[
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7446\n\n```\nCWE-000 static void unix_release_sock ( struct sock * sk , int embrion ) { struct unix_sock * u = unix_sk ( sk ) ; struct path path ; struct sock * skpair ; struct sk_buff * skb ; int state ; unix_remove_socket ( sk ) ; unix_state_lock ( sk ) ; sock_orphan ( sk ) ; sk -> sk_shutdown = SHUTDOWN_MASK ; path = u -> path ; u -> path . dentry = NULL ; u -> path . mnt = NULL ; state = sk -> sk_state ; sk -> sk_state = TCP_CLOSE ; unix_state_unlock ( sk ) ; wake_up_interruptible_all ( & u -> peer_wait ) ; skpair = unix_peer ( sk ) ; if ( skpair != NULL ) { if ( sk -> sk_type == SOCK_STREAM || sk -> sk_type == SOCK_SEQPACKET ) { unix_state_lock ( skpair ) ; skpair -> sk_shutdown = SHUTDOWN_MASK ; if ( ! skb_queue_empty ( & sk -> sk_receive_queue ) || embrion ) skpair -> sk_err = ECONNRESET ; unix_state_unlock ( skpair ) ; skpair -> sk_state_change ( skpair ) ; sk_wake_async ( skpair , SOCK_WAKE_WAITD , POLL_HUP ) ; } <S2SV_StartBug> sock_put ( skpair ) ; <S2SV_EndBug> unix_peer ( sk ) = NULL ; } while ( ( skb = skb_dequeue ( & sk -> sk_receive_queue ) ) != NULL ) { if ( state == TCP_LISTEN ) unix_release_sock ( skb -> sk , 1 ) ; UNIXCB ( skb ) . consumed = skb -> len ; kfree_skb ( skb ) ; } if ( path . dentry ) path_put ( & path ) ; sock_put ( sk ) ; if ( unix_tot_inflight ) unix_gc ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } unix_dgram_peer_wake_disconnect ( sk , skpair ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4578\n\n```\nCWE-200 static void snd_timer_user_tinterrupt ( struct snd_timer_instance * timeri , unsigned long resolution , unsigned long ticks ) { struct snd_timer_user * tu = timeri -> callback_data ; struct snd_timer_tread * r , r1 ; struct timespec tstamp ; int prev , append = 0 ; memset ( & tstamp , 0 , sizeof ( tstamp ) ) ; spin_lock ( & tu -> qlock ) ; if ( ( tu -> filter & ( ( 1 << SNDRV_TIMER_EVENT_RESOLUTION ) | ( 1 << SNDRV_TIMER_EVENT_TICK ) ) ) == 0 ) { spin_unlock ( & tu -> qlock ) ; return ; } if ( tu -> last_resolution != resolution || ticks > 0 ) { if ( timer_tstamp_monotonic ) ktime_get_ts ( & tstamp ) ; else getnstimeofday ( & tstamp ) ; } if ( ( tu -> filter & ( 1 << SNDRV_TIMER_EVENT_RESOLUTION ) ) && tu -> last_resolution != resolution ) { <S2SV_StartBug> r1 . event = SNDRV_TIMER_EVENT_RESOLUTION ; <S2SV_EndBug> r1 . tstamp = tstamp ; r1 . val = resolution ; snd_timer_user_append_to_tqueue ( tu , & r1 ) ; tu -> last_resolution = resolution ; append ++ ; } if ( ( tu -> filter & ( 1 << SNDRV_TIMER_EVENT_TICK ) ) == 0 ) goto __wake ; if ( ticks == 0 ) goto __wake ; if ( tu -> qused > 0 ) { prev = tu -> qtail == 0 ? tu -> queue_size - 1 : tu -> qtail - 1 ; r = & tu -> tqueue [ prev ] ; if ( r -> event == SNDRV_TIMER_EVENT_TICK ) { r -> tstamp = tstamp ; r -> val += ticks ; append ++ ; goto __wake ; } } r1 . event = SNDRV_TIMER_EVENT_TICK ; r1 . tstamp = tstamp ; r1 . val = ticks ; snd_timer_user_append_to_tqueue ( tu , & r1 ) ; append ++ ; __wake : spin_unlock ( & tu -> qlock ) ; if ( append == 0 ) return ; kill_fasync ( & tu -> fasync , SIGIO , POLL_IN ) ; wake_up ( & tu -> qchange_sleep ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> resolution ) { memset ( & r1 , 0 , sizeof ( r1 ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void store_coding_context ( MACROBLOCK * x , PICK_MODE_CONTEXT * ctx , int mode_index , <S2SV_StartBug> int_mv * ref_mv , <S2SV_EndBug> int_mv * second_ref_mv , int64_t comp_pred_diff [ REFERENCE_MODES ] , <S2SV_StartBug> int64_t tx_size_diff [ TX_MODES ] , <S2SV_EndBug> <S2SV_StartBug> int64_t best_filter_diff [ SWITCHABLE_FILTER_CONTEXTS ] ) { <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; ctx -> skip = x -> skip ; <S2SV_StartBug> ctx -> best_mode_index = mode_index ; <S2SV_EndBug> ctx -> mic = * xd -> mi [ 0 ] ; <S2SV_StartBug> ctx -> best_ref_mv [ 0 ] . as_int = ref_mv -> as_int ; <S2SV_EndBug> ctx -> best_ref_mv [ 1 ] . as_int = second_ref_mv -> as_int ; ctx -> single_pred_diff = ( int ) comp_pred_diff [ SINGLE_REFERENCE ] ; ctx -> comp_pred_diff = ( int ) comp_pred_diff [ COMPOUND_REFERENCE ] ; ctx -> hybrid_pred_diff = ( int ) comp_pred_diff [ REFERENCE_MODE_SELECT ] ; <S2SV_StartBug> vpx_memcpy ( ctx -> tx_rd_diff , tx_size_diff , sizeof ( ctx -> tx_rd_diff ) ) ; <S2SV_EndBug> vpx_memcpy ( ctx -> best_filter_diff , best_filter_diff , sizeof ( * best_filter_diff ) * SWITCHABLE_FILTER_CONTEXTS ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mode_index , <S2SV_ModEnd> int64_t comp_pred_diff [ <S2SV_ModStart> ] , int64_t <S2SV_ModEnd> best_filter_diff [ SWITCHABLE_FILTER_CONTEXTS <S2SV_ModStart> [ SWITCHABLE_FILTER_CONTEXTS ] , int skippable <S2SV_ModStart> ; ctx -> skippable = skippable ; ctx -> <S2SV_ModStart> ; ctx -> mbmi_ext = * x -> mbmi_ext <S2SV_ModEnd> ; ctx -> <S2SV_ModStart> REFERENCE_MODE_SELECT ] ; memcpy <S2SV_ModEnd> ( ctx ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static int ext4_write_begin ( struct file * file , struct address_space * mapping , loff_t pos , unsigned len , unsigned flags , struct page * * pagep , void * * fsdata ) { struct inode * inode = mapping -> host ; int ret , needed_blocks ; handle_t * handle ; int retries = 0 ; struct page * page ; pgoff_t index ; unsigned from , to ; trace_ext4_write_begin ( inode , pos , len , flags ) ; needed_blocks = ext4_writepage_trans_blocks ( inode ) + 1 ; index = pos >> PAGE_CACHE_SHIFT ; from = pos & ( PAGE_CACHE_SIZE - 1 ) ; to = from + len ; retry : handle = ext4_journal_start ( inode , needed_blocks ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; goto out ; } flags |= AOP_FLAG_NOFS ; page = grab_cache_page_write_begin ( mapping , index , flags ) ; if ( ! page ) { ext4_journal_stop ( handle ) ; ret = - ENOMEM ; goto out ; } * pagep = page ; <S2SV_StartBug> ret = block_write_begin ( file , mapping , pos , len , flags , pagep , fsdata , <S2SV_EndBug> <S2SV_StartBug> ext4_get_block ) ; <S2SV_EndBug> if ( ! ret && ext4_should_journal_data ( inode ) ) { ret = walk_page_buffers ( handle , page_buffers ( page ) , from , to , NULL , do_journal_get_write_access ) ; } if ( ret ) { unlock_page ( page ) ; page_cache_release ( page ) ; if ( pos + len > inode -> i_size && ext4_can_truncate ( inode ) ) ext4_orphan_add ( handle , inode ) ; ext4_journal_stop ( handle ) ; if ( pos + len > inode -> i_size ) { ext4_truncate_failed_write ( inode ) ; if ( inode -> i_nlink ) ext4_orphan_del ( NULL , inode ) ; } } if ( ret == - ENOSPC && ext4_should_retry_alloc ( inode -> i_sb , & retries ) ) goto retry ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = page ; if ( ext4_should_dioread_nolock ( inode ) ) <S2SV_ModStart> , fsdata , ext4_get_block_write ) ; else ret = block_write_begin ( file , mapping , pos , len , flags , pagep , fsdata ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int16_t vp9_ac_quant ( int qindex , int delta ) { <S2SV_EndBug> return ac_qlookup [ clamp ( qindex + delta , 0 , MAXQ ) ] ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int delta , vpx_bit_depth_t bit_depth ) { # if CONFIG_VP9_HIGHBITDEPTH switch ( bit_depth ) { case VPX_BITS_8 : <S2SV_ModEnd> return ac_qlookup [ <S2SV_ModStart> ) ] ; case VPX_BITS_10 : return ac_qlookup_10 [ clamp ( qindex + delta , 0 , MAXQ ) ] ; case VPX_BITS_12 : return ac_qlookup_12 [ clamp ( qindex + delta , 0 , MAXQ ) ] ; default : assert ( 0 && \"bit_depth<S2SV_blank>should<S2SV_blank>be<S2SV_blank>VPX_BITS_8,<S2SV_blank>VPX_BITS_10<S2SV_blank>or<S2SV_blank>VPX_BITS_12\" ) ; return - 1 ; } # else ( void ) bit_depth ; return ac_qlookup [ clamp ( qindex + delta , 0 , MAXQ ) ] ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15861\n\n```\nCWE-59 int <S2SV_StartBug> add_mibfile ( const char * tmpstr , const char * d_name , FILE * ip ) <S2SV_EndBug> { FILE * fp ; char token [ MAXTOKEN ] , token2 [ MAXTOKEN ] ; if ( ( fp = fopen ( tmpstr , \"r\" ) ) == NULL ) { snmp_log_perror ( tmpstr ) ; return 1 ; } DEBUGMSGTL ( ( \"parse-mibs\" , \"Checking<S2SV_blank>file:<S2SV_blank>%s...\\\\n\" , tmpstr ) ) ; mibLine = 1 ; File = tmpstr ; if ( get_token ( fp , token , MAXTOKEN ) != LABEL ) { fclose ( fp ) ; return 1 ; } if ( get_token ( fp , token2 , MAXTOKEN ) == DEFINITIONS ) { new_module ( token , tmpstr ) ; <S2SV_StartBug> if ( ip ) <S2SV_EndBug> fprintf ( ip , \"%s<S2SV_blank>%s\\\\n\" , token , d_name ) ; fclose ( fp ) ; return 0 ; } else { fclose ( fp ) ; return 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * d_name <S2SV_ModEnd> ) { FILE <S2SV_ModStart> tmpstr ) ; <S2SV_ModEnd> fclose ( fp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9253\n\n```\nCWE-400 int fpm_stdio_init_child ( struct fpm_worker_pool_s * wp ) { # ifdef HAVE_SYSLOG_H if ( fpm_globals . error_log_fd == ZLOG_SYSLOG ) { closelog ( ) ; } else # endif if ( fpm_globals . error_log_fd > 0 ) { close ( fpm_globals . error_log_fd ) ; } fpm_globals . error_log_fd = - 1 ; zlog_set_fd ( - 1 ) ; <S2SV_StartBug> if ( wp -> listening_socket != STDIN_FILENO ) { <S2SV_EndBug> if ( 0 > dup2 ( wp -> listening_socket , STDIN_FILENO ) ) { zlog ( ZLOG_SYSERROR , \"failed<S2SV_blank>to<S2SV_blank>init<S2SV_blank>child<S2SV_blank>stdio:<S2SV_blank>dup2()\" ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6271\n\n```\nCWE-254 void test_parser ( void ) { <S2SV_StartBug> int i , retval ; <S2SV_EndBug> bzrtpPacket_t * zrtpPacket ; bzrtpContext_t * context87654321 = bzrtp_createBzrtpContext ( 0x87654321 ) ; bzrtpContext_t * context12345678 = bzrtp_createBzrtpContext ( 0x12345678 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> selfH [ 0 ] , H12345678 [ 0 ] , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> selfH [ 1 ] , H12345678 [ 1 ] , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> selfH [ 2 ] , H12345678 [ 2 ] , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> selfH [ 3 ] , H12345678 [ 3 ] , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> selfH [ 0 ] , H87654321 [ 0 ] , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> selfH [ 1 ] , H87654321 [ 1 ] , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> selfH [ 2 ] , H87654321 [ 2 ] , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> selfH [ 3 ] , H87654321 [ 3 ] , 32 ) ; context87654321 -> channelContext [ 0 ] -> keyAgreementAlgo = ZRTP_KEYAGREEMENT_DH3k ; context12345678 -> channelContext [ 0 ] -> keyAgreementAlgo = ZRTP_KEYAGREEMENT_DH3k ; context87654321 -> channelContext [ 0 ] -> cipherAlgo = ZRTP_CIPHER_AES1 ; context12345678 -> channelContext [ 0 ] -> cipherAlgo = ZRTP_CIPHER_AES1 ; context87654321 -> channelContext [ 0 ] -> hashAlgo = ZRTP_HASH_S256 ; context12345678 -> channelContext [ 0 ] -> hashAlgo = ZRTP_HASH_S256 ; updateCryptoFunctionPointers ( context87654321 -> channelContext [ 0 ] ) ; updateCryptoFunctionPointers ( context12345678 -> channelContext [ 0 ] ) ; context87654321 -> channelContext [ 0 ] -> mackeyi = ( uint8_t * ) malloc ( 32 ) ; context12345678 -> channelContext [ 0 ] -> mackeyi = ( uint8_t * ) malloc ( 32 ) ; context87654321 -> channelContext [ 0 ] -> mackeyr = ( uint8_t * ) malloc ( 32 ) ; context12345678 -> channelContext [ 0 ] -> mackeyr = ( uint8_t * ) malloc ( 32 ) ; context87654321 -> channelContext [ 0 ] -> zrtpkeyi = ( uint8_t * ) malloc ( 16 ) ; context12345678 -> channelContext [ 0 ] -> zrtpkeyi = ( uint8_t * ) malloc ( 16 ) ; context87654321 -> channelContext [ 0 ] -> zrtpkeyr = ( uint8_t * ) malloc ( 16 ) ; context12345678 -> channelContext [ 0 ] -> zrtpkeyr = ( uint8_t * ) malloc ( 16 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> mackeyi , mackeyi , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> mackeyr , mackeyr , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> zrtpkeyi , zrtpkeyi , 16 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> zrtpkeyr , zrtpkeyr , 16 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> mackeyi , mackeyi , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> mackeyr , mackeyr , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> zrtpkeyi , zrtpkeyi , 16 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> zrtpkeyr , zrtpkeyr , 16 ) ; context12345678 -> channelContext [ 0 ] -> role = RESPONDER ; for ( i = 0 ; i < TEST_PACKET_NUMBER ; i ++ ) { uint8_t freePacketFlag = 1 ; zrtpPacket = bzrtp_packetCheck ( patternZRTPPackets [ i ] , patternZRTPMetaData [ i ] [ 0 ] , ( patternZRTPMetaData [ i ] [ 1 ] ) - 1 , & retval ) ; retval += bzrtp_packetParser ( ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) ? context12345678 : context87654321 , ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) ? context12345678 -> channelContext [ 0 ] : context87654321 -> channelContext [ 0 ] , patternZRTPPackets [ i ] , patternZRTPMetaData [ i ] [ 0 ] , zrtpPacket ) ; if ( zrtpPacket -> messageType == MSGTYPE_HELLO ) { if ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) { context12345678 -> channelContext [ 0 ] -> peerPackets [ HELLO_MESSAGE_STORE_ID ] = zrtpPacket ; } else { context87654321 -> channelContext [ 0 ] -> peerPackets [ HELLO_MESSAGE_STORE_ID ] = zrtpPacket ; } freePacketFlag = 0 ; } if ( zrtpPacket -> messageType == MSGTYPE_COMMIT ) { if ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) { context12345678 -> channelContext [ 0 ] -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] = zrtpPacket ; } else { context87654321 -> channelContext [ 0 ] -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] = zrtpPacket ; } freePacketFlag = 0 ; } if ( zrtpPacket -> messageType == MSGTYPE_DHPART1 || zrtpPacket -> messageType == MSGTYPE_DHPART2 ) { if ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) { context12345678 -> channelContext [ 0 ] -> peerPackets [ DHPART_MESSAGE_STORE_ID ] = zrtpPacket ; } else { context87654321 -> channelContext [ 0 ] -> peerPackets [ DHPART_MESSAGE_STORE_ID ] = zrtpPacket ; } freePacketFlag = 0 ; } free ( zrtpPacket -> packetString ) ; retval = bzrtp_packetBuild ( ( patternZRTPMetaData [ i ] [ 2 ] == 0x12345678 ) ? context12345678 : context87654321 , ( patternZRTPMetaData [ i ] [ 2 ] == 0x12345678 ) ? context12345678 -> channelContext [ 0 ] : context87654321 -> channelContext [ 0 ] , zrtpPacket , patternZRTPMetaData [ i ] [ 1 ] ) ; if ( zrtpPacket -> packetString != NULL ) { CU_ASSERT_TRUE ( memcmp ( zrtpPacket -> packetString , patternZRTPPackets [ i ] , patternZRTPMetaData [ i ] [ 0 ] ) == 0 ) ; <S2SV_StartBug> } else { <S2SV_EndBug> CU_FAIL ( \"Unable<S2SV_blank>to<S2SV_blank>build<S2SV_blank>packet\" ) ; } if ( freePacketFlag == 1 ) { bzrtp_freeZrtpPacket ( zrtpPacket ) ; } } bzrtp_destroyBzrtpContext ( context87654321 , 0x87654321 ) ; bzrtp_destroyBzrtpContext ( context12345678 , 0x12345678 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { test_parser_param ( <S2SV_ModEnd> 0 ) ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-1152\n\n```\nCWE-20 static enum try_read_result try_read_network ( conn * c ) { enum try_read_result gotdata = READ_NO_DATA_RECEIVED ; int res ; <S2SV_StartBug> assert ( c != NULL ) ; <S2SV_EndBug> if ( c -> rcurr != c -> rbuf ) { if ( c -> rbytes != 0 ) memmove ( c -> rbuf , c -> rcurr , c -> rbytes ) ; c -> rcurr = c -> rbuf ; } while ( 1 ) { <S2SV_StartBug> if ( c -> rbytes >= c -> rsize ) { <S2SV_EndBug> char * new_rbuf = realloc ( c -> rbuf , c -> rsize * 2 ) ; if ( ! new_rbuf ) { if ( settings . verbose > 0 ) fprintf ( stderr , \"Couldn\\'t<S2SV_blank>realloc<S2SV_blank>input<S2SV_blank>buffer\\\\n\" ) ; c -> rbytes = 0 ; out_string ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>reading<S2SV_blank>request\" ) ; c -> write_and_go = conn_closing ; return READ_MEMORY_ERROR ; } c -> rcurr = c -> rbuf = new_rbuf ; c -> rsize *= 2 ; } int avail = c -> rsize - c -> rbytes ; res = read ( c -> sfd , c -> rbuf + c -> rbytes , avail ) ; if ( res > 0 ) { pthread_mutex_lock ( & c -> thread -> stats . mutex ) ; c -> thread -> stats . bytes_read += res ; pthread_mutex_unlock ( & c -> thread -> stats . mutex ) ; gotdata = READ_DATA_RECEIVED ; c -> rbytes += res ; if ( res == avail ) { continue ; } else { break ; } } if ( res == 0 ) { return READ_ERROR ; } if ( res == - 1 ) { if ( errno == EAGAIN || errno == EWOULDBLOCK ) { break ; } return READ_ERROR ; } } return gotdata ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int res ; int num_allocs = 0 ; <S2SV_ModStart> rsize ) { if ( num_allocs == 4 ) { return gotdata ; } ++ num_allocs ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14341\n\n```\nCWE-400 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; one = 1 ; image = AcquireImage ( image_info ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; Rec2 . RecordLength = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; <S2SV_StartBug> Rd_WP_DWORD ( image , & Rec . RecordLength ) ; <S2SV_EndBug> if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> x_resolution = BitmapHeader1 . HorzRes / 470.0 ; image -> y_resolution = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > ( Rec2 . RecordLength - 2 - 2 ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> x_resolution = BitmapHeader2 . HorzRes / 470.0 ; image -> y_resolution = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; UnpackRaster : status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelPacket * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ReplaceImageInList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > ( Rec2 . RecordLength - 2 - 2 ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; image -> rows = Bitmap2Header1 . Height ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { size_t one ; one = 1 ; image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelPacket * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk + 1 , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( BImgBuff , i , image , bpp ) ; } if ( BImgBuff ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Rec . RecordLength ) ; if ( Rec . RecordLength > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13690\n\n```\nCWE-125 static const u_char * ikev2_auth_print ( netdissect_options * ndo , u_char tpay , const struct isakmp_gen * ext , u_int item_len _U_ , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { struct ikev2_auth a ; const char * v2_auth [ ] = { \"invalid\" , \"rsasig\" , \"shared-secret\" , \"dsssig\" } ; const u_char * authdata = ( const u_char * ) ext + sizeof ( a ) ; unsigned int len ; <S2SV_StartBug> ND_TCHECK ( * ext ) ; <S2SV_EndBug> UNALIGNED_MEMCPY ( & a , ext , sizeof ( a ) ) ; ikev2_pay_print ( ndo , NPSTR ( tpay ) , a . h . critical ) ; len = ntohs ( a . h . len ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%u<S2SV_blank>method=%s\" , len - 4 , STR_OR_ID ( a . auth_method , v2_auth ) ) ) ; if ( len > 4 ) { if ( ndo -> ndo_vflag > 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>authdata=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) authdata , len - sizeof ( a ) ) ) goto trunc ; ND_PRINT ( ( ndo , \")<S2SV_blank>\" ) ) ; } else if ( ndo -> ndo_vflag ) { if ( ! ike_show_somedata ( ndo , authdata , ep ) ) goto trunc ; } } return ( const u_char * ) ext + len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( tpay ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int len ; ND_TCHECK2 ( * ext , sizeof ( a ) <S2SV_ModEnd> ) ; UNALIGNED_MEMCPY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9806\n\n```\nCWE-415 static int netlink_dump ( struct sock * sk ) { struct netlink_sock * nlk = nlk_sk ( sk ) ; struct netlink_callback * cb ; struct sk_buff * skb = NULL ; struct nlmsghdr * nlh ; <S2SV_StartBug> int len , err = - ENOBUFS ; <S2SV_EndBug> int alloc_min_size ; int alloc_size ; mutex_lock ( nlk -> cb_mutex ) ; if ( ! nlk -> cb_running ) { err = - EINVAL ; goto errout_skb ; } if ( atomic_read ( & sk -> sk_rmem_alloc ) >= sk -> sk_rcvbuf ) goto errout_skb ; cb = & nlk -> cb ; alloc_min_size = max_t ( int , cb -> min_dump_alloc , NLMSG_GOODSIZE ) ; if ( alloc_min_size < nlk -> max_recvmsg_len ) { alloc_size = nlk -> max_recvmsg_len ; skb = alloc_skb ( alloc_size , GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY ) ; } if ( ! skb ) { alloc_size = alloc_min_size ; skb = alloc_skb ( alloc_size , GFP_KERNEL ) ; } if ( ! skb ) goto errout_skb ; skb_reserve ( skb , skb_tailroom ( skb ) - alloc_size ) ; netlink_skb_set_owner_r ( skb , sk ) ; len = cb -> dump ( skb , cb ) ; if ( len > 0 ) { mutex_unlock ( nlk -> cb_mutex ) ; if ( sk_filter ( sk , skb ) ) kfree_skb ( skb ) ; else __netlink_sendskb ( sk , skb ) ; return 0 ; } nlh = nlmsg_put_answer ( skb , cb , NLMSG_DONE , sizeof ( len ) , NLM_F_MULTI ) ; if ( ! nlh ) goto errout_skb ; nl_dump_check_consistent ( cb , nlh ) ; memcpy ( nlmsg_data ( nlh ) , & len , sizeof ( len ) ) ; if ( sk_filter ( sk , skb ) ) kfree_skb ( skb ) ; else __netlink_sendskb ( sk , skb ) ; if ( cb -> done ) cb -> done ( cb ) ; nlk -> cb_running = false ; <S2SV_StartBug> mutex_unlock ( nlk -> cb_mutex ) ; <S2SV_EndBug> <S2SV_StartBug> module_put ( cb -> module ) ; <S2SV_EndBug> <S2SV_StartBug> consume_skb ( cb -> skb ) ; <S2SV_EndBug> return 0 ; errout_skb : mutex_unlock ( nlk -> cb_mutex ) ; kfree_skb ( skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * nlh ; struct module * module ; <S2SV_ModStart> = false ; module = cb -> module ; skb = cb -> skb ; <S2SV_ModStart> ; module_put ( <S2SV_ModEnd> module ) ; <S2SV_ModStart> ; consume_skb ( <S2SV_ModEnd> skb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 qboolean S_AL_Init ( soundInterface_t * si ) { # ifdef USE_OPENAL const char * device = NULL ; const char * inputdevice = NULL ; int i ; if ( ! si ) { return qfalse ; } for ( i = 0 ; i < MAX_RAW_STREAMS ; i ++ ) { streamSourceHandles [ i ] = - 1 ; streamPlaying [ i ] = qfalse ; streamSources [ i ] = 0 ; streamNumBuffers [ i ] = 0 ; streamBufIndex [ i ] = 0 ; } s_alPrecache = Cvar_Get ( \"s_alPrecache\" , \"1\" , CVAR_ARCHIVE ) ; s_alGain = Cvar_Get ( \"s_alGain\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alSources = Cvar_Get ( \"s_alSources\" , \"96\" , CVAR_ARCHIVE ) ; s_alDopplerFactor = Cvar_Get ( \"s_alDopplerFactor\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alDopplerSpeed = Cvar_Get ( \"s_alDopplerSpeed\" , \"9000\" , CVAR_ARCHIVE ) ; s_alMinDistance = Cvar_Get ( \"s_alMinDistance\" , \"120\" , CVAR_CHEAT ) ; s_alMaxDistance = Cvar_Get ( \"s_alMaxDistance\" , \"1024\" , CVAR_CHEAT ) ; s_alRolloff = Cvar_Get ( \"s_alRolloff\" , \"2\" , CVAR_CHEAT ) ; s_alGraceDistance = Cvar_Get ( \"s_alGraceDistance\" , \"512\" , CVAR_CHEAT ) ; <S2SV_StartBug> s_alDriver = Cvar_Get ( \"s_alDriver\" , ALDRIVER_DEFAULT , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> s_alInputDevice = Cvar_Get ( \"s_alInputDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_StartBug> s_alDevice = Cvar_Get ( \"s_alDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> if ( ! QAL_Init ( s_alDriver -> string ) ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>library:<S2SV_blank>\\\\\"%s\\\\\".\\\\n\" , s_alDriver -> string ) ; if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) || ! QAL_Init ( ALDRIVER_DEFAULT ) ) { return qfalse ; } } device = s_alDevice -> string ; if ( device && ! * device ) device = NULL ; inputdevice = s_alInputDevice -> string ; if ( inputdevice && ! * inputdevice ) inputdevice = NULL ; enumeration_all_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATE_ALL_EXT\" ) ; enumeration_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATION_EXT\" ) ; if ( enumeration_ext || enumeration_all_ext ) { char devicenames [ 16384 ] = \"\" ; const char * devicelist ; # ifdef _WIN32 const char * defaultdevice ; # endif int curlen ; if ( enumeration_all_ext ) { devicelist = qalcGetString ( NULL , ALC_ALL_DEVICES_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_ALL_DEVICES_SPECIFIER ) ; # endif } else { devicelist = qalcGetString ( NULL , ALC_DEVICE_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_DEVICE_SPECIFIER ) ; # endif enumeration_ext = qtrue ; } # ifdef _WIN32 if ( ! device && defaultdevice && ! strcmp ( defaultdevice , \"Generic<S2SV_blank>Hardware\" ) ) device = \"Generic<S2SV_blank>Software\" ; # endif if ( devicelist ) { while ( ( curlen = strlen ( devicelist ) ) ) { Q_strcat ( devicenames , sizeof ( devicenames ) , devicelist ) ; Q_strcat ( devicenames , sizeof ( devicenames ) , \"\\\\n\" ) ; devicelist += curlen + 1 ; } } s_alAvailableDevices = Cvar_Get ( \"s_alAvailableDevices\" , devicenames , CVAR_ROM | CVAR_NORESTART ) ; } alDevice = qalcOpenDevice ( device ) ; if ( ! alDevice && device ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , device ) ; alDevice = qalcOpenDevice ( NULL ) ; } if ( ! alDevice ) { QAL_Shutdown ( ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device.\\\\n\" ) ; return qfalse ; } alContext = qalcCreateContext ( alDevice , NULL ) ; if ( ! alContext ) { QAL_Shutdown ( ) ; qalcCloseDevice ( alDevice ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>OpenAL<S2SV_blank>context.\\\\n\" ) ; return qfalse ; } qalcMakeContextCurrent ( alContext ) ; S_AL_BufferInit ( ) ; S_AL_SrcInit ( ) ; qalDistanceModel ( AL_INVERSE_DISTANCE_CLAMPED ) ; qalDopplerFactor ( s_alDopplerFactor -> value ) ; qalSpeedOfSound ( s_alDopplerSpeed -> value ) ; # ifdef USE_VOIP s_alCapture = Cvar_Get ( \"s_alCapture\" , \"1\" , CVAR_ARCHIVE | CVAR_LATCH ) ; if ( ! s_alCapture -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>by<S2SV_blank>user<S2SV_blank>(\\'+set<S2SV_blank>s_alCapture<S2SV_blank>1\\'<S2SV_blank>to<S2SV_blank>enable)\\\\n\" ) ; } # if USE_MUMBLE else if ( cl_useMumble -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>for<S2SV_blank>Mumble<S2SV_blank>support\\\\n\" ) ; } # endif else { # ifdef __APPLE__ if ( qalcCaptureOpenDevice == NULL ) # else if ( ! qalcIsExtensionPresent ( NULL , \"ALC_EXT_capture\" ) ) # endif { Com_Printf ( \"No<S2SV_blank>ALC_EXT_capture<S2SV_blank>support,<S2SV_blank>can\\'t<S2SV_blank>record<S2SV_blank>audio.\\\\n\" ) ; } else { char inputdevicenames [ 16384 ] = \"\" ; const char * inputdevicelist ; const char * defaultinputdevice ; int curlen ; capture_ext = qtrue ; inputdevicelist = qalcGetString ( NULL , ALC_CAPTURE_DEVICE_SPECIFIER ) ; defaultinputdevice = qalcGetString ( NULL , ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER ) ; if ( inputdevicelist ) { while ( ( curlen = strlen ( inputdevicelist ) ) ) { Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , inputdevicelist ) ; Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , \"\\\\n\" ) ; inputdevicelist += curlen + 1 ; } } s_alAvailableInputDevices = Cvar_Get ( \"s_alAvailableInputDevices\" , inputdevicenames , CVAR_ROM | CVAR_NORESTART ) ; Com_Printf ( \"OpenAL<S2SV_blank>default<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>is<S2SV_blank>\\'%s\\'\\\\n\" , defaultinputdevice ? defaultinputdevice : \"none\" ) ; alCaptureDevice = qalcCaptureOpenDevice ( inputdevice , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; if ( ! alCaptureDevice && inputdevice ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>Input<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , inputdevice ) ; alCaptureDevice = qalcCaptureOpenDevice ( NULL , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; } Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>%s.\\\\n\" , ( alCaptureDevice == NULL ) ? \"failed<S2SV_blank>to<S2SV_blank>open\" : \"opened\" ) ; } } # endif si -> Shutdown = S_AL_Shutdown ; si -> StartSound = S_AL_StartSound ; si -> StartLocalSound = S_AL_StartLocalSound ; si -> StartBackgroundTrack = S_AL_StartBackgroundTrack ; si -> StopBackgroundTrack = S_AL_StopBackgroundTrack ; si -> RawSamples = S_AL_RawSamples ; si -> StopAllSounds = S_AL_StopAllSounds ; si -> ClearLoopingSounds = S_AL_ClearLoopingSounds ; si -> AddLoopingSound = S_AL_AddLoopingSound ; si -> AddRealLoopingSound = S_AL_AddRealLoopingSound ; si -> StopLoopingSound = S_AL_StopLoopingSound ; si -> Respatialize = S_AL_Respatialize ; si -> UpdateEntityPosition = S_AL_UpdateEntityPosition ; si -> Update = S_AL_Update ; si -> DisableSounds = S_AL_DisableSounds ; si -> BeginRegistration = S_AL_BeginRegistration ; si -> RegisterSound = S_AL_RegisterSound ; si -> ClearSoundBuffer = S_AL_ClearSoundBuffer ; si -> SoundInfo = S_AL_SoundInfo ; si -> SoundList = S_AL_SoundList ; # ifdef USE_VOIP si -> StartCapture = S_AL_StartCapture ; si -> AvailableCaptureSamples = S_AL_AvailableCaptureSamples ; si -> Capture = S_AL_Capture ; si -> StopCapture = S_AL_StopCapture ; si -> MasterGain = S_AL_MasterGain ; # endif return qtrue ; # else return qfalse ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CVAR_ARCHIVE | CVAR_LATCH | CVAR_PROTECTED <S2SV_ModStart> CVAR_LATCH ) ; if ( COM_CompareExtension ( s_alDriver -> string , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , s_alDriver -> string ) ; return qfalse ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9436\n\n```\nCWE-20 int HTMLtagproc1 ( struct parsed_tag * tag , struct html_feed_environ * h_env ) { char * p , * q , * r ; int i , w , x , y , z , count , width ; struct readbuffer * obuf = h_env -> obuf ; struct environment * envs = h_env -> envs ; Str tmp ; int hseq ; int cmd ; # ifdef ID_EXT char * id = NULL ; # endif cmd = tag -> tagid ; if ( obuf -> flag & RB_PRE ) { switch ( cmd ) { case HTML_NOBR : case HTML_N_NOBR : case HTML_PRE_INT : case HTML_N_PRE_INT : return 1 ; } } switch ( cmd ) { case HTML_B : obuf -> in_bold ++ ; if ( obuf -> in_bold > 1 ) return 1 ; return 0 ; case HTML_N_B : if ( obuf -> in_bold == 1 && close_effect0 ( obuf , HTML_B ) ) obuf -> in_bold = 0 ; if ( obuf -> in_bold > 0 ) { obuf -> in_bold -- ; if ( obuf -> in_bold == 0 ) return 0 ; } return 1 ; case HTML_I : obuf -> in_italic ++ ; if ( obuf -> in_italic > 1 ) return 1 ; return 0 ; case HTML_N_I : if ( obuf -> in_italic == 1 && close_effect0 ( obuf , HTML_I ) ) obuf -> in_italic = 0 ; if ( obuf -> in_italic > 0 ) { obuf -> in_italic -- ; if ( obuf -> in_italic == 0 ) return 0 ; } return 1 ; case HTML_U : obuf -> in_under ++ ; if ( obuf -> in_under > 1 ) return 1 ; return 0 ; case HTML_N_U : if ( obuf -> in_under == 1 && close_effect0 ( obuf , HTML_U ) ) obuf -> in_under = 0 ; if ( obuf -> in_under > 0 ) { obuf -> in_under -- ; if ( obuf -> in_under == 0 ) return 0 ; } return 1 ; case HTML_EM : HTMLlineproc1 ( \"<i>\" , h_env ) ; return 1 ; case HTML_N_EM : HTMLlineproc1 ( \"</i>\" , h_env ) ; return 1 ; case HTML_STRONG : HTMLlineproc1 ( \"<b>\" , h_env ) ; return 1 ; case HTML_N_STRONG : HTMLlineproc1 ( \"</b>\" , h_env ) ; return 1 ; case HTML_Q : HTMLlineproc1 ( \"`\" , h_env ) ; return 1 ; case HTML_N_Q : HTMLlineproc1 ( \"\\'\" , h_env ) ; return 1 ; case HTML_P : case HTML_N_P : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 1 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } obuf -> flag |= RB_IGNORE_P ; if ( cmd == HTML_P ) { set_alignment ( obuf , tag ) ; obuf -> flag |= RB_P ; } return 1 ; case HTML_BR : flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 1 , h_env -> limit ) ; h_env -> blank_lines = 0 ; return 1 ; case HTML_H : if ( ! ( obuf -> flag & ( RB_PREMODE | RB_IGNORE_P ) ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } HTMLlineproc1 ( \"<b>\" , h_env ) ; set_alignment ( obuf , tag ) ; return 1 ; case HTML_N_H : HTMLlineproc1 ( \"</b>\" , h_env ) ; if ( ! ( obuf -> flag & RB_PREMODE ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_RESTORE_FLAG ( obuf ) ; close_anchor ( h_env , obuf ) ; obuf -> flag |= RB_IGNORE_P ; return 1 ; case HTML_UL : case HTML_OL : case HTML_BLQ : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! ( obuf -> flag & RB_PREMODE ) && ( h_env -> envc == 0 || cmd == HTML_BLQ ) ) do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } PUSH_ENV ( cmd ) ; if ( cmd == HTML_UL || cmd == HTML_OL ) { if ( parsedtag_get_value ( tag , ATTR_START , & count ) ) { envs [ h_env -> envc ] . count = count - 1 ; } } if ( cmd == HTML_OL ) { envs [ h_env -> envc ] . type = '1' ; if ( parsedtag_get_value ( tag , ATTR_TYPE , & p ) ) { envs [ h_env -> envc ] . type = ( int ) * p ; } } if ( cmd == HTML_UL ) envs [ h_env -> envc ] . type = ul_type ( tag , 0 ) ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; return 1 ; case HTML_N_UL : case HTML_N_OL : case HTML_N_DL : case HTML_N_BLQ : CLOSE_DT ; CLOSE_A ; if ( h_env -> envc > 0 ) { flushline ( h_env , obuf , envs [ h_env -> envc - 1 ] . indent , 0 , h_env -> limit ) ; POP_ENV ; if ( ! ( obuf -> flag & RB_PREMODE ) && ( h_env -> envc == 0 || cmd == HTML_N_DL || cmd == HTML_N_BLQ ) ) { do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , INDENT_INCR , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; } } close_anchor ( h_env , obuf ) ; return 1 ; case HTML_DL : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! ( obuf -> flag & RB_PREMODE ) ) do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } PUSH_ENV ( cmd ) ; if ( parsedtag_exists ( tag , ATTR_COMPACT ) ) envs [ h_env -> envc ] . env = HTML_DL_COMPACT ; obuf -> flag |= RB_IGNORE_P ; return 1 ; case HTML_LI : CLOSE_A ; CLOSE_DT ; if ( h_env -> envc > 0 ) { Str num ; flushline ( h_env , obuf , envs [ h_env -> envc - 1 ] . indent , 0 , h_env -> limit ) ; envs [ h_env -> envc ] . count ++ ; if ( parsedtag_get_value ( tag , ATTR_VALUE , & p ) ) { count = atoi ( p ) ; if ( count > 0 ) envs [ h_env -> envc ] . count = count ; else envs [ h_env -> envc ] . count = 0 ; } switch ( envs [ h_env -> envc ] . env ) { case HTML_UL : envs [ h_env -> envc ] . type = ul_type ( tag , envs [ h_env -> envc ] . type ) ; for ( i = 0 ; i < INDENT_INCR - 3 ; i ++ ) push_charp ( obuf , 1 , NBSP , PC_ASCII ) ; tmp = Strnew ( ) ; switch ( envs [ h_env -> envc ] . type ) { case 'd' : push_symbol ( tmp , UL_SYMBOL_DISC , symbol_width , 1 ) ; break ; case 'c' : push_symbol ( tmp , UL_SYMBOL_CIRCLE , symbol_width , 1 ) ; break ; case 's' : push_symbol ( tmp , UL_SYMBOL_SQUARE , symbol_width , 1 ) ; break ; default : push_symbol ( tmp , UL_SYMBOL ( ( h_env -> envc_real - 1 ) % MAX_UL_LEVEL ) , symbol_width , 1 ) ; break ; } if ( symbol_width == 1 ) push_charp ( obuf , 1 , NBSP , PC_ASCII ) ; push_str ( obuf , symbol_width , tmp , PC_ASCII ) ; push_charp ( obuf , 1 , NBSP , PC_ASCII ) ; set_space_to_prevchar ( obuf -> prevchar ) ; break ; case HTML_OL : if ( parsedtag_get_value ( tag , ATTR_TYPE , & p ) ) envs [ h_env -> envc ] . type = ( int ) * p ; switch ( ( envs [ h_env -> envc ] . count > 0 ) ? envs [ h_env -> envc ] . type : '1' ) { case 'i' : num = romanNumeral ( envs [ h_env -> envc ] . count ) ; break ; case 'I' : num = romanNumeral ( envs [ h_env -> envc ] . count ) ; Strupper ( num ) ; break ; case 'a' : num = romanAlphabet ( envs [ h_env -> envc ] . count ) ; break ; case 'A' : num = romanAlphabet ( envs [ h_env -> envc ] . count ) ; Strupper ( num ) ; break ; default : num = Sprintf ( \"%d\" , envs [ h_env -> envc ] . count ) ; break ; } if ( INDENT_INCR >= 4 ) Strcat_charp ( num , \".<S2SV_blank>\" ) ; else Strcat_char ( num , '.' ) ; push_spaces ( obuf , 1 , INDENT_INCR - num -> length ) ; push_str ( obuf , num -> length , num , PC_ASCII ) ; if ( INDENT_INCR >= 4 ) set_space_to_prevchar ( obuf -> prevchar ) ; break ; default : push_spaces ( obuf , 1 , INDENT_INCR ) ; break ; } } else { flushline ( h_env , obuf , 0 , 0 , h_env -> limit ) ; } obuf -> flag |= RB_IGNORE_P ; return 1 ; case HTML_DT : CLOSE_A ; if ( h_env -> envc == 0 || ( h_env -> envc_real < h_env -> nenv && envs [ h_env -> envc ] . env != HTML_DL && envs [ h_env -> envc ] . env != HTML_DL_COMPACT ) ) { PUSH_ENV ( HTML_DL ) ; } if ( h_env -> envc > 0 ) { flushline ( h_env , obuf , envs [ h_env -> envc - 1 ] . indent , 0 , h_env -> limit ) ; } if ( ! ( obuf -> flag & RB_IN_DT ) ) { HTMLlineproc1 ( \"<b>\" , h_env ) ; obuf -> flag |= RB_IN_DT ; } obuf -> flag |= RB_IGNORE_P ; return 1 ; case HTML_DD : CLOSE_A ; CLOSE_DT ; <S2SV_StartBug> if ( envs [ h_env -> envc ] . env == HTML_DL_COMPACT ) { <S2SV_EndBug> if ( obuf -> pos > envs [ h_env -> envc ] . indent ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; else push_spaces ( obuf , 1 , envs [ h_env -> envc ] . indent - obuf -> pos ) ; } else flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; return 1 ; case HTML_TITLE : close_anchor ( h_env , obuf ) ; process_title ( tag ) ; obuf -> flag |= RB_TITLE ; obuf -> end_tag = HTML_N_TITLE ; return 1 ; case HTML_N_TITLE : if ( ! ( obuf -> flag & RB_TITLE ) ) return 1 ; obuf -> flag &= ~ RB_TITLE ; obuf -> end_tag = 0 ; tmp = process_n_title ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_TITLE_ALT : if ( parsedtag_get_value ( tag , ATTR_TITLE , & p ) ) h_env -> title = html_unquote ( p ) ; return 0 ; case HTML_FRAMESET : PUSH_ENV ( cmd ) ; push_charp ( obuf , 9 , \"--FRAME--\" , PC_ASCII ) ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; return 0 ; case HTML_N_FRAMESET : if ( h_env -> envc > 0 ) { POP_ENV ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } return 0 ; case HTML_NOFRAMES : CLOSE_A ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= ( RB_NOFRAMES | RB_IGNORE_P ) ; return 1 ; case HTML_N_NOFRAMES : CLOSE_A ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag &= ~ RB_NOFRAMES ; return 1 ; case HTML_FRAME : q = r = NULL ; parsedtag_get_value ( tag , ATTR_SRC , & q ) ; parsedtag_get_value ( tag , ATTR_NAME , & r ) ; if ( q ) { q = html_quote ( q ) ; push_tag ( obuf , Sprintf ( \"<a<S2SV_blank>hseq=\\\\\"%d\\\\\"<S2SV_blank>href=\\\\\"%s\\\\\">\" , cur_hseq ++ , q ) -> ptr , HTML_A ) ; if ( r ) q = html_quote ( r ) ; push_charp ( obuf , get_strwidth ( q ) , q , PC_ASCII ) ; push_tag ( obuf , \"</a>\" , HTML_N_A ) ; } flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; return 0 ; case HTML_HR : close_anchor ( h_env , obuf ) ; tmp = process_hr ( tag , h_env -> limit , envs [ h_env -> envc ] . indent ) ; HTMLlineproc1 ( tmp -> ptr , h_env ) ; set_space_to_prevchar ( obuf -> prevchar ) ; return 1 ; case HTML_PRE : x = parsedtag_exists ( tag , ATTR_FOR_TABLE ) ; CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! x ) do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } else fillline ( obuf , envs [ h_env -> envc ] . indent ) ; obuf -> flag |= ( RB_PRE | RB_IGNORE_P ) ; return 1 ; case HTML_N_PRE : flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; h_env -> blank_lines ++ ; } obuf -> flag &= ~ RB_PRE ; close_anchor ( h_env , obuf ) ; return 1 ; case HTML_PRE_INT : i = obuf -> line -> length ; append_tags ( obuf ) ; if ( ! ( obuf -> flag & RB_SPECIAL ) ) { set_breakpoint ( obuf , obuf -> line -> length - i ) ; } obuf -> flag |= RB_PRE_INT ; return 0 ; case HTML_N_PRE_INT : push_tag ( obuf , \"</pre_int>\" , HTML_N_PRE_INT ) ; obuf -> flag &= ~ RB_PRE_INT ; if ( ! ( obuf -> flag & RB_SPECIAL ) && obuf -> pos > obuf -> bp . pos ) { set_prevchar ( obuf -> prevchar , \"\" , 0 ) ; obuf -> prev_ctype = PC_CTRL ; } return 1 ; case HTML_NOBR : obuf -> flag |= RB_NOBR ; obuf -> nobr_level ++ ; return 0 ; case HTML_N_NOBR : if ( obuf -> nobr_level > 0 ) obuf -> nobr_level -- ; if ( obuf -> nobr_level == 0 ) obuf -> flag &= ~ RB_NOBR ; return 0 ; case HTML_PRE_PLAIN : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } obuf -> flag |= ( RB_PRE | RB_IGNORE_P ) ; return 1 ; case HTML_N_PRE_PLAIN : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; } obuf -> flag &= ~ RB_PRE ; return 1 ; case HTML_LISTING : case HTML_XMP : case HTML_PLAINTEXT : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } obuf -> flag |= ( RB_PLAIN | RB_IGNORE_P ) ; switch ( cmd ) { case HTML_LISTING : obuf -> end_tag = HTML_N_LISTING ; break ; case HTML_XMP : obuf -> end_tag = HTML_N_XMP ; break ; case HTML_PLAINTEXT : obuf -> end_tag = MAX_HTMLTAG ; break ; } return 1 ; case HTML_N_LISTING : case HTML_N_XMP : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; } obuf -> flag &= ~ RB_PLAIN ; obuf -> end_tag = 0 ; return 1 ; case HTML_SCRIPT : obuf -> flag |= RB_SCRIPT ; obuf -> end_tag = HTML_N_SCRIPT ; return 1 ; case HTML_STYLE : obuf -> flag |= RB_STYLE ; obuf -> end_tag = HTML_N_STYLE ; return 1 ; case HTML_N_SCRIPT : obuf -> flag &= ~ RB_SCRIPT ; obuf -> end_tag = 0 ; return 1 ; case HTML_N_STYLE : obuf -> flag &= ~ RB_STYLE ; obuf -> end_tag = 0 ; return 1 ; case HTML_A : if ( obuf -> anchor . url ) close_anchor ( h_env , obuf ) ; hseq = 0 ; if ( parsedtag_get_value ( tag , ATTR_HREF , & p ) ) obuf -> anchor . url = Strnew_charp ( p ) -> ptr ; if ( parsedtag_get_value ( tag , ATTR_TARGET , & p ) ) obuf -> anchor . target = Strnew_charp ( p ) -> ptr ; if ( parsedtag_get_value ( tag , ATTR_REFERER , & p ) ) obuf -> anchor . referer = Strnew_charp ( p ) -> ptr ; if ( parsedtag_get_value ( tag , ATTR_TITLE , & p ) ) obuf -> anchor . title = Strnew_charp ( p ) -> ptr ; if ( parsedtag_get_value ( tag , ATTR_ACCESSKEY , & p ) ) obuf -> anchor . accesskey = ( unsigned char ) * p ; if ( parsedtag_get_value ( tag , ATTR_HSEQ , & hseq ) ) obuf -> anchor . hseq = hseq ; if ( hseq == 0 && obuf -> anchor . url ) { obuf -> anchor . hseq = cur_hseq ; tmp = process_anchor ( tag , h_env -> tagbuf -> ptr ) ; push_tag ( obuf , tmp -> ptr , HTML_A ) ; if ( displayLinkNumber ) HTMLlineproc1 ( getLinkNumberStr ( - 1 ) -> ptr , h_env ) ; return 1 ; } return 0 ; case HTML_N_A : close_anchor ( h_env , obuf ) ; return 1 ; case HTML_IMG : tmp = process_img ( tag , h_env -> limit ) ; HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_IMG_ALT : if ( parsedtag_get_value ( tag , ATTR_SRC , & p ) ) obuf -> img_alt = Strnew_charp ( p ) ; # ifdef USE_IMAGE i = 0 ; if ( parsedtag_get_value ( tag , ATTR_TOP_MARGIN , & i ) ) { if ( i > obuf -> top_margin ) obuf -> top_margin = i ; } i = 0 ; if ( parsedtag_get_value ( tag , ATTR_BOTTOM_MARGIN , & i ) ) { if ( i > obuf -> bottom_margin ) obuf -> bottom_margin = i ; } # endif return 0 ; case HTML_N_IMG_ALT : if ( obuf -> img_alt ) { if ( ! close_effect0 ( obuf , HTML_IMG_ALT ) ) push_tag ( obuf , \"</img_alt>\" , HTML_N_IMG_ALT ) ; obuf -> img_alt = NULL ; } return 1 ; case HTML_INPUT_ALT : i = 0 ; if ( parsedtag_get_value ( tag , ATTR_TOP_MARGIN , & i ) ) { if ( i > obuf -> top_margin ) obuf -> top_margin = i ; } i = 0 ; if ( parsedtag_get_value ( tag , ATTR_BOTTOM_MARGIN , & i ) ) { if ( i > obuf -> bottom_margin ) obuf -> bottom_margin = i ; } if ( parsedtag_get_value ( tag , ATTR_HSEQ , & hseq ) ) { obuf -> input_alt . hseq = hseq ; } if ( parsedtag_get_value ( tag , ATTR_FID , & i ) ) { obuf -> input_alt . fid = i ; } if ( parsedtag_get_value ( tag , ATTR_TYPE , & p ) ) { obuf -> input_alt . type = Strnew_charp ( p ) ; } if ( parsedtag_get_value ( tag , ATTR_VALUE , & p ) ) { obuf -> input_alt . value = Strnew_charp ( p ) ; } if ( parsedtag_get_value ( tag , ATTR_NAME , & p ) ) { obuf -> input_alt . name = Strnew_charp ( p ) ; } obuf -> input_alt . in = 1 ; return 0 ; case HTML_N_INPUT_ALT : if ( obuf -> input_alt . in ) { if ( ! close_effect0 ( obuf , HTML_INPUT_ALT ) ) push_tag ( obuf , \"</input_alt>\" , HTML_N_INPUT_ALT ) ; obuf -> input_alt . hseq = 0 ; obuf -> input_alt . fid = - 1 ; obuf -> input_alt . in = 0 ; obuf -> input_alt . type = NULL ; obuf -> input_alt . name = NULL ; obuf -> input_alt . value = NULL ; } return 1 ; case HTML_TABLE : close_anchor ( h_env , obuf ) ; obuf -> table_level ++ ; if ( obuf -> table_level >= MAX_TABLE ) break ; w = BORDER_NONE ; x = 2 ; y = 1 ; z = 0 ; width = 0 ; if ( parsedtag_exists ( tag , ATTR_BORDER ) ) { if ( parsedtag_get_value ( tag , ATTR_BORDER , & w ) ) { if ( w > 2 ) w = BORDER_THICK ; else if ( w < 0 ) { w = BORDER_THIN ; } } else w = BORDER_THIN ; } if ( DisplayBorders && w == BORDER_NONE ) w = BORDER_THIN ; if ( parsedtag_get_value ( tag , ATTR_WIDTH , & i ) ) { if ( obuf -> table_level == 0 ) width = REAL_WIDTH ( i , h_env -> limit - envs [ h_env -> envc ] . indent ) ; else width = RELATIVE_WIDTH ( i ) ; } if ( parsedtag_exists ( tag , ATTR_HBORDER ) ) w = BORDER_NOWIN ; # define MAX_CELLSPACING 1000 # define MAX_CELLPADDING 1000 # define MAX_VSPACE 1000 parsedtag_get_value ( tag , ATTR_CELLSPACING , & x ) ; parsedtag_get_value ( tag , ATTR_CELLPADDING , & y ) ; parsedtag_get_value ( tag , ATTR_VSPACE , & z ) ; if ( x > MAX_CELLSPACING ) x = MAX_CELLSPACING ; if ( y > MAX_CELLPADDING ) y = MAX_CELLPADDING ; if ( z > MAX_VSPACE ) z = MAX_VSPACE ; # ifdef ID_EXT parsedtag_get_value ( tag , ATTR_ID , & id ) ; # endif tables [ obuf -> table_level ] = begin_table ( w , x , y , z ) ; # ifdef ID_EXT if ( id != NULL ) tables [ obuf -> table_level ] -> id = Strnew_charp ( id ) ; # endif table_mode [ obuf -> table_level ] . pre_mode = 0 ; table_mode [ obuf -> table_level ] . indent_level = 0 ; table_mode [ obuf -> table_level ] . nobr_level = 0 ; table_mode [ obuf -> table_level ] . caption = 0 ; table_mode [ obuf -> table_level ] . end_tag = 0 ; # ifndef TABLE_EXPAND tables [ obuf -> table_level ] -> total_width = width ; # else tables [ obuf -> table_level ] -> real_width = width ; tables [ obuf -> table_level ] -> total_width = 0 ; # endif return 1 ; case HTML_N_TABLE : return 1 ; case HTML_CENTER : CLOSE_A ; if ( ! ( obuf -> flag & ( RB_PREMODE | RB_IGNORE_P ) ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_SAVE_FLAG ( obuf ) ; RB_SET_ALIGN ( obuf , RB_CENTER ) ; return 1 ; case HTML_N_CENTER : CLOSE_A ; if ( ! ( obuf -> flag & RB_PREMODE ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_RESTORE_FLAG ( obuf ) ; return 1 ; case HTML_DIV : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; set_alignment ( obuf , tag ) ; return 1 ; case HTML_N_DIV : CLOSE_A ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_RESTORE_FLAG ( obuf ) ; return 1 ; case HTML_DIV_INT : CLOSE_P ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; set_alignment ( obuf , tag ) ; return 1 ; case HTML_N_DIV_INT : CLOSE_P ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_RESTORE_FLAG ( obuf ) ; return 1 ; case HTML_FORM : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; tmp = process_form ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_N_FORM : CLOSE_A ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; process_n_form ( ) ; return 1 ; case HTML_INPUT : close_anchor ( h_env , obuf ) ; tmp = process_input ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_BUTTON : tmp = process_button ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_N_BUTTON : tmp = process_n_button ( ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_SELECT : close_anchor ( h_env , obuf ) ; tmp = process_select ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; obuf -> flag |= RB_INSELECT ; obuf -> end_tag = HTML_N_SELECT ; return 1 ; case HTML_N_SELECT : obuf -> flag &= ~ RB_INSELECT ; obuf -> end_tag = 0 ; tmp = process_n_select ( ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_OPTION : return 1 ; case HTML_TEXTAREA : close_anchor ( h_env , obuf ) ; tmp = process_textarea ( tag , h_env -> limit ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; obuf -> flag |= RB_INTXTA ; obuf -> end_tag = HTML_N_TEXTAREA ; return 1 ; case HTML_N_TEXTAREA : obuf -> flag &= ~ RB_INTXTA ; obuf -> end_tag = 0 ; tmp = process_n_textarea ( ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_ISINDEX : p = \"\" ; q = \"!CURRENT_URL!\" ; parsedtag_get_value ( tag , ATTR_PROMPT , & p ) ; parsedtag_get_value ( tag , ATTR_ACTION , & q ) ; tmp = Strnew_m_charp ( \"<form<S2SV_blank>method=get<S2SV_blank>action=\\\\\"\" , html_quote ( q ) , \"\\\\\">\" , html_quote ( p ) , \"<input<S2SV_blank>type=text<S2SV_blank>name=\\\\\"\\\\\"<S2SV_blank>accept></form>\" , NULL ) ; HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_META : p = q = r = NULL ; parsedtag_get_value ( tag , ATTR_HTTP_EQUIV , & p ) ; parsedtag_get_value ( tag , ATTR_CONTENT , & q ) ; # ifdef USE_M17N parsedtag_get_value ( tag , ATTR_CHARSET , & r ) ; if ( r ) { SKIP_BLANKS ( r ) ; meta_charset = wc_guess_charset ( r , 0 ) ; } else if ( p && q && ! strcasecmp ( p , \"Content-Type\" ) && ( q = strcasestr ( q , \"charset\" ) ) != NULL ) { q += 7 ; SKIP_BLANKS ( q ) ; if ( * q == '=' ) { q ++ ; SKIP_BLANKS ( q ) ; meta_charset = wc_guess_charset ( q , 0 ) ; } } else # endif if ( p && q && ! strcasecmp ( p , \"refresh\" ) ) { int refresh_interval ; tmp = NULL ; refresh_interval = getMetaRefreshParam ( q , & tmp ) ; if ( tmp ) { q = html_quote ( tmp -> ptr ) ; tmp = Sprintf ( \"Refresh<S2SV_blank>(%d<S2SV_blank>sec)<S2SV_blank><a<S2SV_blank>href=\\\\\"%s\\\\\">%s</a>\" , refresh_interval , q , q ) ; } else if ( refresh_interval > 0 ) tmp = Sprintf ( \"Refresh<S2SV_blank>(%d<S2SV_blank>sec)\" , refresh_interval ) ; if ( tmp ) { HTMLlineproc1 ( tmp -> ptr , h_env ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! is_redisplay && ! ( ( obuf -> flag & RB_NOFRAMES ) && RenderFrame ) ) { tag -> need_reconstruct = TRUE ; return 0 ; } } } return 1 ; case HTML_BASE : # if defined ( USE_M17N ) || defined ( USE_IMAGE ) p = NULL ; if ( parsedtag_get_value ( tag , ATTR_HREF , & p ) ) { cur_baseURL = New ( ParsedURL ) ; parseURL ( p , cur_baseURL , NULL ) ; } # endif case HTML_MAP : case HTML_N_MAP : case HTML_AREA : return 0 ; case HTML_DEL : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : obuf -> flag |= RB_DEL ; break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>[DEL:</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : obuf -> in_strike ++ ; if ( obuf -> in_strike == 1 ) { push_tag ( obuf , \"<s>\" , HTML_S ) ; } break ; } return 1 ; case HTML_N_DEL : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : obuf -> flag &= ~ RB_DEL ; break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>:DEL]</U>\" , h_env ) ; case DISPLAY_INS_DEL_FONTIFY : if ( obuf -> in_strike == 0 ) return 1 ; if ( obuf -> in_strike == 1 && close_effect0 ( obuf , HTML_S ) ) obuf -> in_strike = 0 ; if ( obuf -> in_strike > 0 ) { obuf -> in_strike -- ; if ( obuf -> in_strike == 0 ) { push_tag ( obuf , \"</s>\" , HTML_N_S ) ; } } break ; } return 1 ; case HTML_S : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : obuf -> flag |= RB_S ; break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>[S:</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : obuf -> in_strike ++ ; if ( obuf -> in_strike == 1 ) { push_tag ( obuf , \"<s>\" , HTML_S ) ; } break ; } return 1 ; case HTML_N_S : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : obuf -> flag &= ~ RB_S ; break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>:S]</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : if ( obuf -> in_strike == 0 ) return 1 ; if ( obuf -> in_strike == 1 && close_effect0 ( obuf , HTML_S ) ) obuf -> in_strike = 0 ; if ( obuf -> in_strike > 0 ) { obuf -> in_strike -- ; if ( obuf -> in_strike == 0 ) { push_tag ( obuf , \"</s>\" , HTML_N_S ) ; } } } return 1 ; case HTML_INS : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>[INS:</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : obuf -> in_ins ++ ; if ( obuf -> in_ins == 1 ) { push_tag ( obuf , \"<ins>\" , HTML_INS ) ; } break ; } return 1 ; case HTML_N_INS : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>:INS]</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : if ( obuf -> in_ins == 0 ) return 1 ; if ( obuf -> in_ins == 1 && close_effect0 ( obuf , HTML_INS ) ) obuf -> in_ins = 0 ; if ( obuf -> in_ins > 0 ) { obuf -> in_ins -- ; if ( obuf -> in_ins == 0 ) { push_tag ( obuf , \"</ins>\" , HTML_N_INS ) ; } } break ; } return 1 ; case HTML_SUP : if ( ! ( obuf -> flag & ( RB_DEL | RB_S ) ) ) HTMLlineproc1 ( \"^\" , h_env ) ; return 1 ; case HTML_N_SUP : return 1 ; case HTML_SUB : if ( ! ( obuf -> flag & ( RB_DEL | RB_S ) ) ) HTMLlineproc1 ( \"[\" , h_env ) ; return 1 ; case HTML_N_SUB : if ( ! ( obuf -> flag & ( RB_DEL | RB_S ) ) ) HTMLlineproc1 ( \"]\" , h_env ) ; return 1 ; case HTML_FONT : case HTML_N_FONT : case HTML_NOP : return 1 ; case HTML_BGSOUND : if ( view_unseenobject ) { if ( parsedtag_get_value ( tag , ATTR_SRC , & p ) ) { Str s ; q = html_quote ( p ) ; s = Sprintf ( \"<A<S2SV_blank>HREF=\\\\\"%s\\\\\">bgsound(%s)</A>\" , q , q ) ; HTMLlineproc1 ( s -> ptr , h_env ) ; } } return 1 ; case HTML_EMBED : if ( view_unseenobject ) { if ( parsedtag_get_value ( tag , ATTR_SRC , & p ) ) { Str s ; q = html_quote ( p ) ; s = Sprintf ( \"<A<S2SV_blank>HREF=\\\\\"%s\\\\\">embed(%s)</A>\" , q , q ) ; HTMLlineproc1 ( s -> ptr , h_env ) ; } } return 1 ; case HTML_APPLET : if ( view_unseenobject ) { if ( parsedtag_get_value ( tag , ATTR_ARCHIVE , & p ) ) { Str s ; q = html_quote ( p ) ; s = Sprintf ( \"<A<S2SV_blank>HREF=\\\\\"%s\\\\\">applet<S2SV_blank>archive(%s)</A>\" , q , q ) ; HTMLlineproc1 ( s -> ptr , h_env ) ; } } return 1 ; case HTML_BODY : if ( view_unseenobject ) { if ( parsedtag_get_value ( tag , ATTR_BACKGROUND , & p ) ) { Str s ; q = html_quote ( p ) ; s = Sprintf ( \"<IMG<S2SV_blank>SRC=\\\\\"%s\\\\\"<S2SV_blank>ALT=\\\\\"bg<S2SV_blank>image(%s)\\\\\"><BR>\" , q , q ) ; HTMLlineproc1 ( s -> ptr , h_env ) ; } } case HTML_N_HEAD : if ( obuf -> flag & RB_TITLE ) HTMLlineproc1 ( \"</title>\" , h_env ) ; case HTML_HEAD : case HTML_N_BODY : return 1 ; default : return 0 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( h_env -> envc == 0 || ( h_env -> envc_real < h_env -> nenv && envs [ h_env -> envc ] . env != HTML_DL && envs [ h_env -> envc ] . env != HTML_DL_COMPACT ) ) { PUSH_ENV ( HTML_DL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16718\n\n```\nCWE-78 static int r_core_cmd_subst_i ( RCore * core , char * cmd , char * colon , bool * tmpseek ) { RList * tmpenvs = r_list_newf ( tmpenvs_free ) ; const char * quotestr = \"`\" ; const char * tick = NULL ; char * ptr , * ptr2 , * str ; char * arroba = NULL ; char * grep = NULL ; RIODesc * tmpdesc = NULL ; int pamode = ! core -> io -> va ; int i , ret = 0 , pipefd ; bool usemyblock = false ; int scr_html = - 1 ; int scr_color = - 1 ; bool eos = false ; bool haveQuote = false ; bool oldfixedarch = core -> fixedarch ; bool oldfixedbits = core -> fixedbits ; bool cmd_tmpseek = false ; ut64 tmpbsz = core -> blocksize ; int cmd_ignbithints = - 1 ; if ( ! cmd ) { r_list_free ( tmpenvs ) ; return 0 ; } cmd = r_str_trim_head_tail ( cmd ) ; char * $0 = strstr ( cmd , \"$(\" ) ; if ( $0 ) { char * $1 = strchr ( $0 + 2 , ')' ) ; if ( $1 ) { * $0 = '`' ; * $1 = '`' ; memmove ( $0 + 1 , $0 + 2 , strlen ( $0 + 2 ) + 1 ) ; } else { eprintf ( \"Unterminated<S2SV_blank>$()<S2SV_blank>block\\\\n\" ) ; } } switch ( * cmd ) { case '.' : if ( cmd [ 1 ] == \\'\"\\' ) { r_list_free ( tmpenvs ) ; return r_cmd_call ( core -> rcmd , cmd ) ; } break ; case \\'\"\\' : for ( ; * cmd ; ) { int pipefd = - 1 ; ut64 oseek = UT64_MAX ; char * line , * p ; haveQuote = * cmd == \\'\"\\' ; if ( haveQuote ) { cmd ++ ; p = * cmd ? find_eoq ( cmd ) : NULL ; if ( ! p || ! * p ) { eprintf ( \"Missing<S2SV_blank>\\\\\"<S2SV_blank>in<S2SV_blank>(%s).\" , cmd ) ; r_list_free ( tmpenvs ) ; return false ; } * p ++ = 0 ; if ( ! * p ) { eos = true ; } } else { char * sc = strchr ( cmd , ';' ) ; if ( sc ) { * sc = 0 ; } r_core_cmd0 ( core , cmd ) ; if ( ! sc ) { break ; } cmd = sc + 1 ; continue ; } <S2SV_StartBug> if ( * p ) { <S2SV_EndBug> if ( p [ 0 ] == '@' ) { p -- ; } while ( p [ 1 ] == ';' || IS_WHITESPACE ( p [ 1 ] ) ) { p ++ ; } if ( p [ 1 ] == '@' || ( p [ 1 ] && p [ 2 ] == '@' ) ) { char * q = strchr ( p + 1 , \\'\"\\' ) ; if ( q ) { <S2SV_StartBug> * q = 0 ; <S2SV_EndBug> } haveQuote = q != NULL ; oseek = core -> offset ; r_core_seek ( core , r_num_math ( core -> num , p + 2 ) , 1 ) ; if ( q ) { * p = \\'\"\\' ; p = q ; } else { p = strchr ( p + 1 , ';' ) ; } } if ( p && * p && p [ 1 ] == '>' ) { str = p + 2 ; while ( * str == '>' ) { str ++ ; } str = ( char * ) r_str_trim_ro ( str ) ; r_cons_flush ( ) ; const bool append = p [ 2 ] == '>' ; pipefd = r_cons_pipe_open ( str , 1 , append ) ; } } line = strdup ( cmd ) ; line = r_str_replace ( line , \"\\\\\\\\\\\\\"\" , \"\\\\\"\" , true ) ; if ( p && * p && p [ 1 ] == '|' ) { str = p + 2 ; while ( IS_WHITESPACE ( * str ) ) { str ++ ; } r_core_cmd_pipe ( core , cmd , str ) ; } else { r_cmd_call ( core -> rcmd , line ) ; } free ( line ) ; if ( oseek != UT64_MAX ) { r_core_seek ( core , oseek , 1 ) ; } if ( pipefd != - 1 ) { r_cons_flush ( ) ; r_cons_pipe_close ( pipefd ) ; } if ( ! p ) { break ; } if ( eos ) { break ; } if ( haveQuote ) { if ( * p == ';' ) { cmd = p + 1 ; } else { if ( * p == \\'\"\\' ) { <S2SV_StartBug> cmd = p + 1 ; <S2SV_EndBug> } else { <S2SV_StartBug> * p = \\'\"\\' ; <S2SV_EndBug> cmd = p ; } } } else { cmd = p + 1 ; } } r_list_free ( tmpenvs ) ; return true ; case '(' : if ( cmd [ 1 ] != '*' && ! strstr ( cmd , \")()\" ) ) { r_list_free ( tmpenvs ) ; return r_cmd_call ( core -> rcmd , cmd ) ; } break ; case '?' : if ( cmd [ 1 ] == '>' ) { r_core_cmd_help ( core , help_msg_greater_sign ) ; r_list_free ( tmpenvs ) ; return true ; } } if ( * cmd != '#' ) { ptr = ( char * ) r_str_firstbut ( cmd , '#' , \"`\\\\\"\" ) ; if ( ptr && ( ptr [ 1 ] == '<S2SV_blank>' || ptr [ 1 ] == '\\\\t' ) ) { * ptr = '\\\\0' ; } } if ( * cmd != '#' ) { ptr = ( char * ) r_str_lastbut ( cmd , ';' , quotestr ) ; if ( colon && ptr ) { int ret ; * ptr = '\\\\0' ; if ( r_core_cmd_subst ( core , cmd ) == - 1 ) { r_list_free ( tmpenvs ) ; return - 1 ; } cmd = ptr + 1 ; ret = r_core_cmd_subst ( core , cmd ) ; * ptr = ';' ; r_list_free ( tmpenvs ) ; return ret ; } } ptr = ( char * ) r_str_lastbut ( cmd , '|' , quotestr ) ; if ( ptr ) { if ( ptr > cmd ) { char * ch = ptr - 1 ; if ( * ch == '\\\\\\\\' ) { memmove ( ch , ptr , strlen ( ptr ) + 1 ) ; goto escape_pipe ; } } char * ptr2 = strchr ( cmd , '`' ) ; if ( ! ptr2 || ( ptr2 && ptr2 > ptr ) ) { if ( ! tick || ( tick && tick > ptr ) ) { * ptr = '\\\\0' ; cmd = r_str_trim_nc ( cmd ) ; if ( ! strcmp ( ptr + 1 , \"?\" ) ) { r_core_cmd_help ( core , help_msg_vertical_bar ) ; r_list_free ( tmpenvs ) ; return ret ; } else if ( ! strncmp ( ptr + 1 , \"H\" , 1 ) ) { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , true ) ; } else if ( ! strcmp ( ptr + 1 , \"T\" ) ) { scr_color = r_config_get_i ( core -> config , \"scr.color\" ) ; r_config_set_i ( core -> config , \"scr.color\" , COLOR_MODE_DISABLED ) ; core -> cons -> use_tts = true ; } else if ( ! strcmp ( ptr + 1 , \".\" ) ) { ret = * cmd ? r_core_cmdf ( core , \".%s\" , cmd ) : 0 ; r_list_free ( tmpenvs ) ; return ret ; } else if ( ptr [ 1 ] ) { int value = core -> num -> value ; if ( * cmd ) { r_core_cmd_pipe ( core , cmd , ptr + 1 ) ; } else { char * res = r_io_system ( core -> io , ptr + 1 ) ; if ( res ) { r_cons_printf ( \"%s\\\\n\" , res ) ; free ( res ) ; } } core -> num -> value = value ; r_list_free ( tmpenvs ) ; return 0 ; } else { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , 0 ) ; scr_color = r_config_get_i ( core -> config , \"scr.color\" ) ; r_config_set_i ( core -> config , \"scr.color\" , COLOR_MODE_DISABLED ) ; } } } } escape_pipe : ptr = ( char * ) r_str_lastbut ( cmd , '&' , quotestr ) ; while ( ptr && * ptr && ptr [ 1 ] == '&' ) { * ptr = '\\\\0' ; ret = r_cmd_call ( core -> rcmd , cmd ) ; if ( ret == - 1 ) { eprintf ( \"command<S2SV_blank>error(%s)\\\\n\" , cmd ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } r_list_free ( tmpenvs ) ; return ret ; } for ( cmd = ptr + 2 ; cmd && * cmd == '<S2SV_blank>' ; cmd ++ ) { ; } ptr = strchr ( cmd , '&' ) ; } R_FREE ( core -> oobi ) ; ptr = strstr ( cmd , \"?*\" ) ; if ( ptr && ( ptr == cmd || ptr [ - 1 ] != '~' ) ) { ptr [ 0 ] = 0 ; if ( * cmd != '#' ) { int detail = 0 ; if ( cmd < ptr && ptr [ - 1 ] == '?' ) { detail ++ ; if ( cmd < ptr - 1 && ptr [ - 2 ] == '?' ) { detail ++ ; } } r_cons_break_push ( NULL , NULL ) ; recursive_help ( core , detail , cmd ) ; r_cons_break_pop ( ) ; r_cons_grep_parsecmd ( ptr + 2 , \"`\" ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } r_list_free ( tmpenvs ) ; return 0 ; } } # if 0 ptr = strchr ( cmd , '<' ) ; if ( ptr ) { ptr [ 0 ] = '\\\\0' ; if ( r_cons_singleton ( ) -> is_interactive ) { if ( ptr [ 1 ] == '<' ) { for ( str = ptr + 2 ; str [ 0 ] == '<S2SV_blank>' ; str ++ ) { } eprintf ( \"==><S2SV_blank>Reading<S2SV_blank>from<S2SV_blank>stdin<S2SV_blank>until<S2SV_blank>\\'%s\\'\\\\n\" , str ) ; free ( core -> oobi ) ; core -> oobi = malloc ( 1 ) ; if ( core -> oobi ) { core -> oobi [ 0 ] = '\\\\0' ; } core -> oobi_len = 0 ; for ( ; ; ) { char buf [ 1024 ] ; int ret ; write ( 1 , \"><S2SV_blank>\" , 2 ) ; fgets ( buf , sizeof ( buf ) - 1 , stdin ) ; if ( feof ( stdin ) ) { break ; } if ( * buf ) buf [ strlen ( buf ) - 1 ] = '\\\\0' ; ret = strlen ( buf ) ; core -> oobi_len += ret ; core -> oobi = realloc ( core -> oobi , core -> oobi_len + 1 ) ; if ( core -> oobi ) { if ( ! strcmp ( buf , str ) ) { break ; } strcat ( ( char * ) core -> oobi , buf ) ; } } } else { for ( str = ptr + 1 ; * str == '<S2SV_blank>' ; str ++ ) { } if ( ! * str ) { goto next ; } eprintf ( \"Slurping<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , str ) ; free ( core -> oobi ) ; core -> oobi = ( ut8 * ) r_file_slurp ( str , & core -> oobi_len ) ; if ( ! core -> oobi ) { eprintf ( \"cannot<S2SV_blank>open<S2SV_blank>file\\\\n\" ) ; } else if ( ptr == cmd ) { return r_core_cmd_buffer ( core , ( const char * ) core -> oobi ) ; } } } else { eprintf ( \"Cannot<S2SV_blank>slurp<S2SV_blank>with<S2SV_blank><<<S2SV_blank>in<S2SV_blank>non-interactive<S2SV_blank>mode\\\\n\" ) ; r_list_free ( tmpenvs ) ; return 0 ; } } next : # endif ptr = ( char * ) r_str_firstbut ( cmd , '>' , \"\\\\\"\" ) ; if ( ptr ) { if ( ptr > cmd ) { char * ch = ptr - 1 ; if ( * ch == '\\\\\\\\' ) { memmove ( ch , ptr , strlen ( ptr ) + 1 ) ; goto escape_redir ; } } if ( ptr [ 0 ] && ptr [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_greater_sign ) ; r_list_free ( tmpenvs ) ; return true ; } int fdn = 1 ; int pipecolor = r_config_get_i ( core -> config , \"scr.color.pipe\" ) ; int use_editor = false ; int ocolor = r_config_get_i ( core -> config , \"scr.color\" ) ; * ptr = '\\\\0' ; str = r_str_trim_head_tail ( ptr + 1 + ( ptr [ 1 ] == '>' ) ) ; if ( ! * str ) { eprintf ( \"No<S2SV_blank>output?\\\\n\" ) ; goto next2 ; } if ( ptr > ( cmd + 1 ) && IS_WHITECHAR ( ptr [ - 2 ] ) ) { char * fdnum = ptr - 1 ; if ( * fdnum == 'H' ) { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , true ) ; pipecolor = true ; * fdnum = 0 ; } else { if ( IS_DIGIT ( * fdnum ) ) { fdn = * fdnum - '0' ; } * fdnum = 0 ; } } r_cons_set_interactive ( false ) ; if ( ! strcmp ( str , \"-\" ) ) { use_editor = true ; str = r_file_temp ( \"dumpedit\" ) ; r_config_set_i ( core -> config , \"scr.color\" , COLOR_MODE_DISABLED ) ; } const bool appendResult = ( ptr [ 1 ] == '>' ) ; if ( * str == '$' ) { char * o = r_core_cmd_str ( core , cmd ) ; if ( appendResult ) { char * oldText = r_cmd_alias_get ( core -> rcmd , str , 1 ) ; if ( oldText ) { char * two = r_str_newf ( \"%s%s\" , oldText , o ) ; if ( two ) { r_cmd_alias_set ( core -> rcmd , str , two , 1 ) ; free ( two ) ; } } else { char * n = r_str_newf ( \"$%s\" , o ) ; r_cmd_alias_set ( core -> rcmd , str , n , 1 ) ; free ( n ) ; } } else { char * n = r_str_newf ( \"$%s\" , o ) ; r_cmd_alias_set ( core -> rcmd , str , n , 1 ) ; free ( n ) ; } ret = 0 ; free ( o ) ; } else if ( fdn > 0 ) { pipefd = r_cons_pipe_open ( str , fdn , appendResult ) ; if ( pipefd != - 1 ) { if ( ! pipecolor ) { r_config_set_i ( core -> config , \"scr.color\" , COLOR_MODE_DISABLED ) ; } ret = r_core_cmd_subst ( core , cmd ) ; r_cons_flush ( ) ; r_cons_pipe_close ( pipefd ) ; } } r_cons_set_last_interactive ( ) ; if ( ! pipecolor ) { r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; } if ( use_editor ) { const char * editor = r_config_get ( core -> config , \"cfg.editor\" ) ; if ( editor && * editor ) { r_sys_cmdf ( \"%s<S2SV_blank>\\'%s\\'\" , editor , str ) ; r_file_rm ( str ) ; } else { eprintf ( \"No<S2SV_blank>cfg.editor<S2SV_blank>configured\\\\n\" ) ; } r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; free ( str ) ; } if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } core -> cons -> use_tts = false ; r_list_free ( tmpenvs ) ; return ret ; } escape_redir : next2 : ptr = strchr ( cmd , '`' ) ; if ( ptr ) { if ( ptr > cmd ) { char * ch = ptr - 1 ; if ( * ch == '\\\\\\\\' ) { memmove ( ch , ptr , strlen ( ptr ) + 1 ) ; goto escape_backtick ; } } bool empty = false ; int oneline = 1 ; if ( ptr [ 1 ] == '`' ) { memmove ( ptr , ptr + 1 , strlen ( ptr ) ) ; oneline = 0 ; empty = true ; } ptr2 = strchr ( ptr + 1 , '`' ) ; if ( empty ) { } else if ( ! ptr2 ) { eprintf ( \"parse:<S2SV_blank>Missing<S2SV_blank>backtick<S2SV_blank>in<S2SV_blank>expression.\\\\n\" ) ; goto fail ; } else { int value = core -> num -> value ; * ptr = '\\\\0' ; * ptr2 = '\\\\0' ; if ( ptr [ 1 ] == '!' ) { str = r_core_cmd_str_pipe ( core , ptr + 1 ) ; } else { int ocolor = r_config_get_i ( core -> config , \"scr.color\" ) ; r_config_set_i ( core -> config , \"scr.color\" , 0 ) ; core -> cmd_in_backticks = true ; str = r_core_cmd_str ( core , ptr + 1 ) ; core -> cmd_in_backticks = false ; r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; } if ( ! str ) { goto fail ; } if ( * str == '|' || * str == '*' ) { eprintf ( \"r_core_cmd_subst_i:<S2SV_blank>invalid<S2SV_blank>backticked<S2SV_blank>command\\\\n\" ) ; free ( str ) ; goto fail ; } if ( oneline && str ) { for ( i = 0 ; str [ i ] ; i ++ ) { if ( str [ i ] == '\\\\n' ) { str [ i ] = '<S2SV_blank>' ; } } } str = r_str_append ( str , ptr2 + 1 ) ; cmd = r_str_append ( strdup ( cmd ) , str ) ; core -> num -> value = value ; ret = r_core_cmd_subst ( core , cmd ) ; free ( cmd ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } free ( str ) ; r_list_free ( tmpenvs ) ; return ret ; } } escape_backtick : if ( * cmd != \\'\"\\' && * cmd ) { const char * s = strstr ( cmd , \"~?\" ) ; if ( s ) { bool showHelp = false ; if ( cmd == s ) { showHelp = true ; } else { if ( ! strcmp ( s , \"~??\" ) ) { showHelp = true ; } } if ( showHelp ) { r_cons_grep_help ( ) ; r_list_free ( tmpenvs ) ; return true ; } } } if ( * cmd != '.' ) { grep = r_cons_grep_strip ( cmd , quotestr ) ; } if ( * cmd != \\'\"\\' ) { ptr = strchr ( cmd , '@' ) ; if ( ptr == cmd + 1 && * cmd == '?' ) { ptr = NULL ; } } else { ptr = NULL ; } cmd_tmpseek = core -> tmpseek = ptr ? true : false ; int rc = 0 ; if ( ptr ) { char * f , * ptr2 = strchr ( ptr + 1 , '!' ) ; ut64 addr = core -> offset ; bool addr_is_set = false ; char * tmpbits = NULL ; const char * offstr = NULL ; bool is_bits_set = false ; bool is_arch_set = false ; char * tmpeval = NULL ; char * tmpasm = NULL ; bool flgspc_changed = false ; int tmpfd = - 1 ; int sz , len ; ut8 * buf ; * ptr ++ = '\\\\0' ; repeat_arroba : arroba = ( ptr [ 0 ] && ptr [ 1 ] && ptr [ 2 ] ) ? strchr ( ptr + 2 , '@' ) : NULL ; if ( arroba ) { * arroba = 0 ; } for ( ; * ptr == '<S2SV_blank>' ; ptr ++ ) { } if ( * ptr && ptr [ 1 ] == ':' ) { } else { ptr -- ; } ptr = r_str_trim_tail ( ptr ) ; if ( ptr [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_at ) ; } else if ( ptr [ 1 ] == '%' ) { char * k = strdup ( ptr + 2 ) ; char * v = strchr ( k , '=' ) ; if ( v ) { * v ++ = 0 ; r_sys_setenv ( k , v ) ; r_list_append ( tmpenvs , k ) ; } else { free ( k ) ; } } else if ( ptr [ 1 ] == '.' ) { if ( ptr [ 2 ] == '.' ) { if ( ptr [ 3 ] == '.' ) { ut64 addr = r_num_tail ( core -> num , core -> offset , ptr + 4 ) ; r_core_block_size ( core , R_ABS ( ( st64 ) addr - ( st64 ) core -> offset ) ) ; goto fuji ; } else { addr = r_num_tail ( core -> num , core -> offset , ptr + 3 ) ; r_core_seek ( core , addr , 1 ) ; cmd_tmpseek = core -> tmpseek = true ; goto fuji ; } } else { eprintf ( \"TODO:<S2SV_blank>what<S2SV_blank>do<S2SV_blank>you<S2SV_blank>expect<S2SV_blank>for<S2SV_blank>@.<S2SV_blank>import<S2SV_blank>offset<S2SV_blank>from<S2SV_blank>file<S2SV_blank>maybe?\\\\n\" ) ; } } else if ( ptr [ 0 ] && ptr [ 1 ] == ':' && ptr [ 2 ] ) { switch ( ptr [ 0 ] ) { case 'F' : flgspc_changed = r_flag_space_push ( core -> flags , ptr + 2 ) ; break ; case 'B' : { int index = ( int ) r_num_math ( core -> num , ptr + 2 ) ; RAnalBlock * bb = r_anal_bb_from_offset ( core -> anal , core -> offset ) ; if ( bb ) { if ( index < 0 ) { index = bb -> ninstr + index ; } if ( index >= 0 && index < bb -> ninstr ) { ut16 inst_off = r_anal_bb_offset_inst ( bb , index ) ; r_core_seek ( core , bb -> addr + inst_off , 1 ) ; cmd_tmpseek = core -> tmpseek = true ; } else { eprintf ( \"The<S2SV_blank>current<S2SV_blank>basic<S2SV_blank>block<S2SV_blank>has<S2SV_blank>%d<S2SV_blank>instructions\\\\n\" , bb -> ninstr ) ; } } else { eprintf ( \"Can\\'t<S2SV_blank>find<S2SV_blank>a<S2SV_blank>basic<S2SV_blank>block<S2SV_blank>for<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , core -> offset ) ; } break ; } break ; case 'f' : f = r_file_slurp ( ptr + 2 , & sz ) ; if ( f ) { { RBuffer * b = r_buf_new_with_bytes ( ( const ut8 * ) f , sz ) ; RIODesc * d = r_io_open_buffer ( core -> io , b , R_PERM_RWX , 0 ) ; if ( d ) { if ( tmpdesc ) { r_io_desc_close ( tmpdesc ) ; } tmpdesc = d ; if ( pamode ) { r_config_set_i ( core -> config , \"io.va\" , 1 ) ; } r_io_map_new ( core -> io , d -> fd , d -> perm , 0 , core -> offset , r_buf_size ( b ) ) ; } } # if 0 buf = malloc ( sz ) ; if ( buf ) { free ( core -> block ) ; core -> block = buf ; core -> blocksize = sz ; memcpy ( core -> block , f , sz ) ; usemyblock = true ; } else { eprintf ( \"cannot<S2SV_blank>alloc<S2SV_blank>%d\" , sz ) ; } free ( f ) ; # endif } else { eprintf ( \"cannot<S2SV_blank>open<S2SV_blank>\\'%s\\'\\\\n\" , ptr + 3 ) ; } break ; case 'r' : if ( ptr [ 1 ] == ':' ) { ut64 regval ; char * mander = strdup ( ptr + 2 ) ; char * sep = findSeparator ( mander ) ; if ( sep ) { char ch = * sep ; * sep = 0 ; regval = r_debug_reg_get ( core -> dbg , mander ) ; * sep = ch ; char * numexpr = r_str_newf ( \"0x%\" PFMT64x \"%s\" , regval , sep ) ; regval = r_num_math ( core -> num , numexpr ) ; free ( numexpr ) ; } else { regval = r_debug_reg_get ( core -> dbg , ptr + 2 ) ; } r_core_seek ( core , regval , 1 ) ; cmd_tmpseek = core -> tmpseek = true ; free ( mander ) ; } break ; case 'b' : is_bits_set = set_tmp_bits ( core , r_num_math ( core -> num , ptr + 2 ) , & tmpbits ) ; cmd_ignbithints = r_config_get_i ( core -> config , \"anal.ignbithints\" ) ; r_config_set_i ( core -> config , \"anal.ignbithints\" , 1 ) ; break ; case 'i' : { ut64 addr = r_num_math ( core -> num , ptr + 2 ) ; if ( addr ) { r_core_cmdf ( core , \"so<S2SV_blank>%s\" , ptr + 2 ) ; cmd_tmpseek = core -> tmpseek = true ; } } break ; case 'e' : { char * cmd = parse_tmp_evals ( core , ptr + 2 ) ; if ( ! tmpeval ) { tmpeval = cmd ; } else { tmpeval = r_str_prepend ( tmpeval , cmd ) ; free ( cmd ) ; } } break ; case 'x' : if ( ptr [ 1 ] == ':' ) { buf = malloc ( strlen ( ptr + 2 ) + 1 ) ; if ( buf ) { len = r_hex_str2bin ( ptr + 2 , buf ) ; r_core_block_size ( core , R_ABS ( len ) ) ; if ( len > 0 ) { RBuffer * b = r_buf_new_with_bytes ( buf , len ) ; RIODesc * d = r_io_open_buffer ( core -> io , b , R_PERM_RWX , 0 ) ; if ( d ) { if ( tmpdesc ) { r_io_desc_close ( tmpdesc ) ; } tmpdesc = d ; if ( pamode ) { r_config_set_i ( core -> config , \"io.va\" , 1 ) ; } r_io_map_new ( core -> io , d -> fd , d -> perm , 0 , core -> offset , r_buf_size ( b ) ) ; r_core_block_size ( core , len ) ; r_core_block_read ( core ) ; } } else { eprintf ( \"Error:<S2SV_blank>Invalid<S2SV_blank>hexpairs<S2SV_blank>for<S2SV_blank>@x:\\\\n\" ) ; } free ( buf ) ; } else { eprintf ( \"cannot<S2SV_blank>allocate\\\\n\" ) ; } } else { eprintf ( \"Invalid<S2SV_blank>@x:<S2SV_blank>syntax\\\\n\" ) ; } break ; case 'k' : { char * out = sdb_querys ( core -> sdb , NULL , 0 , ptr + ( ( ptr [ 1 ] ) ? 2 : 1 ) ) ; if ( out ) { r_core_seek ( core , r_num_math ( core -> num , out ) , 1 ) ; free ( out ) ; usemyblock = true ; } } break ; case 'o' : if ( ptr [ 1 ] == ':' ) { tmpfd = core -> io -> desc ? core -> io -> desc -> fd : - 1 ; r_io_use_fd ( core -> io , atoi ( ptr + 2 ) ) ; } break ; case 'a' : if ( ptr [ 1 ] == ':' ) { char * q = strchr ( ptr + 2 , ':' ) ; if ( q ) { * q ++ = 0 ; int bits = r_num_math ( core -> num , q ) ; is_bits_set = set_tmp_bits ( core , bits , & tmpbits ) ; } is_arch_set = set_tmp_arch ( core , ptr + 2 , & tmpasm ) ; } else { eprintf ( \"Usage:<S2SV_blank>pd<S2SV_blank>10<S2SV_blank>@a:arm:32\\\\n\" ) ; } break ; case 's' : { len = strlen ( ptr + 2 ) ; r_core_block_size ( core , len ) ; const ut8 * buf = ( const ut8 * ) r_str_trim_ro ( ptr + 2 ) ; if ( len > 0 ) { RBuffer * b = r_buf_new_with_bytes ( buf , len ) ; RIODesc * d = r_io_open_buffer ( core -> io , b , R_PERM_RWX , 0 ) ; if ( ! core -> io -> va ) { r_config_set_i ( core -> config , \"io.va\" , 1 ) ; } if ( d ) { if ( tmpdesc ) { r_io_desc_close ( tmpdesc ) ; } tmpdesc = d ; if ( pamode ) { r_config_set_i ( core -> config , \"io.va\" , 1 ) ; } r_io_map_new ( core -> io , d -> fd , d -> perm , 0 , core -> offset , r_buf_size ( b ) ) ; r_core_block_size ( core , len ) ; } } } break ; default : goto ignore ; } * ptr = '@' ; char * trim = ptr - 2 ; while ( trim > cmd ) { if ( ! IS_WHITESPACE ( * trim ) ) { break ; } * trim = 0 ; trim -- ; } goto next_arroba ; } ignore : ptr = r_str_trim_head ( ptr + 1 ) - 1 ; cmd = r_str_trim_nc ( cmd ) ; if ( ptr2 ) { if ( strlen ( ptr + 1 ) == 13 && strlen ( ptr2 + 1 ) == 6 && ! memcmp ( ptr + 1 , \"0x\" , 2 ) && ! memcmp ( ptr2 + 1 , \"0x\" , 2 ) ) { } else if ( strlen ( ptr + 1 ) == 9 && strlen ( ptr2 + 1 ) == 4 ) { } else { * ptr2 = '\\\\0' ; if ( ! ptr2 [ 1 ] ) { goto fail ; } r_core_block_size ( core , r_num_math ( core -> num , ptr2 + 1 ) ) ; } } offstr = r_str_trim_head ( ptr + 1 ) ; addr = r_num_math ( core -> num , offstr ) ; addr_is_set = true ; if ( isalpha ( ( ut8 ) ptr [ 1 ] ) && ! addr ) { if ( ! r_flag_get ( core -> flags , ptr + 1 ) ) { eprintf ( \"Invalid<S2SV_blank>address<S2SV_blank>(%s)\\\\n\" , ptr + 1 ) ; goto fail ; } } else { char ch = * offstr ; if ( ch == '-' || ch == '+' ) { addr = core -> offset + addr ; } } if ( addr ) { RIODesc * d = tmpdesc ; if ( d ) { r_io_map_new ( core -> io , d -> fd , d -> perm , 0 , addr , r_io_desc_size ( d ) ) ; } } next_arroba : if ( arroba ) { ptr = arroba + 1 ; * arroba = '@' ; arroba = NULL ; goto repeat_arroba ; } core -> fixedblock = ! ! tmpdesc ; if ( core -> fixedblock ) { r_core_block_read ( core ) ; } if ( ptr [ 1 ] == '@' ) { if ( ptr [ 2 ] == '@' ) { char * rule = ptr + 3 ; while ( * rule && * rule == '<S2SV_blank>' ) { rule ++ ; } ret = r_core_cmd_foreach3 ( core , cmd , rule ) ; } else { ret = r_core_cmd_foreach ( core , cmd , ptr + 2 ) ; } } else { bool tmpseek = false ; const char * fromvars [ ] = { \"anal.from\" , \"diff.from\" , \"graph.from\" , \"io.buffer.from\" , \"lines.from\" , \"search.from\" , \"zoom.from\" , NULL } ; const char * tovars [ ] = { \"anal.to\" , \"diff.to\" , \"graph.to\" , \"io.buffer.to\" , \"lines.to\" , \"search.to\" , \"zoom.to\" , NULL } ; ut64 curfrom [ R_ARRAY_SIZE ( fromvars ) - 1 ] , curto [ R_ARRAY_SIZE ( tovars ) - 1 ] ; if ( ptr [ 1 ] == '(' ) { char * range = ptr + 3 ; char * p = strchr ( range , '<S2SV_blank>' ) ; if ( ! p ) { eprintf ( \"Usage:<S2SV_blank>/<S2SV_blank>ABCD<S2SV_blank>@..0x1000<S2SV_blank>0x3000\\\\n\" ) ; free ( tmpeval ) ; free ( tmpasm ) ; free ( tmpbits ) ; goto fail ; } * p = '\\\\x00' ; ut64 from = r_num_math ( core -> num , range ) ; ut64 to = r_num_math ( core -> num , p + 1 ) ; for ( i = 0 ; fromvars [ i ] ; i ++ ) { curfrom [ i ] = r_config_get_i ( core -> config , fromvars [ i ] ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { curto [ i ] = r_config_get_i ( core -> config , tovars [ i ] ) ; } for ( i = 0 ; fromvars [ i ] ; i ++ ) { r_config_set_i ( core -> config , fromvars [ i ] , from ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { r_config_set_i ( core -> config , tovars [ i ] , to ) ; } tmpseek = true ; } if ( usemyblock ) { if ( addr_is_set ) { core -> offset = addr ; } ret = r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) ; } else { if ( addr_is_set ) { if ( ptr [ 1 ] ) { r_core_seek ( core , addr , 1 ) ; r_core_block_read ( core ) ; } } ret = r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) ; } if ( tmpseek ) { for ( i = 0 ; fromvars [ i ] ; i ++ ) { r_config_set_i ( core -> config , fromvars [ i ] , curfrom [ i ] ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { r_config_set_i ( core -> config , tovars [ i ] , curto [ i ] ) ; } } } if ( ptr2 ) { * ptr2 = '!' ; r_core_block_size ( core , tmpbsz ) ; } if ( is_arch_set ) { core -> fixedarch = oldfixedarch ; r_config_set ( core -> config , \"asm.arch\" , tmpasm ) ; R_FREE ( tmpasm ) ; } if ( tmpfd != - 1 ) { r_io_use_fd ( core -> io , tmpfd ) ; } if ( tmpdesc ) { if ( pamode ) { r_config_set_i ( core -> config , \"io.va\" , 0 ) ; } r_io_desc_close ( tmpdesc ) ; tmpdesc = NULL ; } if ( is_bits_set ) { r_config_set ( core -> config , \"asm.bits\" , tmpbits ) ; core -> fixedbits = oldfixedbits ; } if ( tmpbsz != core -> blocksize ) { r_core_block_size ( core , tmpbsz ) ; } if ( tmpeval ) { r_core_cmd0 ( core , tmpeval ) ; R_FREE ( tmpeval ) ; } if ( flgspc_changed ) { r_flag_space_pop ( core -> flags ) ; } * ptr = '@' ; rc = ret ; goto beach ; } fuji : rc = cmd ? r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) : false ; beach : r_cons_grep_process ( grep ) ; if ( scr_html != - 1 ) { r_cons_flush ( ) ; r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } r_list_free ( tmpenvs ) ; if ( tmpdesc ) { r_io_desc_close ( tmpdesc ) ; tmpdesc = NULL ; } core -> fixedarch = oldfixedarch ; core -> fixedbits = oldfixedbits ; if ( tmpseek ) { * tmpseek = cmd_tmpseek ; } if ( cmd_ignbithints != - 1 ) { r_config_set_i ( core -> config , \"anal.ignbithints\" , cmd_ignbithints ) ; } return rc ; fail : rc = - 1 ; goto beach ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> continue ; } char op0 = 0 ; <S2SV_ModStart> q ) { op0 = * q ; <S2SV_ModStart> cmd = p <S2SV_ModEnd> ; } else <S2SV_ModStart> * p = op0 <S2SV_ModEnd> ; cmd =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-9275\n\n```\nCWE-200 int check_user_token ( const char * authfile , const char * username , const char * otp_id , int verbose , FILE * debug_file ) { char buf [ 1024 ] ; char * s_user , * s_token ; int retval = AUTH_ERROR ; int fd ; struct stat st ; FILE * opwfile ; fd = open ( authfile , O_RDONLY , 0 ) ; if ( fd < 0 ) { if ( verbose ) D ( debug_file , \"Cannot<S2SV_blank>open<S2SV_blank>file:<S2SV_blank>%s<S2SV_blank>(%s)\" , authfile , strerror ( errno ) ) ; return retval ; } if ( fstat ( fd , & st ) < 0 ) { if ( verbose ) D ( debug_file , \"Cannot<S2SV_blank>stat<S2SV_blank>file:<S2SV_blank>%s<S2SV_blank>(%s)\" , authfile , strerror ( errno ) ) ; close ( fd ) ; return retval ; } if ( ! S_ISREG ( st . st_mode ) ) { if ( verbose ) D ( debug_file , \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>regular<S2SV_blank>file\" , authfile ) ; close ( fd ) ; return retval ; } opwfile = fdopen ( fd , \"r\" ) ; if ( opwfile == NULL ) { if ( verbose ) D ( debug_file , \"fdopen:<S2SV_blank>%s\" , strerror ( errno ) ) ; close ( fd ) ; return retval ; } retval = AUTH_NO_TOKENS ; while ( fgets ( buf , 1024 , opwfile ) ) { char * saveptr = NULL ; if ( buf [ strlen ( buf ) - 1 ] == '\\\\n' ) buf [ strlen ( buf ) - 1 ] = '\\\\0' ; if ( buf [ 0 ] == '#' ) { if ( verbose ) D ( debug_file , \"Skipping<S2SV_blank>comment<S2SV_blank>line:<S2SV_blank>%s\" , buf ) ; continue ; } if ( verbose ) D ( debug_file , \"Authorization<S2SV_blank>line:<S2SV_blank>%s\" , buf ) ; s_user = strtok_r ( buf , \":\" , & saveptr ) ; if ( s_user && strcmp ( username , s_user ) == 0 ) { if ( verbose ) D ( debug_file , \"Matched<S2SV_blank>user:<S2SV_blank>%s\" , s_user ) ; retval = AUTH_NOT_FOUND ; do { s_token = strtok_r ( NULL , \":\" , & saveptr ) ; if ( verbose ) D ( debug_file , \"Authorization<S2SV_blank>token:<S2SV_blank>%s\" , s_token ) ; if ( s_token && otp_id && strcmp ( otp_id , s_token ) == 0 ) { if ( verbose ) D ( debug_file , \"Match<S2SV_blank>user/token<S2SV_blank>as<S2SV_blank>%s/%s\" , username , otp_id ) ; <S2SV_StartBug> return AUTH_FOUND ; <S2SV_EndBug> } } while ( s_token != NULL ) ; } } fclose ( opwfile ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> otp_id ) ; fclose ( opwfile ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int PARSER_FLAGS ( PyCompilerFlags * flags ) { int parser_flags = 0 ; if ( ! flags ) return 0 ; if ( flags -> cf_flags & PyCF_DONT_IMPLY_DEDENT ) parser_flags |= PyPARSE_DONT_IMPLY_DEDENT ; if ( flags -> cf_flags & PyCF_IGNORE_COOKIE ) parser_flags |= PyPARSE_IGNORE_COOKIE ; if ( flags -> cf_flags & CO_FUTURE_BARRY_AS_BDFL ) parser_flags |= PyPARSE_BARRY_AS_BDFL ; <S2SV_StartBug> return parser_flags ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= PyPARSE_BARRY_AS_BDFL ; if ( flags -> cf_flags & PyCF_TYPE_COMMENTS ) parser_flags |= PyPARSE_TYPE_COMMENTS ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13028\n\n```\nCWE-125 void bootp_print ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register const struct bootp * bp ; static const u_char vm_cmu [ 4 ] = VM_CMU ; static const u_char vm_rfc1048 [ 4 ] = VM_RFC1048 ; bp = ( const struct bootp * ) cp ; ND_TCHECK ( bp -> bp_op ) ; ND_PRINT ( ( ndo , \"BOOTP/DHCP,<S2SV_blank>%s\" , tok2str ( bootp_op_values , \"unknown<S2SV_blank>(0x%02x)\" , bp -> bp_op ) ) ) ; ND_TCHECK ( bp -> bp_hlen ) ; if ( bp -> bp_htype == 1 && bp -> bp_hlen == 6 && bp -> bp_op == BOOTPREQUEST ) { ND_TCHECK2 ( bp -> bp_chaddr [ 0 ] , 6 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>from<S2SV_blank>%s\" , etheraddr_string ( ndo , bp -> bp_chaddr ) ) ) ; } ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; if ( ! ndo -> ndo_vflag ) return ; ND_TCHECK ( bp -> bp_secs ) ; if ( bp -> bp_htype != 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>htype<S2SV_blank>%d\" , bp -> bp_htype ) ) ; if ( bp -> bp_htype != 1 || bp -> bp_hlen != 6 ) ND_PRINT ( ( ndo , \",<S2SV_blank>hlen<S2SV_blank>%d\" , bp -> bp_hlen ) ) ; if ( bp -> bp_hops ) ND_PRINT ( ( ndo , \",<S2SV_blank>hops<S2SV_blank>%d\" , bp -> bp_hops ) ) ; if ( EXTRACT_32BITS ( & bp -> bp_xid ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>xid<S2SV_blank>0x%x\" , EXTRACT_32BITS ( & bp -> bp_xid ) ) ) ; if ( EXTRACT_16BITS ( & bp -> bp_secs ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>secs<S2SV_blank>%d\" , EXTRACT_16BITS ( & bp -> bp_secs ) ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , <S2SV_EndBug> bittok2str ( bootp_flag_values , \"none\" , EXTRACT_16BITS ( & bp -> bp_flags ) ) ) ) ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( & bp -> bp_flags ) ) ) ; ND_TCHECK ( bp -> bp_ciaddr ) ; if ( EXTRACT_32BITS ( & bp -> bp_ciaddr . s_addr ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Client-IP<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp -> bp_ciaddr ) ) ) ; ND_TCHECK ( bp -> bp_yiaddr ) ; if ( EXTRACT_32BITS ( & bp -> bp_yiaddr . s_addr ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Your-IP<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp -> bp_yiaddr ) ) ) ; ND_TCHECK ( bp -> bp_siaddr ) ; if ( EXTRACT_32BITS ( & bp -> bp_siaddr . s_addr ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Server-IP<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp -> bp_siaddr ) ) ) ; ND_TCHECK ( bp -> bp_giaddr ) ; if ( EXTRACT_32BITS ( & bp -> bp_giaddr . s_addr ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Gateway-IP<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp -> bp_giaddr ) ) ) ; if ( bp -> bp_htype == 1 && bp -> bp_hlen == 6 ) { ND_TCHECK2 ( bp -> bp_chaddr [ 0 ] , 6 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Client-Ethernet-Address<S2SV_blank>%s\" , etheraddr_string ( ndo , bp -> bp_chaddr ) ) ) ; } ND_TCHECK2 ( bp -> bp_sname [ 0 ] , 1 ) ; if ( * bp -> bp_sname ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>sname<S2SV_blank>\\\\\"\" ) ) ; if ( fn_printztn ( ndo , bp -> bp_sname , ( u_int ) sizeof bp -> bp_sname , ndo -> ndo_snapend ) ) { ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr + 1 ) ) ; return ; } ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } ND_TCHECK2 ( bp -> bp_file [ 0 ] , 1 ) ; if ( * bp -> bp_file ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>file<S2SV_blank>\\\\\"\" ) ) ; if ( fn_printztn ( ndo , bp -> bp_file , ( u_int ) sizeof bp -> bp_file , ndo -> ndo_snapend ) ) { ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr + 1 ) ) ; return ; } ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } ND_TCHECK ( bp -> bp_vend [ 0 ] ) ; if ( memcmp ( ( const char * ) bp -> bp_vend , vm_rfc1048 , sizeof ( uint32_t ) ) == 0 ) rfc1048_print ( ndo , bp -> bp_vend ) ; else if ( memcmp ( ( const char * ) bp -> bp_vend , vm_cmu , sizeof ( uint32_t ) ) == 0 ) cmu_print ( ndo , bp -> bp_vend ) ; else { uint32_t ul ; ul = EXTRACT_32BITS ( & bp -> bp_vend ) ; if ( ul != 0 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Vendor-#0x%x\" , ul ) ) ; } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ND_TCHECK ( bp -> bp_flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9608\n\n```\nCWE-476 static int dnxhd_find_frame_end ( DNXHDParserContext * dctx , const uint8_t * buf , int buf_size ) { ParseContext * pc = & dctx -> pc ; uint64_t state = pc -> state64 ; int pic_found = pc -> frame_start_found ; int i = 0 ; int interlaced = dctx -> interlaced ; int cur_field = dctx -> cur_field ; if ( ! pic_found ) { for ( i = 0 ; i < buf_size ; i ++ ) { state = ( state << 8 ) | buf [ i ] ; if ( ff_dnxhd_check_header_prefix ( state & 0xffffffffff00LL ) != 0 ) { i ++ ; pic_found = 1 ; interlaced = ( state & 2 ) >> 1 ; cur_field = state & 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; break ; } } } if ( pic_found && ! dctx -> remaining ) { if ( ! buf_size ) return 0 ; for ( ; i < buf_size ; i ++ ) { dctx -> cur_byte ++ ; state = ( state << 8 ) | buf [ i ] ; if ( dctx -> cur_byte == 24 ) { dctx -> h = ( state >> 32 ) & 0xFFFF ; } else if ( dctx -> cur_byte == 26 ) { dctx -> w = ( state >> 32 ) & 0xFFFF ; } else if ( dctx -> cur_byte == 42 ) { int cid = ( state >> 32 ) & 0xFFFFFFFF ; <S2SV_StartBug> if ( cid <= 0 ) <S2SV_EndBug> continue ; <S2SV_StartBug> dctx -> remaining = avpriv_dnxhd_get_frame_size ( cid ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dctx -> remaining <= 0 ) { <S2SV_EndBug> <S2SV_StartBug> dctx -> remaining = dnxhd_get_hr_frame_size ( cid , dctx -> w , dctx -> h ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dctx -> remaining <= 0 ) <S2SV_EndBug> <S2SV_StartBug> return dctx -> remaining ; <S2SV_EndBug> } if ( buf_size - i >= dctx -> remaining && ( ! dctx -> interlaced || dctx -> cur_field ) ) { int remaining = dctx -> remaining ; pc -> frame_start_found = 0 ; pc -> state64 = - 1 ; dctx -> interlaced = interlaced ; dctx -> cur_field = 0 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; return remaining ; } else { dctx -> remaining -= buf_size ; } } } } else if ( pic_found ) { if ( dctx -> remaining > buf_size ) { dctx -> remaining -= buf_size ; } else { int remaining = dctx -> remaining ; pc -> frame_start_found = 0 ; pc -> state64 = - 1 ; dctx -> interlaced = interlaced ; dctx -> cur_field = 0 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; return remaining ; } } pc -> frame_start_found = pic_found ; pc -> state64 = state ; dctx -> interlaced = interlaced ; dctx -> cur_field = cur_field ; return END_NOT_FOUND ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & 0xFFFFFFFF ; int remaining ; <S2SV_ModStart> ) continue ; <S2SV_ModEnd> remaining = avpriv_dnxhd_get_frame_size <S2SV_ModStart> ; if ( <S2SV_ModEnd> remaining <= 0 <S2SV_ModStart> 0 ) { <S2SV_ModEnd> remaining = dnxhd_get_hr_frame_size <S2SV_ModStart> ; if ( <S2SV_ModEnd> remaining <= 0 <S2SV_ModStart> <= 0 ) continue ; } dctx -> remaining = remaining ; <S2SV_ModEnd> if ( buf_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9949\n\n```\nCWE-787 grub_ssize_t grub_fshelp_read_file ( grub_disk_t disk , grub_fshelp_node_t node , void ( * read_hook ) ( grub_disk_addr_t sector , unsigned offset , unsigned length , void * closure ) , void * closure , int flags , grub_off_t pos , grub_size_t len , char * buf , grub_disk_addr_t ( * get_block ) ( grub_fshelp_node_t node , grub_disk_addr_t block ) , grub_off_t filesize , int log2blocksize ) { grub_disk_addr_t i , blockcnt ; int blocksize = 1 << ( log2blocksize + GRUB_DISK_SECTOR_BITS ) ; if ( pos + len > filesize ) len = filesize - pos ; <S2SV_StartBug> blockcnt = ( ( len + pos ) + blocksize - 1 ) >> <S2SV_EndBug> ( log2blocksize + GRUB_DISK_SECTOR_BITS ) ; for ( i = pos >> ( log2blocksize + GRUB_DISK_SECTOR_BITS ) ; i < blockcnt ; i ++ ) { grub_disk_addr_t blknr ; int blockoff = pos & ( blocksize - 1 ) ; int blockend = blocksize ; int skipfirst = 0 ; blknr = get_block ( node , i ) ; if ( grub_errno ) return - 1 ; blknr = blknr << log2blocksize ; if ( i == blockcnt - 1 ) { blockend = ( len + pos ) & ( blocksize - 1 ) ; if ( ! blockend ) blockend = blocksize ; } if ( i == ( pos >> ( log2blocksize + GRUB_DISK_SECTOR_BITS ) ) ) { skipfirst = blockoff ; blockend -= skipfirst ; } if ( blknr ) { disk -> read_hook = read_hook ; disk -> closure = closure ; grub_hack_lastoff = blknr * 512 ; grub_disk_read_ex ( disk , blknr , skipfirst , blockend , buf , flags ) ; disk -> read_hook = 0 ; if ( grub_errno ) return - 1 ; } else if ( buf ) grub_memset ( buf , 0 , blockend ) ; if ( buf ) buf += blocksize - skipfirst ; } return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - pos ; if ( len < 1 || len == 0xffffffff ) { return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3070\n\n```\nCWE-476 int migrate_page_move_mapping ( struct address_space * mapping , struct page * newpage , struct page * page , struct buffer_head * head , enum migrate_mode mode , int extra_count ) { <S2SV_StartBug> int expected_count = 1 + extra_count ; <S2SV_EndBug> void * * pslot ; if ( ! mapping ) { if ( page_count ( page ) != expected_count ) return - EAGAIN ; set_page_memcg ( newpage , page_memcg ( page ) ) ; newpage -> index = page -> index ; newpage -> mapping = page -> mapping ; if ( PageSwapBacked ( page ) ) SetPageSwapBacked ( newpage ) ; return MIGRATEPAGE_SUCCESS ; <S2SV_StartBug> } <S2SV_EndBug> spin_lock_irq ( & mapping -> tree_lock ) ; pslot = radix_tree_lookup_slot ( & mapping -> page_tree , page_index ( page ) ) ; expected_count += 1 + page_has_private ( page ) ; if ( page_count ( page ) != expected_count || radix_tree_deref_slot_protected ( pslot , & mapping -> tree_lock ) != page ) { spin_unlock_irq ( & mapping -> tree_lock ) ; return - EAGAIN ; } if ( ! page_freeze_refs ( page , expected_count ) ) { spin_unlock_irq ( & mapping -> tree_lock ) ; return - EAGAIN ; } if ( mode == MIGRATE_ASYNC && head && ! buffer_migrate_lock_buffers ( head , mode ) ) { page_unfreeze_refs ( page , expected_count ) ; spin_unlock_irq ( & mapping -> tree_lock ) ; return - EAGAIN ; } set_page_memcg ( newpage , page_memcg ( page ) ) ; newpage -> index = page -> index ; newpage -> mapping = page -> mapping ; if ( PageSwapBacked ( page ) ) SetPageSwapBacked ( newpage ) ; get_page ( newpage ) ; if ( PageSwapCache ( page ) ) { SetPageSwapCache ( newpage ) ; set_page_private ( newpage , page_private ( page ) ) ; } <S2SV_StartBug> radix_tree_replace_slot ( pslot , newpage ) ; <S2SV_EndBug> page_unfreeze_refs ( page , expected_count - 1 ) ; <S2SV_StartBug> __dec_zone_page_state ( page , NR_FILE_PAGES ) ; <S2SV_EndBug> <S2SV_StartBug> __inc_zone_page_state ( newpage , NR_FILE_PAGES ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! PageSwapCache ( page ) && PageSwapBacked ( page ) ) { <S2SV_EndBug> __dec_zone_page_state ( page , NR_SHMEM ) ; __inc_zone_page_state ( newpage , NR_SHMEM ) ; } spin_unlock_irq ( & mapping -> tree_lock ) ; return MIGRATEPAGE_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> extra_count ) { struct zone * oldzone , * newzone ; int dirty ; <S2SV_ModStart> MIGRATEPAGE_SUCCESS ; } oldzone = page_zone ( page ) ; newzone = page_zone ( newpage ) ; <S2SV_ModStart> ) ; } dirty = PageDirty ( page ) ; if ( dirty ) { ClearPageDirty ( page ) ; SetPageDirty ( newpage ) ; } <S2SV_ModStart> 1 ) ; spin_unlock ( & mapping -> tree_lock ) ; if ( newzone != oldzone ) { __dec_zone_state ( oldzone <S2SV_ModEnd> , NR_FILE_PAGES ) <S2SV_ModStart> NR_FILE_PAGES ) ; __inc_zone_state ( newzone <S2SV_ModEnd> , NR_FILE_PAGES ) <S2SV_ModStart> ; if ( PageSwapBacked ( page ) && <S2SV_ModStart> ( page ) ) { __dec_zone_state ( oldzone , NR_SHMEM ) ; __inc_zone_state ( newzone , NR_SHMEM ) ; } if ( dirty && mapping_cap_account_dirty ( mapping ) ) { __dec_zone_state ( oldzone , NR_FILE_DIRTY ) ; __inc_zone_state ( newzone , NR_FILE_DIRTY ) ; } } local_irq_enable ( <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5359\n\n```\nCWE-119 static guint32 parse_wbxml_attribute_list_defined ( proto_tree * tree , tvbuff_t * tvb , guint32 offset , guint32 str_tbl , guint8 level , guint8 * codepage_attr , const wbxml_decoding * map ) { guint32 tvb_len = tvb_reported_length ( tvb ) ; <S2SV_StartBug> guint32 off = offset ; <S2SV_EndBug> guint32 len ; guint str_len ; guint32 ent ; guint32 idx ; guint8 peek ; guint8 attr_save_known = 0 ; const char * attr_save_literal = NULL ; DebugLog ( ( \"parse_wbxml_attr_defined<S2SV_blank>(level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>offset<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , <S2SV_StartBug> level , offset ) ) ; <S2SV_EndBug> while ( off < tvb_len ) { peek = tvb_get_guint8 ( tvb , off ) ; DebugLog ( ( \"ATTR:<S2SV_blank>(top<S2SV_blank>of<S2SV_blank>while)<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%3u,<S2SV_blank>peek<S2SV_blank>=<S2SV_blank>0x%02X,<S2SV_blank>\" \"off<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>tvb_len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , level , peek , off , tvb_len ) ) ; if ( ( peek & 0x3F ) < 5 ) switch ( peek ) { case 0x00 : * codepage_attr = tvb_get_guint8 ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 2 , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>-->%3d<S2SV_blank>\" \"|<S2SV_blank>SWITCH_PAGE<S2SV_blank>(Attr<S2SV_blank>code<S2SV_blank>page)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>|\" , * codepage_attr ) ; off += 2 ; break ; case 0x01 : off ++ ; DebugLog ( ( \"ATTR:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , level , off - offset ) ) ; return ( off - offset ) ; case 0x02 : ent = tvb_get_guintvar ( tvb , off + 1 , & len ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>ENTITY<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\'&#%u;\\'\" , level , * codepage_attr , Indent ( level ) , ent ) ; off += 1 + len ; break ; case 0x03 : len = tvb_strsize ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>STR_I<S2SV_blank>(Inline<S2SV_blank>string)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\\\'%s\\\\\\'\" , level , * codepage_attr , Indent ( level ) , tvb_format_text ( tvb , off + 1 , len - 1 ) ) ; off += 1 + len ; break ; case 0x04 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; str_len = tvb_strsize ( tvb , str_tbl + idx ) ; attr_save_known = 0 ; attr_save_literal = tvb_format_text ( tvb , str_tbl + idx , str_len - 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL<S2SV_blank>(Literal<S2SV_blank>Attribute)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>%s<%s<S2SV_blank>/>\" , level , * codepage_attr , Indent ( level ) , attr_save_literal ) ; off += 1 + len ; break ; case 0x40 : case 0x41 : case 0x42 : len = tvb_strsize ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_I_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s(%s:<S2SV_blank>\\\\\\'%s\\\\\\')\" , level , * codepage_attr , peek & 0x0f , Indent ( level ) , map_token ( map -> global , 0 , peek ) , tvb_format_text ( tvb , off + 1 , len - 1 ) ) ; off += 1 + len ; break ; case 0x80 : case 0x81 : case 0x82 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; { char * s ; if ( map -> ext_t [ peek & 0x03 ] ) s = ( map -> ext_t [ peek & 0x03 ] ) ( tvb , idx , str_tbl ) ; else s = wmem_strdup_printf ( wmem_packet_scope ( ) , \"EXT_T_%1x<S2SV_blank>(%s)\" , peek & 0x03 , map_token ( map -> global , 0 , peek ) ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_T_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s%s)\" , level , * codepage_attr , peek & 0x0f , Indent ( level ) , s ) ; } off += 1 + len ; break ; case 0x83 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; str_len = tvb_strsize ( tvb , str_tbl + idx ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>STR_T<S2SV_blank>(Tableref<S2SV_blank>string)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\\\'%s\\\\\\'\" , level , * codepage_attr , Indent ( level ) , tvb_format_text ( tvb , str_tbl + idx , str_len - 1 ) ) ; off += 1 + len ; break ; case 0xC0 : case 0xC1 : case 0xC2 : proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s(%s)\" , level , * codepage_attr , peek & 0x0f , Indent ( level ) , map_token ( map -> global , 0 , peek ) ) ; off ++ ; break ; case 0xC3 : if ( tvb_get_guint8 ( tvb , 0 ) ) { char * str ; if ( attr_save_known ) { if ( map -> opaque_binary_attr ) { str = map -> opaque_binary_attr ( tvb , off + 1 , attr_save_known , * codepage_attr , & len ) ; } else { str = default_opaque_binary_attr ( tvb , off + 1 , attr_save_known , * codepage_attr , & len ) ; } } else { if ( map -> opaque_literal_tag ) { str = map -> opaque_literal_attr ( tvb , off + 1 , attr_save_literal , * codepage_attr , & len ) ; } else { str = default_opaque_literal_attr ( tvb , off + 1 , attr_save_literal , * codepage_attr , & len ) ; } } proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>OPAQUE<S2SV_blank>(Opaque<S2SV_blank>data)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s%s\" , level , * codepage_attr , Indent ( level ) , str ) ; off += 1 + len ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>RESERVED_2<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Invalid<S2SV_blank>Token!)<S2SV_blank>\" \"|<S2SV_blank>WBXML<S2SV_blank>1.0<S2SV_blank>parsing<S2SV_blank>stops<S2SV_blank>here.\" , level , * codepage_attr ) ; off = tvb_len ; DebugLog ( ( \"ATTR:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , level , off - offset ) ) ; return ( off - offset ) ; } break ; default : proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%-10s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Invalid<S2SV_blank>Token!)<S2SV_blank>\" \"|<S2SV_blank>WBXML<S2SV_blank>parsing<S2SV_blank>stops<S2SV_blank>here.\" , level , * codepage_attr , val_to_str_ext ( peek , & vals_wbxml1x_global_tokens_ext , \"(unknown<S2SV_blank>0x%x)\" ) ) ; off = tvb_len ; break ; } else { if ( peek & 0x80 ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>attrValue<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s%s\" , level , * codepage_attr , peek & 0x7f , Indent ( level ) , map_token ( map -> attrValue , * codepage_attr , peek ) ) ; off ++ ; } else { attr_save_known = peek & 0x7f ; proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>attrStart<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>%s%s\" , level , * codepage_attr , attr_save_known , Indent ( level ) , map_token ( map -> attrStart , * codepage_attr , peek ) ) ; off ++ ; } } <S2SV_StartBug> } <S2SV_EndBug> DebugLog ( ( \"ATTR:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(end<S2SV_blank>of<S2SV_blank>function<S2SV_blank>body)\\\\n\" , level , off - offset ) ) ; return ( off - offset ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> off = offset , last_off <S2SV_ModStart> offset ) ) ; last_off = off <S2SV_ModStart> ; } } if ( off < last_off ) { THROW ( ReportedBoundsError ) ; } last_off = off ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_encode_frame ( VP9_COMP * cpi ) { VP9_COMMON * const cm = & cpi -> common ; if ( ! frame_is_intra_only ( cm ) ) { if ( ( cm -> ref_frame_sign_bias [ ALTREF_FRAME ] == cm -> ref_frame_sign_bias [ GOLDEN_FRAME ] ) || ( cm -> ref_frame_sign_bias [ ALTREF_FRAME ] == cm -> ref_frame_sign_bias [ LAST_FRAME ] ) ) { <S2SV_StartBug> cm -> allow_comp_inter_inter = 0 ; <S2SV_EndBug> } else { <S2SV_StartBug> cm -> allow_comp_inter_inter = 1 ; <S2SV_EndBug> cm -> comp_fixed_ref = ALTREF_FRAME ; cm -> comp_var_ref [ 0 ] = LAST_FRAME ; cm -> comp_var_ref [ 1 ] = GOLDEN_FRAME ; } } if ( cpi -> sf . frame_parameter_update ) { <S2SV_StartBug> int i ; <S2SV_EndBug> const MV_REFERENCE_FRAME frame_type = get_frame_type ( cpi ) ; <S2SV_StartBug> const int64_t * mode_thresh = cpi -> rd_prediction_type_threshes [ frame_type ] ; <S2SV_EndBug> <S2SV_StartBug> const int64_t * filter_thresh = cpi -> rd_filter_threshes [ frame_type ] ; <S2SV_EndBug> <S2SV_StartBug> if ( frame_type == ALTREF_FRAME || ! cm -> allow_comp_inter_inter ) <S2SV_EndBug> cm -> reference_mode = SINGLE_REFERENCE ; <S2SV_StartBug> else if ( mode_thresh [ COMPOUND_REFERENCE ] > mode_thresh [ SINGLE_REFERENCE ] && <S2SV_EndBug> <S2SV_StartBug> mode_thresh [ COMPOUND_REFERENCE ] > <S2SV_EndBug> <S2SV_StartBug> mode_thresh [ REFERENCE_MODE_SELECT ] && <S2SV_EndBug> check_dual_ref_flags ( cpi ) && cpi -> static_mb_pct == 100 ) cm -> reference_mode = COMPOUND_REFERENCE ; <S2SV_StartBug> else if ( mode_thresh [ SINGLE_REFERENCE ] > mode_thresh [ REFERENCE_MODE_SELECT ] ) <S2SV_EndBug> cm -> reference_mode = SINGLE_REFERENCE ; else cm -> reference_mode = REFERENCE_MODE_SELECT ; <S2SV_StartBug> if ( cm -> interp_filter == SWITCHABLE ) { <S2SV_EndBug> if ( frame_type != ALTREF_FRAME && filter_thresh [ EIGHTTAP_SMOOTH ] > filter_thresh [ EIGHTTAP ] && filter_thresh [ EIGHTTAP_SMOOTH ] > filter_thresh [ EIGHTTAP_SHARP ] && filter_thresh [ EIGHTTAP_SMOOTH ] > filter_thresh [ SWITCHABLE - 1 ] ) { <S2SV_StartBug> cm -> interp_filter = EIGHTTAP_SMOOTH ; <S2SV_EndBug> } else if ( filter_thresh [ EIGHTTAP_SHARP ] > filter_thresh [ EIGHTTAP ] && filter_thresh [ EIGHTTAP_SHARP ] > filter_thresh [ SWITCHABLE - 1 ] ) { cm -> interp_filter = EIGHTTAP_SHARP ; } else if ( filter_thresh [ EIGHTTAP ] > filter_thresh [ SWITCHABLE - 1 ] ) { cm -> interp_filter = EIGHTTAP ; } } encode_frame_internal ( cpi ) ; <S2SV_StartBug> for ( i = 0 ; i < REFERENCE_MODES ; ++ i ) { <S2SV_EndBug> <S2SV_StartBug> const int diff = ( int ) ( cpi -> rd_comp_pred_diff [ i ] / cm -> MBs ) ; <S2SV_EndBug> cpi -> rd_prediction_type_threshes [ frame_type ] [ i ] += diff ; cpi -> rd_prediction_type_threshes [ frame_type ] [ i ] >>= 1 ; } <S2SV_StartBug> for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) { <S2SV_EndBug> <S2SV_StartBug> const int64_t diff = cpi -> rd_filter_diff [ i ] / cm -> MBs ; <S2SV_EndBug> cpi -> rd_filter_threshes [ frame_type ] [ i ] = ( cpi -> rd_filter_threshes [ frame_type ] [ i ] + diff ) / 2 ; <S2SV_StartBug> } <S2SV_EndBug> for ( i = 0 ; i < TX_MODES ; ++ i ) { int64_t pd = cpi -> rd_tx_select_diff [ i ] ; int diff ; if ( i == TX_MODE_SELECT ) pd -= RDCOST ( cpi -> mb . rdmult , cpi -> mb . rddiv , 2048 * ( TX_SIZES - 1 ) , 0 ) ; diff = ( int ) ( pd / cm -> MBs ) ; cpi -> rd_tx_select_threshes [ frame_type ] [ i ] += diff ; cpi -> rd_tx_select_threshes [ frame_type ] [ i ] /= 2 ; } if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) { int single_count_zero = 0 ; int comp_count_zero = 0 ; for ( i = 0 ; i < COMP_INTER_CONTEXTS ; i ++ ) { <S2SV_StartBug> single_count_zero += cm -> counts . comp_inter [ i ] [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> comp_count_zero += cm -> counts . comp_inter [ i ] [ 1 ] ; <S2SV_EndBug> } if ( comp_count_zero == 0 ) { cm -> reference_mode = SINGLE_REFERENCE ; <S2SV_StartBug> vp9_zero ( cm -> counts . comp_inter ) ; <S2SV_EndBug> } else if ( single_count_zero == 0 ) { cm -> reference_mode = COMPOUND_REFERENCE ; <S2SV_StartBug> vp9_zero ( cm -> counts . comp_inter ) ; <S2SV_EndBug> } } if ( cm -> tx_mode == TX_MODE_SELECT ) { int count4x4 = 0 ; int count8x8_lp = 0 , count8x8_8x8p = 0 ; int count16x16_16x16p = 0 , count16x16_lp = 0 ; int count32x32 = 0 ; for ( i = 0 ; i < TX_SIZE_CONTEXTS ; ++ i ) { <S2SV_StartBug> count4x4 += cm -> counts . tx . p32x32 [ i ] [ TX_4X4 ] ; <S2SV_EndBug> <S2SV_StartBug> count4x4 += cm -> counts . tx . p16x16 [ i ] [ TX_4X4 ] ; <S2SV_EndBug> <S2SV_StartBug> count4x4 += cm -> counts . tx . p8x8 [ i ] [ TX_4X4 ] ; <S2SV_EndBug> <S2SV_StartBug> count8x8_lp += cm -> counts . tx . p32x32 [ i ] [ TX_8X8 ] ; <S2SV_EndBug> <S2SV_StartBug> count8x8_lp += cm -> counts . tx . p16x16 [ i ] [ TX_8X8 ] ; <S2SV_EndBug> <S2SV_StartBug> count8x8_8x8p += cm -> counts . tx . p8x8 [ i ] [ TX_8X8 ] ; <S2SV_EndBug> <S2SV_StartBug> count16x16_16x16p += cm -> counts . tx . p16x16 [ i ] [ TX_16X16 ] ; <S2SV_EndBug> <S2SV_StartBug> count16x16_lp += cm -> counts . tx . p32x32 [ i ] [ TX_16X16 ] ; <S2SV_EndBug> <S2SV_StartBug> count32x32 += cm -> counts . tx . p32x32 [ i ] [ TX_32X32 ] ; <S2SV_EndBug> } if ( count4x4 == 0 && count16x16_lp == 0 && count16x16_16x16p == 0 && count32x32 == 0 ) { cm -> tx_mode = ALLOW_8X8 ; <S2SV_StartBug> reset_skip_txfm_size ( cm , TX_8X8 ) ; <S2SV_EndBug> } else if ( count8x8_8x8p == 0 && count16x16_16x16p == 0 && count8x8_lp == 0 && count16x16_lp == 0 && count32x32 == 0 ) { cm -> tx_mode = ONLY_4X4 ; <S2SV_StartBug> reset_skip_txfm_size ( cm , TX_4X4 ) ; <S2SV_EndBug> } else if ( count8x8_lp == 0 && count16x16_lp == 0 && count4x4 == 0 ) { cm -> tx_mode = ALLOW_32X32 ; } else if ( count32x32 == 0 && count8x8_lp == 0 && count4x4 == 0 ) { cm -> tx_mode = ALLOW_16X16 ; <S2SV_StartBug> reset_skip_txfm_size ( cm , TX_16X16 ) ; <S2SV_EndBug> } } } else { cm -> reference_mode = SINGLE_REFERENCE ; <S2SV_StartBug> cm -> interp_filter = SWITCHABLE ; <S2SV_EndBug> encode_frame_internal ( cpi ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { cpi <S2SV_ModEnd> -> allow_comp_inter_inter = <S2SV_ModStart> } else { cpi <S2SV_ModEnd> -> allow_comp_inter_inter = <S2SV_ModStart> { int i ; RD_OPT * const rd_opt = & cpi -> rd ; FRAME_COUNTS * counts = cpi -> td . counts ; RD_COUNTS * const rdc = & cpi -> td . rd_counts <S2SV_ModStart> cpi ) ; int64_t * const mode_thrs = rd_opt -> prediction_type_threshes <S2SV_ModEnd> [ frame_type ] <S2SV_ModStart> frame_type ] ; int64_t * const filter_thrs = rd_opt -> filter_threshes <S2SV_ModEnd> [ frame_type ] <S2SV_ModStart> frame_type ] ; const int is_alt_ref = <S2SV_ModEnd> frame_type == ALTREF_FRAME <S2SV_ModStart> frame_type == ALTREF_FRAME ; if ( is_alt_ref || ! cpi <S2SV_ModEnd> -> allow_comp_inter_inter ) <S2SV_ModStart> else if ( mode_thrs <S2SV_ModEnd> [ COMPOUND_REFERENCE ] <S2SV_ModStart> COMPOUND_REFERENCE ] > mode_thrs <S2SV_ModEnd> [ SINGLE_REFERENCE ] <S2SV_ModStart> SINGLE_REFERENCE ] && mode_thrs <S2SV_ModEnd> [ COMPOUND_REFERENCE ] <S2SV_ModStart> COMPOUND_REFERENCE ] > mode_thrs <S2SV_ModEnd> [ REFERENCE_MODE_SELECT ] <S2SV_ModStart> else if ( mode_thrs <S2SV_ModEnd> [ SINGLE_REFERENCE ] <S2SV_ModStart> SINGLE_REFERENCE ] > mode_thrs <S2SV_ModEnd> [ REFERENCE_MODE_SELECT ] <S2SV_ModStart> == SWITCHABLE ) <S2SV_ModEnd> cm -> interp_filter <S2SV_ModStart> -> interp_filter = get_interp_filter ( filter_thrs , is_alt_ref ) ; <S2SV_ModEnd> encode_frame_internal ( cpi <S2SV_ModStart> ++ i ) mode_thrs [ i ] = ( mode_thrs [ i ] + rdc -> comp_pred_diff <S2SV_ModEnd> [ i ] <S2SV_ModStart> -> MBs ) / 2 ; <S2SV_ModEnd> for ( i <S2SV_ModStart> < SWITCHABLE_FILTER_CONTEXTS ; ++ i ) filter_thrs [ i ] = ( filter_thrs [ i ] + rdc -> filter_diff <S2SV_ModEnd> [ i ] <S2SV_ModStart> cm -> MBs <S2SV_ModEnd> ) / 2 <S2SV_ModStart> / 2 ; <S2SV_ModEnd> if ( cm <S2SV_ModStart> { single_count_zero += counts -> <S2SV_ModEnd> comp_inter [ i <S2SV_ModStart> ; comp_count_zero += counts -> <S2SV_ModEnd> comp_inter [ i <S2SV_ModStart> ; vp9_zero ( counts -> <S2SV_ModEnd> comp_inter ) ; <S2SV_ModStart> ; vp9_zero ( counts -> <S2SV_ModEnd> comp_inter ) ; <S2SV_ModStart> { count4x4 += counts -> <S2SV_ModEnd> tx . p32x32 <S2SV_ModStart> ; count4x4 += counts -> <S2SV_ModEnd> tx . p16x16 <S2SV_ModStart> ; count4x4 += counts -> <S2SV_ModEnd> tx . p8x8 <S2SV_ModStart> ; count8x8_lp += counts -> <S2SV_ModEnd> tx . p32x32 <S2SV_ModStart> ; count8x8_lp += counts -> <S2SV_ModEnd> tx . p16x16 <S2SV_ModStart> ; count8x8_8x8p += counts -> <S2SV_ModEnd> tx . p8x8 <S2SV_ModStart> ; count16x16_16x16p += counts -> <S2SV_ModEnd> tx . p16x16 <S2SV_ModStart> ; count16x16_lp += counts -> <S2SV_ModEnd> tx . p32x32 <S2SV_ModStart> ; count32x32 += counts -> <S2SV_ModEnd> tx . p32x32 <S2SV_ModStart> = ALLOW_8X8 ; reset_skip_tx_size <S2SV_ModEnd> ( cm , <S2SV_ModStart> = ONLY_4X4 ; reset_skip_tx_size <S2SV_ModEnd> ( cm , <S2SV_ModStart> = ALLOW_16X16 ; reset_skip_tx_size <S2SV_ModEnd> ( cm , <S2SV_ModStart> = SINGLE_REFERENCE ; <S2SV_ModEnd> encode_frame_internal ( cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20636\n\n```\nCWE-787 int input_set_keycode ( struct input_dev * dev , const struct input_keymap_entry * ke ) { unsigned long flags ; unsigned int old_keycode ; int retval ; if ( ke -> keycode > KEY_MAX ) return - EINVAL ; spin_lock_irqsave ( & dev -> event_lock , flags ) ; retval = dev -> setkeycode ( dev , ke , & old_keycode ) ; if ( retval ) goto out ; __clear_bit ( KEY_RESERVED , dev -> keybit ) ; <S2SV_StartBug> if ( test_bit ( EV_KEY , dev -> evbit ) && <S2SV_EndBug> ! is_event_supported ( old_keycode , dev -> keybit , KEY_MAX ) && __test_and_clear_bit ( old_keycode , dev -> key ) ) { struct input_value vals [ ] = { { EV_KEY , old_keycode , 0 } , input_value_sync } ; input_pass_values ( dev , vals , ARRAY_SIZE ( vals ) ) ; } out : spin_unlock_irqrestore ( & dev -> event_lock , flags ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> keybit ) ; if ( old_keycode > KEY_MAX ) { dev_warn ( dev -> dev . parent ? : & dev -> dev , \"%s:<S2SV_blank>got<S2SV_blank>too<S2SV_blank>big<S2SV_blank>old<S2SV_blank>keycode<S2SV_blank>%#x\\\\n\" , __func__ , old_keycode ) ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0791\n\n```\nCWE-189 BOOL license_read_scope_list ( wStream * s , SCOPE_LIST * scopeList ) { UINT32 i ; UINT32 scopeCount ; if ( Stream_GetRemainingLength ( s ) < 4 ) return FALSE ; <S2SV_StartBug> Stream_Read_UINT32 ( s , scopeCount ) ; <S2SV_EndBug> scopeList -> count = scopeCount ; scopeList -> array = ( LICENSE_BLOB * ) malloc ( sizeof ( LICENSE_BLOB ) * scopeCount ) ; for ( i = 0 ; i < scopeCount ; i ++ ) { scopeList -> array [ i ] . type = BB_SCOPE_BLOB ; if ( ! license_read_binary_blob ( s , & scopeList -> array [ i ] ) ) return FALSE ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , scopeCount ) ; if ( Stream_GetRemainingLength ( s ) / sizeof ( LICENSE_BLOB ) < scopeCount ) return FALSE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0038\n\n```\nCWE-190 STATIC struct posix_acl * xfs_acl_from_disk ( struct xfs_acl * aclp ) { struct posix_acl_entry * acl_e ; struct posix_acl * acl ; struct xfs_acl_entry * ace ; int count , i ; <S2SV_StartBug> count = be32_to_cpu ( aclp -> acl_cnt ) ; <S2SV_EndBug> acl = posix_acl_alloc ( count , GFP_KERNEL ) ; if ( ! acl ) return ERR_PTR ( - ENOMEM ) ; for ( i = 0 ; i < count ; i ++ ) { acl_e = & acl -> a_entries [ i ] ; ace = & aclp -> acl_entry [ i ] ; acl_e -> e_tag = be32_to_cpu ( ace -> ae_tag ) ; acl_e -> e_perm = be16_to_cpu ( ace -> ae_perm ) ; switch ( acl_e -> e_tag ) { case ACL_USER : case ACL_GROUP : acl_e -> e_id = be32_to_cpu ( ace -> ae_id ) ; break ; case ACL_USER_OBJ : case ACL_GROUP_OBJ : case ACL_MASK : case ACL_OTHER : acl_e -> e_id = ACL_UNDEFINED_ID ; break ; default : goto fail ; } } return acl ; fail : posix_acl_release ( acl ) ; return ERR_PTR ( - EINVAL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> aclp -> acl_cnt ) ; if ( count > XFS_ACL_MAX_ENTRIES ) return ERR_PTR ( - EFSCORRUPTED\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18270\n\n```\nCWE-000 struct key * key_alloc ( struct key_type * type , const char * desc , kuid_t uid , kgid_t gid , const struct cred * cred , key_perm_t perm , unsigned long flags , struct key_restriction * restrict_link ) { struct key_user * user = NULL ; struct key * key ; size_t desclen , quotalen ; int ret ; key = ERR_PTR ( - EINVAL ) ; if ( ! desc || ! * desc ) goto error ; if ( type -> vet_description ) { ret = type -> vet_description ( desc ) ; if ( ret < 0 ) { key = ERR_PTR ( ret ) ; goto error ; } } desclen = strlen ( desc ) ; quotalen = desclen + 1 + type -> def_datalen ; user = key_user_lookup ( uid ) ; if ( ! user ) goto no_memory_1 ; if ( ! ( flags & KEY_ALLOC_NOT_IN_QUOTA ) ) { unsigned maxkeys = uid_eq ( uid , GLOBAL_ROOT_UID ) ? key_quota_root_maxkeys : key_quota_maxkeys ; unsigned maxbytes = uid_eq ( uid , GLOBAL_ROOT_UID ) ? key_quota_root_maxbytes : key_quota_maxbytes ; spin_lock ( & user -> lock ) ; if ( ! ( flags & KEY_ALLOC_QUOTA_OVERRUN ) ) { if ( user -> qnkeys + 1 >= maxkeys || user -> qnbytes + quotalen >= maxbytes || user -> qnbytes + quotalen < user -> qnbytes ) goto no_quota ; } user -> qnkeys ++ ; user -> qnbytes += quotalen ; spin_unlock ( & user -> lock ) ; } key = kmem_cache_zalloc ( key_jar , GFP_KERNEL ) ; if ( ! key ) goto no_memory_2 ; key -> index_key . desc_len = desclen ; key -> index_key . description = kmemdup ( desc , desclen + 1 , GFP_KERNEL ) ; if ( ! key -> index_key . description ) goto no_memory_3 ; refcount_set ( & key -> usage , 1 ) ; init_rwsem ( & key -> sem ) ; lockdep_set_class ( & key -> sem , & type -> lock_class ) ; key -> index_key . type = type ; key -> user = user ; key -> quotalen = quotalen ; key -> datalen = type -> def_datalen ; key -> uid = uid ; key -> gid = gid ; key -> perm = perm ; key -> restrict_link = restrict_link ; if ( ! ( flags & KEY_ALLOC_NOT_IN_QUOTA ) ) key -> flags |= 1 << KEY_FLAG_IN_QUOTA ; if ( flags & KEY_ALLOC_BUILT_IN ) key -> flags |= 1 << KEY_FLAG_BUILTIN ; <S2SV_StartBug> # ifdef KEY_DEBUGGING <S2SV_EndBug> key -> magic = KEY_DEBUG_MAGIC ; # endif ret = security_key_alloc ( key , cred , flags ) ; if ( ret < 0 ) goto security_error ; atomic_inc ( & user -> nkeys ) ; key_alloc_serial ( key ) ; error : return key ; security_error : kfree ( key -> description ) ; kmem_cache_free ( key_jar , key ) ; if ( ! ( flags & KEY_ALLOC_NOT_IN_QUOTA ) ) { spin_lock ( & user -> lock ) ; user -> qnkeys -- ; user -> qnbytes -= quotalen ; spin_unlock ( & user -> lock ) ; } key_user_put ( user ) ; key = ERR_PTR ( ret ) ; goto error ; no_memory_3 : kmem_cache_free ( key_jar , key ) ; no_memory_2 : if ( ! ( flags & KEY_ALLOC_NOT_IN_QUOTA ) ) { spin_lock ( & user -> lock ) ; user -> qnkeys -- ; user -> qnbytes -= quotalen ; spin_unlock ( & user -> lock ) ; } key_user_put ( user ) ; no_memory_1 : key = ERR_PTR ( - ENOMEM ) ; goto error ; no_quota : spin_unlock ( & user -> lock ) ; key_user_put ( user ) ; key = ERR_PTR ( - EDQUOT ) ; goto error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> << KEY_FLAG_BUILTIN ; if ( flags & KEY_ALLOC_UID_KEYRING ) key -> flags |= 1 << KEY_FLAG_UID_KEYRING ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 int tls1_mac ( SSL * ssl , SSL3_RECORD * rec , unsigned char * md , int send ) { unsigned char * seq ; EVP_MD_CTX * hash ; size_t md_size ; int i ; EVP_MD_CTX * hmac = NULL , * mac_ctx ; unsigned char header [ 13 ] ; int stream_mac = ( send ? ( ssl -> mac_flags & SSL_MAC_FLAG_WRITE_MAC_STREAM ) : ( ssl -> mac_flags & SSL_MAC_FLAG_READ_MAC_STREAM ) ) ; int t ; if ( send ) { seq = RECORD_LAYER_get_write_sequence ( & ssl -> rlayer ) ; hash = ssl -> write_hash ; } else { seq = RECORD_LAYER_get_read_sequence ( & ssl -> rlayer ) ; hash = ssl -> read_hash ; } t = EVP_MD_CTX_size ( hash ) ; OPENSSL_assert ( t >= 0 ) ; md_size = t ; if ( stream_mac ) { mac_ctx = hash ; } else { hmac = EVP_MD_CTX_new ( ) ; if ( hmac == NULL || ! EVP_MD_CTX_copy ( hmac , hash ) ) return - 1 ; mac_ctx = hmac ; } if ( SSL_IS_DTLS ( ssl ) ) { unsigned char dtlsseq [ 8 ] , * p = dtlsseq ; s2n ( send ? DTLS_RECORD_LAYER_get_w_epoch ( & ssl -> rlayer ) : DTLS_RECORD_LAYER_get_r_epoch ( & ssl -> rlayer ) , p ) ; memcpy ( p , & seq [ 2 ] , 6 ) ; memcpy ( header , dtlsseq , 8 ) ; } else memcpy ( header , seq , 8 ) ; header [ 8 ] = rec -> type ; header [ 9 ] = ( unsigned char ) ( ssl -> version >> 8 ) ; header [ 10 ] = ( unsigned char ) ( ssl -> version ) ; header [ 11 ] = ( rec -> length ) >> 8 ; header [ 12 ] = ( rec -> length ) & 0xff ; <S2SV_StartBug> if ( ! send && ! SSL_USE_ETM ( ssl ) && <S2SV_EndBug> EVP_CIPHER_CTX_mode ( ssl -> enc_read_ctx ) == EVP_CIPH_CBC_MODE && ssl3_cbc_record_digest_supported ( mac_ctx ) ) { if ( ssl3_cbc_digest_record ( mac_ctx , md , & md_size , header , rec -> input , rec -> length + md_size , rec -> orig_len , ssl -> s3 -> read_mac_secret , ssl -> s3 -> read_mac_secret_size , 0 ) <= 0 ) { EVP_MD_CTX_free ( hmac ) ; return - 1 ; } } else { if ( EVP_DigestSignUpdate ( mac_ctx , header , sizeof ( header ) ) <= 0 || EVP_DigestSignUpdate ( mac_ctx , rec -> input , rec -> length ) <= 0 || EVP_DigestSignFinal ( mac_ctx , md , & md_size ) <= 0 ) { EVP_MD_CTX_free ( hmac ) ; return - 1 ; } <S2SV_StartBug> if ( ! send && ! SSL_USE_ETM ( ssl ) && FIPS_mode ( ) ) <S2SV_EndBug> if ( ! tls_fips_digest_extra ( ssl -> enc_read_ctx , mac_ctx , rec -> input , rec -> length , rec -> orig_len ) ) { EVP_MD_CTX_free ( hmac ) ; return - 1 ; } } EVP_MD_CTX_free ( hmac ) ; # ifdef SSL_DEBUG fprintf ( stderr , \"seq=\" ) ; { int z ; for ( z = 0 ; z < 8 ; z ++ ) fprintf ( stderr , \"%02X<S2SV_blank>\" , seq [ z ] ) ; fprintf ( stderr , \"\\\\n\" ) ; } fprintf ( stderr , \"rec=\" ) ; { unsigned int z ; for ( z = 0 ; z < rec -> length ; z ++ ) fprintf ( stderr , \"%02X<S2SV_blank>\" , rec -> data [ z ] ) ; fprintf ( stderr , \"\\\\n\" ) ; } # endif if ( ! SSL_IS_DTLS ( ssl ) ) { for ( i = 7 ; i >= 0 ; i -- ) { ++ seq [ i ] ; if ( seq [ i ] != 0 ) break ; } } # ifdef SSL_DEBUG { unsigned int z ; for ( z = 0 ; z < md_size ; z ++ ) fprintf ( stderr , \"%02X<S2SV_blank>\" , md [ z ] ) ; fprintf ( stderr , \"\\\\n\" ) ; } # endif return ( md_size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> send && ! SSL_READ_ETM <S2SV_ModEnd> ( ssl ) <S2SV_ModStart> send && ! SSL_READ_ETM <S2SV_ModEnd> ( ssl )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 int do_remount_sb ( struct super_block * sb , int flags , void * data , int force ) { int retval ; int remount_ro ; if ( sb -> s_writers . frozen != SB_UNFROZEN ) return - EBUSY ; # ifdef CONFIG_BLOCK if ( ! ( flags & MS_RDONLY ) && bdev_read_only ( sb -> s_bdev ) ) return - EACCES ; # endif if ( flags & MS_RDONLY ) acct_auto_close ( sb ) ; shrink_dcache_sb ( sb ) ; sync_filesystem ( sb ) ; remount_ro = ( flags & MS_RDONLY ) && ! ( sb -> s_flags & MS_RDONLY ) ; if ( remount_ro ) { if ( force ) { <S2SV_StartBug> mark_files_ro ( sb ) ; <S2SV_EndBug> } else { retval = sb_prepare_remount_readonly ( sb ) ; if ( retval ) return retval ; } } if ( sb -> s_op -> remount_fs ) { retval = sb -> s_op -> remount_fs ( sb , & flags , data ) ; if ( retval ) { if ( ! force ) goto cancel_readonly ; WARN ( 1 , \"forced<S2SV_blank>remount<S2SV_blank>of<S2SV_blank>a<S2SV_blank>%s<S2SV_blank>fs<S2SV_blank>returned<S2SV_blank>%i\\\\n\" , sb -> s_type -> name , retval ) ; } } sb -> s_flags = ( sb -> s_flags & ~ MS_RMT_MASK ) | ( flags & MS_RMT_MASK ) ; smp_wmb ( ) ; sb -> s_readonly_remount = 0 ; if ( remount_ro && sb -> s_bdev ) invalidate_bdev ( sb -> s_bdev ) ; return 0 ; cancel_readonly : sb -> s_readonly_remount = 0 ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> force ) { sb -> s_readonly_remount = 1 ; smp_wmb ( <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9888\n\n```\nCWE-476 static GsfInfileTar * tar_directory_for_file ( GsfInfileTar * dir , const char * name , gboolean last ) { const char * s = name ; while ( 1 ) { const char * s0 = s ; char * dirname ; while ( 1 ) { if ( * s == 0 ) { if ( last && s != s0 ) break ; else return dir ; } if ( * s == '/' ) break ; s ++ ; } dirname = g_strndup ( s0 , s - s0 ) ; while ( * s == '/' ) s ++ ; if ( strcmp ( dirname , \".\" ) != 0 ) { GsfInput * subdir = gsf_infile_child_by_name ( GSF_INFILE ( dir ) , dirname ) ; if ( subdir ) { <S2SV_StartBug> g_object_unref ( subdir ) ; <S2SV_EndBug> <S2SV_StartBug> dir = GSF_INFILE_TAR ( subdir ) ; <S2SV_EndBug> } else dir = tar_create_dir ( dir , dirname ) ; } g_free ( dirname ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> subdir ) { dir = GSF_IS_INFILE_TAR ( subdir ) ? GSF_INFILE_TAR ( subdir ) : dir ; <S2SV_ModStart> subdir ) ; <S2SV_ModEnd> } else dir\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12210\n\n```\nCWE-000 static void parse_cfg ( int flags , int argc , const char * * argv , cfg_t * cfg ) { <S2SV_StartBug> int i ; <S2SV_EndBug> memset ( cfg , 0 , sizeof ( cfg_t ) ) ; cfg -> debug_file = stderr ; for ( i = 0 ; i < argc ; i ++ ) { if ( strncmp ( argv [ i ] , \"max_devices=\" , 12 ) == 0 ) sscanf ( argv [ i ] , \"max_devices=%u\" , & cfg -> max_devs ) ; if ( strcmp ( argv [ i ] , \"manual\" ) == 0 ) cfg -> manual = 1 ; if ( strcmp ( argv [ i ] , \"debug\" ) == 0 ) cfg -> debug = 1 ; if ( strcmp ( argv [ i ] , \"nouserok\" ) == 0 ) cfg -> nouserok = 1 ; if ( strcmp ( argv [ i ] , \"openasuser\" ) == 0 ) cfg -> openasuser = 1 ; if ( strcmp ( argv [ i ] , \"alwaysok\" ) == 0 ) cfg -> alwaysok = 1 ; if ( strcmp ( argv [ i ] , \"interactive\" ) == 0 ) cfg -> interactive = 1 ; if ( strcmp ( argv [ i ] , \"cue\" ) == 0 ) cfg -> cue = 1 ; if ( strcmp ( argv [ i ] , \"nodetect\" ) == 0 ) cfg -> nodetect = 1 ; if ( strncmp ( argv [ i ] , \"authfile=\" , 9 ) == 0 ) cfg -> auth_file = argv [ i ] + 9 ; if ( strncmp ( argv [ i ] , \"authpending_file=\" , 17 ) == 0 ) cfg -> authpending_file = argv [ i ] + 17 ; if ( strncmp ( argv [ i ] , \"origin=\" , 7 ) == 0 ) cfg -> origin = argv [ i ] + 7 ; if ( strncmp ( argv [ i ] , \"appid=\" , 6 ) == 0 ) cfg -> appid = argv [ i ] + 6 ; if ( strncmp ( argv [ i ] , \"prompt=\" , 7 ) == 0 ) cfg -> prompt = argv [ i ] + 7 ; if ( strncmp ( argv [ i ] , \"debug_file=\" , 11 ) == 0 ) { const char * filename = argv [ i ] + 11 ; if ( strncmp ( filename , \"stdout\" , 6 ) == 0 ) { cfg -> debug_file = stdout ; } else if ( strncmp ( filename , \"stderr\" , 6 ) == 0 ) { cfg -> debug_file = stderr ; } else if ( strncmp ( filename , \"syslog\" , 6 ) == 0 ) { cfg -> debug_file = ( FILE * ) - 1 ; } else { <S2SV_StartBug> struct stat st ; <S2SV_EndBug> FILE * file ; <S2SV_StartBug> if ( lstat ( filename , & st ) == 0 ) { <S2SV_EndBug> if ( S_ISREG ( st . st_mode ) ) { <S2SV_StartBug> file = fopen ( filename , \"a\" ) ; <S2SV_EndBug> if ( file != NULL ) { cfg -> debug_file = file ; <S2SV_StartBug> } <S2SV_EndBug> } } } } } if ( cfg -> debug ) { D ( cfg -> debug_file , \"called.\" ) ; D ( cfg -> debug_file , \"flags<S2SV_blank>%d<S2SV_blank>argc<S2SV_blank>%d\" , flags , argc ) ; for ( i = 0 ; i < argc ; i ++ ) { D ( cfg -> debug_file , \"argv[%d]=%s\" , i , argv [ i ] ) ; } D ( cfg -> debug_file , \"max_devices=%d\" , cfg -> max_devs ) ; D ( cfg -> debug_file , \"debug=%d\" , cfg -> debug ) ; D ( cfg -> debug_file , \"interactive=%d\" , cfg -> interactive ) ; D ( cfg -> debug_file , \"cue=%d\" , cfg -> cue ) ; D ( cfg -> debug_file , \"nodetect=%d\" , cfg -> nodetect ) ; D ( cfg -> debug_file , \"manual=%d\" , cfg -> manual ) ; D ( cfg -> debug_file , \"nouserok=%d\" , cfg -> nouserok ) ; D ( cfg -> debug_file , \"openasuser=%d\" , cfg -> openasuser ) ; D ( cfg -> debug_file , \"alwaysok=%d\" , cfg -> alwaysok ) ; D ( cfg -> debug_file , \"authfile=%s\" , cfg -> auth_file ? cfg -> auth_file : \"(null)\" ) ; D ( cfg -> debug_file , \"authpending_file=%s\" , cfg -> authpending_file ? cfg -> authpending_file : \"(null)\" ) ; D ( cfg -> debug_file , \"origin=%s\" , cfg -> origin ? cfg -> origin : \"(null)\" ) ; D ( cfg -> debug_file , \"appid=%s\" , cfg -> appid ? cfg -> appid : \"(null)\" ) ; D ( cfg -> debug_file , \"prompt=%s\" , cfg -> prompt ? cfg -> prompt : \"(null)\" ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cfg ) { struct stat st ; FILE * file = NULL ; int fd = - 1 ; <S2SV_ModStart> } else { fd = open ( filename , O_WRONLY | O_APPEND | O_CLOEXEC | O_NOFOLLOW | O_NOCTTY ) ; if ( fd >= 0 && ( fstat ( fd <S2SV_ModEnd> , & st <S2SV_ModStart> == 0 ) && <S2SV_ModEnd> S_ISREG ( st <S2SV_ModStart> { file = fdopen ( fd <S2SV_ModEnd> , \"a\" ) <S2SV_ModStart> = file ; cfg -> is_custom_debug_file = 1 ; file = NULL ; fd = - 1 ; <S2SV_ModEnd> } } } <S2SV_ModStart> ) ; } if ( fd != - 1 ) close ( fd ) ; if ( file != NULL ) fclose ( file ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7854\n\n```\nCWE-125 static RList * r_bin_wasm_get_global_entries ( RBinWasmObj * bin , RBinWasmSection * sec ) { RList * ret = NULL ; RBinWasmGlobalEntry * ptr = NULL ; <S2SV_StartBug> int buflen = bin -> buf -> length ; <S2SV_EndBug> if ( sec -> payload_data + 32 > buflen ) { return NULL ; } if ( ! ( ret = r_list_newf ( ( RListFree ) free ) ) ) { return NULL ; } ut8 * buf = bin -> buf -> buf + ( ut32 ) sec -> payload_data ; ut32 len = sec -> payload_len ; ut32 count = sec -> count ; ut32 i = 0 , r = 0 ; while ( i < len && len < buflen && r < count ) { if ( ! ( ptr = R_NEW0 ( RBinWasmGlobalEntry ) ) ) { return ret ; } if ( len + 8 > buflen || ! ( consume_u8 ( buf + i , buf + len , ( ut8 * ) & ptr -> content_type , & i ) ) ) { goto beach ; } if ( len + 8 > buflen || ! ( consume_u8 ( buf + i , buf + len , & ptr -> mutability , & i ) ) ) { goto beach ; } if ( len + 8 > buflen || ! ( consume_init_expr ( buf + i , buf + len , R_BIN_WASM_END_OF_CODE , NULL , & i ) ) ) { goto beach ; } r_list_append ( ret , ptr ) ; r ++ ; } return ret ; beach : free ( ptr ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; if ( ! ( ret = r_list_newf ( ( RListFree ) free ) ) ) { return NULL ; } ut8 * buf = bin -> buf -> buf + ( ut32 ) sec -> payload_data ; <S2SV_ModStart> buf -> length - <S2SV_ModEnd> ( ut32 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8877\n\n```\nCWE-399 static gdImagePtr gdImageScaleTwoPass ( const gdImagePtr src , const unsigned int new_width , const unsigned int new_height ) { const unsigned int src_width = src -> sx ; const unsigned int src_height = src -> sy ; gdImagePtr tmp_im = NULL ; gdImagePtr dst = NULL ; if ( src_width == new_width && src_height == new_height ) { return gdImageClone ( src ) ; } if ( ! src -> trueColor ) { gdImagePaletteToTrueColor ( src ) ; } if ( src_width == new_width ) { tmp_im = src ; } else { tmp_im = gdImageCreateTrueColor ( new_width , src_height ) ; if ( tmp_im == NULL ) { return NULL ; } gdImageSetInterpolationMethod ( tmp_im , src -> interpolation_id ) ; _gdScalePass ( src , src_width , tmp_im , new_width , src_height , HORIZONTAL ) ; } if ( src_height == new_height ) { assert ( tmp_im != src ) ; return tmp_im ; } dst = gdImageCreateTrueColor ( new_width , new_height ) ; if ( dst != NULL ) { gdImageSetInterpolationMethod ( dst , src -> interpolation_id ) ; _gdScalePass ( tmp_im , src_height , dst , new_height , new_width , VERTICAL ) ; } if ( src != tmp_im ) { <S2SV_StartBug> gdFree ( tmp_im ) ; <S2SV_EndBug> } return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp_im ) { gdImageDestroy <S2SV_ModEnd> ( tmp_im )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int pn_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct sk_buff * skb = NULL ; struct sockaddr_pn sa ; int rval = - EOPNOTSUPP ; int copylen ; if ( flags & ~ ( MSG_PEEK | MSG_TRUNC | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_CMSG_COMPAT ) ) <S2SV_StartBug> goto out_nofree ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( sa ) ; skb = skb_recv_datagram ( sk , flags , noblock , & rval ) ; if ( skb == NULL ) goto out_nofree ; pn_skb_get_src_sockaddr ( skb , & sa ) ; copylen = skb -> len ; if ( len < copylen ) { msg -> msg_flags |= MSG_TRUNC ; copylen = len ; } rval = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copylen ) ; if ( rval ) { rval = - EFAULT ; goto out ; } rval = ( flags & MSG_TRUNC ) ? skb -> len : copylen ; <S2SV_StartBug> if ( msg -> msg_name != NULL ) <S2SV_EndBug> <S2SV_StartBug> memcpy ( msg -> msg_name , & sa , sizeof ( struct sockaddr_pn ) ) ; <S2SV_EndBug> out : skb_free_datagram ( sk , skb ) ; out_nofree : return rval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto out_nofree <S2SV_ModEnd> ; skb = <S2SV_ModStart> != NULL ) { <S2SV_ModStart> , sizeof ( sa ) ) ; * addr_len = sizeof ( sa ) ; } <S2SV_ModEnd> out : skb_free_datagram\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9555\n\n```\nCWE-125 sctp_disposition_t sctp_sf_ootb ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { struct sctp_chunk * chunk = arg ; struct sk_buff * skb = chunk -> skb ; sctp_chunkhdr_t * ch ; sctp_errhdr_t * err ; __u8 * ch_end ; int ootb_shut_ack = 0 ; int ootb_cookie_ack = 0 ; SCTP_INC_STATS ( net , SCTP_MIB_OUTOFBLUES ) ; ch = ( sctp_chunkhdr_t * ) chunk -> chunk_hdr ; do { if ( ntohs ( ch -> length ) < sizeof ( sctp_chunkhdr_t ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; <S2SV_StartBug> if ( SCTP_CID_SHUTDOWN_ACK == ch -> type ) <S2SV_EndBug> ootb_shut_ack = 1 ; if ( SCTP_CID_ABORT == ch -> type ) return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; if ( SCTP_CID_COOKIE_ACK == ch -> type ) ootb_cookie_ack = 1 ; if ( SCTP_CID_ERROR == ch -> type ) { sctp_walk_errors ( err , ch ) { if ( SCTP_ERROR_STALE_COOKIE == err -> cause ) { ootb_cookie_ack = 1 ; break ; } } } ch_end = ( ( __u8 * ) ch ) + SCTP_PAD4 ( ntohs ( ch -> length ) ) ; if ( ch_end > skb_tail_pointer ( skb ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; <S2SV_StartBug> ch = ( sctp_chunkhdr_t * ) ch_end ; <S2SV_EndBug> } while ( ch_end < skb_tail_pointer ( skb ) ) ; if ( ootb_shut_ack ) return sctp_sf_shut_8_4_5 ( net , ep , asoc , type , arg , commands ) ; else if ( ootb_cookie_ack ) return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; else return sctp_sf_tabort_8_4_8 ( net , ep , asoc , type , arg , commands ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> commands ) ; <S2SV_ModEnd> ch_end = ( <S2SV_ModStart> commands ) ; if ( SCTP_CID_SHUTDOWN_ACK == ch -> type ) ootb_shut_ack = 1 ; if ( SCTP_CID_ABORT == ch -> type ) return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; if ( SCTP_CID_COOKIE_ACK == ch -> type ) ootb_cookie_ack = 1 ; if ( SCTP_CID_ERROR == ch -> type ) { sctp_walk_errors ( err , ch ) { if ( SCTP_ERROR_STALE_COOKIE == err -> cause ) { ootb_cookie_ack = 1 ; break ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_set_scale_mode ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> vpx_scaling_mode_t * const mode = va_arg ( args , vpx_scaling_mode_t * ) ; if ( mode ) { const int res = vp9_set_internal_size ( ctx -> cpi , ( VPX_SCALING ) mode -> h_scaling_mode , ( VPX_SCALING ) mode -> v_scaling_mode ) ; return ( res == 0 ) ? VPX_CODEC_OK : VPX_CODEC_INVALID_PARAM ; } else { return VPX_CODEC_INVALID_PARAM ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000251\n\n```\nCWE-787 static inline int l2cap_config_req ( struct l2cap_conn * conn , struct l2cap_cmd_hdr * cmd , u16 cmd_len , u8 * data ) { struct l2cap_conf_req * req = ( struct l2cap_conf_req * ) data ; u16 dcid , flags ; u8 rsp [ 64 ] ; struct sock * sk ; int len ; dcid = __le16_to_cpu ( req -> dcid ) ; flags = __le16_to_cpu ( req -> flags ) ; BT_DBG ( \"dcid<S2SV_blank>0x%4.4x<S2SV_blank>flags<S2SV_blank>0x%2.2x\" , dcid , flags ) ; sk = l2cap_get_chan_by_scid ( & conn -> chan_list , dcid ) ; if ( ! sk ) return - ENOENT ; if ( sk -> sk_state == BT_DISCONN ) goto unlock ; len = cmd_len - sizeof ( * req ) ; if ( l2cap_pi ( sk ) -> conf_len + len > sizeof ( l2cap_pi ( sk ) -> conf_req ) ) { l2cap_send_cmd ( conn , cmd -> ident , L2CAP_CONF_RSP , l2cap_build_conf_rsp ( sk , rsp , L2CAP_CONF_REJECT , flags ) , rsp ) ; goto unlock ; } memcpy ( l2cap_pi ( sk ) -> conf_req + l2cap_pi ( sk ) -> conf_len , req -> data , len ) ; l2cap_pi ( sk ) -> conf_len += len ; if ( flags & 0x0001 ) { l2cap_send_cmd ( conn , cmd -> ident , L2CAP_CONF_RSP , l2cap_build_conf_rsp ( sk , rsp , L2CAP_CONF_SUCCESS , 0x0001 ) , rsp ) ; goto unlock ; } len = l2cap_parse_conf_req ( sk , rsp ) ; <S2SV_StartBug> if ( len < 0 ) <S2SV_EndBug> goto unlock ; <S2SV_StartBug> l2cap_send_cmd ( conn , cmd -> ident , L2CAP_CONF_RSP , len , rsp ) ; <S2SV_EndBug> l2cap_pi ( sk ) -> conf_len = 0 ; if ( ! ( l2cap_pi ( sk ) -> conf_state & L2CAP_CONF_OUTPUT_DONE ) ) goto unlock ; if ( l2cap_pi ( sk ) -> conf_state & L2CAP_CONF_INPUT_DONE ) { sk -> sk_state = BT_CONNECTED ; l2cap_chan_ready ( sk ) ; goto unlock ; } if ( ! ( l2cap_pi ( sk ) -> conf_state & L2CAP_CONF_REQ_SENT ) ) { u8 buf [ 64 ] ; l2cap_send_cmd ( conn , l2cap_get_ident ( conn ) , L2CAP_CONF_REQ , l2cap_build_conf_req ( sk , buf ) , buf ) ; <S2SV_StartBug> } <S2SV_EndBug> unlock : bh_unlock_sock ( sk ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) { struct l2cap_disconn_req req ; req . dcid = cpu_to_le16 ( l2cap_pi ( sk ) -> dcid ) ; req . scid = cpu_to_le16 ( l2cap_pi ( sk ) -> scid ) ; l2cap_send_cmd ( conn , l2cap_get_ident ( conn ) , L2CAP_DISCONN_REQ , sizeof ( req ) , & req ) ; <S2SV_ModStart> goto unlock ; } <S2SV_ModStart> , rsp ) ; l2cap_pi ( sk ) -> num_conf_rsp ++ <S2SV_ModStart> buf ) ; l2cap_pi ( sk ) -> num_conf_req ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5472\n\n```\nCWE-20 static int parse_rock_ridge_inode_internal ( struct iso_directory_record * de , <S2SV_StartBug> struct inode * inode , int regard_xa ) <S2SV_EndBug> { int symlink_len = 0 ; <S2SV_StartBug> int cnt , sig ; <S2SV_EndBug> struct inode * reloc ; struct rock_ridge * rr ; int rootflag ; struct rock_state rs ; int ret = 0 ; if ( ! ISOFS_SB ( inode -> i_sb ) -> s_rock ) return 0 ; init_rock_state ( & rs , inode ) ; setup_rock_ridge ( de , inode , & rs ) ; <S2SV_StartBug> if ( regard_xa ) { <S2SV_EndBug> rs . chr += 14 ; rs . len -= 14 ; if ( rs . len < 0 ) rs . len = 0 ; } repeat : while ( rs . len > 2 ) { rr = ( struct rock_ridge * ) rs . chr ; if ( rr -> len < 3 ) goto out ; sig = isonum_721 ( rs . chr ) ; if ( rock_check_overflow ( & rs , sig ) ) goto eio ; rs . chr += rr -> len ; rs . len -= rr -> len ; if ( rs . len < 0 ) goto out ; switch ( sig ) { # ifndef CONFIG_ZISOFS case SIG ( 'R' , 'R' ) : if ( ( rr -> u . RR . flags [ 0 ] & ( RR_PX | RR_TF | RR_SL | RR_CL ) ) == 0 ) goto out ; break ; # endif case SIG ( 'S' , 'P' ) : if ( check_sp ( rr , inode ) ) goto out ; break ; case SIG ( 'C' , 'E' ) : rs . cont_extent = isonum_733 ( rr -> u . CE . extent ) ; rs . cont_offset = isonum_733 ( rr -> u . CE . offset ) ; rs . cont_size = isonum_733 ( rr -> u . CE . size ) ; break ; case SIG ( 'E' , 'R' ) : ISOFS_SB ( inode -> i_sb ) -> s_rock = 1 ; printk ( KERN_DEBUG \"ISO<S2SV_blank>9660<S2SV_blank>Extensions:<S2SV_blank>\" ) ; { int p ; for ( p = 0 ; p < rr -> u . ER . len_id ; p ++ ) printk ( \"%c\" , rr -> u . ER . data [ p ] ) ; } printk ( \"\\\\n\" ) ; break ; case SIG ( 'P' , 'X' ) : inode -> i_mode = isonum_733 ( rr -> u . PX . mode ) ; set_nlink ( inode , isonum_733 ( rr -> u . PX . n_links ) ) ; i_uid_write ( inode , isonum_733 ( rr -> u . PX . uid ) ) ; i_gid_write ( inode , isonum_733 ( rr -> u . PX . gid ) ) ; break ; case SIG ( 'P' , 'N' ) : { int high , low ; high = isonum_733 ( rr -> u . PN . dev_high ) ; low = isonum_733 ( rr -> u . PN . dev_low ) ; if ( ( low & ~ 0xff ) && high == 0 ) { inode -> i_rdev = MKDEV ( low >> 8 , low & 0xff ) ; } else { inode -> i_rdev = MKDEV ( high , low ) ; } } break ; case SIG ( 'T' , 'F' ) : cnt = 0 ; if ( rr -> u . TF . flags & TF_CREATE ) { inode -> i_ctime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_ctime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_MODIFY ) { inode -> i_mtime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_mtime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_ACCESS ) { inode -> i_atime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_atime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_ATTRIBUTES ) { inode -> i_ctime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_ctime . tv_nsec = 0 ; } break ; case SIG ( 'S' , 'L' ) : { int slen ; struct SL_component * slp ; struct SL_component * oldslp ; slen = rr -> len - 5 ; slp = & rr -> u . SL . link ; inode -> i_size = symlink_len ; while ( slen > 1 ) { rootflag = 0 ; switch ( slp -> flags & ~ 1 ) { case 0 : inode -> i_size += slp -> len ; break ; case 2 : inode -> i_size += 1 ; break ; case 4 : inode -> i_size += 2 ; break ; case 8 : rootflag = 1 ; inode -> i_size += 1 ; break ; default : printk ( \"Symlink<S2SV_blank>component<S2SV_blank>flag<S2SV_blank>\" \"not<S2SV_blank>implemented\\\\n\" ) ; } slen -= slp -> len + 2 ; oldslp = slp ; slp = ( struct SL_component * ) ( ( ( char * ) slp ) + slp -> len + 2 ) ; if ( slen < 2 ) { if ( ( ( rr -> u . SL . flags & 1 ) != 0 ) && ( ( oldslp -> flags & 1 ) == 0 ) ) inode -> i_size += 1 ; break ; } if ( ! rootflag && ( oldslp -> flags & 1 ) == 0 ) inode -> i_size += 1 ; } } symlink_len = inode -> i_size ; break ; case SIG ( 'R' , 'E' ) : printk ( KERN_WARNING \"Attempt<S2SV_blank>to<S2SV_blank>read<S2SV_blank>inode<S2SV_blank>for<S2SV_blank>\" \"relocated<S2SV_blank>directory\\\\n\" ) ; goto out ; case SIG ( 'C' , 'L' ) : <S2SV_StartBug> ISOFS_I ( inode ) -> i_first_extent = <S2SV_EndBug> isonum_733 ( rr -> u . CL . location ) ; reloc = <S2SV_StartBug> isofs_iget ( inode -> i_sb , <S2SV_EndBug> <S2SV_StartBug> ISOFS_I ( inode ) -> i_first_extent , <S2SV_EndBug> 0 ) ; if ( IS_ERR ( reloc ) ) { ret = PTR_ERR ( reloc ) ; goto out ; } inode -> i_mode = reloc -> i_mode ; set_nlink ( inode , reloc -> i_nlink ) ; inode -> i_uid = reloc -> i_uid ; inode -> i_gid = reloc -> i_gid ; inode -> i_rdev = reloc -> i_rdev ; inode -> i_size = reloc -> i_size ; inode -> i_blocks = reloc -> i_blocks ; inode -> i_atime = reloc -> i_atime ; inode -> i_ctime = reloc -> i_ctime ; inode -> i_mtime = reloc -> i_mtime ; iput ( reloc ) ; break ; # ifdef CONFIG_ZISOFS case SIG ( 'Z' , 'F' ) : { int algo ; if ( ISOFS_SB ( inode -> i_sb ) -> s_nocompress ) break ; algo = isonum_721 ( rr -> u . ZF . algorithm ) ; if ( algo == SIG ( 'p' , 'z' ) ) { int block_shift = isonum_711 ( & rr -> u . ZF . parms [ 1 ] ) ; if ( block_shift > 17 ) { printk ( KERN_WARNING \"isofs:<S2SV_blank>\" \"Can\\'t<S2SV_blank>handle<S2SV_blank>ZF<S2SV_blank>block<S2SV_blank>\" \"size<S2SV_blank>of<S2SV_blank>2^%d\\\\n\" , block_shift ) ; } else { ISOFS_I ( inode ) -> i_file_format = isofs_file_compressed ; ISOFS_I ( inode ) -> i_format_parm [ 0 ] = isonum_711 ( & rr -> u . ZF . parms [ 0 ] ) ; ISOFS_I ( inode ) -> i_format_parm [ 1 ] = isonum_711 ( & rr -> u . ZF . parms [ 1 ] ) ; inode -> i_size = isonum_733 ( rr -> u . ZF . real_size ) ; } } else { printk ( KERN_WARNING \"isofs:<S2SV_blank>Unknown<S2SV_blank>ZF<S2SV_blank>compression<S2SV_blank>\" \"algorithm:<S2SV_blank>%c%c\\\\n\" , rr -> u . ZF . algorithm [ 0 ] , rr -> u . ZF . algorithm [ 1 ] ) ; } break ; } # endif default : break ; } } ret = rock_continue ( & rs ) ; if ( ret == 0 ) goto repeat ; if ( ret == 1 ) ret = 0 ; out : kfree ( rs . buffer ) ; return ret ; eio : ret = - EIO ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode , int flags <S2SV_ModEnd> ) { int <S2SV_ModStart> cnt , sig ; unsigned int reloc_block <S2SV_ModStart> ; if ( flags & RR_REGARD_XA <S2SV_ModEnd> ) { rs <S2SV_ModStart> 'L' ) : if ( flags & RR_RELOC_DE ) { printk ( KERN_ERR \"ISOFS:<S2SV_blank>Recursive<S2SV_blank>directory<S2SV_blank>relocation<S2SV_blank>\" \"is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; goto eio ; } reloc_block = isonum_733 ( rr -> u . CL . location ) ; if ( reloc_block == <S2SV_ModStart> inode ) -> i_iget5_block && ISOFS_I ( inode ) -> i_iget5_offset == 0 ) { printk ( KERN_ERR \"ISOFS:<S2SV_blank>Directory<S2SV_blank>relocation<S2SV_blank>points<S2SV_blank>to<S2SV_blank>\" \"itself\\\\n\" ) ; goto eio ; } ISOFS_I ( inode ) -> i_first_extent = reloc_block <S2SV_ModEnd> ; reloc = <S2SV_ModStart> ; reloc = isofs_iget_reloc <S2SV_ModEnd> ( inode -> <S2SV_ModStart> -> i_sb , reloc_block , <S2SV_ModEnd> 0 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16820\n\n```\nCWE-415 static int csnmp_read_table ( host_definition_t * host , data_definition_t * data ) { struct snmp_pdu * req ; struct snmp_pdu * res = NULL ; struct variable_list * vb ; const data_set_t * ds ; size_t oid_list_len = data -> values_len + 1 ; oid_t oid_list [ oid_list_len ] ; _Bool oid_list_todo [ oid_list_len ] ; int status ; size_t i ; csnmp_list_instances_t * instance_list_head ; csnmp_list_instances_t * instance_list_tail ; csnmp_table_values_t * * value_list_head ; csnmp_table_values_t * * value_list_tail ; DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>csnmp_read_table<S2SV_blank>(host<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%s)\" , host -> name , data -> name ) ; if ( host -> sess_handle == NULL ) { DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>csnmp_read_table:<S2SV_blank>host->sess_handle<S2SV_blank>==<S2SV_blank>NULL\" ) ; return ( - 1 ) ; } ds = plugin_get_ds ( data -> type ) ; if ( ! ds ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>DataSet<S2SV_blank>`%s\\'<S2SV_blank>not<S2SV_blank>defined.\" , data -> type ) ; return ( - 1 ) ; } if ( ds -> ds_num != data -> values_len ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>DataSet<S2SV_blank>`%s\\'<S2SV_blank>requires<S2SV_blank>%zu<S2SV_blank>values,<S2SV_blank>but<S2SV_blank>config<S2SV_blank>talks<S2SV_blank>\" \"about<S2SV_blank>%zu\" , data -> type , ds -> ds_num , data -> values_len ) ; return ( - 1 ) ; } assert ( data -> values_len > 0 ) ; memcpy ( oid_list , data -> values , data -> values_len * sizeof ( oid_t ) ) ; if ( data -> instance . oid . oid_len > 0 ) memcpy ( oid_list + data -> values_len , & data -> instance . oid , sizeof ( oid_t ) ) ; else oid_list_len -- ; for ( i = 0 ; i < oid_list_len ; i ++ ) oid_list_todo [ i ] = 1 ; value_list_head = calloc ( data -> values_len , sizeof ( * value_list_head ) ) ; value_list_tail = calloc ( data -> values_len , sizeof ( * value_list_tail ) ) ; if ( ( value_list_head == NULL ) || ( value_list_tail == NULL ) ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>csnmp_read_table:<S2SV_blank>calloc<S2SV_blank>failed.\" ) ; sfree ( value_list_head ) ; sfree ( value_list_tail ) ; return ( - 1 ) ; } instance_list_head = NULL ; instance_list_tail = NULL ; status = 0 ; while ( status == 0 ) { int oid_list_todo_num ; req = snmp_pdu_create ( SNMP_MSG_GETNEXT ) ; if ( req == NULL ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>snmp_pdu_create<S2SV_blank>failed.\" ) ; status = - 1 ; break ; } oid_list_todo_num = 0 ; for ( i = 0 ; i < oid_list_len ; i ++ ) { if ( ! oid_list_todo [ i ] ) continue ; oid_list_todo_num ++ ; snmp_add_null_var ( req , oid_list [ i ] . oid , oid_list [ i ] . oid_len ) ; } if ( oid_list_todo_num == 0 ) { <S2SV_StartBug> DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>all<S2SV_blank>variables<S2SV_blank>have<S2SV_blank>left<S2SV_blank>their<S2SV_blank>subtree\" ) ; <S2SV_EndBug> status = 0 ; break ; } res = NULL ; status = snmp_sess_synch_response ( host -> sess_handle , req , & res ) ; if ( ( status != STAT_SUCCESS ) || ( res == NULL ) ) { char * errstr = NULL ; snmp_sess_error ( host -> sess_handle , NULL , NULL , & errstr ) ; c_complain ( LOG_ERR , & host -> complaint , \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>%s:<S2SV_blank>snmp_sess_synch_response<S2SV_blank>failed:<S2SV_blank>%s\" , host -> name , ( errstr == NULL ) ? \"Unknown<S2SV_blank>problem\" : errstr ) ; if ( res != NULL ) snmp_free_pdu ( res ) ; res = NULL ; <S2SV_StartBug> req = NULL ; <S2SV_EndBug> sfree ( errstr ) ; csnmp_host_close_session ( host ) ; status = - 1 ; break ; } status = 0 ; assert ( res != NULL ) ; c_release ( LOG_INFO , & host -> complaint , \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>%s:<S2SV_blank>snmp_sess_synch_response<S2SV_blank>successful.\" , host -> name ) ; vb = res -> variables ; if ( vb == NULL ) { status = - 1 ; break ; } for ( vb = res -> variables , i = 0 ; ( vb != NULL ) ; vb = vb -> next_variable , i ++ ) { while ( ( i < oid_list_len ) && ! oid_list_todo [ i ] ) i ++ ; if ( ( data -> instance . oid . oid_len > 0 ) && ( i == data -> values_len ) ) { if ( ( vb -> type == SNMP_ENDOFMIBVIEW ) || ( snmp_oid_ncompare ( data -> instance . oid . oid , data -> instance . oid . oid_len , vb -> name , vb -> name_length , data -> instance . oid . oid_len ) != 0 ) ) { DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>Instance<S2SV_blank>left<S2SV_blank>its<S2SV_blank>subtree.\" , host -> name , data -> name ) ; oid_list_todo [ i ] = 0 ; continue ; } if ( csnmp_instance_list_add ( & instance_list_head , & instance_list_tail , res , host , data ) != 0 ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>%s:<S2SV_blank>csnmp_instance_list_add<S2SV_blank>failed.\" , host -> name ) ; status = - 1 ; break ; } } else { csnmp_table_values_t * vt ; oid_t vb_name ; oid_t suffix ; int ret ; csnmp_oid_init ( & vb_name , vb -> name , vb -> name_length ) ; ret = csnmp_oid_suffix ( & suffix , & vb_name , data -> values + i ) ; if ( ret != 0 ) { DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>i<S2SV_blank>=<S2SV_blank>%zu;<S2SV_blank>\" \"Value<S2SV_blank>probably<S2SV_blank>left<S2SV_blank>its<S2SV_blank>subtree.\" , host -> name , data -> name , i ) ; oid_list_todo [ i ] = 0 ; continue ; } if ( ( value_list_tail [ i ] != NULL ) && ( csnmp_oid_compare ( & suffix , & value_list_tail [ i ] -> suffix ) <= 0 ) ) { DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>i<S2SV_blank>=<S2SV_blank>%zu;<S2SV_blank>\" \"Suffix<S2SV_blank>is<S2SV_blank>not<S2SV_blank>increasing.\" , host -> name , data -> name , i ) ; oid_list_todo [ i ] = 0 ; continue ; } vt = calloc ( 1 , sizeof ( * vt ) ) ; if ( vt == NULL ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>calloc<S2SV_blank>failed.\" ) ; status = - 1 ; break ; } vt -> value = csnmp_value_list_to_value ( vb , ds -> ds [ i ] . type , data -> scale , data -> shift , host -> name , data -> name ) ; memcpy ( & vt -> suffix , & suffix , sizeof ( vt -> suffix ) ) ; vt -> next = NULL ; if ( value_list_tail [ i ] == NULL ) value_list_head [ i ] = vt ; else value_list_tail [ i ] -> next = vt ; value_list_tail [ i ] = vt ; } memcpy ( oid_list [ i ] . oid , vb -> name , sizeof ( oid ) * vb -> name_length ) ; oid_list [ i ] . oid_len = vb -> name_length ; } if ( res != NULL ) snmp_free_pdu ( res ) ; res = NULL ; } if ( res != NULL ) snmp_free_pdu ( res ) ; res = NULL ; <S2SV_StartBug> if ( req != NULL ) <S2SV_EndBug> snmp_free_pdu ( req ) ; req = NULL ; if ( status == 0 ) csnmp_dispatch_table ( host , data , instance_list_head , value_list_head ) ; while ( instance_list_head != NULL ) { csnmp_list_instances_t * next = instance_list_head -> next ; sfree ( instance_list_head ) ; instance_list_head = next ; } for ( i = 0 ; i < data -> values_len ; i ++ ) { while ( value_list_head [ i ] != NULL ) { csnmp_table_values_t * next = value_list_head [ i ] -> next ; sfree ( value_list_head [ i ] ) ; value_list_head [ i ] = next ; } } sfree ( value_list_head ) ; sfree ( value_list_tail ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>all<S2SV_blank>variables<S2SV_blank>have<S2SV_blank>left<S2SV_blank>their<S2SV_blank>subtree\" ) ; snmp_free_pdu ( req <S2SV_ModStart> = NULL ; <S2SV_ModEnd> sfree ( errstr <S2SV_ModStart> ; if ( <S2SV_ModEnd> status == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16839\n\n```\nCWE-119 CURLcode Curl_auth_create_plain_message ( struct Curl_easy * data , const char * userp , const char * passwdp , char * * outptr , size_t * outlen ) { CURLcode result ; char * plainauth ; size_t ulen ; size_t plen ; size_t plainlen ; * outlen = 0 ; * outptr = NULL ; ulen = strlen ( userp ) ; plen = strlen ( passwdp ) ; <S2SV_StartBug> if ( ( ulen > SIZE_T_MAX / 2 ) || ( plen > ( SIZE_T_MAX / 2 - 2 ) ) ) <S2SV_EndBug> return CURLE_OUT_OF_MEMORY ; plainlen = 2 * ulen + plen + 2 ; plainauth = malloc ( plainlen ) ; if ( ! plainauth ) return CURLE_OUT_OF_MEMORY ; memcpy ( plainauth , userp , ulen ) ; plainauth [ ulen ] = '\\\\0' ; memcpy ( plainauth + ulen + 1 , userp , ulen ) ; plainauth [ 2 * ulen + 1 ] = '\\\\0' ; memcpy ( plainauth + 2 * ulen + 2 , passwdp , plen ) ; result = Curl_base64_encode ( data , plainauth , plainlen , outptr , outlen ) ; free ( plainauth ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> > SIZE_T_MAX / 4 <S2SV_ModEnd> ) || (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2220\n\n```\nCWE-119 PHP_FUNCTION ( radius_get_vendor_attr ) { <S2SV_StartBug> int res ; <S2SV_EndBug> <S2SV_StartBug> const void * data ; <S2SV_EndBug> int len ; <S2SV_StartBug> u_int32_t vendor ; <S2SV_EndBug> <S2SV_StartBug> if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"s\" , & data , & len ) == FAILURE ) { <S2SV_EndBug> return ; } <S2SV_StartBug> res = rad_get_vendor_attr ( & vendor , & data , ( size_t * ) & len ) ; <S2SV_EndBug> if ( res == - 1 ) { RETURN_FALSE ; } else { array_init ( return_value ) ; <S2SV_StartBug> add_assoc_long ( return_value , \"attr\" , res ) ; <S2SV_EndBug> add_assoc_long ( return_value , \"vendor\" , vendor ) ; <S2SV_StartBug> add_assoc_stringl ( return_value , \"data\" , ( char * ) data , len , 1 ) ; <S2SV_EndBug> return ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> radius_get_vendor_attr ) { <S2SV_ModEnd> const void * <S2SV_ModStart> void * data , * raw <S2SV_ModStart> ; u_int32_t vendor ; unsigned char type ; size_t data_len <S2SV_ModStart> \"s\" , & raw <S2SV_ModEnd> , & len <S2SV_ModStart> return ; } if ( <S2SV_ModEnd> rad_get_vendor_attr ( & <S2SV_ModStart> vendor , & type , & data , & data_len , raw , len ) <S2SV_ModEnd> == - 1 <S2SV_ModStart> , \"attr\" , type <S2SV_ModEnd> ) ; add_assoc_long <S2SV_ModStart> ) data , data_len <S2SV_ModEnd> , 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9996\n\n```\nCWE-119 static int cdxl_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * pkt ) { CDXLVideoContext * c = avctx -> priv_data ; AVFrame * const p = data ; int ret , w , h , encoding , aligned_width , buf_size = pkt -> size ; const uint8_t * buf = pkt -> data ; if ( buf_size < 32 ) return AVERROR_INVALIDDATA ; encoding = buf [ 1 ] & 7 ; c -> format = buf [ 1 ] & 0xE0 ; w = AV_RB16 ( & buf [ 14 ] ) ; h = AV_RB16 ( & buf [ 16 ] ) ; c -> bpp = buf [ 19 ] ; c -> palette_size = AV_RB16 ( & buf [ 20 ] ) ; c -> palette = buf + 32 ; c -> video = c -> palette + c -> palette_size ; c -> video_size = buf_size - c -> palette_size - 32 ; if ( c -> palette_size > 512 ) return AVERROR_INVALIDDATA ; if ( buf_size < c -> palette_size + 32 ) return AVERROR_INVALIDDATA ; if ( c -> bpp < 1 ) return AVERROR_INVALIDDATA ; if ( c -> format != BIT_PLANAR && c -> format != BIT_LINE && c -> format != CHUNKY ) { avpriv_request_sample ( avctx , \"Pixel<S2SV_blank>format<S2SV_blank>0x%0x\" , c -> format ) ; return AVERROR_PATCHWELCOME ; } if ( ( ret = ff_set_dimensions ( avctx , w , h ) ) < 0 ) return ret ; if ( c -> format == CHUNKY ) aligned_width = avctx -> width ; else aligned_width = FFALIGN ( c -> avctx -> width , 16 ) ; c -> padded_bits = aligned_width - c -> avctx -> width ; if ( c -> video_size < aligned_width * avctx -> height * ( int64_t ) c -> bpp / 8 ) return AVERROR_INVALIDDATA ; <S2SV_StartBug> if ( ! encoding && c -> palette_size && c -> bpp <= 8 ) { <S2SV_EndBug> avctx -> pix_fmt = AV_PIX_FMT_PAL8 ; } else if ( encoding == 1 && ( c -> bpp == 6 || c -> bpp == 8 ) ) { if ( c -> palette_size != ( 1 << ( c -> bpp - 1 ) ) ) return AVERROR_INVALIDDATA ; avctx -> pix_fmt = AV_PIX_FMT_BGR24 ; } else if ( ! encoding && c -> bpp == 24 && c -> format == CHUNKY && ! c -> palette_size ) { avctx -> pix_fmt = AV_PIX_FMT_RGB24 ; } else { avpriv_request_sample ( avctx , \"Encoding<S2SV_blank>%d,<S2SV_blank>bpp<S2SV_blank>%d<S2SV_blank>and<S2SV_blank>format<S2SV_blank>0x%x\" , encoding , c -> bpp , c -> format ) ; return AVERROR_PATCHWELCOME ; } if ( ( ret = ff_get_buffer ( avctx , p , 0 ) ) < 0 ) return ret ; p -> pict_type = AV_PICTURE_TYPE_I ; if ( encoding ) { av_fast_padded_malloc ( & c -> new_video , & c -> new_video_size , h * w + AV_INPUT_BUFFER_PADDING_SIZE ) ; if ( ! c -> new_video ) return AVERROR ( ENOMEM ) ; if ( c -> bpp == 8 ) cdxl_decode_ham8 ( c , p ) ; else cdxl_decode_ham6 ( c , p ) ; } else if ( avctx -> pix_fmt == AV_PIX_FMT_PAL8 ) { cdxl_decode_rgb ( c , p ) ; } else { cdxl_decode_raw ( c , p ) ; } * got_frame = 1 ; return buf_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bpp <= 8 && c -> format != CHUNKY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void httpClientParseQopParam ( const HttpParam * param , HttpWwwAuthenticateHeader * authHeader ) { # if ( HTTP_CLIENT_DIGEST_AUTH_SUPPORT == ENABLED ) size_t i ; size_t n ; authHeader -> qop = HTTP_AUTH_QOP_NONE ; for ( i = 0 ; i < param -> valueLen ; i += ( n + 1 ) ) { for ( n = 0 ; ( i + n ) < param -> valueLen ; n ++ ) { <S2SV_StartBug> if ( strchr ( \",<S2SV_blank>\\\\t\" , param -> value [ i + n ] ) ) <S2SV_EndBug> break ; } if ( n == 4 && ! osStrncasecmp ( param -> value + i , \"auth\" , 4 ) ) { authHeader -> qop = HTTP_AUTH_QOP_AUTH ; } } if ( authHeader -> qop == HTTP_AUTH_QOP_NONE ) { authHeader -> mode = HTTP_AUTH_MODE_NONE ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( osStrchr <S2SV_ModEnd> ( \",<S2SV_blank>\\\\t\" , <S2SV_ModStart> n ] ) != NULL ) { break ; } <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14225\n\n```\nCWE-476 static int show_stream ( WriterContext * w , AVFormatContext * fmt_ctx , int stream_idx , InputStream * ist , int in_program ) { AVStream * stream = ist -> st ; AVCodecParameters * par ; AVCodecContext * dec_ctx ; char val_str [ 128 ] ; const char * s ; AVRational sar , dar ; AVBPrint pbuf ; const AVCodecDescriptor * cd ; int ret = 0 ; const char * profile = NULL ; av_bprint_init ( & pbuf , 1 , AV_BPRINT_SIZE_UNLIMITED ) ; writer_print_section_header ( w , in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM ) ; print_int ( \"index\" , stream -> index ) ; par = stream -> codecpar ; dec_ctx = ist -> dec_ctx ; if ( cd = avcodec_descriptor_get ( par -> codec_id ) ) { print_str ( \"codec_name\" , cd -> name ) ; if ( ! do_bitexact ) { print_str ( \"codec_long_name\" , cd -> long_name ? cd -> long_name : \"unknown\" ) ; } } else { print_str_opt ( \"codec_name\" , \"unknown\" ) ; if ( ! do_bitexact ) { print_str_opt ( \"codec_long_name\" , \"unknown\" ) ; } } if ( ! do_bitexact && ( profile = avcodec_profile_name ( par -> codec_id , par -> profile ) ) ) print_str ( \"profile\" , profile ) ; else { if ( par -> profile != FF_PROFILE_UNKNOWN ) { char profile_num [ 12 ] ; snprintf ( profile_num , sizeof ( profile_num ) , \"%d\" , par -> profile ) ; print_str ( \"profile\" , profile_num ) ; } else print_str_opt ( \"profile\" , \"unknown\" ) ; } s = av_get_media_type_string ( par -> codec_type ) ; if ( s ) print_str ( \"codec_type\" , s ) ; else print_str_opt ( \"codec_type\" , \"unknown\" ) ; # if FF_API_LAVF_AVCTX if ( dec_ctx ) print_q ( \"codec_time_base\" , dec_ctx -> time_base , '/' ) ; # endif print_str ( \"codec_tag_string\" , av_fourcc2str ( par -> codec_tag ) ) ; print_fmt ( \"codec_tag\" , \"0x%04\" PRIx32 , par -> codec_tag ) ; switch ( par -> codec_type ) { case AVMEDIA_TYPE_VIDEO : print_int ( \"width\" , par -> width ) ; print_int ( \"height\" , par -> height ) ; if ( dec_ctx ) { print_int ( \"coded_width\" , dec_ctx -> coded_width ) ; print_int ( \"coded_height\" , dec_ctx -> coded_height ) ; } print_int ( \"has_b_frames\" , par -> video_delay ) ; sar = av_guess_sample_aspect_ratio ( fmt_ctx , stream , NULL ) ; if ( sar . den ) { print_q ( \"sample_aspect_ratio\" , sar , ':' ) ; av_reduce ( & dar . num , & dar . den , par -> width * sar . num , par -> height * sar . den , 1024 * 1024 ) ; print_q ( \"display_aspect_ratio\" , dar , ':' ) ; } else { print_str_opt ( \"sample_aspect_ratio\" , \"N/A\" ) ; print_str_opt ( \"display_aspect_ratio\" , \"N/A\" ) ; } s = av_get_pix_fmt_name ( par -> format ) ; if ( s ) print_str ( \"pix_fmt\" , s ) ; else print_str_opt ( \"pix_fmt\" , \"unknown\" ) ; print_int ( \"level\" , par -> level ) ; if ( par -> color_range != AVCOL_RANGE_UNSPECIFIED ) print_str ( \"color_range\" , av_color_range_name ( par -> color_range ) ) ; else print_str_opt ( \"color_range\" , \"N/A\" ) ; if ( par -> color_space != AVCOL_SPC_UNSPECIFIED ) print_str ( \"color_space\" , av_color_space_name ( par -> color_space ) ) ; else print_str_opt ( \"color_space\" , av_color_space_name ( par -> color_space ) ) ; if ( par -> color_trc != AVCOL_TRC_UNSPECIFIED ) print_str ( \"color_transfer\" , av_color_transfer_name ( par -> color_trc ) ) ; else print_str_opt ( \"color_transfer\" , av_color_transfer_name ( par -> color_trc ) ) ; <S2SV_StartBug> if ( par -> color_primaries != AVCOL_PRI_UNSPECIFIED ) <S2SV_EndBug> print_str ( \"color_primaries\" , av_color_primaries_name ( par -> color_primaries ) ) ; else print_str_opt ( \"color_primaries\" , av_color_primaries_name ( par -> color_primaries ) ) ; if ( par -> chroma_location != AVCHROMA_LOC_UNSPECIFIED ) print_str ( \"chroma_location\" , av_chroma_location_name ( par -> chroma_location ) ) ; else print_str_opt ( \"chroma_location\" , av_chroma_location_name ( par -> chroma_location ) ) ; if ( par -> field_order == AV_FIELD_PROGRESSIVE ) print_str ( \"field_order\" , \"progressive\" ) ; else if ( par -> field_order == AV_FIELD_TT ) print_str ( \"field_order\" , \"tt\" ) ; else if ( par -> field_order == AV_FIELD_BB ) print_str ( \"field_order\" , \"bb\" ) ; else if ( par -> field_order == AV_FIELD_TB ) print_str ( \"field_order\" , \"tb\" ) ; else if ( par -> field_order == AV_FIELD_BT ) print_str ( \"field_order\" , \"bt\" ) ; else print_str_opt ( \"field_order\" , \"unknown\" ) ; # if FF_API_PRIVATE_OPT if ( dec_ctx && dec_ctx -> timecode_frame_start >= 0 ) { char tcbuf [ AV_TIMECODE_STR_SIZE ] ; av_timecode_make_mpeg_tc_string ( tcbuf , dec_ctx -> timecode_frame_start ) ; print_str ( \"timecode\" , tcbuf ) ; } else { print_str_opt ( \"timecode\" , \"N/A\" ) ; } # endif if ( dec_ctx ) print_int ( \"refs\" , dec_ctx -> refs ) ; break ; case AVMEDIA_TYPE_AUDIO : s = av_get_sample_fmt_name ( par -> format ) ; if ( s ) print_str ( \"sample_fmt\" , s ) ; else print_str_opt ( \"sample_fmt\" , \"unknown\" ) ; print_val ( \"sample_rate\" , par -> sample_rate , unit_hertz_str ) ; print_int ( \"channels\" , par -> channels ) ; if ( par -> channel_layout ) { av_bprint_clear ( & pbuf ) ; av_bprint_channel_layout ( & pbuf , par -> channels , par -> channel_layout ) ; print_str ( \"channel_layout\" , pbuf . str ) ; } else { print_str_opt ( \"channel_layout\" , \"unknown\" ) ; } print_int ( \"bits_per_sample\" , av_get_bits_per_sample ( par -> codec_id ) ) ; break ; case AVMEDIA_TYPE_SUBTITLE : if ( par -> width ) print_int ( \"width\" , par -> width ) ; else print_str_opt ( \"width\" , \"N/A\" ) ; if ( par -> height ) print_int ( \"height\" , par -> height ) ; else print_str_opt ( \"height\" , \"N/A\" ) ; break ; } if ( dec_ctx && dec_ctx -> codec && dec_ctx -> codec -> priv_class && show_private_data ) { const AVOption * opt = NULL ; while ( opt = av_opt_next ( dec_ctx -> priv_data , opt ) ) { uint8_t * str ; if ( opt -> flags ) continue ; if ( av_opt_get ( dec_ctx -> priv_data , opt -> name , 0 , & str ) >= 0 ) { print_str ( opt -> name , str ) ; av_free ( str ) ; } } } if ( fmt_ctx -> iformat -> flags & AVFMT_SHOW_IDS ) print_fmt ( \"id\" , \"0x%x\" , stream -> id ) ; else print_str_opt ( \"id\" , \"N/A\" ) ; print_q ( \"r_frame_rate\" , stream -> r_frame_rate , '/' ) ; print_q ( \"avg_frame_rate\" , stream -> avg_frame_rate , '/' ) ; print_q ( \"time_base\" , stream -> time_base , '/' ) ; print_ts ( \"start_pts\" , stream -> start_time ) ; print_time ( \"start_time\" , stream -> start_time , & stream -> time_base ) ; print_ts ( \"duration_ts\" , stream -> duration ) ; print_time ( \"duration\" , stream -> duration , & stream -> time_base ) ; if ( par -> bit_rate > 0 ) print_val ( \"bit_rate\" , par -> bit_rate , unit_bit_per_second_str ) ; else print_str_opt ( \"bit_rate\" , \"N/A\" ) ; # if FF_API_LAVF_AVCTX if ( stream -> codec -> rc_max_rate > 0 ) print_val ( \"max_bit_rate\" , stream -> codec -> rc_max_rate , unit_bit_per_second_str ) ; else print_str_opt ( \"max_bit_rate\" , \"N/A\" ) ; # endif if ( dec_ctx && dec_ctx -> bits_per_raw_sample > 0 ) print_fmt ( \"bits_per_raw_sample\" , \"%d\" , dec_ctx -> bits_per_raw_sample ) ; else print_str_opt ( \"bits_per_raw_sample\" , \"N/A\" ) ; if ( stream -> nb_frames ) print_fmt ( \"nb_frames\" , \"%\" PRId64 , stream -> nb_frames ) ; else print_str_opt ( \"nb_frames\" , \"N/A\" ) ; if ( nb_streams_frames [ stream_idx ] ) print_fmt ( \"nb_read_frames\" , \"%\" PRIu64 , nb_streams_frames [ stream_idx ] ) ; else print_str_opt ( \"nb_read_frames\" , \"N/A\" ) ; if ( nb_streams_packets [ stream_idx ] ) print_fmt ( \"nb_read_packets\" , \"%\" PRIu64 , nb_streams_packets [ stream_idx ] ) ; else print_str_opt ( \"nb_read_packets\" , \"N/A\" ) ; if ( do_show_data ) writer_print_data ( w , \"extradata\" , par -> extradata , par -> extradata_size ) ; writer_print_data_hash ( w , \"extradata_hash\" , par -> extradata , par -> extradata_size ) ; # define PRINT_DISPOSITION ( flagname , name ) do { print_int ( name , ! ! ( stream -> disposition & AV_DISPOSITION_ ## flagname ) ) ; } while ( 0 ) if ( do_show_stream_disposition ) { writer_print_section_header ( w , in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION ) ; PRINT_DISPOSITION ( DEFAULT , \"default\" ) ; PRINT_DISPOSITION ( DUB , \"dub\" ) ; PRINT_DISPOSITION ( ORIGINAL , \"original\" ) ; PRINT_DISPOSITION ( COMMENT , \"comment\" ) ; PRINT_DISPOSITION ( LYRICS , \"lyrics\" ) ; PRINT_DISPOSITION ( KARAOKE , \"karaoke\" ) ; PRINT_DISPOSITION ( FORCED , \"forced\" ) ; PRINT_DISPOSITION ( HEARING_IMPAIRED , \"hearing_impaired\" ) ; PRINT_DISPOSITION ( VISUAL_IMPAIRED , \"visual_impaired\" ) ; PRINT_DISPOSITION ( CLEAN_EFFECTS , \"clean_effects\" ) ; PRINT_DISPOSITION ( ATTACHED_PIC , \"attached_pic\" ) ; PRINT_DISPOSITION ( TIMED_THUMBNAILS , \"timed_thumbnails\" ) ; writer_print_section_footer ( w ) ; } if ( do_show_stream_tags ) ret = show_tags ( w , stream -> metadata , in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS ) ; if ( stream -> nb_side_data ) { print_pkt_side_data ( w , stream -> codecpar , stream -> side_data , stream -> nb_side_data , SECTION_ID_STREAM_SIDE_DATA_LIST , SECTION_ID_STREAM_SIDE_DATA ) ; } writer_print_section_footer ( w ) ; av_bprint_finalize ( & pbuf , NULL ) ; fflush ( stdout ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; print_primaries ( w , <S2SV_ModEnd> par -> color_primaries <S2SV_ModStart> par -> color_primaries <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 static int scm_fp_copy ( struct cmsghdr * cmsg , struct scm_fp_list * * fplp ) { int * fdp = ( int * ) CMSG_DATA ( cmsg ) ; struct scm_fp_list * fpl = * fplp ; struct file * * fpp ; int i , num ; num = ( cmsg -> cmsg_len - CMSG_ALIGN ( sizeof ( struct cmsghdr ) ) ) / sizeof ( int ) ; if ( num <= 0 ) return 0 ; if ( num > SCM_MAX_FD ) return - EINVAL ; if ( ! fpl ) { fpl = kmalloc ( sizeof ( struct scm_fp_list ) , GFP_KERNEL ) ; if ( ! fpl ) return - ENOMEM ; * fplp = fpl ; fpl -> count = 0 ; fpl -> max = SCM_MAX_FD ; <S2SV_StartBug> } <S2SV_EndBug> fpp = & fpl -> fp [ fpl -> count ] ; if ( fpl -> count + num > fpl -> max ) return - EINVAL ; for ( i = 0 ; i < num ; i ++ ) { int fd = fdp [ i ] ; struct file * file ; if ( fd < 0 || ! ( file = fget_raw ( fd ) ) ) return - EBADF ; * fpp ++ = file ; fpl -> count ++ ; } <S2SV_StartBug> return num ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = SCM_MAX_FD ; fpl -> user = NULL ; <S2SV_ModStart> ++ ; } if ( ! fpl -> user ) fpl -> user = get_uid ( current_user ( ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 <S2SV_StartBug> static void show_object ( struct object * object , struct strbuf * path , <S2SV_EndBug> <S2SV_StartBug> const char * last , void * data ) <S2SV_EndBug> { struct bitmap * base = data ; bitmap_set ( base , find_object_pos ( object -> oid . hash ) ) ; mark_as_seen ( object ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * object , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-1152\n\n```\nCWE-20 static enum try_read_result try_read_network ( conn * c ) { enum try_read_result gotdata = READ_NO_DATA_RECEIVED ; int res ; <S2SV_StartBug> assert ( c != NULL ) ; <S2SV_EndBug> if ( c -> rcurr != c -> rbuf ) { if ( c -> rbytes != 0 ) memmove ( c -> rbuf , c -> rcurr , c -> rbytes ) ; c -> rcurr = c -> rbuf ; } while ( 1 ) { <S2SV_StartBug> if ( c -> rbytes >= c -> rsize ) { <S2SV_EndBug> char * new_rbuf = realloc ( c -> rbuf , c -> rsize * 2 ) ; if ( ! new_rbuf ) { if ( settings . verbose > 0 ) fprintf ( stderr , \"Couldn\\'t<S2SV_blank>realloc<S2SV_blank>input<S2SV_blank>buffer\\\\n\" ) ; c -> rbytes = 0 ; out_string ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>reading<S2SV_blank>request\" ) ; c -> write_and_go = conn_closing ; return READ_MEMORY_ERROR ; } c -> rcurr = c -> rbuf = new_rbuf ; c -> rsize *= 2 ; } int avail = c -> rsize - c -> rbytes ; res = read ( c -> sfd , c -> rbuf + c -> rbytes , avail ) ; if ( res > 0 ) { pthread_mutex_lock ( & c -> thread -> stats . mutex ) ; c -> thread -> stats . bytes_read += res ; pthread_mutex_unlock ( & c -> thread -> stats . mutex ) ; gotdata = READ_DATA_RECEIVED ; c -> rbytes += res ; if ( res == avail ) { continue ; } else { break ; } } if ( res == 0 ) { return READ_ERROR ; } if ( res == - 1 ) { if ( errno == EAGAIN || errno == EWOULDBLOCK ) { break ; } return READ_ERROR ; } } return gotdata ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int res ; int num_allocs = 0 ; <S2SV_ModStart> rsize ) { if ( num_allocs == 4 ) { return gotdata ; } ++ num_allocs ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10146\n\n```\nCWE-399 static Image * ReadCAPTIONImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char * caption , geometry [ MaxTextExtent ] , * property , * text ; const char * gravity , * option ; DrawInfo * draw_info ; Image * image ; MagickBooleanType split , status ; register ssize_t i ; size_t height , width ; TypeMetric metrics ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; ( void ) ResetImagePage ( image , \"0x0+0+0\" ) ; option = GetImageOption ( image_info , \"filename\" ) ; if ( option == ( const char * ) NULL ) property = InterpretImageProperties ( image_info , image , image_info -> filename ) ; else if ( LocaleNCompare ( option , \"caption:\" , 8 ) == 0 ) property = InterpretImageProperties ( image_info , image , option + 8 ) ; else property = InterpretImageProperties ( image_info , image , option ) ; ( void ) SetImageProperty ( image , \"caption\" , property ) ; property = DestroyString ( property ) ; caption = ConstantString ( GetImageProperty ( image , \"caption\" ) ) ; draw_info = CloneDrawInfo ( image_info , ( DrawInfo * ) NULL ) ; ( void ) CloneString ( & draw_info -> text , caption ) ; gravity = GetImageOption ( image_info , \"gravity\" ) ; if ( gravity != ( char * ) NULL ) draw_info -> gravity = ( GravityType ) ParseCommandOption ( MagickGravityOptions , MagickFalse , gravity ) ; split = MagickFalse ; status = MagickTrue ; if ( image -> columns == 0 ) { text = AcquireString ( caption ) ; i = FormatMagickCaption ( image , draw_info , split , & metrics , & text ) ; ( void ) CloneString ( & draw_info -> text , text ) ; text = DestroyString ( text ) ; ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; status = GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; image -> columns = width ; } if ( image -> rows == 0 ) { split = MagickTrue ; text = AcquireString ( caption ) ; i = FormatMagickCaption ( image , draw_info , split , & metrics , & text ) ; ( void ) CloneString ( & draw_info -> text , text ) ; text = DestroyString ( text ) ; ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; status = GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; image -> rows = ( size_t ) ( ( i + 1 ) * ( metrics . ascent - metrics . descent + draw_info -> interline_spacing + draw_info -> stroke_width ) + 0.5 ) ; } if ( status != MagickFalse ) status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( SetImageBackgroundColor ( image ) == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; InheritException ( exception , & image -> exception ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( ( fabs ( image_info -> pointsize ) < MagickEpsilon ) && ( strlen ( caption ) > 0 ) ) { double high , low ; for ( ; ; draw_info -> pointsize *= 2.0 ) { text = AcquireString ( caption ) ; i = FormatMagickCaption ( image , draw_info , split , & metrics , & text ) ; ( void ) CloneString ( & draw_info -> text , text ) ; text = DestroyString ( text ) ; ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; status = GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; ( void ) status ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; height = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; if ( ( image -> columns != 0 ) && ( image -> rows != 0 ) ) { if ( ( width >= image -> columns ) && ( height >= image -> rows ) ) break ; } else if ( ( ( image -> columns != 0 ) && ( width >= image -> columns ) ) || ( ( image -> rows != 0 ) && ( height >= image -> rows ) ) ) break ; } high = draw_info -> pointsize ; for ( low = 1.0 ; ( high - low ) > 0.5 ; ) { draw_info -> pointsize = ( low + high ) / 2.0 ; text = AcquireString ( caption ) ; i = FormatMagickCaption ( image , draw_info , split , & metrics , & text ) ; ( void ) CloneString ( & draw_info -> text , text ) ; text = DestroyString ( text ) ; ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; ( void ) GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; height = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; if ( ( image -> columns != 0 ) && ( image -> rows != 0 ) ) { if ( ( width < image -> columns ) && ( height < image -> rows ) ) low = draw_info -> pointsize + 0.5 ; else high = draw_info -> pointsize - 0.5 ; } else if ( ( ( image -> columns != 0 ) && ( width < image -> columns ) ) || ( ( image -> rows != 0 ) && ( height < image -> rows ) ) ) low = draw_info -> pointsize + 0.5 ; else high = draw_info -> pointsize - 0.5 ; } draw_info -> pointsize = floor ( ( low + high ) / 2.0 - 0.5 ) ; } i = FormatMagickCaption ( image , draw_info , split , & metrics , & caption ) ; ( void ) CloneString ( & draw_info -> text , caption ) ; ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , MagickMax ( draw_info -> direction == RightToLeftDirection ? image -> columns - metrics . bounds . x2 : - metrics . bounds . x1 , 0.0 ) , draw_info -> gravity == UndefinedGravity ? metrics . ascent : 0.0 ) ; <S2SV_StartBug> draw_info -> geometry = AcquireString ( geometry ) ; <S2SV_EndBug> status = AnnotateImage ( image , draw_info ) ; if ( image_info -> pointsize == 0.0 ) { char pointsize [ MaxTextExtent ] ; ( void ) FormatLocaleString ( pointsize , MaxTextExtent , \"%.20g\" , draw_info -> pointsize ) ; ( void ) SetImageProperty ( image , \"caption:pointsize\" , pointsize ) ; } draw_info = DestroyDrawInfo ( draw_info ) ; caption = DestroyString ( caption ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0.0 ) ; ( void ) CloneString ( & <S2SV_ModStart> draw_info -> geometry , <S2SV_ModEnd> geometry ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 static void fifo_open ( notify_fifo_t * fifo , int ( * script_exit ) ( thread_t * ) , const char * type ) { int ret ; int sav_errno ; if ( fifo -> name ) { sav_errno = 0 ; if ( ! ( ret = mkfifo ( fifo -> name , S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ) ) ) fifo -> created_fifo = true ; else { sav_errno = errno ; if ( sav_errno != EEXIST ) log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>%snotify<S2SV_blank>fifo<S2SV_blank>%s\" , type , fifo -> name ) ; } if ( ! sav_errno || sav_errno == EEXIST ) { if ( fifo -> script ) notify_fifo_exec ( master , script_exit , fifo , fifo -> script ) ; <S2SV_StartBug> if ( ( fifo -> fd = open ( fifo -> name , O_RDWR | O_CLOEXEC | O_NONBLOCK ) ) == - 1 ) { <S2SV_EndBug> log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%snotify<S2SV_blank>fifo<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>errno<S2SV_blank>%d\" , type , fifo -> name , errno ) ; if ( fifo -> created_fifo ) { unlink ( fifo -> name ) ; fifo -> created_fifo = false ; } } } if ( fifo -> fd == - 1 ) { FREE ( fifo -> name ) ; fifo -> name = NULL ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> O_CLOEXEC | O_NONBLOCK | O_NOFOLLOW\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-129(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9162\n\n```\nCWE-129 int snmp_helper ( void * context , size_t hdrlen , unsigned char tag , const void * data , size_t datalen ) { struct snmp_ctx * ctx = ( struct snmp_ctx * ) context ; <S2SV_StartBug> __be32 * pdata = ( __be32 * ) data ; <S2SV_EndBug> if ( * pdata == ctx -> from ) { pr_debug ( \"%s:<S2SV_blank>%pI4<S2SV_blank>to<S2SV_blank>%pI4\\\\n\" , __func__ , ( void * ) & ctx -> from , ( void * ) & ctx -> to ) ; if ( * ctx -> check ) fast_csum ( ctx , ( unsigned char * ) data - ctx -> begin ) ; * pdata = ctx -> to ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; __be32 * pdata ; if ( datalen != 4 ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4081\n\n```\nCWE-000 static int ghash_update ( struct shash_desc * desc , const u8 * src , unsigned int srclen ) { struct ghash_desc_ctx * dctx = shash_desc_ctx ( desc ) ; struct ghash_ctx * ctx = crypto_shash_ctx ( desc -> tfm ) ; u8 * dst = dctx -> buffer ; <S2SV_StartBug> if ( dctx -> bytes ) { <S2SV_EndBug> int n = min ( srclen , dctx -> bytes ) ; u8 * pos = dst + ( GHASH_BLOCK_SIZE - dctx -> bytes ) ; dctx -> bytes -= n ; srclen -= n ; while ( n -- ) * pos ++ ^= * src ++ ; if ( ! dctx -> bytes ) gf128mul_4k_lle ( ( be128 * ) dst , ctx -> gf128 ) ; } while ( srclen >= GHASH_BLOCK_SIZE ) { crypto_xor ( dst , src , GHASH_BLOCK_SIZE ) ; gf128mul_4k_lle ( ( be128 * ) dst , ctx -> gf128 ) ; src += GHASH_BLOCK_SIZE ; srclen -= GHASH_BLOCK_SIZE ; } if ( srclen ) { dctx -> bytes = GHASH_BLOCK_SIZE - srclen ; while ( srclen -- ) * dst ++ ^= * src ++ ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! ctx -> gf128 ) return - ENOKEY ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19840\n\n```\nCWE-835 int WavpackSetConfiguration64 ( WavpackContext * wpc , WavpackConfig * config , int64_t total_samples , const unsigned char * chan_ids ) { uint32_t flags , bps = 0 ; uint32_t chan_mask = config -> channel_mask ; int num_chans = config -> num_channels ; <S2SV_StartBug> int i ; <S2SV_EndBug> wpc -> stream_version = ( config -> flags & CONFIG_COMPATIBLE_WRITE ) ? CUR_STREAM_VERS : MAX_STREAM_VERS ; if ( ( config -> qmode & QMODE_DSD_AUDIO ) && config -> bytes_per_sample == 1 && config -> bits_per_sample == 8 ) { # ifdef ENABLE_DSD wpc -> dsd_multiplier = 1 ; flags = DSD_FLAG ; for ( i = 14 ; i >= 0 ; -- i ) if ( config -> sample_rate % sample_rates [ i ] == 0 ) { int divisor = config -> sample_rate / sample_rates [ i ] ; if ( divisor && ( divisor & ( divisor - 1 ) ) == 0 ) { config -> sample_rate /= divisor ; wpc -> dsd_multiplier = divisor ; break ; } } if ( config -> flags & CONFIG_HYBRID_FLAG ) { strcpy ( wpc -> error_message , \"hybrid<S2SV_blank>mode<S2SV_blank>not<S2SV_blank>available<S2SV_blank>for<S2SV_blank>DSD!\" ) ; return FALSE ; } config -> flags &= ( CONFIG_HIGH_FLAG | CONFIG_MD5_CHECKSUM | CONFIG_PAIR_UNDEF_CHANS ) ; config -> float_norm_exp = config -> xmode = 0 ; # else strcpy ( wpc -> error_message , \"libwavpack<S2SV_blank>not<S2SV_blank>configured<S2SV_blank>for<S2SV_blank>DSD!\" ) ; return FALSE ; # endif } else flags = config -> bytes_per_sample - 1 ; wpc -> total_samples = total_samples ; wpc -> config . sample_rate = config -> sample_rate ; wpc -> config . num_channels = config -> num_channels ; wpc -> config . channel_mask = config -> channel_mask ; wpc -> config . bits_per_sample = config -> bits_per_sample ; wpc -> config . bytes_per_sample = config -> bytes_per_sample ; wpc -> config . block_samples = config -> block_samples ; wpc -> config . flags = config -> flags ; wpc -> config . qmode = config -> qmode ; if ( config -> flags & CONFIG_VERY_HIGH_FLAG ) wpc -> config . flags |= CONFIG_HIGH_FLAG ; for ( i = 0 ; i < 15 ; ++ i ) if ( wpc -> config . sample_rate == sample_rates [ i ] ) break ; flags |= i << SRATE_LSB ; if ( ! ( flags & DSD_FLAG ) ) { if ( config -> float_norm_exp ) { wpc -> config . float_norm_exp = config -> float_norm_exp ; wpc -> config . flags |= CONFIG_FLOAT_DATA ; flags |= FLOAT_DATA ; } else flags |= ( ( config -> bytes_per_sample * 8 ) - config -> bits_per_sample ) << SHIFT_LSB ; if ( config -> flags & CONFIG_HYBRID_FLAG ) { flags |= HYBRID_FLAG | HYBRID_BITRATE | HYBRID_BALANCE ; if ( ! ( wpc -> config . flags & CONFIG_SHAPE_OVERRIDE ) ) { wpc -> config . flags |= CONFIG_HYBRID_SHAPE | CONFIG_AUTO_SHAPING ; flags |= HYBRID_SHAPE | NEW_SHAPING ; } else if ( wpc -> config . flags & CONFIG_HYBRID_SHAPE ) { wpc -> config . shaping_weight = config -> shaping_weight ; flags |= HYBRID_SHAPE | NEW_SHAPING ; } if ( wpc -> config . flags & ( CONFIG_CROSS_DECORR | CONFIG_OPTIMIZE_WVC ) ) flags |= CROSS_DECORR ; if ( config -> flags & CONFIG_BITRATE_KBPS ) { bps = ( uint32_t ) floor ( config -> bitrate * 256000.0 / config -> sample_rate / config -> num_channels + 0.5 ) ; if ( bps > ( 64 << 8 ) ) bps = 64 << 8 ; } else bps = ( uint32_t ) floor ( config -> bitrate * 256.0 + 0.5 ) ; } else flags |= CROSS_DECORR ; if ( ! ( config -> flags & CONFIG_JOINT_OVERRIDE ) || ( config -> flags & CONFIG_JOINT_STEREO ) ) flags |= JOINT_STEREO ; if ( config -> flags & CONFIG_CREATE_WVC ) wpc -> wvc_flag = TRUE ; } if ( chan_ids ) { int lastchan = 0 , mask_copy = chan_mask ; if ( ( int ) strlen ( ( char * ) chan_ids ) > num_chans ) { strcpy ( wpc -> error_message , \"chan_ids<S2SV_blank>longer<S2SV_blank>than<S2SV_blank>num<S2SV_blank>channels!\" ) ; return FALSE ; } while ( * chan_ids ) if ( * chan_ids <= 32 && * chan_ids > lastchan && ( mask_copy & ( 1 << ( * chan_ids - 1 ) ) ) ) { mask_copy &= ~ ( 1 << ( * chan_ids - 1 ) ) ; lastchan = * chan_ids ++ ; } else break ; for ( i = 0 ; chan_ids [ i ] ; i ++ ) if ( chan_ids [ i ] != 0xff ) { wpc -> channel_identities = ( unsigned char * ) strdup ( ( char * ) chan_ids ) ; break ; } } for ( wpc -> current_stream = 0 ; num_chans ; wpc -> current_stream ++ ) { WavpackStream * wps = malloc ( sizeof ( WavpackStream ) ) ; unsigned char left_chan_id = 0 , right_chan_id = 0 ; int pos , chans = 1 ; wpc -> streams = realloc ( wpc -> streams , ( wpc -> current_stream + 1 ) * sizeof ( wpc -> streams [ 0 ] ) ) ; wpc -> streams [ wpc -> current_stream ] = wps ; CLEAR ( * wps ) ; if ( chan_mask ) for ( pos = 0 ; pos < 32 ; ++ pos ) if ( chan_mask & ( 1 << pos ) ) { if ( left_chan_id ) { right_chan_id = pos + 1 ; break ; } else { chan_mask &= ~ ( 1 << pos ) ; left_chan_id = pos + 1 ; } } while ( ! right_chan_id && chan_ids && * chan_ids ) if ( left_chan_id ) right_chan_id = * chan_ids ; else left_chan_id = * chan_ids ++ ; if ( ! left_chan_id ) left_chan_id = right_chan_id = 0xff ; else if ( ! right_chan_id ) right_chan_id = 0xff ; if ( num_chans >= 2 ) { if ( ( config -> flags & CONFIG_PAIR_UNDEF_CHANS ) && left_chan_id == 0xff && right_chan_id == 0xff ) chans = 2 ; else for ( i = 0 ; i < NUM_STEREO_PAIRS ; ++ i ) if ( ( left_chan_id == stereo_pairs [ i ] . a && right_chan_id == stereo_pairs [ i ] . b ) || ( left_chan_id == stereo_pairs [ i ] . b && right_chan_id == stereo_pairs [ i ] . a ) ) { if ( right_chan_id <= 32 && ( chan_mask & ( 1 << ( right_chan_id - 1 ) ) ) ) chan_mask &= ~ ( 1 << ( right_chan_id - 1 ) ) ; else if ( chan_ids && * chan_ids == right_chan_id ) chan_ids ++ ; chans = 2 ; break ; } } num_chans -= chans ; if ( num_chans && wpc -> current_stream == NEW_MAX_STREAMS - 1 ) break ; memcpy ( wps -> wphdr . ckID , \"wvpk\" , 4 ) ; wps -> wphdr . ckSize = sizeof ( WavpackHeader ) - 8 ; SET_TOTAL_SAMPLES ( wps -> wphdr , wpc -> total_samples ) ; wps -> wphdr . version = wpc -> stream_version ; wps -> wphdr . flags = flags ; wps -> bits = bps ; if ( ! wpc -> current_stream ) wps -> wphdr . flags |= INITIAL_BLOCK ; if ( ! num_chans ) wps -> wphdr . flags |= FINAL_BLOCK ; if ( chans == 1 ) { wps -> wphdr . flags &= ~ ( JOINT_STEREO | CROSS_DECORR | HYBRID_BALANCE ) ; wps -> wphdr . flags |= MONO_FLAG ; } } wpc -> num_streams = wpc -> current_stream ; wpc -> current_stream = 0 ; if ( num_chans ) { strcpy ( wpc -> error_message , \"too<S2SV_blank>many<S2SV_blank>channels!\" ) ; return FALSE ; } if ( config -> flags & CONFIG_EXTRA_MODE ) wpc -> config . xmode = config -> xmode ? config -> xmode : 1 ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; if ( ! config -> sample_rate ) { strcpy ( wpc -> error_message , \"sample<S2SV_blank>rate<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>zero!\" ) ; return FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty ast_for_funcdef ( struct compiling * c , const node * n , asdl_seq * decorator_seq ) { return ast_for_funcdef_impl ( c , n , decorator_seq , <S2SV_StartBug> 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , decorator_seq , false <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_write_complete ( void * opaque , int ret ) { SCSIDiskReq * r = ( SCSIDiskReq * ) opaque ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; <S2SV_StartBug> uint32_t len ; <S2SV_EndBug> uint32_t n ; if ( r -> req . aiocb != NULL ) { r -> req . aiocb = NULL ; bdrv_acct_done ( s -> bs , & r -> acct ) ; } if ( ret ) { if ( scsi_handle_rw_error ( r , - ret , SCSI_REQ_STATUS_RETRY_WRITE ) ) { return ; } } <S2SV_StartBug> n = r -> iov . iov_len / 512 ; <S2SV_EndBug> r -> sector += n ; r -> sector_count -= n ; if ( r -> sector_count == 0 ) { scsi_req_complete ( & r -> req , GOOD ) ; } else { <S2SV_StartBug> len = r -> sector_count * 512 ; <S2SV_EndBug> if ( len > SCSI_DMA_BUF_SIZE ) { len = SCSI_DMA_BUF_SIZE ; } r -> iov . iov_len = len ; <S2SV_StartBug> DPRINTF ( \"Write<S2SV_blank>complete<S2SV_blank>tag=0x%x<S2SV_blank>more=%d\\\\n\" , r -> req . tag , len ) ; <S2SV_EndBug> <S2SV_StartBug> scsi_req_data ( & r -> req , len ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; uint32_t <S2SV_ModEnd> n ; if <S2SV_ModStart> = r -> qiov . size <S2SV_ModEnd> / 512 ; <S2SV_ModStart> } else { scsi_init_iovec ( r ) <S2SV_ModEnd> ; DPRINTF ( <S2SV_ModStart> . tag , r -> qiov . size <S2SV_ModEnd> ) ; scsi_req_data <S2SV_ModStart> -> req , r -> qiov . size <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13300\n\n```\nCWE-787 <S2SV_StartBug> static MagickPixelPacket * * AcquirePixelThreadSet ( const Image * image ) <S2SV_EndBug> { MagickPixelPacket * * pixels ; register ssize_t i , j ; size_t <S2SV_StartBug> number_threads ; <S2SV_EndBug> number_threads = ( size_t ) GetMagickResourceLimit ( ThreadResource ) ; pixels = ( MagickPixelPacket * * ) AcquireQuantumMemory ( number_threads , sizeof ( * pixels ) ) ; if ( pixels == ( MagickPixelPacket * * ) NULL ) return ( ( MagickPixelPacket * * ) NULL ) ; ( void ) memset ( pixels , 0 , number_threads * sizeof ( * pixels ) ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) number_threads ; i ++ ) <S2SV_EndBug> { <S2SV_StartBug> pixels [ i ] = ( MagickPixelPacket * ) AcquireQuantumMemory ( image -> columns , <S2SV_EndBug> sizeof ( * * pixels ) ) ; if ( pixels [ i ] == ( MagickPixelPacket * ) NULL ) return ( DestroyPixelThreadSet ( pixels ) ) ; <S2SV_StartBug> for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) <S2SV_EndBug> <S2SV_StartBug> GetMagickPixelPacket ( image , & pixels [ i ] [ j ] ) ; <S2SV_EndBug> } return ( pixels ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const Image * images ) { const Image * next ; <S2SV_ModEnd> MagickPixelPacket * * <S2SV_ModStart> j ; size_t columns , <S2SV_ModStart> ) ) ; columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; for ( <S2SV_ModEnd> i = 0 <S2SV_ModStart> ) AcquireQuantumMemory ( <S2SV_ModEnd> columns , sizeof <S2SV_ModStart> ( ssize_t ) <S2SV_ModEnd> columns ; j <S2SV_ModStart> ) GetMagickPixelPacket ( images <S2SV_ModEnd> , & pixels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_create_common ( VP8_COMMON * oci ) { vp8_machine_specific_config ( oci ) ; vp8_init_mbmode_probs ( oci ) ; vp8_default_bmode_probs ( oci -> fc . bmode_prob ) ; oci -> mb_no_coeff_skip = 1 ; oci -> no_lpf = 0 ; oci -> filter_type = NORMAL_LOOPFILTER ; oci -> use_bilinear_mc_filter = 0 ; oci -> full_pixel = 0 ; oci -> multi_token_partition = ONE_PARTITION ; oci -> clamp_type = RECON_CLAMP_REQUIRED ; <S2SV_StartBug> vpx_memset ( oci -> ref_frame_sign_bias , 0 , sizeof ( oci -> ref_frame_sign_bias ) ) ; <S2SV_EndBug> oci -> copy_buffer_to_gf = 0 ; oci -> copy_buffer_to_arf = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = RECON_CLAMP_REQUIRED ; memset <S2SV_ModEnd> ( oci ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12895\n\n```\nCWE-125 void icmp_print ( netdissect_options * ndo , const u_char * bp , u_int plen , const u_char * bp2 , int fragmented ) { char * cp ; const struct icmp * dp ; const struct icmp_ext_t * ext_dp ; const struct ip * ip ; const char * str , * fmt ; const struct ip * oip ; const struct udphdr * ouh ; const uint8_t * obj_tptr ; uint32_t raw_label ; const u_char * snapend_save ; const struct icmp_mpls_ext_object_header_t * icmp_mpls_ext_object_header ; u_int hlen , dport , mtu , obj_tlen , obj_class_num , obj_ctype ; char buf [ MAXHOSTNAMELEN + 100 ] ; struct cksum_vec vec [ 1 ] ; dp = ( const struct icmp * ) bp ; ext_dp = ( const struct icmp_ext_t * ) bp ; ip = ( const struct ip * ) bp2 ; str = buf ; ND_TCHECK ( dp -> icmp_code ) ; switch ( dp -> icmp_type ) { case ICMP_ECHO : case ICMP_ECHOREPLY : ND_TCHECK ( dp -> icmp_seq ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"echo<S2SV_blank>%s,<S2SV_blank>id<S2SV_blank>%u,<S2SV_blank>seq<S2SV_blank>%u\" , dp -> icmp_type == ICMP_ECHO ? \"request\" : \"reply\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) ) ; break ; case ICMP_UNREACH : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; switch ( dp -> icmp_code ) { case ICMP_UNREACH_PROTOCOL : ND_TCHECK ( dp -> icmp_ip . ip_p ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , dp -> icmp_ip . ip_p ) ; break ; case ICMP_UNREACH_PORT : ND_TCHECK ( dp -> icmp_ip . ip_p ) ; oip = & dp -> icmp_ip ; hlen = IP_HL ( oip ) * 4 ; ouh = ( const struct udphdr * ) ( ( ( const u_char * ) oip ) + hlen ) ; ND_TCHECK ( ouh -> uh_dport ) ; dport = EXTRACT_16BITS ( & ouh -> uh_dport ) ; switch ( oip -> ip_p ) { case IPPROTO_TCP : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>tcp<S2SV_blank>port<S2SV_blank>%s<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ; break ; case IPPROTO_UDP : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>udp<S2SV_blank>port<S2SV_blank>%s<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , udpport_string ( ndo , dport ) ) ; break ; default : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>port<S2SV_blank>%d<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , oip -> ip_p , dport ) ; break ; } break ; case ICMP_UNREACH_NEEDFRAG : { register const struct mtu_discovery * mp ; mp = ( const struct mtu_discovery * ) ( const u_char * ) & dp -> icmp_void ; mtu = EXTRACT_16BITS ( & mp -> nexthopmtu ) ; if ( mtu ) { ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>unreachable<S2SV_blank>-<S2SV_blank>need<S2SV_blank>to<S2SV_blank>frag<S2SV_blank>(mtu<S2SV_blank>%d)\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , mtu ) ; } else { ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>unreachable<S2SV_blank>-<S2SV_blank>need<S2SV_blank>to<S2SV_blank>frag\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) ) ; } } break ; default : fmt = tok2str ( unreach2str , \"#%d<S2SV_blank>%%s<S2SV_blank>unreachable\" , dp -> icmp_code ) ; ( void ) snprintf ( buf , sizeof ( buf ) , fmt , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) ) ; break ; } break ; case ICMP_REDIRECT : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; fmt = tok2str ( type2str , \"redirect-#%d<S2SV_blank>%%s<S2SV_blank>to<S2SV_blank>net<S2SV_blank>%%s\" , dp -> icmp_code ) ; ( void ) snprintf ( buf , sizeof ( buf ) , fmt , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , ipaddr_string ( ndo , & dp -> icmp_gwaddr ) ) ; break ; case ICMP_ROUTERADVERT : { register const struct ih_rdiscovery * ihp ; register const struct id_rdiscovery * idp ; u_int lifetime , num , size ; ( void ) snprintf ( buf , sizeof ( buf ) , \"router<S2SV_blank>advertisement\" ) ; cp = buf + strlen ( buf ) ; ihp = ( const struct ih_rdiscovery * ) & dp -> icmp_void ; ND_TCHECK ( * ihp ) ; ( void ) strncpy ( cp , \"<S2SV_blank>lifetime<S2SV_blank>\" , sizeof ( buf ) - ( cp - buf ) ) ; cp = buf + strlen ( buf ) ; lifetime = EXTRACT_16BITS ( & ihp -> ird_lifetime ) ; if ( lifetime < 60 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u\" , lifetime ) ; } else if ( lifetime < 60 * 60 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u:%02u\" , lifetime / 60 , lifetime % 60 ) ; } else { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u:%02u:%02u\" , lifetime / 3600 , ( lifetime % 3600 ) / 60 , lifetime % 60 ) ; } cp = buf + strlen ( buf ) ; num = ihp -> ird_addrnum ; ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>%d:\" , num ) ; cp = buf + strlen ( buf ) ; size = ihp -> ird_addrsiz ; if ( size != 2 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>[size<S2SV_blank>%d]\" , size ) ; break ; } idp = ( const struct id_rdiscovery * ) & dp -> icmp_data ; while ( num -- > 0 ) { ND_TCHECK ( * idp ) ; ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>{%s<S2SV_blank>%u}\" , ipaddr_string ( ndo , & idp -> ird_addr ) , EXTRACT_32BITS ( & idp -> ird_pref ) ) ; cp = buf + strlen ( buf ) ; ++ idp ; } } break ; case ICMP_TIMXCEED : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; switch ( dp -> icmp_code ) { case ICMP_TIMXCEED_INTRANS : str = \"time<S2SV_blank>exceeded<S2SV_blank>in-transit\" ; break ; case ICMP_TIMXCEED_REASS : str = \"ip<S2SV_blank>reassembly<S2SV_blank>time<S2SV_blank>exceeded\" ; break ; default : ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>exceeded-#%d\" , dp -> icmp_code ) ; break ; } break ; case ICMP_PARAMPROB : if ( dp -> icmp_code ) ( void ) snprintf ( buf , sizeof ( buf ) , \"parameter<S2SV_blank>problem<S2SV_blank>-<S2SV_blank>code<S2SV_blank>%d\" , dp -> icmp_code ) ; else { ND_TCHECK ( dp -> icmp_pptr ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"parameter<S2SV_blank>problem<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%d\" , dp -> icmp_pptr ) ; } break ; case ICMP_MASKREPLY : ND_TCHECK ( dp -> icmp_mask ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"address<S2SV_blank>mask<S2SV_blank>is<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & dp -> icmp_mask ) ) ; break ; case ICMP_TSTAMP : ND_TCHECK ( dp -> icmp_seq ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>stamp<S2SV_blank>query<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) ) ; break ; case ICMP_TSTAMPREPLY : ND_TCHECK ( dp -> icmp_ttime ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>stamp<S2SV_blank>reply<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u:<S2SV_blank>org<S2SV_blank>%s\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_otime ) ) ) ; ( void ) snprintf ( buf + strlen ( buf ) , sizeof ( buf ) - strlen ( buf ) , \",<S2SV_blank>recv<S2SV_blank>%s\" , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_rtime ) ) ) ; ( void ) snprintf ( buf + strlen ( buf ) , sizeof ( buf ) - strlen ( buf ) , \",<S2SV_blank>xmit<S2SV_blank>%s\" , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_ttime ) ) ) ; break ; default : str = tok2str ( icmp2str , \"type-#%d\" , dp -> icmp_type ) ; break ; } ND_PRINT ( ( ndo , \"ICMP<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , str , plen ) ) ; if ( ndo -> ndo_vflag && ! fragmented ) { uint16_t sum , icmp_sum ; if ( ND_TTEST2 ( * bp , plen ) ) { vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) dp ; vec [ 0 ] . len = plen ; sum = in_cksum ( vec , 1 ) ; if ( sum != 0 ) { icmp_sum = EXTRACT_16BITS ( & dp -> icmp_cksum ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(wrong<S2SV_blank>icmp<S2SV_blank>cksum<S2SV_blank>%x<S2SV_blank>(->%x)!)\" , icmp_sum , in_cksum_shouldbe ( icmp_sum , sum ) ) ) ; } } } if ( ndo -> ndo_vflag >= 1 && ICMP_ERRTYPE ( dp -> icmp_type ) ) { bp += 8 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; ip = ( const struct ip * ) bp ; snapend_save = ndo -> ndo_snapend ; ip_print ( ndo , bp , EXTRACT_16BITS ( & ip -> ip_len ) ) ; ndo -> ndo_snapend = snapend_save ; } if ( ndo -> ndo_vflag >= 1 && plen > ICMP_EXTD_MINLEN && ICMP_MPLS_EXT_TYPE ( dp -> icmp_type ) ) { ND_TCHECK ( * ext_dp ) ; <S2SV_StartBug> if ( ! ext_dp -> icmp_length ) { <S2SV_EndBug> vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) & ext_dp -> icmp_ext_version_res ; vec [ 0 ] . len = plen - ICMP_EXTD_MINLEN ; if ( in_cksum ( vec , 1 ) ) { return ; } } ND_PRINT ( ( ndo , \"\\\\n\\\\tMPLS<S2SV_blank>extension<S2SV_blank>v%u\" , ICMP_MPLS_EXT_EXTRACT_VERSION ( * ( ext_dp -> icmp_ext_version_res ) ) ) ) ; if ( ICMP_MPLS_EXT_EXTRACT_VERSION ( * ( ext_dp -> icmp_ext_version_res ) ) != ICMP_MPLS_EXT_VERSION ) { ND_PRINT ( ( ndo , \"<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" ) ) ; return ; } hlen = plen - ICMP_EXTD_MINLEN ; <S2SV_StartBug> vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) & ext_dp -> icmp_ext_version_res ; <S2SV_EndBug> vec [ 0 ] . len = hlen ; ND_PRINT ( ( ndo , \",<S2SV_blank>checksum<S2SV_blank>0x%04x<S2SV_blank>(%scorrect),<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( ext_dp -> icmp_ext_checksum ) , in_cksum ( vec , 1 ) ? \"in\" : \"\" , hlen ) ) ; <S2SV_StartBug> hlen -= 4 ; <S2SV_EndBug> obj_tptr = ( const uint8_t * ) ext_dp -> icmp_ext_data ; while ( hlen > sizeof ( struct icmp_mpls_ext_object_header_t ) ) { icmp_mpls_ext_object_header = ( const struct icmp_mpls_ext_object_header_t * ) obj_tptr ; ND_TCHECK ( * icmp_mpls_ext_object_header ) ; obj_tlen = EXTRACT_16BITS ( icmp_mpls_ext_object_header -> length ) ; obj_class_num = icmp_mpls_ext_object_header -> class_num ; obj_ctype = icmp_mpls_ext_object_header -> ctype ; obj_tptr += sizeof ( struct icmp_mpls_ext_object_header_t ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Object<S2SV_blank>(%u),<S2SV_blank>Class-Type:<S2SV_blank>%u,<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( icmp_mpls_ext_obj_values , \"unknown\" , obj_class_num ) , obj_class_num , obj_ctype , obj_tlen ) ) ; hlen -= sizeof ( struct icmp_mpls_ext_object_header_t ) ; if ( ( obj_class_num == 0 ) || ( obj_tlen < sizeof ( struct icmp_mpls_ext_object_header_t ) ) ) { return ; } obj_tlen -= sizeof ( struct icmp_mpls_ext_object_header_t ) ; switch ( obj_class_num ) { case 1 : switch ( obj_ctype ) { case 1 : ND_TCHECK2 ( * obj_tptr , 4 ) ; raw_label = EXTRACT_32BITS ( obj_tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>label<S2SV_blank>%u,<S2SV_blank>exp<S2SV_blank>%u\" , MPLS_LABEL ( raw_label ) , MPLS_EXP ( raw_label ) ) ) ; if ( MPLS_STACK ( raw_label ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>[S]\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>ttl<S2SV_blank>%u\" , MPLS_TTL ( raw_label ) ) ) ; break ; default : print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; } break ; case 2 : default : print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( hlen < obj_tlen ) break ; hlen -= obj_tlen ; obj_tptr += obj_tlen ; } } return ; trunc : ND_PRINT ( ( ndo , \"[|icmp]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext_dp -> icmp_length && ND_TTEST2 ( ext_dp -> icmp_ext_version_res , plen - ICMP_EXTD_MINLEN ) <S2SV_ModStart> - ICMP_EXTD_MINLEN ; if ( ND_TTEST2 ( ext_dp -> icmp_ext_version_res , hlen ) ) { <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 void jiffies_to_timespec ( const unsigned long jiffies , struct timespec * value ) { <S2SV_StartBug> u64 nsec = ( u64 ) jiffies * TICK_NSEC ; <S2SV_EndBug> <S2SV_StartBug> value -> tv_sec = div_long_long_rem ( nsec , NSEC_PER_SEC , & value -> tv_nsec ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) { u32 rem ; value -> tv_sec = div_u64_rem ( <S2SV_ModEnd> ( u64 ) <S2SV_ModStart> jiffies * TICK_NSEC , NSEC_PER_SEC , & rem ) <S2SV_ModStart> ; value -> tv_nsec = rem <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void enc624j600UpdateMacConfig ( NetInterface * interface ) { uint16_t duplexMode ; <S2SV_StartBug> duplexMode = enc624j600ReadReg ( interface , ENC624J600_REG_ESTAT ) & ESTAT_PHYDPX ; <S2SV_EndBug> if ( duplexMode ) { <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MACON2 , MACON2_DEFER | <S2SV_EndBug> MACON2_PADCFG2 | MACON2_PADCFG0 | MACON2_TXCRCEN | MACON2_R1 | MACON2_FULDPX ) ; <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MABBIPG , 0x15 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MACON2 , MACON2_DEFER | <S2SV_EndBug> MACON2_PADCFG2 | MACON2_PADCFG0 | MACON2_TXCRCEN | MACON2_R1 ) ; <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MABBIPG , 0x12 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC624J600_ESTAT ) & ENC624J600_ESTAT_PHYDPX <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( interface , ENC624J600_MACON2 , ENC624J600_MACON2_DEFER | ENC624J600_MACON2_PADCFG_AUTO | ENC624J600_MACON2_TXCRCEN | ENC624J600_MACON2_R1_DEFAULT | ENC624J600_MACON2_FULDPX <S2SV_ModEnd> ) ; enc624j600WriteReg <S2SV_ModStart> ( interface , ENC624J600_MABBIPG , ENC624J600_MABBIPG_BBIPG_DEFAULT_FD <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( interface , ENC624J600_MACON2 , ENC624J600_MACON2_DEFER | ENC624J600_MACON2_PADCFG_AUTO | ENC624J600_MACON2_TXCRCEN | ENC624J600_MACON2_R1_DEFAULT <S2SV_ModEnd> ) ; enc624j600WriteReg <S2SV_ModStart> ( interface , ENC624J600_MABBIPG , ENC624J600_MABBIPG_BBIPG_DEFAULT_HD <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-30019\n\n```\nCWE-787 GF_Err adts_dmx_process ( GF_Filter * filter ) { GF_ADTSDmxCtx * ctx = gf_filter_get_udta ( filter ) ; GF_FilterPacket * pck , * dst_pck ; u8 * data , * output ; u8 * start ; u32 pck_size , remain , prev_pck_size ; u64 cts = GF_FILTER_NO_TS ; if ( ! ctx -> duration . num ) adts_dmx_check_dur ( filter , ctx ) ; if ( ctx -> opid && ! ctx -> is_playing ) return GF_OK ; pck = gf_filter_pid_get_packet ( ctx -> ipid ) ; if ( ! pck ) { if ( gf_filter_pid_is_eos ( ctx -> ipid ) ) { if ( ! ctx -> adts_buffer_size ) { if ( ctx -> opid ) gf_filter_pid_set_eos ( ctx -> opid ) ; if ( ctx -> src_pck ) gf_filter_pck_unref ( ctx -> src_pck ) ; ctx -> src_pck = NULL ; return GF_EOS ; } } else { return GF_OK ; } } prev_pck_size = ctx -> adts_buffer_size ; if ( pck && ! ctx -> resume_from ) { data = ( char * ) gf_filter_pck_get_data ( pck , & pck_size ) ; if ( ! pck_size ) { gf_filter_pid_drop_packet ( ctx -> ipid ) ; return GF_OK ; } if ( ctx -> byte_offset != GF_FILTER_NO_BO ) { u64 byte_offset = gf_filter_pck_get_byte_offset ( pck ) ; if ( ! ctx -> adts_buffer_size ) { ctx -> byte_offset = byte_offset ; } else if ( ctx -> byte_offset + ctx -> adts_buffer_size != byte_offset ) { ctx -> byte_offset = GF_FILTER_NO_BO ; if ( ( byte_offset != GF_FILTER_NO_BO ) && ( byte_offset > ctx -> adts_buffer_size ) ) { ctx -> byte_offset = byte_offset - ctx -> adts_buffer_size ; } } } if ( ctx -> adts_buffer_size + pck_size > ctx -> adts_buffer_alloc ) { ctx -> adts_buffer_alloc = ctx -> adts_buffer_size + pck_size ; ctx -> adts_buffer = gf_realloc ( ctx -> adts_buffer , ctx -> adts_buffer_alloc ) ; } memcpy ( ctx -> adts_buffer + ctx -> adts_buffer_size , data , pck_size ) ; ctx -> adts_buffer_size += pck_size ; } if ( ctx -> timescale && pck ) { cts = gf_filter_pck_get_cts ( pck ) ; } if ( cts == GF_FILTER_NO_TS ) { prev_pck_size = 0 ; } remain = ctx -> adts_buffer_size ; start = ctx -> adts_buffer ; if ( ctx -> resume_from ) { start += ctx -> resume_from - 1 ; remain -= ctx -> resume_from - 1 ; ctx -> resume_from = 0 ; } while ( remain ) { u8 * sync ; u32 sync_pos , size , offset , bytes_to_drop = 0 , nb_blocks_per_frame ; if ( ! ctx -> tag_size && ( remain > 3 ) ) { if ( start [ 0 ] == 'I' && start [ 1 ] == 'D' && start [ 2 ] == '3' ) { if ( remain < 10 ) return GF_OK ; ctx -> tag_size = ( ( start [ 9 ] & 0x7f ) + ( ( start [ 8 ] & 0x7f ) << 7 ) + ( ( start [ 7 ] & 0x7f ) << 14 ) + ( ( start [ 6 ] & 0x7f ) << 21 ) ) ; bytes_to_drop = 10 ; if ( ctx -> id3_buffer_alloc < ctx -> tag_size + 10 ) { ctx -> id3_buffer = gf_realloc ( ctx -> id3_buffer , ctx -> tag_size + 10 ) ; ctx -> id3_buffer_alloc = ctx -> tag_size + 10 ; } memcpy ( ctx -> id3_buffer , start , 10 ) ; ctx -> id3_buffer_size = 10 ; goto drop_byte ; } } if ( ctx -> tag_size ) { if ( ctx -> tag_size > remain ) { bytes_to_drop = remain ; ctx -> tag_size -= remain ; } else { bytes_to_drop = ctx -> tag_size ; ctx -> tag_size = 0 ; } memcpy ( ctx -> id3_buffer + ctx -> id3_buffer_size , start , bytes_to_drop ) ; ctx -> id3_buffer_size += bytes_to_drop ; if ( ! ctx -> tag_size && ctx -> opid ) { id3dmx_flush ( filter , ctx -> id3_buffer , ctx -> id3_buffer_size , ctx -> opid , ctx -> expart ? & ctx -> vpid : NULL ) ; ctx -> id3_buffer_size = 0 ; } goto drop_byte ; } sync = memchr ( start , 0xFF , remain ) ; sync_pos = ( u32 ) ( sync ? sync - start : remain ) ; if ( remain - sync_pos < 7 ) { break ; } if ( ( sync [ 1 ] & 0xF0 ) != 0xF0 ) { GF_LOG ( ctx -> nb_frames ? GF_LOG_WARNING : GF_LOG_DEBUG , GF_LOG_PARSER , ( \"[ADTSDmx]<S2SV_blank>invalid<S2SV_blank>ADTS<S2SV_blank>sync<S2SV_blank>bytes,<S2SV_blank>resyncing\\\\n\" ) ) ; ctx -> nb_frames = 0 ; goto drop_byte ; } if ( ! ctx -> bs ) { ctx -> bs = gf_bs_new ( sync + 1 , remain - sync_pos - 1 , GF_BITSTREAM_READ ) ; } else { gf_bs_reassign_buffer ( ctx -> bs , sync + 1 , remain - sync_pos - 1 ) ; } gf_bs_read_int ( ctx -> bs , 4 ) ; ctx -> hdr . is_mp2 = ( Bool ) gf_bs_read_int ( ctx -> bs , 1 ) ; ctx -> hdr . is_mp2 = 0 ; gf_bs_read_int ( ctx -> bs , 2 ) ; ctx -> hdr . no_crc = ( Bool ) gf_bs_read_int ( ctx -> bs , 1 ) ; ctx -> hdr . profile = 1 + gf_bs_read_int ( ctx -> bs , 2 ) ; ctx -> hdr . sr_idx = gf_bs_read_int ( ctx -> bs , 4 ) ; gf_bs_read_int ( ctx -> bs , 1 ) ; ctx -> hdr . nb_ch = gf_bs_read_int ( ctx -> bs , 3 ) ; gf_bs_read_int ( ctx -> bs , 4 ) ; ctx -> hdr . frame_size = gf_bs_read_int ( ctx -> bs , 13 ) ; gf_bs_read_int ( ctx -> bs , 11 ) ; nb_blocks_per_frame = gf_bs_read_int ( ctx -> bs , 2 ) ; ctx -> hdr . hdr_size = 7 ; if ( ! ctx -> hdr . no_crc ) { u32 skip ; if ( ! nb_blocks_per_frame ) { skip = 2 ; } else { skip = 2 + 2 * nb_blocks_per_frame ; } ctx -> hdr . hdr_size += skip ; gf_bs_skip_bytes ( ctx -> bs , skip ) ; } if ( ! ctx -> hdr . frame_size || ! GF_M4ASampleRates [ ctx -> hdr . sr_idx ] ) { GF_LOG ( GF_LOG_DEBUG , GF_LOG_PARSER , ( \"[ADTSDmx]<S2SV_blank>Invalid<S2SV_blank>ADTS<S2SV_blank>frame<S2SV_blank>header,<S2SV_blank>resyncing\\\\n\" ) ) ; ctx -> nb_frames = 0 ; goto drop_byte ; } if ( ( nb_blocks_per_frame > 2 ) || ( nb_blocks_per_frame && ctx -> hdr . nb_ch ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_PARSER , ( \"[ADTSDmx]<S2SV_blank>Unsupported<S2SV_blank>multi-block<S2SV_blank>ADTS<S2SV_blank>frame<S2SV_blank>header<S2SV_blank>-<S2SV_blank>patch<S2SV_blank>welcome\\\\n\" ) ) ; ctx -> nb_frames = 0 ; goto drop_byte ; } else if ( ! nb_blocks_per_frame ) { if ( ctx -> aacchcfg < 0 ) ctx -> hdr . nb_ch = - ctx -> aacchcfg ; else if ( ! ctx -> hdr . nb_ch ) ctx -> hdr . nb_ch = ctx -> aacchcfg ; if ( ! ctx -> hdr . nb_ch ) { GF_LOG ( GF_LOG_WARNING , GF_LOG_PARSER , ( \"[ADTSDmx]<S2SV_blank>Missing<S2SV_blank>channel<S2SV_blank>configuration<S2SV_blank>in<S2SV_blank>ADTS<S2SV_blank>frame<S2SV_blank>header,<S2SV_blank>defaulting<S2SV_blank>to<S2SV_blank>stereo<S2SV_blank>-<S2SV_blank>use<S2SV_blank>`--aacchcfg`<S2SV_blank>to<S2SV_blank>force<S2SV_blank>config\\\\n\" ) ) ; ctx -> hdr . nb_ch = ctx -> aacchcfg = 2 ; } } if ( nb_blocks_per_frame == 2 ) { u32 pos = ( u32 ) gf_bs_get_position ( ctx -> bs ) ; gf_m4a_parse_program_config_element ( ctx -> bs , & ctx -> acfg ) ; if ( ! ctx -> hdr . no_crc ) gf_bs_skip_bytes ( ctx -> bs , 2 ) ; ctx -> hdr . hdr_size += ( u32 ) gf_bs_get_position ( ctx -> bs ) - pos ; } if ( ctx -> hdr . nb_ch == 7 ) ctx -> hdr . nb_ch = 8 ; if ( ctx -> hdr . frame_size + 1 < remain ) { u32 next_frame = ctx -> hdr . frame_size ; if ( ( sync [ next_frame ] != 0xFF ) || ( ( sync [ next_frame + 1 ] & 0xF0 ) != 0xF0 ) ) { GF_LOG ( ctx -> nb_frames ? GF_LOG_WARNING : GF_LOG_DEBUG , GF_LOG_PARSER , ( \"[ADTSDmx]<S2SV_blank>invalid<S2SV_blank>next<S2SV_blank>ADTS<S2SV_blank>frame<S2SV_blank>sync,<S2SV_blank>resyncing\\\\n\" ) ) ; ctx -> nb_frames = 0 ; goto drop_byte ; } } else if ( pck ) { if ( ctx -> timescale && ! prev_pck_size && ( cts != GF_FILTER_NO_TS ) ) { ctx -> cts = cts ; } break ; } <S2SV_StartBug> adts_dmx_check_pid ( filter , ctx ) ; <S2SV_EndBug> if ( ! ctx -> is_playing ) { ctx -> resume_from = 1 + ctx -> adts_buffer_size - remain ; return GF_OK ; } ctx -> nb_frames ++ ; size = ctx -> hdr . frame_size - ctx -> hdr . hdr_size ; offset = ctx -> hdr . hdr_size ; if ( ( nb_blocks_per_frame == 2 ) && ! ctx -> hdr . no_crc ) size -= 2 ; if ( ctx -> in_seek ) { u64 nb_samples_at_seek = ( u64 ) ( ctx -> start_range * GF_M4ASampleRates [ ctx -> sr_idx ] ) ; if ( ctx -> cts + ctx -> dts_inc >= nb_samples_at_seek ) { ctx -> in_seek = GF_FALSE ; } } bytes_to_drop = ctx -> hdr . frame_size ; if ( ctx -> timescale && ! prev_pck_size && ( cts != GF_FILTER_NO_TS ) ) { ctx -> cts = cts ; cts = GF_FILTER_NO_TS ; } if ( ! ctx -> in_seek ) { dst_pck = gf_filter_pck_new_alloc ( ctx -> opid , size , & output ) ; if ( ctx -> src_pck ) gf_filter_pck_merge_properties ( ctx -> src_pck , dst_pck ) ; memcpy ( output , sync + offset , size ) ; gf_filter_pck_set_dts ( dst_pck , ctx -> cts ) ; gf_filter_pck_set_cts ( dst_pck , ctx -> cts ) ; gf_filter_pck_set_duration ( dst_pck , ctx -> dts_inc ) ; gf_filter_pck_set_framing ( dst_pck , GF_TRUE , GF_TRUE ) ; gf_filter_pck_set_sap ( dst_pck , GF_FILTER_SAP_1 ) ; if ( ctx -> byte_offset != GF_FILTER_NO_BO ) { gf_filter_pck_set_byte_offset ( dst_pck , ctx -> byte_offset + ctx -> hdr . hdr_size ) ; } gf_filter_pck_send ( dst_pck ) ; } adts_dmx_update_cts ( ctx ) ; if ( bytes_to_drop > remain ) { GF_LOG ( GF_LOG_WARNING , GF_LOG_PARSER , ( \"[ADTSDmx]<S2SV_blank>truncated<S2SV_blank>ADTS<S2SV_blank>frame!\\\\n\" ) ) ; bytes_to_drop = remain ; } drop_byte : if ( ! bytes_to_drop ) { bytes_to_drop = 1 ; } start += bytes_to_drop ; remain -= bytes_to_drop ; if ( prev_pck_size ) { if ( prev_pck_size > bytes_to_drop ) prev_pck_size -= bytes_to_drop ; else { prev_pck_size = 0 ; if ( ctx -> src_pck ) gf_filter_pck_unref ( ctx -> src_pck ) ; ctx -> src_pck = pck ; if ( pck ) gf_filter_pck_ref_props ( & ctx -> src_pck ) ; } } if ( ctx -> byte_offset != GF_FILTER_NO_BO ) ctx -> byte_offset += bytes_to_drop ; } if ( ! pck ) { ctx -> adts_buffer_size = 0 ; return adts_dmx_process ( filter ) ; } else { if ( remain ) { memmove ( ctx -> adts_buffer , start , remain ) ; } ctx -> adts_buffer_size = remain ; gf_filter_pid_drop_packet ( ctx -> ipid ) ; } return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } if ( ctx -> hdr . frame_size < ctx -> hdr . hdr_size ) { GF_LOG ( GF_LOG_WARNING , GF_LOG_PARSER , ( \"[ADTSDmx]<S2SV_blank>Corrupted<S2SV_blank>ADTS<S2SV_blank>frame<S2SV_blank>header,<S2SV_blank>resyncing\\\\n\" ) ) ; ctx -> nb_frames = 0 ; goto drop_byte ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_rc_update_rate_correction_factors ( VP9_COMP * cpi , int damp_var ) { <S2SV_EndBug> const VP9_COMMON * const cm = & cpi -> common ; int correction_factor = 100 ; double rate_correction_factor = get_rate_correction_factor ( cpi ) ; double adjustment_limit ; int projected_size_based_on_q = 0 ; <S2SV_StartBug> vp9_clear_system_state ( ) ; <S2SV_EndBug> projected_size_based_on_q = estimate_bits_at_q ( cm -> frame_type , cm -> base_qindex , cm -> MBs , <S2SV_StartBug> rate_correction_factor ) ; <S2SV_EndBug> <S2SV_StartBug> if ( projected_size_based_on_q > 0 ) <S2SV_EndBug> correction_factor = ( 100 * cpi -> rc . projected_frame_size ) / projected_size_based_on_q ; switch ( damp_var ) { case 0 : adjustment_limit = 0.75 ; break ; case 1 : adjustment_limit = 0.375 ; break ; case 2 : default : adjustment_limit = 0.25 ; break ; } if ( correction_factor > 102 ) { correction_factor = ( int ) ( 100 + ( ( correction_factor - 100 ) * adjustment_limit ) ) ; rate_correction_factor = ( rate_correction_factor * correction_factor ) / 100 ; if ( rate_correction_factor > MAX_BPB_FACTOR ) rate_correction_factor = MAX_BPB_FACTOR ; } else if ( correction_factor < 99 ) { correction_factor = ( int ) ( 100 - ( ( 100 - correction_factor ) * adjustment_limit ) ) ; rate_correction_factor = ( rate_correction_factor * correction_factor ) / 100 ; if ( rate_correction_factor < MIN_BPB_FACTOR ) rate_correction_factor = MIN_BPB_FACTOR ; } set_rate_correction_factor ( cpi , rate_correction_factor ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VP9_COMP * cpi <S2SV_ModEnd> ) { const <S2SV_ModStart> = 0 ; if ( cpi -> rc . is_src_frame_alt_ref ) return ; vpx_clear_system_state ( ) ; if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ && cpi -> common . seg . enabled ) { projected_size_based_on_q = vp9_cyclic_refresh_estimate_bits_at_q ( cpi , rate_correction_factor ) ; } else { projected_size_based_on_q = vp9_estimate_bits_at_q ( cpi -> common . <S2SV_ModEnd> frame_type , cm <S2SV_ModStart> MBs , rate_correction_factor , cm -> bit_depth ) ; } <S2SV_ModEnd> if ( projected_size_based_on_q <S2SV_ModStart> ( projected_size_based_on_q > FRAME_OVERHEAD_BITS ) correction_factor = ( int ) ( ( 100 * ( int64_t ) cpi -> rc . projected_frame_size ) / projected_size_based_on_q ) ; adjustment_limit = 0.25 + 0.5 * MIN ( 1 , fabs ( log10 ( 0.01 * correction_factor ) ) ) ; cpi -> rc . q_2_frame = cpi -> rc . q_1_frame ; cpi -> rc . q_1_frame = cm -> base_qindex ; cpi -> rc . rc_2_frame = cpi -> rc . rc_1_frame ; if ( correction_factor > 110 ) cpi -> rc . rc_1_frame = - 1 ; else if ( correction_factor < 90 ) cpi -> rc . rc_1_frame = 1 ; else cpi -> rc . rc_1_frame = 0 ; <S2SV_ModEnd> if ( correction_factor\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-79(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20375\n\n```\nCWE-79 void interprete ( char * lbook , char * path ) { int status , i , j , n , message_id , inactive ; char list [ 1000 ] , section [ 256 ] , str [ NAME_LENGTH ] , str1 [ NAME_LENGTH ] , str2 [ NAME_LENGTH ] , edit_id [ 80 ] , file_name [ 256 ] , command [ 256 ] , enc_path [ 256 ] , dec_path [ 256 ] , uname [ 80 ] , full_name [ 256 ] , user_email [ 256 ] , logbook [ 256 ] , logbook_enc [ 256 ] , * experiment , group [ 256 ] , css [ 256 ] , * pfile , attachment [ MAX_PATH_LENGTH ] , str3 [ NAME_LENGTH ] , thumb_name [ 256 ] , sid [ 32 ] , error_str [ 256 ] , subdir [ 256 ] , * s ; LOGBOOK * lbs ; FILE * f ; strcpy ( dec_path , path ) ; url_decode ( dec_path ) ; strcpy ( enc_path , dec_path ) ; url_encode ( enc_path , sizeof ( enc_path ) ) ; strencode2 ( command , isparam ( \"cmd\" ) ? getparam ( \"cmd\" ) : \"\" , sizeof ( command ) ) ; strencode2 ( group , isparam ( \"group\" ) ? getparam ( \"group\" ) : \"\" , sizeof ( group ) ) ; experiment = getparam ( \"exp\" ) ; if ( getcfg ( lbook , \"Logging<S2SV_blank>Level\" , str , sizeof ( str ) ) ) _logging_level = atoi ( str ) ; else _logging_level = 2 ; set_condition ( \"\" ) ; message_id = atoi ( dec_path ) ; if ( isparam ( \"jcmd\" ) && * getparam ( \"jcmd\" ) ) strlcpy ( command , getparam ( \"jcmd\" ) , sizeof ( command ) ) ; if ( stricmp ( command , \"loc\" ) == 0 ) { show_http_header ( NULL , FALSE , NULL ) ; <S2SV_StartBug> if ( isparam ( \"value\" ) && * getparam ( \"value\" ) ) <S2SV_EndBug> <S2SV_StartBug> rsputs ( loc ( getparam ( \"value\" ) ) ) ; <S2SV_EndBug> s = loc ( \"Drop<S2SV_blank>attachments<S2SV_blank>here...\" ) ; s = loc ( \"Insert<S2SV_blank>Timestamp\" ) ; if ( s ) s = NULL ; return ; } if ( experiment && experiment [ 0 ] ) { strcpy ( logbook_enc , experiment ) ; strcpy ( logbook , experiment ) ; url_decode ( logbook ) ; for ( i = 0 ; ; i ++ ) { if ( ! enumgrp ( i , str ) ) break ; if ( strieq ( logbook , str ) ) break ; } if ( ! strieq ( logbook , str ) ) { sprintf ( str , \"Error:<S2SV_blank>logbook<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>not<S2SV_blank>defined<S2SV_blank>in<S2SV_blank>%s\" , logbook_enc , CFGFILE ) ; show_error ( str ) ; return ; } } else { strcpy ( logbook_enc , lbook ) ; strcpy ( logbook , lbook ) ; url_decode ( logbook ) ; } setcfg_topgroup ( \"\" ) ; sprintf ( str , \"Top<S2SV_blank>group<S2SV_blank>%s\" , logbook ) ; if ( getcfg ( \"global\" , str , list , sizeof ( list ) ) ) { setcfg_topgroup ( logbook ) ; logbook [ 0 ] = 0 ; } for ( i = j = 0 ; ; i ++ ) { if ( ! enumgrp ( i , str ) ) break ; if ( is_logbook ( str ) ) { if ( ! strieq ( str , lb_list [ j ++ ] . name ) ) { el_index_logbooks ( ) ; break ; } } } if ( lb_list [ j ] . name [ 0 ] != 0 ) el_index_logbooks ( ) ; if ( ! logbook [ 0 ] ) { if ( getcfg ( group , \"Self<S2SV_blank>register\" , str , sizeof ( str ) ) && atoi ( str ) > 0 ) { if ( ! do_self_register ( NULL , getparam ( \"cmd\" ) ) ) return ; } if ( strieq ( command , loc ( \"Activate\" ) ) && isparam ( \"new_user_name\" ) && isparam ( \"code\" ) ) { if ( ! activate_user ( NULL , getparam ( \"new_user_name\" ) , atoi ( getparam ( \"code\" ) ) ) ) return ; setparam ( \"cfg_user\" , getparam ( \"new_user_name\" ) ) ; get_user_line ( NULL , getparam ( \"new_user_name\" ) , NULL , full_name , user_email , NULL , NULL , NULL ) ; sprintf ( str , \"%s<S2SV_blank><b>&lt;%s&gt;</b>\" , full_name , user_email ) ; sprintf ( str2 , loc ( \"Activation<S2SV_blank>notice<S2SV_blank>has<S2SV_blank>been<S2SV_blank>sent<S2SV_blank>to<S2SV_blank>%s\" ) , str ) ; setparam ( \"notice\" , str2 ) ; show_config_page ( NULL ) ; return ; } if ( strieq ( command , loc ( \"Save\" ) ) ) { if ( isparam ( \"config\" ) ) { if ( ! isparam ( \"config\" ) || ! save_user_config ( NULL , getparam ( \"config\" ) , FALSE ) ) return ; } redirect ( NULL , \".\" ) ; return ; } if ( isparam ( \"cmd\" ) || isparam ( \"newpwd\" ) ) { if ( isparam ( \"newpwd\" ) || strieq ( command , loc ( \"Change<S2SV_blank>password\" ) ) ) { if ( sid_check ( getparam ( \"sid\" ) , uname ) ) setparam ( \"unm\" , uname ) ; show_change_pwd_page ( NULL ) ; return ; } } if ( isparam ( \"uname\" ) && isparam ( \"upassword\" ) ) { strlcpy ( uname , getparam ( \"uname\" ) , sizeof ( uname ) ) ; sprintf ( str , \"LOGIN<S2SV_blank>user<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>(attempt)<S2SV_blank>for<S2SV_blank>logbook<S2SV_blank>selection<S2SV_blank>page\" , uname ) ; write_logfile ( NULL , str ) ; if ( isparam ( \"redir\" ) ) strlcpy ( str , getparam ( \"redir\" ) , sizeof ( str ) ) ; else strlcpy ( str , isparam ( \"cmdline\" ) ? getparam ( \"cmdline\" ) : \"\" , sizeof ( str ) ) ; if ( ! auth_verify_password ( NULL , uname , getparam ( \"upassword\" ) , error_str , sizeof ( error_str ) ) ) { if ( error_str [ 0 ] ) show_error ( error_str ) ; else show_login_page ( NULL , str , 1 ) ; return ; } if ( get_user_line ( NULL , uname , NULL , full_name , NULL , NULL , NULL , NULL ) == 2 ) { if ( ! getcfg ( group , \"Self<S2SV_blank>register\" , str , sizeof ( str ) ) || atoi ( str ) == 0 ) { show_login_page ( NULL , str , 1 ) ; return ; } # ifdef HAVE_PAM getcfg ( NULL , \"Authentication\" , str , sizeof ( str ) ) ; if ( stristr ( str , \"PAM\" ) ) { show_new_user_page ( NULL , uname ) ; return ; } # endif } set_user_password ( NULL , uname , getparam ( \"upassword\" ) ) ; sprintf ( str , \"LOGIN<S2SV_blank>user<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>(success)\" , uname ) ; write_logfile ( NULL , str ) ; sid_new ( NULL , uname , ( char * ) inet_ntoa ( rem_addr ) , sid ) ; set_sid_cookie ( NULL , sid , full_name ) ; return ; } if ( ! logbook [ 0 ] && getcfg ( \"global\" , \"Selection<S2SV_blank>page\" , str , sizeof ( str ) ) ) { if ( strstr ( str , \"http://\" ) || strstr ( str , \"https://\" ) ) { redirect ( NULL , str ) ; return ; } if ( str [ 0 ] == DIR_SEPARATOR || str [ 1 ] == ':' ) strlcpy ( file_name , str , sizeof ( file_name ) ) ; else { strlcpy ( file_name , logbook_dir , sizeof ( file_name ) ) ; strlcat ( file_name , str , sizeof ( file_name ) ) ; } send_file_direct ( file_name ) ; return ; } if ( strieq ( command , \"Synchronize\" ) ) { synchronize ( NULL , SYNC_HTML ) ; return ; } } for ( n = 0 ; lb_list [ n ] . name [ 0 ] ; n ++ ) ; if ( ! logbook [ 0 ] && ! path [ 0 ] ) { if ( n > 1 ) { if ( strieq ( command , loc ( \"Forgot\" ) ) ) { show_forgot_pwd_page ( NULL ) ; return ; } show_selection_page ( ) ; return ; } strcpy ( logbook , lb_list [ 0 ] . name ) ; strcpy ( logbook_enc , logbook ) ; url_encode ( logbook_enc , sizeof ( logbook_enc ) ) ; } for ( i = 0 ; lb_list [ i ] . name [ 0 ] ; i ++ ) if ( strieq ( logbook , lb_list [ i ] . name ) ) break ; lbs = & lb_list [ i ] ; if ( lbs -> top_group [ 0 ] ) setcfg_topgroup ( lbs -> top_group ) ; if ( getcfg ( logbook , \"Theme\" , str , sizeof ( str ) ) ) strlcpy ( theme_name , str , sizeof ( theme_name ) ) ; else strlcpy ( theme_name , \"default\" , sizeof ( theme_name ) ) ; lbs = lb_list + i ; lbs -> n_attr = scan_attributes ( lbs -> name ) ; if ( lbs -> n_attr < 0 ) return ; if ( isparam ( \"acmd\" ) && * getparam ( \"acmd\" ) ) { if ( strieq ( getparam ( \"acmd\" ) , \"Upload\" ) ) show_uploader_json ( lbs ) ; return ; } getcfg ( lbs -> name , \"Authentication\" , str , sizeof ( str ) ) ; if ( stristr ( str , \"Webserver\" ) ) { if ( http_user [ 0 ] ) { if ( ! sid_check ( getparam ( \"sid\" ) , http_user ) ) { sid_new ( lbs , http_user , ( char * ) inet_ntoa ( rem_addr ) , sid ) ; set_sid_cookie ( lbs , sid , http_user ) ; } } else { sprintf ( str , \"Error:<S2SV_blank>Misconfigured<S2SV_blank>webserver,<S2SV_blank>did<S2SV_blank>not<S2SV_blank>get<S2SV_blank>X-Forwarded-User<S2SV_blank>from<S2SV_blank>it.\" ) ; show_error ( str ) ; return ; } } if ( isparam ( \"uname\" ) && isparam ( \"upassword\" ) ) { strlcpy ( uname , getparam ( \"uname\" ) , sizeof ( uname ) ) ; sprintf ( str , \"LOGIN<S2SV_blank>user<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>(attempt)\" , uname ) ; write_logfile ( lbs , str ) ; if ( isparam ( \"redir\" ) ) strlcpy ( str , getparam ( \"redir\" ) , sizeof ( str ) ) ; else strlcpy ( str , isparam ( \"cmdline\" ) ? getparam ( \"cmdline\" ) : \"\" , sizeof ( str ) ) ; if ( ! auth_verify_password ( lbs , uname , getparam ( \"upassword\" ) , error_str , sizeof ( error_str ) ) ) { if ( error_str [ 0 ] ) show_error ( error_str ) ; else show_login_page ( lbs , str , 1 ) ; return ; } if ( get_user_line ( lbs , uname , NULL , full_name , NULL , NULL , NULL , & inactive ) == 2 ) { if ( ! getcfg ( lbs -> name , \"Self<S2SV_blank>register\" , str , sizeof ( str ) ) || atoi ( str ) == 0 ) { show_login_page ( lbs , str , 1 ) ; return ; } # ifdef HAVE_PAM getcfg ( lbs -> name , \"Authentication\" , str , sizeof ( str ) ) ; if ( stristr ( str , \"PAM\" ) ) { show_new_user_page ( lbs , uname ) ; return ; } # endif } if ( inactive ) { show_error ( \"This<S2SV_blank>account<S2SV_blank>is<S2SV_blank>currently<S2SV_blank>deactivated\" ) ; return ; } if ( ! check_login_user ( lbs , getparam ( \"uname\" ) ) ) { show_error ( \"User<S2SV_blank>has<S2SV_blank>no<S2SV_blank>access<S2SV_blank>to<S2SV_blank>this<S2SV_blank>logbook\" ) ; return ; } set_user_password ( lbs , uname , getparam ( \"upassword\" ) ) ; sprintf ( str , \"LOGIN<S2SV_blank>user<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>(success)\" , uname ) ; write_logfile ( lbs , str ) ; sid_new ( lbs , uname , ( char * ) inet_ntoa ( rem_addr ) , sid ) ; set_sid_cookie ( lbs , sid , full_name ) ; return ; } if ( chkext ( path , \".gif\" ) || chkext ( path , \".jpg\" ) || chkext ( path , \".png\" ) || chkext ( path , \".ico\" ) || chkext ( path , \".htm\" ) || chkext ( path , \".css\" ) ) { strlcpy ( str , resource_dir , sizeof ( str ) ) ; strlcat ( str , path , sizeof ( str ) ) ; if ( exist_file ( str ) ) { send_file_direct ( str ) ; return ; } else { strlcpy ( str , resource_dir , sizeof ( str ) ) ; strlcat ( str , \"themes\" , sizeof ( str ) ) ; strlcat ( str , DIR_SEPARATOR_STR , sizeof ( str ) ) ; strlcat ( str , theme_name , sizeof ( str ) ) ; strlcat ( str , DIR_SEPARATOR_STR , sizeof ( str ) ) ; strlcat ( str , path , sizeof ( str ) ) ; if ( exist_file ( str ) ) { send_file_direct ( str ) ; return ; } } } if ( ! logbook [ 0 ] ) { strencode2 ( str2 , path , sizeof ( str2 ) ) ; sprintf ( str , \"%s:<S2SV_blank><b>%s</b>\" , loc ( \"Invalid<S2SV_blank>URL\" ) , str2 ) ; show_error ( str ) ; return ; } if ( strieq ( command , loc ( \"Activate\" ) ) && isparam ( \"unm\" ) && isparam ( \"code\" ) && ! isparam ( \"new_user_name\" ) ) { strlcpy ( uname , getparam ( \"unm\" ) , sizeof ( uname ) ) ; if ( ! activate_user ( lbs , uname , atoi ( getparam ( \"code\" ) ) ) ) return ; sprintf ( str , \"ACTIVATE<S2SV_blank>user<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>(success)\" , uname ) ; write_logfile ( lbs , str ) ; sid_new ( lbs , uname , ( char * ) inet_ntoa ( rem_addr ) , sid ) ; sprintf ( str , \"?cmd=%s&notice=%s.<S2SV_blank>%s\" , loc ( \"Config\" ) , loc ( \"Your<S2SV_blank>account<S2SV_blank>has<S2SV_blank>been<S2SV_blank>activated\" ) , loc ( \"Please<S2SV_blank>subscribe<S2SV_blank>to<S2SV_blank>logbooks<S2SV_blank>if<S2SV_blank>you<S2SV_blank>want<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>automatic<S2SV_blank>email<S2SV_blank>notifications\" ) ) ; setparam ( \"redir\" , str ) ; set_sid_cookie ( lbs , sid , uname ) ; return ; } # ifdef HAVE_PAM if ( strieq ( command , loc ( \"Save\" ) ) && isparam ( \"new_user_name\" ) && ! isparam ( \"config\" ) ) { save_user_config ( NULL , getparam ( \"new_user_name\" ) , 1 ) ; redirect ( lbs , \"\" ) ; check_login ( lbs , NULL ) ; return ; } # endif if ( getcfg ( lbs -> name , \"Password<S2SV_blank>file\" , str , sizeof ( str ) ) ) { strlcpy ( css , \"elog.css\" , sizeof ( css ) ) ; if ( lbs != NULL && getcfg ( lbs -> name , \"CSS\" , str , sizeof ( str ) ) ) strlcpy ( css , str , sizeof ( css ) ) ; else if ( lbs == NULL && getcfg ( \"global\" , \"CSS\" , str , sizeof ( str ) ) ) strlcpy ( css , str , sizeof ( css ) ) ; if ( getcfg ( lbs -> name , \"Guest<S2SV_blank>menu<S2SV_blank>commands\" , str , sizeof ( str ) ) ) { if ( sid_check ( getparam ( \"sid\" ) , uname ) ) setparam ( \"unm\" , uname ) ; } if ( uname [ 0 ] && ! isparam ( \"new_user_name\" ) ) { if ( ! set_user_login_time ( lbs , uname ) ) { show_error ( loc ( \"File<S2SV_blank>system<S2SV_blank>full,<S2SV_blank>ELOG<S2SV_blank>cannot<S2SV_blank>continue<S2SV_blank>to<S2SV_blank>work\" ) ) ; return ; } } if ( ! ( getcfg ( lbs -> name , \"Guest<S2SV_blank>menu<S2SV_blank>commands\" , str , sizeof ( str ) ) && ! isparam ( \"fail\" ) ) ) { if ( strcmp ( path , css ) != 0 ) { if ( getcfg ( lbs -> name , \"Self<S2SV_blank>register\" , str , sizeof ( str ) ) && atoi ( str ) > 0 ) { if ( ! do_self_register ( lbs , command ) ) return ; } if ( ! check_login ( lbs , getparam ( \"sid\" ) ) ) return ; } } } if ( strieq ( command , loc ( \"Login\" ) ) ) { check_login ( lbs , \"\" ) ; return ; } if ( strieq ( command , loc ( \"New\" ) ) || strieq ( command , loc ( \"Edit\" ) ) || strieq ( command , loc ( \"Reply\" ) ) || strieq ( command , loc ( \"Duplicate\" ) ) || strieq ( command , loc ( \"Delete\" ) ) || strieq ( command , loc ( \"Upload\" ) ) || strieq ( command , loc ( \"Submit\" ) ) || strieq ( command , loc ( \"Preview\" ) ) ) { sprintf ( str , \"%s?cmd=%s\" , path , command ) ; } if ( strieq ( command , loc ( \"Delete\" ) ) || strieq ( command , loc ( \"Config\" ) ) || strieq ( command , loc ( \"Copy<S2SV_blank>to\" ) ) || strieq ( command , loc ( \"Move<S2SV_blank>to\" ) ) ) { sprintf ( str , \"%s?cmd=%s\" , path , command ) ; } if ( strieq ( command , loc ( \"Back\" ) ) ) { if ( isparam ( \"edit_id\" ) ) { el_lock_message ( lbs , atoi ( getparam ( \"edit_id\" ) ) , NULL , FALSE ) ; el_draft_message ( lbs , atoi ( getparam ( \"edit_id\" ) ) , NULL , FALSE ) ; strlcpy ( edit_id , getparam ( \"edit_id\" ) , sizeof ( edit_id ) ) ; sprintf ( str , \"../%s/%s\" , logbook_enc , edit_id ) ; } else sprintf ( str , \"../%s/\" , logbook_enc ) ; if ( getcfg ( lbs -> name , \"Back<S2SV_blank>to<S2SV_blank>main\" , str , sizeof ( str ) ) && atoi ( str ) == 1 ) strcpy ( str , \"../\" ) ; redirect ( lbs , str ) ; return ; } if ( strieq ( command , \"XDelete\" ) ) { if ( getparam ( \"edit_id\" ) ) { status = el_delete_message ( lbs , atoi ( getparam ( \"edit_id\" ) ) , TRUE , NULL , TRUE , TRUE ) ; if ( status != EL_SUCCESS ) { sprintf ( str , \"%s<S2SV_blank>=<S2SV_blank>%d\" , loc ( \"Error<S2SV_blank>deleting<S2SV_blank>message:<S2SV_blank>status\" ) , status ) ; show_error ( str ) ; return ; } } redirect ( lbs , \"\" ) ; return ; } if ( strieq ( command , \"Unlock\" ) ) { if ( isparam ( \"edit_id\" ) ) { el_lock_message ( lbs , atoi ( getparam ( \"edit_id\" ) ) , NULL , FALSE ) ; strlcpy ( edit_id , getparam ( \"edit_id\" ) , sizeof ( edit_id ) ) ; sprintf ( str , \"../%s/%s\" , logbook_enc , edit_id ) ; } else sprintf ( str , \"../%s/\" , logbook_enc ) ; if ( getcfg ( lbs -> name , \"Back<S2SV_blank>to<S2SV_blank>main\" , str , sizeof ( str ) ) && atoi ( str ) == 1 ) strcpy ( str , \"../\" ) ; redirect ( lbs , str ) ; return ; } if ( strieq ( command , loc ( \"List\" ) ) ) { if ( getcfg ( lbs -> name , \"Back<S2SV_blank>to<S2SV_blank>main\" , str , sizeof ( str ) ) && atoi ( str ) == 1 ) { redirect ( lbs , \"../\" ) ; return ; } show_elog_list ( lbs , 0 , 0 , 0 , TRUE , NULL ) ; return ; } if ( strieq ( command , loc ( \"Cancel\" ) ) ) { sprintf ( str , \"../%s/%s\" , logbook_enc , path ) ; redirect ( lbs , str ) ; return ; } strlcpy ( str , isparam ( \"last\" ) ? getparam ( \"last\" ) : \"\" , sizeof ( str ) ) ; if ( strchr ( str , '<S2SV_blank>' ) ) { i = atoi ( strchr ( str , '<S2SV_blank>' ) ) ; sprintf ( str , \"last%d\" , i ) ; if ( isparam ( \"mode\" ) ) { sprintf ( str + strlen ( str ) , \"?mode=\" ) ; strlcat ( str , getparam ( \"mode\" ) , sizeof ( str ) ) ; } redirect ( lbs , str ) ; return ; } strlcpy ( str , isparam ( \"past\" ) ? getparam ( \"past\" ) : \"\" , sizeof ( str ) ) ; if ( strchr ( str , '<S2SV_blank>' ) ) { i = atoi ( strchr ( str , '<S2SV_blank>' ) ) ; sprintf ( str , \"past%d\" , i ) ; redirect ( lbs , str ) ; return ; } if ( strncmp ( path , \"past\" , 4 ) == 0 && ( isdigit ( path [ 4 ] ) || isdigit ( path [ 5 ] ) ) && isparam ( \"cmd\" ) == 0 ) { show_elog_list ( lbs , atoi ( path + 4 ) , 0 , 0 , FALSE , NULL ) ; return ; } if ( strncmp ( path , \"last\" , 4 ) == 0 && ! chkext ( path , \".png\" ) && ( ! isparam ( \"cmd\" ) || strieq ( getparam ( \"cmd\" ) , loc ( \"Select\" ) ) ) && ! isparam ( \"newpwd\" ) && atoi ( path + 4 ) > 0 ) { show_elog_list ( lbs , 0 , atoi ( path + 4 ) , 0 , FALSE , NULL ) ; return ; } if ( strncmp ( path , \"page\" , 4 ) == 0 && isparam ( \"cmd\" ) == 0 ) { if ( ! path [ 4 ] ) show_elog_list ( lbs , 0 , 0 , - 1 , FALSE , NULL ) ; else show_elog_list ( lbs , 0 , 0 , atoi ( path + 4 ) , FALSE , NULL ) ; return ; } if ( strieq ( dec_path , \"cal.html\" ) ) { show_calendar ( lbs ) ; return ; } if ( strieq ( dec_path , \"elog.rdf\" ) ) { show_rss_feed ( lbs ) ; return ; } if ( strieq ( dec_path , \"upload.html\" ) ) { show_uploader ( lbs ) ; return ; } if ( isparam ( \"jcmd\" ) && isparam ( \"jcmd\" ) && strieq ( getparam ( \"jcmd\" ) , \"JUpload\" ) ) { show_uploader_finished ( lbs ) ; return ; } pfile = dec_path ; if ( strchr ( pfile , '/' ) && pfile [ 13 ] != '/' && isdigit ( pfile [ 0 ] ) ) pfile = strchr ( pfile , '/' ) + 1 ; if ( ( strlen ( pfile ) > 13 && pfile [ 6 ] == '_' && pfile [ 13 ] == '_' ) || ( strlen ( pfile ) > 13 && pfile [ 6 ] == '_' && pfile [ 13 ] == '/' ) || chkext ( pfile , \".gif\" ) || chkext ( pfile , \".ico\" ) || chkext ( pfile , \".jpg\" ) || chkext ( pfile , \".jpeg\" ) || chkext ( pfile , \".png\" ) || chkext ( pfile , \".css\" ) || chkext ( pfile , \".js\" ) || chkext ( pfile , \".html\" ) ) { if ( ( strlen ( pfile ) > 13 && pfile [ 6 ] == '_' && pfile [ 13 ] == '_' ) || ( strlen ( pfile ) > 13 && pfile [ 6 ] == '_' && pfile [ 13 ] == '/' ) ) { if ( pfile [ 13 ] == '/' ) pfile [ 13 ] = '_' ; strlcpy ( file_name , lbs -> data_dir , sizeof ( file_name ) ) ; generate_subdir_name ( pfile , subdir , sizeof ( subdir ) ) ; strlcat ( file_name , subdir , sizeof ( file_name ) ) ; strlcat ( file_name , pfile , sizeof ( file_name ) ) ; } else { strlcpy ( file_name , resource_dir , sizeof ( file_name ) ) ; if ( file_name [ 0 ] && file_name [ strlen ( file_name ) - 1 ] != DIR_SEPARATOR ) strlcat ( file_name , DIR_SEPARATOR_STR , sizeof ( file_name ) ) ; strlcat ( file_name , \"themes\" , sizeof ( file_name ) ) ; strlcat ( file_name , DIR_SEPARATOR_STR , sizeof ( file_name ) ) ; if ( theme_name [ 0 ] ) { strlcat ( file_name , theme_name , sizeof ( file_name ) ) ; strlcat ( file_name , DIR_SEPARATOR_STR , sizeof ( file_name ) ) ; } strlcat ( file_name , pfile , sizeof ( file_name ) ) ; } if ( isparam ( \"thumb\" ) ) { get_thumb_name ( file_name , thumb_name , sizeof ( thumb_name ) , 0 ) ; if ( thumb_name [ 0 ] ) send_file_direct ( thumb_name ) ; else send_file_direct ( file_name ) ; } else send_file_direct ( file_name ) ; return ; } if ( ! logbook [ 0 ] ) { show_selection_page ( ) ; return ; } if ( strchr ( dec_path , '/' ) ) { message_id = atoi ( dec_path ) ; n = atoi ( strchr ( dec_path , '/' ) + 1 ) - 1 ; status = el_retrieve_attachment ( lbs , message_id , n , attachment ) ; if ( status != EL_SUCCESS || n >= MAX_ATTACHMENTS ) { sprintf ( str , \"Attachment<S2SV_blank>#%d<S2SV_blank>of<S2SV_blank>entry<S2SV_blank>#%d<S2SV_blank>not<S2SV_blank>found\" , n + 1 , message_id ) ; show_error ( str ) ; } else { if ( isparam ( \"thumb\" ) ) strlcat ( attachment , \"?thumb=1\" , sizeof ( attachment ) ) ; redirect ( lbs , attachment ) ; } return ; } if ( getcfg ( lbs -> name , \"Types\" , str , sizeof ( str ) ) ) { show_upgrade_page ( lbs ) ; return ; } if ( isparam ( \"cmd_first.x\" ) ) strcpy ( command , loc ( \"First\" ) ) ; if ( isparam ( \"cmd_previous.x\" ) ) strcpy ( command , loc ( \"Previous\" ) ) ; if ( isparam ( \"cmd_next.x\" ) ) strcpy ( command , loc ( \"Next\" ) ) ; if ( isparam ( \"cmd_last.x\" ) ) strcpy ( command , loc ( \"Last\" ) ) ; if ( command [ 0 ] && ! is_user_allowed ( lbs , command ) ) { if ( isparam ( \"uname\" ) ) get_full_name ( lbs , getparam ( \"uname\" ) , full_name ) ; else full_name [ 0 ] = 0 ; strencode2 ( str2 , command , sizeof ( str2 ) ) ; strencode2 ( str3 , full_name , sizeof ( str3 ) ) ; sprintf ( str , loc ( \"Error:<S2SV_blank>Command<S2SV_blank>\\\\\"<b>%s</b>\\\\\"<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>for<S2SV_blank>user<S2SV_blank>\\\\\"<b>%s</b>\\\\\"\" ) , str2 , str3 ) ; show_error ( str ) ; return ; } if ( ! is_command_allowed ( lbs , command , message_id ) ) { if ( strieq ( command , loc ( \"New\" ) ) && ! isparam ( \"unm\" ) ) { show_login_page ( lbs , _cmdline , 0 ) ; return ; } strencode2 ( str2 , command , sizeof ( str3 ) ) ; sprintf ( str , loc ( \"Error:<S2SV_blank>Command<S2SV_blank>\\\\\"<b>%s</b>\\\\\"<S2SV_blank>not<S2SV_blank>allowed\" ) , str2 ) ; show_error ( str ) ; return ; } if ( strieq ( command , loc ( \"Help\" ) ) ) { if ( getcfg ( lbs -> name , \"Help<S2SV_blank>URL\" , str , sizeof ( str ) ) ) { if ( strstr ( str , \"http://\" ) || strstr ( str , \"https://\" ) ) { redirect ( lbs , str ) ; return ; } strlcpy ( file_name , resource_dir , sizeof ( file_name ) ) ; strlcat ( file_name , \"resources\" , sizeof ( file_name ) ) ; strlcat ( file_name , DIR_SEPARATOR_STR , sizeof ( file_name ) ) ; strlcat ( file_name , str , sizeof ( file_name ) ) ; f = fopen ( file_name , \"r\" ) ; if ( f == NULL ) { sprintf ( str , \"Cannot<S2SV_blank>find<S2SV_blank>file<S2SV_blank>\\\\\"%s\\\\\"\" , file_name ) ; show_error ( str ) ; } else { fclose ( f ) ; send_file_direct ( file_name ) ; } return ; } strlcpy ( file_name , resource_dir , sizeof ( file_name ) ) ; strlcat ( file_name , \"resources\" , sizeof ( file_name ) ) ; strlcat ( file_name , DIR_SEPARATOR_STR , sizeof ( file_name ) ) ; strlcat ( file_name , \"eloghelp_\" , sizeof ( file_name ) ) ; if ( getcfg ( \"global\" , \"Language\" , str , sizeof ( str ) ) ) { for ( i = 0 ; i < ( int ) strlen ( str ) ; i ++ ) str [ i ] = my_tolower ( str [ i ] ) ; strlcat ( file_name , str , sizeof ( file_name ) ) ; } else strlcat ( file_name , \"english\" , sizeof ( file_name ) ) ; strlcat ( file_name , \".html\" , sizeof ( file_name ) ) ; f = fopen ( file_name , \"r\" ) ; if ( f == NULL ) redirect ( lbs , \"https://elog.psi.ch/elog/eloghelp_english.html\" ) ; else { fclose ( f ) ; send_file_direct ( file_name ) ; } return ; } if ( strieq ( command , loc ( \"HelpELCode\" ) ) ) { strlcpy ( file_name , resource_dir , sizeof ( file_name ) ) ; strlcat ( file_name , \"resources\" , sizeof ( file_name ) ) ; strlcat ( file_name , DIR_SEPARATOR_STR , sizeof ( file_name ) ) ; strlcat ( file_name , \"elcode_\" , sizeof ( file_name ) ) ; if ( getcfg ( \"global\" , \"Language\" , str , sizeof ( str ) ) ) { for ( i = 0 ; i < ( int ) strlen ( str ) ; i ++ ) str [ i ] = my_tolower ( str [ i ] ) ; strlcat ( file_name , str , sizeof ( file_name ) ) ; } else strlcat ( file_name , \"english\" , sizeof ( file_name ) ) ; strlcat ( file_name , \".html\" , sizeof ( file_name ) ) ; f = fopen ( file_name , \"r\" ) ; if ( f == NULL ) redirect ( lbs , \"https://elog.psi.ch/elog/elcode_english.html\" ) ; else { fclose ( f ) ; send_file_direct ( file_name ) ; } return ; } if ( strieq ( command , loc ( \"New\" ) ) ) { if ( check_drafts ( lbs ) ) return ; show_edit_form ( lbs , 0 , FALSE , FALSE , FALSE , FALSE , FALSE , FALSE ) ; return ; } for ( i = 0 ; i < MAX_ATTACHMENTS ; i ++ ) { sprintf ( str , \"delatt%d\" , i ) ; if ( isparam ( str ) || ( isparam ( \"smcmd\" ) && stricmp ( getparam ( \"smcmd\" ) , str ) == 0 ) ) { sprintf ( str , \"attachment%d\" , i ) ; strlcpy ( file_name , getparam ( str ) , sizeof ( file_name ) ) ; el_delete_attachment ( lbs , file_name ) ; for ( j = i ; j < MAX_ATTACHMENTS ; j ++ ) { sprintf ( str , \"attachment%d\" , j + 1 ) ; if ( isparam ( str ) ) strlcpy ( file_name , getparam ( str ) , sizeof ( file_name ) ) ; else file_name [ 0 ] = 0 ; sprintf ( str , \"attachment%d\" , j ) ; if ( file_name [ 0 ] ) setparam ( str , file_name ) ; else unsetparam ( str ) ; } show_edit_form ( lbs , isparam ( \"edit_id\" ) ? atoi ( getparam ( \"edit_id\" ) ) : 0 , FALSE , TRUE , TRUE , FALSE , FALSE , FALSE ) ; return ; } } if ( strieq ( command , loc ( \"Upload\" ) ) || strieq ( command , \"Upload\" ) ) { show_edit_form ( lbs , isparam ( \"edit_id\" ) ? atoi ( getparam ( \"edit_id\" ) ) : 0 , FALSE , TRUE , TRUE , FALSE , FALSE , FALSE ) ; return ; } if ( strieq ( command , loc ( \"Edit\" ) ) ) { if ( message_id ) { show_edit_form ( lbs , message_id , FALSE , TRUE , FALSE , FALSE , FALSE , FALSE ) ; return ; } else if ( isparam ( \"nsel\" ) ) { show_edit_form ( lbs , 0 , FALSE , TRUE , FALSE , FALSE , FALSE , FALSE ) ; return ; } } if ( strieq ( command , loc ( \"Reply\" ) ) ) { show_edit_form ( lbs , message_id , TRUE , FALSE , FALSE , FALSE , FALSE , FALSE ) ; return ; } if ( strieq ( command , loc ( \"Update\" ) ) ) { show_edit_form ( lbs , isparam ( \"edit_id\" ) ? atoi ( getparam ( \"edit_id\" ) ) : 0 , FALSE , TRUE , FALSE , TRUE , FALSE , FALSE ) ; return ; } if ( ( strieq ( command , loc ( \"Save\" ) ) || strieq ( command , \"Save\" ) ) && ! isparam ( \"cfgpage\" ) && ! isparam ( \"new_user_name\" ) ) { if ( isparam ( \"unm\" ) ) strlcpy ( str , getparam ( \"unm\" ) , sizeof ( str ) ) ; else strlcpy ( str , loc ( \"user\" ) , sizeof ( str ) ) ; setparam ( \"draft\" , str ) ; submit_elog ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Duplicate\" ) ) ) { if ( message_id ) { show_edit_form ( lbs , message_id , FALSE , FALSE , FALSE , FALSE , TRUE , FALSE ) ; return ; } } if ( strieq ( command , loc ( \"Preview\" ) ) ) { show_edit_form ( lbs , isparam ( \"edit_id\" ) ? atoi ( getparam ( \"edit_id\" ) ) : 0 , FALSE , TRUE , FALSE , TRUE , FALSE , TRUE ) ; return ; } if ( strieq ( command , loc ( \"Submit\" ) ) || strieq ( command , \"Submit\" ) ) { if ( isparam ( \"mirror_id\" ) ) submit_elog_mirror ( lbs ) ; else submit_elog ( lbs ) ; if ( isparam ( \"sidclose\" ) ) sid_remove ( getparam ( \"sid\" ) ) ; return ; } if ( strieq ( command , loc ( \"Find\" ) ) ) { if ( dec_path [ 0 ] ) { sprintf ( str , \"../%s/?cmd=%s\" , lbs -> name_enc , loc ( \"Find\" ) ) ; redirect ( lbs , str ) ; return ; } show_find_form ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Search\" ) ) ) { if ( dec_path [ 0 ] && atoi ( dec_path ) == 0 && strchr ( dec_path , '/' ) != NULL ) { strencode2 ( str2 , dec_path , sizeof ( str2 ) ) ; sprintf ( str , \"%s:<S2SV_blank><b>%s</b>\" , loc ( \"Invalid<S2SV_blank>URL\" ) , str2 ) ; show_error ( str ) ; return ; } show_elog_list ( lbs , 0 , 0 , 0 , TRUE , NULL ) ; return ; } if ( strieq ( command , loc ( \"Last<S2SV_blank>day\" ) ) ) { redirect ( lbs , \"past1\" ) ; return ; } if ( strieq ( command , loc ( \"Last<S2SV_blank>10\" ) ) ) { redirect ( lbs , \"last10\" ) ; return ; } if ( strieq ( command , loc ( \"Copy<S2SV_blank>to\" ) ) ) { copy_to ( lbs , message_id , isparam ( \"destc\" ) ? getparam ( \"destc\" ) : \"\" , 0 , 0 ) ; return ; } if ( strieq ( command , loc ( \"Move<S2SV_blank>to\" ) ) ) { copy_to ( lbs , message_id , isparam ( \"destm\" ) ? getparam ( \"destm\" ) : \"\" , 1 , 0 ) ; return ; } if ( strieq ( command , loc ( \"Admin\" ) ) || strieq ( command , loc ( \"Change<S2SV_blank>config<S2SV_blank>file\" ) ) ) { show_admin_page ( lbs , NULL ) ; return ; } sprintf ( str , loc ( \"Change<S2SV_blank>%s\" ) , \"[global]\" ) ; if ( strieq ( command , str ) ) { show_admin_page ( lbs , \"global\" ) ; return ; } sprintf ( str2 , \"[global<S2SV_blank>%s]\" , lbs -> top_group ) ; sprintf ( str , loc ( \"Change<S2SV_blank>%s\" ) , str2 ) ; if ( strieq ( command , str ) ) { show_admin_page ( lbs , lbs -> top_group ) ; return ; } if ( strieq ( command , loc ( \"Delete<S2SV_blank>this<S2SV_blank>logbook\" ) ) ) { show_logbook_delete ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Rename<S2SV_blank>this<S2SV_blank>logbook\" ) ) ) { show_logbook_rename ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Create<S2SV_blank>new<S2SV_blank>logbook\" ) ) ) { if ( isparam ( \"tmp\" ) && strieq ( getparam ( \"tmp\" ) , \"Cancel\" ) ) { if ( getcfg ( lbs -> name , \"Password<S2SV_blank>file\" , str , sizeof ( str ) ) ) sprintf ( str , \"?cmd=%s\" , loc ( \"Change<S2SV_blank>config<S2SV_blank>file\" ) ) ; else sprintf ( str , \"?cmd=%s\" , loc ( \"Config\" ) ) ; redirect ( lbs , str ) ; return ; } show_logbook_new ( lbs ) ; return ; } if ( strieq ( command , \"GetPwdFile\" ) ) { char allow [ 256 ] ; allow [ 0 ] = 0 ; getcfg ( \"global\" , \"Allow<S2SV_blank>clone\" , allow , sizeof ( allow ) ) ; if ( atoi ( allow ) == 1 ) { if ( get_password_file ( lbs , file_name , sizeof ( file_name ) ) ) send_file_direct ( file_name ) ; } else { show_http_header ( NULL , FALSE , NULL ) ; rsputs ( loc ( \"Cloning<S2SV_blank>not<S2SV_blank>allowed.<S2SV_blank>Set<S2SV_blank>\\\\\"Allow<S2SV_blank>clone<S2SV_blank>=<S2SV_blank>1\\\\\"<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>cloning.\" ) ) ; rsputs ( \"\\\\r\\\\n\" ) ; return ; } return ; } if ( strieq ( command , loc ( \"Change<S2SV_blank>password\" ) ) || ( isparam ( \"newpwd\" ) && ! strieq ( command , loc ( \"Cancel\" ) ) && ! strieq ( command , loc ( \"Save\" ) ) ) ) { show_change_pwd_page ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Save\" ) ) && ( isparam ( \"cfgpage\" ) || isparam ( \"new_user_name\" ) ) ) { if ( isparam ( \"config\" ) && isparam ( \"new_user_name\" ) ) { if ( ! strieq ( getparam ( \"config\" ) , getparam ( \"new_user_name\" ) ) ) { if ( get_user_line ( lbs , getparam ( \"new_user_name\" ) , NULL , NULL , NULL , NULL , NULL , NULL ) == 1 ) { sprintf ( str , \"%s<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>%s\" , loc ( \"Login<S2SV_blank>name\" ) , getparam ( \"new_user_name\" ) , loc ( \"exists<S2SV_blank>already\" ) ) ; show_error ( str ) ; return ; } } if ( ! save_user_config ( lbs , isparam ( \"config\" ) ? getparam ( \"config\" ) : \"\" , FALSE ) ) return ; redirect ( lbs , \"\" ) ; return ; } else if ( isparam ( \"new_user_name\" ) ) { if ( ! save_user_config ( lbs , getparam ( \"new_user_name\" ) , TRUE ) ) return ; } else { if ( isparam ( \"global\" ) ) { if ( strieq ( getparam ( \"global\" ) , \"global\" ) ) strcpy ( section , \"global\" ) ; else { sprintf ( section , \"global<S2SV_blank>\" ) ; strlcat ( section , getparam ( \"global\" ) , sizeof ( section ) ) ; } } else strlcpy ( section , lbs -> name , sizeof ( section ) ) ; if ( ! save_admin_config ( section , _mtext , str ) ) { show_error ( str ) ; return ; } } if ( lbs ) sprintf ( str , \"../%s/\" , lbs -> name_enc ) ; else sprintf ( str , \".\" ) ; if ( isparam ( \"new_user_name\" ) ) { sprintf ( str + strlen ( str ) , \"?cmd=%s&cfg_user=\" , loc ( \"Config\" ) ) ; strlcat ( str , getparam ( \"new_user_name\" ) , sizeof ( str ) ) ; } else if ( isparam ( \"cfg_user\" ) ) { sprintf ( str + strlen ( str ) , \"?cmd=%s&cfg_user=\" , loc ( \"Config\" ) ) ; strlcat ( str , getparam ( \"cfg_user\" ) , sizeof ( str ) ) ; } else if ( getcfg ( lbs -> name , \"password<S2SV_blank>file\" , str2 , sizeof ( str2 ) ) ) sprintf ( str + strlen ( str ) , \"?cmd=%s\" , loc ( \"Config\" ) ) ; redirect ( lbs , str ) ; return ; } if ( strieq ( command , loc ( \"Activate\" ) ) && isparam ( \"new_user_name\" ) && isparam ( \"code\" ) ) { if ( ! activate_user ( lbs , getparam ( \"new_user_name\" ) , atoi ( getparam ( \"code\" ) ) ) ) return ; setparam ( \"cfg_user\" , getparam ( \"new_user_name\" ) ) ; get_user_line ( lbs , getparam ( \"new_user_name\" ) , NULL , full_name , user_email , NULL , NULL , NULL ) ; sprintf ( str , \"%s<S2SV_blank><b>&lt;%s&gt;</b>\" , full_name , user_email ) ; sprintf ( str2 , loc ( \"Activation<S2SV_blank>notice<S2SV_blank>has<S2SV_blank>been<S2SV_blank>sent<S2SV_blank>to<S2SV_blank>%s\" ) , str ) ; setparam ( \"notice\" , str2 ) ; show_config_page ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Remove<S2SV_blank>user\" ) ) && isparam ( \"config\" ) ) { if ( ! remove_user ( lbs , getparam ( \"config\" ) ) ) return ; if ( isparam ( \"unm\" ) && strieq ( getparam ( \"config\" ) , getparam ( \"unm\" ) ) ) { write_logfile ( lbs , \"LOGOUT\" ) ; sid_remove ( getparam ( \"sid\" ) ) ; set_sid_cookie ( lbs , \"\" , \"\" ) ; } unsetparam ( \"cfg_user\" ) ; show_config_page ( lbs ) ; return ; } if ( strieq ( command , loc ( \"New<S2SV_blank>user\" ) ) ) { show_new_user_page ( lbs , NULL ) ; return ; } if ( strieq ( command , loc ( \"Forgot\" ) ) ) { show_forgot_pwd_page ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Config\" ) ) ) { if ( ! getcfg ( lbs -> name , \"Password<S2SV_blank>file\" , str , sizeof ( str ) ) ) show_admin_page ( lbs , NULL ) ; else show_config_page ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Download\" ) ) || strieq ( command , \"Download\" ) ) { show_download_page ( lbs , dec_path ) ; return ; } if ( strieq ( command , loc ( \"Import\" ) ) ) { strcpy ( str , loc ( \"CSV<S2SV_blank>Import\" ) ) ; url_encode ( str , sizeof ( str ) ) ; sprintf ( str1 , \"?cmd=%s\" , str ) ; strcpy ( str , loc ( \"XML<S2SV_blank>Import\" ) ) ; url_encode ( str , sizeof ( str ) ) ; sprintf ( str2 , \"?cmd=%s\" , str ) ; show_query ( lbs , loc ( \"ELOG<S2SV_blank>import\" ) , loc ( \"Please<S2SV_blank>choose<S2SV_blank>format<S2SV_blank>to<S2SV_blank>import:\" ) , \"CSV\" , str1 , \"XML\" , str2 ) ; return ; } if ( strieq ( command , loc ( \"CSV<S2SV_blank>Import\" ) ) ) { show_import_page_csv ( lbs ) ; return ; } if ( strieq ( command , loc ( \"XML<S2SV_blank>Import\" ) ) ) { show_import_page_xml ( lbs ) ; return ; } if ( strieq ( command , \"getmd5\" ) ) { show_md5_page ( lbs ) ; return ; } if ( strieq ( command , loc ( \"Synchronize\" ) ) ) { synchronize ( lbs , SYNC_HTML ) ; return ; } if ( strieq ( command , loc ( \"Logout\" ) ) ) { write_logfile ( lbs , \"LOGOUT\" ) ; if ( getcfg ( lbs -> name , \"Logout<S2SV_blank>to<S2SV_blank>main\" , str , sizeof ( str ) ) && atoi ( str ) == 1 ) { sprintf ( str , \"../\" ) ; setparam ( \"redir\" , str ) ; } else { if ( getcfg ( lbs -> name , \"Logout<S2SV_blank>to<S2SV_blank>URL\" , str , sizeof ( str ) ) ) setparam ( \"redir\" , str ) ; } set_sid_cookie ( lbs , \"\" , \"\" ) ; sid_remove ( getparam ( \"sid\" ) ) ; return ; } if ( strieq ( command , loc ( \"Delete\" ) ) ) { show_elog_delete ( lbs , message_id ) ; return ; } if ( strieq ( command , \"IM\" ) ) { call_image_magick ( lbs ) ; return ; } if ( ! _cmdline [ 0 ] && getcfg ( lbs -> name , \"Welcome<S2SV_blank>page\" , str , sizeof ( str ) ) && str [ 0 ] ) { if ( str [ 0 ] == DIR_SEPARATOR || str [ 1 ] == ':' ) strcpy ( file_name , str ) ; else { strlcpy ( file_name , resource_dir , sizeof ( file_name ) ) ; strlcat ( file_name , str , sizeof ( file_name ) ) ; } send_file_direct ( file_name ) ; return ; } if ( ! _cmdline [ 0 ] && getcfg ( lbs -> name , \"Start<S2SV_blank>page\" , str , sizeof ( str ) ) && str [ 0 ] ) { redirect ( lbs , str ) ; return ; } if ( dec_path [ 0 ] == 0 ) show_elog_list ( lbs , 0 , 0 , 0 , TRUE , NULL ) ; else show_elog_entry ( lbs , dec_path , command ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"value\" ) ) { strencode2 ( str , getparam ( \"value\" ) , sizeof ( str ) ) ; <S2SV_ModStart> ( loc ( str ) ) ; } <S2SV_ModEnd> s = loc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 static int header_gets ( SF_PRIVATE * psf , char * ptr , int bufsize ) { int k ; <S2SV_StartBug> for ( k = 0 ; k < bufsize - 1 ; k ++ ) <S2SV_EndBug> <S2SV_StartBug> { if ( psf -> headindex < psf -> headend ) <S2SV_EndBug> { ptr [ k ] = psf -> header [ psf -> headindex ] ; psf -> headindex ++ ; } else <S2SV_StartBug> { psf -> headend += psf_fread ( psf -> header + psf -> headend , 1 , 1 , psf ) ; <S2SV_EndBug> <S2SV_StartBug> ptr [ k ] = psf -> header [ psf -> headindex ] ; <S2SV_EndBug> psf -> headindex = psf -> headend ; } ; if ( ptr [ k ] == '\\\\n' ) break ; } ; ptr [ k ] = 0 ; return k ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int k ; if ( psf -> header . indx + bufsize >= psf -> header . len && psf_bump_header_allocation ( psf , bufsize ) ) return 0 ; <S2SV_ModStart> ( psf -> header . indx <S2SV_ModEnd> < psf -> <S2SV_ModStart> < psf -> header . end ) { ptr [ k ] = psf -> header . ptr [ psf -> header . indx ] ; psf -> header . indx <S2SV_ModEnd> ++ ; } <S2SV_ModStart> { psf -> header . end <S2SV_ModEnd> += psf_fread ( <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> + psf -> header . end <S2SV_ModEnd> , 1 , <S2SV_ModStart> psf -> header . ptr [ psf -> header . indx ] ; psf -> header . indx = psf -> header . end <S2SV_ModEnd> ; } ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-78 static int compile_search ( struct Context * ctx , const struct Pattern * pat , struct Buffer * buf ) { if ( do_search ( pat , 0 ) == 0 ) return 0 ; if ( pat -> not ) mutt_buffer_addstr ( buf , \"NOT<S2SV_blank>\" ) ; if ( pat -> child ) { int clauses ; clauses = do_search ( pat -> child , 1 ) ; if ( clauses > 0 ) { const struct Pattern * clause = pat -> child ; mutt_buffer_addch ( buf , '(' ) ; while ( clauses ) { if ( do_search ( clause , 0 ) ) { if ( pat -> op == MUTT_OR && clauses > 1 ) mutt_buffer_addstr ( buf , \"OR<S2SV_blank>\" ) ; clauses -- ; if ( compile_search ( ctx , clause , buf ) < 0 ) return - 1 ; if ( clauses ) mutt_buffer_addch ( buf , '<S2SV_blank>' ) ; } clause = clause -> next ; } mutt_buffer_addch ( buf , ')' ) ; } } else { char term [ STRING ] ; char * delim = NULL ; switch ( pat -> op ) { case MUTT_HEADER : mutt_buffer_addstr ( buf , \"HEADER<S2SV_blank>\" ) ; delim = strchr ( pat -> p . str , ':' ) ; if ( ! delim ) { mutt_error ( _ ( \"Header<S2SV_blank>search<S2SV_blank>without<S2SV_blank>header<S2SV_blank>name:<S2SV_blank>%s\" ) , pat -> p . str ) ; return - 1 ; } * delim = '\\\\0' ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , pat -> p . str ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; mutt_buffer_addch ( buf , '<S2SV_blank>' ) ; * delim = ':' ; delim ++ ; SKIPWS ( delim ) ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , delim ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; break ; case MUTT_BODY : mutt_buffer_addstr ( buf , \"BODY<S2SV_blank>\" ) ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , pat -> p . str ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; break ; case MUTT_WHOLE_MSG : mutt_buffer_addstr ( buf , \"TEXT<S2SV_blank>\" ) ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , pat -> p . str ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; break ; case MUTT_SERVERSEARCH : { struct ImapData * idata = ctx -> data ; if ( ! mutt_bit_isset ( idata -> capabilities , X_GM_EXT1 ) ) { mutt_error ( _ ( \"Server-side<S2SV_blank>custom<S2SV_blank>search<S2SV_blank>not<S2SV_blank>supported:<S2SV_blank>%s\" ) , pat -> p . str ) ; return - 1 ; } } mutt_buffer_addstr ( buf , \"X-GM-RAW<S2SV_blank>\" ) ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , pat -> p . str ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p . str , false <S2SV_ModStart> ) , delim , false <S2SV_ModStart> p . str , false <S2SV_ModStart> p . str , false <S2SV_ModStart> p . str , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> int jas_matrix_resize ( jas_matrix_t * matrix , int numrows , int numcols ) <S2SV_EndBug> { <S2SV_StartBug> int size ; <S2SV_EndBug> int i ; size = numrows * numcols ; if ( size > matrix -> datasize_ || numrows > matrix -> maxrows_ ) { return - 1 ; } matrix -> numrows_ = numrows ; matrix -> numcols_ = numcols ; for ( i = 0 ; i < numrows ; ++ i ) { matrix -> rows_ [ i ] = & matrix -> data_ [ numcols * i ] ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * matrix , jas_matind_t numrows , jas_matind_t <S2SV_ModEnd> numcols ) { <S2SV_ModStart> numcols ) { jas_matind_t size ; jas_matind_t <S2SV_ModEnd> i ; size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3756\n\n```\nCWE-20 int res_inverse ( vorbis_dsp_state * vd , vorbis_info_residue * info , ogg_int32_t * * in , int * nonzero , int ch ) { int i , j , k , s , used = 0 ; codec_setup_info * ci = ( codec_setup_info * ) vd -> vi -> codec_setup ; codebook * phrasebook = ci -> book_param + info -> groupbook ; int samples_per_partition = info -> grouping ; int partitions_per_word = phrasebook -> dim ; int pcmend = ci -> blocksizes [ vd -> W ] ; if ( info -> type < 2 ) { int max = pcmend >> 1 ; int end = ( info -> end < max ? info -> end : max ) ; int n = end - info -> begin ; if ( n > 0 ) { int partvals = n / samples_per_partition ; int partwords = ( partvals + partitions_per_word - 1 ) / partitions_per_word ; for ( i = 0 ; i < ch ; i ++ ) if ( nonzero [ i ] ) in [ used ++ ] = in [ i ] ; ch = used ; if ( used ) { char * * partword = ( char * * ) alloca ( ch * sizeof ( * partword ) ) ; for ( j = 0 ; j < ch ; j ++ ) partword [ j ] = ( char * ) alloca ( partwords * partitions_per_word * sizeof ( * partword [ j ] ) ) ; for ( s = 0 ; s < info -> stages ; s ++ ) { for ( i = 0 ; i < partvals ; ) { if ( s == 0 ) { partword [ 0 ] [ i + partitions_per_word - 1 ] = 1 ; for ( k = partitions_per_word - 2 ; k >= 0 ; k -- ) partword [ 0 ] [ i + k ] = partword [ 0 ] [ i + k + 1 ] * info -> partitions ; for ( j = 1 ; j < ch ; j ++ ) for ( k = partitions_per_word - 1 ; k >= 0 ; k -- ) partword [ j ] [ i + k ] = partword [ j - 1 ] [ i + k ] ; for ( j = 0 ; j < ch ; j ++ ) { int temp = vorbis_book_decode ( phrasebook , & vd -> opb ) ; if ( temp == - 1 ) goto eopbreak ; for ( k = 0 ; k < partitions_per_word ; k ++ ) { ogg_uint32_t div = partword [ j ] [ i + k ] ; partword [ j ] [ i + k ] = temp / div ; temp -= partword [ j ] [ i + k ] * div ; } } } for ( k = 0 ; k < partitions_per_word && i < partvals ; k ++ , i ++ ) for ( j = 0 ; j < ch ; j ++ ) { long offset = info -> begin + i * samples_per_partition ; <S2SV_StartBug> if ( info -> stagemasks [ ( int ) partword [ j ] [ i ] ] & ( 1 << s ) ) { <S2SV_EndBug> codebook * stagebook = ci -> book_param + info -> stagebooks [ ( partword [ j ] [ i ] << 3 ) + s ] ; if ( info -> type ) { if ( vorbis_book_decodev_add ( stagebook , in [ j ] + offset , & vd -> opb , samples_per_partition , - 8 ) == - 1 ) goto eopbreak ; } else { if ( vorbis_book_decodevs_add ( stagebook , in [ j ] + offset , & vd -> opb , samples_per_partition , - 8 ) == - 1 ) goto eopbreak ; } } } } } } } } else { int max = ( pcmend * ch ) >> 1 ; int end = ( info -> end < max ? info -> end : max ) ; int n = end - info -> begin ; if ( n > 0 ) { int partvals = n / samples_per_partition ; int partwords = ( partvals + partitions_per_word - 1 ) / partitions_per_word ; char * partword = ( char * ) alloca ( partwords * partitions_per_word * sizeof ( * partword ) ) ; int beginoff = info -> begin / ch ; for ( i = 0 ; i < ch ; i ++ ) if ( nonzero [ i ] ) break ; if ( i == ch ) return ( 0 ) ; samples_per_partition /= ch ; for ( s = 0 ; s < info -> stages ; s ++ ) { for ( i = 0 ; i < partvals ; ) { if ( s == 0 ) { int temp ; partword [ i + partitions_per_word - 1 ] = 1 ; for ( k = partitions_per_word - 2 ; k >= 0 ; k -- ) partword [ i + k ] = partword [ i + k + 1 ] * info -> partitions ; temp = vorbis_book_decode ( phrasebook , & vd -> opb ) ; if ( temp == - 1 ) goto eopbreak ; for ( k = 0 ; k < partitions_per_word ; k ++ ) { ogg_uint32_t div = partword [ i + k ] ; partword [ i + k ] = temp / div ; temp -= partword [ i + k ] * div ; } } for ( k = 0 ; k < partitions_per_word && i < partvals ; k ++ , i ++ ) if ( info -> stagemasks [ ( int ) partword [ i ] ] & ( 1 << s ) ) { codebook * stagebook = ci -> book_param + info -> stagebooks [ ( partword [ i ] << 3 ) + s ] ; if ( vorbis_book_decodevv_add ( stagebook , in , i * samples_per_partition + beginoff , ch , & vd -> opb , samples_per_partition , - 8 ) == - 1 ) goto eopbreak ; } } } } } eopbreak : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * samples_per_partition ; int idx = ( int ) partword [ j ] [ i ] ; if ( idx < info -> partitions && <S2SV_ModEnd> info -> stagemasks <S2SV_ModStart> -> stagemasks [ idx <S2SV_ModEnd> ] & (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 ssize_t oe_recvfrom ( int sockfd , void * buf , size_t len , int flags , <S2SV_StartBug> const struct oe_sockaddr * src_addr , <S2SV_EndBug> oe_socklen_t * addrlen ) { ssize_t ret = - 1 ; oe_fd_t * sock ; if ( ! ( sock = oe_fdtable_get ( sockfd , OE_FD_TYPE_SOCKET ) ) ) OE_RAISE_ERRNO ( oe_errno ) ; ret = sock -> ops . socket . recvfrom ( sock , buf , len , flags , src_addr , addrlen ) ; done : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int flags , <S2SV_ModEnd> struct oe_sockaddr *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2634\n\n```\nCWE-399 static int dcbnl_cee_fill ( struct sk_buff * skb , struct net_device * netdev ) { struct nlattr * cee , * app ; struct dcb_app_type * itr ; const struct dcbnl_rtnl_ops * ops = netdev -> dcbnl_ops ; int dcbx , i , err = - EMSGSIZE ; u8 value ; if ( nla_put_string ( skb , DCB_ATTR_IFNAME , netdev -> name ) ) goto nla_put_failure ; cee = nla_nest_start ( skb , DCB_ATTR_CEE ) ; if ( ! cee ) goto nla_put_failure ; if ( ops -> getpgtccfgtx && ops -> getpgbwgcfgtx ) { err = dcbnl_cee_pg_fill ( skb , netdev , 1 ) ; if ( err ) goto nla_put_failure ; } if ( ops -> getpgtccfgrx && ops -> getpgbwgcfgrx ) { err = dcbnl_cee_pg_fill ( skb , netdev , 0 ) ; if ( err ) goto nla_put_failure ; } if ( ops -> getpfccfg ) { struct nlattr * pfc_nest = nla_nest_start ( skb , DCB_ATTR_CEE_PFC ) ; if ( ! pfc_nest ) goto nla_put_failure ; for ( i = DCB_PFC_UP_ATTR_0 ; i <= DCB_PFC_UP_ATTR_7 ; i ++ ) { ops -> getpfccfg ( netdev , i - DCB_PFC_UP_ATTR_0 , & value ) ; if ( nla_put_u8 ( skb , i , value ) ) goto nla_put_failure ; } nla_nest_end ( skb , pfc_nest ) ; } spin_lock ( & dcb_lock ) ; app = nla_nest_start ( skb , DCB_ATTR_CEE_APP_TABLE ) ; if ( ! app ) goto dcb_unlock ; list_for_each_entry ( itr , & dcb_app_list , list ) { if ( itr -> ifindex == netdev -> ifindex ) { struct nlattr * app_nest = nla_nest_start ( skb , DCB_ATTR_APP ) ; if ( ! app_nest ) goto dcb_unlock ; err = nla_put_u8 ( skb , DCB_APP_ATTR_IDTYPE , itr -> app . selector ) ; if ( err ) goto dcb_unlock ; err = nla_put_u16 ( skb , DCB_APP_ATTR_ID , itr -> app . protocol ) ; if ( err ) goto dcb_unlock ; err = nla_put_u8 ( skb , DCB_APP_ATTR_PRIORITY , itr -> app . priority ) ; if ( err ) goto dcb_unlock ; nla_nest_end ( skb , app_nest ) ; } } nla_nest_end ( skb , app ) ; if ( netdev -> dcbnl_ops -> getdcbx ) dcbx = netdev -> dcbnl_ops -> getdcbx ( netdev ) ; else dcbx = - EOPNOTSUPP ; spin_unlock ( & dcb_lock ) ; if ( ops -> getfeatcfg ) { struct nlattr * feat = nla_nest_start ( skb , DCB_ATTR_CEE_FEAT ) ; if ( ! feat ) goto nla_put_failure ; for ( i = DCB_FEATCFG_ATTR_ALL + 1 ; i <= DCB_FEATCFG_ATTR_MAX ; i ++ ) if ( ! ops -> getfeatcfg ( netdev , i , & value ) && nla_put_u8 ( skb , i , value ) ) goto nla_put_failure ; nla_nest_end ( skb , feat ) ; } if ( ops -> cee_peer_getpg ) { struct cee_pg pg ; <S2SV_StartBug> err = ops -> cee_peer_getpg ( netdev , & pg ) ; <S2SV_EndBug> if ( ! err && nla_put ( skb , DCB_ATTR_CEE_PEER_PG , sizeof ( pg ) , & pg ) ) goto nla_put_failure ; } if ( ops -> cee_peer_getpfc ) { <S2SV_StartBug> struct cee_pfc pfc ; <S2SV_EndBug> err = ops -> cee_peer_getpfc ( netdev , & pfc ) ; if ( ! err && nla_put ( skb , DCB_ATTR_CEE_PEER_PFC , sizeof ( pfc ) , & pfc ) ) goto nla_put_failure ; } if ( ops -> peer_getappinfo && ops -> peer_getapptable ) { err = dcbnl_build_peer_app ( netdev , skb , DCB_ATTR_CEE_PEER_APP_TABLE , DCB_ATTR_CEE_PEER_APP_INFO , DCB_ATTR_CEE_PEER_APP ) ; if ( err ) goto nla_put_failure ; } nla_nest_end ( skb , cee ) ; if ( dcbx >= 0 ) { err = nla_put_u8 ( skb , DCB_ATTR_DCBX , dcbx ) ; if ( err ) goto nla_put_failure ; } return 0 ; dcb_unlock : spin_unlock ( & dcb_lock ) ; nla_put_failure : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cee_pg pg ; memset ( & pg , 0 , sizeof ( pg ) ) ; <S2SV_ModStart> struct cee_pfc pfc ; memset ( & pfc , 0 , sizeof ( pfc ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0049\n\n```\nCWE-119 static int complete_emulated_mmio ( struct kvm_vcpu * vcpu ) { struct kvm_run * run = vcpu -> run ; struct kvm_mmio_fragment * frag ; unsigned len ; BUG_ON ( ! vcpu -> mmio_needed ) ; frag = & vcpu -> mmio_fragments [ vcpu -> mmio_cur_fragment ] ; len = min ( 8u , frag -> len ) ; if ( ! vcpu -> mmio_is_write ) memcpy ( frag -> data , run -> mmio . data , len ) ; if ( frag -> len <= 8 ) { frag ++ ; vcpu -> mmio_cur_fragment ++ ; } else { frag -> data += len ; frag -> gpa += len ; frag -> len -= len ; } <S2SV_StartBug> if ( vcpu -> mmio_cur_fragment == vcpu -> mmio_nr_fragments ) { <S2SV_EndBug> vcpu -> mmio_needed = 0 ; if ( vcpu -> mmio_is_write ) return 1 ; vcpu -> mmio_read_completed = 1 ; return complete_emulated_io ( vcpu ) ; } run -> exit_reason = KVM_EXIT_MMIO ; run -> mmio . phys_addr = frag -> gpa ; if ( vcpu -> mmio_is_write ) memcpy ( run -> mmio . data , frag -> data , min ( 8u , frag -> len ) ) ; run -> mmio . len = min ( 8u , frag -> len ) ; run -> mmio . is_write = vcpu -> mmio_is_write ; vcpu -> arch . complete_userspace_io = complete_emulated_mmio ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu -> mmio_cur_fragment >= <S2SV_ModEnd> vcpu -> mmio_nr_fragments\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28196\n\n```\nCWE-674 static krb5_error_code split_der ( asn1buf * buf , uint8_t * const * der , size_t len , taginfo * tag_out ) { krb5_error_code ret ; const uint8_t * contents , * remainder ; size_t clen , rlen ; <S2SV_StartBug> ret = get_tag ( * der , len , tag_out , & contents , & clen , & remainder , & rlen ) ; <S2SV_EndBug> if ( ret ) return ret ; if ( rlen != 0 ) return ASN1_BAD_LENGTH ; insert_bytes ( buf , contents , clen ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , & rlen , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17456\n\n```\nCWE-20 static int fsck_gitmodules_fn ( const char * var , const char * value , void * vdata ) { struct fsck_gitmodules_data * data = vdata ; const char * subsection , * key ; int subsection_len ; char * name ; if ( parse_config_key ( var , \"submodule\" , & subsection , & subsection_len , & key ) < 0 || ! subsection ) return 0 ; name = xmemdupz ( subsection , subsection_len ) ; if ( check_submodule_name ( name ) < 0 ) data -> ret |= report ( data -> options , data -> obj , FSCK_MSG_GITMODULES_NAME , \"disallowed<S2SV_blank>submodule<S2SV_blank>name:<S2SV_blank>%s\" , name ) ; if ( ! strcmp ( key , \"url\" ) && value && looks_like_command_line_option ( value ) ) data -> ret |= report ( data -> options , data -> obj , FSCK_MSG_GITMODULES_URL , \"disallowed<S2SV_blank>submodule<S2SV_blank>url:<S2SV_blank>%s\" , value ) ; <S2SV_StartBug> free ( name ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) ; if ( ! strcmp ( key , \"path\" ) && value && looks_like_command_line_option ( value ) ) data -> ret |= report ( data -> options , data -> obj , FSCK_MSG_GITMODULES_PATH , \"disallowed<S2SV_blank>submodule<S2SV_blank>path:<S2SV_blank>%s\" , value ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1774\n\n```\nCWE-264 static void chase_port ( struct edgeport_port * port , unsigned long timeout , int flush ) { int baud_rate ; struct tty_struct * tty = tty_port_tty_get ( & port -> port -> port ) ; struct usb_serial * serial = port -> port -> serial ; wait_queue_t wait ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> if ( ! timeout ) timeout = ( HZ * EDGE_CLOSING_WAIT ) / 100 ; spin_lock_irqsave ( & port -> ep_lock , flags ) ; init_waitqueue_entry ( & wait , current ) ; add_wait_queue ( & tty -> write_wait , & wait ) ; for ( ; ; ) { set_current_state ( TASK_INTERRUPTIBLE ) ; if ( kfifo_len ( & port -> write_fifo ) == 0 || timeout == 0 || signal_pending ( current ) || serial -> disconnected ) break ; spin_unlock_irqrestore ( & port -> ep_lock , flags ) ; timeout = schedule_timeout ( timeout ) ; spin_lock_irqsave ( & port -> ep_lock , flags ) ; } set_current_state ( TASK_RUNNING ) ; remove_wait_queue ( & tty -> write_wait , & wait ) ; if ( flush ) kfifo_reset_out ( & port -> write_fifo ) ; spin_unlock_irqrestore ( & port -> ep_lock , flags ) ; tty_kref_put ( tty ) ; timeout += jiffies ; while ( ( long ) ( jiffies - timeout ) < 0 && ! signal_pending ( current ) && ! serial -> disconnected ) { if ( ! tx_active ( port ) ) break ; msleep ( 10 ) ; } if ( serial -> disconnected ) return ; baud_rate = port -> baud_rate ; if ( baud_rate == 0 ) baud_rate = 50 ; msleep ( max ( 1 , DIV_ROUND_UP ( 10000 , baud_rate ) ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned long flags ; if ( ! tty ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5548\n\n```\nCWE-119 static int atusb_get_and_show_revision ( struct atusb * atusb ) { struct usb_device * usb_dev = atusb -> usb_dev ; <S2SV_StartBug> unsigned char buffer [ 3 ] ; <S2SV_EndBug> int ret ; ret = atusb_control_msg ( atusb , usb_rcvctrlpipe ( usb_dev , 0 ) , ATUSB_ID , ATUSB_REQ_FROM_DEV , 0 , 0 , buffer , 3 , 1000 ) ; if ( ret >= 0 ) { atusb -> fw_ver_maj = buffer [ 0 ] ; atusb -> fw_ver_min = buffer [ 1 ] ; atusb -> fw_hw_type = buffer [ 2 ] ; dev_info ( & usb_dev -> dev , \"Firmware:<S2SV_blank>major:<S2SV_blank>%u,<S2SV_blank>minor:<S2SV_blank>%u,<S2SV_blank>hardware<S2SV_blank>type:<S2SV_blank>%u\\\\n\" , atusb -> fw_ver_maj , atusb -> fw_ver_min , atusb -> fw_hw_type ) ; } if ( atusb -> fw_ver_maj == 0 && atusb -> fw_ver_min < 2 ) { dev_info ( & usb_dev -> dev , \"Firmware<S2SV_blank>version<S2SV_blank>(%u.%u)<S2SV_blank>predates<S2SV_blank>our<S2SV_blank>first<S2SV_blank>public<S2SV_blank>release.\" , atusb -> fw_ver_maj , atusb -> fw_ver_min ) ; dev_info ( & usb_dev -> dev , \"Please<S2SV_blank>update<S2SV_blank>to<S2SV_blank>version<S2SV_blank>0.2<S2SV_blank>or<S2SV_blank>newer\" ) ; } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned char * buffer ; int ret ; buffer = kmalloc ( 3 , GFP_KERNEL ) ; if ( ! buffer ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> ) ; } kfree ( buffer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-345(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15162\n\n```\nCWE-345 static int daemon_AuthUserPwd ( char * username , char * password , char * errbuf ) { # ifdef _WIN32 <S2SV_StartBug> HANDLE Token ; <S2SV_EndBug> <S2SV_StartBug> if ( LogonUser ( username , \".\" , password , LOGON32_LOGON_NETWORK , LOGON32_PROVIDER_DEFAULT , & Token ) == 0 ) <S2SV_EndBug> { <S2SV_StartBug> pcap_fmt_errmsg_for_win32_err ( errbuf , PCAP_ERRBUF_SIZE , <S2SV_EndBug> <S2SV_StartBug> GetLastError ( ) , \"LogonUser()<S2SV_blank>failed\" ) ; <S2SV_EndBug> return - 1 ; } <S2SV_StartBug> if ( ImpersonateLoggedOnUser ( Token ) == 0 ) <S2SV_EndBug> { pcap_fmt_errmsg_for_win32_err ( errbuf , PCAP_ERRBUF_SIZE , GetLastError ( ) , \"ImpersonateLoggedOnUser()<S2SV_blank>failed\" ) ; CloseHandle ( Token ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } CloseHandle ( Token ) ; return 0 ; <S2SV_StartBug> # else <S2SV_EndBug> struct passwd * user ; char * user_password ; # ifdef HAVE_GETSPNAM struct spwd * usersp ; # endif char * crypt_password ; if ( ( user = getpwnam ( username ) ) == NULL ) { <S2SV_StartBug> pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed:<S2SV_blank>user<S2SV_blank>name<S2SV_blank>or<S2SV_blank>password<S2SV_blank>incorrect\" ) ; <S2SV_EndBug> return - 1 ; } # ifdef HAVE_GETSPNAM if ( ( usersp = getspnam ( username ) ) == NULL ) { <S2SV_StartBug> pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed:<S2SV_blank>user<S2SV_blank>name<S2SV_blank>or<S2SV_blank>password<S2SV_blank>incorrect\" ) ; <S2SV_EndBug> return - 1 ; } user_password = usersp -> sp_pwdp ; # else user_password = user -> pw_passwd ; # endif <S2SV_StartBug> crypt_password = crypt ( password , user_password ) ; <S2SV_EndBug> if ( crypt_password == NULL ) { <S2SV_StartBug> pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed\" ) ; <S2SV_EndBug> return - 1 ; } if ( strcmp ( user_password , crypt_password ) != 0 ) { <S2SV_StartBug> pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed:<S2SV_blank>user<S2SV_blank>name<S2SV_blank>or<S2SV_blank>password<S2SV_blank>incorrect\" ) ; <S2SV_EndBug> return - 1 ; } if ( setuid ( user -> pw_uid ) ) { <S2SV_StartBug> pcap_fmt_errmsg_for_errno ( errbuf , PCAP_ERRBUF_SIZE , <S2SV_EndBug> <S2SV_StartBug> errno , \"setuid\" ) ; <S2SV_EndBug> <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } return 0 ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> # ifdef _WIN32 DWORD error ; <S2SV_ModStart> HANDLE Token ; char errmsgbuf [ PCAP_ERRBUF_SIZE ] ; <S2SV_ModStart> 0 ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed\" ) ; error = GetLastError ( ) ; if ( error != ERROR_LOGON_FAILURE ) { pcap_fmt_errmsg_for_win32_err ( errmsgbuf , PCAP_ERRBUF_SIZE , error , \"LogonUser()<S2SV_blank>failed\" ) ; rpcapd_log ( LOGPRIO_ERROR , \"%s\" , errmsgbuf ) ; } return - 1 ; } if ( ImpersonateLoggedOnUser ( Token ) == 0 ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed\" ) ; pcap_fmt_errmsg_for_win32_err ( errmsgbuf <S2SV_ModEnd> , PCAP_ERRBUF_SIZE , <S2SV_ModStart> ( ) , \"ImpersonateLoggedOnUser()<S2SV_blank>failed\" ) ; rpcapd_log ( LOGPRIO_ERROR , \"%s\" , errmsgbuf ) ; CloseHandle <S2SV_ModEnd> ( Token ) <S2SV_ModStart> ( Token ) ; return - 1 ; } <S2SV_ModEnd> CloseHandle ( Token <S2SV_ModStart> ) ; return <S2SV_ModEnd> 0 ; # <S2SV_ModStart> ; # else int error ; <S2SV_ModStart> , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> ; # endif errno = 0 ; <S2SV_ModStart> NULL ) { error = errno ; pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed\" ) ; if ( error == 0 ) { rpcapd_log ( LOGPRIO_ERROR , \"crypt()<S2SV_blank>failed\" ) ; } else { rpcapd_log ( LOGPRIO_ERROR , \"crypt()<S2SV_blank>failed:<S2SV_blank>%s\" , strerror ( error ) ) ; } <S2SV_ModEnd> return - 1 <S2SV_ModStart> , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ) { error = errno ; <S2SV_ModStart> , PCAP_ERRBUF_SIZE , error <S2SV_ModEnd> , \"setuid\" ) <S2SV_ModStart> \"setuid\" ) ; rpcapd_log ( LOGPRIO_ERROR , \"setuid()<S2SV_blank>failed:<S2SV_blank>%s\" , strerror ( error ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20406\n\n```\nCWE-190 static PyObject * <S2SV_StartBug> _Unpickler_MemoGet ( UnpicklerObject * self , Py_ssize_t idx ) <S2SV_EndBug> { <S2SV_StartBug> if ( idx < 0 || idx >= self -> memo_size ) <S2SV_EndBug> return NULL ; return self -> memo [ idx ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * self , size_t <S2SV_ModEnd> idx ) { <S2SV_ModStart> { if ( <S2SV_ModEnd> idx >= self\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 void sas_deform_port ( struct asd_sas_phy * phy , int gone ) { struct sas_ha_struct * sas_ha = phy -> ha ; struct asd_sas_port * port = phy -> port ; struct sas_internal * si = to_sas_internal ( sas_ha -> core . shost -> transportt ) ; struct domain_device * dev ; unsigned long flags ; if ( ! port ) return ; dev = port -> port_dev ; if ( dev ) dev -> pathways -- ; if ( port -> num_phys == 1 ) { sas_unregister_domain_devices ( port , gone ) ; <S2SV_StartBug> sas_port_delete ( port -> port ) ; <S2SV_EndBug> port -> port = NULL ; } else { sas_port_delete_phy ( port -> port , phy -> phy ) ; sas_device_set_phy ( dev , port -> port ) ; } if ( si -> dft -> lldd_port_deformed ) si -> dft -> lldd_port_deformed ( phy ) ; spin_lock_irqsave ( & sas_ha -> phy_port_lock , flags ) ; spin_lock ( & port -> phy_list_lock ) ; list_del_init ( & phy -> port_phy_el ) ; sas_phy_set_target ( phy , NULL ) ; phy -> port = NULL ; port -> num_phys -- ; port -> phy_mask &= ~ ( 1U << phy -> id ) ; if ( port -> num_phys == 0 ) { INIT_LIST_HEAD ( & port -> phy_list ) ; memset ( port -> sas_addr , 0 , SAS_ADDR_SIZE ) ; memset ( port -> attached_sas_addr , 0 , SAS_ADDR_SIZE ) ; port -> class = 0 ; port -> iproto = 0 ; port -> tproto = 0 ; port -> oob_mode = 0 ; port -> phy_mask = 0 ; } spin_unlock ( & port -> phy_list_lock ) ; spin_unlock_irqrestore ( & sas_ha -> phy_port_lock , flags ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gone ) ; sas_destruct_devices ( port ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty <S2SV_StartBug> ast_for_with_stmt ( struct compiling * c , const node * n , int is_async ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> int i , n_items , nch_minus_type , has_type_comment ; asdl_seq * items , * body ; string type_comment ; if ( is_async && c -> c_feature_version < 5 ) { ast_error ( c , n , \"Async<S2SV_blank>with<S2SV_blank>statements<S2SV_blank>are<S2SV_blank>only<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>Python<S2SV_blank>3.5<S2SV_blank>and<S2SV_blank>greater\" ) ; return NULL ; } REQ ( n , with_stmt ) ; has_type_comment = TYPE ( CHILD ( n , NCH ( n ) - 2 ) ) == TYPE_COMMENT ; nch_minus_type = NCH ( n ) - has_type_comment ; n_items = ( nch_minus_type - 2 ) / 2 ; items = _Ta3_asdl_seq_new ( n_items , c -> c_arena ) ; if ( ! items ) return NULL ; for ( i = 1 ; i < nch_minus_type - 2 ; i += 2 ) { withitem_ty item = ast_for_with_item ( c , CHILD ( n , i ) ) ; if ( ! item ) return NULL ; asdl_seq_SET ( items , ( i - 1 ) / 2 , item ) ; } body = ast_for_suite ( c , CHILD ( n , NCH ( n ) - 1 ) ) ; if ( ! body ) return NULL ; if ( has_type_comment ) type_comment = NEW_TYPE_COMMENT ( CHILD ( n , NCH ( n ) - 2 ) ) ; else type_comment = NULL ; if ( is_async ) <S2SV_StartBug> return AsyncWith ( items , body , type_comment , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; <S2SV_EndBug> else return With ( items , body , type_comment , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const node * n0 , bool <S2SV_ModEnd> is_async ) { <S2SV_ModStart> is_async ) { const node * const n = is_async ? CHILD ( n0 , 1 ) : n0 ; <S2SV_ModStart> , LINENO ( n0 ) , n0 <S2SV_ModEnd> -> n_col_offset ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9016\n\n```\nCWE-362 struct request * blk_mq_tag_to_rq ( struct blk_mq_tags * tags , unsigned int tag ) { <S2SV_StartBug> struct request * rq = tags -> rqs [ tag ] ; <S2SV_EndBug> <S2SV_StartBug> struct blk_flush_queue * fq = blk_get_flush_queue ( rq -> q , rq -> mq_ctx ) ; <S2SV_EndBug> if ( ! is_flush_request ( rq , fq , tag ) ) return rq ; return fq -> flush_rq ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tag ) { return <S2SV_ModEnd> tags -> rqs <S2SV_ModStart> tag ] ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2182\n\n```\nCWE-119 static bool ldm_frag_add ( const u8 * data , int size , struct list_head * frags ) { struct frag * f ; struct list_head * item ; int rec , num , group ; BUG_ON ( ! data || ! frags ) ; if ( size < 2 * VBLK_SIZE_HEAD ) { ldm_error ( \"Value<S2SV_blank>of<S2SV_blank>size<S2SV_blank>is<S2SV_blank>to<S2SV_blank>small.\" ) ; return false ; } group = get_unaligned_be32 ( data + 0x08 ) ; rec = get_unaligned_be16 ( data + 0x0C ) ; num = get_unaligned_be16 ( data + 0x0E ) ; if ( ( num < 1 ) || ( num > 4 ) ) { ldm_error ( \"A<S2SV_blank>VBLK<S2SV_blank>claims<S2SV_blank>to<S2SV_blank>have<S2SV_blank>%d<S2SV_blank>parts.\" , num ) ; return false ; } if ( rec >= num ) { ldm_error ( \"REC<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>NUM<S2SV_blank>value<S2SV_blank>(%d)\" , rec , num ) ; return false ; } list_for_each ( item , frags ) { f = list_entry ( item , struct frag , list ) ; if ( f -> group == group ) goto found ; } f = kmalloc ( sizeof ( * f ) + size * num , GFP_KERNEL ) ; if ( ! f ) { ldm_crit ( \"Out<S2SV_blank>of<S2SV_blank>memory.\" ) ; return false ; } f -> group = group ; f -> num = num ; f -> rec = rec ; f -> map = 0xFF << num ; list_add_tail ( & f -> list , frags ) ; found : <S2SV_StartBug> if ( f -> map & ( 1 << rec ) ) { <S2SV_EndBug> ldm_error ( \"Duplicate<S2SV_blank>VBLK,<S2SV_blank>part<S2SV_blank>%d.\" , rec ) ; f -> map &= 0x7F ; return false ; } f -> map |= ( 1 << rec ) ; data += VBLK_SIZE_HEAD ; size -= VBLK_SIZE_HEAD ; memcpy ( f -> data + rec * ( size - VBLK_SIZE_HEAD ) + VBLK_SIZE_HEAD , data , size ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( rec >= f -> num ) { ldm_error ( \"REC<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>NUM<S2SV_blank>value<S2SV_blank>(%d)\" , rec , f -> num ) ; return false ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2491\n\n```\nCWE-399 static void nlmclnt_unlock_callback ( struct rpc_task * task , void * data ) { struct nlm_rqst * req = data ; u32 status = ntohl ( req -> a_res . status ) ; if ( RPC_ASSASSINATED ( task ) ) goto die ; if ( task -> tk_status < 0 ) { dprintk ( \"lockd:<S2SV_blank>unlock<S2SV_blank>failed<S2SV_blank>(err<S2SV_blank>=<S2SV_blank>%d)\\\\n\" , - task -> tk_status ) ; <S2SV_StartBug> goto retry_rebind ; <S2SV_EndBug> } if ( status == NLM_LCK_DENIED_GRACE_PERIOD ) { rpc_delay ( task , NLMCLNT_GRACE_WAIT ) ; goto retry_unlock ; } if ( status != NLM_LCK_GRANTED ) printk ( KERN_WARNING \"lockd:<S2SV_blank>unexpected<S2SV_blank>unlock<S2SV_blank>status:<S2SV_blank>%d\\\\n\" , status ) ; die : return ; retry_rebind : nlm_rebind_host ( req -> a_host ) ; retry_unlock : rpc_restart_call ( task ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tk_status ) ; switch ( task -> tk_status ) { case - EACCES : case - EIO : goto die ; default : <S2SV_ModStart> goto retry_rebind ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5104\n\n```\nCWE-284 int socket_create ( uint16_t port ) { int sfd = - 1 ; int yes = 1 ; # ifdef WIN32 WSADATA wsa_data ; if ( ! wsa_init ) { if ( WSAStartup ( MAKEWORD ( 2 , 2 ) , & wsa_data ) != ERROR_SUCCESS ) { fprintf ( stderr , \"WSAStartup<S2SV_blank>failed!\\\\n\" ) ; ExitProcess ( - 1 ) ; } wsa_init = 1 ; } # endif struct sockaddr_in saddr ; if ( 0 > ( sfd = socket ( PF_INET , SOCK_STREAM , IPPROTO_TCP ) ) ) { perror ( \"socket()\" ) ; return - 1 ; } if ( setsockopt ( sfd , SOL_SOCKET , SO_REUSEADDR , ( void * ) & yes , sizeof ( int ) ) == - 1 ) { perror ( \"setsockopt()\" ) ; socket_close ( sfd ) ; return - 1 ; } # ifdef SO_NOSIGPIPE if ( setsockopt ( sfd , SOL_SOCKET , SO_NOSIGPIPE , ( void * ) & yes , sizeof ( int ) ) == - 1 ) { perror ( \"setsockopt()\" ) ; socket_close ( sfd ) ; return - 1 ; } # endif memset ( ( void * ) & saddr , 0 , sizeof ( saddr ) ) ; saddr . sin_family = AF_INET ; <S2SV_StartBug> saddr . sin_addr . s_addr = htonl ( INADDR_ANY ) ; <S2SV_EndBug> saddr . sin_port = htons ( port ) ; if ( 0 > bind ( sfd , ( struct sockaddr * ) & saddr , sizeof ( saddr ) ) ) { perror ( \"bind()\" ) ; socket_close ( sfd ) ; return - 1 ; } if ( listen ( sfd , 1 ) == - 1 ) { perror ( \"listen()\" ) ; socket_close ( sfd ) ; return - 1 ; } return sfd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = htonl ( INADDR_LOOPBACK <S2SV_ModEnd> ) ; saddr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2517\n\n```\nCWE-119 static int nl80211_start_sched_scan ( struct sk_buff * skb , struct genl_info * info ) { struct cfg80211_sched_scan_request * request ; struct cfg80211_registered_device * rdev = info -> user_ptr [ 0 ] ; struct net_device * dev = info -> user_ptr [ 1 ] ; struct nlattr * attr ; struct wiphy * wiphy ; int err , tmp , n_ssids = 0 , n_channels , i ; u32 interval ; enum ieee80211_band band ; size_t ie_len ; if ( ! ( rdev -> wiphy . flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN ) || ! rdev -> ops -> sched_scan_start ) return - EOPNOTSUPP ; if ( ! is_valid_ie_attr ( info -> attrs [ NL80211_ATTR_IE ] ) ) return - EINVAL ; if ( rdev -> sched_scan_req ) return - EINPROGRESS ; if ( ! info -> attrs [ NL80211_ATTR_SCHED_SCAN_INTERVAL ] ) return - EINVAL ; interval = nla_get_u32 ( info -> attrs [ NL80211_ATTR_SCHED_SCAN_INTERVAL ] ) ; if ( interval == 0 ) return - EINVAL ; wiphy = & rdev -> wiphy ; if ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) { n_channels = validate_scan_freqs ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) ; if ( ! n_channels ) return - EINVAL ; } else { n_channels = 0 ; for ( band = 0 ; band < IEEE80211_NUM_BANDS ; band ++ ) if ( wiphy -> bands [ band ] ) n_channels += wiphy -> bands [ band ] -> n_channels ; } if ( info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] ) nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] , tmp ) n_ssids ++ ; if ( n_ssids > wiphy -> max_scan_ssids ) return - EINVAL ; if ( info -> attrs [ NL80211_ATTR_IE ] ) ie_len = nla_len ( info -> attrs [ NL80211_ATTR_IE ] ) ; else ie_len = 0 ; if ( ie_len > wiphy -> max_scan_ie_len ) return - EINVAL ; request = kzalloc ( sizeof ( * request ) + sizeof ( * request -> ssids ) * n_ssids + sizeof ( * request -> channels ) * n_channels + ie_len , GFP_KERNEL ) ; if ( ! request ) return - ENOMEM ; if ( n_ssids ) request -> ssids = ( void * ) & request -> channels [ n_channels ] ; request -> n_ssids = n_ssids ; if ( ie_len ) { if ( request -> ssids ) request -> ie = ( void * ) ( request -> ssids + n_ssids ) ; else request -> ie = ( void * ) ( request -> channels + n_channels ) ; } i = 0 ; if ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) { nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] , tmp ) { struct ieee80211_channel * chan ; chan = ieee80211_get_channel ( wiphy , nla_get_u32 ( attr ) ) ; if ( ! chan ) { err = - EINVAL ; goto out_free ; } if ( chan -> flags & IEEE80211_CHAN_DISABLED ) continue ; request -> channels [ i ] = chan ; i ++ ; } } else { for ( band = 0 ; band < IEEE80211_NUM_BANDS ; band ++ ) { int j ; if ( ! wiphy -> bands [ band ] ) continue ; for ( j = 0 ; j < wiphy -> bands [ band ] -> n_channels ; j ++ ) { struct ieee80211_channel * chan ; chan = & wiphy -> bands [ band ] -> channels [ j ] ; if ( chan -> flags & IEEE80211_CHAN_DISABLED ) continue ; request -> channels [ i ] = chan ; i ++ ; } } } if ( ! i ) { err = - EINVAL ; goto out_free ; } request -> n_channels = i ; i = 0 ; if ( info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] ) { nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] , tmp ) { <S2SV_StartBug> if ( request -> ssids [ i ] . ssid_len > <S2SV_EndBug> IEEE80211_MAX_SSID_LEN ) { err = - EINVAL ; goto out_free ; } memcpy ( request -> ssids [ i ] . ssid , nla_data ( attr ) , nla_len ( attr ) ) ; <S2SV_StartBug> request -> ssids [ i ] . ssid_len = nla_len ( attr ) ; <S2SV_EndBug> i ++ ; } } if ( info -> attrs [ NL80211_ATTR_IE ] ) { request -> ie_len = nla_len ( info -> attrs [ NL80211_ATTR_IE ] ) ; memcpy ( ( void * ) request -> ie , nla_data ( info -> attrs [ NL80211_ATTR_IE ] ) , request -> ie_len ) ; } request -> dev = dev ; request -> wiphy = & rdev -> wiphy ; request -> interval = interval ; err = rdev -> ops -> sched_scan_start ( & rdev -> wiphy , dev , request ) ; if ( ! err ) { rdev -> sched_scan_req = request ; nl80211_send_sched_scan ( rdev , dev , NL80211_CMD_START_SCHED_SCAN ) ; goto out ; } out_free : kfree ( request ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp ) { request -> ssids [ i ] . ssid_len = nla_len ( attr ) ; <S2SV_ModStart> ) ) ; <S2SV_ModEnd> i ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2007-6762\n\n```\nCWE-119 static int netlbl_cipsov4_add_common ( struct genl_info * info , struct cipso_v4_doi * doi_def ) { struct nlattr * nla ; int nla_rem ; u32 iter = 0 ; doi_def -> doi = nla_get_u32 ( info -> attrs [ NLBL_CIPSOV4_A_DOI ] ) ; if ( nla_validate_nested ( info -> attrs [ NLBL_CIPSOV4_A_TAGLST ] , NLBL_CIPSOV4_A_MAX , netlbl_cipsov4_genl_policy ) != 0 ) return - EINVAL ; nla_for_each_nested ( nla , info -> attrs [ NLBL_CIPSOV4_A_TAGLST ] , nla_rem ) if ( nla -> nla_type == NLBL_CIPSOV4_A_TAG ) { <S2SV_StartBug> if ( iter > CIPSO_V4_TAG_MAXCNT ) <S2SV_EndBug> return - EINVAL ; doi_def -> tags [ iter ++ ] = nla_get_u8 ( nla ) ; } <S2SV_StartBug> if ( iter < CIPSO_V4_TAG_MAXCNT ) <S2SV_EndBug> <S2SV_StartBug> doi_def -> tags [ iter ] = CIPSO_V4_TAG_INVALID ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( iter >= <S2SV_ModEnd> CIPSO_V4_TAG_MAXCNT ) return <S2SV_ModStart> ) ; } while <S2SV_ModEnd> ( iter < <S2SV_ModStart> tags [ iter ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int count_comp_fors ( struct compiling * c , const node * n ) { int n_fors = 0 ; <S2SV_StartBug> int is_async ; <S2SV_EndBug> count_comp_for : is_async = 0 ; n_fors ++ ; REQ ( n , comp_for ) ; <S2SV_StartBug> if ( TYPE ( CHILD ( n , 0 ) ) == ASYNC ) { <S2SV_EndBug> is_async = 1 ; } <S2SV_StartBug> if ( NCH ( n ) == ( 5 + is_async ) ) { <S2SV_EndBug> <S2SV_StartBug> n = CHILD ( n , 4 + is_async ) ; <S2SV_EndBug> } else { return n_fors ; } count_comp_iter : REQ ( n , comp_iter ) ; n = CHILD ( n , 0 ) ; if ( TYPE ( n ) == comp_for ) goto count_comp_for ; else if ( TYPE ( n ) == comp_if ) { if ( NCH ( n ) == 3 ) { n = CHILD ( n , 2 ) ; goto count_comp_iter ; } else return n_fors ; <S2SV_StartBug> } <S2SV_EndBug> PyErr_SetString ( PyExc_SystemError , \"logic<S2SV_blank>error<S2SV_blank>in<S2SV_blank>count_comp_fors\" ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; count_comp_for : <S2SV_ModEnd> n_fors ++ ; <S2SV_ModStart> ; if ( NCH ( n ) == 2 ) { REQ ( CHILD ( n , 0 ) , NAME ) ; assert ( strcmp ( STR ( CHILD ( n , 0 ) ) , \"async\" ) == 0 ) ; n = CHILD ( n , 1 ) ; } else if ( NCH ( n ) == 1 ) { n = CHILD ( n , 0 ) ; } else { goto error <S2SV_ModEnd> ; } if <S2SV_ModStart> == ( 5 <S2SV_ModEnd> ) ) { <S2SV_ModStart> n , 4 <S2SV_ModEnd> ) ; } <S2SV_ModStart> n_fors ; } error :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12990\n\n```\nCWE-835 static const u_char * ikev1_nonce_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len _U_ , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { struct isakmp_gen e ; ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_NONCE ) ) ) ; ND_TCHECK ( * ext ) ; UNALIGNED_MEMCPY ( & e , ext , sizeof ( e ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>n<S2SV_blank>len=%d\" , ntohs ( e . len ) - 4 ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( 2 < ndo -> ndo_vflag && 4 < ntohs ( e . len ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( ext + 1 ) , ntohs ( e . len ) - 4 ) ) goto trunc ; <S2SV_StartBug> } else if ( 1 < ndo -> ndo_vflag && 4 < ntohs ( e . len ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( ! ike_show_somedata ( ndo , ( const u_char * ) ( const uint8_t * ) ( ext + 1 ) , ep ) ) <S2SV_EndBug> goto trunc ; } <S2SV_StartBug> return ( const u_char * ) ext + ntohs ( e . len ) ; <S2SV_EndBug> trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_NONCE ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"<S2SV_blank>n<S2SV_blank>len=%u\" <S2SV_ModEnd> , ntohs ( <S2SV_ModStart> ; if ( ntohs ( e . len ) > 4 ) { if ( <S2SV_ModEnd> ndo -> ndo_vflag <S2SV_ModStart> ndo -> ndo_vflag > 2 <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> else if ( <S2SV_ModEnd> ndo -> ndo_vflag <S2SV_ModStart> ndo -> ndo_vflag > 1 <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> * ) ( <S2SV_ModEnd> ext + 1 <S2SV_ModStart> trunc ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3153\n\n```\nCWE-264 static int futex_wait_requeue_pi ( u32 __user * uaddr , unsigned int flags , u32 val , ktime_t * abs_time , u32 bitset , u32 __user * uaddr2 ) { struct hrtimer_sleeper timeout , * to = NULL ; struct rt_mutex_waiter rt_waiter ; struct rt_mutex * pi_mutex = NULL ; struct futex_hash_bucket * hb ; union futex_key key2 = FUTEX_KEY_INIT ; struct futex_q q = futex_q_init ; int res , ret ; if ( uaddr == uaddr2 ) return - EINVAL ; if ( ! bitset ) return - EINVAL ; if ( abs_time ) { to = & timeout ; hrtimer_init_on_stack ( & to -> timer , ( flags & FLAGS_CLOCKRT ) ? CLOCK_REALTIME : CLOCK_MONOTONIC , HRTIMER_MODE_ABS ) ; hrtimer_init_sleeper ( to , current ) ; hrtimer_set_expires_range_ns ( & to -> timer , * abs_time , current -> timer_slack_ns ) ; } debug_rt_mutex_init_waiter ( & rt_waiter ) ; RB_CLEAR_NODE ( & rt_waiter . pi_tree_entry ) ; RB_CLEAR_NODE ( & rt_waiter . tree_entry ) ; rt_waiter . task = NULL ; ret = get_futex_key ( uaddr2 , flags & FLAGS_SHARED , & key2 , VERIFY_WRITE ) ; if ( unlikely ( ret != 0 ) ) goto out ; q . bitset = bitset ; q . rt_waiter = & rt_waiter ; q . requeue_pi_key = & key2 ; ret = futex_wait_setup ( uaddr , val , flags , & q , & hb ) ; if ( ret ) goto out_key2 ; <S2SV_StartBug> futex_wait_queue_me ( hb , & q , to ) ; <S2SV_EndBug> spin_lock ( & hb -> lock ) ; ret = handle_early_requeue_pi_wakeup ( hb , & q , & key2 , to ) ; spin_unlock ( & hb -> lock ) ; if ( ret ) goto out_put_keys ; if ( ! q . rt_waiter ) { if ( q . pi_state && ( q . pi_state -> owner != current ) ) { spin_lock ( q . lock_ptr ) ; ret = fixup_pi_state_owner ( uaddr2 , & q , current ) ; spin_unlock ( q . lock_ptr ) ; } } else { WARN_ON ( ! q . pi_state ) ; pi_mutex = & q . pi_state -> pi_mutex ; ret = rt_mutex_finish_proxy_lock ( pi_mutex , to , & rt_waiter , 1 ) ; debug_rt_mutex_free_waiter ( & rt_waiter ) ; spin_lock ( q . lock_ptr ) ; res = fixup_owner ( uaddr2 , & q , ! ret ) ; if ( res ) ret = ( res < 0 ) ? res : 0 ; unqueue_me_pi ( & q ) ; } if ( ret == - EFAULT ) { if ( pi_mutex && rt_mutex_owner ( pi_mutex ) == current ) rt_mutex_unlock ( pi_mutex ) ; } else if ( ret == - EINTR ) { ret = - EWOULDBLOCK ; } out_put_keys : put_futex_key ( & q . key ) ; out_key2 : put_futex_key ( & key2 ) ; out : if ( to ) { hrtimer_cancel ( & to -> timer ) ; destroy_hrtimer_on_stack ( & to -> timer ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out_key2 ; if ( match_futex ( & q . key , & key2 ) ) { ret = - EINVAL ; goto out_put_keys ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4581\n\n```\nCWE-000 int propagate_mnt ( struct mount * dest_mnt , struct mountpoint * dest_mp , struct mount * source_mnt , struct hlist_head * tree_list ) { struct mount * m , * n ; int ret = 0 ; user_ns = current -> nsproxy -> mnt_ns -> user_ns ; last_dest = dest_mnt ; <S2SV_StartBug> last_source = source_mnt ; <S2SV_EndBug> mp = dest_mp ; list = tree_list ; dest_master = dest_mnt -> mnt_master ; for ( n = next_peer ( dest_mnt ) ; n != dest_mnt ; n = next_peer ( n ) ) { ret = propagate_one ( n ) ; if ( ret ) goto out ; } for ( m = next_group ( dest_mnt , dest_mnt ) ; m ; m = next_group ( m , dest_mnt ) ) { n = m ; do { ret = propagate_one ( n ) ; if ( ret ) goto out ; n = next_peer ( n ) ; } while ( n != m ) ; } out : read_seqlock_excl ( & mount_lock ) ; hlist_for_each_entry ( n , tree_list , mnt_hash ) { m = n -> mnt_parent ; if ( m -> mnt_master != dest_mnt -> mnt_master ) CLEAR_MNT_MARK ( m -> mnt_master ) ; } read_sequnlock_excl ( & mount_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = dest_mnt ; first_source = source_mnt ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 static int tt_s2_4600_frontend_attach ( struct dvb_usb_adapter * adap ) { struct dvb_usb_device * d = adap -> dev ; <S2SV_StartBug> struct dw2102_state * state = d -> priv ; <S2SV_EndBug> u8 obuf [ 3 ] = { 0xe , 0x80 , 0 } ; u8 ibuf [ ] = { 0 } ; struct i2c_adapter * i2c_adapter ; struct i2c_client * client ; struct i2c_board_info board_info ; struct m88ds3103_platform_data m88ds3103_pdata = { } ; struct ts2020_config ts2020_config = { } ; <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x02 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; msleep ( 300 ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x83 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x83 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0x51 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 1 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> <S2SV_StartBug> err ( \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_EndBug> m88ds3103_pdata . clk = 27000000 ; m88ds3103_pdata . i2c_wr_max = 33 ; m88ds3103_pdata . ts_mode = M88DS3103_TS_CI ; m88ds3103_pdata . ts_clk = 16000 ; m88ds3103_pdata . ts_clk_pol = 0 ; m88ds3103_pdata . spec_inv = 0 ; m88ds3103_pdata . agc = 0x99 ; m88ds3103_pdata . agc_inv = 0 ; m88ds3103_pdata . clk_out = M88DS3103_CLOCK_OUT_ENABLED ; m88ds3103_pdata . envelope_mode = 0 ; m88ds3103_pdata . lnb_hv_pol = 1 ; m88ds3103_pdata . lnb_en_pol = 0 ; memset ( & board_info , 0 , sizeof ( board_info ) ) ; strlcpy ( board_info . type , \"m88ds3103\" , I2C_NAME_SIZE ) ; board_info . addr = 0x68 ; board_info . platform_data = & m88ds3103_pdata ; request_module ( \"m88ds3103\" ) ; client = i2c_new_device ( & d -> i2c_adap , & board_info ) ; if ( client == NULL || client -> dev . driver == NULL ) return - ENODEV ; if ( ! try_module_get ( client -> dev . driver -> owner ) ) { i2c_unregister_device ( client ) ; return - ENODEV ; } adap -> fe_adap [ 0 ] . fe = m88ds3103_pdata . get_dvb_frontend ( client ) ; i2c_adapter = m88ds3103_pdata . get_i2c_adapter ( client ) ; state -> i2c_client_demod = client ; ts2020_config . fe = adap -> fe_adap [ 0 ] . fe ; memset ( & board_info , 0 , sizeof ( board_info ) ) ; strlcpy ( board_info . type , \"ts2022\" , I2C_NAME_SIZE ) ; board_info . addr = 0x60 ; board_info . platform_data = & ts2020_config ; request_module ( \"ts2020\" ) ; client = i2c_new_device ( i2c_adapter , & board_info ) ; if ( client == NULL || client -> dev . driver == NULL ) { dvb_frontend_detach ( adap -> fe_adap [ 0 ] . fe ) ; return - ENODEV ; } if ( ! try_module_get ( client -> dev . driver -> owner ) ) { i2c_unregister_device ( client ) ; dvb_frontend_detach ( adap -> fe_adap [ 0 ] . fe ) ; return - ENODEV ; } adap -> fe_adap [ 0 ] . fe -> ops . read_signal_strength = adap -> fe_adap [ 0 ] . fe -> ops . tuner_ops . get_rf_strength ; state -> i2c_client_tuner = client ; state -> fe_read_status = adap -> fe_adap [ 0 ] . fe -> ops . read_status ; adap -> fe_adap [ 0 ] . fe -> ops . read_status = tt_s2_4600_read_status ; state -> last_lock = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> d -> priv <S2SV_ModEnd> ; struct i2c_adapter <S2SV_ModStart> { } ; mutex_lock ( & d -> data_mutex ) ; state -> data [ 0 ] = 0xe ; state -> data [ 1 ] = 0x80 ; state -> data [ 2 ] = 0x0 ; <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 0x02 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> 300 ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 0x83 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 0x83 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> ( d , state -> data , 1 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> err ( \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; mutex_unlock ( & d -> data_mutex\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12818\n\n```\nCWE-476 static int nfc_llcp_build_gb ( struct nfc_llcp_local * local ) { <S2SV_StartBug> u8 * gb_cur , * version_tlv , version , version_length ; <S2SV_EndBug> u8 * lto_tlv , lto_length ; u8 * wks_tlv , wks_length ; u8 * miux_tlv , miux_length ; __be16 wks = cpu_to_be16 ( local -> local_wks ) ; u8 gb_len = 0 ; int ret = 0 ; version = LLCP_VERSION_11 ; version_tlv = nfc_llcp_build_tlv ( LLCP_TLV_VERSION , & version , 1 , & version_length ) ; <S2SV_StartBug> gb_len += version_length ; <S2SV_EndBug> lto_tlv = nfc_llcp_build_tlv ( LLCP_TLV_LTO , & local -> lto , 1 , & lto_length ) ; <S2SV_StartBug> gb_len += lto_length ; <S2SV_EndBug> pr_debug ( \"Local<S2SV_blank>wks<S2SV_blank>0x%lx\\\\n\" , local -> local_wks ) ; wks_tlv = nfc_llcp_build_tlv ( LLCP_TLV_WKS , ( u8 * ) & wks , 2 , & wks_length ) ; <S2SV_StartBug> gb_len += wks_length ; <S2SV_EndBug> miux_tlv = nfc_llcp_build_tlv ( LLCP_TLV_MIUX , ( u8 * ) & local -> miux , 0 , <S2SV_StartBug> & miux_length ) ; <S2SV_EndBug> gb_len += miux_length ; gb_len += ARRAY_SIZE ( llcp_magic ) ; if ( gb_len > NFC_MAX_GT_LEN ) { ret = - EINVAL ; goto out ; } gb_cur = local -> gb ; memcpy ( gb_cur , llcp_magic , ARRAY_SIZE ( llcp_magic ) ) ; gb_cur += ARRAY_SIZE ( llcp_magic ) ; memcpy ( gb_cur , version_tlv , version_length ) ; gb_cur += version_length ; memcpy ( gb_cur , lto_tlv , lto_length ) ; gb_cur += lto_length ; memcpy ( gb_cur , wks_tlv , wks_length ) ; gb_cur += wks_length ; memcpy ( gb_cur , miux_tlv , miux_length ) ; gb_cur += miux_length ; local -> gb_len = gb_len ; out : kfree ( version_tlv ) ; kfree ( lto_tlv ) ; kfree ( wks_tlv ) ; kfree ( miux_tlv ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * gb_cur , version , version_length ; u8 lto_length , wks_length , miux_length ; u8 * version_tlv = NULL , * lto_tlv = NULL , * wks_tlv = NULL , * miux_tlv = NULL <S2SV_ModEnd> ; __be16 wks <S2SV_ModStart> version_length ) ; if ( ! version_tlv ) { ret = - ENOMEM ; goto out ; } <S2SV_ModStart> lto_length ) ; if ( ! lto_tlv ) { ret = - ENOMEM ; goto out ; } <S2SV_ModStart> wks_length ) ; if ( ! wks_tlv ) { ret = - ENOMEM ; goto out ; } <S2SV_ModStart> miux_length ) ; if ( ! miux_tlv ) { ret = - ENOMEM ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9228\n\n```\nCWE-787 static int next_state_class ( CClassNode * cc , OnigCodePoint * vs , enum CCVALTYPE * type , enum CCSTATE * state , ScanEnv * env ) { int r ; if ( * state == CCS_RANGE ) return ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE ; if ( * state == CCS_VALUE && * type != CCV_CLASS ) { if ( * type == CCV_SB ) BITSET_SET_BIT ( cc -> bs , ( int ) ( * vs ) ) ; else if ( * type == CCV_CODE_POINT ) { r = add_code_range ( & ( cc -> mbuf ) , env , * vs , * vs ) ; if ( r < 0 ) return r ; } } <S2SV_StartBug> * state = CCS_VALUE ; <S2SV_EndBug> * type = CCV_CLASS ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( * state != CCS_START )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5355\n\n```\nCWE-20 static gboolean parse_toshiba_packet ( FILE_T fh , struct wtap_pkthdr * phdr , Buffer * buf , int * err , gchar * * err_info ) { union wtap_pseudo_header * pseudo_header = & phdr -> pseudo_header ; char line [ TOSHIBA_LINE_LENGTH ] ; int num_items_scanned ; <S2SV_StartBug> int pkt_len , pktnum , hr , min , sec , csec ; <S2SV_EndBug> char channel [ 10 ] , direction [ 10 ] ; int i , hex_lines ; guint8 * pd ; if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } num_items_scanned = sscanf ( line , \"%9d]<S2SV_blank>%2d:%2d:%2d.%9d<S2SV_blank>%9s<S2SV_blank>%9s\" , & pktnum , & hr , & min , & sec , & csec , channel , direction ) ; if ( num_items_scanned != 7 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>record<S2SV_blank>header<S2SV_blank>isn\\'t<S2SV_blank>valid\" ) ; return FALSE ; } do { if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } line [ 16 ] = '\\\\0' ; } while ( strcmp ( line , \"OFFSET<S2SV_blank>0001-0203\" ) != 0 ) ; <S2SV_StartBug> num_items_scanned = sscanf ( line + 64 , \"LEN=%9d\" , & pkt_len ) ; <S2SV_EndBug> if ( num_items_scanned != 1 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>OFFSET<S2SV_blank>line<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>valid<S2SV_blank>LEN<S2SV_blank>item\" ) ; return FALSE ; } <S2SV_StartBug> phdr -> rec_type = REC_TYPE_PACKET ; <S2SV_EndBug> phdr -> presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN ; phdr -> ts . secs = hr * 3600 + min * 60 + sec ; phdr -> ts . nsecs = csec * 10000000 ; phdr -> caplen = pkt_len ; phdr -> len = pkt_len ; switch ( channel [ 0 ] ) { case 'B' : phdr -> pkt_encap = WTAP_ENCAP_ISDN ; pseudo_header -> isdn . uton = ( direction [ 0 ] == 'T' ) ; pseudo_header -> isdn . channel = ( guint8 ) strtol ( & channel [ 1 ] , NULL , 10 ) ; break ; case 'D' : phdr -> pkt_encap = WTAP_ENCAP_ISDN ; pseudo_header -> isdn . uton = ( direction [ 0 ] == 'T' ) ; pseudo_header -> isdn . channel = 0 ; break ; default : phdr -> pkt_encap = WTAP_ENCAP_ETHERNET ; pseudo_header -> eth . fcs_len = - 1 ; break ; } <S2SV_StartBug> ws_buffer_assure_space ( buf , TOSHIBA_MAX_PACKET_LEN ) ; <S2SV_EndBug> pd = ws_buffer_start_ptr ( buf ) ; hex_lines = pkt_len / 16 + ( ( pkt_len % 16 ) ? 1 : 0 ) ; for ( i = 0 ; i < hex_lines ; i ++ ) { if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } if ( ! parse_single_hex_dump_line ( line , pd , i * 16 ) ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>hex<S2SV_blank>dump<S2SV_blank>not<S2SV_blank>valid\" ) ; return FALSE ; } } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int num_items_scanned ; guint pkt_len ; int <S2SV_ModEnd> pktnum , hr <S2SV_ModStart> + 64 , \"LEN=%9u\" <S2SV_ModEnd> , & pkt_len <S2SV_ModStart> FALSE ; } if ( pkt_len > WTAP_MAX_PACKET_SIZE ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup_printf ( \"toshiba:<S2SV_blank>File<S2SV_blank>has<S2SV_blank>%u-byte<S2SV_blank>packet,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>maximum<S2SV_blank>of<S2SV_blank>%u\" , pkt_len , WTAP_MAX_PACKET_SIZE ) ; return FALSE ; } <S2SV_ModStart> ( buf , pkt_len <S2SV_ModEnd> ) ; pd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6418\n\n```\nCWE-399 static int ceph_x_verify_authorizer_reply ( struct ceph_auth_client * ac , struct ceph_authorizer * a , size_t len ) { struct ceph_x_authorizer * au = ( void * ) a ; struct ceph_x_ticket_handler * th ; int ret = 0 ; struct ceph_x_authorize_reply reply ; <S2SV_StartBug> void * p = au -> reply_buf ; <S2SV_EndBug> void * end = p + sizeof ( au -> reply_buf ) ; th = get_ticket_handler ( ac , au -> service ) ; if ( IS_ERR ( th ) ) return PTR_ERR ( th ) ; <S2SV_StartBug> ret = ceph_x_decrypt ( & th -> session_key , & p , end , & reply , sizeof ( reply ) ) ; <S2SV_EndBug> if ( ret < 0 ) return ret ; if ( ret != sizeof ( reply ) ) return - EPERM ; if ( au -> nonce + 1 != le64_to_cpu ( reply . nonce_plus_one ) ) ret = - EPERM ; else ret = 0 ; dout ( \"verify_authorizer_reply<S2SV_blank>nonce<S2SV_blank>%llx<S2SV_blank>got<S2SV_blank>%llx<S2SV_blank>ret<S2SV_blank>%d\\\\n\" , au -> nonce , le64_to_cpu ( reply . nonce_plus_one ) , ret ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; void * preply = & reply ; void * <S2SV_ModStart> end , & preply <S2SV_ModEnd> , sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8073\n\n```\nCWE-119 char * irc_ctcp_dcc_filename_without_quotes ( const char * filename ) { int length ; length = strlen ( filename ) ; <S2SV_StartBug> if ( length > 0 ) <S2SV_EndBug> { if ( ( filename [ 0 ] == \\'\\\\\"\\' ) && ( filename [ length - 1 ] == \\'\\\\\"\\' ) ) return weechat_strndup ( filename + 1 , length - 2 ) ; } return strdup ( filename ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( length > 1 <S2SV_ModEnd> ) { if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 static void handle_ppp ( netdissect_options * ndo , u_int proto , const u_char * p , int length ) { if ( ( proto & 0xff00 ) == 0x7e00 ) { ppp_hdlc ( ndo , p - 1 , length ) ; return ; } switch ( proto ) { case PPP_LCP : case PPP_IPCP : case PPP_OSICP : case PPP_MPLSCP : case PPP_IPV6CP : case PPP_CCP : case PPP_BACP : handle_ctrl_proto ( ndo , proto , p , length ) ; break ; case PPP_ML : handle_mlppp ( ndo , p , length ) ; break ; case PPP_CHAP : handle_chap ( ndo , p , length ) ; break ; case PPP_PAP : handle_pap ( ndo , p , length ) ; break ; case PPP_BAP : handle_bap ( ndo , p , length ) ; break ; case ETHERTYPE_IP : case PPP_VJNC : case PPP_IP : ip_print ( ndo , p , length ) ; break ; case ETHERTYPE_IPV6 : case PPP_IPV6 : ip6_print ( ndo , p , length ) ; break ; case ETHERTYPE_IPX : case PPP_IPX : ipx_print ( ndo , p , length ) ; break ; case PPP_OSI : <S2SV_StartBug> isoclns_print ( ndo , p , length , length ) ; <S2SV_EndBug> break ; case PPP_MPLS_UCAST : case PPP_MPLS_MCAST : mpls_print ( ndo , p , length ) ; break ; case PPP_COMP : ND_PRINT ( ( ndo , \"compressed<S2SV_blank>PPP<S2SV_blank>data\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , tok2str ( ppptype2str , \"unknown<S2SV_blank>PPP<S2SV_blank>protocol<S2SV_blank>(0x%04x)\" , proto ) ) ) ; print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , length ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 static void * bpf_any_get ( void * raw , enum bpf_type type ) { switch ( type ) { case BPF_TYPE_PROG : <S2SV_StartBug> atomic_inc ( & ( ( struct bpf_prog * ) raw ) -> aux -> refcnt ) ; <S2SV_EndBug> break ; case BPF_TYPE_MAP : <S2SV_StartBug> bpf_map_inc ( raw , true ) ; <S2SV_EndBug> break ; default : WARN_ON_ONCE ( 1 ) ; break ; } return raw ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case BPF_TYPE_PROG : raw = bpf_prog_inc ( raw <S2SV_ModEnd> ) ; break <S2SV_ModStart> case BPF_TYPE_MAP : raw =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3315\n\n```\nCWE-59 static bool dump_fd_info ( const char * dest_filename , char * source_filename , int source_base_ofs , uid_t uid , gid_t gid ) { <S2SV_StartBug> FILE * fp = fopen ( dest_filename , \"w\" ) ; <S2SV_EndBug> if ( ! fp ) return false ; unsigned fd = 0 ; while ( fd <= 99999 ) { sprintf ( source_filename + source_base_ofs , \"fd/%u\" , fd ) ; char * name = malloc_readlink ( source_filename ) ; if ( ! name ) break ; fprintf ( fp , \"%u:%s\\\\n\" , fd , name ) ; free ( name ) ; sprintf ( source_filename + source_base_ofs , \"fdinfo/%u\" , fd ) ; fd ++ ; FILE * in = fopen ( source_filename , \"r\" ) ; if ( ! in ) continue ; char buf [ 128 ] ; while ( fgets ( buf , sizeof ( buf ) - 1 , in ) ) { char * eol = strchrnul ( buf , '\\\\n' ) ; eol [ 0 ] = '\\\\n' ; eol [ 1 ] = '\\\\0' ; fputs ( buf , fp ) ; } fclose ( in ) ; } const int dest_fd = fileno ( fp ) ; if ( fchown ( dest_fd , uid , gid ) < 0 ) { perror_msg ( \"Can\\'t<S2SV_blank>change<S2SV_blank>\\'%s\\'<S2SV_blank>ownership<S2SV_blank>to<S2SV_blank>%lu:%lu\" , dest_filename , ( long ) uid , ( long ) gid ) ; fclose ( fp ) ; unlink ( dest_filename ) ; return false ; } fclose ( fp ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( dest_filename , \"wx\" <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void predict_and_reconstruct_intra_block ( int plane , int block , <S2SV_EndBug> BLOCK_SIZE plane_bsize , <S2SV_StartBug> TX_SIZE tx_size , void * arg ) { <S2SV_EndBug> struct intra_args * const args = ( struct intra_args * ) arg ; VP9_COMMON * const cm = args -> cm ; MACROBLOCKD * const xd = args -> xd ; struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; <S2SV_StartBug> MODE_INFO * const mi = xd -> mi [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> const MB_PREDICTION_MODE mode = ( plane == 0 ) ? get_y_mode ( mi , block ) <S2SV_EndBug> : mi -> mbmi . uv_mode ; int x , y ; uint8_t * dst ; <S2SV_StartBug> txfrm_block_to_raster_xy ( plane_bsize , tx_size , block , & x , & y ) ; <S2SV_EndBug> <S2SV_StartBug> dst = & pd -> dst . buf [ 4 * y * pd -> dst . stride + 4 * x ] ; <S2SV_EndBug> <S2SV_StartBug> vp9_predict_intra_block ( xd , block >> ( tx_size << 1 ) , <S2SV_EndBug> b_width_log2 ( plane_bsize ) , tx_size , mode , dst , pd -> dst . stride , dst , pd -> dst . stride , x , y , plane ) ; <S2SV_StartBug> if ( ! mi -> mbmi . skip ) { <S2SV_EndBug> <S2SV_StartBug> const int eob = vp9_decode_block_tokens ( cm , xd , plane , block , <S2SV_EndBug> plane_bsize , x , y , tx_size , args -> r ) ; inverse_transform_block ( xd , plane , block , tx_size , dst , pd -> dst . stride , eob ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void predict_and_reconstruct_intra_block ( MACROBLOCKD * const xd , vpx_reader * r , MB_MODE_INFO * const mbmi , int plane , int row , int col <S2SV_ModEnd> , TX_SIZE tx_size <S2SV_ModStart> , TX_SIZE tx_size ) { <S2SV_ModEnd> struct macroblockd_plane * <S2SV_ModStart> plane ] ; PREDICTION_MODE <S2SV_ModEnd> mode = ( <S2SV_ModStart> 0 ) ? mbmi -> mode : mbmi -> uv_mode ; <S2SV_ModEnd> uint8_t * dst <S2SV_ModStart> * dst ; <S2SV_ModEnd> dst = & <S2SV_ModStart> [ 4 * row <S2SV_ModEnd> * pd -> <S2SV_ModStart> + 4 * col ] ; if ( mbmi -> sb_type < BLOCK_8X8 ) if ( plane == 0 ) mode = xd -> mi [ 0 ] -> bmi [ ( row <S2SV_ModEnd> << 1 ) <S2SV_ModStart> << 1 ) + col ] . as_mode ; vp9_predict_intra_block ( xd , pd -> n4_wl , tx_size , mode , dst , pd -> dst . stride , dst , pd -> dst . stride , col , row <S2SV_ModEnd> , plane ) <S2SV_ModStart> if ( ! mbmi -> <S2SV_ModEnd> skip ) { <S2SV_ModStart> ) { const TX_TYPE tx_type = ( plane || xd -> lossless ) ? DCT_DCT : intra_mode_to_tx_type_lookup [ mode ] ; const scan_order * sc = ( plane || xd -> lossless ) ? & vp9_default_scan_orders [ tx_size ] : & vp9_scan_orders [ tx_size ] [ tx_type ] ; const <S2SV_ModStart> = vp9_decode_block_tokens ( xd , plane , sc , col , row , tx_size , r , mbmi -> segment_id ) ; inverse_transform_block_intra ( xd , plane , tx_type , tx_size , dst , pd -> dst . stride , <S2SV_ModEnd> eob ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9229\n\n```\nCWE-476 static int forward_search_range ( regex_t * reg , const UChar * str , const UChar * end , UChar * s , UChar * range , UChar * * low , UChar * * high , UChar * * low_prev ) { UChar * p , * pprev = ( UChar * ) NULL ; # ifdef ONIG_DEBUG_SEARCH fprintf ( stderr , \"forward_search_range:<S2SV_blank>str:<S2SV_blank>%d,<S2SV_blank>end:<S2SV_blank>%d,<S2SV_blank>s:<S2SV_blank>%d,<S2SV_blank>range:<S2SV_blank>%d\\\\n\" , ( int ) str , ( int ) end , ( int ) s , ( int ) range ) ; # endif p = s ; if ( reg -> dmin > 0 ) { if ( ONIGENC_IS_SINGLEBYTE ( reg -> enc ) ) { p += reg -> dmin ; } else { UChar * q = p + reg -> dmin ; if ( q >= end ) return 0 ; while ( p < q ) p += enclen ( reg -> enc , p ) ; } } retry : switch ( reg -> optimize ) { case ONIG_OPTIMIZE_EXACT : p = slow_search ( reg -> enc , reg -> exact , reg -> exact_end , p , end , range ) ; break ; case ONIG_OPTIMIZE_EXACT_IC : p = slow_search_ic ( reg -> enc , reg -> case_fold_flag , reg -> exact , reg -> exact_end , p , end , range ) ; break ; case ONIG_OPTIMIZE_EXACT_BM : p = bm_search ( reg , reg -> exact , reg -> exact_end , p , end , range ) ; break ; case ONIG_OPTIMIZE_EXACT_BM_NOT_REV : p = bm_search_notrev ( reg , reg -> exact , reg -> exact_end , p , end , range ) ; break ; case ONIG_OPTIMIZE_MAP : p = map_search ( reg -> enc , reg -> map , p , range ) ; break ; } if ( p && p < range ) { if ( p - reg -> dmin < s ) { retry_gate : pprev = p ; p += enclen ( reg -> enc , p ) ; goto retry ; } if ( reg -> sub_anchor ) { UChar * prev ; switch ( reg -> sub_anchor ) { case ANCHOR_BEGIN_LINE : if ( ! ON_STR_BEGIN ( p ) ) { prev = onigenc_get_prev_char_head ( reg -> enc , ( pprev ? pprev : str ) , p ) ; if ( ! ONIGENC_IS_MBC_NEWLINE ( reg -> enc , prev , end ) ) goto retry_gate ; } break ; case ANCHOR_END_LINE : if ( ON_STR_END ( p ) ) { # ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE prev = ( UChar * ) onigenc_get_prev_char_head ( reg -> enc , ( pprev ? pprev : str ) , p ) ; if ( prev && ONIGENC_IS_MBC_NEWLINE ( reg -> enc , prev , end ) ) goto retry_gate ; # endif } else if ( ! ONIGENC_IS_MBC_NEWLINE ( reg -> enc , p , end ) # ifdef USE_CRNL_AS_LINE_TERMINATOR && ! ONIGENC_IS_MBC_CRNL ( reg -> enc , p , end ) # endif ) goto retry_gate ; break ; } } if ( reg -> dmax == 0 ) { * low = p ; if ( low_prev ) { if ( * low > s ) * low_prev = onigenc_get_prev_char_head ( reg -> enc , s , p ) ; else * low_prev = onigenc_get_prev_char_head ( reg -> enc , ( pprev ? pprev : str ) , p ) ; } } else { if ( reg -> dmax != ONIG_INFINITE_DISTANCE ) { <S2SV_StartBug> * low = p - reg -> dmax ; <S2SV_EndBug> if ( * low > s ) { * low = onigenc_get_right_adjust_char_head_with_prev ( reg -> enc , s , * low , ( const UChar * * ) low_prev ) ; if ( low_prev && IS_NULL ( * low_prev ) ) * low_prev = onigenc_get_prev_char_head ( reg -> enc , ( pprev ? pprev : s ) , * low ) ; } else { if ( low_prev ) * low_prev = onigenc_get_prev_char_head ( reg -> enc , <S2SV_StartBug> ( pprev ? pprev : str ) , * low ) ; <S2SV_EndBug> } } } * high = p - reg -> dmin ; # ifdef ONIG_DEBUG_SEARCH fprintf ( stderr , \"forward_search_range<S2SV_blank>success:<S2SV_blank>low:<S2SV_blank>%d,<S2SV_blank>high:<S2SV_blank>%d,<S2SV_blank>dmin:<S2SV_blank>%d,<S2SV_blank>dmax:<S2SV_blank>%d\\\\n\" , ( int ) ( * low - str ) , ( int ) ( * high - str ) , reg -> dmin , reg -> dmax ) ; # endif return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ONIG_INFINITE_DISTANCE ) { if ( p - str < reg -> dmax ) { * low = ( UChar * ) str ; if ( low_prev ) * low_prev = onigenc_get_prev_char_head ( reg -> enc , str , * low ) ; } else { <S2SV_ModStart> low ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0587\n\n```\nCWE-119 void impeg2d_dec_hdr ( void * pv_dec , impeg2d_video_decode_ip_t * ps_ip , impeg2d_video_decode_op_t * ps_op ) { UWORD32 u4_bits_read ; dec_state_t * ps_dec ; ps_dec = ( dec_state_t * ) pv_dec ; ps_op -> s_ivd_video_decode_op_t . u4_error_code = 0 ; impeg2d_bit_stream_init ( & ( ps_dec -> s_bit_stream ) , ps_ip -> s_ivd_video_decode_ip_t . pv_stream_buffer , ps_ip -> s_ivd_video_decode_ip_t . u4_num_Bytes ) ; { { IMPEG2D_ERROR_CODES_T e_error ; e_error = impeg2d_process_video_header ( ps_dec ) ; if ( ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE != e_error ) { ps_op -> s_ivd_video_decode_op_t . u4_error_code = e_error ; u4_bits_read = impeg2d_bit_stream_num_bits_read ( & ps_dec -> s_bit_stream ) ; ps_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed = u4_bits_read >> 3 ; if ( ps_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed > ps_ip -> s_ivd_video_decode_ip_t . u4_num_Bytes ) { ps_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed = ps_ip -> s_ivd_video_decode_ip_t . u4_num_Bytes ; } if ( ps_op -> s_ivd_video_decode_op_t . u4_error_code == 0 ) ps_op -> s_ivd_video_decode_op_t . u4_error_code = e_error ; <S2SV_StartBug> impeg2d_next_code ( ps_dec , SEQUENCE_HEADER_CODE ) ; <S2SV_EndBug> return ; } } ps_op -> s_ivd_video_decode_op_t . u4_pic_ht = ps_dec -> u2_vertical_size ; ps_op -> s_ivd_video_decode_op_t . u4_pic_wd = ps_dec -> u2_horizontal_size ; ps_op -> s_ivd_video_decode_op_t . e_pic_type = IV_NA_FRAME ; ps_op -> s_ivd_video_decode_op_t . u4_error_code = IV_SUCCESS ; u4_bits_read = impeg2d_bit_stream_num_bits_read ( & ps_dec -> s_bit_stream ) ; ps_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed = u4_bits_read >> 3 ; if ( ps_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed > ps_ip -> s_ivd_video_decode_ip_t . u4_num_Bytes ) { ps_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed = ps_ip -> s_ivd_video_decode_ip_t . u4_num_Bytes ; } ps_op -> s_ivd_video_decode_op_t . u4_frame_decoded_flag = 0 ; ps_dec -> u2_header_done = 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = e_error ; if ( IMPEG2D_UNSUPPORTED_DIMENSIONS == e_error ) { ps_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed = 0 ; ps_dec -> u2_header_done = 0 ; ps_op -> s_ivd_video_decode_op_t . u4_pic_ht = ps_dec -> u2_reinit_max_height ; ps_op -> s_ivd_video_decode_op_t . u4_pic_wd = ps_dec -> u2_reinit_max_width ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { unsigned x , y ; AVFilterContext * ctx = inlink -> dst ; VignetteContext * s = ctx -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; AVFrame * out ; out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; if ( s -> eval_mode == EVAL_MODE_FRAME ) update_context ( s , inlink , in ) ; if ( s -> desc -> flags & AV_PIX_FMT_FLAG_RGB ) { uint8_t * dst = out -> data [ 0 ] ; const uint8_t * src = in -> data [ 0 ] ; const float * fmap = s -> fmap ; const int dst_linesize = out -> linesize [ 0 ] ; const int src_linesize = in -> linesize [ 0 ] ; const int fmap_linesize = s -> fmap_linesize ; for ( y = 0 ; y < inlink -> h ; y ++ ) { uint8_t * dstp = dst ; const uint8_t * srcp = src ; for ( x = 0 ; x < inlink -> w ; x ++ , dstp += 3 , srcp += 3 ) { const float f = fmap [ x ] ; dstp [ 0 ] = av_clip_uint8 ( srcp [ 0 ] * f + get_dither_value ( s ) ) ; dstp [ 1 ] = av_clip_uint8 ( srcp [ 1 ] * f + get_dither_value ( s ) ) ; dstp [ 2 ] = av_clip_uint8 ( srcp [ 2 ] * f + get_dither_value ( s ) ) ; } dst += dst_linesize ; src += src_linesize ; fmap += fmap_linesize ; } } else { int plane ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && in -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> uint8_t * dst = out -> data [ plane ] ; const uint8_t * src = in -> data [ plane ] ; const float * fmap = s -> fmap ; const int dst_linesize = out -> linesize [ plane ] ; const int src_linesize = in -> linesize [ plane ] ; const int fmap_linesize = s -> fmap_linesize ; const int chroma = plane == 1 || plane == 2 ; const int hsub = chroma ? s -> desc -> log2_chroma_w : 0 ; const int vsub = chroma ? s -> desc -> log2_chroma_h : 0 ; const int w = FF_CEIL_RSHIFT ( inlink -> w , hsub ) ; const int h = FF_CEIL_RSHIFT ( inlink -> h , vsub ) ; for ( y = 0 ; y < h ; y ++ ) { uint8_t * dstp = dst ; const uint8_t * srcp = src ; for ( x = 0 ; x < w ; x ++ ) { const double dv = get_dither_value ( s ) ; if ( chroma ) * dstp ++ = av_clip_uint8 ( fmap [ x << hsub ] * ( * srcp ++ - 127 ) + 127 + dv ) ; else * dstp ++ = av_clip_uint8 ( fmap [ x ] * * srcp ++ + dv ) ; } dst += dst_linesize ; src += src_linesize ; fmap += fmap_linesize << vsub ; } } } return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in -> data [ plane ] && in -> linesize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3611\n\n```\nCWE-362 void __kvm_migrate_pit_timer ( struct kvm_vcpu * vcpu ) { struct kvm_pit * pit = vcpu -> kvm -> arch . vpit ; struct hrtimer * timer ; if ( ! kvm_vcpu_is_bsp ( vcpu ) || ! pit ) return ; timer = & pit -> pit_state . timer ; <S2SV_StartBug> if ( hrtimer_cancel ( timer ) ) <S2SV_EndBug> hrtimer_start_expires ( timer , HRTIMER_MODE_ABS ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . timer ; mutex_lock ( & pit -> pit_state . lock ) ; <S2SV_ModStart> HRTIMER_MODE_ABS ) ; mutex_unlock ( & pit -> pit_state . lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int em_loop ( struct x86_emulate_ctxt * ctxt ) <S2SV_StartBug> { <S2SV_EndBug> register_address_increment ( ctxt , reg_rmw ( ctxt , VCPU_REGS_RCX ) , - 1 ) ; if ( ( address_mask ( ctxt , reg_read ( ctxt , VCPU_REGS_RCX ) ) != 0 ) && ( ctxt -> b == 0xe2 || test_cc ( ctxt -> b ^ 0x5 , ctxt -> eflags ) ) ) <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> <S2SV_StartBug> return X86EMUL_CONTINUE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt ) { int rc = X86EMUL_CONTINUE ; <S2SV_ModStart> ) ) ) rc = <S2SV_ModStart> ) ; return rc <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5547\n\n```\nCWE-119 static ssize_t k90_show_macro_mode ( struct device * dev , struct device_attribute * attr , char * buf ) { int ret ; struct usb_interface * usbif = to_usb_interface ( dev -> parent ) ; struct usb_device * usbdev = interface_to_usbdev ( usbif ) ; const char * macro_mode ; <S2SV_StartBug> char data [ 8 ] ; <S2SV_EndBug> ret = usb_control_msg ( usbdev , usb_rcvctrlpipe ( usbdev , 0 ) , K90_REQUEST_GET_MODE , USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE , 0 , 0 , data , 2 , USB_CTRL_SET_TIMEOUT ) ; if ( ret < 0 ) { dev_warn ( dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>K90<S2SV_blank>initial<S2SV_blank>mode<S2SV_blank>(error<S2SV_blank>%d).\\\\n\" , ret ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> switch ( data [ 0 ] ) { case K90_MACRO_MODE_HW : macro_mode = \"HW\" ; break ; case K90_MACRO_MODE_SW : macro_mode = \"SW\" ; break ; default : dev_warn ( dev , \"K90<S2SV_blank>in<S2SV_blank>unknown<S2SV_blank>mode:<S2SV_blank>%02hhx.\\\\n\" , data [ 0 ] ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return snprintf ( buf , PAGE_SIZE , \"%s\\\\n\" , macro_mode ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> macro_mode ; char * data ; data = kmalloc ( 2 , GFP_KERNEL ) ; if ( ! data ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> ret ) ; ret = <S2SV_ModEnd> - EIO ; <S2SV_ModStart> - EIO ; goto out ; <S2SV_ModStart> ] ) ; ret = <S2SV_ModEnd> - EIO ; <S2SV_ModStart> - EIO ; goto out ; } ret = snprintf ( buf , PAGE_SIZE , \"%s\\\\n\" , macro_mode ) ; out : kfree ( data ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 TSQuery QTN2QT ( QTNode * in ) { TSQuery out ; int len ; int sumlen = 0 , nnode = 0 ; QTN2QTState state ; <S2SV_StartBug> cntsize ( in , & sumlen , & nnode ) ; <S2SV_EndBug> len = COMPUTESIZE ( nnode , sumlen ) ; out = ( TSQuery ) palloc0 ( len ) ; SET_VARSIZE ( out , len ) ; out -> size = nnode ; state . curitem = GETQUERY ( out ) ; state . operand = state . curoperand = GETOPERAND ( out ) ; fillQT ( & state , in ) ; return out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , & nnode ) ; if ( TSQUERY_TOO_BIG ( nnode , sumlen ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"tsquery<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_roi_map ( const vpx_codec_enc_cfg_t * cfg , vpx_codec_ctx_t * codec ) { unsigned int i ; <S2SV_StartBug> vpx_roi_map_t roi = { 0 } ; <S2SV_EndBug> roi . rows = ( cfg -> g_h + 15 ) / 16 ; roi . cols = ( cfg -> g_w + 15 ) / 16 ; roi . delta_q [ 0 ] = 0 ; roi . delta_q [ 1 ] = - 2 ; roi . delta_q [ 2 ] = - 4 ; roi . delta_q [ 3 ] = - 6 ; roi . delta_lf [ 0 ] = 0 ; roi . delta_lf [ 1 ] = 1 ; roi . delta_lf [ 2 ] = 2 ; roi . delta_lf [ 3 ] = 3 ; roi . static_threshold [ 0 ] = 1500 ; roi . static_threshold [ 1 ] = 1000 ; roi . static_threshold [ 2 ] = 500 ; roi . static_threshold [ 3 ] = 0 ; roi . roi_map = ( uint8_t * ) malloc ( roi . rows * roi . cols ) ; for ( i = 0 ; i < roi . rows * roi . cols ; ++ i ) roi . roi_map [ i ] = i % 4 ; if ( vpx_codec_control ( codec , VP8E_SET_ROI_MAP , & roi ) ) die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>ROI<S2SV_blank>map\" ) ; free ( roi . roi_map ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; vpx_roi_map_t roi ; memset ( & roi , 0 , sizeof ( roi ) ) <S2SV_ModEnd> ; roi .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7024\n\n```\nCWE-119 static int jpeg2000_decode_tile ( Jpeg2000DecoderContext * s , Jpeg2000Tile * tile , AVFrame * picture ) { int compno , reslevelno , bandno ; int x , y ; uint8_t * line ; Jpeg2000T1Context t1 ; for ( compno = 0 ; compno < s -> ncomponents ; compno ++ ) { Jpeg2000Component * comp = tile -> comp + compno ; Jpeg2000CodingStyle * codsty = tile -> codsty + compno ; for ( reslevelno = 0 ; reslevelno < codsty -> nreslevels2decode ; reslevelno ++ ) { Jpeg2000ResLevel * rlevel = comp -> reslevel + reslevelno ; for ( bandno = 0 ; bandno < rlevel -> nbands ; bandno ++ ) { int nb_precincts , precno ; Jpeg2000Band * band = rlevel -> band + bandno ; int cblkno = 0 , bandpos ; bandpos = bandno + ( reslevelno > 0 ) ; if ( band -> coord [ 0 ] [ 0 ] == band -> coord [ 0 ] [ 1 ] || band -> coord [ 1 ] [ 0 ] == band -> coord [ 1 ] [ 1 ] ) continue ; nb_precincts = rlevel -> num_precincts_x * rlevel -> num_precincts_y ; for ( precno = 0 ; precno < nb_precincts ; precno ++ ) { Jpeg2000Prec * prec = band -> prec + precno ; for ( cblkno = 0 ; cblkno < prec -> nb_codeblocks_width * prec -> nb_codeblocks_height ; cblkno ++ ) { int x , y ; Jpeg2000Cblk * cblk = prec -> cblk + cblkno ; decode_cblk ( s , codsty , & t1 , cblk , cblk -> coord [ 0 ] [ 1 ] - cblk -> coord [ 0 ] [ 0 ] , cblk -> coord [ 1 ] [ 1 ] - cblk -> coord [ 1 ] [ 0 ] , bandpos ) ; x = cblk -> coord [ 0 ] [ 0 ] ; y = cblk -> coord [ 1 ] [ 0 ] ; if ( codsty -> transform == FF_DWT97 ) dequantization_float ( x , y , cblk , comp , & t1 , band ) ; else dequantization_int ( x , y , cblk , comp , & t1 , band ) ; } } } } ff_dwt_decode ( & comp -> dwt , codsty -> transform == FF_DWT97 ? ( void * ) comp -> f_data : ( void * ) comp -> i_data ) ; } if ( tile -> codsty [ 0 ] . mct ) mct_decode ( s , tile ) ; if ( s -> cdef [ 0 ] < 0 ) { for ( x = 0 ; x < s -> ncomponents ; x ++ ) s -> cdef [ x ] = x + 1 ; if ( ( s -> ncomponents & 1 ) == 0 ) s -> cdef [ s -> ncomponents - 1 ] = 0 ; } if ( s -> precision <= 8 ) { for ( compno = 0 ; compno < s -> ncomponents ; compno ++ ) { Jpeg2000Component * comp = tile -> comp + compno ; Jpeg2000CodingStyle * codsty = tile -> codsty + compno ; float * datap = comp -> f_data ; int32_t * i_datap = comp -> i_data ; int cbps = s -> cbps [ compno ] ; int w = tile -> comp [ compno ] . coord [ 0 ] [ 1 ] - s -> image_offset_x ; int planar = ! ! picture -> data [ 2 ] ; int pixelsize = planar ? 1 : s -> ncomponents ; int plane = 0 ; if ( planar ) plane = s -> cdef [ compno ] ? s -> cdef [ compno ] - 1 : ( s -> ncomponents - 1 ) ; y = tile -> comp [ compno ] . coord [ 1 ] [ 0 ] - s -> image_offset_y ; <S2SV_StartBug> line = picture -> data [ plane ] + y * picture -> linesize [ plane ] ; <S2SV_EndBug> for ( ; y < tile -> comp [ compno ] . coord [ 1 ] [ 1 ] - s -> image_offset_y ; y += s -> cdy [ compno ] ) { uint8_t * dst ; x = tile -> comp [ compno ] . coord [ 0 ] [ 0 ] - s -> image_offset_x ; <S2SV_StartBug> dst = line + x * pixelsize + compno * ! planar ; <S2SV_EndBug> if ( codsty -> transform == FF_DWT97 ) { for ( ; x < w ; x += s -> cdx [ compno ] ) { int val = lrintf ( * datap ) + ( 1 << ( cbps - 1 ) ) ; val = av_clip ( val , 0 , ( 1 << cbps ) - 1 ) ; * dst = val << ( 8 - cbps ) ; datap ++ ; dst += pixelsize ; } } else { for ( ; x < w ; x += s -> cdx [ compno ] ) { int val = * i_datap + ( 1 << ( cbps - 1 ) ) ; val = av_clip ( val , 0 , ( 1 << cbps ) - 1 ) ; * dst = val << ( 8 - cbps ) ; i_datap ++ ; dst += pixelsize ; } } line += picture -> linesize [ plane ] ; } } } else { for ( compno = 0 ; compno < s -> ncomponents ; compno ++ ) { Jpeg2000Component * comp = tile -> comp + compno ; Jpeg2000CodingStyle * codsty = tile -> codsty + compno ; float * datap = comp -> f_data ; int32_t * i_datap = comp -> i_data ; uint16_t * linel ; int cbps = s -> cbps [ compno ] ; int w = tile -> comp [ compno ] . coord [ 0 ] [ 1 ] - s -> image_offset_x ; int planar = ! ! picture -> data [ 2 ] ; int pixelsize = planar ? 1 : s -> ncomponents ; int plane = 0 ; if ( planar ) plane = s -> cdef [ compno ] ? s -> cdef [ compno ] - 1 : ( s -> ncomponents - 1 ) ; y = tile -> comp [ compno ] . coord [ 1 ] [ 0 ] - s -> image_offset_y ; <S2SV_StartBug> linel = ( uint16_t * ) picture -> data [ plane ] + y * ( picture -> linesize [ plane ] >> 1 ) ; <S2SV_EndBug> for ( ; y < tile -> comp [ compno ] . coord [ 1 ] [ 1 ] - s -> image_offset_y ; y += s -> cdy [ compno ] ) { uint16_t * dst ; x = tile -> comp [ compno ] . coord [ 0 ] [ 0 ] - s -> image_offset_x ; <S2SV_StartBug> dst = linel + ( x * pixelsize + compno * ! planar ) ; <S2SV_EndBug> if ( codsty -> transform == FF_DWT97 ) { for ( ; x < w ; x += s -> cdx [ compno ] ) { int val = lrintf ( * datap ) + ( 1 << ( cbps - 1 ) ) ; val = av_clip ( val , 0 , ( 1 << cbps ) - 1 ) ; * dst = val << ( 16 - cbps ) ; datap ++ ; dst += pixelsize ; } } else { for ( ; x < w ; x += s -> cdx [ compno ] ) { int val = * i_datap + ( 1 << ( cbps - 1 ) ) ; val = av_clip ( val , 0 , ( 1 << cbps ) - 1 ) ; * dst = val << ( 16 - cbps ) ; i_datap ++ ; dst += pixelsize ; } } linel += picture -> linesize [ plane ] >> 1 ; } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] + y / s -> cdy [ compno ] <S2SV_ModStart> line + x / s -> cdx [ compno ] <S2SV_ModStart> ] + y / s -> cdy [ compno ] <S2SV_ModStart> + ( x / s -> cdx [ compno ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4001\n\n```\nCWE-189 <S2SV_StartBug> void oz_hcd_get_desc_cnf ( void * hport , u8 req_id , int status , const u8 * desc , <S2SV_EndBug> <S2SV_StartBug> int length , int offset , int total_size ) <S2SV_EndBug> { struct oz_port * port = hport ; struct urb * urb ; int err = 0 ; oz_dbg ( ON , \"oz_hcd_get_desc_cnf<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>offs<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>tot_size<S2SV_blank>=<S2SV_blank>%d\\\\n\" , length , offset , total_size ) ; urb = oz_find_urb_by_id ( port , 0 , req_id ) ; if ( ! urb ) return ; if ( status == 0 ) { <S2SV_StartBug> int copy_len ; <S2SV_EndBug> <S2SV_StartBug> int required_size = urb -> transfer_buffer_length ; <S2SV_EndBug> if ( required_size > total_size ) required_size = total_size ; copy_len = required_size - offset ; if ( length <= copy_len ) copy_len = length ; memcpy ( urb -> transfer_buffer + offset , desc , copy_len ) ; offset += copy_len ; if ( offset < required_size ) { struct usb_ctrlrequest * setup = ( struct usb_ctrlrequest * ) urb -> setup_packet ; unsigned wvalue = le16_to_cpu ( setup -> wValue ) ; if ( oz_enqueue_ep_urb ( port , 0 , 0 , urb , req_id ) ) err = - ENOMEM ; else if ( oz_usb_get_desc_req ( port -> hpd , req_id , setup -> bRequestType , ( u8 ) ( wvalue >> 8 ) , ( u8 ) wvalue , setup -> wIndex , offset , required_size - offset ) ) { oz_dequeue_ep_urb ( port , 0 , 0 , urb ) ; err = - ENOMEM ; } if ( err == 0 ) return ; } } urb -> actual_length = total_size ; oz_complete_urb ( port -> ozhcd -> hcd , urb , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u8 req_id , u8 <S2SV_ModEnd> status , const <S2SV_ModStart> * desc , u8 length , u16 offset , u16 <S2SV_ModEnd> total_size ) { <S2SV_ModStart> 0 ) { unsigned <S2SV_ModStart> int copy_len ; unsigned\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2180\n\n```\nCWE-125 int TS_OBJ_print_bio ( BIO * bio , const ASN1_OBJECT * obj ) { char obj_txt [ 128 ] ; <S2SV_StartBug> int len = OBJ_obj2txt ( obj_txt , sizeof ( obj_txt ) , obj , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> BIO_write ( bio , obj_txt , len ) ; <S2SV_EndBug> BIO_write ( bio , \"\\\\n\" , 1 ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 128 ] ; <S2SV_ModEnd> OBJ_obj2txt ( obj_txt <S2SV_ModStart> 0 ) ; BIO_printf <S2SV_ModEnd> ( bio , <S2SV_ModStart> ( bio , \"%s\\\\n\" , obj_txt <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8087\n\n```\nCWE-772 static int hwsim_new_radio_nl ( struct sk_buff * msg , struct genl_info * info ) { struct hwsim_new_radio_params param = { 0 } ; const char * hwname = NULL ; int ret ; param . reg_strict = info -> attrs [ HWSIM_ATTR_REG_STRICT_REG ] ; param . p2p_device = info -> attrs [ HWSIM_ATTR_SUPPORT_P2P_DEVICE ] ; param . channels = channels ; param . destroy_on_close = info -> attrs [ HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE ] ; if ( info -> attrs [ HWSIM_ATTR_CHANNELS ] ) param . channels = nla_get_u32 ( info -> attrs [ HWSIM_ATTR_CHANNELS ] ) ; if ( info -> attrs [ HWSIM_ATTR_NO_VIF ] ) param . no_vif = true ; if ( info -> attrs [ HWSIM_ATTR_RADIO_NAME ] ) { hwname = kasprintf ( GFP_KERNEL , \"%.*s\" , nla_len ( info -> attrs [ HWSIM_ATTR_RADIO_NAME ] ) , ( char * ) nla_data ( info -> attrs [ HWSIM_ATTR_RADIO_NAME ] ) ) ; if ( ! hwname ) return - ENOMEM ; param . hwname = hwname ; } if ( info -> attrs [ HWSIM_ATTR_USE_CHANCTX ] ) param . use_chanctx = true ; else param . use_chanctx = ( param . channels > 1 ) ; if ( info -> attrs [ HWSIM_ATTR_REG_HINT_ALPHA2 ] ) param . reg_alpha2 = nla_data ( info -> attrs [ HWSIM_ATTR_REG_HINT_ALPHA2 ] ) ; if ( info -> attrs [ HWSIM_ATTR_REG_CUSTOM_REG ] ) { u32 idx = nla_get_u32 ( info -> attrs [ HWSIM_ATTR_REG_CUSTOM_REG ] ) ; <S2SV_StartBug> if ( idx >= ARRAY_SIZE ( hwsim_world_regdom_custom ) ) <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> param . regd = hwsim_world_regdom_custom [ idx ] ; <S2SV_EndBug> } ret = mac80211_hwsim_new_radio ( info , & param ) ; kfree ( hwname ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> hwsim_world_regdom_custom ) ) { kfree ( hwname ) ; <S2SV_ModStart> - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int candidate_refresh_aq ( const CYCLIC_REFRESH * cr , const MB_MODE_INFO * mbmi , <S2SV_StartBug> BLOCK_SIZE bsize , int use_rd ) { <S2SV_EndBug> if ( use_rd ) { if ( cr -> projected_rate_sb < cr -> thresh_rate_sb ) return 1 ; else if ( bsize < cr -> min_block_size || <S2SV_StartBug> ( mbmi -> mv [ 0 ] . as_int != 0 && <S2SV_EndBug> <S2SV_StartBug> cr -> projected_dist_sb > cr -> thresh_dist_sb ) || <S2SV_EndBug> <S2SV_StartBug> ! is_inter_block ( mbmi ) ) <S2SV_EndBug> return 0 ; else return 1 ; } else { <S2SV_StartBug> if ( bsize < cr -> min_block_size || <S2SV_EndBug> <S2SV_StartBug> mbmi -> mv [ 0 ] . as_int != 0 || <S2SV_EndBug> ! is_inter_block ( mbmi ) ) return 0 ; else <S2SV_StartBug> return 1 ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * mbmi , int64_t rate , int64_t dist , int bsize ) { MV mv = <S2SV_ModEnd> mbmi -> mv <S2SV_ModStart> 0 ] . as_mv ; if ( dist <S2SV_ModEnd> > cr -> <S2SV_ModStart> cr -> thresh_dist_sb && ( mv . row > cr -> motion_thresh || mv . row < - cr -> motion_thresh || mv . col > cr -> motion_thresh || mv . col < - cr -> motion_thresh <S2SV_ModEnd> || ! is_inter_block <S2SV_ModStart> mbmi ) ) ) return CR_SEGMENT_ID_BASE ; else <S2SV_ModEnd> if ( bsize <S2SV_ModStart> if ( bsize >= BLOCK_16X16 && rate <S2SV_ModStart> < cr -> thresh_rate_sb && is_inter_block ( mbmi ) && <S2SV_ModEnd> mbmi -> mv <S2SV_ModStart> ] . as_int == 0 && cr -> rate_boost_fac > 10 ) return CR_SEGMENT_ID_BOOST2 <S2SV_ModEnd> ; else return <S2SV_ModStart> ; else return CR_SEGMENT_ID_BOOST1 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> int ntlm_read_message_fields ( wStream * s , NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( Stream_GetRemainingLength ( s ) < 8 ) return - 1 ; Stream_Read_UINT16 ( s , fields -> Len ) ; Stream_Read_UINT16 ( s , fields -> MaxLen ) ; Stream_Read_UINT32 ( s , fields -> BufferOffset ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1476\n\n```\nCWE-189 int midi_synth_load_patch ( int dev , int format , const char __user * addr , <S2SV_StartBug> int offs , int count , int pmgr_flag ) <S2SV_EndBug> { int orig_dev = synth_devs [ dev ] -> midi_dev ; struct sysex_info sysex ; int i ; unsigned long left , src_offs , eox_seen = 0 ; int first_byte = 1 ; int hdr_size = ( unsigned long ) & sysex . data [ 0 ] - ( unsigned long ) & sysex ; leave_sysex ( dev ) ; if ( ! prefix_cmd ( orig_dev , 0xf0 ) ) return 0 ; if ( format != SYSEX_PATCH ) <S2SV_StartBug> { <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> } <S2SV_EndBug> if ( count < hdr_size ) <S2SV_StartBug> { <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> } <S2SV_EndBug> count -= hdr_size ; <S2SV_StartBug> if ( copy_from_user ( & ( ( char * ) & sysex ) [ offs ] , & ( addr ) [ offs ] , hdr_size - offs ) ) <S2SV_EndBug> return - EFAULT ; <S2SV_StartBug> if ( count < sysex . len ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> sysex . len = count ; <S2SV_StartBug> } <S2SV_EndBug> left = sysex . len ; src_offs = 0 ; for ( i = 0 ; i < left && ! signal_pending ( current ) ; i ++ ) { unsigned char data ; if ( get_user ( data , ( unsigned char __user * ) ( addr + hdr_size + i ) ) ) return - EFAULT ; eox_seen = ( i > 0 && data & 0x80 ) ; if ( eox_seen && data != 0xf7 ) data = 0xf7 ; if ( i == 0 ) { if ( data != 0xf0 ) { printk ( KERN_WARNING \"midi_synth:<S2SV_blank>Sysex<S2SV_blank>start<S2SV_blank>missing\\\\n\" ) ; return - EINVAL ; } } while ( ! midi_devs [ orig_dev ] -> outputc ( orig_dev , ( unsigned char ) ( data & 0xff ) ) && ! signal_pending ( current ) ) schedule ( ) ; if ( ! first_byte && data & 0x80 ) return 0 ; first_byte = 0 ; } if ( ! eox_seen ) midi_outc ( orig_dev , 0xf7 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * addr , <S2SV_ModEnd> int count , <S2SV_ModStart> != SYSEX_PATCH ) <S2SV_ModEnd> return - EINVAL <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> if ( count <S2SV_ModStart> < hdr_size ) <S2SV_ModEnd> return - EINVAL <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> count -= hdr_size <S2SV_ModStart> copy_from_user ( & sysex , addr , hdr_size <S2SV_ModEnd> ) ) return <S2SV_ModStart> ; if ( ( unsigned ) count < ( unsigned ) <S2SV_ModEnd> sysex . len <S2SV_ModStart> . len ) <S2SV_ModEnd> sysex . len <S2SV_ModStart> = count ; <S2SV_ModEnd> left = sysex\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15126\n\n```\nCWE-416 static ssize_t userfaultfd_ctx_read ( struct userfaultfd_ctx * ctx , int no_wait , struct uffd_msg * msg ) { ssize_t ret ; DECLARE_WAITQUEUE ( wait , current ) ; struct userfaultfd_wait_queue * uwq ; LIST_HEAD ( fork_event ) ; struct userfaultfd_ctx * fork_nctx = NULL ; spin_lock ( & ctx -> fd_wqh . lock ) ; __add_wait_queue ( & ctx -> fd_wqh , & wait ) ; for ( ; ; ) { set_current_state ( TASK_INTERRUPTIBLE ) ; spin_lock ( & ctx -> fault_pending_wqh . lock ) ; uwq = find_userfault ( ctx ) ; if ( uwq ) { write_seqcount_begin ( & ctx -> refile_seq ) ; list_del ( & uwq -> wq . entry ) ; __add_wait_queue ( & ctx -> fault_wqh , & uwq -> wq ) ; write_seqcount_end ( & ctx -> refile_seq ) ; * msg = uwq -> msg ; spin_unlock ( & ctx -> fault_pending_wqh . lock ) ; ret = 0 ; break ; } spin_unlock ( & ctx -> fault_pending_wqh . lock ) ; spin_lock ( & ctx -> event_wqh . lock ) ; uwq = find_userfault_evt ( ctx ) ; if ( uwq ) { * msg = uwq -> msg ; if ( uwq -> msg . event == UFFD_EVENT_FORK ) { fork_nctx = ( struct userfaultfd_ctx * ) ( unsigned long ) uwq -> msg . arg . reserved . reserved1 ; list_move ( & uwq -> wq . entry , & fork_event ) ; <S2SV_StartBug> spin_unlock ( & ctx -> event_wqh . lock ) ; <S2SV_EndBug> ret = 0 ; break ; } userfaultfd_event_complete ( ctx , uwq ) ; spin_unlock ( & ctx -> event_wqh . lock ) ; ret = 0 ; break ; } spin_unlock ( & ctx -> event_wqh . lock ) ; if ( signal_pending ( current ) ) { ret = - ERESTARTSYS ; break ; } if ( no_wait ) { ret = - EAGAIN ; break ; } spin_unlock ( & ctx -> fd_wqh . lock ) ; schedule ( ) ; spin_lock ( & ctx -> fd_wqh . lock ) ; } __remove_wait_queue ( & ctx -> fd_wqh , & wait ) ; __set_current_state ( TASK_RUNNING ) ; spin_unlock ( & ctx -> fd_wqh . lock ) ; if ( ! ret && msg -> event == UFFD_EVENT_FORK ) { ret = resolve_userfault_fork ( ctx , fork_nctx , msg ) ; <S2SV_StartBug> if ( ! ret ) { <S2SV_EndBug> spin_lock ( & ctx -> event_wqh . lock ) ; if ( ! list_empty ( & fork_event ) ) { <S2SV_StartBug> uwq = list_first_entry ( & fork_event , <S2SV_EndBug> typeof ( * uwq ) , wq . entry ) ; list_del ( & uwq -> wq . entry ) ; __add_wait_queue ( & ctx -> event_wqh , & uwq -> wq ) ; <S2SV_StartBug> userfaultfd_event_complete ( ctx , uwq ) ; <S2SV_EndBug> } <S2SV_StartBug> spin_unlock ( & ctx -> event_wqh . lock ) ; <S2SV_EndBug> } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fork_event ) ; userfaultfd_ctx_get ( fork_nctx ) ; <S2SV_ModStart> msg ) ; <S2SV_ModEnd> spin_lock ( & <S2SV_ModStart> ) ) { userfaultfd_ctx_put ( fork_nctx ) ; <S2SV_ModStart> wq ) ; if ( likely ( ! ret ) ) <S2SV_ModStart> ) ; } else { if ( ret ) userfaultfd_ctx_put ( fork_nctx ) ; } spin_unlock ( & ctx -> event_wqh . lock ) ; <S2SV_ModEnd> } return ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int decode_coefs ( VP9_COMMON * cm , const MACROBLOCKD * xd , PLANE_TYPE type , <S2SV_EndBug> <S2SV_StartBug> int16_t * dqcoeff , TX_SIZE tx_size , const int16_t * dq , <S2SV_EndBug> int ctx , const int16_t * scan , const int16_t * nb , <S2SV_StartBug> vp9_reader * r ) { <S2SV_EndBug> const int max_eob = 16 << ( tx_size << 1 ) ; <S2SV_StartBug> const FRAME_CONTEXT * const fc = & cm -> fc ; <S2SV_EndBug> FRAME_COUNTS * const counts = & cm -> counts ; const int ref = is_inter_block ( & xd -> mi [ 0 ] -> mbmi ) ; int band , c = 0 ; <S2SV_StartBug> const vp9_prob ( * coef_probs ) [ COEFF_CONTEXTS ] [ UNCONSTRAINED_NODES ] = <S2SV_EndBug> fc -> coef_probs [ tx_size ] [ type ] [ ref ] ; <S2SV_StartBug> const vp9_prob * prob ; <S2SV_EndBug> <S2SV_StartBug> unsigned int ( * coef_counts ) [ COEFF_CONTEXTS ] [ UNCONSTRAINED_NODES + 1 ] = <S2SV_EndBug> counts -> coef [ tx_size ] [ type ] [ ref ] ; <S2SV_StartBug> unsigned int ( * eob_branch_count ) [ COEFF_CONTEXTS ] = <S2SV_EndBug> counts -> eob_branch [ tx_size ] [ type ] [ ref ] ; <S2SV_StartBug> uint8_t token_cache [ 32 * 32 ] ; <S2SV_EndBug> const uint8_t * cat6 ; const uint8_t * band_translate = get_band_translate ( tx_size ) ; const int dq_shift = ( tx_size == TX_32X32 ) ; int v ; int16_t dqv = dq [ 0 ] ; while ( c < max_eob ) { <S2SV_StartBug> int val ; <S2SV_EndBug> band = * band_translate ++ ; prob = coef_probs [ band ] [ ctx ] ; <S2SV_StartBug> if ( ! cm -> frame_parallel_decoding_mode ) <S2SV_EndBug> ++ eob_branch_count [ band ] [ ctx ] ; <S2SV_StartBug> if ( ! vp9_read ( r , prob [ EOB_CONTEXT_NODE ] ) ) { <S2SV_EndBug> INCREMENT_COUNT ( EOB_MODEL_TOKEN ) ; break ; } <S2SV_StartBug> while ( ! vp9_read ( r , prob [ ZERO_CONTEXT_NODE ] ) ) { <S2SV_EndBug> INCREMENT_COUNT ( ZERO_TOKEN ) ; dqv = dq [ 1 ] ; token_cache [ scan [ c ] ] = 0 ; ++ c ; if ( c >= max_eob ) return c ; ctx = get_coef_context ( nb , token_cache , c ) ; band = * band_translate ++ ; prob = coef_probs [ band ] [ ctx ] ; } <S2SV_StartBug> if ( ! vp9_read ( r , prob [ ONE_CONTEXT_NODE ] ) ) { <S2SV_EndBug> INCREMENT_COUNT ( ONE_TOKEN ) ; <S2SV_StartBug> WRITE_COEF_CONTINUE ( 1 , ONE_TOKEN ) ; <S2SV_EndBug> } INCREMENT_COUNT ( TWO_TOKEN ) ; <S2SV_StartBug> prob = vp9_pareto8_full [ prob [ PIVOT_NODE ] - 1 ] ; <S2SV_EndBug> if ( ! vp9_read ( r , prob [ LOW_VAL_CONTEXT_NODE ] ) ) { if ( ! vp9_read ( r , prob [ TWO_CONTEXT_NODE ] ) ) { WRITE_COEF_CONTINUE ( 2 , TWO_TOKEN ) ; } if ( ! vp9_read ( r , prob [ THREE_CONTEXT_NODE ] ) ) { WRITE_COEF_CONTINUE ( 3 , THREE_TOKEN ) ; } WRITE_COEF_CONTINUE ( 4 , FOUR_TOKEN ) ; } if ( ! vp9_read ( r , prob [ HIGH_LOW_CONTEXT_NODE ] ) ) { if ( ! vp9_read ( r , prob [ CAT_ONE_CONTEXT_NODE ] ) ) { val = CAT1_MIN_VAL ; ADJUST_COEF ( CAT1_PROB0 , 0 ) ; WRITE_COEF_CONTINUE ( val , CATEGORY1_TOKEN ) ; } val = CAT2_MIN_VAL ; ADJUST_COEF ( CAT2_PROB1 , 1 ) ; ADJUST_COEF ( CAT2_PROB0 , 0 ) ; WRITE_COEF_CONTINUE ( val , CATEGORY2_TOKEN ) ; } if ( ! vp9_read ( r , prob [ CAT_THREEFOUR_CONTEXT_NODE ] ) ) { if ( ! vp9_read ( r , prob [ CAT_THREE_CONTEXT_NODE ] ) ) { val = CAT3_MIN_VAL ; ADJUST_COEF ( CAT3_PROB2 , 2 ) ; ADJUST_COEF ( CAT3_PROB1 , 1 ) ; ADJUST_COEF ( CAT3_PROB0 , 0 ) ; WRITE_COEF_CONTINUE ( val , CATEGORY3_TOKEN ) ; } val = CAT4_MIN_VAL ; ADJUST_COEF ( CAT4_PROB3 , 3 ) ; ADJUST_COEF ( CAT4_PROB2 , 2 ) ; ADJUST_COEF ( CAT4_PROB1 , 1 ) ; ADJUST_COEF ( CAT4_PROB0 , 0 ) ; WRITE_COEF_CONTINUE ( val , CATEGORY4_TOKEN ) ; } if ( ! vp9_read ( r , prob [ CAT_FIVE_CONTEXT_NODE ] ) ) { val = CAT5_MIN_VAL ; ADJUST_COEF ( CAT5_PROB4 , 4 ) ; ADJUST_COEF ( CAT5_PROB3 , 3 ) ; ADJUST_COEF ( CAT5_PROB2 , 2 ) ; ADJUST_COEF ( CAT5_PROB1 , 1 ) ; ADJUST_COEF ( CAT5_PROB0 , 0 ) ; WRITE_COEF_CONTINUE ( val , CATEGORY5_TOKEN ) ; } val = 0 ; cat6 = cat6_prob ; while ( * cat6 ) val = ( val << 1 ) | vp9_read ( r , * cat6 ++ ) ; val += CAT6_MIN_VAL ; WRITE_COEF_CONTINUE ( val , CATEGORY6_TOKEN ) ; } return c ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int decode_coefs ( <S2SV_ModEnd> const MACROBLOCKD * <S2SV_ModStart> PLANE_TYPE type , tran_low_t <S2SV_ModEnd> * dqcoeff , <S2SV_ModStart> * nb , vpx_reader * r ) { FRAME_COUNTS * counts = xd -> counts ; <S2SV_ModEnd> const int max_eob <S2SV_ModStart> const fc = xd -> fc <S2SV_ModEnd> ; const int <S2SV_ModStart> 0 ; const vpx_prob <S2SV_ModEnd> ( * coef_probs <S2SV_ModStart> ] ; const vpx_prob <S2SV_ModEnd> * prob ; <S2SV_ModStart> + 1 ] ; unsigned int ( * eob_branch_count ) [ COEFF_CONTEXTS ] ; uint8_t token_cache [ 32 * 32 ] ; const uint8_t * band_translate = get_band_translate ( tx_size ) ; const int dq_shift = ( tx_size == TX_32X32 ) ; int v , token ; int16_t dqv = dq [ 0 ] ; const uint8_t * cat1_prob ; const uint8_t * cat2_prob ; const uint8_t * cat3_prob ; const uint8_t * cat4_prob ; const uint8_t * cat5_prob ; const uint8_t * cat6_prob ; if ( counts ) { coef_counts = <S2SV_ModEnd> counts -> coef <S2SV_ModStart> ref ] ; eob_branch_count = <S2SV_ModEnd> counts -> eob_branch <S2SV_ModStart> ref ] ; } # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> bd > VPX_BITS_8 ) { if ( xd -> bd == VPX_BITS_10 ) { cat1_prob = vp9_cat1_prob_high10 ; cat2_prob = vp9_cat2_prob_high10 ; cat3_prob = vp9_cat3_prob_high10 ; cat4_prob = vp9_cat4_prob_high10 ; cat5_prob = vp9_cat5_prob_high10 ; cat6_prob = vp9_cat6_prob_high10 ; } else { cat1_prob = vp9_cat1_prob_high12 ; cat2_prob = vp9_cat2_prob_high12 ; cat3_prob = vp9_cat3_prob_high12 ; cat4_prob = vp9_cat4_prob_high12 ; cat5_prob = vp9_cat5_prob_high12 ; cat6_prob = vp9_cat6_prob_high12 ; } } else { cat1_prob = vp9_cat1_prob ; cat2_prob = vp9_cat2_prob ; cat3_prob = vp9_cat3_prob ; cat4_prob = vp9_cat4_prob ; cat5_prob = vp9_cat5_prob ; cat6_prob = vp9_cat6_prob ; } # else cat1_prob = vp9_cat1_prob ; cat2_prob = vp9_cat2_prob ; cat3_prob = vp9_cat3_prob ; cat4_prob = vp9_cat4_prob ; cat5_prob = vp9_cat5_prob ; cat6_prob = vp9_cat6_prob ; # endif <S2SV_ModEnd> while ( c <S2SV_ModStart> { int val = - 1 <S2SV_ModStart> ; if ( counts <S2SV_ModEnd> ) ++ eob_branch_count <S2SV_ModStart> if ( ! vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> while ( ! vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> if ( ! vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> ONE_TOKEN ) ; token = ONE_TOKEN ; val = 1 ; } else { <S2SV_ModEnd> INCREMENT_COUNT ( TWO_TOKEN <S2SV_ModStart> TWO_TOKEN ) ; token = vpx_read_tree ( r , vp9_coef_con_tree , <S2SV_ModEnd> vp9_pareto8_full [ prob <S2SV_ModStart> - 1 ] ) ; switch ( token ) { case TWO_TOKEN : case THREE_TOKEN : case FOUR_TOKEN : val = token ; break ; case CATEGORY1_TOKEN : val = CAT1_MIN_VAL + read_coeff ( cat1_prob , 1 , r ) ; break ; case CATEGORY2_TOKEN : val = CAT2_MIN_VAL + read_coeff ( cat2_prob , 2 , r ) ; break ; case CATEGORY3_TOKEN : val = CAT3_MIN_VAL + read_coeff ( cat3_prob , 3 , r ) ; break ; case CATEGORY4_TOKEN : val = CAT4_MIN_VAL + read_coeff ( cat4_prob , 4 , r ) ; break ; case CATEGORY5_TOKEN : val = CAT5_MIN_VAL + read_coeff ( cat5_prob , 5 , r ) ; break ; case CATEGORY6_TOKEN : # if CONFIG_VP9_HIGHBITDEPTH switch ( xd -> bd ) { case VPX_BITS_8 : val = CAT6_MIN_VAL + read_coeff ( cat6_prob , 14 , r ) ; break ; case VPX_BITS_10 : val = CAT6_MIN_VAL + read_coeff ( cat6_prob , 16 , r ) ; break ; case VPX_BITS_12 : val = CAT6_MIN_VAL + read_coeff ( cat6_prob , 18 , r ) ; break ; default : assert ( 0 ) ; return - 1 ; } # else val = CAT6_MIN_VAL + read_coeff ( cat6_prob , 14 , r ) ; # endif break ; } } v = ( val * dqv ) >> dq_shift ; # if CONFIG_COEFFICIENT_RANGE_CHECKING # if CONFIG_VP9_HIGHBITDEPTH dqcoeff [ scan [ c ] ] = highbd_check_range ( ( vpx_read_bit ( r ) ? - v : v ) , xd -> bd ) ; # else dqcoeff [ scan [ c ] ] = check_range ( vpx_read_bit ( r ) ? - v : v ) ; # endif # else dqcoeff [ scan [ c ] ] = vpx_read_bit ( r ) ? - v : v ; # endif token_cache [ scan [ c ] ] = vp9_pt_energy_class [ token ] ; ++ c ; ctx = get_coef_context ( nb , token_cache , c ) ; dqv = dq [ 1 ] <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14354\n\n```\nCWE-416 static void host_callback ( void * arg , int status , int timeouts , unsigned char * abuf , int alen ) { struct host_query * hquery = ( struct host_query * ) arg ; int addinfostatus = ARES_SUCCESS ; hquery -> timeouts += timeouts ; hquery -> remaining -- ; if ( status == ARES_SUCCESS ) { addinfostatus = ares__parse_into_addrinfo ( abuf , alen , hquery -> ai ) ; } else if ( status == ARES_EDESTRUCTION ) { end_hquery ( hquery , status ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( ! hquery -> remaining ) { if ( addinfostatus != ARES_SUCCESS ) { end_hquery ( hquery , addinfostatus ) ; } else if ( hquery -> ai -> nodes ) { end_hquery ( hquery , ARES_SUCCESS ) ; } else if ( status == ARES_ENOTFOUND ) { next_lookup ( hquery , status ) ; } else { end_hquery ( hquery , status ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> status ) ; return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_fht4x4_sse2 ( const int16_t * input , int16_t * output , <S2SV_EndBug> int stride , int tx_type ) { __m128i in [ 4 ] ; switch ( tx_type ) { case DCT_DCT : <S2SV_StartBug> vp9_fdct4x4_sse2 ( input , output , stride ) ; <S2SV_EndBug> break ; case ADST_DCT : load_buffer_4x4 ( input , in , stride ) ; fadst4_sse2 ( in ) ; fdct4_sse2 ( in ) ; write_buffer_4x4 ( output , in ) ; break ; case DCT_ADST : load_buffer_4x4 ( input , in , stride ) ; fdct4_sse2 ( in ) ; fadst4_sse2 ( in ) ; write_buffer_4x4 ( output , in ) ; break ; case ADST_ADST : load_buffer_4x4 ( input , in , stride ) ; fadst4_sse2 ( in ) ; fadst4_sse2 ( in ) ; write_buffer_4x4 ( output , in ) ; break ; default : assert ( 0 ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * input , tran_low_t <S2SV_ModEnd> * output , <S2SV_ModStart> case DCT_DCT : vpx_fdct4x4_sse2 <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 <S2SV_StartBug> error_t mqttSnClientDisconnect ( MqttSnClientContext * context ) <S2SV_EndBug> { error_t error ; systime_t time ; if ( context == NULL ) return ERROR_INVALID_PARAMETER ; error = NO_ERROR ; while ( ! error ) { time = osGetSystemTime ( ) ; if ( context -> state == MQTT_SN_CLIENT_STATE_ACTIVE ) { context -> startTime = time ; <S2SV_StartBug> error = mqttSnClientSendDisconnect ( context , 0 ) ; <S2SV_EndBug> } else if ( context -> state == MQTT_SN_CLIENT_STATE_SENDING_REQ ) { if ( timeCompare ( time , context -> startTime + context -> timeout ) >= 0 ) { mqttSnClientShutdownConnection ( context ) ; error = ERROR_TIMEOUT ; } else if ( timeCompare ( time , context -> retransmitStartTime + MQTT_SN_CLIENT_RETRY_TIMEOUT ) >= 0 ) { <S2SV_StartBug> error = mqttSnClientSendDisconnect ( context , 0 ) ; <S2SV_EndBug> } else { error = mqttSnClientProcessEvents ( context , MQTT_SN_CLIENT_TICK_INTERVAL ) ; } } else if ( context -> state == MQTT_SN_CLIENT_STATE_DISCONNECTING ) { error = mqttSnClientShutdownConnection ( context ) ; mqttSnClientCloseConnection ( context ) ; context -> state = MQTT_SN_CLIENT_STATE_DISCONNECTED ; } else if ( context -> state == MQTT_SN_CLIENT_STATE_DISCONNECTED ) { break ; } else { error = ERROR_WRONG_STATE ; } } if ( error != NO_ERROR && error != ERROR_WOULD_BLOCK ) { mqttSnClientCloseConnection ( context ) ; context -> state = MQTT_SN_CLIENT_STATE_DISCONNECTED ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MqttSnClientContext * context , systime_t duration <S2SV_ModStart> ( context , duration / 1000 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( context , duration / 1000 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> static const char * parse_object ( cJSON * item , const char * value ) <S2SV_EndBug> { cJSON * child ; if ( * value != '{' ) { <S2SV_StartBug> ep = value ; <S2SV_EndBug> return 0 ; } item -> type = cJSON_Object ; value = skip ( value + 1 ) ; if ( * value == '}' ) <S2SV_StartBug> return value + 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( item -> child = child = cJSON_New_Item ( ) ) ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> if ( ! ( value = skip ( parse_string ( child , skip ( value ) ) ) ) ) <S2SV_EndBug> return 0 ; child -> string = child -> valuestring ; child -> valuestring = 0 ; if ( * value != ':' ) { <S2SV_StartBug> ep = value ; <S2SV_EndBug> return 0 ; } <S2SV_StartBug> if ( ! ( value = skip ( parse_value ( child , skip ( value + 1 ) ) ) ) ) <S2SV_EndBug> return 0 ; while ( * value == ',' ) { cJSON * new_item ; if ( ! ( new_item = cJSON_New_Item ( ) ) ) return 0 ; child -> next = new_item ; new_item -> prev = child ; <S2SV_StartBug> child = new_item ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( value = skip ( parse_string ( child , skip ( value + 1 ) ) ) ) ) <S2SV_EndBug> return 0 ; child -> string = child -> valuestring ; child -> valuestring = 0 ; if ( * value != ':' ) { <S2SV_StartBug> ep = value ; <S2SV_EndBug> return 0 ; } <S2SV_StartBug> if ( ! ( value = skip ( parse_value ( child , skip ( value + 1 ) ) ) ) ) <S2SV_EndBug> return 0 ; } if ( * value == '}' ) <S2SV_StartBug> return value + 1 ; <S2SV_EndBug> ep = value ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * value , const char * * ep <S2SV_ModStart> '{' ) { * ep = value ; return 0 ; <S2SV_ModEnd> } item -> <S2SV_ModStart> == '}' ) return value + 1 ; <S2SV_ModEnd> item -> child <S2SV_ModStart> cJSON_New_Item ( ) ; if ( ! item -> child ) return 0 ; <S2SV_ModEnd> value = skip <S2SV_ModStart> ( value ) , ep ) ) ; if ( ! value ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> ':' ) { * ep = value ; return 0 ; } <S2SV_ModEnd> value = skip <S2SV_ModStart> + 1 ) , ep ) ) ; if ( ! value ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> = child ; child = new_item ; <S2SV_ModEnd> value = skip <S2SV_ModStart> + 1 ) , ep ) ) ; if ( ! value ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> ':' ) { * ep = value ; return 0 ; } <S2SV_ModEnd> value = skip <S2SV_ModStart> + 1 ) , ep ) ) ; if ( ! value ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> == '}' ) return value + 1 ; * ep = value ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2319\n\n```\nCWE-264 static int hfsplus_readdir ( struct file * filp , void * dirent , filldir_t filldir ) { struct inode * inode = filp -> f_path . dentry -> d_inode ; struct super_block * sb = inode -> i_sb ; int len , err ; char strbuf [ HFSPLUS_MAX_STRLEN + 1 ] ; hfsplus_cat_entry entry ; struct hfs_find_data fd ; struct hfsplus_readdir_data * rd ; u16 type ; if ( filp -> f_pos >= inode -> i_size ) return 0 ; err = hfs_find_init ( HFSPLUS_SB ( sb ) -> cat_tree , & fd ) ; if ( err ) return err ; hfsplus_cat_build_key ( sb , fd . search_key , inode -> i_ino , NULL ) ; err = hfs_brec_find ( & fd ) ; if ( err ) goto out ; switch ( ( u32 ) filp -> f_pos ) { case 0 : if ( filldir ( dirent , \".\" , 1 , 0 , inode -> i_ino , DT_DIR ) ) goto out ; filp -> f_pos ++ ; case 1 : <S2SV_StartBug> hfs_bnode_read ( fd . bnode , & entry , fd . entryoffset , <S2SV_EndBug> fd . entrylength ) ; if ( be16_to_cpu ( entry . type ) != HFSPLUS_FOLDER_THREAD ) { printk ( KERN_ERR \"hfs:<S2SV_blank>bad<S2SV_blank>catalog<S2SV_blank>folder<S2SV_blank>thread\\\\n\" ) ; err = - EIO ; goto out ; } if ( fd . entrylength < HFSPLUS_MIN_THREAD_SZ ) { printk ( KERN_ERR \"hfs:<S2SV_blank>truncated<S2SV_blank>catalog<S2SV_blank>thread\\\\n\" ) ; err = - EIO ; goto out ; } if ( filldir ( dirent , \"..\" , 2 , 1 , be32_to_cpu ( entry . thread . parentID ) , DT_DIR ) ) goto out ; filp -> f_pos ++ ; default : if ( filp -> f_pos >= inode -> i_size ) goto out ; err = hfs_brec_goto ( & fd , filp -> f_pos - 1 ) ; if ( err ) goto out ; } for ( ; ; ) { if ( be32_to_cpu ( fd . key -> cat . parent ) != inode -> i_ino ) { printk ( KERN_ERR \"hfs:<S2SV_blank>walked<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>dir\\\\n\" ) ; err = - EIO ; goto out ; } <S2SV_StartBug> hfs_bnode_read ( fd . bnode , & entry , fd . entryoffset , <S2SV_EndBug> fd . entrylength ) ; type = be16_to_cpu ( entry . type ) ; len = HFSPLUS_MAX_STRLEN ; err = hfsplus_uni2asc ( sb , & fd . key -> cat . name , strbuf , & len ) ; if ( err ) goto out ; if ( type == HFSPLUS_FOLDER ) { if ( fd . entrylength < sizeof ( struct hfsplus_cat_folder ) ) { printk ( KERN_ERR \"hfs:<S2SV_blank>small<S2SV_blank>dir<S2SV_blank>entry\\\\n\" ) ; err = - EIO ; goto out ; } if ( HFSPLUS_SB ( sb ) -> hidden_dir && HFSPLUS_SB ( sb ) -> hidden_dir -> i_ino == be32_to_cpu ( entry . folder . id ) ) goto next ; if ( filldir ( dirent , strbuf , len , filp -> f_pos , be32_to_cpu ( entry . folder . id ) , DT_DIR ) ) break ; } else if ( type == HFSPLUS_FILE ) { if ( fd . entrylength < sizeof ( struct hfsplus_cat_file ) ) { printk ( KERN_ERR \"hfs:<S2SV_blank>small<S2SV_blank>file<S2SV_blank>entry\\\\n\" ) ; err = - EIO ; goto out ; } if ( filldir ( dirent , strbuf , len , filp -> f_pos , be32_to_cpu ( entry . file . id ) , DT_REG ) ) break ; } else { printk ( KERN_ERR \"hfs:<S2SV_blank>bad<S2SV_blank>catalog<S2SV_blank>entry<S2SV_blank>type\\\\n\" ) ; err = - EIO ; goto out ; } next : filp -> f_pos ++ ; if ( filp -> f_pos >= inode -> i_size ) goto out ; err = hfs_brec_goto ( & fd , 1 ) ; if ( err ) goto out ; } rd = filp -> private_data ; if ( ! rd ) { rd = kmalloc ( sizeof ( struct hfsplus_readdir_data ) , GFP_KERNEL ) ; if ( ! rd ) { err = - ENOMEM ; goto out ; } filp -> private_data = rd ; rd -> file = filp ; list_add ( & rd -> list , & HFSPLUS_I ( inode ) -> open_dir_list ) ; } memcpy ( & rd -> key , fd . key , sizeof ( struct hfsplus_cat_key ) ) ; out : hfs_find_exit ( & fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 1 : if ( fd . entrylength > sizeof ( entry ) || fd . entrylength < 0 ) { err = - EIO ; goto out ; } <S2SV_ModStart> out ; } if ( fd . entrylength > sizeof ( entry ) || fd . entrylength < 0 ) { err = - EIO ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 static struct net_device * _init_airo_card ( unsigned short irq , int port , int is_pcmcia , struct pci_dev * pci , struct device * dmdev ) { struct net_device * dev ; struct airo_info * ai ; int i , rc ; CapabilityRid cap_rid ; dev = alloc_netdev ( sizeof ( * ai ) , \"\" , ether_setup ) ; if ( ! dev ) { airo_print_err ( \"\" , \"Couldn\\'t<S2SV_blank>alloc_etherdev\" ) ; return NULL ; } ai = dev -> ml_priv = netdev_priv ( dev ) ; ai -> wifidev = NULL ; ai -> flags = 1 << FLAG_RADIO_DOWN ; ai -> jobs = 0 ; ai -> dev = dev ; if ( pci && ( pci -> device == 0x5000 || pci -> device == 0xa504 ) ) { airo_print_dbg ( \"\" , \"Found<S2SV_blank>an<S2SV_blank>MPI350<S2SV_blank>card\" ) ; set_bit ( FLAG_MPI , & ai -> flags ) ; } spin_lock_init ( & ai -> aux_lock ) ; sema_init ( & ai -> sem , 1 ) ; ai -> config . len = 0 ; ai -> pci = pci ; init_waitqueue_head ( & ai -> thr_wait ) ; ai -> tfm = NULL ; add_airo_dev ( ai ) ; if ( airo_networks_allocate ( ai ) ) goto err_out_free ; airo_networks_initialize ( ai ) ; skb_queue_head_init ( & ai -> txq ) ; if ( test_bit ( FLAG_MPI , & ai -> flags ) ) dev -> netdev_ops = & mpi_netdev_ops ; else dev -> netdev_ops = & airo_netdev_ops ; dev -> wireless_handlers = & airo_handler_def ; ai -> wireless_data . spy_data = & ai -> spy_data ; dev -> wireless_data = & ai -> wireless_data ; dev -> irq = irq ; dev -> base_addr = port ; <S2SV_StartBug> SET_NETDEV_DEV ( dev , dmdev ) ; <S2SV_EndBug> reset_card ( dev , 1 ) ; msleep ( 400 ) ; if ( ! is_pcmcia ) { if ( ! request_region ( dev -> base_addr , 64 , DRV_NAME ) ) { rc = - EBUSY ; airo_print_err ( dev -> name , \"Couldn\\'t<S2SV_blank>request<S2SV_blank>region\" ) ; goto err_out_nets ; } } if ( test_bit ( FLAG_MPI , & ai -> flags ) ) { if ( mpi_map_card ( ai , pci ) ) { airo_print_err ( \"\" , \"Could<S2SV_blank>not<S2SV_blank>map<S2SV_blank>memory\" ) ; goto err_out_res ; } } if ( probe ) { if ( setup_card ( ai , dev -> dev_addr , 1 ) != SUCCESS ) { airo_print_err ( dev -> name , \"MAC<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>enabled\" ) ; rc = - EIO ; goto err_out_map ; } } else if ( ! test_bit ( FLAG_MPI , & ai -> flags ) ) { ai -> bap_read = fast_bap_read ; set_bit ( FLAG_FLASHING , & ai -> flags ) ; } strcpy ( dev -> name , \"eth%d\" ) ; rc = register_netdev ( dev ) ; if ( rc ) { airo_print_err ( dev -> name , \"Couldn\\'t<S2SV_blank>register_netdev\" ) ; goto err_out_map ; } ai -> wifidev = init_wifidev ( ai , dev ) ; if ( ! ai -> wifidev ) goto err_out_reg ; rc = readCapabilityRid ( ai , & cap_rid , 1 ) ; if ( rc != SUCCESS ) { rc = - EIO ; goto err_out_wifi ; } ai -> wep_capable = ( cap_rid . softCap & cpu_to_le16 ( 0x02 ) ) ? 1 : 0 ; ai -> max_wep_idx = ( cap_rid . softCap & cpu_to_le16 ( 0x80 ) ) ? 3 : 0 ; airo_print_info ( dev -> name , \"Firmware<S2SV_blank>version<S2SV_blank>%x.%x.%02d\" , ( ( le16_to_cpu ( cap_rid . softVer ) >> 8 ) & 0xF ) , ( le16_to_cpu ( cap_rid . softVer ) & 0xFF ) , le16_to_cpu ( cap_rid . softSubVer ) ) ; if ( le16_to_cpu ( cap_rid . softVer ) > 0x530 || ( le16_to_cpu ( cap_rid . softVer ) == 0x530 && le16_to_cpu ( cap_rid . softSubVer ) >= 17 ) ) { airo_print_info ( ai -> dev -> name , \"WPA<S2SV_blank>supported.\" ) ; set_bit ( FLAG_WPA_CAPABLE , & ai -> flags ) ; ai -> bssListFirst = RID_WPA_BSSLISTFIRST ; ai -> bssListNext = RID_WPA_BSSLISTNEXT ; ai -> bssListRidLen = sizeof ( BSSListRid ) ; } else { airo_print_info ( ai -> dev -> name , \"WPA<S2SV_blank>unsupported<S2SV_blank>with<S2SV_blank>firmware<S2SV_blank>\" \"versions<S2SV_blank>older<S2SV_blank>than<S2SV_blank>5.30.17.\" ) ; ai -> bssListFirst = RID_BSSLISTFIRST ; ai -> bssListNext = RID_BSSLISTNEXT ; ai -> bssListRidLen = sizeof ( BSSListRid ) - sizeof ( BSSListRidExtra ) ; } set_bit ( FLAG_REGISTERED , & ai -> flags ) ; airo_print_info ( dev -> name , \"MAC<S2SV_blank>enabled<S2SV_blank>%pM\" , dev -> dev_addr ) ; if ( probe && ! test_bit ( FLAG_MPI , & ai -> flags ) ) for ( i = 0 ; i < MAX_FIDS ; i ++ ) ai -> fids [ i ] = transmit_allocate ( ai , AIRO_DEF_MTU , i >= MAX_FIDS / 2 ) ; if ( setup_proc_entry ( dev , dev -> ml_priv ) < 0 ) goto err_out_wifi ; return dev ; err_out_wifi : unregister_netdev ( ai -> wifidev ) ; free_netdev ( ai -> wifidev ) ; err_out_reg : unregister_netdev ( dev ) ; err_out_map : if ( test_bit ( FLAG_MPI , & ai -> flags ) && pci ) { pci_free_consistent ( pci , PCI_SHARED_LEN , ai -> shared , ai -> shared_dma ) ; iounmap ( ai -> pciaux ) ; iounmap ( ai -> pcimem ) ; mpi_unmap_card ( ai -> pci ) ; } err_out_res : if ( ! is_pcmcia ) release_region ( dev -> base_addr , 64 ) ; err_out_nets : airo_networks_free ( ai ) ; err_out_free : del_airo_dev ( ai ) ; free_netdev ( dev ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = port ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7012\n\n```\nCWE-119 static int get_siz ( Jpeg2000DecoderContext * s ) { int i ; int ncomponents ; uint32_t log2_chroma_wh = 0 ; const enum AVPixelFormat * possible_fmts = NULL ; int possible_fmts_nb = 0 ; if ( bytestream2_get_bytes_left ( & s -> g ) < 36 ) return AVERROR_INVALIDDATA ; s -> avctx -> profile = bytestream2_get_be16u ( & s -> g ) ; s -> width = bytestream2_get_be32u ( & s -> g ) ; s -> height = bytestream2_get_be32u ( & s -> g ) ; s -> image_offset_x = bytestream2_get_be32u ( & s -> g ) ; s -> image_offset_y = bytestream2_get_be32u ( & s -> g ) ; s -> tile_width = bytestream2_get_be32u ( & s -> g ) ; s -> tile_height = bytestream2_get_be32u ( & s -> g ) ; s -> tile_offset_x = bytestream2_get_be32u ( & s -> g ) ; s -> tile_offset_y = bytestream2_get_be32u ( & s -> g ) ; <S2SV_StartBug> ncomponents = bytestream2_get_be16u ( & s -> g ) ; <S2SV_EndBug> if ( ncomponents <= 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components:<S2SV_blank>%d\\\\n\" , s -> ncomponents ) ; return AVERROR_INVALIDDATA ; } if ( ncomponents > 4 ) { avpriv_request_sample ( s -> avctx , \"Support<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>components\" , s -> ncomponents ) ; return AVERROR_PATCHWELCOME ; } s -> ncomponents = ncomponents ; if ( s -> tile_width <= 0 || s -> tile_height <= 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>tile<S2SV_blank>dimension<S2SV_blank>%dx%d.\\\\n\" , s -> tile_width , s -> tile_height ) ; return AVERROR_INVALIDDATA ; } if ( bytestream2_get_bytes_left ( & s -> g ) < 3 * s -> ncomponents ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < s -> ncomponents ; i ++ ) { uint8_t x = bytestream2_get_byteu ( & s -> g ) ; s -> cbps [ i ] = ( x & 0x7f ) + 1 ; s -> precision = FFMAX ( s -> cbps [ i ] , s -> precision ) ; s -> sgnd [ i ] = ! ! ( x & 0x80 ) ; s -> cdx [ i ] = bytestream2_get_byteu ( & s -> g ) ; s -> cdy [ i ] = bytestream2_get_byteu ( & s -> g ) ; if ( ! s -> cdx [ i ] || s -> cdx [ i ] == 3 || s -> cdx [ i ] > 4 || ! s -> cdy [ i ] || s -> cdy [ i ] == 3 || s -> cdy [ i ] > 4 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>sample<S2SV_blank>separation<S2SV_blank>%d/%d\\\\n\" , s -> cdx [ i ] , s -> cdy [ i ] ) ; return AVERROR_INVALIDDATA ; } log2_chroma_wh |= s -> cdy [ i ] >> 1 << i * 4 | s -> cdx [ i ] >> 1 << i * 4 + 2 ; } s -> numXtiles = ff_jpeg2000_ceildiv ( s -> width - s -> tile_offset_x , s -> tile_width ) ; s -> numYtiles = ff_jpeg2000_ceildiv ( s -> height - s -> tile_offset_y , s -> tile_height ) ; if ( s -> numXtiles * ( uint64_t ) s -> numYtiles > INT_MAX / sizeof ( * s -> tile ) ) { s -> numXtiles = s -> numYtiles = 0 ; return AVERROR ( EINVAL ) ; } s -> tile = av_mallocz_array ( s -> numXtiles * s -> numYtiles , sizeof ( * s -> tile ) ) ; if ( ! s -> tile ) { s -> numXtiles = s -> numYtiles = 0 ; return AVERROR ( ENOMEM ) ; } for ( i = 0 ; i < s -> numXtiles * s -> numYtiles ; i ++ ) { Jpeg2000Tile * tile = s -> tile + i ; tile -> comp = av_mallocz ( s -> ncomponents * sizeof ( * tile -> comp ) ) ; if ( ! tile -> comp ) return AVERROR ( ENOMEM ) ; } s -> avctx -> width = ff_jpeg2000_ceildivpow2 ( s -> width - s -> image_offset_x , s -> reduction_factor ) ; s -> avctx -> height = ff_jpeg2000_ceildivpow2 ( s -> height - s -> image_offset_y , s -> reduction_factor ) ; if ( s -> avctx -> profile == FF_PROFILE_JPEG2000_DCINEMA_2K || s -> avctx -> profile == FF_PROFILE_JPEG2000_DCINEMA_4K ) { possible_fmts = xyz_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( xyz_pix_fmts ) ; } else { switch ( s -> colour_space ) { case 16 : possible_fmts = rgb_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( rgb_pix_fmts ) ; break ; case 17 : possible_fmts = gray_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( gray_pix_fmts ) ; break ; case 18 : possible_fmts = yuv_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( yuv_pix_fmts ) ; break ; default : possible_fmts = all_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( all_pix_fmts ) ; break ; } } for ( i = 0 ; i < possible_fmts_nb ; ++ i ) { if ( pix_fmt_match ( possible_fmts [ i ] , ncomponents , s -> precision , log2_chroma_wh , s -> pal8 ) ) { s -> avctx -> pix_fmt = possible_fmts [ i ] ; break ; } } if ( s -> avctx -> pix_fmt == AV_PIX_FMT_NONE ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>pix_fmt,<S2SV_blank>profile:<S2SV_blank>%d,<S2SV_blank>colour_space:<S2SV_blank>%d,<S2SV_blank>\" \"components:<S2SV_blank>%d,<S2SV_blank>precision:<S2SV_blank>%d,<S2SV_blank>\" \"cdx[1]:<S2SV_blank>%d,<S2SV_blank>cdy[1]:<S2SV_blank>%d,<S2SV_blank>cdx[2]:<S2SV_blank>%d,<S2SV_blank>cdy[2]:<S2SV_blank>%d\\\\n\" , s -> avctx -> profile , s -> colour_space , ncomponents , s -> precision , ncomponents > 2 ? s -> cdx [ 1 ] : 0 , ncomponents > 2 ? s -> cdy [ 1 ] : 0 , ncomponents > 2 ? s -> cdx [ 2 ] : 0 , ncomponents > 2 ? s -> cdy [ 2 ] : 0 ) ; } s -> avctx -> bits_per_raw_sample = s -> precision ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> g ) ; if ( s -> image_offset_x || s -> image_offset_y ) { avpriv_request_sample ( s -> avctx , \"Support<S2SV_blank>for<S2SV_blank>image<S2SV_blank>offsets\" ) ; return AVERROR_PATCHWELCOME ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 static void addArgumentToVtab ( Parse * pParse ) { if ( pParse -> sArg . z && pParse -> pNewTable ) { const char * z = ( const char * ) pParse -> sArg . z ; int n = pParse -> sArg . n ; sqlite3 * db = pParse -> db ; <S2SV_StartBug> addModuleArgument ( db , pParse -> pNewTable , sqlite3DbStrNDup ( db , z , n ) ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; addModuleArgument ( pParse <S2SV_ModEnd> , pParse ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11608\n\n```\nCWE-476 static void ov511_mode_init_regs ( struct sd * sd ) { struct gspca_dev * gspca_dev = ( struct gspca_dev * ) sd ; int hsegs , vsegs , packet_size , fps , needed ; int interlaced = 0 ; struct usb_host_interface * alt ; struct usb_interface * intf ; intf = usb_ifnum_to_if ( sd -> gspca_dev . dev , sd -> gspca_dev . iface ) ; alt = usb_altnum_to_altsetting ( intf , sd -> gspca_dev . alt ) ; if ( ! alt ) { gspca_err ( gspca_dev , \"Couldn\\'t<S2SV_blank>get<S2SV_blank>altsetting\\\\n\" ) ; <S2SV_StartBug> sd -> gspca_dev . usb_err = - EIO ; <S2SV_EndBug> return ; } packet_size = le16_to_cpu ( alt -> endpoint [ 0 ] . desc . wMaxPacketSize ) ; reg_w ( sd , R51x_FIFO_PSIZE , packet_size >> 5 ) ; reg_w ( sd , R511_CAM_UV_EN , 0x01 ) ; reg_w ( sd , R511_SNAP_UV_EN , 0x01 ) ; reg_w ( sd , R511_SNAP_OPTS , 0x03 ) ; hsegs = ( sd -> gspca_dev . pixfmt . width >> 3 ) - 1 ; vsegs = ( sd -> gspca_dev . pixfmt . height >> 3 ) - 1 ; reg_w ( sd , R511_CAM_PXCNT , hsegs ) ; reg_w ( sd , R511_CAM_LNCNT , vsegs ) ; reg_w ( sd , R511_CAM_PXDIV , 0x00 ) ; reg_w ( sd , R511_CAM_LNDIV , 0x00 ) ; reg_w ( sd , R511_CAM_OPTS , 0x03 ) ; reg_w ( sd , R511_SNAP_PXCNT , hsegs ) ; reg_w ( sd , R511_SNAP_LNCNT , vsegs ) ; reg_w ( sd , R511_SNAP_PXDIV , 0x00 ) ; reg_w ( sd , R511_SNAP_LNDIV , 0x00 ) ; if ( frame_rate > 0 ) sd -> frame_rate = frame_rate ; switch ( sd -> sensor ) { case SEN_OV6620 : sd -> clockdiv = 3 ; break ; case SEN_OV7620 : case SEN_OV7620AE : case SEN_OV7640 : case SEN_OV7648 : case SEN_OV76BE : if ( sd -> gspca_dev . pixfmt . width == 320 ) interlaced = 1 ; case SEN_OV6630 : case SEN_OV7610 : case SEN_OV7670 : switch ( sd -> frame_rate ) { case 30 : case 25 : if ( sd -> gspca_dev . pixfmt . width != 640 ) { sd -> clockdiv = 0 ; break ; } default : sd -> clockdiv = 1 ; break ; case 10 : sd -> clockdiv = 2 ; break ; case 5 : sd -> clockdiv = 5 ; break ; } if ( interlaced ) { sd -> clockdiv = ( sd -> clockdiv + 1 ) * 2 - 1 ; if ( sd -> clockdiv > 10 ) sd -> clockdiv = 10 ; } break ; case SEN_OV8610 : sd -> clockdiv = 0 ; break ; } fps = ( interlaced ? 60 : 30 ) / ( sd -> clockdiv + 1 ) + 1 ; needed = fps * sd -> gspca_dev . pixfmt . width * sd -> gspca_dev . pixfmt . height * 3 / 2 ; if ( needed > 1000 * packet_size ) { reg_w ( sd , R511_COMP_EN , 0x07 ) ; reg_w ( sd , R511_COMP_LUT_EN , 0x03 ) ; } else { reg_w ( sd , R511_COMP_EN , 0x06 ) ; reg_w ( sd , R511_COMP_LUT_EN , 0x00 ) ; } reg_w ( sd , R51x_SYS_RESET , OV511_RESET_OMNICE ) ; reg_w ( sd , R51x_SYS_RESET , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = - EIO ; return ; } if ( alt -> desc . bNumEndpoints < 1 ) { sd -> gspca_dev . usb_err = - ENODEV\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15265\n\n```\nCWE-362 struct snd_seq_client_port * snd_seq_create_port ( struct snd_seq_client * client , int port ) { unsigned long flags ; struct snd_seq_client_port * new_port , * p ; int num = - 1 ; if ( snd_BUG_ON ( ! client ) ) return NULL ; if ( client -> num_ports >= SNDRV_SEQ_MAX_PORTS ) { pr_warn ( \"ALSA:<S2SV_blank>seq:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>ports<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%d\\\\n\" , client -> number ) ; return NULL ; } new_port = kzalloc ( sizeof ( * new_port ) , GFP_KERNEL ) ; if ( ! new_port ) return NULL ; new_port -> addr . client = client -> number ; new_port -> addr . port = - 1 ; new_port -> owner = THIS_MODULE ; sprintf ( new_port -> name , \"port-%d\" , num ) ; snd_use_lock_init ( & new_port -> use_lock ) ; port_subs_info_init ( & new_port -> c_src ) ; port_subs_info_init ( & new_port -> c_dest ) ; <S2SV_StartBug> num = port >= 0 ? port : 0 ; <S2SV_EndBug> mutex_lock ( & client -> ports_mutex ) ; write_lock_irqsave ( & client -> ports_lock , flags ) ; list_for_each_entry ( p , & client -> ports_list_head , list ) { if ( p -> addr . port > num ) break ; if ( port < 0 ) num = p -> addr . port + 1 ; } list_add_tail ( & new_port -> list , & p -> list ) ; client -> num_ports ++ ; new_port -> addr . port = num ; <S2SV_StartBug> write_unlock_irqrestore ( & client -> ports_lock , flags ) ; <S2SV_EndBug> <S2SV_StartBug> mutex_unlock ( & client -> ports_mutex ) ; <S2SV_EndBug> sprintf ( new_port -> name , \"port-%d\" , num ) ; return new_port ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c_dest ) ; snd_use_lock_use ( & new_port -> use_lock ) ; <S2SV_ModStart> = num ; sprintf ( new_port -> name , \"port-%d\" , num ) ; <S2SV_ModStart> client -> ports_mutex <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3076\n\n```\nCWE-200 static int skcipher_recvmsg ( struct kiocb * unused , struct socket * sock , struct msghdr * msg , size_t ignored , int flags ) { struct sock * sk = sock -> sk ; struct alg_sock * ask = alg_sk ( sk ) ; struct skcipher_ctx * ctx = ask -> private ; unsigned bs = crypto_ablkcipher_blocksize ( crypto_ablkcipher_reqtfm ( & ctx -> req ) ) ; struct skcipher_sg_list * sgl ; struct scatterlist * sg ; unsigned long iovlen ; struct iovec * iov ; int err = - EAGAIN ; int used ; long copied = 0 ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> for ( iov = msg -> msg_iov , iovlen = msg -> msg_iovlen ; iovlen > 0 ; iovlen -- , iov ++ ) { unsigned long seglen = iov -> iov_len ; char __user * from = iov -> iov_base ; while ( seglen ) { sgl = list_first_entry ( & ctx -> tsgl , struct skcipher_sg_list , list ) ; sg = sgl -> sg ; while ( ! sg -> length ) sg ++ ; used = ctx -> used ; if ( ! used ) { err = skcipher_wait_for_data ( sk , flags ) ; if ( err ) goto unlock ; } used = min_t ( unsigned long , used , seglen ) ; used = af_alg_make_sg ( & ctx -> rsgl , from , used , 1 ) ; err = used ; if ( err < 0 ) goto unlock ; if ( ctx -> more || used < ctx -> used ) used -= used % bs ; err = - EINVAL ; if ( ! used ) goto free ; ablkcipher_request_set_crypt ( & ctx -> req , sg , ctx -> rsgl . sg , used , ctx -> iv ) ; err = af_alg_wait_for_completion ( ctx -> enc ? crypto_ablkcipher_encrypt ( & ctx -> req ) : crypto_ablkcipher_decrypt ( & ctx -> req ) , & ctx -> completion ) ; free : af_alg_free_sg ( & ctx -> rsgl ) ; if ( err ) goto unlock ; copied += used ; from += used ; seglen -= used ; skcipher_pull_sgl ( sk , used ) ; } } err = 0 ; unlock : skcipher_wmem_wakeup ( sk ) ; release_sock ( sk ) ; return copied ? : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; msg -> msg_namelen = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18885\n\n```\nCWE-476 static long btrfs_ioctl_dev_info ( struct btrfs_fs_info * fs_info , void __user * arg ) { struct btrfs_ioctl_dev_info_args * di_args ; struct btrfs_device * dev ; int ret = 0 ; char * s_uuid = NULL ; di_args = memdup_user ( arg , sizeof ( * di_args ) ) ; if ( IS_ERR ( di_args ) ) return PTR_ERR ( di_args ) ; if ( ! btrfs_is_empty_uuid ( di_args -> uuid ) ) s_uuid = di_args -> uuid ; rcu_read_lock ( ) ; dev = btrfs_find_device ( fs_info -> fs_devices , di_args -> devid , s_uuid , <S2SV_StartBug> NULL ) ; <S2SV_EndBug> if ( ! dev ) { ret = - ENODEV ; goto out ; } di_args -> devid = dev -> devid ; di_args -> bytes_used = btrfs_device_get_bytes_used ( dev ) ; di_args -> total_bytes = btrfs_device_get_total_bytes ( dev ) ; memcpy ( di_args -> uuid , dev -> uuid , sizeof ( di_args -> uuid ) ) ; if ( dev -> name ) { strncpy ( di_args -> path , rcu_str_deref ( dev -> name ) , sizeof ( di_args -> path ) - 1 ) ; di_args -> path [ sizeof ( di_args -> path ) - 1 ] = 0 ; } else { di_args -> path [ 0 ] = '\\\\0' ; } out : rcu_read_unlock ( ) ; if ( ret == 0 && copy_to_user ( arg , di_args , sizeof ( * di_args ) ) ) ret = - EFAULT ; kfree ( di_args ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s_uuid , NULL , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int ocfs2_set_acl ( handle_t * handle , struct inode * inode , struct buffer_head * di_bh , int type , struct posix_acl * acl , struct ocfs2_alloc_context * meta_ac , struct ocfs2_alloc_context * data_ac ) { int name_index ; void * value = NULL ; size_t size = 0 ; int ret ; if ( S_ISLNK ( inode -> i_mode ) ) return - EOPNOTSUPP ; switch ( type ) { case ACL_TYPE_ACCESS : name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> umode_t mode = inode -> i_mode ; <S2SV_EndBug> <S2SV_StartBug> ret = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> if ( ret < 0 ) return ret ; if ( ret == 0 ) acl = NULL ; ret = ocfs2_acl_set_mode ( inode , di_bh , handle , mode ) ; if ( ret ) return ret ; } break ; case ACL_TYPE_DEFAULT : name_index = OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = ocfs2_acl_to_xattr ( acl , & size ) ; if ( IS_ERR ( value ) ) return ( int ) PTR_ERR ( value ) ; } if ( handle ) ret = ocfs2_xattr_set_handle ( handle , inode , di_bh , name_index , \"\" , value , size , 0 , meta_ac , data_ac ) ; else ret = ocfs2_xattr_set ( inode , name_index , \"\" , value , size , 0 ) ; kfree ( value ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { umode_t mode ; ret = posix_acl_update_mode ( inode <S2SV_ModEnd> , & mode <S2SV_ModStart> , & mode , & acl ) ; if ( ret ) return ret <S2SV_ModEnd> ; ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12899\n\n```\nCWE-125 void decnet_print ( netdissect_options * ndo , register const u_char * ap , register u_int length , register u_int caplen ) { register const union routehdr * rhp ; register int mflags ; int dst , src , hops ; u_int nsplen , pktlen ; const u_char * nspp ; if ( length < sizeof ( struct shorthdr ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } ND_TCHECK2 ( * ap , sizeof ( short ) ) ; pktlen = EXTRACT_LE_16BITS ( ap ) ; if ( pktlen < sizeof ( struct shorthdr ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } if ( pktlen > length ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } length = pktlen ; rhp = ( const union routehdr * ) & ( ap [ sizeof ( short ) ] ) ; ND_TCHECK ( rhp -> rh_short . sh_flags ) ; mflags = EXTRACT_LE_8BITS ( rhp -> rh_short . sh_flags ) ; if ( mflags & RMF_PAD ) { u_int padlen = mflags & RMF_PADMASK ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"[pad:%d]<S2SV_blank>\" , padlen ) ) ; if ( length < padlen + 2 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } ND_TCHECK2 ( ap [ sizeof ( short ) ] , padlen ) ; ap += padlen ; length -= padlen ; caplen -= padlen ; rhp = ( const union routehdr * ) & ( ap [ sizeof ( short ) ] ) ; <S2SV_StartBug> mflags = EXTRACT_LE_8BITS ( rhp -> rh_short . sh_flags ) ; <S2SV_EndBug> } if ( mflags & RMF_FVER ) { ND_PRINT ( ( ndo , \"future-version-decnet\" ) ) ; ND_DEFAULTPRINT ( ap , min ( length , caplen ) ) ; return ; } if ( mflags & RMF_CTLMSG ) { if ( ! print_decnet_ctlmsg ( ndo , rhp , length , caplen ) ) goto trunc ; return ; } switch ( mflags & RMF_MASK ) { case RMF_LONG : if ( length < sizeof ( struct longhdr ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } ND_TCHECK ( rhp -> rh_long ) ; dst = EXTRACT_LE_16BITS ( rhp -> rh_long . lg_dst . dne_remote . dne_nodeaddr ) ; src = EXTRACT_LE_16BITS ( rhp -> rh_long . lg_src . dne_remote . dne_nodeaddr ) ; hops = EXTRACT_LE_8BITS ( rhp -> rh_long . lg_visits ) ; nspp = & ( ap [ sizeof ( short ) + sizeof ( struct longhdr ) ] ) ; nsplen = length - sizeof ( struct longhdr ) ; break ; case RMF_SHORT : ND_TCHECK ( rhp -> rh_short ) ; dst = EXTRACT_LE_16BITS ( rhp -> rh_short . sh_dst ) ; src = EXTRACT_LE_16BITS ( rhp -> rh_short . sh_src ) ; hops = ( EXTRACT_LE_8BITS ( rhp -> rh_short . sh_visits ) & VIS_MASK ) + 1 ; nspp = & ( ap [ sizeof ( short ) + sizeof ( struct shorthdr ) ] ) ; nsplen = length - sizeof ( struct shorthdr ) ; break ; default : ND_PRINT ( ( ndo , \"unknown<S2SV_blank>message<S2SV_blank>flags<S2SV_blank>under<S2SV_blank>mask\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) ap , min ( length , caplen ) ) ; return ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s<S2SV_blank>%d<S2SV_blank>\" , dnaddr_string ( ndo , src ) , dnaddr_string ( ndo , dst ) , pktlen ) ) ; if ( ndo -> ndo_vflag ) { if ( mflags & RMF_RQR ) ND_PRINT ( ( ndo , \"RQR<S2SV_blank>\" ) ) ; if ( mflags & RMF_RTS ) ND_PRINT ( ( ndo , \"RTS<S2SV_blank>\" ) ) ; if ( mflags & RMF_IE ) ND_PRINT ( ( ndo , \"IE<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"%d<S2SV_blank>hops<S2SV_blank>\" , hops ) ) ; } if ( ! print_nsp ( ndo , nspp , nsplen ) ) goto trunc ; return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; ND_TCHECK ( rhp -> rh_short . sh_flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26567\n\n```\nCWE-000 int main ( int argc , char * argv [ ] ) { int result ; int infoOnly = 0 ; int writeToStdio = 0 ; int readFromStdin = 0 ; int object_type = LC ; int def_srate = 0 ; int downMatrix = 0 ; int format = 1 ; int outputFormat = FAAD_FMT_16BIT ; int outfile_set = 0 ; int adts_out = 0 ; int old_format = 0 ; int showHelp = 0 ; int mp4file = 0 ; int noGapless = 0 ; char * fnp ; <S2SV_StartBug> char aacFileName [ 255 ] ; <S2SV_EndBug> char audioFileName [ 255 ] ; char adtsFileName [ 255 ] ; unsigned char header [ 8 ] ; float length = 0 ; FILE * hMP4File ; # ifdef _WIN32 long begin ; # else clock_t begin ; # endif unsigned long cap = NeAACDecGetCapabilities ( ) ; progName = argv [ 0 ] ; while ( 1 ) { int c = - 1 ; int option_index = 0 ; static struct option long_options [ ] = { { \"quiet\" , 0 , 0 , 'q' } , { \"outfile\" , 0 , 0 , 'o' } , { \"adtsout\" , 0 , 0 , 'a' } , { \"oldformat\" , 0 , 0 , 't' } , { \"format\" , 0 , 0 , 'f' } , { \"bits\" , 0 , 0 , 'b' } , { \"samplerate\" , 0 , 0 , 's' } , { \"objecttype\" , 0 , 0 , 'l' } , { \"downmix\" , 0 , 0 , 'd' } , { \"info\" , 0 , 0 , 'i' } , { \"stdio\" , 0 , 0 , 'w' } , { \"stdio\" , 0 , 0 , 'g' } , { \"help\" , 0 , 0 , 'h' } , { 0 , 0 , 0 , 0 } } ; c = getopt_long ( argc , argv , \"o:a:s:f:b:l:wgdhitq\" , long_options , & option_index ) ; if ( c == - 1 ) break ; switch ( c ) { case 'o' : if ( optarg ) { outfile_set = 1 ; <S2SV_StartBug> strcpy ( audioFileName , optarg ) ; <S2SV_EndBug> } break ; case 'a' : if ( optarg ) { adts_out = 1 ; <S2SV_StartBug> strcpy ( adtsFileName , optarg ) ; <S2SV_EndBug> } break ; case 's' : if ( optarg ) { char dr [ 10 ] ; if ( sscanf ( optarg , \"%s\" , dr ) < 1 ) { def_srate = 0 ; } else { def_srate = atoi ( dr ) ; } } break ; case 'f' : if ( optarg ) { char dr [ 10 ] ; if ( sscanf ( optarg , \"%s\" , dr ) < 1 ) { format = 1 ; } else { format = atoi ( dr ) ; if ( ( format < 1 ) || ( format > 2 ) ) showHelp = 1 ; } } break ; case 'b' : if ( optarg ) { char dr [ 10 ] ; if ( sscanf ( optarg , \"%s\" , dr ) < 1 ) { outputFormat = FAAD_FMT_16BIT ; } else { outputFormat = atoi ( dr ) ; if ( ( outputFormat < 1 ) || ( outputFormat > 5 ) ) showHelp = 1 ; } } break ; case 'l' : if ( optarg ) { char dr [ 10 ] ; if ( sscanf ( optarg , \"%s\" , dr ) < 1 ) { object_type = LC ; } else { object_type = atoi ( dr ) ; if ( ( object_type != LC ) && ( object_type != MAIN ) && ( object_type != LTP ) && ( object_type != LD ) ) { showHelp = 1 ; } } } break ; case 't' : old_format = 1 ; break ; case 'd' : downMatrix = 1 ; break ; case 'w' : writeToStdio = 1 ; break ; case 'g' : noGapless = 1 ; break ; case 'i' : infoOnly = 1 ; break ; case 'h' : showHelp = 1 ; break ; case 'q' : quiet = 1 ; break ; default : break ; } } faad_fprintf ( stderr , \"<S2SV_blank>***********<S2SV_blank>Ahead<S2SV_blank>Software<S2SV_blank>MPEG-4<S2SV_blank>AAC<S2SV_blank>Decoder<S2SV_blank>V%s<S2SV_blank>******************\\\\n\\\\n\" , FAAD2_VERSION ) ; faad_fprintf ( stderr , \"<S2SV_blank>Build:<S2SV_blank>%s\\\\n\" , __DATE__ ) ; faad_fprintf ( stderr , \"<S2SV_blank>Copyright<S2SV_blank>2002-2004:<S2SV_blank>Ahead<S2SV_blank>Software<S2SV_blank>AG\\\\n\" ) ; faad_fprintf ( stderr , \"<S2SV_blank>http://www.audiocoding.com\\\\n\" ) ; if ( cap & FIXED_POINT_CAP ) faad_fprintf ( stderr , \"<S2SV_blank>Fixed<S2SV_blank>point<S2SV_blank>version\\\\n\" ) ; else faad_fprintf ( stderr , \"<S2SV_blank>Floating<S2SV_blank>point<S2SV_blank>version\\\\n\" ) ; faad_fprintf ( stderr , \"\\\\n\" ) ; faad_fprintf ( stderr , \"<S2SV_blank>This<S2SV_blank>program<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>you<S2SV_blank>can<S2SV_blank>redistribute<S2SV_blank>it<S2SV_blank>and/or<S2SV_blank>modify\\\\n\" ) ; faad_fprintf ( stderr , \"<S2SV_blank>it<S2SV_blank>under<S2SV_blank>the<S2SV_blank>terms<S2SV_blank>of<S2SV_blank>the<S2SV_blank>GNU<S2SV_blank>General<S2SV_blank>Public<S2SV_blank>License.\\\\n\" ) ; faad_fprintf ( stderr , \"\\\\n\" ) ; faad_fprintf ( stderr , \"<S2SV_blank>**************************************************************************\\\\n\\\\n\" ) ; if ( ( ( argc - optind ) < 1 ) || showHelp ) { usage ( ) ; return 1 ; } # if 0 if ( writeToStdio == 1 ) { format = 2 ; } <S2SV_StartBug> # endif <S2SV_EndBug> strcpy ( aacFileName , argv [ optind ] ) ; # ifdef _WIN32 begin = GetTickCount ( ) ; # else begin = clock ( ) ; # endif if ( ! writeToStdio && ! outfile_set ) { <S2SV_StartBug> strcpy ( audioFileName , aacFileName ) ; <S2SV_EndBug> fnp = ( char * ) strrchr ( audioFileName , '.' ) ; if ( fnp ) fnp [ 0 ] = '\\\\0' ; strcat ( audioFileName , file_ext [ format ] ) ; } if ( 0 == strcmp ( aacFileName , \"-\" ) ) { faad_fprintf ( stderr , \"Reading<S2SV_blank>from<S2SV_blank>stdin:<S2SV_blank>%s\\\\n\" , aacFileName ) ; readFromStdin = 1 ; hMP4File = stdin ; # ifdef _WIN32 setmode ( fileno ( stdin ) , O_BINARY ) ; # endif } else { mp4file = 0 ; hMP4File = fopen ( aacFileName , \"rb\" ) ; if ( ! hMP4File ) { faad_fprintf ( stderr , \"Error<S2SV_blank>opening<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , aacFileName ) ; return 1 ; } } fread ( header , 1 , 8 , hMP4File ) ; if ( ! readFromStdin ) fclose ( hMP4File ) ; if ( header [ 4 ] == 'f' && header [ 5 ] == 't' && header [ 6 ] == 'y' && header [ 7 ] == 'p' ) mp4file = 1 ; if ( mp4file ) { result = decodeMP4file ( aacFileName , audioFileName , adtsFileName , writeToStdio , outputFormat , format , downMatrix , noGapless , infoOnly , adts_out , & length ) ; } else { if ( readFromStdin == 1 ) { ungetc ( header [ 7 ] , hMP4File ) ; ungetc ( header [ 6 ] , hMP4File ) ; ungetc ( header [ 5 ] , hMP4File ) ; ungetc ( header [ 4 ] , hMP4File ) ; ungetc ( header [ 3 ] , hMP4File ) ; ungetc ( header [ 2 ] , hMP4File ) ; ungetc ( header [ 1 ] , hMP4File ) ; ungetc ( header [ 0 ] , hMP4File ) ; } result = decodeAACfile ( aacFileName , audioFileName , adtsFileName , writeToStdio , def_srate , object_type , outputFormat , format , downMatrix , infoOnly , adts_out , old_format , & length ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( ! result && ! infoOnly ) { # ifdef _WIN32 float dec_length = ( float ) ( GetTickCount ( ) - begin ) / 1000.0 ; SetConsoleTitle ( \"FAAD\" ) ; # else float dec_length = ( float ) ( clock ( ) - begin ) / ( float ) CLOCKS_PER_SEC ; # endif faad_fprintf ( stderr , \"Decoding<S2SV_blank>%s<S2SV_blank>took:<S2SV_blank>%5.2f<S2SV_blank>sec.<S2SV_blank>%5.2fx<S2SV_blank>real-time.\\\\n\" , aacFileName , dec_length , length / dec_length ) ; } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fnp ; char * aacFileName = NULL ; char * audioFileName = NULL ; char * adtsFileName = NULL <S2SV_ModEnd> ; unsigned char <S2SV_ModStart> = 1 ; audioFileName = ( char * ) malloc ( sizeof ( char ) * ( strlen ( optarg ) + 1 ) ) ; if ( audioFileName == NULL ) { faad_fprintf ( stderr , \"Error<S2SV_blank>allocating<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>audioFileName.\\\\n\" ) ; return 1 ; } <S2SV_ModStart> = 1 ; adtsFileName = ( char * ) malloc ( sizeof ( char ) * ( strlen ( optarg ) + 1 ) ) ; if ( adtsFileName == NULL ) { faad_fprintf ( stderr , \"Error<S2SV_blank>allocating<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>adtsFileName.\\\\n\" ) ; return 1 ; } <S2SV_ModStart> } # endif aacFileName = ( char * ) malloc ( sizeof ( char ) * ( strlen ( argv [ optind ] ) + 1 ) ) ; if ( aacFileName == NULL ) { faad_fprintf ( stderr , \"Error<S2SV_blank>allocating<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>aacFileName.\\\\n\" ) ; return 1 ; } <S2SV_ModStart> outfile_set ) { audioFileName = ( char * ) malloc ( sizeof ( char ) * ( strlen ( aacFileName ) + strlen ( file_ext [ format ] ) + 1 ) ) ; if ( audioFileName == NULL ) { faad_fprintf ( stderr , \"Error<S2SV_blank>allocating<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>audioFileName.\\\\n\" ) ; return 1 ; } <S2SV_ModStart> ) ; } if ( audioFileName != NULL ) free ( audioFileName ) ; if ( adtsFileName != NULL ) free ( adtsFileName ) ; <S2SV_ModStart> ) ; } if ( aacFileName != NULL ) free ( aacFileName ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-476 static void put_crypt_info ( struct fscrypt_info * ci ) { if ( ! ci ) return ; <S2SV_StartBug> key_put ( ci -> ci_keyring_key ) ; <S2SV_EndBug> crypto_free_skcipher ( ci -> ci_ctfm ) ; kmem_cache_free ( fscrypt_info_cachep , ci ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; <S2SV_ModEnd> crypto_free_skcipher ( ci\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12588\n\n```\nCWE-134 static rsRetVal createSocket ( instanceConf_t * info , void * * sock ) { int rv ; sublist * sub ; * sock = zsocket_new ( s_context , info -> type ) ; if ( ! sock ) { errmsg . LogError ( 0 , RS_RET_INVALID_PARAMS , \"zsocket_new<S2SV_blank>failed:<S2SV_blank>%s,<S2SV_blank>for<S2SV_blank>type<S2SV_blank>%d\" , zmq_strerror ( errno ) , info -> type ) ; return RS_RET_INVALID_PARAMS ; } DBGPRINTF ( \"imzmq3:<S2SV_blank>socket<S2SV_blank>of<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>created<S2SV_blank>successfully\\\\n\" , info -> type ) if ( info -> identity ) zsocket_set_identity ( * sock , info -> identity ) ; if ( info -> sndBuf > - 1 ) zsocket_set_sndbuf ( * sock , info -> sndBuf ) ; if ( info -> rcvBuf > - 1 ) zsocket_set_rcvbuf ( * sock , info -> rcvBuf ) ; if ( info -> linger > - 1 ) zsocket_set_linger ( * sock , info -> linger ) ; if ( info -> backlog > - 1 ) zsocket_set_backlog ( * sock , info -> backlog ) ; if ( info -> sndTimeout > - 1 ) zsocket_set_sndtimeo ( * sock , info -> sndTimeout ) ; if ( info -> rcvTimeout > - 1 ) zsocket_set_rcvtimeo ( * sock , info -> rcvTimeout ) ; if ( info -> maxMsgSize > - 1 ) zsocket_set_maxmsgsize ( * sock , info -> maxMsgSize ) ; if ( info -> rate > - 1 ) zsocket_set_rate ( * sock , info -> rate ) ; if ( info -> recoveryIVL > - 1 ) zsocket_set_recovery_ivl ( * sock , info -> recoveryIVL ) ; if ( info -> multicastHops > - 1 ) zsocket_set_multicast_hops ( * sock , info -> multicastHops ) ; if ( info -> reconnectIVL > - 1 ) zsocket_set_reconnect_ivl ( * sock , info -> reconnectIVL ) ; if ( info -> reconnectIVLMax > - 1 ) zsocket_set_reconnect_ivl_max ( * sock , info -> reconnectIVLMax ) ; if ( info -> ipv4Only > - 1 ) zsocket_set_ipv4only ( * sock , info -> ipv4Only ) ; if ( info -> affinity > - 1 ) zsocket_set_affinity ( * sock , info -> affinity ) ; if ( info -> sndHWM > - 1 ) zsocket_set_sndhwm ( * sock , info -> sndHWM ) ; if ( info -> rcvHWM > - 1 ) zsocket_set_rcvhwm ( * sock , info -> rcvHWM ) ; if ( info -> type == ZMQ_SUB ) { for ( sub = info -> subscriptions ; sub != NULL ; sub = sub -> next ) { zsocket_set_subscribe ( * sock , sub -> subscribe ) ; } } if ( info -> action == ACTION_CONNECT ) { <S2SV_StartBug> rv = zsocket_connect ( * sock , info -> description ) ; <S2SV_EndBug> if ( rv == - 1 ) { errmsg . LogError ( 0 , RS_RET_INVALID_PARAMS , \"zmq_connect<S2SV_blank>using<S2SV_blank>%s<S2SV_blank>failed:<S2SV_blank>%s\" , info -> description , zmq_strerror ( errno ) ) ; return RS_RET_INVALID_PARAMS ; } DBGPRINTF ( \"imzmq3:<S2SV_blank>connect<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>successful\\\\n\" , info -> description ) ; } else { <S2SV_StartBug> rv = zsocket_bind ( * sock , info -> description ) ; <S2SV_EndBug> if ( rv == - 1 ) { errmsg . LogError ( 0 , RS_RET_INVALID_PARAMS , \"zmq_bind<S2SV_blank>using<S2SV_blank>%s<S2SV_blank>failed:<S2SV_blank>%s\" , info -> description , zmq_strerror ( errno ) ) ; return RS_RET_INVALID_PARAMS ; } DBGPRINTF ( \"imzmq3:<S2SV_blank>bind<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>successful\\\\n\" , info -> description ) ; } return RS_RET_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * sock , \"%s\" , <S2SV_ModStart> * sock , \"%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9074\n\n```\nCWE-125 static struct sk_buff * ipv6_gso_segment ( struct sk_buff * skb , netdev_features_t features ) { struct sk_buff * segs = ERR_PTR ( - EINVAL ) ; struct ipv6hdr * ipv6h ; const struct net_offload * ops ; int proto ; struct frag_hdr * fptr ; unsigned int unfrag_ip6hlen ; unsigned int payload_len ; u8 * prevhdr ; int offset = 0 ; bool encap , udpfrag ; int nhoff ; bool gso_partial ; skb_reset_network_header ( skb ) ; nhoff = skb_network_header ( skb ) - skb_mac_header ( skb ) ; if ( unlikely ( ! pskb_may_pull ( skb , sizeof ( * ipv6h ) ) ) ) goto out ; encap = SKB_GSO_CB ( skb ) -> encap_level > 0 ; if ( encap ) features &= skb -> dev -> hw_enc_features ; SKB_GSO_CB ( skb ) -> encap_level += sizeof ( * ipv6h ) ; ipv6h = ipv6_hdr ( skb ) ; __skb_pull ( skb , sizeof ( * ipv6h ) ) ; segs = ERR_PTR ( - EPROTONOSUPPORT ) ; proto = ipv6_gso_pull_exthdrs ( skb , ipv6h -> nexthdr ) ; if ( skb -> encapsulation && skb_shinfo ( skb ) -> gso_type & ( SKB_GSO_IPXIP4 | SKB_GSO_IPXIP6 ) ) udpfrag = proto == IPPROTO_UDP && encap ; else udpfrag = proto == IPPROTO_UDP && ! skb -> encapsulation ; ops = rcu_dereference ( inet6_offloads [ proto ] ) ; if ( likely ( ops && ops -> callbacks . gso_segment ) ) { skb_reset_transport_header ( skb ) ; segs = ops -> callbacks . gso_segment ( skb , features ) ; } if ( IS_ERR_OR_NULL ( segs ) ) goto out ; gso_partial = ! ! ( skb_shinfo ( segs ) -> gso_type & SKB_GSO_PARTIAL ) ; for ( skb = segs ; skb ; skb = skb -> next ) { ipv6h = ( struct ipv6hdr * ) ( skb_mac_header ( skb ) + nhoff ) ; if ( gso_partial ) payload_len = skb_shinfo ( skb ) -> gso_size + SKB_GSO_CB ( skb ) -> data_offset + skb -> head - ( unsigned char * ) ( ipv6h + 1 ) ; else payload_len = skb -> len - nhoff - sizeof ( * ipv6h ) ; ipv6h -> payload_len = htons ( payload_len ) ; skb -> network_header = ( u8 * ) ipv6h - skb -> head ; if ( udpfrag ) { unfrag_ip6hlen = ip6_find_1stfragopt ( skb , & prevhdr ) ; <S2SV_StartBug> fptr = ( struct frag_hdr * ) ( ( u8 * ) ipv6h + unfrag_ip6hlen ) ; <S2SV_EndBug> fptr -> frag_off = htons ( offset ) ; if ( skb -> next ) fptr -> frag_off |= htons ( IP6_MF ) ; offset += ( ntohs ( ipv6h -> payload_len ) - sizeof ( struct frag_hdr ) ) ; } if ( encap ) skb_reset_inner_headers ( skb ) ; } out : return segs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prevhdr ) ; if ( unfrag_ip6hlen < 0 ) return ERR_PTR ( unfrag_ip6hlen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2744\n\n```\nCWE-000 struct sk_buff * nf_ct_frag6_gather ( struct sk_buff * skb , u32 user ) { struct sk_buff * clone ; struct net_device * dev = skb -> dev ; struct frag_hdr * fhdr ; struct nf_ct_frag6_queue * fq ; struct ipv6hdr * hdr ; int fhoff , nhoff ; u8 prevhdr ; struct sk_buff * ret_skb = NULL ; if ( ipv6_hdr ( skb ) -> payload_len == 0 ) { pr_debug ( \"payload<S2SV_blank>len<S2SV_blank>=<S2SV_blank>0\\\\n\" ) ; return skb ; } if ( find_prev_fhdr ( skb , & prevhdr , & nhoff , & fhoff ) < 0 ) return skb ; clone = skb_clone ( skb , GFP_ATOMIC ) ; if ( clone == NULL ) { pr_debug ( \"Can\\'t<S2SV_blank>clone<S2SV_blank>skb\\\\n\" ) ; return skb ; } NFCT_FRAG6_CB ( clone ) -> orig = skb ; if ( ! pskb_may_pull ( clone , fhoff + sizeof ( * fhdr ) ) ) { pr_debug ( \"message<S2SV_blank>is<S2SV_blank>too<S2SV_blank>short.\\\\n\" ) ; goto ret_orig ; } skb_set_transport_header ( clone , fhoff ) ; hdr = ipv6_hdr ( clone ) ; fhdr = ( struct frag_hdr * ) skb_transport_header ( clone ) ; <S2SV_StartBug> if ( ! ( fhdr -> frag_off & htons ( 0xFFF9 ) ) ) { <S2SV_EndBug> pr_debug ( \"Invalid<S2SV_blank>fragment<S2SV_blank>offset\\\\n\" ) ; goto ret_orig ; } if ( atomic_read ( & nf_init_frags . mem ) > nf_init_frags . high_thresh ) nf_ct_frag6_evictor ( ) ; fq = fq_find ( fhdr -> identification , user , & hdr -> saddr , & hdr -> daddr ) ; if ( fq == NULL ) { pr_debug ( \"Can\\'t<S2SV_blank>find<S2SV_blank>and<S2SV_blank>can\\'t<S2SV_blank>create<S2SV_blank>new<S2SV_blank>queue\\\\n\" ) ; goto ret_orig ; } spin_lock_bh ( & fq -> q . lock ) ; if ( nf_ct_frag6_queue ( fq , clone , fhdr , nhoff ) < 0 ) { spin_unlock_bh ( & fq -> q . lock ) ; pr_debug ( \"Can\\'t<S2SV_blank>insert<S2SV_blank>skb<S2SV_blank>to<S2SV_blank>queue\\\\n\" ) ; fq_put ( fq ) ; goto ret_orig ; } if ( fq -> q . last_in == ( INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN ) && fq -> q . meat == fq -> q . len ) { ret_skb = nf_ct_frag6_reasm ( fq , dev ) ; if ( ret_skb == NULL ) pr_debug ( \"Can\\'t<S2SV_blank>reassemble<S2SV_blank>fragmented<S2SV_blank>packets\\\\n\" ) ; } spin_unlock_bh ( & fq -> q . lock ) ; fq_put ( fq ) ; return ret_skb ; ret_orig : kfree_skb ( clone ) ; return skb ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> atomic_read ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9990\n\n```\nCWE-119 static av_cold int xpm_decode_close ( AVCodecContext * avctx ) { XPMDecContext * x = avctx -> priv_data ; av_freep ( & x -> pixels ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pixels ) ; av_freep ( & x -> buf ) ; x -> buf_size = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6560\n\n```\nCWE-436 static void flatpak_proxy_client_init ( FlatpakProxyClient * client ) { init_side ( client , & client -> client_side ) ; init_side ( client , & client -> bus_side ) ; <S2SV_StartBug> client -> auth_end_offset = AUTH_END_INIT_OFFSET ; <S2SV_EndBug> client -> rewrite_reply = g_hash_table_new_full ( g_direct_hash , g_direct_equal , NULL , g_object_unref ) ; client -> get_owner_reply = g_hash_table_new_full ( g_direct_hash , g_direct_equal , NULL , g_free ) ; client -> unique_id_policy = g_hash_table_new_full ( g_str_hash , g_str_equal , g_free , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; client -> auth_buffer = g_byte_array_new ( ) <S2SV_ModEnd> ; client ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static void write_version ( FILE * fp , const char * fname , const char * dirname , xref_t * xref ) { long start ; char * c , * new_fname , data ; FILE * new_fp ; start = ftell ( fp ) ; if ( ( c = strstr ( fname , \".pdf\" ) ) ) * c = '\\\\0' ; <S2SV_StartBug> new_fname = malloc ( strlen ( fname ) + strlen ( dirname ) + 16 ) ; <S2SV_EndBug> snprintf ( new_fname , strlen ( fname ) + strlen ( dirname ) + 16 , \"%s/%s-version-%d.pdf\" , dirname , fname , xref -> version ) ; if ( ! ( new_fp = fopen ( new_fname , \"w\" ) ) ) { ERR ( \"Could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , new_fname ) ; fseek ( fp , start , SEEK_SET ) ; free ( new_fname ) ; return ; } fseek ( fp , 0 , SEEK_SET ) ; while ( fread ( & data , 1 , 1 , fp ) ) fwrite ( & data , 1 , 1 , new_fp ) ; fprintf ( new_fp , \"\\\\r\\\\nstartxref\\\\r\\\\n%ld\\\\r\\\\n%%%%EOF\" , xref -> start ) ; fclose ( new_fp ) ; free ( new_fname ) ; fseek ( fp , start , SEEK_SET ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; new_fname = safe_calloc <S2SV_ModEnd> ( strlen (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 int generic_permission ( struct inode * inode , int mask ) { int ret ; ret = acl_permission_check ( inode , mask ) ; if ( ret != - EACCES ) return ret ; if ( S_ISDIR ( inode -> i_mode ) ) { <S2SV_StartBug> if ( inode_capable ( inode , CAP_DAC_OVERRIDE ) ) <S2SV_EndBug> return 0 ; if ( ! ( mask & MAY_WRITE ) ) <S2SV_StartBug> if ( inode_capable ( inode , CAP_DAC_READ_SEARCH ) ) <S2SV_EndBug> return 0 ; return - EACCES ; } if ( ! ( mask & MAY_EXEC ) || ( inode -> i_mode & S_IXUGO ) ) <S2SV_StartBug> if ( inode_capable ( inode , CAP_DAC_OVERRIDE ) ) <S2SV_EndBug> return 0 ; mask &= MAY_READ | MAY_WRITE | MAY_EXEC ; if ( mask == MAY_READ ) <S2SV_StartBug> if ( inode_capable ( inode , CAP_DAC_READ_SEARCH ) ) <S2SV_EndBug> return 0 ; return - EACCES ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode , <S2SV_ModStart> ) if ( capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode , <S2SV_ModStart> ) if ( capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode , <S2SV_ModStart> ) if ( capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Pairs * hstoreArrayToPairs ( ArrayType * a , int * npairs ) { Datum * key_datums ; bool * key_nulls ; int key_count ; Pairs * key_pairs ; int bufsiz ; int i , j ; deconstruct_array ( a , TEXTOID , - 1 , false , 'i' , & key_datums , & key_nulls , & key_count ) ; if ( key_count == 0 ) { * npairs = 0 ; return NULL ; } <S2SV_StartBug> key_pairs = palloc ( sizeof ( Pairs ) * key_count ) ; <S2SV_EndBug> for ( i = 0 , j = 0 ; i < key_count ; i ++ ) { if ( ! key_nulls [ i ] ) { key_pairs [ j ] . key = VARDATA ( key_datums [ i ] ) ; key_pairs [ j ] . keylen = VARSIZE ( key_datums [ i ] ) - VARHDRSZ ; key_pairs [ j ] . val = NULL ; key_pairs [ j ] . vallen = 0 ; key_pairs [ j ] . needfree = 0 ; key_pairs [ j ] . isnull = 1 ; j ++ ; } } * npairs = hstoreUniquePairs ( key_pairs , j , & bufsiz ) ; return key_pairs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } if ( key_count > MaxAllocSize / sizeof ( Pairs ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>pairs<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , key_count , ( int ) ( MaxAllocSize / sizeof ( Pairs ) ) ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static int do_ip_setsockopt ( struct sock * sk , int level , int optname , char __user * optval , unsigned int optlen ) { struct inet_sock * inet = inet_sk ( sk ) ; int val = 0 , err ; if ( ( ( 1 << optname ) & ( ( 1 << IP_PKTINFO ) | ( 1 << IP_RECVTTL ) | ( 1 << IP_RECVOPTS ) | ( 1 << IP_RECVTOS ) | ( 1 << IP_RETOPTS ) | ( 1 << IP_TOS ) | ( 1 << IP_TTL ) | ( 1 << IP_HDRINCL ) | ( 1 << IP_MTU_DISCOVER ) | ( 1 << IP_RECVERR ) | ( 1 << IP_ROUTER_ALERT ) | ( 1 << IP_FREEBIND ) | ( 1 << IP_PASSSEC ) | ( 1 << IP_TRANSPARENT ) | ( 1 << IP_MINTTL ) | ( 1 << IP_NODEFRAG ) ) ) || optname == IP_MULTICAST_TTL || optname == IP_MULTICAST_ALL || optname == IP_MULTICAST_LOOP || optname == IP_RECVORIGDSTADDR ) { if ( optlen >= sizeof ( int ) ) { if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; } else if ( optlen >= sizeof ( char ) ) { unsigned char ucval ; if ( get_user ( ucval , ( unsigned char __user * ) optval ) ) return - EFAULT ; val = ( int ) ucval ; } } if ( ip_mroute_opt ( optname ) ) return ip_mroute_setsockopt ( sk , optname , optval , optlen ) ; err = 0 ; lock_sock ( sk ) ; switch ( optname ) { case IP_OPTIONS : { <S2SV_StartBug> struct ip_options * opt = NULL ; <S2SV_EndBug> if ( optlen > 40 ) goto e_inval ; err = ip_options_get_from_user ( sock_net ( sk ) , & opt , optval , optlen ) ; if ( err ) <S2SV_StartBug> break ; <S2SV_EndBug> if ( inet -> is_icsk ) { struct inet_connection_sock * icsk = inet_csk ( sk ) ; # if defined ( CONFIG_IPV6 ) || defined ( CONFIG_IPV6_MODULE ) if ( sk -> sk_family == PF_INET || ( ! ( ( 1 << sk -> sk_state ) & ( TCPF_LISTEN | TCPF_CLOSE ) ) && inet -> inet_daddr != LOOPBACK4_IPV6 ) ) { # endif <S2SV_StartBug> if ( inet -> opt ) <S2SV_EndBug> <S2SV_StartBug> icsk -> icsk_ext_hdr_len -= inet -> opt -> optlen ; <S2SV_EndBug> if ( opt ) <S2SV_StartBug> icsk -> icsk_ext_hdr_len += opt -> optlen ; <S2SV_EndBug> icsk -> icsk_sync_mss ( sk , icsk -> icsk_pmtu_cookie ) ; # if defined ( CONFIG_IPV6 ) || defined ( CONFIG_IPV6_MODULE ) } # endif } <S2SV_StartBug> opt = xchg ( & inet -> opt , opt ) ; <S2SV_EndBug> kfree ( opt ) ; break ; } case IP_PKTINFO : if ( val ) inet -> cmsg_flags |= IP_CMSG_PKTINFO ; else inet -> cmsg_flags &= ~ IP_CMSG_PKTINFO ; break ; case IP_RECVTTL : if ( val ) inet -> cmsg_flags |= IP_CMSG_TTL ; else inet -> cmsg_flags &= ~ IP_CMSG_TTL ; break ; case IP_RECVTOS : if ( val ) inet -> cmsg_flags |= IP_CMSG_TOS ; else inet -> cmsg_flags &= ~ IP_CMSG_TOS ; break ; case IP_RECVOPTS : if ( val ) inet -> cmsg_flags |= IP_CMSG_RECVOPTS ; else inet -> cmsg_flags &= ~ IP_CMSG_RECVOPTS ; break ; case IP_RETOPTS : if ( val ) inet -> cmsg_flags |= IP_CMSG_RETOPTS ; else inet -> cmsg_flags &= ~ IP_CMSG_RETOPTS ; break ; case IP_PASSSEC : if ( val ) inet -> cmsg_flags |= IP_CMSG_PASSSEC ; else inet -> cmsg_flags &= ~ IP_CMSG_PASSSEC ; break ; case IP_RECVORIGDSTADDR : if ( val ) inet -> cmsg_flags |= IP_CMSG_ORIGDSTADDR ; else inet -> cmsg_flags &= ~ IP_CMSG_ORIGDSTADDR ; break ; case IP_TOS : if ( sk -> sk_type == SOCK_STREAM ) { val &= ~ 3 ; val |= inet -> tos & 3 ; } if ( inet -> tos != val ) { inet -> tos = val ; sk -> sk_priority = rt_tos2priority ( val ) ; sk_dst_reset ( sk ) ; } break ; case IP_TTL : if ( optlen < 1 ) goto e_inval ; if ( val != - 1 && ( val < 0 || val > 255 ) ) goto e_inval ; inet -> uc_ttl = val ; break ; case IP_HDRINCL : if ( sk -> sk_type != SOCK_RAW ) { err = - ENOPROTOOPT ; break ; } inet -> hdrincl = val ? 1 : 0 ; break ; case IP_NODEFRAG : if ( sk -> sk_type != SOCK_RAW ) { err = - ENOPROTOOPT ; break ; } inet -> nodefrag = val ? 1 : 0 ; break ; case IP_MTU_DISCOVER : if ( val < IP_PMTUDISC_DONT || val > IP_PMTUDISC_PROBE ) goto e_inval ; inet -> pmtudisc = val ; break ; case IP_RECVERR : inet -> recverr = ! ! val ; if ( ! val ) skb_queue_purge ( & sk -> sk_error_queue ) ; break ; case IP_MULTICAST_TTL : if ( sk -> sk_type == SOCK_STREAM ) goto e_inval ; if ( optlen < 1 ) goto e_inval ; if ( val == - 1 ) val = 1 ; if ( val < 0 || val > 255 ) goto e_inval ; inet -> mc_ttl = val ; break ; case IP_MULTICAST_LOOP : if ( optlen < 1 ) goto e_inval ; inet -> mc_loop = ! ! val ; break ; case IP_MULTICAST_IF : { struct ip_mreqn mreq ; struct net_device * dev = NULL ; if ( sk -> sk_type == SOCK_STREAM ) goto e_inval ; if ( optlen < sizeof ( struct in_addr ) ) goto e_inval ; err = - EFAULT ; if ( optlen >= sizeof ( struct ip_mreqn ) ) { if ( copy_from_user ( & mreq , optval , sizeof ( mreq ) ) ) break ; } else { memset ( & mreq , 0 , sizeof ( mreq ) ) ; if ( optlen >= sizeof ( struct in_addr ) && copy_from_user ( & mreq . imr_address , optval , sizeof ( struct in_addr ) ) ) break ; } if ( ! mreq . imr_ifindex ) { if ( mreq . imr_address . s_addr == htonl ( INADDR_ANY ) ) { inet -> mc_index = 0 ; inet -> mc_addr = 0 ; err = 0 ; break ; } dev = ip_dev_find ( sock_net ( sk ) , mreq . imr_address . s_addr ) ; if ( dev ) mreq . imr_ifindex = dev -> ifindex ; } else dev = dev_get_by_index ( sock_net ( sk ) , mreq . imr_ifindex ) ; err = - EADDRNOTAVAIL ; if ( ! dev ) break ; dev_put ( dev ) ; err = - EINVAL ; if ( sk -> sk_bound_dev_if && mreq . imr_ifindex != sk -> sk_bound_dev_if ) break ; inet -> mc_index = mreq . imr_ifindex ; inet -> mc_addr = mreq . imr_address . s_addr ; err = 0 ; break ; } case IP_ADD_MEMBERSHIP : case IP_DROP_MEMBERSHIP : { struct ip_mreqn mreq ; err = - EPROTO ; if ( inet_sk ( sk ) -> is_icsk ) break ; if ( optlen < sizeof ( struct ip_mreq ) ) goto e_inval ; err = - EFAULT ; if ( optlen >= sizeof ( struct ip_mreqn ) ) { if ( copy_from_user ( & mreq , optval , sizeof ( mreq ) ) ) break ; } else { memset ( & mreq , 0 , sizeof ( mreq ) ) ; if ( copy_from_user ( & mreq , optval , sizeof ( struct ip_mreq ) ) ) break ; } if ( optname == IP_ADD_MEMBERSHIP ) err = ip_mc_join_group ( sk , & mreq ) ; else err = ip_mc_leave_group ( sk , & mreq ) ; break ; } case IP_MSFILTER : { struct ip_msfilter * msf ; if ( optlen < IP_MSFILTER_SIZE ( 0 ) ) goto e_inval ; if ( optlen > sysctl_optmem_max ) { err = - ENOBUFS ; break ; } msf = kmalloc ( optlen , GFP_KERNEL ) ; if ( ! msf ) { err = - ENOBUFS ; break ; } err = - EFAULT ; if ( copy_from_user ( msf , optval , optlen ) ) { kfree ( msf ) ; break ; } if ( msf -> imsf_numsrc >= 0x3ffffffcU || msf -> imsf_numsrc > sysctl_igmp_max_msf ) { kfree ( msf ) ; err = - ENOBUFS ; break ; } if ( IP_MSFILTER_SIZE ( msf -> imsf_numsrc ) > optlen ) { kfree ( msf ) ; err = - EINVAL ; break ; } err = ip_mc_msfilter ( sk , msf , 0 ) ; kfree ( msf ) ; break ; } case IP_BLOCK_SOURCE : case IP_UNBLOCK_SOURCE : case IP_ADD_SOURCE_MEMBERSHIP : case IP_DROP_SOURCE_MEMBERSHIP : { struct ip_mreq_source mreqs ; int omode , add ; if ( optlen != sizeof ( struct ip_mreq_source ) ) goto e_inval ; if ( copy_from_user ( & mreqs , optval , sizeof ( mreqs ) ) ) { err = - EFAULT ; break ; } if ( optname == IP_BLOCK_SOURCE ) { omode = MCAST_EXCLUDE ; add = 1 ; } else if ( optname == IP_UNBLOCK_SOURCE ) { omode = MCAST_EXCLUDE ; add = 0 ; } else if ( optname == IP_ADD_SOURCE_MEMBERSHIP ) { struct ip_mreqn mreq ; mreq . imr_multiaddr . s_addr = mreqs . imr_multiaddr ; mreq . imr_address . s_addr = mreqs . imr_interface ; mreq . imr_ifindex = 0 ; err = ip_mc_join_group ( sk , & mreq ) ; if ( err && err != - EADDRINUSE ) break ; omode = MCAST_INCLUDE ; add = 1 ; } else { omode = MCAST_INCLUDE ; add = 0 ; } err = ip_mc_source ( add , omode , sk , & mreqs , 0 ) ; break ; } case MCAST_JOIN_GROUP : case MCAST_LEAVE_GROUP : { struct group_req greq ; struct sockaddr_in * psin ; struct ip_mreqn mreq ; if ( optlen < sizeof ( struct group_req ) ) goto e_inval ; err = - EFAULT ; if ( copy_from_user ( & greq , optval , sizeof ( greq ) ) ) break ; psin = ( struct sockaddr_in * ) & greq . gr_group ; if ( psin -> sin_family != AF_INET ) goto e_inval ; memset ( & mreq , 0 , sizeof ( mreq ) ) ; mreq . imr_multiaddr = psin -> sin_addr ; mreq . imr_ifindex = greq . gr_interface ; if ( optname == MCAST_JOIN_GROUP ) err = ip_mc_join_group ( sk , & mreq ) ; else err = ip_mc_leave_group ( sk , & mreq ) ; break ; } case MCAST_JOIN_SOURCE_GROUP : case MCAST_LEAVE_SOURCE_GROUP : case MCAST_BLOCK_SOURCE : case MCAST_UNBLOCK_SOURCE : { struct group_source_req greqs ; struct ip_mreq_source mreqs ; struct sockaddr_in * psin ; int omode , add ; if ( optlen != sizeof ( struct group_source_req ) ) goto e_inval ; if ( copy_from_user ( & greqs , optval , sizeof ( greqs ) ) ) { err = - EFAULT ; break ; } if ( greqs . gsr_group . ss_family != AF_INET || greqs . gsr_source . ss_family != AF_INET ) { err = - EADDRNOTAVAIL ; break ; } psin = ( struct sockaddr_in * ) & greqs . gsr_group ; mreqs . imr_multiaddr = psin -> sin_addr . s_addr ; psin = ( struct sockaddr_in * ) & greqs . gsr_source ; mreqs . imr_sourceaddr = psin -> sin_addr . s_addr ; mreqs . imr_interface = 0 ; if ( optname == MCAST_BLOCK_SOURCE ) { omode = MCAST_EXCLUDE ; add = 1 ; } else if ( optname == MCAST_UNBLOCK_SOURCE ) { omode = MCAST_EXCLUDE ; add = 0 ; } else if ( optname == MCAST_JOIN_SOURCE_GROUP ) { struct ip_mreqn mreq ; psin = ( struct sockaddr_in * ) & greqs . gsr_group ; mreq . imr_multiaddr = psin -> sin_addr ; mreq . imr_address . s_addr = 0 ; mreq . imr_ifindex = greqs . gsr_interface ; err = ip_mc_join_group ( sk , & mreq ) ; if ( err && err != - EADDRINUSE ) break ; greqs . gsr_interface = mreq . imr_ifindex ; omode = MCAST_INCLUDE ; add = 1 ; } else { omode = MCAST_INCLUDE ; add = 0 ; } err = ip_mc_source ( add , omode , sk , & mreqs , greqs . gsr_interface ) ; break ; } case MCAST_MSFILTER : { struct sockaddr_in * psin ; struct ip_msfilter * msf = NULL ; struct group_filter * gsf = NULL ; int msize , i , ifindex ; if ( optlen < GROUP_FILTER_SIZE ( 0 ) ) goto e_inval ; if ( optlen > sysctl_optmem_max ) { err = - ENOBUFS ; break ; } gsf = kmalloc ( optlen , GFP_KERNEL ) ; if ( ! gsf ) { err = - ENOBUFS ; break ; } err = - EFAULT ; if ( copy_from_user ( gsf , optval , optlen ) ) goto mc_msf_out ; if ( gsf -> gf_numsrc >= 0x1ffffff || gsf -> gf_numsrc > sysctl_igmp_max_msf ) { err = - ENOBUFS ; goto mc_msf_out ; } if ( GROUP_FILTER_SIZE ( gsf -> gf_numsrc ) > optlen ) { err = - EINVAL ; goto mc_msf_out ; } msize = IP_MSFILTER_SIZE ( gsf -> gf_numsrc ) ; msf = kmalloc ( msize , GFP_KERNEL ) ; if ( ! msf ) { err = - ENOBUFS ; goto mc_msf_out ; } ifindex = gsf -> gf_interface ; psin = ( struct sockaddr_in * ) & gsf -> gf_group ; if ( psin -> sin_family != AF_INET ) { err = - EADDRNOTAVAIL ; goto mc_msf_out ; } msf -> imsf_multiaddr = psin -> sin_addr . s_addr ; msf -> imsf_interface = 0 ; msf -> imsf_fmode = gsf -> gf_fmode ; msf -> imsf_numsrc = gsf -> gf_numsrc ; err = - EADDRNOTAVAIL ; for ( i = 0 ; i < gsf -> gf_numsrc ; ++ i ) { psin = ( struct sockaddr_in * ) & gsf -> gf_slist [ i ] ; if ( psin -> sin_family != AF_INET ) goto mc_msf_out ; msf -> imsf_slist [ i ] = psin -> sin_addr . s_addr ; } kfree ( gsf ) ; gsf = NULL ; err = ip_mc_msfilter ( sk , msf , ifindex ) ; mc_msf_out : kfree ( msf ) ; kfree ( gsf ) ; break ; } case IP_MULTICAST_ALL : if ( optlen < 1 ) goto e_inval ; if ( val != 0 && val != 1 ) goto e_inval ; inet -> mc_all = val ; break ; case IP_ROUTER_ALERT : err = ip_ra_control ( sk , val ? 1 : 0 , NULL ) ; break ; case IP_FREEBIND : if ( optlen < 1 ) goto e_inval ; inet -> freebind = ! ! val ; break ; case IP_IPSEC_POLICY : case IP_XFRM_POLICY : err = - EPERM ; if ( ! capable ( CAP_NET_ADMIN ) ) break ; err = xfrm_user_policy ( sk , optname , optval , optlen ) ; break ; case IP_TRANSPARENT : if ( ! capable ( CAP_NET_ADMIN ) ) { err = - EPERM ; break ; } if ( optlen < 1 ) goto e_inval ; inet -> transparent = ! ! val ; break ; case IP_MINTTL : if ( optlen < 1 ) goto e_inval ; if ( val < 0 || val > 255 ) goto e_inval ; inet -> min_ttl = val ; break ; default : err = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return err ; e_inval : release_sock ( sk ) ; return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : { struct ip_options_rcu * old , <S2SV_ModEnd> * opt = <S2SV_ModStart> err ) break ; old = rcu_dereference_protected ( inet -> inet_opt , sock_owned_by_user ( sk ) ) <S2SV_ModStart> endif if ( old <S2SV_ModEnd> ) icsk -> <S2SV_ModStart> -> icsk_ext_hdr_len -= old -> opt . <S2SV_ModEnd> optlen ; if <S2SV_ModStart> += opt -> opt . <S2SV_ModStart> # endif } rcu_assign_pointer ( inet -> inet_opt , opt ) ; if ( old ) call_rcu ( & old -> rcu , opt_kfree_rcu <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void <S2SV_StartBug> l2tp_framing_cap_print ( netdissect_options * ndo , const u_char * dat ) <S2SV_EndBug> { <S2SV_StartBug> const uint32_t * ptr = ( const uint32_t * ) dat ; <S2SV_EndBug> if ( EXTRACT_32BITS ( ptr ) & L2TP_FRAMING_CAP_ASYNC_MASK ) { ND_PRINT ( ( ndo , \"A\" ) ) ; } if ( EXTRACT_32BITS ( ptr ) & L2TP_FRAMING_CAP_SYNC_MASK ) { ND_PRINT ( ( ndo , \"S\" ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_char * dat , u_int length <S2SV_ModStart> ) dat ; if ( length < 4 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int process_line ( URLContext * h , char * line , int line_count , int * new_location ) { HTTPContext * s = h -> priv_data ; const char * auto_method = h -> flags & AVIO_FLAG_READ ? \"POST\" : \"GET\" ; char * tag , * p , * end , * method , * resource , * version ; int ret ; if ( line [ 0 ] == '\\\\0' ) { s -> end_header = 1 ; return 0 ; } p = line ; if ( line_count == 0 ) { if ( s -> is_connected_server ) { method = p ; while ( * p && ! av_isspace ( * p ) ) p ++ ; * ( p ++ ) = '\\\\0' ; av_log ( h , AV_LOG_TRACE , \"Received<S2SV_blank>method:<S2SV_blank>%s\\\\n\" , method ) ; if ( s -> method ) { if ( av_strcasecmp ( s -> method , method ) ) { av_log ( h , AV_LOG_ERROR , \"Received<S2SV_blank>and<S2SV_blank>expected<S2SV_blank>HTTP<S2SV_blank>method<S2SV_blank>do<S2SV_blank>not<S2SV_blank>match.<S2SV_blank>(%s<S2SV_blank>expected,<S2SV_blank>%s<S2SV_blank>received)\\\\n\" , s -> method , method ) ; return ff_http_averror ( 400 , AVERROR ( EIO ) ) ; } } else { av_log ( h , AV_LOG_TRACE , \"Autodetected<S2SV_blank>%s<S2SV_blank>HTTP<S2SV_blank>method\\\\n\" , auto_method ) ; if ( av_strcasecmp ( auto_method , method ) ) { av_log ( h , AV_LOG_ERROR , \"Received<S2SV_blank>and<S2SV_blank>autodetected<S2SV_blank>HTTP<S2SV_blank>method<S2SV_blank>did<S2SV_blank>not<S2SV_blank>match<S2SV_blank>\" \"(%s<S2SV_blank>autodetected<S2SV_blank>%s<S2SV_blank>received)\\\\n\" , auto_method , method ) ; return ff_http_averror ( 400 , AVERROR ( EIO ) ) ; } if ( ! ( s -> method = av_strdup ( method ) ) ) return AVERROR ( ENOMEM ) ; } while ( av_isspace ( * p ) ) p ++ ; resource = p ; while ( ! av_isspace ( * p ) ) p ++ ; * ( p ++ ) = '\\\\0' ; av_log ( h , AV_LOG_TRACE , \"Requested<S2SV_blank>resource:<S2SV_blank>%s\\\\n\" , resource ) ; if ( ! ( s -> resource = av_strdup ( resource ) ) ) return AVERROR ( ENOMEM ) ; while ( av_isspace ( * p ) ) p ++ ; version = p ; while ( * p && ! av_isspace ( * p ) ) p ++ ; * p = '\\\\0' ; if ( av_strncasecmp ( version , \"HTTP/\" , 5 ) ) { av_log ( h , AV_LOG_ERROR , \"Malformed<S2SV_blank>HTTP<S2SV_blank>version<S2SV_blank>string.\\\\n\" ) ; return ff_http_averror ( 400 , AVERROR ( EIO ) ) ; } av_log ( h , AV_LOG_TRACE , \"HTTP<S2SV_blank>version<S2SV_blank>string:<S2SV_blank>%s\\\\n\" , version ) ; } else { while ( ! av_isspace ( * p ) && * p != '\\\\0' ) p ++ ; while ( av_isspace ( * p ) ) p ++ ; s -> http_code = strtol ( p , & end , 10 ) ; av_log ( h , AV_LOG_TRACE , \"http_code=%d\\\\n\" , s -> http_code ) ; if ( ( ret = check_http_code ( h , s -> http_code , end ) ) < 0 ) return ret ; } } else { while ( * p != '\\\\0' && * p != ':' ) p ++ ; if ( * p != ':' ) return 1 ; * p = '\\\\0' ; tag = line ; p ++ ; while ( av_isspace ( * p ) ) p ++ ; if ( ! av_strcasecmp ( tag , \"Location\" ) ) { if ( ( ret = parse_location ( s , p ) ) < 0 ) return ret ; * new_location = 1 ; <S2SV_StartBug> } else if ( ! av_strcasecmp ( tag , \"Content-Length\" ) && s -> filesize == - 1 ) { <S2SV_EndBug> <S2SV_StartBug> s -> filesize = strtoll ( p , NULL , 10 ) ; <S2SV_EndBug> } else if ( ! av_strcasecmp ( tag , \"Content-Range\" ) ) { parse_content_range ( h , p ) ; } else if ( ! av_strcasecmp ( tag , \"Accept-Ranges\" ) && ! strncmp ( p , \"bytes\" , 5 ) && s -> seekable == - 1 ) { h -> is_streamed = 0 ; } else if ( ! av_strcasecmp ( tag , \"Transfer-Encoding\" ) && ! av_strncasecmp ( p , \"chunked\" , 7 ) ) { <S2SV_StartBug> s -> filesize = - 1 ; <S2SV_EndBug> s -> chunksize = 0 ; } else if ( ! av_strcasecmp ( tag , \"WWW-Authenticate\" ) ) { <S2SV_StartBug> ff_http_auth_handle_header ( & s -> auth_state , tag , p ) ; <S2SV_EndBug> } else if ( ! av_strcasecmp ( tag , \"Authentication-Info\" ) ) { ff_http_auth_handle_header ( & s -> auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Proxy-Authenticate\" ) ) { ff_http_auth_handle_header ( & s -> proxy_auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Connection\" ) ) { if ( ! strcmp ( p , \"close\" ) ) s -> willclose = 1 ; } else if ( ! av_strcasecmp ( tag , \"Server\" ) ) { if ( ! av_strcasecmp ( p , \"AkamaiGHost\" ) ) { s -> is_akamai = 1 ; } else if ( ! av_strncasecmp ( p , \"MediaGateway\" , 12 ) ) { s -> is_mediagateway = 1 ; } } else if ( ! av_strcasecmp ( tag , \"Content-Type\" ) ) { av_free ( s -> mime_type ) ; s -> mime_type = av_strdup ( p ) ; } else if ( ! av_strcasecmp ( tag , \"Set-Cookie\" ) ) { if ( parse_cookie ( s , p , & s -> cookie_dict ) ) av_log ( h , AV_LOG_WARNING , \"Unable<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>\\'%s\\'\\\\n\" , p ) ; } else if ( ! av_strcasecmp ( tag , \"Icy-MetaInt\" ) ) { <S2SV_StartBug> s -> icy_metaint = strtoll ( p , NULL , 10 ) ; <S2SV_EndBug> } else if ( ! av_strncasecmp ( tag , \"Icy-\" , 4 ) ) { if ( ( ret = parse_icy ( s , tag , p ) ) < 0 ) return ret ; } else if ( ! av_strcasecmp ( tag , \"Content-Encoding\" ) ) { if ( ( ret = parse_content_encoding ( h , p ) ) < 0 ) return ret ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> filesize == UINT64_MAX <S2SV_ModEnd> ) { s <S2SV_ModStart> -> filesize = strtoull <S2SV_ModEnd> ( p , <S2SV_ModStart> -> filesize = UINT64_MAX ; s -> chunksize = 0 ; } else if ( ! av_strcasecmp ( tag , \"WWW-Authenticate\" ) ) { ff_http_auth_handle_header ( & s -> auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Authentication-Info\" ) ) { ff_http_auth_handle_header ( & s -> auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Proxy-Authenticate\" ) ) { ff_http_auth_handle_header ( & s -> proxy_auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Connection\" ) ) { if ( ! strcmp ( p , \"close\" ) ) s -> willclose = 1 ; } else if ( ! av_strcasecmp ( tag , \"Server\" ) ) { if ( ! av_strcasecmp ( p , \"AkamaiGHost\" ) ) { s -> is_akamai = 1 ; } else if ( ! av_strncasecmp ( p , \"MediaGateway\" , 12 ) ) { s -> is_mediagateway = 1 ; } } else if ( ! av_strcasecmp ( tag , \"Content-Type\" ) ) { av_free ( s -> mime_type ) ; s -> mime_type = av_strdup ( p ) ; } else if ( ! av_strcasecmp ( tag , \"Set-Cookie\" ) ) { if ( parse_cookie ( s , p , <S2SV_ModEnd> & s -> <S2SV_ModStart> & s -> <S2SV_ModEnd> cookie_dict ) ) <S2SV_ModStart> -> icy_metaint = strtoull <S2SV_ModEnd> ( p ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10067\n\n```\nCWE-119 MagickExport void * AcquireQuantumMemory ( const size_t count , const size_t quantum ) { size_t extent ; <S2SV_StartBug> if ( CheckMemoryOverflow ( count , quantum ) != MagickFalse ) <S2SV_EndBug> return ( ( void * ) NULL ) ; extent = count * quantum ; return ( AcquireMagickMemory ( extent ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( HeapOverflowSanityCheck <S2SV_ModEnd> ( count ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15538\n\n```\nCWE-400 int xfs_setattr_nonsize ( struct xfs_inode * ip , struct iattr * iattr , int flags ) { xfs_mount_t * mp = ip -> i_mount ; struct inode * inode = VFS_I ( ip ) ; int mask = iattr -> ia_valid ; xfs_trans_t * tp ; int error ; kuid_t uid = GLOBAL_ROOT_UID , iuid = GLOBAL_ROOT_UID ; kgid_t gid = GLOBAL_ROOT_GID , igid = GLOBAL_ROOT_GID ; struct xfs_dquot * udqp = NULL , * gdqp = NULL ; struct xfs_dquot * olddquot1 = NULL , * olddquot2 = NULL ; ASSERT ( ( mask & ATTR_SIZE ) == 0 ) ; if ( XFS_IS_QUOTA_ON ( mp ) && ( mask & ( ATTR_UID | ATTR_GID ) ) ) { uint qflags = 0 ; if ( ( mask & ATTR_UID ) && XFS_IS_UQUOTA_ON ( mp ) ) { uid = iattr -> ia_uid ; qflags |= XFS_QMOPT_UQUOTA ; } else { uid = inode -> i_uid ; } if ( ( mask & ATTR_GID ) && XFS_IS_GQUOTA_ON ( mp ) ) { gid = iattr -> ia_gid ; qflags |= XFS_QMOPT_GQUOTA ; } else { gid = inode -> i_gid ; } ASSERT ( udqp == NULL ) ; ASSERT ( gdqp == NULL ) ; error = xfs_qm_vop_dqalloc ( ip , xfs_kuid_to_uid ( uid ) , xfs_kgid_to_gid ( gid ) , xfs_get_projid ( ip ) , qflags , & udqp , & gdqp , NULL ) ; if ( error ) return error ; } error = xfs_trans_alloc ( mp , & M_RES ( mp ) -> tr_ichange , 0 , 0 , 0 , & tp ) ; if ( error ) goto out_dqrele ; xfs_ilock ( ip , XFS_ILOCK_EXCL ) ; xfs_trans_ijoin ( tp , ip , 0 ) ; if ( mask & ( ATTR_UID | ATTR_GID ) ) { iuid = inode -> i_uid ; igid = inode -> i_gid ; gid = ( mask & ATTR_GID ) ? iattr -> ia_gid : igid ; uid = ( mask & ATTR_UID ) ? iattr -> ia_uid : iuid ; if ( XFS_IS_QUOTA_RUNNING ( mp ) && ( ( XFS_IS_UQUOTA_ON ( mp ) && ! uid_eq ( iuid , uid ) ) || ( XFS_IS_GQUOTA_ON ( mp ) && ! gid_eq ( igid , gid ) ) ) ) { ASSERT ( tp ) ; error = xfs_qm_vop_chown_reserve ( tp , ip , udqp , gdqp , NULL , capable ( CAP_FOWNER ) ? XFS_QMOPT_FORCE_RES : 0 ) ; if ( error ) goto out_cancel ; } } if ( mask & ( ATTR_UID | ATTR_GID ) ) { if ( ( inode -> i_mode & ( S_ISUID | S_ISGID ) ) && ! capable ( CAP_FSETID ) ) inode -> i_mode &= ~ ( S_ISUID | S_ISGID ) ; if ( ! uid_eq ( iuid , uid ) ) { if ( XFS_IS_QUOTA_RUNNING ( mp ) && XFS_IS_UQUOTA_ON ( mp ) ) { ASSERT ( mask & ATTR_UID ) ; ASSERT ( udqp ) ; olddquot1 = xfs_qm_vop_chown ( tp , ip , & ip -> i_udquot , udqp ) ; } ip -> i_d . di_uid = xfs_kuid_to_uid ( uid ) ; inode -> i_uid = uid ; } if ( ! gid_eq ( igid , gid ) ) { if ( XFS_IS_QUOTA_RUNNING ( mp ) && XFS_IS_GQUOTA_ON ( mp ) ) { ASSERT ( xfs_sb_version_has_pquotino ( & mp -> m_sb ) || ! XFS_IS_PQUOTA_ON ( mp ) ) ; ASSERT ( mask & ATTR_GID ) ; ASSERT ( gdqp ) ; olddquot2 = xfs_qm_vop_chown ( tp , ip , & ip -> i_gdquot , gdqp ) ; } ip -> i_d . di_gid = xfs_kgid_to_gid ( gid ) ; inode -> i_gid = gid ; } } if ( mask & ATTR_MODE ) xfs_setattr_mode ( ip , iattr ) ; if ( mask & ( ATTR_ATIME | ATTR_CTIME | ATTR_MTIME ) ) xfs_setattr_time ( ip , iattr ) ; xfs_trans_log_inode ( tp , ip , XFS_ILOG_CORE ) ; XFS_STATS_INC ( mp , xs_ig_attrchg ) ; if ( mp -> m_flags & XFS_MOUNT_WSYNC ) xfs_trans_set_sync ( tp ) ; error = xfs_trans_commit ( tp ) ; xfs_iunlock ( ip , XFS_ILOCK_EXCL ) ; xfs_qm_dqrele ( olddquot1 ) ; xfs_qm_dqrele ( olddquot2 ) ; xfs_qm_dqrele ( udqp ) ; xfs_qm_dqrele ( gdqp ) ; if ( error ) return error ; if ( ( mask & ATTR_MODE ) && ! ( flags & XFS_ATTR_NOACL ) ) { error = posix_acl_chmod ( inode , inode -> i_mode ) ; if ( error ) return error ; } return 0 ; out_cancel : xfs_trans_cancel ( tp ) ; <S2SV_StartBug> out_dqrele : <S2SV_EndBug> xfs_qm_dqrele ( udqp ) ; xfs_qm_dqrele ( gdqp ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tp ) ; xfs_iunlock ( ip , XFS_ILOCK_EXCL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14147\n\n```\nCWE-190 static size_t optsize ( lua_State * L , char opt , const char * * fmt ) { switch ( opt ) { case 'B' : case 'b' : return sizeof ( char ) ; case 'H' : case 'h' : return sizeof ( short ) ; case 'L' : case 'l' : return sizeof ( long ) ; case 'T' : return sizeof ( size_t ) ; case 'f' : return sizeof ( float ) ; case 'd' : return sizeof ( double ) ; case 'x' : return 1 ; <S2SV_StartBug> case 'c' : return getnum ( fmt , 1 ) ; <S2SV_EndBug> case 'i' : case 'I' : { <S2SV_StartBug> int sz = getnum ( fmt , sizeof ( int ) ) ; <S2SV_EndBug> if ( sz > MAXINTSIZE ) luaL_error ( L , \"integral<S2SV_blank>size<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>limit<S2SV_blank>of<S2SV_blank>%d\" , sz , MAXINTSIZE ) ; return sz ; } default : return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return getnum ( L , <S2SV_ModStart> = getnum ( L ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void mt_decode_macroblock ( VP8D_COMP * pbi , MACROBLOCKD * xd , unsigned int mb_idx ) { MB_PREDICTION_MODE mode ; int i ; # if CONFIG_ERROR_CONCEALMENT int corruption_detected = 0 ; <S2SV_StartBug> # endif <S2SV_EndBug> if ( xd -> mode_info_context -> mbmi . mb_skip_coeff ) { vp8_reset_mb_tokens_context ( xd ) ; } else if ( ! vp8dx_bool_error ( xd -> current_bc ) ) { int eobtotal ; eobtotal = vp8_decode_mb_tokens ( pbi , xd ) ; xd -> mode_info_context -> mbmi . mb_skip_coeff = ( eobtotal == 0 ) ; } mode = xd -> mode_info_context -> mbmi . mode ; if ( xd -> segmentation_enabled ) vp8_mb_init_dequantizer ( pbi , xd ) ; # if CONFIG_ERROR_CONCEALMENT if ( pbi -> ec_active ) { int throw_residual ; throw_residual = ( ! pbi -> independent_partitions && pbi -> frame_corrupt_residual ) ; throw_residual = ( throw_residual || vp8dx_bool_error ( xd -> current_bc ) ) ; if ( ( mb_idx >= pbi -> mvs_corrupt_from_mb || throw_residual ) ) { pbi -> frame_corrupt_residual = 1 ; <S2SV_StartBug> vpx_memset ( xd -> qcoeff , 0 , sizeof ( xd -> qcoeff ) ) ; <S2SV_EndBug> vp8_conceal_corrupt_mb ( xd ) ; corruption_detected = 1 ; <S2SV_StartBug> vpx_memset ( xd -> eobs , 0 , 25 ) ; <S2SV_EndBug> } } # endif if ( xd -> mode_info_context -> mbmi . ref_frame == INTRA_FRAME ) { vp8_build_intra_predictors_mbuv_s ( xd , xd -> recon_above [ 1 ] , xd -> recon_above [ 2 ] , xd -> recon_left [ 1 ] , xd -> recon_left [ 2 ] , xd -> recon_left_stride [ 1 ] , xd -> dst . u_buffer , xd -> dst . v_buffer , xd -> dst . uv_stride ) ; if ( mode != B_PRED ) { vp8_build_intra_predictors_mby_s ( xd , xd -> recon_above [ 0 ] , xd -> recon_left [ 0 ] , xd -> recon_left_stride [ 0 ] , xd -> dst . y_buffer , xd -> dst . y_stride ) ; } else { short * DQC = xd -> dequant_y1 ; int dst_stride = xd -> dst . y_stride ; if ( xd -> mode_info_context -> mbmi . mb_skip_coeff ) <S2SV_StartBug> vpx_memset ( xd -> eobs , 0 , 25 ) ; <S2SV_EndBug> intra_prediction_down_copy ( xd , xd -> recon_above [ 0 ] + 16 ) ; for ( i = 0 ; i < 16 ; i ++ ) { BLOCKD * b = & xd -> block [ i ] ; unsigned char * dst = xd -> dst . y_buffer + b -> offset ; B_PREDICTION_MODE b_mode = xd -> mode_info_context -> bmi [ i ] . as_mode ; unsigned char * Above ; unsigned char * yleft ; int left_stride ; unsigned char top_left ; if ( i < 4 && pbi -> common . filter_level ) Above = xd -> recon_above [ 0 ] + b -> offset ; else Above = dst - dst_stride ; if ( i % 4 == 0 && pbi -> common . filter_level ) { yleft = xd -> recon_left [ 0 ] + i ; left_stride = 1 ; } else { yleft = dst - 1 ; left_stride = dst_stride ; } if ( ( i == 4 || i == 8 || i == 12 ) && pbi -> common . filter_level ) top_left = * ( xd -> recon_left [ 0 ] + i - 1 ) ; else top_left = Above [ - 1 ] ; vp8_intra4x4_predict ( Above , yleft , left_stride , b_mode , dst , dst_stride , top_left ) ; if ( xd -> eobs [ i ] ) { if ( xd -> eobs [ i ] > 1 ) { vp8_dequant_idct_add ( b -> qcoeff , DQC , dst , dst_stride ) ; } else { vp8_dc_only_idct_add ( b -> qcoeff [ 0 ] * DQC [ 0 ] , dst , dst_stride , dst , dst_stride ) ; <S2SV_StartBug> vpx_memset ( b -> qcoeff , 0 , 2 * sizeof ( b -> qcoeff [ 0 ] ) ) ; <S2SV_EndBug> } } } } } else { vp8_build_inter_predictors_mb ( xd ) ; } # if CONFIG_ERROR_CONCEALMENT if ( corruption_detected ) { return ; } # endif if ( ! xd -> mode_info_context -> mbmi . mb_skip_coeff ) { if ( mode != B_PRED ) { short * DQC = xd -> dequant_y1 ; if ( mode != SPLITMV ) { BLOCKD * b = & xd -> block [ 24 ] ; if ( xd -> eobs [ 24 ] > 1 ) { vp8_dequantize_b ( b , xd -> dequant_y2 ) ; vp8_short_inv_walsh4x4 ( & b -> dqcoeff [ 0 ] , xd -> qcoeff ) ; <S2SV_StartBug> vpx_memset ( b -> qcoeff , 0 , 16 * sizeof ( b -> qcoeff [ 0 ] ) ) ; <S2SV_EndBug> } else { b -> dqcoeff [ 0 ] = b -> qcoeff [ 0 ] * xd -> dequant_y2 [ 0 ] ; vp8_short_inv_walsh4x4_1 ( & b -> dqcoeff [ 0 ] , xd -> qcoeff ) ; <S2SV_StartBug> vpx_memset ( b -> qcoeff , 0 , 2 * sizeof ( b -> qcoeff [ 0 ] ) ) ; <S2SV_EndBug> } DQC = xd -> dequant_y1_dc ; } vp8_dequant_idct_add_y_block ( xd -> qcoeff , DQC , xd -> dst . y_buffer , xd -> dst . y_stride , xd -> eobs ) ; } vp8_dequant_idct_add_uv_block ( xd -> qcoeff + 16 * 16 , xd -> dequant_uv , xd -> dst . u_buffer , xd -> dst . v_buffer , xd -> dst . uv_stride , xd -> eobs + 16 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; # else ( void ) mb_idx ; # <S2SV_ModStart> = 1 ; memset <S2SV_ModEnd> ( xd -> <S2SV_ModStart> = 1 ; memset <S2SV_ModEnd> ( xd -> <S2SV_ModStart> . mb_skip_coeff ) memset <S2SV_ModEnd> ( xd -> <S2SV_ModStart> dst_stride ) ; memset <S2SV_ModEnd> ( b -> <S2SV_ModStart> qcoeff ) ; memset <S2SV_ModEnd> ( b -> <S2SV_ModStart> qcoeff ) ; memset <S2SV_ModEnd> ( b ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13020\n\n```\nCWE-125 void vtp_print ( netdissect_options * ndo , const u_char * pptr , u_int length ) { int type , len , tlv_len , tlv_value , mgmtd_len ; const u_char * tptr ; const struct vtp_vlan_ * vtp_vlan ; if ( length < VTP_HEADER_LEN ) goto trunc ; tptr = pptr ; ND_TCHECK2 ( * tptr , VTP_HEADER_LEN ) ; type = * ( tptr + 1 ) ; ND_PRINT ( ( ndo , \"VTPv%u,<S2SV_blank>Message<S2SV_blank>%s<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u\" , * tptr , tok2str ( vtp_message_type_values , \"Unknown<S2SV_blank>message<S2SV_blank>type\" , type ) , type , length ) ) ; if ( ndo -> ndo_vflag < 1 ) { return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\tDomain<S2SV_blank>name:<S2SV_blank>\" ) ) ; mgmtd_len = * ( tptr + 3 ) ; if ( mgmtd_len < 1 || mgmtd_len > 32 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[invalid<S2SV_blank>MgmtD<S2SV_blank>Len<S2SV_blank>%d]\" , mgmtd_len ) ) ; return ; } fn_printzp ( ndo , tptr + 4 , mgmtd_len , NULL ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s:<S2SV_blank>%u\" , tok2str ( vtp_header_values , \"Unknown\" , type ) , * ( tptr + 2 ) ) ) ; tptr += VTP_HEADER_LEN ; switch ( type ) { case VTP_SUMMARY_ADV : ND_TCHECK2 ( * tptr , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Config<S2SV_blank>Rev<S2SV_blank>%x,<S2SV_blank>Updater<S2SV_blank>%s\" , EXTRACT_32BITS ( tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; tptr += 8 ; ND_TCHECK2 ( * tptr , VTP_UPDATE_TIMESTAMP_LEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Timestamp<S2SV_blank>0x%08x<S2SV_blank>0x%08x<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) ) ) ; tptr += VTP_UPDATE_TIMESTAMP_LEN ; ND_TCHECK2 ( * tptr , VTP_MD5_DIGEST_LEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>MD5<S2SV_blank>digest:<S2SV_blank>%08x%08x%08x%08x\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , EXTRACT_32BITS ( tptr + 12 ) ) ) ; tptr += VTP_MD5_DIGEST_LEN ; break ; case VTP_SUBSET_ADV : <S2SV_StartBug> ND_PRINT ( ( ndo , \",<S2SV_blank>Config<S2SV_blank>Rev<S2SV_blank>%x\" , EXTRACT_32BITS ( tptr ) ) ) ; <S2SV_EndBug> tptr += 4 ; <S2SV_StartBug> while ( tptr < ( pptr + length ) ) { <S2SV_EndBug> len = * tptr ; if ( len == 0 ) break ; ND_TCHECK2 ( * tptr , len ) ; vtp_vlan = ( const struct vtp_vlan_ * ) tptr ; ND_TCHECK ( * vtp_vlan ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\tVLAN<S2SV_blank>info<S2SV_blank>status<S2SV_blank>%s,<S2SV_blank>type<S2SV_blank>%s,<S2SV_blank>VLAN-id<S2SV_blank>%u,<S2SV_blank>MTU<S2SV_blank>%u,<S2SV_blank>SAID<S2SV_blank>0x%08x,<S2SV_blank>Name<S2SV_blank>\" , tok2str ( vtp_vlan_status , \"Unknown\" , vtp_vlan -> status ) , tok2str ( vtp_vlan_type_values , \"Unknown\" , vtp_vlan -> type ) , EXTRACT_16BITS ( & vtp_vlan -> vlanid ) , EXTRACT_16BITS ( & vtp_vlan -> mtu ) , EXTRACT_32BITS ( & vtp_vlan -> index ) ) ) ; fn_printzp ( ndo , tptr + VTP_VLAN_INFO_OFFSET , vtp_vlan -> name_len , NULL ) ; len -= VTP_VLAN_INFO_OFFSET + 4 * ( ( vtp_vlan -> name_len + 3 ) / 4 ) ; tptr += VTP_VLAN_INFO_OFFSET + 4 * ( ( vtp_vlan -> name_len + 3 ) / 4 ) ; while ( len > 0 ) { type = * tptr ; tlv_len = * ( tptr + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t%s<S2SV_blank>(0x%04x)<S2SV_blank>TLV\" , tok2str ( vtp_vlan_tlv_values , \"Unknown\" , type ) , type ) ) ; if ( type == 0 || tlv_len == 0 ) { return ; } ND_TCHECK2 ( * tptr , tlv_len * 2 + 2 ) ; tlv_value = EXTRACT_16BITS ( tptr + 2 ) ; switch ( type ) { case VTP_VLAN_STE_HOP_COUNT : ND_PRINT ( ( ndo , \",<S2SV_blank>%u\" , tlv_value ) ) ; break ; case VTP_VLAN_PRUNING : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u)\" , tlv_value == 1 ? \"Enabled\" : \"Disabled\" , tlv_value ) ) ; break ; case VTP_VLAN_STP_TYPE : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( vtp_stp_type_values , \"Unknown\" , tlv_value ) , tlv_value ) ) ; break ; case VTP_VLAN_BRIDGE_TYPE : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u)\" , tlv_value == 1 ? \"SRB\" : \"SRT\" , tlv_value ) ) ; break ; case VTP_VLAN_BACKUP_CRF_MODE : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u)\" , tlv_value == 1 ? \"Backup\" : \"Not<S2SV_blank>backup\" , tlv_value ) ) ; break ; case VTP_VLAN_SOURCE_ROUTING_RING_NUMBER : case VTP_VLAN_SOURCE_ROUTING_BRIDGE_NUMBER : case VTP_VLAN_PARENT_VLAN : case VTP_VLAN_TRANS_BRIDGED_VLAN : case VTP_VLAN_ARP_HOP_COUNT : default : print_unknown_data ( ndo , tptr , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>\" , 2 + tlv_len * 2 ) ; break ; } len -= 2 + tlv_len * 2 ; tptr += 2 + tlv_len * 2 ; } } break ; case VTP_ADV_REQUEST : ND_TCHECK2 ( * tptr , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\tStart<S2SV_blank>value:<S2SV_blank>%u\" , EXTRACT_32BITS ( tptr ) ) ) ; break ; case VTP_JOIN_MESSAGE : break ; default : break ; } return ; trunc : ND_PRINT ( ( ndo , \"[|vtp]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case VTP_SUBSET_ADV : ND_TCHECK_32BITS ( tptr ) ; <S2SV_ModStart> ) ) { ND_TCHECK_8BITS ( tptr ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9756\n\n```\nCWE-369 sf_count_t psf_fwrite ( const void * ptr , sf_count_t bytes , sf_count_t items , SF_PRIVATE * psf ) { sf_count_t total = 0 ; <S2SV_StartBug> ssize_t count ; <S2SV_EndBug> if ( psf -> virtual_io ) return psf -> vio . write ( ptr , bytes * items , psf -> vio_user_data ) / bytes ; items *= bytes ; if ( items <= 0 ) return 0 ; while ( items > 0 ) { count = ( items > SENSIBLE_SIZE ) ? SENSIBLE_SIZE : items ; count = write ( psf -> file . filedes , ( ( const char * ) ptr ) + total , count ) ; if ( count == - 1 ) { if ( errno == EINTR ) continue ; psf_log_syserr ( psf , errno ) ; break ; } ; if ( count == 0 ) break ; total += count ; items -= count ; } ; if ( psf -> is_pipe ) psf -> pipeoffset += total ; return total / bytes ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ssize_t count ; if ( bytes == 0 || items == 0 ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13038\n\n```\nCWE-125 static void handle_mlppp ( netdissect_options * ndo , const u_char * p , int length ) { if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"MLPPP,<S2SV_blank>\" ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"seq<S2SV_blank>0x%03x,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>length<S2SV_blank>%u\" , <S2SV_EndBug> ( EXTRACT_16BITS ( p ) ) & 0x0fff , bittok2str ( ppp_ml_flag_values , \"none\" , * p & 0xc0 ) , length ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( length < 2 ) { ND_PRINT ( ( ndo , \"[|mlppp]\" ) ) ; return ; } if ( ! ND_TTEST_16BITS ( p ) ) { ND_PRINT ( ( ndo , \"[|mlppp]\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4302\n\n```\nCWE-119 static int parse_codes ( struct archive_read * a ) { int i , j , val , n , r ; unsigned char bitlengths [ MAX_SYMBOLS ] , zerocount , ppmd_flags ; unsigned int maxorder ; struct huffman_code precode ; struct rar * rar = ( struct rar * ) ( a -> format -> data ) ; struct rar_br * br = & ( rar -> br ) ; free_codes ( a ) ; rar_br_consume_unalined_bits ( br ) ; if ( ! rar_br_read_ahead ( a , br , 1 ) ) goto truncated_data ; if ( ( rar -> is_ppmd_block = rar_br_bits ( br , 1 ) ) != 0 ) { rar_br_consume ( br , 1 ) ; if ( ! rar_br_read_ahead ( a , br , 7 ) ) goto truncated_data ; ppmd_flags = rar_br_bits ( br , 7 ) ; rar_br_consume ( br , 7 ) ; if ( ppmd_flags & 0x20 ) { if ( ! rar_br_read_ahead ( a , br , 8 ) ) goto truncated_data ; rar -> dictionary_size = ( rar_br_bits ( br , 8 ) + 1 ) << 20 ; rar_br_consume ( br , 8 ) ; } if ( ppmd_flags & 0x40 ) { if ( ! rar_br_read_ahead ( a , br , 8 ) ) goto truncated_data ; rar -> ppmd_escape = rar -> ppmd7_context . InitEsc = rar_br_bits ( br , 8 ) ; rar_br_consume ( br , 8 ) ; } else rar -> ppmd_escape = 2 ; if ( ppmd_flags & 0x20 ) { maxorder = ( ppmd_flags & 0x1F ) + 1 ; if ( maxorder > 16 ) maxorder = 16 + ( maxorder - 16 ) * 3 ; if ( maxorder == 1 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Truncated<S2SV_blank>RAR<S2SV_blank>file<S2SV_blank>data\" ) ; return ( ARCHIVE_FATAL ) ; } __archive_ppmd7_functions . Ppmd7_Free ( & rar -> ppmd7_context , & g_szalloc ) ; rar -> bytein . a = a ; rar -> bytein . Read = & ppmd_read ; __archive_ppmd7_functions . PpmdRAR_RangeDec_CreateVTable ( & rar -> range_dec ) ; rar -> range_dec . Stream = & rar -> bytein ; __archive_ppmd7_functions . Ppmd7_Construct ( & rar -> ppmd7_context ) ; <S2SV_StartBug> if ( ! __archive_ppmd7_functions . Ppmd7_Alloc ( & rar -> ppmd7_context , <S2SV_EndBug> rar -> dictionary_size , & g_szalloc ) ) { archive_set_error ( & a -> archive , ENOMEM , \"Out<S2SV_blank>of<S2SV_blank>memory\" ) ; return ( ARCHIVE_FATAL ) ; } if ( ! __archive_ppmd7_functions . PpmdRAR_RangeDec_Init ( & rar -> range_dec ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unable<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>PPMd<S2SV_blank>range<S2SV_blank>decoder\" ) ; return ( ARCHIVE_FATAL ) ; } __archive_ppmd7_functions . Ppmd7_Init ( & rar -> ppmd7_context , maxorder ) ; rar -> ppmd_valid = 1 ; } else { if ( ! rar -> ppmd_valid ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>PPMd<S2SV_blank>sequence\" ) ; return ( ARCHIVE_FATAL ) ; } if ( ! __archive_ppmd7_functions . PpmdRAR_RangeDec_Init ( & rar -> range_dec ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unable<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>PPMd<S2SV_blank>range<S2SV_blank>decoder\" ) ; return ( ARCHIVE_FATAL ) ; } } } else { rar_br_consume ( br , 1 ) ; if ( ! rar_br_read_ahead ( a , br , 1 ) ) goto truncated_data ; if ( ! rar_br_bits ( br , 1 ) ) memset ( rar -> lengthtable , 0 , sizeof ( rar -> lengthtable ) ) ; rar_br_consume ( br , 1 ) ; memset ( & bitlengths , 0 , sizeof ( bitlengths ) ) ; for ( i = 0 ; i < MAX_SYMBOLS ; ) { if ( ! rar_br_read_ahead ( a , br , 4 ) ) goto truncated_data ; bitlengths [ i ++ ] = rar_br_bits ( br , 4 ) ; rar_br_consume ( br , 4 ) ; if ( bitlengths [ i - 1 ] == 0xF ) { if ( ! rar_br_read_ahead ( a , br , 4 ) ) goto truncated_data ; zerocount = rar_br_bits ( br , 4 ) ; rar_br_consume ( br , 4 ) ; if ( zerocount ) { i -- ; for ( j = 0 ; j < zerocount + 2 && i < MAX_SYMBOLS ; j ++ ) bitlengths [ i ++ ] = 0 ; } } } memset ( & precode , 0 , sizeof ( precode ) ) ; r = create_code ( a , & precode , bitlengths , MAX_SYMBOLS , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) { free ( precode . tree ) ; free ( precode . table ) ; return ( r ) ; } for ( i = 0 ; i < HUFFMAN_TABLE_SIZE ; ) { if ( ( val = read_next_symbol ( a , & precode ) ) < 0 ) { free ( precode . tree ) ; free ( precode . table ) ; return ( ARCHIVE_FATAL ) ; } if ( val < 16 ) { rar -> lengthtable [ i ] = ( rar -> lengthtable [ i ] + val ) & 0xF ; i ++ ; } else if ( val < 18 ) { if ( i == 0 ) { free ( precode . tree ) ; free ( precode . table ) ; archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Internal<S2SV_blank>error<S2SV_blank>extracting<S2SV_blank>RAR<S2SV_blank>file.\" ) ; return ( ARCHIVE_FATAL ) ; } if ( val == 16 ) { if ( ! rar_br_read_ahead ( a , br , 3 ) ) { free ( precode . tree ) ; free ( precode . table ) ; goto truncated_data ; } n = rar_br_bits ( br , 3 ) + 3 ; rar_br_consume ( br , 3 ) ; } else { if ( ! rar_br_read_ahead ( a , br , 7 ) ) { free ( precode . tree ) ; free ( precode . table ) ; goto truncated_data ; } n = rar_br_bits ( br , 7 ) + 11 ; rar_br_consume ( br , 7 ) ; } for ( j = 0 ; j < n && i < HUFFMAN_TABLE_SIZE ; j ++ ) { rar -> lengthtable [ i ] = rar -> lengthtable [ i - 1 ] ; i ++ ; } } else { if ( val == 18 ) { if ( ! rar_br_read_ahead ( a , br , 3 ) ) { free ( precode . tree ) ; free ( precode . table ) ; goto truncated_data ; } n = rar_br_bits ( br , 3 ) + 3 ; rar_br_consume ( br , 3 ) ; } else { if ( ! rar_br_read_ahead ( a , br , 7 ) ) { free ( precode . tree ) ; free ( precode . table ) ; goto truncated_data ; } n = rar_br_bits ( br , 7 ) + 11 ; rar_br_consume ( br , 7 ) ; } for ( j = 0 ; j < n && i < HUFFMAN_TABLE_SIZE ; j ++ ) rar -> lengthtable [ i ++ ] = 0 ; } } free ( precode . tree ) ; free ( precode . table ) ; r = create_code ( a , & rar -> maincode , & rar -> lengthtable [ 0 ] , MAINCODE_SIZE , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) return ( r ) ; r = create_code ( a , & rar -> offsetcode , & rar -> lengthtable [ MAINCODE_SIZE ] , OFFSETCODE_SIZE , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) return ( r ) ; r = create_code ( a , & rar -> lowoffsetcode , & rar -> lengthtable [ MAINCODE_SIZE + OFFSETCODE_SIZE ] , LOWOFFSETCODE_SIZE , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) return ( r ) ; r = create_code ( a , & rar -> lengthcode , & rar -> lengthtable [ MAINCODE_SIZE + OFFSETCODE_SIZE + LOWOFFSETCODE_SIZE ] , LENGTHCODE_SIZE , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) return ( r ) ; } if ( ! rar -> dictionary_size || ! rar -> lzss . window ) { void * new_window ; unsigned int new_size ; if ( rar -> unp_size >= DICTIONARY_MAX_SIZE ) new_size = DICTIONARY_MAX_SIZE ; else new_size = rar_fls ( ( unsigned int ) rar -> unp_size ) << 1 ; new_window = realloc ( rar -> lzss . window , new_size ) ; if ( new_window == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>uncompressed<S2SV_blank>data.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> lzss . window = ( unsigned char * ) new_window ; rar -> dictionary_size = new_size ; memset ( rar -> lzss . window , 0 , rar -> dictionary_size ) ; rar -> lzss . mask = rar -> dictionary_size - 1 ; } rar -> start_new_table = 0 ; return ( ARCHIVE_OK ) ; truncated_data : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Truncated<S2SV_blank>RAR<S2SV_blank>file<S2SV_blank>data\" ) ; rar -> valid = 0 ; return ( ARCHIVE_FATAL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( rar -> dictionary_size == 0 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>zero<S2SV_blank>dictionary<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1476\n\n```\nCWE-189 static int opl3_load_patch ( int dev , int format , const char __user * addr , <S2SV_StartBug> int offs , int count , int pmgr_flag ) <S2SV_EndBug> { struct sbi_instrument ins ; if ( count < sizeof ( ins ) ) { printk ( KERN_WARNING \"FM<S2SV_blank>Error:<S2SV_blank>Patch<S2SV_blank>record<S2SV_blank>too<S2SV_blank>short\\\\n\" ) ; return - EINVAL ; } <S2SV_StartBug> if ( copy_from_user ( & ( ( char * ) & ins ) [ offs ] , addr + offs , sizeof ( ins ) - offs ) ) <S2SV_EndBug> return - EFAULT ; if ( ins . channel < 0 || ins . channel >= SBFM_MAXINSTR ) { printk ( KERN_WARNING \"FM<S2SV_blank>Error:<S2SV_blank>Invalid<S2SV_blank>instrument<S2SV_blank>number<S2SV_blank>%d\\\\n\" , ins . channel ) ; return - EINVAL ; } ins . key = format ; return store_instr ( ins . channel , & ins ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * addr , <S2SV_ModEnd> int count , <S2SV_ModStart> copy_from_user ( & ins , addr <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> ( ins ) <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4081\n\n```\nCWE-476 static int ghash_update ( struct shash_desc * desc , const u8 * src , unsigned int srclen ) { struct ghash_desc_ctx * dctx = shash_desc_ctx ( desc ) ; struct ghash_ctx * ctx = crypto_shash_ctx ( desc -> tfm ) ; u8 * dst = dctx -> buffer ; <S2SV_StartBug> if ( dctx -> bytes ) { <S2SV_EndBug> int n = min ( srclen , dctx -> bytes ) ; u8 * pos = dst + ( GHASH_BLOCK_SIZE - dctx -> bytes ) ; dctx -> bytes -= n ; srclen -= n ; while ( n -- ) * pos ++ ^= * src ++ ; if ( ! dctx -> bytes ) gf128mul_4k_lle ( ( be128 * ) dst , ctx -> gf128 ) ; } while ( srclen >= GHASH_BLOCK_SIZE ) { crypto_xor ( dst , src , GHASH_BLOCK_SIZE ) ; gf128mul_4k_lle ( ( be128 * ) dst , ctx -> gf128 ) ; src += GHASH_BLOCK_SIZE ; srclen -= GHASH_BLOCK_SIZE ; } if ( srclen ) { dctx -> bytes = GHASH_BLOCK_SIZE - srclen ; while ( srclen -- ) * dst ++ ^= * src ++ ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! ctx -> gf128 ) return - ENOKEY ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 static int cg_opendir ( const char * path , struct fuse_file_info * fi ) { struct fuse_context * fc = fuse_get_context ( ) ; const char * cgroup ; struct file_info * dir_info ; char * controller = NULL ; if ( ! fc ) return - EIO ; if ( strcmp ( path , \"/cgroup\" ) == 0 ) { cgroup = NULL ; controller = NULL ; } else { controller = pick_controller_from_path ( fc , path ) ; if ( ! controller ) return - EIO ; cgroup = find_cgroup_in_path ( path ) ; if ( ! cgroup ) { cgroup = \"/\" ; } } <S2SV_StartBug> if ( cgroup && ! fc_may_access ( fc , controller , cgroup , NULL , O_RDONLY ) ) { <S2SV_EndBug> return - EACCES ; } dir_info = malloc ( sizeof ( * dir_info ) ) ; if ( ! dir_info ) return - ENOMEM ; dir_info -> controller = must_copy_string ( controller ) ; dir_info -> cgroup = must_copy_string ( cgroup ) ; dir_info -> type = LXC_TYPE_CGDIR ; dir_info -> buf = NULL ; dir_info -> file = NULL ; dir_info -> buflen = 0 ; fi -> fh = ( unsigned long ) dir_info ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( cgroup ) { if ( ! caller_may_see_dir ( fc -> pid , controller , cgroup ) ) return - ENOENT ; if ( <S2SV_ModEnd> ! fc_may_access ( <S2SV_ModStart> O_RDONLY ) ) <S2SV_ModEnd> return - EACCES\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2686\n\n```\nCWE-264 SYSCALL_DEFINE6 ( sendto , int , fd , void __user * , buff , size_t , len , unsigned int , flags , struct sockaddr __user * , addr , int , addr_len ) { struct socket * sock ; struct sockaddr_storage address ; int err ; struct msghdr msg ; struct iovec iov ; int fput_needed ; if ( len > INT_MAX ) <S2SV_StartBug> len = INT_MAX ; <S2SV_EndBug> sock = sockfd_lookup_light ( fd , & err , & fput_needed ) ; if ( ! sock ) goto out ; iov . iov_base = buff ; iov . iov_len = len ; msg . msg_name = NULL ; iov_iter_init ( & msg . msg_iter , WRITE , & iov , 1 , len ) ; msg . msg_control = NULL ; msg . msg_controllen = 0 ; msg . msg_namelen = 0 ; if ( addr ) { err = move_addr_to_kernel ( addr , addr_len , & address ) ; if ( err < 0 ) goto out_put ; msg . msg_name = ( struct sockaddr * ) & address ; msg . msg_namelen = addr_len ; } if ( sock -> file -> f_flags & O_NONBLOCK ) flags |= MSG_DONTWAIT ; msg . msg_flags = flags ; err = sock_sendmsg ( sock , & msg , len ) ; out_put : fput_light ( sock -> file , fput_needed ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = INT_MAX ; if ( unlikely ( ! access_ok ( VERIFY_READ , buff , len ) ) ) return - EFAULT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2925\n\n```\nCWE-254 static int follow_dotdot_rcu ( struct nameidata * nd ) { struct inode * inode = nd -> inode ; if ( ! nd -> root . mnt ) set_root_rcu ( nd ) ; while ( 1 ) { if ( path_equal ( & nd -> path , & nd -> root ) ) break ; if ( nd -> path . dentry != nd -> path . mnt -> mnt_root ) { struct dentry * old = nd -> path . dentry ; struct dentry * parent = old -> d_parent ; unsigned seq ; inode = parent -> d_inode ; seq = read_seqcount_begin ( & parent -> d_seq ) ; if ( unlikely ( read_seqcount_retry ( & old -> d_seq , nd -> seq ) ) ) return - ECHILD ; nd -> path . dentry = parent ; nd -> seq = seq ; <S2SV_StartBug> break ; <S2SV_EndBug> } else { struct mount * mnt = real_mount ( nd -> path . mnt ) ; struct mount * mparent = mnt -> mnt_parent ; struct dentry * mountpoint = mnt -> mnt_mountpoint ; struct inode * inode2 = mountpoint -> d_inode ; unsigned seq = read_seqcount_begin ( & mountpoint -> d_seq ) ; if ( unlikely ( read_seqretry ( & mount_lock , nd -> m_seq ) ) ) return - ECHILD ; if ( & mparent -> mnt == nd -> path . mnt ) break ; nd -> path . dentry = mountpoint ; nd -> path . mnt = & mparent -> mnt ; inode = inode2 ; nd -> seq = seq ; } } while ( unlikely ( d_mountpoint ( nd -> path . dentry ) ) ) { struct mount * mounted ; mounted = __lookup_mnt ( nd -> path . mnt , nd -> path . dentry ) ; if ( unlikely ( read_seqretry ( & mount_lock , nd -> m_seq ) ) ) return - ECHILD ; if ( ! mounted ) break ; nd -> path . mnt = & mounted -> mnt ; nd -> path . dentry = mounted -> mnt . mnt_root ; inode = nd -> path . dentry -> d_inode ; nd -> seq = read_seqcount_begin ( & nd -> path . dentry -> d_seq ) ; } nd -> inode = inode ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = seq ; if ( unlikely ( ! path_connected ( & nd -> path ) ) ) return - ENOENT ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void perf_log_throttle ( struct perf_event * event , int enable ) { struct perf_output_handle handle ; struct perf_sample_data sample ; int ret ; struct { struct perf_event_header header ; u64 time ; u64 id ; u64 stream_id ; } throttle_event = { . header = { . type = PERF_RECORD_THROTTLE , . misc = 0 , . size = sizeof ( throttle_event ) , } , . time = perf_clock ( ) , . id = primary_event_id ( event ) , . stream_id = event -> id , } ; if ( enable ) throttle_event . header . type = PERF_RECORD_UNTHROTTLE ; perf_event_header__init_id ( & throttle_event . header , & sample , event ) ; ret = perf_output_begin ( & handle , event , <S2SV_StartBug> throttle_event . header . size , 1 , 0 ) ; <S2SV_EndBug> if ( ret ) return ; perf_output_put ( & handle , throttle_event ) ; perf_event__output_id_sample ( event , & handle , & sample ) ; perf_output_end ( & handle ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . size , <S2SV_ModEnd> 0 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3610\n\n```\nCWE-264 static int wrmsr_interception ( struct vcpu_svm * svm ) { struct msr_data msr ; u32 ecx = svm -> vcpu . arch . regs [ VCPU_REGS_RCX ] ; u64 data = ( svm -> vcpu . arch . regs [ VCPU_REGS_RAX ] & - 1u ) | ( ( u64 ) ( svm -> vcpu . arch . regs [ VCPU_REGS_RDX ] & - 1u ) << 32 ) ; msr . data = data ; msr . index = ecx ; msr . host_initiated = false ; svm -> next_rip = kvm_rip_read ( & svm -> vcpu ) + 2 ; <S2SV_StartBug> if ( svm_set_msr ( & svm -> vcpu , & msr ) ) { <S2SV_EndBug> trace_kvm_msr_write_ex ( ecx , data ) ; kvm_inject_gp ( & svm -> vcpu , 0 ) ; } else { trace_kvm_msr_write ( ecx , data ) ; skip_emulated_instruction ( & svm -> vcpu ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( kvm_set_msr <S2SV_ModEnd> ( & svm\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11099\n\n```\nCWE-125 BOOL license_read_new_or_upgrade_license_packet ( rdpLicense * license , wStream * s ) { UINT32 os_major ; UINT32 os_minor ; UINT32 cbScope , cbCompanyName , cbProductId , cbLicenseInfo ; wStream * licenseStream = NULL ; BOOL ret = FALSE ; BYTE computedMac [ 16 ] ; LICENSE_BLOB * calBlob ; DEBUG_LICENSE ( \"Receiving<S2SV_blank>Server<S2SV_blank>New/Upgrade<S2SV_blank>License<S2SV_blank>Packet\" ) ; calBlob = license_new_binary_blob ( BB_DATA_BLOB ) ; if ( ! calBlob ) return FALSE ; if ( ! license_read_encrypted_blob ( license , s , calBlob ) ) goto out_free_blob ; if ( Stream_GetRemainingLength ( s ) < 16 ) goto out_free_blob ; if ( ! security_mac_data ( license -> MacSaltKey , calBlob -> data , calBlob -> length , computedMac ) ) goto out_free_blob ; if ( memcmp ( computedMac , Stream_Pointer ( s ) , sizeof ( computedMac ) ) != 0 ) { WLog_ERR ( TAG , \"new<S2SV_blank>or<S2SV_blank>upgrade<S2SV_blank>license<S2SV_blank>MAC<S2SV_blank>mismatch\" ) ; goto out_free_blob ; } if ( ! Stream_SafeSeek ( s , 16 ) ) goto out_free_blob ; licenseStream = Stream_New ( calBlob -> data , calBlob -> length ) ; if ( ! licenseStream ) goto out_free_blob ; <S2SV_StartBug> Stream_Read_UINT16 ( licenseStream , os_minor ) ; <S2SV_EndBug> Stream_Read_UINT16 ( licenseStream , os_major ) ; Stream_Read_UINT32 ( licenseStream , cbScope ) ; if ( Stream_GetRemainingLength ( licenseStream ) < cbScope ) goto out_free_stream ; # ifdef WITH_DEBUG_LICENSE WLog_DBG ( TAG , \"Scope:\" ) ; winpr_HexDump ( TAG , WLOG_DEBUG , Stream_Pointer ( licenseStream ) , cbScope ) ; # endif Stream_Seek ( licenseStream , cbScope ) ; <S2SV_StartBug> Stream_Read_UINT32 ( licenseStream , cbCompanyName ) ; <S2SV_EndBug> if ( Stream_GetRemainingLength ( licenseStream ) < cbCompanyName ) goto out_free_stream ; # ifdef WITH_DEBUG_LICENSE WLog_DBG ( TAG , \"Company<S2SV_blank>name:\" ) ; winpr_HexDump ( TAG , WLOG_DEBUG , Stream_Pointer ( licenseStream ) , cbCompanyName ) ; # endif Stream_Seek ( licenseStream , cbCompanyName ) ; <S2SV_StartBug> Stream_Read_UINT32 ( licenseStream , cbProductId ) ; <S2SV_EndBug> if ( Stream_GetRemainingLength ( licenseStream ) < cbProductId ) goto out_free_stream ; # ifdef WITH_DEBUG_LICENSE WLog_DBG ( TAG , \"Product<S2SV_blank>id:\" ) ; winpr_HexDump ( TAG , WLOG_DEBUG , Stream_Pointer ( licenseStream ) , cbProductId ) ; # endif Stream_Seek ( licenseStream , cbProductId ) ; <S2SV_StartBug> Stream_Read_UINT32 ( licenseStream , cbLicenseInfo ) ; <S2SV_EndBug> if ( Stream_GetRemainingLength ( licenseStream ) < cbLicenseInfo ) goto out_free_stream ; license -> state = LICENSE_STATE_COMPLETED ; ret = TRUE ; if ( ! license -> rdp -> settings -> OldLicenseBehaviour ) ret = saveCal ( license -> rdp -> settings , Stream_Pointer ( licenseStream ) , cbLicenseInfo , license -> rdp -> settings -> ClientHostname ) ; out_free_stream : Stream_Free ( licenseStream , FALSE ) ; out_free_blob : license_free_binary_blob ( calBlob ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out_free_blob ; if ( Stream_GetRemainingLength ( licenseStream ) < 8 ) goto out_free_stream ; <S2SV_ModStart> cbScope ) ; if ( Stream_GetRemainingLength ( licenseStream ) < 4 ) goto out_free_stream ; <S2SV_ModStart> cbCompanyName ) ; if ( Stream_GetRemainingLength ( licenseStream ) < 4 ) goto out_free_stream ; <S2SV_ModStart> cbProductId ) ; if ( Stream_GetRemainingLength ( licenseStream ) < 4 ) goto out_free_stream ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int orangefs_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { struct orangefs_inode_s * orangefs_inode = ORANGEFS_I ( inode ) ; int error = 0 ; void * value = NULL ; size_t size = 0 ; const char * name = NULL ; switch ( type ) { case ACL_TYPE_ACCESS : name = XATTR_NAME_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> umode_t mode = inode -> i_mode ; <S2SV_EndBug> <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> if ( error < 0 ) { <S2SV_StartBug> gossip_err ( \"%s:<S2SV_blank>posix_acl_equiv_mode<S2SV_blank>err:<S2SV_blank>%d\\\\n\" , <S2SV_EndBug> __func__ , error ) ; return error ; } if ( inode -> i_mode != mode ) SetModeFlag ( orangefs_inode ) ; inode -> i_mode = mode ; mark_inode_dirty_sync ( inode ) ; <S2SV_StartBug> if ( error == 0 ) <S2SV_EndBug> acl = NULL ; } break ; case ACL_TYPE_DEFAULT : name = XATTR_NAME_POSIX_ACL_DEFAULT ; break ; default : gossip_err ( \"%s:<S2SV_blank>invalid<S2SV_blank>type<S2SV_blank>%d!\\\\n\" , __func__ , type ) ; return - EINVAL ; } gossip_debug ( GOSSIP_ACL_DEBUG , \"%s:<S2SV_blank>inode<S2SV_blank>%pU,<S2SV_blank>key<S2SV_blank>%s<S2SV_blank>type<S2SV_blank>%d\\\\n\" , __func__ , get_khandle_from_ino ( inode ) , name , type ) ; if ( acl ) { size = posix_acl_xattr_size ( acl -> a_count ) ; value = kmalloc ( size , GFP_KERNEL ) ; if ( ! value ) return - ENOMEM ; error = posix_acl_to_xattr ( & init_user_ns , acl , value , size ) ; if ( error < 0 ) goto out ; } gossip_debug ( GOSSIP_ACL_DEBUG , \"%s:<S2SV_blank>name<S2SV_blank>%s,<S2SV_blank>value<S2SV_blank>%p,<S2SV_blank>size<S2SV_blank>%zd,<S2SV_blank>acl<S2SV_blank>%p\\\\n\" , __func__ , name , value , size , acl ) ; error = orangefs_inode_setxattr ( inode , name , value , size , 0 ) ; out : kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { umode_t mode ; error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & mode <S2SV_ModStart> , & mode , & acl ) ; if ( error <S2SV_ModEnd> ) { gossip_err <S2SV_ModStart> { gossip_err ( \"%s:<S2SV_blank>posix_acl_update_mode<S2SV_blank>err:<S2SV_blank>%d\\\\n\" <S2SV_ModEnd> , __func__ , <S2SV_ModStart> inode ) ; <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11068\n\n```\nCWE-120 SecureElementStatus_t SecureElementProcessJoinAccept ( JoinReqIdentifier_t joinReqType , uint8_t * joinEui , uint16_t devNonce , uint8_t * encJoinAccept , uint8_t encJoinAcceptSize , uint8_t * decJoinAccept , uint8_t * versionMinor ) { SecureElementStatus_t status = SECURE_ELEMENT_ERROR ; if ( ( encJoinAccept == NULL ) || ( decJoinAccept == NULL ) || ( versionMinor == NULL ) ) { <S2SV_StartBug> return SECURE_ELEMENT_ERROR_NPE ; <S2SV_EndBug> } KeyIdentifier_t encKeyID = NWK_KEY ; if ( joinReqType != JOIN_REQ ) { encKeyID = J_S_ENC_KEY ; } uint8_t micHeader10 [ 1 ] = { 0x20 } ; lr1110_crypto_process_join_accept ( & LR1110 , ( lr1110_crypto_status_t * ) & status , convert_key_id_from_se_to_lr1110 ( encKeyID ) , convert_key_id_from_se_to_lr1110 ( NWK_KEY ) , ( lr1110_crypto_lorawan_version_t ) 0 , micHeader10 , encJoinAccept + 1 , encJoinAcceptSize - 1 , decJoinAccept + 1 ) ; if ( status == SECURE_ELEMENT_SUCCESS ) { * versionMinor = ( ( decJoinAccept [ 11 ] & 0x80 ) == 0x80 ) ? 1 : 0 ; if ( * versionMinor == 0 ) { return SECURE_ELEMENT_SUCCESS ; } } # if ( USE_LRWAN_1_1_X_CRYPTO == 1 ) uint8_t micHeader11 [ JOIN_ACCEPT_MIC_COMPUTATION_OFFSET ] = { 0 } ; uint16_t bufItr = 0 ; micHeader11 [ bufItr ++ ] = ( uint8_t ) joinReqType ; memcpyr ( micHeader11 + bufItr , joinEui , LORAMAC_JOIN_EUI_FIELD_SIZE ) ; bufItr += LORAMAC_JOIN_EUI_FIELD_SIZE ; micHeader11 [ bufItr ++ ] = devNonce & 0xFF ; micHeader11 [ bufItr ++ ] = ( devNonce >> 8 ) & 0xFF ; micHeader11 [ bufItr ++ ] = 0x20 ; lr1110_crypto_process_join_accept ( & LR1110 , ( lr1110_crypto_status_t * ) & status , convert_key_id_from_se_to_lr1110 ( encKeyID ) , convert_key_id_from_se_to_lr1110 ( J_S_INT_KEY ) , ( lr1110_crypto_lorawan_version_t ) 1 , micHeader11 , encJoinAccept + 1 , encJoinAcceptSize - 1 , decJoinAccept + 1 ) ; if ( status == SECURE_ELEMENT_SUCCESS ) { * versionMinor = ( ( decJoinAccept [ 11 ] & 0x80 ) == 0x80 ) ? 1 : 0 ; if ( * versionMinor == 1 ) { return SECURE_ELEMENT_SUCCESS ; } } # endif return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { return SECURE_ELEMENT_ERROR_NPE ; } if ( encJoinAcceptSize > LORAMAC_JOIN_ACCEPT_FRAME_MAX_SIZE ) { return SECURE_ELEMENT_ERROR_BUF_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 void __sock_recv_timestamp ( struct msghdr * msg , struct sock * sk , struct sk_buff * skb ) { int need_software_tstamp = sock_flag ( sk , SOCK_RCVTSTAMP ) ; struct scm_timestamping tss ; int empty = 1 ; struct skb_shared_hwtstamps * shhwtstamps = skb_hwtstamps ( skb ) ; if ( need_software_tstamp && skb -> tstamp == 0 ) __net_timestamp ( skb ) ; if ( need_software_tstamp ) { if ( ! sock_flag ( sk , SOCK_RCVTSTAMPNS ) ) { struct timeval tv ; skb_get_timestamp ( skb , & tv ) ; put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMP , sizeof ( tv ) , & tv ) ; } else { struct timespec ts ; skb_get_timestampns ( skb , & ts ) ; put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPNS , sizeof ( ts ) , & ts ) ; } } memset ( & tss , 0 , sizeof ( tss ) ) ; if ( ( sk -> sk_tsflags & SOF_TIMESTAMPING_SOFTWARE ) && ktime_to_timespec_cond ( skb -> tstamp , tss . ts + 0 ) ) empty = 0 ; if ( shhwtstamps && ( sk -> sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE ) && ktime_to_timespec_cond ( shhwtstamps -> hwtstamp , tss . ts + 2 ) ) empty = 0 ; if ( ! empty ) { put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPING , sizeof ( tss ) , & tss ) ; <S2SV_StartBug> if ( skb -> len && ( sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_STATS ) ) <S2SV_EndBug> put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPING_OPT_STATS , skb -> len , skb -> data ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( skb_is_err_queue ( skb ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1792\n\n```\nCWE-399 static void do_free_upto ( BIO * f , BIO * upto ) { if ( upto ) { BIO * tbio ; do { tbio = BIO_pop ( f ) ; BIO_free ( f ) ; f = tbio ; } <S2SV_StartBug> while ( f != upto ) ; <S2SV_EndBug> } else BIO_free_all ( f ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( f && f\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2669\n\n```\nCWE-20 int main ( void ) { int fd , len , sock_opt ; int error ; struct cn_msg * message ; struct pollfd pfd ; struct nlmsghdr * incoming_msg ; struct cn_msg * incoming_cn_msg ; struct hv_kvp_msg * hv_msg ; char * p ; char * key_value ; char * key_name ; daemon ( 1 , 0 ) ; openlog ( \"KVP\" , 0 , LOG_USER ) ; syslog ( LOG_INFO , \"KVP<S2SV_blank>starting;<S2SV_blank>pid<S2SV_blank>is:%d\" , getpid ( ) ) ; kvp_get_os_info ( ) ; if ( kvp_file_init ( ) ) { syslog ( LOG_ERR , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>the<S2SV_blank>pools\" ) ; exit ( - 1 ) ; } fd = socket ( AF_NETLINK , SOCK_DGRAM , NETLINK_CONNECTOR ) ; if ( fd < 0 ) { syslog ( LOG_ERR , \"netlink<S2SV_blank>socket<S2SV_blank>creation<S2SV_blank>failed;<S2SV_blank>error:%d\" , fd ) ; exit ( - 1 ) ; } addr . nl_family = AF_NETLINK ; addr . nl_pad = 0 ; addr . nl_pid = 0 ; addr . nl_groups = CN_KVP_IDX ; error = bind ( fd , ( struct sockaddr * ) & addr , sizeof ( addr ) ) ; if ( error < 0 ) { syslog ( LOG_ERR , \"bind<S2SV_blank>failed;<S2SV_blank>error:%d\" , error ) ; close ( fd ) ; exit ( - 1 ) ; } sock_opt = addr . nl_groups ; setsockopt ( fd , 270 , 1 , & sock_opt , sizeof ( sock_opt ) ) ; message = ( struct cn_msg * ) kvp_send_buffer ; message -> id . idx = CN_KVP_IDX ; message -> id . val = CN_KVP_VAL ; hv_msg = ( struct hv_kvp_msg * ) message -> data ; hv_msg -> kvp_hdr . operation = KVP_OP_REGISTER ; message -> ack = 0 ; message -> len = sizeof ( struct hv_kvp_msg ) ; len = netlink_send ( fd , message ) ; if ( len < 0 ) { syslog ( LOG_ERR , \"netlink_send<S2SV_blank>failed;<S2SV_blank>error:%d\" , len ) ; close ( fd ) ; exit ( - 1 ) ; } pfd . fd = fd ; while ( 1 ) { <S2SV_StartBug> pfd . events = POLLIN ; <S2SV_EndBug> pfd . revents = 0 ; poll ( & pfd , 1 , - 1 ) ; <S2SV_StartBug> len = recv ( fd , kvp_recv_buffer , sizeof ( kvp_recv_buffer ) , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( len < 0 ) { <S2SV_EndBug> <S2SV_StartBug> syslog ( LOG_ERR , \"recv<S2SV_blank>failed;<S2SV_blank>error:%d\" , len ) ; <S2SV_EndBug> close ( fd ) ; return - 1 ; } incoming_msg = ( struct nlmsghdr * ) kvp_recv_buffer ; incoming_cn_msg = ( struct cn_msg * ) NLMSG_DATA ( incoming_msg ) ; hv_msg = ( struct hv_kvp_msg * ) incoming_cn_msg -> data ; switch ( hv_msg -> kvp_hdr . operation ) { case KVP_OP_REGISTER : p = ( char * ) hv_msg -> body . kvp_register . version ; lic_version = malloc ( strlen ( p ) + 1 ) ; if ( lic_version ) { strcpy ( lic_version , p ) ; syslog ( LOG_INFO , \"KVP<S2SV_blank>LIC<S2SV_blank>Version:<S2SV_blank>%s\" , lic_version ) ; } else { syslog ( LOG_ERR , \"malloc<S2SV_blank>failed\" ) ; } continue ; case KVP_OP_SET : if ( kvp_key_add_or_modify ( hv_msg -> kvp_hdr . pool , hv_msg -> body . kvp_set . data . key , hv_msg -> body . kvp_set . data . key_size , hv_msg -> body . kvp_set . data . value , hv_msg -> body . kvp_set . data . value_size ) ) strcpy ( hv_msg -> body . kvp_set . data . key , \"\" ) ; break ; case KVP_OP_GET : if ( kvp_get_value ( hv_msg -> kvp_hdr . pool , hv_msg -> body . kvp_set . data . key , hv_msg -> body . kvp_set . data . key_size , hv_msg -> body . kvp_set . data . value , hv_msg -> body . kvp_set . data . value_size ) ) strcpy ( hv_msg -> body . kvp_set . data . key , \"\" ) ; break ; case KVP_OP_DELETE : if ( kvp_key_delete ( hv_msg -> kvp_hdr . pool , hv_msg -> body . kvp_delete . key , hv_msg -> body . kvp_delete . key_size ) ) strcpy ( hv_msg -> body . kvp_delete . key , \"\" ) ; break ; default : break ; } if ( hv_msg -> kvp_hdr . operation != KVP_OP_ENUMERATE ) goto kvp_done ; if ( hv_msg -> kvp_hdr . pool != KVP_POOL_AUTO ) { kvp_pool_enumerate ( hv_msg -> kvp_hdr . pool , hv_msg -> body . kvp_enum_data . index , hv_msg -> body . kvp_enum_data . data . key , HV_KVP_EXCHANGE_MAX_KEY_SIZE , hv_msg -> body . kvp_enum_data . data . value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; goto kvp_done ; } hv_msg = ( struct hv_kvp_msg * ) incoming_cn_msg -> data ; key_name = ( char * ) hv_msg -> body . kvp_enum_data . data . key ; key_value = ( char * ) hv_msg -> body . kvp_enum_data . data . value ; switch ( hv_msg -> body . kvp_enum_data . index ) { case FullyQualifiedDomainName : kvp_get_domain_name ( key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"FullyQualifiedDomainName\" ) ; break ; case IntegrationServicesVersion : strcpy ( key_name , \"IntegrationServicesVersion\" ) ; strcpy ( key_value , lic_version ) ; break ; case NetworkAddressIPv4 : kvp_get_ip_address ( AF_INET , key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"NetworkAddressIPv4\" ) ; break ; case NetworkAddressIPv6 : kvp_get_ip_address ( AF_INET6 , key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"NetworkAddressIPv6\" ) ; break ; case OSBuildNumber : strcpy ( key_value , os_build ) ; strcpy ( key_name , \"OSBuildNumber\" ) ; break ; case OSName : strcpy ( key_value , os_name ) ; strcpy ( key_name , \"OSName\" ) ; break ; case OSMajorVersion : strcpy ( key_value , os_major ) ; strcpy ( key_name , \"OSMajorVersion\" ) ; break ; case OSMinorVersion : strcpy ( key_value , os_minor ) ; strcpy ( key_name , \"OSMinorVersion\" ) ; break ; case OSVersion : strcpy ( key_value , os_build ) ; strcpy ( key_name , \"OSVersion\" ) ; break ; case ProcessorArchitecture : strcpy ( key_value , processor_arch ) ; strcpy ( key_name , \"ProcessorArchitecture\" ) ; break ; default : strcpy ( key_value , \"Unknown<S2SV_blank>Key\" ) ; strcpy ( key_name , \"\" ) ; break ; } kvp_done : incoming_cn_msg -> id . idx = CN_KVP_IDX ; incoming_cn_msg -> id . val = CN_KVP_VAL ; incoming_cn_msg -> ack = 0 ; incoming_cn_msg -> len = sizeof ( struct hv_kvp_msg ) ; len = netlink_send ( fd , incoming_cn_msg ) ; if ( len < 0 ) { syslog ( LOG_ERR , \"net_link<S2SV_blank>send<S2SV_blank>failed;<S2SV_blank>error:%d\" , len ) ; exit ( - 1 ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) { struct sockaddr * addr_p = ( struct sockaddr * ) & addr ; socklen_t addr_l = sizeof ( addr ) ; <S2SV_ModStart> ; len = recvfrom <S2SV_ModEnd> ( fd , <S2SV_ModStart> ) , 0 , addr_p , & addr_l <S2SV_ModStart> len < 0 || addr . nl_pid <S2SV_ModStart> ( LOG_ERR , \"recvfrom<S2SV_blank>failed;<S2SV_blank>pid:%u<S2SV_blank>error:%d<S2SV_blank>%s\" , addr . nl_pid , errno , strerror ( errno ) <S2SV_ModEnd> ) ; close\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 static void init_once ( void * foo ) { struct ext4_inode_info * ei = ( struct ext4_inode_info * ) foo ; INIT_LIST_HEAD ( & ei -> i_orphan ) ; init_rwsem ( & ei -> xattr_sem ) ; init_rwsem ( & ei -> i_data_sem ) ; <S2SV_StartBug> inode_init_once ( & ei -> vfs_inode ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i_data_sem ) ; init_rwsem ( & ei -> i_mmap_sem ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8dx_get_raw_frame ( VP8D_COMP * pbi , YV12_BUFFER_CONFIG * sd , int64_t * time_stamp , int64_t * time_end_stamp , vp8_ppflags_t * flags ) { int ret = - 1 ; if ( pbi -> ready_for_new_data == 1 ) return ret ; if ( pbi -> common . show_frame == 0 ) return ret ; pbi -> ready_for_new_data = 1 ; * time_stamp = pbi -> last_time_stamp ; * time_end_stamp = 0 ; # if CONFIG_POSTPROC ret = vp8_post_proc_frame ( & pbi -> common , sd , flags ) ; # else <S2SV_StartBug> if ( pbi -> common . frame_to_show ) <S2SV_EndBug> { * sd = * pbi -> common . frame_to_show ; sd -> y_width = pbi -> common . Width ; sd -> y_height = pbi -> common . Height ; sd -> uv_height = pbi -> common . Height / 2 ; ret = 0 ; } else { ret = - 1 ; } # endif vp8_clear_system_state ( ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # else ( void ) flags ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7528\n\n```\nCWE-125 static Image * ReadVIFFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define VFF_CM_genericRGB 15 # define VFF_CM_ntscRGB 1 # define VFF_CM_NONE 0 # define VFF_DEP_DECORDER 0x4 # define VFF_DEP_NSORDER 0x8 # define VFF_DES_RAW 0 # define VFF_LOC_IMPLICIT 1 # define VFF_MAPTYP_NONE 0 # define VFF_MAPTYP_1_BYTE 1 # define VFF_MAPTYP_2_BYTE 2 # define VFF_MAPTYP_4_BYTE 4 # define VFF_MAPTYP_FLOAT 5 # define VFF_MAPTYP_DOUBLE 7 # define VFF_MS_NONE 0 # define VFF_MS_ONEPERBAND 1 # define VFF_MS_SHARED 3 # define VFF_TYP_BIT 0 # define VFF_TYP_1_BYTE 1 # define VFF_TYP_2_BYTE 2 # define VFF_TYP_4_BYTE 4 # define VFF_TYP_FLOAT 5 # define VFF_TYP_DOUBLE 9 typedef struct _ViffInfo { unsigned char identifier , file_type , release , version , machine_dependency , reserve [ 3 ] ; char comment [ 512 ] ; unsigned int rows , columns , subrows ; int x_offset , y_offset ; float x_bits_per_pixel , y_bits_per_pixel ; unsigned int location_type , location_dimension , number_of_images , number_data_bands , data_storage_type , data_encode_scheme , map_scheme , map_storage_type , map_rows , map_columns , map_subrows , map_enable , maps_per_cycle , color_space_model ; } ViffInfo ; double min_value , scale_factor , value ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bytes_per_pixel , max_packets , quantum ; ssize_t count , y ; unsigned char * pixels ; unsigned long lsb_first ; ViffInfo viff_info ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 1 , & viff_info . identifier ) ; do { if ( ( count != 1 ) || ( ( unsigned char ) viff_info . identifier != 0xab ) ) ThrowReaderException ( CorruptImageError , \"NotAVIFFImage\" ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . file_type ) , & viff_info . file_type ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . release ) , & viff_info . release ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . version ) , & viff_info . version ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . machine_dependency ) , & viff_info . machine_dependency ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . reserve ) , viff_info . reserve ) ; count = ReadBlob ( image , 512 , ( unsigned char * ) viff_info . comment ) ; viff_info . comment [ 511 ] = '\\\\0' ; if ( strlen ( viff_info . comment ) > 4 ) ( void ) SetImageProperty ( image , \"comment\" , viff_info . comment , exception ) ; if ( ( viff_info . machine_dependency == VFF_DEP_DECORDER ) || ( viff_info . machine_dependency == VFF_DEP_NSORDER ) ) image -> endian = LSBEndian ; else image -> endian = MSBEndian ; viff_info . rows = ReadBlobLong ( image ) ; viff_info . columns = ReadBlobLong ( image ) ; viff_info . subrows = ReadBlobLong ( image ) ; viff_info . x_offset = ( int ) ReadBlobLong ( image ) ; viff_info . y_offset = ( int ) ReadBlobLong ( image ) ; viff_info . x_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . y_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . location_type = ReadBlobLong ( image ) ; viff_info . location_dimension = ReadBlobLong ( image ) ; viff_info . number_of_images = ReadBlobLong ( image ) ; viff_info . number_data_bands = ReadBlobLong ( image ) ; viff_info . data_storage_type = ReadBlobLong ( image ) ; viff_info . data_encode_scheme = ReadBlobLong ( image ) ; viff_info . map_scheme = ReadBlobLong ( image ) ; viff_info . map_storage_type = ReadBlobLong ( image ) ; viff_info . map_rows = ReadBlobLong ( image ) ; viff_info . map_columns = ReadBlobLong ( image ) ; viff_info . map_subrows = ReadBlobLong ( image ) ; viff_info . map_enable = ReadBlobLong ( image ) ; viff_info . maps_per_cycle = ReadBlobLong ( image ) ; viff_info . color_space_model = ReadBlobLong ( image ) ; for ( i = 0 ; i < 420 ; i ++ ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; image -> depth = viff_info . x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH ; number_pixels = ( MagickSizeType ) viff_info . columns * viff_info . rows ; if ( number_pixels != ( size_t ) number_pixels ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( number_pixels == 0 ) ThrowReaderException ( CoderError , \"ImageColumnOrRowSizeIsNotSupported\" ) ; if ( ( viff_info . number_data_bands < 1 ) || ( viff_info . number_data_bands > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( viff_info . data_storage_type != VFF_TYP_BIT ) && ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_2_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_4_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_FLOAT ) && ( viff_info . data_storage_type != VFF_TYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"DataStorageTypeIsNotSupported\" ) ; if ( viff_info . data_encode_scheme != VFF_DES_RAW ) ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; if ( ( viff_info . map_storage_type != VFF_MAPTYP_NONE ) && ( viff_info . map_storage_type != VFF_MAPTYP_1_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_2_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_4_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_FLOAT ) && ( viff_info . map_storage_type != VFF_MAPTYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"MapStorageTypeIsNotSupported\" ) ; if ( ( viff_info . color_space_model != VFF_CM_NONE ) && ( viff_info . color_space_model != VFF_CM_ntscRGB ) && ( viff_info . color_space_model != VFF_CM_genericRGB ) ) ThrowReaderException ( CoderError , \"ColorspaceModelIsNotSupported\" ) ; if ( viff_info . location_type != VFF_LOC_IMPLICIT ) ThrowReaderException ( CoderError , \"LocationTypeIsNotSupported\" ) ; if ( viff_info . number_of_images != 1 ) ThrowReaderException ( CoderError , \"NumberOfImagesIsNotSupported\" ) ; if ( viff_info . map_rows == 0 ) viff_info . map_scheme = VFF_MS_NONE ; switch ( ( int ) viff_info . map_scheme ) { case VFF_MS_NONE : { if ( viff_info . number_data_bands < 3 ) { if ( viff_info . data_storage_type == VFF_TYP_BIT ) image -> colors = 2 ; else if ( viff_info . data_storage_type == VFF_MAPTYP_1_BYTE ) image -> colors = 256UL ; else image -> colors = image -> depth <= 8 ? 256UL : 65536UL ; status = AcquireImageColormap ( image , image -> colors , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case VFF_MS_ONEPERBAND : case VFF_MS_SHARED : { unsigned char * viff_colormap ; switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_1_BYTE : bytes_per_pixel = 1 ; break ; case VFF_MAPTYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_MAPTYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } image -> colors = viff_info . map_columns ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( viff_info . map_rows > ( viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ; if ( viff_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , bytes_per_pixel * image -> colors * viff_info . map_rows , viff_colormap ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : { MSBOrderShort ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } case VFF_MAPTYP_4_BYTE : case VFF_MAPTYP_FLOAT : { MSBOrderLong ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } default : break ; } for ( i = 0 ; i < ( ssize_t ) ( viff_info . map_rows * image -> colors ) ; i ++ ) { switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : value = 1.0 * ( ( short * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_4_BYTE : value = 1.0 * ( ( int * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_FLOAT : value = ( ( float * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_DOUBLE : value = ( ( double * ) viff_colormap ) [ i ] ; break ; default : value = 1.0 * viff_colormap [ i ] ; break ; } if ( i < ( ssize_t ) image -> colors ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } else if ( i < ( ssize_t ) ( 2 * image -> colors ) ) image -> colormap [ i % image -> colors ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; else if ( i < ( ssize_t ) ( 3 * image -> colors ) ) image -> colormap [ i % image -> colors ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } viff_colormap = ( unsigned char * ) RelinquishMagickMemory ( viff_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = viff_info . number_data_bands == 4 ? BlendPixelTrait : UndefinedPixelTrait ; image -> storage_class = ( viff_info . number_data_bands < 3 ? PseudoClass : DirectClass ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_TYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_TYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_TYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } if ( viff_info . data_storage_type == VFF_TYP_BIT ) max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; else max_packets = ( size_t ) ( number_pixels * viff_info . number_data_bands ) ; <S2SV_StartBug> pixels = ( unsigned char * ) AcquireQuantumMemory ( max_packets , <S2SV_EndBug> bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , bytes_per_pixel * max_packets , pixels ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : { MSBOrderShort ( pixels , bytes_per_pixel * max_packets ) ; break ; } case VFF_TYP_4_BYTE : case VFF_TYP_FLOAT : { MSBOrderLong ( pixels , bytes_per_pixel * max_packets ) ; break ; } default : break ; } min_value = 0.0 ; scale_factor = 1.0 ; if ( ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . map_scheme == VFF_MS_NONE ) ) { double max_value ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ 0 ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ 0 ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ 0 ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ 0 ] ; break ; default : value = 1.0 * pixels [ 0 ] ; break ; } max_value = value ; min_value = value ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( value > max_value ) max_value = value ; else if ( value < min_value ) min_value = value ; } if ( ( min_value == 0 ) && ( max_value == 0 ) ) scale_factor = 0 ; else if ( min_value == max_value ) { scale_factor = ( double ) QuantumRange / min_value ; min_value = 0 ; } else scale_factor = ( double ) QuantumRange / ( max_value - min_value ) ; } p = ( unsigned char * ) pixels ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( viff_info . map_scheme == VFF_MS_NONE ) { value = ( value - min_value ) * scale_factor ; if ( value > QuantumRange ) value = QuantumRange ; else if ( value < 0 ) value = 0 ; } * p = ( unsigned char ) ( ( Quantum ) value ) ; p ++ ; } p = ( unsigned char * ) pixels ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) ( image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( int ) ( image -> columns % 8 ) ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else if ( image -> storage_class == PseudoClass ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else { number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + number_pixels ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 * number_pixels ) ) , q ) ; if ( image -> colors != 0 ) { ssize_t index ; index = ( ssize_t ) GetPixelRed ( image , q ) ; SetPixelRed ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . red , q ) ; index = ( ssize_t ) GetPixelGreen ( image , q ) ; SetPixelGreen ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . green , q ) ; index = ( ssize_t ) GetPixelBlue ( image , q ) ; SetPixelBlue ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . blue , q ) ; } SetPixelAlpha ( image , image -> alpha_trait != UndefinedPixelTrait ? ScaleCharToQuantum ( * ( p + number_pixels * 3 ) ) : OpaqueAlpha , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; count = ReadBlob ( image , 1 , & viff_info . identifier ) ; if ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) AcquireQuantumMemory ( MagickMax ( number_pixels , max_packets ) , <S2SV_ModEnd> bytes_per_pixel * sizeof\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 int do_mathemu ( struct pt_regs * regs , struct fpustate * f ) { unsigned long pc = regs -> tpc ; unsigned long tstate = regs -> tstate ; u32 insn = 0 ; int type = 0 ; # define TYPE ( ftt , r , ru , b , bu , a , au ) type = ( au << 2 ) | ( a << 0 ) | ( bu << 5 ) | ( b << 3 ) | ( ru << 8 ) | ( r << 6 ) | ( ftt << 9 ) int freg ; static u64 zero [ 2 ] = { 0L , 0L } ; int flags ; FP_DECL_EX ; FP_DECL_S ( SA ) ; FP_DECL_S ( SB ) ; FP_DECL_S ( SR ) ; FP_DECL_D ( DA ) ; FP_DECL_D ( DB ) ; FP_DECL_D ( DR ) ; FP_DECL_Q ( QA ) ; FP_DECL_Q ( QB ) ; FP_DECL_Q ( QR ) ; int IR ; long XR , xfsr ; if ( tstate & TSTATE_PRIV ) die_if_kernel ( \"unfinished/unimplemented<S2SV_blank>FPop<S2SV_blank>from<S2SV_blank>kernel\" , regs ) ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , 0 ) ; <S2SV_EndBug> if ( test_thread_flag ( TIF_32BIT ) ) pc = ( u32 ) pc ; if ( get_user ( insn , ( u32 __user * ) pc ) != - EFAULT ) { if ( ( insn & 0xc1f80000 ) == 0x81a00000 ) { switch ( ( insn >> 5 ) & 0x1ff ) { case FMOVQ : case FNEGQ : case FABSQ : TYPE ( 3 , 3 , 0 , 3 , 0 , 0 , 0 ) ; break ; case FSQRTQ : TYPE ( 3 , 3 , 1 , 3 , 1 , 0 , 0 ) ; break ; case FADDQ : case FSUBQ : case FMULQ : case FDIVQ : TYPE ( 3 , 3 , 1 , 3 , 1 , 3 , 1 ) ; break ; case FDMULQ : TYPE ( 3 , 3 , 1 , 2 , 1 , 2 , 1 ) ; break ; case FQTOX : TYPE ( 3 , 2 , 0 , 3 , 1 , 0 , 0 ) ; break ; case FXTOQ : TYPE ( 3 , 3 , 1 , 2 , 0 , 0 , 0 ) ; break ; case FQTOS : TYPE ( 3 , 1 , 1 , 3 , 1 , 0 , 0 ) ; break ; case FQTOD : TYPE ( 3 , 2 , 1 , 3 , 1 , 0 , 0 ) ; break ; case FITOQ : TYPE ( 3 , 3 , 1 , 1 , 0 , 0 , 0 ) ; break ; case FSTOQ : TYPE ( 3 , 3 , 1 , 1 , 1 , 0 , 0 ) ; break ; case FDTOQ : TYPE ( 3 , 3 , 1 , 2 , 1 , 0 , 0 ) ; break ; case FQTOI : TYPE ( 3 , 1 , 0 , 3 , 1 , 0 , 0 ) ; break ; case FSQRTS : { unsigned long x = current_thread_info ( ) -> xfsr [ 0 ] ; x = ( x >> 14 ) & 0xf ; TYPE ( x , 1 , 1 , 1 , 1 , 0 , 0 ) ; break ; } case FSQRTD : { unsigned long x = current_thread_info ( ) -> xfsr [ 0 ] ; x = ( x >> 14 ) & 0xf ; TYPE ( x , 2 , 1 , 2 , 1 , 0 , 0 ) ; break ; } case FADDD : case FSUBD : case FMULD : case FDIVD : TYPE ( 2 , 2 , 1 , 2 , 1 , 2 , 1 ) ; break ; case FADDS : case FSUBS : case FMULS : case FDIVS : TYPE ( 2 , 1 , 1 , 1 , 1 , 1 , 1 ) ; break ; case FSMULD : TYPE ( 2 , 2 , 1 , 1 , 1 , 1 , 1 ) ; break ; case FSTOX : TYPE ( 2 , 2 , 0 , 1 , 1 , 0 , 0 ) ; break ; case FDTOX : TYPE ( 2 , 2 , 0 , 2 , 1 , 0 , 0 ) ; break ; case FDTOS : TYPE ( 2 , 1 , 1 , 2 , 1 , 0 , 0 ) ; break ; case FSTOD : TYPE ( 2 , 2 , 1 , 1 , 1 , 0 , 0 ) ; break ; case FSTOI : TYPE ( 2 , 1 , 0 , 1 , 1 , 0 , 0 ) ; break ; case FDTOI : TYPE ( 2 , 1 , 0 , 2 , 1 , 0 , 0 ) ; break ; case FXTOS : TYPE ( 2 , 1 , 1 , 2 , 0 , 0 , 0 ) ; break ; case FXTOD : TYPE ( 2 , 2 , 1 , 2 , 0 , 0 , 0 ) ; break ; # if 0 case FITOS : TYPE ( 2 , 1 , 1 , 1 , 0 , 0 , 0 ) ; break ; # endif case FITOD : TYPE ( 2 , 2 , 1 , 1 , 0 , 0 , 0 ) ; break ; } } else if ( ( insn & 0xc1f80000 ) == 0x81a80000 ) { IR = 2 ; switch ( ( insn >> 5 ) & 0x1ff ) { case FCMPQ : TYPE ( 3 , 0 , 0 , 3 , 1 , 3 , 1 ) ; break ; case FCMPEQ : TYPE ( 3 , 0 , 0 , 3 , 1 , 3 , 1 ) ; break ; case FMOVQ0 : case FMOVQ1 : case FMOVQ2 : case FMOVQ3 : if ( ! ( ( insn >> 11 ) & 3 ) ) XR = current_thread_info ( ) -> xfsr [ 0 ] >> 10 ; else XR = current_thread_info ( ) -> xfsr [ 0 ] >> ( 30 + ( ( insn >> 10 ) & 0x6 ) ) ; XR &= 3 ; IR = 0 ; switch ( ( insn >> 14 ) & 0x7 ) { case 1 : if ( XR ) IR = 1 ; break ; case 2 : if ( XR == 1 || XR == 2 ) IR = 1 ; break ; case 3 : if ( XR & 1 ) IR = 1 ; break ; case 4 : if ( XR == 1 ) IR = 1 ; break ; case 5 : if ( XR & 2 ) IR = 1 ; break ; case 6 : if ( XR == 2 ) IR = 1 ; break ; case 7 : if ( XR == 3 ) IR = 1 ; break ; } if ( ( insn >> 14 ) & 8 ) IR ^= 1 ; break ; case FMOVQI : case FMOVQX : XR = regs -> tstate >> 32 ; if ( ( insn >> 5 ) & 0x80 ) XR >>= 4 ; XR &= 0xf ; IR = 0 ; freg = ( ( XR >> 2 ) ^ XR ) & 2 ; switch ( ( insn >> 14 ) & 0x7 ) { case 1 : if ( XR & 4 ) IR = 1 ; break ; case 2 : if ( ( XR & 4 ) || freg ) IR = 1 ; break ; case 3 : if ( freg ) IR = 1 ; break ; case 4 : if ( XR & 5 ) IR = 1 ; break ; case 5 : if ( XR & 1 ) IR = 1 ; break ; case 6 : if ( XR & 8 ) IR = 1 ; break ; case 7 : if ( XR & 2 ) IR = 1 ; break ; } if ( ( insn >> 14 ) & 8 ) IR ^= 1 ; break ; case FMOVQZ : case FMOVQLE : case FMOVQLZ : case FMOVQNZ : case FMOVQGZ : case FMOVQGE : freg = ( insn >> 14 ) & 0x1f ; if ( ! freg ) XR = 0 ; else if ( freg < 16 ) XR = regs -> u_regs [ freg ] ; else if ( test_thread_flag ( TIF_32BIT ) ) { struct reg_window32 __user * win32 ; flushw_user ( ) ; win32 = ( struct reg_window32 __user * ) ( ( unsigned long ) ( ( u32 ) regs -> u_regs [ UREG_FP ] ) ) ; get_user ( XR , & win32 -> locals [ freg - 16 ] ) ; } else { struct reg_window __user * win ; flushw_user ( ) ; win = ( struct reg_window __user * ) ( regs -> u_regs [ UREG_FP ] + STACK_BIAS ) ; get_user ( XR , & win -> locals [ freg - 16 ] ) ; } IR = 0 ; switch ( ( insn >> 10 ) & 3 ) { case 1 : if ( ! XR ) IR = 1 ; break ; case 2 : if ( XR <= 0 ) IR = 1 ; break ; case 3 : if ( XR < 0 ) IR = 1 ; break ; } if ( ( insn >> 10 ) & 4 ) IR ^= 1 ; break ; } if ( IR == 0 ) { current_thread_info ( ) -> xfsr [ 0 ] &= ~ ( FSR_CEXC_MASK ) ; regs -> tpc = regs -> tnpc ; regs -> tnpc += 4 ; return 1 ; } else if ( IR == 1 ) { insn = ( insn & 0x3e00001f ) | 0x81a00060 ; TYPE ( 3 , 3 , 0 , 3 , 0 , 0 , 0 ) ; } } } if ( type ) { argp rs1 = NULL , rs2 = NULL , rd = NULL ; freg = ( current_thread_info ( ) -> xfsr [ 0 ] >> 14 ) & 0xf ; if ( freg != ( type >> 9 ) ) goto err ; current_thread_info ( ) -> xfsr [ 0 ] &= ~ 0x1c000 ; freg = ( ( insn >> 14 ) & 0x1f ) ; switch ( type & 0x3 ) { case 3 : if ( freg & 2 ) { current_thread_info ( ) -> xfsr [ 0 ] |= ( 6 << 14 ) ; goto err ; } case 2 : freg = ( ( freg & 1 ) << 5 ) | ( freg & 0x1e ) ; case 1 : rs1 = ( argp ) & f -> regs [ freg ] ; flags = ( freg < 32 ) ? FPRS_DL : FPRS_DU ; if ( ! ( current_thread_info ( ) -> fpsaved [ 0 ] & flags ) ) rs1 = ( argp ) & zero ; break ; } switch ( type & 0x7 ) { case 7 : FP_UNPACK_QP ( QA , rs1 ) ; break ; case 6 : FP_UNPACK_DP ( DA , rs1 ) ; break ; case 5 : FP_UNPACK_SP ( SA , rs1 ) ; break ; } freg = ( insn & 0x1f ) ; switch ( ( type >> 3 ) & 0x3 ) { case 3 : if ( freg & 2 ) { current_thread_info ( ) -> xfsr [ 0 ] |= ( 6 << 14 ) ; goto err ; } case 2 : freg = ( ( freg & 1 ) << 5 ) | ( freg & 0x1e ) ; case 1 : rs2 = ( argp ) & f -> regs [ freg ] ; flags = ( freg < 32 ) ? FPRS_DL : FPRS_DU ; if ( ! ( current_thread_info ( ) -> fpsaved [ 0 ] & flags ) ) rs2 = ( argp ) & zero ; break ; } switch ( ( type >> 3 ) & 0x7 ) { case 7 : FP_UNPACK_QP ( QB , rs2 ) ; break ; case 6 : FP_UNPACK_DP ( DB , rs2 ) ; break ; case 5 : FP_UNPACK_SP ( SB , rs2 ) ; break ; } freg = ( ( insn >> 25 ) & 0x1f ) ; switch ( ( type >> 6 ) & 0x3 ) { case 3 : if ( freg & 2 ) { current_thread_info ( ) -> xfsr [ 0 ] |= ( 6 << 14 ) ; goto err ; } case 2 : freg = ( ( freg & 1 ) << 5 ) | ( freg & 0x1e ) ; case 1 : rd = ( argp ) & f -> regs [ freg ] ; flags = ( freg < 32 ) ? FPRS_DL : FPRS_DU ; if ( ! ( current_thread_info ( ) -> fpsaved [ 0 ] & FPRS_FEF ) ) { current_thread_info ( ) -> fpsaved [ 0 ] = FPRS_FEF ; current_thread_info ( ) -> gsr [ 0 ] = 0 ; } if ( ! ( current_thread_info ( ) -> fpsaved [ 0 ] & flags ) ) { if ( freg < 32 ) memset ( f -> regs , 0 , 32 * sizeof ( u32 ) ) ; else memset ( f -> regs + 32 , 0 , 32 * sizeof ( u32 ) ) ; } current_thread_info ( ) -> fpsaved [ 0 ] |= flags ; break ; } switch ( ( insn >> 5 ) & 0x1ff ) { case FADDS : FP_ADD_S ( SR , SA , SB ) ; break ; case FADDD : FP_ADD_D ( DR , DA , DB ) ; break ; case FADDQ : FP_ADD_Q ( QR , QA , QB ) ; break ; case FSUBS : FP_SUB_S ( SR , SA , SB ) ; break ; case FSUBD : FP_SUB_D ( DR , DA , DB ) ; break ; case FSUBQ : FP_SUB_Q ( QR , QA , QB ) ; break ; case FMULS : FP_MUL_S ( SR , SA , SB ) ; break ; case FSMULD : FP_CONV ( D , S , 1 , 1 , DA , SA ) ; FP_CONV ( D , S , 1 , 1 , DB , SB ) ; case FMULD : FP_MUL_D ( DR , DA , DB ) ; break ; case FDMULQ : FP_CONV ( Q , D , 2 , 1 , QA , DA ) ; FP_CONV ( Q , D , 2 , 1 , QB , DB ) ; case FMULQ : FP_MUL_Q ( QR , QA , QB ) ; break ; case FDIVS : FP_DIV_S ( SR , SA , SB ) ; break ; case FDIVD : FP_DIV_D ( DR , DA , DB ) ; break ; case FDIVQ : FP_DIV_Q ( QR , QA , QB ) ; break ; case FSQRTS : FP_SQRT_S ( SR , SB ) ; break ; case FSQRTD : FP_SQRT_D ( DR , DB ) ; break ; case FSQRTQ : FP_SQRT_Q ( QR , QB ) ; break ; case FMOVQ : rd -> q [ 0 ] = rs2 -> q [ 0 ] ; rd -> q [ 1 ] = rs2 -> q [ 1 ] ; break ; case FABSQ : rd -> q [ 0 ] = rs2 -> q [ 0 ] & 0x7fffffffffffffffUL ; rd -> q [ 1 ] = rs2 -> q [ 1 ] ; break ; case FNEGQ : rd -> q [ 0 ] = rs2 -> q [ 0 ] ^ 0x8000000000000000UL ; rd -> q [ 1 ] = rs2 -> q [ 1 ] ; break ; case FSTOI : FP_TO_INT_S ( IR , SB , 32 , 1 ) ; break ; case FDTOI : FP_TO_INT_D ( IR , DB , 32 , 1 ) ; break ; case FQTOI : FP_TO_INT_Q ( IR , QB , 32 , 1 ) ; break ; case FSTOX : FP_TO_INT_S ( XR , SB , 64 , 1 ) ; break ; case FDTOX : FP_TO_INT_D ( XR , DB , 64 , 1 ) ; break ; case FQTOX : FP_TO_INT_Q ( XR , QB , 64 , 1 ) ; break ; case FITOQ : IR = rs2 -> s ; FP_FROM_INT_Q ( QR , IR , 32 , int ) ; break ; case FXTOQ : XR = rs2 -> d ; FP_FROM_INT_Q ( QR , XR , 64 , long ) ; break ; case FXTOS : XR = rs2 -> d ; FP_FROM_INT_S ( SR , XR , 64 , long ) ; break ; case FXTOD : XR = rs2 -> d ; FP_FROM_INT_D ( DR , XR , 64 , long ) ; break ; # if 0 case FITOS : IR = rs2 -> s ; FP_FROM_INT_S ( SR , IR , 32 , int ) ; break ; # endif case FITOD : IR = rs2 -> s ; FP_FROM_INT_D ( DR , IR , 32 , int ) ; break ; case FSTOD : FP_CONV ( D , S , 1 , 1 , DR , SB ) ; break ; case FSTOQ : FP_CONV ( Q , S , 2 , 1 , QR , SB ) ; break ; case FDTOQ : FP_CONV ( Q , D , 2 , 1 , QR , DB ) ; break ; case FDTOS : FP_CONV ( S , D , 1 , 1 , SR , DB ) ; break ; case FQTOS : FP_CONV ( S , Q , 1 , 2 , SR , QB ) ; break ; case FQTOD : FP_CONV ( D , Q , 1 , 2 , DR , QB ) ; break ; case FCMPQ : case FCMPEQ : FP_CMP_Q ( XR , QB , QA , 3 ) ; if ( XR == 3 && ( ( ( insn >> 5 ) & 0x1ff ) == FCMPEQ || FP_ISSIGNAN_Q ( QA ) || FP_ISSIGNAN_Q ( QB ) ) ) FP_SET_EXCEPTION ( FP_EX_INVALID ) ; } if ( ! FP_INHIBIT_RESULTS ) { switch ( ( type >> 6 ) & 0x7 ) { case 0 : xfsr = current_thread_info ( ) -> xfsr [ 0 ] ; if ( XR == - 1 ) XR = 2 ; switch ( freg & 3 ) { case 0 : xfsr &= ~ 0xc00 ; xfsr |= ( XR << 10 ) ; break ; case 1 : xfsr &= ~ 0x300000000UL ; xfsr |= ( XR << 32 ) ; break ; case 2 : xfsr &= ~ 0xc00000000UL ; xfsr |= ( XR << 34 ) ; break ; case 3 : xfsr &= ~ 0x3000000000UL ; xfsr |= ( XR << 36 ) ; break ; } current_thread_info ( ) -> xfsr [ 0 ] = xfsr ; break ; case 1 : rd -> s = IR ; break ; case 2 : rd -> d = XR ; break ; case 5 : FP_PACK_SP ( rd , SR ) ; break ; case 6 : FP_PACK_DP ( rd , DR ) ; break ; case 7 : FP_PACK_QP ( rd , QR ) ; break ; } } if ( _fex != 0 ) return record_exception ( regs , _fex ) ; current_thread_info ( ) -> xfsr [ 0 ] &= ~ ( FSR_CEXC_MASK ) ; regs -> tpc = regs -> tnpc ; regs -> tnpc += 4 ; return 1 ; } err : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0991\n\n```\nCWE-399 void mono_reflection_create_dynamic_method ( MonoReflectionDynamicMethod * mb ) { <S2SV_StartBug> ReflectionMethodBuilder rmb ; <S2SV_EndBug> MonoMethodSignature * sig ; MonoClass * klass ; GSList * l ; <S2SV_StartBug> int i ; <S2SV_EndBug> sig = dynamic_method_to_signature ( mb ) ; reflection_methodbuilder_from_dynamic_method ( & rmb , mb ) ; rmb . nrefs = mb -> nrefs ; rmb . refs = g_new0 ( gpointer , mb -> nrefs + 1 ) ; for ( i = 0 ; i < mb -> nrefs ; i += 2 ) { MonoClass * handle_class ; gpointer ref ; MonoObject * obj = mono_array_get ( mb -> refs , MonoObject * , i ) ; if ( strcmp ( obj -> vtable -> klass -> name , \"DynamicMethod\" ) == 0 ) { MonoReflectionDynamicMethod * method = ( MonoReflectionDynamicMethod * ) obj ; if ( method -> mhandle ) { ref = method -> mhandle ; } else { ref = method ; method -> referenced_by = g_slist_append ( method -> referenced_by , mb ) ; } handle_class = mono_defaults . methodhandle_class ; } else { MonoException * ex = NULL ; ref = resolve_object ( mb -> module -> image , obj , & handle_class , NULL ) ; if ( ! ref ) ex = mono_get_exception_type_load ( NULL , NULL ) ; else if ( mono_security_get_mode ( ) == MONO_SECURITY_MODE_CORE_CLR ) ex = mono_security_core_clr_ensure_dynamic_method_resolved_object ( ref , handle_class ) ; if ( ex ) { g_free ( rmb . refs ) ; mono_raise_exception ( ex ) ; return ; } } rmb . refs [ i ] = ref ; rmb . refs [ i + 1 ] = handle_class ; } klass = mb -> owner ? mono_class_from_mono_type ( mono_reflection_type_get_handle ( ( MonoReflectionType * ) mb -> owner ) ) : mono_defaults . object_class ; <S2SV_StartBug> mb -> mhandle = reflection_methodbuilder_to_mono_method ( klass , & rmb , sig ) ; <S2SV_EndBug> for ( l = mb -> referenced_by ; l ; l = l -> next ) { MonoReflectionDynamicMethod * method = ( MonoReflectionDynamicMethod * ) l -> data ; MonoMethodWrapper * wrapper = ( MonoMethodWrapper * ) method -> mhandle ; gpointer * data ; g_assert ( method -> mhandle ) ; data = ( gpointer * ) wrapper -> method_data ; for ( i = 0 ; i < GPOINTER_TO_UINT ( data [ 0 ] ) ; i += 2 ) { if ( ( data [ i + 1 ] == mb ) && ( data [ i + 1 + 1 ] == mono_defaults . methodhandle_class ) ) data [ i + 1 ] = mb -> mhandle ; } } g_slist_free ( mb -> referenced_by ) ; g_free ( rmb . refs ) ; mb -> ilgen = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mb ) { MonoReferenceQueue * queue ; MonoMethod * handle ; DynamicMethodReleaseData * release_data ; <S2SV_ModStart> int i ; if ( mono_runtime_is_shutting_down ( ) ) mono_raise_exception ( mono_get_exception_invalid_operation ( \"\" ) ) ; if ( ! ( queue = dynamic_method_queue ) ) { mono_loader_lock ( ) ; if ( ! ( queue = dynamic_method_queue ) ) queue = dynamic_method_queue = mono_gc_reference_queue_new ( free_dynamic_method ) ; mono_loader_unlock ( ) ; } <S2SV_ModStart> -> mhandle = handle = <S2SV_ModStart> rmb , sig ) ; release_data = g_new ( DynamicMethodReleaseData , 1 ) ; release_data -> handle = handle ; release_data -> domain = mono_object_get_domain ( ( MonoObject * ) mb ) ; if ( ! mono_gc_reference_queue_add ( queue , ( MonoObject * ) mb , release_data ) ) g_free ( release_data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_rc_bits_per_mb ( FRAME_TYPE frame_type , int qindex , <S2SV_StartBug> double correction_factor ) { <S2SV_EndBug> <S2SV_StartBug> const double q = vp9_convert_qindex_to_q ( qindex ) ; <S2SV_EndBug> <S2SV_StartBug> int enumerator = frame_type == KEY_FRAME ? 3300000 : 2250000 ; <S2SV_EndBug> enumerator += ( int ) ( enumerator * q ) >> 12 ; <S2SV_StartBug> return ( int ) ( 0.5 + ( enumerator * correction_factor / q ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , double correction_factor , vpx_bit_depth_t bit_depth <S2SV_ModStart> vp9_convert_qindex_to_q ( qindex , bit_depth <S2SV_ModStart> == KEY_FRAME ? 2700000 : 1800000 ; assert ( correction_factor <= MAX_BPB_FACTOR && correction_factor >= MIN_BPB_FACTOR ) <S2SV_ModEnd> ; enumerator += <S2SV_ModStart> int ) ( <S2SV_ModEnd> enumerator * correction_factor <S2SV_ModStart> / q ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13024\n\n```\nCWE-125 static int mobility_opt_print ( netdissect_options * ndo , const u_char * bp , const unsigned len ) { unsigned i , optlen ; for ( i = 0 ; i < len ; i += optlen ) { ND_TCHECK ( bp [ i ] ) ; if ( bp [ i ] == IP6MOPT_PAD1 ) optlen = 1 ; else { if ( i + 1 < len ) { ND_TCHECK ( bp [ i + 1 ] ) ; optlen = bp [ i + 1 ] + 2 ; } else goto trunc ; } if ( i + optlen > len ) goto trunc ; ND_TCHECK ( bp [ i + optlen ] ) ; switch ( bp [ i ] ) { case IP6MOPT_PAD1 : ND_PRINT ( ( ndo , \"(pad1)\" ) ) ; break ; case IP6MOPT_PADN : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(padn:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(padn)\" ) ) ; break ; case IP6MOPT_REFRESH : if ( len - i < IP6MOPT_REFRESH_MINLEN ) { ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ; ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>%u)\" , EXTRACT_16BITS ( & bp [ i + 2 ] ) << 2 ) ) ; break ; case IP6MOPT_ALTCOA : if ( len - i < IP6MOPT_ALTCOA_MINLEN ) { ND_PRINT ( ( ndo , \"(altcoa:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(alt-CoA:<S2SV_blank>%s)\" , ip6addr_string ( ndo , & bp [ i + 2 ] ) ) ) ; break ; case IP6MOPT_NONCEID : if ( len - i < IP6MOPT_NONCEID_MINLEN ) { ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>ho=0x%04x<S2SV_blank>co=0x%04x)\" , <S2SV_EndBug> EXTRACT_16BITS ( & bp [ i + 2 ] ) , EXTRACT_16BITS ( & bp [ i + 4 ] ) ) ) ; break ; case IP6MOPT_AUTH : if ( len - i < IP6MOPT_AUTH_MINLEN ) { ND_PRINT ( ( ndo , \"(auth:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(auth)\" ) ) ; break ; default : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(sopt_type<S2SV_blank>%u:<S2SV_blank>trunc)\" , bp [ i ] ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(type-0x%02x:<S2SV_blank>len=%u)\" , bp [ i ] , bp [ i + 1 ] ) ) ; break ; } } return 0 ; trunc : return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ; ND_TCHECK_16BITS ( & bp [ i + 4 ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-200 static int crypto_report_akcipher ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_akcipher rakcipher ; <S2SV_StartBug> strlcpy ( rakcipher . type , \"akcipher\" , sizeof ( rakcipher . type ) ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_AKCIPHER , sizeof ( struct crypto_report_akcipher ) , & rakcipher ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_akcipher rakcipher ; strncpy <S2SV_ModEnd> ( rakcipher .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 int do_remount_sb ( struct super_block * sb , int flags , void * data , int force ) { int retval ; int remount_ro ; if ( sb -> s_writers . frozen != SB_UNFROZEN ) return - EBUSY ; # ifdef CONFIG_BLOCK if ( ! ( flags & MS_RDONLY ) && bdev_read_only ( sb -> s_bdev ) ) return - EACCES ; # endif if ( flags & MS_RDONLY ) acct_auto_close ( sb ) ; shrink_dcache_sb ( sb ) ; sync_filesystem ( sb ) ; remount_ro = ( flags & MS_RDONLY ) && ! ( sb -> s_flags & MS_RDONLY ) ; if ( remount_ro ) { if ( force ) { <S2SV_StartBug> mark_files_ro ( sb ) ; <S2SV_EndBug> } else { retval = sb_prepare_remount_readonly ( sb ) ; if ( retval ) return retval ; } } if ( sb -> s_op -> remount_fs ) { retval = sb -> s_op -> remount_fs ( sb , & flags , data ) ; if ( retval ) { if ( ! force ) goto cancel_readonly ; WARN ( 1 , \"forced<S2SV_blank>remount<S2SV_blank>of<S2SV_blank>a<S2SV_blank>%s<S2SV_blank>fs<S2SV_blank>returned<S2SV_blank>%i\\\\n\" , sb -> s_type -> name , retval ) ; } } sb -> s_flags = ( sb -> s_flags & ~ MS_RMT_MASK ) | ( flags & MS_RMT_MASK ) ; smp_wmb ( ) ; sb -> s_readonly_remount = 0 ; if ( remount_ro && sb -> s_bdev ) invalidate_bdev ( sb -> s_bdev ) ; return 0 ; cancel_readonly : sb -> s_readonly_remount = 0 ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> force ) { sb -> s_readonly_remount = 1 ; smp_wmb ( <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 STREAM sec_recv ( RD_BOOL * is_fastpath ) { uint8 fastpath_hdr , fastpath_flags ; uint16 sec_flags ; uint16 channel ; STREAM s ; <S2SV_StartBug> while ( ( s = mcs_recv ( & channel , is_fastpath , & fastpath_hdr ) ) != NULL ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> if ( * is_fastpath == True ) { fastpath_flags = ( fastpath_hdr & 0xC0 ) >> 6 ; if ( fastpath_flags & FASTPATH_OUTPUT_ENCRYPTED ) <S2SV_StartBug> { <S2SV_EndBug> in_uint8s ( s , 8 ) ; sec_decrypt ( s -> p , s -> end - s -> p ) ; } return s ; } if ( g_encryption || ( ! g_licence_issued && ! g_licence_error_result ) ) { in_uint16_le ( s , sec_flags ) ; in_uint8s ( s , 2 ) ; if ( g_encryption ) { if ( sec_flags & SEC_ENCRYPT ) { <S2SV_StartBug> in_uint8s ( s , 8 ) ; <S2SV_EndBug> sec_decrypt ( s -> p , s -> end - s -> p ) ; } if ( sec_flags & SEC_LICENSE_PKT ) { licence_process ( s ) ; continue ; } if ( sec_flags & SEC_REDIRECTION_PKT ) { <S2SV_StartBug> uint8 swapbyte ; <S2SV_EndBug> in_uint8s ( s , 8 ) ; sec_decrypt ( s -> p , s -> end - s -> p ) ; if ( s -> p [ 0 ] == 0 && s -> p [ 1 ] == 4 ) { swapbyte = s -> p [ 0 ] ; s -> p [ 0 ] = s -> p [ 2 ] ; s -> p [ 2 ] = swapbyte ; swapbyte = s -> p [ 1 ] ; s -> p [ 1 ] = s -> p [ 3 ] ; s -> p [ 3 ] = swapbyte ; swapbyte = s -> p [ 2 ] ; s -> p [ 2 ] = s -> p [ 3 ] ; s -> p [ 3 ] = swapbyte ; } } } else { if ( sec_flags & SEC_LICENSE_PKT ) { licence_process ( s ) ; continue ; } s -> p -= 4 ; } } if ( channel != MCS_GLOBAL_CHANNEL ) { channel_process ( s , channel ) ; continue ; } return s ; } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> STREAM s ; struct stream packet ; <S2SV_ModStart> NULL ) { packet = * s ; <S2SV_ModStart> FASTPATH_OUTPUT_ENCRYPTED ) { if ( ! s_check_rem ( s , 8 ) ) { rdp_protocol_error ( \"sec_recv(),<S2SV_blank>consume<S2SV_blank>fastpath<S2SV_blank>signature<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; } <S2SV_ModStart> SEC_ENCRYPT ) { if ( ! s_check_rem ( s , 8 ) ) { rdp_protocol_error ( \"sec_recv(),<S2SV_blank>consume<S2SV_blank>encrypt<S2SV_blank>signature<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; } <S2SV_ModStart> uint8 swapbyte ; if ( ! s_check_rem ( s , 8 ) ) { rdp_protocol_error ( \"sec_recv(),<S2SV_blank>consume<S2SV_blank>redirect<S2SV_blank>signature<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4163\n\n```\nCWE-399 <S2SV_StartBug> static void ip6_append_data_mtu ( int * mtu , <S2SV_EndBug> int * maxfraglen , unsigned int fragheaderlen , struct sk_buff * skb , <S2SV_StartBug> struct rt6_info * rt ) <S2SV_EndBug> { if ( ! ( rt -> dst . flags & DST_XFRM_TUNNEL ) ) { if ( skb == NULL ) { * mtu = * mtu - rt -> dst . header_len ; } else { <S2SV_StartBug> * mtu = dst_mtu ( rt -> dst . path ) ; <S2SV_EndBug> } * maxfraglen = ( ( * mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ip6_append_data_mtu ( unsigned <S2SV_ModStart> rt6_info * rt , bool pmtuprobe <S2SV_ModStart> * mtu = min ( * mtu , pmtuprobe ? rt -> dst . dev -> mtu : <S2SV_ModStart> dst . path )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void build_y_mask ( const loop_filter_info_n * const lfi_n , const MODE_INFO * mi , const int shift_y , LOOP_FILTER_MASK * lfm ) { const MB_MODE_INFO * mbmi = & mi -> mbmi ; const BLOCK_SIZE block_size = mbmi -> sb_type ; const TX_SIZE tx_size_y = mbmi -> tx_size ; const int filter_level = get_filter_level ( lfi_n , mbmi ) ; uint64_t * const left_y = & lfm -> left_y [ tx_size_y ] ; uint64_t * const above_y = & lfm -> above_y [ tx_size_y ] ; uint64_t * const int_4x4_y = & lfm -> int_4x4_y ; int i ; if ( ! filter_level ) { return ; } else { const int w = num_8x8_blocks_wide_lookup [ block_size ] ; const int h = num_8x8_blocks_high_lookup [ block_size ] ; int index = shift_y ; for ( i = 0 ; i < h ; i ++ ) { <S2SV_StartBug> vpx_memset ( & lfm -> lfl_y [ index ] , filter_level , w ) ; <S2SV_EndBug> index += 8 ; } } * above_y |= above_prediction_mask [ block_size ] << shift_y ; * left_y |= left_prediction_mask [ block_size ] << shift_y ; if ( mbmi -> skip && is_inter_block ( mbmi ) ) return ; * above_y |= ( size_mask [ block_size ] & above_64x64_txform_mask [ tx_size_y ] ) << shift_y ; * left_y |= ( size_mask [ block_size ] & left_64x64_txform_mask [ tx_size_y ] ) << shift_y ; if ( tx_size_y == TX_4X4 ) <S2SV_StartBug> * int_4x4_y |= ( size_mask [ block_size ] & 0xffffffffffffffff ) << shift_y ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( & lfm <S2SV_ModStart> block_size ] & 0xffffffffffffffffULL <S2SV_ModEnd> ) << shift_y\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-77 <S2SV_StartBug> void imap_quote_string ( char * dest , size_t dlen , const char * src ) <S2SV_EndBug> { static const char quote [ ] = \"\\\\\"\\\\\\\\\" ; char * pt = dest ; const char * s = src ; * pt ++ = \\'\"\\' ; dlen -= 2 ; for ( ; * s && dlen ; s ++ ) { if ( strchr ( quote , * s ) ) { dlen -= 2 ; if ( dlen == 0 ) break ; * pt ++ = '\\\\\\\\' ; * pt ++ = * s ; } else { * pt ++ = * s ; dlen -- ; } } * pt ++ = \\'\"\\' ; * pt = '\\\\0' ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * src , bool quote_backtick ) { const char * quote = \"`\\\\\"\\\\\\\\\" ; if ( ! quote_backtick ) quote ++ <S2SV_ModEnd> ; char *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3225\n\n```\nCWE-200 static int rfcomm_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct rfcomm_dlc * d = rfcomm_pi ( sk ) -> dlc ; int len ; if ( test_and_clear_bit ( RFCOMM_DEFER_SETUP , & d -> flags ) ) { <S2SV_StartBug> rfcomm_dlc_accept ( d ) ; <S2SV_EndBug> return 0 ; } len = bt_sock_stream_recvmsg ( iocb , sock , msg , size , flags ) ; lock_sock ( sk ) ; if ( ! ( flags & MSG_PEEK ) && len > 0 ) atomic_sub ( len , & sk -> sk_rmem_alloc ) ; if ( atomic_read ( & sk -> sk_rmem_alloc ) <= ( sk -> sk_rcvbuf >> 2 ) ) rfcomm_dlc_unthrottle ( rfcomm_pi ( sk ) -> dlc ) ; release_sock ( sk ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( d ) ; msg -> msg_namelen = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8852\n\n```\nCWE-000 static int http_rxchunk ( struct http * hp ) { char * q ; int l , i ; l = hp -> prxbuf ; do ( void ) http_rxchar ( hp , 1 , 0 ) ; while ( hp -> rxbuf [ hp -> prxbuf - 1 ] != '\\\\n' ) ; vtc_dump ( hp -> vl , 4 , \"len\" , hp -> rxbuf + l , - 1 ) ; i = strtoul ( hp -> rxbuf + l , & q , 16 ) ; bprintf ( hp -> chunklen , \"%d\" , i ) ; if ( ( q == hp -> rxbuf + l ) || ( * q != '\\\\0' && ! vct_islws ( * q ) ) ) { vtc_log ( hp -> vl , hp -> fatal , \"chunked<S2SV_blank>fail<S2SV_blank>%02x<S2SV_blank>@<S2SV_blank>%d\" , * q , q - ( hp -> rxbuf + l ) ) ; } assert ( q != hp -> rxbuf + l ) ; assert ( * q == '\\\\0' || vct_islws ( * q ) ) ; hp -> prxbuf = l ; if ( i > 0 ) { ( void ) http_rxchar ( hp , i , 0 ) ; vtc_dump ( hp -> vl , 4 , \"chunk\" , hp -> rxbuf + l , i ) ; } l = hp -> prxbuf ; ( void ) http_rxchar ( hp , 2 , 0 ) ; <S2SV_StartBug> if ( ! vct_iscrlf ( hp -> rxbuf [ l ] ) ) <S2SV_EndBug> vtc_log ( hp -> vl , hp -> fatal , \"Wrong<S2SV_blank>chunk<S2SV_blank>tail[0]<S2SV_blank>=<S2SV_blank>%02x\" , hp -> rxbuf [ l ] & 0xff ) ; <S2SV_StartBug> if ( ! vct_iscrlf ( hp -> rxbuf [ l + 1 ] ) ) <S2SV_EndBug> vtc_log ( hp -> vl , hp -> fatal , \"Wrong<S2SV_blank>chunk<S2SV_blank>tail[1]<S2SV_blank>=<S2SV_blank>%02x\" , hp -> rxbuf [ l + 1 ] & 0xff ) ; hp -> prxbuf = l ; hp -> rxbuf [ l ] = '\\\\0' ; return ( i ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! vct_iscrlf ( & <S2SV_ModStart> ! vct_iscrlf ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14394\n\n```\nCWE-369 int ff_mov_write_packet ( AVFormatContext * s , AVPacket * pkt ) { MOVMuxContext * mov = s -> priv_data ; AVIOContext * pb = s -> pb ; MOVTrack * trk = & mov -> tracks [ pkt -> stream_index ] ; AVCodecParameters * par = trk -> par ; unsigned int samples_in_chunk = 0 ; int size = pkt -> size , ret = 0 ; uint8_t * reformatted_data = NULL ; ret = check_pkt ( s , pkt ) ; if ( ret < 0 ) return ret ; if ( mov -> flags & FF_MOV_FLAG_FRAGMENT ) { int ret ; if ( mov -> moov_written || mov -> flags & FF_MOV_FLAG_EMPTY_MOOV ) { if ( mov -> frag_interleave && mov -> fragments > 0 ) { if ( trk -> entry - trk -> entries_flushed >= mov -> frag_interleave ) { if ( ( ret = mov_flush_fragment_interleaving ( s , trk ) ) < 0 ) return ret ; } } if ( ! trk -> mdat_buf ) { if ( ( ret = avio_open_dyn_buf ( & trk -> mdat_buf ) ) < 0 ) return ret ; } pb = trk -> mdat_buf ; } else { if ( ! mov -> mdat_buf ) { if ( ( ret = avio_open_dyn_buf ( & mov -> mdat_buf ) ) < 0 ) return ret ; } pb = mov -> mdat_buf ; } } if ( par -> codec_id == AV_CODEC_ID_AMR_NB ) { static const uint16_t packed_size [ 16 ] = { 13 , 14 , 16 , 18 , 20 , 21 , 27 , 32 , 6 , 0 , 0 , 0 , 0 , 0 , 0 , 1 } ; int len = 0 ; while ( len < size && samples_in_chunk < 100 ) { len += packed_size [ ( pkt -> data [ len ] >> 3 ) & 0x0F ] ; samples_in_chunk ++ ; } if ( samples_in_chunk > 1 ) { av_log ( s , AV_LOG_ERROR , \"fatal<S2SV_blank>error,<S2SV_blank>input<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>single<S2SV_blank>packet,<S2SV_blank>implement<S2SV_blank>a<S2SV_blank>AVParser<S2SV_blank>for<S2SV_blank>it\\\\n\" ) ; return - 1 ; } } else if ( par -> codec_id == AV_CODEC_ID_ADPCM_MS || par -> codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ) { samples_in_chunk = trk -> par -> frame_size ; } else if ( trk -> sample_size ) samples_in_chunk = size / trk -> sample_size ; else samples_in_chunk = 1 ; <S2SV_StartBug> if ( trk -> vos_len == 0 && par -> extradata_size > 0 && <S2SV_EndBug> ! TAG_IS_AVCI ( trk -> tag ) && ( par -> codec_id != AV_CODEC_ID_DNXHD ) ) { trk -> vos_len = par -> extradata_size ; trk -> vos_data = av_malloc ( trk -> vos_len ) ; if ( ! trk -> vos_data ) { ret = AVERROR ( ENOMEM ) ; goto err ; } memcpy ( trk -> vos_data , par -> extradata , trk -> vos_len ) ; } if ( par -> codec_id == AV_CODEC_ID_AAC && pkt -> size > 2 && ( AV_RB16 ( pkt -> data ) & 0xfff0 ) == 0xfff0 ) { if ( ! s -> streams [ pkt -> stream_index ] -> nb_frames ) { av_log ( s , AV_LOG_ERROR , \"Malformed<S2SV_blank>AAC<S2SV_blank>bitstream<S2SV_blank>detected:<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>audio<S2SV_blank>bitstream<S2SV_blank>filter<S2SV_blank>\\'aac_adtstoasc\\'<S2SV_blank>to<S2SV_blank>fix<S2SV_blank>it<S2SV_blank>\" \"(\\'-bsf:a<S2SV_blank>aac_adtstoasc\\'<S2SV_blank>option<S2SV_blank>with<S2SV_blank>ffmpeg)\\\\n\" ) ; return - 1 ; } av_log ( s , AV_LOG_WARNING , \"aac<S2SV_blank>bitstream<S2SV_blank>error\\\\n\" ) ; } if ( par -> codec_id == AV_CODEC_ID_H264 && trk -> vos_len > 0 && * ( uint8_t * ) trk -> vos_data != 1 && ! TAG_IS_AVCI ( trk -> tag ) ) { if ( trk -> hint_track >= 0 && trk -> hint_track < mov -> nb_streams ) { ff_avc_parse_nal_units_buf ( pkt -> data , & reformatted_data , & size ) ; avio_write ( pb , reformatted_data , size ) ; } else { if ( trk -> cenc . aes_ctr ) { size = ff_mov_cenc_avc_parse_nal_units ( & trk -> cenc , pb , pkt -> data , size ) ; if ( size < 0 ) { ret = size ; goto err ; } } else { size = ff_avc_parse_nal_units ( pb , pkt -> data , pkt -> size ) ; } } } else if ( par -> codec_id == AV_CODEC_ID_HEVC && trk -> vos_len > 6 && ( AV_RB24 ( trk -> vos_data ) == 1 || AV_RB32 ( trk -> vos_data ) == 1 ) ) { if ( trk -> hint_track >= 0 && trk -> hint_track < mov -> nb_streams ) { ff_hevc_annexb2mp4_buf ( pkt -> data , & reformatted_data , & size , 0 , NULL ) ; avio_write ( pb , reformatted_data , size ) ; } else { size = ff_hevc_annexb2mp4 ( pb , pkt -> data , pkt -> size , 0 , NULL ) ; } # if CONFIG_AC3_PARSER } else if ( par -> codec_id == AV_CODEC_ID_EAC3 ) { size = handle_eac3 ( mov , pkt , trk ) ; if ( size < 0 ) return size ; else if ( ! size ) goto end ; avio_write ( pb , pkt -> data , size ) ; # endif } else { if ( trk -> cenc . aes_ctr ) { if ( par -> codec_id == AV_CODEC_ID_H264 && par -> extradata_size > 4 ) { int nal_size_length = ( par -> extradata [ 4 ] & 0x3 ) + 1 ; ret = ff_mov_cenc_avc_write_nal_units ( s , & trk -> cenc , nal_size_length , pb , pkt -> data , size ) ; } else { ret = ff_mov_cenc_write_packet ( & trk -> cenc , pb , pkt -> data , size ) ; } if ( ret ) { goto err ; } } else { avio_write ( pb , pkt -> data , size ) ; } } if ( ( par -> codec_id == AV_CODEC_ID_DNXHD || par -> codec_id == AV_CODEC_ID_AC3 ) && ! trk -> vos_len ) { trk -> vos_len = size ; trk -> vos_data = av_malloc ( size ) ; if ( ! trk -> vos_data ) { ret = AVERROR ( ENOMEM ) ; goto err ; } memcpy ( trk -> vos_data , pkt -> data , size ) ; } if ( trk -> entry >= trk -> cluster_capacity ) { unsigned new_capacity = 2 * ( trk -> entry + MOV_INDEX_CLUSTER_SIZE ) ; if ( av_reallocp_array ( & trk -> cluster , new_capacity , sizeof ( * trk -> cluster ) ) ) { ret = AVERROR ( ENOMEM ) ; goto err ; } trk -> cluster_capacity = new_capacity ; } trk -> cluster [ trk -> entry ] . pos = avio_tell ( pb ) - size ; trk -> cluster [ trk -> entry ] . samples_in_chunk = samples_in_chunk ; trk -> cluster [ trk -> entry ] . chunkNum = 0 ; trk -> cluster [ trk -> entry ] . size = size ; trk -> cluster [ trk -> entry ] . entries = samples_in_chunk ; trk -> cluster [ trk -> entry ] . dts = pkt -> dts ; trk -> cluster [ trk -> entry ] . pts = pkt -> pts ; if ( ! trk -> entry && trk -> start_dts != AV_NOPTS_VALUE ) { if ( ! trk -> frag_discont ) { trk -> cluster [ trk -> entry ] . dts = trk -> start_dts + trk -> track_duration ; if ( ( mov -> flags & FF_MOV_FLAG_DASH && ! ( mov -> flags & FF_MOV_FLAG_GLOBAL_SIDX ) ) || mov -> mode == MODE_ISM ) pkt -> pts = pkt -> dts + trk -> end_pts - trk -> cluster [ trk -> entry ] . dts ; } else { trk -> frag_start = pkt -> dts - trk -> start_dts ; trk -> end_pts = AV_NOPTS_VALUE ; trk -> frag_discont = 0 ; } } if ( ! trk -> entry && trk -> start_dts == AV_NOPTS_VALUE && ! mov -> use_editlist && s -> avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO ) { trk -> cluster [ trk -> entry ] . dts = trk -> start_dts = 0 ; } if ( trk -> start_dts == AV_NOPTS_VALUE ) { trk -> start_dts = pkt -> dts ; if ( trk -> frag_discont ) { if ( mov -> use_editlist ) { trk -> frag_start = pkt -> pts ; trk -> start_dts = pkt -> dts - pkt -> pts ; } else { trk -> frag_start = pkt -> dts ; trk -> start_dts = 0 ; } trk -> frag_discont = 0 ; } else if ( pkt -> dts && mov -> moov_written ) av_log ( s , AV_LOG_WARNING , \"Track<S2SV_blank>%d<S2SV_blank>starts<S2SV_blank>with<S2SV_blank>a<S2SV_blank>nonzero<S2SV_blank>dts<S2SV_blank>%\" PRId64 \",<S2SV_blank>while<S2SV_blank>the<S2SV_blank>moov<S2SV_blank>\" \"already<S2SV_blank>has<S2SV_blank>been<S2SV_blank>written.<S2SV_blank>Set<S2SV_blank>the<S2SV_blank>delay_moov<S2SV_blank>flag<S2SV_blank>to<S2SV_blank>handle<S2SV_blank>\" \"this<S2SV_blank>case.\\\\n\" , pkt -> stream_index , pkt -> dts ) ; } trk -> track_duration = pkt -> dts - trk -> start_dts + pkt -> duration ; trk -> last_sample_is_subtitle_end = 0 ; if ( pkt -> pts == AV_NOPTS_VALUE ) { av_log ( s , AV_LOG_WARNING , \"pts<S2SV_blank>has<S2SV_blank>no<S2SV_blank>value\\\\n\" ) ; pkt -> pts = pkt -> dts ; } if ( pkt -> dts != pkt -> pts ) trk -> flags |= MOV_TRACK_CTTS ; trk -> cluster [ trk -> entry ] . cts = pkt -> pts - pkt -> dts ; trk -> cluster [ trk -> entry ] . flags = 0 ; if ( trk -> start_cts == AV_NOPTS_VALUE ) trk -> start_cts = pkt -> pts - pkt -> dts ; if ( trk -> end_pts == AV_NOPTS_VALUE ) trk -> end_pts = trk -> cluster [ trk -> entry ] . dts + trk -> cluster [ trk -> entry ] . cts + pkt -> duration ; else trk -> end_pts = FFMAX ( trk -> end_pts , trk -> cluster [ trk -> entry ] . dts + trk -> cluster [ trk -> entry ] . cts + pkt -> duration ) ; if ( par -> codec_id == AV_CODEC_ID_VC1 ) { mov_parse_vc1_frame ( pkt , trk ) ; } else if ( pkt -> flags & AV_PKT_FLAG_KEY ) { if ( mov -> mode == MODE_MOV && par -> codec_id == AV_CODEC_ID_MPEG2VIDEO && trk -> entry > 0 ) { mov_parse_mpeg2_frame ( pkt , & trk -> cluster [ trk -> entry ] . flags ) ; if ( trk -> cluster [ trk -> entry ] . flags & MOV_PARTIAL_SYNC_SAMPLE ) trk -> flags |= MOV_TRACK_STPS ; } else { trk -> cluster [ trk -> entry ] . flags = MOV_SYNC_SAMPLE ; } if ( trk -> cluster [ trk -> entry ] . flags & MOV_SYNC_SAMPLE ) trk -> has_keyframes ++ ; } if ( pkt -> flags & AV_PKT_FLAG_DISPOSABLE ) { trk -> cluster [ trk -> entry ] . flags |= MOV_DISPOSABLE_SAMPLE ; trk -> has_disposable ++ ; } trk -> entry ++ ; trk -> sample_count += samples_in_chunk ; mov -> mdat_size += size ; if ( trk -> hint_track >= 0 && trk -> hint_track < mov -> nb_streams ) ff_mov_add_hinted_packet ( s , pkt , trk -> hint_track , trk -> entry , reformatted_data , size ) ; end : err : av_free ( reformatted_data ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( samples_in_chunk < 1 ) { av_log ( s , AV_LOG_ERROR , \"fatal<S2SV_blank>error,<S2SV_blank>input<S2SV_blank>packet<S2SV_blank>contains<S2SV_blank>no<S2SV_blank>samples\\\\n\" ) ; return AVERROR_PATCHWELCOME ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_CreateBool ( int b ) { cJSON * item = cJSON_New_Item ( ) ; if ( item ) item -> type = b ? cJSON_True : cJSON_False ; return item ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16451\n\n```\nCWE-125 static void print_trans ( netdissect_options * ndo , const u_char * words , const u_char * data1 , const u_char * buf , const u_char * maxbuf ) { u_int bcc ; const char * f1 , * f2 , * f3 , * f4 ; const u_char * data , * param ; const u_char * w = words + 1 ; int datalen , paramlen ; if ( request ) { ND_TCHECK2 ( w [ 12 * 2 ] , 2 ) ; paramlen = EXTRACT_LE_16BITS ( w + 9 * 2 ) ; param = buf + EXTRACT_LE_16BITS ( w + 10 * 2 ) ; datalen = EXTRACT_LE_16BITS ( w + 11 * 2 ) ; data = buf + EXTRACT_LE_16BITS ( w + 12 * 2 ) ; f1 = \"TotParamCnt=[d]<S2SV_blank>\\\\nTotDataCnt=[d]<S2SV_blank>\\\\nMaxParmCnt=[d]<S2SV_blank>\\\\nMaxDataCnt=[d]\\\\nMaxSCnt=[d]<S2SV_blank>\\\\nTransFlags=[w]<S2SV_blank>\\\\nRes1=[w]<S2SV_blank>\\\\nRes2=[w]<S2SV_blank>\\\\nRes3=[w]\\\\nParamCnt=[d]<S2SV_blank>\\\\nParamOff=[d]<S2SV_blank>\\\\nDataCnt=[d]<S2SV_blank>\\\\nDataOff=[d]<S2SV_blank>\\\\nSUCnt=[d]\\\\n\" ; f2 = \"|Name=[S]\\\\n\" ; f3 = \"|Param<S2SV_blank>\" ; f4 = \"|Data<S2SV_blank>\" ; } else { ND_TCHECK2 ( w [ 7 * 2 ] , 2 ) ; paramlen = EXTRACT_LE_16BITS ( w + 3 * 2 ) ; param = buf + EXTRACT_LE_16BITS ( w + 4 * 2 ) ; datalen = EXTRACT_LE_16BITS ( w + 6 * 2 ) ; data = buf + EXTRACT_LE_16BITS ( w + 7 * 2 ) ; f1 = \"TotParamCnt=[d]<S2SV_blank>\\\\nTotDataCnt=[d]<S2SV_blank>\\\\nRes1=[d]\\\\nParamCnt=[d]<S2SV_blank>\\\\nParamOff=[d]<S2SV_blank>\\\\nRes2=[d]<S2SV_blank>\\\\nDataCnt=[d]<S2SV_blank>\\\\nDataOff=[d]<S2SV_blank>\\\\nRes3=[d]\\\\nLsetup=[d]\\\\n\" ; f2 = \"|Unknown<S2SV_blank>\" ; f3 = \"|Param<S2SV_blank>\" ; f4 = \"|Data<S2SV_blank>\" ; } smb_fdata ( ndo , words + 1 , f1 , min ( words + 1 + 2 * words [ 0 ] , maxbuf ) , unicodestr ) ; ND_TCHECK2 ( * data1 , 2 ) ; bcc = EXTRACT_LE_16BITS ( data1 ) ; ND_PRINT ( ( ndo , \"smb_bcc=%u\\\\n\" , bcc ) ) ; if ( bcc > 0 ) { smb_fdata ( ndo , data1 + 2 , f2 , maxbuf - ( paramlen + datalen ) , unicodestr ) ; <S2SV_StartBug> if ( strcmp ( ( const char * ) ( data1 + 2 ) , \"\\\\\\\\MAILSLOT\\\\\\\\BROWSE\" ) == 0 ) { <S2SV_EndBug> print_browse ( ndo , param , paramlen , data , datalen ) ; return ; } <S2SV_StartBug> if ( strcmp ( ( const char * ) ( data1 + 2 ) , \"\\\\\\\\PIPE\\\\\\\\LANMAN\" ) == 0 ) { <S2SV_EndBug> print_ipc ( ndo , param , paramlen , data , datalen ) ; return ; } <S2SV_StartBug> if ( paramlen ) <S2SV_EndBug> smb_fdata ( ndo , param , f3 , min ( param + paramlen , maxbuf ) , unicodestr ) ; if ( datalen ) smb_fdata ( ndo , data , f4 , min ( data + datalen , maxbuf ) , unicodestr ) ; } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unicodestr ) ; # define MAILSLOT_BROWSE_STR \"\\\\\\\\MAILSLOT\\\\\\\\BROWSE\" ND_TCHECK2 ( * ( data1 + 2 ) , strlen ( MAILSLOT_BROWSE_STR ) + 1 ) ; <S2SV_ModStart> 2 ) , MAILSLOT_BROWSE_STR <S2SV_ModEnd> ) == 0 <S2SV_ModStart> return ; } # undef MAILSLOT_BROWSE_STR # define PIPE_LANMAN_STR \"\\\\\\\\PIPE\\\\\\\\LANMAN\" ND_TCHECK2 ( * ( data1 + 2 ) , strlen ( PIPE_LANMAN_STR ) + 1 ) ; <S2SV_ModStart> 2 ) , PIPE_LANMAN_STR <S2SV_ModEnd> ) == 0 <S2SV_ModStart> return ; } # undef PIPE_LANMAN_STR\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void open_input_file ( struct VpxInputContext * input ) { <S2SV_EndBug> input -> file = strcmp ( input -> filename , \"-\" ) ? fopen ( input -> filename , \"rb\" ) : set_binary_mode ( stdin ) ; if ( ! input -> file ) fatal ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>input<S2SV_blank>file\" ) ; if ( ! fseeko ( input -> file , 0 , SEEK_END ) ) { input -> length = ftello ( input -> file ) ; rewind ( input -> file ) ; } <S2SV_StartBug> input -> detect . buf_read = fread ( input -> detect . buf , 1 , 4 , input -> file ) ; <S2SV_EndBug> input -> detect . position = 0 ; if ( input -> detect . buf_read == 4 && file_is_y4m ( input -> detect . buf ) ) { if ( y4m_input_open ( & input -> y4m , input -> file , input -> detect . buf , 4 , input -> only_i420 ) >= 0 ) { input -> file_type = FILE_TYPE_Y4M ; input -> width = input -> y4m . pic_w ; input -> height = input -> y4m . pic_h ; <S2SV_StartBug> input -> framerate . numerator = input -> y4m . fps_n ; <S2SV_EndBug> input -> framerate . denominator = input -> y4m . fps_d ; <S2SV_StartBug> input -> use_i420 = 0 ; <S2SV_EndBug> } else fatal ( \"Unsupported<S2SV_blank>Y4M<S2SV_blank>stream.\" ) ; } else if ( input -> detect . buf_read == 4 && fourcc_is_ivf ( input -> detect . buf ) ) { fatal ( \"IVF<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>as<S2SV_blank>input.\" ) ; } else { input -> file_type = FILE_TYPE_RAW ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> } input -> pixel_aspect_ratio . numerator = 1 ; input -> pixel_aspect_ratio . denominator = 1 ; input -> <S2SV_ModStart> ; input -> pixel_aspect_ratio . numerator = input -> y4m . par_n ; input -> pixel_aspect_ratio . denominator = input -> y4m . par_d ; input -> <S2SV_ModStart> ; input -> fmt = input -> y4m . vpx_fmt ; input -> bit_depth = input -> y4m . bit_depth <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5892\n\n```\nCWE-000 bgp_size_t bgp_packet_attribute ( struct bgp * bgp , struct peer * peer , struct stream * s , struct attr * attr , struct bpacket_attr_vec_arr * vecarr , struct prefix * p , afi_t afi , safi_t safi , struct peer * from , struct prefix_rd * prd , mpls_label_t * label , uint32_t num_labels , int addpath_encode , uint32_t addpath_tx_id ) { size_t cp ; size_t aspath_sizep ; struct aspath * aspath ; int send_as4_path = 0 ; int send_as4_aggregator = 0 ; int use32bit = ( CHECK_FLAG ( peer -> cap , PEER_CAP_AS4_RCV ) ) ? 1 : 0 ; if ( ! bgp ) bgp = peer -> bgp ; cp = stream_get_endp ( s ) ; if ( p && ! ( ( afi == AFI_IP && safi == SAFI_UNICAST ) && ! peer_cap_enhe ( peer , afi , safi ) ) ) { size_t mpattrlen_pos = 0 ; mpattrlen_pos = bgp_packet_mpattr_start ( s , peer , afi , safi , vecarr , attr ) ; bgp_packet_mpattr_prefix ( s , afi , safi , p , prd , label , num_labels , addpath_encode , addpath_tx_id , attr ) ; bgp_packet_mpattr_end ( s , mpattrlen_pos ) ; } stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_ORIGIN ) ; stream_putc ( s , 1 ) ; stream_putc ( s , attr -> origin ) ; if ( peer -> sort == BGP_PEER_EBGP && ( ! CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_AS_PATH_UNCHANGED ) || attr -> aspath -> segments == NULL ) && ( ! CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_RSERVER_CLIENT ) ) ) { aspath = aspath_dup ( attr -> aspath ) ; aspath = aspath_delete_confed_seq ( aspath ) ; if ( CHECK_FLAG ( bgp -> config , BGP_CONFIG_CONFEDERATION ) ) { aspath = aspath_add_seq ( aspath , bgp -> confed_id ) ; } else { if ( peer -> change_local_as ) { if ( ! CHECK_FLAG ( peer -> flags , PEER_FLAG_LOCAL_AS_REPLACE_AS ) ) { aspath = aspath_add_seq ( aspath , peer -> local_as ) ; } aspath = aspath_add_seq ( aspath , peer -> change_local_as ) ; } else { aspath = aspath_add_seq ( aspath , peer -> local_as ) ; } } } else if ( peer -> sort == BGP_PEER_CONFED ) { aspath = aspath_dup ( attr -> aspath ) ; aspath = aspath_add_confed_seq ( aspath , peer -> local_as ) ; } else aspath = attr -> aspath ; stream_putc ( s , BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_AS_PATH ) ; aspath_sizep = stream_get_endp ( s ) ; stream_putw ( s , 0 ) ; stream_putw_at ( s , aspath_sizep , aspath_put ( s , aspath , use32bit ) ) ; if ( ! use32bit && aspath_has_as4 ( aspath ) ) send_as4_path = 1 ; if ( afi == AFI_IP && safi == SAFI_UNICAST && ! peer_cap_enhe ( peer , afi , safi ) ) { if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_NEXT_HOP ) ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_NEXT_HOP ) ; bpacket_attr_vec_arr_set_vec ( vecarr , BGP_ATTR_VEC_NH , s , attr ) ; stream_putc ( s , 4 ) ; stream_put_ipv4 ( s , attr -> nexthop . s_addr ) ; } else if ( peer_cap_enhe ( from , afi , safi ) ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_NEXT_HOP ) ; bpacket_attr_vec_arr_set_vec ( vecarr , BGP_ATTR_VEC_NH , s , NULL ) ; stream_putc ( s , 4 ) ; stream_put_ipv4 ( s , 0 ) ; } } if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_MULTI_EXIT_DISC ) || bgp -> maxmed_active ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL ) ; stream_putc ( s , BGP_ATTR_MULTI_EXIT_DISC ) ; stream_putc ( s , 4 ) ; stream_putl ( s , ( bgp -> maxmed_active ? bgp -> maxmed_value : attr -> med ) ) ; } if ( peer -> sort == BGP_PEER_IBGP || peer -> sort == BGP_PEER_CONFED ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_LOCAL_PREF ) ; stream_putc ( s , 4 ) ; stream_putl ( s , attr -> local_pref ) ; } if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_ATOMIC_AGGREGATE ) ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_ATOMIC_AGGREGATE ) ; stream_putc ( s , 0 ) ; } if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_AGGREGATOR ) ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_AGGREGATOR ) ; if ( use32bit ) { stream_putc ( s , 8 ) ; stream_putl ( s , attr -> aggregator_as ) ; } else { stream_putc ( s , 6 ) ; if ( attr -> aggregator_as > 65535 ) { stream_putw ( s , BGP_AS_TRANS ) ; send_as4_aggregator = 1 ; } else stream_putw ( s , ( uint16_t ) attr -> aggregator_as ) ; } stream_put_ipv4 ( s , attr -> aggregator_addr . s_addr ) ; } if ( CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_SEND_COMMUNITY ) && ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_COMMUNITIES ) ) ) { if ( attr -> community -> size * 4 > 255 ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_COMMUNITIES ) ; stream_putw ( s , attr -> community -> size * 4 ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_COMMUNITIES ) ; stream_putc ( s , attr -> community -> size * 4 ) ; } stream_put ( s , attr -> community -> val , attr -> community -> size * 4 ) ; } if ( CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_SEND_LARGE_COMMUNITY ) && ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_LARGE_COMMUNITIES ) ) ) { if ( lcom_length ( attr -> lcommunity ) > 255 ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_LARGE_COMMUNITIES ) ; stream_putw ( s , lcom_length ( attr -> lcommunity ) ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_LARGE_COMMUNITIES ) ; stream_putc ( s , lcom_length ( attr -> lcommunity ) ) ; } stream_put ( s , attr -> lcommunity -> val , lcom_length ( attr -> lcommunity ) ) ; } if ( peer -> sort == BGP_PEER_IBGP && from && from -> sort == BGP_PEER_IBGP ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL ) ; stream_putc ( s , BGP_ATTR_ORIGINATOR_ID ) ; stream_putc ( s , 4 ) ; if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_ORIGINATOR_ID ) ) stream_put_in_addr ( s , & attr -> originator_id ) ; else stream_put_in_addr ( s , & from -> remote_id ) ; stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL ) ; stream_putc ( s , BGP_ATTR_CLUSTER_LIST ) ; if ( attr -> cluster ) { stream_putc ( s , attr -> cluster -> length + 4 ) ; if ( bgp -> config & BGP_CONFIG_CLUSTER_ID ) stream_put_in_addr ( s , & bgp -> cluster_id ) ; else stream_put_in_addr ( s , & bgp -> router_id ) ; stream_put ( s , attr -> cluster -> list , attr -> cluster -> length ) ; } else { stream_putc ( s , 4 ) ; if ( bgp -> config & BGP_CONFIG_CLUSTER_ID ) stream_put_in_addr ( s , & bgp -> cluster_id ) ; else stream_put_in_addr ( s , & bgp -> router_id ) ; } } if ( CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_SEND_EXT_COMMUNITY ) && ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_EXT_COMMUNITIES ) ) ) { if ( peer -> sort == BGP_PEER_IBGP || peer -> sort == BGP_PEER_CONFED ) { if ( attr -> ecommunity -> size * 8 > 255 ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_EXT_COMMUNITIES ) ; stream_putw ( s , attr -> ecommunity -> size * 8 ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_EXT_COMMUNITIES ) ; stream_putc ( s , attr -> ecommunity -> size * 8 ) ; } stream_put ( s , attr -> ecommunity -> val , attr -> ecommunity -> size * 8 ) ; } else { uint8_t * pnt ; int tbit ; int ecom_tr_size = 0 ; int i ; for ( i = 0 ; i < attr -> ecommunity -> size ; i ++ ) { pnt = attr -> ecommunity -> val + ( i * 8 ) ; tbit = * pnt ; if ( CHECK_FLAG ( tbit , ECOMMUNITY_FLAG_NON_TRANSITIVE ) ) continue ; ecom_tr_size ++ ; } if ( ecom_tr_size ) { if ( ecom_tr_size * 8 > 255 ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_EXT_COMMUNITIES ) ; stream_putw ( s , ecom_tr_size * 8 ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_EXT_COMMUNITIES ) ; stream_putc ( s , ecom_tr_size * 8 ) ; } for ( i = 0 ; i < attr -> ecommunity -> size ; i ++ ) { pnt = attr -> ecommunity -> val + ( i * 8 ) ; tbit = * pnt ; if ( CHECK_FLAG ( tbit , ECOMMUNITY_FLAG_NON_TRANSITIVE ) ) continue ; stream_put ( s , pnt , 8 ) ; } } } } if ( safi == SAFI_LABELED_UNICAST ) { if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_PREFIX_SID ) ) { uint32_t label_index ; label_index = attr -> label_index ; if ( label_index != BGP_INVALID_LABEL_INDEX ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_PREFIX_SID ) ; stream_putc ( s , 10 ) ; stream_putc ( s , BGP_PREFIX_SID_LABEL_INDEX ) ; stream_putw ( s , BGP_PREFIX_SID_LABEL_INDEX_LENGTH ) ; stream_putc ( s , 0 ) ; stream_putw ( s , 0 ) ; stream_putl ( s , label_index ) ; } } } if ( send_as4_path ) { aspath = aspath_delete_confed_seq ( aspath ) ; stream_putc ( s , BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_AS4_PATH ) ; aspath_sizep = stream_get_endp ( s ) ; stream_putw ( s , 0 ) ; stream_putw_at ( s , aspath_sizep , aspath_put ( s , aspath , 1 ) ) ; } if ( aspath != attr -> aspath ) aspath_free ( aspath ) ; if ( send_as4_aggregator ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_AS4_AGGREGATOR ) ; stream_putc ( s , 8 ) ; stream_putl ( s , attr -> aggregator_as ) ; stream_put_ipv4 ( s , attr -> aggregator_addr . s_addr ) ; } if ( ( ( afi == AFI_IP || afi == AFI_IP6 ) && ( safi == SAFI_ENCAP || safi == SAFI_MPLS_VPN ) ) || ( afi == AFI_L2VPN && safi == SAFI_EVPN ) ) { bgp_packet_mpattr_tea ( bgp , peer , s , attr , BGP_ATTR_ENCAP ) ; <S2SV_StartBug> # if ENABLE_BGP_VNC <S2SV_EndBug> bgp_packet_mpattr_tea ( bgp , peer , s , attr , BGP_ATTR_VNC ) ; # endif } if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_PMSI_TUNNEL ) ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_PMSI_TUNNEL ) ; stream_putc ( s , 9 ) ; stream_putc ( s , 0 ) ; stream_putc ( s , PMSI_TNLTYPE_INGR_REPL ) ; stream_put ( s , & ( attr -> label ) , BGP_LABEL_BYTES ) ; stream_put_ipv4 ( s , attr -> nexthop . s_addr ) ; } if ( attr -> transit ) stream_put ( s , attr -> transit -> val , attr -> transit -> length ) ; return stream_get_endp ( s ) - cp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # if ENABLE_BGP_VNC_ATTR <S2SV_ModEnd> bgp_packet_mpattr_tea ( bgp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2634\n\n```\nCWE-399 static int dcbnl_ieee_fill ( struct sk_buff * skb , struct net_device * netdev ) { struct nlattr * ieee , * app ; struct dcb_app_type * itr ; const struct dcbnl_rtnl_ops * ops = netdev -> dcbnl_ops ; int dcbx ; int err ; if ( nla_put_string ( skb , DCB_ATTR_IFNAME , netdev -> name ) ) return - EMSGSIZE ; ieee = nla_nest_start ( skb , DCB_ATTR_IEEE ) ; if ( ! ieee ) return - EMSGSIZE ; if ( ops -> ieee_getets ) { struct ieee_ets ets ; <S2SV_StartBug> err = ops -> ieee_getets ( netdev , & ets ) ; <S2SV_EndBug> if ( ! err && nla_put ( skb , DCB_ATTR_IEEE_ETS , sizeof ( ets ) , & ets ) ) return - EMSGSIZE ; } if ( ops -> ieee_getmaxrate ) { struct ieee_maxrate maxrate ; <S2SV_StartBug> err = ops -> ieee_getmaxrate ( netdev , & maxrate ) ; <S2SV_EndBug> if ( ! err ) { err = nla_put ( skb , DCB_ATTR_IEEE_MAXRATE , sizeof ( maxrate ) , & maxrate ) ; if ( err ) return - EMSGSIZE ; } } if ( ops -> ieee_getpfc ) { <S2SV_StartBug> struct ieee_pfc pfc ; <S2SV_EndBug> err = ops -> ieee_getpfc ( netdev , & pfc ) ; if ( ! err && nla_put ( skb , DCB_ATTR_IEEE_PFC , sizeof ( pfc ) , & pfc ) ) return - EMSGSIZE ; } app = nla_nest_start ( skb , DCB_ATTR_IEEE_APP_TABLE ) ; if ( ! app ) return - EMSGSIZE ; spin_lock ( & dcb_lock ) ; list_for_each_entry ( itr , & dcb_app_list , list ) { if ( itr -> ifindex == netdev -> ifindex ) { err = nla_put ( skb , DCB_ATTR_IEEE_APP , sizeof ( itr -> app ) , & itr -> app ) ; if ( err ) { spin_unlock ( & dcb_lock ) ; return - EMSGSIZE ; } } } if ( netdev -> dcbnl_ops -> getdcbx ) dcbx = netdev -> dcbnl_ops -> getdcbx ( netdev ) ; else dcbx = - EOPNOTSUPP ; spin_unlock ( & dcb_lock ) ; nla_nest_end ( skb , app ) ; if ( ops -> ieee_peer_getets ) { struct ieee_ets ets ; <S2SV_StartBug> err = ops -> ieee_peer_getets ( netdev , & ets ) ; <S2SV_EndBug> if ( ! err && nla_put ( skb , DCB_ATTR_IEEE_PEER_ETS , sizeof ( ets ) , & ets ) ) return - EMSGSIZE ; } if ( ops -> ieee_peer_getpfc ) { <S2SV_StartBug> struct ieee_pfc pfc ; <S2SV_EndBug> err = ops -> ieee_peer_getpfc ( netdev , & pfc ) ; if ( ! err && nla_put ( skb , DCB_ATTR_IEEE_PEER_PFC , sizeof ( pfc ) , & pfc ) ) return - EMSGSIZE ; } if ( ops -> peer_getappinfo && ops -> peer_getapptable ) { err = dcbnl_build_peer_app ( netdev , skb , DCB_ATTR_IEEE_PEER_APP , DCB_ATTR_IEEE_APP_UNSPEC , DCB_ATTR_IEEE_APP ) ; if ( err ) return - EMSGSIZE ; } nla_nest_end ( skb , ieee ) ; if ( dcbx >= 0 ) { err = nla_put_u8 ( skb , DCB_ATTR_DCBX , dcbx ) ; if ( err ) return - EMSGSIZE ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ieee_ets ets ; memset ( & ets , 0 , sizeof ( ets ) ) ; <S2SV_ModStart> ieee_maxrate maxrate ; memset ( & maxrate , 0 , sizeof ( maxrate ) ) ; <S2SV_ModStart> struct ieee_pfc pfc ; memset ( & pfc , 0 , sizeof ( pfc ) ) <S2SV_ModStart> ieee_ets ets ; memset ( & ets , 0 , sizeof ( ets ) ) ; <S2SV_ModStart> struct ieee_pfc pfc ; memset ( & pfc , 0 , sizeof ( pfc ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13052\n\n```\nCWE-125 void cfm_print ( netdissect_options * ndo , register const u_char * pptr , register u_int length ) { const struct cfm_common_header_t * cfm_common_header ; const struct cfm_tlv_header_t * cfm_tlv_header ; const uint8_t * tptr , * tlv_ptr ; const uint8_t * namesp ; u_int names_data_remaining ; uint8_t md_nameformat , md_namelength ; const uint8_t * md_name ; uint8_t ma_nameformat , ma_namelength ; const uint8_t * ma_name ; u_int hexdump , tlen , cfm_tlv_len , cfm_tlv_type , ccm_interval ; union { const struct cfm_ccm_t * cfm_ccm ; const struct cfm_lbm_t * cfm_lbm ; const struct cfm_ltm_t * cfm_ltm ; const struct cfm_ltr_t * cfm_ltr ; } msg_ptr ; tptr = pptr ; cfm_common_header = ( const struct cfm_common_header_t * ) pptr ; if ( length < sizeof ( * cfm_common_header ) ) goto tooshort ; ND_TCHECK ( * cfm_common_header ) ; if ( CFM_EXTRACT_VERSION ( cfm_common_header -> mdlevel_version ) != CFM_VERSION ) { ND_PRINT ( ( ndo , \"CFMv%u<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>length<S2SV_blank>%u\" , CFM_EXTRACT_VERSION ( cfm_common_header -> mdlevel_version ) , length ) ) ; return ; } ND_PRINT ( ( ndo , \"CFMv%u<S2SV_blank>%s,<S2SV_blank>MD<S2SV_blank>Level<S2SV_blank>%u,<S2SV_blank>length<S2SV_blank>%u\" , CFM_EXTRACT_VERSION ( cfm_common_header -> mdlevel_version ) , tok2str ( cfm_opcode_values , \"unknown<S2SV_blank>(%u)\" , cfm_common_header -> opcode ) , CFM_EXTRACT_MD_LEVEL ( cfm_common_header -> mdlevel_version ) , length ) ) ; if ( ndo -> ndo_vflag < 1 ) { return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\tFirst<S2SV_blank>TLV<S2SV_blank>offset<S2SV_blank>%u\" , cfm_common_header -> first_tlv_offset ) ) ; tptr += sizeof ( const struct cfm_common_header_t ) ; tlen = length - sizeof ( struct cfm_common_header_t ) ; if ( cfm_common_header -> first_tlv_offset > tlen ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>large,<S2SV_blank>must<S2SV_blank>be<S2SV_blank><=<S2SV_blank>%u)\" , tlen ) ) ; return ; } switch ( cfm_common_header -> opcode ) { case CFM_OPCODE_CCM : msg_ptr . cfm_ccm = ( const struct cfm_ccm_t * ) tptr ; if ( cfm_common_header -> first_tlv_offset < sizeof ( * msg_ptr . cfm_ccm ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>small<S2SV_blank>1,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>%lu)\" , ( unsigned long ) sizeof ( * msg_ptr . cfm_ccm ) ) ) ; return ; } if ( tlen < sizeof ( * msg_ptr . cfm_ccm ) ) goto tooshort ; ND_TCHECK ( * msg_ptr . cfm_ccm ) ; ccm_interval = CFM_EXTRACT_CCM_INTERVAL ( cfm_common_header -> flags ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[CCM<S2SV_blank>Interval<S2SV_blank>%u%s]\" , ccm_interval , cfm_common_header -> flags & CFM_CCM_RDI_FLAG ? \",<S2SV_blank>RDI\" : \"\" ) ) ; if ( ccm_interval ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>CCM<S2SV_blank>Interval<S2SV_blank>%.3fs\" \",<S2SV_blank>min<S2SV_blank>CCM<S2SV_blank>Lifetime<S2SV_blank>%.3fs,<S2SV_blank>max<S2SV_blank>CCM<S2SV_blank>Lifetime<S2SV_blank>%.3fs\" , ccm_interval_base [ ccm_interval ] , ccm_interval_base [ ccm_interval ] * CCM_INTERVAL_MIN_MULTIPLIER , ccm_interval_base [ ccm_interval ] * CCM_INTERVAL_MAX_MULTIPLIER ) ) ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Sequence<S2SV_blank>Number<S2SV_blank>0x%08x,<S2SV_blank>MA-End-Point-ID<S2SV_blank>0x%04x\" , EXTRACT_32BITS ( msg_ptr . cfm_ccm -> sequence ) , EXTRACT_16BITS ( msg_ptr . cfm_ccm -> ma_epi ) ) ) ; namesp = msg_ptr . cfm_ccm -> names ; names_data_remaining = sizeof ( msg_ptr . cfm_ccm -> names ) ; md_nameformat = * namesp ; namesp ++ ; names_data_remaining -- ; if ( md_nameformat != CFM_CCM_MD_FORMAT_NONE ) { md_namelength = * namesp ; namesp ++ ; names_data_remaining -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MD<S2SV_blank>Name<S2SV_blank>Format<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>MD<S2SV_blank>Name<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( cfm_md_nameformat_values , \"Unknown\" , md_nameformat ) , md_nameformat , md_namelength ) ) ; if ( md_namelength > names_data_remaining - 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>large,<S2SV_blank>must<S2SV_blank>be<S2SV_blank><=<S2SV_blank>%u)\" , names_data_remaining - 2 ) ) ; return ; } md_name = namesp ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MD<S2SV_blank>Name:<S2SV_blank>\" ) ) ; switch ( md_nameformat ) { case CFM_CCM_MD_FORMAT_DNS : case CFM_CCM_MD_FORMAT_CHAR : safeputs ( ndo , md_name , md_namelength ) ; break ; case CFM_CCM_MD_FORMAT_MAC : if ( md_namelength == 6 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MAC<S2SV_blank>%s\" , etheraddr_string ( ndo , md_name ) ) ) ; } else { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MAC<S2SV_blank>(length<S2SV_blank>invalid)\" ) ) ; } break ; case CFM_CCM_MA_FORMAT_8021 : default : print_unknown_data ( ndo , md_name , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , md_namelength ) ; } namesp += md_namelength ; names_data_remaining -= md_namelength ; } else { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MD<S2SV_blank>Name<S2SV_blank>Format<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( cfm_md_nameformat_values , \"Unknown\" , md_nameformat ) , md_nameformat ) ) ; } ma_nameformat = * namesp ; namesp ++ ; names_data_remaining -- ; ma_namelength = * namesp ; namesp ++ ; names_data_remaining -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MA<S2SV_blank>Name-Format<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>MA<S2SV_blank>name<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( cfm_ma_nameformat_values , \"Unknown\" , ma_nameformat ) , ma_nameformat , ma_namelength ) ) ; if ( ma_namelength > names_data_remaining ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>large,<S2SV_blank>must<S2SV_blank>be<S2SV_blank><=<S2SV_blank>%u)\" , names_data_remaining ) ) ; return ; } ma_name = namesp ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MA<S2SV_blank>Name:<S2SV_blank>\" ) ) ; switch ( ma_nameformat ) { case CFM_CCM_MA_FORMAT_CHAR : safeputs ( ndo , ma_name , ma_namelength ) ; break ; case CFM_CCM_MA_FORMAT_8021 : case CFM_CCM_MA_FORMAT_VID : case CFM_CCM_MA_FORMAT_INT : case CFM_CCM_MA_FORMAT_VPN : default : print_unknown_data ( ndo , ma_name , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , ma_namelength ) ; } break ; case CFM_OPCODE_LTM : msg_ptr . cfm_ltm = ( const struct cfm_ltm_t * ) tptr ; if ( cfm_common_header -> first_tlv_offset < sizeof ( * msg_ptr . cfm_ltm ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>small<S2SV_blank>4,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>%lu)\" , ( unsigned long ) sizeof ( * msg_ptr . cfm_ltm ) ) ) ; return ; } if ( tlen < sizeof ( * msg_ptr . cfm_ltm ) ) goto tooshort ; ND_TCHECK ( * msg_ptr . cfm_ltm ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( cfm_ltm_flag_values , \"none\" , cfm_common_header -> flags ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Transaction-ID<S2SV_blank>0x%08x,<S2SV_blank>ttl<S2SV_blank>%u\" , EXTRACT_32BITS ( msg_ptr . cfm_ltm -> transaction_id ) , msg_ptr . cfm_ltm -> ttl ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Original-MAC<S2SV_blank>%s,<S2SV_blank>Target-MAC<S2SV_blank>%s\" , etheraddr_string ( ndo , msg_ptr . cfm_ltm -> original_mac ) , etheraddr_string ( ndo , msg_ptr . cfm_ltm -> target_mac ) ) ) ; break ; case CFM_OPCODE_LTR : msg_ptr . cfm_ltr = ( const struct cfm_ltr_t * ) tptr ; if ( cfm_common_header -> first_tlv_offset < sizeof ( * msg_ptr . cfm_ltr ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>small<S2SV_blank>5,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>%lu)\" , ( unsigned long ) sizeof ( * msg_ptr . cfm_ltr ) ) ) ; return ; } if ( tlen < sizeof ( * msg_ptr . cfm_ltr ) ) goto tooshort ; ND_TCHECK ( * msg_ptr . cfm_ltr ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( cfm_ltr_flag_values , \"none\" , cfm_common_header -> flags ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Transaction-ID<S2SV_blank>0x%08x,<S2SV_blank>ttl<S2SV_blank>%u\" , EXTRACT_32BITS ( msg_ptr . cfm_ltr -> transaction_id ) , msg_ptr . cfm_ltr -> ttl ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Replay-Action<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( cfm_ltr_replay_action_values , \"Unknown\" , msg_ptr . cfm_ltr -> replay_action ) , msg_ptr . cfm_ltr -> replay_action ) ) ; break ; case CFM_OPCODE_LBR : case CFM_OPCODE_LBM : default : print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , tlen - cfm_common_header -> first_tlv_offset ) ; break ; } tptr += cfm_common_header -> first_tlv_offset ; tlen -= cfm_common_header -> first_tlv_offset ; while ( tlen > 0 ) { cfm_tlv_header = ( const struct cfm_tlv_header_t * ) tptr ; ND_TCHECK2 ( * tptr , 1 ) ; cfm_tlv_type = cfm_tlv_header -> type ; ND_PRINT ( ( ndo , \"\\\\n\\\\t%s<S2SV_blank>TLV<S2SV_blank>(0x%02x)\" , tok2str ( cfm_tlv_values , \"Unknown\" , cfm_tlv_type ) , cfm_tlv_type ) ) ; if ( cfm_tlv_type == CFM_TLV_END ) { return ; } if ( tlen < sizeof ( struct cfm_tlv_header_t ) ) goto tooshort ; ND_TCHECK2 ( * tptr , sizeof ( struct cfm_tlv_header_t ) ) ; cfm_tlv_len = EXTRACT_16BITS ( & cfm_tlv_header -> length ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , cfm_tlv_len ) ) ; tptr += sizeof ( struct cfm_tlv_header_t ) ; tlen -= sizeof ( struct cfm_tlv_header_t ) ; tlv_ptr = tptr ; if ( tlen < cfm_tlv_len ) goto tooshort ; ND_TCHECK2 ( * tptr , cfm_tlv_len ) ; hexdump = FALSE ; switch ( cfm_tlv_type ) { case CFM_TLV_PORT_STATUS : if ( cfm_tlv_len < 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>1)\" ) ) ; return ; } ND_PRINT ( ( ndo , \",<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( cfm_tlv_port_status_values , \"Unknown\" , * tptr ) , * tptr ) ) ; break ; case CFM_TLV_INTERFACE_STATUS : if ( cfm_tlv_len < 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>1)\" ) ) ; return ; } ND_PRINT ( ( ndo , \",<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( cfm_tlv_interface_status_values , \"Unknown\" , * tptr ) , * tptr ) ) ; break ; case CFM_TLV_PRIVATE : if ( cfm_tlv_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return ; } ND_PRINT ( ( ndo , \",<S2SV_blank>Vendor:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Sub-Type<S2SV_blank>%u\" , tok2str ( oui_values , \"Unknown\" , EXTRACT_24BITS ( tptr ) ) , EXTRACT_24BITS ( tptr ) , * ( tptr + 3 ) ) ) ; hexdump = TRUE ; break ; case CFM_TLV_SENDER_ID : { u_int chassis_id_type , chassis_id_length ; u_int mgmt_addr_length ; if ( cfm_tlv_len < 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>1)\" ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } chassis_id_length = * tptr ; tptr ++ ; tlen -- ; cfm_tlv_len -- ; if ( chassis_id_length ) { if ( cfm_tlv_len < 1 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } chassis_id_type = * tptr ; cfm_tlv_len -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Chassis-ID<S2SV_blank>Type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Chassis-ID<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( cfm_tlv_senderid_chassisid_values , \"Unknown\" , chassis_id_type ) , chassis_id_type , chassis_id_length ) ) ; if ( cfm_tlv_len < chassis_id_length ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } switch ( chassis_id_type ) { <S2SV_StartBug> case CFM_CHASSIS_ID_MAC_ADDRESS : <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MAC<S2SV_blank>%s\" , etheraddr_string ( ndo , tptr + 1 ) ) ) ; break ; case CFM_CHASSIS_ID_NETWORK_ADDRESS : <S2SV_StartBug> hexdump |= cfm_network_addr_print ( ndo , tptr ) ; <S2SV_EndBug> break ; case CFM_CHASSIS_ID_INTERFACE_NAME : case CFM_CHASSIS_ID_INTERFACE_ALIAS : case CFM_CHASSIS_ID_LOCAL : case CFM_CHASSIS_ID_CHASSIS_COMPONENT : case CFM_CHASSIS_ID_PORT_COMPONENT : safeputs ( ndo , tptr + 1 , chassis_id_length ) ; break ; default : hexdump = TRUE ; break ; } cfm_tlv_len -= chassis_id_length ; tptr += 1 + chassis_id_length ; tlen -= 1 + chassis_id_length ; } if ( cfm_tlv_len == 0 ) { <S2SV_StartBug> return ; <S2SV_EndBug> } mgmt_addr_length = * tptr ; tptr ++ ; tlen -- ; cfm_tlv_len -- ; <S2SV_StartBug> if ( mgmt_addr_length ) { <S2SV_EndBug> if ( cfm_tlv_len < mgmt_addr_length ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } <S2SV_StartBug> cfm_tlv_len -= mgmt_addr_length ; <S2SV_EndBug> tptr += mgmt_addr_length ; tlen -= mgmt_addr_length ; if ( cfm_tlv_len < 1 ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; <S2SV_EndBug> return ; } mgmt_addr_length = * tptr ; tptr ++ ; tlen -- ; cfm_tlv_len -- ; <S2SV_StartBug> if ( mgmt_addr_length ) { <S2SV_EndBug> if ( cfm_tlv_len < mgmt_addr_length ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; return ; } <S2SV_StartBug> cfm_tlv_len -= mgmt_addr_length ; <S2SV_EndBug> tptr += mgmt_addr_length ; tlen -= mgmt_addr_length ; } } break ; } case CFM_TLV_DATA : case CFM_TLV_REPLY_INGRESS : case CFM_TLV_REPLY_EGRESS : default : hexdump = TRUE ; break ; } if ( hexdump || ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , tlv_ptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , cfm_tlv_len ) ; <S2SV_StartBug> tptr += cfm_tlv_len ; <S2SV_EndBug> tlen -= cfm_tlv_len ; } return ; tooshort : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>is<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>exceeded<S2SV_blank>snapshot\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; goto next_tlv <S2SV_ModEnd> ; } chassis_id_length <S2SV_ModStart> ) ) ; goto next_tlv <S2SV_ModEnd> ; } chassis_id_type <S2SV_ModStart> ) ) ; goto next_tlv <S2SV_ModEnd> ; } switch <S2SV_ModStart> case CFM_CHASSIS_ID_MAC_ADDRESS : if ( chassis_id_length != ETHER_ADDR_LEN ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(invalid<S2SV_blank>MAC<S2SV_blank>address<S2SV_blank>length)\" ) ) ; hexdump = TRUE ; break ; } <S2SV_ModStart> ndo , tptr + 1 , chassis_id_length <S2SV_ModStart> 0 ) { break <S2SV_ModEnd> ; } mgmt_addr_length <S2SV_ModStart> cfm_tlv_len -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address<S2SV_blank>Domain<S2SV_blank>Length<S2SV_blank>%u\" , mgmt_addr_length ) ) ; <S2SV_ModStart> ) ) ; goto next_tlv <S2SV_ModEnd> ; } cfm_tlv_len <S2SV_ModStart> cfm_tlv_len -= mgmt_addr_length ; hex_print ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address<S2SV_blank>Domain:<S2SV_blank>\" , tptr , mgmt_addr_length ) <S2SV_ModStart> ( ndo , \"<S2SV_blank>(Management<S2SV_blank>Address<S2SV_blank>Length<S2SV_blank>is<S2SV_blank>missing)\" ) ) ; hexdump = TRUE ; break <S2SV_ModEnd> ; } mgmt_addr_length <S2SV_ModStart> cfm_tlv_len -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address<S2SV_blank>Length<S2SV_blank>%u\" , mgmt_addr_length ) ) ; <S2SV_ModStart> cfm_tlv_len -= mgmt_addr_length ; hex_print ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address:<S2SV_blank>\" , tptr , mgmt_addr_length ) <S2SV_ModStart> cfm_tlv_len ) ; next_tlv :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void fadst4_sse2 ( __m128i * in ) { <S2SV_EndBug> const __m128i k__sinpi_p01_p02 = pair_set_epi16 ( sinpi_1_9 , sinpi_2_9 ) ; const __m128i k__sinpi_p04_m01 = pair_set_epi16 ( sinpi_4_9 , - sinpi_1_9 ) ; const __m128i k__sinpi_p03_p04 = pair_set_epi16 ( sinpi_3_9 , sinpi_4_9 ) ; const __m128i k__sinpi_m03_p02 = pair_set_epi16 ( - sinpi_3_9 , sinpi_2_9 ) ; <S2SV_StartBug> const __m128i k__sinpi_p03_p03 = _mm_set1_epi16 ( sinpi_3_9 ) ; <S2SV_EndBug> const __m128i kZero = _mm_set1_epi16 ( 0 ) ; const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32 ( DCT_CONST_ROUNDING ) ; __m128i u [ 8 ] , v [ 8 ] ; __m128i in7 = _mm_add_epi16 ( in [ 0 ] , in [ 1 ] ) ; u [ 0 ] = _mm_unpacklo_epi16 ( in [ 0 ] , in [ 1 ] ) ; u [ 1 ] = _mm_unpacklo_epi16 ( in [ 2 ] , in [ 3 ] ) ; u [ 2 ] = _mm_unpacklo_epi16 ( in7 , kZero ) ; u [ 3 ] = _mm_unpacklo_epi16 ( in [ 2 ] , kZero ) ; u [ 4 ] = _mm_unpacklo_epi16 ( in [ 3 ] , kZero ) ; v [ 0 ] = _mm_madd_epi16 ( u [ 0 ] , k__sinpi_p01_p02 ) ; v [ 1 ] = _mm_madd_epi16 ( u [ 1 ] , k__sinpi_p03_p04 ) ; v [ 2 ] = _mm_madd_epi16 ( u [ 2 ] , k__sinpi_p03_p03 ) ; v [ 3 ] = _mm_madd_epi16 ( u [ 0 ] , k__sinpi_p04_m01 ) ; v [ 4 ] = _mm_madd_epi16 ( u [ 1 ] , k__sinpi_m03_p02 ) ; v [ 5 ] = _mm_madd_epi16 ( u [ 3 ] , k__sinpi_p03_p03 ) ; v [ 6 ] = _mm_madd_epi16 ( u [ 4 ] , k__sinpi_p03_p03 ) ; u [ 0 ] = _mm_add_epi32 ( v [ 0 ] , v [ 1 ] ) ; u [ 1 ] = _mm_sub_epi32 ( v [ 2 ] , v [ 6 ] ) ; u [ 2 ] = _mm_add_epi32 ( v [ 3 ] , v [ 4 ] ) ; u [ 3 ] = _mm_sub_epi32 ( u [ 2 ] , u [ 0 ] ) ; u [ 4 ] = _mm_slli_epi32 ( v [ 5 ] , 2 ) ; u [ 5 ] = _mm_sub_epi32 ( u [ 4 ] , v [ 5 ] ) ; u [ 6 ] = _mm_add_epi32 ( u [ 3 ] , u [ 5 ] ) ; v [ 0 ] = _mm_add_epi32 ( u [ 0 ] , k__DCT_CONST_ROUNDING ) ; v [ 1 ] = _mm_add_epi32 ( u [ 1 ] , k__DCT_CONST_ROUNDING ) ; v [ 2 ] = _mm_add_epi32 ( u [ 2 ] , k__DCT_CONST_ROUNDING ) ; v [ 3 ] = _mm_add_epi32 ( u [ 6 ] , k__DCT_CONST_ROUNDING ) ; u [ 0 ] = _mm_srai_epi32 ( v [ 0 ] , DCT_CONST_BITS ) ; u [ 1 ] = _mm_srai_epi32 ( v [ 1 ] , DCT_CONST_BITS ) ; u [ 2 ] = _mm_srai_epi32 ( v [ 2 ] , DCT_CONST_BITS ) ; u [ 3 ] = _mm_srai_epi32 ( v [ 3 ] , DCT_CONST_BITS ) ; in [ 0 ] = _mm_packs_epi32 ( u [ 0 ] , u [ 2 ] ) ; in [ 1 ] = _mm_packs_epi32 ( u [ 1 ] , u [ 3 ] ) ; transpose_4x4 ( in ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> = _mm_set1_epi16 ( ( int16_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , char * * argv ) { int frame_cnt = 0 ; FILE * outfile = NULL ; vpx_codec_ctx_t codec ; VpxVideoReader * reader = NULL ; const VpxInterface * decoder = NULL ; const VpxVideoInfo * info = NULL ; exec_name = argv [ 0 ] ; if ( argc != 3 ) die ( \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments.\" ) ; reader = vpx_video_reader_open ( argv [ 1 ] ) ; if ( ! reader ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading.\" , argv [ 1 ] ) ; if ( ! ( outfile = fopen ( argv [ 2 ] , \"wb\" ) ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing.\" , argv [ 2 ] ) ; info = vpx_video_reader_get_info ( reader ) ; decoder = get_vpx_decoder_by_fourcc ( info -> codec_fourcc ) ; if ( ! decoder ) die ( \"Unknown<S2SV_blank>input<S2SV_blank>codec.\" ) ; <S2SV_StartBug> printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( decoder -> interface ( ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( vpx_codec_dec_init ( & codec , decoder -> interface ( ) , NULL , 0 ) ) <S2SV_EndBug> die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>decoder.\" ) ; while ( vpx_video_reader_read_frame ( reader ) ) { vpx_codec_iter_t iter = NULL ; vpx_image_t * img = NULL ; size_t frame_size = 0 ; const unsigned char * frame = vpx_video_reader_get_frame ( reader , & frame_size ) ; if ( vpx_codec_decode ( & codec , frame , ( unsigned int ) frame_size , NULL , 0 ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>frame.\" ) ; while ( ( img = vpx_codec_get_frame ( & codec , & iter ) ) != NULL ) { vpx_img_write ( img , outfile ) ; ++ frame_cnt ; } } printf ( \"Processed<S2SV_blank>%d<S2SV_blank>frames.\\\\n\" , frame_cnt ) ; if ( vpx_codec_destroy ( & codec ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>codec\" ) ; printf ( \"Play:<S2SV_blank>ffplay<S2SV_blank>-f<S2SV_blank>rawvideo<S2SV_blank>-pix_fmt<S2SV_blank>yuv420p<S2SV_blank>-s<S2SV_blank>%dx%d<S2SV_blank>%s\\\\n\" , info -> frame_width , info -> frame_height , argv [ 2 ] ) ; vpx_video_reader_close ( reader ) ; fclose ( outfile ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( decoder -> codec_interface <S2SV_ModEnd> ( ) ) <S2SV_ModStart> , decoder -> codec_interface <S2SV_ModEnd> ( ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3222\n\n```\nCWE-200 int vcc_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct atm_vcc * vcc ; struct sk_buff * skb ; <S2SV_StartBug> int copied , error = - EINVAL ; <S2SV_EndBug> if ( sock -> state != SS_CONNECTED ) return - ENOTCONN ; if ( flags & ~ ( MSG_DONTWAIT | MSG_PEEK ) ) return - EOPNOTSUPP ; vcc = ATM_SD ( sock ) ; if ( test_bit ( ATM_VF_RELEASED , & vcc -> flags ) || test_bit ( ATM_VF_CLOSE , & vcc -> flags ) || ! test_bit ( ATM_VF_READY , & vcc -> flags ) ) return 0 ; skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & error ) ; if ( ! skb ) return error ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } error = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( error ) return error ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { pr_debug ( \"%d<S2SV_blank>-=<S2SV_blank>%d\\\\n\" , atomic_read ( & sk -> sk_rmem_alloc ) , skb -> truesize ) ; atm_return ( vcc , skb -> truesize ) ; } skb_free_datagram ( sk , skb ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = - EINVAL ; msg -> msg_namelen = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-320(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10011\n\n```\nCWE-320 int sshkey_load_file ( int fd , struct sshbuf * blob ) { u_char buf [ 1024 ] ; size_t len ; struct stat st ; <S2SV_StartBug> int r ; <S2SV_EndBug> if ( fstat ( fd , & st ) < 0 ) return SSH_ERR_SYSTEM_ERROR ; if ( ( st . st_mode & ( S_IFSOCK | S_IFCHR | S_IFIFO ) ) == 0 && st . st_size > MAX_KEY_FILE_SIZE ) return SSH_ERR_INVALID_FORMAT ; <S2SV_StartBug> for ( ; ; ) { <S2SV_EndBug> if ( ( len = atomicio ( read , fd , buf , sizeof ( buf ) ) ) == 0 ) { if ( errno == EPIPE ) break ; r = SSH_ERR_SYSTEM_ERROR ; goto out ; } if ( ( r = sshbuf_put ( blob , buf , len ) ) != 0 ) goto out ; if ( sshbuf_len ( blob ) > MAX_KEY_FILE_SIZE ) { r = SSH_ERR_INVALID_FORMAT ; goto out ; } } if ( ( st . st_mode & ( S_IFSOCK | S_IFCHR | S_IFIFO ) ) == 0 && st . st_size != ( off_t ) sshbuf_len ( blob ) ) { r = SSH_ERR_FILE_CHANGED ; goto out ; } r = 0 ; out : explicit_bzero ( buf , sizeof ( buf ) ) ; if ( r != 0 ) sshbuf_reset ( blob ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int r , dontmax = 0 <S2SV_ModStart> return SSH_ERR_INVALID_FORMAT ; if ( ( st . st_mode & S_IFREG ) == 0 || st . st_size <= 0 ) { st . st_size = 64 * 1024 ; dontmax = 1 ; } if ( ( r = sshbuf_allocate ( blob , st . st_size ) ) != 0 || ( dontmax && ( r = sshbuf_set_max_size ( blob , st . st_size ) ) != 0 ) ) return r ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9904\n\n```\nCWE-000 static int snd_compress_check_input ( struct snd_compr_params * params ) { if ( params -> buffer . fragment_size == 0 || <S2SV_StartBug> params -> buffer . fragments > SIZE_MAX / params -> buffer . fragment_size ) <S2SV_EndBug> return - EINVAL ; if ( params -> codec . id == 0 || params -> codec . id > SND_AUDIOCODEC_MAX ) return - EINVAL ; if ( params -> codec . ch_in == 0 || params -> codec . ch_out == 0 ) return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . fragments > INT_MAX <S2SV_ModEnd> / params ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28374\n\n```\nCWE-22 static int target_xcopy_parse_target_descriptors ( struct se_cmd * se_cmd , struct xcopy_op * xop , unsigned char * p , unsigned short tdll , sense_reason_t * sense_ret ) { struct se_device * local_dev = se_cmd -> se_dev ; unsigned char * desc = p ; int offset = tdll % XCOPY_TARGET_DESC_LEN , rc ; unsigned short cscd_index = 0 ; unsigned short start = 0 ; * sense_ret = TCM_INVALID_PARAMETER_LIST ; if ( offset != 0 ) { pr_err ( \"XCOPY<S2SV_blank>target<S2SV_blank>descriptor<S2SV_blank>list<S2SV_blank>length<S2SV_blank>is<S2SV_blank>not\" \"<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>%d\\\\n\" , XCOPY_TARGET_DESC_LEN ) ; * sense_ret = TCM_UNSUPPORTED_TARGET_DESC_TYPE_CODE ; return - EINVAL ; } if ( tdll > RCR_OP_MAX_TARGET_DESC_COUNT * XCOPY_TARGET_DESC_LEN ) { pr_err ( \"XCOPY<S2SV_blank>target<S2SV_blank>descriptor<S2SV_blank>supports<S2SV_blank>a<S2SV_blank>maximum\" \"<S2SV_blank>two<S2SV_blank>src/dest<S2SV_blank>descriptors,<S2SV_blank>tdll:<S2SV_blank>%hu<S2SV_blank>too<S2SV_blank>large..\\\\n\" , tdll ) ; * sense_ret = TCM_TOO_MANY_TARGET_DESCS ; return - EINVAL ; } memset ( & xop -> local_dev_wwn [ 0 ] , 0 , XCOPY_NAA_IEEE_REGEX_LEN ) ; target_xcopy_gen_naa_ieee ( local_dev , & xop -> local_dev_wwn [ 0 ] ) ; while ( start < tdll ) { switch ( desc [ 0 ] ) { case 0xe4 : rc = target_xcopy_parse_tiddesc_e4 ( se_cmd , xop , & desc [ 0 ] , cscd_index ) ; if ( rc != 0 ) goto out ; start += XCOPY_TARGET_DESC_LEN ; desc += XCOPY_TARGET_DESC_LEN ; cscd_index ++ ; break ; default : pr_err ( \"XCOPY<S2SV_blank>unsupported<S2SV_blank>descriptor<S2SV_blank>type<S2SV_blank>code:\" \"<S2SV_blank>0x%02x\\\\n\" , desc [ 0 ] ) ; * sense_ret = TCM_UNSUPPORTED_TARGET_DESC_TYPE_CODE ; goto out ; } } switch ( xop -> op_origin ) { case XCOL_SOURCE_RECV_OP : <S2SV_StartBug> rc = target_xcopy_locate_se_dev_e4 ( xop -> dst_tid_wwn , <S2SV_EndBug> <S2SV_StartBug> & xop -> dst_dev ) ; <S2SV_EndBug> break ; case XCOL_DEST_RECV_OP : <S2SV_StartBug> rc = target_xcopy_locate_se_dev_e4 ( xop -> src_tid_wwn , <S2SV_EndBug> <S2SV_StartBug> & xop -> src_dev ) ; <S2SV_EndBug> break ; default : pr_err ( \"XCOPY<S2SV_blank>CSCD<S2SV_blank>descriptor<S2SV_blank>IDs<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>CSCD<S2SV_blank>list<S2SV_blank>-<S2SV_blank>\" \"stdi:<S2SV_blank>%hu<S2SV_blank>dtdi:<S2SV_blank>%hu\\\\n\" , xop -> stdi , xop -> dtdi ) ; rc = - EINVAL ; break ; } if ( rc < 0 ) { * sense_ret = TCM_COPY_TARGET_DEVICE_NOT_REACHABLE ; goto out ; } pr_debug ( \"XCOPY<S2SV_blank>TGT<S2SV_blank>desc:<S2SV_blank>Source<S2SV_blank>dev:<S2SV_blank>%p<S2SV_blank>NAA<S2SV_blank>IEEE<S2SV_blank>WWN:<S2SV_blank>0x%16phN\\\\n\" , xop -> src_dev , & xop -> src_tid_wwn [ 0 ] ) ; pr_debug ( \"XCOPY<S2SV_blank>TGT<S2SV_blank>desc:<S2SV_blank>Dest<S2SV_blank>dev:<S2SV_blank>%p<S2SV_blank>NAA<S2SV_blank>IEEE<S2SV_blank>WWN:<S2SV_blank>0x%16phN\\\\n\" , xop -> dst_dev , & xop -> dst_tid_wwn [ 0 ] ) ; return cscd_index ; out : return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = target_xcopy_locate_se_dev_e4 ( se_cmd -> se_sess , <S2SV_ModStart> xop -> dst_dev , & xop -> remote_lun_ref <S2SV_ModStart> = target_xcopy_locate_se_dev_e4 ( se_cmd -> se_sess , <S2SV_ModStart> xop -> src_dev , & xop -> remote_lun_ref\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4483\n\n```\nCWE-189 <S2SV_StartBug> void ipc_rcu_getref ( void * ptr ) <S2SV_EndBug> { <S2SV_StartBug> container_of ( ptr , struct ipc_rcu_hdr , data ) -> refcount ++ ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> int <S2SV_ModEnd> ipc_rcu_getref ( void <S2SV_ModStart> ptr ) { return atomic_inc_not_zero ( & <S2SV_ModStart> ) -> refcount ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3520\n\n```\nCWE-287 static int netlink_sendmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct sock * sk = sock -> sk ; struct netlink_sock * nlk = nlk_sk ( sk ) ; struct sockaddr_nl * addr = msg -> msg_name ; u32 dst_pid ; u32 dst_group ; struct sk_buff * skb ; int err ; struct scm_cookie scm ; if ( msg -> msg_flags & MSG_OOB ) return - EOPNOTSUPP ; if ( NULL == siocb -> scm ) siocb -> scm = & scm ; <S2SV_StartBug> err = scm_send ( sock , msg , siocb -> scm ) ; <S2SV_EndBug> if ( err < 0 ) return err ; if ( msg -> msg_namelen ) { err = - EINVAL ; if ( addr -> nl_family != AF_NETLINK ) goto out ; dst_pid = addr -> nl_pid ; dst_group = ffs ( addr -> nl_groups ) ; err = - EPERM ; if ( dst_group && ! netlink_capable ( sock , NL_NONROOT_SEND ) ) goto out ; } else { dst_pid = nlk -> dst_pid ; dst_group = nlk -> dst_group ; } if ( ! nlk -> pid ) { err = netlink_autobind ( sock ) ; if ( err ) goto out ; } err = - EMSGSIZE ; if ( len > sk -> sk_sndbuf - 32 ) goto out ; err = - ENOBUFS ; skb = alloc_skb ( len , GFP_KERNEL ) ; if ( skb == NULL ) goto out ; NETLINK_CB ( skb ) . pid = nlk -> pid ; NETLINK_CB ( skb ) . dst_group = dst_group ; memcpy ( NETLINK_CREDS ( skb ) , & siocb -> scm -> creds , sizeof ( struct ucred ) ) ; err = - EFAULT ; if ( memcpy_fromiovec ( skb_put ( skb , len ) , msg -> msg_iov , len ) ) { kfree_skb ( skb ) ; goto out ; } err = security_netlink_send ( sk , skb ) ; if ( err ) { kfree_skb ( skb ) ; goto out ; } if ( dst_group ) { atomic_inc ( & skb -> users ) ; netlink_broadcast ( sk , skb , dst_pid , dst_group , GFP_KERNEL ) ; } err = netlink_unicast ( sk , skb , dst_pid , msg -> msg_flags & MSG_DONTWAIT ) ; out : scm_destroy ( siocb -> scm ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> siocb -> scm , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7528\n\n```\nCWE-125 static Image * ReadVIFFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define VFF_CM_genericRGB 15 # define VFF_CM_ntscRGB 1 # define VFF_CM_NONE 0 # define VFF_DEP_DECORDER 0x4 # define VFF_DEP_NSORDER 0x8 # define VFF_DES_RAW 0 # define VFF_LOC_IMPLICIT 1 # define VFF_MAPTYP_NONE 0 # define VFF_MAPTYP_1_BYTE 1 # define VFF_MAPTYP_2_BYTE 2 # define VFF_MAPTYP_4_BYTE 4 # define VFF_MAPTYP_FLOAT 5 # define VFF_MAPTYP_DOUBLE 7 # define VFF_MS_NONE 0 # define VFF_MS_ONEPERBAND 1 # define VFF_MS_SHARED 3 # define VFF_TYP_BIT 0 # define VFF_TYP_1_BYTE 1 # define VFF_TYP_2_BYTE 2 # define VFF_TYP_4_BYTE 4 # define VFF_TYP_FLOAT 5 # define VFF_TYP_DOUBLE 9 typedef struct _ViffInfo { unsigned char identifier , file_type , release , version , machine_dependency , reserve [ 3 ] ; char comment [ 512 ] ; unsigned int rows , columns , subrows ; int x_offset , y_offset ; float x_bits_per_pixel , y_bits_per_pixel ; unsigned int location_type , location_dimension , number_of_images , number_data_bands , data_storage_type , data_encode_scheme , map_scheme , map_storage_type , map_rows , map_columns , map_subrows , map_enable , maps_per_cycle , color_space_model ; } ViffInfo ; double min_value , scale_factor , value ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register IndexPacket * indexes ; register ssize_t x ; register PixelPacket * q ; register ssize_t i ; register unsigned char * p ; size_t bytes_per_pixel , max_packets , quantum ; ssize_t count , y ; unsigned char * pixels ; unsigned long lsb_first ; ViffInfo viff_info ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 1 , & viff_info . identifier ) ; do { if ( ( count != 1 ) || ( ( unsigned char ) viff_info . identifier != 0xab ) ) ThrowReaderException ( CorruptImageError , \"NotAVIFFImage\" ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . file_type ) , & viff_info . file_type ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . release ) , & viff_info . release ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . version ) , & viff_info . version ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . machine_dependency ) , & viff_info . machine_dependency ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . reserve ) , viff_info . reserve ) ; ( void ) ReadBlob ( image , 512 , ( unsigned char * ) viff_info . comment ) ; viff_info . comment [ 511 ] = '\\\\0' ; if ( strlen ( viff_info . comment ) > 4 ) ( void ) SetImageProperty ( image , \"comment\" , viff_info . comment ) ; if ( ( viff_info . machine_dependency == VFF_DEP_DECORDER ) || ( viff_info . machine_dependency == VFF_DEP_NSORDER ) ) image -> endian = LSBEndian ; else image -> endian = MSBEndian ; viff_info . rows = ReadBlobLong ( image ) ; viff_info . columns = ReadBlobLong ( image ) ; viff_info . subrows = ReadBlobLong ( image ) ; viff_info . x_offset = ( int ) ReadBlobLong ( image ) ; viff_info . y_offset = ( int ) ReadBlobLong ( image ) ; viff_info . x_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . y_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . location_type = ReadBlobLong ( image ) ; viff_info . location_dimension = ReadBlobLong ( image ) ; viff_info . number_of_images = ReadBlobLong ( image ) ; viff_info . number_data_bands = ReadBlobLong ( image ) ; viff_info . data_storage_type = ReadBlobLong ( image ) ; viff_info . data_encode_scheme = ReadBlobLong ( image ) ; viff_info . map_scheme = ReadBlobLong ( image ) ; viff_info . map_storage_type = ReadBlobLong ( image ) ; viff_info . map_rows = ReadBlobLong ( image ) ; viff_info . map_columns = ReadBlobLong ( image ) ; viff_info . map_subrows = ReadBlobLong ( image ) ; viff_info . map_enable = ReadBlobLong ( image ) ; viff_info . maps_per_cycle = ReadBlobLong ( image ) ; viff_info . color_space_model = ReadBlobLong ( image ) ; for ( i = 0 ; i < 420 ; i ++ ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; image -> depth = viff_info . x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH ; number_pixels = ( MagickSizeType ) viff_info . columns * viff_info . rows ; if ( number_pixels != ( size_t ) number_pixels ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( number_pixels == 0 ) ThrowReaderException ( CoderError , \"ImageColumnOrRowSizeIsNotSupported\" ) ; if ( ( viff_info . number_data_bands < 1 ) || ( viff_info . number_data_bands > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( viff_info . data_storage_type != VFF_TYP_BIT ) && ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_2_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_4_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_FLOAT ) && ( viff_info . data_storage_type != VFF_TYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"DataStorageTypeIsNotSupported\" ) ; if ( viff_info . data_encode_scheme != VFF_DES_RAW ) ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; if ( ( viff_info . map_storage_type != VFF_MAPTYP_NONE ) && ( viff_info . map_storage_type != VFF_MAPTYP_1_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_2_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_4_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_FLOAT ) && ( viff_info . map_storage_type != VFF_MAPTYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"MapStorageTypeIsNotSupported\" ) ; if ( ( viff_info . color_space_model != VFF_CM_NONE ) && ( viff_info . color_space_model != VFF_CM_ntscRGB ) && ( viff_info . color_space_model != VFF_CM_genericRGB ) ) ThrowReaderException ( CoderError , \"ColorspaceModelIsNotSupported\" ) ; if ( viff_info . location_type != VFF_LOC_IMPLICIT ) ThrowReaderException ( CoderError , \"LocationTypeIsNotSupported\" ) ; if ( viff_info . number_of_images != 1 ) ThrowReaderException ( CoderError , \"NumberOfImagesIsNotSupported\" ) ; if ( viff_info . map_rows == 0 ) viff_info . map_scheme = VFF_MS_NONE ; switch ( ( int ) viff_info . map_scheme ) { case VFF_MS_NONE : { if ( viff_info . number_data_bands < 3 ) { if ( viff_info . data_storage_type == VFF_TYP_BIT ) image -> colors = 2 ; else if ( viff_info . data_storage_type == VFF_MAPTYP_1_BYTE ) image -> colors = 256UL ; else image -> colors = image -> depth <= 8 ? 256UL : 65536UL ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case VFF_MS_ONEPERBAND : case VFF_MS_SHARED : { unsigned char * viff_colormap ; switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_1_BYTE : bytes_per_pixel = 1 ; break ; case VFF_MAPTYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_MAPTYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } image -> colors = viff_info . map_columns ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( viff_info . map_rows > ( viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ; if ( viff_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ReadBlob ( image , bytes_per_pixel * image -> colors * viff_info . map_rows , viff_colormap ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : { MSBOrderShort ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } case VFF_MAPTYP_4_BYTE : case VFF_MAPTYP_FLOAT : { MSBOrderLong ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } default : break ; } for ( i = 0 ; i < ( ssize_t ) ( viff_info . map_rows * image -> colors ) ; i ++ ) { switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : value = 1.0 * ( ( short * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_4_BYTE : value = 1.0 * ( ( int * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_FLOAT : value = ( ( float * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_DOUBLE : value = ( ( double * ) viff_colormap ) [ i ] ; break ; default : value = 1.0 * viff_colormap [ i ] ; break ; } if ( i < ( ssize_t ) image -> colors ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } else if ( i < ( ssize_t ) ( 2 * image -> colors ) ) image -> colormap [ i % image -> colors ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; else if ( i < ( ssize_t ) ( 3 * image -> colors ) ) image -> colormap [ i % image -> colors ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } viff_colormap = ( unsigned char * ) RelinquishMagickMemory ( viff_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> matte = viff_info . number_data_bands == 4 ? MagickTrue : MagickFalse ; image -> storage_class = ( viff_info . number_data_bands < 3 ? PseudoClass : DirectClass ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_TYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_TYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_TYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } if ( viff_info . data_storage_type == VFF_TYP_BIT ) max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; else max_packets = ( size_t ) ( number_pixels * viff_info . number_data_bands ) ; <S2SV_StartBug> pixels = ( unsigned char * ) AcquireQuantumMemory ( max_packets , <S2SV_EndBug> bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ReadBlob ( image , bytes_per_pixel * max_packets , pixels ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : { MSBOrderShort ( pixels , bytes_per_pixel * max_packets ) ; break ; } case VFF_TYP_4_BYTE : case VFF_TYP_FLOAT : { MSBOrderLong ( pixels , bytes_per_pixel * max_packets ) ; break ; } default : break ; } min_value = 0.0 ; scale_factor = 1.0 ; if ( ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . map_scheme == VFF_MS_NONE ) ) { double max_value ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ 0 ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ 0 ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ 0 ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ 0 ] ; break ; default : value = 1.0 * pixels [ 0 ] ; break ; } max_value = value ; min_value = value ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( value > max_value ) max_value = value ; else if ( value < min_value ) min_value = value ; } if ( ( min_value == 0 ) && ( max_value == 0 ) ) scale_factor = 0 ; else if ( min_value == max_value ) { scale_factor = ( MagickRealType ) QuantumRange / min_value ; min_value = 0 ; } else scale_factor = ( MagickRealType ) QuantumRange / ( max_value - min_value ) ; } p = ( unsigned char * ) pixels ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( viff_info . map_scheme == VFF_MS_NONE ) { value = ( value - min_value ) * scale_factor ; if ( value > QuantumRange ) value = QuantumRange ; else if ( value < 0 ) value = 0 ; } * p = ( unsigned char ) ( ( Quantum ) value ) ; p ++ ; } p = ( unsigned char * ) pixels ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { if ( image -> storage_class != PseudoClass ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) ( image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( q , quantum == 0 ? 0 : QuantumRange ) ; SetPixelGreen ( q , quantum == 0 ? 0 : QuantumRange ) ; SetPixelBlue ( q , quantum == 0 ? 0 : QuantumRange ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( indexes + x + bit , quantum ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( int ) ( image -> columns % 8 ) ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( q , quantum == 0 ? 0 : QuantumRange ) ; SetPixelGreen ( q , quantum == 0 ? 0 : QuantumRange ) ; SetPixelBlue ( q , quantum == 0 ? 0 : QuantumRange ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( indexes + x + bit , quantum ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else if ( image -> storage_class == PseudoClass ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) SetPixelIndex ( indexes + x , * p ++ ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else { number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( q , ScaleCharToQuantum ( * p ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * ( p + number_pixels ) ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( * ( p + 2 * number_pixels ) ) ) ; if ( image -> colors != 0 ) { ssize_t index ; index = ( ssize_t ) GetPixelRed ( q ) ; SetPixelRed ( q , image -> colormap [ ( ssize_t ) ConstrainColormapIndex ( image , index ) ] . red ) ; index = ( ssize_t ) GetPixelGreen ( q ) ; SetPixelGreen ( q , image -> colormap [ ( ssize_t ) ConstrainColormapIndex ( image , index ) ] . green ) ; index = ( ssize_t ) GetPixelRed ( q ) ; SetPixelBlue ( q , image -> colormap [ ( ssize_t ) ConstrainColormapIndex ( image , index ) ] . blue ) ; } SetPixelOpacity ( q , image -> matte != MagickFalse ? QuantumRange - ScaleCharToQuantum ( * ( p + number_pixels * 3 ) ) : OpaqueOpacity ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; count = ReadBlob ( image , 1 , & viff_info . identifier ) ; if ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) AcquireQuantumMemory ( MagickMax ( number_pixels , max_packets ) , <S2SV_ModEnd> bytes_per_pixel * sizeof\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jas_image_t * jpg_decode ( jas_stream_t * in , char * optstr ) { struct jpeg_decompress_struct cinfo ; struct jpeg_error_mgr jerr ; FILE * input_file ; jpg_dest_t dest_mgr_buf ; jpg_dest_t * dest_mgr = & dest_mgr_buf ; JDIMENSION num_scanlines ; jas_image_t * image ; int ret ; jpg_dec_importopts_t opts ; <S2SV_StartBug> size_t size ; <S2SV_EndBug> if ( jpg_dec_parseopts ( optstr , & opts ) ) { goto error ; } memset ( & cinfo , 0 , sizeof ( struct jpeg_decompress_struct ) ) ; memset ( dest_mgr , 0 , sizeof ( jpg_dest_t ) ) ; dest_mgr -> data = 0 ; image = 0 ; input_file = 0 ; if ( ! ( input_file = tmpfile ( ) ) ) { jas_eprintf ( \"cannot<S2SV_blank>make<S2SV_blank>temporary<S2SV_blank>file\\\\n\" ) ; goto error ; } if ( jpg_copystreamtofile ( input_file , in ) ) { jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>stream\\\\n\" ) ; goto error ; } rewind ( input_file ) ; JAS_DBGLOG ( 10 , ( \"jpeg_std_error(%p)\\\\n\" , & jerr ) ) ; cinfo . err = jpeg_std_error ( & jerr ) ; JAS_DBGLOG ( 10 , ( \"jpeg_create_decompress(%p)\\\\n\" , & cinfo ) ) ; jpeg_create_decompress ( & cinfo ) ; JAS_DBGLOG ( 10 , ( \"jpeg_stdio_src(%p,<S2SV_blank>%p)\\\\n\" , & cinfo , input_file ) ) ; jpeg_stdio_src ( & cinfo , input_file ) ; JAS_DBGLOG ( 10 , ( \"jpeg_read_header(%p,<S2SV_blank>TRUE)\\\\n\" , & cinfo ) ) ; ret = jpeg_read_header ( & cinfo , TRUE ) ; JAS_DBGLOG ( 10 , ( \"jpeg_read_header<S2SV_blank>return<S2SV_blank>value<S2SV_blank>%d\\\\n\" , ret ) ) ; if ( ret != JPEG_HEADER_OK ) { jas_eprintf ( \"jpeg_read_header<S2SV_blank>did<S2SV_blank>not<S2SV_blank>return<S2SV_blank>JPEG_HEADER_OK\\\\n\" ) ; } JAS_DBGLOG ( 10 , ( \"header:<S2SV_blank>image_width<S2SV_blank>%d;<S2SV_blank>image_height<S2SV_blank>%d;<S2SV_blank>num_components<S2SV_blank>%d\\\\n\" , cinfo . image_width , cinfo . image_height , cinfo . num_components ) ) ; <S2SV_StartBug> JAS_DBGLOG ( 10 , ( \"jpeg_start_decompress(%p)\\\\n\" , & cinfo ) ) ; <S2SV_EndBug> ret = jpeg_start_decompress ( & cinfo ) ; JAS_DBGLOG ( 10 , ( \"jpeg_start_decompress<S2SV_blank>return<S2SV_blank>value<S2SV_blank>%d\\\\n\" , ret ) ) ; JAS_DBGLOG ( 10 , ( \"header:<S2SV_blank>output_width<S2SV_blank>%d;<S2SV_blank>output_height<S2SV_blank>%d;<S2SV_blank>output_components<S2SV_blank>%d\\\\n\" , cinfo . output_width , cinfo . output_height , cinfo . output_components ) ) ; <S2SV_StartBug> if ( opts . max_size ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! jas_safe_size_mul ( cinfo . output_width , cinfo . output_height , <S2SV_EndBug> & size ) || ! jas_safe_size_mul ( size , cinfo . output_components , & size ) ) { goto error ; } <S2SV_StartBug> if ( size > opts . max_size ) { <S2SV_EndBug> <S2SV_StartBug> jas_eprintf ( \"image<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\\\\n\" ) ; <S2SV_EndBug> goto error ; } <S2SV_StartBug> } <S2SV_EndBug> if ( ! ( image = jpg_mkimage ( & cinfo ) ) ) { jas_eprintf ( \"jpg_mkimage<S2SV_blank>failed\\\\n\" ) ; goto error ; } dest_mgr -> image = image ; if ( ! ( dest_mgr -> data = jas_matrix_create ( 1 , cinfo . output_width ) ) ) { jas_eprintf ( \"jas_matrix_create<S2SV_blank>failed\\\\n\" ) ; goto error ; } dest_mgr -> start_output = jpg_start_output ; dest_mgr -> put_pixel_rows = jpg_put_pixel_rows ; dest_mgr -> finish_output = jpg_finish_output ; dest_mgr -> buffer = ( * cinfo . mem -> alloc_sarray ) ( ( j_common_ptr ) & cinfo , JPOOL_IMAGE , cinfo . output_width * cinfo . output_components , ( JDIMENSION ) 1 ) ; dest_mgr -> buffer_height = 1 ; dest_mgr -> error = 0 ; ( * dest_mgr -> start_output ) ( & cinfo , dest_mgr ) ; while ( cinfo . output_scanline < cinfo . output_height ) { JAS_DBGLOG ( 10 , ( \"jpeg_read_scanlines(%p,<S2SV_blank>%p,<S2SV_blank>%lu)\\\\n\" , & cinfo , dest_mgr -> buffer , JAS_CAST ( unsigned long , dest_mgr -> buffer_height ) ) ) ; num_scanlines = jpeg_read_scanlines ( & cinfo , dest_mgr -> buffer , dest_mgr -> buffer_height ) ; JAS_DBGLOG ( 10 , ( \"jpeg_read_scanlines<S2SV_blank>return<S2SV_blank>value<S2SV_blank>%lu\\\\n\" , JAS_CAST ( unsigned long , num_scanlines ) ) ) ; ( * dest_mgr -> put_pixel_rows ) ( & cinfo , dest_mgr , num_scanlines ) ; } ( * dest_mgr -> finish_output ) ( & cinfo , dest_mgr ) ; JAS_DBGLOG ( 10 , ( \"jpeg_finish_decompress(%p)\\\\n\" , & cinfo ) ) ; jpeg_finish_decompress ( & cinfo ) ; JAS_DBGLOG ( 10 , ( \"jpeg_destroy_decompress(%p)\\\\n\" , & cinfo ) ) ; jpeg_destroy_decompress ( & cinfo ) ; jas_matrix_destroy ( dest_mgr -> data ) ; JAS_DBGLOG ( 10 , ( \"fclose(%p)\\\\n\" , input_file ) ) ; fclose ( input_file ) ; input_file = 0 ; if ( dest_mgr -> error ) { jas_eprintf ( \"error<S2SV_blank>during<S2SV_blank>decoding\\\\n\" ) ; goto error ; } return image ; error : if ( dest_mgr -> data ) { jas_matrix_destroy ( dest_mgr -> data ) ; } if ( image ) { jas_image_destroy ( image ) ; } if ( input_file ) { fclose ( input_file ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> opts ; size_t num_samples ; JAS_DBGLOG ( 100 , ( \"jpg_decode(%p,<S2SV_blank>\\\\\"%s\\\\\")\\\\n\" , in , optstr ) ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) ; <S2SV_ModEnd> if ( opts <S2SV_ModStart> ( opts . max_samples > 0 <S2SV_ModEnd> ) { if <S2SV_ModStart> if ( ! jas_safe_size_mul3 ( cinfo . image_width , cinfo . image_height , cinfo . num_components , & num_samples <S2SV_ModEnd> ) ) { <S2SV_ModStart> } if ( num_samples <S2SV_ModEnd> > opts . <S2SV_ModStart> > opts . max_samples <S2SV_ModEnd> ) { jas_eprintf <S2SV_ModStart> { jas_eprintf ( \"image<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%zu<S2SV_blank>><S2SV_blank>%zu)\\\\n\" , num_samples , opts . max_samples <S2SV_ModEnd> ) ; goto <S2SV_ModStart> ; } } JAS_DBGLOG ( 10 , ( \"jpeg_start_decompress(%p)\\\\n\" , & cinfo ) ) ; ret = jpeg_start_decompress ( & cinfo ) ; JAS_DBGLOG ( 10 , ( \"jpeg_start_decompress<S2SV_blank>return<S2SV_blank>value<S2SV_blank>%d\\\\n\" , ret ) ) ; JAS_DBGLOG ( 10 , ( \"header:<S2SV_blank>output_width<S2SV_blank>%d;<S2SV_blank>output_height<S2SV_blank>%d;<S2SV_blank>output_components<S2SV_blank>%d\\\\n\" , cinfo . output_width , cinfo . output_height , cinfo . output_components ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2546\n\n```\nCWE-362 static int snd_timer_user_tselect ( struct file * file , struct snd_timer_select __user * _tselect ) { struct snd_timer_user * tu ; struct snd_timer_select tselect ; char str [ 32 ] ; int err = 0 ; tu = file -> private_data ; <S2SV_StartBug> mutex_lock ( & tu -> tread_sem ) ; <S2SV_EndBug> if ( tu -> timeri ) { snd_timer_close ( tu -> timeri ) ; tu -> timeri = NULL ; } if ( copy_from_user ( & tselect , _tselect , sizeof ( tselect ) ) ) { err = - EFAULT ; goto __err ; } sprintf ( str , \"application<S2SV_blank>%i\" , current -> pid ) ; if ( tselect . id . dev_class != SNDRV_TIMER_CLASS_SLAVE ) tselect . id . dev_sclass = SNDRV_TIMER_SCLASS_APPLICATION ; err = snd_timer_open ( & tu -> timeri , str , & tselect . id , current -> pid ) ; if ( err < 0 ) goto __err ; kfree ( tu -> queue ) ; tu -> queue = NULL ; kfree ( tu -> tqueue ) ; tu -> tqueue = NULL ; if ( tu -> tread ) { tu -> tqueue = kmalloc ( tu -> queue_size * sizeof ( struct snd_timer_tread ) , GFP_KERNEL ) ; if ( tu -> tqueue == NULL ) err = - ENOMEM ; } else { tu -> queue = kmalloc ( tu -> queue_size * sizeof ( struct snd_timer_read ) , GFP_KERNEL ) ; if ( tu -> queue == NULL ) err = - ENOMEM ; } if ( err < 0 ) { snd_timer_close ( tu -> timeri ) ; tu -> timeri = NULL ; } else { tu -> timeri -> flags |= SNDRV_TIMER_IFLG_FAST ; tu -> timeri -> callback = tu -> tread ? snd_timer_user_tinterrupt : snd_timer_user_interrupt ; tu -> timeri -> ccallback = snd_timer_user_ccallback ; tu -> timeri -> callback_data = ( void * ) tu ; } __err : <S2SV_StartBug> mutex_unlock ( & tu -> tread_sem ) ; <S2SV_EndBug> return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private_data ; <S2SV_ModEnd> if ( tu <S2SV_ModStart> } __err : <S2SV_ModEnd> return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13225\n\n```\nCWE-476 static int compile_length_bag_node ( BagNode * node , regex_t * reg ) { int len ; int tlen ; if ( node -> type == BAG_OPTION ) return compile_length_option_node ( node , reg ) ; if ( NODE_BAG_BODY ( node ) ) { tlen = compile_length_tree ( NODE_BAG_BODY ( node ) , reg ) ; if ( tlen < 0 ) return tlen ; } else tlen = 0 ; switch ( node -> type ) { case BAG_MEMORY : # ifdef USE_CALL if ( node -> m . regnum == 0 && NODE_IS_CALLED ( node ) ) { len = tlen + SIZE_OP_CALL + SIZE_OP_JUMP + SIZE_OP_RETURN ; return len ; } if ( NODE_IS_CALLED ( node ) ) { len = SIZE_OP_MEMORY_START_PUSH + tlen + SIZE_OP_CALL + SIZE_OP_JUMP + SIZE_OP_RETURN ; if ( MEM_STATUS_AT0 ( reg -> bt_mem_end , node -> m . regnum ) ) len += ( NODE_IS_RECURSION ( node ) ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_PUSH ) ; else len += ( NODE_IS_RECURSION ( node ) ? SIZE_OP_MEMORY_END_REC : SIZE_OP_MEMORY_END ) ; } else if ( NODE_IS_RECURSION ( node ) ) { len = SIZE_OP_MEMORY_START_PUSH ; len += tlen + ( MEM_STATUS_AT0 ( reg -> bt_mem_end , node -> m . regnum ) ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_REC ) ; } else # endif { if ( MEM_STATUS_AT0 ( reg -> bt_mem_start , node -> m . regnum ) ) len = SIZE_OP_MEMORY_START_PUSH ; else len = SIZE_OP_MEMORY_START ; len += tlen + ( MEM_STATUS_AT0 ( reg -> bt_mem_end , node -> m . regnum ) ? SIZE_OP_MEMORY_END_PUSH : SIZE_OP_MEMORY_END ) ; } break ; case BAG_STOP_BACKTRACK : if ( NODE_IS_STOP_BT_SIMPLE_REPEAT ( node ) ) { int v ; QuantNode * qn ; qn = QUANT_ ( NODE_BAG_BODY ( node ) ) ; tlen = compile_length_tree ( NODE_QUANT_BODY ( qn ) , reg ) ; if ( tlen < 0 ) return tlen ; v = onig_positive_int_multiply ( qn -> lower , tlen ) ; if ( v < 0 ) return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE ; len = v + SIZE_OP_PUSH + tlen + SIZE_OP_POP_OUT + SIZE_OP_JUMP ; } else { len = SIZE_OP_ATOMIC_START + tlen + SIZE_OP_ATOMIC_END ; } break ; case BAG_IF_ELSE : { Node * cond = NODE_BAG_BODY ( node ) ; Node * Then = node -> te . Then ; Node * Else = node -> te . Else ; len = compile_length_tree ( cond , reg ) ; if ( len < 0 ) return len ; len += SIZE_OP_PUSH ; len += SIZE_OP_ATOMIC_START + SIZE_OP_ATOMIC_END ; if ( IS_NOT_NULL ( Then ) ) { tlen = compile_length_tree ( Then , reg ) ; if ( tlen < 0 ) return tlen ; len += tlen ; } <S2SV_StartBug> if ( IS_NOT_NULL ( Else ) ) { <S2SV_EndBug> <S2SV_StartBug> len += SIZE_OP_JUMP ; <S2SV_EndBug> tlen = compile_length_tree ( Else , reg ) ; if ( tlen < 0 ) return tlen ; len += tlen ; } } break ; case BAG_OPTION : len = 0 ; break ; } return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tlen ; } len += SIZE_OP_JUMP + SIZE_OP_ATOMIC_END ; <S2SV_ModStart> ) ) { <S2SV_ModEnd> tlen = compile_length_tree\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 void vlan_setup ( struct net_device * dev ) { ether_setup ( dev ) ; dev -> priv_flags |= IFF_802_1Q_VLAN ; <S2SV_StartBug> dev -> priv_flags &= ~ IFF_XMIT_DST_RELEASE ; <S2SV_EndBug> dev -> tx_queue_len = 0 ; dev -> netdev_ops = & vlan_netdev_ops ; dev -> destructor = free_netdev ; dev -> ethtool_ops = & vlan_ethtool_ops ; memset ( dev -> broadcast , 0 , ETH_ALEN ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> priv_flags &= ~ ( IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING ) <S2SV_ModEnd> ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16529\n\n```\nCWE-125 static int snd_usb_create_streams ( struct snd_usb_audio * chip , int ctrlif ) { struct usb_device * dev = chip -> dev ; struct usb_host_interface * host_iface ; struct usb_interface_descriptor * altsd ; void * control_header ; <S2SV_StartBug> int i , protocol ; <S2SV_EndBug> host_iface = & usb_ifnum_to_if ( dev , ctrlif ) -> altsetting [ 0 ] ; control_header = snd_usb_find_csint_desc ( host_iface -> extra , host_iface -> extralen , NULL , UAC_HEADER ) ; altsd = get_iface_desc ( host_iface ) ; protocol = altsd -> bInterfaceProtocol ; if ( ! control_header ) { dev_err ( & dev -> dev , \"cannot<S2SV_blank>find<S2SV_blank>UAC_HEADER\\\\n\" ) ; return - EINVAL ; } <S2SV_StartBug> switch ( protocol ) { <S2SV_EndBug> default : dev_warn ( & dev -> dev , \"unknown<S2SV_blank>interface<S2SV_blank>protocol<S2SV_blank>%#02x,<S2SV_blank>assuming<S2SV_blank>v1\\\\n\" , protocol ) ; case UAC_VERSION_1 : { struct uac1_ac_header_descriptor * h1 = control_header ; <S2SV_StartBug> if ( ! h1 -> bInCollection ) { <S2SV_EndBug> <S2SV_StartBug> dev_info ( & dev -> dev , \"skipping<S2SV_blank>empty<S2SV_blank>audio<S2SV_blank>interface<S2SV_blank>(v1)\\\\n\" ) ; <S2SV_EndBug> return - EINVAL ; } if ( h1 -> bLength < sizeof ( * h1 ) + h1 -> bInCollection ) { dev_err ( & dev -> dev , \"invalid<S2SV_blank>UAC_HEADER<S2SV_blank>(v1)\\\\n\" ) ; return - EINVAL ; } for ( i = 0 ; i < h1 -> bInCollection ; i ++ ) snd_usb_create_stream ( chip , ctrlif , h1 -> baInterfaceNr [ i ] ) ; break ; } case UAC_VERSION_2 : { struct usb_interface_assoc_descriptor * assoc = usb_ifnum_to_if ( dev , ctrlif ) -> intf_assoc ; if ( ! assoc ) { struct usb_interface * iface = usb_ifnum_to_if ( dev , ctrlif + 1 ) ; if ( iface && iface -> intf_assoc && iface -> intf_assoc -> bFunctionClass == USB_CLASS_AUDIO && iface -> intf_assoc -> bFunctionProtocol == UAC_VERSION_2 ) assoc = iface -> intf_assoc ; } if ( ! assoc ) { dev_err ( & dev -> dev , \"Audio<S2SV_blank>class<S2SV_blank>v2<S2SV_blank>interfaces<S2SV_blank>need<S2SV_blank>an<S2SV_blank>interface<S2SV_blank>association\\\\n\" ) ; return - EINVAL ; } for ( i = 0 ; i < assoc -> bInterfaceCount ; i ++ ) { int intf = assoc -> bFirstInterface + i ; if ( intf != ctrlif ) snd_usb_create_stream ( chip , ctrlif , intf ) ; } break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i , protocol ; int rest_bytes <S2SV_ModStart> EINVAL ; } rest_bytes = ( void * ) ( host_iface -> extra + host_iface -> extralen ) - control_header ; if ( rest_bytes <= 0 ) { dev_err ( & dev -> dev , \"invalid<S2SV_blank>control<S2SV_blank>header\\\\n\" ) ; return - EINVAL ; } <S2SV_ModStart> ; if ( rest_bytes < sizeof ( * h1 ) ) { dev_err ( & dev -> dev , \"too<S2SV_blank>short<S2SV_blank>v1<S2SV_blank>buffer<S2SV_blank>descriptor\\\\n\" ) ; return - EINVAL ; } if ( <S2SV_ModStart> dev , \"skipping<S2SV_blank>empty<S2SV_blank>audio<S2SV_blank>interface<S2SV_blank>(v1)\\\\n\" ) ; return - EINVAL ; } if ( rest_bytes < h1 -> bLength ) { dev_err ( & dev -> dev , \"invalid<S2SV_blank>buffer<S2SV_blank>length<S2SV_blank>(v1)\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15090\n\n```\nCWE-125 void qedi_dbg_info ( struct qedi_dbg_ctx * qedi , const char * func , u32 line , u32 level , const char * fmt , ... ) { va_list va ; <S2SV_StartBug> struct va_format vaf ; <S2SV_EndBug> char nfunc [ 32 ] ; memset ( nfunc , 0 , sizeof ( nfunc ) ) ; memcpy ( nfunc , func , sizeof ( nfunc ) - 1 ) ; va_start ( va , fmt ) ; vaf . fmt = fmt ; vaf . va = & va ; if ( ! ( qedi_dbg_log & level ) ) goto ret ; if ( likely ( qedi ) && likely ( qedi -> pdev ) ) pr_info ( \"[%s]:[%s:%d]:%d:<S2SV_blank>%pV\" , dev_name ( & qedi -> pdev -> dev ) , <S2SV_StartBug> nfunc , line , qedi -> host_no , & vaf ) ; <S2SV_EndBug> else <S2SV_StartBug> pr_info ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , nfunc , line , & vaf ) ; <S2SV_EndBug> ret : va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct va_format vaf <S2SV_ModEnd> ; va_start ( <S2SV_ModStart> dev ) , func <S2SV_ModEnd> , line , <S2SV_ModStart> ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , func <S2SV_ModEnd> , line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4348\n\n```\nCWE-362 int sctp_rcv ( struct sk_buff * skb ) { struct sock * sk ; struct sctp_association * asoc ; struct sctp_endpoint * ep = NULL ; struct sctp_ep_common * rcvr ; struct sctp_transport * transport = NULL ; struct sctp_chunk * chunk ; struct sctphdr * sh ; union sctp_addr src ; union sctp_addr dest ; int family ; struct sctp_af * af ; if ( skb -> pkt_type != PACKET_HOST ) goto discard_it ; SCTP_INC_STATS_BH ( SCTP_MIB_INSCTPPACKS ) ; if ( skb_linearize ( skb ) ) goto discard_it ; sh = sctp_hdr ( skb ) ; __skb_pull ( skb , skb_transport_offset ( skb ) ) ; if ( skb -> len < sizeof ( struct sctphdr ) ) goto discard_it ; if ( ! skb_csum_unnecessary ( skb ) && sctp_rcv_checksum ( skb ) < 0 ) goto discard_it ; skb_pull ( skb , sizeof ( struct sctphdr ) ) ; if ( skb -> len < sizeof ( struct sctp_chunkhdr ) ) goto discard_it ; family = ipver2af ( ip_hdr ( skb ) -> version ) ; af = sctp_get_af_specific ( family ) ; if ( unlikely ( ! af ) ) goto discard_it ; af -> from_skb ( & src , skb , 1 ) ; af -> from_skb ( & dest , skb , 0 ) ; if ( ! af -> addr_valid ( & src , NULL , skb ) || ! af -> addr_valid ( & dest , NULL , skb ) ) goto discard_it ; asoc = __sctp_rcv_lookup ( skb , & src , & dest , & transport ) ; if ( ! asoc ) ep = __sctp_rcv_lookup_endpoint ( & dest ) ; rcvr = asoc ? & asoc -> base : & ep -> base ; sk = rcvr -> sk ; if ( sk -> sk_bound_dev_if && ( sk -> sk_bound_dev_if != af -> skb_iif ( skb ) ) ) { if ( asoc ) { sctp_association_put ( asoc ) ; asoc = NULL ; } else { sctp_endpoint_put ( ep ) ; ep = NULL ; } sk = sctp_get_ctl_sock ( ) ; ep = sctp_sk ( sk ) -> ep ; sctp_endpoint_hold ( ep ) ; rcvr = & ep -> base ; } if ( ! asoc ) { if ( sctp_rcv_ootb ( skb ) ) { SCTP_INC_STATS_BH ( SCTP_MIB_OUTOFBLUES ) ; goto discard_release ; } } if ( ! xfrm_policy_check ( sk , XFRM_POLICY_IN , skb , family ) ) goto discard_release ; nf_reset ( skb ) ; if ( sk_filter ( sk , skb ) ) goto discard_release ; chunk = sctp_chunkify ( skb , asoc , sk ) ; if ( ! chunk ) goto discard_release ; SCTP_INPUT_CB ( skb ) -> chunk = chunk ; chunk -> rcvr = rcvr ; chunk -> sctp_hdr = sh ; sctp_init_addrs ( chunk , & src , & dest ) ; chunk -> transport = transport ; sctp_bh_lock_sock ( sk ) ; <S2SV_StartBug> if ( sock_owned_by_user ( sk ) ) { <S2SV_EndBug> SCTP_INC_STATS_BH ( SCTP_MIB_IN_PKT_BACKLOG ) ; sctp_add_backlog ( sk , skb ) ; } else { SCTP_INC_STATS_BH ( SCTP_MIB_IN_PKT_SOFTIRQ ) ; sctp_inq_push ( & chunk -> rcvr -> inqueue , chunk ) ; } sctp_bh_unlock_sock ( sk ) ; if ( asoc ) sctp_association_put ( asoc ) ; else sctp_endpoint_put ( ep ) ; return 0 ; discard_it : SCTP_INC_STATS_BH ( SCTP_MIB_IN_PKT_DISCARDS ) ; kfree_skb ( skb ) ; return 0 ; discard_release : if ( asoc ) sctp_association_put ( asoc ) ; else sctp_endpoint_put ( ep ) ; goto discard_it ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( sk != rcvr -> sk ) { sctp_bh_unlock_sock ( sk ) ; sk = rcvr -> sk ; sctp_bh_lock_sock ( sk ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 void Com_WriteConfig_f ( void ) { char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { <S2SV_StartBug> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; <S2SV_EndBug> return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; COM_DefaultExtension ( filename , sizeof ( filename ) , \".cfg\" ) ; Com_Printf ( \"Writing<S2SV_blank>%s.\\\\n\" , filename ) ; Com_WriteConfigToFile ( filename ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; return ; } if ( ! COM_CompareExtension ( filename , \".cfg\" ) ) { Com_Printf ( \"Com_WriteConfig_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".cfg\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horDiff32 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { TIFFPredictorState * sp = PredictorState ( tif ) ; tmsize_t stride = sp -> stride ; uint32 * wp = ( uint32 * ) cp0 ; tmsize_t wc = cc / 4 ; <S2SV_StartBug> assert ( ( cc % ( 4 * stride ) ) == 0 ) ; <S2SV_EndBug> if ( wc > stride ) { wc -= stride ; wp += wc - 1 ; do { REPEAT4 ( stride , wp [ stride ] -= wp [ 0 ] ; wp -- ) wc -= stride ; } while ( wc > 0 ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horDiff32 ( TIFF <S2SV_ModStart> / 4 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horDiff32\" , \"%s\" , \"(cc%(4*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( wc <S2SV_ModStart> ) ; } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20458\n\n```\nCWE-125 struct r_bin_dyldcache_obj_t * r_bin_dyldcache_from_bytes_new ( const ut8 * buf , ut64 size ) { <S2SV_StartBug> struct r_bin_dyldcache_obj_t * bin ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( bin = malloc ( sizeof ( struct r_bin_dyldcache_obj_t ) ) ) ) { <S2SV_EndBug> return NULL ; } <S2SV_StartBug> memset ( bin , 0 , sizeof ( struct r_bin_dyldcache_obj_t ) ) ; <S2SV_EndBug> if ( ! buf ) { return r_bin_dyldcache_free ( bin ) ; } bin -> b = r_buf_new ( ) ; <S2SV_StartBug> if ( ! r_buf_set_bytes ( bin -> b , buf , size ) ) { <S2SV_EndBug> return r_bin_dyldcache_free ( bin ) ; } if ( ! r_bin_dyldcache_init ( bin ) ) { return r_bin_dyldcache_free ( bin ) ; } bin -> size = size ; return bin ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> r_bin_dyldcache_obj_t * bin = R_NEW0 ( struct r_bin_dyldcache_obj_t ) <S2SV_ModStart> if ( ! bin <S2SV_ModEnd> ) { return <S2SV_ModStart> NULL ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> ; if ( ! bin -> b ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7875\n\n```\nCWE-787 char * enl_ipc_get ( const char * msg_data ) { static char * message = NULL ; <S2SV_StartBug> static unsigned short len = 0 ; <S2SV_EndBug> char buff [ 13 ] , * ret_msg = NULL ; register unsigned char i ; unsigned char blen ; if ( msg_data == IPC_TIMEOUT ) { return ( IPC_TIMEOUT ) ; } for ( i = 0 ; i < 12 ; i ++ ) { buff [ i ] = msg_data [ i ] ; } buff [ 12 ] = 0 ; blen = strlen ( buff ) ; if ( message != NULL ) { len += blen ; message = ( char * ) erealloc ( message , len + 1 ) ; strcat ( message , buff ) ; } else { len = blen ; message = ( char * ) emalloc ( len + 1 ) ; strcpy ( message , buff ) ; } if ( blen < 12 ) { ret_msg = message ; message = NULL ; D ( ( \"Received<S2SV_blank>complete<S2SV_blank>reply:<S2SV_blank><S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , ret_msg ) ) ; } return ( ret_msg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; static size_t <S2SV_ModEnd> len = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17806\n\n```\nCWE-787 <S2SV_StartBug> static int shash_no_setkey ( struct crypto_shash * tfm , const u8 * key , <S2SV_EndBug> unsigned int keylen ) { return - ENOSYS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> int shash_no_setkey (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_tile_init ( TileInfo * tile , const VP9_COMMON * cm , int row , int col ) { <S2SV_StartBug> tile -> mi_row_start = get_tile_offset ( row , cm -> mi_rows , cm -> log2_tile_rows ) ; <S2SV_EndBug> tile -> mi_row_end = get_tile_offset ( row + 1 , cm -> mi_rows , cm -> log2_tile_rows ) ; tile -> mi_col_start = get_tile_offset ( col , cm -> mi_cols , cm -> log2_tile_cols ) ; tile -> mi_col_end = get_tile_offset ( col + 1 , cm -> mi_cols , cm -> log2_tile_cols ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> col ) { vp9_tile_set_row ( tile , cm , row ) ; vp9_tile_set_col ( tile , cm , col <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static double get_rate_correction_factor ( const VP9_COMP * cpi ) { <S2SV_EndBug> if ( cpi -> common . frame_type == KEY_FRAME ) { <S2SV_StartBug> return cpi -> rc . key_frame_rate_correction_factor ; <S2SV_EndBug> } else { if ( ( cpi -> refresh_alt_ref_frame || cpi -> refresh_golden_frame ) && <S2SV_StartBug> ! cpi -> rc . is_src_frame_alt_ref && <S2SV_EndBug> <S2SV_StartBug> ! ( cpi -> use_svc && cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) ) <S2SV_EndBug> return cpi -> rc . gf_rate_correction_factor ; else return cpi -> rc . rate_correction_factor ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi ) { const RATE_CONTROL * const rc = & cpi -> rc ; double rcf ; <S2SV_ModStart> KEY_FRAME ) { rcf = rc -> rate_correction_factors [ KF_STD ] ; } else if ( cpi -> oxcf . pass == 2 ) { RATE_FACTOR_LEVEL rf_lvl = cpi -> twopass . gf_group . rf_level [ cpi -> twopass . gf_group . index ] ; rcf = rc -> rate_correction_factors [ rf_lvl ] <S2SV_ModEnd> ; } else <S2SV_ModStart> ) && ! rc -> <S2SV_ModEnd> is_src_frame_alt_ref && ! <S2SV_ModStart> is_src_frame_alt_ref && ! <S2SV_ModEnd> cpi -> use_svc <S2SV_ModStart> -> use_svc && ( <S2SV_ModStart> -> oxcf . rc_mode != VPX_CBR || cpi -> oxcf . gf_cbr_boost_pct > 20 ) ) rcf = rc -> rate_correction_factors [ GF_ARF_STD ] ; else rcf = rc -> rate_correction_factors [ INTER_NORMAL ] ; } rcf *= rcf_mult [ rc -> frame_size_selector ] ; return fclamp ( rcf , MIN_BPB_FACTOR , MAX_BPB_FACTOR ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16644\n\n```\nCWE-119 static Image * ReadDCMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowDCMException ( exception , message ) { if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; if ( stream_info != ( DCMStreamInfo * ) NULL ) stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; ThrowReaderException ( ( exception ) , ( message ) ) ; } <S2SV_EndBug> char explicit_vr [ MagickPathExtent ] , implicit_vr [ MagickPathExtent ] , magick [ MagickPathExtent ] , photometric [ MagickPathExtent ] ; DCMInfo info ; DCMStreamInfo * stream_info ; Image * image ; int * bluemap , datum , * greenmap , * graymap , * redmap ; MagickBooleanType explicit_file , explicit_retry , use_explicit ; MagickOffsetType offset ; register unsigned char * p ; register ssize_t i ; size_t colors , height , length , number_scenes , quantum , status , width ; ssize_t count , scene ; unsigned char * data ; unsigned short group , element ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 8UL ; image -> endian = LSBEndian ; ( void ) memset ( & info , 0 , sizeof ( info ) ) ; data = ( unsigned char * ) NULL ; graymap = ( int * ) NULL ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; stream_info = ( DCMStreamInfo * ) AcquireMagickMemory ( sizeof ( * stream_info ) ) ; if ( stream_info == ( DCMStreamInfo * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( stream_info , 0 , sizeof ( * stream_info ) ) ; count = ReadBlob ( image , 128 , ( unsigned char * ) magick ) ; if ( count != 128 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) magick ) ; if ( ( count != 4 ) || ( LocaleNCompare ( magick , \"DICM\" , 4 ) != 0 ) ) { offset = SeekBlob ( image , 0L , SEEK_SET ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickString ( photometric , \"MONOCHROME1<S2SV_blank>\" , MagickPathExtent ) ; info . bits_allocated = 8 ; info . bytes_per_pixel = 1 ; info . depth = 8 ; info . mask = 0xffff ; info . max_value = 255UL ; info . samples_per_pixel = 1 ; info . signed_data = ( ~ 0UL ) ; info . rescale_slope = 1.0 ; data = ( unsigned char * ) NULL ; element = 0 ; explicit_vr [ 2 ] = '\\\\0' ; explicit_file = MagickFalse ; colors = 0 ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; graymap = ( int * ) NULL ; height = 0 ; number_scenes = 1 ; use_explicit = MagickFalse ; explicit_retry = MagickFalse ; width = 0 ; while ( TellBlob ( image ) < ( MagickOffsetType ) GetBlobSize ( image ) ) { for ( group = 0 ; ( group != 0x7FE0 ) || ( element != 0x0010 ) ; ) { image -> offset = ( ssize_t ) TellBlob ( image ) ; group = ReadBlobLSBShort ( image ) ; element = ReadBlobLSBShort ( image ) ; if ( ( group == 0xfffc ) && ( element == 0xfffc ) ) break ; if ( ( group != 0x0002 ) && ( image -> endian == MSBEndian ) ) { group = ( unsigned short ) ( ( group << 8 ) | ( ( group >> 8 ) & 0xFF ) ) ; element = ( unsigned short ) ( ( element << 8 ) | ( ( element >> 8 ) & 0xFF ) ) ; } quantum = 0 ; for ( i = 0 ; dicom_info [ i ] . group < 0xffff ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) CopyMagickString ( implicit_vr , dicom_info [ i ] . vr , MagickPathExtent ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) explicit_vr ) ; if ( count != 2 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( explicit_file == MagickFalse ) && ( group != 0x0002 ) ) explicit_file = ( isupper ( ( unsigned char ) * explicit_vr ) != MagickFalse ) && ( isupper ( ( unsigned char ) * ( explicit_vr + 1 ) ) != MagickFalse ) ? MagickTrue : MagickFalse ; use_explicit = ( ( group == 0x0002 ) && ( explicit_retry == MagickFalse ) ) || ( explicit_file != MagickFalse ) ? MagickTrue : MagickFalse ; if ( ( use_explicit != MagickFalse ) && ( strncmp ( implicit_vr , \"xs\" , 2 ) == 0 ) ) ( void ) CopyMagickString ( implicit_vr , explicit_vr , MagickPathExtent ) ; if ( ( use_explicit == MagickFalse ) || ( strncmp ( implicit_vr , \"!!\" , 2 ) == 0 ) ) { offset = SeekBlob ( image , ( MagickOffsetType ) - 2 , SEEK_CUR ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; quantum = 4 ; } else { quantum = 2 ; if ( ( strncmp ( explicit_vr , \"OB\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"UN\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"SQ\" , 2 ) == 0 ) ) { ( void ) ReadBlobLSBShort ( image ) ; quantum = 4 ; } } datum = 0 ; if ( quantum == 4 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( quantum == 2 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } quantum = 0 ; length = 1 ; if ( datum != 0 ) { if ( ( strncmp ( implicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SS\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"US\" , 2 ) == 0 ) ) quantum = 2 ; else if ( ( strncmp ( implicit_vr , \"FL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"OF\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"UL\" , 2 ) == 0 ) ) quantum = 4 ; else if ( strncmp ( implicit_vr , \"FD\" , 2 ) == 0 ) quantum = 8 ; else quantum = 1 ; if ( datum != ~ 0 ) length = ( size_t ) datum / quantum ; else { quantum = 0 ; length = 0 ; } } if ( image_info -> verbose != MagickFalse ) { if ( use_explicit == MagickFalse ) explicit_vr [ 0 ] = '\\\\0' ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) FormatLocaleFile ( stdout , \"0x%04lX<S2SV_blank>%4ld<S2SV_blank>%s-%s<S2SV_blank>(0x%04lx,0x%04lx)\" , ( unsigned long ) image -> offset , ( long ) length , implicit_vr , explicit_vr , ( unsigned long ) group , ( unsigned long ) element ) ; if ( dicom_info [ i ] . description != ( char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"<S2SV_blank>%s\" , dicom_info [ i ] . description ) ; ( void ) FormatLocaleFile ( stdout , \":<S2SV_blank>\" ) ; } if ( ( group == 0x7FE0 ) && ( element == 0x0010 ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; break ; } data = ( unsigned char * ) NULL ; if ( ( length == 1 ) && ( quantum == 1 ) ) datum = ReadBlobByte ( image ) ; else if ( ( length == 1 ) && ( quantum == 2 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } else if ( ( length == 1 ) && ( quantum == 4 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( ( quantum != 0 ) && ( length != 0 ) ) { if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ~ length >= 1 ) data = ( unsigned char * ) AcquireQuantumMemory ( length + 1 , quantum * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) quantum * length , data ) ; if ( count != ( ssize_t ) ( quantum * length ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"count=%d<S2SV_blank>quantum=%d<S2SV_blank>\" \"length=%d<S2SV_blank>group=%d\\\\n\" , ( int ) count , ( int ) quantum , ( int ) length , ( int ) group ) ; ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } data [ length * quantum ] = '\\\\0' ; } if ( ( ( ( unsigned int ) group << 16 ) | element ) == 0xFFFEE0DD ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; continue ; } switch ( group ) { case 0x0002 : { switch ( element ) { case 0x0010 : { char transfer_syntax [ MagickPathExtent ] ; if ( ( datum == 0 ) && ( explicit_retry == MagickFalse ) ) { explicit_retry = MagickTrue ; ( void ) SeekBlob ( image , ( MagickOffsetType ) 0 , SEEK_SET ) ; group = 0 ; element = 0 ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"Corrupted<S2SV_blank>image<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>explicit<S2SV_blank>format\\\\n\" ) ; break ; } * transfer_syntax = '\\\\0' ; if ( data != ( unsigned char * ) NULL ) ( void ) CopyMagickString ( transfer_syntax , ( char * ) data , MagickPathExtent ) ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"transfer_syntax=%s\\\\n\" , ( const char * ) transfer_syntax ) ; if ( strncmp ( transfer_syntax , \"1.2.840.10008.1.2\" , 17 ) == 0 ) { int subtype , type ; type = 1 ; subtype = 0 ; if ( strlen ( transfer_syntax ) > 17 ) { count = ( ssize_t ) sscanf ( transfer_syntax + 17 , \".%d.%d\" , & type , & subtype ) ; if ( count < 1 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } switch ( type ) { case 1 : { image -> endian = LSBEndian ; break ; } case 2 : { image -> endian = MSBEndian ; break ; } case 4 : { if ( ( subtype >= 80 ) && ( subtype <= 81 ) ) image -> compression = JPEGCompression ; else if ( ( subtype >= 90 ) && ( subtype <= 93 ) ) image -> compression = JPEG2000Compression ; else image -> compression = JPEGCompression ; break ; } case 5 : { image -> compression = RLECompression ; break ; } } } break ; } default : break ; } break ; } case 0x0028 : { switch ( element ) { case 0x0002 : { info . samples_per_pixel = ( size_t ) datum ; if ( ( info . samples_per_pixel == 0 ) || ( info . samples_per_pixel > 4 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; } case 0x0004 : { if ( data == ( unsigned char * ) NULL ) break ; for ( i = 0 ; i < ( ssize_t ) MagickMin ( length , MagickPathExtent - 1 ) ; i ++ ) photometric [ i ] = ( char ) data [ i ] ; photometric [ i ] = '\\\\0' ; info . polarity = LocaleCompare ( photometric , \"MONOCHROME1<S2SV_blank>\" ) == 0 ? MagickTrue : MagickFalse ; break ; } case 0x0006 : { if ( datum == 1 ) image -> interlace = PlaneInterlace ; break ; } case 0x0008 : { if ( data == ( unsigned char * ) NULL ) break ; number_scenes = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x0010 : { height = ( size_t ) datum ; break ; } case 0x0011 : { width = ( size_t ) datum ; break ; } case 0x0100 : { info . bits_allocated = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( datum > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . bits_allocated ; if ( ( info . depth == 0 ) || ( info . depth > 32 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . bits_allocated ) - 1 ; image -> depth = info . depth ; break ; } case 0x0101 : { info . significant_bits = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( info . significant_bits > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . significant_bits ; if ( ( info . depth == 0 ) || ( info . depth > 16 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . significant_bits ) - 1 ; info . mask = ( size_t ) GetQuantumRange ( info . significant_bits ) ; image -> depth = info . depth ; break ; } case 0x0102 : { break ; } case 0x0103 : { info . signed_data = ( size_t ) datum ; break ; } case 0x1050 : { if ( data != ( unsigned char * ) NULL ) info . window_center = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1051 : { if ( data != ( unsigned char * ) NULL ) info . window_width = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1052 : { if ( data != ( unsigned char * ) NULL ) info . rescale_intercept = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1053 : { if ( data != ( unsigned char * ) NULL ) info . rescale_slope = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1200 : case 0x3006 : { if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / info . bytes_per_pixel ) ; datum = ( int ) colors ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; graymap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * graymap ) ) ; if ( graymap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( graymap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * graymap ) ) ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) if ( info . bytes_per_pixel == 1 ) graymap [ i ] = ( int ) data [ i ] ; else graymap [ i ] = ( int ) ( ( short * ) data ) [ i ] ; break ; } case 0x1201 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; redmap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * redmap ) ) ; if ( redmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( redmap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * redmap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; redmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1202 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; greenmap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * greenmap ) ) ; if ( greenmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( greenmap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * greenmap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; greenmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1203 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; bluemap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * bluemap ) ) ; if ( bluemap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( bluemap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * bluemap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; bluemap [ i ] = ( int ) index ; p += 2 ; } break ; } default : break ; } break ; } case 0x2050 : { switch ( element ) { case 0x0020 : { if ( ( data != ( unsigned char * ) NULL ) && ( strncmp ( ( char * ) data , \"INVERSE\" , 7 ) == 0 ) ) info . polarity = MagickTrue ; break ; } default : break ; } break ; } default : break ; } if ( data != ( unsigned char * ) NULL ) { char * attribute ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; if ( dicom_info [ i ] . description != ( char * ) NULL ) { attribute = AcquireString ( \"dcm:\" ) ; ( void ) ConcatenateString ( & attribute , dicom_info [ i ] . description ) ; for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i == ( ssize_t ) length ) || ( length > 4 ) ) { ( void ) SubstituteString ( & attribute , \"<S2SV_blank>\" , \"\" ) ; ( void ) SetImageProperty ( image , attribute , ( char * ) data , exception ) ; } attribute = DestroyString ( attribute ) ; } } if ( image_info -> verbose != MagickFalse ) { if ( data == ( unsigned char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"%d\\\\n\" , datum ) ; else { for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i != ( ssize_t ) length ) && ( length <= 4 ) ) { ssize_t j ; datum = 0 ; for ( j = ( ssize_t ) length - 1 ; j >= 0 ; j -- ) datum = ( 256 * datum + data [ j ] ) ; ( void ) FormatLocaleFile ( stdout , \"%d\" , datum ) ; } else for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( isprint ( ( int ) data [ i ] ) != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"%c\" , data [ i ] ) ; else ( void ) FormatLocaleFile ( stdout , \"%c\" , '.' ) ; ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; } } if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( ( group == 0xfffc ) && ( element == 0xfffc ) ) { Image * last ; last = RemoveLastImageFromList ( & image ) ; if ( last != ( Image * ) NULL ) last = DestroyImage ( last ) ; break ; } if ( ( width == 0 ) || ( height == 0 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; if ( info . signed_data == 0xffff ) info . signed_data = ( size_t ) ( info . significant_bits == 16 ? 1 : 0 ) ; if ( ( image -> compression == JPEGCompression ) || ( image -> compression == JPEG2000Compression ) ) { Image * images ; ImageInfo * read_info ; int c ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; ( void ) ( ( ( ssize_t ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; images = NewImageList ( ) ; for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { char filename [ MagickPathExtent ] ; const char * property ; FILE * file ; Image * jpeg_image ; int unique_file ; unsigned int tag ; tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; <S2SV_StartBug> if ( tag == 0xFFFEE0DD ) <S2SV_EndBug> break ; if ( tag != 0xFFFEE000 ) { read_info = DestroyImageInfo ( read_info ) ; ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( file == ( FILE * ) NULL ) { ( void ) RelinquishUniqueFileResource ( filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , filename ) ; break ; } for ( c = EOF ; length != 0 ; length -- ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( fputc ( c , file ) != c ) break ; } ( void ) fclose ( file ) ; if ( c == EOF ) break ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"jpeg:%s\" , filename ) ; if ( image -> compression == JPEG2000Compression ) ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"j2k:%s\" , filename ) ; jpeg_image = ReadImage ( read_info , exception ) ; if ( jpeg_image != ( Image * ) NULL ) { ResetImagePropertyIterator ( image ) ; property = GetNextImageProperty ( image ) ; while ( property != ( const char * ) NULL ) { ( void ) SetImageProperty ( jpeg_image , property , GetImageProperty ( image , property , exception ) , exception ) ; property = GetNextImageProperty ( image ) ; } AppendImageToList ( & images , jpeg_image ) ; } ( void ) RelinquishUniqueFileResource ( filename ) ; } read_info = DestroyImageInfo ( read_info ) ; if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; image = DestroyImageList ( image ) ; return ( GetFirstImageInList ( images ) ) ; } if ( info . depth != ( 1UL * MAGICKCORE_QUANTUM_DEPTH ) ) { QuantumAny range ; length = ( size_t ) ( GetQuantumRange ( info . depth ) + 1 ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; info . scale = ( Quantum * ) AcquireQuantumMemory ( MagickMax ( length , 256 ) , sizeof ( * info . scale ) ) ; if ( info . scale == ( Quantum * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( info . scale , 0 , MagickMax ( length , 256 ) * sizeof ( * info . scale ) ) ; range = GetQuantumRange ( info . depth ) ; for ( i = 0 ; i <= ( ssize_t ) GetQuantumRange ( info . depth ) ; i ++ ) info . scale [ i ] = ScaleAnyToQuantum ( ( size_t ) i , range ) ; } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) { int c ; c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; } tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) { stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; } offset = TellBlob ( image ) + 8 ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } } for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; image -> depth = info . depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; image -> colorspace = RGBColorspace ; ( void ) SetImageBackgroundColor ( image , exception ) ; if ( ( image -> colormap == ( PixelInfo * ) NULL ) && ( info . samples_per_pixel == 1 ) ) { int index ; size_t one ; one = 1 ; if ( colors == 0 ) colors = one << info . depth ; if ( AcquireImageColormap ( image , colors , exception ) == MagickFalse ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( redmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = redmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; } if ( greenmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = greenmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . green = ( MagickRealType ) index ; } if ( bluemap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = bluemap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } if ( graymap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = graymap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; image -> colormap [ i ] . green = ( MagickRealType ) index ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) { int c ; c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; } tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; stream_info -> remaining = ( size_t ) ReadBlobLSBLong ( image ) ; if ( ( tag != 0xFFFEE000 ) || ( stream_info -> remaining <= 64 ) || ( EOFBlob ( image ) != MagickFalse ) ) { if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } stream_info -> count = 0 ; stream_info -> segment_count = ReadBlobLSBLong ( image ) ; for ( i = 0 ; i < 15 ; i ++ ) stream_info -> segments [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; stream_info -> remaining -= 64 ; if ( stream_info -> segment_count > 1 ) { info . bytes_per_pixel = 1 ; info . depth = 8 ; if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , ( MagickOffsetType ) stream_info -> offsets [ 0 ] + stream_info -> segments [ 0 ] , SEEK_SET ) ; } } if ( ( info . samples_per_pixel > 1 ) && ( image -> interlace == PlaneInterlace ) ) { register ssize_t x ; register Quantum * q ; ssize_t y ; for ( i = 0 ; i < ( ssize_t ) info . samples_per_pixel ; i ++ ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( ( int ) i ) { case 0 : { SetPixelRed ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 1 : { SetPixelGreen ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 2 : { SetPixelBlue ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 3 : { SetPixelAlpha ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } } else { const char * option ; option = GetImageOption ( image_info , \"dcm:display-range\" ) ; if ( option != ( const char * ) NULL ) { if ( LocaleCompare ( option , \"reset\" ) == 0 ) info . window_width = 0 ; } option = GetImageOption ( image_info , \"dcm:window\" ) ; if ( option != ( char * ) NULL ) { GeometryInfo geometry_info ; MagickStatusType flags ; flags = ParseGeometry ( option , & geometry_info ) ; if ( flags & RhoValue ) info . window_center = geometry_info . rho ; if ( flags & SigmaValue ) info . window_width = geometry_info . sigma ; info . rescale = MagickTrue ; } option = GetImageOption ( image_info , \"dcm:rescale\" ) ; if ( option != ( char * ) NULL ) info . rescale = IsStringTrue ( option ) ; if ( ( info . window_center != 0 ) && ( info . window_width == 0 ) ) info . window_width = info . window_center ; status = ReadDCMPixels ( image , & info , stream_info , MagickTrue , exception ) ; if ( ( status != MagickFalse ) && ( stream_info -> segment_count > 1 ) ) { if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , ( MagickOffsetType ) stream_info -> offsets [ 0 ] + stream_info -> segments [ 1 ] , SEEK_SET ) ; ( void ) ReadDCMPixels ( image , & info , stream_info , MagickFalse , exception ) ; } } if ( SetImageGray ( image , exception ) != MagickFalse ) ( void ) SetImageColorspace ( image , GRAYColorspace , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( number_scenes - 1 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; break ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( TellBlob ( image ) < ( MagickOffsetType ) GetBlobSize ( image ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; break ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; if ( image == ( Image * ) NULL ) return ( image ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , message ) \\\\\\n{ <S2SV_ModEnd> if ( info <S2SV_ModStart> ) ) ; \\\\\\n} <S2SV_ModEnd> char explicit_vr [ <S2SV_ModStart> ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3302\n\n```\nCWE-362 static int smb_send_rqst ( struct TCP_Server_Info * server , struct smb_rqst * rqst ) { int rc ; struct kvec * iov = rqst -> rq_iov ; int n_vec = rqst -> rq_nvec ; unsigned int smb_buf_length = get_rfc1002_length ( iov [ 0 ] . iov_base ) ; unsigned int i ; size_t total_len = 0 , sent ; struct socket * ssocket = server -> ssocket ; <S2SV_StartBug> int val = 1 ; <S2SV_EndBug> cFYI ( 1 , \"Sending<S2SV_blank>smb:<S2SV_blank>smb_len=%u\" , smb_buf_length ) ; dump_smb ( iov [ 0 ] . iov_base , iov [ 0 ] . iov_len ) ; kernel_setsockopt ( ssocket , SOL_TCP , TCP_CORK , ( char * ) & val , sizeof ( val ) ) ; rc = smb_send_kvec ( server , iov , n_vec , & sent ) ; if ( rc < 0 ) goto uncork ; total_len += sent ; for ( i = 0 ; i < rqst -> rq_npages ; i ++ ) { struct kvec p_iov ; cifs_rqst_page_to_kvec ( rqst , i , & p_iov ) ; rc = smb_send_kvec ( server , & p_iov , 1 , & sent ) ; kunmap ( rqst -> rq_pages [ i ] ) ; if ( rc < 0 ) break ; total_len += sent ; } uncork : val = 0 ; kernel_setsockopt ( ssocket , SOL_TCP , TCP_CORK , ( char * ) & val , sizeof ( val ) ) ; if ( ( total_len > 0 ) && ( total_len != smb_buf_length + 4 ) ) { cFYI ( 1 , \"partial<S2SV_blank>send<S2SV_blank>(wanted=%u<S2SV_blank>sent=%zu):<S2SV_blank>terminating<S2SV_blank>\" \"session\" , smb_buf_length + 4 , total_len ) ; server -> tcpStatus = CifsNeedReconnect ; } if ( rc < 0 && rc != - EINTR ) cERROR ( 1 , \"Error<S2SV_blank>%d<S2SV_blank>sending<S2SV_blank>data<S2SV_blank>on<S2SV_blank>socket<S2SV_blank>to<S2SV_blank>server\" , rc ) ; else rc = 0 ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val = 1 ; if ( ssocket == NULL ) return - ENOTSOCK\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-354(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18672\n\n```\nCWE-354 static void recovery_abort ( void ) { if ( ! dry_run ) { storage_reset ( ) ; <S2SV_StartBug> } <S2SV_EndBug> awaiting_character = false ; memzero ( mnemonic , sizeof ( mnemonic ) ) ; memzero ( cipher , sizeof ( cipher ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } recovery_started = false ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0546\n\n```\nCWE-000 static int list_tables ( MYSQL * mysql , const char * db , const char * table ) { const char * header ; uint head_length , counter = 0 ; <S2SV_StartBug> char query [ 255 ] , rows [ NAME_LEN ] , fields [ 16 ] ; <S2SV_EndBug> MYSQL_FIELD * field ; MYSQL_RES * result ; MYSQL_ROW row , rrow ; if ( mysql_select_db ( mysql , db ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>connect<S2SV_blank>to<S2SV_blank>db<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , my_progname , db , mysql_error ( mysql ) ) ; return 1 ; } if ( table ) { mysql_real_escape_string ( mysql , rows , table , ( unsigned long ) strlen ( table ) ) ; my_snprintf ( query , sizeof ( query ) , \"show%s<S2SV_blank>tables<S2SV_blank>like<S2SV_blank>\\'%s\\'\" , opt_table_type ? \"<S2SV_blank>full\" : \"\" , rows ) ; } else my_snprintf ( query , sizeof ( query ) , \"show%s<S2SV_blank>tables\" , opt_table_type ? \"<S2SV_blank>full\" : \"\" ) ; if ( mysql_query ( mysql , query ) || ! ( result = mysql_store_result ( mysql ) ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>list<S2SV_blank>tables<S2SV_blank>in<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , my_progname , db , mysql_error ( mysql ) ) ; exit ( 1 ) ; } printf ( \"Database:<S2SV_blank>%s\" , db ) ; if ( table ) printf ( \"<S2SV_blank><S2SV_blank>Wildcard:<S2SV_blank>%s\" , table ) ; putchar ( '\\\\n' ) ; header = \"Tables\" ; head_length = ( uint ) strlen ( header ) ; field = mysql_fetch_field ( result ) ; if ( head_length < field -> max_length ) head_length = field -> max_length ; if ( opt_table_type ) { if ( ! opt_verbose ) print_header ( header , head_length , \"table_type\" , 10 , NullS ) ; else if ( opt_verbose == 1 ) print_header ( header , head_length , \"table_type\" , 10 , \"Columns\" , 8 , NullS ) ; else { print_header ( header , head_length , \"table_type\" , 10 , \"Columns\" , 8 , \"Total<S2SV_blank>Rows\" , 10 , NullS ) ; } } else { if ( ! opt_verbose ) print_header ( header , head_length , NullS ) ; else if ( opt_verbose == 1 ) print_header ( header , head_length , \"Columns\" , 8 , NullS ) ; else print_header ( header , head_length , \"Columns\" , 8 , \"Total<S2SV_blank>Rows\" , 10 , NullS ) ; } while ( ( row = mysql_fetch_row ( result ) ) ) { counter ++ ; if ( opt_verbose > 0 ) { if ( ! ( mysql_select_db ( mysql , db ) ) ) { MYSQL_RES * rresult = mysql_list_fields ( mysql , row [ 0 ] , NULL ) ; ulong rowcount = 0L ; if ( ! rresult ) { strmov ( fields , \"N/A\" ) ; strmov ( rows , \"N/A\" ) ; } else { sprintf ( fields , \"%8u\" , ( uint ) mysql_num_fields ( rresult ) ) ; mysql_free_result ( rresult ) ; if ( opt_verbose > 1 ) { <S2SV_StartBug> sprintf ( query , \"SELECT<S2SV_blank>COUNT(*)<S2SV_blank>FROM<S2SV_blank>`%s`\" , row [ 0 ] ) ; <S2SV_EndBug> if ( ! ( mysql_query ( mysql , query ) ) ) { if ( ( rresult = mysql_store_result ( mysql ) ) ) { rrow = mysql_fetch_row ( rresult ) ; rowcount += ( unsigned long ) strtoull ( rrow [ 0 ] , ( char * * ) 0 , 10 ) ; mysql_free_result ( rresult ) ; } sprintf ( rows , \"%10lu\" , rowcount ) ; } else sprintf ( rows , \"%10d\" , 0 ) ; } } } else { strmov ( fields , \"N/A\" ) ; strmov ( rows , \"N/A\" ) ; } } if ( opt_table_type ) { if ( ! opt_verbose ) print_row ( row [ 0 ] , head_length , row [ 1 ] , 10 , NullS ) ; else if ( opt_verbose == 1 ) print_row ( row [ 0 ] , head_length , row [ 1 ] , 10 , fields , 8 , NullS ) ; else print_row ( row [ 0 ] , head_length , row [ 1 ] , 10 , fields , 8 , rows , 10 , NullS ) ; } else { if ( ! opt_verbose ) print_row ( row [ 0 ] , head_length , NullS ) ; else if ( opt_verbose == 1 ) print_row ( row [ 0 ] , head_length , fields , 8 , NullS ) ; else print_row ( row [ 0 ] , head_length , fields , 8 , rows , 10 , NullS ) ; } } print_trailer ( head_length , ( opt_table_type ? 10 : opt_verbose > 0 ? 8 : 0 ) , ( opt_table_type ? ( opt_verbose > 0 ? 8 : 0 ) : ( opt_verbose > 1 ? 10 : 0 ) ) , ! opt_table_type ? 0 : opt_verbose > 1 ? 10 : 0 , 0 ) ; if ( counter && opt_verbose ) printf ( \"%u<S2SV_blank>row%s<S2SV_blank>in<S2SV_blank>set.\\\\n\\\\n\" , counter , ( counter > 1 ) ? \"s\" : \"\" ) ; mysql_free_result ( result ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char query [ NAME_LEN + 100 <S2SV_ModEnd> ] , rows <S2SV_ModStart> 1 ) { my_snprintf <S2SV_ModEnd> ( query , <S2SV_ModStart> ( query , sizeof ( query ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3122\n\n```\nCWE-264 static int try_to_unmap_cluster ( unsigned long cursor , unsigned int * mapcount , struct vm_area_struct * vma , struct page * check_page ) { struct mm_struct * mm = vma -> vm_mm ; pmd_t * pmd ; pte_t * pte ; pte_t pteval ; spinlock_t * ptl ; struct page * page ; unsigned long address ; unsigned long mmun_start ; unsigned long mmun_end ; unsigned long end ; int ret = SWAP_AGAIN ; int locked_vma = 0 ; address = ( vma -> vm_start + cursor ) & CLUSTER_MASK ; end = address + CLUSTER_SIZE ; if ( address < vma -> vm_start ) address = vma -> vm_start ; if ( end > vma -> vm_end ) end = vma -> vm_end ; pmd = mm_find_pmd ( mm , address ) ; if ( ! pmd ) return ret ; mmun_start = address ; mmun_end = end ; mmu_notifier_invalidate_range_start ( mm , mmun_start , mmun_end ) ; if ( down_read_trylock ( & vma -> vm_mm -> mmap_sem ) ) { locked_vma = ( vma -> vm_flags & VM_LOCKED ) ; if ( ! locked_vma ) up_read ( & vma -> vm_mm -> mmap_sem ) ; } pte = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; update_hiwater_rss ( mm ) ; for ( ; address < end ; pte ++ , address += PAGE_SIZE ) { if ( ! pte_present ( * pte ) ) continue ; page = vm_normal_page ( vma , address , * pte ) ; BUG_ON ( ! page || PageAnon ( page ) ) ; if ( locked_vma ) { <S2SV_StartBug> mlock_vma_page ( page ) ; <S2SV_EndBug> <S2SV_StartBug> if ( page == check_page ) <S2SV_EndBug> <S2SV_StartBug> ret = SWAP_MLOCK ; <S2SV_EndBug> continue ; } if ( ptep_clear_flush_young_notify ( vma , address , pte ) ) continue ; flush_cache_page ( vma , address , pte_pfn ( * pte ) ) ; pteval = ptep_clear_flush ( vma , address , pte ) ; if ( page -> index != linear_page_index ( vma , address ) ) { pte_t ptfile = pgoff_to_pte ( page -> index ) ; if ( pte_soft_dirty ( pteval ) ) pte_file_mksoft_dirty ( ptfile ) ; set_pte_at ( mm , address , pte , ptfile ) ; } if ( pte_dirty ( pteval ) ) set_page_dirty ( page ) ; page_remove_rmap ( page ) ; page_cache_release ( page ) ; dec_mm_counter ( mm , MM_FILEPAGES ) ; ( * mapcount ) -- ; } pte_unmap_unlock ( pte - 1 , ptl ) ; mmu_notifier_invalidate_range_end ( mm , mmun_start , mmun_end ) ; if ( locked_vma ) up_read ( & vma -> vm_mm -> mmap_sem ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> locked_vma ) { <S2SV_ModEnd> if ( page <S2SV_ModStart> == check_page ) { mlock_vma_page ( page ) ; <S2SV_ModStart> = SWAP_MLOCK ; } else if ( trylock_page ( page ) ) { mlock_vma_page ( page ) ; unlock_page ( page ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7492\n\n```\nCWE-476 static int __rds_rdma_map ( struct rds_sock * rs , struct rds_get_mr_args * args , u64 * cookie_ret , struct rds_mr * * mr_ret ) { struct rds_mr * mr = NULL , * found ; unsigned int nr_pages ; struct page * * pages = NULL ; struct scatterlist * sg ; void * trans_private ; unsigned long flags ; rds_rdma_cookie_t cookie ; unsigned int nents ; long i ; int ret ; <S2SV_StartBug> if ( rs -> rs_bound_addr == 0 ) { <S2SV_EndBug> ret = - ENOTCONN ; goto out ; } if ( ! rs -> rs_transport -> get_mr ) { ret = - EOPNOTSUPP ; goto out ; } nr_pages = rds_pages_in_vec ( & args -> vec ) ; if ( nr_pages == 0 ) { ret = - EINVAL ; goto out ; } if ( ( nr_pages - 1 ) > ( RDS_MAX_MSG_SIZE >> PAGE_SHIFT ) ) { ret = - EMSGSIZE ; goto out ; } rdsdebug ( \"RDS:<S2SV_blank>get_mr<S2SV_blank>addr<S2SV_blank>%llx<S2SV_blank>len<S2SV_blank>%llu<S2SV_blank>nr_pages<S2SV_blank>%u\\\\n\" , args -> vec . addr , args -> vec . bytes , nr_pages ) ; pages = kcalloc ( nr_pages , sizeof ( struct page * ) , GFP_KERNEL ) ; if ( ! pages ) { ret = - ENOMEM ; goto out ; } mr = kzalloc ( sizeof ( struct rds_mr ) , GFP_KERNEL ) ; if ( ! mr ) { ret = - ENOMEM ; goto out ; } refcount_set ( & mr -> r_refcount , 1 ) ; RB_CLEAR_NODE ( & mr -> r_rb_node ) ; mr -> r_trans = rs -> rs_transport ; mr -> r_sock = rs ; if ( args -> flags & RDS_RDMA_USE_ONCE ) mr -> r_use_once = 1 ; if ( args -> flags & RDS_RDMA_INVALIDATE ) mr -> r_invalidate = 1 ; if ( args -> flags & RDS_RDMA_READWRITE ) mr -> r_write = 1 ; ret = rds_pin_pages ( args -> vec . addr , nr_pages , pages , 1 ) ; if ( ret < 0 ) goto out ; nents = ret ; sg = kcalloc ( nents , sizeof ( * sg ) , GFP_KERNEL ) ; if ( ! sg ) { ret = - ENOMEM ; goto out ; } WARN_ON ( ! nents ) ; sg_init_table ( sg , nents ) ; for ( i = 0 ; i < nents ; i ++ ) sg_set_page ( & sg [ i ] , pages [ i ] , PAGE_SIZE , 0 ) ; rdsdebug ( \"RDS:<S2SV_blank>trans_private<S2SV_blank>nents<S2SV_blank>is<S2SV_blank>%u\\\\n\" , nents ) ; trans_private = rs -> rs_transport -> get_mr ( sg , nents , rs , & mr -> r_key ) ; if ( IS_ERR ( trans_private ) ) { for ( i = 0 ; i < nents ; i ++ ) put_page ( sg_page ( & sg [ i ] ) ) ; kfree ( sg ) ; ret = PTR_ERR ( trans_private ) ; goto out ; } mr -> r_trans_private = trans_private ; rdsdebug ( \"RDS:<S2SV_blank>get_mr<S2SV_blank>put_user<S2SV_blank>key<S2SV_blank>is<S2SV_blank>%x<S2SV_blank>cookie_addr<S2SV_blank>%p\\\\n\" , mr -> r_key , ( void * ) ( unsigned long ) args -> cookie_addr ) ; cookie = rds_rdma_make_cookie ( mr -> r_key , args -> vec . addr & ~ PAGE_MASK ) ; if ( cookie_ret ) * cookie_ret = cookie ; if ( args -> cookie_addr && put_user ( cookie , ( u64 __user * ) ( unsigned long ) args -> cookie_addr ) ) { ret = - EFAULT ; goto out ; } spin_lock_irqsave ( & rs -> rs_rdma_lock , flags ) ; found = rds_mr_tree_walk ( & rs -> rs_rdma_keys , mr -> r_key , mr ) ; spin_unlock_irqrestore ( & rs -> rs_rdma_lock , flags ) ; BUG_ON ( found && found != mr ) ; rdsdebug ( \"RDS:<S2SV_blank>get_mr<S2SV_blank>key<S2SV_blank>is<S2SV_blank>%x\\\\n\" , mr -> r_key ) ; if ( mr_ret ) { refcount_inc ( & mr -> r_refcount ) ; * mr_ret = mr ; } ret = 0 ; out : kfree ( pages ) ; if ( mr ) rds_mr_put ( mr ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rs_bound_addr == 0 || ! rs -> rs_transport\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4003\n\n```\nCWE-189 static void oz_usb_handle_ep_data ( struct oz_usb_ctx * usb_ctx , struct oz_usb_hdr * usb_hdr , int len ) { struct oz_data * data_hdr = ( struct oz_data * ) usb_hdr ; switch ( data_hdr -> format ) { case OZ_DATA_F_MULTIPLE_FIXED : { struct oz_multiple_fixed * body = ( struct oz_multiple_fixed * ) data_hdr ; u8 * data = body -> data ; <S2SV_StartBug> int n = ( len - sizeof ( struct oz_multiple_fixed ) + 1 ) <S2SV_EndBug> / body -> unit_size ; while ( n -- ) { oz_hcd_data_ind ( usb_ctx -> hport , body -> endpoint , data , body -> unit_size ) ; data += body -> unit_size ; } } break ; case OZ_DATA_F_ISOC_FIXED : { struct oz_isoc_fixed * body = ( struct oz_isoc_fixed * ) data_hdr ; int data_len = len - sizeof ( struct oz_isoc_fixed ) + 1 ; int unit_size = body -> unit_size ; u8 * data = body -> data ; int count ; int i ; if ( ! unit_size ) break ; count = data_len / unit_size ; for ( i = 0 ; i < count ; i ++ ) { oz_hcd_data_ind ( usb_ctx -> hport , body -> endpoint , data , unit_size ) ; data += unit_size ; } } break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int n ; if ( ! body -> unit_size ) break ; n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static char * get_object ( FILE * fp , int obj_id , const xref_t * xref , size_t * size , int * is_stream ) { static const int blk_sz = 256 ; int i , total_sz , read_sz , n_blks , search , stream ; size_t obj_sz ; char * c , * data ; long start ; const xref_entry_t * entry ; if ( size ) * size = 0 ; if ( is_stream ) * is_stream = 0 ; start = ftell ( fp ) ; entry = NULL ; for ( i = 0 ; i < xref -> n_entries ; i ++ ) if ( xref -> entries [ i ] . obj_id == obj_id ) { entry = & xref -> entries [ i ] ; break ; } if ( ! entry ) return NULL ; fseek ( fp , entry -> offset , SEEK_SET ) ; obj_sz = 0 ; total_sz = 0 ; n_blks = 1 ; <S2SV_StartBug> data = malloc ( blk_sz * n_blks ) ; <S2SV_EndBug> memset ( data , 0 , blk_sz * n_blks ) ; stream = 0 ; while ( ( read_sz = fread ( data + total_sz , 1 , blk_sz - 1 , fp ) ) && ! ferror ( fp ) ) { total_sz += read_sz ; * ( data + total_sz ) = '\\\\0' ; if ( total_sz + blk_sz >= ( blk_sz * n_blks ) ) data = realloc ( data , blk_sz * ( ++ n_blks ) ) ; search = total_sz - read_sz ; if ( search < 0 ) search = 0 ; if ( ( c = strstr ( data + search , \"endobj\" ) ) ) { * ( c + strlen ( \"endobj\" ) + 1 ) = '\\\\0' ; obj_sz = ( void * ) strstr ( data + search , \"endobj\" ) - ( void * ) data ; obj_sz += strlen ( \"endobj\" ) + 1 ; break ; } else if ( strstr ( data , \"stream\" ) ) stream = 1 ; } clearerr ( fp ) ; fseek ( fp , start , SEEK_SET ) ; if ( size ) * size = obj_sz ; if ( is_stream ) * is_stream = stream ; return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; data = safe_calloc ( <S2SV_ModEnd> blk_sz * n_blks\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int vp8_denoiser_filter_sse2 ( YV12_BUFFER_CONFIG * mc_running_avg , <S2SV_EndBug> YV12_BUFFER_CONFIG * running_avg , MACROBLOCK * signal , unsigned int motion_magnitude , int y_offset , int uv_offset ) { <S2SV_StartBug> unsigned char * sig = signal -> thismb ; <S2SV_EndBug> int sig_stride = 16 ; <S2SV_StartBug> unsigned char * mc_running_avg_y = mc_running_avg -> y_buffer + y_offset ; <S2SV_EndBug> int mc_avg_y_stride = mc_running_avg -> y_stride ; <S2SV_StartBug> unsigned char * running_avg_y = running_avg -> y_buffer + y_offset ; <S2SV_EndBug> int avg_y_stride = running_avg -> y_stride ; int r ; <S2SV_StartBug> __m128i acc_diff = _mm_setzero_si128 ( ) ; <S2SV_EndBug> const __m128i k_0 = _mm_setzero_si128 ( ) ; const __m128i k_4 = _mm_set1_epi8 ( 4 ) ; const __m128i k_8 = _mm_set1_epi8 ( 8 ) ; const __m128i k_16 = _mm_set1_epi8 ( 16 ) ; const __m128i l3 = _mm_set1_epi8 ( <S2SV_StartBug> ( motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD ) ? 7 : 6 ) ; <S2SV_EndBug> const __m128i l32 = _mm_set1_epi8 ( 2 ) ; const __m128i l21 = _mm_set1_epi8 ( 1 ) ; for ( r = 0 ; r < 16 ; ++ r ) { const __m128i v_sig = _mm_loadu_si128 ( ( __m128i * ) ( & sig [ 0 ] ) ) ; const __m128i v_mc_running_avg_y = _mm_loadu_si128 ( ( __m128i * ) ( & mc_running_avg_y [ 0 ] ) ) ; __m128i v_running_avg_y ; const __m128i pdiff = _mm_subs_epu8 ( v_mc_running_avg_y , v_sig ) ; const __m128i ndiff = _mm_subs_epu8 ( v_sig , v_mc_running_avg_y ) ; const __m128i diff_sign = _mm_cmpeq_epi8 ( pdiff , k_0 ) ; const __m128i clamped_absdiff = _mm_min_epu8 ( _mm_or_si128 ( pdiff , ndiff ) , k_16 ) ; const __m128i mask2 = _mm_cmpgt_epi8 ( k_16 , clamped_absdiff ) ; const __m128i mask1 = _mm_cmpgt_epi8 ( k_8 , clamped_absdiff ) ; const __m128i mask0 = _mm_cmpgt_epi8 ( k_4 , clamped_absdiff ) ; __m128i adj2 = _mm_and_si128 ( mask2 , l32 ) ; const __m128i adj1 = _mm_and_si128 ( mask1 , l21 ) ; const __m128i adj0 = _mm_and_si128 ( mask0 , clamped_absdiff ) ; __m128i adj , padj , nadj ; adj2 = _mm_add_epi8 ( adj2 , adj1 ) ; adj = _mm_sub_epi8 ( l3 , adj2 ) ; adj = _mm_andnot_si128 ( mask0 , adj ) ; adj = _mm_or_si128 ( adj , adj0 ) ; padj = _mm_andnot_si128 ( diff_sign , adj ) ; nadj = _mm_and_si128 ( diff_sign , adj ) ; v_running_avg_y = _mm_adds_epu8 ( v_sig , padj ) ; v_running_avg_y = _mm_subs_epu8 ( v_running_avg_y , nadj ) ; _mm_storeu_si128 ( ( __m128i * ) running_avg_y , v_running_avg_y ) ; acc_diff = _mm_adds_epi8 ( acc_diff , padj ) ; acc_diff = _mm_subs_epi8 ( acc_diff , nadj ) ; sig += sig_stride ; mc_running_avg_y += mc_avg_y_stride ; running_avg_y += avg_y_stride ; } { <S2SV_StartBug> union sum_union s ; <S2SV_EndBug> int sum_diff = 0 ; <S2SV_StartBug> s . v = acc_diff ; <S2SV_EndBug> <S2SV_StartBug> sum_diff = s . e [ 0 ] + s . e [ 1 ] + s . e [ 2 ] + s . e [ 3 ] + s . e [ 4 ] + s . e [ 5 ] <S2SV_EndBug> + s . e [ 6 ] + s . e [ 7 ] + s . e [ 8 ] + s . e [ 9 ] + s . e [ 10 ] + s . e [ 11 ] + s . e [ 12 ] + s . e [ 13 ] + s . e [ 14 ] + s . e [ 15 ] ; <S2SV_StartBug> if ( abs ( sum_diff ) > SUM_DIFF_THRESHOLD ) <S2SV_EndBug> { return COPY_BLOCK ; } <S2SV_StartBug> } <S2SV_EndBug> vp8_copy_mem16x16 ( running_avg -> y_buffer + y_offset , avg_y_stride , <S2SV_StartBug> signal -> thismb , sig_stride ) ; <S2SV_EndBug> return FILTER_BLOCK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int vp8_denoiser_filter_sse2 ( <S2SV_ModEnd> unsigned char * <S2SV_ModStart> unsigned char * mc_running_avg_y , int mc_avg_y_stride , <S2SV_ModEnd> unsigned char * <S2SV_ModStart> unsigned char * running_avg_y , int avg_y_stride , <S2SV_ModEnd> unsigned char * <S2SV_ModStart> unsigned char * sig , int sig_stride , unsigned int motion_magnitude , int increase_denoising ) { unsigned char * running_avg_y_start = running_avg_y ; unsigned char * sig_start = sig ; unsigned int sum_diff_thresh <S2SV_ModEnd> ; int r <S2SV_ModStart> int r ; int shift_inc = ( increase_denoising && <S2SV_ModEnd> motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD <S2SV_ModStart> MOTION_MAGNITUDE_THRESHOLD ) ? 1 : 0 ; __m128i acc_diff = _mm_setzero_si128 ( ) ; const __m128i k_0 = _mm_setzero_si128 ( ) ; const __m128i k_4 = _mm_set1_epi8 ( 4 + shift_inc ) ; const __m128i k_8 = _mm_set1_epi8 ( 8 ) ; const __m128i k_16 = _mm_set1_epi8 ( 16 ) ; const __m128i l3 = _mm_set1_epi8 ( ( motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD ) ? 7 + shift_inc <S2SV_ModEnd> : 6 ) <S2SV_ModStart> ; } { unsigned int abs_sum_diff = abs_sum_diff_16x1 ( acc_diff ) ; sum_diff_thresh = SUM_DIFF_THRESHOLD ; if ( increase_denoising ) sum_diff_thresh = SUM_DIFF_THRESHOLD_HIGH ; if ( abs_sum_diff > sum_diff_thresh ) { int delta = ( ( abs_sum_diff - sum_diff_thresh ) >> 8 ) + 1 ; if ( delta < 4 ) { const __m128i k_delta = _mm_set1_epi8 ( delta ) ; sig -= sig_stride * 16 ; mc_running_avg_y -= mc_avg_y_stride * 16 ; running_avg_y -= avg_y_stride * 16 ; for ( r <S2SV_ModEnd> = 0 ; <S2SV_ModStart> = 0 ; r < 16 ; ++ r ) { __m128i v_running_avg_y = _mm_loadu_si128 ( ( __m128i * ) ( & running_avg_y <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> [ 0 ] ) ) ; const __m128i v_sig = _mm_loadu_si128 ( ( __m128i * ) ( & sig [ 0 ] ) ) ; const __m128i v_mc_running_avg_y = _mm_loadu_si128 ( ( __m128i * ) ( & mc_running_avg_y [ 0 ] ) ) ; const __m128i pdiff = _mm_subs_epu8 ( v_mc_running_avg_y , v_sig ) ; const __m128i ndiff = _mm_subs_epu8 ( v_sig , v_mc_running_avg_y ) ; const __m128i diff_sign = _mm_cmpeq_epi8 ( pdiff , k_0 ) ; const __m128i adj = _mm_min_epu8 ( _mm_or_si128 ( pdiff , ndiff ) , k_delta ) ; __m128i padj , nadj ; padj = _mm_andnot_si128 ( diff_sign , adj ) ; nadj = _mm_and_si128 ( diff_sign , adj ) ; v_running_avg_y = _mm_subs_epu8 ( v_running_avg_y , padj ) ; v_running_avg_y = _mm_adds_epu8 ( v_running_avg_y , nadj ) ; _mm_storeu_si128 ( ( __m128i * ) running_avg_y , v_running_avg_y ) ; acc_diff = _mm_subs_epi8 ( acc_diff , padj ) ; acc_diff = _mm_adds_epi8 ( acc_diff , nadj ) ; sig += sig_stride ; mc_running_avg_y += mc_avg_y_stride ; running_avg_y += avg_y_stride ; } abs_sum_diff = abs_sum_diff_16x1 ( acc_diff ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; if ( abs_sum_diff > sum_diff_thresh ) <S2SV_ModEnd> { return COPY_BLOCK <S2SV_ModStart> ; } } else { return COPY_BLOCK ; } } } vp8_copy_mem16x16 ( running_avg_y_start <S2SV_ModEnd> , avg_y_stride , <S2SV_ModStart> , avg_y_stride , sig_start <S2SV_ModEnd> , sig_stride )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 static int __vcpu_run ( struct kvm_vcpu * vcpu ) { int r ; struct kvm * kvm = vcpu -> kvm ; vcpu -> srcu_idx = srcu_read_lock ( & kvm -> srcu ) ; <S2SV_StartBug> r = vapic_enter ( vcpu ) ; <S2SV_EndBug> if ( r ) { srcu_read_unlock ( & kvm -> srcu , vcpu -> srcu_idx ) ; return r ; } r = 1 ; while ( r > 0 ) { if ( vcpu -> arch . mp_state == KVM_MP_STATE_RUNNABLE && ! vcpu -> arch . apf . halted ) r = vcpu_enter_guest ( vcpu ) ; else { srcu_read_unlock ( & kvm -> srcu , vcpu -> srcu_idx ) ; kvm_vcpu_block ( vcpu ) ; vcpu -> srcu_idx = srcu_read_lock ( & kvm -> srcu ) ; if ( kvm_check_request ( KVM_REQ_UNHALT , vcpu ) ) { kvm_apic_accept_events ( vcpu ) ; switch ( vcpu -> arch . mp_state ) { case KVM_MP_STATE_HALTED : vcpu -> arch . pv . pv_unhalted = false ; vcpu -> arch . mp_state = KVM_MP_STATE_RUNNABLE ; case KVM_MP_STATE_RUNNABLE : vcpu -> arch . apf . halted = false ; break ; case KVM_MP_STATE_INIT_RECEIVED : break ; default : r = - EINTR ; break ; } } } if ( r <= 0 ) break ; clear_bit ( KVM_REQ_PENDING_TIMER , & vcpu -> requests ) ; if ( kvm_cpu_has_pending_timer ( vcpu ) ) kvm_inject_pending_timer_irqs ( vcpu ) ; if ( dm_request_for_irq_injection ( vcpu ) ) { r = - EINTR ; vcpu -> run -> exit_reason = KVM_EXIT_INTR ; ++ vcpu -> stat . request_irq_exits ; } kvm_check_async_pf_completion ( vcpu ) ; if ( signal_pending ( current ) ) { r = - EINTR ; vcpu -> run -> exit_reason = KVM_EXIT_INTR ; ++ vcpu -> stat . signal_exits ; } if ( need_resched ( ) ) { srcu_read_unlock ( & kvm -> srcu , vcpu -> srcu_idx ) ; kvm_resched ( vcpu ) ; vcpu -> srcu_idx = srcu_read_lock ( & kvm -> srcu ) ; } } srcu_read_unlock ( & kvm -> srcu , vcpu -> srcu_idx ) ; <S2SV_StartBug> vapic_exit ( vcpu ) ; <S2SV_EndBug> return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> srcu ) ; <S2SV_ModEnd> r = 1 <S2SV_ModStart> srcu_idx ) ; <S2SV_ModEnd> return r ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20169\n\n```\nCWE-400 int __usb_get_extra_descriptor ( char * buffer , unsigned size , <S2SV_StartBug> unsigned char type , void * * ptr ) <S2SV_EndBug> { struct usb_descriptor_header * header ; while ( size >= sizeof ( struct usb_descriptor_header ) ) { header = ( struct usb_descriptor_header * ) buffer ; <S2SV_StartBug> if ( header -> bLength < 2 ) { <S2SV_EndBug> printk ( KERN_ERR \"%s:<S2SV_blank>bogus<S2SV_blank>descriptor,<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>length<S2SV_blank>%d\\\\n\" , usbcore_name , header -> bDescriptorType , header -> bLength ) ; return - 1 ; } <S2SV_StartBug> if ( header -> bDescriptorType == type ) { <S2SV_EndBug> * ptr = header ; return 0 ; } buffer += header -> bLength ; size -= header -> bLength ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * * ptr , size_t minsize <S2SV_ModStart> bLength < 2 || header -> bLength > size <S2SV_ModStart> bDescriptorType == type && header -> bLength >= minsize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void resize_multistep ( const uint8_t * const input , int length , uint8_t * output , int olength , uint8_t * buf ) { int steps ; if ( length == olength ) { <S2SV_StartBug> memcpy ( output , input , sizeof ( uint8_t ) * length ) ; <S2SV_EndBug> return ; } steps = get_down2_steps ( length , olength ) ; if ( steps > 0 ) { int s ; uint8_t * out = NULL ; uint8_t * tmpbuf = NULL ; uint8_t * otmp , * otmp2 ; int filteredlength = length ; if ( ! tmpbuf ) { tmpbuf = ( uint8_t * ) malloc ( sizeof ( uint8_t ) * length ) ; otmp = tmpbuf ; } else { otmp = buf ; } otmp2 = otmp + get_down2_length ( length , 1 ) ; for ( s = 0 ; s < steps ; ++ s ) { const int proj_filteredlength = get_down2_length ( filteredlength , 1 ) ; const uint8_t * const in = ( s == 0 ? input : out ) ; if ( s == steps - 1 && proj_filteredlength == olength ) out = output ; else out = ( s & 1 ? otmp2 : otmp ) ; if ( filteredlength & 1 ) down2_symodd ( in , filteredlength , out ) ; else down2_symeven ( in , filteredlength , out ) ; filteredlength = proj_filteredlength ; } if ( filteredlength != olength ) { interpolate ( out , filteredlength , output , olength ) ; } if ( tmpbuf ) free ( tmpbuf ) ; } else { interpolate ( input , length , output , olength ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , sizeof ( output [ 0 ] <S2SV_ModEnd> ) * length\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13017\n\n```\nCWE-125 static void dhcp6opt_print ( netdissect_options * ndo , const u_char * cp , const u_char * ep ) { const struct dhcp6opt * dh6o ; const u_char * tp ; size_t i ; uint16_t opttype ; size_t optlen ; uint8_t auth_proto ; u_int authinfolen , authrealmlen ; int remain_len ; int label_len ; uint16_t subopt_code ; uint16_t subopt_len ; if ( cp == ep ) return ; while ( cp < ep ) { if ( ep < cp + sizeof ( * dh6o ) ) goto trunc ; dh6o = ( const struct dhcp6opt * ) cp ; ND_TCHECK ( * dh6o ) ; optlen = EXTRACT_16BITS ( & dh6o -> dh6opt_len ) ; if ( ep < cp + sizeof ( * dh6o ) + optlen ) goto trunc ; opttype = EXTRACT_16BITS ( & dh6o -> dh6opt_type ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s\" , tok2str ( dh6opt_str , \"opt_%u\" , opttype ) ) ) ; ND_TCHECK2 ( * ( cp + sizeof ( * dh6o ) ) , optlen ) ; switch ( opttype ) { case DH6OPT_CLIENTID : case DH6OPT_SERVERID : if ( optlen < 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; switch ( EXTRACT_16BITS ( tp ) ) { case 1 : if ( optlen >= 2 + 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>hwaddr/time<S2SV_blank>type<S2SV_blank>%u<S2SV_blank>time<S2SV_blank>%u<S2SV_blank>\" , EXTRACT_16BITS ( & tp [ 2 ] ) , EXTRACT_32BITS ( & tp [ 4 ] ) ) ) ; for ( i = 8 ; i < optlen ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; } break ; case 2 : if ( optlen >= 2 + 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>vid<S2SV_blank>\" ) ) ; for ( i = 2 ; i < 2 + 8 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; } break ; case 3 : if ( optlen >= 2 + 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>hwaddr<S2SV_blank>type<S2SV_blank>%u<S2SV_blank>\" , EXTRACT_16BITS ( & tp [ 2 ] ) ) ) ; for ( i = 4 ; i < optlen ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; } break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>type<S2SV_blank>%d)\" , EXTRACT_16BITS ( tp ) ) ) ; break ; } break ; case DH6OPT_IA_ADDR : if ( optlen < 24 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & tp [ 0 ] ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pltime:%u<S2SV_blank>vltime:%u\" , EXTRACT_32BITS ( & tp [ 16 ] ) , EXTRACT_32BITS ( & tp [ 20 ] ) ) ) ; if ( optlen > 24 ) { dhcp6opt_print ( ndo , tp + 24 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_ORO : case DH6OPT_ERO : if ( optlen % 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; for ( i = 0 ; i < optlen ; i += 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( dh6opt_str , \"opt_%u\" , EXTRACT_16BITS ( & tp [ i ] ) ) ) ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_PREFERENCE : if ( optlen != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%d)\" , * tp ) ) ; break ; case DH6OPT_ELAPSED_TIME : if ( optlen != 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%d)\" , EXTRACT_16BITS ( tp ) ) ) ; break ; case DH6OPT_RELAY_MSG : ND_PRINT ( ( ndo , \"<S2SV_blank>(\" ) ) ; tp = ( const u_char * ) ( dh6o + 1 ) ; dhcp6_print ( ndo , tp , optlen ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_AUTH : if ( optlen < 11 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; auth_proto = * tp ; switch ( auth_proto ) { case DH6OPT_AUTHPROTO_DELAYED : ND_PRINT ( ( ndo , \"<S2SV_blank>proto:<S2SV_blank>delayed\" ) ) ; break ; case DH6OPT_AUTHPROTO_RECONFIG : ND_PRINT ( ( ndo , \"<S2SV_blank>proto:<S2SV_blank>reconfigure\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>proto:<S2SV_blank>%d\" , auth_proto ) ) ; break ; } tp ++ ; switch ( * tp ) { case DH6OPT_AUTHALG_HMACMD5 : ND_PRINT ( ( ndo , \",<S2SV_blank>alg:<S2SV_blank>HMAC-MD5\" ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>alg:<S2SV_blank>%d\" , * tp ) ) ; break ; } tp ++ ; switch ( * tp ) { case DH6OPT_AUTHRDM_MONOCOUNTER : ND_PRINT ( ( ndo , \",<S2SV_blank>RDM:<S2SV_blank>mono\" ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>RDM:<S2SV_blank>%d\" , * tp ) ) ; break ; } tp ++ ; ND_PRINT ( ( ndo , \",<S2SV_blank>RD:\" ) ) ; for ( i = 0 ; i < 4 ; i ++ , tp += 2 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%04x\" , EXTRACT_16BITS ( tp ) ) ) ; authinfolen = optlen - 11 ; switch ( auth_proto ) { case DH6OPT_AUTHPROTO_DELAYED : if ( authinfolen == 0 ) break ; if ( authinfolen < 20 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>??\" ) ) ; break ; } authrealmlen = authinfolen - 20 ; if ( authrealmlen > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>realm:<S2SV_blank>\" ) ) ; } for ( i = 0 ; i < authrealmlen ; i ++ , tp ++ ) ND_PRINT ( ( ndo , \"%02x\" , * tp ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>key<S2SV_blank>ID:<S2SV_blank>%08x\" , EXTRACT_32BITS ( tp ) ) ) ; tp += 4 ; ND_PRINT ( ( ndo , \",<S2SV_blank>HMAC-MD5:\" ) ) ; for ( i = 0 ; i < 4 ; i ++ , tp += 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%08x\" , EXTRACT_32BITS ( tp ) ) ) ; break ; case DH6OPT_AUTHPROTO_RECONFIG : if ( authinfolen != 17 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>??\" ) ) ; break ; } switch ( * tp ++ ) { case DH6OPT_AUTHRECONFIG_KEY : ND_PRINT ( ( ndo , \"<S2SV_blank>reconfig-key\" ) ) ; break ; case DH6OPT_AUTHRECONFIG_HMACMD5 : ND_PRINT ( ( ndo , \"<S2SV_blank>type:<S2SV_blank>HMAC-MD5\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>type:<S2SV_blank>??\" ) ) ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>value:\" ) ) ; for ( i = 0 ; i < 4 ; i ++ , tp += 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%08x\" , EXTRACT_32BITS ( tp ) ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>??\" ) ) ; break ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_RAPID_COMMIT : ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_INTERFACE_ID : case DH6OPT_SUBSCRIBER_ID : tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; for ( i = 0 ; i < optlen && i < 10 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \"...)\" ) ) ; break ; <S2SV_StartBug> case DH6OPT_RECONF_MSG : <S2SV_EndBug> tp = ( const u_char * ) ( dh6o + 1 ) ; switch ( * tp ) { case DH6_RENEW : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>renew)\" ) ) ; break ; case DH6_INFORM_REQ : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>inf-req)\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>?\\\\?\\\\?(%02x))\" , * tp ) ) ; break ; } break ; case DH6OPT_RECONF_ACCEPT : ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_SIP_SERVER_A : case DH6OPT_DNS_SERVERS : case DH6OPT_SNTP_SERVERS : case DH6OPT_NIS_SERVERS : case DH6OPT_NISP_SERVERS : case DH6OPT_BCMCS_SERVER_A : case DH6OPT_PANA_AGENT : case DH6OPT_LQ_CLIENT_LINK : if ( optlen % 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; for ( i = 0 ; i < optlen ; i += 16 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & tp [ i ] ) ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_SIP_SERVER_D : case DH6OPT_DOMAIN_LIST : tp = ( const u_char * ) ( dh6o + 1 ) ; while ( tp < cp + sizeof ( * dh6o ) + optlen ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ( tp = ns_nprint ( ndo , tp , cp + sizeof ( * dh6o ) + optlen ) ) == NULL ) goto trunc ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_STATUS_CODE : if ( optlen < 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s)\" , dhcp6stcode ( EXTRACT_16BITS ( & tp [ 0 ] ) ) ) ) ; break ; case DH6OPT_IA_NA : case DH6OPT_IA_PD : if ( optlen < 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>IAID:%u<S2SV_blank>T1:%u<S2SV_blank>T2:%u\" , EXTRACT_32BITS ( & tp [ 0 ] ) , EXTRACT_32BITS ( & tp [ 4 ] ) , EXTRACT_32BITS ( & tp [ 8 ] ) ) ) ; if ( optlen > 12 ) { dhcp6opt_print ( ndo , tp + 12 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_IA_TA : if ( optlen < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>IAID:%u\" , EXTRACT_32BITS ( tp ) ) ) ; if ( optlen > 4 ) { dhcp6opt_print ( ndo , tp + 4 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_IA_PD_PREFIX : if ( optlen < 25 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s/%d\" , ip6addr_string ( ndo , & tp [ 9 ] ) , tp [ 8 ] ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pltime:%u<S2SV_blank>vltime:%u\" , EXTRACT_32BITS ( & tp [ 0 ] ) , EXTRACT_32BITS ( & tp [ 4 ] ) ) ) ; if ( optlen > 25 ) { dhcp6opt_print ( ndo , tp + 25 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_LIFETIME : case DH6OPT_CLT_TIME : if ( optlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%d)\" , EXTRACT_32BITS ( tp ) ) ) ; break ; case DH6OPT_REMOTE_ID : if ( optlen < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%d<S2SV_blank>\" , EXTRACT_32BITS ( tp ) ) ) ; for ( i = 4 ; i < optlen && i < 14 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \"...)\" ) ) ; break ; case DH6OPT_LQ_QUERY : if ( optlen < 17 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; switch ( * tp ) { case 1 : ND_PRINT ( ( ndo , \"<S2SV_blank>by-address\" ) ) ; break ; case 2 : ND_PRINT ( ( ndo , \"<S2SV_blank>by-clientID\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>type_%d\" , ( int ) * tp ) ) ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & tp [ 1 ] ) ) ) ; if ( optlen > 17 ) { dhcp6opt_print ( ndo , tp + 17 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_CLIENT_DATA : tp = ( const u_char * ) ( dh6o + 1 ) ; if ( optlen > 0 ) { dhcp6opt_print ( ndo , tp , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_LQ_RELAY_DATA : if ( optlen < 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>\" , ip6addr_string ( ndo , & tp [ 0 ] ) ) ) ; for ( i = 16 ; i < optlen && i < 26 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \"...)\" ) ) ; break ; case DH6OPT_NTP_SERVER : if ( optlen < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; while ( tp < cp + sizeof ( * dh6o ) + optlen - 4 ) { subopt_code = EXTRACT_16BITS ( tp ) ; tp += 2 ; subopt_len = EXTRACT_16BITS ( tp ) ; tp += 2 ; if ( tp + subopt_len > cp + sizeof ( * dh6o ) + optlen ) goto trunc ; ND_PRINT ( ( ndo , \"<S2SV_blank>subopt:%d\" , subopt_code ) ) ; switch ( subopt_code ) { case DH6OPT_NTP_SUBOPTION_SRV_ADDR : case DH6OPT_NTP_SUBOPTION_MC_ADDR : if ( subopt_len != 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?\" ) ) ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & tp [ 0 ] ) ) ) ; break ; case DH6OPT_NTP_SUBOPTION_SRV_FQDN : ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ns_nprint ( ndo , tp , tp + subopt_len ) == NULL ) goto trunc ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>?\" ) ) ; break ; } tp += subopt_len ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_AFTR_NAME : if ( optlen < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; remain_len = optlen ; ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; while ( remain_len && * tp ) { label_len = * tp ++ ; if ( label_len < remain_len - 1 ) { ( void ) fn_printn ( ndo , tp , label_len , NULL ) ; tp += label_len ; remain_len -= ( label_len + 1 ) ; if ( * tp ) ND_PRINT ( ( ndo , \".\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>?\" ) ) ; break ; } } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_NEW_POSIX_TIMEZONE : case DH6OPT_NEW_TZDB_TIMEZONE : case DH6OPT_MUDURL : if ( optlen < 5 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"=\" ) ) ; ( void ) fn_printn ( ndo , tp , ( u_int ) optlen , NULL ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; default : ND_PRINT ( ( ndo , \")\" ) ) ; break ; } cp += sizeof ( * dh6o ) + optlen ; } return ; trunc : ND_PRINT ( ( ndo , \"[|dhcp6ext]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case DH6OPT_RECONF_MSG : if ( optlen != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-25669\n\n```\nCWE-416 static void sunkbd_reinit ( struct work_struct * work ) { struct sunkbd * sunkbd = container_of ( work , struct sunkbd , tq ) ; <S2SV_StartBug> wait_event_interruptible_timeout ( sunkbd -> wait , sunkbd -> reset >= 0 , HZ ) ; <S2SV_EndBug> <S2SV_StartBug> serio_write ( sunkbd -> serio , SUNKBD_CMD_SETLED ) ; <S2SV_EndBug> serio_write ( sunkbd -> serio , ( ! ! test_bit ( LED_CAPSL , sunkbd -> dev -> led ) << 3 ) | ( ! ! test_bit ( LED_SCROLLL , sunkbd -> dev -> led ) << 2 ) | ( ! ! test_bit ( LED_COMPOSE , sunkbd -> dev -> led ) << 1 ) | ! ! test_bit ( LED_NUML , sunkbd -> dev -> led ) ) ; serio_write ( sunkbd -> serio , SUNKBD_CMD_NOCLICK - ! ! test_bit ( SND_CLICK , sunkbd -> dev -> snd ) ) ; serio_write ( sunkbd -> serio , SUNKBD_CMD_BELLOFF - ! ! test_bit ( SND_BELL , sunkbd -> dev -> snd ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> reset >= 0 || ! sunkbd -> enabled <S2SV_ModStart> HZ ) ; if <S2SV_ModEnd> ( sunkbd -> <S2SV_ModStart> ( sunkbd -> reset >= 0 && sunkbd -> enabled ) sunkbd_set_leds_beeps ( sunkbd <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12667\n\n```\nCWE-772 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; register Quantum * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } quantum_info = ( QuantumInfo * ) NULL ; clone_info = ( ImageInfo * ) NULL ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image2 = ReadMATImageV4 ( image_info , image , exception ) ; if ( image2 == NULL ) goto MATLAB_KO ; image = image2 ; goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) <S2SV_StartBug> MATLAB_KO : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_EndBug> filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; if ( MATLAB_HDR . ObjectSize + filepos > GetBlobSize ( image ) ) goto MATLAB_KO ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; clone_info = CloneImageInfo ( image_info ) ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = decompress_block ( image , & MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) continue ; MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; ( void ) ReadBlobXXXLong ( image2 ) ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; default : ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( unsigned long ) ldblk * MATLAB_HDR . SizeY > MATLAB_HDR . ObjectSize ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { image -> type = GrayscaleType ; SetImageColorspace ( image , GRAYColorspace , exception ) ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( image , q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( image , ( double * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( image , ( float * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image , exception ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( ( image2 != NULL ) && ( image2 != image ) ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } } RelinquishMagickMemory ( BImgBuff ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; END_OF_READING : if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 6 ) ) { MATLAB_KO : clone_info = DestroyImageInfo ( clone_info ) ; <S2SV_ModEnd> ThrowReaderException ( CorruptImageError <S2SV_ModStart> \"ImproperImageHeader\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19052\n\n```\nCWE-22 PHYSICALPATH_FUNC ( mod_alias_physical_handler ) { plugin_data * p = p_d ; int uri_len , basedir_len ; char * uri_ptr ; size_t k ; if ( buffer_is_empty ( con -> physical . path ) ) return HANDLER_GO_ON ; mod_alias_patch_connection ( srv , con , p ) ; basedir_len = buffer_string_length ( con -> physical . basedir ) ; if ( '/' == con -> physical . basedir -> ptr [ basedir_len - 1 ] ) -- basedir_len ; uri_len = buffer_string_length ( con -> physical . path ) - basedir_len ; uri_ptr = con -> physical . path -> ptr + basedir_len ; for ( k = 0 ; k < p -> conf . alias -> used ; k ++ ) { data_string * ds = ( data_string * ) p -> conf . alias -> data [ k ] ; int alias_len = buffer_string_length ( ds -> key ) ; if ( alias_len > uri_len ) continue ; if ( buffer_is_empty ( ds -> key ) ) continue ; if ( 0 == ( con -> conf . force_lowercase_filenames ? strncasecmp ( uri_ptr , ds -> key -> ptr , alias_len ) : strncmp ( uri_ptr , ds -> key -> ptr , alias_len ) ) ) { <S2SV_StartBug> buffer_copy_buffer ( con -> physical . basedir , ds -> value ) ; <S2SV_EndBug> buffer_copy_buffer ( srv -> tmp_buf , ds -> value ) ; buffer_append_string ( srv -> tmp_buf , uri_ptr + alias_len ) ; buffer_copy_buffer ( con -> physical . path , srv -> tmp_buf ) ; return HANDLER_GO_ON ; } } return HANDLER_GO_ON ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( uri_ptr [ alias_len ] == '.' ) { char * s = uri_ptr + alias_len + 1 ; if ( * s == '.' ) ++ s ; if ( * s == '/' || * s == '\\\\0' ) { size_t vlen = buffer_string_length ( ds -> value ) ; if ( 0 != alias_len && ds -> key -> ptr [ alias_len - 1 ] != '/' && 0 != vlen && ds -> value -> ptr [ vlen - 1 ] == '/' ) { con -> http_status = 403 ; return HANDLER_FINISHED ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6763\n\n```\nCWE-119 int au1100fb_fb_mmap ( struct fb_info * fbi , struct vm_area_struct * vma ) { struct au1100fb_device * fbdev ; <S2SV_StartBug> unsigned int len ; <S2SV_EndBug> unsigned long start = 0 , off ; <S2SV_StartBug> fbdev = to_au1100fb_device ( fbi ) ; <S2SV_EndBug> if ( vma -> vm_pgoff > ( ~ 0UL >> PAGE_SHIFT ) ) { return - EINVAL ; } start = fbdev -> fb_phys & PAGE_MASK ; len = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + fbdev -> fb_len ) ; off = vma -> vm_pgoff << PAGE_SHIFT ; if ( ( vma -> vm_end - vma -> vm_start + off ) > len ) { return - EINVAL ; } off += start ; vma -> vm_pgoff = off >> PAGE_SHIFT ; vma -> vm_page_prot = pgprot_noncached ( vma -> vm_page_prot ) ; pgprot_val ( vma -> vm_page_prot ) |= ( 6 << 9 ) ; <S2SV_StartBug> if ( io_remap_pfn_range ( vma , vma -> vm_start , off >> PAGE_SHIFT , <S2SV_EndBug> vma -> vm_end - vma -> vm_start , vma -> vm_page_prot ) ) { return - EAGAIN ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * fbdev ; <S2SV_ModEnd> fbdev = to_au1100fb_device <S2SV_ModStart> ( fbi ) <S2SV_ModEnd> ; vma -> <S2SV_ModStart> 9 ) ; return vm_iomap_memory <S2SV_ModEnd> ( vma , <S2SV_ModStart> ( vma , fbdev -> fb_phys , fbdev -> fb_len ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int mount_autodev ( const char * name , const struct lxc_rootfs * rootfs , const char * lxcpath ) { int ret ; size_t clen ; char * path ; INFO ( \"Mounting<S2SV_blank>container<S2SV_blank>/dev\" ) ; clen = ( rootfs -> path ? strlen ( rootfs -> mount ) : 0 ) + 9 ; path = alloca ( clen ) ; ret = snprintf ( path , clen , \"%s/dev\" , rootfs -> path ? rootfs -> mount : \"\" ) ; if ( ret < 0 || ret >= clen ) return - 1 ; if ( ! dir_exists ( path ) ) { WARN ( \"No<S2SV_blank>/dev<S2SV_blank>in<S2SV_blank>container.\" ) ; WARN ( \"Proceeding<S2SV_blank>without<S2SV_blank>autodev<S2SV_blank>setup\" ) ; return 0 ; } <S2SV_StartBug> if ( mount ( \"none\" , path , \"tmpfs\" , 0 , \"size=100000,mode=755\" ) ) { <S2SV_EndBug> SYSERROR ( \"Failed<S2SV_blank>mounting<S2SV_blank>tmpfs<S2SV_blank>onto<S2SV_blank>%s\\\\n\" , path ) ; return false ; } INFO ( \"Mounted<S2SV_blank>tmpfs<S2SV_blank>onto<S2SV_blank>%s\" , path ) ; ret = snprintf ( path , clen , \"%s/dev/pts\" , rootfs -> path ? rootfs -> mount : \"\" ) ; if ( ret < 0 || ret >= clen ) return - 1 ; if ( ! dir_exists ( path ) ) { ret = mkdir ( path , S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH ) ; if ( ret ) { SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>/dev/pts<S2SV_blank>in<S2SV_blank>container\" ) ; return - 1 ; } } INFO ( \"Mounted<S2SV_blank>container<S2SV_blank>/dev\" ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( safe_mount <S2SV_ModEnd> ( \"none\" , <S2SV_ModStart> 0 , \"size=100000,mode=755\" , rootfs -> path ? rootfs -> mount : NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-681(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19317\n\n```\nCWE-681 static int lookupName ( Parse * pParse , const char * zDb , const char * zTab , const char * zCol , NameContext * pNC , Expr * pExpr ) { int i , j ; int cnt = 0 ; int cntTab = 0 ; int nSubquery = 0 ; sqlite3 * db = pParse -> db ; struct SrcList_item * pItem ; struct SrcList_item * pMatch = 0 ; NameContext * pTopNC = pNC ; Schema * pSchema = 0 ; int eNewExprOp = TK_COLUMN ; Table * pTab = 0 ; Column * pCol ; assert ( pNC ) ; assert ( zCol ) ; assert ( ! ExprHasProperty ( pExpr , EP_TokenOnly | EP_Reduced ) ) ; pExpr -> iTable = - 1 ; ExprSetVVAProperty ( pExpr , EP_NoReduce ) ; if ( zDb ) { testcase ( pNC -> ncFlags & NC_PartIdx ) ; testcase ( pNC -> ncFlags & NC_IsCheck ) ; if ( ( pNC -> ncFlags & ( NC_PartIdx | NC_IsCheck ) ) != 0 ) { zDb = 0 ; } else { for ( i = 0 ; i < db -> nDb ; i ++ ) { assert ( db -> aDb [ i ] . zDbSName ) ; if ( sqlite3StrICmp ( db -> aDb [ i ] . zDbSName , zDb ) == 0 ) { pSchema = db -> aDb [ i ] . pSchema ; break ; } } } } assert ( pNC && cnt == 0 ) ; do { ExprList * pEList ; SrcList * pSrcList = pNC -> pSrcList ; if ( pSrcList ) { for ( i = 0 , pItem = pSrcList -> a ; i < pSrcList -> nSrc ; i ++ , pItem ++ ) { pTab = pItem -> pTab ; assert ( pTab != 0 && pTab -> zName != 0 ) ; assert ( pTab -> nCol > 0 ) ; if ( pItem -> pSelect && ( pItem -> pSelect -> selFlags & SF_NestedFrom ) != 0 ) { int hit = 0 ; pEList = pItem -> pSelect -> pEList ; for ( j = 0 ; j < pEList -> nExpr ; j ++ ) { if ( sqlite3MatchSpanName ( pEList -> a [ j ] . zSpan , zCol , zTab , zDb ) ) { cnt ++ ; cntTab = 2 ; pMatch = pItem ; pExpr -> iColumn = j ; hit = 1 ; } } if ( hit || zTab == 0 ) continue ; } if ( zDb && pTab -> pSchema != pSchema ) { continue ; } if ( zTab ) { const char * zTabName = pItem -> zAlias ? pItem -> zAlias : pTab -> zName ; assert ( zTabName != 0 ) ; if ( sqlite3StrICmp ( zTabName , zTab ) != 0 ) { continue ; } if ( IN_RENAME_OBJECT && pItem -> zAlias ) { sqlite3RenameTokenRemap ( pParse , 0 , ( void * ) & pExpr -> y . pTab ) ; } } if ( 0 == ( cntTab ++ ) ) { pMatch = pItem ; } for ( j = 0 , pCol = pTab -> aCol ; j < pTab -> nCol ; j ++ , pCol ++ ) { if ( sqlite3StrICmp ( pCol -> zName , zCol ) == 0 ) { if ( cnt == 1 ) { if ( pItem -> fg . jointype & JT_NATURAL ) continue ; if ( nameInUsingClause ( pItem -> pUsing , zCol ) ) continue ; } cnt ++ ; pMatch = pItem ; pExpr -> iColumn = j == pTab -> iPKey ? - 1 : ( i16 ) j ; break ; } } } if ( pMatch ) { pExpr -> iTable = pMatch -> iCursor ; pExpr -> y . pTab = pMatch -> pTab ; assert ( ( pMatch -> fg . jointype & JT_RIGHT ) == 0 ) ; if ( ( pMatch -> fg . jointype & JT_LEFT ) != 0 ) { ExprSetProperty ( pExpr , EP_CanBeNull ) ; } pSchema = pExpr -> y . pTab -> pSchema ; } } # if ! defined ( SQLITE_OMIT_TRIGGER ) || ! defined ( SQLITE_OMIT_UPSERT ) if ( zDb == 0 && zTab != 0 && cntTab == 0 ) { pTab = 0 ; # ifndef SQLITE_OMIT_TRIGGER if ( pParse -> pTriggerTab != 0 ) { int op = pParse -> eTriggerOp ; assert ( op == TK_DELETE || op == TK_UPDATE || op == TK_INSERT ) ; if ( op != TK_DELETE && sqlite3StrICmp ( \"new\" , zTab ) == 0 ) { pExpr -> iTable = 1 ; pTab = pParse -> pTriggerTab ; } else if ( op != TK_INSERT && sqlite3StrICmp ( \"old\" , zTab ) == 0 ) { pExpr -> iTable = 0 ; pTab = pParse -> pTriggerTab ; } } # endif # ifndef SQLITE_OMIT_UPSERT if ( ( pNC -> ncFlags & NC_UUpsert ) != 0 ) { Upsert * pUpsert = pNC -> uNC . pUpsert ; if ( pUpsert && sqlite3StrICmp ( \"excluded\" , zTab ) == 0 ) { pTab = pUpsert -> pUpsertSrc -> a [ 0 ] . pTab ; pExpr -> iTable = 2 ; } } # endif if ( pTab ) { int iCol ; pSchema = pTab -> pSchema ; cntTab ++ ; for ( iCol = 0 , pCol = pTab -> aCol ; iCol < pTab -> nCol ; iCol ++ , pCol ++ ) { if ( sqlite3StrICmp ( pCol -> zName , zCol ) == 0 ) { if ( iCol == pTab -> iPKey ) { iCol = - 1 ; } break ; } } if ( iCol >= pTab -> nCol && sqlite3IsRowid ( zCol ) && VisibleRowid ( pTab ) ) { iCol = - 1 ; } if ( iCol < pTab -> nCol ) { cnt ++ ; # ifndef SQLITE_OMIT_UPSERT if ( pExpr -> iTable == 2 ) { testcase ( iCol == ( - 1 ) ) ; if ( IN_RENAME_OBJECT ) { pExpr -> iColumn = iCol ; pExpr -> y . pTab = pTab ; eNewExprOp = TK_COLUMN ; } else { pExpr -> iTable = pNC -> uNC . pUpsert -> regData + iCol ; eNewExprOp = TK_REGISTER ; ExprSetProperty ( pExpr , EP_Alias ) ; } } else # endif { # ifndef SQLITE_OMIT_TRIGGER if ( iCol < 0 ) { pExpr -> affExpr = SQLITE_AFF_INTEGER ; } else if ( pExpr -> iTable == 0 ) { testcase ( iCol == 31 ) ; testcase ( iCol == 32 ) ; pParse -> oldmask |= ( iCol >= 32 ? 0xffffffff : ( ( ( u32 ) 1 ) << iCol ) ) ; } else { testcase ( iCol == 31 ) ; testcase ( iCol == 32 ) ; pParse -> newmask |= ( iCol >= 32 ? 0xffffffff : ( ( ( u32 ) 1 ) << iCol ) ) ; } pExpr -> y . pTab = pTab ; pExpr -> iColumn = ( i16 ) iCol ; eNewExprOp = TK_TRIGGER ; # endif } } } } # endif if ( cnt == 0 && cntTab == 1 && pMatch && ( pNC -> ncFlags & ( NC_IdxExpr | NC_GenCol ) ) == 0 && sqlite3IsRowid ( zCol ) && VisibleRowid ( pMatch -> pTab ) ) { cnt = 1 ; pExpr -> iColumn = - 1 ; pExpr -> affExpr = SQLITE_AFF_INTEGER ; } if ( ( pNC -> ncFlags & NC_UEList ) != 0 && cnt == 0 && zTab == 0 ) { pEList = pNC -> uNC . pEList ; assert ( pEList != 0 ) ; for ( j = 0 ; j < pEList -> nExpr ; j ++ ) { char * zAs = pEList -> a [ j ] . zName ; if ( zAs != 0 && sqlite3StrICmp ( zAs , zCol ) == 0 ) { Expr * pOrig ; assert ( pExpr -> pLeft == 0 && pExpr -> pRight == 0 ) ; assert ( pExpr -> x . pList == 0 ) ; assert ( pExpr -> x . pSelect == 0 ) ; pOrig = pEList -> a [ j ] . pExpr ; if ( ( pNC -> ncFlags & NC_AllowAgg ) == 0 && ExprHasProperty ( pOrig , EP_Agg ) ) { sqlite3ErrorMsg ( pParse , \"misuse<S2SV_blank>of<S2SV_blank>aliased<S2SV_blank>aggregate<S2SV_blank>%s\" , zAs ) ; return WRC_Abort ; } if ( ( pNC -> ncFlags & NC_AllowWin ) == 0 && ExprHasProperty ( pOrig , EP_Win ) ) { sqlite3ErrorMsg ( pParse , \"misuse<S2SV_blank>of<S2SV_blank>aliased<S2SV_blank>window<S2SV_blank>function<S2SV_blank>%s\" , zAs ) ; return WRC_Abort ; } if ( sqlite3ExprVectorSize ( pOrig ) != 1 ) { sqlite3ErrorMsg ( pParse , \"row<S2SV_blank>value<S2SV_blank>misused\" ) ; return WRC_Abort ; } resolveAlias ( pParse , pEList , j , pExpr , \"\" , nSubquery ) ; cnt = 1 ; pMatch = 0 ; assert ( zTab == 0 && zDb == 0 ) ; if ( IN_RENAME_OBJECT ) { sqlite3RenameTokenRemap ( pParse , 0 , ( void * ) pExpr ) ; } goto lookupname_end ; } } } if ( cnt ) break ; pNC = pNC -> pNext ; nSubquery ++ ; } while ( pNC ) ; if ( cnt == 0 && zTab == 0 ) { assert ( pExpr -> op == TK_ID ) ; if ( ExprHasProperty ( pExpr , EP_DblQuoted ) && areDoubleQuotedStringsEnabled ( db , pTopNC ) ) { sqlite3_log ( SQLITE_WARNING , \"double-quoted<S2SV_blank>string<S2SV_blank>literal:<S2SV_blank>\\\\\"%w\\\\\"\" , zCol ) ; # ifdef SQLITE_ENABLE_NORMALIZE sqlite3VdbeAddDblquoteStr ( db , pParse -> pVdbe , zCol ) ; # endif pExpr -> op = TK_STRING ; pExpr -> y . pTab = 0 ; return WRC_Prune ; } if ( sqlite3ExprIdToTrueFalse ( pExpr ) ) { return WRC_Prune ; } } if ( cnt != 1 ) { const char * zErr ; zErr = cnt == 0 ? \"no<S2SV_blank>such<S2SV_blank>column\" : \"ambiguous<S2SV_blank>column<S2SV_blank>name\" ; if ( zDb ) { sqlite3ErrorMsg ( pParse , \"%s:<S2SV_blank>%s.%s.%s\" , zErr , zDb , zTab , zCol ) ; } else if ( zTab ) { sqlite3ErrorMsg ( pParse , \"%s:<S2SV_blank>%s.%s\" , zErr , zTab , zCol ) ; } else { sqlite3ErrorMsg ( pParse , \"%s:<S2SV_blank>%s\" , zErr , zCol ) ; } pParse -> checkSchema = 1 ; pTopNC -> nErr ++ ; } if ( pExpr -> iColumn >= 0 && pMatch != 0 ) { int n = pExpr -> iColumn ; testcase ( n == BMS - 1 ) ; if ( n >= BMS ) { n = BMS - 1 ; } <S2SV_StartBug> assert ( pMatch -> iCursor == pExpr -> iTable ) ; <S2SV_EndBug> pMatch -> colUsed |= ( ( Bitmask ) 1 ) << n ; } sqlite3ExprDelete ( db , pExpr -> pLeft ) ; pExpr -> pLeft = 0 ; sqlite3ExprDelete ( db , pExpr -> pRight ) ; pExpr -> pRight = 0 ; pExpr -> op = eNewExprOp ; ExprSetProperty ( pExpr , EP_Leaf ) ; lookupname_end : if ( cnt == 1 ) { assert ( pNC != 0 ) ; if ( ! ExprHasProperty ( pExpr , EP_Alias ) ) { sqlite3AuthRead ( pParse , pExpr , pSchema , pNC -> pSrcList ) ; } for ( ; ; ) { assert ( pTopNC != 0 ) ; pTopNC -> nRef ++ ; if ( pTopNC == pNC ) break ; pTopNC = pTopNC -> pNext ; } return WRC_Prune ; } else { return WRC_Abort ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } assert ( pExpr -> y . pTab != 0 ) ; assert ( <S2SV_ModStart> iTable ) ; if ( pExpr -> y . pTab -> tabFlags & TF_HasGenerated ) { Column * pCol = pExpr -> y . pTab -> aCol + pExpr -> iColumn ; if ( pCol -> colFlags & COLFLAG_GENERATED ) n = BMS - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_tokens_from_tree ( struct vp9_token * tokens , <S2SV_StartBug> const vp9_tree_index * tree ) { <S2SV_EndBug> tree2tok ( tokens , tree , 0 , 0 , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tokens , const vpx_tree_index <S2SV_ModEnd> * tree )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 static void usage ( const char * prog ) { fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank>[OPTION...]\\\\n\" , prog ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-f,<S2SV_blank>--use-file=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>configuration<S2SV_blank>file\\\\n\" ) ; # if defined _WITH_VRRP_ && defined _WITH_LVS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-P,<S2SV_blank>--vrrp<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Only<S2SV_blank>run<S2SV_blank>with<S2SV_blank>VRRP<S2SV_blank>subsystem\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-C,<S2SV_blank>--check<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Only<S2SV_blank>run<S2SV_blank>with<S2SV_blank>Health-checker<S2SV_blank>subsystem\\\\n\" ) ; # endif # ifdef _WITH_BFD_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-B,<S2SV_blank>--no_bfd<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>run<S2SV_blank>BFD<S2SV_blank>subsystem\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--all<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Force<S2SV_blank>all<S2SV_blank>child<S2SV_blank>processes<S2SV_blank>to<S2SV_blank>run,<S2SV_blank>even<S2SV_blank>if<S2SV_blank>have<S2SV_blank>no<S2SV_blank>configuration\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-l,<S2SV_blank>--log-console<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Log<S2SV_blank>messages<S2SV_blank>to<S2SV_blank>local<S2SV_blank>console\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-D,<S2SV_blank>--log-detail<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Detailed<S2SV_blank>log<S2SV_blank>messages\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-S,<S2SV_blank>--log-facility=[0-7]<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Set<S2SV_blank>syslog<S2SV_blank>facility<S2SV_blank>to<S2SV_blank>LOG_LOCAL[0-7]\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-g,<S2SV_blank>--log-file=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Also<S2SV_blank>log<S2SV_blank>to<S2SV_blank>FILE<S2SV_blank>(default<S2SV_blank>/tmp/keepalived.log)\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--flush-log-file<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flush<S2SV_blank>log<S2SV_blank>file<S2SV_blank>on<S2SV_blank>write\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-G,<S2SV_blank>--no-syslog<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>log<S2SV_blank>via<S2SV_blank>syslog\\\\n\" ) ; <S2SV_StartBug> # ifdef _WITH_VRRP_ <S2SV_EndBug> fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-X,<S2SV_blank>--release-vips<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Drop<S2SV_blank>VIP<S2SV_blank>on<S2SV_blank>transition<S2SV_blank>from<S2SV_blank>signal.\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-V,<S2SV_blank>--dont-release-vrrp<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>remove<S2SV_blank>VRRP<S2SV_blank>VIPs<S2SV_blank>and<S2SV_blank>VROUTEs<S2SV_blank>on<S2SV_blank>daemon<S2SV_blank>stop\\\\n\" ) ; # endif # ifdef _WITH_LVS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-I,<S2SV_blank>--dont-release-ipvs<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>remove<S2SV_blank>IPVS<S2SV_blank>topology<S2SV_blank>on<S2SV_blank>daemon<S2SV_blank>stop\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-R,<S2SV_blank>--dont-respawn<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>respawn<S2SV_blank>child<S2SV_blank>processes\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-n,<S2SV_blank>--dont-fork<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>fork<S2SV_blank>the<S2SV_blank>daemon<S2SV_blank>process\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-d,<S2SV_blank>--dump-conf<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Dump<S2SV_blank>the<S2SV_blank>configuration<S2SV_blank>data\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-p,<S2SV_blank>--pid=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>specified<S2SV_blank>pidfile<S2SV_blank>for<S2SV_blank>parent<S2SV_blank>process\\\\n\" ) ; # ifdef _WITH_VRRP_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-r,<S2SV_blank>--vrrp_pid=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>specified<S2SV_blank>pidfile<S2SV_blank>for<S2SV_blank>VRRP<S2SV_blank>child<S2SV_blank>process\\\\n\" ) ; # endif # ifdef _WITH_LVS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-c,<S2SV_blank>--checkers_pid=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>specified<S2SV_blank>pidfile<S2SV_blank>for<S2SV_blank>checkers<S2SV_blank>child<S2SV_blank>process\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-a,<S2SV_blank>--address-monitoring<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Report<S2SV_blank>all<S2SV_blank>address<S2SV_blank>additions/deletions<S2SV_blank>notified<S2SV_blank>via<S2SV_blank>netlink\\\\n\" ) ; # endif # ifdef _WITH_BFD_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-b,<S2SV_blank>--bfd_pid=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>specified<S2SV_blank>pidfile<S2SV_blank>for<S2SV_blank>BFD<S2SV_blank>child<S2SV_blank>process\\\\n\" ) ; # endif # ifdef _WITH_SNMP_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-x,<S2SV_blank>--snmp<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Enable<S2SV_blank>SNMP<S2SV_blank>subsystem\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-A,<S2SV_blank>--snmp-agent-socket=FILE<S2SV_blank>Use<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>socket<S2SV_blank>for<S2SV_blank>master<S2SV_blank>agent\\\\n\" ) ; # endif # if HAVE_DECL_CLONE_NEWNET fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-s,<S2SV_blank>--namespace=NAME<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Run<S2SV_blank>in<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>NAME<S2SV_blank>(overrides<S2SV_blank>config)\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-m,<S2SV_blank>--core-dump<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Produce<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>if<S2SV_blank>terminate<S2SV_blank>abnormally\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-M,<S2SV_blank>--core-dump-pattern=PATN<S2SV_blank>Also<S2SV_blank>set<S2SV_blank>/proc/sys/kernel/core_pattern<S2SV_blank>to<S2SV_blank>PATN<S2SV_blank>(default<S2SV_blank>\\'core\\')\\\\n\" ) ; # ifdef _MEM_CHECK_LOG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-L,<S2SV_blank>--mem-check-log<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Log<S2SV_blank>malloc/frees<S2SV_blank>to<S2SV_blank>syslog\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-i,<S2SV_blank>--config-id<S2SV_blank>id<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Skip<S2SV_blank>any<S2SV_blank>configuration<S2SV_blank>lines<S2SV_blank>beginning<S2SV_blank>\\'@\\'<S2SV_blank>that<S2SV_blank>don\\'t<S2SV_blank>match<S2SV_blank>id\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>or<S2SV_blank>any<S2SV_blank>lines<S2SV_blank>beginning<S2SV_blank>@^<S2SV_blank>that<S2SV_blank>do<S2SV_blank>match.\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>The<S2SV_blank>config-id<S2SV_blank>defaults<S2SV_blank>to<S2SV_blank>the<S2SV_blank>node<S2SV_blank>name<S2SV_blank>if<S2SV_blank>option<S2SV_blank>not<S2SV_blank>used\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--signum=SIGFUNC<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Return<S2SV_blank>signal<S2SV_blank>number<S2SV_blank>for<S2SV_blank>STOP,<S2SV_blank>RELOAD,<S2SV_blank>DATA,<S2SV_blank>STATS\" # ifdef _WITH_JSON_ \",<S2SV_blank>JSON\" # endif \"\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-t,<S2SV_blank>--config-test[=LOG_FILE]<S2SV_blank>Check<S2SV_blank>the<S2SV_blank>configuration<S2SV_blank>for<S2SV_blank>obvious<S2SV_blank>errors,<S2SV_blank>output<S2SV_blank>to\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>stderr<S2SV_blank>by<S2SV_blank>default\\\\n\" ) ; # ifdef _WITH_PERF_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--perf[=PERF_TYPE]<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Collect<S2SV_blank>perf<S2SV_blank>data,<S2SV_blank>PERF_TYPE=all,<S2SV_blank>run(default)<S2SV_blank>or<S2SV_blank>end\\\\n\" ) ; # endif # ifdef WITH_DEBUG_OPTIONS fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--debug[=...]<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Enable<S2SV_blank>debug<S2SV_blank>options.<S2SV_blank>p,<S2SV_blank>b,<S2SV_blank>c,<S2SV_blank>v<S2SV_blank>specify<S2SV_blank>parent,<S2SV_blank>bfd,<S2SV_blank>checker<S2SV_blank>and<S2SV_blank>vrrp<S2SV_blank>processes\\\\n\" ) ; # ifdef _TIMER_CHECK_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>T<S2SV_blank>-<S2SV_blank>timer<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _SMTP_ALERT_DEBUG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>M<S2SV_blank>-<S2SV_blank>email<S2SV_blank>alert<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _EPOLL_DEBUG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>E<S2SV_blank>-<S2SV_blank>epoll<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _EPOLL_THREAD_DUMP_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>D<S2SV_blank>-<S2SV_blank>epoll<S2SV_blank>thread<S2SV_blank>dump<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _VRRP_FD_DEBUG fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>F<S2SV_blank>-<S2SV_blank>vrrp<S2SV_blank>fd<S2SV_blank>dump<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _REGEX_DEBUG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>R<S2SV_blank>-<S2SV_blank>regex<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _WITH_REGEX_TIMERS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>X<S2SV_blank>-<S2SV_blank>regex<S2SV_blank>timers\\\\n\" ) ; # endif # ifdef _TSM_DEBUG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>S<S2SV_blank>-<S2SV_blank>TSM<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _NETLINK_TIMERS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>N<S2SV_blank>-<S2SV_blank>netlink<S2SV_blank>timer<S2SV_blank>debug\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Example<S2SV_blank>--debug=TpMEvcp\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-v,<S2SV_blank>--version<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Display<S2SV_blank>the<S2SV_blank>version<S2SV_blank>number\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-h,<S2SV_blank>--help<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Display<S2SV_blank>this<S2SV_blank>help<S2SV_blank>message\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"<S2SV_blank><S2SV_blank>-G,<S2SV_blank>--no-syslog<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>log<S2SV_blank>via<S2SV_blank>syslog\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-u,<S2SV_blank>--umask=MASK<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>umask<S2SV_blank>for<S2SV_blank>file<S2SV_blank>creation<S2SV_blank>(in<S2SV_blank>numeric<S2SV_blank>form)\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6401\n\n```\nCWE-310 int use_conf ( char * test_path ) { int ret ; size_t flags = 0 ; char filename [ 1024 ] , errstr [ 1024 ] ; char * buffer ; FILE * infile , * conffile ; json_t * json ; json_error_t error ; sprintf ( filename , \"%s%cinput\" , test_path , dir_sep ) ; if ( ! ( infile = fopen ( filename , \"rb\" ) ) ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , filename ) ; return 2 ; } sprintf ( filename , \"%s%cenv\" , test_path , dir_sep ) ; conffile = fopen ( filename , \"rb\" ) ; if ( conffile ) { read_conf ( conffile ) ; fclose ( conffile ) ; } if ( conf . indent < 0 || conf . indent > 255 ) { fprintf ( stderr , \"invalid<S2SV_blank>value<S2SV_blank>for<S2SV_blank>JSON_INDENT:<S2SV_blank>%d\\\\n\" , conf . indent ) ; return 2 ; } if ( conf . indent ) flags |= JSON_INDENT ( conf . indent ) ; if ( conf . compact ) flags |= JSON_COMPACT ; if ( conf . ensure_ascii ) flags |= JSON_ENSURE_ASCII ; if ( conf . preserve_order ) flags |= JSON_PRESERVE_ORDER ; if ( conf . sort_keys ) flags |= JSON_SORT_KEYS ; <S2SV_StartBug> if ( conf . strip ) { <S2SV_EndBug> buffer = loadfile ( infile ) ; json = json_loads ( strip ( buffer ) , 0 , & error ) ; free ( buffer ) ; } else json = json_loadf ( infile , 0 , & error ) ; fclose ( infile ) ; if ( ! json ) { sprintf ( errstr , \"%d<S2SV_blank>%d<S2SV_blank>%d\\\\n%s\\\\n\" , error . line , error . column , error . position , error . text ) ; ret = cmpfile ( errstr , test_path , \"error\" ) ; return ret ; } buffer = json_dumps ( json , flags ) ; ret = cmpfile ( buffer , test_path , \"output\" ) ; free ( buffer ) ; json_decref ( json ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( conf . have_hashseed ) json_object_seed ( conf . hashseed ) ; if ( conf .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9608\n\n```\nCWE-476 static int dnxhd_find_frame_end ( DNXHDParserContext * dctx , const uint8_t * buf , int buf_size ) { ParseContext * pc = & dctx -> pc ; uint64_t state = pc -> state64 ; int pic_found = pc -> frame_start_found ; int i = 0 ; if ( ! pic_found ) { for ( i = 0 ; i < buf_size ; i ++ ) { state = ( state << 8 ) | buf [ i ] ; if ( ff_dnxhd_check_header_prefix ( state & 0xffffffffff00LL ) != 0 ) { i ++ ; pic_found = 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; break ; } } } if ( pic_found && ! dctx -> remaining ) { if ( ! buf_size ) return 0 ; for ( ; i < buf_size ; i ++ ) { dctx -> cur_byte ++ ; state = ( state << 8 ) | buf [ i ] ; if ( dctx -> cur_byte == 24 ) { dctx -> h = ( state >> 32 ) & 0xFFFF ; } else if ( dctx -> cur_byte == 26 ) { dctx -> w = ( state >> 32 ) & 0xFFFF ; } else if ( dctx -> cur_byte == 42 ) { int cid = ( state >> 32 ) & 0xFFFFFFFF ; <S2SV_StartBug> if ( cid <= 0 ) <S2SV_EndBug> continue ; <S2SV_StartBug> dctx -> remaining = avpriv_dnxhd_get_frame_size ( cid ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dctx -> remaining <= 0 ) { <S2SV_EndBug> <S2SV_StartBug> dctx -> remaining = ff_dnxhd_get_hr_frame_size ( cid , dctx -> w , dctx -> h ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dctx -> remaining <= 0 ) <S2SV_EndBug> <S2SV_StartBug> return dctx -> remaining ; <S2SV_EndBug> } if ( buf_size - i + 47 >= dctx -> remaining ) { int remaining = dctx -> remaining ; pc -> frame_start_found = 0 ; pc -> state64 = - 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; return remaining ; } else { dctx -> remaining -= buf_size ; } } } } else if ( pic_found ) { if ( dctx -> remaining > buf_size ) { dctx -> remaining -= buf_size ; } else { int remaining = dctx -> remaining ; pc -> frame_start_found = 0 ; pc -> state64 = - 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; return remaining ; } } pc -> frame_start_found = pic_found ; pc -> state64 = state ; return END_NOT_FOUND ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & 0xFFFFFFFF ; int remaining ; <S2SV_ModStart> ) continue ; <S2SV_ModEnd> remaining = avpriv_dnxhd_get_frame_size <S2SV_ModStart> ; if ( <S2SV_ModEnd> remaining <= 0 <S2SV_ModStart> 0 ) { <S2SV_ModEnd> remaining = ff_dnxhd_get_hr_frame_size <S2SV_ModStart> ; if ( <S2SV_ModEnd> remaining <= 0 <S2SV_ModStart> <= 0 ) continue ; } dctx -> remaining = remaining ; <S2SV_ModEnd> if ( buf_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2548\n\n```\nCWE-20 static void snd_timer_check_master ( struct snd_timer_instance * master ) { struct snd_timer_instance * slave , * tmp ; list_for_each_entry_safe ( slave , tmp , & snd_timer_slave_list , open_list ) { if ( slave -> slave_class == master -> slave_class && slave -> slave_id == master -> slave_id ) { list_move_tail ( & slave -> open_list , & master -> slave_list_head ) ; spin_lock_irq ( & slave_active_lock ) ; <S2SV_StartBug> slave -> master = master ; <S2SV_EndBug> slave -> timer = master -> timer ; if ( slave -> flags & SNDRV_TIMER_IFLG_RUNNING ) list_add_tail ( & slave -> active_list , & master -> slave_active_head ) ; <S2SV_StartBug> spin_unlock_irq ( & slave_active_lock ) ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> slave_active_lock ) ; spin_lock ( & master -> timer -> lock ) ; <S2SV_ModStart> slave_active_head ) ; spin_unlock ( & master -> timer -> lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1476\n\n```\nCWE-189 static int opl3_load_patch ( int dev , int format , const char __user * addr , <S2SV_StartBug> int offs , int count , int pmgr_flag ) <S2SV_EndBug> { struct sbi_instrument ins ; if ( count < sizeof ( ins ) ) { printk ( KERN_WARNING \"FM<S2SV_blank>Error:<S2SV_blank>Patch<S2SV_blank>record<S2SV_blank>too<S2SV_blank>short\\\\n\" ) ; return - EINVAL ; } <S2SV_StartBug> if ( copy_from_user ( & ( ( char * ) & ins ) [ offs ] , addr + offs , sizeof ( ins ) - offs ) ) <S2SV_EndBug> return - EFAULT ; if ( ins . channel < 0 || ins . channel >= SBFM_MAXINSTR ) { printk ( KERN_WARNING \"FM<S2SV_blank>Error:<S2SV_blank>Invalid<S2SV_blank>instrument<S2SV_blank>number<S2SV_blank>%d\\\\n\" , ins . channel ) ; return - EINVAL ; } ins . key = format ; return store_instr ( ins . channel , & ins ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * addr , <S2SV_ModEnd> int count , <S2SV_ModStart> copy_from_user ( & ins , addr <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> ( ins ) <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { DelogoContext * s = inlink -> dst -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; const AVPixFmtDescriptor * desc = av_pix_fmt_desc_get ( inlink -> format ) ; AVFrame * out ; int hsub0 = desc -> log2_chroma_w ; int vsub0 = desc -> log2_chroma_h ; int direct = 0 ; int plane ; AVRational sar ; if ( av_frame_is_writable ( in ) ) { direct = 1 ; out = in ; } else { out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; } sar = in -> sample_aspect_ratio ; if ( ! sar . num ) sar . num = sar . den = 1 ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && in -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> int hsub = plane == 1 || plane == 2 ? hsub0 : 0 ; int vsub = plane == 1 || plane == 2 ? vsub0 : 0 ; apply_delogo ( out -> data [ plane ] , out -> linesize [ plane ] , in -> data [ plane ] , in -> linesize [ plane ] , FF_CEIL_RSHIFT ( inlink -> w , hsub ) , FF_CEIL_RSHIFT ( inlink -> h , vsub ) , sar , s -> x >> hsub , s -> y >> vsub , FF_CEIL_RSHIFT ( s -> w + ( s -> x & ( ( 1 << hsub ) - 1 ) ) , hsub ) , FF_CEIL_RSHIFT ( s -> h + ( s -> y & ( ( 1 << vsub ) - 1 ) ) , vsub ) , s -> band >> FFMIN ( hsub , vsub ) , s -> show , direct ) ; } if ( ! direct ) av_frame_free ( & in ) ; return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in -> data [ plane ] && in -> linesize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12458\n\n```\nCWE-20 static void mpeg4_encode_gop_header ( MpegEncContext * s ) { <S2SV_StartBug> int hours , minutes , seconds ; <S2SV_EndBug> int64_t time ; put_bits ( & s -> pb , 16 , 0 ) ; put_bits ( & s -> pb , 16 , GOP_STARTCODE ) ; time = s -> current_picture_ptr -> f -> pts ; if ( s -> reordered_input_picture [ 1 ] ) time = FFMIN ( time , s -> reordered_input_picture [ 1 ] -> f -> pts ) ; time = time * s -> avctx -> time_base . num ; s -> last_time_base = FFUDIV ( time , s -> avctx -> time_base . den ) ; seconds = FFUDIV ( time , s -> avctx -> time_base . den ) ; minutes = FFUDIV ( seconds , 60 ) ; seconds = FFUMOD ( seconds , 60 ) ; hours = FFUDIV ( minutes , 60 ) ; minutes = FFUMOD ( minutes , 60 ) ; hours = FFUMOD ( hours , 24 ) ; put_bits ( & s -> pb , 5 , hours ) ; put_bits ( & s -> pb , 6 , minutes ) ; put_bits ( & s -> pb , 1 , 1 ) ; put_bits ( & s -> pb , 6 , seconds ) ; put_bits ( & s -> pb , 1 , ! ! ( s -> avctx -> flags & AV_CODEC_FLAG_CLOSED_GOP ) ) ; put_bits ( & s -> pb , 1 , 0 ) ; ff_mpeg4_stuffing ( & s -> pb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { int64_t <S2SV_ModEnd> hours , minutes\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 node * PyParser_ParseFileObject ( FILE * fp , PyObject * filename , const char * enc , grammar * g , int start , const char * ps1 , const char * ps2 , perrdetail * err_ret , int * flags ) { struct tok_state * tok ; if ( initerr ( err_ret , filename ) < 0 ) return NULL ; if ( ( tok = PyTokenizer_FromFile ( fp , enc , ps1 , ps2 ) ) == NULL ) { err_ret -> error = E_NOMEM ; return NULL ; } <S2SV_StartBug> # ifndef PGEN <S2SV_EndBug> Py_INCREF ( err_ret -> filename ) ; tok -> filename = err_ret -> filename ; # endif return parsetok ( tok , g , start , err_ret , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } if ( * flags & PyPARSE_TYPE_COMMENTS ) { tok -> type_comments = 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * kye_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { switch ( hdev -> product ) { case USB_DEVICE_ID_KYE_ERGO_525V : <S2SV_StartBug> if ( * rsize >= 74 && <S2SV_EndBug> <S2SV_StartBug> rdesc [ 61 ] == 0x05 && rdesc [ 62 ] == 0x08 && <S2SV_EndBug> rdesc [ 63 ] == 0x19 && rdesc [ 64 ] == 0x08 && rdesc [ 65 ] == 0x29 && rdesc [ 66 ] == 0x0f && rdesc [ 71 ] == 0x75 && rdesc [ 72 ] == 0x08 && rdesc [ 73 ] == 0x95 && rdesc [ 74 ] == 0x01 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Kye/Genius<S2SV_blank>Ergo<S2SV_blank>Mouse<S2SV_blank>\" \"report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 62 ] = 0x09 ; rdesc [ 64 ] = 0x04 ; rdesc [ 66 ] = 0x07 ; rdesc [ 72 ] = 0x01 ; rdesc [ 74 ] = 0x08 ; } break ; case USB_DEVICE_ID_KYE_EASYPEN_I405X : if ( * rsize == EASYPEN_I405X_RDESC_ORIG_SIZE ) { rdesc = easypen_i405x_rdesc_fixed ; * rsize = sizeof ( easypen_i405x_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_KYE_MOUSEPEN_I608X : if ( * rsize == MOUSEPEN_I608X_RDESC_ORIG_SIZE ) { rdesc = mousepen_i608x_rdesc_fixed ; * rsize = sizeof ( mousepen_i608x_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_KYE_EASYPEN_M610X : if ( * rsize == EASYPEN_M610X_RDESC_ORIG_SIZE ) { rdesc = easypen_m610x_rdesc_fixed ; * rsize = sizeof ( easypen_m610x_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE : rdesc = kye_consumer_control_fixup ( hdev , rdesc , rsize , 104 , \"Genius<S2SV_blank>Gila<S2SV_blank>Gaming<S2SV_blank>Mouse\" ) ; break ; case USB_DEVICE_ID_GENIUS_GX_IMPERATOR : rdesc = kye_consumer_control_fixup ( hdev , rdesc , rsize , 83 , \"Genius<S2SV_blank>Gx<S2SV_blank>Imperator<S2SV_blank>Keyboard\" ) ; break ; case USB_DEVICE_ID_GENIUS_MANTICORE : rdesc = kye_consumer_control_fixup ( hdev , rdesc , rsize , 104 , \"Genius<S2SV_blank>Manticore<S2SV_blank>Keyboard\" ) ; break ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 75 && rdesc [ 61 ] == 0x05 && rdesc [ 62 ] == 0x08 && rdesc [ 63 ] == 0x19 && rdesc [ 64 ] == 0x08 && rdesc [ 65 ] == 0x29 && rdesc [ 66 ] == 0x0f && rdesc [ 71 ] == 0x75 && rdesc [ 72 ] == 0x08 && rdesc [ 73 ] == 0x95 && rdesc [ 74 ] == 0x01 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Kye/Genius<S2SV_blank>Ergo<S2SV_blank>Mouse<S2SV_blank>\" \"report<S2SV_blank>descriptor\\\\n\" ) ; <S2SV_ModEnd> rdesc [ 62 <S2SV_ModStart> [ 62 ] = 0x09 ; rdesc [ 64 ] = 0x04 ; rdesc [ 66 ] = 0x07 ; rdesc [ 72 ] = 0x01 ; rdesc [ 74 ] = 0x08 <S2SV_ModEnd> ; } break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11142\n\n```\nCWE-400 static zend_bool add_post_var ( zval * arr , post_var_data_t * var , zend_bool eof TSRMLS_DC ) { <S2SV_StartBug> char * ksep , * vsep , * val ; <S2SV_EndBug> size_t klen , vlen ; unsigned int new_vlen ; if ( var -> ptr >= var -> end ) { return 0 ; } <S2SV_StartBug> vsep = memchr ( var -> ptr , '&' , var -> end - var -> ptr ) ; <S2SV_EndBug> if ( ! vsep ) { <S2SV_StartBug> if ( ! eof ) { <S2SV_EndBug> return 0 ; } else { vsep = var -> end ; } } ksep = memchr ( var -> ptr , '=' , vsep - var -> ptr ) ; if ( ksep ) { * ksep = '\\\\0' ; klen = ksep - var -> ptr ; vlen = vsep - ++ ksep ; } else { ksep = \"\" ; klen = vsep - var -> ptr ; vlen = 0 ; } php_url_decode ( var -> ptr , klen ) ; val = estrndup ( ksep , vlen ) ; if ( vlen ) { vlen = php_url_decode ( val , vlen ) ; } if ( sapi_module . input_filter ( PARSE_POST , var -> ptr , & val , vlen , & new_vlen TSRMLS_CC ) ) { php_register_variable_safe ( var -> ptr , val , new_vlen , arr TSRMLS_CC ) ; } efree ( val ) ; var -> ptr = vsep + ( vsep != var -> end ) ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { char * start , * <S2SV_ModStart> 0 ; } start = var -> ptr + var -> already_scanned ; <S2SV_ModStart> = memchr ( start <S2SV_ModEnd> , '&' , <S2SV_ModStart> -> end - start <S2SV_ModEnd> ) ; if <S2SV_ModStart> eof ) { var -> already_scanned = var -> end - var -> ptr ; <S2SV_ModStart> end ) ; var -> already_scanned = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15148\n\n```\nCWE-787 uint32_t * GetPayload ( size_t handle , uint32_t * lastpayload , uint32_t index ) { mp4object * mp4 = ( mp4object * ) handle ; if ( mp4 == NULL ) return NULL ; uint32_t * MP4buffer = NULL ; if ( index < mp4 -> indexcount && mp4 -> mediafp ) { MP4buffer = ( uint32_t * ) realloc ( ( void * ) lastpayload , mp4 -> metasizes [ index ] ) ; if ( MP4buffer ) { <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , mp4 -> metaoffsets [ index ] , SEEK_SET ) ; <S2SV_EndBug> fread ( MP4buffer , 1 , mp4 -> metasizes [ index ] , mp4 -> mediafp ) ; <S2SV_StartBug> return MP4buffer ; <S2SV_EndBug> } } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MP4buffer ) { if ( mp4 -> filesize > mp4 -> metaoffsets [ index ] + mp4 -> metasizes [ index ] ) { <S2SV_ModStart> mediafp ) ; mp4 -> filepos = mp4 -> metaoffsets [ index ] + mp4 -> metasizes [ index ] ; <S2SV_ModStart> return MP4buffer ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 vpx_codec_err_t vp9_set_reference_dec ( VP9_COMMON * cm , VP9_REFFRAME ref_frame_flag , YV12_BUFFER_CONFIG * sd ) { <S2SV_StartBug> RefBuffer * ref_buf = NULL ; <S2SV_EndBug> if ( ref_frame_flag == VP9_LAST_FLAG ) { ref_buf = & cm -> frame_refs [ 0 ] ; } else if ( ref_frame_flag == VP9_GOLD_FLAG ) { ref_buf = & cm -> frame_refs [ 1 ] ; } else if ( ref_frame_flag == VP9_ALT_FLAG ) { ref_buf = & cm -> frame_refs [ 2 ] ; } else { vpx_internal_error ( & cm -> error , VPX_CODEC_ERROR , \"Invalid<S2SV_blank>reference<S2SV_blank>frame\" ) ; return cm -> error . error_code ; } if ( ! equal_dimensions ( ref_buf -> buf , sd ) ) { vpx_internal_error ( & cm -> error , VPX_CODEC_ERROR , \"Incorrect<S2SV_blank>buffer<S2SV_blank>dimensions\" ) ; } else { int * ref_fb_ptr = & ref_buf -> idx ; const int free_fb = get_free_fb ( cm ) ; <S2SV_StartBug> cm -> frame_bufs [ free_fb ] . ref_count -- ; <S2SV_EndBug> <S2SV_StartBug> ref_cnt_fb ( cm -> frame_bufs , ref_fb_ptr , free_fb ) ; <S2SV_EndBug> <S2SV_StartBug> ref_buf -> buf = & cm -> frame_bufs [ * ref_fb_ptr ] . buf ; <S2SV_EndBug> vp8_yv12_copy_frame ( sd , ref_buf -> buf ) ; } return cm -> error . error_code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ref_buf = NULL ; RefCntBuffer * const frame_bufs = cm -> buffer_pool -> frame_bufs <S2SV_ModStart> cm ) ; if ( cm -> new_fb_idx == INVALID_IDX ) return VPX_CODEC_MEM_ERROR ; -- <S2SV_ModEnd> frame_bufs [ free_fb <S2SV_ModStart> ] . ref_count <S2SV_ModEnd> ; ref_cnt_fb ( <S2SV_ModStart> ; ref_cnt_fb ( <S2SV_ModEnd> frame_bufs , ref_fb_ptr <S2SV_ModStart> buf = & <S2SV_ModEnd> frame_bufs [ *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0550\n\n```\nCWE-000 WORD32 ih264d_parse_islice_data_cavlc ( dec_struct_t * ps_dec , dec_slice_params_t * ps_slice , UWORD16 u2_first_mb_in_slice ) { UWORD8 uc_more_data_flag ; UWORD8 u1_num_mbs , u1_mb_idx ; dec_mb_info_t * ps_cur_mb_info ; deblk_mb_t * ps_cur_deblk_mb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD16 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; WORD16 i2_cur_mb_addr ; UWORD8 u1_mbaff ; UWORD8 u1_num_mbs_next , u1_end_of_row , u1_tfr_n_mb ; WORD32 ret = OK ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; u1_mb_idx = ps_dec -> u1_mb_idx ; u1_num_mbs = u1_mb_idx ; uc_more_data_flag = 1 ; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff ; do { UWORD8 u1_mb_type ; ps_dec -> pv_prev_mb_parse_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) { ret = ERROR_MB_ADDRESS_T ; break ; } ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_dec -> pf_get_mb_info ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , 0 ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; ps_cur_deblk_mb -> u1_mb_type = ps_cur_deblk_mb -> u1_mb_type | D_INTRA_MB ; { UWORD32 u4_bitstream_offset = * pu4_bitstrm_ofst ; UWORD32 u4_word , u4_ldz , u4_temp ; NEXTBITS_32 ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_ldz = CLZ ( u4_word ) ; u4_bitstream_offset += ( u4_ldz + 1 ) ; u4_word = 0 ; if ( u4_ldz ) GETBITS ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf , u4_ldz ) ; * pu4_bitstrm_ofst = u4_bitstream_offset ; u4_temp = ( ( 1 << u4_ldz ) + u4_word - 1 ) ; if ( u4_temp > 25 ) return ERROR_MB_TYPE ; u1_mb_type = u4_temp ; } ps_cur_mb_info -> u1_mb_type = u1_mb_type ; COPYTHECONTEXT ( \"u1_mb_type\" , u1_mb_type ) ; if ( 25 == u1_mb_type ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = I_PCM_MB ; ret = ih264d_parse_ipcm_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = 0 ; } else { ret = ih264d_parse_imb_cavlc ( ps_dec , ps_cur_mb_info , u1_num_mbs , u1_mb_type ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; } if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; <S2SV_StartBug> } <S2SV_EndBug> i2_cur_mb_addr ++ ; uc_more_data_flag = MORE_RBSP_DATA ( ps_bitstrm ) ; { mv_pred_t * ps_mv_nmb_start = ps_dec -> ps_mv_cur + ( u1_num_mbs << 4 ) ; mv_pred_t s_mvPred = { { 0 , 0 , 0 , 0 } , { - 1 , - 1 } , 0 , 0 } ; ih264d_rep_mv_colz ( ps_dec , & s_mvPred , ps_mv_nmb_start , 0 , ( UWORD8 ) ( ps_dec -> u1_cur_mb_fld_dec_flag << 1 ) , 4 , 4 ) ; } if ( ps_dec -> u4_num_cores < 3 ) { if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ps_dec -> pf_compute_bs ( ps_dec , ps_cur_mb_info , ( UWORD16 ) ( u1_num_mbs >> u1_mbaff ) ) ; } u1_num_mbs ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || ( ! uc_more_data_flag ) ; ps_cur_mb_info -> u1_end_of_slice = ( ! uc_more_data_flag ) ; if ( u1_tfr_n_mb || ( ! uc_more_data_flag ) ) { if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; if ( u1_tfr_n_mb ) u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } while ( uc_more_data_flag ) ; ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ( u2_first_mb_in_slice << u1_mbaff ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ps_cur_mb_info ) ; if ( ! uc_more_data_flag && ( 0 == ( i2_cur_mb_addr & 1 ) ) ) { return ERROR_EOB_FLUSHBITS_T ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int write_skip ( const VP9_COMP * cpi , int segment_id , const MODE_INFO * mi , <S2SV_EndBug> <S2SV_StartBug> vp9_writer * w ) { <S2SV_EndBug> <S2SV_StartBug> const MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> if ( vp9_segfeature_active ( & cpi -> common . seg , segment_id , SEG_LVL_SKIP ) ) { return 1 ; } else { const int skip = mi -> mbmi . skip ; <S2SV_StartBug> vp9_write ( w , skip , vp9_get_skip_prob ( & cpi -> common , xd ) ) ; <S2SV_EndBug> return skip ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> write_skip ( const VP9_COMMON * cm , const MACROBLOCKD * xd , <S2SV_ModEnd> int segment_id , <S2SV_ModStart> * mi , vpx_writer <S2SV_ModEnd> * w ) <S2SV_ModStart> w ) { if ( segfeature_active ( & cm -> <S2SV_ModEnd> seg , segment_id <S2SV_ModStart> . skip ; vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> , vp9_get_skip_prob ( cm <S2SV_ModEnd> , xd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13037\n\n```\nCWE-125 static void ip_optprint ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register u_int option_len ; const char * sep = \"\" ; for ( ; length > 0 ; cp += option_len , length -= option_len ) { u_int option_code ; ND_PRINT ( ( ndo , \"%s\" , sep ) ) ; sep = \",\" ; ND_TCHECK ( * cp ) ; option_code = * cp ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( ip_option_values , \"unknown<S2SV_blank>%u\" , option_code ) ) ) ; if ( option_code == IPOPT_NOP || option_code == IPOPT_EOL ) option_len = 1 ; else { ND_TCHECK ( cp [ 1 ] ) ; option_len = cp [ 1 ] ; if ( option_len < 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; return ; } } if ( option_len > length ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; return ; } ND_TCHECK2 ( * cp , option_len ) ; switch ( option_code ) { case IPOPT_EOL : return ; case IPOPT_TS : <S2SV_StartBug> ip_printts ( ndo , cp , option_len ) ; <S2SV_EndBug> break ; case IPOPT_RR : case IPOPT_SSRR : case IPOPT_LSRR : if ( ip_printroute ( ndo , cp , option_len ) == - 1 ) goto trunc ; break ; <S2SV_StartBug> case IPOPT_RA : <S2SV_EndBug> if ( option_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; break ; } ND_TCHECK ( cp [ 3 ] ) ; if ( EXTRACT_16BITS ( & cp [ 2 ] ) != 0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>value<S2SV_blank>%u\" , EXTRACT_16BITS ( & cp [ 2 ] ) ) ) ; break ; case IPOPT_NOP : case IPOPT_SECURITY : default : break ; } } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case IPOPT_TS : if ( ip_printts <S2SV_ModEnd> ( ndo , <S2SV_ModStart> break ; case IPOPT_RR : case IPOPT_SSRR : case IPOPT_LSRR : if ( ip_printroute ( ndo , cp , option_len ) == - 1 ) goto trunc ; break ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static int check_entry_size_and_hooks ( struct ip6t_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ip6t_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct ip6t_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ip6t_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { <S2SV_StartBug> pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" <S2SV_EndBug> \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { pr_debug <S2SV_ModEnd> ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 static void kvmclock_reset ( struct kvm_vcpu * vcpu ) { <S2SV_StartBug> if ( vcpu -> arch . time_page ) { <S2SV_EndBug> kvm_release_page_dirty ( vcpu -> arch . time_page ) ; vcpu -> arch . time_page = NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu ) { <S2SV_ModEnd> vcpu -> arch <S2SV_ModStart> -> arch . pv_time_enabled = false ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9120\n\n```\nCWE-264 static long ion_ioctl ( struct file * filp , unsigned int cmd , unsigned long arg ) { struct ion_client * client = filp -> private_data ; struct ion_device * dev = client -> dev ; struct ion_handle * cleanup_handle = NULL ; int ret = 0 ; unsigned int dir ; union { struct ion_fd_data fd ; struct ion_allocation_data allocation ; struct ion_handle_data handle ; struct ion_custom_data custom ; } data ; dir = ion_ioctl_dir ( cmd ) ; if ( _IOC_SIZE ( cmd ) > sizeof ( data ) ) return - EINVAL ; if ( dir & _IOC_WRITE ) if ( copy_from_user ( & data , ( void __user * ) arg , _IOC_SIZE ( cmd ) ) ) return - EFAULT ; switch ( cmd ) { case ION_IOC_ALLOC : { struct ion_handle * handle ; handle = ion_alloc ( client , data . allocation . len , data . allocation . align , data . allocation . heap_id_mask , data . allocation . flags ) ; if ( IS_ERR ( handle ) ) return PTR_ERR ( handle ) ; data . allocation . handle = handle -> id ; cleanup_handle = handle ; break ; } case ION_IOC_FREE : { struct ion_handle * handle ; <S2SV_StartBug> handle = ion_handle_get_by_id ( client , data . handle . handle ) ; <S2SV_EndBug> <S2SV_StartBug> if ( IS_ERR ( handle ) ) <S2SV_EndBug> return PTR_ERR ( handle ) ; <S2SV_StartBug> ion_free ( client , handle ) ; <S2SV_EndBug> ion_handle_put ( handle ) ; break ; } case ION_IOC_SHARE : case ION_IOC_MAP : { struct ion_handle * handle ; handle = ion_handle_get_by_id ( client , data . handle . handle ) ; if ( IS_ERR ( handle ) ) return PTR_ERR ( handle ) ; data . fd . fd = ion_share_dma_buf_fd ( client , handle ) ; ion_handle_put ( handle ) ; if ( data . fd . fd < 0 ) ret = data . fd . fd ; break ; } case ION_IOC_IMPORT : { struct ion_handle * handle ; handle = ion_import_dma_buf_fd ( client , data . fd . fd ) ; if ( IS_ERR ( handle ) ) ret = PTR_ERR ( handle ) ; else data . handle . handle = handle -> id ; break ; } case ION_IOC_SYNC : { ret = ion_sync_for_device ( client , data . fd . fd ) ; break ; } case ION_IOC_CUSTOM : { if ( ! dev -> custom_ioctl ) return - ENOTTY ; ret = dev -> custom_ioctl ( client , data . custom . cmd , data . custom . arg ) ; break ; } default : return - ENOTTY ; } if ( dir & _IOC_READ ) { if ( copy_to_user ( ( void __user * ) arg , & data , _IOC_SIZE ( cmd ) ) ) { if ( cleanup_handle ) ion_free ( client , cleanup_handle ) ; return - EFAULT ; } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * handle ; mutex_lock ( & client -> lock ) ; handle = ion_handle_get_by_id_nolock <S2SV_ModEnd> ( client , <S2SV_ModStart> handle ) ) { mutex_unlock ( & client -> lock ) ; <S2SV_ModStart> handle ) ; } ion_free_nolock ( client , handle ) ; ion_handle_put_nolock ( handle ) ; mutex_unlock ( & client -> lock <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15274\n\n```\nCWE-476 long keyctl_update_key ( key_serial_t id , const void __user * _payload , size_t plen ) { key_ref_t key_ref ; void * payload ; long ret ; ret = - EINVAL ; if ( plen > PAGE_SIZE ) goto error ; payload = NULL ; <S2SV_StartBug> if ( _payload ) { <S2SV_EndBug> ret = - ENOMEM ; payload = kmalloc ( plen , GFP_KERNEL ) ; if ( ! payload ) goto error ; ret = - EFAULT ; if ( copy_from_user ( payload , _payload , plen ) != 0 ) goto error2 ; } key_ref = lookup_user_key ( id , 0 , KEY_NEED_WRITE ) ; if ( IS_ERR ( key_ref ) ) { ret = PTR_ERR ( key_ref ) ; goto error2 ; } ret = key_update ( key_ref , payload , plen ) ; key_ref_put ( key_ref ) ; error2 : kfree ( payload ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( plen <S2SV_ModEnd> ) { ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr3_leaf_clearflag ( struct xfs_da_args * args ) { struct xfs_attr_leafblock * leaf ; struct xfs_attr_leaf_entry * entry ; struct xfs_attr_leaf_name_remote * name_rmt ; struct xfs_buf * bp ; int error ; # ifdef DEBUG struct xfs_attr3_icleaf_hdr ichdr ; xfs_attr_leaf_name_local_t * name_loc ; int namelen ; char * name ; # endif trace_xfs_attr_leaf_clearflag ( args ) ; error = xfs_attr3_leaf_read ( args -> trans , args -> dp , args -> blkno , - 1 , & bp ) ; if ( error ) return ( error ) ; leaf = bp -> b_addr ; entry = & xfs_attr3_leaf_entryp ( leaf ) [ args -> index ] ; ASSERT ( entry -> flags & XFS_ATTR_INCOMPLETE ) ; # ifdef DEBUG xfs_attr3_leaf_hdr_from_disk ( & ichdr , leaf ) ; ASSERT ( args -> index < ichdr . count ) ; ASSERT ( args -> index >= 0 ) ; if ( entry -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf , args -> index ) ; namelen = name_loc -> namelen ; name = ( char * ) name_loc -> nameval ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf , args -> index ) ; namelen = name_rmt -> namelen ; name = ( char * ) name_rmt -> name ; } ASSERT ( be32_to_cpu ( entry -> hashval ) == args -> hashval ) ; ASSERT ( namelen == args -> namelen ) ; ASSERT ( memcmp ( name , args -> name , namelen ) == 0 ) ; # endif entry -> flags &= ~ XFS_ATTR_INCOMPLETE ; xfs_trans_log_buf ( args -> trans , bp , XFS_DA_LOGRANGE ( leaf , entry , sizeof ( * entry ) ) ) ; if ( args -> rmtblkno ) { ASSERT ( ( entry -> flags & XFS_ATTR_LOCAL ) == 0 ) ; name_rmt = xfs_attr3_leaf_name_remote ( leaf , args -> index ) ; name_rmt -> valueblk = cpu_to_be32 ( args -> rmtblkno ) ; <S2SV_StartBug> name_rmt -> valuelen = cpu_to_be32 ( args -> valuelen ) ; <S2SV_EndBug> xfs_trans_log_buf ( args -> trans , bp , XFS_DA_LOGRANGE ( leaf , name_rmt , sizeof ( * name_rmt ) ) ) ; } return xfs_trans_roll ( & args -> trans , args -> dp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( args -> rmtvaluelen <S2SV_ModEnd> ) ; xfs_trans_log_buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 asmlinkage void do_sparc_fault ( struct pt_regs * regs , int text_fault , int write , unsigned long address ) { struct vm_area_struct * vma ; struct task_struct * tsk = current ; struct mm_struct * mm = tsk -> mm ; unsigned int fixup ; unsigned long g2 ; int from_user = ! ( regs -> psr & PSR_PS ) ; int fault , code ; if ( text_fault ) address = regs -> pc ; code = SEGV_MAPERR ; if ( ! ARCH_SUN4C && address >= TASK_SIZE ) goto vmalloc_fault ; if ( in_atomic ( ) || ! mm ) goto no_context ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_PAGE_FAULTS , 1 , 0 , regs , address ) ; <S2SV_EndBug> down_read ( & mm -> mmap_sem ) ; if ( ! from_user && address >= PAGE_OFFSET ) goto bad_area ; vma = find_vma ( mm , address ) ; if ( ! vma ) goto bad_area ; if ( vma -> vm_start <= address ) goto good_area ; if ( ! ( vma -> vm_flags & VM_GROWSDOWN ) ) goto bad_area ; if ( expand_stack ( vma , address ) ) goto bad_area ; good_area : code = SEGV_ACCERR ; if ( write ) { if ( ! ( vma -> vm_flags & VM_WRITE ) ) goto bad_area ; } else { if ( ! ( vma -> vm_flags & ( VM_READ | VM_EXEC ) ) ) goto bad_area ; } fault = handle_mm_fault ( mm , vma , address , write ? FAULT_FLAG_WRITE : 0 ) ; if ( unlikely ( fault & VM_FAULT_ERROR ) ) { if ( fault & VM_FAULT_OOM ) goto out_of_memory ; else if ( fault & VM_FAULT_SIGBUS ) goto do_sigbus ; BUG ( ) ; } if ( fault & VM_FAULT_MAJOR ) { current -> maj_flt ++ ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_PAGE_FAULTS_MAJ , 1 , 0 , <S2SV_EndBug> regs , address ) ; } else { current -> min_flt ++ ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_PAGE_FAULTS_MIN , 1 , 0 , <S2SV_EndBug> regs , address ) ; } up_read ( & mm -> mmap_sem ) ; return ; bad_area : up_read ( & mm -> mmap_sem ) ; bad_area_nosemaphore : if ( from_user ) { do_fault_siginfo ( code , SIGSEGV , regs , text_fault ) ; return ; } no_context : g2 = regs -> u_regs [ UREG_G2 ] ; if ( ! from_user ) { fixup = search_extables_range ( regs -> pc , & g2 ) ; if ( fixup > 10 ) { extern const unsigned __memset_start [ ] ; extern const unsigned __memset_end [ ] ; extern const unsigned __csum_partial_copy_start [ ] ; extern const unsigned __csum_partial_copy_end [ ] ; # ifdef DEBUG_EXCEPTIONS printk ( \"Exception:<S2SV_blank>PC<%08lx><S2SV_blank>faddr<%08lx>\\\\n\" , regs -> pc , address ) ; printk ( \"EX_TABLE:<S2SV_blank>insn<%08lx><S2SV_blank>fixup<%08x><S2SV_blank>g2<%08lx>\\\\n\" , regs -> pc , fixup , g2 ) ; # endif if ( ( regs -> pc >= ( unsigned long ) __memset_start && regs -> pc < ( unsigned long ) __memset_end ) || ( regs -> pc >= ( unsigned long ) __csum_partial_copy_start && regs -> pc < ( unsigned long ) __csum_partial_copy_end ) ) { regs -> u_regs [ UREG_I4 ] = address ; regs -> u_regs [ UREG_I5 ] = regs -> pc ; } regs -> u_regs [ UREG_G2 ] = g2 ; regs -> pc = fixup ; regs -> npc = regs -> pc + 4 ; return ; } } unhandled_fault ( address , tsk , regs ) ; do_exit ( SIGKILL ) ; out_of_memory : up_read ( & mm -> mmap_sem ) ; if ( from_user ) { pagefault_out_of_memory ( ) ; return ; } goto no_context ; do_sigbus : up_read ( & mm -> mmap_sem ) ; do_fault_siginfo ( BUS_ADRERR , SIGBUS , regs , text_fault ) ; if ( ! from_user ) goto no_context ; vmalloc_fault : { int offset = pgd_index ( address ) ; pgd_t * pgd , * pgd_k ; pmd_t * pmd , * pmd_k ; pgd = tsk -> active_mm -> pgd + offset ; pgd_k = init_mm . pgd + offset ; if ( ! pgd_present ( * pgd ) ) { if ( ! pgd_present ( * pgd_k ) ) goto bad_area_nosemaphore ; pgd_val ( * pgd ) = pgd_val ( * pgd_k ) ; return ; } pmd = pmd_offset ( pgd , address ) ; pmd_k = pmd_offset ( pgd_k , address ) ; if ( pmd_present ( * pmd ) || ! pmd_present ( * pmd_k ) ) goto bad_area_nosemaphore ; * pmd = * pmd_k ; return ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_PAGE_FAULTS , 1 <S2SV_ModEnd> , regs , <S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , address <S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , address\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int sanitize_ptr_alu ( struct bpf_verifier_env * env , struct bpf_insn * insn , const struct bpf_reg_state * ptr_reg , struct bpf_reg_state * dst_reg , bool off_is_neg ) { struct bpf_verifier_state * vstate = env -> cur_state ; struct bpf_insn_aux_data * aux = cur_aux ( env ) ; bool ptr_is_dst_reg = ptr_reg == dst_reg ; u8 opcode = BPF_OP ( insn -> code ) ; u32 alu_state , alu_limit ; struct bpf_reg_state tmp ; bool ret ; <S2SV_StartBug> if ( env -> allow_ptr_leaks || BPF_SRC ( insn -> code ) == BPF_K ) <S2SV_EndBug> return 0 ; if ( vstate -> speculative ) goto do_sim ; alu_state = off_is_neg ? BPF_ALU_NEG_VALUE : 0 ; alu_state |= ptr_is_dst_reg ? BPF_ALU_SANITIZE_SRC : BPF_ALU_SANITIZE_DST ; if ( retrieve_ptr_limit ( ptr_reg , & alu_limit , opcode , off_is_neg ) ) return 0 ; <S2SV_StartBug> if ( aux -> alu_state && <S2SV_EndBug> ( aux -> alu_state != alu_state || aux -> alu_limit != alu_limit ) ) <S2SV_StartBug> return - EACCES ; <S2SV_EndBug> aux -> alu_state = alu_state ; aux -> alu_limit = alu_limit ; do_sim : if ( ! ptr_is_dst_reg ) { tmp = * dst_reg ; * dst_reg = * ptr_reg ; } ret = push_stack ( env , env -> insn_idx + 1 , env -> insn_idx , true ) ; if ( ! ptr_is_dst_reg ) * dst_reg = tmp ; return ! ret ? - EFAULT : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( can_skip_alu_sanitation ( env , insn ) <S2SV_ModEnd> ) return 0 <S2SV_ModStart> ; if ( update_alu_sanitation_state ( aux , alu_state , <S2SV_ModEnd> alu_limit ) ) <S2SV_ModStart> return - EACCES <S2SV_ModEnd> ; do_sim :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_alias ( PyObject * obj , alias_ty * out , PyArena * arena ) { PyObject * tmp = NULL ; identifier name ; identifier asname ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_name ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_name ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_identifier ( tmp , & name , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>alias\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_asname ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_asname ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_identifier ( tmp , & asname , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { asname = NULL ; } * out = alias ( name , asname , arena ) ; return 0 ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_name , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>alias\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 <S2SV_ModEnd> ) goto failed <S2SV_ModStart> goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_asname , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; asname = NULL ; } else { int res ; <S2SV_ModStart> tmp , & asname <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } <S2SV_ModEnd> * out =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12465\n\n```\nCWE-120 static void mt76_add_fragment ( struct mt76_dev * dev , struct mt76_queue * q , void * data , int len , bool more ) { struct page * page = virt_to_head_page ( data ) ; int offset = data - page_address ( page ) ; struct sk_buff * skb = q -> rx_head ; <S2SV_StartBug> offset += q -> buf_offset ; <S2SV_EndBug> <S2SV_StartBug> skb_add_rx_frag ( skb , skb_shinfo ( skb ) -> nr_frags , page , offset , len , <S2SV_EndBug> <S2SV_StartBug> q -> buf_size ) ; <S2SV_EndBug> if ( more ) return ; q -> rx_head = NULL ; dev -> drv -> rx_skb ( dev , q - dev -> q_rx , skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rx_head ; struct skb_shared_info * shinfo = skb_shinfo ( skb ) ; if ( shinfo -> nr_frags < ARRAY_SIZE ( shinfo -> frags ) ) { <S2SV_ModStart> ( skb , shinfo <S2SV_ModEnd> -> nr_frags , <S2SV_ModStart> buf_size ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-120 <S2SV_StartBug> int mutt_b64_decode ( char * out , const char * in ) <S2SV_EndBug> { int len = 0 ; unsigned char digit4 ; do { const unsigned char digit1 = in [ 0 ] ; if ( ( digit1 > 127 ) || ( base64val ( digit1 ) == BAD ) ) return - 1 ; const unsigned char digit2 = in [ 1 ] ; if ( ( digit2 > 127 ) || ( base64val ( digit2 ) == BAD ) ) return - 1 ; const unsigned char digit3 = in [ 2 ] ; if ( ( digit3 > 127 ) || ( ( digit3 != '=' ) && ( base64val ( digit3 ) == BAD ) ) ) return - 1 ; digit4 = in [ 3 ] ; if ( ( digit4 > 127 ) || ( ( digit4 != '=' ) && ( base64val ( digit4 ) == BAD ) ) ) return - 1 ; in += 4 ; <S2SV_StartBug> * out ++ = ( base64val ( digit1 ) << 2 ) | ( base64val ( digit2 ) >> 4 ) ; <S2SV_EndBug> len ++ ; if ( digit3 != '=' ) { <S2SV_StartBug> * out ++ = ( ( base64val ( digit2 ) << 4 ) & 0xf0 ) | ( base64val ( digit3 ) >> 2 ) ; <S2SV_EndBug> len ++ ; if ( digit4 != '=' ) { <S2SV_StartBug> * out ++ = ( ( base64val ( digit3 ) << 6 ) & 0xc0 ) | base64val ( digit4 ) ; <S2SV_EndBug> len ++ ; } } } while ( * in && digit4 != '=' ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * in , size_t olen <S2SV_ModStart> += 4 ; if ( len == olen ) return len ; <S2SV_ModStart> '=' ) { if ( len == olen ) return len ; <S2SV_ModStart> '=' ) { if ( len == olen ) return len ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5207\n\n```\nCWE-264 static int do_remount ( struct path * path , int flags , int mnt_flags , void * data ) { int err ; struct super_block * sb = path -> mnt -> mnt_sb ; struct mount * mnt = real_mount ( path -> mnt ) ; if ( ! check_mnt ( mnt ) ) return - EINVAL ; if ( path -> dentry != path -> mnt -> mnt_root ) return - EINVAL ; if ( ( mnt -> mnt . mnt_flags & MNT_LOCK_READONLY ) && ! ( mnt_flags & MNT_READONLY ) ) { return - EPERM ; } <S2SV_StartBug> err = security_sb_remount ( sb , data ) ; <S2SV_EndBug> if ( err ) return err ; down_write ( & sb -> s_umount ) ; if ( flags & MS_BIND ) err = change_mount_flags ( path -> mnt , flags ) ; else if ( ! capable ( CAP_SYS_ADMIN ) ) err = - EPERM ; else err = do_remount_sb ( sb , flags , data , 0 ) ; if ( ! err ) { lock_mount_hash ( ) ; mnt_flags |= mnt -> mnt . mnt_flags & ~ MNT_USER_SETTABLE_MASK ; mnt -> mnt . mnt_flags = mnt_flags ; touch_mnt_namespace ( mnt -> mnt_ns ) ; unlock_mount_hash ( ) ; } up_write ( & sb -> s_umount ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EPERM ; } if ( ( mnt -> mnt . mnt_flags & MNT_LOCK_NODEV ) && ! ( mnt_flags & MNT_NODEV ) ) { return - EPERM ; } if ( ( mnt -> mnt . mnt_flags & MNT_LOCK_NOSUID ) && ! ( mnt_flags & MNT_NOSUID ) ) { return - EPERM ; } if ( ( mnt -> mnt . mnt_flags & MNT_LOCK_NOEXEC ) && ! ( mnt_flags & MNT_NOEXEC ) ) { return - EPERM ; } if ( ( mnt -> mnt . mnt_flags & MNT_LOCK_ATIME ) && ( ( mnt -> mnt . mnt_flags & MNT_ATIME_MASK ) != ( mnt_flags & MNT_ATIME_MASK ) ) ) { return - EPERM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-354(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18672\n\n```\nCWE-354 bool recovery_cipher_abort ( void ) <S2SV_StartBug> { <S2SV_EndBug> if ( awaiting_character ) { awaiting_character = false ; return true ; } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { recovery_started = false ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18885\n\n```\nCWE-476 static noinline int btrfs_ioctl_resize ( struct file * file , void __user * arg ) { struct inode * inode = file_inode ( file ) ; struct btrfs_fs_info * fs_info = btrfs_sb ( inode -> i_sb ) ; u64 new_size ; u64 old_size ; u64 devid = 1 ; struct btrfs_root * root = BTRFS_I ( inode ) -> root ; struct btrfs_ioctl_vol_args * vol_args ; struct btrfs_trans_handle * trans ; struct btrfs_device * device = NULL ; char * sizestr ; char * retptr ; char * devstr = NULL ; int ret = 0 ; int mod = 0 ; if ( ! capable ( CAP_SYS_ADMIN ) ) return - EPERM ; ret = mnt_want_write_file ( file ) ; if ( ret ) return ret ; if ( test_and_set_bit ( BTRFS_FS_EXCL_OP , & fs_info -> flags ) ) { mnt_drop_write_file ( file ) ; return BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS ; } vol_args = memdup_user ( arg , sizeof ( * vol_args ) ) ; if ( IS_ERR ( vol_args ) ) { ret = PTR_ERR ( vol_args ) ; goto out ; } vol_args -> name [ BTRFS_PATH_NAME_MAX ] = '\\\\0' ; sizestr = vol_args -> name ; devstr = strchr ( sizestr , ':' ) ; if ( devstr ) { sizestr = devstr + 1 ; * devstr = '\\\\0' ; devstr = vol_args -> name ; ret = kstrtoull ( devstr , 10 , & devid ) ; if ( ret ) goto out_free ; if ( ! devid ) { ret = - EINVAL ; goto out_free ; } btrfs_info ( fs_info , \"resizing<S2SV_blank>devid<S2SV_blank>%llu\" , devid ) ; } <S2SV_StartBug> device = btrfs_find_device ( fs_info -> fs_devices , devid , NULL , NULL ) ; <S2SV_EndBug> if ( ! device ) { btrfs_info ( fs_info , \"resizer<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>find<S2SV_blank>device<S2SV_blank>%llu\" , devid ) ; ret = - ENODEV ; goto out_free ; } if ( ! test_bit ( BTRFS_DEV_STATE_WRITEABLE , & device -> dev_state ) ) { btrfs_info ( fs_info , \"resizer<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>on<S2SV_blank>readonly<S2SV_blank>device<S2SV_blank>%llu\" , devid ) ; ret = - EPERM ; goto out_free ; } if ( ! strcmp ( sizestr , \"max\" ) ) new_size = device -> bdev -> bd_inode -> i_size ; else { if ( sizestr [ 0 ] == '-' ) { mod = - 1 ; sizestr ++ ; } else if ( sizestr [ 0 ] == '+' ) { mod = 1 ; sizestr ++ ; } new_size = memparse ( sizestr , & retptr ) ; if ( * retptr != '\\\\0' || new_size == 0 ) { ret = - EINVAL ; goto out_free ; } } if ( test_bit ( BTRFS_DEV_STATE_REPLACE_TGT , & device -> dev_state ) ) { ret = - EPERM ; goto out_free ; } old_size = btrfs_device_get_total_bytes ( device ) ; if ( mod < 0 ) { if ( new_size > old_size ) { ret = - EINVAL ; goto out_free ; } new_size = old_size - new_size ; } else if ( mod > 0 ) { if ( new_size > ULLONG_MAX - old_size ) { ret = - ERANGE ; goto out_free ; } new_size = old_size + new_size ; } if ( new_size < SZ_256M ) { ret = - EINVAL ; goto out_free ; } if ( new_size > device -> bdev -> bd_inode -> i_size ) { ret = - EFBIG ; goto out_free ; } new_size = round_down ( new_size , fs_info -> sectorsize ) ; btrfs_info_in_rcu ( fs_info , \"new<S2SV_blank>size<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>%llu\" , rcu_str_deref ( device -> name ) , new_size ) ; if ( new_size > old_size ) { trans = btrfs_start_transaction ( root , 0 ) ; if ( IS_ERR ( trans ) ) { ret = PTR_ERR ( trans ) ; goto out_free ; } ret = btrfs_grow_device ( trans , device , new_size ) ; btrfs_commit_transaction ( trans ) ; } else if ( new_size < old_size ) { ret = btrfs_shrink_device ( device , new_size ) ; } out_free : kfree ( vol_args ) ; out : clear_bit ( BTRFS_FS_EXCL_OP , & fs_info -> flags ) ; mnt_drop_write_file ( file ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL , NULL , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35965\n\n```\nCWE-787 static int decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { EXRContext * s = avctx -> priv_data ; ThreadFrame frame = { . f = data } ; AVFrame * picture = data ; uint8_t * ptr ; int i , y , ret , ymax ; int planes ; int out_line_size ; int nb_blocks ; uint64_t start_offset_table ; uint64_t start_next_scanline ; PutByteContext offset_table_writer ; bytestream2_init ( & s -> gb , avpkt -> data , avpkt -> size ) ; if ( ( ret = decode_header ( s , picture ) ) < 0 ) return ret ; switch ( s -> pixel_type ) { case EXR_FLOAT : case EXR_HALF : if ( s -> channel_offsets [ 3 ] >= 0 ) { if ( ! s -> is_luma ) { avctx -> pix_fmt = AV_PIX_FMT_GBRAPF32 ; } else { avctx -> pix_fmt = AV_PIX_FMT_GBRAPF32 ; } } else { if ( ! s -> is_luma ) { avctx -> pix_fmt = AV_PIX_FMT_GBRPF32 ; } else { avctx -> pix_fmt = AV_PIX_FMT_GRAYF32 ; } } break ; case EXR_UINT : if ( s -> channel_offsets [ 3 ] >= 0 ) { if ( ! s -> is_luma ) { avctx -> pix_fmt = AV_PIX_FMT_RGBA64 ; } else { avctx -> pix_fmt = AV_PIX_FMT_YA16 ; } } else { if ( ! s -> is_luma ) { avctx -> pix_fmt = AV_PIX_FMT_RGB48 ; } else { avctx -> pix_fmt = AV_PIX_FMT_GRAY16 ; } } break ; default : av_log ( avctx , AV_LOG_ERROR , \"Missing<S2SV_blank>channel<S2SV_blank>list.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( s -> apply_trc_type != AVCOL_TRC_UNSPECIFIED ) avctx -> color_trc = s -> apply_trc_type ; switch ( s -> compression ) { case EXR_RAW : case EXR_RLE : case EXR_ZIP1 : s -> scan_lines_per_block = 1 ; break ; case EXR_PXR24 : case EXR_ZIP16 : s -> scan_lines_per_block = 16 ; break ; case EXR_PIZ : case EXR_B44 : case EXR_B44A : s -> scan_lines_per_block = 32 ; break ; default : avpriv_report_missing_feature ( avctx , \"Compression<S2SV_blank>%d\" , s -> compression ) ; return AVERROR_PATCHWELCOME ; } if ( s -> xmin > s -> xmax || s -> ymin > s -> ymax || s -> ydelta == 0xFFFFFFFF || s -> xdelta == 0xFFFFFFFF ) { av_log ( avctx , AV_LOG_ERROR , \"Wrong<S2SV_blank>or<S2SV_blank>missing<S2SV_blank>size<S2SV_blank>information.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( ( ret = ff_set_dimensions ( avctx , s -> w , s -> h ) ) < 0 ) return ret ; s -> desc = av_pix_fmt_desc_get ( avctx -> pix_fmt ) ; if ( ! s -> desc ) return AVERROR_INVALIDDATA ; if ( s -> desc -> flags & AV_PIX_FMT_FLAG_FLOAT ) { planes = s -> desc -> nb_components ; out_line_size = avctx -> width * 4 ; } else { planes = 1 ; out_line_size = avctx -> width * 2 * s -> desc -> nb_components ; } if ( s -> is_tile ) { nb_blocks = ( ( s -> xdelta + s -> tile_attr . xSize - 1 ) / s -> tile_attr . xSize ) * ( ( s -> ydelta + s -> tile_attr . ySize - 1 ) / s -> tile_attr . ySize ) ; } else { nb_blocks = ( s -> ydelta + s -> scan_lines_per_block - 1 ) / s -> scan_lines_per_block ; } if ( ( ret = ff_thread_get_buffer ( avctx , & frame , 0 ) ) < 0 ) return ret ; if ( bytestream2_get_bytes_left ( & s -> gb ) / 8 < nb_blocks ) return AVERROR_INVALIDDATA ; if ( ! s -> is_tile && bytestream2_peek_le64 ( & s -> gb ) == 0 ) { av_log ( s -> avctx , AV_LOG_DEBUG , \"recreating<S2SV_blank>invalid<S2SV_blank>scanline<S2SV_blank>offset<S2SV_blank>table\\\\n\" ) ; start_offset_table = bytestream2_tell ( & s -> gb ) ; start_next_scanline = start_offset_table + nb_blocks * 8 ; bytestream2_init_writer ( & offset_table_writer , & avpkt -> data [ start_offset_table ] , nb_blocks * 8 ) ; for ( y = 0 ; y < nb_blocks ; y ++ ) { bytestream2_put_le64 ( & offset_table_writer , start_next_scanline ) ; bytestream2_seek ( & s -> gb , start_next_scanline + 4 , SEEK_SET ) ; start_next_scanline += ( bytestream2_get_le32 ( & s -> gb ) + 8 ) ; } bytestream2_seek ( & s -> gb , start_offset_table , SEEK_SET ) ; } s -> buf = avpkt -> data ; s -> buf_size = avpkt -> size ; for ( i = 0 ; i < planes ; i ++ ) { ptr = picture -> data [ i ] ; for ( y = 0 ; y < FFMIN ( s -> ymin , s -> h ) ; y ++ ) { memset ( ptr , 0 , out_line_size ) ; ptr += picture -> linesize [ i ] ; } } s -> picture = picture ; avctx -> execute2 ( avctx , decode_block , s -> thread_data , NULL , nb_blocks ) ; ymax = FFMAX ( 0 , s -> ymax + 1 ) ; <S2SV_StartBug> for ( i = 0 ; i < planes ; i ++ ) { <S2SV_EndBug> ptr = picture -> data [ i ] + ( ymax * picture -> linesize [ i ] ) ; for ( y = ymax ; y < avctx -> height ; y ++ ) { memset ( ptr , 0 , out_line_size ) ; ptr += picture -> linesize [ i ] ; } } picture -> pict_type = AV_PICTURE_TYPE_I ; * got_frame = 1 ; return avpkt -> size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( ymax < avctx -> height )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6491\n\n```\nCWE-125 static MagickBooleanType Get8BIMProperty ( const Image * image , const char * key , ExceptionInfo * exception ) { char * attribute , format [ MagickPathExtent ] , name [ MagickPathExtent ] , * resource ; const StringInfo * profile ; const unsigned char * info ; long start , stop ; MagickBooleanType status ; register ssize_t i ; size_t length ; ssize_t count , id , sub_number ; profile = GetImageProfile ( image , \"8bim\" ) ; if ( profile == ( StringInfo * ) NULL ) return ( MagickFalse ) ; count = ( ssize_t ) sscanf ( key , \"8BIM:%ld,%ld:%1024[^\\\\n]\\\\n%1024[^\\\\n]\" , & start , & stop , name , format ) ; if ( ( count != 2 ) && ( count != 3 ) && ( count != 4 ) ) return ( MagickFalse ) ; if ( count < 4 ) ( void ) CopyMagickString ( format , \"SVG\" , MagickPathExtent ) ; if ( count < 3 ) * name = '\\\\0' ; sub_number = 1 ; if ( * name == '#' ) sub_number = ( ssize_t ) StringToLong ( & name [ 1 ] ) ; sub_number = MagickMax ( sub_number , 1L ) ; resource = ( char * ) NULL ; status = MagickFalse ; length = GetStringInfoLength ( profile ) ; info = GetStringInfoDatum ( profile ) ; while ( ( length > 0 ) && ( status == MagickFalse ) ) { if ( ReadPropertyByte ( & info , & length ) != ( unsigned char ) '8' ) continue ; if ( ReadPropertyByte ( & info , & length ) != ( unsigned char ) 'B' ) continue ; if ( ReadPropertyByte ( & info , & length ) != ( unsigned char ) 'I' ) continue ; if ( ReadPropertyByte ( & info , & length ) != ( unsigned char ) 'M' ) continue ; id = ( ssize_t ) ReadPropertyMSBShort ( & info , & length ) ; if ( id < ( ssize_t ) start ) continue ; if ( id > ( ssize_t ) stop ) continue ; if ( resource != ( char * ) NULL ) resource = DestroyString ( resource ) ; count = ( ssize_t ) ReadPropertyByte ( & info , & length ) ; if ( ( count != 0 ) && ( ( size_t ) count <= length ) ) { resource = ( char * ) NULL ; if ( ~ ( ( size_t ) count ) >= ( MagickPathExtent - 1 ) ) resource = ( char * ) AcquireQuantumMemory ( ( size_t ) count + MagickPathExtent , sizeof ( * resource ) ) ; if ( resource != ( char * ) NULL ) { for ( i = 0 ; i < ( ssize_t ) count ; i ++ ) resource [ i ] = ( char ) ReadPropertyByte ( & info , & length ) ; resource [ count ] = '\\\\0' ; } } if ( ( count & 0x01 ) == 0 ) ( void ) ReadPropertyByte ( & info , & length ) ; count = ( ssize_t ) ReadPropertyMSBLong ( & info , & length ) ; <S2SV_StartBug> if ( ( * name != '\\\\0' ) && ( * name != '#' ) ) <S2SV_EndBug> if ( ( resource == ( char * ) NULL ) || ( LocaleCompare ( name , resource ) != 0 ) ) { info += count ; length -= MagickMin ( count , ( ssize_t ) length ) ; continue ; } if ( ( * name == '#' ) && ( sub_number != 1 ) ) { sub_number -- ; info += count ; length -= MagickMin ( count , ( ssize_t ) length ) ; continue ; } attribute = ( char * ) NULL ; if ( ~ ( ( size_t ) count ) >= ( MagickPathExtent - 1 ) ) attribute = ( char * ) AcquireQuantumMemory ( ( size_t ) count + MagickPathExtent , sizeof ( * attribute ) ) ; if ( attribute != ( char * ) NULL ) { ( void ) CopyMagickMemory ( attribute , ( char * ) info , ( size_t ) count ) ; attribute [ count ] = '\\\\0' ; info += count ; length -= MagickMin ( count , ( ssize_t ) length ) ; if ( ( id <= 1999 ) || ( id >= 2999 ) ) ( void ) SetImageProperty ( ( Image * ) image , key , ( const char * ) attribute , exception ) ; else { char * path ; if ( LocaleCompare ( format , \"svg\" ) == 0 ) path = TraceSVGClippath ( ( unsigned char * ) attribute , ( size_t ) count , image -> columns , image -> rows ) ; else path = TracePSClippath ( ( unsigned char * ) attribute , ( size_t ) count ) ; ( void ) SetImageProperty ( ( Image * ) image , key , ( const char * ) path , exception ) ; path = DestroyString ( path ) ; } attribute = DestroyString ( attribute ) ; status = MagickTrue ; } } if ( resource != ( char * ) NULL ) resource = DestroyString ( resource ) ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( count < 0 ) || ( ( size_t ) count > length ) ) { length = 0 ; continue ; } if ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18079\n\n```\nCWE-476 static void i8042_stop ( struct serio * serio ) { struct i8042_port * port = serio -> port_data ; <S2SV_StartBug> port -> exists = false ; <S2SV_EndBug> synchronize_irq ( I8042_AUX_IRQ ) ; synchronize_irq ( I8042_KBD_IRQ ) ; <S2SV_StartBug> port -> serio = NULL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> port_data ; spin_lock_irq ( & i8042_lock ) ; <S2SV_ModStart> exists = false ; port -> serio = NULL ; spin_unlock_irq ( & i8042_lock ) <S2SV_ModStart> I8042_KBD_IRQ ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5706\n\n```\nCWE-000 static struct file * path_openat ( int dfd , struct filename * pathname , struct nameidata * nd , const struct open_flags * op , int flags ) { struct file * file ; struct path path ; int opened = 0 ; int error ; file = get_empty_filp ( ) ; if ( IS_ERR ( file ) ) return file ; file -> f_flags = op -> open_flag ; if ( unlikely ( file -> f_flags & __O_TMPFILE ) ) { error = do_tmpfile ( dfd , pathname , nd , flags , op , file , & opened ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } error = path_init ( dfd , pathname , flags , nd ) ; if ( unlikely ( error ) ) goto out ; error = do_last ( nd , & path , file , op , & opened , pathname ) ; while ( unlikely ( error > 0 ) ) { struct path link = path ; void * cookie ; if ( ! ( nd -> flags & LOOKUP_FOLLOW ) ) { path_put_conditional ( & path , nd ) ; path_put ( & nd -> path ) ; error = - ELOOP ; break ; } error = may_follow_link ( & link , nd ) ; if ( unlikely ( error ) ) break ; nd -> flags |= LOOKUP_PARENT ; nd -> flags &= ~ ( LOOKUP_OPEN | LOOKUP_CREATE | LOOKUP_EXCL ) ; error = follow_link ( & link , nd , & cookie ) ; if ( unlikely ( error ) ) break ; error = do_last ( nd , & path , file , op , & opened , pathname ) ; put_link ( nd , & link , cookie ) ; } out : path_cleanup ( nd ) ; <S2SV_StartBug> if ( ! ( opened & FILE_OPENED ) ) { <S2SV_EndBug> BUG_ON ( ! error ) ; put_filp ( file ) ; } if ( unlikely ( error ) ) { if ( error == - EOPENSTALE ) { if ( flags & LOOKUP_RCU ) error = - ECHILD ; else error = - ESTALE ; } file = ERR_PTR ( error ) ; } return file ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; goto out2 <S2SV_ModEnd> ; } error <S2SV_ModStart> nd ) ; out2 :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static void emulate_load_store_insn ( struct pt_regs * regs , void __user * addr , unsigned int __user * pc ) { union mips_instruction insn ; unsigned long value ; unsigned int res ; perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> __get_user ( insn . word , pc ) ; switch ( insn . i_format . opcode ) { case ll_op : case lld_op : case sc_op : case scd_op : case ldl_op : case ldr_op : case lwl_op : case lwr_op : case sdl_op : case sdr_op : case swl_op : case swr_op : case lb_op : case lbu_op : case sb_op : goto sigbus ; case lh_op : if ( ! access_ok ( VERIFY_READ , addr , 2 ) ) goto sigbus ; __asm__ __volatile__ ( \".set\\\\tnoat\\\\n\" # ifdef __BIG_ENDIAN \"1:\\\\tlb\\\\t%0,<S2SV_blank>0(%2)\\\\n\" \"2:\\\\tlbu\\\\t$1,<S2SV_blank>1(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tlb\\\\t%0,<S2SV_blank>1(%2)\\\\n\" \"2:\\\\tlbu\\\\t$1,<S2SV_blank>0(%2)\\\\n\\\\t\" # endif \"sll\\\\t%0,<S2SV_blank>0x8\\\\n\\\\t\" \"or\\\\t%0,<S2SV_blank>$1\\\\n\\\\t\" \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.set\\\\tat\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; case lw_op : if ( ! access_ok ( VERIFY_READ , addr , 4 ) ) goto sigbus ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tlwl\\\\t%0,<S2SV_blank>(%2)\\\\n\" \"2:\\\\tlwr\\\\t%0,<S2SV_blank>3(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tlwl\\\\t%0,<S2SV_blank>3(%2)\\\\n\" \"2:\\\\tlwr\\\\t%0,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; case lhu_op : if ( ! access_ok ( VERIFY_READ , addr , 2 ) ) goto sigbus ; __asm__ __volatile__ ( \".set\\\\tnoat\\\\n\" # ifdef __BIG_ENDIAN \"1:\\\\tlbu\\\\t%0,<S2SV_blank>0(%2)\\\\n\" \"2:\\\\tlbu\\\\t$1,<S2SV_blank>1(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tlbu\\\\t%0,<S2SV_blank>1(%2)\\\\n\" \"2:\\\\tlbu\\\\t$1,<S2SV_blank>0(%2)\\\\n\\\\t\" # endif \"sll\\\\t%0,<S2SV_blank>0x8\\\\n\\\\t\" \"or\\\\t%0,<S2SV_blank>$1\\\\n\\\\t\" \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.set\\\\tat\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; case lwu_op : # ifdef CONFIG_64BIT if ( ! access_ok ( VERIFY_READ , addr , 4 ) ) goto sigbus ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tlwl\\\\t%0,<S2SV_blank>(%2)\\\\n\" \"2:\\\\tlwr\\\\t%0,<S2SV_blank>3(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tlwl\\\\t%0,<S2SV_blank>3(%2)\\\\n\" \"2:\\\\tlwr\\\\t%0,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"dsll\\\\t%0,<S2SV_blank>%0,<S2SV_blank>32\\\\n\\\\t\" \"dsrl\\\\t%0,<S2SV_blank>%0,<S2SV_blank>32\\\\n\\\\t\" \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; # endif goto sigill ; case ld_op : # ifdef CONFIG_64BIT if ( ! access_ok ( VERIFY_READ , addr , 8 ) ) goto sigbus ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tldl\\\\t%0,<S2SV_blank>(%2)\\\\n\" \"2:\\\\tldr\\\\t%0,<S2SV_blank>7(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tldl\\\\t%0,<S2SV_blank>7(%2)\\\\n\" \"2:\\\\tldr\\\\t%0,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; # endif goto sigill ; case sh_op : if ( ! access_ok ( VERIFY_WRITE , addr , 2 ) ) goto sigbus ; value = regs -> regs [ insn . i_format . rt ] ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \".set\\\\tnoat\\\\n\" \"1:\\\\tsb\\\\t%1,<S2SV_blank>1(%2)\\\\n\\\\t\" \"srl\\\\t$1,<S2SV_blank>%1,<S2SV_blank>0x8\\\\n\" \"2:\\\\tsb\\\\t$1,<S2SV_blank>0(%2)\\\\n\\\\t\" \".set\\\\tat\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \".set\\\\tnoat\\\\n\" \"1:\\\\tsb\\\\t%1,<S2SV_blank>0(%2)\\\\n\\\\t\" \"srl\\\\t$1,%1,<S2SV_blank>0x8\\\\n\" \"2:\\\\tsb\\\\t$1,<S2SV_blank>1(%2)\\\\n\\\\t\" \".set\\\\tat\\\\n\\\\t\" # endif \"li\\\\t%0,<S2SV_blank>0\\\\n\" \"3:\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%0,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=r\" ( res ) : \"r\" ( value ) , \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; break ; case sw_op : if ( ! access_ok ( VERIFY_WRITE , addr , 4 ) ) goto sigbus ; value = regs -> regs [ insn . i_format . rt ] ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tswl\\\\t%1,(%2)\\\\n\" \"2:\\\\tswr\\\\t%1,<S2SV_blank>3(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tswl\\\\t%1,<S2SV_blank>3(%2)\\\\n\" \"2:\\\\tswr\\\\t%1,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"li\\\\t%0,<S2SV_blank>0\\\\n\" \"3:\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%0,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=r\" ( res ) : \"r\" ( value ) , \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; break ; case sd_op : # ifdef CONFIG_64BIT if ( ! access_ok ( VERIFY_WRITE , addr , 8 ) ) goto sigbus ; value = regs -> regs [ insn . i_format . rt ] ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tsdl\\\\t%1,(%2)\\\\n\" \"2:\\\\tsdr\\\\t%1,<S2SV_blank>7(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tsdl\\\\t%1,<S2SV_blank>7(%2)\\\\n\" \"2:\\\\tsdr\\\\t%1,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"li\\\\t%0,<S2SV_blank>0\\\\n\" \"3:\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%0,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=r\" ( res ) : \"r\" ( value ) , \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; break ; # endif goto sigill ; case lwc1_op : case ldc1_op : case swc1_op : case sdc1_op : goto sigbus ; case lwc2_op : cu2_notifier_call_chain ( CU2_LWC2_OP , regs ) ; break ; case ldc2_op : cu2_notifier_call_chain ( CU2_LDC2_OP , regs ) ; break ; case swc2_op : cu2_notifier_call_chain ( CU2_SWC2_OP , regs ) ; break ; case sdc2_op : cu2_notifier_call_chain ( CU2_SDC2_OP , regs ) ; break ; default : goto sigill ; } # ifdef CONFIG_DEBUG_FS unaligned_instructions ++ ; # endif return ; fault : if ( fixup_exception ( regs ) ) return ; die_if_kernel ( \"Unhandled<S2SV_blank>kernel<S2SV_blank>unaligned<S2SV_blank>access\" , regs ) ; force_sig ( SIGSEGV , current ) ; return ; sigbus : die_if_kernel ( \"Unhandled<S2SV_blank>kernel<S2SV_blank>unaligned<S2SV_blank>access\" , regs ) ; force_sig ( SIGBUS , current ) ; return ; sigill : die_if_kernel ( \"Unhandled<S2SV_blank>kernel<S2SV_blank>unaligned<S2SV_blank>access<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>instruction\" , regs ) ; force_sig ( SIGILL , current ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19842\n\n```\nCWE-125 static x86newTokenType getToken ( const char * str , size_t * begin , size_t * end ) { <S2SV_StartBug> while ( begin && isspace ( ( ut8 ) str [ * begin ] ) ) { <S2SV_EndBug> ++ ( * begin ) ; } if ( ! str [ * begin ] ) { * end = * begin ; return TT_EOF ; <S2SV_StartBug> } else if ( isalpha ( ( ut8 ) str [ * begin ] ) ) { <S2SV_EndBug> * end = * begin ; <S2SV_StartBug> while ( end && isalnum ( ( ut8 ) str [ * end ] ) ) { <S2SV_EndBug> ++ ( * end ) ; } return TT_WORD ; <S2SV_StartBug> } else if ( isdigit ( ( ut8 ) str [ * begin ] ) ) { <S2SV_EndBug> * end = * begin ; while ( end && isalnum ( ( ut8 ) str [ * end ] ) ) { ++ ( * end ) ; } return TT_NUMBER ; } else { * end = * begin + 1 ; return TT_SPECIAL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> end ) { if ( * begin > strlen ( str ) ) { return TT_EOF ; } <S2SV_ModStart> ( begin && str [ * begin ] && <S2SV_ModStart> TT_EOF ; } <S2SV_ModEnd> if ( isalpha <S2SV_ModStart> ( end && str [ * end ] && <S2SV_ModStart> TT_WORD ; } <S2SV_ModEnd> if ( isdigit\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4002\n\n```\nCWE-119 void oz_usb_rx ( struct oz_pd * pd , struct oz_elt * elt ) { struct oz_usb_hdr * usb_hdr = ( struct oz_usb_hdr * ) ( elt + 1 ) ; struct oz_usb_ctx * usb_ctx ; spin_lock_bh ( & pd -> app_lock [ OZ_APPID_USB ] ) ; usb_ctx = ( struct oz_usb_ctx * ) pd -> app_ctx [ OZ_APPID_USB ] ; if ( usb_ctx ) oz_usb_get ( usb_ctx ) ; spin_unlock_bh ( & pd -> app_lock [ OZ_APPID_USB ] ) ; if ( usb_ctx == NULL ) return ; if ( usb_ctx -> stopped ) goto done ; if ( usb_hdr -> elt_seq_num != 0 ) { if ( ( ( usb_ctx -> rx_seq_num - usb_hdr -> elt_seq_num ) & 0x80 ) == 0 ) goto done ; } usb_ctx -> rx_seq_num = usb_hdr -> elt_seq_num ; switch ( usb_hdr -> type ) { case OZ_GET_DESC_RSP : { struct oz_get_desc_rsp * body = ( struct oz_get_desc_rsp * ) usb_hdr ; <S2SV_StartBug> int data_len = elt -> length - <S2SV_EndBug> <S2SV_StartBug> sizeof ( struct oz_get_desc_rsp ) + 1 ; <S2SV_EndBug> u16 offs = le16_to_cpu ( get_unaligned ( & body -> offset ) ) ; u16 total_size = le16_to_cpu ( get_unaligned ( & body -> total_size ) ) ; oz_dbg ( ON , \"USB_REQ_GET_DESCRIPTOR<S2SV_blank>-<S2SV_blank>cnf\\\\n\" ) ; oz_hcd_get_desc_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , body -> data , data_len , offs , total_size ) ; } break ; case OZ_SET_CONFIG_RSP : { struct oz_set_config_rsp * body = ( struct oz_set_config_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , NULL , 0 ) ; } break ; case OZ_SET_INTERFACE_RSP : { struct oz_set_interface_rsp * body = ( struct oz_set_interface_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , NULL , 0 ) ; } break ; case OZ_VENDOR_CLASS_RSP : { struct oz_vendor_class_rsp * body = ( struct oz_vendor_class_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , body -> data , elt -> length - sizeof ( struct oz_vendor_class_rsp ) + 1 ) ; } break ; case OZ_USB_ENDPOINT_DATA : oz_usb_handle_ep_data ( usb_ctx , usb_hdr , elt -> length ) ; break ; } done : oz_usb_put ( usb_ctx ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) usb_hdr ; u16 offs , total_size ; u8 data_len ; if ( elt -> length < sizeof ( struct oz_get_desc_rsp ) - 1 ) break ; <S2SV_ModEnd> data_len = elt <S2SV_ModStart> -> length - ( <S2SV_ModStart> ( struct oz_get_desc_rsp ) - 1 ) ; offs = le16_to_cpu ( get_unaligned ( & body -> offset ) ) ; total_size = le16_to_cpu ( get_unaligned ( & body -> total_size ) ) ; oz_dbg ( ON , \"USB_REQ_GET_DESCRIPTOR<S2SV_blank>-<S2SV_blank>cnf\\\\n\" ) ; oz_hcd_get_desc_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , body -> data , data_len , offs , total_size ) ; } break ; case OZ_SET_CONFIG_RSP : { struct oz_set_config_rsp * body = ( struct oz_set_config_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , NULL , 0 ) ; } break ; case OZ_SET_INTERFACE_RSP : { struct oz_set_interface_rsp * body = ( struct oz_set_interface_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , NULL , 0 ) ; } break ; case OZ_VENDOR_CLASS_RSP : { struct oz_vendor_class_rsp * body = ( struct oz_vendor_class_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , body -> data , elt -> length - sizeof ( struct oz_vendor_class_rsp <S2SV_ModStart> ) + 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3919\n\n```\nCWE-119 xmlChar * xmlStringLenDecodeEntities ( xmlParserCtxtPtr ctxt , const xmlChar * str , int len , int what , xmlChar end , xmlChar end2 , xmlChar end3 ) { xmlChar * buffer = NULL ; int buffer_size = 0 ; xmlChar * current = NULL ; xmlChar * rep = NULL ; const xmlChar * last ; xmlEntityPtr ent ; int c , l ; int nbchars = 0 ; if ( ( ctxt == NULL ) || ( str == NULL ) || ( len < 0 ) ) return ( NULL ) ; last = str + len ; if ( ( ( ctxt -> depth > 40 ) && ( ( ctxt -> options & XML_PARSE_HUGE ) == 0 ) ) || ( ctxt -> depth > 1024 ) ) { xmlFatalErr ( ctxt , XML_ERR_ENTITY_LOOP , NULL ) ; return ( NULL ) ; } buffer_size = XML_PARSER_BIG_BUFFER_SIZE ; buffer = ( xmlChar * ) xmlMallocAtomic ( buffer_size * sizeof ( xmlChar ) ) ; if ( buffer == NULL ) goto mem_error ; if ( str < last ) c = CUR_SCHAR ( str , l ) ; else c = 0 ; while ( ( c != 0 ) && ( c != end ) && ( c != end2 ) && ( c != end3 ) ) { if ( c == 0 ) break ; if ( ( c == '&' ) && ( str [ 1 ] == '#' ) ) { int val = xmlParseStringCharRef ( ctxt , & str ) ; if ( val != 0 ) { COPY_BUF ( 0 , buffer , nbchars , val ) ; } if ( nbchars > buffer_size - XML_PARSER_BUFFER_SIZE ) { growBuffer ( buffer , XML_PARSER_BUFFER_SIZE ) ; } } else if ( ( c == '&' ) && ( what & XML_SUBSTITUTE_REF ) ) { if ( xmlParserDebugEntities ) xmlGenericError ( xmlGenericErrorContext , \"String<S2SV_blank>decoding<S2SV_blank>Entity<S2SV_blank>Reference:<S2SV_blank>%.30s\\\\n\" , str ) ; ent = xmlParseStringEntityRef ( ctxt , & str ) ; if ( ( ctxt -> lastError . code == XML_ERR_ENTITY_LOOP ) || ( ctxt -> lastError . code == XML_ERR_INTERNAL_ERROR ) ) goto int_error ; if ( ent != NULL ) ctxt -> nbentities += ent -> checked ; if ( ( ent != NULL ) && ( ent -> etype == XML_INTERNAL_PREDEFINED_ENTITY ) ) { if ( ent -> content != NULL ) { COPY_BUF ( 0 , buffer , nbchars , ent -> content [ 0 ] ) ; if ( nbchars > buffer_size - XML_PARSER_BUFFER_SIZE ) { growBuffer ( buffer , XML_PARSER_BUFFER_SIZE ) ; } } else { xmlFatalErrMsg ( ctxt , XML_ERR_INTERNAL_ERROR , \"predefined<S2SV_blank>entity<S2SV_blank>has<S2SV_blank>no<S2SV_blank>content\\\\n\" ) ; } } else if ( ( ent != NULL ) && ( ent -> content != NULL ) ) { ctxt -> depth ++ ; rep = xmlStringDecodeEntities ( ctxt , ent -> content , what , 0 , 0 , 0 ) ; ctxt -> depth -- ; if ( rep != NULL ) { current = rep ; while ( * current != 0 ) { buffer [ nbchars ++ ] = * current ++ ; if ( nbchars > buffer_size - XML_PARSER_BUFFER_SIZE ) { if ( xmlParserEntityCheck ( ctxt , nbchars , ent ) ) goto int_error ; growBuffer ( buffer , XML_PARSER_BUFFER_SIZE ) ; } } xmlFree ( rep ) ; rep = NULL ; } } else if ( ent != NULL ) { int i = xmlStrlen ( ent -> name ) ; const xmlChar * cur = ent -> name ; buffer [ nbchars ++ ] = '&' ; if ( nbchars > buffer_size - i - XML_PARSER_BUFFER_SIZE ) { <S2SV_StartBug> growBuffer ( buffer , XML_PARSER_BUFFER_SIZE ) ; <S2SV_EndBug> } for ( ; i > 0 ; i -- ) buffer [ nbchars ++ ] = * cur ++ ; buffer [ nbchars ++ ] = ';' ; } } else if ( c == '%' && ( what & XML_SUBSTITUTE_PEREF ) ) { if ( xmlParserDebugEntities ) xmlGenericError ( xmlGenericErrorContext , \"String<S2SV_blank>decoding<S2SV_blank>PE<S2SV_blank>Reference:<S2SV_blank>%.30s\\\\n\" , str ) ; ent = xmlParseStringPEReference ( ctxt , & str ) ; if ( ctxt -> lastError . code == XML_ERR_ENTITY_LOOP ) goto int_error ; if ( ent != NULL ) ctxt -> nbentities += ent -> checked ; if ( ent != NULL ) { if ( ent -> content == NULL ) { xmlLoadEntityContent ( ctxt , ent ) ; } ctxt -> depth ++ ; rep = xmlStringDecodeEntities ( ctxt , ent -> content , what , 0 , 0 , 0 ) ; ctxt -> depth -- ; if ( rep != NULL ) { current = rep ; while ( * current != 0 ) { buffer [ nbchars ++ ] = * current ++ ; if ( nbchars > buffer_size - XML_PARSER_BUFFER_SIZE ) { if ( xmlParserEntityCheck ( ctxt , nbchars , ent ) ) goto int_error ; growBuffer ( buffer , XML_PARSER_BUFFER_SIZE ) ; } } xmlFree ( rep ) ; rep = NULL ; } } } else { COPY_BUF ( l , buffer , nbchars , c ) ; str += l ; if ( nbchars > buffer_size - XML_PARSER_BUFFER_SIZE ) { growBuffer ( buffer , XML_PARSER_BUFFER_SIZE ) ; } } if ( str < last ) c = CUR_SCHAR ( str , l ) ; else c = 0 ; } buffer [ nbchars ] = 0 ; return ( buffer ) ; mem_error : xmlErrMemory ( ctxt , NULL ) ; int_error : if ( rep != NULL ) xmlFree ( rep ) ; if ( buffer != NULL ) xmlFree ( buffer ) ; return ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( buffer , i +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15594\n\n```\nCWE-200 unsigned paravirt_patch_jmp ( void * insnbuf , const void * target , unsigned long addr , unsigned len ) { struct branch * b = insnbuf ; unsigned long delta = ( unsigned long ) target - ( addr + 5 ) ; <S2SV_StartBug> if ( len < 5 ) <S2SV_EndBug> <S2SV_StartBug> return len ; <S2SV_EndBug> b -> opcode = 0xe9 ; b -> delta = delta ; return 5 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 5 ) { # ifdef CONFIG_RETPOLINE WARN_ONCE ( \"Failing<S2SV_blank>to<S2SV_blank>patch<S2SV_blank>indirect<S2SV_blank>JMP<S2SV_blank>in<S2SV_blank>%ps\\\\n\" , ( void * ) addr ) ; # endif <S2SV_ModStart> return len ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14495\n\n```\nCWE-787 void * adminchild ( struct clientparam * param ) { int i , res ; char * buf ; char username [ 256 ] ; char * sb ; char * req = NULL ; struct printparam pp ; <S2SV_StartBug> int contentlen = 0 ; <S2SV_EndBug> int isform = 0 ; pp . inbuf = 0 ; pp . cp = param ; buf = myalloc ( LINESIZE ) ; if ( ! buf ) { RETURN ( 555 ) ; } i = sockgetlinebuf ( param , CLIENT , ( unsigned char * ) buf , LINESIZE - 1 , '\\\\n' , conf . timeouts [ STRING_S ] ) ; if ( i < 5 || ( ( buf [ 0 ] != 'G' || buf [ 1 ] != 'E' || buf [ 2 ] != 'T' || buf [ 3 ] != '<S2SV_blank>' || buf [ 4 ] != '/' ) && ( buf [ 0 ] != 'P' || buf [ 1 ] != 'O' || buf [ 2 ] != 'S' || buf [ 3 ] != 'T' || buf [ 4 ] != '<S2SV_blank>' || buf [ 5 ] != '/' ) ) ) { RETURN ( 701 ) ; } buf [ i ] = 0 ; sb = strchr ( buf + 5 , '<S2SV_blank>' ) ; if ( ! sb ) { RETURN ( 702 ) ; } * sb = 0 ; req = mystrdup ( buf + ( ( * buf == 'P' ) ? 6 : 5 ) ) ; while ( ( i = sockgetlinebuf ( param , CLIENT , ( unsigned char * ) buf , LINESIZE - 1 , '\\\\n' , conf . timeouts [ STRING_S ] ) ) > 2 ) { buf [ i ] = 0 ; if ( i > 19 && ( ! strncasecmp ( buf , \"authorization\" , 13 ) ) ) { sb = strchr ( buf , ':' ) ; if ( ! sb ) continue ; ++ sb ; while ( isspace ( * sb ) ) sb ++ ; if ( ! * sb || strncasecmp ( sb , \"basic\" , 5 ) ) { continue ; } sb += 5 ; while ( isspace ( * sb ) ) sb ++ ; i = de64 ( ( unsigned char * ) sb , ( unsigned char * ) username , 255 ) ; if ( i <= 0 ) continue ; username [ i ] = 0 ; sb = strchr ( ( char * ) username , ':' ) ; if ( sb ) { * sb = 0 ; if ( param -> password ) myfree ( param -> password ) ; param -> password = ( unsigned char * ) mystrdup ( sb + 1 ) ; } if ( param -> username ) myfree ( param -> username ) ; param -> username = ( unsigned char * ) mystrdup ( username ) ; continue ; } else if ( i > 15 && ( ! strncasecmp ( buf , \"content-length:\" , 15 ) ) ) { sb = buf + 15 ; while ( isspace ( * sb ) ) sb ++ ; <S2SV_StartBug> contentlen = atoi ( sb ) ; <S2SV_EndBug> } else if ( i > 13 && ( ! strncasecmp ( buf , \"content-type:\" , 13 ) ) ) { sb = buf + 13 ; while ( isspace ( * sb ) ) sb ++ ; if ( ! strncasecmp ( sb , \"x-www-form-urlencoded\" , 21 ) ) isform = 1 ; } } param -> operation = ADMIN ; if ( isform && contentlen ) { printstr ( & pp , \"HTTP/1.0<S2SV_blank>100<S2SV_blank>Continue\\\\r\\\\n\\\\r\\\\n\" ) ; stdpr ( & pp , NULL , 0 ) ; } res = ( * param -> srv -> authfunc ) ( param ) ; if ( res && res != 10 ) { printstr ( & pp , authreq ) ; RETURN ( res ) ; } if ( param -> srv -> singlepacket || param -> redirected ) { if ( * req == 'C' ) req [ 1 ] = 0 ; else * req = 0 ; } sprintf ( buf , ok , conf . stringtable ? ( char * ) conf . stringtable [ 2 ] : \"3proxy\" , conf . stringtable ? ( char * ) conf . stringtable [ 2 ] : \"3[APA3A]<S2SV_blank>tiny<S2SV_blank>proxy\" , conf . stringtable ? ( char * ) conf . stringtable [ 3 ] : \"\" ) ; if ( * req != 'S' ) printstr ( & pp , buf ) ; switch ( * req ) { case 'C' : printstr ( & pp , counters ) ; { struct trafcount * cp ; int num = 0 ; for ( cp = conf . trafcounter ; cp ; cp = cp -> next , num ++ ) { int inbuf = 0 ; if ( cp -> ace && ( param -> srv -> singlepacket || param -> redirected ) ) { if ( ! ACLmatches ( cp -> ace , param ) ) continue ; } if ( req [ 1 ] == 'S' && atoi ( req + 2 ) == num ) cp -> disabled = 0 ; if ( req [ 1 ] == 'D' && atoi ( req + 2 ) == num ) cp -> disabled = 1 ; inbuf += sprintf ( buf , \"<tr>\" \"<td>%s</td><td><A<S2SV_blank>HREF=\\\\\\'/C%c%d\\\\\\'>%s</A></td><td>\" , ( cp -> comment ) ? cp -> comment : \"&nbsp;\" , ( cp -> disabled ) ? 'S' : 'D' , num , ( cp -> disabled ) ? \"NO\" : \"YES\" ) ; if ( ! cp -> ace || ! cp -> ace -> users ) { inbuf += sprintf ( buf + inbuf , \"<center>ANY</center>\" ) ; } else { inbuf += printuserlist ( buf + inbuf , LINESIZE - 800 , cp -> ace -> users , \",<br<S2SV_blank>/>\\\\r\\\\n\" ) ; } inbuf += sprintf ( buf + inbuf , \"</td><td>\" ) ; if ( ! cp -> ace || ! cp -> ace -> src ) { inbuf += sprintf ( buf + inbuf , \"<center>ANY</center>\" ) ; } else { inbuf += printiplist ( buf + inbuf , LINESIZE - 512 , cp -> ace -> src , \",<br<S2SV_blank>/>\\\\r\\\\n\" ) ; } inbuf += sprintf ( buf + inbuf , \"</td><td>\" ) ; if ( ! cp -> ace || ! cp -> ace -> dst ) { inbuf += sprintf ( buf + inbuf , \"<center>ANY</center>\" ) ; } else { inbuf += printiplist ( buf + inbuf , LINESIZE - 512 , cp -> ace -> dst , \",<br<S2SV_blank>/>\\\\r\\\\n\" ) ; } inbuf += sprintf ( buf + inbuf , \"</td><td>\" ) ; if ( ! cp -> ace || ! cp -> ace -> ports ) { inbuf += sprintf ( buf + inbuf , \"<center>ANY</center>\" ) ; } else { inbuf += printportlist ( buf + inbuf , LINESIZE - 128 , cp -> ace -> ports , \",<br<S2SV_blank>/>\\\\r\\\\n\" ) ; } if ( cp -> type == NONE ) { inbuf += sprintf ( buf + inbuf , \"</td><td<S2SV_blank>colspan=\\\\\\'6\\\\\\'<S2SV_blank>align=\\\\\\'center\\\\\\'>exclude<S2SV_blank>from<S2SV_blank>limitation</td></tr>\\\\r\\\\n\" ) ; } else { inbuf += sprintf ( buf + inbuf , \"</td><td>%\" PRINTF_INT64_MODIFIER \"u</td>\" \"<td>MB%s</td>\" \"<td>%\" PRINTF_INT64_MODIFIER \"u</td>\" \"<td>%s</td>\" , cp -> traflim64 / ( 1024 * 1024 ) , rotations [ cp -> type ] , cp -> traf64 , cp -> cleared ? ctime ( & cp -> cleared ) : \"never\" ) ; inbuf += sprintf ( buf + inbuf , \"<td>%s</td>\" \"<td>%i</td>\" \"</tr>\\\\r\\\\n\" , cp -> updated ? ctime ( & cp -> updated ) : \"never\" , cp -> number ) ; } printstr ( & pp , buf ) ; } } printstr ( & pp , counterstail ) ; break ; case 'R' : conf . needreload = 1 ; printstr ( & pp , \"<h3>Reload<S2SV_blank>scheduled</h3>\" ) ; break ; case 'S' : { if ( req [ 1 ] == 'X' ) { printstr ( & pp , style ) ; break ; } printstr ( & pp , xml ) ; printval ( conf . services , TYPE_SERVER , 0 , & pp ) ; printstr ( & pp , postxml ) ; } break ; case 'F' : { FILE * fp ; char buf [ 256 ] ; fp = confopen ( ) ; if ( ! fp ) { printstr ( & pp , \"<h3><font<S2SV_blank>color=\\\\\"red\\\\\">Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>config<S2SV_blank>file</font></h3>\" ) ; break ; } printstr ( & pp , \"<h3>Please<S2SV_blank>be<S2SV_blank>careful<S2SV_blank>editing<S2SV_blank>config<S2SV_blank>file<S2SV_blank>remotely</h3>\" ) ; <S2SV_StartBug> printstr ( & pp , \"<form<S2SV_blank>method=\\\\\"POST\\\\\"<S2SV_blank>action=\\\\\"/U\\\\\"><textarea<S2SV_blank>cols=\\\\\"80\\\\\"<S2SV_blank>rows=\\\\\"30\\\\\"<S2SV_blank>name=\\\\\"conffile\\\\\">\" ) ; <S2SV_EndBug> while ( fgets ( buf , 256 , fp ) ) { printstr ( & pp , buf ) ; } if ( ! writable ) fclose ( fp ) ; printstr ( & pp , \"</textarea><br><input<S2SV_blank>type=\\\\\"Submit\\\\\"></form>\" ) ; break ; } case 'U' : { <S2SV_StartBug> int l = 0 ; <S2SV_EndBug> int error = 0 ; <S2SV_StartBug> if ( ! writable || fseek ( writable , 0 , 0 ) ) { <S2SV_EndBug> error = 1 ; } <S2SV_StartBug> while ( ( i = sockgetlinebuf ( param , CLIENT , ( unsigned char * ) buf , LINESIZE - 1 , '+' , conf . timeouts [ STRING_S ] ) ) > 0 ) { <S2SV_EndBug> if ( i > ( contentlen - l ) ) i = ( contentlen - l ) ; <S2SV_StartBug> buf [ i ] = 0 ; <S2SV_EndBug> if ( ! l ) { if ( strncasecmp ( buf , \"conffile=\" , 9 ) ) error = 1 ; } <S2SV_StartBug> if ( ! error ) { <S2SV_EndBug> decodeurl ( ( unsigned char * ) buf , 1 ) ; fprintf ( writable , \"%s\" , l ? buf : buf + 9 ) ; } <S2SV_StartBug> l += i ; <S2SV_EndBug> if ( l >= contentlen ) break ; } if ( writable && ! error ) { fflush ( writable ) ; # ifndef _WINCE ftruncate ( fileno ( writable ) , ftell ( writable ) ) ; # endif } printstr ( & pp , error ? \"<h3><font<S2SV_blank>color=\\\\\"red\\\\\">Config<S2SV_blank>file<S2SV_blank>is<S2SV_blank>not<S2SV_blank>writable</font></h3>Make<S2SV_blank>sure<S2SV_blank>you<S2SV_blank>have<S2SV_blank>\\\\\"writable\\\\\"<S2SV_blank>command<S2SV_blank>in<S2SV_blank>configuration<S2SV_blank>file\" : \"<h3>Configuration<S2SV_blank>updated</h3>\" ) ; } break ; default : printstr ( & pp , ( char * ) conf . stringtable [ WEBBANNERS ] ) ; break ; } if ( * req != 'S' ) printstr ( & pp , tail ) ; CLEANRET : printstr ( & pp , NULL ) ; if ( buf ) myfree ( buf ) ; ( * param -> srv -> logfunc ) ( param , ( unsigned char * ) req ) ; if ( req ) myfree ( req ) ; freeparam ( param ) ; return ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> printparam pp ; unsigned <S2SV_ModEnd> contentlen = 0 <S2SV_ModStart> sb ++ ; sscanf ( sb , \"%u\" , & contentlen ) ; if ( contentlen > LINESIZE * 1024 ) contentlen = 0 <S2SV_ModEnd> ; } else <S2SV_ModStart> & pp , \"<form<S2SV_blank>method=\\\\\"POST\\\\\"<S2SV_blank>action=\\\\\"/U\\\\\"<S2SV_blank>enctype=\\\\\"application/x-www-form-urlencoded\\\\\"><textarea<S2SV_blank>cols=\\\\\"80\\\\\"<S2SV_blank>rows=\\\\\"30\\\\\"<S2SV_blank>name=\\\\\"conffile\\\\\">\" <S2SV_ModEnd> ) ; while <S2SV_ModStart> 'U' : { unsigned <S2SV_ModEnd> l = 0 <S2SV_ModStart> ! writable || ! contentlen || <S2SV_ModStart> } while ( l < contentlen && <S2SV_ModStart> ) buf , ( contentlen - l ) > <S2SV_ModStart> LINESIZE - 1 ? LINESIZE - 1 : contentlen - l <S2SV_ModStart> l ) ; if ( ! l ) { if ( i < 9 || <S2SV_ModEnd> strncasecmp ( buf <S2SV_ModStart> error ) { buf [ i ] = 0 ; <S2SV_ModStart> l += i <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20855\n\n```\nCWE-119 static int create_qp_common ( struct mlx5_ib_dev * dev , struct ib_pd * pd , struct ib_qp_init_attr * init_attr , struct ib_udata * udata , struct mlx5_ib_qp * qp ) { struct mlx5_ib_resources * devr = & dev -> devr ; int inlen = MLX5_ST_SZ_BYTES ( create_qp_in ) ; struct mlx5_core_dev * mdev = dev -> mdev ; <S2SV_StartBug> struct mlx5_ib_create_qp_resp resp ; <S2SV_EndBug> struct mlx5_ib_cq * send_cq ; struct mlx5_ib_cq * recv_cq ; unsigned long flags ; u32 uidx = MLX5_IB_DEFAULT_UIDX ; struct mlx5_ib_create_qp ucmd ; struct mlx5_ib_qp_base * base ; int mlx5_st ; void * qpc ; u32 * in ; int err ; mutex_init ( & qp -> mutex ) ; spin_lock_init ( & qp -> sq . lock ) ; spin_lock_init ( & qp -> rq . lock ) ; mlx5_st = to_mlx5_st ( init_attr -> qp_type ) ; if ( mlx5_st < 0 ) return - EINVAL ; if ( init_attr -> rwq_ind_tbl ) { if ( ! udata ) return - ENOSYS ; err = create_rss_raw_qp_tir ( dev , qp , pd , init_attr , udata ) ; return err ; } if ( init_attr -> create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK ) { if ( ! MLX5_CAP_GEN ( mdev , block_lb_mc ) ) { mlx5_ib_dbg ( dev , \"block<S2SV_blank>multicast<S2SV_blank>loopback<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EINVAL ; } else { qp -> flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK ; } } if ( init_attr -> create_flags & ( IB_QP_CREATE_CROSS_CHANNEL | IB_QP_CREATE_MANAGED_SEND | IB_QP_CREATE_MANAGED_RECV ) ) { if ( ! MLX5_CAP_GEN ( mdev , cd ) ) { mlx5_ib_dbg ( dev , \"cross-channel<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EINVAL ; } if ( init_attr -> create_flags & IB_QP_CREATE_CROSS_CHANNEL ) qp -> flags |= MLX5_IB_QP_CROSS_CHANNEL ; if ( init_attr -> create_flags & IB_QP_CREATE_MANAGED_SEND ) qp -> flags |= MLX5_IB_QP_MANAGED_SEND ; if ( init_attr -> create_flags & IB_QP_CREATE_MANAGED_RECV ) qp -> flags |= MLX5_IB_QP_MANAGED_RECV ; } if ( init_attr -> qp_type == IB_QPT_UD && ( init_attr -> create_flags & IB_QP_CREATE_IPOIB_UD_LSO ) ) if ( ! MLX5_CAP_GEN ( mdev , ipoib_basic_offloads ) ) { mlx5_ib_dbg ( dev , \"ipoib<S2SV_blank>UD<S2SV_blank>lso<S2SV_blank>qp<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EOPNOTSUPP ; } if ( init_attr -> create_flags & IB_QP_CREATE_SCATTER_FCS ) { if ( init_attr -> qp_type != IB_QPT_RAW_PACKET ) { mlx5_ib_dbg ( dev , \"Scatter<S2SV_blank>FCS<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>only<S2SV_blank>for<S2SV_blank>Raw<S2SV_blank>Packet<S2SV_blank>QPs\" ) ; return - EOPNOTSUPP ; } if ( ! MLX5_CAP_GEN ( dev -> mdev , eth_net_offloads ) || ! MLX5_CAP_ETH ( dev -> mdev , scatter_fcs ) ) { mlx5_ib_dbg ( dev , \"Scatter<S2SV_blank>FCS<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EOPNOTSUPP ; } qp -> flags |= MLX5_IB_QP_CAP_SCATTER_FCS ; } if ( init_attr -> sq_sig_type == IB_SIGNAL_ALL_WR ) qp -> sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE ; if ( init_attr -> create_flags & IB_QP_CREATE_CVLAN_STRIPPING ) { if ( ! ( MLX5_CAP_GEN ( dev -> mdev , eth_net_offloads ) && MLX5_CAP_ETH ( dev -> mdev , vlan_cap ) ) || ( init_attr -> qp_type != IB_QPT_RAW_PACKET ) ) return - EOPNOTSUPP ; qp -> flags |= MLX5_IB_QP_CVLAN_STRIPPING ; } if ( pd && pd -> uobject ) { if ( ib_copy_from_udata ( & ucmd , udata , sizeof ( ucmd ) ) ) { mlx5_ib_dbg ( dev , \"copy<S2SV_blank>failed\\\\n\" ) ; return - EFAULT ; } err = get_qp_user_index ( to_mucontext ( pd -> uobject -> context ) , & ucmd , udata -> inlen , & uidx ) ; if ( err ) return err ; qp -> wq_sig = ! ! ( ucmd . flags & MLX5_QP_FLAG_SIGNATURE ) ; qp -> scat_cqe = ! ! ( ucmd . flags & MLX5_QP_FLAG_SCATTER_CQE ) ; if ( ucmd . flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS ) { if ( init_attr -> qp_type != IB_QPT_RAW_PACKET || ! tunnel_offload_supported ( mdev ) ) { mlx5_ib_dbg ( dev , \"Tunnel<S2SV_blank>offload<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EOPNOTSUPP ; } qp -> tunnel_offload_en = true ; } if ( init_attr -> create_flags & IB_QP_CREATE_SOURCE_QPN ) { if ( init_attr -> qp_type != IB_QPT_UD || ( MLX5_CAP_GEN ( dev -> mdev , port_type ) != MLX5_CAP_PORT_TYPE_IB ) || ! mlx5_get_flow_namespace ( dev -> mdev , MLX5_FLOW_NAMESPACE_BYPASS ) ) { mlx5_ib_dbg ( dev , \"Source<S2SV_blank>QP<S2SV_blank>option<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EOPNOTSUPP ; } qp -> flags |= MLX5_IB_QP_UNDERLAY ; qp -> underlay_qpn = init_attr -> source_qpn ; } } else { qp -> wq_sig = ! ! wq_signature ; } base = ( init_attr -> qp_type == IB_QPT_RAW_PACKET || qp -> flags & MLX5_IB_QP_UNDERLAY ) ? & qp -> raw_packet_qp . rq . base : & qp -> trans_qp . base ; qp -> has_rq = qp_has_rq ( init_attr ) ; err = set_rq_size ( dev , & init_attr -> cap , qp -> has_rq , qp , ( pd && pd -> uobject ) ? & ucmd : NULL ) ; if ( err ) { mlx5_ib_dbg ( dev , \"err<S2SV_blank>%d\\\\n\" , err ) ; return err ; } if ( pd ) { if ( pd -> uobject ) { __u32 max_wqes = 1 << MLX5_CAP_GEN ( mdev , log_max_qp_sz ) ; mlx5_ib_dbg ( dev , \"requested<S2SV_blank>sq_wqe_count<S2SV_blank>(%d)\\\\n\" , ucmd . sq_wqe_count ) ; if ( ucmd . rq_wqe_shift != qp -> rq . wqe_shift || ucmd . rq_wqe_count != qp -> rq . wqe_cnt ) { mlx5_ib_dbg ( dev , \"invalid<S2SV_blank>rq<S2SV_blank>params\\\\n\" ) ; return - EINVAL ; } if ( ucmd . sq_wqe_count > max_wqes ) { mlx5_ib_dbg ( dev , \"requested<S2SV_blank>sq_wqe_count<S2SV_blank>(%d)<S2SV_blank>><S2SV_blank>max<S2SV_blank>allowed<S2SV_blank>(%d)\\\\n\" , ucmd . sq_wqe_count , max_wqes ) ; return - EINVAL ; } if ( init_attr -> create_flags & mlx5_ib_create_qp_sqpn_qp1 ( ) ) { mlx5_ib_dbg ( dev , \"user-space<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>UD<S2SV_blank>QPs<S2SV_blank>spoofing<S2SV_blank>as<S2SV_blank>QP1\\\\n\" ) ; return - EINVAL ; } err = create_user_qp ( dev , pd , qp , udata , init_attr , & in , & resp , & inlen , base ) ; if ( err ) mlx5_ib_dbg ( dev , \"err<S2SV_blank>%d\\\\n\" , err ) ; } else { err = create_kernel_qp ( dev , init_attr , qp , & in , & inlen , base ) ; if ( err ) mlx5_ib_dbg ( dev , \"err<S2SV_blank>%d\\\\n\" , err ) ; } if ( err ) return err ; } else { in = kvzalloc ( inlen , GFP_KERNEL ) ; if ( ! in ) return - ENOMEM ; qp -> create_type = MLX5_QP_EMPTY ; } if ( is_sqp ( init_attr -> qp_type ) ) qp -> port = init_attr -> port_num ; qpc = MLX5_ADDR_OF ( create_qp_in , in , qpc ) ; MLX5_SET ( qpc , qpc , st , mlx5_st ) ; MLX5_SET ( qpc , qpc , pm_state , MLX5_QP_PM_MIGRATED ) ; if ( init_attr -> qp_type != MLX5_IB_QPT_REG_UMR ) MLX5_SET ( qpc , qpc , pd , to_mpd ( pd ? pd : devr -> p0 ) -> pdn ) ; else MLX5_SET ( qpc , qpc , latency_sensitive , 1 ) ; if ( qp -> wq_sig ) MLX5_SET ( qpc , qpc , wq_signature , 1 ) ; if ( qp -> flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK ) MLX5_SET ( qpc , qpc , block_lb_mc , 1 ) ; if ( qp -> flags & MLX5_IB_QP_CROSS_CHANNEL ) MLX5_SET ( qpc , qpc , cd_master , 1 ) ; if ( qp -> flags & MLX5_IB_QP_MANAGED_SEND ) MLX5_SET ( qpc , qpc , cd_slave_send , 1 ) ; if ( qp -> flags & MLX5_IB_QP_MANAGED_RECV ) MLX5_SET ( qpc , qpc , cd_slave_receive , 1 ) ; if ( qp -> scat_cqe && is_connected ( init_attr -> qp_type ) ) { int rcqe_sz ; int scqe_sz ; rcqe_sz = mlx5_ib_get_cqe_size ( dev , init_attr -> recv_cq ) ; scqe_sz = mlx5_ib_get_cqe_size ( dev , init_attr -> send_cq ) ; if ( rcqe_sz == 128 ) MLX5_SET ( qpc , qpc , cs_res , MLX5_RES_SCAT_DATA64_CQE ) ; else MLX5_SET ( qpc , qpc , cs_res , MLX5_RES_SCAT_DATA32_CQE ) ; if ( init_attr -> sq_sig_type == IB_SIGNAL_ALL_WR ) { if ( scqe_sz == 128 ) MLX5_SET ( qpc , qpc , cs_req , MLX5_REQ_SCAT_DATA64_CQE ) ; else MLX5_SET ( qpc , qpc , cs_req , MLX5_REQ_SCAT_DATA32_CQE ) ; } } if ( qp -> rq . wqe_cnt ) { MLX5_SET ( qpc , qpc , log_rq_stride , qp -> rq . wqe_shift - 4 ) ; MLX5_SET ( qpc , qpc , log_rq_size , ilog2 ( qp -> rq . wqe_cnt ) ) ; } MLX5_SET ( qpc , qpc , rq_type , get_rx_type ( qp , init_attr ) ) ; if ( qp -> sq . wqe_cnt ) { MLX5_SET ( qpc , qpc , log_sq_size , ilog2 ( qp -> sq . wqe_cnt ) ) ; } else { MLX5_SET ( qpc , qpc , no_sq , 1 ) ; if ( init_attr -> srq && init_attr -> srq -> srq_type == IB_SRQT_TM ) MLX5_SET ( qpc , qpc , offload_type , MLX5_QPC_OFFLOAD_TYPE_RNDV ) ; } switch ( init_attr -> qp_type ) { case IB_QPT_XRC_TGT : MLX5_SET ( qpc , qpc , cqn_rcv , to_mcq ( devr -> c0 ) -> mcq . cqn ) ; MLX5_SET ( qpc , qpc , cqn_snd , to_mcq ( devr -> c0 ) -> mcq . cqn ) ; MLX5_SET ( qpc , qpc , srqn_rmpn_xrqn , to_msrq ( devr -> s0 ) -> msrq . srqn ) ; MLX5_SET ( qpc , qpc , xrcd , to_mxrcd ( init_attr -> xrcd ) -> xrcdn ) ; break ; case IB_QPT_XRC_INI : MLX5_SET ( qpc , qpc , cqn_rcv , to_mcq ( devr -> c0 ) -> mcq . cqn ) ; MLX5_SET ( qpc , qpc , xrcd , to_mxrcd ( devr -> x1 ) -> xrcdn ) ; MLX5_SET ( qpc , qpc , srqn_rmpn_xrqn , to_msrq ( devr -> s0 ) -> msrq . srqn ) ; break ; default : if ( init_attr -> srq ) { MLX5_SET ( qpc , qpc , xrcd , to_mxrcd ( devr -> x0 ) -> xrcdn ) ; MLX5_SET ( qpc , qpc , srqn_rmpn_xrqn , to_msrq ( init_attr -> srq ) -> msrq . srqn ) ; } else { MLX5_SET ( qpc , qpc , xrcd , to_mxrcd ( devr -> x1 ) -> xrcdn ) ; MLX5_SET ( qpc , qpc , srqn_rmpn_xrqn , to_msrq ( devr -> s1 ) -> msrq . srqn ) ; } } if ( init_attr -> send_cq ) MLX5_SET ( qpc , qpc , cqn_snd , to_mcq ( init_attr -> send_cq ) -> mcq . cqn ) ; if ( init_attr -> recv_cq ) MLX5_SET ( qpc , qpc , cqn_rcv , to_mcq ( init_attr -> recv_cq ) -> mcq . cqn ) ; MLX5_SET64 ( qpc , qpc , dbr_addr , qp -> db . dma ) ; if ( MLX5_CAP_GEN ( mdev , cqe_version ) == MLX5_CQE_VERSION_V1 ) MLX5_SET ( qpc , qpc , user_index , uidx ) ; if ( init_attr -> qp_type == IB_QPT_UD && ( init_attr -> create_flags & IB_QP_CREATE_IPOIB_UD_LSO ) ) { MLX5_SET ( qpc , qpc , ulp_stateless_offload_mode , 1 ) ; qp -> flags |= MLX5_IB_QP_LSO ; } if ( init_attr -> create_flags & IB_QP_CREATE_PCI_WRITE_END_PADDING ) { if ( ! MLX5_CAP_GEN ( dev -> mdev , end_pad ) ) { mlx5_ib_dbg ( dev , \"scatter<S2SV_blank>end<S2SV_blank>padding<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; err = - EOPNOTSUPP ; goto err ; } else if ( init_attr -> qp_type != IB_QPT_RAW_PACKET ) { MLX5_SET ( qpc , qpc , end_padding_mode , MLX5_WQ_END_PAD_MODE_ALIGN ) ; } else { qp -> flags |= MLX5_IB_QP_PCI_WRITE_END_PADDING ; } } if ( inlen < 0 ) { err = - EINVAL ; goto err ; } if ( init_attr -> qp_type == IB_QPT_RAW_PACKET || qp -> flags & MLX5_IB_QP_UNDERLAY ) { qp -> raw_packet_qp . sq . ubuffer . buf_addr = ucmd . sq_buf_addr ; raw_packet_qp_copy_info ( qp , & qp -> raw_packet_qp ) ; err = create_raw_packet_qp ( dev , qp , in , inlen , pd ) ; } else { err = mlx5_core_create_qp ( dev -> mdev , & base -> mqp , in , inlen ) ; } if ( err ) { mlx5_ib_dbg ( dev , \"create<S2SV_blank>qp<S2SV_blank>failed\\\\n\" ) ; goto err_create ; } kvfree ( in ) ; base -> container_mibqp = qp ; base -> mqp . event = mlx5_ib_qp_event ; get_cqs ( init_attr -> qp_type , init_attr -> send_cq , init_attr -> recv_cq , & send_cq , & recv_cq ) ; spin_lock_irqsave ( & dev -> reset_flow_resource_lock , flags ) ; mlx5_ib_lock_cqs ( send_cq , recv_cq ) ; list_add_tail ( & qp -> qps_list , & dev -> qp_list ) ; if ( send_cq ) list_add_tail ( & qp -> cq_send_list , & send_cq -> list_send_qp ) ; if ( recv_cq ) list_add_tail ( & qp -> cq_recv_list , & recv_cq -> list_recv_qp ) ; mlx5_ib_unlock_cqs ( send_cq , recv_cq ) ; spin_unlock_irqrestore ( & dev -> reset_flow_resource_lock , flags ) ; return 0 ; err_create : if ( qp -> create_type == MLX5_QP_USER ) destroy_qp_user ( dev , pd , qp , base ) ; else if ( qp -> create_type == MLX5_QP_KERNEL ) destroy_qp_kernel ( dev , qp ) ; err : kvfree ( in ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct mlx5_ib_create_qp_resp resp = { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void pack_inter_mode_mvs ( VP9_COMP * cpi , const MODE_INFO * mi , <S2SV_StartBug> vp9_writer * w ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> const nmv_context * nmvc = & cm -> fc . nmvc ; <S2SV_EndBug> const MACROBLOCK * const x = & cpi -> mb ; const MACROBLOCKD * const xd = & x -> e_mbd ; const struct segmentation * const seg = & cm -> seg ; const MB_MODE_INFO * const mbmi = & mi -> mbmi ; <S2SV_StartBug> const MB_PREDICTION_MODE mode = mbmi -> mode ; <S2SV_EndBug> const int segment_id = mbmi -> segment_id ; const BLOCK_SIZE bsize = mbmi -> sb_type ; const int allow_hp = cm -> allow_high_precision_mv ; const int is_inter = is_inter_block ( mbmi ) ; const int is_compound = has_second_ref ( mbmi ) ; int skip , ref ; if ( seg -> update_map ) { if ( seg -> temporal_update ) { const int pred_flag = mbmi -> seg_id_predicted ; <S2SV_StartBug> vp9_prob pred_prob = vp9_get_pred_prob_seg_id ( seg , xd ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_write ( w , pred_flag , pred_prob ) ; <S2SV_EndBug> if ( ! pred_flag ) write_segment_id ( w , seg , segment_id ) ; } else { write_segment_id ( w , seg , segment_id ) ; } } <S2SV_StartBug> skip = write_skip ( cpi , segment_id , mi , w ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! vp9_segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) ) <S2SV_EndBug> <S2SV_StartBug> vp9_write ( w , is_inter , vp9_get_intra_inter_prob ( cm , xd ) ) ; <S2SV_EndBug> if ( bsize >= BLOCK_8X8 && cm -> tx_mode == TX_MODE_SELECT && ! ( is_inter && <S2SV_StartBug> ( skip || vp9_segfeature_active ( seg , segment_id , SEG_LVL_SKIP ) ) ) ) { <S2SV_EndBug> <S2SV_StartBug> write_selected_tx_size ( cpi , mbmi -> tx_size , bsize , w ) ; <S2SV_EndBug> } if ( ! is_inter ) { if ( bsize >= BLOCK_8X8 ) { <S2SV_StartBug> write_intra_mode ( w , mode , cm -> fc . y_mode_prob [ size_group_lookup [ bsize ] ] ) ; <S2SV_EndBug> } else { int idx , idy ; const int num_4x4_w = num_4x4_blocks_wide_lookup [ bsize ] ; const int num_4x4_h = num_4x4_blocks_high_lookup [ bsize ] ; for ( idy = 0 ; idy < 2 ; idy += num_4x4_h ) { for ( idx = 0 ; idx < 2 ; idx += num_4x4_w ) { <S2SV_StartBug> const MB_PREDICTION_MODE b_mode = mi -> bmi [ idy * 2 + idx ] . as_mode ; <S2SV_EndBug> <S2SV_StartBug> write_intra_mode ( w , b_mode , cm -> fc . y_mode_prob [ 0 ] ) ; <S2SV_EndBug> } } } <S2SV_StartBug> write_intra_mode ( w , mbmi -> uv_mode , cm -> fc . uv_mode_prob [ mode ] ) ; <S2SV_EndBug> } else { <S2SV_StartBug> const int mode_ctx = mbmi -> mode_context [ mbmi -> ref_frame [ 0 ] ] ; <S2SV_EndBug> <S2SV_StartBug> const vp9_prob * const inter_probs = cm -> fc . inter_mode_probs [ mode_ctx ] ; <S2SV_EndBug> <S2SV_StartBug> write_ref_frames ( cpi , w ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! vp9_segfeature_active ( seg , segment_id , SEG_LVL_SKIP ) ) { <S2SV_EndBug> if ( bsize >= BLOCK_8X8 ) { write_inter_mode ( w , mode , inter_probs ) ; <S2SV_StartBug> ++ cm -> counts . inter_mode [ mode_ctx ] [ INTER_OFFSET ( mode ) ] ; <S2SV_EndBug> } } if ( cm -> interp_filter == SWITCHABLE ) { const int ctx = vp9_get_pred_context_switchable_interp ( xd ) ; vp9_write_token ( w , vp9_switchable_interp_tree , <S2SV_StartBug> cm -> fc . switchable_interp_prob [ ctx ] , <S2SV_EndBug> <S2SV_StartBug> & switchable_interp_encodings [ mbmi -> interp_filter ] ) ; <S2SV_EndBug> } else { assert ( mbmi -> interp_filter == cm -> interp_filter ) ; } if ( bsize < BLOCK_8X8 ) { const int num_4x4_w = num_4x4_blocks_wide_lookup [ bsize ] ; const int num_4x4_h = num_4x4_blocks_high_lookup [ bsize ] ; int idx , idy ; for ( idy = 0 ; idy < 2 ; idy += num_4x4_h ) { for ( idx = 0 ; idx < 2 ; idx += num_4x4_w ) { const int j = idy * 2 + idx ; <S2SV_StartBug> const MB_PREDICTION_MODE b_mode = mi -> bmi [ j ] . as_mode ; <S2SV_EndBug> <S2SV_StartBug> write_inter_mode ( w , b_mode , inter_probs ) ; <S2SV_EndBug> ++ cm -> counts . inter_mode [ mode_ctx ] [ INTER_OFFSET ( b_mode ) ] ; if ( b_mode == NEWMV ) { for ( ref = 0 ; ref < 1 + is_compound ; ++ ref ) vp9_encode_mv ( cpi , w , & mi -> bmi [ j ] . as_mv [ ref ] . as_mv , <S2SV_StartBug> & mbmi -> ref_mvs [ mbmi -> ref_frame [ ref ] ] [ 0 ] . as_mv , <S2SV_EndBug> nmvc , allow_hp ) ; } } } } else { if ( mode == NEWMV ) { for ( ref = 0 ; ref < 1 + is_compound ; ++ ref ) vp9_encode_mv ( cpi , w , & mbmi -> mv [ ref ] . as_mv , <S2SV_StartBug> & mbmi -> ref_mvs [ mbmi -> ref_frame [ ref ] ] [ 0 ] . as_mv , nmvc , <S2SV_EndBug> allow_hp ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * mi , vpx_writer <S2SV_ModEnd> * w ) <S2SV_ModStart> cm -> fc -> nmvc ; const MACROBLOCK * const x = & cpi -> td . <S2SV_ModEnd> mb ; const <S2SV_ModStart> mbmi ; const MB_MODE_INFO_EXT * const mbmi_ext = x -> mbmi_ext ; const PREDICTION_MODE <S2SV_ModEnd> mode = mbmi <S2SV_ModStart> -> seg_id_predicted ; vpx_prob <S2SV_ModEnd> pred_prob = vp9_get_pred_prob_seg_id <S2SV_ModStart> xd ) ; vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> = write_skip ( cm , xd <S2SV_ModEnd> , segment_id , <S2SV_ModStart> if ( ! segfeature_active <S2SV_ModEnd> ( seg , <S2SV_ModStart> SEG_LVL_REF_FRAME ) ) vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> ( is_inter && skip <S2SV_ModEnd> ) ) { <S2SV_ModStart> { write_selected_tx_size ( cm , xd <S2SV_ModEnd> , w ) <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> y_mode_prob [ size_group_lookup <S2SV_ModStart> ) { const PREDICTION_MODE <S2SV_ModEnd> b_mode = mi <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> y_mode_prob [ 0 <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> uv_mode_prob [ mode <S2SV_ModStart> int mode_ctx = mbmi_ext <S2SV_ModEnd> -> mode_context [ <S2SV_ModStart> ] ; const vpx_prob <S2SV_ModEnd> * const inter_probs <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> inter_mode_probs [ mode_ctx <S2SV_ModStart> ; write_ref_frames ( cm , xd <S2SV_ModEnd> , w ) <S2SV_ModStart> if ( ! segfeature_active <S2SV_ModEnd> ( seg , <S2SV_ModStart> inter_probs ) ; <S2SV_ModEnd> } } if <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> switchable_interp_prob [ ctx <S2SV_ModStart> interp_filter ] ) ; ++ cpi -> interp_filter_selected [ 0 ] [ mbmi -> interp_filter ] <S2SV_ModStart> idx ; const PREDICTION_MODE <S2SV_ModEnd> b_mode = mi <S2SV_ModStart> , inter_probs ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> as_mv , & mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> as_mv , & mbmi_ext <S2SV_ModEnd> -> ref_mvs [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8970\n\n```\nCWE-476 static int skcipher_accept_parent ( void * private , struct sock * sk ) { struct skcipher_ctx * ctx ; struct alg_sock * ask = alg_sk ( sk ) ; <S2SV_StartBug> unsigned int len = sizeof ( * ctx ) + crypto_skcipher_reqsize ( private ) ; <S2SV_EndBug> ctx = sock_kmalloc ( sk , len , GFP_KERNEL ) ; if ( ! ctx ) return - ENOMEM ; <S2SV_StartBug> ctx -> iv = sock_kmalloc ( sk , crypto_skcipher_ivsize ( private ) , <S2SV_EndBug> GFP_KERNEL ) ; if ( ! ctx -> iv ) { sock_kfree_s ( sk , ctx , len ) ; return - ENOMEM ; } <S2SV_StartBug> memset ( ctx -> iv , 0 , crypto_skcipher_ivsize ( private ) ) ; <S2SV_EndBug> INIT_LIST_HEAD ( & ctx -> tsgl ) ; ctx -> len = len ; ctx -> used = 0 ; ctx -> more = 0 ; ctx -> merge = 0 ; ctx -> enc = 0 ; atomic_set ( & ctx -> inflight , 0 ) ; af_alg_init_completion ( & ctx -> completion ) ; ask -> private = ctx ; <S2SV_StartBug> skcipher_request_set_tfm ( & ctx -> req , private ) ; <S2SV_EndBug> skcipher_request_set_callback ( & ctx -> req , CRYPTO_TFM_REQ_MAY_BACKLOG , af_alg_complete , & ctx -> completion ) ; sk -> sk_destruct = skcipher_sock_destruct ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk ) ; struct skcipher_tfm * tfm = private ; struct crypto_skcipher * skcipher = tfm -> skcipher ; <S2SV_ModStart> + crypto_skcipher_reqsize ( skcipher ) ; if ( ! tfm -> has_key ) return - ENOKEY <S2SV_ModEnd> ; ctx = <S2SV_ModStart> , crypto_skcipher_ivsize ( skcipher <S2SV_ModEnd> ) , GFP_KERNEL <S2SV_ModStart> , crypto_skcipher_ivsize ( skcipher ) ) ; INIT_LIST_HEAD ( & ctx -> tsgl ) ; ctx -> len = len ; ctx -> used = 0 ; ctx -> more = 0 ; ctx -> merge = 0 ; ctx -> enc = 0 ; atomic_set ( & ctx -> inflight , 0 ) ; af_alg_init_completion ( & ctx -> completion ) ; ask -> private <S2SV_ModEnd> = ctx ; <S2SV_ModStart> -> req , skcipher <S2SV_ModEnd> ) ; skcipher_request_set_callback\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8900\n\n```\nCWE-20 static Image * ReadHDRImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char format [ MaxTextExtent ] , keyword [ MaxTextExtent ] , tag [ MaxTextExtent ] , value [ MaxTextExtent ] ; double gamma ; Image * image ; int c ; MagickBooleanType status , value_expected ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; ssize_t count , y ; unsigned char * end , pixel [ 4 ] , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> columns = 0 ; image -> rows = 0 ; * format = '\\\\0' ; c = ReadBlobByte ( image ) ; if ( c == EOF ) { image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } while ( isgraph ( c ) && ( image -> columns == 0 ) && ( image -> rows == 0 ) ) { if ( c == ( int ) '#' ) { char * comment ; register char * p ; size_t length ; length = MaxTextExtent ; comment = AcquireString ( ( char * ) NULL ) ; for ( p = comment ; comment != ( char * ) NULL ; p ++ ) { c = ReadBlobByte ( image ) ; if ( ( c == EOF ) || ( c == ( int ) '\\\\n' ) ) break ; if ( ( size_t ) ( p - comment + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; comment = ( char * ) ResizeQuantumMemory ( comment , length + MaxTextExtent , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) break ; p = comment + strlen ( comment ) ; } * p = ( char ) c ; } if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; * p = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; c = ReadBlobByte ( image ) ; } else if ( isalnum ( c ) == MagickFalse ) c = ReadBlobByte ( image ) ; else { register char * p ; p = keyword ; do { if ( ( size_t ) ( p - keyword ) < ( MaxTextExtent - 1 ) ) * p ++ = c ; c = ReadBlobByte ( image ) ; } while ( isalnum ( c ) || ( c == '_' ) ) ; * p = '\\\\0' ; value_expected = MagickFalse ; while ( ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) || ( c == '=' ) ) { if ( c == '=' ) value_expected = MagickTrue ; c = ReadBlobByte ( image ) ; } if ( LocaleCompare ( keyword , \"Y\" ) == 0 ) value_expected = MagickTrue ; if ( value_expected == MagickFalse ) continue ; p = value ; <S2SV_StartBug> while ( ( c != '\\\\n' ) && ( c != '\\\\0' ) ) <S2SV_EndBug> { if ( ( size_t ) ( p - value ) < ( MaxTextExtent - 1 ) ) * p ++ = c ; c = ReadBlobByte ( image ) ; } * p = '\\\\0' ; switch ( * keyword ) { case 'F' : case 'f' : { if ( LocaleCompare ( keyword , \"format\" ) == 0 ) { ( void ) CopyMagickString ( format , value , MaxTextExtent ) ; break ; } ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value , exception ) ; break ; } case 'G' : case 'g' : { if ( LocaleCompare ( keyword , \"gamma\" ) == 0 ) { image -> gamma = StringToDouble ( value , ( char * * ) NULL ) ; break ; } ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value , exception ) ; break ; } case 'P' : case 'p' : { if ( LocaleCompare ( keyword , \"primaries\" ) == 0 ) { float chromaticity [ 6 ] , white_point [ 2 ] ; <S2SV_StartBug> ( void ) sscanf ( value , \"%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g\" , <S2SV_EndBug> & chromaticity [ 0 ] , & chromaticity [ 1 ] , & chromaticity [ 2 ] , & chromaticity [ 3 ] , & chromaticity [ 4 ] , & chromaticity [ 5 ] , <S2SV_StartBug> & white_point [ 0 ] , & white_point [ 1 ] ) ; <S2SV_EndBug> image -> chromaticity . red_primary . x = chromaticity [ 0 ] ; image -> chromaticity . red_primary . y = chromaticity [ 1 ] ; image -> chromaticity . green_primary . x = chromaticity [ 2 ] ; image -> chromaticity . green_primary . y = chromaticity [ 3 ] ; image -> chromaticity . blue_primary . x = chromaticity [ 4 ] ; image -> chromaticity . blue_primary . y = chromaticity [ 5 ] ; image -> chromaticity . white_point . x = white_point [ 0 ] , image -> chromaticity . white_point . y = white_point [ 1 ] ; <S2SV_StartBug> break ; <S2SV_EndBug> } ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value , exception ) ; break ; } case 'Y' : case 'y' : { char target [ ] = \"Y\" ; if ( strcmp ( keyword , target ) == 0 ) { int height , width ; <S2SV_StartBug> ( void ) sscanf ( value , \"%d<S2SV_blank>+X<S2SV_blank>%d\" , & height , & width ) ; <S2SV_EndBug> image -> columns = ( size_t ) width ; <S2SV_StartBug> image -> rows = ( size_t ) height ; <S2SV_EndBug> break ; } ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value , exception ) ; break ; } default : { ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value , exception ) ; break ; } } } if ( ( image -> columns == 0 ) && ( image -> rows == 0 ) ) while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; } if ( ( LocaleCompare ( format , \"32-bit_rle_rgbe\" ) != 0 ) && ( LocaleCompare ( format , \"32-bit_rle_xyze\" ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; ( void ) SetImageColorspace ( image , RGBColorspace , exception ) ; if ( LocaleCompare ( format , \"32-bit_rle_xyze\" ) == 0 ) ( void ) SetImageColorspace ( image , XYZColorspace , exception ) ; image -> compression = ( image -> columns < 8 ) || ( image -> columns > 0x7ffff ) ? NoCompression : RLECompression ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; pixels = ( unsigned char * ) AcquireQuantumMemory ( image -> columns , 4 * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { if ( image -> compression != RLECompression ) { count = ReadBlob ( image , 4 * image -> columns * sizeof ( * pixels ) , pixels ) ; if ( count != ( ssize_t ) ( 4 * image -> columns * sizeof ( * pixels ) ) ) break ; } else { count = ReadBlob ( image , 4 * sizeof ( * pixel ) , pixel ) ; if ( count != 4 ) break ; if ( ( size_t ) ( ( ( ( size_t ) pixel [ 2 ] ) << 8 ) | pixel [ 3 ] ) != image -> columns ) { ( void ) memcpy ( pixels , pixel , 4 * sizeof ( * pixel ) ) ; count = ReadBlob ( image , 4 * ( image -> columns - 1 ) * sizeof ( * pixels ) , pixels + 4 ) ; image -> compression = NoCompression ; } else { p = pixels ; for ( i = 0 ; i < 4 ; i ++ ) { end = & pixels [ ( i + 1 ) * image -> columns ] ; while ( p < end ) { count = ReadBlob ( image , 2 * sizeof ( * pixel ) , pixel ) ; if ( count < 1 ) break ; if ( pixel [ 0 ] > 128 ) { count = ( ssize_t ) pixel [ 0 ] - 128 ; if ( ( count == 0 ) || ( count > ( ssize_t ) ( end - p ) ) ) break ; while ( count -- > 0 ) * p ++ = pixel [ 1 ] ; } else { count = ( ssize_t ) pixel [ 0 ] ; if ( ( count == 0 ) || ( count > ( ssize_t ) ( end - p ) ) ) break ; * p ++ = pixel [ 1 ] ; if ( -- count > 0 ) { count = ReadBlob ( image , ( size_t ) count * sizeof ( * p ) , p ) ; if ( count < 1 ) break ; p += count ; } } } } } } q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; i = 0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> compression == RLECompression ) { pixel [ 0 ] = pixels [ x ] ; pixel [ 1 ] = pixels [ x + image -> columns ] ; pixel [ 2 ] = pixels [ x + 2 * image -> columns ] ; pixel [ 3 ] = pixels [ x + 3 * image -> columns ] ; } else { pixel [ 0 ] = pixels [ i ++ ] ; pixel [ 1 ] = pixels [ i ++ ] ; pixel [ 2 ] = pixels [ i ++ ] ; pixel [ 3 ] = pixels [ i ++ ] ; } SetPixelRed ( image , 0 , q ) ; SetPixelGreen ( image , 0 , q ) ; SetPixelBlue ( image , 0 , q ) ; if ( pixel [ 3 ] != 0 ) { gamma = pow ( 2.0 , pixel [ 3 ] - ( 128.0 + 8.0 ) ) ; SetPixelRed ( image , ClampToQuantum ( QuantumRange * gamma * pixel [ 0 ] ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( QuantumRange * gamma * pixel [ 1 ] ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( QuantumRange * gamma * pixel [ 2 ] ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != '\\\\0' ) && ( c != EOF ) <S2SV_ModStart> 2 ] ; if ( <S2SV_ModEnd> sscanf ( value <S2SV_ModStart> 1 ] ) == 8 ) { <S2SV_ModEnd> image -> chromaticity <S2SV_ModStart> 1 ] ; } <S2SV_ModStart> , width ; if ( <S2SV_ModEnd> sscanf ( value <S2SV_ModStart> & width ) == 2 ) { <S2SV_ModEnd> image -> columns <S2SV_ModStart> ) height ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14363\n\n```\nCWE-22 static int msg_cache_check ( const char * id , struct BodyCache * bcache , void * data ) { struct Context * ctx = ( struct Context * ) data ; if ( ! ctx ) return - 1 ; struct PopData * pop_data = ( struct PopData * ) ctx -> data ; if ( ! pop_data ) return - 1 ; # ifdef USE_HCACHE if ( strcmp ( HC_FNAME \".\" HC_FEXT , id ) == 0 ) return 0 ; # endif for ( int i = 0 ; i < ctx -> msgcount ; i ++ ) { if ( ctx -> hdrs [ i ] -> data && ( mutt_str_strcmp ( ctx -> hdrs [ i ] -> data , id ) == 0 ) ) return 0 ; } <S2SV_StartBug> return mutt_bcache_del ( bcache , id ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( bcache , cache_id ( id ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6254\n\n```\nCWE-119 static int parse_packet ( sockent_t * se , void * buffer , size_t buffer_size , int flags , const char * username ) { int status ; value_list_t vl = VALUE_LIST_INIT ; notification_t n ; # if HAVE_LIBGCRYPT int packet_was_signed = ( flags & PP_SIGNED ) ; int packet_was_encrypted = ( flags & PP_ENCRYPTED ) ; int printed_ignore_warning = 0 ; # endif memset ( & vl , '\\\\0' , sizeof ( vl ) ) ; memset ( & n , '\\\\0' , sizeof ( n ) ) ; status = 0 ; while ( ( status == 0 ) && ( 0 < buffer_size ) && ( ( unsigned int ) buffer_size > sizeof ( part_header_t ) ) ) { uint16_t pkg_length ; uint16_t pkg_type ; memcpy ( ( void * ) & pkg_type , ( void * ) buffer , sizeof ( pkg_type ) ) ; memcpy ( ( void * ) & pkg_length , ( void * ) ( buffer + sizeof ( pkg_type ) ) , sizeof ( pkg_length ) ) ; pkg_length = ntohs ( pkg_length ) ; pkg_type = ntohs ( pkg_type ) ; if ( pkg_length > buffer_size ) break ; if ( pkg_length < ( 2 * sizeof ( uint16_t ) ) ) break ; if ( pkg_type == TYPE_ENCR_AES256 ) { status = parse_part_encr_aes256 ( se , & buffer , & buffer_size , flags ) ; if ( status != 0 ) { ERROR ( \"network<S2SV_blank>plugin:<S2SV_blank>Decrypting<S2SV_blank>AES256<S2SV_blank>\" \"part<S2SV_blank>failed<S2SV_blank>\" \"with<S2SV_blank>status<S2SV_blank>%i.\" , status ) ; break ; } } # if HAVE_LIBGCRYPT else if ( ( se -> data . server . security_level == SECURITY_LEVEL_ENCRYPT ) && ( packet_was_encrypted == 0 ) ) { if ( printed_ignore_warning == 0 ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>Unencrypted<S2SV_blank>packet<S2SV_blank>or<S2SV_blank>\" \"part<S2SV_blank>has<S2SV_blank>been<S2SV_blank>ignored.\" ) ; printed_ignore_warning = 1 ; } buffer = ( ( char * ) buffer ) + pkg_length ; <S2SV_StartBug> continue ; <S2SV_EndBug> } # endif else if ( pkg_type == TYPE_SIGN_SHA256 ) { status = parse_part_sign_sha256 ( se , & buffer , & buffer_size , flags ) ; if ( status != 0 ) { ERROR ( \"network<S2SV_blank>plugin:<S2SV_blank>Verifying<S2SV_blank>HMAC-SHA-256<S2SV_blank>\" \"signature<S2SV_blank>failed<S2SV_blank>\" \"with<S2SV_blank>status<S2SV_blank>%i.\" , status ) ; break ; } } # if HAVE_LIBGCRYPT else if ( ( se -> data . server . security_level == SECURITY_LEVEL_SIGN ) && ( packet_was_encrypted == 0 ) && ( packet_was_signed == 0 ) ) { if ( printed_ignore_warning == 0 ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>Unsigned<S2SV_blank>packet<S2SV_blank>or<S2SV_blank>\" \"part<S2SV_blank>has<S2SV_blank>been<S2SV_blank>ignored.\" ) ; printed_ignore_warning = 1 ; } buffer = ( ( char * ) buffer ) + pkg_length ; <S2SV_StartBug> continue ; <S2SV_EndBug> } # endif else if ( pkg_type == TYPE_VALUES ) { status = parse_part_values ( & buffer , & buffer_size , & vl . values , & vl . values_len ) ; if ( status != 0 ) break ; network_dispatch_values ( & vl , username ) ; sfree ( vl . values ) ; } else if ( pkg_type == TYPE_TIME ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) { vl . time = TIME_T_TO_CDTIME_T ( tmp ) ; n . time = TIME_T_TO_CDTIME_T ( tmp ) ; } } else if ( pkg_type == TYPE_TIME_HR ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) { vl . time = ( cdtime_t ) tmp ; n . time = ( cdtime_t ) tmp ; } } else if ( pkg_type == TYPE_INTERVAL ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) vl . interval = TIME_T_TO_CDTIME_T ( tmp ) ; } else if ( pkg_type == TYPE_INTERVAL_HR ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) vl . interval = ( cdtime_t ) tmp ; } else if ( pkg_type == TYPE_HOST ) { status = parse_part_string ( & buffer , & buffer_size , vl . host , sizeof ( vl . host ) ) ; if ( status == 0 ) sstrncpy ( n . host , vl . host , sizeof ( n . host ) ) ; } else if ( pkg_type == TYPE_PLUGIN ) { status = parse_part_string ( & buffer , & buffer_size , vl . plugin , sizeof ( vl . plugin ) ) ; if ( status == 0 ) sstrncpy ( n . plugin , vl . plugin , sizeof ( n . plugin ) ) ; } else if ( pkg_type == TYPE_PLUGIN_INSTANCE ) { status = parse_part_string ( & buffer , & buffer_size , vl . plugin_instance , sizeof ( vl . plugin_instance ) ) ; if ( status == 0 ) sstrncpy ( n . plugin_instance , vl . plugin_instance , sizeof ( n . plugin_instance ) ) ; } else if ( pkg_type == TYPE_TYPE ) { status = parse_part_string ( & buffer , & buffer_size , vl . type , sizeof ( vl . type ) ) ; if ( status == 0 ) sstrncpy ( n . type , vl . type , sizeof ( n . type ) ) ; } else if ( pkg_type == TYPE_TYPE_INSTANCE ) { status = parse_part_string ( & buffer , & buffer_size , vl . type_instance , sizeof ( vl . type_instance ) ) ; if ( status == 0 ) sstrncpy ( n . type_instance , vl . type_instance , sizeof ( n . type_instance ) ) ; } else if ( pkg_type == TYPE_MESSAGE ) { status = parse_part_string ( & buffer , & buffer_size , n . message , sizeof ( n . message ) ) ; if ( status != 0 ) { } else if ( ( n . severity != NOTIF_FAILURE ) && ( n . severity != NOTIF_WARNING ) && ( n . severity != NOTIF_OKAY ) ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>\" \"Ignoring<S2SV_blank>notification<S2SV_blank>with<S2SV_blank>\" \"unknown<S2SV_blank>severity<S2SV_blank>%i.\" , n . severity ) ; } else if ( n . time <= 0 ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>\" \"Ignoring<S2SV_blank>notification<S2SV_blank>with<S2SV_blank>\" \"time<S2SV_blank>==<S2SV_blank>0.\" ) ; } else if ( strlen ( n . message ) <= 0 ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>\" \"Ignoring<S2SV_blank>notification<S2SV_blank>with<S2SV_blank>\" \"an<S2SV_blank>empty<S2SV_blank>message.\" ) ; } else { network_dispatch_notification ( & n ) ; } } else if ( pkg_type == TYPE_SEVERITY ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) n . severity = ( int ) tmp ; } else { DEBUG ( \"network<S2SV_blank>plugin:<S2SV_blank>parse_packet:<S2SV_blank>Unknown<S2SV_blank>part\" \"<S2SV_blank>type:<S2SV_blank>0x%04hx\" , pkg_type ) ; buffer = ( ( char * ) buffer ) + pkg_length ; <S2SV_StartBug> } <S2SV_EndBug> } if ( status == 0 && buffer_size > 0 ) WARNING ( \"network<S2SV_blank>plugin:<S2SV_blank>parse_packet:<S2SV_blank>Received<S2SV_blank>truncated<S2SV_blank>\" \"packet,<S2SV_blank>try<S2SV_blank>increasing<S2SV_blank>`MaxPacketSize\\'\" ) ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + pkg_length ; buffer_size -= ( size_t ) pkg_length ; <S2SV_ModStart> + pkg_length ; buffer_size -= ( size_t ) pkg_length ; <S2SV_ModStart> + pkg_length ; buffer_size -= ( size_t ) pkg_length ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010065\n\n```\nCWE-190 uint8_t hfs_cat_traverse ( HFS_INFO * hfs , TSK_HFS_BTREE_CB a_cb , void * ptr ) { TSK_FS_INFO * fs = & ( hfs -> fs_info ) ; uint32_t cur_node ; char * node ; uint16_t nodesize ; uint8_t is_done = 0 ; tsk_error_reset ( ) ; nodesize = tsk_getu16 ( fs -> endian , hfs -> catalog_header . nodesize ) ; if ( ( node = ( char * ) tsk_malloc ( nodesize ) ) == NULL ) return 1 ; cur_node = tsk_getu32 ( fs -> endian , hfs -> catalog_header . rootNode ) ; if ( cur_node == 0 ) { if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>\" \"empty<S2SV_blank>extents<S2SV_blank>btree\\\\n\" ) ; free ( node ) ; return 1 ; } if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>starting<S2SV_blank>at<S2SV_blank>\" \"root<S2SV_blank>node<S2SV_blank>%\" PRIu32 \";<S2SV_blank>nodesize<S2SV_blank>=<S2SV_blank>%\" PRIu16 \"\\\\n\" , cur_node , nodesize ) ; is_done = 0 ; while ( is_done == 0 ) { TSK_OFF_T cur_off ; uint16_t num_rec ; ssize_t cnt ; hfs_btree_node * node_desc ; if ( cur_node > tsk_getu32 ( fs -> endian , hfs -> catalog_header . totalNodes ) ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>Node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>for<S2SV_blank>file\" , cur_node ) ; free ( node ) ; return 1 ; } cur_off = cur_node * nodesize ; cnt = tsk_fs_attr_read ( hfs -> catalog_attr , cur_off , node , nodesize , 0 ) ; if ( cnt != nodesize ) { if ( cnt >= 0 ) { tsk_error_reset ( ) ; tsk_error_set_errno ( TSK_ERR_FS_READ ) ; } tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Error<S2SV_blank>reading<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%\" PRIuOFF , cur_node , cur_off ) ; free ( node ) ; return 1 ; } if ( nodesize < sizeof ( hfs_btree_node ) ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>Node<S2SV_blank>size<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>to<S2SV_blank>be<S2SV_blank>valid\" , nodesize ) ; free ( node ) ; return 1 ; } node_desc = ( hfs_btree_node * ) node ; num_rec = tsk_getu16 ( fs -> endian , node_desc -> num_rec ) ; if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>node<S2SV_blank>%\" PRIu32 \"<S2SV_blank>@<S2SV_blank>%\" PRIu64 \"<S2SV_blank>has<S2SV_blank>%\" PRIu16 \"<S2SV_blank>records\\\\n\" , cur_node , cur_off , num_rec ) ; if ( num_rec == 0 ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>zero<S2SV_blank>records<S2SV_blank>in<S2SV_blank>node<S2SV_blank>%\" PRIu32 , cur_node ) ; free ( node ) ; return 1 ; } if ( node_desc -> type == HFS_BT_NODE_TYPE_IDX ) { uint32_t next_node = 0 ; int rec ; for ( rec = 0 ; rec < num_rec ; ++ rec ) { size_t rec_off ; hfs_btree_key_cat * key ; uint8_t retval ; <S2SV_StartBug> uint16_t keylen ; <S2SV_EndBug> rec_off = tsk_getu16 ( fs -> endian , & node [ nodesize - ( rec + 1 ) * 2 ] ) ; if ( rec_off > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off , nodesize ) ; free ( node ) ; return 1 ; } key = ( hfs_btree_key_cat * ) & node [ rec_off ] ; keylen = 2 + tsk_getu16 ( hfs -> fs_info . endian , key -> key_len ) ; if ( ( keylen ) > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , keylen , nodesize ) ; free ( node ) ; return 1 ; } retval = a_cb ( hfs , HFS_BT_NODE_TYPE_IDX , key , cur_off + rec_off , ptr ) ; if ( retval == HFS_BTREE_CB_ERR ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Callback<S2SV_blank>returned<S2SV_blank>error\" ) ; free ( node ) ; return 1 ; } else if ( ( retval == HFS_BTREE_CB_IDX_LT ) || ( next_node == 0 ) ) { hfs_btree_index_record * idx_rec ; int keylen = 2 + hfs_get_idxkeylen ( hfs , tsk_getu16 ( fs -> endian , key -> key_len ) , & ( hfs -> catalog_header ) ) ; if ( rec_off + keylen > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>and<S2SV_blank>keylength<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off + keylen , nodesize ) ; free ( node ) ; return 1 ; } idx_rec = ( hfs_btree_index_record * ) & node [ rec_off + keylen ] ; next_node = tsk_getu32 ( fs -> endian , idx_rec -> childNode ) ; } if ( retval == HFS_BTREE_CB_IDX_EQGT ) { break ; } } if ( next_node == 0 ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>any<S2SV_blank>keys<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d\" , cur_node ) ; is_done = 1 ; break ; } if ( next_node == cur_node ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>references<S2SV_blank>itself<S2SV_blank>as<S2SV_blank>next<S2SV_blank>node\" , cur_node ) ; is_done = 1 ; break ; } cur_node = next_node ; } else if ( node_desc -> type == HFS_BT_NODE_TYPE_LEAF ) { int rec ; for ( rec = 0 ; rec < num_rec ; ++ rec ) { size_t rec_off ; hfs_btree_key_cat * key ; uint8_t retval ; <S2SV_StartBug> uint16_t keylen ; <S2SV_EndBug> rec_off = tsk_getu16 ( fs -> endian , & node [ nodesize - ( rec + 1 ) * 2 ] ) ; if ( rec_off > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>leaf<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off , nodesize ) ; free ( node ) ; return 1 ; } key = ( hfs_btree_key_cat * ) & node [ rec_off ] ; keylen = 2 + tsk_getu16 ( hfs -> fs_info . endian , key -> key_len ) ; if ( ( keylen ) > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>leaf<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , keylen , nodesize ) ; free ( node ) ; return 1 ; } retval = a_cb ( hfs , HFS_BT_NODE_TYPE_LEAF , key , cur_off + rec_off , ptr ) ; if ( retval == HFS_BTREE_CB_LEAF_STOP ) { is_done = 1 ; break ; } else if ( retval == HFS_BTREE_CB_ERR ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Callback<S2SV_blank>returned<S2SV_blank>error\" ) ; free ( node ) ; return 1 ; } } if ( is_done == 0 ) { cur_node = tsk_getu32 ( fs -> endian , node_desc -> flink ) ; if ( cur_node == 0 ) { is_done = 1 ; } if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>moving<S2SV_blank>forward<S2SV_blank>to<S2SV_blank>next<S2SV_blank>leaf\" ) ; } } else { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>btree<S2SV_blank>node<S2SV_blank>%\" PRIu32 \"<S2SV_blank>(%\" PRIu64 \")<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>index<S2SV_blank>nor<S2SV_blank>leaf<S2SV_blank>(%\" PRIu8 \")\" , cur_node , cur_off , node_desc -> type ) ; free ( node ) ; return 1 ; } } free ( node ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8_t retval ; int <S2SV_ModEnd> keylen ; rec_off <S2SV_ModStart> uint8_t retval ; int <S2SV_ModEnd> keylen ; rec_off\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13135\n\n```\nCWE-20 static Image * ReadCUTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowCUTReaderException ( severity , tag ) { if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( severity , tag ) ; } <S2SV_EndBug> Image * image , * palette ; ImageInfo * clone_info ; MagickBooleanType status ; MagickOffsetType offset ; size_t EncodedByte ; unsigned char RunCount , RunValue , RunCountMasked ; CUTHeader Header ; CUTPalHeader PalHeader ; ssize_t depth ; ssize_t i , j ; ssize_t ldblk ; unsigned char * BImgBuff = NULL , * ptrB ; register Quantum * q ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } palette = NULL ; clone_info = NULL ; Header . Width = ReadBlobLSBShort ( image ) ; Header . Height = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . Width == 0 || Header . Height == 0 || Header . Reserved != 0 ) CUT_KO : ThrowCUTReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; EncodedByte = ReadBlobLSBShort ( image ) ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; ldblk = 0 ; while ( ( int ) RunCountMasked != 0 ) { i = 1 ; if ( ( int ) RunCount < 0x80 ) i = ( ssize_t ) RunCountMasked ; offset = SeekBlob ( image , TellBlob ( image ) + i , SEEK_SET ) ; if ( offset < 0 ) ThrowCUTReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; EncodedByte -= i + 1 ; ldblk += ( ssize_t ) RunCountMasked ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; RunCountMasked = RunCount & 0x7F ; } if ( EncodedByte != 1 ) goto CUT_KO ; i = 0 ; if ( ldblk == ( int ) Header . Width ) i = 8 ; if ( 2 * ldblk == ( int ) Header . Width ) i = 4 ; if ( 8 * ldblk == ( int ) Header . Width ) i = 1 ; if ( i == 0 ) goto CUT_KO ; depth = i ; image -> columns = Header . Width ; image -> rows = Header . Height ; image -> depth = 8 ; image -> colors = ( size_t ) ( GetQuantumRange ( 1UL * i ) + 1 ) ; if ( image_info -> ping != MagickFalse ) goto Finish ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( clone_info = CloneImageInfo ( image_info ) ) == NULL ) goto NoPalette ; i = ( ssize_t ) strlen ( clone_info -> filename ) ; j = i ; while ( -- i > 0 ) { if ( clone_info -> filename [ i ] == '.' ) { break ; } if ( clone_info -> filename [ i ] == '/' || clone_info -> filename [ i ] == '\\\\\\\\' || clone_info -> filename [ i ] == ':' ) { i = j ; break ; } } ( void ) CopyMagickString ( clone_info -> filename + i , \".PAL\" , ( size_t ) ( MagickPathExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { ( void ) CopyMagickString ( clone_info -> filename + i , \".pal\" , ( size_t ) ( MagickPathExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info -> filename [ i ] = '\\\\0' ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info = DestroyImageInfo ( clone_info ) ; clone_info = NULL ; goto NoPalette ; } } } if ( ( palette = AcquireImage ( clone_info , exception ) ) == NULL ) goto NoPalette ; status = OpenBlob ( clone_info , palette , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { ErasePalette : palette = DestroyImage ( palette ) ; palette = NULL ; goto NoPalette ; } if ( palette != NULL ) { ( void ) ReadBlob ( palette , 2 , ( unsigned char * ) PalHeader . FileId ) ; if ( strncmp ( PalHeader . FileId , \"AH\" , 2 ) != 0 ) goto ErasePalette ; PalHeader . Version = ReadBlobLSBShort ( palette ) ; PalHeader . Size = ReadBlobLSBShort ( palette ) ; PalHeader . FileType = ( char ) ReadBlobByte ( palette ) ; PalHeader . SubType = ( char ) ReadBlobByte ( palette ) ; PalHeader . BoardID = ReadBlobLSBShort ( palette ) ; PalHeader . GraphicsMode = ReadBlobLSBShort ( palette ) ; PalHeader . MaxIndex = ReadBlobLSBShort ( palette ) ; PalHeader . MaxRed = ReadBlobLSBShort ( palette ) ; PalHeader . MaxGreen = ReadBlobLSBShort ( palette ) ; PalHeader . MaxBlue = ReadBlobLSBShort ( palette ) ; ( void ) ReadBlob ( palette , 20 , ( unsigned char * ) PalHeader . PaletteId ) ; if ( EOFBlob ( image ) ) ThrowCUTReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; if ( PalHeader . MaxIndex < 1 ) goto ErasePalette ; image -> colors = PalHeader . MaxIndex + 1 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) goto NoMemory ; if ( PalHeader . MaxRed == 0 ) PalHeader . MaxRed = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxGreen == 0 ) PalHeader . MaxGreen = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxBlue == 0 ) PalHeader . MaxBlue = ( unsigned int ) QuantumRange ; for ( i = 0 ; i <= ( int ) PalHeader . MaxIndex ; i ++ ) { j = ( ssize_t ) TellBlob ( palette ) ; if ( ( j % 512 ) > 512 - 6 ) { j = ( ( j / 512 ) + 1 ) * 512 ; offset = SeekBlob ( palette , j , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } image -> colormap [ i ] . red = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxRed ) { image -> colormap [ i ] . red = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . red * QuantumRange + ( PalHeader . MaxRed >> 1 ) ) / PalHeader . MaxRed ) ; } image -> colormap [ i ] . green = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxGreen ) { image -> colormap [ i ] . green = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . green * QuantumRange + ( PalHeader . MaxGreen >> 1 ) ) / PalHeader . MaxGreen ) ; } image -> colormap [ i ] . blue = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxBlue ) { image -> colormap [ i ] . blue = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . blue * QuantumRange + ( PalHeader . MaxBlue >> 1 ) ) / PalHeader . MaxBlue ) ; } } if ( EOFBlob ( image ) ) ThrowCUTReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } NoPalette : if ( palette == NULL ) { image -> colors = 256 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) { NoMemory : ThrowCUTReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) i ) ; } } BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == NULL ) goto NoMemory ; <S2SV_StartBug> offset = SeekBlob ( image , 6 , SEEK_SET ) ; <S2SV_EndBug> if ( offset < 0 ) { if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } for ( i = 0 ; i < ( int ) Header . Height ; i ++ ) { EncodedByte = ReadBlobLSBShort ( image ) ; ptrB = BImgBuff ; j = ldblk ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; while ( ( int ) RunCountMasked != 0 ) { if ( ( ssize_t ) RunCountMasked > j ) { RunCountMasked = ( unsigned char ) j ; if ( j == 0 ) { break ; } } if ( ( int ) RunCount > 0x80 ) { RunValue = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) memset ( ptrB , ( int ) RunValue , ( size_t ) RunCountMasked ) ; } else { ( void ) ReadBlob ( image , ( size_t ) RunCountMasked , ptrB ) ; } ptrB += ( int ) RunCountMasked ; j -= ( int ) RunCountMasked ; if ( EOFBlob ( image ) != MagickFalse ) goto Finish ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; } InsertRow ( image , depth , BImgBuff , i , exception ) ; } ( void ) SyncImage ( image , exception ) ; if ( palette == NULL ) { if ( ( image -> storage_class == PseudoClass ) && ( SetImageGray ( image , exception ) != MagickFalse ) ) { if ( GetCutColors ( image , exception ) == 2 ) { for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { register Quantum sample ; sample = ScaleCharToQuantum ( ( unsigned char ) i ) ; if ( image -> colormap [ i ] . red != sample ) goto Finish ; if ( image -> colormap [ i ] . green != sample ) goto Finish ; if ( image -> colormap [ i ] . blue != sample ) goto Finish ; } image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { q = QueueAuthenticPixels ( image , 0 , i , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) { if ( GetPixelRed ( image , q ) == ScaleCharToQuantum ( 1 ) ) { SetPixelRed ( image , QuantumRange , q ) ; SetPixelGreen ( image , QuantumRange , q ) ; SetPixelBlue ( image , QuantumRange , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) goto Finish ; } } } } Finish : if ( BImgBuff != NULL ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , tag ) \\\\\\n{ <S2SV_ModEnd> if ( palette <S2SV_ModStart> tag ) ; \\\\\\n} <S2SV_ModEnd> Image * image <S2SV_ModStart> goto NoMemory ; ( void ) memset ( BImgBuff , 0 , ( size_t ) ldblk * sizeof ( * BImgBuff ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static int unmap_ref_private ( struct mm_struct * mm , struct vm_area_struct * vma , struct page * page , unsigned long address ) { struct hstate * h = hstate_vma ( vma ) ; struct vm_area_struct * iter_vma ; struct address_space * mapping ; struct prio_tree_iter iter ; pgoff_t pgoff ; address = address & huge_page_mask ( h ) ; pgoff = vma_hugecache_offset ( h , vma , address ) ; <S2SV_StartBug> mapping = ( struct address_space * ) page_private ( page ) ; <S2SV_EndBug> mutex_lock ( & mapping -> i_mmap_mutex ) ; vma_prio_tree_foreach ( iter_vma , & iter , & mapping -> i_mmap , pgoff , pgoff ) { if ( iter_vma == vma ) continue ; if ( ! is_vma_resv_set ( iter_vma , HPAGE_RESV_OWNER ) ) __unmap_hugepage_range ( iter_vma , address , address + huge_page_size ( h ) , page ) ; } mutex_unlock ( & mapping -> i_mmap_mutex ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; mapping = vma -> vm_file -> f_dentry -> d_inode -> i_mapping <S2SV_ModEnd> ; mutex_lock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 <S2SV_StartBug> NOEXPORT char * parse_global_option ( CMD cmd , char * opt , char * arg ) { <S2SV_EndBug> void * tmp ; if ( cmd == CMD_PRINT_DEFAULTS || cmd == CMD_PRINT_HELP ) { s_log ( LOG_NOTICE , \"<S2SV_blank>\" ) ; s_log ( LOG_NOTICE , \"Global<S2SV_blank>options:\" ) ; } # ifdef HAVE_CHROOT switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . chroot_dir = NULL ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : <S2SV_StartBug> tmp = global_options . chroot_dir ; <S2SV_EndBug> global_options . chroot_dir = NULL ; str_free ( tmp ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"chroot\" ) ) break ; <S2SV_StartBug> new_global_options . chroot_dir = str_dup ( arg ) ; <S2SV_EndBug> return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>chroot<S2SV_blank>stunnel<S2SV_blank>process\" , \"chroot\" ) ; break ; } # endif # ifndef OPENSSL_NO_COMP switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . compression = COMP_NONE ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"compression\" ) ) break ; # if OPENSSL_VERSION_NUMBER < 0x10100000L if ( OpenSSL_version_num ( ) < 0x00908051L ) return \"Compression<S2SV_blank>unsupported<S2SV_blank>due<S2SV_blank>to<S2SV_blank>a<S2SV_blank>memory<S2SV_blank>leak\" ; # endif if ( ! strcasecmp ( arg , \"deflate\" ) ) <S2SV_StartBug> new_global_options . compression = COMP_DEFLATE ; <S2SV_EndBug> else if ( ! strcasecmp ( arg , \"zlib\" ) ) <S2SV_StartBug> new_global_options . compression = COMP_ZLIB ; <S2SV_EndBug> else return \"Specified<S2SV_blank>compression<S2SV_blank>type<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>compression<S2SV_blank>type\" , \"compression\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : # ifdef EGD_SOCKET <S2SV_StartBug> new_global_options . egd_sock = EGD_SOCKET ; <S2SV_EndBug> # else <S2SV_StartBug> new_global_options . egd_sock = NULL ; <S2SV_EndBug> # endif break ; case CMD_SET_COPY : break ; case CMD_FREE : <S2SV_StartBug> tmp = global_options . egd_sock ; <S2SV_EndBug> global_options . egd_sock = NULL ; str_free ( tmp ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"EGD\" ) ) break ; <S2SV_StartBug> new_global_options . egd_sock = str_dup ( arg ) ; <S2SV_EndBug> return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : # ifdef EGD_SOCKET s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"EGD\" , EGD_SOCKET ) ; # endif break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>path<S2SV_blank>to<S2SV_blank>Entropy<S2SV_blank>Gathering<S2SV_blank>Daemon<S2SV_blank>socket\" , \"EGD\" ) ; break ; } # ifndef OPENSSL_NO_ENGINE switch ( cmd ) { case CMD_SET_DEFAULTS : engine_reset_list ( ) ; break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"engine\" ) ) break ; if ( ! strcasecmp ( arg , \"auto\" ) ) return engine_auto ( ) ; else return engine_open ( arg ) ; case CMD_INITIALIZE : engine_init ( ) ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>auto|engine_id\" , \"engine\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"engineCtrl\" ) ) break ; { char * tmp_str = strchr ( arg , ':' ) ; if ( tmp_str ) * tmp_str ++ = '\\\\0' ; return engine_ctrl ( arg , tmp_str ) ; } case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>cmd[:arg]\" , \"engineCtrl\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"engineDefault\" ) ) break ; return engine_default ( arg ) ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>TASK_LIST\" , \"engineDefault\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : # ifdef USE_FIPS <S2SV_StartBug> new_global_options . option . fips = 0 ; <S2SV_EndBug> # endif break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"fips\" ) ) <S2SV_StartBug> break ; <S2SV_EndBug> # ifdef USE_FIPS <S2SV_StartBug> if ( ! strcasecmp ( arg , \"yes\" ) ) <S2SV_EndBug> new_global_options . option . fips = 1 ; <S2SV_StartBug> else if ( ! strcasecmp ( arg , \"no\" ) ) <S2SV_EndBug> <S2SV_StartBug> new_global_options . option . fips = 0 ; <S2SV_EndBug> <S2SV_StartBug> else <S2SV_EndBug> return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; <S2SV_StartBug> # else <S2SV_EndBug> if ( strcasecmp ( arg , \"no\" ) ) return \"FIPS<S2SV_blank>support<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available\" ; # endif return NULL ; case CMD_INITIALIZE : break ; <S2SV_StartBug> case CMD_PRINT_DEFAULTS : <S2SV_EndBug> break ; case CMD_PRINT_HELP : # ifdef USE_FIPS <S2SV_StartBug> s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>FIPS<S2SV_blank>140-2<S2SV_blank>mode\" , <S2SV_EndBug> \"fips\" ) ; # endif break ; } # ifndef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . option . foreground = 0 ; <S2SV_EndBug> <S2SV_StartBug> new_global_options . option . log_stderr = 0 ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"foreground\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) { <S2SV_StartBug> new_global_options . option . foreground = 1 ; <S2SV_EndBug> <S2SV_StartBug> new_global_options . option . log_stderr = 1 ; <S2SV_EndBug> } else if ( ! strcasecmp ( arg , \"quiet\" ) ) { <S2SV_StartBug> new_global_options . option . foreground = 1 ; <S2SV_EndBug> <S2SV_StartBug> new_global_options . option . log_stderr = 0 ; <S2SV_EndBug> } else if ( ! strcasecmp ( arg , \"no\" ) ) { <S2SV_StartBug> new_global_options . option . foreground = 0 ; <S2SV_EndBug> <S2SV_StartBug> new_global_options . option . log_stderr = 0 ; <S2SV_EndBug> } else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\',<S2SV_blank>\\'quiet\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|quiet|no<S2SV_blank>foreground<S2SV_blank>mode<S2SV_blank>(don\\'t<S2SV_blank>fork,<S2SV_blank>log<S2SV_blank>to<S2SV_blank>stderr)\" , \"foreground\" ) ; break ; } # endif # ifdef ICON_IMAGE switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . icon [ ICON_ACTIVE ] = load_icon_default ( ICON_ACTIVE ) ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"iconActive\" ) ) break ; <S2SV_StartBug> if ( ! ( new_global_options . icon [ ICON_ACTIVE ] = load_icon_file ( arg ) ) ) <S2SV_EndBug> return \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>icon\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>icon<S2SV_blank>when<S2SV_blank>connections<S2SV_blank>are<S2SV_blank>established\" , \"iconActive\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . icon [ ICON_ERROR ] = load_icon_default ( ICON_ERROR ) ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"iconError\" ) ) break ; <S2SV_StartBug> if ( ! ( new_global_options . icon [ ICON_ERROR ] = load_icon_file ( arg ) ) ) <S2SV_EndBug> return \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>icon\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>icon<S2SV_blank>for<S2SV_blank>invalid<S2SV_blank>configuration<S2SV_blank>file\" , \"iconError\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . icon [ ICON_IDLE ] = load_icon_default ( ICON_IDLE ) ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"iconIdle\" ) ) break ; <S2SV_StartBug> if ( ! ( new_global_options . icon [ ICON_IDLE ] = load_icon_file ( arg ) ) ) <S2SV_EndBug> return \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>icon\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>icon<S2SV_blank>when<S2SV_blank>no<S2SV_blank>connections<S2SV_blank>were<S2SV_blank>established\" , \"iconIdle\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . log_file_mode = FILE_MODE_APPEND ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"log\" ) ) break ; if ( ! strcasecmp ( arg , \"append\" ) ) <S2SV_StartBug> new_global_options . log_file_mode = FILE_MODE_APPEND ; <S2SV_EndBug> else if ( ! strcasecmp ( arg , \"overwrite\" ) ) <S2SV_StartBug> new_global_options . log_file_mode = FILE_MODE_OVERWRITE ; <S2SV_EndBug> else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'append\\'<S2SV_blank>or<S2SV_blank>\\'overwrite\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>append|overwrite<S2SV_blank>log<S2SV_blank>file\" , \"log\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . output_file = NULL ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : <S2SV_StartBug> tmp = global_options . output_file ; <S2SV_EndBug> global_options . output_file = NULL ; str_free ( tmp ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"output\" ) ) break ; <S2SV_StartBug> new_global_options . output_file = str_dup ( arg ) ; <S2SV_EndBug> return NULL ; case CMD_INITIALIZE : # ifndef USE_WIN32 <S2SV_StartBug> if ( ! new_global_options . option . foreground && <S2SV_EndBug> <S2SV_StartBug> new_global_options . output_file && <S2SV_EndBug> new_global_options . output_file [ 0 ] != '/' ) return \"Log<S2SV_blank>file<S2SV_blank>must<S2SV_blank>include<S2SV_blank>full<S2SV_blank>path<S2SV_blank>name\" ; # endif break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>file<S2SV_blank>to<S2SV_blank>append<S2SV_blank>log<S2SV_blank>messages\" , \"output\" ) ; break ; } # ifndef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . pidfile = NULL ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : <S2SV_StartBug> tmp = global_options . pidfile ; <S2SV_EndBug> global_options . pidfile = NULL ; str_free ( tmp ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"pid\" ) ) break ; if ( arg [ 0 ] ) <S2SV_StartBug> new_global_options . pidfile = str_dup ( arg ) ; <S2SV_EndBug> else <S2SV_StartBug> new_global_options . pidfile = NULL ; <S2SV_EndBug> return NULL ; case CMD_INITIALIZE : <S2SV_StartBug> if ( ! new_global_options . option . foreground && <S2SV_EndBug> <S2SV_StartBug> new_global_options . pidfile && <S2SV_EndBug> new_global_options . pidfile [ 0 ] != '/' ) return \"Pid<S2SV_blank>file<S2SV_blank>must<S2SV_blank>include<S2SV_blank>full<S2SV_blank>path<S2SV_blank>name\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>pid<S2SV_blank>file\" , \"pid\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . random_bytes = RANDOM_BYTES ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"RNDbytes\" ) ) break ; { char * tmp_str ; <S2SV_StartBug> new_global_options . random_bytes = ( long ) strtol ( arg , & tmp_str , 10 ) ; <S2SV_EndBug> if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>number<S2SV_blank>of<S2SV_blank>bytes<S2SV_blank>to<S2SV_blank>read<S2SV_blank>from<S2SV_blank>random<S2SV_blank>seed<S2SV_blank>files\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%d\" , \"RNDbytes\" , RANDOM_BYTES ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>bytes<S2SV_blank>to<S2SV_blank>read<S2SV_blank>from<S2SV_blank>random<S2SV_blank>seed<S2SV_blank>files\" , \"RNDbytes\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : # ifdef RANDOM_FILE <S2SV_StartBug> new_global_options . rand_file = str_dup ( RANDOM_FILE ) ; <S2SV_EndBug> # else <S2SV_StartBug> new_global_options . rand_file = NULL ; <S2SV_EndBug> # endif break ; case CMD_SET_COPY : break ; case CMD_FREE : <S2SV_StartBug> tmp = global_options . rand_file ; <S2SV_EndBug> global_options . rand_file = NULL ; str_free ( tmp ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"RNDfile\" ) ) break ; <S2SV_StartBug> new_global_options . rand_file = str_dup ( arg ) ; <S2SV_EndBug> return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : # ifdef RANDOM_FILE s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"RNDfile\" , RANDOM_FILE ) ; # endif break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>path<S2SV_blank>to<S2SV_blank>file<S2SV_blank>with<S2SV_blank>random<S2SV_blank>seed<S2SV_blank>data\" , \"RNDfile\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . option . rand_write = 1 ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"RNDoverwrite\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) <S2SV_StartBug> new_global_options . option . rand_write = 1 ; <S2SV_EndBug> else if ( ! strcasecmp ( arg , \"no\" ) ) <S2SV_StartBug> new_global_options . option . rand_write = 0 ; <S2SV_EndBug> else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes\" , \"RNDoverwrite\" ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>overwrite<S2SV_blank>seed<S2SV_blank>datafiles<S2SV_blank>with<S2SV_blank>new<S2SV_blank>random<S2SV_blank>data\" , \"RNDoverwrite\" ) ; break ; } # ifndef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . option . log_syslog = 1 ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"syslog\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) <S2SV_StartBug> new_global_options . option . log_syslog = 1 ; <S2SV_EndBug> else if ( ! strcasecmp ( arg , \"no\" ) ) <S2SV_StartBug> new_global_options . option . log_syslog = 0 ; <S2SV_EndBug> else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>send<S2SV_blank>logging<S2SV_blank>messages<S2SV_blank>to<S2SV_blank>syslog\" , \"syslog\" ) ; break ; } # endif # ifdef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : <S2SV_StartBug> new_global_options . option . taskbar = 1 ; <S2SV_EndBug> break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"taskbar\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) <S2SV_StartBug> new_global_options . option . taskbar = 1 ; <S2SV_EndBug> else if ( ! strcasecmp ( arg , \"no\" ) ) <S2SV_StartBug> new_global_options . option . taskbar = 0 ; <S2SV_EndBug> else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes\" , \"taskbar\" ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>enable<S2SV_blank>the<S2SV_blank>taskbar<S2SV_blank>icon\" , \"taskbar\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : break ; case CMD_SET_COPY : break ; case CMD_FREE : <S2SV_StartBug> break ; <S2SV_EndBug> case CMD_SET_VALUE : return option_not_found ; case CMD_INITIALIZE : <S2SV_StartBug> if ( ssl_configure ( & new_global_options ) ) <S2SV_EndBug> return \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>TLS\" ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : break ; } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( CMD cmd , GLOBAL_OPTIONS * options <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> chroot_dir = NULL <S2SV_ModStart> : tmp = options -> chroot_dir ; options -> <S2SV_ModEnd> chroot_dir = NULL <S2SV_ModStart> ) break ; options -> <S2SV_ModEnd> chroot_dir = str_dup <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> compression = COMP_NONE <S2SV_ModStart> \"deflate\" ) ) options -> <S2SV_ModEnd> compression = COMP_DEFLATE <S2SV_ModStart> \"zlib\" ) ) options -> <S2SV_ModEnd> compression = COMP_ZLIB <S2SV_ModStart> # ifdef EGD_SOCKET options -> <S2SV_ModEnd> egd_sock = EGD_SOCKET <S2SV_ModStart> ; # else options -> <S2SV_ModEnd> egd_sock = NULL <S2SV_ModStart> : tmp = options -> egd_sock ; options -> <S2SV_ModEnd> egd_sock = NULL <S2SV_ModStart> ) break ; options -> <S2SV_ModEnd> egd_sock = str_dup <S2SV_ModStart> # ifdef USE_FIPS options -> <S2SV_ModEnd> option . fips <S2SV_ModStart> . fips = FIPS_mode ( ) ? 1 : <S2SV_ModStart> ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) { <S2SV_ModStart> # ifdef USE_FIPS options -> <S2SV_ModEnd> option . fips <S2SV_ModStart> = 1 ; # else return \"FIPS<S2SV_blank>support<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available\" ; # endif } else <S2SV_ModEnd> if ( ! <S2SV_ModStart> \"no\" ) ) { # ifdef USE_FIPS if ( FIPS_mode ( ) ) return \"Failed<S2SV_blank>to<S2SV_blank>override<S2SV_blank>system-wide<S2SV_blank>FIPS<S2SV_blank>mode\" ; options -> <S2SV_ModEnd> option . fips <S2SV_ModStart> = 0 ; # endif } else { <S2SV_ModEnd> return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; <S2SV_ModStart> return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; } <S2SV_ModEnd> return NULL ; <S2SV_ModStart> ; case CMD_PRINT_DEFAULTS <S2SV_ModEnd> : # ifdef <S2SV_ModStart> ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"fips\" , FIPS_mode ( ) ? \"yes\" : \"no\" ) ; # endif break ; case CMD_PRINT_HELP : # ifdef USE_FIPS s_log ( LOG_NOTICE , <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> option . foreground <S2SV_ModStart> = 0 ; options -> <S2SV_ModEnd> option . log_stderr <S2SV_ModStart> ) ) { options -> <S2SV_ModEnd> option . foreground <S2SV_ModStart> = 1 ; options -> <S2SV_ModEnd> option . log_stderr <S2SV_ModStart> ) ) { options -> <S2SV_ModEnd> option . foreground <S2SV_ModStart> = 1 ; options -> <S2SV_ModEnd> option . log_stderr <S2SV_ModStart> ) ) { options -> <S2SV_ModEnd> option . foreground <S2SV_ModStart> = 0 ; options -> <S2SV_ModEnd> option . log_stderr <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> icon [ ICON_ACTIVE <S2SV_ModStart> ( ! ( options -> <S2SV_ModEnd> icon [ ICON_ACTIVE <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> icon [ ICON_ERROR <S2SV_ModStart> ( ! ( options -> <S2SV_ModEnd> icon [ ICON_ERROR <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> icon [ ICON_IDLE <S2SV_ModStart> ( ! ( options -> <S2SV_ModEnd> icon [ ICON_IDLE <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> log_file_mode = FILE_MODE_APPEND <S2SV_ModStart> \"append\" ) ) options -> <S2SV_ModEnd> log_file_mode = FILE_MODE_APPEND <S2SV_ModStart> \"overwrite\" ) ) options -> <S2SV_ModEnd> log_file_mode = FILE_MODE_OVERWRITE <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> output_file = NULL <S2SV_ModStart> : tmp = options -> output_file ; options -> <S2SV_ModEnd> output_file = NULL <S2SV_ModStart> ) break ; options -> <S2SV_ModEnd> output_file = str_dup <S2SV_ModStart> if ( ! options -> <S2SV_ModEnd> option . foreground <S2SV_ModStart> . foreground && options -> output_file && options -> <S2SV_ModEnd> output_file [ 0 <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> pidfile = NULL <S2SV_ModStart> : tmp = options -> pidfile ; options -> <S2SV_ModEnd> pidfile = NULL <S2SV_ModStart> 0 ] ) options -> <S2SV_ModEnd> pidfile = str_dup <S2SV_ModStart> ) ; else options -> <S2SV_ModEnd> pidfile = NULL <S2SV_ModStart> if ( ! options -> <S2SV_ModEnd> option . foreground <S2SV_ModStart> . foreground && options -> pidfile && options -> <S2SV_ModEnd> pidfile [ 0 <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> random_bytes = RANDOM_BYTES <S2SV_ModStart> * tmp_str ; options -> <S2SV_ModEnd> random_bytes = ( <S2SV_ModStart> # ifdef RANDOM_FILE options -> <S2SV_ModEnd> rand_file = str_dup <S2SV_ModStart> ; # else options -> <S2SV_ModEnd> rand_file = NULL <S2SV_ModStart> : tmp = options -> rand_file ; options -> <S2SV_ModEnd> rand_file = NULL <S2SV_ModStart> ) break ; options -> <S2SV_ModEnd> rand_file = str_dup <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> option . rand_write <S2SV_ModStart> \"yes\" ) ) options -> <S2SV_ModEnd> option . rand_write <S2SV_ModStart> \"no\" ) ) options -> <S2SV_ModEnd> option . rand_write <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> option . log_syslog <S2SV_ModStart> \"yes\" ) ) options -> <S2SV_ModEnd> option . log_syslog <S2SV_ModStart> \"no\" ) ) options -> <S2SV_ModEnd> option . log_syslog <S2SV_ModStart> case CMD_SET_DEFAULTS : options -> <S2SV_ModEnd> option . taskbar <S2SV_ModStart> \"yes\" ) ) options -> <S2SV_ModEnd> option . taskbar <S2SV_ModStart> \"no\" ) ) options -> <S2SV_ModEnd> option . taskbar <S2SV_ModStart> case CMD_FREE : memset ( options , 0 , sizeof ( GLOBAL_OPTIONS ) ) ; <S2SV_ModStart> ( ssl_configure ( options <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1331\n\n```\nCWE-59 static char * lxclock_name ( const char * p , const char * n ) { int ret ; int len ; char * dest ; char * rundir ; <S2SV_StartBug> len = strlen ( \"/lock/lxc/\" ) + strlen ( n ) + strlen ( p ) + 3 ; <S2SV_EndBug> rundir = get_rundir ( ) ; if ( ! rundir ) return NULL ; len += strlen ( rundir ) ; if ( ( dest = malloc ( len ) ) == NULL ) { free ( rundir ) ; return NULL ; } <S2SV_StartBug> ret = snprintf ( dest , len , \"%s/lock/lxc/%s\" , rundir , p ) ; <S2SV_EndBug> if ( ret < 0 || ret >= len ) { free ( dest ) ; free ( rundir ) ; return NULL ; } ret = mkdir_p ( dest , 0755 ) ; if ( ret < 0 ) { <S2SV_StartBug> int l2 = 22 + strlen ( n ) + strlen ( p ) ; <S2SV_EndBug> if ( l2 > len ) { char * d ; d = realloc ( dest , l2 ) ; if ( ! d ) { free ( dest ) ; free ( rundir ) ; return NULL ; } len = l2 ; dest = d ; } ret = snprintf ( dest , len , \"/tmp/%d/lxc%s\" , geteuid ( ) , p ) ; if ( ret < 0 || ret >= len ) { free ( dest ) ; <S2SV_StartBug> free ( rundir ) ; <S2SV_EndBug> return NULL ; } ret = mkdir_p ( dest , 0755 ) ; if ( ret < 0 ) { free ( dest ) ; free ( rundir ) ; return NULL ; } ret = snprintf ( dest , len , \"/tmp/%d/lxc%s/.%s\" , geteuid ( ) , p , n ) ; } else ret = snprintf ( dest , len , \"%s/lock/lxc/%s/.%s\" , rundir , p , n ) ; free ( rundir ) ; if ( ret < 0 || ret >= len ) { free ( dest ) ; return NULL ; } return dest ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = strlen ( \"/lxc/lock/\" <S2SV_ModEnd> ) + strlen <S2SV_ModStart> , len , \"%s/lxc/lock/%s\" <S2SV_ModEnd> , rundir , <S2SV_ModStart> 0 ) { free ( dest ) ; free ( rundir ) ; return NULL ; } ret = snprintf ( dest , len , \"%s/lxc/lock/%s/.%s\" , rundir , p , n ) ; free ( rundir <S2SV_ModEnd> ) ; if <S2SV_ModStart> dest ) ; <S2SV_ModEnd> return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28374\n\n```\nCWE-22 static int target_xcopy_locate_se_dev_e4_iter ( struct se_device * se_dev , <S2SV_StartBug> void * data ) <S2SV_EndBug> { struct xcopy_dev_search_info * info = data ; unsigned char tmp_dev_wwn [ XCOPY_NAA_IEEE_REGEX_LEN ] ; int rc ; <S2SV_StartBug> if ( ! se_dev -> dev_attrib . emulate_3pc ) <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> memset ( & tmp_dev_wwn [ 0 ] , 0 , XCOPY_NAA_IEEE_REGEX_LEN ) ; target_xcopy_gen_naa_ieee ( se_dev , & tmp_dev_wwn [ 0 ] ) ; <S2SV_StartBug> rc = memcmp ( & tmp_dev_wwn [ 0 ] , info -> dev_wwn , XCOPY_NAA_IEEE_REGEX_LEN ) ; <S2SV_EndBug> <S2SV_StartBug> if ( rc != 0 ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> info -> found_dev = se_dev ; <S2SV_EndBug> pr_debug ( \"XCOPY<S2SV_blank>0xe4:<S2SV_blank>located<S2SV_blank>se_dev:<S2SV_blank>%p\\\\n\" , se_dev ) ; <S2SV_StartBug> rc = target_depend_item ( & se_dev -> dev_group . cg_item ) ; <S2SV_EndBug> if ( rc != 0 ) { pr_err ( \"configfs_depend_item<S2SV_blank>attempt<S2SV_blank>failed:<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>se_dev:<S2SV_blank>%p\\\\n\" , rc , se_dev ) ; return rc ; } pr_debug ( \"Called<S2SV_blank>configfs_depend_item<S2SV_blank>for<S2SV_blank>se_dev:<S2SV_blank>%p<S2SV_blank>se_dev->se_dev_group:<S2SV_blank>%p\\\\n\" , se_dev , & se_dev -> dev_group ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * se_dev , const unsigned char * dev_wwn ) { <S2SV_ModEnd> unsigned char tmp_dev_wwn <S2SV_ModStart> . emulate_3pc ) { pr_debug ( \"XCOPY:<S2SV_blank>emulate_3pc<S2SV_blank>disabled<S2SV_blank>on<S2SV_blank>se_dev<S2SV_blank>%p\\\\n\" , se_dev ) ; <S2SV_ModStart> return 0 ; } <S2SV_ModStart> 0 ] , <S2SV_ModEnd> dev_wwn , XCOPY_NAA_IEEE_REGEX_LEN <S2SV_ModStart> != 0 ) { pr_debug ( \"XCOPY:<S2SV_blank>skip<S2SV_blank>non-matching:<S2SV_blank>%*ph\\\\n\" , XCOPY_NAA_IEEE_REGEX_LEN , tmp_dev_wwn ) ; <S2SV_ModStart> return 0 ; } <S2SV_ModEnd> pr_debug ( \"XCOPY<S2SV_blank>0xe4:<S2SV_blank>located<S2SV_blank>se_dev:<S2SV_blank>%p\\\\n\" <S2SV_ModStart> se_dev ) ; <S2SV_ModEnd> return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19067\n\n```\nCWE-401 static int acp_hw_init ( void * handle ) { int r , i ; uint64_t acp_base ; u32 val = 0 ; u32 count = 0 ; struct device * dev ; <S2SV_StartBug> struct i2s_platform_data * i2s_pdata ; <S2SV_EndBug> struct amdgpu_device * adev = ( struct amdgpu_device * ) handle ; const struct amdgpu_ip_block * ip_block = amdgpu_device_ip_get_ip_block ( adev , AMD_IP_BLOCK_TYPE_ACP ) ; if ( ! ip_block ) return - EINVAL ; r = amd_acp_hw_init ( adev -> acp . cgs_device , ip_block -> version -> major , ip_block -> version -> minor ) ; if ( r == - ENODEV ) { amdgpu_dpm_set_powergating_by_smu ( adev , AMD_IP_BLOCK_TYPE_ACP , true ) ; return 0 ; } else if ( r ) { return r ; } if ( adev -> rmmio_size == 0 || adev -> rmmio_size < 0x5289 ) return - EINVAL ; acp_base = adev -> rmmio_base ; adev -> acp . acp_genpd = kzalloc ( sizeof ( struct acp_pm_domain ) , GFP_KERNEL ) ; if ( adev -> acp . acp_genpd == NULL ) return - ENOMEM ; adev -> acp . acp_genpd -> gpd . name = \"ACP_AUDIO\" ; adev -> acp . acp_genpd -> gpd . power_off = acp_poweroff ; adev -> acp . acp_genpd -> gpd . power_on = acp_poweron ; adev -> acp . acp_genpd -> adev = adev ; pm_genpd_init ( & adev -> acp . acp_genpd -> gpd , NULL , false ) ; adev -> acp . acp_cell = kcalloc ( ACP_DEVS , sizeof ( struct mfd_cell ) , GFP_KERNEL ) ; if ( adev -> acp . acp_cell == NULL ) <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> <S2SV_StartBug> adev -> acp . acp_res = kcalloc ( 5 , sizeof ( struct resource ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( adev -> acp . acp_res == NULL ) { <S2SV_StartBug> kfree ( adev -> acp . acp_cell ) ; <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> } <S2SV_EndBug> i2s_pdata = kcalloc ( 3 , sizeof ( struct i2s_platform_data ) , GFP_KERNEL ) ; if ( i2s_pdata == NULL ) { <S2SV_StartBug> kfree ( adev -> acp . acp_res ) ; <S2SV_EndBug> kfree ( adev -> acp . acp_cell ) ; return - ENOMEM ; } switch ( adev -> asic_type ) { case CHIP_STONEY : i2s_pdata [ 0 ] . quirks = DW_I2S_QUIRK_COMP_REG_OFFSET | DW_I2S_QUIRK_16BIT_IDX_OVERRIDE ; break ; default : i2s_pdata [ 0 ] . quirks = DW_I2S_QUIRK_COMP_REG_OFFSET ; } i2s_pdata [ 0 ] . cap = DWC_I2S_PLAY ; i2s_pdata [ 0 ] . snd_rates = SNDRV_PCM_RATE_8000_96000 ; i2s_pdata [ 0 ] . i2s_reg_comp1 = ACP_I2S_COMP1_PLAY_REG_OFFSET ; i2s_pdata [ 0 ] . i2s_reg_comp2 = ACP_I2S_COMP2_PLAY_REG_OFFSET ; switch ( adev -> asic_type ) { case CHIP_STONEY : i2s_pdata [ 1 ] . quirks = DW_I2S_QUIRK_COMP_REG_OFFSET | DW_I2S_QUIRK_COMP_PARAM1 | DW_I2S_QUIRK_16BIT_IDX_OVERRIDE ; break ; default : i2s_pdata [ 1 ] . quirks = DW_I2S_QUIRK_COMP_REG_OFFSET | DW_I2S_QUIRK_COMP_PARAM1 ; } i2s_pdata [ 1 ] . cap = DWC_I2S_RECORD ; i2s_pdata [ 1 ] . snd_rates = SNDRV_PCM_RATE_8000_96000 ; i2s_pdata [ 1 ] . i2s_reg_comp1 = ACP_I2S_COMP1_CAP_REG_OFFSET ; i2s_pdata [ 1 ] . i2s_reg_comp2 = ACP_I2S_COMP2_CAP_REG_OFFSET ; i2s_pdata [ 2 ] . quirks = DW_I2S_QUIRK_COMP_REG_OFFSET ; switch ( adev -> asic_type ) { case CHIP_STONEY : i2s_pdata [ 2 ] . quirks |= DW_I2S_QUIRK_16BIT_IDX_OVERRIDE ; break ; default : break ; } i2s_pdata [ 2 ] . cap = DWC_I2S_PLAY | DWC_I2S_RECORD ; i2s_pdata [ 2 ] . snd_rates = SNDRV_PCM_RATE_8000_96000 ; i2s_pdata [ 2 ] . i2s_reg_comp1 = ACP_BT_COMP1_REG_OFFSET ; i2s_pdata [ 2 ] . i2s_reg_comp2 = ACP_BT_COMP2_REG_OFFSET ; adev -> acp . acp_res [ 0 ] . name = \"acp2x_dma\" ; adev -> acp . acp_res [ 0 ] . flags = IORESOURCE_MEM ; adev -> acp . acp_res [ 0 ] . start = acp_base ; adev -> acp . acp_res [ 0 ] . end = acp_base + ACP_DMA_REGS_END ; adev -> acp . acp_res [ 1 ] . name = \"acp2x_dw_i2s_play\" ; adev -> acp . acp_res [ 1 ] . flags = IORESOURCE_MEM ; adev -> acp . acp_res [ 1 ] . start = acp_base + ACP_I2S_PLAY_REGS_START ; adev -> acp . acp_res [ 1 ] . end = acp_base + ACP_I2S_PLAY_REGS_END ; adev -> acp . acp_res [ 2 ] . name = \"acp2x_dw_i2s_cap\" ; adev -> acp . acp_res [ 2 ] . flags = IORESOURCE_MEM ; adev -> acp . acp_res [ 2 ] . start = acp_base + ACP_I2S_CAP_REGS_START ; adev -> acp . acp_res [ 2 ] . end = acp_base + ACP_I2S_CAP_REGS_END ; adev -> acp . acp_res [ 3 ] . name = \"acp2x_dw_bt_i2s_play_cap\" ; adev -> acp . acp_res [ 3 ] . flags = IORESOURCE_MEM ; adev -> acp . acp_res [ 3 ] . start = acp_base + ACP_BT_PLAY_REGS_START ; adev -> acp . acp_res [ 3 ] . end = acp_base + ACP_BT_PLAY_REGS_END ; adev -> acp . acp_res [ 4 ] . name = \"acp2x_dma_irq\" ; adev -> acp . acp_res [ 4 ] . flags = IORESOURCE_IRQ ; adev -> acp . acp_res [ 4 ] . start = amdgpu_irq_create_mapping ( adev , 162 ) ; adev -> acp . acp_res [ 4 ] . end = adev -> acp . acp_res [ 4 ] . start ; adev -> acp . acp_cell [ 0 ] . name = \"acp_audio_dma\" ; adev -> acp . acp_cell [ 0 ] . num_resources = 5 ; adev -> acp . acp_cell [ 0 ] . resources = & adev -> acp . acp_res [ 0 ] ; adev -> acp . acp_cell [ 0 ] . platform_data = & adev -> asic_type ; adev -> acp . acp_cell [ 0 ] . pdata_size = sizeof ( adev -> asic_type ) ; adev -> acp . acp_cell [ 1 ] . name = \"designware-i2s\" ; adev -> acp . acp_cell [ 1 ] . num_resources = 1 ; adev -> acp . acp_cell [ 1 ] . resources = & adev -> acp . acp_res [ 1 ] ; adev -> acp . acp_cell [ 1 ] . platform_data = & i2s_pdata [ 0 ] ; adev -> acp . acp_cell [ 1 ] . pdata_size = sizeof ( struct i2s_platform_data ) ; adev -> acp . acp_cell [ 2 ] . name = \"designware-i2s\" ; adev -> acp . acp_cell [ 2 ] . num_resources = 1 ; adev -> acp . acp_cell [ 2 ] . resources = & adev -> acp . acp_res [ 2 ] ; adev -> acp . acp_cell [ 2 ] . platform_data = & i2s_pdata [ 1 ] ; adev -> acp . acp_cell [ 2 ] . pdata_size = sizeof ( struct i2s_platform_data ) ; adev -> acp . acp_cell [ 3 ] . name = \"designware-i2s\" ; adev -> acp . acp_cell [ 3 ] . num_resources = 1 ; adev -> acp . acp_cell [ 3 ] . resources = & adev -> acp . acp_res [ 3 ] ; adev -> acp . acp_cell [ 3 ] . platform_data = & i2s_pdata [ 2 ] ; adev -> acp . acp_cell [ 3 ] . pdata_size = sizeof ( struct i2s_platform_data ) ; r = mfd_add_hotplug_devices ( adev -> acp . parent , adev -> acp . acp_cell , ACP_DEVS ) ; if ( r ) <S2SV_StartBug> return r ; <S2SV_EndBug> for ( i = 0 ; i < ACP_DEVS ; i ++ ) { dev = get_mfd_cell_dev ( adev -> acp . acp_cell [ i ] . name , i ) ; r = pm_genpd_add_device ( & adev -> acp . acp_genpd -> gpd , dev ) ; if ( r ) { dev_err ( dev , \"Failed<S2SV_blank>to<S2SV_blank>add<S2SV_blank>dev<S2SV_blank>to<S2SV_blank>genpd\\\\n\" ) ; <S2SV_StartBug> return r ; <S2SV_EndBug> } } val = cgs_read_register ( adev -> acp . cgs_device , mmACP_SOFT_RESET ) ; val |= ACP_SOFT_RESET__SoftResetAud_MASK ; cgs_write_register ( adev -> acp . cgs_device , mmACP_SOFT_RESET , val ) ; count = ACP_SOFT_RESET_DONE_TIME_OUT_VALUE ; while ( true ) { val = cgs_read_register ( adev -> acp . cgs_device , mmACP_SOFT_RESET ) ; if ( ACP_SOFT_RESET__SoftResetAudDone_MASK == ( val & ACP_SOFT_RESET__SoftResetAudDone_MASK ) ) break ; if ( -- count == 0 ) { dev_err ( & adev -> pdev -> dev , \"Failed<S2SV_blank>to<S2SV_blank>reset<S2SV_blank>ACP\\\\n\" ) ; <S2SV_StartBug> return - ETIMEDOUT ; <S2SV_EndBug> } udelay ( 100 ) ; } val = cgs_read_register ( adev -> acp . cgs_device , mmACP_CONTROL ) ; val = val | ACP_CONTROL__ClkEn_MASK ; cgs_write_register ( adev -> acp . cgs_device , mmACP_CONTROL , val ) ; count = ACP_CLOCK_EN_TIME_OUT_VALUE ; while ( true ) { val = cgs_read_register ( adev -> acp . cgs_device , mmACP_STATUS ) ; if ( val & ( u32 ) 0x1 ) break ; if ( -- count == 0 ) { dev_err ( & adev -> pdev -> dev , \"Failed<S2SV_blank>to<S2SV_blank>reset<S2SV_blank>ACP\\\\n\" ) ; <S2SV_StartBug> return - ETIMEDOUT ; <S2SV_EndBug> } udelay ( 100 ) ; } val = cgs_read_register ( adev -> acp . cgs_device , mmACP_SOFT_RESET ) ; val &= ~ ACP_SOFT_RESET__SoftResetAud_MASK ; cgs_write_register ( adev -> acp . cgs_device , mmACP_SOFT_RESET , val ) ; return 0 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i2s_platform_data * i2s_pdata = NULL <S2SV_ModStart> == NULL ) { r = <S2SV_ModEnd> - ENOMEM ; <S2SV_ModStart> - ENOMEM ; goto failure ; } <S2SV_ModStart> NULL ) { r = <S2SV_ModEnd> - ENOMEM ; <S2SV_ModStart> - ENOMEM ; goto failure ; <S2SV_ModStart> NULL ) { r = - ENOMEM ; goto failure <S2SV_ModEnd> ; } switch <S2SV_ModStart> ( r ) goto failure <S2SV_ModEnd> ; for ( <S2SV_ModStart> \"Failed<S2SV_blank>to<S2SV_blank>add<S2SV_blank>dev<S2SV_blank>to<S2SV_blank>genpd\\\\n\" ) ; goto failure <S2SV_ModEnd> ; } } <S2SV_ModStart> \"Failed<S2SV_blank>to<S2SV_blank>reset<S2SV_blank>ACP\\\\n\" ) ; r = - ETIMEDOUT ; goto failure <S2SV_ModEnd> ; } udelay <S2SV_ModStart> \"Failed<S2SV_blank>to<S2SV_blank>reset<S2SV_blank>ACP\\\\n\" ) ; r = - ETIMEDOUT ; goto failure <S2SV_ModEnd> ; } udelay <S2SV_ModStart> return 0 ; failure : kfree ( i2s_pdata ) ; kfree ( adev -> acp . acp_res ) ; kfree ( adev -> acp . acp_cell ) ; kfree ( adev -> acp . acp_genpd ) ; return r ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7133\n\n```\nCWE-190 static void * zend_mm_realloc_heap ( zend_mm_heap * heap , void * ptr , size_t size , size_t copy_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC ) { size_t page_offset ; size_t old_size ; size_t new_size ; void * ret ; # if ZEND_DEBUG size_t real_size ; zend_mm_debug_info * dbg ; # endif page_offset = ZEND_MM_ALIGNED_OFFSET ( ptr , ZEND_MM_CHUNK_SIZE ) ; if ( UNEXPECTED ( page_offset == 0 ) ) { if ( UNEXPECTED ( ptr == NULL ) ) { return zend_mm_alloc_heap ( heap , size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; } old_size = zend_mm_get_huge_block_size ( heap , ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # if ZEND_DEBUG real_size = size ; size = ZEND_MM_ALIGNED_SIZE ( size ) + ZEND_MM_ALIGNED_SIZE ( sizeof ( zend_mm_debug_info ) ) ; # endif if ( size > ZEND_MM_MAX_LARGE_SIZE ) { # if ZEND_DEBUG size = real_size ; # endif # ifdef ZEND_WIN32 new_size = ZEND_MM_ALIGNED_SIZE_EX ( size , MAX ( REAL_PAGE_SIZE , ZEND_MM_CHUNK_SIZE ) ) ; # else new_size = ZEND_MM_ALIGNED_SIZE_EX ( size , REAL_PAGE_SIZE ) ; # endif if ( new_size == old_size ) { # if ZEND_DEBUG zend_mm_change_huge_block_size ( heap , ptr , new_size , real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # else zend_mm_change_huge_block_size ( heap , ptr , new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # endif return ptr ; } else if ( new_size < old_size ) { if ( zend_mm_chunk_truncate ( heap , ptr , old_size , new_size ) ) { # if ZEND_MM_STAT || ZEND_MM_LIMIT heap -> real_size -= old_size - new_size ; # endif # if ZEND_MM_STAT heap -> size -= old_size - new_size ; # endif # if ZEND_DEBUG zend_mm_change_huge_block_size ( heap , ptr , new_size , real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # else zend_mm_change_huge_block_size ( heap , ptr , new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # endif return ptr ; } } else { # if ZEND_MM_LIMIT if ( UNEXPECTED ( heap -> real_size + ( new_size - old_size ) > heap -> limit ) ) { if ( zend_mm_gc ( heap ) && heap -> real_size + ( new_size - old_size ) <= heap -> limit ) { } else if ( heap -> overflow == 0 ) { # if ZEND_DEBUG zend_mm_safe_error ( heap , \"Allowed<S2SV_blank>memory<S2SV_blank>size<S2SV_blank>of<S2SV_blank>%zu<S2SV_blank>bytes<S2SV_blank>exhausted<S2SV_blank>at<S2SV_blank>%s:%d<S2SV_blank>(tried<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>%zu<S2SV_blank>bytes)\" , heap -> limit , __zend_filename , __zend_lineno , size ) ; # else zend_mm_safe_error ( heap , \"Allowed<S2SV_blank>memory<S2SV_blank>size<S2SV_blank>of<S2SV_blank>%zu<S2SV_blank>bytes<S2SV_blank>exhausted<S2SV_blank>(tried<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>%zu<S2SV_blank>bytes)\" , heap -> limit , size ) ; # endif return NULL ; } } # endif if ( zend_mm_chunk_extend ( heap , ptr , old_size , new_size ) ) { # if ZEND_MM_STAT || ZEND_MM_LIMIT heap -> real_size += new_size - old_size ; # endif # if ZEND_MM_STAT heap -> real_peak = MAX ( heap -> real_peak , heap -> real_size ) ; heap -> size += new_size - old_size ; heap -> peak = MAX ( heap -> peak , heap -> size ) ; # endif # if ZEND_DEBUG zend_mm_change_huge_block_size ( heap , ptr , new_size , real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # else zend_mm_change_huge_block_size ( heap , ptr , new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # endif return ptr ; } } } } else { zend_mm_chunk * chunk = ( zend_mm_chunk * ) ZEND_MM_ALIGNED_BASE ( ptr , ZEND_MM_CHUNK_SIZE ) ; int page_num = ( int ) ( page_offset / ZEND_MM_PAGE_SIZE ) ; zend_mm_page_info info = chunk -> map [ page_num ] ; # if ZEND_DEBUG size_t real_size = size ; size = ZEND_MM_ALIGNED_SIZE ( size ) + ZEND_MM_ALIGNED_SIZE ( sizeof ( zend_mm_debug_info ) ) ; # endif ZEND_MM_CHECK ( chunk -> heap == heap , \"zend_mm_heap<S2SV_blank>corrupted\" ) ; if ( info & ZEND_MM_IS_SRUN ) { <S2SV_StartBug> int old_bin_num , bin_num ; <S2SV_EndBug> old_bin_num = ZEND_MM_SRUN_BIN_NUM ( info ) ; old_size = bin_data_size [ old_bin_num ] ; <S2SV_StartBug> bin_num = ZEND_MM_SMALL_SIZE_TO_BIN ( size ) ; <S2SV_EndBug> if ( old_bin_num == bin_num ) { # if ZEND_DEBUG dbg = zend_mm_get_debug_info ( heap , ptr ) ; dbg -> size = real_size ; dbg -> filename = __zend_filename ; dbg -> orig_filename = __zend_orig_filename ; dbg -> lineno = __zend_lineno ; dbg -> orig_lineno = __zend_orig_lineno ; # endif <S2SV_StartBug> return ptr ; <S2SV_EndBug> } } else { ZEND_MM_CHECK ( ZEND_MM_ALIGNED_OFFSET ( page_offset , ZEND_MM_PAGE_SIZE ) == 0 , \"zend_mm_heap<S2SV_blank>corrupted\" ) ; old_size = ZEND_MM_LRUN_PAGES ( info ) * ZEND_MM_PAGE_SIZE ; if ( size > ZEND_MM_MAX_SMALL_SIZE && size <= ZEND_MM_MAX_LARGE_SIZE ) { new_size = ZEND_MM_ALIGNED_SIZE_EX ( size , ZEND_MM_PAGE_SIZE ) ; if ( new_size == old_size ) { # if ZEND_DEBUG dbg = zend_mm_get_debug_info ( heap , ptr ) ; dbg -> size = real_size ; dbg -> filename = __zend_filename ; dbg -> orig_filename = __zend_orig_filename ; dbg -> lineno = __zend_lineno ; dbg -> orig_lineno = __zend_orig_lineno ; # endif return ptr ; } else if ( new_size < old_size ) { int new_pages_count = ( int ) ( new_size / ZEND_MM_PAGE_SIZE ) ; int rest_pages_count = ( int ) ( ( old_size - new_size ) / ZEND_MM_PAGE_SIZE ) ; # if ZEND_MM_STAT heap -> size -= rest_pages_count * ZEND_MM_PAGE_SIZE ; # endif chunk -> map [ page_num ] = ZEND_MM_LRUN ( new_pages_count ) ; chunk -> free_pages += rest_pages_count ; zend_mm_bitset_reset_range ( chunk -> free_map , page_num + new_pages_count , rest_pages_count ) ; # if ZEND_DEBUG dbg = zend_mm_get_debug_info ( heap , ptr ) ; dbg -> size = real_size ; dbg -> filename = __zend_filename ; dbg -> orig_filename = __zend_orig_filename ; dbg -> lineno = __zend_lineno ; dbg -> orig_lineno = __zend_orig_lineno ; # endif return ptr ; } else { int new_pages_count = ( int ) ( new_size / ZEND_MM_PAGE_SIZE ) ; int old_pages_count = ( int ) ( old_size / ZEND_MM_PAGE_SIZE ) ; if ( page_num + new_pages_count <= ZEND_MM_PAGES && zend_mm_bitset_is_free_range ( chunk -> free_map , page_num + old_pages_count , new_pages_count - old_pages_count ) ) { # if ZEND_MM_STAT do { size_t size = heap -> size + ( new_size - old_size ) ; size_t peak = MAX ( heap -> peak , size ) ; heap -> size = size ; heap -> peak = peak ; } while ( 0 ) ; # endif chunk -> free_pages -= new_pages_count - old_pages_count ; zend_mm_bitset_set_range ( chunk -> free_map , page_num + old_pages_count , new_pages_count - old_pages_count ) ; chunk -> map [ page_num ] = ZEND_MM_LRUN ( new_pages_count ) ; # if ZEND_DEBUG dbg = zend_mm_get_debug_info ( heap , ptr ) ; dbg -> size = real_size ; dbg -> filename = __zend_filename ; dbg -> orig_filename = __zend_orig_filename ; dbg -> lineno = __zend_lineno ; dbg -> orig_lineno = __zend_orig_lineno ; # endif return ptr ; } } } } # if ZEND_DEBUG size = real_size ; # endif } # if ZEND_MM_STAT do { size_t orig_peak = heap -> peak ; size_t orig_real_peak = heap -> real_peak ; # endif ret = zend_mm_alloc_heap ( heap , size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; memcpy ( ret , ptr , MIN ( old_size , copy_size ) ) ; zend_mm_free_heap ( heap , ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # if ZEND_MM_STAT heap -> peak = MAX ( orig_peak , heap -> size ) ; heap -> real_peak = MAX ( orig_real_peak , heap -> real_size ) ; } while ( 0 ) ; # endif return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { int old_bin_num <S2SV_ModEnd> = ZEND_MM_SRUN_BIN_NUM ( <S2SV_ModStart> old_bin_num ] ; if ( size <= ZEND_MM_MAX_SMALL_SIZE ) { int <S2SV_ModStart> return ptr ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16996\n\n```\nCWE-119 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { <S2SV_StartBug> coerce_reg_to_32 ( dst_reg ) ; <S2SV_EndBug> <S2SV_StartBug> coerce_reg_to_32 ( & src_reg ) ; <S2SV_EndBug> } smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; switch ( opcode ) { case BPF_ADD : if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : if ( umax_val > 63 ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } if ( src_known ) dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_lshift ( tnum_unknown , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : if ( umax_val > 63 ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( src_known ) dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_rshift ( tnum_unknown , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BPF_ALU64 ) { coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size <S2SV_ModEnd> ( & src_reg <S2SV_ModStart> ( & src_reg , 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12106\n\n```\nCWE-416 static int updateDevice ( const struct header * headers , time_t t ) { struct device * * pp = & devlist ; struct device * p = * pp ; while ( p ) { if ( p -> headers [ HEADER_NT ] . l == headers [ HEADER_NT ] . l && ( 0 == memcmp ( p -> headers [ HEADER_NT ] . p , headers [ HEADER_NT ] . p , headers [ HEADER_NT ] . l ) ) && p -> headers [ HEADER_USN ] . l == headers [ HEADER_USN ] . l && ( 0 == memcmp ( p -> headers [ HEADER_USN ] . p , headers [ HEADER_USN ] . p , headers [ HEADER_USN ] . l ) ) ) { syslog ( LOG_DEBUG , \"device<S2SV_blank>updated<S2SV_blank>:<S2SV_blank>%.*s\" , headers [ HEADER_USN ] . l , headers [ HEADER_USN ] . p ) ; p -> t = t ; if ( headers [ HEADER_LOCATION ] . l > p -> headers [ HEADER_LOCATION ] . l ) { struct device * tmp ; tmp = realloc ( p , sizeof ( struct device ) + headers [ 0 ] . l + headers [ 1 ] . l + headers [ 2 ] . l ) ; if ( ! tmp ) { syslog ( LOG_ERR , \"updateDevice()<S2SV_blank>:<S2SV_blank>memory<S2SV_blank>allocation<S2SV_blank>error\" ) ; <S2SV_StartBug> free ( p ) ; <S2SV_EndBug> return 0 ; } p = tmp ; * pp = p ; } memcpy ( p -> data + p -> headers [ 0 ] . l + p -> headers [ 1 ] . l , headers [ 2 ] . p , headers [ 2 ] . l ) ; return 0 ; } pp = & p -> next ; p = * pp ; } syslog ( LOG_INFO , \"new<S2SV_blank>device<S2SV_blank>discovered<S2SV_blank>:<S2SV_blank>%.*s\" , headers [ HEADER_USN ] . l , headers [ HEADER_USN ] . p ) ; { char * pc ; int i ; p = malloc ( sizeof ( struct device ) + headers [ 0 ] . l + headers [ 1 ] . l + headers [ 2 ] . l ) ; if ( ! p ) { syslog ( LOG_ERR , \"updateDevice():<S2SV_blank>cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; return - 1 ; } p -> next = devlist ; p -> t = t ; pc = p -> data ; for ( i = 0 ; i < 3 ; i ++ ) { p -> headers [ i ] . p = pc ; p -> headers [ i ] . l = headers [ i ] . l ; memcpy ( pc , headers [ i ] . p , headers [ i ] . l ) ; pc += headers [ i ] . l ; } devlist = p ; sendNotifications ( NOTIF_NEW , p , NULL ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"updateDevice()<S2SV_blank>:<S2SV_blank>memory<S2SV_blank>allocation<S2SV_blank>error\" ) ; * pp = p -> next ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8966\n\n```\nCWE-264 asmlinkage long sys_oabi_fcntl64 ( unsigned int fd , unsigned int cmd , unsigned long arg ) { <S2SV_StartBug> struct oabi_flock64 user ; <S2SV_EndBug> struct flock64 kernel ; mm_segment_t fs = USER_DS ; unsigned long local_arg = arg ; int ret ; switch ( cmd ) { case F_OFD_GETLK : case F_OFD_SETLK : case F_OFD_SETLKW : case F_GETLK64 : case F_SETLK64 : case F_SETLKW64 : <S2SV_StartBug> if ( copy_from_user ( & user , ( struct oabi_flock64 __user * ) arg , <S2SV_EndBug> sizeof ( user ) ) ) return - EFAULT ; kernel . l_type = user . l_type ; kernel . l_whence = user . l_whence ; kernel . l_start = user . l_start ; kernel . l_len = user . l_len ; kernel . l_pid = user . l_pid ; local_arg = ( unsigned long ) & kernel ; fs = get_fs ( ) ; set_fs ( KERNEL_DS ) ; } <S2SV_StartBug> ret = sys_fcntl64 ( fd , cmd , local_arg ) ; <S2SV_EndBug> switch ( cmd ) { case F_GETLK64 : if ( ! ret ) { user . l_type = kernel . l_type ; user . l_whence = kernel . l_whence ; user . l_start = kernel . l_start ; user . l_len = kernel . l_len ; user . l_pid = kernel . l_pid ; if ( copy_to_user ( ( struct oabi_flock64 __user * ) arg , & user , sizeof ( user ) ) ) ret = - EFAULT ; } case F_SETLK64 : case F_SETLKW64 : set_fs ( fs ) ; } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg ) { <S2SV_ModEnd> switch ( cmd <S2SV_ModStart> case F_SETLKW64 : return do_locks ( fd , cmd , arg ) ; default : return <S2SV_ModEnd> sys_fcntl64 ( fd <S2SV_ModStart> , cmd , arg <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void fdct16_8col ( __m128i * in ) { <S2SV_EndBug> __m128i i [ 8 ] , s [ 8 ] , p [ 8 ] , t [ 8 ] , u [ 16 ] , v [ 16 ] ; <S2SV_StartBug> const __m128i k__cospi_p16_p16 = _mm_set1_epi16 ( cospi_16_64 ) ; <S2SV_EndBug> const __m128i k__cospi_p16_m16 = pair_set_epi16 ( cospi_16_64 , - cospi_16_64 ) ; const __m128i k__cospi_m16_p16 = pair_set_epi16 ( - cospi_16_64 , cospi_16_64 ) ; const __m128i k__cospi_p24_p08 = pair_set_epi16 ( cospi_24_64 , cospi_8_64 ) ; <S2SV_StartBug> const __m128i k__cospi_m24_m08 = pair_set_epi16 ( - cospi_24_64 , - cospi_8_64 ) ; <S2SV_EndBug> const __m128i k__cospi_m08_p24 = pair_set_epi16 ( - cospi_8_64 , cospi_24_64 ) ; const __m128i k__cospi_p28_p04 = pair_set_epi16 ( cospi_28_64 , cospi_4_64 ) ; const __m128i k__cospi_m04_p28 = pair_set_epi16 ( - cospi_4_64 , cospi_28_64 ) ; const __m128i k__cospi_p12_p20 = pair_set_epi16 ( cospi_12_64 , cospi_20_64 ) ; const __m128i k__cospi_m20_p12 = pair_set_epi16 ( - cospi_20_64 , cospi_12_64 ) ; const __m128i k__cospi_p30_p02 = pair_set_epi16 ( cospi_30_64 , cospi_2_64 ) ; const __m128i k__cospi_p14_p18 = pair_set_epi16 ( cospi_14_64 , cospi_18_64 ) ; const __m128i k__cospi_m02_p30 = pair_set_epi16 ( - cospi_2_64 , cospi_30_64 ) ; const __m128i k__cospi_m18_p14 = pair_set_epi16 ( - cospi_18_64 , cospi_14_64 ) ; const __m128i k__cospi_p22_p10 = pair_set_epi16 ( cospi_22_64 , cospi_10_64 ) ; const __m128i k__cospi_p06_p26 = pair_set_epi16 ( cospi_6_64 , cospi_26_64 ) ; const __m128i k__cospi_m10_p22 = pair_set_epi16 ( - cospi_10_64 , cospi_22_64 ) ; const __m128i k__cospi_m26_p06 = pair_set_epi16 ( - cospi_26_64 , cospi_6_64 ) ; const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32 ( DCT_CONST_ROUNDING ) ; i [ 0 ] = _mm_add_epi16 ( in [ 0 ] , in [ 15 ] ) ; i [ 1 ] = _mm_add_epi16 ( in [ 1 ] , in [ 14 ] ) ; i [ 2 ] = _mm_add_epi16 ( in [ 2 ] , in [ 13 ] ) ; i [ 3 ] = _mm_add_epi16 ( in [ 3 ] , in [ 12 ] ) ; i [ 4 ] = _mm_add_epi16 ( in [ 4 ] , in [ 11 ] ) ; i [ 5 ] = _mm_add_epi16 ( in [ 5 ] , in [ 10 ] ) ; i [ 6 ] = _mm_add_epi16 ( in [ 6 ] , in [ 9 ] ) ; i [ 7 ] = _mm_add_epi16 ( in [ 7 ] , in [ 8 ] ) ; s [ 0 ] = _mm_sub_epi16 ( in [ 7 ] , in [ 8 ] ) ; s [ 1 ] = _mm_sub_epi16 ( in [ 6 ] , in [ 9 ] ) ; s [ 2 ] = _mm_sub_epi16 ( in [ 5 ] , in [ 10 ] ) ; s [ 3 ] = _mm_sub_epi16 ( in [ 4 ] , in [ 11 ] ) ; s [ 4 ] = _mm_sub_epi16 ( in [ 3 ] , in [ 12 ] ) ; s [ 5 ] = _mm_sub_epi16 ( in [ 2 ] , in [ 13 ] ) ; s [ 6 ] = _mm_sub_epi16 ( in [ 1 ] , in [ 14 ] ) ; s [ 7 ] = _mm_sub_epi16 ( in [ 0 ] , in [ 15 ] ) ; p [ 0 ] = _mm_add_epi16 ( i [ 0 ] , i [ 7 ] ) ; p [ 1 ] = _mm_add_epi16 ( i [ 1 ] , i [ 6 ] ) ; p [ 2 ] = _mm_add_epi16 ( i [ 2 ] , i [ 5 ] ) ; p [ 3 ] = _mm_add_epi16 ( i [ 3 ] , i [ 4 ] ) ; p [ 4 ] = _mm_sub_epi16 ( i [ 3 ] , i [ 4 ] ) ; p [ 5 ] = _mm_sub_epi16 ( i [ 2 ] , i [ 5 ] ) ; p [ 6 ] = _mm_sub_epi16 ( i [ 1 ] , i [ 6 ] ) ; p [ 7 ] = _mm_sub_epi16 ( i [ 0 ] , i [ 7 ] ) ; u [ 0 ] = _mm_add_epi16 ( p [ 0 ] , p [ 3 ] ) ; u [ 1 ] = _mm_add_epi16 ( p [ 1 ] , p [ 2 ] ) ; u [ 2 ] = _mm_sub_epi16 ( p [ 1 ] , p [ 2 ] ) ; u [ 3 ] = _mm_sub_epi16 ( p [ 0 ] , p [ 3 ] ) ; v [ 0 ] = _mm_unpacklo_epi16 ( u [ 0 ] , u [ 1 ] ) ; v [ 1 ] = _mm_unpackhi_epi16 ( u [ 0 ] , u [ 1 ] ) ; v [ 2 ] = _mm_unpacklo_epi16 ( u [ 2 ] , u [ 3 ] ) ; v [ 3 ] = _mm_unpackhi_epi16 ( u [ 2 ] , u [ 3 ] ) ; u [ 0 ] = _mm_madd_epi16 ( v [ 0 ] , k__cospi_p16_p16 ) ; u [ 1 ] = _mm_madd_epi16 ( v [ 1 ] , k__cospi_p16_p16 ) ; u [ 2 ] = _mm_madd_epi16 ( v [ 0 ] , k__cospi_p16_m16 ) ; u [ 3 ] = _mm_madd_epi16 ( v [ 1 ] , k__cospi_p16_m16 ) ; u [ 4 ] = _mm_madd_epi16 ( v [ 2 ] , k__cospi_p24_p08 ) ; u [ 5 ] = _mm_madd_epi16 ( v [ 3 ] , k__cospi_p24_p08 ) ; u [ 6 ] = _mm_madd_epi16 ( v [ 2 ] , k__cospi_m08_p24 ) ; u [ 7 ] = _mm_madd_epi16 ( v [ 3 ] , k__cospi_m08_p24 ) ; v [ 0 ] = _mm_add_epi32 ( u [ 0 ] , k__DCT_CONST_ROUNDING ) ; v [ 1 ] = _mm_add_epi32 ( u [ 1 ] , k__DCT_CONST_ROUNDING ) ; v [ 2 ] = _mm_add_epi32 ( u [ 2 ] , k__DCT_CONST_ROUNDING ) ; v [ 3 ] = _mm_add_epi32 ( u [ 3 ] , k__DCT_CONST_ROUNDING ) ; v [ 4 ] = _mm_add_epi32 ( u [ 4 ] , k__DCT_CONST_ROUNDING ) ; v [ 5 ] = _mm_add_epi32 ( u [ 5 ] , k__DCT_CONST_ROUNDING ) ; v [ 6 ] = _mm_add_epi32 ( u [ 6 ] , k__DCT_CONST_ROUNDING ) ; v [ 7 ] = _mm_add_epi32 ( u [ 7 ] , k__DCT_CONST_ROUNDING ) ; u [ 0 ] = _mm_srai_epi32 ( v [ 0 ] , DCT_CONST_BITS ) ; u [ 1 ] = _mm_srai_epi32 ( v [ 1 ] , DCT_CONST_BITS ) ; u [ 2 ] = _mm_srai_epi32 ( v [ 2 ] , DCT_CONST_BITS ) ; u [ 3 ] = _mm_srai_epi32 ( v [ 3 ] , DCT_CONST_BITS ) ; u [ 4 ] = _mm_srai_epi32 ( v [ 4 ] , DCT_CONST_BITS ) ; u [ 5 ] = _mm_srai_epi32 ( v [ 5 ] , DCT_CONST_BITS ) ; u [ 6 ] = _mm_srai_epi32 ( v [ 6 ] , DCT_CONST_BITS ) ; u [ 7 ] = _mm_srai_epi32 ( v [ 7 ] , DCT_CONST_BITS ) ; in [ 0 ] = _mm_packs_epi32 ( u [ 0 ] , u [ 1 ] ) ; in [ 4 ] = _mm_packs_epi32 ( u [ 4 ] , u [ 5 ] ) ; in [ 8 ] = _mm_packs_epi32 ( u [ 2 ] , u [ 3 ] ) ; in [ 12 ] = _mm_packs_epi32 ( u [ 6 ] , u [ 7 ] ) ; u [ 0 ] = _mm_unpacklo_epi16 ( p [ 5 ] , p [ 6 ] ) ; u [ 1 ] = _mm_unpackhi_epi16 ( p [ 5 ] , p [ 6 ] ) ; v [ 0 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_m16_p16 ) ; v [ 1 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_m16_p16 ) ; v [ 2 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_p16_p16 ) ; v [ 3 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_p16_p16 ) ; u [ 0 ] = _mm_add_epi32 ( v [ 0 ] , k__DCT_CONST_ROUNDING ) ; u [ 1 ] = _mm_add_epi32 ( v [ 1 ] , k__DCT_CONST_ROUNDING ) ; u [ 2 ] = _mm_add_epi32 ( v [ 2 ] , k__DCT_CONST_ROUNDING ) ; u [ 3 ] = _mm_add_epi32 ( v [ 3 ] , k__DCT_CONST_ROUNDING ) ; v [ 0 ] = _mm_srai_epi32 ( u [ 0 ] , DCT_CONST_BITS ) ; v [ 1 ] = _mm_srai_epi32 ( u [ 1 ] , DCT_CONST_BITS ) ; v [ 2 ] = _mm_srai_epi32 ( u [ 2 ] , DCT_CONST_BITS ) ; v [ 3 ] = _mm_srai_epi32 ( u [ 3 ] , DCT_CONST_BITS ) ; u [ 0 ] = _mm_packs_epi32 ( v [ 0 ] , v [ 1 ] ) ; u [ 1 ] = _mm_packs_epi32 ( v [ 2 ] , v [ 3 ] ) ; t [ 0 ] = _mm_add_epi16 ( p [ 4 ] , u [ 0 ] ) ; t [ 1 ] = _mm_sub_epi16 ( p [ 4 ] , u [ 0 ] ) ; t [ 2 ] = _mm_sub_epi16 ( p [ 7 ] , u [ 1 ] ) ; t [ 3 ] = _mm_add_epi16 ( p [ 7 ] , u [ 1 ] ) ; u [ 0 ] = _mm_unpacklo_epi16 ( t [ 0 ] , t [ 3 ] ) ; u [ 1 ] = _mm_unpackhi_epi16 ( t [ 0 ] , t [ 3 ] ) ; u [ 2 ] = _mm_unpacklo_epi16 ( t [ 1 ] , t [ 2 ] ) ; u [ 3 ] = _mm_unpackhi_epi16 ( t [ 1 ] , t [ 2 ] ) ; v [ 0 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_p28_p04 ) ; v [ 1 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_p28_p04 ) ; v [ 2 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_p12_p20 ) ; v [ 3 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_p12_p20 ) ; v [ 4 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_m20_p12 ) ; v [ 5 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_m20_p12 ) ; v [ 6 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_m04_p28 ) ; v [ 7 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_m04_p28 ) ; u [ 0 ] = _mm_add_epi32 ( v [ 0 ] , k__DCT_CONST_ROUNDING ) ; u [ 1 ] = _mm_add_epi32 ( v [ 1 ] , k__DCT_CONST_ROUNDING ) ; u [ 2 ] = _mm_add_epi32 ( v [ 2 ] , k__DCT_CONST_ROUNDING ) ; u [ 3 ] = _mm_add_epi32 ( v [ 3 ] , k__DCT_CONST_ROUNDING ) ; u [ 4 ] = _mm_add_epi32 ( v [ 4 ] , k__DCT_CONST_ROUNDING ) ; u [ 5 ] = _mm_add_epi32 ( v [ 5 ] , k__DCT_CONST_ROUNDING ) ; u [ 6 ] = _mm_add_epi32 ( v [ 6 ] , k__DCT_CONST_ROUNDING ) ; u [ 7 ] = _mm_add_epi32 ( v [ 7 ] , k__DCT_CONST_ROUNDING ) ; v [ 0 ] = _mm_srai_epi32 ( u [ 0 ] , DCT_CONST_BITS ) ; v [ 1 ] = _mm_srai_epi32 ( u [ 1 ] , DCT_CONST_BITS ) ; v [ 2 ] = _mm_srai_epi32 ( u [ 2 ] , DCT_CONST_BITS ) ; v [ 3 ] = _mm_srai_epi32 ( u [ 3 ] , DCT_CONST_BITS ) ; v [ 4 ] = _mm_srai_epi32 ( u [ 4 ] , DCT_CONST_BITS ) ; v [ 5 ] = _mm_srai_epi32 ( u [ 5 ] , DCT_CONST_BITS ) ; v [ 6 ] = _mm_srai_epi32 ( u [ 6 ] , DCT_CONST_BITS ) ; v [ 7 ] = _mm_srai_epi32 ( u [ 7 ] , DCT_CONST_BITS ) ; in [ 2 ] = _mm_packs_epi32 ( v [ 0 ] , v [ 1 ] ) ; in [ 6 ] = _mm_packs_epi32 ( v [ 4 ] , v [ 5 ] ) ; in [ 10 ] = _mm_packs_epi32 ( v [ 2 ] , v [ 3 ] ) ; in [ 14 ] = _mm_packs_epi32 ( v [ 6 ] , v [ 7 ] ) ; u [ 0 ] = _mm_unpacklo_epi16 ( s [ 2 ] , s [ 5 ] ) ; u [ 1 ] = _mm_unpackhi_epi16 ( s [ 2 ] , s [ 5 ] ) ; u [ 2 ] = _mm_unpacklo_epi16 ( s [ 3 ] , s [ 4 ] ) ; u [ 3 ] = _mm_unpackhi_epi16 ( s [ 3 ] , s [ 4 ] ) ; v [ 0 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_m16_p16 ) ; v [ 1 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_m16_p16 ) ; v [ 2 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_m16_p16 ) ; v [ 3 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_m16_p16 ) ; v [ 4 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_p16_p16 ) ; v [ 5 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_p16_p16 ) ; v [ 6 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_p16_p16 ) ; v [ 7 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_p16_p16 ) ; u [ 0 ] = _mm_add_epi32 ( v [ 0 ] , k__DCT_CONST_ROUNDING ) ; u [ 1 ] = _mm_add_epi32 ( v [ 1 ] , k__DCT_CONST_ROUNDING ) ; u [ 2 ] = _mm_add_epi32 ( v [ 2 ] , k__DCT_CONST_ROUNDING ) ; u [ 3 ] = _mm_add_epi32 ( v [ 3 ] , k__DCT_CONST_ROUNDING ) ; u [ 4 ] = _mm_add_epi32 ( v [ 4 ] , k__DCT_CONST_ROUNDING ) ; u [ 5 ] = _mm_add_epi32 ( v [ 5 ] , k__DCT_CONST_ROUNDING ) ; u [ 6 ] = _mm_add_epi32 ( v [ 6 ] , k__DCT_CONST_ROUNDING ) ; u [ 7 ] = _mm_add_epi32 ( v [ 7 ] , k__DCT_CONST_ROUNDING ) ; v [ 0 ] = _mm_srai_epi32 ( u [ 0 ] , DCT_CONST_BITS ) ; v [ 1 ] = _mm_srai_epi32 ( u [ 1 ] , DCT_CONST_BITS ) ; v [ 2 ] = _mm_srai_epi32 ( u [ 2 ] , DCT_CONST_BITS ) ; v [ 3 ] = _mm_srai_epi32 ( u [ 3 ] , DCT_CONST_BITS ) ; v [ 4 ] = _mm_srai_epi32 ( u [ 4 ] , DCT_CONST_BITS ) ; v [ 5 ] = _mm_srai_epi32 ( u [ 5 ] , DCT_CONST_BITS ) ; v [ 6 ] = _mm_srai_epi32 ( u [ 6 ] , DCT_CONST_BITS ) ; v [ 7 ] = _mm_srai_epi32 ( u [ 7 ] , DCT_CONST_BITS ) ; t [ 2 ] = _mm_packs_epi32 ( v [ 0 ] , v [ 1 ] ) ; t [ 3 ] = _mm_packs_epi32 ( v [ 2 ] , v [ 3 ] ) ; t [ 4 ] = _mm_packs_epi32 ( v [ 4 ] , v [ 5 ] ) ; t [ 5 ] = _mm_packs_epi32 ( v [ 6 ] , v [ 7 ] ) ; p [ 0 ] = _mm_add_epi16 ( s [ 0 ] , t [ 3 ] ) ; p [ 1 ] = _mm_add_epi16 ( s [ 1 ] , t [ 2 ] ) ; p [ 2 ] = _mm_sub_epi16 ( s [ 1 ] , t [ 2 ] ) ; p [ 3 ] = _mm_sub_epi16 ( s [ 0 ] , t [ 3 ] ) ; p [ 4 ] = _mm_sub_epi16 ( s [ 7 ] , t [ 4 ] ) ; p [ 5 ] = _mm_sub_epi16 ( s [ 6 ] , t [ 5 ] ) ; p [ 6 ] = _mm_add_epi16 ( s [ 6 ] , t [ 5 ] ) ; p [ 7 ] = _mm_add_epi16 ( s [ 7 ] , t [ 4 ] ) ; u [ 0 ] = _mm_unpacklo_epi16 ( p [ 1 ] , p [ 6 ] ) ; u [ 1 ] = _mm_unpackhi_epi16 ( p [ 1 ] , p [ 6 ] ) ; u [ 2 ] = _mm_unpacklo_epi16 ( p [ 2 ] , p [ 5 ] ) ; u [ 3 ] = _mm_unpackhi_epi16 ( p [ 2 ] , p [ 5 ] ) ; v [ 0 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_m08_p24 ) ; v [ 1 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_m08_p24 ) ; <S2SV_StartBug> v [ 2 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_m24_m08 ) ; <S2SV_EndBug> v [ 3 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_m24_m08 ) ; v [ 4 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_m08_p24 ) ; v [ 5 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_m08_p24 ) ; v [ 6 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_p24_p08 ) ; <S2SV_StartBug> v [ 7 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_p24_p08 ) ; <S2SV_EndBug> <S2SV_StartBug> u [ 0 ] = _mm_add_epi32 ( v [ 0 ] , k__DCT_CONST_ROUNDING ) ; <S2SV_EndBug> u [ 1 ] = _mm_add_epi32 ( v [ 1 ] , k__DCT_CONST_ROUNDING ) ; u [ 2 ] = _mm_add_epi32 ( v [ 2 ] , k__DCT_CONST_ROUNDING ) ; u [ 3 ] = _mm_add_epi32 ( v [ 3 ] , k__DCT_CONST_ROUNDING ) ; u [ 4 ] = _mm_add_epi32 ( v [ 4 ] , k__DCT_CONST_ROUNDING ) ; u [ 5 ] = _mm_add_epi32 ( v [ 5 ] , k__DCT_CONST_ROUNDING ) ; u [ 6 ] = _mm_add_epi32 ( v [ 6 ] , k__DCT_CONST_ROUNDING ) ; u [ 7 ] = _mm_add_epi32 ( v [ 7 ] , k__DCT_CONST_ROUNDING ) ; v [ 0 ] = _mm_srai_epi32 ( u [ 0 ] , DCT_CONST_BITS ) ; v [ 1 ] = _mm_srai_epi32 ( u [ 1 ] , DCT_CONST_BITS ) ; v [ 2 ] = _mm_srai_epi32 ( u [ 2 ] , DCT_CONST_BITS ) ; v [ 3 ] = _mm_srai_epi32 ( u [ 3 ] , DCT_CONST_BITS ) ; v [ 4 ] = _mm_srai_epi32 ( u [ 4 ] , DCT_CONST_BITS ) ; v [ 5 ] = _mm_srai_epi32 ( u [ 5 ] , DCT_CONST_BITS ) ; v [ 6 ] = _mm_srai_epi32 ( u [ 6 ] , DCT_CONST_BITS ) ; v [ 7 ] = _mm_srai_epi32 ( u [ 7 ] , DCT_CONST_BITS ) ; t [ 1 ] = _mm_packs_epi32 ( v [ 0 ] , v [ 1 ] ) ; t [ 2 ] = _mm_packs_epi32 ( v [ 2 ] , v [ 3 ] ) ; t [ 5 ] = _mm_packs_epi32 ( v [ 4 ] , v [ 5 ] ) ; t [ 6 ] = _mm_packs_epi32 ( v [ 6 ] , v [ 7 ] ) ; s [ 0 ] = _mm_add_epi16 ( p [ 0 ] , t [ 1 ] ) ; s [ 1 ] = _mm_sub_epi16 ( p [ 0 ] , t [ 1 ] ) ; <S2SV_StartBug> s [ 2 ] = _mm_sub_epi16 ( p [ 3 ] , t [ 2 ] ) ; <S2SV_EndBug> <S2SV_StartBug> s [ 3 ] = _mm_add_epi16 ( p [ 3 ] , t [ 2 ] ) ; <S2SV_EndBug> s [ 4 ] = _mm_add_epi16 ( p [ 4 ] , t [ 5 ] ) ; s [ 5 ] = _mm_sub_epi16 ( p [ 4 ] , t [ 5 ] ) ; s [ 6 ] = _mm_sub_epi16 ( p [ 7 ] , t [ 6 ] ) ; s [ 7 ] = _mm_add_epi16 ( p [ 7 ] , t [ 6 ] ) ; u [ 0 ] = _mm_unpacklo_epi16 ( s [ 0 ] , s [ 7 ] ) ; u [ 1 ] = _mm_unpackhi_epi16 ( s [ 0 ] , s [ 7 ] ) ; u [ 2 ] = _mm_unpacklo_epi16 ( s [ 1 ] , s [ 6 ] ) ; u [ 3 ] = _mm_unpackhi_epi16 ( s [ 1 ] , s [ 6 ] ) ; u [ 4 ] = _mm_unpacklo_epi16 ( s [ 2 ] , s [ 5 ] ) ; u [ 5 ] = _mm_unpackhi_epi16 ( s [ 2 ] , s [ 5 ] ) ; u [ 6 ] = _mm_unpacklo_epi16 ( s [ 3 ] , s [ 4 ] ) ; u [ 7 ] = _mm_unpackhi_epi16 ( s [ 3 ] , s [ 4 ] ) ; v [ 0 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_p30_p02 ) ; v [ 1 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_p30_p02 ) ; v [ 2 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_p14_p18 ) ; v [ 3 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_p14_p18 ) ; v [ 4 ] = _mm_madd_epi16 ( u [ 4 ] , k__cospi_p22_p10 ) ; v [ 5 ] = _mm_madd_epi16 ( u [ 5 ] , k__cospi_p22_p10 ) ; v [ 6 ] = _mm_madd_epi16 ( u [ 6 ] , k__cospi_p06_p26 ) ; v [ 7 ] = _mm_madd_epi16 ( u [ 7 ] , k__cospi_p06_p26 ) ; v [ 8 ] = _mm_madd_epi16 ( u [ 6 ] , k__cospi_m26_p06 ) ; v [ 9 ] = _mm_madd_epi16 ( u [ 7 ] , k__cospi_m26_p06 ) ; v [ 10 ] = _mm_madd_epi16 ( u [ 4 ] , k__cospi_m10_p22 ) ; v [ 11 ] = _mm_madd_epi16 ( u [ 5 ] , k__cospi_m10_p22 ) ; v [ 12 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_m18_p14 ) ; v [ 13 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_m18_p14 ) ; v [ 14 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_m02_p30 ) ; v [ 15 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_m02_p30 ) ; u [ 0 ] = _mm_add_epi32 ( v [ 0 ] , k__DCT_CONST_ROUNDING ) ; u [ 1 ] = _mm_add_epi32 ( v [ 1 ] , k__DCT_CONST_ROUNDING ) ; u [ 2 ] = _mm_add_epi32 ( v [ 2 ] , k__DCT_CONST_ROUNDING ) ; u [ 3 ] = _mm_add_epi32 ( v [ 3 ] , k__DCT_CONST_ROUNDING ) ; u [ 4 ] = _mm_add_epi32 ( v [ 4 ] , k__DCT_CONST_ROUNDING ) ; u [ 5 ] = _mm_add_epi32 ( v [ 5 ] , k__DCT_CONST_ROUNDING ) ; u [ 6 ] = _mm_add_epi32 ( v [ 6 ] , k__DCT_CONST_ROUNDING ) ; u [ 7 ] = _mm_add_epi32 ( v [ 7 ] , k__DCT_CONST_ROUNDING ) ; u [ 8 ] = _mm_add_epi32 ( v [ 8 ] , k__DCT_CONST_ROUNDING ) ; u [ 9 ] = _mm_add_epi32 ( v [ 9 ] , k__DCT_CONST_ROUNDING ) ; u [ 10 ] = _mm_add_epi32 ( v [ 10 ] , k__DCT_CONST_ROUNDING ) ; u [ 11 ] = _mm_add_epi32 ( v [ 11 ] , k__DCT_CONST_ROUNDING ) ; u [ 12 ] = _mm_add_epi32 ( v [ 12 ] , k__DCT_CONST_ROUNDING ) ; u [ 13 ] = _mm_add_epi32 ( v [ 13 ] , k__DCT_CONST_ROUNDING ) ; u [ 14 ] = _mm_add_epi32 ( v [ 14 ] , k__DCT_CONST_ROUNDING ) ; u [ 15 ] = _mm_add_epi32 ( v [ 15 ] , k__DCT_CONST_ROUNDING ) ; v [ 0 ] = _mm_srai_epi32 ( u [ 0 ] , DCT_CONST_BITS ) ; v [ 1 ] = _mm_srai_epi32 ( u [ 1 ] , DCT_CONST_BITS ) ; v [ 2 ] = _mm_srai_epi32 ( u [ 2 ] , DCT_CONST_BITS ) ; v [ 3 ] = _mm_srai_epi32 ( u [ 3 ] , DCT_CONST_BITS ) ; v [ 4 ] = _mm_srai_epi32 ( u [ 4 ] , DCT_CONST_BITS ) ; v [ 5 ] = _mm_srai_epi32 ( u [ 5 ] , DCT_CONST_BITS ) ; v [ 6 ] = _mm_srai_epi32 ( u [ 6 ] , DCT_CONST_BITS ) ; v [ 7 ] = _mm_srai_epi32 ( u [ 7 ] , DCT_CONST_BITS ) ; v [ 8 ] = _mm_srai_epi32 ( u [ 8 ] , DCT_CONST_BITS ) ; v [ 9 ] = _mm_srai_epi32 ( u [ 9 ] , DCT_CONST_BITS ) ; v [ 10 ] = _mm_srai_epi32 ( u [ 10 ] , DCT_CONST_BITS ) ; v [ 11 ] = _mm_srai_epi32 ( u [ 11 ] , DCT_CONST_BITS ) ; v [ 12 ] = _mm_srai_epi32 ( u [ 12 ] , DCT_CONST_BITS ) ; v [ 13 ] = _mm_srai_epi32 ( u [ 13 ] , DCT_CONST_BITS ) ; v [ 14 ] = _mm_srai_epi32 ( u [ 14 ] , DCT_CONST_BITS ) ; v [ 15 ] = _mm_srai_epi32 ( u [ 15 ] , DCT_CONST_BITS ) ; in [ 1 ] = _mm_packs_epi32 ( v [ 0 ] , v [ 1 ] ) ; in [ 9 ] = _mm_packs_epi32 ( v [ 2 ] , v [ 3 ] ) ; in [ 5 ] = _mm_packs_epi32 ( v [ 4 ] , v [ 5 ] ) ; in [ 13 ] = _mm_packs_epi32 ( v [ 6 ] , v [ 7 ] ) ; in [ 3 ] = _mm_packs_epi32 ( v [ 8 ] , v [ 9 ] ) ; in [ 11 ] = _mm_packs_epi32 ( v [ 10 ] , v [ 11 ] ) ; in [ 7 ] = _mm_packs_epi32 ( v [ 12 ] , v [ 13 ] ) ; in [ 15 ] = _mm_packs_epi32 ( v [ 14 ] , v [ 15 ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> = _mm_set1_epi16 ( ( int16_t ) <S2SV_ModStart> ; const __m128i k__cospi_p08_m24 <S2SV_ModEnd> = pair_set_epi16 ( <S2SV_ModStart> = pair_set_epi16 ( cospi_8_64 , - cospi_24_64 <S2SV_ModEnd> ) ; const <S2SV_ModStart> 2 ] , <S2SV_ModEnd> k__cospi_p24_p08 ) ; <S2SV_ModStart> ; v [ 3 ] = _mm_madd_epi16 ( u [ 3 <S2SV_ModEnd> ] , k__cospi_p24_p08 <S2SV_ModStart> k__cospi_p24_p08 ) ; v [ 4 ] = _mm_madd_epi16 ( u [ 2 ] , k__cospi_p08_m24 ) ; v [ 5 ] = _mm_madd_epi16 ( u [ 3 ] , k__cospi_p08_m24 ) ; v [ 6 ] = _mm_madd_epi16 ( u [ 0 ] , k__cospi_p24_p08 ) ; v [ 7 ] = _mm_madd_epi16 ( u [ 1 ] , k__cospi_p24_p08 ) ; <S2SV_ModStart> 2 ] = _mm_add_epi16 ( p [ 3 ] , t [ 2 ] ) ; s [ 3 ] = <S2SV_ModStart> ; s [ 4 ] = _mm_sub_epi16 ( p [ 4 ] , t [ 5 ] ) ; s [ 5 <S2SV_ModEnd> ] = _mm_add_epi16 <S2SV_ModStart> ] = _mm_add_epi16 <S2SV_ModEnd> ( p [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int do_check ( struct bpf_verifier_env * env ) { struct bpf_verifier_state * state ; struct bpf_insn * insns = env -> prog -> insnsi ; struct bpf_reg_state * regs ; int insn_cnt = env -> prog -> len , i ; int insn_processed = 0 ; bool do_print_state = false ; env -> prev_linfo = NULL ; state = kzalloc ( sizeof ( struct bpf_verifier_state ) , GFP_KERNEL ) ; if ( ! state ) return - ENOMEM ; state -> curframe = 0 ; <S2SV_StartBug> state -> frame [ 0 ] = kzalloc ( sizeof ( struct bpf_func_state ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! state -> frame [ 0 ] ) { kfree ( state ) ; return - ENOMEM ; } env -> cur_state = state ; init_func_state ( env , state -> frame [ 0 ] , BPF_MAIN_FUNC , 0 , 0 ) ; for ( ; ; ) { struct bpf_insn * insn ; u8 class ; int err ; if ( env -> insn_idx >= insn_cnt ) { verbose ( env , \"invalid<S2SV_blank>insn<S2SV_blank>idx<S2SV_blank>%d<S2SV_blank>insn_cnt<S2SV_blank>%d\\\\n\" , env -> insn_idx , insn_cnt ) ; return - EFAULT ; } insn = & insns [ env -> insn_idx ] ; class = BPF_CLASS ( insn -> code ) ; if ( ++ insn_processed > BPF_COMPLEXITY_LIMIT_INSNS ) { verbose ( env , \"BPF<S2SV_blank>program<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.<S2SV_blank>Processed<S2SV_blank>%d<S2SV_blank>insn\\\\n\" , insn_processed ) ; return - E2BIG ; } err = is_state_visited ( env , env -> insn_idx ) ; if ( err < 0 ) return err ; if ( err == 1 ) { if ( env -> log . level ) { if ( do_print_state ) <S2SV_StartBug> verbose ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>safe\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> env -> prev_insn_idx , env -> insn_idx ) ; <S2SV_EndBug> else verbose ( env , \"%d:<S2SV_blank>safe\\\\n\" , env -> insn_idx ) ; } goto process_bpf_exit ; } if ( signal_pending ( current ) ) return - EAGAIN ; if ( need_resched ( ) ) cond_resched ( ) ; if ( env -> log . level > 1 || ( env -> log . level && do_print_state ) ) { if ( env -> log . level > 1 ) verbose ( env , \"%d:\" , env -> insn_idx ) ; else <S2SV_StartBug> verbose ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:\" , <S2SV_EndBug> <S2SV_StartBug> env -> prev_insn_idx , env -> insn_idx ) ; <S2SV_EndBug> print_verifier_state ( env , state -> frame [ state -> curframe ] ) ; do_print_state = false ; } if ( env -> log . level ) { const struct bpf_insn_cbs cbs = { . cb_print = verbose , . private_data = env , } ; verbose_linfo ( env , env -> insn_idx , \";<S2SV_blank>\" ) ; verbose ( env , \"%d:<S2SV_blank>\" , env -> insn_idx ) ; print_bpf_insn ( & cbs , insn , env -> allow_ptr_leaks ) ; } if ( bpf_prog_is_dev_bound ( env -> prog -> aux ) ) { err = bpf_prog_offload_verify_insn ( env , env -> insn_idx , env -> prev_insn_idx ) ; if ( err ) return err ; } regs = cur_regs ( env ) ; env -> insn_aux_data [ env -> insn_idx ] . seen = true ; if ( class == BPF_ALU || class == BPF_ALU64 ) { err = check_alu_op ( env , insn ) ; if ( err ) return err ; } else if ( class == BPF_LDX ) { enum bpf_reg_type * prev_src_type , src_reg_type ; err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( env , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; src_reg_type = regs [ insn -> src_reg ] . type ; err = check_mem_access ( env , env -> insn_idx , insn -> src_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_READ , insn -> dst_reg , false ) ; if ( err ) return err ; prev_src_type = & env -> insn_aux_data [ env -> insn_idx ] . ptr_type ; if ( * prev_src_type == NOT_INIT ) { * prev_src_type = src_reg_type ; } else if ( reg_type_mismatch ( src_reg_type , * prev_src_type ) ) { verbose ( env , \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_STX ) { enum bpf_reg_type * prev_dst_type , dst_reg_type ; if ( BPF_MODE ( insn -> code ) == BPF_XADD ) { err = check_xadd ( env , env -> insn_idx , insn ) ; if ( err ) return err ; env -> insn_idx ++ ; continue ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; dst_reg_type = regs [ insn -> dst_reg ] . type ; err = check_mem_access ( env , env -> insn_idx , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , insn -> src_reg , false ) ; if ( err ) return err ; prev_dst_type = & env -> insn_aux_data [ env -> insn_idx ] . ptr_type ; if ( * prev_dst_type == NOT_INIT ) { * prev_dst_type = dst_reg_type ; } else if ( reg_type_mismatch ( dst_reg_type , * prev_dst_type ) ) { verbose ( env , \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_ST ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> src_reg != BPF_REG_0 ) { verbose ( env , \"BPF_ST<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( is_ctx_reg ( env , insn -> dst_reg ) ) { verbose ( env , \"BPF_ST<S2SV_blank>stores<S2SV_blank>into<S2SV_blank>R%d<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed\\\\n\" , insn -> dst_reg , reg_type_str [ reg_state ( env , insn -> dst_reg ) -> type ] ) ; return - EACCES ; } err = check_mem_access ( env , env -> insn_idx , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , - 1 , false ) ; if ( err ) return err ; } else if ( class == BPF_JMP ) { u8 opcode = BPF_OP ( insn -> code ) ; if ( opcode == BPF_CALL ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> off != 0 || ( insn -> src_reg != BPF_REG_0 && insn -> src_reg != BPF_PSEUDO_CALL ) || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_CALL<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( insn -> src_reg == BPF_PSEUDO_CALL ) err = check_func_call ( env , insn , & env -> insn_idx ) ; else err = check_helper_call ( env , insn -> imm , env -> insn_idx ) ; if ( err ) return err ; } else if ( opcode == BPF_JA ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_JA<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } env -> insn_idx += insn -> off + 1 ; continue ; } else if ( opcode == BPF_EXIT ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_EXIT<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( state -> curframe ) { env -> prev_insn_idx = env -> insn_idx ; err = prepare_func_exit ( env , & env -> insn_idx ) ; if ( err ) return err ; do_print_state = true ; continue ; } err = check_reference_leak ( env ) ; if ( err ) return err ; err = check_reg_arg ( env , BPF_REG_0 , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , BPF_REG_0 ) ) { verbose ( env , \"R0<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>as<S2SV_blank>return<S2SV_blank>value\\\\n\" ) ; return - EACCES ; } err = check_return_code ( env ) ; if ( err ) return err ; process_bpf_exit : err = pop_stack ( env , & env -> prev_insn_idx , & env -> insn_idx ) ; if ( err < 0 ) { if ( err != - ENOENT ) return err ; break ; } else { do_print_state = true ; continue ; } } else { err = check_cond_jmp_op ( env , insn , & env -> insn_idx ) ; if ( err ) return err ; } } else if ( class == BPF_LD ) { u8 mode = BPF_MODE ( insn -> code ) ; if ( mode == BPF_ABS || mode == BPF_IND ) { err = check_ld_abs ( env , insn ) ; if ( err ) return err ; } else if ( mode == BPF_IMM ) { err = check_ld_imm ( env , insn ) ; if ( err ) return err ; env -> insn_idx ++ ; env -> insn_aux_data [ env -> insn_idx ] . seen = true ; } else { verbose ( env , \"invalid<S2SV_blank>BPF_LD<S2SV_blank>mode\\\\n\" ) ; return - EINVAL ; } } else { verbose ( env , \"unknown<S2SV_blank>insn<S2SV_blank>class<S2SV_blank>%d\\\\n\" , class ) ; return - EINVAL ; } env -> insn_idx ++ ; } verbose ( env , \"processed<S2SV_blank>%d<S2SV_blank>insns<S2SV_blank>(limit<S2SV_blank>%d),<S2SV_blank>stack<S2SV_blank>depth<S2SV_blank>\" , insn_processed , BPF_COMPLEXITY_LIMIT_INSNS ) ; for ( i = 0 ; i < env -> subprog_cnt ; i ++ ) { u32 depth = env -> subprog_info [ i ] . stack_depth ; verbose ( env , \"%d\" , depth ) ; if ( i + 1 < env -> subprog_cnt ) verbose ( env , \"+\" ) ; } verbose ( env , \"\\\\n\" ) ; env -> prog -> aux -> stack_depth = env -> subprog_info [ 0 ] . stack_depth ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; state -> speculative = false ; state -> <S2SV_ModStart> ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d%s:<S2SV_blank>safe\\\\n\" <S2SV_ModEnd> , env -> <S2SV_ModStart> env -> insn_idx , env -> cur_state -> speculative ? \"<S2SV_blank>(speculative<S2SV_blank>execution)\" : \"\" <S2SV_ModStart> ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d%s:\" <S2SV_ModEnd> , env -> <S2SV_ModStart> env -> insn_idx , env -> cur_state -> speculative ? \"<S2SV_blank>(speculative<S2SV_blank>execution)\" : \"\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7375\n\n```\nCWE-611 void xmlParsePEReference ( xmlParserCtxtPtr ctxt ) { const xmlChar * name ; xmlEntityPtr entity = NULL ; xmlParserInputPtr input ; if ( RAW != '%' ) return ; NEXT ; name = xmlParseName ( ctxt ) ; if ( name == NULL ) { xmlFatalErrMsg ( ctxt , XML_ERR_NAME_REQUIRED , \"xmlParsePEReference:<S2SV_blank>no<S2SV_blank>name\\\\n\" ) ; return ; } if ( RAW != ';' ) { xmlFatalErr ( ctxt , XML_ERR_ENTITYREF_SEMICOL_MISSING , NULL ) ; return ; } NEXT ; ctxt -> nbentities ++ ; if ( ( ctxt -> sax != NULL ) && ( ctxt -> sax -> getParameterEntity != NULL ) ) entity = ctxt -> sax -> getParameterEntity ( ctxt -> userData , name ) ; if ( ctxt -> instate == XML_PARSER_EOF ) return ; if ( entity == NULL ) { if ( ( ctxt -> standalone == 1 ) || ( ( ctxt -> hasExternalSubset == 0 ) && ( ctxt -> hasPErefs == 0 ) ) ) { xmlFatalErrMsgStr ( ctxt , XML_ERR_UNDECLARED_ENTITY , \"PEReference:<S2SV_blank>%%%s;<S2SV_blank>not<S2SV_blank>found\\\\n\" , name ) ; } else { xmlWarningMsg ( ctxt , XML_WAR_UNDECLARED_ENTITY , \"PEReference:<S2SV_blank>%%%s;<S2SV_blank>not<S2SV_blank>found\\\\n\" , name , NULL ) ; ctxt -> valid = 0 ; } xmlParserEntityCheck ( ctxt , 0 , NULL , 0 ) ; } else { if ( ( entity -> etype != XML_INTERNAL_PARAMETER_ENTITY ) && ( entity -> etype != XML_EXTERNAL_PARAMETER_ENTITY ) ) { xmlWarningMsg ( ctxt , XML_WAR_UNDECLARED_ENTITY , \"Internal:<S2SV_blank>%%%s;<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>parameter<S2SV_blank>entity\\\\n\" , name , NULL ) ; } else if ( ctxt -> input -> free != deallocblankswrapper ) { input = xmlNewBlanksWrapperInputStream ( ctxt , entity ) ; if ( xmlPushInput ( ctxt , input ) < 0 ) return ; } else { <S2SV_StartBug> input = xmlNewEntityInputStream ( ctxt , entity ) ; <S2SV_EndBug> if ( xmlPushInput ( ctxt , input ) < 0 ) return ; if ( ( entity -> etype == XML_EXTERNAL_PARAMETER_ENTITY ) && ( CMP5 ( CUR_PTR , '<' , '?' , 'x' , 'm' , 'l' ) ) && ( IS_BLANK_CH ( NXT ( 5 ) ) ) ) { xmlParseTextDecl ( ctxt ) ; if ( ctxt -> errNo == XML_ERR_UNSUPPORTED_ENCODING ) { xmlHaltParser ( ctxt ) ; return ; } } } } ctxt -> hasPErefs = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { if ( ( entity -> etype == XML_EXTERNAL_PARAMETER_ENTITY ) && ( ( ctxt -> options & XML_PARSE_NOENT ) == 0 ) && ( ( ctxt -> options & XML_PARSE_DTDVALID ) == 0 ) && ( ( ctxt -> options & XML_PARSE_DTDLOAD ) == 0 ) && ( ( ctxt -> options & XML_PARSE_DTDATTR ) == 0 ) && ( ctxt -> replaceEntities == 0 ) && ( ctxt -> validate == 0 ) ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void dist_block ( int plane , int block , TX_SIZE tx_size , <S2SV_EndBug> <S2SV_StartBug> struct rdcost_block_args * args ) { <S2SV_EndBug> <S2SV_StartBug> const int ss_txfrm_size = tx_size << 1 ; <S2SV_EndBug> MACROBLOCK * const x = args -> x ; MACROBLOCKD * const xd = & x -> e_mbd ; const struct macroblock_plane * const p = & x -> plane [ plane ] ; const struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; int64_t this_sse ; int shift = tx_size == TX_32X32 ? 0 : 2 ; <S2SV_StartBug> int16_t * const coeff = BLOCK_OFFSET ( p -> coeff , block ) ; <S2SV_EndBug> <S2SV_StartBug> int16_t * const dqcoeff = BLOCK_OFFSET ( pd -> dqcoeff , block ) ; <S2SV_EndBug> <S2SV_StartBug> args -> dist = vp9_block_error ( coeff , dqcoeff , 16 << ss_txfrm_size , <S2SV_EndBug> <S2SV_StartBug> & this_sse ) >> shift ; <S2SV_EndBug> args -> sse = this_sse >> shift ; if ( x -> skip_encode && ! is_inter_block ( & xd -> mi [ 0 ] -> mbmi ) ) { int64_t p = ( pd -> dequant [ 1 ] * pd -> dequant [ 1 ] * <S2SV_StartBug> ( 1 << ss_txfrm_size ) ) >> ( shift + 2 ) ; <S2SV_EndBug> args -> dist += ( p >> 4 ) ; <S2SV_StartBug> args -> sse += p ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void dist_block ( MACROBLOCK * x , <S2SV_ModStart> TX_SIZE tx_size , int64_t * out_dist , int64_t * out_sse <S2SV_ModEnd> ) { const <S2SV_ModStart> tx_size << 1 <S2SV_ModEnd> ; MACROBLOCKD * <S2SV_ModStart> : 2 ; tran_low_t <S2SV_ModEnd> * const coeff <S2SV_ModStart> block ) ; tran_low_t <S2SV_ModEnd> * const dqcoeff <S2SV_ModStart> block ) ; # if CONFIG_VP9_HIGHBITDEPTH const int bd = ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) ? xd -> bd : 8 ; * out_dist = vp9_highbd_block_error <S2SV_ModEnd> ( coeff , <S2SV_ModStart> , & this_sse , bd ) >> shift ; # else * out_dist = vp9_block_error ( coeff , dqcoeff , 16 << ss_txfrm_size , & this_sse ) >> shift ; # endif * out_sse <S2SV_ModEnd> = this_sse >> <S2SV_ModStart> ) ) >> # if CONFIG_VP9_HIGHBITDEPTH <S2SV_ModStart> shift + 2 + ( bd - 8 ) * 2 ) ; # else ( shift + 2 ) ; # endif * out_dist <S2SV_ModEnd> += ( p <S2SV_ModStart> 4 ) ; * out_sse <S2SV_ModEnd> += p ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999012\n\n```\nCWE-835 static int read_part_of_packet ( AVFormatContext * s , int64_t * pts , int * len , int * strid , int read_packet ) { AVIOContext * pb = s -> pb ; PVAContext * pvactx = s -> priv_data ; int syncword , streamid , reserved , flags , length , pts_flag ; int64_t pva_pts = AV_NOPTS_VALUE , startpos ; int ret ; recover : startpos = avio_tell ( pb ) ; syncword = avio_rb16 ( pb ) ; streamid = avio_r8 ( pb ) ; avio_r8 ( pb ) ; reserved = avio_r8 ( pb ) ; flags = avio_r8 ( pb ) ; length = avio_rb16 ( pb ) ; pts_flag = flags & 0x10 ; if ( syncword != PVA_MAGIC ) { pva_log ( s , AV_LOG_ERROR , \"invalid<S2SV_blank>syncword\\\\n\" ) ; return AVERROR ( EIO ) ; } if ( streamid != PVA_VIDEO_PAYLOAD && streamid != PVA_AUDIO_PAYLOAD ) { pva_log ( s , AV_LOG_ERROR , \"invalid<S2SV_blank>streamid\\\\n\" ) ; return AVERROR ( EIO ) ; } if ( reserved != 0x55 ) { pva_log ( s , AV_LOG_WARNING , \"expected<S2SV_blank>reserved<S2SV_blank>byte<S2SV_blank>to<S2SV_blank>be<S2SV_blank>0x55\\\\n\" ) ; } if ( length > PVA_MAX_PAYLOAD_LENGTH ) { pva_log ( s , AV_LOG_ERROR , \"invalid<S2SV_blank>payload<S2SV_blank>length<S2SV_blank>%u\\\\n\" , length ) ; return AVERROR ( EIO ) ; } if ( streamid == PVA_VIDEO_PAYLOAD && pts_flag ) { pva_pts = avio_rb32 ( pb ) ; length -= 4 ; } else if ( streamid == PVA_AUDIO_PAYLOAD ) { if ( ! pvactx -> continue_pes ) { int pes_signal , pes_header_data_length , pes_packet_length , pes_flags ; unsigned char pes_header_data [ 256 ] ; pes_signal = avio_rb24 ( pb ) ; avio_r8 ( pb ) ; pes_packet_length = avio_rb16 ( pb ) ; pes_flags = avio_rb16 ( pb ) ; pes_header_data_length = avio_r8 ( pb ) ; <S2SV_StartBug> if ( pes_signal != 1 || pes_header_data_length == 0 ) { <S2SV_EndBug> pva_log ( s , AV_LOG_WARNING , \"expected<S2SV_blank>non<S2SV_blank>empty<S2SV_blank>signaled<S2SV_blank>PES<S2SV_blank>packet,<S2SV_blank>\" \"trying<S2SV_blank>to<S2SV_blank>recover\\\\n\" ) ; avio_skip ( pb , length - 9 ) ; if ( ! read_packet ) return AVERROR ( EIO ) ; goto recover ; } ret = avio_read ( pb , pes_header_data , pes_header_data_length ) ; if ( ret != pes_header_data_length ) return ret < 0 ? ret : AVERROR_INVALIDDATA ; length -= 9 + pes_header_data_length ; pes_packet_length -= 3 + pes_header_data_length ; pvactx -> continue_pes = pes_packet_length ; if ( pes_flags & 0x80 && ( pes_header_data [ 0 ] & 0xf0 ) == 0x20 ) { if ( pes_header_data_length < 5 ) { pva_log ( s , AV_LOG_ERROR , \"header<S2SV_blank>too<S2SV_blank>short\\\\n\" ) ; avio_skip ( pb , length ) ; return AVERROR_INVALIDDATA ; } pva_pts = ff_parse_pes_pts ( pes_header_data ) ; } } pvactx -> continue_pes -= length ; if ( pvactx -> continue_pes < 0 ) { pva_log ( s , AV_LOG_WARNING , \"audio<S2SV_blank>data<S2SV_blank>corruption\\\\n\" ) ; pvactx -> continue_pes = 0 ; } } if ( pva_pts != AV_NOPTS_VALUE ) av_add_index_entry ( s -> streams [ streamid - 1 ] , startpos , pva_pts , 0 , 0 , AVINDEX_KEYFRAME ) ; * pts = pva_pts ; * len = length ; * strid = streamid ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( avio_feof ( pb ) ) { return AVERROR_EOF ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6059\n\n```\nCWE-20 int oidc_handle_redirect_uri_request ( request_rec * r , oidc_cfg * c , oidc_session_t * session ) { if ( oidc_proto_is_redirect_authorization_response ( r , c ) ) { return oidc_handle_redirect_authorization_response ( r , c , session ) ; } else if ( oidc_proto_is_post_authorization_response ( r , c ) ) { return oidc_handle_post_authorization_response ( r , c , session ) ; } else if ( oidc_is_discovery_response ( r , c ) ) { return oidc_handle_discovery_response ( r , c ) ; } else if ( oidc_util_request_has_parameter ( r , \"logout\" ) ) { return oidc_handle_logout ( r , c , session ) ; } else if ( oidc_util_request_has_parameter ( r , \"jwks\" ) ) { return oidc_handle_jwks ( r , c ) ; } else if ( oidc_util_request_has_parameter ( r , \"session\" ) ) { return oidc_handle_session_management ( r , c , session ) ; } else if ( oidc_util_request_has_parameter ( r , \"refresh\" ) ) { return oidc_handle_refresh_token_request ( r , c , session ) ; } else if ( oidc_util_request_has_parameter ( r , \"request_uri\" ) ) { return oidc_handle_request_uri ( r , c ) ; } else if ( oidc_util_request_has_parameter ( r , \"remove_at_cache\" ) ) { return oidc_handle_remove_at_cache ( r , c ) ; } else if ( ( r -> args == NULL ) || ( apr_strnatcmp ( r -> args , \"\" ) == 0 ) ) { return oidc_proto_javascript_implicit ( r , c ) ; } if ( oidc_util_request_has_parameter ( r , \"error\" ) ) { oidc_handle_redirect_authorization_response ( r , c , session ) ; } return oidc_util_html_send_error ( r , c -> error_template , \"Invalid<S2SV_blank>Request\" , apr_psprintf ( r -> pool , <S2SV_StartBug> \"The<S2SV_blank>OpenID<S2SV_blank>Connect<S2SV_blank>callback<S2SV_blank>URL<S2SV_blank>received<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>request:<S2SV_blank>%s\" , <S2SV_EndBug> r -> args ) , HTTP_INTERNAL_SERVER_ERROR ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pool , \"The<S2SV_blank>OpenID<S2SV_blank>Connect<S2SV_blank>callback<S2SV_blank>URL<S2SV_blank>received<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>request\" ) , <S2SV_ModEnd> HTTP_INTERNAL_SERVER_ERROR ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3820\n\n```\nCWE-119 WORD32 ih264d_video_decode ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ( dec_hdl -> pv_codec_handle ) ; WORD32 i4_err_status = 0 ; UWORD8 * pu1_buf = NULL ; WORD32 buflen ; UWORD32 u4_max_ofst , u4_length_of_start_code = 0 ; UWORD32 bytes_consumed = 0 ; UWORD32 cur_slice_is_nonref = 0 ; UWORD32 u4_next_is_aud ; UWORD32 u4_first_start_code_found = 0 ; WORD32 ret = 0 , api_ret_value = IV_SUCCESS ; WORD32 header_data_left = 0 , frame_data_left = 0 ; UWORD8 * pu1_bitstrm_buf ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; ithread_set_name ( ( void * ) \"Parse_thread\" ) ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size ; u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } ps_dec -> pv_dec_out = ps_dec_op ; if ( ps_dec -> init_done != 1 ) { return IV_FAIL ; } DATA_SYNC ( ) ; if ( 0 == ps_dec -> u1_flushfrm ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } ps_dec -> u1_pic_decode_done = 0 ; ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec -> ps_out_buffer = NULL ; if ( ps_dec_ip -> u4_size >= offsetof ( ivd_video_decode_ip_t , s_out_buffer ) ) ps_dec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 0 ; ps_dec -> s_disp_op . u4_error_code = 1 ; ps_dec -> u4_fmt_conv_num_rows = FMT_CONV_NUM_ROWS ; if ( 0 == ps_dec -> u4_share_disp_buf && ps_dec -> i4_decode_header == 0 ) { UWORD32 i ; if ( ps_dec -> ps_out_buffer -> u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec -> ps_out_buffer -> u4_num_bufs ; i ++ ) { if ( ps_dec -> ps_out_buffer -> pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec -> ps_out_buffer -> u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } if ( ps_dec -> u4_total_frames_decoded >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code = ERROR_FRAME_LIMIT_OVER ; return IV_FAIL ; } ps_dec -> u4_ts = ps_dec_ip -> u4_ts ; ps_dec_op -> u4_error_code = 0 ; ps_dec_op -> e_pic_type = - 1 ; ps_dec_op -> u4_output_present = 0 ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; { if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } } ps_dec -> u4_slice_start_code_found = 0 ; if ( ps_dec -> u1_init_dec_flag == 1 && ps_dec -> u4_share_disp_buf == 1 && ps_dec -> u1_flushfrm == 0 ) { UWORD32 i ; WORD32 disp_avail = 0 , free_id ; for ( i = 0 ; i < ps_dec -> u1_pic_bufs ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_mapping [ i ] || 1 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) { disp_avail = 1 ; break ; } } if ( 0 == disp_avail ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } while ( 1 ) { pic_buffer_t * ps_pic_buf ; ps_pic_buf = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & free_id ) ; if ( ps_pic_buf == NULL ) { UWORD32 i , display_queued = 0 ; for ( i = 0 ; i < ( MAX_DISP_BUFS_NEW ) ; i ++ ) { if ( 0 != ps_dec -> u4_disp_buf_mapping [ i ] ) { display_queued = 1 ; break ; } } if ( 1 == display_queued ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } } else { if ( 1 == ps_dec -> u4_disp_buf_mapping [ free_id ] ) { ih264_buf_mgr_set_status ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; } else { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; break ; } } } } if ( ps_dec -> u1_flushfrm && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; ps_dec -> u4_output_present = 1 ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; ps_dec_op -> u4_new_seq = 0 ; ps_dec_op -> u4_output_present = ps_dec -> u4_output_present ; ps_dec_op -> u4_progressive_frame_flag = ps_dec -> s_disp_op . u4_progressive_frame_flag ; ps_dec_op -> e_output_format = ps_dec -> s_disp_op . e_output_format ; ps_dec_op -> s_disp_frm_buf = ps_dec -> s_disp_op . s_disp_frm_buf ; ps_dec_op -> e4_fld_type = ps_dec -> s_disp_op . e4_fld_type ; ps_dec_op -> u4_ts = ps_dec -> s_disp_op . u4_ts ; ps_dec_op -> u4_disp_buf_id = ps_dec -> s_disp_op . u4_disp_buf_id ; ps_dec_op -> u4_is_ref_flag = - 1 ; ps_dec_op -> e_pic_type = IV_NA_FRAME ; ps_dec_op -> u4_frame_decoded_flag = 0 ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { return ( IV_SUCCESS ) ; } else return ( IV_FAIL ) ; } if ( ps_dec -> u1_res_changed == 1 ) { ih264d_init_decoder ( ps_dec ) ; } ps_dec -> u4_prev_nal_skipped = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> cur_dec_mb_num = 0 ; ps_dec -> cur_recon_mb_num = 0 ; ps_dec -> u4_first_slice_in_pic = 2 ; ps_dec -> u1_slice_header_done = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> u4_dec_thread_created = 0 ; ps_dec -> u4_bs_deblk_thread_created = 0 ; <S2SV_StartBug> ps_dec -> u4_cur_bs_mb_num = 0 ; <S2SV_EndBug> DEBUG_THREADS_PRINTF ( \"<S2SV_blank>Starting<S2SV_blank>process<S2SV_blank>call\\\\n\" ) ; ps_dec -> u4_pic_buf_got = 0 ; do { WORD32 buf_size ; pu1_buf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer + ps_dec_op -> u4_num_bytes_consumed ; u4_max_ofst = ps_dec_ip -> u4_num_Bytes - ps_dec_op -> u4_num_bytes_consumed ; if ( ( NULL == ps_dec -> pu1_bits_buf_dynamic ) && ( ps_dec -> i4_header_decoded & 1 ) ) { WORD32 size ; void * pv_buf ; void * pv_mem_ctxt = ps_dec -> pv_mem_ctxt ; size = MAX ( 256000 , ps_dec -> u2_pic_wd * ps_dec -> u2_pic_ht * 3 / 2 ) ; pv_buf = ps_dec -> pf_aligned_alloc ( pv_mem_ctxt , 128 , size ) ; RETURN_IF ( ( NULL == pv_buf ) , IV_FAIL ) ; ps_dec -> pu1_bits_buf_dynamic = pv_buf ; ps_dec -> u4_dynamic_bits_buf_size = size ; } if ( ps_dec -> pu1_bits_buf_dynamic ) { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_dynamic ; buf_size = ps_dec -> u4_dynamic_bits_buf_size ; } else { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_static ; buf_size = ps_dec -> u4_static_bits_buf_size ; } u4_next_is_aud = 0 ; buflen = ih264d_find_start_code ( pu1_buf , 0 , u4_max_ofst , & u4_length_of_start_code , & u4_next_is_aud ) ; if ( buflen == - 1 ) buflen = 0 ; buflen = MIN ( buflen , buf_size ) ; bytes_consumed = buflen + u4_length_of_start_code ; ps_dec_op -> u4_num_bytes_consumed += bytes_consumed ; { UWORD8 u1_firstbyte , u1_nal_ref_idc ; if ( ps_dec -> i4_app_skip_mode == IVD_SKIP_B ) { u1_firstbyte = * ( pu1_buf + u4_length_of_start_code ) ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_firstbyte ) ) ; if ( u1_nal_ref_idc == 0 ) { cur_slice_is_nonref = 1 ; continue ; } else { if ( 1 == cur_slice_is_nonref ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> e_pic_type = IV_B_FRAME ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } } } } if ( buflen ) { memcpy ( pu1_bitstrm_buf , pu1_buf + u4_length_of_start_code , buflen ) ; if ( ( buflen + 8 ) < buf_size ) { memset ( pu1_bitstrm_buf + buflen , 0 , 8 ) ; } u4_first_start_code_found = 1 ; } else { if ( u4_first_start_code_found == 0 ) { ps_dec -> i4_error_code = ERROR_START_CODE_NOT_FOUND ; ps_dec_op -> u4_error_code |= 1 << IVD_INSUFFICIENTDATA ; if ( ps_dec -> u4_pic_buf_got == 0 ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; ps_dec_op -> u4_error_code = ps_dec -> i4_error_code ; ps_dec_op -> u4_frame_decoded_flag = 0 ; return ( IV_FAIL ) ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } else { frame_data_left = 0 ; continue ; } } ps_dec -> u4_return_to_app = 0 ; ret = ih264d_parse_nal_unit ( dec_hdl , ps_dec_op , pu1_bitstrm_buf , buflen ) ; if ( ret != OK ) { UWORD32 error = ih264d_map_error ( ret ) ; ps_dec_op -> u4_error_code = error | ret ; api_ret_value = IV_FAIL ; if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) ) { break ; } if ( ( ret == ERROR_INCOMPLETE_FRAME ) || ( ret == ERROR_DANGLING_FIELD_IN_PIC ) ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; api_ret_value = IV_FAIL ; break ; } if ( ret == ERROR_IN_LAST_SLICE_OF_PIC ) { api_ret_value = IV_FAIL ; break ; } } if ( ps_dec -> u4_return_to_app ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } header_data_left = ( ( ps_dec -> i4_decode_header == 1 ) && ( ps_dec -> i4_header_decoded != 3 ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; frame_data_left = ( ( ( ps_dec -> i4_decode_header == 0 ) && ( ( ps_dec -> u1_pic_decode_done == 0 ) || ( u4_next_is_aud == 1 ) ) ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; } while ( ( header_data_left == 1 ) || ( frame_data_left == 1 ) ) ; if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ret != IVD_MEM_ALLOC_FAILED ) && ps_dec -> u2_total_mbs_coded < ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { WORD32 num_mb_skipped ; WORD32 prev_slice_err ; pocstruct_t temp_poc ; WORD32 ret1 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u4_pic_buf_got == 0 ) ) prev_slice_err = 1 ; else prev_slice_err = 2 ; ret1 = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL , ps_dec -> ps_cur_slice -> u2_frame_num , & temp_poc , prev_slice_err ) ; if ( ( ret1 == ERROR_UNAVAIL_PICBUF_T ) || ( ret1 == ERROR_UNAVAIL_MVBUF_T ) ) { return IV_FAIL ; } } if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) ) { ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } if ( ret == IVD_RES_CHANGED ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; } return IV_FAIL ; } if ( ps_dec -> u1_separate_parse ) { if ( ps_dec -> u4_num_cores == 2 ) { if ( ( ps_dec -> u4_nmb_deblk == 0 ) && ( ps_dec -> u4_start_recon_deblk == 1 ) && ( ps_dec -> ps_cur_sps -> u1_mb_aff_flag == 0 ) ) { UWORD32 u4_num_mbs , u4_max_addr ; tfr_ctxt_t s_tfr_ctxt ; tfr_ctxt_t * ps_tfr_cxt = & s_tfr_ctxt ; pad_mgr_t * ps_pad_mgr = & ps_dec -> s_pad_mgr ; u4_max_addr = ( ps_dec -> u2_frm_wd_in_mbs * ps_dec -> u2_frm_ht_in_mbs ) - 1 ; ps_dec -> u4_cur_bs_mb_num = u4_max_addr + 1 ; ih264d_init_deblk_tfr_ctxt ( ps_dec , ps_pad_mgr , ps_tfr_cxt , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; u4_num_mbs = u4_max_addr - ps_dec -> u4_cur_deblk_mb_num + 1 ; DEBUG_PERF_PRINTF ( \"mbs<S2SV_blank>left<S2SV_blank>for<S2SV_blank>deblocking=<S2SV_blank>%d<S2SV_blank>\\\\n\" , u4_num_mbs ) ; if ( u4_num_mbs != 0 ) ih264d_check_mb_map_deblk ( ps_dec , u4_num_mbs , ps_tfr_cxt , 1 ) ; ps_dec -> u4_start_recon_deblk = 0 ; } } ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } } DATA_SYNC ( ) ; if ( ( ps_dec_op -> u4_error_code & 0xff ) != ERROR_DYNAMIC_RESOLUTION_NOT_SUPPORTED ) { ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; } if ( ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> i4_decode_header == 1 && ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> u4_prev_nal_skipped ) { ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ERROR_DANGLING_FIELD_IN_PIC != i4_err_status ) ) { if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) { if ( 1 == ps_dec -> ps_cur_slice -> u1_bottom_field_flag ) { ps_dec -> u1_top_bottom_decoded |= BOT_FIELD_ONLY ; } else { ps_dec -> u1_top_bottom_decoded |= TOP_FIELD_ONLY ; } } if ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) { ret = ih264d_deblock_display ( ps_dec ) ; if ( ret != 0 ) { return IV_FAIL ; } } if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_dec -> i4_frametype = IV_IDR_FRAME ; } else if ( ps_dec -> i4_pic_type == B_SLICE ) { ps_dec -> i4_frametype = IV_B_FRAME ; } else if ( ps_dec -> i4_pic_type == P_SLICE ) { ps_dec -> i4_frametype = IV_P_FRAME ; } else if ( ps_dec -> i4_pic_type == I_SLICE ) { ps_dec -> i4_frametype = IV_I_FRAME ; } else { H264_DEC_DEBUG_PRINT ( \"Shouldn\\'t<S2SV_blank>come<S2SV_blank>here\\\\n\" ) ; } ps_dec -> i4_content_type = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded + 2 ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded - ps_dec -> ps_cur_slice -> u1_field_pic_flag ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } { if ( ( IVD_DECODE_FRAME_OUT == ps_dec -> e_frm_out_mode ) && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 1 ; } } ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; if ( ps_dec -> u4_output_present && ( ps_dec -> u4_fmt_conv_cur_row < ps_dec -> s_disp_frame_info . u4_y_ht ) ) { ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht - ps_dec -> u4_fmt_conv_cur_row ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; } if ( ps_dec -> i4_decode_header == 1 && ( ps_dec -> i4_header_decoded & 1 ) == 1 ) { ps_dec_op -> u4_progressive_frame_flag = 1 ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { if ( ( 0 == ps_dec -> ps_sps -> u1_frame_mbs_only_flag ) && ( 0 == ps_dec -> ps_sps -> u1_mb_aff_flag ) ) ps_dec_op -> u4_progressive_frame_flag = 0 ; } } DATA_SYNC ( ) ; H264_DEC_DEBUG_PRINT ( \"The<S2SV_blank>num<S2SV_blank>bytes<S2SV_blank>consumed:<S2SV_blank>%d\\\\n\" , ps_dec_op -> u4_num_bytes_consumed ) ; return api_ret_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ps_dec -> u4_cur_bs_mb_num = 0 ; ps_dec -> u4_start_recon_deblk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 static int unix_attach_fds ( struct scm_cookie * scm , struct sk_buff * skb ) { int i ; unsigned char max_level = 0 ; int unix_sock_count = 0 ; if ( too_many_unix_fds ( current ) ) return - ETOOMANYREFS ; for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) { struct sock * sk = unix_get_socket ( scm -> fp -> fp [ i ] ) ; if ( sk ) { unix_sock_count ++ ; max_level = max ( max_level , unix_sk ( sk ) -> recursion_level ) ; } } if ( unlikely ( max_level > MAX_RECURSION_LEVEL ) ) return - ETOOMANYREFS ; UNIXCB ( skb ) . fp = scm_fp_dup ( scm -> fp ) ; if ( ! UNIXCB ( skb ) . fp ) return - ENOMEM ; for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) <S2SV_StartBug> unix_inflight ( scm -> fp -> fp [ i ] ) ; <S2SV_EndBug> return max_level ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> fp -> user , scm -> fp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 <S2SV_StartBug> static int cipso_v4_delopt ( struct ip_options * * opt_ptr ) <S2SV_EndBug> { int hdr_delta = 0 ; <S2SV_StartBug> struct ip_options * opt = * opt_ptr ; <S2SV_EndBug> <S2SV_StartBug> if ( opt -> srr || opt -> rr || opt -> ts || opt -> router_alert ) { <S2SV_EndBug> u8 cipso_len ; u8 cipso_off ; unsigned char * cipso_ptr ; int iter ; int optlen_new ; <S2SV_StartBug> cipso_off = opt -> cipso - sizeof ( struct iphdr ) ; <S2SV_EndBug> <S2SV_StartBug> cipso_ptr = & opt -> __data [ cipso_off ] ; <S2SV_EndBug> cipso_len = cipso_ptr [ 1 ] ; <S2SV_StartBug> if ( opt -> srr > opt -> cipso ) <S2SV_EndBug> opt -> srr -= cipso_len ; <S2SV_StartBug> if ( opt -> rr > opt -> cipso ) <S2SV_EndBug> opt -> rr -= cipso_len ; <S2SV_StartBug> if ( opt -> ts > opt -> cipso ) <S2SV_EndBug> opt -> ts -= cipso_len ; <S2SV_StartBug> if ( opt -> router_alert > opt -> cipso ) <S2SV_EndBug> opt -> router_alert -= cipso_len ; <S2SV_StartBug> opt -> cipso = 0 ; <S2SV_EndBug> memmove ( cipso_ptr , cipso_ptr + cipso_len , <S2SV_StartBug> opt -> optlen - cipso_off - cipso_len ) ; <S2SV_EndBug> iter = 0 ; optlen_new = 0 ; <S2SV_StartBug> while ( iter < opt -> optlen ) <S2SV_EndBug> if ( opt -> __data [ iter ] != IPOPT_NOP ) { <S2SV_StartBug> iter += opt -> __data [ iter + 1 ] ; <S2SV_EndBug> optlen_new = iter ; } else iter ++ ; <S2SV_StartBug> hdr_delta = opt -> optlen ; <S2SV_EndBug> opt -> optlen = ( optlen_new + 3 ) & ~ 3 ; <S2SV_StartBug> hdr_delta -= opt -> optlen ; <S2SV_EndBug> } else { * opt_ptr = NULL ; <S2SV_StartBug> hdr_delta = opt -> optlen ; <S2SV_EndBug> kfree ( opt ) ; } return hdr_delta ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cipso_v4_delopt ( struct ip_options_rcu <S2SV_ModEnd> * * opt_ptr <S2SV_ModStart> 0 ; struct ip_options_rcu <S2SV_ModEnd> * opt = <S2SV_ModStart> ( opt -> opt . <S2SV_ModStart> || opt -> opt . <S2SV_ModStart> || opt -> opt . <S2SV_ModStart> || opt -> opt . <S2SV_ModStart> = opt -> opt . <S2SV_ModStart> & opt -> opt . <S2SV_ModStart> ( opt -> opt . <S2SV_ModStart> > opt -> opt . cipso ) opt -> opt . <S2SV_ModEnd> srr -= cipso_len <S2SV_ModStart> ( opt -> opt . <S2SV_ModStart> > opt -> opt . cipso ) opt -> opt . <S2SV_ModEnd> rr -= cipso_len <S2SV_ModStart> ( opt -> opt . <S2SV_ModStart> > opt -> opt . cipso ) opt -> opt . <S2SV_ModEnd> ts -= cipso_len <S2SV_ModStart> ( opt -> opt . <S2SV_ModStart> > opt -> opt . cipso ) opt -> opt . <S2SV_ModEnd> router_alert -= cipso_len <S2SV_ModStart> ; opt -> opt . <S2SV_ModStart> , opt -> opt . <S2SV_ModStart> < opt -> opt . optlen ) if ( opt -> opt . <S2SV_ModEnd> __data [ iter <S2SV_ModStart> += opt -> opt . <S2SV_ModStart> = opt -> opt . optlen ; opt -> opt . <S2SV_ModEnd> optlen = ( <S2SV_ModStart> -= opt -> opt . <S2SV_ModStart> = opt -> opt . optlen ; call_rcu ( & opt -> rcu , opt_kfree_rcu <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6187\n\n```\nCWE-119 static int apparmor_setprocattr ( struct task_struct * task , char * name , void * value , size_t size ) { struct common_audit_data sa ; struct apparmor_audit_data aad = { 0 , } ; <S2SV_StartBug> char * command , * args = value ; <S2SV_EndBug> size_t arg_size ; int error ; if ( size == 0 ) <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> if ( args [ size - 1 ] != '\\\\0' ) { <S2SV_StartBug> if ( size == PAGE_SIZE ) <S2SV_EndBug> <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> <S2SV_StartBug> args [ size ] = '\\\\0' ; <S2SV_EndBug> } if ( current != task ) return - EACCES ; args = value ; args = strim ( args ) ; command = strsep ( & args , \"<S2SV_blank>\" ) ; if ( ! args ) return - EINVAL ; args = skip_spaces ( args ) ; if ( ! * args ) return - EINVAL ; arg_size = size - ( args - ( char * ) value ) ; <S2SV_StartBug> if ( strcmp ( name , \"current\" ) == 0 ) { <S2SV_EndBug> if ( strcmp ( command , \"changehat\" ) == 0 ) { error = aa_setprocattr_changehat ( args , arg_size , ! AA_DO_TEST ) ; <S2SV_StartBug> } else if ( strcmp ( command , \"permhat\" ) == 0 ) { <S2SV_EndBug> error = aa_setprocattr_changehat ( args , arg_size , AA_DO_TEST ) ; } else if ( strcmp ( command , \"changeprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , ! AA_DO_TEST ) ; } else if ( strcmp ( command , \"permprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , AA_DO_TEST ) ; } else goto fail ; <S2SV_StartBug> } else if ( strcmp ( name , \"exec\" ) == 0 ) { <S2SV_EndBug> if ( strcmp ( command , \"exec\" ) == 0 ) error = aa_setprocattr_changeprofile ( args , AA_ONEXEC , ! AA_DO_TEST ) ; else goto fail ; <S2SV_StartBug> } else <S2SV_EndBug> return - EINVAL ; if ( ! error ) error = size ; return error ; fail : sa . type = LSM_AUDIT_DATA_NONE ; sa . aad = & aad ; aad . profile = aa_current_profile ( ) ; aad . op = OP_SETPROCATTR ; aad . info = name ; <S2SV_StartBug> aad . error = - EINVAL ; <S2SV_EndBug> aa_audit_msg ( AUDIT_APPARMOR_DENIED , & sa , NULL ) ; <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> command , * largs = NULL , * <S2SV_ModStart> return - EINVAL ; if ( current != task ) return - EACCES <S2SV_ModStart> '\\\\0' ) { largs = args = kmalloc ( size + 1 , GFP_KERNEL ) ; if ( ! args <S2SV_ModEnd> ) return - <S2SV_ModStart> ) return - ENOMEM ; memcpy ( args , value , size ) ; args [ size ] = '\\\\0' ; } error = - <S2SV_ModStart> EINVAL ; args = strim ( args ) ; command = strsep ( & args , \"<S2SV_blank>\" ) ; if ( ! args ) goto out ; args = skip_spaces ( args ) ; if ( ! * args ) goto out ; arg_size = size - ( args - ( char * ) value ) ; if ( strcmp ( name , \"current\" ) == 0 ) { if ( strcmp ( command , \"changehat\" ) == 0 ) { error = aa_setprocattr_changehat ( args , arg_size , ! AA_DO_TEST ) ; } else if ( strcmp ( command , \"permhat\" ) == 0 ) { error = aa_setprocattr_changehat ( args , arg_size , AA_DO_TEST ) ; } else if ( strcmp ( command , \"changeprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , ! AA_DO_TEST ) ; } else if ( strcmp ( command , \"permprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , AA_DO_TEST ) ; } else goto fail ; } else <S2SV_ModEnd> if ( strcmp <S2SV_ModStart> ( name , \"exec\" ) == 0 ) { if ( strcmp ( command , \"exec\" ) == 0 ) error = aa_setprocattr_changeprofile ( args , AA_ONEXEC <S2SV_ModEnd> , ! AA_DO_TEST <S2SV_ModStart> AA_DO_TEST ) ; <S2SV_ModEnd> else goto fail <S2SV_ModStart> ; } else <S2SV_ModEnd> goto fail ; <S2SV_ModStart> goto fail ; if ( ! error ) error = size ; out : kfree ( largs ) <S2SV_ModEnd> ; return error <S2SV_ModStart> . error = error = <S2SV_ModStart> NULL ) ; goto out <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int llc_ui_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sockaddr_llc * uaddr = ( struct sockaddr_llc * ) msg -> msg_name ; const int nonblock = flags & MSG_DONTWAIT ; struct sk_buff * skb = NULL ; struct sock * sk = sock -> sk ; struct llc_sock * llc = llc_sk ( sk ) ; unsigned long cpu_flags ; size_t copied = 0 ; u32 peek_seq = 0 ; u32 * seq ; unsigned long used ; int target ; <S2SV_StartBug> long timeo ; <S2SV_EndBug> msg -> msg_namelen = 0 ; lock_sock ( sk ) ; copied = - ENOTCONN ; if ( unlikely ( sk -> sk_type == SOCK_STREAM && sk -> sk_state == TCP_LISTEN ) ) goto out ; timeo = sock_rcvtimeo ( sk , nonblock ) ; seq = & llc -> copied_seq ; if ( flags & MSG_PEEK ) { peek_seq = llc -> copied_seq ; seq = & peek_seq ; } target = sock_rcvlowat ( sk , flags & MSG_WAITALL , len ) ; copied = 0 ; do { u32 offset ; if ( signal_pending ( current ) ) { if ( copied ) break ; copied = timeo ? sock_intr_errno ( timeo ) : - EAGAIN ; break ; } skb = skb_peek ( & sk -> sk_receive_queue ) ; if ( skb ) { offset = * seq ; goto found_ok_skb ; } if ( copied >= target && ! sk -> sk_backlog . tail ) break ; if ( copied ) { if ( sk -> sk_err || sk -> sk_state == TCP_CLOSE || ( sk -> sk_shutdown & RCV_SHUTDOWN ) || ! timeo || ( flags & MSG_PEEK ) ) break ; } else { if ( sock_flag ( sk , SOCK_DONE ) ) break ; if ( sk -> sk_err ) { copied = sock_error ( sk ) ; break ; } if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; if ( sk -> sk_type == SOCK_STREAM && sk -> sk_state == TCP_CLOSE ) { if ( ! sock_flag ( sk , SOCK_DONE ) ) { copied = - ENOTCONN ; break ; } break ; } if ( ! timeo ) { copied = - EAGAIN ; break ; } } if ( copied >= target ) { release_sock ( sk ) ; lock_sock ( sk ) ; } else sk_wait_data ( sk , & timeo ) ; if ( ( flags & MSG_PEEK ) && peek_seq != llc -> copied_seq ) { net_dbg_ratelimited ( \"LLC(%s:%d):<S2SV_blank>Application<S2SV_blank>bug,<S2SV_blank>race<S2SV_blank>in<S2SV_blank>MSG_PEEK\\\\n\" , current -> comm , task_pid_nr ( current ) ) ; peek_seq = llc -> copied_seq ; } continue ; found_ok_skb : used = skb -> len - offset ; if ( len < used ) used = len ; if ( ! ( flags & MSG_TRUNC ) ) { int rc = skb_copy_datagram_iovec ( skb , offset , msg -> msg_iov , used ) ; if ( rc ) { if ( ! copied ) copied = - EFAULT ; break ; } } * seq += used ; copied += used ; len -= used ; if ( sk -> sk_type != SOCK_STREAM ) goto copy_uaddr ; if ( ! ( flags & MSG_PEEK ) ) { spin_lock_irqsave ( & sk -> sk_receive_queue . lock , cpu_flags ) ; sk_eat_skb ( sk , skb , false ) ; spin_unlock_irqrestore ( & sk -> sk_receive_queue . lock , cpu_flags ) ; * seq = 0 ; } if ( used + offset < skb -> len ) continue ; } while ( len > 0 ) ; out : release_sock ( sk ) ; return copied ; copy_uaddr : if ( uaddr != NULL && skb != NULL ) { memcpy ( uaddr , llc_ui_skb_cb ( skb ) , sizeof ( * uaddr ) ) ; msg -> msg_namelen = sizeof ( * uaddr ) ; } if ( llc_sk ( sk ) -> cmsg_flags ) llc_cmsg_rcv ( msg , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { spin_lock_irqsave ( & sk -> sk_receive_queue . lock , cpu_flags ) ; sk_eat_skb ( sk , skb , false ) ; spin_unlock_irqrestore ( & sk -> sk_receive_queue . lock , cpu_flags ) ; * seq = 0 ; } goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; long timeo <S2SV_ModEnd> ; lock_sock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9077\n\n```\nCWE-000 static struct sock * dccp_v6_request_recv_sock ( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req ) { struct inet_request_sock * ireq = inet_rsk ( req ) ; struct ipv6_pinfo * newnp ; const struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct ipv6_txoptions * opt ; struct inet_sock * newinet ; struct dccp6_sock * newdp6 ; struct sock * newsk ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = dccp_v4_request_recv_sock ( sk , skb , req , dst , req_unhash , own_req ) ; if ( newsk == NULL ) return NULL ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newnp -> saddr = newsk -> sk_v6_rcv_saddr ; inet_csk ( newsk ) -> icsk_af_ops = & dccp_ipv6_mapped ; newsk -> sk_backlog_rcv = dccp_v4_do_rcv ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; <S2SV_StartBug> newnp -> mcast_oif = inet6_iif ( skb ) ; <S2SV_EndBug> newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; dccp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( ! dst ) { struct flowi6 fl6 ; dst = inet6_csk_route_req ( sk , & fl6 , req , IPPROTO_DCCP ) ; if ( ! dst ) goto out ; } newsk = dccp_create_openreq_child ( sk , req , skb ) ; if ( newsk == NULL ) goto out_nonewsk ; ip6_dst_store ( newsk , dst , NULL , NULL ) ; newsk -> sk_route_caps = dst -> dev -> features & ~ ( NETIF_F_IP_CSUM | NETIF_F_TSO ) ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newsk -> sk_v6_daddr = ireq -> ir_v6_rmt_addr ; newnp -> saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_v6_rcv_saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_bound_dev_if = ireq -> ir_iif ; newinet -> inet_opt = NULL ; newnp -> rxopt . all = np -> rxopt . all ; <S2SV_StartBug> newnp -> pktoptions = NULL ; <S2SV_EndBug> newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; opt = ireq -> ipv6_opt ; if ( ! opt ) opt = rcu_dereference ( np -> opt ) ; if ( opt ) { opt = ipv6_dup_options ( newsk , opt ) ; RCU_INIT_POINTER ( newnp -> opt , opt ) ; } inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( opt ) inet_csk ( newsk ) -> icsk_ext_hdr_len = opt -> opt_nflen + opt -> opt_flen ; dccp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; if ( __inet_inherit_port ( sk , newsk ) < 0 ) { inet_csk_prepare_forced_close ( newsk ) ; dccp_done ( newsk ) ; goto out ; } * own_req = inet_ehash_nolisten ( newsk , req_to_sk ( req_unhash ) ) ; if ( * own_req && ireq -> pktopts ) { newnp -> pktoptions = skb_clone ( ireq -> pktopts , GFP_ATOMIC ) ; consume_skb ( ireq -> pktopts ) ; ireq -> pktopts = NULL ; if ( newnp -> pktoptions ) skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } return newsk ; out_overflow : __NET_INC_STATS ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : __NET_INC_STATS ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; newnp -> ipv6_mc_list = NULL ; newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL ; newnp -> <S2SV_ModStart> ; newnp -> ipv6_mc_list = NULL ; newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL ; newnp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_write_prob_diff_update ( vp9_writer * w , vp9_prob newp , vp9_prob oldp ) { <S2SV_EndBug> const int delp = remap_prob ( newp , oldp ) ; encode_term_subexp ( w , delp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_write_prob_diff_update ( vpx_writer <S2SV_ModEnd> * w , <S2SV_ModStart> * w , vpx_prob newp , vpx_prob <S2SV_ModEnd> oldp ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11219\n\n```\nCWE-190 <S2SV_StartBug> static int getnum ( lua_State * L , const char * * fmt , int df ) { <S2SV_EndBug> if ( ! isdigit ( * * fmt ) ) return df ; else { int a = 0 ; do { <S2SV_StartBug> if ( a > ( INT_MAX / 10 ) || a * 10 > ( INT_MAX - ( * * fmt - '0' ) ) ) <S2SV_EndBug> luaL_error ( L , \"integral<S2SV_blank>size<S2SV_blank>overflow\" ) ; a = a * 10 + * ( ( * fmt ) ++ ) - '0' ; } while ( isdigit ( * * fmt ) ) ; return a ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int getnum ( <S2SV_ModEnd> const char * <S2SV_ModStart> ; do { <S2SV_ModEnd> a = a\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16527\n\n```\nCWE-416 void snd_usb_mixer_disconnect ( struct usb_mixer_interface * mixer ) { <S2SV_StartBug> usb_kill_urb ( mixer -> urb ) ; <S2SV_EndBug> usb_kill_urb ( mixer -> rc_urb ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mixer ) { if ( mixer -> disconnected ) return ; if ( mixer -> urb ) <S2SV_ModStart> urb ) ; if ( mixer -> rc_urb ) <S2SV_ModStart> rc_urb ) ; mixer -> disconnected = true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15090\n\n```\nCWE-125 void qedi_dbg_err ( struct qedi_dbg_ctx * qedi , const char * func , u32 line , const char * fmt , ... ) { va_list va ; <S2SV_StartBug> struct va_format vaf ; <S2SV_EndBug> char nfunc [ 32 ] ; memset ( nfunc , 0 , sizeof ( nfunc ) ) ; memcpy ( nfunc , func , sizeof ( nfunc ) - 1 ) ; va_start ( va , fmt ) ; vaf . fmt = fmt ; vaf . va = & va ; if ( likely ( qedi ) && likely ( qedi -> pdev ) ) pr_err ( \"[%s]:[%s:%d]:%d:<S2SV_blank>%pV\" , dev_name ( & qedi -> pdev -> dev ) , <S2SV_StartBug> nfunc , line , qedi -> host_no , & vaf ) ; <S2SV_EndBug> else <S2SV_StartBug> pr_err ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , nfunc , line , & vaf ) ; <S2SV_EndBug> va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct va_format vaf <S2SV_ModEnd> ; va_start ( <S2SV_ModStart> dev ) , func <S2SV_ModEnd> , line , <S2SV_ModStart> ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , func <S2SV_ModEnd> , line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14814\n\n```\nCWE-120 static int mwifiex_update_vs_ie ( const u8 * ies , int ies_len , struct mwifiex_ie * * ie_ptr , u16 mask , unsigned int oui , u8 oui_type ) { struct ieee_types_header * vs_ie ; struct mwifiex_ie * ie = * ie_ptr ; const u8 * vendor_ie ; vendor_ie = cfg80211_find_vendor_ie ( oui , oui_type , ies , ies_len ) ; if ( vendor_ie ) { if ( ! * ie_ptr ) { * ie_ptr = kzalloc ( sizeof ( struct mwifiex_ie ) , GFP_KERNEL ) ; if ( ! * ie_ptr ) return - ENOMEM ; ie = * ie_ptr ; } vs_ie = ( struct ieee_types_header * ) vendor_ie ; <S2SV_StartBug> memcpy ( ie -> ie_buffer + le16_to_cpu ( ie -> ie_length ) , <S2SV_EndBug> vs_ie , vs_ie -> len + 2 ) ; le16_unaligned_add_cpu ( & ie -> ie_length , vs_ie -> len + 2 ) ; ie -> mgmt_subtype_mask = cpu_to_le16 ( mask ) ; ie -> ie_index = cpu_to_le16 ( MWIFIEX_AUTO_IDX_MASK ) ; } * ie_ptr = ie ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) vendor_ie ; if ( le16_to_cpu ( ie -> ie_length ) + vs_ie -> len + 2 > IEEE_MAX_IE_SIZE ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static uint16_t transmit_data ( serial_data_type_t type , uint8_t * data , uint16_t length ) { assert ( data != NULL ) ; assert ( length > 0 ) ; if ( type < DATA_TYPE_COMMAND || type > DATA_TYPE_SCO ) { LOG_ERROR ( \"%s<S2SV_blank>invalid<S2SV_blank>data<S2SV_blank>type:<S2SV_blank>%d\" , __func__ , type ) ; return 0 ; } -- data ; uint8_t previous_byte = * data ; * ( data ) = type ; ++ length ; uint16_t transmitted_length = 0 ; while ( length > 0 ) { <S2SV_StartBug> ssize_t ret = write ( uart_fd , data + transmitted_length , length ) ; <S2SV_EndBug> switch ( ret ) { case - 1 : LOG_ERROR ( \"In<S2SV_blank>%s,<S2SV_blank>error<S2SV_blank>writing<S2SV_blank>to<S2SV_blank>the<S2SV_blank>uart<S2SV_blank>serial<S2SV_blank>port:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; goto done ; case 0 : goto done ; default : transmitted_length += ret ; length -= ret ; break ; } } done : ; * ( data ) = previous_byte ; if ( transmitted_length > 0 ) -- transmitted_length ; return transmitted_length ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ssize_t ret = TEMP_FAILURE_RETRY ( <S2SV_ModStart> transmitted_length , length )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27675\n\n```\nCWE-362 static void clear_evtchn_to_irq_row ( unsigned row ) { unsigned col ; for ( col = 0 ; col < EVTCHN_PER_ROW ; col ++ ) <S2SV_StartBug> evtchn_to_irq [ row ] [ col ] = - 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> col ++ ) WRITE_ONCE ( <S2SV_ModStart> [ col ] , - 1 ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3760\n\n```\nCWE-20 bool adapter_enable_disable ( ) { int error ; <S2SV_StartBug> CALL_AND_WAIT ( error = bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> TASSERT ( error == BT_STATUS_SUCCESS , \"Error<S2SV_blank>enabling<S2SV_blank>Bluetooth:<S2SV_blank>%d\" , error ) ; TASSERT ( adapter_get_state ( ) == BT_STATE_ON , \"Adapter<S2SV_blank>did<S2SV_blank>not<S2SV_blank>turn<S2SV_blank>on.\" ) ; CALL_AND_WAIT ( error = bt_interface -> disable ( ) , adapter_state_changed ) ; TASSERT ( error == BT_STATUS_SUCCESS , \"Error<S2SV_blank>disabling<S2SV_blank>Bluetooth:<S2SV_blank>%d\" , error ) ; TASSERT ( adapter_get_state ( ) == BT_STATE_OFF , \"Adapter<S2SV_blank>did<S2SV_blank>not<S2SV_blank>turn<S2SV_blank>off.\" ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> enable ( false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10161\n\n```\nCWE-125 static inline long object_common1 ( UNSERIALIZE_PARAMETER , zend_class_entry * ce ) { <S2SV_StartBug> long elements ; <S2SV_EndBug> elements = parse_iv2 ( ( * p ) + 2 , p ) ; ( * p ) += 2 ; if ( ce -> serialize == NULL ) { object_init_ex ( * rval , ce ) ; } else { zend_error ( E_WARNING , \"Erroneous<S2SV_blank>data<S2SV_blank>format<S2SV_blank>for<S2SV_blank>unserializing<S2SV_blank>\\'%s\\'\" , ce -> name ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } return elements ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long elements ; if ( * p >= max - 2 ) { zend_error ( E_WARNING , \"Bad<S2SV_blank>unserialize<S2SV_blank>data\" ) ; return - 1 ; } <S2SV_ModStart> ) ; return - 1 <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> <S2SV_StartBug> int i ; <S2SV_EndBug> fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><options><S2SV_blank>-o<S2SV_blank>dst_filename<S2SV_blank>src_filename<S2SV_blank>\\\\n\" , exec_name ) ; fprintf ( stderr , \"\\\\nOptions:\\\\n\" ) ; arg_show_usage ( stderr , main_args ) ; fprintf ( stderr , \"\\\\nEncoder<S2SV_blank>Global<S2SV_blank>Options:\\\\n\" ) ; arg_show_usage ( stderr , global_args ) ; fprintf ( stderr , \"\\\\nRate<S2SV_blank>Control<S2SV_blank>Options:\\\\n\" ) ; arg_show_usage ( stderr , rc_args ) ; fprintf ( stderr , \"\\\\nTwopass<S2SV_blank>Rate<S2SV_blank>Control<S2SV_blank>Options:\\\\n\" ) ; arg_show_usage ( stderr , rc_twopass_args ) ; fprintf ( stderr , \"\\\\nKeyframe<S2SV_blank>Placement<S2SV_blank>Options:\\\\n\" ) ; arg_show_usage ( stderr , kf_args ) ; # if CONFIG_VP8_ENCODER fprintf ( stderr , \"\\\\nVP8<S2SV_blank>Specific<S2SV_blank>Options:\\\\n\" ) ; arg_show_usage ( stderr , vp8_args ) ; # endif # if CONFIG_VP9_ENCODER fprintf ( stderr , \"\\\\nVP9<S2SV_blank>Specific<S2SV_blank>Options:\\\\n\" ) ; arg_show_usage ( stderr , vp9_args ) ; # endif <S2SV_StartBug> fprintf ( stderr , \"\\\\nStream<S2SV_blank>timebase<S2SV_blank>(--timebase):\\\\n\" <S2SV_EndBug> \"<S2SV_blank><S2SV_blank>The<S2SV_blank>desired<S2SV_blank>precision<S2SV_blank>of<S2SV_blank>timestamps<S2SV_blank>in<S2SV_blank>the<S2SV_blank>output,<S2SV_blank>expressed\\\\n\" \"<S2SV_blank><S2SV_blank>in<S2SV_blank>fractional<S2SV_blank>seconds.<S2SV_blank>Default<S2SV_blank>is<S2SV_blank>1/1000.\\\\n\" ) ; fprintf ( stderr , \"\\\\nIncluded<S2SV_blank>encoders:\\\\n\\\\n\" ) ; <S2SV_StartBug> for ( i = 0 ; i < get_vpx_encoder_count ( ) ; ++ i ) { <S2SV_EndBug> const VpxInterface * const encoder = get_vpx_encoder_by_index ( i ) ; <S2SV_StartBug> fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%-6s<S2SV_blank>-<S2SV_blank>%s\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> encoder -> name , vpx_codec_iface_name ( encoder -> interface ( ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void <S2SV_ModStart> { int i ; const int num_encoder = get_vpx_encoder_count ( ) <S2SV_ModStart> ; # endif # if CONFIG_VP10_ENCODER fprintf ( stderr , \"\\\\nVP10<S2SV_blank>Specific<S2SV_blank>Options:\\\\n\" ) ; arg_show_usage ( stderr , vp10_args ) ; # endif <S2SV_ModStart> ; i < num_encoder <S2SV_ModEnd> ; ++ i <S2SV_ModStart> i ) ; const char * defstr = ( i == ( num_encoder - 1 ) ) ? \"(default)\" : \"\" ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%-6s<S2SV_blank>-<S2SV_blank>%s<S2SV_blank>%s\\\\n\" <S2SV_ModEnd> , encoder -> <S2SV_ModStart> ( encoder -> codec_interface ( ) ) , defstr <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } fprintf ( stderr , \"\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; fprintf ( stderr , \"Use<S2SV_blank>--codec<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>to<S2SV_blank>a<S2SV_blank>non-default<S2SV_blank>encoder.\\\\n\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10671\n\n```\nCWE-119 static void de_dotdot ( char * file ) { char * cp ; char * cp2 ; int l ; while ( ( cp = strstr ( file , \"//\" ) ) != ( char * ) 0 ) { for ( cp2 = cp + 2 ; * cp2 == '/' ; ++ cp2 ) continue ; ( void ) strcpy ( cp + 1 , cp2 ) ; } while ( strncmp ( file , \"./\" , 2 ) == 0 ) ( void ) memmove ( file , file + 2 , strlen ( file ) - 1 ) ; while ( ( cp = strstr ( file , \"/./\" ) ) != ( char * ) 0 ) <S2SV_StartBug> ( void ) memmove ( cp , cp + 2 , strlen ( file ) - 1 ) ; <S2SV_EndBug> for ( ; ; ) { while ( strncmp ( file , \"../\" , 3 ) == 0 ) ( void ) memmove ( file , file + 3 , strlen ( file ) - 2 ) ; cp = strstr ( file , \"/../\" ) ; if ( cp == ( char * ) 0 ) break ; for ( cp2 = cp - 1 ; cp2 >= file && * cp2 != '/' ; -- cp2 ) continue ; ( void ) strcpy ( cp2 + 1 , cp + 4 ) ; } while ( ( l = strlen ( file ) ) > 3 && strcmp ( ( cp = file + l - 3 ) , \"/..\" ) == 0 ) { for ( cp2 = cp - 1 ; cp2 >= file && * cp2 != '/' ; -- cp2 ) continue ; if ( cp2 < file ) break ; * cp2 = '\\\\0' ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , strlen ( cp <S2SV_ModEnd> ) - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19083\n\n```\nCWE-401 struct clock_source * dce110_clock_source_create ( struct dc_context * ctx , struct dc_bios * bios , enum clock_source_id id , const struct dce110_clk_src_regs * regs , bool dp_clk_src ) { struct dce110_clk_src * clk_src = kzalloc ( sizeof ( struct dce110_clk_src ) , GFP_KERNEL ) ; if ( ! clk_src ) return NULL ; if ( dce110_clk_src_construct ( clk_src , ctx , bios , id , regs , & cs_shift , & cs_mask ) ) { clk_src -> base . dp_clk_src = dp_clk_src ; return & clk_src -> base ; } <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base ; } kfree ( clk_src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6976\n\n```\nCWE-908 void * vips_tracked_malloc ( size_t size ) { void * buf ; vips_tracked_init ( ) ; size += 16 ; <S2SV_StartBug> if ( ! ( buf = g_try_malloc ( size ) ) ) { <S2SV_EndBug> # ifdef DEBUG g_assert_not_reached ( ) ; # endif vips_error ( \"vips_tracked\" , _ ( \"out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>---<S2SV_blank>size<S2SV_blank>==<S2SV_blank>%dMB\" ) , ( int ) ( size / ( 1024.0 * 1024.0 ) ) ) ; g_warning ( _ ( \"out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>---<S2SV_blank>size<S2SV_blank>==<S2SV_blank>%dMB\" ) , ( int ) ( size / ( 1024.0 * 1024.0 ) ) ) ; return ( NULL ) ; } g_mutex_lock ( vips_tracked_mutex ) ; * ( ( size_t * ) buf ) = size ; buf = ( void * ) ( ( char * ) buf + 16 ) ; vips_tracked_mem += size ; if ( vips_tracked_mem > vips_tracked_mem_highwater ) vips_tracked_mem_highwater = vips_tracked_mem ; vips_tracked_allocs += 1 ; # ifdef DEBUG_VERBOSE printf ( \"vips_tracked_malloc:<S2SV_blank>%p,<S2SV_blank>%zd<S2SV_blank>bytes\\\\n\" , buf , size ) ; # endif g_mutex_unlock ( vips_tracked_mutex ) ; VIPS_GATE_MALLOC ( size ) ; return ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( buf = g_try_malloc0 <S2SV_ModEnd> ( size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0842\n\n```\nCWE-119 WORD32 ih264d_read_mmco_commands ( struct _DecStruct * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; dpb_commands_t * ps_dpb_cmds = ps_dec -> ps_dpb_cmds ; dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; WORD32 j ; UWORD8 u1_buf_mode ; struct MMCParams * ps_mmc_params ; UWORD32 * pu4_bitstrm_buf = ps_dec -> ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; UWORD32 u4_bit_ofst = ps_dec -> ps_bitstrm -> u4_ofst ; ps_slice -> u1_mmco_equalto5 = 0 ; { if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_slice -> u1_no_output_of_prior_pics_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>no_output_of_prior_pics_flag\" , ps_slice -> u1_no_output_of_prior_pics_flag ) ; ps_slice -> u1_long_term_reference_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>long_term_reference_flag\" , ps_slice -> u1_long_term_reference_flag ) ; ps_dpb_cmds -> u1_idr_pic = 1 ; ps_dpb_cmds -> u1_no_output_of_prior_pics_flag = ps_slice -> u1_no_output_of_prior_pics_flag ; ps_dpb_cmds -> u1_long_term_reference_flag = ps_slice -> u1_long_term_reference_flag ; } else { u1_buf_mode = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>adaptive_ref_pic_buffering_flag\" , u1_buf_mode ) ; ps_dpb_cmds -> u1_buf_mode = u1_buf_mode ; j = 0 ; if ( u1_buf_mode == 1 ) { UWORD32 u4_mmco ; UWORD32 u4_diff_pic_num ; UWORD32 u4_lt_idx , u4_max_lt_idx ; u4_mmco = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; while ( u4_mmco != END_OF_MMCO ) <S2SV_StartBug> { <S2SV_EndBug> ps_mmc_params = & ps_dpb_cmds -> as_mmc_params [ j ] ; ps_mmc_params -> u4_mmco = u4_mmco ; switch ( u4_mmco ) { case MARK_ST_PICNUM_AS_NONREF : u4_diff_pic_num = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_diff_pic_num = u4_diff_pic_num ; break ; case MARK_LT_INDEX_AS_NONREF : u4_lt_idx = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_lt_idx = u4_lt_idx ; break ; case MARK_ST_PICNUM_AS_LT_INDEX : u4_diff_pic_num = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_diff_pic_num = u4_diff_pic_num ; u4_lt_idx = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_lt_idx = u4_lt_idx ; break ; case SET_MAX_LT_INDEX : { u4_max_lt_idx = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_max_lt_idx_plus1 = u4_max_lt_idx ; break ; } case RESET_REF_PICTURES : { ps_slice -> u1_mmco_equalto5 = 1 ; break ; } case SET_LT_INDEX : u4_lt_idx = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_lt_idx = u4_lt_idx ; break ; default : break ; } u4_mmco = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; j ++ ; } ps_dpb_cmds -> u1_num_of_commands = j ; } } ps_dpb_cmds -> u1_dpb_commands_read = 1 ; ps_dpb_cmds -> u1_dpb_commands_read_slc = 1 ; } u4_bit_ofst = ps_dec -> ps_bitstrm -> u4_ofst - u4_bit_ofst ; return u4_bit_ofst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> END_OF_MMCO ) { if ( j >= MAX_REF_BUFS ) { ALOGE ( \"b/25818142\" ) ; android_errorWriteLog ( 0x534e4554 , \"25818142\" ) ; ps_dpb_cmds -> u1_num_of_commands = 0 ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 static void __xen_evtchn_do_upcall ( void ) { struct vcpu_info * vcpu_info = __this_cpu_read ( xen_vcpu ) ; int cpu = smp_processor_id ( ) ; <S2SV_StartBug> read_lock ( & evtchn_rwlock ) ; <S2SV_EndBug> do { vcpu_info -> evtchn_upcall_pending = 0 ; <S2SV_StartBug> xen_evtchn_handle_events ( cpu ) ; <S2SV_EndBug> BUG_ON ( ! irqs_disabled ( ) ) ; virt_rmb ( ) ; } while ( vcpu_info -> evtchn_upcall_pending ) ; read_unlock ( & evtchn_rwlock ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; struct evtchn_loop_ctrl ctrl = { 0 } ; <S2SV_ModStart> xen_evtchn_handle_events ( cpu , & ctrl <S2SV_ModStart> evtchn_rwlock ) ; __this_cpu_inc ( irq_epoch ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7842\n\n```\nCWE-362 static int handle_emulation_failure ( struct kvm_vcpu * vcpu ) { int r = EMULATE_DONE ; ++ vcpu -> stat . insn_emulation_fail ; trace_kvm_emulate_insn_failed ( vcpu ) ; <S2SV_StartBug> if ( ! is_guest_mode ( vcpu ) ) { <S2SV_EndBug> vcpu -> run -> exit_reason = KVM_EXIT_INTERNAL_ERROR ; vcpu -> run -> internal . suberror = KVM_INTERNAL_ERROR_EMULATION ; vcpu -> run -> internal . ndata = 0 ; r = EMULATE_FAIL ; } kvm_queue_exception ( vcpu , UD_VECTOR ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( vcpu ) && kvm_x86_ops -> get_cpl ( vcpu ) == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void tcpUpdateRetransmitQueue ( Socket * socket ) { size_t length ; TcpQueueItem * prevQueueItem ; TcpQueueItem * queueItem ; TcpHeader * header ; prevQueueItem = NULL ; queueItem = socket -> retransmitQueue ; while ( queueItem != NULL ) { header = ( TcpHeader * ) queueItem -> header ; if ( header -> flags & TCP_FLAG_SYN ) <S2SV_StartBug> length = 1 ; <S2SV_EndBug> <S2SV_StartBug> else if ( header -> flags & TCP_FLAG_FIN ) <S2SV_EndBug> length = queueItem -> length + 1 ; <S2SV_StartBug> else <S2SV_EndBug> length = queueItem -> length ; if ( TCP_CMP_SEQ ( socket -> sndUna , ntohl ( header -> seqNum ) + length ) >= 0 ) { if ( prevQueueItem == NULL ) { socket -> retransmitQueue = queueItem -> next ; memPoolFree ( queueItem ) ; queueItem = socket -> retransmitQueue ; } else { prevQueueItem -> next = queueItem -> next ; memPoolFree ( queueItem ) ; queueItem = prevQueueItem -> next ; } tcpTimerStart ( & socket -> retransmitTimer , socket -> rto ) ; socket -> retransmitCount = 0 ; } else { prevQueueItem = queueItem ; queueItem = queueItem -> next ; } } if ( socket -> retransmitQueue == NULL ) tcpTimerStop ( & socket -> retransmitTimer ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & TCP_FLAG_SYN ) { <S2SV_ModStart> = 1 ; } <S2SV_ModStart> & TCP_FLAG_FIN ) { <S2SV_ModStart> + 1 ; } else { length = queueItem -> length ; } <S2SV_ModEnd> if ( TCP_CMP_SEQ\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1479\n\n```\nCWE-399 static int inotify_release ( struct inode * ignored , struct file * file ) { struct fsnotify_group * group = file -> private_data ; <S2SV_StartBug> struct user_struct * user = group -> inotify_data . user ; <S2SV_EndBug> pr_debug ( \"%s:<S2SV_blank>group=%p\\\\n\" , __func__ , group ) ; fsnotify_clear_marks_by_group ( group ) ; fsnotify_put_group ( group ) ; <S2SV_StartBug> atomic_dec ( & user -> inotify_devs ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private_data ; <S2SV_ModEnd> pr_debug ( \"%s:<S2SV_blank>group=%p\\\\n\" <S2SV_ModStart> group ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6874\n\n```\nCWE-362 static struct ucounts * get_ucounts ( struct user_namespace * ns , kuid_t uid ) { struct hlist_head * hashent = ucounts_hashentry ( ns , uid ) ; struct ucounts * ucounts , * new ; spin_lock_irq ( & ucounts_lock ) ; ucounts = find_ucounts ( ns , uid , hashent ) ; if ( ! ucounts ) { spin_unlock_irq ( & ucounts_lock ) ; new = kzalloc ( sizeof ( * new ) , GFP_KERNEL ) ; if ( ! new ) return NULL ; new -> ns = ns ; new -> uid = uid ; <S2SV_StartBug> atomic_set ( & new -> count , 0 ) ; <S2SV_EndBug> spin_lock_irq ( & ucounts_lock ) ; ucounts = find_ucounts ( ns , uid , hashent ) ; if ( ucounts ) { kfree ( new ) ; } else { hlist_add_head ( & new -> node , hashent ) ; ucounts = new ; } } <S2SV_StartBug> if ( ! atomic_add_unless ( & ucounts -> count , 1 , INT_MAX ) ) <S2SV_EndBug> ucounts = NULL ; spin_unlock_irq ( & ucounts_lock ) ; return ucounts ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = uid ; <S2SV_ModEnd> new -> count <S2SV_ModStart> new -> count = 0 <S2SV_ModEnd> ; spin_lock_irq ( <S2SV_ModStart> } if ( <S2SV_ModEnd> ucounts -> count <S2SV_ModStart> ucounts -> count == INT_MAX ) ucounts = NULL ; else ucounts -> count += 1 <S2SV_ModEnd> ; spin_unlock_irq (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14604\n\n```\nCWE-20 static void copy_move_file ( CopyMoveJob * copy_job , GFile * src , GFile * dest_dir , gboolean same_fs , gboolean unique_names , char * * dest_fs_type , SourceInfo * source_info , TransferInfo * transfer_info , GHashTable * debuting_files , GdkPoint * position , gboolean overwrite , gboolean * skipped_file , gboolean readonly_source_fs ) { GFile * dest , * new_dest ; g_autofree gchar * dest_uri = NULL ; GError * error ; GFileCopyFlags flags ; char * primary , * secondary , * details ; int response ; ProgressData pdata ; gboolean would_recurse , is_merge ; CommonJob * job ; gboolean res ; int unique_name_nr ; gboolean handled_invalid_filename ; job = ( CommonJob * ) copy_job ; if ( should_skip_file ( job , src ) ) { * skipped_file = TRUE ; return ; } unique_name_nr = 1 ; handled_invalid_filename = * dest_fs_type != NULL ; if ( unique_names ) { dest = get_unique_target_file ( src , dest_dir , same_fs , * dest_fs_type , unique_name_nr ++ ) ; } else if ( copy_job -> target_name != NULL ) { dest = get_target_file_with_custom_name ( src , dest_dir , * dest_fs_type , same_fs , copy_job -> target_name ) ; } else { dest = get_target_file ( src , dest_dir , * dest_fs_type , same_fs ) ; } if ( test_dir_is_parent ( dest_dir , src ) ) { if ( job -> skip_all_error ) { goto out ; } primary = copy_job -> is_move ? g_strdup ( _ ( \"You<S2SV_blank>cannot<S2SV_blank>move<S2SV_blank>a<S2SV_blank>folder<S2SV_blank>into<S2SV_blank>itself.\" ) ) : g_strdup ( _ ( \"You<S2SV_blank>cannot<S2SV_blank>copy<S2SV_blank>a<S2SV_blank>folder<S2SV_blank>into<S2SV_blank>itself.\" ) ) ; secondary = g_strdup ( _ ( \"The<S2SV_blank>destination<S2SV_blank>folder<S2SV_blank>is<S2SV_blank>inside<S2SV_blank>the<S2SV_blank>source<S2SV_blank>folder.\" ) ) ; response = run_cancel_or_skip_warning ( job , primary , secondary , NULL , source_info -> num_files , source_info -> num_files - transfer_info -> num_files ) ; if ( response == 0 || response == GTK_RESPONSE_DELETE_EVENT ) { abort_job ( job ) ; } else if ( response == 1 ) { job -> skip_all_error = TRUE ; } else if ( response == 2 ) { } else { g_assert_not_reached ( ) ; } goto out ; } if ( test_dir_is_parent ( src , dest ) ) { if ( job -> skip_all_error ) { goto out ; } primary = copy_job -> is_move ? g_strdup ( _ ( \"You<S2SV_blank>cannot<S2SV_blank>move<S2SV_blank>a<S2SV_blank>file<S2SV_blank>over<S2SV_blank>itself.\" ) ) : g_strdup ( _ ( \"You<S2SV_blank>cannot<S2SV_blank>copy<S2SV_blank>a<S2SV_blank>file<S2SV_blank>over<S2SV_blank>itself.\" ) ) ; secondary = g_strdup ( _ ( \"The<S2SV_blank>source<S2SV_blank>file<S2SV_blank>would<S2SV_blank>be<S2SV_blank>overwritten<S2SV_blank>by<S2SV_blank>the<S2SV_blank>destination.\" ) ) ; response = run_cancel_or_skip_warning ( job , primary , secondary , NULL , source_info -> num_files , source_info -> num_files - transfer_info -> num_files ) ; if ( response == 0 || response == GTK_RESPONSE_DELETE_EVENT ) { abort_job ( job ) ; } else if ( response == 1 ) { job -> skip_all_error = TRUE ; } else if ( response == 2 ) { } else { g_assert_not_reached ( ) ; } goto out ; } retry : error = NULL ; flags = G_FILE_COPY_NOFOLLOW_SYMLINKS ; if ( overwrite ) { flags |= G_FILE_COPY_OVERWRITE ; } if ( readonly_source_fs ) { flags |= G_FILE_COPY_TARGET_DEFAULT_PERMS ; } pdata . job = copy_job ; pdata . last_size = 0 ; pdata . source_info = source_info ; pdata . transfer_info = transfer_info ; if ( copy_job -> is_move ) { res = g_file_move ( src , dest , flags , job -> cancellable , copy_file_progress_callback , & pdata , & error ) ; } else { res = g_file_copy ( src , dest , flags , job -> cancellable , copy_file_progress_callback , & pdata , & error ) ; } if ( res ) { GFile * real ; real = map_possibly_volatile_file_to_real ( dest , job -> cancellable , & error ) ; if ( real == NULL ) { res = FALSE ; } else { g_object_unref ( dest ) ; dest = real ; } } if ( res ) { transfer_info -> num_files ++ ; report_copy_progress ( copy_job , source_info , transfer_info ) ; if ( debuting_files ) { dest_uri = g_file_get_uri ( dest ) ; if ( position ) { nautilus_file_changes_queue_schedule_position_set ( dest , * position , job -> screen_num ) ; } else if ( eel_uri_is_desktop ( dest_uri ) ) { nautilus_file_changes_queue_schedule_position_remove ( dest ) ; } g_hash_table_replace ( debuting_files , g_object_ref ( dest ) , GINT_TO_POINTER ( TRUE ) ) ; } if ( copy_job -> is_move ) { nautilus_file_changes_queue_file_moved ( src , dest ) ; } else { nautilus_file_changes_queue_file_added ( dest ) ; } if ( copy_job -> desktop_location != NULL && g_file_equal ( copy_job -> desktop_location , dest_dir ) && is_trusted_desktop_file ( src , job -> cancellable ) ) { <S2SV_StartBug> mark_desktop_file_trusted ( job , <S2SV_EndBug> job -> cancellable , dest , FALSE ) ; } if ( job -> undo_info != NULL ) { nautilus_file_undo_info_ext_add_origin_target_pair ( NAUTILUS_FILE_UNDO_INFO_EXT ( job -> undo_info ) , src , dest ) ; } g_object_unref ( dest ) ; return ; } if ( ! handled_invalid_filename && IS_IO_ERROR ( error , INVALID_FILENAME ) ) { handled_invalid_filename = TRUE ; g_assert ( * dest_fs_type == NULL ) ; * dest_fs_type = query_fs_type ( dest_dir , job -> cancellable ) ; if ( unique_names ) { new_dest = get_unique_target_file ( src , dest_dir , same_fs , * dest_fs_type , unique_name_nr ) ; } else { new_dest = get_target_file ( src , dest_dir , * dest_fs_type , same_fs ) ; } if ( ! g_file_equal ( dest , new_dest ) ) { g_object_unref ( dest ) ; dest = new_dest ; g_error_free ( error ) ; goto retry ; } else { g_object_unref ( new_dest ) ; } } if ( ! overwrite && IS_IO_ERROR ( error , EXISTS ) ) { gboolean is_merge ; FileConflictResponse * response ; g_error_free ( error ) ; if ( unique_names ) { g_object_unref ( dest ) ; dest = get_unique_target_file ( src , dest_dir , same_fs , * dest_fs_type , unique_name_nr ++ ) ; goto retry ; } is_merge = FALSE ; if ( is_dir ( dest ) && is_dir ( src ) ) { is_merge = TRUE ; } if ( ( is_merge && job -> merge_all ) || ( ! is_merge && job -> replace_all ) ) { overwrite = TRUE ; goto retry ; } if ( job -> skip_all_conflict ) { goto out ; } response = handle_copy_move_conflict ( job , src , dest , dest_dir ) ; if ( response -> id == GTK_RESPONSE_CANCEL || response -> id == GTK_RESPONSE_DELETE_EVENT ) { file_conflict_response_free ( response ) ; abort_job ( job ) ; } else if ( response -> id == CONFLICT_RESPONSE_SKIP ) { if ( response -> apply_to_all ) { job -> skip_all_conflict = TRUE ; } file_conflict_response_free ( response ) ; } else if ( response -> id == CONFLICT_RESPONSE_REPLACE ) { if ( response -> apply_to_all ) { if ( is_merge ) { job -> merge_all = TRUE ; } else { job -> replace_all = TRUE ; } } overwrite = TRUE ; file_conflict_response_free ( response ) ; goto retry ; } else if ( response -> id == CONFLICT_RESPONSE_RENAME ) { g_object_unref ( dest ) ; dest = get_target_file_for_display_name ( dest_dir , response -> new_name ) ; file_conflict_response_free ( response ) ; goto retry ; } else { g_assert_not_reached ( ) ; } } else if ( overwrite && IS_IO_ERROR ( error , IS_DIRECTORY ) ) { gboolean existing_file_deleted ; DeleteExistingFileData data ; g_error_free ( error ) ; data . job = job ; data . source = src ; existing_file_deleted = delete_file_recursively ( dest , job -> cancellable , existing_file_removed_callback , & data ) ; if ( existing_file_deleted ) { goto retry ; } } else if ( IS_IO_ERROR ( error , WOULD_RECURSE ) || IS_IO_ERROR ( error , WOULD_MERGE ) ) { is_merge = error -> code == G_IO_ERROR_WOULD_MERGE ; would_recurse = error -> code == G_IO_ERROR_WOULD_RECURSE ; g_error_free ( error ) ; if ( overwrite && would_recurse ) { error = NULL ; if ( ! g_file_delete ( dest , job -> cancellable , & error ) && ! IS_IO_ERROR ( error , NOT_FOUND ) ) { if ( job -> skip_all_error ) { g_error_free ( error ) ; goto out ; } if ( copy_job -> is_move ) { primary = f ( _ ( \"Error<S2SV_blank>while<S2SV_blank>moving<S2SV_blank>“%B”.\" ) , src ) ; } else { primary = f ( _ ( \"Error<S2SV_blank>while<S2SV_blank>copying<S2SV_blank>“%B”.\" ) , src ) ; } secondary = f ( _ ( \"Could<S2SV_blank>not<S2SV_blank>remove<S2SV_blank>the<S2SV_blank>already<S2SV_blank>existing<S2SV_blank>file<S2SV_blank>with<S2SV_blank>the<S2SV_blank>same<S2SV_blank>name<S2SV_blank>in<S2SV_blank>%F.\" ) , dest_dir ) ; details = error -> message ; response = run_warning ( job , primary , secondary , details , TRUE , CANCEL , SKIP_ALL , SKIP , NULL ) ; g_error_free ( error ) ; if ( response == 0 || response == GTK_RESPONSE_DELETE_EVENT ) { abort_job ( job ) ; } else if ( response == 1 ) { job -> skip_all_error = TRUE ; } else if ( response == 2 ) { } else { g_assert_not_reached ( ) ; } goto out ; } if ( error ) { g_error_free ( error ) ; error = NULL ; } nautilus_file_changes_queue_file_removed ( dest ) ; } if ( is_merge ) { same_fs = FALSE ; } if ( ! copy_move_directory ( copy_job , src , & dest , same_fs , would_recurse , dest_fs_type , source_info , transfer_info , debuting_files , skipped_file , readonly_source_fs ) ) { g_assert ( * dest_fs_type != NULL ) ; handled_invalid_filename = TRUE ; goto retry ; } g_object_unref ( dest ) ; return ; } else if ( IS_IO_ERROR ( error , CANCELLED ) ) { g_error_free ( error ) ; } else { if ( job -> skip_all_error ) { g_error_free ( error ) ; goto out ; } primary = f ( _ ( \"Error<S2SV_blank>while<S2SV_blank>copying<S2SV_blank>“%B”.\" ) , src ) ; secondary = f ( _ ( \"There<S2SV_blank>was<S2SV_blank>an<S2SV_blank>error<S2SV_blank>copying<S2SV_blank>the<S2SV_blank>file<S2SV_blank>into<S2SV_blank>%F.\" ) , dest_dir ) ; details = error -> message ; response = run_cancel_or_skip_warning ( job , primary , secondary , details , source_info -> num_files , source_info -> num_files - transfer_info -> num_files ) ; g_error_free ( error ) ; if ( response == 0 || response == GTK_RESPONSE_DELETE_EVENT ) { abort_job ( job ) ; } else if ( response == 1 ) { job -> skip_all_error = TRUE ; } else if ( response == 2 ) { } else { g_assert_not_reached ( ) ; } } out : * skipped_file = TRUE ; g_object_unref ( dest ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { mark_desktop_file_executable <S2SV_ModEnd> ( job ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static struct page * follow_pmd_mask ( struct vm_area_struct * vma , unsigned long address , pud_t * pudp , unsigned int flags , struct follow_page_context * ctx ) { pmd_t * pmd , pmdval ; spinlock_t * ptl ; struct page * page ; struct mm_struct * mm = vma -> vm_mm ; pmd = pmd_offset ( pudp , address ) ; pmdval = READ_ONCE ( * pmd ) ; if ( pmd_none ( pmdval ) ) return no_page_table ( vma , flags ) ; if ( pmd_huge ( pmdval ) && vma -> vm_flags & VM_HUGETLB ) { page = follow_huge_pmd ( mm , address , pmd , flags ) ; if ( page ) return page ; return no_page_table ( vma , flags ) ; } if ( is_hugepd ( __hugepd ( pmd_val ( pmdval ) ) ) ) { page = follow_huge_pd ( vma , address , __hugepd ( pmd_val ( pmdval ) ) , flags , PMD_SHIFT ) ; if ( page ) return page ; return no_page_table ( vma , flags ) ; } retry : if ( ! pmd_present ( pmdval ) ) { if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) return no_page_table ( vma , flags ) ; VM_BUG_ON ( thp_migration_supported ( ) && ! is_pmd_migration_entry ( pmdval ) ) ; if ( is_pmd_migration_entry ( pmdval ) ) pmd_migration_entry_wait ( mm , pmd ) ; pmdval = READ_ONCE ( * pmd ) ; if ( pmd_none ( pmdval ) ) return no_page_table ( vma , flags ) ; goto retry ; } if ( pmd_devmap ( pmdval ) ) { ptl = pmd_lock ( mm , pmd ) ; page = follow_devmap_pmd ( vma , address , pmd , flags , & ctx -> pgmap ) ; spin_unlock ( ptl ) ; if ( page ) return page ; } if ( likely ( ! pmd_trans_huge ( pmdval ) ) ) return follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; if ( ( flags & FOLL_NUMA ) && pmd_protnone ( pmdval ) ) return no_page_table ( vma , flags ) ; retry_locked : ptl = pmd_lock ( mm , pmd ) ; if ( unlikely ( pmd_none ( * pmd ) ) ) { spin_unlock ( ptl ) ; return no_page_table ( vma , flags ) ; } if ( unlikely ( ! pmd_present ( * pmd ) ) ) { spin_unlock ( ptl ) ; if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) return no_page_table ( vma , flags ) ; pmd_migration_entry_wait ( mm , pmd ) ; goto retry_locked ; } if ( unlikely ( ! pmd_trans_huge ( * pmd ) ) ) { spin_unlock ( ptl ) ; return follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; } if ( flags & FOLL_SPLIT ) { int ret ; page = pmd_page ( * pmd ) ; if ( is_huge_zero_page ( page ) ) { spin_unlock ( ptl ) ; ret = 0 ; split_huge_pmd ( vma , pmd , address ) ; if ( pmd_trans_unstable ( pmd ) ) ret = - EBUSY ; } else { <S2SV_StartBug> get_page ( page ) ; <S2SV_EndBug> spin_unlock ( ptl ) ; lock_page ( page ) ; ret = split_huge_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; if ( pmd_none ( * pmd ) ) return no_page_table ( vma , flags ) ; } return ret ? ERR_PTR ( ret ) : follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; } page = follow_trans_huge_pmd ( vma , address , pmd , flags ) ; spin_unlock ( ptl ) ; ctx -> page_mask = HPAGE_PMD_NR - 1 ; return page ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { if ( unlikely ( ! try_get_page ( page ) ) ) { spin_unlock ( ptl ) ; return ERR_PTR ( - ENOMEM ) ; } <S2SV_ModEnd> spin_unlock ( ptl\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1541\n\n```\nCWE-20 static int zip_read_mac_metadata ( struct archive_read * a , struct archive_entry * entry , struct zip_entry * rsrc ) { struct zip * zip = ( struct zip * ) a -> format -> data ; unsigned char * metadata , * mp ; int64_t offset = archive_filter_bytes ( & a -> archive , 0 ) ; size_t remaining_bytes , metadata_bytes ; ssize_t hsize ; int ret = ARCHIVE_OK , eof ; switch ( rsrc -> compression ) { <S2SV_StartBug> case 0 : <S2SV_EndBug> # ifdef HAVE_ZLIB_H case 8 : # endif break ; default : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unsupported<S2SV_blank>ZIP<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(%s)\" , compression_name ( rsrc -> compression ) ) ; return ( ARCHIVE_WARN ) ; } if ( rsrc -> uncompressed_size > ( 4 * 1024 * 1024 ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Mac<S2SV_blank>metadata<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%jd<S2SV_blank>><S2SV_blank>4M<S2SV_blank>bytes\" , <S2SV_StartBug> ( intmax_t ) rsrc -> uncompressed_size ) ; <S2SV_EndBug> return ( ARCHIVE_WARN ) ; } metadata = malloc ( ( size_t ) rsrc -> uncompressed_size ) ; if ( metadata == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Mac<S2SV_blank>metadata\" ) ; return ( ARCHIVE_FATAL ) ; } if ( offset < rsrc -> local_header_offset ) __archive_read_consume ( a , rsrc -> local_header_offset - offset ) ; else if ( offset != rsrc -> local_header_offset ) { __archive_read_seek ( a , rsrc -> local_header_offset , SEEK_SET ) ; } hsize = zip_get_local_file_header_size ( a , 0 ) ; __archive_read_consume ( a , hsize ) ; remaining_bytes = ( size_t ) rsrc -> compressed_size ; metadata_bytes = ( size_t ) rsrc -> uncompressed_size ; mp = metadata ; eof = 0 ; while ( ! eof && remaining_bytes ) { const unsigned char * p ; ssize_t bytes_avail ; size_t bytes_used ; p = __archive_read_ahead ( a , 1 , & bytes_avail ) ; if ( p == NULL ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Truncated<S2SV_blank>ZIP<S2SV_blank>file<S2SV_blank>header\" ) ; ret = ARCHIVE_WARN ; goto exit_mac_metadata ; } if ( ( size_t ) bytes_avail > remaining_bytes ) bytes_avail = remaining_bytes ; switch ( rsrc -> compression ) { case 0 : <S2SV_StartBug> memcpy ( mp , p , bytes_avail ) ; <S2SV_EndBug> bytes_used = ( size_t ) bytes_avail ; metadata_bytes -= bytes_used ; mp += bytes_used ; if ( metadata_bytes == 0 ) eof = 1 ; break ; # ifdef HAVE_ZLIB_H case 8 : { int r ; ret = zip_deflate_init ( a , zip ) ; if ( ret != ARCHIVE_OK ) goto exit_mac_metadata ; zip -> stream . next_in = ( Bytef * ) ( uintptr_t ) ( const void * ) p ; zip -> stream . avail_in = ( uInt ) bytes_avail ; zip -> stream . total_in = 0 ; zip -> stream . next_out = mp ; zip -> stream . avail_out = ( uInt ) metadata_bytes ; zip -> stream . total_out = 0 ; r = inflate ( & zip -> stream , 0 ) ; switch ( r ) { case Z_OK : break ; case Z_STREAM_END : eof = 1 ; break ; case Z_MEM_ERROR : archive_set_error ( & a -> archive , ENOMEM , \"Out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>ZIP<S2SV_blank>decompression\" ) ; ret = ARCHIVE_FATAL ; goto exit_mac_metadata ; default : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"ZIP<S2SV_blank>decompression<S2SV_blank>failed<S2SV_blank>(%d)\" , r ) ; ret = ARCHIVE_FATAL ; goto exit_mac_metadata ; } bytes_used = zip -> stream . total_in ; metadata_bytes -= zip -> stream . total_out ; mp += zip -> stream . total_out ; break ; } # endif default : bytes_used = 0 ; break ; } __archive_read_consume ( a , bytes_used ) ; remaining_bytes -= bytes_used ; } archive_entry_copy_mac_metadata ( entry , metadata , ( size_t ) rsrc -> uncompressed_size - metadata_bytes ) ; exit_mac_metadata : __archive_read_seek ( a , offset , SEEK_SET ) ; zip -> decompress_init = 0 ; free ( metadata ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 0 : if ( rsrc -> uncompressed_size != rsrc -> compressed_size ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Malformed<S2SV_blank>OS<S2SV_blank>X<S2SV_blank>metadata<S2SV_blank>entry:<S2SV_blank>inconsistent<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } <S2SV_ModStart> rsrc -> uncompressed_size ) ; return ( ARCHIVE_WARN ) ; } if ( rsrc -> compressed_size > ( 4 * 1024 * 1024 ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Mac<S2SV_blank>metadata<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%jd<S2SV_blank>><S2SV_blank>4M<S2SV_blank>bytes\" , ( intmax_t ) rsrc -> compressed_size <S2SV_ModStart> case 0 : if ( ( size_t ) bytes_avail > metadata_bytes ) bytes_avail = metadata_bytes ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26927\n\n```\nCWE-476 jas_image_t * jp2_decode ( jas_stream_t * in , const char * optstr ) { jp2_box_t * box ; int found ; jas_image_t * image ; jp2_dec_t * dec ; bool samedtype ; int dtype ; unsigned int i ; jp2_cmap_t * cmapd ; jp2_pclr_t * pclrd ; jp2_cdef_t * cdefd ; unsigned int channo ; int newcmptno ; int_fast32_t * lutents ; # if 0 jp2_cdefchan_t * cdefent ; int cmptno ; # endif jp2_cmapent_t * cmapent ; jas_icchdr_t icchdr ; jas_iccprof_t * iccprof ; dec = 0 ; box = 0 ; image = 0 ; JAS_DBGLOG ( 100 , ( \"jp2_decode(%p,<S2SV_blank>\\\\\"%s\\\\\")\\\\n\" , in , optstr ) ) ; if ( ! ( dec = jp2_dec_create ( ) ) ) { goto error ; } if ( ! ( box = jp2_box_get ( in ) ) ) { jas_eprintf ( \"error:<S2SV_blank>cannot<S2SV_blank>get<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( box -> type != JP2_BOX_JP ) { jas_eprintf ( \"error:<S2SV_blank>expecting<S2SV_blank>signature<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( box -> data . jp . magic != JP2_JP_MAGIC ) { jas_eprintf ( \"incorrect<S2SV_blank>magic<S2SV_blank>number\\\\n\" ) ; goto error ; } jp2_box_destroy ( box ) ; box = 0 ; if ( ! ( box = jp2_box_get ( in ) ) ) { goto error ; } if ( box -> type != JP2_BOX_FTYP ) { jas_eprintf ( \"expecting<S2SV_blank>file<S2SV_blank>type<S2SV_blank>box\\\\n\" ) ; goto error ; } jp2_box_destroy ( box ) ; box = 0 ; found = 0 ; while ( ( box = jp2_box_get ( in ) ) ) { if ( jas_getdbglevel ( ) >= 1 ) { jas_eprintf ( \"got<S2SV_blank>box<S2SV_blank>type<S2SV_blank>%s\\\\n\" , box -> info -> name ) ; } switch ( box -> type ) { case JP2_BOX_JP2C : found = 1 ; break ; case JP2_BOX_IHDR : if ( ! dec -> ihdr ) { dec -> ihdr = box ; box = 0 ; } break ; case JP2_BOX_BPCC : if ( ! dec -> bpcc ) { dec -> bpcc = box ; box = 0 ; } break ; case JP2_BOX_CDEF : if ( ! dec -> cdef ) { dec -> cdef = box ; box = 0 ; } break ; case JP2_BOX_PCLR : if ( ! dec -> pclr ) { dec -> pclr = box ; box = 0 ; } break ; case JP2_BOX_CMAP : if ( ! dec -> cmap ) { dec -> cmap = box ; box = 0 ; } break ; case JP2_BOX_COLR : if ( ! dec -> colr ) { dec -> colr = box ; box = 0 ; } break ; } if ( box ) { jp2_box_destroy ( box ) ; box = 0 ; } if ( found ) { break ; } } if ( ! found ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>code<S2SV_blank>stream<S2SV_blank>found\\\\n\" ) ; goto error ; } if ( ! ( dec -> image = jpc_decode ( in , optstr ) ) ) { jas_eprintf ( \"error:<S2SV_blank>cannot<S2SV_blank>decode<S2SV_blank>code<S2SV_blank>stream\\\\n\" ) ; goto error ; } if ( ! dec -> ihdr ) { jas_eprintf ( \"error:<S2SV_blank>missing<S2SV_blank>IHDR<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( dec -> ihdr -> data . ihdr . numcmpts != JAS_CAST ( jas_uint , jas_image_numcmpts ( dec -> image ) ) ) { <S2SV_StartBug> jas_eprintf ( \"warning:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>mismatch\\\\n\" ) ; <S2SV_EndBug> } if ( ! jas_image_numcmpts ( dec -> image ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>components\\\\n\" ) ; goto error ; } samedtype = true ; dtype = jas_image_cmptdtype ( dec -> image , 0 ) ; for ( i = 1 ; i < JAS_CAST ( jas_uint , jas_image_numcmpts ( dec -> image ) ) ; ++ i ) { if ( jas_image_cmptdtype ( dec -> image , i ) != dtype ) { samedtype = false ; break ; } } if ( ( samedtype && dec -> ihdr -> data . ihdr . bpc != JP2_DTYPETOBPC ( dtype ) ) || ( ! samedtype && dec -> ihdr -> data . ihdr . bpc != JP2_IHDR_BPCNULL ) ) { <S2SV_StartBug> jas_eprintf ( \"warning:<S2SV_blank>component<S2SV_blank>data<S2SV_blank>type<S2SV_blank>mismatch<S2SV_blank>(IHDR)\\\\n\" ) ; <S2SV_EndBug> } if ( dec -> ihdr -> data . ihdr . comptype != JP2_IHDR_COMPTYPE ) { jas_eprintf ( \"error:<S2SV_blank>unsupported<S2SV_blank>compression<S2SV_blank>type\\\\n\" ) ; goto error ; } if ( dec -> bpcc ) { if ( dec -> bpcc -> data . bpcc . numcmpts != JAS_CAST ( jas_uint , jas_image_numcmpts ( <S2SV_StartBug> dec -> image ) ) ) { <S2SV_EndBug> jas_eprintf ( \"warning:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>mismatch\\\\n\" ) ; } if ( ! samedtype ) { for ( i = 0 ; i < JAS_CAST ( jas_uint , jas_image_numcmpts ( dec -> image ) ) ; ++ i ) { if ( jas_image_cmptdtype ( dec -> image , i ) != JP2_BPCTODTYPE ( dec -> bpcc -> data . bpcc . bpcs [ i ] ) ) { <S2SV_StartBug> jas_eprintf ( \"warning:<S2SV_blank>component<S2SV_blank>data<S2SV_blank>type<S2SV_blank>mismatch<S2SV_blank>(BPCC)\\\\n\" ) ; <S2SV_EndBug> } } } else { jas_eprintf ( \"warning:<S2SV_blank>superfluous<S2SV_blank>BPCC<S2SV_blank>box\\\\n\" ) ; } } if ( ! dec -> colr ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>COLR<S2SV_blank>box\\\\n\" ) ; goto error ; } switch ( dec -> colr -> data . colr . method ) { case JP2_COLR_ENUM : jas_image_setclrspc ( dec -> image , jp2_getcs ( & dec -> colr -> data . colr ) ) ; break ; case JP2_COLR_ICC : iccprof = jas_iccprof_createfrombuf ( dec -> colr -> data . colr . iccp , dec -> colr -> data . colr . iccplen ) ; if ( ! iccprof ) { jas_eprintf ( \"error:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>ICC<S2SV_blank>profile\\\\n\" ) ; goto error ; } jas_iccprof_gethdr ( iccprof , & icchdr ) ; jas_eprintf ( \"ICC<S2SV_blank>Profile<S2SV_blank>CS<S2SV_blank>%08x\\\\n\" , icchdr . colorspc ) ; jas_image_setclrspc ( dec -> image , fromiccpcs ( icchdr . colorspc ) ) ; dec -> image -> cmprof_ = jas_cmprof_createfromiccprof ( iccprof ) ; if ( ! dec -> image -> cmprof_ ) { jas_iccprof_destroy ( iccprof ) ; goto error ; } jas_iccprof_destroy ( iccprof ) ; break ; } if ( dec -> cmap && ! dec -> pclr ) { jas_eprintf ( \"warning:<S2SV_blank>missing<S2SV_blank>PCLR<S2SV_blank>box<S2SV_blank>or<S2SV_blank>superfluous<S2SV_blank>CMAP<S2SV_blank>box\\\\n\" ) ; jp2_box_destroy ( dec -> cmap ) ; dec -> cmap = 0 ; } if ( ! dec -> cmap && dec -> pclr ) { jas_eprintf ( \"warning:<S2SV_blank>missing<S2SV_blank>CMAP<S2SV_blank>box<S2SV_blank>or<S2SV_blank>superfluous<S2SV_blank>PCLR<S2SV_blank>box\\\\n\" ) ; jp2_box_destroy ( dec -> pclr ) ; dec -> pclr = 0 ; } dec -> numchans = dec -> cmap ? dec -> cmap -> data . cmap . numchans : JAS_CAST ( jas_uint , jas_image_numcmpts ( dec -> image ) ) ; if ( dec -> cmap ) { for ( i = 0 ; i < dec -> numchans ; ++ i ) { if ( dec -> cmap -> data . cmap . ents [ i ] . cmptno >= JAS_CAST ( jas_uint , jas_image_numcmpts ( dec -> image ) ) ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>component<S2SV_blank>number<S2SV_blank>in<S2SV_blank>CMAP<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( dec -> cmap -> data . cmap . ents [ i ] . pcol >= dec -> pclr -> data . pclr . numchans ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>CMAP<S2SV_blank>LUT<S2SV_blank>index\\\\n\" ) ; goto error ; } } } if ( ! ( dec -> chantocmptlut = jas_alloc2 ( dec -> numchans , sizeof ( uint_fast16_t ) ) ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>memory\\\\n\" ) ; goto error ; } if ( ! dec -> cmap ) { for ( i = 0 ; i < dec -> numchans ; ++ i ) { dec -> chantocmptlut [ i ] = i ; } } else { cmapd = & dec -> cmap -> data . cmap ; pclrd = & dec -> pclr -> data . pclr ; cdefd = & dec -> cdef -> data . cdef ; for ( channo = 0 ; channo < cmapd -> numchans ; ++ channo ) { cmapent = & cmapd -> ents [ channo ] ; if ( cmapent -> map == JP2_CMAP_DIRECT ) { dec -> chantocmptlut [ channo ] = channo ; } else if ( cmapent -> map == JP2_CMAP_PALETTE ) { if ( ! pclrd -> numlutents ) { goto error ; } lutents = jas_alloc2 ( pclrd -> numlutents , sizeof ( int_fast32_t ) ) ; if ( ! lutents ) { goto error ; } for ( i = 0 ; i < pclrd -> numlutents ; ++ i ) { lutents [ i ] = pclrd -> lutdata [ cmapent -> pcol + i * pclrd -> numchans ] ; } newcmptno = jas_image_numcmpts ( dec -> image ) ; jas_image_depalettize ( dec -> image , cmapent -> cmptno , pclrd -> numlutents , lutents , JP2_BPCTODTYPE ( pclrd -> bpc [ cmapent -> pcol ] ) , newcmptno ) ; dec -> chantocmptlut [ channo ] = newcmptno ; jas_free ( lutents ) ; # if 0 if ( dec -> cdef ) { cdefent = jp2_cdef_lookup ( cdefd , channo ) ; if ( ! cdefent ) { abort ( ) ; } jas_image_setcmpttype ( dec -> image , newcmptno , jp2_getct ( jas_image_clrspc ( dec -> image ) , cdefent -> type , cdefent -> assoc ) ) ; } else { jas_image_setcmpttype ( dec -> image , newcmptno , jp2_getct ( jas_image_clrspc ( dec -> image ) , 0 , channo + 1 ) ) ; } # else ( void ) cdefd ; # endif } else { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>MTYP<S2SV_blank>in<S2SV_blank>CMAP<S2SV_blank>box\\\\n\" ) ; goto error ; } } } if ( dec -> numchans != jas_image_numcmpts ( dec -> image ) ) { jas_eprintf ( \"error:<S2SV_blank>mismatch<S2SV_blank>in<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>(%d<S2SV_blank>!=<S2SV_blank>%d)\\\\n\" , dec -> numchans , jas_image_numcmpts ( dec -> image ) ) ; goto error ; } for ( i = 0 ; i < JAS_CAST ( jas_uint , jas_image_numcmpts ( dec -> image ) ) ; ++ i ) { jas_image_setcmpttype ( dec -> image , i , JAS_IMAGE_CT_UNKNOWN ) ; } if ( dec -> cdef ) { for ( i = 0 ; i < dec -> cdef -> data . cdef . numchans ; ++ i ) { if ( dec -> cdef -> data . cdef . ents [ i ] . channo >= dec -> numchans ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>channel<S2SV_blank>number<S2SV_blank>in<S2SV_blank>CDEF<S2SV_blank>box\\\\n\" ) ; goto error ; } jas_image_setcmpttype ( dec -> image , dec -> chantocmptlut [ dec -> cdef -> data . cdef . ents [ i ] . channo ] , jp2_getct ( jas_image_clrspc ( dec -> image ) , dec -> cdef -> data . cdef . ents [ i ] . type , dec -> cdef -> data . cdef . ents [ i ] . assoc ) ) ; } } else { for ( i = 0 ; i < dec -> numchans ; ++ i ) { jas_image_setcmpttype ( dec -> image , dec -> chantocmptlut [ i ] , jp2_getct ( jas_image_clrspc ( dec -> image ) , 0 , i + 1 ) ) ; } } for ( i = jas_image_numcmpts ( dec -> image ) ; i > 0 ; -- i ) { if ( jas_image_cmpttype ( dec -> image , i - 1 ) == JAS_IMAGE_CT_UNKNOWN ) { jas_image_delcmpt ( dec -> image , i - 1 ) ; } } if ( ! jas_image_numcmpts ( dec -> image ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>components\\\\n\" ) ; goto error ; } # if 0 jas_eprintf ( \"no<S2SV_blank>of<S2SV_blank>components<S2SV_blank>is<S2SV_blank>%d\\\\n\" , jas_image_numcmpts ( dec -> image ) ) ; # endif image = dec -> image ; dec -> image = 0 ; jp2_dec_destroy ( dec ) ; return image ; error : if ( box ) { jp2_box_destroy ( box ) ; } if ( dec ) { jp2_dec_destroy ( dec ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { jas_eprintf ( \"error:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>mismatch<S2SV_blank>(IHDR)\\\\n\" ) ; goto error <S2SV_ModEnd> ; } if <S2SV_ModStart> { jas_eprintf ( \"error:<S2SV_blank>component<S2SV_blank>data<S2SV_blank>type<S2SV_blank>mismatch<S2SV_blank>(IHDR)\\\\n\" ) ; goto error <S2SV_ModEnd> ; } if <S2SV_ModStart> , jas_image_numcmpts ( dec -> image ) ) ) { jas_eprintf ( \"error:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>mismatch<S2SV_blank>(BPCC)\\\\n\" ) ; goto error <S2SV_ModEnd> ; } if <S2SV_ModStart> { jas_eprintf ( \"error:<S2SV_blank>component<S2SV_blank>data<S2SV_blank>type<S2SV_blank>mismatch<S2SV_blank>(BPCC)\\\\n\" ) ; goto error <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 date PGTYPESdate_from_asc ( char * str , char * * endptr ) { date dDate ; fsec_t fsec ; struct tm tt , * tm = & tt ; int dtype ; int nf ; char * field [ MAXDATEFIELDS ] ; int ftype [ MAXDATEFIELDS ] ; <S2SV_StartBug> char lowstr [ MAXDATELEN + 1 ] ; <S2SV_EndBug> char * realptr ; char * * ptr = ( endptr != NULL ) ? endptr : & realptr ; bool EuroDates = FALSE ; errno = 0 ; <S2SV_StartBug> if ( strlen ( str ) >= sizeof ( lowstr ) ) <S2SV_EndBug> { errno = PGTYPES_DATE_BAD_DATE ; return INT_MIN ; } if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || DecodeDateTime ( field , ftype , nf , & dtype , tm , & fsec , EuroDates ) != 0 ) { errno = PGTYPES_DATE_BAD_DATE ; return INT_MIN ; } switch ( dtype ) { case DTK_DATE : break ; case DTK_EPOCH : if ( GetEpochTime ( tm ) < 0 ) { errno = PGTYPES_DATE_BAD_DATE ; return INT_MIN ; } break ; default : errno = PGTYPES_DATE_BAD_DATE ; return INT_MIN ; } dDate = ( date2j ( tm -> tm_year , tm -> tm_mon , tm -> tm_mday ) - date2j ( 2000 , 1 , 1 ) ) ; return dDate ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ MAXDATELEN + MAXDATEFIELDS <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( str ) > MAXDATELEN <S2SV_ModEnd> ) { errno\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-674 void js_RegExp_prototype_exec ( js_State * J , js_Regexp * re , const char * text ) { <S2SV_StartBug> int i ; <S2SV_EndBug> int opts ; Resub m ; opts = 0 ; if ( re -> flags & JS_REGEXP_G ) { if ( re -> last > strlen ( text ) ) { re -> last = 0 ; js_pushnull ( J ) ; return ; } if ( re -> last > 0 ) { text += re -> last ; opts |= REG_NOTBOL ; } } <S2SV_StartBug> if ( ! js_regexec ( re -> prog , text , & m , opts ) ) { <S2SV_EndBug> js_newarray ( J ) ; js_pushstring ( J , text ) ; js_setproperty ( J , - 2 , \"input\" ) ; js_pushnumber ( J , js_utfptrtoidx ( text , m . sub [ 0 ] . sp ) ) ; js_setproperty ( J , - 2 , \"index\" ) ; for ( i = 0 ; i < m . nsub ; ++ i ) { js_pushlstring ( J , m . sub [ i ] . sp , m . sub [ i ] . ep - m . sub [ i ] . sp ) ; js_setindex ( J , - 2 , i ) ; } if ( re -> flags & JS_REGEXP_G ) re -> last = re -> last + ( m . sub [ 0 ] . ep - text ) ; return ; } if ( re -> flags & JS_REGEXP_G ) re -> last = 0 ; js_pushnull ( J ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { int result ; int <S2SV_ModStart> ; } } result = <S2SV_ModEnd> js_regexec ( re <S2SV_ModStart> , opts ) ; if ( result < 0 ) js_error ( J , \"regexec<S2SV_blank>failed\" ) ; if ( result == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18344\n\n```\nCWE-125 static struct pid * good_sigevent ( sigevent_t * event ) { struct task_struct * rtn = current -> group_leader ; <S2SV_StartBug> if ( ( event -> sigev_notify & SIGEV_THREAD_ID ) && <S2SV_EndBug> <S2SV_StartBug> ( ! ( rtn = find_task_by_vpid ( event -> sigev_notify_thread_id ) ) || <S2SV_EndBug> <S2SV_StartBug> ! same_thread_group ( rtn , current ) || <S2SV_EndBug> ( event -> sigev_notify & ~ SIGEV_THREAD_ID ) != SIGEV_SIGNAL ) ) return NULL ; <S2SV_StartBug> if ( ( ( event -> sigev_notify & ~ SIGEV_THREAD_ID ) != SIGEV_NONE ) && <S2SV_EndBug> <S2SV_StartBug> ( ( event -> sigev_signo <= 0 ) || ( event -> sigev_signo > SIGRTMAX ) ) ) <S2SV_EndBug> <S2SV_StartBug> return NULL ; <S2SV_EndBug> return task_pid ( rtn ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> group_leader ; switch <S2SV_ModEnd> ( event -> <S2SV_ModStart> event -> sigev_notify ) { case SIGEV_SIGNAL | SIGEV_THREAD_ID : <S2SV_ModEnd> rtn = find_task_by_vpid <S2SV_ModStart> -> sigev_notify_thread_id ) ; if ( ! rtn <S2SV_ModEnd> || ! same_thread_group <S2SV_ModStart> , current ) <S2SV_ModEnd> ) return NULL <S2SV_ModStart> return NULL ; case SIGEV_SIGNAL : case SIGEV_THREAD : if <S2SV_ModEnd> ( event -> <S2SV_ModStart> sigev_signo <= 0 || <S2SV_ModEnd> event -> sigev_signo <S2SV_ModStart> > SIGRTMAX ) <S2SV_ModEnd> return NULL ; <S2SV_ModStart> return NULL ; case SIGEV_NONE : <S2SV_ModStart> rtn ) ; default : return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3980\n\n```\nCWE-264 int _fep_open_control_socket ( Fep * fep ) { struct sockaddr_un sun ; char * path ; int fd ; ssize_t sun_len ; fd = socket ( AF_UNIX , SOCK_STREAM , 0 ) ; if ( fd < 0 ) { perror ( \"socket\" ) ; return - 1 ; } path = create_socket_name ( \"fep-XXXXXX/control\" ) ; if ( strlen ( path ) + 1 >= sizeof ( sun . sun_path ) ) { fep_log ( FEP_LOG_LEVEL_WARNING , \"unix<S2SV_blank>domain<S2SV_blank>socket<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long:<S2SV_blank>%d<S2SV_blank>+<S2SV_blank>1<S2SV_blank>>=<S2SV_blank>%d\" , strlen ( path ) , sizeof ( sun . sun_path ) ) ; free ( path ) ; return - 1 ; } memset ( & sun , 0 , sizeof ( sun ) ) ; sun . sun_family = AF_UNIX ; <S2SV_StartBug> # ifdef __linux__ <S2SV_EndBug> <S2SV_StartBug> sun . sun_path [ 0 ] = '\\\\0' ; <S2SV_EndBug> memcpy ( sun . sun_path + 1 , path , strlen ( path ) ) ; <S2SV_StartBug> sun_len = offsetof ( struct sockaddr_un , sun_path ) + strlen ( path ) + 1 ; <S2SV_EndBug> remove_control_socket ( path ) ; # else memcpy ( sun . sun_path , path , strlen ( path ) ) ; sun_len = sizeof ( struct sockaddr_un ) ; # endif if ( bind ( fd , ( const struct sockaddr * ) & sun , sun_len ) < 0 ) { perror ( \"bind\" ) ; free ( path ) ; close ( fd ) ; return - 1 ; } if ( listen ( fd , 5 ) < 0 ) { perror ( \"listen\" ) ; free ( path ) ; close ( fd ) ; return - 1 ; } fep -> server = fd ; fep -> control_socket_path = path ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = AF_UNIX ; memcpy ( <S2SV_ModEnd> sun . sun_path <S2SV_ModStart> sun . sun_path <S2SV_ModEnd> , path , <S2SV_ModStart> ; sun_len = sizeof <S2SV_ModEnd> ( struct sockaddr_un <S2SV_ModStart> ( struct sockaddr_un ) ; <S2SV_ModEnd> if ( bind\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5332\n\n```\nCWE-787 int rds_rdma_extra_size ( struct rds_rdma_args * args ) { struct rds_iovec vec ; struct rds_iovec __user * local_vec ; int tot_pages = 0 ; unsigned int nr_pages ; unsigned int i ; <S2SV_StartBug> local_vec = ( struct rds_iovec __user * ) ( unsigned long ) args -> local_vec_addr ; <S2SV_EndBug> for ( i = 0 ; i < args -> nr_local ; i ++ ) { if ( copy_from_user ( & vec , & local_vec [ i ] , sizeof ( struct rds_iovec ) ) ) return - EFAULT ; nr_pages = rds_pages_in_vec ( & vec ) ; if ( nr_pages == 0 ) return - EINVAL ; tot_pages += nr_pages ; if ( tot_pages < 0 ) return - EINVAL ; } return tot_pages * sizeof ( struct scatterlist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> args -> local_vec_addr ; if ( args -> nr_local == 0 ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_yv12_de_alloc_frame_buffer ( YV12_BUFFER_CONFIG * ybf ) { if ( ybf ) { if ( ybf -> buffer_alloc_sz > 0 ) { vpx_free ( ybf -> buffer_alloc ) ; } <S2SV_StartBug> vpx_memset ( ybf , 0 , sizeof ( YV12_BUFFER_CONFIG ) ) ; <S2SV_EndBug> } else { return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } memset <S2SV_ModEnd> ( ybf ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-345(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20271\n\n```\nCWE-345 rpmRC rpmReadPackageFile ( rpmts ts , FD_t fd , const char * fn , Header * hdrp ) { char * msg = NULL ; Header h = NULL ; Header sigh = NULL ; hdrblob blob = NULL ; hdrblob sigblob = NULL ; rpmVSFlags vsflags = rpmtsVSFlags ( ts ) | RPMVSF_NEEDPAYLOAD ; rpmKeyring keyring = rpmtsGetKeyring ( ts , 1 ) ; struct rpmvs_s * vs = rpmvsCreate ( 0 , vsflags , keyring ) ; struct pkgdata_s pkgdata = { . msgfunc = loghdrmsg , . fn = fn ? fn : Fdescr ( fd ) , . msg = NULL , . rc = RPMRC_OK , } ; if ( hdrp ) * hdrp = NULL ; rpmRC rc = rpmpkgRead ( vs , fd , & sigblob , & blob , & msg ) ; if ( rc ) goto exit ; rc = RPMRC_FAIL ; if ( ! rpmvsVerify ( vs , RPMSIG_VERIFIABLE_TYPE , handleHdrVS , & pkgdata ) ) { if ( hdrp ) { if ( hdrblobImport ( sigblob , 0 , & sigh , & msg ) ) goto exit ; if ( hdrblobImport ( blob , 0 , & h , & msg ) ) goto exit ; <S2SV_StartBug> headerMergeLegacySigs ( h , sigh ) ; <S2SV_EndBug> applyRetrofits ( h ) ; * hdrp = headerLink ( h ) ; } rc = RPMRC_OK ; } if ( rc == RPMRC_OK && pkgdata . rc ) rc = pkgdata . rc ; exit : if ( rc && msg ) rpmlog ( RPMLOG_ERR , \"%s:<S2SV_blank>%s\\\\n\" , Fdescr ( fd ) , msg ) ; hdrblobFree ( sigblob ) ; hdrblobFree ( blob ) ; headerFree ( sigh ) ; headerFree ( h ) ; rpmKeyringFree ( keyring ) ; rpmvsFree ( vs ) ; free ( msg ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto exit ; if ( <S2SV_ModStart> h , sigh , & msg ) ) goto exit <S2SV_ModEnd> ; applyRetrofits (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1927\n\n```\nCWE-000 static void ip_expire ( unsigned long arg ) { struct ipq * qp ; struct net * net ; qp = container_of ( ( struct inet_frag_queue * ) arg , struct ipq , q ) ; net = container_of ( qp -> q . net , struct net , ipv4 . frags ) ; spin_lock ( & qp -> q . lock ) ; if ( qp -> q . last_in & INET_FRAG_COMPLETE ) goto out ; ipq_kill ( qp ) ; IP_INC_STATS_BH ( net , IPSTATS_MIB_REASMTIMEOUT ) ; IP_INC_STATS_BH ( net , IPSTATS_MIB_REASMFAILS ) ; if ( ( qp -> q . last_in & INET_FRAG_FIRST_IN ) && qp -> q . fragments != NULL ) { struct sk_buff * head = qp -> q . fragments ; <S2SV_StartBug> rcu_read_lock ( ) ; <S2SV_EndBug> head -> dev = dev_get_by_index_rcu ( net , qp -> iif ) ; <S2SV_StartBug> if ( ! head -> dev ) <S2SV_EndBug> goto out_rcu_unlock ; <S2SV_StartBug> if ( qp -> user == IP_DEFRAG_CONNTRACK_IN && ! skb_dst ( head ) ) { <S2SV_EndBug> const struct iphdr * iph = ip_hdr ( head ) ; int err = ip_route_input ( head , iph -> daddr , iph -> saddr , iph -> tos , head -> dev ) ; if ( unlikely ( err ) ) goto out_rcu_unlock ; if ( skb_rtable ( head ) -> rt_type != RTN_LOCAL ) goto out_rcu_unlock ; <S2SV_StartBug> } <S2SV_EndBug> icmp_send ( head , ICMP_TIME_EXCEEDED , ICMP_EXC_FRAGTIME , 0 ) ; out_rcu_unlock : rcu_read_unlock ( ) ; } out : spin_unlock ( & qp -> q . lock ) ; ipq_put ( qp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . fragments ; const struct iphdr * iph ; int err ; <S2SV_ModStart> head -> dev ) goto out_rcu_unlock ; skb_dst_drop ( head ) ; iph = ip_hdr ( head ) ; err = ip_route_input_noref ( head , iph -> daddr , iph -> saddr , iph -> tos , head -> dev ) ; if ( err <S2SV_ModStart> == IP_DEFRAG_CONNTRACK_IN && <S2SV_ModEnd> skb_rtable ( head <S2SV_ModStart> goto out_rcu_unlock ; <S2SV_ModEnd> icmp_send ( head\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18445\n\n```\nCWE-125 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; <S2SV_StartBug> u64 insn_bitness = ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) ? 64 : 32 ; <S2SV_EndBug> smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; if ( ( src_known && ( smin_val != smax_val || umin_val != umax_val ) ) || smin_val > smax_val || umin_val > umax_val ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } if ( ! src_known && opcode != BPF_ADD && opcode != BPF_SUB && opcode != BPF_AND ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } switch ( opcode ) { case BPF_ADD : if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_ARSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value >>= umin_val ; dst_reg -> smax_value >>= umin_val ; dst_reg -> var_off = tnum_arshift ( dst_reg -> var_off , umin_val ) ; dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { coerce_reg_to_size ( dst_reg , 4 ) ; <S2SV_StartBug> coerce_reg_to_size ( & src_reg , 4 ) ; <S2SV_EndBug> } __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : 32 ; if ( insn_bitness == 32 ) { coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size ( & src_reg , 4 ) ; } <S2SV_ModStart> 4 ) ; <S2SV_ModEnd> } __reg_deduce_bounds (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2706\n\n```\nCWE-362 void ieee80211_sta_ps_deliver_wakeup ( struct sta_info * sta ) { struct ieee80211_sub_if_data * sdata = sta -> sdata ; struct ieee80211_local * local = sdata -> local ; struct sk_buff_head pending ; int filtered = 0 , buffered = 0 , ac ; unsigned long flags ; clear_sta_flag ( sta , WLAN_STA_SP ) ; BUILD_BUG_ON ( BITS_TO_LONGS ( IEEE80211_NUM_TIDS ) > 1 ) ; sta -> driver_buffered_tids = 0 ; if ( ! ( local -> hw . flags & IEEE80211_HW_AP_LINK_PS ) ) drv_sta_notify ( local , sdata , STA_NOTIFY_AWAKE , & sta -> sta ) ; skb_queue_head_init ( & pending ) ; <S2SV_StartBug> for ( ac = 0 ; ac < IEEE80211_NUM_ACS ; ac ++ ) { <S2SV_EndBug> int count = skb_queue_len ( & pending ) , tmp ; spin_lock_irqsave ( & sta -> tx_filtered [ ac ] . lock , flags ) ; skb_queue_splice_tail_init ( & sta -> tx_filtered [ ac ] , & pending ) ; spin_unlock_irqrestore ( & sta -> tx_filtered [ ac ] . lock , flags ) ; tmp = skb_queue_len ( & pending ) ; filtered += tmp - count ; count = tmp ; spin_lock_irqsave ( & sta -> ps_tx_buf [ ac ] . lock , flags ) ; skb_queue_splice_tail_init ( & sta -> ps_tx_buf [ ac ] , & pending ) ; spin_unlock_irqrestore ( & sta -> ps_tx_buf [ ac ] . lock , flags ) ; tmp = skb_queue_len ( & pending ) ; buffered += tmp - count ; } <S2SV_StartBug> ieee80211_add_pending_skbs_fn ( local , & pending , clear_sta_ps_flags , sta ) ; <S2SV_EndBug> if ( ! ieee80211_smps_is_restrictive ( sta -> known_smps_mode , sdata -> smps_mode ) && sta -> known_smps_mode != sdata -> bss -> req_smps && sta_info_tx_streams ( sta ) != 1 ) { ht_dbg ( sdata , \"%pM<S2SV_blank>just<S2SV_blank>woke<S2SV_blank>up<S2SV_blank>and<S2SV_blank>MIMO<S2SV_blank>capable<S2SV_blank>-<S2SV_blank>update<S2SV_blank>SMPS\\\\n\" , sta -> sta . addr ) ; ieee80211_send_smps_action ( sdata , sdata -> bss -> req_smps , sta -> sta . addr , sdata -> vif . bss_conf . bssid ) ; } local -> total_ps_buffered -= buffered ; sta_info_recalc_tim ( sta ) ; ps_dbg ( sdata , \"STA<S2SV_blank>%pM<S2SV_blank>aid<S2SV_blank>%d<S2SV_blank>sending<S2SV_blank>%d<S2SV_blank>filtered/%d<S2SV_blank>PS<S2SV_blank>frames<S2SV_blank>since<S2SV_blank>STA<S2SV_blank>not<S2SV_blank>sleeping<S2SV_blank>anymore\\\\n\" , sta -> sta . addr , sta -> sta . aid , filtered , buffered ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pending ) ; spin_lock ( & sta -> ps_lock ) ; <S2SV_ModStart> clear_sta_ps_flags , sta ) ; spin_unlock ( & sta -> ps_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 void iperf_on_connect ( struct iperf_test * test ) { time_t now_secs ; const char * rfc1123_fmt = \"%a,<S2SV_blank>%d<S2SV_blank>%b<S2SV_blank>%Y<S2SV_blank>%H:%M:%S<S2SV_blank>GMT\" ; char now_str [ 100 ] ; char ipr [ INET6_ADDRSTRLEN ] ; int port ; struct sockaddr_storage sa ; struct sockaddr_in * sa_inP ; struct sockaddr_in6 * sa_in6P ; socklen_t len ; int opt ; now_secs = time ( ( time_t * ) 0 ) ; ( void ) strftime ( now_str , sizeof ( now_str ) , rfc1123_fmt , gmtime ( & now_secs ) ) ; if ( test -> json_output ) cJSON_AddItemToObject ( test -> json_start , \"timestamp\" , iperf_json_printf ( \"time:<S2SV_blank>%s<S2SV_blank><S2SV_blank>timesecs:<S2SV_blank>%d\" , now_str , ( int64_t ) now_secs ) ) ; else if ( test -> verbose ) iprintf ( test , report_time , now_str ) ; if ( test -> role == 'c' ) { if ( test -> json_output ) cJSON_AddItemToObject ( test -> json_start , \"connecting_to\" , iperf_json_printf ( \"host:<S2SV_blank>%s<S2SV_blank><S2SV_blank>port:<S2SV_blank>%d\" , test -> server_hostname , ( int64_t ) test -> server_port ) ) ; else { iprintf ( test , report_connecting , test -> server_hostname , test -> server_port ) ; if ( test -> reverse ) iprintf ( test , report_reverse , test -> server_hostname ) ; } } else { len = sizeof ( sa ) ; getpeername ( test -> ctrl_sck , ( struct sockaddr * ) & sa , & len ) ; if ( getsockdomain ( test -> ctrl_sck ) == AF_INET ) { sa_inP = ( struct sockaddr_in * ) & sa ; inet_ntop ( AF_INET , & sa_inP -> sin_addr , ipr , sizeof ( ipr ) ) ; port = ntohs ( sa_inP -> sin_port ) ; } else { sa_in6P = ( struct sockaddr_in6 * ) & sa ; inet_ntop ( AF_INET6 , & sa_in6P -> sin6_addr , ipr , sizeof ( ipr ) ) ; port = ntohs ( sa_in6P -> sin6_port ) ; } mapped_v4_to_regular_v4 ( ipr ) ; if ( test -> json_output ) cJSON_AddItemToObject ( test -> json_start , \"accepted_connection\" , iperf_json_printf ( \"host:<S2SV_blank>%s<S2SV_blank><S2SV_blank>port:<S2SV_blank>%d\" , ipr , ( int64_t ) port ) ) ; else iprintf ( test , report_accepted , ipr , port ) ; } if ( test -> json_output ) { cJSON_AddStringToObject ( test -> json_start , \"cookie\" , test -> cookie ) ; if ( test -> protocol -> id == SOCK_STREAM ) { if ( test -> settings -> mss ) <S2SV_StartBug> cJSON_AddIntToObject ( test -> json_start , \"tcp_mss\" , test -> settings -> mss ) ; <S2SV_EndBug> else { len = sizeof ( opt ) ; getsockopt ( test -> ctrl_sck , IPPROTO_TCP , TCP_MAXSEG , & opt , & len ) ; <S2SV_StartBug> cJSON_AddIntToObject ( test -> json_start , \"tcp_mss_default\" , opt ) ; <S2SV_EndBug> } } } else if ( test -> verbose ) { iprintf ( test , report_cookie , test -> cookie ) ; if ( test -> protocol -> id == SOCK_STREAM ) { if ( test -> settings -> mss ) iprintf ( test , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>TCP<S2SV_blank>MSS:<S2SV_blank>%d\\\\n\" , test -> settings -> mss ) ; else { len = sizeof ( opt ) ; getsockopt ( test -> ctrl_sck , IPPROTO_TCP , TCP_MAXSEG , & opt , & len ) ; iprintf ( test , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>TCP<S2SV_blank>MSS:<S2SV_blank>%d<S2SV_blank>(default)\\\\n\" , opt ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mss ) cJSON_AddNumberToObject <S2SV_ModEnd> ( test -> <S2SV_ModStart> len ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( test ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0101\n\n```\nCWE-476 sctp_disposition_t sctp_sf_do_5_1D_ce ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { struct sctp_chunk * chunk = arg ; struct sctp_association * new_asoc ; sctp_init_chunk_t * peer_init ; struct sctp_chunk * repl ; struct sctp_ulpevent * ev , * ai_ev = NULL ; int error = 0 ; struct sctp_chunk * err_chk_p ; struct sock * sk ; if ( ep == sctp_sk ( net -> sctp . ctl_sock ) -> ep ) { SCTP_INC_STATS ( net , SCTP_MIB_OUTOFBLUES ) ; return sctp_sf_tabort_8_4_8 ( net , ep , asoc , type , arg , commands ) ; } if ( ! sctp_chunk_length_valid ( chunk , sizeof ( sctp_chunkhdr_t ) ) ) return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; sk = ep -> base . sk ; if ( ! sctp_sstate ( sk , LISTENING ) || ( sctp_style ( sk , TCP ) && sk_acceptq_is_full ( sk ) ) ) return sctp_sf_tabort_8_4_8 ( net , ep , asoc , type , arg , commands ) ; chunk -> subh . cookie_hdr = ( struct sctp_signed_cookie * ) chunk -> skb -> data ; if ( ! pskb_pull ( chunk -> skb , ntohs ( chunk -> chunk_hdr -> length ) - sizeof ( sctp_chunkhdr_t ) ) ) goto nomem ; new_asoc = sctp_unpack_cookie ( ep , asoc , chunk , GFP_ATOMIC , & error , & err_chk_p ) ; if ( ! new_asoc ) { switch ( error ) { case - SCTP_IERROR_NOMEM : goto nomem ; case - SCTP_IERROR_STALE_COOKIE : sctp_send_stale_cookie_err ( net , ep , asoc , chunk , commands , err_chk_p ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; case - SCTP_IERROR_BAD_SIG : default : return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } } peer_init = & chunk -> subh . cookie_hdr -> c . peer_init [ 0 ] ; if ( ! sctp_process_init ( new_asoc , chunk , & chunk -> subh . cookie_hdr -> c . peer_addr , peer_init , GFP_ATOMIC ) ) goto nomem_init ; error = sctp_auth_asoc_init_active_key ( new_asoc , GFP_ATOMIC ) ; if ( error ) goto nomem_init ; if ( chunk -> auth_chunk ) { struct sctp_chunk auth ; sctp_ierror_t ret ; <S2SV_StartBug> auth . skb = chunk -> auth_chunk ; <S2SV_EndBug> auth . asoc = chunk -> asoc ; auth . sctp_hdr = chunk -> sctp_hdr ; auth . chunk_hdr = ( sctp_chunkhdr_t * ) skb_push ( chunk -> auth_chunk , sizeof ( sctp_chunkhdr_t ) ) ; skb_pull ( chunk -> auth_chunk , sizeof ( sctp_chunkhdr_t ) ) ; auth . transport = chunk -> transport ; ret = sctp_sf_authenticate ( net , ep , new_asoc , type , & auth ) ; kfree_skb ( chunk -> auth_chunk ) ; if ( ret != SCTP_IERROR_NO_ERROR ) { sctp_association_free ( new_asoc ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } } repl = sctp_make_cookie_ack ( new_asoc , chunk ) ; if ( ! repl ) goto nomem_init ; ev = sctp_ulpevent_make_assoc_change ( new_asoc , 0 , SCTP_COMM_UP , 0 , new_asoc -> c . sinit_num_ostreams , new_asoc -> c . sinit_max_instreams , NULL , GFP_ATOMIC ) ; if ( ! ev ) goto nomem_ev ; if ( new_asoc -> peer . adaptation_ind ) { ai_ev = sctp_ulpevent_make_adaptation_indication ( new_asoc , GFP_ATOMIC ) ; if ( ! ai_ev ) goto nomem_aiev ; } sctp_add_cmd_sf ( commands , SCTP_CMD_NEW_ASOC , SCTP_ASOC ( new_asoc ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_NEW_STATE , SCTP_STATE ( SCTP_STATE_ESTABLISHED ) ) ; SCTP_INC_STATS ( net , SCTP_MIB_CURRESTAB ) ; SCTP_INC_STATS ( net , SCTP_MIB_PASSIVEESTABS ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_HB_TIMERS_START , SCTP_NULL ( ) ) ; if ( new_asoc -> timeouts [ SCTP_EVENT_TIMEOUT_AUTOCLOSE ] ) sctp_add_cmd_sf ( commands , SCTP_CMD_TIMER_START , SCTP_TO ( SCTP_EVENT_TIMEOUT_AUTOCLOSE ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_REPLY , SCTP_CHUNK ( repl ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_EVENT_ULP , SCTP_ULPEVENT ( ev ) ) ; if ( ai_ev ) sctp_add_cmd_sf ( commands , SCTP_CMD_EVENT_ULP , SCTP_ULPEVENT ( ai_ev ) ) ; return SCTP_DISPOSITION_CONSUME ; nomem_aiev : sctp_ulpevent_free ( ev ) ; nomem_ev : sctp_chunk_free ( repl ) ; nomem_init : sctp_association_free ( new_asoc ) ; nomem : return SCTP_DISPOSITION_NOMEM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sctp_ierror_t ret ; if ( ! net -> sctp . auth_enable || ! new_asoc -> peer . auth_capable ) { kfree_skb ( chunk -> auth_chunk ) ; sctp_association_free ( new_asoc ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-416 int fscrypt_setup_filename ( struct inode * dir , const struct qstr * iname , int lookup , struct fscrypt_name * fname ) { int ret = 0 , bigname = 0 ; memset ( fname , 0 , sizeof ( struct fscrypt_name ) ) ; fname -> usr_fname = iname ; if ( ! dir -> i_sb -> s_cop -> is_encrypted ( dir ) || fscrypt_is_dot_dotdot ( iname ) ) { fname -> disk_name . name = ( unsigned char * ) iname -> name ; fname -> disk_name . len = iname -> len ; return 0 ; } <S2SV_StartBug> ret = fscrypt_get_crypt_info ( dir ) ; <S2SV_EndBug> if ( ret && ret != - EOPNOTSUPP ) return ret ; if ( dir -> i_crypt_info ) { ret = fscrypt_fname_alloc_buffer ( dir , iname -> len , & fname -> crypto_buf ) ; if ( ret ) return ret ; ret = fname_encrypt ( dir , iname , & fname -> crypto_buf ) ; if ( ret ) goto errout ; fname -> disk_name . name = fname -> crypto_buf . name ; fname -> disk_name . len = fname -> crypto_buf . len ; return 0 ; } if ( ! lookup ) return - ENOKEY ; if ( iname -> name [ 0 ] == '_' ) bigname = 1 ; if ( ( bigname && ( iname -> len != 33 ) ) || ( ! bigname && ( iname -> len > 43 ) ) ) return - ENOENT ; fname -> crypto_buf . name = kmalloc ( 32 , GFP_KERNEL ) ; if ( fname -> crypto_buf . name == NULL ) return - ENOMEM ; ret = digest_decode ( iname -> name + bigname , iname -> len - bigname , fname -> crypto_buf . name ) ; if ( ret < 0 ) { ret = - ENOENT ; goto errout ; } fname -> crypto_buf . len = ret ; if ( bigname ) { memcpy ( & fname -> hash , fname -> crypto_buf . name , 4 ) ; memcpy ( & fname -> minor_hash , fname -> crypto_buf . name + 4 , 4 ) ; } else { fname -> disk_name . name = fname -> crypto_buf . name ; fname -> disk_name . len = fname -> crypto_buf . len ; } return 0 ; errout : fscrypt_fname_free_buffer ( & fname -> crypto_buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } ret = fscrypt_get_encryption_info <S2SV_ModEnd> ( dir )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8322\n\n```\nCWE-787 int tcp_test ( const char * ip_str , const short port ) { int sock , i ; struct sockaddr_in s_in ; int packetsize = 1024 ; unsigned char packet [ packetsize ] ; struct timeval tv , tv2 , tv3 ; int caplen = 0 ; int times [ REQUESTS ] ; int min , avg , max , len ; struct net_hdr nh ; tv3 . tv_sec = 0 ; tv3 . tv_usec = 1 ; s_in . sin_family = PF_INET ; s_in . sin_port = htons ( port ) ; if ( ! inet_aton ( ip_str , & s_in . sin_addr ) ) return - 1 ; if ( ( sock = socket ( s_in . sin_family , SOCK_STREAM , IPPROTO_TCP ) ) == - 1 ) return - 1 ; if ( fcntl ( sock , F_SETFL , O_NONBLOCK ) < 0 ) { perror ( \"fcntl(O_NONBLOCK)<S2SV_blank>failed\" ) ; return ( 1 ) ; } gettimeofday ( & tv , NULL ) ; while ( 1 ) { if ( connect ( sock , ( struct sockaddr * ) & s_in , sizeof ( s_in ) ) == - 1 ) { if ( errno != EINPROGRESS && errno != EALREADY ) { perror ( \"connect\" ) ; close ( sock ) ; printf ( \"Failed<S2SV_blank>to<S2SV_blank>connect\\\\n\" ) ; return - 1 ; } } else { gettimeofday ( & tv2 , NULL ) ; break ; } gettimeofday ( & tv2 , NULL ) ; if ( ( ( tv2 . tv_sec * 1000000 - tv . tv_sec * 1000000 ) + ( tv2 . tv_usec - tv . tv_usec ) ) > ( 3000 * 1000 ) ) { printf ( \"Connection<S2SV_blank>timed<S2SV_blank>out\\\\n\" ) ; close ( sock ) ; return ( - 1 ) ; } usleep ( 10 ) ; } PCT ; printf ( \"TCP<S2SV_blank>connection<S2SV_blank>successful\\\\n\" ) ; memset ( & nh , 0 , sizeof ( nh ) ) ; nh . nh_type = 2 ; nh . nh_len = htonl ( 0 ) ; if ( send ( sock , & nh , sizeof ( nh ) , 0 ) != sizeof ( nh ) ) { perror ( \"send\" ) ; return - 1 ; } gettimeofday ( & tv , NULL ) ; i = 0 ; while ( 1 ) { caplen = read ( sock , & nh , sizeof ( nh ) ) ; if ( caplen == - 1 ) { if ( errno != EAGAIN ) { perror ( \"read\" ) ; return - 1 ; } } if ( ( unsigned ) caplen == sizeof ( nh ) ) { len = ntohl ( nh . nh_len ) ; <S2SV_StartBug> if ( nh . nh_type == 1 && i == 0 ) <S2SV_EndBug> { i = 1 ; caplen = read ( sock , packet , len ) ; if ( caplen == len ) { i = 2 ; break ; } else { i = 0 ; } } else { caplen = read ( sock , packet , len ) ; } } gettimeofday ( & tv2 , NULL ) ; if ( ( ( tv2 . tv_sec * 1000000 - tv . tv_sec * 1000000 ) + ( tv2 . tv_usec - tv . tv_usec ) ) > ( 1000 * 1000 ) ) { break ; } if ( caplen == - 1 ) usleep ( 10 ) ; } if ( i == 2 ) { PCT ; printf ( \"airserv-ng<S2SV_blank>found\\\\n\" ) ; } else { PCT ; printf ( \"airserv-ng<S2SV_blank>NOT<S2SV_blank>found\\\\n\" ) ; } close ( sock ) ; for ( i = 0 ; i < REQUESTS ; i ++ ) { if ( ( sock = socket ( s_in . sin_family , SOCK_STREAM , IPPROTO_TCP ) ) == - 1 ) return - 1 ; if ( fcntl ( sock , F_SETFL , O_NONBLOCK ) < 0 ) { perror ( \"fcntl(O_NONBLOCK)<S2SV_blank>failed\" ) ; return ( 1 ) ; } usleep ( 1000 ) ; gettimeofday ( & tv , NULL ) ; while ( 1 ) { if ( connect ( sock , ( struct sockaddr * ) & s_in , sizeof ( s_in ) ) == - 1 ) { if ( errno != EINPROGRESS && errno != EALREADY ) { perror ( \"connect\" ) ; close ( sock ) ; printf ( \"Failed<S2SV_blank>to<S2SV_blank>connect\\\\n\" ) ; return - 1 ; } } else { gettimeofday ( & tv2 , NULL ) ; break ; } gettimeofday ( & tv2 , NULL ) ; if ( ( ( tv2 . tv_sec * 1000000 - tv . tv_sec * 1000000 ) + ( tv2 . tv_usec - tv . tv_usec ) ) > ( 1000 * 1000 ) ) { break ; } select ( 1 , NULL , NULL , NULL , & tv3 ) ; } times [ i ] = ( ( tv2 . tv_sec * 1000000 - tv . tv_sec * 1000000 ) + ( tv2 . tv_usec - tv . tv_usec ) ) ; printf ( \"\\\\r%d/%d\\\\r\" , i , REQUESTS ) ; fflush ( stdout ) ; close ( sock ) ; } min = INT_MAX ; avg = 0 ; max = 0 ; for ( i = 0 ; i < REQUESTS ; i ++ ) { if ( times [ i ] < min ) min = times [ i ] ; if ( times [ i ] > max ) max = times [ i ] ; avg += times [ i ] ; } avg /= REQUESTS ; PCT ; printf ( \"ping<S2SV_blank>%s:%d<S2SV_blank>(min/avg/max):<S2SV_blank>%.3fms/%.3fms/%.3fms\\\\n\" , ip_str , port , min / 1000.0 , avg / 1000.0 , max / 1000.0 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( len > 1024 || len < 0 ) continue ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 <S2SV_StartBug> static void send ( node_t * node , node_t * child , byte * fout ) { <S2SV_EndBug> if ( node -> parent ) { <S2SV_StartBug> send ( node -> parent , node , fout ) ; <S2SV_EndBug> } <S2SV_StartBug> if ( child ) { <S2SV_EndBug> if ( node -> right == child ) { add_bit ( 1 , fout ) ; } else { add_bit ( 0 , fout ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> byte * fout , int maxoffset <S2SV_ModStart> node , fout , maxoffset <S2SV_ModStart> child ) { if ( bloc >= maxoffset ) { bloc = maxoffset + 1 ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6544\n\n```\nCWE-200 static int l2cap_sock_getname ( struct socket * sock , struct sockaddr * addr , int * len , int peer ) { struct sockaddr_l2 * la = ( struct sockaddr_l2 * ) addr ; struct sock * sk = sock -> sk ; struct l2cap_chan * chan = l2cap_pi ( sk ) -> chan ; <S2SV_StartBug> BT_DBG ( \"sock<S2SV_blank>%p,<S2SV_blank>sk<S2SV_blank>%p\" , sock , sk ) ; <S2SV_EndBug> addr -> sa_family = AF_BLUETOOTH ; * len = sizeof ( struct sockaddr_l2 ) ; if ( peer ) { la -> l2_psm = chan -> psm ; bacpy ( & la -> l2_bdaddr , & bt_sk ( sk ) -> dst ) ; la -> l2_cid = cpu_to_le16 ( chan -> dcid ) ; } else { la -> l2_psm = chan -> sport ; bacpy ( & la -> l2_bdaddr , & bt_sk ( sk ) -> src ) ; la -> l2_cid = cpu_to_le16 ( chan -> scid ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock , sk ) ; memset ( la , 0 , sizeof ( struct sockaddr_l2 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-674 static void Sp_split_regexp ( js_State * J ) { js_Regexp * re ; const char * text ; int limit , len , k ; const char * p , * a , * b , * c , * e ; Resub m ; text = checkstring ( J , 0 ) ; re = js_toregexp ( J , 1 ) ; limit = js_isdefined ( J , 2 ) ? js_tointeger ( J , 2 ) : 1 << 30 ; js_newarray ( J ) ; len = 0 ; e = text + strlen ( text ) ; if ( e == text ) { <S2SV_StartBug> if ( js_regexec ( re -> prog , text , & m , 0 ) ) { <S2SV_EndBug> if ( len == limit ) return ; js_pushliteral ( J , \"\" ) ; js_setindex ( J , - 2 , 0 ) ; } return ; } p = a = text ; while ( a < e ) { <S2SV_StartBug> if ( js_regexec ( re -> prog , a , & m , a > text ? REG_NOTBOL : 0 ) ) <S2SV_EndBug> break ; b = m . sub [ 0 ] . sp ; c = m . sub [ 0 ] . ep ; if ( b == p ) { ++ a ; continue ; } if ( len == limit ) return ; js_pushlstring ( J , p , b - p ) ; js_setindex ( J , - 2 , len ++ ) ; for ( k = 1 ; k < m . nsub ; ++ k ) { if ( len == limit ) return ; js_pushlstring ( J , m . sub [ k ] . sp , m . sub [ k ] . ep - m . sub [ k ] . sp ) ; js_setindex ( J , - 2 , len ++ ) ; } a = p = c ; } if ( len == limit ) return ; js_pushstring ( J , p ) ; js_setindex ( J , - 2 , len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( js_doregexec ( J , <S2SV_ModEnd> re -> prog <S2SV_ModStart> { if ( js_doregexec ( J , <S2SV_ModEnd> re -> prog\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _epoll_readv ( oe_fd_t * desc , const struct oe_iovec * iov , int iovcnt ) { ssize_t ret = - 1 ; epoll_t * file = _cast_epoll ( desc ) ; void * buf = NULL ; size_t buf_size = 0 ; <S2SV_StartBug> if ( ! file || ( iovcnt && ! iov ) || iovcnt < 0 || iovcnt > OE_IOV_MAX ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( oe_iov_pack ( iov , iovcnt , & buf , & buf_size ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> OE_RAISE_ERRNO ( OE_ENOMEM ) ; <S2SV_EndBug> if ( oe_syscall_readv_ocall ( & ret , file -> host_fd , buf , iovcnt , buf_size ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> if ( oe_iov_sync ( iov , iovcnt , buf , buf_size ) != 0 ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; done : if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; size_t data_size = 0 ; <S2SV_ModStart> , & buf_size , & data_size <S2SV_ModStart> OE_RAISE_ERRNO ( OE_ENOMEM ) ; if ( data_size > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL <S2SV_ModStart> } if ( ret > ( ssize_t ) data_size ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-0011\n\n```\nCWE-264 void eval_js ( WebKitWebView * web_view , gchar * script , GString * result ) { WebKitWebFrame * frame ; JSGlobalContextRef context ; <S2SV_StartBug> JSObjectRef globalobject ; <S2SV_EndBug> JSStringRef var_name ; JSStringRef js_script ; JSValueRef js_result ; JSStringRef js_result_string ; size_t js_result_size ; js_init ( ) ; frame = webkit_web_view_get_main_frame ( WEBKIT_WEB_VIEW ( web_view ) ) ; context = webkit_web_frame_get_global_context ( frame ) ; <S2SV_StartBug> globalobject = JSContextGetGlobalObject ( context ) ; <S2SV_EndBug> var_name = JSStringCreateWithUTF8CString ( \"Uzbl\" ) ; JSObjectSetProperty ( context , globalobject , var_name , JSObjectMake ( context , uzbl . js . classref , NULL ) , kJSClassAttributeNone , NULL ) ; js_script = JSStringCreateWithUTF8CString ( script ) ; js_result = JSEvaluateScript ( context , js_script , globalobject , NULL , 0 , NULL ) ; if ( js_result && ! JSValueIsUndefined ( context , js_result ) ) { js_result_string = JSValueToStringCopy ( context , js_result , NULL ) ; js_result_size = JSStringGetMaximumUTF8CStringSize ( js_result_string ) ; if ( js_result_size ) { char js_result_utf8 [ js_result_size ] ; JSStringGetUTF8CString ( js_result_string , js_result_utf8 , js_result_size ) ; g_string_assign ( result , js_result_utf8 ) ; } JSStringRelease ( js_result_string ) ; } <S2SV_StartBug> JSObjectDeleteProperty ( context , globalobject , var_name , NULL ) ; <S2SV_EndBug> JSStringRelease ( var_name ) ; JSStringRelease ( js_script ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; JSObjectRef globalobject <S2SV_ModEnd> ; JSStringRef js_script <S2SV_ModStart> JSContextGetGlobalObject ( context <S2SV_ModEnd> ) ; js_script <S2SV_ModStart> ) ; } <S2SV_ModEnd> JSStringRelease ( js_script\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14016\n\n```\nCWE-125 static bool r_bin_mdmp_init_directory ( struct r_bin_mdmp_obj * obj ) { int i ; <S2SV_StartBug> ut8 * directory_base ; <S2SV_EndBug> struct minidump_directory * entry ; directory_base = obj -> b -> buf + obj -> hdr -> stream_directory_rva ; sdb_num_set ( obj -> kv , \"mdmp_directory.offset\" , obj -> hdr -> stream_directory_rva , 0 ) ; sdb_set ( obj -> kv , \"mdmp_directory.format\" , \"[4]E?<S2SV_blank>\" \"(mdmp_stream_type)StreamType<S2SV_blank>\" \"(mdmp_location_descriptor)Location\" , 0 ) ; <S2SV_StartBug> for ( i = 0 ; i < ( int ) obj -> hdr -> number_of_streams ; i ++ ) { <S2SV_EndBug> <S2SV_StartBug> entry = ( struct minidump_directory * ) ( directory_base + ( i * sizeof ( struct minidump_directory ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> r_bin_mdmp_init_directory_entry ( obj , entry ) ; <S2SV_EndBug> } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; struct minidump_directory entry <S2SV_ModEnd> ; sdb_num_set ( <S2SV_ModStart> 0 ) ; ut64 rvadir = obj -> hdr -> stream_directory_rva ; <S2SV_ModStart> ++ ) { ut32 delta = <S2SV_ModEnd> i * sizeof <S2SV_ModStart> struct minidump_directory ) ; int r = r_buf_read_at ( obj -> b , rvadir + delta , ( ut8 * ) & entry , sizeof ( struct minidump_directory <S2SV_ModStart> ) ) ; if ( r ) { <S2SV_ModStart> ( obj , & <S2SV_ModStart> entry ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_encode_intra ( VP8_COMP * cpi , MACROBLOCK * x , int use_dc_pred ) { int i ; int intra_pred_var = 0 ; ( void ) cpi ; if ( use_dc_pred ) { x -> e_mbd . mode_info_context -> mbmi . mode = DC_PRED ; x -> e_mbd . mode_info_context -> mbmi . uv_mode = DC_PRED ; x -> e_mbd . mode_info_context -> mbmi . ref_frame = INTRA_FRAME ; vp8_encode_intra16x16mby ( x ) ; vp8_inverse_transform_mby ( & x -> e_mbd ) ; } else { for ( i = 0 ; i < 16 ; i ++ ) { x -> e_mbd . block [ i ] . bmi . as_mode = B_DC_PRED ; vp8_encode_intra4x4block ( x , i ) ; } } <S2SV_StartBug> intra_pred_var = vp8_get_mb_ss ( x -> src_diff ) ; <S2SV_EndBug> return intra_pred_var ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } intra_pred_var = vpx_get_mb_ss <S2SV_ModEnd> ( x ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3741\n\n```\nCWE-20 void ih264d_init_decoder ( void * ps_dec_params ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ps_dec_params ; dec_slice_params_t * ps_cur_slice ; pocstruct_t * ps_prev_poc , * ps_cur_poc ; WORD32 size ; size = sizeof ( pred_info_t ) * 2 * 32 ; memset ( ps_dec -> ps_pred , 0 , size ) ; size = sizeof ( disp_mgr_t ) ; memset ( ps_dec -> pv_disp_buf_mgr , 0 , size ) ; size = sizeof ( buf_mgr_t ) + ithread_get_mutex_lock_size ( ) ; memset ( ps_dec -> pv_pic_buf_mgr , 0 , size ) ; size = sizeof ( dec_err_status_t ) ; memset ( ps_dec -> ps_dec_err_status , 0 , size ) ; size = sizeof ( sei ) ; memset ( ps_dec -> ps_sei , 0 , size ) ; size = sizeof ( dpb_commands_t ) ; memset ( ps_dec -> ps_dpb_cmds , 0 , size ) ; size = sizeof ( dec_bit_stream_t ) ; memset ( ps_dec -> ps_bitstrm , 0 , size ) ; size = sizeof ( dec_slice_params_t ) ; memset ( ps_dec -> ps_cur_slice , 0 , size ) ; size = MAX ( sizeof ( dec_seq_params_t ) , sizeof ( dec_pic_params_t ) ) ; memset ( ps_dec -> pv_scratch_sps_pps , 0 , size ) ; size = sizeof ( ctxt_inc_mb_info_t ) ; memset ( ps_dec -> ps_left_mb_ctxt_info , 0 , size ) ; size = ( sizeof ( neighbouradd_t ) << 2 ) ; memset ( ps_dec -> ps_left_mvpred_addr , 0 , size ) ; size = sizeof ( buf_mgr_t ) + ithread_get_mutex_lock_size ( ) ; memset ( ps_dec -> pv_mv_buf_mgr , 0 , size ) ; ih264d_free_dynamic_bufs ( ps_dec ) ; ps_cur_slice = ps_dec -> ps_cur_slice ; ps_dec -> init_done = 0 ; ps_dec -> u4_num_cores = 1 ; ps_dec -> u2_pic_ht = ps_dec -> u2_pic_wd = 0 ; ps_dec -> u1_separate_parse = DEFAULT_SEPARATE_PARSE ; ps_dec -> u4_app_disable_deblk_frm = 0 ; ps_dec -> i4_degrade_type = 0 ; ps_dec -> i4_degrade_pics = 0 ; ps_dec -> i4_app_skip_mode = IVD_SKIP_NONE ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; memset ( ps_dec -> ps_pps , 0 , ( ( sizeof ( dec_pic_params_t ) ) * MAX_NUM_PIC_PARAMS ) ) ; memset ( ps_dec -> ps_sps , 0 , ( ( sizeof ( dec_seq_params_t ) ) * MAX_NUM_SEQ_PARAMS ) ) ; ps_dec -> p_DeblockPicture [ 0 ] = ih264d_deblock_picture_non_mbaff ; ps_dec -> p_DeblockPicture [ 1 ] = ih264d_deblock_picture_mbaff ; ps_dec -> s_cab_dec_env . pv_codec_handle = ps_dec ; ps_dec -> u4_num_fld_in_frm = 0 ; ps_dec -> ps_dpb_mgr -> pv_codec_handle = ps_dec ; ps_dec -> ps_sei -> u1_is_valid = 0 ; ps_dec -> ps_cur_pps = NULL ; ps_dec -> ps_cur_sps = NULL ; ps_dec -> u1_init_dec_flag = 0 ; ps_dec -> u1_first_slice_in_stream = 1 ; ps_dec -> u1_first_pb_nal_in_pic = 1 ; ps_dec -> u1_last_pic_not_decoded = 0 ; ps_dec -> u4_app_disp_width = 0 ; ps_dec -> i4_header_decoded = 0 ; ps_dec -> u4_total_frames_decoded = 0 ; ps_dec -> i4_error_code = 0 ; ps_dec -> i4_content_type = - 1 ; ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag = 0 ; ps_dec -> ps_dec_err_status -> u1_err_flag = ACCEPT_ALL_PICS ; ps_dec -> ps_dec_err_status -> u1_cur_pic_type = PIC_TYPE_UNKNOWN ; ps_dec -> ps_dec_err_status -> u4_frm_sei_sync = SYNC_FRM_DEFAULT ; ps_dec -> ps_dec_err_status -> u4_cur_frm = INIT_FRAME ; ps_dec -> ps_dec_err_status -> u1_pic_aud_i = PIC_TYPE_UNKNOWN ; ps_dec -> u1_pr_sl_type = 0xFF ; ps_dec -> u2_mbx = 0xffff ; ps_dec -> u2_mby = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_prev_poc = & ps_dec -> s_prev_pic_poc ; ps_cur_poc = & ps_dec -> s_cur_pic_poc ; ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb = 0 ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb = 0 ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom = 0 ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] = 0 ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] = 0 ; ps_prev_poc -> u1_mmco_equalto5 = ps_cur_poc -> u1_mmco_equalto5 = 0 ; ps_prev_poc -> i4_top_field_order_count = ps_cur_poc -> i4_top_field_order_count = 0 ; ps_prev_poc -> i4_bottom_field_order_count = ps_cur_poc -> i4_bottom_field_order_count = 0 ; ps_prev_poc -> u1_bot_field = ps_cur_poc -> u1_bot_field = 0 ; ps_prev_poc -> u1_mmco_equalto5 = ps_cur_poc -> u1_mmco_equalto5 = 0 ; ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst = 0 ; ps_cur_slice -> u1_mmco_equalto5 = 0 ; ps_cur_slice -> u2_frame_num = 0 ; ps_dec -> i4_max_poc = 0 ; ps_dec -> i4_prev_max_display_seq = 0 ; ps_dec -> u1_recon_mb_grp = 4 ; ps_dec -> u1_second_field = 0 ; ps_dec -> s_prev_seq_params . u1_eoseq_pending = 0 ; ps_dec -> u2_crop_offset_y = 0 ; ps_dec -> u2_crop_offset_uv = 0 ; ps_dec -> i4_vui_frame_rate = - 1 ; ps_dec -> i4_pic_type = - 1 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; ps_dec -> u1_res_changed = 0 ; ps_dec -> u1_frame_decoded_flag = 0 ; ps_dec -> u4_skip_frm_mask = SKIP_NONE ; ps_dec -> pf_cavlc_4x4res_block [ 0 ] = ih264d_cavlc_4x4res_block_totalcoeff_1 ; ps_dec -> pf_cavlc_4x4res_block [ 1 ] = ih264d_cavlc_4x4res_block_totalcoeff_2to10 ; ps_dec -> pf_cavlc_4x4res_block [ 2 ] = ih264d_cavlc_4x4res_block_totalcoeff_11to16 ; ps_dec -> pf_cavlc_parse4x4coeff [ 0 ] = ih264d_cavlc_parse4x4coeff_n0to7 ; ps_dec -> pf_cavlc_parse4x4coeff [ 1 ] = ih264d_cavlc_parse4x4coeff_n8 ; ps_dec -> pf_cavlc_parse_8x8block [ 0 ] = ih264d_cavlc_parse_8x8block_none_available ; ps_dec -> pf_cavlc_parse_8x8block [ 1 ] = ih264d_cavlc_parse_8x8block_left_available ; ps_dec -> pf_cavlc_parse_8x8block [ 2 ] = ih264d_cavlc_parse_8x8block_top_available ; ps_dec -> pf_cavlc_parse_8x8block [ 3 ] = ih264d_cavlc_parse_8x8block_both_available ; ps_dec -> pf_fill_bs1 [ 0 ] [ 0 ] = ih264d_fill_bs1_16x16mb_pslice ; ps_dec -> pf_fill_bs1 [ 0 ] [ 1 ] = ih264d_fill_bs1_non16x16mb_pslice ; ps_dec -> pf_fill_bs1 [ 1 ] [ 0 ] = ih264d_fill_bs1_16x16mb_bslice ; ps_dec -> pf_fill_bs1 [ 1 ] [ 1 ] = ih264d_fill_bs1_non16x16mb_bslice ; ps_dec -> pf_fill_bs_xtra_left_edge [ 0 ] = ih264d_fill_bs_xtra_left_edge_cur_frm ; ps_dec -> pf_fill_bs_xtra_left_edge [ 1 ] = ih264d_fill_bs_xtra_left_edge_cur_fld ; ih264d_init_ref_bufs ( ps_dec -> ps_dpb_mgr ) ; ps_dec -> u2_prv_frame_num = 0 ; ps_dec -> u1_top_bottom_decoded = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> s_cab_dec_env . cabac_table = gau4_ih264d_cabac_table ; ps_dec -> pu1_left_mv_ctxt_inc = ps_dec -> u1_left_mv_ctxt_inc_arr [ 0 ] ; ps_dec -> pi1_left_ref_idx_ctxt_inc = & ps_dec -> i1_left_ref_idx_ctx_inc_arr [ 0 ] [ 0 ] ; ps_dec -> pu1_left_yuv_dc_csbp = & ps_dec -> u1_yuv_dc_csbp_topmb ; ps_dec -> u1_flushfrm = 0 ; { ps_dec -> s_cab_dec_env . pv_codec_handle = ( void * ) ps_dec ; ps_dec -> ps_bitstrm -> pv_codec_handle = ( void * ) ps_dec ; ps_dec -> ps_cur_slice -> pv_codec_handle = ( void * ) ps_dec ; ps_dec -> ps_dpb_mgr -> pv_codec_handle = ( void * ) ps_dec ; } memset ( ps_dec -> disp_bufs , 0 , ( MAX_DISP_BUFS_NEW ) * sizeof ( disp_buf_t ) ) ; memset ( ps_dec -> u4_disp_buf_mapping , 0 , ( MAX_DISP_BUFS_NEW ) * sizeof ( UWORD32 ) ) ; memset ( ps_dec -> u4_disp_buf_to_be_freed , 0 , ( MAX_DISP_BUFS_NEW ) * sizeof ( UWORD32 ) ) ; <S2SV_StartBug> ih264d_init_arch ( ps_dec ) ; <S2SV_EndBug> ih264d_init_function_ptr ( ps_dec ) ; ps_dec -> e_frm_out_mode = IVD_DISPLAY_FRAME_OUT ; ps_dec -> init_done = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; memset ( ps_dec -> ps_cur_slice , 0 , sizeof ( dec_slice_params_t ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2439\n\n```\nCWE-119 bt_status_t btif_dm_pin_reply ( const bt_bdaddr_t * bd_addr , uint8_t accept , uint8_t pin_len , bt_pin_code_t * pin_code ) { BTIF_TRACE_EVENT ( \"%s:<S2SV_blank>accept=%d\" , __FUNCTION__ , accept ) ; <S2SV_StartBug> if ( pin_code == NULL ) <S2SV_EndBug> return BT_STATUS_FAIL ; # if ( defined ( BLE_INCLUDED ) && ( BLE_INCLUDED == TRUE ) ) if ( pairing_cb . is_le_only ) { int i ; UINT32 passkey = 0 ; int multi [ ] = { 100000 , 10000 , 1000 , 100 , 10 , 1 } ; BD_ADDR remote_bd_addr ; bdcpy ( remote_bd_addr , bd_addr -> address ) ; for ( i = 0 ; i < 6 ; i ++ ) { passkey += ( multi [ i ] * ( pin_code -> pin [ i ] - '0' ) ) ; } BTIF_TRACE_DEBUG ( \"btif_dm_pin_reply:<S2SV_blank>passkey:<S2SV_blank>%d\" , passkey ) ; BTA_DmBlePasskeyReply ( remote_bd_addr , accept , passkey ) ; } else { BTA_DmPinReply ( ( UINT8 * ) bd_addr -> address , accept , pin_len , pin_code -> pin ) ; if ( accept ) pairing_cb . pin_code_len = pin_len ; } # else BTA_DmPinReply ( ( UINT8 * ) bd_addr -> address , accept , pin_len , pin_code -> pin ) ; if ( accept ) pairing_cb . pin_code_len = pin_len ; # endif return BT_STATUS_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pin_code == NULL || pin_len > PIN_CODE_LEN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2494\n\n```\nCWE-264 static ssize_t get_node_path_locked ( struct node * node , char * buf , size_t bufsize ) { const char * name ; size_t namelen ; if ( node -> graft_path ) { name = node -> graft_path ; namelen = node -> graft_pathlen ; } else if ( node -> actual_name ) { name = node -> actual_name ; namelen = node -> namelen ; } else { name = node -> name ; namelen = node -> namelen ; } if ( bufsize < namelen + 1 ) { return - 1 ; } ssize_t pathlen = 0 ; if ( node -> parent && node -> graft_path == NULL ) { <S2SV_StartBug> pathlen = get_node_path_locked ( node -> parent , buf , bufsize - namelen - 2 ) ; <S2SV_EndBug> if ( pathlen < 0 ) { return - 1 ; } buf [ pathlen ++ ] = '/' ; } memcpy ( buf + pathlen , name , namelen + 1 ) ; return pathlen + namelen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - namelen - 1 <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6767\n\n```\nCWE-125 int ParseRiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int is_rf64 = ! strncmp ( fourcc , \"RF64\" , 4 ) , got_ds64 = 0 ; int64_t total_samples = 0 , infilesize ; RiffChunkHeader riff_chunk_header ; ChunkHeader chunk_header ; WaveHeader WaveHeader ; DS64Chunk ds64_chunk ; uint32_t bcount ; CLEAR ( WaveHeader ) ; CLEAR ( ds64_chunk ) ; infilesize = DoGetFileSize ( infile ) ; if ( ! is_rf64 && infilesize >= 4294967296LL && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) ) { error_line ( \"can\\'t<S2SV_blank>handle<S2SV_blank>.WAV<S2SV_blank>files<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>4<S2SV_blank>GB<S2SV_blank>(non-standard)!\" ) ; return WAVPACK_SOFT_ERROR ; } memcpy ( & riff_chunk_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & riff_chunk_header ) + 4 , sizeof ( RiffChunkHeader ) - 4 , & bcount ) || bcount != sizeof ( RiffChunkHeader ) - 4 || strncmp ( riff_chunk_header . formType , \"WAVE\" , 4 ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & riff_chunk_header , sizeof ( RiffChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( ChunkHeader ) , & bcount ) || bcount != sizeof ( ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , ChunkHeaderFormat ) ; if ( ! strncmp ( chunk_header . ckID , \"ds64\" , 4 ) ) { if ( chunk_header . ckSize < sizeof ( DS64Chunk ) || <S2SV_StartBug> ! DoReadFile ( infile , & ds64_chunk , chunk_header . ckSize , & bcount ) || <S2SV_EndBug> <S2SV_StartBug> bcount != chunk_header . ckSize ) { <S2SV_EndBug> error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && <S2SV_StartBug> ! WavpackAddWrapper ( wpc , & ds64_chunk , chunk_header . ckSize ) ) { <S2SV_EndBug> error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } got_ds64 = 1 ; WavpackLittleEndianToNative ( & ds64_chunk , DS64ChunkFormat ) ; if ( debug_logging_mode ) error_line ( \"DS64:<S2SV_blank>riffSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>dataSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>sampleCount<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>table_length<S2SV_blank>=<S2SV_blank>%d\" , ( long long ) ds64_chunk . riffSize64 , ( long long ) ds64_chunk . dataSize64 , ( long long ) ds64_chunk . sampleCount64 , ds64_chunk . tableLength ) ; if ( ds64_chunk . tableLength * sizeof ( CS64Chunk ) != chunk_header . ckSize - sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } while ( ds64_chunk . tableLength -- ) { CS64Chunk cs64_chunk ; if ( ! DoReadFile ( infile , & cs64_chunk , sizeof ( CS64Chunk ) , & bcount ) || bcount != sizeof ( CS64Chunk ) || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & cs64_chunk , sizeof ( CS64Chunk ) ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } } } else if ( ! strncmp ( chunk_header . ckID , \"fmt<S2SV_blank>\" , 4 ) ) { int supported = TRUE , format ; if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.WAV<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>WAV<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else if ( config -> float_norm_exp ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point<S2SV_blank>(Audition<S2SV_blank>%d:%d<S2SV_blank>float<S2SV_blank>type<S2SV_blank>1)\" , config -> float_norm_exp - 126 , 150 - config -> float_norm_exp ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! strncmp ( chunk_header . ckID , \"data\" , 4 ) ) { int64_t data_chunk_size = ( got_ds64 && chunk_header . ckSize == ( uint32_t ) - 1 ) ? ds64_chunk . dataSize64 : chunk_header . ckSize ; if ( ! WaveHeader . NumChannels || ( is_rf64 && ! got_ds64 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && infilesize - data_chunk_size > 16777216 ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( config -> qmode & QMODE_IGNORE_LENGTH ) { if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { total_samples = data_chunk_size / WaveHeader . BlockAlign ; if ( got_ds64 && total_samples != ds64_chunk . sampleCount64 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 1 ) & ~ 1L ; char * buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & ds64_chunk , sizeof ( DS64Chunk ) <S2SV_ModEnd> , & bcount <S2SV_ModStart> || bcount != sizeof ( DS64Chunk ) <S2SV_ModEnd> ) { error_line <S2SV_ModStart> & ds64_chunk , sizeof ( DS64Chunk ) <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010297\n\n```\nCWE-119 TEE_Result syscall_obj_generate_key ( unsigned long obj , unsigned long key_size , const struct utee_attribute * usr_params , unsigned long param_count ) { TEE_Result res ; struct tee_ta_session * sess ; const struct tee_cryp_obj_type_props * type_props ; struct tee_obj * o ; struct tee_cryp_obj_secret * key ; size_t byte_size ; TEE_Attribute * params = NULL ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_obj_get ( to_user_ta_ctx ( sess -> ctx ) , tee_svc_uref_to_vaddr ( obj ) , & o ) ; if ( res != TEE_SUCCESS ) return res ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_PERSISTENT ) != 0 ) return TEE_ERROR_BAD_STATE ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_INITIALIZED ) != 0 ) return TEE_ERROR_BAD_STATE ; type_props = tee_svc_find_type_props ( o -> info . objectType ) ; if ( ! type_props ) return TEE_ERROR_NOT_SUPPORTED ; if ( key_size % type_props -> quanta != 0 ) return TEE_ERROR_NOT_SUPPORTED ; if ( key_size < type_props -> min_size ) return TEE_ERROR_NOT_SUPPORTED ; if ( key_size > type_props -> max_size ) return TEE_ERROR_NOT_SUPPORTED ; <S2SV_StartBug> params = malloc ( sizeof ( TEE_Attribute ) * param_count ) ; <S2SV_EndBug> if ( ! params ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( to_user_ta_ctx ( sess -> ctx ) , usr_params , param_count , params ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_svc_cryp_check_attr ( ATTR_USAGE_GENERATE_KEY , type_props , params , param_count ) ; if ( res != TEE_SUCCESS ) goto out ; switch ( o -> info . objectType ) { case TEE_TYPE_AES : case TEE_TYPE_DES : case TEE_TYPE_DES3 : case TEE_TYPE_HMAC_MD5 : case TEE_TYPE_HMAC_SHA1 : case TEE_TYPE_HMAC_SHA224 : case TEE_TYPE_HMAC_SHA256 : case TEE_TYPE_HMAC_SHA384 : case TEE_TYPE_HMAC_SHA512 : case TEE_TYPE_GENERIC_SECRET : byte_size = key_size / 8 ; if ( o -> info . objectType == TEE_TYPE_DES || o -> info . objectType == TEE_TYPE_DES3 ) { byte_size = ( key_size + key_size / 7 ) / 8 ; } key = ( struct tee_cryp_obj_secret * ) o -> attr ; if ( byte_size > key -> alloc_size ) { res = TEE_ERROR_EXCESS_DATA ; goto out ; } res = crypto_rng_read ( ( void * ) ( key + 1 ) , byte_size ) ; if ( res != TEE_SUCCESS ) goto out ; key -> key_size = byte_size ; o -> have_attrs = ( 1 << type_props -> num_type_attrs ) - 1 ; break ; case TEE_TYPE_RSA_KEYPAIR : res = tee_svc_obj_generate_key_rsa ( o , type_props , key_size , params , param_count ) ; if ( res != TEE_SUCCESS ) goto out ; break ; case TEE_TYPE_DSA_KEYPAIR : res = tee_svc_obj_generate_key_dsa ( o , type_props , key_size ) ; if ( res != TEE_SUCCESS ) goto out ; break ; case TEE_TYPE_DH_KEYPAIR : res = tee_svc_obj_generate_key_dh ( o , type_props , key_size , params , param_count ) ; if ( res != TEE_SUCCESS ) goto out ; break ; case TEE_TYPE_ECDSA_KEYPAIR : case TEE_TYPE_ECDH_KEYPAIR : res = tee_svc_obj_generate_key_ecc ( o , type_props , key_size , params , param_count ) ; if ( res != TEE_SUCCESS ) goto out ; break ; default : res = TEE_ERROR_BAD_FORMAT ; } out : free ( params ) ; if ( res == TEE_SUCCESS ) { o -> info . keySize = key_size ; o -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return TEE_ERROR_NOT_SUPPORTED ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , param_count , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t vp8e_mr_alloc_mem ( const vpx_codec_enc_cfg_t * cfg , void * * mem_loc ) { vpx_codec_err_t res = 0 ; # if CONFIG_MULTI_RES_ENCODING LOWER_RES_FRAME_INFO * shared_mem_loc ; int mb_rows = ( ( cfg -> g_w + 15 ) >> 4 ) ; int mb_cols = ( ( cfg -> g_h + 15 ) >> 4 ) ; shared_mem_loc = calloc ( 1 , sizeof ( LOWER_RES_FRAME_INFO ) ) ; if ( ! shared_mem_loc ) { res = VPX_CODEC_MEM_ERROR ; } shared_mem_loc -> mb_info = calloc ( mb_rows * mb_cols , sizeof ( LOWER_RES_MB_INFO ) ) ; if ( ! ( shared_mem_loc -> mb_info ) ) { res = VPX_CODEC_MEM_ERROR ; } else { * mem_loc = ( void * ) shared_mem_loc ; res = VPX_CODEC_OK ; } <S2SV_StartBug> # endif <S2SV_EndBug> return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } # else ( void ) cfg ; ( void ) mem_loc ; #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-120 void test_base64_lengths ( void ) { const char * in = \"FuseMuse\" ; char out1 [ 32 ] ; char out2 [ 32 ] ; size_t enclen ; int declen ; enclen = mutt_b64_encode ( out1 , in , 0 , 32 ) ; if ( ! TEST_CHECK ( enclen == 0 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , 0 ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , enclen ) ; } out1 [ 0 ] = '\\\\0' ; <S2SV_StartBug> declen = mutt_b64_decode ( out2 , out1 ) ; <S2SV_EndBug> if ( ! TEST_CHECK ( declen == - 1 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , - 1 ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , declen ) ; } for ( size_t i = 1 ; i <= 8 ; ++ i ) { enclen = mutt_b64_encode ( out1 , in , i , 32 ) ; size_t exp = ( ( i + 2 ) / 3 ) << 2 ; if ( ! TEST_CHECK ( enclen == exp ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , exp ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , enclen ) ; } <S2SV_StartBug> declen = mutt_b64_decode ( out2 , out1 ) ; <S2SV_EndBug> if ( ! TEST_CHECK ( declen == i ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , i ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , declen ) ; } out2 [ declen ] = '\\\\0' ; if ( ! TEST_CHECK ( strncmp ( out2 , in , i ) == 0 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%s\" , in ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%s\" , out2 ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out2 , out1 , sizeof ( out2 ) <S2SV_ModStart> out2 , out1 , sizeof ( out2 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static int keyring_search_iterator ( const void * object , void * iterator_data ) { struct keyring_search_context * ctx = iterator_data ; const struct key * key = keyring_ptr_to_key ( object ) ; <S2SV_StartBug> unsigned long kflags = key -> flags ; <S2SV_EndBug> kenter ( \"{%d}\" , key -> serial ) ; if ( key -> type != ctx -> index_key . type ) { kleave ( \"<S2SV_blank>=<S2SV_blank>0<S2SV_blank>[!type]\" ) ; return 0 ; } if ( ctx -> flags & KEYRING_SEARCH_DO_STATE_CHECK ) { if ( kflags & ( ( 1 << KEY_FLAG_INVALIDATED ) | ( 1 << KEY_FLAG_REVOKED ) ) ) { ctx -> result = ERR_PTR ( - EKEYREVOKED ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[invrev]\" , ctx -> skipped_ret ) ; goto skipped ; } if ( key -> expiry && ctx -> now . tv_sec >= key -> expiry ) { if ( ! ( ctx -> flags & KEYRING_SEARCH_SKIP_EXPIRED ) ) ctx -> result = ERR_PTR ( - EKEYEXPIRED ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[expire]\" , ctx -> skipped_ret ) ; goto skipped ; } } if ( ! ctx -> match_data . cmp ( key , & ctx -> match_data ) ) { kleave ( \"<S2SV_blank>=<S2SV_blank>0<S2SV_blank>[!match]\" ) ; return 0 ; } if ( ! ( ctx -> flags & KEYRING_SEARCH_NO_CHECK_PERM ) && key_task_permission ( make_key_ref ( key , ctx -> possessed ) , ctx -> cred , KEY_NEED_SEARCH ) < 0 ) { ctx -> result = ERR_PTR ( - EACCES ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[!perm]\" , ctx -> skipped_ret ) ; goto skipped ; } if ( ctx -> flags & KEYRING_SEARCH_DO_STATE_CHECK ) { <S2SV_StartBug> if ( kflags & ( 1 << KEY_FLAG_NEGATIVE ) ) { <S2SV_EndBug> smp_rmb ( ) ; <S2SV_StartBug> ctx -> result = ERR_PTR ( key -> reject_error ) ; <S2SV_EndBug> kleave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[neg]\" , ctx -> skipped_ret ) ; goto skipped ; } } ctx -> result = make_key_ref ( key , ctx -> possessed ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>1<S2SV_blank>[found]\" ) ; return 1 ; skipped : return ctx -> skipped_ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long kflags = READ_ONCE ( key -> flags ) ; short state = READ_ONCE ( key -> state ) <S2SV_ModEnd> ; kenter ( <S2SV_ModStart> { if ( state < 0 ) { <S2SV_ModEnd> ctx -> result <S2SV_ModStart> = ERR_PTR ( state <S2SV_ModEnd> ) ; kleave\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t validate_config ( vpx_codec_alg_priv_t * ctx , const vpx_codec_enc_cfg_t * cfg , const struct vp8_extracfg * vp8_cfg , int finalize ) { RANGE_CHECK ( cfg , g_w , 1 , 16383 ) ; RANGE_CHECK ( cfg , g_h , 1 , 16383 ) ; RANGE_CHECK ( cfg , g_timebase . den , 1 , 1000000000 ) ; <S2SV_StartBug> RANGE_CHECK ( cfg , g_timebase . num , 1 , cfg -> g_timebase . den ) ; <S2SV_EndBug> RANGE_CHECK_HI ( cfg , g_profile , 3 ) ; RANGE_CHECK_HI ( cfg , rc_max_quantizer , 63 ) ; RANGE_CHECK_HI ( cfg , rc_min_quantizer , cfg -> rc_max_quantizer ) ; RANGE_CHECK_HI ( cfg , g_threads , 64 ) ; # if CONFIG_REALTIME_ONLY RANGE_CHECK_HI ( cfg , g_lag_in_frames , 0 ) ; # elif CONFIG_MULTI_RES_ENCODING if ( ctx -> base . enc . total_encoders > 1 ) RANGE_CHECK_HI ( cfg , g_lag_in_frames , 0 ) ; # else RANGE_CHECK_HI ( cfg , g_lag_in_frames , 25 ) ; # endif RANGE_CHECK ( cfg , rc_end_usage , VPX_VBR , VPX_Q ) ; RANGE_CHECK_HI ( cfg , rc_undershoot_pct , 1000 ) ; RANGE_CHECK_HI ( cfg , rc_overshoot_pct , 1000 ) ; RANGE_CHECK_HI ( cfg , rc_2pass_vbr_bias_pct , 100 ) ; RANGE_CHECK ( cfg , kf_mode , VPX_KF_DISABLED , VPX_KF_AUTO ) ; # if CONFIG_MULTI_RES_ENCODING if ( ctx -> base . enc . total_encoders > 1 ) RANGE_CHECK_HI ( cfg , rc_resize_allowed , 0 ) ; # else RANGE_CHECK_BOOL ( cfg , rc_resize_allowed ) ; # endif RANGE_CHECK_HI ( cfg , rc_dropframe_thresh , 100 ) ; RANGE_CHECK_HI ( cfg , rc_resize_up_thresh , 100 ) ; RANGE_CHECK_HI ( cfg , rc_resize_down_thresh , 100 ) ; # if CONFIG_REALTIME_ONLY RANGE_CHECK ( cfg , g_pass , VPX_RC_ONE_PASS , VPX_RC_ONE_PASS ) ; # elif CONFIG_MULTI_RES_ENCODING if ( ctx -> base . enc . total_encoders > 1 ) RANGE_CHECK ( cfg , g_pass , VPX_RC_ONE_PASS , VPX_RC_ONE_PASS ) ; # else RANGE_CHECK ( cfg , g_pass , VPX_RC_ONE_PASS , VPX_RC_LAST_PASS ) ; # endif if ( cfg -> kf_mode != VPX_KF_DISABLED && cfg -> kf_min_dist != cfg -> kf_max_dist && cfg -> kf_min_dist > 0 ) ERROR ( \"kf_min_dist<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>auto<S2SV_blank>mode,<S2SV_blank>use<S2SV_blank>0<S2SV_blank>\" \"or<S2SV_blank>kf_max_dist<S2SV_blank>instead.\" ) ; RANGE_CHECK_BOOL ( vp8_cfg , enable_auto_alt_ref ) ; RANGE_CHECK ( vp8_cfg , cpu_used , - 16 , 16 ) ; # if CONFIG_REALTIME_ONLY && ! CONFIG_TEMPORAL_DENOISING RANGE_CHECK ( vp8_cfg , noise_sensitivity , 0 , 0 ) ; # else RANGE_CHECK_HI ( vp8_cfg , noise_sensitivity , 6 ) ; # endif RANGE_CHECK ( vp8_cfg , token_partitions , VP8_ONE_TOKENPARTITION , VP8_EIGHT_TOKENPARTITION ) ; RANGE_CHECK_HI ( vp8_cfg , Sharpness , 7 ) ; RANGE_CHECK ( vp8_cfg , arnr_max_frames , 0 , 15 ) ; RANGE_CHECK_HI ( vp8_cfg , arnr_strength , 6 ) ; RANGE_CHECK ( vp8_cfg , arnr_type , 1 , 3 ) ; <S2SV_StartBug> RANGE_CHECK ( vp8_cfg , cq_level , 0 , 63 ) ; <S2SV_EndBug> if ( finalize && ( cfg -> rc_end_usage == VPX_CQ || cfg -> rc_end_usage == VPX_Q ) ) RANGE_CHECK ( vp8_cfg , cq_level , cfg -> rc_min_quantizer , cfg -> rc_max_quantizer ) ; # if ! ( CONFIG_REALTIME_ONLY ) if ( cfg -> g_pass == VPX_RC_LAST_PASS ) { size_t packet_sz = sizeof ( FIRSTPASS_STATS ) ; int n_packets = ( int ) ( cfg -> rc_twopass_stats_in . sz / packet_sz ) ; FIRSTPASS_STATS * stats ; if ( ! cfg -> rc_twopass_stats_in . buf ) ERROR ( \"rc_twopass_stats_in.buf<S2SV_blank>not<S2SV_blank>set.\" ) ; if ( cfg -> rc_twopass_stats_in . sz % packet_sz ) ERROR ( \"rc_twopass_stats_in.sz<S2SV_blank>indicates<S2SV_blank>truncated<S2SV_blank>packet.\" ) ; if ( cfg -> rc_twopass_stats_in . sz < 2 * packet_sz ) ERROR ( \"rc_twopass_stats_in<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>two<S2SV_blank>packets.\" ) ; stats = ( void * ) ( ( char * ) cfg -> rc_twopass_stats_in . buf + ( n_packets - 1 ) * packet_sz ) ; if ( ( int ) ( stats -> count + 0.5 ) != n_packets - 1 ) ERROR ( \"rc_twopass_stats_in<S2SV_blank>missing<S2SV_blank>EOS<S2SV_blank>stats<S2SV_blank>packet\" ) ; } # endif RANGE_CHECK ( cfg , ts_number_layers , 1 , 5 ) ; if ( cfg -> ts_number_layers > 1 ) { unsigned int i ; RANGE_CHECK_HI ( cfg , ts_periodicity , 16 ) ; for ( i = 1 ; i < cfg -> ts_number_layers ; i ++ ) <S2SV_StartBug> if ( cfg -> ts_target_bitrate [ i ] <= cfg -> ts_target_bitrate [ i - 1 ] ) <S2SV_EndBug> ERROR ( \"ts_target_bitrate<S2SV_blank>entries<S2SV_blank>are<S2SV_blank>not<S2SV_blank>strictly<S2SV_blank>increasing\" ) ; RANGE_CHECK ( cfg , ts_rate_decimator [ cfg -> ts_number_layers - 1 ] , 1 , 1 ) ; for ( i = cfg -> ts_number_layers - 2 ; i > 0 ; i -- ) if ( cfg -> ts_rate_decimator [ i - 1 ] != 2 * cfg -> ts_rate_decimator [ i ] ) ERROR ( \"ts_rate_decimator<S2SV_blank>factors<S2SV_blank>are<S2SV_blank>not<S2SV_blank>powers<S2SV_blank>of<S2SV_blank>2\" ) ; RANGE_CHECK_HI ( cfg , ts_layer_id [ i ] , cfg -> ts_number_layers - 1 ) ; } # if ( CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING ) if ( cfg -> g_threads > ( 1 << vp8_cfg -> token_partitions ) ) ERROR ( \"g_threads<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>number<S2SV_blank>of<S2SV_blank>token<S2SV_blank>partitions\" ) ; # endif return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , 1000000000 <S2SV_ModEnd> ) ; RANGE_CHECK_HI <S2SV_ModStart> 0 , 63 ) ; RANGE_CHECK_HI ( vp8_cfg , screen_content_mode , 2 <S2SV_ModStart> - 1 ] && cfg -> rc_target_bitrate > 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9630\n\n```\nCWE-119 int rtp_packetize_xiph_config ( sout_stream_id_sys_t * id , const char * fmtp , int64_t i_pts ) { if ( fmtp == NULL ) return VLC_EGENERIC ; char * start = strstr ( fmtp , \"configuration=\" ) ; assert ( start != NULL ) ; start += sizeof ( \"configuration=\" ) - 1 ; char * end = strchr ( start , ';' ) ; assert ( end != NULL ) ; size_t len = end - start ; <S2SV_StartBug> char b64 [ len + 1 ] ; <S2SV_EndBug> memcpy ( b64 , start , len ) ; b64 [ len ] = '\\\\0' ; int i_max = rtp_mtu ( id ) - 6 ; uint8_t * p_orig , * p_data ; int i_data ; <S2SV_StartBug> i_data = vlc_b64_decode_binary ( & p_orig , b64 ) ; <S2SV_EndBug> if ( i_data <= 9 ) { free ( p_orig ) ; return VLC_EGENERIC ; } p_data = p_orig + 9 ; i_data -= 9 ; int i_count = ( i_data + i_max - 1 ) / i_max ; for ( int i = 0 ; i < i_count ; i ++ ) { int i_payload = __MIN ( i_max , i_data ) ; block_t * out = block_Alloc ( 18 + i_payload ) ; unsigned fragtype , numpkts ; if ( i_count == 1 ) { fragtype = 0 ; numpkts = 1 ; } else { numpkts = 0 ; if ( i == 0 ) fragtype = 1 ; else if ( i == i_count - 1 ) fragtype = 3 ; else fragtype = 2 ; } uint32_t header = ( ( XIPH_IDENT & 0xffffff ) << 8 ) | ( fragtype << 6 ) | ( 1 << 4 ) | numpkts ; rtp_packetize_common ( id , out , 0 , i_pts ) ; SetDWBE ( out -> p_buffer + 12 , header ) ; SetWBE ( out -> p_buffer + 16 , i_payload ) ; memcpy ( & out -> p_buffer [ 18 ] , p_data , i_payload ) ; out -> i_dts = i_pts ; rtp_packetize_send ( id , out ) ; p_data += i_payload ; i_data -= i_payload ; } free ( p_orig ) ; return VLC_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> start ; char * b64 = malloc ( <S2SV_ModEnd> len + 1 <S2SV_ModStart> len + 1 ) ; if ( ! b64 ) return VLC_EGENERIC <S2SV_ModEnd> ; memcpy ( <S2SV_ModStart> & p_orig , b64 ) ; free (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 u_int fr_print ( netdissect_options * ndo , register const u_char * p , u_int length ) { int ret ; uint16_t extracted_ethertype ; u_int dlci ; u_int addr_len ; uint16_t nlpid ; u_int hdr_len ; uint8_t flags [ 4 ] ; ret = parse_q922_addr ( ndo , p , & dlci , & addr_len , flags , length ) ; if ( ret == - 1 ) goto trunc ; if ( ret == 0 ) { ND_PRINT ( ( ndo , \"Q.922,<S2SV_blank>invalid<S2SV_blank>address\" ) ) ; return 0 ; } ND_TCHECK ( p [ addr_len ] ) ; if ( length < addr_len + 1 ) goto trunc ; if ( p [ addr_len ] != LLC_UI && dlci != 0 ) { if ( ! ND_TTEST2 ( p [ addr_len ] , 2 ) || length < addr_len + 2 ) { ND_PRINT ( ( ndo , \"UI<S2SV_blank>%02x!<S2SV_blank>\" , p [ addr_len ] ) ) ; } else { extracted_ethertype = EXTRACT_16BITS ( p + addr_len ) ; if ( ndo -> ndo_eflag ) fr_hdr_print ( ndo , length , addr_len , dlci , flags , extracted_ethertype ) ; if ( ethertype_print ( ndo , extracted_ethertype , p + addr_len + ETHERTYPE_LEN , length - addr_len - ETHERTYPE_LEN , ndo -> ndo_snapend - p - addr_len - ETHERTYPE_LEN , NULL , NULL ) == 0 ) ND_PRINT ( ( ndo , \"UI<S2SV_blank>%02x!<S2SV_blank>\" , p [ addr_len ] ) ) ; else return addr_len + 2 ; } } ND_TCHECK ( p [ addr_len + 1 ] ) ; if ( length < addr_len + 2 ) goto trunc ; if ( p [ addr_len + 1 ] == 0 ) { if ( addr_len != 3 ) ND_PRINT ( ( ndo , \"Pad!<S2SV_blank>\" ) ) ; hdr_len = addr_len + 1 + 1 + 1 ; } else { if ( addr_len == 3 ) ND_PRINT ( ( ndo , \"No<S2SV_blank>pad!<S2SV_blank>\" ) ) ; hdr_len = addr_len + 1 + 1 ; } ND_TCHECK ( p [ hdr_len - 1 ] ) ; if ( length < hdr_len ) goto trunc ; nlpid = p [ hdr_len - 1 ] ; if ( ndo -> ndo_eflag ) fr_hdr_print ( ndo , length , addr_len , dlci , flags , nlpid ) ; p += hdr_len ; length -= hdr_len ; switch ( nlpid ) { case NLPID_IP : ip_print ( ndo , p , length ) ; break ; case NLPID_IP6 : ip6_print ( ndo , p , length ) ; break ; case NLPID_CLNP : case NLPID_ESIS : case NLPID_ISIS : <S2SV_StartBug> isoclns_print ( ndo , p - 1 , length + 1 , ndo -> ndo_snapend - p + 1 ) ; <S2SV_EndBug> break ; case NLPID_SNAP : if ( snap_print ( ndo , p , length , ndo -> ndo_snapend - p , NULL , NULL , 0 ) == 0 ) { if ( ! ndo -> ndo_eflag ) fr_hdr_print ( ndo , length + hdr_len , hdr_len , dlci , flags , nlpid ) ; if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p - hdr_len , length + hdr_len ) ; } break ; case NLPID_Q933 : q933_print ( ndo , p , length ) ; break ; case NLPID_MFR : frf15_print ( ndo , p , length ) ; break ; case NLPID_PPP : ppp_print ( ndo , p , length ) ; break ; default : if ( ! ndo -> ndo_eflag ) fr_hdr_print ( ndo , length + hdr_len , addr_len , dlci , flags , nlpid ) ; if ( ! ndo -> ndo_xflag ) ND_DEFAULTPRINT ( p , length ) ; } return hdr_len ; trunc : ND_PRINT ( ( ndo , \"[|fr]\" ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length + 1 ) ; break ; case NLPID_SNAP : if ( snap_print ( ndo , p , length <S2SV_ModStart> ndo_snapend - p <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 long keyctl_chown_key ( key_serial_t id , uid_t user , gid_t group ) { struct key_user * newowner , * zapowner = NULL ; struct key * key ; key_ref_t key_ref ; long ret ; kuid_t uid ; kgid_t gid ; uid = make_kuid ( current_user_ns ( ) , user ) ; gid = make_kgid ( current_user_ns ( ) , group ) ; ret = - EINVAL ; if ( ( user != ( uid_t ) - 1 ) && ! uid_valid ( uid ) ) goto error ; if ( ( group != ( gid_t ) - 1 ) && ! gid_valid ( gid ) ) goto error ; ret = 0 ; if ( user == ( uid_t ) - 1 && group == ( gid_t ) - 1 ) goto error ; key_ref = lookup_user_key ( id , KEY_LOOKUP_CREATE | KEY_LOOKUP_PARTIAL , KEY_NEED_SETATTR ) ; if ( IS_ERR ( key_ref ) ) { ret = PTR_ERR ( key_ref ) ; goto error ; } key = key_ref_to_ptr ( key_ref ) ; ret = - EACCES ; down_write ( & key -> sem ) ; if ( ! capable ( CAP_SYS_ADMIN ) ) { if ( user != ( uid_t ) - 1 && ! uid_eq ( key -> uid , uid ) ) goto error_put ; if ( group != ( gid_t ) - 1 && ! gid_eq ( gid , key -> gid ) && ! in_group_p ( gid ) ) goto error_put ; } if ( user != ( uid_t ) - 1 && ! uid_eq ( uid , key -> uid ) ) { ret = - ENOMEM ; newowner = key_user_lookup ( uid ) ; if ( ! newowner ) goto error_put ; if ( test_bit ( KEY_FLAG_IN_QUOTA , & key -> flags ) ) { unsigned maxkeys = uid_eq ( uid , GLOBAL_ROOT_UID ) ? key_quota_root_maxkeys : key_quota_maxkeys ; unsigned maxbytes = uid_eq ( uid , GLOBAL_ROOT_UID ) ? key_quota_root_maxbytes : key_quota_maxbytes ; spin_lock ( & newowner -> lock ) ; if ( newowner -> qnkeys + 1 >= maxkeys || newowner -> qnbytes + key -> quotalen >= maxbytes || newowner -> qnbytes + key -> quotalen < newowner -> qnbytes ) goto quota_overrun ; newowner -> qnkeys ++ ; newowner -> qnbytes += key -> quotalen ; spin_unlock ( & newowner -> lock ) ; spin_lock ( & key -> user -> lock ) ; key -> user -> qnkeys -- ; key -> user -> qnbytes -= key -> quotalen ; spin_unlock ( & key -> user -> lock ) ; } atomic_dec ( & key -> user -> nkeys ) ; atomic_inc ( & newowner -> nkeys ) ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) { <S2SV_EndBug> atomic_dec ( & key -> user -> nikeys ) ; atomic_inc ( & newowner -> nikeys ) ; } zapowner = key -> user ; key -> user = newowner ; key -> uid = uid ; } if ( group != ( gid_t ) - 1 ) key -> gid = gid ; ret = 0 ; error_put : up_write ( & key -> sem ) ; key_put ( key ) ; if ( zapowner ) key_user_put ( zapowner ) ; error : return ret ; quota_overrun : spin_unlock ( & newowner -> lock ) ; zapowner = newowner ; ret = - EDQUOT ; goto error_put ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key -> state != KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) { atomic_dec\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 int do_adjtimex ( struct timex * txc ) { <S2SV_StartBug> long mtemp , save_adjust , rem ; <S2SV_EndBug> s64 freq_adj ; int result ; if ( txc -> modes && ! capable ( CAP_SYS_TIME ) ) return - EPERM ; if ( ( txc -> modes & ADJ_OFFSET_SINGLESHOT ) == ADJ_OFFSET_SINGLESHOT ) { if ( txc -> modes != ADJ_OFFSET_SINGLESHOT && txc -> modes != ADJ_OFFSET_SS_READ ) return - EINVAL ; } if ( txc -> modes != ADJ_OFFSET_SINGLESHOT && ( txc -> modes & ADJ_OFFSET ) ) if ( txc -> offset <= - MAXPHASE || txc -> offset >= MAXPHASE ) return - EINVAL ; if ( txc -> modes & ADJ_TICK ) if ( txc -> tick < 900000 / USER_HZ || txc -> tick > 1100000 / USER_HZ ) return - EINVAL ; write_seqlock_irq ( & xtime_lock ) ; result = time_state ; save_adjust = time_adjust ; # if 0 time_status &= ~ STA_CLOCKERR ; # endif if ( txc -> modes ) { if ( txc -> modes & ADJ_STATUS ) time_status = ( txc -> status & ~ STA_RONLY ) | ( time_status & STA_RONLY ) ; if ( txc -> modes & ADJ_FREQUENCY ) { if ( txc -> freq > MAXFREQ || txc -> freq < - MAXFREQ ) { result = - EINVAL ; goto leave ; } time_freq = ( ( s64 ) txc -> freq * NSEC_PER_USEC ) >> ( SHIFT_USEC - SHIFT_NSEC ) ; } if ( txc -> modes & ADJ_MAXERROR ) { if ( txc -> maxerror < 0 || txc -> maxerror >= NTP_PHASE_LIMIT ) { result = - EINVAL ; goto leave ; } time_maxerror = txc -> maxerror ; } if ( txc -> modes & ADJ_ESTERROR ) { if ( txc -> esterror < 0 || txc -> esterror >= NTP_PHASE_LIMIT ) { result = - EINVAL ; goto leave ; } time_esterror = txc -> esterror ; } if ( txc -> modes & ADJ_TIMECONST ) { if ( txc -> constant < 0 ) { result = - EINVAL ; goto leave ; } time_constant = min ( txc -> constant + 4 , ( long ) MAXTC ) ; } if ( txc -> modes & ADJ_OFFSET ) { if ( txc -> modes == ADJ_OFFSET_SINGLESHOT ) { time_adjust = txc -> offset ; } else if ( time_status & STA_PLL ) { time_offset = txc -> offset * NSEC_PER_USEC ; time_offset = min ( time_offset , ( s64 ) MAXPHASE * NSEC_PER_USEC ) ; time_offset = max ( time_offset , ( s64 ) - MAXPHASE * NSEC_PER_USEC ) ; if ( time_status & STA_FREQHOLD || time_reftime == 0 ) time_reftime = xtime . tv_sec ; mtemp = xtime . tv_sec - time_reftime ; time_reftime = xtime . tv_sec ; freq_adj = time_offset * mtemp ; freq_adj = shift_right ( freq_adj , time_constant * 2 + ( SHIFT_PLL + 2 ) * 2 - SHIFT_NSEC ) ; if ( mtemp >= MINSEC && ( time_status & STA_FLL || mtemp > MAXSEC ) ) freq_adj += div_s64 ( time_offset << ( SHIFT_NSEC - SHIFT_FLL ) , mtemp ) ; freq_adj += time_freq ; freq_adj = min ( freq_adj , ( s64 ) MAXFREQ_NSEC ) ; time_freq = max ( freq_adj , ( s64 ) - MAXFREQ_NSEC ) ; <S2SV_StartBug> time_offset = div_long_long_rem_signed ( time_offset , <S2SV_EndBug> <S2SV_StartBug> NTP_INTERVAL_FREQ , <S2SV_EndBug> & rem ) ; time_offset <<= SHIFT_UPDATE ; } } if ( txc -> modes & ADJ_TICK ) tick_usec = txc -> tick ; if ( txc -> modes & ( ADJ_TICK | ADJ_FREQUENCY | ADJ_OFFSET ) ) ntp_update_frequency ( ) ; } leave : if ( ( time_status & ( STA_UNSYNC | STA_CLOCKERR ) ) != 0 ) result = TIME_ERROR ; if ( ( txc -> modes == ADJ_OFFSET_SINGLESHOT ) || ( txc -> modes == ADJ_OFFSET_SS_READ ) ) txc -> offset = save_adjust ; else txc -> offset = ( ( long ) shift_right ( time_offset , SHIFT_UPDATE ) ) * NTP_INTERVAL_FREQ / 1000 ; txc -> freq = ( time_freq / NSEC_PER_USEC ) << ( SHIFT_USEC - SHIFT_NSEC ) ; txc -> maxerror = time_maxerror ; txc -> esterror = time_esterror ; txc -> status = time_status ; txc -> constant = time_constant ; txc -> precision = 1 ; txc -> tolerance = MAXFREQ ; txc -> tick = tick_usec ; txc -> ppsfreq = 0 ; txc -> jitter = 0 ; txc -> shift = 0 ; txc -> stabil = 0 ; txc -> jitcnt = 0 ; txc -> calcnt = 0 ; txc -> errcnt = 0 ; txc -> stbcnt = 0 ; write_sequnlock_irq ( & xtime_lock ) ; do_gettimeofday ( & txc -> time ) ; notify_cmos_timer ( ) ; return ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mtemp , save_adjust <S2SV_ModEnd> ; s64 freq_adj <S2SV_ModStart> ; time_offset = div_s64 <S2SV_ModEnd> ( time_offset , <S2SV_ModStart> time_offset , NTP_INTERVAL_FREQ <S2SV_ModEnd> ) ; time_offset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12981\n\n```\nCWE-119 void SWFShape_setLeftFillStyle ( SWFShape shape , SWFFillStyle fill ) { ShapeRecord record ; int idx ; if ( shape -> isEnded || shape -> isMorph ) return ; if ( fill == NOFILL ) { record = addStyleRecord ( shape ) ; record . record . stateChange -> leftFill = 0 ; record . record . stateChange -> flags |= SWF_SHAPE_FILLSTYLE0FLAG ; return ; } idx = getFillIdx ( shape , fill ) ; if ( idx == 0 ) { SWFFillStyle_addDependency ( fill , ( SWFCharacter ) shape ) ; if ( addFillStyle ( shape , fill ) < 0 ) return ; idx = getFillIdx ( shape , fill ) ; } <S2SV_StartBug> record = addStyleRecord ( shape ) ; <S2SV_EndBug> record . record . stateChange -> leftFill = idx ; record . record . stateChange -> flags |= SWF_SHAPE_FILLSTYLE0FLAG ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } else if ( idx >= 255 && shape -> useVersion == SWF_SHAPE1 ) { SWF_error ( \"Too<S2SV_blank>many<S2SV_blank>fills<S2SV_blank>for<S2SV_blank>SWFShape<S2SV_blank>V1.\\\\n\" \"Use<S2SV_blank>a<S2SV_blank>higher<S2SV_blank>SWFShape<S2SV_blank>version\\\\n\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int atalk_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { <S2SV_StartBug> struct sock * sk = sock -> sk ; <S2SV_EndBug> struct sockaddr_at * sat = ( struct sockaddr_at * ) msg -> msg_name ; struct ddpehdr * ddp ; int copied = 0 ; int offset = 0 ; int err = 0 ; struct sk_buff * skb ; skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & err ) ; lock_sock ( sk ) ; if ( ! skb ) goto out ; ddp = ddp_hdr ( skb ) ; copied = ntohs ( ddp -> deh_len_hops ) & 1023 ; if ( sk -> sk_type != SOCK_RAW ) { offset = sizeof ( * ddp ) ; copied -= offset ; } if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } err = skb_copy_datagram_iovec ( skb , offset , msg -> msg_iov , copied ) ; <S2SV_StartBug> if ( ! err ) { <S2SV_EndBug> if ( sat ) { sat -> sat_family = AF_APPLETALK ; sat -> sat_port = ddp -> deh_sport ; sat -> sat_addr . s_node = ddp -> deh_snode ; sat -> sat_addr . s_net = ddp -> deh_snet ; <S2SV_StartBug> } <S2SV_EndBug> msg -> msg_namelen = sizeof ( * sat ) ; } skb_free_datagram ( sk , skb ) ; out : release_sock ( sk ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock -> sk <S2SV_ModEnd> ; struct ddpehdr <S2SV_ModStart> ( ! err && msg -> msg_name ) { struct sockaddr_at * sat = msg -> msg_name ; <S2SV_ModEnd> sat -> sat_family <S2SV_ModStart> -> deh_snet ; <S2SV_ModEnd> msg -> msg_namelen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9717\n\n```\nCWE-284 void __detach_mounts ( struct dentry * dentry ) { struct mountpoint * mp ; struct mount * mnt ; namespace_lock ( ) ; mp = lookup_mountpoint ( dentry ) ; if ( ! mp ) goto out_unlock ; lock_mount_hash ( ) ; while ( ! hlist_empty ( & mp -> m_list ) ) { mnt = hlist_entry ( mp -> m_list . first , struct mount , mnt_mp_list ) ; <S2SV_StartBug> umount_tree ( mnt , 0 ) ; <S2SV_EndBug> } unlock_mount_hash ( ) ; put_mountpoint ( mp ) ; out_unlock : namespace_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mnt_mp_list ) ; if ( mnt -> mnt . mnt_flags & MNT_UMOUNT ) { struct mount * p , * tmp ; list_for_each_entry_safe ( p , tmp , & mnt -> mnt_mounts , mnt_child ) { hlist_add_head ( & p -> mnt_umount . s_list , & unmounted ) ; umount_mnt ( p ) ; } } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_get_preview_raw_frame ( VP8_COMP * cpi , YV12_BUFFER_CONFIG * dest , vp8_ppflags_t * flags ) { if ( cpi -> common . refresh_alt_ref_frame ) return - 1 ; else { int ret ; # if CONFIG_MULTITHREAD if ( cpi -> b_lpf_running ) { sem_wait ( & cpi -> h_event_end_lpf ) ; cpi -> b_lpf_running = 0 ; } # endif # if CONFIG_POSTPROC cpi -> common . show_frame_mi = cpi -> common . mi ; ret = vp8_post_proc_frame ( & cpi -> common , dest , flags ) ; # else <S2SV_StartBug> if ( cpi -> common . frame_to_show ) <S2SV_EndBug> { * dest = * cpi -> common . frame_to_show ; dest -> y_width = cpi -> common . Width ; dest -> y_height = cpi -> common . Height ; dest -> uv_height = cpi -> common . Height / 2 ; ret = 0 ; } else { ret = - 1 ; } # endif vp8_clear_system_state ( ) ; return ret ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # else ( void ) flags ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9016\n\n```\nCWE-264 static void bt_for_each ( struct blk_mq_hw_ctx * hctx , struct blk_mq_bitmap_tags * bt , unsigned int off , busy_iter_fn * fn , void * data , bool reserved ) { struct request * rq ; int bit , i ; for ( i = 0 ; i < bt -> map_nr ; i ++ ) { struct blk_align_bitmap * bm = & bt -> map [ i ] ; for ( bit = find_first_bit ( & bm -> word , bm -> depth ) ; bit < bm -> depth ; bit = find_next_bit ( & bm -> word , bm -> depth , bit + 1 ) ) { <S2SV_StartBug> rq = blk_mq_tag_to_rq ( hctx -> tags , off + bit ) ; <S2SV_EndBug> if ( rq -> q == hctx -> queue ) fn ( hctx , rq , data , reserved ) ; } off += ( 1 << bt -> bits_per_word ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { rq = <S2SV_ModEnd> hctx -> tags <S2SV_ModStart> hctx -> tags -> rqs [ <S2SV_ModEnd> off + bit <S2SV_ModStart> off + bit ] <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void pick_quickcompress_mode ( vpx_codec_alg_priv_t * ctx , unsigned long duration , unsigned long deadline ) { <S2SV_StartBug> MODE new_qc = MODE_BESTQUALITY ; <S2SV_EndBug> <S2SV_StartBug> if ( deadline ) { <S2SV_EndBug> const uint64_t duration_us = ( uint64_t ) duration * 1000000 * <S2SV_StartBug> ( uint64_t ) ctx -> cfg . g_timebase . num / <S2SV_EndBug> <S2SV_StartBug> ( uint64_t ) ctx -> cfg . g_timebase . den ; <S2SV_EndBug> <S2SV_StartBug> new_qc = ( deadline > duration_us ) ? MODE_GOODQUALITY : MODE_REALTIME ; <S2SV_EndBug> } if ( ctx -> cfg . g_pass == VPX_RC_FIRST_PASS ) new_qc = MODE_FIRSTPASS ; else if ( ctx -> cfg . g_pass == VPX_RC_LAST_PASS ) new_qc = ( new_qc == MODE_BESTQUALITY ) ? MODE_SECONDPASS_BEST : MODE_SECONDPASS ; <S2SV_StartBug> if ( ctx -> oxcf . mode != new_qc ) { <S2SV_EndBug> <S2SV_StartBug> ctx -> oxcf . mode = new_qc ; <S2SV_EndBug> vp9_change_config ( ctx -> cpi , & ctx -> oxcf ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { MODE new_mode = BEST ; switch ( ctx -> cfg . g_pass ) { case VPX_RC_ONE_PASS : <S2SV_ModEnd> if ( deadline <S2SV_ModStart> if ( deadline > 0 ) { const vpx_codec_enc_cfg_t * const cfg = & ctx -> cfg ; <S2SV_ModEnd> const uint64_t duration_us <S2SV_ModStart> ( uint64_t ) cfg -> <S2SV_ModEnd> g_timebase . num <S2SV_ModStart> ( uint64_t ) cfg -> <S2SV_ModEnd> g_timebase . den <S2SV_ModStart> . den ; new_mode <S2SV_ModEnd> = ( deadline <S2SV_ModStart> duration_us ) ? GOOD : REALTIME ; } else { new_mode = BEST ; } break ; case VPX_RC_FIRST_PASS : break ; case VPX_RC_LAST_PASS : new_mode = deadline > 0 ? GOOD : BEST ; break ; } <S2SV_ModEnd> if ( ctx <S2SV_ModStart> . mode != new_mode <S2SV_ModEnd> ) { ctx <S2SV_ModStart> . mode = new_mode <S2SV_ModEnd> ; vp9_change_config (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int get_minq_index ( double maxq , double x3 , double x2 , double x1 ) { <S2SV_EndBug> int i ; const double minqtarget = MIN ( ( ( x3 * maxq + x2 ) * maxq + x1 ) * maxq , maxq ) ; if ( minqtarget <= 2.0 ) return 0 ; <S2SV_StartBug> for ( i = 0 ; i < QINDEX_RANGE ; i ++ ) <S2SV_EndBug> <S2SV_StartBug> if ( minqtarget <= vp9_convert_qindex_to_q ( i ) ) <S2SV_EndBug> <S2SV_StartBug> return i ; <S2SV_EndBug> return QINDEX_RANGE - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , double x1 , vpx_bit_depth_t bit_depth <S2SV_ModStart> i ++ ) { <S2SV_ModStart> vp9_convert_qindex_to_q ( i , bit_depth <S2SV_ModStart> return i ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-770(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16645\n\n```\nCWE-770 static Image * ReadBMPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { BMPInfo bmp_info ; Image * image ; MagickBooleanType status ; MagickOffsetType offset , start_position ; MemoryInfo * pixel_info ; Quantum index ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bit , bytes_per_line , length ; ssize_t count , y ; unsigned char magick [ 12 ] , * pixels ; unsigned int blue , green , offset_bits , red ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( & bmp_info , 0 , sizeof ( bmp_info ) ) ; bmp_info . ba_offset = 0 ; start_position = 0 ; offset_bits = 0 ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { PixelInfo quantum_bits ; PixelPacket shift ; if ( bmp_info . ba_offset == 0 ) start_position = TellBlob ( image ) - 2 ; bmp_info . ba_offset = 0 ; while ( LocaleNCompare ( ( char * ) magick , \"BA\" , 2 ) == 0 ) { bmp_info . file_size = ReadBlobLSBLong ( image ) ; bmp_info . ba_offset = ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) break ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Magick:<S2SV_blank>%c%c\" , magick [ 0 ] , magick [ 1 ] ) ; if ( ( count != 2 ) || ( ( LocaleNCompare ( ( char * ) magick , \"BM\" , 2 ) != 0 ) && ( LocaleNCompare ( ( char * ) magick , \"CI\" , 2 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bmp_info . file_size = ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; bmp_info . size = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>BMP<S2SV_blank>size:<S2SV_blank>%u\" , bmp_info . size ) ; if ( bmp_info . size == 12 ) { ( void ) CopyMagickString ( image -> magick , \"BMP2\" , MagickPathExtent ) ; bmp_info . width = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . height = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . x_pixels = 0 ; bmp_info . y_pixels = 0 ; bmp_info . number_colors = 0 ; bmp_info . compression = BI_RGB ; bmp_info . image_size = 0 ; bmp_info . alpha_mask = 0 ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>OS/2<S2SV_blank>Bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; } } else { if ( bmp_info . size < 40 ) ThrowReaderException ( CorruptImageError , \"NonOS2HeaderSizeError\" ) ; bmp_info . width = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . height = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . compression = ReadBlobLSBLong ( image ) ; bmp_info . image_size = ReadBlobLSBLong ( image ) ; bmp_info . x_pixels = ReadBlobLSBLong ( image ) ; bmp_info . y_pixels = ReadBlobLSBLong ( image ) ; <S2SV_StartBug> bmp_info . number_colors = ReadBlobLSBLong ( image ) ; <S2SV_EndBug> bmp_info . colors_important = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>MS<S2SV_blank>Windows<S2SV_blank>bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Bits<S2SV_blank>per<S2SV_blank>pixel:<S2SV_blank>%.20g\" , ( double ) bmp_info . bits_per_pixel ) ; switch ( bmp_info . compression ) { case BI_RGB : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RGB\" ) ; break ; } case BI_RLE4 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE4\" ) ; break ; } case BI_RLE8 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE8\" ) ; break ; } case BI_BITFIELDS : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_BITFIELDS\" ) ; break ; } case BI_PNG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_PNG\" ) ; break ; } case BI_JPEG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_JPEG\" ) ; break ; } default : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>UNKNOWN<S2SV_blank>(%u)\" , bmp_info . compression ) ; } } ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>colors:<S2SV_blank>%u\" , bmp_info . number_colors ) ; } bmp_info . red_mask = ReadBlobLSBLong ( image ) ; bmp_info . green_mask = ReadBlobLSBLong ( image ) ; bmp_info . blue_mask = ReadBlobLSBLong ( image ) ; if ( bmp_info . size > 40 ) { double gamma ; bmp_info . alpha_mask = ReadBlobLSBLong ( image ) ; bmp_info . colorspace = ReadBlobLSBSignedLong ( image ) ; # define BMP_DENOM ( ( double ) 0x40000000 ) bmp_info . red_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; gamma = bmp_info . red_primary . x + bmp_info . red_primary . y + bmp_info . red_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . red_primary . x *= gamma ; bmp_info . red_primary . y *= gamma ; image -> chromaticity . red_primary . x = bmp_info . red_primary . x ; image -> chromaticity . red_primary . y = bmp_info . red_primary . y ; gamma = bmp_info . green_primary . x + bmp_info . green_primary . y + bmp_info . green_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . green_primary . x *= gamma ; bmp_info . green_primary . y *= gamma ; image -> chromaticity . green_primary . x = bmp_info . green_primary . x ; image -> chromaticity . green_primary . y = bmp_info . green_primary . y ; gamma = bmp_info . blue_primary . x + bmp_info . blue_primary . y + bmp_info . blue_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . blue_primary . x *= gamma ; bmp_info . blue_primary . y *= gamma ; image -> chromaticity . blue_primary . x = bmp_info . blue_primary . x ; image -> chromaticity . blue_primary . y = bmp_info . blue_primary . y ; bmp_info . gamma_scale . x = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . y = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . z = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; image -> gamma = ( bmp_info . gamma_scale . x + bmp_info . gamma_scale . y + bmp_info . gamma_scale . z ) / 3.0 ; } else ( void ) CopyMagickString ( image -> magick , \"BMP3\" , MagickPathExtent ) ; if ( bmp_info . size > 108 ) { size_t intent ; intent = ReadBlobLSBLong ( image ) ; switch ( ( int ) intent ) { case LCS_GM_BUSINESS : { image -> rendering_intent = SaturationIntent ; break ; } case LCS_GM_GRAPHICS : { image -> rendering_intent = RelativeIntent ; break ; } case LCS_GM_IMAGES : { image -> rendering_intent = PerceptualIntent ; break ; } case LCS_GM_ABS_COLORIMETRIC : { image -> rendering_intent = AbsoluteIntent ; break ; } } ( void ) ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; } } if ( ( MagickSizeType ) bmp_info . file_size > GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; else if ( ( MagickSizeType ) bmp_info . file_size < GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageWarning , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; if ( bmp_info . width <= 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . height == 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . planes != 1 ) ThrowReaderException ( CorruptImageError , \"StaticPlanesValueNotEqualToOne\" ) ; if ( ( bmp_info . bits_per_pixel != 1 ) && ( bmp_info . bits_per_pixel != 4 ) && ( bmp_info . bits_per_pixel != 8 ) && ( bmp_info . bits_per_pixel != 16 ) && ( bmp_info . bits_per_pixel != 24 ) && ( bmp_info . bits_per_pixel != 32 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( bmp_info . bits_per_pixel < 16 && bmp_info . number_colors > ( 1U << bmp_info . bits_per_pixel ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedNumberOfColors\" ) ; if ( ( bmp_info . compression == 1 ) && ( bmp_info . bits_per_pixel != 8 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 2 ) && ( bmp_info . bits_per_pixel != 4 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 3 ) && ( bmp_info . bits_per_pixel < 16 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; switch ( bmp_info . compression ) { case BI_RGB : image -> compression = NoCompression ; break ; case BI_RLE8 : case BI_RLE4 : image -> compression = RLECompression ; break ; case BI_BITFIELDS : break ; case BI_JPEG : ThrowReaderException ( CoderError , \"JPEGCompressNotSupported\" ) ; case BI_PNG : ThrowReaderException ( CoderError , \"PNGCompressNotSupported\" ) ; default : ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } image -> columns = ( size_t ) MagickAbsoluteValue ( bmp_info . width ) ; image -> rows = ( size_t ) MagickAbsoluteValue ( bmp_info . height ) ; image -> depth = bmp_info . bits_per_pixel <= 8 ? bmp_info . bits_per_pixel : 8 ; image -> alpha_trait = ( ( bmp_info . alpha_mask != 0 ) && ( bmp_info . compression == BI_BITFIELDS ) ) ? BlendPixelTrait : UndefinedPixelTrait ; if ( bmp_info . bits_per_pixel < 16 ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = bmp_info . number_colors ; one = 1 ; if ( image -> colors == 0 ) image -> colors = one << bmp_info . bits_per_pixel ; } image -> resolution . x = ( double ) bmp_info . x_pixels / 100.0 ; image -> resolution . y = ( double ) bmp_info . y_pixels / 100.0 ; image -> units = PixelsPerCentimeterResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> storage_class == PseudoClass ) { unsigned char * bmp_colormap ; size_t packet_size ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>colormap<S2SV_blank>of<S2SV_blank>%.20g<S2SV_blank>colors\" , ( double ) image -> colors ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bmp_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) image -> colors , 4 * sizeof ( * bmp_colormap ) ) ; if ( bmp_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bmp_info . size == 12 ) || ( bmp_info . size == 64 ) ) packet_size = 3 ; else packet_size = 4 ; offset = SeekBlob ( image , start_position + 14 + bmp_info . size , SEEK_SET ) ; if ( offset < 0 ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } count = ReadBlob ( image , packet_size * image -> colors , bmp_colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = bmp_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; if ( packet_size == 4 ) p ++ ; } bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; } if ( bmp_info . offset_bits == offset_bits ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; offset_bits = bmp_info . offset_bits ; offset = SeekBlob ( image , start_position + bmp_info . offset_bits , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( bmp_info . compression == BI_RLE4 ) bmp_info . bits_per_pixel <<= 1 ; bytes_per_line = 4 * ( ( image -> columns * bmp_info . bits_per_pixel + 31 ) / 32 ) ; length = ( size_t ) bytes_per_line * image -> rows ; if ( ( ( MagickSizeType ) length / 8 ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ( bmp_info . compression == BI_RGB ) || ( bmp_info . compression == BI_BITFIELDS ) ) { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>pixels<S2SV_blank>(%.20g<S2SV_blank>bytes)\" , ( double ) length ) ; count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } } else { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; status = DecodeImage ( image , bmp_info . compression , pixels , image -> columns * image -> rows ) ; if ( status == MagickFalse ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToRunlengthDecodeImage\" ) ; } } if ( bmp_info . compression == BI_RGB ) { if ( ( image -> alpha_trait == UndefinedPixelTrait ) && ( bmp_info . size == 40 ) && ( bmp_info . bits_per_pixel == 32 ) ) { bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( * ( p + 3 ) != 0 ) { image -> alpha_trait = BlendPixelTrait ; y = - 1 ; break ; } p += 4 ; } } } bmp_info . alpha_mask = image -> alpha_trait != UndefinedPixelTrait ? 0xff000000U : 0U ; bmp_info . red_mask = 0x00ff0000U ; bmp_info . green_mask = 0x0000ff00U ; bmp_info . blue_mask = 0x000000ffU ; if ( bmp_info . bits_per_pixel == 16 ) { bmp_info . red_mask = 0x00007c00U ; bmp_info . green_mask = 0x000003e0U ; bmp_info . blue_mask = 0x0000001fU ; } } ( void ) memset ( & shift , 0 , sizeof ( shift ) ) ; ( void ) memset ( & quantum_bits , 0 , sizeof ( quantum_bits ) ) ; if ( ( bmp_info . bits_per_pixel == 16 ) || ( bmp_info . bits_per_pixel == 32 ) ) { register unsigned int sample ; if ( bmp_info . red_mask != 0 ) while ( ( ( bmp_info . red_mask << shift . red ) & 0x80000000UL ) == 0 ) { shift . red ++ ; if ( shift . red >= 32U ) break ; } if ( bmp_info . green_mask != 0 ) while ( ( ( bmp_info . green_mask << shift . green ) & 0x80000000UL ) == 0 ) { shift . green ++ ; if ( shift . green >= 32U ) break ; } if ( bmp_info . blue_mask != 0 ) while ( ( ( bmp_info . blue_mask << shift . blue ) & 0x80000000UL ) == 0 ) { shift . blue ++ ; if ( shift . blue >= 32U ) break ; } if ( bmp_info . alpha_mask != 0 ) while ( ( ( bmp_info . alpha_mask << shift . alpha ) & 0x80000000UL ) == 0 ) { shift . alpha ++ ; if ( shift . alpha >= 32U ) break ; } sample = shift . red ; while ( ( ( bmp_info . red_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . red = ( MagickRealType ) ( sample - shift . red ) ; sample = shift . green ; while ( ( ( bmp_info . green_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . green = ( MagickRealType ) ( sample - shift . green ) ; sample = shift . blue ; while ( ( ( bmp_info . blue_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . blue = ( MagickRealType ) ( sample - shift . blue ) ; sample = shift . alpha ; while ( ( ( bmp_info . alpha_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . alpha = ( MagickRealType ) ( sample - shift . alpha ) ; } switch ( bmp_info . bits_per_pixel ) { case 1 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 4 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; ValidateColormapValue ( image , ( ssize_t ) ( * p & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0xf ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; x ++ ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 8 : { if ( ( bmp_info . compression == BI_RLE8 ) || ( bmp_info . compression == BI_RLE4 ) ) bytes_per_line = image -> columns ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = ( ssize_t ) image -> columns ; x != 0 ; -- x ) { ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 16 : { unsigned int alpha , pixel ; if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 2 * ( image -> columns + image -> columns % 2 ) ; image -> storage_class = DirectClass ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( * p ++ ) << 8 ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 5 ) red |= ( ( red & 0xe000 ) >> 5 ) ; if ( quantum_bits . red <= 8 ) red |= ( ( red & 0xff00 ) >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 5 ) green |= ( ( green & 0xe000 ) >> 5 ) ; if ( quantum_bits . green == 6 ) green |= ( ( green & 0xc000 ) >> 6 ) ; if ( quantum_bits . green <= 8 ) green |= ( ( green & 0xff00 ) >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 5 ) blue |= ( ( blue & 0xe000 ) >> 5 ) ; if ( quantum_bits . blue <= 8 ) blue |= ( ( blue & 0xff00 ) >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha <= 8 ) alpha |= ( ( alpha & 0xff00 ) >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 24 : { bytes_per_line = 4 * ( ( image -> columns * 24 + 31 ) / 32 ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 32 : { if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { unsigned int alpha , pixel ; p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( ( unsigned int ) * p ++ << 8 ) ; pixel |= ( ( unsigned int ) * p ++ << 16 ) ; pixel |= ( ( unsigned int ) * p ++ << 24 ) ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 8 ) red |= ( red >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 8 ) green |= ( green >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 8 ) blue |= ( blue >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha == 8 ) alpha |= ( alpha >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } default : { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( y > 0 ) break ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( bmp_info . height < 0 ) { Image * flipped_image ; flipped_image = FlipImage ( image , exception ) ; if ( flipped_image != ( Image * ) NULL ) { DuplicateBlob ( flipped_image , image ) ; ReplaceImageInList ( & image , flipped_image ) ; image = flipped_image ; } } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; * magick = '\\\\0' ; if ( bmp_info . ba_offset != 0 ) { offset = SeekBlob ( image , ( MagickOffsetType ) bmp_info . ba_offset , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } count = ReadBlob ( image , 2 , magick ) ; if ( ( count == 2 ) && ( IsBMP ( magick , 2 ) != MagickFalse ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( IsBMP ( magick , 2 ) != MagickFalse ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ReadBlobLSBLong ( image ) ; if ( bmp_info . number_colors > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 static void show_object ( struct object * obj , <S2SV_StartBug> struct strbuf * path , const char * component , <S2SV_EndBug> void * cb_data ) { struct rev_list_info * info = cb_data ; <S2SV_StartBug> finish_object ( obj , path , component , cb_data ) ; <S2SV_EndBug> if ( info -> flags & REV_LIST_QUIET ) return ; <S2SV_StartBug> show_object_with_name ( stdout , obj , path , component ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void * <S2SV_ModStart> ( obj , name <S2SV_ModEnd> , cb_data ) <S2SV_ModStart> , obj , name <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 static struct sock * dccp_v6_request_recv_sock ( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req ) { struct inet_request_sock * ireq = inet_rsk ( req ) ; struct ipv6_pinfo * newnp ; <S2SV_StartBug> const struct ipv6_pinfo * np = inet6_sk ( sk ) ; <S2SV_EndBug> struct inet_sock * newinet ; struct dccp6_sock * newdp6 ; struct sock * newsk ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = dccp_v4_request_recv_sock ( sk , skb , req , dst , req_unhash , own_req ) ; if ( newsk == NULL ) return NULL ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newnp -> saddr = newsk -> sk_v6_rcv_saddr ; inet_csk ( newsk ) -> icsk_af_ops = & dccp_ipv6_mapped ; newsk -> sk_backlog_rcv = dccp_v4_do_rcv ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; dccp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( ! dst ) { struct flowi6 fl6 ; dst = inet6_csk_route_req ( sk , & fl6 , req , IPPROTO_DCCP ) ; if ( ! dst ) goto out ; } newsk = dccp_create_openreq_child ( sk , req , skb ) ; if ( newsk == NULL ) goto out_nonewsk ; __ip6_dst_store ( newsk , dst , NULL , NULL ) ; newsk -> sk_route_caps = dst -> dev -> features & ~ ( NETIF_F_IP_CSUM | NETIF_F_TSO ) ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newsk -> sk_v6_daddr = ireq -> ir_v6_rmt_addr ; newnp -> saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_v6_rcv_saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_bound_dev_if = ireq -> ir_iif ; newinet -> inet_opt = NULL ; newnp -> rxopt . all = np -> rxopt . all ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; <S2SV_StartBug> if ( np -> opt != NULL ) <S2SV_EndBug> <S2SV_StartBug> newnp -> opt = ipv6_dup_options ( newsk , np -> opt ) ; <S2SV_EndBug> inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( newnp -> opt != NULL ) <S2SV_EndBug> <S2SV_StartBug> inet_csk ( newsk ) -> icsk_ext_hdr_len = ( newnp -> opt -> opt_nflen + <S2SV_EndBug> <S2SV_StartBug> newnp -> opt -> opt_flen ) ; <S2SV_EndBug> dccp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; if ( __inet_inherit_port ( sk , newsk ) < 0 ) { inet_csk_prepare_forced_close ( newsk ) ; dccp_done ( newsk ) ; goto out ; } * own_req = inet_ehash_nolisten ( newsk , req_to_sk ( req_unhash ) ) ; if ( * own_req && ireq -> pktopts ) { newnp -> pktoptions = skb_clone ( ireq -> pktopts , GFP_ATOMIC ) ; consume_skb ( ireq -> pktopts ) ; ireq -> pktopts = NULL ; if ( newnp -> pktoptions ) skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } return newsk ; out_overflow : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; struct ipv6_txoptions * opt <S2SV_ModStart> -> hop_limit ; opt = rcu_dereference <S2SV_ModEnd> ( np -> <S2SV_ModStart> np -> opt ) ; if ( opt ) { <S2SV_ModEnd> opt = ipv6_dup_options <S2SV_ModStart> ( newsk , opt ) ; RCU_INIT_POINTER ( newnp -> opt , opt ) ; } <S2SV_ModEnd> inet_csk ( newsk <S2SV_ModStart> ; if ( opt <S2SV_ModEnd> ) inet_csk ( <S2SV_ModStart> -> icsk_ext_hdr_len = <S2SV_ModEnd> opt -> opt_nflen <S2SV_ModStart> -> opt_nflen + <S2SV_ModEnd> opt -> opt_flen <S2SV_ModStart> opt -> opt_flen <S2SV_ModEnd> ; dccp_sync_mss (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9555\n\n```\nCWE-125 sctp_disposition_t sctp_sf_ootb ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { struct sctp_chunk * chunk = arg ; struct sk_buff * skb = chunk -> skb ; sctp_chunkhdr_t * ch ; sctp_errhdr_t * err ; __u8 * ch_end ; int ootb_shut_ack = 0 ; int ootb_cookie_ack = 0 ; SCTP_INC_STATS ( net , SCTP_MIB_OUTOFBLUES ) ; ch = ( sctp_chunkhdr_t * ) chunk -> chunk_hdr ; do { if ( ntohs ( ch -> length ) < sizeof ( sctp_chunkhdr_t ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; <S2SV_StartBug> if ( SCTP_CID_SHUTDOWN_ACK == ch -> type ) <S2SV_EndBug> ootb_shut_ack = 1 ; if ( SCTP_CID_ABORT == ch -> type ) return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; if ( SCTP_CID_COOKIE_ACK == ch -> type ) ootb_cookie_ack = 1 ; if ( SCTP_CID_ERROR == ch -> type ) { sctp_walk_errors ( err , ch ) { if ( SCTP_ERROR_STALE_COOKIE == err -> cause ) { ootb_cookie_ack = 1 ; break ; } } } ch_end = ( ( __u8 * ) ch ) + SCTP_PAD4 ( ntohs ( ch -> length ) ) ; if ( ch_end > skb_tail_pointer ( skb ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; <S2SV_StartBug> ch = ( sctp_chunkhdr_t * ) ch_end ; <S2SV_EndBug> } while ( ch_end < skb_tail_pointer ( skb ) ) ; if ( ootb_shut_ack ) return sctp_sf_shut_8_4_5 ( net , ep , asoc , type , arg , commands ) ; else if ( ootb_cookie_ack ) return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; else return sctp_sf_tabort_8_4_8 ( net , ep , asoc , type , arg , commands ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> commands ) ; <S2SV_ModEnd> ch_end = ( <S2SV_ModStart> commands ) ; if ( SCTP_CID_SHUTDOWN_ACK == ch -> type ) ootb_shut_ack = 1 ; if ( SCTP_CID_ABORT == ch -> type ) return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; if ( SCTP_CID_COOKIE_ACK == ch -> type ) ootb_cookie_ack = 1 ; if ( SCTP_CID_ERROR == ch -> type ) { sctp_walk_errors ( err , ch ) { if ( SCTP_ERROR_STALE_COOKIE == err -> cause ) { ootb_cookie_ack = 1 ; break ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4653\n\n```\nCWE-416 static int snd_ctl_tlv_ioctl ( struct snd_ctl_file * file , struct snd_ctl_tlv __user * _tlv , int op_flag ) { struct snd_card * card = file -> card ; struct snd_ctl_tlv tlv ; struct snd_kcontrol * kctl ; struct snd_kcontrol_volatile * vd ; unsigned int len ; int err = 0 ; if ( copy_from_user ( & tlv , _tlv , sizeof ( tlv ) ) ) return - EFAULT ; if ( tlv . length < sizeof ( unsigned int ) * 2 ) return - EINVAL ; down_read ( & card -> controls_rwsem ) ; kctl = snd_ctl_find_numid ( card , tlv . numid ) ; if ( kctl == NULL ) { err = - ENOENT ; goto __kctl_end ; } if ( kctl -> tlv . p == NULL ) { err = - ENXIO ; goto __kctl_end ; } vd = & kctl -> vd [ tlv . numid - kctl -> id . numid ] ; if ( ( op_flag == 0 && ( vd -> access & SNDRV_CTL_ELEM_ACCESS_TLV_READ ) == 0 ) || ( op_flag > 0 && ( vd -> access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE ) == 0 ) || ( op_flag < 0 && ( vd -> access & SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND ) == 0 ) ) { err = - ENXIO ; goto __kctl_end ; } if ( vd -> access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK ) { if ( vd -> owner != NULL && vd -> owner != file ) { err = - EPERM ; goto __kctl_end ; } err = kctl -> tlv . c ( kctl , op_flag , tlv . length , _tlv -> tlv ) ; if ( err > 0 ) { <S2SV_StartBug> up_read ( & card -> controls_rwsem ) ; <S2SV_EndBug> <S2SV_StartBug> snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_TLV , & kctl -> id ) ; <S2SV_EndBug> return 0 ; } } else { if ( op_flag ) { err = - ENXIO ; goto __kctl_end ; } len = kctl -> tlv . p [ 1 ] + 2 * sizeof ( unsigned int ) ; if ( tlv . length < len ) { err = - ENOMEM ; goto __kctl_end ; } if ( copy_to_user ( _tlv -> tlv , kctl -> tlv . p , len ) ) err = - EFAULT ; } __kctl_end : up_read ( & card -> controls_rwsem ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { struct snd_ctl_elem_id id = kctl -> id ; <S2SV_ModStart> SNDRV_CTL_EVENT_MASK_TLV , & <S2SV_ModEnd> id ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13049\n\n```\nCWE-125 static void ubik_print ( netdissect_options * ndo , register const u_char * bp ) { int ubik_op ; int32_t temp ; ubik_op = EXTRACT_32BITS ( bp + sizeof ( struct rx_header ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>ubik<S2SV_blank>call<S2SV_blank>%s\" , tok2str ( ubik_req , \"op#%d\" , ubik_op ) ) ) ; bp += sizeof ( struct rx_header ) + 4 ; switch ( ubik_op ) { case 10000 : ND_TCHECK2 ( bp [ 0 ] , 4 ) ; temp = EXTRACT_32BITS ( bp ) ; bp += sizeof ( int32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>syncsite<S2SV_blank>%s\" , temp ? \"yes\" : \"no\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>votestart\" ) ) ; DATEOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>dbversion\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; break ; case 10003 : ND_PRINT ( ( ndo , \"<S2SV_blank>site\" ) ) ; UINTOUT ( ) ; break ; case 20000 : case 20001 : case 20007 : case 20008 : case 20010 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; break ; case 20002 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pos\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>length\" ) ) ; INTOUT ( ) ; <S2SV_StartBug> temp = EXTRACT_32BITS ( bp ) ; <S2SV_EndBug> bp += sizeof ( int32_t ) ; tok2str ( ubik_lock_types , \"type<S2SV_blank>%d\" , temp ) ; break ; case 20003 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pos\" ) ) ; INTOUT ( ) ; break ; case 20005 : ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; break ; case 20006 : ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>length\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>dbversion\" ) ) ; UBIK_VERSIONOUT ( ) ; break ; case 20009 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>length\" ) ) ; INTOUT ( ) ; break ; case 20012 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>oldversion\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>newversion\" ) ) ; UBIK_VERSIONOUT ( ) ; break ; default : ; } return ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|ubik]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; ND_TCHECK_32BITS ( bp ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4804\n\n```\nCWE-119 static void dump_boot ( DOS_FS * fs , struct boot_sector * b , unsigned lss ) { unsigned short sectors ; printf ( \"Boot<S2SV_blank>sector<S2SV_blank>contents:\\\\n\" ) ; if ( ! atari_format ) { char id [ 9 ] ; strncpy ( id , ( const char * ) b -> system_id , 8 ) ; id [ 8 ] = 0 ; printf ( \"System<S2SV_blank>ID<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , id ) ; } else { printf ( \"Serial<S2SV_blank>number<S2SV_blank>0x%x\\\\n\" , b -> system_id [ 5 ] | ( b -> system_id [ 6 ] << 8 ) | ( b -> system_id [ 7 ] << 16 ) ) ; } printf ( \"Media<S2SV_blank>byte<S2SV_blank>0x%02x<S2SV_blank>(%s)\\\\n\" , b -> media , get_media_descr ( b -> media ) ) ; printf ( \"%10d<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>logical<S2SV_blank>sector\\\\n\" , GET_UNALIGNED_W ( b -> sector_size ) ) ; printf ( \"%10d<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>cluster\\\\n\" , fs -> cluster_size ) ; printf ( \"%10d<S2SV_blank>reserved<S2SV_blank>sector%s\\\\n\" , le16toh ( b -> reserved ) , le16toh ( b -> reserved ) == 1 ? \"\" : \"s\" ) ; printf ( \"First<S2SV_blank>FAT<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>byte<S2SV_blank>%llu<S2SV_blank>(sector<S2SV_blank>%llu)\\\\n\" , ( unsigned long long ) fs -> fat_start , ( unsigned long long ) fs -> fat_start / lss ) ; printf ( \"%10d<S2SV_blank>FATs,<S2SV_blank>%d<S2SV_blank>bit<S2SV_blank>entries\\\\n\" , b -> fats , fs -> fat_bits ) ; <S2SV_StartBug> printf ( \"%10d<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>FAT<S2SV_blank>(=<S2SV_blank>%u<S2SV_blank>sectors)\\\\n\" , fs -> fat_size , <S2SV_EndBug> <S2SV_StartBug> fs -> fat_size / lss ) ; <S2SV_EndBug> if ( ! fs -> root_cluster ) { printf ( \"Root<S2SV_blank>directory<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>byte<S2SV_blank>%llu<S2SV_blank>(sector<S2SV_blank>%llu)\\\\n\" , ( unsigned long long ) fs -> root_start , ( unsigned long long ) fs -> root_start / lss ) ; printf ( \"%10d<S2SV_blank>root<S2SV_blank>directory<S2SV_blank>entries\\\\n\" , fs -> root_entries ) ; } else { printf ( \"Root<S2SV_blank>directory<S2SV_blank>start<S2SV_blank>at<S2SV_blank>cluster<S2SV_blank>%lu<S2SV_blank>(arbitrary<S2SV_blank>size)\\\\n\" , ( unsigned long ) fs -> root_cluster ) ; } printf ( \"Data<S2SV_blank>area<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>byte<S2SV_blank>%llu<S2SV_blank>(sector<S2SV_blank>%llu)\\\\n\" , ( unsigned long long ) fs -> data_start , ( unsigned long long ) fs -> data_start / lss ) ; printf ( \"%10lu<S2SV_blank>data<S2SV_blank>clusters<S2SV_blank>(%llu<S2SV_blank>bytes)\\\\n\" , ( unsigned long ) fs -> data_clusters , ( unsigned long long ) fs -> data_clusters * fs -> cluster_size ) ; printf ( \"%u<S2SV_blank>sectors/track,<S2SV_blank>%u<S2SV_blank>heads\\\\n\" , le16toh ( b -> secs_track ) , le16toh ( b -> heads ) ) ; printf ( \"%10u<S2SV_blank>hidden<S2SV_blank>sectors\\\\n\" , atari_format ? ( ( ( unsigned char * ) & b -> hidden ) [ 0 ] | ( ( unsigned char * ) & b -> hidden ) [ 1 ] << 8 ) : le32toh ( b -> hidden ) ) ; sectors = GET_UNALIGNED_W ( b -> sectors ) ; printf ( \"%10u<S2SV_blank>sectors<S2SV_blank>total\\\\n\" , sectors ? sectors : le32toh ( b -> total_sect ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; printf ( \"%10lld<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>FAT<S2SV_blank>(=<S2SV_blank>%llu<S2SV_blank>sectors)\\\\n\" , ( long long ) <S2SV_ModEnd> fs -> fat_size <S2SV_ModStart> -> fat_size , ( long long )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2174\n\n```\nCWE-119 CURLcode Curl_urldecode ( struct SessionHandle * data , const char * string , size_t length , char * * ostring , size_t * olen , bool reject_ctrl ) { size_t alloc = ( length ? length : strlen ( string ) ) + 1 ; char * ns = malloc ( alloc ) ; unsigned char in ; size_t strindex = 0 ; unsigned long hex ; CURLcode res ; if ( ! ns ) return CURLE_OUT_OF_MEMORY ; while ( -- alloc > 0 ) { in = * string ; <S2SV_StartBug> if ( ( '%' == in ) && ISXDIGIT ( string [ 1 ] ) && ISXDIGIT ( string [ 2 ] ) ) { <S2SV_EndBug> char hexstr [ 3 ] ; char * ptr ; hexstr [ 0 ] = string [ 1 ] ; hexstr [ 1 ] = string [ 2 ] ; hexstr [ 2 ] = 0 ; hex = strtoul ( hexstr , & ptr , 16 ) ; in = curlx_ultouc ( hex ) ; res = Curl_convert_from_network ( data , & in , 1 ) ; if ( res ) { free ( ns ) ; return res ; } string += 2 ; alloc -= 2 ; } if ( reject_ctrl && ( in < 0x20 ) ) { free ( ns ) ; return CURLE_URL_MALFORMAT ; } ns [ strindex ++ ] = in ; string ++ ; } ns [ strindex ] = 0 ; if ( olen ) * olen = strindex ; if ( ostring ) * ostring = ns ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in ) && ( alloc > 2 ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1739\n\n```\nCWE-200 static long media_device_enum_entities ( struct media_device * mdev , struct media_entity_desc __user * uent ) { struct media_entity * ent ; struct media_entity_desc u_ent ; <S2SV_StartBug> if ( copy_from_user ( & u_ent . id , & uent -> id , sizeof ( u_ent . id ) ) ) <S2SV_EndBug> return - EFAULT ; ent = find_entity ( mdev , u_ent . id ) ; if ( ent == NULL ) return - EINVAL ; u_ent . id = ent -> id ; if ( ent -> name ) { strncpy ( u_ent . name , ent -> name , sizeof ( u_ent . name ) ) ; u_ent . name [ sizeof ( u_ent . name ) - 1 ] = '\\\\0' ; } else { memset ( u_ent . name , 0 , sizeof ( u_ent . name ) ) ; } u_ent . type = ent -> type ; u_ent . revision = ent -> revision ; u_ent . flags = ent -> flags ; u_ent . group_id = ent -> group_id ; u_ent . pads = ent -> num_pads ; u_ent . links = ent -> num_links - ent -> num_backlinks ; memcpy ( & u_ent . raw , & ent -> info , sizeof ( ent -> info ) ) ; if ( copy_to_user ( uent , & u_ent , sizeof ( u_ent ) ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> media_entity_desc u_ent ; memset ( & u_ent , 0 , sizeof ( u_ent ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3183\n\n```\nCWE-125 static void sycc444_to_rgb ( opj_image_t * img ) { int * d0 , * d1 , * d2 , * r , * g , * b ; const int * y , * cb , * cr ; <S2SV_StartBug> unsigned int maxw , maxh , max , i ; <S2SV_EndBug> int offset , upb ; upb = ( int ) img -> comps [ 0 ] . prec ; offset = 1 << ( upb - 1 ) ; upb = ( 1 << upb ) - 1 ; <S2SV_StartBug> maxw = ( unsigned int ) img -> comps [ 0 ] . w ; maxh = ( unsigned int ) img -> comps [ 0 ] . h ; <S2SV_EndBug> max = maxw * maxh ; y = img -> comps [ 0 ] . data ; cb = img -> comps [ 1 ] . data ; cr = img -> comps [ 2 ] . data ; <S2SV_StartBug> d0 = r = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> <S2SV_StartBug> d1 = g = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> <S2SV_StartBug> d2 = b = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> if ( r == NULL || g == NULL || b == NULL ) goto fails ; for ( i = 0U ; i < max ; ++ i ) { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ cb ; ++ cr ; ++ r ; ++ g ; ++ b ; } free ( img -> comps [ 0 ] . data ) ; img -> comps [ 0 ] . data = d0 ; free ( img -> comps [ 1 ] . data ) ; img -> comps [ 1 ] . data = d1 ; free ( img -> comps [ 2 ] . data ) ; img -> comps [ 2 ] . data = d2 ; <S2SV_StartBug> return ; <S2SV_EndBug> fails : <S2SV_StartBug> if ( r ) free ( r ) ; <S2SV_EndBug> if ( g ) free ( g ) ; if ( b ) free ( b ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cr ; size_t <S2SV_ModEnd> maxw , maxh <S2SV_ModStart> maxw = ( size_t <S2SV_ModEnd> ) img -> <S2SV_ModStart> maxh = ( size_t <S2SV_ModEnd> ) img -> <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> = d2 ; img -> color_space = OPJ_CLRSPC_SRGB ; <S2SV_ModStart> ; fails : free ( r ) ; free ( g ) ; <S2SV_ModEnd> free ( b\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1444\n\n```\nCWE-399 static int fst_get_iface ( struct fst_card_info * card , struct fst_port_info * port , struct ifreq * ifr ) { sync_serial_settings sync ; int i ; switch ( port -> hwif ) { case E1 : ifr -> ifr_settings . type = IF_IFACE_E1 ; break ; case T1 : ifr -> ifr_settings . type = IF_IFACE_T1 ; break ; case V35 : ifr -> ifr_settings . type = IF_IFACE_V35 ; break ; case V24 : ifr -> ifr_settings . type = IF_IFACE_V24 ; break ; case X21D : ifr -> ifr_settings . type = IF_IFACE_X21D ; break ; case X21 : default : ifr -> ifr_settings . type = IF_IFACE_X21 ; break ; } if ( ifr -> ifr_settings . size == 0 ) { return 0 ; } if ( ifr -> ifr_settings . size < sizeof ( sync ) ) { return - ENOMEM ; } i = port -> index ; <S2SV_StartBug> sync . clock_rate = FST_RDL ( card , portConfig [ i ] . lineSpeed ) ; <S2SV_EndBug> sync . clock_type = FST_RDB ( card , portConfig [ i ] . internalClock ) == INTCLK ? CLOCK_INT : CLOCK_EXT ; sync . loopback = 0 ; if ( copy_to_user ( ifr -> ifr_settings . ifs_ifsu . sync , & sync , sizeof ( sync ) ) ) { return - EFAULT ; } ifr -> ifr_settings . size = sizeof ( sync ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> index ; memset ( & sync , 0 , sizeof ( sync ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7020\n\n```\nCWE-119 static int read_header ( FFV1Context * f ) { uint8_t state [ CONTEXT_SIZE ] ; int i , j , context_count = - 1 ; RangeCoder * const c = & f -> slice_context [ 0 ] -> c ; memset ( state , 128 , sizeof ( state ) ) ; if ( f -> version < 2 ) { <S2SV_StartBug> int chroma_planes , chroma_h_shift , chroma_v_shift , transparency ; <S2SV_EndBug> unsigned v = get_symbol ( c , state , 0 ) ; if ( v >= 2 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>ver01<S2SV_blank>header\\\\n\" , v ) ; return AVERROR_INVALIDDATA ; } f -> version = v ; f -> ac = f -> avctx -> coder_type = get_symbol ( c , state , 0 ) ; if ( f -> ac > 1 ) { for ( i = 1 ; i < 256 ; i ++ ) f -> state_transition [ i ] = get_symbol ( c , state , 1 ) + c -> one_state [ i ] ; } <S2SV_StartBug> f -> colorspace = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( f -> version > 0 ) <S2SV_EndBug> <S2SV_StartBug> f -> avctx -> bits_per_raw_sample = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> chroma_planes = get_rac ( c , state ) ; <S2SV_EndBug> <S2SV_StartBug> chroma_h_shift = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> chroma_v_shift = get_symbol ( c , state , 0 ) ; transparency = get_rac ( c , state ) ; if ( f -> plane_count ) { <S2SV_StartBug> if ( chroma_planes != f -> chroma_planes <S2SV_EndBug> || chroma_h_shift != f -> chroma_h_shift || chroma_v_shift != f -> chroma_v_shift || transparency != f -> transparency ) { av_log ( f -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>change<S2SV_blank>of<S2SV_blank>global<S2SV_blank>parameters\\\\n\" ) ; return AVERROR_INVALIDDATA ; } <S2SV_StartBug> } <S2SV_EndBug> f -> chroma_planes = chroma_planes ; f -> chroma_h_shift = chroma_h_shift ; f -> chroma_v_shift = chroma_v_shift ; f -> transparency = transparency ; f -> plane_count = 2 + f -> transparency ; } if ( f -> colorspace == 0 ) { if ( ! f -> transparency && ! f -> chroma_planes ) { if ( f -> avctx -> bits_per_raw_sample <= 8 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GRAY8 ; else f -> avctx -> pix_fmt = AV_PIX_FMT_GRAY16 ; } else if ( f -> avctx -> bits_per_raw_sample <= 8 && ! f -> transparency ) { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P ; break ; case 0x01 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV440P ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P ; break ; case 0x20 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV411P ; break ; case 0x22 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV410P ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample <= 8 && f -> transparency ) { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA444P ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA422P ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA420P ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample == 9 ) { f -> packed_at_lsb = 1 ; switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P9 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P9 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P9 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample == 10 ) { f -> packed_at_lsb = 1 ; switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P10 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P10 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P10 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P16 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P16 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P16 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } } else if ( f -> colorspace == 1 ) { if ( f -> chroma_h_shift || f -> chroma_v_shift ) { av_log ( f -> avctx , AV_LOG_ERROR , \"chroma<S2SV_blank>subsampling<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>this<S2SV_blank>colorspace\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } if ( f -> avctx -> bits_per_raw_sample == 9 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP9 ; else if ( f -> avctx -> bits_per_raw_sample == 10 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP10 ; else if ( f -> avctx -> bits_per_raw_sample == 12 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP12 ; else if ( f -> avctx -> bits_per_raw_sample == 14 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP14 ; else if ( f -> transparency ) f -> avctx -> pix_fmt = AV_PIX_FMT_RGB32 ; else f -> avctx -> pix_fmt = AV_PIX_FMT_0RGB32 ; } else { av_log ( f -> avctx , AV_LOG_ERROR , \"colorspace<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } av_dlog ( f -> avctx , \"%d<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , f -> chroma_h_shift , f -> chroma_v_shift , f -> avctx -> pix_fmt ) ; if ( f -> version < 2 ) { context_count = read_quant_tables ( c , f -> quant_table ) ; if ( context_count < 0 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"read_quant_table<S2SV_blank>error\\\\n\" ) ; return AVERROR_INVALIDDATA ; } } else if ( f -> version < 3 ) { f -> slice_count = get_symbol ( c , state , 0 ) ; } else { const uint8_t * p = c -> bytestream_end ; for ( f -> slice_count = 0 ; f -> slice_count < MAX_SLICES && 3 < p - c -> bytestream_start ; f -> slice_count ++ ) { int trailer = 3 + 5 * ! ! f -> ec ; int size = AV_RB24 ( p - trailer ) ; if ( size + trailer > p - c -> bytestream_start ) break ; p -= size + trailer ; } } if ( f -> slice_count > ( unsigned ) MAX_SLICES || f -> slice_count <= 0 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"slice<S2SV_blank>count<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\\\\n\" , f -> slice_count ) ; return AVERROR_INVALIDDATA ; } for ( j = 0 ; j < f -> slice_count ; j ++ ) { FFV1Context * fs = f -> slice_context [ j ] ; fs -> ac = f -> ac ; fs -> packed_at_lsb = f -> packed_at_lsb ; fs -> slice_damaged = 0 ; if ( f -> version == 2 ) { fs -> slice_x = get_symbol ( c , state , 0 ) * f -> width ; fs -> slice_y = get_symbol ( c , state , 0 ) * f -> height ; fs -> slice_width = ( get_symbol ( c , state , 0 ) + 1 ) * f -> width + fs -> slice_x ; fs -> slice_height = ( get_symbol ( c , state , 0 ) + 1 ) * f -> height + fs -> slice_y ; fs -> slice_x /= f -> num_h_slices ; fs -> slice_y /= f -> num_v_slices ; fs -> slice_width = fs -> slice_width / f -> num_h_slices - fs -> slice_x ; fs -> slice_height = fs -> slice_height / f -> num_v_slices - fs -> slice_y ; if ( ( unsigned ) fs -> slice_width > f -> width || ( unsigned ) fs -> slice_height > f -> height ) return AVERROR_INVALIDDATA ; if ( ( unsigned ) fs -> slice_x + ( uint64_t ) fs -> slice_width > f -> width || ( unsigned ) fs -> slice_y + ( uint64_t ) fs -> slice_height > f -> height ) return AVERROR_INVALIDDATA ; } for ( i = 0 ; i < f -> plane_count ; i ++ ) { PlaneContext * const p = & fs -> plane [ i ] ; if ( f -> version == 2 ) { int idx = get_symbol ( c , state , 0 ) ; if ( idx > ( unsigned ) f -> quant_table_count ) { av_log ( f -> avctx , AV_LOG_ERROR , \"quant_table_index<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" ) ; return AVERROR_INVALIDDATA ; } p -> quant_table_index = idx ; memcpy ( p -> quant_table , f -> quant_tables [ idx ] , sizeof ( p -> quant_table ) ) ; context_count = f -> context_count [ idx ] ; } else { memcpy ( p -> quant_table , f -> quant_table , sizeof ( p -> quant_table ) ) ; } if ( f -> version <= 2 ) { av_assert0 ( context_count >= 0 ) ; if ( p -> context_count < context_count ) { av_freep ( & p -> state ) ; av_freep ( & p -> vlc_state ) ; } p -> context_count = context_count ; } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> chroma_v_shift , transparency , colorspace , bits_per_raw_sample <S2SV_ModStart> ] ; } <S2SV_ModEnd> colorspace = get_symbol <S2SV_ModStart> 0 ) ; bits_per_raw_sample = <S2SV_ModEnd> f -> version <S2SV_ModStart> version > 0 ? get_symbol ( c , state , 0 ) : <S2SV_ModEnd> f -> avctx <S2SV_ModStart> avctx -> bits_per_raw_sample ; chroma_planes = get_rac ( c , state ) ; chroma_h_shift <S2SV_ModStart> 0 ) ; chroma_v_shift = get_symbol ( c , state , 0 ) ; transparency <S2SV_ModEnd> = get_rac ( <S2SV_ModStart> state ) ; <S2SV_ModEnd> if ( f <S2SV_ModStart> { if ( colorspace != f -> colorspace || bits_per_raw_sample != f -> avctx -> bits_per_raw_sample || <S2SV_ModStart> ; } } f -> colorspace = colorspace ; f -> avctx -> bits_per_raw_sample = bits_per_raw_sample ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-416 int fscrypt_get_encryption_info ( struct inode * inode ) { <S2SV_StartBug> struct fscrypt_info * ci = inode -> i_crypt_info ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ci || <S2SV_EndBug> ( ci -> ci_keyring_key && ( ci -> ci_keyring_key -> flags & ( ( 1 << KEY_FLAG_INVALIDATED ) | ( 1 << KEY_FLAG_REVOKED ) | ( 1 << KEY_FLAG_DEAD ) ) ) ) ) return fscrypt_get_crypt_info ( inode ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct fscrypt_info * crypt_info ; struct fscrypt_context ctx ; struct crypto_skcipher * ctfm ; const char * cipher_str ; int keysize ; u8 * raw_key = NULL ; int res ; if ( <S2SV_ModEnd> inode -> i_crypt_info <S2SV_ModStart> inode -> i_crypt_info ) return 0 ; res = fscrypt_initialize ( inode -> i_sb -> s_cop -> flags ) ; if ( res ) return res <S2SV_ModStart> if ( ! inode -> i_sb -> s_cop -> get_context ) return - EOPNOTSUPP ; res = inode -> i_sb -> s_cop -> get_context ( inode , & ctx , sizeof ( ctx ) ) ; if ( res < 0 ) { if ( ! fscrypt_dummy_context_enabled ( inode ) || inode -> i_sb -> s_cop -> is_encrypted ( inode ) ) return res ; memset ( & ctx , 0 , sizeof ( ctx ) ) ; ctx . format = FS_ENCRYPTION_CONTEXT_FORMAT_V1 ; ctx . contents_encryption_mode = FS_ENCRYPTION_MODE_AES_256_XTS ; ctx . filenames_encryption_mode = FS_ENCRYPTION_MODE_AES_256_CTS ; memset ( ctx . master_key_descriptor , 0x42 , FS_KEY_DESCRIPTOR_SIZE ) ; } else if ( res != sizeof ( ctx ) ) { return - EINVAL ; } if ( ctx . format != FS_ENCRYPTION_CONTEXT_FORMAT_V1 ) return - EINVAL ; if ( ctx . flags & ~ FS_POLICY_FLAGS_VALID ) return - EINVAL ; crypt_info = kmem_cache_alloc ( fscrypt_info_cachep , GFP_NOFS ) ; if ( ! crypt_info ) return - ENOMEM ; crypt_info -> ci_flags = ctx . flags ; crypt_info -> ci_data_mode = ctx . contents_encryption_mode ; crypt_info -> ci_filename_mode = ctx . filenames_encryption_mode ; crypt_info -> ci_ctfm = NULL ; memcpy ( crypt_info -> ci_master_key , ctx . master_key_descriptor , sizeof ( crypt_info -> ci_master_key ) ) ; res = determine_cipher_type ( crypt_info , inode , & cipher_str , & keysize ) ; if ( res ) goto out ; res = - ENOMEM ; raw_key = kmalloc ( FS_MAX_KEY_SIZE , GFP_NOFS ) ; if ( ! raw_key ) goto out ; res = validate_user_key ( crypt_info , & ctx , raw_key , FS_KEY_DESC_PREFIX ) ; if ( res && inode -> i_sb -> s_cop -> key_prefix ) { int res2 = validate_user_key ( crypt_info , & ctx , raw_key , inode -> i_sb -> s_cop -> key_prefix ) ; if ( res2 ) { if ( res2 == - ENOKEY ) res = - ENOKEY ; goto out ; } } else if ( res ) { goto out ; } ctfm = crypto_alloc_skcipher ( cipher_str , 0 , 0 ) ; if ( ! ctfm || IS_ERR ( ctfm ) ) { res = ctfm ? PTR_ERR ( ctfm ) : - ENOMEM ; printk ( KERN_DEBUG \"%s:<S2SV_blank>error<S2SV_blank>%d<S2SV_blank>(inode<S2SV_blank>%u)<S2SV_blank>allocating<S2SV_blank>crypto<S2SV_blank>tfm\\\\n\" , __func__ , res , ( unsigned ) inode -> i_ino ) ; goto out ; } crypt_info -> ci_ctfm = ctfm ; crypto_skcipher_clear_flags ( ctfm , ~ 0 ) ; crypto_skcipher_set_flags ( ctfm , CRYPTO_TFM_REQ_WEAK_KEY ) ; res = crypto_skcipher_setkey ( ctfm , raw_key , keysize ) ; if ( res ) goto out ; if ( cmpxchg ( & inode -> i_crypt_info , NULL , crypt_info ) == NULL ) crypt_info = NULL ; out : if ( res == - ENOKEY ) res = 0 ; put_crypt_info ( crypt_info ) ; kzfree ( raw_key ) ; return res <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void update_skip_probs ( VP9_COMMON * cm , vp9_writer * w ) { <S2SV_EndBug> int k ; for ( k = 0 ; k < SKIP_CONTEXTS ; ++ k ) <S2SV_StartBug> vp9_cond_prob_diff_update ( w , & cm -> fc . skip_probs [ k ] , cm -> counts . skip [ k ] ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cm , vpx_writer * w , FRAME_COUNTS * counts <S2SV_ModEnd> ) { int <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> skip_probs [ k <S2SV_ModStart> k ] , counts -> <S2SV_ModEnd> skip [ k\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 asmlinkage void kernel_unaligned_trap ( struct pt_regs * regs , unsigned int insn ) { enum direction dir = decode_direction ( insn ) ; int size = decode_access_size ( regs , insn ) ; int orig_asi , asi ; current_thread_info ( ) -> kern_una_regs = regs ; current_thread_info ( ) -> kern_una_insn = insn ; orig_asi = asi = decode_asi ( insn , regs ) ; if ( asi == ASI_AIUS ) { kernel_mna_trap_fault ( 0 ) ; return ; } log_unaligned ( regs ) ; if ( ! ok_for_kernel ( insn ) || dir == both ) { printk ( \"Unsupported<S2SV_blank>unaligned<S2SV_blank>load/store<S2SV_blank>trap<S2SV_blank>for<S2SV_blank>kernel<S2SV_blank>\" \"at<S2SV_blank><%016lx>.\\\\n\" , regs -> tpc ) ; unaligned_panic ( \"Kernel<S2SV_blank>does<S2SV_blank>fpu/atomic<S2SV_blank>\" \"unaligned<S2SV_blank>load/store.\" , regs ) ; kernel_mna_trap_fault ( 0 ) ; } else { unsigned long addr , * reg_addr ; int err ; addr = compute_effective_address ( regs , insn , ( ( insn >> 25 ) & 0x1f ) ) ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 , 0 , regs , addr ) ; <S2SV_EndBug> switch ( asi ) { case ASI_NL : case ASI_AIUPL : case ASI_AIUSL : case ASI_PL : case ASI_SL : case ASI_PNFL : case ASI_SNFL : asi &= ~ 0x08 ; break ; } switch ( dir ) { case load : reg_addr = fetch_reg_addr ( ( ( insn >> 25 ) & 0x1f ) , regs ) ; err = do_int_load ( reg_addr , size , ( unsigned long * ) addr , decode_signedness ( insn ) , asi ) ; if ( likely ( ! err ) && unlikely ( asi != orig_asi ) ) { unsigned long val_in = * reg_addr ; switch ( size ) { case 2 : val_in = swab16 ( val_in ) ; break ; case 4 : val_in = swab32 ( val_in ) ; break ; case 8 : val_in = swab64 ( val_in ) ; break ; case 16 : default : BUG ( ) ; break ; } * reg_addr = val_in ; } break ; case store : err = do_int_store ( ( ( insn >> 25 ) & 0x1f ) , size , ( unsigned long * ) addr , regs , asi , orig_asi ) ; break ; default : panic ( \"Impossible<S2SV_blank>kernel<S2SV_blank>unaligned<S2SV_blank>trap.\" ) ; } if ( unlikely ( err ) ) kernel_mna_trap_fault ( 1 ) ; else advance ( regs ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 static void * bpf_obj_do_get ( const struct filename * pathname , enum bpf_type * type ) { struct inode * inode ; struct path path ; void * raw ; int ret ; ret = kern_path ( pathname -> name , LOOKUP_FOLLOW , & path ) ; if ( ret ) return ERR_PTR ( ret ) ; inode = d_backing_inode ( path . dentry ) ; ret = inode_permission ( inode , MAY_WRITE ) ; if ( ret ) goto out ; ret = bpf_inode_type ( inode , type ) ; if ( ret ) goto out ; raw = bpf_any_get ( inode -> i_private , * type ) ; <S2SV_StartBug> touch_atime ( & path ) ; <S2SV_EndBug> path_put ( & path ) ; return raw ; out : path_put ( & path ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> type ) ; if ( ! IS_ERR ( raw ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20786\n\n```\nCWE-476 static VTermScreen * screen_new ( VTerm * vt ) { VTermState * state = vterm_obtain_state ( vt ) ; VTermScreen * screen ; int rows , cols ; <S2SV_StartBug> if ( ! state ) <S2SV_EndBug> return NULL ; <S2SV_StartBug> screen = vterm_allocator_malloc ( vt , sizeof ( VTermScreen ) ) ; <S2SV_EndBug> vterm_get_size ( vt , & rows , & cols ) ; screen -> vt = vt ; screen -> state = state ; screen -> damage_merge = VTERM_DAMAGE_CELL ; screen -> damaged . start_row = - 1 ; screen -> pending_scrollrect . start_row = - 1 ; screen -> rows = rows ; screen -> cols = cols ; screen -> callbacks = NULL ; screen -> cbdata = NULL ; screen -> buffers [ 0 ] = realloc_buffer ( screen , NULL , rows , cols ) ; screen -> buffer = screen -> buffers [ 0 ] ; screen -> sb_buffer = vterm_allocator_malloc ( screen -> vt , sizeof ( VTermScreenCell ) * cols ) ; <S2SV_StartBug> vterm_state_set_callbacks ( screen -> state , & state_cbs , screen ) ; <S2SV_EndBug> return screen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( state == NULL <S2SV_ModEnd> ) return NULL <S2SV_ModStart> VTermScreen ) ) ; if ( screen == NULL ) return NULL <S2SV_ModStart> cols ) ; if ( screen -> buffer == NULL || screen -> sb_buffer == NULL ) { vterm_screen_free ( screen ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static struct mnt_namespace * create_mnt_ns ( struct vfsmount * m ) { struct mnt_namespace * new_ns = alloc_mnt_ns ( & init_user_ns ) ; if ( ! IS_ERR ( new_ns ) ) { struct mount * mnt = real_mount ( m ) ; mnt -> mnt_ns = new_ns ; new_ns -> root = mnt ; <S2SV_StartBug> list_add ( & mnt -> mnt_list , & new_ns -> list ) ; <S2SV_EndBug> } else { mntput ( m ) ; } return new_ns ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = mnt ; new_ns -> mounts ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 TcpOption * tcpGetOption ( TcpHeader * segment , uint8_t kind ) { <S2SV_StartBug> size_t length ; <S2SV_EndBug> uint_t i ; TcpOption * option ; <S2SV_StartBug> if ( segment -> dataOffset < 5 ) <S2SV_EndBug> return NULL ; <S2SV_StartBug> length = segment -> dataOffset * 4 - sizeof ( TcpHeader ) ; <S2SV_EndBug> i = 0 ; while ( i < length ) { option = ( TcpOption * ) ( segment -> options + i ) ; <S2SV_StartBug> if ( option -> kind == TCP_OPTION_NOP ) <S2SV_EndBug> { i ++ ; <S2SV_StartBug> continue ; <S2SV_EndBug> } if ( option -> kind == TCP_OPTION_END ) break ; <S2SV_StartBug> if ( ( i + 1 ) >= length || ( i + option -> length ) > length ) <S2SV_EndBug> break ; if ( option -> kind == kind ) return option ; i += option -> length ; } <S2SV_StartBug> return NULL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { size_t i ; size_t length <S2SV_ModEnd> ; TcpOption * <S2SV_ModStart> segment -> dataOffset >= ( sizeof ( TcpHeader ) / 4 ) ) { length = ( <S2SV_ModEnd> segment -> dataOffset <S2SV_ModStart> dataOffset * 4 ) <S2SV_ModStart> -> kind == TCP_OPTION_END ) { break ; } else if ( option -> kind == <S2SV_ModStart> i ++ ; } else { <S2SV_ModEnd> if ( ( <S2SV_ModStart> ) >= length ) break ; if ( option -> length < sizeof ( TcpOption ) <S2SV_ModStart> length ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2385\n\n```\nCWE-119 int encode_msg ( struct sip_msg * msg , char * payload , int len ) { int i , j , k , u , request ; unsigned short int h ; struct hdr_field * hf ; struct msg_start * ms ; struct sip_uri miuri ; char * myerror = NULL ; ptrdiff_t diff ; if ( len < MAX_ENCODED_MSG + MAX_MESSAGE_LEN ) return - 1 ; if ( parse_headers ( msg , HDR_EOH_F , 0 ) < 0 ) { myerror = \"in<S2SV_blank>parse_headers\" ; goto error ; } memset ( payload , 0 , len ) ; ms = & msg -> first_line ; if ( ms -> type == SIP_REQUEST ) request = 1 ; else if ( ms -> type == SIP_REPLY ) request = 0 ; else { myerror = \"message<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>request<S2SV_blank>nor<S2SV_blank>response\" ; goto error ; } if ( request ) { for ( h = 0 ; h < 32 ; j = ( 0x01 << h ) , h ++ ) if ( j & ms -> u . request . method_value ) break ; } else { h = ( unsigned short ) ( ms -> u . reply . statuscode ) ; } if ( h == 32 ) { myerror = \"unknown<S2SV_blank>message<S2SV_blank>type\\\\n\" ; goto error ; } h = htons ( h ) ; memcpy ( payload , & h , 2 ) ; h = htons ( ( unsigned short int ) msg -> len ) ; memcpy ( & payload [ MSG_LEN_IDX ] , & h , 2 ) ; if ( 0 > ( diff = ( get_body ( msg ) - ( msg -> buf ) ) ) ) { myerror = \"body<S2SV_blank>starts<S2SV_blank>before<S2SV_blank>the<S2SV_blank>message<S2SV_blank>(uh<S2SV_blank>?)\" ; goto error ; } else h = htons ( ( unsigned short int ) diff ) ; memcpy ( payload + CONTENT_IDX , & h , 2 ) ; payload [ METHOD_CODE_IDX ] = ( unsigned char ) ( request ? ( ms -> u . request . method . s - msg -> buf ) : ( ms -> u . reply . status . s - msg -> buf ) ) ; payload [ METHOD_CODE_IDX + 1 ] = ( unsigned char ) ( request ? ( ms -> u . request . method . len ) : ( ms -> u . reply . status . len ) ) ; payload [ URI_REASON_IDX ] = ( unsigned char ) ( request ? ( ms -> u . request . uri . s - msg -> buf ) : ( ms -> u . reply . reason . s - msg -> buf ) ) ; payload [ URI_REASON_IDX + 1 ] = ( unsigned char ) ( request ? ( ms -> u . request . uri . len ) : ( ms -> u . reply . reason . len ) ) ; payload [ VERSION_IDX ] = ( unsigned char ) ( request ? ( ms -> u . request . version . s - msg -> buf ) : ( ms -> u . reply . version . s - msg -> buf ) ) ; if ( request ) { if ( parse_uri ( ms -> u . request . uri . s , ms -> u . request . uri . len , & miuri ) < 0 ) { LM_ERR ( \"<%.*s>\\\\n\" , ms -> u . request . uri . len , ms -> u . request . uri . s ) ; myerror = \"while<S2SV_blank>parsing<S2SV_blank>the<S2SV_blank>R-URI\" ; goto error ; } if ( 0 > ( j = encode_uri2 ( msg -> buf , ms -> u . request . method . s - msg -> buf + ms -> len , ms -> u . request . uri , & miuri , ( unsigned char * ) & payload [ REQUEST_URI_IDX + 1 ] ) ) ) { myerror = \"ENCODE_MSG:<S2SV_blank>ERROR<S2SV_blank>while<S2SV_blank>encoding<S2SV_blank>the<S2SV_blank>R-URI\" ; goto error ; } payload [ REQUEST_URI_IDX ] = ( unsigned char ) j ; k = REQUEST_URI_IDX + 1 + j ; } else k = REQUEST_URI_IDX ; u = k ; k ++ ; for ( i = 0 , hf = msg -> headers ; hf ; hf = hf -> next , i ++ ) ; i ++ ; j = k + 3 * i ; for ( i = 0 , hf = msg -> headers ; hf ; hf = hf -> next , k += 3 ) { payload [ k ] = ( unsigned char ) ( hf -> type & 0xFF ) ; h = htons ( j ) ; memcpy ( & payload [ k + 1 ] , & h , 2 ) ; if ( 0 > ( i = encode_header ( msg , hf , ( unsigned char * ) ( payload + j ) , MAX_ENCODED_MSG + MAX_MESSAGE_LEN - j ) ) ) { LM_ERR ( \"encoding<S2SV_blank>header<S2SV_blank>%.*s\\\\n\" , hf -> name . len , hf -> name . s ) ; goto error ; k -= 3 ; continue ; } j += ( unsigned short int ) i ; } payload [ u ] = ( unsigned char ) ( ( k - u - 1 ) / 3 ) ; j = htons ( j ) ; memcpy ( & payload [ k + 1 ] , & j , 2 ) ; k += 3 ; j = ntohs ( j ) ; <S2SV_StartBug> memcpy ( & payload [ j ] , msg -> buf , msg -> len ) ; <S2SV_EndBug> LM_DBG ( \"msglen<S2SV_blank>=<S2SV_blank>%d,msg<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>%d\\\\n\" , msg -> len , j ) ; j = htons ( j ) ; memcpy ( & payload [ MSG_START_IDX ] , & j , 2 ) ; return GET_PAY_SIZE ( payload ) ; error : LM_ERR ( \"%s\\\\n\" , myerror ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> j ) ; if ( len < j + msg -> len + 1 ) { LM_ERR ( \"not<S2SV_blank>enough<S2SV_blank>space<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>sip<S2SV_blank>message\\\\n\" ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int ipx_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct ipx_sock * ipxs = ipx_sk ( sk ) ; struct sockaddr_ipx * sipx = ( struct sockaddr_ipx * ) msg -> msg_name ; struct ipxhdr * ipx = NULL ; struct sk_buff * skb ; int copied , rc ; lock_sock ( sk ) ; if ( ! ipxs -> port ) { struct sockaddr_ipx uaddr ; uaddr . sipx_port = 0 ; uaddr . sipx_network = 0 ; # ifdef CONFIG_IPX_INTERN rc = - ENETDOWN ; if ( ! ipxs -> intrfc ) goto out ; memcpy ( uaddr . sipx_node , ipxs -> intrfc -> if_node , IPX_NODE_LEN ) ; # endif rc = __ipx_bind ( sock , ( struct sockaddr * ) & uaddr , sizeof ( struct sockaddr_ipx ) ) ; if ( rc ) goto out ; } rc = - ENOTCONN ; if ( sock_flag ( sk , SOCK_ZAPPED ) ) goto out ; skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & rc ) ; if ( ! skb ) goto out ; ipx = ipx_hdr ( skb ) ; copied = ntohs ( ipx -> ipx_pktsize ) - sizeof ( struct ipxhdr ) ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } rc = skb_copy_datagram_iovec ( skb , sizeof ( struct ipxhdr ) , msg -> msg_iov , copied ) ; if ( rc ) goto out_free ; if ( skb -> tstamp . tv64 ) sk -> sk_stamp = skb -> tstamp ; <S2SV_StartBug> msg -> msg_namelen = sizeof ( * sipx ) ; <S2SV_EndBug> if ( sipx ) { sipx -> sipx_family = AF_IPX ; sipx -> sipx_port = ipx -> ipx_source . sock ; memcpy ( sipx -> sipx_node , ipx -> ipx_source . node , IPX_NODE_LEN ) ; sipx -> sipx_network = IPX_SKB_CB ( skb ) -> ipx_source_net ; sipx -> sipx_type = ipx -> ipx_type ; sipx -> sipx_zero = 0 ; } rc = copied ; out_free : skb_free_datagram ( sk , skb ) ; out : release_sock ( sk ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> tstamp ; if ( sipx ) { sipx -> sipx_family = AF_IPX ; sipx -> sipx_port = ipx -> ipx_source . sock ; memcpy ( sipx -> sipx_node , ipx -> ipx_source . node , IPX_NODE_LEN ) ; sipx -> sipx_network = IPX_SKB_CB ( skb ) -> ipx_source_net ; sipx -> sipx_type = ipx -> ipx_type ; sipx -> sipx_zero = 0 ; <S2SV_ModStart> * sipx ) <S2SV_ModEnd> ; } rc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4127\n\n```\nCWE-399 static long vhost_net_set_backend ( struct vhost_net * n , unsigned index , int fd ) { struct socket * sock , * oldsock ; struct vhost_virtqueue * vq ; struct vhost_net_virtqueue * nvq ; struct vhost_net_ubuf_ref * ubufs , * oldubufs = NULL ; int r ; mutex_lock ( & n -> dev . mutex ) ; r = vhost_dev_check_owner ( & n -> dev ) ; if ( r ) goto err ; if ( index >= VHOST_NET_VQ_MAX ) { r = - ENOBUFS ; goto err ; } vq = & n -> vqs [ index ] . vq ; nvq = & n -> vqs [ index ] ; mutex_lock ( & vq -> mutex ) ; if ( ! vhost_vq_access_ok ( vq ) ) { r = - EFAULT ; goto err_vq ; } sock = get_socket ( fd ) ; if ( IS_ERR ( sock ) ) { r = PTR_ERR ( sock ) ; goto err_vq ; } oldsock = rcu_dereference_protected ( vq -> private_data , lockdep_is_held ( & vq -> mutex ) ) ; if ( sock != oldsock ) { ubufs = vhost_net_ubuf_alloc ( vq , sock && vhost_sock_zcopy ( sock ) ) ; if ( IS_ERR ( ubufs ) ) { r = PTR_ERR ( ubufs ) ; goto err_ubufs ; } vhost_net_disable_vq ( n , vq ) ; rcu_assign_pointer ( vq -> private_data , sock ) ; r = vhost_init_used ( vq ) ; if ( r ) goto err_used ; r = vhost_net_enable_vq ( n , vq ) ; if ( r ) goto err_used ; oldubufs = nvq -> ubufs ; nvq -> ubufs = ubufs ; n -> tx_packets = 0 ; n -> tx_zcopy_err = 0 ; n -> tx_flush = false ; } mutex_unlock ( & vq -> mutex ) ; if ( oldubufs ) { <S2SV_StartBug> vhost_net_ubuf_put_and_wait ( oldubufs ) ; <S2SV_EndBug> mutex_lock ( & vq -> mutex ) ; vhost_zerocopy_signal_used ( n , vq ) ; mutex_unlock ( & vq -> mutex ) ; } if ( oldsock ) { vhost_net_flush_vq ( n , index ) ; fput ( oldsock -> file ) ; } mutex_unlock ( & n -> dev . mutex ) ; return 0 ; err_used : rcu_assign_pointer ( vq -> private_data , oldsock ) ; vhost_net_enable_vq ( n , vq ) ; if ( ubufs ) <S2SV_StartBug> vhost_net_ubuf_put_and_wait ( ubufs ) ; <S2SV_EndBug> err_ubufs : fput ( sock -> file ) ; err_vq : mutex_unlock ( & vq -> mutex ) ; err : mutex_unlock ( & n -> dev . mutex ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> oldubufs ) { vhost_net_ubuf_put_wait_and_free <S2SV_ModEnd> ( oldubufs ) <S2SV_ModStart> ( ubufs ) vhost_net_ubuf_put_wait_and_free <S2SV_ModEnd> ( ubufs )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _consolefs_readv ( oe_fd_t * desc , const struct oe_iovec * iov , int iovcnt ) { ssize_t ret = - 1 ; file_t * file = _cast_file ( desc ) ; void * buf = NULL ; <S2SV_StartBug> size_t buf_size = 0 ; <S2SV_EndBug> if ( ! file || ! iov || iovcnt < 0 || iovcnt > OE_IOV_MAX ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( oe_iov_pack ( iov , iovcnt , & buf , & buf_size ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> OE_RAISE_ERRNO ( OE_ENOMEM ) ; <S2SV_EndBug> if ( oe_syscall_readv_ocall ( & ret , file -> host_fd , buf , iovcnt , buf_size ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> if ( oe_iov_sync ( iov , iovcnt , buf , buf_size ) != 0 ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; done : if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t buf_size = 0 ; size_t data_size <S2SV_ModStart> , & buf_size , & data_size <S2SV_ModStart> OE_RAISE_ERRNO ( OE_ENOMEM ) ; if ( data_size > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL <S2SV_ModStart> } if ( ret > ( ssize_t ) data_size ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> double vp9_convert_qindex_to_q ( int qindex ) { <S2SV_EndBug> <S2SV_StartBug> return vp9_ac_quant ( qindex , 0 ) / 4.0 ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( int qindex , vpx_bit_depth_t bit_depth ) { # if CONFIG_VP9_HIGHBITDEPTH switch ( bit_depth ) { case VPX_BITS_8 : <S2SV_ModEnd> return vp9_ac_quant ( <S2SV_ModStart> qindex , 0 , bit_depth <S2SV_ModStart> / 4.0 ; case VPX_BITS_10 : return vp9_ac_quant ( qindex , 0 , bit_depth ) / 16.0 ; case VPX_BITS_12 : return vp9_ac_quant ( qindex , 0 , bit_depth ) / 64.0 ; default : assert ( 0 && \"bit_depth<S2SV_blank>should<S2SV_blank>be<S2SV_blank>VPX_BITS_8,<S2SV_blank>VPX_BITS_10<S2SV_blank>or<S2SV_blank>VPX_BITS_12\" ) ; return - 1.0 ; } # else return vp9_ac_quant ( qindex , 0 , bit_depth ) / 4.0 ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 NOEXPORT char * base64 ( int encode , const char * in , int len ) { BIO * bio , * b64 ; char * out ; int n ; b64 = BIO_new ( BIO_f_base64 ( ) ) ; if ( ! b64 ) return NULL ; BIO_set_flags ( b64 , BIO_FLAGS_BASE64_NO_NL ) ; bio = BIO_new ( BIO_s_mem ( ) ) ; if ( ! bio ) { <S2SV_StartBug> str_free ( b64 ) ; <S2SV_EndBug> return NULL ; } if ( encode ) bio = BIO_push ( b64 , bio ) ; BIO_write ( bio , in , len ) ; ( void ) BIO_flush ( bio ) ; if ( encode ) { bio = BIO_pop ( bio ) ; BIO_free ( b64 ) ; } else { bio = BIO_push ( b64 , bio ) ; } n = BIO_pending ( bio ) ; out = str_alloc ( n < 32 ? 32 : ( size_t ) n + 1 ) ; n = BIO_read ( bio , out , n ) ; if ( n < 0 ) { BIO_free_all ( bio ) ; str_free ( out ) ; return NULL ; } BIO_free_all ( bio ) ; return out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bio ) { BIO_free <S2SV_ModEnd> ( b64 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10249\n\n```\nCWE-190 void * jas_malloc ( size_t size ) { void * result ; <S2SV_StartBug> JAS_DBGLOG ( 101 , ( \"jas_malloc<S2SV_blank>called<S2SV_blank>with<S2SV_blank>%zu\\\\n\" , size ) ) ; <S2SV_EndBug> result = malloc ( size ) ; JAS_DBGLOG ( 100 , ( \"jas_malloc(%zu)<S2SV_blank>-><S2SV_blank>%p\\\\n\" , size , result ) ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 101 , ( \"jas_malloc(%zu)\\\\n\" <S2SV_ModEnd> , size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2686\n\n```\nCWE-264 SYSCALL_DEFINE6 ( sendto , int , fd , void __user * , buff , size_t , len , unsigned int , flags , struct sockaddr __user * , addr , int , addr_len ) { struct socket * sock ; struct sockaddr_storage address ; int err ; struct msghdr msg ; struct iovec iov ; int fput_needed ; if ( len > INT_MAX ) <S2SV_StartBug> len = INT_MAX ; <S2SV_EndBug> sock = sockfd_lookup_light ( fd , & err , & fput_needed ) ; if ( ! sock ) goto out ; iov . iov_base = buff ; iov . iov_len = len ; msg . msg_name = NULL ; iov_iter_init ( & msg . msg_iter , WRITE , & iov , 1 , len ) ; msg . msg_control = NULL ; msg . msg_controllen = 0 ; msg . msg_namelen = 0 ; if ( addr ) { err = move_addr_to_kernel ( addr , addr_len , & address ) ; if ( err < 0 ) goto out_put ; msg . msg_name = ( struct sockaddr * ) & address ; msg . msg_namelen = addr_len ; } if ( sock -> file -> f_flags & O_NONBLOCK ) flags |= MSG_DONTWAIT ; msg . msg_flags = flags ; err = sock_sendmsg ( sock , & msg , len ) ; out_put : fput_light ( sock -> file , fput_needed ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = INT_MAX ; if ( unlikely ( ! access_ok ( VERIFY_READ , buff , len ) ) ) return - EFAULT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2634\n\n```\nCWE-399 static int dcbnl_ieee_fill ( struct sk_buff * skb , struct net_device * netdev ) { struct nlattr * ieee , * app ; struct dcb_app_type * itr ; const struct dcbnl_rtnl_ops * ops = netdev -> dcbnl_ops ; int dcbx ; int err ; if ( nla_put_string ( skb , DCB_ATTR_IFNAME , netdev -> name ) ) return - EMSGSIZE ; ieee = nla_nest_start ( skb , DCB_ATTR_IEEE ) ; if ( ! ieee ) return - EMSGSIZE ; if ( ops -> ieee_getets ) { struct ieee_ets ets ; <S2SV_StartBug> err = ops -> ieee_getets ( netdev , & ets ) ; <S2SV_EndBug> if ( ! err && nla_put ( skb , DCB_ATTR_IEEE_ETS , sizeof ( ets ) , & ets ) ) return - EMSGSIZE ; } if ( ops -> ieee_getmaxrate ) { struct ieee_maxrate maxrate ; <S2SV_StartBug> err = ops -> ieee_getmaxrate ( netdev , & maxrate ) ; <S2SV_EndBug> if ( ! err ) { err = nla_put ( skb , DCB_ATTR_IEEE_MAXRATE , sizeof ( maxrate ) , & maxrate ) ; if ( err ) return - EMSGSIZE ; } } if ( ops -> ieee_getpfc ) { <S2SV_StartBug> struct ieee_pfc pfc ; <S2SV_EndBug> err = ops -> ieee_getpfc ( netdev , & pfc ) ; if ( ! err && nla_put ( skb , DCB_ATTR_IEEE_PFC , sizeof ( pfc ) , & pfc ) ) return - EMSGSIZE ; } app = nla_nest_start ( skb , DCB_ATTR_IEEE_APP_TABLE ) ; if ( ! app ) return - EMSGSIZE ; spin_lock ( & dcb_lock ) ; list_for_each_entry ( itr , & dcb_app_list , list ) { if ( itr -> ifindex == netdev -> ifindex ) { err = nla_put ( skb , DCB_ATTR_IEEE_APP , sizeof ( itr -> app ) , & itr -> app ) ; if ( err ) { spin_unlock ( & dcb_lock ) ; return - EMSGSIZE ; } } } if ( netdev -> dcbnl_ops -> getdcbx ) dcbx = netdev -> dcbnl_ops -> getdcbx ( netdev ) ; else dcbx = - EOPNOTSUPP ; spin_unlock ( & dcb_lock ) ; nla_nest_end ( skb , app ) ; if ( ops -> ieee_peer_getets ) { struct ieee_ets ets ; <S2SV_StartBug> err = ops -> ieee_peer_getets ( netdev , & ets ) ; <S2SV_EndBug> if ( ! err && nla_put ( skb , DCB_ATTR_IEEE_PEER_ETS , sizeof ( ets ) , & ets ) ) return - EMSGSIZE ; } if ( ops -> ieee_peer_getpfc ) { <S2SV_StartBug> struct ieee_pfc pfc ; <S2SV_EndBug> err = ops -> ieee_peer_getpfc ( netdev , & pfc ) ; if ( ! err && nla_put ( skb , DCB_ATTR_IEEE_PEER_PFC , sizeof ( pfc ) , & pfc ) ) return - EMSGSIZE ; } if ( ops -> peer_getappinfo && ops -> peer_getapptable ) { err = dcbnl_build_peer_app ( netdev , skb , DCB_ATTR_IEEE_PEER_APP , DCB_ATTR_IEEE_APP_UNSPEC , DCB_ATTR_IEEE_APP ) ; if ( err ) return - EMSGSIZE ; } nla_nest_end ( skb , ieee ) ; if ( dcbx >= 0 ) { err = nla_put_u8 ( skb , DCB_ATTR_DCBX , dcbx ) ; if ( err ) return - EMSGSIZE ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ieee_ets ets ; memset ( & ets , 0 , sizeof ( ets ) ) ; <S2SV_ModStart> ieee_maxrate maxrate ; memset ( & maxrate , 0 , sizeof ( maxrate ) ) ; <S2SV_ModStart> struct ieee_pfc pfc ; memset ( & pfc , 0 , sizeof ( pfc ) ) <S2SV_ModStart> ieee_ets ets ; memset ( & ets , 0 , sizeof ( ets ) ) ; <S2SV_ModStart> struct ieee_pfc pfc ; memset ( & pfc , 0 , sizeof ( pfc ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int sco_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sco_pinfo * pi = sco_pi ( sk ) ; lock_sock ( sk ) ; if ( sk -> sk_state == BT_CONNECT2 && test_bit ( BT_SK_DEFER_SETUP , & bt_sk ( sk ) -> flags ) ) { sco_conn_defer_accept ( pi -> conn -> hcon , pi -> setting ) ; sk -> sk_state = BT_CONFIG ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> release_sock ( sk ) ; return 0 ; } release_sock ( sk ) ; return bt_sock_recvmsg ( iocb , sock , msg , len , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = BT_CONFIG ; <S2SV_ModEnd> release_sock ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-444(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7670\n\n```\nCWE-444 bool agoo_ws_create_req ( agooCon c , long mlen ) { uint8_t op = 0x0F & * c -> buf ; if ( NULL == ( c -> req = agoo_req_create ( mlen ) ) ) { agoo_log_cat ( & agoo_error_cat , \"Out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>request.\" ) ; return true ; } if ( NULL == c -> up || agoo_server . ctx_nil_value == c -> up -> ctx ) { return true ; } memset ( c -> req , 0 , sizeof ( struct _agooReq ) ) ; if ( ( long ) c -> bcnt <= mlen ) { memcpy ( c -> req -> msg , c -> buf , c -> bcnt ) ; if ( ( long ) c -> bcnt < mlen ) { memset ( c -> req -> msg + c -> bcnt , 0 , mlen - c -> bcnt ) ; } } else { memcpy ( c -> req -> msg , c -> buf , mlen ) ; } c -> req -> msg [ mlen ] = '\\\\0' ; c -> req -> mlen = mlen ; c -> req -> method = ( AGOO_WS_OP_BIN == op ) ? AGOO_ON_BIN : AGOO_ON_MSG ; c -> req -> upgrade = AGOO_UP_NONE ; c -> req -> up = c -> up ; <S2SV_StartBug> c -> req -> res = NULL ; <S2SV_EndBug> if ( c -> up -> on_msg ) { c -> req -> hook = agoo_hook_create ( AGOO_NONE , NULL , c -> up -> ctx , PUSH_HOOK , & agoo_server . eval_queue ) ; } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> up ; memcpy ( c -> req -> remote , c -> remote , sizeof ( c -> remote ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-172(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3829\n\n```\nCWE-172 WORD32 ih264d_end_of_pic ( dec_struct_t * ps_dec , UWORD8 u1_is_idr_slice , UWORD16 u2_frame_num ) { dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; <S2SV_StartBug> WORD32 ret ; <S2SV_EndBug> ps_dec -> u1_first_pb_nal_in_pic = 1 ; ps_dec -> u2_mbx = 0xffff ; ps_dec -> u2_mby = 0 ; { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } } H264_MUTEX_LOCK ( & ps_dec -> process_disp_mutex ) ; ret = ih264d_end_of_pic_processing ( ps_dec ) ; if ( ret != OK ) return ret ; ps_dec -> u2_total_mbs_coded = 0 ; { pocstruct_t * ps_prev_poc = & ps_dec -> s_prev_pic_poc ; pocstruct_t * ps_cur_poc = & ps_dec -> s_cur_pic_poc ; if ( ( 0 == u1_is_idr_slice ) && ps_cur_slice -> u1_nal_ref_idc ) ps_dec -> u2_prev_ref_frame_num = ps_cur_slice -> u2_frame_num ; if ( u1_is_idr_slice || ps_cur_slice -> u1_mmco_equalto5 ) ps_dec -> u2_prev_ref_frame_num = 0 ; if ( ps_dec -> ps_cur_sps -> u1_gaps_in_frame_num_value_allowed_flag ) { ret = ih264d_decode_gaps_in_frame_num ( ps_dec , u2_frame_num ) ; if ( ret != OK ) return ret ; } ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst ; ps_prev_poc -> u2_frame_num = ps_cur_poc -> u2_frame_num ; ps_prev_poc -> u1_mmco_equalto5 = ps_cur_slice -> u1_mmco_equalto5 ; if ( ps_cur_slice -> u1_nal_ref_idc ) { ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] ; ps_prev_poc -> u1_bot_field = ps_cur_poc -> u1_bot_field ; } } H264_MUTEX_UNLOCK ( & ps_dec -> process_disp_mutex ) ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; WORD32 ret <S2SV_ModEnd> ; ps_dec ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3183\n\n```\nCWE-20 static apr_status_t parse_chunk_size ( http_ctx_t * ctx , const char * buffer , apr_size_t len , int linelimit ) { apr_size_t i = 0 ; while ( i < len ) { char c = buffer [ i ] ; ap_xlate_proto_from_ascii ( & c , 1 ) ; <S2SV_StartBug> if ( ctx -> state == BODY_CHUNK_END ) { <S2SV_EndBug> if ( c == LF ) { <S2SV_StartBug> ctx -> state = BODY_CHUNK ; <S2SV_EndBug> } i ++ ; continue ; } if ( ctx -> state == BODY_CHUNK ) { if ( ! apr_isxdigit ( c ) ) { <S2SV_StartBug> return APR_EGENERAL ; <S2SV_EndBug> } else { ctx -> state = BODY_CHUNK_PART ; } ctx -> remaining = 0 ; <S2SV_StartBug> ctx -> chunkbits = sizeof ( long ) * 8 ; <S2SV_EndBug> ctx -> chunk_used = 0 ; } <S2SV_StartBug> if ( c == ';' || c == CR ) { <S2SV_EndBug> ctx -> state = BODY_CHUNK_EXT ; } <S2SV_StartBug> else if ( c == LF ) { <S2SV_EndBug> if ( ctx -> remaining ) { ctx -> state = BODY_CHUNK_DATA ; } else { ctx -> state = BODY_CHUNK_TRAILER ; } } else if ( ctx -> state != BODY_CHUNK_EXT ) { <S2SV_StartBug> int xvalue = 0 ; <S2SV_EndBug> if ( ! ctx -> remaining && c == '0' ) { i ++ ; <S2SV_StartBug> continue ; <S2SV_EndBug> } if ( c >= '0' && c <= '9' ) { xvalue = c - '0' ; } else if ( c >= 'A' && c <= 'F' ) { xvalue = c - 'A' + 0xa ; } else if ( c >= 'a' && c <= 'f' ) { xvalue = c - 'a' + 0xa ; } else { <S2SV_StartBug> return APR_EGENERAL ; <S2SV_EndBug> } ctx -> remaining = ( ctx -> remaining << 4 ) | xvalue ; <S2SV_StartBug> ctx -> chunkbits -= 4 ; <S2SV_EndBug> if ( ctx -> chunkbits <= 0 || ctx -> remaining < 0 ) { return APR_ENOSPC ; <S2SV_StartBug> } <S2SV_EndBug> } i ++ ; } ctx -> chunk_used += len ; if ( ctx -> chunk_used < 0 || ctx -> chunk_used > linelimit ) { return APR_ENOSPC ; } return APR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> state == BODY_CHUNK_END || ctx -> state == BODY_CHUNK_END_LF <S2SV_ModStart> state = BODY_CHUNK ; } else if ( c == CR && ctx -> state == BODY_CHUNK_END ) { ctx -> state = BODY_CHUNK_END_LF ; } else { return APR_EINVAL <S2SV_ModStart> ) { return APR_EINVAL <S2SV_ModEnd> ; } else <S2SV_ModStart> = sizeof ( apr_off_t <S2SV_ModEnd> ) * 8 <S2SV_ModStart> ( c == LF ) { if ( ctx -> remaining ) { ctx -> state = BODY_CHUNK_DATA ; } else { ctx -> state = BODY_CHUNK_TRAILER ; } } else if ( ctx -> state == BODY_CHUNK_LF ) { return APR_EINVAL ; } else if ( c == CR ) { ctx -> state = BODY_CHUNK_LF ; } else if ( c == ';' <S2SV_ModEnd> ) { ctx <S2SV_ModStart> else if ( ctx -> state == BODY_CHUNK_EXT ) { if ( c != '\\\\t' && apr_iscntrl ( c ) ) { return APR_EINVAL ; } } else if ( ctx -> state == BODY_CHUNK_PART <S2SV_ModEnd> ) { int <S2SV_ModStart> { int xvalue <S2SV_ModEnd> ; if ( <S2SV_ModStart> ++ ; continue ; } ctx -> chunkbits -= 4 ; if ( ctx -> chunkbits < 0 ) { return APR_ENOSPC <S2SV_ModStart> else { return APR_EINVAL <S2SV_ModEnd> ; } ctx <S2SV_ModStart> | xvalue ; if ( <S2SV_ModEnd> ctx -> remaining <S2SV_ModStart> APR_ENOSPC ; } } else { return APR_EGENERAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7441\n\n```\nCWE-399 void serveloop ( GArray * servers ) { struct sockaddr_storage addrin ; socklen_t addrinlen = sizeof ( addrin ) ; int i ; int max ; fd_set mset ; fd_set rset ; max = 0 ; FD_ZERO ( & mset ) ; for ( i = 0 ; i < servers -> len ; i ++ ) { int sock ; if ( ( sock = ( g_array_index ( servers , SERVER , i ) ) . socket ) >= 0 ) { FD_SET ( sock , & mset ) ; max = sock > max ? sock : max ; } } for ( i = 0 ; i < modernsocks -> len ; i ++ ) { int sock = g_array_index ( modernsocks , int , i ) ; FD_SET ( sock , & mset ) ; max = sock > max ? sock : max ; } for ( ; ; ) { if ( is_sighup_caught ) { int n ; GError * gerror = NULL ; msg ( LOG_INFO , \"reconfiguration<S2SV_blank>request<S2SV_blank>received\" ) ; is_sighup_caught = 0 ; n = append_new_servers ( servers , & gerror ) ; if ( n == - 1 ) msg ( LOG_ERR , \"failed<S2SV_blank>to<S2SV_blank>append<S2SV_blank>new<S2SV_blank>servers:<S2SV_blank>%s\" , gerror -> message ) ; for ( i = servers -> len - n ; i < servers -> len ; ++ i ) { const SERVER server = g_array_index ( servers , SERVER , i ) ; if ( server . socket >= 0 ) { FD_SET ( server . socket , & mset ) ; max = server . socket > max ? server . socket : max ; } msg ( LOG_INFO , \"reconfigured<S2SV_blank>new<S2SV_blank>server:<S2SV_blank>%s\" , server . servename ) ; } } memcpy ( & rset , & mset , sizeof ( fd_set ) ) ; if ( select ( max + 1 , & rset , NULL , NULL , NULL ) > 0 ) { <S2SV_StartBug> int net ; <S2SV_EndBug> DEBUG ( \"accept,<S2SV_blank>\" ) ; for ( i = 0 ; i < modernsocks -> len ; i ++ ) { int sock = g_array_index ( modernsocks , int , i ) ; if ( ! FD_ISSET ( sock , & rset ) ) { continue ; } <S2SV_StartBug> CLIENT * client ; <S2SV_EndBug> <S2SV_StartBug> if ( ( net = accept ( sock , ( struct sockaddr * ) & addrin , & addrinlen ) ) < 0 ) { <S2SV_EndBug> err_nonfatal ( \"accept:<S2SV_blank>%m\" ) ; continue ; } <S2SV_StartBug> client = negotiate ( net , NULL , servers , NEG_INIT | NEG_MODERN ) ; <S2SV_EndBug> if ( ! client ) { close ( net ) ; continue ; } handle_connection ( servers , net , client -> server , client ) ; } for ( i = 0 ; i < servers -> len ; i ++ ) { SERVER * serve ; serve = & ( g_array_index ( servers , SERVER , i ) ) ; if ( serve -> socket < 0 ) { continue ; } if ( FD_ISSET ( serve -> socket , & rset ) ) { if ( ( net = accept ( serve -> socket , ( struct sockaddr * ) & addrin , & addrinlen ) ) < 0 ) { err_nonfatal ( \"accept:<S2SV_blank>%m\" ) ; continue ; } handle_connection ( servers , net , serve , NULL ) ; } } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { <S2SV_ModEnd> DEBUG ( \"accept,<S2SV_blank>\" <S2SV_ModStart> continue ; } handle_modern_connection ( servers , sock ) ; } for ( i = 0 ; i < servers -> len ; i ++ ) { int net ; SERVER * serve ; serve = & ( g_array_index ( servers , SERVER , i ) ) ; if ( serve -> socket < 0 ) { continue ; } if ( FD_ISSET ( serve -> socket , & rset ) ) { <S2SV_ModEnd> if ( ( <S2SV_ModStart> = accept ( serve -> socket <S2SV_ModEnd> , ( struct <S2SV_ModStart> continue ; } handle_connection ( servers , net , serve , NULL <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11080\n\n```\nCWE-400 int main ( ) { CU_pSuite pSuite = NULL ; unsigned int num_tests_failed ; nghttp2_enable_strict_preface = 0 ; if ( CUE_SUCCESS != CU_initialize_registry ( ) ) return ( int ) CU_get_error ( ) ; pSuite = CU_add_suite ( \"libnghttp2_TestSuite\" , init_suite1 , clean_suite1 ) ; if ( NULL == pSuite ) { CU_cleanup_registry ( ) ; return ( int ) CU_get_error ( ) ; } if ( ! CU_add_test ( pSuite , \"pq\" , test_nghttp2_pq ) || ! CU_add_test ( pSuite , \"pq_update\" , test_nghttp2_pq_update ) || ! CU_add_test ( pSuite , \"pq_remove\" , test_nghttp2_pq_remove ) || ! CU_add_test ( pSuite , \"map\" , test_nghttp2_map ) || ! CU_add_test ( pSuite , \"map_functional\" , test_nghttp2_map_functional ) || ! CU_add_test ( pSuite , \"map_each_free\" , test_nghttp2_map_each_free ) || ! CU_add_test ( pSuite , \"queue\" , test_nghttp2_queue ) || ! CU_add_test ( pSuite , \"npn\" , test_nghttp2_npn ) || ! CU_add_test ( pSuite , \"session_recv\" , test_nghttp2_session_recv ) || ! CU_add_test ( pSuite , \"session_recv_invalid_stream_id\" , test_nghttp2_session_recv_invalid_stream_id ) || ! CU_add_test ( pSuite , \"session_recv_invalid_frame\" , test_nghttp2_session_recv_invalid_frame ) || ! CU_add_test ( pSuite , \"session_recv_eof\" , test_nghttp2_session_recv_eof ) || ! CU_add_test ( pSuite , \"session_recv_data\" , test_nghttp2_session_recv_data ) || ! CU_add_test ( pSuite , \"session_recv_data_no_auto_flow_control\" , test_nghttp2_session_recv_data_no_auto_flow_control ) || ! CU_add_test ( pSuite , \"session_recv_continuation\" , test_nghttp2_session_recv_continuation ) || ! CU_add_test ( pSuite , \"session_recv_headers_with_priority\" , test_nghttp2_session_recv_headers_with_priority ) || ! CU_add_test ( pSuite , \"session_recv_headers_with_padding\" , test_nghttp2_session_recv_headers_with_padding ) || ! CU_add_test ( pSuite , \"session_recv_headers_early_response\" , test_nghttp2_session_recv_headers_early_response ) || ! CU_add_test ( pSuite , \"session_recv_headers_for_closed_stream\" , test_nghttp2_session_recv_headers_for_closed_stream ) || ! CU_add_test ( pSuite , \"session_server_recv_push_response\" , test_nghttp2_session_server_recv_push_response ) || ! CU_add_test ( pSuite , \"session_recv_premature_headers\" , test_nghttp2_session_recv_premature_headers ) || ! CU_add_test ( pSuite , \"session_recv_unknown_frame\" , test_nghttp2_session_recv_unknown_frame ) || ! CU_add_test ( pSuite , \"session_recv_unexpected_continuation\" , test_nghttp2_session_recv_unexpected_continuation ) || ! CU_add_test ( pSuite , \"session_recv_settings_header_table_size\" , test_nghttp2_session_recv_settings_header_table_size ) || ! CU_add_test ( pSuite , \"session_recv_too_large_frame_length\" , test_nghttp2_session_recv_too_large_frame_length ) || ! CU_add_test ( pSuite , \"session_recv_extension\" , test_nghttp2_session_recv_extension ) || ! CU_add_test ( pSuite , \"session_recv_altsvc\" , test_nghttp2_session_recv_altsvc ) || ! CU_add_test ( pSuite , \"session_recv_origin\" , test_nghttp2_session_recv_origin ) || ! CU_add_test ( pSuite , \"session_continue\" , test_nghttp2_session_continue ) || ! CU_add_test ( pSuite , \"session_add_frame\" , test_nghttp2_session_add_frame ) || ! CU_add_test ( pSuite , \"session_on_request_headers_received\" , test_nghttp2_session_on_request_headers_received ) || ! CU_add_test ( pSuite , \"session_on_response_headers_received\" , test_nghttp2_session_on_response_headers_received ) || ! CU_add_test ( pSuite , \"session_on_headers_received\" , test_nghttp2_session_on_headers_received ) || ! CU_add_test ( pSuite , \"session_on_push_response_headers_received\" , test_nghttp2_session_on_push_response_headers_received ) || ! CU_add_test ( pSuite , \"session_on_priority_received\" , test_nghttp2_session_on_priority_received ) || ! CU_add_test ( pSuite , \"session_on_rst_stream_received\" , test_nghttp2_session_on_rst_stream_received ) || ! CU_add_test ( pSuite , \"session_on_settings_received\" , test_nghttp2_session_on_settings_received ) || ! CU_add_test ( pSuite , \"session_on_push_promise_received\" , test_nghttp2_session_on_push_promise_received ) || ! CU_add_test ( pSuite , \"session_on_ping_received\" , test_nghttp2_session_on_ping_received ) || ! CU_add_test ( pSuite , \"session_on_goaway_received\" , test_nghttp2_session_on_goaway_received ) || ! CU_add_test ( pSuite , \"session_on_window_update_received\" , test_nghttp2_session_on_window_update_received ) || ! CU_add_test ( pSuite , \"session_on_data_received\" , test_nghttp2_session_on_data_received ) || ! CU_add_test ( pSuite , \"session_on_data_received_fail_fast\" , test_nghttp2_session_on_data_received_fail_fast ) || ! CU_add_test ( pSuite , \"session_on_altsvc_received\" , test_nghttp2_session_on_altsvc_received ) || ! CU_add_test ( pSuite , \"session_send_headers_start_stream\" , test_nghttp2_session_send_headers_start_stream ) || ! CU_add_test ( pSuite , \"session_send_headers_reply\" , test_nghttp2_session_send_headers_reply ) || ! CU_add_test ( pSuite , \"session_send_headers_frame_size_error\" , test_nghttp2_session_send_headers_frame_size_error ) || ! CU_add_test ( pSuite , \"session_send_headers_push_reply\" , test_nghttp2_session_send_headers_push_reply ) || ! CU_add_test ( pSuite , \"session_send_rst_stream\" , test_nghttp2_session_send_rst_stream ) || ! CU_add_test ( pSuite , \"session_send_push_promise\" , test_nghttp2_session_send_push_promise ) || ! CU_add_test ( pSuite , \"session_is_my_stream_id\" , test_nghttp2_session_is_my_stream_id ) || ! CU_add_test ( pSuite , \"session_upgrade2\" , test_nghttp2_session_upgrade2 ) || ! CU_add_test ( pSuite , \"session_reprioritize_stream\" , test_nghttp2_session_reprioritize_stream ) || ! CU_add_test ( pSuite , \"session_reprioritize_stream_with_idle_stream_dep\" , test_nghttp2_session_reprioritize_stream_with_idle_stream_dep ) || ! CU_add_test ( pSuite , \"submit_data\" , test_nghttp2_submit_data ) || ! CU_add_test ( pSuite , \"submit_data_read_length_too_large\" , test_nghttp2_submit_data_read_length_too_large ) || ! CU_add_test ( pSuite , \"submit_data_read_length_smallest\" , test_nghttp2_submit_data_read_length_smallest ) || ! CU_add_test ( pSuite , \"submit_data_twice\" , test_nghttp2_submit_data_twice ) || ! CU_add_test ( pSuite , \"submit_request_with_data\" , test_nghttp2_submit_request_with_data ) || ! CU_add_test ( pSuite , \"submit_request_without_data\" , test_nghttp2_submit_request_without_data ) || ! CU_add_test ( pSuite , \"submit_response_with_data\" , test_nghttp2_submit_response_with_data ) || ! CU_add_test ( pSuite , \"submit_response_without_data\" , test_nghttp2_submit_response_without_data ) || ! CU_add_test ( pSuite , \"Submit_response_push_response\" , test_nghttp2_submit_response_push_response ) || ! CU_add_test ( pSuite , \"submit_trailer\" , test_nghttp2_submit_trailer ) || ! CU_add_test ( pSuite , \"submit_headers_start_stream\" , test_nghttp2_submit_headers_start_stream ) || ! CU_add_test ( pSuite , \"submit_headers_reply\" , test_nghttp2_submit_headers_reply ) || ! CU_add_test ( pSuite , \"submit_headers_push_reply\" , test_nghttp2_submit_headers_push_reply ) || ! CU_add_test ( pSuite , \"submit_headers\" , test_nghttp2_submit_headers ) || ! CU_add_test ( pSuite , \"submit_headers_continuation\" , test_nghttp2_submit_headers_continuation ) || ! CU_add_test ( pSuite , \"submit_headers_continuation_extra_large\" , test_nghttp2_submit_headers_continuation_extra_large ) || ! CU_add_test ( pSuite , \"submit_priority\" , test_nghttp2_submit_priority ) || ! CU_add_test ( pSuite , \"session_submit_settings\" , test_nghttp2_submit_settings ) || ! CU_add_test ( pSuite , \"session_submit_settings_update_local_window_size\" , test_nghttp2_submit_settings_update_local_window_size ) || ! CU_add_test ( pSuite , \"session_submit_settings_multiple_times\" , test_nghttp2_submit_settings_multiple_times ) || ! CU_add_test ( pSuite , \"session_submit_push_promise\" , test_nghttp2_submit_push_promise ) || ! CU_add_test ( pSuite , \"submit_window_update\" , test_nghttp2_submit_window_update ) || ! CU_add_test ( pSuite , \"submit_window_update_local_window_size\" , test_nghttp2_submit_window_update_local_window_size ) || ! CU_add_test ( pSuite , \"submit_shutdown_notice\" , test_nghttp2_submit_shutdown_notice ) || ! CU_add_test ( pSuite , \"submit_invalid_nv\" , test_nghttp2_submit_invalid_nv ) || ! CU_add_test ( pSuite , \"submit_extension\" , test_nghttp2_submit_extension ) || ! CU_add_test ( pSuite , \"submit_altsvc\" , test_nghttp2_submit_altsvc ) || ! CU_add_test ( pSuite , \"submit_origin\" , test_nghttp2_submit_origin ) || ! CU_add_test ( pSuite , \"session_open_stream\" , test_nghttp2_session_open_stream ) || ! CU_add_test ( pSuite , \"session_open_stream_with_idle_stream_dep\" , test_nghttp2_session_open_stream_with_idle_stream_dep ) || ! CU_add_test ( pSuite , \"session_get_next_ob_item\" , test_nghttp2_session_get_next_ob_item ) || ! CU_add_test ( pSuite , \"session_pop_next_ob_item\" , test_nghttp2_session_pop_next_ob_item ) || ! CU_add_test ( pSuite , \"session_reply_fail\" , test_nghttp2_session_reply_fail ) || ! CU_add_test ( pSuite , \"session_max_concurrent_streams\" , test_nghttp2_session_max_concurrent_streams ) || ! CU_add_test ( pSuite , \"session_stop_data_with_rst_stream\" , test_nghttp2_session_stop_data_with_rst_stream ) || ! CU_add_test ( pSuite , \"session_defer_data\" , test_nghttp2_session_defer_data ) || ! CU_add_test ( pSuite , \"session_flow_control\" , test_nghttp2_session_flow_control ) || ! CU_add_test ( pSuite , \"session_flow_control_data_recv\" , test_nghttp2_session_flow_control_data_recv ) || ! CU_add_test ( pSuite , \"session_flow_control_data_with_padding_recv\" , test_nghttp2_session_flow_control_data_with_padding_recv ) || ! CU_add_test ( pSuite , \"session_data_read_temporal_failure\" , test_nghttp2_session_data_read_temporal_failure ) || ! CU_add_test ( pSuite , \"session_on_stream_close\" , test_nghttp2_session_on_stream_close ) || ! CU_add_test ( pSuite , \"session_on_ctrl_not_send\" , test_nghttp2_session_on_ctrl_not_send ) || ! CU_add_test ( pSuite , \"session_get_outbound_queue_size\" , test_nghttp2_session_get_outbound_queue_size ) || ! CU_add_test ( pSuite , \"session_get_effective_local_window_size\" , test_nghttp2_session_get_effective_local_window_size ) || ! CU_add_test ( pSuite , \"session_set_option\" , test_nghttp2_session_set_option ) || ! CU_add_test ( pSuite , \"session_data_backoff_by_high_pri_frame\" , test_nghttp2_session_data_backoff_by_high_pri_frame ) || ! CU_add_test ( pSuite , \"session_pack_data_with_padding\" , test_nghttp2_session_pack_data_with_padding ) || ! CU_add_test ( pSuite , \"session_pack_headers_with_padding\" , test_nghttp2_session_pack_headers_with_padding ) || ! CU_add_test ( pSuite , \"pack_settings_payload\" , test_nghttp2_pack_settings_payload ) || ! CU_add_test ( pSuite , \"session_stream_dep_add\" , test_nghttp2_session_stream_dep_add ) || ! CU_add_test ( pSuite , \"session_stream_dep_remove\" , test_nghttp2_session_stream_dep_remove ) || ! CU_add_test ( pSuite , \"session_stream_dep_add_subtree\" , test_nghttp2_session_stream_dep_add_subtree ) || ! CU_add_test ( pSuite , \"session_stream_dep_remove_subtree\" , test_nghttp2_session_stream_dep_remove_subtree ) || ! CU_add_test ( pSuite , \"session_stream_dep_all_your_stream_are_belong_to_us\" , test_nghttp2_session_stream_dep_all_your_stream_are_belong_to_us ) || ! CU_add_test ( pSuite , \"session_stream_attach_item\" , test_nghttp2_session_stream_attach_item ) || ! CU_add_test ( pSuite , \"session_stream_attach_item_subtree\" , test_nghttp2_session_stream_attach_item_subtree ) || ! CU_add_test ( pSuite , \"session_stream_get_state\" , test_nghttp2_session_stream_get_state ) || ! CU_add_test ( pSuite , \"session_stream_get_something\" , test_nghttp2_session_stream_get_something ) || ! CU_add_test ( pSuite , \"session_find_stream\" , test_nghttp2_session_find_stream ) || ! CU_add_test ( pSuite , \"session_keep_closed_stream\" , test_nghttp2_session_keep_closed_stream ) || ! CU_add_test ( pSuite , \"session_keep_idle_stream\" , test_nghttp2_session_keep_idle_stream ) || ! CU_add_test ( pSuite , \"session_detach_idle_stream\" , test_nghttp2_session_detach_idle_stream ) || ! CU_add_test ( pSuite , \"session_large_dep_tree\" , test_nghttp2_session_large_dep_tree ) || ! CU_add_test ( pSuite , \"session_graceful_shutdown\" , test_nghttp2_session_graceful_shutdown ) || ! CU_add_test ( pSuite , \"session_on_header_temporal_failure\" , test_nghttp2_session_on_header_temporal_failure ) || ! CU_add_test ( pSuite , \"session_recv_client_magic\" , test_nghttp2_session_recv_client_magic ) || ! CU_add_test ( pSuite , \"session_delete_data_item\" , test_nghttp2_session_delete_data_item ) || ! CU_add_test ( pSuite , \"session_open_idle_stream\" , test_nghttp2_session_open_idle_stream ) || ! CU_add_test ( pSuite , \"session_cancel_reserved_remote\" , test_nghttp2_session_cancel_reserved_remote ) || ! CU_add_test ( pSuite , \"session_reset_pending_headers\" , test_nghttp2_session_reset_pending_headers ) || ! CU_add_test ( pSuite , \"session_send_data_callback\" , test_nghttp2_session_send_data_callback ) || ! CU_add_test ( pSuite , \"session_on_begin_headers_temporal_failure\" , test_nghttp2_session_on_begin_headers_temporal_failure ) || ! CU_add_test ( pSuite , \"session_defer_then_close\" , test_nghttp2_session_defer_then_close ) || ! CU_add_test ( pSuite , \"session_detach_item_from_closed_stream\" , test_nghttp2_session_detach_item_from_closed_stream ) || ! CU_add_test ( pSuite , \"session_flooding\" , test_nghttp2_session_flooding ) || ! CU_add_test ( pSuite , \"session_change_stream_priority\" , test_nghttp2_session_change_stream_priority ) || ! CU_add_test ( pSuite , \"session_create_idle_stream\" , test_nghttp2_session_create_idle_stream ) || ! CU_add_test ( pSuite , \"session_repeated_priority_change\" , test_nghttp2_session_repeated_priority_change ) || ! CU_add_test ( pSuite , \"session_repeated_priority_submission\" , test_nghttp2_session_repeated_priority_submission ) || ! CU_add_test ( pSuite , \"session_set_local_window_size\" , test_nghttp2_session_set_local_window_size ) || ! CU_add_test ( pSuite , \"session_cancel_from_before_frame_send\" , test_nghttp2_session_cancel_from_before_frame_send ) || <S2SV_StartBug> ! CU_add_test ( pSuite , \"session_removed_closed_stream\" , <S2SV_EndBug> test_nghttp2_session_removed_closed_stream ) || ! CU_add_test ( pSuite , \"session_pause_data\" , test_nghttp2_session_pause_data ) || ! CU_add_test ( pSuite , \"session_no_closed_streams\" , test_nghttp2_session_no_closed_streams ) || ! CU_add_test ( pSuite , \"session_set_stream_user_data\" , test_nghttp2_session_set_stream_user_data ) || ! CU_add_test ( pSuite , \"http_mandatory_headers\" , test_nghttp2_http_mandatory_headers ) || ! CU_add_test ( pSuite , \"http_content_length\" , test_nghttp2_http_content_length ) || ! CU_add_test ( pSuite , \"http_content_length_mismatch\" , test_nghttp2_http_content_length_mismatch ) || ! CU_add_test ( pSuite , \"http_non_final_response\" , test_nghttp2_http_non_final_response ) || ! CU_add_test ( pSuite , \"http_trailer_headers\" , test_nghttp2_http_trailer_headers ) || ! CU_add_test ( pSuite , \"http_ignore_regular_header\" , test_nghttp2_http_ignore_regular_header ) || ! CU_add_test ( pSuite , \"http_ignore_content_length\" , test_nghttp2_http_ignore_content_length ) || ! CU_add_test ( pSuite , \"http_record_request_method\" , test_nghttp2_http_record_request_method ) || ! CU_add_test ( pSuite , \"http_push_promise\" , test_nghttp2_http_push_promise ) || ! CU_add_test ( pSuite , \"http_head_method_upgrade_workaround\" , test_nghttp2_http_head_method_upgrade_workaround ) || ! CU_add_test ( pSuite , \"frame_pack_headers\" , test_nghttp2_frame_pack_headers ) || ! CU_add_test ( pSuite , \"frame_pack_headers_frame_too_large\" , test_nghttp2_frame_pack_headers_frame_too_large ) || ! CU_add_test ( pSuite , \"frame_pack_priority\" , test_nghttp2_frame_pack_priority ) || ! CU_add_test ( pSuite , \"frame_pack_rst_stream\" , test_nghttp2_frame_pack_rst_stream ) || ! CU_add_test ( pSuite , \"frame_pack_settings\" , test_nghttp2_frame_pack_settings ) || ! CU_add_test ( pSuite , \"frame_pack_push_promise\" , test_nghttp2_frame_pack_push_promise ) || ! CU_add_test ( pSuite , \"frame_pack_ping\" , test_nghttp2_frame_pack_ping ) || ! CU_add_test ( pSuite , \"frame_pack_goaway\" , test_nghttp2_frame_pack_goaway ) || ! CU_add_test ( pSuite , \"frame_pack_window_update\" , test_nghttp2_frame_pack_window_update ) || ! CU_add_test ( pSuite , \"frame_pack_altsvc\" , test_nghttp2_frame_pack_altsvc ) || ! CU_add_test ( pSuite , \"frame_pack_origin\" , test_nghttp2_frame_pack_origin ) || ! CU_add_test ( pSuite , \"nv_array_copy\" , test_nghttp2_nv_array_copy ) || ! CU_add_test ( pSuite , \"iv_check\" , test_nghttp2_iv_check ) || ! CU_add_test ( pSuite , \"hd_deflate\" , test_nghttp2_hd_deflate ) || ! CU_add_test ( pSuite , \"hd_deflate_same_indexed_repr\" , test_nghttp2_hd_deflate_same_indexed_repr ) || ! CU_add_test ( pSuite , \"hd_inflate_indexed\" , test_nghttp2_hd_inflate_indexed ) || ! CU_add_test ( pSuite , \"hd_inflate_indname_noinc\" , test_nghttp2_hd_inflate_indname_noinc ) || ! CU_add_test ( pSuite , \"hd_inflate_indname_inc\" , test_nghttp2_hd_inflate_indname_inc ) || ! CU_add_test ( pSuite , \"hd_inflate_indname_inc_eviction\" , test_nghttp2_hd_inflate_indname_inc_eviction ) || ! CU_add_test ( pSuite , \"hd_inflate_newname_noinc\" , test_nghttp2_hd_inflate_newname_noinc ) || ! CU_add_test ( pSuite , \"hd_inflate_newname_inc\" , test_nghttp2_hd_inflate_newname_inc ) || ! CU_add_test ( pSuite , \"hd_inflate_clearall_inc\" , test_nghttp2_hd_inflate_clearall_inc ) || ! CU_add_test ( pSuite , \"hd_inflate_zero_length_huffman\" , test_nghttp2_hd_inflate_zero_length_huffman ) || ! CU_add_test ( pSuite , \"hd_inflate_expect_table_size_update\" , test_nghttp2_hd_inflate_expect_table_size_update ) || ! CU_add_test ( pSuite , \"hd_inflate_unexpected_table_size_update\" , test_nghttp2_hd_inflate_unexpected_table_size_update ) || ! CU_add_test ( pSuite , \"hd_ringbuf_reserve\" , test_nghttp2_hd_ringbuf_reserve ) || ! CU_add_test ( pSuite , \"hd_change_table_size\" , test_nghttp2_hd_change_table_size ) || ! CU_add_test ( pSuite , \"hd_deflate_inflate\" , test_nghttp2_hd_deflate_inflate ) || ! CU_add_test ( pSuite , \"hd_no_index\" , test_nghttp2_hd_no_index ) || ! CU_add_test ( pSuite , \"hd_deflate_bound\" , test_nghttp2_hd_deflate_bound ) || ! CU_add_test ( pSuite , \"hd_public_api\" , test_nghttp2_hd_public_api ) || ! CU_add_test ( pSuite , \"hd_deflate_hd_vec\" , test_nghttp2_hd_deflate_hd_vec ) || ! CU_add_test ( pSuite , \"hd_decode_length\" , test_nghttp2_hd_decode_length ) || ! CU_add_test ( pSuite , \"hd_huff_encode\" , test_nghttp2_hd_huff_encode ) || ! CU_add_test ( pSuite , \"hd_huff_decode\" , test_nghttp2_hd_huff_decode ) || ! CU_add_test ( pSuite , \"adjust_local_window_size\" , test_nghttp2_adjust_local_window_size ) || ! CU_add_test ( pSuite , \"check_header_name\" , test_nghttp2_check_header_name ) || ! CU_add_test ( pSuite , \"check_header_value\" , test_nghttp2_check_header_value ) || ! CU_add_test ( pSuite , \"bufs_add\" , test_nghttp2_bufs_add ) || ! CU_add_test ( pSuite , \"bufs_add_stack_buffer_overflow_bug\" , test_nghttp2_bufs_add_stack_buffer_overflow_bug ) || ! CU_add_test ( pSuite , \"bufs_addb\" , test_nghttp2_bufs_addb ) || ! CU_add_test ( pSuite , \"bufs_orb\" , test_nghttp2_bufs_orb ) || ! CU_add_test ( pSuite , \"bufs_remove\" , test_nghttp2_bufs_remove ) || ! CU_add_test ( pSuite , \"bufs_reset\" , test_nghttp2_bufs_reset ) || ! CU_add_test ( pSuite , \"bufs_advance\" , test_nghttp2_bufs_advance ) || ! CU_add_test ( pSuite , \"bufs_next_present\" , test_nghttp2_bufs_next_present ) || ! CU_add_test ( pSuite , \"bufs_realloc\" , test_nghttp2_bufs_realloc ) ) { CU_cleanup_registry ( ) ; return ( int ) CU_get_error ( ) ; } CU_basic_set_mode ( CU_BRM_VERBOSE ) ; CU_basic_run_tests ( ) ; num_tests_failed = CU_get_number_of_tests_failed ( ) ; CU_cleanup_registry ( ) ; if ( CU_get_error ( ) == CUE_SUCCESS ) { return ( int ) num_tests_failed ; } else { printf ( \"CUnit<S2SV_blank>Error:<S2SV_blank>%s\\\\n\" , CU_get_error_msg ( ) ) ; return ( int ) CU_get_error ( ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( pSuite , \"session_too_many_settings\" , test_nghttp2_session_too_many_settings ) || ! CU_add_test ( pSuite ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13187\n\n```\nCWE-200 IHEVCD_ERROR_T ihevcd_parse_slice_header ( codec_t * ps_codec , nal_header_t * ps_nal ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; WORD32 value ; WORD32 i , j ; WORD32 sps_id ; pps_t * ps_pps ; sps_t * ps_sps ; slice_header_t * ps_slice_hdr ; WORD32 disable_deblocking_filter_flag ; bitstrm_t * ps_bitstrm = & ps_codec -> s_parse . s_bitstrm ; WORD32 idr_pic_flag ; WORD32 pps_id ; WORD32 first_slice_in_pic_flag ; WORD32 no_output_of_prior_pics_flag = 0 ; WORD8 i1_nal_unit_type = ps_nal -> i1_nal_unit_type ; WORD32 num_poc_total_curr = 0 ; <S2SV_StartBug> WORD32 slice_address ; <S2SV_EndBug> if ( ps_codec -> i4_slice_error == 1 ) return ret ; idr_pic_flag = ( NAL_IDR_W_LP == i1_nal_unit_type ) || ( NAL_IDR_N_LP == i1_nal_unit_type ) ; BITS_PARSE ( \"first_slice_in_pic_flag\" , first_slice_in_pic_flag , ps_bitstrm , 1 ) ; if ( ( NAL_BLA_W_LP <= i1_nal_unit_type ) && ( NAL_RSV_RAP_VCL23 >= i1_nal_unit_type ) ) { BITS_PARSE ( \"no_output_of_prior_pics_flag\" , no_output_of_prior_pics_flag , ps_bitstrm , 1 ) ; } UEV_PARSE ( \"pic_parameter_set_id\" , pps_id , ps_bitstrm ) ; pps_id = CLIP3 ( pps_id , 0 , MAX_PPS_CNT - 2 ) ; ps_pps = ps_codec -> s_parse . ps_pps_base + pps_id ; if ( 0 == ps_pps -> i1_pps_valid ) { pps_t * ps_pps_ref = ps_codec -> ps_pps_base ; while ( 0 == ps_pps_ref -> i1_pps_valid ) { ps_pps_ref ++ ; if ( ( ps_pps_ref - ps_codec -> ps_pps_base >= MAX_PPS_CNT - 1 ) ) return IHEVCD_INVALID_HEADER ; } ihevcd_copy_pps ( ps_codec , pps_id , ps_pps_ref -> i1_pps_id ) ; } sps_id = ps_pps -> i1_sps_id ; ps_sps = ps_codec -> s_parse . ps_sps_base + sps_id ; if ( ( 0 != ps_codec -> u4_pic_cnt || ps_codec -> i4_pic_present ) && first_slice_in_pic_flag ) { if ( ps_codec -> i4_pic_present ) { slice_header_t * ps_slice_hdr_next ; ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = 0 ; ps_slice_hdr_next -> i2_ctb_y = ps_codec -> s_parse . ps_sps -> i2_pic_ht_in_ctb ; return ret ; } else { ps_codec -> i4_slice_error = 0 ; } } if ( first_slice_in_pic_flag ) { ps_codec -> s_parse . i4_cur_slice_idx = 0 ; } else { if ( 0 == ps_codec -> i4_pic_present ) ps_codec -> s_parse . i4_cur_slice_idx = 1 ; } ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr_base + ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ; if ( ( ps_pps -> i1_dependent_slice_enabled_flag ) && ( ! first_slice_in_pic_flag ) ) { BITS_PARSE ( \"dependent_slice_flag\" , value , ps_bitstrm , 1 ) ; if ( value && ( ps_codec -> s_parse . i4_cur_slice_idx > 0 ) ) { ihevcd_copy_slice_hdr ( ps_codec , ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) , ( ( ps_codec -> s_parse . i4_cur_slice_idx - 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ) ; } ps_slice_hdr -> i1_dependent_slice_flag = value ; } else { ps_slice_hdr -> i1_dependent_slice_flag = 0 ; } ps_slice_hdr -> i1_nal_unit_type = i1_nal_unit_type ; ps_slice_hdr -> i1_pps_id = pps_id ; ps_slice_hdr -> i1_first_slice_in_pic_flag = first_slice_in_pic_flag ; ps_slice_hdr -> i1_no_output_of_prior_pics_flag = 1 ; if ( ( NAL_BLA_W_LP <= i1_nal_unit_type ) && ( NAL_RSV_RAP_VCL23 >= i1_nal_unit_type ) ) { ps_slice_hdr -> i1_no_output_of_prior_pics_flag = no_output_of_prior_pics_flag ; } ps_slice_hdr -> i1_pps_id = pps_id ; if ( ! ps_slice_hdr -> i1_first_slice_in_pic_flag ) { WORD32 num_bits ; num_bits = 32 - CLZ ( ps_sps -> i4_pic_size_in_ctb - 1 ) ; BITS_PARSE ( \"slice_address\" , value , ps_bitstrm , num_bits ) ; slice_address = value ; if ( value >= ps_sps -> i4_pic_size_in_ctb ) return IHEVCD_IGNORE_SLICE ; } else { slice_address = 0 ; } if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_slice_hdr -> i1_pic_output_flag = 1 ; ps_slice_hdr -> i4_pic_order_cnt_lsb = 0 ; ps_slice_hdr -> i1_num_long_term_sps = 0 ; ps_slice_hdr -> i1_num_long_term_pics = 0 ; for ( i = 0 ; i < ps_pps -> i1_num_extra_slice_header_bits ; i ++ ) { BITS_PARSE ( \"slice_reserved_undetermined_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; } UEV_PARSE ( \"slice_type\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_type = value ; if ( ( ps_slice_hdr -> i1_nal_unit_type >= NAL_BLA_W_LP ) && ( ps_slice_hdr -> i1_nal_unit_type <= NAL_RSV_RAP_VCL23 ) ) ps_slice_hdr -> i1_slice_type = ISLICE ; if ( ( ps_slice_hdr -> i1_slice_type < 0 ) || ( ps_slice_hdr -> i1_slice_type > 2 ) ) return IHEVCD_IGNORE_SLICE ; if ( ps_pps -> i1_output_flag_present_flag ) { BITS_PARSE ( \"pic_output_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_pic_output_flag = value ; } ps_slice_hdr -> i1_colour_plane_id = 0 ; if ( 1 == ps_sps -> i1_separate_colour_plane_flag ) { BITS_PARSE ( \"colour_plane_id\" , value , ps_bitstrm , 2 ) ; ps_slice_hdr -> i1_colour_plane_id = value ; } ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag = 0 ; if ( ! idr_pic_flag ) { WORD32 st_rps_idx ; WORD32 num_neg_pics ; WORD32 num_pos_pics ; WORD8 * pi1_used ; BITS_PARSE ( \"pic_order_cnt_lsb\" , value , ps_bitstrm , ps_sps -> i1_log2_max_pic_order_cnt_lsb ) ; ps_slice_hdr -> i4_pic_order_cnt_lsb = value ; BITS_PARSE ( \"short_term_ref_pic_set_sps_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_short_term_ref_pic_set_sps_flag = value ; if ( 1 == ps_slice_hdr -> i1_short_term_ref_pic_set_sps_flag ) { WORD32 numbits ; ps_slice_hdr -> i1_short_term_ref_pic_set_idx = 0 ; if ( ps_sps -> i1_num_short_term_ref_pic_sets > 1 ) { numbits = 32 - CLZ ( ps_sps -> i1_num_short_term_ref_pic_sets - 1 ) ; BITS_PARSE ( \"short_term_ref_pic_set_idx\" , value , ps_bitstrm , numbits ) ; ps_slice_hdr -> i1_short_term_ref_pic_set_idx = value ; } st_rps_idx = ps_slice_hdr -> i1_short_term_ref_pic_set_idx ; num_neg_pics = ps_sps -> as_stref_picset [ st_rps_idx ] . i1_num_neg_pics ; num_pos_pics = ps_sps -> as_stref_picset [ st_rps_idx ] . i1_num_pos_pics ; pi1_used = ps_sps -> as_stref_picset [ st_rps_idx ] . ai1_used ; } else { ihevcd_short_term_ref_pic_set ( ps_bitstrm , & ps_sps -> as_stref_picset [ 0 ] , ps_sps -> i1_num_short_term_ref_pic_sets , ps_sps -> i1_num_short_term_ref_pic_sets , & ps_slice_hdr -> s_stref_picset ) ; st_rps_idx = ps_sps -> i1_num_short_term_ref_pic_sets ; num_neg_pics = ps_slice_hdr -> s_stref_picset . i1_num_neg_pics ; num_pos_pics = ps_slice_hdr -> s_stref_picset . i1_num_pos_pics ; pi1_used = ps_slice_hdr -> s_stref_picset . ai1_used ; } if ( ps_sps -> i1_long_term_ref_pics_present_flag ) { if ( ps_sps -> i1_num_long_term_ref_pics_sps > 0 ) { UEV_PARSE ( \"num_long_term_sps\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_long_term_sps = value ; ps_slice_hdr -> i1_num_long_term_sps = CLIP3 ( ps_slice_hdr -> i1_num_long_term_sps , 0 , MAX_DPB_SIZE - num_neg_pics - num_pos_pics ) ; } UEV_PARSE ( \"num_long_term_pics\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_long_term_pics = value ; ps_slice_hdr -> i1_num_long_term_pics = CLIP3 ( ps_slice_hdr -> i1_num_long_term_pics , 0 , MAX_DPB_SIZE - num_neg_pics - num_pos_pics - ps_slice_hdr -> i1_num_long_term_sps ) ; for ( i = 0 ; i < ( ps_slice_hdr -> i1_num_long_term_sps + ps_slice_hdr -> i1_num_long_term_pics ) ; i ++ ) { if ( i < ps_slice_hdr -> i1_num_long_term_sps ) { if ( ps_sps -> i1_num_long_term_ref_pics_sps > 1 ) { WORD32 num_bits = 32 - CLZ ( ps_sps -> i1_num_long_term_ref_pics_sps - 1 ) ; BITS_PARSE ( \"lt_idx_sps[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , num_bits ) ; } else { value = 0 ; } ps_slice_hdr -> ai4_poc_lsb_lt [ i ] = ps_sps -> au2_lt_ref_pic_poc_lsb_sps [ value ] ; ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] = ps_sps -> ai1_used_by_curr_pic_lt_sps_flag [ value ] ; } else { BITS_PARSE ( \"poc_lsb_lt[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , ps_sps -> i1_log2_max_pic_order_cnt_lsb ) ; ps_slice_hdr -> ai4_poc_lsb_lt [ i ] = value ; BITS_PARSE ( \"used_by_curr_pic_lt_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] = value ; } BITS_PARSE ( \"delta_poc_msb_present_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> ai1_delta_poc_msb_present_flag [ i ] = value ; ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] = 0 ; if ( ps_slice_hdr -> ai1_delta_poc_msb_present_flag [ i ] ) { UEV_PARSE ( \"delata_poc_msb_cycle_lt[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm ) ; ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] = value ; } if ( ( i != 0 ) && ( i != ps_slice_hdr -> i1_num_long_term_sps ) ) { ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] += ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i - 1 ] ; } } } for ( i = 0 ; i < num_neg_pics + num_pos_pics ; i ++ ) { if ( pi1_used [ i ] ) { num_poc_total_curr ++ ; } } for ( i = 0 ; i < ps_slice_hdr -> i1_num_long_term_sps + ps_slice_hdr -> i1_num_long_term_pics ; i ++ ) { if ( ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] ) { num_poc_total_curr ++ ; } } if ( ps_sps -> i1_sps_temporal_mvp_enable_flag ) { BITS_PARSE ( \"enable_temporal_mvp_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag = value ; } } ps_slice_hdr -> i1_slice_sao_luma_flag = 0 ; ps_slice_hdr -> i1_slice_sao_chroma_flag = 0 ; if ( ps_sps -> i1_sample_adaptive_offset_enabled_flag ) { BITS_PARSE ( \"slice_sao_luma_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_sao_luma_flag = value ; BITS_PARSE ( \"slice_sao_chroma_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_sao_chroma_flag = value ; } ps_slice_hdr -> i1_max_num_merge_cand = 1 ; ps_slice_hdr -> i1_cabac_init_flag = 0 ; ps_slice_hdr -> i1_num_ref_idx_l0_active = 0 ; ps_slice_hdr -> i1_num_ref_idx_l1_active = 0 ; ps_slice_hdr -> i1_slice_cb_qp_offset = 0 ; ps_slice_hdr -> i1_slice_cr_qp_offset = 0 ; if ( ( PSLICE == ps_slice_hdr -> i1_slice_type ) || ( BSLICE == ps_slice_hdr -> i1_slice_type ) ) { BITS_PARSE ( \"num_ref_idx_active_override_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_num_ref_idx_active_override_flag = value ; if ( ps_slice_hdr -> i1_num_ref_idx_active_override_flag ) { UEV_PARSE ( \"num_ref_idx_l0_active_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_ref_idx_l0_active = value + 1 ; if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { UEV_PARSE ( \"num_ref_idx_l1_active_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_ref_idx_l1_active = value + 1 ; } } else { ps_slice_hdr -> i1_num_ref_idx_l0_active = ps_pps -> i1_num_ref_idx_l0_default_active ; if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { ps_slice_hdr -> i1_num_ref_idx_l1_active = ps_pps -> i1_num_ref_idx_l1_default_active ; } } ps_slice_hdr -> i1_num_ref_idx_l0_active = CLIP3 ( ps_slice_hdr -> i1_num_ref_idx_l0_active , 0 , MAX_DPB_SIZE - 1 ) ; ps_slice_hdr -> i1_num_ref_idx_l1_active = CLIP3 ( ps_slice_hdr -> i1_num_ref_idx_l1_active , 0 , MAX_DPB_SIZE - 1 ) ; if ( 0 == num_poc_total_curr ) return IHEVCD_IGNORE_SLICE ; if ( ( ps_pps -> i1_lists_modification_present_flag ) && ( num_poc_total_curr > 1 ) ) { ihevcd_ref_pic_list_modification ( ps_bitstrm , ps_slice_hdr , num_poc_total_curr ) ; } else { ps_slice_hdr -> s_rplm . i1_ref_pic_list_modification_flag_l0 = 0 ; ps_slice_hdr -> s_rplm . i1_ref_pic_list_modification_flag_l1 = 0 ; } if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { BITS_PARSE ( \"mvd_l1_zero_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_mvd_l1_zero_flag = value ; } ps_slice_hdr -> i1_cabac_init_flag = 0 ; if ( ps_pps -> i1_cabac_init_present_flag ) { BITS_PARSE ( \"cabac_init_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_cabac_init_flag = value ; } ps_slice_hdr -> i1_collocated_from_l0_flag = 1 ; ps_slice_hdr -> i1_collocated_ref_idx = 0 ; if ( ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag ) { if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { BITS_PARSE ( \"collocated_from_l0_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_collocated_from_l0_flag = value ; } if ( ( ps_slice_hdr -> i1_collocated_from_l0_flag && ( ps_slice_hdr -> i1_num_ref_idx_l0_active > 1 ) ) || ( ! ps_slice_hdr -> i1_collocated_from_l0_flag && ( ps_slice_hdr -> i1_num_ref_idx_l1_active > 1 ) ) ) { UEV_PARSE ( \"collocated_ref_idx\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_collocated_ref_idx = value ; } } ps_slice_hdr -> i1_collocated_ref_idx = CLIP3 ( ps_slice_hdr -> i1_collocated_ref_idx , 0 , MAX_DPB_SIZE - 1 ) ; if ( ( ps_pps -> i1_weighted_pred_flag && ( PSLICE == ps_slice_hdr -> i1_slice_type ) ) || ( ps_pps -> i1_weighted_bipred_flag && ( BSLICE == ps_slice_hdr -> i1_slice_type ) ) ) { ihevcd_parse_pred_wt_ofst ( ps_bitstrm , ps_sps , ps_pps , ps_slice_hdr ) ; } UEV_PARSE ( \"five_minus_max_num_merge_cand\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_max_num_merge_cand = 5 - value ; } ps_slice_hdr -> i1_max_num_merge_cand = CLIP3 ( ps_slice_hdr -> i1_max_num_merge_cand , 1 , 5 ) ; SEV_PARSE ( \"slice_qp_delta\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_qp_delta = value ; if ( ps_pps -> i1_pic_slice_level_chroma_qp_offsets_present_flag ) { SEV_PARSE ( \"slice_cb_qp_offset\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_cb_qp_offset = value ; SEV_PARSE ( \"slice_cr_qp_offset\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_cr_qp_offset = value ; } ps_slice_hdr -> i1_deblocking_filter_override_flag = 0 ; ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag = ps_pps -> i1_pic_disable_deblocking_filter_flag ; ps_slice_hdr -> i1_beta_offset_div2 = ps_pps -> i1_beta_offset_div2 ; ps_slice_hdr -> i1_tc_offset_div2 = ps_pps -> i1_tc_offset_div2 ; disable_deblocking_filter_flag = ps_pps -> i1_pic_disable_deblocking_filter_flag ; if ( ps_pps -> i1_deblocking_filter_control_present_flag ) { if ( ps_pps -> i1_deblocking_filter_override_enabled_flag ) { BITS_PARSE ( \"deblocking_filter_override_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_deblocking_filter_override_flag = value ; } if ( ps_slice_hdr -> i1_deblocking_filter_override_flag ) { BITS_PARSE ( \"slice_disable_deblocking_filter_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag = value ; disable_deblocking_filter_flag = ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ; if ( ! ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ) { SEV_PARSE ( \"beta_offset_div2\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_beta_offset_div2 = value ; SEV_PARSE ( \"tc_offset_div2\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_tc_offset_div2 = value ; } } } ps_slice_hdr -> i1_slice_loop_filter_across_slices_enabled_flag = ps_pps -> i1_loop_filter_across_slices_enabled_flag ; if ( ps_pps -> i1_loop_filter_across_slices_enabled_flag && ( ps_slice_hdr -> i1_slice_sao_luma_flag || ps_slice_hdr -> i1_slice_sao_chroma_flag || ! disable_deblocking_filter_flag ) ) { BITS_PARSE ( \"slice_loop_filter_across_slices_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_loop_filter_across_slices_enabled_flag = value ; } } if ( ( ! first_slice_in_pic_flag ) && ( ps_codec -> i4_pic_present ) ) { slice_header_t * ps_slice_hdr_base = ps_codec -> ps_slice_hdr_base ; if ( ( ps_slice_hdr_base -> i1_pps_id != ps_slice_hdr -> i1_pps_id ) || ( ps_slice_hdr_base -> i4_pic_order_cnt_lsb != ps_slice_hdr -> i4_pic_order_cnt_lsb ) ) { return IHEVCD_IGNORE_SLICE ; } } if ( 0 == ps_codec -> i4_pic_present ) { ps_slice_hdr -> i4_abs_pic_order_cnt = ihevcd_calc_poc ( ps_codec , ps_nal , ps_sps -> i1_log2_max_pic_order_cnt_lsb , ps_slice_hdr -> i4_pic_order_cnt_lsb ) ; } else { ps_slice_hdr -> i4_abs_pic_order_cnt = ps_codec -> s_parse . i4_abs_pic_order_cnt ; } if ( ! first_slice_in_pic_flag ) { if ( ps_codec -> s_parse . i4_abs_pic_order_cnt == ps_slice_hdr -> i4_abs_pic_order_cnt ) { if ( slice_address > ps_codec -> s_parse . i4_next_ctb_indx ) { if ( ps_codec -> i4_pic_present ) { <S2SV_StartBug> slice_header_t * ps_slice_hdr_next ; <S2SV_EndBug> ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = slice_address % ps_sps -> i2_pic_wd_in_ctb ; ps_slice_hdr_next -> i2_ctb_y = slice_address / ps_sps -> i2_pic_wd_in_ctb ; return ret ; } else { return IHEVCD_IGNORE_SLICE ; } } else if ( slice_address < ps_codec -> s_parse . i4_next_ctb_indx ) { return IHEVCD_IGNORE_SLICE ; } else { ps_codec -> i4_slice_error = 0 ; } } else { if ( ps_codec -> i4_pic_present ) { slice_header_t * ps_slice_hdr_next ; ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = 0 ; ps_slice_hdr_next -> i2_ctb_y = ps_codec -> s_parse . ps_sps -> i2_pic_ht_in_ctb ; return ret ; } else { if ( ps_slice_hdr -> i1_dependent_slice_flag ) return IHEVCD_IGNORE_SLICE ; ps_codec -> s_parse . i4_abs_pic_order_cnt = ps_slice_hdr -> i4_abs_pic_order_cnt ; } } } else { if ( ps_codec -> s_parse . i4_abs_pic_order_cnt == ps_slice_hdr -> i4_abs_pic_order_cnt ) return IHEVCD_IGNORE_SLICE ; ps_codec -> s_parse . i4_abs_pic_order_cnt = ps_slice_hdr -> i4_abs_pic_order_cnt ; } ps_slice_hdr -> i4_num_entry_point_offsets = 0 ; if ( ( ps_pps -> i1_tiles_enabled_flag ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag ) ) { UEV_PARSE ( \"num_entry_point_offsets\" , value , ps_bitstrm ) ; ps_slice_hdr -> i4_num_entry_point_offsets = value ; { WORD32 max_num_entry_point_offsets ; if ( ( ps_pps -> i1_tiles_enabled_flag ) && ( ps_pps -> i1_entropy_coding_sync_enabled_flag ) ) { max_num_entry_point_offsets = ps_pps -> i1_num_tile_columns * ( ps_sps -> i2_pic_ht_in_ctb - 1 ) ; } else if ( ps_pps -> i1_tiles_enabled_flag ) { max_num_entry_point_offsets = ps_pps -> i1_num_tile_columns * ps_pps -> i1_num_tile_rows ; } else { max_num_entry_point_offsets = ( ps_sps -> i2_pic_ht_in_ctb - 1 ) ; } ps_slice_hdr -> i4_num_entry_point_offsets = CLIP3 ( ps_slice_hdr -> i4_num_entry_point_offsets , 0 , max_num_entry_point_offsets ) ; } if ( ps_slice_hdr -> i4_num_entry_point_offsets > 0 ) { UEV_PARSE ( \"offset_len_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_offset_len = value + 1 ; for ( i = 0 ; i < ps_slice_hdr -> i4_num_entry_point_offsets ; i ++ ) { BITS_PARSE ( \"entry_point_offset\" , value , ps_bitstrm , ps_slice_hdr -> i1_offset_len ) ; } } } if ( ps_pps -> i1_slice_header_extension_present_flag ) { UEV_PARSE ( \"slice_header_extension_length\" , value , ps_bitstrm ) ; ps_slice_hdr -> i2_slice_header_extension_length = value ; for ( i = 0 ; i < ps_slice_hdr -> i2_slice_header_extension_length ; i ++ ) { BITS_PARSE ( \"slice_header_extension_data_byte\" , value , ps_bitstrm , 8 ) ; } } ihevcd_bits_flush_to_byte_boundary ( ps_bitstrm ) ; if ( ( UWORD8 * ) ps_bitstrm -> pu4_buf > ps_bitstrm -> pu1_buf_max ) return IHEVCD_INVALID_PARAMETER ; { dpb_mgr_t * ps_dpb_mgr = ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr ; WORD32 r_idx ; if ( ( NAL_IDR_W_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_IDR_N_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_N_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_W_DLP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_W_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( 0 == ps_codec -> u4_pic_cnt ) ) { for ( i = 0 ; i < MAX_DPB_BUFS ; i ++ ) { if ( ps_dpb_mgr -> as_dpb_info [ i ] . ps_pic_buf ) { pic_buf_t * ps_pic_buf = ps_dpb_mgr -> as_dpb_info [ i ] . ps_pic_buf ; mv_buf_t * ps_mv_buf ; ihevc_dpb_mgr_del_ref ( ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr , ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_pic_buf -> i4_abs_poc ) ; ps_mv_buf = ( mv_buf_t * ) ps_codec -> ps_mv_buf ; for ( j = 0 ; j < ps_codec -> i4_max_dpb_size ; j ++ ) { if ( ps_mv_buf && ps_mv_buf -> i4_abs_poc == ps_pic_buf -> i4_abs_poc ) { ihevc_buf_mgr_release ( ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr , j , BUF_MGR_REF ) ; break ; } ps_mv_buf ++ ; } } } for ( r_idx = 0 ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = NULL ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = NULL ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = NULL ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = NULL ; } } else { ret = ihevcd_ref_list ( ps_codec , ps_pps , ps_sps , ps_slice_hdr ) ; if ( ( WORD32 ) IHEVCD_SUCCESS != ret ) { return ret ; } } } if ( ps_codec -> i4_pic_present ) { pic_buf_t * ps_pic_buf_ref ; mv_buf_t * ps_mv_buf_ref ; WORD32 r_idx ; dpb_mgr_t * ps_dpb_mgr = ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr ; buf_mgr_t * ps_mv_buf_mgr = ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr ; ps_pic_buf_ref = ihevc_dpb_mgr_get_ref_by_nearest_poc ( ps_dpb_mgr , ps_slice_hdr -> i4_abs_pic_order_cnt ) ; if ( NULL == ps_pic_buf_ref ) { ps_pic_buf_ref = ps_codec -> as_process [ 0 ] . ps_cur_pic ; ps_mv_buf_ref = ps_codec -> s_parse . ps_cur_mv_buf ; } else { ps_mv_buf_ref = ihevcd_mv_mgr_get_poc ( ps_mv_buf_mgr , ps_pic_buf_ref -> i4_abs_poc ) ; } for ( r_idx = 0 ; r_idx < ps_slice_hdr -> i1_num_ref_idx_l0_active ; r_idx ++ ) { if ( NULL == ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } for ( r_idx = ps_slice_hdr -> i1_num_ref_idx_l0_active ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } for ( r_idx = 0 ; r_idx < ps_slice_hdr -> i1_num_ref_idx_l1_active ; r_idx ++ ) { if ( NULL == ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf ) { ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } for ( r_idx = ps_slice_hdr -> i1_num_ref_idx_l1_active ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } if ( ! ps_slice_hdr -> i1_first_slice_in_pic_flag ) { ps_slice_hdr -> i2_ctb_x = slice_address % ps_sps -> i2_pic_wd_in_ctb ; ps_slice_hdr -> i2_ctb_y = slice_address / ps_sps -> i2_pic_wd_in_ctb ; if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_slice_hdr -> i2_independent_ctb_x = ps_slice_hdr -> i2_ctb_x ; ps_slice_hdr -> i2_independent_ctb_y = ps_slice_hdr -> i2_ctb_y ; } } else { ps_slice_hdr -> i2_ctb_x = 0 ; ps_slice_hdr -> i2_ctb_y = 0 ; ps_slice_hdr -> i2_independent_ctb_x = 0 ; ps_slice_hdr -> i2_independent_ctb_y = 0 ; } if ( ( ! first_slice_in_pic_flag ) && ( 0 == ps_codec -> i4_pic_present ) ) { slice_header_t * ps_slice_hdr_prev = ps_codec -> s_parse . ps_slice_hdr_base ; ihevcd_copy_slice_hdr ( ps_codec , 0 , ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ) ; <S2SV_StartBug> ps_codec -> i4_slice_error = 1 ; <S2SV_EndBug> ps_slice_hdr_prev -> i2_ctb_x = 0 ; ps_slice_hdr_prev -> i2_ctb_y = 0 ; ps_codec -> s_parse . i4_ctb_x = 0 ; ps_codec -> s_parse . i4_ctb_y = 0 ; ps_codec -> s_parse . i4_cur_slice_idx = 0 ; if ( ( ps_slice_hdr -> i2_ctb_x == 0 ) && ( ps_slice_hdr -> i2_ctb_y == 0 ) ) { ps_slice_hdr -> i2_ctb_x ++ ; } } { if ( ( i1_nal_unit_type < NAL_BLA_W_LP ) && ( i1_nal_unit_type % 2 == 0 ) ) { if ( IVD_SKIP_B == ps_codec -> e_pic_skip_mode ) return IHEVCD_IGNORE_SLICE ; } if ( ( IVD_SKIP_PB == ps_codec -> e_pic_skip_mode ) && ( ISLICE != ps_slice_hdr -> i1_slice_type ) ) { return IHEVCD_IGNORE_SLICE ; } } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; WORD32 slice_address ; WORD32 prev_slice_incomplete_flag = 0 <S2SV_ModStart> i4_pic_present ) { prev_slice_incomplete_flag = 1 <S2SV_ModEnd> ; } else <S2SV_ModStart> ) ) ; prev_slice_incomplete_flag = 1 ; ASSERT ( ps_codec -> s_parse . i4_cur_slice_idx == 1 ) <S2SV_ModEnd> ; ps_slice_hdr_prev -> <S2SV_ModStart> ; } } if ( prev_slice_incomplete_flag ) { ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20915\n\n```\nCWE-125 void bit_write_MC ( Bit_Chain * dat , BITCODE_MC val ) { int i , j ; int negative = 0 ; unsigned char byte [ 5 ] ; BITCODE_UMC mask = 0x0000007f ; BITCODE_UMC value = ( BITCODE_UMC ) val ; if ( val < 0 ) { negative = 1 ; value = ( BITCODE_UMC ) - val ; } for ( i = 4 , j = 0 ; i >= 0 ; i -- , j += 7 ) { byte [ i ] = ( unsigned char ) ( ( value & mask ) >> j ) ; byte [ i ] |= 0x80 ; mask = mask << 7 ; } for ( i = 0 ; i < 4 ; i ++ ) if ( byte [ i ] & 0x7f ) break ; <S2SV_StartBug> if ( byte [ i ] & 0x40 ) <S2SV_EndBug> i -- ; byte [ i ] &= 0x7f ; if ( negative ) byte [ i ] |= 0x40 ; for ( j = 4 ; j >= i ; j -- ) bit_write_RC ( dat , byte [ j ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] & 0x40 && i > 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7021\n\n```\nCWE-399 static int filter_frame ( AVFilterLink * inlink , AVFrame * buf ) { AVFilterContext * ctx = inlink -> dst ; FPSContext * s = ctx -> priv ; AVFilterLink * outlink = ctx -> outputs [ 0 ] ; int64_t delta ; int i , ret ; s -> frames_in ++ ; if ( s -> pts == AV_NOPTS_VALUE ) { if ( buf -> pts != AV_NOPTS_VALUE ) { ret = write_to_fifo ( s -> fifo , buf ) ; if ( ret < 0 ) return ret ; if ( s -> start_time != DBL_MAX && s -> start_time != AV_NOPTS_VALUE ) { double first_pts = s -> start_time * AV_TIME_BASE ; first_pts = FFMIN ( FFMAX ( first_pts , INT64_MIN ) , INT64_MAX ) ; s -> first_pts = s -> pts = av_rescale_q ( first_pts , AV_TIME_BASE_Q , inlink -> time_base ) ; av_log ( ctx , AV_LOG_VERBOSE , \"Set<S2SV_blank>first<S2SV_blank>pts<S2SV_blank>to<S2SV_blank>(in:%\" PRId64 \"<S2SV_blank>out:%\" PRId64 \")\\\\n\" , s -> first_pts , av_rescale_q ( first_pts , AV_TIME_BASE_Q , outlink -> time_base ) ) ; } else { s -> first_pts = s -> pts = buf -> pts ; } } else { av_log ( ctx , AV_LOG_WARNING , \"Discarding<S2SV_blank>initial<S2SV_blank>frame(s)<S2SV_blank>with<S2SV_blank>no<S2SV_blank>\" \"timestamp.\\\\n\" ) ; av_frame_free ( & buf ) ; s -> drop ++ ; } return 0 ; } <S2SV_StartBug> if ( buf -> pts == AV_NOPTS_VALUE ) { <S2SV_EndBug> return write_to_fifo ( s -> fifo , buf ) ; } delta = av_rescale_q_rnd ( buf -> pts - s -> pts , inlink -> time_base , outlink -> time_base , s -> rounding ) ; if ( delta < 1 ) { AVFrame * tmp ; int drop = av_fifo_size ( s -> fifo ) / sizeof ( AVFrame * ) ; av_log ( ctx , AV_LOG_DEBUG , \"Dropping<S2SV_blank>%d<S2SV_blank>frame(s).\\\\n\" , drop ) ; s -> drop += drop ; av_fifo_generic_read ( s -> fifo , & tmp , sizeof ( tmp ) , NULL ) ; flush_fifo ( s -> fifo ) ; ret = write_to_fifo ( s -> fifo , tmp ) ; av_frame_free ( & buf ) ; return ret ; } for ( i = 0 ; i < delta ; i ++ ) { AVFrame * buf_out ; av_fifo_generic_read ( s -> fifo , & buf_out , sizeof ( buf_out ) , NULL ) ; if ( ! av_fifo_size ( s -> fifo ) && i < delta - 1 ) { AVFrame * dup = av_frame_clone ( buf_out ) ; av_log ( ctx , AV_LOG_DEBUG , \"Duplicating<S2SV_blank>frame.\\\\n\" ) ; if ( dup ) ret = write_to_fifo ( s -> fifo , dup ) ; else ret = AVERROR ( ENOMEM ) ; if ( ret < 0 ) { av_frame_free ( & buf_out ) ; av_frame_free ( & buf ) ; return ret ; } s -> dup ++ ; } buf_out -> pts = av_rescale_q ( s -> first_pts , inlink -> time_base , outlink -> time_base ) + s -> frames_out ; if ( ( ret = ff_filter_frame ( outlink , buf_out ) ) < 0 ) { av_frame_free ( & buf ) ; return ret ; } s -> frames_out ++ ; } flush_fifo ( s -> fifo ) ; ret = write_to_fifo ( s -> fifo , buf ) ; s -> pts = s -> first_pts + av_rescale_q ( s -> frames_out , outlink -> time_base , inlink -> time_base ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pts == AV_NOPTS_VALUE || av_fifo_size ( s -> fifo ) <= 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15121\n\n```\nCWE-78 int r_bin_pdb_download ( RCore * core , int isradjson , int * actions_done , SPDBOptions * options ) { int ret ; SPDBDownloaderOpt opt ; SPDBDownloader pdb_downloader ; RBinInfo * info = r_bin_get_info ( core -> bin ) ; if ( ! info || ! info -> debug_file_name ) { <S2SV_StartBug> eprintf ( \"Can\\'t<S2SV_blank>find<S2SV_blank>debug<S2SV_blank>filename\\\\n\" ) ; <S2SV_EndBug> return 1 ; } if ( ! options || ! options -> symbol_server || ! options -> user_agent ) { eprintf ( \"Can\\'t<S2SV_blank>retrieve<S2SV_blank>pdb<S2SV_blank>configurations\\\\n\" ) ; return 1 ; } opt . dbg_file = ( char * ) r_file_basename ( info -> debug_file_name ) ; opt . guid = info -> guid ; opt . symbol_server = options -> symbol_server ; opt . user_agent = options -> user_agent ; opt . symbol_store_path = options -> symbol_store_path ; opt . extract = options -> extract ; init_pdb_downloader ( & opt , & pdb_downloader ) ; ret = pdb_downloader . download ? pdb_downloader . download ( & pdb_downloader ) : 0 ; if ( isradjson && actions_done ) { printf ( \"%s\\\\\"pdb\\\\\":{\\\\\"file\\\\\":\\\\\"%s\\\\\",\\\\\"download\\\\\":%s}\" , * actions_done ? \",\" : \"\" , opt . dbg_file , ret ? \"true\" : \"false\" ) ; } else { printf ( \"PDB<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>download<S2SV_blank>%s\\\\n\" , opt . dbg_file , ret ? \"success\" : \"failed\" ) ; } if ( actions_done ) { ( * actions_done ) ++ ; } deinit_pdb_downloader ( & pdb_downloader ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> eprintf ( \"Can\\'t<S2SV_blank>find<S2SV_blank>debug<S2SV_blank>filename\\\\n\" ) ; return 1 ; } if ( ! is_valid_guid ( info -> guid ) ) { eprintf ( \"Invalid<S2SV_blank>GUID<S2SV_blank>for<S2SV_blank>file\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 int rxrpc_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct rxrpc_skb_priv * sp ; struct rxrpc_call * call = NULL , * continue_call = NULL ; struct rxrpc_sock * rx = rxrpc_sk ( sock -> sk ) ; struct sk_buff * skb ; long timeo ; int copy , ret , ullen , offset , copied = 0 ; u32 abort_code ; DEFINE_WAIT ( wait ) ; _enter ( \",,,%zu,%d\" , len , flags ) ; if ( flags & ( MSG_OOB | MSG_TRUNC ) ) return - EOPNOTSUPP ; ullen = msg -> msg_flags & MSG_CMSG_COMPAT ? 4 : sizeof ( unsigned long ) ; timeo = sock_rcvtimeo ( & rx -> sk , flags & MSG_DONTWAIT ) ; msg -> msg_flags |= MSG_MORE ; lock_sock ( & rx -> sk ) ; for ( ; ; ) { if ( RB_EMPTY_ROOT ( & rx -> calls ) ) { if ( copied ) goto out ; if ( rx -> sk . sk_state != RXRPC_SERVER_LISTENING ) { release_sock ( & rx -> sk ) ; if ( continue_call ) rxrpc_put_call ( continue_call ) ; return - ENODATA ; } } skb = skb_peek ( & rx -> sk . sk_receive_queue ) ; if ( ! skb ) { if ( copied && ( msg -> msg_flags & MSG_PEEK || timeo == 0 ) ) goto out ; release_sock ( & rx -> sk ) ; prepare_to_wait_exclusive ( sk_sleep ( & rx -> sk ) , & wait , TASK_INTERRUPTIBLE ) ; ret = sock_error ( & rx -> sk ) ; if ( ret ) goto wait_error ; if ( skb_queue_empty ( & rx -> sk . sk_receive_queue ) ) { if ( signal_pending ( current ) ) goto wait_interrupted ; timeo = schedule_timeout ( timeo ) ; } finish_wait ( sk_sleep ( & rx -> sk ) , & wait ) ; lock_sock ( & rx -> sk ) ; continue ; } peek_next_packet : sp = rxrpc_skb ( skb ) ; call = sp -> call ; ASSERT ( call != NULL ) ; _debug ( \"next<S2SV_blank>pkt<S2SV_blank>%s\" , rxrpc_pkts [ sp -> hdr . type ] ) ; spin_lock_bh ( & call -> lock ) ; spin_unlock_bh ( & call -> lock ) ; if ( test_bit ( RXRPC_CALL_RELEASED , & call -> flags ) ) { _debug ( \"packet<S2SV_blank>from<S2SV_blank>released<S2SV_blank>call\" ) ; if ( skb_dequeue ( & rx -> sk . sk_receive_queue ) != skb ) BUG ( ) ; rxrpc_free_skb ( skb ) ; continue ; } if ( continue_call ) { _debug ( \"maybe<S2SV_blank>cont\" ) ; if ( call != continue_call || skb -> mark != RXRPC_SKB_MARK_DATA ) { release_sock ( & rx -> sk ) ; rxrpc_put_call ( continue_call ) ; _leave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[noncont]\" , copied ) ; return copied ; } } rxrpc_get_call ( call ) ; if ( ! continue_call ) { <S2SV_StartBug> if ( msg -> msg_name && msg -> msg_namelen > 0 ) <S2SV_EndBug> memcpy ( msg -> msg_name , & call -> conn -> trans -> peer -> srx , sizeof ( call -> conn -> trans -> peer -> srx ) ) ; sock_recv_ts_and_drops ( msg , & rx -> sk , skb ) ; } if ( skb -> mark != RXRPC_SKB_MARK_DATA ) goto receive_non_data_message ; _debug ( \"recvmsg<S2SV_blank>DATA<S2SV_blank>#%u<S2SV_blank>{<S2SV_blank>%d,<S2SV_blank>%d<S2SV_blank>}\" , ntohl ( sp -> hdr . seq ) , skb -> len , sp -> offset ) ; if ( ! continue_call ) { ret = put_cmsg ( msg , SOL_RXRPC , RXRPC_USER_CALL_ID , ullen , & call -> user_call_ID ) ; if ( ret < 0 ) goto copy_error ; ASSERT ( test_bit ( RXRPC_CALL_HAS_USERID , & call -> flags ) ) ; } ASSERTCMP ( ntohl ( sp -> hdr . seq ) , >= , call -> rx_data_recv ) ; ASSERTCMP ( ntohl ( sp -> hdr . seq ) , <= , call -> rx_data_recv + 1 ) ; call -> rx_data_recv = ntohl ( sp -> hdr . seq ) ; ASSERTCMP ( ntohl ( sp -> hdr . seq ) , > , call -> rx_data_eaten ) ; offset = sp -> offset ; copy = skb -> len - offset ; if ( copy > len - copied ) copy = len - copied ; if ( skb -> ip_summed == CHECKSUM_UNNECESSARY ) { ret = skb_copy_datagram_iovec ( skb , offset , msg -> msg_iov , copy ) ; } else { ret = skb_copy_and_csum_datagram_iovec ( skb , offset , msg -> msg_iov ) ; if ( ret == - EINVAL ) goto csum_copy_error ; } if ( ret < 0 ) goto copy_error ; _debug ( \"copied<S2SV_blank>%d+%d\" , copy , copied ) ; offset += copy ; copied += copy ; if ( ! ( flags & MSG_PEEK ) ) sp -> offset = offset ; if ( sp -> offset < skb -> len ) { _debug ( \"buffer<S2SV_blank>full\" ) ; ASSERTCMP ( copied , == , len ) ; break ; } if ( sp -> hdr . flags & RXRPC_LAST_PACKET ) { _debug ( \"last\" ) ; if ( call -> conn -> out_clientflag ) { ret = copied ; goto terminal_message ; } if ( ! ( flags & MSG_PEEK ) ) { _debug ( \"eat<S2SV_blank>packet\" ) ; if ( skb_dequeue ( & rx -> sk . sk_receive_queue ) != skb ) BUG ( ) ; rxrpc_free_skb ( skb ) ; } msg -> msg_flags &= ~ MSG_MORE ; break ; } _debug ( \"next\" ) ; if ( ! continue_call ) continue_call = sp -> call ; else rxrpc_put_call ( call ) ; call = NULL ; if ( flags & MSG_PEEK ) { _debug ( \"peek<S2SV_blank>next\" ) ; skb = skb -> next ; if ( skb == ( struct sk_buff * ) & rx -> sk . sk_receive_queue ) break ; goto peek_next_packet ; } _debug ( \"eat<S2SV_blank>packet\" ) ; if ( skb_dequeue ( & rx -> sk . sk_receive_queue ) != skb ) BUG ( ) ; rxrpc_free_skb ( skb ) ; } _debug ( \"end<S2SV_blank>rcv<S2SV_blank>data\" ) ; out : release_sock ( & rx -> sk ) ; if ( call ) rxrpc_put_call ( call ) ; if ( continue_call ) rxrpc_put_call ( continue_call ) ; _leave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[data]\" , copied ) ; return copied ; receive_non_data_message : _debug ( \"non-data\" ) ; if ( skb -> mark == RXRPC_SKB_MARK_NEW_CALL ) { _debug ( \"RECV<S2SV_blank>NEW<S2SV_blank>CALL\" ) ; ret = put_cmsg ( msg , SOL_RXRPC , RXRPC_NEW_CALL , 0 , & abort_code ) ; if ( ret < 0 ) goto copy_error ; if ( ! ( flags & MSG_PEEK ) ) { if ( skb_dequeue ( & rx -> sk . sk_receive_queue ) != skb ) BUG ( ) ; rxrpc_free_skb ( skb ) ; } goto out ; } ret = put_cmsg ( msg , SOL_RXRPC , RXRPC_USER_CALL_ID , ullen , & call -> user_call_ID ) ; if ( ret < 0 ) goto copy_error ; ASSERT ( test_bit ( RXRPC_CALL_HAS_USERID , & call -> flags ) ) ; switch ( skb -> mark ) { case RXRPC_SKB_MARK_DATA : BUG ( ) ; case RXRPC_SKB_MARK_FINAL_ACK : ret = put_cmsg ( msg , SOL_RXRPC , RXRPC_ACK , 0 , & abort_code ) ; break ; case RXRPC_SKB_MARK_BUSY : ret = put_cmsg ( msg , SOL_RXRPC , RXRPC_BUSY , 0 , & abort_code ) ; break ; case RXRPC_SKB_MARK_REMOTE_ABORT : abort_code = call -> abort_code ; ret = put_cmsg ( msg , SOL_RXRPC , RXRPC_ABORT , 4 , & abort_code ) ; break ; case RXRPC_SKB_MARK_NET_ERROR : _debug ( \"RECV<S2SV_blank>NET<S2SV_blank>ERROR<S2SV_blank>%d\" , sp -> error ) ; abort_code = sp -> error ; ret = put_cmsg ( msg , SOL_RXRPC , RXRPC_NET_ERROR , 4 , & abort_code ) ; break ; case RXRPC_SKB_MARK_LOCAL_ERROR : _debug ( \"RECV<S2SV_blank>LOCAL<S2SV_blank>ERROR<S2SV_blank>%d\" , sp -> error ) ; abort_code = sp -> error ; ret = put_cmsg ( msg , SOL_RXRPC , RXRPC_LOCAL_ERROR , 4 , & abort_code ) ; break ; default : BUG ( ) ; break ; } if ( ret < 0 ) goto copy_error ; terminal_message : _debug ( \"terminal\" ) ; msg -> msg_flags &= ~ MSG_MORE ; msg -> msg_flags |= MSG_EOR ; if ( ! ( flags & MSG_PEEK ) ) { _net ( \"free<S2SV_blank>terminal<S2SV_blank>skb<S2SV_blank>%p\" , skb ) ; if ( skb_dequeue ( & rx -> sk . sk_receive_queue ) != skb ) BUG ( ) ; rxrpc_free_skb ( skb ) ; rxrpc_remove_user_ID ( rx , call ) ; } release_sock ( & rx -> sk ) ; rxrpc_put_call ( call ) ; if ( continue_call ) rxrpc_put_call ( continue_call ) ; _leave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ret ; copy_error : _debug ( \"copy<S2SV_blank>error\" ) ; release_sock ( & rx -> sk ) ; rxrpc_put_call ( call ) ; if ( continue_call ) rxrpc_put_call ( continue_call ) ; _leave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ret ; csum_copy_error : _debug ( \"csum<S2SV_blank>error\" ) ; release_sock ( & rx -> sk ) ; if ( continue_call ) rxrpc_put_call ( continue_call ) ; rxrpc_kill_skb ( skb ) ; skb_kill_datagram ( & rx -> sk , skb , flags ) ; rxrpc_put_call ( call ) ; return - EAGAIN ; wait_interrupted : ret = sock_intr_errno ( timeo ) ; wait_error : finish_wait ( sk_sleep ( & rx -> sk ) , & wait ) ; if ( continue_call ) rxrpc_put_call ( continue_call ) ; if ( copied ) copied = ret ; _leave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[waitfail<S2SV_blank>%d]\" , copied , ret ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> msg -> msg_name ) { size_t len = sizeof ( call -> conn -> trans -> peer -> srx ) ; memcpy ( msg -> msg_name , & call -> conn -> trans -> peer -> srx , len ) ; <S2SV_ModEnd> msg -> msg_namelen <S2SV_ModStart> msg -> msg_namelen = len ; } <S2SV_ModEnd> sock_recv_ts_and_drops ( msg\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10746\n\n```\nCWE-254 int virDomainGetTime ( virDomainPtr dom , long long * seconds , unsigned int * nseconds , unsigned int flags ) { VIR_DOMAIN_DEBUG ( dom , \"seconds=%p,<S2SV_blank>nseconds=%p,<S2SV_blank>flags=%x\" , seconds , nseconds , flags ) ; virResetLastError ( ) ; <S2SV_StartBug> virCheckDomainReturn ( dom , - 1 ) ; <S2SV_EndBug> if ( dom -> conn -> driver -> domainGetTime ) { int ret = dom -> conn -> driver -> domainGetTime ( dom , seconds , nseconds , flags ) ; if ( ret < 0 ) goto error ; return ret ; } virReportUnsupportedError ( ) ; error : virDispatchError ( dom -> conn ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , - 1 ) ; virCheckReadOnlyGoto ( dom -> conn -> flags , error\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4581\n\n```\nCWE-000 static int propagate_one ( struct mount * m ) { struct mount * child ; int type ; if ( IS_MNT_NEW ( m ) ) return 0 ; if ( ! is_subdir ( mp -> m_dentry , m -> mnt . mnt_root ) ) return 0 ; if ( peers ( m , last_dest ) ) { type = CL_MAKE_SHARED ; } else { <S2SV_StartBug> struct mount * n , * p ; <S2SV_EndBug> for ( n = m ; ; n = p ) { p = n -> mnt_master ; <S2SV_StartBug> if ( p == dest_master || IS_MNT_MARKED ( p ) ) { <S2SV_EndBug> while ( last_dest -> mnt_master != p ) { last_source = last_source -> mnt_master ; last_dest = last_source -> mnt_parent ; } if ( ! peers ( n , last_dest ) ) { last_source = last_source -> mnt_master ; last_dest = last_source -> mnt_parent ; } break ; } } type = CL_SLAVE ; if ( IS_MNT_SHARED ( m ) ) type |= CL_MAKE_SHARED ; } if ( m -> mnt_ns -> user_ns != user_ns ) type |= CL_UNPRIVILEGED ; child = copy_tree ( last_source , last_source -> mnt . mnt_root , type ) ; if ( IS_ERR ( child ) ) return PTR_ERR ( child ) ; child -> mnt . mnt_flags &= ~ MNT_LOCKED ; mnt_set_mountpoint ( m , mp , child ) ; last_dest = m ; last_source = child ; if ( m -> mnt_master != dest_master ) { read_seqlock_excl ( & mount_lock ) ; SET_MNT_MARK ( m -> mnt_master ) ; read_sequnlock_excl ( & mount_lock ) ; } hlist_add_head ( & child -> mnt_hash , list ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * p ; bool done <S2SV_ModStart> p ) ) break ; } do { struct mount * parent = last_source -> mnt_parent ; if ( last_source == first_source ) break ; done = parent -> mnt_master == p ; if ( done && peers ( n , parent ) ) break ; last_source = last_source -> mnt_master ; } while ( ! done ) ; <S2SV_ModEnd> type = CL_SLAVE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4176\n\n```\nCWE-200 static void umount_tree ( struct mount * mnt , enum umount_tree_flags how ) { LIST_HEAD ( tmp_list ) ; struct mount * p ; if ( how & UMOUNT_PROPAGATE ) propagate_mount_unlock ( mnt ) ; for ( p = mnt ; p ; p = next_mnt ( p , mnt ) ) { p -> mnt . mnt_flags |= MNT_UMOUNT ; list_move ( & p -> mnt_list , & tmp_list ) ; } list_for_each_entry ( p , & tmp_list , mnt_list ) { list_del_init ( & p -> mnt_child ) ; } if ( how & UMOUNT_PROPAGATE ) propagate_umount ( & tmp_list ) ; while ( ! list_empty ( & tmp_list ) ) { bool disconnect ; p = list_first_entry ( & tmp_list , struct mount , mnt_list ) ; list_del_init ( & p -> mnt_expire ) ; list_del_init ( & p -> mnt_list ) ; __touch_mnt_namespace ( p -> mnt_ns ) ; p -> mnt_ns = NULL ; if ( how & UMOUNT_SYNC ) p -> mnt . mnt_flags |= MNT_SYNC_UMOUNT ; <S2SV_StartBug> disconnect = ! IS_MNT_LOCKED_AND_LAZY ( p ) ; <S2SV_EndBug> pin_insert_group ( & p -> mnt_umount , & p -> mnt_parent -> mnt , disconnect ? & unmounted : NULL ) ; if ( mnt_has_parent ( p ) ) { mnt_add_count ( p -> mnt_parent , - 1 ) ; if ( ! disconnect ) { list_add_tail ( & p -> mnt_child , & p -> mnt_parent -> mnt_mounts ) ; } else { umount_mnt ( p ) ; } } change_mnt_propagation ( p , MS_PRIVATE ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> disconnect = ! ( ( ( how & UMOUNT_CONNECTED ) && mnt_has_parent ( p ) && ( p -> mnt_parent -> mnt . mnt_flags & MNT_UMOUNT ) ) || <S2SV_ModStart> IS_MNT_LOCKED_AND_LAZY ( p )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static int check_entry_size_and_hooks ( struct ip6t_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ip6t_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct ip6t_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ip6t_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { <S2SV_StartBug> pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" <S2SV_EndBug> \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { pr_debug <S2SV_ModEnd> ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14152\n\n```\nCWE-787 static void opj_j2k_set_cinema_parameters ( opj_cparameters_t * parameters , opj_image_t * image , opj_event_mgr_t * p_manager ) { int i ; parameters -> tile_size_on = OPJ_FALSE ; parameters -> cp_tdx = 1 ; parameters -> cp_tdy = 1 ; parameters -> tp_flag = 'C' ; parameters -> tp_on = 1 ; parameters -> cp_tx0 = 0 ; parameters -> cp_ty0 = 0 ; parameters -> image_offset_x0 = 0 ; parameters -> image_offset_y0 = 0 ; parameters -> cblockw_init = 32 ; parameters -> cblockh_init = 32 ; parameters -> mode = 0 ; parameters -> roi_compno = - 1 ; parameters -> subsampling_dx = 1 ; parameters -> subsampling_dy = 1 ; parameters -> irreversible = 1 ; if ( parameters -> tcp_numlayers > 1 ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"1<S2SV_blank>single<S2SV_blank>quality<S2SV_blank>layer\" \"-><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>layers<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1<S2SV_blank>(rather<S2SV_blank>than<S2SV_blank>%d)\\\\n\" \"-><S2SV_blank>Rate<S2SV_blank>of<S2SV_blank>the<S2SV_blank>last<S2SV_blank>layer<S2SV_blank>(%3.1f)<S2SV_blank>will<S2SV_blank>be<S2SV_blank>used\" , parameters -> tcp_numlayers , parameters -> tcp_rates [ parameters -> tcp_numlayers - 1 ] ) ; parameters -> tcp_rates [ 0 ] = parameters -> tcp_rates [ parameters -> tcp_numlayers - 1 ] ; parameters -> tcp_numlayers = 1 ; } switch ( parameters -> rsiz ) { case OPJ_PROFILE_CINEMA_2K : if ( parameters -> numresolution > 6 ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>(2k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank><=<S2SV_blank>5\\\\n\" \"-><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>5<S2SV_blank>(rather<S2SV_blank>than<S2SV_blank>%d)\\\\n\" , parameters -> numresolution + 1 ) ; parameters -> numresolution = 6 ; } break ; case OPJ_PROFILE_CINEMA_4K : if ( parameters -> numresolution < 2 ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-4<S2SV_blank>(4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>>=<S2SV_blank>1<S2SV_blank>&&<S2SV_blank><=<S2SV_blank>6\\\\n\" \"-><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1<S2SV_blank>(rather<S2SV_blank>than<S2SV_blank>%d)\\\\n\" , parameters -> numresolution + 1 ) ; parameters -> numresolution = 1 ; } else if ( parameters -> numresolution > 7 ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-4<S2SV_blank>(4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>>=<S2SV_blank>1<S2SV_blank>&&<S2SV_blank><=<S2SV_blank>6\\\\n\" \"-><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>6<S2SV_blank>(rather<S2SV_blank>than<S2SV_blank>%d)\\\\n\" , parameters -> numresolution + 1 ) ; parameters -> numresolution = 7 ; } break ; default : break ; } parameters -> csty |= 0x01 ; <S2SV_StartBug> parameters -> res_spec = parameters -> numresolution - 1 ; <S2SV_EndBug> for ( i = 0 ; i < parameters -> res_spec ; i ++ ) { parameters -> prcw_init [ i ] = 256 ; <S2SV_StartBug> parameters -> prch_init [ i ] = 256 ; <S2SV_EndBug> } parameters -> prog_order = OPJ_CPRL ; if ( parameters -> rsiz == OPJ_PROFILE_CINEMA_4K ) { parameters -> numpocs = ( OPJ_UINT32 ) opj_j2k_initialise_4K_poc ( parameters -> POC , parameters -> numresolution ) ; } else { parameters -> numpocs = 0 ; } parameters -> cp_disto_alloc = 1 ; if ( parameters -> max_cs_size <= 0 ) { parameters -> max_cs_size = OPJ_CINEMA_24_CS ; opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Maximum<S2SV_blank>1302083<S2SV_blank>compressed<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>24fps\\\\n\" \"As<S2SV_blank>no<S2SV_blank>rate<S2SV_blank>has<S2SV_blank>been<S2SV_blank>given,<S2SV_blank>this<S2SV_blank>limit<S2SV_blank>will<S2SV_blank>be<S2SV_blank>used.\\\\n\" ) ; } else if ( parameters -> max_cs_size > OPJ_CINEMA_24_CS ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Maximum<S2SV_blank>1302083<S2SV_blank>compressed<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>24fps\\\\n\" \"-><S2SV_blank>Specified<S2SV_blank>rate<S2SV_blank>exceeds<S2SV_blank>this<S2SV_blank>limit.<S2SV_blank>Rate<S2SV_blank>will<S2SV_blank>be<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1302083<S2SV_blank>bytes.\\\\n\" ) ; parameters -> max_cs_size = OPJ_CINEMA_24_CS ; } if ( parameters -> max_comp_size <= 0 ) { parameters -> max_comp_size = OPJ_CINEMA_24_COMP ; opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Maximum<S2SV_blank>1041666<S2SV_blank>compressed<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>24fps\\\\n\" \"As<S2SV_blank>no<S2SV_blank>rate<S2SV_blank>has<S2SV_blank>been<S2SV_blank>given,<S2SV_blank>this<S2SV_blank>limit<S2SV_blank>will<S2SV_blank>be<S2SV_blank>used.\\\\n\" ) ; } else if ( parameters -> max_comp_size > OPJ_CINEMA_24_COMP ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Maximum<S2SV_blank>1041666<S2SV_blank>compressed<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>24fps\\\\n\" \"-><S2SV_blank>Specified<S2SV_blank>rate<S2SV_blank>exceeds<S2SV_blank>this<S2SV_blank>limit.<S2SV_blank>Rate<S2SV_blank>will<S2SV_blank>be<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1041666<S2SV_blank>bytes.\\\\n\" ) ; parameters -> max_comp_size = OPJ_CINEMA_24_COMP ; } parameters -> tcp_rates [ 0 ] = ( OPJ_FLOAT32 ) ( image -> numcomps * image -> comps [ 0 ] . w * image -> comps [ 0 ] . h * image -> comps [ 0 ] . prec ) / ( OPJ_FLOAT32 ) ( ( ( OPJ_UINT32 ) parameters -> max_cs_size ) * 8 * image -> comps [ 0 ] . dx * image -> comps [ 0 ] . dy ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= 0x01 ; if ( parameters -> numresolution == 1 ) { parameters -> res_spec = 1 ; parameters -> prcw_init [ 0 ] = 128 ; parameters -> prch_init [ 0 ] = 128 ; } else { <S2SV_ModStart> = 256 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 <S2SV_StartBug> static inline void jmp_rel ( struct x86_emulate_ctxt * ctxt , int rel ) <S2SV_EndBug> { <S2SV_StartBug> assign_eip_near ( ctxt , ctxt -> _eip + rel ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static inline int <S2SV_ModEnd> jmp_rel ( struct <S2SV_ModStart> rel ) { return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3638\n\n```\nCWE-000 static int ext4_ext_convert_to_initialized ( handle_t * handle , struct inode * inode , struct ext4_map_blocks * map , struct ext4_ext_path * path ) { <S2SV_StartBug> struct ext4_extent * ex , newex , orig_ex ; <S2SV_EndBug> <S2SV_StartBug> struct ext4_extent * ex1 = NULL ; <S2SV_EndBug> struct ext4_extent * ex2 = NULL ; struct ext4_extent * ex3 = NULL ; struct ext4_extent_header * eh ; ext4_lblk_t ee_block , eof_block ; unsigned int allocated , ee_len , depth ; <S2SV_StartBug> ext4_fsblk_t newblock ; <S2SV_EndBug> int err = 0 ; <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> int may_zeroout ; ext_debug ( \"ext4_ext_convert_to_initialized:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical\" \"block<S2SV_blank>%llu,<S2SV_blank>max_blocks<S2SV_blank>%u\\\\n\" , inode -> i_ino , ( unsigned long long ) map -> m_lblk , map -> m_len ) ; eof_block = ( inode -> i_size + inode -> i_sb -> s_blocksize - 1 ) >> inode -> i_sb -> s_blocksize_bits ; if ( eof_block < map -> m_lblk + map -> m_len ) eof_block = map -> m_lblk + map -> m_len ; depth = ext_depth ( inode ) ; <S2SV_StartBug> eh = path [ depth ] . p_hdr ; <S2SV_EndBug> ex = path [ depth ] . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; allocated = ee_len - ( map -> m_lblk - ee_block ) ; <S2SV_StartBug> newblock = map -> m_lblk - ee_block + ext4_ext_pblock ( ex ) ; <S2SV_EndBug> ex2 = ex ; orig_ex . ee_block = ex -> ee_block ; orig_ex . ee_len = cpu_to_le16 ( ee_len ) ; ext4_ext_store_pblock ( & orig_ex , ext4_ext_pblock ( ex ) ) ; <S2SV_StartBug> may_zeroout = ee_block + ee_len <= eof_block ; <S2SV_EndBug> err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto out ; <S2SV_StartBug> if ( ee_len <= 2 * EXT4_EXT_ZERO_LEN && may_zeroout ) { <S2SV_EndBug> <S2SV_StartBug> err = ext4_ext_zeroout ( inode , & orig_ex ) ; <S2SV_EndBug> if ( err ) <S2SV_StartBug> goto fix_extent_len ; <S2SV_EndBug> ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; <S2SV_StartBug> return allocated ; <S2SV_EndBug> } if ( map -> m_lblk > ee_block ) { ex1 = ex ; ex1 -> ee_len = cpu_to_le16 ( map -> m_lblk - ee_block ) ; ext4_ext_mark_uninitialized ( ex1 ) ; ex2 = & newex ; } if ( ! ex1 && allocated > map -> m_len ) ex2 -> ee_len = cpu_to_le16 ( map -> m_len ) ; if ( allocated > map -> m_len ) { unsigned int newdepth ; <S2SV_StartBug> if ( allocated <= EXT4_EXT_ZERO_LEN && may_zeroout ) { <S2SV_EndBug> ex -> ee_block = orig_ex . ee_block ; <S2SV_StartBug> ex -> ee_len = cpu_to_le16 ( ee_len - allocated ) ; <S2SV_EndBug> ext4_ext_mark_uninitialized ( ex ) ; <S2SV_StartBug> ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; <S2SV_EndBug> ext4_ext_dirty ( handle , inode , path + depth ) ; ex3 = & newex ; ex3 -> ee_block = cpu_to_le32 ( map -> m_lblk ) ; ext4_ext_store_pblock ( ex3 , newblock ) ; ex3 -> ee_len = cpu_to_le16 ( allocated ) ; err = ext4_ext_insert_extent ( handle , inode , path , ex3 , 0 ) ; if ( err == - ENOSPC ) { <S2SV_StartBug> err = ext4_ext_zeroout ( inode , & orig_ex ) ; <S2SV_EndBug> if ( err ) <S2SV_StartBug> goto fix_extent_len ; <S2SV_EndBug> ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return allocated ; <S2SV_StartBug> } else if ( err ) <S2SV_EndBug> goto fix_extent_len ; <S2SV_StartBug> err = ext4_ext_zeroout ( inode , ex3 ) ; <S2SV_EndBug> if ( err ) { depth = ext_depth ( inode ) ; ext4_ext_drop_refs ( path ) ; path = ext4_ext_find_extent ( inode , map -> m_lblk , path ) ; if ( IS_ERR ( path ) ) { err = PTR_ERR ( path ) ; return err ; } ex = path [ depth ] . p_ext ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) return err ; ext4_ext_mark_uninitialized ( ex ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return err ; } return allocated ; } ex3 = & newex ; ex3 -> ee_block = cpu_to_le32 ( map -> m_lblk + map -> m_len ) ; ext4_ext_store_pblock ( ex3 , newblock + map -> m_len ) ; ex3 -> ee_len = cpu_to_le16 ( allocated - map -> m_len ) ; ext4_ext_mark_uninitialized ( ex3 ) ; err = ext4_ext_insert_extent ( handle , inode , path , ex3 , 0 ) ; if ( err == - ENOSPC && may_zeroout ) { err = ext4_ext_zeroout ( inode , & orig_ex ) ; if ( err ) goto fix_extent_len ; ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return allocated ; } else if ( err ) goto fix_extent_len ; newdepth = ext_depth ( inode ) ; ee_len -= ext4_ext_get_actual_len ( ex3 ) ; orig_ex . ee_len = cpu_to_le16 ( ee_len ) ; may_zeroout = ee_block + ee_len <= eof_block ; depth = newdepth ; ext4_ext_drop_refs ( path ) ; path = ext4_ext_find_extent ( inode , map -> m_lblk , path ) ; if ( IS_ERR ( path ) ) { err = PTR_ERR ( path ) ; goto out ; } <S2SV_StartBug> eh = path [ depth ] . p_hdr ; <S2SV_EndBug> ex = path [ depth ] . p_ext ; if ( ex2 != & newex ) ex2 = ex ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto out ; allocated = map -> m_len ; if ( le16_to_cpu ( orig_ex . ee_len ) <= EXT4_EXT_ZERO_LEN && map -> m_lblk != ee_block && may_zeroout ) { err = ext4_ext_zeroout ( inode , & orig_ex ) ; if ( err ) goto fix_extent_len ; ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return allocated ; } } if ( ex1 && ex1 != ex ) { ex1 = ex ; ex1 -> ee_len = cpu_to_le16 ( map -> m_lblk - ee_block ) ; ext4_ext_mark_uninitialized ( ex1 ) ; ex2 = & newex ; } ex2 -> ee_block = cpu_to_le32 ( map -> m_lblk ) ; ext4_ext_store_pblock ( ex2 , newblock ) ; ex2 -> ee_len = cpu_to_le16 ( allocated ) ; if ( ex2 != ex ) goto insert ; if ( ex2 > EXT_FIRST_EXTENT ( eh ) ) { ret = ext4_ext_try_to_merge ( inode , path , ex2 - 1 ) ; if ( ret ) { err = ext4_ext_correct_indexes ( handle , inode , path ) ; if ( err ) goto out ; depth = ext_depth ( inode ) ; ex2 -- ; } } if ( ! ex3 ) { ret = ext4_ext_try_to_merge ( inode , path , ex2 ) ; if ( ret ) { err = ext4_ext_correct_indexes ( handle , inode , path ) ; if ( err ) goto out ; } } err = ext4_ext_dirty ( handle , inode , path + depth ) ; goto out ; insert : err = ext4_ext_insert_extent ( handle , inode , path , & newex , 0 ) ; <S2SV_StartBug> if ( err == - ENOSPC && may_zeroout ) { <S2SV_EndBug> err = ext4_ext_zeroout ( inode , & orig_ex ) ; if ( err ) goto fix_extent_len ; ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return allocated ; } else if ( err ) goto fix_extent_len ; out : <S2SV_StartBug> ext4_ext_show_leaf ( inode , path ) ; <S2SV_EndBug> <S2SV_StartBug> return err ? err : allocated ; <S2SV_EndBug> fix_extent_len : ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_mark_uninitialized ( ex ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct ext4_map_blocks split_map ; struct ext4_extent zero_ex <S2SV_ModEnd> ; struct ext4_extent <S2SV_ModStart> struct ext4_extent * ex <S2SV_ModEnd> ; ext4_lblk_t ee_block <S2SV_ModStart> , depth ; <S2SV_ModEnd> int err = <S2SV_ModStart> 0 ; int split_flag = 0 <S2SV_ModEnd> ; ext_debug ( <S2SV_ModStart> inode ) ; ex <S2SV_ModEnd> = path [ <S2SV_ModStart> depth ] . <S2SV_ModEnd> p_ext ; ee_block <S2SV_ModStart> ee_block ) ; WARN_ON ( map -> m_lblk < ee_block ) ; split_flag |= <S2SV_ModEnd> ee_block + ee_len <S2SV_ModStart> ee_len <= eof_block ? EXT4_EXT_MAY_ZEROOUT : 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> * EXT4_EXT_ZERO_LEN && ( EXT4_EXT_MAY_ZEROOUT & split_flag ) <S2SV_ModEnd> ) { err <S2SV_ModStart> ( inode , ex <S2SV_ModEnd> ) ; if <S2SV_ModStart> err ) goto out ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto out ; ext4_ext_mark_initialized ( ex ) ; ext4_ext_try_to_merge ( inode , path , ex ) ; err = <S2SV_ModEnd> ext4_ext_dirty ( handle <S2SV_ModStart> depth ) ; goto out ; } split_map . m_lblk = map -> m_lblk ; split_map . m_len = map -> m_len ; if ( allocated > map -> m_len ) { <S2SV_ModEnd> if ( allocated <S2SV_ModStart> <= EXT4_EXT_ZERO_LEN && ( EXT4_EXT_MAY_ZEROOUT & split_flag ) ) { zero_ex . ee_block = cpu_to_le32 ( map -> m_lblk + map -> m_len ) ; zero_ex . <S2SV_ModEnd> ee_len = cpu_to_le16 <S2SV_ModStart> = cpu_to_le16 ( allocated - map -> m_len <S2SV_ModEnd> ) ; ext4_ext_store_pblock <S2SV_ModStart> ; ext4_ext_store_pblock ( & zero_ex , ext4_ext_pblock ( ex ) + map -> m_lblk - ee_block ) ; <S2SV_ModEnd> err = ext4_ext_zeroout <S2SV_ModStart> inode , & zero_ex <S2SV_ModEnd> ) ; if <S2SV_ModStart> err ) goto out ; split_map . m_lblk = map -> m_lblk ; split_map . m_len = <S2SV_ModEnd> allocated ; } <S2SV_ModStart> else if ( ( map -> m_lblk - ee_block + map -> m_len < EXT4_EXT_ZERO_LEN ) && ( EXT4_EXT_MAY_ZEROOUT & split_flag ) ) { if ( map -> m_lblk != ee_block ) { zero_ex . ee_block = ex -> ee_block ; zero_ex . ee_len = cpu_to_le16 ( map -> m_lblk - ee_block ) ; ext4_ext_store_pblock ( & zero_ex , ext4_ext_pblock ( ex ) ) <S2SV_ModEnd> ; err = <S2SV_ModStart> ( inode , & zero_ex ) ; if ( err ) <S2SV_ModEnd> goto out ; <S2SV_ModStart> out ; } allocated = map -> m_lblk - ee_block + map -> m_len ; split_map . m_lblk = ee_block ; split_map . m_len = allocated ; } } allocated = ext4_split_extent ( handle , inode , path , & split_map , split_flag <S2SV_ModEnd> , 0 ) <S2SV_ModStart> ; if ( allocated < 0 ) err = allocated <S2SV_ModEnd> ; out : <S2SV_ModStart> ; out : <S2SV_ModEnd> return err ? <S2SV_ModStart> err : allocated <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 node * Ta3Parser_ParseStringObject ( const char * s , PyObject * filename , grammar * g , int start , perrdetail * err_ret , int * flags ) { struct tok_state * tok ; int exec_input = start == file_input ; if ( initerr ( err_ret , filename ) < 0 ) return NULL ; if ( * flags & PyPARSE_IGNORE_COOKIE ) tok = Ta3Tokenizer_FromUTF8 ( s , exec_input ) ; else tok = Ta3Tokenizer_FromString ( s , exec_input ) ; if ( tok == NULL ) { err_ret -> error = PyErr_Occurred ( ) ? E_DECODE : E_NOMEM ; return NULL ; } # ifndef PGEN Py_INCREF ( err_ret -> filename ) ; tok -> filename = err_ret -> filename ; # endif <S2SV_StartBug> return parsetok ( tok , g , start , err_ret , flags ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif if ( * flags & PyPARSE_ASYNC_ALWAYS ) tok -> async_always = 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10191\n\n```\nCWE-119 static int rtmp_packet_read_one_chunk ( URLContext * h , RTMPPacket * p , int chunk_size , RTMPPacket * * prev_pkt_ptr , int * nb_prev_pkt , uint8_t hdr ) { uint8_t buf [ 16 ] ; int channel_id , timestamp , size ; uint32_t ts_field ; uint32_t extra = 0 ; enum RTMPPacketType type ; int written = 0 ; int ret , toread ; RTMPPacket * prev_pkt ; written ++ ; channel_id = hdr & 0x3F ; if ( channel_id < 2 ) { buf [ 1 ] = 0 ; if ( ffurl_read_complete ( h , buf , channel_id + 1 ) != channel_id + 1 ) return AVERROR ( EIO ) ; written += channel_id + 1 ; channel_id = AV_RL16 ( buf ) + 64 ; } if ( ( ret = ff_rtmp_check_alloc_array ( prev_pkt_ptr , nb_prev_pkt , channel_id ) ) < 0 ) return ret ; prev_pkt = * prev_pkt_ptr ; size = prev_pkt [ channel_id ] . size ; type = prev_pkt [ channel_id ] . type ; extra = prev_pkt [ channel_id ] . extra ; hdr >>= 6 ; if ( hdr == RTMP_PS_ONEBYTE ) { ts_field = prev_pkt [ channel_id ] . ts_field ; } else { if ( ffurl_read_complete ( h , buf , 3 ) != 3 ) return AVERROR ( EIO ) ; written += 3 ; ts_field = AV_RB24 ( buf ) ; if ( hdr != RTMP_PS_FOURBYTES ) { if ( ffurl_read_complete ( h , buf , 3 ) != 3 ) return AVERROR ( EIO ) ; written += 3 ; size = AV_RB24 ( buf ) ; if ( ffurl_read_complete ( h , buf , 1 ) != 1 ) return AVERROR ( EIO ) ; written ++ ; type = buf [ 0 ] ; if ( hdr == RTMP_PS_TWELVEBYTES ) { if ( ffurl_read_complete ( h , buf , 4 ) != 4 ) return AVERROR ( EIO ) ; written += 4 ; extra = AV_RL32 ( buf ) ; } } } if ( ts_field == 0xFFFFFF ) { if ( ffurl_read_complete ( h , buf , 4 ) != 4 ) return AVERROR ( EIO ) ; timestamp = AV_RB32 ( buf ) ; } else { timestamp = ts_field ; } if ( hdr != RTMP_PS_TWELVEBYTES ) timestamp += prev_pkt [ channel_id ] . timestamp ; <S2SV_StartBug> if ( ! prev_pkt [ channel_id ] . read ) { <S2SV_EndBug> if ( ( ret = ff_rtmp_packet_create ( p , channel_id , type , timestamp , size ) ) < 0 ) return ret ; p -> read = written ; p -> offset = 0 ; prev_pkt [ channel_id ] . ts_field = ts_field ; prev_pkt [ channel_id ] . timestamp = timestamp ; } else { RTMPPacket * prev = & prev_pkt [ channel_id ] ; p -> data = prev -> data ; p -> size = prev -> size ; p -> channel_id = prev -> channel_id ; p -> type = prev -> type ; p -> ts_field = prev -> ts_field ; p -> extra = prev -> extra ; p -> offset = prev -> offset ; p -> read = prev -> read + written ; p -> timestamp = prev -> timestamp ; prev -> data = NULL ; } p -> extra = extra ; prev_pkt [ channel_id ] . channel_id = channel_id ; prev_pkt [ channel_id ] . type = type ; prev_pkt [ channel_id ] . size = size ; prev_pkt [ channel_id ] . extra = extra ; size = size - p -> offset ; toread = FFMIN ( size , chunk_size ) ; if ( ffurl_read_complete ( h , p -> data + p -> offset , toread ) != toread ) { ff_rtmp_packet_destroy ( p ) ; return AVERROR ( EIO ) ; } size -= toread ; p -> read += toread ; p -> offset += toread ; if ( size > 0 ) { RTMPPacket * prev = & prev_pkt [ channel_id ] ; prev -> data = p -> data ; prev -> read = p -> read ; prev -> offset = p -> offset ; p -> data = NULL ; return AVERROR ( EAGAIN ) ; } prev_pkt [ channel_id ] . read = 0 ; return p -> read ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( prev_pkt [ channel_id ] . read && size != prev_pkt [ channel_id ] . size ) { av_log ( NULL , AV_LOG_ERROR , \"RTMP<S2SV_blank>packet<S2SV_blank>size<S2SV_blank>mismatch<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>%d\\\\n\" , size , prev_pkt [ channel_id ] . size ) ; ff_rtmp_packet_destroy ( & prev_pkt [ channel_id ] ) ; prev_pkt [ channel_id ] . read = 0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-26247\n\n```\nCWE-611 <S2SV_StartBug> static VALUE read_memory ( VALUE klass , VALUE content ) <S2SV_EndBug> { xmlRelaxNGParserCtxtPtr ctx = xmlRelaxNGNewMemParserCtxt ( ( const char * ) StringValuePtr ( content ) , ( int ) RSTRING_LEN ( content ) <S2SV_StartBug> ) ; <S2SV_EndBug> xmlRelaxNGPtr schema ; <S2SV_StartBug> VALUE errors = rb_ary_new ( ) ; <S2SV_EndBug> VALUE rb_schema ; xmlSetStructuredErrorFunc ( ( void * ) errors , Nokogiri_error_array_pusher ) ; # ifdef HAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS xmlRelaxNGSetParserStructuredErrors ( ctx , Nokogiri_error_array_pusher , ( void * ) errors ) ; # endif schema = xmlRelaxNGParse ( ctx ) ; xmlSetStructuredErrorFunc ( NULL , NULL ) ; xmlRelaxNGFreeParserCtxt ( ctx ) ; if ( NULL == schema ) { xmlErrorPtr error = xmlGetLastError ( ) ; if ( error ) Nokogiri_error_raise ( NULL , error ) ; else rb_raise ( rb_eRuntimeError , \"Could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>document\" ) ; return Qnil ; } rb_schema = Data_Wrap_Struct ( klass , 0 , dealloc , schema ) ; rb_iv_set ( rb_schema , \"@errors\" , errors ) ; <S2SV_StartBug> return rb_schema ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VALUE read_memory ( int argc , VALUE * argv , VALUE klass ) { VALUE content ; VALUE parse_options ; xmlRelaxNGParserCtxtPtr ctx ; xmlRelaxNGPtr schema ; VALUE errors ; VALUE rb_schema ; int scanned_args = 0 ; scanned_args = rb_scan_args ( argc , argv , \"11\" , & content , & parse_options ) ; if ( scanned_args == 1 ) { parse_options = rb_const_get ( rb_const_get ( mNokogiriXml , rb_intern ( \"ParseOptions\" ) ) , rb_intern ( \"DEFAULT_SCHEMA\" ) ) ; } ctx <S2SV_ModEnd> = xmlRelaxNGNewMemParserCtxt ( <S2SV_ModStart> ( content ) ) ; <S2SV_ModEnd> errors = rb_ary_new <S2SV_ModStart> rb_ary_new ( ) <S2SV_ModEnd> ; xmlSetStructuredErrorFunc ( <S2SV_ModStart> errors ) ; rb_iv_set ( rb_schema , \"@parse_options\" , parse_options ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-273(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18276\n\n```\nCWE-273 int unquoted_glob_pattern_p ( string ) register char * string ; { register int c ; char * send ; int open , bsquote ; DECLARE_MBSTATE ; open = bsquote = 0 ; send = string + strlen ( string ) ; while ( c = * string ++ ) { switch ( c ) { case '?' : case '*' : return ( 1 ) ; case '[' : open ++ ; continue ; case ']' : if ( open ) return ( 1 ) ; continue ; <S2SV_StartBug> case '+' : <S2SV_EndBug> case '@' : case '!' : if ( * string == '(' ) return ( 1 ) ; continue ; case '\\\\\\\\' : if ( * string != '\\\\0' && * string != '/' ) { bsquote = 1 ; string ++ ; continue ; } <S2SV_StartBug> else if ( * string == 0 ) <S2SV_EndBug> return ( 0 ) ; case CTLESC : if ( * string ++ == '\\\\0' ) return ( 0 ) ; } # ifdef HANDLE_MULTIBYTE string -- ; ADVANCE_CHAR_P ( string , send - string ) ; string ++ ; # else ADVANCE_CHAR_P ( string , send - string ) ; # endif } return ( ( bsquote && posix_glob_backslash ) ? 2 : 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> continue ; case '/' : if ( open ) open = 0 ; case <S2SV_ModStart> else if ( open && * string == '/' ) { string ++ ; continue ; } else if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14814\n\n```\nCWE-120 void mwifiex_set_uap_rates ( struct mwifiex_uap_bss_param * bss_cfg , struct cfg80211_ap_settings * params ) { struct ieee_types_header * rate_ie ; int var_offset = offsetof ( struct ieee80211_mgmt , u . beacon . variable ) ; const u8 * var_pos = params -> beacon . head + var_offset ; int len = params -> beacon . head_len - var_offset ; u8 rate_len = 0 ; rate_ie = ( void * ) cfg80211_find_ie ( WLAN_EID_SUPP_RATES , var_pos , len ) ; if ( rate_ie ) { <S2SV_StartBug> memcpy ( bss_cfg -> rates , rate_ie + 1 , rate_ie -> len ) ; <S2SV_EndBug> rate_len = rate_ie -> len ; } rate_ie = ( void * ) cfg80211_find_ie ( WLAN_EID_EXT_SUPP_RATES , params -> beacon . tail , params -> beacon . tail_len ) ; <S2SV_StartBug> if ( rate_ie ) <S2SV_EndBug> <S2SV_StartBug> memcpy ( bss_cfg -> rates + rate_len , rate_ie + 1 , rate_ie -> len ) ; <S2SV_EndBug> return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rate_ie ) { if ( rate_ie -> len > MWIFIEX_SUPPORTED_RATES ) return ; <S2SV_ModStart> ( rate_ie ) { if ( rate_ie -> len > MWIFIEX_SUPPORTED_RATES - rate_len ) return ; <S2SV_ModStart> len ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2234\n\n```\nCWE-119 static int key_notify_sa_flush ( const struct km_event * c ) { struct sk_buff * skb ; struct sadb_msg * hdr ; skb = alloc_skb ( sizeof ( struct sadb_msg ) + 16 , GFP_ATOMIC ) ; if ( ! skb ) return - ENOBUFS ; hdr = ( struct sadb_msg * ) skb_put ( skb , sizeof ( struct sadb_msg ) ) ; hdr -> sadb_msg_satype = pfkey_proto2satype ( c -> data . proto ) ; hdr -> sadb_msg_type = SADB_FLUSH ; hdr -> sadb_msg_seq = c -> seq ; hdr -> sadb_msg_pid = c -> portid ; hdr -> sadb_msg_version = PF_KEY_V2 ; hdr -> sadb_msg_errno = ( uint8_t ) 0 ; hdr -> sadb_msg_len = ( sizeof ( struct sadb_msg ) / sizeof ( uint64_t ) ) ; <S2SV_StartBug> pfkey_broadcast ( skb , GFP_ATOMIC , BROADCAST_ALL , NULL , c -> net ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; hdr -> sadb_msg_reserved = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 uint16_t enc624j600ReadPhyReg ( NetInterface * interface , uint8_t address ) { <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MIREGADR , MIREGADR_R8 | address ) ; <S2SV_EndBug> <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MICMD , MICMD_MIIRD ) ; <S2SV_EndBug> usleep ( 100 ) ; <S2SV_StartBug> while ( ( enc624j600ReadReg ( interface , ENC624J600_REG_MISTAT ) & MISTAT_BUSY ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> } <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MICMD , 0x00 ) ; <S2SV_EndBug> <S2SV_StartBug> return enc624j600ReadReg ( interface , ENC624J600_REG_MIRD ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> address ) { uint16_t status ; <S2SV_ModStart> ( interface , ENC624J600_MIREGADR , ENC624J600_MIREGADR_R12_8_DEFAULT <S2SV_ModEnd> | address ) <S2SV_ModStart> ( interface , ENC624J600_MICMD , ENC624J600_MICMD_MIIRD <S2SV_ModEnd> ) ; usleep <S2SV_ModStart> 100 ) ; do { status = <S2SV_ModEnd> enc624j600ReadReg ( interface <S2SV_ModStart> ( interface , ENC624J600_MISTAT ) ; } while ( ( status & ENC624J600_MISTAT_BUSY <S2SV_ModEnd> ) != 0 <S2SV_ModStart> != 0 ) ; <S2SV_ModEnd> enc624j600WriteReg ( interface <S2SV_ModStart> ( interface , ENC624J600_MICMD <S2SV_ModEnd> , 0x00 ) <S2SV_ModStart> ( interface , ENC624J600_MIRD <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2694\n\n```\nCWE-264 static void pkinit_server_verify_padata ( krb5_context context , krb5_data * req_pkt , krb5_kdc_req * request , krb5_enc_tkt_part * enc_tkt_reply , krb5_pa_data * data , krb5_kdcpreauth_callbacks cb , krb5_kdcpreauth_rock rock , krb5_kdcpreauth_moddata moddata , krb5_kdcpreauth_verify_respond_fn respond , void * arg ) { krb5_error_code retval = 0 ; krb5_data authp_data = { 0 , 0 , NULL } , krb5_authz = { 0 , 0 , NULL } ; krb5_pa_pk_as_req * reqp = NULL ; krb5_pa_pk_as_req_draft9 * reqp9 = NULL ; krb5_auth_pack * auth_pack = NULL ; krb5_auth_pack_draft9 * auth_pack9 = NULL ; pkinit_kdc_context plgctx = NULL ; pkinit_kdc_req_context reqctx = NULL ; krb5_checksum cksum = { 0 , 0 , 0 , NULL } ; krb5_data * der_req = NULL ; int valid_eku = 0 , valid_san = 0 ; krb5_data k5data ; int is_signed = 1 ; krb5_pa_data * * e_data = NULL ; krb5_kdcpreauth_modreq modreq = NULL ; pkiDebug ( \"pkinit_verify_padata:<S2SV_blank>entered!\\\\n\" ) ; if ( data == NULL || data -> length <= 0 || data -> contents == NULL ) { <S2SV_StartBug> ( * respond ) ( arg , 0 , NULL , NULL , NULL ) ; <S2SV_EndBug> return ; } if ( moddata == NULL ) { ( * respond ) ( arg , EINVAL , NULL , NULL , NULL ) ; return ; } plgctx = pkinit_find_realm_context ( context , moddata , request -> server ) ; if ( plgctx == NULL ) { <S2SV_StartBug> ( * respond ) ( arg , 0 , NULL , NULL , NULL ) ; <S2SV_EndBug> return ; } # ifdef DEBUG_ASN1 print_buffer_bin ( data -> contents , data -> length , \"/tmp/kdc_as_req\" ) ; # endif retval = pkinit_init_kdc_req_context ( context , & reqctx ) ; if ( retval ) goto cleanup ; reqctx -> pa_type = data -> pa_type ; PADATA_TO_KRB5DATA ( data , & k5data ) ; switch ( ( int ) data -> pa_type ) { case KRB5_PADATA_PK_AS_REQ : pkiDebug ( \"processing<S2SV_blank>KRB5_PADATA_PK_AS_REQ\\\\n\" ) ; retval = k5int_decode_krb5_pa_pk_as_req ( & k5data , & reqp ) ; if ( retval ) { pkiDebug ( \"decode_krb5_pa_pk_as_req<S2SV_blank>failed\\\\n\" ) ; goto cleanup ; } # ifdef DEBUG_ASN1 print_buffer_bin ( reqp -> signedAuthPack . data , reqp -> signedAuthPack . length , \"/tmp/kdc_signed_data\" ) ; # endif retval = cms_signeddata_verify ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , CMS_SIGN_CLIENT , plgctx -> opts -> require_crl_checking , ( unsigned char * ) reqp -> signedAuthPack . data , reqp -> signedAuthPack . length , ( unsigned char * * ) & authp_data . data , & authp_data . length , ( unsigned char * * ) & krb5_authz . data , & krb5_authz . length , & is_signed ) ; break ; case KRB5_PADATA_PK_AS_REP_OLD : case KRB5_PADATA_PK_AS_REQ_OLD : pkiDebug ( \"processing<S2SV_blank>KRB5_PADATA_PK_AS_REQ_OLD\\\\n\" ) ; retval = k5int_decode_krb5_pa_pk_as_req_draft9 ( & k5data , & reqp9 ) ; if ( retval ) { pkiDebug ( \"decode_krb5_pa_pk_as_req_draft9<S2SV_blank>failed\\\\n\" ) ; goto cleanup ; } # ifdef DEBUG_ASN1 print_buffer_bin ( reqp9 -> signedAuthPack . data , reqp9 -> signedAuthPack . length , \"/tmp/kdc_signed_data_draft9\" ) ; # endif retval = cms_signeddata_verify ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , CMS_SIGN_DRAFT9 , plgctx -> opts -> require_crl_checking , ( unsigned char * ) reqp9 -> signedAuthPack . data , reqp9 -> signedAuthPack . length , ( unsigned char * * ) & authp_data . data , & authp_data . length , ( unsigned char * * ) & krb5_authz . data , & krb5_authz . length , NULL ) ; break ; default : pkiDebug ( \"unrecognized<S2SV_blank>pa_type<S2SV_blank>=<S2SV_blank>%d\\\\n\" , data -> pa_type ) ; retval = EINVAL ; goto cleanup ; } if ( retval ) { pkiDebug ( \"pkcs7_signeddata_verify<S2SV_blank>failed\\\\n\" ) ; goto cleanup ; } if ( is_signed ) { retval = verify_client_san ( context , plgctx , reqctx , request -> client , & valid_san ) ; if ( retval ) goto cleanup ; if ( ! valid_san ) { pkiDebug ( \"%s:<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>an<S2SV_blank>acceptable<S2SV_blank>SAN<S2SV_blank>in<S2SV_blank>user<S2SV_blank>\" \"certificate\\\\n\" , __FUNCTION__ ) ; retval = KRB5KDC_ERR_CLIENT_NAME_MISMATCH ; goto cleanup ; } retval = verify_client_eku ( context , plgctx , reqctx , & valid_eku ) ; if ( retval ) goto cleanup ; if ( ! valid_eku ) { pkiDebug ( \"%s:<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>an<S2SV_blank>acceptable<S2SV_blank>EKU<S2SV_blank>in<S2SV_blank>user<S2SV_blank>\" \"certificate\\\\n\" , __FUNCTION__ ) ; retval = KRB5KDC_ERR_INCONSISTENT_KEY_PURPOSE ; goto cleanup ; } } else { if ( ! krb5_principal_compare ( context , request -> client , krb5_anonymous_principal ( ) ) ) { retval = KRB5KDC_ERR_PREAUTH_FAILED ; krb5_set_error_message ( context , retval , _ ( \"Pkinit<S2SV_blank>request<S2SV_blank>not<S2SV_blank>signed,<S2SV_blank>but<S2SV_blank>client<S2SV_blank>\" \"not<S2SV_blank>anonymous.\" ) ) ; goto cleanup ; } } # ifdef DEBUG_ASN1 print_buffer_bin ( authp_data . data , authp_data . length , \"/tmp/kdc_auth_pack\" ) ; # endif OCTETDATA_TO_KRB5DATA ( & authp_data , & k5data ) ; switch ( ( int ) data -> pa_type ) { case KRB5_PADATA_PK_AS_REQ : retval = k5int_decode_krb5_auth_pack ( & k5data , & auth_pack ) ; if ( retval ) { pkiDebug ( \"failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>krb5_auth_pack\\\\n\" ) ; goto cleanup ; } retval = krb5_check_clockskew ( context , auth_pack -> pkAuthenticator . ctime ) ; if ( retval ) goto cleanup ; if ( auth_pack -> clientPublicValue != NULL ) { retval = server_check_dh ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , & auth_pack -> clientPublicValue -> algorithm . parameters , plgctx -> opts -> dh_min_bits ) ; if ( retval ) { pkiDebug ( \"bad<S2SV_blank>dh<S2SV_blank>parameters\\\\n\" ) ; goto cleanup ; } } else if ( ! is_signed ) { retval = KRB5KDC_ERR_PREAUTH_FAILED ; krb5_set_error_message ( context , retval , _ ( \"Anonymous<S2SV_blank>pkinit<S2SV_blank>without<S2SV_blank>DH<S2SV_blank>public<S2SV_blank>\" \"value<S2SV_blank>not<S2SV_blank>supported.\" ) ) ; goto cleanup ; } der_req = cb -> request_body ( context , rock ) ; retval = krb5_c_make_checksum ( context , CKSUMTYPE_NIST_SHA , NULL , 0 , der_req , & cksum ) ; if ( retval ) { pkiDebug ( \"unable<S2SV_blank>to<S2SV_blank>calculate<S2SV_blank>AS<S2SV_blank>REQ<S2SV_blank>checksum\\\\n\" ) ; goto cleanup ; } if ( cksum . length != auth_pack -> pkAuthenticator . paChecksum . length || k5_bcmp ( cksum . contents , auth_pack -> pkAuthenticator . paChecksum . contents , cksum . length ) != 0 ) { pkiDebug ( \"failed<S2SV_blank>to<S2SV_blank>match<S2SV_blank>the<S2SV_blank>checksum\\\\n\" ) ; # ifdef DEBUG_CKSUM pkiDebug ( \"calculating<S2SV_blank>checksum<S2SV_blank>on<S2SV_blank>buf<S2SV_blank>size<S2SV_blank>(%d)\\\\n\" , req_pkt -> length ) ; print_buffer ( req_pkt -> data , req_pkt -> length ) ; pkiDebug ( \"received<S2SV_blank>checksum<S2SV_blank>type=%d<S2SV_blank>size=%d<S2SV_blank>\" , auth_pack -> pkAuthenticator . paChecksum . checksum_type , auth_pack -> pkAuthenticator . paChecksum . length ) ; print_buffer ( auth_pack -> pkAuthenticator . paChecksum . contents , auth_pack -> pkAuthenticator . paChecksum . length ) ; pkiDebug ( \"expected<S2SV_blank>checksum<S2SV_blank>type=%d<S2SV_blank>size=%d<S2SV_blank>\" , cksum . checksum_type , cksum . length ) ; print_buffer ( cksum . contents , cksum . length ) ; # endif retval = KRB5KDC_ERR_PA_CHECKSUM_MUST_BE_INCLUDED ; goto cleanup ; } if ( reqp -> kdcPkId . data != NULL ) { int valid_kdcPkId = 0 ; retval = pkinit_check_kdc_pkid ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , ( unsigned char * ) reqp -> kdcPkId . data , reqp -> kdcPkId . length , & valid_kdcPkId ) ; if ( retval ) goto cleanup ; if ( ! valid_kdcPkId ) pkiDebug ( \"kdcPkId<S2SV_blank>in<S2SV_blank>AS_REQ<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>KDC\\'s<S2SV_blank>cert\" \"RFC<S2SV_blank>says<S2SV_blank>to<S2SV_blank>ignore<S2SV_blank>and<S2SV_blank>proceed\\\\n\" ) ; } reqctx -> rcv_auth_pack = auth_pack ; auth_pack = NULL ; break ; case KRB5_PADATA_PK_AS_REP_OLD : case KRB5_PADATA_PK_AS_REQ_OLD : retval = k5int_decode_krb5_auth_pack_draft9 ( & k5data , & auth_pack9 ) ; if ( retval ) { pkiDebug ( \"failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>krb5_auth_pack_draft9\\\\n\" ) ; goto cleanup ; } if ( auth_pack9 -> clientPublicValue != NULL ) { retval = server_check_dh ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , & auth_pack9 -> clientPublicValue -> algorithm . parameters , plgctx -> opts -> dh_min_bits ) ; if ( retval ) { pkiDebug ( \"bad<S2SV_blank>dh<S2SV_blank>parameters\\\\n\" ) ; goto cleanup ; } } reqctx -> rcv_auth_pack9 = auth_pack9 ; auth_pack9 = NULL ; break ; } enc_tkt_reply -> flags |= TKT_FLG_PRE_AUTH ; modreq = ( krb5_kdcpreauth_modreq ) reqctx ; reqctx = NULL ; cleanup : if ( retval && data -> pa_type == KRB5_PADATA_PK_AS_REQ ) { pkiDebug ( \"pkinit_verify_padata<S2SV_blank>failed:<S2SV_blank>creating<S2SV_blank>e-data\\\\n\" ) ; if ( pkinit_create_edata ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , plgctx -> opts , retval , & e_data ) ) pkiDebug ( \"pkinit_create_edata<S2SV_blank>failed\\\\n\" ) ; } switch ( ( int ) data -> pa_type ) { case KRB5_PADATA_PK_AS_REQ : free_krb5_pa_pk_as_req ( & reqp ) ; free ( cksum . contents ) ; break ; case KRB5_PADATA_PK_AS_REP_OLD : case KRB5_PADATA_PK_AS_REQ_OLD : free_krb5_pa_pk_as_req_draft9 ( & reqp9 ) ; } free ( authp_data . data ) ; free ( krb5_authz . data ) ; if ( reqctx != NULL ) pkinit_fini_kdc_req_context ( context , reqctx ) ; free_krb5_auth_pack ( & auth_pack ) ; free_krb5_auth_pack_draft9 ( context , & auth_pack9 ) ; ( * respond ) ( arg , retval , modreq , e_data , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( arg , EINVAL <S2SV_ModEnd> , NULL , <S2SV_ModStart> ( arg , EINVAL <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-200 __be32 ipv6_proxy_select_ident ( struct net * net , struct sk_buff * skb ) { <S2SV_StartBug> static u32 ip6_proxy_idents_hashrnd __read_mostly ; <S2SV_EndBug> struct in6_addr buf [ 2 ] ; struct in6_addr * addrs ; u32 id ; addrs = skb_header_pointer ( skb , skb_network_offset ( skb ) + offsetof ( struct ipv6hdr , saddr ) , sizeof ( buf ) , buf ) ; if ( ! addrs ) return 0 ; <S2SV_StartBug> net_get_random_once ( & ip6_proxy_idents_hashrnd , <S2SV_EndBug> sizeof ( ip6_proxy_idents_hashrnd ) ) ; <S2SV_StartBug> id = __ipv6_select_ident ( net , ip6_proxy_idents_hashrnd , <S2SV_EndBug> & addrs [ 1 ] , & addrs [ 0 ] ) ; return htonl ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) { <S2SV_ModEnd> struct in6_addr buf <S2SV_ModStart> return 0 ; <S2SV_ModEnd> id = __ipv6_select_ident <S2SV_ModStart> ( net , <S2SV_ModEnd> & addrs [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0552\n\n```\nCWE-000 WORD32 ih264d_mark_err_slice_skip ( dec_struct_t * ps_dec , WORD32 num_mb_skip , UWORD8 u1_is_idr_slice , UWORD16 u2_frame_num , pocstruct_t * ps_cur_poc , WORD32 prev_slice_err ) { WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 ; UWORD32 u1_mb_idx = ps_dec -> u1_mb_idx ; UWORD32 i2_mb_skip_run ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD32 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end ; UWORD32 u1_tfr_n_mb ; UWORD32 u1_decode_nmb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD16 u2_total_mbs_coded ; UWORD32 u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; parse_part_params_t * ps_part_info ; WORD32 ret ; if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return 0 ; } if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag && ( num_mb_skip & 1 ) ) { num_mb_skip ++ ; } ps_dec -> ps_dpb_cmds -> u1_long_term_reference_flag = 0 ; if ( prev_slice_err == 1 ) { ps_dec -> ps_cur_slice -> u2_frame_num = u2_frame_num ; if ( ! ps_dec -> u1_first_slice_in_stream ) { ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , ps_dec -> ps_cur_slice -> u2_frame_num ) ; ps_dec -> s_cur_pic_poc . u2_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; } { WORD32 i , j , poc = 0 ; ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = 0 ; ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; if ( ps_dec -> ps_cur_pic != NULL ) poc = ps_dec -> ps_cur_pic -> i4_poc + 2 ; j = - 1 ; for ( i = 0 ; i < MAX_NUM_PIC_PARAMS ; i ++ ) { if ( ps_dec -> ps_pps [ i ] . u1_is_valid == TRUE ) { if ( ps_dec -> ps_pps [ i ] . ps_sps -> u1_is_valid == TRUE ) { j = i ; break ; } } } if ( j == - 1 ) { <S2SV_StartBug> return ERROR_INV_SPS_PPS_T ; <S2SV_EndBug> } if ( ps_dec -> u4_pic_buf_got == 0 ) { ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_cur_slice -> u1_nal_ref_idc = 1 ; ps_dec -> ps_cur_slice -> u1_nal_unit_type = 1 ; ret = ih264d_start_of_pic ( ps_dec , poc , ps_cur_poc , ps_dec -> ps_cur_slice -> u2_frame_num , & ps_dec -> ps_pps [ j ] ) ; if ( ret != OK ) { return ret ; } } ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ 0 ] -> u1_pic_buf_id = 0 ; ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } ps_dec -> u4_first_slice_in_pic = 0 ; } else { dec_slice_struct_t * ps_parse_cur_slice ; ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; if ( ps_dec -> u1_slice_header_done && ps_parse_cur_slice == ps_dec -> ps_parse_cur_slice ) { if ( ( u1_mbaff ) && ( ps_dec -> u4_num_mbs_cur_nmb & 1 ) ) { ps_dec -> u4_num_mbs_cur_nmb = ps_dec -> u4_num_mbs_cur_nmb - 1 ; ps_dec -> u2_cur_mb_addr -- ; } u1_num_mbs = ps_dec -> u4_num_mbs_cur_nmb ; if ( u1_num_mbs ) { ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs - 1 ; } else { if ( ps_dec -> u1_separate_parse ) { ps_cur_mb_info = ps_dec -> ps_nmb_info ; } else { ps_cur_mb_info = ps_dec -> ps_nmb_info + ps_dec -> u4_num_mbs_prev_nmb - 1 ; } } ps_dec -> u2_mby = ps_cur_mb_info -> u2_mby ; ps_dec -> u2_mbx = ps_cur_mb_info -> u2_mbx ; ps_dec -> u1_mb_ngbr_availablity = ps_cur_mb_info -> u1_mb_ngbr_availablity ; if ( u1_num_mbs ) { ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_prev_mb_parse_tu_coeff_data ; ps_dec -> u2_cur_mb_addr -- ; ps_dec -> i4_submb_ofst -= SUB_BLK_SIZE ; if ( ps_dec -> u1_pr_sl_type == P_SLICE || ps_dec -> u1_pr_sl_type == B_SLICE ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = 1 ; u1_tfr_n_mb = 1 ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; ps_dec -> u1_mb_idx = 0 ; ps_dec -> u4_num_mbs_cur_nmb = 0 ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; return 0 ; } if ( ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice < ( UWORD32 ) ( ps_dec -> u2_total_mbs_coded >> ps_slice -> u1_mbaff_frame_flag ) ) { ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; ps_dec -> u2_cur_slice_num ++ ; ps_dec -> ps_parse_cur_slice ++ ; } } else { ps_dec -> ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; } } { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( volatile void * * ) pu1_buf ; } ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = ps_dec -> u2_total_mbs_coded >> u1_mbaff ; ps_dec -> ps_cur_slice -> i1_slice_alpha_c0_offset = 0 ; ps_dec -> ps_cur_slice -> i1_slice_beta_offset = 0 ; if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ps_dec -> u2_prv_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> u2_total_mbs_coded >> u1_mbaff ; ps_dec -> ps_parse_cur_slice -> u2_log2Y_crwd = ps_dec -> ps_cur_slice -> u2_log2Y_crwd ; if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_parse_cur_slice -> slice_type = P_SLICE ; ps_dec -> pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( ps_dec -> ps_cur_slice -> u2_first_mb_in_slice - 1 , ps_dec -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( ps_dec -> ps_cur_slice -> u2_first_mb_in_slice - 1 , ps_dec -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= u1_mbaff ; ps_dec -> u1_slice_header_done = 2 ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; u1_num_mbs = u1_mb_idx ; u1_slice_end = 0 ; u1_tfr_n_mb = 0 ; u1_decode_nmb = 0 ; u1_num_mbsNby2 = 0 ; i2_cur_mb_addr = ps_dec -> u2_total_mbs_coded ; i2_mb_skip_run = num_mb_skip ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) break ; ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; if ( u1_mbaff ) ih264d_get_mb_info_cavlc_mbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; else ih264d_get_mb_info_cavlc_nonmbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) { ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; } ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> u1_sub_mb_num = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_mb_mc_mode = PRED_16x16 ; ps_cur_mb_info -> u1_cbp = 0 ; ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CAVLC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; i2_mb_skip_run -- ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; u1_num_mbs ++ ; u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ! i2_mb_skip_run ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; if ( u1_tfr_n_mb ) u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice ; H264_DEC_DEBUG_PRINT ( \"Mbs<S2SV_blank>in<S2SV_blank>slice:<S2SV_blank>%d\\\\n\" , ps_dec -> ps_cur_slice -> u4_mbs_in_slice ) ; if ( ps_dec -> u4_first_slice_in_pic != 0 ) { ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return ERROR_INV_SLICE_HDR_T <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14222\n\n```\nCWE-834 static int read_tfra ( MOVContext * mov , AVIOContext * f ) { MOVFragmentIndex * index = NULL ; int version , fieldlength , i , j ; int64_t pos = avio_tell ( f ) ; uint32_t size = avio_rb32 ( f ) ; void * tmp ; if ( avio_rb32 ( f ) != MKBETAG ( 't' , 'f' , 'r' , 'a' ) ) { return 1 ; } av_log ( mov -> fc , AV_LOG_VERBOSE , \"found<S2SV_blank>tfra\\\\n\" ) ; index = av_mallocz ( sizeof ( MOVFragmentIndex ) ) ; if ( ! index ) { return AVERROR ( ENOMEM ) ; } tmp = av_realloc_array ( mov -> fragment_index_data , mov -> fragment_index_count + 1 , sizeof ( MOVFragmentIndex * ) ) ; if ( ! tmp ) { av_freep ( & index ) ; return AVERROR ( ENOMEM ) ; } mov -> fragment_index_data = tmp ; mov -> fragment_index_data [ mov -> fragment_index_count ++ ] = index ; version = avio_r8 ( f ) ; avio_rb24 ( f ) ; index -> track_id = avio_rb32 ( f ) ; fieldlength = avio_rb32 ( f ) ; index -> item_count = avio_rb32 ( f ) ; index -> items = av_mallocz_array ( index -> item_count , sizeof ( MOVFragmentIndexItem ) ) ; if ( ! index -> items ) { index -> item_count = 0 ; return AVERROR ( ENOMEM ) ; } for ( i = 0 ; i < index -> item_count ; i ++ ) { <S2SV_StartBug> int64_t time , offset ; <S2SV_EndBug> if ( version == 1 ) { time = avio_rb64 ( f ) ; offset = avio_rb64 ( f ) ; } else { time = avio_rb32 ( f ) ; offset = avio_rb32 ( f ) ; } index -> items [ i ] . time = time ; index -> items [ i ] . moof_offset = offset ; for ( j = 0 ; j < ( ( fieldlength >> 4 ) & 3 ) + 1 ; j ++ ) avio_r8 ( f ) ; for ( j = 0 ; j < ( ( fieldlength >> 2 ) & 3 ) + 1 ; j ++ ) avio_r8 ( f ) ; for ( j = 0 ; j < ( ( fieldlength >> 0 ) & 3 ) + 1 ; j ++ ) avio_r8 ( f ) ; } avio_seek ( f , pos + size , SEEK_SET ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , offset ; if ( avio_feof ( f ) ) { index -> item_count = 0 ; av_freep ( & index -> items ) ; return AVERROR_INVALIDDATA ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 static void ifb_setup ( struct net_device * dev ) { dev -> destructor = free_netdev ; dev -> netdev_ops = & ifb_netdev_ops ; ether_setup ( dev ) ; dev -> tx_queue_len = TX_Q_LIMIT ; dev -> features |= IFB_FEATURES ; dev -> vlan_features |= IFB_FEATURES ; dev -> flags |= IFF_NOARP ; dev -> flags &= ~ IFF_MULTICAST ; <S2SV_StartBug> dev -> priv_flags &= ~ IFF_XMIT_DST_RELEASE ; <S2SV_EndBug> random_ether_addr ( dev -> dev_addr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> priv_flags &= ~ ( IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING ) <S2SV_ModEnd> ; random_ether_addr (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14039\n\n```\nCWE-787 static OPJ_BOOL opj_j2k_write_sod ( opj_j2k_t * p_j2k , opj_tcd_t * p_tile_coder , OPJ_BYTE * p_data , OPJ_UINT32 * p_data_written , OPJ_UINT32 p_total_data_size , const opj_stream_private_t * p_stream , opj_event_mgr_t * p_manager ) { opj_codestream_info_t * l_cstr_info = 00 ; OPJ_UINT32 l_remaining_data ; assert ( p_j2k != 00 ) ; assert ( p_manager != 00 ) ; assert ( p_stream != 00 ) ; OPJ_UNUSED ( p_stream ) ; <S2SV_StartBug> opj_write_bytes ( p_data , J2K_MS_SOD , <S2SV_EndBug> 2 ) ; p_data += 2 ; l_remaining_data = p_total_data_size - 4 ; p_tile_coder -> tp_num = p_j2k -> m_specific_param . m_encoder . m_current_poc_tile_part_number ; p_tile_coder -> cur_tp_num = p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number ; # ifdef USE_JPWL assert ( 0 && \"TODO\" ) ; # endif if ( p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number == 0 ) { p_tile_coder -> tcd_image -> tiles -> packno = 0 ; if ( l_cstr_info ) { l_cstr_info -> packno = 0 ; } } * p_data_written = 0 ; if ( ! opj_tcd_encode_tile ( p_tile_coder , p_j2k -> m_current_tile_number , p_data , p_data_written , l_remaining_data , l_cstr_info , p_manager ) ) { opj_event_msg ( p_manager , EVT_ERROR , \"Cannot<S2SV_blank>encode<S2SV_blank>tile\\\\n\" ) ; return OPJ_FALSE ; } * p_data_written += 2 ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p_stream ) ; if ( p_total_data_size < 4 ) { opj_event_msg ( p_manager , EVT_ERROR , \"Not<S2SV_blank>enough<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>output<S2SV_blank>buffer<S2SV_blank>to<S2SV_blank>write<S2SV_blank>SOD<S2SV_blank>marker\\\\n\" ) ; return OPJ_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20458\n\n```\nCWE-125 struct r_bin_dyldcache_lib_t * r_bin_dyldcache_extract ( struct r_bin_dyldcache_obj_t * bin , int idx , int * nlib ) { ut64 liboff , linkedit_offset ; ut64 dyld_vmbase ; ut32 addend = 0 ; struct r_bin_dyldcache_lib_t * ret = NULL ; struct dyld_cache_image_info * image_infos = NULL ; struct mach_header * mh ; ut8 * data , * cmdptr ; int cmd , libsz = 0 ; RBuffer * dbuf ; char * libname ; if ( ! bin ) { return NULL ; } if ( bin -> size < 1 ) { eprintf ( \"Empty<S2SV_blank>file?<S2SV_blank>(%s)\\\\n\" , bin -> file ? bin -> file : \"(null)\" ) ; return NULL ; } if ( bin -> nlibs < 0 || idx < 0 || idx >= bin -> nlibs ) { return NULL ; } * nlib = bin -> nlibs ; ret = R_NEW0 ( struct r_bin_dyldcache_lib_t ) ; if ( ! ret ) { <S2SV_StartBug> perror ( \"malloc<S2SV_blank>(ret)\" ) ; <S2SV_EndBug> return NULL ; } if ( bin -> hdr . startaddr > bin -> size ) { eprintf ( \"corrupted<S2SV_blank>dyldcache\" ) ; free ( ret ) ; return NULL ; } if ( bin -> hdr . startaddr > bin -> size || bin -> hdr . baseaddroff > bin -> size ) { eprintf ( \"corrupted<S2SV_blank>dyldcache\" ) ; free ( ret ) ; return NULL ; } <S2SV_StartBug> image_infos = ( struct dyld_cache_image_info * ) ( bin -> b -> buf + bin -> hdr . startaddr ) ; <S2SV_EndBug> <S2SV_StartBug> dyld_vmbase = * ( ut64 * ) ( bin -> b -> buf + bin -> hdr . baseaddroff ) ; <S2SV_EndBug> liboff = image_infos [ idx ] . address - dyld_vmbase ; if ( liboff > bin -> size ) { eprintf ( \"Corrupted<S2SV_blank>file\\\\n\" ) ; free ( ret ) ; return NULL ; } ret -> offset = liboff ; <S2SV_StartBug> if ( image_infos [ idx ] . pathFileOffset > bin -> size ) { <S2SV_EndBug> <S2SV_StartBug> eprintf ( \"corrupted<S2SV_blank>file\\\\n\" ) ; <S2SV_EndBug> free ( ret ) ; return NULL ; } <S2SV_StartBug> libname = ( char * ) ( bin -> b -> buf + image_infos [ idx ] . pathFileOffset ) ; <S2SV_EndBug> data = bin -> b -> buf + liboff ; mh = ( struct mach_header * ) data ; if ( mh -> magic != MH_MAGIC && mh -> magic != MH_MAGIC_64 ) { if ( mh -> magic == 0xbebafeca ) { eprintf ( \"FAT<S2SV_blank>Binary\\\\n\" ) ; } eprintf ( \"Not<S2SV_blank>mach-o\\\\n\" ) ; free ( ret ) ; return NULL ; } if ( ! ( dbuf = r_buf_new ( ) ) ) { eprintf ( \"new<S2SV_blank>(dbuf)\\\\n\" ) ; free ( ret ) ; return NULL ; } addend = mh -> magic == MH_MAGIC ? sizeof ( struct mach_header ) : sizeof ( struct mach_header_64 ) ; r_buf_set_bytes ( dbuf , data , addend ) ; cmdptr = data + addend ; for ( cmd = 0 ; cmd < mh -> ncmds ; cmd ++ ) { struct load_command * lc = ( struct load_command * ) cmdptr ; r_buf_append_bytes ( dbuf , ( ut8 * ) lc , lc -> cmdsize ) ; cmdptr += lc -> cmdsize ; } cmdptr = data + addend ; for ( cmd = linkedit_offset = 0 ; cmd < mh -> ncmds ; cmd ++ ) { struct load_command * lc = ( struct load_command * ) cmdptr ; cmdptr += lc -> cmdsize ; switch ( lc -> cmd ) { case LC_SEGMENT : { struct segment_command * seg = ( struct segment_command * ) lc ; int t = seg -> filesize ; if ( seg -> fileoff + seg -> filesize > bin -> size || seg -> fileoff > bin -> size ) { eprintf ( \"malformed<S2SV_blank>dyldcache\\\\n\" ) ; free ( ret ) ; r_buf_free ( dbuf ) ; return NULL ; } r_buf_append_bytes ( dbuf , bin -> b -> buf + seg -> fileoff , t ) ; r_bin_dyldcache_apply_patch ( dbuf , dbuf -> length , ( ut64 ) ( ( size_t ) & seg -> fileoff - ( size_t ) data ) ) ; int sect_offset = seg -> fileoff - libsz ; libsz = dbuf -> length ; if ( ! strcmp ( seg -> segname , \"__LINKEDIT\" ) ) { linkedit_offset = sect_offset ; } if ( seg -> nsects > 0 ) { struct section * sects = ( struct section * ) ( ( ut8 * ) seg + sizeof ( struct segment_command ) ) ; int nsect ; for ( nsect = 0 ; nsect < seg -> nsects ; nsect ++ ) { if ( sects [ nsect ] . offset > libsz ) { r_bin_dyldcache_apply_patch ( dbuf , sects [ nsect ] . offset - sect_offset , ( ut64 ) ( ( size_t ) & sects [ nsect ] . offset - ( size_t ) data ) ) ; } } } } break ; case LC_SYMTAB : { struct symtab_command * st = ( struct symtab_command * ) lc ; NZ_OFFSET ( st -> symoff ) ; NZ_OFFSET ( st -> stroff ) ; } break ; case LC_DYSYMTAB : { struct dysymtab_command * st = ( struct dysymtab_command * ) lc ; NZ_OFFSET ( st -> tocoff ) ; NZ_OFFSET ( st -> modtaboff ) ; NZ_OFFSET ( st -> extrefsymoff ) ; NZ_OFFSET ( st -> indirectsymoff ) ; NZ_OFFSET ( st -> extreloff ) ; NZ_OFFSET ( st -> locreloff ) ; } break ; case LC_DYLD_INFO : case LC_DYLD_INFO_ONLY : { struct dyld_info_command * st = ( struct dyld_info_command * ) lc ; NZ_OFFSET ( st -> rebase_off ) ; NZ_OFFSET ( st -> bind_off ) ; NZ_OFFSET ( st -> weak_bind_off ) ; NZ_OFFSET ( st -> lazy_bind_off ) ; NZ_OFFSET ( st -> export_off ) ; } break ; } } ret -> b = dbuf ; strncpy ( ret -> path , libname , sizeof ( ret -> path ) - 1 ) ; ret -> size = libsz ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret ) { <S2SV_ModEnd> return NULL ; <S2SV_ModStart> NULL ; } int sz = bin -> nlibs * sizeof ( struct dyld_cache_image_info ) ; image_infos = malloc ( sz ) ; if ( ! image_infos ) { free ( ret ) ; return NULL ; } r_buf_read_at <S2SV_ModEnd> ( bin -> <S2SV_ModStart> bin -> b , <S2SV_ModEnd> bin -> hdr <S2SV_ModStart> hdr . startaddr , ( ut8 * ) image_infos , sz <S2SV_ModStart> ; dyld_vmbase = r_buf_read64le <S2SV_ModEnd> ( bin -> <S2SV_ModStart> bin -> b , <S2SV_ModEnd> bin -> hdr <S2SV_ModStart> = liboff ; int pfo = <S2SV_ModEnd> image_infos [ idx <S2SV_ModStart> ] . pathFileOffset ; if ( pfo < 0 || pfo <S2SV_ModStart> { eprintf ( \"corrupted<S2SV_blank>file:<S2SV_blank>pathFileOffset<S2SV_blank>><S2SV_blank>bin->size<S2SV_blank>(%d)\\\\n\" , pfo <S2SV_ModEnd> ) ; free <S2SV_ModStart> } libname = r_buf_read_string <S2SV_ModEnd> ( bin -> <S2SV_ModStart> bin -> b , pfo , 64 <S2SV_ModEnd> ) ; data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadAAIImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; register ssize_t x ; register PixelPacket * q ; register unsigned char * p ; size_t height , length , width ; ssize_t count , y ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } width = ReadBlobLSBLong ( image ) ; height = ReadBlobLSBLong ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( width == 0UL ) || ( height == 0UL ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { image -> columns = width ; image -> rows = height ; image -> depth = 8 ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; <S2SV_StartBug> pixels = ( unsigned char * ) AcquireQuantumMemory ( image -> columns , <S2SV_EndBug> 4 * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; length = ( size_t ) 4 * image -> columns ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { count = ReadBlob ( image , length , pixels ) ; if ( ( size_t ) count != length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; p = pixels ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelRed ( q , ScaleCharToQuantum ( * p ++ ) ) ; if ( * p == 254 ) * p = 255 ; SetPixelAlpha ( q , ScaleCharToQuantum ( * p ++ ) ) ; if ( q -> opacity != OpaqueOpacity ) image -> matte = MagickTrue ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; width = ReadBlobLSBLong ( image ) ; height = ReadBlobLSBLong ( image ) ; if ( ( width != 0UL ) && ( height != 0UL ) ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( width != 0UL ) && ( height != 0UL ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20182\n\n```\nCWE-119 static RD_BOOL mcs_recv_connect_response ( STREAM mcs_data ) { UNUSED ( mcs_data ) ; uint8 result ; <S2SV_StartBug> int length ; <S2SV_EndBug> <S2SV_StartBug> STREAM s ; <S2SV_EndBug> RD_BOOL is_fastpath ; uint8 fastpath_hdr ; logger ( Protocol , Debug , \"%s()\" , __func__ ) ; s = iso_recv ( & is_fastpath , & fastpath_hdr ) ; if ( s == NULL ) return False ; <S2SV_StartBug> ber_parse_header ( s , MCS_CONNECT_RESPONSE , & length ) ; <S2SV_EndBug> ber_parse_header ( s , BER_TAG_RESULT , & length ) ; in_uint8 ( s , result ) ; if ( result != 0 ) { logger ( Protocol , Error , \"mcs_recv_connect_response(),<S2SV_blank>result=%d\" , result ) ; return False ; } ber_parse_header ( s , BER_TAG_INTEGER , & length ) ; in_uint8s ( s , length ) ; <S2SV_StartBug> mcs_parse_domain_params ( s ) ; <S2SV_EndBug> ber_parse_header ( s , BER_TAG_OCTET_STRING , & length ) ; sec_process_mcs_data ( s ) ; return s_check_end ( s ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8 result ; uint32 <S2SV_ModEnd> length ; STREAM <S2SV_ModStart> ; STREAM s ; struct stream packet <S2SV_ModStart> return False ; packet = * s ; <S2SV_ModStart> length ) ; if ( ! s_check_rem ( s , length ) ) { rdp_protocol_error ( \"mcs_recv_connect_response(),<S2SV_blank>consume<S2SV_blank>connect<S2SV_blank>id<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2636\n\n```\nCWE-399 static int br_mdb_fill_info ( struct sk_buff * skb , struct netlink_callback * cb , struct net_device * dev ) { struct net_bridge * br = netdev_priv ( dev ) ; struct net_bridge_mdb_htable * mdb ; struct nlattr * nest , * nest2 ; int i , err = 0 ; int idx = 0 , s_idx = cb -> args [ 1 ] ; if ( br -> multicast_disabled ) return 0 ; mdb = rcu_dereference ( br -> mdb ) ; if ( ! mdb ) return 0 ; nest = nla_nest_start ( skb , MDBA_MDB ) ; if ( nest == NULL ) return - EMSGSIZE ; for ( i = 0 ; i < mdb -> max ; i ++ ) { struct net_bridge_mdb_entry * mp ; struct net_bridge_port_group * p , * * pp ; struct net_bridge_port * port ; hlist_for_each_entry_rcu ( mp , & mdb -> mhash [ i ] , hlist [ mdb -> ver ] ) { if ( idx < s_idx ) goto skip ; nest2 = nla_nest_start ( skb , MDBA_MDB_ENTRY ) ; if ( nest2 == NULL ) { err = - EMSGSIZE ; goto out ; } for ( pp = & mp -> ports ; ( p = rcu_dereference ( * pp ) ) != NULL ; pp = & p -> next ) { port = p -> port ; if ( port ) { struct br_mdb_entry e ; <S2SV_StartBug> e . ifindex = port -> dev -> ifindex ; <S2SV_EndBug> e . state = p -> state ; if ( p -> addr . proto == htons ( ETH_P_IP ) ) e . addr . u . ip4 = p -> addr . u . ip4 ; # if IS_ENABLED ( CONFIG_IPV6 ) if ( p -> addr . proto == htons ( ETH_P_IPV6 ) ) e . addr . u . ip6 = p -> addr . u . ip6 ; # endif e . addr . proto = p -> addr . proto ; if ( nla_put ( skb , MDBA_MDB_ENTRY_INFO , sizeof ( e ) , & e ) ) { nla_nest_cancel ( skb , nest2 ) ; err = - EMSGSIZE ; goto out ; } } } nla_nest_end ( skb , nest2 ) ; skip : idx ++ ; } } out : cb -> args [ 1 ] = idx ; nla_nest_end ( skb , nest ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> br_mdb_entry e ; memset ( & e , 0 , sizeof ( e ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline signed short ReadPropertyMSBShort ( const unsigned char * * p , size_t * length ) { union { unsigned short unsigned_value ; signed short signed_value ; } quantum ; int c ; register ssize_t i ; unsigned char buffer [ 2 ] ; unsigned short value ; if ( * length < 2 ) return ( ( unsigned short ) ~ 0 ) ; for ( i = 0 ; i < 2 ; i ++ ) { c = ( int ) ( * ( * p ) ++ ) ; ( * length ) -- ; buffer [ i ] = ( unsigned char ) c ; } <S2SV_StartBug> value = ( unsigned short ) ( buffer [ 0 ] << 8 ) ; <S2SV_EndBug> <S2SV_StartBug> value |= buffer [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned short ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> ] << 8 <S2SV_ModEnd> ; value |= <S2SV_ModStart> ; value |= ( unsigned short ) <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffff <S2SV_ModStart> value & 0xffff <S2SV_ModEnd> ; return (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t enc28j60UpdateMacAddrFilter ( NetInterface * interface ) { uint_t i ; uint_t k ; uint32_t crc ; uint8_t hashTable [ 8 ] ; MacFilterEntry * entry ; TRACE_DEBUG ( \"Updating<S2SV_blank>MAC<S2SV_blank>filter...\\\\r\\\\n\" ) ; osMemset ( hashTable , 0 , sizeof ( hashTable ) ) ; for ( i = 0 ; i < MAC_ADDR_FILTER_SIZE ; i ++ ) { entry = & interface -> macAddrFilter [ i ] ; if ( entry -> refCount > 0 ) { crc = enc28j60CalcCrc ( & entry -> addr , sizeof ( MacAddr ) ) ; k = ( crc >> 23 ) & 0x3F ; hashTable [ k / 8 ] |= ( 1 << ( k % 8 ) ) ; } } <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_EHT0 , hashTable [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_EHT1 , hashTable [ 1 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_EHT2 , hashTable [ 2 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_EHT3 , hashTable [ 3 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_EHT4 , hashTable [ 4 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_EHT5 , hashTable [ 5 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_EHT6 , hashTable [ 6 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_EHT7 , hashTable [ 7 ] ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>EHT0<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , enc28j60ReadReg ( interface , ENC28J60_REG_EHT0 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>EHT1<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , enc28j60ReadReg ( interface , ENC28J60_REG_EHT1 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>EHT2<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , enc28j60ReadReg ( interface , ENC28J60_REG_EHT2 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>EHT3<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , enc28j60ReadReg ( interface , ENC28J60_REG_EHT3 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>EHT0<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , enc28j60ReadReg ( interface , ENC28J60_REG_EHT4 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>EHT1<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , enc28j60ReadReg ( interface , ENC28J60_REG_EHT5 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>EHT2<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , enc28j60ReadReg ( interface , ENC28J60_REG_EHT6 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>EHT3<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , enc28j60ReadReg ( interface , ENC28J60_REG_EHT7 ) ) ; <S2SV_EndBug> return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC28J60_EHT0 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , ENC28J60_EHT1 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , ENC28J60_EHT2 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , ENC28J60_EHT3 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , ENC28J60_EHT4 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , ENC28J60_EHT5 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , ENC28J60_EHT6 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , ENC28J60_EHT7 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , ENC28J60_EHT0 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , ENC28J60_EHT1 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , ENC28J60_EHT2 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , ENC28J60_EHT3 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , ENC28J60_EHT4 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , ENC28J60_EHT5 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , ENC28J60_EHT6 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , ENC28J60_EHT7 <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4501\n\n```\nCWE-119 static bool parse_reconnect ( struct pool * pool , json_t * val ) { <S2SV_StartBug> char * sockaddr_url , * stratum_port , * tmp ; <S2SV_EndBug> char * url , * port , address [ 256 ] ; <S2SV_StartBug> if ( opt_disable_client_reconnect ) { <S2SV_EndBug> applog ( LOG_WARNING , \"Stratum<S2SV_blank>client.reconnect<S2SV_blank>forbidden,<S2SV_blank>aborting.\" ) ; return false ; } memset ( address , 0 , 255 ) ; <S2SV_StartBug> url = ( char * ) json_string_value ( json_array_get ( val , 0 ) ) ; <S2SV_EndBug> if ( ! url ) url = pool -> sockaddr_url ; port = ( char * ) json_string_value ( json_array_get ( val , 1 ) ) ; if ( ! port ) port = pool -> stratum_port ; <S2SV_StartBug> sprintf ( address , \"%s:%s\" , url , port ) ; <S2SV_EndBug> if ( ! extract_sockaddr ( address , & sockaddr_url , & stratum_port ) ) return false ; applog ( LOG_NOTICE , \"Reconnect<S2SV_blank>requested<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s\" , get_pool_name ( pool ) , address ) ; clear_pool_work ( pool ) ; mutex_lock ( & pool -> stratum_lock ) ; __suspend_stratum ( pool ) ; tmp = pool -> sockaddr_url ; pool -> sockaddr_url = sockaddr_url ; pool -> stratum_url = pool -> sockaddr_url ; free ( tmp ) ; tmp = pool -> stratum_port ; pool -> stratum_port = stratum_port ; free ( tmp ) ; mutex_unlock ( & pool -> stratum_lock ) ; if ( ! restart_stratum ( pool ) ) { pool_failed ( pool ) ; return false ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { if ( opt_disable_client_reconnect ) { applog ( LOG_WARNING , \"Stratum<S2SV_blank>client.reconnect<S2SV_blank>received<S2SV_blank>but<S2SV_blank>is<S2SV_blank>disabled,<S2SV_blank>not<S2SV_blank>reconnecting.\" ) ; return false ; } <S2SV_ModEnd> char * url <S2SV_ModStart> 256 ] ; char * sockaddr_url , * stratum_port , * tmp ; url = ( char * ) json_string_value ( json_array_get ( val , 0 ) ) ; if ( ! url ) url = pool -> sockaddr_url ; port <S2SV_ModEnd> = ( char <S2SV_ModStart> ( val , <S2SV_ModEnd> 1 ) ) <S2SV_ModStart> -> stratum_port ; snprintf ( address , sizeof ( address ) <S2SV_ModEnd> , \"%s:%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8953\n\n```\nCWE-399 static int ovl_copy_up_locked ( struct dentry * workdir , struct dentry * upperdir , struct dentry * dentry , struct path * lowerpath , struct kstat * stat , struct iattr * attr , const char * link ) { struct inode * wdir = workdir -> d_inode ; struct inode * udir = upperdir -> d_inode ; struct dentry * newdentry = NULL ; struct dentry * upper = NULL ; umode_t mode = stat -> mode ; int err ; newdentry = ovl_lookup_temp ( workdir , dentry ) ; err = PTR_ERR ( newdentry ) ; if ( IS_ERR ( newdentry ) ) goto out ; upper = lookup_one_len ( dentry -> d_name . name , upperdir , dentry -> d_name . len ) ; err = PTR_ERR ( upper ) ; if ( IS_ERR ( upper ) ) goto out1 ; stat -> mode &= S_IFMT ; err = ovl_create_real ( wdir , newdentry , stat , link , NULL , true ) ; stat -> mode = mode ; if ( err ) goto out2 ; if ( S_ISREG ( stat -> mode ) ) { struct path upperpath ; ovl_path_upper ( dentry , & upperpath ) ; BUG_ON ( upperpath . dentry != NULL ) ; upperpath . dentry = newdentry ; err = ovl_copy_up_data ( lowerpath , & upperpath , stat -> size ) ; if ( err ) goto out_cleanup ; } err = ovl_copy_xattr ( lowerpath -> dentry , newdentry ) ; if ( err ) goto out_cleanup ; mutex_lock ( & newdentry -> d_inode -> i_mutex ) ; err = ovl_set_attr ( newdentry , stat ) ; if ( ! err && attr ) err = notify_change ( newdentry , attr , NULL ) ; mutex_unlock ( & newdentry -> d_inode -> i_mutex ) ; if ( err ) goto out_cleanup ; err = ovl_do_rename ( wdir , newdentry , udir , upper , 0 ) ; if ( err ) goto out_cleanup ; ovl_dentry_update ( dentry , newdentry ) ; newdentry = NULL ; if ( ! S_ISDIR ( stat -> mode ) ) ovl_dentry_set_opaque ( dentry , true ) ; out2 : dput ( upper ) ; out1 : dput ( newdentry ) ; out : return err ; out_cleanup : ovl_cleanup ( wdir , newdentry ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; goto out2 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13051\n\n```\nCWE-125 static int rsvp_obj_print ( netdissect_options * ndo , const u_char * pptr , u_int plen , const u_char * tptr , const char * ident , u_int tlen , const struct rsvp_common_header * rsvp_com_header ) { const struct rsvp_object_header * rsvp_obj_header ; const u_char * obj_tptr ; union { const struct rsvp_obj_integrity_t * rsvp_obj_integrity ; const struct rsvp_obj_frr_t * rsvp_obj_frr ; } obj_ptr ; u_short rsvp_obj_len , rsvp_obj_ctype , obj_tlen , intserv_serv_tlen ; int hexdump , processed , padbytes , error_code , error_value , i , sigcheck ; union { float f ; uint32_t i ; } bw ; uint8_t namelen ; u_int action , subchannel ; while ( tlen >= sizeof ( struct rsvp_object_header ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct rsvp_object_header ) ) ; rsvp_obj_header = ( const struct rsvp_object_header * ) tptr ; rsvp_obj_len = EXTRACT_16BITS ( rsvp_obj_header -> length ) ; rsvp_obj_ctype = rsvp_obj_header -> ctype ; if ( rsvp_obj_len % 4 ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4\" , ident , rsvp_obj_len ) ) ; return - 1 ; } if ( rsvp_obj_len < sizeof ( struct rsvp_object_header ) ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>too<S2SV_blank>short<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%lu\" , ident , rsvp_obj_len , ( unsigned long ) sizeof ( const struct rsvp_object_header ) ) ) ; return - 1 ; } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>Object<S2SV_blank>(%u)<S2SV_blank>Flags:<S2SV_blank>[%s\" , ident , tok2str ( rsvp_obj_values , \"Unknown\" , rsvp_obj_header -> class_num ) , rsvp_obj_header -> class_num , ( ( rsvp_obj_header -> class_num ) & 0x80 ) ? \"ignore\" : \"reject\" ) ) ; if ( rsvp_obj_header -> class_num > 128 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ( ( rsvp_obj_header -> class_num ) & 0x40 ) ? \"and<S2SV_blank>forward\" : \"silently\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>if<S2SV_blank>unknown],<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( rsvp_ctype_values , \"Unknown\" , ( ( rsvp_obj_header -> class_num ) << 8 ) + rsvp_obj_ctype ) , rsvp_obj_ctype , rsvp_obj_len ) ) ; if ( tlen < rsvp_obj_len ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>goes<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>objects<S2SV_blank>TLV\" , ident ) ) ; return - 1 ; } obj_tptr = tptr + sizeof ( struct rsvp_object_header ) ; obj_tlen = rsvp_obj_len - sizeof ( struct rsvp_object_header ) ; if ( ! ND_TTEST2 ( * tptr , rsvp_obj_len ) ) return - 1 ; hexdump = FALSE ; switch ( rsvp_obj_header -> class_num ) { case RSVP_OBJ_SESSION : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + 5 ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in6_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + sizeof ( struct in6_addr ) + 1 ) , EXTRACT_16BITS ( obj_tptr + sizeof ( struct in6_addr ) + 2 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 36 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ip6addr_string ( ndo , obj_tptr + 20 ) ) ) ; obj_tlen -= 36 ; obj_tptr += 36 ; break ; case RSVP_CTYPE_14 : if ( obj_tlen < 26 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%08x,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ip6addr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 26 ; obj_tptr += 26 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : case RSVP_CTYPE_UNI_IPV4 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CONFIRM : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_NOTIFY_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SUGGESTED_LABEL : case RSVP_OBJ_UPSTREAM_LABEL : case RSVP_OBJ_RECOVERY_LABEL : case RSVP_OBJ_LABEL : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Generalized<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Waveband<S2SV_blank>ID:<S2SV_blank>%u%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>Label:<S2SV_blank>%u,<S2SV_blank>Stop<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_STYLE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Reservation<S2SV_blank>Style:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]\" , ident , tok2str ( rsvp_resstyle_values , \"Unknown\" , EXTRACT_24BITS ( obj_tptr + 1 ) ) , * ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TEMPLATE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \",%s<S2SV_blank>merge<S2SV_blank>capability\" , ( ( * ( obj_tptr + 4 ) ) & 0x80 ) ? \"no\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 4 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 6 ) ) & 0xfff ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Maximum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 8 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 10 ) ) & 0xfff ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum/Maximum<S2SV_blank>DLCI:<S2SV_blank>%u/%u,<S2SV_blank>%s%s<S2SV_blank>bit<S2SV_blank>DLCI\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0x7fffff , ( EXTRACT_32BITS ( obj_tptr + 8 ) ) & 0x7fffff , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 0 ) ? \"10\" : \"\" , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 2 ) ? \"23\" : \"\" ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>LSP<S2SV_blank>Encoding<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , tok2str ( gmpls_encoding_values , \"Unknown\" , * obj_tptr ) , * obj_tptr ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Switching<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Payload<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%04x)\" , ident , tok2str ( gmpls_switch_cap_values , \"Unknown\" , * ( obj_tptr + 1 ) ) , * ( obj_tptr + 1 ) , tok2str ( gmpls_payload_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RRO : case RSVP_OBJ_ERO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : while ( obj_tlen >= 4 ) { u_char length ; ND_TCHECK2 ( * obj_tptr , 4 ) ; length = * ( obj_tptr + 1 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_xro_values , \"Unknown<S2SV_blank>%u\" , RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) , length ) ) ; if ( length == 0 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>ERROR:<S2SV_blank>zero<S2SV_blank>length<S2SV_blank>ERO<S2SV_blank>subtype\" , ident ) ) ; break ; } switch ( RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) { u_char prefix_length ; case RSVP_OBJ_XRO_IPV4 : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; prefix_length = * ( obj_tptr + 6 ) ; if ( prefix_length != 32 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>Prefix<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>32\" , prefix_length ) ) ; goto invalid ; } ND_PRINT ( ( ndo , \",<S2SV_blank>%s,<S2SV_blank>%s/%u,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , RSVP_OBJ_XRO_MASK_LOOSE ( * obj_tptr ) ? \"Loose\" : \"Strict\" , ipaddr_string ( ndo , obj_tptr + 2 ) , * ( obj_tptr + 6 ) , bittok2str ( rsvp_obj_rro_flag_values , \"none\" , * ( obj_tptr + 7 ) ) ) ) ; break ; case RSVP_OBJ_XRO_LABEL : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x),<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%u\" , bittok2str ( rsvp_obj_rro_label_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) , tok2str ( rsvp_ctype_values , \"Unknown\" , * ( obj_tptr + 3 ) + 256 * RSVP_OBJ_RRO ) , * ( obj_tptr + 3 ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; } obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_HELLO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Instance:<S2SV_blank>0x%08x,<S2SV_blank>Destination<S2SV_blank>Instance:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RESTART_CAPABILITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Restart<S2SV_blank><S2SV_blank>Time:<S2SV_blank>%ums,<S2SV_blank>Recovery<S2SV_blank>Time:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SESSION_ATTRIBUTE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 4 ) return - 1 ; namelen = * ( obj_tptr + 3 ) ; if ( obj_tlen < 4 + namelen ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Session<S2SV_blank>Name:<S2SV_blank>\" , ident ) ) ; for ( i = 0 ; i < namelen ; i ++ ) safeputchar ( ndo , * ( obj_tptr + 4 + i ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x)\" , ident , ( int ) * obj_tptr , ( int ) * ( obj_tptr + 1 ) , bittok2str ( rsvp_session_attribute_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 + * ( obj_tptr + 3 ) ; obj_tptr += 4 + * ( obj_tptr + 3 ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_GENERALIZED_UNI : switch ( rsvp_obj_ctype ) { int subobj_type , af , subobj_len , total_subobj_len ; case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; total_subobj_len = obj_tlen ; while ( total_subobj_len > 0 ) { <S2SV_StartBug> subobj_len = EXTRACT_16BITS ( obj_tptr ) ; <S2SV_EndBug> subobj_type = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) >> 8 ; af = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) & 0x00FF ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>AF:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_generalized_uni_values , \"Unknown\" , subobj_type ) , subobj_type , tok2str ( af_values , \"Unknown\" , af ) , af , subobj_len ) ) ; <S2SV_StartBug> if ( subobj_len == 0 ) <S2SV_EndBug> goto invalid ; switch ( subobj_type ) { case RSVP_GEN_UNI_SUBOBJ_SOURCE_TNA_ADDRESS : case RSVP_GEN_UNI_SUBOBJ_DESTINATION_TNA_ADDRESS : switch ( af ) { case AFNUM_INET : if ( subobj_len < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv4<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_INET6 : if ( subobj_len < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv6<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_NSAP : if ( subobj_len ) { hexdump = TRUE ; } break ; } break ; case RSVP_GEN_UNI_SUBOBJ_DIVERSITY : if ( subobj_len ) { hexdump = TRUE ; } break ; case RSVP_GEN_UNI_SUBOBJ_EGRESS_LABEL : if ( subobj_len < 16 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>U-bit:<S2SV_blank>%x,<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u,<S2SV_blank>Logical<S2SV_blank>port<S2SV_blank>id:<S2SV_blank>%u,<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 31 ) , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0xFF ) , EXTRACT_32BITS ( obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 12 ) ) ) ; break ; case RSVP_GEN_UNI_SUBOBJ_SERVICE_LEVEL : if ( subobj_len < 8 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Service<S2SV_blank>level:<S2SV_blank>%u\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 24 ) ) ; break ; default : hexdump = TRUE ; break ; } total_subobj_len -= subobj_len ; obj_tptr += subobj_len ; obj_tlen += subobj_len ; } if ( total_subobj_len ) { hexdump = TRUE ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RSVP_HOP : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; if ( obj_tlen ) hexdump = TRUE ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 16 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; hexdump = TRUE ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_TIME_VALUES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Refresh<S2SV_blank>Period:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TSPEC : case RSVP_OBJ_ADSPEC : case RSVP_OBJ_FLOWSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Msg-Version:<S2SV_blank>%u,<S2SV_blank>length:<S2SV_blank>%u\" , ident , ( * obj_tptr & 0xf0 ) >> 4 , EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( obj_tlen >= 4 ) { intserv_serv_tlen = EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Service<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>break<S2SV_blank>bit<S2SV_blank>%s<S2SV_blank>set,<S2SV_blank>Service<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_intserv_service_type_values , \"unknown\" , * ( obj_tptr ) ) , * ( obj_tptr ) , ( * ( obj_tptr + 1 ) & 0x80 ) ? \"\" : \"not\" , intserv_serv_tlen ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( intserv_serv_tlen >= 4 ) { processed = rsvp_intserv_print ( ndo , obj_tptr , obj_tlen ) ; if ( processed == 0 ) break ; obj_tlen -= processed ; intserv_serv_tlen -= processed ; obj_tptr += processed ; } } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FILTERSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flow<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_24BITS ( obj_tptr + 17 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FASTREROUTE : obj_ptr . rsvp_obj_frr = ( const struct rsvp_obj_frr_t * ) obj_tptr ; switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_frr_t ) ) return - 1 ; bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include-any:<S2SV_blank>0x%08x,<S2SV_blank>Exclude-any:<S2SV_blank>0x%08x,<S2SV_blank>Include-all:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_all ) ) ) ; obj_tlen -= sizeof ( struct rsvp_obj_frr_t ) ; obj_tptr += sizeof ( struct rsvp_obj_frr_t ) ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 16 ) return - 1 ; bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include<S2SV_blank>Colors:<S2SV_blank>0x%08x,<S2SV_blank>Exclude<S2SV_blank>Colors:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_DETOUR : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : while ( obj_tlen >= 8 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>PLR-ID:<S2SV_blank>%s,<S2SV_blank>Avoid-Node-ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CLASSTYPE : case RSVP_OBJ_CLASSTYPE_OLD : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>CT:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) & 0x7 ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ERROR_SPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; error_code = * ( obj_tptr + 5 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 6 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + 4 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE : case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE_OLD : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_diffserv_te_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>Unknown<S2SV_blank>Error<S2SV_blank>Value<S2SV_blank>(%u)\" , error_value ) ) ; break ; } obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; error_code = * ( obj_tptr + 17 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 18 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + 16 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : break ; } obj_tlen -= 20 ; obj_tptr += 20 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_PROPERTIES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; padbytes = EXTRACT_16BITS ( obj_tptr + 2 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>TLV<S2SV_blank>count:<S2SV_blank>%u,<S2SV_blank>padding<S2SV_blank>bytes:<S2SV_blank>%u\" , ident , EXTRACT_16BITS ( obj_tptr ) , padbytes ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 2 + padbytes ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(0x%02x),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_prop_tlv_values , \"unknown\" , * obj_tptr ) , * obj_tptr , * ( obj_tptr + 1 ) ) ) ; if ( obj_tlen < * ( obj_tptr + 1 ) ) return - 1 ; if ( * ( obj_tptr + 1 ) < 2 ) return - 1 ; print_unknown_data ( ndo , obj_tptr + 2 , \"\\\\n\\\\t\\\\t\" , * ( obj_tptr + 1 ) - 2 ) ; obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_MESSAGE_ID : case RSVP_OBJ_MESSAGE_ID_ACK : case RSVP_OBJ_MESSAGE_ID_LIST : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[0x%02x],<S2SV_blank>epoch:<S2SV_blank>%u\" , ident , * obj_tptr , EXTRACT_24BITS ( obj_tptr + 1 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message-ID<S2SV_blank>0x%08x<S2SV_blank>(%u)\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_INTEGRITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_integrity_t ) ) return - 1 ; obj_ptr . rsvp_obj_integrity = ( const struct rsvp_obj_integrity_t * ) obj_tptr ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Key-ID<S2SV_blank>0x%04x%08x,<S2SV_blank>Sequence<S2SV_blank>0x%08x%08x,<S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , EXTRACT_16BITS ( obj_ptr . rsvp_obj_integrity -> key_id ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> key_id + 2 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence + 4 ) , bittok2str ( rsvp_obj_integrity_flag_values , \"none\" , obj_ptr . rsvp_obj_integrity -> flags ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>MD5-sum<S2SV_blank>0x%08x%08x%08x%08x<S2SV_blank>\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 4 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 8 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 12 ) ) ) ; sigcheck = signature_verify ( ndo , pptr , plen , obj_ptr . rsvp_obj_integrity -> digest , rsvp_clear_checksum , rsvp_com_header ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , tok2str ( signature_check_values , \"Unknown\" , sigcheck ) ) ) ; obj_tlen += sizeof ( struct rsvp_obj_integrity_t ) ; obj_tptr += sizeof ( struct rsvp_obj_integrity_t ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ADMIN_STATUS : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , bittok2str ( rsvp_obj_admin_status_flag_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_SET : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; action = ( EXTRACT_16BITS ( obj_tptr ) >> 8 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Action:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_label_set_action_values , \"Unknown\" , action ) , action , ( ( EXTRACT_32BITS ( obj_tptr ) & 0x7F ) ) ) ) ; switch ( action ) { case LABEL_SET_INCLUSIVE_RANGE : case LABEL_SET_EXCLUSIVE_RANGE : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>range:<S2SV_blank>%u,<S2SV_blank>End<S2SV_blank>range:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : obj_tlen -= 4 ; obj_tptr += 4 ; subchannel = 1 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subchannel<S2SV_blank>#%u:<S2SV_blank>%u\" , ident , subchannel , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; subchannel ++ ; } break ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_S2L : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SCOPE : case RSVP_OBJ_POLICY_DATA : case RSVP_OBJ_ACCEPT_LABEL_SET : case RSVP_OBJ_PROTECTION : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 || hexdump == TRUE ) print_unknown_data ( ndo , tptr + sizeof ( struct rsvp_object_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , rsvp_obj_len - sizeof ( struct rsvp_object_header ) ) ; tptr += rsvp_obj_len ; tlen -= rsvp_obj_len ; } return 0 ; invalid : ND_PRINT ( ( ndo , \"%s\" , istr ) ) ; return - 1 ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( total_subobj_len < 4 ) goto invalid ; <S2SV_ModStart> if ( subobj_len < 4 || subobj_len > total_subobj_len <S2SV_ModEnd> ) goto invalid\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4344\n\n```\nCWE-476 static OM_uint32 acc_ctx_cont ( OM_uint32 * minstat , gss_buffer_t buf , gss_ctx_id_t * ctx , gss_buffer_t * responseToken , gss_buffer_t * mechListMIC , OM_uint32 * negState , send_token_flag * return_token ) { OM_uint32 ret , tmpmin ; gss_OID supportedMech ; spnego_gss_ctx_id_t sc ; unsigned int len ; unsigned char * ptr , * bufstart ; sc = ( spnego_gss_ctx_id_t ) * ctx ; ret = GSS_S_DEFECTIVE_TOKEN ; * negState = REJECT ; * minstat = 0 ; supportedMech = GSS_C_NO_OID ; * return_token = ERROR_TOKEN_SEND ; * responseToken = * mechListMIC = GSS_C_NO_BUFFER ; ptr = bufstart = buf -> value ; # define REMAIN ( buf -> length - ( ptr - bufstart ) ) <S2SV_StartBug> if ( REMAIN > INT_MAX ) <S2SV_EndBug> return GSS_S_DEFECTIVE_TOKEN ; if ( * ptr == HEADER_ID ) { ret = g_verify_token_header ( gss_mech_spnego , & len , & ptr , 0 , REMAIN ) ; if ( ret ) { * minstat = ret ; return GSS_S_DEFECTIVE_TOKEN ; } } if ( * ptr != ( CONTEXT | 0x01 ) ) { return GSS_S_DEFECTIVE_TOKEN ; } ret = get_negTokenResp ( minstat , ptr , REMAIN , negState , & supportedMech , responseToken , mechListMIC ) ; if ( ret != GSS_S_COMPLETE ) goto cleanup ; if ( * responseToken == GSS_C_NO_BUFFER && * mechListMIC == GSS_C_NO_BUFFER ) { ret = GSS_S_DEFECTIVE_TOKEN ; goto cleanup ; } if ( supportedMech != GSS_C_NO_OID ) { ret = GSS_S_DEFECTIVE_TOKEN ; goto cleanup ; } sc -> firstpass = 0 ; * negState = ACCEPT_INCOMPLETE ; * return_token = CONT_TOKEN_SEND ; cleanup : if ( supportedMech != GSS_C_NO_OID ) { generic_gss_release_oid ( & tmpmin , & supportedMech ) ; } return ret ; # undef REMAIN }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( REMAIN == 0 || REMAIN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9763\n\n```\nCWE-119 static grub_err_t read_foo ( struct grub_disk * disk , grub_disk_addr_t sector , grub_size_t size , char * buf ) { <S2SV_StartBug> if ( disk != NULL ) { <S2SV_EndBug> <S2SV_StartBug> const int blocksize = 512 ; <S2SV_EndBug> int ret ; RIOBind * iob = disk -> data ; <S2SV_StartBug> if ( bio ) iob = bio ; <S2SV_EndBug> <S2SV_StartBug> ret = iob -> read_at ( iob -> io , delta + ( blocksize * sector ) , <S2SV_EndBug> <S2SV_StartBug> ( ut8 * ) buf , size * blocksize ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ret == - 1 ) <S2SV_EndBug> return 1 ; <S2SV_StartBug> } else eprintf ( \"oops.<S2SV_blank>no<S2SV_blank>disk\\\\n\" ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ! disk ) { eprintf ( \"oops.<S2SV_blank>no<S2SV_blank>disk\\\\n\" ) ; return 1 ; } <S2SV_ModEnd> const int blocksize <S2SV_ModStart> blocksize = 512 <S2SV_ModEnd> ; RIOBind * <S2SV_ModStart> ( bio ) { <S2SV_ModStart> = bio ; } if ( <S2SV_ModEnd> iob -> read_at <S2SV_ModStart> * blocksize ) <S2SV_ModEnd> == - 1 <S2SV_ModStart> - 1 ) { <S2SV_ModStart> 1 ; } <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_resume_port ( struct asd_sas_phy * phy ) { struct domain_device * dev ; struct asd_sas_port * port = phy -> port ; struct sas_ha_struct * sas_ha = phy -> ha ; struct sas_internal * si = to_sas_internal ( sas_ha -> core . shost -> transportt ) ; if ( si -> dft -> lldd_port_formed ) si -> dft -> lldd_port_formed ( phy ) ; if ( port -> suspended ) port -> suspended = 0 ; else { return ; } list_for_each_entry ( dev , & port -> dev_list , dev_list_node ) { int i , rc ; rc = sas_notify_lldd_dev_found ( dev ) ; if ( rc ) { <S2SV_StartBug> sas_unregister_dev ( port , dev ) ; <S2SV_EndBug> continue ; } if ( dev -> dev_type == SAS_EDGE_EXPANDER_DEVICE || dev -> dev_type == SAS_FANOUT_EXPANDER_DEVICE ) { dev -> ex_dev . ex_change_count = - 1 ; for ( i = 0 ; i < dev -> ex_dev . num_phys ; i ++ ) { struct ex_phy * phy = & dev -> ex_dev . ex_phy [ i ] ; phy -> phy_change_count = - 1 ; } } } sas_discover_event ( port , DISCE_RESUME ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> port , dev ) ; sas_destruct_devices ( port\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4502\n\n```\nCWE-119 bool initiate_stratum ( struct pool * pool ) { char s [ RBUFSIZE ] , * sret = NULL , * nonce1 , * sessionid ; json_t * val = NULL , * res_val , * err_val ; bool ret = false , recvd = false ; json_error_t err ; int n2size ; if ( ! setup_stratum_curl ( pool ) ) goto out ; resend : if ( pool -> sessionid ) sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[\\\\\"%s\\\\\"]}\" , swork_id ++ , pool -> sessionid ) ; else sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[]}\" , swork_id ++ ) ; if ( ! __stratum_send ( pool , s , strlen ( s ) ) ) { applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>s<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } if ( ! socket_full ( pool , true ) ) { applog ( LOG_DEBUG , \"Timed<S2SV_blank>out<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>response<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } sret = recv_line ( pool ) ; if ( ! sret ) goto out ; recvd = true ; val = JSON_LOADS ( sret , & err ) ; free ( sret ) ; if ( ! val ) { applog ( LOG_INFO , \"JSON<S2SV_blank>decode<S2SV_blank>failed(%d):<S2SV_blank>%s\" , err . line , err . text ) ; goto out ; } res_val = json_object_get ( val , \"result\" ) ; err_val = json_object_get ( val , \"error\" ) ; if ( ! res_val || json_is_null ( res_val ) || ( err_val && ! json_is_null ( err_val ) ) ) { char * ss ; if ( err_val ) ss = json_dumps ( err_val , JSON_INDENT ( 3 ) ) ; else ss = strdup ( \"(unknown<S2SV_blank>reason)\" ) ; applog ( LOG_INFO , \"JSON-RPC<S2SV_blank>decode<S2SV_blank>failed:<S2SV_blank>%s\" , ss ) ; free ( ss ) ; goto out ; } sessionid = json_array_string ( json_array_get ( res_val , 0 ) , 1 ) ; if ( ! sessionid ) { applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>sessionid<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } nonce1 = json_array_string ( res_val , 1 ) ; if ( ! nonce1 ) { applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>nonce1<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; free ( sessionid ) ; goto out ; } n2size = json_integer_value ( json_array_get ( res_val , 2 ) ) ; <S2SV_StartBug> if ( ! n2size ) { <S2SV_EndBug> applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>n2size<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; free ( sessionid ) ; free ( nonce1 ) ; goto out ; } mutex_lock ( & pool -> pool_lock ) ; pool -> sessionid = sessionid ; free ( pool -> nonce1 ) ; pool -> nonce1 = nonce1 ; pool -> n1_len = strlen ( nonce1 ) / 2 ; pool -> n2size = n2size ; mutex_unlock ( & pool -> pool_lock ) ; applog ( LOG_DEBUG , \"Pool<S2SV_blank>%d<S2SV_blank>stratum<S2SV_blank>session<S2SV_blank>id:<S2SV_blank>%s\" , pool -> pool_no , pool -> sessionid ) ; ret = true ; out : if ( val ) json_decref ( val ) ; if ( ret ) { if ( ! pool -> stratum_url ) pool -> stratum_url = pool -> sockaddr_url ; pool -> stratum_active = true ; pool -> swork . diff = 1 ; if ( opt_protocol ) { applog ( LOG_DEBUG , \"Pool<S2SV_blank>%d<S2SV_blank>confirmed<S2SV_blank>mining.subscribe<S2SV_blank>with<S2SV_blank>extranonce1<S2SV_blank>%s<S2SV_blank>extran2size<S2SV_blank>%d\" , pool -> pool_no , pool -> nonce1 , pool -> n2size ) ; } } else { if ( recvd && pool -> sessionid ) { mutex_lock ( & pool -> pool_lock ) ; free ( pool -> sessionid ) ; free ( pool -> nonce1 ) ; pool -> sessionid = pool -> nonce1 = NULL ; mutex_unlock ( & pool -> pool_lock ) ; applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>resume<S2SV_blank>stratum,<S2SV_blank>trying<S2SV_blank>afresh\" ) ; goto resend ; } applog ( LOG_DEBUG , \"Initiate<S2SV_blank>stratum<S2SV_blank>failed\" ) ; if ( pool -> sock != INVSOCK ) { shutdown ( pool -> sock , SHUT_RDWR ) ; pool -> sock = INVSOCK ; } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( n2size < 1 ) <S2SV_ModEnd> { applog (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0816\n\n```\nCWE-119 WORD32 ih264d_parse_inter_slice_data_cabac ( dec_struct_t * ps_dec , dec_slice_params_t * ps_slice , UWORD16 u2_first_mb_in_slice ) { UWORD32 uc_more_data_flag ; WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 , u1_mb_idx ; UWORD32 u1_mbaff ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD16 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end = 0 ; UWORD32 u1_tfr_n_mb = 0 ; UWORD32 u1_decode_nmb = 0 ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; UWORD32 u1_inter_mb_skip_type ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD32 u1_mb_threshold ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; WORD32 ret = OK ; if ( ps_slice -> u1_slice_type == P_SLICE ) { u1_inter_mb_skip_type = CAB_P_SKIP ; u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; u1_mb_threshold = 5 ; } else { u1_inter_mb_skip_type = CAB_B_SKIP ; u1_inter_mb_type = B_MB ; u1_deblk_mb_type = D_B_SLICE ; u1_mb_threshold = 23 ; } i2_cur_mb_addr = u2_first_mb_in_slice ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; u1_num_mbs = u1_mb_idx ; u1_num_mbsNby2 = 0 ; u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff ; uc_more_data_flag = 1 ; if ( ps_bitstrm -> u4_ofst & 0x07 ) { ps_bitstrm -> u4_ofst += 8 ; ps_bitstrm -> u4_ofst &= 0xFFFFFFF8 ; } ret = ih264d_init_cabac_dec_envirnoment ( & ( ps_dec -> s_cab_dec_env ) , ps_bitstrm ) ; if ( ret != OK ) return ret ; ps_dec -> i1_prev_mb_qp_delta = 0 ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; UWORD32 u4_mb_skip ; ps_dec -> pv_prev_mb_parse_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) { ret = ERROR_MB_ADDRESS_T ; break ; } ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; u4_mb_skip = ps_dec -> pf_get_mb_info ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , 1 ) ; ps_cur_mb_info -> u1_tran_form8x8 = 0 ; ps_cur_mb_info -> ps_curmb -> u1_tran_form8x8 = 0 ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; if ( u4_mb_skip ) { memset ( ps_dec -> ps_curr_ctxt_mb_info , 0 , sizeof ( ctxt_inc_mb_info_t ) ) ; ps_dec -> ps_curr_ctxt_mb_info -> u1_mb_type = u1_inter_mb_skip_type ; MEMSET_16BYTES ( & ps_dec -> pu1_left_mv_ctxt_inc [ 0 ] [ 0 ] , 0 ) ; * ( ( UWORD32 * ) ps_dec -> pi1_left_ref_idx_ctxt_inc ) = 0 ; * ( ps_dec -> pu1_left_yuv_dc_csbp ) = 0 ; ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_cbp = 0 ; { parse_part_params_t * ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; } ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CABAC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; } else { u1_mb_type = ih264d_parse_mb_type_cabac ( ps_dec ) ; ps_cur_mb_info -> u1_mb_type = u1_mb_type ; if ( u1_mb_type > ( 25 + u1_mb_threshold ) ) return ERROR_MB_TYPE ; if ( u1_mb_type < u1_mb_threshold ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; * ( ps_dec -> pu1_left_yuv_dc_csbp ) &= 0x6 ; ret = ps_dec -> pf_parse_inter_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs , u1_num_mbsNby2 ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; } else { ps_parse_mb_data -> u1_num_part = 0 ; ps_parse_mb_data -> u1_isI_mb = 1 ; if ( ( 25 + u1_mb_threshold ) == u1_mb_type ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = I_PCM_MB ; ret = ih264d_parse_ipcm_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = 0 ; } else { if ( u1_mb_type == u1_mb_threshold ) ps_cur_mb_info -> ps_curmb -> u1_mb_type = I_4x4_MB ; else ps_cur_mb_info -> ps_curmb -> u1_mb_type = I_16x16_MB ; ret = ih264d_parse_imb_cabac ( ps_dec , ps_cur_mb_info , ( UWORD8 ) ( u1_mb_type - u1_mb_threshold ) ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; } ps_cur_deblk_mb -> u1_mb_type |= D_INTRA_MB ; } } if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; if ( ps_cur_mb_info -> u1_topmb && u1_mbaff ) uc_more_data_flag = 1 ; else { uc_more_data_flag = ih264d_decode_terminate ( & ps_dec -> s_cab_dec_env , ps_bitstrm ) ; uc_more_data_flag = ! uc_more_data_flag ; COPYTHECONTEXT ( \"Decode<S2SV_blank>Sliceterm\" , ! uc_more_data_flag ) ; } u1_num_mbs ++ ; <S2SV_StartBug> ps_dec -> u2_total_mbs_coded ++ ; <S2SV_EndBug> u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ! uc_more_data_flag ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; { ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } } if ( u1_decode_nmb ) { if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } <S2SV_StartBug> if ( u1_tfr_n_mb ) <S2SV_EndBug> u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ( u2_first_mb_in_slice << u1_mbaff ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u1_num_mbs ++ ; <S2SV_ModEnd> u1_num_mbsNby2 ++ ; <S2SV_ModStart> ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20748\n\n```\nCWE-787 rfbBool HandleRFBServerMessage ( rfbClient * client ) { rfbServerToClientMsg msg ; if ( client -> serverPort == - 1 ) client -> vncRec -> readTimestamp = TRUE ; if ( ! ReadFromRFBServer ( client , ( char * ) & msg , 1 ) ) return FALSE ; switch ( msg . type ) { case rfbSetColourMapEntries : { break ; } case rfbFramebufferUpdate : { rfbFramebufferUpdateRectHeader rect ; int linesToRead ; int bytesPerLine ; int i ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg . fu ) + 1 , sz_rfbFramebufferUpdateMsg - 1 ) ) return FALSE ; msg . fu . nRects = rfbClientSwap16IfLE ( msg . fu . nRects ) ; for ( i = 0 ; i < msg . fu . nRects ; i ++ ) { if ( ! ReadFromRFBServer ( client , ( char * ) & rect , sz_rfbFramebufferUpdateRectHeader ) ) return FALSE ; rect . encoding = rfbClientSwap32IfLE ( rect . encoding ) ; if ( rect . encoding == rfbEncodingLastRect ) break ; rect . r . x = rfbClientSwap16IfLE ( rect . r . x ) ; rect . r . y = rfbClientSwap16IfLE ( rect . r . y ) ; rect . r . w = rfbClientSwap16IfLE ( rect . r . w ) ; rect . r . h = rfbClientSwap16IfLE ( rect . r . h ) ; if ( rect . encoding == rfbEncodingXCursor || rect . encoding == rfbEncodingRichCursor ) { if ( ! HandleCursorShape ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h , rect . encoding ) ) { return FALSE ; } continue ; } if ( rect . encoding == rfbEncodingPointerPos ) { if ( ! client -> HandleCursorPos ( client , rect . r . x , rect . r . y ) ) { return FALSE ; } continue ; } if ( rect . encoding == rfbEncodingKeyboardLedState ) { client -> KeyboardLedStateEnabled = 1 ; if ( client -> HandleKeyboardLedState != NULL ) client -> HandleKeyboardLedState ( client , rect . r . x , 0 ) ; client -> CurrentKeyboardLedState = rect . r . x ; continue ; } if ( rect . encoding == rfbEncodingNewFBSize ) { client -> width = rect . r . w ; client -> height = rect . r . h ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , rect . r . w , rect . r . h , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , rect . r . w , rect . r . h ) ; continue ; } if ( rect . encoding == rfbEncodingSupportedMessages ) { int loop ; if ( ! ReadFromRFBServer ( client , ( char * ) & client -> supportedMessages , sz_rfbSupportedMessages ) ) return FALSE ; rfbClientLog ( \"client2server<S2SV_blank>supported<S2SV_blank>messages<S2SV_blank>(bit<S2SV_blank>flags)\\\\n\" ) ; for ( loop = 0 ; loop < 32 ; loop += 8 ) rfbClientLog ( \"%02X:<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>-<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x\\\\n\" , loop , client -> supportedMessages . client2server [ loop ] , client -> supportedMessages . client2server [ loop + 1 ] , client -> supportedMessages . client2server [ loop + 2 ] , client -> supportedMessages . client2server [ loop + 3 ] , client -> supportedMessages . client2server [ loop + 4 ] , client -> supportedMessages . client2server [ loop + 5 ] , client -> supportedMessages . client2server [ loop + 6 ] , client -> supportedMessages . client2server [ loop + 7 ] ) ; rfbClientLog ( \"server2client<S2SV_blank>supported<S2SV_blank>messages<S2SV_blank>(bit<S2SV_blank>flags)\\\\n\" ) ; for ( loop = 0 ; loop < 32 ; loop += 8 ) rfbClientLog ( \"%02X:<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>-<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x\\\\n\" , loop , client -> supportedMessages . server2client [ loop ] , client -> supportedMessages . server2client [ loop + 1 ] , client -> supportedMessages . server2client [ loop + 2 ] , client -> supportedMessages . server2client [ loop + 3 ] , client -> supportedMessages . server2client [ loop + 4 ] , client -> supportedMessages . server2client [ loop + 5 ] , client -> supportedMessages . server2client [ loop + 6 ] , client -> supportedMessages . server2client [ loop + 7 ] ) ; continue ; } if ( rect . encoding == rfbEncodingSupportedEncodings ) { char * buffer ; buffer = malloc ( rect . r . w ) ; if ( ! ReadFromRFBServer ( client , buffer , rect . r . w ) ) { free ( buffer ) ; return FALSE ; } free ( buffer ) ; continue ; } if ( rect . encoding == rfbEncodingServerIdentity ) { char * buffer ; buffer = malloc ( rect . r . w + 1 ) ; if ( ! ReadFromRFBServer ( client , buffer , rect . r . w ) ) { free ( buffer ) ; return FALSE ; } buffer [ rect . r . w ] = 0 ; rfbClientLog ( \"Connected<S2SV_blank>to<S2SV_blank>Server<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , buffer ) ; free ( buffer ) ; continue ; } if ( rect . encoding != rfbEncodingUltraZip ) { if ( ( rect . r . x + rect . r . w > client -> width ) || ( rect . r . y + rect . r . h > client -> height ) ) { rfbClientLog ( \"Rect<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%dx%d<S2SV_blank>at<S2SV_blank>(%d,<S2SV_blank>%d)\\\\n\" , rect . r . w , rect . r . h , rect . r . x , rect . r . y ) ; return FALSE ; } client -> SoftCursorLockArea ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ; } switch ( rect . encoding ) { case rfbEncodingRaw : { int y = rect . r . y , h = rect . r . h ; bytesPerLine = rect . r . w * client -> format . bitsPerPixel / 8 ; linesToRead = bytesPerLine ? ( RFB_BUFFER_SIZE / bytesPerLine ) : 0 ; while ( linesToRead && h > 0 ) { if ( linesToRead > h ) linesToRead = h ; if ( ! ReadFromRFBServer ( client , client -> buffer , bytesPerLine * linesToRead ) ) return FALSE ; client -> GotBitmap ( client , ( uint8_t * ) client -> buffer , rect . r . x , y , rect . r . w , linesToRead ) ; h -= linesToRead ; y += linesToRead ; } break ; } case rfbEncodingCopyRect : { rfbCopyRect cr ; if ( ! ReadFromRFBServer ( client , ( char * ) & cr , sz_rfbCopyRect ) ) return FALSE ; cr . srcX = rfbClientSwap16IfLE ( cr . srcX ) ; cr . srcY = rfbClientSwap16IfLE ( cr . srcY ) ; client -> SoftCursorLockArea ( client , cr . srcX , cr . srcY , rect . r . w , rect . r . h ) ; client -> GotCopyRect ( client , cr . srcX , cr . srcY , rect . r . w , rect . r . h , rect . r . x , rect . r . y ) ; break ; } case rfbEncodingRRE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleRRE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleRRE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleRRE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingCoRRE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleCoRRE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleCoRRE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleCoRRE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingHextile : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleHextile8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleHextile16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleHextile32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingUltra : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleUltra8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleUltra16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleUltra32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingUltraZip : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleUltraZip8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleUltraZip16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleUltraZip32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingTRLE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleTRLE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( client -> si . format . greenMax > 0x1F ) { if ( ! HandleTRLE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else { if ( ! HandleTRLE15 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } break ; case 32 : { uint32_t maxColor = ( client -> format . redMax << client -> format . redShift ) | ( client -> format . greenMax << client -> format . greenShift ) | ( client -> format . blueMax << client -> format . blueShift ) ; if ( ( client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) || ( ! client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) ) { if ( ! HandleTRLE24 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) { if ( ! HandleTRLE24Up ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) { if ( ! HandleTRLE24Down ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! HandleTRLE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } } break ; } # ifdef LIBVNCSERVER_HAVE_LIBZ case rfbEncodingZlib : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleZlib8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleZlib16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleZlib32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } # ifdef LIBVNCSERVER_HAVE_LIBJPEG case rfbEncodingTight : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleTight8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleTight16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleTight32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } # endif case rfbEncodingZRLE : client -> appData . qualityLevel = 9 ; case rfbEncodingZYWRLE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleZRLE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( client -> si . format . greenMax > 0x1F ) { if ( ! HandleZRLE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else { if ( ! HandleZRLE15 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } break ; case 32 : { uint32_t maxColor = ( client -> format . redMax << client -> format . redShift ) | ( client -> format . greenMax << client -> format . greenShift ) | ( client -> format . blueMax << client -> format . blueShift ) ; if ( ( client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) || ( ! client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) ) { if ( ! HandleZRLE24 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) { if ( ! HandleZRLE24Up ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) { if ( ! HandleZRLE24Down ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! HandleZRLE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } } break ; } # endif default : { rfbBool handled = FALSE ; rfbClientProtocolExtension * e ; for ( e = rfbClientExtensions ; ! handled && e ; e = e -> next ) if ( e -> handleEncoding && e -> handleEncoding ( client , & rect ) ) handled = TRUE ; if ( ! handled ) { rfbClientLog ( \"Unknown<S2SV_blank>rect<S2SV_blank>encoding<S2SV_blank>%d\\\\n\" , ( int ) rect . encoding ) ; return FALSE ; } } } client -> SoftCursorUnlockScreen ( client ) ; client -> GotFrameBufferUpdate ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ; } if ( ! SendIncrementalFramebufferUpdateRequest ( client ) ) return FALSE ; if ( client -> FinishedFrameBufferUpdate ) client -> FinishedFrameBufferUpdate ( client ) ; break ; } case rfbBell : { client -> Bell ( client ) ; break ; } case rfbServerCutText : { char * buffer ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbServerCutTextMsg - 1 ) ) return FALSE ; msg . sct . length = rfbClientSwap32IfLE ( msg . sct . length ) ; if ( msg . sct . length > 1 << 20 ) { rfbClientErr ( \"Ignoring<S2SV_blank>too<S2SV_blank>big<S2SV_blank>cut<S2SV_blank>text<S2SV_blank>length<S2SV_blank>sent<S2SV_blank>by<S2SV_blank>server:<S2SV_blank>%u<S2SV_blank>B<S2SV_blank>><S2SV_blank>1<S2SV_blank>MB\\\\n\" , ( unsigned int ) msg . sct . length ) ; return FALSE ; } <S2SV_StartBug> buffer = malloc ( ( uint64_t ) msg . sct . length + 1 ) ; <S2SV_EndBug> if ( ! ReadFromRFBServer ( client , buffer , msg . sct . length ) ) { free ( buffer ) ; return FALSE ; } buffer [ msg . sct . length ] = 0 ; if ( client -> GotXCutText ) client -> GotXCutText ( client , buffer , msg . sct . length ) ; free ( buffer ) ; break ; } case rfbTextChat : { char * buffer = NULL ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbTextChatMsg - 1 ) ) return FALSE ; msg . tc . length = rfbClientSwap32IfLE ( msg . sct . length ) ; switch ( msg . tc . length ) { case rfbTextChatOpen : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Open\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatOpen , NULL ) ; break ; case rfbTextChatClose : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Close\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatClose , NULL ) ; break ; case rfbTextChatFinished : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Finished\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatFinished , NULL ) ; break ; default : buffer = malloc ( msg . tc . length + 1 ) ; if ( ! ReadFromRFBServer ( client , buffer , msg . tc . length ) ) { free ( buffer ) ; return FALSE ; } buffer [ msg . tc . length ] = 0 ; rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , buffer ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) msg . tc . length , buffer ) ; free ( buffer ) ; break ; } break ; } case rfbXvp : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbXvpMsg - 1 ) ) return FALSE ; SetClient2Server ( client , rfbXvp ) ; SetServer2Client ( client , rfbXvp ) ; if ( client -> HandleXvpMsg ) client -> HandleXvpMsg ( client , msg . xvp . version , msg . xvp . code ) ; break ; } case rfbResizeFrameBuffer : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbResizeFrameBufferMsg - 1 ) ) return FALSE ; client -> width = rfbClientSwap16IfLE ( msg . rsfb . framebufferWidth ) ; client -> height = rfbClientSwap16IfLE ( msg . rsfb . framebufferHeigth ) ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , client -> width , client -> height , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , client -> width , client -> height ) ; break ; } case rfbPalmVNCReSizeFrameBuffer : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbPalmVNCReSizeFrameBufferMsg - 1 ) ) return FALSE ; client -> width = rfbClientSwap16IfLE ( msg . prsfb . buffer_w ) ; client -> height = rfbClientSwap16IfLE ( msg . prsfb . buffer_h ) ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , client -> width , client -> height , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , client -> width , client -> height ) ; break ; } default : { rfbBool handled = FALSE ; rfbClientProtocolExtension * e ; for ( e = rfbClientExtensions ; ! handled && e ; e = e -> next ) if ( e -> handleMessage && e -> handleMessage ( client , & msg ) ) handled = TRUE ; if ( ! handled ) { char buffer [ 256 ] ; rfbClientLog ( \"Unknown<S2SV_blank>message<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>VNC<S2SV_blank>server\\\\n\" , msg . type ) ; ReadFromRFBServer ( client , buffer , 256 ) ; return FALSE ; } } } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = malloc ( <S2SV_ModEnd> msg . sct\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_type_ignore ( PyObject * obj , type_ignore_ty * out , PyArena * arena ) { int isinstance ; PyObject * tmp = NULL ; if ( obj == Py_None ) { * out = NULL ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) TypeIgnore_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { int lineno ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_lineno ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_lineno ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_int ( tmp , & lineno , arena ) ; <S2SV_EndBug> <S2SV_StartBug> if ( res != 0 ) goto failed ; <S2SV_EndBug> <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>TypeIgnore\" ) ; return 1 ; } * out = TypeIgnore ( lineno , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>some<S2SV_blank>sort<S2SV_blank>of<S2SV_blank>type_ignore,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%R\" , obj ) ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>TypeIgnore\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_int ( tmp , & lineno , arena ) ; if ( res != 0 <S2SV_ModEnd> ) goto failed <S2SV_ModStart> goto failed ; Py_CLEAR ( tmp ) ; } * out = TypeIgnore ( <S2SV_ModEnd> lineno , arena <S2SV_ModStart> ; if ( * out == NULL <S2SV_ModEnd> ) goto failed <S2SV_ModStart> goto failed ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , char * * argv ) { int frame_cnt = 0 ; FILE * outfile = NULL ; vpx_codec_ctx_t codec ; VpxVideoReader * reader = NULL ; const VpxVideoInfo * info = NULL ; const VpxInterface * decoder = NULL ; exec_name = argv [ 0 ] ; if ( argc != 3 ) die ( \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments.\" ) ; reader = vpx_video_reader_open ( argv [ 1 ] ) ; if ( ! reader ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading.\" , argv [ 1 ] ) ; if ( ! ( outfile = fopen ( argv [ 2 ] , \"wb\" ) ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing.\" , argv [ 2 ] ) ; info = vpx_video_reader_get_info ( reader ) ; decoder = get_vpx_decoder_by_fourcc ( info -> codec_fourcc ) ; if ( ! decoder ) die ( \"Unknown<S2SV_blank>input<S2SV_blank>codec.\" ) ; <S2SV_StartBug> printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( decoder -> interface ( ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( vpx_codec_dec_init ( & codec , decoder -> interface ( ) , NULL , 0 ) ) <S2SV_EndBug> die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>decoder\" ) ; while ( vpx_video_reader_read_frame ( reader ) ) { vpx_codec_iter_t iter = NULL ; vpx_image_t * img = NULL ; size_t frame_size = 0 ; const unsigned char * frame = vpx_video_reader_get_frame ( reader , & frame_size ) ; if ( vpx_codec_decode ( & codec , frame , ( unsigned int ) frame_size , NULL , 0 ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>frame\" ) ; while ( ( img = vpx_codec_get_frame ( & codec , & iter ) ) != NULL ) { unsigned char digest [ 16 ] ; get_image_md5 ( img , digest ) ; print_md5 ( outfile , digest ) ; fprintf ( outfile , \"<S2SV_blank><S2SV_blank>img-%dx%d-%04d.i420\\\\n\" , img -> d_w , img -> d_h , ++ frame_cnt ) ; } } printf ( \"Processed<S2SV_blank>%d<S2SV_blank>frames.\\\\n\" , frame_cnt ) ; if ( vpx_codec_destroy ( & codec ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>codec.\" ) ; vpx_video_reader_close ( reader ) ; fclose ( outfile ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( decoder -> codec_interface <S2SV_ModEnd> ( ) ) <S2SV_ModStart> , decoder -> codec_interface <S2SV_ModEnd> ( ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_set_postproc ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> # if CONFIG_VP9_POSTPROC vp8_postproc_cfg_t * data = va_arg ( args , vp8_postproc_cfg_t * ) ; if ( data ) { ctx -> postproc_cfg_set = 1 ; ctx -> postproc_cfg = * ( ( vp8_postproc_cfg_t * ) data ) ; return VPX_CODEC_OK ; } else { return VPX_CODEC_INVALID_PARAM ; } # else <S2SV_StartBug> return VPX_CODEC_INCAPABLE ; <S2SV_EndBug> # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> } # else ( void ) ctx ; ( void ) args ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14171\n\n```\nCWE-834 static int nsv_parse_NSVf_header ( AVFormatContext * s ) { NSVContext * nsv = s -> priv_data ; AVIOContext * pb = s -> pb ; unsigned int av_unused file_size ; unsigned int size ; int64_t duration ; int strings_size ; int table_entries ; int table_entries_used ; nsv -> state = NSV_UNSYNC ; size = avio_rl32 ( pb ) ; if ( size < 28 ) return - 1 ; nsv -> NSVf_end = size ; file_size = ( uint32_t ) avio_rl32 ( pb ) ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>chunk_size<S2SV_blank>%u\\\\n\" , size ) ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>file_size<S2SV_blank>%u\\\\n\" , file_size ) ; nsv -> duration = duration = avio_rl32 ( pb ) ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>duration<S2SV_blank>%\" PRId64 \"<S2SV_blank>ms\\\\n\" , duration ) ; strings_size = avio_rl32 ( pb ) ; table_entries = avio_rl32 ( pb ) ; table_entries_used = avio_rl32 ( pb ) ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>info-strings<S2SV_blank>size:<S2SV_blank>%d,<S2SV_blank>table<S2SV_blank>entries:<S2SV_blank>%d,<S2SV_blank>bis<S2SV_blank>%d\\\\n\" , strings_size , table_entries , table_entries_used ) ; if ( avio_feof ( pb ) ) return - 1 ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>got<S2SV_blank>header;<S2SV_blank>filepos<S2SV_blank>%\" PRId64 \"\\\\n\" , avio_tell ( pb ) ) ; if ( strings_size > 0 ) { char * strings ; char * p , * endp ; char * token , * value ; char quote ; p = strings = av_mallocz ( ( size_t ) strings_size + 1 ) ; if ( ! p ) return AVERROR ( ENOMEM ) ; endp = strings + strings_size ; avio_read ( pb , strings , strings_size ) ; while ( p < endp ) { while ( * p == '<S2SV_blank>' ) p ++ ; if ( p >= endp - 2 ) break ; token = p ; p = strchr ( p , '=' ) ; if ( ! p || p >= endp - 2 ) break ; * p ++ = '\\\\0' ; quote = * p ++ ; value = p ; p = strchr ( p , quote ) ; if ( ! p || p >= endp ) break ; * p ++ = '\\\\0' ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>INFO:<S2SV_blank>%s=\\'%s\\'\\\\n\" , token , value ) ; av_dict_set ( & s -> metadata , token , value , 0 ) ; } av_free ( strings ) ; } if ( avio_feof ( pb ) ) return - 1 ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>got<S2SV_blank>infos;<S2SV_blank>filepos<S2SV_blank>%\" PRId64 \"\\\\n\" , avio_tell ( pb ) ) ; if ( table_entries_used > 0 ) { int i ; nsv -> index_entries = table_entries_used ; if ( ( unsigned ) table_entries_used >= UINT_MAX / sizeof ( uint32_t ) ) return - 1 ; nsv -> nsvs_file_offset = av_malloc_array ( ( unsigned ) table_entries_used , sizeof ( uint32_t ) ) ; if ( ! nsv -> nsvs_file_offset ) return AVERROR ( ENOMEM ) ; <S2SV_StartBug> for ( i = 0 ; i < table_entries_used ; i ++ ) <S2SV_EndBug> <S2SV_StartBug> nsv -> nsvs_file_offset [ i ] = avio_rl32 ( pb ) + size ; <S2SV_EndBug> if ( table_entries > table_entries_used && avio_rl32 ( pb ) == MKTAG ( 'T' , 'O' , 'C' , '2' ) ) { nsv -> nsvs_timestamps = av_malloc_array ( ( unsigned ) table_entries_used , sizeof ( uint32_t ) ) ; if ( ! nsv -> nsvs_timestamps ) return AVERROR ( ENOMEM ) ; for ( i = 0 ; i < table_entries_used ; i ++ ) { nsv -> nsvs_timestamps [ i ] = avio_rl32 ( pb ) ; } } } av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>got<S2SV_blank>index;<S2SV_blank>filepos<S2SV_blank>%\" PRId64 \"\\\\n\" , avio_tell ( pb ) ) ; avio_seek ( pb , nsv -> base_offset + size , SEEK_SET ) ; if ( avio_feof ( pb ) ) return - 1 ; nsv -> state = NSV_HAS_READ_NSVF ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> + size ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-755(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11472\n\n```\nCWE-755 void AcpiNsTerminate ( void ) { ACPI_STATUS Status ; <S2SV_StartBug> ACPI_FUNCTION_TRACE ( NsTerminate ) ; <S2SV_EndBug> # ifdef ACPI_EXEC_APP { ACPI_OPERAND_OBJECT * Prev ; <S2SV_StartBug> ACPI_OPERAND_OBJECT * Next ; <S2SV_EndBug> Next = AcpiGbl_ModuleCodeList ; while ( Next ) { Prev = Next ; Next = Next -> Method . Mutex ; Prev -> Method . Mutex = NULL ; AcpiUtRemoveReference ( Prev ) ; } <S2SV_StartBug> } <S2SV_EndBug> # endif AcpiNsDeleteNamespaceSubtree ( AcpiGbl_RootNode ) ; Status = AcpiUtAcquireMutex ( ACPI_MTX_NAMESPACE ) ; if ( ACPI_FAILURE ( Status ) ) { return_VOID ; } AcpiNsDeleteNode ( AcpiGbl_RootNode ) ; ( void ) AcpiUtReleaseMutex ( ACPI_MTX_NAMESPACE ) ; ACPI_DEBUG_PRINT ( ( ACPI_DB_INFO , \"Namespace<S2SV_blank>freed\\\\n\" ) ) ; return_VOID ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ACPI_STATUS Status ; <S2SV_ModEnd> ACPI_OPERAND_OBJECT * Prev <S2SV_ModStart> ACPI_OPERAND_OBJECT * Next ; ACPI_FUNCTION_TRACE ( NsTerminate ) <S2SV_ModStart> ) ; } <S2SV_ModEnd> AcpiNsDeleteNamespaceSubtree ( AcpiGbl_RootNode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t tcpAddOption ( TcpHeader * segment , uint8_t kind , const void * value , uint8_t length ) { <S2SV_StartBug> uint_t i ; <S2SV_EndBug> size_t paddingSize ; TcpOption * option ; length += sizeof ( TcpOption ) ; <S2SV_StartBug> if ( ( segment -> dataOffset * 4 + length ) > TCP_MAX_HEADER_LENGTH ) <S2SV_EndBug> return ERROR_FAILURE ; <S2SV_StartBug> i = segment -> dataOffset * 4 - sizeof ( TcpHeader ) ; <S2SV_EndBug> paddingSize = ( length % 4 ) ? 4 - ( length % 4 ) : 0 ; while ( paddingSize -- ) <S2SV_StartBug> segment -> options [ i ++ ] = TCP_OPTION_NOP ; <S2SV_EndBug> <S2SV_StartBug> option = ( TcpOption * ) ( segment -> options + i ) ; <S2SV_EndBug> option -> kind = kind ; option -> length = length ; osMemcpy ( option -> value , value , length - sizeof ( TcpOption ) ) ; i += length ; segment -> dataOffset = ( sizeof ( TcpHeader ) + i ) / 4 ; <S2SV_StartBug> return NO_ERROR ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length ) { error_t error ; size_t <S2SV_ModEnd> i ; size_t <S2SV_ModStart> + length ) <= TCP_MAX_HEADER_LENGTH ) { i = ( <S2SV_ModEnd> segment -> dataOffset <S2SV_ModStart> dataOffset * 4 ) <S2SV_ModStart> paddingSize -- ) { <S2SV_ModStart> = TCP_OPTION_NOP ; } <S2SV_ModStart> / 4 ; error = NO_ERROR ; } else { error = ERROR_FAILURE ; } return error <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8970\n\n```\nCWE-476 static int skcipher_setkey ( void * private , const u8 * key , unsigned int keylen ) { <S2SV_StartBug> return crypto_skcipher_setkey ( private , key , keylen ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> keylen ) { struct skcipher_tfm * tfm = private ; int err ; err = crypto_skcipher_setkey ( tfm -> skcipher <S2SV_ModEnd> , key , <S2SV_ModStart> keylen ) ; tfm -> has_key = ! err ; return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20079\n\n```\nCWE-416 static void win_enter_ext ( win_T * wp , int undo_sync , int curwin_invalid , int trigger_new_autocmds , int trigger_enter_autocmds , int trigger_leave_autocmds ) { int other_buffer = FALSE ; if ( wp == curwin && ! curwin_invalid ) return ; # ifdef FEAT_JOB_CHANNEL if ( ! curwin_invalid ) leaving_window ( curwin ) ; # endif if ( ! curwin_invalid && trigger_leave_autocmds ) { if ( wp -> w_buffer != curbuf ) { apply_autocmds ( EVENT_BUFLEAVE , NULL , NULL , FALSE , curbuf ) ; other_buffer = TRUE ; if ( ! win_valid ( wp ) ) return ; } apply_autocmds ( EVENT_WINLEAVE , NULL , NULL , FALSE , curbuf ) ; if ( ! win_valid ( wp ) ) return ; # ifdef FEAT_EVAL if ( aborting ( ) ) return ; # endif } if ( undo_sync && curbuf != wp -> w_buffer ) u_sync ( FALSE ) ; update_topline ( ) ; if ( wp -> w_buffer != curbuf ) buf_copy_options ( wp -> w_buffer , BCO_ENTER | BCO_NOHELP ) ; if ( ! curwin_invalid ) { prevwin = curwin ; curwin -> w_redr_status = TRUE ; } curwin = wp ; curbuf = wp -> w_buffer ; check_cursor ( ) ; if ( ! virtual_active ( ) ) curwin -> w_cursor . coladd = 0 ; changed_line_abv_curs ( ) ; if ( curwin -> w_localdir != NULL || curtab -> tp_localdir != NULL ) { char_u * dirname ; if ( globaldir == NULL ) { char_u cwd [ MAXPATHL ] ; if ( mch_dirname ( cwd , MAXPATHL ) == OK ) globaldir = vim_strsave ( cwd ) ; } if ( curwin -> w_localdir != NULL ) dirname = curwin -> w_localdir ; else dirname = curtab -> tp_localdir ; if ( mch_chdir ( ( char * ) dirname ) == 0 ) shorten_fnames ( TRUE ) ; } else if ( globaldir != NULL ) { vim_ignored = mch_chdir ( ( char * ) globaldir ) ; VIM_CLEAR ( globaldir ) ; shorten_fnames ( TRUE ) ; } # ifdef FEAT_JOB_CHANNEL entering_window ( curwin ) ; # endif if ( trigger_new_autocmds ) apply_autocmds ( EVENT_WINNEW , NULL , NULL , FALSE , curbuf ) ; if ( trigger_enter_autocmds ) { apply_autocmds ( EVENT_WINENTER , NULL , NULL , FALSE , curbuf ) ; if ( other_buffer ) apply_autocmds ( EVENT_BUFENTER , NULL , NULL , FALSE , curbuf ) ; } # ifdef FEAT_TITLE maketitle ( ) ; # endif curwin -> w_redr_status = TRUE ; # ifdef FEAT_TERMINAL <S2SV_StartBug> if ( bt_terminal ( wp -> w_buffer ) ) <S2SV_EndBug> redraw_mode = TRUE ; # endif redraw_tabline = TRUE ; if ( restart_edit ) redraw_later ( VALID ) ; if ( curwin -> w_height < p_wh && ! curwin -> w_p_wfh # ifdef FEAT_TEXT_PROP && ! popup_is_popup ( curwin ) # endif ) win_setheight ( ( int ) p_wh ) ; else if ( curwin -> w_height == 0 ) win_setheight ( 1 ) ; if ( curwin -> w_width < p_wiw && ! curwin -> w_p_wfw ) win_setwidth ( ( int ) p_wiw ) ; setmouse ( ) ; DO_AUTOCHDIR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( bt_terminal ( curwin <S2SV_ModEnd> -> w_buffer )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { DelogoContext * s = inlink -> dst -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; const AVPixFmtDescriptor * desc = av_pix_fmt_desc_get ( inlink -> format ) ; AVFrame * out ; int hsub0 = desc -> log2_chroma_w ; int vsub0 = desc -> log2_chroma_h ; int direct = 0 ; int plane ; AVRational sar ; if ( av_frame_is_writable ( in ) ) { direct = 1 ; out = in ; } else { out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; } sar = in -> sample_aspect_ratio ; if ( ! sar . num ) sar . num = sar . den = 1 ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && in -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> int hsub = plane == 1 || plane == 2 ? hsub0 : 0 ; int vsub = plane == 1 || plane == 2 ? vsub0 : 0 ; apply_delogo ( out -> data [ plane ] , out -> linesize [ plane ] , in -> data [ plane ] , in -> linesize [ plane ] , FF_CEIL_RSHIFT ( inlink -> w , hsub ) , FF_CEIL_RSHIFT ( inlink -> h , vsub ) , sar , s -> x >> hsub , s -> y >> vsub , FF_CEIL_RSHIFT ( s -> w + ( s -> x & ( ( 1 << hsub ) - 1 ) ) , hsub ) , FF_CEIL_RSHIFT ( s -> h + ( s -> y & ( ( 1 << vsub ) - 1 ) ) , vsub ) , s -> band >> FFMIN ( hsub , vsub ) , s -> show , direct ) ; } if ( ! direct ) av_frame_free ( & in ) ; return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in -> data [ plane ] && in -> linesize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void find_next_key_frame ( VP9_COMP * cpi , FIRSTPASS_STATS * this_frame ) { int i , j ; RATE_CONTROL * const rc = & cpi -> rc ; <S2SV_StartBug> struct twopass_rc * const twopass = & cpi -> twopass ; <S2SV_EndBug> const FIRSTPASS_STATS first_frame = * this_frame ; <S2SV_StartBug> const FIRSTPASS_STATS * start_position = twopass -> stats_in ; <S2SV_EndBug> FIRSTPASS_STATS next_frame ; FIRSTPASS_STATS last_frame ; <S2SV_StartBug> double decay_accumulator = 1.0 ; <S2SV_EndBug> double zero_motion_accumulator = 1.0 ; double boost_score = 0.0 ; double kf_mod_err = 0.0 ; double kf_group_err = 0.0 ; double recent_loop_decay [ 8 ] = { 1.0 , 1.0 , 1.0 , 1.0 , 1.0 , 1.0 , 1.0 , 1.0 } ; vp9_zero ( next_frame ) ; cpi -> common . frame_type = KEY_FRAME ; <S2SV_StartBug> rc -> this_key_frame_forced = rc -> next_key_frame_forced ; <S2SV_EndBug> rc -> source_alt_ref_active = 0 ; <S2SV_StartBug> rc -> frames_till_gf_update_due = 0 ; <S2SV_EndBug> rc -> frames_to_key = 1 ; twopass -> kf_group_bits = 0 ; twopass -> kf_group_error_left = 0 ; <S2SV_StartBug> kf_mod_err = calculate_modified_err ( cpi , this_frame ) ; <S2SV_EndBug> i = 0 ; <S2SV_StartBug> while ( twopass -> stats_in < twopass -> stats_in_end ) { <S2SV_EndBug> <S2SV_StartBug> kf_group_err += calculate_modified_err ( cpi , this_frame ) ; <S2SV_EndBug> last_frame = * this_frame ; input_stats ( twopass , this_frame ) ; if ( cpi -> oxcf . auto_key && <S2SV_StartBug> lookup_next_frame_stats ( twopass , & next_frame ) != EOF ) { <S2SV_EndBug> double loop_decay_rate ; <S2SV_StartBug> if ( test_candidate_kf ( twopass , & last_frame , this_frame , & next_frame ) ) <S2SV_EndBug> break ; <S2SV_StartBug> loop_decay_rate = get_prediction_decay_rate ( & cpi -> common , & next_frame ) ; <S2SV_EndBug> recent_loop_decay [ i % 8 ] = loop_decay_rate ; decay_accumulator = 1.0 ; for ( j = 0 ; j < 8 ; ++ j ) decay_accumulator *= recent_loop_decay [ j ] ; <S2SV_StartBug> if ( detect_transition_to_still ( twopass , i , cpi -> key_frame_frequency - i , <S2SV_EndBug> loop_decay_rate , decay_accumulator ) ) break ; ++ rc -> frames_to_key ; <S2SV_StartBug> if ( rc -> frames_to_key >= 2 * ( int ) cpi -> key_frame_frequency ) <S2SV_EndBug> break ; } else { ++ rc -> frames_to_key ; } ++ i ; } if ( cpi -> oxcf . auto_key && <S2SV_StartBug> rc -> frames_to_key > ( int ) cpi -> key_frame_frequency ) { <S2SV_EndBug> FIRSTPASS_STATS tmp_frame = first_frame ; rc -> frames_to_key /= 2 ; reset_fpf_position ( twopass , start_position ) ; <S2SV_StartBug> kf_group_err = 0 ; <S2SV_EndBug> for ( i = 0 ; i < rc -> frames_to_key ; ++ i ) { <S2SV_StartBug> kf_group_err += calculate_modified_err ( cpi , & tmp_frame ) ; <S2SV_EndBug> input_stats ( twopass , & tmp_frame ) ; } rc -> next_key_frame_forced = 1 ; <S2SV_StartBug> } else if ( twopass -> stats_in == twopass -> stats_in_end ) { <S2SV_EndBug> rc -> next_key_frame_forced = 1 ; } else { rc -> next_key_frame_forced = 0 ; } <S2SV_StartBug> if ( twopass -> stats_in >= twopass -> stats_in_end ) { <S2SV_EndBug> <S2SV_StartBug> kf_group_err += calculate_modified_err ( cpi , this_frame ) ; <S2SV_EndBug> } if ( twopass -> bits_left > 0 && twopass -> modified_error_left > 0.0 ) { const int max_bits = frame_max_bits ( rc , & cpi -> oxcf ) ; int64_t max_grp_bits ; twopass -> kf_group_bits = ( int64_t ) ( twopass -> bits_left * ( kf_group_err / twopass -> modified_error_left ) ) ; max_grp_bits = ( int64_t ) max_bits * ( int64_t ) rc -> frames_to_key ; if ( twopass -> kf_group_bits > max_grp_bits ) twopass -> kf_group_bits = max_grp_bits ; } else { twopass -> kf_group_bits = 0 ; } <S2SV_StartBug> reset_fpf_position ( twopass , start_position ) ; <S2SV_EndBug> decay_accumulator = 1.0 ; boost_score = 0.0 ; <S2SV_StartBug> for ( i = 0 ; i < rc -> frames_to_key ; ++ i ) { <S2SV_EndBug> if ( EOF == input_stats ( twopass , & next_frame ) ) break ; <S2SV_StartBug> if ( ( next_frame . pcnt_inter - next_frame . pcnt_motion ) < <S2SV_EndBug> zero_motion_accumulator ) { zero_motion_accumulator = ( next_frame . pcnt_inter - next_frame . pcnt_motion ) ; } <S2SV_StartBug> if ( i <= ( rc -> max_gf_interval * 2 ) ) { <S2SV_EndBug> double r ; if ( next_frame . intra_error > twopass -> kf_intra_err_min ) r = ( IIKFACTOR2 * next_frame . intra_error / DOUBLE_DIVIDE_CHECK ( next_frame . coded_error ) ) ; else r = ( IIKFACTOR2 * twopass -> kf_intra_err_min / DOUBLE_DIVIDE_CHECK ( next_frame . coded_error ) ) ; if ( r > RMAX ) r = RMAX ; if ( ! detect_flash ( twopass , 0 ) ) { <S2SV_StartBug> const double loop_decay_rate = get_prediction_decay_rate ( & cpi -> common , <S2SV_EndBug> & next_frame ) ; decay_accumulator *= loop_decay_rate ; decay_accumulator = MAX ( decay_accumulator , MIN_DECAY_FACTOR ) ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> boost_score += ( decay_accumulator * r ) ; <S2SV_EndBug> } } { FIRSTPASS_STATS sectionstats ; zero_stats ( & sectionstats ) ; reset_fpf_position ( twopass , start_position ) ; <S2SV_StartBug> for ( i = 0 ; i < rc -> frames_to_key ; ++ i ) { <S2SV_EndBug> input_stats ( twopass , & next_frame ) ; accumulate_stats ( & sectionstats , & next_frame ) ; } avg_stats ( & sectionstats ) ; <S2SV_StartBug> twopass -> section_intra_rating = ( int ) ( sectionstats . intra_error / <S2SV_EndBug> DOUBLE_DIVIDE_CHECK ( sectionstats . coded_error ) ) ; } reset_fpf_position ( twopass , start_position ) ; if ( 1 ) { int kf_boost = ( int ) boost_score ; int allocation_chunks ; if ( kf_boost < ( rc -> frames_to_key * 3 ) ) <S2SV_StartBug> kf_boost = ( rc -> frames_to_key * 3 ) ; <S2SV_EndBug> if ( kf_boost < MIN_KF_BOOST ) kf_boost = MIN_KF_BOOST ; rc -> kf_boost = kf_boost ; twopass -> kf_zeromotion_pct = ( int ) ( zero_motion_accumulator * 100.0 ) ; if ( zero_motion_accumulator >= 0.99 ) { <S2SV_StartBug> allocation_chunks = ( ( rc -> frames_to_key - 1 ) * 10 ) + kf_boost ; <S2SV_EndBug> } else { <S2SV_StartBug> allocation_chunks = ( ( rc -> frames_to_key - 1 ) * 100 ) + kf_boost ; <S2SV_EndBug> } if ( kf_boost > 1028 ) { const int divisor = kf_boost >> 10 ; kf_boost /= divisor ; allocation_chunks /= divisor ; } twopass -> kf_group_bits = MAX ( 0 , twopass -> kf_group_bits ) ; twopass -> kf_bits = ( int ) ( ( double ) kf_boost * ( ( double ) twopass -> kf_group_bits / allocation_chunks ) ) ; if ( kf_mod_err < kf_group_err / rc -> frames_to_key ) { double alt_kf_grp_bits = ( ( double ) twopass -> bits_left * ( kf_mod_err * ( double ) rc -> frames_to_key ) / DOUBLE_DIVIDE_CHECK ( twopass -> modified_error_left ) ) ; const int alt_kf_bits = ( int ) ( ( double ) kf_boost * ( alt_kf_grp_bits / ( double ) allocation_chunks ) ) ; if ( twopass -> kf_bits > alt_kf_bits ) twopass -> kf_bits = alt_kf_bits ; } else { const int alt_kf_bits = ( int ) ( ( double ) twopass -> bits_left * ( kf_mod_err / DOUBLE_DIVIDE_CHECK ( twopass -> modified_error_left ) ) ) ; if ( alt_kf_bits > twopass -> kf_bits ) twopass -> kf_bits = alt_kf_bits ; } <S2SV_StartBug> twopass -> kf_group_bits -= twopass -> kf_bits ; <S2SV_EndBug> vp9_rc_set_frame_target ( cpi , twopass -> kf_bits ) ; } twopass -> kf_group_error_left = ( int ) ( kf_group_err - kf_mod_err ) ; twopass -> modified_error_left -= kf_group_err ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rc ; TWO_PASS <S2SV_ModEnd> * const twopass <S2SV_ModStart> cpi -> twopass ; GF_GROUP * const gf_group = & twopass -> gf_group ; const VP9EncoderConfig * const oxcf = & cpi -> oxcf <S2SV_ModStart> const FIRSTPASS_STATS * const <S2SV_ModStart> FIRSTPASS_STATS last_frame ; int kf_bits = 0 ; int loop_decay_counter = 0 ; <S2SV_ModStart> decay_accumulator = 1.0 ; double av_decay_accumulator = 0.0 <S2SV_ModStart> = KEY_FRAME ; vp9_zero ( * gf_group ) ; <S2SV_ModStart> = 0 ; cpi -> multi_arf_last_grp_enabled = 0 ; <S2SV_ModStart> calculate_modified_err ( cpi , twopass , oxcf <S2SV_ModStart> twopass -> stats_in_end && rc -> frames_to_key < cpi -> oxcf . key_freq <S2SV_ModStart> ( cpi , twopass , oxcf , <S2SV_ModStart> . auto_key && twopass -> stats_in < twopass -> stats_in_end <S2SV_ModEnd> ) { double <S2SV_ModStart> , this_frame , twopass -> stats_in <S2SV_ModEnd> ) ) break <S2SV_ModStart> = get_prediction_decay_rate ( cpi , twopass -> stats_in <S2SV_ModEnd> ) ; recent_loop_decay <S2SV_ModStart> ( detect_transition_to_still ( cpi <S2SV_ModEnd> , i , <S2SV_ModStart> , cpi -> oxcf . key_freq <S2SV_ModEnd> - i , <S2SV_ModStart> >= 2 * cpi -> oxcf . key_freq <S2SV_ModEnd> ) break ; <S2SV_ModStart> -> frames_to_key > cpi -> oxcf . key_freq <S2SV_ModEnd> ) { FIRSTPASS_STATS <S2SV_ModStart> ; kf_group_err = 0.0 <S2SV_ModEnd> ; for ( <S2SV_ModStart> ( cpi , twopass , oxcf , <S2SV_ModStart> twopass -> stats_in_end || rc -> frames_to_key >= cpi -> oxcf . key_freq <S2SV_ModStart> } if ( is_two_pass_svc ( cpi ) && cpi -> svc . number_temporal_layers > 1 ) { int count = ( 1 << ( cpi -> svc . number_temporal_layers - 1 ) ) - 1 ; int new_frame_to_key = ( rc -> frames_to_key + count ) & ( ~ count ) ; int j ; for ( j = 0 ; j < new_frame_to_key - rc -> frames_to_key ; ++ j ) { if ( EOF == input_stats ( twopass , this_frame ) ) break ; <S2SV_ModEnd> kf_group_err += calculate_modified_err <S2SV_ModStart> ( cpi , twopass , oxcf , this_frame ) ; } rc -> frames_to_key = new_frame_to_key ; } if ( twopass -> stats_in >= twopass -> stats_in_end ) { kf_group_err += calculate_modified_err ( cpi , twopass , oxcf , <S2SV_ModStart> 0 ; } twopass -> kf_group_bits = MAX ( 0 , twopass -> kf_group_bits ) ; <S2SV_ModStart> ; i < ( rc -> frames_to_key - 1 ) <S2SV_ModEnd> ; ++ i <S2SV_ModStart> ) break ; zero_motion_accumulator = MIN ( zero_motion_accumulator , get_zero_motion_factor ( cpi , & next_frame ) ) ; if ( <S2SV_ModEnd> ( i <= <S2SV_ModStart> ( i <= <S2SV_ModEnd> rc -> max_gf_interval <S2SV_ModStart> rc -> max_gf_interval ) || ( ( i <= ( rc -> max_gf_interval * 4 ) ) && ( decay_accumulator > 0.5 ) ) ) { const double frame_boost = calc_frame_boost ( cpi , this_frame , 0 , KF_MAX_BOOST ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> = get_prediction_decay_rate ( cpi , <S2SV_ModEnd> & next_frame ) <S2SV_ModStart> MIN_DECAY_FACTOR ) ; av_decay_accumulator += decay_accumulator ; ++ loop_decay_counter ; <S2SV_ModStart> ( decay_accumulator * frame_boost ) ; } } av_decay_accumulator /= ( double ) loop_decay_counter <S2SV_ModEnd> ; reset_fpf_position ( <S2SV_ModStart> start_position ) ; twopass -> kf_zeromotion_pct = ( int ) ( zero_motion_accumulator * 100.0 <S2SV_ModEnd> ) ; twopass <S2SV_ModStart> -> section_intra_rating = calculate_section_intra_ratio ( start_position , twopass -> stats_in_end , rc -> frames_to_key ) ; rc -> kf_boost = <S2SV_ModStart> int ) ( av_decay_accumulator * boost_score ) ; rc -> kf_boost = MAX ( rc -> kf_boost , <S2SV_ModEnd> ( rc -> <S2SV_ModStart> 3 ) ) ; rc -> kf_boost = MAX ( rc -> kf_boost , MIN_KF_BOOST ) ; kf_bits = calculate_boost_bits <S2SV_ModEnd> ( ( rc <S2SV_ModStart> - 1 ) , rc -> kf_boost , twopass -> kf_group_bits ) ; if ( twopass -> kf_group_bits ) { twopass -> kfgroup_inter_fraction = ( double ) ( twopass -> kf_group_bits - kf_bits ) / ( double ) twopass -> kf_group_bits <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { twopass -> kfgroup_inter_fraction = 1.0 <S2SV_ModEnd> ; } twopass <S2SV_ModStart> -> kf_group_bits -= kf_bits ; gf_group -> bit_allocation [ 0 ] = kf_bits ; gf_group -> update_type [ 0 ] = KF_UPDATE ; gf_group -> rf_level [ 0 ] = KF_STD ; <S2SV_ModEnd> twopass -> kf_group_error_left <S2SV_ModStart> -= kf_group_err ; if ( oxcf -> resize_mode == RESIZE_DYNAMIC ) { cpi -> rc . next_frame_size_selector = UNSCALED ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2486\n\n```\nCWE-264 const char * string_of_NPPVariable ( int variable ) { const char * str ; switch ( variable ) { # define _ ( VAL ) case VAL : str = # VAL ; break ; _ ( NPPVpluginNameString ) ; _ ( NPPVpluginDescriptionString ) ; _ ( NPPVpluginWindowBool ) ; _ ( NPPVpluginTransparentBool ) ; _ ( NPPVjavaClass ) ; _ ( NPPVpluginWindowSize ) ; _ ( NPPVpluginTimerInterval ) ; _ ( NPPVpluginScriptableInstance ) ; _ ( NPPVpluginScriptableIID ) ; _ ( NPPVjavascriptPushCallerBool ) ; _ ( NPPVpluginKeepLibraryInMemory ) ; _ ( NPPVpluginNeedsXEmbed ) ; _ ( NPPVpluginScriptableNPObject ) ; _ ( NPPVformValue ) ; <S2SV_StartBug> # undef _ <S2SV_EndBug> default : switch ( variable & 0xff ) { # define _ ( VAL , VAR ) case VAL : str = # VAR ; break _ ( 10 , NPPVpluginScriptableInstance ) ; # undef _ default : str = \"<unknown<S2SV_blank>variable>\" ; break ; } break ; } return str ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NPPVformValue ) ; _ ( NPPVpluginUrlRequestsDisplayedBool ) ; _ ( NPPVpluginWantsAllNetworkStreams ) ; _ ( NPPVpluginNativeAccessibleAtkPlugId ) ; _ ( NPPVpluginCancelSrcStream ) ; _ ( NPPVSupportsAdvancedKeyHandling ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 <S2SV_StartBug> static inline bool unconditional ( const struct ip6t_ip6 * ipv6 ) <S2SV_EndBug> { static const struct ip6t_ip6 uncond ; <S2SV_StartBug> return memcmp ( ipv6 , & uncond , sizeof ( uncond ) ) == 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( const struct ip6t_entry * e <S2SV_ModEnd> ) { static <S2SV_ModStart> uncond ; return e -> target_offset == sizeof ( struct ip6t_entry ) && memcmp ( & e -> <S2SV_ModEnd> ipv6 , &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8687\n\n```\nCWE-119 void safe_fprintf ( FILE * f , const char * fmt , ... ) { char fmtbuff_stack [ 256 ] ; char outbuff [ 256 ] ; char * fmtbuff_heap ; char * fmtbuff ; int fmtbuff_length ; int length , n ; va_list ap ; const char * p ; unsigned i ; wchar_t wc ; char try_wc ; fmtbuff_heap = NULL ; fmtbuff_length = sizeof ( fmtbuff_stack ) ; fmtbuff = fmtbuff_stack ; va_start ( ap , fmt ) ; length = vsnprintf ( fmtbuff , fmtbuff_length , fmt , ap ) ; va_end ( ap ) ; while ( length < 0 || length >= fmtbuff_length ) { if ( length >= fmtbuff_length ) fmtbuff_length = length + 1 ; else if ( fmtbuff_length < 8192 ) fmtbuff_length *= 2 ; else if ( fmtbuff_length < 1000000 ) fmtbuff_length += fmtbuff_length / 4 ; else { length = fmtbuff_length ; fmtbuff_heap [ length - 1 ] = '\\\\0' ; break ; } free ( fmtbuff_heap ) ; fmtbuff_heap = malloc ( fmtbuff_length ) ; if ( fmtbuff_heap != NULL ) { fmtbuff = fmtbuff_heap ; va_start ( ap , fmt ) ; length = vsnprintf ( fmtbuff , fmtbuff_length , fmt , ap ) ; va_end ( ap ) ; } else { length = sizeof ( fmtbuff_stack ) - 1 ; break ; } } if ( mbtowc ( NULL , NULL , 1 ) == - 1 ) { free ( fmtbuff_heap ) ; return ; } p = fmtbuff ; i = 0 ; try_wc = 1 ; while ( * p != '\\\\0' ) { if ( try_wc && ( n = mbtowc ( & wc , p , length ) ) != - 1 ) { length -= n ; if ( iswprint ( wc ) && wc != L'\\\\\\\\' ) { while ( n -- > 0 ) outbuff [ i ++ ] = * p ++ ; } else { while ( n -- > 0 ) i += ( unsigned ) bsdtar_expand_char ( outbuff , i , * p ++ ) ; } } else { i += ( unsigned ) bsdtar_expand_char ( outbuff , i , * p ++ ) ; try_wc = 0 ; } <S2SV_StartBug> if ( i > ( sizeof ( outbuff ) - 20 ) ) { <S2SV_EndBug> outbuff [ i ] = '\\\\0' ; fprintf ( f , \"%s\" , outbuff ) ; i = 0 ; } } outbuff [ i ] = '\\\\0' ; fprintf ( f , \"%s\" , outbuff ) ; free ( fmtbuff_heap ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> outbuff ) - 128 <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13217\n\n```\nCWE-119 static int lookup1_values ( int entries , int dim ) { int r = ( int ) floor ( exp ( ( float ) log ( ( float ) entries ) / dim ) ) ; if ( ( int ) floor ( pow ( ( float ) r + 1 , dim ) ) <= entries ) ++ r ; <S2SV_StartBug> assert ( pow ( ( float ) r + 1 , dim ) > entries ) ; <S2SV_EndBug> <S2SV_StartBug> assert ( ( int ) floor ( pow ( ( float ) r , dim ) ) <= entries ) ; <S2SV_EndBug> return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ r ; if <S2SV_ModEnd> ( pow ( <S2SV_ModStart> , dim ) <= entries ) return - 1 ; if <S2SV_ModEnd> ( ( int <S2SV_ModStart> dim ) ) > entries ) return - 1 <S2SV_ModEnd> ; return r\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2206\n\n```\nCWE-000 sctp_disposition_t sctp_sf_do_5_2_4_dupcook ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { sctp_disposition_t retval ; struct sctp_chunk * chunk = arg ; struct sctp_association * new_asoc ; int error = 0 ; char action ; struct sctp_chunk * err_chk_p ; if ( ! sctp_chunk_length_valid ( chunk , sizeof ( sctp_chunkhdr_t ) ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; chunk -> subh . cookie_hdr = ( struct sctp_signed_cookie * ) chunk -> skb -> data ; if ( ! pskb_pull ( chunk -> skb , ntohs ( chunk -> chunk_hdr -> length ) - sizeof ( sctp_chunkhdr_t ) ) ) goto nomem ; new_asoc = sctp_unpack_cookie ( ep , asoc , chunk , GFP_ATOMIC , & error , & err_chk_p ) ; if ( ! new_asoc ) { switch ( error ) { case - SCTP_IERROR_NOMEM : goto nomem ; case - SCTP_IERROR_STALE_COOKIE : sctp_send_stale_cookie_err ( net , ep , asoc , chunk , commands , err_chk_p ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; case - SCTP_IERROR_BAD_SIG : default : return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } } action = sctp_tietags_compare ( new_asoc , asoc ) ; switch ( action ) { case 'A' : retval = sctp_sf_do_dupcook_a ( net , ep , asoc , chunk , commands , new_asoc ) ; break ; case 'B' : retval = sctp_sf_do_dupcook_b ( net , ep , asoc , chunk , commands , new_asoc ) ; break ; case 'C' : retval = sctp_sf_do_dupcook_c ( net , ep , asoc , chunk , commands , new_asoc ) ; break ; case 'D' : retval = sctp_sf_do_dupcook_d ( net , ep , asoc , chunk , commands , new_asoc ) ; break ; default : retval = sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; break ; } <S2SV_StartBug> sctp_add_cmd_sf ( commands , SCTP_CMD_NEW_ASOC , SCTP_ASOC ( new_asoc ) ) ; <S2SV_EndBug> sctp_add_cmd_sf ( commands , SCTP_CMD_DELETE_TCB , SCTP_NULL ( ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_SET_ASOC , SCTP_ASOC ( ( struct sctp_association * ) asoc ) ) ; return retval ; nomem : return SCTP_DISPOSITION_NOMEM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( commands , SCTP_CMD_SET_ASOC <S2SV_ModEnd> , SCTP_ASOC (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11089\n\n```\nCWE-125 int nego_recv ( rdpTransport * transport , wStream * s , void * extra ) { BYTE li ; BYTE type ; UINT16 length ; rdpNego * nego = ( rdpNego * ) extra ; if ( ! tpkt_read_header ( s , & length ) ) return - 1 ; if ( ! tpdu_read_connection_confirm ( s , & li , length ) ) return - 1 ; if ( li > 6 ) { Stream_Read_UINT8 ( s , type ) ; switch ( type ) { case TYPE_RDP_NEG_RSP : <S2SV_StartBug> nego_process_negotiation_response ( nego , s ) ; <S2SV_EndBug> WLog_DBG ( TAG , \"selected_protocol:<S2SV_blank>%\" PRIu32 \"\" , nego -> SelectedProtocol ) ; if ( nego -> SelectedProtocol ) { if ( ( nego -> SelectedProtocol == PROTOCOL_HYBRID ) && ( ! nego -> EnabledProtocols [ PROTOCOL_HYBRID ] ) ) { nego -> state = NEGO_STATE_FAIL ; } if ( ( nego -> SelectedProtocol == PROTOCOL_SSL ) && ( ! nego -> EnabledProtocols [ PROTOCOL_SSL ] ) ) { nego -> state = NEGO_STATE_FAIL ; } } else if ( ! nego -> EnabledProtocols [ PROTOCOL_RDP ] ) { nego -> state = NEGO_STATE_FAIL ; } break ; case TYPE_RDP_NEG_FAILURE : <S2SV_StartBug> nego_process_negotiation_failure ( nego , s ) ; <S2SV_EndBug> break ; } } else if ( li == 6 ) { WLog_DBG ( TAG , \"no<S2SV_blank>rdpNegData\" ) ; if ( ! nego -> EnabledProtocols [ PROTOCOL_RDP ] ) nego -> state = NEGO_STATE_FAIL ; else nego -> state = NEGO_STATE_FINAL ; } else { WLog_ERR ( TAG , \"invalid<S2SV_blank>negotiation<S2SV_blank>response\" ) ; nego -> state = NEGO_STATE_FAIL ; } if ( ! tpkt_ensure_stream_consumed ( s , length ) ) return - 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case TYPE_RDP_NEG_RSP : if ( ! <S2SV_ModStart> , s ) ) return - 1 <S2SV_ModStart> case TYPE_RDP_NEG_FAILURE : if ( ! <S2SV_ModStart> , s ) ) return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void swap_block_ptr ( MACROBLOCK * x , PICK_MODE_CONTEXT * ctx , <S2SV_StartBug> int max_plane ) { <S2SV_EndBug> <S2SV_StartBug> struct macroblock_plane * const p = x -> plane ; <S2SV_EndBug> <S2SV_StartBug> struct macroblockd_plane * const pd = x -> e_mbd . plane ; <S2SV_EndBug> int i ; for ( i = 0 ; i < max_plane ; ++ i ) { <S2SV_StartBug> p [ i ] . coeff = ctx -> coeff_pbuf [ i ] [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> p [ i ] . qcoeff = ctx -> qcoeff_pbuf [ i ] [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> pd [ i ] . dqcoeff = ctx -> dqcoeff_pbuf [ i ] [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> p [ i ] . eobs = ctx -> eobs_pbuf [ i ] [ 1 ] ; <S2SV_EndBug> ctx -> coeff_pbuf [ i ] [ 1 ] = ctx -> coeff_pbuf [ i ] [ 0 ] ; ctx -> qcoeff_pbuf [ i ] [ 1 ] = ctx -> qcoeff_pbuf [ i ] [ 0 ] ; ctx -> dqcoeff_pbuf [ i ] [ 1 ] = ctx -> dqcoeff_pbuf [ i ] [ 0 ] ; ctx -> eobs_pbuf [ i ] [ 1 ] = ctx -> eobs_pbuf [ i ] [ 0 ] ; ctx -> coeff_pbuf [ i ] [ 0 ] = p [ i ] . coeff ; <S2SV_StartBug> ctx -> qcoeff_pbuf [ i ] [ 0 ] = p [ i ] . qcoeff ; <S2SV_EndBug> <S2SV_StartBug> ctx -> dqcoeff_pbuf [ i ] [ 0 ] = pd [ i ] . dqcoeff ; <S2SV_EndBug> <S2SV_StartBug> ctx -> eobs_pbuf [ i ] [ 0 ] = p [ i ] . eobs ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx , int m , int n , int min_plane , int <S2SV_ModStart> max_plane ) { int i ; for ( i = min_plane ; i < max_plane ; ++ i ) { <S2SV_ModStart> const p = & <S2SV_ModStart> x -> plane [ i ] <S2SV_ModStart> const pd = & <S2SV_ModStart> e_mbd . plane [ i ] ; p -> <S2SV_ModEnd> coeff = ctx <S2SV_ModStart> i ] [ m ] ; p -> <S2SV_ModEnd> qcoeff = ctx <S2SV_ModStart> i ] [ m <S2SV_ModEnd> ] ; pd <S2SV_ModStart> ] ; pd -> <S2SV_ModEnd> dqcoeff = ctx <S2SV_ModStart> i ] [ m ] ; p -> <S2SV_ModEnd> eobs = ctx <S2SV_ModStart> i ] [ m ] ; ctx -> coeff_pbuf [ i ] [ m ] = ctx -> coeff_pbuf [ i ] [ n ] ; ctx -> qcoeff_pbuf [ i ] [ m ] = ctx -> qcoeff_pbuf [ i ] [ n ] ; ctx -> dqcoeff_pbuf [ i ] [ m ] = ctx -> dqcoeff_pbuf [ i ] [ n ] ; ctx -> eobs_pbuf [ i ] [ m ] = ctx -> eobs_pbuf [ i ] [ n ] ; ctx -> coeff_pbuf [ i ] [ n ] = p -> <S2SV_ModEnd> coeff ; ctx <S2SV_ModStart> i ] [ n ] = p -> <S2SV_ModEnd> qcoeff ; ctx <S2SV_ModStart> i ] [ n <S2SV_ModEnd> ] = pd <S2SV_ModStart> ] = pd -> <S2SV_ModEnd> dqcoeff ; ctx <S2SV_ModStart> i ] [ n ] = p -> <S2SV_ModEnd> eobs ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15148\n\n```\nCWE-787 size_t OpenMP4Source ( char * filename , uint32_t traktype , uint32_t traksubtype ) { mp4object * mp4 = ( mp4object * ) malloc ( sizeof ( mp4object ) ) ; if ( mp4 == NULL ) return 0 ; <S2SV_StartBug> memset ( mp4 , 0 , sizeof ( mp4object ) ) ; <S2SV_EndBug> # ifdef _WINDOWS fopen_s ( & mp4 -> mediafp , filename , \"rb\" ) ; # else mp4 -> mediafp = fopen ( filename , \"rb\" ) ; # endif if ( mp4 -> mediafp ) { uint32_t qttag , qtsize32 , skip , type = 0 , subtype = 0 , num ; size_t len ; int32_t nest = 0 ; uint64_t nestsize [ MAX_NEST_LEVEL ] = { 0 } ; uint64_t lastsize = 0 , qtsize ; do { len = fread ( & qtsize32 , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & qttag , 1 , 4 , mp4 -> mediafp ) ; <S2SV_StartBug> if ( len == 8 ) <S2SV_EndBug> { if ( ! VALID_FOURCC ( qttag ) ) { <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , lastsize - 8 - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( lastsize - 8 ) ; continue ; } qtsize32 = BYTESWAP32 ( qtsize32 ) ; if ( qtsize32 == 1 ) { <S2SV_StartBug> fread ( & qtsize , 1 , 8 , mp4 -> mediafp ) ; <S2SV_EndBug> qtsize = BYTESWAP64 ( qtsize ) - 8 ; } else qtsize = qtsize32 ; nest ++ ; if ( qtsize < 8 ) break ; if ( nest >= MAX_NEST_LEVEL ) break ; nestsize [ nest ] = qtsize ; lastsize = qtsize ; # if PRINT_MP4_STRUCTURE for ( int i = 1 ; i < nest ; i ++ ) printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; printf ( \"%c%c%c%c<S2SV_blank>(%lld)\\\\n\" , ( qttag & 0xff ) , ( ( qttag >> 8 ) & 0xff ) , ( ( qttag >> 16 ) & 0xff ) , ( ( qttag >> 24 ) & 0xff ) , qtsize ) ; if ( qttag == MAKEID ( 'm' , 'd' , 'a' , 't' ) || qttag == MAKEID ( 'f' , 't' , 'y' , 'p' ) || <S2SV_StartBug> qttag == MAKEID ( 'u' , 'd' , 't' , 'a' ) ) <S2SV_EndBug> { <S2SV_StartBug> LONGSEEK ( mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; continue ; } # else if ( qttag != MAKEID ( 'm' , 'o' , 'o' , 'v' ) && qttag != MAKEID ( 'm' , 'v' , 'h' , 'd' ) && qttag != MAKEID ( 't' , 'r' , 'a' , 'k' ) && qttag != MAKEID ( 'm' , 'd' , 'i' , 'a' ) && qttag != MAKEID ( 'm' , 'd' , 'h' , 'd' ) && qttag != MAKEID ( 'm' , 'i' , 'n' , 'f' ) && qttag != MAKEID ( 'g' , 'm' , 'i' , 'n' ) && qttag != MAKEID ( 'd' , 'i' , 'n' , 'f' ) && qttag != MAKEID ( 'a' , 'l' , 'i' , 's' ) && qttag != MAKEID ( 's' , 't' , 's' , 'd' ) && <S2SV_StartBug> qttag != MAKEID ( 'a' , 'l' , 'i' , 's' ) && <S2SV_EndBug> <S2SV_StartBug> qttag != MAKEID ( 'a' , 'l' , 'i' , 's' ) && <S2SV_EndBug> <S2SV_StartBug> qttag != MAKEID ( 's' , 't' , 'b' , 'l' ) && <S2SV_EndBug> <S2SV_StartBug> qttag != MAKEID ( 's' , 't' , 't' , 's' ) && <S2SV_EndBug> <S2SV_StartBug> qttag != MAKEID ( 's' , 't' , 's' , 'c' ) && <S2SV_EndBug> <S2SV_StartBug> qttag != MAKEID ( 's' , 't' , 's' , 'z' ) && <S2SV_EndBug> <S2SV_StartBug> qttag != MAKEID ( 's' , 't' , 'c' , 'o' ) && <S2SV_EndBug> qttag != MAKEID ( 'c' , 'o' , '6' , '4' ) && qttag != MAKEID ( 'h' , 'd' , 'l' , 'r' ) ) { <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else # endif if ( qttag == MAKEID ( 'm' , 'v' , 'h' , 'd' ) ) { len = fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & mp4 -> clockdemon , 1 , 4 , mp4 -> mediafp ) ; mp4 -> clockdemon = BYTESWAP32 ( mp4 -> clockdemon ) ; len += fread ( & mp4 -> clockcount , 1 , 4 , mp4 -> mediafp ) ; mp4 -> clockcount = BYTESWAP32 ( mp4 -> clockcount ) ; <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else if ( qttag == MAKEID ( 'm' , 'd' , 'h' , 'd' ) ) { media_header md ; len = fread ( & md , 1 , sizeof ( md ) , mp4 -> mediafp ) ; if ( len == sizeof ( md ) ) { md . creation_time = BYTESWAP32 ( md . creation_time ) ; md . modification_time = BYTESWAP32 ( md . modification_time ) ; md . time_scale = BYTESWAP32 ( md . time_scale ) ; md . duration = BYTESWAP32 ( md . duration ) ; mp4 -> trak_clockdemon = md . time_scale ; mp4 -> trak_clockcount = md . duration ; if ( mp4 -> videolength == 0.0 ) { mp4 -> videolength = ( float ) ( ( double ) mp4 -> trak_clockcount / ( double ) mp4 -> trak_clockdemon ) ; } } <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else if ( qttag == MAKEID ( 'h' , 'd' , 'l' , 'r' ) ) { uint32_t temp ; len = fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & temp , 1 , 4 , mp4 -> mediafp ) ; <S2SV_StartBug> if ( temp != MAKEID ( 'a' , 'l' , 'i' , 's' ) ) <S2SV_EndBug> type = temp ; <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else if ( qttag == MAKEID ( 's' , 't' , 's' , 'd' ) ) { if ( type == traktype ) { len = fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & subtype , 1 , 4 , mp4 -> mediafp ) ; if ( len == 16 ) { if ( subtype != traksubtype ) { type = 0 ; } } <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> } else <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else if ( qttag == MAKEID ( 's' , 't' , 's' , 'c' ) ) { if ( type == traktype ) { len = fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & num , 1 , 4 , mp4 -> mediafp ) ; num = BYTESWAP32 ( num ) ; if ( num * 12 <= qtsize - 8 - len ) { mp4 -> metastsc_count = num ; if ( mp4 -> metastsc ) free ( mp4 -> metastsc ) ; <S2SV_StartBug> mp4 -> metastsc = ( SampleToChunk * ) malloc ( num * 12 ) ; <S2SV_EndBug> if ( mp4 -> metastsc ) { <S2SV_StartBug> uint32_t total_stsc = num ; <S2SV_EndBug> len += fread ( mp4 -> metastsc , 1 , num * sizeof ( SampleToChunk ) , mp4 -> mediafp ) ; do { num -- ; mp4 -> metastsc [ num ] . chunk_num = BYTESWAP32 ( mp4 -> metastsc [ num ] . chunk_num ) ; mp4 -> metastsc [ num ] . samples = BYTESWAP32 ( mp4 -> metastsc [ num ] . samples ) ; mp4 -> metastsc [ num ] . id = BYTESWAP32 ( mp4 -> metastsc [ num ] . id ) ; } while ( num > 0 ) ; } <S2SV_StartBug> if ( mp4 -> metastsc_count == 1 && mp4 -> metastsc [ 0 ] . samples == 1 ) <S2SV_EndBug> { if ( mp4 -> metastsc ) free ( mp4 -> metastsc ) ; mp4 -> metastsc = NULL ; <S2SV_StartBug> mp4 -> metastsc_count = 0 ; <S2SV_EndBug> } } <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> } else <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else if ( qttag == MAKEID ( 's' , 't' , 's' , 'z' ) ) { if ( type == traktype ) { uint32_t equalsamplesize ; len = fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & equalsamplesize , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & num , 1 , 4 , mp4 -> mediafp ) ; num = BYTESWAP32 ( num ) ; if ( num * 4 <= qtsize - 8 - len ) { mp4 -> metasize_count = num ; if ( mp4 -> metasizes ) free ( mp4 -> metasizes ) ; <S2SV_StartBug> mp4 -> metasizes = ( uint32_t * ) malloc ( num * 4 ) ; <S2SV_EndBug> if ( mp4 -> metasizes ) { if ( equalsamplesize == 0 ) { len += fread ( mp4 -> metasizes , 1 , num * 4 , mp4 -> mediafp ) ; do { num -- ; mp4 -> metasizes [ num ] = BYTESWAP32 ( mp4 -> metasizes [ num ] ) ; } while ( num > 0 ) ; } else { equalsamplesize = BYTESWAP32 ( equalsamplesize ) ; do { num -- ; mp4 -> metasizes [ num ] = equalsamplesize ; } while ( num > 0 ) ; } } } <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> } else <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else if ( qttag == MAKEID ( 's' , 't' , 'c' , 'o' ) ) { if ( type == traktype ) { len = fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & num , 1 , 4 , mp4 -> mediafp ) ; num = BYTESWAP32 ( num ) ; if ( num * 4 <= qtsize - 8 - len ) { <S2SV_StartBug> if ( mp4 -> metastsc_count > 0 && num != mp4 -> metasize_count ) <S2SV_EndBug> { <S2SV_StartBug> mp4 -> indexcount = mp4 -> metasize_count ; <S2SV_EndBug> <S2SV_StartBug> if ( mp4 -> metaoffsets ) free ( mp4 -> metaoffsets ) ; <S2SV_EndBug> <S2SV_StartBug> mp4 -> metaoffsets = ( uint64_t * ) malloc ( mp4 -> metasize_count * 8 ) ; <S2SV_EndBug> if ( mp4 -> metaoffsets ) { uint32_t * metaoffsets32 = NULL ; metaoffsets32 = ( uint32_t * ) malloc ( num * 4 ) ; if ( metaoffsets32 ) { uint64_t fileoffset = 0 ; int stsc_pos = 0 ; int stco_pos = 0 ; int repeat = 1 ; len += fread ( metaoffsets32 , 1 , num * 4 , mp4 -> mediafp ) ; do { num -- ; metaoffsets32 [ num ] = BYTESWAP32 ( metaoffsets32 [ num ] ) ; } while ( num > 0 ) ; mp4 -> metaoffsets [ 0 ] = fileoffset = metaoffsets32 [ stco_pos ] ; num = 1 ; <S2SV_StartBug> while ( num < mp4 -> metasize_count ) <S2SV_EndBug> { if ( stsc_pos + 1 < ( int ) mp4 -> metastsc_count && num == stsc_pos ) { stco_pos ++ ; stsc_pos ++ ; fileoffset = ( uint64_t ) metaoffsets32 [ stco_pos ] ; repeat = 1 ; } else if ( repeat == mp4 -> metastsc [ stsc_pos ] . samples ) { <S2SV_StartBug> stco_pos ++ ; <S2SV_EndBug> fileoffset = ( uint64_t ) metaoffsets32 [ stco_pos ] ; <S2SV_StartBug> repeat = 1 ; <S2SV_EndBug> } else { fileoffset += ( uint64_t ) mp4 -> metasizes [ num - 1 ] ; <S2SV_StartBug> repeat ++ ; <S2SV_EndBug> } mp4 -> metaoffsets [ num ] = fileoffset ; num ++ ; } if ( mp4 -> metastsc ) free ( mp4 -> metastsc ) ; mp4 -> metastsc = NULL ; mp4 -> metastsc_count = 0 ; free ( metaoffsets32 ) ; } } } else { <S2SV_StartBug> mp4 -> indexcount = num ; <S2SV_EndBug> <S2SV_StartBug> if ( mp4 -> metaoffsets ) free ( mp4 -> metaoffsets ) ; <S2SV_EndBug> mp4 -> metaoffsets = ( uint64_t * ) malloc ( num * 8 ) ; if ( mp4 -> metaoffsets ) { uint32_t * metaoffsets32 = NULL ; metaoffsets32 = ( uint32_t * ) malloc ( num * 4 ) ; if ( metaoffsets32 ) { size_t readlen = fread ( metaoffsets32 , 1 , num * 4 , mp4 -> mediafp ) ; len += readlen ; do { num -- ; mp4 -> metaoffsets [ num ] = BYTESWAP32 ( metaoffsets32 [ num ] ) ; } while ( num > 0 ) ; free ( metaoffsets32 ) ; } } } <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> } else <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else if ( qttag == MAKEID ( 'c' , 'o' , '6' , '4' ) ) { if ( type == traktype ) { len = fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & num , 1 , 4 , mp4 -> mediafp ) ; num = BYTESWAP32 ( num ) ; <S2SV_StartBug> if ( num * 8 <= qtsize - 8 - len ) <S2SV_EndBug> { if ( mp4 -> metastsc_count > 0 && num != mp4 -> metasize_count ) { mp4 -> indexcount = mp4 -> metasize_count ; <S2SV_StartBug> if ( mp4 -> metaoffsets ) free ( mp4 -> metaoffsets ) ; <S2SV_EndBug> mp4 -> metaoffsets = ( uint64_t * ) malloc ( mp4 -> metasize_count * 8 ) ; if ( mp4 -> metaoffsets ) { uint64_t * metaoffsets64 = NULL ; metaoffsets64 = ( uint64_t * ) malloc ( num * 8 ) ; if ( metaoffsets64 ) { uint64_t fileoffset = 0 ; int stsc_pos = 0 ; int stco_pos = 0 ; len += fread ( metaoffsets64 , 1 , num * 8 , mp4 -> mediafp ) ; do { num -- ; metaoffsets64 [ num ] = BYTESWAP64 ( metaoffsets64 [ num ] ) ; } while ( num > 0 ) ; fileoffset = metaoffsets64 [ 0 ] ; mp4 -> metaoffsets [ 0 ] = fileoffset ; num = 1 ; while ( num < mp4 -> metasize_count ) { if ( num != mp4 -> metastsc [ stsc_pos ] . chunk_num - 1 && 0 == ( num - ( mp4 -> metastsc [ stsc_pos ] . chunk_num - 1 ) ) % mp4 -> metastsc [ stsc_pos ] . samples ) { stco_pos ++ ; fileoffset = ( uint64_t ) metaoffsets64 [ stco_pos ] ; } else { fileoffset += ( uint64_t ) mp4 -> metasizes [ num - 1 ] ; } mp4 -> metaoffsets [ num ] = fileoffset ; num ++ ; } if ( mp4 -> metastsc ) free ( mp4 -> metastsc ) ; mp4 -> metastsc = NULL ; mp4 -> metastsc_count = 0 ; free ( metaoffsets64 ) ; } } } else { <S2SV_StartBug> mp4 -> indexcount = num ; <S2SV_EndBug> if ( mp4 -> metaoffsets ) free ( mp4 -> metaoffsets ) ; mp4 -> metaoffsets = ( uint64_t * ) malloc ( num * 8 ) ; if ( mp4 -> metaoffsets ) { len += fread ( mp4 -> metaoffsets , 1 , num * 8 , mp4 -> mediafp ) ; do { num -- ; mp4 -> metaoffsets [ num ] = BYTESWAP64 ( mp4 -> metaoffsets [ num ] ) ; } while ( num > 0 ) ; } } } <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> } else <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else if ( qttag == MAKEID ( 's' , 't' , 't' , 's' ) ) { if ( type == traktype ) { uint32_t totaldur = 0 , samples = 0 ; int32_t entries = 0 ; len = fread ( & skip , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & num , 1 , 4 , mp4 -> mediafp ) ; num = BYTESWAP32 ( num ) ; if ( num * 8 <= qtsize - 8 - len ) { entries = num ; mp4 -> meta_clockdemon = mp4 -> trak_clockdemon ; mp4 -> meta_clockcount = mp4 -> trak_clockcount ; while ( entries > 0 ) { int32_t samplecount ; int32_t duration ; len += fread ( & samplecount , 1 , 4 , mp4 -> mediafp ) ; samplecount = BYTESWAP32 ( samplecount ) ; len += fread ( & duration , 1 , 4 , mp4 -> mediafp ) ; duration = BYTESWAP32 ( duration ) ; samples += samplecount ; entries -- ; totaldur += duration ; mp4 -> metadatalength += ( double ) ( ( double ) samplecount * ( double ) duration / ( double ) mp4 -> meta_clockdemon ) ; } mp4 -> basemetadataduration = mp4 -> metadatalength * ( double ) mp4 -> meta_clockdemon / ( double ) samples ; } <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 - len , SEEK_CUR ) ; <S2SV_EndBug> } else <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; } else { NESTSIZE ( 8 ) ; } } else { break ; } } while ( len > 0 ) ; <S2SV_StartBug> } <S2SV_EndBug> else { free ( mp4 ) ; mp4 = NULL ; } return ( size_t ) mp4 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mp4object ) ) ; struct stat64 mp4stat ; stat64 ( filename , & mp4stat ) ; mp4 -> filesize = mp4stat . st_size ; if ( mp4 -> filesize < 64 ) return 0 <S2SV_ModStart> mediafp ) ; mp4 -> filepos += len ; <S2SV_ModStart> len == 8 && mp4 -> filepos < mp4 -> filesize <S2SV_ModStart> ) ) { CloseSource ( ( size_t ) mp4 ) ; mp4 = NULL ; break <S2SV_ModEnd> ; } qtsize32 <S2SV_ModStart> 1 ) { len = <S2SV_ModStart> -> mediafp ) ; mp4 -> filepos += len <S2SV_ModStart> , 'a' ) || qttag == MAKEID ( 'f' , 'r' , 'e' , 'e' ) ) { LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> != MAKEID ( 's' , 't' , 'b' , 'l' <S2SV_ModEnd> ) && qttag <S2SV_ModStart> != MAKEID ( 's' , 't' , 't' <S2SV_ModEnd> , 's' ) <S2SV_ModStart> , 't' , 's' , 'c' <S2SV_ModEnd> ) && qttag <S2SV_ModStart> , 't' , 's' , 'z' <S2SV_ModEnd> ) && qttag <S2SV_ModStart> , 't' , 'c' , 'o' <S2SV_ModEnd> ) && qttag <S2SV_ModStart> != MAKEID ( 'c' , 'o' , '6' , '4' <S2SV_ModEnd> ) && qttag <S2SV_ModStart> != MAKEID ( <S2SV_ModEnd> 'h' , 'd' <S2SV_ModStart> ) ) { LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> clockcount ) ; mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> ; } } mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> , 's' ) && temp != MAKEID ( 'u' , 'r' , 'l' , '<S2SV_blank>' ) <S2SV_ModStart> = temp ; mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> ; } } mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; } else LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> metastsc ) ; if ( num > 0 ) { <S2SV_ModStart> ( num * sizeof ( SampleToChunk ) <S2SV_ModEnd> ) ; if <S2SV_ModStart> metastsc ) { <S2SV_ModEnd> len += fread <S2SV_ModStart> ) ; } } else { CloseSource ( ( size_t ) mp4 ) ; mp4 <S2SV_ModEnd> = NULL ; <S2SV_ModStart> = NULL ; break ; } } mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; } else LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> metasizes ) ; if ( num > 0 ) { <S2SV_ModStart> } } } else { CloseSource ( ( size_t ) mp4 ) ; mp4 = NULL ; break ; } } mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; } else LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> len ) { uint32_t metastco_count = num ; <S2SV_ModStart> -> indexcount = num <S2SV_ModEnd> ; if ( <S2SV_ModStart> metaoffsets ) ; if ( num > 0 ) { <S2SV_ModStart> ) malloc ( num <S2SV_ModEnd> * 8 ) <S2SV_ModStart> < mp4 -> indexcount ) { if ( ( uint32_t ) <S2SV_ModEnd> repeat == mp4 <S2SV_ModStart> samples ) { if ( ( uint32_t ) stco_pos + 1 < metastco_count ) { <S2SV_ModStart> stco_pos ] ; <S2SV_ModEnd> } else { <S2SV_ModStart> 1 ] ; } if ( ( uint32_t ) stsc_pos + 1 < mp4 -> metastsc_count ) if ( mp4 -> metastsc [ stsc_pos + 1 ] . chunk_num == ( uint32_t ) stco_pos + 1 ) stsc_pos ++ ; repeat = 1 ; } else { fileoffset += ( uint64_t ) mp4 -> metasizes [ num - 1 ] ; <S2SV_ModStart> } else { CloseSource ( ( size_t ) mp4 ) ; mp4 = NULL ; break ; } } else { <S2SV_ModStart> metaoffsets ) ; if ( num > 0 ) { <S2SV_ModStart> } } } else { CloseSource ( ( size_t ) mp4 ) ; mp4 = NULL ; break ; } } } mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; } else LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> if ( num == 0 ) { CloseSource ( ( size_t ) mp4 ) ; mp4 = NULL ; break ; } if ( num <S2SV_ModStart> metaoffsets ) ; if ( mp4 -> metasize_count ) { <S2SV_ModStart> } else { CloseSource ( ( size_t ) mp4 ) ; mp4 = NULL ; break ; } } else { <S2SV_ModStart> } } } mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; } else LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> samples ; } mp4 -> filepos += len ; LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> 8 - len <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; } else LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> 0 ) ; if ( mp4 ) { if ( mp4 -> metasizes == NULL || mp4 -> metaoffsets == NULL ) { CloseSource ( ( size_t ) mp4 ) ; mp4 = NULL ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7024\n\n```\nCWE-119 static int jpeg2000_decode_tile ( Jpeg2000DecoderContext * s , Jpeg2000Tile * tile , AVFrame * picture ) { int compno , reslevelno , bandno ; int x , y ; uint8_t * line ; Jpeg2000T1Context t1 ; for ( compno = 0 ; compno < s -> ncomponents ; compno ++ ) { Jpeg2000Component * comp = tile -> comp + compno ; Jpeg2000CodingStyle * codsty = tile -> codsty + compno ; for ( reslevelno = 0 ; reslevelno < codsty -> nreslevels2decode ; reslevelno ++ ) { Jpeg2000ResLevel * rlevel = comp -> reslevel + reslevelno ; for ( bandno = 0 ; bandno < rlevel -> nbands ; bandno ++ ) { int nb_precincts , precno ; Jpeg2000Band * band = rlevel -> band + bandno ; int cblkno = 0 , bandpos ; bandpos = bandno + ( reslevelno > 0 ) ; if ( band -> coord [ 0 ] [ 0 ] == band -> coord [ 0 ] [ 1 ] || band -> coord [ 1 ] [ 0 ] == band -> coord [ 1 ] [ 1 ] ) continue ; nb_precincts = rlevel -> num_precincts_x * rlevel -> num_precincts_y ; for ( precno = 0 ; precno < nb_precincts ; precno ++ ) { Jpeg2000Prec * prec = band -> prec + precno ; for ( cblkno = 0 ; cblkno < prec -> nb_codeblocks_width * prec -> nb_codeblocks_height ; cblkno ++ ) { int x , y ; Jpeg2000Cblk * cblk = prec -> cblk + cblkno ; decode_cblk ( s , codsty , & t1 , cblk , cblk -> coord [ 0 ] [ 1 ] - cblk -> coord [ 0 ] [ 0 ] , cblk -> coord [ 1 ] [ 1 ] - cblk -> coord [ 1 ] [ 0 ] , bandpos ) ; x = cblk -> coord [ 0 ] [ 0 ] ; y = cblk -> coord [ 1 ] [ 0 ] ; if ( codsty -> transform == FF_DWT97 ) dequantization_float ( x , y , cblk , comp , & t1 , band ) ; else dequantization_int ( x , y , cblk , comp , & t1 , band ) ; } } } } ff_dwt_decode ( & comp -> dwt , codsty -> transform == FF_DWT97 ? ( void * ) comp -> f_data : ( void * ) comp -> i_data ) ; } if ( tile -> codsty [ 0 ] . mct ) mct_decode ( s , tile ) ; if ( s -> cdef [ 0 ] < 0 ) { for ( x = 0 ; x < s -> ncomponents ; x ++ ) s -> cdef [ x ] = x + 1 ; if ( ( s -> ncomponents & 1 ) == 0 ) s -> cdef [ s -> ncomponents - 1 ] = 0 ; } if ( s -> precision <= 8 ) { for ( compno = 0 ; compno < s -> ncomponents ; compno ++ ) { Jpeg2000Component * comp = tile -> comp + compno ; Jpeg2000CodingStyle * codsty = tile -> codsty + compno ; float * datap = comp -> f_data ; int32_t * i_datap = comp -> i_data ; int cbps = s -> cbps [ compno ] ; int w = tile -> comp [ compno ] . coord [ 0 ] [ 1 ] - s -> image_offset_x ; int planar = ! ! picture -> data [ 2 ] ; int pixelsize = planar ? 1 : s -> ncomponents ; int plane = 0 ; if ( planar ) plane = s -> cdef [ compno ] ? s -> cdef [ compno ] - 1 : ( s -> ncomponents - 1 ) ; y = tile -> comp [ compno ] . coord [ 1 ] [ 0 ] - s -> image_offset_y ; <S2SV_StartBug> line = picture -> data [ plane ] + y * picture -> linesize [ plane ] ; <S2SV_EndBug> for ( ; y < tile -> comp [ compno ] . coord [ 1 ] [ 1 ] - s -> image_offset_y ; y += s -> cdy [ compno ] ) { uint8_t * dst ; x = tile -> comp [ compno ] . coord [ 0 ] [ 0 ] - s -> image_offset_x ; <S2SV_StartBug> dst = line + x * pixelsize + compno * ! planar ; <S2SV_EndBug> if ( codsty -> transform == FF_DWT97 ) { for ( ; x < w ; x += s -> cdx [ compno ] ) { int val = lrintf ( * datap ) + ( 1 << ( cbps - 1 ) ) ; val = av_clip ( val , 0 , ( 1 << cbps ) - 1 ) ; * dst = val << ( 8 - cbps ) ; datap ++ ; dst += pixelsize ; } } else { for ( ; x < w ; x += s -> cdx [ compno ] ) { int val = * i_datap + ( 1 << ( cbps - 1 ) ) ; val = av_clip ( val , 0 , ( 1 << cbps ) - 1 ) ; * dst = val << ( 8 - cbps ) ; i_datap ++ ; dst += pixelsize ; } } line += picture -> linesize [ plane ] ; } } } else { for ( compno = 0 ; compno < s -> ncomponents ; compno ++ ) { Jpeg2000Component * comp = tile -> comp + compno ; Jpeg2000CodingStyle * codsty = tile -> codsty + compno ; float * datap = comp -> f_data ; int32_t * i_datap = comp -> i_data ; uint16_t * linel ; int cbps = s -> cbps [ compno ] ; int w = tile -> comp [ compno ] . coord [ 0 ] [ 1 ] - s -> image_offset_x ; int planar = ! ! picture -> data [ 2 ] ; int pixelsize = planar ? 1 : s -> ncomponents ; int plane = 0 ; if ( planar ) plane = s -> cdef [ compno ] ? s -> cdef [ compno ] - 1 : ( s -> ncomponents - 1 ) ; y = tile -> comp [ compno ] . coord [ 1 ] [ 0 ] - s -> image_offset_y ; <S2SV_StartBug> linel = ( uint16_t * ) picture -> data [ plane ] + y * ( picture -> linesize [ plane ] >> 1 ) ; <S2SV_EndBug> for ( ; y < tile -> comp [ compno ] . coord [ 1 ] [ 1 ] - s -> image_offset_y ; y += s -> cdy [ compno ] ) { uint16_t * dst ; x = tile -> comp [ compno ] . coord [ 0 ] [ 0 ] - s -> image_offset_x ; <S2SV_StartBug> dst = linel + ( x * pixelsize + compno * ! planar ) ; <S2SV_EndBug> if ( codsty -> transform == FF_DWT97 ) { for ( ; x < w ; x += s -> cdx [ compno ] ) { int val = lrintf ( * datap ) + ( 1 << ( cbps - 1 ) ) ; val = av_clip ( val , 0 , ( 1 << cbps ) - 1 ) ; * dst = val << ( 16 - cbps ) ; datap ++ ; dst += pixelsize ; } } else { for ( ; x < w ; x += s -> cdx [ compno ] ) { int val = * i_datap + ( 1 << ( cbps - 1 ) ) ; val = av_clip ( val , 0 , ( 1 << cbps ) - 1 ) ; * dst = val << ( 16 - cbps ) ; i_datap ++ ; dst += pixelsize ; } } linel += picture -> linesize [ plane ] >> 1 ; } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] + y / s -> cdy [ compno ] <S2SV_ModStart> line + x / s -> cdx [ compno ] <S2SV_ModStart> ] + y / s -> cdy [ compno ] <S2SV_ModStart> + ( x / s -> cdx [ compno ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_split_extent ( handle_t * handle , struct inode * inode , struct ext4_ext_path * path , struct ext4_map_blocks * map , int split_flag , int flags ) { ext4_lblk_t ee_block ; struct ext4_extent * ex ; unsigned int ee_len , depth ; int err = 0 ; int uninitialized ; int split_flag1 , flags1 ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; uninitialized = ext4_ext_is_uninitialized ( ex ) ; if ( map -> m_lblk + map -> m_len < ee_block + ee_len ) { <S2SV_StartBug> split_flag1 = split_flag & EXT4_EXT_MAY_ZEROOUT ? <S2SV_EndBug> EXT4_EXT_MAY_ZEROOUT : 0 ; flags1 = flags | EXT4_GET_BLOCKS_PRE_IO ; if ( uninitialized ) split_flag1 |= EXT4_EXT_MARK_UNINIT1 | EXT4_EXT_MARK_UNINIT2 ; <S2SV_StartBug> err = ext4_split_extent_at ( handle , inode , path , <S2SV_EndBug> map -> m_lblk + map -> m_len , split_flag1 , flags1 ) ; if ( err ) goto out ; } ext4_ext_drop_refs ( path ) ; path = ext4_ext_find_extent ( inode , map -> m_lblk , path ) ; if ( IS_ERR ( path ) ) return PTR_ERR ( path ) ; if ( map -> m_lblk >= ee_block ) { <S2SV_StartBug> split_flag1 = split_flag & EXT4_EXT_MAY_ZEROOUT ? <S2SV_EndBug> EXT4_EXT_MAY_ZEROOUT : 0 ; if ( uninitialized ) split_flag1 |= EXT4_EXT_MARK_UNINIT1 ; if ( split_flag & EXT4_EXT_MARK_UNINIT2 ) split_flag1 |= EXT4_EXT_MARK_UNINIT2 ; err = ext4_split_extent_at ( handle , inode , path , map -> m_lblk , split_flag1 , flags ) ; if ( err ) goto out ; } ext4_ext_show_leaf ( inode , path ) ; out : return err ? err : map -> m_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> split_flag & EXT4_EXT_MAY_ZEROOUT <S2SV_ModEnd> ; flags1 = <S2SV_ModStart> | EXT4_EXT_MARK_UNINIT2 ; if ( split_flag & EXT4_EXT_DATA_VALID2 ) split_flag1 |= EXT4_EXT_DATA_VALID1 ; <S2SV_ModStart> = split_flag & ( EXT4_EXT_MAY_ZEROOUT | EXT4_EXT_DATA_VALID2 ) <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1079\n\n```\nCWE-20 static int bnep_sock_ioctl ( struct socket * sock , unsigned int cmd , unsigned long arg ) { struct bnep_connlist_req cl ; struct bnep_connadd_req ca ; struct bnep_conndel_req cd ; struct bnep_conninfo ci ; struct socket * nsock ; void __user * argp = ( void __user * ) arg ; int err ; BT_DBG ( \"cmd<S2SV_blank>%x<S2SV_blank>arg<S2SV_blank>%lx\" , cmd , arg ) ; switch ( cmd ) { case BNEPCONNADD : if ( ! capable ( CAP_NET_ADMIN ) ) return - EACCES ; if ( copy_from_user ( & ca , argp , sizeof ( ca ) ) ) return - EFAULT ; nsock = sockfd_lookup ( ca . sock , & err ) ; if ( ! nsock ) return err ; if ( nsock -> sk -> sk_state != BT_CONNECTED ) { sockfd_put ( nsock ) ; return - EBADFD ; } <S2SV_StartBug> err = bnep_add_connection ( & ca , nsock ) ; <S2SV_EndBug> if ( ! err ) { if ( copy_to_user ( argp , & ca , sizeof ( ca ) ) ) err = - EFAULT ; } else sockfd_put ( nsock ) ; return err ; case BNEPCONNDEL : if ( ! capable ( CAP_NET_ADMIN ) ) return - EACCES ; if ( copy_from_user ( & cd , argp , sizeof ( cd ) ) ) return - EFAULT ; return bnep_del_connection ( & cd ) ; case BNEPGETCONNLIST : if ( copy_from_user ( & cl , argp , sizeof ( cl ) ) ) return - EFAULT ; if ( cl . cnum <= 0 ) return - EINVAL ; err = bnep_get_connlist ( & cl ) ; if ( ! err && copy_to_user ( argp , & cl , sizeof ( cl ) ) ) return - EFAULT ; return err ; case BNEPGETCONNINFO : if ( copy_from_user ( & ci , argp , sizeof ( ci ) ) ) return - EFAULT ; err = bnep_get_conninfo ( & ci ) ; if ( ! err && copy_to_user ( argp , & ci , sizeof ( ci ) ) ) return - EFAULT ; return err ; default : return - EINVAL ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EBADFD ; } ca . device [ sizeof ( ca . device ) - 1 ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-20739\n\n```\nCWE-908 int im_vips2dz ( IMAGE * in , const char * filename ) { char * p , * q ; char name [ FILENAME_MAX ] ; char mode [ FILENAME_MAX ] ; char buf [ FILENAME_MAX ] ; int i ; VipsForeignDzLayout layout = VIPS_FOREIGN_DZ_LAYOUT_DZ ; char * suffix = \".jpeg\" ; int overlap = 0 ; int tile_size = 256 ; VipsForeignDzDepth depth = VIPS_FOREIGN_DZ_DEPTH_ONEPIXEL ; gboolean centre = FALSE ; VipsAngle angle = VIPS_ANGLE_D0 ; im_strncpy ( name , filename , FILENAME_MAX ) ; if ( ( p = strchr ( name , ':' ) ) ) { * p = '\\\\0' ; im_strncpy ( mode , p + 1 , FILENAME_MAX ) ; } <S2SV_StartBug> strcpy ( buf , mode ) ; <S2SV_EndBug> p = & buf [ 0 ] ; if ( ( q = im_getnextoption ( & p ) ) ) { if ( ( i = vips_enum_from_nick ( \"im_vips2dz\" , VIPS_TYPE_FOREIGN_DZ_LAYOUT , q ) ) < 0 ) return ( - 1 ) ; layout = i ; } if ( ( q = im_getnextoption ( & p ) ) ) suffix = g_strdup ( q ) ; if ( ( q = im_getnextoption ( & p ) ) ) overlap = atoi ( q ) ; if ( ( q = im_getnextoption ( & p ) ) ) tile_size = atoi ( q ) ; if ( ( q = im_getnextoption ( & p ) ) ) { if ( ( i = vips_enum_from_nick ( \"im_vips2dz\" , VIPS_TYPE_FOREIGN_DZ_DEPTH , q ) ) < 0 ) return ( - 1 ) ; depth = i ; } if ( ( q = im_getnextoption ( & p ) ) ) { if ( im_isprefix ( \"cen\" , q ) ) centre = TRUE ; } if ( ( q = im_getnextoption ( & p ) ) ) { if ( ( i = vips_enum_from_nick ( \"im_vips2dz\" , VIPS_TYPE_ANGLE , q ) ) < 0 ) return ( - 1 ) ; angle = i ; } if ( vips_dzsave ( in , name , \"layout\" , layout , \"suffix\" , suffix , \"overlap\" , overlap , \"tile_size\" , tile_size , \"depth\" , depth , \"centre\" , centre , \"angle\" , angle , NULL ) ) return ( - 1 ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } else strcpy ( mode , \"\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3587\n\n```\nCWE-189 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { size_t tail = ( i << 1 ) + 1 ; if ( cdf_check_stream_offset ( sst , h , p , tail * sizeof ( uint32_t ) , __LINE__ ) == - 1 ) goto out ; size_t ofs = CDF_GETUINT32 ( p , tail ) ; q = ( const uint8_t * ) ( const void * ) ( ( const char * ) ( const void * ) p + ofs - 2 * sizeof ( uint32_t ) ) ; <S2SV_StartBug> if ( q > e ) { <S2SV_EndBug> DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%\" SIZE_T_FORMAT \"u)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=0x%tx,0x%x\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , offs ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; if ( nelements == 0 ) { DPRINTF ( ( \"CDF_VECTOR<S2SV_blank>with<S2SV_blank>nelements<S2SV_blank>==<S2SV_blank>0\\\\n\" ) ) ; goto out ; } o = 2 ; } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_FLOAT : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; u32 = CDF_TOLE4 ( u32 ) ; memcpy ( & inp [ i ] . pi_f , & u32 , sizeof ( inp [ i ] . pi_f ) ) ; break ; case CDF_DOUBLE : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; memcpy ( & inp [ i ] . pi_d , & u64 , sizeof ( inp [ i ] . pi_d ) ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , nelements ) ) ; for ( j = 0 ; j < nelements && i < sh . sh_properties ; j ++ , i ++ ) { uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; if ( l & 1 ) l ++ ; o += l >> 1 ; if ( q + o >= e ) goto out ; o4 = o * sizeof ( uint32_t ) ; } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; break ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( q < p ) { DPRINTF ( ( \"Wrapped<S2SV_blank>around<S2SV_blank>%p<S2SV_blank><<S2SV_blank>%p\\\\n\" , q , p ) ) ; goto out ; } if ( q\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3820\n\n```\nCWE-119 WORD32 ih264d_parse_decode_slice ( UWORD8 u1_is_idr_slice , UWORD8 u1_nal_ref_idc , dec_struct_t * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; dec_pic_params_t * ps_pps ; dec_seq_params_t * ps_seq ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; pocstruct_t s_tmp_poc ; WORD32 i_delta_poc [ 2 ] ; WORD32 i4_poc = 0 ; UWORD16 u2_first_mb_in_slice , u2_frame_num ; UWORD8 u1_field_pic_flag , u1_redundant_pic_cnt = 0 , u1_slice_type ; UWORD32 u4_idr_pic_id = 0 ; UWORD8 u1_bottom_field_flag , u1_pic_order_cnt_type ; UWORD8 u1_nal_unit_type ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; WORD8 i1_is_end_of_poc ; WORD32 ret , end_of_frame ; WORD32 prev_slice_err , num_mb_skipped ; UWORD8 u1_mbaff ; pocstruct_t * ps_cur_poc ; UWORD32 u4_temp ; WORD32 i_temp ; UWORD32 u4_call_end_of_pic = 0 ; ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read_slc = 0 ; u2_first_mb_in_slice = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u2_first_mb_in_slice > ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) ) { return ERROR_CORRUPTED_SLICE ; } if ( ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) <= ps_dec -> u2_cur_mb_addr ) && ( ps_dec -> u2_cur_mb_addr != 0 ) && ( ps_dec -> u4_first_slice_in_pic != 0 ) ) { return ERROR_CORRUPTED_SLICE ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>first_mb_in_slice\" , u2_first_mb_in_slice ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > 9 ) return ERROR_INV_SLC_TYPE_T ; u1_slice_type = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_type\" , ( u1_slice_type ) ) ; ps_dec -> u1_sl_typ_5_9 = 0 ; if ( u1_slice_type > 4 ) { u1_slice_type -= 5 ; ps_dec -> u1_sl_typ_5_9 = 1 ; } { UWORD32 skip ; if ( ( ps_dec -> i4_app_skip_mode == IVD_SKIP_PB ) || ( ps_dec -> i4_dec_skip_mode == IVD_SKIP_PB ) ) { UWORD32 u4_bit_stream_offset = 0 ; if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else if ( ( I_SLICE == u1_slice_type ) && ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else { skip = 1 ; } if ( ( 0 == u2_first_mb_in_slice ) && ( 1 == ps_dec -> u4_prev_nal_skipped ) ) { skip = 0 ; } if ( skip ) { ps_dec -> u4_prev_nal_skipped = 1 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_PB ; return 0 ; } else { if ( 1 == ps_dec -> u4_prev_nal_skipped ) { ps_dec -> u4_return_to_app = 1 ; return 0 ; } } } } u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp & MASK_ERR_PIC_SET_ID ) return ERROR_INV_SPS_PPS_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_parameter_set_id\" , u4_temp ) ; ps_pps = & ps_dec -> ps_pps [ u4_temp ] ; if ( FALSE == ps_pps -> u1_is_valid ) { return ERROR_INV_SPS_PPS_T ; } ps_seq = ps_pps -> ps_sps ; if ( ! ps_seq ) return ERROR_INV_SPS_PPS_T ; if ( FALSE == ps_seq -> u1_is_valid ) return ERROR_INV_SPS_PPS_T ; u2_frame_num = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_bits_in_frm_num ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>frame_num\" , u2_frame_num ) ; if ( ! ps_seq -> u1_frame_mbs_only_flag ) { u1_field_pic_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>field_pic_flag\" , u1_field_pic_flag ) ; u1_bottom_field_flag = 0 ; if ( u1_field_pic_flag ) { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan_fld ; u1_bottom_field_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>bottom_field_flag\" , u1_bottom_field_flag ) ; } else { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } } else { u1_field_pic_flag = 0 ; u1_bottom_field_flag = 0 ; ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } u1_nal_unit_type = SLICE_NAL ; if ( u1_is_idr_slice ) { if ( 0 == u1_field_pic_flag ) { ps_dec -> u1_top_bottom_decoded = TOP_FIELD_ONLY | BOT_FIELD_ONLY ; } u1_nal_unit_type = IDR_SLICE_NAL ; u4_idr_pic_id = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_idr_pic_id > 65535 ) return ERROR_INV_SPS_PPS_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank><S2SV_blank>\" , u4_idr_pic_id ) ; } i_delta_poc [ 0 ] = i_delta_poc [ 1 ] = 0 ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; u1_pic_order_cnt_type = ps_seq -> u1_pic_order_cnt_type ; if ( u1_pic_order_cnt_type == 0 ) { i_temp = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_log2_max_pic_order_cnt_lsb_minus ) ; if ( i_temp < 0 || i_temp >= ps_seq -> i4_max_pic_order_cntLsb ) return ERROR_INV_SPS_PPS_T ; s_tmp_poc . i4_pic_order_cnt_lsb = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_order_cnt_lsb\" , s_tmp_poc . i4_pic_order_cnt_lsb ) ; if ( ( ps_pps -> u1_pic_order_present_flag == 1 ) && ( ! u1_field_pic_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt_bottom = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt_bottom\" , s_tmp_poc . i4_delta_pic_order_cnt_bottom ) ; } } s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = 0 ; if ( u1_pic_order_cnt_type == 1 && ( ! ps_seq -> u1_delta_pic_order_always_zero_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[0]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] ) ; if ( ps_pps -> u1_pic_order_present_flag && ! u1_field_pic_flag ) { s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[1]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] ) ; } } if ( ps_pps -> u1_redundant_pic_cnt_present_flag ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_REDUNDANT_PIC_CNT ) return ERROR_INV_SPS_PPS_T ; u1_redundant_pic_cnt = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>redundant_pic_cnt\" , u1_redundant_pic_cnt ) ; } i1_is_end_of_poc = 0 ; if ( ! ps_dec -> u1_first_slice_in_stream ) { i1_is_end_of_poc = ih264d_is_end_of_pic ( u2_frame_num , u1_nal_ref_idc , & s_tmp_poc , & ps_dec -> s_cur_pic_poc , ps_cur_slice , u1_pic_order_cnt_type , u1_nal_unit_type , u4_idr_pic_id , u1_field_pic_flag , u1_bottom_field_flag ) ; if ( ( ps_dec -> u4_first_slice_in_pic == 2 ) && ( i1_is_end_of_poc == 0 ) ) { ps_dec -> ps_dec_err_status -> u1_err_flag |= REJECT_CUR_PIC ; i1_is_end_of_poc = 1 ; } else { ps_dec -> ps_dec_err_status -> u1_err_flag &= MASK_REJECT_CUR_PIC ; } } u1_mbaff = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; prev_slice_err = 0 ; if ( i1_is_end_of_poc || ps_dec -> u1_first_slice_in_stream ) { if ( u2_frame_num != ps_dec -> u2_prv_frame_num && ps_dec -> u1_top_bottom_decoded != 0 && ps_dec -> u1_top_bottom_decoded != ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) ) { ps_dec -> u1_dangling_field = 1 ; if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; } else { prev_slice_err = 2 ; } if ( ps_dec -> u1_top_bottom_decoded == TOP_FIELD_ONLY ) ps_cur_slice -> u1_bottom_field_flag = 1 ; else ps_cur_slice -> u1_bottom_field_flag = 0 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & ps_dec -> s_cur_pic_poc ; u1_is_idr_slice = ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ; } else if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice > 0 ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; ps_cur_poc = & s_tmp_poc ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; } } else { if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; } else { prev_slice_err = 2 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; } ps_cur_poc = & s_tmp_poc ; } } else { if ( ( u2_first_mb_in_slice << u1_mbaff ) > ps_dec -> u2_total_mbs_coded ) { prev_slice_err = 2 ; num_mb_skipped = ( u2_first_mb_in_slice << u1_mbaff ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } else if ( ( u2_first_mb_in_slice << u1_mbaff ) < ps_dec -> u2_total_mbs_coded ) { return ERROR_CORRUPTED_SLICE ; } } if ( prev_slice_err ) { ret = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , u1_is_idr_slice , u2_frame_num , ps_cur_poc , prev_slice_err ) ; if ( ps_dec -> u1_dangling_field == 1 ) { ps_dec -> u1_second_field = 1 - ps_dec -> u1_second_field ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_dec -> u2_prv_frame_num = u2_frame_num ; ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_DANGLING_FIELD_IN_PIC ; } if ( prev_slice_err == 2 ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_IN_LAST_SLICE_OF_PIC ; } if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } if ( ret != OK ) return ret ; i1_is_end_of_poc = 0 ; } if ( ps_dec -> u4_first_slice_in_pic == 0 ) <S2SV_StartBug> ps_dec -> ps_parse_cur_slice ++ ; <S2SV_EndBug> ps_dec -> u1_slice_header_done = 0 ; if ( ! ps_dec -> u1_first_slice_in_stream ) { UWORD8 uc_mbs_exceed = 0 ; if ( ps_dec -> u2_total_mbs_coded == ( ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ) ) { if ( ps_dec -> u4_first_slice_in_pic == 0 ) uc_mbs_exceed = 1 ; } if ( i1_is_end_of_poc || uc_mbs_exceed ) { if ( 1 == ps_dec -> u1_last_pic_not_decoded ) { ret = ih264d_end_of_pic_dispbuf_mgr ( ps_dec ) ; if ( ret != OK ) return ret ; ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; # if WIN32 H264_DEC_DEBUG_PRINT ( \"<S2SV_blank>------<S2SV_blank>PIC<S2SV_blank>SKIPPED<S2SV_blank>------\\\\n\" ) ; # endif return RET_LAST_SKIP ; } else { ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; } } } if ( u1_field_pic_flag ) { ps_dec -> u2_prv_frame_num = u2_frame_num ; } if ( ps_cur_slice -> u1_mmco_equalto5 ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; if ( ! ps_cur_slice -> u1_field_pic_flag ) { i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; } else if ( ! ps_cur_slice -> u1_bottom_field_flag ) i4_temp_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; else i4_temp_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_poc = i4_temp_poc ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { ret = ih264d_decode_pic_order_cnt ( u1_is_idr_slice , u2_frame_num , & ps_dec -> s_prev_pic_poc , & s_tmp_poc , ps_cur_slice , ps_pps , u1_nal_ref_idc , u1_bottom_field_flag , u1_field_pic_flag , & i4_poc ) ; if ( ret != OK ) return ret ; if ( i4_poc >= ps_dec -> i4_max_poc ) ps_dec -> i4_max_poc = i4_poc ; if ( i4_poc == 0 ) { ps_dec -> i4_prev_max_display_seq = ps_dec -> i4_prev_max_display_seq + ps_dec -> i4_max_poc + ps_dec -> u1_max_dec_frame_buffering + 1 ; ps_dec -> i4_max_poc = 0 ; } } ps_cur_slice -> i4_delta_pic_order_cnt [ 0 ] = i_delta_poc [ 0 ] ; ps_cur_slice -> i4_delta_pic_order_cnt [ 1 ] = i_delta_poc [ 1 ] ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u2_first_mb_in_slice = u2_first_mb_in_slice ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> u1_slice_type = u1_slice_type ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; if ( ps_seq -> u1_frame_mbs_only_flag ) ps_cur_slice -> u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; else ps_cur_slice -> u1_direct_8x8_inference_flag = 1 ; if ( u1_slice_type == B_SLICE ) { ps_cur_slice -> u1_direct_spatial_mv_pred_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>direct_spatial_mv_pred_flag\" , ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ; if ( ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ps_cur_slice -> pf_decodeDirect = ih264d_decode_spatial_direct ; else ps_cur_slice -> pf_decodeDirect = ih264d_decode_temporal_direct ; if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaffB ; } else { if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice == 0 ) { ret = ih264d_start_of_pic ( ps_dec , i4_poc , & s_tmp_poc , u2_frame_num , ps_pps ) ; if ( ret != OK ) return ret ; } ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } { UWORD8 uc_nofield_nombaff ; uc_nofield_nombaff = ( ( ps_dec -> ps_cur_slice -> u1_field_pic_flag == 0 ) && ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag == 0 ) && ( u1_slice_type != B_SLICE ) && ( ps_dec -> ps_cur_pps -> u1_wted_pred_flag == 0 ) ) ; if ( uc_nofield_nombaff ) { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; } else { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_mp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_mp ; } } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u4_frm_sei_sync == u2_frame_num ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; ps_err -> u4_frm_sei_sync = SYNC_FRM_DEFAULT ; } ps_err -> u4_cur_frm = u2_frame_num ; } { WORD32 i4_skip_b_pic , i4_skip_p_pic ; i4_skip_b_pic = ( ps_dec -> u4_skip_frm_mask & B_SLC_BIT ) && ( B_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; i4_skip_p_pic = ( ps_dec -> u4_skip_frm_mask & P_SLC_BIT ) && ( P_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; if ( i4_skip_b_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } if ( i4_skip_p_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } } { UWORD16 u2_mb_x , u2_mb_y ; ps_dec -> i4_submb_ofst = ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) * SUB_BLK_SIZE ) - SUB_BLK_SIZE ; if ( u2_first_mb_in_slice ) { UWORD8 u1_mb_aff ; UWORD8 u1_field_pic ; UWORD16 u2_frm_wd_in_mbs ; u2_frm_wd_in_mbs = ps_seq -> u2_frm_wd_in_mbs ; u1_mb_aff = ps_cur_slice -> u1_mbaff_frame_flag ; u1_field_pic = ps_cur_slice -> u1_field_pic_flag ; { UWORD32 x_offset ; UWORD32 y_offset ; UWORD32 u4_frame_stride ; tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = MOD ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y = DIV ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y <<= u1_mb_aff ; if ( ( u2_mb_x > u2_frm_wd_in_mbs - 1 ) || ( u2_mb_y > ps_dec -> u2_frm_ht_in_mbs - 1 ) ) { return ERROR_CORRUPTED_SLICE ; } u4_frame_stride = ps_dec -> u2_frm_wd_y << u1_field_pic ; x_offset = u2_mb_x << 4 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 4 ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 + x_offset + y_offset ; u4_frame_stride = ps_dec -> u2_frm_wd_uv << u1_field_pic ; x_offset >>= 1 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 3 ; x_offset *= YUV420SP_FACTOR ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 + x_offset + y_offset ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 + x_offset + y_offset ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; if ( ps_dec -> u1_separate_parse == 1 ) { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } else { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } ps_dec -> u2_cur_mb_addr = ( u2_first_mb_in_slice << u1_mb_aff ) ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv + ( ( u2_first_mb_in_slice << u1_mb_aff ) << 4 ) ; } } else { tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = 0xffff ; u2_mb_y = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; } ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= ps_cur_slice -> u1_mbaff_frame_flag ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; } ps_bitstrm -> u4_max_ofst += ps_dec -> ps_cur_pps -> u1_entropy_coding_mode ; ps_dec -> u1_B = ( u1_slice_type == B_SLICE ) ; ps_dec -> u4_next_mb_skip = 0 ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> ps_cur_slice -> u2_first_mb_in_slice ; ps_dec -> ps_parse_cur_slice -> slice_type = ps_dec -> ps_cur_slice -> u1_slice_type ; ps_dec -> u4_start_recon_deblk = 1 ; { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MAX_FRAMES ; if ( ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) && ( 0 == ps_dec -> i4_display_delay ) ) { num_entries = 1 ; } num_entries = ( ( 2 * num_entries ) + 1 ) ; if ( BASE_PROFILE_IDC != ps_dec -> ps_cur_sps -> u1_profile_idc ) { num_entries *= 2 ; } size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( void * ) pu1_buf ; } if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } if ( u1_slice_type == I_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= I_SLC_BIT ; ret = ih264d_parse_islice ( ps_dec , u2_first_mb_in_slice ) ; if ( ps_dec -> i4_pic_type != B_SLICE && ps_dec -> i4_pic_type != P_SLICE ) ps_dec -> i4_pic_type = I_SLICE ; } else if ( u1_slice_type == P_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ret = ih264d_parse_pslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; if ( ps_dec -> i4_pic_type != B_SLICE ) ps_dec -> i4_pic_type = P_SLICE ; } else if ( u1_slice_type == B_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ret = ih264d_parse_bslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; ps_dec -> i4_pic_type = B_SLICE ; } else return ERROR_INV_SLC_TYPE_T ; if ( ps_dec -> u1_slice_header_done ) { ps_dec -> u4_first_slice_in_pic = 0 ; ps_dec -> u1_first_slice_in_stream = 0 ; } if ( ret != OK ) return ret ; <S2SV_StartBug> ps_dec -> u2_cur_slice_num ++ ; <S2SV_EndBug> ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ( ps_seq -> u2_max_mb_addr + 1 ) ) { ps_dec -> u1_pic_decode_done = 1 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ( ps_err -> u1_err_flag & REJECT_PB_PICS ) && ( ps_err -> u1_cur_pic_type == PIC_TYPE_I ) ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } PRINT_BIN_BIT_RATIO ( ps_dec ) return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) { <S2SV_ModStart> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } <S2SV_ModStart> ; ps_dec -> <S2SV_ModEnd> i2_prev_slice_mbx = ps_dec\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-754(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19646\n\n```\nCWE-754 void sqlite3Pragma ( Parse * pParse , Token * pId1 , Token * pId2 , Token * pValue , int minusFlag ) { char * zLeft = 0 ; char * zRight = 0 ; const char * zDb = 0 ; Token * pId ; char * aFcntl [ 4 ] ; int iDb ; int rc ; sqlite3 * db = pParse -> db ; Db * pDb ; Vdbe * v = sqlite3GetVdbe ( pParse ) ; const PragmaName * pPragma ; if ( v == 0 ) return ; sqlite3VdbeRunOnlyOnce ( v ) ; pParse -> nMem = 2 ; iDb = sqlite3TwoPartName ( pParse , pId1 , pId2 , & pId ) ; if ( iDb < 0 ) return ; pDb = & db -> aDb [ iDb ] ; if ( iDb == 1 && sqlite3OpenTempDatabase ( pParse ) ) { return ; } zLeft = sqlite3NameFromToken ( db , pId ) ; if ( ! zLeft ) return ; if ( minusFlag ) { zRight = sqlite3MPrintf ( db , \"-%T\" , pValue ) ; } else { zRight = sqlite3NameFromToken ( db , pValue ) ; } assert ( pId2 ) ; zDb = pId2 -> n > 0 ? pDb -> zDbSName : 0 ; if ( sqlite3AuthCheck ( pParse , SQLITE_PRAGMA , zLeft , zRight , zDb ) ) { goto pragma_out ; } aFcntl [ 0 ] = 0 ; aFcntl [ 1 ] = zLeft ; aFcntl [ 2 ] = zRight ; aFcntl [ 3 ] = 0 ; db -> busyHandler . nBusy = 0 ; rc = sqlite3_file_control ( db , zDb , SQLITE_FCNTL_PRAGMA , ( void * ) aFcntl ) ; if ( rc == SQLITE_OK ) { sqlite3VdbeSetNumCols ( v , 1 ) ; sqlite3VdbeSetColName ( v , 0 , COLNAME_NAME , aFcntl [ 0 ] , SQLITE_TRANSIENT ) ; returnSingleText ( v , aFcntl [ 0 ] ) ; sqlite3_free ( aFcntl [ 0 ] ) ; goto pragma_out ; } if ( rc != SQLITE_NOTFOUND ) { if ( aFcntl [ 0 ] ) { sqlite3ErrorMsg ( pParse , \"%s\" , aFcntl [ 0 ] ) ; sqlite3_free ( aFcntl [ 0 ] ) ; } pParse -> nErr ++ ; pParse -> rc = rc ; goto pragma_out ; } pPragma = pragmaLocate ( zLeft ) ; if ( pPragma == 0 ) goto pragma_out ; if ( ( pPragma -> mPragFlg & PragFlg_NeedSchema ) != 0 ) { if ( sqlite3ReadSchema ( pParse ) ) goto pragma_out ; } if ( ( pPragma -> mPragFlg & PragFlg_NoColumns ) == 0 && ( ( pPragma -> mPragFlg & PragFlg_NoColumns1 ) == 0 || zRight == 0 ) ) { setPragmaResultColumnNames ( v , pPragma ) ; } switch ( pPragma -> ePragTyp ) { # if ! defined ( SQLITE_OMIT_PAGER_PRAGMAS ) && ! defined ( SQLITE_OMIT_DEPRECATED ) case PragTyp_DEFAULT_CACHE_SIZE : { static const int iLn = VDBE_OFFSET_LINENO ( 2 ) ; static const VdbeOpList getCacheSize [ ] = { { OP_Transaction , 0 , 0 , 0 } , { OP_ReadCookie , 0 , 1 , BTREE_DEFAULT_CACHE_SIZE } , { OP_IfPos , 1 , 8 , 0 } , { OP_Integer , 0 , 2 , 0 } , { OP_Subtract , 1 , 2 , 1 } , { OP_IfPos , 1 , 8 , 0 } , { OP_Integer , 0 , 1 , 0 } , { OP_Noop , 0 , 0 , 0 } , { OP_ResultRow , 1 , 1 , 0 } , } ; VdbeOp * aOp ; sqlite3VdbeUsesBtree ( v , iDb ) ; if ( ! zRight ) { pParse -> nMem += 2 ; sqlite3VdbeVerifyNoMallocRequired ( v , ArraySize ( getCacheSize ) ) ; aOp = sqlite3VdbeAddOpList ( v , ArraySize ( getCacheSize ) , getCacheSize , iLn ) ; if ( ONLY_IF_REALLOC_STRESS ( aOp == 0 ) ) break ; aOp [ 0 ] . p1 = iDb ; aOp [ 1 ] . p1 = iDb ; aOp [ 6 ] . p1 = SQLITE_DEFAULT_CACHE_SIZE ; } else { int size = sqlite3AbsInt32 ( sqlite3Atoi ( zRight ) ) ; sqlite3BeginWriteOperation ( pParse , 0 , iDb ) ; sqlite3VdbeAddOp3 ( v , OP_SetCookie , iDb , BTREE_DEFAULT_CACHE_SIZE , size ) ; assert ( sqlite3SchemaMutexHeld ( db , iDb , 0 ) ) ; pDb -> pSchema -> cache_size = size ; sqlite3BtreeSetCacheSize ( pDb -> pBt , pDb -> pSchema -> cache_size ) ; } break ; } # endif # if ! defined ( SQLITE_OMIT_PAGER_PRAGMAS ) case PragTyp_PAGE_SIZE : { Btree * pBt = pDb -> pBt ; assert ( pBt != 0 ) ; if ( ! zRight ) { int size = ALWAYS ( pBt ) ? sqlite3BtreeGetPageSize ( pBt ) : 0 ; returnSingleInt ( v , size ) ; } else { db -> nextPagesize = sqlite3Atoi ( zRight ) ; if ( SQLITE_NOMEM == sqlite3BtreeSetPageSize ( pBt , db -> nextPagesize , - 1 , 0 ) ) { sqlite3OomFault ( db ) ; } } break ; } case PragTyp_SECURE_DELETE : { Btree * pBt = pDb -> pBt ; int b = - 1 ; assert ( pBt != 0 ) ; if ( zRight ) { if ( sqlite3_stricmp ( zRight , \"fast\" ) == 0 ) { b = 2 ; } else { b = sqlite3GetBoolean ( zRight , 0 ) ; } } if ( pId2 -> n == 0 && b >= 0 ) { int ii ; for ( ii = 0 ; ii < db -> nDb ; ii ++ ) { sqlite3BtreeSecureDelete ( db -> aDb [ ii ] . pBt , b ) ; } } b = sqlite3BtreeSecureDelete ( pBt , b ) ; returnSingleInt ( v , b ) ; break ; } case PragTyp_PAGE_COUNT : { int iReg ; sqlite3CodeVerifySchema ( pParse , iDb ) ; iReg = ++ pParse -> nMem ; if ( sqlite3Tolower ( zLeft [ 0 ] ) == 'p' ) { sqlite3VdbeAddOp2 ( v , OP_Pagecount , iDb , iReg ) ; } else { sqlite3VdbeAddOp3 ( v , OP_MaxPgcnt , iDb , iReg , sqlite3AbsInt32 ( sqlite3Atoi ( zRight ) ) ) ; } sqlite3VdbeAddOp2 ( v , OP_ResultRow , iReg , 1 ) ; break ; } case PragTyp_LOCKING_MODE : { const char * zRet = \"normal\" ; int eMode = getLockingMode ( zRight ) ; if ( pId2 -> n == 0 && eMode == PAGER_LOCKINGMODE_QUERY ) { eMode = db -> dfltLockMode ; } else { Pager * pPager ; if ( pId2 -> n == 0 ) { int ii ; assert ( pDb == & db -> aDb [ 0 ] ) ; for ( ii = 2 ; ii < db -> nDb ; ii ++ ) { pPager = sqlite3BtreePager ( db -> aDb [ ii ] . pBt ) ; sqlite3PagerLockingMode ( pPager , eMode ) ; } db -> dfltLockMode = ( u8 ) eMode ; } pPager = sqlite3BtreePager ( pDb -> pBt ) ; eMode = sqlite3PagerLockingMode ( pPager , eMode ) ; } assert ( eMode == PAGER_LOCKINGMODE_NORMAL || eMode == PAGER_LOCKINGMODE_EXCLUSIVE ) ; if ( eMode == PAGER_LOCKINGMODE_EXCLUSIVE ) { zRet = \"exclusive\" ; } returnSingleText ( v , zRet ) ; break ; } case PragTyp_JOURNAL_MODE : { int eMode ; int ii ; if ( zRight == 0 ) { eMode = PAGER_JOURNALMODE_QUERY ; } else { const char * zMode ; int n = sqlite3Strlen30 ( zRight ) ; for ( eMode = 0 ; ( zMode = sqlite3JournalModename ( eMode ) ) != 0 ; eMode ++ ) { if ( sqlite3StrNICmp ( zRight , zMode , n ) == 0 ) break ; } if ( ! zMode ) { eMode = PAGER_JOURNALMODE_QUERY ; } if ( eMode == PAGER_JOURNALMODE_OFF && ( db -> flags & SQLITE_Defensive ) != 0 ) { eMode = PAGER_JOURNALMODE_QUERY ; } } if ( eMode == PAGER_JOURNALMODE_QUERY && pId2 -> n == 0 ) { iDb = 0 ; pId2 -> n = 1 ; } for ( ii = db -> nDb - 1 ; ii >= 0 ; ii -- ) { if ( db -> aDb [ ii ] . pBt && ( ii == iDb || pId2 -> n == 0 ) ) { sqlite3VdbeUsesBtree ( v , ii ) ; sqlite3VdbeAddOp3 ( v , OP_JournalMode , ii , 1 , eMode ) ; } } sqlite3VdbeAddOp2 ( v , OP_ResultRow , 1 , 1 ) ; break ; } case PragTyp_JOURNAL_SIZE_LIMIT : { Pager * pPager = sqlite3BtreePager ( pDb -> pBt ) ; i64 iLimit = - 2 ; if ( zRight ) { sqlite3DecOrHexToI64 ( zRight , & iLimit ) ; if ( iLimit < - 1 ) iLimit = - 1 ; } iLimit = sqlite3PagerJournalSizeLimit ( pPager , iLimit ) ; returnSingleInt ( v , iLimit ) ; break ; } # endif # ifndef SQLITE_OMIT_AUTOVACUUM case PragTyp_AUTO_VACUUM : { Btree * pBt = pDb -> pBt ; assert ( pBt != 0 ) ; if ( ! zRight ) { returnSingleInt ( v , sqlite3BtreeGetAutoVacuum ( pBt ) ) ; } else { int eAuto = getAutoVacuum ( zRight ) ; assert ( eAuto >= 0 && eAuto <= 2 ) ; db -> nextAutovac = ( u8 ) eAuto ; rc = sqlite3BtreeSetAutoVacuum ( pBt , eAuto ) ; if ( rc == SQLITE_OK && ( eAuto == 1 || eAuto == 2 ) ) { static const int iLn = VDBE_OFFSET_LINENO ( 2 ) ; static const VdbeOpList setMeta6 [ ] = { { OP_Transaction , 0 , 1 , 0 } , { OP_ReadCookie , 0 , 1 , BTREE_LARGEST_ROOT_PAGE } , { OP_If , 1 , 0 , 0 } , { OP_Halt , SQLITE_OK , OE_Abort , 0 } , { OP_SetCookie , 0 , BTREE_INCR_VACUUM , 0 } , } ; VdbeOp * aOp ; int iAddr = sqlite3VdbeCurrentAddr ( v ) ; sqlite3VdbeVerifyNoMallocRequired ( v , ArraySize ( setMeta6 ) ) ; aOp = sqlite3VdbeAddOpList ( v , ArraySize ( setMeta6 ) , setMeta6 , iLn ) ; if ( ONLY_IF_REALLOC_STRESS ( aOp == 0 ) ) break ; aOp [ 0 ] . p1 = iDb ; aOp [ 1 ] . p1 = iDb ; aOp [ 2 ] . p2 = iAddr + 4 ; aOp [ 4 ] . p1 = iDb ; aOp [ 4 ] . p3 = eAuto - 1 ; sqlite3VdbeUsesBtree ( v , iDb ) ; } } break ; } # endif # ifndef SQLITE_OMIT_AUTOVACUUM case PragTyp_INCREMENTAL_VACUUM : { int iLimit , addr ; if ( zRight == 0 || ! sqlite3GetInt32 ( zRight , & iLimit ) || iLimit <= 0 ) { iLimit = 0x7fffffff ; } sqlite3BeginWriteOperation ( pParse , 0 , iDb ) ; sqlite3VdbeAddOp2 ( v , OP_Integer , iLimit , 1 ) ; addr = sqlite3VdbeAddOp1 ( v , OP_IncrVacuum , iDb ) ; VdbeCoverage ( v ) ; sqlite3VdbeAddOp1 ( v , OP_ResultRow , 1 ) ; sqlite3VdbeAddOp2 ( v , OP_AddImm , 1 , - 1 ) ; sqlite3VdbeAddOp2 ( v , OP_IfPos , 1 , addr ) ; VdbeCoverage ( v ) ; sqlite3VdbeJumpHere ( v , addr ) ; break ; } # endif # ifndef SQLITE_OMIT_PAGER_PRAGMAS case PragTyp_CACHE_SIZE : { assert ( sqlite3SchemaMutexHeld ( db , iDb , 0 ) ) ; if ( ! zRight ) { returnSingleInt ( v , pDb -> pSchema -> cache_size ) ; } else { int size = sqlite3Atoi ( zRight ) ; pDb -> pSchema -> cache_size = size ; sqlite3BtreeSetCacheSize ( pDb -> pBt , pDb -> pSchema -> cache_size ) ; } break ; } case PragTyp_CACHE_SPILL : { assert ( sqlite3SchemaMutexHeld ( db , iDb , 0 ) ) ; if ( ! zRight ) { returnSingleInt ( v , ( db -> flags & SQLITE_CacheSpill ) == 0 ? 0 : sqlite3BtreeSetSpillSize ( pDb -> pBt , 0 ) ) ; } else { int size = 1 ; if ( sqlite3GetInt32 ( zRight , & size ) ) { sqlite3BtreeSetSpillSize ( pDb -> pBt , size ) ; } if ( sqlite3GetBoolean ( zRight , size != 0 ) ) { db -> flags |= SQLITE_CacheSpill ; } else { db -> flags &= ~ ( u64 ) SQLITE_CacheSpill ; } setAllPagerFlags ( db ) ; } break ; } case PragTyp_MMAP_SIZE : { sqlite3_int64 sz ; # if SQLITE_MAX_MMAP_SIZE > 0 assert ( sqlite3SchemaMutexHeld ( db , iDb , 0 ) ) ; if ( zRight ) { int ii ; sqlite3DecOrHexToI64 ( zRight , & sz ) ; if ( sz < 0 ) sz = sqlite3GlobalConfig . szMmap ; if ( pId2 -> n == 0 ) db -> szMmap = sz ; for ( ii = db -> nDb - 1 ; ii >= 0 ; ii -- ) { if ( db -> aDb [ ii ] . pBt && ( ii == iDb || pId2 -> n == 0 ) ) { sqlite3BtreeSetMmapLimit ( db -> aDb [ ii ] . pBt , sz ) ; } } } sz = - 1 ; rc = sqlite3_file_control ( db , zDb , SQLITE_FCNTL_MMAP_SIZE , & sz ) ; # else sz = 0 ; rc = SQLITE_OK ; # endif if ( rc == SQLITE_OK ) { returnSingleInt ( v , sz ) ; } else if ( rc != SQLITE_NOTFOUND ) { pParse -> nErr ++ ; pParse -> rc = rc ; } break ; } case PragTyp_TEMP_STORE : { if ( ! zRight ) { returnSingleInt ( v , db -> temp_store ) ; } else { changeTempStorage ( pParse , zRight ) ; } break ; } case PragTyp_TEMP_STORE_DIRECTORY : { if ( ! zRight ) { returnSingleText ( v , sqlite3_temp_directory ) ; } else { # ifndef SQLITE_OMIT_WSD if ( zRight [ 0 ] ) { int res ; rc = sqlite3OsAccess ( db -> pVfs , zRight , SQLITE_ACCESS_READWRITE , & res ) ; if ( rc != SQLITE_OK || res == 0 ) { sqlite3ErrorMsg ( pParse , \"not<S2SV_blank>a<S2SV_blank>writable<S2SV_blank>directory\" ) ; goto pragma_out ; } } if ( SQLITE_TEMP_STORE == 0 || ( SQLITE_TEMP_STORE == 1 && db -> temp_store <= 1 ) || ( SQLITE_TEMP_STORE == 2 && db -> temp_store == 1 ) ) { invalidateTempStorage ( pParse ) ; } sqlite3_free ( sqlite3_temp_directory ) ; if ( zRight [ 0 ] ) { sqlite3_temp_directory = sqlite3_mprintf ( \"%s\" , zRight ) ; } else { sqlite3_temp_directory = 0 ; } # endif } break ; } # if SQLITE_OS_WIN case PragTyp_DATA_STORE_DIRECTORY : { if ( ! zRight ) { returnSingleText ( v , sqlite3_data_directory ) ; } else { # ifndef SQLITE_OMIT_WSD if ( zRight [ 0 ] ) { int res ; rc = sqlite3OsAccess ( db -> pVfs , zRight , SQLITE_ACCESS_READWRITE , & res ) ; if ( rc != SQLITE_OK || res == 0 ) { sqlite3ErrorMsg ( pParse , \"not<S2SV_blank>a<S2SV_blank>writable<S2SV_blank>directory\" ) ; goto pragma_out ; } } sqlite3_free ( sqlite3_data_directory ) ; if ( zRight [ 0 ] ) { sqlite3_data_directory = sqlite3_mprintf ( \"%s\" , zRight ) ; } else { sqlite3_data_directory = 0 ; } # endif } break ; } # endif # if SQLITE_ENABLE_LOCKING_STYLE case PragTyp_LOCK_PROXY_FILE : { if ( ! zRight ) { Pager * pPager = sqlite3BtreePager ( pDb -> pBt ) ; char * proxy_file_path = NULL ; sqlite3_file * pFile = sqlite3PagerFile ( pPager ) ; sqlite3OsFileControlHint ( pFile , SQLITE_GET_LOCKPROXYFILE , & proxy_file_path ) ; returnSingleText ( v , proxy_file_path ) ; } else { Pager * pPager = sqlite3BtreePager ( pDb -> pBt ) ; sqlite3_file * pFile = sqlite3PagerFile ( pPager ) ; int res ; if ( zRight [ 0 ] ) { res = sqlite3OsFileControl ( pFile , SQLITE_SET_LOCKPROXYFILE , zRight ) ; } else { res = sqlite3OsFileControl ( pFile , SQLITE_SET_LOCKPROXYFILE , NULL ) ; } if ( res != SQLITE_OK ) { sqlite3ErrorMsg ( pParse , \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>lock<S2SV_blank>proxy<S2SV_blank>file\" ) ; goto pragma_out ; } } break ; } # endif case PragTyp_SYNCHRONOUS : { if ( ! zRight ) { returnSingleInt ( v , pDb -> safety_level - 1 ) ; } else { if ( ! db -> autoCommit ) { sqlite3ErrorMsg ( pParse , \"Safety<S2SV_blank>level<S2SV_blank>may<S2SV_blank>not<S2SV_blank>be<S2SV_blank>changed<S2SV_blank>inside<S2SV_blank>a<S2SV_blank>transaction\" ) ; } else if ( iDb != 1 ) { int iLevel = ( getSafetyLevel ( zRight , 0 , 1 ) + 1 ) & PAGER_SYNCHRONOUS_MASK ; if ( iLevel == 0 ) iLevel = 1 ; pDb -> safety_level = iLevel ; pDb -> bSyncSet = 1 ; setAllPagerFlags ( db ) ; } } break ; } # endif # ifndef SQLITE_OMIT_FLAG_PRAGMAS case PragTyp_FLAG : { if ( zRight == 0 ) { setPragmaResultColumnNames ( v , pPragma ) ; returnSingleInt ( v , ( db -> flags & pPragma -> iArg ) != 0 ) ; } else { u64 mask = pPragma -> iArg ; if ( db -> autoCommit == 0 ) { mask &= ~ ( SQLITE_ForeignKeys ) ; } # if SQLITE_USER_AUTHENTICATION if ( db -> auth . authLevel == UAUTH_User ) { mask &= ~ ( SQLITE_WriteSchema ) ; } # endif if ( sqlite3GetBoolean ( zRight , 0 ) ) { db -> flags |= mask ; } else { db -> flags &= ~ mask ; if ( mask == SQLITE_DeferFKs ) db -> nDeferredImmCons = 0 ; } sqlite3VdbeAddOp0 ( v , OP_Expire ) ; setAllPagerFlags ( db ) ; } break ; } # endif # ifndef SQLITE_OMIT_SCHEMA_PRAGMAS case PragTyp_TABLE_INFO : if ( zRight ) { Table * pTab ; pTab = sqlite3LocateTable ( pParse , LOCATE_NOERR , zRight , zDb ) ; if ( pTab ) { int iTabDb = sqlite3SchemaToIndex ( db , pTab -> pSchema ) ; int i , k ; int nHidden = 0 ; Column * pCol ; Index * pPk = sqlite3PrimaryKeyIndex ( pTab ) ; pParse -> nMem = 7 ; sqlite3CodeVerifySchema ( pParse , iTabDb ) ; sqlite3ViewGetColumnNames ( pParse , pTab ) ; for ( i = 0 , pCol = pTab -> aCol ; i < pTab -> nCol ; i ++ , pCol ++ ) { int isHidden = 0 ; if ( pCol -> colFlags & COLFLAG_NOINSERT ) { if ( pPragma -> iArg == 0 ) { nHidden ++ ; continue ; } if ( pCol -> colFlags & COLFLAG_VIRTUAL ) { isHidden = 2 ; } else if ( pCol -> colFlags & COLFLAG_STORED ) { isHidden = 3 ; } else { assert ( pCol -> colFlags & COLFLAG_HIDDEN ) ; isHidden = 1 ; } } if ( ( pCol -> colFlags & COLFLAG_PRIMKEY ) == 0 ) { k = 0 ; } else if ( pPk == 0 ) { k = 1 ; } else { for ( k = 1 ; k <= pTab -> nCol && pPk -> aiColumn [ k - 1 ] != i ; k ++ ) { } } assert ( pCol -> pDflt == 0 || pCol -> pDflt -> op == TK_SPAN || isHidden >= 2 ) ; sqlite3VdbeMultiLoad ( v , 1 , pPragma -> iArg ? \"issisii\" : \"issisi\" , i - nHidden , pCol -> zName , sqlite3ColumnType ( pCol , \"\" ) , pCol -> notNull ? 1 : 0 , pCol -> pDflt && isHidden < 2 ? pCol -> pDflt -> u . zToken : 0 , k , isHidden ) ; } } } break ; # ifdef SQLITE_DEBUG case PragTyp_STATS : { Index * pIdx ; HashElem * i ; pParse -> nMem = 5 ; sqlite3CodeVerifySchema ( pParse , iDb ) ; for ( i = sqliteHashFirst ( & pDb -> pSchema -> tblHash ) ; i ; i = sqliteHashNext ( i ) ) { Table * pTab = sqliteHashData ( i ) ; sqlite3VdbeMultiLoad ( v , 1 , \"ssiii\" , pTab -> zName , 0 , pTab -> szTabRow , pTab -> nRowLogEst , pTab -> tabFlags ) ; for ( pIdx = pTab -> pIndex ; pIdx ; pIdx = pIdx -> pNext ) { sqlite3VdbeMultiLoad ( v , 2 , \"siiiX\" , pIdx -> zName , pIdx -> szIdxRow , pIdx -> aiRowLogEst [ 0 ] , pIdx -> hasStat1 ) ; sqlite3VdbeAddOp2 ( v , OP_ResultRow , 1 , 5 ) ; } } } break ; # endif case PragTyp_INDEX_INFO : if ( zRight ) { Index * pIdx ; Table * pTab ; pIdx = sqlite3FindIndex ( db , zRight , zDb ) ; if ( pIdx == 0 ) { pTab = sqlite3LocateTable ( pParse , LOCATE_NOERR , zRight , zDb ) ; if ( pTab && ! HasRowid ( pTab ) ) { pIdx = sqlite3PrimaryKeyIndex ( pTab ) ; } } if ( pIdx ) { int iIdxDb = sqlite3SchemaToIndex ( db , pIdx -> pSchema ) ; int i ; int mx ; if ( pPragma -> iArg ) { mx = pIdx -> nColumn ; pParse -> nMem = 6 ; } else { mx = pIdx -> nKeyCol ; pParse -> nMem = 3 ; } pTab = pIdx -> pTable ; sqlite3CodeVerifySchema ( pParse , iIdxDb ) ; assert ( pParse -> nMem <= pPragma -> nPragCName ) ; for ( i = 0 ; i < mx ; i ++ ) { i16 cnum = pIdx -> aiColumn [ i ] ; sqlite3VdbeMultiLoad ( v , 1 , \"iisX\" , i , cnum , cnum < 0 ? 0 : pTab -> aCol [ cnum ] . zName ) ; if ( pPragma -> iArg ) { sqlite3VdbeMultiLoad ( v , 4 , \"isiX\" , pIdx -> aSortOrder [ i ] , pIdx -> azColl [ i ] , i < pIdx -> nKeyCol ) ; } sqlite3VdbeAddOp2 ( v , OP_ResultRow , 1 , pParse -> nMem ) ; } } } break ; case PragTyp_INDEX_LIST : if ( zRight ) { Index * pIdx ; Table * pTab ; int i ; pTab = sqlite3FindTable ( db , zRight , zDb ) ; if ( pTab ) { int iTabDb = sqlite3SchemaToIndex ( db , pTab -> pSchema ) ; pParse -> nMem = 5 ; sqlite3CodeVerifySchema ( pParse , iTabDb ) ; for ( pIdx = pTab -> pIndex , i = 0 ; pIdx ; pIdx = pIdx -> pNext , i ++ ) { const char * azOrigin [ ] = { \"c\" , \"u\" , \"pk\" } ; sqlite3VdbeMultiLoad ( v , 1 , \"isisi\" , i , pIdx -> zName , IsUniqueIndex ( pIdx ) , azOrigin [ pIdx -> idxType ] , pIdx -> pPartIdxWhere != 0 ) ; } } } break ; case PragTyp_DATABASE_LIST : { int i ; pParse -> nMem = 3 ; for ( i = 0 ; i < db -> nDb ; i ++ ) { if ( db -> aDb [ i ] . pBt == 0 ) continue ; assert ( db -> aDb [ i ] . zDbSName != 0 ) ; sqlite3VdbeMultiLoad ( v , 1 , \"iss\" , i , db -> aDb [ i ] . zDbSName , sqlite3BtreeGetFilename ( db -> aDb [ i ] . pBt ) ) ; } } break ; case PragTyp_COLLATION_LIST : { int i = 0 ; HashElem * p ; pParse -> nMem = 2 ; for ( p = sqliteHashFirst ( & db -> aCollSeq ) ; p ; p = sqliteHashNext ( p ) ) { CollSeq * pColl = ( CollSeq * ) sqliteHashData ( p ) ; sqlite3VdbeMultiLoad ( v , 1 , \"is\" , i ++ , pColl -> zName ) ; } } break ; # ifndef SQLITE_OMIT_INTROSPECTION_PRAGMAS case PragTyp_FUNCTION_LIST : { int i ; HashElem * j ; FuncDef * p ; pParse -> nMem = 2 ; for ( i = 0 ; i < SQLITE_FUNC_HASH_SZ ; i ++ ) { for ( p = sqlite3BuiltinFunctions . a [ i ] ; p ; p = p -> u . pHash ) { if ( p -> funcFlags & SQLITE_FUNC_INTERNAL ) continue ; sqlite3VdbeMultiLoad ( v , 1 , \"si\" , p -> zName , 1 ) ; } } for ( j = sqliteHashFirst ( & db -> aFunc ) ; j ; j = sqliteHashNext ( j ) ) { p = ( FuncDef * ) sqliteHashData ( j ) ; sqlite3VdbeMultiLoad ( v , 1 , \"si\" , p -> zName , 0 ) ; } } break ; # ifndef SQLITE_OMIT_VIRTUALTABLE case PragTyp_MODULE_LIST : { HashElem * j ; pParse -> nMem = 1 ; for ( j = sqliteHashFirst ( & db -> aModule ) ; j ; j = sqliteHashNext ( j ) ) { Module * pMod = ( Module * ) sqliteHashData ( j ) ; sqlite3VdbeMultiLoad ( v , 1 , \"s\" , pMod -> zName ) ; } } break ; # endif case PragTyp_PRAGMA_LIST : { int i ; for ( i = 0 ; i < ArraySize ( aPragmaName ) ; i ++ ) { sqlite3VdbeMultiLoad ( v , 1 , \"s\" , aPragmaName [ i ] . zName ) ; } } break ; # endif # endif # ifndef SQLITE_OMIT_FOREIGN_KEY case PragTyp_FOREIGN_KEY_LIST : if ( zRight ) { FKey * pFK ; Table * pTab ; pTab = sqlite3FindTable ( db , zRight , zDb ) ; if ( pTab ) { pFK = pTab -> pFKey ; if ( pFK ) { int iTabDb = sqlite3SchemaToIndex ( db , pTab -> pSchema ) ; int i = 0 ; pParse -> nMem = 8 ; sqlite3CodeVerifySchema ( pParse , iTabDb ) ; while ( pFK ) { int j ; for ( j = 0 ; j < pFK -> nCol ; j ++ ) { sqlite3VdbeMultiLoad ( v , 1 , \"iissssss\" , i , j , pFK -> zTo , pTab -> aCol [ pFK -> aCol [ j ] . iFrom ] . zName , pFK -> aCol [ j ] . zCol , actionName ( pFK -> aAction [ 1 ] ) , actionName ( pFK -> aAction [ 0 ] ) , \"NONE\" ) ; } ++ i ; pFK = pFK -> pNextFrom ; } } } } break ; # endif # ifndef SQLITE_OMIT_FOREIGN_KEY # ifndef SQLITE_OMIT_TRIGGER case PragTyp_FOREIGN_KEY_CHECK : { FKey * pFK ; Table * pTab ; Table * pParent ; Index * pIdx ; int i ; int j ; HashElem * k ; int x ; int regResult ; int regKey ; int regRow ; int addrTop ; int addrOk ; int * aiCols ; regResult = pParse -> nMem + 1 ; pParse -> nMem += 4 ; regKey = ++ pParse -> nMem ; regRow = ++ pParse -> nMem ; k = sqliteHashFirst ( & db -> aDb [ iDb ] . pSchema -> tblHash ) ; while ( k ) { int iTabDb ; if ( zRight ) { pTab = sqlite3LocateTable ( pParse , 0 , zRight , zDb ) ; k = 0 ; } else { pTab = ( Table * ) sqliteHashData ( k ) ; k = sqliteHashNext ( k ) ; } if ( pTab == 0 || pTab -> pFKey == 0 ) continue ; iTabDb = sqlite3SchemaToIndex ( db , pTab -> pSchema ) ; sqlite3CodeVerifySchema ( pParse , iTabDb ) ; sqlite3TableLock ( pParse , iTabDb , pTab -> tnum , 0 , pTab -> zName ) ; if ( pTab -> nCol + regRow > pParse -> nMem ) pParse -> nMem = pTab -> nCol + regRow ; sqlite3OpenTable ( pParse , 0 , iTabDb , pTab , OP_OpenRead ) ; sqlite3VdbeLoadString ( v , regResult , pTab -> zName ) ; for ( i = 1 , pFK = pTab -> pFKey ; pFK ; i ++ , pFK = pFK -> pNextFrom ) { pParent = sqlite3FindTable ( db , pFK -> zTo , zDb ) ; if ( pParent == 0 ) continue ; pIdx = 0 ; sqlite3TableLock ( pParse , iTabDb , pParent -> tnum , 0 , pParent -> zName ) ; x = sqlite3FkLocateIndex ( pParse , pParent , pFK , & pIdx , 0 ) ; if ( x == 0 ) { if ( pIdx == 0 ) { sqlite3OpenTable ( pParse , i , iTabDb , pParent , OP_OpenRead ) ; } else { sqlite3VdbeAddOp3 ( v , OP_OpenRead , i , pIdx -> tnum , iTabDb ) ; sqlite3VdbeSetP4KeyInfo ( pParse , pIdx ) ; } } else { k = 0 ; break ; } } assert ( pParse -> nErr > 0 || pFK == 0 ) ; if ( pFK ) break ; if ( pParse -> nTab < i ) pParse -> nTab = i ; addrTop = sqlite3VdbeAddOp1 ( v , OP_Rewind , 0 ) ; VdbeCoverage ( v ) ; for ( i = 1 , pFK = pTab -> pFKey ; pFK ; i ++ , pFK = pFK -> pNextFrom ) { pParent = sqlite3FindTable ( db , pFK -> zTo , zDb ) ; pIdx = 0 ; aiCols = 0 ; if ( pParent ) { x = sqlite3FkLocateIndex ( pParse , pParent , pFK , & pIdx , & aiCols ) ; assert ( x == 0 ) ; } addrOk = sqlite3VdbeMakeLabel ( pParse ) ; for ( j = 0 ; j < pFK -> nCol ; j ++ ) { int iCol = aiCols ? aiCols [ j ] : pFK -> aCol [ j ] . iFrom ; sqlite3ExprCodeGetColumnOfTable ( v , pTab , 0 , iCol , regRow + j ) ; sqlite3VdbeAddOp2 ( v , OP_IsNull , regRow + j , addrOk ) ; VdbeCoverage ( v ) ; } if ( pIdx ) { sqlite3VdbeAddOp4 ( v , OP_MakeRecord , regRow , pFK -> nCol , regKey , sqlite3IndexAffinityStr ( db , pIdx ) , pFK -> nCol ) ; sqlite3VdbeAddOp4Int ( v , OP_Found , i , addrOk , regKey , 0 ) ; VdbeCoverage ( v ) ; } else if ( pParent ) { int jmp = sqlite3VdbeCurrentAddr ( v ) + 2 ; sqlite3VdbeAddOp3 ( v , OP_SeekRowid , i , jmp , regRow ) ; VdbeCoverage ( v ) ; sqlite3VdbeGoto ( v , addrOk ) ; assert ( pFK -> nCol == 1 ) ; } if ( HasRowid ( pTab ) ) { sqlite3VdbeAddOp2 ( v , OP_Rowid , 0 , regResult + 1 ) ; } else { sqlite3VdbeAddOp2 ( v , OP_Null , 0 , regResult + 1 ) ; } sqlite3VdbeMultiLoad ( v , regResult + 2 , \"siX\" , pFK -> zTo , i - 1 ) ; sqlite3VdbeAddOp2 ( v , OP_ResultRow , regResult , 4 ) ; sqlite3VdbeResolveLabel ( v , addrOk ) ; sqlite3DbFree ( db , aiCols ) ; } sqlite3VdbeAddOp2 ( v , OP_Next , 0 , addrTop + 1 ) ; VdbeCoverage ( v ) ; sqlite3VdbeJumpHere ( v , addrTop ) ; } } break ; # endif # endif # ifndef SQLITE_OMIT_CASE_SENSITIVE_LIKE_PRAGMA case PragTyp_CASE_SENSITIVE_LIKE : { if ( zRight ) { sqlite3RegisterLikeFunctions ( db , sqlite3GetBoolean ( zRight , 0 ) ) ; } } break ; # endif # ifndef SQLITE_INTEGRITY_CHECK_ERROR_MAX # define SQLITE_INTEGRITY_CHECK_ERROR_MAX 100 # endif # ifndef SQLITE_OMIT_INTEGRITY_CHECK case PragTyp_INTEGRITY_CHECK : { int i , j , addr , mxErr ; int isQuick = ( sqlite3Tolower ( zLeft [ 0 ] ) == 'q' ) ; assert ( iDb >= 0 ) ; assert ( iDb == 0 || pId2 -> z ) ; if ( pId2 -> z == 0 ) iDb = - 1 ; pParse -> nMem = 6 ; mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX ; if ( zRight ) { sqlite3GetInt32 ( zRight , & mxErr ) ; if ( mxErr <= 0 ) { mxErr = SQLITE_INTEGRITY_CHECK_ERROR_MAX ; } } sqlite3VdbeAddOp2 ( v , OP_Integer , mxErr - 1 , 1 ) ; for ( i = 0 ; i < db -> nDb ; i ++ ) { HashElem * x ; Hash * pTbls ; int * aRoot ; int cnt = 0 ; int mxIdx = 0 ; if ( OMIT_TEMPDB && i == 1 ) continue ; if ( iDb >= 0 && i != iDb ) continue ; sqlite3CodeVerifySchema ( pParse , i ) ; assert ( sqlite3SchemaMutexHeld ( db , i , 0 ) ) ; pTbls = & db -> aDb [ i ] . pSchema -> tblHash ; for ( cnt = 0 , x = sqliteHashFirst ( pTbls ) ; x ; x = sqliteHashNext ( x ) ) { Table * pTab = sqliteHashData ( x ) ; Index * pIdx ; int nIdx ; if ( HasRowid ( pTab ) ) cnt ++ ; for ( nIdx = 0 , pIdx = pTab -> pIndex ; pIdx ; pIdx = pIdx -> pNext , nIdx ++ ) { cnt ++ ; } if ( nIdx > mxIdx ) mxIdx = nIdx ; } aRoot = sqlite3DbMallocRawNN ( db , sizeof ( int ) * ( cnt + 1 ) ) ; if ( aRoot == 0 ) break ; for ( cnt = 0 , x = sqliteHashFirst ( pTbls ) ; x ; x = sqliteHashNext ( x ) ) { Table * pTab = sqliteHashData ( x ) ; Index * pIdx ; if ( HasRowid ( pTab ) ) aRoot [ ++ cnt ] = pTab -> tnum ; for ( pIdx = pTab -> pIndex ; pIdx ; pIdx = pIdx -> pNext ) { aRoot [ ++ cnt ] = pIdx -> tnum ; } } aRoot [ 0 ] = cnt ; pParse -> nMem = MAX ( pParse -> nMem , 8 + mxIdx ) ; sqlite3ClearTempRegCache ( pParse ) ; sqlite3VdbeAddOp4 ( v , OP_IntegrityCk , 2 , cnt , 1 , ( char * ) aRoot , P4_INTARRAY ) ; sqlite3VdbeChangeP5 ( v , ( u8 ) i ) ; addr = sqlite3VdbeAddOp1 ( v , OP_IsNull , 2 ) ; VdbeCoverage ( v ) ; sqlite3VdbeAddOp4 ( v , OP_String8 , 0 , 3 , 0 , sqlite3MPrintf ( db , \"***<S2SV_blank>in<S2SV_blank>database<S2SV_blank>%s<S2SV_blank>***\\\\n\" , db -> aDb [ i ] . zDbSName ) , P4_DYNAMIC ) ; sqlite3VdbeAddOp3 ( v , OP_Concat , 2 , 3 , 3 ) ; integrityCheckResultRow ( v ) ; sqlite3VdbeJumpHere ( v , addr ) ; for ( x = sqliteHashFirst ( pTbls ) ; x ; x = sqliteHashNext ( x ) ) { Table * pTab = sqliteHashData ( x ) ; Index * pIdx , * pPk ; Index * pPrior = 0 ; int loopTop ; int iDataCur , iIdxCur ; int r1 = - 1 ; if ( pTab -> tnum < 1 ) continue ; pPk = HasRowid ( pTab ) ? 0 : sqlite3PrimaryKeyIndex ( pTab ) ; sqlite3OpenTableAndIndices ( pParse , pTab , OP_OpenRead , 0 , 1 , 0 , & iDataCur , & iIdxCur ) ; sqlite3VdbeAddOp2 ( v , OP_Integer , 0 , 7 ) ; for ( j = 0 , pIdx = pTab -> pIndex ; pIdx ; pIdx = pIdx -> pNext , j ++ ) { sqlite3VdbeAddOp2 ( v , OP_Integer , 0 , 8 + j ) ; } assert ( pParse -> nMem >= 8 + j ) ; assert ( sqlite3NoTempsInRange ( pParse , 1 , 7 + j ) ) ; sqlite3VdbeAddOp2 ( v , OP_Rewind , iDataCur , 0 ) ; VdbeCoverage ( v ) ; loopTop = sqlite3VdbeAddOp2 ( v , OP_AddImm , 7 , 1 ) ; if ( ! isQuick ) { sqlite3VdbeAddOp3 ( v , OP_Column , iDataCur , pTab -> nNVCol - 1 , 3 ) ; sqlite3VdbeChangeP5 ( v , OPFLAG_TYPEOFARG ) ; } for ( j = 0 ; j < pTab -> nCol ; j ++ ) { char * zErr ; int jmp2 ; if ( j == pTab -> iPKey ) continue ; if ( pTab -> aCol [ j ] . notNull == 0 ) continue ; sqlite3ExprCodeGetColumnOfTable ( v , pTab , iDataCur , j , 3 ) ; <S2SV_StartBug> sqlite3VdbeChangeP5 ( v , OPFLAG_TYPEOFARG ) ; <S2SV_EndBug> jmp2 = sqlite3VdbeAddOp1 ( v , OP_NotNull , 3 ) ; VdbeCoverage ( v ) ; zErr = sqlite3MPrintf ( db , \"NULL<S2SV_blank>value<S2SV_blank>in<S2SV_blank>%s.%s\" , pTab -> zName , pTab -> aCol [ j ] . zName ) ; sqlite3VdbeAddOp4 ( v , OP_String8 , 0 , 3 , 0 , zErr , P4_DYNAMIC ) ; integrityCheckResultRow ( v ) ; sqlite3VdbeJumpHere ( v , jmp2 ) ; } if ( pTab -> pCheck && ( db -> flags & SQLITE_IgnoreChecks ) == 0 ) { ExprList * pCheck = sqlite3ExprListDup ( db , pTab -> pCheck , 0 ) ; if ( db -> mallocFailed == 0 ) { int addrCkFault = sqlite3VdbeMakeLabel ( pParse ) ; int addrCkOk = sqlite3VdbeMakeLabel ( pParse ) ; char * zErr ; int k ; pParse -> iSelfTab = iDataCur + 1 ; for ( k = pCheck -> nExpr - 1 ; k > 0 ; k -- ) { sqlite3ExprIfFalse ( pParse , pCheck -> a [ k ] . pExpr , addrCkFault , 0 ) ; } sqlite3ExprIfTrue ( pParse , pCheck -> a [ 0 ] . pExpr , addrCkOk , SQLITE_JUMPIFNULL ) ; sqlite3VdbeResolveLabel ( v , addrCkFault ) ; pParse -> iSelfTab = 0 ; zErr = sqlite3MPrintf ( db , \"CHECK<S2SV_blank>constraint<S2SV_blank>failed<S2SV_blank>in<S2SV_blank>%s\" , pTab -> zName ) ; sqlite3VdbeAddOp4 ( v , OP_String8 , 0 , 3 , 0 , zErr , P4_DYNAMIC ) ; integrityCheckResultRow ( v ) ; sqlite3VdbeResolveLabel ( v , addrCkOk ) ; } sqlite3ExprListDelete ( db , pCheck ) ; } if ( ! isQuick ) { for ( j = 0 , pIdx = pTab -> pIndex ; pIdx ; pIdx = pIdx -> pNext , j ++ ) { int jmp2 , jmp3 , jmp4 , jmp5 ; int ckUniq = sqlite3VdbeMakeLabel ( pParse ) ; if ( pPk == pIdx ) continue ; r1 = sqlite3GenerateIndexKey ( pParse , pIdx , iDataCur , 0 , 0 , & jmp3 , pPrior , r1 ) ; pPrior = pIdx ; sqlite3VdbeAddOp2 ( v , OP_AddImm , 8 + j , 1 ) ; jmp2 = sqlite3VdbeAddOp4Int ( v , OP_Found , iIdxCur + j , ckUniq , r1 , pIdx -> nColumn ) ; VdbeCoverage ( v ) ; sqlite3VdbeLoadString ( v , 3 , \"row<S2SV_blank>\" ) ; sqlite3VdbeAddOp3 ( v , OP_Concat , 7 , 3 , 3 ) ; sqlite3VdbeLoadString ( v , 4 , \"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>index<S2SV_blank>\" ) ; sqlite3VdbeAddOp3 ( v , OP_Concat , 4 , 3 , 3 ) ; jmp5 = sqlite3VdbeLoadString ( v , 4 , pIdx -> zName ) ; sqlite3VdbeAddOp3 ( v , OP_Concat , 4 , 3 , 3 ) ; jmp4 = integrityCheckResultRow ( v ) ; sqlite3VdbeJumpHere ( v , jmp2 ) ; if ( IsUniqueIndex ( pIdx ) ) { int uniqOk = sqlite3VdbeMakeLabel ( pParse ) ; int jmp6 ; int kk ; for ( kk = 0 ; kk < pIdx -> nKeyCol ; kk ++ ) { int iCol = pIdx -> aiColumn [ kk ] ; assert ( iCol != XN_ROWID && iCol < pTab -> nCol ) ; if ( iCol >= 0 && pTab -> aCol [ iCol ] . notNull ) continue ; sqlite3VdbeAddOp2 ( v , OP_IsNull , r1 + kk , uniqOk ) ; VdbeCoverage ( v ) ; } jmp6 = sqlite3VdbeAddOp1 ( v , OP_Next , iIdxCur + j ) ; VdbeCoverage ( v ) ; sqlite3VdbeGoto ( v , uniqOk ) ; sqlite3VdbeJumpHere ( v , jmp6 ) ; sqlite3VdbeAddOp4Int ( v , OP_IdxGT , iIdxCur + j , uniqOk , r1 , pIdx -> nKeyCol ) ; VdbeCoverage ( v ) ; sqlite3VdbeLoadString ( v , 3 , \"non-unique<S2SV_blank>entry<S2SV_blank>in<S2SV_blank>index<S2SV_blank>\" ) ; sqlite3VdbeGoto ( v , jmp5 ) ; sqlite3VdbeResolveLabel ( v , uniqOk ) ; } sqlite3VdbeJumpHere ( v , jmp4 ) ; sqlite3ResolvePartIdxLabel ( pParse , jmp3 ) ; } } sqlite3VdbeAddOp2 ( v , OP_Next , iDataCur , loopTop ) ; VdbeCoverage ( v ) ; sqlite3VdbeJumpHere ( v , loopTop - 1 ) ; # ifndef SQLITE_OMIT_BTREECOUNT if ( ! isQuick ) { sqlite3VdbeLoadString ( v , 2 , \"wrong<S2SV_blank>#<S2SV_blank>of<S2SV_blank>entries<S2SV_blank>in<S2SV_blank>index<S2SV_blank>\" ) ; for ( j = 0 , pIdx = pTab -> pIndex ; pIdx ; pIdx = pIdx -> pNext , j ++ ) { if ( pPk == pIdx ) continue ; sqlite3VdbeAddOp2 ( v , OP_Count , iIdxCur + j , 3 ) ; addr = sqlite3VdbeAddOp3 ( v , OP_Eq , 8 + j , 0 , 3 ) ; VdbeCoverage ( v ) ; sqlite3VdbeChangeP5 ( v , SQLITE_NOTNULL ) ; sqlite3VdbeLoadString ( v , 4 , pIdx -> zName ) ; sqlite3VdbeAddOp3 ( v , OP_Concat , 4 , 2 , 3 ) ; integrityCheckResultRow ( v ) ; sqlite3VdbeJumpHere ( v , addr ) ; } } # endif } } { static const int iLn = VDBE_OFFSET_LINENO ( 2 ) ; static const VdbeOpList endCode [ ] = { { OP_AddImm , 1 , 0 , 0 } , { OP_IfNotZero , 1 , 4 , 0 } , { OP_String8 , 0 , 3 , 0 } , { OP_ResultRow , 3 , 1 , 0 } , { OP_Halt , 0 , 0 , 0 } , { OP_String8 , 0 , 3 , 0 } , { OP_Goto , 0 , 3 , 0 } , } ; VdbeOp * aOp ; aOp = sqlite3VdbeAddOpList ( v , ArraySize ( endCode ) , endCode , iLn ) ; if ( aOp ) { aOp [ 0 ] . p2 = 1 - mxErr ; aOp [ 2 ] . p4type = P4_STATIC ; aOp [ 2 ] . p4 . z = \"ok\" ; aOp [ 5 ] . p4type = P4_STATIC ; aOp [ 5 ] . p4 . z = ( char * ) sqlite3ErrStr ( SQLITE_CORRUPT ) ; } sqlite3VdbeChangeP3 ( v , 0 , sqlite3VdbeCurrentAddr ( v ) - 2 ) ; } } break ; # endif # ifndef SQLITE_OMIT_UTF16 case PragTyp_ENCODING : { static const struct EncName { char * zName ; u8 enc ; } encnames [ ] = { { \"UTF8\" , SQLITE_UTF8 } , { \"UTF-8\" , SQLITE_UTF8 } , { \"UTF-16le\" , SQLITE_UTF16LE } , { \"UTF-16be\" , SQLITE_UTF16BE } , { \"UTF16le\" , SQLITE_UTF16LE } , { \"UTF16be\" , SQLITE_UTF16BE } , { \"UTF-16\" , 0 } , { \"UTF16\" , 0 } , { 0 , 0 } } ; const struct EncName * pEnc ; if ( ! zRight ) { if ( sqlite3ReadSchema ( pParse ) ) goto pragma_out ; assert ( encnames [ SQLITE_UTF8 ] . enc == SQLITE_UTF8 ) ; assert ( encnames [ SQLITE_UTF16LE ] . enc == SQLITE_UTF16LE ) ; assert ( encnames [ SQLITE_UTF16BE ] . enc == SQLITE_UTF16BE ) ; returnSingleText ( v , encnames [ ENC ( pParse -> db ) ] . zName ) ; } else { if ( ! ( DbHasProperty ( db , 0 , DB_SchemaLoaded ) ) || DbHasProperty ( db , 0 , DB_Empty ) ) { for ( pEnc = & encnames [ 0 ] ; pEnc -> zName ; pEnc ++ ) { if ( 0 == sqlite3StrICmp ( zRight , pEnc -> zName ) ) { SCHEMA_ENC ( db ) = ENC ( db ) = pEnc -> enc ? pEnc -> enc : SQLITE_UTF16NATIVE ; break ; } } if ( ! pEnc -> zName ) { sqlite3ErrorMsg ( pParse , \"unsupported<S2SV_blank>encoding:<S2SV_blank>%s\" , zRight ) ; } } } } break ; # endif # ifndef SQLITE_OMIT_SCHEMA_VERSION_PRAGMAS case PragTyp_HEADER_VALUE : { int iCookie = pPragma -> iArg ; sqlite3VdbeUsesBtree ( v , iDb ) ; if ( zRight && ( pPragma -> mPragFlg & PragFlg_ReadOnly ) == 0 ) { static const VdbeOpList setCookie [ ] = { { OP_Transaction , 0 , 1 , 0 } , { OP_SetCookie , 0 , 0 , 0 } , } ; VdbeOp * aOp ; sqlite3VdbeVerifyNoMallocRequired ( v , ArraySize ( setCookie ) ) ; aOp = sqlite3VdbeAddOpList ( v , ArraySize ( setCookie ) , setCookie , 0 ) ; if ( ONLY_IF_REALLOC_STRESS ( aOp == 0 ) ) break ; aOp [ 0 ] . p1 = iDb ; aOp [ 1 ] . p1 = iDb ; aOp [ 1 ] . p2 = iCookie ; aOp [ 1 ] . p3 = sqlite3Atoi ( zRight ) ; } else { static const VdbeOpList readCookie [ ] = { { OP_Transaction , 0 , 0 , 0 } , { OP_ReadCookie , 0 , 1 , 0 } , { OP_ResultRow , 1 , 1 , 0 } } ; VdbeOp * aOp ; sqlite3VdbeVerifyNoMallocRequired ( v , ArraySize ( readCookie ) ) ; aOp = sqlite3VdbeAddOpList ( v , ArraySize ( readCookie ) , readCookie , 0 ) ; if ( ONLY_IF_REALLOC_STRESS ( aOp == 0 ) ) break ; aOp [ 0 ] . p1 = iDb ; aOp [ 1 ] . p1 = iDb ; aOp [ 1 ] . p3 = iCookie ; sqlite3VdbeReusable ( v ) ; } } break ; # endif # ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS case PragTyp_COMPILE_OPTIONS : { int i = 0 ; const char * zOpt ; pParse -> nMem = 1 ; while ( ( zOpt = sqlite3_compileoption_get ( i ++ ) ) != 0 ) { sqlite3VdbeLoadString ( v , 1 , zOpt ) ; sqlite3VdbeAddOp2 ( v , OP_ResultRow , 1 , 1 ) ; } sqlite3VdbeReusable ( v ) ; } break ; # endif # ifndef SQLITE_OMIT_WAL case PragTyp_WAL_CHECKPOINT : { int iBt = ( pId2 -> z ? iDb : SQLITE_MAX_ATTACHED ) ; int eMode = SQLITE_CHECKPOINT_PASSIVE ; if ( zRight ) { if ( sqlite3StrICmp ( zRight , \"full\" ) == 0 ) { eMode = SQLITE_CHECKPOINT_FULL ; } else if ( sqlite3StrICmp ( zRight , \"restart\" ) == 0 ) { eMode = SQLITE_CHECKPOINT_RESTART ; } else if ( sqlite3StrICmp ( zRight , \"truncate\" ) == 0 ) { eMode = SQLITE_CHECKPOINT_TRUNCATE ; } } pParse -> nMem = 3 ; sqlite3VdbeAddOp3 ( v , OP_Checkpoint , iBt , eMode , 1 ) ; sqlite3VdbeAddOp2 ( v , OP_ResultRow , 1 , 3 ) ; } break ; case PragTyp_WAL_AUTOCHECKPOINT : { if ( zRight ) { sqlite3_wal_autocheckpoint ( db , sqlite3Atoi ( zRight ) ) ; } returnSingleInt ( v , db -> xWalCallback == sqlite3WalDefaultHook ? SQLITE_PTR_TO_INT ( db -> pWalArg ) : 0 ) ; } break ; # endif case PragTyp_SHRINK_MEMORY : { sqlite3_db_release_memory ( db ) ; break ; } case PragTyp_OPTIMIZE : { int iDbLast ; int iTabCur ; HashElem * k ; Schema * pSchema ; Table * pTab ; Index * pIdx ; LogEst szThreshold ; char * zSubSql ; u32 opMask ; if ( zRight ) { opMask = ( u32 ) sqlite3Atoi ( zRight ) ; if ( ( opMask & 0x02 ) == 0 ) break ; } else { opMask = 0xfffe ; } iTabCur = pParse -> nTab ++ ; for ( iDbLast = zDb ? iDb : db -> nDb - 1 ; iDb <= iDbLast ; iDb ++ ) { if ( iDb == 1 ) continue ; sqlite3CodeVerifySchema ( pParse , iDb ) ; pSchema = db -> aDb [ iDb ] . pSchema ; for ( k = sqliteHashFirst ( & pSchema -> tblHash ) ; k ; k = sqliteHashNext ( k ) ) { pTab = ( Table * ) sqliteHashData ( k ) ; if ( ( pTab -> tabFlags & TF_StatsUsed ) == 0 ) continue ; szThreshold = pTab -> nRowLogEst + 46 ; assert ( sqlite3LogEst ( 25 ) == 46 ) ; for ( pIdx = pTab -> pIndex ; pIdx ; pIdx = pIdx -> pNext ) { if ( ! pIdx -> hasStat1 ) { szThreshold = 0 ; break ; } } if ( szThreshold ) { sqlite3OpenTable ( pParse , iTabCur , iDb , pTab , OP_OpenRead ) ; sqlite3VdbeAddOp3 ( v , OP_IfSmaller , iTabCur , sqlite3VdbeCurrentAddr ( v ) + 2 + ( opMask & 1 ) , szThreshold ) ; VdbeCoverage ( v ) ; } zSubSql = sqlite3MPrintf ( db , \"ANALYZE<S2SV_blank>\\\\\"%w\\\\\".\\\\\"%w\\\\\"\" , db -> aDb [ iDb ] . zDbSName , pTab -> zName ) ; if ( opMask & 0x01 ) { int r1 = sqlite3GetTempReg ( pParse ) ; sqlite3VdbeAddOp4 ( v , OP_String8 , 0 , r1 , 0 , zSubSql , P4_DYNAMIC ) ; sqlite3VdbeAddOp2 ( v , OP_ResultRow , r1 , 1 ) ; } else { sqlite3VdbeAddOp4 ( v , OP_SqlExec , 0 , 0 , 0 , zSubSql , P4_DYNAMIC ) ; } } } sqlite3VdbeAddOp0 ( v , OP_Expire ) ; break ; } default : { assert ( pPragma -> ePragTyp == PragTyp_BUSY_TIMEOUT ) ; if ( zRight ) { sqlite3_busy_timeout ( db , sqlite3Atoi ( zRight ) ) ; } returnSingleInt ( v , db -> busyTimeout ) ; break ; } case PragTyp_SOFT_HEAP_LIMIT : { sqlite3_int64 N ; if ( zRight && sqlite3DecOrHexToI64 ( zRight , & N ) == SQLITE_OK ) { sqlite3_soft_heap_limit64 ( N ) ; } returnSingleInt ( v , sqlite3_soft_heap_limit64 ( - 1 ) ) ; break ; } case PragTyp_HARD_HEAP_LIMIT : { sqlite3_int64 N ; if ( zRight && sqlite3DecOrHexToI64 ( zRight , & N ) == SQLITE_OK ) { sqlite3_int64 iPrior = sqlite3_hard_heap_limit64 ( - 1 ) ; if ( N > 0 && ( iPrior == 0 || iPrior > N ) ) sqlite3_hard_heap_limit64 ( N ) ; } returnSingleInt ( v , sqlite3_hard_heap_limit64 ( - 1 ) ) ; break ; } case PragTyp_THREADS : { sqlite3_int64 N ; if ( zRight && sqlite3DecOrHexToI64 ( zRight , & N ) == SQLITE_OK && N >= 0 ) { sqlite3_limit ( db , SQLITE_LIMIT_WORKER_THREADS , ( int ) ( N & 0x7fffffff ) ) ; } returnSingleInt ( v , sqlite3_limit ( db , SQLITE_LIMIT_WORKER_THREADS , - 1 ) ) ; break ; } # if defined ( SQLITE_DEBUG ) || defined ( SQLITE_TEST ) case PragTyp_LOCK_STATUS : { static const char * const azLockName [ ] = { \"unlocked\" , \"shared\" , \"reserved\" , \"pending\" , \"exclusive\" } ; int i ; pParse -> nMem = 2 ; for ( i = 0 ; i < db -> nDb ; i ++ ) { Btree * pBt ; const char * zState = \"unknown\" ; int j ; if ( db -> aDb [ i ] . zDbSName == 0 ) continue ; pBt = db -> aDb [ i ] . pBt ; if ( pBt == 0 || sqlite3BtreePager ( pBt ) == 0 ) { zState = \"closed\" ; } else if ( sqlite3_file_control ( db , i ? db -> aDb [ i ] . zDbSName : 0 , SQLITE_FCNTL_LOCKSTATE , & j ) == SQLITE_OK ) { zState = azLockName [ j ] ; } sqlite3VdbeMultiLoad ( v , 1 , \"ss\" , db -> aDb [ i ] . zDbSName , zState ) ; } break ; } # endif # ifdef SQLITE_HAS_CODEC case PragTyp_KEY : { if ( zRight ) { char zBuf [ 40 ] ; const char * zKey = zRight ; int n ; if ( pPragma -> iArg == 2 || pPragma -> iArg == 3 ) { u8 iByte ; int i ; for ( i = 0 , iByte = 0 ; i < sizeof ( zBuf ) * 2 && sqlite3Isxdigit ( zRight [ i ] ) ; i ++ ) { iByte = ( iByte << 4 ) + sqlite3HexToInt ( zRight [ i ] ) ; if ( ( i & 1 ) != 0 ) zBuf [ i / 2 ] = iByte ; } zKey = zBuf ; n = i / 2 ; } else { n = pPragma -> iArg < 4 ? sqlite3Strlen30 ( zRight ) : - 1 ; } if ( ( pPragma -> iArg & 1 ) == 0 ) { rc = sqlite3_key_v2 ( db , zDb , zKey , n ) ; } else { rc = sqlite3_rekey_v2 ( db , zDb , zKey , n ) ; } if ( rc == SQLITE_OK && n != 0 ) { sqlite3VdbeSetNumCols ( v , 1 ) ; sqlite3VdbeSetColName ( v , 0 , COLNAME_NAME , \"ok\" , SQLITE_STATIC ) ; returnSingleText ( v , \"ok\" ) ; } } break ; } # endif # if defined ( SQLITE_HAS_CODEC ) || defined ( SQLITE_ENABLE_CEROD ) case PragTyp_ACTIVATE_EXTENSIONS : if ( zRight ) { # ifdef SQLITE_HAS_CODEC if ( sqlite3StrNICmp ( zRight , \"see-\" , 4 ) == 0 ) { sqlite3_activate_see ( & zRight [ 4 ] ) ; } # endif # ifdef SQLITE_ENABLE_CEROD if ( sqlite3StrNICmp ( zRight , \"cerod-\" , 6 ) == 0 ) { sqlite3_activate_cerod ( & zRight [ 6 ] ) ; } # endif } break ; # endif } if ( ( pPragma -> mPragFlg & PragFlg_NoColumns1 ) && zRight ) { sqlite3VdbeVerifyNoResultRow ( v ) ; } pragma_out : sqlite3DbFree ( db , zLeft ) ; sqlite3DbFree ( db , zRight ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 3 ) ; if ( sqlite3VdbeGetOp ( v , - 1 ) -> opcode == OP_Column ) { <S2SV_ModStart> OPFLAG_TYPEOFARG ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4943\n\n```\nCWE-269 static int pppol2tp_getsockopt ( struct socket * sock , int level , int optname , char __user * optval , int __user * optlen ) { struct sock * sk = sock -> sk ; struct l2tp_session * session ; struct l2tp_tunnel * tunnel ; int val , len ; int err ; struct pppol2tp_session * ps ; if ( level != SOL_PPPOL2TP ) <S2SV_StartBug> return udp_prot . getsockopt ( sk , level , optname , optval , optlen ) ; <S2SV_EndBug> if ( get_user ( len , optlen ) ) return - EFAULT ; len = min_t ( unsigned int , len , sizeof ( int ) ) ; if ( len < 0 ) return - EINVAL ; err = - ENOTCONN ; if ( sk -> sk_user_data == NULL ) goto end ; err = - EBADF ; session = pppol2tp_sock_to_session ( sk ) ; if ( session == NULL ) goto end ; ps = l2tp_session_priv ( session ) ; if ( ( session -> session_id == 0 ) && ( session -> peer_session_id == 0 ) ) { err = - EBADF ; tunnel = l2tp_sock_to_tunnel ( ps -> tunnel_sock ) ; if ( tunnel == NULL ) goto end_put_sess ; err = pppol2tp_tunnel_getsockopt ( sk , tunnel , optname , & val ) ; sock_put ( ps -> tunnel_sock ) ; } else err = pppol2tp_session_getsockopt ( sk , session , optname , & val ) ; err = - EFAULT ; if ( put_user ( len , optlen ) ) goto end_put_sess ; if ( copy_to_user ( ( void __user * ) optval , & val , len ) ) goto end_put_sess ; err = 0 ; end_put_sess : sock_put ( sk ) ; end : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SOL_PPPOL2TP ) return - EINVAL <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3152\n\n```\nCWE-284 int main ( int argc , char * * argv ) { int error ; my_bool first_argument_uses_wildcards = 0 ; char * wild ; MYSQL mysql ; MY_INIT ( argv [ 0 ] ) ; my_getopt_use_args_separator = TRUE ; if ( load_defaults ( \"my\" , load_default_groups , & argc , & argv ) ) exit ( 1 ) ; my_getopt_use_args_separator = FALSE ; get_options ( & argc , & argv ) ; wild = 0 ; if ( argc ) { char * pos = argv [ argc - 1 ] , * to ; for ( to = pos ; * pos ; pos ++ , to ++ ) { switch ( * pos ) { case '*' : * pos = '%' ; first_argument_uses_wildcards = 1 ; break ; case '?' : * pos = '_' ; first_argument_uses_wildcards = 1 ; break ; case '%' : case '_' : first_argument_uses_wildcards = 1 ; break ; case '\\\\\\\\' : pos ++ ; default : break ; } * to = * pos ; } * to = * pos ; } if ( first_argument_uses_wildcards ) wild = argv [ -- argc ] ; else if ( argc == 3 ) wild = argv [ -- argc ] ; if ( argc > 2 ) { fprintf ( stderr , \"%s:<S2SV_blank>Too<S2SV_blank>many<S2SV_blank>arguments\\\\n\" , my_progname ) ; exit ( 1 ) ; } mysql_init ( & mysql ) ; if ( opt_compress ) mysql_options ( & mysql , MYSQL_OPT_COMPRESS , NullS ) ; <S2SV_StartBug> # ifdef HAVE_OPENSSL <S2SV_EndBug> if ( opt_use_ssl ) { mysql_ssl_set ( & mysql , opt_ssl_key , opt_ssl_cert , opt_ssl_ca , opt_ssl_capath , opt_ssl_cipher ) ; mysql_options ( & mysql , MYSQL_OPT_SSL_CRL , opt_ssl_crl ) ; mysql_options ( & mysql , MYSQL_OPT_SSL_CRLPATH , opt_ssl_crlpath ) ; } mysql_options ( & mysql , MYSQL_OPT_SSL_VERIFY_SERVER_CERT , ( char * ) & opt_ssl_verify_server_cert ) ; # endif if ( opt_protocol ) mysql_options ( & mysql , MYSQL_OPT_PROTOCOL , ( char * ) & opt_protocol ) ; if ( opt_bind_addr ) mysql_options ( & mysql , MYSQL_OPT_BIND , opt_bind_addr ) ; # if defined ( _WIN32 ) && ! defined ( EMBEDDED_LIBRARY ) if ( shared_memory_base_name ) mysql_options ( & mysql , MYSQL_SHARED_MEMORY_BASE_NAME , shared_memory_base_name ) ; # endif mysql_options ( & mysql , MYSQL_SET_CHARSET_NAME , default_charset ) ; if ( opt_plugin_dir && * opt_plugin_dir ) mysql_options ( & mysql , MYSQL_PLUGIN_DIR , opt_plugin_dir ) ; if ( opt_default_auth && * opt_default_auth ) mysql_options ( & mysql , MYSQL_DEFAULT_AUTH , opt_default_auth ) ; mysql_options ( & mysql , MYSQL_OPT_CONNECT_ATTR_RESET , 0 ) ; mysql_options4 ( & mysql , MYSQL_OPT_CONNECT_ATTR_ADD , \"program_name\" , \"mysqlshow\" ) ; if ( ! ( mysql_real_connect ( & mysql , host , user , opt_password , ( first_argument_uses_wildcards ) ? \"\" : argv [ 0 ] , opt_mysql_port , opt_mysql_unix_port , 0 ) ) ) { fprintf ( stderr , \"%s:<S2SV_blank>%s\\\\n\" , my_progname , mysql_error ( & mysql ) ) ; exit ( 1 ) ; } mysql . reconnect = 1 ; switch ( argc ) { case 0 : error = list_dbs ( & mysql , wild ) ; break ; case 1 : if ( opt_status ) error = list_table_status ( & mysql , argv [ 0 ] , wild ) ; else error = list_tables ( & mysql , argv [ 0 ] , wild ) ; break ; default : if ( opt_status && ! wild ) error = list_table_status ( & mysql , argv [ 0 ] , argv [ 1 ] ) ; else error = list_fields ( & mysql , argv [ 0 ] , argv [ 1 ] , wild ) ; break ; } mysql_close ( & mysql ) ; my_free ( opt_password ) ; # if defined ( _WIN32 ) && ! defined ( EMBEDDED_LIBRARY ) my_free ( shared_memory_base_name ) ; # endif my_end ( my_end_arg ) ; exit ( error ? 1 : 0 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NullS ) ; SSL_SET_OPTIONS ( & mysql ) ; <S2SV_ModEnd> if ( opt_protocol\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2744\n\n```\nCWE-000 struct sk_buff * nf_ct_frag6_gather ( struct sk_buff * skb , u32 user ) { struct sk_buff * clone ; struct net_device * dev = skb -> dev ; struct frag_hdr * fhdr ; struct nf_ct_frag6_queue * fq ; struct ipv6hdr * hdr ; int fhoff , nhoff ; u8 prevhdr ; struct sk_buff * ret_skb = NULL ; if ( ipv6_hdr ( skb ) -> payload_len == 0 ) { pr_debug ( \"payload<S2SV_blank>len<S2SV_blank>=<S2SV_blank>0\\\\n\" ) ; return skb ; } if ( find_prev_fhdr ( skb , & prevhdr , & nhoff , & fhoff ) < 0 ) return skb ; clone = skb_clone ( skb , GFP_ATOMIC ) ; if ( clone == NULL ) { pr_debug ( \"Can\\'t<S2SV_blank>clone<S2SV_blank>skb\\\\n\" ) ; return skb ; } NFCT_FRAG6_CB ( clone ) -> orig = skb ; if ( ! pskb_may_pull ( clone , fhoff + sizeof ( * fhdr ) ) ) { pr_debug ( \"message<S2SV_blank>is<S2SV_blank>too<S2SV_blank>short.\\\\n\" ) ; goto ret_orig ; } skb_set_transport_header ( clone , fhoff ) ; hdr = ipv6_hdr ( clone ) ; fhdr = ( struct frag_hdr * ) skb_transport_header ( clone ) ; <S2SV_StartBug> if ( ! ( fhdr -> frag_off & htons ( 0xFFF9 ) ) ) { <S2SV_EndBug> pr_debug ( \"Invalid<S2SV_blank>fragment<S2SV_blank>offset\\\\n\" ) ; goto ret_orig ; } if ( atomic_read ( & nf_init_frags . mem ) > nf_init_frags . high_thresh ) nf_ct_frag6_evictor ( ) ; fq = fq_find ( fhdr -> identification , user , & hdr -> saddr , & hdr -> daddr ) ; if ( fq == NULL ) { pr_debug ( \"Can\\'t<S2SV_blank>find<S2SV_blank>and<S2SV_blank>can\\'t<S2SV_blank>create<S2SV_blank>new<S2SV_blank>queue\\\\n\" ) ; goto ret_orig ; } spin_lock_bh ( & fq -> q . lock ) ; if ( nf_ct_frag6_queue ( fq , clone , fhdr , nhoff ) < 0 ) { spin_unlock_bh ( & fq -> q . lock ) ; pr_debug ( \"Can\\'t<S2SV_blank>insert<S2SV_blank>skb<S2SV_blank>to<S2SV_blank>queue\\\\n\" ) ; fq_put ( fq ) ; goto ret_orig ; } if ( fq -> q . last_in == ( INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN ) && fq -> q . meat == fq -> q . len ) { ret_skb = nf_ct_frag6_reasm ( fq , dev ) ; if ( ret_skb == NULL ) pr_debug ( \"Can\\'t<S2SV_blank>reassemble<S2SV_blank>fragmented<S2SV_blank>packets\\\\n\" ) ; } spin_unlock_bh ( & fq -> q . lock ) ; fq_put ( fq ) ; return ret_skb ; ret_orig : kfree_skb ( clone ) ; return skb ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> atomic_read ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16546\n\n```\nCWE-119 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; one = 1 ; image = AcquireImage ( image_info , exception ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; Rec2 . RecordLength = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec . RecordLength ) ; if ( Rec . RecordLength > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> resolution . x = BitmapHeader1 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > <S2SV_StartBug> ( Rec2 . RecordLength - 2 - 2 ) / 3 ) <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> resolution . x = BitmapHeader2 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; UnpackRaster : status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp <= 16 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp , exception ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ReplaceImageInList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > ( Rec2 . RecordLength - 2 - 2 ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; image -> rows = Bitmap2Header1 . Height ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk + 1 , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( image , BImgBuff , i , bpp , exception ) ; } if ( BImgBuff ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp , exception ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; if ( WPG_Palette . StartIndex > WPG_Palette . NumOfEntries\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-400 static void Sp_replace_regexp ( js_State * J ) { js_Regexp * re ; const char * source , * s , * r ; js_Buffer * sb = NULL ; int n , x ; Resub m ; source = checkstring ( J , 0 ) ; re = js_toregexp ( J , 1 ) ; <S2SV_StartBug> if ( js_regexec ( re -> prog , source , & m , 0 ) ) { <S2SV_EndBug> js_copy ( J , 0 ) ; return ; } re -> last = 0 ; loop : s = m . sub [ 0 ] . sp ; n = m . sub [ 0 ] . ep - m . sub [ 0 ] . sp ; if ( js_iscallable ( J , 2 ) ) { js_copy ( J , 2 ) ; js_pushundefined ( J ) ; for ( x = 0 ; m . sub [ x ] . sp ; ++ x ) js_pushlstring ( J , m . sub [ x ] . sp , m . sub [ x ] . ep - m . sub [ x ] . sp ) ; js_pushnumber ( J , s - source ) ; js_copy ( J , 0 ) ; js_call ( J , 2 + x ) ; r = js_tostring ( J , - 1 ) ; js_putm ( J , & sb , source , s ) ; js_puts ( J , & sb , r ) ; js_pop ( J , 1 ) ; } else { r = js_tostring ( J , 2 ) ; js_putm ( J , & sb , source , s ) ; while ( * r ) { if ( * r == '$' ) { switch ( * ( ++ r ) ) { case 0 : -- r ; case '$' : js_putc ( J , & sb , '$' ) ; break ; case '`' : js_putm ( J , & sb , source , s ) ; break ; case '\\\\'' : js_puts ( J , & sb , s + n ) ; break ; case '&' : js_putm ( J , & sb , s , s + n ) ; break ; case '0' : case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : x = * r - '0' ; if ( r [ 1 ] >= '0' && r [ 1 ] <= '9' ) x = x * 10 + * ( ++ r ) - '0' ; if ( x > 0 && x < m . nsub ) { js_putm ( J , & sb , m . sub [ x ] . sp , m . sub [ x ] . ep ) ; } else { js_putc ( J , & sb , '$' ) ; if ( x > 10 ) { js_putc ( J , & sb , '0' + x / 10 ) ; js_putc ( J , & sb , '0' + x % 10 ) ; } else { js_putc ( J , & sb , '0' + x ) ; } } break ; default : js_putc ( J , & sb , '$' ) ; js_putc ( J , & sb , * r ) ; break ; } ++ r ; } else { js_putc ( J , & sb , * r ++ ) ; } } } if ( re -> flags & JS_REGEXP_G ) { source = m . sub [ 0 ] . ep ; if ( n == 0 ) { if ( * source ) js_putc ( J , & sb , * source ++ ) ; else goto end ; } <S2SV_StartBug> if ( ! js_regexec ( re -> prog , source , & m , REG_NOTBOL ) ) <S2SV_EndBug> goto loop ; } end : js_puts ( J , & sb , s + n ) ; js_putc ( J , & sb , 0 ) ; if ( js_try ( J ) ) { js_free ( J , sb ) ; js_throw ( J ) ; } js_pushstring ( J , sb ? sb -> s : \"\" ) ; js_endtry ( J ) ; js_free ( J , sb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( js_doregexec ( J , <S2SV_ModEnd> re -> prog <S2SV_ModStart> if ( ! js_doregexec ( J , <S2SV_ModEnd> re -> prog\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t enc624j600SendPacket ( NetInterface * interface , const NetBuffer * buffer , size_t offset , NetTxAncillary * ancillary ) { size_t length ; length = netBufferGetLength ( buffer ) - offset ; if ( length > 1536 ) { osSetEvent ( & interface -> nicTxEvent ) ; return ERROR_INVALID_LENGTH ; } if ( ! interface -> linkState ) { osSetEvent ( & interface -> nicTxEvent ) ; return NO_ERROR ; } <S2SV_StartBug> if ( enc624j600ReadReg ( interface , ENC624J600_REG_ECON1 ) & ECON1_TXRTS ) <S2SV_EndBug> { return ERROR_FAILURE ; } <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_EGPWRPT , ENC624J600_TX_BUFFER_START ) ; <S2SV_EndBug> enc624j600WriteBuffer ( interface , ENC624J600_CMD_WGPDATA , buffer , offset ) ; <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_ETXST , ENC624J600_TX_BUFFER_START ) ; <S2SV_EndBug> <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_ETXLEN , length ) ; <S2SV_EndBug> <S2SV_StartBug> enc624j600ClearBit ( interface , ENC624J600_REG_EIR , EIR_TXIF | EIR_TXABTIF ) ; <S2SV_EndBug> <S2SV_StartBug> enc624j600SetBit ( interface , ENC624J600_REG_ECON1 , ECON1_TXRTS ) ; <S2SV_EndBug> return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC624J600_ECON1 ) & ENC624J600_ECON1_TXRTS <S2SV_ModEnd> ) { return <S2SV_ModStart> ( interface , ENC624J600_EGPWRPT <S2SV_ModEnd> , ENC624J600_TX_BUFFER_START ) <S2SV_ModStart> ( interface , ENC624J600_ETXST <S2SV_ModEnd> , ENC624J600_TX_BUFFER_START ) <S2SV_ModStart> ( interface , ENC624J600_ETXLEN <S2SV_ModEnd> , length ) <S2SV_ModStart> ( interface , ENC624J600_EIR , ENC624J600_EIR_TXIF | ENC624J600_EIR_TXABTIF <S2SV_ModEnd> ) ; enc624j600SetBit <S2SV_ModStart> ( interface , ENC624J600_ECON1 , ENC624J600_ECON1_TXRTS <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13203\n\n```\nCWE-200 WORD32 ih264d_parse_sei_message ( dec_struct_t * ps_dec , dec_bit_stream_t * ps_bitstrm ) { UWORD32 ui4_payload_type , ui4_payload_size ; UWORD32 u4_bits ; WORD32 i4_status = 0 ; do { ui4_payload_type = 0 ; u4_bits = ih264d_get_bits_h264 ( ps_bitstrm , 8 ) ; <S2SV_StartBug> while ( 0xff == u4_bits ) <S2SV_EndBug> { u4_bits = ih264d_get_bits_h264 ( ps_bitstrm , 8 ) ; ui4_payload_type += 255 ; } ui4_payload_type += u4_bits ; ui4_payload_size = 0 ; u4_bits = ih264d_get_bits_h264 ( ps_bitstrm , 8 ) ; <S2SV_StartBug> while ( 0xff == u4_bits ) <S2SV_EndBug> { u4_bits = ih264d_get_bits_h264 ( ps_bitstrm , 8 ) ; ui4_payload_size += 255 ; } ui4_payload_size += u4_bits ; i4_status = ih264d_parse_sei_payload ( ps_bitstrm , ui4_payload_type , ui4_payload_size , ps_dec ) ; if ( i4_status == - 1 ) { i4_status = 0 ; break ; } if ( i4_status != OK ) return i4_status ; if ( ih264d_check_byte_aligned ( ps_bitstrm ) == 0 ) { u4_bits = ih264d_get_bit_h264 ( ps_bitstrm ) ; if ( 0 == u4_bits ) { H264_DEC_DEBUG_PRINT ( \"\\\\nError<S2SV_blank>in<S2SV_blank>parsing<S2SV_blank>SEI<S2SV_blank>message\" ) ; } <S2SV_StartBug> while ( 0 == ih264d_check_byte_aligned ( ps_bitstrm ) ) <S2SV_EndBug> { u4_bits = ih264d_get_bit_h264 ( ps_bitstrm ) ; if ( u4_bits ) { H264_DEC_DEBUG_PRINT ( \"\\\\nError<S2SV_blank>in<S2SV_blank>parsing<S2SV_blank>SEI<S2SV_blank>message\" ) ; } } } } while ( ps_bitstrm -> u4_ofst < ps_bitstrm -> u4_max_ofst ) ; return ( i4_status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0xff == u4_bits && ! EXCEED_OFFSET ( ps_bitstrm ) <S2SV_ModStart> 0xff == u4_bits && ! EXCEED_OFFSET ( ps_bitstrm ) <S2SV_ModStart> 0 == ih264d_check_byte_aligned ( ps_bitstrm ) && ! EXCEED_OFFSET\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5354\n\n```\nCWE-476 static int dissect_usb_video_control_interface_descriptor ( proto_tree * parent_tree , tvbuff_t * tvb , guint8 descriptor_len , packet_info * pinfo , usb_conv_info_t * usb_conv_info ) { video_conv_info_t * video_conv_info = NULL ; video_entity_t * entity = NULL ; proto_item * item = NULL ; proto_item * subtype_item = NULL ; proto_tree * tree = NULL ; guint8 entity_id = 0 ; guint16 terminal_type = 0 ; int offset = 0 ; guint8 subtype ; subtype = tvb_get_guint8 ( tvb , offset + 2 ) ; if ( parent_tree ) { const gchar * subtype_str ; subtype_str = val_to_str_ext ( subtype , & vc_if_descriptor_subtypes_ext , \"Unknown<S2SV_blank>(0x%x)\" ) ; tree = proto_tree_add_subtree_format ( parent_tree , tvb , offset , descriptor_len , ett_descriptor_video_control , & item , \"VIDEO<S2SV_blank>CONTROL<S2SV_blank>INTERFACE<S2SV_blank>DESCRIPTOR<S2SV_blank>[%s]\" , subtype_str ) ; } dissect_usb_descriptor_header ( tree , tvb , offset , & vid_descriptor_type_vals_ext ) ; subtype_item = proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_subtype , tvb , offset + 2 , 1 , ENC_LITTLE_ENDIAN ) ; offset += 3 ; if ( subtype == VC_HEADER ) { guint8 num_vs_interfaces ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_bcdUVC , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_vid_ifdesc_wTotalLength , tvb , offset + 2 , 2 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_dwClockFrequency , tvb , offset + 4 , 4 , ENC_LITTLE_ENDIAN ) ; num_vs_interfaces = tvb_get_guint8 ( tvb , offset + 8 ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_bInCollection , tvb , offset + 8 , 1 , ENC_LITTLE_ENDIAN ) ; if ( num_vs_interfaces > 0 ) { proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_baInterfaceNr , tvb , offset + 9 , num_vs_interfaces , ENC_NA ) ; } offset += 9 + num_vs_interfaces ; } else if ( ( subtype == VC_INPUT_TERMINAL ) || ( subtype == VC_OUTPUT_TERMINAL ) ) { entity_id = tvb_get_guint8 ( tvb , offset ) ; terminal_type = tvb_get_letohs ( tvb , offset + 1 ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_terminal_id , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_terminal_type , tvb , offset + 1 , 2 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_assoc_terminal , tvb , offset + 3 , 1 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; if ( subtype == VC_OUTPUT_TERMINAL ) { proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_src_id , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; ++ offset ; } proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_iTerminal , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; ++ offset ; if ( subtype == VC_INPUT_TERMINAL ) { if ( terminal_type == ITT_CAMERA ) { offset = dissect_usb_video_camera_terminal ( tree , tvb , offset ) ; } else if ( terminal_type == ITT_MEDIA_TRANSPORT_INPUT ) { } } if ( subtype == VC_OUTPUT_TERMINAL ) { if ( terminal_type == OTT_MEDIA_TRANSPORT_OUTPUT ) { } } } else { entity_id = tvb_get_guint8 ( tvb , offset ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_unit_id , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; ++ offset ; if ( subtype == VC_PROCESSING_UNIT ) { offset = dissect_usb_video_processing_unit ( tree , tvb , offset ) ; } else if ( subtype == VC_SELECTOR_UNIT ) { offset = dissect_usb_video_selector_unit ( tree , tvb , offset ) ; } else if ( subtype == VC_EXTENSION_UNIT ) { offset = dissect_usb_video_extension_unit ( tree , tvb , offset ) ; } else if ( subtype == VC_ENCODING_UNIT ) { } else { expert_add_info_format ( pinfo , subtype_item , & ei_usb_vid_subtype_unknown , \"Unknown<S2SV_blank>VC<S2SV_blank>subtype<S2SV_blank>%u\" , subtype ) ; } } if ( offset < descriptor_len ) { proto_tree_add_item ( tree , hf_usb_vid_descriptor_data , tvb , offset , descriptor_len - offset , ENC_NA ) ; } if ( entity_id != 0 ) proto_item_append_text ( item , \"<S2SV_blank>(Entity<S2SV_blank>%d)\" , entity_id ) ; if ( subtype != VC_HEADER && usb_conv_info ) { usb_conv_info = get_usb_iface_conv_info ( pinfo , usb_conv_info -> interfaceNum ) ; video_conv_info = ( video_conv_info_t * ) usb_conv_info -> class_data ; if ( ! video_conv_info ) { video_conv_info = wmem_new ( wmem_file_scope ( ) , video_conv_info_t ) ; video_conv_info -> entities = wmem_tree_new ( wmem_file_scope ( ) ) ; usb_conv_info -> class_data = video_conv_info ; <S2SV_StartBug> } <S2SV_EndBug> entity = ( video_entity_t * ) wmem_tree_lookup32 ( video_conv_info -> entities , entity_id ) ; if ( ! entity ) { entity = wmem_new ( wmem_file_scope ( ) , video_entity_t ) ; entity -> entityID = entity_id ; entity -> subtype = subtype ; entity -> terminalType = terminal_type ; wmem_tree_insert32 ( video_conv_info -> entities , entity_id , entity ) ; } } return descriptor_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = video_conv_info ; usb_conv_info -> class_data_type = USB_CONV_VIDEO ; } else if ( usb_conv_info -> class_data_type != USB_CONV_VIDEO ) { return descriptor_len ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1528\n\n```\nCWE-189 native_handle_t * native_handle_create ( int numFds , int numInts ) { <S2SV_StartBug> native_handle_t * h = malloc ( <S2SV_EndBug> <S2SV_StartBug> sizeof ( native_handle_t ) + sizeof ( int ) * ( numFds + numInts ) ) ; <S2SV_EndBug> if ( h ) { h -> version = sizeof ( native_handle_t ) ; h -> numFds = numFds ; h -> numInts = numInts ; } return h ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> numInts ) { if ( numFds < 0 || numInts < 0 || numFds > kMaxNativeFds || numInts > kMaxNativeInts ) { return NULL ; } size_t mallocSize = <S2SV_ModEnd> sizeof ( native_handle_t <S2SV_ModStart> native_handle_t ) + ( <S2SV_ModStart> + numInts ) ) ; native_handle_t * h = malloc ( mallocSize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3985\n\n```\nCWE-119 void * getHTTPResponse ( int s , int * size ) { char buf [ 2048 ] ; int n ; int endofheaders = 0 ; int chunked = 0 ; int content_length = - 1 ; unsigned int chunksize = 0 ; unsigned int bytestocopy = 0 ; char * header_buf ; unsigned int header_buf_len = 2048 ; unsigned int header_buf_used = 0 ; char * content_buf ; unsigned int content_buf_len = 2048 ; unsigned int content_buf_used = 0 ; char chunksize_buf [ 32 ] ; unsigned int chunksize_buf_index ; header_buf = malloc ( header_buf_len ) ; content_buf = malloc ( content_buf_len ) ; chunksize_buf [ 0 ] = '\\\\0' ; chunksize_buf_index = 0 ; while ( ( n = receivedata ( s , buf , 2048 , 5000 , NULL ) ) > 0 ) { if ( endofheaders == 0 ) { int i ; int linestart = 0 ; int colon = 0 ; int valuestart = 0 ; if ( header_buf_used + n > header_buf_len ) { header_buf = realloc ( header_buf , header_buf_used + n ) ; header_buf_len = header_buf_used + n ; } memcpy ( header_buf + header_buf_used , buf , n ) ; header_buf_used += n ; i = 0 ; while ( i < ( ( int ) header_buf_used - 1 ) && ( endofheaders == 0 ) ) { if ( header_buf [ i ] == '\\\\r' ) { i ++ ; if ( header_buf [ i ] == '\\\\n' ) { i ++ ; if ( i < ( int ) header_buf_used && header_buf [ i ] == '\\\\r' ) { i ++ ; if ( i < ( int ) header_buf_used && header_buf [ i ] == '\\\\n' ) { endofheaders = i + 1 ; } } } } else if ( header_buf [ i ] == '\\\\n' ) { i ++ ; if ( header_buf [ i ] == '\\\\n' ) { endofheaders = i + 1 ; } } i ++ ; } if ( endofheaders == 0 ) continue ; for ( i = 0 ; i < endofheaders - 1 ; i ++ ) { if ( colon <= linestart && header_buf [ i ] == ':' ) { colon = i ; while ( i < ( endofheaders - 1 ) && ( header_buf [ i + 1 ] == '<S2SV_blank>' || header_buf [ i + 1 ] == '\\\\t' ) ) i ++ ; valuestart = i + 1 ; } else if ( header_buf [ i ] == '\\\\r' || header_buf [ i ] == '\\\\n' ) { if ( colon > linestart && valuestart > colon ) { # ifdef DEBUG printf ( \"header=\\'%.*s\\',<S2SV_blank>value=\\'%.*s\\'\\\\n\" , colon - linestart , header_buf + linestart , i - valuestart , header_buf + valuestart ) ; # endif if ( 0 == strncasecmp ( header_buf + linestart , \"content-length\" , colon - linestart ) ) { content_length = atoi ( header_buf + valuestart ) ; # ifdef DEBUG printf ( \"Content-Length:<S2SV_blank>%d\\\\n\" , content_length ) ; # endif } else if ( 0 == strncasecmp ( header_buf + linestart , \"transfer-encoding\" , colon - linestart ) && 0 == strncasecmp ( header_buf + valuestart , \"chunked\" , 7 ) ) { # ifdef DEBUG printf ( \"chunked<S2SV_blank>transfer-encoding!\\\\n\" ) ; # endif chunked = 1 ; } } <S2SV_StartBug> while ( header_buf [ i ] == '\\\\r' || header_buf [ i ] == '\\\\n' ) <S2SV_EndBug> i ++ ; linestart = i ; colon = linestart ; valuestart = 0 ; } } n = header_buf_used - endofheaders ; memcpy ( buf , header_buf + endofheaders , n ) ; } if ( endofheaders ) { if ( chunked ) { int i = 0 ; while ( i < n ) { if ( chunksize == 0 ) { if ( chunksize_buf_index == 0 ) { if ( i < n && buf [ i ] == '\\\\r' ) i ++ ; if ( i < n && buf [ i ] == '\\\\n' ) i ++ ; } while ( i < n && isxdigit ( buf [ i ] ) && chunksize_buf_index < ( sizeof ( chunksize_buf ) - 1 ) ) { chunksize_buf [ chunksize_buf_index ++ ] = buf [ i ] ; chunksize_buf [ chunksize_buf_index ] = '\\\\0' ; i ++ ; } while ( i < n && buf [ i ] != '\\\\r' && buf [ i ] != '\\\\n' ) i ++ ; if ( i < n && buf [ i ] == '\\\\r' ) i ++ ; if ( i < n && buf [ i ] == '\\\\n' ) { unsigned int j ; for ( j = 0 ; j < chunksize_buf_index ; j ++ ) { if ( chunksize_buf [ j ] >= '0' && chunksize_buf [ j ] <= '9' ) chunksize = ( chunksize << 4 ) + ( chunksize_buf [ j ] - '0' ) ; else chunksize = ( chunksize << 4 ) + ( ( chunksize_buf [ j ] | 32 ) - 'a' + 10 ) ; } chunksize_buf [ 0 ] = '\\\\0' ; chunksize_buf_index = 0 ; i ++ ; } else { continue ; } # ifdef DEBUG printf ( \"chunksize<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(%x)\\\\n\" , chunksize , chunksize ) ; # endif if ( chunksize == 0 ) { # ifdef DEBUG printf ( \"end<S2SV_blank>of<S2SV_blank>HTTP<S2SV_blank>content<S2SV_blank>-<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , i , n ) ; # endif goto end_of_stream ; } } bytestocopy = ( ( int ) chunksize < ( n - i ) ) ? chunksize : ( unsigned int ) ( n - i ) ; if ( ( content_buf_used + bytestocopy ) > content_buf_len ) { if ( content_length >= ( int ) ( content_buf_used + bytestocopy ) ) { content_buf_len = content_length ; } else { content_buf_len = content_buf_used + bytestocopy ; } content_buf = ( char * ) realloc ( ( void * ) content_buf , content_buf_len ) ; } memcpy ( content_buf + content_buf_used , buf + i , bytestocopy ) ; content_buf_used += bytestocopy ; i += bytestocopy ; chunksize -= bytestocopy ; } } else { if ( content_length > 0 && ( int ) ( content_buf_used + n ) > content_length ) { n = content_length - content_buf_used ; } if ( content_buf_used + n > content_buf_len ) { if ( content_length >= ( int ) ( content_buf_used + n ) ) { content_buf_len = content_length ; } else { content_buf_len = content_buf_used + n ; } content_buf = ( char * ) realloc ( ( void * ) content_buf , content_buf_len ) ; } memcpy ( content_buf + content_buf_used , buf , n ) ; content_buf_used += n ; } } if ( content_length > 0 && ( int ) content_buf_used >= content_length ) { # ifdef DEBUG printf ( \"End<S2SV_blank>of<S2SV_blank>HTTP<S2SV_blank>content\\\\n\" ) ; # endif break ; } } end_of_stream : free ( header_buf ) ; header_buf = NULL ; * size = content_buf_used ; if ( content_buf_used == 0 ) { free ( content_buf ) ; content_buf = NULL ; } return content_buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } while ( ( i < ( int ) header_buf_used ) && ( <S2SV_ModStart> ] == '\\\\n' )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * setkey_principal3_2_svc ( setkey3_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( ! ( CHANGEPW_SERVICE ( rqstp ) ) && kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_SETKEY , arg -> princ , NULL ) ) { ret . code = kadm5_setkey_principal_3 ( ( void * ) handle , arg -> princ , arg -> keepold , arg -> n_ks_tuple , arg -> ks_tuple , arg -> keyblocks , arg -> n_keys ) ; } else { log_unauth ( \"kadm5_setkey_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_SETKEY ; } if ( ret . code != KADM5_AUTH_SETKEY ) { if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_setkey_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7284\n\n```\nCWE-200 static void __net_random_once_deferred ( struct work_struct * w ) { struct __net_random_once_work * work = container_of ( w , struct __net_random_once_work , work ) ; <S2SV_StartBug> if ( ! static_key_enabled ( work -> key ) ) <S2SV_EndBug> static_key_slow_inc ( work -> key ) ; kfree ( work ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> work ) ; BUG_ON <S2SV_ModEnd> ( ! static_key_enabled <S2SV_ModStart> key ) ) ; static_key_slow_dec <S2SV_ModEnd> ( work ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 bool_t mqttSnClientIsShortTopicName ( const char_t * topicName ) { bool_t res ; res = FALSE ; if ( osStrlen ( topicName ) == 2 ) { <S2SV_StartBug> if ( strchr ( topicName , '#' ) == NULL && strchr ( topicName , '+' ) == NULL ) <S2SV_EndBug> { res = TRUE ; } } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( osStrchr <S2SV_ModEnd> ( topicName , <S2SV_ModStart> == NULL && osStrchr <S2SV_ModEnd> ( topicName ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2847\n\n```\nCWE-399 struct pipe_inode_info * alloc_pipe_info ( void ) { struct pipe_inode_info * pipe ; pipe = kzalloc ( sizeof ( struct pipe_inode_info ) , GFP_KERNEL ) ; if ( pipe ) { <S2SV_StartBug> pipe -> bufs = kzalloc ( sizeof ( struct pipe_buffer ) * PIPE_DEF_BUFFERS , GFP_KERNEL ) ; <S2SV_EndBug> if ( pipe -> bufs ) { init_waitqueue_head ( & pipe -> wait ) ; pipe -> r_counter = pipe -> w_counter = 1 ; <S2SV_StartBug> pipe -> buffers = PIPE_DEF_BUFFERS ; <S2SV_EndBug> mutex_init ( & pipe -> mutex ) ; return pipe ; } <S2SV_StartBug> kfree ( pipe ) ; <S2SV_EndBug> } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pipe ) { unsigned long pipe_bufs = PIPE_DEF_BUFFERS ; struct user_struct * user = get_current_user ( ) ; if ( ! too_many_pipe_buffers_hard ( user ) ) { if ( too_many_pipe_buffers_soft ( user ) ) pipe_bufs = 1 ; <S2SV_ModStart> pipe_buffer ) * pipe_bufs <S2SV_ModEnd> , GFP_KERNEL ) <S2SV_ModStart> GFP_KERNEL ) ; } <S2SV_ModStart> -> buffers = pipe_bufs ; pipe -> user = user ; account_pipe_buffers ( pipe , 0 , pipe_bufs ) <S2SV_ModEnd> ; mutex_init ( <S2SV_ModStart> pipe ; } free_uid ( user ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14394\n\n```\nCWE-369 int ff_mov_write_packet ( AVFormatContext * s , AVPacket * pkt ) { MOVMuxContext * mov = s -> priv_data ; AVIOContext * pb = s -> pb ; MOVTrack * trk = & mov -> tracks [ pkt -> stream_index ] ; AVCodecParameters * par = trk -> par ; unsigned int samples_in_chunk = 0 ; int size = pkt -> size , ret = 0 ; uint8_t * reformatted_data = NULL ; ret = check_pkt ( s , pkt ) ; if ( ret < 0 ) return ret ; if ( mov -> flags & FF_MOV_FLAG_FRAGMENT ) { int ret ; if ( mov -> moov_written || mov -> flags & FF_MOV_FLAG_EMPTY_MOOV ) { if ( mov -> frag_interleave && mov -> fragments > 0 ) { if ( trk -> entry - trk -> entries_flushed >= mov -> frag_interleave ) { if ( ( ret = mov_flush_fragment_interleaving ( s , trk ) ) < 0 ) return ret ; } } if ( ! trk -> mdat_buf ) { if ( ( ret = avio_open_dyn_buf ( & trk -> mdat_buf ) ) < 0 ) return ret ; } pb = trk -> mdat_buf ; } else { if ( ! mov -> mdat_buf ) { if ( ( ret = avio_open_dyn_buf ( & mov -> mdat_buf ) ) < 0 ) return ret ; } pb = mov -> mdat_buf ; } } if ( par -> codec_id == AV_CODEC_ID_AMR_NB ) { static const uint16_t packed_size [ 16 ] = { 13 , 14 , 16 , 18 , 20 , 21 , 27 , 32 , 6 , 0 , 0 , 0 , 0 , 0 , 0 , 1 } ; int len = 0 ; while ( len < size && samples_in_chunk < 100 ) { len += packed_size [ ( pkt -> data [ len ] >> 3 ) & 0x0F ] ; samples_in_chunk ++ ; } if ( samples_in_chunk > 1 ) { av_log ( s , AV_LOG_ERROR , \"fatal<S2SV_blank>error,<S2SV_blank>input<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>single<S2SV_blank>packet,<S2SV_blank>implement<S2SV_blank>a<S2SV_blank>AVParser<S2SV_blank>for<S2SV_blank>it\\\\n\" ) ; return - 1 ; } } else if ( par -> codec_id == AV_CODEC_ID_ADPCM_MS || par -> codec_id == AV_CODEC_ID_ADPCM_IMA_WAV ) { samples_in_chunk = trk -> par -> frame_size ; } else if ( trk -> sample_size ) samples_in_chunk = size / trk -> sample_size ; else samples_in_chunk = 1 ; <S2SV_StartBug> if ( trk -> vos_len == 0 && par -> extradata_size > 0 && <S2SV_EndBug> ! TAG_IS_AVCI ( trk -> tag ) && ( par -> codec_id != AV_CODEC_ID_DNXHD ) ) { trk -> vos_len = par -> extradata_size ; trk -> vos_data = av_malloc ( trk -> vos_len ) ; if ( ! trk -> vos_data ) { ret = AVERROR ( ENOMEM ) ; goto err ; } memcpy ( trk -> vos_data , par -> extradata , trk -> vos_len ) ; } if ( par -> codec_id == AV_CODEC_ID_AAC && pkt -> size > 2 && ( AV_RB16 ( pkt -> data ) & 0xfff0 ) == 0xfff0 ) { if ( ! s -> streams [ pkt -> stream_index ] -> nb_frames ) { av_log ( s , AV_LOG_ERROR , \"Malformed<S2SV_blank>AAC<S2SV_blank>bitstream<S2SV_blank>detected:<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>audio<S2SV_blank>bitstream<S2SV_blank>filter<S2SV_blank>\\'aac_adtstoasc\\'<S2SV_blank>to<S2SV_blank>fix<S2SV_blank>it<S2SV_blank>\" \"(\\'-bsf:a<S2SV_blank>aac_adtstoasc\\'<S2SV_blank>option<S2SV_blank>with<S2SV_blank>ffmpeg)\\\\n\" ) ; return - 1 ; } av_log ( s , AV_LOG_WARNING , \"aac<S2SV_blank>bitstream<S2SV_blank>error\\\\n\" ) ; } if ( par -> codec_id == AV_CODEC_ID_H264 && trk -> vos_len > 0 && * ( uint8_t * ) trk -> vos_data != 1 && ! TAG_IS_AVCI ( trk -> tag ) ) { if ( trk -> hint_track >= 0 && trk -> hint_track < mov -> nb_streams ) { ff_avc_parse_nal_units_buf ( pkt -> data , & reformatted_data , & size ) ; avio_write ( pb , reformatted_data , size ) ; } else { if ( trk -> cenc . aes_ctr ) { size = ff_mov_cenc_avc_parse_nal_units ( & trk -> cenc , pb , pkt -> data , size ) ; if ( size < 0 ) { ret = size ; goto err ; } } else { size = ff_avc_parse_nal_units ( pb , pkt -> data , pkt -> size ) ; } } } else if ( par -> codec_id == AV_CODEC_ID_HEVC && trk -> vos_len > 6 && ( AV_RB24 ( trk -> vos_data ) == 1 || AV_RB32 ( trk -> vos_data ) == 1 ) ) { if ( trk -> hint_track >= 0 && trk -> hint_track < mov -> nb_streams ) { ff_hevc_annexb2mp4_buf ( pkt -> data , & reformatted_data , & size , 0 , NULL ) ; avio_write ( pb , reformatted_data , size ) ; } else { size = ff_hevc_annexb2mp4 ( pb , pkt -> data , pkt -> size , 0 , NULL ) ; } # if CONFIG_AC3_PARSER } else if ( par -> codec_id == AV_CODEC_ID_EAC3 ) { size = handle_eac3 ( mov , pkt , trk ) ; if ( size < 0 ) return size ; else if ( ! size ) goto end ; avio_write ( pb , pkt -> data , size ) ; # endif } else { if ( trk -> cenc . aes_ctr ) { if ( par -> codec_id == AV_CODEC_ID_H264 && par -> extradata_size > 4 ) { int nal_size_length = ( par -> extradata [ 4 ] & 0x3 ) + 1 ; ret = ff_mov_cenc_avc_write_nal_units ( s , & trk -> cenc , nal_size_length , pb , pkt -> data , size ) ; } else { ret = ff_mov_cenc_write_packet ( & trk -> cenc , pb , pkt -> data , size ) ; } if ( ret ) { goto err ; } } else { avio_write ( pb , pkt -> data , size ) ; } } if ( ( par -> codec_id == AV_CODEC_ID_DNXHD || par -> codec_id == AV_CODEC_ID_AC3 ) && ! trk -> vos_len ) { trk -> vos_len = size ; trk -> vos_data = av_malloc ( size ) ; if ( ! trk -> vos_data ) { ret = AVERROR ( ENOMEM ) ; goto err ; } memcpy ( trk -> vos_data , pkt -> data , size ) ; } if ( trk -> entry >= trk -> cluster_capacity ) { unsigned new_capacity = 2 * ( trk -> entry + MOV_INDEX_CLUSTER_SIZE ) ; if ( av_reallocp_array ( & trk -> cluster , new_capacity , sizeof ( * trk -> cluster ) ) ) { ret = AVERROR ( ENOMEM ) ; goto err ; } trk -> cluster_capacity = new_capacity ; } trk -> cluster [ trk -> entry ] . pos = avio_tell ( pb ) - size ; trk -> cluster [ trk -> entry ] . samples_in_chunk = samples_in_chunk ; trk -> cluster [ trk -> entry ] . chunkNum = 0 ; trk -> cluster [ trk -> entry ] . size = size ; trk -> cluster [ trk -> entry ] . entries = samples_in_chunk ; trk -> cluster [ trk -> entry ] . dts = pkt -> dts ; trk -> cluster [ trk -> entry ] . pts = pkt -> pts ; if ( ! trk -> entry && trk -> start_dts != AV_NOPTS_VALUE ) { if ( ! trk -> frag_discont ) { trk -> cluster [ trk -> entry ] . dts = trk -> start_dts + trk -> track_duration ; if ( ( mov -> flags & FF_MOV_FLAG_DASH && ! ( mov -> flags & FF_MOV_FLAG_GLOBAL_SIDX ) ) || mov -> mode == MODE_ISM ) pkt -> pts = pkt -> dts + trk -> end_pts - trk -> cluster [ trk -> entry ] . dts ; } else { trk -> frag_start = pkt -> dts - trk -> start_dts ; trk -> end_pts = AV_NOPTS_VALUE ; trk -> frag_discont = 0 ; } } if ( ! trk -> entry && trk -> start_dts == AV_NOPTS_VALUE && ! mov -> use_editlist && s -> avoid_negative_ts == AVFMT_AVOID_NEG_TS_MAKE_ZERO ) { trk -> cluster [ trk -> entry ] . dts = trk -> start_dts = 0 ; } if ( trk -> start_dts == AV_NOPTS_VALUE ) { trk -> start_dts = pkt -> dts ; if ( trk -> frag_discont ) { if ( mov -> use_editlist ) { trk -> frag_start = pkt -> pts ; trk -> start_dts = pkt -> dts - pkt -> pts ; } else { trk -> frag_start = pkt -> dts ; trk -> start_dts = 0 ; } trk -> frag_discont = 0 ; } else if ( pkt -> dts && mov -> moov_written ) av_log ( s , AV_LOG_WARNING , \"Track<S2SV_blank>%d<S2SV_blank>starts<S2SV_blank>with<S2SV_blank>a<S2SV_blank>nonzero<S2SV_blank>dts<S2SV_blank>%\" PRId64 \",<S2SV_blank>while<S2SV_blank>the<S2SV_blank>moov<S2SV_blank>\" \"already<S2SV_blank>has<S2SV_blank>been<S2SV_blank>written.<S2SV_blank>Set<S2SV_blank>the<S2SV_blank>delay_moov<S2SV_blank>flag<S2SV_blank>to<S2SV_blank>handle<S2SV_blank>\" \"this<S2SV_blank>case.\\\\n\" , pkt -> stream_index , pkt -> dts ) ; } trk -> track_duration = pkt -> dts - trk -> start_dts + pkt -> duration ; trk -> last_sample_is_subtitle_end = 0 ; if ( pkt -> pts == AV_NOPTS_VALUE ) { av_log ( s , AV_LOG_WARNING , \"pts<S2SV_blank>has<S2SV_blank>no<S2SV_blank>value\\\\n\" ) ; pkt -> pts = pkt -> dts ; } if ( pkt -> dts != pkt -> pts ) trk -> flags |= MOV_TRACK_CTTS ; trk -> cluster [ trk -> entry ] . cts = pkt -> pts - pkt -> dts ; trk -> cluster [ trk -> entry ] . flags = 0 ; if ( trk -> start_cts == AV_NOPTS_VALUE ) trk -> start_cts = pkt -> pts - pkt -> dts ; if ( trk -> end_pts == AV_NOPTS_VALUE ) trk -> end_pts = trk -> cluster [ trk -> entry ] . dts + trk -> cluster [ trk -> entry ] . cts + pkt -> duration ; else trk -> end_pts = FFMAX ( trk -> end_pts , trk -> cluster [ trk -> entry ] . dts + trk -> cluster [ trk -> entry ] . cts + pkt -> duration ) ; if ( par -> codec_id == AV_CODEC_ID_VC1 ) { mov_parse_vc1_frame ( pkt , trk ) ; } else if ( pkt -> flags & AV_PKT_FLAG_KEY ) { if ( mov -> mode == MODE_MOV && par -> codec_id == AV_CODEC_ID_MPEG2VIDEO && trk -> entry > 0 ) { mov_parse_mpeg2_frame ( pkt , & trk -> cluster [ trk -> entry ] . flags ) ; if ( trk -> cluster [ trk -> entry ] . flags & MOV_PARTIAL_SYNC_SAMPLE ) trk -> flags |= MOV_TRACK_STPS ; } else { trk -> cluster [ trk -> entry ] . flags = MOV_SYNC_SAMPLE ; } if ( trk -> cluster [ trk -> entry ] . flags & MOV_SYNC_SAMPLE ) trk -> has_keyframes ++ ; } if ( pkt -> flags & AV_PKT_FLAG_DISPOSABLE ) { trk -> cluster [ trk -> entry ] . flags |= MOV_DISPOSABLE_SAMPLE ; trk -> has_disposable ++ ; } trk -> entry ++ ; trk -> sample_count += samples_in_chunk ; mov -> mdat_size += size ; if ( trk -> hint_track >= 0 && trk -> hint_track < mov -> nb_streams ) ff_mov_add_hinted_packet ( s , pkt , trk -> hint_track , trk -> entry , reformatted_data , size ) ; end : err : av_free ( reformatted_data ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( samples_in_chunk < 1 ) { av_log ( s , AV_LOG_ERROR , \"fatal<S2SV_blank>error,<S2SV_blank>input<S2SV_blank>packet<S2SV_blank>contains<S2SV_blank>no<S2SV_blank>samples\\\\n\" ) ; return AVERROR_PATCHWELCOME ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2870\n\n```\nCWE-399 void xsltGenerateIdFunction ( xmlXPathParserContextPtr ctxt , int nargs ) { <S2SV_StartBug> xmlNodePtr cur = NULL ; <S2SV_EndBug> long val ; xmlChar str [ 30 ] ; xmlDocPtr doc ; if ( nargs == 0 ) { cur = ctxt -> context -> node ; } else if ( nargs == 1 ) { <S2SV_StartBug> xmlXPathObjectPtr obj ; <S2SV_EndBug> xmlNodeSetPtr nodelist ; int i , ret ; if ( ( ctxt -> value == NULL ) || ( ctxt -> value -> type != XPATH_NODESET ) ) { ctxt -> error = XPATH_INVALID_TYPE ; xsltTransformError ( xsltXPathGetTransformContext ( ctxt ) , NULL , NULL , \"generate-id()<S2SV_blank>:<S2SV_blank>invalid<S2SV_blank>arg<S2SV_blank>expecting<S2SV_blank>a<S2SV_blank>node-set\\\\n\" ) ; return ; } obj = valuePop ( ctxt ) ; nodelist = obj -> nodesetval ; if ( ( nodelist == NULL ) || ( nodelist -> nodeNr <= 0 ) ) { xmlXPathFreeObject ( obj ) ; valuePush ( ctxt , xmlXPathNewCString ( \"\" ) ) ; return ; } cur = nodelist -> nodeTab [ 0 ] ; for ( i = 1 ; i < nodelist -> nodeNr ; i ++ ) { ret = xmlXPathCmpNodes ( cur , nodelist -> nodeTab [ i ] ) ; if ( ret == - 1 ) cur = nodelist -> nodeTab [ i ] ; } <S2SV_StartBug> xmlXPathFreeObject ( obj ) ; <S2SV_EndBug> } else { xsltTransformError ( xsltXPathGetTransformContext ( ctxt ) , NULL , NULL , \"generate-id()<S2SV_blank>:<S2SV_blank>invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>args<S2SV_blank>%d\\\\n\" , nargs ) ; ctxt -> error = XPATH_INVALID_ARITY ; return ; } if ( cur -> type != XML_NAMESPACE_DECL ) doc = cur -> doc ; else { xmlNsPtr ns = ( xmlNsPtr ) cur ; if ( ns -> context != NULL ) doc = ns -> context ; else doc = ctxt -> context -> doc ; } <S2SV_StartBug> val = ( long ) ( ( char * ) cur - ( char * ) doc ) ; <S2SV_EndBug> if ( val >= 0 ) { sprintf ( ( char * ) str , \"idp%ld\" , val ) ; } else { sprintf ( ( char * ) str , \"idm%ld\" , - val ) ; } valuePush ( ctxt , xmlXPathNewString ( str ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { xmlNodePtr cur = NULL ; xmlXPathObjectPtr obj <S2SV_ModStart> 1 ) { <S2SV_ModEnd> xmlNodeSetPtr nodelist ; <S2SV_ModStart> ] ; } <S2SV_ModEnd> } else { <S2SV_ModStart> doc ; } if ( obj ) xmlXPathFreeObject ( obj ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 long FS_FOpenFileRead ( const char * filename , fileHandle_t * file , qboolean uniqueFILE ) { searchpath_t * search ; long len ; <S2SV_StartBug> if ( ! fs_searchpaths ) <S2SV_EndBug> Com_Error ( ERR_FATAL , \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; <S2SV_StartBug> for ( search = fs_searchpaths ; search ; search = search -> next ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> len = FS_FOpenFileReadDir ( filename , search , file , uniqueFILE , qfalse ) ; if ( file == NULL ) { if ( len > 0 ) return len ; } else { if ( len >= 0 && * file ) return len ; } } # ifdef FS_MISSING if ( missingFiles ) fprintf ( missingFiles , \"%s\\\\n\" , filename ) ; # endif if ( file ) { * file = 0 ; return - 1 ; } else { return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long len ; qboolean isLocalConfig ; <S2SV_ModStart> \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; isLocalConfig = ! strcmp ( filename , \"autoexec.cfg\" ) || ! strcmp ( filename , Q3CONFIG_CFG ) ; <S2SV_ModStart> next ) { if ( isLocalConfig && search -> pack ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5489\n\n```\nCWE-200 static int mincore_unmapped_range ( unsigned long addr , unsigned long end , struct mm_walk * walk ) { <S2SV_StartBug> walk -> private += __mincore_unmapped_range ( addr , end , <S2SV_EndBug> walk -> vma , walk -> private ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> walk ) { unsigned char * vec = walk -> private ; unsigned long nr = ( end - addr ) >> PAGE_SHIFT ; memset ( vec , 0 , nr ) ; <S2SV_ModStart> -> private += nr <S2SV_ModEnd> ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 static inline void header_put_be_3byte ( SF_PRIVATE * psf , int x ) <S2SV_StartBug> { if ( psf -> headindex < SIGNED_SIZEOF ( psf -> header ) - 3 ) <S2SV_EndBug> <S2SV_StartBug> { psf -> header [ psf -> headindex ++ ] = ( x >> 16 ) ; <S2SV_EndBug> <S2SV_StartBug> psf -> header [ psf -> headindex ++ ] = ( x >> 8 ) ; <S2SV_EndBug> <S2SV_StartBug> psf -> header [ psf -> headindex ++ ] = x ; <S2SV_EndBug> <S2SV_StartBug> } ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x ) { <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . ptr [ <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> [ psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> [ psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> x ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 <S2SV_StartBug> static void <S2SV_EndBug> ast_clear ( AST_object * self ) { Py_CLEAR ( self -> dict ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> ast_clear ( AST_object <S2SV_ModStart> dict ) ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1833\n\n```\nCWE-264 static struct dentry * ecryptfs_mount ( struct file_system_type * fs_type , int flags , const char * dev_name , void * raw_data ) { struct super_block * s ; struct ecryptfs_sb_info * sbi ; struct ecryptfs_dentry_info * root_info ; const char * err = \"Getting<S2SV_blank>sb<S2SV_blank>failed\" ; struct inode * inode ; struct path path ; <S2SV_StartBug> int rc ; <S2SV_EndBug> sbi = kmem_cache_zalloc ( ecryptfs_sb_info_cache , GFP_KERNEL ) ; if ( ! sbi ) { rc = - ENOMEM ; goto out ; } <S2SV_StartBug> rc = ecryptfs_parse_options ( sbi , raw_data ) ; <S2SV_EndBug> if ( rc ) { err = \"Error<S2SV_blank>parsing<S2SV_blank>options\" ; goto out ; } s = sget ( fs_type , NULL , set_anon_super , NULL ) ; if ( IS_ERR ( s ) ) { rc = PTR_ERR ( s ) ; goto out ; } s -> s_flags = flags ; rc = bdi_setup_and_register ( & sbi -> bdi , \"ecryptfs\" , BDI_CAP_MAP_COPY ) ; if ( rc ) goto out1 ; ecryptfs_set_superblock_private ( s , sbi ) ; s -> s_bdi = & sbi -> bdi ; sbi = NULL ; s -> s_op = & ecryptfs_sops ; s -> s_d_op = & ecryptfs_dops ; err = \"Reading<S2SV_blank>sb<S2SV_blank>failed\" ; rc = kern_path ( dev_name , LOOKUP_FOLLOW | LOOKUP_DIRECTORY , & path ) ; if ( rc ) { ecryptfs_printk ( KERN_WARNING , \"kern_path()<S2SV_blank>failed\\\\n\" ) ; goto out1 ; } if ( path . dentry -> d_sb -> s_type == & ecryptfs_fs_type ) { rc = - EINVAL ; printk ( KERN_ERR \"Mount<S2SV_blank>on<S2SV_blank>filesystem<S2SV_blank>of<S2SV_blank>type<S2SV_blank>\" \"eCryptfs<S2SV_blank>explicitly<S2SV_blank>disallowed<S2SV_blank>due<S2SV_blank>to<S2SV_blank>\" \"known<S2SV_blank>incompatibilities\\\\n\" ) ; goto out_free ; } <S2SV_StartBug> ecryptfs_set_superblock_lower ( s , path . dentry -> d_sb ) ; <S2SV_EndBug> s -> s_maxbytes = path . dentry -> d_sb -> s_maxbytes ; s -> s_blocksize = path . dentry -> d_sb -> s_blocksize ; s -> s_magic = ECRYPTFS_SUPER_MAGIC ; inode = ecryptfs_get_inode ( path . dentry -> d_inode , s ) ; rc = PTR_ERR ( inode ) ; if ( IS_ERR ( inode ) ) goto out_free ; s -> s_root = d_alloc_root ( inode ) ; if ( ! s -> s_root ) { iput ( inode ) ; rc = - ENOMEM ; goto out_free ; } rc = - ENOMEM ; root_info = kmem_cache_zalloc ( ecryptfs_dentry_info_cache , GFP_KERNEL ) ; if ( ! root_info ) goto out_free ; ecryptfs_set_dentry_private ( s -> s_root , root_info ) ; ecryptfs_set_dentry_lower ( s -> s_root , path . dentry ) ; ecryptfs_set_dentry_lower_mnt ( s -> s_root , path . mnt ) ; s -> s_flags |= MS_ACTIVE ; return dget ( s -> s_root ) ; out_free : path_put ( & path ) ; out1 : deactivate_locked_super ( s ) ; out : if ( sbi ) { ecryptfs_destroy_mount_crypt_stat ( & sbi -> mount_crypt_stat ) ; kmem_cache_free ( ecryptfs_sb_info_cache , sbi ) ; } printk ( KERN_ERR \"%s;<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , err , rc ) ; return ERR_PTR ( rc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> path path ; uid_t check_ruid ; <S2SV_ModStart> sbi , raw_data , & check_ruid <S2SV_ModStart> out_free ; } if ( check_ruid && path . dentry -> d_inode -> i_uid != current_uid ( ) ) { rc = - EPERM ; printk ( KERN_ERR \"Mount<S2SV_blank>of<S2SV_blank>device<S2SV_blank>(uid:<S2SV_blank>%d)<S2SV_blank>not<S2SV_blank>owned<S2SV_blank>by<S2SV_blank>\" \"requested<S2SV_blank>user<S2SV_blank>(uid:<S2SV_blank>%d)\\\\n\" , path . dentry -> d_inode -> i_uid , current_uid ( ) ) ; goto out_free ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-9275\n\n```\nCWE-200 int check_user_token ( const char * authfile , const char * username , const char * otp_id , int verbose , FILE * debug_file ) { char buf [ 1024 ] ; char * s_user , * s_token ; int retval = AUTH_ERROR ; int fd ; struct stat st ; FILE * opwfile ; fd = open ( authfile , O_RDONLY , 0 ) ; if ( fd < 0 ) { if ( verbose ) D ( debug_file , \"Cannot<S2SV_blank>open<S2SV_blank>file:<S2SV_blank>%s<S2SV_blank>(%s)\" , authfile , strerror ( errno ) ) ; return retval ; } if ( fstat ( fd , & st ) < 0 ) { if ( verbose ) D ( debug_file , \"Cannot<S2SV_blank>stat<S2SV_blank>file:<S2SV_blank>%s<S2SV_blank>(%s)\" , authfile , strerror ( errno ) ) ; close ( fd ) ; return retval ; } if ( ! S_ISREG ( st . st_mode ) ) { if ( verbose ) D ( debug_file , \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>regular<S2SV_blank>file\" , authfile ) ; close ( fd ) ; return retval ; } opwfile = fdopen ( fd , \"r\" ) ; if ( opwfile == NULL ) { if ( verbose ) D ( debug_file , \"fdopen:<S2SV_blank>%s\" , strerror ( errno ) ) ; close ( fd ) ; return retval ; } retval = AUTH_NO_TOKENS ; while ( fgets ( buf , 1024 , opwfile ) ) { char * saveptr = NULL ; if ( buf [ strlen ( buf ) - 1 ] == '\\\\n' ) buf [ strlen ( buf ) - 1 ] = '\\\\0' ; if ( buf [ 0 ] == '#' ) { if ( verbose ) D ( debug_file , \"Skipping<S2SV_blank>comment<S2SV_blank>line:<S2SV_blank>%s\" , buf ) ; continue ; } if ( verbose ) D ( debug_file , \"Authorization<S2SV_blank>line:<S2SV_blank>%s\" , buf ) ; s_user = strtok_r ( buf , \":\" , & saveptr ) ; if ( s_user && strcmp ( username , s_user ) == 0 ) { if ( verbose ) D ( debug_file , \"Matched<S2SV_blank>user:<S2SV_blank>%s\" , s_user ) ; retval = AUTH_NOT_FOUND ; do { s_token = strtok_r ( NULL , \":\" , & saveptr ) ; if ( verbose ) D ( debug_file , \"Authorization<S2SV_blank>token:<S2SV_blank>%s\" , s_token ) ; if ( s_token && otp_id && strcmp ( otp_id , s_token ) == 0 ) { if ( verbose ) D ( debug_file , \"Match<S2SV_blank>user/token<S2SV_blank>as<S2SV_blank>%s/%s\" , username , otp_id ) ; <S2SV_StartBug> return AUTH_FOUND ; <S2SV_EndBug> } } while ( s_token != NULL ) ; } } fclose ( opwfile ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> otp_id ) ; fclose ( opwfile ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horAcc32 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint32 * wp = ( uint32 * ) cp0 ; tmsize_t wc = cc / 4 ; <S2SV_StartBug> assert ( ( cc % ( 4 * stride ) ) == 0 ) ; <S2SV_EndBug> if ( wc > stride ) { wc -= stride ; do { REPEAT4 ( stride , wp [ stride ] += wp [ 0 ] ; wp ++ ) wc -= stride ; } while ( wc > 0 ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horAcc32 ( TIFF <S2SV_ModStart> / 4 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horAcc32\" , \"%s\" , \"cc%(4*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( wc <S2SV_ModStart> ) ; } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15121\n\n```\nCWE-78 static inline int r_sys_mkdirp ( char * dir ) { int ret = 1 ; const char slash = DIRSEP ; char * path = dir ; char * ptr = path ; if ( * ptr == slash ) { ptr ++ ; } # if __SDB_WINDOWS__ char * p = strstr ( ptr , \":\\\\\\\\\" ) ; if ( p ) { <S2SV_StartBug> ptr = p + 2 ; <S2SV_EndBug> } # endif while ( ( ptr = strchr ( ptr , slash ) ) ) { * ptr = 0 ; if ( ! r_sys_mkdir ( path ) && r_sys_mkdir_failed ( ) ) { eprintf ( \"r_sys_mkdirp:<S2SV_blank>fail<S2SV_blank>\\'%s\\'<S2SV_blank>of<S2SV_blank>\\'%s\\'\\\\n\" , path , dir ) ; * ptr = slash ; return 0 ; } * ptr = slash ; ptr ++ ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = p + 3 <S2SV_ModEnd> ; } #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 static void tun_net_init ( struct net_device * dev ) { struct tun_struct * tun = netdev_priv ( dev ) ; switch ( tun -> flags & TUN_TYPE_MASK ) { case TUN_TUN_DEV : dev -> netdev_ops = & tun_netdev_ops ; dev -> hard_header_len = 0 ; dev -> addr_len = 0 ; dev -> mtu = 1500 ; dev -> type = ARPHRD_NONE ; dev -> flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST ; dev -> tx_queue_len = TUN_READQ_SIZE ; break ; case TUN_TAP_DEV : dev -> netdev_ops = & tap_netdev_ops ; ether_setup ( dev ) ; <S2SV_StartBug> random_ether_addr ( dev -> dev_addr ) ; <S2SV_EndBug> dev -> tx_queue_len = TUN_READQ_SIZE ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1179\n\n```\nCWE-264 static int walk_pmd_range ( pud_t * pud , unsigned long addr , unsigned long end , struct mm_walk * walk ) { pmd_t * pmd ; unsigned long next ; int err = 0 ; pmd = pmd_offset ( pud , addr ) ; do { again : next = pmd_addr_end ( addr , end ) ; if ( pmd_none ( * pmd ) ) { if ( walk -> pte_hole ) err = walk -> pte_hole ( addr , next , walk ) ; if ( err ) break ; continue ; } if ( walk -> pmd_entry ) err = walk -> pmd_entry ( pmd , addr , next , walk ) ; if ( err ) break ; if ( ! walk -> pte_entry ) continue ; split_huge_page_pmd ( walk -> mm , pmd ) ; <S2SV_StartBug> if ( pmd_none_or_clear_bad ( pmd ) ) <S2SV_EndBug> goto again ; err = walk_pte_range ( pmd , addr , next , walk ) ; if ( err ) break ; } while ( pmd ++ , addr = next , addr != end ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( pmd_none_or_trans_huge_or_clear_bad <S2SV_ModEnd> ( pmd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 IMPEG2D_ERROR_CODES_T impeg2d_dec_pic_hdr ( dec_state_t * ps_dec ) { stream_t * ps_stream ; ps_stream = & ps_dec -> s_bit_stream ; impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; impeg2d_bit_stream_get ( ps_stream , 10 ) ; ps_dec -> e_pic_type = ( e_pic_type_t ) impeg2d_bit_stream_get ( ps_stream , 3 ) ; if ( ( ps_dec -> e_pic_type < I_PIC ) || ( ps_dec -> e_pic_type > D_PIC ) ) { impeg2d_next_code ( ps_dec , PICTURE_START_CODE ) ; return IMPEG2D_INVALID_PIC_TYPE ; } impeg2d_bit_stream_get ( ps_stream , 16 ) ; if ( ps_dec -> e_pic_type == P_PIC || ps_dec -> e_pic_type == B_PIC ) { ps_dec -> u2_full_pel_forw_vector = impeg2d_bit_stream_get_bit ( ps_stream ) ; ps_dec -> u2_forw_f_code = impeg2d_bit_stream_get ( ps_stream , 3 ) ; } if ( ps_dec -> e_pic_type == B_PIC ) { ps_dec -> u2_full_pel_back_vector = impeg2d_bit_stream_get_bit ( ps_stream ) ; ps_dec -> u2_back_f_code = impeg2d_bit_stream_get ( ps_stream , 3 ) ; } if ( ps_dec -> u2_is_mpeg2 == 0 ) { ps_dec -> au2_f_code [ 0 ] [ 0 ] = ps_dec -> au2_f_code [ 0 ] [ 1 ] = ps_dec -> u2_forw_f_code ; ps_dec -> au2_f_code [ 1 ] [ 0 ] = ps_dec -> au2_f_code [ 1 ] [ 1 ] = ps_dec -> u2_back_f_code ; } <S2SV_StartBug> while ( impeg2d_bit_stream_nxt ( ps_stream , 1 ) == 1 ) <S2SV_EndBug> { impeg2d_bit_stream_get ( ps_stream , 9 ) ; } impeg2d_bit_stream_get_bit ( ps_stream ) ; impeg2d_next_start_code ( ps_dec ) ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) == 1 && ps_stream -> u4_offset < ps_stream -> u4_max_offset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 static enum hrtimer_restart posix_timer_fn ( struct hrtimer * timer ) { struct k_itimer * timr ; unsigned long flags ; int si_private = 0 ; enum hrtimer_restart ret = HRTIMER_NORESTART ; timr = container_of ( timer , struct k_itimer , it . real . timer ) ; spin_lock_irqsave ( & timr -> it_lock , flags ) ; timr -> it_active = 0 ; if ( timr -> it_interval != 0 ) si_private = ++ timr -> it_requeue_pending ; if ( posix_timer_event ( timr , si_private ) ) { if ( timr -> it_interval != 0 ) { ktime_t now = hrtimer_cb_get_time ( timer ) ; # ifdef CONFIG_HIGH_RES_TIMERS { ktime_t kj = NSEC_PER_SEC / HZ ; if ( timr -> it_interval < kj ) now = ktime_add ( now , kj ) ; } # endif <S2SV_StartBug> timr -> it_overrun += ( unsigned int ) <S2SV_EndBug> hrtimer_forward ( timer , now , timr -> it_interval ) ; ret = HRTIMER_RESTART ; ++ timr -> it_requeue_pending ; timr -> it_active = 1 ; } } unlock_timer ( timr , flags ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> it_overrun += <S2SV_ModEnd> hrtimer_forward ( timer\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13042\n\n```\nCWE-125 static int dhcpv6_print ( netdissect_options * ndo , const u_char * cp , u_int length , int indent ) { u_int i , t ; const u_char * tlv , * value ; uint16_t type , optlen ; i = 0 ; while ( i < length ) { <S2SV_StartBug> tlv = cp + i ; <S2SV_EndBug> type = EXTRACT_16BITS ( tlv ) ; optlen = EXTRACT_16BITS ( tlv + 2 ) ; value = tlv + 4 ; ND_PRINT ( ( ndo , \"\\\\n\" ) ) ; for ( t = indent ; t > 0 ; t -- ) ND_PRINT ( ( ndo , \"\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( dh6opt_str , \"Unknown\" , type ) ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>(%u)\" , optlen + 4 ) ) ; <S2SV_EndBug> switch ( type ) { case DH6OPT_DNS_SERVERS : case DH6OPT_SNTP_SERVERS : { if ( optlen % 16 != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , istr ) ) ; return - 1 ; } for ( t = 0 ; t < optlen ; t += 16 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , value + t ) ) ) ; } break ; case DH6OPT_DOMAIN_LIST : { const u_char * tp = value ; while ( tp < value + optlen ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ( tp = ns_nprint ( ndo , tp , value + optlen ) ) == NULL ) return - 1 ; } } break ; } i += 4 + optlen ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length ) { if ( i + 4 > length ) return - 1 ; <S2SV_ModStart> 4 ) ) ; if ( i + 4 + optlen > length ) return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_build_intra_predictors_mby_s_c ( MACROBLOCKD * x , unsigned char * yabove_row , unsigned char * yleft , int left_stride , unsigned char * ypred_ptr , int y_stride ) { unsigned char yleft_col [ 16 ] ; unsigned char ytop_left = yabove_row [ - 1 ] ; int r , c , i ; for ( i = 0 ; i < 16 ; i ++ ) { yleft_col [ i ] = yleft [ i * left_stride ] ; } switch ( x -> mode_info_context -> mbmi . mode ) { case DC_PRED : { int expected_dc ; int shift ; int average = 0 ; if ( x -> up_available || x -> left_available ) { if ( x -> up_available ) { for ( i = 0 ; i < 16 ; i ++ ) { average += yabove_row [ i ] ; } } if ( x -> left_available ) { for ( i = 0 ; i < 16 ; i ++ ) { average += yleft_col [ i ] ; } } shift = 3 + x -> up_available + x -> left_available ; expected_dc = ( average + ( 1 << ( shift - 1 ) ) ) >> shift ; } else { expected_dc = 128 ; } for ( r = 0 ; r < 16 ; r ++ ) { <S2SV_StartBug> vpx_memset ( ypred_ptr , expected_dc , 16 ) ; <S2SV_EndBug> ypred_ptr += y_stride ; } } break ; case V_PRED : { for ( r = 0 ; r < 16 ; r ++ ) { ( ( int * ) ypred_ptr ) [ 0 ] = ( ( int * ) yabove_row ) [ 0 ] ; ( ( int * ) ypred_ptr ) [ 1 ] = ( ( int * ) yabove_row ) [ 1 ] ; ( ( int * ) ypred_ptr ) [ 2 ] = ( ( int * ) yabove_row ) [ 2 ] ; ( ( int * ) ypred_ptr ) [ 3 ] = ( ( int * ) yabove_row ) [ 3 ] ; ypred_ptr += y_stride ; } } break ; case H_PRED : { for ( r = 0 ; r < 16 ; r ++ ) { <S2SV_StartBug> vpx_memset ( ypred_ptr , yleft_col [ r ] , 16 ) ; <S2SV_EndBug> ypred_ptr += y_stride ; } } break ; case TM_PRED : { for ( r = 0 ; r < 16 ; r ++ ) { for ( c = 0 ; c < 16 ; c ++ ) { int pred = yleft_col [ r ] + yabove_row [ c ] - ytop_left ; if ( pred < 0 ) pred = 0 ; if ( pred > 255 ) pred = 255 ; ypred_ptr [ c ] = pred ; } ypred_ptr += y_stride ; } } break ; case B_PRED : case NEARESTMV : case NEARMV : case ZEROMV : case NEWMV : case SPLITMV : case MB_MODE_COUNT : break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( ypred_ptr , <S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( ypred_ptr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4667\n\n```\nCWE-000 void sctp_association_free ( struct sctp_association * asoc ) { struct sock * sk = asoc -> base . sk ; struct sctp_transport * transport ; struct list_head * pos , * temp ; int i ; <S2SV_StartBug> if ( ! asoc -> temp ) { <S2SV_EndBug> list_del ( & asoc -> asocs ) ; if ( sctp_style ( sk , TCP ) && sctp_sstate ( sk , LISTENING ) ) sk -> sk_ack_backlog -- ; } asoc -> base . dead = true ; sctp_outq_free ( & asoc -> outqueue ) ; sctp_ulpq_free ( & asoc -> ulpq ) ; sctp_inq_free ( & asoc -> base . inqueue ) ; sctp_tsnmap_free ( & asoc -> peer . tsn_map ) ; sctp_ssnmap_free ( asoc -> ssnmap ) ; sctp_bind_addr_free ( & asoc -> base . bind_addr ) ; for ( i = SCTP_EVENT_TIMEOUT_NONE ; i < SCTP_NUM_TIMEOUT_TYPES ; ++ i ) { if ( del_timer ( & asoc -> timers [ i ] ) ) sctp_association_put ( asoc ) ; } kfree ( asoc -> peer . cookie ) ; kfree ( asoc -> peer . peer_random ) ; kfree ( asoc -> peer . peer_chunks ) ; kfree ( asoc -> peer . peer_hmacs ) ; list_for_each_safe ( pos , temp , & asoc -> peer . transport_addr_list ) { transport = list_entry ( pos , struct sctp_transport , transports ) ; list_del_rcu ( pos ) ; sctp_transport_free ( transport ) ; } asoc -> peer . transport_count = 0 ; sctp_asconf_queue_teardown ( asoc ) ; if ( asoc -> asconf_addr_del_pending != NULL ) kfree ( asoc -> asconf_addr_del_pending ) ; sctp_auth_destroy_keys ( & asoc -> endpoint_shared_keys ) ; sctp_auth_key_put ( asoc -> asoc_shared_key ) ; sctp_association_put ( asoc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! list_empty ( & asoc -> asocs ) <S2SV_ModEnd> ) { list_del\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static int parse_options ( char * options , struct super_block * sb , unsigned long * journal_devnum , unsigned int * journal_ioprio , ext4_fsblk_t * n_blocks_count , int is_remount ) { struct ext4_sb_info * sbi = EXT4_SB ( sb ) ; char * p ; substring_t args [ MAX_OPT_ARGS ] ; int data_opt = 0 ; int option ; # ifdef CONFIG_QUOTA int qfmt ; # endif if ( ! options ) return 1 ; while ( ( p = strsep ( & options , \",\" ) ) != NULL ) { int token ; if ( ! * p ) continue ; args [ 0 ] . to = args [ 0 ] . from = 0 ; token = match_token ( p , tokens , args ) ; switch ( token ) { case Opt_bsd_df : ext4_msg ( sb , KERN_WARNING , deprecated_msg , p , \"2.6.38\" ) ; clear_opt ( sbi -> s_mount_opt , MINIX_DF ) ; break ; case Opt_minix_df : ext4_msg ( sb , KERN_WARNING , deprecated_msg , p , \"2.6.38\" ) ; set_opt ( sbi -> s_mount_opt , MINIX_DF ) ; break ; case Opt_grpid : ext4_msg ( sb , KERN_WARNING , deprecated_msg , p , \"2.6.38\" ) ; set_opt ( sbi -> s_mount_opt , GRPID ) ; break ; case Opt_nogrpid : ext4_msg ( sb , KERN_WARNING , deprecated_msg , p , \"2.6.38\" ) ; clear_opt ( sbi -> s_mount_opt , GRPID ) ; break ; case Opt_resuid : if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; sbi -> s_resuid = option ; break ; case Opt_resgid : if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; sbi -> s_resgid = option ; break ; case Opt_sb : break ; case Opt_err_panic : clear_opt ( sbi -> s_mount_opt , ERRORS_CONT ) ; clear_opt ( sbi -> s_mount_opt , ERRORS_RO ) ; set_opt ( sbi -> s_mount_opt , ERRORS_PANIC ) ; break ; case Opt_err_ro : clear_opt ( sbi -> s_mount_opt , ERRORS_CONT ) ; clear_opt ( sbi -> s_mount_opt , ERRORS_PANIC ) ; set_opt ( sbi -> s_mount_opt , ERRORS_RO ) ; break ; case Opt_err_cont : clear_opt ( sbi -> s_mount_opt , ERRORS_RO ) ; clear_opt ( sbi -> s_mount_opt , ERRORS_PANIC ) ; set_opt ( sbi -> s_mount_opt , ERRORS_CONT ) ; break ; case Opt_nouid32 : set_opt ( sbi -> s_mount_opt , NO_UID32 ) ; break ; case Opt_debug : set_opt ( sbi -> s_mount_opt , DEBUG ) ; break ; case Opt_oldalloc : set_opt ( sbi -> s_mount_opt , OLDALLOC ) ; break ; case Opt_orlov : clear_opt ( sbi -> s_mount_opt , OLDALLOC ) ; break ; # ifdef CONFIG_EXT4_FS_XATTR case Opt_user_xattr : set_opt ( sbi -> s_mount_opt , XATTR_USER ) ; break ; case Opt_nouser_xattr : clear_opt ( sbi -> s_mount_opt , XATTR_USER ) ; break ; # else case Opt_user_xattr : case Opt_nouser_xattr : ext4_msg ( sb , KERN_ERR , \"(no)user_xattr<S2SV_blank>options<S2SV_blank>not<S2SV_blank>supported\" ) ; break ; # endif # ifdef CONFIG_EXT4_FS_POSIX_ACL case Opt_acl : set_opt ( sbi -> s_mount_opt , POSIX_ACL ) ; break ; case Opt_noacl : clear_opt ( sbi -> s_mount_opt , POSIX_ACL ) ; break ; # else case Opt_acl : case Opt_noacl : ext4_msg ( sb , KERN_ERR , \"(no)acl<S2SV_blank>options<S2SV_blank>not<S2SV_blank>supported\" ) ; break ; # endif case Opt_journal_update : if ( is_remount ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>specify<S2SV_blank>journal<S2SV_blank>on<S2SV_blank>remount\" ) ; return 0 ; } set_opt ( sbi -> s_mount_opt , UPDATE_JOURNAL ) ; break ; case Opt_journal_dev : if ( is_remount ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>specify<S2SV_blank>journal<S2SV_blank>on<S2SV_blank>remount\" ) ; return 0 ; } if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; * journal_devnum = option ; break ; case Opt_journal_checksum : set_opt ( sbi -> s_mount_opt , JOURNAL_CHECKSUM ) ; break ; case Opt_journal_async_commit : set_opt ( sbi -> s_mount_opt , JOURNAL_ASYNC_COMMIT ) ; set_opt ( sbi -> s_mount_opt , JOURNAL_CHECKSUM ) ; break ; case Opt_noload : set_opt ( sbi -> s_mount_opt , NOLOAD ) ; break ; case Opt_commit : if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; if ( option < 0 ) return 0 ; if ( option == 0 ) option = JBD2_DEFAULT_MAX_COMMIT_AGE ; sbi -> s_commit_interval = HZ * option ; break ; case Opt_max_batch_time : if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; if ( option < 0 ) return 0 ; if ( option == 0 ) option = EXT4_DEF_MAX_BATCH_TIME ; sbi -> s_max_batch_time = option ; break ; case Opt_min_batch_time : if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; if ( option < 0 ) return 0 ; sbi -> s_min_batch_time = option ; break ; case Opt_data_journal : data_opt = EXT4_MOUNT_JOURNAL_DATA ; goto datacheck ; case Opt_data_ordered : data_opt = EXT4_MOUNT_ORDERED_DATA ; goto datacheck ; case Opt_data_writeback : data_opt = EXT4_MOUNT_WRITEBACK_DATA ; datacheck : if ( is_remount ) { if ( test_opt ( sb , DATA_FLAGS ) != data_opt ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>change<S2SV_blank>data<S2SV_blank>mode<S2SV_blank>on<S2SV_blank>remount\" ) ; return 0 ; } } else { clear_opt ( sbi -> s_mount_opt , DATA_FLAGS ) ; sbi -> s_mount_opt |= data_opt ; } break ; case Opt_data_err_abort : set_opt ( sbi -> s_mount_opt , DATA_ERR_ABORT ) ; break ; case Opt_data_err_ignore : clear_opt ( sbi -> s_mount_opt , DATA_ERR_ABORT ) ; break ; # ifdef CONFIG_QUOTA case Opt_usrjquota : if ( ! set_qf_name ( sb , USRQUOTA , & args [ 0 ] ) ) return 0 ; break ; case Opt_grpjquota : if ( ! set_qf_name ( sb , GRPQUOTA , & args [ 0 ] ) ) return 0 ; break ; case Opt_offusrjquota : if ( ! clear_qf_name ( sb , USRQUOTA ) ) return 0 ; break ; case Opt_offgrpjquota : if ( ! clear_qf_name ( sb , GRPQUOTA ) ) return 0 ; break ; case Opt_jqfmt_vfsold : qfmt = QFMT_VFS_OLD ; goto set_qf_format ; case Opt_jqfmt_vfsv0 : qfmt = QFMT_VFS_V0 ; goto set_qf_format ; case Opt_jqfmt_vfsv1 : qfmt = QFMT_VFS_V1 ; set_qf_format : if ( sb_any_quota_loaded ( sb ) && sbi -> s_jquota_fmt != qfmt ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>change<S2SV_blank>\" \"journaled<S2SV_blank>quota<S2SV_blank>options<S2SV_blank>when<S2SV_blank>\" \"quota<S2SV_blank>turned<S2SV_blank>on\" ) ; return 0 ; } sbi -> s_jquota_fmt = qfmt ; break ; case Opt_quota : case Opt_usrquota : set_opt ( sbi -> s_mount_opt , QUOTA ) ; set_opt ( sbi -> s_mount_opt , USRQUOTA ) ; break ; case Opt_grpquota : set_opt ( sbi -> s_mount_opt , QUOTA ) ; set_opt ( sbi -> s_mount_opt , GRPQUOTA ) ; break ; case Opt_noquota : if ( sb_any_quota_loaded ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>change<S2SV_blank>quota<S2SV_blank>\" \"options<S2SV_blank>when<S2SV_blank>quota<S2SV_blank>turned<S2SV_blank>on\" ) ; return 0 ; } clear_opt ( sbi -> s_mount_opt , QUOTA ) ; clear_opt ( sbi -> s_mount_opt , USRQUOTA ) ; clear_opt ( sbi -> s_mount_opt , GRPQUOTA ) ; break ; # else case Opt_quota : case Opt_usrquota : case Opt_grpquota : ext4_msg ( sb , KERN_ERR , \"quota<S2SV_blank>options<S2SV_blank>not<S2SV_blank>supported\" ) ; break ; case Opt_usrjquota : case Opt_grpjquota : case Opt_offusrjquota : case Opt_offgrpjquota : case Opt_jqfmt_vfsold : case Opt_jqfmt_vfsv0 : case Opt_jqfmt_vfsv1 : ext4_msg ( sb , KERN_ERR , \"journaled<S2SV_blank>quota<S2SV_blank>options<S2SV_blank>not<S2SV_blank>supported\" ) ; break ; case Opt_noquota : break ; # endif case Opt_abort : sbi -> s_mount_flags |= EXT4_MF_FS_ABORTED ; break ; case Opt_nobarrier : clear_opt ( sbi -> s_mount_opt , BARRIER ) ; break ; case Opt_barrier : if ( args [ 0 ] . from ) { if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; } else option = 1 ; if ( option ) set_opt ( sbi -> s_mount_opt , BARRIER ) ; else clear_opt ( sbi -> s_mount_opt , BARRIER ) ; break ; case Opt_ignore : break ; case Opt_resize : if ( ! is_remount ) { ext4_msg ( sb , KERN_ERR , \"resize<S2SV_blank>option<S2SV_blank>only<S2SV_blank>available<S2SV_blank>\" \"for<S2SV_blank>remount\" ) ; return 0 ; } if ( match_int ( & args [ 0 ] , & option ) != 0 ) return 0 ; * n_blocks_count = option ; break ; case Opt_nobh : set_opt ( sbi -> s_mount_opt , NOBH ) ; break ; case Opt_bh : clear_opt ( sbi -> s_mount_opt , NOBH ) ; break ; case Opt_i_version : set_opt ( sbi -> s_mount_opt , I_VERSION ) ; sb -> s_flags |= MS_I_VERSION ; break ; case Opt_nodelalloc : clear_opt ( sbi -> s_mount_opt , DELALLOC ) ; break ; case Opt_stripe : if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; if ( option < 0 ) return 0 ; sbi -> s_stripe = option ; break ; case Opt_delalloc : set_opt ( sbi -> s_mount_opt , DELALLOC ) ; break ; case Opt_block_validity : set_opt ( sbi -> s_mount_opt , BLOCK_VALIDITY ) ; break ; case Opt_noblock_validity : clear_opt ( sbi -> s_mount_opt , BLOCK_VALIDITY ) ; break ; case Opt_inode_readahead_blks : if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; if ( option < 0 || option > ( 1 << 30 ) ) return 0 ; if ( ! is_power_of_2 ( option ) ) { ext4_msg ( sb , KERN_ERR , \"EXT4-fs:<S2SV_blank>inode_readahead_blks\" \"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>2\" ) ; return 0 ; } sbi -> s_inode_readahead_blks = option ; break ; case Opt_journal_ioprio : if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; if ( option < 0 || option > 7 ) break ; * journal_ioprio = IOPRIO_PRIO_VALUE ( IOPRIO_CLASS_BE , option ) ; break ; case Opt_noauto_da_alloc : set_opt ( sbi -> s_mount_opt , NO_AUTO_DA_ALLOC ) ; break ; case Opt_auto_da_alloc : if ( args [ 0 ] . from ) { if ( match_int ( & args [ 0 ] , & option ) ) return 0 ; } else option = 1 ; if ( option ) clear_opt ( sbi -> s_mount_opt , NO_AUTO_DA_ALLOC ) ; else set_opt ( sbi -> s_mount_opt , NO_AUTO_DA_ALLOC ) ; break ; case Opt_discard : set_opt ( sbi -> s_mount_opt , DISCARD ) ; break ; case Opt_nodiscard : clear_opt ( sbi -> s_mount_opt , DISCARD ) ; break ; <S2SV_StartBug> default : <S2SV_EndBug> ext4_msg ( sb , KERN_ERR , \"Unrecognized<S2SV_blank>mount<S2SV_blank>option<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>\" \"or<S2SV_blank>missing<S2SV_blank>value\" , p ) ; return 0 ; } } # ifdef CONFIG_QUOTA if ( sbi -> s_qf_names [ USRQUOTA ] || sbi -> s_qf_names [ GRPQUOTA ] ) { if ( test_opt ( sb , USRQUOTA ) && sbi -> s_qf_names [ USRQUOTA ] ) clear_opt ( sbi -> s_mount_opt , USRQUOTA ) ; if ( test_opt ( sb , GRPQUOTA ) && sbi -> s_qf_names [ GRPQUOTA ] ) clear_opt ( sbi -> s_mount_opt , GRPQUOTA ) ; if ( test_opt ( sb , GRPQUOTA ) || test_opt ( sb , USRQUOTA ) ) { ext4_msg ( sb , KERN_ERR , \"old<S2SV_blank>and<S2SV_blank>new<S2SV_blank>quota<S2SV_blank>\" \"format<S2SV_blank>mixing\" ) ; return 0 ; } if ( ! sbi -> s_jquota_fmt ) { ext4_msg ( sb , KERN_ERR , \"journaled<S2SV_blank>quota<S2SV_blank>format<S2SV_blank>\" \"not<S2SV_blank>specified\" ) ; return 0 ; } } else { if ( sbi -> s_jquota_fmt ) { ext4_msg ( sb , KERN_ERR , \"journaled<S2SV_blank>quota<S2SV_blank>format<S2SV_blank>\" \"specified<S2SV_blank>with<S2SV_blank>no<S2SV_blank>journaling<S2SV_blank>\" \"enabled\" ) ; return 0 ; } } # endif return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; break ; case Opt_dioread_nolock : set_opt ( sbi -> s_mount_opt , DIOREAD_NOLOCK ) ; break ; case Opt_dioread_lock : clear_opt ( sbi -> s_mount_opt , DIOREAD_NOLOCK ) ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 vpx_codec_err_t vpx_codec_control_ ( vpx_codec_ctx_t * ctx , int ctrl_id , ... ) { vpx_codec_err_t res ; if ( ! ctx || ! ctrl_id ) res = VPX_CODEC_INVALID_PARAM ; else if ( ! ctx -> iface || ! ctx -> priv || ! ctx -> iface -> ctrl_maps ) res = VPX_CODEC_ERROR ; else { vpx_codec_ctrl_fn_map_t * entry ; res = VPX_CODEC_ERROR ; for ( entry = ctx -> iface -> ctrl_maps ; entry && entry -> fn ; entry ++ ) { if ( ! entry -> ctrl_id || entry -> ctrl_id == ctrl_id ) { va_list ap ; va_start ( ap , ctrl_id ) ; <S2SV_StartBug> res = entry -> fn ( ctx -> priv -> alg_priv , ctrl_id , ap ) ; <S2SV_EndBug> va_end ( ap ) ; break ; } } } return SAVE_STATUS ( ctx , res ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> fn ( ( vpx_codec_alg_priv_t * ) <S2SV_ModStart> ctx -> priv <S2SV_ModEnd> , ap )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5366\n\n```\nCWE-399 int udpv6_recvmsg ( struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; int is_udplite = IS_UDPLITE ( sk ) ; int is_udp4 ; bool slow ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len , addr_len ) ; if ( np -> rxpmtu && np -> rxopt . bits . rxpmtu ) return ipv6_recv_rxpmtu ( sk , msg , len , addr_len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; is_udp4 = ( skb -> protocol == htons ( ETH_P_IP ) ) ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { if ( udp_lib_checksum_complete ( skb ) ) goto csum_copy_err ; } if ( skb_csum_unnecessary ( skb ) ) err = skb_copy_datagram_msg ( skb , sizeof ( struct udphdr ) , msg , copied ) ; else { err = skb_copy_and_csum_datagram_msg ( skb , sizeof ( struct udphdr ) , msg ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udpv6_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) { if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; } sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( msg -> msg_name ) { DECLARE_SOCKADDR ( struct sockaddr_in6 * , sin6 , msg -> msg_name ) ; sin6 -> sin6_family = AF_INET6 ; sin6 -> sin6_port = udp_hdr ( skb ) -> source ; sin6 -> sin6_flowinfo = 0 ; if ( is_udp4 ) { ipv6_addr_set_v4mapped ( ip_hdr ( skb ) -> saddr , & sin6 -> sin6_addr ) ; sin6 -> sin6_scope_id = 0 ; } else { sin6 -> sin6_addr = ipv6_hdr ( skb ) -> saddr ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , inet6_iif ( skb ) ) ; } * addr_len = sizeof ( * sin6 ) ; } if ( np -> rxopt . all ) ip6_datagram_recv_common_ctl ( sk , msg , skb ) ; if ( is_udp4 ) { if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; } else { if ( np -> rxopt . all ) ip6_datagram_recv_specific_ctl ( sk , msg , skb ) ; } err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { if ( is_udp4 ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } else { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } } unlock_sock_fast ( sk , slow ) ; <S2SV_StartBug> if ( noblock ) <S2SV_EndBug> return - EAGAIN ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> slow ) ; cond_resched ( ) <S2SV_ModEnd> ; msg ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static TX_SIZE read_selected_tx_size ( VP9_COMMON * cm , MACROBLOCKD * xd , <S2SV_StartBug> TX_SIZE max_tx_size , vp9_reader * r ) { <S2SV_EndBug> <S2SV_StartBug> const int ctx = vp9_get_tx_size_context ( xd ) ; <S2SV_EndBug> <S2SV_StartBug> const vp9_prob * tx_probs = get_tx_probs ( max_tx_size , ctx , & cm -> fc . tx_probs ) ; <S2SV_EndBug> <S2SV_StartBug> int tx_size = vp9_read ( r , tx_probs [ 0 ] ) ; <S2SV_EndBug> if ( tx_size != TX_4X4 && max_tx_size >= TX_16X16 ) { <S2SV_StartBug> tx_size += vp9_read ( r , tx_probs [ 1 ] ) ; <S2SV_EndBug> if ( tx_size != TX_8X8 && max_tx_size >= TX_32X32 ) <S2SV_StartBug> tx_size += vp9_read ( r , tx_probs [ 2 ] ) ; <S2SV_EndBug> } <S2SV_StartBug> if ( ! cm -> frame_parallel_decoding_mode ) <S2SV_EndBug> <S2SV_StartBug> ++ get_tx_counts ( max_tx_size , ctx , & cm -> counts . tx ) [ tx_size ] ; <S2SV_EndBug> return ( TX_SIZE ) tx_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TX_SIZE max_tx_size , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> r ) { FRAME_COUNTS * counts = xd -> counts ; <S2SV_ModStart> int ctx = get_tx_size_context <S2SV_ModEnd> ( xd ) <S2SV_ModStart> ) ; const vpx_prob <S2SV_ModEnd> * tx_probs = <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> tx_probs ) ; <S2SV_ModStart> int tx_size = vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> { tx_size += vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> ) tx_size += vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> } if ( counts <S2SV_ModEnd> ) ++ get_tx_counts <S2SV_ModStart> ctx , & counts -> <S2SV_ModEnd> tx ) [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4036\n\n```\nCWE-119 static void vhost_scsi_send_evt ( struct vhost_scsi * vs , struct vhost_scsi_tpg * tpg , struct se_lun * lun , u32 event , u32 reason ) { struct vhost_scsi_evt * evt ; evt = vhost_scsi_allocate_evt ( vs , event , reason ) ; if ( ! evt ) return ; if ( tpg && lun ) { evt -> event . lun [ 0 ] = 0x01 ; <S2SV_StartBug> evt -> event . lun [ 1 ] = tpg -> tport_tpgt & 0xFF ; <S2SV_EndBug> if ( lun -> unpacked_lun >= 256 ) evt -> event . lun [ 2 ] = lun -> unpacked_lun >> 8 | 0x40 ; evt -> event . lun [ 3 ] = lun -> unpacked_lun & 0xFF ; } llist_add ( & evt -> list , & vs -> vs_event_list ) ; vhost_work_queue ( & vs -> dev , & vs -> vs_event_work ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tpg -> tport_tpgt <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15822\n\n```\nCWE-617 static int flv_write_packet ( AVFormatContext * s , AVPacket * pkt ) { AVIOContext * pb = s -> pb ; AVCodecParameters * par = s -> streams [ pkt -> stream_index ] -> codecpar ; FLVContext * flv = s -> priv_data ; FLVStreamContext * sc = s -> streams [ pkt -> stream_index ] -> priv_data ; unsigned ts ; int size = pkt -> size ; uint8_t * data = NULL ; int flags = - 1 , flags_size , ret ; <S2SV_StartBug> int64_t cur_offset = avio_tell ( pb ) ; <S2SV_EndBug> if ( par -> codec_id == AV_CODEC_ID_VP6F || par -> codec_id == AV_CODEC_ID_VP6A || par -> codec_id == AV_CODEC_ID_VP6 || par -> codec_id == AV_CODEC_ID_AAC ) flags_size = 2 ; else if ( par -> codec_id == AV_CODEC_ID_H264 || par -> codec_id == AV_CODEC_ID_MPEG4 ) flags_size = 5 ; else flags_size = 1 ; if ( par -> codec_id == AV_CODEC_ID_AAC || par -> codec_id == AV_CODEC_ID_H264 || par -> codec_id == AV_CODEC_ID_MPEG4 ) { int side_size = 0 ; uint8_t * side = av_packet_get_side_data ( pkt , AV_PKT_DATA_NEW_EXTRADATA , & side_size ) ; if ( side && side_size > 0 && ( side_size != par -> extradata_size || memcmp ( side , par -> extradata , side_size ) ) ) { av_free ( par -> extradata ) ; par -> extradata = av_mallocz ( side_size + AV_INPUT_BUFFER_PADDING_SIZE ) ; if ( ! par -> extradata ) { par -> extradata_size = 0 ; return AVERROR ( ENOMEM ) ; } memcpy ( par -> extradata , side , side_size ) ; par -> extradata_size = side_size ; flv_write_codec_header ( s , par , pkt -> dts ) ; } } if ( flv -> delay == AV_NOPTS_VALUE ) flv -> delay = - pkt -> dts ; if ( pkt -> dts < - flv -> delay ) { av_log ( s , AV_LOG_WARNING , \"Packets<S2SV_blank>are<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>proper<S2SV_blank>order<S2SV_blank>with<S2SV_blank>respect<S2SV_blank>to<S2SV_blank>DTS\\\\n\" ) ; return AVERROR ( EINVAL ) ; } ts = pkt -> dts ; if ( s -> event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED ) { write_metadata ( s , ts ) ; s -> event_flags &= ~ AVSTREAM_EVENT_FLAG_METADATA_UPDATED ; } avio_write_marker ( pb , av_rescale ( ts , AV_TIME_BASE , 1000 ) , pkt -> flags & AV_PKT_FLAG_KEY && ( flv -> video_par ? par -> codec_type == AVMEDIA_TYPE_VIDEO : 1 ) ? AVIO_DATA_MARKER_SYNC_POINT : AVIO_DATA_MARKER_BOUNDARY_POINT ) ; switch ( par -> codec_type ) { case AVMEDIA_TYPE_VIDEO : avio_w8 ( pb , FLV_TAG_TYPE_VIDEO ) ; flags = ff_codec_get_tag ( flv_video_codec_ids , par -> codec_id ) ; flags |= pkt -> flags & AV_PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER ; break ; case AVMEDIA_TYPE_AUDIO : flags = get_audio_flags ( s , par ) ; av_assert0 ( size ) ; avio_w8 ( pb , FLV_TAG_TYPE_AUDIO ) ; break ; case AVMEDIA_TYPE_SUBTITLE : case AVMEDIA_TYPE_DATA : avio_w8 ( pb , FLV_TAG_TYPE_META ) ; break ; default : return AVERROR ( EINVAL ) ; } if ( par -> codec_id == AV_CODEC_ID_H264 || par -> codec_id == AV_CODEC_ID_MPEG4 ) { if ( par -> extradata_size > 0 && * ( uint8_t * ) par -> extradata != 1 ) if ( ( ret = ff_avc_parse_nal_units_buf ( pkt -> data , & data , & size ) ) < 0 ) return ret ; } else if ( par -> codec_id == AV_CODEC_ID_AAC && pkt -> size > 2 && ( AV_RB16 ( pkt -> data ) & 0xfff0 ) == 0xfff0 ) { if ( ! s -> streams [ pkt -> stream_index ] -> nb_frames ) { av_log ( s , AV_LOG_ERROR , \"Malformed<S2SV_blank>AAC<S2SV_blank>bitstream<S2SV_blank>detected:<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>audio<S2SV_blank>bitstream<S2SV_blank>filter<S2SV_blank>\\'aac_adtstoasc\\'<S2SV_blank>to<S2SV_blank>fix<S2SV_blank>it<S2SV_blank>\" \"(\\'-bsf:a<S2SV_blank>aac_adtstoasc\\'<S2SV_blank>option<S2SV_blank>with<S2SV_blank>ffmpeg)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } av_log ( s , AV_LOG_WARNING , \"aac<S2SV_blank>bitstream<S2SV_blank>error\\\\n\" ) ; } if ( par -> codec_id == AV_CODEC_ID_SPEEX && ts - sc -> last_ts > 160 ) av_log ( s , AV_LOG_WARNING , \"Warning:<S2SV_blank>Speex<S2SV_blank>stream<S2SV_blank>has<S2SV_blank>more<S2SV_blank>than<S2SV_blank>\" \"8<S2SV_blank>frames<S2SV_blank>per<S2SV_blank>packet.<S2SV_blank>Adobe<S2SV_blank>Flash<S2SV_blank>\" \"Player<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>this!\\\\n\" ) ; if ( sc -> last_ts < ts ) sc -> last_ts = ts ; if ( size + flags_size >= 1 << 24 ) { av_log ( s , AV_LOG_ERROR , \"Too<S2SV_blank>large<S2SV_blank>packet<S2SV_blank>with<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>>=<S2SV_blank>%u\\\\n\" , size + flags_size , 1 << 24 ) ; return AVERROR ( EINVAL ) ; } avio_wb24 ( pb , size + flags_size ) ; put_timestamp ( pb , ts ) ; avio_wb24 ( pb , flv -> reserved ) ; if ( par -> codec_type == AVMEDIA_TYPE_DATA || par -> codec_type == AVMEDIA_TYPE_SUBTITLE ) { int data_size ; int64_t metadata_size_pos = avio_tell ( pb ) ; if ( par -> codec_id == AV_CODEC_ID_TEXT ) { avio_w8 ( pb , AMF_DATA_TYPE_STRING ) ; put_amf_string ( pb , \"onTextData\" ) ; avio_w8 ( pb , AMF_DATA_TYPE_MIXEDARRAY ) ; avio_wb32 ( pb , 2 ) ; put_amf_string ( pb , \"type\" ) ; avio_w8 ( pb , AMF_DATA_TYPE_STRING ) ; put_amf_string ( pb , \"Text\" ) ; put_amf_string ( pb , \"text\" ) ; avio_w8 ( pb , AMF_DATA_TYPE_STRING ) ; put_amf_string ( pb , pkt -> data ) ; put_amf_string ( pb , \"\" ) ; avio_w8 ( pb , AMF_END_OF_OBJECT ) ; } else { avio_write ( pb , data ? data : pkt -> data , size ) ; } data_size = avio_tell ( pb ) - metadata_size_pos ; avio_seek ( pb , metadata_size_pos - 10 , SEEK_SET ) ; avio_wb24 ( pb , data_size ) ; avio_seek ( pb , data_size + 10 - 3 , SEEK_CUR ) ; avio_wb32 ( pb , data_size + 11 ) ; } else { av_assert1 ( flags >= 0 ) ; avio_w8 ( pb , flags ) ; if ( par -> codec_id == AV_CODEC_ID_VP6 ) avio_w8 ( pb , 0 ) ; if ( par -> codec_id == AV_CODEC_ID_VP6F || par -> codec_id == AV_CODEC_ID_VP6A ) { if ( par -> extradata_size ) avio_w8 ( pb , par -> extradata [ 0 ] ) ; else avio_w8 ( pb , ( ( FFALIGN ( par -> width , 16 ) - par -> width ) << 4 ) | ( FFALIGN ( par -> height , 16 ) - par -> height ) ) ; } else if ( par -> codec_id == AV_CODEC_ID_AAC ) avio_w8 ( pb , 1 ) ; else if ( par -> codec_id == AV_CODEC_ID_H264 || par -> codec_id == AV_CODEC_ID_MPEG4 ) { avio_w8 ( pb , 1 ) ; avio_wb24 ( pb , pkt -> pts - pkt -> dts ) ; } avio_write ( pb , data ? data : pkt -> data , size ) ; avio_wb32 ( pb , size + flags_size + 11 ) ; flv -> duration = FFMAX ( flv -> duration , pkt -> pts + flv -> delay + pkt -> duration ) ; } if ( flv -> flags & FLV_ADD_KEYFRAME_INDEX ) { switch ( par -> codec_type ) { case AVMEDIA_TYPE_VIDEO : flv -> videosize += ( avio_tell ( pb ) - cur_offset ) ; flv -> lasttimestamp = flv -> acurframeindex / flv -> framerate ; if ( pkt -> flags & AV_PKT_FLAG_KEY ) { double ts = flv -> acurframeindex / flv -> framerate ; int64_t pos = cur_offset ; flv -> lastkeyframetimestamp = flv -> acurframeindex / flv -> framerate ; flv -> lastkeyframelocation = pos ; flv_append_keyframe_info ( s , flv , ts , pos ) ; } flv -> acurframeindex ++ ; break ; case AVMEDIA_TYPE_AUDIO : flv -> audiosize += ( avio_tell ( pb ) - cur_offset ) ; break ; default : av_log ( s , AV_LOG_WARNING , \"par->codec_type<S2SV_blank>is<S2SV_blank>type<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , par -> codec_type ) ; break ; } } av_free ( data ) ; return pb -> error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pb ) ; if ( par -> codec_type == AVMEDIA_TYPE_AUDIO && ! pkt -> size ) { av_log ( s , AV_LOG_WARNING , \"Empty<S2SV_blank>audio<S2SV_blank>Packet\\\\n\" ) ; return AVERROR ( EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10200\n\n```\nCWE-264 static int l2tp_ip6_bind ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct sockaddr_l2tpip6 * addr = ( struct sockaddr_l2tpip6 * ) uaddr ; struct net * net = sock_net ( sk ) ; __be32 v4addr = 0 ; int addr_type ; int err ; <S2SV_StartBug> if ( ! sock_flag ( sk , SOCK_ZAPPED ) ) <S2SV_EndBug> return - EINVAL ; if ( addr -> l2tp_family != AF_INET6 ) return - EINVAL ; if ( addr_len < sizeof ( * addr ) ) return - EINVAL ; addr_type = ipv6_addr_type ( & addr -> l2tp_addr ) ; if ( addr_type == IPV6_ADDR_MAPPED ) return - EADDRNOTAVAIL ; if ( addr_type & IPV6_ADDR_MULTICAST ) return - EADDRNOTAVAIL ; err = - EADDRINUSE ; read_lock_bh ( & l2tp_ip6_lock ) ; if ( __l2tp_ip6_bind_lookup ( net , & addr -> l2tp_addr , sk -> sk_bound_dev_if , addr -> l2tp_conn_id ) ) goto out_in_use ; read_unlock_bh ( & l2tp_ip6_lock ) ; lock_sock ( sk ) ; err = - EINVAL ; <S2SV_StartBug> if ( sk -> sk_state != TCP_CLOSE ) <S2SV_EndBug> goto out_unlock ; rcu_read_lock ( ) ; if ( addr_type != IPV6_ADDR_ANY ) { struct net_device * dev = NULL ; if ( addr_type & IPV6_ADDR_LINKLOCAL ) { if ( addr_len >= sizeof ( struct sockaddr_in6 ) && addr -> l2tp_scope_id ) { sk -> sk_bound_dev_if = addr -> l2tp_scope_id ; } if ( ! sk -> sk_bound_dev_if ) goto out_unlock_rcu ; err = - ENODEV ; dev = dev_get_by_index_rcu ( sock_net ( sk ) , sk -> sk_bound_dev_if ) ; if ( ! dev ) goto out_unlock_rcu ; } v4addr = LOOPBACK4_IPV6 ; err = - EADDRNOTAVAIL ; if ( ! ipv6_chk_addr ( sock_net ( sk ) , & addr -> l2tp_addr , dev , 0 ) ) goto out_unlock_rcu ; } rcu_read_unlock ( ) ; inet -> inet_rcv_saddr = inet -> inet_saddr = v4addr ; sk -> sk_v6_rcv_saddr = addr -> l2tp_addr ; np -> saddr = addr -> l2tp_addr ; l2tp_ip6_sk ( sk ) -> conn_id = addr -> l2tp_conn_id ; write_lock_bh ( & l2tp_ip6_lock ) ; sk_add_bind_node ( sk , & l2tp_ip6_bind_table ) ; sk_del_node_init ( sk ) ; write_unlock_bh ( & l2tp_ip6_lock ) ; sock_reset_flag ( sk , SOCK_ZAPPED ) ; release_sock ( sk ) ; return 0 ; out_unlock_rcu : rcu_read_unlock ( ) ; out_unlock : release_sock ( sk ) ; return err ; out_in_use : read_unlock_bh ( & l2tp_ip6_lock ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> addr -> l2tp_family <S2SV_ModStart> ; if ( ! sock_flag ( sk , SOCK_ZAPPED ) ) goto out_unlock ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11595\n\n```\nCWE-119 void jshGetPinString ( char * result , Pin pin ) { result [ 0 ] = 0 ; # ifdef PIN_NAMES_DIRECT if ( jshIsPinValid ( pin ) ) { result [ 0 ] = ( char ) ( 'A' + ( pinInfo [ pin ] . port & JSH_PORT_MASK ) - JSH_PORTA ) ; itostr ( pinInfo [ pin ] . pin - JSH_PIN0 , & result [ 1 ] , 10 ) ; # else if ( false ) { # if JSH_PORTA_OFFSET != - 1 } else if ( # if JSH_PORTA_OFFSET != 0 pin >= JSH_PORTA_OFFSET && # endif pin < JSH_PORTA_OFFSET + JSH_PORTA_COUNT ) { result [ 0 ] = 'A' ; itostr ( pin - JSH_PORTA_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTB_OFFSET != - 1 } else if ( pin >= JSH_PORTB_OFFSET && pin < JSH_PORTB_OFFSET + JSH_PORTB_COUNT ) { result [ 0 ] = 'B' ; itostr ( pin - JSH_PORTB_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTC_OFFSET != - 1 } else if ( pin >= JSH_PORTC_OFFSET && pin < JSH_PORTC_OFFSET + JSH_PORTC_COUNT ) { result [ 0 ] = 'C' ; itostr ( pin - JSH_PORTC_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTD_OFFSET != - 1 } else if ( # if JSH_PORTD_OFFSET != 0 pin >= JSH_PORTD_OFFSET && # endif pin < JSH_PORTD_OFFSET + JSH_PORTD_COUNT ) { result [ 0 ] = 'D' ; itostr ( pin - JSH_PORTD_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTE_OFFSET != - 1 } else if ( pin >= JSH_PORTE_OFFSET && pin < JSH_PORTE_OFFSET + JSH_PORTE_COUNT ) { result [ 0 ] = 'E' ; itostr ( pin - JSH_PORTE_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTF_OFFSET != - 1 } else if ( pin >= JSH_PORTF_OFFSET && pin < JSH_PORTF_OFFSET + JSH_PORTF_COUNT ) { result [ 0 ] = 'F' ; itostr ( pin - JSH_PORTF_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTG_OFFSET != - 1 } else if ( pin >= JSH_PORTG_OFFSET && pin < JSH_PORTG_OFFSET + JSH_PORTG_COUNT ) { result [ 0 ] = 'G' ; itostr ( pin - JSH_PORTG_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTH_OFFSET != - 1 } else if ( pin >= JSH_PORTH_OFFSET && pin < JSH_PORTH_OFFSET + JSH_PORTH_COUNT ) { result [ 0 ] = 'H' ; itostr ( pin - JSH_PORTH_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTI_OFFSET != - 1 } else if ( pin >= JSH_PORTI_OFFSET && pin < JSH_PORTI_OFFSET + JSH_PORTI_COUNT ) { result [ 0 ] = 'I' ; itostr ( pin - JSH_PORTI_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTV_OFFSET != - 1 } else if ( pin >= JSH_PORTV_OFFSET && pin < JSH_PORTV_OFFSET + JSH_PORTV_COUNT ) { result [ 0 ] = 'V' ; itostr ( pin - JSH_PORTV_OFFSET , & result [ 1 ] , 10 ) ; # endif # endif } else { <S2SV_StartBug> strncpy ( result , \"undefined\" , 10 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { strcpy <S2SV_ModEnd> ( result , <S2SV_ModStart> result , \"undefined\" <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11171\n\n```\nCWE-835 static Status accept_xsmp_connection ( SmsConn sms_conn , GsmXsmpServer * server , unsigned long * mask_ret , SmsCallbacks * callbacks_ret , char * * failure_reason_ret ) { IceConn ice_conn ; <S2SV_StartBug> GsmXSMPClient * client ; <S2SV_EndBug> if ( server -> priv -> xsmp_sockets == NULL ) { g_debug ( \"GsmXsmpServer:<S2SV_blank>In<S2SV_blank>shutdown,<S2SV_blank>rejecting<S2SV_blank>new<S2SV_blank>client\" ) ; * failure_reason_ret = strdup ( _ ( \"Refusing<S2SV_blank>new<S2SV_blank>client<S2SV_blank>connection<S2SV_blank>because<S2SV_blank>the<S2SV_blank>session<S2SV_blank>is<S2SV_blank>currently<S2SV_blank>being<S2SV_blank>shut<S2SV_blank>down\\\\n\" ) ) ; return FALSE ; } ice_conn = SmsGetIceConnection ( sms_conn ) ; <S2SV_StartBug> client = ice_conn -> context ; <S2SV_EndBug> <S2SV_StartBug> g_return_val_if_fail ( client != NULL , TRUE ) ; <S2SV_EndBug> <S2SV_StartBug> gsm_xsmp_client_connect ( client , sms_conn , mask_ret , callbacks_ret ) ; <S2SV_EndBug> return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IceConn ice_conn ; GsmClient * client ; GsmIceConnectionWatch * data <S2SV_ModEnd> ; if ( <S2SV_ModStart> sms_conn ) ; data <S2SV_ModEnd> = ice_conn -> <S2SV_ModStart> -> context ; free_ice_connection_watch ( data ) ; client = gsm_xsmp_client_new ( ice_conn ) ; gsm_store_add ( server -> priv -> client_store , gsm_client_peek_id ( client ) , G_OBJECT ( client ) ) ; g_object_unref ( client <S2SV_ModEnd> ) ; gsm_xsmp_client_connect <S2SV_ModStart> ; gsm_xsmp_client_connect ( GSM_XSMP_CLIENT ( client ) <S2SV_ModEnd> , sms_conn ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 static int udf_symlink_filler ( struct file * file , struct page * page ) { struct inode * inode = page -> mapping -> host ; struct buffer_head * bh = NULL ; unsigned char * symlink ; int err ; unsigned char * p = kmap ( page ) ; struct udf_inode_info * iinfo ; uint32_t pos ; if ( inode -> i_size > inode -> i_sb -> s_blocksize ) { err = - ENAMETOOLONG ; goto out_unmap ; } iinfo = UDF_I ( inode ) ; pos = udf_block_map ( inode , 0 ) ; down_read ( & iinfo -> i_data_sem ) ; if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ) { symlink = iinfo -> i_ext . i_data + iinfo -> i_lenEAttr ; } else { bh = sb_bread ( inode -> i_sb , pos ) ; if ( ! bh ) { err = - EIO ; goto out_unlock_inode ; } symlink = bh -> b_data ; } <S2SV_StartBug> udf_pc_to_char ( inode -> i_sb , symlink , inode -> i_size , p ) ; <S2SV_EndBug> <S2SV_StartBug> brelse ( bh ) ; <S2SV_EndBug> up_read ( & iinfo -> i_data_sem ) ; SetPageUptodate ( page ) ; kunmap ( page ) ; unlock_page ( page ) ; return 0 ; out_unlock_inode : up_read ( & iinfo -> i_data_sem ) ; SetPageError ( page ) ; out_unmap : kunmap ( page ) ; unlock_page ( page ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> b_data ; } err = <S2SV_ModStart> i_size , p , PAGE_SIZE <S2SV_ModStart> ( bh ) ; if ( err ) goto out_unlock_inode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> static char * print_array ( cJSON * item , int depth , int fmt ) <S2SV_EndBug> { char * * entries ; char * out = 0 , * ptr , * ret ; int len = 5 ; cJSON * child = item -> child ; int numentries = 0 , i = 0 , fail = 0 ; <S2SV_StartBug> while ( child ) { <S2SV_EndBug> ++ numentries ; child = child -> next ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> if ( ! ( entries = ( char * * ) cJSON_malloc ( numentries * sizeof ( char * ) ) ) ) <S2SV_EndBug> return 0 ; memset ( entries , 0 , numentries * sizeof ( char * ) ) ; child = item -> child ; <S2SV_StartBug> while ( child && ! fail ) { <S2SV_EndBug> <S2SV_StartBug> ret = print_value ( child , depth + 1 , fmt ) ; <S2SV_EndBug> entries [ i ++ ] = ret ; if ( ret ) len += strlen ( ret ) + 2 + ( fmt ? 1 : 0 ) ; else fail = 1 ; child = child -> next ; } <S2SV_StartBug> if ( ! fail ) { <S2SV_EndBug> out = ( char * ) cJSON_malloc ( len ) ; if ( ! out ) fail = 1 ; <S2SV_StartBug> } <S2SV_EndBug> if ( fail ) { <S2SV_StartBug> for ( i = 0 ; i < numentries ; ++ i ) <S2SV_EndBug> if ( entries [ i ] ) cJSON_free ( entries [ i ] ) ; cJSON_free ( entries ) ; return 0 ; } * out = '[' ; ptr = out + 1 ; * ptr = 0 ; <S2SV_StartBug> for ( i = 0 ; i < numentries ; ++ i ) { <S2SV_EndBug> strcpy ( ptr , entries [ i ] ) ; <S2SV_StartBug> ptr += strlen ( entries [ i ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( i != numentries - 1 ) { <S2SV_EndBug> * ptr ++ = ',' ; if ( fmt ) * ptr ++ = '<S2SV_blank>' ; * ptr = 0 ; } <S2SV_StartBug> cJSON_free ( entries [ i ] ) ; <S2SV_EndBug> } cJSON_free ( entries ) ; * ptr ++ = ']' ; <S2SV_StartBug> * ptr ++ = 0 ; <S2SV_EndBug> return out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int fmt , printbuffer * p <S2SV_ModStart> = 0 ; size_t tmplen = 0 ; <S2SV_ModStart> ( child ) numentries ++ , <S2SV_ModEnd> child = child <S2SV_ModStart> -> next ; if ( ! numentries ) { if ( p ) out = ensure ( p , 3 ) ; else out = ( char <S2SV_ModEnd> * ) cJSON_malloc <S2SV_ModStart> ) cJSON_malloc ( 3 ) ; if ( out ) strcpy ( out , \"[]\" ) ; return out ; } if ( p ) { i = p -> offset ; ptr = ensure ( p , 1 ) ; if ( ! ptr ) return 0 ; * ptr = '[' ; p -> offset ++ <S2SV_ModEnd> ; child = <S2SV_ModStart> ! fail ) { <S2SV_ModEnd> print_value ( child <S2SV_ModStart> 1 , fmt , p ) ; p -> offset = update ( p ) ; if ( child -> next ) { len = fmt ? 2 : 1 ; ptr = ensure ( p , len + 1 ) ; if ( ! ptr ) return 0 ; * ptr ++ = ',' ; if ( fmt ) * ptr ++ = '<S2SV_blank>' ; * ptr = 0 ; p -> offset += len ; } child = child -> next ; } ptr = ensure ( p , 2 ) ; if ( ! ptr ) return 0 ; * ptr ++ = ']' ; * ptr = 0 ; out = ( p -> buffer ) + i ; } else { entries = ( char * * ) cJSON_malloc ( numentries * sizeof ( char * ) ) ; if ( ! entries ) return 0 ; memset ( entries , 0 , numentries * sizeof ( char * ) ) ; child = item -> child ; while ( child && ! fail ) { ret = print_value ( child , depth + 1 , fmt , 0 <S2SV_ModStart> ! fail ) <S2SV_ModEnd> out = ( <S2SV_ModStart> = 1 ; <S2SV_ModEnd> if ( fail <S2SV_ModStart> < numentries ; i ++ ) <S2SV_ModEnd> if ( entries <S2SV_ModStart> < numentries ; i ++ ) { tmplen = strlen ( <S2SV_ModEnd> entries [ i <S2SV_ModStart> ] ) ; memcpy ( ptr , entries [ i ] , tmplen ) ; ptr += tmplen ; if ( i != numentries - 1 ) { * ptr ++ = ',' ; if ( fmt ) * ptr ++ = '<S2SV_blank>' ; * ptr = 0 ; } cJSON_free <S2SV_ModEnd> ( entries [ <S2SV_ModStart> ] ) ; <S2SV_ModEnd> } cJSON_free ( <S2SV_ModStart> cJSON_free ( entries <S2SV_ModEnd> ) ; * <S2SV_ModStart> = ']' ; * ptr ++ = 0 ; } <S2SV_ModEnd> return out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18397\n\n```\nCWE-000 static int userfaultfd_unregister ( struct userfaultfd_ctx * ctx , unsigned long arg ) { struct mm_struct * mm = ctx -> mm ; struct vm_area_struct * vma , * prev , * cur ; int ret ; struct uffdio_range uffdio_unregister ; unsigned long new_flags ; bool found ; unsigned long start , end , vma_end ; const void __user * buf = ( void __user * ) arg ; ret = - EFAULT ; if ( copy_from_user ( & uffdio_unregister , buf , sizeof ( uffdio_unregister ) ) ) goto out ; ret = validate_range ( mm , uffdio_unregister . start , uffdio_unregister . len ) ; if ( ret ) goto out ; start = uffdio_unregister . start ; end = start + uffdio_unregister . len ; ret = - ENOMEM ; if ( ! mmget_not_zero ( mm ) ) goto out ; down_write ( & mm -> mmap_sem ) ; vma = find_vma_prev ( mm , start , & prev ) ; if ( ! vma ) goto out_unlock ; ret = - EINVAL ; if ( vma -> vm_start >= end ) goto out_unlock ; if ( is_vm_hugetlb_page ( vma ) ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( vma ) ; if ( start & ( vma_hpagesize - 1 ) ) goto out_unlock ; } found = false ; ret = - EINVAL ; for ( cur = vma ; cur && cur -> vm_start < end ; cur = cur -> vm_next ) { cond_resched ( ) ; BUG_ON ( ! ! cur -> vm_userfaultfd_ctx . ctx ^ ! ! ( cur -> vm_flags & ( VM_UFFD_MISSING | VM_UFFD_WP ) ) ) ; if ( ! vma_can_userfault ( cur ) ) goto out_unlock ; found = true ; } BUG_ON ( ! found ) ; if ( vma -> vm_start < start ) prev = vma ; ret = 0 ; do { cond_resched ( ) ; BUG_ON ( ! vma_can_userfault ( vma ) ) ; <S2SV_StartBug> if ( ! vma -> vm_userfaultfd_ctx . ctx ) <S2SV_EndBug> goto skip ; if ( vma -> vm_start > start ) start = vma -> vm_start ; vma_end = min ( end , vma -> vm_end ) ; if ( userfaultfd_missing ( vma ) ) { struct userfaultfd_wake_range range ; range . start = start ; range . len = vma_end - start ; wake_userfault ( vma -> vm_userfaultfd_ctx . ctx , & range ) ; } new_flags = vma -> vm_flags & ~ ( VM_UFFD_MISSING | VM_UFFD_WP ) ; prev = vma_merge ( mm , prev , start , vma_end , new_flags , vma -> anon_vma , vma -> vm_file , vma -> vm_pgoff , vma_policy ( vma ) , NULL_VM_UFFD_CTX ) ; if ( prev ) { vma = prev ; goto next ; } if ( vma -> vm_start < start ) { ret = split_vma ( mm , vma , start , 1 ) ; if ( ret ) break ; } if ( vma -> vm_end > end ) { ret = split_vma ( mm , vma , end , 0 ) ; if ( ret ) break ; } next : vma -> vm_flags = new_flags ; vma -> vm_userfaultfd_ctx = NULL_VM_UFFD_CTX ; skip : prev = vma ; start = vma -> vm_end ; vma = vma -> vm_next ; } while ( vma && vma -> vm_start < end ) ; out_unlock : up_write ( & mm -> mmap_sem ) ; mmput ( mm ) ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; WARN_ON ( ! ( vma -> vm_flags & VM_MAYWRITE ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 int llc_print ( netdissect_options * ndo , const u_char * p , u_int length , u_int caplen , const struct lladdr_info * src , const struct lladdr_info * dst ) { uint8_t dsap_field , dsap , ssap_field , ssap ; uint16_t control ; int hdrlen ; int is_u ; if ( caplen < 3 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( caplen ) ; } if ( length < 3 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( length ) ; } dsap_field = * p ; ssap_field = * ( p + 1 ) ; control = * ( p + 2 ) ; if ( ( control & LLC_U_FMT ) == LLC_U_FMT ) { is_u = 1 ; hdrlen = 3 ; } else { if ( caplen < 4 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( caplen ) ; } if ( length < 4 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( length ) ; } control = EXTRACT_LE_16BITS ( p + 2 ) ; is_u = 0 ; hdrlen = 4 ; } if ( ssap_field == LLCSAP_GLOBAL && dsap_field == LLCSAP_GLOBAL ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"IPX<S2SV_blank>802.3:<S2SV_blank>\" ) ) ; ipx_print ( ndo , p , length ) ; return ( 0 ) ; } dsap = dsap_field & ~ LLC_IG ; ssap = ssap_field & ~ LLC_GSAP ; if ( ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"LLC,<S2SV_blank>dsap<S2SV_blank>%s<S2SV_blank>(0x%02x)<S2SV_blank>%s,<S2SV_blank>ssap<S2SV_blank>%s<S2SV_blank>(0x%02x)<S2SV_blank>%s\" , tok2str ( llc_values , \"Unknown\" , dsap ) , dsap , tok2str ( llc_ig_flag_values , \"Unknown\" , dsap_field & LLC_IG ) , tok2str ( llc_values , \"Unknown\" , ssap ) , ssap , tok2str ( llc_flag_values , \"Unknown\" , ssap_field & LLC_GSAP ) ) ) ; if ( is_u ) { ND_PRINT ( ( ndo , \",<S2SV_blank>ctrl<S2SV_blank>0x%02x:<S2SV_blank>\" , control ) ) ; } else { ND_PRINT ( ( ndo , \",<S2SV_blank>ctrl<S2SV_blank>0x%04x:<S2SV_blank>\" , control ) ) ; } } p += hdrlen ; length -= hdrlen ; caplen -= hdrlen ; if ( ssap == LLCSAP_SNAP && dsap == LLCSAP_SNAP && control == LLC_UI ) { if ( ! snap_print ( ndo , p , length , caplen , src , dst , 2 ) ) { return ( - ( hdrlen + 5 ) ) ; } else return ( hdrlen + 5 ) ; } if ( ssap == LLCSAP_8021D && dsap == LLCSAP_8021D && control == LLC_UI ) { stp_print ( ndo , p , length ) ; return ( hdrlen ) ; } if ( ssap == LLCSAP_IP && dsap == LLCSAP_IP && control == LLC_UI ) { ip_print ( ndo , p , length ) ; return ( hdrlen ) ; } if ( ssap == LLCSAP_IPX && dsap == LLCSAP_IPX && control == LLC_UI ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"IPX<S2SV_blank>802.2:<S2SV_blank>\" ) ) ; ipx_print ( ndo , p , length ) ; return ( hdrlen ) ; } # ifdef ENABLE_SMB if ( ssap == LLCSAP_NETBEUI && dsap == LLCSAP_NETBEUI && ( ! ( control & LLC_S_FMT ) || control == LLC_U_FMT ) ) { netbeui_print ( ndo , control , p , length ) ; return ( hdrlen ) ; } # endif if ( ssap == LLCSAP_ISONS && dsap == LLCSAP_ISONS && control == LLC_UI ) { <S2SV_StartBug> isoclns_print ( ndo , p , length , caplen ) ; <S2SV_EndBug> return ( hdrlen ) ; } if ( ! ndo -> ndo_eflag ) { if ( ssap == dsap ) { if ( src == NULL || dst == NULL ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , tok2str ( llc_values , \"Unknown<S2SV_blank>DSAP<S2SV_blank>0x%02x\" , dsap ) ) ) ; else ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>\" , ( src -> addr_string ) ( ndo , src -> addr ) , ( dst -> addr_string ) ( ndo , dst -> addr ) , tok2str ( llc_values , \"Unknown<S2SV_blank>DSAP<S2SV_blank>0x%02x\" , dsap ) ) ) ; } else { if ( src == NULL || dst == NULL ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s<S2SV_blank>\" , tok2str ( llc_values , \"Unknown<S2SV_blank>SSAP<S2SV_blank>0x%02x\" , ssap ) , tok2str ( llc_values , \"Unknown<S2SV_blank>DSAP<S2SV_blank>0x%02x\" , dsap ) ) ) ; else ND_PRINT ( ( ndo , \"%s<S2SV_blank>%s<S2SV_blank>><S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>\" , ( src -> addr_string ) ( ndo , src -> addr ) , tok2str ( llc_values , \"Unknown<S2SV_blank>SSAP<S2SV_blank>0x%02x\" , ssap ) , ( dst -> addr_string ) ( ndo , dst -> addr ) , tok2str ( llc_values , \"Unknown<S2SV_blank>DSAP<S2SV_blank>0x%02x\" , dsap ) ) ) ; } } if ( is_u ) { ND_PRINT ( ( ndo , \"Unnumbered,<S2SV_blank>%s,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( llc_cmd_values , \"%02x\" , LLC_U_CMD ( control ) ) , tok2str ( llc_flag_values , \"?\" , ( ssap_field & LLC_GSAP ) | ( control & LLC_U_POLL ) ) , length + hdrlen ) ) ; if ( ( control & ~ LLC_U_POLL ) == LLC_XID ) { if ( length == 0 ) { return ( hdrlen ) ; } if ( caplen < 1 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; if ( caplen > 0 ) ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( hdrlen ) ; } if ( * p == LLC_XID_FI ) { if ( caplen < 3 || length < 3 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; if ( caplen > 0 ) ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; } else ND_PRINT ( ( ndo , \":<S2SV_blank>%02x<S2SV_blank>%02x\" , p [ 1 ] , p [ 2 ] ) ) ; return ( hdrlen ) ; } } } else { if ( ( control & LLC_S_FMT ) == LLC_S_FMT ) { ND_PRINT ( ( ndo , \"Supervisory,<S2SV_blank>%s,<S2SV_blank>rcv<S2SV_blank>seq<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( llc_supervisory_values , \"?\" , LLC_S_CMD ( control ) ) , LLC_IS_NR ( control ) , tok2str ( llc_flag_values , \"?\" , ( ssap_field & LLC_GSAP ) | ( control & LLC_IS_POLL ) ) , length + hdrlen ) ) ; return ( hdrlen ) ; } else { ND_PRINT ( ( ndo , \"Information,<S2SV_blank>send<S2SV_blank>seq<S2SV_blank>%u,<S2SV_blank>rcv<S2SV_blank>seq<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>length<S2SV_blank>%u\" , LLC_I_NS ( control ) , LLC_IS_NR ( control ) , tok2str ( llc_flag_values , \"?\" , ( ssap_field & LLC_GSAP ) | ( control & LLC_IS_POLL ) ) , length + hdrlen ) ) ; } } return ( - hdrlen ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p , length <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 static int cg_open ( const char * path , struct fuse_file_info * fi ) { const char * cgroup ; char * fpath = NULL , * path1 , * path2 , * cgdir = NULL , * controller ; struct cgfs_files * k = NULL ; struct file_info * file_info ; struct fuse_context * fc = fuse_get_context ( ) ; int ret ; if ( ! fc ) return - EIO ; controller = pick_controller_from_path ( fc , path ) ; if ( ! controller ) return - EIO ; cgroup = find_cgroup_in_path ( path ) ; if ( ! cgroup ) return - EINVAL ; get_cgdir_and_path ( cgroup , & cgdir , & fpath ) ; if ( ! fpath ) { path1 = \"/\" ; path2 = cgdir ; } else { path1 = cgdir ; path2 = fpath ; } k = cgfs_get_key ( controller , path1 , path2 ) ; if ( ! k ) { ret = - EINVAL ; goto out ; } free_key ( k ) ; <S2SV_StartBug> if ( ! fc_may_access ( fc , controller , path1 , path2 , fi -> flags ) ) { <S2SV_EndBug> ret = - EACCES ; goto out ; } file_info = malloc ( sizeof ( * file_info ) ) ; if ( ! file_info ) { ret = - ENOMEM ; goto out ; } file_info -> controller = must_copy_string ( controller ) ; file_info -> cgroup = must_copy_string ( path1 ) ; file_info -> file = must_copy_string ( path2 ) ; file_info -> type = LXC_TYPE_CGFILE ; file_info -> buf = NULL ; file_info -> buflen = 0 ; fi -> fh = ( unsigned long ) file_info ; ret = 0 ; out : free ( cgdir ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! caller_may_see_dir ( fc -> pid , controller , path1 ) ) { ret = - ENOENT ; goto out ; } if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_setup_block_planes ( MACROBLOCKD * xd , int ss_x , int ss_y ) { int i ; for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) { xd -> plane [ i ] . plane_type = i ? PLANE_TYPE_UV : PLANE_TYPE_Y ; xd -> plane [ i ] . subsampling_x = i ? ss_x : 0 ; xd -> plane [ i ] . subsampling_y = i ? ss_y : 0 ; } <S2SV_StartBug> # if CONFIG_ALPHA <S2SV_EndBug> xd -> plane [ 3 ] . plane_type = PLANE_TYPE_Y ; xd -> plane [ 3 ] . subsampling_x = 0 ; xd -> plane [ 3 ] . subsampling_y = 0 ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16525\n\n```\nCWE-416 void usb_serial_console_disconnect ( struct usb_serial * serial ) { <S2SV_StartBug> if ( serial -> port [ 0 ] == usbcons_info . port ) { <S2SV_EndBug> usb_serial_console_exit ( ) ; usb_serial_put ( serial ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( serial -> port [ 0 ] &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9120\n\n```\nCWE-264 <S2SV_StartBug> static int ion_handle_put ( struct ion_handle * handle ) <S2SV_EndBug> { struct ion_client * client = handle -> client ; int ret ; mutex_lock ( & client -> lock ) ; <S2SV_StartBug> ret = kref_put ( & handle -> ref , ion_handle_destroy ) ; <S2SV_EndBug> mutex_unlock ( & client -> lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> int ion_handle_put ( <S2SV_ModStart> ; ret = ion_handle_put_nolock ( handle <S2SV_ModEnd> ) ; mutex_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3571\n\n```\nCWE-000 int dtls1_get_record ( SSL * s ) { int ssl_major , ssl_minor ; int i , n ; SSL3_RECORD * rr ; unsigned char * p = NULL ; unsigned short version ; DTLS1_BITMAP * bitmap ; unsigned int is_next_epoch ; rr = & ( s -> s3 -> rrec ) ; dtls1_process_buffered_records ( s ) ; if ( dtls1_get_processed_record ( s ) ) return 1 ; again : if ( ( s -> rstate != SSL_ST_READ_BODY ) || ( s -> packet_length < DTLS1_RT_HEADER_LENGTH ) ) { n = ssl3_read_n ( s , DTLS1_RT_HEADER_LENGTH , s -> s3 -> rbuf . len , 0 ) ; if ( n <= 0 ) return ( n ) ; if ( s -> packet_length != DTLS1_RT_HEADER_LENGTH ) { s -> packet_length = 0 ; goto again ; } s -> rstate = SSL_ST_READ_BODY ; p = s -> packet ; if ( s -> msg_callback ) s -> msg_callback ( 0 , 0 , SSL3_RT_HEADER , p , DTLS1_RT_HEADER_LENGTH , s , s -> msg_callback_arg ) ; rr -> type = * ( p ++ ) ; ssl_major = * ( p ++ ) ; ssl_minor = * ( p ++ ) ; version = ( ssl_major << 8 ) | ssl_minor ; n2s ( p , rr -> epoch ) ; memcpy ( & ( s -> s3 -> read_sequence [ 2 ] ) , p , 6 ) ; p += 6 ; n2s ( p , rr -> length ) ; if ( ! s -> first_packet ) { if ( version != s -> version ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( ( version & 0xff00 ) != ( s -> version & 0xff00 ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( rr -> length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( rr -> length > s -> packet_length - DTLS1_RT_HEADER_LENGTH ) { i = rr -> length ; n = ssl3_read_n ( s , i , i , 1 ) ; if ( n != i ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } s -> rstate = SSL_ST_READ_HEADER ; bitmap = dtls1_get_bitmap ( s , rr , & is_next_epoch ) ; if ( bitmap == NULL ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP if ( ! BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) ) { # endif if ( ! ( s -> d1 -> listen && rr -> type == SSL3_RT_HANDSHAKE && <S2SV_StartBug> * p == SSL3_MT_CLIENT_HELLO ) && <S2SV_EndBug> ! dtls1_record_replay_check ( s , bitmap ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP } # endif if ( rr -> length == 0 ) goto again ; if ( is_next_epoch ) { if ( ( SSL_in_init ( s ) || s -> in_handshake ) && ! s -> d1 -> listen ) { dtls1_buffer_record ( s , & ( s -> d1 -> unprocessed_rcds ) , rr -> seq_num ) ; } rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( ! dtls1_process_record ( s ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == SSL3_RT_HANDSHAKE && s -> packet_length > DTLS1_RT_HEADER_LENGTH && s -> packet [ DTLS1_RT_HEADER_LENGTH ] <S2SV_ModEnd> == SSL3_MT_CLIENT_HELLO )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6927\n\n```\nCWE-190 static int futex_requeue ( u32 __user * uaddr1 , unsigned int flags , u32 __user * uaddr2 , int nr_wake , int nr_requeue , u32 * cmpval , int requeue_pi ) { union futex_key key1 = FUTEX_KEY_INIT , key2 = FUTEX_KEY_INIT ; int drop_count = 0 , task_count = 0 , ret ; struct futex_pi_state * pi_state = NULL ; struct futex_hash_bucket * hb1 , * hb2 ; struct futex_q * this , * next ; <S2SV_StartBug> DEFINE_WAKE_Q ( wake_q ) ; <S2SV_EndBug> if ( ! IS_ENABLED ( CONFIG_FUTEX_PI ) && requeue_pi ) return - ENOSYS ; if ( requeue_pi ) { if ( uaddr1 == uaddr2 ) return - EINVAL ; if ( refill_pi_state_cache ( ) ) return - ENOMEM ; if ( nr_wake != 1 ) return - EINVAL ; } retry : ret = get_futex_key ( uaddr1 , flags & FLAGS_SHARED , & key1 , VERIFY_READ ) ; if ( unlikely ( ret != 0 ) ) goto out ; ret = get_futex_key ( uaddr2 , flags & FLAGS_SHARED , & key2 , requeue_pi ? VERIFY_WRITE : VERIFY_READ ) ; if ( unlikely ( ret != 0 ) ) goto out_put_key1 ; if ( requeue_pi && match_futex ( & key1 , & key2 ) ) { ret = - EINVAL ; goto out_put_keys ; } hb1 = hash_futex ( & key1 ) ; hb2 = hash_futex ( & key2 ) ; retry_private : hb_waiters_inc ( hb2 ) ; double_lock_hb ( hb1 , hb2 ) ; if ( likely ( cmpval != NULL ) ) { u32 curval ; ret = get_futex_value_locked ( & curval , uaddr1 ) ; if ( unlikely ( ret ) ) { double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; ret = get_user ( curval , uaddr1 ) ; if ( ret ) goto out_put_keys ; if ( ! ( flags & FLAGS_SHARED ) ) goto retry_private ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; goto retry ; } if ( curval != * cmpval ) { ret = - EAGAIN ; goto out_unlock ; } } if ( requeue_pi && ( task_count - nr_wake < nr_requeue ) ) { ret = futex_proxy_trylock_atomic ( uaddr2 , hb1 , hb2 , & key1 , & key2 , & pi_state , nr_requeue ) ; if ( ret > 0 ) { WARN_ON ( pi_state ) ; drop_count ++ ; task_count ++ ; ret = lookup_pi_state ( uaddr2 , ret , hb2 , & key2 , & pi_state ) ; } switch ( ret ) { case 0 : break ; case - EFAULT : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; ret = fault_in_user_writeable ( uaddr2 ) ; if ( ! ret ) goto retry ; goto out ; case - EAGAIN : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; cond_resched ( ) ; goto retry ; default : goto out_unlock ; } } plist_for_each_entry_safe ( this , next , & hb1 -> chain , list ) { if ( task_count - nr_wake >= nr_requeue ) break ; if ( ! match_futex ( & this -> key , & key1 ) ) continue ; if ( ( requeue_pi && ! this -> rt_waiter ) || ( ! requeue_pi && this -> rt_waiter ) || this -> pi_state ) { ret = - EINVAL ; break ; } if ( ++ task_count <= nr_wake && ! requeue_pi ) { mark_wake_futex ( & wake_q , this ) ; continue ; } if ( requeue_pi && ! match_futex ( this -> requeue_pi_key , & key2 ) ) { ret = - EINVAL ; break ; } if ( requeue_pi ) { get_pi_state ( pi_state ) ; this -> pi_state = pi_state ; ret = rt_mutex_start_proxy_lock ( & pi_state -> pi_mutex , this -> rt_waiter , this -> task ) ; if ( ret == 1 ) { requeue_pi_wake_futex ( this , & key2 , hb2 ) ; drop_count ++ ; continue ; } else if ( ret ) { this -> pi_state = NULL ; put_pi_state ( pi_state ) ; break ; } } requeue_futex ( this , hb1 , hb2 , & key2 ) ; drop_count ++ ; } put_pi_state ( pi_state ) ; out_unlock : double_unlock_hb ( hb1 , hb2 ) ; wake_up_q ( & wake_q ) ; hb_waiters_dec ( hb2 ) ; while ( -- drop_count >= 0 ) drop_futex_key_refs ( & key1 ) ; out_put_keys : put_futex_key ( & key2 ) ; out_put_key1 : put_futex_key ( & key1 ) ; out : return ret ? ret : task_count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( wake_q ) ; if ( nr_wake < 0 || nr_requeue < 0 ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static expr_ty ast_for_decorator ( struct compiling * c , const node * n ) { expr_ty d = NULL ; expr_ty name_expr ; REQ ( n , decorator ) ; REQ ( CHILD ( n , 0 ) , AT ) ; REQ ( RCHILD ( n , - 1 ) , NEWLINE ) ; name_expr = ast_for_dotted_name ( c , CHILD ( n , 1 ) ) ; if ( ! name_expr ) return NULL ; if ( NCH ( n ) == 3 ) { d = name_expr ; name_expr = NULL ; } else if ( NCH ( n ) == 5 ) { d = Call ( name_expr , NULL , NULL , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; if ( ! d ) return NULL ; name_expr = NULL ; } else { <S2SV_StartBug> d = ast_for_call ( c , CHILD ( n , 3 ) , name_expr ) ; <S2SV_EndBug> if ( ! d ) return NULL ; name_expr = NULL ; } return d ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) , name_expr , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void copy_and_extend_plane ( unsigned char * s , int sp , unsigned char * d , int dp , int h , int w , int et , int el , int eb , int er ) { int i ; unsigned char * src_ptr1 , * src_ptr2 ; unsigned char * dest_ptr1 , * dest_ptr2 ; int linesize ; src_ptr1 = s ; src_ptr2 = s + w - 1 ; dest_ptr1 = d - el ; dest_ptr2 = d + w ; for ( i = 0 ; i < h ; i ++ ) { <S2SV_StartBug> vpx_memset ( dest_ptr1 , src_ptr1 [ 0 ] , el ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( dest_ptr1 + el , src_ptr1 , w ) ; <S2SV_EndBug> vpx_memset ( dest_ptr2 , src_ptr2 [ 0 ] , er ) ; src_ptr1 += sp ; src_ptr2 += sp ; dest_ptr1 += dp ; dest_ptr2 += dp ; } src_ptr1 = d - el ; src_ptr2 = d + dp * ( h - 1 ) - el ; dest_ptr1 = d + dp * ( - et ) - el ; dest_ptr2 = d + dp * ( h ) - el ; linesize = el + er + w ; for ( i = 0 ; i < et ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dest_ptr1 , src_ptr1 , linesize ) ; <S2SV_EndBug> dest_ptr1 += dp ; } for ( i = 0 ; i < eb ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dest_ptr2 , src_ptr2 , linesize ) ; <S2SV_EndBug> dest_ptr2 += dp ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( dest_ptr1 , <S2SV_ModStart> el ) ; memcpy ( dest_ptr1 + el , src_ptr1 , w ) ; memset <S2SV_ModEnd> ( dest_ptr2 , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dest_ptr1 , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dest_ptr2 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6663\n\n```\nCWE-362 int my_redel ( const char * org_name , const char * tmp_name , time_t backup_time_stamp , myf MyFlags ) { int error = 1 ; DBUG_ENTER ( \"my_redel\" ) ; DBUG_PRINT ( \"my\" , ( \"org_name:<S2SV_blank>\\'%s\\'<S2SV_blank>tmp_name:<S2SV_blank>\\'%s\\'<S2SV_blank><S2SV_blank>MyFlags:<S2SV_blank>%d\" , org_name , tmp_name , MyFlags ) ) ; <S2SV_StartBug> if ( my_copystat ( org_name , tmp_name , MyFlags ) < 0 ) <S2SV_EndBug> goto end ; if ( MyFlags & MY_REDEL_MAKE_BACKUP ) { char name_buff [ FN_REFLEN + MY_BACKUP_NAME_EXTRA_LENGTH ] ; my_create_backup_name ( name_buff , org_name , backup_time_stamp ) ; if ( my_rename ( org_name , name_buff , MyFlags ) ) goto end ; } else if ( my_delete ( org_name , MyFlags ) ) goto end ; if ( my_rename ( tmp_name , org_name , MyFlags ) ) goto end ; error = 0 ; end : DBUG_RETURN ( error ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! my_disable_copystat_in_redel &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0377\n\n```\nCWE-200 <S2SV_StartBug> static inline int <S2SV_EndBug> addrs_in_same_network_family ( const tor_addr_t * a1 , const tor_addr_t * a2 ) { return 0 == tor_addr_compare_masked ( a1 , a2 , 16 , CMP_SEMANTIC ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> int addrs_in_same_network_family (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5354\n\n```\nCWE-476 static int dissect_usb_video_control_interface_descriptor ( proto_tree * parent_tree , tvbuff_t * tvb , guint8 descriptor_len , packet_info * pinfo , usb_conv_info_t * usb_conv_info ) { video_conv_info_t * video_conv_info = NULL ; video_entity_t * entity = NULL ; proto_item * item = NULL ; proto_item * subtype_item = NULL ; proto_tree * tree = NULL ; guint8 entity_id = 0 ; guint16 terminal_type = 0 ; int offset = 0 ; guint8 subtype ; subtype = tvb_get_guint8 ( tvb , offset + 2 ) ; if ( parent_tree ) { const gchar * subtype_str ; subtype_str = val_to_str_ext ( subtype , & vc_if_descriptor_subtypes_ext , \"Unknown<S2SV_blank>(0x%x)\" ) ; tree = proto_tree_add_subtree_format ( parent_tree , tvb , offset , descriptor_len , ett_descriptor_video_control , & item , \"VIDEO<S2SV_blank>CONTROL<S2SV_blank>INTERFACE<S2SV_blank>DESCRIPTOR<S2SV_blank>[%s]\" , subtype_str ) ; } dissect_usb_descriptor_header ( tree , tvb , offset , & vid_descriptor_type_vals_ext ) ; subtype_item = proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_subtype , tvb , offset + 2 , 1 , ENC_LITTLE_ENDIAN ) ; offset += 3 ; if ( subtype == VC_HEADER ) { guint8 num_vs_interfaces ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_bcdUVC , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_vid_ifdesc_wTotalLength , tvb , offset + 2 , 2 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_dwClockFrequency , tvb , offset + 4 , 4 , ENC_LITTLE_ENDIAN ) ; num_vs_interfaces = tvb_get_guint8 ( tvb , offset + 8 ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_bInCollection , tvb , offset + 8 , 1 , ENC_LITTLE_ENDIAN ) ; if ( num_vs_interfaces > 0 ) { proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_baInterfaceNr , tvb , offset + 9 , num_vs_interfaces , ENC_NA ) ; } offset += 9 + num_vs_interfaces ; } else if ( ( subtype == VC_INPUT_TERMINAL ) || ( subtype == VC_OUTPUT_TERMINAL ) ) { entity_id = tvb_get_guint8 ( tvb , offset ) ; terminal_type = tvb_get_letohs ( tvb , offset + 1 ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_terminal_id , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_terminal_type , tvb , offset + 1 , 2 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_assoc_terminal , tvb , offset + 3 , 1 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; if ( subtype == VC_OUTPUT_TERMINAL ) { proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_src_id , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; ++ offset ; } proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_iTerminal , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; ++ offset ; if ( subtype == VC_INPUT_TERMINAL ) { if ( terminal_type == ITT_CAMERA ) { offset = dissect_usb_video_camera_terminal ( tree , tvb , offset ) ; } else if ( terminal_type == ITT_MEDIA_TRANSPORT_INPUT ) { } } if ( subtype == VC_OUTPUT_TERMINAL ) { if ( terminal_type == OTT_MEDIA_TRANSPORT_OUTPUT ) { } } } else { entity_id = tvb_get_guint8 ( tvb , offset ) ; proto_tree_add_item ( tree , hf_usb_vid_control_ifdesc_unit_id , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; ++ offset ; if ( subtype == VC_PROCESSING_UNIT ) { offset = dissect_usb_video_processing_unit ( tree , tvb , offset ) ; } else if ( subtype == VC_SELECTOR_UNIT ) { offset = dissect_usb_video_selector_unit ( tree , tvb , offset ) ; } else if ( subtype == VC_EXTENSION_UNIT ) { offset = dissect_usb_video_extension_unit ( tree , tvb , offset ) ; } else if ( subtype == VC_ENCODING_UNIT ) { } else { expert_add_info_format ( pinfo , subtype_item , & ei_usb_vid_subtype_unknown , \"Unknown<S2SV_blank>VC<S2SV_blank>subtype<S2SV_blank>%u\" , subtype ) ; } } if ( offset < descriptor_len ) { proto_tree_add_item ( tree , hf_usb_vid_descriptor_data , tvb , offset , descriptor_len - offset , ENC_NA ) ; } if ( entity_id != 0 ) proto_item_append_text ( item , \"<S2SV_blank>(Entity<S2SV_blank>%d)\" , entity_id ) ; if ( subtype != VC_HEADER && usb_conv_info ) { usb_conv_info = get_usb_iface_conv_info ( pinfo , usb_conv_info -> interfaceNum ) ; video_conv_info = ( video_conv_info_t * ) usb_conv_info -> class_data ; if ( ! video_conv_info ) { video_conv_info = wmem_new ( wmem_file_scope ( ) , video_conv_info_t ) ; video_conv_info -> entities = wmem_tree_new ( wmem_file_scope ( ) ) ; usb_conv_info -> class_data = video_conv_info ; <S2SV_StartBug> } <S2SV_EndBug> entity = ( video_entity_t * ) wmem_tree_lookup32 ( video_conv_info -> entities , entity_id ) ; if ( ! entity ) { entity = wmem_new ( wmem_file_scope ( ) , video_entity_t ) ; entity -> entityID = entity_id ; entity -> subtype = subtype ; entity -> terminalType = terminal_type ; wmem_tree_insert32 ( video_conv_info -> entities , entity_id , entity ) ; } } return descriptor_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = video_conv_info ; usb_conv_info -> class_data_type = USB_CONV_VIDEO ; } else if ( usb_conv_info -> class_data_type != USB_CONV_VIDEO ) { return descriptor_len ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int setup_ttydir_console ( const struct lxc_rootfs * rootfs , const struct lxc_console * console , char * ttydir ) { char path [ MAXPATHLEN ] , lxcpath [ MAXPATHLEN ] ; int ret ; ret = snprintf ( path , sizeof ( path ) , \"%s/dev/%s\" , rootfs -> mount , ttydir ) ; if ( ret >= sizeof ( path ) ) return - 1 ; ret = mkdir ( path , 0755 ) ; if ( ret && errno != EEXIST ) { SYSERROR ( \"failed<S2SV_blank>with<S2SV_blank>errno<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>create<S2SV_blank>%s\" , errno , path ) ; return - 1 ; } INFO ( \"created<S2SV_blank>%s\" , path ) ; ret = snprintf ( lxcpath , sizeof ( lxcpath ) , \"%s/dev/%s/console\" , rootfs -> mount , ttydir ) ; if ( ret >= sizeof ( lxcpath ) ) { ERROR ( \"console<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } snprintf ( path , sizeof ( path ) , \"%s/dev/console\" , rootfs -> mount ) ; ret = unlink ( path ) ; if ( ret && errno != ENOENT ) { SYSERROR ( \"error<S2SV_blank>unlinking<S2SV_blank>%s\" , path ) ; return - 1 ; } ret = creat ( lxcpath , 0660 ) ; if ( ret == - 1 && errno != EEXIST ) { SYSERROR ( \"error<S2SV_blank>%d<S2SV_blank>creating<S2SV_blank>%s\" , errno , lxcpath ) ; return - 1 ; } if ( ret >= 0 ) close ( ret ) ; if ( console -> master < 0 ) { INFO ( \"no<S2SV_blank>console\" ) ; return 0 ; } <S2SV_StartBug> if ( mount ( console -> name , lxcpath , \"none\" , MS_BIND , 0 ) ) { <S2SV_EndBug> ERROR ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'\" , console -> name , lxcpath ) ; return - 1 ; } ret = snprintf ( lxcpath , sizeof ( lxcpath ) , \"%s/console\" , ttydir ) ; if ( ret >= sizeof ( lxcpath ) ) { ERROR ( \"lxc/console<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } ret = symlink ( lxcpath , path ) ; if ( ret ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>symlink<S2SV_blank>for<S2SV_blank>console\" ) ; return - 1 ; } INFO ( \"console<S2SV_blank>has<S2SV_blank>been<S2SV_blank>setup<S2SV_blank>on<S2SV_blank>%s\" , lxcpath ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( safe_mount ( console -> name , lxcpath , \"none\" , MS_BIND , 0 , rootfs -> mount ) ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'\" , <S2SV_ModEnd> console -> name <S2SV_ModStart> name , lxcpath ) ; return - 1 ; } ret = snprintf ( lxcpath , sizeof ( lxcpath ) , \"%s/console\" , ttydir ) ; if ( ret >= sizeof ( lxcpath ) ) { ERROR ( \"lxc/console<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } ret = symlink ( lxcpath , path ) ; if ( ret ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>symlink<S2SV_blank>for<S2SV_blank>console\" ) ; return - 1 ; } INFO ( \"console<S2SV_blank>has<S2SV_blank>been<S2SV_blank>setup<S2SV_blank>on<S2SV_blank>%s\" , lxcpath ) ; return 0 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * init_2_svc ( krb5_ui_4 * arg , struct svc_req * rqstp ) { static generic_ret ret ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; kadm5_server_handle_t handle ; OM_uint32 minor_stat ; const char * errmsg = NULL ; size_t clen , slen ; char * cdots , * sdots ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( * arg , rqstp , & handle ) ) ) goto exit_func ; if ( ! ( ret . code = check_handle ( ( void * ) handle ) ) ) { ret . api_version = handle -> api_version ; } free_server_handle ( handle ) ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( ret . code != 0 ) errmsg = krb5_get_error_message ( NULL , ret . code ) ; clen = client_name . length ; trunc_name ( & clen , & cdots ) ; slen = service_name . length ; trunc_name ( & slen , & sdots ) ; krb5_klog_syslog ( LOG_NOTICE , _ ( \"Request:<S2SV_blank>kadm5_init,<S2SV_blank>%.*s%s,<S2SV_blank>%s,<S2SV_blank>\" \"client=%.*s%s,<S2SV_blank>service=%.*s%s,<S2SV_blank>addr=%s,<S2SV_blank>\" \"vers=%d,<S2SV_blank>flavor=%d\" ) , ( int ) clen , ( char * ) client_name . value , cdots , errmsg ? errmsg : _ ( \"success\" ) , ( int ) clen , ( char * ) client_name . value , cdots , ( int ) slen , ( char * ) service_name . value , sdots , client_addr ( rqstp -> rq_xprt ) , ret . api_version & ~ ( KADM5_API_VERSION_MASK ) , rqstp -> rq_cred . oa_flavor ) ; if ( errmsg != NULL ) krb5_free_error_message ( NULL , errmsg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : return ( & ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; kadm5_server_handle_t handle <S2SV_ModStart> errmsg ) ; exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> return ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14882\n\n```\nCWE-125 static void mldv2_report_print ( netdissect_options * ndo , const u_char * bp , u_int len ) { const struct icmp6_hdr * icp = ( const struct icmp6_hdr * ) bp ; u_int group , nsrcs , ngroups ; u_int i , j ; if ( len < 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[invalid<S2SV_blank>len<S2SV_blank>%d]\" , len ) ) ; return ; } ND_TCHECK ( icp -> icmp6_data16 [ 1 ] ) ; ngroups = EXTRACT_16BITS ( & icp -> icmp6_data16 [ 1 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%d<S2SV_blank>group<S2SV_blank>record(s)\" , ngroups ) ) ; if ( ndo -> ndo_vflag > 0 ) { group = 8 ; for ( i = 0 ; i < ngroups ; i ++ ) { if ( len < group + 20 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>groups]\" ) ) ; return ; } ND_TCHECK2 ( bp [ group + 4 ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>[gaddr<S2SV_blank>%s\" , ip6addr_string ( ndo , & bp [ group + 4 ] ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( mldv2report2str , \"<S2SV_blank>[v2-report-#%d]\" , bp [ group ] ) ) ) ; nsrcs = ( bp [ group + 2 ] << 8 ) + bp [ group + 3 ] ; if ( len < group + 20 + ( nsrcs * sizeof ( struct in6_addr ) ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>sources<S2SV_blank>%d]\" , nsrcs ) ) ; return ; } if ( ndo -> ndo_vflag == 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>%d<S2SV_blank>source(s)\" , nsrcs ) ) ; else { ND_PRINT ( ( ndo , \"<S2SV_blank>{\" ) ) ; for ( j = 0 ; j < nsrcs ; j ++ ) { ND_TCHECK2 ( bp [ group + 20 + j * sizeof ( struct in6_addr ) ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & bp [ group + 20 + j * sizeof ( struct in6_addr ) ] ) ) ) ; } ND_PRINT ( ( ndo , \"<S2SV_blank>}\" ) ) ; } group += 20 + nsrcs * sizeof ( struct in6_addr ) ; ND_PRINT ( ( ndo , \"]\" ) ) ; } } return ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"[|icmp6]\" ) ) ; <S2SV_EndBug> return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"%s\" , mldv2_tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 char * path_name ( const struct name_path * path , const char * name ) { const struct name_path * p ; char * n , * m ; int nlen = strlen ( name ) ; int len = nlen + 1 ; for ( p = path ; p ; p = p -> up ) { if ( p -> elem_len ) len += p -> elem_len + 1 ; } n = xmalloc ( len ) ; m = n + len - ( nlen + 1 ) ; <S2SV_StartBug> strcpy ( m , name ) ; <S2SV_EndBug> for ( p = path ; p ; p = p -> up ) { if ( p -> elem_len ) { m -= p -> elem_len + 1 ; memcpy ( m , p -> elem , p -> elem_len ) ; m [ p -> elem_len ] = '/' ; } } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; memcpy <S2SV_ModEnd> ( m , <S2SV_ModStart> m , name , nlen + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0555\n\n```\nCWE-200 WORD32 ih264d_mark_err_slice_skip ( dec_struct_t * ps_dec , WORD32 num_mb_skip , UWORD8 u1_is_idr_slice , UWORD16 u2_frame_num , pocstruct_t * ps_cur_poc , WORD32 prev_slice_err ) { WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 ; UWORD32 u1_mb_idx = ps_dec -> u1_mb_idx ; UWORD32 i2_mb_skip_run ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD32 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end ; UWORD32 u1_tfr_n_mb ; UWORD32 u1_decode_nmb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD16 u2_total_mbs_coded ; UWORD32 u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; parse_part_params_t * ps_part_info ; WORD32 ret ; UNUSED ( u1_is_idr_slice ) ; if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return 0 ; } if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag && ( num_mb_skip & 1 ) ) { num_mb_skip ++ ; } ps_dec -> ps_dpb_cmds -> u1_long_term_reference_flag = 0 ; if ( prev_slice_err == 1 ) { ps_dec -> ps_cur_slice -> u2_frame_num = u2_frame_num ; { WORD32 i , j , poc = 0 ; ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = 0 ; ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; if ( ps_dec -> ps_cur_pic != NULL ) poc = ps_dec -> ps_cur_pic -> i4_poc + 2 ; j = - 1 ; for ( i = 0 ; i < MAX_NUM_PIC_PARAMS ; i ++ ) { if ( ps_dec -> ps_pps [ i ] . u1_is_valid == TRUE ) { if ( ps_dec -> ps_pps [ i ] . ps_sps -> u1_is_valid == TRUE ) { j = i ; break ; } } } if ( j == - 1 ) { return ERROR_INV_SLICE_HDR_T ; } if ( ps_dec -> u4_pic_buf_got == 0 ) { ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_cur_slice -> u1_nal_ref_idc = 1 ; ps_dec -> ps_cur_slice -> u1_nal_unit_type = 1 ; ret = ih264d_start_of_pic ( ps_dec , poc , ps_cur_poc , ps_dec -> ps_cur_slice -> u2_frame_num , & ps_dec -> ps_pps [ j ] ) ; if ( ret != OK ) { return ret ; } } ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ 0 ] -> u1_pic_buf_id = 0 ; ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } <S2SV_StartBug> ps_dec -> u4_first_slice_in_pic = 0 ; <S2SV_EndBug> } else { dec_slice_struct_t * ps_parse_cur_slice ; ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; if ( ps_dec -> u1_slice_header_done && ps_parse_cur_slice == ps_dec -> ps_parse_cur_slice ) { if ( ( u1_mbaff ) && ( ps_dec -> u4_num_mbs_cur_nmb & 1 ) ) { ps_dec -> u4_num_mbs_cur_nmb = ps_dec -> u4_num_mbs_cur_nmb - 1 ; ps_dec -> u2_cur_mb_addr -- ; } u1_num_mbs = ps_dec -> u4_num_mbs_cur_nmb ; if ( u1_num_mbs ) { ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs - 1 ; } else { if ( ps_dec -> u1_separate_parse ) { ps_cur_mb_info = ps_dec -> ps_nmb_info ; } else { ps_cur_mb_info = ps_dec -> ps_nmb_info + ps_dec -> u4_num_mbs_prev_nmb - 1 ; } } ps_dec -> u2_mby = ps_cur_mb_info -> u2_mby ; ps_dec -> u2_mbx = ps_cur_mb_info -> u2_mbx ; ps_dec -> u1_mb_ngbr_availablity = ps_cur_mb_info -> u1_mb_ngbr_availablity ; if ( u1_num_mbs ) { ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_prev_mb_parse_tu_coeff_data ; ps_dec -> u2_cur_mb_addr -- ; ps_dec -> i4_submb_ofst -= SUB_BLK_SIZE ; if ( ps_dec -> u1_pr_sl_type == P_SLICE || ps_dec -> u1_pr_sl_type == B_SLICE ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = 1 ; u1_tfr_n_mb = 1 ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; ps_dec -> u1_mb_idx = 0 ; ps_dec -> u4_num_mbs_cur_nmb = 0 ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; return 0 ; } if ( ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice < ( UWORD32 ) ( ps_dec -> u2_total_mbs_coded >> ps_slice -> u1_mbaff_frame_flag ) ) { ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; ps_dec -> u2_cur_slice_num ++ ; ps_dec -> ps_parse_cur_slice ++ ; } } else { ps_dec -> ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; } } { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( volatile void * * ) pu1_buf ; } ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = ps_dec -> u2_total_mbs_coded >> u1_mbaff ; ps_dec -> ps_cur_slice -> i1_slice_alpha_c0_offset = 0 ; ps_dec -> ps_cur_slice -> i1_slice_beta_offset = 0 ; if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ps_dec -> u2_prv_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> u2_total_mbs_coded >> u1_mbaff ; ps_dec -> ps_parse_cur_slice -> u2_log2Y_crwd = ps_dec -> ps_cur_slice -> u2_log2Y_crwd ; if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_parse_cur_slice -> slice_type = P_SLICE ; ps_dec -> pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( ps_dec -> ps_cur_slice -> u2_first_mb_in_slice - 1 , ps_dec -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( ps_dec -> ps_cur_slice -> u2_first_mb_in_slice - 1 , ps_dec -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= u1_mbaff ; ps_dec -> u1_slice_header_done = 2 ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; u1_num_mbs = u1_mb_idx ; u1_slice_end = 0 ; u1_tfr_n_mb = 0 ; u1_decode_nmb = 0 ; u1_num_mbsNby2 = 0 ; i2_cur_mb_addr = ps_dec -> u2_total_mbs_coded ; i2_mb_skip_run = num_mb_skip ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) break ; ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; if ( u1_mbaff ) ih264d_get_mb_info_cavlc_mbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; else ih264d_get_mb_info_cavlc_nonmbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) { ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; } ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> u1_sub_mb_num = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_mb_mc_mode = PRED_16x16 ; ps_cur_mb_info -> u1_cbp = 0 ; ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CAVLC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; i2_mb_skip_run -- ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; u1_num_mbs ++ ; u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ! i2_mb_skip_run ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; if ( u1_tfr_n_mb ) u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice ; H264_DEC_DEBUG_PRINT ( \"Mbs<S2SV_blank>in<S2SV_blank>slice:<S2SV_blank>%d\\\\n\" , ps_dec -> ps_cur_slice -> u4_mbs_in_slice ) ; if ( ps_dec -> u4_first_slice_in_pic != 0 ) { ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } } } <S2SV_ModEnd> } else {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_eventenable ( unsigned long arg ) <S2SV_EndBug> { struct mpt_ioctl_eventenable __user * uarg = ( void __user * ) arg ; <S2SV_StartBug> struct mpt_ioctl_eventenable karg ; <S2SV_EndBug> MPT_ADAPTER * ioc ; int iocnum ; if ( copy_from_user ( & karg , uarg , sizeof ( struct mpt_ioctl_eventenable ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_eventenable<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>mpt_ioctl_eventenable<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uarg ) ; <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> } if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || ( ioc == NULL ) ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_eventenable()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; } dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"mptctl_eventenable<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; if ( ioc -> events == NULL ) { int sz = MPTCTL_EVENT_LOG_SIZE * sizeof ( MPT_IOCTL_EVENTS ) ; ioc -> events = kzalloc ( sz , GFP_KERNEL ) ; if ( ! ioc -> events ) { printk ( MYIOC_s_ERR_FMT \":<S2SV_blank>ERROR<S2SV_blank>-<S2SV_blank>Insufficient<S2SV_blank>memory<S2SV_blank>to<S2SV_blank>add<S2SV_blank>adapter!\\\\n\" , ioc -> name ) ; return - ENOMEM ; } ioc -> alloc_total += sz ; ioc -> eventContext = 0 ; } ioc -> eventTypes = karg . eventTypes ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_eventenable ( MPT_ADAPTER * ioc , <S2SV_ModStart> struct mpt_ioctl_eventenable karg <S2SV_ModEnd> ; if ( <S2SV_ModStart> return - EFAULT <S2SV_ModEnd> ; } dctlprintk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 static int snd_ctl_elem_add ( struct snd_ctl_file * file , struct snd_ctl_elem_info * info , int replace ) { struct snd_card * card = file -> card ; struct snd_kcontrol kctl , * _kctl ; unsigned int access ; long private_size ; struct user_element * ue ; int idx , err ; if ( ! replace && card -> user_ctl_count >= MAX_USER_CONTROLS ) return - ENOMEM ; if ( info -> count < 1 ) return - EINVAL ; access = info -> access == 0 ? SNDRV_CTL_ELEM_ACCESS_READWRITE : ( info -> access & ( SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE | SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE ) ) ; info -> id . numid = 0 ; memset ( & kctl , 0 , sizeof ( kctl ) ) ; down_write ( & card -> controls_rwsem ) ; _kctl = snd_ctl_find_id ( card , & info -> id ) ; err = 0 ; if ( _kctl ) { if ( replace ) err = snd_ctl_remove ( card , _kctl ) ; else err = - EBUSY ; } else { if ( replace ) err = - ENOENT ; } up_write ( & card -> controls_rwsem ) ; if ( err < 0 ) return err ; memcpy ( & kctl . id , & info -> id , sizeof ( info -> id ) ) ; kctl . count = info -> owner ? info -> owner : 1 ; access |= SNDRV_CTL_ELEM_ACCESS_USER ; if ( info -> type == SNDRV_CTL_ELEM_TYPE_ENUMERATED ) kctl . info = snd_ctl_elem_user_enum_info ; else kctl . info = snd_ctl_elem_user_info ; if ( access & SNDRV_CTL_ELEM_ACCESS_READ ) kctl . get = snd_ctl_elem_user_get ; if ( access & SNDRV_CTL_ELEM_ACCESS_WRITE ) kctl . put = snd_ctl_elem_user_put ; if ( access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE ) { kctl . tlv . c = snd_ctl_elem_user_tlv ; access |= SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK ; } switch ( info -> type ) { case SNDRV_CTL_ELEM_TYPE_BOOLEAN : case SNDRV_CTL_ELEM_TYPE_INTEGER : private_size = sizeof ( long ) ; if ( info -> count > 128 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_INTEGER64 : private_size = sizeof ( long long ) ; if ( info -> count > 64 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_ENUMERATED : private_size = sizeof ( unsigned int ) ; if ( info -> count > 128 || info -> value . enumerated . items == 0 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_BYTES : private_size = sizeof ( unsigned char ) ; if ( info -> count > 512 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_IEC958 : private_size = sizeof ( struct snd_aes_iec958 ) ; if ( info -> count != 1 ) return - EINVAL ; break ; default : return - EINVAL ; } private_size *= info -> count ; ue = kzalloc ( sizeof ( struct user_element ) + private_size , GFP_KERNEL ) ; if ( ue == NULL ) return - ENOMEM ; <S2SV_StartBug> ue -> info = * info ; <S2SV_EndBug> ue -> info . access = 0 ; ue -> elem_data = ( char * ) ue + sizeof ( * ue ) ; ue -> elem_data_size = private_size ; if ( ue -> info . type == SNDRV_CTL_ELEM_TYPE_ENUMERATED ) { err = snd_ctl_elem_init_enum_names ( ue ) ; if ( err < 0 ) { kfree ( ue ) ; return err ; } } kctl . private_free = snd_ctl_elem_user_free ; _kctl = snd_ctl_new ( & kctl , access ) ; if ( _kctl == NULL ) { kfree ( ue -> priv_data ) ; kfree ( ue ) ; return - ENOMEM ; } _kctl -> private_data = ue ; for ( idx = 0 ; idx < _kctl -> count ; idx ++ ) _kctl -> vd [ idx ] . owner = file ; err = snd_ctl_add ( card , _kctl ) ; if ( err < 0 ) return err ; down_write ( & card -> controls_rwsem ) ; card -> user_ctl_count ++ ; up_write ( & card -> controls_rwsem ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ue -> card = card ; ue ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _hostsock_send ( oe_fd_t * sock_ , const void * buf , size_t count , int flags ) { ssize_t ret = - 1 ; sock_t * sock = _cast_sock ( sock_ ) ; oe_errno = 0 ; <S2SV_StartBug> if ( ! sock || ( count && ! buf ) ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( oe_syscall_send_ocall ( & ret , sock -> host_fd , buf , count , flags ) != OE_OK ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> done : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! buf ) || count > OE_SSIZE_MAX <S2SV_ModStart> OE_EINVAL ) ; if ( ret > ( ssize_t ) count ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_entropy_context_b ( int plane , int block , BLOCK_SIZE plane_bsize , TX_SIZE tx_size , void * arg ) { struct tokenize_b_args * const args = arg ; <S2SV_StartBug> MACROBLOCKD * const xd = args -> xd ; <S2SV_EndBug> <S2SV_StartBug> struct macroblock_plane * p = & args -> cpi -> mb . plane [ plane ] ; <S2SV_EndBug> struct macroblockd_plane * pd = & xd -> plane [ plane ] ; int aoff , loff ; txfrm_block_to_raster_xy ( plane_bsize , tx_size , block , & aoff , & loff ) ; vp9_set_contexts ( xd , pd , plane_bsize , tx_size , p -> eobs [ block ] > 0 , aoff , loff ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = arg ; ThreadData * const td = args -> td ; MACROBLOCK * const x = & td -> mb ; <S2SV_ModStart> const xd = & x -> e_mbd <S2SV_ModEnd> ; struct macroblock_plane <S2SV_ModStart> p = & x -> <S2SV_ModEnd> plane [ plane\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * modify_principal_2_svc ( mprinc_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; restriction_t * rp ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> rec . principal , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_MODIFY , arg -> rec . principal , & rp ) || kadm5int_acl_impose_restrictions ( handle -> context , & arg -> rec , & arg -> mask , rp ) ) { ret . code = KADM5_AUTH_MODIFY ; log_unauth ( \"kadm5_modify_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_modify_principal ( ( void * ) handle , & arg -> rec , arg -> mask ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_modify_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_StartBug> exit_func : <S2SV_EndBug> free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : <S2SV_ModStart> service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0556\n\n```\nCWE-200 IMPEG2D_ERROR_CODES_T impeg2d_dec_seq_hdr ( dec_state_t * ps_dec ) { stream_t * ps_stream ; ps_stream = & ps_dec -> s_bit_stream ; UWORD16 u2_height ; UWORD16 u2_width ; if ( impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) != SEQUENCE_HEADER_CODE ) { impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; return IMPEG2D_FRM_HDR_START_CODE_NOT_FOUND ; } impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; u2_width = impeg2d_bit_stream_get ( ps_stream , 12 ) ; u2_height = impeg2d_bit_stream_get ( ps_stream , 12 ) ; if ( ( u2_width != ps_dec -> u2_horizontal_size ) || ( u2_height != ps_dec -> u2_vertical_size ) ) { if ( 0 == ps_dec -> u2_header_done ) { ps_dec -> u2_horizontal_size = u2_width ; ps_dec -> u2_vertical_size = u2_height ; if ( 0 == ps_dec -> u4_frm_buf_stride ) { ps_dec -> u4_frm_buf_stride = ( UWORD32 ) ALIGN16 ( u2_width ) ; } } else { if ( ( u2_width > ps_dec -> u2_create_max_width ) || ( u2_height > ps_dec -> u2_create_max_height ) ) { IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS ; ps_dec -> u2_reinit_max_height = u2_height ; ps_dec -> u2_reinit_max_width = u2_width ; return e_error ; } else { return ( IMPEG2D_ERROR_CODES_T ) IVD_RES_CHANGED ; } } } if ( ( ps_dec -> u2_horizontal_size > ps_dec -> u2_create_max_width ) || ( ps_dec -> u2_vertical_size > ps_dec -> u2_create_max_height ) ) { IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS ; return SET_IVD_FATAL_ERROR ( e_error ) ; } ps_dec -> u2_aspect_ratio_info = impeg2d_bit_stream_get ( ps_stream , 4 ) ; <S2SV_StartBug> ps_dec -> u2_frame_rate_code = impeg2d_bit_stream_get ( ps_stream , 4 ) ; <S2SV_EndBug> impeg2d_bit_stream_flush ( ps_stream , 18 ) ; GET_MARKER_BIT ( ps_dec , ps_stream ) ; impeg2d_bit_stream_flush ( ps_stream , 11 ) ; if ( impeg2d_bit_stream_get_bit ( ps_stream ) == 1 ) { UWORD16 i ; for ( i = 0 ; i < NUM_PELS_IN_BLOCK ; i ++ ) { ps_dec -> au1_intra_quant_matrix [ gau1_impeg2_inv_scan_zig_zag [ i ] ] = ( UWORD8 ) impeg2d_bit_stream_get ( ps_stream , 8 ) ; } } else { memcpy ( ps_dec -> au1_intra_quant_matrix , gau1_impeg2_intra_quant_matrix_default , NUM_PELS_IN_BLOCK ) ; } if ( impeg2d_bit_stream_get_bit ( ps_stream ) == 1 ) { UWORD16 i ; for ( i = 0 ; i < NUM_PELS_IN_BLOCK ; i ++ ) { ps_dec -> au1_inter_quant_matrix [ gau1_impeg2_inv_scan_zig_zag [ i ] ] = ( UWORD8 ) impeg2d_bit_stream_get ( ps_stream , 8 ) ; } } else { memcpy ( ps_dec -> au1_inter_quant_matrix , gau1_impeg2_inter_quant_matrix_default , NUM_PELS_IN_BLOCK ) ; } impeg2d_next_start_code ( ps_dec ) ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 4 ) ; if ( ps_dec -> u2_frame_rate_code > MPEG2_MAX_FRAME_RATE_CODE ) { return IMPEG2D_FRM_HDR_DECODE_ERR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 static int scm_fp_copy ( struct cmsghdr * cmsg , struct scm_fp_list * * fplp ) { int * fdp = ( int * ) CMSG_DATA ( cmsg ) ; struct scm_fp_list * fpl = * fplp ; struct file * * fpp ; int i , num ; num = ( cmsg -> cmsg_len - CMSG_ALIGN ( sizeof ( struct cmsghdr ) ) ) / sizeof ( int ) ; if ( num <= 0 ) return 0 ; if ( num > SCM_MAX_FD ) return - EINVAL ; if ( ! fpl ) { fpl = kmalloc ( sizeof ( struct scm_fp_list ) , GFP_KERNEL ) ; if ( ! fpl ) return - ENOMEM ; * fplp = fpl ; fpl -> count = 0 ; fpl -> max = SCM_MAX_FD ; <S2SV_StartBug> } <S2SV_EndBug> fpp = & fpl -> fp [ fpl -> count ] ; if ( fpl -> count + num > fpl -> max ) return - EINVAL ; for ( i = 0 ; i < num ; i ++ ) { int fd = fdp [ i ] ; struct file * file ; if ( fd < 0 || ! ( file = fget_raw ( fd ) ) ) return - EBADF ; * fpp ++ = file ; fpl -> count ++ ; } <S2SV_StartBug> return num ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = SCM_MAX_FD ; fpl -> user = NULL ; <S2SV_ModStart> ++ ; } if ( ! fpl -> user ) fpl -> user = get_uid ( current_user ( ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 char * cJSON_PrintUnformatted ( cJSON * item ) { <S2SV_StartBug> return print_value ( item , 0 , 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 , 0 , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_arguments ( PyObject * obj , arguments_ty * out , PyArena * arena ) { PyObject * tmp = NULL ; asdl_seq * args ; arg_ty vararg ; asdl_seq * kwonlyargs ; asdl_seq * kw_defaults ; arg_ty kwarg ; asdl_seq * defaults ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_args ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_args ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"arguments<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; args = _Ta3_asdl_seq_new ( len , arena ) ; if ( args == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> arg_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_arg ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"arguments<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( args , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arguments\" ) ; return 1 ; } <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_vararg ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_vararg ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_arg ( tmp , & vararg , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { vararg = NULL ; } if ( _PyObject_HasAttrId ( obj , & PyId_kwonlyargs ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_kwonlyargs ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"arguments<S2SV_blank>field<S2SV_blank>\\\\\"kwonlyargs\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; kwonlyargs = _Ta3_asdl_seq_new ( len , arena ) ; if ( kwonlyargs == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> arg_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_arg ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"arguments<S2SV_blank>field<S2SV_blank>\\\\\"kwonlyargs\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( kwonlyargs , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"kwonlyargs\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arguments\" ) ; return 1 ; } <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_kw_defaults ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_kw_defaults ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"arguments<S2SV_blank>field<S2SV_blank>\\\\\"kw_defaults\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; kw_defaults = _Ta3_asdl_seq_new ( len , arena ) ; if ( kw_defaults == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"arguments<S2SV_blank>field<S2SV_blank>\\\\\"kw_defaults\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( kw_defaults , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"kw_defaults\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arguments\" ) ; return 1 ; } <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_kwarg ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_kwarg ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_arg ( tmp , & kwarg , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { kwarg = NULL ; } if ( _PyObject_HasAttrId ( obj , & PyId_defaults ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_defaults ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"arguments<S2SV_blank>field<S2SV_blank>\\\\\"defaults\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; defaults = _Ta3_asdl_seq_new ( len , arena ) ; if ( defaults == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"arguments<S2SV_blank>field<S2SV_blank>\\\\\"defaults\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( defaults , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"defaults\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arguments\" ) ; return 1 ; } <S2SV_StartBug> * out = arguments ( args , vararg , kwonlyargs , kw_defaults , kwarg , defaults , <S2SV_EndBug> arena ) ; return 0 ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_args , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arguments\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { arg_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_vararg , & tmp ) < 0 ) { <S2SV_ModEnd> return 1 ; <S2SV_ModStart> } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; vararg = NULL ; } else { int res ; res = obj2ast_arg ( tmp , & vararg , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_kwonlyargs , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"kwonlyargs\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arguments\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> Py_ssize_t len ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { arg_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_kw_defaults , & tmp ) < 0 ) { <S2SV_ModEnd> return 1 ; <S2SV_ModStart> } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"kw_defaults\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arguments\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_kwarg , & tmp ) < 0 ) { <S2SV_ModEnd> return 1 ; <S2SV_ModStart> } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; kwarg = NULL ; } else { int res ; res = obj2ast_arg ( tmp , & kwarg , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_defaults , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"defaults\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arguments\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> Py_ssize_t len ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } * out = arguments ( args , vararg , kwonlyargs , kw_defaults , kwarg , defaults , arena ) ; return 0 ; failed : Py_XDECREF ( tmp <S2SV_ModEnd> ) ; return <S2SV_ModStart> 1 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3156\n\n```\nCWE-399 static void __inet_del_ifa ( struct in_device * in_dev , struct in_ifaddr * * ifap , int destroy , struct nlmsghdr * nlh , u32 portid ) { struct in_ifaddr * promote = NULL ; struct in_ifaddr * ifa , * ifa1 = * ifap ; struct in_ifaddr * last_prim = in_dev -> ifa_list ; struct in_ifaddr * prev_prom = NULL ; int do_promote = IN_DEV_PROMOTE_SECONDARIES ( in_dev ) ; ASSERT_RTNL ( ) ; <S2SV_StartBug> if ( ! ( ifa1 -> ifa_flags & IFA_F_SECONDARY ) ) { <S2SV_EndBug> struct in_ifaddr * * ifap1 = & ifa1 -> ifa_next ; while ( ( ifa = * ifap1 ) != NULL ) { if ( ! ( ifa -> ifa_flags & IFA_F_SECONDARY ) && ifa1 -> ifa_scope <= ifa -> ifa_scope ) last_prim = ifa ; if ( ! ( ifa -> ifa_flags & IFA_F_SECONDARY ) || ifa1 -> ifa_mask != ifa -> ifa_mask || ! inet_ifa_match ( ifa1 -> ifa_address , ifa ) ) { ifap1 = & ifa -> ifa_next ; prev_prom = ifa ; continue ; } if ( ! do_promote ) { inet_hash_remove ( ifa ) ; * ifap1 = ifa -> ifa_next ; rtmsg_ifa ( RTM_DELADDR , ifa , nlh , portid ) ; blocking_notifier_call_chain ( & inetaddr_chain , NETDEV_DOWN , ifa ) ; inet_free_ifa ( ifa ) ; } else { promote = ifa ; break ; } } } for ( ifa = promote ; ifa ; ifa = ifa -> ifa_next ) { if ( ifa1 -> ifa_mask == ifa -> ifa_mask && inet_ifa_match ( ifa1 -> ifa_address , ifa ) ) fib_del_ifaddr ( ifa , ifa1 ) ; <S2SV_StartBug> } <S2SV_EndBug> * ifap = ifa1 -> ifa_next ; inet_hash_remove ( ifa1 ) ; rtmsg_ifa ( RTM_DELADDR , ifa1 , nlh , portid ) ; blocking_notifier_call_chain ( & inetaddr_chain , NETDEV_DOWN , ifa1 ) ; if ( promote ) { struct in_ifaddr * next_sec = promote -> ifa_next ; if ( prev_prom ) { prev_prom -> ifa_next = promote -> ifa_next ; promote -> ifa_next = last_prim -> ifa_next ; last_prim -> ifa_next = promote ; } promote -> ifa_flags &= ~ IFA_F_SECONDARY ; rtmsg_ifa ( RTM_NEWADDR , promote , nlh , portid ) ; blocking_notifier_call_chain ( & inetaddr_chain , NETDEV_UP , promote ) ; for ( ifa = next_sec ; ifa ; ifa = ifa -> ifa_next ) { if ( ifa1 -> ifa_mask != ifa -> ifa_mask || ! inet_ifa_match ( ifa1 -> ifa_address , ifa ) ) continue ; fib_add_ifaddr ( ifa ) ; } } if ( destroy ) inet_free_ifa ( ifa1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( in_dev -> dead ) goto no_promotions ; if ( <S2SV_ModStart> ) ; } no_promotions :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17805\n\n```\nCWE-20 static int encrypt ( struct blkcipher_desc * desc , struct scatterlist * dst , struct scatterlist * src , unsigned int nbytes ) { struct blkcipher_walk walk ; struct crypto_blkcipher * tfm = desc -> tfm ; struct salsa20_ctx * ctx = crypto_blkcipher_ctx ( tfm ) ; int err ; blkcipher_walk_init ( & walk , dst , src , nbytes ) ; err = blkcipher_walk_virt_block ( desc , & walk , 64 ) ; salsa20_ivsetup ( ctx , walk . iv ) ; <S2SV_StartBug> if ( likely ( walk . nbytes == nbytes ) ) <S2SV_EndBug> { salsa20_encrypt_bytes ( ctx , walk . src . virt . addr , walk . dst . virt . addr , nbytes ) ; return blkcipher_walk_done ( desc , & walk , 0 ) ; } while ( walk . nbytes >= 64 ) { salsa20_encrypt_bytes ( ctx , walk . src . virt . addr , walk . dst . virt . addr , walk . nbytes - ( walk . nbytes % 64 ) ) ; err = blkcipher_walk_done ( desc , & walk , walk . nbytes % 64 ) ; } if ( walk . nbytes ) { salsa20_encrypt_bytes ( ctx , walk . src . virt . addr , walk . dst . virt . addr , walk . nbytes ) ; err = blkcipher_walk_done ( desc , & walk , 0 ) ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iv ) ; <S2SV_ModEnd> while ( walk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 static struct dst_entry * inet6_csk_route_socket ( struct sock * sk , struct flowi6 * fl6 ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct in6_addr * final_p , final ; struct dst_entry * dst ; memset ( fl6 , 0 , sizeof ( * fl6 ) ) ; fl6 -> flowi6_proto = sk -> sk_protocol ; fl6 -> daddr = sk -> sk_v6_daddr ; fl6 -> saddr = np -> saddr ; fl6 -> flowlabel = np -> flow_label ; IP6_ECN_flow_xmit ( sk , fl6 -> flowlabel ) ; fl6 -> flowi6_oif = sk -> sk_bound_dev_if ; fl6 -> flowi6_mark = sk -> sk_mark ; fl6 -> fl6_sport = inet -> inet_sport ; fl6 -> fl6_dport = inet -> inet_dport ; security_sk_classify_flow ( sk , flowi6_to_flowi ( fl6 ) ) ; <S2SV_StartBug> final_p = fl6_update_dst ( fl6 , np -> opt , & final ) ; <S2SV_EndBug> <S2SV_StartBug> dst = __inet6_csk_dst_check ( sk , np -> dst_cookie ) ; <S2SV_EndBug> if ( ! dst ) { dst = ip6_dst_lookup_flow ( sk , fl6 , final_p ) ; if ( ! IS_ERR ( dst ) ) __inet6_csk_dst_store ( sk , dst , NULL , NULL ) ; } return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; rcu_read_lock ( ) ; <S2SV_ModStart> ( fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt ) <S2SV_ModStart> final ) ; rcu_read_unlock ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-120 MagickExport void * AcquireAlignedMemory ( const size_t count , const size_t quantum ) { # define AlignedExtent ( size , alignment ) ( ( ( size ) + ( ( alignment ) - 1 ) ) & ~ ( ( alignment ) - 1 ) ) size_t alignment , extent , size ; void * memory ; <S2SV_StartBug> if ( CheckMemoryOverflow ( count , quantum ) != MagickFalse ) <S2SV_EndBug> return ( ( void * ) NULL ) ; memory = NULL ; alignment = CACHE_LINE_SIZE ; size = count * quantum ; extent = AlignedExtent ( size , alignment ) ; if ( ( size == 0 ) || ( alignment < sizeof ( void * ) ) || ( extent < size ) ) return ( ( void * ) NULL ) ; # if defined ( MAGICKCORE_HAVE_POSIX_MEMALIGN ) if ( posix_memalign ( & memory , alignment , extent ) != 0 ) memory = NULL ; # elif defined ( MAGICKCORE_HAVE__ALIGNED_MALLOC ) memory = _aligned_malloc ( extent , alignment ) ; # else { void * p ; extent = ( size + alignment - 1 ) + sizeof ( void * ) ; if ( extent > size ) { p = malloc ( extent ) ; if ( p != NULL ) { memory = ( void * ) AlignedExtent ( ( size_t ) p + sizeof ( void * ) , alignment ) ; * ( ( void * * ) memory - 1 ) = p ; } } } # endif return ( memory ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( HeapOverflowSanityCheck <S2SV_ModEnd> ( count ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7515\n\n```\nCWE-125 static Image * ReadRLEImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define SkipLinesOp 0x01 # define SetColorOp 0x02 # define SkipPixelsOp 0x03 # define ByteDataOp 0x05 # define RunDataOp 0x06 # define EOFOp 0x07 char magick [ 12 ] ; Image * image ; int opcode , operand , status ; MagickStatusType flags ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; Quantum index ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bits_per_pixel , map_length , number_colormaps , <S2SV_StartBug> number_planes , <S2SV_EndBug> one , offset , pixel_info_length ; ssize_t count , y ; unsigned char background_color [ 256 ] , * colormap , pixel , plane , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 2 ) || ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { image -> page . x = ReadBlobLSBShort ( image ) ; image -> page . y = ReadBlobLSBShort ( image ) ; image -> columns = ReadBlobLSBShort ( image ) ; image -> rows = ReadBlobLSBShort ( image ) ; flags = ( MagickStatusType ) ReadBlobByte ( image ) ; image -> alpha_trait = flags & 0x04 ? BlendPixelTrait : UndefinedPixelTrait ; number_planes = ( size_t ) ReadBlobByte ( image ) ; bits_per_pixel = ( size_t ) ReadBlobByte ( image ) ; number_colormaps = ( size_t ) ReadBlobByte ( image ) ; map_length = ( unsigned char ) ReadBlobByte ( image ) ; if ( map_length >= 64 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; one = 1 ; map_length = one << map_length ; if ( ( number_planes == 0 ) || ( number_planes == 2 ) || ( bits_per_pixel != 8 ) || ( image -> columns == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( flags & 0x02 ) { for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) background_color [ i ] = 0 ; ( void ) ReadBlobByte ( image ) ; } else { p = background_color ; for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) * p ++ = ( unsigned char ) ReadBlobByte ( image ) ; } if ( ( number_planes & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } colormap = ( unsigned char * ) NULL ; if ( number_colormaps != 0 ) { colormap = ( unsigned char * ) AcquireQuantumMemory ( number_colormaps , 3 * map_length * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; for ( i = 0 ; i < ( ssize_t ) number_colormaps ; i ++ ) for ( x = 0 ; x < ( ssize_t ) map_length ; x ++ ) * p ++ = ( unsigned char ) ScaleShortToQuantum ( ReadBlobLSBShort ( image ) ) ; } if ( ( flags & 0x08 ) != 0 ) { char * comment ; size_t length ; length = ReadBlobLSBShort ( image ) ; if ( length != 0 ) { comment = ( char * ) AcquireQuantumMemory ( length , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , length - 1 , ( unsigned char * ) comment ) ; comment [ length - 1 ] = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; if ( ( length & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; } } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) number_planes ++ ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; <S2SV_StartBug> if ( ( number_pixels * number_planes ) != ( size_t ) ( number_pixels * number_planes ) ) <S2SV_EndBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> pixel_info_length = image -> columns * image -> rows * MagickMax ( number_planes , 4 ) ; <S2SV_EndBug> pixel_info = AcquireVirtualMemory ( pixel_info_length , sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( flags & 0x01 ) && ! ( flags & 0x02 ) ) { ssize_t j ; p = pixels ; for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { if ( image -> alpha_trait == UndefinedPixelTrait ) for ( j = 0 ; j < ( ssize_t ) number_planes ; j ++ ) * p ++ = background_color [ j ] ; else { for ( j = 0 ; j < ( ssize_t ) ( number_planes - 1 ) ; j ++ ) * p ++ = background_color [ j ] ; * p ++ = 0 ; } } } plane = 0 ; x = 0 ; y = 0 ; opcode = ReadBlobByte ( image ) ; do { switch ( opcode & 0x3f ) { case SkipLinesOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ( int ) ReadBlobLSBShort ( image ) ; x = 0 ; y += operand ; break ; } case SetColorOp : { operand = ReadBlobByte ( image ) ; plane = ( unsigned char ) operand ; if ( plane == 255 ) plane = ( unsigned char ) ( number_planes - 1 ) ; x = 0 ; break ; } case SkipPixelsOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ( int ) ReadBlobLSBShort ( image ) ; x += operand ; break ; } case ByteDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ( int ) ReadBlobLSBShort ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } if ( operand & 0x01 ) ( void ) ReadBlobByte ( image ) ; x += operand ; break ; } case RunDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ( int ) ReadBlobLSBShort ( image ) ; pixel = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) ReadBlobByte ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } x += operand ; break ; } default : break ; } opcode = ReadBlobByte ( image ) ; } while ( ( ( opcode & 0x3f ) != EOFOp ) && ( opcode != EOF ) ) ; if ( number_colormaps != 0 ) { MagickStatusType mask ; mask = ( MagickStatusType ) ( map_length - 1 ) ; p = pixels ; x = ( ssize_t ) number_planes ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { if ( IsValidColormapIndex ( image , * p & mask , & index , exception ) == MagickFalse ) break ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } else if ( ( number_planes >= 3 ) && ( number_colormaps >= 3 ) ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) for ( x = 0 ; x < ( ssize_t ) number_planes ; x ++ ) { if ( IsValidColormapIndex ( image , ( size_t ) ( x * map_length + ( * p & mask ) ) , & index , exception ) == MagickFalse ) break ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } if ( ( i < ( ssize_t ) number_pixels ) || ( x < ( ssize_t ) number_planes ) ) { colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } } if ( number_planes >= 3 ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( number_colormaps == 0 ) map_length = 256 ; if ( AcquireImageColormap ( image , map_length , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; } else if ( number_colormaps > 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * ( p + map_length ) ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * ( p + map_length * 2 ) ) ; p ++ ; } p = pixels ; if ( image -> alpha_trait == UndefinedPixelTrait ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } else { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( IsValidColormapIndex ( image , ( ssize_t ) * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . red ) , q ) ; if ( IsValidColormapIndex ( image , ( ssize_t ) * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . green ) , q ) ; if ( IsValidColormapIndex ( image , ( ssize_t ) * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . blue ) , q ) ; SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } image -> colormap = ( PixelInfo * ) RelinquishMagickMemory ( image -> colormap ) ; image -> storage_class = DirectClass ; image -> colors = 0 ; } } if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; ( void ) ReadBlobByte ( image ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> number_colormaps , number_planes , number_planes_filled <S2SV_ModStart> -> rows ; number_planes_filled = ( number_planes % 2 == 0 ) ? number_planes : number_planes + 1 ; <S2SV_ModStart> ( number_pixels * number_planes_filled <S2SV_ModEnd> ) != ( <S2SV_ModStart> ( number_pixels * number_planes_filled <S2SV_ModEnd> ) ) ThrowReaderException <S2SV_ModStart> -> rows * number_planes_filled <S2SV_ModEnd> ; pixel_info =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 struct dst_entry * inet6_csk_route_req ( const struct sock * sk , struct flowi6 * fl6 , const struct request_sock * req , u8 proto ) { struct inet_request_sock * ireq = inet_rsk ( req ) ; const struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct in6_addr * final_p , final ; struct dst_entry * dst ; memset ( fl6 , 0 , sizeof ( * fl6 ) ) ; fl6 -> flowi6_proto = proto ; fl6 -> daddr = ireq -> ir_v6_rmt_addr ; <S2SV_StartBug> final_p = fl6_update_dst ( fl6 , np -> opt , & final ) ; <S2SV_EndBug> <S2SV_StartBug> fl6 -> saddr = ireq -> ir_v6_loc_addr ; <S2SV_EndBug> fl6 -> flowi6_oif = ireq -> ir_iif ; fl6 -> flowi6_mark = ireq -> ir_mark ; fl6 -> fl6_dport = ireq -> ir_rmt_port ; fl6 -> fl6_sport = htons ( ireq -> ir_num ) ; security_req_classify_flow ( req , flowi6_to_flowi ( fl6 ) ) ; dst = ip6_dst_lookup_flow ( sk , fl6 , final_p ) ; if ( IS_ERR ( dst ) ) return NULL ; return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ir_v6_rmt_addr ; rcu_read_lock ( ) ; <S2SV_ModStart> ( fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt ) <S2SV_ModStart> final ) ; rcu_read_unlock ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18445\n\n```\nCWE-125 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; <S2SV_StartBug> u64 insn_bitness = ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) ? 64 : 32 ; <S2SV_EndBug> smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; if ( ( src_known && ( smin_val != smax_val || umin_val != umax_val ) ) || smin_val > smax_val || umin_val > umax_val ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } if ( ! src_known && opcode != BPF_ADD && opcode != BPF_SUB && opcode != BPF_AND ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } switch ( opcode ) { case BPF_ADD : if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_ARSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value >>= umin_val ; dst_reg -> smax_value >>= umin_val ; dst_reg -> var_off = tnum_arshift ( dst_reg -> var_off , umin_val ) ; dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { coerce_reg_to_size ( dst_reg , 4 ) ; <S2SV_StartBug> coerce_reg_to_size ( & src_reg , 4 ) ; <S2SV_EndBug> } __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : 32 ; if ( insn_bitness == 32 ) { coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size ( & src_reg , 4 ) ; } <S2SV_ModStart> 4 ) ; <S2SV_ModEnd> } __reg_deduce_bounds (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 dfa * Ta3Grammar_FindDFA ( grammar * g , int type ) { dfa * d ; # if 1 d = & g -> g_dfa [ type - NT_OFFSET ] ; assert ( d -> d_type == type ) ; return d ; # else int i ; for ( i = g -> g_ndfas , d = g -> g_dfa ; -- i >= 0 ; d ++ ) { if ( d -> d_type == type ) return d ; } <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> d ; } abort ( <S2SV_ModEnd> ) ; #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11142\n\n```\nCWE-400 static zend_bool add_post_var ( zval * arr , post_var_data_t * var , zend_bool eof TSRMLS_DC ) { <S2SV_StartBug> char * ksep , * vsep , * val ; <S2SV_EndBug> size_t klen , vlen ; unsigned int new_vlen ; if ( var -> ptr >= var -> end ) { return 0 ; } <S2SV_StartBug> vsep = memchr ( var -> ptr , '&' , var -> end - var -> ptr ) ; <S2SV_EndBug> if ( ! vsep ) { <S2SV_StartBug> if ( ! eof ) { <S2SV_EndBug> return 0 ; } else { vsep = var -> end ; } } ksep = memchr ( var -> ptr , '=' , vsep - var -> ptr ) ; if ( ksep ) { * ksep = '\\\\0' ; klen = ksep - var -> ptr ; vlen = vsep - ++ ksep ; } else { ksep = \"\" ; klen = vsep - var -> ptr ; vlen = 0 ; } php_url_decode ( var -> ptr , klen ) ; val = estrndup ( ksep , vlen ) ; if ( vlen ) { vlen = php_url_decode ( val , vlen ) ; } if ( sapi_module . input_filter ( PARSE_POST , var -> ptr , & val , vlen , & new_vlen TSRMLS_CC ) ) { php_register_variable_safe ( var -> ptr , val , new_vlen , arr TSRMLS_CC ) ; } efree ( val ) ; var -> ptr = vsep + ( vsep != var -> end ) ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { char * start , * <S2SV_ModStart> 0 ; } start = var -> ptr + var -> already_scanned ; <S2SV_ModStart> = memchr ( start <S2SV_ModEnd> , '&' , <S2SV_ModStart> -> end - start <S2SV_ModEnd> ) ; if <S2SV_ModStart> eof ) { var -> already_scanned = var -> end - var -> ptr ; <S2SV_ModStart> end ) ; var -> already_scanned = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2161\n\n```\nCWE-399 static int ape_read_header ( AVFormatContext * s , AVFormatParameters * ap ) { AVIOContext * pb = s -> pb ; APEContext * ape = s -> priv_data ; AVStream * st ; uint32_t tag ; int i ; int total_blocks ; int64_t pts ; ape -> junklength = 0 ; tag = avio_rl32 ( pb ) ; if ( tag != MKTAG ( 'M' , 'A' , 'C' , '<S2SV_blank>' ) ) return - 1 ; ape -> fileversion = avio_rl16 ( pb ) ; if ( ape -> fileversion < APE_MIN_VERSION || ape -> fileversion > APE_MAX_VERSION ) { av_log ( s , AV_LOG_ERROR , \"Unsupported<S2SV_blank>file<S2SV_blank>version<S2SV_blank>-<S2SV_blank>%d.%02d\\\\n\" , ape -> fileversion / 1000 , ( ape -> fileversion % 1000 ) / 10 ) ; return - 1 ; } if ( ape -> fileversion >= 3980 ) { ape -> padding1 = avio_rl16 ( pb ) ; ape -> descriptorlength = avio_rl32 ( pb ) ; ape -> headerlength = avio_rl32 ( pb ) ; ape -> seektablelength = avio_rl32 ( pb ) ; ape -> wavheaderlength = avio_rl32 ( pb ) ; ape -> audiodatalength = avio_rl32 ( pb ) ; ape -> audiodatalength_high = avio_rl32 ( pb ) ; ape -> wavtaillength = avio_rl32 ( pb ) ; avio_read ( pb , ape -> md5 , 16 ) ; if ( ape -> descriptorlength > 52 ) avio_seek ( pb , ape -> descriptorlength - 52 , SEEK_CUR ) ; ape -> compressiontype = avio_rl16 ( pb ) ; ape -> formatflags = avio_rl16 ( pb ) ; ape -> blocksperframe = avio_rl32 ( pb ) ; ape -> finalframeblocks = avio_rl32 ( pb ) ; ape -> totalframes = avio_rl32 ( pb ) ; ape -> bps = avio_rl16 ( pb ) ; ape -> channels = avio_rl16 ( pb ) ; ape -> samplerate = avio_rl32 ( pb ) ; } else { ape -> descriptorlength = 0 ; ape -> headerlength = 32 ; ape -> compressiontype = avio_rl16 ( pb ) ; ape -> formatflags = avio_rl16 ( pb ) ; ape -> channels = avio_rl16 ( pb ) ; ape -> samplerate = avio_rl32 ( pb ) ; ape -> wavheaderlength = avio_rl32 ( pb ) ; ape -> wavtaillength = avio_rl32 ( pb ) ; ape -> totalframes = avio_rl32 ( pb ) ; ape -> finalframeblocks = avio_rl32 ( pb ) ; if ( ape -> formatflags & MAC_FORMAT_FLAG_HAS_PEAK_LEVEL ) { avio_seek ( pb , 4 , SEEK_CUR ) ; ape -> headerlength += 4 ; } if ( ape -> formatflags & MAC_FORMAT_FLAG_HAS_SEEK_ELEMENTS ) { ape -> seektablelength = avio_rl32 ( pb ) ; ape -> headerlength += 4 ; ape -> seektablelength *= sizeof ( int32_t ) ; } else ape -> seektablelength = ape -> totalframes * sizeof ( int32_t ) ; if ( ape -> formatflags & MAC_FORMAT_FLAG_8_BIT ) ape -> bps = 8 ; else if ( ape -> formatflags & MAC_FORMAT_FLAG_24_BIT ) ape -> bps = 24 ; else ape -> bps = 16 ; if ( ape -> fileversion >= 3950 ) ape -> blocksperframe = 73728 * 4 ; else if ( ape -> fileversion >= 3900 || ( ape -> fileversion >= 3800 && ape -> compressiontype >= 4000 ) ) ape -> blocksperframe = 73728 ; else ape -> blocksperframe = 9216 ; if ( ! ( ape -> formatflags & MAC_FORMAT_FLAG_CREATE_WAV_HEADER ) ) avio_seek ( pb , ape -> wavheaderlength , SEEK_CUR ) ; } <S2SV_StartBug> if ( ape -> totalframes > UINT_MAX / sizeof ( APEFrame ) ) { <S2SV_EndBug> av_log ( s , AV_LOG_ERROR , \"Too<S2SV_blank>many<S2SV_blank>frames:<S2SV_blank>%d\\\\n\" , ape -> totalframes ) ; return - 1 ; } ape -> frames = av_malloc ( ape -> totalframes * sizeof ( APEFrame ) ) ; if ( ! ape -> frames ) return AVERROR ( ENOMEM ) ; ape -> firstframe = ape -> junklength + ape -> descriptorlength + ape -> headerlength + ape -> seektablelength + ape -> wavheaderlength ; ape -> currentframe = 0 ; ape -> totalsamples = ape -> finalframeblocks ; if ( ape -> totalframes > 1 ) ape -> totalsamples += ape -> blocksperframe * ( ape -> totalframes - 1 ) ; if ( ape -> seektablelength > 0 ) { ape -> seektable = av_malloc ( ape -> seektablelength ) ; for ( i = 0 ; i < ape -> seektablelength / sizeof ( uint32_t ) ; i ++ ) ape -> seektable [ i ] = avio_rl32 ( pb ) ; } ape -> frames [ 0 ] . pos = ape -> firstframe ; ape -> frames [ 0 ] . nblocks = ape -> blocksperframe ; ape -> frames [ 0 ] . skip = 0 ; for ( i = 1 ; i < ape -> totalframes ; i ++ ) { ape -> frames [ i ] . pos = ape -> seektable [ i ] ; ape -> frames [ i ] . nblocks = ape -> blocksperframe ; ape -> frames [ i - 1 ] . size = ape -> frames [ i ] . pos - ape -> frames [ i - 1 ] . pos ; ape -> frames [ i ] . skip = ( ape -> frames [ i ] . pos - ape -> frames [ 0 ] . pos ) & 3 ; } ape -> frames [ ape -> totalframes - 1 ] . size = ape -> finalframeblocks * 4 ; ape -> frames [ ape -> totalframes - 1 ] . nblocks = ape -> finalframeblocks ; for ( i = 0 ; i < ape -> totalframes ; i ++ ) { if ( ape -> frames [ i ] . skip ) { ape -> frames [ i ] . pos -= ape -> frames [ i ] . skip ; ape -> frames [ i ] . size += ape -> frames [ i ] . skip ; } ape -> frames [ i ] . size = ( ape -> frames [ i ] . size + 3 ) & ~ 3 ; } ape_dumpinfo ( s , ape ) ; if ( ! url_is_streamed ( pb ) ) { ff_ape_parse_tag ( s ) ; avio_seek ( pb , 0 , SEEK_SET ) ; } av_log ( s , AV_LOG_DEBUG , \"Decoding<S2SV_blank>file<S2SV_blank>-<S2SV_blank>v%d.%02d,<S2SV_blank>compression<S2SV_blank>level<S2SV_blank>%d\\\\n\" , ape -> fileversion / 1000 , ( ape -> fileversion % 1000 ) / 10 , ape -> compressiontype ) ; st = av_new_stream ( s , 0 ) ; if ( ! st ) return - 1 ; total_blocks = ( ape -> totalframes == 0 ) ? 0 : ( ( ape -> totalframes - 1 ) * ape -> blocksperframe ) + ape -> finalframeblocks ; st -> codec -> codec_type = AVMEDIA_TYPE_AUDIO ; st -> codec -> codec_id = CODEC_ID_APE ; st -> codec -> codec_tag = MKTAG ( 'A' , 'P' , 'E' , '<S2SV_blank>' ) ; st -> codec -> channels = ape -> channels ; st -> codec -> sample_rate = ape -> samplerate ; st -> codec -> bits_per_coded_sample = ape -> bps ; st -> codec -> frame_size = MAC_SUBFRAME_SIZE ; st -> nb_frames = ape -> totalframes ; st -> start_time = 0 ; st -> duration = total_blocks / MAC_SUBFRAME_SIZE ; av_set_pts_info ( st , 64 , MAC_SUBFRAME_SIZE , ape -> samplerate ) ; st -> codec -> extradata = av_malloc ( APE_EXTRADATA_SIZE ) ; st -> codec -> extradata_size = APE_EXTRADATA_SIZE ; AV_WL16 ( st -> codec -> extradata + 0 , ape -> fileversion ) ; AV_WL16 ( st -> codec -> extradata + 2 , ape -> compressiontype ) ; AV_WL16 ( st -> codec -> extradata + 4 , ape -> formatflags ) ; pts = 0 ; for ( i = 0 ; i < ape -> totalframes ; i ++ ) { ape -> frames [ i ] . pts = pts ; av_add_index_entry ( st , ape -> frames [ i ] . pos , ape -> frames [ i ] . pts , 0 , 0 , AVINDEX_KEYFRAME ) ; pts += ape -> blocksperframe / MAC_SUBFRAME_SIZE ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ! ape -> totalframes ) { av_log ( s , AV_LOG_ERROR , \"No<S2SV_blank>frames<S2SV_blank>in<S2SV_blank>the<S2SV_blank>file!\\\\n\" ) ; return AVERROR ( EINVAL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4604\n\n```\nCWE-119 static ssize_t bat_socket_read ( struct file * file , char __user * buf , size_t count , loff_t * ppos ) { struct socket_client * socket_client = file -> private_data ; struct socket_packet * socket_packet ; size_t packet_len ; int error ; if ( ( file -> f_flags & O_NONBLOCK ) && ( socket_client -> queue_len == 0 ) ) return - EAGAIN ; if ( ( ! buf ) || ( count < sizeof ( struct icmp_packet ) ) ) return - EINVAL ; if ( ! access_ok ( VERIFY_WRITE , buf , count ) ) return - EFAULT ; error = wait_event_interruptible ( socket_client -> queue_wait , socket_client -> queue_len ) ; if ( error ) return error ; spin_lock_bh ( & socket_client -> lock ) ; socket_packet = list_first_entry ( & socket_client -> queue_list , struct socket_packet , list ) ; list_del ( & socket_packet -> list ) ; socket_client -> queue_len -- ; spin_unlock_bh ( & socket_client -> lock ) ; <S2SV_StartBug> error = copy_to_user ( buf , & socket_packet -> icmp_packet , <S2SV_EndBug> <S2SV_StartBug> socket_packet -> icmp_len ) ; <S2SV_EndBug> packet_len = socket_packet -> icmp_len ; kfree ( socket_packet ) ; if ( error ) return - EFAULT ; return packet_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lock ) ; packet_len = min ( count , socket_packet -> icmp_len ) ; <S2SV_ModStart> -> icmp_packet , packet_len ) <S2SV_ModEnd> ; kfree (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2549\n\n```\nCWE-20 static int snd_hrtimer_stop ( struct snd_timer * t ) { struct snd_hrtimer * stime = t -> private_data ; atomic_set ( & stime -> running , 0 ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; hrtimer_try_to_cancel ( & stime -> hrt ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void update_state_rt ( VP9_COMP * cpi , PICK_MODE_CONTEXT * ctx , <S2SV_EndBug> int mi_row , int mi_col , int bsize ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> const struct segmentation * const seg = & cm -> seg ; <S2SV_StartBug> * ( xd -> mi [ 0 ] ) = ctx -> mic ; <S2SV_EndBug> <S2SV_StartBug> if ( ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) && seg -> enabled ) { <S2SV_EndBug> <S2SV_StartBug> vp9_cyclic_refresh_update_segment ( cpi , & xd -> mi [ 0 ] -> mbmi , <S2SV_EndBug> <S2SV_StartBug> mi_row , mi_col , bsize , 1 ) ; <S2SV_EndBug> vp9_init_plane_quantizers ( cpi , x ) ; } if ( is_inter_block ( mbmi ) ) { <S2SV_StartBug> vp9_update_mv_count ( cm , xd ) ; <S2SV_EndBug> if ( cm -> interp_filter == SWITCHABLE ) { const int pred_ctx = vp9_get_pred_context_switchable_interp ( xd ) ; <S2SV_StartBug> ++ cm -> counts . switchable_interp [ pred_ctx ] [ mbmi -> interp_filter ] ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug> x -> skip = ctx -> skip ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> -> e_mbd ; MODE_INFO * const mi = xd -> mi [ 0 ] ; <S2SV_ModStart> -> seg ; const int bw = num_8x8_blocks_wide_lookup [ mi -> mbmi . sb_type ] ; const int bh = num_8x8_blocks_high_lookup [ mi -> mbmi . sb_type ] ; const int x_mis = MIN ( bw , cm -> mi_cols - mi_col ) ; const int y_mis = MIN ( bh , cm -> mi_rows - mi_row ) ; <S2SV_ModStart> -> mic ; * ( x -> mbmi_ext ) = ctx -> mbmi_ext ; if ( seg -> enabled && cpi -> oxcf . aq_mode ) { if <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> . aq_mode == COMPLEXITY_AQ || cpi -> oxcf . aq_mode == VARIANCE_AQ ) { const uint8_t * const map = seg -> update_map ? cpi -> segmentation_map : cm -> last_frame_seg_map ; mbmi -> segment_id = get_segment_id ( cm , map , bsize , mi_row , mi_col ) ; } else <S2SV_ModEnd> { vp9_cyclic_refresh_update_segment ( <S2SV_ModStart> ( cpi , mbmi , <S2SV_ModEnd> mi_row , mi_col <S2SV_ModStart> , bsize , ctx -> rate , ctx -> dist , x -> skip ) ; } <S2SV_ModEnd> vp9_init_plane_quantizers ( cpi <S2SV_ModStart> { vp9_update_mv_count ( td <S2SV_ModEnd> ) ; if <S2SV_ModStart> ) ; ++ td -> counts -> <S2SV_ModEnd> switchable_interp [ pred_ctx <S2SV_ModStart> ] ; } if ( mbmi -> sb_type < BLOCK_8X8 ) { mbmi -> mv [ 0 ] . as_int = mi -> bmi [ 3 ] . as_mv [ 0 ] . as_int ; mbmi -> mv [ 1 ] . as_int = mi -> bmi [ 3 ] . as_mv [ 1 ] . as_int ; } } if ( cm -> use_prev_frame_mvs ) { MV_REF * const frame_mvs = cm -> cur_frame -> mvs + mi_row * cm -> mi_cols + mi_col ; int w , h ; for ( h = 0 ; h < y_mis ; ++ h ) { MV_REF * const frame_mv = frame_mvs + h * cm -> mi_cols ; for ( w = 0 ; w < x_mis ; ++ w ) { MV_REF * const mv = frame_mv + w ; mv -> ref_frame [ 0 ] = mi -> mbmi . ref_frame [ 0 ] ; mv -> ref_frame [ 1 ] = mi -> mbmi . ref_frame [ 1 ] ; mv -> mv [ 0 ] . as_int = mi -> mbmi . mv [ 0 ] . as_int ; mv -> mv [ 1 ] . as_int = mi -> mbmi . mv [ 1 ] . as_int ; } } <S2SV_ModStart> -> skip ; x -> skip_txfm [ 0 ] = mbmi -> segment_id ? 0 : ctx -> skip_txfm [ 0 ] ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfssvc_decode_readargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd_readargs * args ) { unsigned int len ; int v ; p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; args -> offset = ntohl ( * p ++ ) ; len = args -> count = ntohl ( * p ++ ) ; <S2SV_StartBug> p ++ ; <S2SV_EndBug> len = min_t ( unsigned int , len , NFSSVC_MAXBLKSIZE_V2 ) ; v = 0 ; while ( len > 0 ) { struct page * p = * ( rqstp -> rq_next_page ++ ) ; rqstp -> rq_vec [ v ] . iov_base = page_address ( p ) ; rqstp -> rq_vec [ v ] . iov_len = min_t ( unsigned int , len , PAGE_SIZE ) ; len -= rqstp -> rq_vec [ v ] . iov_len ; v ++ ; } args -> vlen = v ; <S2SV_StartBug> return xdr_argsize_check ( rqstp , p ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; p ++ ; if ( ! xdr_argsize_check ( rqstp , p ) ) return 0 <S2SV_ModStart> v ; return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9949\n\n```\nCWE-787 static int grub_ext2_iterate_dir ( grub_fshelp_node_t dir , int ( * hook ) ( const char * filename , enum grub_fshelp_filetype filetype , grub_fshelp_node_t node , void * closure ) , void * closure ) { unsigned int fpos = 0 ; struct grub_fshelp_node * diro = ( struct grub_fshelp_node * ) dir ; if ( ! diro -> inode_read ) { grub_ext2_read_inode ( diro -> data , diro -> ino , & diro -> inode ) ; if ( grub_errno ) return 0 ; } if ( hook ) while ( fpos < grub_le_to_cpu32 ( diro -> inode . size ) ) { struct ext2_dirent dirent ; grub_ext2_read_file ( diro , NULL , NULL , 0 , fpos , sizeof ( dirent ) , ( char * ) & dirent ) ; if ( grub_errno ) return 0 ; if ( dirent . direntlen == 0 ) return 0 ; if ( dirent . namelen != 0 ) { <S2SV_StartBug> # ifndef _MSC_VER <S2SV_EndBug> <S2SV_StartBug> char filename [ dirent . namelen + 1 ] ; <S2SV_EndBug> # else char * filename = grub_malloc ( dirent . namelen + 1 ) ; # endif struct grub_fshelp_node * fdiro ; <S2SV_StartBug> enum grub_fshelp_filetype type = GRUB_FSHELP_UNKNOWN ; <S2SV_EndBug> grub_ext2_read_file ( diro , 0 , 0 , 0 , fpos + sizeof ( struct ext2_dirent ) , dirent . namelen , filename ) ; if ( grub_errno ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> fdiro = grub_malloc ( sizeof ( struct grub_fshelp_node ) ) ; if ( ! fdiro ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> fdiro -> data = diro -> data ; fdiro -> ino = grub_le_to_cpu32 ( dirent . inode ) ; filename [ dirent . namelen ] = '\\\\0' ; if ( dirent . filetype != FILETYPE_UNKNOWN ) { fdiro -> inode_read = 0 ; if ( dirent . filetype == FILETYPE_DIRECTORY ) type = GRUB_FSHELP_DIR ; else if ( dirent . filetype == FILETYPE_SYMLINK ) type = GRUB_FSHELP_SYMLINK ; else if ( dirent . filetype == FILETYPE_REG ) type = GRUB_FSHELP_REG ; } else { grub_ext2_read_inode ( diro -> data , grub_le_to_cpu32 ( dirent . inode ) , & fdiro -> inode ) ; if ( grub_errno ) <S2SV_StartBug> { <S2SV_EndBug> grub_free ( fdiro ) ; return 0 ; } fdiro -> inode_read = 1 ; if ( ( grub_le_to_cpu16 ( fdiro -> inode . mode ) & FILETYPE_INO_MASK ) == FILETYPE_INO_DIRECTORY ) type = GRUB_FSHELP_DIR ; else if ( ( grub_le_to_cpu16 ( fdiro -> inode . mode ) & FILETYPE_INO_MASK ) == FILETYPE_INO_SYMLINK ) type = GRUB_FSHELP_SYMLINK ; else if ( ( grub_le_to_cpu16 ( fdiro -> inode . mode ) & FILETYPE_INO_MASK ) == FILETYPE_INO_REG ) type = GRUB_FSHELP_REG ; } <S2SV_StartBug> if ( hook ( filename , type , fdiro , closure ) ) <S2SV_EndBug> return 1 ; } fpos += grub_le_to_cpu16 ( dirent . direntlen ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { char * filename = grub_malloc ( <S2SV_ModEnd> dirent . namelen <S2SV_ModStart> namelen + 1 ) ; <S2SV_ModEnd> struct grub_fshelp_node * <S2SV_ModStart> = GRUB_FSHELP_UNKNOWN ; if ( ! filename ) { break ; } <S2SV_ModStart> ( grub_errno ) { free ( filename ) ; return 0 ; } <S2SV_ModEnd> fdiro = grub_malloc <S2SV_ModStart> ! fdiro ) { free ( filename ) ; return 0 ; } <S2SV_ModEnd> fdiro -> data <S2SV_ModStart> ( grub_errno ) { free ( filename ) ; <S2SV_ModEnd> grub_free ( fdiro <S2SV_ModStart> closure ) ) { free ( filename ) ; return 1 ; } free ( filename ) <S2SV_ModEnd> ; } fpos\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-704(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12453\n\n```\nCWE-704 void xgroupCommand ( client * c ) { const char * help [ ] = { \"CREATE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><key><S2SV_blank><groupname><S2SV_blank><id<S2SV_blank>or<S2SV_blank>$><S2SV_blank><S2SV_blank>--<S2SV_blank>Create<S2SV_blank>a<S2SV_blank>new<S2SV_blank>consumer<S2SV_blank>group.\" , \"SETID<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><key><S2SV_blank><groupname><S2SV_blank><id<S2SV_blank>or<S2SV_blank>$><S2SV_blank><S2SV_blank>--<S2SV_blank>Set<S2SV_blank>the<S2SV_blank>current<S2SV_blank>group<S2SV_blank>ID.\" , \"DELGROUP<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><key><S2SV_blank><groupname><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--<S2SV_blank>Remove<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>group.\" , \"DELCONSUMER<S2SV_blank><key><S2SV_blank><groupname><S2SV_blank><consumer><S2SV_blank>--<S2SV_blank>Remove<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>conusmer.\" , \"HELP<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--<S2SV_blank>Prints<S2SV_blank>this<S2SV_blank>help.\" , NULL } ; stream * s = NULL ; sds grpname = NULL ; streamCG * cg = NULL ; char * opt = c -> argv [ 1 ] -> ptr ; if ( c -> argc >= 4 ) { robj * o = lookupKeyWriteOrReply ( c , c -> argv [ 2 ] , shared . nokeyerr ) ; <S2SV_StartBug> if ( o == NULL ) return ; <S2SV_EndBug> s = o -> ptr ; grpname = c -> argv [ 3 ] -> ptr ; if ( ( cg = streamLookupCG ( s , grpname ) ) == NULL && ( ! strcasecmp ( opt , \"SETID\" ) || ! strcasecmp ( opt , \"DELCONSUMER\" ) ) ) { addReplyErrorFormat ( c , \"-NOGROUP<S2SV_blank>No<S2SV_blank>such<S2SV_blank>consumer<S2SV_blank>group<S2SV_blank>\\'%s\\'<S2SV_blank>\" \"for<S2SV_blank>key<S2SV_blank>name<S2SV_blank>\\'%s\\'\" , ( char * ) grpname , ( char * ) c -> argv [ 2 ] -> ptr ) ; return ; } } if ( ! strcasecmp ( opt , \"CREATE\" ) && c -> argc == 5 ) { streamID id ; if ( ! strcmp ( c -> argv [ 4 ] -> ptr , \"$\" ) ) { id = s -> last_id ; } else if ( streamParseIDOrReply ( c , c -> argv [ 4 ] , & id , 0 ) != C_OK ) { return ; } streamCG * cg = streamCreateCG ( s , grpname , sdslen ( grpname ) , & id ) ; if ( cg ) { addReply ( c , shared . ok ) ; server . dirty ++ ; } else { addReplySds ( c , sdsnew ( \"-BUSYGROUP<S2SV_blank>Consumer<S2SV_blank>Group<S2SV_blank>name<S2SV_blank>already<S2SV_blank>exists\\\\r\\\\n\" ) ) ; } } else if ( ! strcasecmp ( opt , \"SETID\" ) && c -> argc == 5 ) { streamID id ; if ( ! strcmp ( c -> argv [ 4 ] -> ptr , \"$\" ) ) { id = s -> last_id ; } else if ( streamParseIDOrReply ( c , c -> argv [ 4 ] , & id , 0 ) != C_OK ) { return ; } cg -> last_id = id ; addReply ( c , shared . ok ) ; } else if ( ! strcasecmp ( opt , \"DESTROY\" ) && c -> argc == 4 ) { if ( cg ) { raxRemove ( s -> cgroups , ( unsigned char * ) grpname , sdslen ( grpname ) , NULL ) ; streamFreeCG ( cg ) ; addReply ( c , shared . cone ) ; } else { addReply ( c , shared . czero ) ; } } else if ( ! strcasecmp ( opt , \"DELCONSUMER\" ) && c -> argc == 5 ) { long long pending = streamDelConsumer ( cg , c -> argv [ 4 ] -> ptr ) ; addReplyLongLong ( c , pending ) ; server . dirty ++ ; } else if ( ! strcasecmp ( opt , \"HELP\" ) ) { addReplyHelp ( c , help ) ; } else { addReply ( c , shared . syntaxerr ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o == NULL || checkType ( c , o , OBJ_STREAM )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4998\n\n```\nCWE-119 static int check_entry_size_and_hooks ( struct ip6t_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ip6t_entry ) != 0 || <S2SV_StartBug> ( unsigned char * ) e + sizeof ( struct ip6t_entry ) >= limit ) { <S2SV_EndBug> duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ip6t_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip6t_entry ) >= limit || ( unsigned char * ) e + e -> next_offset >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2220\n\n```\nCWE-119 int <S2SV_StartBug> rad_get_vendor_attr ( u_int32_t * vendor , const void * * data , size_t * len ) <S2SV_EndBug> { struct vendor_attribute * attr ; <S2SV_StartBug> attr = ( struct vendor_attribute * ) * data ; <S2SV_EndBug> <S2SV_StartBug> * vendor = ntohl ( attr -> vendor_value ) ; <S2SV_EndBug> * data = attr -> attrib_data ; * len = attr -> attrib_len - 2 ; <S2SV_StartBug> return ( attr -> attrib_type ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_int32_t * vendor , unsigned char * type <S2SV_ModStart> size_t * len , const void * raw , size_t raw_len <S2SV_ModStart> * attr ; if ( raw_len < sizeof ( struct vendor_attribute ) ) { return - 1 ; } <S2SV_ModStart> vendor_attribute * ) raw <S2SV_ModEnd> ; * vendor <S2SV_ModStart> -> vendor_value ) ; * type = attr -> attrib_type <S2SV_ModStart> - 2 ; if ( ( attr -> attrib_len + 4 ) > raw_len ) { return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12877\n\n```\nCWE-416 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; register Quantum * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } quantum_info = ( QuantumInfo * ) NULL ; clone_info = ( ImageInfo * ) NULL ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image2 = ReadMATImageV4 ( image_info , image , exception ) ; if ( image2 == NULL ) goto MATLAB_KO ; image = image2 ; goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) { MATLAB_KO : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; if ( ( MagickSizeType ) ( MATLAB_HDR . ObjectSize + filepos ) > GetBlobSize ( image ) ) goto MATLAB_KO ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; clone_info = CloneImageInfo ( image_info ) ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = decompress_block ( image , & MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) { clone_info = DestroyImageInfo ( clone_info ) ; continue ; } MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; ( void ) ReadBlobXXXLong ( image2 ) ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; default : if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( unsigned long ) ldblk * MATLAB_HDR . SizeY > MATLAB_HDR . ObjectSize ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { image -> type = GrayscaleType ; SetImageColorspace ( image , GRAYColorspace , exception ) ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) { if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; return ( DestroyImageList ( image ) ) ; } quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( image , q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( image , ( double * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( image , ( float * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image , exception ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( ( image2 != NULL ) && ( image2 != image ) ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; } RelinquishMagickMemory ( BImgBuff ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; END_OF_READING : <S2SV_StartBug> if ( clone_info ) <S2SV_EndBug> clone_info = DestroyImageInfo ( clone_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; <S2SV_StartBug> DeleteImageFromList ( & tmp ) ; <S2SV_EndBug> } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) else if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; END_OF_READING : <S2SV_ModEnd> CloseBlob ( image <S2SV_ModStart> -> previous ; if ( tmp == image2 ) image2 = ( Image * ) NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20748\n\n```\nCWE-787 rfbBool HandleRFBServerMessage ( rfbClient * client ) { rfbServerToClientMsg msg ; if ( client -> serverPort == - 1 ) client -> vncRec -> readTimestamp = TRUE ; if ( ! ReadFromRFBServer ( client , ( char * ) & msg , 1 ) ) return FALSE ; switch ( msg . type ) { case rfbSetColourMapEntries : { break ; } case rfbFramebufferUpdate : { rfbFramebufferUpdateRectHeader rect ; int linesToRead ; int bytesPerLine ; int i ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg . fu ) + 1 , sz_rfbFramebufferUpdateMsg - 1 ) ) return FALSE ; msg . fu . nRects = rfbClientSwap16IfLE ( msg . fu . nRects ) ; for ( i = 0 ; i < msg . fu . nRects ; i ++ ) { if ( ! ReadFromRFBServer ( client , ( char * ) & rect , sz_rfbFramebufferUpdateRectHeader ) ) return FALSE ; rect . encoding = rfbClientSwap32IfLE ( rect . encoding ) ; if ( rect . encoding == rfbEncodingLastRect ) break ; rect . r . x = rfbClientSwap16IfLE ( rect . r . x ) ; rect . r . y = rfbClientSwap16IfLE ( rect . r . y ) ; rect . r . w = rfbClientSwap16IfLE ( rect . r . w ) ; rect . r . h = rfbClientSwap16IfLE ( rect . r . h ) ; if ( rect . encoding == rfbEncodingXCursor || rect . encoding == rfbEncodingRichCursor ) { if ( ! HandleCursorShape ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h , rect . encoding ) ) { return FALSE ; } continue ; } if ( rect . encoding == rfbEncodingPointerPos ) { if ( ! client -> HandleCursorPos ( client , rect . r . x , rect . r . y ) ) { return FALSE ; } continue ; } if ( rect . encoding == rfbEncodingKeyboardLedState ) { client -> KeyboardLedStateEnabled = 1 ; if ( client -> HandleKeyboardLedState != NULL ) client -> HandleKeyboardLedState ( client , rect . r . x , 0 ) ; client -> CurrentKeyboardLedState = rect . r . x ; continue ; } if ( rect . encoding == rfbEncodingNewFBSize ) { client -> width = rect . r . w ; client -> height = rect . r . h ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , rect . r . w , rect . r . h , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , rect . r . w , rect . r . h ) ; continue ; } if ( rect . encoding == rfbEncodingSupportedMessages ) { int loop ; if ( ! ReadFromRFBServer ( client , ( char * ) & client -> supportedMessages , sz_rfbSupportedMessages ) ) return FALSE ; rfbClientLog ( \"client2server<S2SV_blank>supported<S2SV_blank>messages<S2SV_blank>(bit<S2SV_blank>flags)\\\\n\" ) ; for ( loop = 0 ; loop < 32 ; loop += 8 ) rfbClientLog ( \"%02X:<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>-<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x\\\\n\" , loop , client -> supportedMessages . client2server [ loop ] , client -> supportedMessages . client2server [ loop + 1 ] , client -> supportedMessages . client2server [ loop + 2 ] , client -> supportedMessages . client2server [ loop + 3 ] , client -> supportedMessages . client2server [ loop + 4 ] , client -> supportedMessages . client2server [ loop + 5 ] , client -> supportedMessages . client2server [ loop + 6 ] , client -> supportedMessages . client2server [ loop + 7 ] ) ; rfbClientLog ( \"server2client<S2SV_blank>supported<S2SV_blank>messages<S2SV_blank>(bit<S2SV_blank>flags)\\\\n\" ) ; for ( loop = 0 ; loop < 32 ; loop += 8 ) rfbClientLog ( \"%02X:<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>-<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x\\\\n\" , loop , client -> supportedMessages . server2client [ loop ] , client -> supportedMessages . server2client [ loop + 1 ] , client -> supportedMessages . server2client [ loop + 2 ] , client -> supportedMessages . server2client [ loop + 3 ] , client -> supportedMessages . server2client [ loop + 4 ] , client -> supportedMessages . server2client [ loop + 5 ] , client -> supportedMessages . server2client [ loop + 6 ] , client -> supportedMessages . server2client [ loop + 7 ] ) ; continue ; } if ( rect . encoding == rfbEncodingSupportedEncodings ) { char * buffer ; buffer = malloc ( rect . r . w ) ; if ( ! ReadFromRFBServer ( client , buffer , rect . r . w ) ) { free ( buffer ) ; return FALSE ; } free ( buffer ) ; continue ; } if ( rect . encoding == rfbEncodingServerIdentity ) { char * buffer ; buffer = malloc ( rect . r . w + 1 ) ; if ( ! ReadFromRFBServer ( client , buffer , rect . r . w ) ) { free ( buffer ) ; return FALSE ; } buffer [ rect . r . w ] = 0 ; rfbClientLog ( \"Connected<S2SV_blank>to<S2SV_blank>Server<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , buffer ) ; free ( buffer ) ; continue ; } if ( rect . encoding != rfbEncodingUltraZip ) { if ( ( rect . r . x + rect . r . w > client -> width ) || ( rect . r . y + rect . r . h > client -> height ) ) { rfbClientLog ( \"Rect<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%dx%d<S2SV_blank>at<S2SV_blank>(%d,<S2SV_blank>%d)\\\\n\" , rect . r . w , rect . r . h , rect . r . x , rect . r . y ) ; return FALSE ; } client -> SoftCursorLockArea ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ; } switch ( rect . encoding ) { case rfbEncodingRaw : { int y = rect . r . y , h = rect . r . h ; bytesPerLine = rect . r . w * client -> format . bitsPerPixel / 8 ; linesToRead = bytesPerLine ? ( RFB_BUFFER_SIZE / bytesPerLine ) : 0 ; while ( linesToRead && h > 0 ) { if ( linesToRead > h ) linesToRead = h ; if ( ! ReadFromRFBServer ( client , client -> buffer , bytesPerLine * linesToRead ) ) return FALSE ; client -> GotBitmap ( client , ( uint8_t * ) client -> buffer , rect . r . x , y , rect . r . w , linesToRead ) ; h -= linesToRead ; y += linesToRead ; } break ; } case rfbEncodingCopyRect : { rfbCopyRect cr ; if ( ! ReadFromRFBServer ( client , ( char * ) & cr , sz_rfbCopyRect ) ) return FALSE ; cr . srcX = rfbClientSwap16IfLE ( cr . srcX ) ; cr . srcY = rfbClientSwap16IfLE ( cr . srcY ) ; client -> SoftCursorLockArea ( client , cr . srcX , cr . srcY , rect . r . w , rect . r . h ) ; client -> GotCopyRect ( client , cr . srcX , cr . srcY , rect . r . w , rect . r . h , rect . r . x , rect . r . y ) ; break ; } case rfbEncodingRRE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleRRE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleRRE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleRRE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingCoRRE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleCoRRE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleCoRRE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleCoRRE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingHextile : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleHextile8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleHextile16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleHextile32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingUltra : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleUltra8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleUltra16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleUltra32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingUltraZip : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleUltraZip8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleUltraZip16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleUltraZip32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingTRLE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleTRLE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( client -> si . format . greenMax > 0x1F ) { if ( ! HandleTRLE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else { if ( ! HandleTRLE15 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } break ; case 32 : { uint32_t maxColor = ( client -> format . redMax << client -> format . redShift ) | ( client -> format . greenMax << client -> format . greenShift ) | ( client -> format . blueMax << client -> format . blueShift ) ; if ( ( client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) || ( ! client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) ) { if ( ! HandleTRLE24 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) { if ( ! HandleTRLE24Up ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) { if ( ! HandleTRLE24Down ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! HandleTRLE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } } break ; } # ifdef LIBVNCSERVER_HAVE_LIBZ case rfbEncodingZlib : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleZlib8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleZlib16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleZlib32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } # ifdef LIBVNCSERVER_HAVE_LIBJPEG case rfbEncodingTight : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleTight8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleTight16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleTight32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } # endif case rfbEncodingZRLE : client -> appData . qualityLevel = 9 ; case rfbEncodingZYWRLE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleZRLE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( client -> si . format . greenMax > 0x1F ) { if ( ! HandleZRLE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else { if ( ! HandleZRLE15 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } break ; case 32 : { uint32_t maxColor = ( client -> format . redMax << client -> format . redShift ) | ( client -> format . greenMax << client -> format . greenShift ) | ( client -> format . blueMax << client -> format . blueShift ) ; if ( ( client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) || ( ! client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) ) { if ( ! HandleZRLE24 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) { if ( ! HandleZRLE24Up ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) { if ( ! HandleZRLE24Down ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! HandleZRLE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } } break ; } # endif default : { rfbBool handled = FALSE ; rfbClientProtocolExtension * e ; for ( e = rfbClientExtensions ; ! handled && e ; e = e -> next ) if ( e -> handleEncoding && e -> handleEncoding ( client , & rect ) ) handled = TRUE ; if ( ! handled ) { rfbClientLog ( \"Unknown<S2SV_blank>rect<S2SV_blank>encoding<S2SV_blank>%d\\\\n\" , ( int ) rect . encoding ) ; return FALSE ; } } } client -> SoftCursorUnlockScreen ( client ) ; client -> GotFrameBufferUpdate ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ; } if ( ! SendIncrementalFramebufferUpdateRequest ( client ) ) return FALSE ; if ( client -> FinishedFrameBufferUpdate ) client -> FinishedFrameBufferUpdate ( client ) ; break ; } case rfbBell : { client -> Bell ( client ) ; break ; } case rfbServerCutText : { char * buffer ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbServerCutTextMsg - 1 ) ) return FALSE ; msg . sct . length = rfbClientSwap32IfLE ( msg . sct . length ) ; <S2SV_StartBug> buffer = malloc ( ( uint64_t ) msg . sct . length + 1 ) ; <S2SV_EndBug> if ( ! ReadFromRFBServer ( client , buffer , msg . sct . length ) ) { free ( buffer ) ; return FALSE ; } buffer [ msg . sct . length ] = 0 ; if ( client -> GotXCutText ) client -> GotXCutText ( client , buffer , msg . sct . length ) ; free ( buffer ) ; break ; } case rfbTextChat : { char * buffer = NULL ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbTextChatMsg - 1 ) ) return FALSE ; msg . tc . length = rfbClientSwap32IfLE ( msg . sct . length ) ; switch ( msg . tc . length ) { case rfbTextChatOpen : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Open\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatOpen , NULL ) ; break ; case rfbTextChatClose : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Close\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatClose , NULL ) ; break ; case rfbTextChatFinished : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Finished\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatFinished , NULL ) ; break ; default : buffer = malloc ( msg . tc . length + 1 ) ; if ( ! ReadFromRFBServer ( client , buffer , msg . tc . length ) ) { free ( buffer ) ; return FALSE ; } buffer [ msg . tc . length ] = 0 ; rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , buffer ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) msg . tc . length , buffer ) ; free ( buffer ) ; break ; } break ; } case rfbXvp : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbXvpMsg - 1 ) ) return FALSE ; SetClient2Server ( client , rfbXvp ) ; SetServer2Client ( client , rfbXvp ) ; if ( client -> HandleXvpMsg ) client -> HandleXvpMsg ( client , msg . xvp . version , msg . xvp . code ) ; break ; } case rfbResizeFrameBuffer : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbResizeFrameBufferMsg - 1 ) ) return FALSE ; client -> width = rfbClientSwap16IfLE ( msg . rsfb . framebufferWidth ) ; client -> height = rfbClientSwap16IfLE ( msg . rsfb . framebufferHeigth ) ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , client -> width , client -> height , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , client -> width , client -> height ) ; break ; } case rfbPalmVNCReSizeFrameBuffer : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbPalmVNCReSizeFrameBufferMsg - 1 ) ) return FALSE ; client -> width = rfbClientSwap16IfLE ( msg . prsfb . buffer_w ) ; client -> height = rfbClientSwap16IfLE ( msg . prsfb . buffer_h ) ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , client -> width , client -> height , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , client -> width , client -> height ) ; break ; } default : { rfbBool handled = FALSE ; rfbClientProtocolExtension * e ; for ( e = rfbClientExtensions ; ! handled && e ; e = e -> next ) if ( e -> handleMessage && e -> handleMessage ( client , & msg ) ) handled = TRUE ; if ( ! handled ) { char buffer [ 256 ] ; rfbClientLog ( \"Unknown<S2SV_blank>message<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>VNC<S2SV_blank>server\\\\n\" , msg . type ) ; ReadFromRFBServer ( client , buffer , 256 ) ; return FALSE ; } } } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length ) ; if ( msg . sct . length > 1 << 20 ) { rfbClientErr ( \"Ignoring<S2SV_blank>too<S2SV_blank>big<S2SV_blank>cut<S2SV_blank>text<S2SV_blank>length<S2SV_blank>sent<S2SV_blank>by<S2SV_blank>server:<S2SV_blank>%u<S2SV_blank>B<S2SV_blank>><S2SV_blank>1<S2SV_blank>MB\\\\n\" , ( unsigned int ) msg . sct . length ) ; return FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int __gfs2_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int error ; int len ; char * data ; const char * name = gfs2_acl_name ( type ) ; if ( acl && acl -> a_count > GFS2_ACL_MAX_ENTRIES ( GFS2_SB ( inode ) ) ) return - E2BIG ; if ( type == ACL_TYPE_ACCESS ) { umode_t mode = inode -> i_mode ; <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; if ( error == 0 ) acl = NULL ; <S2SV_StartBug> if ( mode != inode -> i_mode ) { <S2SV_EndBug> inode -> i_mode = mode ; mark_inode_dirty ( inode ) ; <S2SV_StartBug> } <S2SV_EndBug> } if ( acl ) { len = posix_acl_to_xattr ( & init_user_ns , acl , NULL , 0 ) ; if ( len == 0 ) return 0 ; data = kmalloc ( len , GFP_NOFS ) ; if ( data == NULL ) return - ENOMEM ; error = posix_acl_to_xattr ( & init_user_ns , acl , data , len ) ; if ( error < 0 ) goto out ; } else { data = NULL ; len = 0 ; } error = __gfs2_xattr_set ( inode , name , data , len , 0 , GFS2_EATYPE_SYS ) ; if ( error ) goto out ; set_cached_acl ( inode , type , acl ) ; out : kfree ( data ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; error = posix_acl_update_mode ( inode , & inode -> i_mode , & acl ) ; if ( error ) return error <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> i_mode ) <S2SV_ModEnd> mark_inode_dirty ( inode <S2SV_ModStart> inode ) ; <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int http_buf_read ( URLContext * h , uint8_t * buf , int size ) { HTTPContext * s = h -> priv_data ; int len ; len = s -> buf_end - s -> buf_ptr ; if ( len > 0 ) { if ( len > size ) len = size ; memcpy ( buf , s -> buf_ptr , len ) ; s -> buf_ptr += len ; } else { <S2SV_StartBug> int64_t target_end = s -> end_off ? s -> end_off : s -> filesize ; <S2SV_EndBug> <S2SV_StartBug> if ( ( ! s -> willclose || s -> chunksize < 0 ) && <S2SV_EndBug> target_end >= 0 && s -> off >= target_end ) return AVERROR_EOF ; len = ffurl_read ( s -> hd , buf , size ) ; <S2SV_StartBug> if ( ! len && ( ! s -> willclose || s -> chunksize < 0 ) && <S2SV_EndBug> target_end >= 0 && s -> off < target_end ) { av_log ( h , AV_LOG_ERROR , <S2SV_StartBug> \"Stream<S2SV_blank>ends<S2SV_blank>prematurely<S2SV_blank>at<S2SV_blank>%\" PRId64 \",<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%\" PRId64 \"\\\\n\" , <S2SV_EndBug> s -> off , target_end ) ; return AVERROR ( EIO ) ; } } if ( len > 0 ) { s -> off += len ; if ( s -> chunksize > 0 ) s -> chunksize -= len ; } return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { uint64_t <S2SV_ModEnd> target_end = s <S2SV_ModStart> s -> chunksize == UINT64_MAX ) <S2SV_ModEnd> && s -> <S2SV_ModStart> s -> chunksize == UINT64_MAX ) && s -> off < <S2SV_ModEnd> target_end ) { <S2SV_ModStart> AV_LOG_ERROR , \"Stream<S2SV_blank>ends<S2SV_blank>prematurely<S2SV_blank>at<S2SV_blank>%\" PRIu64 \",<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%\" PRIu64 <S2SV_ModEnd> \"\\\\n\" , s\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_end_second_pass ( VP8_COMP * cpi ) { <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi ) { ( void ) cpi ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8073\n\n```\nCWE-119 char * irc_ctcp_dcc_filename_without_quotes ( const char * filename ) { int length ; length = strlen ( filename ) ; <S2SV_StartBug> if ( length > 0 ) <S2SV_EndBug> { if ( ( filename [ 0 ] == \\'\\\\\"\\' ) && ( filename [ length - 1 ] == \\'\\\\\"\\' ) ) return weechat_strndup ( filename + 1 , length - 2 ) ; } return strdup ( filename ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( length > 1 <S2SV_ModEnd> ) { if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19044\n\n```\nCWE-401 int v3d_submit_cl_ioctl ( struct drm_device * dev , void * data , struct drm_file * file_priv ) { struct v3d_dev * v3d = to_v3d_dev ( dev ) ; struct v3d_file_priv * v3d_priv = file_priv -> driver_priv ; struct drm_v3d_submit_cl * args = data ; struct v3d_bin_job * bin = NULL ; struct v3d_render_job * render ; struct ww_acquire_ctx acquire_ctx ; int ret = 0 ; trace_v3d_submit_cl_ioctl ( & v3d -> drm , args -> rcl_start , args -> rcl_end ) ; if ( args -> pad != 0 ) { DRM_INFO ( \"pad<S2SV_blank>must<S2SV_blank>be<S2SV_blank>zero:<S2SV_blank>%d\\\\n\" , args -> pad ) ; return - EINVAL ; } render = kcalloc ( 1 , sizeof ( * render ) , GFP_KERNEL ) ; if ( ! render ) return - ENOMEM ; render -> start = args -> rcl_start ; render -> end = args -> rcl_end ; INIT_LIST_HEAD ( & render -> unref_list ) ; ret = v3d_job_init ( v3d , file_priv , & render -> base , v3d_render_job_free , args -> in_sync_rcl ) ; if ( ret ) { kfree ( render ) ; return ret ; } if ( args -> bcl_start != args -> bcl_end ) { bin = kcalloc ( 1 , sizeof ( * bin ) , GFP_KERNEL ) ; <S2SV_StartBug> if ( ! bin ) <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> ret = v3d_job_init ( v3d , file_priv , & bin -> base , <S2SV_EndBug> v3d_job_free , args -> in_sync_bcl ) ; if ( ret ) { <S2SV_StartBug> v3d_job_put ( & render -> base ) ; <S2SV_EndBug> return ret ; } bin -> start = args -> bcl_start ; bin -> end = args -> bcl_end ; bin -> qma = args -> qma ; bin -> qms = args -> qms ; bin -> qts = args -> qts ; bin -> render = render ; } ret = v3d_lookup_bos ( dev , file_priv , & render -> base , args -> bo_handles , args -> bo_handle_count ) ; if ( ret ) goto fail ; ret = v3d_lock_bo_reservations ( & render -> base , & acquire_ctx ) ; if ( ret ) goto fail ; mutex_lock ( & v3d -> sched_lock ) ; if ( bin ) { ret = v3d_push_job ( v3d_priv , & bin -> base , V3D_BIN ) ; if ( ret ) goto fail_unreserve ; ret = drm_gem_fence_array_add ( & render -> base . deps , dma_fence_get ( bin -> base . done_fence ) ) ; if ( ret ) goto fail_unreserve ; } ret = v3d_push_job ( v3d_priv , & render -> base , V3D_RENDER ) ; if ( ret ) goto fail_unreserve ; mutex_unlock ( & v3d -> sched_lock ) ; v3d_attach_fences_and_unlock_reservation ( file_priv , & render -> base , & acquire_ctx , args -> out_sync , render -> base . done_fence ) ; if ( bin ) v3d_job_put ( & bin -> base ) ; v3d_job_put ( & render -> base ) ; return 0 ; fail_unreserve : mutex_unlock ( & v3d -> sched_lock ) ; drm_gem_unlock_reservations ( render -> base . bo , render -> base . bo_count , & acquire_ctx ) ; fail : if ( bin ) v3d_job_put ( & bin -> base ) ; v3d_job_put ( & render -> base ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! bin ) { v3d_job_put ( & render -> base ) ; <S2SV_ModStart> - ENOMEM ; } <S2SV_ModStart> render -> base ) ; kfree ( bin\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 stmt_ty <S2SV_StartBug> With ( asdl_seq * items , asdl_seq * body , int lineno , int col_offset , int <S2SV_EndBug> end_lineno , int end_col_offset , PyArena * arena ) { stmt_ty p ; p = ( stmt_ty ) PyArena_Malloc ( arena , sizeof ( * p ) ) ; if ( ! p ) return NULL ; p -> kind = With_kind ; p -> v . With . items = items ; p -> v . With . body = body ; <S2SV_StartBug> p -> lineno = lineno ; <S2SV_EndBug> p -> col_offset = col_offset ; p -> end_lineno = end_lineno ; p -> end_col_offset = end_col_offset ; return p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * body , string type_comment , <S2SV_ModStart> ; p -> v . With . type_comment = type_comment ; p ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8830\n\n```\nCWE-000 static ssize_t aio_setup_vectored_rw ( struct kiocb * kiocb , int rw , char __user * buf , unsigned long * nr_segs , size_t * len , struct iovec * * iovec , <S2SV_StartBug> bool compat ) <S2SV_EndBug> { ssize_t ret ; * nr_segs = * len ; # ifdef CONFIG_COMPAT if ( compat ) ret = compat_rw_copy_check_uvector ( rw , ( struct compat_iovec __user * ) buf , * nr_segs , UIO_FASTIOV , * iovec , iovec ) ; else # endif ret = rw_copy_check_uvector ( rw , ( struct iovec __user * ) buf , * nr_segs , UIO_FASTIOV , * iovec , iovec ) ; if ( ret < 0 ) return ret ; * len = ret ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , bool compat , struct iov_iter * iter <S2SV_ModStart> = ret ; iov_iter_init ( iter , rw , * iovec , * nr_segs , * len ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8655\n\n```\nCWE-416 static int packet_set_ring ( struct sock * sk , union tpacket_req_u * req_u , int closing , int tx_ring ) { struct pgv * pg_vec = NULL ; struct packet_sock * po = pkt_sk ( sk ) ; int was_running , order = 0 ; struct packet_ring_buffer * rb ; struct sk_buff_head * rb_queue ; __be16 num ; int err = - EINVAL ; <S2SV_StartBug> struct tpacket_req * req = & req_u -> req ; <S2SV_EndBug> if ( ! closing && tx_ring && ( po -> tp_version > TPACKET_V2 ) ) { net_warn_ratelimited ( \"Tx-ring<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported.\\\\n\" ) ; goto out ; } rb = tx_ring ? & po -> tx_ring : & po -> rx_ring ; rb_queue = tx_ring ? & sk -> sk_write_queue : & sk -> sk_receive_queue ; err = - EBUSY ; if ( ! closing ) { if ( atomic_read ( & po -> mapped ) ) goto out ; if ( packet_read_pending ( rb ) ) goto out ; } if ( req -> tp_block_nr ) { err = - EBUSY ; if ( unlikely ( rb -> pg_vec ) ) goto out ; switch ( po -> tp_version ) { case TPACKET_V1 : po -> tp_hdrlen = TPACKET_HDRLEN ; break ; case TPACKET_V2 : po -> tp_hdrlen = TPACKET2_HDRLEN ; break ; case TPACKET_V3 : po -> tp_hdrlen = TPACKET3_HDRLEN ; break ; } err = - EINVAL ; if ( unlikely ( ( int ) req -> tp_block_size <= 0 ) ) goto out ; if ( unlikely ( ! PAGE_ALIGNED ( req -> tp_block_size ) ) ) goto out ; if ( po -> tp_version >= TPACKET_V3 && ( int ) ( req -> tp_block_size - BLK_PLUS_PRIV ( req_u -> req3 . tp_sizeof_priv ) ) <= 0 ) goto out ; if ( unlikely ( req -> tp_frame_size < po -> tp_hdrlen + po -> tp_reserve ) ) goto out ; if ( unlikely ( req -> tp_frame_size & ( TPACKET_ALIGNMENT - 1 ) ) ) goto out ; rb -> frames_per_block = req -> tp_block_size / req -> tp_frame_size ; if ( unlikely ( rb -> frames_per_block == 0 ) ) goto out ; if ( unlikely ( ( rb -> frames_per_block * req -> tp_block_nr ) != req -> tp_frame_nr ) ) goto out ; err = - ENOMEM ; order = get_order ( req -> tp_block_size ) ; pg_vec = alloc_pg_vec ( req , order ) ; if ( unlikely ( ! pg_vec ) ) goto out ; switch ( po -> tp_version ) { case TPACKET_V3 : if ( ! tx_ring ) init_prb_bdqc ( po , rb , pg_vec , req_u ) ; break ; default : break ; } } else { err = - EINVAL ; if ( unlikely ( req -> tp_frame_nr ) ) goto out ; } <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> spin_lock ( & po -> bind_lock ) ; was_running = po -> running ; num = po -> num ; if ( was_running ) { po -> num = 0 ; __unregister_prot_hook ( sk , false ) ; } spin_unlock ( & po -> bind_lock ) ; synchronize_net ( ) ; err = - EBUSY ; mutex_lock ( & po -> pg_vec_lock ) ; if ( closing || atomic_read ( & po -> mapped ) == 0 ) { err = 0 ; spin_lock_bh ( & rb_queue -> lock ) ; swap ( rb -> pg_vec , pg_vec ) ; rb -> frame_max = ( req -> tp_frame_nr - 1 ) ; rb -> head = 0 ; rb -> frame_size = req -> tp_frame_size ; spin_unlock_bh ( & rb_queue -> lock ) ; swap ( rb -> pg_vec_order , order ) ; swap ( rb -> pg_vec_len , req -> tp_block_nr ) ; rb -> pg_vec_pages = req -> tp_block_size / PAGE_SIZE ; po -> prot_hook . func = ( po -> rx_ring . pg_vec ) ? tpacket_rcv : packet_rcv ; skb_queue_purge ( rb_queue ) ; if ( atomic_read ( & po -> mapped ) ) pr_err ( \"packet_mmap:<S2SV_blank>vma<S2SV_blank>is<S2SV_blank>busy:<S2SV_blank>%d\\\\n\" , atomic_read ( & po -> mapped ) ) ; } mutex_unlock ( & po -> pg_vec_lock ) ; spin_lock ( & po -> bind_lock ) ; if ( was_running ) { po -> num = num ; register_prot_hook ( sk ) ; } spin_unlock ( & po -> bind_lock ) ; if ( closing && ( po -> tp_version > TPACKET_V2 ) ) { if ( ! tx_ring ) prb_shutdown_retire_blk_timer ( po , rb_queue ) ; } <S2SV_StartBug> release_sock ( sk ) ; <S2SV_EndBug> <S2SV_StartBug> if ( pg_vec ) <S2SV_EndBug> free_pg_vec ( pg_vec , order , req -> tp_block_nr ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> req_u -> req ; lock_sock ( sk ) <S2SV_ModStart> out ; } <S2SV_ModEnd> spin_lock ( & <S2SV_ModStart> ) ; } if ( pg_vec ) free_pg_vec ( pg_vec , order , req -> tp_block_nr ) ; out : <S2SV_ModStart> sk ) ; <S2SV_ModEnd> return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t coapClientSetTxBlockSize ( CoapClientRequest * request , uint_t blockSize ) { if ( request == NULL ) return ERROR_INVALID_PARAMETER ; osAcquireMutex ( & request -> context -> mutex ) ; if ( blockSize == 16 ) <S2SV_StartBug> request -> txBlockSzx = COAP_BLOCK_SIZE_16 ; <S2SV_EndBug> <S2SV_StartBug> else if ( blockSize == 32 ) <S2SV_EndBug> <S2SV_StartBug> request -> txBlockSzx = COAP_BLOCK_SIZE_32 ; <S2SV_EndBug> <S2SV_StartBug> else if ( blockSize == 64 ) <S2SV_EndBug> <S2SV_StartBug> request -> txBlockSzx = COAP_BLOCK_SIZE_64 ; <S2SV_EndBug> <S2SV_StartBug> else if ( blockSize == 128 ) <S2SV_EndBug> <S2SV_StartBug> request -> txBlockSzx = COAP_BLOCK_SIZE_128 ; <S2SV_EndBug> <S2SV_StartBug> else if ( blockSize == 256 ) <S2SV_EndBug> <S2SV_StartBug> request -> txBlockSzx = COAP_BLOCK_SIZE_256 ; <S2SV_EndBug> <S2SV_StartBug> else if ( blockSize == 512 ) <S2SV_EndBug> <S2SV_StartBug> request -> txBlockSzx = COAP_BLOCK_SIZE_512 ; <S2SV_EndBug> <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> request -> txBlockSzx = COAP_BLOCK_SIZE_1024 ; <S2SV_EndBug> if ( request -> txBlockSzx > coapClientGetMaxBlockSize ( ) ) <S2SV_StartBug> request -> txBlockSzx = coapClientGetMaxBlockSize ( ) ; <S2SV_EndBug> osReleaseMutex ( & request -> context -> mutex ) ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 16 ) { <S2SV_ModStart> = COAP_BLOCK_SIZE_16 ; } <S2SV_ModStart> == 32 ) { <S2SV_ModStart> = COAP_BLOCK_SIZE_32 ; } <S2SV_ModStart> == 64 ) { <S2SV_ModStart> = COAP_BLOCK_SIZE_64 ; } <S2SV_ModStart> == 128 ) { <S2SV_ModStart> = COAP_BLOCK_SIZE_128 ; } <S2SV_ModStart> == 256 ) { <S2SV_ModStart> = COAP_BLOCK_SIZE_256 ; } <S2SV_ModStart> == 512 ) { <S2SV_ModStart> = COAP_BLOCK_SIZE_512 ; } else { <S2SV_ModEnd> request -> txBlockSzx <S2SV_ModStart> = COAP_BLOCK_SIZE_1024 ; } <S2SV_ModStart> ( ) ) { <S2SV_ModStart> ( ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10021\n\n```\nCWE-000 static void sas_eh_finish_cmd ( struct scsi_cmnd * cmd ) { struct sas_ha_struct * sas_ha = SHOST_TO_SAS_HA ( cmd -> device -> host ) ; <S2SV_StartBug> struct sas_task * task = TO_SAS_TASK ( cmd ) ; <S2SV_EndBug> sas_end_task ( cmd , task ) ; <S2SV_StartBug> scsi_eh_finish_cmd ( cmd , & sas_ha -> eh_done_q ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct domain_device * dev = cmd_to_domain_dev ( cmd ) ; struct <S2SV_ModStart> task ) ; if ( dev_is_sata ( dev ) ) { list_move_tail ( & cmd -> eh_entry , & sas_ha -> eh_ata_q ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-90(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5730\n\n```\nCWE-90 krb5_error_code krb5_ldap_put_principal ( krb5_context context , krb5_db_entry * entry , char * * db_args ) { int l = 0 , kerberos_principal_object_type = 0 ; unsigned int ntrees = 0 , tre = 0 ; krb5_error_code st = 0 , tempst = 0 ; LDAP * ld = NULL ; LDAPMessage * result = NULL , * ent = NULL ; char * * subtreelist = NULL ; char * user = NULL , * subtree = NULL , * principal_dn = NULL ; <S2SV_StartBug> char * * values = NULL , * strval [ 10 ] = { NULL } , errbuf [ 1024 ] ; <S2SV_EndBug> char * filtuser = NULL ; struct berval * * bersecretkey = NULL ; LDAPMod * * mods = NULL ; krb5_boolean create_standalone = FALSE ; <S2SV_StartBug> krb5_boolean krb_identity_exists = FALSE , establish_links = FALSE ; <S2SV_EndBug> char * standalone_principal_dn = NULL ; krb5_tl_data * tl_data = NULL ; krb5_key_data * * keys = NULL ; kdb5_dal_handle * dal_handle = NULL ; krb5_ldap_context * ldap_context = NULL ; krb5_ldap_server_handle * ldap_server_handle = NULL ; osa_princ_ent_rec princ_ent = { 0 } ; xargs_t xargs = { 0 } ; char * polname = NULL ; OPERATION optype ; krb5_boolean found_entry = FALSE ; krb5_clear_error_message ( context ) ; SETUP_CONTEXT ( ) ; if ( ldap_context -> lrparams == NULL || ldap_context -> container_dn == NULL ) return EINVAL ; GET_HANDLE ( ) ; if ( ! is_principal_in_realm ( ldap_context , entry -> princ ) ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"Principal<S2SV_blank>does<S2SV_blank>not<S2SV_blank>belong<S2SV_blank>to<S2SV_blank>the<S2SV_blank>default<S2SV_blank>realm\" ) ) ; goto cleanup ; } if ( ( ( st = krb5_unparse_name ( context , entry -> princ , & user ) ) != 0 ) || ( ( st = krb5_ldap_unparse_principal_name ( user ) ) != 0 ) ) goto cleanup ; filtuser = ldap_filter_correct ( user ) ; if ( filtuser == NULL ) { st = ENOMEM ; goto cleanup ; } if ( entry -> mask & KADM5_PRINCIPAL ) optype = ADD_PRINCIPAL ; else optype = MODIFY_PRINCIPAL ; if ( ( ( st = krb5_get_princ_type ( context , entry , & kerberos_principal_object_type ) ) != 0 ) || ( ( st = krb5_get_userdn ( context , entry , & principal_dn ) ) != 0 ) ) goto cleanup ; if ( ( st = process_db_args ( context , db_args , & xargs , optype ) ) != 0 ) goto cleanup ; if ( entry -> mask & KADM5_LOAD ) { unsigned int tree = 0 ; int numlentries = 0 ; char * filter = NULL ; if ( asprintf ( & filter , FILTER \"%s))\" , filtuser ) < 0 ) { filter = NULL ; st = ENOMEM ; goto cleanup ; } if ( ( st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ) != 0 ) goto cleanup ; found_entry = FALSE ; for ( tree = 0 ; found_entry == FALSE && tree < ntrees ; ++ tree ) { if ( principal_dn == NULL ) { LDAP_SEARCH_1 ( subtreelist [ tree ] , ldap_context -> lrparams -> search_scope , filter , principal_attributes , IGNORE_STATUS ) ; } else { LDAP_SEARCH_1 ( principal_dn , LDAP_SCOPE_BASE , filter , principal_attributes , IGNORE_STATUS ) ; } if ( st == LDAP_SUCCESS ) { numlentries = ldap_count_entries ( ld , result ) ; if ( numlentries > 1 ) { free ( filter ) ; st = EINVAL ; k5_setmsg ( context , st , _ ( \"operation<S2SV_blank>can<S2SV_blank>not<S2SV_blank>continue,<S2SV_blank>more<S2SV_blank>than<S2SV_blank>one<S2SV_blank>\" \"entry<S2SV_blank>with<S2SV_blank>principal<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>found\" ) , user ) ; goto cleanup ; } else if ( numlentries == 1 ) { found_entry = TRUE ; if ( principal_dn == NULL ) { ent = ldap_first_entry ( ld , result ) ; if ( ent != NULL ) { if ( ( principal_dn = ldap_get_dn ( ld , ent ) ) == NULL ) { ldap_get_option ( ld , LDAP_OPT_RESULT_CODE , & st ) ; st = set_ldap_error ( context , st , 0 ) ; free ( filter ) ; goto cleanup ; } } } } } else if ( st != LDAP_NO_SUCH_OBJECT ) { st = set_ldap_error ( context , st , 0 ) ; free ( filter ) ; goto cleanup ; } ldap_msgfree ( result ) ; result = NULL ; } free ( filter ) ; if ( found_entry == FALSE && principal_dn != NULL ) { create_standalone = TRUE ; standalone_principal_dn = strdup ( principal_dn ) ; CHECK_NULL ( standalone_principal_dn ) ; } } if ( principal_dn == NULL && xargs . dn == NULL ) { if ( entry -> princ -> length == 2 && entry -> princ -> data [ 0 ] . length == strlen ( \"krbtgt\" ) && strncmp ( entry -> princ -> data [ 0 ] . data , \"krbtgt\" , entry -> princ -> data [ 0 ] . length ) == 0 ) { subtree = strdup ( ldap_context -> lrparams -> realmdn ) ; } else if ( xargs . containerdn ) { if ( ( st = checkattributevalue ( ld , xargs . containerdn , NULL , NULL , NULL ) ) != 0 ) { if ( st == KRB5_KDB_NOENTRY || st == KRB5_KDB_CONSTRAINT_VIOLATION ) { int ost = st ; st = EINVAL ; k5_wrapmsg ( context , ost , st , _ ( \"\\'%s\\'<S2SV_blank>not<S2SV_blank>found\" ) , xargs . containerdn ) ; } goto cleanup ; } subtree = strdup ( xargs . containerdn ) ; } else if ( ldap_context -> lrparams -> containerref && strlen ( ldap_context -> lrparams -> containerref ) != 0 ) { subtree = strdup ( ldap_context -> lrparams -> containerref ) ; } else { subtree = strdup ( ldap_context -> lrparams -> realmdn ) ; } CHECK_NULL ( subtree ) ; if ( asprintf ( & standalone_principal_dn , \"krbprincipalname=%s,%s\" , filtuser , subtree ) < 0 ) standalone_principal_dn = NULL ; CHECK_NULL ( standalone_principal_dn ) ; create_standalone = TRUE ; free ( subtree ) ; subtree = NULL ; } if ( xargs . dn_from_kbd == TRUE ) { <S2SV_StartBug> int dnlen = 0 , subtreelen = 0 ; <S2SV_EndBug> char * dn = NULL ; krb5_boolean outofsubtree = TRUE ; if ( xargs . dn != NULL ) { dn = xargs . dn ; } else if ( xargs . linkdn != NULL ) { dn = xargs . linkdn ; } else if ( standalone_principal_dn != NULL ) { dn = standalone_principal_dn ; } if ( subtreelist == NULL ) { st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ; if ( st ) <S2SV_StartBug> goto cleanup ; <S2SV_EndBug> } for ( tre = 0 ; tre < ntrees ; ++ tre ) { if ( subtreelist [ tre ] == NULL || strlen ( subtreelist [ tre ] ) == 0 ) { outofsubtree = FALSE ; break ; } else { dnlen = strlen ( dn ) ; subtreelen = strlen ( subtreelist [ tre ] ) ; if ( ( dnlen >= subtreelen ) && ( strcasecmp ( ( dn + dnlen - subtreelen ) , subtreelist [ tre ] ) == 0 ) ) { outofsubtree = FALSE ; break ; } } } if ( outofsubtree == TRUE ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"DN<S2SV_blank>is<S2SV_blank>out<S2SV_blank>of<S2SV_blank>the<S2SV_blank>realm<S2SV_blank>subtree\" ) ) ; goto cleanup ; } if ( standalone_principal_dn == NULL ) { char * attributes [ ] = { \"krbticketpolicyreference\" , \"krbprincipalname\" , NULL } ; ldap_msgfree ( result ) ; result = NULL ; LDAP_SEARCH_1 ( dn , LDAP_SCOPE_BASE , 0 , attributes , IGNORE_STATUS ) ; if ( st == LDAP_SUCCESS ) { ent = ldap_first_entry ( ld , result ) ; if ( ent != NULL ) { if ( ( values = ldap_get_values ( ld , ent , \"krbticketpolicyreference\" ) ) != NULL ) { ldap_value_free ( values ) ; } if ( ( values = ldap_get_values ( ld , ent , \"krbprincipalname\" ) ) != NULL ) { krb_identity_exists = TRUE ; ldap_value_free ( values ) ; } } } else { st = set_ldap_error ( context , st , OP_SEARCH ) ; goto cleanup ; } } } if ( xargs . dn != NULL && krb_identity_exists == TRUE ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"ldap<S2SV_blank>object<S2SV_blank>is<S2SV_blank>already<S2SV_blank>kerberized\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( xargs . linkdn != NULL ) { if ( optype == MODIFY_PRINCIPAL && kerberos_principal_object_type != KDB_STANDALONE_PRINCIPAL_OBJECT ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"link<S2SV_blank>information<S2SV_blank>can<S2SV_blank>not<S2SV_blank>be<S2SV_blank>set/updated<S2SV_blank>as<S2SV_blank>the<S2SV_blank>\" \"kerberos<S2SV_blank>principal<S2SV_blank>belongs<S2SV_blank>to<S2SV_blank>an<S2SV_blank>ldap<S2SV_blank>object\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } { char * * linkdns = NULL ; int j = 0 ; if ( ( st = krb5_get_linkdn ( context , entry , & linkdns ) ) != 0 ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Failed<S2SV_blank>getting<S2SV_blank>object<S2SV_blank>references\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( linkdns != NULL ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"kerberos<S2SV_blank>principal<S2SV_blank>is<S2SV_blank>already<S2SV_blank>linked<S2SV_blank>to<S2SV_blank>a<S2SV_blank>ldap<S2SV_blank>\" \"object\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; for ( j = 0 ; linkdns [ j ] != NULL ; ++ j ) free ( linkdns [ j ] ) ; free ( linkdns ) ; goto cleanup ; } } establish_links = TRUE ; } if ( entry -> mask & KADM5_LAST_SUCCESS ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> last_success ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastSuccessfulAuth\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_LAST_FAILED ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> last_failed ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastFailedAuth\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_FAIL_AUTH_COUNT ) { krb5_kvno fail_auth_count ; fail_auth_count = entry -> fail_auth_count ; if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) fail_auth_count ++ ; st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_REPLACE , fail_auth_count ) ; if ( st != 0 ) goto cleanup ; } else if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) { int attr_mask = 0 ; krb5_boolean has_fail_count ; st = krb5_get_attributes_mask ( context , entry , & attr_mask ) ; if ( st != 0 ) goto cleanup ; has_fail_count = ( ( attr_mask & KDB_FAIL_AUTH_COUNT_ATTR ) != 0 ) ; # ifdef LDAP_MOD_INCREMENT if ( ldap_server_handle -> server_info -> modify_increment && has_fail_count ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_INCREMENT , 1 ) ; if ( st != 0 ) goto cleanup ; } else { # endif if ( has_fail_count ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_DELETE , entry -> fail_auth_count ) ; if ( st != 0 ) goto cleanup ; } st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_ADD , entry -> fail_auth_count + 1 ) ; if ( st != 0 ) goto cleanup ; # ifdef LDAP_MOD_INCREMENT } # endif } else if ( optype == ADD_PRINCIPAL ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_ADD , 0 ) ; } if ( entry -> mask & KADM5_MAX_LIFE ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbmaxticketlife\" , LDAP_MOD_REPLACE , entry -> max_life ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_MAX_RLIFE ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbmaxrenewableage\" , LDAP_MOD_REPLACE , entry -> max_renewable_life ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_ATTRIBUTES ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbticketflags\" , LDAP_MOD_REPLACE , entry -> attributes ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_PRINCIPAL ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = user ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbprincipalname\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_PRINC_EXPIRE_TIME ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbprincipalexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_PW_EXPIRATION ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> pw_expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpasswordexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_POLICY || entry -> mask & KADM5_KEY_HIST ) { memset ( & princ_ent , 0 , sizeof ( princ_ent ) ) ; for ( tl_data = entry -> tl_data ; tl_data ; tl_data = tl_data -> tl_data_next ) { if ( tl_data -> tl_data_type == KRB5_TL_KADM_DATA ) { if ( ( st = krb5_lookup_tl_kadm_data ( tl_data , & princ_ent ) ) != 0 ) { goto cleanup ; } break ; } } } if ( entry -> mask & KADM5_POLICY ) { if ( princ_ent . aux_attributes & KADM5_POLICY ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( st = krb5_ldap_name_to_policydn ( context , princ_ent . policy , & polname ) ) != 0 ) goto cleanup ; strval [ 0 ] = polname ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } else { st = EINVAL ; k5_setmsg ( context , st , \"Password<S2SV_blank>policy<S2SV_blank>value<S2SV_blank>null\" ) ; goto cleanup ; } } else if ( entry -> mask & KADM5_LOAD && found_entry == TRUE ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_REPLACE , NULL ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_POLICY_CLR ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_DELETE , NULL ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_KEY_HIST ) { bersecretkey = krb5_encode_histkey ( & princ_ent ) ; if ( bersecretkey == NULL ) { st = ENOMEM ; goto cleanup ; } st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbpwdhistory\" , LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , bersecretkey ) ; if ( st != 0 ) goto cleanup ; free_berdata ( bersecretkey ) ; bersecretkey = NULL ; } if ( entry -> mask & KADM5_KEY_DATA || entry -> mask & KADM5_KVNO ) { krb5_kvno mkvno ; if ( ( st = krb5_dbe_lookup_mkvno ( context , entry , & mkvno ) ) != 0 ) goto cleanup ; bersecretkey = krb5_encode_krbsecretkey ( entry -> key_data , entry -> n_key_data , mkvno ) ; if ( bersecretkey == NULL ) { st = ENOMEM ; goto cleanup ; } if ( bersecretkey [ 0 ] != NULL || ! create_standalone ) { st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbprincipalkey\" , LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , bersecretkey ) ; if ( st != 0 ) goto cleanup ; } if ( ! ( entry -> mask & KADM5_PRINCIPAL ) ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> pw_expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpasswordexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } { krb5_timestamp last_pw_changed ; if ( ( st = krb5_dbe_lookup_last_pwd_change ( context , entry , & last_pw_changed ) ) != 0 ) goto cleanup ; memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( last_pw_changed ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastPwdChange\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } } st = update_ldap_mod_auth_ind ( context , entry , & mods ) ; if ( st != 0 ) goto cleanup ; if ( entry -> tl_data != NULL ) { int count = 0 ; struct berval * * ber_tl_data = NULL ; krb5_tl_data * ptr ; krb5_timestamp unlock_time ; for ( ptr = entry -> tl_data ; ptr != NULL ; ptr = ptr -> tl_data_next ) { if ( ptr -> tl_data_type == KRB5_TL_LAST_PWD_CHANGE # ifdef SECURID || ptr -> tl_data_type == KRB5_TL_DB_ARGS # endif || ptr -> tl_data_type == KRB5_TL_KADM_DATA || ptr -> tl_data_type == KDB_TL_USER_INFO || ptr -> tl_data_type == KRB5_TL_CONSTRAINED_DELEGATION_ACL || ptr -> tl_data_type == KRB5_TL_LAST_ADMIN_UNLOCK ) continue ; count ++ ; } if ( count != 0 ) { int j ; ber_tl_data = ( struct berval * * ) calloc ( count + 1 , sizeof ( struct berval * ) ) ; if ( ber_tl_data == NULL ) { st = ENOMEM ; goto cleanup ; } for ( j = 0 , ptr = entry -> tl_data ; ptr != NULL ; ptr = ptr -> tl_data_next ) { if ( ptr -> tl_data_type == KRB5_TL_LAST_PWD_CHANGE # ifdef SECURID || ptr -> tl_data_type == KRB5_TL_DB_ARGS # endif || ptr -> tl_data_type == KRB5_TL_KADM_DATA || ptr -> tl_data_type == KDB_TL_USER_INFO || ptr -> tl_data_type == KRB5_TL_CONSTRAINED_DELEGATION_ACL || ptr -> tl_data_type == KRB5_TL_LAST_ADMIN_UNLOCK ) continue ; if ( ( st = tl_data2berval ( ptr , & ber_tl_data [ j ] ) ) != 0 ) break ; j ++ ; } if ( st == 0 ) { ber_tl_data [ count ] = NULL ; st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbExtraData\" , LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , ber_tl_data ) ; } free_berdata ( ber_tl_data ) ; if ( st != 0 ) goto cleanup ; } if ( ( st = krb5_dbe_lookup_last_admin_unlock ( context , entry , & unlock_time ) ) != 0 ) goto cleanup ; if ( unlock_time != 0 ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( unlock_time ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastAdminUnlock\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } } if ( xargs . tktpolicydn != NULL ) { int tmask = 0 ; if ( strlen ( xargs . tktpolicydn ) != 0 ) { st = checkattributevalue ( ld , xargs . tktpolicydn , \"objectclass\" , policyclass , & tmask ) ; CHECK_CLASS_VALIDITY ( st , tmask , _ ( \"ticket<S2SV_blank>policy<S2SV_blank>object<S2SV_blank>value:<S2SV_blank>\" ) ) ; strval [ 0 ] = xargs . tktpolicydn ; strval [ 1 ] = NULL ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbticketpolicyreference\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } else { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbticketpolicyreference\" , LDAP_MOD_DELETE , NULL ) ) != 0 ) goto cleanup ; } } if ( establish_links == TRUE ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = xargs . linkdn ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbObjectReferences\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } if ( mods == NULL ) goto cleanup ; if ( create_standalone == TRUE ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = \"krbprincipal\" ; strval [ 1 ] = \"krbprincipalaux\" ; strval [ 2 ] = \"krbTicketPolicyAux\" ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"objectclass\" , LDAP_MOD_ADD , strval ) ) != 0 ) goto cleanup ; st = ldap_add_ext_s ( ld , standalone_principal_dn , mods , NULL , NULL ) ; if ( st == LDAP_ALREADY_EXISTS && entry -> mask & KADM5_LOAD ) { st = ldap_delete_ext_s ( ld , standalone_principal_dn , NULL , NULL ) ; if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Principal<S2SV_blank>delete<S2SV_blank>failed<S2SV_blank>(trying<S2SV_blank>to<S2SV_blank>replace<S2SV_blank>\" \"entry):<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_ADD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } else { st = ldap_add_ext_s ( ld , standalone_principal_dn , mods , NULL , NULL ) ; } } if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Principal<S2SV_blank>add<S2SV_blank>failed:<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_ADD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } } else { { char * attrvalues [ ] = { \"krbprincipalaux\" , \"krbTicketPolicyAux\" , NULL } ; int p , q , r = 0 , amask = 0 ; if ( ( st = checkattributevalue ( ld , ( xargs . dn ) ? xargs . dn : principal_dn , \"objectclass\" , attrvalues , & amask ) ) != 0 ) goto cleanup ; memset ( strval , 0 , sizeof ( strval ) ) ; for ( p = 1 , q = 0 ; p <= 2 ; p <<= 1 , ++ q ) { if ( ( p & amask ) == 0 ) strval [ r ++ ] = attrvalues [ q ] ; } if ( r != 0 ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"objectclass\" , LDAP_MOD_ADD , strval ) ) != 0 ) goto cleanup ; } } if ( xargs . dn != NULL ) st = ldap_modify_ext_s ( ld , xargs . dn , mods , NULL , NULL ) ; else st = ldap_modify_ext_s ( ld , principal_dn , mods , NULL , NULL ) ; if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"User<S2SV_blank>modification<S2SV_blank>failed:<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_MOD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) entry -> fail_auth_count ++ ; } cleanup : if ( user ) free ( user ) ; if ( filtuser ) free ( filtuser ) ; free_xargs ( xargs ) ; if ( standalone_principal_dn ) free ( standalone_principal_dn ) ; if ( principal_dn ) free ( principal_dn ) ; if ( polname != NULL ) free ( polname ) ; for ( tre = 0 ; tre < ntrees ; tre ++ ) free ( subtreelist [ tre ] ) ; free ( subtreelist ) ; if ( subtree ) free ( subtree ) ; if ( bersecretkey ) { for ( l = 0 ; bersecretkey [ l ] ; ++ l ) { if ( bersecretkey [ l ] -> bv_val ) free ( bersecretkey [ l ] -> bv_val ) ; free ( bersecretkey [ l ] ) ; } free ( bersecretkey ) ; } if ( keys ) free ( keys ) ; ldap_mods_free ( mods , 1 ) ; ldap_osa_free_princ_ent ( & princ_ent ) ; ldap_msgfree ( result ) ; krb5_ldap_put_handle_to_pool ( ldap_context , ldap_server_handle ) ; return ( st ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; char <S2SV_ModEnd> * strval [ <S2SV_ModStart> FALSE ; krb5_boolean <S2SV_ModEnd> establish_links = FALSE <S2SV_ModStart> TRUE ) { if ( subtreelist == NULL ) { st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ; if ( st ) goto cleanup ; } st = validate_xargs ( context , ldap_server_handle , & xargs , standalone_principal_dn , subtreelist , <S2SV_ModEnd> ntrees ) ; <S2SV_ModStart> ( st ) <S2SV_ModEnd> goto cleanup ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1065\n\n```\nCWE-476 unsigned int ipt_do_table ( struct sk_buff * skb , const struct nf_hook_state * state , struct xt_table * table ) { unsigned int hook = state -> hook ; static const char nulldevname [ IFNAMSIZ ] __attribute__ ( ( aligned ( sizeof ( long ) ) ) ) ; const struct iphdr * ip ; unsigned int verdict = NF_DROP ; const char * indev , * outdev ; const void * table_base ; struct ipt_entry * e , * * jumpstack ; unsigned int stackidx , cpu ; const struct xt_table_info * private ; struct xt_action_param acpar ; unsigned int addend ; stackidx = 0 ; ip = ip_hdr ( skb ) ; indev = state -> in ? state -> in -> name : nulldevname ; outdev = state -> out ? state -> out -> name : nulldevname ; acpar . fragoff = ntohs ( ip -> frag_off ) & IP_OFFSET ; acpar . thoff = ip_hdrlen ( skb ) ; acpar . hotdrop = false ; acpar . state = state ; WARN_ON ( ! ( table -> valid_hooks & ( 1 << hook ) ) ) ; local_bh_disable ( ) ; addend = xt_write_recseq_begin ( ) ; private = READ_ONCE ( table -> private ) ; cpu = smp_processor_id ( ) ; table_base = private -> entries ; jumpstack = ( struct ipt_entry * * ) private -> jumpstack [ cpu ] ; if ( static_key_false ( & xt_tee_enabled ) ) jumpstack += private -> stacksize * __this_cpu_read ( nf_skb_duplicated ) ; e = get_entry ( table_base , private -> hook_entry [ hook ] ) ; do { const struct xt_entry_target * t ; const struct xt_entry_match * ematch ; struct xt_counters * counter ; WARN_ON ( ! e ) ; if ( ! ip_packet_match ( ip , indev , outdev , & e -> ip , acpar . fragoff ) ) { no_match : e = ipt_next_entry ( e ) ; continue ; } xt_ematch_foreach ( ematch , e ) { acpar . match = ematch -> u . kernel . match ; acpar . matchinfo = ematch -> data ; if ( ! acpar . match -> match ( skb , & acpar ) ) goto no_match ; } counter = xt_get_this_cpu_counter ( & e -> counters ) ; ADD_COUNTER ( * counter , skb -> len , 1 ) ; t = ipt_get_target ( e ) ; WARN_ON ( ! t -> u . kernel . target ) ; # if IS_ENABLED ( CONFIG_NETFILTER_XT_TARGET_TRACE ) if ( unlikely ( skb -> nf_trace ) ) trace_packet ( state -> net , skb , hook , state -> in , state -> out , table -> name , private , e ) ; # endif if ( ! t -> u . kernel . target -> target ) { int v ; v = ( ( struct xt_standard_target * ) t ) -> verdict ; if ( v < 0 ) { if ( v != XT_RETURN ) { verdict = ( unsigned int ) ( - v ) - 1 ; break ; } if ( stackidx == 0 ) { e = get_entry ( table_base , private -> underflow [ hook ] ) ; } else { e = jumpstack [ -- stackidx ] ; e = ipt_next_entry ( e ) ; } continue ; } if ( table_base + v != ipt_next_entry ( e ) && <S2SV_StartBug> ! ( e -> ip . flags & IPT_F_GOTO ) ) <S2SV_EndBug> jumpstack [ stackidx ++ ] = e ; <S2SV_StartBug> e = get_entry ( table_base , v ) ; <S2SV_EndBug> continue ; } acpar . target = t -> u . kernel . target ; acpar . targinfo = t -> data ; verdict = t -> u . kernel . target -> target ( skb , & acpar ) ; if ( verdict == XT_CONTINUE ) { ip = ip_hdr ( skb ) ; e = ipt_next_entry ( e ) ; } else { break ; } } while ( ! acpar . hotdrop ) ; xt_write_recseq_end ( addend ) ; local_bh_enable ( ) ; if ( acpar . hotdrop ) return NF_DROP ; else return verdict ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IPT_F_GOTO ) ) { if ( unlikely ( stackidx >= private -> stacksize ) ) { verdict = NF_DROP ; break ; } <S2SV_ModStart> = e ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1957\n\n```\nCWE-264 static struct mnt_namespace * dup_mnt_ns ( struct mnt_namespace * mnt_ns , struct user_namespace * user_ns , struct fs_struct * fs ) { struct mnt_namespace * new_ns ; struct vfsmount * rootmnt = NULL , * pwdmnt = NULL ; struct mount * p , * q ; struct mount * old = mnt_ns -> root ; struct mount * new ; int copy_flags ; new_ns = alloc_mnt_ns ( user_ns ) ; if ( IS_ERR ( new_ns ) ) return new_ns ; down_write ( & namespace_sem ) ; copy_flags = CL_COPY_ALL | CL_EXPIRE ; if ( user_ns != mnt_ns -> user_ns ) <S2SV_StartBug> copy_flags |= CL_SHARED_TO_SLAVE ; <S2SV_EndBug> new = copy_tree ( old , old -> mnt . mnt_root , copy_flags ) ; if ( IS_ERR ( new ) ) { up_write ( & namespace_sem ) ; free_mnt_ns ( new_ns ) ; return ERR_CAST ( new ) ; } new_ns -> root = new ; br_write_lock ( & vfsmount_lock ) ; list_add_tail ( & new_ns -> list , & new -> mnt_list ) ; br_write_unlock ( & vfsmount_lock ) ; p = old ; q = new ; while ( p ) { q -> mnt_ns = new_ns ; if ( fs ) { if ( & p -> mnt == fs -> root . mnt ) { fs -> root . mnt = mntget ( & q -> mnt ) ; rootmnt = & p -> mnt ; } if ( & p -> mnt == fs -> pwd . mnt ) { fs -> pwd . mnt = mntget ( & q -> mnt ) ; pwdmnt = & p -> mnt ; } } p = next_mnt ( p , old ) ; q = next_mnt ( q , new ) ; } up_write ( & namespace_sem ) ; if ( rootmnt ) mntput ( rootmnt ) ; if ( pwdmnt ) mntput ( pwdmnt ) ; return new_ns ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> copy_flags |= CL_SHARED_TO_SLAVE | CL_UNPRIVILEGED\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2119\n\n```\nCWE-119 static int zerocopy_sg_from_iovec ( struct sk_buff * skb , const struct iovec * from , int offset , size_t count ) { int len = iov_length ( from , count ) - offset ; int copy = skb_headlen ( skb ) ; int size , offset1 = 0 ; int i = 0 ; while ( count && ( offset >= from -> iov_len ) ) { offset -= from -> iov_len ; ++ from ; -- count ; } while ( count && ( copy > 0 ) ) { size = min_t ( unsigned int , copy , from -> iov_len - offset ) ; if ( copy_from_user ( skb -> data + offset1 , from -> iov_base + offset , size ) ) return - EFAULT ; if ( copy > size ) { ++ from ; -- count ; offset = 0 ; } else offset += size ; copy -= size ; offset1 += size ; } if ( len == offset1 ) return 0 ; while ( count -- ) { struct page * page [ MAX_SKB_FRAGS ] ; int num_pages ; unsigned long base ; unsigned long truesize ; len = from -> iov_len - offset ; if ( ! len ) { offset = 0 ; ++ from ; continue ; } base = ( unsigned long ) from -> iov_base + offset ; size = ( ( base & ~ PAGE_MASK ) + len + ~ PAGE_MASK ) >> PAGE_SHIFT ; <S2SV_StartBug> num_pages = get_user_pages_fast ( base , size , 0 , & page [ i ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( num_pages != size ) || <S2SV_EndBug> ( num_pages > MAX_SKB_FRAGS - skb_shinfo ( skb ) -> nr_frags ) ) { for ( i = 0 ; i < num_pages ; i ++ ) put_page ( page [ i ] ) ; return - EFAULT ; } truesize = size * PAGE_SIZE ; skb -> data_len += len ; skb -> len += len ; skb -> truesize += truesize ; atomic_add ( truesize , & skb -> sk -> sk_wmem_alloc ) ; while ( len ) { int off = base & ~ PAGE_MASK ; int size = min_t ( int , len , PAGE_SIZE - off ) ; __skb_fill_page_desc ( skb , i , page [ i ] , off , size ) ; skb_shinfo ( skb ) -> nr_frags ++ ; base += size ; len -= size ; i ++ ; } offset = 0 ; ++ from ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> >> PAGE_SHIFT ; if ( i + size > MAX_SKB_FRAGS ) return - EMSGSIZE ; <S2SV_ModStart> ; if ( <S2SV_ModEnd> num_pages != size <S2SV_ModStart> num_pages != size <S2SV_ModEnd> ) { for\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7863\n\n```\nCWE-787 static int decode_frame_common ( AVCodecContext * avctx , PNGDecContext * s , AVFrame * p , AVPacket * avpkt ) { AVDictionary * metadata = NULL ; uint32_t tag , length ; int decode_next_dat = 0 ; int ret ; for ( ; ; ) { length = bytestream2_get_bytes_left ( & s -> gb ) ; if ( length <= 0 ) { if ( avctx -> codec_id == AV_CODEC_ID_PNG && avctx -> skip_frame == AVDISCARD_ALL ) { av_frame_set_metadata ( p , metadata ) ; return 0 ; } if ( CONFIG_APNG_DECODER && avctx -> codec_id == AV_CODEC_ID_APNG && length == 0 ) { if ( ! ( s -> state & PNG_IDAT ) ) return 0 ; else goto exit_loop ; } av_log ( avctx , AV_LOG_ERROR , \"%d<S2SV_blank>bytes<S2SV_blank>left\\\\n\" , length ) ; if ( s -> state & PNG_ALLIMAGE && avctx -> strict_std_compliance <= FF_COMPLIANCE_NORMAL ) goto exit_loop ; ret = AVERROR_INVALIDDATA ; goto fail ; } length = bytestream2_get_be32 ( & s -> gb ) ; if ( length > 0x7fffffff || length > bytestream2_get_bytes_left ( & s -> gb ) ) { av_log ( avctx , AV_LOG_ERROR , \"chunk<S2SV_blank>too<S2SV_blank>big\\\\n\" ) ; ret = AVERROR_INVALIDDATA ; goto fail ; } tag = bytestream2_get_le32 ( & s -> gb ) ; if ( avctx -> debug & FF_DEBUG_STARTCODE ) av_log ( avctx , AV_LOG_DEBUG , \"png:<S2SV_blank>tag=%c%c%c%c<S2SV_blank>length=%u\\\\n\" , ( tag & 0xff ) , ( ( tag >> 8 ) & 0xff ) , ( ( tag >> 16 ) & 0xff ) , ( ( tag >> 24 ) & 0xff ) , length ) ; if ( avctx -> codec_id == AV_CODEC_ID_PNG && avctx -> skip_frame == AVDISCARD_ALL ) { switch ( tag ) { case MKTAG ( 'I' , 'H' , 'D' , 'R' ) : case MKTAG ( 'p' , 'H' , 'Y' , 's' ) : case MKTAG ( 't' , 'E' , 'X' , 't' ) : case MKTAG ( 'I' , 'D' , 'A' , 'T' ) : case MKTAG ( 't' , 'R' , 'N' , 'S' ) : break ; default : goto skip_tag ; } } switch ( tag ) { case MKTAG ( 'I' , 'H' , 'D' , 'R' ) : if ( ( ret = decode_ihdr_chunk ( avctx , s , length ) ) < 0 ) goto fail ; break ; case MKTAG ( 'p' , 'H' , 'Y' , 's' ) : if ( ( ret = decode_phys_chunk ( avctx , s ) ) < 0 ) goto fail ; break ; case MKTAG ( 'f' , 'c' , 'T' , 'L' ) : if ( ! CONFIG_APNG_DECODER || avctx -> codec_id != AV_CODEC_ID_APNG ) goto skip_tag ; if ( ( ret = decode_fctl_chunk ( avctx , s , length ) ) < 0 ) goto fail ; decode_next_dat = 1 ; break ; case MKTAG ( 'f' , 'd' , 'A' , 'T' ) : if ( ! CONFIG_APNG_DECODER || avctx -> codec_id != AV_CODEC_ID_APNG ) goto skip_tag ; if ( ! decode_next_dat ) { ret = AVERROR_INVALIDDATA ; goto fail ; } bytestream2_get_be32 ( & s -> gb ) ; length -= 4 ; case MKTAG ( 'I' , 'D' , 'A' , 'T' ) : if ( CONFIG_APNG_DECODER && avctx -> codec_id == AV_CODEC_ID_APNG && ! decode_next_dat ) goto skip_tag ; if ( ( ret = decode_idat_chunk ( avctx , s , length , p ) ) < 0 ) goto fail ; break ; case MKTAG ( 'P' , 'L' , 'T' , 'E' ) : if ( decode_plte_chunk ( avctx , s , length ) < 0 ) goto skip_tag ; break ; case MKTAG ( 't' , 'R' , 'N' , 'S' ) : if ( decode_trns_chunk ( avctx , s , length ) < 0 ) goto skip_tag ; break ; case MKTAG ( 't' , 'E' , 'X' , 't' ) : if ( decode_text_chunk ( s , length , 0 , & metadata ) < 0 ) av_log ( avctx , AV_LOG_WARNING , \"Broken<S2SV_blank>tEXt<S2SV_blank>chunk\\\\n\" ) ; bytestream2_skip ( & s -> gb , length + 4 ) ; break ; case MKTAG ( 'z' , 'T' , 'X' , 't' ) : if ( decode_text_chunk ( s , length , 1 , & metadata ) < 0 ) av_log ( avctx , AV_LOG_WARNING , \"Broken<S2SV_blank>zTXt<S2SV_blank>chunk\\\\n\" ) ; bytestream2_skip ( & s -> gb , length + 4 ) ; break ; case MKTAG ( 's' , 'T' , 'E' , 'R' ) : { int mode = bytestream2_get_byte ( & s -> gb ) ; AVStereo3D * stereo3d = av_stereo3d_create_side_data ( p ) ; if ( ! stereo3d ) goto fail ; if ( mode == 0 || mode == 1 ) { stereo3d -> type = AV_STEREO3D_SIDEBYSIDE ; stereo3d -> flags = mode ? 0 : AV_STEREO3D_FLAG_INVERT ; } else { av_log ( avctx , AV_LOG_WARNING , \"Unknown<S2SV_blank>value<S2SV_blank>in<S2SV_blank>sTER<S2SV_blank>chunk<S2SV_blank>(%d)\\\\n\" , mode ) ; } bytestream2_skip ( & s -> gb , 4 ) ; break ; } case MKTAG ( 'I' , 'E' , 'N' , 'D' ) : if ( ! ( s -> state & PNG_ALLIMAGE ) ) av_log ( avctx , AV_LOG_ERROR , \"IEND<S2SV_blank>without<S2SV_blank>all<S2SV_blank>image\\\\n\" ) ; if ( ! ( s -> state & ( PNG_ALLIMAGE | PNG_IDAT ) ) ) { ret = AVERROR_INVALIDDATA ; goto fail ; } bytestream2_skip ( & s -> gb , 4 ) ; goto exit_loop ; default : skip_tag : bytestream2_skip ( & s -> gb , length + 4 ) ; break ; } } exit_loop : if ( avctx -> codec_id == AV_CODEC_ID_PNG && avctx -> skip_frame == AVDISCARD_ALL ) { av_frame_set_metadata ( p , metadata ) ; return 0 ; } if ( s -> bits_per_pixel <= 4 ) handle_small_bpp ( s , p ) ; if ( s -> has_trns && s -> color_type != PNG_COLOR_TYPE_PALETTE ) { size_t byte_depth = s -> bit_depth > 8 ? 2 : 1 ; size_t raw_bpp = s -> bpp - byte_depth ; unsigned x , y ; <S2SV_StartBug> for ( y = 0 ; y < s -> height ; ++ y ) { <S2SV_EndBug> uint8_t * row = & s -> image_buf [ s -> image_linesize * y ] ; for ( x = s -> width ; x > 0 ; -- x ) { uint8_t * pixel = & row [ s -> bpp * ( x - 1 ) ] ; memmove ( pixel , & row [ raw_bpp * ( x - 1 ) ] , raw_bpp ) ; if ( ! memcmp ( pixel , s -> transparent_color_be , raw_bpp ) ) { memset ( & pixel [ raw_bpp ] , 0 , byte_depth ) ; } else { memset ( & pixel [ raw_bpp ] , 0xff , byte_depth ) ; } } } } if ( s -> last_picture . f -> data [ 0 ] ) { if ( ! ( avpkt -> flags & AV_PKT_FLAG_KEY ) && avctx -> codec_tag != AV_RL32 ( \"MPNG\" ) && s -> last_picture . f -> width == p -> width && s -> last_picture . f -> height == p -> height && s -> last_picture . f -> format == p -> format ) { if ( CONFIG_PNG_DECODER && avctx -> codec_id != AV_CODEC_ID_APNG ) handle_p_frame_png ( s , p ) ; else if ( CONFIG_APNG_DECODER && avctx -> codec_id == AV_CODEC_ID_APNG && ( ret = handle_p_frame_apng ( avctx , s , p ) ) < 0 ) goto fail ; } } ff_thread_report_progress ( & s -> picture , INT_MAX , 0 ) ; ff_thread_report_progress ( & s -> previous_picture , INT_MAX , 0 ) ; av_frame_set_metadata ( p , metadata ) ; metadata = NULL ; return 0 ; fail : av_dict_free ( & metadata ) ; ff_thread_report_progress ( & s -> picture , INT_MAX , 0 ) ; ff_thread_report_progress ( & s -> previous_picture , INT_MAX , 0 ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , y ; av_assert0 ( s -> bit_depth > 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010295\n\n```\nCWE-119 <S2SV_StartBug> static void utee_param_to_param ( struct tee_ta_param * p , struct utee_params * up ) <S2SV_EndBug> { size_t n ; uint32_t types = up -> types ; p -> types = types ; for ( n = 0 ; n < TEE_NUM_PARAMS ; n ++ ) { uintptr_t a = up -> vals [ n * 2 ] ; size_t b = up -> vals [ n * 2 + 1 ] ; <S2SV_StartBug> switch ( TEE_PARAM_TYPE_GET ( types , n ) ) { <S2SV_EndBug> <S2SV_StartBug> case TEE_PARAM_TYPE_MEMREF_INPUT : <S2SV_EndBug> case TEE_PARAM_TYPE_MEMREF_OUTPUT : case TEE_PARAM_TYPE_MEMREF_INOUT : p -> u [ n ] . mem . mobj = & mobj_virt ; p -> u [ n ] . mem . offs = a ; p -> u [ n ] . mem . size = b ; <S2SV_StartBug> break ; <S2SV_EndBug> case TEE_PARAM_TYPE_VALUE_INPUT : case TEE_PARAM_TYPE_VALUE_INOUT : p -> u [ n ] . val . a = a ; p -> u [ n ] . val . b = b ; break ; default : memset ( & p -> u [ n ] , 0 , sizeof ( p -> u [ n ] ) ) ; break ; } <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static TEE_Result utee_param_to_param ( struct user_ta_ctx * utc , <S2SV_ModEnd> struct tee_ta_param * <S2SV_ModStart> 1 ] ; uint32_t flags = TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER ; <S2SV_ModStart> ) { case TEE_PARAM_TYPE_MEMREF_OUTPUT : case TEE_PARAM_TYPE_MEMREF_INOUT : flags |= TEE_MEMORY_ACCESS_WRITE ; case TEE_PARAM_TYPE_MEMREF_INPUT <S2SV_ModEnd> : p -> <S2SV_ModStart> = b ; if ( tee_mmu_check_access_rights ( utc , flags , a , b ) ) return TEE_ERROR_ACCESS_DENIED ; <S2SV_ModStart> ; } } return TEE_SUCCESS ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6353\n\n```\nCWE-415 static int sctp_wait_for_sndbuf ( struct sctp_association * asoc , long * timeo_p , size_t msg_len ) { struct sock * sk = asoc -> base . sk ; int err = 0 ; long current_timeo = * timeo_p ; DEFINE_WAIT ( wait ) ; pr_debug ( \"%s:<S2SV_blank>asoc:%p,<S2SV_blank>timeo:%ld,<S2SV_blank>msg_len:%zu\\\\n\" , __func__ , asoc , * timeo_p , msg_len ) ; sctp_association_hold ( asoc ) ; for ( ; ; ) { prepare_to_wait_exclusive ( & asoc -> wait , & wait , TASK_INTERRUPTIBLE ) ; if ( ! * timeo_p ) goto do_nonblock ; if ( sk -> sk_err || asoc -> state >= SCTP_STATE_SHUTDOWN_PENDING || asoc -> base . dead ) goto do_error ; if ( signal_pending ( current ) ) goto do_interrupted ; if ( msg_len <= sctp_wspace ( asoc ) ) break ; release_sock ( sk ) ; current_timeo = schedule_timeout ( current_timeo ) ; <S2SV_StartBug> if ( sk != asoc -> base . sk ) <S2SV_EndBug> goto do_error ; lock_sock ( sk ) ; * timeo_p = current_timeo ; } out : finish_wait ( & asoc -> wait , & wait ) ; sctp_association_put ( asoc ) ; return err ; do_error : err = - EPIPE ; goto out ; do_interrupted : err = sock_intr_errno ( * timeo_p ) ; goto out ; do_nonblock : err = - EAGAIN ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_timeo ) ; <S2SV_ModEnd> lock_sock ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12713\n\n```\nCWE-20 static void gimp_write_and_read_file ( Gimp * gimp , gboolean with_unusual_stuff , gboolean compat_paths , gboolean use_gimp_2_8_features ) { GimpImage * image ; GimpImage * loaded_image ; GimpPlugInProcedure * proc ; <S2SV_StartBug> gchar * filename ; <S2SV_EndBug> GFile * file ; image = gimp_create_mainimage ( gimp , with_unusual_stuff , compat_paths , use_gimp_2_8_features ) ; gimp_assert_mainimage ( image , with_unusual_stuff , compat_paths , use_gimp_2_8_features ) ; <S2SV_StartBug> filename = g_build_filename ( g_get_tmp_dir ( ) , \"gimp-test.xcf\" , NULL ) ; <S2SV_EndBug> file = g_file_new_for_path ( filename ) ; g_free ( filename ) ; proc = gimp_plug_in_manager_file_procedure_find ( image -> gimp -> plug_in_manager , GIMP_FILE_PROCEDURE_GROUP_SAVE , file , NULL ) ; file_save ( gimp , image , NULL , file , proc , GIMP_RUN_NONINTERACTIVE , FALSE , FALSE , FALSE , NULL ) ; loaded_image = gimp_test_load_image ( image -> gimp , file ) ; gimp_assert_mainimage ( loaded_image , with_unusual_stuff , compat_paths , use_gimp_2_8_features ) ; g_file_delete ( file , NULL , NULL ) ; g_object_unref ( file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gchar * filename = NULL ; gint file_handle <S2SV_ModStart> use_gimp_2_8_features ) ; file_handle = g_file_open_tmp ( \"gimp-test-XXXXXX.xcf\" , & filename , NULL ) ; g_assert ( file_handle != - 1 ) ; close ( file_handle <S2SV_ModEnd> ) ; file\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10507\n\n```\nCWE-190 opj_image_t * bmptoimage ( const char * filename , opj_cparameters_t * parameters ) { opj_image_cmptparm_t cmptparm [ 4 ] ; OPJ_UINT8 lut_R [ 256 ] , lut_G [ 256 ] , lut_B [ 256 ] ; OPJ_UINT8 const * pLUT [ 3 ] ; opj_image_t * image = NULL ; FILE * IN ; OPJ_BITMAPFILEHEADER File_h ; OPJ_BITMAPINFOHEADER Info_h ; OPJ_UINT32 i , palette_len , numcmpts = 1U ; OPJ_BOOL l_result = OPJ_FALSE ; OPJ_UINT8 * pData = NULL ; OPJ_UINT32 stride ; pLUT [ 0 ] = lut_R ; pLUT [ 1 ] = lut_G ; pLUT [ 2 ] = lut_B ; IN = fopen ( filename , \"rb\" ) ; if ( ! IN ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading<S2SV_blank>!!\\\\n\" , filename ) ; return NULL ; } if ( ! bmp_read_file_header ( IN , & File_h ) ) { fclose ( IN ) ; return NULL ; } if ( ! bmp_read_info_header ( IN , & Info_h ) ) { fclose ( IN ) ; return NULL ; } if ( Info_h . biBitCount <= 8U ) { memset ( & lut_R [ 0 ] , 0 , sizeof ( lut_R ) ) ; memset ( & lut_G [ 0 ] , 0 , sizeof ( lut_G ) ) ; memset ( & lut_B [ 0 ] , 0 , sizeof ( lut_B ) ) ; palette_len = Info_h . biClrUsed ; if ( ( palette_len == 0U ) && ( Info_h . biBitCount <= 8U ) ) { palette_len = ( 1U << Info_h . biBitCount ) ; } if ( palette_len > 256U ) { palette_len = 256U ; } if ( palette_len > 0U ) { OPJ_UINT8 has_color = 0U ; for ( i = 0U ; i < palette_len ; i ++ ) { lut_B [ i ] = ( OPJ_UINT8 ) getc ( IN ) ; lut_G [ i ] = ( OPJ_UINT8 ) getc ( IN ) ; lut_R [ i ] = ( OPJ_UINT8 ) getc ( IN ) ; ( void ) getc ( IN ) ; has_color |= ( lut_B [ i ] ^ lut_G [ i ] ) | ( lut_G [ i ] ^ lut_R [ i ] ) ; } if ( has_color ) { numcmpts = 3U ; } } } else { numcmpts = 3U ; if ( ( Info_h . biCompression == 3 ) && ( Info_h . biAlphaMask != 0U ) ) { numcmpts ++ ; } } <S2SV_StartBug> stride = ( ( Info_h . biWidth * Info_h . biBitCount + 31U ) / 32U ) * 4U ; <S2SV_EndBug> <S2SV_StartBug> if ( Info_h . biBitCount == 4 && Info_h . biCompression == 2 ) { <S2SV_EndBug> stride = ( ( Info_h . biWidth * 8U + 31U ) / 32U ) * 4U ; } <S2SV_StartBug> pData = ( OPJ_UINT8 * ) calloc ( 1 , stride * Info_h . biHeight * sizeof ( OPJ_UINT8 ) ) ; <S2SV_EndBug> if ( pData == NULL ) { fclose ( IN ) ; return NULL ; } fseek ( IN , 0 , SEEK_SET ) ; fseek ( IN , ( long ) File_h . bfOffBits , SEEK_SET ) ; switch ( Info_h . biCompression ) { case 0 : case 3 : l_result = bmp_read_raw_data ( IN , pData , stride , Info_h . biWidth , Info_h . biHeight ) ; break ; case 1 : l_result = bmp_read_rle8_data ( IN , pData , stride , Info_h . biWidth , Info_h . biHeight ) ; break ; case 2 : l_result = bmp_read_rle4_data ( IN , pData , stride , Info_h . biWidth , Info_h . biHeight ) ; break ; default : fprintf ( stderr , \"Unsupported<S2SV_blank>BMP<S2SV_blank>compression\\\\n\" ) ; l_result = OPJ_FALSE ; break ; } if ( ! l_result ) { free ( pData ) ; fclose ( IN ) ; return NULL ; } memset ( & cmptparm [ 0 ] , 0 , sizeof ( cmptparm ) ) ; for ( i = 0 ; i < 4U ; i ++ ) { cmptparm [ i ] . prec = 8 ; cmptparm [ i ] . bpp = 8 ; cmptparm [ i ] . sgnd = 0 ; cmptparm [ i ] . dx = ( OPJ_UINT32 ) parameters -> subsampling_dx ; cmptparm [ i ] . dy = ( OPJ_UINT32 ) parameters -> subsampling_dy ; cmptparm [ i ] . w = Info_h . biWidth ; cmptparm [ i ] . h = Info_h . biHeight ; } image = opj_image_create ( numcmpts , & cmptparm [ 0 ] , ( numcmpts == 1U ) ? OPJ_CLRSPC_GRAY : OPJ_CLRSPC_SRGB ) ; if ( ! image ) { fclose ( IN ) ; free ( pData ) ; return NULL ; } if ( numcmpts == 4U ) { image -> comps [ 3 ] . alpha = 1 ; } image -> x0 = ( OPJ_UINT32 ) parameters -> image_offset_x0 ; image -> y0 = ( OPJ_UINT32 ) parameters -> image_offset_y0 ; image -> x1 = image -> x0 + ( Info_h . biWidth - 1U ) * ( OPJ_UINT32 ) parameters -> subsampling_dx + 1U ; image -> y1 = image -> y0 + ( Info_h . biHeight - 1U ) * ( OPJ_UINT32 ) parameters -> subsampling_dy + 1U ; if ( Info_h . biBitCount == 24 && Info_h . biCompression == 0 ) { bmp24toimage ( pData , stride , image ) ; } else if ( Info_h . biBitCount == 8 && Info_h . biCompression == 0 ) { bmp8toimage ( pData , stride , image , pLUT ) ; } else if ( Info_h . biBitCount == 8 && Info_h . biCompression == 1 ) { bmp8toimage ( pData , stride , image , pLUT ) ; } else if ( Info_h . biBitCount == 4 && Info_h . biCompression == 2 ) { bmp8toimage ( pData , stride , image , pLUT ) ; } else if ( Info_h . biBitCount == 32 && Info_h . biCompression == 0 ) { bmpmask32toimage ( pData , stride , image , 0x00FF0000U , 0x0000FF00U , 0x000000FFU , 0x00000000U ) ; } else if ( Info_h . biBitCount == 32 && Info_h . biCompression == 3 ) { bmpmask32toimage ( pData , stride , image , Info_h . biRedMask , Info_h . biGreenMask , Info_h . biBlueMask , Info_h . biAlphaMask ) ; } else if ( Info_h . biBitCount == 16 && Info_h . biCompression == 0 ) { bmpmask16toimage ( pData , stride , image , 0x7C00U , 0x03E0U , 0x001FU , 0x0000U ) ; } else if ( Info_h . biBitCount == 16 && Info_h . biCompression == 3 ) { if ( ( Info_h . biRedMask == 0U ) && ( Info_h . biGreenMask == 0U ) && ( Info_h . biBlueMask == 0U ) ) { Info_h . biRedMask = 0xF800U ; Info_h . biGreenMask = 0x07E0U ; Info_h . biBlueMask = 0x001FU ; } bmpmask16toimage ( pData , stride , image , Info_h . biRedMask , Info_h . biGreenMask , Info_h . biBlueMask , Info_h . biAlphaMask ) ; } else { opj_image_destroy ( image ) ; image = NULL ; fprintf ( stderr , \"Other<S2SV_blank>system<S2SV_blank>than<S2SV_blank>24<S2SV_blank>bits/pixels<S2SV_blank>or<S2SV_blank>8<S2SV_blank>bits<S2SV_blank>(no<S2SV_blank>RLE<S2SV_blank>coding)<S2SV_blank>is<S2SV_blank>not<S2SV_blank>yet<S2SV_blank>implemented<S2SV_blank>[%d]\\\\n\" , Info_h . biBitCount ) ; } free ( pData ) ; fclose ( IN ) ; return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( Info_h . biWidth == 0 || Info_h . biHeight == 0 ) { fclose ( IN ) ; return NULL ; } if ( Info_h . biBitCount > ( ( ( OPJ_UINT32 ) - 1 ) - 31 ) / Info_h . biWidth ) { fclose ( IN ) ; return NULL ; } <S2SV_ModStart> 2 ) { if ( 8 > ( ( ( OPJ_UINT32 ) - 1 ) - 31 ) / Info_h . biWidth ) { fclose ( IN ) ; return NULL ; } <S2SV_ModStart> 4U ; } if ( stride > ( ( OPJ_UINT32 ) - 1 ) / sizeof ( OPJ_UINT8 ) / Info_h . biHeight ) { fclose ( IN ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3288\n\n```\nCWE-20 static int do_fault ( struct mm_struct * mm , struct vm_area_struct * vma , unsigned long address , pte_t * page_table , pmd_t * pmd , unsigned int flags , pte_t orig_pte ) { pgoff_t pgoff = ( ( ( address & PAGE_MASK ) - vma -> vm_start ) >> PAGE_SHIFT ) + vma -> vm_pgoff ; <S2SV_StartBug> pte_unmap ( page_table ) ; <S2SV_EndBug> if ( ! ( flags & FAULT_FLAG_WRITE ) ) return do_read_fault ( mm , vma , address , pmd , pgoff , flags , orig_pte ) ; if ( ! ( vma -> vm_flags & VM_SHARED ) ) return do_cow_fault ( mm , vma , address , pmd , pgoff , flags , orig_pte ) ; return do_shared_fault ( mm , vma , address , pmd , pgoff , flags , orig_pte ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( page_table ) ; if ( ! vma -> vm_ops -> fault ) return VM_FAULT_SIGBUS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> struct nfs_open_context * nfs_find_open_context ( struct inode * inode , struct rpc_cred * cred , int mode ) <S2SV_EndBug> { struct nfs_inode * nfsi = NFS_I ( inode ) ; struct nfs_open_context * pos , * ctx = NULL ; spin_lock ( & inode -> i_lock ) ; list_for_each_entry ( pos , & nfsi -> open_files , list ) { if ( cred != NULL && pos -> cred != cred ) continue ; if ( ( pos -> mode & mode ) == mode ) { ctx = get_nfs_open_context ( pos ) ; break ; } } spin_unlock ( & inode -> i_lock ) ; return ctx ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cred , fmode_t <S2SV_ModEnd> mode ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15785\n\n```\nCWE-119 static int sd_e_h ( GWindow gw , GEvent * event ) { struct sd_data * sd = GDrawGetUserData ( gw ) ; if ( sd == NULL ) return ( true ) ; if ( event -> type == et_close ) { SD_DoCancel ( sd ) ; <S2SV_StartBug> } else if ( event -> type == et_char ) { <S2SV_EndBug> if ( event -> u . chr . keysym == GK_F1 || event -> u . chr . keysym == GK_Help ) { help ( \"scripting.html\" ) ; return ( true ) ; } return ( false ) ; } else if ( event -> type == et_map ) GDrawRaise ( gw ) ; else if ( event -> type == et_resize ) GDrawRequestExpose ( gw , NULL , false ) ; return ( true ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> type == et_controlevent && event -> u . control . subtype == et_textchanged ) { sd -> fv -> script_unsaved = ! GTextFieldIsEmpty ( GWidgetGetControl ( sd -> gw , CID_Script ) ) ; } else if ( event -> type == et_controlevent && event -> u . control . subtype == et_save ) { sd -> fv -> script_unsaved = false ; } else if ( event -> type ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9388\n\n```\nCWE-000 static int ras_putdatastd ( jas_stream_t * out , ras_hdr_t * hdr , jas_image_t * image , int numcmpts , int * cmpts ) { int rowsize ; int pad ; unsigned int z ; int nz ; int c ; int x ; int y ; int v ; jas_matrix_t * data [ 3 ] ; int i ; <S2SV_StartBug> for ( i = 0 ; i < numcmpts ; ++ i ) { <S2SV_EndBug> <S2SV_StartBug> data [ i ] = jas_matrix_create ( jas_image_height ( image ) , jas_image_width ( image ) ) ; <S2SV_EndBug> assert ( data [ i ] ) ; } rowsize = RAS_ROWSIZE ( hdr ) ; pad = rowsize - ( hdr -> width * hdr -> depth + 7 ) / 8 ; hdr -> length = hdr -> height * rowsize ; for ( y = 0 ; y < hdr -> height ; y ++ ) { for ( i = 0 ; i < numcmpts ; ++ i ) { if ( jas_image_readcmpt ( image , cmpts [ i ] , 0 , y , jas_image_width ( image ) , 1 , data [ i ] ) ) { <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } } z = 0 ; nz = 0 ; for ( x = 0 ; x < hdr -> width ; x ++ ) { z <<= hdr -> depth ; if ( RAS_ISRGB ( hdr ) ) { v = RAS_RED ( ( jas_matrix_getv ( data [ 0 ] , x ) ) ) | RAS_GREEN ( ( jas_matrix_getv ( data [ 1 ] , x ) ) ) | RAS_BLUE ( ( jas_matrix_getv ( data [ 2 ] , x ) ) ) ; } else { v = ( jas_matrix_getv ( data [ 0 ] , x ) ) ; } z |= v & RAS_ONES ( hdr -> depth ) ; nz += hdr -> depth ; while ( nz >= 8 ) { c = ( z >> ( nz - 8 ) ) & 0xff ; if ( jas_stream_putc ( out , c ) == EOF ) { <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } <S2SV_StartBug> nz -= 8 ; <S2SV_EndBug> z &= RAS_ONES ( nz ) ; } } if ( nz > 0 ) { c = ( z >> ( 8 - nz ) ) & RAS_ONES ( nz ) ; if ( jas_stream_putc ( out , c ) == EOF ) { return - 1 ; } } if ( pad % 2 ) { if ( jas_stream_putc ( out , 0 ) == EOF ) { return - 1 ; } } } for ( i = 0 ; i < numcmpts ; ++ i ) { jas_matrix_destroy ( data [ i ] ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; assert ( numcmpts <= 3 ) ; for ( i = 0 ; i < 3 ; ++ i ) { data [ i ] = 0 ; } <S2SV_ModStart> i ) { if ( ! ( <S2SV_ModStart> image ) ) ) ) { goto error ; } <S2SV_ModEnd> } rowsize = <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } } <S2SV_ModStart> EOF ) { goto error ; } nz -= 8 ; z &= RAS_ONES ( nz ) ; } } if ( nz > 0 ) { c = ( z >> ( 8 - nz ) ) & RAS_ONES ( nz ) ; if ( jas_stream_putc ( out , c ) == EOF ) { goto error ; } } if ( pad % 2 ) { if ( jas_stream_putc ( out , 0 ) == EOF ) { goto error ; } } } for ( i = 0 ; i < numcmpts ; ++ i ) { jas_matrix_destroy ( data [ i ] ) ; data [ i ] = 0 ; } return 0 ; error : for ( i = 0 ; i < numcmpts ; ++ i ) { if ( data [ i ] ) { jas_matrix_destroy ( data [ i ] ) ; } } <S2SV_ModStart> 1 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4503\n\n```\nCWE-20 static bool parse_notify ( struct pool * pool , json_t * val ) { char * job_id , * prev_hash , * coinbase1 , * coinbase2 , * bbversion , * nbit , * ntime , * header ; size_t cb1_len , cb2_len , alloc_len ; unsigned char * cb1 , * cb2 ; bool clean , ret = false ; int merkles , i ; json_t * arr ; arr = json_array_get ( val , 4 ) ; if ( ! arr || ! json_is_array ( arr ) ) goto out ; merkles = json_array_size ( arr ) ; job_id = json_array_string ( val , 0 ) ; prev_hash = json_array_string ( val , 1 ) ; coinbase1 = json_array_string ( val , 2 ) ; coinbase2 = json_array_string ( val , 3 ) ; bbversion = json_array_string ( val , 5 ) ; nbit = json_array_string ( val , 6 ) ; ntime = json_array_string ( val , 7 ) ; clean = json_is_true ( json_array_get ( val , 8 ) ) ; if ( ! job_id || ! prev_hash || ! coinbase1 || ! coinbase2 || ! bbversion || ! nbit || ! ntime ) { if ( job_id ) free ( job_id ) ; if ( prev_hash ) free ( prev_hash ) ; if ( coinbase1 ) free ( coinbase1 ) ; if ( coinbase2 ) free ( coinbase2 ) ; if ( bbversion ) free ( bbversion ) ; if ( nbit ) free ( nbit ) ; if ( ntime ) free ( ntime ) ; goto out ; } cg_wlock ( & pool -> data_lock ) ; free ( pool -> swork . job_id ) ; free ( pool -> swork . prev_hash ) ; free ( pool -> swork . bbversion ) ; free ( pool -> swork . nbit ) ; free ( pool -> swork . ntime ) ; pool -> swork . job_id = job_id ; pool -> swork . prev_hash = prev_hash ; cb1_len = strlen ( coinbase1 ) / 2 ; cb2_len = strlen ( coinbase2 ) / 2 ; pool -> swork . bbversion = bbversion ; pool -> swork . nbit = nbit ; pool -> swork . ntime = ntime ; pool -> swork . clean = clean ; alloc_len = pool -> swork . cb_len = cb1_len + pool -> n1_len + pool -> n2size + cb2_len ; pool -> nonce2_offset = cb1_len + pool -> n1_len ; for ( i = 0 ; i < pool -> swork . merkles ; i ++ ) free ( pool -> swork . merkle_bin [ i ] ) ; if ( merkles ) { pool -> swork . merkle_bin = ( unsigned char * * ) realloc ( pool -> swork . merkle_bin , sizeof ( char * ) * merkles + 1 ) ; for ( i = 0 ; i < merkles ; i ++ ) { char * merkle = json_array_string ( arr , i ) ; pool -> swork . merkle_bin [ i ] = ( unsigned char * ) malloc ( 32 ) ; if ( unlikely ( ! pool -> swork . merkle_bin [ i ] ) ) quit ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>malloc<S2SV_blank>pool<S2SV_blank>swork<S2SV_blank>merkle_bin\" ) ; hex2bin ( pool -> swork . merkle_bin [ i ] , merkle , 32 ) ; free ( merkle ) ; } } pool -> swork . merkles = merkles ; if ( clean ) pool -> nonce2 = 0 ; pool -> merkle_offset = strlen ( pool -> swork . bbversion ) + strlen ( pool -> swork . prev_hash ) ; pool -> swork . header_len = pool -> merkle_offset + 32 + strlen ( pool -> swork . ntime ) + strlen ( pool -> swork . nbit ) + 8 + 96 ; pool -> merkle_offset /= 2 ; pool -> swork . header_len = pool -> swork . header_len * 2 + 1 ; align_len ( & pool -> swork . header_len ) ; header = ( char * ) alloca ( pool -> swork . header_len ) ; snprintf ( header , pool -> swork . header_len , \"%s%s%s%s%s%s%s\" , pool -> swork . bbversion , pool -> swork . prev_hash , blank_merkel , pool -> swork . ntime , pool -> swork . nbit , \"00000000\" , workpadding ) ; if ( unlikely ( ! hex2bin ( pool -> header_bin , header , 128 ) ) ) <S2SV_StartBug> quit ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>header<S2SV_blank>to<S2SV_blank>header_bin<S2SV_blank>in<S2SV_blank>parse_notify\" ) ; <S2SV_EndBug> cb1 = ( unsigned char * ) calloc ( cb1_len , 1 ) ; if ( unlikely ( ! cb1 ) ) quithere ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>cb1<S2SV_blank>in<S2SV_blank>parse_notify\" ) ; hex2bin ( cb1 , coinbase1 , cb1_len ) ; cb2 = ( unsigned char * ) calloc ( cb2_len , 1 ) ; if ( unlikely ( ! cb2 ) ) quithere ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>cb2<S2SV_blank>in<S2SV_blank>parse_notify\" ) ; hex2bin ( cb2 , coinbase2 , cb2_len ) ; free ( pool -> coinbase ) ; align_len ( & alloc_len ) ; pool -> coinbase = ( unsigned char * ) calloc ( alloc_len , 1 ) ; if ( unlikely ( ! pool -> coinbase ) ) quit ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>pool<S2SV_blank>coinbase<S2SV_blank>in<S2SV_blank>parse_notify\" ) ; memcpy ( pool -> coinbase , cb1 , cb1_len ) ; memcpy ( pool -> coinbase + cb1_len , pool -> nonce1bin , pool -> n1_len ) ; memcpy ( pool -> coinbase + cb1_len + pool -> n1_len + pool -> n2size , cb2 , cb2_len ) ; cg_wunlock ( & pool -> data_lock ) ; if ( opt_protocol ) { applog ( LOG_DEBUG , \"job_id:<S2SV_blank>%s\" , job_id ) ; applog ( LOG_DEBUG , \"prev_hash:<S2SV_blank>%s\" , prev_hash ) ; applog ( LOG_DEBUG , \"coinbase1:<S2SV_blank>%s\" , coinbase1 ) ; applog ( LOG_DEBUG , \"coinbase2:<S2SV_blank>%s\" , coinbase2 ) ; applog ( LOG_DEBUG , \"bbversion:<S2SV_blank>%s\" , bbversion ) ; applog ( LOG_DEBUG , \"nbit:<S2SV_blank>%s\" , nbit ) ; applog ( LOG_DEBUG , \"ntime:<S2SV_blank>%s\" , ntime ) ; applog ( LOG_DEBUG , \"clean:<S2SV_blank>%s\" , clean ? \"yes\" : \"no\" ) ; } free ( coinbase1 ) ; free ( coinbase2 ) ; free ( cb1 ) ; free ( cb2 ) ; pool -> getwork_requested ++ ; total_getworks ++ ; ret = true ; if ( pool == current_pool ( ) ) opt_work_update = true ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ) { applog ( LOG_WARNING , \"%s:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>header<S2SV_blank>to<S2SV_blank>header_bin,<S2SV_blank>got<S2SV_blank>%s\" , __func__ , header ) ; pool_failed ( pool ) ; return false ; } <S2SV_ModEnd> cb1 = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1796\n\n```\nCWE-119 int kvm_set_msr_common ( struct kvm_vcpu * vcpu , struct msr_data * msr_info ) { bool pr = false ; u32 msr = msr_info -> index ; u64 data = msr_info -> data ; switch ( msr ) { case MSR_AMD64_NB_CFG : case MSR_IA32_UCODE_REV : case MSR_IA32_UCODE_WRITE : case MSR_VM_HSAVE_PA : case MSR_AMD64_PATCH_LOADER : case MSR_AMD64_BU_CFG2 : break ; case MSR_EFER : return set_efer ( vcpu , data ) ; case MSR_K7_HWCR : data &= ~ ( u64 ) 0x40 ; data &= ~ ( u64 ) 0x100 ; data &= ~ ( u64 ) 0x8 ; if ( data != 0 ) { vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>HWCR<S2SV_blank>wrmsr:<S2SV_blank>0x%llx\\\\n\" , data ) ; return 1 ; } break ; case MSR_FAM10H_MMIO_CONF_BASE : if ( data != 0 ) { vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>MMIO_CONF_BASE<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%llx\\\\n\" , data ) ; return 1 ; } break ; case MSR_IA32_DEBUGCTLMSR : if ( ! data ) { break ; } else if ( data & ~ ( DEBUGCTLMSR_LBR | DEBUGCTLMSR_BTF ) ) { return 1 ; } vcpu_unimpl ( vcpu , \"%s:<S2SV_blank>MSR_IA32_DEBUGCTLMSR<S2SV_blank>0x%llx,<S2SV_blank>nop\\\\n\" , __func__ , data ) ; break ; case 0x200 ... 0x2ff : return set_msr_mtrr ( vcpu , msr , data ) ; case MSR_IA32_APICBASE : kvm_set_apic_base ( vcpu , data ) ; break ; case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff : return kvm_x2apic_msr_write ( vcpu , msr , data ) ; case MSR_IA32_TSCDEADLINE : kvm_set_lapic_tscdeadline_msr ( vcpu , data ) ; break ; case MSR_IA32_TSC_ADJUST : if ( guest_cpuid_has_tsc_adjust ( vcpu ) ) { if ( ! msr_info -> host_initiated ) { u64 adj = data - vcpu -> arch . ia32_tsc_adjust_msr ; kvm_x86_ops -> adjust_tsc_offset ( vcpu , adj , true ) ; } vcpu -> arch . ia32_tsc_adjust_msr = data ; } break ; case MSR_IA32_MISC_ENABLE : vcpu -> arch . ia32_misc_enable_msr = data ; break ; case MSR_KVM_WALL_CLOCK_NEW : case MSR_KVM_WALL_CLOCK : vcpu -> kvm -> arch . wall_clock = data ; kvm_write_wall_clock ( vcpu -> kvm , data ) ; break ; case MSR_KVM_SYSTEM_TIME_NEW : case MSR_KVM_SYSTEM_TIME : { kvmclock_reset ( vcpu ) ; vcpu -> arch . time = data ; kvm_make_request ( KVM_REQ_CLOCK_UPDATE , vcpu ) ; if ( ! ( data & 1 ) ) break ; <S2SV_StartBug> vcpu -> arch . time_offset = data & ~ ( PAGE_MASK | 1 ) ; <S2SV_EndBug> vcpu -> arch . time_page = gfn_to_page ( vcpu -> kvm , data >> PAGE_SHIFT ) ; if ( is_error_page ( vcpu -> arch . time_page ) ) vcpu -> arch . time_page = NULL ; break ; } case MSR_KVM_ASYNC_PF_EN : if ( kvm_pv_enable_async_pf ( vcpu , data ) ) return 1 ; break ; case MSR_KVM_STEAL_TIME : if ( unlikely ( ! sched_info_on ( ) ) ) return 1 ; if ( data & KVM_STEAL_RESERVED_MASK ) return 1 ; if ( kvm_gfn_to_hva_cache_init ( vcpu -> kvm , & vcpu -> arch . st . stime , data & KVM_STEAL_VALID_BITS ) ) return 1 ; vcpu -> arch . st . msr_val = data ; if ( ! ( data & KVM_MSR_ENABLED ) ) break ; vcpu -> arch . st . last_steal = current -> sched_info . run_delay ; preempt_disable ( ) ; accumulate_steal_time ( vcpu ) ; preempt_enable ( ) ; kvm_make_request ( KVM_REQ_STEAL_UPDATE , vcpu ) ; break ; case MSR_KVM_PV_EOI_EN : if ( kvm_lapic_enable_pv_eoi ( vcpu , data ) ) return 1 ; break ; case MSR_IA32_MCG_CTL : case MSR_IA32_MCG_STATUS : case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1 : return set_msr_mce ( vcpu , msr , data ) ; case MSR_K7_EVNTSEL0 : case MSR_K7_EVNTSEL1 : case MSR_K7_EVNTSEL2 : case MSR_K7_EVNTSEL3 : if ( data != 0 ) vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_K7_PERFCTR0 : case MSR_K7_PERFCTR1 : case MSR_K7_PERFCTR2 : case MSR_K7_PERFCTR3 : vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_P6_PERFCTR0 : case MSR_P6_PERFCTR1 : pr = true ; case MSR_P6_EVNTSEL0 : case MSR_P6_EVNTSEL1 : if ( kvm_pmu_msr ( vcpu , msr ) ) return kvm_pmu_set_msr ( vcpu , msr , data ) ; if ( pr || data != 0 ) vcpu_unimpl ( vcpu , \"disabled<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_K7_CLK_CTL : break ; case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15 : if ( kvm_hv_msr_partition_wide ( msr ) ) { int r ; mutex_lock ( & vcpu -> kvm -> lock ) ; r = set_msr_hyperv_pw ( vcpu , msr , data ) ; mutex_unlock ( & vcpu -> kvm -> lock ) ; return r ; } else return set_msr_hyperv ( vcpu , msr , data ) ; break ; case MSR_IA32_BBL_CR_CTL3 : vcpu_unimpl ( vcpu , \"ignored<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; break ; case MSR_AMD64_OSVW_ID_LENGTH : if ( ! guest_cpuid_has_osvw ( vcpu ) ) return 1 ; vcpu -> arch . osvw . length = data ; break ; case MSR_AMD64_OSVW_STATUS : if ( ! guest_cpuid_has_osvw ( vcpu ) ) return 1 ; vcpu -> arch . osvw . status = data ; break ; default : if ( msr && ( msr == vcpu -> kvm -> arch . xen_hvm_config . msr ) ) return xen_hvm_config ( vcpu , data ) ; if ( kvm_pmu_msr ( vcpu , msr ) ) return kvm_pmu_set_msr ( vcpu , msr , data ) ; if ( ! ignore_msrs ) { vcpu_unimpl ( vcpu , \"unhandled<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; return 1 ; } else { vcpu_unimpl ( vcpu , \"ignored<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> | 1 ) ; if ( vcpu -> arch . time_offset & ( sizeof ( struct pvclock_vcpu_time_info ) - 1 ) ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 jp2_box_t * jp2_box_create ( int type ) { jp2_box_t * box ; jp2_boxinfo_t * boxinfo ; <S2SV_StartBug> if ( ! ( box = jas_malloc ( sizeof ( jp2_box_t ) ) ) ) { <S2SV_EndBug> return 0 ; } <S2SV_StartBug> memset ( box , 0 , sizeof ( jp2_box_t ) ) ; <S2SV_EndBug> box -> type = type ; box -> len = 0 ; if ( ! ( boxinfo = jp2_boxinfolookup ( type ) ) ) { return 0 ; } box -> info = boxinfo ; box -> ops = & boxinfo -> ops ; return box ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( box = jp2_box_create0 ( <S2SV_ModEnd> ) ) ) <S2SV_ModStart> 0 ; } <S2SV_ModEnd> box -> type\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_image_t * img_alloc_helper ( vpx_image_t * img , vpx_img_fmt_t fmt , unsigned int d_w , unsigned int d_h , unsigned int buf_align , unsigned int stride_align , unsigned char * img_data ) { unsigned int h , w , s , xcs , ycs , bps ; <S2SV_StartBug> int align ; <S2SV_EndBug> if ( ! buf_align ) buf_align = 1 ; if ( buf_align & ( buf_align - 1 ) ) goto fail ; if ( ! stride_align ) stride_align = 1 ; if ( stride_align & ( stride_align - 1 ) ) goto fail ; switch ( fmt ) { case VPX_IMG_FMT_RGB32 : case VPX_IMG_FMT_RGB32_LE : case VPX_IMG_FMT_ARGB : case VPX_IMG_FMT_ARGB_LE : bps = 32 ; break ; case VPX_IMG_FMT_RGB24 : case VPX_IMG_FMT_BGR24 : bps = 24 ; break ; case VPX_IMG_FMT_RGB565 : case VPX_IMG_FMT_RGB565_LE : case VPX_IMG_FMT_RGB555 : case VPX_IMG_FMT_RGB555_LE : case VPX_IMG_FMT_UYVY : case VPX_IMG_FMT_YUY2 : case VPX_IMG_FMT_YVYU : bps = 16 ; break ; case VPX_IMG_FMT_I420 : case VPX_IMG_FMT_YV12 : case VPX_IMG_FMT_VPXI420 : case VPX_IMG_FMT_VPXYV12 : bps = 12 ; break ; <S2SV_StartBug> default : <S2SV_EndBug> bps = 16 ; break ; } switch ( fmt ) { case VPX_IMG_FMT_I420 : case VPX_IMG_FMT_YV12 : case VPX_IMG_FMT_VPXI420 : case VPX_IMG_FMT_VPXYV12 : <S2SV_StartBug> xcs = 1 ; <S2SV_EndBug> break ; default : xcs = 0 ; break ; } switch ( fmt ) { case VPX_IMG_FMT_I420 : <S2SV_StartBug> case VPX_IMG_FMT_YV12 : <S2SV_EndBug> case VPX_IMG_FMT_VPXI420 : <S2SV_StartBug> case VPX_IMG_FMT_VPXYV12 : <S2SV_EndBug> ycs = 1 ; break ; default : ycs = 0 ; break ; } align = ( 1 << xcs ) - 1 ; w = ( d_w + align ) & ~ align ; align = ( 1 << ycs ) - 1 ; h = ( d_h + align ) & ~ align ; s = ( fmt & VPX_IMG_FMT_PLANAR ) ? w : bps * w / 8 ; s = ( s + stride_align - 1 ) & ~ ( stride_align - 1 ) ; <S2SV_StartBug> if ( ! img ) { <S2SV_EndBug> img = ( vpx_image_t * ) calloc ( 1 , sizeof ( vpx_image_t ) ) ; if ( ! img ) goto fail ; img -> self_allocd = 1 ; } else { memset ( img , 0 , sizeof ( vpx_image_t ) ) ; } img -> img_data = img_data ; if ( ! img_data ) { <S2SV_StartBug> img -> img_data = img_buf_memalign ( buf_align , ( ( fmt & VPX_IMG_FMT_PLANAR ) ? <S2SV_EndBug> <S2SV_StartBug> h * s * bps / 8 : h * s ) ) ; <S2SV_EndBug> img -> img_data_owner = 1 ; } if ( ! img -> img_data ) goto fail ; <S2SV_StartBug> img -> fmt = fmt ; <S2SV_EndBug> img -> w = w ; img -> h = h ; img -> x_chroma_shift = xcs ; img -> y_chroma_shift = ycs ; img -> bps = bps ; <S2SV_StartBug> img -> stride [ VPX_PLANE_Y ] = img -> stride [ VPX_PLANE_ALPHA ] = s ; <S2SV_EndBug> <S2SV_StartBug> img -> stride [ VPX_PLANE_U ] = img -> stride [ VPX_PLANE_V ] = s >> xcs ; <S2SV_EndBug> if ( ! vpx_img_set_rect ( img , 0 , 0 , d_w , d_h ) ) return img ; fail : vpx_img_free ( img ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , bps ; unsigned int stride_in_bytes ; <S2SV_ModStart> ; break ; case VPX_IMG_FMT_I422 : case VPX_IMG_FMT_I440 : bps = 16 ; break ; case VPX_IMG_FMT_I444 : bps = 24 ; break ; case VPX_IMG_FMT_I42016 : bps = 24 ; break ; case VPX_IMG_FMT_I42216 : case VPX_IMG_FMT_I44016 : bps = 32 ; break ; case VPX_IMG_FMT_I44416 : bps = 48 ; break ; <S2SV_ModStart> case VPX_IMG_FMT_VPXYV12 : case VPX_IMG_FMT_I422 : case VPX_IMG_FMT_I42016 : case VPX_IMG_FMT_I42216 : <S2SV_ModStart> VPX_IMG_FMT_I420 : case VPX_IMG_FMT_I440 : case <S2SV_ModStart> : case VPX_IMG_FMT_VPXYV12 : case VPX_IMG_FMT_I42016 : case VPX_IMG_FMT_I44016 <S2SV_ModStart> 1 ) ; stride_in_bytes = ( fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? s * 2 : s ; <S2SV_ModStart> img_data ) { const uint64_t alloc_size = <S2SV_ModEnd> ( fmt & <S2SV_ModStart> VPX_IMG_FMT_PLANAR ) ? ( uint64_t ) <S2SV_ModStart> / 8 : ( uint64_t ) <S2SV_ModStart> h * s ; if ( alloc_size != ( size_t ) alloc_size <S2SV_ModEnd> ) goto fail <S2SV_ModStart> ; img -> img_data = ( uint8_t * ) vpx_memalign ( buf_align , ( size_t ) alloc_size ) ; img -> img_data_owner = 1 ; } if ( ! img -> img_data ) goto fail ; img -> fmt = fmt ; img -> bit_depth = ( fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? 16 : 8 <S2SV_ModEnd> ; img -> <S2SV_ModStart> VPX_PLANE_ALPHA ] = stride_in_bytes <S2SV_ModEnd> ; img -> <S2SV_ModStart> VPX_PLANE_V ] = stride_in_bytes <S2SV_ModEnd> >> xcs ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-674 <S2SV_StartBug> static int match ( Reinst * pc , const char * sp , const char * bol , int flags , Resub * out ) <S2SV_EndBug> { Resub scratch ; <S2SV_StartBug> int i ; <S2SV_EndBug> Rune c ; <S2SV_StartBug> for ( ; ; ) { <S2SV_EndBug> switch ( pc -> opcode ) { case I_END : <S2SV_StartBug> return 1 ; <S2SV_EndBug> case I_JUMP : pc = pc -> x ; break ; case I_SPLIT : scratch = * out ; <S2SV_StartBug> if ( match ( pc -> x , sp , bol , flags , & scratch ) ) { <S2SV_EndBug> * out = scratch ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> } pc = pc -> y ; break ; case I_PLA : <S2SV_StartBug> if ( ! match ( pc -> x , sp , bol , flags , out ) ) <S2SV_EndBug> return 0 ; pc = pc -> y ; break ; case I_NLA : scratch = * out ; <S2SV_StartBug> if ( match ( pc -> x , sp , bol , flags , & scratch ) ) <S2SV_EndBug> return 0 ; pc = pc -> y ; break ; case I_ANYNL : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_ANY : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( isnewline ( c ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_CHAR : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( flags & REG_ICASE ) c = canon ( c ) ; if ( c != pc -> c ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_CCLASS : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( flags & REG_ICASE ) { if ( ! incclasscanon ( pc -> cc , canon ( c ) ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } else { if ( ! incclass ( pc -> cc , c ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } pc = pc + 1 ; break ; case I_NCCLASS : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( flags & REG_ICASE ) { if ( incclasscanon ( pc -> cc , canon ( c ) ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } else { if ( incclass ( pc -> cc , c ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } pc = pc + 1 ; break ; case I_REF : i = out -> sub [ pc -> n ] . ep - out -> sub [ pc -> n ] . sp ; if ( flags & REG_ICASE ) { if ( strncmpcanon ( sp , out -> sub [ pc -> n ] . sp , i ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } else { if ( strncmp ( sp , out -> sub [ pc -> n ] . sp , i ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } if ( i > 0 ) sp += i ; pc = pc + 1 ; break ; case I_BOL : if ( sp == bol && ! ( flags & REG_NOTBOL ) ) { pc = pc + 1 ; break ; } if ( flags & REG_NEWLINE ) { if ( sp > bol && isnewline ( sp [ - 1 ] ) ) { pc = pc + 1 ; break ; } } <S2SV_StartBug> return 0 ; <S2SV_EndBug> case I_EOL : if ( * sp == 0 ) { pc = pc + 1 ; break ; } if ( flags & REG_NEWLINE ) { if ( isnewline ( * sp ) ) { pc = pc + 1 ; break ; } } <S2SV_StartBug> return 0 ; <S2SV_EndBug> case I_WORD : i = sp > bol && iswordchar ( sp [ - 1 ] ) ; i ^= iswordchar ( sp [ 0 ] ) ; if ( ! i ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_NWORD : i = sp > bol && iswordchar ( sp [ - 1 ] ) ; i ^= iswordchar ( sp [ 0 ] ) ; if ( i ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_LPAR : out -> sub [ pc -> n ] . sp = sp ; pc = pc + 1 ; break ; case I_RPAR : out -> sub [ pc -> n ] . ep = sp ; pc = pc + 1 ; break ; default : <S2SV_StartBug> return 0 ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Resub * out , int depth <S2SV_ModStart> scratch ; int result ; int <S2SV_ModStart> Rune c ; if ( depth > MAXREC ) return - 1 ; <S2SV_ModStart> I_END : return 0 <S2SV_ModEnd> ; case I_JUMP <S2SV_ModStart> * out ; result = <S2SV_ModEnd> match ( pc <S2SV_ModStart> , & scratch , depth + 1 ) ; if ( result == - 1 ) return - 1 ; if ( result == 0 <S2SV_ModEnd> ) { * <S2SV_ModStart> scratch ; return 0 <S2SV_ModEnd> ; } pc <S2SV_ModStart> case I_PLA : result = <S2SV_ModEnd> match ( pc <S2SV_ModStart> flags , out , depth + 1 ) ; if ( result == - 1 ) return - 1 ; if ( result == 1 ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> * out ; result = <S2SV_ModEnd> match ( pc <S2SV_ModStart> , & scratch , depth + 1 ) ; if ( result == - 1 ) return - 1 ; if ( result == 0 ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> c ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } else <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } pc <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } else <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } pc <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } else <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } if <S2SV_ModStart> } } return 1 <S2SV_ModEnd> ; case I_EOL <S2SV_ModStart> } } return 1 <S2SV_ModEnd> ; case I_WORD <S2SV_ModStart> i ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> i ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> default : return 1 <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15683\n\n```\nCWE-787 static void rfbProcessClientNormalMessage ( rfbClientPtr cl ) { int n ; rfbClientToServerMsg msg ; char * str ; READ ( ( char * ) & msg , 1 ) switch ( msg . type ) { case rfbSetPixelFormat : READ ( ( ( char * ) & msg ) + 1 , sz_rfbSetPixelFormatMsg - 1 ) cl -> format . bitsPerPixel = msg . spf . format . bitsPerPixel ; cl -> format . depth = msg . spf . format . depth ; cl -> format . bigEndian = ( msg . spf . format . bigEndian ? 1 : 0 ) ; cl -> format . trueColour = ( msg . spf . format . trueColour ? 1 : 0 ) ; cl -> format . redMax = Swap16IfLE ( msg . spf . format . redMax ) ; cl -> format . greenMax = Swap16IfLE ( msg . spf . format . greenMax ) ; cl -> format . blueMax = Swap16IfLE ( msg . spf . format . blueMax ) ; cl -> format . redShift = msg . spf . format . redShift ; cl -> format . greenShift = msg . spf . format . greenShift ; cl -> format . blueShift = msg . spf . format . blueShift ; cl -> readyForSetColourMapEntries = TRUE ; rfbSetTranslateFunction ( cl ) ; return ; case rfbFixColourMapEntries : READ ( ( ( char * ) & msg ) + 1 , sz_rfbFixColourMapEntriesMsg - 1 ) rfbLog ( \"rfbProcessClientNormalMessage:<S2SV_blank>FixColourMapEntries<S2SV_blank>unsupported\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; case rfbSetEncodings : { int i ; CARD32 enc ; Bool firstFence = ! cl -> enableFence ; Bool firstCU = ! cl -> enableCU ; Bool firstGII = ! cl -> enableGII ; Bool logTightCompressLevel = FALSE ; READ ( ( ( char * ) & msg ) + 1 , sz_rfbSetEncodingsMsg - 1 ) msg . se . nEncodings = Swap16IfLE ( msg . se . nEncodings ) ; cl -> preferredEncoding = - 1 ; cl -> useCopyRect = FALSE ; cl -> enableCursorShapeUpdates = FALSE ; cl -> enableCursorPosUpdates = FALSE ; cl -> enableLastRectEncoding = FALSE ; cl -> tightCompressLevel = TIGHT_DEFAULT_COMPRESSION ; cl -> tightSubsampLevel = TIGHT_DEFAULT_SUBSAMP ; cl -> tightQualityLevel = - 1 ; cl -> imageQualityLevel = - 1 ; for ( i = 0 ; i < msg . se . nEncodings ; i ++ ) { READ ( ( char * ) & enc , 4 ) enc = Swap32IfLE ( enc ) ; switch ( enc ) { case rfbEncodingCopyRect : cl -> useCopyRect = TRUE ; break ; case rfbEncodingRaw : if ( cl -> preferredEncoding == - 1 ) { cl -> preferredEncoding = enc ; rfbLog ( \"Using<S2SV_blank>raw<S2SV_blank>encoding<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; } break ; case rfbEncodingRRE : if ( cl -> preferredEncoding == - 1 ) { cl -> preferredEncoding = enc ; rfbLog ( \"Using<S2SV_blank>rre<S2SV_blank>encoding<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; } break ; case rfbEncodingCoRRE : if ( cl -> preferredEncoding == - 1 ) { cl -> preferredEncoding = enc ; rfbLog ( \"Using<S2SV_blank>CoRRE<S2SV_blank>encoding<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; } break ; case rfbEncodingHextile : if ( cl -> preferredEncoding == - 1 ) { cl -> preferredEncoding = enc ; rfbLog ( \"Using<S2SV_blank>hextile<S2SV_blank>encoding<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; } break ; case rfbEncodingZlib : if ( cl -> preferredEncoding == - 1 ) { cl -> preferredEncoding = enc ; rfbLog ( \"Using<S2SV_blank>zlib<S2SV_blank>encoding<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; } break ; case rfbEncodingZRLE : if ( cl -> preferredEncoding == - 1 ) { cl -> preferredEncoding = enc ; rfbLog ( \"Using<S2SV_blank>ZRLE<S2SV_blank>encoding<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; } break ; case rfbEncodingZYWRLE : if ( cl -> preferredEncoding == - 1 ) { cl -> preferredEncoding = enc ; rfbLog ( \"Using<S2SV_blank>ZYWRLE<S2SV_blank>encoding<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; } break ; case rfbEncodingTight : if ( cl -> preferredEncoding == - 1 ) { cl -> preferredEncoding = enc ; rfbLog ( \"Using<S2SV_blank>tight<S2SV_blank>encoding<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; } break ; case rfbEncodingXCursor : if ( ! cl -> enableCursorShapeUpdates ) { rfbLog ( \"Enabling<S2SV_blank>X-style<S2SV_blank>cursor<S2SV_blank>updates<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableCursorShapeUpdates = TRUE ; cl -> useRichCursorEncoding = FALSE ; cl -> cursorWasChanged = TRUE ; } break ; case rfbEncodingRichCursor : if ( ! cl -> enableCursorShapeUpdates ) { rfbLog ( \"Enabling<S2SV_blank>full-color<S2SV_blank>cursor<S2SV_blank>updates<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableCursorShapeUpdates = TRUE ; cl -> useRichCursorEncoding = TRUE ; cl -> cursorWasChanged = TRUE ; } break ; case rfbEncodingPointerPos : if ( ! cl -> enableCursorPosUpdates ) { rfbLog ( \"Enabling<S2SV_blank>cursor<S2SV_blank>position<S2SV_blank>updates<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableCursorPosUpdates = TRUE ; cl -> cursorWasMoved = TRUE ; cl -> cursorX = - 1 ; cl -> cursorY = - 1 ; } break ; case rfbEncodingLastRect : if ( ! cl -> enableLastRectEncoding ) { rfbLog ( \"Enabling<S2SV_blank>LastRect<S2SV_blank>protocol<S2SV_blank>extension<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableLastRectEncoding = TRUE ; } break ; case rfbEncodingFence : if ( ! cl -> enableFence ) { rfbLog ( \"Enabling<S2SV_blank>Fence<S2SV_blank>protocol<S2SV_blank>extension<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableFence = TRUE ; } break ; case rfbEncodingContinuousUpdates : if ( ! cl -> enableCU ) { rfbLog ( \"Enabling<S2SV_blank>Continuous<S2SV_blank>Updates<S2SV_blank>protocol<S2SV_blank>extension<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableCU = TRUE ; } break ; case rfbEncodingNewFBSize : if ( ! cl -> enableDesktopSize ) { if ( ! rfbAuthDisableRemoteResize ) { rfbLog ( \"Enabling<S2SV_blank>Desktop<S2SV_blank>Size<S2SV_blank>protocol<S2SV_blank>extension<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableDesktopSize = TRUE ; } else rfbLog ( \"WARNING:<S2SV_blank>Remote<S2SV_blank>desktop<S2SV_blank>resizing<S2SV_blank>disabled<S2SV_blank>per<S2SV_blank>system<S2SV_blank>policy.\\\\n\" ) ; } break ; case rfbEncodingExtendedDesktopSize : if ( ! cl -> enableExtDesktopSize ) { if ( ! rfbAuthDisableRemoteResize ) { rfbLog ( \"Enabling<S2SV_blank>Extended<S2SV_blank>Desktop<S2SV_blank>Size<S2SV_blank>protocol<S2SV_blank>extension<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableExtDesktopSize = TRUE ; } else rfbLog ( \"WARNING:<S2SV_blank>Remote<S2SV_blank>desktop<S2SV_blank>resizing<S2SV_blank>disabled<S2SV_blank>per<S2SV_blank>system<S2SV_blank>policy.\\\\n\" ) ; } break ; case rfbEncodingGII : if ( ! cl -> enableGII ) { rfbLog ( \"Enabling<S2SV_blank>GII<S2SV_blank>extension<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableGII = TRUE ; } break ; default : if ( enc >= ( CARD32 ) rfbEncodingCompressLevel0 && enc <= ( CARD32 ) rfbEncodingCompressLevel9 ) { cl -> zlibCompressLevel = enc & 0x0F ; cl -> tightCompressLevel = enc & 0x0F ; if ( cl -> preferredEncoding == rfbEncodingTight ) logTightCompressLevel = TRUE ; else rfbLog ( \"Using<S2SV_blank>compression<S2SV_blank>level<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> tightCompressLevel , cl -> host ) ; if ( rfbInterframe == - 1 ) { if ( cl -> tightCompressLevel >= 5 ) { if ( ! InterframeOn ( cl ) ) { rfbCloseClient ( cl ) ; return ; } } else InterframeOff ( cl ) ; } } else if ( enc >= ( CARD32 ) rfbEncodingSubsamp1X && enc <= ( CARD32 ) rfbEncodingSubsampGray ) { cl -> tightSubsampLevel = enc & 0xFF ; rfbLog ( \"Using<S2SV_blank>JPEG<S2SV_blank>subsampling<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> tightSubsampLevel , cl -> host ) ; } else if ( enc >= ( CARD32 ) rfbEncodingQualityLevel0 && enc <= ( CARD32 ) rfbEncodingQualityLevel9 ) { cl -> tightQualityLevel = JPEG_QUAL [ enc & 0x0F ] ; cl -> tightSubsampLevel = JPEG_SUBSAMP [ enc & 0x0F ] ; cl -> imageQualityLevel = enc & 0x0F ; if ( cl -> preferredEncoding == rfbEncodingTight ) rfbLog ( \"Using<S2SV_blank>JPEG<S2SV_blank>subsampling<S2SV_blank>%d,<S2SV_blank>Q%d<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> tightSubsampLevel , cl -> tightQualityLevel , cl -> host ) ; else rfbLog ( \"Using<S2SV_blank>image<S2SV_blank>quality<S2SV_blank>level<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> imageQualityLevel , cl -> host ) ; } else if ( enc >= ( CARD32 ) rfbEncodingFineQualityLevel0 + 1 && enc <= ( CARD32 ) rfbEncodingFineQualityLevel100 ) { cl -> tightQualityLevel = enc & 0xFF ; rfbLog ( \"Using<S2SV_blank>JPEG<S2SV_blank>quality<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> tightQualityLevel , cl -> host ) ; } else { rfbLog ( \"rfbProcessClientNormalMessage:<S2SV_blank>ignoring<S2SV_blank>unknown<S2SV_blank>encoding<S2SV_blank>%d<S2SV_blank>(%x)\\\\n\" , ( int ) enc , ( int ) enc ) ; } } } if ( cl -> preferredEncoding == - 1 ) cl -> preferredEncoding = rfbEncodingTight ; if ( cl -> preferredEncoding == rfbEncodingTight && logTightCompressLevel ) rfbLog ( \"Using<S2SV_blank>Tight<S2SV_blank>compression<S2SV_blank>level<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , rfbTightCompressLevel ( cl ) , cl -> host ) ; if ( cl -> enableCursorPosUpdates && ! cl -> enableCursorShapeUpdates ) { rfbLog ( \"Disabling<S2SV_blank>cursor<S2SV_blank>position<S2SV_blank>updates<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\\\\n\" , cl -> host ) ; cl -> enableCursorPosUpdates = FALSE ; } if ( cl -> enableFence && firstFence ) { if ( ! rfbSendFence ( cl , rfbFenceFlagRequest , 0 , NULL ) ) return ; } if ( cl -> enableCU && cl -> enableFence && firstCU ) { if ( ! rfbSendEndOfCU ( cl ) ) return ; } if ( cl -> enableGII && firstGII ) { rfbGIIServerVersionMsg msg ; msg . type = rfbGIIServer ; msg . endianAndSubType = rfbGIIVersion | rfbGIIBE ; msg . length = Swap16IfLE ( sz_rfbGIIServerVersionMsg - 4 ) ; msg . maximumVersion = msg . minimumVersion = Swap16IfLE ( 1 ) ; if ( WriteExact ( cl , ( char * ) & msg , sz_rfbGIIServerVersionMsg ) < 0 ) { rfbLogPerror ( \"rfbProcessClientNormalMessage:<S2SV_blank>write\" ) ; rfbCloseClient ( cl ) ; return ; } } return ; } case rfbFramebufferUpdateRequest : { RegionRec tmpRegion ; BoxRec box ; READ ( ( ( char * ) & msg ) + 1 , sz_rfbFramebufferUpdateRequestMsg - 1 ) box . x1 = Swap16IfLE ( msg . fur . x ) ; box . y1 = Swap16IfLE ( msg . fur . y ) ; box . x2 = box . x1 + Swap16IfLE ( msg . fur . w ) ; box . y2 = box . y1 + Swap16IfLE ( msg . fur . h ) ; SAFE_REGION_INIT ( pScreen , & tmpRegion , & box , 0 ) ; if ( ! msg . fur . incremental || ! cl -> continuousUpdates ) REGION_UNION ( pScreen , & cl -> requestedRegion , & cl -> requestedRegion , & tmpRegion ) ; if ( ! cl -> readyForSetColourMapEntries ) { cl -> readyForSetColourMapEntries = TRUE ; if ( ! cl -> format . trueColour ) { if ( ! rfbSetClientColourMap ( cl , 0 , 0 ) ) { REGION_UNINIT ( pScreen , & tmpRegion ) ; return ; } } } if ( ! msg . fur . incremental ) { REGION_UNION ( pScreen , & cl -> modifiedRegion , & cl -> modifiedRegion , & tmpRegion ) ; REGION_SUBTRACT ( pScreen , & cl -> copyRegion , & cl -> copyRegion , & tmpRegion ) ; REGION_UNION ( pScreen , & cl -> ifRegion , & cl -> ifRegion , & tmpRegion ) ; cl -> pendingExtDesktopResize = TRUE ; } if ( FB_UPDATE_PENDING ( cl ) && ( ! cl -> deferredUpdateScheduled || rfbDeferUpdateTime == 0 || gettime ( ) - cl -> deferredUpdateStart >= ( double ) rfbDeferUpdateTime ) ) { if ( rfbSendFramebufferUpdate ( cl ) ) cl -> deferredUpdateScheduled = FALSE ; } REGION_UNINIT ( pScreen , & tmpRegion ) ; return ; } case rfbKeyEvent : cl -> rfbKeyEventsRcvd ++ ; READ ( ( ( char * ) & msg ) + 1 , sz_rfbKeyEventMsg - 1 ) if ( ! rfbViewOnly && ! cl -> viewOnly ) KeyEvent ( ( KeySym ) Swap32IfLE ( msg . ke . key ) , msg . ke . down ) ; return ; case rfbPointerEvent : cl -> rfbPointerEventsRcvd ++ ; READ ( ( ( char * ) & msg ) + 1 , sz_rfbPointerEventMsg - 1 ) if ( pointerClient && ( pointerClient != cl ) ) return ; if ( msg . pe . buttonMask == 0 ) pointerClient = NULL ; else pointerClient = cl ; if ( ! rfbViewOnly && ! cl -> viewOnly ) { cl -> cursorX = ( int ) Swap16IfLE ( msg . pe . x ) ; cl -> cursorY = ( int ) Swap16IfLE ( msg . pe . y ) ; PtrAddEvent ( msg . pe . buttonMask , cl -> cursorX , cl -> cursorY , cl ) ; } return ; case rfbClientCutText : { int ignoredBytes = 0 ; READ ( ( ( char * ) & msg ) + 1 , sz_rfbClientCutTextMsg - 1 ) msg . cct . length = Swap32IfLE ( msg . cct . length ) ; if ( msg . cct . length > rfbMaxClipboard ) { rfbLog ( \"Truncating<S2SV_blank>%d-byte<S2SV_blank>clipboard<S2SV_blank>update<S2SV_blank>to<S2SV_blank>%d<S2SV_blank>bytes.\\\\n\" , msg . cct . length , rfbMaxClipboard ) ; ignoredBytes = msg . cct . length - rfbMaxClipboard ; msg . cct . length = rfbMaxClipboard ; } if ( msg . cct . length <= 0 ) return ; str = ( char * ) malloc ( msg . cct . length ) ; if ( str == NULL ) { rfbLogPerror ( \"rfbProcessClientNormalMessage:<S2SV_blank>rfbClientCutText<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\" ) ; rfbCloseClient ( cl ) ; return ; } if ( ( n = ReadExact ( cl , str , msg . cct . length ) ) <= 0 ) { if ( n != 0 ) rfbLogPerror ( \"rfbProcessClientNormalMessage:<S2SV_blank>read\" ) ; free ( str ) ; rfbCloseClient ( cl ) ; return ; } if ( ignoredBytes > 0 ) { if ( ( n = SkipExact ( cl , ignoredBytes ) ) <= 0 ) { if ( n != 0 ) rfbLogPerror ( \"rfbProcessClientNormalMessage:<S2SV_blank>read\" ) ; free ( str ) ; rfbCloseClient ( cl ) ; return ; } } if ( ! rfbViewOnly && ! cl -> viewOnly && ! rfbAuthDisableCBRecv ) { vncClientCutText ( str , msg . cct . length ) ; if ( rfbSyncCutBuffer ) rfbSetXCutText ( str , msg . cct . length ) ; } free ( str ) ; return ; } case rfbEnableContinuousUpdates : { BoxRec box ; READ ( ( ( char * ) & msg ) + 1 , sz_rfbEnableContinuousUpdatesMsg - 1 ) if ( ! cl -> enableFence || ! cl -> enableCU ) { rfbLog ( \"Ignoring<S2SV_blank>request<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>continuous<S2SV_blank>updates<S2SV_blank>because<S2SV_blank>the<S2SV_blank>client<S2SV_blank>does<S2SV_blank>not\\\\n\" ) ; rfbLog ( \"support<S2SV_blank>the<S2SV_blank>flow<S2SV_blank>control<S2SV_blank>extensions.\\\\n\" ) ; return ; } box . x1 = Swap16IfLE ( msg . ecu . x ) ; box . y1 = Swap16IfLE ( msg . ecu . y ) ; box . x2 = box . x1 + Swap16IfLE ( msg . ecu . w ) ; box . y2 = box . y1 + Swap16IfLE ( msg . ecu . h ) ; SAFE_REGION_INIT ( pScreen , & cl -> cuRegion , & box , 0 ) ; cl -> continuousUpdates = msg . ecu . enable ; if ( cl -> continuousUpdates ) { REGION_EMPTY ( pScreen , & cl -> requestedRegion ) ; if ( ! rfbSendFramebufferUpdate ( cl ) ) return ; } else { if ( ! rfbSendEndOfCU ( cl ) ) return ; } rfbLog ( \"Continuous<S2SV_blank>updates<S2SV_blank>%s\\\\n\" , cl -> continuousUpdates ? \"enabled\" : \"disabled\" ) ; return ; } case rfbFence : { CARD32 flags ; char data [ 64 ] ; READ ( ( ( char * ) & msg ) + 1 , sz_rfbFenceMsg - 1 ) flags = Swap32IfLE ( msg . f . flags ) ; <S2SV_StartBug> READ ( data , msg . f . length ) <S2SV_EndBug> <S2SV_StartBug> if ( msg . f . length > sizeof ( data ) ) <S2SV_EndBug> rfbLog ( \"Ignoring<S2SV_blank>fence.<S2SV_blank><S2SV_blank>Payload<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.\\\\n\" , msg . f . length ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> HandleFence ( cl , flags , msg . f . length , data ) ; <S2SV_EndBug> return ; } # define EDSERROR ( format , args ... ) { if ( ! strlen ( errMsg ) ) snprintf ( errMsg , 256 , \"Desktop<S2SV_blank>resize<S2SV_blank>ERROR:<S2SV_blank>\" format \"\\\\n\" , args ) ; result = rfbEDSResultInvalid ; } case rfbSetDesktopSize : { int i ; struct xorg_list newScreens ; rfbClientPtr cl2 ; int result = rfbEDSResultSuccess ; char errMsg [ 256 ] = \"\\\\0\" ; ScreenPtr pScreen = screenInfo . screens [ 0 ] ; READ ( ( ( char * ) & msg ) + 1 , sz_rfbSetDesktopSizeMsg - 1 ) if ( msg . sds . numScreens < 1 ) EDSERROR ( \"Requested<S2SV_blank>number<S2SV_blank>of<S2SV_blank>screens<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\" , msg . sds . numScreens ) ; msg . sds . w = Swap16IfLE ( msg . sds . w ) ; msg . sds . h = Swap16IfLE ( msg . sds . h ) ; if ( msg . sds . w < 1 || msg . sds . h < 1 ) EDSERROR ( \"Requested<S2SV_blank>framebuffer<S2SV_blank>dimensions<S2SV_blank>%dx%d<S2SV_blank>are<S2SV_blank>invalid\" , msg . sds . w , msg . sds . h ) ; xorg_list_init ( & newScreens ) ; for ( i = 0 ; i < msg . sds . numScreens ; i ++ ) { rfbScreenInfo * screen = rfbNewScreen ( 0 , 0 , 0 , 0 , 0 , 0 ) ; READ ( ( char * ) & screen -> s , sizeof ( rfbScreenDesc ) ) screen -> s . id = Swap32IfLE ( screen -> s . id ) ; screen -> s . x = Swap16IfLE ( screen -> s . x ) ; screen -> s . y = Swap16IfLE ( screen -> s . y ) ; screen -> s . w = Swap16IfLE ( screen -> s . w ) ; screen -> s . h = Swap16IfLE ( screen -> s . h ) ; screen -> s . flags = Swap32IfLE ( screen -> s . flags ) ; if ( screen -> s . w < 1 || screen -> s . h < 1 ) EDSERROR ( \"Screen<S2SV_blank>0x%.8x<S2SV_blank>requested<S2SV_blank>dimensions<S2SV_blank>%dx%d<S2SV_blank>are<S2SV_blank>invalid\" , ( unsigned int ) screen -> s . id , screen -> s . w , screen -> s . h ) ; if ( screen -> s . x >= msg . sds . w || screen -> s . y >= msg . sds . h || screen -> s . x + screen -> s . w > msg . sds . w || screen -> s . y + screen -> s . h > msg . sds . h ) EDSERROR ( \"Screen<S2SV_blank>0x%.8x<S2SV_blank>requested<S2SV_blank>geometry<S2SV_blank>%dx%d+%d+%d<S2SV_blank>exceeds<S2SV_blank>requested<S2SV_blank>framebuffer<S2SV_blank>dimensions\" , ( unsigned int ) screen -> s . id , screen -> s . w , screen -> s . h , screen -> s . x , screen -> s . y ) ; if ( rfbFindScreenID ( & newScreens , screen -> s . id ) ) { EDSERROR ( \"Screen<S2SV_blank>0x%.8x<S2SV_blank>duplicate<S2SV_blank>ID\" , ( unsigned int ) screen -> s . id ) ; free ( screen ) ; } else rfbAddScreen ( & newScreens , screen ) ; } if ( cl -> viewOnly ) { rfbLog ( \"NOTICE:<S2SV_blank>Ignoring<S2SV_blank>remote<S2SV_blank>desktop<S2SV_blank>resize<S2SV_blank>request<S2SV_blank>from<S2SV_blank>a<S2SV_blank>view-only<S2SV_blank>client.\\\\n\" ) ; result = rfbEDSResultProhibited ; } else if ( result == rfbEDSResultSuccess ) { result = ResizeDesktop ( pScreen , cl , msg . sds . w , msg . sds . h , & newScreens ) ; if ( result == rfbEDSResultSuccess ) return ; } else rfbLog ( errMsg ) ; rfbRemoveScreens ( & newScreens ) ; for ( cl2 = rfbClientHead ; cl2 ; cl2 = cl2 -> next ) { if ( cl2 == cl ) { cl2 -> pendingExtDesktopResize = TRUE ; cl2 -> reason = rfbEDSReasonClient ; cl2 -> result = result ; rfbSendFramebufferUpdate ( cl2 ) ; break ; } } return ; } case rfbGIIClient : { CARD8 endianAndSubType , littleEndian , subType ; READ ( ( char * ) & endianAndSubType , 1 ) ; littleEndian = ( endianAndSubType & rfbGIIBE ) ? 0 : 1 ; subType = endianAndSubType & ~ rfbGIIBE ; switch ( subType ) { case rfbGIIVersion : READ ( ( char * ) & msg . giicv . length , sz_rfbGIIClientVersionMsg - 2 ) ; if ( littleEndian != * ( const char * ) & rfbEndianTest ) { msg . giicv . length = Swap16 ( msg . giicv . length ) ; msg . giicv . version = Swap16 ( msg . giicv . version ) ; } if ( msg . giicv . length != sz_rfbGIIClientVersionMsg - 4 || msg . giicv . version < 1 ) { rfbLog ( \"ERROR:<S2SV_blank>Malformed<S2SV_blank>GII<S2SV_blank>client<S2SV_blank>version<S2SV_blank>message\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } rfbLog ( \"Client<S2SV_blank>supports<S2SV_blank>GII<S2SV_blank>version<S2SV_blank>%d\\\\n\" , msg . giicv . version ) ; break ; case rfbGIIDeviceCreate : { int i ; rfbDevInfo dev ; rfbGIIDeviceCreatedMsg dcmsg ; memset ( & dev , 0 , sizeof ( dev ) ) ; dcmsg . deviceOrigin = 0 ; READ ( ( char * ) & msg . giidc . length , sz_rfbGIIDeviceCreateMsg - 2 ) ; if ( littleEndian != * ( const char * ) & rfbEndianTest ) { msg . giidc . length = Swap16 ( msg . giidc . length ) ; msg . giidc . vendorID = Swap32 ( msg . giidc . vendorID ) ; msg . giidc . productID = Swap32 ( msg . giidc . productID ) ; msg . giidc . canGenerate = Swap32 ( msg . giidc . canGenerate ) ; msg . giidc . numRegisters = Swap32 ( msg . giidc . numRegisters ) ; msg . giidc . numValuators = Swap32 ( msg . giidc . numValuators ) ; msg . giidc . numButtons = Swap32 ( msg . giidc . numButtons ) ; } rfbLog ( \"GII<S2SV_blank>Device<S2SV_blank>Create:<S2SV_blank>%s\\\\n\" , msg . giidc . deviceName ) ; # ifdef GII_DEBUG rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Vendor<S2SV_blank>ID:<S2SV_blank>%d\\\\n\" , msg . giidc . vendorID ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Product<S2SV_blank>ID:<S2SV_blank>%d\\\\n\" , msg . giidc . productID ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Event<S2SV_blank>mask:<S2SV_blank>%.8x\\\\n\" , msg . giidc . canGenerate ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Registers:<S2SV_blank>%d\\\\n\" , msg . giidc . numRegisters ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Valuators:<S2SV_blank>%d\\\\n\" , msg . giidc . numValuators ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Buttons:<S2SV_blank>%d\\\\n\" , msg . giidc . numButtons ) ; # endif if ( msg . giidc . length != sz_rfbGIIDeviceCreateMsg - 4 + msg . giidc . numValuators * sz_rfbGIIValuator ) { rfbLog ( \"ERROR:<S2SV_blank>Malformed<S2SV_blank>GII<S2SV_blank>device<S2SV_blank>create<S2SV_blank>message\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } if ( msg . giidc . numButtons > MAX_BUTTONS ) { rfbLog ( \"GII<S2SV_blank>device<S2SV_blank>create<S2SV_blank>ERROR:<S2SV_blank>%d<S2SV_blank>buttons<S2SV_blank>exceeds<S2SV_blank>max<S2SV_blank>of<S2SV_blank>%d\\\\n\" , msg . giidc . numButtons , MAX_BUTTONS ) ; SKIP ( msg . giidc . numValuators * sz_rfbGIIValuator ) ; goto sendMessage ; } if ( msg . giidc . numValuators > MAX_VALUATORS ) { rfbLog ( \"GII<S2SV_blank>device<S2SV_blank>create<S2SV_blank>ERROR:<S2SV_blank>%d<S2SV_blank>valuators<S2SV_blank>exceeds<S2SV_blank>max<S2SV_blank>of<S2SV_blank>%d\\\\n\" , msg . giidc . numValuators , MAX_VALUATORS ) ; SKIP ( msg . giidc . numValuators * sz_rfbGIIValuator ) ; goto sendMessage ; } memcpy ( & dev . name , msg . giidc . deviceName , 32 ) ; dev . numButtons = msg . giidc . numButtons ; dev . numValuators = msg . giidc . numValuators ; dev . eventMask = msg . giidc . canGenerate ; dev . mode = ( dev . eventMask & rfbGIIValuatorAbsoluteMask ) ? Absolute : Relative ; dev . productID = msg . giidc . productID ; if ( dev . mode == Relative ) { rfbLog ( \"GII<S2SV_blank>device<S2SV_blank>create<S2SV_blank>ERROR:<S2SV_blank>relative<S2SV_blank>valuators<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>(yet)\\\\n\" ) ; SKIP ( msg . giidc . numValuators * sz_rfbGIIValuator ) ; goto sendMessage ; } for ( i = 0 ; i < dev . numValuators ; i ++ ) { rfbGIIValuator * v = & dev . valuators [ i ] ; READ ( ( char * ) v , sz_rfbGIIValuator ) ; if ( littleEndian != * ( const char * ) & rfbEndianTest ) { v -> index = Swap32 ( v -> index ) ; v -> rangeMin = Swap32 ( ( CARD32 ) v -> rangeMin ) ; v -> rangeCenter = Swap32 ( ( CARD32 ) v -> rangeCenter ) ; v -> rangeMax = Swap32 ( ( CARD32 ) v -> rangeMax ) ; v -> siUnit = Swap32 ( v -> siUnit ) ; v -> siAdd = Swap32 ( ( CARD32 ) v -> siAdd ) ; v -> siMul = Swap32 ( ( CARD32 ) v -> siMul ) ; v -> siDiv = Swap32 ( ( CARD32 ) v -> siDiv ) ; v -> siShift = Swap32 ( ( CARD32 ) v -> siShift ) ; } # ifdef GII_DEBUG rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Valuator:<S2SV_blank>%s<S2SV_blank>(%s)\\\\n\" , v -> longName , v -> shortName ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Index:<S2SV_blank>%d\\\\n\" , v -> index ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Range:<S2SV_blank>min<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>center<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>max<S2SV_blank>=<S2SV_blank>%d\\\\n\" , v -> rangeMin , v -> rangeCenter , v -> rangeMax ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SI<S2SV_blank>unit:<S2SV_blank>%d\\\\n\" , v -> siUnit ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SI<S2SV_blank>add:<S2SV_blank>%d\\\\n\" , v -> siAdd ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SI<S2SV_blank>multiply:<S2SV_blank>%d\\\\n\" , v -> siMul ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SI<S2SV_blank>divide:<S2SV_blank>%d\\\\n\" , v -> siDiv ) ; rfbLog ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SI<S2SV_blank>shift:<S2SV_blank>%d\\\\n\" , v -> siShift ) ; # endif } for ( i = 0 ; i < cl -> numDevices ; i ++ ) { if ( ! strcmp ( dev . name , cl -> devices [ i ] . name ) ) { rfbLog ( \"Device<S2SV_blank>\\\\\\'%s\\\\\\'<S2SV_blank>already<S2SV_blank>exists<S2SV_blank>with<S2SV_blank>GII<S2SV_blank>device<S2SV_blank>ID<S2SV_blank>%d\\\\n\" , dev . name , i + 1 ) ; dcmsg . deviceOrigin = Swap32IfLE ( i + 1 ) ; goto sendMessage ; } } if ( rfbVirtualTablet || AddExtInputDevice ( & dev ) ) { memcpy ( & cl -> devices [ cl -> numDevices ] , & dev , sizeof ( dev ) ) ; cl -> numDevices ++ ; dcmsg . deviceOrigin = Swap32IfLE ( cl -> numDevices ) ; } rfbLog ( \"GII<S2SV_blank>device<S2SV_blank>ID<S2SV_blank>=<S2SV_blank>%d\\\\n\" , cl -> numDevices ) ; sendMessage : dcmsg . type = rfbGIIServer ; dcmsg . endianAndSubType = rfbGIIDeviceCreate | rfbGIIBE ; dcmsg . length = Swap16IfLE ( sz_rfbGIIDeviceCreatedMsg - 4 ) ; if ( WriteExact ( cl , ( char * ) & dcmsg , sz_rfbGIIDeviceCreatedMsg ) < 0 ) { rfbLogPerror ( \"rfbProcessClientNormalMessage:<S2SV_blank>write\" ) ; rfbCloseClient ( cl ) ; return ; } break ; } case rfbGIIDeviceDestroy : READ ( ( char * ) & msg . giidd . length , sz_rfbGIIDeviceDestroyMsg - 2 ) ; if ( littleEndian != * ( const char * ) & rfbEndianTest ) { msg . giidd . length = Swap16 ( msg . giidd . length ) ; msg . giidd . deviceOrigin = Swap32 ( msg . giidd . deviceOrigin ) ; } if ( msg . giidd . length != sz_rfbGIIDeviceDestroyMsg - 4 ) { rfbLog ( \"ERROR:<S2SV_blank>Malformed<S2SV_blank>GII<S2SV_blank>device<S2SV_blank>create<S2SV_blank>message\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } RemoveExtInputDevice ( cl , msg . giidd . deviceOrigin - 1 ) ; break ; case rfbGIIEvent : { CARD16 length ; READ ( ( char * ) & length , sizeof ( CARD16 ) ) ; if ( littleEndian != * ( const char * ) & rfbEndianTest ) length = Swap16 ( length ) ; while ( length > 0 ) { CARD8 eventSize , eventType ; READ ( ( char * ) & eventSize , 1 ) ; READ ( ( char * ) & eventType , 1 ) ; switch ( eventType ) { case rfbGIIButtonPress : case rfbGIIButtonRelease : { rfbGIIButtonEvent b ; rfbDevInfo * dev ; READ ( ( char * ) & b . pad , sz_rfbGIIButtonEvent - 2 ) ; if ( littleEndian != * ( const char * ) & rfbEndianTest ) { b . deviceOrigin = Swap32 ( b . deviceOrigin ) ; b . buttonNumber = Swap32 ( b . buttonNumber ) ; } if ( eventSize != sz_rfbGIIButtonEvent || b . deviceOrigin <= 0 || b . buttonNumber < 1 ) { rfbLog ( \"ERROR:<S2SV_blank>Malformed<S2SV_blank>GII<S2SV_blank>button<S2SV_blank>event\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } if ( eventSize > length ) { rfbLog ( \"ERROR:<S2SV_blank>Malformed<S2SV_blank>GII<S2SV_blank>event<S2SV_blank>message\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } length -= eventSize ; if ( b . deviceOrigin < 1 || b . deviceOrigin > cl -> numDevices ) { rfbLog ( \"ERROR:<S2SV_blank>GII<S2SV_blank>button<S2SV_blank>event<S2SV_blank>from<S2SV_blank>non-existent<S2SV_blank>device<S2SV_blank>%d\\\\n\" , b . deviceOrigin ) ; rfbCloseClient ( cl ) ; return ; } dev = & cl -> devices [ b . deviceOrigin - 1 ] ; if ( ( eventType == rfbGIIButtonPress && ( dev -> eventMask & rfbGIIButtonPressMask ) == 0 ) || ( eventType == rfbGIIButtonRelease && ( dev -> eventMask & rfbGIIButtonReleaseMask ) == 0 ) ) { rfbLog ( \"ERROR:<S2SV_blank>Device<S2SV_blank>%d<S2SV_blank>can\\'t<S2SV_blank>generate<S2SV_blank>GII<S2SV_blank>button<S2SV_blank>events\\\\n\" , b . deviceOrigin ) ; rfbCloseClient ( cl ) ; return ; } if ( b . buttonNumber > dev -> numButtons ) { rfbLog ( \"ERROR:<S2SV_blank>GII<S2SV_blank>button<S2SV_blank>%d<S2SV_blank>event<S2SV_blank>for<S2SV_blank>device<S2SV_blank>%d<S2SV_blank>exceeds<S2SV_blank>button<S2SV_blank>count<S2SV_blank>(%d)\\\\n\" , b . buttonNumber , b . deviceOrigin , dev -> numButtons ) ; rfbCloseClient ( cl ) ; return ; } # ifdef GII_DEBUG rfbLog ( \"Device<S2SV_blank>%d<S2SV_blank>button<S2SV_blank>%d<S2SV_blank>%s\\\\n\" , b . deviceOrigin , b . buttonNumber , eventType == rfbGIIButtonPress ? \"PRESS\" : \"release\" ) ; fflush ( stderr ) ; # endif ExtInputAddEvent ( dev , eventType == rfbGIIButtonPress ? ButtonPress : ButtonRelease , b . buttonNumber ) ; break ; } case rfbGIIValuatorRelative : case rfbGIIValuatorAbsolute : { rfbGIIValuatorEvent v ; int i ; rfbDevInfo * dev ; READ ( ( char * ) & v . pad , sz_rfbGIIValuatorEvent - 2 ) ; if ( littleEndian != * ( const char * ) & rfbEndianTest ) { v . deviceOrigin = Swap32 ( v . deviceOrigin ) ; v . first = Swap32 ( v . first ) ; v . count = Swap32 ( v . count ) ; } if ( eventSize != sz_rfbGIIValuatorEvent + sizeof ( int ) * v . count ) { rfbLog ( \"ERROR:<S2SV_blank>Malformed<S2SV_blank>GII<S2SV_blank>valuator<S2SV_blank>event\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } if ( eventSize > length ) { rfbLog ( \"ERROR:<S2SV_blank>Malformed<S2SV_blank>GII<S2SV_blank>event<S2SV_blank>message\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } length -= eventSize ; if ( v . deviceOrigin < 1 || v . deviceOrigin > cl -> numDevices ) { rfbLog ( \"ERROR:<S2SV_blank>GII<S2SV_blank>valuator<S2SV_blank>event<S2SV_blank>from<S2SV_blank>non-existent<S2SV_blank>device<S2SV_blank>%d\\\\n\" , v . deviceOrigin ) ; rfbCloseClient ( cl ) ; return ; } dev = & cl -> devices [ v . deviceOrigin - 1 ] ; if ( ( eventType == rfbGIIValuatorRelative && ( dev -> eventMask & rfbGIIValuatorRelativeMask ) == 0 ) || ( eventType == rfbGIIValuatorAbsolute && ( dev -> eventMask & rfbGIIValuatorAbsoluteMask ) == 0 ) ) { rfbLog ( \"ERROR:<S2SV_blank>Device<S2SV_blank>%d<S2SV_blank>cannot<S2SV_blank>generate<S2SV_blank>GII<S2SV_blank>valuator<S2SV_blank>events\\\\n\" , v . deviceOrigin ) ; rfbCloseClient ( cl ) ; return ; } if ( v . first + v . count > dev -> numValuators ) { rfbLog ( \"ERROR:<S2SV_blank>GII<S2SV_blank>valuator<S2SV_blank>event<S2SV_blank>for<S2SV_blank>device<S2SV_blank>%d<S2SV_blank>exceeds<S2SV_blank>valuator<S2SV_blank>count<S2SV_blank>(%d)\\\\n\" , v . deviceOrigin , dev -> numValuators ) ; rfbCloseClient ( cl ) ; return ; } # ifdef GII_DEBUG rfbLog ( \"Device<S2SV_blank>%d<S2SV_blank>Valuator<S2SV_blank>%s<S2SV_blank>first=%d<S2SV_blank>count=%d:\\\\n\" , v . deviceOrigin , eventType == rfbGIIValuatorRelative ? \"rel\" : \"ABS\" , v . first , v . count ) ; # endif for ( i = v . first ; i < v . first + v . count ; i ++ ) { READ ( ( char * ) & dev -> values [ i ] , sizeof ( int ) ) ; if ( littleEndian != * ( const char * ) & rfbEndianTest ) dev -> values [ i ] = Swap32 ( ( CARD32 ) dev -> values [ i ] ) ; # ifdef GII_DEBUG fprintf ( stderr , \"v[%d]=%d<S2SV_blank>\" , i , dev -> values [ i ] ) ; # endif } # ifdef GII_DEBUG fprintf ( stderr , \"\\\\n\" ) ; # endif if ( v . count > 0 ) { dev -> valFirst = v . first ; dev -> valCount = v . count ; dev -> mode = eventType == rfbGIIValuatorAbsolute ? Absolute : Relative ; ExtInputAddEvent ( dev , MotionNotify , 0 ) ; } break ; } default : rfbLog ( \"ERROR:<S2SV_blank>This<S2SV_blank>server<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>GII<S2SV_blank>event<S2SV_blank>type<S2SV_blank>%d\\\\n\" , eventType ) ; rfbCloseClient ( cl ) ; return ; } } if ( length != 0 ) { rfbLog ( \"ERROR:<S2SV_blank>Malformed<S2SV_blank>GII<S2SV_blank>event<S2SV_blank>message\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } break ; } } return ; } default : rfbLog ( \"rfbProcessClientNormalMessage:<S2SV_blank>unknown<S2SV_blank>message<S2SV_blank>type<S2SV_blank>%d\\\\n\" , msg . type ) ; rfbLog ( \"<S2SV_blank>...<S2SV_blank>closing<S2SV_blank>connection\\\\n\" ) ; rfbCloseClient ( cl ) ; return ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flags ) ; <S2SV_ModEnd> if ( msg <S2SV_ModStart> data ) ) { <S2SV_ModStart> length ) ; SKIP ( msg . f . length ) } else { READ ( data , msg . f . length ) <S2SV_ModEnd> HandleFence ( cl <S2SV_ModStart> data ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int fpDiff ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint32 bps = tif -> tif_dir . td_bitspersample / 8 ; tmsize_t wc = cc / bps ; tmsize_t count ; uint8 * cp = ( uint8 * ) cp0 ; <S2SV_StartBug> uint8 * tmp = ( uint8 * ) _TIFFmalloc ( cc ) ; <S2SV_EndBug> if ( ( cc % ( bps * stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"fpDiff\" , \"%s\" , \"(cc%(bps*stride))!=0\" ) ; return 0 ; } <S2SV_StartBug> if ( ! tmp ) <S2SV_EndBug> return 0 ; _TIFFmemcpy ( tmp , cp0 , cc ) ; for ( count = 0 ; count < wc ; count ++ ) { uint32 byte ; for ( byte = 0 ; byte < bps ; byte ++ ) { # if WORDS_BIGENDIAN cp [ byte * wc + count ] = tmp [ bps * count + byte ] ; # else cp [ ( bps - byte - 1 ) * wc + count ] = tmp [ bps * count + byte ] ; # endif } } _TIFFfree ( tmp ) ; cp = ( uint8 * ) cp0 ; cp += cc - stride - 1 ; for ( count = cc ; count > stride ; count -= stride ) REPEAT4 ( stride , cp [ stride ] = ( unsigned char ) ( ( cp [ stride ] - cp [ 0 ] ) & 0xff ) ; cp -- ) return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8 * tmp <S2SV_ModEnd> ; if ( <S2SV_ModStart> 0 ; } tmp = ( uint8 * ) _TIFFmalloc ( cc ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7446\n\n```\nCWE-000 static int unix_dgram_connect ( struct socket * sock , struct sockaddr * addr , int alen , int flags ) { struct sock * sk = sock -> sk ; struct net * net = sock_net ( sk ) ; struct sockaddr_un * sunaddr = ( struct sockaddr_un * ) addr ; struct sock * other ; unsigned int hash ; int err ; if ( addr -> sa_family != AF_UNSPEC ) { err = unix_mkname ( sunaddr , alen , & hash ) ; if ( err < 0 ) goto out ; alen = err ; if ( test_bit ( SOCK_PASSCRED , & sock -> flags ) && ! unix_sk ( sk ) -> addr && ( err = unix_autobind ( sock ) ) != 0 ) goto out ; restart : other = unix_find_other ( net , sunaddr , alen , sock -> type , hash , & err ) ; if ( ! other ) goto out ; unix_state_double_lock ( sk , other ) ; if ( sock_flag ( other , SOCK_DEAD ) ) { unix_state_double_unlock ( sk , other ) ; sock_put ( other ) ; goto restart ; } err = - EPERM ; if ( ! unix_may_send ( sk , other ) ) goto out_unlock ; err = security_unix_may_send ( sk -> sk_socket , other -> sk_socket ) ; if ( err ) goto out_unlock ; } else { other = NULL ; unix_state_double_lock ( sk , other ) ; } if ( unix_peer ( sk ) ) { struct sock * old_peer = unix_peer ( sk ) ; unix_peer ( sk ) = other ; <S2SV_StartBug> unix_state_double_unlock ( sk , other ) ; <S2SV_EndBug> if ( other != old_peer ) unix_dgram_disconnected ( sk , old_peer ) ; sock_put ( old_peer ) ; } else { unix_peer ( sk ) = other ; unix_state_double_unlock ( sk , other ) ; } return 0 ; out_unlock : unix_state_double_unlock ( sk , other ) ; sock_put ( other ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = other ; unix_dgram_peer_wake_disconnect_wakeup ( sk , old_peer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-119 int mp_pack ( lua_State * L ) { int nargs = lua_gettop ( L ) ; int i ; mp_buf * buf ; if ( nargs == 0 ) <S2SV_StartBug> return luaL_argerror ( L , 0 , \"MessagePack<S2SV_blank>pack<S2SV_blank>needs<S2SV_blank>input.\" ) ; <S2SV_EndBug> buf = mp_buf_new ( L ) ; for ( i = 1 ; i <= nargs ; i ++ ) { lua_pushvalue ( L , i ) ; mp_encode_lua_type ( L , buf , 0 ) ; lua_pushlstring ( L , ( char * ) buf -> b , buf -> len ) ; buf -> free += buf -> len ; buf -> len = 0 ; } mp_buf_free ( L , buf ) ; lua_concat ( L , nargs ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 , \"MessagePack<S2SV_blank>pack<S2SV_blank>needs<S2SV_blank>input.\" ) ; if ( ! lua_checkstack ( L , nargs ) ) return luaL_argerror ( L , 0 , \"Too<S2SV_blank>many<S2SV_blank>arguments<S2SV_blank>for<S2SV_blank>MessagePack<S2SV_blank>pack.\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2486\n\n```\nCWE-264 const char * string_of_NPNVariable ( int variable ) { const char * str ; switch ( variable ) { # define _ ( VAL ) case VAL : str = # VAL ; break ; _ ( NPNVxDisplay ) ; _ ( NPNVxtAppContext ) ; _ ( NPNVnetscapeWindow ) ; _ ( NPNVjavascriptEnabledBool ) ; _ ( NPNVasdEnabledBool ) ; _ ( NPNVisOfflineBool ) ; _ ( NPNVserviceManager ) ; _ ( NPNVDOMElement ) ; _ ( NPNVDOMWindow ) ; _ ( NPNVToolkit ) ; _ ( NPNVSupportsXEmbedBool ) ; _ ( NPNVWindowNPObject ) ; _ ( NPNVPluginElementNPObject ) ; _ ( NPNVSupportsWindowless ) ; <S2SV_StartBug> # undef _ <S2SV_EndBug> default : switch ( variable & 0xff ) { # define _ ( VAL , VAR ) case VAL : str = # VAR ; break _ ( 10 , NPNVserviceManager ) ; _ ( 11 , NPNVDOMElement ) ; _ ( 12 , NPNVDOMWindow ) ; _ ( 13 , NPNVToolkit ) ; # undef _ default : str = \"<unknown<S2SV_blank>variable>\" ; break ; } break ; } return str ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NPNVSupportsWindowless ) ; _ ( NPNVprivateModeBool ) ; _ ( NPNVsupportsAdvancedKeyHandling ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000380\n\n```\nCWE-200 static ssize_t snd_timer_user_read ( struct file * file , char __user * buffer , size_t count , loff_t * offset ) { struct snd_timer_user * tu ; long result = 0 , unit ; int qhead ; int err = 0 ; tu = file -> private_data ; unit = tu -> tread ? sizeof ( struct snd_timer_tread ) : sizeof ( struct snd_timer_read ) ; <S2SV_StartBug> spin_lock_irq ( & tu -> qlock ) ; <S2SV_EndBug> while ( ( long ) count - result >= unit ) { while ( ! tu -> qused ) { wait_queue_t wait ; if ( ( file -> f_flags & O_NONBLOCK ) != 0 || result > 0 ) { err = - EAGAIN ; goto _error ; } set_current_state ( TASK_INTERRUPTIBLE ) ; init_waitqueue_entry ( & wait , current ) ; add_wait_queue ( & tu -> qchange_sleep , & wait ) ; spin_unlock_irq ( & tu -> qlock ) ; <S2SV_StartBug> schedule ( ) ; <S2SV_EndBug> spin_lock_irq ( & tu -> qlock ) ; remove_wait_queue ( & tu -> qchange_sleep , & wait ) ; if ( tu -> disconnected ) { err = - ENODEV ; goto _error ; } if ( signal_pending ( current ) ) { err = - ERESTARTSYS ; goto _error ; } } qhead = tu -> qhead ++ ; tu -> qhead %= tu -> queue_size ; tu -> qused -- ; spin_unlock_irq ( & tu -> qlock ) ; <S2SV_StartBug> mutex_lock ( & tu -> ioctl_lock ) ; <S2SV_EndBug> if ( tu -> tread ) { if ( copy_to_user ( buffer , & tu -> tqueue [ qhead ] , sizeof ( struct snd_timer_tread ) ) ) err = - EFAULT ; } else { if ( copy_to_user ( buffer , & tu -> queue [ qhead ] , sizeof ( struct snd_timer_read ) ) ) err = - EFAULT ; } <S2SV_StartBug> mutex_unlock ( & tu -> ioctl_lock ) ; <S2SV_EndBug> spin_lock_irq ( & tu -> qlock ) ; if ( err < 0 ) goto _error ; result += unit ; buffer += unit ; } _error : spin_unlock_irq ( & tu -> qlock ) ; <S2SV_StartBug> return result > 0 ? result : err ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snd_timer_read ) ; mutex_lock ( & tu -> ioctl_lock ) ; <S2SV_ModStart> qlock ) ; mutex_unlock ( & tu -> ioctl_lock ) ; schedule ( ) ; mutex_lock ( & tu -> ioctl_lock <S2SV_ModEnd> ) ; spin_lock_irq <S2SV_ModStart> qlock ) ; <S2SV_ModEnd> if ( tu <S2SV_ModStart> EFAULT ; } <S2SV_ModEnd> spin_lock_irq ( & <S2SV_ModStart> qlock ) ; mutex_unlock ( & tu -> ioctl_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9539\n\n```\nCWE-125 static int readContigTilesIntoBuffer ( TIFF * in , uint8 * buf , uint32 imagelength , uint32 imagewidth , uint32 tw , uint32 tl , tsample_t spp , uint16 bps ) { int status = 1 ; tsample_t sample = 0 ; tsample_t count = spp ; uint32 row , col , trow ; uint32 nrow , ncol ; uint32 dst_rowsize , shift_width ; uint32 bytes_per_sample , bytes_per_pixel ; uint32 trailing_bits , prev_trailing_bits ; uint32 tile_rowsize = TIFFTileRowSize ( in ) ; uint32 src_offset , dst_offset ; uint32 row_offset , col_offset ; uint8 * bufp = ( uint8 * ) buf ; unsigned char * src = NULL ; unsigned char * dst = NULL ; tsize_t tbytes = 0 , tile_buffsize = 0 ; tsize_t tilesize = TIFFTileSize ( in ) ; unsigned char * tilebuf = NULL ; bytes_per_sample = ( bps + 7 ) / 8 ; bytes_per_pixel = ( ( bps * spp ) + 7 ) / 8 ; if ( ( bps % 8 ) == 0 ) shift_width = 0 ; else { if ( bytes_per_pixel < ( bytes_per_sample + 1 ) ) shift_width = bytes_per_pixel ; else shift_width = bytes_per_sample + 1 ; } tile_buffsize = tilesize ; if ( tilesize == 0 || tile_rowsize == 0 ) { TIFFError ( \"readContigTilesIntoBuffer\" , \"Tile<S2SV_blank>size<S2SV_blank>or<S2SV_blank>tile<S2SV_blank>rowsize<S2SV_blank>is<S2SV_blank>zero\" ) ; exit ( - 1 ) ; } if ( tilesize < ( tsize_t ) ( tl * tile_rowsize ) ) { # ifdef DEBUG2 TIFFError ( \"readContigTilesIntoBuffer\" , \"Tilesize<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small,<S2SV_blank>using<S2SV_blank>alternate<S2SV_blank>calculation<S2SV_blank>%u\" , tilesize , tl * tile_rowsize ) ; # endif tile_buffsize = tl * tile_rowsize ; if ( tl != ( tile_buffsize / tile_rowsize ) ) { TIFFError ( \"readContigTilesIntoBuffer\" , \"Integer<S2SV_blank>overflow<S2SV_blank>when<S2SV_blank>calculating<S2SV_blank>buffer<S2SV_blank>size.\" ) ; exit ( - 1 ) ; } } <S2SV_StartBug> tilebuf = _TIFFmalloc ( tile_buffsize ) ; <S2SV_EndBug> if ( tilebuf == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> dst_rowsize = ( ( imagewidth * bps * spp ) + 7 ) / 8 ; for ( row = 0 ; row < imagelength ; row += tl ) { nrow = ( row + tl > imagelength ) ? imagelength - row : tl ; for ( col = 0 ; col < imagewidth ; col += tw ) { tbytes = TIFFReadTile ( in , tilebuf , col , row , 0 , 0 ) ; if ( tbytes < tilesize && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>tile<S2SV_blank>at<S2SV_blank>row<S2SV_blank>%lu<S2SV_blank>col<S2SV_blank>%lu,<S2SV_blank>Read<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>%lu\" , ( unsigned long ) col , ( unsigned long ) row , ( unsigned long ) tbytes , ( unsigned long ) tilesize ) ; status = 0 ; _TIFFfree ( tilebuf ) ; return status ; } row_offset = row * dst_rowsize ; col_offset = ( ( col * bps * spp ) + 7 ) / 8 ; bufp = buf + row_offset + col_offset ; if ( col + tw > imagewidth ) ncol = imagewidth - col ; else ncol = tw ; if ( ( ( bps % 8 ) == 0 ) && ( count == spp ) ) { for ( trow = 0 ; trow < nrow ; trow ++ ) { src_offset = trow * tile_rowsize ; _TIFFmemcpy ( bufp , tilebuf + src_offset , ( ncol * spp * bps ) / 8 ) ; bufp += ( imagewidth * bps * spp ) / 8 ; } } else { prev_trailing_bits = trailing_bits = 0 ; trailing_bits = ( ncol * bps * spp ) % 8 ; for ( trow = 0 ; trow < nrow ; trow ++ ) { src_offset = trow * tile_rowsize ; src = tilebuf + src_offset ; dst_offset = ( row + trow ) * dst_rowsize ; dst = buf + dst_offset + col_offset ; switch ( shift_width ) { case 0 : if ( extractContigSamplesBytes ( src , dst , ncol , sample , spp , bps , count , 0 , ncol ) ) { TIFFError ( \"readContigTilesIntoBuffer\" , \"Unable<S2SV_blank>to<S2SV_blank>extract<S2SV_blank>row<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>tile<S2SV_blank>%lu\" , row , ( unsigned long ) TIFFCurrentTile ( in ) ) ; return 1 ; } break ; case 1 : if ( bps == 1 ) { if ( extractContigSamplesShifted8bits ( src , dst , ncol , sample , spp , bps , count , 0 , ncol , prev_trailing_bits ) ) { TIFFError ( \"readContigTilesIntoBuffer\" , \"Unable<S2SV_blank>to<S2SV_blank>extract<S2SV_blank>row<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>tile<S2SV_blank>%lu\" , row , ( unsigned long ) TIFFCurrentTile ( in ) ) ; return 1 ; } break ; } else if ( extractContigSamplesShifted16bits ( src , dst , ncol , sample , spp , bps , count , 0 , ncol , prev_trailing_bits ) ) { TIFFError ( \"readContigTilesIntoBuffer\" , \"Unable<S2SV_blank>to<S2SV_blank>extract<S2SV_blank>row<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>tile<S2SV_blank>%lu\" , row , ( unsigned long ) TIFFCurrentTile ( in ) ) ; return 1 ; } break ; case 2 : if ( extractContigSamplesShifted24bits ( src , dst , ncol , sample , spp , bps , count , 0 , ncol , prev_trailing_bits ) ) { TIFFError ( \"readContigTilesIntoBuffer\" , \"Unable<S2SV_blank>to<S2SV_blank>extract<S2SV_blank>row<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>tile<S2SV_blank>%lu\" , row , ( unsigned long ) TIFFCurrentTile ( in ) ) ; return 1 ; } break ; case 3 : case 4 : case 5 : if ( extractContigSamplesShifted32bits ( src , dst , ncol , sample , spp , bps , count , 0 , ncol , prev_trailing_bits ) ) { TIFFError ( \"readContigTilesIntoBuffer\" , \"Unable<S2SV_blank>to<S2SV_blank>extract<S2SV_blank>row<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>tile<S2SV_blank>%lu\" , row , ( unsigned long ) TIFFCurrentTile ( in ) ) ; return 1 ; } break ; default : TIFFError ( \"readContigTilesIntoBuffer\" , \"Unsupported<S2SV_blank>bit<S2SV_blank>depth<S2SV_blank>%d\" , bps ) ; return 1 ; } } prev_trailing_bits += trailing_bits ; } } } _TIFFfree ( tilebuf ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( tile_buffsize > 0xFFFFFFFFU - 3 ) { TIFFError ( \"readContigTilesIntoBuffer\" , \"Integer<S2SV_blank>overflow<S2SV_blank>when<S2SV_blank>calculating<S2SV_blank>buffer<S2SV_blank>size.\" ) ; exit ( - 1 ) ; } <S2SV_ModStart> _TIFFmalloc ( tile_buffsize + 3 <S2SV_ModStart> 0 ) return 0 ; tilebuf [ tile_buffsize ] = 0 ; tilebuf [ tile_buffsize + 1 ] = 0 ; tilebuf [ tile_buffsize + 2 ] =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010298\n\n```\nCWE-119 TEE_Result syscall_asymm_verify ( unsigned long state , const struct utee_attribute * usr_params , size_t num_params , const void * data , size_t data_len , const void * sig , size_t sig_len ) { TEE_Result res ; struct tee_cryp_state * cs ; struct tee_ta_session * sess ; struct tee_obj * o ; size_t hash_size ; int salt_len = 0 ; TEE_Attribute * params = NULL ; uint32_t hash_algo ; struct user_ta_ctx * utc ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; utc = to_user_ta_ctx ( sess -> ctx ) ; res = tee_svc_cryp_get_state ( sess , tee_svc_uref_to_vaddr ( state ) , & cs ) ; if ( res != TEE_SUCCESS ) return res ; if ( cs -> mode != TEE_MODE_VERIFY ) return TEE_ERROR_BAD_PARAMETERS ; res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) data , data_len ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) sig , sig_len ) ; if ( res != TEE_SUCCESS ) return res ; <S2SV_StartBug> params = malloc ( sizeof ( TEE_Attribute ) * num_params ) ; <S2SV_EndBug> if ( ! params ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( utc , usr_params , num_params , params ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_obj_get ( utc , cs -> key1 , & o ) ; if ( res != TEE_SUCCESS ) goto out ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_INITIALIZED ) == 0 ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } switch ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) ) { case TEE_MAIN_ALGO_RSA : if ( cs -> algo != TEE_ALG_RSASSA_PKCS1_V1_5 ) { hash_algo = TEE_DIGEST_HASH_TO_ALGO ( cs -> algo ) ; res = tee_hash_get_digest_size ( hash_algo , & hash_size ) ; if ( res != TEE_SUCCESS ) break ; if ( data_len != hash_size ) { res = TEE_ERROR_BAD_PARAMETERS ; break ; } salt_len = pkcs1_get_salt_len ( params , num_params , hash_size ) ; } res = crypto_acipher_rsassa_verify ( cs -> algo , o -> attr , salt_len , data , data_len , sig , sig_len ) ; break ; case TEE_MAIN_ALGO_DSA : hash_algo = TEE_DIGEST_HASH_TO_ALGO ( cs -> algo ) ; res = tee_hash_get_digest_size ( hash_algo , & hash_size ) ; if ( res != TEE_SUCCESS ) break ; if ( data_len > hash_size ) { res = TEE_ERROR_BAD_PARAMETERS ; break ; } res = crypto_acipher_dsa_verify ( cs -> algo , o -> attr , data , data_len , sig , sig_len ) ; break ; case TEE_MAIN_ALGO_ECDSA : res = crypto_acipher_ecc_verify ( cs -> algo , o -> attr , data , data_len , sig , sig_len ) ; break ; default : res = TEE_ERROR_NOT_SUPPORTED ; } out : free ( params ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , num_params , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15385\n\n```\nCWE-119 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( shdr -> sh_size < 1 ) { return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; <S2SV_StartBug> for ( cnt = 0 , i = 0 ; cnt < shdr -> sh_info && ( ( char * ) defs + i < end ) ; ++ cnt ) { <S2SV_EndBug> Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; char key [ 32 ] = { 0 } ; Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) vstart += verdef -> vd_aux ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } <S2SV_StartBug> i += verdef -> vd_next ; <S2SV_EndBug> } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; i >= 0 && <S2SV_ModStart> out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7895\n\n```\nCWE-119 int nfs3svc_decode_symlinkargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd3_symlinkargs * args ) { unsigned int len , avail ; char * old , * new ; struct kvec * vec ; if ( ! ( p = decode_fh ( p , & args -> ffh ) ) || ! ( p = decode_filename ( p , & args -> fname , & args -> flen ) ) ) return 0 ; p = decode_sattr3 ( p , & args -> attrs ) ; len = ntohl ( * p ++ ) ; if ( len == 0 || len > NFS3_MAXPATHLEN || len >= PAGE_SIZE ) return 0 ; args -> tname = new = page_address ( * ( rqstp -> rq_next_page ++ ) ) ; args -> tlen = len ; old = ( char * ) p ; vec = & rqstp -> rq_arg . head [ 0 ] ; <S2SV_StartBug> avail = vec -> iov_len - ( old - ( char * ) vec -> iov_base ) ; <S2SV_EndBug> while ( len && avail && * old ) { * new ++ = * old ++ ; len -- ; avail -- ; } if ( len && ! avail && rqstp -> rq_arg . page_len ) { avail = min_t ( unsigned int , rqstp -> rq_arg . page_len , PAGE_SIZE ) ; old = page_address ( rqstp -> rq_arg . pages [ 0 ] ) ; } while ( len && avail && * old ) { * new ++ = * old ++ ; len -- ; avail -- ; } * new = '\\\\0' ; if ( len ) return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ] ; if ( ( void * ) old > vec -> iov_base + vec -> iov_len ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int PredictorDecodeRow ( TIFF * tif , uint8 * op0 , tmsize_t occ0 , uint16 s ) { TIFFPredictorState * sp = PredictorState ( tif ) ; assert ( sp != NULL ) ; assert ( sp -> decoderow != NULL ) ; assert ( sp -> decodepfunc != NULL ) ; if ( ( * sp -> decoderow ) ( tif , op0 , occ0 , s ) ) { <S2SV_StartBug> ( * sp -> decodepfunc ) ( tif , op0 , occ0 ) ; <S2SV_EndBug> <S2SV_StartBug> return 1 ; <S2SV_EndBug> } else return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { return <S2SV_ModStart> occ0 ) ; <S2SV_ModEnd> } else return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10807\n\n```\nCWE-287 static int _c2s_sx_sasl_callback ( int cb , void * arg , void * * res , sx_t s , void * cbarg ) { c2s_t c2s = ( c2s_t ) cbarg ; const char * my_realm , * mech ; sx_sasl_creds_t creds ; static char buf [ 3072 ] ; char mechbuf [ 256 ] ; struct jid_st jid ; jid_static_buf jid_buf ; int i , r ; sess_t sess ; char skey [ 44 ] ; host_t host ; jid_static ( & jid , & jid_buf ) ; assert ( s != NULL ) ; sprintf ( skey , \"%d\" , s -> tag ) ; sess = xhash_get ( c2s -> sessions , skey ) ; switch ( cb ) { case sx_sasl_cb_GET_REALM : if ( s -> req_to == NULL ) my_realm = \"\" ; else { host = xhash_get ( c2s -> hosts , s -> req_to ) ; if ( host == NULL ) { log_write ( c2s -> log , LOG_ERR , \"SASL<S2SV_blank>callback<S2SV_blank>for<S2SV_blank>non-existing<S2SV_blank>host:<S2SV_blank>%s\" , s -> req_to ) ; * res = ( void * ) NULL ; return sx_sasl_ret_FAIL ; } my_realm = host -> realm ; if ( my_realm == NULL ) my_realm = s -> req_to ; } strncpy ( buf , my_realm , 256 ) ; * res = ( void * ) buf ; log_debug ( ZONE , \"sx<S2SV_blank>sasl<S2SV_blank>callback:<S2SV_blank>get<S2SV_blank>realm:<S2SV_blank>realm<S2SV_blank>is<S2SV_blank>\\'%s\\'\" , buf ) ; return sx_sasl_ret_OK ; break ; case sx_sasl_cb_GET_PASS : assert ( sess != NULL ) ; creds = ( sx_sasl_creds_t ) arg ; log_debug ( ZONE , \"sx<S2SV_blank>sasl<S2SV_blank>callback:<S2SV_blank>get<S2SV_blank>pass<S2SV_blank>(authnid=%s,<S2SV_blank>realm=%s)\" , creds -> authnid , creds -> realm ) ; if ( sess -> host -> ar -> get_password && ( sess -> host -> ar -> get_password ) ( sess -> host -> ar , sess , ( char * ) creds -> authnid , ( creds -> realm != NULL ) ? ( char * ) creds -> realm : \"\" , buf ) == 0 ) { * res = buf ; return sx_sasl_ret_OK ; } return sx_sasl_ret_FAIL ; case sx_sasl_cb_CHECK_PASS : assert ( sess != NULL ) ; creds = ( sx_sasl_creds_t ) arg ; log_debug ( ZONE , \"sx<S2SV_blank>sasl<S2SV_blank>callback:<S2SV_blank>check<S2SV_blank>pass<S2SV_blank>(authnid=%s,<S2SV_blank>realm=%s)\" , creds -> authnid , creds -> realm ) ; if ( sess -> host -> ar -> check_password != NULL ) { if ( ( sess -> host -> ar -> check_password ) ( sess -> host -> ar , sess , ( char * ) creds -> authnid , ( creds -> realm != NULL ) ? ( char * ) creds -> realm : \"\" , ( char * ) creds -> pass ) == 0 ) return sx_sasl_ret_OK ; else return sx_sasl_ret_FAIL ; } if ( sess -> host -> ar -> get_password != NULL ) { if ( ( sess -> host -> ar -> get_password ) ( sess -> host -> ar , sess , ( char * ) creds -> authnid , ( creds -> realm != NULL ) ? ( char * ) creds -> realm : \"\" , buf ) != 0 ) return sx_sasl_ret_FAIL ; if ( strcmp ( creds -> pass , buf ) == 0 ) return sx_sasl_ret_OK ; } return sx_sasl_ret_FAIL ; break ; case sx_sasl_cb_CHECK_AUTHZID : assert ( sess != NULL ) ; creds = ( sx_sasl_creds_t ) arg ; if ( creds -> authzid == NULL || creds -> authzid [ 0 ] == '\\\\0' ) return sx_sasl_ret_FAIL ; if ( jid_reset ( & jid , creds -> authzid , - 1 ) == NULL ) return sx_sasl_ret_FAIL ; if ( ! s -> req_to || ( strcmp ( jid . domain , s -> req_to ) != 0 ) ) return sx_sasl_ret_FAIL ; if ( jid . resource [ 0 ] != '\\\\0' ) return sx_sasl_ret_FAIL ; if ( sess -> host -> ar -> user_authz_allowed ) { if ( sess -> host -> ar -> user_authz_allowed ( sess -> host -> ar , sess , ( char * ) creds -> authnid , ( char * ) creds -> realm , ( char * ) creds -> authzid ) ) return sx_sasl_ret_OK ; } else { if ( strcmp ( creds -> authnid , jid . node ) == 0 && ( sess -> host -> ar -> user_exists ) ( sess -> host -> ar , sess , jid . node , jid . domain ) ) return sx_sasl_ret_OK ; } return sx_sasl_ret_FAIL ; case sx_sasl_cb_GEN_AUTHZID : jid_reset ( & jid , s -> req_to , - 1 ) ; jid_random_part ( & jid , jid_NODE ) ; strcpy ( buf , jid . node ) ; * res = ( void * ) buf ; return sx_sasl_ret_OK ; break ; case sx_sasl_cb_CHECK_MECH : mech = ( char * ) arg ; strncpy ( mechbuf , mech , sizeof ( mechbuf ) ) ; mechbuf [ sizeof ( mechbuf ) - 1 ] = '\\\\0' ; <S2SV_StartBug> for ( i = 0 ; mechbuf [ i ] ; i ++ ) mechbuf [ i ] = tolower ( mechbuf [ i ] ) ; <S2SV_EndBug> host = xhash_get ( c2s -> hosts , s -> req_to ) ; if ( host == NULL ) { log_write ( c2s -> log , LOG_WARNING , \"SASL<S2SV_blank>callback<S2SV_blank>for<S2SV_blank>non-existing<S2SV_blank>host:<S2SV_blank>%s\" , s -> req_to ) ; return sx_sasl_ret_FAIL ; } if ( strcmp ( mechbuf , \"digest-md5\" ) == 0 ) { if ( host -> ar -> get_password == NULL ) return sx_sasl_ret_FAIL ; } else if ( strcmp ( mechbuf , \"plain\" ) == 0 ) { if ( host -> ar -> get_password == NULL && host -> ar -> check_password == NULL ) return sx_sasl_ret_FAIL ; } if ( s -> ssf > 0 ) { r = snprintf ( buf , sizeof ( buf ) , \"authreg.ssl-mechanisms.sasl.%s\" , mechbuf ) ; if ( r < - 1 || r > sizeof ( buf ) ) return sx_sasl_ret_FAIL ; if ( config_get ( c2s -> config , buf ) != NULL ) return sx_sasl_ret_OK ; } r = snprintf ( buf , sizeof ( buf ) , \"authreg.mechanisms.sasl.%s\" , mechbuf ) ; if ( r < - 1 || r > sizeof ( buf ) ) return sx_sasl_ret_FAIL ; if ( config_get ( c2s -> config , buf ) != NULL ) return sx_sasl_ret_OK ; else return sx_sasl_ret_FAIL ; default : break ; } return sx_sasl_ret_FAIL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ i ] ) ; log_debug ( ZONE , \"sx<S2SV_blank>sasl<S2SV_blank>callback:<S2SV_blank>check<S2SV_blank>mech<S2SV_blank>(mech=%s)\" , mechbuf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> static int jas_iccputsint ( jas_stream_t * out , int n , longlong val ) <S2SV_EndBug> { <S2SV_StartBug> ulonglong tmp ; <S2SV_EndBug> tmp = ( val < 0 ) ? ( abort ( ) , 0 ) : val ; return jas_iccputuint ( out , n , tmp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int n , jas_longlong <S2SV_ModEnd> val ) { <S2SV_ModStart> val ) { jas_ulonglong <S2SV_ModEnd> tmp ; tmp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _hostsock_recvmsg ( oe_fd_t * sock_ , struct oe_msghdr * msg , int flags ) { ssize_t ret = - 1 ; sock_t * sock = _cast_sock ( sock_ ) ; oe_errno = 0 ; void * buf = NULL ; <S2SV_StartBug> size_t buf_size = 0 ; <S2SV_EndBug> if ( ! sock || ! msg || ( msg -> msg_iovlen && ! msg -> msg_iov ) ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( oe_iov_pack ( msg -> msg_iov , ( int ) msg -> msg_iovlen , & buf , & buf_size ) != 0 ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_ENOMEM ) ; <S2SV_StartBug> { <S2SV_EndBug> if ( oe_syscall_recvmsg_ocall ( & ret , sock -> host_fd , msg -> msg_name , msg -> msg_namelen , <S2SV_StartBug> & msg -> msg_namelen , <S2SV_EndBug> buf , msg -> msg_iovlen , buf_size , msg -> msg_control , msg -> msg_controllen , <S2SV_StartBug> & msg -> msg_controllen , <S2SV_EndBug> flags ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } if ( ret == - 1 ) OE_RAISE_ERRNO ( oe_errno ) ; } <S2SV_StartBug> if ( oe_iov_sync ( msg -> msg_iov , ( int ) msg -> msg_iovlen , buf , buf_size ) != 0 ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; done : if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t buf_size = 0 ; size_t data_size = 0 ; oe_socklen_t namelen_out = 0 ; size_t controllen_out <S2SV_ModStart> , & buf_size , & data_size <S2SV_ModStart> OE_ENOMEM ) ; if ( data_size > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_ModStart> msg_namelen , & namelen_out <S2SV_ModEnd> , buf , <S2SV_ModStart> msg_controllen , & controllen_out <S2SV_ModEnd> , flags ) <S2SV_ModStart> } if ( ! msg -> msg_name ) msg -> msg_namelen = 0 ; else { if ( namelen_out > sizeof ( struct oe_sockaddr_storage ) ) OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( msg -> msg_namelen >= namelen_out ) msg -> msg_namelen = namelen_out ; } if ( ! msg -> msg_control ) msg -> msg_controllen = 0 ; else { if ( msg -> msg_controllen >= controllen_out ) msg -> msg_controllen = controllen_out ; else msg -> msg_flags |= OE_MSG_CTRUNC ; } if ( ret > ( ssize_t ) data_size ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8925\n\n```\nCWE-404 static int omninet_open ( struct tty_struct * tty , struct usb_serial_port * port ) { <S2SV_StartBug> struct usb_serial * serial = port -> serial ; <S2SV_EndBug> struct usb_serial_port * wport ; wport = serial -> port [ 1 ] ; tty_port_tty_set ( & wport -> port , tty ) ; return usb_serial_generic_open ( tty , port ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> port ) { <S2SV_ModEnd> return usb_serial_generic_open (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12135\n\n```\nCWE-190 <S2SV_StartBug> int mongo_env_write_socket ( mongo * conn , const void * buf , int len ) { <S2SV_EndBug> const char * cbuf = buf ; # ifdef __APPLE__ int flags = 0 ; # else int flags = MSG_NOSIGNAL ; # endif while ( len ) { <S2SV_StartBug> int sent = send ( conn -> sock , cbuf , len , flags ) ; <S2SV_EndBug> if ( sent == - 1 ) { if ( errno == EPIPE ) conn -> connected = 0 ; __mongo_set_error ( conn , MONGO_IO_ERROR , strerror ( errno ) , errno ) ; return MONGO_ERROR ; } cbuf += sent ; len -= sent ; } return MONGO_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * buf , size_t <S2SV_ModEnd> len ) { <S2SV_ModStart> len ) { size_t <S2SV_ModEnd> sent = send\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8961\n\n```\nCWE-416 int __ext4_journal_stop ( const char * where , unsigned int line , handle_t * handle ) { struct super_block * sb ; int err ; int rc ; if ( ! ext4_handle_valid ( handle ) ) { ext4_put_nojournal ( handle ) ; return 0 ; } <S2SV_StartBug> if ( ! handle -> h_transaction ) { <S2SV_EndBug> <S2SV_StartBug> err = jbd2_journal_stop ( handle ) ; <S2SV_EndBug> <S2SV_StartBug> return handle -> h_err ? handle -> h_err : err ; <S2SV_EndBug> } <S2SV_StartBug> sb = handle -> h_transaction -> t_journal -> j_private ; <S2SV_EndBug> err = handle -> h_err ; rc = jbd2_journal_stop ( handle ) ; if ( ! err ) err = rc ; if ( err ) __ext4_std_error ( sb , where , line , err ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } err = handle -> h_err ; <S2SV_ModStart> h_transaction ) { rc <S2SV_ModEnd> = jbd2_journal_stop ( <S2SV_ModStart> ) ; return err ? err : rc <S2SV_ModEnd> ; } sb <S2SV_ModStart> t_journal -> j_private <S2SV_ModEnd> ; rc =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4998\n\n```\nCWE-119 static inline int check_entry_size_and_hooks ( struct arpt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct arpt_entry ) != 0 || <S2SV_StartBug> ( unsigned char * ) e + sizeof ( struct arpt_entry ) >= limit ) { <S2SV_EndBug> duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct arpt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_ARP_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arpt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-119 l_int32 gplotMakeOutput ( GPLOT * gplot ) { <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> char * cmdname ; l_int32 ignore ; PROCNAME ( \"gplotMakeOutput\" ) ; if ( ! gplot ) return ERROR_INT ( \"gplot<S2SV_blank>not<S2SV_blank>defined\" , procName , 1 ) ; gplotGenCommandFile ( gplot ) ; gplotGenDataFiles ( gplot ) ; cmdname = genPathname ( gplot -> cmdname , NULL ) ; # ifndef _WIN32 <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"gnuplot<S2SV_blank>%s\" , cmdname ) ; <S2SV_EndBug> # else <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"wgnuplot<S2SV_blank>%s\" , cmdname ) ; <S2SV_EndBug> # endif # ifndef OS_IOS ignore = system ( buf ) ; # endif LEPT_FREE ( cmdname ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"gnuplot<S2SV_blank>%s\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"wgnuplot<S2SV_blank>%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 int do_fpu_inst ( unsigned short inst , struct pt_regs * regs ) { struct task_struct * tsk = current ; struct sh_fpu_soft_struct * fpu = & ( tsk -> thread . xstate -> softfpu ) ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , 0 ) ; <S2SV_EndBug> if ( ! ( task_thread_info ( tsk ) -> status & TS_USEDFPU ) ) { fpu_init ( fpu ) ; task_thread_info ( tsk ) -> status |= TS_USEDFPU ; } return fpu_emulate ( inst , fpu , regs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-90(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5730\n\n```\nCWE-90 krb5_error_code krb5_ldap_put_principal ( krb5_context context , krb5_db_entry * entry , char * * db_args ) { int l = 0 , kerberos_principal_object_type = 0 ; unsigned int ntrees = 0 , tre = 0 ; krb5_error_code st = 0 , tempst = 0 ; LDAP * ld = NULL ; LDAPMessage * result = NULL , * ent = NULL ; char * * subtreelist = NULL ; char * user = NULL , * subtree = NULL , * principal_dn = NULL ; <S2SV_StartBug> char * * values = NULL , * strval [ 10 ] = { NULL } , errbuf [ 1024 ] ; <S2SV_EndBug> char * filtuser = NULL ; struct berval * * bersecretkey = NULL ; LDAPMod * * mods = NULL ; krb5_boolean create_standalone = FALSE ; <S2SV_StartBug> krb5_boolean krb_identity_exists = FALSE , establish_links = FALSE ; <S2SV_EndBug> char * standalone_principal_dn = NULL ; krb5_tl_data * tl_data = NULL ; krb5_key_data * * keys = NULL ; kdb5_dal_handle * dal_handle = NULL ; krb5_ldap_context * ldap_context = NULL ; krb5_ldap_server_handle * ldap_server_handle = NULL ; osa_princ_ent_rec princ_ent = { 0 } ; xargs_t xargs = { 0 } ; char * polname = NULL ; OPERATION optype ; krb5_boolean found_entry = FALSE ; krb5_clear_error_message ( context ) ; SETUP_CONTEXT ( ) ; if ( ldap_context -> lrparams == NULL || ldap_context -> container_dn == NULL ) return EINVAL ; GET_HANDLE ( ) ; if ( ! is_principal_in_realm ( ldap_context , entry -> princ ) ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"Principal<S2SV_blank>does<S2SV_blank>not<S2SV_blank>belong<S2SV_blank>to<S2SV_blank>the<S2SV_blank>default<S2SV_blank>realm\" ) ) ; goto cleanup ; } if ( ( ( st = krb5_unparse_name ( context , entry -> princ , & user ) ) != 0 ) || ( ( st = krb5_ldap_unparse_principal_name ( user ) ) != 0 ) ) goto cleanup ; filtuser = ldap_filter_correct ( user ) ; if ( filtuser == NULL ) { st = ENOMEM ; goto cleanup ; } if ( entry -> mask & KADM5_PRINCIPAL ) optype = ADD_PRINCIPAL ; else optype = MODIFY_PRINCIPAL ; if ( ( ( st = krb5_get_princ_type ( context , entry , & kerberos_principal_object_type ) ) != 0 ) || ( ( st = krb5_get_userdn ( context , entry , & principal_dn ) ) != 0 ) ) goto cleanup ; if ( ( st = process_db_args ( context , db_args , & xargs , optype ) ) != 0 ) goto cleanup ; if ( entry -> mask & KADM5_LOAD ) { unsigned int tree = 0 ; int numlentries = 0 ; char * filter = NULL ; if ( asprintf ( & filter , FILTER \"%s))\" , filtuser ) < 0 ) { filter = NULL ; st = ENOMEM ; goto cleanup ; } if ( ( st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ) != 0 ) goto cleanup ; found_entry = FALSE ; for ( tree = 0 ; found_entry == FALSE && tree < ntrees ; ++ tree ) { if ( principal_dn == NULL ) { LDAP_SEARCH_1 ( subtreelist [ tree ] , ldap_context -> lrparams -> search_scope , filter , principal_attributes , IGNORE_STATUS ) ; } else { LDAP_SEARCH_1 ( principal_dn , LDAP_SCOPE_BASE , filter , principal_attributes , IGNORE_STATUS ) ; } if ( st == LDAP_SUCCESS ) { numlentries = ldap_count_entries ( ld , result ) ; if ( numlentries > 1 ) { free ( filter ) ; st = EINVAL ; k5_setmsg ( context , st , _ ( \"operation<S2SV_blank>can<S2SV_blank>not<S2SV_blank>continue,<S2SV_blank>more<S2SV_blank>than<S2SV_blank>one<S2SV_blank>\" \"entry<S2SV_blank>with<S2SV_blank>principal<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>found\" ) , user ) ; goto cleanup ; } else if ( numlentries == 1 ) { found_entry = TRUE ; if ( principal_dn == NULL ) { ent = ldap_first_entry ( ld , result ) ; if ( ent != NULL ) { if ( ( principal_dn = ldap_get_dn ( ld , ent ) ) == NULL ) { ldap_get_option ( ld , LDAP_OPT_RESULT_CODE , & st ) ; st = set_ldap_error ( context , st , 0 ) ; free ( filter ) ; goto cleanup ; } } } } } else if ( st != LDAP_NO_SUCH_OBJECT ) { st = set_ldap_error ( context , st , 0 ) ; free ( filter ) ; goto cleanup ; } ldap_msgfree ( result ) ; result = NULL ; } free ( filter ) ; if ( found_entry == FALSE && principal_dn != NULL ) { create_standalone = TRUE ; standalone_principal_dn = strdup ( principal_dn ) ; CHECK_NULL ( standalone_principal_dn ) ; } } if ( principal_dn == NULL && xargs . dn == NULL ) { if ( entry -> princ -> length == 2 && entry -> princ -> data [ 0 ] . length == strlen ( \"krbtgt\" ) && strncmp ( entry -> princ -> data [ 0 ] . data , \"krbtgt\" , entry -> princ -> data [ 0 ] . length ) == 0 ) { subtree = strdup ( ldap_context -> lrparams -> realmdn ) ; } else if ( xargs . containerdn ) { if ( ( st = checkattributevalue ( ld , xargs . containerdn , NULL , NULL , NULL ) ) != 0 ) { if ( st == KRB5_KDB_NOENTRY || st == KRB5_KDB_CONSTRAINT_VIOLATION ) { int ost = st ; st = EINVAL ; k5_wrapmsg ( context , ost , st , _ ( \"\\'%s\\'<S2SV_blank>not<S2SV_blank>found\" ) , xargs . containerdn ) ; } goto cleanup ; } subtree = strdup ( xargs . containerdn ) ; } else if ( ldap_context -> lrparams -> containerref && strlen ( ldap_context -> lrparams -> containerref ) != 0 ) { subtree = strdup ( ldap_context -> lrparams -> containerref ) ; } else { subtree = strdup ( ldap_context -> lrparams -> realmdn ) ; } CHECK_NULL ( subtree ) ; if ( asprintf ( & standalone_principal_dn , \"krbprincipalname=%s,%s\" , filtuser , subtree ) < 0 ) standalone_principal_dn = NULL ; CHECK_NULL ( standalone_principal_dn ) ; create_standalone = TRUE ; free ( subtree ) ; subtree = NULL ; } if ( xargs . dn_from_kbd == TRUE ) { <S2SV_StartBug> int dnlen = 0 , subtreelen = 0 ; <S2SV_EndBug> char * dn = NULL ; krb5_boolean outofsubtree = TRUE ; if ( xargs . dn != NULL ) { dn = xargs . dn ; } else if ( xargs . linkdn != NULL ) { dn = xargs . linkdn ; } else if ( standalone_principal_dn != NULL ) { dn = standalone_principal_dn ; } if ( subtreelist == NULL ) { st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ; if ( st ) <S2SV_StartBug> goto cleanup ; <S2SV_EndBug> } for ( tre = 0 ; tre < ntrees ; ++ tre ) { if ( subtreelist [ tre ] == NULL || strlen ( subtreelist [ tre ] ) == 0 ) { outofsubtree = FALSE ; break ; } else { dnlen = strlen ( dn ) ; subtreelen = strlen ( subtreelist [ tre ] ) ; if ( ( dnlen >= subtreelen ) && ( strcasecmp ( ( dn + dnlen - subtreelen ) , subtreelist [ tre ] ) == 0 ) ) { outofsubtree = FALSE ; break ; } } } if ( outofsubtree == TRUE ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"DN<S2SV_blank>is<S2SV_blank>out<S2SV_blank>of<S2SV_blank>the<S2SV_blank>realm<S2SV_blank>subtree\" ) ) ; goto cleanup ; } if ( standalone_principal_dn == NULL ) { char * attributes [ ] = { \"krbticketpolicyreference\" , \"krbprincipalname\" , NULL } ; ldap_msgfree ( result ) ; result = NULL ; LDAP_SEARCH_1 ( dn , LDAP_SCOPE_BASE , 0 , attributes , IGNORE_STATUS ) ; if ( st == LDAP_SUCCESS ) { ent = ldap_first_entry ( ld , result ) ; if ( ent != NULL ) { if ( ( values = ldap_get_values ( ld , ent , \"krbticketpolicyreference\" ) ) != NULL ) { ldap_value_free ( values ) ; } if ( ( values = ldap_get_values ( ld , ent , \"krbprincipalname\" ) ) != NULL ) { krb_identity_exists = TRUE ; ldap_value_free ( values ) ; } } } else { st = set_ldap_error ( context , st , OP_SEARCH ) ; goto cleanup ; } } } if ( xargs . dn != NULL && krb_identity_exists == TRUE ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"ldap<S2SV_blank>object<S2SV_blank>is<S2SV_blank>already<S2SV_blank>kerberized\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( xargs . linkdn != NULL ) { if ( optype == MODIFY_PRINCIPAL && kerberos_principal_object_type != KDB_STANDALONE_PRINCIPAL_OBJECT ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"link<S2SV_blank>information<S2SV_blank>can<S2SV_blank>not<S2SV_blank>be<S2SV_blank>set/updated<S2SV_blank>as<S2SV_blank>the<S2SV_blank>\" \"kerberos<S2SV_blank>principal<S2SV_blank>belongs<S2SV_blank>to<S2SV_blank>an<S2SV_blank>ldap<S2SV_blank>object\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } { char * * linkdns = NULL ; int j = 0 ; if ( ( st = krb5_get_linkdn ( context , entry , & linkdns ) ) != 0 ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Failed<S2SV_blank>getting<S2SV_blank>object<S2SV_blank>references\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( linkdns != NULL ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"kerberos<S2SV_blank>principal<S2SV_blank>is<S2SV_blank>already<S2SV_blank>linked<S2SV_blank>to<S2SV_blank>a<S2SV_blank>ldap<S2SV_blank>\" \"object\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; for ( j = 0 ; linkdns [ j ] != NULL ; ++ j ) free ( linkdns [ j ] ) ; free ( linkdns ) ; goto cleanup ; } } establish_links = TRUE ; } if ( entry -> mask & KADM5_LAST_SUCCESS ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> last_success ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastSuccessfulAuth\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_LAST_FAILED ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> last_failed ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastFailedAuth\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_FAIL_AUTH_COUNT ) { krb5_kvno fail_auth_count ; fail_auth_count = entry -> fail_auth_count ; if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) fail_auth_count ++ ; st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_REPLACE , fail_auth_count ) ; if ( st != 0 ) goto cleanup ; } else if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) { int attr_mask = 0 ; krb5_boolean has_fail_count ; st = krb5_get_attributes_mask ( context , entry , & attr_mask ) ; if ( st != 0 ) goto cleanup ; has_fail_count = ( ( attr_mask & KDB_FAIL_AUTH_COUNT_ATTR ) != 0 ) ; # ifdef LDAP_MOD_INCREMENT if ( ldap_server_handle -> server_info -> modify_increment && has_fail_count ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_INCREMENT , 1 ) ; if ( st != 0 ) goto cleanup ; } else { # endif if ( has_fail_count ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_DELETE , entry -> fail_auth_count ) ; if ( st != 0 ) goto cleanup ; } st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_ADD , entry -> fail_auth_count + 1 ) ; if ( st != 0 ) goto cleanup ; # ifdef LDAP_MOD_INCREMENT } # endif } else if ( optype == ADD_PRINCIPAL ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_ADD , 0 ) ; } if ( entry -> mask & KADM5_MAX_LIFE ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbmaxticketlife\" , LDAP_MOD_REPLACE , entry -> max_life ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_MAX_RLIFE ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbmaxrenewableage\" , LDAP_MOD_REPLACE , entry -> max_renewable_life ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_ATTRIBUTES ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbticketflags\" , LDAP_MOD_REPLACE , entry -> attributes ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_PRINCIPAL ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = user ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbprincipalname\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_PRINC_EXPIRE_TIME ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbprincipalexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_PW_EXPIRATION ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> pw_expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpasswordexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_POLICY || entry -> mask & KADM5_KEY_HIST ) { memset ( & princ_ent , 0 , sizeof ( princ_ent ) ) ; for ( tl_data = entry -> tl_data ; tl_data ; tl_data = tl_data -> tl_data_next ) { if ( tl_data -> tl_data_type == KRB5_TL_KADM_DATA ) { if ( ( st = krb5_lookup_tl_kadm_data ( tl_data , & princ_ent ) ) != 0 ) { goto cleanup ; } break ; } } } if ( entry -> mask & KADM5_POLICY ) { if ( princ_ent . aux_attributes & KADM5_POLICY ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( st = krb5_ldap_name_to_policydn ( context , princ_ent . policy , & polname ) ) != 0 ) goto cleanup ; strval [ 0 ] = polname ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } else { st = EINVAL ; k5_setmsg ( context , st , \"Password<S2SV_blank>policy<S2SV_blank>value<S2SV_blank>null\" ) ; goto cleanup ; } } else if ( entry -> mask & KADM5_LOAD && found_entry == TRUE ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_REPLACE , NULL ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_POLICY_CLR ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_DELETE , NULL ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_KEY_HIST ) { bersecretkey = krb5_encode_histkey ( & princ_ent ) ; if ( bersecretkey == NULL ) { st = ENOMEM ; goto cleanup ; } st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbpwdhistory\" , LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , bersecretkey ) ; if ( st != 0 ) goto cleanup ; free_berdata ( bersecretkey ) ; bersecretkey = NULL ; } if ( entry -> mask & KADM5_KEY_DATA || entry -> mask & KADM5_KVNO ) { krb5_kvno mkvno ; if ( ( st = krb5_dbe_lookup_mkvno ( context , entry , & mkvno ) ) != 0 ) goto cleanup ; bersecretkey = krb5_encode_krbsecretkey ( entry -> key_data , entry -> n_key_data , mkvno ) ; if ( bersecretkey == NULL ) { st = ENOMEM ; goto cleanup ; } if ( bersecretkey [ 0 ] != NULL || ! create_standalone ) { st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbprincipalkey\" , LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , bersecretkey ) ; if ( st != 0 ) goto cleanup ; } if ( ! ( entry -> mask & KADM5_PRINCIPAL ) ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> pw_expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpasswordexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } { krb5_timestamp last_pw_changed ; if ( ( st = krb5_dbe_lookup_last_pwd_change ( context , entry , & last_pw_changed ) ) != 0 ) goto cleanup ; memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( last_pw_changed ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastPwdChange\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } } st = update_ldap_mod_auth_ind ( context , entry , & mods ) ; if ( st != 0 ) goto cleanup ; if ( entry -> tl_data != NULL ) { int count = 0 ; struct berval * * ber_tl_data = NULL ; krb5_tl_data * ptr ; krb5_timestamp unlock_time ; for ( ptr = entry -> tl_data ; ptr != NULL ; ptr = ptr -> tl_data_next ) { if ( ptr -> tl_data_type == KRB5_TL_LAST_PWD_CHANGE # ifdef SECURID || ptr -> tl_data_type == KRB5_TL_DB_ARGS # endif || ptr -> tl_data_type == KRB5_TL_KADM_DATA || ptr -> tl_data_type == KDB_TL_USER_INFO || ptr -> tl_data_type == KRB5_TL_CONSTRAINED_DELEGATION_ACL || ptr -> tl_data_type == KRB5_TL_LAST_ADMIN_UNLOCK ) continue ; count ++ ; } if ( count != 0 ) { int j ; ber_tl_data = ( struct berval * * ) calloc ( count + 1 , sizeof ( struct berval * ) ) ; if ( ber_tl_data == NULL ) { st = ENOMEM ; goto cleanup ; } for ( j = 0 , ptr = entry -> tl_data ; ptr != NULL ; ptr = ptr -> tl_data_next ) { if ( ptr -> tl_data_type == KRB5_TL_LAST_PWD_CHANGE # ifdef SECURID || ptr -> tl_data_type == KRB5_TL_DB_ARGS # endif || ptr -> tl_data_type == KRB5_TL_KADM_DATA || ptr -> tl_data_type == KDB_TL_USER_INFO || ptr -> tl_data_type == KRB5_TL_CONSTRAINED_DELEGATION_ACL || ptr -> tl_data_type == KRB5_TL_LAST_ADMIN_UNLOCK ) continue ; if ( ( st = tl_data2berval ( ptr , & ber_tl_data [ j ] ) ) != 0 ) break ; j ++ ; } if ( st == 0 ) { ber_tl_data [ count ] = NULL ; st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbExtraData\" , LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , ber_tl_data ) ; } free_berdata ( ber_tl_data ) ; if ( st != 0 ) goto cleanup ; } if ( ( st = krb5_dbe_lookup_last_admin_unlock ( context , entry , & unlock_time ) ) != 0 ) goto cleanup ; if ( unlock_time != 0 ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( unlock_time ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastAdminUnlock\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } } if ( xargs . tktpolicydn != NULL ) { int tmask = 0 ; if ( strlen ( xargs . tktpolicydn ) != 0 ) { st = checkattributevalue ( ld , xargs . tktpolicydn , \"objectclass\" , policyclass , & tmask ) ; CHECK_CLASS_VALIDITY ( st , tmask , _ ( \"ticket<S2SV_blank>policy<S2SV_blank>object<S2SV_blank>value:<S2SV_blank>\" ) ) ; strval [ 0 ] = xargs . tktpolicydn ; strval [ 1 ] = NULL ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbticketpolicyreference\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } else { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbticketpolicyreference\" , LDAP_MOD_DELETE , NULL ) ) != 0 ) goto cleanup ; } } if ( establish_links == TRUE ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = xargs . linkdn ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbObjectReferences\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } if ( mods == NULL ) goto cleanup ; if ( create_standalone == TRUE ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = \"krbprincipal\" ; strval [ 1 ] = \"krbprincipalaux\" ; strval [ 2 ] = \"krbTicketPolicyAux\" ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"objectclass\" , LDAP_MOD_ADD , strval ) ) != 0 ) goto cleanup ; st = ldap_add_ext_s ( ld , standalone_principal_dn , mods , NULL , NULL ) ; if ( st == LDAP_ALREADY_EXISTS && entry -> mask & KADM5_LOAD ) { st = ldap_delete_ext_s ( ld , standalone_principal_dn , NULL , NULL ) ; if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Principal<S2SV_blank>delete<S2SV_blank>failed<S2SV_blank>(trying<S2SV_blank>to<S2SV_blank>replace<S2SV_blank>\" \"entry):<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_ADD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } else { st = ldap_add_ext_s ( ld , standalone_principal_dn , mods , NULL , NULL ) ; } } if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Principal<S2SV_blank>add<S2SV_blank>failed:<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_ADD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } } else { { char * attrvalues [ ] = { \"krbprincipalaux\" , \"krbTicketPolicyAux\" , NULL } ; int p , q , r = 0 , amask = 0 ; if ( ( st = checkattributevalue ( ld , ( xargs . dn ) ? xargs . dn : principal_dn , \"objectclass\" , attrvalues , & amask ) ) != 0 ) goto cleanup ; memset ( strval , 0 , sizeof ( strval ) ) ; for ( p = 1 , q = 0 ; p <= 2 ; p <<= 1 , ++ q ) { if ( ( p & amask ) == 0 ) strval [ r ++ ] = attrvalues [ q ] ; } if ( r != 0 ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"objectclass\" , LDAP_MOD_ADD , strval ) ) != 0 ) goto cleanup ; } } if ( xargs . dn != NULL ) st = ldap_modify_ext_s ( ld , xargs . dn , mods , NULL , NULL ) ; else st = ldap_modify_ext_s ( ld , principal_dn , mods , NULL , NULL ) ; if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"User<S2SV_blank>modification<S2SV_blank>failed:<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_MOD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) entry -> fail_auth_count ++ ; } cleanup : if ( user ) free ( user ) ; if ( filtuser ) free ( filtuser ) ; free_xargs ( xargs ) ; if ( standalone_principal_dn ) free ( standalone_principal_dn ) ; if ( principal_dn ) free ( principal_dn ) ; if ( polname != NULL ) free ( polname ) ; for ( tre = 0 ; tre < ntrees ; tre ++ ) free ( subtreelist [ tre ] ) ; free ( subtreelist ) ; if ( subtree ) free ( subtree ) ; if ( bersecretkey ) { for ( l = 0 ; bersecretkey [ l ] ; ++ l ) { if ( bersecretkey [ l ] -> bv_val ) free ( bersecretkey [ l ] -> bv_val ) ; free ( bersecretkey [ l ] ) ; } free ( bersecretkey ) ; } if ( keys ) free ( keys ) ; ldap_mods_free ( mods , 1 ) ; ldap_osa_free_princ_ent ( & princ_ent ) ; ldap_msgfree ( result ) ; krb5_ldap_put_handle_to_pool ( ldap_context , ldap_server_handle ) ; return ( st ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; char <S2SV_ModEnd> * strval [ <S2SV_ModStart> FALSE ; krb5_boolean <S2SV_ModEnd> establish_links = FALSE <S2SV_ModStart> TRUE ) { if ( subtreelist == NULL ) { st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ; if ( st ) goto cleanup ; } st = validate_xargs ( context , ldap_server_handle , & xargs , standalone_principal_dn , subtreelist , <S2SV_ModEnd> ntrees ) ; <S2SV_ModStart> ( st ) <S2SV_ModEnd> goto cleanup ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5551\n\n```\nCWE-000 int simple_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int error ; if ( type == ACL_TYPE_ACCESS ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> <S2SV_StartBug> if ( error < 0 ) <S2SV_EndBug> return 0 ; if ( error == 0 ) acl = NULL ; } inode -> i_ctime = current_time ( inode ) ; set_cached_acl ( inode , type , acl ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl <S2SV_ModStart> if ( error ) return error <S2SV_ModEnd> ; } inode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 static int read_private_key ( RSA * rsa ) { int r ; sc_path_t path ; sc_file_t * file ; const sc_acl_entry_t * e ; u8 buf [ 2048 ] , * p = buf ; size_t bufsize , keysize ; r = select_app_df ( ) ; if ( r ) return 1 ; sc_format_path ( \"I0012\" , & path ) ; r = sc_select_file ( card , & path , & file ) ; if ( r ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>select<S2SV_blank>private<S2SV_blank>key<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , sc_strerror ( r ) ) ; return 2 ; } e = sc_file_get_acl_entry ( file , SC_AC_OP_READ ) ; if ( e == NULL || e -> method == SC_AC_NEVER ) return 10 ; <S2SV_StartBug> bufsize = file -> size ; <S2SV_EndBug> sc_file_free ( file ) ; r = sc_read_binary ( card , 0 , buf , bufsize , 0 ) ; if ( r < 0 ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>private<S2SV_blank>key<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , sc_strerror ( r ) ) ; return 2 ; } bufsize = r ; do { if ( bufsize < 4 ) return 3 ; keysize = ( p [ 0 ] << 8 ) | p [ 1 ] ; if ( keysize == 0 ) break ; if ( keysize < 3 ) return 3 ; if ( p [ 2 ] == opt_key_num ) break ; p += keysize ; bufsize -= keysize ; } while ( 1 ) ; if ( keysize == 0 ) { printf ( \"Key<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>not<S2SV_blank>found.\\\\n\" , opt_key_num ) ; return 2 ; } return parse_private_key ( p , keysize , rsa ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bufsize = MIN ( <S2SV_ModStart> file -> size , sizeof buf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27638\n\n```\nCWE-119 static inline void handle_socket_receive_unknown ( fastd_socket_t * sock , const fastd_peer_address_t * local_addr , const fastd_peer_address_t * remote_addr , fastd_buffer_t * buffer ) { const uint8_t * packet_type = buffer -> data ; switch ( * packet_type ) { case PACKET_DATA : fastd_buffer_free ( buffer ) ; if ( ! backoff_unknown ( remote_addr ) ) { pr_debug ( \"unexpectedly<S2SV_blank>received<S2SV_blank>payload<S2SV_blank>data<S2SV_blank>from<S2SV_blank>unknown<S2SV_blank>address<S2SV_blank>%I\" , remote_addr ) ; conf . protocol -> handshake_init ( sock , local_addr , remote_addr , NULL ) ; } break ; case PACKET_HANDSHAKE : fastd_handshake_handle ( sock , local_addr , remote_addr , NULL , buffer ) ; <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer ) ; break ; default : fastd_buffer_free ( buffer ) ; pr_debug ( \"received<S2SV_blank>packet<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>type<S2SV_blank>from<S2SV_blank>unknown<S2SV_blank>address<S2SV_blank>%I\" , remote_addr ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static LAYER_CONTEXT * get_layer_context ( SVC * svc ) { <S2SV_EndBug> <S2SV_StartBug> return svc -> number_temporal_layers > 1 ? <S2SV_EndBug> & svc -> layer_context [ svc -> temporal_layer_id ] : <S2SV_StartBug> & svc -> layer_context [ svc -> spatial_layer_id ] ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * get_layer_context ( VP9_COMP * const cpi ) { if ( is_one_pass_cbr_svc ( cpi ) ) return & cpi -> svc . layer_context [ cpi -> svc . spatial_layer_id * cpi -> svc . number_temporal_layers + cpi -> svc . temporal_layer_id ] ; else return ( cpi -> svc . <S2SV_ModEnd> number_temporal_layers > 1 <S2SV_ModStart> number_temporal_layers > 1 && cpi -> oxcf . rc_mode == VPX_CBR ) ? & cpi -> svc . layer_context [ cpi -> svc . <S2SV_ModEnd> temporal_layer_id ] : <S2SV_ModStart> ] : & cpi -> svc . layer_context [ cpi -> svc . <S2SV_ModEnd> spatial_layer_id ] ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 <S2SV_StartBug> void unix_inflight ( struct file * fp ) <S2SV_EndBug> { struct sock * s = unix_get_socket ( fp ) ; spin_lock ( & unix_gc_lock ) ; if ( s ) { struct unix_sock * u = unix_sk ( s ) ; if ( atomic_long_inc_return ( & u -> inflight ) == 1 ) { BUG_ON ( ! list_empty ( & u -> link ) ) ; list_add_tail ( & u -> link , & gc_inflight_list ) ; } else { BUG_ON ( list_empty ( & u -> link ) ) ; } unix_tot_inflight ++ ; } <S2SV_StartBug> fp -> f_cred -> user -> unix_inflight ++ ; <S2SV_EndBug> spin_unlock ( & unix_gc_lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void unix_inflight ( struct user_struct * user , <S2SV_ModStart> ++ ; } <S2SV_ModEnd> user -> unix_inflight\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11379\n\n```\nCWE-125 static int get_debug_info ( struct PE_ ( r_bin_pe_obj_t ) * bin , PE_ ( image_debug_directory_entry ) * dbg_dir_entry , ut8 * dbg_data , int dbg_data_len , SDebugInfo * res ) { # define SIZEOF_FILE_NAME 255 int i = 0 ; const char * basename ; if ( ! dbg_data ) { return 0 ; } switch ( dbg_dir_entry -> Type ) { case IMAGE_DEBUG_TYPE_CODEVIEW : if ( ! strncmp ( ( char * ) dbg_data , \"RSDS\" , 4 ) ) { SCV_RSDS_HEADER rsds_hdr ; init_rsdr_hdr ( & rsds_hdr ) ; if ( ! get_rsds ( dbg_data , dbg_data_len , & rsds_hdr ) ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>read<S2SV_blank>PE<S2SV_blank>debug<S2SV_blank>info\\\\n\" ) ; return 0 ; } snprintf ( res -> guidstr , GUIDSTR_LEN , \"%08x%04x%04x%02x%02x%02x%02x%02x%02x%02x%02x%x\" , rsds_hdr . guid . data1 , rsds_hdr . guid . data2 , rsds_hdr . guid . data3 , rsds_hdr . guid . data4 [ 0 ] , rsds_hdr . guid . data4 [ 1 ] , rsds_hdr . guid . data4 [ 2 ] , rsds_hdr . guid . data4 [ 3 ] , rsds_hdr . guid . data4 [ 4 ] , rsds_hdr . guid . data4 [ 5 ] , rsds_hdr . guid . data4 [ 6 ] , rsds_hdr . guid . data4 [ 7 ] , rsds_hdr . age ) ; basename = r_file_basename ( ( char * ) rsds_hdr . file_name ) ; strncpy ( res -> file_name , ( const char * ) basename , sizeof ( res -> file_name ) ) ; res -> file_name [ sizeof ( res -> file_name ) - 1 ] = 0 ; rsds_hdr . free ( ( struct SCV_RSDS_HEADER * ) & rsds_hdr ) ; } else if ( strncmp ( ( const char * ) dbg_data , \"NB10\" , 4 ) == 0 ) { <S2SV_StartBug> SCV_NB10_HEADER nb10_hdr ; <S2SV_EndBug> init_cv_nb10_header ( & nb10_hdr ) ; get_nb10 ( dbg_data , & nb10_hdr ) ; snprintf ( res -> guidstr , sizeof ( res -> guidstr ) , <S2SV_StartBug> \"%x%x\" , nb10_hdr . timestamp , nb10_hdr . age ) ; <S2SV_EndBug> strncpy ( res -> file_name , ( const char * ) <S2SV_StartBug> nb10_hdr . file_name , sizeof ( res -> file_name ) - 1 ) ; <S2SV_EndBug> res -> file_name [ sizeof ( res -> file_name ) - 1 ] = 0 ; nb10_hdr . free ( ( struct SCV_NB10_HEADER * ) & nb10_hdr ) ; } else { bprintf ( \"CodeView<S2SV_blank>section<S2SV_blank>not<S2SV_blank>NB10<S2SV_blank>or<S2SV_blank>RSDS\\\\n\" ) ; return 0 ; } break ; default : return 0 ; } while ( i < 33 ) { res -> guidstr [ i ] = toupper ( ( int ) res -> guidstr [ i ] ) ; i ++ ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( dbg_data_len < 20 ) { eprintf ( \"Truncated<S2SV_blank>NB10<S2SV_blank>entry,<S2SV_blank>not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>to<S2SV_blank>parse\\\\n\" ) ; return 0 ; } SCV_NB10_HEADER nb10_hdr = { { 0 } } <S2SV_ModEnd> ; init_cv_nb10_header ( <S2SV_ModStart> age ) ; res -> file_name [ 0 ] = 0 ; if ( nb10_hdr . file_name ) { <S2SV_ModStart> 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1915\n\n```\nCWE-611 void init_directory_config ( directory_config * dcfg ) { if ( dcfg == NULL ) return ; if ( dcfg -> is_enabled == NOT_SET ) dcfg -> is_enabled = 0 ; if ( dcfg -> reqbody_access == NOT_SET ) dcfg -> reqbody_access = 0 ; if ( dcfg -> reqintercept_oe == NOT_SET ) dcfg -> reqintercept_oe = 0 ; if ( dcfg -> reqbody_buffering == NOT_SET ) dcfg -> reqbody_buffering = REQUEST_BODY_FORCEBUF_OFF ; if ( dcfg -> reqbody_inmemory_limit == NOT_SET ) dcfg -> reqbody_inmemory_limit = REQUEST_BODY_DEFAULT_INMEMORY_LIMIT ; if ( dcfg -> reqbody_limit == NOT_SET ) dcfg -> reqbody_limit = REQUEST_BODY_DEFAULT_LIMIT ; if ( dcfg -> reqbody_no_files_limit == NOT_SET ) dcfg -> reqbody_no_files_limit = REQUEST_BODY_NO_FILES_DEFAULT_LIMIT ; if ( dcfg -> resbody_access == NOT_SET ) dcfg -> resbody_access = 0 ; if ( dcfg -> of_limit == NOT_SET ) dcfg -> of_limit = RESPONSE_BODY_DEFAULT_LIMIT ; if ( dcfg -> if_limit_action == NOT_SET ) dcfg -> if_limit_action = REQUEST_BODY_LIMIT_ACTION_REJECT ; if ( dcfg -> of_limit_action == NOT_SET ) dcfg -> of_limit_action = RESPONSE_BODY_LIMIT_ACTION_REJECT ; if ( dcfg -> of_mime_types == NOT_SET_P ) { dcfg -> of_mime_types = apr_table_make ( dcfg -> mp , 3 ) ; if ( dcfg -> of_mime_types_cleared != 1 ) { apr_table_setn ( dcfg -> of_mime_types , \"text/plain\" , \"1\" ) ; apr_table_setn ( dcfg -> of_mime_types , \"text/html\" , \"1\" ) ; } } if ( dcfg -> debuglog_fd == NOT_SET_P ) dcfg -> debuglog_fd = NULL ; if ( dcfg -> debuglog_name == NOT_SET_P ) dcfg -> debuglog_name = NULL ; if ( dcfg -> debuglog_level == NOT_SET ) dcfg -> debuglog_level = 0 ; if ( dcfg -> cookie_format == NOT_SET ) dcfg -> cookie_format = 0 ; if ( dcfg -> argument_separator == NOT_SET ) dcfg -> argument_separator = '&' ; if ( dcfg -> cookiev0_separator == NOT_SET_P ) dcfg -> cookiev0_separator = NULL ; if ( dcfg -> rule_inheritance == NOT_SET ) dcfg -> rule_inheritance = 1 ; if ( dcfg -> auditlog_flag == NOT_SET ) dcfg -> auditlog_flag = 0 ; if ( dcfg -> auditlog_type == NOT_SET ) dcfg -> auditlog_type = AUDITLOG_SERIAL ; if ( dcfg -> max_rule_time == NOT_SET ) dcfg -> max_rule_time = 0 ; if ( dcfg -> auditlog_dirperms == NOT_SET ) dcfg -> auditlog_dirperms = CREATEMODE_DIR ; if ( dcfg -> auditlog_fileperms == NOT_SET ) dcfg -> auditlog_fileperms = CREATEMODE ; if ( dcfg -> auditlog_fd == NOT_SET_P ) dcfg -> auditlog_fd = NULL ; if ( dcfg -> auditlog2_fd == NOT_SET_P ) dcfg -> auditlog2_fd = NULL ; if ( dcfg -> auditlog_name == NOT_SET_P ) dcfg -> auditlog_name = NULL ; if ( dcfg -> auditlog2_name == NOT_SET_P ) dcfg -> auditlog2_name = NULL ; if ( dcfg -> auditlog_storage_dir == NOT_SET_P ) dcfg -> auditlog_storage_dir = NULL ; if ( dcfg -> auditlog_parts == NOT_SET_P ) dcfg -> auditlog_parts = \"ABCFHZ\" ; if ( dcfg -> auditlog_relevant_regex == NOT_SET_P ) dcfg -> auditlog_relevant_regex = NULL ; if ( dcfg -> tmp_dir == NOT_SET_P ) dcfg -> tmp_dir = guess_tmp_dir ( dcfg -> mp ) ; if ( dcfg -> upload_dir == NOT_SET_P ) dcfg -> upload_dir = NULL ; if ( dcfg -> upload_keep_files == NOT_SET ) dcfg -> upload_keep_files = KEEP_FILES_OFF ; if ( dcfg -> upload_validates_files == NOT_SET ) dcfg -> upload_validates_files = 0 ; if ( dcfg -> upload_filemode == NOT_SET ) dcfg -> upload_filemode = 0600 ; if ( dcfg -> upload_file_limit == NOT_SET ) dcfg -> upload_file_limit = 100 ; if ( dcfg -> data_dir == NOT_SET_P ) dcfg -> data_dir = NULL ; if ( dcfg -> webappid == NOT_SET_P ) dcfg -> webappid = \"default\" ; if ( dcfg -> sensor_id == NOT_SET_P ) dcfg -> sensor_id = \"default\" ; if ( dcfg -> httpBlkey == NOT_SET_P ) dcfg -> httpBlkey = NULL ; if ( dcfg -> content_injection_enabled == NOT_SET ) dcfg -> content_injection_enabled = 0 ; if ( dcfg -> stream_inbody_inspection == NOT_SET ) dcfg -> stream_inbody_inspection = 0 ; if ( dcfg -> stream_outbody_inspection == NOT_SET ) dcfg -> stream_outbody_inspection = 0 ; if ( dcfg -> geo == NOT_SET_P ) dcfg -> geo = NULL ; if ( dcfg -> gsb == NOT_SET_P ) dcfg -> gsb = NULL ; if ( dcfg -> u_map == NOT_SET_P ) dcfg -> u_map = NULL ; if ( dcfg -> cache_trans == NOT_SET ) dcfg -> cache_trans = MODSEC_CACHE_DISABLED ; if ( dcfg -> cache_trans_incremental == NOT_SET ) dcfg -> cache_trans_incremental = 0 ; if ( dcfg -> cache_trans_min == ( apr_size_t ) NOT_SET ) dcfg -> cache_trans_min = 32 ; if ( dcfg -> cache_trans_max == ( apr_size_t ) NOT_SET ) dcfg -> cache_trans_max = 1024 ; if ( dcfg -> cache_trans_maxitems == ( apr_size_t ) NOT_SET ) dcfg -> cache_trans_maxitems = 512 ; if ( dcfg -> request_encoding == NOT_SET_P ) dcfg -> request_encoding = NULL ; if ( dcfg -> disable_backend_compression == NOT_SET ) dcfg -> disable_backend_compression = 0 ; if ( dcfg -> col_timeout == NOT_SET ) dcfg -> col_timeout = 3600 ; if ( dcfg -> crypto_key == NOT_SET_P ) dcfg -> crypto_key = getkey ( dcfg -> mp ) ; if ( dcfg -> crypto_key_len == NOT_SET ) dcfg -> crypto_key_len = strlen ( dcfg -> crypto_key ) ; if ( dcfg -> crypto_key_add == NOT_SET ) dcfg -> crypto_key_add = HASH_KEYONLY ; if ( dcfg -> crypto_param_name == NOT_SET_P ) dcfg -> crypto_param_name = \"crypt\" ; if ( dcfg -> hash_is_enabled == NOT_SET ) dcfg -> hash_is_enabled = HASH_DISABLED ; if ( dcfg -> hash_enforcement == NOT_SET ) dcfg -> hash_enforcement = HASH_DISABLED ; if ( dcfg -> crypto_hash_href_rx == NOT_SET ) dcfg -> crypto_hash_href_rx = 0 ; if ( dcfg -> crypto_hash_faction_rx == NOT_SET ) dcfg -> crypto_hash_faction_rx = 0 ; if ( dcfg -> crypto_hash_location_rx == NOT_SET ) dcfg -> crypto_hash_location_rx = 0 ; if ( dcfg -> crypto_hash_iframesrc_rx == NOT_SET ) dcfg -> crypto_hash_iframesrc_rx = 0 ; if ( dcfg -> crypto_hash_framesrc_rx == NOT_SET ) dcfg -> crypto_hash_framesrc_rx = 0 ; if ( dcfg -> crypto_hash_href_pm == NOT_SET ) dcfg -> crypto_hash_href_pm = 0 ; if ( dcfg -> crypto_hash_faction_pm == NOT_SET ) dcfg -> crypto_hash_faction_pm = 0 ; if ( dcfg -> crypto_hash_location_pm == NOT_SET ) dcfg -> crypto_hash_location_pm = 0 ; if ( dcfg -> crypto_hash_iframesrc_pm == NOT_SET ) dcfg -> crypto_hash_iframesrc_pm = 0 ; if ( dcfg -> crypto_hash_framesrc_pm == NOT_SET ) dcfg -> crypto_hash_framesrc_pm = 0 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; if ( dcfg -> xml_external_entity == NOT_SET ) dcfg -> xml_external_entity = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 void Com_WriteConfig_f ( void ) { char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { <S2SV_StartBug> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; <S2SV_EndBug> return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; COM_DefaultExtension ( filename , sizeof ( filename ) , \".cfg\" ) ; Com_Printf ( \"Writing<S2SV_blank>%s.\\\\n\" , filename ) ; Com_WriteConfigToFile ( filename ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; return ; } if ( ! COM_CompareExtension ( filename , \".cfg\" ) ) { Com_Printf ( \"Com_WriteConfig_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".cfg\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15148\n\n```\nCWE-787 size_t OpenMP4SourceUDTA ( char * filename ) { mp4object * mp4 = ( mp4object * ) malloc ( sizeof ( mp4object ) ) ; if ( mp4 == NULL ) return 0 ; memset ( mp4 , 0 , sizeof ( mp4object ) ) ; # ifdef _WINDOWS fopen_s ( & mp4 -> mediafp , filename , \"rb\" ) ; # else mp4 -> mediafp = fopen ( filename , \"rb\" ) ; # endif if ( mp4 -> mediafp ) { <S2SV_StartBug> uint32_t qttag , qtsize32 , len ; <S2SV_EndBug> int32_t nest = 0 ; uint64_t nestsize [ MAX_NEST_LEVEL ] = { 0 } ; uint64_t lastsize = 0 , qtsize ; do { len = fread ( & qtsize32 , 1 , 4 , mp4 -> mediafp ) ; len += fread ( & qttag , 1 , 4 , mp4 -> mediafp ) ; if ( len == 8 ) { if ( ! GPMF_VALID_FOURCC ( qttag ) ) { <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , lastsize - 8 - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( lastsize - 8 ) ; continue ; } qtsize32 = BYTESWAP32 ( qtsize32 ) ; if ( qtsize32 == 1 ) { fread ( & qtsize , 1 , 8 , mp4 -> mediafp ) ; qtsize = BYTESWAP64 ( qtsize ) - 8 ; } else qtsize = qtsize32 ; nest ++ ; if ( qtsize < 8 ) break ; if ( nest >= MAX_NEST_LEVEL ) break ; nestsize [ nest ] = qtsize ; lastsize = qtsize ; if ( qttag == MAKEID ( 'm' , 'd' , 'a' , 't' ) || qttag == MAKEID ( 'f' , 't' , 'y' , 'p' ) ) { <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; continue ; } if ( qttag == MAKEID ( 'G' , 'P' , 'M' , 'F' ) ) { mp4 -> videolength += 1.0 ; mp4 -> metadatalength += 1.0 ; mp4 -> indexcount = ( int ) mp4 -> metadatalength ; mp4 -> metasizes = ( uint32_t * ) malloc ( mp4 -> indexcount * 4 + 4 ) ; memset ( mp4 -> metasizes , 0 , mp4 -> indexcount * 4 + 4 ) ; mp4 -> metaoffsets = ( uint64_t * ) malloc ( mp4 -> indexcount * 8 + 8 ) ; memset ( mp4 -> metaoffsets , 0 , mp4 -> indexcount * 8 + 8 ) ; mp4 -> metasizes [ 0 ] = ( int ) qtsize - 8 ; mp4 -> metaoffsets [ 0 ] = ftell ( mp4 -> mediafp ) ; mp4 -> metasize_count = 1 ; return ( size_t ) mp4 ; } if ( qttag != MAKEID ( 'm' , 'o' , 'o' , 'v' ) && qttag != MAKEID ( 'u' , 'd' , 't' , 'a' ) ) { <S2SV_StartBug> LONGSEEK ( mp4 -> mediafp , qtsize - 8 , SEEK_CUR ) ; <S2SV_EndBug> NESTSIZE ( qtsize ) ; continue ; } else { NESTSIZE ( 8 ) ; } } } while ( len > 0 ) ; } return ( size_t ) mp4 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> qttag , qtsize32 ; size_t <S2SV_ModEnd> len ; int32_t <S2SV_ModStart> ) ) { LongSeek ( mp4 <S2SV_ModEnd> , lastsize - <S2SV_ModStart> 8 - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> ) ) { LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE <S2SV_ModStart> ) ) { LongSeek ( mp4 <S2SV_ModEnd> , qtsize - <S2SV_ModStart> qtsize - 8 <S2SV_ModEnd> ) ; NESTSIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1826\n\n```\nCWE-000 static struct sk_buff * xfrm_state_netlink ( struct sk_buff * in_skb , struct xfrm_state * x , u32 seq ) { struct xfrm_dump_info info ; <S2SV_StartBug> struct sk_buff * skb ; <S2SV_EndBug> skb = nlmsg_new ( NLMSG_DEFAULT_SIZE , GFP_ATOMIC ) ; if ( ! skb ) return ERR_PTR ( - ENOMEM ) ; info . in_skb = in_skb ; info . out_skb = skb ; info . nlmsg_seq = seq ; info . nlmsg_flags = 0 ; <S2SV_StartBug> if ( dump_one_state ( x , 0 , & info ) ) { <S2SV_EndBug> kfree_skb ( skb ) ; <S2SV_StartBug> return NULL ; <S2SV_EndBug> } return skb ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk_buff * skb ; int err <S2SV_ModStart> = 0 ; err = <S2SV_ModEnd> dump_one_state ( x <S2SV_ModStart> & info ) ; if ( err <S2SV_ModStart> ) ; return ERR_PTR ( err ) <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum lquery_in ( PG_FUNCTION_ARGS ) { char * buf = ( char * ) PG_GETARG_POINTER ( 0 ) ; char * ptr ; int num = 0 , totallen = 0 , numOR = 0 ; int state = LQPRS_WAITLEVEL ; lquery * result ; nodeitem * lptr = NULL ; lquery_level * cur , * curqlevel , * tmpql ; lquery_variant * lrptr = NULL ; bool hasnot = false ; bool wasbad = false ; int charlen ; int pos = 0 ; ptr = buf ; while ( * ptr ) { charlen = pg_mblen ( ptr ) ; if ( charlen == 1 ) { if ( t_iseq ( ptr , '.' ) ) num ++ ; else if ( t_iseq ( ptr , '|' ) ) numOR ++ ; } ptr += charlen ; } <S2SV_StartBug> num ++ ; <S2SV_EndBug> curqlevel = tmpql = ( lquery_level * ) palloc0 ( ITEMSIZE * num ) ; ptr = buf ; while ( * ptr ) { charlen = pg_mblen ( ptr ) ; if ( state == LQPRS_WAITLEVEL ) { if ( ISALNUM ( ptr ) ) { GETVAR ( curqlevel ) = lptr = ( nodeitem * ) palloc0 ( sizeof ( nodeitem ) * ( numOR + 1 ) ) ; lptr -> start = ptr ; state = LQPRS_WAITDELIM ; curqlevel -> numvar = 1 ; } else if ( charlen == 1 && t_iseq ( ptr , '!' ) ) { GETVAR ( curqlevel ) = lptr = ( nodeitem * ) palloc0 ( sizeof ( nodeitem ) * ( numOR + 1 ) ) ; lptr -> start = ptr + 1 ; state = LQPRS_WAITDELIM ; curqlevel -> numvar = 1 ; curqlevel -> flag |= LQL_NOT ; hasnot = true ; } else if ( charlen == 1 && t_iseq ( ptr , '*' ) ) state = LQPRS_WAITOPEN ; else UNCHAR ; } else if ( state == LQPRS_WAITVAR ) { if ( ISALNUM ( ptr ) ) { lptr ++ ; lptr -> start = ptr ; state = LQPRS_WAITDELIM ; curqlevel -> numvar ++ ; } else UNCHAR ; } else if ( state == LQPRS_WAITDELIM ) { if ( charlen == 1 && t_iseq ( ptr , '@' ) ) { if ( lptr -> start == ptr ) UNCHAR ; lptr -> flag |= LVAR_INCASE ; curqlevel -> flag |= LVAR_INCASE ; } else if ( charlen == 1 && t_iseq ( ptr , '*' ) ) { if ( lptr -> start == ptr ) UNCHAR ; lptr -> flag |= LVAR_ANYEND ; curqlevel -> flag |= LVAR_ANYEND ; } else if ( charlen == 1 && t_iseq ( ptr , '%' ) ) { if ( lptr -> start == ptr ) UNCHAR ; lptr -> flag |= LVAR_SUBLEXEME ; curqlevel -> flag |= LVAR_SUBLEXEME ; } else if ( charlen == 1 && t_iseq ( ptr , '|' ) ) { lptr -> len = ptr - lptr -> start - ( ( lptr -> flag & LVAR_SUBLEXEME ) ? 1 : 0 ) - ( ( lptr -> flag & LVAR_INCASE ) ? 1 : 0 ) - ( ( lptr -> flag & LVAR_ANYEND ) ? 1 : 0 ) ; if ( lptr -> wlen > 255 ) ereport ( ERROR , ( errcode ( ERRCODE_NAME_TOO_LONG ) , errmsg ( \"name<S2SV_blank>of<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) , errdetail ( \"Name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>\" \"be<S2SV_blank><<S2SV_blank>256,<S2SV_blank>in<S2SV_blank>position<S2SV_blank>%d.\" , lptr -> wlen , pos ) ) ) ; state = LQPRS_WAITVAR ; } else if ( charlen == 1 && t_iseq ( ptr , '.' ) ) { lptr -> len = ptr - lptr -> start - ( ( lptr -> flag & LVAR_SUBLEXEME ) ? 1 : 0 ) - ( ( lptr -> flag & LVAR_INCASE ) ? 1 : 0 ) - ( ( lptr -> flag & LVAR_ANYEND ) ? 1 : 0 ) ; if ( lptr -> wlen > 255 ) ereport ( ERROR , ( errcode ( ERRCODE_NAME_TOO_LONG ) , errmsg ( \"name<S2SV_blank>of<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) , errdetail ( \"Name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>\" \"be<S2SV_blank><<S2SV_blank>256,<S2SV_blank>in<S2SV_blank>position<S2SV_blank>%d.\" , lptr -> wlen , pos ) ) ) ; state = LQPRS_WAITLEVEL ; curqlevel = NEXTLEV ( curqlevel ) ; } else if ( ISALNUM ( ptr ) ) { if ( lptr -> flag ) UNCHAR ; } else UNCHAR ; } else if ( state == LQPRS_WAITOPEN ) { if ( charlen == 1 && t_iseq ( ptr , '{' ) ) state = LQPRS_WAITFNUM ; else if ( charlen == 1 && t_iseq ( ptr , '.' ) ) { curqlevel -> low = 0 ; curqlevel -> high = 0xffff ; curqlevel = NEXTLEV ( curqlevel ) ; state = LQPRS_WAITLEVEL ; } else UNCHAR ; } else if ( state == LQPRS_WAITFNUM ) { if ( charlen == 1 && t_iseq ( ptr , ',' ) ) state = LQPRS_WAITSNUM ; else if ( t_isdigit ( ptr ) ) { curqlevel -> low = atoi ( ptr ) ; state = LQPRS_WAITND ; } else UNCHAR ; } else if ( state == LQPRS_WAITSNUM ) { if ( t_isdigit ( ptr ) ) { curqlevel -> high = atoi ( ptr ) ; state = LQPRS_WAITCLOSE ; } else if ( charlen == 1 && t_iseq ( ptr , '}' ) ) { curqlevel -> high = 0xffff ; state = LQPRS_WAITEND ; } else UNCHAR ; } else if ( state == LQPRS_WAITCLOSE ) { if ( charlen == 1 && t_iseq ( ptr , '}' ) ) state = LQPRS_WAITEND ; else if ( ! t_isdigit ( ptr ) ) UNCHAR ; } else if ( state == LQPRS_WAITND ) { if ( charlen == 1 && t_iseq ( ptr , '}' ) ) { curqlevel -> high = curqlevel -> low ; state = LQPRS_WAITEND ; } else if ( charlen == 1 && t_iseq ( ptr , ',' ) ) state = LQPRS_WAITSNUM ; else if ( ! t_isdigit ( ptr ) ) UNCHAR ; } else if ( state == LQPRS_WAITEND ) { if ( charlen == 1 && t_iseq ( ptr , '.' ) ) { state = LQPRS_WAITLEVEL ; curqlevel = NEXTLEV ( curqlevel ) ; } else UNCHAR ; } else elog ( ERROR , \"internal<S2SV_blank>error<S2SV_blank>in<S2SV_blank>parser\" ) ; ptr += charlen ; if ( state == LQPRS_WAITDELIM ) lptr -> wlen ++ ; pos ++ ; } if ( state == LQPRS_WAITDELIM ) { if ( lptr -> start == ptr ) ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) , errdetail ( \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>line.\" ) ) ) ; lptr -> len = ptr - lptr -> start - ( ( lptr -> flag & LVAR_SUBLEXEME ) ? 1 : 0 ) - ( ( lptr -> flag & LVAR_INCASE ) ? 1 : 0 ) - ( ( lptr -> flag & LVAR_ANYEND ) ? 1 : 0 ) ; if ( lptr -> len == 0 ) ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) , errdetail ( \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>line.\" ) ) ) ; if ( lptr -> wlen > 255 ) ereport ( ERROR , ( errcode ( ERRCODE_NAME_TOO_LONG ) , errmsg ( \"name<S2SV_blank>of<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) , errdetail ( \"Name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>\" \"be<S2SV_blank><<S2SV_blank>256,<S2SV_blank>in<S2SV_blank>position<S2SV_blank>%d.\" , lptr -> wlen , pos ) ) ) ; } else if ( state == LQPRS_WAITOPEN ) curqlevel -> high = 0xffff ; else if ( state != LQPRS_WAITEND ) ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) , errdetail ( \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>line.\" ) ) ) ; curqlevel = tmpql ; totallen = LQUERY_HDRSIZE ; while ( ( char * ) curqlevel - ( char * ) tmpql < num * ITEMSIZE ) { totallen += LQL_HDRSIZE ; if ( curqlevel -> numvar ) { lptr = GETVAR ( curqlevel ) ; while ( lptr - GETVAR ( curqlevel ) < curqlevel -> numvar ) { totallen += MAXALIGN ( LVAR_HDRSIZE + lptr -> len ) ; lptr ++ ; } } else if ( curqlevel -> low > curqlevel -> high ) ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) , errdetail ( \"Low<S2SV_blank>limit(%d)<S2SV_blank>is<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>upper(%d).\" , curqlevel -> low , curqlevel -> high ) ) ) ; curqlevel = NEXTLEV ( curqlevel ) ; } result = ( lquery * ) palloc0 ( totallen ) ; SET_VARSIZE ( result , totallen ) ; result -> numlevel = num ; result -> firstgood = 0 ; result -> flag = 0 ; if ( hasnot ) result -> flag |= LQUERY_HASNOT ; cur = LQUERY_FIRST ( result ) ; curqlevel = tmpql ; while ( ( char * ) curqlevel - ( char * ) tmpql < num * ITEMSIZE ) { memcpy ( cur , curqlevel , LQL_HDRSIZE ) ; cur -> totallen = LQL_HDRSIZE ; if ( curqlevel -> numvar ) { lrptr = LQL_FIRST ( cur ) ; lptr = GETVAR ( curqlevel ) ; while ( lptr - GETVAR ( curqlevel ) < curqlevel -> numvar ) { cur -> totallen += MAXALIGN ( LVAR_HDRSIZE + lptr -> len ) ; lrptr -> len = lptr -> len ; lrptr -> flag = lptr -> flag ; lrptr -> val = ltree_crc32_sz ( lptr -> start , lptr -> len ) ; memcpy ( lrptr -> name , lptr -> start , lptr -> len ) ; lptr ++ ; lrptr = LVAR_NEXT ( lrptr ) ; } pfree ( GETVAR ( curqlevel ) ) ; if ( cur -> numvar > 1 || cur -> flag != 0 ) wasbad = true ; else if ( wasbad == false ) ( result -> firstgood ) ++ ; } else wasbad = true ; curqlevel = NEXTLEV ( curqlevel ) ; cur = LQL_NEXT ( cur ) ; } pfree ( tmpql ) ; PG_RETURN_POINTER ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } num ++ ; if ( num > MaxAllocSize / ITEMSIZE ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>levels<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , num , ( int ) ( MaxAllocSize / ITEMSIZE ) ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14468\n\n```\nCWE-125 u_int mfr_print ( netdissect_options * ndo , register const u_char * p , u_int length ) { u_int tlen , idx , hdr_len = 0 ; uint16_t sequence_num ; uint8_t ie_type , ie_len ; const uint8_t * tptr ; ND_TCHECK2 ( * p , 4 ) ; if ( ( p [ 0 ] & MFR_BEC_MASK ) == MFR_CTRL_FRAME && p [ 1 ] == 0 ) { ND_PRINT ( ( ndo , \"FRF.16<S2SV_blank>Control,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , bittok2str ( frf_flag_values , \"none\" , ( p [ 0 ] & MFR_BEC_MASK ) ) , tok2str ( mfr_ctrl_msg_values , \"Unknown<S2SV_blank>Message<S2SV_blank>(0x%02x)\" , p [ 2 ] ) , length ) ) ; tptr = p + 3 ; tlen = length - 3 ; hdr_len = 3 ; if ( ! ndo -> ndo_vflag ) return hdr_len ; while ( tlen > sizeof ( struct ie_tlv_header_t ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct ie_tlv_header_t ) ) ; ie_type = tptr [ 0 ] ; ie_len = tptr [ 1 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\tIE<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u:<S2SV_blank>\" , tok2str ( mfr_ctrl_ie_values , \"Unknown\" , ie_type ) , ie_type , ie_len ) ) ; if ( ie_type == 0 || ie_len <= sizeof ( struct ie_tlv_header_t ) ) return hdr_len ; ND_TCHECK2 ( * tptr , ie_len ) ; tptr += sizeof ( struct ie_tlv_header_t ) ; ie_len -= sizeof ( struct ie_tlv_header_t ) ; tlen -= sizeof ( struct ie_tlv_header_t ) ; switch ( ie_type ) { <S2SV_StartBug> case MFR_CTRL_IE_MAGIC_NUM : <S2SV_EndBug> ND_PRINT ( ( ndo , \"0x%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; break ; case MFR_CTRL_IE_BUNDLE_ID : case MFR_CTRL_IE_LINK_ID : for ( idx = 0 ; idx < ie_len && idx < MFR_ID_STRING_MAXLEN ; idx ++ ) { if ( * ( tptr + idx ) != 0 ) safeputchar ( ndo , * ( tptr + idx ) ) ; else break ; } break ; case MFR_CTRL_IE_TIMESTAMP : if ( ie_len == sizeof ( struct timeval ) ) { ts_print ( ndo , ( const struct timeval * ) tptr ) ; break ; } case MFR_CTRL_IE_VENDOR_EXT : case MFR_CTRL_IE_CAUSE : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ie_len ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ie_len ) ; tlen -= ie_len ; tptr += ie_len ; } return hdr_len ; } sequence_num = ( p [ 0 ] & 0x1e ) << 7 | p [ 1 ] ; if ( ( p [ 0 ] & MFR_BEC_MASK ) == MFR_FRAG_FRAME || ( p [ 0 ] & MFR_BEC_MASK ) == MFR_B_BIT ) { ND_PRINT ( ( ndo , \"FRF.16<S2SV_blank>Frag,<S2SV_blank>seq<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>\" , sequence_num , bittok2str ( frf_flag_values , \"none\" , ( p [ 0 ] & MFR_BEC_MASK ) ) ) ) ; hdr_len = 2 ; fr_print ( ndo , p + hdr_len , length - hdr_len ) ; return hdr_len ; } ND_PRINT ( ( ndo , \"FRF.16<S2SV_blank>Frag,<S2SV_blank>seq<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s]\" , sequence_num , bittok2str ( frf_flag_values , \"none\" , ( p [ 0 ] & MFR_BEC_MASK ) ) ) ) ; print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , length ) ; return hdr_len ; trunc : ND_PRINT ( ( ndo , \"[|mfr]\" ) ) ; return length ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case MFR_CTRL_IE_MAGIC_NUM : if ( ie_len != 4 ) { ND_PRINT ( ( ndo , \"(invalid<S2SV_blank>length)\" ) ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5354\n\n```\nCWE-476 static int dissect_usb_ms_bulk ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * parent_tree , void * data ) { usb_conv_info_t * usb_conv_info ; usb_ms_conv_info_t * usb_ms_conv_info ; proto_tree * tree ; proto_item * ti ; guint32 signature = 0 ; int offset = 0 ; gboolean is_request ; itl_nexus_t * itl ; itlq_nexus_t * itlq ; if ( data == NULL ) return 0 ; usb_conv_info = ( usb_conv_info_t * ) data ; usb_ms_conv_info = ( usb_ms_conv_info_t * ) usb_conv_info -> class_data ; if ( ! usb_ms_conv_info ) { usb_ms_conv_info = wmem_new ( wmem_file_scope ( ) , usb_ms_conv_info_t ) ; usb_ms_conv_info -> itl = wmem_tree_new ( wmem_file_scope ( ) ) ; usb_ms_conv_info -> itlq = wmem_tree_new ( wmem_file_scope ( ) ) ; usb_conv_info -> class_data = usb_ms_conv_info ; <S2SV_StartBug> } <S2SV_EndBug> is_request = ( pinfo -> srcport == NO_ENDPOINT ) ; col_set_str ( pinfo -> cinfo , COL_PROTOCOL , \"USBMS\" ) ; col_clear ( pinfo -> cinfo , COL_INFO ) ; ti = proto_tree_add_protocol_format ( parent_tree , proto_usb_ms , tvb , 0 , - 1 , \"USB<S2SV_blank>Mass<S2SV_blank>Storage\" ) ; tree = proto_item_add_subtree ( ti , ett_usb_ms ) ; signature = tvb_get_letohl ( tvb , offset ) ; if ( is_request && ( signature == 0x43425355 ) && ( tvb_reported_length ( tvb ) == 31 ) ) { tvbuff_t * cdb_tvb ; int cdbrlen , cdblen ; guint8 lun , flags ; guint32 datalen ; proto_tree_add_item ( tree , hf_usb_ms_dCBWSignature , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWTag , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWDataTransferLength , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; datalen = tvb_get_letohl ( tvb , offset ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWFlags , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; flags = tvb_get_guint8 ( tvb , offset ) ; offset += 1 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWTarget , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_ms_dCBWLUN , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; lun = tvb_get_guint8 ( tvb , offset ) & 0x0f ; offset += 1 ; itl = ( itl_nexus_t * ) wmem_tree_lookup32 ( usb_ms_conv_info -> itl , lun ) ; if ( ! itl ) { itl = wmem_new ( wmem_file_scope ( ) , itl_nexus_t ) ; itl -> cmdset = 0xff ; itl -> conversation = NULL ; wmem_tree_insert32 ( usb_ms_conv_info -> itl , lun , itl ) ; } itlq = ( itlq_nexus_t * ) wmem_tree_lookup32 ( usb_ms_conv_info -> itlq , pinfo -> num ) ; if ( ! itlq ) { itlq = wmem_new ( wmem_file_scope ( ) , itlq_nexus_t ) ; itlq -> lun = lun ; itlq -> scsi_opcode = 0xffff ; itlq -> task_flags = 0 ; if ( datalen ) { if ( flags & 0x80 ) { itlq -> task_flags |= SCSI_DATA_READ ; } else { itlq -> task_flags |= SCSI_DATA_WRITE ; } } itlq -> data_length = datalen ; itlq -> bidir_data_length = 0 ; itlq -> fc_time = pinfo -> abs_ts ; itlq -> first_exchange_frame = pinfo -> num ; itlq -> last_exchange_frame = 0 ; itlq -> flags = 0 ; itlq -> alloc_len = 0 ; itlq -> extra_data = NULL ; wmem_tree_insert32 ( usb_ms_conv_info -> itlq , pinfo -> num , itlq ) ; } proto_tree_add_item ( tree , hf_usb_ms_dCBWCBLength , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; cdbrlen = tvb_get_guint8 ( tvb , offset ) & 0x1f ; offset += 1 ; cdblen = cdbrlen ; if ( cdblen > tvb_captured_length_remaining ( tvb , offset ) ) { cdblen = tvb_captured_length_remaining ( tvb , offset ) ; } if ( cdblen ) { cdb_tvb = tvb_new_subset ( tvb , offset , cdblen , cdbrlen ) ; dissect_scsi_cdb ( cdb_tvb , pinfo , parent_tree , SCSI_DEV_UNKNOWN , itlq , itl ) ; } return tvb_captured_length ( tvb ) ; } if ( ( ! is_request ) && ( signature == 0x53425355 ) && ( tvb_reported_length ( tvb ) == 13 ) ) { guint8 status ; proto_tree_add_item ( tree , hf_usb_ms_dCSWSignature , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWTag , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCSWDataResidue , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCSWStatus , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; status = tvb_get_guint8 ( tvb , offset ) ; itlq = ( itlq_nexus_t * ) wmem_tree_lookup32_le ( usb_ms_conv_info -> itlq , pinfo -> num ) ; if ( ! itlq ) { return tvb_captured_length ( tvb ) ; } itlq -> last_exchange_frame = pinfo -> num ; itl = ( itl_nexus_t * ) wmem_tree_lookup32 ( usb_ms_conv_info -> itl , itlq -> lun ) ; if ( ! itl ) { return tvb_captured_length ( tvb ) ; } if ( ! status ) { dissect_scsi_rsp ( tvb , pinfo , parent_tree , itlq , itl , 0 ) ; } else { dissect_scsi_rsp ( tvb , pinfo , parent_tree , itlq , itl , 0x02 ) ; } return tvb_captured_length ( tvb ) ; } itlq = ( itlq_nexus_t * ) wmem_tree_lookup32_le ( usb_ms_conv_info -> itlq , pinfo -> num ) ; if ( ! itlq ) { return tvb_captured_length ( tvb ) ; } itl = ( itl_nexus_t * ) wmem_tree_lookup32 ( usb_ms_conv_info -> itl , itlq -> lun ) ; if ( ! itl ) { return tvb_captured_length ( tvb ) ; } dissect_scsi_payload ( tvb , pinfo , parent_tree , is_request , itlq , itl , 0 ) ; return tvb_captured_length ( tvb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = usb_ms_conv_info ; usb_conv_info -> class_data_type = USB_CONV_MASS_STORAGE ; } else if ( usb_conv_info -> class_data_type != USB_CONV_MASS_STORAGE ) { return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18079\n\n```\nCWE-476 static int i8042_start ( struct serio * serio ) { struct i8042_port * port = serio -> port_data ; <S2SV_StartBug> port -> exists = true ; <S2SV_EndBug> <S2SV_StartBug> mb ( ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> port_data ; spin_lock_irq ( & i8042_lock ) ; <S2SV_ModStart> = true ; spin_unlock_irq ( & i8042_lock <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5736\n\n```\nCWE-78 void nsexec ( void ) { int pipenum ; jmp_buf env ; int sync_child_pipe [ 2 ] , sync_grandchild_pipe [ 2 ] ; struct nlconfig_t config = { 0 } ; pipenum = initpipe ( ) ; if ( pipenum == - 1 ) return ; <S2SV_StartBug> nl_parse ( pipenum , & config ) ; <S2SV_EndBug> update_oom_score_adj ( config . oom_score_adj , config . oom_score_adj_len ) ; if ( config . namespaces ) { if ( prctl ( PR_SET_DUMPABLE , 0 , 0 , 0 , 0 ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>process<S2SV_blank>as<S2SV_blank>non-dumpable\" ) ; } if ( socketpair ( AF_LOCAL , SOCK_STREAM , 0 , sync_child_pipe ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>setup<S2SV_blank>sync<S2SV_blank>pipe<S2SV_blank>between<S2SV_blank>parent<S2SV_blank>and<S2SV_blank>child\" ) ; if ( socketpair ( AF_LOCAL , SOCK_STREAM , 0 , sync_grandchild_pipe ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>setup<S2SV_blank>sync<S2SV_blank>pipe<S2SV_blank>between<S2SV_blank>parent<S2SV_blank>and<S2SV_blank>grandchild\" ) ; switch ( setjmp ( env ) ) { case JUMP_PARENT : { int len ; pid_t child , first_child = - 1 ; bool ready = false ; prctl ( PR_SET_NAME , ( unsigned long ) \"runc:[0:PARENT]\" , 0 , 0 , 0 ) ; child = clone_parent ( & env , JUMP_CHILD ) ; if ( child < 0 ) bail ( \"unable<S2SV_blank>to<S2SV_blank>fork:<S2SV_blank>child_func\" ) ; while ( ! ready ) { enum sync_t s ; int ret ; syncfd = sync_child_pipe [ 1 ] ; close ( sync_child_pipe [ 0 ] ) ; if ( read ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>child:<S2SV_blank>next<S2SV_blank>state\" ) ; switch ( s ) { case SYNC_ERR : if ( read ( syncfd , & ret , sizeof ( ret ) ) != sizeof ( ret ) ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>child:<S2SV_blank>read(error<S2SV_blank>code)\" ) ; exit ( ret ) ; case SYNC_USERMAP_PLS : if ( config . is_rootless_euid && ! config . is_setgroup ) update_setgroups ( child , SETGROUPS_DENY ) ; update_uidmap ( config . uidmappath , child , config . uidmap , config . uidmap_len ) ; update_gidmap ( config . gidmappath , child , config . gidmap , config . gidmap_len ) ; s = SYNC_USERMAP_ACK ; if ( write ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) { kill ( child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>child:<S2SV_blank>write(SYNC_USERMAP_ACK)\" ) ; } break ; case SYNC_RECVPID_PLS : { first_child = child ; if ( read ( syncfd , & child , sizeof ( child ) ) != sizeof ( child ) ) { kill ( first_child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>child:<S2SV_blank>read(childpid)\" ) ; } s = SYNC_RECVPID_ACK ; if ( write ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) { kill ( first_child , SIGKILL ) ; kill ( child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>child:<S2SV_blank>write(SYNC_RECVPID_ACK)\" ) ; } len = dprintf ( pipenum , \"{\\\\\"pid\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"pid_first\\\\\":<S2SV_blank>%d}\\\\n\" , child , first_child ) ; if ( len < 0 ) { kill ( child , SIGKILL ) ; bail ( \"unable<S2SV_blank>to<S2SV_blank>generate<S2SV_blank>JSON<S2SV_blank>for<S2SV_blank>child<S2SV_blank>pid\" ) ; } } break ; case SYNC_CHILD_READY : ready = true ; break ; default : bail ( \"unexpected<S2SV_blank>sync<S2SV_blank>value:<S2SV_blank>%u\" , s ) ; } } ready = false ; while ( ! ready ) { enum sync_t s ; int ret ; syncfd = sync_grandchild_pipe [ 1 ] ; close ( sync_grandchild_pipe [ 0 ] ) ; s = SYNC_GRANDCHILD ; if ( write ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) { kill ( child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>child:<S2SV_blank>write(SYNC_GRANDCHILD)\" ) ; } if ( read ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>child:<S2SV_blank>next<S2SV_blank>state\" ) ; switch ( s ) { case SYNC_ERR : if ( read ( syncfd , & ret , sizeof ( ret ) ) != sizeof ( ret ) ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>child:<S2SV_blank>read(error<S2SV_blank>code)\" ) ; exit ( ret ) ; case SYNC_CHILD_READY : ready = true ; break ; default : bail ( \"unexpected<S2SV_blank>sync<S2SV_blank>value:<S2SV_blank>%u\" , s ) ; } } exit ( 0 ) ; } case JUMP_CHILD : { pid_t child ; enum sync_t s ; syncfd = sync_child_pipe [ 0 ] ; close ( sync_child_pipe [ 1 ] ) ; prctl ( PR_SET_NAME , ( unsigned long ) \"runc:[1:CHILD]\" , 0 , 0 , 0 ) ; if ( config . namespaces ) join_namespaces ( config . namespaces ) ; if ( config . cloneflags & CLONE_NEWUSER ) { if ( unshare ( CLONE_NEWUSER ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>unshare<S2SV_blank>user<S2SV_blank>namespace\" ) ; config . cloneflags &= ~ CLONE_NEWUSER ; if ( config . namespaces ) { if ( prctl ( PR_SET_DUMPABLE , 1 , 0 , 0 , 0 ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>process<S2SV_blank>as<S2SV_blank>dumpable\" ) ; } s = SYNC_USERMAP_PLS ; if ( write ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>write(SYNC_USERMAP_PLS)\" ) ; if ( read ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>read(SYNC_USERMAP_ACK)\" ) ; if ( s != SYNC_USERMAP_ACK ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>SYNC_USERMAP_ACK:<S2SV_blank>got<S2SV_blank>%u\" , s ) ; if ( config . namespaces ) { if ( prctl ( PR_SET_DUMPABLE , 0 , 0 , 0 , 0 ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>process<S2SV_blank>as<S2SV_blank>dumpable\" ) ; } if ( setresuid ( 0 , 0 , 0 ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>become<S2SV_blank>root<S2SV_blank>in<S2SV_blank>user<S2SV_blank>namespace\" ) ; } if ( unshare ( config . cloneflags & ~ CLONE_NEWCGROUP ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>unshare<S2SV_blank>namespaces\" ) ; child = clone_parent ( & env , JUMP_INIT ) ; if ( child < 0 ) bail ( \"unable<S2SV_blank>to<S2SV_blank>fork:<S2SV_blank>init_func\" ) ; s = SYNC_RECVPID_PLS ; if ( write ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) { kill ( child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>write(SYNC_RECVPID_PLS)\" ) ; } if ( write ( syncfd , & child , sizeof ( child ) ) != sizeof ( child ) ) { kill ( child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>write(childpid)\" ) ; } if ( read ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) { kill ( child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>read(SYNC_RECVPID_ACK)\" ) ; } if ( s != SYNC_RECVPID_ACK ) { kill ( child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>SYNC_RECVPID_ACK:<S2SV_blank>got<S2SV_blank>%u\" , s ) ; } s = SYNC_CHILD_READY ; if ( write ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) { kill ( child , SIGKILL ) ; bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>write(SYNC_CHILD_READY)\" ) ; } exit ( 0 ) ; } case JUMP_INIT : { enum sync_t s ; syncfd = sync_grandchild_pipe [ 0 ] ; close ( sync_grandchild_pipe [ 1 ] ) ; close ( sync_child_pipe [ 0 ] ) ; close ( sync_child_pipe [ 1 ] ) ; prctl ( PR_SET_NAME , ( unsigned long ) \"runc:[2:INIT]\" , 0 , 0 , 0 ) ; if ( read ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>read(SYNC_GRANDCHILD)\" ) ; if ( s != SYNC_GRANDCHILD ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>parent:<S2SV_blank>SYNC_GRANDCHILD:<S2SV_blank>got<S2SV_blank>%u\" , s ) ; if ( setsid ( ) < 0 ) bail ( \"setsid<S2SV_blank>failed\" ) ; if ( setuid ( 0 ) < 0 ) bail ( \"setuid<S2SV_blank>failed\" ) ; if ( setgid ( 0 ) < 0 ) bail ( \"setgid<S2SV_blank>failed\" ) ; if ( ! config . is_rootless_euid && config . is_setgroup ) { if ( setgroups ( 0 , NULL ) < 0 ) bail ( \"setgroups<S2SV_blank>failed\" ) ; } if ( config . cloneflags & CLONE_NEWCGROUP ) { uint8_t value ; if ( read ( pipenum , & value , sizeof ( value ) ) != sizeof ( value ) ) bail ( \"read<S2SV_blank>synchronisation<S2SV_blank>value<S2SV_blank>failed\" ) ; if ( value == CREATECGROUPNS ) { if ( unshare ( CLONE_NEWCGROUP ) < 0 ) bail ( \"failed<S2SV_blank>to<S2SV_blank>unshare<S2SV_blank>cgroup<S2SV_blank>namespace\" ) ; } else bail ( \"received<S2SV_blank>unknown<S2SV_blank>synchronisation<S2SV_blank>value\" ) ; } s = SYNC_CHILD_READY ; if ( write ( syncfd , & s , sizeof ( s ) ) != sizeof ( s ) ) bail ( \"failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>with<S2SV_blank>patent:<S2SV_blank>write(SYNC_CHILD_READY)\" ) ; close ( sync_grandchild_pipe [ 0 ] ) ; nl_free ( & config ) ; return ; } default : bail ( \"unexpected<S2SV_blank>jump<S2SV_blank>value\" ) ; } bail ( \"should<S2SV_blank>never<S2SV_blank>be<S2SV_blank>reached\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; if ( ensure_cloned_binary ( ) < 0 ) bail ( \"could<S2SV_blank>not<S2SV_blank>ensure<S2SV_blank>we<S2SV_blank>are<S2SV_blank>a<S2SV_blank>cloned<S2SV_blank>binary\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 asmlinkage void do_ade ( struct pt_regs * regs ) { unsigned int __user * pc ; mm_segment_t seg ; perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , <S2SV_StartBug> 1 , 0 , regs , regs -> cp0_badvaddr ) ; <S2SV_EndBug> if ( ( regs -> cp0_badvaddr == regs -> cp0_epc ) || ( regs -> cp0_epc & 0x1 ) ) goto sigbus ; pc = ( unsigned int __user * ) exception_epc ( regs ) ; if ( user_mode ( regs ) && ! test_thread_flag ( TIF_FIXADE ) ) goto sigbus ; if ( unaligned_action == UNALIGNED_ACTION_SIGNAL ) goto sigbus ; else if ( unaligned_action == UNALIGNED_ACTION_SHOW ) show_registers ( regs ) ; seg = get_fs ( ) ; if ( ! user_mode ( regs ) ) set_fs ( KERNEL_DS ) ; emulate_load_store_insn ( regs , ( void __user * ) regs -> cp0_badvaddr , pc ) ; set_fs ( seg ) ; return ; sigbus : die_if_kernel ( \"Kernel<S2SV_blank>unaligned<S2SV_blank>instruction<S2SV_blank>access\" , regs ) ; force_sig ( SIGBUS , current ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2479\n\n```\nCWE-399 int hugepage_madvise ( struct vm_area_struct * vma , unsigned long * vm_flags , int advice ) { switch ( advice ) { case MADV_HUGEPAGE : if ( * vm_flags & ( VM_HUGEPAGE | <S2SV_StartBug> VM_SHARED | VM_MAYSHARE | <S2SV_EndBug> VM_PFNMAP | VM_IO | VM_DONTEXPAND | VM_RESERVED | VM_HUGETLB | VM_INSERTPAGE | VM_MIXEDMAP | VM_SAO ) ) return - EINVAL ; * vm_flags &= ~ VM_NOHUGEPAGE ; * vm_flags |= VM_HUGEPAGE ; if ( unlikely ( khugepaged_enter_vma_merge ( vma ) ) ) return - ENOMEM ; break ; case MADV_NOHUGEPAGE : if ( * vm_flags & ( VM_NOHUGEPAGE | <S2SV_StartBug> VM_SHARED | VM_MAYSHARE | <S2SV_EndBug> VM_PFNMAP | VM_IO | VM_DONTEXPAND | VM_RESERVED | VM_HUGETLB | VM_INSERTPAGE | VM_MIXEDMAP | VM_SAO ) ) return - EINVAL ; * vm_flags &= ~ VM_HUGEPAGE ; * vm_flags |= VM_NOHUGEPAGE ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( VM_HUGEPAGE | VM_NO_THP <S2SV_ModEnd> ) ) return <S2SV_ModStart> ( VM_NOHUGEPAGE | VM_NO_THP <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9496\n\n```\nCWE-000 static int sd2_parse_rsrc_fork ( SF_PRIVATE * psf ) { SD2_RSRC rsrc ; int k , marker , error = 0 ; psf_use_rsrc ( psf , SF_TRUE ) ; memset ( & rsrc , 0 , sizeof ( rsrc ) ) ; rsrc . rsrc_len = psf_get_filelen ( psf ) ; psf_log_printf ( psf , \"Resource<S2SV_blank>length<S2SV_blank>:<S2SV_blank>%d<S2SV_blank>(0x%04X)\\\\n\" , rsrc . rsrc_len , rsrc . rsrc_len ) ; if ( rsrc . rsrc_len > SIGNED_SIZEOF ( psf -> header ) ) { rsrc . rsrc_data = calloc ( 1 , rsrc . rsrc_len ) ; rsrc . need_to_free_rsrc_data = SF_TRUE ; } else { rsrc . rsrc_data = psf -> header ; rsrc . need_to_free_rsrc_data = SF_FALSE ; } ; psf_fread ( rsrc . rsrc_data , rsrc . rsrc_len , 1 , psf ) ; psf -> headindex = psf -> headend = rsrc . rsrc_len ; rsrc . data_offset = read_rsrc_int ( & rsrc , 0 ) ; rsrc . map_offset = read_rsrc_int ( & rsrc , 4 ) ; rsrc . data_length = read_rsrc_int ( & rsrc , 8 ) ; rsrc . map_length = read_rsrc_int ( & rsrc , 12 ) ; if ( rsrc . data_offset == 0x51607 && rsrc . map_offset == 0x20000 ) { psf_log_printf ( psf , \"Trying<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>0x52<S2SV_blank>bytes.\\\\n\" ) ; rsrc . data_offset = read_rsrc_int ( & rsrc , 0x52 + 0 ) + 0x52 ; rsrc . map_offset = read_rsrc_int ( & rsrc , 0x52 + 4 ) + 0x52 ; rsrc . data_length = read_rsrc_int ( & rsrc , 0x52 + 8 ) ; rsrc . map_length = read_rsrc_int ( & rsrc , 0x52 + 12 ) ; } ; psf_log_printf ( psf , \"<S2SV_blank><S2SV_blank>data<S2SV_blank>offset<S2SV_blank>:<S2SV_blank>0x%04X\\\\n<S2SV_blank><S2SV_blank>map<S2SV_blank><S2SV_blank>offset<S2SV_blank>:<S2SV_blank>0x%04X\\\\n\" \"<S2SV_blank><S2SV_blank>data<S2SV_blank>length<S2SV_blank>:<S2SV_blank>0x%04X\\\\n<S2SV_blank><S2SV_blank>map<S2SV_blank><S2SV_blank>length<S2SV_blank>:<S2SV_blank>0x%04X\\\\n\" , rsrc . data_offset , rsrc . map_offset , rsrc . data_length , rsrc . map_length ) ; if ( rsrc . data_offset > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>rsrc.data_offset<S2SV_blank>(%d,<S2SV_blank>0x%x)<S2SV_blank>><S2SV_blank>len\\\\n\" , rsrc . data_offset , rsrc . data_offset ) ; error = SFE_SD2_BAD_DATA_OFFSET ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . map_offset > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>rsrc.map_offset<S2SV_blank>><S2SV_blank>len\\\\n\" ) ; error = SFE_SD2_BAD_MAP_OFFSET ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . data_length > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>rsrc.data_length<S2SV_blank>><S2SV_blank>len\\\\n\" ) ; error = SFE_SD2_BAD_DATA_LENGTH ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . map_length > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>rsrc.map_length<S2SV_blank>><S2SV_blank>len\\\\n\" ) ; error = SFE_SD2_BAD_MAP_LENGTH ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . data_offset + rsrc . data_length != rsrc . map_offset || rsrc . map_offset + rsrc . map_length != rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>This<S2SV_blank>does<S2SV_blank>not<S2SV_blank>look<S2SV_blank>like<S2SV_blank>a<S2SV_blank>MacOSX<S2SV_blank>resource<S2SV_blank>fork.\\\\n\" ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . map_offset + 28 >= rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>map<S2SV_blank>offset<S2SV_blank>(%d<S2SV_blank>+<S2SV_blank>28<S2SV_blank>><S2SV_blank>%d).\\\\n\" , rsrc . map_offset , rsrc . rsrc_len ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; rsrc . string_offset = rsrc . map_offset + read_rsrc_short ( & rsrc , rsrc . map_offset + 26 ) ; if ( rsrc . string_offset > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>string<S2SV_blank>offset<S2SV_blank>(%d).\\\\n\" , rsrc . string_offset ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; rsrc . type_offset = rsrc . map_offset + 30 ; <S2SV_StartBug> rsrc . type_count = read_rsrc_short ( & rsrc , rsrc . map_offset + 28 ) + 1 ; <S2SV_EndBug> if ( rsrc . type_count < 1 ) { psf_log_printf ( psf , \"Bad<S2SV_blank>type<S2SV_blank>count.\\\\n\" ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; rsrc . item_offset = rsrc . type_offset + rsrc . type_count * 8 ; if ( rsrc . item_offset < 0 || rsrc . item_offset > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>item<S2SV_blank>offset<S2SV_blank>(%d).\\\\n\" , rsrc . item_offset ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; rsrc . str_index = - 1 ; for ( k = 0 ; k < rsrc . type_count ; k ++ ) <S2SV_StartBug> { marker = read_rsrc_marker ( & rsrc , rsrc . type_offset + k * 8 ) ; <S2SV_EndBug> if ( marker == STR_MARKER ) { rsrc . str_index = k ; rsrc . str_count = read_rsrc_short ( & rsrc , rsrc . type_offset + k * 8 + 4 ) + 1 ; error = parse_str_rsrc ( psf , & rsrc ) ; goto parse_rsrc_fork_cleanup ; } ; } ; psf_log_printf ( psf , \"No<S2SV_blank>\\'STR<S2SV_blank>\\'<S2SV_blank>resource.\\\\n\" ) ; error = SFE_SD2_BAD_RSRC ; parse_rsrc_fork_cleanup : psf_use_rsrc ( psf , SF_FALSE ) ; if ( rsrc . need_to_free_rsrc_data ) free ( rsrc . rsrc_data ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 30 ; if ( rsrc . map_offset + 28 > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>map<S2SV_blank>offset.\\\\n\" ) ; goto parse_rsrc_fork_cleanup ; } ; <S2SV_ModStart> ++ ) { if ( <S2SV_ModEnd> rsrc . type_offset <S2SV_ModStart> k * 8 > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>rsrc<S2SV_blank>marker.\\\\n\" ) ; goto parse_rsrc_fork_cleanup ; } ; marker = read_rsrc_marker ( & rsrc , rsrc . type_offset + k * 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4979\n\n```\nCWE-284 int ssl_hook_Access ( request_rec * r ) { SSLDirConfigRec * dc = myDirConfig ( r ) ; SSLSrvConfigRec * sc = mySrvConfig ( r -> server ) ; SSLConnRec * sslconn = myConnConfig ( r -> connection ) ; SSL * ssl = sslconn ? sslconn -> ssl : NULL ; server_rec * handshakeserver = sslconn ? sslconn -> server : NULL ; SSLSrvConfigRec * hssc = handshakeserver ? mySrvConfig ( handshakeserver ) : NULL ; SSL_CTX * ctx = NULL ; apr_array_header_t * requires ; ssl_require_t * ssl_requires ; int ok , i ; BOOL renegotiate = FALSE , renegotiate_quick = FALSE ; X509 * cert ; X509 * peercert ; X509_STORE * cert_store = NULL ; X509_STORE_CTX * cert_store_ctx ; STACK_OF ( SSL_CIPHER ) * cipher_list_old = NULL , * cipher_list = NULL ; const SSL_CIPHER * cipher = NULL ; int depth , verify_old , verify , n , is_slave = 0 ; const char * ncipher_suite ; if ( ! ( sslconn && ssl ) && r -> connection -> master ) { sslconn = myConnConfig ( r -> connection -> master ) ; ssl = sslconn ? sslconn -> ssl : NULL ; handshakeserver = sslconn ? sslconn -> server : NULL ; hssc = handshakeserver ? mySrvConfig ( handshakeserver ) : NULL ; is_slave = 1 ; } if ( ssl ) { if ( ! SSL_is_init_finished ( ssl ) ) { return HTTP_FORBIDDEN ; } ctx = SSL_get_SSL_CTX ( ssl ) ; } if ( dc -> bSSLRequired && ! ssl ) { if ( ( sc -> enabled == SSL_ENABLED_OPTIONAL ) && ! is_slave ) { apr_table_setn ( r -> err_headers_out , \"Upgrade\" , \"TLS/1.0,<S2SV_blank>HTTP/1.1\" ) ; apr_table_setn ( r -> err_headers_out , \"Connection\" , \"Upgrade\" ) ; return HTTP_UPGRADE_REQUIRED ; } ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02219 ) \"access<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>failed,<S2SV_blank>reason:<S2SV_blank>%s\" , r -> filename , \"SSL<S2SV_blank>connection<S2SV_blank>required\" ) ; apr_table_setn ( r -> notes , \"ssl-access-forbidden\" , \"1\" ) ; return HTTP_FORBIDDEN ; } if ( sc -> enabled == SSL_ENABLED_FALSE || ! ssl ) { return DECLINED ; } # ifdef HAVE_SRP if ( SSL_get_srp_username ( ssl ) ) { return DECLINED ; } # endif ncipher_suite = ( dc -> szCipherSuite ? dc -> szCipherSuite : ( r -> server != handshakeserver ) ? sc -> server -> auth . cipher_suite : NULL ) ; if ( ncipher_suite && ( ! sslconn -> cipher_suite || strcmp ( ncipher_suite , sslconn -> cipher_suite ) ) ) { if ( dc -> nOptions & SSL_OPT_OPTRENEGOTIATE ) { cipher = SSL_get_current_cipher ( ssl ) ; } else { cipher_list_old = ( STACK_OF ( SSL_CIPHER ) * ) SSL_get_ciphers ( ssl ) ; if ( cipher_list_old ) { cipher_list_old = sk_SSL_CIPHER_dup ( cipher_list_old ) ; } } if ( is_slave ) { apr_table_setn ( r -> notes , \"ssl-renegotiate-forbidden\" , \"cipher-suite\" ) ; return HTTP_FORBIDDEN ; } if ( ! SSL_set_cipher_list ( ssl , ncipher_suite ) ) { ap_log_rerror ( APLOG_MARK , APLOG_WARNING , 0 , r , APLOGNO ( 02253 ) \"Unable<S2SV_blank>to<S2SV_blank>reconfigure<S2SV_blank>(per-directory)<S2SV_blank>\" \"permitted<S2SV_blank>SSL<S2SV_blank>ciphers\" ) ; ssl_log_ssl_error ( SSLLOG_MARK , APLOG_ERR , r -> server ) ; if ( cipher_list_old ) { sk_SSL_CIPHER_free ( cipher_list_old ) ; } return HTTP_FORBIDDEN ; } cipher_list = ( STACK_OF ( SSL_CIPHER ) * ) SSL_get_ciphers ( ssl ) ; if ( dc -> nOptions & SSL_OPT_OPTRENEGOTIATE ) { if ( ( ! cipher && cipher_list ) || ( cipher && ! cipher_list ) ) { renegotiate = TRUE ; } else if ( cipher && cipher_list && ( sk_SSL_CIPHER_find ( cipher_list , cipher ) < 0 ) ) { renegotiate = TRUE ; } } else { if ( ( ! cipher_list_old && cipher_list ) || ( cipher_list_old && ! cipher_list ) ) { renegotiate = TRUE ; } else if ( cipher_list_old && cipher_list ) { for ( n = 0 ; ! renegotiate && ( n < sk_SSL_CIPHER_num ( cipher_list ) ) ; n ++ ) { const SSL_CIPHER * value = sk_SSL_CIPHER_value ( cipher_list , n ) ; if ( sk_SSL_CIPHER_find ( cipher_list_old , value ) < 0 ) { renegotiate = TRUE ; } } for ( n = 0 ; ! renegotiate && ( n < sk_SSL_CIPHER_num ( cipher_list_old ) ) ; n ++ ) { const SSL_CIPHER * value = sk_SSL_CIPHER_value ( cipher_list_old , n ) ; if ( sk_SSL_CIPHER_find ( cipher_list , value ) < 0 ) { renegotiate = TRUE ; } } } } if ( cipher_list_old ) { sk_SSL_CIPHER_free ( cipher_list_old ) ; } if ( renegotiate ) { if ( is_slave ) { apr_table_setn ( r -> notes , \"ssl-renegotiate-forbidden\" , \"cipher-suite\" ) ; return HTTP_FORBIDDEN ; } # ifdef SSL_OP_CIPHER_SERVER_PREFERENCE if ( sc -> cipher_server_pref == TRUE ) { SSL_set_options ( ssl , SSL_OP_CIPHER_SERVER_PREFERENCE ) ; } # endif ap_log_rerror ( APLOG_MARK , APLOG_DEBUG , 0 , r , APLOGNO ( 02220 ) \"Reconfigured<S2SV_blank>cipher<S2SV_blank>suite<S2SV_blank>will<S2SV_blank>force<S2SV_blank>renegotiation\" ) ; } } if ( ( dc -> nVerifyClient != SSL_CVERIFY_UNSET ) || ( sc -> server -> auth . verify_mode != SSL_CVERIFY_UNSET ) ) { verify_old = SSL_get_verify_mode ( ssl ) ; verify = SSL_VERIFY_NONE ; if ( ( dc -> nVerifyClient == SSL_CVERIFY_REQUIRE ) || ( sc -> server -> auth . verify_mode == SSL_CVERIFY_REQUIRE ) ) { verify |= SSL_VERIFY_PEER_STRICT ; } if ( ( dc -> nVerifyClient == SSL_CVERIFY_OPTIONAL ) || ( dc -> nVerifyClient == SSL_CVERIFY_OPTIONAL_NO_CA ) || ( sc -> server -> auth . verify_mode == SSL_CVERIFY_OPTIONAL ) || ( sc -> server -> auth . verify_mode == SSL_CVERIFY_OPTIONAL_NO_CA ) ) { verify |= SSL_VERIFY_PEER ; } SSL_set_verify ( ssl , verify , ssl_callback_SSLVerify ) ; SSL_set_verify_result ( ssl , X509_V_OK ) ; if ( ! renegotiate && verify != verify_old ) { if ( ( ( verify_old == SSL_VERIFY_NONE ) && ( verify != SSL_VERIFY_NONE ) ) || ( ! ( verify_old & SSL_VERIFY_PEER ) && ( verify & SSL_VERIFY_PEER ) ) || ( ! ( verify_old & SSL_VERIFY_FAIL_IF_NO_PEER_CERT ) && ( verify & SSL_VERIFY_FAIL_IF_NO_PEER_CERT ) ) ) { renegotiate = TRUE ; if ( is_slave ) { apr_table_setn ( r -> notes , \"ssl-renegotiate-forbidden\" , \"verify-client\" ) ; <S2SV_StartBug> return HTTP_FORBIDDEN ; <S2SV_EndBug> } if ( ( dc -> nOptions & SSL_OPT_OPTRENEGOTIATE ) && ( verify_old == SSL_VERIFY_NONE ) && ( ( peercert = SSL_get_peer_certificate ( ssl ) ) != NULL ) ) { renegotiate_quick = TRUE ; X509_free ( peercert ) ; } ap_log_rerror ( APLOG_MARK , APLOG_DEBUG , 0 , r , APLOGNO ( 02255 ) \"Changed<S2SV_blank>client<S2SV_blank>verification<S2SV_blank>type<S2SV_blank>will<S2SV_blank>force<S2SV_blank>\" \"%srenegotiation\" , renegotiate_quick ? \"quick<S2SV_blank>\" : \"\" ) ; } else if ( verify != SSL_VERIFY_NONE ) { n = ( sslconn -> verify_depth != UNSET ) ? sslconn -> verify_depth : hssc -> server -> auth . verify_depth ; sslconn -> verify_depth = ( dc -> nVerifyDepth != UNSET ) ? dc -> nVerifyDepth : sc -> server -> auth . verify_depth ; if ( sslconn -> verify_depth < n ) { renegotiate = TRUE ; ap_log_rerror ( APLOG_MARK , APLOG_DEBUG , 0 , r , APLOGNO ( 02254 ) \"Reduced<S2SV_blank>client<S2SV_blank>verification<S2SV_blank>depth<S2SV_blank>will<S2SV_blank>\" \"force<S2SV_blank>renegotiation\" ) ; } } } if ( ( r -> server != handshakeserver ) && renegotiate && ( ( verify & SSL_VERIFY_PEER ) || ( verify & SSL_VERIFY_FAIL_IF_NO_PEER_CERT ) ) ) { # define MODSSL_CFG_CA_NE ( f , sc1 , sc2 ) ( sc1 -> server -> auth . f && ( ! sc2 -> server -> auth . f || strNE ( sc1 -> server -> auth . f , sc2 -> server -> auth . f ) ) ) if ( MODSSL_CFG_CA_NE ( ca_cert_file , sc , hssc ) || MODSSL_CFG_CA_NE ( ca_cert_path , sc , hssc ) ) { if ( verify & SSL_VERIFY_FAIL_IF_NO_PEER_CERT ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , r , APLOGNO ( 02256 ) \"Non-default<S2SV_blank>virtual<S2SV_blank>host<S2SV_blank>with<S2SV_blank>SSLVerify<S2SV_blank>set<S2SV_blank>to<S2SV_blank>\" \"\\'require\\'<S2SV_blank>and<S2SV_blank>VirtualHost-specific<S2SV_blank>CA<S2SV_blank>certificate<S2SV_blank>\" \"list<S2SV_blank>is<S2SV_blank>only<S2SV_blank>available<S2SV_blank>to<S2SV_blank>clients<S2SV_blank>with<S2SV_blank>TLS<S2SV_blank>server<S2SV_blank>\" \"name<S2SV_blank>indication<S2SV_blank>(SNI)<S2SV_blank>support\" ) ; SSL_set_verify ( ssl , verify_old , NULL ) ; return HTTP_FORBIDDEN ; } else sslconn -> verify_info = \"GENEROUS\" ; } } } if ( renegotiate && ! renegotiate_quick && ( apr_table_get ( r -> headers_in , \"transfer-encoding\" ) || ( apr_table_get ( r -> headers_in , \"content-length\" ) && strcmp ( apr_table_get ( r -> headers_in , \"content-length\" ) , \"0\" ) ) ) && ! r -> expecting_100 ) { int rv ; apr_size_t rsize ; rsize = dc -> nRenegBufferSize == UNSET ? DEFAULT_RENEG_BUFFER_SIZE : dc -> nRenegBufferSize ; if ( rsize > 0 ) { rv = ssl_io_buffer_fill ( r , rsize ) ; } else { rv = HTTP_REQUEST_ENTITY_TOO_LARGE ; } if ( rv ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02257 ) \"could<S2SV_blank>not<S2SV_blank>buffer<S2SV_blank>message<S2SV_blank>body<S2SV_blank>to<S2SV_blank>allow<S2SV_blank>\" \"SSL<S2SV_blank>renegotiation<S2SV_blank>to<S2SV_blank>proceed\" ) ; return rv ; } } if ( renegotiate ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , r , APLOGNO ( 02221 ) \"Requesting<S2SV_blank>connection<S2SV_blank>re-negotiation\" ) ; if ( renegotiate_quick ) { STACK_OF ( X509 ) * cert_stack ; ap_log_rerror ( APLOG_MARK , APLOG_DEBUG , 0 , r , APLOGNO ( 02258 ) \"Performing<S2SV_blank>quick<S2SV_blank>renegotiation:<S2SV_blank>\" \"just<S2SV_blank>re-verifying<S2SV_blank>the<S2SV_blank>peer\" ) ; cert_stack = ( STACK_OF ( X509 ) * ) SSL_get_peer_cert_chain ( ssl ) ; cert = SSL_get_peer_certificate ( ssl ) ; if ( ! cert_stack && cert ) { cert_stack = sk_X509_new_null ( ) ; sk_X509_push ( cert_stack , cert ) ; } if ( ! cert_stack || ( sk_X509_num ( cert_stack ) == 0 ) ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02222 ) \"Cannot<S2SV_blank>find<S2SV_blank>peer<S2SV_blank>certificate<S2SV_blank>chain\" ) ; return HTTP_FORBIDDEN ; } if ( ! ( cert_store || ( cert_store = SSL_CTX_get_cert_store ( ctx ) ) ) ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02223 ) \"Cannot<S2SV_blank>find<S2SV_blank>certificate<S2SV_blank>storage\" ) ; return HTTP_FORBIDDEN ; } if ( ! cert ) { cert = sk_X509_value ( cert_stack , 0 ) ; } cert_store_ctx = X509_STORE_CTX_new ( ) ; X509_STORE_CTX_init ( cert_store_ctx , cert_store , cert , cert_stack ) ; depth = SSL_get_verify_depth ( ssl ) ; if ( depth >= 0 ) { X509_STORE_CTX_set_depth ( cert_store_ctx , depth ) ; } X509_STORE_CTX_set_ex_data ( cert_store_ctx , SSL_get_ex_data_X509_STORE_CTX_idx ( ) , ( char * ) ssl ) ; if ( ! X509_verify_cert ( cert_store_ctx ) ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02224 ) \"Re-negotiation<S2SV_blank>verification<S2SV_blank>step<S2SV_blank>failed\" ) ; ssl_log_ssl_error ( SSLLOG_MARK , APLOG_ERR , r -> server ) ; } SSL_set_verify_result ( ssl , X509_STORE_CTX_get_error ( cert_store_ctx ) ) ; X509_STORE_CTX_cleanup ( cert_store_ctx ) ; X509_STORE_CTX_free ( cert_store_ctx ) ; if ( cert_stack != SSL_get_peer_cert_chain ( ssl ) ) { sk_X509_pop_free ( cert_stack , X509_free ) ; } } else { char peekbuf [ 1 ] ; const char * reneg_support ; request_rec * id = r -> main ? r -> main : r ; if ( has_buffered_data ( r ) ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02259 ) \"insecure<S2SV_blank>SSL<S2SV_blank>re-negotiation<S2SV_blank>required,<S2SV_blank>but<S2SV_blank>\" \"a<S2SV_blank>pipelined<S2SV_blank>request<S2SV_blank>is<S2SV_blank>present;<S2SV_blank>keepalive<S2SV_blank>\" \"disabled\" ) ; r -> connection -> keepalive = AP_CONN_CLOSE ; } # if defined ( SSL_get_secure_renegotiation_support ) reneg_support = SSL_get_secure_renegotiation_support ( ssl ) ? \"client<S2SV_blank>does\" : \"client<S2SV_blank>does<S2SV_blank>not\" ; # else reneg_support = \"server<S2SV_blank>does<S2SV_blank>not\" ; # endif ap_log_rerror ( APLOG_MARK , APLOG_DEBUG , 0 , r , APLOGNO ( 02260 ) \"Performing<S2SV_blank>full<S2SV_blank>renegotiation:<S2SV_blank>complete<S2SV_blank>handshake<S2SV_blank>\" \"protocol<S2SV_blank>(%s<S2SV_blank>support<S2SV_blank>secure<S2SV_blank>renegotiation)\" , reneg_support ) ; SSL_set_session_id_context ( ssl , ( unsigned char * ) & id , sizeof ( id ) ) ; sslconn -> reneg_state = RENEG_ALLOW ; SSL_renegotiate ( ssl ) ; SSL_do_handshake ( ssl ) ; if ( ! SSL_is_init_finished ( ssl ) ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02225 ) \"Re-negotiation<S2SV_blank>request<S2SV_blank>failed\" ) ; ssl_log_ssl_error ( SSLLOG_MARK , APLOG_ERR , r -> server ) ; r -> connection -> keepalive = AP_CONN_CLOSE ; return HTTP_FORBIDDEN ; } ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , r , APLOGNO ( 02226 ) \"Awaiting<S2SV_blank>re-negotiation<S2SV_blank>handshake\" ) ; SSL_peek ( ssl , peekbuf , 0 ) ; sslconn -> reneg_state = RENEG_REJECT ; if ( ! SSL_is_init_finished ( ssl ) ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02261 ) \"Re-negotiation<S2SV_blank>handshake<S2SV_blank>failed\" ) ; ssl_log_ssl_error ( SSLLOG_MARK , APLOG_ERR , r -> server ) ; r -> connection -> keepalive = AP_CONN_CLOSE ; return HTTP_FORBIDDEN ; } sslconn -> server = r -> server ; } if ( ( cert = SSL_get_peer_certificate ( ssl ) ) ) { if ( sslconn -> client_cert ) { X509_free ( sslconn -> client_cert ) ; } sslconn -> client_cert = cert ; sslconn -> client_dn = NULL ; } if ( ( dc -> nVerifyClient != SSL_CVERIFY_NONE ) || ( sc -> server -> auth . verify_mode != SSL_CVERIFY_NONE ) ) { BOOL do_verify = ( ( dc -> nVerifyClient == SSL_CVERIFY_REQUIRE ) || ( sc -> server -> auth . verify_mode == SSL_CVERIFY_REQUIRE ) ) ; if ( do_verify && ( SSL_get_verify_result ( ssl ) != X509_V_OK ) ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02262 ) \"Re-negotiation<S2SV_blank>handshake<S2SV_blank>failed:<S2SV_blank>\" \"Client<S2SV_blank>verification<S2SV_blank>failed\" ) ; return HTTP_FORBIDDEN ; } if ( do_verify ) { if ( ( peercert = SSL_get_peer_certificate ( ssl ) ) == NULL ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02263 ) \"Re-negotiation<S2SV_blank>handshake<S2SV_blank>failed:<S2SV_blank>\" \"Client<S2SV_blank>certificate<S2SV_blank>missing\" ) ; return HTTP_FORBIDDEN ; } X509_free ( peercert ) ; } } if ( cipher_list ) { cipher = SSL_get_current_cipher ( ssl ) ; if ( sk_SSL_CIPHER_find ( cipher_list , cipher ) < 0 ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02264 ) \"SSL<S2SV_blank>cipher<S2SV_blank>suite<S2SV_blank>not<S2SV_blank>renegotiated:<S2SV_blank>\" \"access<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>denied<S2SV_blank>using<S2SV_blank>cipher<S2SV_blank>%s\" , r -> filename , SSL_CIPHER_get_name ( cipher ) ) ; return HTTP_FORBIDDEN ; } } if ( ncipher_suite ) { sslconn -> cipher_suite = ncipher_suite ; } } if ( ( dc -> nOptions & SSL_OPT_FAKEBASICAUTH ) == 0 && dc -> szUserName ) { char * val = ssl_var_lookup ( r -> pool , r -> server , r -> connection , r , ( char * ) dc -> szUserName ) ; if ( val && val [ 0 ] ) r -> user = val ; else ap_log_rerror ( APLOG_MARK , APLOG_WARNING , 0 , r , APLOGNO ( 02227 ) \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>r->user<S2SV_blank>to<S2SV_blank>\\'%s\\'\" , dc -> szUserName ) ; } requires = dc -> aRequirement ; ssl_requires = ( ssl_require_t * ) requires -> elts ; for ( i = 0 ; i < requires -> nelts ; i ++ ) { ssl_require_t * req = & ssl_requires [ i ] ; const char * errstring ; ok = ap_expr_exec ( r , req -> mpExpr , & errstring ) ; if ( ok < 0 ) { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02265 ) \"access<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>failed,<S2SV_blank>reason:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>execute<S2SV_blank>\" \"SSL<S2SV_blank>requirement<S2SV_blank>expression:<S2SV_blank>%s\" , r -> filename , errstring ) ; apr_table_setn ( r -> notes , \"ssl-access-forbidden\" , \"1\" ) ; return HTTP_FORBIDDEN ; } if ( ok != 1 ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , r , APLOGNO ( 02266 ) \"Access<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>denied<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>\" \"(requirement<S2SV_blank>expression<S2SV_blank>not<S2SV_blank>fulfilled)\" , r -> filename , r -> useragent_ip ) ; ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , r , APLOGNO ( 02228 ) \"Failed<S2SV_blank>expression:<S2SV_blank>%s\" , req -> cpExpr ) ; ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , r , APLOGNO ( 02229 ) \"access<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>failed,<S2SV_blank>reason:<S2SV_blank>%s\" , r -> filename , \"SSL<S2SV_blank>requirement<S2SV_blank>expression<S2SV_blank>not<S2SV_blank>fulfilled\" ) ; apr_table_setn ( r -> notes , \"ssl-access-forbidden\" , \"1\" ) ; return HTTP_FORBIDDEN ; } } return DECLINED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"verify-client\" ) ; SSL_set_verify ( ssl , verify_old , ssl_callback_SSLVerify ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , char * * argv ) { FILE * infile = NULL ; <S2SV_StartBug> vpx_codec_ctx_t codec = { 0 } ; <S2SV_EndBug> <S2SV_StartBug> vpx_codec_enc_cfg_t cfg = { 0 } ; <S2SV_EndBug> int frame_count = 0 ; <S2SV_StartBug> vpx_image_t raw = { 0 } ; <S2SV_EndBug> vpx_codec_err_t res ; <S2SV_StartBug> VpxVideoInfo info = { 0 } ; <S2SV_EndBug> VpxVideoWriter * writer = NULL ; const VpxInterface * encoder = NULL ; const int fps = 2 ; const double bits_per_pixel_per_frame = 0.067 ; exec_name = argv [ 0 ] ; if ( argc != 6 ) die ( \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments\" ) ; <S2SV_StartBug> encoder = get_vpx_encoder_by_name ( argv [ 1 ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! encoder ) <S2SV_EndBug> <S2SV_StartBug> die ( \"Unsupported<S2SV_blank>codec.\" ) ; <S2SV_EndBug> info . codec_fourcc = encoder -> fourcc ; info . frame_width = strtol ( argv [ 2 ] , NULL , 0 ) ; info . frame_height = strtol ( argv [ 3 ] , NULL , 0 ) ; info . time_base . numerator = 1 ; info . time_base . denominator = fps ; if ( info . frame_width <= 0 || info . frame_height <= 0 || ( info . frame_width % 2 ) != 0 || ( info . frame_height % 2 ) != 0 ) { die ( \"Invalid<S2SV_blank>frame<S2SV_blank>size:<S2SV_blank>%dx%d\" , info . frame_width , info . frame_height ) ; } if ( ! vpx_img_alloc ( & raw , VPX_IMG_FMT_I420 , info . frame_width , info . frame_height , 1 ) ) { die ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>image.\" ) ; } <S2SV_StartBug> printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( encoder -> interface ( ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> res = vpx_codec_enc_config_default ( encoder -> interface ( ) , & cfg , 0 ) ; <S2SV_EndBug> if ( res ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>default<S2SV_blank>codec<S2SV_blank>config.\" ) ; cfg . g_w = info . frame_width ; cfg . g_h = info . frame_height ; cfg . g_timebase . num = info . time_base . numerator ; cfg . g_timebase . den = info . time_base . denominator ; cfg . rc_target_bitrate = ( unsigned int ) ( bits_per_pixel_per_frame * cfg . g_w * cfg . g_h * fps / 1000 ) ; cfg . g_lag_in_frames = 0 ; writer = vpx_video_writer_open ( argv [ 5 ] , kContainerIVF , & info ) ; if ( ! writer ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing.\" , argv [ 5 ] ) ; if ( ! ( infile = fopen ( argv [ 4 ] , \"rb\" ) ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading.\" , argv [ 4 ] ) ; <S2SV_StartBug> if ( vpx_codec_enc_init ( & codec , encoder -> interface ( ) , & cfg , 0 ) ) <S2SV_EndBug> die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>encoder\" ) ; while ( vpx_img_read ( & raw , infile ) ) { ++ frame_count ; if ( frame_count == 22 && encoder -> fourcc == VP8_FOURCC ) { set_roi_map ( & cfg , & codec ) ; } else if ( frame_count == 33 ) { set_active_map ( & cfg , & codec ) ; } else if ( frame_count == 44 ) { unset_active_map ( & cfg , & codec ) ; } encode_frame ( & codec , & raw , frame_count , writer ) ; } <S2SV_StartBug> encode_frame ( & codec , NULL , - 1 , writer ) ; <S2SV_EndBug> printf ( \"\\\\n\" ) ; fclose ( infile ) ; printf ( \"Processed<S2SV_blank>%d<S2SV_blank>frames.\\\\n\" , frame_count ) ; vpx_img_free ( & raw ) ; if ( vpx_codec_destroy ( & codec ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>codec.\" ) ; vpx_video_writer_close ( writer ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; vpx_codec_ctx_t codec <S2SV_ModEnd> ; vpx_codec_enc_cfg_t cfg <S2SV_ModStart> ; vpx_codec_enc_cfg_t cfg <S2SV_ModEnd> ; int frame_count <S2SV_ModStart> ; vpx_image_t raw <S2SV_ModEnd> ; vpx_codec_err_t res <S2SV_ModStart> ; VpxVideoInfo info <S2SV_ModEnd> ; VpxVideoWriter * <S2SV_ModStart> \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments\" ) ; memset ( & info , 0 , sizeof ( info ) ) ; <S2SV_ModStart> ; if ( encoder == NULL ) { <S2SV_ModEnd> die ( \"Unsupported<S2SV_blank>codec.\" <S2SV_ModStart> die ( \"Unsupported<S2SV_blank>codec.\" ) ; } assert ( encoder != NULL <S2SV_ModStart> ( encoder -> codec_interface <S2SV_ModEnd> ( ) ) <S2SV_ModStart> ( encoder -> codec_interface <S2SV_ModEnd> ( ) , <S2SV_ModStart> , encoder -> codec_interface <S2SV_ModEnd> ( ) , <S2SV_ModStart> ) ; } while ( <S2SV_ModStart> , writer ) ) { } <S2SV_ModEnd> printf ( \"\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 static void kvmclock_reset ( struct kvm_vcpu * vcpu ) { <S2SV_StartBug> if ( vcpu -> arch . time_page ) { <S2SV_EndBug> kvm_release_page_dirty ( vcpu -> arch . time_page ) ; vcpu -> arch . time_page = NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu ) { <S2SV_ModEnd> vcpu -> arch <S2SV_ModStart> -> arch . pv_time_enabled = false ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4817\n\n```\nCWE-000 <S2SV_StartBug> void close_connection ( h2o_http2_conn_t * conn ) <S2SV_EndBug> { conn -> state = H2O_HTTP2_CONN_STATE_IS_CLOSING ; if ( conn -> _write . buf_in_flight != NULL || h2o_timeout_is_linked ( & conn -> _write . timeout_entry ) ) { } else { close_connection_now ( conn ) ; <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> int <S2SV_ModEnd> close_connection ( h2o_http2_conn_t <S2SV_ModStart> conn ) ; return - 1 ; } return 0 ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12730\n\n```\nCWE-908 static int aa_read_header ( AVFormatContext * s ) { int i , j , idx , largest_idx = - 1 ; uint32_t nkey , nval , toc_size , npairs , header_seed = 0 , start ; char key [ 128 ] , val [ 128 ] , codec_name [ 64 ] = { 0 } ; uint8_t output [ 24 ] , dst [ 8 ] , src [ 8 ] ; int64_t largest_size = - 1 , current_size = - 1 , chapter_pos ; struct toc_entry { uint32_t offset ; uint32_t size ; } TOC [ MAX_TOC_ENTRIES ] ; uint32_t header_key_part [ 4 ] ; uint8_t header_key [ 16 ] = { 0 } ; AADemuxContext * c = s -> priv_data ; AVIOContext * pb = s -> pb ; AVStream * st ; <S2SV_StartBug> avio_skip ( pb , 4 ) ; <S2SV_EndBug> avio_skip ( pb , 4 ) ; toc_size = avio_rb32 ( pb ) ; avio_skip ( pb , 4 ) ; if ( toc_size > MAX_TOC_ENTRIES ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < toc_size ; i ++ ) { avio_skip ( pb , 4 ) ; TOC [ i ] . offset = avio_rb32 ( pb ) ; TOC [ i ] . size = avio_rb32 ( pb ) ; } avio_skip ( pb , 24 ) ; npairs = avio_rb32 ( pb ) ; if ( npairs > MAX_DICTIONARY_ENTRIES ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < npairs ; i ++ ) { memset ( val , 0 , sizeof ( val ) ) ; memset ( key , 0 , sizeof ( key ) ) ; avio_skip ( pb , 1 ) ; nkey = avio_rb32 ( pb ) ; nval = avio_rb32 ( pb ) ; avio_get_str ( pb , nkey , key , sizeof ( key ) ) ; avio_get_str ( pb , nval , val , sizeof ( val ) ) ; if ( ! strcmp ( key , \"codec\" ) ) { av_log ( s , AV_LOG_DEBUG , \"Codec<S2SV_blank>is<S2SV_blank><%s>\\\\n\" , val ) ; strncpy ( codec_name , val , sizeof ( codec_name ) - 1 ) ; } else if ( ! strcmp ( key , \"HeaderSeed\" ) ) { av_log ( s , AV_LOG_DEBUG , \"HeaderSeed<S2SV_blank>is<S2SV_blank><%s>\\\\n\" , val ) ; header_seed = atoi ( val ) ; } else if ( ! strcmp ( key , \"HeaderKey\" ) ) { av_log ( s , AV_LOG_DEBUG , \"HeaderKey<S2SV_blank>is<S2SV_blank><%s>\\\\n\" , val ) ; <S2SV_StartBug> sscanf ( val , \"%\" SCNu32 \"%\" SCNu32 \"%\" SCNu32 \"%\" SCNu32 , <S2SV_EndBug> & header_key_part [ 0 ] , & header_key_part [ 1 ] , & header_key_part [ 2 ] , & header_key_part [ 3 ] ) ; <S2SV_StartBug> for ( idx = 0 ; idx < 4 ; idx ++ ) { <S2SV_EndBug> AV_WB32 ( & header_key [ idx * 4 ] , header_key_part [ idx ] ) ; } av_log ( s , AV_LOG_DEBUG , \"Processed<S2SV_blank>HeaderKey<S2SV_blank>is<S2SV_blank>\" ) ; for ( i = 0 ; i < 16 ; i ++ ) av_log ( s , AV_LOG_DEBUG , \"%02x\" , header_key [ i ] ) ; av_log ( s , AV_LOG_DEBUG , \"\\\\n\" ) ; } else { av_dict_set ( & s -> metadata , key , val , 0 ) ; } } if ( c -> aa_fixed_key_len != 16 ) { av_log ( s , AV_LOG_ERROR , \"aa_fixed_key<S2SV_blank>value<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>16<S2SV_blank>bytes!\\\\n\" ) ; return AVERROR ( EINVAL ) ; } if ( ( c -> codec_second_size = get_second_size ( codec_name ) ) == - 1 ) { av_log ( s , AV_LOG_ERROR , \"unknown<S2SV_blank>codec<S2SV_blank><%s>!\\\\n\" , codec_name ) ; return AVERROR ( EINVAL ) ; } c -> tea_ctx = av_tea_alloc ( ) ; if ( ! c -> tea_ctx ) return AVERROR ( ENOMEM ) ; av_tea_init ( c -> tea_ctx , c -> aa_fixed_key , 16 ) ; output [ 0 ] = output [ 1 ] = 0 ; memcpy ( output + 2 , header_key , 16 ) ; idx = 0 ; for ( i = 0 ; i < 3 ; i ++ ) { AV_WB32 ( src , header_seed ) ; AV_WB32 ( src + 4 , header_seed + 1 ) ; header_seed += 2 ; av_tea_crypt ( c -> tea_ctx , dst , src , 1 , NULL , 0 ) ; for ( j = 0 ; j < TEA_BLOCK_SIZE && idx < 18 ; j += 1 , idx += 1 ) { output [ idx ] = output [ idx ] ^ dst [ j ] ; } } memcpy ( c -> file_key , output + 2 , 16 ) ; av_log ( s , AV_LOG_DEBUG , \"File<S2SV_blank>key<S2SV_blank>is<S2SV_blank>\" ) ; for ( i = 0 ; i < 16 ; i ++ ) av_log ( s , AV_LOG_DEBUG , \"%02x\" , c -> file_key [ i ] ) ; av_log ( s , AV_LOG_DEBUG , \"\\\\n\" ) ; st = avformat_new_stream ( s , NULL ) ; if ( ! st ) { av_freep ( & c -> tea_ctx ) ; return AVERROR ( ENOMEM ) ; } st -> codecpar -> codec_type = AVMEDIA_TYPE_AUDIO ; if ( ! strcmp ( codec_name , \"mp332\" ) ) { st -> codecpar -> codec_id = AV_CODEC_ID_MP3 ; st -> codecpar -> sample_rate = 22050 ; st -> need_parsing = AVSTREAM_PARSE_FULL_RAW ; avpriv_set_pts_info ( st , 64 , 8 , 32000 * TIMEPREC ) ; } else if ( ! strcmp ( codec_name , \"acelp85\" ) ) { st -> codecpar -> codec_id = AV_CODEC_ID_SIPR ; st -> codecpar -> block_align = 19 ; st -> codecpar -> channels = 1 ; st -> codecpar -> sample_rate = 8500 ; st -> codecpar -> bit_rate = 8500 ; st -> need_parsing = AVSTREAM_PARSE_FULL_RAW ; avpriv_set_pts_info ( st , 64 , 8 , 8500 * TIMEPREC ) ; } else if ( ! strcmp ( codec_name , \"acelp16\" ) ) { st -> codecpar -> codec_id = AV_CODEC_ID_SIPR ; st -> codecpar -> block_align = 20 ; st -> codecpar -> channels = 1 ; st -> codecpar -> sample_rate = 16000 ; st -> codecpar -> bit_rate = 16000 ; st -> need_parsing = AVSTREAM_PARSE_FULL_RAW ; avpriv_set_pts_info ( st , 64 , 8 , 16000 * TIMEPREC ) ; } for ( i = 1 ; i < toc_size ; i ++ ) { current_size = TOC [ i ] . size ; if ( current_size > largest_size ) { largest_idx = i ; largest_size = current_size ; } } start = TOC [ largest_idx ] . offset ; avio_seek ( pb , start , SEEK_SET ) ; st -> start_time = 0 ; c -> content_start = start ; c -> content_end = start + largest_size ; while ( ( chapter_pos = avio_tell ( pb ) ) >= 0 && chapter_pos < c -> content_end ) { int chapter_idx = s -> nb_chapters ; uint32_t chapter_size = avio_rb32 ( pb ) ; if ( chapter_size == 0 ) break ; chapter_pos -= start + CHAPTER_HEADER_SIZE * chapter_idx ; avio_skip ( pb , 4 + chapter_size ) ; if ( ! avpriv_new_chapter ( s , chapter_idx , st -> time_base , chapter_pos * TIMEPREC , ( chapter_pos + chapter_size ) * TIMEPREC , NULL ) ) return AVERROR ( ENOMEM ) ; } st -> duration = ( largest_size - CHAPTER_HEADER_SIZE * s -> nb_chapters ) * TIMEPREC ; ff_update_cur_dts ( s , st , 0 ) ; avio_seek ( pb , start , SEEK_SET ) ; c -> current_chapter_size = 0 ; c -> seek_offset = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * st ; int ret ; <S2SV_ModStart> val ) ; ret = <S2SV_ModStart> ] ) ; if ( ret != 4 ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static size_t read_uncompressed_header ( VP9Decoder * pbi , <S2SV_StartBug> struct vp9_read_bit_buffer * rb ) { <S2SV_EndBug> VP9_COMMON * const cm = & pbi -> common ; <S2SV_StartBug> size_t sz ; <S2SV_EndBug> <S2SV_StartBug> int i ; <S2SV_EndBug> cm -> last_frame_type = cm -> frame_type ; <S2SV_StartBug> if ( vp9_rb_read_literal ( rb , 2 ) != VP9_FRAME_MARKER ) <S2SV_EndBug> vpx_internal_error ( & cm -> error , VPX_CODEC_UNSUP_BITSTREAM , \"Invalid<S2SV_blank>frame<S2SV_blank>marker\" ) ; <S2SV_StartBug> cm -> profile = read_profile ( rb ) ; <S2SV_EndBug> if ( cm -> profile >= MAX_PROFILES ) vpx_internal_error ( & cm -> error , VPX_CODEC_UNSUP_BITSTREAM , \"Unsupported<S2SV_blank>bitstream<S2SV_blank>profile\" ) ; <S2SV_StartBug> cm -> show_existing_frame = vp9_rb_read_bit ( rb ) ; <S2SV_EndBug> if ( cm -> show_existing_frame ) { <S2SV_StartBug> const int frame_to_show = cm -> ref_frame_map [ vp9_rb_read_literal ( rb , 3 ) ] ; <S2SV_EndBug> <S2SV_StartBug> if ( cm -> frame_bufs [ frame_to_show ] . ref_count < 1 ) <S2SV_EndBug> vpx_internal_error ( & cm -> error , VPX_CODEC_UNSUP_BITSTREAM , \"Buffer<S2SV_blank>%d<S2SV_blank>does<S2SV_blank>not<S2SV_blank>contain<S2SV_blank>a<S2SV_blank>decoded<S2SV_blank>frame\" , frame_to_show ) ; <S2SV_StartBug> ref_cnt_fb ( cm -> frame_bufs , & cm -> new_fb_idx , frame_to_show ) ; <S2SV_EndBug> pbi -> refresh_frame_flags = 0 ; cm -> lf . filter_level = 0 ; cm -> show_frame = 1 ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } <S2SV_StartBug> cm -> frame_type = ( FRAME_TYPE ) vp9_rb_read_bit ( rb ) ; <S2SV_EndBug> <S2SV_StartBug> cm -> show_frame = vp9_rb_read_bit ( rb ) ; <S2SV_EndBug> <S2SV_StartBug> cm -> error_resilient_mode = vp9_rb_read_bit ( rb ) ; <S2SV_EndBug> if ( cm -> frame_type == KEY_FRAME ) { <S2SV_StartBug> check_sync_code ( cm , rb ) ; <S2SV_EndBug> if ( cm -> profile > PROFILE_1 ) cm -> bit_depth = vp9_rb_read_bit ( rb ) ? BITS_12 : BITS_10 ; cm -> color_space = ( COLOR_SPACE ) vp9_rb_read_literal ( rb , 3 ) ; if ( cm -> color_space != SRGB ) { vp9_rb_read_bit ( rb ) ; if ( cm -> profile >= PROFILE_1 ) { cm -> subsampling_x = vp9_rb_read_bit ( rb ) ; cm -> subsampling_y = vp9_rb_read_bit ( rb ) ; vp9_rb_read_bit ( rb ) ; } else { cm -> subsampling_y = cm -> subsampling_x = 1 ; } } else { if ( cm -> profile >= PROFILE_1 ) { cm -> subsampling_y = cm -> subsampling_x = 0 ; vp9_rb_read_bit ( rb ) ; } else { vpx_internal_error ( & cm -> error , VPX_CODEC_UNSUP_BITSTREAM , <S2SV_StartBug> \"RGB<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>profile<S2SV_blank>0\" ) ; <S2SV_EndBug> } } pbi -> refresh_frame_flags = ( 1 << REF_FRAMES ) - 1 ; for ( i = 0 ; i < REFS_PER_FRAME ; ++ i ) { <S2SV_StartBug> cm -> frame_refs [ i ] . idx = cm -> new_fb_idx ; <S2SV_EndBug> <S2SV_StartBug> cm -> frame_refs [ i ] . buf = get_frame_new_buffer ( cm ) ; <S2SV_EndBug> } <S2SV_StartBug> setup_frame_size ( cm , rb ) ; <S2SV_EndBug> } else { <S2SV_StartBug> cm -> intra_only = cm -> show_frame ? 0 : vp9_rb_read_bit ( rb ) ; <S2SV_EndBug> cm -> reset_frame_context = cm -> error_resilient_mode ? <S2SV_StartBug> 0 : vp9_rb_read_literal ( rb , 2 ) ; <S2SV_EndBug> if ( cm -> intra_only ) { <S2SV_StartBug> check_sync_code ( cm , rb ) ; <S2SV_EndBug> <S2SV_StartBug> pbi -> refresh_frame_flags = vp9_rb_read_literal ( rb , REF_FRAMES ) ; <S2SV_EndBug> setup_frame_size ( cm , rb ) ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> pbi -> refresh_frame_flags = vp9_rb_read_literal ( rb , REF_FRAMES ) ; <S2SV_EndBug> for ( i = 0 ; i < REFS_PER_FRAME ; ++ i ) { <S2SV_StartBug> const int ref = vp9_rb_read_literal ( rb , REF_FRAMES_LOG2 ) ; <S2SV_EndBug> const int idx = cm -> ref_frame_map [ ref ] ; <S2SV_StartBug> cm -> frame_refs [ i ] . idx = idx ; <S2SV_EndBug> <S2SV_StartBug> cm -> frame_refs [ i ] . buf = & cm -> frame_bufs [ idx ] . buf ; <S2SV_EndBug> <S2SV_StartBug> cm -> ref_frame_sign_bias [ LAST_FRAME + i ] = vp9_rb_read_bit ( rb ) ; <S2SV_EndBug> } setup_frame_size_with_refs ( cm , rb ) ; <S2SV_StartBug> cm -> allow_high_precision_mv = vp9_rb_read_bit ( rb ) ; <S2SV_EndBug> cm -> interp_filter = read_interp_filter ( rb ) ; for ( i = 0 ; i < REFS_PER_FRAME ; ++ i ) { RefBuffer * const ref_buf = & cm -> frame_refs [ i ] ; <S2SV_StartBug> vp9_setup_scale_factors_for_frame ( & ref_buf -> sf , <S2SV_EndBug> ref_buf -> buf -> y_crop_width , ref_buf -> buf -> y_crop_height , <S2SV_StartBug> cm -> width , cm -> height ) ; <S2SV_EndBug> <S2SV_StartBug> if ( vp9_is_scaled ( & ref_buf -> sf ) ) <S2SV_EndBug> <S2SV_StartBug> vp9_extend_frame_borders ( ref_buf -> buf ) ; <S2SV_EndBug> } } } if ( ! cm -> error_resilient_mode ) { <S2SV_StartBug> cm -> coding_use_prev_mi = 1 ; <S2SV_EndBug> <S2SV_StartBug> cm -> refresh_frame_context = vp9_rb_read_bit ( rb ) ; <S2SV_EndBug> cm -> frame_parallel_decoding_mode = vp9_rb_read_bit ( rb ) ; } else { <S2SV_StartBug> cm -> coding_use_prev_mi = 0 ; <S2SV_EndBug> cm -> refresh_frame_context = 0 ; cm -> frame_parallel_decoding_mode = 1 ; <S2SV_StartBug> } <S2SV_EndBug> cm -> frame_context_idx = vp9_rb_read_literal ( rb , FRAME_CONTEXTS_LOG2 ) ; if ( frame_is_intra_only ( cm ) || cm -> error_resilient_mode ) vp9_setup_past_independence ( cm ) ; setup_loopfilter ( & cm -> lf , rb ) ; setup_quantization ( cm , & pbi -> mb , rb ) ; setup_segmentation ( & cm -> seg , rb ) ; <S2SV_StartBug> setup_tile_info ( cm , rb ) ; <S2SV_EndBug> <S2SV_StartBug> sz = vp9_rb_read_literal ( rb , 16 ) ; <S2SV_EndBug> if ( sz == 0 ) vpx_internal_error ( & cm -> error , VPX_CODEC_CORRUPT_FRAME , \"Invalid<S2SV_blank>header<S2SV_blank>size\" ) ; return sz ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pbi , struct vpx_read_bit_buffer <S2SV_ModEnd> * rb ) <S2SV_ModStart> -> common ; BufferPool * const pool = cm -> buffer_pool ; RefCntBuffer * const frame_bufs = pool -> frame_bufs ; int i , mask , ref_index = 0 ; <S2SV_ModStart> size_t sz ; <S2SV_ModEnd> cm -> last_frame_type <S2SV_ModStart> -> frame_type ; cm -> last_intra_only = cm -> intra_only ; if ( vpx_rb_read_literal <S2SV_ModEnd> ( rb , <S2SV_ModStart> -> profile = vp9_read_profile ( rb ) ; # if CONFIG_VP9_HIGHBITDEPTH <S2SV_ModEnd> if ( cm <S2SV_ModStart> \"Unsupported<S2SV_blank>bitstream<S2SV_blank>profile\" ) ; # else if ( cm -> profile >= PROFILE_2 ) vpx_internal_error ( & cm -> error , VPX_CODEC_UNSUP_BITSTREAM , \"Unsupported<S2SV_blank>bitstream<S2SV_blank>profile\" ) ; # endif <S2SV_ModStart> -> show_existing_frame = vpx_rb_read_bit <S2SV_ModEnd> ( rb ) <S2SV_ModStart> -> ref_frame_map [ vpx_rb_read_literal <S2SV_ModEnd> ( rb , <S2SV_ModStart> ) ] ; lock_buffer_pool ( pool ) ; if ( frame_to_show < 0 || <S2SV_ModEnd> frame_bufs [ frame_to_show <S2SV_ModStart> < 1 ) { unlock_buffer_pool ( pool ) ; <S2SV_ModStart> frame_to_show ) ; } ref_cnt_fb ( <S2SV_ModEnd> frame_bufs , & <S2SV_ModStart> new_fb_idx , frame_to_show ) ; unlock_buffer_pool ( pool <S2SV_ModStart> = 1 ; if ( pbi -> frame_parallel_decode ) { for ( i = 0 ; i < REF_FRAMES ; ++ i ) cm -> next_ref_frame_map [ i ] = cm -> ref_frame_map [ i ] ; } <S2SV_ModStart> ( FRAME_TYPE ) vpx_rb_read_bit <S2SV_ModEnd> ( rb ) <S2SV_ModStart> -> show_frame = vpx_rb_read_bit <S2SV_ModEnd> ( rb ) <S2SV_ModStart> -> error_resilient_mode = vpx_rb_read_bit <S2SV_ModEnd> ( rb ) <S2SV_ModStart> KEY_FRAME ) { if ( ! vp9_read_sync_code ( rb ) ) <S2SV_ModEnd> vpx_internal_error ( & <S2SV_ModStart> , VPX_CODEC_UNSUP_BITSTREAM , \"Invalid<S2SV_blank>frame<S2SV_blank>sync<S2SV_blank>code\" ) ; read_bitdepth_colorspace_sampling ( cm , rb ) ; <S2SV_ModEnd> pbi -> refresh_frame_flags <S2SV_ModStart> . idx = INVALID_IDX <S2SV_ModEnd> ; cm -> <S2SV_ModStart> . buf = NULL <S2SV_ModEnd> ; } setup_frame_size <S2SV_ModStart> rb ) ; if ( pbi -> need_resync ) { memset ( & cm -> ref_frame_map , - 1 , sizeof ( cm -> ref_frame_map ) ) ; pbi -> need_resync = 0 ; } <S2SV_ModStart> ? 0 : vpx_rb_read_bit <S2SV_ModEnd> ( rb ) <S2SV_ModStart> ? 0 : vpx_rb_read_literal <S2SV_ModEnd> ( rb , <S2SV_ModStart> intra_only ) { if ( ! vp9_read_sync_code ( rb ) ) vpx_internal_error ( & cm -> error , VPX_CODEC_UNSUP_BITSTREAM , \"Invalid<S2SV_blank>frame<S2SV_blank>sync<S2SV_blank>code\" ) ; if ( cm -> profile > PROFILE_0 ) { read_bitdepth_colorspace_sampling ( cm , rb ) ; } else { cm -> color_space = VPX_CS_BT_601 ; cm -> subsampling_y = cm -> subsampling_x = 1 ; cm -> bit_depth = VPX_BITS_8 ; # if CONFIG_VP9_HIGHBITDEPTH cm -> use_highbitdepth = 0 ; # endif } <S2SV_ModEnd> pbi -> refresh_frame_flags <S2SV_ModStart> -> refresh_frame_flags = vpx_rb_read_literal <S2SV_ModEnd> ( rb , <S2SV_ModStart> rb ) ; if ( pbi -> need_resync ) { memset ( & cm -> ref_frame_map , - 1 , sizeof ( cm -> ref_frame_map ) ) ; pbi -> need_resync = 0 ; } } else if ( pbi -> need_resync != 1 ) <S2SV_ModEnd> { pbi -> <S2SV_ModStart> -> refresh_frame_flags = vpx_rb_read_literal <S2SV_ModEnd> ( rb , <S2SV_ModStart> int ref = vpx_rb_read_literal <S2SV_ModEnd> ( rb , <S2SV_ModStart> ref ] ; RefBuffer * const ref_frame = & <S2SV_ModStart> [ i ] ; ref_frame -> <S2SV_ModEnd> idx = idx <S2SV_ModStart> = idx ; ref_frame -> buf = & frame_bufs [ idx <S2SV_ModEnd> ] . buf <S2SV_ModStart> ] . buf <S2SV_ModEnd> ; cm -> <S2SV_ModStart> i ] = vpx_rb_read_bit <S2SV_ModEnd> ( rb ) <S2SV_ModStart> -> allow_high_precision_mv = vpx_rb_read_bit <S2SV_ModEnd> ( rb ) <S2SV_ModStart> i ] ; # if CONFIG_VP9_HIGHBITDEPTH <S2SV_ModStart> cm -> height , cm -> use_highbitdepth ) ; # else vp9_setup_scale_factors_for_frame <S2SV_ModEnd> ( & ref_buf <S2SV_ModStart> ref_buf -> sf , <S2SV_ModEnd> ref_buf -> buf <S2SV_ModStart> ref_buf -> buf -> y_crop_width , ref_buf -> buf -> y_crop_height , cm -> width , cm -> height ) ; # endif } } } # if CONFIG_VP9_HIGHBITDEPTH get_frame_new_buffer ( cm ) -> bit_depth = cm -> bit_depth ; # endif get_frame_new_buffer ( cm ) -> color_space = cm -> color_space ; if ( pbi -> need_resync ) { vpx_internal_error ( & cm -> error , VPX_CODEC_CORRUPT_FRAME , \"Keyframe<S2SV_blank>/<S2SV_blank>intra-only<S2SV_blank>frame<S2SV_blank>required<S2SV_blank>to<S2SV_blank>reset<S2SV_blank>decoder\" \"<S2SV_blank>state\" ) ; <S2SV_ModEnd> } if ( <S2SV_ModStart> { cm -> refresh_frame_context = vpx_rb_read_bit ( rb ) ; cm -> frame_parallel_decoding_mode = vpx_rb_read_bit ( rb ) ; } else { cm -> refresh_frame_context = 0 ; cm -> frame_parallel_decoding_mode <S2SV_ModEnd> = 1 ; <S2SV_ModStart> = 1 ; } cm -> frame_context_idx = vpx_rb_read_literal ( rb , FRAME_CONTEXTS_LOG2 ) ; lock_buffer_pool ( pool ) ; for ( mask = pbi -> refresh_frame_flags ; mask ; mask >>= 1 ) { if ( mask & 1 ) { cm -> next_ref_frame_map [ ref_index ] = cm -> new_fb_idx ; ++ frame_bufs [ cm -> new_fb_idx ] . ref_count <S2SV_ModEnd> ; } else <S2SV_ModStart> { cm -> next_ref_frame_map [ ref_index ] = cm -> ref_frame_map [ ref_index ] ; } if ( cm -> ref_frame_map [ ref_index ] >= 0 ) ++ frame_bufs [ cm -> ref_frame_map [ ref_index ] ] . ref_count ; ++ ref_index ; } for ( ; ref_index < REF_FRAMES ; ++ ref_index ) { cm -> next_ref_frame_map [ ref_index ] = cm -> ref_frame_map [ ref_index ] ; if ( cm -> ref_frame_map [ ref_index ] >= 0 ) ++ frame_bufs [ cm -> ref_frame_map [ ref_index ] ] . ref_count ; } unlock_buffer_pool ( pool ) ; pbi -> hold_ref_buf <S2SV_ModEnd> = 1 ; <S2SV_ModStart> = 1 ; <S2SV_ModEnd> if ( frame_is_intra_only <S2SV_ModStart> rb ) ; setup_segmentation_dequant ( cm ) ; <S2SV_ModStart> ; sz = vpx_rb_read_literal <S2SV_ModEnd> ( rb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13014\n\n```\nCWE-125 void wb_print ( netdissect_options * ndo , register const void * hdr , register u_int len ) { register const struct pkt_hdr * ph ; ph = ( const struct pkt_hdr * ) hdr ; if ( len < sizeof ( * ph ) || ! ND_TTEST ( * ph ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } len -= sizeof ( * ph ) ; if ( ph -> ph_flags ) ND_PRINT ( ( ndo , \"*\" ) ) ; switch ( ph -> ph_type ) { case PT_KILL : ND_PRINT ( ( ndo , \"<S2SV_blank>wb-kill\" ) ) ; return ; case PT_ID : if ( wb_id ( ndo , ( const struct pkt_id * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_RREQ : if ( wb_rreq ( ndo , ( const struct pkt_rreq * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_RREP : if ( wb_rrep ( ndo , ( const struct pkt_rrep * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_DRAWOP : if ( wb_drawop ( ndo , ( const struct pkt_dop * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_PREQ : if ( wb_preq ( ndo , ( const struct pkt_preq * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_PREP : if ( wb_prep ( ndo , ( const struct pkt_prep * ) ( ph + 1 ) , len ) >= 0 ) <S2SV_StartBug> return ; <S2SV_EndBug> break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>wb-%d!\" , ph -> ph_type ) ) ; return ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> 0 ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2546\n\n```\nCWE-362 static int snd_timer_user_release ( struct inode * inode , struct file * file ) { struct snd_timer_user * tu ; if ( file -> private_data ) { tu = file -> private_data ; file -> private_data = NULL ; <S2SV_StartBug> if ( tu -> timeri ) <S2SV_EndBug> <S2SV_StartBug> snd_timer_close ( tu -> timeri ) ; <S2SV_EndBug> kfree ( tu -> queue ) ; kfree ( tu -> tqueue ) ; kfree ( tu ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; mutex_lock ( & tu -> ioctl_lock ) ; <S2SV_ModStart> tu -> timeri ) ; mutex_unlock ( & tu -> ioctl_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-120 enum ImapAuthRes imap_auth_cram_md5 ( struct ImapData * idata , const char * method ) { char ibuf [ LONG_STRING * 2 ] , obuf [ LONG_STRING ] ; unsigned char hmac_response [ MD5_DIGEST_LEN ] ; int len ; int rc ; if ( ! mutt_bit_isset ( idata -> capabilities , ACRAM_MD5 ) ) return IMAP_AUTH_UNAVAIL ; mutt_message ( _ ( \"Authenticating<S2SV_blank>(CRAM-MD5)...\" ) ) ; if ( mutt_account_getlogin ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; if ( mutt_account_getpass ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; imap_cmd_start ( idata , \"AUTHENTICATE<S2SV_blank>CRAM-MD5\" ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_RESPOND ) { mutt_debug ( 1 , \"Invalid<S2SV_blank>response<S2SV_blank>from<S2SV_blank>server:<S2SV_blank>%s\\\\n\" , ibuf ) ; goto bail ; } <S2SV_StartBug> len = mutt_b64_decode ( obuf , idata -> buf + 2 ) ; <S2SV_EndBug> if ( len == - 1 ) { mutt_debug ( 1 , \"Error<S2SV_blank>decoding<S2SV_blank>base64<S2SV_blank>response.\\\\n\" ) ; goto bail ; } obuf [ len ] = '\\\\0' ; mutt_debug ( 2 , \"CRAM<S2SV_blank>challenge:<S2SV_blank>%s\\\\n\" , obuf ) ; hmac_md5 ( idata -> conn -> account . pass , obuf , hmac_response ) ; int off = snprintf ( obuf , sizeof ( obuf ) , \"%s<S2SV_blank>\" , idata -> conn -> account . user ) ; mutt_md5_toascii ( hmac_response , obuf + off ) ; mutt_debug ( 2 , \"CRAM<S2SV_blank>response:<S2SV_blank>%s\\\\n\" , obuf ) ; mutt_b64_encode ( ibuf , obuf , strlen ( obuf ) , sizeof ( ibuf ) - 2 ) ; mutt_str_strcat ( ibuf , sizeof ( ibuf ) , \"\\\\r\\\\n\" ) ; mutt_socket_send ( idata -> conn , ibuf ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_OK ) { mutt_debug ( 1 , \"Error<S2SV_blank>receiving<S2SV_blank>server<S2SV_blank>response.\\\\n\" ) ; goto bail ; } if ( imap_code ( idata -> buf ) ) return IMAP_AUTH_SUCCESS ; bail : mutt_error ( _ ( \"CRAM-MD5<S2SV_blank>authentication<S2SV_blank>failed.\" ) ) ; return IMAP_AUTH_FAILURE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buf + 2 , sizeof ( obuf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 static void vrrp_tfile_end_handler ( void ) { vrrp_tracked_file_t * tfile = LIST_TAIL_DATA ( vrrp_data -> vrrp_track_files ) ; struct stat statb ; FILE * tf ; int ret ; if ( ! tfile -> file_path ) { report_config_error ( CONFIG_GENERAL_ERROR , \"No<S2SV_blank>file<S2SV_blank>set<S2SV_blank>for<S2SV_blank>track_file<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>removing\" , tfile -> fname ) ; free_list_element ( vrrp_data -> vrrp_track_files , vrrp_data -> vrrp_track_files -> tail ) ; return ; } if ( track_file_init == TRACK_FILE_NO_INIT ) return ; ret = stat ( tfile -> file_path , & statb ) ; if ( ! ret ) { if ( track_file_init == TRACK_FILE_CREATE ) { return ; } if ( ( statb . st_mode & S_IFMT ) != S_IFREG ) { report_config_error ( CONFIG_GENERAL_ERROR , \"Cannot<S2SV_blank>initialise<S2SV_blank>track<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>it<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>regular<S2SV_blank>file\" , tfile -> fname ) ; return ; } if ( reload ) return ; } if ( ! __test_bit ( CONFIG_TEST_BIT , & debug ) ) { <S2SV_StartBug> if ( ( tf = fopen ( tfile -> file_path , \"w\" ) ) ) { <S2SV_EndBug> fprintf ( tf , \"%d\\\\n\" , track_file_init_value ) ; fclose ( tf ) ; } else report_config_error ( CONFIG_GENERAL_ERROR , \"Unable<S2SV_blank>to<S2SV_blank>initialise<S2SV_blank>track<S2SV_blank>file<S2SV_blank>%s\" , tfile -> fname ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( tf = fopen_safe <S2SV_ModEnd> ( tfile ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9003\n\n```\nCWE-416 static void free_user ( struct kref * ref ) { struct ipmi_user * user = container_of ( ref , struct ipmi_user , refcount ) ; <S2SV_StartBug> kfree ( user ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> refcount ) ; cleanup_srcu_struct ( & user -> release_barrier ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11399\n\n```\nCWE-125 static int ape_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame_ptr , AVPacket * avpkt ) { AVFrame * frame = data ; const uint8_t * buf = avpkt -> data ; APEContext * s = avctx -> priv_data ; uint8_t * sample8 ; int16_t * sample16 ; int32_t * sample24 ; int i , ch , ret ; <S2SV_StartBug> int blockstodecode ; <S2SV_EndBug> av_assert0 ( s -> samples >= 0 ) ; if ( ! s -> samples ) { uint32_t nblocks , offset ; int buf_size ; if ( ! avpkt -> size ) { * got_frame_ptr = 0 ; return 0 ; } if ( avpkt -> size < 8 ) { av_log ( avctx , AV_LOG_ERROR , \"Packet<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\\\\n\" ) ; return AVERROR_INVALIDDATA ; } buf_size = avpkt -> size & ~ 3 ; if ( buf_size != avpkt -> size ) { av_log ( avctx , AV_LOG_WARNING , \"packet<S2SV_blank>size<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4.<S2SV_blank>\" \"extra<S2SV_blank>bytes<S2SV_blank>at<S2SV_blank>the<S2SV_blank>end<S2SV_blank>will<S2SV_blank>be<S2SV_blank>skipped.\\\\n\" ) ; } if ( s -> fileversion < 3950 ) buf_size += 2 ; av_fast_padded_malloc ( & s -> data , & s -> data_size , buf_size ) ; if ( ! s -> data ) return AVERROR ( ENOMEM ) ; s -> bdsp . bswap_buf ( ( uint32_t * ) s -> data , ( const uint32_t * ) buf , buf_size >> 2 ) ; memset ( s -> data + ( buf_size & ~ 3 ) , 0 , buf_size & 3 ) ; s -> ptr = s -> data ; s -> data_end = s -> data + buf_size ; nblocks = bytestream_get_be32 ( & s -> ptr ) ; offset = bytestream_get_be32 ( & s -> ptr ) ; if ( s -> fileversion >= 3900 ) { if ( offset > 3 ) { av_log ( avctx , AV_LOG_ERROR , \"Incorrect<S2SV_blank>offset<S2SV_blank>passed\\\\n\" ) ; s -> data = NULL ; return AVERROR_INVALIDDATA ; } if ( s -> data_end - s -> ptr < offset ) { av_log ( avctx , AV_LOG_ERROR , \"Packet<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> ptr += offset ; } else { if ( ( ret = init_get_bits8 ( & s -> gb , s -> ptr , s -> data_end - s -> ptr ) ) < 0 ) return ret ; if ( s -> fileversion > 3800 ) skip_bits_long ( & s -> gb , offset * 8 ) ; else skip_bits_long ( & s -> gb , offset ) ; } <S2SV_StartBug> if ( ! nblocks || nblocks > INT_MAX ) { <S2SV_EndBug> av_log ( avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>sample<S2SV_blank>count:<S2SV_blank>%\" PRIu32 \".\\\\n\" , nblocks ) ; return AVERROR_INVALIDDATA ; } if ( init_frame_decoder ( s ) < 0 ) { av_log ( avctx , AV_LOG_ERROR , \"Error<S2SV_blank>reading<S2SV_blank>frame<S2SV_blank>header\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> samples = nblocks ; } if ( ! s -> data ) { * got_frame_ptr = 0 ; return avpkt -> size ; } blockstodecode = FFMIN ( s -> blocks_per_loop , s -> samples ) ; if ( s -> fileversion < 3930 ) blockstodecode = s -> samples ; <S2SV_StartBug> av_fast_malloc ( & s -> decoded_buffer , & s -> decoded_size , <S2SV_EndBug> <S2SV_StartBug> 2 * FFALIGN ( blockstodecode , 8 ) * sizeof ( * s -> decoded_buffer ) ) ; <S2SV_EndBug> if ( ! s -> decoded_buffer ) return AVERROR ( ENOMEM ) ; memset ( s -> decoded_buffer , 0 , s -> decoded_size ) ; s -> decoded [ 0 ] = s -> decoded_buffer ; s -> decoded [ 1 ] = s -> decoded_buffer + FFALIGN ( blockstodecode , 8 ) ; frame -> nb_samples = blockstodecode ; if ( ( ret = ff_get_buffer ( avctx , frame , 0 ) ) < 0 ) return ret ; s -> error = 0 ; if ( ( s -> channels == 1 ) || ( s -> frameflags & APE_FRAMECODE_PSEUDO_STEREO ) ) ape_unpack_mono ( s , blockstodecode ) ; else ape_unpack_stereo ( s , blockstodecode ) ; emms_c ( ) ; if ( s -> error ) { s -> samples = 0 ; av_log ( avctx , AV_LOG_ERROR , \"Error<S2SV_blank>decoding<S2SV_blank>frame\\\\n\" ) ; return AVERROR_INVALIDDATA ; } switch ( s -> bps ) { case 8 : for ( ch = 0 ; ch < s -> channels ; ch ++ ) { sample8 = ( uint8_t * ) frame -> data [ ch ] ; for ( i = 0 ; i < blockstodecode ; i ++ ) * sample8 ++ = ( s -> decoded [ ch ] [ i ] + 0x80 ) & 0xff ; } break ; case 16 : for ( ch = 0 ; ch < s -> channels ; ch ++ ) { sample16 = ( int16_t * ) frame -> data [ ch ] ; for ( i = 0 ; i < blockstodecode ; i ++ ) * sample16 ++ = s -> decoded [ ch ] [ i ] ; } break ; case 24 : for ( ch = 0 ; ch < s -> channels ; ch ++ ) { sample24 = ( int32_t * ) frame -> data [ ch ] ; for ( i = 0 ; i < blockstodecode ; i ++ ) * sample24 ++ = s -> decoded [ ch ] [ i ] << 8 ; } break ; } s -> samples -= blockstodecode ; * got_frame_ptr = 1 ; return ! s -> samples ? avpkt -> size : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int blockstodecode ; uint64_t decoded_buffer_size <S2SV_ModStart> nblocks > INT_MAX / 2 / sizeof ( * s -> decoded_buffer ) - 8 <S2SV_ModStart> -> samples ; decoded_buffer_size = 2LL * FFALIGN ( blockstodecode , 8 ) * sizeof ( * s -> decoded_buffer ) ; av_assert0 ( decoded_buffer_size <= INT_MAX ) ; <S2SV_ModStart> -> decoded_size , decoded_buffer_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2015\n\n```\nCWE-399 int ext4_orphan_del ( handle_t * handle , struct inode * inode ) { struct list_head * prev ; struct ext4_inode_info * ei = EXT4_I ( inode ) ; struct ext4_sb_info * sbi ; __u32 ino_next ; struct ext4_iloc iloc ; int err = 0 ; <S2SV_StartBug> if ( ! EXT4_SB ( inode -> i_sb ) -> s_journal ) <S2SV_EndBug> return 0 ; mutex_lock ( & EXT4_SB ( inode -> i_sb ) -> s_orphan_lock ) ; if ( list_empty ( & ei -> i_orphan ) ) goto out ; ino_next = NEXT_ORPHAN ( inode ) ; prev = ei -> i_orphan . prev ; sbi = EXT4_SB ( inode -> i_sb ) ; jbd_debug ( 4 , \"remove<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>from<S2SV_blank>orphan<S2SV_blank>list\\\\n\" , inode -> i_ino ) ; list_del_init ( & ei -> i_orphan ) ; if ( ! handle ) goto out ; err = ext4_reserve_inode_write ( handle , inode , & iloc ) ; if ( err ) goto out_err ; if ( prev == & sbi -> s_orphan ) { jbd_debug ( 4 , \"superblock<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%u\\\\n\" , ino_next ) ; BUFFER_TRACE ( sbi -> s_sbh , \"get_write_access\" ) ; err = ext4_journal_get_write_access ( handle , sbi -> s_sbh ) ; if ( err ) goto out_brelse ; sbi -> s_es -> s_last_orphan = cpu_to_le32 ( ino_next ) ; err = ext4_handle_dirty_super ( handle , inode -> i_sb ) ; } else { struct ext4_iloc iloc2 ; struct inode * i_prev = & list_entry ( prev , struct ext4_inode_info , i_orphan ) -> vfs_inode ; jbd_debug ( 4 , \"orphan<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%u\\\\n\" , i_prev -> i_ino , ino_next ) ; err = ext4_reserve_inode_write ( handle , i_prev , & iloc2 ) ; if ( err ) goto out_brelse ; NEXT_ORPHAN ( i_prev ) = ino_next ; err = ext4_mark_iloc_dirty ( handle , i_prev , & iloc2 ) ; } if ( err ) goto out_brelse ; NEXT_ORPHAN ( inode ) = 0 ; err = ext4_mark_iloc_dirty ( handle , inode , & iloc ) ; out_err : ext4_std_error ( inode -> i_sb , err ) ; out : mutex_unlock ( & EXT4_SB ( inode -> i_sb ) -> s_orphan_lock ) ; return err ; out_brelse : brelse ( iloc . bh ) ; goto out_err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( <S2SV_ModStart> ) -> s_journal ) && ! ( EXT4_SB ( inode -> i_sb ) -> s_mount_state & EXT4_ORPHAN_FS )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1334\n\n```\nCWE-17 int lxc_attach ( const char * name , const char * lxcpath , lxc_attach_exec_t exec_function , void * exec_payload , lxc_attach_options_t * options , pid_t * attached_process ) { int ret , status ; pid_t init_pid , pid , attached_pid , expected ; struct lxc_proc_context_info * init_ctx ; char * cwd ; char * new_cwd ; int ipc_sockets [ 2 ] ; <S2SV_StartBug> signed long personality ; <S2SV_EndBug> if ( ! options ) options = & attach_static_default_options ; init_pid = lxc_cmd_get_init_pid ( name , lxcpath ) ; if ( init_pid < 0 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>the<S2SV_blank>init<S2SV_blank>pid\" ) ; return - 1 ; } init_ctx = lxc_proc_get_context_info ( init_pid ) ; if ( ! init_ctx ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>context<S2SV_blank>of<S2SV_blank>the<S2SV_blank>init<S2SV_blank>process,<S2SV_blank>pid<S2SV_blank>=<S2SV_blank>%ld\" , ( long ) init_pid ) ; return - 1 ; } personality = get_personality ( name , lxcpath ) ; if ( init_ctx -> personality < 0 ) { ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>personality<S2SV_blank>of<S2SV_blank>the<S2SV_blank>container\" ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } init_ctx -> personality = personality ; if ( ! fetch_seccomp ( name , lxcpath , init_ctx , options ) ) WARN ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>seccomp<S2SV_blank>policy\" ) ; cwd = getcwd ( NULL , 0 ) ; if ( options -> namespaces == - 1 ) { options -> namespaces = lxc_cmd_get_clone_flags ( name , lxcpath ) ; if ( options -> namespaces == - 1 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>automatically<S2SV_blank>determine<S2SV_blank>the<S2SV_blank>\" \"namespaces<S2SV_blank>which<S2SV_blank>the<S2SV_blank>container<S2SV_blank>unshared\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } } ret = socketpair ( PF_LOCAL , SOCK_STREAM | SOCK_CLOEXEC , 0 , ipc_sockets ) ; if ( ret < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>up<S2SV_blank>required<S2SV_blank>IPC<S2SV_blank>mechanism<S2SV_blank>for<S2SV_blank>attaching\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } pid = fork ( ) ; if ( pid < 0 ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>first<S2SV_blank>subprocess\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } if ( pid ) { pid_t to_cleanup_pid = pid ; close ( ipc_sockets [ 1 ] ) ; free ( cwd ) ; if ( options -> attach_flags & LXC_ATTACH_MOVE_TO_CGROUP ) { if ( ! cgroup_attach ( name , lxcpath , pid ) ) goto cleanup_error ; } status = 0 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" ) ; goto cleanup_error ; } ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & attached_pid , sizeof ( attached_pid ) , NULL ) ; if ( ret <= 0 ) { if ( ret != 0 ) ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>attached<S2SV_blank>process\" ) ; goto cleanup_error ; } if ( options -> stdin_fd == 0 ) { signal ( SIGINT , SIG_IGN ) ; signal ( SIGQUIT , SIG_IGN ) ; } ret = wait_for_pid ( pid ) ; if ( ret < 0 ) goto cleanup_error ; to_cleanup_pid = attached_pid ; status = 0 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" ) ; goto cleanup_error ; } expected = 1 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { if ( ret != 0 ) ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>(1)\" ) ; goto cleanup_error ; } status = 2 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(2)\" ) ; goto cleanup_error ; } shutdown ( ipc_sockets [ 0 ] , SHUT_RDWR ) ; close ( ipc_sockets [ 0 ] ) ; lxc_proc_put_context_info ( init_ctx ) ; * attached_process = attached_pid ; return 0 ; cleanup_error : shutdown ( ipc_sockets [ 0 ] , SHUT_RDWR ) ; close ( ipc_sockets [ 0 ] ) ; if ( to_cleanup_pid ) ( void ) wait_for_pid ( to_cleanup_pid ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } close ( ipc_sockets [ 0 ] ) ; expected = 0 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 1 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>communicating<S2SV_blank>with<S2SV_blank>child<S2SV_blank>process\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } <S2SV_StartBug> ret = lxc_attach_to_ns ( init_pid , options -> namespaces ) ; <S2SV_EndBug> if ( ret < 0 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>enter<S2SV_blank>the<S2SV_blank>namespace\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( options -> initial_cwd ) new_cwd = options -> initial_cwd ; else new_cwd = cwd ; ret = chdir ( new_cwd ) ; if ( ret < 0 ) WARN ( \"could<S2SV_blank>not<S2SV_blank>change<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>\\'%s\\'\" , new_cwd ) ; free ( cwd ) ; { struct attach_clone_payload payload = { . ipc_socket = ipc_sockets [ 1 ] , . options = options , . init_ctx = init_ctx , . exec_function = exec_function , <S2SV_StartBug> . exec_payload = exec_payload <S2SV_EndBug> } ; pid = lxc_clone ( attach_child_main , & payload , CLONE_PARENT ) ; } if ( pid <= 0 ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>subprocess\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } ret = lxc_write_nointr ( ipc_sockets [ 1 ] , & pid , sizeof ( pid ) ) ; if ( ret != sizeof ( pid ) ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>main<S2SV_blank>process<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>the<S2SV_blank>attached<S2SV_blank>process\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } rexit ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ] ; int procfd ; <S2SV_ModStart> ) ; } procfd = open ( \"/proc\" , O_DIRECTORY | O_RDONLY ) ; if ( procfd < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>/proc\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } <S2SV_ModStart> exec_payload = exec_payload , . procfd = procfd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void fdct4 ( const int16_t * input , int16_t * output ) { <S2SV_EndBug> <S2SV_StartBug> int16_t step [ 4 ] ; <S2SV_EndBug> <S2SV_StartBug> int temp1 , temp2 ; <S2SV_EndBug> step [ 0 ] = input [ 0 ] + input [ 3 ] ; step [ 1 ] = input [ 1 ] + input [ 2 ] ; step [ 2 ] = input [ 1 ] - input [ 2 ] ; step [ 3 ] = input [ 0 ] - input [ 3 ] ; temp1 = ( step [ 0 ] + step [ 1 ] ) * cospi_16_64 ; temp2 = ( step [ 0 ] - step [ 1 ] ) * cospi_16_64 ; <S2SV_StartBug> output [ 0 ] = fdct_round_shift ( temp1 ) ; <S2SV_EndBug> output [ 2 ] = fdct_round_shift ( temp2 ) ; temp1 = step [ 2 ] * cospi_24_64 + step [ 3 ] * cospi_8_64 ; temp2 = - step [ 2 ] * cospi_8_64 + step [ 3 ] * cospi_24_64 ; <S2SV_StartBug> output [ 1 ] = fdct_round_shift ( temp1 ) ; <S2SV_EndBug> output [ 3 ] = fdct_round_shift ( temp2 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fdct4 ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> * input , tran_low_t <S2SV_ModEnd> * output ) <S2SV_ModStart> output ) { tran_high_t <S2SV_ModEnd> step [ 4 <S2SV_ModStart> 4 ] ; tran_high_t <S2SV_ModEnd> temp1 , temp2 <S2SV_ModStart> 0 ] = ( tran_low_t ) fdct_round_shift ( temp1 ) ; output [ 2 ] = ( tran_low_t ) <S2SV_ModEnd> fdct_round_shift ( temp2 <S2SV_ModStart> 1 ] = ( tran_low_t ) fdct_round_shift ( temp1 ) ; output [ 3 ] = ( tran_low_t ) <S2SV_ModEnd> fdct_round_shift ( temp2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-119 GPLOT * gplotCreate ( const char * rootname , l_int32 outformat , const char * title , const char * xlabel , const char * ylabel ) { char * newroot ; <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> l_int32 badchar ; GPLOT * gplot ; PROCNAME ( \"gplotCreate\" ) ; if ( ! rootname ) return ( GPLOT * ) ERROR_PTR ( \"rootname<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( outformat != GPLOT_PNG && outformat != GPLOT_PS && outformat != GPLOT_EPS && outformat != GPLOT_LATEX ) return ( GPLOT * ) ERROR_PTR ( \"outformat<S2SV_blank>invalid\" , procName , NULL ) ; stringCheckForChars ( rootname , \"`;&|><\\\\\"?*\" , & badchar ) ; if ( badchar ) return ( GPLOT * ) ERROR_PTR ( \"invalid<S2SV_blank>rootname\" , procName , NULL ) ; if ( ( gplot = ( GPLOT * ) LEPT_CALLOC ( 1 , sizeof ( GPLOT ) ) ) == NULL ) return ( GPLOT * ) ERROR_PTR ( \"gplot<S2SV_blank>not<S2SV_blank>made\" , procName , NULL ) ; gplot -> cmddata = sarrayCreate ( 0 ) ; gplot -> datanames = sarrayCreate ( 0 ) ; gplot -> plotdata = sarrayCreate ( 0 ) ; gplot -> plottitles = sarrayCreate ( 0 ) ; gplot -> plotstyles = numaCreate ( 0 ) ; newroot = genPathname ( rootname , NULL ) ; gplot -> rootname = newroot ; gplot -> outformat = outformat ; <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.cmd\" , rootname ) ; <S2SV_EndBug> gplot -> cmdname = stringNew ( buf ) ; if ( outformat == GPLOT_PNG ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.png\" , newroot ) ; <S2SV_EndBug> else if ( outformat == GPLOT_PS ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.ps\" , newroot ) ; <S2SV_EndBug> else if ( outformat == GPLOT_EPS ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.eps\" , newroot ) ; <S2SV_EndBug> else if ( outformat == GPLOT_LATEX ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.tex\" , newroot ) ; <S2SV_EndBug> gplot -> outname = stringNew ( buf ) ; if ( title ) gplot -> title = stringNew ( title ) ; if ( xlabel ) gplot -> xlabel = stringNew ( xlabel ) ; if ( ylabel ) gplot -> ylabel = stringNew ( ylabel ) ; return gplot ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; l_int32 <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.cmd\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.png\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.ps\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.eps\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.tex\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13027\n\n```\nCWE-125 static int lldp_mgmt_addr_tlv_print ( netdissect_options * ndo , const u_char * pptr , u_int len ) { uint8_t mgmt_addr_len , intf_num_subtype , oid_len ; const u_char * tptr ; u_int tlen ; char * mgmt_addr ; tlen = len ; tptr = pptr ; if ( tlen < 1 ) { return 0 ; } mgmt_addr_len = * tptr ++ ; tlen -- ; if ( tlen < mgmt_addr_len ) { return 0 ; } mgmt_addr = lldp_network_addr_print ( ndo , tptr , mgmt_addr_len ) ; if ( mgmt_addr == NULL ) { return 0 ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>%s\" , mgmt_addr_len , mgmt_addr ) ) ; tptr += mgmt_addr_len ; tlen -= mgmt_addr_len ; if ( tlen < LLDP_INTF_NUM_LEN ) { return 0 ; } intf_num_subtype = * tptr ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Interface<S2SV_blank>Numbering<S2SV_blank>(%u):<S2SV_blank>%u\" , tok2str ( lldp_intf_numb_subtype_values , \"Unknown\" , intf_num_subtype ) , intf_num_subtype , EXTRACT_32BITS ( tptr + 1 ) ) ) ; tptr += LLDP_INTF_NUM_LEN ; tlen -= LLDP_INTF_NUM_LEN ; if ( tlen ) { oid_len = * tptr ; <S2SV_StartBug> if ( tlen < oid_len ) { <S2SV_EndBug> return 0 ; } if ( oid_len ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>OID<S2SV_blank>length<S2SV_blank>%u\" , oid_len ) ) ; safeputs ( ndo , tptr + 1 , oid_len ) ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( tlen < 1U +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6560\n\n```\nCWE-436 static void flatpak_proxy_client_init ( FlatpakProxyClient * client ) { init_side ( client , & client -> client_side ) ; init_side ( client , & client -> bus_side ) ; <S2SV_StartBug> client -> auth_end_offset = AUTH_END_INIT_OFFSET ; <S2SV_EndBug> client -> rewrite_reply = g_hash_table_new_full ( g_direct_hash , g_direct_equal , NULL , g_object_unref ) ; client -> get_owner_reply = g_hash_table_new_full ( g_direct_hash , g_direct_equal , NULL , g_free ) ; client -> unique_id_policy = g_hash_table_new_full ( g_str_hash , g_str_equal , g_free , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; client -> auth_buffer = g_byte_array_new ( ) <S2SV_ModEnd> ; client ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> int i ; fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><options><S2SV_blank>filename\\\\n\\\\n\" \"Options:\\\\n\" , exec_name ) ; arg_show_usage ( stderr , all_args ) ; # if CONFIG_VP8_DECODER fprintf ( stderr , \"\\\\nVP8<S2SV_blank>Postprocessing<S2SV_blank>Options:\\\\n\" ) ; arg_show_usage ( stderr , vp8_pp_args ) ; # endif fprintf ( stderr , \"\\\\nOutput<S2SV_blank>File<S2SV_blank>Patterns:\\\\n\\\\n\" \"<S2SV_blank><S2SV_blank>The<S2SV_blank>-o<S2SV_blank>argument<S2SV_blank>specifies<S2SV_blank>the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>the<S2SV_blank>file(s)<S2SV_blank>to<S2SV_blank>\" \"write<S2SV_blank>to.<S2SV_blank>If<S2SV_blank>the\\\\n<S2SV_blank><S2SV_blank>argument<S2SV_blank>does<S2SV_blank>not<S2SV_blank>include<S2SV_blank>any<S2SV_blank>escape<S2SV_blank>\" \"characters,<S2SV_blank>the<S2SV_blank>output<S2SV_blank>will<S2SV_blank>be\\\\n<S2SV_blank><S2SV_blank>written<S2SV_blank>to<S2SV_blank>a<S2SV_blank>single<S2SV_blank>file.<S2SV_blank>\" \"Otherwise,<S2SV_blank>the<S2SV_blank>filename<S2SV_blank>will<S2SV_blank>be<S2SV_blank>calculated<S2SV_blank>by\\\\n<S2SV_blank><S2SV_blank>expanding<S2SV_blank>\" \"the<S2SV_blank>following<S2SV_blank>escape<S2SV_blank>characters:\\\\n\" ) ; fprintf ( stderr , \"\\\\n\\\\t%%w<S2SV_blank><S2SV_blank><S2SV_blank>-<S2SV_blank>Frame<S2SV_blank>width\" \"\\\\n\\\\t%%h<S2SV_blank><S2SV_blank><S2SV_blank>-<S2SV_blank>Frame<S2SV_blank>height\" \"\\\\n\\\\t%%<n><S2SV_blank>-<S2SV_blank>Frame<S2SV_blank>number,<S2SV_blank>zero<S2SV_blank>padded<S2SV_blank>to<S2SV_blank><n><S2SV_blank>places<S2SV_blank>(1..9)\" \"\\\\n\\\\n<S2SV_blank><S2SV_blank>Pattern<S2SV_blank>arguments<S2SV_blank>are<S2SV_blank>only<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>conjunction<S2SV_blank>\" \"with<S2SV_blank>the<S2SV_blank>--yv12<S2SV_blank>and\\\\n<S2SV_blank><S2SV_blank>--i420<S2SV_blank>options.<S2SV_blank>If<S2SV_blank>the<S2SV_blank>-o<S2SV_blank>option<S2SV_blank>is<S2SV_blank>\" \"not<S2SV_blank>specified,<S2SV_blank>the<S2SV_blank>output<S2SV_blank>will<S2SV_blank>be\\\\n<S2SV_blank><S2SV_blank>directed<S2SV_blank>to<S2SV_blank>stdout.\\\\n\" ) ; fprintf ( stderr , \"\\\\nIncluded<S2SV_blank>decoders:\\\\n\\\\n\" ) ; for ( i = 0 ; i < get_vpx_decoder_count ( ) ; ++ i ) { const VpxInterface * const decoder = get_vpx_decoder_by_index ( i ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%-6s<S2SV_blank>-<S2SV_blank>%s\\\\n\" , <S2SV_StartBug> decoder -> name , vpx_codec_iface_name ( decoder -> interface ( ) ) ) ; <S2SV_EndBug> } exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void <S2SV_ModStart> ( decoder -> codec_interface <S2SV_ModEnd> ( ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0551\n\n```\nCWE-000 WORD32 ih264d_parse_decode_slice ( UWORD8 u1_is_idr_slice , UWORD8 u1_nal_ref_idc , dec_struct_t * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; dec_pic_params_t * ps_pps ; dec_seq_params_t * ps_seq ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; pocstruct_t s_tmp_poc ; WORD32 i_delta_poc [ 2 ] ; WORD32 i4_poc = 0 ; UWORD16 u2_first_mb_in_slice , u2_frame_num ; UWORD8 u1_field_pic_flag , u1_redundant_pic_cnt = 0 , u1_slice_type ; UWORD32 u4_idr_pic_id = 0 ; UWORD8 u1_bottom_field_flag , u1_pic_order_cnt_type ; UWORD8 u1_nal_unit_type ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; WORD8 i1_is_end_of_poc ; WORD32 ret , end_of_frame ; WORD32 prev_slice_err , num_mb_skipped ; UWORD8 u1_mbaff ; pocstruct_t * ps_cur_poc ; UWORD32 u4_temp ; WORD32 i_temp ; UWORD32 u4_call_end_of_pic = 0 ; ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read_slc = 0 ; u2_first_mb_in_slice = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u2_first_mb_in_slice > ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) ) { return ERROR_CORRUPTED_SLICE ; } if ( ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) <= ps_dec -> u2_cur_mb_addr ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { return ERROR_CORRUPTED_SLICE ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>first_mb_in_slice\" , u2_first_mb_in_slice ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > 9 ) return ERROR_INV_SLC_TYPE_T ; u1_slice_type = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_type\" , ( u1_slice_type ) ) ; ps_dec -> u1_sl_typ_5_9 = 0 ; if ( u1_slice_type > 4 ) { u1_slice_type -= 5 ; ps_dec -> u1_sl_typ_5_9 = 1 ; } { UWORD32 skip ; if ( ( ps_dec -> i4_app_skip_mode == IVD_SKIP_PB ) || ( ps_dec -> i4_dec_skip_mode == IVD_SKIP_PB ) ) { UWORD32 u4_bit_stream_offset = 0 ; if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else if ( ( I_SLICE == u1_slice_type ) && ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else { skip = 1 ; } if ( ( 0 == u2_first_mb_in_slice ) && ( 1 == ps_dec -> u4_prev_nal_skipped ) ) { skip = 0 ; } if ( skip ) { ps_dec -> u4_prev_nal_skipped = 1 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_PB ; return 0 ; } else { if ( 1 == ps_dec -> u4_prev_nal_skipped ) { ps_dec -> u4_return_to_app = 1 ; return 0 ; } } } } u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp & MASK_ERR_PIC_SET_ID ) return ERROR_INV_SLICE_HDR_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_parameter_set_id\" , u4_temp ) ; ps_pps = & ps_dec -> ps_pps [ u4_temp ] ; if ( FALSE == ps_pps -> u1_is_valid ) { return ERROR_INV_SLICE_HDR_T ; } ps_seq = ps_pps -> ps_sps ; if ( ! ps_seq ) return ERROR_INV_SLICE_HDR_T ; if ( FALSE == ps_seq -> u1_is_valid ) return ERROR_INV_SLICE_HDR_T ; u2_frame_num = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_bits_in_frm_num ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>frame_num\" , u2_frame_num ) ; <S2SV_StartBug> if ( ! ps_seq -> u1_frame_mbs_only_flag ) <S2SV_EndBug> { u1_field_pic_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>field_pic_flag\" , u1_field_pic_flag ) ; u1_bottom_field_flag = 0 ; if ( u1_field_pic_flag ) { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan_fld ; u1_bottom_field_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>bottom_field_flag\" , u1_bottom_field_flag ) ; } else { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } } else { u1_field_pic_flag = 0 ; u1_bottom_field_flag = 0 ; ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } u1_nal_unit_type = SLICE_NAL ; if ( u1_is_idr_slice ) { if ( 0 == u1_field_pic_flag ) { ps_dec -> u1_top_bottom_decoded = TOP_FIELD_ONLY | BOT_FIELD_ONLY ; } u1_nal_unit_type = IDR_SLICE_NAL ; u4_idr_pic_id = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_idr_pic_id > 65535 ) return ERROR_INV_SLICE_HDR_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank><S2SV_blank>\" , u4_idr_pic_id ) ; } i_delta_poc [ 0 ] = i_delta_poc [ 1 ] = 0 ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; u1_pic_order_cnt_type = ps_seq -> u1_pic_order_cnt_type ; if ( u1_pic_order_cnt_type == 0 ) { i_temp = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_log2_max_pic_order_cnt_lsb_minus ) ; if ( i_temp < 0 || i_temp >= ps_seq -> i4_max_pic_order_cntLsb ) return ERROR_INV_SLICE_HDR_T ; s_tmp_poc . i4_pic_order_cnt_lsb = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_order_cnt_lsb\" , s_tmp_poc . i4_pic_order_cnt_lsb ) ; if ( ( ps_pps -> u1_pic_order_present_flag == 1 ) && ( ! u1_field_pic_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt_bottom = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt_bottom\" , s_tmp_poc . i4_delta_pic_order_cnt_bottom ) ; } } s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = 0 ; if ( u1_pic_order_cnt_type == 1 && ( ! ps_seq -> u1_delta_pic_order_always_zero_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[0]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] ) ; if ( ps_pps -> u1_pic_order_present_flag && ! u1_field_pic_flag ) { s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[1]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] ) ; } } if ( ps_pps -> u1_redundant_pic_cnt_present_flag ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_REDUNDANT_PIC_CNT ) return ERROR_INV_SLICE_HDR_T ; u1_redundant_pic_cnt = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>redundant_pic_cnt\" , u1_redundant_pic_cnt ) ; } i1_is_end_of_poc = 1 ; ps_dec -> ps_dec_err_status -> u1_err_flag &= MASK_REJECT_CUR_PIC ; if ( ps_dec -> u4_first_slice_in_pic != 2 ) { i1_is_end_of_poc = ih264d_is_end_of_pic ( u2_frame_num , u1_nal_ref_idc , & s_tmp_poc , & ps_dec -> s_cur_pic_poc , ps_cur_slice , u1_pic_order_cnt_type , u1_nal_unit_type , u4_idr_pic_id , u1_field_pic_flag , u1_bottom_field_flag ) ; <S2SV_StartBug> } <S2SV_EndBug> u1_mbaff = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; prev_slice_err = 0 ; if ( i1_is_end_of_poc || ps_dec -> u1_first_slice_in_stream ) { if ( u2_frame_num != ps_dec -> u2_prv_frame_num && ps_dec -> u1_top_bottom_decoded != 0 && ps_dec -> u1_top_bottom_decoded != ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) ) { ps_dec -> u1_dangling_field = 1 ; if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; } else { prev_slice_err = 2 ; } if ( ps_dec -> u1_top_bottom_decoded == TOP_FIELD_ONLY ) ps_cur_slice -> u1_bottom_field_flag = 1 ; else ps_cur_slice -> u1_bottom_field_flag = 0 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & ps_dec -> s_cur_pic_poc ; u1_is_idr_slice = ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ; } else if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice > 0 ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; ps_cur_poc = & s_tmp_poc ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; ps_cur_slice -> u1_mbaff_frame_flag = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; } } else { if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; } else { prev_slice_err = 2 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; } ps_cur_poc = & s_tmp_poc ; } } else { if ( ( u2_first_mb_in_slice << u1_mbaff ) > ps_dec -> u2_total_mbs_coded ) { prev_slice_err = 2 ; num_mb_skipped = ( u2_first_mb_in_slice << u1_mbaff ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } else if ( ( u2_first_mb_in_slice << u1_mbaff ) < ps_dec -> u2_total_mbs_coded ) { return ERROR_CORRUPTED_SLICE ; } } if ( prev_slice_err ) { ret = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , u1_is_idr_slice , u2_frame_num , ps_cur_poc , prev_slice_err ) ; if ( ps_dec -> u1_dangling_field == 1 ) { ps_dec -> u1_second_field = 1 - ps_dec -> u1_second_field ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_dec -> u2_prv_frame_num = u2_frame_num ; ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_DANGLING_FIELD_IN_PIC ; } if ( prev_slice_err == 2 ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_IN_LAST_SLICE_OF_PIC ; } if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } if ( ret != OK ) return ret ; i1_is_end_of_poc = 0 ; } if ( ps_dec -> u4_first_slice_in_pic == 0 ) { ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } if ( ( ps_dec -> u1_separate_parse == 0 ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { ps_dec -> ps_decode_cur_slice ++ ; } ps_dec -> u1_slice_header_done = 0 ; <S2SV_StartBug> if ( ! ps_dec -> u1_first_slice_in_stream ) <S2SV_EndBug> { UWORD8 uc_mbs_exceed = 0 ; if ( ps_dec -> u2_total_mbs_coded == ( ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ) ) { if ( ps_dec -> u4_first_slice_in_pic == 0 ) uc_mbs_exceed = 1 ; } if ( i1_is_end_of_poc || uc_mbs_exceed ) { if ( 1 == ps_dec -> u1_last_pic_not_decoded ) { ret = ih264d_end_of_pic_dispbuf_mgr ( ps_dec ) ; if ( ret != OK ) return ret ; ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; # if WIN32 H264_DEC_DEBUG_PRINT ( \"<S2SV_blank>------<S2SV_blank>PIC<S2SV_blank>SKIPPED<S2SV_blank>------\\\\n\" ) ; # endif return RET_LAST_SKIP ; } else { ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; } } } if ( u1_field_pic_flag ) { ps_dec -> u2_prv_frame_num = u2_frame_num ; } if ( ps_cur_slice -> u1_mmco_equalto5 ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; if ( ! ps_cur_slice -> u1_field_pic_flag ) { i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; } else if ( ! ps_cur_slice -> u1_bottom_field_flag ) i4_temp_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; else i4_temp_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_poc = i4_temp_poc ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { ret = ih264d_decode_pic_order_cnt ( u1_is_idr_slice , u2_frame_num , & ps_dec -> s_prev_pic_poc , & s_tmp_poc , ps_cur_slice , ps_pps , u1_nal_ref_idc , u1_bottom_field_flag , u1_field_pic_flag , & i4_poc ) ; if ( ret != OK ) return ret ; if ( i4_poc >= ps_dec -> i4_max_poc ) ps_dec -> i4_max_poc = i4_poc ; if ( i4_poc == 0 ) { ps_dec -> i4_prev_max_display_seq = ps_dec -> i4_prev_max_display_seq + ps_dec -> i4_max_poc + ps_dec -> u1_max_dec_frame_buffering + 1 ; ps_dec -> i4_max_poc = 0 ; } } ps_cur_slice -> i4_delta_pic_order_cnt [ 0 ] = i_delta_poc [ 0 ] ; ps_cur_slice -> i4_delta_pic_order_cnt [ 1 ] = i_delta_poc [ 1 ] ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u2_first_mb_in_slice = u2_first_mb_in_slice ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> u1_slice_type = u1_slice_type ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; if ( ps_seq -> u1_frame_mbs_only_flag ) ps_cur_slice -> u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; else ps_cur_slice -> u1_direct_8x8_inference_flag = 1 ; if ( u1_slice_type == B_SLICE ) { ps_cur_slice -> u1_direct_spatial_mv_pred_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>direct_spatial_mv_pred_flag\" , ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ; if ( ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ps_cur_slice -> pf_decodeDirect = ih264d_decode_spatial_direct ; else ps_cur_slice -> pf_decodeDirect = ih264d_decode_temporal_direct ; if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaffB ; } else { if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice == 0 ) { ret = ih264d_start_of_pic ( ps_dec , i4_poc , & s_tmp_poc , u2_frame_num , ps_pps ) ; if ( ret != OK ) return ret ; } ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } { UWORD8 uc_nofield_nombaff ; uc_nofield_nombaff = ( ( ps_dec -> ps_cur_slice -> u1_field_pic_flag == 0 ) && ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag == 0 ) && ( u1_slice_type != B_SLICE ) && ( ps_dec -> ps_cur_pps -> u1_wted_pred_flag == 0 ) ) ; if ( uc_nofield_nombaff ) { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; } else { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_mp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_mp ; } } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u4_frm_sei_sync == u2_frame_num ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; ps_err -> u4_frm_sei_sync = SYNC_FRM_DEFAULT ; } ps_err -> u4_cur_frm = u2_frame_num ; } { WORD32 i4_skip_b_pic , i4_skip_p_pic ; i4_skip_b_pic = ( ps_dec -> u4_skip_frm_mask & B_SLC_BIT ) && ( B_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; i4_skip_p_pic = ( ps_dec -> u4_skip_frm_mask & P_SLC_BIT ) && ( P_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; if ( i4_skip_b_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } if ( i4_skip_p_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } } { UWORD16 u2_mb_x , u2_mb_y ; ps_dec -> i4_submb_ofst = ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) * SUB_BLK_SIZE ) - SUB_BLK_SIZE ; if ( u2_first_mb_in_slice ) { UWORD8 u1_mb_aff ; UWORD8 u1_field_pic ; UWORD16 u2_frm_wd_in_mbs ; u2_frm_wd_in_mbs = ps_seq -> u2_frm_wd_in_mbs ; u1_mb_aff = ps_cur_slice -> u1_mbaff_frame_flag ; u1_field_pic = ps_cur_slice -> u1_field_pic_flag ; { UWORD32 x_offset ; UWORD32 y_offset ; UWORD32 u4_frame_stride ; tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = MOD ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y = DIV ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y <<= u1_mb_aff ; if ( ( u2_mb_x > u2_frm_wd_in_mbs - 1 ) || ( u2_mb_y > ps_dec -> u2_frm_ht_in_mbs - 1 ) ) { return ERROR_CORRUPTED_SLICE ; } u4_frame_stride = ps_dec -> u2_frm_wd_y << u1_field_pic ; x_offset = u2_mb_x << 4 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 4 ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 + x_offset + y_offset ; u4_frame_stride = ps_dec -> u2_frm_wd_uv << u1_field_pic ; x_offset >>= 1 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 3 ; x_offset *= YUV420SP_FACTOR ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 + x_offset + y_offset ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 + x_offset + y_offset ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; if ( ps_dec -> u1_separate_parse == 1 ) { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } else { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } ps_dec -> u2_cur_mb_addr = ( u2_first_mb_in_slice << u1_mb_aff ) ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv + ( ( u2_first_mb_in_slice << u1_mb_aff ) << 4 ) ; } } else { tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = 0xffff ; u2_mb_y = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; } ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= ps_cur_slice -> u1_mbaff_frame_flag ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; } ps_bitstrm -> u4_max_ofst += ps_dec -> ps_cur_pps -> u1_entropy_coding_mode ; ps_dec -> u1_B = ( u1_slice_type == B_SLICE ) ; ps_dec -> u4_next_mb_skip = 0 ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> ps_cur_slice -> u2_first_mb_in_slice ; ps_dec -> ps_parse_cur_slice -> slice_type = ps_dec -> ps_cur_slice -> u1_slice_type ; ps_dec -> u4_start_recon_deblk = 1 ; { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( void * ) pu1_buf ; } if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } if ( u1_slice_type == I_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= I_SLC_BIT ; ret = ih264d_parse_islice ( ps_dec , u2_first_mb_in_slice ) ; if ( ps_dec -> i4_pic_type != B_SLICE && ps_dec -> i4_pic_type != P_SLICE ) ps_dec -> i4_pic_type = I_SLICE ; } else if ( u1_slice_type == P_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ret = ih264d_parse_pslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; if ( ps_dec -> i4_pic_type != B_SLICE ) ps_dec -> i4_pic_type = P_SLICE ; } else if ( u1_slice_type == B_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ret = ih264d_parse_bslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; ps_dec -> i4_pic_type = B_SLICE ; } else return ERROR_INV_SLC_TYPE_T ; if ( ps_dec -> u1_slice_header_done ) { ps_dec -> u4_first_slice_in_pic = 0 ; ps_dec -> u1_first_slice_in_stream = 0 ; } if ( ret != OK ) return ret ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ( ps_seq -> u2_max_mb_addr + 1 ) ) { ps_dec -> u1_pic_decode_done = 1 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ( ps_err -> u1_err_flag & REJECT_PB_PICS ) && ( ps_err -> u1_cur_pic_type == PIC_TYPE_I ) ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } PRINT_BIN_BIT_RATIO ( ps_dec ) return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! ps_dec -> u1_first_slice_in_stream && ( ps_dec -> u4_first_slice_in_pic == 2 ) ) { pocstruct_t * ps_prev_poc = & ps_dec -> s_prev_pic_poc ; pocstruct_t * ps_cur_poc = & ps_dec -> s_cur_pic_poc ; ps_dec -> u2_mbx = 0xffff ; ps_dec -> u2_mby = 0 ; if ( ( 0 == u1_is_idr_slice ) && ps_cur_slice -> u1_nal_ref_idc ) ps_dec -> u2_prev_ref_frame_num = ps_cur_slice -> u2_frame_num ; if ( u1_is_idr_slice || ps_cur_slice -> u1_mmco_equalto5 ) ps_dec -> u2_prev_ref_frame_num = 0 ; if ( ps_dec -> ps_cur_sps -> u1_gaps_in_frame_num_value_allowed_flag ) { ih264d_decode_gaps_in_frame_num ( ps_dec , u2_frame_num ) ; } ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst ; ps_prev_poc -> u2_frame_num = ps_cur_poc -> u2_frame_num ; ps_prev_poc -> u1_mmco_equalto5 = ps_cur_slice -> u1_mmco_equalto5 ; if ( ps_cur_slice -> u1_nal_ref_idc ) { ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] ; ps_prev_poc -> u1_bot_field = ps_cur_poc -> u1_bot_field ; } ps_dec -> u2_total_mbs_coded = 0 ; } if ( ! <S2SV_ModStart> u1_bottom_field_flag ) ; if ( i1_is_end_of_poc ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } <S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( u1_field_pic_flag\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int skt_read ( int fd , void * p , size_t len ) { int read ; struct pollfd pfd ; struct timespec ts ; FNLOG ( ) ; ts_log ( \"skt_read<S2SV_blank>recv\" , len , NULL ) ; <S2SV_StartBug> if ( ( read = recv ( fd , p , len , MSG_NOSIGNAL ) ) == - 1 ) <S2SV_EndBug> { ERROR ( \"write<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>errno=%d\\\\n\" , errno ) ; return - 1 ; } return read ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( read = TEMP_FAILURE_RETRY ( <S2SV_ModStart> len , MSG_NOSIGNAL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_remove_compressor ( VP8_COMP * * ptr ) { VP8_COMP * cpi = * ptr ; if ( ! cpi ) return ; if ( cpi && ( cpi -> common . current_video_frame > 0 ) ) { # if ! ( CONFIG_REALTIME_ONLY ) if ( cpi -> pass == 2 ) { vp8_end_second_pass ( cpi ) ; } # endif # ifdef VP8_ENTROPY_STATS print_context_counters ( ) ; print_tree_update_probs ( ) ; print_mode_context ( ) ; # endif # if CONFIG_INTERNAL_STATS if ( cpi -> pass != 1 ) { FILE * f = fopen ( \"opsnr.stt\" , \"a\" ) ; double time_encoded = ( cpi -> last_end_time_stamp_seen - cpi -> first_time_stamp_ever ) / 10000000.000 ; double total_encode_time = ( cpi -> time_receive_data + cpi -> time_compress_data ) / 1000.000 ; double dr = ( double ) cpi -> bytes * 8.0 / 1000.0 / time_encoded ; if ( cpi -> b_calculate_psnr ) { <S2SV_StartBug> YV12_BUFFER_CONFIG * lst_yv12 = <S2SV_EndBug> & cpi -> common . yv12_fb [ cpi -> common . lst_fb_idx ] ; if ( cpi -> oxcf . number_of_layers > 1 ) { int i ; fprintf ( f , \"Layer\\\\tBitrate\\\\tAVGPsnr\\\\tGLBPsnr\\\\tAVPsnrP\\\\t\" \"GLPsnrP\\\\tVPXSSIM\\\\t\\\\n\" ) ; for ( i = 0 ; i < ( int ) cpi -> oxcf . number_of_layers ; i ++ ) { double dr = ( double ) cpi -> bytes_in_layer [ i ] * 8.0 / 1000.0 / time_encoded ; double samples = 3.0 / 2 * cpi -> frames_in_layer [ i ] * <S2SV_StartBug> lst_yv12 -> y_width * lst_yv12 -> y_height ; <S2SV_EndBug> double total_psnr = vpx_sse_to_psnr ( samples , 255.0 , cpi -> total_error2 [ i ] ) ; double total_psnr2 = vpx_sse_to_psnr ( samples , 255.0 , cpi -> total_error2_p [ i ] ) ; double total_ssim = 100 * pow ( cpi -> sum_ssim [ i ] / cpi -> sum_weights [ i ] , 8.0 ) ; fprintf ( f , \"%5d\\\\t%7.3f\\\\t%7.3f\\\\t%7.3f\\\\t%7.3f\\\\t\" \"%7.3f\\\\t%7.3f\\\\n\" , i , dr , cpi -> sum_psnr [ i ] / cpi -> frames_in_layer [ i ] , total_psnr , cpi -> sum_psnr_p [ i ] / cpi -> frames_in_layer [ i ] , total_psnr2 , total_ssim ) ; } } else { double samples = 3.0 / 2 * cpi -> count * <S2SV_StartBug> lst_yv12 -> y_width * lst_yv12 -> y_height ; <S2SV_EndBug> double total_psnr = vpx_sse_to_psnr ( samples , 255.0 , cpi -> total_sq_error ) ; double total_psnr2 = vpx_sse_to_psnr ( samples , 255.0 , cpi -> total_sq_error2 ) ; double total_ssim = 100 * pow ( cpi -> summed_quality / cpi -> summed_weights , 8.0 ) ; fprintf ( f , \"Bitrate\\\\tAVGPsnr\\\\tGLBPsnr\\\\tAVPsnrP\\\\t\" \"GLPsnrP\\\\tVPXSSIM\\\\t<S2SV_blank><S2SV_blank>Time(us)\\\\n\" ) ; fprintf ( f , \"%7.3f\\\\t%7.3f\\\\t%7.3f\\\\t%7.3f\\\\t%7.3f\\\\t\" \"%7.3f\\\\t%8.0f\\\\n\" , dr , cpi -> total / cpi -> count , total_psnr , cpi -> totalp / cpi -> count , total_psnr2 , total_ssim , total_encode_time ) ; } } if ( cpi -> b_calculate_ssimg ) { if ( cpi -> oxcf . number_of_layers > 1 ) { int i ; fprintf ( f , \"Layer\\\\tBitRate\\\\tSSIM_Y\\\\tSSIM_U\\\\tSSIM_V\\\\tSSIM_A\\\\t\" \"Time(us)\\\\n\" ) ; for ( i = 0 ; i < ( int ) cpi -> oxcf . number_of_layers ; i ++ ) { double dr = ( double ) cpi -> bytes_in_layer [ i ] * 8.0 / 1000.0 / time_encoded ; fprintf ( f , \"%5d\\\\t%7.3f\\\\t%6.4f\\\\t\" \"%6.4f\\\\t%6.4f\\\\t%6.4f\\\\t%8.0f\\\\n\" , i , dr , cpi -> total_ssimg_y_in_layer [ i ] / cpi -> frames_in_layer [ i ] , cpi -> total_ssimg_u_in_layer [ i ] / cpi -> frames_in_layer [ i ] , cpi -> total_ssimg_v_in_layer [ i ] / cpi -> frames_in_layer [ i ] , cpi -> total_ssimg_all_in_layer [ i ] / cpi -> frames_in_layer [ i ] , total_encode_time ) ; } } else { fprintf ( f , \"BitRate\\\\tSSIM_Y\\\\tSSIM_U\\\\tSSIM_V\\\\tSSIM_A\\\\t\" \"Time(us)\\\\n\" ) ; fprintf ( f , \"%7.3f\\\\t%6.4f\\\\t%6.4f\\\\t%6.4f\\\\t%6.4f\\\\t%8.0f\\\\n\" , dr , cpi -> total_ssimg_y / cpi -> count , cpi -> total_ssimg_u / cpi -> count , cpi -> total_ssimg_v / cpi -> count , cpi -> total_ssimg_all / cpi -> count , total_encode_time ) ; } } fclose ( f ) ; # if 0 f = fopen ( \"qskip.stt\" , \"a\" ) ; fprintf ( f , \"minq:%d<S2SV_blank>-maxq:%d<S2SV_blank>skiptrue:skipfalse<S2SV_blank>=<S2SV_blank>%d:%d\\\\n\" , cpi -> oxcf . best_allowed_q , cpi -> oxcf . worst_allowed_q , skiptruecount , skipfalsecount ) ; fclose ( f ) ; # endif } # endif # ifdef SPEEDSTATS if ( cpi -> compressor_speed == 2 ) { int i ; FILE * f = fopen ( \"cxspeed.stt\" , \"a\" ) ; cnt_pm /= cpi -> common . MBs ; for ( i = 0 ; i < 16 ; i ++ ) fprintf ( f , \"%5d\" , frames_at_speed [ i ] ) ; fprintf ( f , \"\\\\n\" ) ; fclose ( f ) ; } # endif # ifdef MODE_STATS { extern int count_mb_seg [ 4 ] ; FILE * f = fopen ( \"modes.stt\" , \"a\" ) ; double dr = ( double ) cpi -> framerate * ( double ) bytes * ( double ) 8 / ( double ) count / ( double ) 1000 ; fprintf ( f , \"intra_mode<S2SV_blank>in<S2SV_blank>Intra<S2SV_blank>Frames:\\\\n\" ) ; fprintf ( f , \"Y:<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d\\\\n\" , y_modes [ 0 ] , y_modes [ 1 ] , y_modes [ 2 ] , y_modes [ 3 ] , y_modes [ 4 ] ) ; fprintf ( f , \"UV:%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d\\\\n\" , uv_modes [ 0 ] , uv_modes [ 1 ] , uv_modes [ 2 ] , uv_modes [ 3 ] ) ; fprintf ( f , \"B:<S2SV_blank>\" ) ; { int i ; for ( i = 0 ; i < 10 ; i ++ ) fprintf ( f , \"%8d,<S2SV_blank>\" , b_modes [ i ] ) ; fprintf ( f , \"\\\\n\" ) ; } fprintf ( f , \"Modes<S2SV_blank>in<S2SV_blank>Inter<S2SV_blank>Frames:\\\\n\" ) ; fprintf ( f , \"Y:<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d\\\\n\" , inter_y_modes [ 0 ] , inter_y_modes [ 1 ] , inter_y_modes [ 2 ] , inter_y_modes [ 3 ] , inter_y_modes [ 4 ] , inter_y_modes [ 5 ] , inter_y_modes [ 6 ] , inter_y_modes [ 7 ] , inter_y_modes [ 8 ] , inter_y_modes [ 9 ] ) ; fprintf ( f , \"UV:%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d\\\\n\" , inter_uv_modes [ 0 ] , inter_uv_modes [ 1 ] , inter_uv_modes [ 2 ] , inter_uv_modes [ 3 ] ) ; fprintf ( f , \"B:<S2SV_blank>\" ) ; { int i ; for ( i = 0 ; i < 15 ; i ++ ) fprintf ( f , \"%8d,<S2SV_blank>\" , inter_b_modes [ i ] ) ; fprintf ( f , \"\\\\n\" ) ; } fprintf ( f , \"P:%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d\\\\n\" , count_mb_seg [ 0 ] , count_mb_seg [ 1 ] , count_mb_seg [ 2 ] , count_mb_seg [ 3 ] ) ; fprintf ( f , \"PB:%8d,<S2SV_blank>%8d,<S2SV_blank>%8d,<S2SV_blank>%8d\\\\n\" , inter_b_modes [ LEFT4X4 ] , inter_b_modes [ ABOVE4X4 ] , inter_b_modes [ ZERO4X4 ] , inter_b_modes [ NEW4X4 ] ) ; fclose ( f ) ; } # endif # ifdef VP8_ENTROPY_STATS { int i , j , k ; FILE * fmode = fopen ( \"modecontext.c\" , \"w\" ) ; fprintf ( fmode , \"\\\\n#include<S2SV_blank>\\\\\"entropymode.h\\\\\"\\\\n\\\\n\" ) ; fprintf ( fmode , \"const<S2SV_blank>unsigned<S2SV_blank>int<S2SV_blank>vp8_kf_default_bmode_counts<S2SV_blank>\" ) ; fprintf ( fmode , \"[VP8_BINTRAMODES]<S2SV_blank>[VP8_BINTRAMODES]<S2SV_blank>[VP8_BINTRAMODES]<S2SV_blank>=\\\\n{\\\\n\" ) ; for ( i = 0 ; i < 10 ; i ++ ) { fprintf ( fmode , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>{<S2SV_blank>/*<S2SV_blank>Above<S2SV_blank>Mode<S2SV_blank>:<S2SV_blank><S2SV_blank>%d<S2SV_blank>*/\\\\n\" , i ) ; for ( j = 0 ; j < 10 ; j ++ ) { fprintf ( fmode , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>{\" ) ; for ( k = 0 ; k < 10 ; k ++ ) { if ( ! intra_mode_stats [ i ] [ j ] [ k ] ) fprintf ( fmode , \"<S2SV_blank>%5d,<S2SV_blank>\" , 1 ) ; else fprintf ( fmode , \"<S2SV_blank>%5d,<S2SV_blank>\" , intra_mode_stats [ i ] [ j ] [ k ] ) ; } fprintf ( fmode , \"},<S2SV_blank>/*<S2SV_blank>left_mode<S2SV_blank>%d<S2SV_blank>*/\\\\n\" , j ) ; } fprintf ( fmode , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>},\\\\n\" ) ; } fprintf ( fmode , \"};\\\\n\" ) ; fclose ( fmode ) ; } # endif # if defined ( SECTIONBITS_OUTPUT ) if ( 0 ) { int i ; FILE * f = fopen ( \"tokenbits.stt\" , \"a\" ) ; for ( i = 0 ; i < 28 ; i ++ ) fprintf ( f , \"%8d\" , ( int ) ( Sectionbits [ i ] / 256 ) ) ; fprintf ( f , \"\\\\n\" ) ; fclose ( f ) ; } # endif # if 0 { printf ( \"\\\\n_pick_loop_filter_level:%d\\\\n\" , cpi -> time_pick_lpf / 1000 ) ; printf ( \"\\\\n_frames<S2SV_blank>recive_data<S2SV_blank>encod_mb_row<S2SV_blank>compress_frame<S2SV_blank><S2SV_blank>Total\\\\n\" ) ; printf ( \"%6d<S2SV_blank>%10ld<S2SV_blank>%10ld<S2SV_blank>%10ld<S2SV_blank>%10ld\\\\n\" , cpi -> common . current_video_frame , cpi -> time_receive_data / 1000 , cpi -> time_encode_mb_row / 1000 , cpi -> time_compress_data / 1000 , ( cpi -> time_receive_data + cpi -> time_compress_data ) / 1000 ) ; } # endif } # if CONFIG_MULTITHREAD vp8cx_remove_encoder_threads ( cpi ) ; # endif # if CONFIG_TEMPORAL_DENOISING vp8_denoiser_free ( & cpi -> denoiser ) ; # endif dealloc_compressor_data ( cpi ) ; vpx_free ( cpi -> mb . ss ) ; vpx_free ( cpi -> tok ) ; vpx_free ( cpi -> cyclic_refresh_map ) ; <S2SV_StartBug> vp8_remove_common ( & cpi -> common ) ; <S2SV_EndBug> vpx_free ( cpi ) ; * ptr = 0 ; # ifdef OUTPUT_YUV_SRC fclose ( yuv_file ) ; # endif <S2SV_StartBug> # if 0 <S2SV_EndBug> if ( keyfile ) fclose ( keyfile ) ; if ( framepsnr ) fclose ( framepsnr ) ; if ( kf_list ) fclose ( kf_list ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> b_calculate_psnr ) { <S2SV_ModEnd> if ( cpi <S2SV_ModStart> i ] * cpi -> common . Width * cpi -> common . Height <S2SV_ModEnd> ; double total_psnr <S2SV_ModStart> -> count * cpi -> common . Width * cpi -> common . Height <S2SV_ModEnd> ; double total_psnr <S2SV_ModStart> cyclic_refresh_map ) ; vpx_free ( cpi -> consec_zero_last ) ; vpx_free ( cpi -> consec_zero_last_mvbias ) ; <S2SV_ModStart> # endif # ifdef OUTPUT_YUV_DENOISED fclose ( yuv_denoised_file ) ; # endif #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void init_decoder ( vpx_codec_alg_priv_t * ctx ) { <S2SV_EndBug> <S2SV_StartBug> VP9D_CONFIG oxcf ; <S2SV_EndBug> oxcf . width = ctx -> si . w ; oxcf . height = ctx -> si . h ; oxcf . version = 9 ; <S2SV_StartBug> oxcf . max_threads = ctx -> cfg . threads ; <S2SV_EndBug> oxcf . inv_tile_order = ctx -> invert_tile_order ; <S2SV_StartBug> ctx -> pbi = vp9_decoder_create ( & oxcf ) ; <S2SV_EndBug> if ( ctx -> pbi == NULL ) <S2SV_StartBug> return ; <S2SV_EndBug> vp9_initialize_dec ( ) ; if ( ! ctx -> postproc_cfg_set && ( ctx -> base . init_flags & VPX_CODEC_USE_POSTPROC ) ) set_default_ppflags ( & ctx -> postproc_cfg ) ; init_buffer_callbacks ( ctx ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static vpx_codec_err_t <S2SV_ModEnd> init_decoder ( vpx_codec_alg_priv_t <S2SV_ModStart> ctx ) { int i ; const VPxWorkerInterface * const winterface = vpx_get_worker_interface ( ) ; ctx -> last_show_frame = - 1 ; ctx -> next_submit_worker_id = 0 ; ctx -> last_submit_worker_id = 0 ; ctx -> next_output_worker_id = 0 ; ctx -> frame_cache_read = 0 ; ctx -> frame_cache_write = 0 ; ctx -> num_cache_frames = 0 ; ctx -> need_resync = 1 ; ctx -> num_frame_workers = ( ctx -> frame_parallel_decode == 1 ) ? <S2SV_ModEnd> ctx -> cfg <S2SV_ModStart> cfg . threads : 1 ; if ( ctx -> num_frame_workers > MAX_DECODE_THREADS ) ctx -> num_frame_workers = MAX_DECODE_THREADS ; ctx -> available_threads = ctx -> num_frame_workers ; ctx -> flushed = 0 ; ctx -> buffer_pool = ( BufferPool * ) vpx_calloc ( 1 , sizeof ( BufferPool ) ) ; if ( ctx -> buffer_pool == NULL ) return VPX_CODEC_MEM_ERROR ; # if CONFIG_MULTITHREAD if ( pthread_mutex_init ( & ctx -> buffer_pool -> pool_mutex , NULL ) ) { set_error_detail ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>buffer<S2SV_blank>pool<S2SV_blank>mutex\" ) ; return VPX_CODEC_MEM_ERROR ; } # endif ctx -> frame_workers = ( VPxWorker * ) vpx_malloc ( ctx -> num_frame_workers * sizeof ( * ctx -> frame_workers ) ) ; if ( ctx -> frame_workers == NULL ) { set_error_detail ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>frame_workers\" ) ; return VPX_CODEC_MEM_ERROR ; } for ( i = 0 ; i < ctx -> num_frame_workers ; ++ i ) { VPxWorker * const worker = & ctx -> frame_workers [ i ] ; FrameWorkerData * frame_worker_data = NULL ; winterface -> init ( worker ) ; worker -> data1 = vpx_memalign ( 32 , sizeof ( FrameWorkerData ) ) ; if ( worker -> data1 == NULL ) { set_error_detail ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>frame_worker_data\" ) ; return VPX_CODEC_MEM_ERROR ; } frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; frame_worker_data <S2SV_ModEnd> -> pbi = <S2SV_ModStart> = vp9_decoder_create ( ctx -> buffer_pool ) ; if ( frame_worker_data <S2SV_ModEnd> -> pbi == <S2SV_ModStart> == NULL ) { set_error_detail ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>frame_worker_data\" ) ; return VPX_CODEC_MEM_ERROR ; } frame_worker_data -> pbi -> frame_worker_owner = worker ; frame_worker_data -> worker_id = i ; frame_worker_data -> scratch_buffer = NULL ; frame_worker_data -> scratch_buffer_size = 0 ; frame_worker_data -> frame_context_ready = 0 ; frame_worker_data -> received_frame = 0 ; # if CONFIG_MULTITHREAD if ( pthread_mutex_init ( & frame_worker_data -> stats_mutex , NULL ) ) { set_error_detail ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>frame_worker_data<S2SV_blank>mutex\" ) ; return VPX_CODEC_MEM_ERROR ; } if ( pthread_cond_init ( & frame_worker_data -> stats_cond , NULL ) ) { set_error_detail ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>frame_worker_data<S2SV_blank>cond\" ) ; return VPX_CODEC_MEM_ERROR ; } # endif frame_worker_data -> pbi -> max_threads = ( ctx -> frame_parallel_decode == 0 ) ? ctx -> cfg . threads : 0 ; frame_worker_data -> pbi -> inv_tile_order = ctx -> invert_tile_order ; frame_worker_data -> pbi -> frame_parallel_decode = ctx -> frame_parallel_decode ; frame_worker_data -> pbi -> common . frame_parallel_decode = ctx -> frame_parallel_decode ; worker -> hook = ( VPxWorkerHook ) frame_worker_hook ; if ( ! winterface -> reset ( worker ) ) { set_error_detail ( ctx , \"Frame<S2SV_blank>Worker<S2SV_blank>thread<S2SV_blank>creation<S2SV_blank>failed\" ) ; return VPX_CODEC_MEM_ERROR ; } } <S2SV_ModEnd> if ( ! <S2SV_ModStart> ctx ) ; return VPX_CODEC_OK ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_eventreport ( unsigned long arg ) <S2SV_EndBug> { struct mpt_ioctl_eventreport __user * uarg = ( void __user * ) arg ; struct mpt_ioctl_eventreport karg ; <S2SV_StartBug> MPT_ADAPTER * ioc ; <S2SV_EndBug> int iocnum ; int numBytes , maxEvents , max ; if ( copy_from_user ( & karg , uarg , sizeof ( struct mpt_ioctl_eventreport ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_eventreport<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>mpt_ioctl_eventreport<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uarg ) ; <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> } if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || ( ioc == NULL ) ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_eventreport()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; } dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"mptctl_eventreport<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; numBytes = karg . hdr . maxDataSize - sizeof ( mpt_ioctl_header ) ; maxEvents = numBytes / sizeof ( MPT_IOCTL_EVENTS ) ; max = MPTCTL_EVENT_LOG_SIZE < maxEvents ? MPTCTL_EVENT_LOG_SIZE : maxEvents ; if ( ( max < 1 ) || ! ioc -> events ) return - ENODATA ; ioc -> aen_event_read_flag = 0 ; numBytes = max * sizeof ( MPT_IOCTL_EVENTS ) ; if ( copy_to_user ( uarg -> eventData , ioc -> events , numBytes ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_eventreport<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>out<S2SV_blank>mpt_ioctl_eventreport<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , ioc -> events ) ; return - EFAULT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_eventreport ( MPT_ADAPTER * ioc , <S2SV_ModStart> mpt_ioctl_eventreport karg ; <S2SV_ModEnd> int numBytes , <S2SV_ModStart> return - EFAULT <S2SV_ModEnd> ; } dctlprintk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15128\n\n```\nCWE-119 int hugetlb_mcopy_atomic_pte ( struct mm_struct * dst_mm , pte_t * dst_pte , struct vm_area_struct * dst_vma , unsigned long dst_addr , unsigned long src_addr , struct page * * pagep ) { <S2SV_StartBug> int vm_shared = dst_vma -> vm_flags & VM_SHARED ; <S2SV_EndBug> struct hstate * h = hstate_vma ( dst_vma ) ; pte_t _dst_pte ; spinlock_t * ptl ; int ret ; struct page * page ; if ( ! * pagep ) { ret = - ENOMEM ; page = alloc_huge_page ( dst_vma , dst_addr , 0 ) ; if ( IS_ERR ( page ) ) goto out ; ret = copy_huge_page_from_user ( page , ( const void __user * ) src_addr , pages_per_huge_page ( h ) , false ) ; if ( unlikely ( ret ) ) { ret = - EFAULT ; * pagep = page ; goto out ; } } else { page = * pagep ; * pagep = NULL ; } __SetPageUptodate ( page ) ; set_page_huge_active ( page ) ; <S2SV_StartBug> if ( vm_shared ) { <S2SV_EndBug> <S2SV_StartBug> struct address_space * mapping = dst_vma -> vm_file -> f_mapping ; <S2SV_EndBug> pgoff_t idx = vma_hugecache_offset ( h , dst_vma , dst_addr ) ; ret = huge_add_to_page_cache ( page , mapping , idx ) ; if ( ret ) goto out_release_nounlock ; } ptl = huge_pte_lockptr ( h , dst_mm , dst_pte ) ; <S2SV_StartBug> spin_lock ( ptl ) ; <S2SV_EndBug> ret = - EEXIST ; if ( ! huge_pte_none ( huge_ptep_get ( dst_pte ) ) ) goto out_release_unlock ; if ( vm_shared ) { page_dup_rmap ( page , true ) ; } else { ClearPagePrivate ( page ) ; hugepage_add_new_anon_rmap ( page , dst_vma , dst_addr ) ; } _dst_pte = make_huge_pte ( dst_vma , page , dst_vma -> vm_flags & VM_WRITE ) ; if ( dst_vma -> vm_flags & VM_WRITE ) _dst_pte = huge_pte_mkdirty ( _dst_pte ) ; _dst_pte = pte_mkyoung ( _dst_pte ) ; set_huge_pte_at ( dst_mm , dst_addr , dst_pte , _dst_pte ) ; ( void ) huge_ptep_set_access_flags ( dst_vma , dst_addr , dst_pte , _dst_pte , dst_vma -> vm_flags & VM_WRITE ) ; hugetlb_count_add ( pages_per_huge_page ( h ) , dst_mm ) ; update_mmu_cache ( dst_vma , dst_addr , dst_pte ) ; spin_unlock ( ptl ) ; if ( vm_shared ) unlock_page ( page ) ; ret = 0 ; out : return ret ; out_release_unlock : spin_unlock ( ptl ) ; if ( vm_shared ) unlock_page ( page ) ; out_release_nounlock : put_page ( page ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pagep ) { struct address_space * mapping ; pgoff_t idx ; unsigned long size ; <S2SV_ModStart> page ) ; mapping = dst_vma -> vm_file -> f_mapping ; idx = vma_hugecache_offset ( h , dst_vma , dst_addr ) ; <S2SV_ModStart> vm_shared ) { size = i_size_read ( mapping -> host ) >> huge_page_shift ( h ) ; ret = - EFAULT ; if ( idx >= size ) goto out_release_nounlock <S2SV_ModEnd> ; ret = <S2SV_ModStart> ( ptl ) ; size = i_size_read ( mapping -> host ) >> huge_page_shift ( h ) ; ret = - EFAULT ; if ( idx >= size ) goto out_release_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5547\n\n```\nCWE-119 static ssize_t k90_show_current_profile ( struct device * dev , struct device_attribute * attr , char * buf ) { int ret ; struct usb_interface * usbif = to_usb_interface ( dev -> parent ) ; struct usb_device * usbdev = interface_to_usbdev ( usbif ) ; int current_profile ; <S2SV_StartBug> char data [ 8 ] ; <S2SV_EndBug> ret = usb_control_msg ( usbdev , usb_rcvctrlpipe ( usbdev , 0 ) , K90_REQUEST_STATUS , USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE , 0 , 0 , data , 8 , USB_CTRL_SET_TIMEOUT ) ; if ( ret < 0 ) { dev_warn ( dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>K90<S2SV_blank>initial<S2SV_blank>state<S2SV_blank>(error<S2SV_blank>%d).\\\\n\" , ret ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> } current_profile = data [ 7 ] ; if ( current_profile < 1 || current_profile > 3 ) { dev_warn ( dev , \"Read<S2SV_blank>invalid<S2SV_blank>current<S2SV_blank>profile:<S2SV_blank>%02hhx.\\\\n\" , data [ 7 ] ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return snprintf ( buf , PAGE_SIZE , \"%d\\\\n\" , current_profile ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_profile ; char * data ; data = kmalloc ( 8 , GFP_KERNEL ) ; if ( ! data ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> ret ) ; ret = - EIO ; goto out <S2SV_ModEnd> ; } current_profile <S2SV_ModStart> ] ) ; ret = <S2SV_ModEnd> - EIO ; <S2SV_ModStart> - EIO ; goto out ; } ret = snprintf ( buf , PAGE_SIZE , \"%d\\\\n\" , current_profile ) ; out : kfree ( data ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1601\n\n```\nCWE-399 long kvm_arch_vm_ioctl ( struct file * filp , unsigned int ioctl , unsigned long arg ) { struct kvm * kvm = filp -> private_data ; void __user * argp = ( void __user * ) arg ; int r = - ENOTTY ; union { struct kvm_pit_state ps ; struct kvm_pit_state2 ps2 ; struct kvm_pit_config pit_config ; } u ; switch ( ioctl ) { case KVM_SET_TSS_ADDR : r = kvm_vm_ioctl_set_tss_addr ( kvm , arg ) ; if ( r < 0 ) goto out ; break ; case KVM_SET_IDENTITY_MAP_ADDR : { u64 ident_addr ; r = - EFAULT ; if ( copy_from_user ( & ident_addr , argp , sizeof ident_addr ) ) goto out ; r = kvm_vm_ioctl_set_identity_map_addr ( kvm , ident_addr ) ; if ( r < 0 ) goto out ; break ; } case KVM_SET_NR_MMU_PAGES : r = kvm_vm_ioctl_set_nr_mmu_pages ( kvm , arg ) ; if ( r ) goto out ; break ; case KVM_GET_NR_MMU_PAGES : r = kvm_vm_ioctl_get_nr_mmu_pages ( kvm ) ; break ; case KVM_CREATE_IRQCHIP : { struct kvm_pic * vpic ; mutex_lock ( & kvm -> lock ) ; r = - EEXIST ; if ( kvm -> arch . vpic ) goto create_irqchip_unlock ; <S2SV_StartBug> r = - ENOMEM ; <S2SV_EndBug> vpic = kvm_create_pic ( kvm ) ; if ( vpic ) { r = kvm_ioapic_init ( kvm ) ; if ( r ) { mutex_lock ( & kvm -> slots_lock ) ; kvm_io_bus_unregister_dev ( kvm , KVM_PIO_BUS , & vpic -> dev_master ) ; kvm_io_bus_unregister_dev ( kvm , KVM_PIO_BUS , & vpic -> dev_slave ) ; kvm_io_bus_unregister_dev ( kvm , KVM_PIO_BUS , & vpic -> dev_eclr ) ; mutex_unlock ( & kvm -> slots_lock ) ; kfree ( vpic ) ; goto create_irqchip_unlock ; } } else goto create_irqchip_unlock ; smp_wmb ( ) ; kvm -> arch . vpic = vpic ; smp_wmb ( ) ; r = kvm_setup_default_irq_routing ( kvm ) ; if ( r ) { mutex_lock ( & kvm -> slots_lock ) ; mutex_lock ( & kvm -> irq_lock ) ; kvm_ioapic_destroy ( kvm ) ; kvm_destroy_pic ( kvm ) ; mutex_unlock ( & kvm -> irq_lock ) ; mutex_unlock ( & kvm -> slots_lock ) ; } create_irqchip_unlock : mutex_unlock ( & kvm -> lock ) ; break ; } case KVM_CREATE_PIT : u . pit_config . flags = KVM_PIT_SPEAKER_DUMMY ; goto create_pit ; case KVM_CREATE_PIT2 : r = - EFAULT ; if ( copy_from_user ( & u . pit_config , argp , sizeof ( struct kvm_pit_config ) ) ) goto out ; create_pit : mutex_lock ( & kvm -> slots_lock ) ; r = - EEXIST ; if ( kvm -> arch . vpit ) goto create_pit_unlock ; r = - ENOMEM ; kvm -> arch . vpit = kvm_create_pit ( kvm , u . pit_config . flags ) ; if ( kvm -> arch . vpit ) r = 0 ; create_pit_unlock : mutex_unlock ( & kvm -> slots_lock ) ; break ; case KVM_IRQ_LINE_STATUS : case KVM_IRQ_LINE : { struct kvm_irq_level irq_event ; r = - EFAULT ; if ( copy_from_user ( & irq_event , argp , sizeof irq_event ) ) goto out ; r = - ENXIO ; if ( irqchip_in_kernel ( kvm ) ) { __s32 status ; status = kvm_set_irq ( kvm , KVM_USERSPACE_IRQ_SOURCE_ID , irq_event . irq , irq_event . level ) ; if ( ioctl == KVM_IRQ_LINE_STATUS ) { r = - EFAULT ; irq_event . status = status ; if ( copy_to_user ( argp , & irq_event , sizeof irq_event ) ) goto out ; } r = 0 ; } break ; } case KVM_GET_IRQCHIP : { struct kvm_irqchip * chip ; chip = memdup_user ( argp , sizeof ( * chip ) ) ; if ( IS_ERR ( chip ) ) { r = PTR_ERR ( chip ) ; goto out ; } r = - ENXIO ; if ( ! irqchip_in_kernel ( kvm ) ) goto get_irqchip_out ; r = kvm_vm_ioctl_get_irqchip ( kvm , chip ) ; if ( r ) goto get_irqchip_out ; r = - EFAULT ; if ( copy_to_user ( argp , chip , sizeof * chip ) ) goto get_irqchip_out ; r = 0 ; get_irqchip_out : kfree ( chip ) ; if ( r ) goto out ; break ; } case KVM_SET_IRQCHIP : { struct kvm_irqchip * chip ; chip = memdup_user ( argp , sizeof ( * chip ) ) ; if ( IS_ERR ( chip ) ) { r = PTR_ERR ( chip ) ; goto out ; } r = - ENXIO ; if ( ! irqchip_in_kernel ( kvm ) ) goto set_irqchip_out ; r = kvm_vm_ioctl_set_irqchip ( kvm , chip ) ; if ( r ) goto set_irqchip_out ; r = 0 ; set_irqchip_out : kfree ( chip ) ; if ( r ) goto out ; break ; } case KVM_GET_PIT : { r = - EFAULT ; if ( copy_from_user ( & u . ps , argp , sizeof ( struct kvm_pit_state ) ) ) goto out ; r = - ENXIO ; if ( ! kvm -> arch . vpit ) goto out ; r = kvm_vm_ioctl_get_pit ( kvm , & u . ps ) ; if ( r ) goto out ; r = - EFAULT ; if ( copy_to_user ( argp , & u . ps , sizeof ( struct kvm_pit_state ) ) ) goto out ; r = 0 ; break ; } case KVM_SET_PIT : { r = - EFAULT ; if ( copy_from_user ( & u . ps , argp , sizeof u . ps ) ) goto out ; r = - ENXIO ; if ( ! kvm -> arch . vpit ) goto out ; r = kvm_vm_ioctl_set_pit ( kvm , & u . ps ) ; if ( r ) goto out ; r = 0 ; break ; } case KVM_GET_PIT2 : { r = - ENXIO ; if ( ! kvm -> arch . vpit ) goto out ; r = kvm_vm_ioctl_get_pit2 ( kvm , & u . ps2 ) ; if ( r ) goto out ; r = - EFAULT ; if ( copy_to_user ( argp , & u . ps2 , sizeof ( u . ps2 ) ) ) goto out ; r = 0 ; break ; } case KVM_SET_PIT2 : { r = - EFAULT ; if ( copy_from_user ( & u . ps2 , argp , sizeof ( u . ps2 ) ) ) goto out ; r = - ENXIO ; if ( ! kvm -> arch . vpit ) goto out ; r = kvm_vm_ioctl_set_pit2 ( kvm , & u . ps2 ) ; if ( r ) goto out ; r = 0 ; break ; } case KVM_REINJECT_CONTROL : { struct kvm_reinject_control control ; r = - EFAULT ; if ( copy_from_user ( & control , argp , sizeof ( control ) ) ) goto out ; r = kvm_vm_ioctl_reinject ( kvm , & control ) ; if ( r ) goto out ; r = 0 ; break ; } case KVM_XEN_HVM_CONFIG : { r = - EFAULT ; if ( copy_from_user ( & kvm -> arch . xen_hvm_config , argp , sizeof ( struct kvm_xen_hvm_config ) ) ) goto out ; r = - EINVAL ; if ( kvm -> arch . xen_hvm_config . flags ) goto out ; r = 0 ; break ; } case KVM_SET_CLOCK : { struct kvm_clock_data user_ns ; u64 now_ns ; s64 delta ; r = - EFAULT ; if ( copy_from_user ( & user_ns , argp , sizeof ( user_ns ) ) ) goto out ; r = - EINVAL ; if ( user_ns . flags ) goto out ; r = 0 ; local_irq_disable ( ) ; now_ns = get_kernel_ns ( ) ; delta = user_ns . clock - now_ns ; local_irq_enable ( ) ; kvm -> arch . kvmclock_offset = delta ; break ; } case KVM_GET_CLOCK : { struct kvm_clock_data user_ns ; u64 now_ns ; local_irq_disable ( ) ; now_ns = get_kernel_ns ( ) ; user_ns . clock = kvm -> arch . kvmclock_offset + now_ns ; local_irq_enable ( ) ; user_ns . flags = 0 ; memset ( & user_ns . pad , 0 , sizeof ( user_ns . pad ) ) ; r = - EFAULT ; if ( copy_to_user ( argp , & user_ns , sizeof ( user_ns ) ) ) goto out ; r = 0 ; break ; } default : ; } out : return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> r = - EINVAL ; if ( atomic_read ( & kvm -> online_vcpus ) ) goto create_irqchip_unlock ; r = -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10756\n\n```\nCWE-416 static void nodeDestruct ( struct SaveNode * node ) { <S2SV_StartBug> if ( node -> v == & node -> sorted ) <S2SV_EndBug> { <S2SV_StartBug> tr_free ( node -> sorted . val . l . vals ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> node ) { TR_ASSERT ( node != NULL ) ; <S2SV_ModStart> ( node -> sorted != NULL <S2SV_ModEnd> ) { tr_free <S2SV_ModStart> node -> sorted -> <S2SV_ModEnd> val . l <S2SV_ModStart> vals ) ; tr_free ( node -> sorted ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010297\n\n```\nCWE-119 TEE_Result syscall_cryp_derive_key ( unsigned long state , const struct utee_attribute * usr_params , unsigned long param_count , unsigned long derived_key ) { TEE_Result res = TEE_ERROR_NOT_SUPPORTED ; struct tee_ta_session * sess ; struct tee_obj * ko ; struct tee_obj * so ; struct tee_cryp_state * cs ; struct tee_cryp_obj_secret * sk ; const struct tee_cryp_obj_type_props * type_props ; TEE_Attribute * params = NULL ; struct user_ta_ctx * utc ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; utc = to_user_ta_ctx ( sess -> ctx ) ; res = tee_svc_cryp_get_state ( sess , tee_svc_uref_to_vaddr ( state ) , & cs ) ; if ( res != TEE_SUCCESS ) return res ; <S2SV_StartBug> params = malloc ( sizeof ( TEE_Attribute ) * param_count ) ; <S2SV_EndBug> if ( ! params ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( utc , usr_params , param_count , params ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_obj_get ( utc , cs -> key1 , & ko ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_obj_get ( utc , tee_svc_uref_to_vaddr ( derived_key ) , & so ) ; if ( res != TEE_SUCCESS ) goto out ; sk = so -> attr ; type_props = tee_svc_find_type_props ( so -> info . objectType ) ; if ( ! type_props ) { res = TEE_ERROR_NOT_SUPPORTED ; goto out ; } if ( cs -> algo == TEE_ALG_DH_DERIVE_SHARED_SECRET ) { size_t alloc_size ; struct bignum * pub ; struct bignum * ss ; if ( param_count != 1 || params [ 0 ] . attributeID != TEE_ATTR_DH_PUBLIC_VALUE ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } alloc_size = params [ 0 ] . content . ref . length * 8 ; pub = crypto_bignum_allocate ( alloc_size ) ; ss = crypto_bignum_allocate ( alloc_size ) ; if ( pub && ss ) { crypto_bignum_bin2bn ( params [ 0 ] . content . ref . buffer , params [ 0 ] . content . ref . length , pub ) ; res = crypto_acipher_dh_shared_secret ( ko -> attr , pub , ss ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = crypto_bignum_num_bytes ( ss ) ; crypto_bignum_bn2bin ( ss , ( uint8_t * ) ( sk + 1 ) ) ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } } else { res = TEE_ERROR_OUT_OF_MEMORY ; } crypto_bignum_free ( pub ) ; crypto_bignum_free ( ss ) ; } else if ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) == TEE_MAIN_ALGO_ECDH ) { size_t alloc_size ; struct ecc_public_key key_public ; uint8_t * pt_secret ; unsigned long pt_secret_len ; if ( param_count != 2 || params [ 0 ] . attributeID != TEE_ATTR_ECC_PUBLIC_VALUE_X || params [ 1 ] . attributeID != TEE_ATTR_ECC_PUBLIC_VALUE_Y ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } switch ( cs -> algo ) { case TEE_ALG_ECDH_P192 : alloc_size = 192 ; break ; case TEE_ALG_ECDH_P224 : alloc_size = 224 ; break ; case TEE_ALG_ECDH_P256 : alloc_size = 256 ; break ; case TEE_ALG_ECDH_P384 : alloc_size = 384 ; break ; case TEE_ALG_ECDH_P521 : alloc_size = 521 ; break ; default : res = TEE_ERROR_NOT_IMPLEMENTED ; goto out ; } res = crypto_acipher_alloc_ecc_public_key ( & key_public , alloc_size ) ; if ( res != TEE_SUCCESS ) goto out ; key_public . curve = ( ( struct ecc_keypair * ) ko -> attr ) -> curve ; crypto_bignum_bin2bn ( params [ 0 ] . content . ref . buffer , params [ 0 ] . content . ref . length , key_public . x ) ; crypto_bignum_bin2bn ( params [ 1 ] . content . ref . buffer , params [ 1 ] . content . ref . length , key_public . y ) ; pt_secret = ( uint8_t * ) ( sk + 1 ) ; pt_secret_len = sk -> alloc_size ; res = crypto_acipher_ecc_shared_secret ( ko -> attr , & key_public , pt_secret , & pt_secret_len ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = pt_secret_len ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } crypto_acipher_free_ecc_public_key ( & key_public ) ; } # if defined ( CFG_CRYPTO_HKDF ) else if ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) == TEE_MAIN_ALGO_HKDF ) { void * salt , * info ; size_t salt_len , info_len , okm_len ; uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH ( cs -> algo ) ; struct tee_cryp_obj_secret * ik = ko -> attr ; const uint8_t * ikm = ( const uint8_t * ) ( ik + 1 ) ; res = get_hkdf_params ( params , param_count , & salt , & salt_len , & info , & info_len , & okm_len ) ; if ( res != TEE_SUCCESS ) goto out ; if ( okm_len > ik -> alloc_size ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } res = tee_cryp_hkdf ( hash_id , ikm , ik -> key_size , salt , salt_len , info , info_len , ( uint8_t * ) ( sk + 1 ) , okm_len ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = okm_len ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } } # endif # if defined ( CFG_CRYPTO_CONCAT_KDF ) else if ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) == TEE_MAIN_ALGO_CONCAT_KDF ) { void * info ; size_t info_len , derived_key_len ; uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH ( cs -> algo ) ; struct tee_cryp_obj_secret * ss = ko -> attr ; const uint8_t * shared_secret = ( const uint8_t * ) ( ss + 1 ) ; res = get_concat_kdf_params ( params , param_count , & info , & info_len , & derived_key_len ) ; if ( res != TEE_SUCCESS ) goto out ; if ( derived_key_len > ss -> alloc_size ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } res = tee_cryp_concat_kdf ( hash_id , shared_secret , ss -> key_size , info , info_len , ( uint8_t * ) ( sk + 1 ) , derived_key_len ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = derived_key_len ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } } # endif # if defined ( CFG_CRYPTO_PBKDF2 ) else if ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) == TEE_MAIN_ALGO_PBKDF2 ) { void * salt ; size_t salt_len , iteration_count , derived_key_len ; uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH ( cs -> algo ) ; struct tee_cryp_obj_secret * ss = ko -> attr ; const uint8_t * password = ( const uint8_t * ) ( ss + 1 ) ; res = get_pbkdf2_params ( params , param_count , & salt , & salt_len , & derived_key_len , & iteration_count ) ; if ( res != TEE_SUCCESS ) goto out ; if ( derived_key_len > ss -> alloc_size ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } res = tee_cryp_pbkdf2 ( hash_id , password , ss -> key_size , salt , salt_len , iteration_count , ( uint8_t * ) ( sk + 1 ) , derived_key_len ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = derived_key_len ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } } # endif else res = TEE_ERROR_NOT_SUPPORTED ; out : free ( params ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , param_count , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 PTA * ptaReadStream ( FILE * fp ) { char typestr [ 128 ] ; l_int32 i , n , ix , iy , type , version ; l_float32 x , y ; PTA * pta ; PROCNAME ( \"ptaReadStream\" ) ; if ( ! fp ) return ( PTA * ) ERROR_PTR ( \"stream<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( fscanf ( fp , \"\\\\n<S2SV_blank>Pta<S2SV_blank>Version<S2SV_blank>%d\\\\n\" , & version ) != 1 ) return ( PTA * ) ERROR_PTR ( \"not<S2SV_blank>a<S2SV_blank>pta<S2SV_blank>file\" , procName , NULL ) ; if ( version != PTA_VERSION_NUMBER ) return ( PTA * ) ERROR_PTR ( \"invalid<S2SV_blank>pta<S2SV_blank>version\" , procName , NULL ) ; <S2SV_StartBug> if ( fscanf ( fp , \"<S2SV_blank>Number<S2SV_blank>of<S2SV_blank>pts<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>format<S2SV_blank>=<S2SV_blank>%s\\\\n\" , & n , typestr ) != 2 ) <S2SV_EndBug> return ( PTA * ) ERROR_PTR ( \"not<S2SV_blank>a<S2SV_blank>pta<S2SV_blank>file\" , procName , NULL ) ; if ( ! strcmp ( typestr , \"float\" ) ) type = 0 ; else type = 1 ; if ( ( pta = ptaCreate ( n ) ) == NULL ) return ( PTA * ) ERROR_PTR ( \"pta<S2SV_blank>not<S2SV_blank>made\" , procName , NULL ) ; for ( i = 0 ; i < n ; i ++ ) { if ( type == 0 ) { if ( fscanf ( fp , \"<S2SV_blank><S2SV_blank><S2SV_blank>(%f,<S2SV_blank>%f)\\\\n\" , & x , & y ) != 2 ) { ptaDestroy ( & pta ) ; return ( PTA * ) ERROR_PTR ( \"error<S2SV_blank>reading<S2SV_blank>floats\" , procName , NULL ) ; } ptaAddPt ( pta , x , y ) ; } else { if ( fscanf ( fp , \"<S2SV_blank><S2SV_blank><S2SV_blank>(%d,<S2SV_blank>%d)\\\\n\" , & ix , & iy ) != 2 ) { ptaDestroy ( & pta ) ; return ( PTA * ) ERROR_PTR ( \"error<S2SV_blank>reading<S2SV_blank>ints\" , procName , NULL ) ; } ptaAddPt ( pta , ix , iy ) ; } } return pta ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( fp , \"<S2SV_blank>Number<S2SV_blank>of<S2SV_blank>pts<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>format<S2SV_blank>=<S2SV_blank>%127s\\\\n\" <S2SV_ModEnd> , & n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16718\n\n```\nCWE-78 static char * __filterShell ( const char * arg ) { r_return_val_if_fail ( arg , NULL ) ; char * a = malloc ( strlen ( arg ) + 1 ) ; if ( ! a ) { return NULL ; } char * b = a ; while ( * arg ) { <S2SV_StartBug> switch ( * arg ) { <S2SV_EndBug> case '@' : case '`' : case '|' : case ';' : <S2SV_StartBug> case '\\\\n' : <S2SV_EndBug> break ; default : <S2SV_StartBug> * b ++ = * arg ; <S2SV_EndBug> break ; } arg ++ ; } * b = 0 ; return a ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg ) { char ch = * arg ; switch ( ch <S2SV_ModEnd> ) { case <S2SV_ModStart> ';' : case '=' : case <S2SV_ModStart> b ++ = ch <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9143\n\n```\nCWE-772 static Image * ReadARTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { const unsigned char * pixels ; Image * image ; QuantumInfo * quantum_info ; QuantumType quantum_type ; MagickBooleanType status ; size_t length ; ssize_t count , y ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 1 ; image -> endian = MSBEndian ; ( void ) ReadBlobLSBShort ( image ) ; image -> columns = ( size_t ) ReadBlobLSBShort ( image ) ; ( void ) ReadBlobLSBShort ( image ) ; image -> rows = ( size_t ) ReadBlobLSBShort ( image ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( AcquireImageColormap ( image , 2 ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } SetImageColorspace ( image , GRAYColorspace ) ; quantum_type = IndexQuantum ; quantum_info = AcquireQuantumInfo ( image_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; length = GetQuantumExtent ( image , quantum_info , quantum_type ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register PixelPacket * magick_restrict q ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; if ( count != ( ssize_t ) length ) <S2SV_StartBug> ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; <S2SV_EndBug> ( void ) ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; ( void ) ReadBlobStream ( image , ( size_t ) ( - ( ssize_t ) length ) & 0x01 , GetQuantumPixels ( quantum_info ) , & count ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } SetQuantumImageType ( image , quantum_type ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) length ) { quantum_info = DestroyQuantumInfo ( quantum_info ) ; <S2SV_ModStart> \"UnableToReadImageData\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 char * _multi_string_alloc_and_copy ( LPCWSTR in ) { char * chr ; int len = 0 ; if ( ! in ) { <S2SV_StartBug> return in ; <S2SV_EndBug> } while ( in [ len ] != 0 || in [ len + 1 ] != 0 ) { len ++ ; } chr = malloc ( len + 2 ) ; len = 0 ; while ( in [ len ] != 0 || in [ len + 1 ] != 0 ) { chr [ len ] = 0xFF & in [ len ] ; len ++ ; } chr [ len ++ ] = '\\\\0' ; chr [ len ++ ] = '\\\\0' ; return chr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return NULL <S2SV_ModEnd> ; } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5224\n\n```\nCWE-264 int main ( int argc , char * * argv ) { char * oldshell ; int nullshell = 0 ; const uid_t uid = getuid ( ) ; struct sinfo info = { 0 } ; struct passwd * pw ; sanitize_env ( ) ; setlocale ( LC_ALL , \"\" ) ; bindtextdomain ( PACKAGE , LOCALEDIR ) ; textdomain ( PACKAGE ) ; atexit ( close_stdout ) ; parse_argv ( argc , argv , & info ) ; if ( ! info . username ) { pw = getpwuid ( uid ) ; if ( ! pw ) errx ( EXIT_FAILURE , _ ( \"you<S2SV_blank>(user<S2SV_blank>%d)<S2SV_blank>don\\'t<S2SV_blank>exist.\" ) , uid ) ; } else { pw = getpwnam ( info . username ) ; if ( ! pw ) errx ( EXIT_FAILURE , _ ( \"user<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist.\" ) , info . username ) ; } # ifndef HAVE_LIBUSER if ( ! ( is_local ( pw -> pw_name ) ) ) errx ( EXIT_FAILURE , _ ( \"can<S2SV_blank>only<S2SV_blank>change<S2SV_blank>local<S2SV_blank>entries\" ) ) ; # endif # ifdef HAVE_LIBSELINUX if ( is_selinux_enabled ( ) > 0 ) { if ( uid == 0 ) { if ( checkAccess ( pw -> pw_name , PASSWD__CHSH ) != 0 ) { security_context_t user_context ; if ( getprevcon ( & user_context ) < 0 ) user_context = ( security_context_t ) NULL ; errx ( EXIT_FAILURE , _ ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>authorized<S2SV_blank>to<S2SV_blank>change<S2SV_blank>the<S2SV_blank>shell<S2SV_blank>of<S2SV_blank>%s\" ) , user_context ? : _ ( \"Unknown<S2SV_blank>user<S2SV_blank>context\" ) , pw -> pw_name ) ; } } if ( setupDefaultContext ( _PATH_PASSWD ) != 0 ) errx ( EXIT_FAILURE , _ ( \"can\\'t<S2SV_blank>set<S2SV_blank>default<S2SV_blank>context<S2SV_blank>for<S2SV_blank>%s\" ) , _PATH_PASSWD ) ; } # endif oldshell = pw -> pw_shell ; if ( oldshell == NULL || * oldshell == '\\\\0' ) { oldshell = _PATH_BSHELL ; nullshell = 1 ; } # ifdef HAVE_LIBUSER if ( geteuid ( ) != getuid ( ) && uid != pw -> pw_uid ) { # else if ( uid != 0 && uid != pw -> pw_uid ) { # endif errno = EACCES ; err ( EXIT_FAILURE , _ ( \"running<S2SV_blank>UID<S2SV_blank>doesn\\'t<S2SV_blank>match<S2SV_blank>UID<S2SV_blank>of<S2SV_blank>user<S2SV_blank>we\\'re<S2SV_blank>\" \"altering,<S2SV_blank>shell<S2SV_blank>change<S2SV_blank>denied\" ) ) ; } if ( uid != 0 && ! get_shell_list ( oldshell ) ) { errno = EACCES ; err ( EXIT_FAILURE , _ ( \"your<S2SV_blank>shell<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>%s,<S2SV_blank>\" \"shell<S2SV_blank>change<S2SV_blank>denied\" ) , _PATH_SHELLS ) ; } printf ( _ ( \"Changing<S2SV_blank>shell<S2SV_blank>for<S2SV_blank>%s.\\\\n\" ) , pw -> pw_name ) ; # if ! defined ( HAVE_LIBUSER ) && defined ( CHFN_CHSH_PASSWORD ) if ( ! auth_pam ( \"chsh\" , uid , pw -> pw_name ) ) { return EXIT_FAILURE ; } # endif if ( ! info . shell ) { info . shell = ask_new_shell ( _ ( \"New<S2SV_blank>shell\" ) , oldshell ) ; if ( ! info . shell ) return EXIT_SUCCESS ; } check_shell ( info . shell ) ; if ( ! nullshell && strcmp ( oldshell , info . shell ) == 0 ) errx ( EXIT_SUCCESS , _ ( \"Shell<S2SV_blank>not<S2SV_blank>changed.\" ) ) ; # ifdef HAVE_LIBUSER if ( set_value_libuser ( \"chsh\" , pw -> pw_name , uid , LU_LOGINSHELL , info . shell ) < 0 ) errx ( EXIT_FAILURE , _ ( \"Shell<S2SV_blank>*NOT*<S2SV_blank>changed.<S2SV_blank><S2SV_blank>Try<S2SV_blank>again<S2SV_blank>later.\" ) ) ; # else pw -> pw_shell = info . shell ; <S2SV_StartBug> if ( setpwnam ( pw ) < 0 ) <S2SV_EndBug> err ( EXIT_FAILURE , _ ( \"setpwnam<S2SV_blank>failed\\\\n\" \"Shell<S2SV_blank>*NOT*<S2SV_blank>changed.<S2SV_blank><S2SV_blank>Try<S2SV_blank>again<S2SV_blank>later.\" ) ) ; # endif printf ( _ ( \"Shell<S2SV_blank>changed.\\\\n\" ) ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> setpwnam ( pw , \".chsh\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15471\n\n```\nCWE-125 void ndpi_parse_packet_line_info ( struct ndpi_detection_module_struct * ndpi_str , struct ndpi_flow_struct * flow ) { u_int32_t a ; struct ndpi_packet_struct * packet = & flow -> packet ; if ( ( packet -> payload_packet_len < 3 ) || ( packet -> payload == NULL ) ) return ; if ( packet -> packet_lines_parsed_complete != 0 ) return ; packet -> packet_lines_parsed_complete = 1 ; ndpi_reset_packet_line_info ( packet ) ; packet -> line [ packet -> parsed_lines ] . ptr = packet -> payload ; packet -> line [ packet -> parsed_lines ] . len = 0 ; for ( a = 0 ; ( a < packet -> payload_packet_len ) && ( packet -> parsed_lines < NDPI_MAX_PARSE_LINES_PER_PACKET ) ; a ++ ) { if ( ( a + 1 ) >= packet -> payload_packet_len ) return ; if ( get_u_int16_t ( packet -> payload , a ) == ntohs ( 0x0d0a ) ) { if ( ( ( a + 3 ) <= packet -> payload_packet_len ) && ( get_u_int16_t ( packet -> payload , a + 2 ) == ntohs ( 0x0d0a ) ) ) { int diff ; u_int32_t a1 = a + 4 ; <S2SV_StartBug> diff = ndpi_min ( packet -> payload_packet_len - a1 , sizeof ( flow -> initial_binary_bytes ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( diff > 0 ) { <S2SV_EndBug> memcpy ( & flow -> initial_binary_bytes , & packet -> payload [ a1 ] , diff ) ; flow -> initial_binary_bytes_len = diff ; } } packet -> line [ packet -> parsed_lines ] . len = ( u_int16_t ) ( ( ( unsigned long ) & packet -> payload [ a ] ) - ( ( unsigned long ) packet -> line [ packet -> parsed_lines ] . ptr ) ) ; if ( packet -> parsed_lines == 0 && packet -> line [ 0 ] . len >= NDPI_STATICSTRING_LEN ( \"HTTP/1.X<S2SV_blank>200<S2SV_blank>\" ) && strncasecmp ( ( const char * ) packet -> line [ 0 ] . ptr , \"HTTP/1.\" , NDPI_STATICSTRING_LEN ( \"HTTP/1.\" ) ) == 0 && packet -> line [ 0 ] . ptr [ NDPI_STATICSTRING_LEN ( \"HTTP/1.X<S2SV_blank>\" ) ] > '0' && packet -> line [ 0 ] . ptr [ NDPI_STATICSTRING_LEN ( \"HTTP/1.X<S2SV_blank>\" ) ] < '6' ) { packet -> http_response . ptr = & packet -> line [ 0 ] . ptr [ NDPI_STATICSTRING_LEN ( \"HTTP/1.1<S2SV_blank>\" ) ] ; packet -> http_response . len = packet -> line [ 0 ] . len - NDPI_STATICSTRING_LEN ( \"HTTP/1.1<S2SV_blank>\" ) ; packet -> http_num_headers ++ ; if ( packet -> payload_packet_len >= 12 ) { char buf [ 4 ] ; strncpy ( buf , ( char * ) & packet -> payload [ 9 ] , 3 ) ; buf [ 3 ] = '\\\\0' ; flow -> http . response_status_code = atoi ( buf ) ; if ( ( flow -> http . response_status_code < 100 ) || ( flow -> http . response_status_code > 509 ) ) flow -> http . response_status_code = 0 ; } } if ( packet -> line [ packet -> parsed_lines ] . len > NDPI_STATICSTRING_LEN ( \"Server:\" ) + 1 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Server:\" , NDPI_STATICSTRING_LEN ( \"Server:\" ) ) == 0 ) { if ( packet -> line [ packet -> parsed_lines ] . ptr [ NDPI_STATICSTRING_LEN ( \"Server:\" ) ] == '<S2SV_blank>' ) { packet -> server_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ NDPI_STATICSTRING_LEN ( \"Server:\" ) + 1 ] ; packet -> server_line . len = packet -> line [ packet -> parsed_lines ] . len - ( NDPI_STATICSTRING_LEN ( \"Server:\" ) + 1 ) ; } else { packet -> server_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ NDPI_STATICSTRING_LEN ( \"Server:\" ) ] ; packet -> server_line . len = packet -> line [ packet -> parsed_lines ] . len - NDPI_STATICSTRING_LEN ( \"Server:\" ) ; } packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 6 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Host:\" , 5 ) == 0 ) { if ( packet -> line [ packet -> parsed_lines ] . ptr [ 5 ] == '<S2SV_blank>' ) { packet -> host_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 6 ] ; packet -> host_line . len = packet -> line [ packet -> parsed_lines ] . len - 6 ; } else { packet -> host_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 5 ] ; packet -> host_line . len = packet -> line [ packet -> parsed_lines ] . len - 5 ; } packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 17 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"X-Forwarded-For:\" , 16 ) == 0 ) { if ( packet -> line [ packet -> parsed_lines ] . ptr [ 16 ] == '<S2SV_blank>' ) { packet -> forwarded_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 17 ] ; packet -> forwarded_line . len = packet -> line [ packet -> parsed_lines ] . len - 17 ; } else { packet -> forwarded_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 16 ] ; packet -> forwarded_line . len = packet -> line [ packet -> parsed_lines ] . len - 16 ; } packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 14 && ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Content-Type:<S2SV_blank>\" , 14 ) == 0 || strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Content-type:<S2SV_blank>\" , 14 ) == 0 ) ) { packet -> content_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 14 ] ; packet -> content_line . len = packet -> line [ packet -> parsed_lines ] . len - 14 ; while ( ( packet -> content_line . len > 0 ) && ( packet -> content_line . ptr [ 0 ] == '<S2SV_blank>' ) ) packet -> content_line . len -- , packet -> content_line . ptr ++ ; packet -> http_num_headers ++ ; } if ( ( packet -> content_line . len == 0 ) && ( packet -> line [ packet -> parsed_lines ] . len > 13 ) && ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Content-type:\" , 13 ) == 0 ) ) { packet -> content_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 13 ] ; packet -> content_line . len = packet -> line [ packet -> parsed_lines ] . len - 13 ; packet -> http_num_headers ++ ; } if ( packet -> content_line . len > 0 ) { char separator [ ] = { ';' , '\\\\r' , '\\\\0' } ; int i ; for ( i = 0 ; separator [ i ] != '\\\\0' ; i ++ ) { char * c = memchr ( ( char * ) packet -> content_line . ptr , separator [ i ] , packet -> content_line . len ) ; if ( c != NULL ) packet -> content_line . len = c - ( char * ) packet -> content_line . ptr ; } } if ( packet -> line [ packet -> parsed_lines ] . len > 8 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Accept:<S2SV_blank>\" , 8 ) == 0 ) { packet -> accept_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 8 ] ; packet -> accept_line . len = packet -> line [ packet -> parsed_lines ] . len - 8 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 9 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Referer:<S2SV_blank>\" , 9 ) == 0 ) { packet -> referer_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 9 ] ; packet -> referer_line . len = packet -> line [ packet -> parsed_lines ] . len - 9 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 12 && ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"User-Agent:<S2SV_blank>\" , 12 ) == 0 || strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"User-agent:<S2SV_blank>\" , 12 ) == 0 ) ) { packet -> user_agent_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 12 ] ; packet -> user_agent_line . len = packet -> line [ packet -> parsed_lines ] . len - 12 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 18 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Content-Encoding:<S2SV_blank>\" , 18 ) == 0 ) { packet -> http_encoding . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 18 ] ; packet -> http_encoding . len = packet -> line [ packet -> parsed_lines ] . len - 18 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 19 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Transfer-Encoding:<S2SV_blank>\" , 19 ) == 0 ) { packet -> http_transfer_encoding . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 19 ] ; packet -> http_transfer_encoding . len = packet -> line [ packet -> parsed_lines ] . len - 19 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 16 && ( ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Content-Length:<S2SV_blank>\" , 16 ) == 0 ) || ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"content-length:<S2SV_blank>\" , 16 ) == 0 ) ) ) { packet -> http_contentlen . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 16 ] ; packet -> http_contentlen . len = packet -> line [ packet -> parsed_lines ] . len - 16 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 21 && ( ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Content-Disposition:<S2SV_blank>\" , 21 ) == 0 ) ) ) { packet -> content_disposition_line . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 21 ] ; packet -> content_disposition_line . len = packet -> line [ packet -> parsed_lines ] . len - 21 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 8 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Cookie:<S2SV_blank>\" , 8 ) == 0 ) { packet -> http_cookie . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 8 ] ; packet -> http_cookie . len = packet -> line [ packet -> parsed_lines ] . len - 8 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 8 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Origin:<S2SV_blank>\" , 8 ) == 0 ) { packet -> http_origin . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 8 ] ; packet -> http_origin . len = packet -> line [ packet -> parsed_lines ] . len - 8 ; packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len > 16 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"X-Session-Type:<S2SV_blank>\" , 16 ) == 0 ) { packet -> http_x_session_type . ptr = & packet -> line [ packet -> parsed_lines ] . ptr [ 16 ] ; packet -> http_x_session_type . len = packet -> line [ packet -> parsed_lines ] . len - 16 ; packet -> http_num_headers ++ ; } if ( ( packet -> line [ packet -> parsed_lines ] . len > 6 && ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Date:<S2SV_blank>\" , 6 ) == 0 || strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Vary:<S2SV_blank>\" , 6 ) == 0 || strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"ETag:<S2SV_blank>\" , 6 ) == 0 ) ) || ( packet -> line [ packet -> parsed_lines ] . len > 8 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Pragma:<S2SV_blank>\" , 8 ) == 0 ) || ( packet -> line [ packet -> parsed_lines ] . len > 9 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Expires:<S2SV_blank>\" , 9 ) == 0 ) || ( packet -> line [ packet -> parsed_lines ] . len > 12 && ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Set-Cookie:<S2SV_blank>\" , 12 ) == 0 || strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Keep-Alive:<S2SV_blank>\" , 12 ) == 0 || strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Connection:<S2SV_blank>\" , 12 ) == 0 ) ) || ( packet -> line [ packet -> parsed_lines ] . len > 15 && ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Last-Modified:<S2SV_blank>\" , 15 ) == 0 || strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Accept-Ranges:<S2SV_blank>\" , 15 ) == 0 ) ) || ( packet -> line [ packet -> parsed_lines ] . len > 17 && ( strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Accept-Language:<S2SV_blank>\" , 17 ) == 0 || strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Accept-Encoding:<S2SV_blank>\" , 17 ) == 0 ) ) || ( packet -> line [ packet -> parsed_lines ] . len > 27 && strncasecmp ( ( const char * ) packet -> line [ packet -> parsed_lines ] . ptr , \"Upgrade-Insecure-Requests:<S2SV_blank>\" , 27 ) == 0 ) ) { packet -> http_num_headers ++ ; } if ( packet -> line [ packet -> parsed_lines ] . len == 0 ) { packet -> empty_line_position = a ; packet -> empty_line_position_set = 1 ; } if ( packet -> parsed_lines >= ( NDPI_MAX_PARSE_LINES_PER_PACKET - 1 ) ) return ; packet -> parsed_lines ++ ; packet -> line [ packet -> parsed_lines ] . ptr = & packet -> payload [ a + 2 ] ; packet -> line [ packet -> parsed_lines ] . len = 0 ; a ++ ; } } if ( packet -> parsed_lines >= 1 ) { packet -> line [ packet -> parsed_lines ] . len = ( u_int16_t ) ( ( ( unsigned long ) & packet -> payload [ packet -> payload_packet_len ] ) - ( ( unsigned long ) packet -> line [ packet -> parsed_lines ] . ptr ) ) ; packet -> parsed_lines ++ ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; diff = <S2SV_ModEnd> packet -> payload_packet_len <S2SV_ModStart> payload_packet_len - a1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> 0 ) { diff = ndpi_min ( diff , sizeof ( flow -> initial_binary_bytes ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7854\n\n```\nCWE-125 static RList * r_bin_wasm_get_data_entries ( RBinWasmObj * bin , RBinWasmSection * sec ) { RList * ret = NULL ; RBinWasmDataEntry * ptr = NULL ; <S2SV_StartBug> if ( ! ( ret = r_list_newf ( ( RListFree ) free ) ) ) { <S2SV_EndBug> return NULL ; } ut8 * buf = bin -> buf -> buf + ( ut32 ) sec -> payload_data ; <S2SV_StartBug> ut32 len = sec -> payload_len ; <S2SV_EndBug> ut32 count = sec -> count ; ut32 i = 0 , r = 0 ; size_t n = 0 ; <S2SV_StartBug> while ( i < len && r < count ) { <S2SV_EndBug> if ( ! ( ptr = R_NEW0 ( RBinWasmDataEntry ) ) ) { return ret ; } if ( ! ( consume_u32 ( buf + i , buf + len , & ptr -> index , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } if ( ! ( n = consume_init_expr ( buf + i , buf + len , R_BIN_WASM_END_OF_CODE , NULL , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } ptr -> offset . len = n ; if ( ! ( consume_u32 ( buf + i , buf + len , & ptr -> size , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } ptr -> data = sec -> payload_data + i ; r_list_append ( ret , ptr ) ; r += 1 ; } return ret ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; ut32 len = sec -> payload_len ; <S2SV_ModStart> -> payload_data ; int buflen = bin -> buf -> length - ( ut32 ) sec -> payload_data <S2SV_ModEnd> ; ut32 count <S2SV_ModStart> i < len && len < buflen <S2SV_ModStart> ) ) { goto beach ; } if ( i + 4 >= buflen ) { goto beach <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto beach <S2SV_ModEnd> ; } ptr <S2SV_ModStart> ) ) { goto beach ; } if ( i + 4 >= buflen ) { goto beach <S2SV_ModEnd> ; } ptr <S2SV_ModStart> return ret ; beach : free ( ptr ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2009-1194\n\n```\nCWE-189 void pango_glyph_string_set_size ( PangoGlyphString * string , gint new_len ) { g_return_if_fail ( new_len >= 0 ) ; while ( new_len > string -> space ) { if ( string -> space == 0 ) <S2SV_StartBug> string -> space = 1 ; <S2SV_EndBug> else <S2SV_StartBug> string -> space *= 2 ; <S2SV_EndBug> <S2SV_StartBug> if ( string -> space < 0 ) <S2SV_EndBug> { g_warning ( \"glyph<S2SV_blank>string<S2SV_blank>length<S2SV_blank>overflows<S2SV_blank>maximum<S2SV_blank>integer<S2SV_blank>size,<S2SV_blank>truncated\" ) ; <S2SV_StartBug> new_len = string -> space = G_MAXINT - 8 ; <S2SV_EndBug> } } string -> glyphs = g_realloc ( string -> glyphs , string -> space * sizeof ( PangoGlyphInfo ) ) ; string -> log_clusters = g_realloc ( string -> log_clusters , string -> space * sizeof ( gint ) ) ; string -> num_glyphs = new_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) { <S2SV_ModStart> -> space = 4 ; } else { const guint max_space = MIN ( G_MAXINT , G_MAXSIZE / MAX ( sizeof ( PangoGlyphInfo ) , sizeof ( gint ) ) ) ; guint more_space = ( guint ) <S2SV_ModEnd> string -> space <S2SV_ModStart> string -> space * <S2SV_ModEnd> 2 ; if <S2SV_ModStart> ; if ( more_space > max_space ) { more_space = max_space ; if ( ( guint ) new_len > max_space ) { g_error ( \"%s:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>glyph<S2SV_blank>string<S2SV_blank>of<S2SV_blank>length<S2SV_blank>%i\\\\n\" , G_STRLOC , new_len ) ; } } <S2SV_ModEnd> string -> space <S2SV_ModStart> -> space = more_space <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7854\n\n```\nCWE-125 static RList * r_bin_wasm_get_data_entries ( RBinWasmObj * bin , RBinWasmSection * sec ) { RList * ret = NULL ; RBinWasmDataEntry * ptr = NULL ; <S2SV_StartBug> if ( ! ( ret = r_list_newf ( ( RListFree ) free ) ) ) { <S2SV_EndBug> return NULL ; } ut8 * buf = bin -> buf -> buf + ( ut32 ) sec -> payload_data ; <S2SV_StartBug> ut32 len = sec -> payload_len ; <S2SV_EndBug> ut32 count = sec -> count ; ut32 i = 0 , r = 0 ; size_t n = 0 ; <S2SV_StartBug> while ( i < len && r < count ) { <S2SV_EndBug> if ( ! ( ptr = R_NEW0 ( RBinWasmDataEntry ) ) ) { return ret ; } if ( ! ( consume_u32 ( buf + i , buf + len , & ptr -> index , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } if ( ! ( n = consume_init_expr ( buf + i , buf + len , R_BIN_WASM_END_OF_CODE , NULL , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } ptr -> offset . len = n ; if ( ! ( consume_u32 ( buf + i , buf + len , & ptr -> size , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } ptr -> data = sec -> payload_data + i ; r_list_append ( ret , ptr ) ; r += 1 ; } return ret ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; ut32 len = sec -> payload_len ; <S2SV_ModStart> -> payload_data ; int buflen = bin -> buf -> length - ( ut32 ) sec -> payload_data <S2SV_ModEnd> ; ut32 count <S2SV_ModStart> i < len && len < buflen <S2SV_ModStart> ) ) { goto beach ; } if ( i + 4 >= buflen ) { goto beach <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto beach <S2SV_ModEnd> ; } ptr <S2SV_ModStart> ) ) { goto beach ; } if ( i + 4 >= buflen ) { goto beach <S2SV_ModEnd> ; } ptr <S2SV_ModStart> return ret ; beach : free ( ptr ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0546\n\n```\nCWE-000 static int list_table_status ( MYSQL * mysql , const char * db , const char * wild ) { <S2SV_StartBug> char query [ 1024 ] , * end ; <S2SV_EndBug> MYSQL_RES * result ; MYSQL_ROW row ; <S2SV_StartBug> end = strxmov ( query , \"show<S2SV_blank>table<S2SV_blank>status<S2SV_blank>from<S2SV_blank>`\" , db , \"`\" , NullS ) ; <S2SV_EndBug> <S2SV_StartBug> if ( wild && wild [ 0 ] ) <S2SV_EndBug> strxmov ( end , \"<S2SV_blank>like<S2SV_blank>\\'\" , wild , \"\\'\" , NullS ) ; if ( mysql_query ( mysql , query ) || ! ( result = mysql_store_result ( mysql ) ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>get<S2SV_blank>status<S2SV_blank>for<S2SV_blank>db:<S2SV_blank>%s,<S2SV_blank>table:<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , my_progname , db , wild ? wild : \"\" , mysql_error ( mysql ) ) ; if ( mysql_errno ( mysql ) == ER_PARSE_ERROR ) fprintf ( stderr , \"This<S2SV_blank>error<S2SV_blank>probably<S2SV_blank>means<S2SV_blank>that<S2SV_blank>your<S2SV_blank>MySQL<S2SV_blank>server<S2SV_blank>doesn\\'t<S2SV_blank>support<S2SV_blank>the\\\\n\\\\\\'show<S2SV_blank>table<S2SV_blank>status\\'<S2SV_blank>command.\\\\n\" ) ; return 1 ; } printf ( \"Database:<S2SV_blank>%s\" , db ) ; if ( wild ) printf ( \"<S2SV_blank><S2SV_blank>Wildcard:<S2SV_blank>%s\" , wild ) ; putchar ( '\\\\n' ) ; print_res_header ( result ) ; while ( ( row = mysql_fetch_row ( result ) ) ) print_res_row ( result , row ) ; print_res_top ( result ) ; mysql_free_result ( result ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char query [ NAME_LEN + 100 ] ; int len <S2SV_ModEnd> ; MYSQL_RES * <S2SV_ModStart> MYSQL_ROW row ; len = sizeof ( query ) ; len -= my_snprintf ( query , len , \"show<S2SV_blank>table<S2SV_blank>status<S2SV_blank>from<S2SV_blank>`%s`\" , db <S2SV_ModEnd> ) ; if <S2SV_ModStart> [ 0 ] && len ) strxnmov ( query + strlen ( query ) , len <S2SV_ModEnd> , \"<S2SV_blank>like<S2SV_blank>\\'\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9922\n\n```\nCWE-264 static int ovl_fill_super ( struct super_block * sb , void * data , int silent ) { struct path lowerpath ; struct path upperpath ; struct path workpath ; struct inode * root_inode ; struct dentry * root_dentry ; struct ovl_entry * oe ; struct ovl_fs * ufs ; struct kstatfs statfs ; int err ; err = - ENOMEM ; ufs = kzalloc ( sizeof ( struct ovl_fs ) , GFP_KERNEL ) ; if ( ! ufs ) goto out ; err = ovl_parse_opt ( ( char * ) data , & ufs -> config ) ; if ( err ) goto out_free_config ; err = - EINVAL ; if ( ! ufs -> config . upperdir || ! ufs -> config . lowerdir || ! ufs -> config . workdir ) { pr_err ( \"overlayfs:<S2SV_blank>missing<S2SV_blank>upperdir<S2SV_blank>or<S2SV_blank>lowerdir<S2SV_blank>or<S2SV_blank>workdir\\\\n\" ) ; goto out_free_config ; } err = - ENOMEM ; oe = ovl_alloc_entry ( ) ; if ( oe == NULL ) goto out_free_config ; err = ovl_mount_dir ( ufs -> config . upperdir , & upperpath ) ; if ( err ) goto out_free_oe ; err = ovl_mount_dir ( ufs -> config . lowerdir , & lowerpath ) ; if ( err ) goto out_put_upperpath ; err = ovl_mount_dir ( ufs -> config . workdir , & workpath ) ; if ( err ) goto out_put_lowerpath ; err = - EINVAL ; if ( ! S_ISDIR ( upperpath . dentry -> d_inode -> i_mode ) || ! S_ISDIR ( lowerpath . dentry -> d_inode -> i_mode ) || ! S_ISDIR ( workpath . dentry -> d_inode -> i_mode ) ) { pr_err ( \"overlayfs:<S2SV_blank>upperdir<S2SV_blank>or<S2SV_blank>lowerdir<S2SV_blank>or<S2SV_blank>workdir<S2SV_blank>not<S2SV_blank>a<S2SV_blank>directory\\\\n\" ) ; goto out_put_workpath ; } if ( upperpath . mnt != workpath . mnt ) { pr_err ( \"overlayfs:<S2SV_blank>workdir<S2SV_blank>and<S2SV_blank>upperdir<S2SV_blank>must<S2SV_blank>reside<S2SV_blank>under<S2SV_blank>the<S2SV_blank>same<S2SV_blank>mount\\\\n\" ) ; goto out_put_workpath ; } if ( ! ovl_workdir_ok ( workpath . dentry , upperpath . dentry ) ) { pr_err ( \"overlayfs:<S2SV_blank>workdir<S2SV_blank>and<S2SV_blank>upperdir<S2SV_blank>must<S2SV_blank>be<S2SV_blank>separate<S2SV_blank>subtrees\\\\n\" ) ; goto out_put_workpath ; } if ( ! ovl_is_allowed_fs_type ( upperpath . dentry ) ) { pr_err ( \"overlayfs:<S2SV_blank>filesystem<S2SV_blank>of<S2SV_blank>upperdir<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; goto out_put_workpath ; } if ( ! ovl_is_allowed_fs_type ( lowerpath . dentry ) ) { pr_err ( \"overlayfs:<S2SV_blank>filesystem<S2SV_blank>of<S2SV_blank>lowerdir<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; goto out_put_workpath ; } err = vfs_statfs ( & lowerpath , & statfs ) ; if ( err ) { pr_err ( \"overlayfs:<S2SV_blank>statfs<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>lowerpath\\\\n\" ) ; goto out_put_workpath ; } ufs -> lower_namelen = statfs . f_namelen ; <S2SV_StartBug> ufs -> upper_mnt = clone_private_mount ( & upperpath ) ; <S2SV_EndBug> err = PTR_ERR ( ufs -> upper_mnt ) ; if ( IS_ERR ( ufs -> upper_mnt ) ) { pr_err ( \"overlayfs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>clone<S2SV_blank>upperpath\\\\n\" ) ; goto out_put_workpath ; } ufs -> lower_mnt = clone_private_mount ( & lowerpath ) ; err = PTR_ERR ( ufs -> lower_mnt ) ; if ( IS_ERR ( ufs -> lower_mnt ) ) { pr_err ( \"overlayfs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>clone<S2SV_blank>lowerpath\\\\n\" ) ; goto out_put_upper_mnt ; } ufs -> workdir = ovl_workdir_create ( ufs -> upper_mnt , workpath . dentry ) ; err = PTR_ERR ( ufs -> workdir ) ; if ( IS_ERR ( ufs -> workdir ) ) { pr_err ( \"overlayfs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>directory<S2SV_blank>%s/%s\\\\n\" , ufs -> config . workdir , OVL_WORKDIR_NAME ) ; goto out_put_lower_mnt ; } ufs -> lower_mnt -> mnt_flags |= MNT_READONLY ; if ( ufs -> upper_mnt -> mnt_sb -> s_flags & MS_RDONLY ) sb -> s_flags |= MS_RDONLY ; sb -> s_d_op = & ovl_dentry_operations ; err = - ENOMEM ; root_inode = ovl_new_inode ( sb , S_IFDIR , oe ) ; if ( ! root_inode ) goto out_put_workdir ; root_dentry = d_make_root ( root_inode ) ; if ( ! root_dentry ) goto out_put_workdir ; mntput ( upperpath . mnt ) ; mntput ( lowerpath . mnt ) ; path_put ( & workpath ) ; oe -> __upperdentry = upperpath . dentry ; oe -> lowerdentry = lowerpath . dentry ; root_dentry -> d_fsdata = oe ; sb -> s_magic = OVERLAYFS_SUPER_MAGIC ; sb -> s_op = & ovl_super_operations ; sb -> s_root = root_dentry ; sb -> s_fs_info = ufs ; return 0 ; out_put_workdir : dput ( ufs -> workdir ) ; out_put_lower_mnt : mntput ( ufs -> lower_mnt ) ; out_put_upper_mnt : mntput ( ufs -> upper_mnt ) ; out_put_workpath : path_put ( & workpath ) ; out_put_lowerpath : path_put ( & lowerpath ) ; out_put_upperpath : path_put ( & upperpath ) ; out_free_oe : kfree ( oe ) ; out_free_config : kfree ( ufs -> config . lowerdir ) ; kfree ( ufs -> config . upperdir ) ; kfree ( ufs -> config . workdir ) ; kfree ( ufs ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . f_namelen ; sb -> s_stack_depth = max ( upperpath . mnt -> mnt_sb -> s_stack_depth , lowerpath . mnt -> mnt_sb -> s_stack_depth ) + 1 ; err = - EINVAL ; if ( sb -> s_stack_depth > FILESYSTEM_MAX_STACK_DEPTH ) { pr_err ( \"overlayfs:<S2SV_blank>maximum<S2SV_blank>fs<S2SV_blank>stacking<S2SV_blank>depth<S2SV_blank>exceeded\\\\n\" ) ; goto out_put_workpath ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12904\n\n```\nCWE-000 static int handle_vmon ( struct kvm_vcpu * vcpu ) { int ret ; gpa_t vmptr ; struct page * page ; struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; const u64 VMXON_NEEDED_FEATURES = FEATURE_CONTROL_LOCKED | FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX ; <S2SV_StartBug> if ( ! kvm_read_cr4_bits ( vcpu , X86_CR4_VMXE ) ) { <S2SV_EndBug> kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } if ( vmx -> nested . vmxon ) { nested_vmx_failValid ( vcpu , VMXERR_VMXON_IN_VMX_ROOT_OPERATION ) ; return kvm_skip_emulated_instruction ( vcpu ) ; } if ( ( vmx -> msr_ia32_feature_control & VMXON_NEEDED_FEATURES ) != VMXON_NEEDED_FEATURES ) { kvm_inject_gp ( vcpu , 0 ) ; return 1 ; } if ( nested_vmx_get_vmptr ( vcpu , & vmptr ) ) return 1 ; if ( ! PAGE_ALIGNED ( vmptr ) || ( vmptr >> cpuid_maxphyaddr ( vcpu ) ) ) { nested_vmx_failInvalid ( vcpu ) ; return kvm_skip_emulated_instruction ( vcpu ) ; } page = kvm_vcpu_gpa_to_page ( vcpu , vmptr ) ; if ( is_error_page ( page ) ) { nested_vmx_failInvalid ( vcpu ) ; return kvm_skip_emulated_instruction ( vcpu ) ; } if ( * ( u32 * ) kmap ( page ) != VMCS12_REVISION ) { kunmap ( page ) ; kvm_release_page_clean ( page ) ; nested_vmx_failInvalid ( vcpu ) ; return kvm_skip_emulated_instruction ( vcpu ) ; } kunmap ( page ) ; kvm_release_page_clean ( page ) ; vmx -> nested . vmxon_ptr = vmptr ; ret = enter_vmx_operation ( vcpu ) ; if ( ret ) return ret ; nested_vmx_succeed ( vcpu ) ; return kvm_skip_emulated_instruction ( vcpu ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu , X86_CR4_VMXE ) ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } if ( vmx_get_cpl ( vcpu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-255(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20839\n\n```\nCWE-255 static int verify_source_vc ( char * * ret_path , const char * src_vc ) { _cleanup_close_ int fd = - 1 ; char * path ; int r ; fd = open_terminal ( src_vc , O_RDWR | O_CLOEXEC | O_NOCTTY ) ; if ( fd < 0 ) return log_error_errno ( fd , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s:<S2SV_blank>%m\" , src_vc ) ; r = verify_vc_device ( fd ) ; if ( r < 0 ) return log_error_errno ( r , \"Device<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>virtual<S2SV_blank>console:<S2SV_blank>%m\" , src_vc ) ; r = verify_vc_allocation_byfd ( fd ) ; if ( r < 0 ) return log_error_errno ( r , \"Virtual<S2SV_blank>console<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allocated:<S2SV_blank>%m\" , src_vc ) ; <S2SV_StartBug> r = verify_vc_kbmode ( fd ) ; <S2SV_EndBug> if ( r < 0 ) return log_error_errno ( r , \"Virtual<S2SV_blank>console<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>K_XLATE<S2SV_blank>or<S2SV_blank>K_UNICODE:<S2SV_blank>%m\" , src_vc ) ; path = strdup ( src_vc ) ; if ( ! path ) return log_oom ( ) ; * ret_path = path ; return TAKE_FD ( fd ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; r = vt_verify_kbmode <S2SV_ModEnd> ( fd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13037\n\n```\nCWE-125 <S2SV_StartBug> static void <S2SV_EndBug> ip_printts ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register u_int ptr ; register u_int len ; int hoplen ; const char * type ; if ( length < 4 ) { ND_PRINT ( ( ndo , \"[bad<S2SV_blank>length<S2SV_blank>%u]\" , length ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } ND_PRINT ( ( ndo , \"<S2SV_blank>TS{\" ) ) ; hoplen = ( ( cp [ 3 ] & 0xF ) != IPOPT_TS_TSONLY ) ? 8 : 4 ; if ( ( length - 4 ) & ( hoplen - 1 ) ) ND_PRINT ( ( ndo , \"[bad<S2SV_blank>length<S2SV_blank>%u]\" , length ) ) ; <S2SV_StartBug> ptr = cp [ 2 ] - 1 ; <S2SV_EndBug> len = 0 ; if ( ptr < 4 || ( ( ptr - 4 ) & ( hoplen - 1 ) ) || ptr > length + 1 ) ND_PRINT ( ( ndo , \"[bad<S2SV_blank>ptr<S2SV_blank>%u]\" , cp [ 2 ] ) ) ; <S2SV_StartBug> switch ( cp [ 3 ] & 0xF ) { <S2SV_EndBug> case IPOPT_TS_TSONLY : ND_PRINT ( ( ndo , \"TSONLY\" ) ) ; break ; case IPOPT_TS_TSANDADDR : ND_PRINT ( ( ndo , \"TS+ADDR\" ) ) ; break ; case 2 : ND_PRINT ( ( ndo , \"PRESPEC2.0\" ) ) ; break ; case 3 : ND_PRINT ( ( ndo , \"PRESPEC\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"[bad<S2SV_blank>ts<S2SV_blank>type<S2SV_blank>%d]\" , cp [ 3 ] & 0xF ) ) ; goto done ; } type = \"<S2SV_blank>\" ; for ( len = 4 ; len < length ; len += hoplen ) { if ( ptr == len ) <S2SV_StartBug> type = \"<S2SV_blank>^<S2SV_blank>\" ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s%d@%s\" , type , EXTRACT_32BITS ( & cp [ len + hoplen - 4 ] ) , hoplen != 8 ? \"\" : ipaddr_string ( ndo , & cp [ len ] ) ) ) ; type = \"<S2SV_blank>\" ; } done : ND_PRINT ( ( ndo , \"%s\" , ptr == len ? \"<S2SV_blank>^<S2SV_blank>\" : \"\" ) ) ; if ( cp [ 3 ] >> 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>[%d<S2SV_blank>hops<S2SV_blank>not<S2SV_blank>recorded]}<S2SV_blank>\" , cp [ 3 ] >> 4 ) ) ; else ND_PRINT ( ( ndo , \"}\" ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> ip_printts ( netdissect_options <S2SV_ModStart> ) ; return ( 0 ) <S2SV_ModStart> ) ) ; ND_TCHECK ( cp [ 2 ] ) ; <S2SV_ModStart> ) ) ; ND_TCHECK ( cp [ 3 ] ) ; <S2SV_ModStart> type = \"<S2SV_blank>^<S2SV_blank>\" ; ND_TCHECK2 ( cp [ len ] , hoplen ) <S2SV_ModStart> ) ) ; return ( 0 ) ; trunc : return ( - 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3212\n\n```\nCWE-362 static void sctp_close ( struct sock * sk , long timeout ) { struct net * net = sock_net ( sk ) ; struct sctp_endpoint * ep ; struct sctp_association * asoc ; struct list_head * pos , * temp ; unsigned int data_was_unread ; pr_debug ( \"%s:<S2SV_blank>sk:%p,<S2SV_blank>timeout:%ld\\\\n\" , __func__ , sk , timeout ) ; lock_sock ( sk ) ; sk -> sk_shutdown = SHUTDOWN_MASK ; sk -> sk_state = SCTP_SS_CLOSING ; ep = sctp_sk ( sk ) -> ep ; data_was_unread = sctp_queue_purge_ulpevents ( & sk -> sk_receive_queue ) ; data_was_unread += sctp_queue_purge_ulpevents ( & sctp_sk ( sk ) -> pd_lobby ) ; list_for_each_safe ( pos , temp , & ep -> asocs ) { asoc = list_entry ( pos , struct sctp_association , asocs ) ; if ( sctp_style ( sk , TCP ) ) { if ( sctp_state ( asoc , CLOSED ) ) { sctp_unhash_established ( asoc ) ; sctp_association_free ( asoc ) ; continue ; } } if ( data_was_unread || ! skb_queue_empty ( & asoc -> ulpq . lobby ) || ! skb_queue_empty ( & asoc -> ulpq . reasm ) || ( sock_flag ( sk , SOCK_LINGER ) && ! sk -> sk_lingertime ) ) { struct sctp_chunk * chunk ; chunk = sctp_make_abort_user ( asoc , NULL , 0 ) ; if ( chunk ) sctp_primitive_ABORT ( net , asoc , chunk ) ; } else sctp_primitive_SHUTDOWN ( net , asoc , NULL ) ; } if ( sctp_style ( sk , TCP ) && timeout ) sctp_wait_for_close ( sk , timeout ) ; release_sock ( sk ) ; <S2SV_StartBug> local_bh_disable ( ) ; <S2SV_EndBug> bh_lock_sock ( sk ) ; sock_hold ( sk ) ; sk_common_release ( sk ) ; bh_unlock_sock ( sk ) ; <S2SV_StartBug> local_bh_enable ( ) ; <S2SV_EndBug> sock_put ( sk ) ; SCTP_DBG_OBJCNT_DEC ( sock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk ) ; spin_lock_bh ( & net -> sctp . addr_wq_lock <S2SV_ModEnd> ) ; bh_lock_sock <S2SV_ModStart> sk ) ; spin_unlock_bh ( & net -> sctp . addr_wq_lock <S2SV_ModEnd> ) ; sock_put\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0716\n\n```\nCWE-399 static int br_multicast_add_group ( struct net_bridge * br , struct net_bridge_port * port , struct br_ip * group ) { struct net_bridge_mdb_entry * mp ; struct net_bridge_port_group * p ; struct net_bridge_port_group __rcu * * pp ; unsigned long now = jiffies ; int err ; spin_lock ( & br -> multicast_lock ) ; if ( ! netif_running ( br -> dev ) || ( port && port -> state == BR_STATE_DISABLED ) ) goto out ; mp = br_multicast_new_group ( br , port , group ) ; err = PTR_ERR ( mp ) ; if ( IS_ERR ( mp ) ) goto err ; if ( ! port ) { <S2SV_StartBug> hlist_add_head ( & mp -> mglist , & br -> mglist ) ; <S2SV_EndBug> mod_timer ( & mp -> timer , now + br -> multicast_membership_interval ) ; goto out ; } for ( pp = & mp -> ports ; ( p = mlock_dereference ( * pp , br ) ) != NULL ; pp = & p -> next ) { if ( p -> port == port ) goto found ; if ( ( unsigned long ) p -> port < ( unsigned long ) port ) break ; } p = kzalloc ( sizeof ( * p ) , GFP_ATOMIC ) ; err = - ENOMEM ; if ( unlikely ( ! p ) ) goto err ; p -> addr = * group ; p -> port = port ; p -> next = * pp ; hlist_add_head ( & p -> mglist , & port -> mglist ) ; setup_timer ( & p -> timer , br_multicast_port_group_expired , ( unsigned long ) p ) ; setup_timer ( & p -> query_timer , br_multicast_port_group_query_expired , ( unsigned long ) p ) ; rcu_assign_pointer ( * pp , p ) ; found : mod_timer ( & p -> timer , now + br -> multicast_membership_interval ) ; out : err = 0 ; err : spin_unlock ( & br -> multicast_lock ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> port ) { if ( hlist_unhashed ( & mp -> mglist ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20786\n\n```\nCWE-476 VTerm * vterm_new_with_allocator ( int rows , int cols , VTermAllocatorFunctions * funcs , void * allocdata ) { VTerm * vt = ( * funcs -> malloc ) ( sizeof ( VTerm ) , allocdata ) ; <S2SV_StartBug> vt -> allocator = funcs ; <S2SV_EndBug> vt -> allocdata = allocdata ; vt -> rows = rows ; vt -> cols = cols ; vt -> parser . state = NORMAL ; vt -> parser . callbacks = NULL ; vt -> parser . cbdata = NULL ; vt -> parser . strbuffer_len = 500 ; vt -> parser . strbuffer_cur = 0 ; vt -> parser . strbuffer = vterm_allocator_malloc ( vt , vt -> parser . strbuffer_len ) ; <S2SV_StartBug> vt -> outbuffer_len = 200 ; <S2SV_EndBug> vt -> outbuffer_cur = 0 ; <S2SV_StartBug> vt -> outbuffer = vterm_allocator_malloc ( vt , vt -> outbuffer_len ) ; <S2SV_EndBug> return vt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> allocdata ) ; if ( vt == NULL ) return NULL ; <S2SV_ModStart> strbuffer_len ) ; if ( vt -> parser . strbuffer == NULL ) { vterm_allocator_free ( vt , vt ) ; return NULL ; } <S2SV_ModStart> outbuffer_len ) ; if ( vt -> outbuffer == NULL ) { vterm_allocator_free ( vt , vt -> parser . strbuffer ) ; vterm_allocator_free ( vt , vt ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3638\n\n```\nCWE-000 static int ext4_split_unwritten_extents ( handle_t * handle , struct inode * inode , struct ext4_map_blocks * map , struct ext4_ext_path * path , int flags ) { <S2SV_StartBug> struct ext4_extent * ex , newex , orig_ex ; <S2SV_EndBug> struct ext4_extent * ex1 = NULL ; struct ext4_extent * ex2 = NULL ; struct ext4_extent * ex3 = NULL ; ext4_lblk_t ee_block , eof_block ; <S2SV_StartBug> unsigned int allocated , ee_len , depth ; <S2SV_EndBug> ext4_fsblk_t newblock ; int err = 0 ; int may_zeroout ; ext_debug ( \"ext4_split_unwritten_extents:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical\" \"block<S2SV_blank>%llu,<S2SV_blank>max_blocks<S2SV_blank>%u\\\\n\" , inode -> i_ino , ( unsigned long long ) map -> m_lblk , map -> m_len ) ; eof_block = ( inode -> i_size + inode -> i_sb -> s_blocksize - 1 ) >> inode -> i_sb -> s_blocksize_bits ; if ( eof_block < map -> m_lblk + map -> m_len ) eof_block = map -> m_lblk + map -> m_len ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; <S2SV_StartBug> allocated = ee_len - ( map -> m_lblk - ee_block ) ; <S2SV_EndBug> newblock = map -> m_lblk - ee_block + ext4_ext_pblock ( ex ) ; ex2 = ex ; orig_ex . ee_block = ex -> ee_block ; orig_ex . ee_len = cpu_to_le16 ( ee_len ) ; ext4_ext_store_pblock ( & orig_ex , ext4_ext_pblock ( ex ) ) ; <S2SV_StartBug> may_zeroout = ee_block + ee_len <= eof_block ; <S2SV_EndBug> if ( ( map -> m_lblk == ee_block ) && ( allocated <= map -> m_len ) ) return allocated ; <S2SV_StartBug> err = ext4_ext_get_access ( handle , inode , path + depth ) ; <S2SV_EndBug> if ( err ) goto out ; if ( map -> m_lblk > ee_block ) { ex1 = ex ; ex1 -> ee_len = cpu_to_le16 ( map -> m_lblk - ee_block ) ; ext4_ext_mark_uninitialized ( ex1 ) ; ex2 = & newex ; } if ( ! ex1 && allocated > map -> m_len ) ex2 -> ee_len = cpu_to_le16 ( map -> m_len ) ; if ( allocated > map -> m_len ) { unsigned int newdepth ; ex3 = & newex ; ex3 -> ee_block = cpu_to_le32 ( map -> m_lblk + map -> m_len ) ; ext4_ext_store_pblock ( ex3 , newblock + map -> m_len ) ; ex3 -> ee_len = cpu_to_le16 ( allocated - map -> m_len ) ; ext4_ext_mark_uninitialized ( ex3 ) ; <S2SV_StartBug> err = ext4_ext_insert_extent ( handle , inode , path , ex3 , flags ) ; <S2SV_EndBug> if ( err == - ENOSPC && may_zeroout ) { err = ext4_ext_zeroout ( inode , & orig_ex ) ; if ( err ) goto fix_extent_len ; ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return allocated ; } else if ( err ) goto fix_extent_len ; newdepth = ext_depth ( inode ) ; ee_len -= ext4_ext_get_actual_len ( ex3 ) ; orig_ex . ee_len = cpu_to_le16 ( ee_len ) ; may_zeroout = ee_block + ee_len <= eof_block ; depth = newdepth ; ext4_ext_drop_refs ( path ) ; path = ext4_ext_find_extent ( inode , map -> m_lblk , path ) ; if ( IS_ERR ( path ) ) { err = PTR_ERR ( path ) ; goto out ; } ex = path [ depth ] . p_ext ; if ( ex2 != & newex ) ex2 = ex ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto out ; allocated = map -> m_len ; } if ( ex1 && ex1 != ex ) { ex1 = ex ; ex1 -> ee_len = cpu_to_le16 ( map -> m_lblk - ee_block ) ; ext4_ext_mark_uninitialized ( ex1 ) ; ex2 = & newex ; } ex2 -> ee_block = cpu_to_le32 ( map -> m_lblk ) ; ext4_ext_store_pblock ( ex2 , newblock ) ; ex2 -> ee_len = cpu_to_le16 ( allocated ) ; ext4_ext_mark_uninitialized ( ex2 ) ; if ( ex2 != ex ) goto insert ; err = ext4_ext_dirty ( handle , inode , path + depth ) ; ext_debug ( \"out<S2SV_blank>here\\\\n\" ) ; goto out ; insert : err = ext4_ext_insert_extent ( handle , inode , path , & newex , flags ) ; if ( err == - ENOSPC && may_zeroout ) { err = ext4_ext_zeroout ( inode , & orig_ex ) ; if ( err ) goto fix_extent_len ; ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return allocated ; } else if ( err ) goto fix_extent_len ; out : ext4_ext_show_leaf ( inode , path ) ; return err ? err : allocated ; fix_extent_len : ex -> ee_block = orig_ex . ee_block ; ex -> ee_len = orig_ex . ee_len ; ext4_ext_store_pblock ( ex , ext4_ext_pblock ( & orig_ex ) ) ; ext4_ext_mark_uninitialized ( ex ) ; ext4_ext_dirty ( handle , inode , path + depth ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flags ) { ext4_lblk_t eof_block ; ext4_lblk_t ee_block ; <S2SV_ModStart> ext4_extent * ex <S2SV_ModEnd> ; unsigned int <S2SV_ModStart> ; unsigned int ee_len ; int split_flag = 0 , depth <S2SV_ModEnd> ; ext_debug ( <S2SV_ModStart> ex ) ; split_flag |= <S2SV_ModEnd> ee_block + ee_len <S2SV_ModStart> ee_len <= eof_block ? EXT4_EXT_MAY_ZEROOUT : 0 ; split_flag |= EXT4_EXT_MARK_UNINIT2 ; flags |= EXT4_GET_BLOCKS_PRE_IO ; return ext4_split_extent <S2SV_ModEnd> ( handle , <S2SV_ModStart> inode , path , map , split_flag <S2SV_ModEnd> , flags ) <S2SV_ModStart> , flags ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 static unsigned int do_encrypt ( const RIJNDAEL_context * ctx , unsigned char * bx , const unsigned char * ax ) { # ifdef USE_AMD64_ASM return _gcry_aes_amd64_encrypt_block ( ctx -> keyschenc , bx , ax , ctx -> rounds , <S2SV_StartBug> encT ) ; <S2SV_EndBug> # elif defined ( USE_ARM_ASM ) <S2SV_StartBug> return _gcry_aes_arm_encrypt_block ( ctx -> keyschenc , bx , ax , ctx -> rounds , encT ) ; <S2SV_EndBug> # else return do_encrypt_fn ( ctx , bx , ax ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rounds , enc_tables . T <S2SV_ModEnd> ) ; # <S2SV_ModStart> -> rounds , enc_tables . T <S2SV_ModEnd> ) ; #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_find_best_sub_pixel_step ( MACROBLOCK * x , BLOCK * b , BLOCKD * d , int_mv * bestmv , int_mv * ref_mv , int error_per_bit , const vp8_variance_fn_ptr_t * vfp , int * mvcost [ 2 ] , int * distortion , unsigned int * sse1 ) { int bestmse = INT_MAX ; int_mv startmv ; int_mv this_mv ; unsigned char * z = ( * ( b -> base_src ) + b -> src ) ; int left , right , up , down , diag ; unsigned int sse ; int whichdir ; int thismse ; int y_stride ; int pre_stride = x -> e_mbd . pre . y_stride ; unsigned char * base_pre = x -> e_mbd . pre . y_buffer ; # if ARCH_X86 || ARCH_X86_64 MACROBLOCKD * xd = & x -> e_mbd ; unsigned char * y_0 = base_pre + d -> offset + ( bestmv -> as_mv . row ) * pre_stride + bestmv -> as_mv . col ; unsigned char * y ; y_stride = 32 ; vfp -> copymem ( y_0 - 1 - pre_stride , pre_stride , xd -> y_buf , y_stride , 18 ) ; y = xd -> y_buf + y_stride + 1 ; # else unsigned char * y = base_pre + d -> offset + ( bestmv -> as_mv . row ) * pre_stride + bestmv -> as_mv . col ; y_stride = pre_stride ; # endif <S2SV_StartBug> bestmv -> as_mv . row <<= 3 ; <S2SV_EndBug> <S2SV_StartBug> bestmv -> as_mv . col <<= 3 ; <S2SV_EndBug> startmv = * bestmv ; bestmse = vfp -> vf ( y , y_stride , z , b -> src_stride , sse1 ) ; * distortion = bestmse ; bestmse += mv_err_cost ( bestmv , ref_mv , mvcost , error_per_bit ) ; this_mv . as_mv . row = startmv . as_mv . row ; this_mv . as_mv . col = ( ( startmv . as_mv . col - 8 ) | 4 ) ; thismse = vfp -> svf_halfpix_h ( y - 1 , y_stride , z , b -> src_stride , & sse ) ; left = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( left < bestmse ) { * bestmv = this_mv ; bestmse = left ; * distortion = thismse ; * sse1 = sse ; } this_mv . as_mv . col += 8 ; thismse = vfp -> svf_halfpix_h ( y , y_stride , z , b -> src_stride , & sse ) ; right = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( right < bestmse ) { * bestmv = this_mv ; bestmse = right ; * distortion = thismse ; * sse1 = sse ; } this_mv . as_mv . col = startmv . as_mv . col ; this_mv . as_mv . row = ( ( startmv . as_mv . row - 8 ) | 4 ) ; thismse = vfp -> svf_halfpix_v ( y - y_stride , y_stride , z , b -> src_stride , & sse ) ; up = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( up < bestmse ) { * bestmv = this_mv ; bestmse = up ; * distortion = thismse ; * sse1 = sse ; } this_mv . as_mv . row += 8 ; thismse = vfp -> svf_halfpix_v ( y , y_stride , z , b -> src_stride , & sse ) ; down = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( down < bestmse ) { * bestmv = this_mv ; bestmse = down ; * distortion = thismse ; * sse1 = sse ; } whichdir = ( left < right ? 0 : 1 ) + ( up < down ? 0 : 2 ) ; this_mv = startmv ; switch ( whichdir ) { case 0 : this_mv . as_mv . col = ( this_mv . as_mv . col - 8 ) | 4 ; this_mv . as_mv . row = ( this_mv . as_mv . row - 8 ) | 4 ; thismse = vfp -> svf_halfpix_hv ( y - 1 - y_stride , y_stride , z , b -> src_stride , & sse ) ; break ; case 1 : this_mv . as_mv . col += 4 ; this_mv . as_mv . row = ( this_mv . as_mv . row - 8 ) | 4 ; thismse = vfp -> svf_halfpix_hv ( y - y_stride , y_stride , z , b -> src_stride , & sse ) ; break ; case 2 : this_mv . as_mv . col = ( this_mv . as_mv . col - 8 ) | 4 ; this_mv . as_mv . row += 4 ; thismse = vfp -> svf_halfpix_hv ( y - 1 , y_stride , z , b -> src_stride , & sse ) ; break ; case 3 : default : this_mv . as_mv . col += 4 ; this_mv . as_mv . row += 4 ; thismse = vfp -> svf_halfpix_hv ( y , y_stride , z , b -> src_stride , & sse ) ; break ; } diag = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( diag < bestmse ) { * bestmv = this_mv ; bestmse = diag ; * distortion = thismse ; * sse1 = sse ; } if ( bestmv -> as_mv . row < startmv . as_mv . row ) y -= y_stride ; if ( bestmv -> as_mv . col < startmv . as_mv . col ) y -- ; startmv = * bestmv ; this_mv . as_mv . row = startmv . as_mv . row ; if ( startmv . as_mv . col & 7 ) { this_mv . as_mv . col = startmv . as_mv . col - 2 ; thismse = vfp -> svf ( y , y_stride , this_mv . as_mv . col & 7 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; } else { this_mv . as_mv . col = ( startmv . as_mv . col - 8 ) | 6 ; thismse = vfp -> svf ( y - 1 , y_stride , 6 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; } left = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( left < bestmse ) { * bestmv = this_mv ; bestmse = left ; * distortion = thismse ; * sse1 = sse ; } this_mv . as_mv . col += 4 ; thismse = vfp -> svf ( y , y_stride , this_mv . as_mv . col & 7 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; right = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( right < bestmse ) { * bestmv = this_mv ; bestmse = right ; * distortion = thismse ; * sse1 = sse ; } this_mv . as_mv . col = startmv . as_mv . col ; if ( startmv . as_mv . row & 7 ) { this_mv . as_mv . row = startmv . as_mv . row - 2 ; thismse = vfp -> svf ( y , y_stride , this_mv . as_mv . col & 7 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; } else { this_mv . as_mv . row = ( startmv . as_mv . row - 8 ) | 6 ; thismse = vfp -> svf ( y - y_stride , y_stride , this_mv . as_mv . col & 7 , 6 , z , b -> src_stride , & sse ) ; } up = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( up < bestmse ) { * bestmv = this_mv ; bestmse = up ; * distortion = thismse ; * sse1 = sse ; } this_mv . as_mv . row += 4 ; thismse = vfp -> svf ( y , y_stride , this_mv . as_mv . col & 7 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; down = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( down < bestmse ) { * bestmv = this_mv ; bestmse = down ; * distortion = thismse ; * sse1 = sse ; } whichdir = ( left < right ? 0 : 1 ) + ( up < down ? 0 : 2 ) ; this_mv = startmv ; switch ( whichdir ) { case 0 : if ( startmv . as_mv . row & 7 ) { this_mv . as_mv . row -= 2 ; if ( startmv . as_mv . col & 7 ) { this_mv . as_mv . col -= 2 ; thismse = vfp -> svf ( y , y_stride , this_mv . as_mv . col & 7 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; } else { this_mv . as_mv . col = ( startmv . as_mv . col - 8 ) | 6 ; thismse = vfp -> svf ( y - 1 , y_stride , 6 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; ; } } else { this_mv . as_mv . row = ( startmv . as_mv . row - 8 ) | 6 ; if ( startmv . as_mv . col & 7 ) { this_mv . as_mv . col -= 2 ; thismse = vfp -> svf ( y - y_stride , y_stride , this_mv . as_mv . col & 7 , 6 , z , b -> src_stride , & sse ) ; } else { this_mv . as_mv . col = ( startmv . as_mv . col - 8 ) | 6 ; thismse = vfp -> svf ( y - y_stride - 1 , y_stride , 6 , 6 , z , b -> src_stride , & sse ) ; } } break ; case 1 : this_mv . as_mv . col += 2 ; if ( startmv . as_mv . row & 7 ) { this_mv . as_mv . row -= 2 ; thismse = vfp -> svf ( y , y_stride , this_mv . as_mv . col & 7 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; } else { this_mv . as_mv . row = ( startmv . as_mv . row - 8 ) | 6 ; thismse = vfp -> svf ( y - y_stride , y_stride , this_mv . as_mv . col & 7 , 6 , z , b -> src_stride , & sse ) ; } break ; case 2 : this_mv . as_mv . row += 2 ; if ( startmv . as_mv . col & 7 ) { this_mv . as_mv . col -= 2 ; thismse = vfp -> svf ( y , y_stride , this_mv . as_mv . col & 7 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; } else { this_mv . as_mv . col = ( startmv . as_mv . col - 8 ) | 6 ; thismse = vfp -> svf ( y - 1 , y_stride , 6 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; } break ; case 3 : this_mv . as_mv . col += 2 ; this_mv . as_mv . row += 2 ; thismse = vfp -> svf ( y , y_stride , this_mv . as_mv . col & 7 , this_mv . as_mv . row & 7 , z , b -> src_stride , & sse ) ; break ; } diag = thismse + mv_err_cost ( & this_mv , ref_mv , mvcost , error_per_bit ) ; if ( diag < bestmse ) { * bestmv = this_mv ; bestmse = diag ; * distortion = thismse ; * sse1 = sse ; } return bestmse ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> as_mv . row *= 8 <S2SV_ModEnd> ; bestmv -> <S2SV_ModStart> as_mv . col *= 8 <S2SV_ModEnd> ; startmv =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 static void show_object ( struct object * obj , <S2SV_StartBug> struct strbuf * path , const char * component , <S2SV_EndBug> void * cb_data ) { struct rev_list_info * info = cb_data ; <S2SV_StartBug> finish_object ( obj , path , component , cb_data ) ; <S2SV_EndBug> if ( info -> flags & REV_LIST_QUIET ) return ; <S2SV_StartBug> show_object_with_name ( stdout , obj , path , component ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void * <S2SV_ModStart> ( obj , name <S2SV_ModEnd> , cb_data ) <S2SV_ModStart> , obj , name <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1465\n\n```\nCWE-17 static int rt_fill_info ( struct net * net , __be32 dst , __be32 src , struct flowi4 * fl4 , struct sk_buff * skb , u32 portid , u32 seq , int event , int nowait , unsigned int flags ) { struct rtable * rt = skb_rtable ( skb ) ; struct rtmsg * r ; struct nlmsghdr * nlh ; unsigned long expires = 0 ; u32 error ; u32 metrics [ RTAX_MAX ] ; nlh = nlmsg_put ( skb , portid , seq , event , sizeof ( * r ) , flags ) ; if ( nlh == NULL ) return - EMSGSIZE ; r = nlmsg_data ( nlh ) ; r -> rtm_family = AF_INET ; r -> rtm_dst_len = 32 ; r -> rtm_src_len = 0 ; r -> rtm_tos = fl4 -> flowi4_tos ; r -> rtm_table = RT_TABLE_MAIN ; if ( nla_put_u32 ( skb , RTA_TABLE , RT_TABLE_MAIN ) ) goto nla_put_failure ; r -> rtm_type = rt -> rt_type ; r -> rtm_scope = RT_SCOPE_UNIVERSE ; r -> rtm_protocol = RTPROT_UNSPEC ; r -> rtm_flags = ( rt -> rt_flags & ~ 0xFFFF ) | RTM_F_CLONED ; if ( rt -> rt_flags & RTCF_NOTIFY ) <S2SV_StartBug> r -> rtm_flags |= RTM_F_NOTIFY ; <S2SV_EndBug> if ( nla_put_be32 ( skb , RTA_DST , dst ) ) goto nla_put_failure ; if ( src ) { r -> rtm_src_len = 32 ; if ( nla_put_be32 ( skb , RTA_SRC , src ) ) goto nla_put_failure ; } if ( rt -> dst . dev && nla_put_u32 ( skb , RTA_OIF , rt -> dst . dev -> ifindex ) ) goto nla_put_failure ; # ifdef CONFIG_IP_ROUTE_CLASSID if ( rt -> dst . tclassid && nla_put_u32 ( skb , RTA_FLOW , rt -> dst . tclassid ) ) goto nla_put_failure ; # endif if ( ! rt_is_input_route ( rt ) && fl4 -> saddr != src ) { if ( nla_put_be32 ( skb , RTA_PREFSRC , fl4 -> saddr ) ) goto nla_put_failure ; } if ( rt -> rt_uses_gateway && nla_put_be32 ( skb , RTA_GATEWAY , rt -> rt_gateway ) ) goto nla_put_failure ; expires = rt -> dst . expires ; if ( expires ) { unsigned long now = jiffies ; if ( time_before ( now , expires ) ) expires -= now ; else expires = 0 ; } memcpy ( metrics , dst_metrics_ptr ( & rt -> dst ) , sizeof ( metrics ) ) ; if ( rt -> rt_pmtu && expires ) metrics [ RTAX_MTU - 1 ] = rt -> rt_pmtu ; if ( rtnetlink_put_metrics ( skb , metrics ) < 0 ) goto nla_put_failure ; if ( fl4 -> flowi4_mark && nla_put_u32 ( skb , RTA_MARK , fl4 -> flowi4_mark ) ) goto nla_put_failure ; error = rt -> dst . error ; if ( rt_is_input_route ( rt ) ) { # ifdef CONFIG_IP_MROUTE if ( ipv4_is_multicast ( dst ) && ! ipv4_is_local_multicast ( dst ) && IPV4_DEVCONF_ALL ( net , MC_FORWARDING ) ) { int err = ipmr_get_route ( net , skb , fl4 -> saddr , fl4 -> daddr , r , nowait ) ; if ( err <= 0 ) { if ( ! nowait ) { if ( err == 0 ) return 0 ; goto nla_put_failure ; } else { if ( err == - EMSGSIZE ) goto nla_put_failure ; error = err ; } } } else # endif if ( nla_put_u32 ( skb , RTA_IIF , skb -> dev -> ifindex ) ) goto nla_put_failure ; } if ( rtnl_put_cacheinfo ( skb , & rt -> dst , 0 , expires , error ) < 0 ) goto nla_put_failure ; return nlmsg_end ( skb , nlh ) ; nla_put_failure : nlmsg_cancel ( skb , nlh ) ; return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rtm_flags |= RTM_F_NOTIFY ; if ( IPCB ( skb ) -> flags & IPSKB_DOREDIRECT ) r -> rtm_flags |= RTCF_DOREDIRECT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7041\n\n```\nCWE-295 static int ssl_verify_cert ( struct tunnel * tunnel ) { int ret = - 1 ; int cert_valid = 0 ; unsigned char digest [ SHA256LEN ] ; unsigned int len ; struct x509_digest * elem ; char digest_str [ SHA256STRLEN ] , * subject , * issuer ; char * line ; int i ; X509_NAME * subj ; char common_name [ FIELD_SIZE + 1 ] ; SSL_set_verify ( tunnel -> ssl_handle , SSL_VERIFY_PEER , NULL ) ; X509 * cert = SSL_get_peer_certificate ( tunnel -> ssl_handle ) ; if ( cert == NULL ) { log_error ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>gateway<S2SV_blank>certificate.\\\\n\" ) ; return 1 ; } subj = X509_get_subject_name ( cert ) ; # ifdef HAVE_X509_CHECK_HOST <S2SV_StartBug> if ( X509_check_host ( cert , common_name , FIELD_SIZE , 0 , NULL ) ) <S2SV_EndBug> cert_valid = 1 ; # else if ( subj && X509_NAME_get_text_by_NID ( subj , NID_commonName , common_name , FIELD_SIZE ) > 0 && strncasecmp ( common_name , tunnel -> config -> gateway_host , FIELD_SIZE ) == 0 ) cert_valid = 1 ; # endif if ( cert_valid && SSL_get_verify_result ( tunnel -> ssl_handle ) == X509_V_OK ) { log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>succeeded.\\\\n\" ) ; ret = 0 ; goto free_cert ; } log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>failed.\\\\n\" ) ; if ( X509_digest ( cert , EVP_sha256 ( ) , digest , & len ) <= 0 || len != SHA256LEN ) { log_error ( \"Could<S2SV_blank>not<S2SV_blank>compute<S2SV_blank>certificate<S2SV_blank>sha256<S2SV_blank>digest.\\\\n\" ) ; goto free_cert ; } for ( i = 0 ; i < SHA256LEN ; i ++ ) sprintf ( & digest_str [ 2 * i ] , \"%02x\" , digest [ i ] ) ; digest_str [ SHA256STRLEN - 1 ] = '\\\\0' ; for ( elem = tunnel -> config -> cert_whitelist ; elem != NULL ; elem = elem -> next ) if ( memcmp ( digest_str , elem -> data , SHA256STRLEN - 1 ) == 0 ) break ; if ( elem != NULL ) { log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>digest<S2SV_blank>found<S2SV_blank>in<S2SV_blank>white<S2SV_blank>list.\\\\n\" ) ; ret = 0 ; goto free_cert ; } subject = X509_NAME_oneline ( subj , NULL , 0 ) ; issuer = X509_NAME_oneline ( X509_get_issuer_name ( cert ) , NULL , 0 ) ; log_error ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>failed,<S2SV_blank>and<S2SV_blank>the<S2SV_blank>certificate<S2SV_blank>digest<S2SV_blank>in<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>local<S2SV_blank>whitelist.<S2SV_blank>If<S2SV_blank>you<S2SV_blank>trust<S2SV_blank>it,<S2SV_blank>rerun<S2SV_blank>with:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--trusted-cert<S2SV_blank>%s\\\\n\" , digest_str ) ; log_error ( \"or<S2SV_blank>add<S2SV_blank>this<S2SV_blank>line<S2SV_blank>to<S2SV_blank>your<S2SV_blank>config<S2SV_blank>file:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>trusted-cert<S2SV_blank>=<S2SV_blank>%s\\\\n\" , digest_str ) ; log_error ( \"Gateway<S2SV_blank>certificate:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>subject:\\\\n\" ) ; for ( line = strtok ( subject , \"/\" ) ; line != NULL ; line = strtok ( NULL , \"/\" ) ) log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , line ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>issuer:\\\\n\" ) ; for ( line = strtok ( issuer , \"/\" ) ; line != NULL ; line = strtok ( NULL , \"/\" ) ) log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , line ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>sha256<S2SV_blank>digest:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , digest_str ) ; free_cert : X509_free ( cert ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , NULL ) == 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 <S2SV_StartBug> static inline bool unconditional ( const struct ipt_ip * ip ) <S2SV_EndBug> { static const struct ipt_ip uncond ; <S2SV_StartBug> return memcmp ( ip , & uncond , sizeof ( uncond ) ) == 0 ; <S2SV_EndBug> # undef FWINV }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( const struct ipt_entry * e <S2SV_ModEnd> ) { static <S2SV_ModStart> uncond ; return e -> target_offset == sizeof ( struct ipt_entry ) && memcmp ( & e -> <S2SV_ModEnd> ip , &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9990\n\n```\nCWE-119 static av_cold int xpm_decode_close ( AVCodecContext * avctx ) { XPMDecContext * x = avctx -> priv_data ; av_freep ( & x -> pixels ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pixels ) ; av_freep ( & x -> buf ) ; x -> buf_size = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 void jiffies_to_timeval ( const unsigned long jiffies , struct timeval * value ) { <S2SV_StartBug> u64 nsec = ( u64 ) jiffies * TICK_NSEC ; <S2SV_EndBug> long tv_usec ; <S2SV_StartBug> value -> tv_sec = div_long_long_rem ( nsec , NSEC_PER_SEC , & tv_usec ) ; <S2SV_EndBug> tv_usec /= NSEC_PER_USEC ; <S2SV_StartBug> value -> tv_usec = tv_usec ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) { u32 rem ; value -> tv_sec = div_u64_rem ( <S2SV_ModEnd> ( u64 ) <S2SV_ModStart> jiffies * TICK_NSEC , <S2SV_ModEnd> NSEC_PER_SEC , & <S2SV_ModStart> NSEC_PER_SEC , & rem ) <S2SV_ModEnd> ; value -> <S2SV_ModStart> -> tv_usec = rem / NSEC_PER_USEC <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8964\n\n```\nCWE-200 static void tty_set_termios_ldisc ( struct tty_struct * tty , int num ) { down_write ( & tty -> termios_rwsem ) ; tty -> termios . c_line = num ; up_write ( & tty -> termios_rwsem ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> termios_rwsem ) ; tty -> disc_data = NULL ; tty -> receive_room = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18241\n\n```\nCWE-476 int create_flush_cmd_control ( struct f2fs_sb_info * sbi ) { dev_t dev = sbi -> sb -> s_bdev -> bd_dev ; struct flush_cmd_control * fcc ; int err = 0 ; if ( SM_I ( sbi ) -> fcc_info ) { fcc = SM_I ( sbi ) -> fcc_info ; goto init_thread ; } fcc = kzalloc ( sizeof ( struct flush_cmd_control ) , GFP_KERNEL ) ; if ( ! fcc ) return - ENOMEM ; atomic_set ( & fcc -> issued_flush , 0 ) ; atomic_set ( & fcc -> issing_flush , 0 ) ; init_waitqueue_head ( & fcc -> flush_wait_queue ) ; init_llist_head ( & fcc -> issue_list ) ; SM_I ( sbi ) -> fcc_info = fcc ; <S2SV_StartBug> init_thread : <S2SV_EndBug> fcc -> f2fs_issue_flush = kthread_run ( issue_flush_thread , sbi , \"f2fs_flush-%u:%u\" , MAJOR ( dev ) , MINOR ( dev ) ) ; if ( IS_ERR ( fcc -> f2fs_issue_flush ) ) { err = PTR_ERR ( fcc -> f2fs_issue_flush ) ; kfree ( fcc ) ; SM_I ( sbi ) -> fcc_info = NULL ; return err ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = fcc ; if ( ! test_opt ( sbi , FLUSH_MERGE ) ) return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6560\n\n```\nCWE-436 static gboolean side_in_cb ( GSocket * socket , GIOCondition condition , gpointer user_data ) { ProxySide * side = user_data ; FlatpakProxyClient * client = side -> client ; GError * error = NULL ; Buffer * buffer ; gboolean retval = G_SOURCE_CONTINUE ; g_object_ref ( client ) ; while ( ! side -> closed ) { if ( ! side -> got_first_byte ) buffer = buffer_new ( 1 , NULL ) ; else if ( ! client -> authenticated ) buffer = buffer_new ( 64 , NULL ) ; else buffer = side -> current_read_buffer ; if ( ! buffer_read ( side , buffer , socket ) ) { if ( buffer != side -> current_read_buffer ) buffer_unref ( buffer ) ; break ; } if ( ! client -> authenticated ) { if ( buffer -> pos > 0 ) { gboolean found_auth_end = FALSE ; gsize extra_data ; buffer -> size = buffer -> pos ; if ( ! side -> got_first_byte ) { buffer -> send_credentials = TRUE ; side -> got_first_byte = TRUE ; } else if ( side == & client -> client_side ) { gssize auth_end = find_auth_end ( client , buffer ) ; if ( auth_end >= 0 ) { found_auth_end = TRUE ; buffer -> size = auth_end ; extra_data = buffer -> pos - buffer -> size ; if ( extra_data > 0 ) side -> extra_input_data = g_bytes_new ( buffer -> data + buffer -> size , extra_data ) ; } <S2SV_StartBug> } <S2SV_EndBug> got_buffer_from_side ( side , buffer ) ; if ( found_auth_end ) client -> authenticated = TRUE ; } else { buffer_unref ( buffer ) ; } } else if ( buffer -> pos == buffer -> size ) { if ( buffer == & side -> header_buffer ) { gssize required ; required = g_dbus_message_bytes_needed ( buffer -> data , buffer -> size , & error ) ; if ( required < 0 ) { g_warning ( \"Invalid<S2SV_blank>message<S2SV_blank>header<S2SV_blank>read\" ) ; side_closed ( side ) ; } else { side -> current_read_buffer = buffer_new ( required , buffer ) ; } } else { got_buffer_from_side ( side , buffer ) ; side -> header_buffer . pos = 0 ; side -> current_read_buffer = & side -> header_buffer ; } } } if ( side -> closed ) { side -> in_source = NULL ; retval = G_SOURCE_REMOVE ; } g_object_unref ( client ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } else if ( auth_end == FIND_AUTH_END_ABORT ) { buffer_unref ( buffer ) ; if ( client -> proxy -> log_messages ) g_print ( \"Invalid<S2SV_blank>AUTH<S2SV_blank>line,<S2SV_blank>aborting\\\\n\" ) ; side_closed ( side ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static void ext4_xattr_release_block ( handle_t * handle , struct inode * inode , struct buffer_head * bh ) { <S2SV_StartBug> struct mb_cache_entry * ce = NULL ; <S2SV_EndBug> <S2SV_StartBug> int error = 0 ; <S2SV_EndBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; ce = mb_cache_entry_get ( ext4_mb_cache , bh -> b_bdev , bh -> b_blocknr ) ; BUFFER_TRACE ( bh , \"get_write_access\" ) ; error = ext4_journal_get_write_access ( handle , bh ) ; if ( error ) goto out ; lock_buffer ( bh ) ; if ( BHDR ( bh ) -> h_refcount == cpu_to_le32 ( 1 ) ) { <S2SV_StartBug> ea_bdebug ( bh , \"refcount<S2SV_blank>now=0;<S2SV_blank>freeing\" ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ce ) <S2SV_EndBug> mb_cache_entry_free ( ce ) ; get_bh ( bh ) ; unlock_buffer ( bh ) ; ext4_free_blocks ( handle , inode , bh , 0 , 1 , EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET ) ; } else { le32_add_cpu ( & BHDR ( bh ) -> h_refcount , - 1 ) ; <S2SV_StartBug> if ( ce ) <S2SV_EndBug> mb_cache_entry_release ( ce ) ; if ( ext4_handle_valid ( handle ) ) error = ext4_handle_dirty_xattr_block ( handle , inode , bh ) ; unlock_buffer ( bh ) ; if ( ! ext4_handle_valid ( handle ) ) error = ext4_handle_dirty_xattr_block ( handle , inode , bh ) ; if ( IS_SYNC ( inode ) ) ext4_handle_sync ( handle ) ; dquot_free_block ( inode , EXT4_C2B ( EXT4_SB ( inode -> i_sb ) , 1 ) ) ; ea_bdebug ( bh , \"refcount<S2SV_blank>now=%d;<S2SV_blank>releasing\" , le32_to_cpu ( BHDR ( bh ) -> h_refcount ) ) ; } out : ext4_std_error ( inode -> i_sb , error ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bh ) { <S2SV_ModEnd> int error = <S2SV_ModStart> error = 0 <S2SV_ModEnd> ; BUFFER_TRACE ( <S2SV_ModStart> ) ) { __u32 hash = le32_to_cpu ( BHDR ( bh ) -> h_hash ) ; <S2SV_ModStart> \"refcount<S2SV_blank>now=0;<S2SV_blank>freeing\" ) ; mb2_cache_entry_delete_block ( EXT4_GET_MB_CACHE ( inode ) , hash , bh -> b_blocknr <S2SV_ModEnd> ) ; get_bh <S2SV_ModStart> ; if ( <S2SV_ModEnd> ext4_handle_valid ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-754(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19646\n\n```\nCWE-754 Expr * sqlite3CreateColumnExpr ( sqlite3 * db , SrcList * pSrc , int iSrc , int iCol ) { Expr * p = sqlite3ExprAlloc ( db , TK_COLUMN , 0 , 0 ) ; if ( p ) { struct SrcList_item * pItem = & pSrc -> a [ iSrc ] ; <S2SV_StartBug> p -> y . pTab = pItem -> pTab ; <S2SV_EndBug> p -> iTable = pItem -> iCursor ; if ( p -> y . pTab -> iPKey == iCol ) { p -> iColumn = - 1 ; } else { p -> iColumn = ( ynVar ) iCol ; <S2SV_StartBug> testcase ( iCol == BMS ) ; <S2SV_EndBug> testcase ( iCol == BMS - 1 ) ; pItem -> colUsed |= ( ( Bitmask ) 1 ) << ( iCol >= BMS ? BMS - 1 : iCol ) ; } } <S2SV_StartBug> return p ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iSrc ] ; Table * pTab = <S2SV_ModStart> ) iCol ; if ( pTab -> tabFlags & TF_HasGenerated ) { Column * pColumn = pTab -> aCol + iCol ; if ( pColumn -> colFlags & COLFLAG_GENERATED ) { testcase ( pTab -> nCol == 63 ) ; testcase ( pTab -> nCol == 64 ) ; if ( pTab -> nCol >= 64 ) { pItem -> colUsed = ALLBITS ; } else { pItem -> colUsed = MASKBIT ( pTab -> nCol ) - 1 ; } } } else { <S2SV_ModStart> ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2463\n\n```\nCWE-119 u32 h264bsdInit ( storage_t * pStorage , u32 noOutputReordering ) { u32 size ; ASSERT ( pStorage ) ; h264bsdInitStorage ( pStorage ) ; size = ( sizeof ( macroblockLayer_t ) + 63 ) & ~ 0x3F ; <S2SV_StartBug> pStorage -> mbLayer = ( macroblockLayer_t * ) H264SwDecMalloc ( size ) ; <S2SV_EndBug> if ( ! pStorage -> mbLayer ) return HANTRO_NOK ; if ( noOutputReordering ) pStorage -> noReordering = HANTRO_TRUE ; return HANTRO_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> H264SwDecMalloc ( size , 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * delete_principal_2_svc ( dprinc_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_DELETE , arg -> princ , NULL ) ) { ret . code = KADM5_AUTH_DELETE ; log_unauth ( \"kadm5_delete_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_delete_principal ( ( void * ) handle , arg -> princ ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_delete_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_StartBug> exit_func : <S2SV_EndBug> free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : <S2SV_ModStart> service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void setup_decoding_thread_data ( VP8D_COMP * pbi , MACROBLOCKD * xd , MB_ROW_DEC * mbrd , int count ) { VP8_COMMON * const pc = & pbi -> common ; int i ; for ( i = 0 ; i < count ; i ++ ) { MACROBLOCKD * mbd = & mbrd [ i ] . mbd ; mbd -> subpixel_predict = xd -> subpixel_predict ; mbd -> subpixel_predict8x4 = xd -> subpixel_predict8x4 ; mbd -> subpixel_predict8x8 = xd -> subpixel_predict8x8 ; mbd -> subpixel_predict16x16 = xd -> subpixel_predict16x16 ; mbd -> mode_info_context = pc -> mi + pc -> mode_info_stride * ( i + 1 ) ; mbd -> mode_info_stride = pc -> mode_info_stride ; mbd -> frame_type = pc -> frame_type ; mbd -> pre = xd -> pre ; mbd -> dst = xd -> dst ; mbd -> segmentation_enabled = xd -> segmentation_enabled ; mbd -> mb_segement_abs_delta = xd -> mb_segement_abs_delta ; <S2SV_StartBug> vpx_memcpy ( mbd -> segment_feature_data , xd -> segment_feature_data , sizeof ( xd -> segment_feature_data ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( mbd -> ref_lf_deltas , xd -> ref_lf_deltas , sizeof ( xd -> ref_lf_deltas ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( mbd -> mode_lf_deltas , xd -> mode_lf_deltas , sizeof ( xd -> mode_lf_deltas ) ) ; <S2SV_EndBug> mbd -> mode_ref_lf_delta_enabled = xd -> mode_ref_lf_delta_enabled ; mbd -> mode_ref_lf_delta_update = xd -> mode_ref_lf_delta_update ; mbd -> current_bc = & pbi -> mbc [ 0 ] ; <S2SV_StartBug> vpx_memcpy ( mbd -> dequant_y1_dc , xd -> dequant_y1_dc , sizeof ( xd -> dequant_y1_dc ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( mbd -> dequant_y1 , xd -> dequant_y1 , sizeof ( xd -> dequant_y1 ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( mbd -> dequant_y2 , xd -> dequant_y2 , sizeof ( xd -> dequant_y2 ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( mbd -> dequant_uv , xd -> dequant_uv , sizeof ( xd -> dequant_uv ) ) ; <S2SV_EndBug> mbd -> fullpixel_mask = 0xffffffff ; if ( pc -> full_pixel ) mbd -> fullpixel_mask = 0xfffffff8 ; } for ( i = 0 ; i < pc -> mb_rows ; i ++ ) pbi -> mt_current_mb_col [ i ] = - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mb_segement_abs_delta ; memcpy <S2SV_ModEnd> ( mbd -> <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( mbd -> <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( mbd -> <S2SV_ModStart> 0 ] ; memcpy <S2SV_ModEnd> ( mbd -> <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( mbd -> <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( mbd -> <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( mbd ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void zz_motion_search ( VP8_COMP * cpi , MACROBLOCK * x , YV12_BUFFER_CONFIG * raw_buffer , int * raw_motion_err , YV12_BUFFER_CONFIG * recon_buffer , int * best_motion_err , int recon_yoffset ) { MACROBLOCKD * const xd = & x -> e_mbd ; BLOCK * b = & x -> block [ 0 ] ; BLOCKD * d = & x -> e_mbd . block [ 0 ] ; unsigned char * src_ptr = ( * ( b -> base_src ) + b -> src ) ; int src_stride = b -> src_stride ; unsigned char * raw_ptr ; int raw_stride = raw_buffer -> y_stride ; unsigned char * ref_ptr ; int ref_stride = x -> e_mbd . pre . y_stride ; <S2SV_StartBug> raw_ptr = ( unsigned char * ) ( raw_buffer -> y_buffer + recon_yoffset <S2SV_EndBug> + d -> offset ) ; <S2SV_StartBug> vp8_mse16x16 ( src_ptr , src_stride , raw_ptr , raw_stride , <S2SV_EndBug> ( unsigned int * ) ( raw_motion_err ) ) ; xd -> pre . y_buffer = recon_buffer -> y_buffer + recon_yoffset ; ref_ptr = ( unsigned char * ) ( xd -> pre . y_buffer + d -> offset ) ; <S2SV_StartBug> vp8_mse16x16 ( src_ptr , src_stride , ref_ptr , ref_stride , <S2SV_EndBug> ( unsigned int * ) ( best_motion_err ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . y_stride ; ( void ) cpi ; <S2SV_ModStart> offset ) ; vpx_mse16x16 <S2SV_ModEnd> ( src_ptr , <S2SV_ModStart> offset ) ; vpx_mse16x16 <S2SV_ModEnd> ( src_ptr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_set_roi_map ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { vpx_roi_map_t * data = va_arg ( args , vpx_roi_map_t * ) ; if ( data ) { vpx_roi_map_t * roi = ( vpx_roi_map_t * ) data ; if ( ! vp8_set_roimap ( ctx -> cpi , roi -> roi_map , roi -> rows , roi -> cols , roi -> delta_q , roi -> delta_lf , roi -> static_threshold ) ) return VPX_CODEC_OK ; else return VPX_CODEC_INVALID_PARAM ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35679\n\n```\nCWE-772 int table_regex_match ( const char * string , const char * pattern ) { regex_t preg ; <S2SV_StartBug> int cflags = REG_EXTENDED | REG_NOSUB ; <S2SV_EndBug> if ( strncmp ( pattern , \"(?i)\" , 4 ) == 0 ) { cflags |= REG_ICASE ; pattern += 4 ; } if ( regcomp ( & preg , pattern , cflags ) != 0 ) return ( 0 ) ; <S2SV_StartBug> if ( regexec ( & preg , string , 0 , NULL , 0 ) != 0 ) <S2SV_EndBug> return ( 0 ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> REG_EXTENDED | REG_NOSUB ; int ret <S2SV_ModStart> 0 ) ; ret = <S2SV_ModEnd> regexec ( & <S2SV_ModStart> , 0 ) ; regfree ( & preg ) ; if ( ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 int ssl3_get_record ( SSL * s ) { int ssl_major , ssl_minor , al ; int enc_err , n , i , ret = - 1 ; SSL3_RECORD * rr ; SSL3_BUFFER * rbuf ; SSL_SESSION * sess ; unsigned char * p ; unsigned char md [ EVP_MAX_MD_SIZE ] ; short version ; unsigned mac_size ; unsigned int num_recs = 0 ; unsigned int max_recs ; unsigned int j ; rr = RECORD_LAYER_get_rrec ( & s -> rlayer ) ; rbuf = RECORD_LAYER_get_rbuf ( & s -> rlayer ) ; max_recs = s -> max_pipelines ; if ( max_recs == 0 ) max_recs = 1 ; sess = s -> session ; do { if ( ( RECORD_LAYER_get_rstate ( & s -> rlayer ) != SSL_ST_READ_BODY ) || ( RECORD_LAYER_get_packet_length ( & s -> rlayer ) < SSL3_RT_HEADER_LENGTH ) ) { n = ssl3_read_n ( s , SSL3_RT_HEADER_LENGTH , SSL3_BUFFER_get_len ( rbuf ) , 0 , num_recs == 0 ? 1 : 0 ) ; if ( n <= 0 ) return ( n ) ; RECORD_LAYER_set_rstate ( & s -> rlayer , SSL_ST_READ_BODY ) ; p = RECORD_LAYER_get_packet ( & s -> rlayer ) ; if ( s -> server && RECORD_LAYER_is_first_record ( & s -> rlayer ) && ( p [ 0 ] & 0x80 ) && ( p [ 2 ] == SSL2_MT_CLIENT_HELLO ) ) { rr [ num_recs ] . type = SSL3_RT_HANDSHAKE ; rr [ num_recs ] . rec_version = SSL2_VERSION ; rr [ num_recs ] . length = ( ( p [ 0 ] & 0x7f ) << 8 ) | p [ 1 ] ; if ( rr [ num_recs ] . length > SSL3_BUFFER_get_len ( rbuf ) - SSL2_RT_HEADER_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_PACKET_LENGTH_TOO_LONG ) ; goto f_err ; } if ( rr [ num_recs ] . length < MIN_SSL2_RECORD_LEN ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } } else { if ( s -> msg_callback ) s -> msg_callback ( 0 , 0 , SSL3_RT_HEADER , p , 5 , s , s -> msg_callback_arg ) ; rr [ num_recs ] . type = * ( p ++ ) ; ssl_major = * ( p ++ ) ; ssl_minor = * ( p ++ ) ; version = ( ssl_major << 8 ) | ssl_minor ; rr [ num_recs ] . rec_version = version ; n2s ( p , rr [ num_recs ] . length ) ; if ( ! s -> first_packet && version != s -> version ) { SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_WRONG_VERSION_NUMBER ) ; if ( ( s -> version & 0xFF00 ) == ( version & 0xFF00 ) && ! s -> enc_write_ctx && ! s -> write_hash ) { if ( rr -> type == SSL3_RT_ALERT ) { goto err ; } s -> version = ( unsigned short ) version ; } al = SSL_AD_PROTOCOL_VERSION ; goto f_err ; } if ( ( version >> 8 ) != SSL3_VERSION_MAJOR ) { if ( RECORD_LAYER_is_first_record ( & s -> rlayer ) ) { p = RECORD_LAYER_get_packet ( & s -> rlayer ) ; if ( strncmp ( ( char * ) p , \"GET<S2SV_blank>\" , 4 ) == 0 || strncmp ( ( char * ) p , \"POST<S2SV_blank>\" , 5 ) == 0 || strncmp ( ( char * ) p , \"HEAD<S2SV_blank>\" , 5 ) == 0 || strncmp ( ( char * ) p , \"PUT<S2SV_blank>\" , 4 ) == 0 ) { SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_HTTP_REQUEST ) ; goto err ; } else if ( strncmp ( ( char * ) p , \"CONNE\" , 5 ) == 0 ) { SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_HTTPS_PROXY_REQUEST ) ; goto err ; } SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_WRONG_VERSION_NUMBER ) ; goto err ; } else { SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_WRONG_VERSION_NUMBER ) ; al = SSL_AD_PROTOCOL_VERSION ; goto f_err ; } } if ( rr [ num_recs ] . length > SSL3_BUFFER_get_len ( rbuf ) - SSL3_RT_HEADER_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_PACKET_LENGTH_TOO_LONG ) ; goto f_err ; } } } if ( rr [ num_recs ] . rec_version == SSL2_VERSION ) { i = rr [ num_recs ] . length + SSL2_RT_HEADER_LENGTH - SSL3_RT_HEADER_LENGTH ; } else { i = rr [ num_recs ] . length ; } if ( i > 0 ) { n = ssl3_read_n ( s , i , i , 1 , 0 ) ; if ( n <= 0 ) return ( n ) ; } RECORD_LAYER_set_rstate ( & s -> rlayer , SSL_ST_READ_HEADER ) ; if ( rr [ num_recs ] . rec_version == SSL2_VERSION ) { rr [ num_recs ] . input = & ( RECORD_LAYER_get_packet ( & s -> rlayer ) [ SSL2_RT_HEADER_LENGTH ] ) ; } else { rr [ num_recs ] . input = & ( RECORD_LAYER_get_packet ( & s -> rlayer ) [ SSL3_RT_HEADER_LENGTH ] ) ; } if ( rr [ num_recs ] . length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_ENCRYPTED_LENGTH_TOO_LONG ) ; goto f_err ; } rr [ num_recs ] . data = rr [ num_recs ] . input ; rr [ num_recs ] . orig_len = rr [ num_recs ] . length ; rr [ num_recs ] . read = 0 ; num_recs ++ ; RECORD_LAYER_reset_packet_length ( & s -> rlayer ) ; RECORD_LAYER_clear_first_record ( & s -> rlayer ) ; } while ( num_recs < max_recs && rr [ num_recs - 1 ] . type == SSL3_RT_APPLICATION_DATA && SSL_USE_EXPLICIT_IV ( s ) && s -> enc_read_ctx != NULL && ( EVP_CIPHER_flags ( EVP_CIPHER_CTX_cipher ( s -> enc_read_ctx ) ) & EVP_CIPH_FLAG_PIPELINE ) && ssl3_record_app_data_waiting ( s ) ) ; <S2SV_StartBug> if ( SSL_USE_ETM ( s ) && s -> read_hash ) { <S2SV_EndBug> unsigned char * mac ; mac_size = EVP_MD_CTX_size ( s -> read_hash ) ; OPENSSL_assert ( mac_size <= EVP_MAX_MD_SIZE ) ; for ( j = 0 ; j < num_recs ; j ++ ) { if ( rr [ j ] . length < mac_size ) { al = SSL_AD_DECODE_ERROR ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } rr [ j ] . length -= mac_size ; mac = rr [ j ] . data + rr [ j ] . length ; i = s -> method -> ssl3_enc -> mac ( s , & rr [ j ] , md , 0 ) ; if ( i < 0 || CRYPTO_memcmp ( md , mac , ( size_t ) mac_size ) != 0 ) { al = SSL_AD_BAD_RECORD_MAC ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC ) ; goto f_err ; } } } enc_err = s -> method -> ssl3_enc -> enc ( s , rr , num_recs , 0 ) ; if ( enc_err == 0 ) { al = SSL_AD_DECRYPTION_FAILED ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_BLOCK_CIPHER_PAD_IS_WRONG ) ; goto f_err ; } # ifdef SSL_DEBUG printf ( \"dec<S2SV_blank>%d\\\\n\" , rr -> length ) ; { unsigned int z ; for ( z = 0 ; z < rr -> length ; z ++ ) printf ( \"%02X%c\" , rr -> data [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } printf ( \"\\\\n\" ) ; # endif if ( ( sess != NULL ) && ( s -> enc_read_ctx != NULL ) && <S2SV_StartBug> ( EVP_MD_CTX_md ( s -> read_hash ) != NULL ) && ! SSL_USE_ETM ( s ) ) { <S2SV_EndBug> unsigned char * mac = NULL ; unsigned char mac_tmp [ EVP_MAX_MD_SIZE ] ; mac_size = EVP_MD_CTX_size ( s -> read_hash ) ; OPENSSL_assert ( mac_size <= EVP_MAX_MD_SIZE ) ; for ( j = 0 ; j < num_recs ; j ++ ) { if ( rr [ j ] . orig_len < mac_size || ( EVP_CIPHER_CTX_mode ( s -> enc_read_ctx ) == EVP_CIPH_CBC_MODE && rr [ j ] . orig_len < mac_size + 1 ) ) { al = SSL_AD_DECODE_ERROR ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } if ( EVP_CIPHER_CTX_mode ( s -> enc_read_ctx ) == EVP_CIPH_CBC_MODE ) { mac = mac_tmp ; ssl3_cbc_copy_mac ( mac_tmp , & rr [ j ] , mac_size ) ; rr [ j ] . length -= mac_size ; } else { rr [ j ] . length -= mac_size ; mac = & rr [ j ] . data [ rr [ j ] . length ] ; } i = s -> method -> ssl3_enc -> mac ( s , & rr [ j ] , md , 0 ) ; if ( i < 0 || mac == NULL || CRYPTO_memcmp ( md , mac , ( size_t ) mac_size ) != 0 ) enc_err = - 1 ; if ( rr -> length > SSL3_RT_MAX_COMPRESSED_LENGTH + mac_size ) enc_err = - 1 ; } } if ( enc_err < 0 ) { al = SSL_AD_BAD_RECORD_MAC ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_DECRYPTION_FAILED_OR_BAD_RECORD_MAC ) ; goto f_err ; } for ( j = 0 ; j < num_recs ; j ++ ) { if ( s -> expand != NULL ) { if ( rr [ j ] . length > SSL3_RT_MAX_COMPRESSED_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_COMPRESSED_LENGTH_TOO_LONG ) ; goto f_err ; } if ( ! ssl3_do_uncompress ( s , & rr [ j ] ) ) { al = SSL_AD_DECOMPRESSION_FAILURE ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_BAD_DECOMPRESSION ) ; goto f_err ; } } if ( rr [ j ] . length > SSL3_RT_MAX_PLAIN_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_DATA_LENGTH_TOO_LONG ) ; goto f_err ; } rr [ j ] . off = 0 ; if ( rr [ j ] . length == 0 ) { RECORD_LAYER_inc_empty_record_count ( & s -> rlayer ) ; if ( RECORD_LAYER_get_empty_record_count ( & s -> rlayer ) > MAX_EMPTY_RECORDS ) { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_SSL3_GET_RECORD , SSL_R_RECORD_TOO_SMALL ) ; goto f_err ; } } else { RECORD_LAYER_reset_empty_record_count ( & s -> rlayer ) ; } } RECORD_LAYER_set_numrpipes ( & s -> rlayer , num_recs ) ; return 1 ; f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( SSL_READ_ETM <S2SV_ModEnd> ( s ) <S2SV_ModStart> ) && ( ! SSL_READ_ETM ( s ) && <S2SV_ModStart> ) != NULL <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14175\n\n```\nCWE-834 <S2SV_StartBug> static unsigned int XBMInteger ( Image * image , short int * hex_digits ) <S2SV_EndBug> { int c ; unsigned int value ; do { c = ReadBlobByte ( image ) ; if ( c == EOF ) <S2SV_StartBug> return ( 0 ) ; <S2SV_EndBug> } while ( ( c == '<S2SV_blank>' ) || ( c == '\\\\t' ) || ( c == '\\\\n' ) || ( c == '\\\\r' ) ) ; value = 0 ; while ( hex_digits [ c ] >= 0 ) { if ( value > ( unsigned int ) ( INT_MAX / 10 ) ) break ; value *= 16 ; c &= 0xff ; if ( value > ( unsigned int ) ( INT_MAX - hex_digits [ c ] ) ) break ; value += hex_digits [ c ] ; c = ReadBlobByte ( image ) ; if ( c == EOF ) <S2SV_StartBug> return ( 0 ) ; <S2SV_EndBug> } <S2SV_StartBug> return ( value ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static <S2SV_ModEnd> int XBMInteger ( <S2SV_ModStart> ) return ( - 1 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) return ( - 1 <S2SV_ModEnd> ) ; } <S2SV_ModStart> } return ( ( int )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0028\n\n```\nCWE-264 void mm_release ( struct task_struct * tsk , struct mm_struct * mm ) { <S2SV_StartBug> struct completion * vfork_done = tsk -> vfork_done ; <S2SV_EndBug> deactivate_mm ( tsk , mm ) ; if ( vfork_done ) { tsk -> vfork_done = NULL ; complete ( vfork_done ) ; } if ( tsk -> clear_child_tid && ! ( tsk -> flags & PF_SIGNALED ) && atomic_read ( & mm -> mm_users ) > 1 ) { u32 __user * tidptr = tsk -> clear_child_tid ; tsk -> clear_child_tid = NULL ; put_user ( 0 , tidptr ) ; sys_futex ( tidptr , FUTEX_WAKE , 1 , NULL , NULL , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> vfork_done ; # ifdef CONFIG_FUTEX if ( unlikely ( tsk -> robust_list ) ) exit_robust_list ( tsk ) ; # ifdef CONFIG_COMPAT if ( unlikely ( tsk -> compat_robust_list ) ) compat_exit_robust_list ( tsk ) ; # endif # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13134\n\n```\nCWE-399 static Image * ReadVIFFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define VFF_CM_genericRGB 15 # define VFF_CM_ntscRGB 1 # define VFF_CM_NONE 0 # define VFF_DEP_DECORDER 0x4 # define VFF_DEP_NSORDER 0x8 # define VFF_DES_RAW 0 # define VFF_LOC_IMPLICIT 1 # define VFF_MAPTYP_NONE 0 # define VFF_MAPTYP_1_BYTE 1 # define VFF_MAPTYP_2_BYTE 2 # define VFF_MAPTYP_4_BYTE 4 # define VFF_MAPTYP_FLOAT 5 # define VFF_MAPTYP_DOUBLE 7 # define VFF_MS_NONE 0 # define VFF_MS_ONEPERBAND 1 # define VFF_MS_SHARED 3 # define VFF_TYP_BIT 0 # define VFF_TYP_1_BYTE 1 # define VFF_TYP_2_BYTE 2 # define VFF_TYP_4_BYTE 4 # define VFF_TYP_FLOAT 5 # define VFF_TYP_DOUBLE 9 typedef struct _ViffInfo { unsigned char identifier , file_type , release , version , machine_dependency , reserve [ 3 ] ; char comment [ 512 ] ; unsigned int rows , columns , subrows ; int x_offset , y_offset ; float x_bits_per_pixel , y_bits_per_pixel ; unsigned int location_type , location_dimension , number_of_images , number_data_bands , data_storage_type , data_encode_scheme , map_scheme , map_storage_type , map_rows , map_columns , map_subrows , map_enable , maps_per_cycle , color_space_model ; } ViffInfo ; double min_value , scale_factor , value ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bytes_per_pixel , max_packets , quantum ; ssize_t count , y ; unsigned char * pixels ; unsigned long lsb_first ; ViffInfo viff_info ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 1 , & viff_info . identifier ) ; do { if ( ( count != 1 ) || ( ( unsigned char ) viff_info . identifier != 0xab ) ) ThrowReaderException ( CorruptImageError , \"NotAVIFFImage\" ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . file_type ) , & viff_info . file_type ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . release ) , & viff_info . release ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . version ) , & viff_info . version ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . machine_dependency ) , & viff_info . machine_dependency ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . reserve ) , viff_info . reserve ) ; count = ReadBlob ( image , 512 , ( unsigned char * ) viff_info . comment ) ; if ( count != 512 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_info . comment [ 511 ] = '\\\\0' ; if ( strlen ( viff_info . comment ) > 4 ) ( void ) SetImageProperty ( image , \"comment\" , viff_info . comment , exception ) ; if ( ( viff_info . machine_dependency == VFF_DEP_DECORDER ) || ( viff_info . machine_dependency == VFF_DEP_NSORDER ) ) image -> endian = LSBEndian ; else image -> endian = MSBEndian ; viff_info . rows = ReadBlobLong ( image ) ; viff_info . columns = ReadBlobLong ( image ) ; viff_info . subrows = ReadBlobLong ( image ) ; viff_info . x_offset = ReadBlobSignedLong ( image ) ; viff_info . y_offset = ReadBlobSignedLong ( image ) ; viff_info . x_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . y_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . location_type = ReadBlobLong ( image ) ; viff_info . location_dimension = ReadBlobLong ( image ) ; viff_info . number_of_images = ReadBlobLong ( image ) ; viff_info . number_data_bands = ReadBlobLong ( image ) ; viff_info . data_storage_type = ReadBlobLong ( image ) ; viff_info . data_encode_scheme = ReadBlobLong ( image ) ; viff_info . map_scheme = ReadBlobLong ( image ) ; viff_info . map_storage_type = ReadBlobLong ( image ) ; viff_info . map_rows = ReadBlobLong ( image ) ; viff_info . map_columns = ReadBlobLong ( image ) ; viff_info . map_subrows = ReadBlobLong ( image ) ; viff_info . map_enable = ReadBlobLong ( image ) ; viff_info . maps_per_cycle = ReadBlobLong ( image ) ; viff_info . color_space_model = ReadBlobLong ( image ) ; for ( i = 0 ; i < 420 ; i ++ ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; number_pixels = ( MagickSizeType ) viff_info . columns * viff_info . rows ; if ( number_pixels > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( number_pixels != ( size_t ) number_pixels ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( number_pixels == 0 ) ThrowReaderException ( CoderError , \"ImageColumnOrRowSizeIsNotSupported\" ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; image -> depth = viff_info . x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH ; image -> alpha_trait = viff_info . number_data_bands == 4 ? BlendPixelTrait : UndefinedPixelTrait ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; ( void ) SetImageBackgroundColor ( image , exception ) ; if ( ( viff_info . number_data_bands < 1 ) || ( viff_info . number_data_bands > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( viff_info . data_storage_type != VFF_TYP_BIT ) && ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_2_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_4_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_FLOAT ) && ( viff_info . data_storage_type != VFF_TYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"DataStorageTypeIsNotSupported\" ) ; if ( viff_info . data_encode_scheme != VFF_DES_RAW ) ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; if ( ( viff_info . map_storage_type != VFF_MAPTYP_NONE ) && ( viff_info . map_storage_type != VFF_MAPTYP_1_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_2_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_4_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_FLOAT ) && ( viff_info . map_storage_type != VFF_MAPTYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"MapStorageTypeIsNotSupported\" ) ; if ( ( viff_info . color_space_model != VFF_CM_NONE ) && ( viff_info . color_space_model != VFF_CM_ntscRGB ) && ( viff_info . color_space_model != VFF_CM_genericRGB ) ) ThrowReaderException ( CoderError , \"ColorspaceModelIsNotSupported\" ) ; if ( viff_info . location_type != VFF_LOC_IMPLICIT ) ThrowReaderException ( CoderError , \"LocationTypeIsNotSupported\" ) ; if ( viff_info . number_of_images != 1 ) ThrowReaderException ( CoderError , \"NumberOfImagesIsNotSupported\" ) ; if ( viff_info . map_rows == 0 ) viff_info . map_scheme = VFF_MS_NONE ; switch ( ( int ) viff_info . map_scheme ) { case VFF_MS_NONE : { if ( viff_info . number_data_bands < 3 ) { if ( viff_info . data_storage_type == VFF_TYP_BIT ) image -> colors = 2 ; else if ( viff_info . data_storage_type == VFF_MAPTYP_1_BYTE ) image -> colors = 256UL ; else image -> colors = image -> depth <= 8 ? 256UL : 65536UL ; status = AcquireImageColormap ( image , image -> colors , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case VFF_MS_ONEPERBAND : case VFF_MS_SHARED : { unsigned char * viff_colormap ; switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_1_BYTE : bytes_per_pixel = 1 ; break ; case VFF_MAPTYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_MAPTYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } image -> colors = viff_info . map_columns ; if ( ( MagickSizeType ) ( viff_info . map_rows * image -> colors ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( MagickSizeType ) viff_info . map_rows > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ( MagickSizeType ) viff_info . map_rows > ( viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ; if ( viff_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , bytes_per_pixel * image -> colors * viff_info . map_rows , viff_colormap ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : { MSBOrderShort ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } case VFF_MAPTYP_4_BYTE : case VFF_MAPTYP_FLOAT : { MSBOrderLong ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } default : break ; } for ( i = 0 ; i < ( ssize_t ) ( viff_info . map_rows * image -> colors ) ; i ++ ) { switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : value = 1.0 * ( ( short * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_4_BYTE : value = 1.0 * ( ( int * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_FLOAT : value = ( ( float * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_DOUBLE : value = ( ( double * ) viff_colormap ) [ i ] ; break ; default : value = 1.0 * viff_colormap [ i ] ; break ; } if ( i < ( ssize_t ) image -> colors ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; } else if ( i < ( ssize_t ) ( 2 * image -> colors ) ) image -> colormap [ i % image -> colors ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; else if ( i < ( ssize_t ) ( 3 * image -> colors ) ) image -> colormap [ i % image -> colors ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; } viff_colormap = ( unsigned char * ) RelinquishMagickMemory ( viff_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { image -> colors = 2 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; image -> colorspace = GRAYColorspace ; } switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_TYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_TYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_TYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } if ( viff_info . data_storage_type == VFF_TYP_BIT ) { if ( HeapOverflowSanityCheck ( ( image -> columns + 7UL ) >> 3UL , image -> rows ) != MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; } else { if ( HeapOverflowSanityCheck ( ( size_t ) number_pixels , viff_info . number_data_bands ) != MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; max_packets = ( size_t ) ( number_pixels * viff_info . number_data_bands ) ; } if ( ( MagickSizeType ) ( bytes_per_pixel * max_packets ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; pixels = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( number_pixels , max_packets ) , bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( pixels , 0 , MagickMax ( number_pixels , max_packets ) * bytes_per_pixel * sizeof ( * pixels ) ) ; count = ReadBlob ( image , bytes_per_pixel * max_packets , pixels ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : { MSBOrderShort ( pixels , bytes_per_pixel * max_packets ) ; break ; } case VFF_TYP_4_BYTE : case VFF_TYP_FLOAT : { MSBOrderLong ( pixels , bytes_per_pixel * max_packets ) ; break ; } default : break ; } min_value = 0.0 ; scale_factor = 1.0 ; if ( ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . map_scheme == VFF_MS_NONE ) ) { double max_value ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ 0 ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ 0 ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ 0 ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ 0 ] ; break ; default : value = 1.0 * pixels [ 0 ] ; break ; } max_value = value ; min_value = value ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( value > max_value ) max_value = value ; else if ( value < min_value ) min_value = value ; } if ( ( min_value == 0 ) && ( max_value == 0 ) ) scale_factor = 0 ; else if ( min_value == max_value ) { scale_factor = ( double ) QuantumRange / min_value ; min_value = 0 ; } else scale_factor = ( double ) QuantumRange / ( max_value - min_value ) ; } p = ( unsigned char * ) pixels ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( viff_info . map_scheme == VFF_MS_NONE ) { value = ( value - min_value ) * scale_factor ; if ( value > QuantumRange ) value = QuantumRange ; else if ( value < 0 ) value = 0 ; } * p = ( unsigned char ) ( ( Quantum ) value ) ; p ++ ; } p = ( unsigned char * ) pixels ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) ( image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( int ) ( image -> columns % 8 ) ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else if ( image -> storage_class == PseudoClass ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else { number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + number_pixels ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 * number_pixels ) ) , q ) ; if ( image -> colors != 0 ) { ssize_t index ; index = ( ssize_t ) GetPixelRed ( image , q ) ; SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . red ) , q ) ; index = ( ssize_t ) GetPixelGreen ( image , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . green ) , q ) ; index = ( ssize_t ) GetPixelBlue ( image , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . blue ) , q ) ; } SetPixelAlpha ( image , image -> alpha_trait != UndefinedPixelTrait ? ScaleCharToQuantum ( * ( p + number_pixels * 3 ) ) : OpaqueAlpha , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; count = ReadBlob ( image , 1 , & viff_info . identifier ) ; if ( ( count == 1 ) && ( viff_info . identifier == 0xab ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { <S2SV_StartBug> image = DestroyImageList ( image ) ; <S2SV_EndBug> return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { status = MagickFalse ; break <S2SV_ModEnd> ; } image\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6545\n\n```\nCWE-200 static int rfcomm_sock_getsockopt ( struct socket * sock , int level , int optname , char __user * optval , int __user * optlen ) { struct sock * sk = sock -> sk ; struct bt_security sec ; int len , err = 0 ; BT_DBG ( \"sk<S2SV_blank>%p\" , sk ) ; if ( level == SOL_RFCOMM ) return rfcomm_sock_getsockopt_old ( sock , optname , optval , optlen ) ; if ( level != SOL_BLUETOOTH ) return - ENOPROTOOPT ; if ( get_user ( len , optlen ) ) return - EFAULT ; lock_sock ( sk ) ; switch ( optname ) { case BT_SECURITY : if ( sk -> sk_type != SOCK_STREAM ) { err = - EINVAL ; break ; } sec . level = rfcomm_pi ( sk ) -> sec_level ; <S2SV_StartBug> len = min_t ( unsigned int , len , sizeof ( sec ) ) ; <S2SV_EndBug> if ( copy_to_user ( optval , ( char * ) & sec , len ) ) err = - EFAULT ; break ; case BT_DEFER_SETUP : if ( sk -> sk_state != BT_BOUND && sk -> sk_state != BT_LISTEN ) { err = - EINVAL ; break ; } if ( put_user ( test_bit ( BT_SK_DEFER_SETUP , & bt_sk ( sk ) -> flags ) , ( u32 __user * ) optval ) ) err = - EFAULT ; break ; default : err = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sec_level ; sec . key_size = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4127\n\n```\nCWE-264 static int sd_ioctl ( struct block_device * bdev , fmode_t mode , unsigned int cmd , unsigned long arg ) { struct gendisk * disk = bdev -> bd_disk ; struct scsi_disk * sdkp = scsi_disk ( disk ) ; struct scsi_device * sdp = sdkp -> device ; void __user * p = ( void __user * ) arg ; int error ; SCSI_LOG_IOCTL ( 1 , sd_printk ( KERN_INFO , sdkp , \"sd_ioctl:<S2SV_blank>disk=%s,<S2SV_blank>\" \"cmd=0x%x\\\\n\" , disk -> disk_name , cmd ) ) ; <S2SV_StartBug> error = scsi_nonblockable_ioctl ( sdp , cmd , p , <S2SV_EndBug> ( mode & FMODE_NDELAY ) != 0 ) ; if ( ! scsi_block_when_processing_errors ( sdp ) || ! error ) goto out ; switch ( cmd ) { case SCSI_IOCTL_GET_IDLUN : case SCSI_IOCTL_GET_BUS_NUMBER : error = scsi_ioctl ( sdp , cmd , p ) ; break ; default : error = scsi_cmd_blk_ioctl ( bdev , mode , cmd , p ) ; if ( error != - ENOTTY ) break ; error = scsi_ioctl ( sdp , cmd , p ) ; break ; } out : return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; error = scsi_verify_blk_ioctl ( bdev , cmd ) ; if ( error < 0 ) return error ; error =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14323\n\n```\nCWE-787 static void ssdp_recv ( int sd ) { ssize_t len ; struct sockaddr sa ; socklen_t salen ; <S2SV_StartBug> char buf [ MAX_PKT_SIZE ] ; <S2SV_EndBug> memset ( buf , 0 , sizeof ( buf ) ) ; <S2SV_StartBug> len = recvfrom ( sd , buf , sizeof ( buf ) , MSG_DONTWAIT , & sa , & salen ) ; <S2SV_EndBug> if ( len > 0 ) { <S2SV_StartBug> buf [ len ] = 0 ; <S2SV_EndBug> if ( sa . sa_family != AF_INET ) return ; if ( strstr ( buf , \"M-SEARCH<S2SV_blank>*\" ) ) { size_t i ; char * ptr , * type ; struct ifsock * ifs ; struct sockaddr_in * sin = ( struct sockaddr_in * ) & sa ; ifs = find_outbound ( & sa ) ; if ( ! ifs ) { logit ( LOG_DEBUG , \"No<S2SV_blank>matching<S2SV_blank>socket<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\" , inet_ntoa ( sin -> sin_addr ) ) ; return ; } logit ( LOG_DEBUG , \"Matching<S2SV_blank>socket<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\" , inet_ntoa ( sin -> sin_addr ) ) ; type = strcasestr ( buf , \"\\\\r\\\\nST:\" ) ; if ( ! type ) { logit ( LOG_DEBUG , \"No<S2SV_blank>Search<S2SV_blank>Type<S2SV_blank>(ST:)<S2SV_blank>found<S2SV_blank>in<S2SV_blank>M-SEARCH<S2SV_blank>*,<S2SV_blank>assuming<S2SV_blank>\" SSDP_ST_ALL ) ; type = SSDP_ST_ALL ; send_message ( ifs , type , & sa ) ; return ; } type = strchr ( type , ':' ) ; if ( ! type ) return ; type ++ ; while ( isspace ( * type ) ) type ++ ; ptr = strstr ( type , \"\\\\r\\\\n\" ) ; if ( ! ptr ) return ; * ptr = 0 ; for ( i = 0 ; supported_types [ i ] ; i ++ ) { if ( ! strcmp ( supported_types [ i ] , type ) ) { logit ( LOG_DEBUG , \"M-SEARCH<S2SV_blank>*<S2SV_blank>ST:<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>port<S2SV_blank>%d\" , type , inet_ntoa ( sin -> sin_addr ) , ntohs ( sin -> sin_port ) ) ; send_message ( ifs , type , & sa ) ; return ; } } logit ( LOG_DEBUG , \"M-SEARCH<S2SV_blank>*<S2SV_blank>for<S2SV_blank>unsupported<S2SV_blank>ST:<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s\" , type , inet_ntoa ( sin -> sin_addr ) ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buf [ MAX_PKT_SIZE + 1 <S2SV_ModStart> ( buf ) - 1 <S2SV_ModStart> 0 ) { <S2SV_ModEnd> if ( sa\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4913\n\n```\nCWE-200 int get_rock_ridge_filename ( struct iso_directory_record * de , char * retname , struct inode * inode ) { struct rock_state rs ; struct rock_ridge * rr ; int sig ; int retnamlen = 0 ; int truncate = 0 ; int ret = 0 ; <S2SV_StartBug> if ( ! ISOFS_SB ( inode -> i_sb ) -> s_rock ) <S2SV_EndBug> return 0 ; * retname = 0 ; init_rock_state ( & rs , inode ) ; setup_rock_ridge ( de , inode , & rs ) ; repeat : while ( rs . len > 2 ) { rr = ( struct rock_ridge * ) rs . chr ; if ( rr -> len < 3 ) goto out ; sig = isonum_721 ( rs . chr ) ; if ( rock_check_overflow ( & rs , sig ) ) goto eio ; rs . chr += rr -> len ; rs . len -= rr -> len ; if ( rs . len < 0 ) goto out ; switch ( sig ) { case SIG ( 'R' , 'R' ) : if ( ( rr -> u . RR . flags [ 0 ] & RR_NM ) == 0 ) goto out ; break ; case SIG ( 'S' , 'P' ) : if ( check_sp ( rr , inode ) ) goto out ; break ; case SIG ( 'C' , 'E' ) : rs . cont_extent = isonum_733 ( rr -> u . CE . extent ) ; rs . cont_offset = isonum_733 ( rr -> u . CE . offset ) ; rs . cont_size = isonum_733 ( rr -> u . CE . size ) ; break ; case SIG ( 'N' , 'M' ) : if ( truncate ) break ; if ( rr -> len < 5 ) break ; if ( rr -> u . NM . flags & 6 ) break ; if ( rr -> u . NM . flags & ~ 1 ) { printk ( \"Unsupported<S2SV_blank>NM<S2SV_blank>flag<S2SV_blank>settings<S2SV_blank>(%d)\\\\n\" , rr -> u . NM . flags ) ; break ; } <S2SV_StartBug> if ( ( strlen ( retname ) + rr -> len - 5 ) >= 254 ) { <S2SV_EndBug> truncate = 1 ; break ; } <S2SV_StartBug> strncat ( retname , rr -> u . NM . name , rr -> len - 5 ) ; <S2SV_EndBug> <S2SV_StartBug> retnamlen += rr -> len - 5 ; <S2SV_EndBug> break ; case SIG ( 'R' , 'E' ) : kfree ( rs . buffer ) ; return - 1 ; default : break ; } } ret = rock_continue ( & rs ) ; if ( ret == 0 ) goto repeat ; if ( ret == 1 ) return retnamlen ; out : kfree ( rs . buffer ) ; return ret ; eio : ret = - EIO ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; char * p ; int len ; <S2SV_ModStart> break ; } len = <S2SV_ModEnd> rr -> len <S2SV_ModStart> len - 5 ; if ( retnamlen + len <S2SV_ModEnd> >= 254 ) <S2SV_ModStart> break ; } p = memchr ( rr -> u . NM . name , '\\\\0' , len ) ; if ( unlikely ( p ) ) len = p - rr -> u . NM . name ; memcpy ( retname + retnamlen <S2SV_ModEnd> , rr -> <S2SV_ModStart> . name , len <S2SV_ModEnd> ) ; retnamlen <S2SV_ModStart> ; retnamlen += len ; retname [ retnamlen ] = '\\\\0' <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3511\n\n```\nCWE-362 static long madvise_remove ( struct vm_area_struct * vma , struct vm_area_struct * * prev , unsigned long start , unsigned long end ) { loff_t offset ; int error ; <S2SV_StartBug> * prev = NULL ; <S2SV_EndBug> if ( vma -> vm_flags & ( VM_LOCKED | VM_NONLINEAR | VM_HUGETLB ) ) return - EINVAL ; <S2SV_StartBug> if ( ! vma -> vm_file || ! vma -> vm_file -> f_mapping <S2SV_EndBug> <S2SV_StartBug> || ! vma -> vm_file -> f_mapping -> host ) { <S2SV_EndBug> return - EINVAL ; } if ( ( vma -> vm_flags & ( VM_SHARED | VM_WRITE ) ) != ( VM_SHARED | VM_WRITE ) ) return - EACCES ; offset = ( loff_t ) ( start - vma -> vm_start ) + ( ( loff_t ) vma -> vm_pgoff << PAGE_SHIFT ) ; <S2SV_StartBug> up_read ( & current -> mm -> mmap_sem ) ; <S2SV_EndBug> <S2SV_StartBug> error = do_fallocate ( vma -> vm_file , <S2SV_EndBug> FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE , <S2SV_StartBug> offset , end - start ) ; <S2SV_EndBug> down_read ( & current -> mm -> mmap_sem ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int error ; struct file * f ; <S2SV_ModStart> - EINVAL ; f = vma -> vm_file ; <S2SV_ModStart> if ( ! f || ! f <S2SV_ModEnd> -> f_mapping || <S2SV_ModStart> f_mapping || ! f <S2SV_ModEnd> -> f_mapping -> <S2SV_ModStart> PAGE_SHIFT ) ; get_file ( f ) ; <S2SV_ModStart> = do_fallocate ( f <S2SV_ModEnd> , FALLOC_FL_PUNCH_HOLE | <S2SV_ModStart> end - start ) ; fput ( f\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17712\n\n```\nCWE-362 static int raw_sendmsg ( struct sock * sk , struct msghdr * msg , size_t len ) { struct inet_sock * inet = inet_sk ( sk ) ; struct net * net = sock_net ( sk ) ; struct ipcm_cookie ipc ; struct rtable * rt = NULL ; struct flowi4 fl4 ; int free = 0 ; __be32 daddr ; __be32 saddr ; u8 tos ; int err ; struct ip_options_data opt_copy ; struct raw_frag_vec rfv ; <S2SV_StartBug> err = - EMSGSIZE ; <S2SV_EndBug> if ( len > 0xFFFF ) <S2SV_StartBug> goto out ; <S2SV_EndBug> err = - EOPNOTSUPP ; if ( msg -> msg_flags & MSG_OOB ) goto out ; if ( msg -> msg_namelen ) { DECLARE_SOCKADDR ( struct sockaddr_in * , usin , msg -> msg_name ) ; err = - EINVAL ; if ( msg -> msg_namelen < sizeof ( * usin ) ) goto out ; if ( usin -> sin_family != AF_INET ) { pr_info_once ( \"%s:<S2SV_blank>%s<S2SV_blank>forgot<S2SV_blank>to<S2SV_blank>set<S2SV_blank>AF_INET.<S2SV_blank>Fix<S2SV_blank>it!\\\\n\" , __func__ , current -> comm ) ; err = - EAFNOSUPPORT ; if ( usin -> sin_family ) goto out ; } daddr = usin -> sin_addr . s_addr ; } else { err = - EDESTADDRREQ ; if ( sk -> sk_state != TCP_ESTABLISHED ) goto out ; daddr = inet -> inet_daddr ; } ipc . sockc . tsflags = sk -> sk_tsflags ; ipc . addr = inet -> inet_saddr ; ipc . opt = NULL ; ipc . tx_flags = 0 ; ipc . ttl = 0 ; ipc . tos = - 1 ; ipc . oif = sk -> sk_bound_dev_if ; if ( msg -> msg_controllen ) { err = ip_cmsg_send ( sk , msg , & ipc , false ) ; if ( unlikely ( err ) ) { kfree ( ipc . opt ) ; goto out ; } if ( ipc . opt ) free = 1 ; } saddr = ipc . addr ; ipc . addr = daddr ; if ( ! ipc . opt ) { struct ip_options_rcu * inet_opt ; rcu_read_lock ( ) ; inet_opt = rcu_dereference ( inet -> inet_opt ) ; if ( inet_opt ) { memcpy ( & opt_copy , inet_opt , sizeof ( * inet_opt ) + inet_opt -> opt . optlen ) ; ipc . opt = & opt_copy . opt ; } rcu_read_unlock ( ) ; } if ( ipc . opt ) { err = - EINVAL ; <S2SV_StartBug> if ( inet -> hdrincl ) <S2SV_EndBug> goto done ; if ( ipc . opt -> opt . srr ) { if ( ! daddr ) goto done ; daddr = ipc . opt -> opt . faddr ; } } tos = get_rtconn_flags ( & ipc , sk ) ; if ( msg -> msg_flags & MSG_DONTROUTE ) tos |= RTO_ONLINK ; if ( ipv4_is_multicast ( daddr ) ) { if ( ! ipc . oif ) ipc . oif = inet -> mc_index ; if ( ! saddr ) saddr = inet -> mc_addr ; } else if ( ! ipc . oif ) ipc . oif = inet -> uc_index ; flowi4_init_output ( & fl4 , ipc . oif , sk -> sk_mark , tos , RT_SCOPE_UNIVERSE , <S2SV_StartBug> inet -> hdrincl ? IPPROTO_RAW : sk -> sk_protocol , <S2SV_EndBug> inet_sk_flowi_flags ( sk ) | <S2SV_StartBug> ( inet -> hdrincl ? FLOWI_FLAG_KNOWN_NH : 0 ) , <S2SV_EndBug> daddr , saddr , 0 , 0 , sk -> sk_uid ) ; <S2SV_StartBug> if ( ! inet -> hdrincl ) { <S2SV_EndBug> rfv . msg = msg ; rfv . hlen = 0 ; err = raw_probe_proto_opt ( & rfv , & fl4 ) ; if ( err ) goto done ; } security_sk_classify_flow ( sk , flowi4_to_flowi ( & fl4 ) ) ; rt = ip_route_output_flow ( net , & fl4 , sk ) ; if ( IS_ERR ( rt ) ) { err = PTR_ERR ( rt ) ; rt = NULL ; goto done ; } err = - EACCES ; if ( rt -> rt_flags & RTCF_BROADCAST && ! sock_flag ( sk , SOCK_BROADCAST ) ) goto done ; if ( msg -> msg_flags & MSG_CONFIRM ) goto do_confirm ; back_from_confirm : <S2SV_StartBug> if ( inet -> hdrincl ) <S2SV_EndBug> err = raw_send_hdrinc ( sk , & fl4 , msg , len , & rt , msg -> msg_flags , & ipc . sockc ) ; else { sock_tx_timestamp ( sk , ipc . sockc . tsflags , & ipc . tx_flags ) ; if ( ! ipc . addr ) ipc . addr = fl4 . daddr ; lock_sock ( sk ) ; err = ip_append_data ( sk , & fl4 , raw_getfrag , & rfv , len , 0 , & ipc , & rt , msg -> msg_flags ) ; if ( err ) ip_flush_pending_frames ( sk ) ; else if ( ! ( msg -> msg_flags & MSG_MORE ) ) { err = ip_push_pending_frames ( sk , & fl4 ) ; if ( err == - ENOBUFS && ! inet -> recverr ) err = 0 ; } release_sock ( sk ) ; } done : if ( free ) kfree ( ipc . opt ) ; ip_rt_put ( rt ) ; out : if ( err < 0 ) return err ; return len ; do_confirm : if ( msg -> msg_flags & MSG_PROBE ) dst_confirm_neigh ( & rt -> dst , & fl4 . daddr ) ; if ( ! ( msg -> msg_flags & MSG_PROBE ) || len ) goto back_from_confirm ; err = 0 ; goto done ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> raw_frag_vec rfv ; int hdrincl ; <S2SV_ModStart> ) goto out ; hdrincl = inet -> hdrincl <S2SV_ModStart> ; if ( <S2SV_ModEnd> hdrincl ) goto <S2SV_ModStart> , RT_SCOPE_UNIVERSE , <S2SV_ModEnd> hdrincl ? IPPROTO_RAW <S2SV_ModStart> ) | ( <S2SV_ModEnd> hdrincl ? FLOWI_FLAG_KNOWN_NH <S2SV_ModStart> if ( ! <S2SV_ModEnd> hdrincl ) { <S2SV_ModStart> : if ( <S2SV_ModEnd> hdrincl ) err\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0207\n\n```\nCWE-119 private int cdf_file_property_info ( struct magic_set * ms , const cdf_property_info_t * info , <S2SV_StartBug> size_t count , const uint64_t clsid [ 2 ] ) <S2SV_EndBug> { size_t i ; cdf_timestamp_t tp ; struct timespec ts ; char buf [ 64 ] ; const char * str = NULL ; const char * s ; int len ; <S2SV_StartBug> if ( ! NOTMIME ( ms ) ) <S2SV_EndBug> <S2SV_StartBug> str = cdf_clsid_to_mime ( clsid , clsid2mime ) ; <S2SV_EndBug> for ( i = 0 ; i < count ; i ++ ) { cdf_print_property_name ( buf , sizeof ( buf ) , info [ i ] . pi_id ) ; switch ( info [ i ] . pi_type ) { case CDF_NULL : break ; case CDF_SIGNED16 : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%hd\" , buf , info [ i ] . pi_s16 ) == - 1 ) return - 1 ; break ; case CDF_SIGNED32 : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%d\" , buf , info [ i ] . pi_s32 ) == - 1 ) return - 1 ; break ; case CDF_UNSIGNED32 : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%u\" , buf , info [ i ] . pi_u32 ) == - 1 ) return - 1 ; break ; case CDF_FLOAT : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%g\" , buf , info [ i ] . pi_f ) == - 1 ) return - 1 ; break ; case CDF_DOUBLE : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%g\" , buf , info [ i ] . pi_d ) == - 1 ) return - 1 ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : len = info [ i ] . pi_str . s_len ; if ( len > 1 ) { char vbuf [ 1024 ] ; size_t j , k = 1 ; if ( info [ i ] . pi_type == CDF_LENGTH32_WSTRING ) k ++ ; s = info [ i ] . pi_str . s_buf ; for ( j = 0 ; j < sizeof ( vbuf ) && len -- ; j ++ , s += k ) { if ( * s == '\\\\0' ) break ; if ( isprint ( ( unsigned char ) * s ) ) vbuf [ j ] = * s ; } if ( j == sizeof ( vbuf ) ) -- j ; vbuf [ j ] = '\\\\0' ; if ( NOTMIME ( ms ) ) { if ( vbuf [ 0 ] ) { if ( file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%s\" , buf , vbuf ) == - 1 ) return - 1 ; } } else if ( str == NULL && info [ i ] . pi_id == CDF_PROPERTY_NAME_OF_APPLICATION ) { str = cdf_app_to_mime ( vbuf , app2mime ) ; } } break ; case CDF_FILETIME : tp = info [ i ] . pi_tp ; if ( tp != 0 ) { char tbuf [ 64 ] ; if ( tp < 1000000000000000LL ) { cdf_print_elapsed_time ( tbuf , sizeof ( tbuf ) , tp ) ; if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%s\" , buf , tbuf ) == - 1 ) return - 1 ; } else { char * c , * ec ; cdf_timestamp_to_timespec ( & ts , tp ) ; c = cdf_ctime ( & ts . tv_sec , tbuf ) ; if ( c != NULL && ( ec = strchr ( c , '\\\\n' ) ) != NULL ) * ec = '\\\\0' ; if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%s\" , buf , c ) == - 1 ) return - 1 ; } } break ; case CDF_CLIPBOARD : break ; default : return - 1 ; } } if ( ! NOTMIME ( ms ) ) { if ( str == NULL ) return 0 ; if ( file_printf ( ms , \"application/%s\" , str ) == - 1 ) return - 1 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count , const cdf_directory_t * root_storage <S2SV_ModEnd> ) { size_t <S2SV_ModStart> ( ms ) && root_storage <S2SV_ModStart> = cdf_clsid_to_mime ( root_storage -> d_storage_uuid <S2SV_ModEnd> , clsid2mime )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2925\n\n```\nCWE-254 static int prepend_path ( const struct path * path , const struct path * root , char * * buffer , int * buflen ) { struct dentry * dentry ; struct vfsmount * vfsmnt ; struct mount * mnt ; int error = 0 ; unsigned seq , m_seq = 0 ; char * bptr ; int blen ; rcu_read_lock ( ) ; restart_mnt : read_seqbegin_or_lock ( & mount_lock , & m_seq ) ; seq = 0 ; rcu_read_lock ( ) ; restart : bptr = * buffer ; blen = * buflen ; error = 0 ; dentry = path -> dentry ; vfsmnt = path -> mnt ; mnt = real_mount ( vfsmnt ) ; read_seqbegin_or_lock ( & rename_lock , & seq ) ; while ( dentry != root -> dentry || vfsmnt != root -> mnt ) { struct dentry * parent ; if ( dentry == vfsmnt -> mnt_root || IS_ROOT ( dentry ) ) { <S2SV_StartBug> struct mount * parent = ACCESS_ONCE ( mnt -> mnt_parent ) ; <S2SV_EndBug> if ( mnt != parent ) { dentry = ACCESS_ONCE ( mnt -> mnt_mountpoint ) ; mnt = parent ; vfsmnt = & mnt -> mnt ; continue ; } if ( ! error ) error = is_mounted ( vfsmnt ) ? 1 : 2 ; break ; } parent = dentry -> d_parent ; prefetch ( parent ) ; error = prepend_name ( & bptr , & blen , & dentry -> d_name ) ; if ( error ) break ; dentry = parent ; } if ( ! ( seq & 1 ) ) rcu_read_unlock ( ) ; if ( need_seqretry ( & rename_lock , seq ) ) { seq = 1 ; goto restart ; } done_seqretry ( & rename_lock , seq ) ; if ( ! ( m_seq & 1 ) ) rcu_read_unlock ( ) ; if ( need_seqretry ( & mount_lock , m_seq ) ) { m_seq = 1 ; goto restart_mnt ; } done_seqretry ( & mount_lock , m_seq ) ; if ( error >= 0 && bptr == * buffer ) { if ( -- blen < 0 ) error = - ENAMETOOLONG ; else * -- bptr = '/' ; } * buffer = bptr ; * buflen = blen ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mnt_parent ) ; if ( dentry != vfsmnt -> mnt_root ) { bptr = * buffer ; blen = * buflen ; error = 3 ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12985\n\n```\nCWE-125 int mobility_print ( netdissect_options * ndo , const u_char * bp , const u_char * bp2 _U_ ) { const struct ip6_mobility * mh ; const u_char * ep ; unsigned mhlen , hlen ; uint8_t type ; mh = ( const struct ip6_mobility * ) bp ; ep = ndo -> ndo_snapend ; if ( ! ND_TTEST ( mh -> ip6m_len ) ) { mhlen = ep - bp ; goto trunc ; } mhlen = ( mh -> ip6m_len + 1 ) << 3 ; ND_TCHECK ( mh -> ip6m_type ) ; type = mh -> ip6m_type ; if ( type <= IP6M_MAX && mhlen < ip6m_hdrlen [ type ] ) { ND_PRINT ( ( ndo , \"(header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>for<S2SV_blank>type<S2SV_blank>%u)\" , mhlen , type ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"mobility:<S2SV_blank>%s\" , tok2str ( ip6m_str , \"type-#%u\" , type ) ) ) ; switch ( type ) { case IP6M_BINDING_REQUEST : hlen = IP6M_MINLEN ; break ; case IP6M_HOME_TEST_INIT : case IP6M_CAREOF_TEST_INIT : hlen = IP6M_MINLEN ; if ( ndo -> ndo_vflag ) { ND_TCHECK2 ( * mh , hlen + 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Init<S2SV_blank>Cookie=%08x:%08x\" , type == IP6M_HOME_TEST_INIT ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; break ; case IP6M_HOME_TEST : case IP6M_CAREOF_TEST : ND_TCHECK ( mh -> ip6m_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>nonce<S2SV_blank>id=0x%x\" , EXTRACT_16BITS ( & mh -> ip6m_data16 [ 0 ] ) ) ) ; hlen = IP6M_MINLEN ; if ( ndo -> ndo_vflag ) { ND_TCHECK2 ( * mh , hlen + 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Init<S2SV_blank>Cookie=%08x:%08x\" , type == IP6M_HOME_TEST ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; if ( ndo -> ndo_vflag ) { ND_TCHECK2 ( * mh , hlen + 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Keygen<S2SV_blank>Token=%08x:%08x\" , type == IP6M_HOME_TEST ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; break ; case IP6M_BINDING_UPDATE : ND_TCHECK ( mh -> ip6m_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>seq#=%u\" , EXTRACT_16BITS ( & mh -> ip6m_data16 [ 0 ] ) ) ) ; hlen = IP6M_MINLEN ; ND_TCHECK2 ( * mh , hlen + 1 ) ; if ( bp [ hlen ] & 0xf0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( bp [ hlen ] & 0x80 ) ND_PRINT ( ( ndo , \"A\" ) ) ; if ( bp [ hlen ] & 0x40 ) ND_PRINT ( ( ndo , \"H\" ) ) ; if ( bp [ hlen ] & 0x20 ) ND_PRINT ( ( ndo , \"L\" ) ) ; if ( bp [ hlen ] & 0x10 ) ND_PRINT ( ( ndo , \"K\" ) ) ; hlen += 1 ; hlen += 1 ; ND_TCHECK2 ( * mh , hlen + 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>lifetime=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) << 2 ) ) ; hlen += 2 ; break ; case IP6M_BINDING_ACK : ND_TCHECK ( mh -> ip6m_data8 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>status=%u\" , mh -> ip6m_data8 [ 0 ] ) ) ; if ( mh -> ip6m_data8 [ 1 ] & 0x80 ) ND_PRINT ( ( ndo , \"<S2SV_blank>K\" ) ) ; hlen = IP6M_MINLEN ; ND_TCHECK2 ( * mh , hlen + 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>seq#=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) ) ) ; hlen += 2 ; ND_TCHECK2 ( * mh , hlen + 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>lifetime=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) << 2 ) ) ; hlen += 2 ; break ; case IP6M_BINDING_ERROR : ND_TCHECK ( mh -> ip6m_data8 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>status=%u\" , mh -> ip6m_data8 [ 0 ] ) ) ; hlen = IP6M_MINLEN ; ND_TCHECK2 ( * mh , hlen + 16 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>homeaddr<S2SV_blank>%s\" , ip6addr_string ( ndo , & bp [ hlen ] ) ) ) ; hlen += 16 ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>len=%u\" , mh -> ip6m_len ) ) ; return ( mhlen ) ; break ; } if ( ndo -> ndo_vflag ) if ( mobility_opt_print ( ndo , & bp [ hlen ] , mhlen - hlen ) ) goto trunc ; return ( mhlen ) ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_StartBug> return ( mhlen ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return ( - 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1944\n\n```\nCWE-200 <S2SV_StartBug> static bool tailmatch ( const char * little , const char * bigone ) <S2SV_EndBug> { <S2SV_StartBug> size_t littlelen = strlen ( little ) ; <S2SV_EndBug> <S2SV_StartBug> size_t biglen = strlen ( bigone ) ; <S2SV_EndBug> <S2SV_StartBug> if ( littlelen > biglen ) <S2SV_EndBug> return FALSE ; <S2SV_StartBug> return Curl_raw_equal ( little , bigone + biglen - littlelen ) ? TRUE : FALSE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const char * cooke_domain <S2SV_ModEnd> , const char <S2SV_ModStart> const char * hostname <S2SV_ModEnd> ) { size_t <S2SV_ModStart> ) { size_t cookie_domain_len <S2SV_ModEnd> = strlen ( <S2SV_ModStart> = strlen ( cooke_domain <S2SV_ModEnd> ) ; size_t <S2SV_ModStart> ) ; size_t hostname_len <S2SV_ModEnd> = strlen ( <S2SV_ModStart> = strlen ( hostname <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; if ( hostname_len < cookie_domain_len <S2SV_ModEnd> ) return FALSE <S2SV_ModStart> return FALSE ; if ( ! Curl_raw_equal ( cooke_domain , hostname + hostname_len - cookie_domain_len ) ) return FALSE ; if ( hostname_len == cookie_domain_len ) return TRUE ; if ( '.' == * ( hostname + hostname_len - cookie_domain_len - 1 ) ) return TRUE ; return <S2SV_ModEnd> FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16805\n\n```\nCWE-125 static void r_bin_dwarf_dump_debug_info ( FILE * f , const RBinDwarfDebugInfo * inf ) { size_t i , j , k ; RBinDwarfDIE * dies ; RBinDwarfAttrValue * values ; if ( ! inf || ! f ) { return ; } for ( i = 0 ; i < inf -> length ; i ++ ) { fprintf ( f , \"<S2SV_blank><S2SV_blank>Compilation<S2SV_blank>Unit<S2SV_blank>@<S2SV_blank>offset<S2SV_blank>0x%\" PFMT64x \":\\\\n\" , inf -> comp_units [ i ] . offset ) ; fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank>Length:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%x\\\\n\" , inf -> comp_units [ i ] . hdr . length ) ; fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank>Version:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , inf -> comp_units [ i ] . hdr . version ) ; fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank>Abbrev<S2SV_blank>Offset:<S2SV_blank>0x%x\\\\n\" , inf -> comp_units [ i ] . hdr . abbrev_offset ) ; fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank>Pointer<S2SV_blank>Size:<S2SV_blank><S2SV_blank>%d\\\\n\" , inf -> comp_units [ i ] . hdr . pointer_size ) ; dies = inf -> comp_units [ i ] . dies ; for ( j = 0 ; j < inf -> comp_units [ i ] . length ; j ++ ) { fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Abbrev<S2SV_blank>Number:<S2SV_blank>%\" PFMT64u \"<S2SV_blank>\" , dies [ j ] . abbrev_code ) ; if ( dies [ j ] . tag && dies [ j ] . tag <= DW_TAG_volatile_type && dwarf_tag_name_encodings [ dies [ j ] . tag ] ) { fprintf ( f , \"(%s)\\\\n\" , dwarf_tag_name_encodings [ dies [ j ] . tag ] ) ; } else { fprintf ( f , \"(Unknown<S2SV_blank>abbrev<S2SV_blank>tag)\\\\n\" ) ; } if ( ! dies [ j ] . abbrev_code ) { continue ; } values = dies [ j ] . attr_values ; for ( k = 0 ; k < dies [ j ] . length ; k ++ ) { <S2SV_StartBug> if ( ! values [ k ] . name ) <S2SV_EndBug> continue ; if ( values [ k ] . name < DW_AT_vtable_elem_location && dwarf_attr_encodings [ values [ k ] . name ] ) { fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%-18s<S2SV_blank>:<S2SV_blank>\" , dwarf_attr_encodings [ values [ k ] . name ] ) ; } else { fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>TODO\\\\t\" ) ; } r_bin_dwarf_dump_attr_value ( & values [ k ] , f ) ; fprintf ( f , \"\\\\n\" ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . name ) { continue ; } <S2SV_ModEnd> if ( values\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8692\n\n```\nCWE-369 static int jpc_siz_getparms ( jpc_ms_t * ms , jpc_cstate_t * cstate , jas_stream_t * in ) { jpc_siz_t * siz = & ms -> parms . siz ; unsigned int i ; uint_fast8_t tmp ; cstate = 0 ; if ( jpc_getuint16 ( in , & siz -> caps ) || jpc_getuint32 ( in , & siz -> width ) || jpc_getuint32 ( in , & siz -> height ) || jpc_getuint32 ( in , & siz -> xoff ) || jpc_getuint32 ( in , & siz -> yoff ) || jpc_getuint32 ( in , & siz -> tilewidth ) || jpc_getuint32 ( in , & siz -> tileheight ) || jpc_getuint32 ( in , & siz -> tilexoff ) || jpc_getuint32 ( in , & siz -> tileyoff ) || jpc_getuint16 ( in , & siz -> numcomps ) ) { return - 1 ; } if ( ! siz -> width || ! siz -> height || ! siz -> tilewidth || ! siz -> tileheight || ! siz -> numcomps ) { return - 1 ; } if ( ! ( siz -> comps = jas_alloc2 ( siz -> numcomps , sizeof ( jpc_sizcomp_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < siz -> numcomps ; ++ i ) { if ( jpc_getuint8 ( in , & tmp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . hsamp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . vsamp ) ) { jas_free ( siz -> comps ) ; return - 1 ; } <S2SV_StartBug> siz -> comps [ i ] . sgnd = ( tmp >> 7 ) & 1 ; <S2SV_EndBug> siz -> comps [ i ] . prec = ( tmp & 0x7f ) + 1 ; } if ( jas_stream_eof ( in ) ) { jas_free ( siz -> comps ) ; return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; } if ( siz -> comps [ i ] . hsamp == 0 || siz -> comps [ i ] . hsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>XRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . hsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; } if ( siz -> comps [ i ] . vsamp == 0 || siz -> comps [ i ] . vsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>YRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . vsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 static int ssl_scan_serverhello_tlsext ( SSL * s , PACKET * pkt , int * al ) { unsigned int length , type , size ; int tlsext_servername = 0 ; int renegotiate_seen = 0 ; # ifndef OPENSSL_NO_NEXTPROTONEG s -> s3 -> next_proto_neg_seen = 0 ; # endif s -> tlsext_ticket_expected = 0 ; OPENSSL_free ( s -> s3 -> alpn_selected ) ; s -> s3 -> alpn_selected = NULL ; # ifndef OPENSSL_NO_HEARTBEATS s -> tlsext_heartbeat &= ~ ( SSL_DTLSEXT_HB_ENABLED | SSL_DTLSEXT_HB_DONT_SEND_REQUESTS ) ; # endif <S2SV_StartBug> s -> s3 -> flags &= ~ TLS1_FLAGS_ENCRYPT_THEN_MAC ; <S2SV_EndBug> s -> s3 -> flags &= ~ TLS1_FLAGS_RECEIVED_EXTMS ; if ( ! PACKET_get_net_2 ( pkt , & length ) ) goto ri_check ; if ( PACKET_remaining ( pkt ) != length ) { * al = SSL_AD_DECODE_ERROR ; return 0 ; } if ( ! tls1_check_duplicate_extensions ( pkt ) ) { * al = SSL_AD_DECODE_ERROR ; return 0 ; } while ( PACKET_get_net_2 ( pkt , & type ) && PACKET_get_net_2 ( pkt , & size ) ) { const unsigned char * data ; PACKET spkt ; if ( ! PACKET_get_sub_packet ( pkt , & spkt , size ) || ! PACKET_peek_bytes ( & spkt , & data , size ) ) goto ri_check ; if ( s -> tlsext_debug_cb ) s -> tlsext_debug_cb ( s , 1 , type , data , size , s -> tlsext_debug_arg ) ; if ( type == TLSEXT_TYPE_renegotiate ) { if ( ! ssl_parse_serverhello_renegotiate_ext ( s , & spkt , al ) ) return 0 ; renegotiate_seen = 1 ; } else if ( s -> version == SSL3_VERSION ) { } else if ( type == TLSEXT_TYPE_server_name ) { if ( s -> tlsext_hostname == NULL || size > 0 ) { * al = TLS1_AD_UNRECOGNIZED_NAME ; return 0 ; } tlsext_servername = 1 ; } # ifndef OPENSSL_NO_EC else if ( type == TLSEXT_TYPE_ec_point_formats ) { unsigned int ecpointformatlist_length ; if ( ! PACKET_get_1 ( & spkt , & ecpointformatlist_length ) || ecpointformatlist_length != size - 1 ) { * al = TLS1_AD_DECODE_ERROR ; return 0 ; } if ( ! s -> hit ) { s -> session -> tlsext_ecpointformatlist_length = 0 ; OPENSSL_free ( s -> session -> tlsext_ecpointformatlist ) ; if ( ( s -> session -> tlsext_ecpointformatlist = OPENSSL_malloc ( ecpointformatlist_length ) ) == NULL ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } s -> session -> tlsext_ecpointformatlist_length = ecpointformatlist_length ; if ( ! PACKET_copy_bytes ( & spkt , s -> session -> tlsext_ecpointformatlist , ecpointformatlist_length ) ) { * al = TLS1_AD_DECODE_ERROR ; return 0 ; } } } # endif else if ( type == TLSEXT_TYPE_session_ticket ) { if ( s -> tls_session_ticket_ext_cb && ! s -> tls_session_ticket_ext_cb ( s , data , size , s -> tls_session_ticket_ext_cb_arg ) ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } if ( ! tls_use_ticket ( s ) || ( size > 0 ) ) { * al = TLS1_AD_UNSUPPORTED_EXTENSION ; return 0 ; } s -> tlsext_ticket_expected = 1 ; } else if ( type == TLSEXT_TYPE_status_request ) { if ( ( s -> tlsext_status_type == - 1 ) || ( size > 0 ) ) { * al = TLS1_AD_UNSUPPORTED_EXTENSION ; return 0 ; } s -> tlsext_status_expected = 1 ; } # ifndef OPENSSL_NO_CT else if ( type == TLSEXT_TYPE_signed_certificate_timestamp && s -> ct_validation_callback != NULL ) { if ( s -> tlsext_scts != NULL ) { OPENSSL_free ( s -> tlsext_scts ) ; s -> tlsext_scts = NULL ; } s -> tlsext_scts_len = size ; if ( size > 0 ) { s -> tlsext_scts = OPENSSL_malloc ( size ) ; if ( s -> tlsext_scts == NULL ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } memcpy ( s -> tlsext_scts , data , size ) ; } } # endif # ifndef OPENSSL_NO_NEXTPROTONEG else if ( type == TLSEXT_TYPE_next_proto_neg && s -> s3 -> tmp . finish_md_len == 0 ) { unsigned char * selected ; unsigned char selected_len ; if ( s -> ctx -> next_proto_select_cb == NULL ) { * al = TLS1_AD_UNSUPPORTED_EXTENSION ; return 0 ; } if ( ! ssl_next_proto_validate ( & spkt ) ) { * al = TLS1_AD_DECODE_ERROR ; return 0 ; } if ( s -> ctx -> next_proto_select_cb ( s , & selected , & selected_len , data , size , s -> ctx -> next_proto_select_cb_arg ) != SSL_TLSEXT_ERR_OK ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } OPENSSL_free ( s -> next_proto_negotiated ) ; s -> next_proto_negotiated = OPENSSL_malloc ( selected_len ) ; if ( s -> next_proto_negotiated == NULL ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } memcpy ( s -> next_proto_negotiated , selected , selected_len ) ; s -> next_proto_negotiated_len = selected_len ; s -> s3 -> next_proto_neg_seen = 1 ; } # endif else if ( type == TLSEXT_TYPE_application_layer_protocol_negotiation ) { unsigned len ; if ( ! s -> s3 -> alpn_sent ) { * al = TLS1_AD_UNSUPPORTED_EXTENSION ; return 0 ; } if ( ! PACKET_get_net_2 ( & spkt , & len ) || PACKET_remaining ( & spkt ) != len || ! PACKET_get_1 ( & spkt , & len ) || PACKET_remaining ( & spkt ) != len ) { * al = TLS1_AD_DECODE_ERROR ; return 0 ; } OPENSSL_free ( s -> s3 -> alpn_selected ) ; s -> s3 -> alpn_selected = OPENSSL_malloc ( len ) ; if ( s -> s3 -> alpn_selected == NULL ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } if ( ! PACKET_copy_bytes ( & spkt , s -> s3 -> alpn_selected , len ) ) { * al = TLS1_AD_DECODE_ERROR ; return 0 ; } s -> s3 -> alpn_selected_len = len ; } # ifndef OPENSSL_NO_HEARTBEATS else if ( SSL_IS_DTLS ( s ) && type == TLSEXT_TYPE_heartbeat ) { unsigned int hbtype ; if ( ! PACKET_get_1 ( & spkt , & hbtype ) ) { * al = SSL_AD_DECODE_ERROR ; return 0 ; } switch ( hbtype ) { case 0x01 : s -> tlsext_heartbeat |= SSL_DTLSEXT_HB_ENABLED ; break ; case 0x02 : s -> tlsext_heartbeat |= SSL_DTLSEXT_HB_ENABLED ; s -> tlsext_heartbeat |= SSL_DTLSEXT_HB_DONT_SEND_REQUESTS ; break ; default : * al = SSL_AD_ILLEGAL_PARAMETER ; return 0 ; } } # endif # ifndef OPENSSL_NO_SRTP else if ( SSL_IS_DTLS ( s ) && type == TLSEXT_TYPE_use_srtp ) { if ( ssl_parse_serverhello_use_srtp_ext ( s , & spkt , al ) ) return 0 ; } # endif else if ( type == TLSEXT_TYPE_encrypt_then_mac ) { if ( s -> s3 -> tmp . new_cipher -> algorithm_mac != SSL_AEAD && s -> s3 -> tmp . new_cipher -> algorithm_enc != SSL_RC4 ) <S2SV_StartBug> s -> s3 -> flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC ; <S2SV_EndBug> } else if ( type == TLSEXT_TYPE_extended_master_secret ) { s -> s3 -> flags |= TLS1_FLAGS_RECEIVED_EXTMS ; if ( ! s -> hit ) s -> session -> flags |= SSL_SESS_FLAG_EXTMS ; } else if ( custom_ext_parse ( s , 0 , type , data , size , al ) <= 0 ) return 0 ; } if ( PACKET_remaining ( pkt ) != 0 ) { * al = SSL_AD_DECODE_ERROR ; return 0 ; } if ( ! s -> hit && tlsext_servername == 1 ) { if ( s -> tlsext_hostname ) { if ( s -> session -> tlsext_hostname == NULL ) { s -> session -> tlsext_hostname = OPENSSL_strdup ( s -> tlsext_hostname ) ; if ( ! s -> session -> tlsext_hostname ) { * al = SSL_AD_UNRECOGNIZED_NAME ; return 0 ; } } else { * al = SSL_AD_DECODE_ERROR ; return 0 ; } } } ri_check : if ( ! renegotiate_seen && ! ( s -> options & SSL_OP_LEGACY_SERVER_CONNECT ) && ! ( s -> options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION ) ) { * al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT , SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED ) ; return 0 ; } if ( s -> hit ) { if ( ! ( s -> s3 -> flags & TLS1_FLAGS_RECEIVED_EXTMS ) != ! ( s -> session -> flags & SSL_SESS_FLAG_EXTMS ) ) { * al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL_SCAN_SERVERHELLO_TLSEXT , SSL_R_INCONSISTENT_EXTMS ) ; return 0 ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif s -> tlsext_use_etm = 0 <S2SV_ModEnd> ; s -> <S2SV_ModStart> ) s -> tlsext_use_etm = 1 <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13225\n\n```\nCWE-476 static int compile_bag_node ( BagNode * node , regex_t * reg , ScanEnv * env ) { int r , len ; switch ( node -> type ) { case BAG_MEMORY : r = compile_bag_memory_node ( node , reg , env ) ; break ; case BAG_OPTION : r = compile_option_node ( node , reg , env ) ; break ; case BAG_STOP_BACKTRACK : if ( NODE_IS_STOP_BT_SIMPLE_REPEAT ( node ) ) { QuantNode * qn = QUANT_ ( NODE_BAG_BODY ( node ) ) ; r = compile_tree_n_times ( NODE_QUANT_BODY ( qn ) , qn -> lower , reg , env ) ; if ( r != 0 ) return r ; len = compile_length_tree ( NODE_QUANT_BODY ( qn ) , reg ) ; if ( len < 0 ) return len ; r = add_op ( reg , OP_PUSH ) ; if ( r != 0 ) return r ; COP ( reg ) -> push . addr = SIZE_INC_OP + len + SIZE_OP_POP_OUT + SIZE_OP_JUMP ; r = compile_tree ( NODE_QUANT_BODY ( qn ) , reg , env ) ; if ( r != 0 ) return r ; r = add_op ( reg , OP_POP_OUT ) ; if ( r != 0 ) return r ; r = add_op ( reg , OP_JUMP ) ; if ( r != 0 ) return r ; COP ( reg ) -> jump . addr = - ( ( int ) SIZE_OP_PUSH + len + ( int ) SIZE_OP_POP_OUT ) ; } else { r = add_op ( reg , OP_ATOMIC_START ) ; if ( r != 0 ) return r ; r = compile_tree ( NODE_BAG_BODY ( node ) , reg , env ) ; if ( r != 0 ) return r ; r = add_op ( reg , OP_ATOMIC_END ) ; } break ; case BAG_IF_ELSE : { <S2SV_StartBug> int cond_len , then_len , jump_len ; <S2SV_EndBug> Node * cond = NODE_BAG_BODY ( node ) ; Node * Then = node -> te . Then ; Node * Else = node -> te . Else ; r = add_op ( reg , OP_ATOMIC_START ) ; if ( r != 0 ) return r ; cond_len = compile_length_tree ( cond , reg ) ; if ( cond_len < 0 ) return cond_len ; if ( IS_NOT_NULL ( Then ) ) { then_len = compile_length_tree ( Then , reg ) ; if ( then_len < 0 ) return then_len ; } else then_len = 0 ; <S2SV_StartBug> jump_len = cond_len + then_len + SIZE_OP_ATOMIC_END ; <S2SV_EndBug> if ( IS_NOT_NULL ( Else ) ) jump_len += SIZE_OP_JUMP ; r = add_op ( reg , OP_PUSH ) ; if ( r != 0 ) return r ; COP ( reg ) -> push . addr = SIZE_INC_OP + jump_len ; r = compile_tree ( cond , reg , env ) ; if ( r != 0 ) return r ; r = add_op ( reg , OP_ATOMIC_END ) ; if ( r != 0 ) return r ; if ( IS_NOT_NULL ( Then ) ) { r = compile_tree ( Then , reg , env ) ; if ( r != 0 ) return r ; } if ( IS_NOT_NULL ( Else ) ) { <S2SV_StartBug> int else_len = compile_length_tree ( Else , reg ) ; <S2SV_EndBug> r = add_op ( reg , OP_JUMP ) ; if ( r != 0 ) return r ; <S2SV_StartBug> COP ( reg ) -> jump . addr = else_len + SIZE_INC_OP ; <S2SV_EndBug> <S2SV_StartBug> r = compile_tree ( Else , reg , env ) ; <S2SV_EndBug> } } break ; } return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , then_len , else_len , <S2SV_ModStart> then_len + SIZE_OP_ATOMIC_END + <S2SV_ModEnd> SIZE_OP_JUMP ; r <S2SV_ModStart> ) ) { <S2SV_ModEnd> else_len = compile_length_tree <S2SV_ModStart> , reg ) ; if ( else_len < 0 ) return else_len ; } else else_len = 0 <S2SV_ModStart> . addr = SIZE_OP_ATOMIC_END + <S2SV_ModStart> ; r = add_op ( reg , OP_ATOMIC_END ) ; if ( r != 0 ) return r ; if ( IS_NOT_NULL ( Else ) ) { r =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr_rmtval_get ( struct xfs_da_args * args ) { struct xfs_bmbt_irec map [ ATTR_RMTVALUE_MAPSIZE ] ; struct xfs_mount * mp = args -> dp -> i_mount ; struct xfs_buf * bp ; xfs_dablk_t lblkno = args -> rmtblkno ; __uint8_t * dst = args -> value ; <S2SV_StartBug> int valuelen = args -> valuelen ; <S2SV_EndBug> int nmap ; int error ; int blkcnt = args -> rmtblkcnt ; int i ; int offset = 0 ; trace_xfs_attr_rmtval_get ( args ) ; <S2SV_StartBug> ASSERT ( ! ( args -> flags & ATTR_KERNOVAL ) ) ; <S2SV_EndBug> while ( valuelen > 0 ) { nmap = ATTR_RMTVALUE_MAPSIZE ; error = xfs_bmapi_read ( args -> dp , ( xfs_fileoff_t ) lblkno , blkcnt , map , & nmap , XFS_BMAPI_ATTRFORK ) ; if ( error ) return error ; ASSERT ( nmap >= 1 ) ; for ( i = 0 ; ( i < nmap ) && ( valuelen > 0 ) ; i ++ ) { xfs_daddr_t dblkno ; int dblkcnt ; ASSERT ( ( map [ i ] . br_startblock != DELAYSTARTBLOCK ) && ( map [ i ] . br_startblock != HOLESTARTBLOCK ) ) ; dblkno = XFS_FSB_TO_DADDR ( mp , map [ i ] . br_startblock ) ; dblkcnt = XFS_FSB_TO_BB ( mp , map [ i ] . br_blockcount ) ; error = xfs_trans_read_buf ( mp , NULL , mp -> m_ddev_targp , dblkno , dblkcnt , 0 , & bp , & xfs_attr3_rmt_buf_ops ) ; if ( error ) return error ; error = xfs_attr_rmtval_copyout ( mp , bp , args -> dp -> i_ino , & offset , & valuelen , & dst ) ; xfs_buf_relse ( bp ) ; if ( error ) return error ; lblkno += map [ i ] . br_blockcount ; blkcnt -= map [ i ] . br_blockcount ; } } ASSERT ( valuelen == 0 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int valuelen <S2SV_ModEnd> ; int nmap <S2SV_ModStart> ATTR_KERNOVAL ) ) ; ASSERT ( args -> rmtvaluelen == args -> valuelen ) ; valuelen = args -> rmtvaluelen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4483\n\n```\nCWE-189 void ipc_rcu_putref ( void * ptr ) { <S2SV_StartBug> if ( -- container_of ( ptr , struct ipc_rcu_hdr , data ) -> refcount > 0 ) <S2SV_EndBug> return ; if ( container_of ( ptr , struct ipc_rcu_hdr , data ) -> is_vmalloc ) { call_rcu ( & container_of ( ptr , struct ipc_rcu_grace , data ) -> rcu , ipc_schedule_free ) ; } else { kfree_rcu ( container_of ( ptr , struct ipc_rcu_grace , data ) , rcu ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ! atomic_dec_and_test ( & <S2SV_ModEnd> container_of ( ptr <S2SV_ModStart> ) -> refcount ) <S2SV_ModEnd> ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13690\n\n```\nCWE-125 static const u_char * ikev2_ke_print ( netdissect_options * ndo , u_char tpay , const struct isakmp_gen * ext , u_int item_len _U_ , const u_char * ep _U_ , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { struct ikev2_ke ke ; const struct ikev2_ke * k ; k = ( const struct ikev2_ke * ) ext ; <S2SV_StartBug> ND_TCHECK ( * ext ) ; <S2SV_EndBug> UNALIGNED_MEMCPY ( & ke , ext , sizeof ( ke ) ) ; ikev2_pay_print ( ndo , NPSTR ( tpay ) , ke . h . critical ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%u<S2SV_blank>group=%s\" , ntohs ( ke . h . len ) - 8 , STR_OR_ID ( ntohs ( ke . ke_group ) , dh_p_map ) ) ) ; if ( 2 < ndo -> ndo_vflag && 8 < ntohs ( ke . h . len ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( k + 1 ) , ntohs ( ke . h . len ) - 8 ) ) goto trunc ; } return ( const u_char * ) ext + ntohs ( ke . h . len ) ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( tpay ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ND_TCHECK ( * k <S2SV_ModEnd> ) ; UNALIGNED_MEMCPY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7501\n\n```\nCWE-59 <S2SV_StartBug> static int expandRegular ( rpmfi fi , const char * dest , rpmpsm psm , int nodigest , int nocontent ) <S2SV_EndBug> { FD_t wfd = NULL ; int rc = 0 ; { mode_t old_umask = umask ( 0577 ) ; <S2SV_StartBug> wfd = Fopen ( dest , \"w.ufdio\" ) ; <S2SV_EndBug> <S2SV_StartBug> umask ( old_umask ) ; <S2SV_EndBug> } if ( Ferror ( wfd ) ) { rc = RPMERR_OPEN_FAILED ; goto exit ; } if ( ! nocontent ) rc = rpmfiArchiveReadToFilePsm ( fi , wfd , nodigest , psm ) ; exit : if ( wfd ) { int myerrno = errno ; Fclose ( wfd ) ; errno = myerrno ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , rpmpsm psm , int exclusive <S2SV_ModStart> ( dest , exclusive ? \"wx.ufdio\" : \"a.ufdio\" <S2SV_ModEnd> ) ; umask <S2SV_ModStart> old_umask ) ; if ( ! exclusive && wfd != NULL && ! linkSane ( wfd , dest ) ) { rc = RPMERR_OPEN_FAILED ; goto exit ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jas_image_t * jas_image_create0 ( ) { jas_image_t * image ; if ( ! ( image = jas_malloc ( sizeof ( jas_image_t ) ) ) ) { return 0 ; } image -> tlx_ = 0 ; image -> tly_ = 0 ; image -> brx_ = 0 ; image -> bry_ = 0 ; image -> clrspc_ = JAS_CLRSPC_UNKNOWN ; image -> numcmpts_ = 0 ; image -> maxcmpts_ = 0 ; image -> cmpts_ = 0 ; <S2SV_StartBug> image -> inmem_ = true ; <S2SV_EndBug> image -> cmprof_ = 0 ; return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; image -> <S2SV_ModEnd> cmprof_ = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14230\n\n```\nCWE-20 static int mboxlist_do_find ( struct find_rock * rock , const strarray_t * patterns ) { const char * userid = rock -> userid ; int isadmin = rock -> isadmin ; int crossdomains = config_getswitch ( IMAPOPT_CROSSDOMAINS ) ; char inbox [ MAX_MAILBOX_BUFFER ] ; size_t inboxlen = 0 ; size_t prefixlen , len ; size_t domainlen = 0 ; size_t userlen = userid ? strlen ( userid ) : 0 ; char domainpat [ MAX_MAILBOX_BUFFER ] ; char commonpat [ MAX_MAILBOX_BUFFER ] ; int r = 0 ; int i ; const char * p ; if ( patterns -> count < 1 ) return 0 ; for ( i = 0 ; i < patterns -> count ; i ++ ) { glob * g = glob_init ( strarray_nth ( patterns , i ) , rock -> namespace -> hier_sep ) ; ptrarray_append ( & rock -> globs , g ) ; } if ( config_virtdomains && userid && ( p = strchr ( userid , '@' ) ) ) { userlen = p - userid ; domainlen = strlen ( p ) ; snprintf ( domainpat , sizeof ( domainpat ) , \"%s!\" , p + 1 ) ; } else domainpat [ 0 ] = '\\\\0' ; if ( userid && ( ! ( p = strchr ( userid , rock -> namespace -> hier_sep ) ) || ( ( p - userid ) > ( int ) userlen ) ) && strlen ( userid ) + 7 < MAX_MAILBOX_BUFFER ) { char * t , * tmpuser = NULL ; const char * inboxuser ; if ( domainlen ) snprintf ( inbox , sizeof ( inbox ) , \"%s!\" , userid + userlen + 1 ) ; if ( rock -> namespace -> hier_sep == '/' && ( p = strchr ( userid , '.' ) ) ) { tmpuser = xmalloc ( userlen ) ; memcpy ( tmpuser , userid , userlen ) ; t = tmpuser + ( p - userid ) ; while ( t < ( tmpuser + userlen ) ) { if ( * t == '.' ) * t = '^' ; t ++ ; } inboxuser = tmpuser ; } else inboxuser = userid ; snprintf ( inbox + domainlen , sizeof ( inbox ) - domainlen , \"user.%.*s.INBOX.\" , ( int ) userlen , inboxuser ) ; free ( tmpuser ) ; inboxlen = strlen ( inbox ) - 7 ; } else { userid = 0 ; } const char * firstpat = strarray_nth ( patterns , 0 ) ; for ( prefixlen = 0 ; firstpat [ prefixlen ] ; prefixlen ++ ) { if ( prefixlen >= MAX_MAILBOX_NAME ) { r = IMAP_MAILBOX_BADNAME ; goto done ; } char c = firstpat [ prefixlen ] ; for ( i = 1 ; i < patterns -> count ; i ++ ) { const char * pat = strarray_nth ( patterns , i ) ; if ( pat [ prefixlen ] != c ) break ; } if ( i < patterns -> count ) break ; if ( c == '*' || c == '%' || c == '?' ) break ; commonpat [ prefixlen ] = c ; } commonpat [ prefixlen ] = '\\\\0' ; if ( patterns -> count == 1 ) { if ( ! strcmp ( firstpat + prefixlen , \"%\" ) ) rock -> singlepercent = 2 ; if ( ! strcmp ( firstpat + prefixlen , \"*%\" ) ) rock -> singlepercent = 1 ; } if ( userid && ! isadmin ) { rock -> mb_category = MBNAME_INBOX ; r = cyrusdb_forone ( rock -> db , inbox , inboxlen , & find_p , & find_cb , rock , NULL ) ; if ( r == CYRUSDB_DONE ) r = 0 ; if ( r ) goto done ; if ( rock -> namespace -> isalt ) { rock -> mb_category = MBNAME_INBOXSUB ; r = cyrusdb_foreach ( rock -> db , inbox , inboxlen + 7 , & find_p , & find_cb , rock , NULL ) ; if ( r == CYRUSDB_DONE ) r = 0 ; if ( r ) goto done ; r = ( * rock -> proc ) ( NULL , rock -> procrock ) ; if ( r ) goto done ; } rock -> mb_category = MBNAME_OWNER ; r = cyrusdb_foreach ( rock -> db , inbox , inboxlen + 1 , & find_p , & find_cb , rock , NULL ) ; if ( r == CYRUSDB_DONE ) r = 0 ; if ( r ) goto done ; if ( rock -> namespace -> isalt ) { r = ( * rock -> proc ) ( NULL , rock -> procrock ) ; if ( r ) goto done ; rock -> mb_category = MBNAME_ALTINBOX ; r = cyrusdb_forone ( rock -> db , inbox , inboxlen + 6 , & find_p , & find_cb , rock , NULL ) ; if ( r == CYRUSDB_DONE ) goto skipalt ; if ( r ) goto done ; rock -> mb_category = MBNAME_ALTPREFIX ; r = cyrusdb_foreach ( rock -> db , inbox , inboxlen + 1 , & find_p , & find_cb , rock , NULL ) ; skipalt : if ( r == CYRUSDB_DONE ) r = 0 ; if ( r ) goto done ; } } if ( isadmin || rock -> namespace -> accessible [ NAMESPACE_USER ] ) { len = strlen ( rock -> namespace -> prefix [ NAMESPACE_USER ] ) ; if ( len ) len -- ; if ( ! strncmp ( rock -> namespace -> prefix [ NAMESPACE_USER ] , commonpat , MIN ( len , prefixlen ) ) ) { <S2SV_StartBug> if ( prefixlen < len ) { <S2SV_EndBug> strlcpy ( domainpat + domainlen , \"user.\" , sizeof ( domainpat ) - domainlen ) ; } else { strlcpy ( domainpat + domainlen , \"user.\" , sizeof ( domainpat ) - domainlen ) ; strlcpy ( domainpat + domainlen + 5 , commonpat + len + 1 , sizeof ( domainpat ) - domainlen - 5 ) ; } rock -> mb_category = MBNAME_OTHERUSER ; size_t thislen = ( isadmin || crossdomains ) ? 0 : strlen ( domainpat ) ; r = ( * rock -> proc ) ( NULL , rock -> procrock ) ; if ( r ) goto done ; r = mboxlist_find_category ( rock , domainpat , thislen ) ; if ( r ) goto done ; } } if ( isadmin || rock -> namespace -> accessible [ NAMESPACE_SHARED ] ) { len = strlen ( rock -> namespace -> prefix [ NAMESPACE_SHARED ] ) ; if ( len ) len -- ; if ( ! strncmp ( rock -> namespace -> prefix [ NAMESPACE_SHARED ] , commonpat , MIN ( len , prefixlen ) ) ) { rock -> mb_category = MBNAME_SHARED ; r = ( * rock -> proc ) ( NULL , rock -> procrock ) ; if ( r ) goto done ; r = mboxlist_find_category ( rock , domainpat , domainlen ) ; if ( r ) goto done ; } } r = ( * rock -> proc ) ( NULL , rock -> procrock ) ; done : for ( i = 0 ; i < rock -> globs . count ; i ++ ) { glob * g = ptrarray_nth ( & rock -> globs , i ) ; glob_free ( & g ) ; } ptrarray_fini ( & rock -> globs ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( prefixlen <= <S2SV_ModEnd> len ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5226\n\n```\nCWE-20 int main ( int argc , char * * argv ) { mode_t old_umask ; cleanup_free char * base_path = NULL ; int clone_flags ; char * old_cwd = NULL ; pid_t pid ; int event_fd = - 1 ; int child_wait_fd = - 1 ; const char * new_cwd ; uid_t ns_uid ; gid_t ns_gid ; struct stat sbuf ; uint64_t val ; int res UNUSED ; real_uid = getuid ( ) ; real_gid = getgid ( ) ; acquire_privs ( ) ; if ( prctl ( PR_SET_NO_NEW_PRIVS , 1 , 0 , 0 , 0 ) < 0 ) die_with_error ( \"prctl(PR_SET_NO_NEW_CAPS)<S2SV_blank>failed\" ) ; read_overflowids ( ) ; argv0 = argv [ 0 ] ; if ( isatty ( 1 ) ) host_tty_dev = ttyname ( 1 ) ; argv ++ ; argc -- ; if ( argc == 0 ) usage ( EXIT_FAILURE , stderr ) ; parse_args ( & argc , & argv ) ; if ( ! is_privileged && getuid ( ) != 0 ) opt_unshare_user = TRUE ; if ( opt_unshare_user_try && stat ( \"/proc/self/ns/user\" , & sbuf ) == 0 ) { bool disabled = FALSE ; if ( stat ( \"/sys/module/user_namespace/parameters/enable\" , & sbuf ) == 0 ) { cleanup_free char * enable = NULL ; enable = load_file_at ( AT_FDCWD , \"/sys/module/user_namespace/parameters/enable\" ) ; if ( enable != NULL && enable [ 0 ] == 'N' ) disabled = TRUE ; } if ( ! disabled ) opt_unshare_user = TRUE ; } if ( argc == 0 ) usage ( EXIT_FAILURE , stderr ) ; __debug__ ( ( \"Creating<S2SV_blank>root<S2SV_blank>mount<S2SV_blank>point\\\\n\" ) ) ; if ( opt_sandbox_uid == - 1 ) opt_sandbox_uid = real_uid ; if ( opt_sandbox_gid == - 1 ) opt_sandbox_gid = real_gid ; if ( ! opt_unshare_user && opt_sandbox_uid != real_uid ) die ( \"Specifying<S2SV_blank>--uid<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( ! opt_unshare_user && opt_sandbox_gid != real_gid ) die ( \"Specifying<S2SV_blank>--gid<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( ! opt_unshare_uts && opt_sandbox_hostname != NULL ) die ( \"Specifying<S2SV_blank>--hostname<S2SV_blank>requires<S2SV_blank>--unshare-uts\" ) ; proc_fd = open ( \"/proc\" , O_RDONLY | O_PATH ) ; if ( proc_fd == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>open<S2SV_blank>/proc\" ) ; base_path = xasprintf ( \"/run/user/%d/.bubblewrap\" , real_uid ) ; if ( mkdir ( base_path , 0755 ) && errno != EEXIST ) { free ( base_path ) ; base_path = xasprintf ( \"/tmp/.bubblewrap-%d\" , real_uid ) ; if ( mkdir ( base_path , 0755 ) && errno != EEXIST ) die_with_error ( \"Creating<S2SV_blank>root<S2SV_blank>mountpoint<S2SV_blank>failed\" ) ; } __debug__ ( ( \"creating<S2SV_blank>new<S2SV_blank>namespace\\\\n\" ) ) ; if ( opt_unshare_pid ) { event_fd = eventfd ( 0 , EFD_CLOEXEC | EFD_NONBLOCK ) ; if ( event_fd == - 1 ) die_with_error ( \"eventfd()\" ) ; } block_sigchild ( ) ; clone_flags = SIGCHLD | CLONE_NEWNS ; if ( opt_unshare_user ) clone_flags |= CLONE_NEWUSER ; if ( opt_unshare_pid ) clone_flags |= CLONE_NEWPID ; if ( opt_unshare_net ) clone_flags |= CLONE_NEWNET ; if ( opt_unshare_ipc ) clone_flags |= CLONE_NEWIPC ; if ( opt_unshare_uts ) clone_flags |= CLONE_NEWUTS ; if ( opt_unshare_cgroup ) { if ( stat ( \"/proc/self/ns/cgroup\" , & sbuf ) ) { if ( errno == ENOENT ) die ( \"Cannot<S2SV_blank>create<S2SV_blank>new<S2SV_blank>cgroup<S2SV_blank>namespace<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>it\" ) ; else die_with_error ( \"stat<S2SV_blank>on<S2SV_blank>/proc/self/ns/cgroup<S2SV_blank>failed\" ) ; } clone_flags |= CLONE_NEWCGROUP ; } if ( opt_unshare_cgroup_try ) if ( ! stat ( \"/proc/self/ns/cgroup\" , & sbuf ) ) clone_flags |= CLONE_NEWCGROUP ; child_wait_fd = eventfd ( 0 , EFD_CLOEXEC ) ; if ( child_wait_fd == - 1 ) die_with_error ( \"eventfd()\" ) ; pid = raw_clone ( clone_flags , NULL ) ; if ( pid == - 1 ) { if ( opt_unshare_user ) { if ( errno == EINVAL ) die ( \"Creating<S2SV_blank>new<S2SV_blank>namespace<S2SV_blank>failed,<S2SV_blank>likely<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>user<S2SV_blank>namespaces.<S2SV_blank><S2SV_blank>bwrap<S2SV_blank>must<S2SV_blank>be<S2SV_blank>installed<S2SV_blank>setuid<S2SV_blank>on<S2SV_blank>such<S2SV_blank>systems.\" ) ; else if ( errno == EPERM && ! is_privileged ) die ( \"No<S2SV_blank>permissions<S2SV_blank>to<S2SV_blank>creating<S2SV_blank>new<S2SV_blank>namespace,<S2SV_blank>likely<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>allow<S2SV_blank>non-privileged<S2SV_blank>user<S2SV_blank>namespaces.<S2SV_blank>On<S2SV_blank>e.g.<S2SV_blank>debian<S2SV_blank>this<S2SV_blank>can<S2SV_blank>be<S2SV_blank>enabled<S2SV_blank>with<S2SV_blank>\\'sysctl<S2SV_blank>kernel.unprivileged_userns_clone=1\\'.\" ) ; } die_with_error ( \"Creating<S2SV_blank>new<S2SV_blank>namespace<S2SV_blank>failed\" ) ; } ns_uid = opt_sandbox_uid ; ns_gid = opt_sandbox_gid ; if ( pid != 0 ) { if ( is_privileged && opt_unshare_user ) { write_uid_gid_map ( ns_uid , real_uid , ns_gid , real_gid , pid , TRUE , opt_needs_devpts ) ; } drop_privs ( ) ; val = 1 ; res = write ( child_wait_fd , & val , 8 ) ; close ( child_wait_fd ) ; if ( opt_info_fd != - 1 ) { cleanup_free char * output = xasprintf ( \"{\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\\\\"child-pid\\\\\":<S2SV_blank>%i\\\\n}\\\\n\" , pid ) ; size_t len = strlen ( output ) ; if ( write ( opt_info_fd , output , len ) != len ) die_with_error ( \"Write<S2SV_blank>to<S2SV_blank>info_fd\" ) ; close ( opt_info_fd ) ; } monitor_child ( event_fd ) ; exit ( 0 ) ; } if ( opt_info_fd != - 1 ) close ( opt_info_fd ) ; res = read ( child_wait_fd , & val , 8 ) ; close ( child_wait_fd ) ; switch_to_user_with_privs ( ) ; if ( opt_unshare_net && loopback_setup ( ) != 0 ) die ( \"Can\\'t<S2SV_blank>create<S2SV_blank>loopback<S2SV_blank>device\" ) ; ns_uid = opt_sandbox_uid ; ns_gid = opt_sandbox_gid ; if ( ! is_privileged && opt_unshare_user ) { if ( opt_needs_devpts ) { ns_uid = 0 ; ns_gid = 0 ; } write_uid_gid_map ( ns_uid , real_uid , ns_gid , real_gid , - 1 , TRUE , FALSE ) ; } old_umask = umask ( 0 ) ; resolve_symlinks_in_ops ( ) ; if ( mount ( NULL , \"/\" , NULL , MS_SLAVE | MS_REC , NULL ) < 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>/<S2SV_blank>slave\" ) ; if ( mount ( \"\" , base_path , \"tmpfs\" , MS_NODEV | MS_NOSUID , NULL ) != 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>tmpfs\" ) ; old_cwd = get_current_dir_name ( ) ; if ( chdir ( base_path ) != 0 ) die_with_error ( \"chdir<S2SV_blank>base_path\" ) ; if ( mkdir ( \"newroot\" , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>newroot<S2SV_blank>failed\" ) ; if ( mkdir ( \"oldroot\" , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>oldroot<S2SV_blank>failed\" ) ; if ( pivot_root ( base_path , \"oldroot\" ) ) die_with_error ( \"pivot_root\" ) ; if ( chdir ( \"/\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/<S2SV_blank>(base<S2SV_blank>path)\" ) ; if ( is_privileged ) { pid_t child ; int privsep_sockets [ 2 ] ; if ( socketpair ( AF_UNIX , SOCK_SEQPACKET | SOCK_CLOEXEC , 0 , privsep_sockets ) != 0 ) die_with_error ( \"Can\\'t<S2SV_blank>create<S2SV_blank>privsep<S2SV_blank>socket\" ) ; child = fork ( ) ; if ( child == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>fork<S2SV_blank>unprivileged<S2SV_blank>helper\" ) ; if ( child == 0 ) { drop_privs ( ) ; close ( privsep_sockets [ 0 ] ) ; setup_newroot ( opt_unshare_pid , privsep_sockets [ 1 ] ) ; exit ( 0 ) ; } else { int status ; uint32_t buffer [ 2048 ] ; uint32_t op , flags ; const char * arg1 , * arg2 ; cleanup_fd int unpriv_socket = - 1 ; unpriv_socket = privsep_sockets [ 0 ] ; close ( privsep_sockets [ 1 ] ) ; do { op = read_priv_sec_op ( unpriv_socket , buffer , sizeof ( buffer ) , & flags , & arg1 , & arg2 ) ; privileged_op ( - 1 , op , flags , arg1 , arg2 ) ; if ( write ( unpriv_socket , buffer , 1 ) != 1 ) die ( \"Can\\'t<S2SV_blank>write<S2SV_blank>to<S2SV_blank>op_socket\" ) ; } while ( op != PRIV_SEP_OP_DONE ) ; waitpid ( child , & status , 0 ) ; } } else { setup_newroot ( opt_unshare_pid , - 1 ) ; } if ( mount ( \"oldroot\" , \"oldroot\" , NULL , MS_REC | MS_PRIVATE , NULL ) != 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>old<S2SV_blank>root<S2SV_blank>rprivate\" ) ; if ( umount2 ( \"oldroot\" , MNT_DETACH ) ) die_with_error ( \"unmount<S2SV_blank>old<S2SV_blank>root\" ) ; if ( opt_unshare_user && ( ns_uid != opt_sandbox_uid || ns_gid != opt_sandbox_gid ) ) { if ( unshare ( CLONE_NEWUSER ) ) die_with_error ( \"unshare<S2SV_blank>user<S2SV_blank>ns\" ) ; write_uid_gid_map ( opt_sandbox_uid , ns_uid , opt_sandbox_gid , ns_gid , - 1 , FALSE , FALSE ) ; } if ( chdir ( \"/newroot\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>newroot\" ) ; if ( chroot ( \"/newroot\" ) != 0 ) die_with_error ( \"chroot<S2SV_blank>/newroot\" ) ; if ( chdir ( \"/\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/\" ) ; drop_privs ( ) ; if ( opt_block_fd != - 1 ) { char b [ 1 ] ; read ( opt_block_fd , b , 1 ) ; close ( opt_block_fd ) ; } if ( opt_seccomp_fd != - 1 ) { cleanup_free char * seccomp_data = NULL ; size_t seccomp_len ; struct sock_fprog prog ; seccomp_data = load_file_data ( opt_seccomp_fd , & seccomp_len ) ; if ( seccomp_data == NULL ) die_with_error ( \"Can\\'t<S2SV_blank>read<S2SV_blank>seccomp<S2SV_blank>data\" ) ; if ( seccomp_len % 8 != 0 ) die ( \"Invalid<S2SV_blank>seccomp<S2SV_blank>data,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>8\" ) ; prog . len = seccomp_len / 8 ; prog . filter = ( struct sock_filter * ) seccomp_data ; close ( opt_seccomp_fd ) ; if ( prctl ( PR_SET_SECCOMP , SECCOMP_MODE_FILTER , & prog ) != 0 ) die_with_error ( \"prctl(PR_SET_SECCOMP)\" ) ; } umask ( old_umask ) ; new_cwd = \"/\" ; if ( opt_chdir_path ) { if ( chdir ( opt_chdir_path ) ) die_with_error ( \"Can\\'t<S2SV_blank>chdir<S2SV_blank>to<S2SV_blank>%s\" , opt_chdir_path ) ; new_cwd = opt_chdir_path ; } else if ( chdir ( old_cwd ) == 0 ) { new_cwd = old_cwd ; } else { const char * home = getenv ( \"HOME\" ) ; if ( home != NULL && chdir ( home ) == 0 ) new_cwd = home ; } xsetenv ( \"PWD\" , new_cwd , 1 ) ; free ( old_cwd ) ; __debug__ ( ( \"forking<S2SV_blank>for<S2SV_blank>child\\\\n\" ) ) ; if ( opt_unshare_pid || lock_files != NULL || opt_sync_fd != - 1 ) { pid = fork ( ) ; if ( pid == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>fork<S2SV_blank>for<S2SV_blank>pid<S2SV_blank>1\" ) ; if ( pid != 0 ) { { int dont_close [ 3 ] ; int j = 0 ; if ( event_fd != - 1 ) dont_close [ j ++ ] = event_fd ; if ( opt_sync_fd != - 1 ) dont_close [ j ++ ] = opt_sync_fd ; dont_close [ j ++ ] = - 1 ; fdwalk ( proc_fd , close_extra_fds , dont_close ) ; } return do_init ( event_fd , pid ) ; } } __debug__ ( ( \"launch<S2SV_blank>executable<S2SV_blank>%s\\\\n\" , argv [ 0 ] ) ) ; if ( proc_fd != - 1 ) close ( proc_fd ) ; if ( opt_sync_fd != - 1 ) close ( opt_sync_fd ) ; unblock_sigchild ( ) ; <S2SV_StartBug> if ( label_exec ( opt_exec_label ) == - 1 ) <S2SV_EndBug> die_with_error ( \"label_exec<S2SV_blank>%s\" , argv [ 0 ] ) ; if ( execvp ( argv [ 0 ] , argv ) == - 1 ) die_with_error ( \"execvp<S2SV_blank>%s\" , argv [ 0 ] ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( setsid ( ) == ( pid_t ) - 1 ) die_with_error ( \"setsid\" ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1160\n\n```\nCWE-200 int tpm_open ( struct inode * inode , struct file * file ) { int minor = iminor ( inode ) ; struct tpm_chip * chip = NULL , * pos ; rcu_read_lock ( ) ; list_for_each_entry_rcu ( pos , & tpm_chip_list , list ) { if ( pos -> vendor . miscdev . minor == minor ) { chip = pos ; get_device ( chip -> dev ) ; break ; } } rcu_read_unlock ( ) ; if ( ! chip ) return - ENODEV ; if ( test_and_set_bit ( 0 , & chip -> is_open ) ) { dev_dbg ( chip -> dev , \"Another<S2SV_blank>process<S2SV_blank>owns<S2SV_blank>this<S2SV_blank>TPM\\\\n\" ) ; put_device ( chip -> dev ) ; return - EBUSY ; } <S2SV_StartBug> chip -> data_buffer = kmalloc ( TPM_BUFSIZE * sizeof ( u8 ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( chip -> data_buffer == NULL ) { clear_bit ( 0 , & chip -> is_open ) ; put_device ( chip -> dev ) ; return - ENOMEM ; } atomic_set ( & chip -> data_pending , 0 ) ; file -> private_data = chip ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> data_buffer = kzalloc ( TPM_BUFSIZE <S2SV_ModEnd> , GFP_KERNEL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15917\n\n```\nCWE-416 static int hci_uart_set_proto ( struct hci_uart * hu , int id ) { const struct hci_uart_proto * p ; int err ; p = hci_uart_get_proto ( id ) ; if ( ! p ) return - EPROTONOSUPPORT ; hu -> proto = p ; <S2SV_StartBug> set_bit ( HCI_UART_PROTO_READY , & hu -> flags ) ; <S2SV_EndBug> err = hci_uart_register_dev ( hu ) ; if ( err ) { <S2SV_StartBug> clear_bit ( HCI_UART_PROTO_READY , & hu -> flags ) ; <S2SV_EndBug> <S2SV_StartBug> return err ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = p ; <S2SV_ModEnd> err = hci_uart_register_dev <S2SV_ModStart> err ) { return err ; } set_bit <S2SV_ModEnd> ( HCI_UART_PROTO_READY , <S2SV_ModStart> ) ; return <S2SV_ModEnd> 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10128\n\n```\nCWE-119 int git_pkt_parse_line ( git_pkt * * head , const char * line , const char * * out , size_t bufflen ) { int ret ; int32_t len ; if ( bufflen > 0 && bufflen < PKT_LEN_SIZE ) return GIT_EBUFS ; len = parse_len ( line ) ; if ( len < 0 ) { if ( bufflen >= 4 && ! git__prefixcmp ( line , \"PACK\" ) ) { giterr_clear ( ) ; * out = line ; return pack_pkt ( head ) ; } return ( int ) len ; } if ( bufflen > 0 && bufflen < ( size_t ) len ) return GIT_EBUFS ; <S2SV_StartBug> line += PKT_LEN_SIZE ; <S2SV_EndBug> if ( len == PKT_LEN_SIZE ) { * head = NULL ; * out = line ; return 0 ; } if ( len == 0 ) { * out = line ; return flush_pkt ( head ) ; } len -= PKT_LEN_SIZE ; if ( * line == GIT_SIDE_BAND_DATA ) ret = data_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_PROGRESS ) ret = sideband_progress_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_ERROR ) ret = sideband_error_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ACK\" ) ) ret = ack_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"NAK\" ) ) ret = nak_pkt ( head ) ; else if ( ! git__prefixcmp ( line , \"ERR<S2SV_blank>\" ) ) ret = err_pkt ( head , line , len ) ; else if ( * line == '#' ) ret = comment_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ok\" ) ) ret = ok_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ng\" ) ) ret = ng_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"unpack\" ) ) ret = unpack_pkt ( head , line , len ) ; else ret = ref_pkt ( head , line , len ) ; * out = line + len ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return GIT_EBUFS ; if ( len != 0 && len < PKT_LEN_SIZE ) return GIT_ERROR ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7854\n\n```\nCWE-125 static RList * r_bin_wasm_get_element_entries ( RBinWasmObj * bin , RBinWasmSection * sec ) { RList * ret = NULL ; RBinWasmElementEntry * ptr = NULL ; if ( ! ( ret = r_list_newf ( ( RListFree ) free ) ) ) { return NULL ; } ut8 * buf = bin -> buf -> buf + ( ut32 ) sec -> payload_data ; <S2SV_StartBug> ut32 len = sec -> payload_len ; <S2SV_EndBug> ut32 count = sec -> count ; ut32 i = 0 , r = 0 ; <S2SV_StartBug> while ( i < len && r < count ) { <S2SV_EndBug> if ( ! ( ptr = R_NEW0 ( RBinWasmElementEntry ) ) ) { return ret ; } if ( ! ( consume_u32 ( buf + i , buf + len , & ptr -> index , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } if ( ! ( consume_init_expr ( buf + i , buf + len , R_BIN_WASM_END_OF_CODE , NULL , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } if ( ! ( consume_u32 ( buf + i , buf + len , & ptr -> num_elem , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } ut32 j = 0 ; while ( i < len && j < ptr -> num_elem ) { ut32 e ; if ( ! ( consume_u32 ( buf + i , buf + len , & e , & i ) ) ) { free ( ptr ) ; return ret ; } } r_list_append ( ret , ptr ) ; r += 1 ; } return ret ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> payload_data ; int buflen = bin -> buf -> length - ( ut32 ) sec -> payload_data ; <S2SV_ModStart> i < len && len < buflen <S2SV_ModStart> ) ) { goto beach <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto beach <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto beach <S2SV_ModEnd> ; } ut32 <S2SV_ModStart> return ret ; beach : free ( ptr ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5507\n\n```\nCWE-772 static Image * ReadMPCImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char cache_filename [ MaxTextExtent ] , id [ MaxTextExtent ] , keyword [ MaxTextExtent ] , * options ; const unsigned char * p ; GeometryInfo geometry_info ; Image * image ; int c ; LinkedListInfo * profiles ; MagickBooleanType status ; MagickOffsetType offset ; MagickStatusType flags ; register ssize_t i ; size_t depth , length ; ssize_t count ; StringInfo * profile ; unsigned int signature ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( cache_filename , image -> filename , MaxTextExtent ) ; AppendImageFormat ( \"cache\" , cache_filename ) ; c = ReadBlobByte ( image ) ; if ( c == EOF ) { image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } * id = '\\\\0' ; ( void ) ResetMagickMemory ( keyword , 0 , sizeof ( keyword ) ) ; offset = 0 ; do { profiles = ( LinkedListInfo * ) NULL ; length = MaxTextExtent ; options = AcquireString ( ( char * ) NULL ) ; signature = GetMagickSignature ( ( const StringInfo * ) NULL ) ; image -> depth = 8 ; image -> compression = NoCompression ; while ( ( isgraph ( c ) != MagickFalse ) && ( c != ( int ) ':' ) ) { register char * p ; if ( c == ( int ) '{' ) { char * comment ; length = MaxTextExtent ; comment = AcquireString ( ( char * ) NULL ) ; for ( p = comment ; comment != ( char * ) NULL ; p ++ ) { c = ReadBlobByte ( image ) ; if ( c == ( int ) '\\\\\\\\' ) c = ReadBlobByte ( image ) ; else if ( ( c == EOF ) || ( c == ( int ) '}' ) ) break ; if ( ( size_t ) ( p - comment + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; comment = ( char * ) ResizeQuantumMemory ( comment , length + MaxTextExtent , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) break ; p = comment + strlen ( comment ) ; } * p = ( char ) c ; } if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; * p = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment ) ; comment = DestroyString ( comment ) ; c = ReadBlobByte ( image ) ; } else if ( isalnum ( c ) != MagickFalse ) { length = MaxTextExtent ; p = keyword ; do { if ( c == ( int ) '=' ) break ; if ( ( size_t ) ( p - keyword ) < ( MaxTextExtent - 1 ) ) * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; } while ( c != EOF ) ; * p = '\\\\0' ; p = options ; while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; if ( c == ( int ) '=' ) { c = ReadBlobByte ( image ) ; while ( ( c != ( int ) '}' ) && ( c != EOF ) ) { if ( ( size_t ) ( p - options + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; options = ( char * ) ResizeQuantumMemory ( options , length + MaxTextExtent , sizeof ( * options ) ) ; if ( options == ( char * ) NULL ) break ; p = options + strlen ( options ) ; } * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; if ( c == '\\\\\\\\' ) { c = ReadBlobByte ( image ) ; if ( c == ( int ) '}' ) { * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; } } if ( * options != '{' ) if ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) break ; } if ( options == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } * p = '\\\\0' ; if ( * options == '{' ) ( void ) CopyMagickString ( options , options + 1 , strlen ( options ) ) ; switch ( * keyword ) { case 'b' : case 'B' : { if ( LocaleCompare ( keyword , \"background-color\" ) == 0 ) { ( void ) QueryColorDatabase ( options , & image -> background_color , exception ) ; break ; } if ( LocaleCompare ( keyword , \"blue-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . blue_primary . x = geometry_info . rho ; image -> chromaticity . blue_primary . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . blue_primary . y = image -> chromaticity . blue_primary . x ; break ; } if ( LocaleCompare ( keyword , \"border-color\" ) == 0 ) { ( void ) QueryColorDatabase ( options , & image -> border_color , exception ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'c' : case 'C' : { if ( LocaleCompare ( keyword , \"class\" ) == 0 ) { ssize_t storage_class ; storage_class = ParseCommandOption ( MagickClassOptions , MagickFalse , options ) ; if ( storage_class < 0 ) break ; image -> storage_class = ( ClassType ) storage_class ; break ; } if ( LocaleCompare ( keyword , \"colors\" ) == 0 ) { image -> colors = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"colorspace\" ) == 0 ) { ssize_t colorspace ; colorspace = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , options ) ; if ( colorspace < 0 ) break ; image -> colorspace = ( ColorspaceType ) colorspace ; break ; } if ( LocaleCompare ( keyword , \"compression\" ) == 0 ) { ssize_t compression ; compression = ParseCommandOption ( MagickCompressOptions , MagickFalse , options ) ; if ( compression < 0 ) break ; image -> compression = ( CompressionType ) compression ; break ; } if ( LocaleCompare ( keyword , \"columns\" ) == 0 ) { image -> columns = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'd' : case 'D' : { if ( LocaleCompare ( keyword , \"delay\" ) == 0 ) { image -> delay = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"depth\" ) == 0 ) { image -> depth = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"dispose\" ) == 0 ) { ssize_t dispose ; dispose = ParseCommandOption ( MagickDisposeOptions , MagickFalse , options ) ; if ( dispose < 0 ) break ; image -> dispose = ( DisposeType ) dispose ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'e' : case 'E' : { if ( LocaleCompare ( keyword , \"endian\" ) == 0 ) { ssize_t endian ; endian = ParseCommandOption ( MagickEndianOptions , MagickFalse , options ) ; if ( endian < 0 ) break ; image -> endian = ( EndianType ) endian ; break ; } if ( LocaleCompare ( keyword , \"error\" ) == 0 ) { image -> error . mean_error_per_pixel = StringToDouble ( options , ( char * * ) NULL ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'g' : case 'G' : { if ( LocaleCompare ( keyword , \"gamma\" ) == 0 ) { image -> gamma = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"green-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . green_primary . x = geometry_info . rho ; image -> chromaticity . green_primary . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . green_primary . y = image -> chromaticity . green_primary . x ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'i' : case 'I' : { if ( LocaleCompare ( keyword , \"id\" ) == 0 ) { ( void ) CopyMagickString ( id , options , MaxTextExtent ) ; break ; } if ( LocaleCompare ( keyword , \"iterations\" ) == 0 ) { image -> iterations = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'm' : case 'M' : { if ( LocaleCompare ( keyword , \"magick-signature\" ) == 0 ) { signature = ( unsigned int ) StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"matte\" ) == 0 ) { ssize_t matte ; matte = ParseCommandOption ( MagickBooleanOptions , MagickFalse , options ) ; if ( matte < 0 ) break ; image -> matte = ( MagickBooleanType ) matte ; break ; } if ( LocaleCompare ( keyword , \"matte-color\" ) == 0 ) { ( void ) QueryColorDatabase ( options , & image -> matte_color , exception ) ; break ; } if ( LocaleCompare ( keyword , \"maximum-error\" ) == 0 ) { image -> error . normalized_maximum_error = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"mean-error\" ) == 0 ) { image -> error . normalized_mean_error = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"montage\" ) == 0 ) { ( void ) CloneString ( & image -> montage , options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'o' : case 'O' : { if ( LocaleCompare ( keyword , \"opaque\" ) == 0 ) { ssize_t matte ; matte = ParseCommandOption ( MagickBooleanOptions , MagickFalse , options ) ; if ( matte < 0 ) break ; image -> matte = ( MagickBooleanType ) matte ; break ; } if ( LocaleCompare ( keyword , \"orientation\" ) == 0 ) { ssize_t orientation ; orientation = ParseCommandOption ( MagickOrientationOptions , MagickFalse , options ) ; if ( orientation < 0 ) break ; image -> orientation = ( OrientationType ) orientation ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'p' : case 'P' : { if ( LocaleCompare ( keyword , \"page\" ) == 0 ) { char * geometry ; geometry = GetPageGeometry ( options ) ; ( void ) ParseAbsoluteGeometry ( geometry , & image -> page ) ; geometry = DestroyString ( geometry ) ; break ; } if ( LocaleCompare ( keyword , \"pixel-intensity\" ) == 0 ) { ssize_t intensity ; intensity = ParseCommandOption ( MagickPixelIntensityOptions , MagickFalse , options ) ; if ( intensity < 0 ) break ; image -> intensity = ( PixelIntensityMethod ) intensity ; break ; } if ( ( LocaleNCompare ( keyword , \"profile:\" , 8 ) == 0 ) || ( LocaleNCompare ( keyword , \"profile-\" , 8 ) == 0 ) ) { if ( profiles == ( LinkedListInfo * ) NULL ) profiles = NewLinkedList ( 0 ) ; ( void ) AppendValueToLinkedList ( profiles , AcquireString ( keyword + 8 ) ) ; profile = BlobToStringInfo ( ( const void * ) NULL , ( size_t ) StringToLong ( options ) ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) SetImageProfile ( image , keyword + 8 , profile ) ; profile = DestroyStringInfo ( profile ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'q' : case 'Q' : { if ( LocaleCompare ( keyword , \"quality\" ) == 0 ) { image -> quality = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'r' : case 'R' : { if ( LocaleCompare ( keyword , \"red-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . red_primary . x = geometry_info . rho ; if ( ( flags & SigmaValue ) != 0 ) image -> chromaticity . red_primary . y = geometry_info . sigma ; break ; } if ( LocaleCompare ( keyword , \"rendering-intent\" ) == 0 ) { ssize_t rendering_intent ; rendering_intent = ParseCommandOption ( MagickIntentOptions , MagickFalse , options ) ; if ( rendering_intent < 0 ) break ; image -> rendering_intent = ( RenderingIntent ) rendering_intent ; break ; } if ( LocaleCompare ( keyword , \"resolution\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> x_resolution = geometry_info . rho ; image -> y_resolution = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> y_resolution = image -> x_resolution ; break ; } if ( LocaleCompare ( keyword , \"rows\" ) == 0 ) { image -> rows = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 's' : case 'S' : { if ( LocaleCompare ( keyword , \"scene\" ) == 0 ) { image -> scene = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 't' : case 'T' : { if ( LocaleCompare ( keyword , \"ticks-per-second\" ) == 0 ) { image -> ticks_per_second = ( ssize_t ) StringToLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"tile-offset\" ) == 0 ) { char * geometry ; geometry = GetPageGeometry ( options ) ; ( void ) ParseAbsoluteGeometry ( geometry , & image -> tile_offset ) ; geometry = DestroyString ( geometry ) ; } if ( LocaleCompare ( keyword , \"type\" ) == 0 ) { ssize_t type ; type = ParseCommandOption ( MagickTypeOptions , MagickFalse , options ) ; if ( type < 0 ) break ; image -> type = ( ImageType ) type ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'u' : case 'U' : { if ( LocaleCompare ( keyword , \"units\" ) == 0 ) { ssize_t units ; units = ParseCommandOption ( MagickResolutionOptions , MagickFalse , options ) ; if ( units < 0 ) break ; image -> units = ( ResolutionType ) units ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } case 'w' : case 'W' : { if ( LocaleCompare ( keyword , \"white-point\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . white_point . x = geometry_info . rho ; image -> chromaticity . white_point . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . white_point . y = image -> chromaticity . white_point . x ; break ; } ( void ) SetImageProperty ( image , keyword , options ) ; break ; } default : { ( void ) SetImageProperty ( image , keyword , options ) ; break ; } } } else c = ReadBlobByte ( image ) ; while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; } options = DestroyString ( options ) ; ( void ) ReadBlobByte ( image ) ; if ( ( LocaleCompare ( id , \"MagickCache\" ) != 0 ) || ( image -> storage_class == UndefinedClass ) || ( image -> compression == UndefinedCompression ) || ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( signature != GetMagickSignature ( ( const StringInfo * ) NULL ) ) ThrowReaderException ( CacheError , \"IncompatibleAPI\" ) ; if ( image -> montage != ( char * ) NULL ) { register char * p ; length = MaxTextExtent ; image -> directory = AcquireString ( ( char * ) NULL ) ; p = image -> directory ; do { * p = '\\\\0' ; if ( ( strlen ( image -> directory ) + MaxTextExtent ) >= length ) { length <<= 1 ; image -> directory = ( char * ) ResizeQuantumMemory ( image -> directory , length + MaxTextExtent , sizeof ( * image -> directory ) ) ; if ( image -> directory == ( char * ) NULL ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; p = image -> directory + strlen ( image -> directory ) ; } c = ReadBlobByte ( image ) ; * p ++ = ( char ) c ; } while ( c != ( int ) '\\\\0' ) ; } if ( profiles != ( LinkedListInfo * ) NULL ) { const char * name ; const StringInfo * profile ; register unsigned char * p ; ResetLinkedListIterator ( profiles ) ; name = ( const char * ) GetNextValueInLinkedList ( profiles ) ; while ( name != ( const char * ) NULL ) { profile = GetImageProfile ( image , name ) ; if ( profile != ( StringInfo * ) NULL ) { p = GetStringInfoDatum ( profile ) ; ( void ) ReadBlob ( image , GetStringInfoLength ( profile ) , p ) ; } name = ( const char * ) GetNextValueInLinkedList ( profiles ) ; } profiles = DestroyLinkedList ( profiles , RelinquishMagickMemory ) ; } depth = GetImageQuantumDepth ( image , MagickFalse ) ; if ( image -> storage_class == PseudoClass ) { <S2SV_StartBug> if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) <S2SV_EndBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( image -> colors != 0 ) { size_t packet_size ; unsigned char * colormap ; packet_size = ( size_t ) ( 3UL * depth / 8UL ) ; colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , packet_size * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , packet_size * image -> colors , colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; p = colormap ; switch ( depth ) { default : ThrowReaderException ( CorruptImageError , \"ImageDepthNotSupported\" ) ; case 8 : { unsigned char pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . red = ScaleCharToQuantum ( pixel ) ; p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( pixel ) ; p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( pixel ) ; } break ; } case 16 : { unsigned short pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . red = ScaleShortToQuantum ( pixel ) ; p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . green = ScaleShortToQuantum ( pixel ) ; p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . blue = ScaleShortToQuantum ( pixel ) ; } break ; } case 32 : { unsigned int pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . red = ScaleLongToQuantum ( pixel ) ; p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . green = ScaleLongToQuantum ( pixel ) ; p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . blue = ScaleLongToQuantum ( pixel ) ; } break ; } } colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; <S2SV_StartBug> status = SetImageExtent ( image , image -> columns , image -> rows ) ; <S2SV_EndBug> if ( status == MagickFalse ) <S2SV_StartBug> { <S2SV_EndBug> InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } status = PersistPixelCache ( image , cache_filename , MagickTrue , & offset , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( CacheError , \"UnableToPersistPixelCache\" ) ; do { c = ReadBlobByte ( image ) ; } while ( ( isgraph ( c ) == MagickFalse ) && ( c != EOF ) ) ; if ( c != EOF ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( c != EOF ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PseudoClass ) { image -> colormap = ( PixelPacket * ) AcquireQuantumMemory ( <S2SV_ModEnd> image -> colors <S2SV_ModStart> image -> colors + 1 , sizeof ( * image -> colormap ) ) ; if ( image -> colormap == ( PixelPacket * ) NULL <S2SV_ModEnd> ) ThrowReaderException ( <S2SV_ModStart> ) break ; if ( ( AcquireMagickResource ( WidthResource <S2SV_ModEnd> , image -> <S2SV_ModStart> image -> columns ) == MagickFalse ) || ( AcquireMagickResource ( HeightResource <S2SV_ModStart> -> rows ) <S2SV_ModEnd> == MagickFalse ) <S2SV_ModStart> == MagickFalse ) ) ThrowReaderException ( ImageError , \"WidthOrHeightExceedsLimit\" ) ; <S2SV_ModEnd> status = PersistPixelCache\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int ip_options_echo ( struct ip_options * dopt , struct sk_buff * skb ) { <S2SV_StartBug> struct ip_options * sopt ; <S2SV_EndBug> unsigned char * sptr , * dptr ; int soffset , doffset ; int optlen ; __be32 daddr ; memset ( dopt , 0 , sizeof ( struct ip_options ) ) ; sopt = & ( IPCB ( skb ) -> opt ) ; <S2SV_StartBug> if ( sopt -> optlen == 0 ) { <S2SV_EndBug> dopt -> optlen = 0 ; return 0 ; <S2SV_StartBug> } <S2SV_EndBug> sptr = skb_network_header ( skb ) ; dptr = dopt -> __data ; daddr = skb_rtable ( skb ) -> rt_spec_dst ; if ( sopt -> rr ) { optlen = sptr [ sopt -> rr + 1 ] ; soffset = sptr [ sopt -> rr + 2 ] ; dopt -> rr = dopt -> optlen + sizeof ( struct iphdr ) ; memcpy ( dptr , sptr + sopt -> rr , optlen ) ; if ( sopt -> rr_needaddr && soffset <= optlen ) { if ( soffset + 3 > optlen ) return - EINVAL ; dptr [ 2 ] = soffset + 4 ; dopt -> rr_needaddr = 1 ; } dptr += optlen ; dopt -> optlen += optlen ; } if ( sopt -> ts ) { optlen = sptr [ sopt -> ts + 1 ] ; soffset = sptr [ sopt -> ts + 2 ] ; dopt -> ts = dopt -> optlen + sizeof ( struct iphdr ) ; memcpy ( dptr , sptr + sopt -> ts , optlen ) ; if ( soffset <= optlen ) { if ( sopt -> ts_needaddr ) { if ( soffset + 3 > optlen ) return - EINVAL ; dopt -> ts_needaddr = 1 ; soffset += 4 ; } if ( sopt -> ts_needtime ) { if ( soffset + 3 > optlen ) return - EINVAL ; if ( ( dptr [ 3 ] & 0xF ) != IPOPT_TS_PRESPEC ) { dopt -> ts_needtime = 1 ; soffset += 4 ; } else { dopt -> ts_needtime = 0 ; if ( soffset + 7 <= optlen ) { __be32 addr ; memcpy ( & addr , dptr + soffset - 1 , 4 ) ; if ( inet_addr_type ( dev_net ( skb_dst ( skb ) -> dev ) , addr ) != RTN_UNICAST ) { dopt -> ts_needtime = 1 ; soffset += 8 ; } } } } dptr [ 2 ] = soffset ; } dptr += optlen ; dopt -> optlen += optlen ; } if ( sopt -> srr ) { unsigned char * start = sptr + sopt -> srr ; __be32 faddr ; optlen = start [ 1 ] ; soffset = start [ 2 ] ; doffset = 0 ; if ( soffset > optlen ) soffset = optlen + 1 ; soffset -= 4 ; if ( soffset > 3 ) { memcpy ( & faddr , & start [ soffset - 1 ] , 4 ) ; for ( soffset -= 4 , doffset = 4 ; soffset > 3 ; soffset -= 4 , doffset += 4 ) memcpy ( & dptr [ doffset - 1 ] , & start [ soffset - 1 ] , 4 ) ; if ( memcmp ( & ip_hdr ( skb ) -> saddr , & start [ soffset + 3 ] , 4 ) == 0 ) doffset -= 4 ; } if ( doffset > 3 ) { memcpy ( & start [ doffset - 1 ] , & daddr , 4 ) ; dopt -> faddr = faddr ; dptr [ 0 ] = start [ 0 ] ; dptr [ 1 ] = doffset + 3 ; dptr [ 2 ] = 4 ; dptr += doffset + 3 ; dopt -> srr = dopt -> optlen + sizeof ( struct iphdr ) ; dopt -> optlen += doffset + 3 ; dopt -> is_strictroute = sopt -> is_strictroute ; } } if ( sopt -> cipso ) { optlen = sptr [ sopt -> cipso + 1 ] ; dopt -> cipso = dopt -> optlen + sizeof ( struct iphdr ) ; memcpy ( dptr , sptr + sopt -> cipso , optlen ) ; dptr += optlen ; dopt -> optlen += optlen ; } while ( dopt -> optlen & 3 ) { * dptr ++ = IPOPT_END ; dopt -> optlen ++ ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) { const <S2SV_ModStart> == 0 ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> return 0 ; <S2SV_ModEnd> sptr = skb_network_header\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8369\n\n```\nCWE-119 static pfn_t kvm_pin_pages ( struct kvm_memory_slot * slot , gfn_t gfn , <S2SV_StartBug> unsigned long size ) <S2SV_EndBug> { gfn_t end_gfn ; pfn_t pfn ; pfn = gfn_to_pfn_memslot ( slot , gfn ) ; <S2SV_StartBug> end_gfn = gfn + ( size >> PAGE_SHIFT ) ; <S2SV_EndBug> gfn += 1 ; if ( is_error_noslot_pfn ( pfn ) ) return pfn ; while ( gfn < end_gfn ) gfn_to_pfn_memslot ( slot , gfn ++ ) ; return pfn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , unsigned long npages <S2SV_ModEnd> ) { gfn_t <S2SV_ModStart> = gfn + npages <S2SV_ModEnd> ; gfn +=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 vpx_codec_err_t vpx_codec_enc_config_set ( vpx_codec_ctx_t * ctx , const vpx_codec_enc_cfg_t * cfg ) { vpx_codec_err_t res ; if ( ! ctx || ! ctx -> iface || ! ctx -> priv || ! cfg ) res = VPX_CODEC_INVALID_PARAM ; else if ( ! ( ctx -> iface -> caps & VPX_CODEC_CAP_ENCODER ) ) res = VPX_CODEC_INCAPABLE ; else <S2SV_StartBug> res = ctx -> iface -> enc . cfg_set ( ctx -> priv -> alg_priv , cfg ) ; <S2SV_EndBug> return SAVE_STATUS ( ctx , res ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . cfg_set ( get_alg_priv ( ctx ) <S2SV_ModEnd> , cfg )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5283\n\n```\nCWE-119 static __init int sctp_init ( void ) { int i ; int status = - EINVAL ; unsigned long goal ; unsigned long limit ; int max_share ; int order ; sock_skb_cb_check_size ( sizeof ( struct sctp_ulpevent ) ) ; status = - ENOBUFS ; sctp_bucket_cachep = kmem_cache_create ( \"sctp_bind_bucket\" , sizeof ( struct sctp_bind_bucket ) , 0 , SLAB_HWCACHE_ALIGN , NULL ) ; if ( ! sctp_bucket_cachep ) goto out ; sctp_chunk_cachep = kmem_cache_create ( \"sctp_chunk\" , sizeof ( struct sctp_chunk ) , 0 , SLAB_HWCACHE_ALIGN , NULL ) ; if ( ! sctp_chunk_cachep ) goto err_chunk_cachep ; status = percpu_counter_init ( & sctp_sockets_allocated , 0 , GFP_KERNEL ) ; if ( status ) goto err_percpu_counter_init ; sctp_max_instreams = SCTP_DEFAULT_INSTREAMS ; sctp_max_outstreams = SCTP_DEFAULT_OUTSTREAMS ; idr_init ( & sctp_assocs_id ) ; limit = nr_free_buffer_pages ( ) / 8 ; limit = max ( limit , 128UL ) ; sysctl_sctp_mem [ 0 ] = limit / 4 * 3 ; sysctl_sctp_mem [ 1 ] = limit ; sysctl_sctp_mem [ 2 ] = sysctl_sctp_mem [ 0 ] * 2 ; limit = ( sysctl_sctp_mem [ 1 ] ) << ( PAGE_SHIFT - 7 ) ; max_share = min ( 4UL * 1024 * 1024 , limit ) ; sysctl_sctp_rmem [ 0 ] = SK_MEM_QUANTUM ; sysctl_sctp_rmem [ 1 ] = 1500 * SKB_TRUESIZE ( 1 ) ; sysctl_sctp_rmem [ 2 ] = max ( sysctl_sctp_rmem [ 1 ] , max_share ) ; sysctl_sctp_wmem [ 0 ] = SK_MEM_QUANTUM ; sysctl_sctp_wmem [ 1 ] = 16 * 1024 ; sysctl_sctp_wmem [ 2 ] = max ( 64 * 1024 , max_share ) ; if ( totalram_pages >= ( 128 * 1024 ) ) goal = totalram_pages >> ( 22 - PAGE_SHIFT ) ; else goal = totalram_pages >> ( 24 - PAGE_SHIFT ) ; for ( order = 0 ; ( 1UL << order ) < goal ; order ++ ) ; do { sctp_assoc_hashsize = ( 1UL << order ) * PAGE_SIZE / sizeof ( struct sctp_hashbucket ) ; if ( ( sctp_assoc_hashsize > ( 64 * 1024 ) ) && order > 0 ) continue ; sctp_assoc_hashtable = ( struct sctp_hashbucket * ) __get_free_pages ( GFP_ATOMIC | __GFP_NOWARN , order ) ; } while ( ! sctp_assoc_hashtable && -- order > 0 ) ; if ( ! sctp_assoc_hashtable ) { pr_err ( \"Failed<S2SV_blank>association<S2SV_blank>hash<S2SV_blank>alloc\\\\n\" ) ; status = - ENOMEM ; goto err_ahash_alloc ; } for ( i = 0 ; i < sctp_assoc_hashsize ; i ++ ) { rwlock_init ( & sctp_assoc_hashtable [ i ] . lock ) ; INIT_HLIST_HEAD ( & sctp_assoc_hashtable [ i ] . chain ) ; } sctp_ep_hashsize = 64 ; sctp_ep_hashtable = kmalloc ( 64 * sizeof ( struct sctp_hashbucket ) , GFP_KERNEL ) ; if ( ! sctp_ep_hashtable ) { pr_err ( \"Failed<S2SV_blank>endpoint_hash<S2SV_blank>alloc\\\\n\" ) ; status = - ENOMEM ; goto err_ehash_alloc ; } for ( i = 0 ; i < sctp_ep_hashsize ; i ++ ) { rwlock_init ( & sctp_ep_hashtable [ i ] . lock ) ; INIT_HLIST_HEAD ( & sctp_ep_hashtable [ i ] . chain ) ; } do { sctp_port_hashsize = ( 1UL << order ) * PAGE_SIZE / sizeof ( struct sctp_bind_hashbucket ) ; if ( ( sctp_port_hashsize > ( 64 * 1024 ) ) && order > 0 ) continue ; sctp_port_hashtable = ( struct sctp_bind_hashbucket * ) __get_free_pages ( GFP_ATOMIC | __GFP_NOWARN , order ) ; } while ( ! sctp_port_hashtable && -- order > 0 ) ; if ( ! sctp_port_hashtable ) { pr_err ( \"Failed<S2SV_blank>bind<S2SV_blank>hash<S2SV_blank>alloc\\\\n\" ) ; status = - ENOMEM ; goto err_bhash_alloc ; } for ( i = 0 ; i < sctp_port_hashsize ; i ++ ) { spin_lock_init ( & sctp_port_hashtable [ i ] . lock ) ; INIT_HLIST_HEAD ( & sctp_port_hashtable [ i ] . chain ) ; } pr_info ( \"Hash<S2SV_blank>tables<S2SV_blank>configured<S2SV_blank>(established<S2SV_blank>%d<S2SV_blank>bind<S2SV_blank>%d)\\\\n\" , sctp_assoc_hashsize , sctp_port_hashsize ) ; sctp_sysctl_register ( ) ; INIT_LIST_HEAD ( & sctp_address_families ) ; sctp_v4_pf_init ( ) ; sctp_v6_pf_init ( ) ; <S2SV_StartBug> status = sctp_v4_protosw_init ( ) ; <S2SV_EndBug> if ( status ) goto err_protosw_init ; status = sctp_v6_protosw_init ( ) ; if ( status ) goto err_v6_protosw_init ; <S2SV_StartBug> status = register_pernet_subsys ( & sctp_net_ops ) ; <S2SV_EndBug> if ( status ) goto err_register_pernet_subsys ; status = sctp_v4_add_protocol ( ) ; if ( status ) goto err_add_protocol ; status = sctp_v6_add_protocol ( ) ; if ( status ) goto err_v6_add_protocol ; out : return status ; err_v6_add_protocol : sctp_v4_del_protocol ( ) ; err_add_protocol : <S2SV_StartBug> unregister_pernet_subsys ( & sctp_net_ops ) ; <S2SV_EndBug> err_register_pernet_subsys : sctp_v6_protosw_exit ( ) ; err_v6_protosw_init : sctp_v4_protosw_exit ( ) ; <S2SV_StartBug> err_protosw_init : <S2SV_EndBug> sctp_v4_pf_exit ( ) ; sctp_v6_pf_exit ( ) ; sctp_sysctl_unregister ( ) ; free_pages ( ( unsigned long ) sctp_port_hashtable , get_order ( sctp_port_hashsize * sizeof ( struct sctp_bind_hashbucket ) ) ) ; err_bhash_alloc : kfree ( sctp_ep_hashtable ) ; err_ehash_alloc : free_pages ( ( unsigned long ) sctp_assoc_hashtable , get_order ( sctp_assoc_hashsize * sizeof ( struct sctp_hashbucket ) ) ) ; err_ahash_alloc : percpu_counter_destroy ( & sctp_sockets_allocated ) ; err_percpu_counter_init : kmem_cache_destroy ( sctp_chunk_cachep ) ; err_chunk_cachep : kmem_cache_destroy ( sctp_bucket_cachep ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; status = register_pernet_subsys ( & sctp_defaults_ops ) ; if ( status ) goto err_register_defaults ; status = <S2SV_ModStart> register_pernet_subsys ( & sctp_ctrlsock_ops ) ; if ( status ) goto err_register_ctrlsock <S2SV_ModEnd> ; status = <S2SV_ModStart> unregister_pernet_subsys ( & sctp_ctrlsock_ops ) ; err_register_ctrlsock <S2SV_ModEnd> : sctp_v6_protosw_exit ( <S2SV_ModStart> ) ; err_protosw_init : unregister_pernet_subsys ( & sctp_defaults_ops ) ; err_register_defaults\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2636\n\n```\nCWE-399 static int br_mdb_dump ( struct sk_buff * skb , struct netlink_callback * cb ) { struct net_device * dev ; struct net * net = sock_net ( skb -> sk ) ; struct nlmsghdr * nlh = NULL ; int idx = 0 , s_idx ; s_idx = cb -> args [ 0 ] ; rcu_read_lock ( ) ; cb -> seq = net -> dev_base_seq + br_mdb_rehash_seq ; for_each_netdev_rcu ( net , dev ) { if ( dev -> priv_flags & IFF_EBRIDGE ) { struct br_port_msg * bpm ; if ( idx < s_idx ) goto skip ; nlh = nlmsg_put ( skb , NETLINK_CB ( cb -> skb ) . portid , cb -> nlh -> nlmsg_seq , RTM_GETMDB , sizeof ( * bpm ) , NLM_F_MULTI ) ; if ( nlh == NULL ) break ; <S2SV_StartBug> bpm = nlmsg_data ( nlh ) ; <S2SV_EndBug> bpm -> ifindex = dev -> ifindex ; if ( br_mdb_fill_info ( skb , cb , dev ) < 0 ) goto out ; if ( br_rports_fill_info ( skb , cb , dev ) < 0 ) goto out ; cb -> args [ 1 ] = 0 ; nlmsg_end ( skb , nlh ) ; skip : idx ++ ; } } out : if ( nlh ) nlmsg_end ( skb , nlh ) ; rcu_read_unlock ( ) ; cb -> args [ 0 ] = idx ; return skb -> len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nlmsg_data ( nlh ) ; memset ( bpm , 0 , sizeof ( * bpm )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5195\n\n```\nCWE-362 static int faultin_page ( struct task_struct * tsk , struct vm_area_struct * vma , unsigned long address , unsigned int * flags , int * nonblocking ) { unsigned int fault_flags = 0 ; int ret ; if ( ( * flags & ( FOLL_POPULATE | FOLL_MLOCK ) ) == FOLL_MLOCK ) return - ENOENT ; if ( ( * flags & FOLL_POPULATE ) && ( stack_guard_page_start ( vma , address ) || stack_guard_page_end ( vma , address + PAGE_SIZE ) ) ) return - ENOENT ; if ( * flags & FOLL_WRITE ) fault_flags |= FAULT_FLAG_WRITE ; if ( * flags & FOLL_REMOTE ) fault_flags |= FAULT_FLAG_REMOTE ; if ( nonblocking ) fault_flags |= FAULT_FLAG_ALLOW_RETRY ; if ( * flags & FOLL_NOWAIT ) fault_flags |= FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_RETRY_NOWAIT ; if ( * flags & FOLL_TRIED ) { VM_WARN_ON_ONCE ( fault_flags & FAULT_FLAG_ALLOW_RETRY ) ; fault_flags |= FAULT_FLAG_TRIED ; } ret = handle_mm_fault ( vma , address , fault_flags ) ; if ( ret & VM_FAULT_ERROR ) { if ( ret & VM_FAULT_OOM ) return - ENOMEM ; if ( ret & ( VM_FAULT_HWPOISON | VM_FAULT_HWPOISON_LARGE ) ) return * flags & FOLL_HWPOISON ? - EHWPOISON : - EFAULT ; if ( ret & ( VM_FAULT_SIGBUS | VM_FAULT_SIGSEGV ) ) return - EFAULT ; BUG ( ) ; } if ( tsk ) { if ( ret & VM_FAULT_MAJOR ) tsk -> maj_flt ++ ; else tsk -> min_flt ++ ; } if ( ret & VM_FAULT_RETRY ) { if ( nonblocking ) * nonblocking = 0 ; return - EBUSY ; } if ( ( ret & VM_FAULT_WRITE ) && ! ( vma -> vm_flags & VM_WRITE ) ) <S2SV_StartBug> * flags &= ~ FOLL_WRITE ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) * flags |= FOLL_COW <S2SV_ModEnd> ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void encode_block_pass1 ( int plane , int block , BLOCK_SIZE plane_bsize , TX_SIZE tx_size , void * arg ) { MACROBLOCK * const x = ( MACROBLOCK * ) arg ; MACROBLOCKD * const xd = & x -> e_mbd ; struct macroblock_plane * const p = & x -> plane [ plane ] ; struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; <S2SV_StartBug> int16_t * const dqcoeff = BLOCK_OFFSET ( pd -> dqcoeff , block ) ; <S2SV_EndBug> int i , j ; uint8_t * dst ; txfrm_block_to_raster_xy ( plane_bsize , tx_size , block , & i , & j ) ; dst = & pd -> dst . buf [ 4 * j * pd -> dst . stride + 4 * i ] ; vp9_xform_quant ( x , plane , block , plane_bsize , tx_size ) ; if ( p -> eobs [ block ] > 0 ) <S2SV_StartBug> xd -> itxm_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> plane ] ; tran_low_t <S2SV_ModEnd> * const dqcoeff <S2SV_ModStart> > 0 ) { # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { x -> highbd_itxm_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] , xd -> bd ) ; return ; } # endif x <S2SV_ModEnd> -> itxm_add ( <S2SV_ModStart> ] ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , char * * argv ) { FILE * infile = NULL ; <S2SV_StartBug> VpxVideoWriter * writer = NULL ; <S2SV_EndBug> vpx_codec_ctx_t codec ; vpx_codec_enc_cfg_t cfg ; vpx_image_t raw ; vpx_codec_err_t res ; <S2SV_StartBug> vpx_fixed_buf_t stats = { 0 } ; <S2SV_EndBug> VpxVideoInfo info = { 0 } ; <S2SV_StartBug> const VpxInterface * encoder = NULL ; <S2SV_EndBug> int pass ; const int fps = 30 ; const int bitrate = 200 ; const char * const codec_arg = argv [ 1 ] ; const char * const width_arg = argv [ 2 ] ; const char * const height_arg = argv [ 3 ] ; const char * const infile_arg = argv [ 4 ] ; const char * const outfile_arg = argv [ 5 ] ; exec_name = argv [ 0 ] ; if ( argc != 6 ) die ( \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments.\" ) ; encoder = get_vpx_encoder_by_name ( codec_arg ) ; if ( ! encoder ) die ( \"Unsupported<S2SV_blank>codec.\" ) ; <S2SV_StartBug> info . codec_fourcc = encoder -> fourcc ; <S2SV_EndBug> info . time_base . numerator = 1 ; info . time_base . denominator = fps ; info . frame_width = strtol ( width_arg , NULL , 0 ) ; <S2SV_StartBug> info . frame_height = strtol ( height_arg , NULL , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( info . frame_width <= 0 || <S2SV_EndBug> <S2SV_StartBug> info . frame_height <= 0 || <S2SV_EndBug> <S2SV_StartBug> ( info . frame_width % 2 ) != 0 || <S2SV_EndBug> <S2SV_StartBug> ( info . frame_height % 2 ) != 0 ) { <S2SV_EndBug> <S2SV_StartBug> die ( \"Invalid<S2SV_blank>frame<S2SV_blank>size:<S2SV_blank>%dx%d\" , info . frame_width , info . frame_height ) ; <S2SV_EndBug> } <S2SV_StartBug> if ( ! vpx_img_alloc ( & raw , VPX_IMG_FMT_I420 , info . frame_width , <S2SV_EndBug> <S2SV_StartBug> info . frame_height , 1 ) ) { <S2SV_EndBug> <S2SV_StartBug> die ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>image\" , info . frame_width , info . frame_height ) ; <S2SV_EndBug> } writer = vpx_video_writer_open ( outfile_arg , kContainerIVF , & info ) ; if ( ! writer ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\" , outfile_arg ) ; printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( encoder -> interface ( ) ) ) ; res = vpx_codec_enc_config_default ( encoder -> interface ( ) , & cfg , 0 ) ; if ( res ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>default<S2SV_blank>codec<S2SV_blank>config.\" ) ; cfg . g_w = info . frame_width ; cfg . g_h = info . frame_height ; cfg . g_timebase . num = info . time_base . numerator ; cfg . g_timebase . den = info . time_base . denominator ; cfg . rc_target_bitrate = bitrate ; for ( pass = 0 ; pass < 2 ; ++ pass ) { int frame_count = 0 ; if ( pass == 0 ) { cfg . g_pass = VPX_RC_FIRST_PASS ; } else { cfg . g_pass = VPX_RC_LAST_PASS ; cfg . rc_twopass_stats_in = stats ; } if ( ! ( infile = fopen ( infile_arg , \"rb\" ) ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading\" , infile_arg ) ; if ( vpx_codec_enc_init ( & codec , encoder -> interface ( ) , & cfg , 0 ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>encoder\" ) ; <S2SV_StartBug> while ( vpx_img_read ( & raw , infile ) ) { <S2SV_EndBug> ++ frame_count ; if ( pass == 0 ) { get_frame_stats ( & codec , & raw , frame_count , 1 , 0 , VPX_DL_BEST_QUALITY , & stats ) ; } else { encode_frame ( & codec , & raw , frame_count , 1 , 0 , VPX_DL_BEST_QUALITY , writer ) ; } } if ( pass == 0 ) { get_frame_stats ( & codec , NULL , frame_count , 1 , 0 , VPX_DL_BEST_QUALITY , & stats ) ; } else { printf ( \"\\\\n\" ) ; } <S2SV_StartBug> fclose ( infile ) ; <S2SV_EndBug> printf ( \"Pass<S2SV_blank>%d<S2SV_blank>complete.<S2SV_blank>Processed<S2SV_blank>%d<S2SV_blank>frames.\\\\n\" , pass + 1 , frame_count ) ; if ( vpx_codec_destroy ( & codec ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>codec.\" ) ; } vpx_img_free ( & raw ) ; free ( stats . buf ) ; vpx_video_writer_close ( writer ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; int w , h <S2SV_ModEnd> ; vpx_codec_ctx_t codec <S2SV_ModStart> ; vpx_fixed_buf_t stats <S2SV_ModEnd> ; const VpxInterface <S2SV_ModStart> encoder = NULL <S2SV_ModEnd> ; const int <S2SV_ModStart> \"Unsupported<S2SV_blank>codec.\" ) ; w <S2SV_ModEnd> = strtol ( <S2SV_ModStart> 0 ) ; h <S2SV_ModEnd> = strtol ( <S2SV_ModStart> ; if ( w <S2SV_ModEnd> <= 0 || <S2SV_ModStart> <= 0 || h <S2SV_ModEnd> <= 0 || <S2SV_ModStart> <= 0 || ( w <S2SV_ModEnd> % 2 ) <S2SV_ModStart> != 0 || ( h <S2SV_ModEnd> % 2 ) <S2SV_ModStart> != 0 ) <S2SV_ModEnd> die ( \"Invalid<S2SV_blank>frame<S2SV_blank>size:<S2SV_blank>%dx%d\" <S2SV_ModStart> ( \"Invalid<S2SV_blank>frame<S2SV_blank>size:<S2SV_blank>%dx%d\" , w , h ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> , VPX_IMG_FMT_I420 , w , h <S2SV_ModEnd> , 1 ) <S2SV_ModStart> 1 ) ) <S2SV_ModEnd> die ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>image\" <S2SV_ModStart> ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>image\" , w , h ) ; printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( encoder -> codec_interface ( ) ) ) ; res = vpx_codec_enc_config_default ( encoder -> codec_interface ( ) , & cfg , 0 ) ; if ( res ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>default<S2SV_blank>codec<S2SV_blank>config.\" ) ; cfg . g_w = w ; cfg . g_h = h ; cfg . g_timebase . num = 1 ; cfg . g_timebase . den = fps ; cfg . rc_target_bitrate = bitrate ; if ( ! ( infile = fopen ( infile_arg , \"rb\" ) ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading\" , infile_arg ) ; cfg . g_pass = VPX_RC_FIRST_PASS ; stats = pass0 ( & raw , infile , encoder , & cfg ) ; rewind ( infile ) ; cfg . g_pass = VPX_RC_LAST_PASS ; cfg . rc_twopass_stats_in = stats ; pass1 ( & raw , infile , outfile_arg , encoder , & cfg ) ; free ( stats . buf ) ; vpx_img_free <S2SV_ModEnd> ( & raw <S2SV_ModStart> ( & raw ) ; <S2SV_ModEnd> fclose ( infile <S2SV_ModStart> fclose ( infile <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_idct8x8_add ( const int16_t * input , uint8_t * dest , int stride , int eob ) { <S2SV_EndBug> if ( eob == 1 ) <S2SV_StartBug> vp9_idct8x8_1_add ( input , dest , stride ) ; <S2SV_EndBug> <S2SV_StartBug> else if ( eob <= 10 ) <S2SV_EndBug> vp9_idct8x8_10_add ( input , dest , stride ) ; else <S2SV_StartBug> vp9_idct8x8_64_add ( input , dest , stride ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_idct8x8_add ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> == 1 ) vpx_idct8x8_1_add <S2SV_ModEnd> ( input , <S2SV_ModStart> ( eob <= 12 ) vpx_idct8x8_12_add <S2SV_ModEnd> ( input , <S2SV_ModStart> ) ; else vpx_idct8x8_64_add <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 Bool GPAC_EventProc ( void * ptr , GF_Event * evt ) { if ( ! term ) return 0 ; if ( gui_mode == 1 ) { if ( evt -> type == GF_EVENT_QUIT ) { Run = 0 ; } else if ( evt -> type == GF_EVENT_KEYDOWN ) { switch ( evt -> key . key_code ) { case GF_KEY_C : if ( evt -> key . flags & ( GF_KEY_MOD_CTRL | GF_KEY_MOD_ALT ) ) { hide_shell ( shell_visible ? 1 : 0 ) ; if ( shell_visible ) gui_mode = 2 ; } break ; default : break ; } } return 0 ; } switch ( evt -> type ) { case GF_EVENT_DURATION : Duration = ( u64 ) ( 1000 * ( s64 ) evt -> duration . duration ) ; CanSeek = evt -> duration . can_seek ; break ; case GF_EVENT_MESSAGE : { const char * servName ; if ( ! evt -> message . service || ! strcmp ( evt -> message . service , the_url ) ) { servName = \"\" ; } else if ( ! strnicmp ( evt -> message . service , \"data:\" , 5 ) ) { servName = \"(embedded<S2SV_blank>data)\" ; } else { servName = evt -> message . service ; } if ( ! evt -> message . message ) return 0 ; if ( evt -> message . error ) { if ( ! is_connected ) last_error = evt -> message . error ; if ( evt -> message . error == GF_SCRIPT_INFO ) { GF_LOG ( GF_LOG_INFO , GF_LOG_CONSOLE , ( \"%s\\\\n\" , evt -> message . message ) ) ; } else { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONSOLE , ( \"%s<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , servName , evt -> message . message , gf_error_to_string ( evt -> message . error ) ) ) ; } } else if ( ! be_quiet ) GF_LOG ( GF_LOG_INFO , GF_LOG_CONSOLE , ( \"%s<S2SV_blank>%s\\\\n\" , servName , evt -> message . message ) ) ; } break ; case GF_EVENT_PROGRESS : { char * szTitle = \"\" ; if ( evt -> progress . progress_type == 0 ) { szTitle = \"Buffer<S2SV_blank>\" ; if ( bench_mode && ( bench_mode != 3 ) ) { if ( evt -> progress . done >= evt -> progress . total ) bench_buffer = 0 ; else bench_buffer = 1 + 100 * evt -> progress . done / evt -> progress . total ; break ; } } else if ( evt -> progress . progress_type == 1 ) { if ( bench_mode ) break ; szTitle = \"Download<S2SV_blank>\" ; } else if ( evt -> progress . progress_type == 2 ) szTitle = \"Import<S2SV_blank>\" ; gf_set_progress ( szTitle , evt -> progress . done , evt -> progress . total ) ; } break ; case GF_EVENT_DBLCLICK : gf_term_set_option ( term , GF_OPT_FULLSCREEN , ! gf_term_get_option ( term , GF_OPT_FULLSCREEN ) ) ; return 0 ; case GF_EVENT_MOUSEDOWN : if ( evt -> mouse . button == GF_MOUSE_RIGHT ) { right_down = 1 ; last_x = evt -> mouse . x ; last_y = evt -> mouse . y ; } return 0 ; case GF_EVENT_MOUSEUP : if ( evt -> mouse . button == GF_MOUSE_RIGHT ) { right_down = 0 ; last_x = evt -> mouse . x ; last_y = evt -> mouse . y ; } return 0 ; case GF_EVENT_MOUSEMOVE : if ( right_down && ( user . init_flags & GF_TERM_WINDOWLESS ) ) { GF_Event move ; move . move . x = evt -> mouse . x - last_x ; move . move . y = last_y - evt -> mouse . y ; move . type = GF_EVENT_MOVE ; move . move . relative = 1 ; gf_term_user_event ( term , & move ) ; } return 0 ; case GF_EVENT_KEYUP : switch ( evt -> key . key_code ) { case GF_KEY_SPACE : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) switch_bench ( ! bench_mode ) ; break ; } break ; case GF_EVENT_KEYDOWN : gf_term_process_shortcut ( term , evt ) ; switch ( evt -> key . key_code ) { case GF_KEY_SPACE : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) { if ( ! bench_mode ) switch_bench ( ! bench_mode ) ; } break ; case GF_KEY_PAGEDOWN : case GF_KEY_MEDIANEXTTRACK : request_next_playlist_item = 1 ; break ; case GF_KEY_MEDIAPREVIOUSTRACK : break ; case GF_KEY_ESCAPE : gf_term_set_option ( term , GF_OPT_FULLSCREEN , ! gf_term_get_option ( term , GF_OPT_FULLSCREEN ) ) ; break ; case GF_KEY_C : if ( evt -> key . flags & ( GF_KEY_MOD_CTRL | GF_KEY_MOD_ALT ) ) { hide_shell ( shell_visible ? 1 : 0 ) ; if ( ! shell_visible ) gui_mode = 1 ; } break ; case GF_KEY_F : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) fprintf ( stderr , \"Rendering<S2SV_blank>rate:<S2SV_blank>%f<S2SV_blank>FPS\\\\n\" , gf_term_get_framerate ( term , 0 ) ) ; break ; case GF_KEY_T : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) fprintf ( stderr , \"Scene<S2SV_blank>Time:<S2SV_blank>%f<S2SV_blank>\\\\n\" , gf_term_get_time_in_ms ( term ) / 1000.0 ) ; break ; case GF_KEY_D : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_DRAW_MODE , ( gf_term_get_option ( term , GF_OPT_DRAW_MODE ) == GF_DRAW_MODE_DEFER ) ? GF_DRAW_MODE_IMMEDIATE : GF_DRAW_MODE_DEFER ) ; break ; case GF_KEY_4 : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_4_3 ) ; break ; case GF_KEY_5 : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_16_9 ) ; break ; case GF_KEY_6 : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_FILL_SCREEN ) ; break ; case GF_KEY_7 : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_KEEP ) ; break ; case GF_KEY_O : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { if ( gf_term_get_option ( term , GF_OPT_MAIN_ADDON ) ) { fprintf ( stderr , \"Resuming<S2SV_blank>to<S2SV_blank>main<S2SV_blank>content\\\\n\" ) ; gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_PLAY_LIVE ) ; } else { fprintf ( stderr , \"Main<S2SV_blank>addon<S2SV_blank>not<S2SV_blank>enabled\\\\n\" ) ; } } break ; case GF_KEY_P : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { u32 pause_state = gf_term_get_option ( term , GF_OPT_PLAY_STATE ) ; fprintf ( stderr , \"[Status:<S2SV_blank>%s]\\\\n\" , pause_state ? \"Playing\" : \"Paused\" ) ; if ( ( pause_state == GF_STATE_PAUSED ) && ( evt -> key . flags & GF_KEY_MOD_SHIFT ) ) { gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_PLAY_LIVE ) ; } else { gf_term_set_option ( term , GF_OPT_PLAY_STATE , ( pause_state == GF_STATE_PAUSED ) ? GF_STATE_PLAYING : GF_STATE_PAUSED ) ; } } break ; case GF_KEY_S : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_STEP_PAUSE ) ; fprintf ( stderr , \"Step<S2SV_blank>time:<S2SV_blank>\" ) ; PrintTime ( gf_term_get_time_in_ms ( term ) ) ; fprintf ( stderr , \"\\\\n\" ) ; } break ; case GF_KEY_B : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) ViewODs ( term , 1 ) ; break ; case GF_KEY_M : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) ViewODs ( term , 0 ) ; break ; case GF_KEY_H : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { gf_term_switch_quality ( term , 1 ) ; } break ; case GF_KEY_L : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { gf_term_switch_quality ( term , 0 ) ; } break ; case GF_KEY_F5 : if ( is_connected ) reload = 1 ; break ; case GF_KEY_A : addon_visible = ! addon_visible ; gf_term_toggle_addons ( term , addon_visible ) ; break ; case GF_KEY_UP : if ( ( evt -> key . flags & VK_MOD ) && is_connected ) { do_set_speed ( playback_speed * 2 ) ; } break ; case GF_KEY_DOWN : if ( ( evt -> key . flags & VK_MOD ) && is_connected ) { do_set_speed ( playback_speed / 2 ) ; } break ; case GF_KEY_LEFT : if ( ( evt -> key . flags & VK_MOD ) && is_connected ) { do_set_speed ( - 1 * playback_speed ) ; } break ; } break ; case GF_EVENT_CONNECT : if ( evt -> connect . is_connected ) { is_connected = 1 ; fprintf ( stderr , \"Service<S2SV_blank>Connected\\\\n\" ) ; eos_seen = GF_FALSE ; if ( playback_speed != FIX_ONE ) gf_term_set_speed ( term , playback_speed ) ; } else if ( is_connected ) { fprintf ( stderr , \"Service<S2SV_blank>%s\\\\n\" , is_connected ? \"Disconnected\" : \"Connection<S2SV_blank>Failed\" ) ; is_connected = 0 ; Duration = 0 ; } if ( init_w && init_h ) { gf_term_set_size ( term , init_w , init_h ) ; } ResetCaption ( ) ; break ; case GF_EVENT_EOS : eos_seen = GF_TRUE ; if ( playlist ) { if ( Duration > 1500 ) request_next_playlist_item = GF_TRUE ; } else if ( loop_at_end ) { restart = 1 ; } break ; case GF_EVENT_SIZE : if ( user . init_flags & GF_TERM_WINDOWLESS ) { GF_Event move ; move . type = GF_EVENT_MOVE ; move . move . align_x = align_mode & 0xFF ; move . move . align_y = ( align_mode >> 8 ) & 0xFF ; move . move . relative = 2 ; gf_term_user_event ( term , & move ) ; } break ; case GF_EVENT_SCENE_SIZE : if ( forced_width && forced_height ) { GF_Event size ; size . type = GF_EVENT_SIZE ; size . size . width = forced_width ; size . size . height = forced_height ; gf_term_user_event ( term , & size ) ; } break ; case GF_EVENT_METADATA : ResetCaption ( ) ; break ; case GF_EVENT_RELOAD : if ( is_connected ) reload = 1 ; break ; case GF_EVENT_DROPFILE : { u32 i , pos ; if ( readonly_playlist ) { gf_fclose ( playlist ) ; playlist = NULL ; } readonly_playlist = 0 ; if ( ! playlist ) { readonly_playlist = 0 ; playlist = gf_temp_file_new ( NULL ) ; } pos = ftell ( playlist ) ; i = 0 ; while ( i < evt -> open_file . nb_files ) { if ( evt -> open_file . files [ i ] != NULL ) { fprintf ( playlist , \"%s\\\\n\" , evt -> open_file . files [ i ] ) ; } i ++ ; } fseek ( playlist , pos , SEEK_SET ) ; request_next_playlist_item = 1 ; } return 1 ; case GF_EVENT_QUIT : if ( evt -> message . error ) { fprintf ( stderr , \"A<S2SV_blank>fatal<S2SV_blank>error<S2SV_blank>was<S2SV_blank>encoutered:<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>-<S2SV_blank>exiting<S2SV_blank>...\\\\n\" , evt -> message . message ? evt -> message . message : \"no<S2SV_blank>details\" , gf_error_to_string ( evt -> message . error ) ) ; } Run = 0 ; break ; case GF_EVENT_DISCONNECT : gf_term_disconnect ( term ) ; break ; case GF_EVENT_MIGRATE : { } break ; case GF_EVENT_NAVIGATE_INFO : if ( evt -> navigate . to_url ) fprintf ( stderr , \"Go<S2SV_blank>to<S2SV_blank>URL:<S2SV_blank>\\\\\"%s\\\\\"\\\\r\" , evt -> navigate . to_url ) ; break ; case GF_EVENT_NAVIGATE : if ( gf_term_is_supported_url ( term , evt -> navigate . to_url , 1 , no_mime_check ) ) { <S2SV_StartBug> strcpy ( the_url , evt -> navigate . to_url ) ; <S2SV_EndBug> fprintf ( stderr , \"Navigating<S2SV_blank>to<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_navigate_to ( term , evt -> navigate . to_url ) ; return 1 ; } else { fprintf ( stderr , \"Navigation<S2SV_blank>destination<S2SV_blank>not<S2SV_blank>supported\\\\nGo<S2SV_blank>to<S2SV_blank>URL:<S2SV_blank>%s\\\\n\" , evt -> navigate . to_url ) ; } break ; case GF_EVENT_SET_CAPTION : gf_term_user_event ( term , evt ) ; break ; case GF_EVENT_AUTHORIZATION : { int maxTries = 1 ; assert ( evt -> type == GF_EVENT_AUTHORIZATION ) ; assert ( evt -> auth . user ) ; assert ( evt -> auth . password ) ; assert ( evt -> auth . site_url ) ; while ( ( ! strlen ( evt -> auth . user ) || ! strlen ( evt -> auth . password ) ) && ( maxTries -- ) >= 0 ) { fprintf ( stderr , \"****<S2SV_blank>Authorization<S2SV_blank>required<S2SV_blank>for<S2SV_blank>site<S2SV_blank>%s<S2SV_blank>****\\\\n\" , evt -> auth . site_url ) ; fprintf ( stderr , \"login<S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>\" ) ; read_line_input ( evt -> auth . user , 50 , 1 ) ; fprintf ( stderr , \"\\\\npassword:<S2SV_blank>\" ) ; read_line_input ( evt -> auth . password , 50 , 0 ) ; fprintf ( stderr , \"*********\\\\n\" ) ; } if ( maxTries < 0 ) { fprintf ( stderr , \"****<S2SV_blank>No<S2SV_blank>User<S2SV_blank>or<S2SV_blank>password<S2SV_blank>has<S2SV_blank>been<S2SV_blank>filled,<S2SV_blank>aborting<S2SV_blank>***\\\\n\" ) ; return 0 ; } return 1 ; } case GF_EVENT_ADDON_DETECTED : if ( enable_add_ons ) { fprintf ( stderr , \"Media<S2SV_blank>Addon<S2SV_blank>%s<S2SV_blank>detected<S2SV_blank>-<S2SV_blank>enabling<S2SV_blank>it\\\\n\" , evt -> addon_connect . addon_url ) ; addon_visible = 1 ; } return enable_add_ons ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { strncpy <S2SV_ModEnd> ( the_url , <S2SV_ModStart> navigate . to_url , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_url ) - 1 ] = 0 <S2SV_ModEnd> ; fprintf (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15858\n\n```\nCWE-476 static bool CopyKeyAliasesToKeymap ( struct xkb_keymap * keymap , KeyNamesInfo * info ) { AliasInfo * alias ; unsigned i , num_key_aliases ; struct xkb_key_alias * key_aliases ; num_key_aliases = 0 ; darray_foreach ( alias , info -> aliases ) { if ( ! XkbKeyByName ( keymap , alias -> real , false ) ) { log_vrb ( info -> ctx , 5 , \"Attempt<S2SV_blank>to<S2SV_blank>alias<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>non-existent<S2SV_blank>key<S2SV_blank>%s;<S2SV_blank>Ignored\\\\n\" , KeyNameText ( info -> ctx , alias -> alias ) , KeyNameText ( info -> ctx , alias -> real ) ) ; alias -> real = XKB_ATOM_NONE ; continue ; } if ( XkbKeyByName ( keymap , alias -> alias , false ) ) { log_vrb ( info -> ctx , 5 , \"Attempt<S2SV_blank>to<S2SV_blank>create<S2SV_blank>alias<S2SV_blank>with<S2SV_blank>the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>a<S2SV_blank>real<S2SV_blank>key;<S2SV_blank>\" \"Alias<S2SV_blank>\\\\\"%s<S2SV_blank>=<S2SV_blank>%s\\\\\"<S2SV_blank>ignored\\\\n\" , KeyNameText ( info -> ctx , alias -> alias ) , KeyNameText ( info -> ctx , alias -> real ) ) ; alias -> real = XKB_ATOM_NONE ; continue ; } num_key_aliases ++ ; } key_aliases = NULL ; if ( num_key_aliases > 0 ) { key_aliases = calloc ( num_key_aliases , sizeof ( * key_aliases ) ) ; if ( ! key_aliases ) return false ; <S2SV_StartBug> } <S2SV_EndBug> i = 0 ; darray_foreach ( alias , info -> aliases ) { if ( alias -> real != XKB_ATOM_NONE ) { key_aliases [ i ] . alias = alias -> alias ; key_aliases [ i ] . real = alias -> real ; i ++ ; } } <S2SV_StartBug> keymap -> num_key_aliases = num_key_aliases ; <S2SV_EndBug> keymap -> key_aliases = key_aliases ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return false ; <S2SV_ModEnd> i = 0 <S2SV_ModStart> ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12894\n\n```\nCWE-125 <S2SV_StartBug> static inline struct enamemem * <S2SV_EndBug> lookup_bytestring ( netdissect_options * ndo , register const u_char * bs , const unsigned int nlen ) { <S2SV_StartBug> struct enamemem * tp ; <S2SV_EndBug> register u_int i , j , k ; if ( nlen >= 6 ) { k = ( bs [ 0 ] << 8 ) | bs [ 1 ] ; j = ( bs [ 2 ] << 8 ) | bs [ 3 ] ; i = ( bs [ 4 ] << 8 ) | bs [ 5 ] ; } else if ( nlen >= 4 ) { k = ( bs [ 0 ] << 8 ) | bs [ 1 ] ; j = ( bs [ 2 ] << 8 ) | bs [ 3 ] ; i = 0 ; } else i = j = k = 0 ; tp = & bytestringtable [ ( i ^ j ) & ( HASHNAMESIZE - 1 ) ] ; <S2SV_StartBug> while ( tp -> e_nxt ) <S2SV_EndBug> if ( tp -> e_addr0 == i && <S2SV_StartBug> tp -> e_addr1 == j && <S2SV_EndBug> <S2SV_StartBug> tp -> e_addr2 == k && <S2SV_EndBug> <S2SV_StartBug> memcmp ( ( const char * ) bs , ( const char * ) ( tp -> e_bs ) , nlen ) == 0 ) <S2SV_EndBug> return tp ; else <S2SV_StartBug> tp = tp -> e_nxt ; <S2SV_EndBug> tp -> e_addr0 = i ; tp -> e_addr1 = j ; tp -> e_addr2 = k ; tp -> e_bs = ( u_char * ) calloc ( 1 , nlen + 1 ) ; <S2SV_StartBug> if ( tp -> e_bs == NULL ) <S2SV_EndBug> ( * ndo -> ndo_error ) ( ndo , \"lookup_bytestring:<S2SV_blank>calloc\" ) ; <S2SV_StartBug> memcpy ( tp -> e_bs , bs , nlen ) ; <S2SV_EndBug> <S2SV_StartBug> tp -> e_nxt = ( struct enamemem * ) calloc ( 1 , sizeof ( * tp ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( tp -> e_nxt == NULL ) <S2SV_EndBug> ( * ndo -> ndo_error ) ( ndo , \"lookup_bytestring:<S2SV_blank>calloc\" ) ; return tp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> static inline struct bsnamemem <S2SV_ModEnd> * lookup_bytestring ( <S2SV_ModStart> ) { struct bsnamemem <S2SV_ModEnd> * tp ; <S2SV_ModStart> ( tp -> bs_nxt ) if ( nlen == tp -> bs_nbytes <S2SV_ModEnd> && tp -> <S2SV_ModStart> && tp -> bs_addr0 == i <S2SV_ModEnd> && tp -> <S2SV_ModStart> && tp -> bs_addr1 == j && tp -> bs_addr2 <S2SV_ModEnd> == k && <S2SV_ModStart> ( tp -> bs_bytes <S2SV_ModEnd> ) , nlen <S2SV_ModStart> = tp -> bs_nxt ; tp -> bs_addr0 = i ; tp -> bs_addr1 = j ; tp -> bs_addr2 = k ; tp -> bs_bytes <S2SV_ModEnd> = ( u_char <S2SV_ModStart> ( tp -> bs_bytes <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ( tp -> bs_bytes , bs , nlen ) ; tp -> bs_nbytes = nlen ; tp -> bs_nxt <S2SV_ModEnd> = ( struct <S2SV_ModStart> = ( struct bsnamemem <S2SV_ModEnd> * ) calloc <S2SV_ModStart> ( tp -> bs_nxt <S2SV_ModEnd> == NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , char * * argv ) { FILE * infile = NULL ; vpx_codec_ctx_t codec ; vpx_codec_enc_cfg_t cfg ; int frame_count = 0 ; vpx_image_t raw ; vpx_codec_err_t res ; VpxVideoInfo info = { 0 } ; VpxVideoWriter * writer = NULL ; const VpxInterface * encoder = NULL ; const int fps = 30 ; const int bitrate = 200 ; int keyframe_interval = 0 ; const char * codec_arg = NULL ; const char * width_arg = NULL ; const char * height_arg = NULL ; const char * infile_arg = NULL ; const char * outfile_arg = NULL ; const char * keyframe_interval_arg = NULL ; exec_name = argv [ 0 ] ; if ( argc < 7 ) die ( \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments\" ) ; codec_arg = argv [ 1 ] ; width_arg = argv [ 2 ] ; height_arg = argv [ 3 ] ; infile_arg = argv [ 4 ] ; outfile_arg = argv [ 5 ] ; keyframe_interval_arg = argv [ 6 ] ; encoder = get_vpx_encoder_by_name ( codec_arg ) ; if ( ! encoder ) die ( \"Unsupported<S2SV_blank>codec.\" ) ; info . codec_fourcc = encoder -> fourcc ; info . frame_width = strtol ( width_arg , NULL , 0 ) ; info . frame_height = strtol ( height_arg , NULL , 0 ) ; info . time_base . numerator = 1 ; info . time_base . denominator = fps ; if ( info . frame_width <= 0 || info . frame_height <= 0 || ( info . frame_width % 2 ) != 0 || ( info . frame_height % 2 ) != 0 ) { die ( \"Invalid<S2SV_blank>frame<S2SV_blank>size:<S2SV_blank>%dx%d\" , info . frame_width , info . frame_height ) ; } if ( ! vpx_img_alloc ( & raw , VPX_IMG_FMT_I420 , info . frame_width , info . frame_height , 1 ) ) { die ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>image.\" ) ; } keyframe_interval = strtol ( keyframe_interval_arg , NULL , 0 ) ; if ( keyframe_interval < 0 ) die ( \"Invalid<S2SV_blank>keyframe<S2SV_blank>interval<S2SV_blank>value.\" ) ; <S2SV_StartBug> printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( encoder -> interface ( ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> res = vpx_codec_enc_config_default ( encoder -> interface ( ) , & cfg , 0 ) ; <S2SV_EndBug> if ( res ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>default<S2SV_blank>codec<S2SV_blank>config.\" ) ; cfg . g_w = info . frame_width ; cfg . g_h = info . frame_height ; cfg . g_timebase . num = info . time_base . numerator ; cfg . g_timebase . den = info . time_base . denominator ; cfg . rc_target_bitrate = bitrate ; cfg . g_error_resilient = argc > 7 ? strtol ( argv [ 7 ] , NULL , 0 ) : 0 ; writer = vpx_video_writer_open ( outfile_arg , kContainerIVF , & info ) ; if ( ! writer ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing.\" , outfile_arg ) ; if ( ! ( infile = fopen ( infile_arg , \"rb\" ) ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading.\" , infile_arg ) ; <S2SV_StartBug> if ( vpx_codec_enc_init ( & codec , encoder -> interface ( ) , & cfg , 0 ) ) <S2SV_EndBug> die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>encoder\" ) ; while ( vpx_img_read ( & raw , infile ) ) { int flags = 0 ; if ( keyframe_interval > 0 && frame_count % keyframe_interval == 0 ) flags |= VPX_EFLAG_FORCE_KF ; encode_frame ( & codec , & raw , frame_count ++ , flags , writer ) ; } <S2SV_StartBug> encode_frame ( & codec , NULL , - 1 , 0 , writer ) ; <S2SV_EndBug> printf ( \"\\\\n\" ) ; fclose ( infile ) ; printf ( \"Processed<S2SV_blank>%d<S2SV_blank>frames.\\\\n\" , frame_count ) ; vpx_img_free ( & raw ) ; if ( vpx_codec_destroy ( & codec ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>codec.\" ) ; vpx_video_writer_close ( writer ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( encoder -> codec_interface <S2SV_ModEnd> ( ) ) <S2SV_ModStart> ( encoder -> codec_interface <S2SV_ModEnd> ( ) , <S2SV_ModStart> , encoder -> codec_interface <S2SV_ModEnd> ( ) , <S2SV_ModStart> ) ; } while ( <S2SV_ModStart> , writer ) ) { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7895\n\n```\nCWE-119 int nfs3svc_decode_symlinkargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd3_symlinkargs * args ) { unsigned int len , avail ; char * old , * new ; struct kvec * vec ; if ( ! ( p = decode_fh ( p , & args -> ffh ) ) || ! ( p = decode_filename ( p , & args -> fname , & args -> flen ) ) ) return 0 ; p = decode_sattr3 ( p , & args -> attrs ) ; len = ntohl ( * p ++ ) ; if ( len == 0 || len > NFS3_MAXPATHLEN || len >= PAGE_SIZE ) return 0 ; args -> tname = new = page_address ( * ( rqstp -> rq_next_page ++ ) ) ; args -> tlen = len ; old = ( char * ) p ; vec = & rqstp -> rq_arg . head [ 0 ] ; <S2SV_StartBug> avail = vec -> iov_len - ( old - ( char * ) vec -> iov_base ) ; <S2SV_EndBug> while ( len && avail && * old ) { * new ++ = * old ++ ; len -- ; avail -- ; } if ( len && ! avail && rqstp -> rq_arg . page_len ) { avail = min_t ( unsigned int , rqstp -> rq_arg . page_len , PAGE_SIZE ) ; old = page_address ( rqstp -> rq_arg . pages [ 0 ] ) ; } while ( len && avail && * old ) { * new ++ = * old ++ ; len -- ; avail -- ; } * new = '\\\\0' ; if ( len ) return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ] ; if ( ( void * ) old > vec -> iov_base + vec -> iov_len ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 void cJSON_Delete ( cJSON * c ) { cJSON * next ; while ( c ) { next = c -> next ; if ( ! ( c -> type & cJSON_IsReference ) && c -> child ) cJSON_Delete ( c -> child ) ; if ( ! ( c -> type & cJSON_IsReference ) && c -> valuestring ) cJSON_free ( c -> valuestring ) ; <S2SV_StartBug> if ( c -> string ) <S2SV_EndBug> cJSON_free ( c -> string ) ; cJSON_free ( c ) ; c = next ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! ( c -> type & cJSON_StringIsConst ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static inline int btif_hl_select_wake_reset ( void ) { char sig_recv = 0 ; BTIF_TRACE_DEBUG ( \"btif_hl_select_wake_reset\" ) ; <S2SV_StartBug> recv ( signal_fds [ 0 ] , & sig_recv , sizeof ( sig_recv ) , MSG_WAITALL ) ; <S2SV_EndBug> return ( int ) sig_recv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"btif_hl_select_wake_reset\" ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> , MSG_WAITALL ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 <S2SV_StartBug> void Huff_offsetTransmit ( huff_t * huff , int ch , byte * fout , int * offset ) { <S2SV_EndBug> bloc = * offset ; <S2SV_StartBug> send ( huff -> loc [ ch ] , NULL , fout ) ; <S2SV_EndBug> * offset = bloc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int * offset , int maxoffset <S2SV_ModStart> NULL , fout , maxoffset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10250\n\n```\nCWE-476 jp2_box_t * jp2_box_get ( jas_stream_t * in ) { jp2_box_t * box ; jp2_boxinfo_t * boxinfo ; jas_stream_t * tmpstream ; uint_fast32_t len ; uint_fast64_t extlen ; bool dataflag ; box = 0 ; tmpstream = 0 ; if ( ! ( box = jas_malloc ( sizeof ( jp2_box_t ) ) ) ) { goto error ; } box -> ops = & jp2_boxinfo_unk . ops ; if ( jp2_getuint32 ( in , & len ) || jp2_getuint32 ( in , & box -> type ) ) { goto error ; } boxinfo = jp2_boxinfolookup ( box -> type ) ; <S2SV_StartBug> box -> info = boxinfo ; <S2SV_EndBug> box -> ops = & boxinfo -> ops ; box -> len = len ; JAS_DBGLOG ( 10 , ( \"preliminary<S2SV_blank>processing<S2SV_blank>of<S2SV_blank>JP2<S2SV_blank>box:<S2SV_blank>type=%c%s%c<S2SV_blank>(0x%08x);<S2SV_blank>length=%d\\\\n\" , \\'\"\\' , boxinfo -> name , \\'\"\\' , box -> type , box -> len ) ) ; if ( box -> len == 1 ) { if ( jp2_getuint64 ( in , & extlen ) ) { goto error ; } if ( extlen > 0xffffffffUL ) { jas_eprintf ( \"warning:<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>large<S2SV_blank>64-bit<S2SV_blank>box<S2SV_blank>length\\\\n\" ) ; extlen = 0xffffffffUL ; } box -> len = extlen ; box -> datalen = extlen - JP2_BOX_HDRLEN ( true ) ; } else { box -> datalen = box -> len - JP2_BOX_HDRLEN ( false ) ; } if ( box -> len != 0 && box -> len < 8 ) { goto error ; } dataflag = ! ( box -> info -> flags & ( JP2_BOX_SUPER | JP2_BOX_NODATA ) ) ; if ( dataflag ) { if ( ! ( tmpstream = jas_stream_memopen ( 0 , 0 ) ) ) { goto error ; } if ( jas_stream_copy ( tmpstream , in , box -> datalen ) ) { <S2SV_StartBug> box -> ops = & jp2_boxinfo_unk . ops ; <S2SV_EndBug> jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; goto error ; } <S2SV_StartBug> jas_stream_rewind ( tmpstream ) ; <S2SV_EndBug> if ( box -> ops -> getdata ) { if ( ( * box -> ops -> getdata ) ( box , tmpstream ) ) { jas_eprintf ( \"cannot<S2SV_blank>parse<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; goto error ; } } jas_stream_close ( tmpstream ) ; } if ( jas_getdbglevel ( ) >= 1 ) { jp2_box_dump ( box , stderr ) ; } return box ; error : if ( box ) { jp2_box_destroy ( box ) ; } if ( tmpstream ) { jas_stream_close ( tmpstream ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> info = boxinfo <S2SV_ModEnd> ; box -> <S2SV_ModStart> ) ) { <S2SV_ModEnd> jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" <S2SV_ModStart> ( tmpstream ) ; box -> ops = & boxinfo -> ops\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 static void record_recent_object ( struct object * obj , <S2SV_StartBug> struct strbuf * path , <S2SV_EndBug> <S2SV_StartBug> const char * last , <S2SV_EndBug> void * data ) { sha1_array_append ( & recent_objects , obj -> oid . hash ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 void big_key_revoke ( struct key * key ) { struct path * path = ( struct path * ) & key -> payload . data [ big_key_path ] ; key_payload_reserve ( key , 0 ) ; <S2SV_StartBug> if ( key_is_instantiated ( key ) && <S2SV_EndBug> ( size_t ) key -> payload . data [ big_key_len ] > BIG_KEY_FILE_THRESHOLD ) vfs_truncate ( path , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( key )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4645\n\n```\nCWE-190 int read_xattrs_from_disk ( int fd , struct squashfs_super_block * sBlk , int flag , long long * table_start ) { <S2SV_StartBug> int res , bytes , i , indexes , index_bytes , ids ; <S2SV_EndBug> long long * index , start , end ; struct squashfs_xattr_table id_table ; TRACE ( \"read_xattrs_from_disk\\\\n\" ) ; if ( sBlk -> xattr_id_table_start == SQUASHFS_INVALID_BLK ) return SQUASHFS_INVALID_BLK ; res = read_fs_bytes ( fd , sBlk -> xattr_id_table_start , sizeof ( id_table ) , & id_table ) ; if ( res == 0 ) return 0 ; SQUASHFS_INSWAP_XATTR_TABLE ( & id_table ) ; <S2SV_StartBug> if ( flag ) { <S2SV_EndBug> * table_start = id_table . xattr_table_start ; <S2SV_StartBug> return id_table . xattr_ids ; <S2SV_EndBug> } ids = id_table . xattr_ids ; xattr_table_start = id_table . xattr_table_start ; index_bytes = SQUASHFS_XATTR_BLOCK_BYTES ( ids ) ; indexes = SQUASHFS_XATTR_BLOCKS ( ids ) ; index = malloc ( index_bytes ) ; if ( index == NULL ) MEM_ERROR ( ) ; <S2SV_StartBug> res = read_fs_bytes ( fd , sBlk -> xattr_id_table_start + sizeof ( id_table ) , <S2SV_EndBug> index_bytes , index ) ; if ( res == 0 ) goto failed1 ; SQUASHFS_INSWAP_LONG_LONGS ( index , indexes ) ; <S2SV_StartBug> bytes = SQUASHFS_XATTR_BYTES ( ids ) ; <S2SV_EndBug> xattr_ids = malloc ( bytes ) ; if ( xattr_ids == NULL ) MEM_ERROR ( ) ; for ( i = 0 ; i < indexes ; i ++ ) { int expected = ( i + 1 ) != indexes ? SQUASHFS_METADATA_SIZE : bytes & ( SQUASHFS_METADATA_SIZE - 1 ) ; int length = read_block ( fd , index [ i ] , NULL , expected , ( ( unsigned char * ) xattr_ids ) + <S2SV_StartBug> ( i * SQUASHFS_METADATA_SIZE ) ) ; <S2SV_EndBug> TRACE ( \"Read<S2SV_blank>xattr<S2SV_blank>id<S2SV_blank>table<S2SV_blank>block<S2SV_blank>%d,<S2SV_blank>from<S2SV_blank>0x%llx,<S2SV_blank>length<S2SV_blank>\" \"%d\\\\n\" , i , index [ i ] , length ) ; if ( length == 0 ) { ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>xattr<S2SV_blank>id<S2SV_blank>table<S2SV_blank>block<S2SV_blank>%d,<S2SV_blank>\" \"from<S2SV_blank>0x%llx,<S2SV_blank>length<S2SV_blank>%d\\\\n\" , i , index [ i ] , length ) ; goto failed2 ; } } start = xattr_table_start ; end = index [ 0 ] ; for ( i = 0 ; start < end ; i ++ ) { int length ; xattrs = realloc ( xattrs , ( i + 1 ) * SQUASHFS_METADATA_SIZE ) ; if ( xattrs == NULL ) MEM_ERROR ( ) ; save_xattr_block ( start , i * SQUASHFS_METADATA_SIZE ) ; length = read_block ( fd , start , & start , 0 , ( ( unsigned char * ) xattrs ) + ( i * SQUASHFS_METADATA_SIZE ) ) ; TRACE ( \"Read<S2SV_blank>xattr<S2SV_blank>block<S2SV_blank>%d,<S2SV_blank>length<S2SV_blank>%d\\\\n\" , i , length ) ; if ( length == 0 ) { ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>xattr<S2SV_blank>block<S2SV_blank>%d\\\\n\" , i ) ; goto failed3 ; } if ( start != end && length != SQUASHFS_METADATA_SIZE ) { ERROR ( \"Xattr<S2SV_blank>block<S2SV_blank>%d<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>length,<S2SV_blank>\" \"it<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , i , SQUASHFS_METADATA_SIZE , length ) ; goto failed3 ; } } for ( i = 0 ; i < ids ; i ++ ) SQUASHFS_INSWAP_XATTR_ID ( & xattr_ids [ i ] ) ; free ( index ) ; return ids ; failed3 : free ( xattrs ) ; failed2 : free ( xattr_ids ) ; failed1 : free ( index ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int res , i , indexes , index_bytes ; unsigned int ids ; long long bytes <S2SV_ModEnd> ; long long <S2SV_ModStart> id_table ) ; ids = id_table . xattr_ids ; xattr_table_start <S2SV_ModEnd> = id_table . <S2SV_ModStart> . xattr_table_start ; index_bytes = SQUASHFS_XATTR_BLOCK_BYTES ( ( long long ) ids ) ; indexes = SQUASHFS_XATTR_BLOCKS ( ( long long ) ids ) ; if ( index_bytes != ( sBlk -> bytes_used - ( <S2SV_ModEnd> sBlk -> xattr_id_table_start <S2SV_ModStart> ( id_table ) ) ) ) { ERROR ( \"read_xattrs_from_disk:<S2SV_blank>Bad<S2SV_blank>xattr_ids<S2SV_blank>count<S2SV_blank>in<S2SV_blank>super<S2SV_blank>block\\\\n\" ) ; return 0 ; } if ( table_start != NULL ) * table_start = id_table . xattr_table_start ; if ( flag ) return id_table . xattr_ids ; index = malloc ( index_bytes ) ; if ( index == NULL ) MEM_ERROR ( ) ; res = read_fs_bytes ( fd , sBlk -> xattr_id_table_start + sizeof ( id_table ) <S2SV_ModStart> = SQUASHFS_XATTR_BYTES ( ( long long ) <S2SV_ModStart> ) + ( ( long long )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-36316\n\n```\nCWE-120 static int pad_pkcs2 ( bn_t m , int * p_len , int m_len , int k_len , int operation ) { uint8_t pad , h1 [ RLC_MD_LEN ] , h2 [ RLC_MD_LEN ] ; uint8_t * mask = RLC_ALLOCA ( uint8_t , k_len ) ; <S2SV_StartBug> int result = RLC_OK ; <S2SV_EndBug> bn_t t ; bn_null ( t ) ; RLC_TRY { bn_new ( t ) ; switch ( operation ) { case RSA_ENC : md_map ( h1 , NULL , 0 ) ; bn_read_bin ( m , h1 , RLC_MD_LEN ) ; * p_len = k_len - 2 * RLC_MD_LEN - 2 - m_len ; bn_lsh ( m , m , * p_len * 8 ) ; bn_lsh ( m , m , 8 ) ; bn_add_dig ( m , m , 0x01 ) ; bn_lsh ( m , m , m_len * 8 ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case RSA_ENC_FIN : rand_bytes ( h1 , RLC_MD_LEN ) ; md_mgf ( mask , k_len - RLC_MD_LEN - 1 , h1 , RLC_MD_LEN ) ; bn_read_bin ( t , mask , k_len - RLC_MD_LEN - 1 ) ; for ( int i = 0 ; i < t -> used ; i ++ ) { m -> dp [ i ] ^= t -> dp [ i ] ; } bn_write_bin ( mask , k_len - RLC_MD_LEN - 1 , m ) ; md_mgf ( h2 , RLC_MD_LEN , mask , k_len - RLC_MD_LEN - 1 ) ; for ( int i = 0 ; i < RLC_MD_LEN ; i ++ ) { h1 [ i ] ^= h2 [ i ] ; } bn_read_bin ( t , h1 , RLC_MD_LEN ) ; bn_lsh ( t , t , 8 * ( k_len - RLC_MD_LEN - 1 ) ) ; bn_add ( t , t , m ) ; bn_copy ( m , t ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case RSA_DEC : m_len = k_len - 1 ; bn_rsh ( t , m , 8 * m_len ) ; <S2SV_StartBug> if ( ! bn_is_zero ( t ) ) { <S2SV_EndBug> <S2SV_StartBug> result = RLC_ERR ; <S2SV_EndBug> } m_len -= RLC_MD_LEN ; bn_rsh ( t , m , 8 * m_len ) ; bn_write_bin ( h1 , RLC_MD_LEN , t ) ; bn_mod_2b ( m , m , 8 * m_len ) ; bn_write_bin ( mask , m_len , m ) ; md_mgf ( h2 , RLC_MD_LEN , mask , m_len ) ; for ( int i = 0 ; i < RLC_MD_LEN ; i ++ ) { h1 [ i ] ^= h2 [ i ] ; } md_mgf ( mask , k_len - RLC_MD_LEN - 1 , h1 , RLC_MD_LEN ) ; bn_read_bin ( t , mask , k_len - RLC_MD_LEN - 1 ) ; for ( int i = 0 ; i < t -> used ; i ++ ) { m -> dp [ i ] ^= t -> dp [ i ] ; } m_len -= RLC_MD_LEN ; bn_rsh ( t , m , 8 * m_len ) ; bn_write_bin ( h2 , RLC_MD_LEN , t ) ; md_map ( h1 , NULL , 0 ) ; pad = 0 ; for ( int i = 0 ; i < RLC_MD_LEN ; i ++ ) { <S2SV_StartBug> pad |= h1 [ i ] - h2 [ i ] ; <S2SV_EndBug> } <S2SV_StartBug> if ( result == RLC_OK ) { <S2SV_EndBug> result = ( pad ? RLC_ERR : RLC_OK ) ; } <S2SV_StartBug> bn_mod_2b ( m , m , 8 * m_len ) ; <S2SV_EndBug> * p_len = bn_size_bin ( m ) ; ( * p_len ) -- ; bn_rsh ( t , m , * p_len * 8 ) ; if ( bn_cmp_dig ( t , 1 ) != RLC_EQ ) { result = RLC_ERR ; } bn_mod_2b ( m , m , * p_len * 8 ) ; * p_len = k_len - * p_len ; break ; case RSA_SIG : case RSA_SIG_HASH : bn_zero ( m ) ; bn_lsh ( m , m , 64 ) ; bn_lsh ( m , m , RLC_MD_LEN * 8 ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case RSA_SIG_FIN : memset ( mask , 0 , 8 ) ; bn_write_bin ( mask + 8 , RLC_MD_LEN , m ) ; md_map ( h1 , mask , RLC_MD_LEN + 8 ) ; bn_read_bin ( m , h1 , RLC_MD_LEN ) ; md_mgf ( mask , k_len - RLC_MD_LEN - 1 , h1 , RLC_MD_LEN ) ; bn_read_bin ( t , mask , k_len - RLC_MD_LEN - 1 ) ; t -> dp [ 0 ] ^= 0x01 ; bn_lsh ( t , t , 8 * RLC_MD_LEN ) ; bn_add ( m , t , m ) ; bn_lsh ( m , m , 8 ) ; bn_add_dig ( m , m , RSA_PSS ) ; for ( int i = m_len - 1 ; i < 8 * k_len ; i ++ ) { bn_set_bit ( m , i , 0 ) ; } <S2SV_StartBug> break ; <S2SV_EndBug> case RSA_VER : case RSA_VER_HASH : bn_mod_2b ( t , m , 8 ) ; <S2SV_StartBug> if ( bn_cmp_dig ( t , RSA_PSS ) != RLC_EQ ) { <S2SV_EndBug> result = RLC_ERR ; } else { for ( int i = m_len ; i < 8 * k_len ; i ++ ) { if ( bn_get_bit ( m , i ) != 0 ) { result = RLC_ERR ; } } bn_rsh ( m , m , 8 ) ; bn_mod_2b ( t , m , 8 * RLC_MD_LEN ) ; bn_write_bin ( h2 , RLC_MD_LEN , t ) ; bn_rsh ( m , m , 8 * RLC_MD_LEN ) ; bn_write_bin ( h1 , RLC_MD_LEN , t ) ; md_mgf ( mask , k_len - RLC_MD_LEN - 1 , h1 , RLC_MD_LEN ) ; bn_read_bin ( t , mask , k_len - RLC_MD_LEN - 1 ) ; for ( int i = 0 ; i < t -> used ; i ++ ) { m -> dp [ i ] ^= t -> dp [ i ] ; } m -> dp [ 0 ] ^= 0x01 ; for ( int i = m_len - 1 ; i < 8 * k_len ; i ++ ) { bn_set_bit ( m , i - ( ( RLC_MD_LEN + 1 ) * 8 ) , 0 ) ; } <S2SV_StartBug> if ( ! bn_is_zero ( m ) ) { <S2SV_EndBug> <S2SV_StartBug> result = RLC_ERR ; <S2SV_EndBug> } bn_read_bin ( m , h2 , RLC_MD_LEN ) ; * p_len = k_len - RLC_MD_LEN ; } break ; } } RLC_CATCH_ANY { result = RLC_ERR ; } RLC_FINALLY { bn_free ( t ) ; } RLC_FREE ( mask ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int result = RLC_ERR <S2SV_ModEnd> ; bn_t t <S2SV_ModStart> 8 ) ; result = RLC_OK ; <S2SV_ModStart> t ) ; result = RLC_OK ; <S2SV_ModStart> ; if ( <S2SV_ModEnd> bn_is_zero ( t <S2SV_ModStart> ) ) { <S2SV_ModEnd> m_len -= RLC_MD_LEN <S2SV_ModStart> [ i ] ^ <S2SV_ModEnd> h2 [ i <S2SV_ModStart> ] ; } bn_mod_2b ( m , m , 8 * m_len ) ; * p_len = bn_size_bin ( m ) ; ( * p_len ) -- ; bn_rsh ( t , m , * p_len * 8 ) ; if ( pad == 0 && bn_cmp_dig ( t , 1 ) == RLC_EQ ) { result = RLC_OK <S2SV_ModEnd> ; } bn_mod_2b <S2SV_ModStart> , m , * p_len * 8 ) ; * p_len = k_len - * p_len ; } <S2SV_ModEnd> break ; case <S2SV_ModStart> 8 ) ; result = RLC_OK ; <S2SV_ModStart> ) ; } result = RLC_OK ; <S2SV_ModStart> 8 ) ; pad = ( uint8_t ) t -> dp [ 0 ] ; if ( pad == RSA_PSS ) { int r = 1 ; for ( int i = m_len ; i < 8 * k_len ; i ++ ) { if ( bn_get_bit ( m , i ) != 0 ) { r = 0 <S2SV_ModEnd> ; } } <S2SV_ModStart> } if ( r == 1 && <S2SV_ModEnd> bn_is_zero ( m <S2SV_ModStart> { result = RLC_OK <S2SV_ModEnd> ; } bn_read_bin\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_setup_mask ( VP9_COMMON * const cm , const int mi_row , const int mi_col , <S2SV_StartBug> MODE_INFO * * mi_8x8 , const int mode_info_stride , <S2SV_EndBug> LOOP_FILTER_MASK * lfm ) { int idx_32 , idx_16 , idx_8 ; const loop_filter_info_n * const lfi_n = & cm -> lf_info ; <S2SV_StartBug> MODE_INFO * * mip = mi_8x8 ; <S2SV_EndBug> <S2SV_StartBug> MODE_INFO * * mip2 = mi_8x8 ; <S2SV_EndBug> const int offset_32 [ ] = { 4 , ( mode_info_stride << 2 ) - 4 , 4 , - ( mode_info_stride << 2 ) - 4 } ; const int offset_16 [ ] = { 2 , ( mode_info_stride << 1 ) - 2 , 2 , - ( mode_info_stride << 1 ) - 2 } ; const int offset [ ] = { 1 , mode_info_stride - 1 , 1 , - mode_info_stride - 1 } ; const int shift_32_y [ ] = { 0 , 4 , 32 , 36 } ; const int shift_16_y [ ] = { 0 , 2 , 16 , 18 } ; const int shift_8_y [ ] = { 0 , 1 , 8 , 9 } ; const int shift_32_uv [ ] = { 0 , 2 , 8 , 10 } ; const int shift_16_uv [ ] = { 0 , 1 , 4 , 5 } ; int i ; const int max_rows = ( mi_row + MI_BLOCK_SIZE > cm -> mi_rows ? cm -> mi_rows - mi_row : MI_BLOCK_SIZE ) ; const int max_cols = ( mi_col + MI_BLOCK_SIZE > cm -> mi_cols ? cm -> mi_cols - mi_col : MI_BLOCK_SIZE ) ; <S2SV_StartBug> vp9_zero ( * lfm ) ; <S2SV_EndBug> switch ( mip [ 0 ] -> mbmi . sb_type ) { case BLOCK_64X64 : build_masks ( lfi_n , mip [ 0 ] , 0 , 0 , lfm ) ; break ; case BLOCK_64X32 : build_masks ( lfi_n , mip [ 0 ] , 0 , 0 , lfm ) ; mip2 = mip + mode_info_stride * 4 ; if ( 4 >= max_rows ) break ; build_masks ( lfi_n , mip2 [ 0 ] , 32 , 8 , lfm ) ; break ; case BLOCK_32X64 : build_masks ( lfi_n , mip [ 0 ] , 0 , 0 , lfm ) ; mip2 = mip + 4 ; if ( 4 >= max_cols ) break ; build_masks ( lfi_n , mip2 [ 0 ] , 4 , 2 , lfm ) ; break ; default : for ( idx_32 = 0 ; idx_32 < 4 ; mip += offset_32 [ idx_32 ] , ++ idx_32 ) { const int shift_y = shift_32_y [ idx_32 ] ; const int shift_uv = shift_32_uv [ idx_32 ] ; const int mi_32_col_offset = ( ( idx_32 & 1 ) << 2 ) ; const int mi_32_row_offset = ( ( idx_32 >> 1 ) << 2 ) ; if ( mi_32_col_offset >= max_cols || mi_32_row_offset >= max_rows ) continue ; switch ( mip [ 0 ] -> mbmi . sb_type ) { case BLOCK_32X32 : build_masks ( lfi_n , mip [ 0 ] , shift_y , shift_uv , lfm ) ; break ; case BLOCK_32X16 : build_masks ( lfi_n , mip [ 0 ] , shift_y , shift_uv , lfm ) ; if ( mi_32_row_offset + 2 >= max_rows ) continue ; mip2 = mip + mode_info_stride * 2 ; build_masks ( lfi_n , mip2 [ 0 ] , shift_y + 16 , shift_uv + 4 , lfm ) ; break ; case BLOCK_16X32 : build_masks ( lfi_n , mip [ 0 ] , shift_y , shift_uv , lfm ) ; if ( mi_32_col_offset + 2 >= max_cols ) continue ; mip2 = mip + 2 ; build_masks ( lfi_n , mip2 [ 0 ] , shift_y + 2 , shift_uv + 1 , lfm ) ; break ; default : for ( idx_16 = 0 ; idx_16 < 4 ; mip += offset_16 [ idx_16 ] , ++ idx_16 ) { const int shift_y = shift_32_y [ idx_32 ] + shift_16_y [ idx_16 ] ; const int shift_uv = shift_32_uv [ idx_32 ] + shift_16_uv [ idx_16 ] ; const int mi_16_col_offset = mi_32_col_offset + ( ( idx_16 & 1 ) << 1 ) ; const int mi_16_row_offset = mi_32_row_offset + ( ( idx_16 >> 1 ) << 1 ) ; if ( mi_16_col_offset >= max_cols || mi_16_row_offset >= max_rows ) continue ; switch ( mip [ 0 ] -> mbmi . sb_type ) { case BLOCK_16X16 : build_masks ( lfi_n , mip [ 0 ] , shift_y , shift_uv , lfm ) ; break ; case BLOCK_16X8 : build_masks ( lfi_n , mip [ 0 ] , shift_y , shift_uv , lfm ) ; if ( mi_16_row_offset + 1 >= max_rows ) continue ; mip2 = mip + mode_info_stride ; build_y_mask ( lfi_n , mip2 [ 0 ] , shift_y + 8 , lfm ) ; break ; case BLOCK_8X16 : build_masks ( lfi_n , mip [ 0 ] , shift_y , shift_uv , lfm ) ; if ( mi_16_col_offset + 1 >= max_cols ) continue ; mip2 = mip + 1 ; build_y_mask ( lfi_n , mip2 [ 0 ] , shift_y + 1 , lfm ) ; break ; default : { const int shift_y = shift_32_y [ idx_32 ] + shift_16_y [ idx_16 ] + shift_8_y [ 0 ] ; build_masks ( lfi_n , mip [ 0 ] , shift_y , shift_uv , lfm ) ; mip += offset [ 0 ] ; for ( idx_8 = 1 ; idx_8 < 4 ; mip += offset [ idx_8 ] , ++ idx_8 ) { const int shift_y = shift_32_y [ idx_32 ] + shift_16_y [ idx_16 ] + shift_8_y [ idx_8 ] ; const int mi_8_col_offset = mi_16_col_offset + ( ( idx_8 & 1 ) ) ; const int mi_8_row_offset = mi_16_row_offset + ( ( idx_8 >> 1 ) ) ; if ( mi_8_col_offset >= max_cols || mi_8_row_offset >= max_rows ) continue ; build_y_mask ( lfi_n , mip [ 0 ] , shift_y , lfm ) ; } break ; } } } break ; } } break ; } lfm -> left_y [ TX_16X16 ] |= lfm -> left_y [ TX_32X32 ] ; lfm -> above_y [ TX_16X16 ] |= lfm -> above_y [ TX_32X32 ] ; lfm -> left_uv [ TX_16X16 ] |= lfm -> left_uv [ TX_32X32 ] ; lfm -> above_uv [ TX_16X16 ] |= lfm -> above_uv [ TX_32X32 ] ; lfm -> left_y [ TX_8X8 ] |= lfm -> left_y [ TX_4X4 ] & left_border ; lfm -> left_y [ TX_4X4 ] &= ~ left_border ; lfm -> above_y [ TX_8X8 ] |= lfm -> above_y [ TX_4X4 ] & above_border ; lfm -> above_y [ TX_4X4 ] &= ~ above_border ; lfm -> left_uv [ TX_8X8 ] |= lfm -> left_uv [ TX_4X4 ] & left_border_uv ; lfm -> left_uv [ TX_4X4 ] &= ~ left_border_uv ; lfm -> above_uv [ TX_8X8 ] |= lfm -> above_uv [ TX_4X4 ] & above_border_uv ; lfm -> above_uv [ TX_4X4 ] &= ~ above_border_uv ; if ( mi_row + MI_BLOCK_SIZE > cm -> mi_rows ) { const uint64_t rows = cm -> mi_rows - mi_row ; const uint64_t mask_y = ( ( ( uint64_t ) 1 << ( rows << 3 ) ) - 1 ) ; const uint16_t mask_uv = ( ( ( uint16_t ) 1 << ( ( ( rows + 1 ) >> 1 ) << 2 ) ) - 1 ) ; for ( i = 0 ; i < TX_32X32 ; i ++ ) { lfm -> left_y [ i ] &= mask_y ; lfm -> above_y [ i ] &= mask_y ; lfm -> left_uv [ i ] &= mask_uv ; lfm -> above_uv [ i ] &= mask_uv ; } lfm -> int_4x4_y &= mask_y ; lfm -> int_4x4_uv &= mask_uv ; if ( rows == 1 ) { lfm -> above_uv [ TX_8X8 ] |= lfm -> above_uv [ TX_16X16 ] ; lfm -> above_uv [ TX_16X16 ] = 0 ; } if ( rows == 5 ) { lfm -> above_uv [ TX_8X8 ] |= lfm -> above_uv [ TX_16X16 ] & 0xff00 ; lfm -> above_uv [ TX_16X16 ] &= ~ ( lfm -> above_uv [ TX_16X16 ] & 0xff00 ) ; } } if ( mi_col + MI_BLOCK_SIZE > cm -> mi_cols ) { const uint64_t columns = cm -> mi_cols - mi_col ; <S2SV_StartBug> const uint64_t mask_y = ( ( ( 1 << columns ) - 1 ) ) * 0x0101010101010101 ; <S2SV_EndBug> const uint16_t mask_uv = ( ( 1 << ( ( columns + 1 ) >> 1 ) ) - 1 ) * 0x1111 ; const uint16_t mask_uv_int = ( ( 1 << ( columns >> 1 ) ) - 1 ) * 0x1111 ; for ( i = 0 ; i < TX_32X32 ; i ++ ) { lfm -> left_y [ i ] &= mask_y ; lfm -> above_y [ i ] &= mask_y ; lfm -> left_uv [ i ] &= mask_uv ; lfm -> above_uv [ i ] &= mask_uv ; } lfm -> int_4x4_y &= mask_y ; lfm -> int_4x4_uv &= mask_uv_int ; if ( columns == 1 ) { lfm -> left_uv [ TX_8X8 ] |= lfm -> left_uv [ TX_16X16 ] ; lfm -> left_uv [ TX_16X16 ] = 0 ; } if ( columns == 5 ) { lfm -> left_uv [ TX_8X8 ] |= ( lfm -> left_uv [ TX_16X16 ] & 0xcccc ) ; lfm -> left_uv [ TX_16X16 ] &= ~ ( lfm -> left_uv [ TX_16X16 ] & 0xcccc ) ; } } if ( mi_col == 0 ) { for ( i = 0 ; i < TX_32X32 ; i ++ ) { <S2SV_StartBug> lfm -> left_y [ i ] &= 0xfefefefefefefefe ; <S2SV_EndBug> lfm -> left_uv [ i ] &= 0xeeee ; } } assert ( ! ( lfm -> left_y [ TX_16X16 ] & lfm -> left_y [ TX_8X8 ] ) ) ; assert ( ! ( lfm -> left_y [ TX_16X16 ] & lfm -> left_y [ TX_4X4 ] ) ) ; assert ( ! ( lfm -> left_y [ TX_8X8 ] & lfm -> left_y [ TX_4X4 ] ) ) ; assert ( ! ( lfm -> int_4x4_y & lfm -> left_y [ TX_16X16 ] ) ) ; assert ( ! ( lfm -> left_uv [ TX_16X16 ] & lfm -> left_uv [ TX_8X8 ] ) ) ; assert ( ! ( lfm -> left_uv [ TX_16X16 ] & lfm -> left_uv [ TX_4X4 ] ) ) ; assert ( ! ( lfm -> left_uv [ TX_8X8 ] & lfm -> left_uv [ TX_4X4 ] ) ) ; assert ( ! ( lfm -> int_4x4_uv & lfm -> left_uv [ TX_16X16 ] ) ) ; assert ( ! ( lfm -> above_y [ TX_16X16 ] & lfm -> above_y [ TX_8X8 ] ) ) ; assert ( ! ( lfm -> above_y [ TX_16X16 ] & lfm -> above_y [ TX_4X4 ] ) ) ; assert ( ! ( lfm -> above_y [ TX_8X8 ] & lfm -> above_y [ TX_4X4 ] ) ) ; assert ( ! ( lfm -> int_4x4_y & lfm -> above_y [ TX_16X16 ] ) ) ; assert ( ! ( lfm -> above_uv [ TX_16X16 ] & lfm -> above_uv [ TX_8X8 ] ) ) ; assert ( ! ( lfm -> above_uv [ TX_16X16 ] & lfm -> above_uv [ TX_4X4 ] ) ) ; assert ( ! ( lfm -> above_uv [ TX_8X8 ] & lfm -> above_uv [ TX_4X4 ] ) ) ; assert ( ! ( lfm -> int_4x4_uv & lfm -> above_uv [ TX_16X16 ] ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MODE_INFO * * mi <S2SV_ModEnd> , const int <S2SV_ModStart> * mip = mi <S2SV_ModEnd> ; MODE_INFO * <S2SV_ModStart> * mip2 = mi <S2SV_ModEnd> ; const int <S2SV_ModStart> ( * lfm ) ; assert ( mip [ 0 ] != NULL <S2SV_ModStart> ) ) * 0x0101010101010101ULL <S2SV_ModEnd> ; const uint16_t <S2SV_ModStart> i ] &= 0xfefefefefefefefeULL <S2SV_ModEnd> ; lfm ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12278\n\n```\nCWE-20 void test_path_dotgit__dotgit_modules_symlink ( void ) { cl_assert_equal_b ( true , git_path_isvalid ( NULL , \".gitmodules\" , 0 , GIT_PATH_REJECT_DOT_GIT_HFS | GIT_PATH_REJECT_DOT_GIT_NTFS ) ) ; cl_assert_equal_b ( false , git_path_isvalid ( NULL , \".gitmodules\" , S_IFLNK , GIT_PATH_REJECT_DOT_GIT_HFS ) ) ; cl_assert_equal_b ( false , git_path_isvalid ( NULL , \".gitmodules\" , S_IFLNK , GIT_PATH_REJECT_DOT_GIT_NTFS ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; cl_assert_equal_b ( false , git_path_isvalid ( NULL , \".gitmodules<S2SV_blank>.<S2SV_blank>.::$DATA\" , S_IFLNK , GIT_PATH_REJECT_DOT_GIT_NTFS ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0178\n\n```\nCWE-20 void addReply ( redisClient * c , robj * obj ) { if ( _installWriteEvent ( c ) != REDIS_OK ) return ; <S2SV_StartBug> redisAssert ( ! server . vm_enabled || obj -> storage == REDIS_VM_MEMORY ) ; <S2SV_EndBug> if ( obj -> encoding == REDIS_ENCODING_RAW ) { if ( _addReplyToBuffer ( c , obj -> ptr , sdslen ( obj -> ptr ) ) != REDIS_OK ) _addReplyObjectToList ( c , obj ) ; } else { obj = getDecodedObject ( obj ) ; if ( _addReplyToBuffer ( c , obj -> ptr , sdslen ( obj -> ptr ) ) != REDIS_OK ) _addReplyObjectToList ( c , obj ) ; decrRefCount ( obj ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! server . ds_enabled <S2SV_ModEnd> || obj ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-444(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20372\n\n```\nCWE-444 static ngx_int_t ngx_http_send_error_page ( ngx_http_request_t * r , ngx_http_err_page_t * err_page ) { ngx_int_t overwrite ; ngx_str_t uri , args ; ngx_table_elt_t * location ; ngx_http_core_loc_conf_t * clcf ; overwrite = err_page -> overwrite ; if ( overwrite && overwrite != NGX_HTTP_OK ) { r -> expect_tested = 1 ; } if ( overwrite >= 0 ) { r -> err_status = overwrite ; } if ( ngx_http_complex_value ( r , & err_page -> value , & uri ) != NGX_OK ) { return NGX_ERROR ; } if ( uri . len && uri . data [ 0 ] == '/' ) { if ( err_page -> value . lengths ) { ngx_http_split_args ( r , & uri , & args ) ; } else { args = err_page -> args ; } if ( r -> method != NGX_HTTP_HEAD ) { r -> method = NGX_HTTP_GET ; r -> method_name = ngx_http_core_get_method ; } return ngx_http_internal_redirect ( r , & uri , & args ) ; } if ( uri . len && uri . data [ 0 ] == '@' ) { return ngx_http_named_location ( r , & uri ) ; } <S2SV_StartBug> location = ngx_list_push ( & r -> headers_out . headers ) ; <S2SV_EndBug> if ( location == NULL ) { return NGX_ERROR ; } if ( overwrite != NGX_HTTP_MOVED_PERMANENTLY && overwrite != NGX_HTTP_MOVED_TEMPORARILY && overwrite != NGX_HTTP_SEE_OTHER && overwrite != NGX_HTTP_TEMPORARY_REDIRECT && overwrite != NGX_HTTP_PERMANENT_REDIRECT ) { r -> err_status = NGX_HTTP_MOVED_TEMPORARILY ; } location -> hash = 1 ; ngx_str_set ( & location -> key , \"Location\" ) ; location -> value = uri ; ngx_http_clear_location ( r ) ; r -> headers_out . location = location ; clcf = ngx_http_get_module_loc_conf ( r , ngx_http_core_module ) ; if ( clcf -> msie_refresh && r -> headers_in . msie ) { return ngx_http_send_refresh ( r ) ; } return ngx_http_send_special_response ( r , clcf , r -> err_status - NGX_HTTP_MOVED_PERMANENTLY + NGX_HTTP_OFF_3XX ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } r -> expect_tested = 1 ; if ( ngx_http_discard_request_body ( r ) != NGX_OK ) { r -> keepalive = 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_inc_frame_in_layer ( SVC * svc ) { <S2SV_EndBug> <S2SV_StartBug> LAYER_CONTEXT * const lc = ( svc -> number_temporal_layers > 1 ) <S2SV_EndBug> ? & svc -> layer_context [ svc -> temporal_layer_id ] : & svc -> layer_context [ svc -> spatial_layer_id ] ; ++ lc -> current_video_frame_in_layer ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_inc_frame_in_layer ( VP9_COMP * const cpi <S2SV_ModEnd> ) { LAYER_CONTEXT <S2SV_ModStart> const lc = & cpi -> svc . layer_context [ cpi -> svc . spatial_layer_id * cpi -> svc . number_temporal_layers <S2SV_ModEnd> ] ; ++ <S2SV_ModStart> -> current_video_frame_in_layer ; ++ lc -> frames_from_key_frame ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static bool check_underflow ( const struct ip6t_entry * e ) { const struct xt_entry_target * t ; unsigned int verdict ; <S2SV_StartBug> if ( ! unconditional ( & e -> ipv6 ) ) <S2SV_EndBug> return false ; t = ip6t_get_target_c ( e ) ; if ( strcmp ( t -> u . user . name , XT_STANDARD_TARGET ) != 0 ) return false ; verdict = ( ( struct xt_standard_target * ) t ) -> verdict ; verdict = - verdict - 1 ; return verdict == NF_DROP || verdict == NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! unconditional ( e <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 void dump_global_data ( FILE * fp , data_t * data ) { # ifdef _WITH_VRRP_ char buf [ 64 ] ; # endif if ( ! data ) return ; conf_write ( fp , \"------<<S2SV_blank>Global<S2SV_blank>definitions<S2SV_blank>>------\" ) ; # if HAVE_DECL_CLONE_NEWNET conf_write ( fp , \"<S2SV_blank>Network<S2SV_blank>namespace<S2SV_blank>=<S2SV_blank>%s\" , data -> network_namespace ? data -> network_namespace : \"(default)\" ) ; # endif if ( data -> instance_name ) conf_write ( fp , \"<S2SV_blank>Instance<S2SV_blank>name<S2SV_blank>=<S2SV_blank>%s\" , data -> instance_name ) ; if ( data -> router_id ) conf_write ( fp , \"<S2SV_blank>Router<S2SV_blank>ID<S2SV_blank>=<S2SV_blank>%s\" , data -> router_id ) ; if ( data -> smtp_server . ss_family ) { conf_write ( fp , \"<S2SV_blank>Smtp<S2SV_blank>server<S2SV_blank>=<S2SV_blank>%s\" , inet_sockaddrtos ( & data -> smtp_server ) ) ; conf_write ( fp , \"<S2SV_blank>Smtp<S2SV_blank>server<S2SV_blank>port<S2SV_blank>=<S2SV_blank>%u\" , ntohs ( inet_sockaddrport ( & data -> smtp_server ) ) ) ; } if ( data -> smtp_helo_name ) conf_write ( fp , \"<S2SV_blank>Smtp<S2SV_blank>HELO<S2SV_blank>name<S2SV_blank>=<S2SV_blank>%s\" , data -> smtp_helo_name ) ; if ( data -> smtp_connection_to ) conf_write ( fp , \"<S2SV_blank>Smtp<S2SV_blank>server<S2SV_blank>connection<S2SV_blank>timeout<S2SV_blank>=<S2SV_blank>%lu\" , data -> smtp_connection_to / TIMER_HZ ) ; if ( data -> email_from ) { conf_write ( fp , \"<S2SV_blank>Email<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>=<S2SV_blank>%s\" , data -> email_from ) ; dump_list ( fp , data -> email ) ; } conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>smtp_alert<S2SV_blank>=<S2SV_blank>%s\" , data -> smtp_alert == - 1 ? \"unset\" : data -> smtp_alert ? \"on\" : \"off\" ) ; # ifdef _WITH_VRRP_ conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>smtp_alert_vrrp<S2SV_blank>=<S2SV_blank>%s\" , data -> smtp_alert_vrrp == - 1 ? \"unset\" : data -> smtp_alert_vrrp ? \"on\" : \"off\" ) ; # endif # ifdef _WITH_LVS_ conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>smtp_alert_checker<S2SV_blank>=<S2SV_blank>%s\" , data -> smtp_alert_checker == - 1 ? \"unset\" : data -> smtp_alert_checker ? \"on\" : \"off\" ) ; # endif # ifdef _WITH_VRRP_ conf_write ( fp , \"<S2SV_blank>Dynamic<S2SV_blank>interfaces<S2SV_blank>=<S2SV_blank>%s\" , data -> dynamic_interfaces ? \"true\" : \"false\" ) ; if ( data -> dynamic_interfaces ) conf_write ( fp , \"<S2SV_blank>Allow<S2SV_blank>interface<S2SV_blank>changes<S2SV_blank>=<S2SV_blank>%s\" , data -> allow_if_changes ? \"true\" : \"false\" ) ; if ( data -> no_email_faults ) conf_write ( fp , \"<S2SV_blank>Send<S2SV_blank>emails<S2SV_blank>for<S2SV_blank>fault<S2SV_blank>transitions<S2SV_blank>=<S2SV_blank>off\" ) ; # endif # ifdef _WITH_LVS_ if ( data -> lvs_tcp_timeout ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>TCP<S2SV_blank>timeout<S2SV_blank>=<S2SV_blank>%d\" , data -> lvs_tcp_timeout ) ; if ( data -> lvs_tcpfin_timeout ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>TCP<S2SV_blank>FIN<S2SV_blank>timeout<S2SV_blank>=<S2SV_blank>%d\" , data -> lvs_tcpfin_timeout ) ; if ( data -> lvs_udp_timeout ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>TCP<S2SV_blank>timeout<S2SV_blank>=<S2SV_blank>%d\" , data -> lvs_udp_timeout ) ; # ifdef _WITH_VRRP_ # ifndef _DEBUG_ if ( prog_type == PROG_TYPE_VRRP ) # endif conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>interface<S2SV_blank>=<S2SV_blank>%s\" , data -> default_ifp ? data -> default_ifp -> ifname : DFLT_INT ) ; if ( data -> lvs_syncd . vrrp ) { conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>vrrp<S2SV_blank>instance<S2SV_blank>=<S2SV_blank>%s\" , data -> lvs_syncd . vrrp -> iname ) ; if ( data -> lvs_syncd . ifname ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>interface<S2SV_blank>=<S2SV_blank>%s\" , data -> lvs_syncd . ifname ) ; conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>syncid<S2SV_blank>=<S2SV_blank>%u\" , data -> lvs_syncd . syncid ) ; # ifdef _HAVE_IPVS_SYNCD_ATTRIBUTES_ if ( data -> lvs_syncd . sync_maxlen ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>maxlen<S2SV_blank>=<S2SV_blank>%u\" , data -> lvs_syncd . sync_maxlen ) ; if ( data -> lvs_syncd . mcast_group . ss_family != AF_UNSPEC ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>mcast<S2SV_blank>group<S2SV_blank>%s\" , inet_sockaddrtos ( & data -> lvs_syncd . mcast_group ) ) ; if ( data -> lvs_syncd . mcast_port ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>mcast<S2SV_blank>port<S2SV_blank>=<S2SV_blank>%d\" , data -> lvs_syncd . mcast_port ) ; if ( data -> lvs_syncd . mcast_ttl ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>mcast<S2SV_blank>ttl<S2SV_blank>=<S2SV_blank>%u\" , data -> lvs_syncd . mcast_ttl ) ; # endif } # endif conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>flush<S2SV_blank>=<S2SV_blank>%s\" , data -> lvs_flush ? \"true\" : \"false\" ) ; # endif if ( data -> notify_fifo . name ) { conf_write ( fp , \"<S2SV_blank>Global<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>=<S2SV_blank>%s\" , data -> notify_fifo . name ) ; if ( data -> notify_fifo . script ) conf_write ( fp , \"<S2SV_blank>Global<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>script<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>uid:gid<S2SV_blank>%d:%d\" , cmd_str ( data -> notify_fifo . script ) , data -> notify_fifo . script -> uid , data -> notify_fifo . script -> gid ) ; } # ifdef _WITH_VRRP_ if ( data -> vrrp_notify_fifo . name ) { conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_notify_fifo . name ) ; if ( data -> vrrp_notify_fifo . script ) conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>script<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>uid:gid<S2SV_blank>%d:%d\" , cmd_str ( data -> vrrp_notify_fifo . script ) , data -> vrrp_notify_fifo . script -> uid , data -> vrrp_notify_fifo . script -> gid ) ; } # endif # ifdef _WITH_LVS_ if ( data -> lvs_notify_fifo . name ) { conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>=<S2SV_blank>%s\" , data -> lvs_notify_fifo . name ) ; if ( data -> lvs_notify_fifo . script ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>script<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>uid:gid<S2SV_blank>%d:%d\" , cmd_str ( data -> lvs_notify_fifo . script ) , data -> lvs_notify_fifo . script -> uid , data -> lvs_notify_fifo . script -> gid ) ; } # endif # ifdef _WITH_VRRP_ if ( data -> vrrp_mcast_group4 . sin_family ) { conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>IPv4<S2SV_blank>mcast<S2SV_blank>group<S2SV_blank>=<S2SV_blank>%s\" , inet_sockaddrtos ( ( struct sockaddr_storage * ) & data -> vrrp_mcast_group4 ) ) ; } if ( data -> vrrp_mcast_group6 . sin6_family ) { conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>IPv6<S2SV_blank>mcast<S2SV_blank>group<S2SV_blank>=<S2SV_blank>%s\" , inet_sockaddrtos ( ( struct sockaddr_storage * ) & data -> vrrp_mcast_group6 ) ) ; } conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>delay<S2SV_blank>=<S2SV_blank>%u\" , data -> vrrp_garp_delay / TIMER_HZ ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>repeat<S2SV_blank>=<S2SV_blank>%u\" , data -> vrrp_garp_rep ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>refresh<S2SV_blank>timer<S2SV_blank>=<S2SV_blank>%lu\" , data -> vrrp_garp_refresh . tv_sec ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>refresh<S2SV_blank>repeat<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_garp_refresh_rep ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>lower<S2SV_blank>priority<S2SV_blank>delay<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_garp_lower_prio_delay == PARAMETER_UNSET ? PARAMETER_UNSET : data -> vrrp_garp_lower_prio_delay / TIMER_HZ ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>lower<S2SV_blank>priority<S2SV_blank>repeat<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_garp_lower_prio_rep ) ; conf_write ( fp , \"<S2SV_blank>Send<S2SV_blank>advert<S2SV_blank>after<S2SV_blank>receive<S2SV_blank>lower<S2SV_blank>priority<S2SV_blank>advert<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_lower_prio_no_advert ? \"false\" : \"true\" ) ; conf_write ( fp , \"<S2SV_blank>Send<S2SV_blank>advert<S2SV_blank>after<S2SV_blank>receive<S2SV_blank>higher<S2SV_blank>priority<S2SV_blank>advert<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_higher_prio_send_advert ? \"true\" : \"false\" ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>interval<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_garp_interval ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>NA<S2SV_blank>interval<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_gna_interval ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>default<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_version ) ; if ( data -> vrrp_iptables_inchain [ 0 ] ) conf_write ( fp , \"<S2SV_blank>Iptables<S2SV_blank>input<S2SV_blank>chain<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_iptables_inchain ) ; if ( data -> vrrp_iptables_outchain [ 0 ] ) conf_write ( fp , \"<S2SV_blank>Iptables<S2SV_blank>output<S2SV_blank>chain<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_iptables_outchain ) ; # ifdef _HAVE_LIBIPSET_ conf_write ( fp , \"<S2SV_blank>Using<S2SV_blank>ipsets<S2SV_blank>=<S2SV_blank>%s\" , data -> using_ipsets ? \"true\" : \"false\" ) ; if ( data -> vrrp_ipset_address [ 0 ] ) conf_write ( fp , \"<S2SV_blank>ipset<S2SV_blank>IPv4<S2SV_blank>address<S2SV_blank>set<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_ipset_address ) ; if ( data -> vrrp_ipset_address6 [ 0 ] ) conf_write ( fp , \"<S2SV_blank>ipset<S2SV_blank>IPv6<S2SV_blank>address<S2SV_blank>set<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_ipset_address6 ) ; if ( data -> vrrp_ipset_address_iface6 [ 0 ] ) conf_write ( fp , \"<S2SV_blank>ipset<S2SV_blank>IPv6<S2SV_blank>address,iface<S2SV_blank>set<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_ipset_address_iface6 ) ; # endif conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>check<S2SV_blank>unicast_src<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_check_unicast_src ? \"true\" : \"false\" ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>skip<S2SV_blank>check<S2SV_blank>advert<S2SV_blank>addresses<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_skip_check_adv_addr ? \"true\" : \"false\" ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>strict<S2SV_blank>mode<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_strict ? \"true\" : \"false\" ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>process<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_process_priority ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>don\\'t<S2SV_blank>swap<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_no_swap ? \"true\" : \"false\" ) ; # ifdef _HAVE_SCHED_RT_ conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>realtime<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%u\" , data -> vrrp_realtime_priority ) ; # if HAVE_DECL_RLIMIT_RTTIME conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>realtime<S2SV_blank>limit<S2SV_blank>=<S2SV_blank>%lu\" , data -> vrrp_rlimit_rt ) ; # endif # endif # endif # ifdef _WITH_LVS_ conf_write ( fp , \"<S2SV_blank>Checker<S2SV_blank>process<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%d\" , data -> checker_process_priority ) ; conf_write ( fp , \"<S2SV_blank>Checker<S2SV_blank>don\\'t<S2SV_blank>swap<S2SV_blank>=<S2SV_blank>%s\" , data -> checker_no_swap ? \"true\" : \"false\" ) ; # ifdef _HAVE_SCHED_RT_ conf_write ( fp , \"<S2SV_blank>Checker<S2SV_blank>realtime<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%u\" , data -> checker_realtime_priority ) ; # if HAVE_DECL_RLIMIT_RTTIME conf_write ( fp , \"<S2SV_blank>Checker<S2SV_blank>realtime<S2SV_blank>limit<S2SV_blank>=<S2SV_blank>%lu\" , data -> checker_rlimit_rt ) ; # endif # endif # endif # ifdef _WITH_BFD_ conf_write ( fp , \"<S2SV_blank>BFD<S2SV_blank>process<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%d\" , data -> bfd_process_priority ) ; conf_write ( fp , \"<S2SV_blank>BFD<S2SV_blank>don\\'t<S2SV_blank>swap<S2SV_blank>=<S2SV_blank>%s\" , data -> bfd_no_swap ? \"true\" : \"false\" ) ; # ifdef _HAVE_SCHED_RT_ conf_write ( fp , \"<S2SV_blank>BFD<S2SV_blank>realtime<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%u\" , data -> bfd_realtime_priority ) ; # if HAVE_DECL_RLIMIT_RTTIME conf_write ( fp , \"<S2SV_blank>BFD<S2SV_blank>realtime<S2SV_blank>limit<S2SV_blank>=<S2SV_blank>%lu\" , data -> bfd_rlimit_rt ) ; # endif # endif # endif # ifdef _WITH_SNMP_VRRP_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>vrrp<S2SV_blank>%s\" , data -> enable_snmp_vrrp ? \"enabled\" : \"disabled\" ) ; # endif # ifdef _WITH_SNMP_CHECKER_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>checker<S2SV_blank>%s\" , data -> enable_snmp_checker ? \"enabled\" : \"disabled\" ) ; # endif # ifdef _WITH_SNMP_RFCV2_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>RFCv2<S2SV_blank>%s\" , data -> enable_snmp_rfcv2 ? \"enabled\" : \"disabled\" ) ; # endif # ifdef _WITH_SNMP_RFCV3_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>RFCv3<S2SV_blank>%s\" , data -> enable_snmp_rfcv3 ? \"enabled\" : \"disabled\" ) ; # endif # ifdef _WITH_SNMP_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>traps<S2SV_blank>%s\" , data -> enable_traps ? \"enabled\" : \"disabled\" ) ; conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>socket<S2SV_blank>=<S2SV_blank>%s\" , data -> snmp_socket ? data -> snmp_socket : \"default<S2SV_blank>(unix:/var/agentx/master)\" ) ; # endif # ifdef _WITH_DBUS_ conf_write ( fp , \"<S2SV_blank>DBus<S2SV_blank>%s\" , data -> enable_dbus ? \"enabled\" : \"disabled\" ) ; conf_write ( fp , \"<S2SV_blank>DBus<S2SV_blank>service<S2SV_blank>name<S2SV_blank>=<S2SV_blank>%s\" , data -> dbus_service_name ? data -> dbus_service_name : \"\" ) ; # endif conf_write ( fp , \"<S2SV_blank>Script<S2SV_blank>security<S2SV_blank>%s\" , script_security ? \"enabled\" : \"disabled\" ) ; conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>script<S2SV_blank>uid:gid<S2SV_blank>%d:%d\" , default_script_uid , default_script_gid ) ; # ifdef _WITH_VRRP_ conf_write ( fp , \"<S2SV_blank>vrrp_netlink_cmd_rcv_bufs<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_netlink_cmd_rcv_bufs ) ; conf_write ( fp , \"<S2SV_blank>vrrp_netlink_cmd_rcv_bufs_force<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_netlink_cmd_rcv_bufs_force ) ; conf_write ( fp , \"<S2SV_blank>vrrp_netlink_monitor_rcv_bufs<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_netlink_monitor_rcv_bufs ) ; conf_write ( fp , \"<S2SV_blank>vrrp_netlink_monitor_rcv_bufs_force<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_netlink_monitor_rcv_bufs_force ) ; # endif # ifdef _WITH_LVS_ conf_write ( fp , \"<S2SV_blank>lvs_netlink_cmd_rcv_bufs<S2SV_blank>=<S2SV_blank>%u\" , global_data -> lvs_netlink_cmd_rcv_bufs ) ; conf_write ( fp , \"<S2SV_blank>lvs_netlink_cmd_rcv_bufs_force<S2SV_blank>=<S2SV_blank>%u\" , global_data -> lvs_netlink_cmd_rcv_bufs_force ) ; conf_write ( fp , \"<S2SV_blank>lvs_netlink_monitor_rcv_bufs<S2SV_blank>=<S2SV_blank>%u\" , global_data -> lvs_netlink_monitor_rcv_bufs ) ; conf_write ( fp , \"<S2SV_blank>lvs_netlink_monitor_rcv_bufs_force<S2SV_blank>=<S2SV_blank>%u\" , global_data -> lvs_netlink_monitor_rcv_bufs_force ) ; conf_write ( fp , \"<S2SV_blank>rs_init_notifies<S2SV_blank>=<S2SV_blank>%u\" , global_data -> rs_init_notifies ) ; conf_write ( fp , \"<S2SV_blank>no_checker_emails<S2SV_blank>=<S2SV_blank>%u\" , global_data -> no_checker_emails ) ; # endif # ifdef _WITH_VRRP_ buf [ 0 ] = '\\\\0' ; if ( global_data -> vrrp_rx_bufs_policy & RX_BUFS_POLICY_MTU ) strcpy ( buf , \"<S2SV_blank>rx_bufs_policy<S2SV_blank>=<S2SV_blank>MTU\" ) ; else if ( global_data -> vrrp_rx_bufs_policy & RX_BUFS_POLICY_ADVERT ) strcpy ( buf , \"<S2SV_blank>rx_bufs_policy<S2SV_blank>=<S2SV_blank>ADVERT\" ) ; else if ( global_data -> vrrp_rx_bufs_policy & RX_BUFS_SIZE ) sprintf ( buf , \"<S2SV_blank>rx_bufs_size<S2SV_blank>=<S2SV_blank>%lu\" , global_data -> vrrp_rx_bufs_size ) ; if ( buf [ 0 ] ) conf_write ( fp , \"%s\" , buf ) ; conf_write ( fp , \"<S2SV_blank>rx_bufs_multiples<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_rx_bufs_multiples ) ; <S2SV_StartBug> # endif <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vrrp_rx_bufs_multiples ) ; conf_write ( fp , \"<S2SV_blank>umask<S2SV_blank>=<S2SV_blank>0%o\" , global_data -> umask ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2699\n\n```\nCWE-000 int ip6_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int transhdrlen , int hlimit , int tclass , struct ipv6_txoptions * opt , struct flowi6 * fl6 , struct rt6_info * rt , unsigned int flags , int dontfrag ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_cork * cork ; struct sk_buff * skb ; unsigned int maxfraglen , fragheaderlen ; int exthdrlen ; int hh_len ; int mtu ; int copy ; int err ; int offset = 0 ; int csummode = CHECKSUM_NONE ; __u8 tx_flags = 0 ; if ( flags & MSG_PROBE ) return 0 ; cork = & inet -> cork . base ; if ( skb_queue_empty ( & sk -> sk_write_queue ) ) { if ( opt ) { if ( WARN_ON ( np -> cork . opt ) ) return - EINVAL ; np -> cork . opt = kmalloc ( opt -> tot_len , sk -> sk_allocation ) ; if ( unlikely ( np -> cork . opt == NULL ) ) return - ENOBUFS ; np -> cork . opt -> tot_len = opt -> tot_len ; np -> cork . opt -> opt_flen = opt -> opt_flen ; np -> cork . opt -> opt_nflen = opt -> opt_nflen ; np -> cork . opt -> dst0opt = ip6_opt_dup ( opt -> dst0opt , sk -> sk_allocation ) ; if ( opt -> dst0opt && ! np -> cork . opt -> dst0opt ) return - ENOBUFS ; np -> cork . opt -> dst1opt = ip6_opt_dup ( opt -> dst1opt , sk -> sk_allocation ) ; if ( opt -> dst1opt && ! np -> cork . opt -> dst1opt ) return - ENOBUFS ; np -> cork . opt -> hopopt = ip6_opt_dup ( opt -> hopopt , sk -> sk_allocation ) ; if ( opt -> hopopt && ! np -> cork . opt -> hopopt ) return - ENOBUFS ; np -> cork . opt -> srcrt = ip6_rthdr_dup ( opt -> srcrt , sk -> sk_allocation ) ; if ( opt -> srcrt && ! np -> cork . opt -> srcrt ) return - ENOBUFS ; } dst_hold ( & rt -> dst ) ; cork -> dst = & rt -> dst ; inet -> cork . fl . u . ip6 = * fl6 ; np -> cork . hop_limit = hlimit ; np -> cork . tclass = tclass ; mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( rt -> dst . path ) ; if ( np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } cork -> fragsize = mtu ; if ( dst_allfrag ( rt -> dst . path ) ) cork -> flags |= IPCORK_ALLFRAG ; cork -> length = 0 ; sk -> sk_sndmsg_page = NULL ; sk -> sk_sndmsg_off = 0 ; exthdrlen = rt -> dst . header_len + ( opt ? opt -> opt_flen : 0 ) - rt -> rt6i_nfheader_len ; length += exthdrlen ; transhdrlen += exthdrlen ; } else { rt = ( struct rt6_info * ) cork -> dst ; fl6 = & inet -> cork . fl . u . ip6 ; opt = np -> cork . opt ; transhdrlen = 0 ; exthdrlen = 0 ; mtu = cork -> fragsize ; } hh_len = LL_RESERVED_SPACE ( rt -> dst . dev ) ; fragheaderlen = sizeof ( struct ipv6hdr ) + rt -> rt6i_nfheader_len + ( opt ? opt -> opt_nflen : 0 ) ; maxfraglen = ( ( mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; if ( mtu <= sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN ) { if ( cork -> length + length > sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN - fragheaderlen ) { ipv6_local_error ( sk , EMSGSIZE , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } } if ( sk -> sk_type == SOCK_DGRAM ) { err = sock_tx_timestamp ( sk , & tx_flags ) ; if ( err ) goto error ; } cork -> length += length ; if ( length > mtu ) { int proto = sk -> sk_protocol ; if ( dontfrag && ( proto == IPPROTO_UDP || proto == IPPROTO_RAW ) ) { ipv6_local_rxpmtu ( sk , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } if ( proto == IPPROTO_UDP && ( rt -> dst . dev -> features & NETIF_F_UFO ) ) { err = ip6_ufo_append_data ( sk , getfrag , from , length , hh_len , fragheaderlen , <S2SV_StartBug> transhdrlen , mtu , flags ) ; <S2SV_EndBug> if ( err ) goto error ; return 0 ; } } if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) goto alloc_new_skb ; while ( length > 0 ) { copy = ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - skb -> len ; if ( copy < length ) copy = maxfraglen - skb -> len ; if ( copy <= 0 ) { char * data ; unsigned int datalen ; unsigned int fraglen ; unsigned int fraggap ; unsigned int alloclen ; struct sk_buff * skb_prev ; alloc_new_skb : skb_prev = skb ; if ( skb_prev ) fraggap = skb_prev -> len - maxfraglen ; else fraggap = 0 ; datalen = length + fraggap ; if ( datalen > ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - fragheaderlen ) datalen = maxfraglen - fragheaderlen ; fraglen = datalen + fragheaderlen ; if ( ( flags & MSG_MORE ) && ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) alloclen = mtu ; else alloclen = datalen + fragheaderlen ; if ( datalen == length + fraggap ) alloclen += rt -> dst . trailer_len ; alloclen += sizeof ( struct frag_hdr ) ; if ( transhdrlen ) { skb = sock_alloc_send_skb ( sk , alloclen + hh_len , ( flags & MSG_DONTWAIT ) , & err ) ; } else { skb = NULL ; if ( atomic_read ( & sk -> sk_wmem_alloc ) <= 2 * sk -> sk_sndbuf ) skb = sock_wmalloc ( sk , alloclen + hh_len , 1 , sk -> sk_allocation ) ; if ( unlikely ( skb == NULL ) ) err = - ENOBUFS ; else { tx_flags = 0 ; } } if ( skb == NULL ) goto error ; skb -> ip_summed = csummode ; skb -> csum = 0 ; skb_reserve ( skb , hh_len + sizeof ( struct frag_hdr ) ) ; if ( sk -> sk_type == SOCK_DGRAM ) skb_shinfo ( skb ) -> tx_flags = tx_flags ; data = skb_put ( skb , fraglen ) ; skb_set_network_header ( skb , exthdrlen ) ; data += fragheaderlen ; skb -> transport_header = ( skb -> network_header + fragheaderlen ) ; if ( fraggap ) { skb -> csum = skb_copy_and_csum_bits ( skb_prev , maxfraglen , data + transhdrlen , fraggap , 0 ) ; skb_prev -> csum = csum_sub ( skb_prev -> csum , skb -> csum ) ; data += fraggap ; pskb_trim_unique ( skb_prev , maxfraglen ) ; } copy = datalen - transhdrlen - fraggap ; if ( copy < 0 ) { err = - EINVAL ; kfree_skb ( skb ) ; goto error ; } else if ( copy > 0 && getfrag ( from , data + transhdrlen , offset , copy , fraggap , skb ) < 0 ) { err = - EFAULT ; kfree_skb ( skb ) ; goto error ; } offset += copy ; length -= datalen - fraggap ; transhdrlen = 0 ; exthdrlen = 0 ; csummode = CHECKSUM_NONE ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; continue ; } if ( copy > length ) copy = length ; if ( ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) { unsigned int off ; off = skb -> len ; if ( getfrag ( from , skb_put ( skb , copy ) , offset , copy , off , skb ) < 0 ) { __skb_trim ( skb , off ) ; err = - EFAULT ; goto error ; } } else { int i = skb_shinfo ( skb ) -> nr_frags ; skb_frag_t * frag = & skb_shinfo ( skb ) -> frags [ i - 1 ] ; struct page * page = sk -> sk_sndmsg_page ; int off = sk -> sk_sndmsg_off ; unsigned int left ; if ( page && ( left = PAGE_SIZE - off ) > 0 ) { if ( copy >= left ) copy = left ; if ( page != frag -> page ) { if ( i == MAX_SKB_FRAGS ) { err = - EMSGSIZE ; goto error ; } get_page ( page ) ; skb_fill_page_desc ( skb , i , page , sk -> sk_sndmsg_off , 0 ) ; frag = & skb_shinfo ( skb ) -> frags [ i ] ; } } else if ( i < MAX_SKB_FRAGS ) { if ( copy > PAGE_SIZE ) copy = PAGE_SIZE ; page = alloc_pages ( sk -> sk_allocation , 0 ) ; if ( page == NULL ) { err = - ENOMEM ; goto error ; } sk -> sk_sndmsg_page = page ; sk -> sk_sndmsg_off = 0 ; skb_fill_page_desc ( skb , i , page , 0 , 0 ) ; frag = & skb_shinfo ( skb ) -> frags [ i ] ; } else { err = - EMSGSIZE ; goto error ; } if ( getfrag ( from , page_address ( frag -> page ) + frag -> page_offset + frag -> size , offset , copy , skb -> len , skb ) < 0 ) { err = - EFAULT ; goto error ; } sk -> sk_sndmsg_off += copy ; frag -> size += copy ; skb -> len += copy ; skb -> data_len += copy ; skb -> truesize += copy ; atomic_add ( copy , & sk -> sk_wmem_alloc ) ; } offset += copy ; length -= copy ; } return 0 ; error : cork -> length -= length ; IP6_INC_STATS ( sock_net ( sk ) , rt -> rt6i_idev , IPSTATS_MIB_OUTDISCARDS ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mtu , flags , rt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-400 static void Sp_split_regexp ( js_State * J ) { js_Regexp * re ; const char * text ; int limit , len , k ; const char * p , * a , * b , * c , * e ; Resub m ; text = checkstring ( J , 0 ) ; re = js_toregexp ( J , 1 ) ; limit = js_isdefined ( J , 2 ) ? js_tointeger ( J , 2 ) : 1 << 30 ; js_newarray ( J ) ; len = 0 ; e = text + strlen ( text ) ; if ( e == text ) { <S2SV_StartBug> if ( js_regexec ( re -> prog , text , & m , 0 ) ) { <S2SV_EndBug> if ( len == limit ) return ; js_pushliteral ( J , \"\" ) ; js_setindex ( J , - 2 , 0 ) ; } return ; } p = a = text ; while ( a < e ) { <S2SV_StartBug> if ( js_regexec ( re -> prog , a , & m , a > text ? REG_NOTBOL : 0 ) ) <S2SV_EndBug> break ; b = m . sub [ 0 ] . sp ; c = m . sub [ 0 ] . ep ; if ( b == p ) { ++ a ; continue ; } if ( len == limit ) return ; js_pushlstring ( J , p , b - p ) ; js_setindex ( J , - 2 , len ++ ) ; for ( k = 1 ; k < m . nsub ; ++ k ) { if ( len == limit ) return ; js_pushlstring ( J , m . sub [ k ] . sp , m . sub [ k ] . ep - m . sub [ k ] . sp ) ; js_setindex ( J , - 2 , len ++ ) ; } a = p = c ; } if ( len == limit ) return ; js_pushstring ( J , p ) ; js_setindex ( J , - 2 , len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( js_doregexec ( J , <S2SV_ModEnd> re -> prog <S2SV_ModStart> { if ( js_doregexec ( J , <S2SV_ModEnd> re -> prog\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14171\n\n```\nCWE-834 static int nsv_parse_NSVf_header ( AVFormatContext * s ) { NSVContext * nsv = s -> priv_data ; AVIOContext * pb = s -> pb ; unsigned int av_unused file_size ; unsigned int size ; int64_t duration ; int strings_size ; int table_entries ; int table_entries_used ; nsv -> state = NSV_UNSYNC ; size = avio_rl32 ( pb ) ; if ( size < 28 ) return - 1 ; nsv -> NSVf_end = size ; file_size = ( uint32_t ) avio_rl32 ( pb ) ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>chunk_size<S2SV_blank>%u\\\\n\" , size ) ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>file_size<S2SV_blank>%u\\\\n\" , file_size ) ; nsv -> duration = duration = avio_rl32 ( pb ) ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>duration<S2SV_blank>%\" PRId64 \"<S2SV_blank>ms\\\\n\" , duration ) ; strings_size = avio_rl32 ( pb ) ; table_entries = avio_rl32 ( pb ) ; table_entries_used = avio_rl32 ( pb ) ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>info-strings<S2SV_blank>size:<S2SV_blank>%d,<S2SV_blank>table<S2SV_blank>entries:<S2SV_blank>%d,<S2SV_blank>bis<S2SV_blank>%d\\\\n\" , strings_size , table_entries , table_entries_used ) ; if ( avio_feof ( pb ) ) return - 1 ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>got<S2SV_blank>header;<S2SV_blank>filepos<S2SV_blank>%\" PRId64 \"\\\\n\" , avio_tell ( pb ) ) ; if ( strings_size > 0 ) { char * strings ; char * p , * endp ; char * token , * value ; char quote ; p = strings = av_mallocz ( ( size_t ) strings_size + 1 ) ; if ( ! p ) return AVERROR ( ENOMEM ) ; endp = strings + strings_size ; avio_read ( pb , strings , strings_size ) ; while ( p < endp ) { while ( * p == '<S2SV_blank>' ) p ++ ; if ( p >= endp - 2 ) break ; token = p ; p = strchr ( p , '=' ) ; if ( ! p || p >= endp - 2 ) break ; * p ++ = '\\\\0' ; quote = * p ++ ; value = p ; p = strchr ( p , quote ) ; if ( ! p || p >= endp ) break ; * p ++ = '\\\\0' ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>NSVf<S2SV_blank>INFO:<S2SV_blank>%s=\\'%s\\'\\\\n\" , token , value ) ; av_dict_set ( & s -> metadata , token , value , 0 ) ; } av_free ( strings ) ; } if ( avio_feof ( pb ) ) return - 1 ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>got<S2SV_blank>infos;<S2SV_blank>filepos<S2SV_blank>%\" PRId64 \"\\\\n\" , avio_tell ( pb ) ) ; if ( table_entries_used > 0 ) { int i ; nsv -> index_entries = table_entries_used ; if ( ( unsigned ) table_entries_used >= UINT_MAX / sizeof ( uint32_t ) ) return - 1 ; nsv -> nsvs_file_offset = av_malloc_array ( ( unsigned ) table_entries_used , sizeof ( uint32_t ) ) ; if ( ! nsv -> nsvs_file_offset ) return AVERROR ( ENOMEM ) ; <S2SV_StartBug> for ( i = 0 ; i < table_entries_used ; i ++ ) <S2SV_EndBug> <S2SV_StartBug> nsv -> nsvs_file_offset [ i ] = avio_rl32 ( pb ) + size ; <S2SV_EndBug> if ( table_entries > table_entries_used && avio_rl32 ( pb ) == MKTAG ( 'T' , 'O' , 'C' , '2' ) ) { nsv -> nsvs_timestamps = av_malloc_array ( ( unsigned ) table_entries_used , sizeof ( uint32_t ) ) ; if ( ! nsv -> nsvs_timestamps ) return AVERROR ( ENOMEM ) ; for ( i = 0 ; i < table_entries_used ; i ++ ) { nsv -> nsvs_timestamps [ i ] = avio_rl32 ( pb ) ; } } } av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>got<S2SV_blank>index;<S2SV_blank>filepos<S2SV_blank>%\" PRId64 \"\\\\n\" , avio_tell ( pb ) ) ; avio_seek ( pb , nsv -> base_offset + size , SEEK_SET ) ; if ( avio_feof ( pb ) ) return - 1 ; nsv -> state = NSV_HAS_READ_NSVF ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> + size ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1344\n\n```\nCWE-264 <S2SV_StartBug> static bool do_write_pids ( pid_t tpid , const char * contrl , const char * cg , const char * file , const char * buf ) <S2SV_EndBug> { int sock [ 2 ] = { - 1 , - 1 } ; pid_t qpid , cpid = - 1 ; FILE * pids_file = NULL ; bool answer = false , fail = false ; pids_file = open_pids_file ( contrl , cg ) ; if ( ! pids_file ) return false ; if ( socketpair ( AF_UNIX , SOCK_DGRAM , 0 , sock ) < 0 ) { perror ( \"socketpair\" ) ; goto out ; } cpid = fork ( ) ; if ( cpid == - 1 ) goto out ; if ( ! cpid ) { fclose ( pids_file ) ; pid_from_ns_wrapper ( sock [ 1 ] , tpid ) ; } const char * ptr = buf ; while ( sscanf ( ptr , \"%d\" , & qpid ) == 1 ) { struct ucred cred ; char v ; if ( write ( sock [ 0 ] , & qpid , sizeof ( qpid ) ) != sizeof ( qpid ) ) { fprintf ( stderr , \"%s:<S2SV_blank>error<S2SV_blank>writing<S2SV_blank>pid<S2SV_blank>to<S2SV_blank>child:<S2SV_blank>%s\\\\n\" , __func__ , strerror ( errno ) ) ; goto out ; } if ( recv_creds ( sock [ 0 ] , & cred , & v ) ) { if ( v == '0' ) { <S2SV_StartBug> if ( fprintf ( pids_file , \"%d\" , ( int ) cred . pid ) < 0 ) <S2SV_EndBug> fail = true ; } } ptr = strchr ( ptr , '\\\\n' ) ; if ( ! ptr ) break ; ptr ++ ; } qpid = - 1 ; if ( write ( sock [ 0 ] , & qpid , sizeof ( qpid ) ) != sizeof ( qpid ) ) fprintf ( stderr , \"Warning:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ask<S2SV_blank>child<S2SV_blank>to<S2SV_blank>exit\\\\n\" ) ; if ( ! fail ) answer = true ; out : if ( cpid != - 1 ) wait_for_pid ( cpid ) ; if ( sock [ 0 ] != - 1 ) { close ( sock [ 0 ] ) ; close ( sock [ 1 ] ) ; } if ( pids_file ) { if ( fclose ( pids_file ) != 0 ) answer = false ; } return answer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pid_t tpid , uid_t tuid , <S2SV_ModStart> { if ( ! may_move_pid ( tpid , tuid , <S2SV_ModEnd> cred . pid <S2SV_ModStart> . pid ) ) { fail = true ; break ; } if ( fprintf ( pids_file , \"%d\" , ( int ) cred . pid )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4565\n\n```\nCWE-189 static void tcp_illinois_info ( struct sock * sk , u32 ext , struct sk_buff * skb ) { const struct illinois * ca = inet_csk_ca ( sk ) ; if ( ext & ( 1 << ( INET_DIAG_VEGASINFO - 1 ) ) ) { struct tcpvegas_info info = { . tcpv_enabled = 1 , . tcpv_rttcnt = ca -> cnt_rtt , . tcpv_minrtt = ca -> base_rtt , } ; <S2SV_StartBug> u64 t = ca -> sum_rtt ; <S2SV_EndBug> <S2SV_StartBug> do_div ( t , ca -> cnt_rtt ) ; <S2SV_EndBug> <S2SV_StartBug> info . tcpv_rtt = t ; <S2SV_EndBug> nla_put ( skb , INET_DIAG_VEGASINFO , sizeof ( info ) , & info ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , } ; if ( info . tcpv_rttcnt > 0 ) { <S2SV_ModStart> ( t , info . tcpv_rttcnt <S2SV_ModEnd> ) ; info <S2SV_ModStart> = t ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2898\n\n```\nCWE-200 static int packet_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sk_buff * skb ; int copied , err ; struct sockaddr_ll * sll ; int vnet_hdr_len = 0 ; err = - EINVAL ; if ( flags & ~ ( MSG_PEEK | MSG_DONTWAIT | MSG_TRUNC | MSG_CMSG_COMPAT | MSG_ERRQUEUE ) ) goto out ; # if 0 if ( pkt_sk ( sk ) -> ifindex < 0 ) return - ENODEV ; # endif if ( flags & MSG_ERRQUEUE ) { err = packet_recv_error ( sk , msg , len ) ; goto out ; } skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & err ) ; if ( skb == NULL ) goto out ; if ( pkt_sk ( sk ) -> has_vnet_hdr ) { struct virtio_net_hdr vnet_hdr = { 0 } ; err = - EINVAL ; vnet_hdr_len = sizeof ( vnet_hdr ) ; if ( len < vnet_hdr_len ) goto out_free ; len -= vnet_hdr_len ; if ( skb_is_gso ( skb ) ) { struct skb_shared_info * sinfo = skb_shinfo ( skb ) ; vnet_hdr . hdr_len = skb_headlen ( skb ) ; vnet_hdr . gso_size = sinfo -> gso_size ; if ( sinfo -> gso_type & SKB_GSO_TCPV4 ) vnet_hdr . gso_type = VIRTIO_NET_HDR_GSO_TCPV4 ; else if ( sinfo -> gso_type & SKB_GSO_TCPV6 ) vnet_hdr . gso_type = VIRTIO_NET_HDR_GSO_TCPV6 ; else if ( sinfo -> gso_type & SKB_GSO_UDP ) vnet_hdr . gso_type = VIRTIO_NET_HDR_GSO_UDP ; else if ( sinfo -> gso_type & SKB_GSO_FCOE ) goto out_free ; else BUG ( ) ; if ( sinfo -> gso_type & SKB_GSO_TCP_ECN ) vnet_hdr . gso_type |= VIRTIO_NET_HDR_GSO_ECN ; } else vnet_hdr . gso_type = VIRTIO_NET_HDR_GSO_NONE ; if ( skb -> ip_summed == CHECKSUM_PARTIAL ) { vnet_hdr . flags = VIRTIO_NET_HDR_F_NEEDS_CSUM ; vnet_hdr . csum_start = skb_checksum_start_offset ( skb ) ; vnet_hdr . csum_offset = skb -> csum_offset ; } err = memcpy_toiovec ( msg -> msg_iov , ( void * ) & vnet_hdr , vnet_hdr_len ) ; if ( err < 0 ) goto out_free ; } sll = & PACKET_SKB_CB ( skb ) -> sa . ll ; if ( sock -> type == SOCK_PACKET ) msg -> msg_namelen = sizeof ( struct sockaddr_pkt ) ; else msg -> msg_namelen = sll -> sll_halen + offsetof ( struct sockaddr_ll , sll_addr ) ; copied = skb -> len ; if ( copied > len ) { copied = len ; msg -> msg_flags |= MSG_TRUNC ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto out_free ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( msg -> msg_name ) memcpy ( msg -> msg_name , & PACKET_SKB_CB ( skb ) -> sa , msg -> msg_namelen ) ; if ( pkt_sk ( sk ) -> auxdata ) { struct tpacket_auxdata aux ; aux . tp_status = TP_STATUS_USER ; if ( skb -> ip_summed == CHECKSUM_PARTIAL ) aux . tp_status |= TP_STATUS_CSUMNOTREADY ; aux . tp_len = PACKET_SKB_CB ( skb ) -> origlen ; aux . tp_snaplen = skb -> len ; aux . tp_mac = 0 ; aux . tp_net = skb_network_offset ( skb ) ; if ( vlan_tx_tag_present ( skb ) ) { aux . tp_vlan_tci = vlan_tx_tag_get ( skb ) ; aux . tp_status |= TP_STATUS_VLAN_VALID ; } else { aux . tp_vlan_tci = 0 ; } <S2SV_StartBug> put_cmsg ( msg , SOL_PACKET , PACKET_AUXDATA , sizeof ( aux ) , & aux ) ; <S2SV_EndBug> } err = vnet_hdr_len + ( ( flags & MSG_TRUNC ) ? skb -> len : copied ) ; out_free : skb_free_datagram ( sk , skb ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } aux . tp_padding = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5986\n\n```\nCWE-362 static int sctp_wait_for_sndbuf ( struct sctp_association * asoc , long * timeo_p , size_t msg_len ) { struct sock * sk = asoc -> base . sk ; int err = 0 ; long current_timeo = * timeo_p ; DEFINE_WAIT ( wait ) ; pr_debug ( \"%s:<S2SV_blank>asoc:%p,<S2SV_blank>timeo:%ld,<S2SV_blank>msg_len:%zu\\\\n\" , __func__ , asoc , * timeo_p , msg_len ) ; sctp_association_hold ( asoc ) ; for ( ; ; ) { prepare_to_wait_exclusive ( & asoc -> wait , & wait , TASK_INTERRUPTIBLE ) ; if ( ! * timeo_p ) goto do_nonblock ; if ( sk -> sk_err || asoc -> state >= SCTP_STATE_SHUTDOWN_PENDING || asoc -> base . dead ) goto do_error ; if ( signal_pending ( current ) ) goto do_interrupted ; if ( msg_len <= sctp_wspace ( asoc ) ) break ; release_sock ( sk ) ; current_timeo = schedule_timeout ( current_timeo ) ; <S2SV_StartBug> BUG_ON ( sk != asoc -> base . sk ) ; <S2SV_EndBug> lock_sock ( sk ) ; * timeo_p = current_timeo ; } out : finish_wait ( & asoc -> wait , & wait ) ; sctp_association_put ( asoc ) ; return err ; do_error : err = - EPIPE ; goto out ; do_interrupted : err = sock_intr_errno ( * timeo_p ) ; goto out ; do_nonblock : err = - EAGAIN ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_timeo ) ; if <S2SV_ModEnd> ( sk != <S2SV_ModStart> . sk ) goto do_error\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2486\n\n```\nCWE-264 const char * string_of_NPNVariable ( int variable ) { const char * str ; switch ( variable ) { # define _ ( VAL ) case VAL : str = # VAL ; break ; _ ( NPNVxDisplay ) ; _ ( NPNVxtAppContext ) ; _ ( NPNVnetscapeWindow ) ; _ ( NPNVjavascriptEnabledBool ) ; _ ( NPNVasdEnabledBool ) ; _ ( NPNVisOfflineBool ) ; _ ( NPNVserviceManager ) ; _ ( NPNVDOMElement ) ; _ ( NPNVDOMWindow ) ; _ ( NPNVToolkit ) ; _ ( NPNVSupportsXEmbedBool ) ; _ ( NPNVWindowNPObject ) ; _ ( NPNVPluginElementNPObject ) ; _ ( NPNVSupportsWindowless ) ; <S2SV_StartBug> # undef _ <S2SV_EndBug> default : switch ( variable & 0xff ) { # define _ ( VAL , VAR ) case VAL : str = # VAR ; break _ ( 10 , NPNVserviceManager ) ; _ ( 11 , NPNVDOMElement ) ; _ ( 12 , NPNVDOMWindow ) ; _ ( 13 , NPNVToolkit ) ; # undef _ default : str = \"<unknown<S2SV_blank>variable>\" ; break ; } break ; } return str ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NPNVSupportsWindowless ) ; _ ( NPNVprivateModeBool ) ; _ ( NPNVsupportsAdvancedKeyHandling ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 long FS_FOpenFileRead ( const char * filename , fileHandle_t * file , qboolean uniqueFILE ) { searchpath_t * search ; long len ; <S2SV_StartBug> if ( ! fs_searchpaths ) <S2SV_EndBug> Com_Error ( ERR_FATAL , \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; <S2SV_StartBug> for ( search = fs_searchpaths ; search ; search = search -> next ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> len = FS_FOpenFileReadDir ( filename , search , file , uniqueFILE , qfalse ) ; if ( file == NULL ) { if ( len > 0 ) return len ; } else { if ( len >= 0 && * file ) return len ; } } # ifdef FS_MISSING if ( missingFiles ) fprintf ( missingFiles , \"%s\\\\n\" , filename ) ; # endif if ( file ) { * file = 0 ; return - 1 ; } else { return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long len ; qboolean isLocalConfig ; <S2SV_ModStart> \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; isLocalConfig = ! strcmp ( filename , \"autoexec.cfg\" ) || ! strcmp ( filename , Q3CONFIG_CFG ) ; <S2SV_ModStart> next ) { if ( isLocalConfig && search -> pack ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0830\n\n```\nCWE-119 void btif_config_save ( void ) { assert ( alarm_timer != NULL ) ; assert ( config != NULL ) ; <S2SV_StartBug> alarm_set ( alarm_timer , CONFIG_SETTLE_PERIOD_MS , timer_config_save , NULL ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , CONFIG_SETTLE_PERIOD_MS , timer_config_save_cb <S2SV_ModEnd> , NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_DetachItemFromObject ( cJSON * object , const char * string ) { int i = 0 ; cJSON * c = object -> child ; <S2SV_StartBug> while ( c && cJSON_strcasecmp ( c -> string , string ) ) { <S2SV_EndBug> ++ i ; c = c -> next ; <S2SV_StartBug> } <S2SV_EndBug> if ( c ) return cJSON_DetachItemFromArray ( object , i ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> string ) ) i ++ , <S2SV_ModEnd> c = c <S2SV_ModStart> -> next ; <S2SV_ModEnd> if ( c\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4913\n\n```\nCWE-20 static int rose_parse_national ( unsigned char * p , struct rose_facilities_struct * facilities , int len ) { unsigned char * pt ; unsigned char l , lg , n = 0 ; int fac_national_digis_received = 0 ; do { switch ( * p & 0xC0 ) { case 0x00 : p += 2 ; n += 2 ; len -= 2 ; break ; case 0x40 : if ( * p == FAC_NATIONAL_RAND ) facilities -> rand = ( ( p [ 1 ] << 8 ) & 0xFF00 ) + ( ( p [ 2 ] << 0 ) & 0x00FF ) ; p += 3 ; n += 3 ; len -= 3 ; break ; case 0x80 : p += 4 ; n += 4 ; len -= 4 ; break ; case 0xC0 : l = p [ 1 ] ; if ( * p == FAC_NATIONAL_DEST_DIGI ) { if ( ! fac_national_digis_received ) { memcpy ( & facilities -> source_digis [ 0 ] , p + 2 , AX25_ADDR_LEN ) ; facilities -> source_ndigis = 1 ; } } else if ( * p == FAC_NATIONAL_SRC_DIGI ) { if ( ! fac_national_digis_received ) { memcpy ( & facilities -> dest_digis [ 0 ] , p + 2 , AX25_ADDR_LEN ) ; facilities -> dest_ndigis = 1 ; } } else if ( * p == FAC_NATIONAL_FAIL_CALL ) { memcpy ( & facilities -> fail_call , p + 2 , AX25_ADDR_LEN ) ; } else if ( * p == FAC_NATIONAL_FAIL_ADD ) { memcpy ( & facilities -> fail_addr , p + 3 , ROSE_ADDR_LEN ) ; } else if ( * p == FAC_NATIONAL_DIGIS ) { fac_national_digis_received = 1 ; facilities -> source_ndigis = 0 ; facilities -> dest_ndigis = 0 ; for ( pt = p + 2 , lg = 0 ; lg < l ; pt += AX25_ADDR_LEN , lg += AX25_ADDR_LEN ) { <S2SV_StartBug> if ( pt [ 6 ] & AX25_HBIT ) <S2SV_EndBug> memcpy ( & facilities -> dest_digis [ facilities -> dest_ndigis ++ ] , pt , AX25_ADDR_LEN ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> memcpy ( & facilities -> source_digis [ facilities -> source_ndigis ++ ] , pt , AX25_ADDR_LEN ) ; <S2SV_EndBug> } } p += l + 2 ; n += l + 2 ; len -= l + 2 ; break ; } } while ( * p != 0x00 && len > 0 ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & AX25_HBIT ) { if ( facilities -> dest_ndigis >= ROSE_MAX_DIGIS ) return - 1 ; <S2SV_ModStart> AX25_ADDR_LEN ) ; } else { if ( facilities -> source_ndigis >= ROSE_MAX_DIGIS ) return - 1 ; <S2SV_ModEnd> memcpy ( & <S2SV_ModStart> AX25_ADDR_LEN ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2898\n\n```\nCWE-200 static int tpacket_rcv ( struct sk_buff * skb , struct net_device * dev , struct packet_type * pt , struct net_device * orig_dev ) { struct sock * sk ; struct packet_sock * po ; struct sockaddr_ll * sll ; union { struct tpacket_hdr * h1 ; struct tpacket2_hdr * h2 ; void * raw ; } h ; u8 * skb_head = skb -> data ; int skb_len = skb -> len ; unsigned int snaplen , res ; unsigned long status = TP_STATUS_LOSING | TP_STATUS_USER ; unsigned short macoff , netoff , hdrlen ; struct sk_buff * copy_skb = NULL ; struct timeval tv ; struct timespec ts ; struct skb_shared_hwtstamps * shhwtstamps = skb_hwtstamps ( skb ) ; if ( skb -> pkt_type == PACKET_LOOPBACK ) goto drop ; sk = pt -> af_packet_priv ; po = pkt_sk ( sk ) ; if ( ! net_eq ( dev_net ( dev ) , sock_net ( sk ) ) ) goto drop ; if ( dev -> header_ops ) { if ( sk -> sk_type != SOCK_DGRAM ) skb_push ( skb , skb -> data - skb_mac_header ( skb ) ) ; else if ( skb -> pkt_type == PACKET_OUTGOING ) { skb_pull ( skb , skb_network_offset ( skb ) ) ; } } if ( skb -> ip_summed == CHECKSUM_PARTIAL ) status |= TP_STATUS_CSUMNOTREADY ; snaplen = skb -> len ; res = run_filter ( skb , sk , snaplen ) ; if ( ! res ) goto drop_n_restore ; if ( snaplen > res ) snaplen = res ; if ( sk -> sk_type == SOCK_DGRAM ) { macoff = netoff = TPACKET_ALIGN ( po -> tp_hdrlen ) + 16 + po -> tp_reserve ; } else { unsigned maclen = skb_network_offset ( skb ) ; netoff = TPACKET_ALIGN ( po -> tp_hdrlen + ( maclen < 16 ? 16 : maclen ) ) + po -> tp_reserve ; macoff = netoff - maclen ; } if ( macoff + snaplen > po -> rx_ring . frame_size ) { if ( po -> copy_thresh && atomic_read ( & sk -> sk_rmem_alloc ) + skb -> truesize < ( unsigned ) sk -> sk_rcvbuf ) { if ( skb_shared ( skb ) ) { copy_skb = skb_clone ( skb , GFP_ATOMIC ) ; } else { copy_skb = skb_get ( skb ) ; skb_head = skb -> data ; } if ( copy_skb ) skb_set_owner_r ( copy_skb , sk ) ; } snaplen = po -> rx_ring . frame_size - macoff ; if ( ( int ) snaplen < 0 ) snaplen = 0 ; } spin_lock ( & sk -> sk_receive_queue . lock ) ; h . raw = packet_current_frame ( po , & po -> rx_ring , TP_STATUS_KERNEL ) ; if ( ! h . raw ) goto ring_is_full ; packet_increment_head ( & po -> rx_ring ) ; po -> stats . tp_packets ++ ; if ( copy_skb ) { status |= TP_STATUS_COPY ; __skb_queue_tail ( & sk -> sk_receive_queue , copy_skb ) ; } if ( ! po -> stats . tp_drops ) status &= ~ TP_STATUS_LOSING ; spin_unlock ( & sk -> sk_receive_queue . lock ) ; skb_copy_bits ( skb , 0 , h . raw + macoff , snaplen ) ; switch ( po -> tp_version ) { case TPACKET_V1 : h . h1 -> tp_len = skb -> len ; h . h1 -> tp_snaplen = snaplen ; h . h1 -> tp_mac = macoff ; h . h1 -> tp_net = netoff ; if ( ( po -> tp_tstamp & SOF_TIMESTAMPING_SYS_HARDWARE ) && shhwtstamps -> syststamp . tv64 ) tv = ktime_to_timeval ( shhwtstamps -> syststamp ) ; else if ( ( po -> tp_tstamp & SOF_TIMESTAMPING_RAW_HARDWARE ) && shhwtstamps -> hwtstamp . tv64 ) tv = ktime_to_timeval ( shhwtstamps -> hwtstamp ) ; else if ( skb -> tstamp . tv64 ) tv = ktime_to_timeval ( skb -> tstamp ) ; else do_gettimeofday ( & tv ) ; h . h1 -> tp_sec = tv . tv_sec ; h . h1 -> tp_usec = tv . tv_usec ; hdrlen = sizeof ( * h . h1 ) ; break ; case TPACKET_V2 : h . h2 -> tp_len = skb -> len ; h . h2 -> tp_snaplen = snaplen ; h . h2 -> tp_mac = macoff ; h . h2 -> tp_net = netoff ; if ( ( po -> tp_tstamp & SOF_TIMESTAMPING_SYS_HARDWARE ) && shhwtstamps -> syststamp . tv64 ) ts = ktime_to_timespec ( shhwtstamps -> syststamp ) ; else if ( ( po -> tp_tstamp & SOF_TIMESTAMPING_RAW_HARDWARE ) && shhwtstamps -> hwtstamp . tv64 ) ts = ktime_to_timespec ( shhwtstamps -> hwtstamp ) ; else if ( skb -> tstamp . tv64 ) ts = ktime_to_timespec ( skb -> tstamp ) ; else getnstimeofday ( & ts ) ; h . h2 -> tp_sec = ts . tv_sec ; h . h2 -> tp_nsec = ts . tv_nsec ; if ( vlan_tx_tag_present ( skb ) ) { h . h2 -> tp_vlan_tci = vlan_tx_tag_get ( skb ) ; status |= TP_STATUS_VLAN_VALID ; } else { h . h2 -> tp_vlan_tci = 0 ; } <S2SV_StartBug> hdrlen = sizeof ( * h . h2 ) ; <S2SV_EndBug> break ; default : BUG ( ) ; } sll = h . raw + TPACKET_ALIGN ( hdrlen ) ; sll -> sll_halen = dev_parse_header ( skb , sll -> sll_addr ) ; sll -> sll_family = AF_PACKET ; sll -> sll_hatype = dev -> type ; sll -> sll_protocol = skb -> protocol ; sll -> sll_pkttype = skb -> pkt_type ; if ( unlikely ( po -> origdev ) ) sll -> sll_ifindex = orig_dev -> ifindex ; else sll -> sll_ifindex = dev -> ifindex ; __packet_set_status ( po , h . raw , status ) ; smp_mb ( ) ; # if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 1 { u8 * start , * end ; end = ( u8 * ) PAGE_ALIGN ( ( unsigned long ) h . raw + macoff + snaplen ) ; for ( start = h . raw ; start < end ; start += PAGE_SIZE ) flush_dcache_page ( pgv_to_page ( start ) ) ; } # endif sk -> sk_data_ready ( sk , 0 ) ; drop_n_restore : if ( skb_head != skb -> data && skb_shared ( skb ) ) { skb -> data = skb_head ; skb -> len = skb_len ; } drop : kfree_skb ( skb ) ; return 0 ; ring_is_full : po -> stats . tp_drops ++ ; spin_unlock ( & sk -> sk_receive_queue . lock ) ; sk -> sk_data_ready ( sk , 0 ) ; kfree_skb ( copy_skb ) ; goto drop_n_restore ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } h . h2 -> tp_padding = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfsd_cross_mnt ( struct svc_rqst * rqstp , struct dentry * * dpp , struct svc_export * * expp ) { struct svc_export * exp = * expp , * exp2 = NULL ; struct dentry * dentry = * dpp ; struct path path = { . mnt = mntget ( exp -> ex_path . mnt ) , . dentry = dget ( dentry ) } ; int err = 0 ; err = follow_down ( & path ) ; if ( err < 0 ) <S2SV_StartBug> goto out ; <S2SV_EndBug> exp2 = rqst_exp_get_by_name ( rqstp , & path ) ; if ( IS_ERR ( exp2 ) ) { err = PTR_ERR ( exp2 ) ; if ( err == - ENOENT && ! ( exp -> ex_flags & NFSEXP_V4ROOT ) ) err = 0 ; path_put ( & path ) ; goto out ; } if ( nfsd_v4client ( rqstp ) || ( exp -> ex_flags & NFSEXP_CROSSMOUNT ) || EX_NOHIDE ( exp2 ) ) { * dpp = path . dentry ; path . dentry = dentry ; * expp = exp2 ; exp2 = exp ; } path_put ( & path ) ; exp_put ( exp2 ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; if ( path . mnt == exp -> ex_path . mnt && path . dentry == dentry && nfsd_mountpoint ( dentry , exp ) == 2 ) { path_put ( & path ) ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1573\n\n```\nCWE-19 static int nft_flush_table ( struct nft_ctx * ctx ) { int err ; struct nft_chain * chain , * nc ; struct nft_set * set , * ns ; <S2SV_StartBug> list_for_each_entry_safe ( chain , nc , & ctx -> table -> chains , list ) { <S2SV_EndBug> ctx -> chain = chain ; err = nft_delrule_by_chain ( ctx ) ; if ( err < 0 ) goto out ; <S2SV_StartBug> err = nft_delchain ( ctx ) ; <S2SV_EndBug> if ( err < 0 ) goto out ; } <S2SV_StartBug> list_for_each_entry_safe ( set , ns , & ctx -> table -> sets , list ) { <S2SV_EndBug> <S2SV_StartBug> if ( set -> flags & NFT_SET_ANONYMOUS && <S2SV_EndBug> ! list_empty ( & set -> bindings ) ) continue ; err = nft_delset ( ctx , set ) ; if ( err < 0 ) goto out ; } err = nft_deltable ( ctx ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ns ; list_for_each_entry ( chain <S2SV_ModEnd> , & ctx <S2SV_ModStart> goto out ; } list_for_each_entry_safe ( set , ns , & ctx -> table -> sets , list ) { if ( set -> flags & NFT_SET_ANONYMOUS && ! list_empty ( & set -> bindings ) ) continue ; err = nft_delset ( ctx , set <S2SV_ModEnd> ) ; if <S2SV_ModStart> } list_for_each_entry_safe ( chain , nc <S2SV_ModEnd> , & ctx <S2SV_ModStart> -> table -> chains <S2SV_ModEnd> , list ) <S2SV_ModStart> list ) { ctx -> chain = chain ; err = nft_delchain ( ctx <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 static __inline__ void jiffies_to_compat_timeval ( unsigned long jiffies , struct compat_timeval * value ) { u64 nsec = ( u64 ) jiffies * TICK_NSEC ; <S2SV_StartBug> long rem ; <S2SV_EndBug> <S2SV_StartBug> value -> tv_sec = div_long_long_rem ( nsec , NSEC_PER_SEC , & rem ) ; <S2SV_EndBug> value -> tv_usec = rem / NSEC_PER_USEC ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * TICK_NSEC ; u32 <S2SV_ModEnd> rem ; value <S2SV_ModStart> -> tv_sec = div_u64_rem <S2SV_ModEnd> ( nsec ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13046\n\n```\nCWE-125 static int bgp_attr_print ( netdissect_options * ndo , u_int atype , const u_char * pptr , u_int len ) { int i ; uint16_t af ; uint8_t safi , snpa , nhlen ; union { float f ; uint32_t i ; } bw ; int advance ; u_int tlen ; const u_char * tptr ; char buf [ MAXHOSTNAMELEN + 100 ] ; int as_size ; tptr = pptr ; tlen = len ; switch ( atype ) { case BGPTYPE_ORIGIN : if ( len != 1 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK ( * tptr ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_origin_values , \"Unknown<S2SV_blank>Origin<S2SV_blank>Typecode\" , tptr [ 0 ] ) ) ) ; } break ; case BGPTYPE_AS4_PATH : case BGPTYPE_AS_PATH : if ( len % 2 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } if ( ! len ) { ND_PRINT ( ( ndo , \"empty\" ) ) ; break ; } as_size = bgp_attr_get_as_size ( ndo , atype , pptr , len ) ; while ( tptr < pptr + len ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_open_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; for ( i = 0 ; i < tptr [ 1 ] * as_size ; i += as_size ) { ND_TCHECK2 ( tptr [ 2 + i ] , as_size ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , as_printf ( ndo , astostr , sizeof ( astostr ) , as_size == 2 ? EXTRACT_16BITS ( & tptr [ 2 + i ] ) : EXTRACT_32BITS ( & tptr [ 2 + i ] ) ) ) ) ; } ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_close_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; tptr += 2 + tptr [ 1 ] * as_size ; } break ; case BGPTYPE_NEXT_HOP : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; } break ; case BGPTYPE_MULTI_EXIT_DISC : case BGPTYPE_LOCAL_PREF : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( tptr ) ) ) ; } break ; case BGPTYPE_ATOMIC_AGGREGATE : if ( len != 0 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; case BGPTYPE_AGGREGATOR : if ( len != 6 && len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , len ) ; if ( len == 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_16BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 2 ) ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; } break ; case BGPTYPE_AGGREGATOR4 : if ( len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGPTYPE_COMMUNITIES : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint32_t comm ; ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; comm = EXTRACT_32BITS ( tptr ) ; switch ( comm ) { case BGP_COMMUNITY_NO_EXPORT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT\" ) ) ; break ; case BGP_COMMUNITY_NO_ADVERT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_ADVERTISE\" ) ) ; break ; case BGP_COMMUNITY_NO_EXPORT_SUBCONFED : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT_SUBCONFED\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%u:%u%s\" , ( comm >> 16 ) & 0xffff , comm & 0xffff , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; break ; } tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_ORIGINATOR_ID : if ( len != 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGPTYPE_CLUSTER_LIST : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s%s\" , ipaddr_string ( ndo , tptr ) , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_MP_REACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; goto done ; break ; } tptr += 3 ; ND_TCHECK ( tptr [ 0 ] ) ; nhlen = tptr [ 0 ] ; tlen = nhlen ; tptr ++ ; if ( tlen ) { int nnh = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>nexthop:<S2SV_blank>\" ) ) ; while ( tlen > 0 ) { if ( nnh ++ > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; } switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in_addr ) ; tptr += sizeof ( struct in_addr ) ; } break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : if ( tlen < ( int ) sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in6_addr ) ; tptr += sizeof ( struct in6_addr ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= ( sizeof ( struct in_addr ) ) ; tptr += ( sizeof ( struct in_addr ) ) ; } break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"%s\" , isonsap_string ( ndo , tptr , tlen ) ) ) ; tptr += tlen ; tlen = 0 ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < BGP_VPN_RD_LEN + 1 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , isonsap_string ( ndo , tptr + BGP_VPN_RD_LEN , tlen - BGP_VPN_RD_LEN ) ) ) ; if ( EXTRACT_32BITS ( tptr + BGP_VPN_RD_LEN ) == 0x47000601 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN + 4 ) ) ) ; else if ( EXTRACT_24BITS ( tptr + BGP_VPN_RD_LEN ) == 0x350000 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN + 3 ) ) ) ; tptr += tlen ; tlen = 0 ; } break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u/SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; tptr += tlen ; tlen = 0 ; goto done ; break ; } } } ND_PRINT ( ( ndo , \",<S2SV_blank>nh-length:<S2SV_blank>%u\" , nhlen ) ) ; tptr += tlen ; ND_TCHECK ( tptr [ 0 ] ) ; snpa = tptr [ 0 ] ; tptr ++ ; if ( snpa ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>SNPA\" , snpa ) ) ; for ( ; snpa > 0 ; snpa -- ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d<S2SV_blank>bytes\" , tptr [ 0 ] ) ) ; tptr += tptr [ 0 ] + 1 ; } } else { ND_PRINT ( ( ndo , \",<S2SV_blank>no<S2SV_blank>SNPA\" ) ) ; } while ( tptr < pptr + len ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : advance = decode_rt_routing_info ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * tptr , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } done : break ; case BGPTYPE_MP_UNREACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , BGP_MP_NLRI_MINSIZE ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; if ( len == BGP_MP_NLRI_MINSIZE ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>End-of-Rib<S2SV_blank>Marker<S2SV_blank>(empty<S2SV_blank>NLRI)\" ) ) ; tptr += 3 ; while ( tptr < pptr + len ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * ( tptr - 3 ) , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr - 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } break ; case BGPTYPE_EXTD_COMMUNITIES : if ( len % 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint16_t extd_comm ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; extd_comm = EXTRACT_16BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>Flags<S2SV_blank>[%s]\" , tok2str ( bgp_extd_comm_subtype_values , \"unknown<S2SV_blank>extd<S2SV_blank>community<S2SV_blank>typecode\" , extd_comm ) , extd_comm , bittok2str ( bgp_extd_comm_flag_values , \"none\" , extd_comm ) ) ) ; ND_TCHECK2 ( * ( tptr + 2 ) , 6 ) ; switch ( extd_comm ) { case BGP_EXT_COM_RT_0 : case BGP_EXT_COM_RO_0 : case BGP_EXT_COM_L2VPN_RT_0 : ND_PRINT ( ( ndo , \":<S2SV_blank>%u:%u<S2SV_blank>(=<S2SV_blank>%s)\" , EXTRACT_16BITS ( tptr + 2 ) , EXTRACT_32BITS ( tptr + 4 ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_RT_1 : case BGP_EXT_COM_RO_1 : case BGP_EXT_COM_L2VPN_RT_1 : case BGP_EXT_COM_VRF_RT_IMP : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , ipaddr_string ( ndo , tptr + 2 ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_RT_2 : case BGP_EXT_COM_RO_2 : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr + 2 ) ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_LINKBAND : bw . i = EXTRACT_32BITS ( tptr + 2 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case BGP_EXT_COM_VPN_ORIGIN : case BGP_EXT_COM_VPN_ORIGIN2 : case BGP_EXT_COM_VPN_ORIGIN3 : case BGP_EXT_COM_VPN_ORIGIN4 : case BGP_EXT_COM_OSPF_RID : case BGP_EXT_COM_OSPF_RID2 : ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr + 2 ) ) ) ; break ; case BGP_EXT_COM_OSPF_RTYPE : case BGP_EXT_COM_OSPF_RTYPE2 : ND_PRINT ( ( ndo , \":<S2SV_blank>area:%s,<S2SV_blank>router-type:%s,<S2SV_blank>metric-type:%s%s\" , ipaddr_string ( ndo , tptr + 2 ) , tok2str ( bgp_extd_comm_ospf_rtype_values , \"unknown<S2SV_blank>(0x%02x)\" , * ( tptr + 6 ) ) , ( * ( tptr + 7 ) & BGP_OSPF_RTYPE_METRIC_TYPE ) ? \"E2\" : \"\" , ( ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_EXT ) || ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_NSSA ) ) ? \"E1\" : \"\" ) ) ; break ; case BGP_EXT_COM_L2INFO : ND_PRINT ( ( ndo , \":<S2SV_blank>%s<S2SV_blank>Control<S2SV_blank>Flags<S2SV_blank>[0x%02x]:MTU<S2SV_blank>%u\" , tok2str ( l2vpn_encaps_values , \"unknown<S2SV_blank>encaps\" , * ( tptr + 2 ) ) , * ( tptr + 3 ) , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_SOURCE_AS : ND_PRINT ( ( ndo , \":<S2SV_blank>AS<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 2 ) ) ) ; break ; default : ND_TCHECK2 ( * tptr , 8 ) ; print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , 8 ) ; break ; } tlen -= 8 ; tptr += 8 ; } break ; case BGPTYPE_PMSI_TUNNEL : { uint8_t tunnel_type , flags ; <S2SV_StartBug> tunnel_type = * ( tptr + 1 ) ; <S2SV_EndBug> flags = * tptr ; <S2SV_StartBug> tlen = len ; <S2SV_EndBug> ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>MPLS<S2SV_blank>Label<S2SV_blank>%u\" , tok2str ( bgp_pmsi_tunnel_values , \"Unknown\" , tunnel_type ) , tunnel_type , bittok2str ( bgp_pmsi_flag_values , \"none\" , flags ) , EXTRACT_24BITS ( tptr + 2 ) >> 4 ) ) ; tptr += 5 ; tlen -= 5 ; switch ( tunnel_type ) { case BGP_PMSI_TUNNEL_PIM_SM : case BGP_PMSI_TUNNEL_PIM_BIDIR : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sender<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_PIM_SSM : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_INGRESS : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-Endpoint<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGP_PMSI_TUNNEL_LDP_P2MP : case BGP_PMSI_TUNNEL_LDP_MP2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>LSP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_RSVP_P2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended-Tunnel-ID<S2SV_blank>%s,<S2SV_blank>P2MP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; } } break ; } case BGPTYPE_AIGP : { uint8_t type ; uint16_t length ; tlen = len ; while ( tlen >= 3 ) { ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; type = * tptr ; length = EXTRACT_16BITS ( tptr + 1 ) ; tptr += 3 ; tlen -= 3 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( bgp_aigp_values , \"Unknown\" , type ) , type , length ) ) ; if ( length < 3 ) goto trunc ; length -= 3 ; ND_TCHECK2 ( tptr [ 3 ] , length ) ; switch ( type ) { case BGP_AIGP_TLV : if ( length < 8 ) goto trunc ; ND_PRINT ( ( ndo , \",<S2SV_blank>metric<S2SV_blank>%\" PRIu64 , EXTRACT_64BITS ( tptr ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length ) ; } } tptr += length ; tlen -= length ; } break ; } case BGPTYPE_ATTR_SET : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Origin<S2SV_blank>AS:<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) ) ) ; tptr += 4 ; len -= 4 ; while ( len ) { u_int aflags , alenlen , alen ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; if ( len < 2 ) goto trunc ; aflags = * tptr ; atype = * ( tptr + 1 ) ; tptr += 2 ; len -= 2 ; alenlen = bgp_attr_lenlen ( aflags , tptr ) ; ND_TCHECK2 ( tptr [ 0 ] , alenlen ) ; if ( len < alenlen ) goto trunc ; alen = bgp_attr_len ( aflags , tptr ) ; tptr += alenlen ; len -= alenlen ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_attr_values , \"Unknown<S2SV_blank>Attribute\" , atype ) , atype , alen ) ) ; if ( aflags ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s%s%s%s\" , aflags & 0x80 ? \"O\" : \"\" , aflags & 0x40 ? \"T\" : \"\" , aflags & 0x20 ? \"P\" : \"\" , aflags & 0x10 ? \"E\" : \"\" ) ) ; if ( aflags & 0xf ) ND_PRINT ( ( ndo , \"+%x\" , aflags & 0xf ) ) ; ND_PRINT ( ( ndo , \"]:<S2SV_blank>\" ) ) ; } if ( ! bgp_attr_print ( ndo , atype , tptr , alen ) ) return 0 ; tptr += alen ; len -= alen ; } break ; case BGPTYPE_LARGE_COMMUNITY : if ( len == 0 || len % 12 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; while ( len > 0 ) { ND_TCHECK2 ( * tptr , 12 ) ; ND_PRINT ( ( ndo , \"%u:%u:%u%s\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , ( len > 12 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tptr += 12 ; len -= 12 ; } break ; default : ND_TCHECK2 ( * pptr , len ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>Attribute<S2SV_blank>%u<S2SV_blank>decoder\" , atype ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; break ; } if ( ndo -> ndo_vflag > 1 && len ) { ND_TCHECK2 ( * pptr , len ) ; print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; } return 1 ; trunc : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , flags ; ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; <S2SV_ModStart> tlen = len <S2SV_ModEnd> ; ND_PRINT (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18222\n\n```\nCWE-119 static int hns_gmac_get_sset_count ( int stringset ) { <S2SV_StartBug> if ( stringset == ETH_SS_STATS ) <S2SV_EndBug> return ARRAY_SIZE ( g_gmac_stats_string ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stringset == ETH_SS_STATS || stringset == ETH_SS_PRIV_FLAGS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14976\n\n```\nCWE-200 int parse_config ( char * filename , bridge_t * * bridges ) { dictionary * ubridge_config = NULL ; const char * value ; const char * bridge_name ; int i , nsec ; <S2SV_StartBug> if ( ( ubridge_config = iniparser_load ( filename ) ) == NULL ) { <S2SV_EndBug> return FALSE ; } nsec = iniparser_getnsec ( ubridge_config ) ; for ( i = 0 ; i < nsec ; i ++ ) { bridge_t * bridge ; nio_t * source_nio = NULL ; nio_t * destination_nio = NULL ; bridge_name = iniparser_getsecname ( ubridge_config , i ) ; printf ( \"Parsing<S2SV_blank>%s\\\\n\" , bridge_name ) ; if ( getstr ( ubridge_config , bridge_name , \"source_udp\" , & value ) ) source_nio = create_udp_tunnel ( value ) ; else if ( getstr ( ubridge_config , bridge_name , \"source_unix\" , & value ) ) source_nio = create_unix_socket ( value ) ; else if ( getstr ( ubridge_config , bridge_name , \"source_ethernet\" , & value ) ) source_nio = open_ethernet_device ( value ) ; else if ( getstr ( ubridge_config , bridge_name , \"source_tap\" , & value ) ) source_nio = open_tap_device ( value ) ; # ifdef LINUX_RAW else if ( getstr ( ubridge_config , bridge_name , \"source_linux_raw\" , & value ) ) source_nio = open_linux_raw ( value ) ; # endif # ifdef __APPLE__ else if ( getstr ( ubridge_config , bridge_name , \"source_fusion_vmnet\" , & value ) ) source_nio = open_fusion_vmnet ( value ) ; # endif else fprintf ( stderr , \"source<S2SV_blank>NIO<S2SV_blank>not<S2SV_blank>found\\\\n\" ) ; if ( getstr ( ubridge_config , bridge_name , \"destination_udp\" , & value ) ) destination_nio = create_udp_tunnel ( value ) ; else if ( getstr ( ubridge_config , bridge_name , \"destination_unix\" , & value ) ) destination_nio = create_unix_socket ( value ) ; else if ( getstr ( ubridge_config , bridge_name , \"destination_ethernet\" , & value ) ) destination_nio = open_ethernet_device ( value ) ; else if ( getstr ( ubridge_config , bridge_name , \"destination_tap\" , & value ) ) destination_nio = open_tap_device ( value ) ; # ifdef LINUX_RAW else if ( getstr ( ubridge_config , bridge_name , \"destination_linux_raw\" , & value ) ) source_nio = open_linux_raw ( value ) ; # endif # ifdef __APPLE__ else if ( getstr ( ubridge_config , bridge_name , \"destination_fusion_vmnet\" , & value ) ) destination_nio = open_fusion_vmnet ( value ) ; # endif else fprintf ( stderr , \"destination<S2SV_blank>NIO<S2SV_blank>not<S2SV_blank>found\\\\n\" ) ; if ( source_nio && destination_nio ) { bridge = add_bridge ( bridges ) ; bridge -> source_nio = source_nio ; bridge -> destination_nio = destination_nio ; if ( ! ( bridge -> name = strdup ( bridge_name ) ) ) { fprintf ( stderr , \"bridge<S2SV_blank>creation:<S2SV_blank>insufficient<S2SV_blank>memory\\\\n\" ) ; return FALSE ; } parse_capture ( ubridge_config , bridge_name , bridge ) ; parse_filter ( ubridge_config , bridge_name , bridge ) ; } else if ( source_nio != NULL ) free_nio ( source_nio ) ; else if ( destination_nio != NULL ) free_nio ( destination_nio ) ; } iniparser_freedict ( ubridge_config ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iniparser_load ( filename , HIDE_ERRORED_LINE_CONTENT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10070\n\n```\nCWE-125 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; register Quantum * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } clone_info = CloneImageInfo ( image_info ) ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) MATLAB_KO : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = DecompressBlock ( image , MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) continue ; MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; ( void ) ReadBlobXXXLong ( image2 ) ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; break ; default : ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { image -> type = GrayscaleType ; SetImageColorspace ( image , GRAYColorspace , exception ) ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( image , q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; <S2SV_StartBug> ExitLoop : <S2SV_EndBug> if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( image , ( double * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( image , ( float * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image , exception ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( ( image2 != NULL ) && ( image2 != image ) ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } } clone_info = DestroyImageInfo ( clone_info ) ; RelinquishMagickMemory ( BImgBuff ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4326\n\n```\nCWE-399 static struct sk_buff * udp6_ufo_fragment ( struct sk_buff * skb , u32 features ) { struct sk_buff * segs = ERR_PTR ( - EINVAL ) ; unsigned int mss ; unsigned int unfrag_ip6hlen , unfrag_len ; struct frag_hdr * fptr ; u8 * mac_start , * prevhdr ; u8 nexthdr ; u8 frag_hdr_sz = sizeof ( struct frag_hdr ) ; int offset ; __wsum csum ; mss = skb_shinfo ( skb ) -> gso_size ; if ( unlikely ( skb -> len <= mss ) ) goto out ; if ( skb_gso_ok ( skb , features | NETIF_F_GSO_ROBUST ) ) { int type = skb_shinfo ( skb ) -> gso_type ; if ( unlikely ( type & ~ ( SKB_GSO_UDP | SKB_GSO_DODGY ) || ! ( type & ( SKB_GSO_UDP ) ) ) ) goto out ; skb_shinfo ( skb ) -> gso_segs = DIV_ROUND_UP ( skb -> len , mss ) ; segs = NULL ; goto out ; } offset = skb -> csum_start - skb_headroom ( skb ) ; csum = skb_checksum ( skb , offset , skb -> len - offset , 0 ) ; offset += skb -> csum_offset ; * ( __sum16 * ) ( skb -> data + offset ) = csum_fold ( csum ) ; skb -> ip_summed = CHECKSUM_NONE ; <S2SV_StartBug> if ( ( skb_headroom ( skb ) < frag_hdr_sz ) && <S2SV_EndBug> pskb_expand_head ( skb , frag_hdr_sz , 0 , GFP_ATOMIC ) ) goto out ; unfrag_ip6hlen = ip6_find_1stfragopt ( skb , & prevhdr ) ; nexthdr = * prevhdr ; * prevhdr = NEXTHDR_FRAGMENT ; unfrag_len = skb_network_header ( skb ) - skb_mac_header ( skb ) + unfrag_ip6hlen ; mac_start = skb_mac_header ( skb ) ; memmove ( mac_start - frag_hdr_sz , mac_start , unfrag_len ) ; skb -> mac_header -= frag_hdr_sz ; skb -> network_header -= frag_hdr_sz ; fptr = ( struct frag_hdr * ) ( skb_network_header ( skb ) + unfrag_ip6hlen ) ; fptr -> nexthdr = nexthdr ; fptr -> reserved = 0 ; ipv6_select_ident ( fptr ) ; segs = skb_segment ( skb , features ) ; out : return segs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( skb_mac_header <S2SV_ModEnd> ( skb ) <S2SV_ModStart> skb ) < skb -> head +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16347\n\n```\nCWE-787 static void WritePixels ( struct ngiflib_img * i , struct ngiflib_decode_context * context , const u8 * pixels , u16 n ) { u16 tocopy ; struct ngiflib_gif * p = i -> parent ; while ( n > 0 ) { tocopy = ( context -> Xtogo < n ) ? context -> Xtogo : n ; if ( ! i -> gce . transparent_flag ) { # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif ngiflib_memcpy ( context -> frbuff_p . p8 , pixels , tocopy ) ; pixels += tocopy ; context -> frbuff_p . p8 += tocopy ; # ifndef NGIFLIB_INDEXED_ONLY } else { int j ; for ( j = ( int ) tocopy ; j > 0 ; j -- ) { * ( context -> frbuff_p . p32 ++ ) = GifIndexToTrueColor ( i -> palette , * pixels ++ ) ; } } # endif } else { int j ; # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif for ( j = ( int ) tocopy ; j > 0 ; j -- ) { if ( * pixels != i -> gce . transparent_color ) * context -> frbuff_p . p8 = * pixels ; pixels ++ ; context -> frbuff_p . p8 ++ ; } # ifndef NGIFLIB_INDEXED_ONLY } else { for ( j = ( int ) tocopy ; j > 0 ; j -- ) { if ( * pixels != i -> gce . transparent_color ) { * context -> frbuff_p . p32 = GifIndexToTrueColor ( i -> palette , * pixels ) ; } pixels ++ ; context -> frbuff_p . p32 ++ ; } } # endif } context -> Xtogo -= tocopy ; if ( context -> Xtogo == 0 ) { # ifdef NGIFLIB_ENABLE_CALLBACKS if ( p -> line_cb ) p -> line_cb ( p , context -> line_p , context -> curY ) ; # endif context -> Xtogo = i -> width ; switch ( context -> pass ) { case 0 : context -> curY ++ ; break ; case 1 : context -> curY += 8 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 4 ; } break ; case 2 : context -> curY += 8 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 2 ; } break ; case 3 : context -> curY += 4 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 1 ; } break ; case 4 : context -> curY += 2 ; <S2SV_StartBug> break ; <S2SV_EndBug> } # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif # ifdef NGIFLIB_ENABLE_CALLBACKS context -> line_p . p8 = p -> frbuff . p8 + ( u32 ) context -> curY * p -> width ; context -> frbuff_p . p8 = context -> line_p . p8 + i -> posX ; # else context -> frbuff_p . p8 = p -> frbuff . p8 + ( u32 ) context -> curY * p -> width + i -> posX ; # endif # ifndef NGIFLIB_INDEXED_ONLY } else { # ifdef NGIFLIB_ENABLE_CALLBACKS context -> line_p . p32 = p -> frbuff . p32 + ( u32 ) context -> curY * p -> width ; context -> frbuff_p . p32 = context -> line_p . p32 + i -> posX ; # else context -> frbuff_p . p32 = p -> frbuff . p32 + ( u32 ) context -> curY * p -> width + i -> posX ; # endif } # endif } n -= tocopy ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += 8 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> += 8 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> += 4 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> ; break ; } while ( context -> pass > 0 && context -> pass < 4 && context -> curY >= p -> height ) { switch ( ++ context -> pass ) { case 2 : context -> curY = i -> posY + 4 ; break ; case 3 : context -> curY = i -> posY + 2 ; break ; case 4 : context -> curY = i -> posY + 1 ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum bit_in ( PG_FUNCTION_ARGS ) { char * input_string = PG_GETARG_CSTRING ( 0 ) ; # ifdef NOT_USED Oid typelem = PG_GETARG_OID ( 1 ) ; # endif int32 atttypmod = PG_GETARG_INT32 ( 2 ) ; VarBit * result ; char * sp ; bits8 * r ; int len , bitlen , slen ; bool bit_not_hex ; int bc ; bits8 x = 0 ; if ( input_string [ 0 ] == 'b' || input_string [ 0 ] == 'B' ) { bit_not_hex = true ; sp = input_string + 1 ; } else if ( input_string [ 0 ] == 'x' || input_string [ 0 ] == 'X' ) { bit_not_hex = false ; sp = input_string + 1 ; } else { bit_not_hex = true ; sp = input_string ; } slen = strlen ( sp ) ; if ( bit_not_hex ) bitlen = slen ; else <S2SV_StartBug> bitlen = slen * 4 ; <S2SV_EndBug> if ( atttypmod <= 0 ) atttypmod = bitlen ; else if ( bitlen != atttypmod ) ereport ( ERROR , ( errcode ( ERRCODE_STRING_DATA_LENGTH_MISMATCH ) , errmsg ( \"bit<S2SV_blank>string<S2SV_blank>length<S2SV_blank>%d<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>type<S2SV_blank>bit(%d)\" , bitlen , atttypmod ) ) ) ; len = VARBITTOTALLEN ( atttypmod ) ; result = ( VarBit * ) palloc0 ( len ) ; SET_VARSIZE ( result , len ) ; VARBITLEN ( result ) = atttypmod ; r = VARBITS ( result ) ; if ( bit_not_hex ) { x = HIGHBIT ; for ( ; * sp ; sp ++ ) { if ( * sp == '1' ) * r |= x ; else if ( * sp != '0' ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"\\\\\"%c\\\\\"<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>binary<S2SV_blank>digit\" , * sp ) ) ) ; x >>= 1 ; if ( x == 0 ) { x = HIGHBIT ; r ++ ; } } } else { for ( bc = 0 ; * sp ; sp ++ ) { if ( * sp >= '0' && * sp <= '9' ) x = ( bits8 ) ( * sp - '0' ) ; else if ( * sp >= 'A' && * sp <= 'F' ) x = ( bits8 ) ( * sp - 'A' ) + 10 ; else if ( * sp >= 'a' && * sp <= 'f' ) x = ( bits8 ) ( * sp - 'a' ) + 10 ; else ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"\\\\\"%c\\\\\"<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>hexadecimal<S2SV_blank>digit\" , * sp ) ) ) ; if ( bc ) { * r ++ |= x ; bc = 0 ; } else { * r = x << 4 ; bc = 1 ; } } } PG_RETURN_VARBIT_P ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> slen ; else { if ( slen > VARBITMAXLEN / 4 ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"bit<S2SV_blank>string<S2SV_blank>length<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , VARBITMAXLEN ) ) ) ; <S2SV_ModStart> * 4 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 <S2SV_StartBug> int udf_get_filename ( struct super_block * sb , uint8_t * sname , uint8_t * dname , <S2SV_EndBug> <S2SV_StartBug> int flen ) <S2SV_EndBug> { struct ustr * filename , * unifilename ; int len = 0 ; filename = kmalloc ( sizeof ( struct ustr ) , GFP_NOFS ) ; if ( ! filename ) return 0 ; unifilename = kmalloc ( sizeof ( struct ustr ) , GFP_NOFS ) ; if ( ! unifilename ) goto out1 ; <S2SV_StartBug> if ( udf_build_ustr_exact ( unifilename , sname , flen ) ) <S2SV_EndBug> goto out2 ; if ( UDF_QUERY_FLAG ( sb , UDF_FLAG_UTF8 ) ) { if ( ! udf_CS0toUTF8 ( filename , unifilename ) ) { udf_debug ( \"Failed<S2SV_blank>in<S2SV_blank>udf_get_filename:<S2SV_blank>sname<S2SV_blank>=<S2SV_blank>%s\\\\n\" , sname ) ; goto out2 ; } } else if ( UDF_QUERY_FLAG ( sb , UDF_FLAG_NLS_MAP ) ) { if ( ! udf_CS0toNLS ( UDF_SB ( sb ) -> s_nls_map , filename , unifilename ) ) { udf_debug ( \"Failed<S2SV_blank>in<S2SV_blank>udf_get_filename:<S2SV_blank>sname<S2SV_blank>=<S2SV_blank>%s\\\\n\" , sname ) ; goto out2 ; } } else goto out2 ; <S2SV_StartBug> len = udf_translate_to_linux ( dname , filename -> u_name , filename -> u_len , <S2SV_EndBug> unifilename -> u_name , unifilename -> u_len ) ; out2 : kfree ( unifilename ) ; out1 : kfree ( filename ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * sname , int slen , <S2SV_ModStart> * dname , int dlen <S2SV_ModEnd> ) { struct <S2SV_ModStart> , sname , slen <S2SV_ModEnd> ) ) goto <S2SV_ModStart> ( dname , dlen ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11089\n\n```\nCWE-125 static UINT serial_process_irp_create ( SERIAL_DEVICE * serial , IRP * irp ) { DWORD DesiredAccess ; DWORD SharedAccess ; DWORD CreateDisposition ; UINT32 PathLength ; if ( Stream_GetRemainingLength ( irp -> input ) < 32 ) return ERROR_INVALID_DATA ; Stream_Read_UINT32 ( irp -> input , DesiredAccess ) ; Stream_Seek_UINT64 ( irp -> input ) ; Stream_Seek_UINT32 ( irp -> input ) ; Stream_Read_UINT32 ( irp -> input , SharedAccess ) ; Stream_Read_UINT32 ( irp -> input , CreateDisposition ) ; Stream_Seek_UINT32 ( irp -> input ) ; Stream_Read_UINT32 ( irp -> input , PathLength ) ; <S2SV_StartBug> if ( Stream_GetRemainingLength ( irp -> input ) < PathLength ) <S2SV_EndBug> <S2SV_StartBug> return ERROR_INVALID_DATA ; <S2SV_EndBug> Stream_Seek ( irp -> input , PathLength ) ; assert ( PathLength == 0 ) ; # ifndef _WIN32 WLog_Print ( serial -> log , WLOG_DEBUG , \"DesiredAccess:<S2SV_blank>0x%\" PRIX32 \",<S2SV_blank>SharedAccess:<S2SV_blank>0x%\" PRIX32 \",<S2SV_blank>CreateDisposition:<S2SV_blank>0x%\" PRIX32 \"\" , DesiredAccess , SharedAccess , CreateDisposition ) ; DesiredAccess = GENERIC_READ | GENERIC_WRITE ; SharedAccess = 0 ; CreateDisposition = OPEN_EXISTING ; # endif serial -> hComm = CreateFile ( serial -> device . name , DesiredAccess , SharedAccess , NULL , CreateDisposition , 0 , NULL ) ; if ( ! serial -> hComm || ( serial -> hComm == INVALID_HANDLE_VALUE ) ) { WLog_Print ( serial -> log , WLOG_WARN , \"CreateFile<S2SV_blank>failure:<S2SV_blank>%s<S2SV_blank>last-error:<S2SV_blank>0x%08\" PRIX32 \"\" , serial -> device . name , GetLastError ( ) ) ; irp -> IoStatus = STATUS_UNSUCCESSFUL ; goto error_handle ; } _comm_setServerSerialDriver ( serial -> hComm , serial -> ServerSerialDriverId ) ; _comm_set_permissive ( serial -> hComm , serial -> permissive ) ; assert ( irp -> FileId == 0 ) ; irp -> FileId = irp -> devman -> id_sequence ++ ; irp -> IoStatus = STATUS_SUCCESS ; WLog_Print ( serial -> log , WLOG_DEBUG , \"%s<S2SV_blank>(DeviceId:<S2SV_blank>%\" PRIu32 \",<S2SV_blank>FileId:<S2SV_blank>%\" PRIu32 \")<S2SV_blank>created.\" , serial -> device . name , irp -> device -> id , irp -> FileId ) ; error_handle : Stream_Write_UINT32 ( irp -> output , irp -> FileId ) ; Stream_Write_UINT8 ( irp -> output , 0 ) ; return CHANNEL_RC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! Stream_SafeSeek ( irp -> input , PathLength ) <S2SV_ModEnd> ) return ERROR_INVALID_DATA <S2SV_ModStart> ) return ERROR_INVALID_DATA <S2SV_ModEnd> ; assert (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12996\n\n```\nCWE-125 static void pimv2_print ( netdissect_options * ndo , register const u_char * bp , register u_int len , const u_char * bp2 ) { register const u_char * ep ; register const struct pim * pim = ( const struct pim * ) bp ; int advance ; enum checksum_status cksum_status ; ep = ( const u_char * ) ndo -> ndo_snapend ; if ( bp >= ep ) return ; if ( ep > bp + len ) ep = bp + len ; ND_TCHECK ( pim -> pim_rsv ) ; pimv2_addr_len = pim -> pim_rsv ; if ( pimv2_addr_len != 0 ) ND_PRINT ( ( ndo , \",<S2SV_blank>RFC2117-encoding\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>cksum<S2SV_blank>0x%04x<S2SV_blank>\" , EXTRACT_16BITS ( & pim -> pim_cksum ) ) ) ; if ( EXTRACT_16BITS ( & pim -> pim_cksum ) == 0 ) { ND_PRINT ( ( ndo , \"(unverified)\" ) ) ; } else { if ( PIM_TYPE ( pim -> pim_typever ) == PIMV2_TYPE_REGISTER ) { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , 8 ) ; if ( cksum_status == INCORRECT ) { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , len ) ; } } else { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , len ) ; } switch ( cksum_status ) { case CORRECT : ND_PRINT ( ( ndo , \"(correct)\" ) ) ; break ; case INCORRECT : ND_PRINT ( ( ndo , \"(incorrect)\" ) ) ; break ; case UNVERIFIED : ND_PRINT ( ( ndo , \"(unverified)\" ) ) ; break ; } } switch ( PIM_TYPE ( pim -> pim_typever ) ) { case PIMV2_TYPE_HELLO : { uint16_t otype , olen ; bp += 4 ; while ( bp < ep ) { ND_TCHECK2 ( bp [ 0 ] , 4 ) ; otype = EXTRACT_16BITS ( & bp [ 0 ] ) ; olen = EXTRACT_16BITS ( & bp [ 2 ] ) ; ND_TCHECK2 ( bp [ 0 ] , 4 + olen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>Value:<S2SV_blank>\" , tok2str ( pimv2_hello_option_values , \"Unknown\" , otype ) , otype , olen ) ) ; bp += 4 ; switch ( otype ) { case PIMV2_HELLO_OPTION_HOLDTIME : <S2SV_StartBug> unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; <S2SV_EndBug> break ; case PIMV2_HELLO_OPTION_LANPRUNEDELAY : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { char t_bit ; uint16_t lan_delay , override_interval ; lan_delay = EXTRACT_16BITS ( bp ) ; override_interval = EXTRACT_16BITS ( bp + 2 ) ; t_bit = ( lan_delay & 0x8000 ) ? 1 : 0 ; lan_delay &= ~ 0x8000 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>T-bit=%d,<S2SV_blank>LAN<S2SV_blank>delay<S2SV_blank>%dms,<S2SV_blank>Override<S2SV_blank>interval<S2SV_blank>%dms\" , t_bit , lan_delay , override_interval ) ) ; } break ; case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD : case PIMV2_HELLO_OPTION_DR_PRIORITY : switch ( olen ) { case 0 : ND_PRINT ( ( ndo , \"Bi-Directional<S2SV_blank>Capability<S2SV_blank>(Old)\" ) ) ; break ; case 4 : ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( bp ) ) ) ; break ; default : ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; break ; } break ; case PIMV2_HELLO_OPTION_GENID : <S2SV_StartBug> ND_PRINT ( ( ndo , \"0x%08x\" , EXTRACT_32BITS ( bp ) ) ) ; <S2SV_EndBug> break ; case PIMV2_HELLO_OPTION_REFRESH_CAP : <S2SV_StartBug> ND_PRINT ( ( ndo , \"v%d\" , * bp ) ) ; <S2SV_EndBug> if ( * ( bp + 1 ) != 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>interval<S2SV_blank>\" ) ) ; unsigned_relts_print ( ndo , * ( bp + 1 ) ) ; } if ( EXTRACT_16BITS ( bp + 2 ) != 0 ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>?0x%04x?\" , EXTRACT_16BITS ( bp + 2 ) ) ) ; <S2SV_EndBug> } break ; case PIMV2_HELLO_OPTION_BIDIR_CAP : break ; case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD : case PIMV2_HELLO_OPTION_ADDRESS_LIST : if ( ndo -> ndo_vflag > 1 ) { const u_char * ptr = bp ; while ( ptr < ( bp + olen ) ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; advance = pimv2_addr_print ( ndo , ptr , pimv2_unicast , 0 ) ; if ( advance < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } ptr += advance ; } } break ; default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , olen ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , olen ) ; bp += olen ; } break ; } case PIMV2_TYPE_REGISTER : { const struct ip * ip ; ND_TCHECK2 ( * ( bp + 4 ) , PIMV2_REGISTER_FLAG_LEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[<S2SV_blank>%s<S2SV_blank>]\\\\n\\\\t\" , tok2str ( pimv2_register_flag_values , \"none\" , EXTRACT_32BITS ( bp + 4 ) ) ) ) ; bp += 8 ; len -= 8 ; ip = ( const struct ip * ) bp ; switch ( IP_V ( ip ) ) { case 0 : ND_PRINT ( ( ndo , \"IP-Null-header<S2SV_blank>%s<S2SV_blank>><S2SV_blank>%s\" , ipaddr_string ( ndo , & ip -> ip_src ) , ipaddr_string ( ndo , & ip -> ip_dst ) ) ) ; break ; case 4 : ip_print ( ndo , bp , len ) ; break ; case 6 : ip6_print ( ndo , bp , len ) ; break ; default : ND_PRINT ( ( ndo , \"IP<S2SV_blank>ver<S2SV_blank>%d\" , IP_V ( ip ) ) ) ; break ; } break ; } case PIMV2_TYPE_REGISTER_STOP : bp += 4 ; len -= 4 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>group=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>source=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; break ; case PIMV2_TYPE_JOIN_PRUNE : case PIMV2_TYPE_GRAFT : case PIMV2_TYPE_GRAFT_ACK : { uint8_t ngroup ; uint16_t holdtime ; uint16_t njoin ; uint16_t nprune ; int i , j ; bp += 4 ; len -= 4 ; if ( PIM_TYPE ( pim -> pim_typever ) != 7 ) { if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \",<S2SV_blank>upstream-neighbor:<S2SV_blank>\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; } if ( bp + 4 > ep ) break ; ngroup = bp [ 1 ] ; holdtime = EXTRACT_16BITS ( & bp [ 2 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%u<S2SV_blank>group(s)\" , ngroup ) ) ; if ( PIM_TYPE ( pim -> pim_typever ) != 7 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>holdtime:<S2SV_blank>\" ) ) ; if ( holdtime == 0xffff ) ND_PRINT ( ( ndo , \"infinite\" ) ) ; else unsigned_relts_print ( ndo , holdtime ) ; } bp += 4 ; len -= 4 ; for ( i = 0 ; i < ngroup ; i ++ ) { if ( bp >= ep ) goto jp_done ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>group<S2SV_blank>#%u:<S2SV_blank>\" , i + 1 ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; if ( bp + 4 > ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } njoin = EXTRACT_16BITS ( & bp [ 0 ] ) ; nprune = EXTRACT_16BITS ( & bp [ 2 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>joined<S2SV_blank>sources:<S2SV_blank>%u,<S2SV_blank>pruned<S2SV_blank>sources:<S2SV_blank>%u\" , njoin , nprune ) ) ; bp += 4 ; len -= 4 ; for ( j = 0 ; j < njoin ; j ++ ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>joined<S2SV_blank>source<S2SV_blank>#%u:<S2SV_blank>\" , j + 1 ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_source , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; } for ( j = 0 ; j < nprune ; j ++ ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>pruned<S2SV_blank>source<S2SV_blank>#%u:<S2SV_blank>\" , j + 1 ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_source , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; } } jp_done : break ; } case PIMV2_TYPE_BOOTSTRAP : { int i , j , frpcnt ; bp += 4 ; if ( bp + sizeof ( uint16_t ) >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>tag=%x\" , EXTRACT_16BITS ( bp ) ) ) ; bp += sizeof ( uint16_t ) ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>hashmlen=%d\" , bp [ 0 ] ) ) ; if ( bp + 1 >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>BSRprio=%d\" , bp [ 1 ] ) ) ; bp += 2 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>BSR=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; for ( i = 0 ; bp < ep ; i ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(group%d:<S2SV_blank>\" , i ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } bp += advance ; if ( bp >= ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \"<S2SV_blank>RPcnt=%d\" , bp [ 0 ] ) ) ; if ( bp + 1 >= ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \"<S2SV_blank>FRPcnt=%d\" , frpcnt = bp [ 1 ] ) ) ; bp += 4 ; for ( j = 0 ; j < frpcnt && bp < ep ; j ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>RP%d=\" , j ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } bp += advance ; if ( bp + 1 >= ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \",holdtime=\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; if ( bp + 2 >= ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \",prio=%d\" , bp [ 2 ] ) ) ; bp += 4 ; } ND_PRINT ( ( ndo , \")\" ) ) ; } bs_done : break ; } case PIMV2_TYPE_ASSERT : bp += 4 ; len -= 4 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>group=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>src=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; if ( bp + 8 > ep ) break ; if ( bp [ 0 ] & 0x80 ) ND_PRINT ( ( ndo , \"<S2SV_blank>RPT\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pref=%u\" , EXTRACT_32BITS ( & bp [ 0 ] ) & 0x7fffffff ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>metric=%u\" , EXTRACT_32BITS ( & bp [ 4 ] ) ) ) ; break ; case PIMV2_TYPE_CANDIDATE_RP : { int i , pfxcnt ; bp += 4 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>prefix-cnt=%d\" , bp [ 0 ] ) ) ; pfxcnt = bp [ 0 ] ; if ( bp + 1 >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>prio=%d\" , bp [ 1 ] ) ) ; if ( bp + 3 >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>holdtime=\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( & bp [ 2 ] ) ) ; bp += 4 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>RP=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; for ( i = 0 ; i < pfxcnt && bp < ep ; i ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>Group%d=\" , i ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; } break ; } case PIMV2_TYPE_PRUNE_REFRESH : ND_PRINT ( ( ndo , \"<S2SV_blank>src=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; ND_PRINT ( ( ndo , \"<S2SV_blank>grp=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; ND_PRINT ( ( ndo , \"<S2SV_blank>forwarder=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; ND_TCHECK2 ( bp [ 0 ] , 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>TUNR<S2SV_blank>\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>[type<S2SV_blank>%d]\" , PIM_TYPE ( pim -> pim_typever ) ) ) ; break ; } return ; trunc : ND_PRINT ( ( ndo , \"[|pim]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case PIMV2_HELLO_OPTION_HOLDTIME : if ( olen != 2 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>2<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { <S2SV_ModStart> ) ) ; } <S2SV_ModStart> case PIMV2_HELLO_OPTION_GENID : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { <S2SV_ModStart> ) ) ; } <S2SV_ModStart> case PIMV2_HELLO_OPTION_REFRESH_CAP : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-27815\n\n```\nCWE-476 static const char * escape_xml ( const char * text ) { static char * escaped ; static size_t escaped_size ; char * out ; size_t len ; <S2SV_StartBug> if ( ! strlen ( text ) ) return \"empty<S2SV_blank>string\" ; <S2SV_EndBug> for ( out = escaped , len = 0 ; * text ; ++ len , ++ out , ++ text ) { if ( ( len + 8 ) > escaped_size ) { char * bigger_escaped ; escaped_size += 128 ; bigger_escaped = realloc ( escaped , escaped_size ) ; if ( ! bigger_escaped ) { free ( escaped ) ; escaped = NULL ; escaped_size = 0 ; return \">>><S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank><<<\" ; } out = bigger_escaped + len ; escaped = bigger_escaped ; } switch ( * text ) { case '&' : strcpy ( out , \"&amp;\" ) ; len += strlen ( out ) - 1 ; out = escaped + len ; break ; case '<' : strcpy ( out , \"&lt;\" ) ; len += strlen ( out ) - 1 ; out = escaped + len ; break ; case '>' : strcpy ( out , \"&gt;\" ) ; len += strlen ( out ) - 1 ; out = escaped + len ; break ; default : * out = * text ; break ; } } * out = '\\\\x0' ; return escaped ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) return \"\" <S2SV_ModEnd> ; for (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int handle_keywordonly_args ( struct compiling * c , const node * n , int start , asdl_seq * kwonlyargs , asdl_seq * kwdefaults ) { PyObject * argname ; node * ch ; expr_ty expression , annotation ; arg_ty arg ; int i = start ; int j = 0 ; if ( kwonlyargs == NULL ) { ast_error ( c , CHILD ( n , start ) , \"named<S2SV_blank>arguments<S2SV_blank>must<S2SV_blank>follow<S2SV_blank>bare<S2SV_blank>*\" ) ; return - 1 ; } assert ( kwdefaults != NULL ) ; while ( i < NCH ( n ) ) { ch = CHILD ( n , i ) ; switch ( TYPE ( ch ) ) { case vfpdef : case tfpdef : if ( i + 1 < NCH ( n ) && TYPE ( CHILD ( n , i + 1 ) ) == EQUAL ) { expression = ast_for_expr ( c , CHILD ( n , i + 2 ) ) ; if ( ! expression ) goto error ; asdl_seq_SET ( kwdefaults , j , expression ) ; i += 2 ; } else { asdl_seq_SET ( kwdefaults , j , NULL ) ; } if ( NCH ( ch ) == 3 ) { annotation = ast_for_expr ( c , CHILD ( ch , 2 ) ) ; if ( ! annotation ) goto error ; } else { annotation = NULL ; } ch = CHILD ( ch , 0 ) ; argname = NEW_IDENTIFIER ( ch ) ; if ( ! argname ) goto error ; if ( forbidden_name ( c , argname , ch , 0 ) ) goto error ; <S2SV_StartBug> arg = arg ( argname , annotation , LINENO ( ch ) , ch -> n_col_offset , <S2SV_EndBug> ch -> n_end_lineno , ch -> n_end_col_offset , c -> c_arena ) ; if ( ! arg ) goto error ; asdl_seq_SET ( kwonlyargs , j ++ , arg ) ; <S2SV_StartBug> i += 2 ; <S2SV_EndBug> break ; case DOUBLESTAR : return i ; default : ast_error ( c , ch , \"unexpected<S2SV_blank>node\" ) ; goto error ; } } return i ; error : return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , annotation , NULL , <S2SV_ModStart> ; i += 1 ; if ( TYPE ( CHILD ( n , i ) ) == COMMA ) i += 1 ; break ; case TYPE_COMMENT : arg -> type_comment = NEW_TYPE_COMMENT ( ch ) ; if ( ! arg -> type_comment ) goto error ; i += 1 <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0217\n\n```\nCWE-399 static void xen_netbk_tx_submit ( struct xen_netbk * netbk ) { struct gnttab_copy * gop = netbk -> tx_copy_ops ; struct sk_buff * skb ; while ( ( skb = __skb_dequeue ( & netbk -> tx_queue ) ) != NULL ) { struct xen_netif_tx_request * txp ; struct xenvif * vif ; u16 pending_idx ; unsigned data_len ; pending_idx = * ( ( u16 * ) skb -> data ) ; vif = netbk -> pending_tx_info [ pending_idx ] . vif ; txp = & netbk -> pending_tx_info [ pending_idx ] . req ; if ( unlikely ( xen_netbk_tx_check_gop ( netbk , skb , & gop ) ) ) { netdev_dbg ( vif -> dev , \"netback<S2SV_blank>grant<S2SV_blank>failed.\\\\n\" ) ; skb_shinfo ( skb ) -> nr_frags = 0 ; kfree_skb ( skb ) ; continue ; } data_len = skb -> len ; memcpy ( skb -> data , ( void * ) ( idx_to_kaddr ( netbk , pending_idx ) | txp -> offset ) , data_len ) ; if ( data_len < txp -> size ) { txp -> offset += data_len ; txp -> size -= data_len ; } else { <S2SV_StartBug> xen_netbk_idx_release ( netbk , pending_idx ) ; <S2SV_EndBug> } if ( txp -> flags & XEN_NETTXF_csum_blank ) skb -> ip_summed = CHECKSUM_PARTIAL ; else if ( txp -> flags & XEN_NETTXF_data_validated ) skb -> ip_summed = CHECKSUM_UNNECESSARY ; xen_netbk_fill_frags ( netbk , skb ) ; if ( skb_headlen ( skb ) < PKT_PROT_LEN && skb_is_nonlinear ( skb ) ) { int target = min_t ( int , skb -> len , PKT_PROT_LEN ) ; __pskb_pull_tail ( skb , target - skb_headlen ( skb ) ) ; } skb -> dev = vif -> dev ; skb -> protocol = eth_type_trans ( skb , skb -> dev ) ; if ( checksum_setup ( vif , skb ) ) { netdev_dbg ( vif -> dev , \"Can\\'t<S2SV_blank>setup<S2SV_blank>checksum<S2SV_blank>in<S2SV_blank>net_tx_action\\\\n\" ) ; kfree_skb ( skb ) ; continue ; } vif -> dev -> stats . rx_bytes += skb -> len ; vif -> dev -> stats . rx_packets ++ ; xenvif_receive_skb ( vif , skb ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> netbk , pending_idx , XEN_NETIF_RSP_OKAY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10071\n\n```\nCWE-125 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; PixelPacket * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; size_t Unknown6 ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } clone_info = CloneImageInfo ( image_info ) ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) MATLAB_KO : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = DecompressBlock ( image , MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) continue ; MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; Unknown6 = ReadBlobXXXLong ( image2 ) ; ( void ) Unknown6 ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; break ; default : ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { SetImageColorspace ( image , GRAYColorspace ) ; image -> type = GrayscaleType ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } <S2SV_StartBug> BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( unsigned char ) ) ; <S2SV_EndBug> if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( ( double * ) BImgBuff , i , image , MinVal , MaxVal ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( ( float * ) BImgBuff , i , image , MinVal , MaxVal ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) unlink ( clone_info -> filename ) ; } } } } clone_info = DestroyImageInfo ( clone_info ) ; RelinquishMagickMemory ( BImgBuff ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , sizeof ( double <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15856\n\n```\nCWE-835 static enum rules_token lex ( struct scanner * s , union lvalue * val ) { skip_more_whitespace_and_comments : while ( is_space ( peek ( s ) ) ) if ( next ( s ) == '\\\\n' ) return TOK_END_OF_LINE ; if ( chr ( s , '#' ) ) { skip_to_eol ( s ) ; goto skip_more_whitespace_and_comments ; } if ( eof ( s ) ) return TOK_END_OF_FILE ; s -> token_line = s -> line ; s -> token_column = s -> column ; s -> buf_pos = 0 ; if ( chr ( s , '<' ) ) { <S2SV_StartBug> while ( peek ( s ) != '>' && ! eol ( s ) ) <S2SV_EndBug> buf_append ( s , next ( s ) ) ; if ( ! chr ( s , '>' ) ) { scanner_err ( s , \"unterminated<S2SV_blank>keysym<S2SV_blank>literal\" ) ; return TOK_ERROR ; } if ( ! buf_append ( s , '\\\\0' ) ) { scanner_err ( s , \"keysym<S2SV_blank>literal<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) ; return TOK_ERROR ; } val -> string . str = s -> buf ; val -> string . len = s -> buf_pos ; return TOK_LHS_KEYSYM ; } if ( chr ( s , ':' ) ) return TOK_COLON ; if ( chr ( s , '!' ) ) return TOK_BANG ; if ( chr ( s , '~' ) ) return TOK_TILDE ; if ( chr ( s , \\'\\\\\"\\' ) ) { while ( ! eof ( s ) && ! eol ( s ) && peek ( s ) != \\'\\\\\"\\' ) { if ( chr ( s , '\\\\\\\\' ) ) { uint8_t o ; if ( chr ( s , '\\\\\\\\' ) ) { buf_append ( s , '\\\\\\\\' ) ; } else if ( chr ( s , \\'\"\\' ) ) { buf_append ( s , \\'\"\\' ) ; } else if ( chr ( s , 'x' ) || chr ( s , 'X' ) ) { if ( hex ( s , & o ) ) buf_append ( s , ( char ) o ) ; else scanner_warn ( s , \"illegal<S2SV_blank>hexadecimal<S2SV_blank>escape<S2SV_blank>sequence<S2SV_blank>in<S2SV_blank>string<S2SV_blank>literal\" ) ; } else if ( oct ( s , & o ) ) { buf_append ( s , ( char ) o ) ; } else { scanner_warn ( s , \"unknown<S2SV_blank>escape<S2SV_blank>sequence<S2SV_blank>(%c)<S2SV_blank>in<S2SV_blank>string<S2SV_blank>literal\" , peek ( s ) ) ; } } else { buf_append ( s , next ( s ) ) ; } } if ( ! chr ( s , \\'\\\\\"\\' ) ) { scanner_err ( s , \"unterminated<S2SV_blank>string<S2SV_blank>literal\" ) ; return TOK_ERROR ; } if ( ! buf_append ( s , '\\\\0' ) ) { scanner_err ( s , \"string<S2SV_blank>literal<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) ; return TOK_ERROR ; } if ( ! is_valid_utf8 ( s -> buf , s -> buf_pos - 1 ) ) { scanner_err ( s , \"string<S2SV_blank>literal<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>UTF-8<S2SV_blank>string\" ) ; return TOK_ERROR ; } val -> string . str = s -> buf ; val -> string . len = s -> buf_pos ; return TOK_STRING ; } if ( is_alpha ( peek ( s ) ) || peek ( s ) == '_' ) { s -> buf_pos = 0 ; while ( is_alnum ( peek ( s ) ) || peek ( s ) == '_' ) buf_append ( s , next ( s ) ) ; if ( ! buf_append ( s , '\\\\0' ) ) { scanner_err ( s , \"identifier<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) ; return TOK_ERROR ; } if ( streq ( s -> buf , \"include\" ) ) return TOK_INCLUDE ; val -> string . str = s -> buf ; val -> string . len = s -> buf_pos ; return TOK_IDENT ; } skip_to_eol ( s ) ; scanner_err ( s , \"unrecognized<S2SV_blank>token\" ) ; return TOK_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( s ) && ! eof ( s )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11596\n\n```\nCWE-476 static void process_lru_command ( conn * c , token_t * tokens , const size_t ntokens ) { uint32_t pct_hot ; uint32_t pct_warm ; double hot_factor ; int32_t ttl ; double factor ; set_noreply_maybe ( c , tokens , ntokens ) ; if ( strcmp ( tokens [ 1 ] . value , \"tune\" ) == 0 && ntokens >= 7 ) { if ( ! safe_strtoul ( tokens [ 2 ] . value , & pct_hot ) || ! safe_strtoul ( tokens [ 3 ] . value , & pct_warm ) || ! safe_strtod ( tokens [ 4 ] . value , & hot_factor ) || ! safe_strtod ( tokens [ 5 ] . value , & factor ) ) { out_string ( c , \"ERROR\" ) ; } else { if ( pct_hot + pct_warm > 80 ) { out_string ( c , \"ERROR<S2SV_blank>hot<S2SV_blank>and<S2SV_blank>warm<S2SV_blank>pcts<S2SV_blank>must<S2SV_blank>not<S2SV_blank>exceed<S2SV_blank>80\" ) ; } else if ( factor <= 0 || hot_factor <= 0 ) { out_string ( c , \"ERROR<S2SV_blank>hot/warm<S2SV_blank>age<S2SV_blank>factors<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\" ) ; } else { settings . hot_lru_pct = pct_hot ; settings . warm_lru_pct = pct_warm ; settings . hot_max_factor = hot_factor ; settings . warm_max_factor = factor ; out_string ( c , \"OK\" ) ; } } <S2SV_StartBug> } else if ( strcmp ( tokens [ 1 ] . value , \"mode\" ) == 0 && ntokens >= 3 && <S2SV_EndBug> settings . lru_maintainer_thread ) { if ( strcmp ( tokens [ 2 ] . value , \"flat\" ) == 0 ) { settings . lru_segmented = false ; out_string ( c , \"OK\" ) ; } else if ( strcmp ( tokens [ 2 ] . value , \"segmented\" ) == 0 ) { settings . lru_segmented = true ; out_string ( c , \"OK\" ) ; } else { out_string ( c , \"ERROR\" ) ; } <S2SV_StartBug> } else if ( strcmp ( tokens [ 1 ] . value , \"temp_ttl\" ) == 0 && ntokens >= 3 && <S2SV_EndBug> settings . lru_maintainer_thread ) { if ( ! safe_strtol ( tokens [ 2 ] . value , & ttl ) ) { out_string ( c , \"ERROR\" ) ; } else { if ( ttl < 0 ) { settings . temp_lru = false ; } else { settings . temp_lru = true ; settings . temporary_ttl = ttl ; } out_string ( c , \"OK\" ) ; } } else { out_string ( c , \"ERROR\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && ntokens >= 4 <S2SV_ModEnd> && settings . <S2SV_ModStart> && ntokens >= 4 <S2SV_ModEnd> && settings .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_mbpost_proc_down_c ( unsigned char * dst , int pitch , int rows , int cols , int flimit ) { int r , c , i ; const short * rv3 = & vp8_rv [ 63 & rand ( ) ] ; for ( c = 0 ; c < cols ; c ++ ) { unsigned char * s = & dst [ c ] ; int sumsq = 0 ; int sum = 0 ; unsigned char d [ 16 ] ; const short * rv2 = rv3 + ( ( c * 17 ) & 127 ) ; for ( i = - 8 ; i < 0 ; i ++ ) s [ i * pitch ] = s [ 0 ] ; <S2SV_StartBug> for ( i = rows ; i < rows + 17 ; i ++ ) <S2SV_EndBug> s [ i * pitch ] = s [ ( rows - 1 ) * pitch ] ; for ( i = - 8 ; i <= 6 ; i ++ ) { sumsq += s [ i * pitch ] * s [ i * pitch ] ; sum += s [ i * pitch ] ; } for ( r = 0 ; r < rows + 8 ; r ++ ) { sumsq += s [ 7 * pitch ] * s [ 7 * pitch ] - s [ - 8 * pitch ] * s [ - 8 * pitch ] ; sum += s [ 7 * pitch ] - s [ - 8 * pitch ] ; d [ r & 15 ] = s [ 0 ] ; if ( sumsq * 15 - sum * sum < flimit ) { d [ r & 15 ] = ( rv2 [ r & 127 ] + sum + s [ 0 ] ) >> 4 ; } if ( r >= 8 ) s [ - 8 * pitch ] = d [ ( r - 8 ) & 15 ] ; s += pitch ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( i = 0 ; i < 17 ; i ++ ) s [ ( i + rows ) <S2SV_ModEnd> * pitch ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8970\n\n```\nCWE-295 static int int_x509_param_set_hosts ( X509_VERIFY_PARAM_ID * id , int mode , const char * name , size_t namelen ) { char * copy ; <S2SV_StartBug> if ( name && memchr ( name , '\\\\0' , namelen ) ) <S2SV_EndBug> return 0 ; if ( mode == SET_HOST && id -> hosts ) { string_stack_free ( id -> hosts ) ; id -> hosts = NULL ; } if ( name == NULL || namelen == 0 ) return 1 ; copy = strndup ( name , namelen ) ; if ( copy == NULL ) return 0 ; if ( id -> hosts == NULL && ( id -> hosts = sk_OPENSSL_STRING_new_null ( ) ) == NULL ) { free ( copy ) ; return 0 ; } if ( ! sk_OPENSSL_STRING_push ( id -> hosts , copy ) ) { free ( copy ) ; if ( sk_OPENSSL_STRING_num ( id -> hosts ) == 0 ) { sk_OPENSSL_STRING_free ( id -> hosts ) ; id -> hosts = NULL ; } return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( name != NULL && namelen == 0 ) namelen = strlen ( name ) ; if ( name\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17087\n\n```\nCWE-200 int readfile ( char_u * fname , char_u * sfname , linenr_T from , linenr_T lines_to_skip , linenr_T lines_to_read , exarg_T * eap , int flags ) { int fd = 0 ; int newfile = ( flags & READ_NEW ) ; int check_readonly ; int filtering = ( flags & READ_FILTER ) ; int read_stdin = ( flags & READ_STDIN ) ; int read_buffer = ( flags & READ_BUFFER ) ; int read_fifo = ( flags & READ_FIFO ) ; int set_options = newfile || read_buffer || ( eap != NULL && eap -> read_edit ) ; linenr_T read_buf_lnum = 1 ; colnr_T read_buf_col = 0 ; char_u c ; linenr_T lnum = from ; char_u * ptr = NULL ; char_u * buffer = NULL ; char_u * new_buffer = NULL ; char_u * line_start = NULL ; int wasempty ; colnr_T len ; long size = 0 ; char_u * p ; off_T filesize = 0 ; int skip_read = FALSE ; # ifdef FEAT_CRYPT char_u * cryptkey = NULL ; int did_ask_for_key = FALSE ; # endif # ifdef FEAT_PERSISTENT_UNDO context_sha256_T sha_ctx ; int read_undo_file = FALSE ; # endif int split = 0 ; # define UNKNOWN 0x0fffffff linenr_T linecnt ; int error = FALSE ; int ff_error = EOL_UNKNOWN ; long linerest = 0 ; # ifdef UNIX int perm = 0 ; int swap_mode = - 1 ; # else int perm ; # endif int fileformat = 0 ; int keep_fileformat = FALSE ; stat_T st ; int file_readonly ; linenr_T skip_count = 0 ; linenr_T read_count = 0 ; int msg_save = msg_scroll ; linenr_T read_no_eol_lnum = 0 ; int try_mac ; int try_dos ; int try_unix ; int file_rewind = FALSE ; # ifdef FEAT_MBYTE int can_retry ; linenr_T conv_error = 0 ; linenr_T illegal_byte = 0 ; int keep_dest_enc = FALSE ; int bad_char_behavior = BAD_REPLACE ; char_u * tmpname = NULL ; int fio_flags = 0 ; char_u * fenc ; int fenc_alloced ; char_u * fenc_next = NULL ; int advance_fenc = FALSE ; long real_size = 0 ; # ifdef USE_ICONV iconv_t iconv_fd = ( iconv_t ) - 1 ; # ifdef FEAT_EVAL int did_iconv = FALSE ; # endif # endif int converted = FALSE ; int notconverted = FALSE ; char_u conv_rest [ CONV_RESTLEN ] ; int conv_restlen = 0 ; # endif # ifdef FEAT_AUTOCMD buf_T * old_curbuf ; char_u * old_b_ffname ; char_u * old_b_fname ; int using_b_ffname ; int using_b_fname ; # endif # ifdef FEAT_AUTOCMD au_did_filetype = FALSE ; # endif curbuf -> b_no_eol_lnum = 0 ; if ( curbuf -> b_ffname == NULL && ! filtering && fname != NULL && vim_strchr ( p_cpo , CPO_FNAMER ) != NULL && ! ( flags & READ_DUMMY ) ) { if ( set_rw_fname ( fname , sfname ) == FAIL ) return FAIL ; } # ifdef FEAT_AUTOCMD old_curbuf = curbuf ; old_b_ffname = curbuf -> b_ffname ; old_b_fname = curbuf -> b_fname ; using_b_ffname = ( fname == curbuf -> b_ffname ) || ( sfname == curbuf -> b_ffname ) ; using_b_fname = ( fname == curbuf -> b_fname ) || ( sfname == curbuf -> b_fname ) ; # endif ex_no_reprint = TRUE ; need_fileinfo = FALSE ; if ( sfname == NULL ) sfname = fname ; # if defined ( UNIX ) fname = sfname ; # endif # ifdef FEAT_AUTOCMD if ( ! filtering && ! read_stdin && ! read_buffer ) { pos_T pos ; pos = curbuf -> b_op_start ; curbuf -> b_op_start . lnum = ( ( from == 0 ) ? 1 : from ) ; curbuf -> b_op_start . col = 0 ; if ( newfile ) { if ( apply_autocmds_exarg ( EVENT_BUFREADCMD , NULL , sfname , FALSE , curbuf , eap ) ) # ifdef FEAT_EVAL return aborting ( ) ? FAIL : OK ; # else return OK ; # endif } else if ( apply_autocmds_exarg ( EVENT_FILEREADCMD , sfname , sfname , FALSE , NULL , eap ) ) # ifdef FEAT_EVAL return aborting ( ) ? FAIL : OK ; # else return OK ; # endif curbuf -> b_op_start = pos ; } # endif if ( ( shortmess ( SHM_OVER ) || curbuf -> b_help ) && p_verbose == 0 ) msg_scroll = FALSE ; else msg_scroll = TRUE ; if ( fname != NULL && * fname != NUL ) { p = fname + STRLEN ( fname ) ; if ( after_pathsep ( fname , p ) || STRLEN ( fname ) >= MAXPATHL ) { filemess ( curbuf , fname , ( char_u * ) _ ( \"Illegal<S2SV_blank>file<S2SV_blank>name\" ) , 0 ) ; msg_end ( ) ; msg_scroll = msg_save ; return FAIL ; } } if ( ! read_stdin && ! read_buffer && ! read_fifo ) { # ifdef UNIX perm = mch_getperm ( fname ) ; if ( perm >= 0 && ! S_ISREG ( perm ) # ifdef S_ISFIFO && ! S_ISFIFO ( perm ) # endif # ifdef S_ISSOCK && ! S_ISSOCK ( perm ) # endif # ifdef OPEN_CHR_FILES && ! ( S_ISCHR ( perm ) && is_dev_fd_file ( fname ) ) # endif ) { int retval = FAIL ; if ( S_ISDIR ( perm ) ) { filemess ( curbuf , fname , ( char_u * ) _ ( \"is<S2SV_blank>a<S2SV_blank>directory\" ) , 0 ) ; retval = NOTDONE ; } else filemess ( curbuf , fname , ( char_u * ) _ ( \"is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>file\" ) , 0 ) ; msg_end ( ) ; msg_scroll = msg_save ; return retval ; } # endif # if defined ( MSWIN ) if ( ! p_odev && mch_nodetype ( fname ) == NODE_WRITABLE ) { filemess ( curbuf , fname , ( char_u * ) _ ( \"is<S2SV_blank>a<S2SV_blank>device<S2SV_blank>(disabled<S2SV_blank>with<S2SV_blank>\\'opendevice\\'<S2SV_blank>option)\" ) , 0 ) ; msg_end ( ) ; msg_scroll = msg_save ; return FAIL ; } # endif } set_file_options ( set_options , eap ) ; check_readonly = ( newfile && ( curbuf -> b_flags & BF_CHECK_RO ) ) ; if ( check_readonly && ! readonlymode ) curbuf -> b_p_ro = FALSE ; if ( newfile && ! read_stdin && ! read_buffer && ! read_fifo ) { if ( mch_stat ( ( char * ) fname , & st ) >= 0 ) { buf_store_time ( curbuf , & st , fname ) ; curbuf -> b_mtime_read = curbuf -> b_mtime ; # ifdef UNIX swap_mode = ( st . st_mode & 0644 ) | 0600 ; # endif # ifdef FEAT_CW_EDITOR ( void ) GetFSSpecFromPath ( curbuf -> b_ffname , & curbuf -> b_FSSpec ) ; # endif # ifdef VMS curbuf -> b_fab_rfm = st . st_fab_rfm ; curbuf -> b_fab_rat = st . st_fab_rat ; curbuf -> b_fab_mrs = st . st_fab_mrs ; # endif } else { curbuf -> b_mtime = 0 ; curbuf -> b_mtime_read = 0 ; curbuf -> b_orig_size = 0 ; curbuf -> b_orig_mode = 0 ; } curbuf -> b_flags &= ~ ( BF_NEW | BF_NEW_W ) ; } file_readonly = FALSE ; if ( read_stdin ) { # if defined ( MSWIN ) setmode ( 0 , O_BINARY ) ; # endif } else if ( ! read_buffer ) { # ifdef USE_MCH_ACCESS if ( # ifdef UNIX ! ( perm & 0222 ) || # endif mch_access ( ( char * ) fname , W_OK ) ) file_readonly = TRUE ; fd = mch_open ( ( char * ) fname , O_RDONLY | O_EXTRA , 0 ) ; # else if ( ! newfile || readonlymode || ( fd = mch_open ( ( char * ) fname , O_RDWR | O_EXTRA , 0 ) ) < 0 ) { file_readonly = TRUE ; fd = mch_open ( ( char * ) fname , O_RDONLY | O_EXTRA , 0 ) ; } # endif } if ( fd < 0 ) { # ifndef UNIX int isdir_f ; # endif msg_scroll = msg_save ; # ifndef UNIX isdir_f = ( mch_isdir ( fname ) ) ; perm = mch_getperm ( fname ) ; if ( isdir_f ) { filemess ( curbuf , sfname , ( char_u * ) _ ( \"is<S2SV_blank>a<S2SV_blank>directory\" ) , 0 ) ; curbuf -> b_p_ro = TRUE ; } else # endif if ( newfile ) { if ( perm < 0 # ifdef ENOENT && errno == ENOENT # endif ) { curbuf -> b_flags |= BF_NEW ; # ifdef FEAT_QUICKFIX if ( ! bt_dontwrite ( curbuf ) ) # endif { check_need_swap ( newfile ) ; # ifdef FEAT_AUTOCMD if ( curbuf != old_curbuf || ( using_b_ffname && ( old_b_ffname != curbuf -> b_ffname ) ) || ( using_b_fname && ( old_b_fname != curbuf -> b_fname ) ) ) { EMSG ( _ ( e_auchangedbuf ) ) ; return FAIL ; } # endif } if ( dir_of_file_exists ( fname ) ) filemess ( curbuf , sfname , ( char_u * ) _ ( \"[New<S2SV_blank>File]\" ) , 0 ) ; else filemess ( curbuf , sfname , ( char_u * ) _ ( \"[New<S2SV_blank>DIRECTORY]\" ) , 0 ) ; # ifdef FEAT_VIMINFO check_marks_read ( ) ; # endif # ifdef FEAT_MBYTE if ( eap != NULL ) set_forced_fenc ( eap ) ; # endif # ifdef FEAT_AUTOCMD apply_autocmds_exarg ( EVENT_BUFNEWFILE , sfname , sfname , FALSE , curbuf , eap ) ; # endif save_file_ff ( curbuf ) ; # if defined ( FEAT_AUTOCMD ) && defined ( FEAT_EVAL ) if ( aborting ( ) ) return FAIL ; # endif return OK ; } else { filemess ( curbuf , sfname , ( char_u * ) ( # ifdef EFBIG ( errno == EFBIG ) ? _ ( \"[File<S2SV_blank>too<S2SV_blank>big]\" ) : # endif # ifdef EOVERFLOW ( errno == EOVERFLOW ) ? _ ( \"[File<S2SV_blank>too<S2SV_blank>big]\" ) : # endif _ ( \"[Permission<S2SV_blank>Denied]\" ) ) , 0 ) ; curbuf -> b_p_ro = TRUE ; } } return FAIL ; } if ( ( check_readonly && file_readonly ) || curbuf -> b_help ) curbuf -> b_p_ro = TRUE ; if ( set_options ) { if ( ! read_buffer ) { curbuf -> b_p_eol = TRUE ; curbuf -> b_start_eol = TRUE ; } # ifdef FEAT_MBYTE curbuf -> b_p_bomb = FALSE ; curbuf -> b_start_bomb = FALSE ; # endif } # ifdef FEAT_QUICKFIX if ( ! bt_dontwrite ( curbuf ) ) # endif { check_need_swap ( newfile ) ; # ifdef FEAT_AUTOCMD if ( ! read_stdin && ( curbuf != old_curbuf || ( using_b_ffname && ( old_b_ffname != curbuf -> b_ffname ) ) || ( using_b_fname && ( old_b_fname != curbuf -> b_fname ) ) ) ) { EMSG ( _ ( e_auchangedbuf ) ) ; if ( ! read_buffer ) close ( fd ) ; return FAIL ; } # endif # ifdef UNIX if ( swap_mode > 0 && curbuf -> b_ml . ml_mfp != NULL && curbuf -> b_ml . ml_mfp -> mf_fname != NULL ) <S2SV_StartBug> ( void ) mch_setperm ( curbuf -> b_ml . ml_mfp -> mf_fname , ( long ) swap_mode ) ; <S2SV_EndBug> # endif } # if defined ( HAS_SWAP_EXISTS_ACTION ) if ( swap_exists_action == SEA_QUIT ) { if ( ! read_buffer && ! read_stdin ) close ( fd ) ; return FAIL ; } # endif ++ no_wait_return ; curbuf -> b_op_start . lnum = ( ( from == 0 ) ? 1 : from ) ; curbuf -> b_op_start . col = 0 ; try_mac = ( vim_strchr ( p_ffs , 'm' ) != NULL ) ; try_dos = ( vim_strchr ( p_ffs , 'd' ) != NULL ) ; try_unix = ( vim_strchr ( p_ffs , 'x' ) != NULL ) ; # ifdef FEAT_AUTOCMD if ( ! read_buffer ) { int m = msg_scroll ; int n = msg_scrolled ; if ( ! read_stdin ) close ( fd ) ; msg_scroll = TRUE ; if ( filtering ) apply_autocmds_exarg ( EVENT_FILTERREADPRE , NULL , sfname , FALSE , curbuf , eap ) ; else if ( read_stdin ) apply_autocmds_exarg ( EVENT_STDINREADPRE , NULL , sfname , FALSE , curbuf , eap ) ; else if ( newfile ) apply_autocmds_exarg ( EVENT_BUFREADPRE , NULL , sfname , FALSE , curbuf , eap ) ; else apply_autocmds_exarg ( EVENT_FILEREADPRE , sfname , sfname , FALSE , NULL , eap ) ; try_mac = ( vim_strchr ( p_ffs , 'm' ) != NULL ) ; try_dos = ( vim_strchr ( p_ffs , 'd' ) != NULL ) ; try_unix = ( vim_strchr ( p_ffs , 'x' ) != NULL ) ; if ( msg_scrolled == n ) msg_scroll = m ; # ifdef FEAT_EVAL if ( aborting ( ) ) { -- no_wait_return ; msg_scroll = msg_save ; curbuf -> b_p_ro = TRUE ; return FAIL ; } # endif if ( ! read_stdin && ( curbuf != old_curbuf || ( using_b_ffname && ( old_b_ffname != curbuf -> b_ffname ) ) || ( using_b_fname && ( old_b_fname != curbuf -> b_fname ) ) || ( fd = mch_open ( ( char * ) fname , O_RDONLY | O_EXTRA , 0 ) ) < 0 ) ) { -- no_wait_return ; msg_scroll = msg_save ; if ( fd < 0 ) EMSG ( _ ( \"E200:<S2SV_blank>*ReadPre<S2SV_blank>autocommands<S2SV_blank>made<S2SV_blank>the<S2SV_blank>file<S2SV_blank>unreadable\" ) ) ; else EMSG ( _ ( \"E201:<S2SV_blank>*ReadPre<S2SV_blank>autocommands<S2SV_blank>must<S2SV_blank>not<S2SV_blank>change<S2SV_blank>current<S2SV_blank>buffer\" ) ) ; curbuf -> b_p_ro = TRUE ; return FAIL ; } } # endif wasempty = ( curbuf -> b_ml . ml_flags & ML_EMPTY ) ; if ( ! recoverymode && ! filtering && ! ( flags & READ_DUMMY ) ) { if ( read_stdin ) { # ifndef ALWAYS_USE_GUI mch_msg ( _ ( \"Vim:<S2SV_blank>Reading<S2SV_blank>from<S2SV_blank>stdin...\\\\n\" ) ) ; # endif # ifdef FEAT_GUI if ( gui . in_use && ! gui . dying && ! gui . starting ) { p = ( char_u * ) _ ( \"Reading<S2SV_blank>from<S2SV_blank>stdin...\" ) ; gui_write ( p , ( int ) STRLEN ( p ) ) ; } # endif } else if ( ! read_buffer ) filemess ( curbuf , sfname , ( char_u * ) \"\" , 0 ) ; } msg_scroll = FALSE ; linecnt = curbuf -> b_ml . ml_line_count ; # ifdef FEAT_MBYTE if ( eap != NULL && eap -> bad_char != 0 ) { bad_char_behavior = eap -> bad_char ; if ( set_options ) curbuf -> b_bad_char = eap -> bad_char ; } else curbuf -> b_bad_char = 0 ; if ( eap != NULL && eap -> force_enc != 0 ) { fenc = enc_canonize ( eap -> cmd + eap -> force_enc ) ; fenc_alloced = TRUE ; keep_dest_enc = TRUE ; } else if ( curbuf -> b_p_bin ) { fenc = ( char_u * ) \"\" ; fenc_alloced = FALSE ; } else if ( curbuf -> b_help ) { char_u firstline [ 80 ] ; int fc ; fenc = ( char_u * ) \"latin1\" ; c = enc_utf8 ; if ( ! c && ! read_stdin ) { fc = fname [ STRLEN ( fname ) - 1 ] ; if ( TOLOWER_ASC ( fc ) == 'x' ) { len = read_eintr ( fd , firstline , 80 ) ; vim_lseek ( fd , ( off_T ) 0L , SEEK_SET ) ; for ( p = firstline ; p < firstline + len ; ++ p ) if ( * p >= 0x80 ) { c = TRUE ; break ; } } } if ( c ) { fenc_next = fenc ; fenc = ( char_u * ) \"utf-8\" ; if ( ! enc_utf8 ) keep_dest_enc = TRUE ; } fenc_alloced = FALSE ; } else if ( * p_fencs == NUL ) { fenc = curbuf -> b_p_fenc ; fenc_alloced = FALSE ; } else { fenc_next = p_fencs ; fenc = next_fenc ( & fenc_next ) ; fenc_alloced = TRUE ; } # endif retry : if ( file_rewind ) { if ( read_buffer ) { read_buf_lnum = 1 ; read_buf_col = 0 ; } else if ( read_stdin || vim_lseek ( fd , ( off_T ) 0L , SEEK_SET ) != 0 ) { error = TRUE ; goto failed ; } while ( lnum > from ) ml_delete ( lnum -- , FALSE ) ; file_rewind = FALSE ; # ifdef FEAT_MBYTE if ( set_options ) { curbuf -> b_p_bomb = FALSE ; curbuf -> b_start_bomb = FALSE ; } conv_error = 0 ; # endif } if ( keep_fileformat ) keep_fileformat = FALSE ; else { if ( eap != NULL && eap -> force_ff != 0 ) { fileformat = get_fileformat_force ( curbuf , eap ) ; try_unix = try_dos = try_mac = FALSE ; } else if ( curbuf -> b_p_bin ) fileformat = EOL_UNIX ; else if ( * p_ffs == NUL ) fileformat = get_fileformat ( curbuf ) ; else fileformat = EOL_UNKNOWN ; } # ifdef FEAT_MBYTE # ifdef USE_ICONV if ( iconv_fd != ( iconv_t ) - 1 ) { iconv_close ( iconv_fd ) ; iconv_fd = ( iconv_t ) - 1 ; } # endif if ( advance_fenc ) { advance_fenc = FALSE ; if ( eap != NULL && eap -> force_enc != 0 ) { notconverted = TRUE ; conv_error = 0 ; if ( fenc_alloced ) vim_free ( fenc ) ; fenc = ( char_u * ) \"\" ; fenc_alloced = FALSE ; } else { if ( fenc_alloced ) vim_free ( fenc ) ; if ( fenc_next != NULL ) { fenc = next_fenc ( & fenc_next ) ; fenc_alloced = ( fenc_next != NULL ) ; } else { fenc = ( char_u * ) \"\" ; fenc_alloced = FALSE ; } } if ( tmpname != NULL ) { mch_remove ( tmpname ) ; vim_free ( tmpname ) ; tmpname = NULL ; } } fio_flags = 0 ; converted = need_conversion ( fenc ) ; if ( converted ) { if ( STRCMP ( fenc , ENC_UCSBOM ) == 0 ) fio_flags = FIO_UCSBOM ; else if ( enc_utf8 || STRCMP ( p_enc , \"latin1\" ) == 0 ) fio_flags = get_fio_flags ( fenc ) ; # ifdef WIN3264 if ( fio_flags == 0 ) fio_flags = get_win_fio_flags ( fenc ) ; # endif # ifdef MACOS_CONVERT if ( fio_flags == 0 ) fio_flags = get_mac_fio_flags ( fenc ) ; # endif # ifdef USE_ICONV if ( fio_flags == 0 # ifdef FEAT_EVAL && ! did_iconv # endif ) iconv_fd = ( iconv_t ) my_iconv_open ( enc_utf8 ? ( char_u * ) \"utf-8\" : p_enc , fenc ) ; # endif # ifdef FEAT_EVAL if ( fio_flags == 0 && ! read_stdin && ! read_buffer && * p_ccv != NUL && ! read_fifo # ifdef USE_ICONV && iconv_fd == ( iconv_t ) - 1 # endif ) { # ifdef USE_ICONV did_iconv = FALSE ; # endif if ( tmpname == NULL ) { tmpname = readfile_charconvert ( fname , fenc , & fd ) ; if ( tmpname == NULL ) { advance_fenc = TRUE ; if ( fd < 0 ) { EMSG ( _ ( \"E202:<S2SV_blank>Conversion<S2SV_blank>made<S2SV_blank>file<S2SV_blank>unreadable!\" ) ) ; error = TRUE ; goto failed ; } goto retry ; } } } else # endif { if ( fio_flags == 0 # ifdef USE_ICONV && iconv_fd == ( iconv_t ) - 1 # endif ) { advance_fenc = TRUE ; goto retry ; } } } can_retry = ( * fenc != NUL && ! read_stdin && ! read_fifo && ! keep_dest_enc ) ; # endif if ( ! skip_read ) { linerest = 0 ; filesize = 0 ; skip_count = lines_to_skip ; read_count = lines_to_read ; # ifdef FEAT_MBYTE conv_restlen = 0 ; # endif # ifdef FEAT_PERSISTENT_UNDO read_undo_file = ( newfile && ( flags & READ_KEEP_UNDO ) == 0 && curbuf -> b_ffname != NULL && curbuf -> b_p_udf && ! filtering && ! read_fifo && ! read_stdin && ! read_buffer ) ; if ( read_undo_file ) sha256_start ( & sha_ctx ) ; # endif # ifdef FEAT_CRYPT if ( curbuf -> b_cryptstate != NULL ) { crypt_free_state ( curbuf -> b_cryptstate ) ; curbuf -> b_cryptstate = NULL ; } # endif } while ( ! error && ! got_int ) { # if VIM_SIZEOF_INT <= 2 if ( linerest >= 0x7ff0 ) { ++ split ; * ptr = NL ; size = 1 ; } else # endif { if ( ! skip_read ) { # if VIM_SIZEOF_INT > 2 # if defined ( SSIZE_MAX ) && ( SSIZE_MAX < 0x10000L ) size = SSIZE_MAX ; # else size = 0x10000L ; # endif # else size = 0x7ff0L - linerest ; # endif for ( ; size >= 10 ; size = ( long ) ( ( long_u ) size >> 1 ) ) { if ( ( new_buffer = lalloc ( ( long_u ) ( size + linerest + 1 ) , FALSE ) ) != NULL ) break ; } if ( new_buffer == NULL ) { do_outofmem_msg ( ( long_u ) ( size * 2 + linerest + 1 ) ) ; error = TRUE ; break ; } if ( linerest ) mch_memmove ( new_buffer , ptr - linerest , ( size_t ) linerest ) ; vim_free ( buffer ) ; buffer = new_buffer ; ptr = buffer + linerest ; line_start = buffer ; # ifdef FEAT_MBYTE real_size = ( int ) size ; # ifdef USE_ICONV if ( iconv_fd != ( iconv_t ) - 1 ) size = size / ICONV_MULT ; else # endif if ( fio_flags & FIO_LATIN1 ) size = size / 2 ; else if ( fio_flags & ( FIO_UCS2 | FIO_UTF16 ) ) size = ( size * 2 / 3 ) & ~ 1 ; else if ( fio_flags & FIO_UCS4 ) size = ( size * 2 / 3 ) & ~ 3 ; else if ( fio_flags == FIO_UCSBOM ) size = size / ICONV_MULT ; # ifdef WIN3264 else if ( fio_flags & FIO_CODEPAGE ) size = size / ICONV_MULT ; # endif # ifdef MACOS_CONVERT else if ( fio_flags & FIO_MACROMAN ) size = size / ICONV_MULT ; # endif # endif # ifdef FEAT_MBYTE if ( conv_restlen > 0 ) { mch_memmove ( ptr , conv_rest , conv_restlen ) ; ptr += conv_restlen ; size -= conv_restlen ; } # endif if ( read_buffer ) { if ( read_buf_lnum > from ) size = 0 ; else { int n , ni ; long tlen ; tlen = 0 ; for ( ; ; ) { p = ml_get ( read_buf_lnum ) + read_buf_col ; n = ( int ) STRLEN ( p ) ; if ( ( int ) tlen + n + 1 > size ) { n = ( int ) ( size - tlen ) ; for ( ni = 0 ; ni < n ; ++ ni ) { if ( p [ ni ] == NL ) ptr [ tlen ++ ] = NUL ; else ptr [ tlen ++ ] = p [ ni ] ; } read_buf_col += n ; break ; } else { for ( ni = 0 ; ni < n ; ++ ni ) { if ( p [ ni ] == NL ) ptr [ tlen ++ ] = NUL ; else ptr [ tlen ++ ] = p [ ni ] ; } ptr [ tlen ++ ] = NL ; read_buf_col = 0 ; if ( ++ read_buf_lnum > from ) { if ( ! curbuf -> b_p_eol ) -- tlen ; size = tlen ; break ; } } } } } else { size = read_eintr ( fd , ptr , size ) ; } # ifdef FEAT_CRYPT if ( filesize == 0 && size > 0 ) cryptkey = check_for_cryptkey ( cryptkey , ptr , & size , & filesize , newfile , sfname , & did_ask_for_key ) ; if ( cryptkey != NULL && curbuf -> b_cryptstate != NULL && size > 0 ) { if ( crypt_works_inplace ( curbuf -> b_cryptstate ) ) { crypt_decode_inplace ( curbuf -> b_cryptstate , ptr , size ) ; } else { char_u * newptr = NULL ; int decrypted_size ; decrypted_size = crypt_decode_alloc ( curbuf -> b_cryptstate , ptr , size , & newptr ) ; if ( size > 0 && decrypted_size == 0 ) continue ; if ( linerest == 0 ) { new_buffer = newptr ; } else { long_u new_size ; new_size = ( long_u ) ( decrypted_size + linerest + 1 ) ; new_buffer = lalloc ( new_size , FALSE ) ; if ( new_buffer == NULL ) { do_outofmem_msg ( new_size ) ; error = TRUE ; break ; } mch_memmove ( new_buffer , buffer , linerest ) ; if ( newptr != NULL ) mch_memmove ( new_buffer + linerest , newptr , decrypted_size ) ; } if ( new_buffer != NULL ) { vim_free ( buffer ) ; buffer = new_buffer ; new_buffer = NULL ; line_start = buffer ; ptr = buffer + linerest ; } size = decrypted_size ; } } # endif if ( size <= 0 ) { if ( size < 0 ) error = TRUE ; # ifdef FEAT_MBYTE else if ( conv_restlen > 0 ) { if ( fio_flags != 0 # ifdef USE_ICONV || iconv_fd != ( iconv_t ) - 1 # endif ) { if ( can_retry ) goto rewind_retry ; if ( conv_error == 0 ) conv_error = curbuf -> b_ml . ml_line_count - linecnt + 1 ; } else if ( illegal_byte == 0 ) illegal_byte = curbuf -> b_ml . ml_line_count - linecnt + 1 ; if ( bad_char_behavior == BAD_DROP ) { * ( ptr - conv_restlen ) = NUL ; conv_restlen = 0 ; } else { if ( bad_char_behavior != BAD_KEEP && ( fio_flags != 0 # ifdef USE_ICONV || iconv_fd != ( iconv_t ) - 1 # endif ) ) { while ( conv_restlen > 0 ) { * ( -- ptr ) = bad_char_behavior ; -- conv_restlen ; } } fio_flags = 0 ; # ifdef USE_ICONV if ( iconv_fd != ( iconv_t ) - 1 ) { iconv_close ( iconv_fd ) ; iconv_fd = ( iconv_t ) - 1 ; } # endif } } # endif } } skip_read = FALSE ; # ifdef FEAT_MBYTE if ( ( filesize == 0 # ifdef FEAT_CRYPT || ( cryptkey != NULL && filesize == crypt_get_header_len ( crypt_get_method_nr ( curbuf ) ) ) # endif ) && ( fio_flags == FIO_UCSBOM || ( ! curbuf -> b_p_bomb && tmpname == NULL && ( * fenc == 'u' || ( * fenc == NUL && enc_utf8 ) ) ) ) ) { char_u * ccname ; int blen ; if ( size < 2 || curbuf -> b_p_bin ) ccname = NULL ; else ccname = check_for_bom ( ptr , size , & blen , fio_flags == FIO_UCSBOM ? FIO_ALL : get_fio_flags ( fenc ) ) ; if ( ccname != NULL ) { filesize += blen ; size -= blen ; mch_memmove ( ptr , ptr + blen , ( size_t ) size ) ; if ( set_options ) { curbuf -> b_p_bomb = TRUE ; curbuf -> b_start_bomb = TRUE ; } } if ( fio_flags == FIO_UCSBOM ) { if ( ccname == NULL ) { advance_fenc = TRUE ; } else { if ( fenc_alloced ) vim_free ( fenc ) ; fenc = ccname ; fenc_alloced = FALSE ; } skip_read = TRUE ; goto retry ; } } ptr -= conv_restlen ; size += conv_restlen ; conv_restlen = 0 ; # endif if ( size <= 0 ) break ; # ifdef FEAT_MBYTE # ifdef USE_ICONV if ( iconv_fd != ( iconv_t ) - 1 ) { const char * fromp ; char * top ; size_t from_size ; size_t to_size ; fromp = ( char * ) ptr ; from_size = size ; ptr += size ; top = ( char * ) ptr ; to_size = real_size - size ; while ( ( iconv ( iconv_fd , ( void * ) & fromp , & from_size , & top , & to_size ) == ( size_t ) - 1 && ICONV_ERRNO != ICONV_EINVAL ) || from_size > CONV_RESTLEN ) { if ( can_retry ) goto rewind_retry ; if ( conv_error == 0 ) conv_error = readfile_linenr ( linecnt , ptr , ( char_u * ) top ) ; ++ fromp ; -- from_size ; if ( bad_char_behavior == BAD_KEEP ) { * top ++ = * ( fromp - 1 ) ; -- to_size ; } else if ( bad_char_behavior != BAD_DROP ) { * top ++ = bad_char_behavior ; -- to_size ; } } if ( from_size > 0 ) { mch_memmove ( conv_rest , ( char_u * ) fromp , from_size ) ; conv_restlen = ( int ) from_size ; } line_start = ptr - linerest ; mch_memmove ( line_start , buffer , ( size_t ) linerest ) ; size = ( long ) ( ( char_u * ) top - ptr ) ; } # endif # ifdef WIN3264 if ( fio_flags & FIO_CODEPAGE ) { char_u * src , * dst ; WCHAR ucs2buf [ 3 ] ; int ucs2len ; int codepage = FIO_GET_CP ( fio_flags ) ; int bytelen ; int found_bad ; char replstr [ 2 ] ; if ( bad_char_behavior > 0 ) replstr [ 0 ] = bad_char_behavior ; else replstr [ 0 ] = '?' ; replstr [ 1 ] = NUL ; src = ptr + real_size - size ; mch_memmove ( src , ptr , size ) ; dst = ptr ; size = size ; while ( size > 0 ) { found_bad = FALSE ; # ifdef CP_UTF8 if ( codepage == CP_UTF8 ) { bytelen = ( int ) utf_ptr2len_len ( src , size ) ; if ( bytelen > size ) { if ( bytelen <= CONV_RESTLEN ) break ; bytelen = size ; found_bad = TRUE ; } else { int u8c = utf_ptr2char ( src ) ; if ( u8c > 0xffff || ( * src >= 0x80 && bytelen == 1 ) ) found_bad = TRUE ; ucs2buf [ 0 ] = u8c ; ucs2len = 1 ; } } else # endif { for ( bytelen = 1 ; bytelen <= size && bytelen <= 3 ; ++ bytelen ) { ucs2len = MultiByteToWideChar ( codepage , MB_ERR_INVALID_CHARS , ( LPCSTR ) src , bytelen , ucs2buf , 3 ) ; if ( ucs2len > 0 ) break ; } if ( ucs2len == 0 ) { if ( size == 1 ) break ; found_bad = TRUE ; bytelen = 1 ; } } if ( ! found_bad ) { int i ; if ( enc_utf8 ) { for ( i = 0 ; i < ucs2len ; ++ i ) dst += utf_char2bytes ( ucs2buf [ i ] , dst ) ; } else { BOOL bad = FALSE ; int dstlen ; dstlen = WideCharToMultiByte ( enc_codepage , 0 , ( LPCWSTR ) ucs2buf , ucs2len , ( LPSTR ) dst , ( int ) ( src - dst ) , replstr , & bad ) ; if ( bad ) found_bad = TRUE ; else dst += dstlen ; } } if ( found_bad ) { if ( can_retry ) goto rewind_retry ; if ( conv_error == 0 ) conv_error = readfile_linenr ( linecnt , ptr , dst ) ; if ( bad_char_behavior != BAD_DROP ) { if ( bad_char_behavior == BAD_KEEP ) { mch_memmove ( dst , src , bytelen ) ; dst += bytelen ; } else * dst ++ = bad_char_behavior ; } } src += bytelen ; size -= bytelen ; } if ( size > 0 ) { mch_memmove ( conv_rest , src , size ) ; conv_restlen = size ; } size = ( long ) ( dst - ptr ) ; } else # endif # ifdef MACOS_CONVERT if ( fio_flags & FIO_MACROMAN ) { if ( macroman2enc ( ptr , & size , real_size ) == FAIL ) goto rewind_retry ; } else # endif if ( fio_flags != 0 ) { int u8c ; char_u * dest ; char_u * tail = NULL ; dest = ptr + real_size ; if ( fio_flags == FIO_LATIN1 || fio_flags == FIO_UTF8 ) { p = ptr + size ; if ( fio_flags == FIO_UTF8 ) { tail = ptr + size - 1 ; while ( tail > ptr && ( * tail & 0xc0 ) == 0x80 ) -- tail ; if ( tail + utf_byte2len ( * tail ) <= ptr + size ) tail = NULL ; else p = tail ; } } else if ( fio_flags & ( FIO_UCS2 | FIO_UTF16 ) ) { p = ptr + ( size & ~ 1 ) ; if ( size & 1 ) tail = p ; if ( ( fio_flags & FIO_UTF16 ) && p > ptr ) { if ( fio_flags & FIO_ENDIAN_L ) { u8c = ( * -- p << 8 ) ; u8c += * -- p ; } else { u8c = * -- p ; u8c += ( * -- p << 8 ) ; } if ( u8c >= 0xd800 && u8c <= 0xdbff ) tail = p ; else p += 2 ; } } else { p = ptr + ( size & ~ 3 ) ; if ( size & 3 ) tail = p ; } if ( tail != NULL ) { conv_restlen = ( int ) ( ( ptr + size ) - tail ) ; mch_memmove ( conv_rest , ( char_u * ) tail , conv_restlen ) ; size -= conv_restlen ; } while ( p > ptr ) { if ( fio_flags & FIO_LATIN1 ) u8c = * -- p ; else if ( fio_flags & ( FIO_UCS2 | FIO_UTF16 ) ) { if ( fio_flags & FIO_ENDIAN_L ) { u8c = ( * -- p << 8 ) ; u8c += * -- p ; } else { u8c = * -- p ; u8c += ( * -- p << 8 ) ; } if ( ( fio_flags & FIO_UTF16 ) && u8c >= 0xdc00 && u8c <= 0xdfff ) { int u16c ; if ( p == ptr ) { if ( can_retry ) goto rewind_retry ; if ( conv_error == 0 ) conv_error = readfile_linenr ( linecnt , ptr , p ) ; if ( bad_char_behavior == BAD_DROP ) continue ; if ( bad_char_behavior != BAD_KEEP ) u8c = bad_char_behavior ; } if ( fio_flags & FIO_ENDIAN_L ) { u16c = ( * -- p << 8 ) ; u16c += * -- p ; } else { u16c = * -- p ; u16c += ( * -- p << 8 ) ; } u8c = 0x10000 + ( ( u16c & 0x3ff ) << 10 ) + ( u8c & 0x3ff ) ; if ( u16c < 0xd800 || u16c > 0xdbff ) { if ( can_retry ) goto rewind_retry ; if ( conv_error == 0 ) conv_error = readfile_linenr ( linecnt , ptr , p ) ; if ( bad_char_behavior == BAD_DROP ) continue ; if ( bad_char_behavior != BAD_KEEP ) u8c = bad_char_behavior ; } } } else if ( fio_flags & FIO_UCS4 ) { if ( fio_flags & FIO_ENDIAN_L ) { u8c = ( unsigned ) * -- p << 24 ; u8c += ( unsigned ) * -- p << 16 ; u8c += ( unsigned ) * -- p << 8 ; u8c += * -- p ; } else { u8c = * -- p ; u8c += ( unsigned ) * -- p << 8 ; u8c += ( unsigned ) * -- p << 16 ; u8c += ( unsigned ) * -- p << 24 ; } } else { if ( * -- p < 0x80 ) u8c = * p ; else { len = utf_head_off ( ptr , p ) ; p -= len ; u8c = utf_ptr2char ( p ) ; if ( len == 0 ) { if ( can_retry ) goto rewind_retry ; if ( conv_error == 0 ) conv_error = readfile_linenr ( linecnt , ptr , p ) ; if ( bad_char_behavior == BAD_DROP ) continue ; if ( bad_char_behavior != BAD_KEEP ) u8c = bad_char_behavior ; } } } if ( enc_utf8 ) { dest -= utf_char2len ( u8c ) ; ( void ) utf_char2bytes ( u8c , dest ) ; } else { -- dest ; if ( u8c >= 0x100 ) { if ( can_retry ) goto rewind_retry ; if ( conv_error == 0 ) conv_error = readfile_linenr ( linecnt , ptr , p ) ; if ( bad_char_behavior == BAD_DROP ) ++ dest ; else if ( bad_char_behavior == BAD_KEEP ) * dest = u8c ; else if ( eap != NULL && eap -> bad_char != 0 ) * dest = bad_char_behavior ; else * dest = 0xBF ; } else * dest = u8c ; } } line_start = dest - linerest ; mch_memmove ( line_start , buffer , ( size_t ) linerest ) ; size = ( long ) ( ( ptr + real_size ) - dest ) ; ptr = dest ; } else if ( enc_utf8 && ! curbuf -> b_p_bin ) { int incomplete_tail = FALSE ; for ( p = ptr ; ; ++ p ) { int todo = ( int ) ( ( ptr + size ) - p ) ; int l ; if ( todo <= 0 ) break ; if ( * p >= 0x80 ) { l = utf_ptr2len_len ( p , todo ) ; if ( l > todo && ! incomplete_tail ) { if ( p > ptr || filesize > 0 ) incomplete_tail = TRUE ; if ( p > ptr ) { conv_restlen = todo ; mch_memmove ( conv_rest , p , conv_restlen ) ; size -= conv_restlen ; break ; } } if ( l == 1 || l > todo ) { if ( can_retry && ! incomplete_tail ) break ; # ifdef USE_ICONV if ( iconv_fd != ( iconv_t ) - 1 && conv_error == 0 ) conv_error = readfile_linenr ( linecnt , ptr , p ) ; # endif if ( conv_error == 0 && illegal_byte == 0 ) illegal_byte = readfile_linenr ( linecnt , ptr , p ) ; if ( bad_char_behavior == BAD_DROP ) { mch_memmove ( p , p + 1 , todo - 1 ) ; -- p ; -- size ; } else if ( bad_char_behavior != BAD_KEEP ) * p = bad_char_behavior ; } else p += l - 1 ; } } if ( p < ptr + size && ! incomplete_tail ) { rewind_retry : # if defined ( FEAT_EVAL ) && defined ( USE_ICONV ) if ( * p_ccv != NUL && iconv_fd != ( iconv_t ) - 1 ) did_iconv = TRUE ; else # endif advance_fenc = TRUE ; file_rewind = TRUE ; goto retry ; } } # endif filesize += size ; if ( fileformat == EOL_UNKNOWN ) { if ( try_dos || try_unix ) { if ( try_mac ) try_mac = 1 ; for ( p = ptr ; p < ptr + size ; ++ p ) { if ( * p == NL ) { if ( ! try_unix || ( try_dos && p > ptr && p [ - 1 ] == CAR ) ) fileformat = EOL_DOS ; else fileformat = EOL_UNIX ; break ; } else if ( * p == CAR && try_mac ) try_mac ++ ; } if ( fileformat == EOL_UNIX && try_mac ) { try_mac = 1 ; try_unix = 1 ; for ( ; p >= ptr && * p != CAR ; p -- ) ; if ( p >= ptr ) { for ( p = ptr ; p < ptr + size ; ++ p ) { if ( * p == NL ) try_unix ++ ; else if ( * p == CAR ) try_mac ++ ; } if ( try_mac > try_unix ) fileformat = EOL_MAC ; } } else if ( fileformat == EOL_UNKNOWN && try_mac == 1 ) fileformat = default_fileformat ( ) ; } if ( fileformat == EOL_UNKNOWN && try_mac ) fileformat = EOL_MAC ; if ( fileformat == EOL_UNKNOWN ) fileformat = default_fileformat ( ) ; if ( set_options ) set_fileformat ( fileformat , OPT_LOCAL ) ; } } if ( fileformat == EOL_MAC ) { -- ptr ; while ( ++ ptr , -- size >= 0 ) { if ( ( c = * ptr ) != NUL && c != CAR && c != NL ) continue ; if ( c == NUL ) * ptr = NL ; else if ( c == NL ) * ptr = CAR ; else { if ( skip_count == 0 ) { * ptr = NUL ; len = ( colnr_T ) ( ptr - line_start + 1 ) ; if ( ml_append ( lnum , line_start , len , newfile ) == FAIL ) { error = TRUE ; break ; } # ifdef FEAT_PERSISTENT_UNDO if ( read_undo_file ) sha256_update ( & sha_ctx , line_start , len ) ; # endif ++ lnum ; if ( -- read_count == 0 ) { error = TRUE ; line_start = ptr ; break ; } } else -- skip_count ; line_start = ptr + 1 ; } } } else { -- ptr ; while ( ++ ptr , -- size >= 0 ) { if ( ( c = * ptr ) != NUL && c != NL ) continue ; if ( c == NUL ) * ptr = NL ; else { if ( skip_count == 0 ) { * ptr = NUL ; len = ( colnr_T ) ( ptr - line_start + 1 ) ; if ( fileformat == EOL_DOS ) { if ( ptr > line_start && ptr [ - 1 ] == CAR ) { ptr [ - 1 ] = NUL ; -- len ; } else if ( ff_error != EOL_DOS ) { if ( try_unix && ! read_stdin && ( read_buffer || vim_lseek ( fd , ( off_T ) 0L , SEEK_SET ) == 0 ) ) { fileformat = EOL_UNIX ; if ( set_options ) set_fileformat ( EOL_UNIX , OPT_LOCAL ) ; file_rewind = TRUE ; keep_fileformat = TRUE ; goto retry ; } ff_error = EOL_DOS ; } } if ( ml_append ( lnum , line_start , len , newfile ) == FAIL ) { error = TRUE ; break ; } # ifdef FEAT_PERSISTENT_UNDO if ( read_undo_file ) sha256_update ( & sha_ctx , line_start , len ) ; # endif ++ lnum ; if ( -- read_count == 0 ) { error = TRUE ; line_start = ptr ; break ; } } else -- skip_count ; line_start = ptr + 1 ; } } } linerest = ( long ) ( ptr - line_start ) ; ui_breakcheck ( ) ; } failed : if ( error && read_count == 0 ) error = FALSE ; if ( ! error && ! got_int && linerest != 0 && ! ( ! curbuf -> b_p_bin && fileformat == EOL_DOS && * line_start == Ctrl_Z && ptr == line_start + 1 ) ) { if ( set_options ) curbuf -> b_p_eol = FALSE ; * ptr = NUL ; len = ( colnr_T ) ( ptr - line_start + 1 ) ; if ( ml_append ( lnum , line_start , len , newfile ) == FAIL ) error = TRUE ; else { # ifdef FEAT_PERSISTENT_UNDO if ( read_undo_file ) sha256_update ( & sha_ctx , line_start , len ) ; # endif read_no_eol_lnum = ++ lnum ; } } if ( set_options ) save_file_ff ( curbuf ) ; # ifdef FEAT_CRYPT if ( curbuf -> b_cryptstate != NULL ) { crypt_free_state ( curbuf -> b_cryptstate ) ; curbuf -> b_cryptstate = NULL ; } if ( cryptkey != NULL && cryptkey != curbuf -> b_p_key ) crypt_free_key ( cryptkey ) ; # endif # ifdef FEAT_MBYTE if ( set_options ) set_string_option_direct ( ( char_u * ) \"fenc\" , - 1 , fenc , OPT_FREE | OPT_LOCAL , 0 ) ; if ( fenc_alloced ) vim_free ( fenc ) ; # ifdef USE_ICONV if ( iconv_fd != ( iconv_t ) - 1 ) { iconv_close ( iconv_fd ) ; iconv_fd = ( iconv_t ) - 1 ; } # endif # endif if ( ! read_buffer && ! read_stdin ) close ( fd ) ; # ifdef HAVE_FD_CLOEXEC else { int fdflags = fcntl ( fd , F_GETFD ) ; if ( fdflags >= 0 && ( fdflags & FD_CLOEXEC ) == 0 ) ( void ) fcntl ( fd , F_SETFD , fdflags | FD_CLOEXEC ) ; } # endif vim_free ( buffer ) ; # ifdef HAVE_DUP if ( read_stdin ) { close ( 0 ) ; ignored = dup ( 2 ) ; } # endif # ifdef FEAT_MBYTE if ( tmpname != NULL ) { mch_remove ( tmpname ) ; vim_free ( tmpname ) ; } # endif -- no_wait_return ; if ( ! recoverymode ) { if ( newfile && wasempty && ! ( curbuf -> b_ml . ml_flags & ML_EMPTY ) ) { # ifdef FEAT_NETBEANS_INTG netbeansFireChanges = 0 ; # endif ml_delete ( curbuf -> b_ml . ml_line_count , FALSE ) ; # ifdef FEAT_NETBEANS_INTG netbeansFireChanges = 1 ; # endif -- linecnt ; } linecnt = curbuf -> b_ml . ml_line_count - linecnt ; if ( filesize == 0 ) linecnt = 0 ; if ( newfile || read_buffer ) { redraw_curbuf_later ( NOT_VALID ) ; # ifdef FEAT_DIFF diff_invalidate ( curbuf ) ; # endif # ifdef FEAT_FOLDING foldUpdateAll ( curwin ) ; # endif } else if ( linecnt ) appended_lines_mark ( from , linecnt ) ; # ifndef ALWAYS_USE_GUI if ( read_stdin ) { settmode ( TMODE_RAW ) ; starttermcap ( ) ; screenclear ( ) ; } # endif if ( got_int ) { if ( ! ( flags & READ_DUMMY ) ) { filemess ( curbuf , sfname , ( char_u * ) _ ( e_interr ) , 0 ) ; if ( newfile ) curbuf -> b_p_ro = TRUE ; } msg_scroll = msg_save ; # ifdef FEAT_VIMINFO check_marks_read ( ) ; # endif return OK ; } if ( ! filtering && ! ( flags & READ_DUMMY ) ) { msg_add_fname ( curbuf , sfname ) ; c = FALSE ; # ifdef UNIX # ifdef S_ISFIFO if ( S_ISFIFO ( perm ) ) { STRCAT ( IObuff , _ ( \"[fifo/socket]\" ) ) ; c = TRUE ; } # else # ifdef S_IFIFO if ( ( perm & S_IFMT ) == S_IFIFO ) { STRCAT ( IObuff , _ ( \"[fifo]\" ) ) ; c = TRUE ; } # endif # ifdef S_IFSOCK if ( ( perm & S_IFMT ) == S_IFSOCK ) { STRCAT ( IObuff , _ ( \"[socket]\" ) ) ; c = TRUE ; } # endif # endif # ifdef OPEN_CHR_FILES if ( S_ISCHR ( perm ) ) { STRCAT ( IObuff , _ ( \"[character<S2SV_blank>special]\" ) ) ; c = TRUE ; } # endif # endif if ( curbuf -> b_p_ro ) { STRCAT ( IObuff , shortmess ( SHM_RO ) ? _ ( \"[RO]\" ) : _ ( \"[readonly]\" ) ) ; c = TRUE ; } if ( read_no_eol_lnum ) { msg_add_eol ( ) ; c = TRUE ; } if ( ff_error == EOL_DOS ) { STRCAT ( IObuff , _ ( \"[CR<S2SV_blank>missing]\" ) ) ; c = TRUE ; } if ( split ) { STRCAT ( IObuff , _ ( \"[long<S2SV_blank>lines<S2SV_blank>split]\" ) ) ; c = TRUE ; } # ifdef FEAT_MBYTE if ( notconverted ) { STRCAT ( IObuff , _ ( \"[NOT<S2SV_blank>converted]\" ) ) ; c = TRUE ; } else if ( converted ) { STRCAT ( IObuff , _ ( \"[converted]\" ) ) ; c = TRUE ; } # endif # ifdef FEAT_CRYPT if ( cryptkey != NULL ) { crypt_append_msg ( curbuf ) ; c = TRUE ; } # endif # ifdef FEAT_MBYTE if ( conv_error != 0 ) { sprintf ( ( char * ) IObuff + STRLEN ( IObuff ) , _ ( \"[CONVERSION<S2SV_blank>ERROR<S2SV_blank>in<S2SV_blank>line<S2SV_blank>%ld]\" ) , ( long ) conv_error ) ; c = TRUE ; } else if ( illegal_byte > 0 ) { sprintf ( ( char * ) IObuff + STRLEN ( IObuff ) , _ ( \"[ILLEGAL<S2SV_blank>BYTE<S2SV_blank>in<S2SV_blank>line<S2SV_blank>%ld]\" ) , ( long ) illegal_byte ) ; c = TRUE ; } else # endif if ( error ) { STRCAT ( IObuff , _ ( \"[READ<S2SV_blank>ERRORS]\" ) ) ; c = TRUE ; } if ( msg_add_fileformat ( fileformat ) ) c = TRUE ; # ifdef FEAT_CRYPT if ( cryptkey != NULL ) msg_add_lines ( c , ( long ) linecnt , filesize - crypt_get_header_len ( crypt_get_method_nr ( curbuf ) ) ) ; else # endif msg_add_lines ( c , ( long ) linecnt , filesize ) ; vim_free ( keep_msg ) ; keep_msg = NULL ; msg_scrolled_ign = TRUE ; # ifdef ALWAYS_USE_GUI if ( read_stdin || read_buffer ) p = msg_may_trunc ( FALSE , IObuff ) ; else # endif p = msg_trunc_attr ( IObuff , FALSE , 0 ) ; if ( read_stdin || read_buffer || restart_edit != 0 || ( msg_scrolled != 0 && ! need_wait_return ) ) set_keep_msg ( p , 0 ) ; msg_scrolled_ign = FALSE ; } if ( newfile && ( error # ifdef FEAT_MBYTE || conv_error != 0 || ( illegal_byte > 0 && bad_char_behavior != BAD_KEEP ) # endif ) ) curbuf -> b_p_ro = TRUE ; u_clearline ( ) ; if ( exmode_active ) curwin -> w_cursor . lnum = from + linecnt ; else curwin -> w_cursor . lnum = from + 1 ; check_cursor_lnum ( ) ; beginline ( BL_WHITE | BL_FIX ) ; curbuf -> b_op_start . lnum = from + 1 ; curbuf -> b_op_start . col = 0 ; curbuf -> b_op_end . lnum = from + linecnt ; curbuf -> b_op_end . col = 0 ; # ifdef WIN32 if ( newfile && ! read_stdin && ! read_buffer && mch_stat ( ( char * ) fname , & st ) >= 0 ) { buf_store_time ( curbuf , & st , fname ) ; curbuf -> b_mtime_read = curbuf -> b_mtime ; } # endif } msg_scroll = msg_save ; # ifdef FEAT_VIMINFO check_marks_read ( ) ; # endif curbuf -> b_no_eol_lnum = read_no_eol_lnum ; if ( flags & READ_KEEP_UNDO ) u_find_first_changed ( ) ; # ifdef FEAT_PERSISTENT_UNDO if ( read_undo_file ) { char_u hash [ UNDO_HASH_SIZE ] ; sha256_finish ( & sha_ctx , hash ) ; u_read_undo ( NULL , hash , fname ) ; } # endif # ifdef FEAT_AUTOCMD if ( ! read_stdin && ! read_fifo && ( ! read_buffer || sfname != NULL ) ) { int m = msg_scroll ; int n = msg_scrolled ; if ( set_options ) save_file_ff ( curbuf ) ; msg_scroll = TRUE ; if ( filtering ) apply_autocmds_exarg ( EVENT_FILTERREADPOST , NULL , sfname , FALSE , curbuf , eap ) ; else if ( newfile || ( read_buffer && sfname != NULL ) ) { apply_autocmds_exarg ( EVENT_BUFREADPOST , NULL , sfname , FALSE , curbuf , eap ) ; if ( ! au_did_filetype && * curbuf -> b_p_ft != NUL ) apply_autocmds ( EVENT_FILETYPE , curbuf -> b_p_ft , curbuf -> b_fname , TRUE , curbuf ) ; } else apply_autocmds_exarg ( EVENT_FILEREADPOST , sfname , sfname , FALSE , NULL , eap ) ; if ( msg_scrolled == n ) msg_scroll = m ; # ifdef FEAT_EVAL if ( aborting ( ) ) return FAIL ; # endif } # endif if ( recoverymode && error ) return FAIL ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != NULL ) { char_u * swap_fname = <S2SV_ModEnd> curbuf -> b_ml <S2SV_ModStart> ml_mfp -> mf_fname ; if ( ( swap_mode & 044 ) == 040 ) { stat_T swap_st ; if ( mch_stat ( ( char * ) swap_fname , & swap_st ) >= 0 && st . st_gid != swap_st . st_gid && fchown ( curbuf -> b_ml . ml_mfp -> mf_fd , - 1 , st . st_gid ) == - 1 ) swap_mode &= 0600 ; } ( void ) mch_setperm ( swap_fname <S2SV_ModStart> swap_mode ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t enc624j600SoftReset ( NetInterface * interface ) { do { <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_EUDAST , 0x1234 ) ; <S2SV_EndBug> <S2SV_StartBug> } while ( enc624j600ReadReg ( interface , ENC624J600_REG_EUDAST ) != 0x1234 ) ; <S2SV_EndBug> <S2SV_StartBug> while ( ( enc624j600ReadReg ( interface , ENC624J600_REG_ESTAT ) & ESTAT_CLKRDY ) == 0 ) <S2SV_EndBug> { } <S2SV_StartBug> enc624j600SetBit ( interface , ENC624J600_REG_ECON2 , ECON2_ETHRST ) ; <S2SV_EndBug> sleep ( 1 ) ; <S2SV_StartBug> if ( enc624j600ReadReg ( interface , ENC624J600_REG_EUDAST ) != 0x0000 ) <S2SV_EndBug> { return ERROR_FAILURE ; } sleep ( 1 ) ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC624J600_EUDAST <S2SV_ModEnd> , 0x1234 ) <S2SV_ModStart> ( interface , ENC624J600_EUDAST <S2SV_ModEnd> ) != 0x1234 <S2SV_ModStart> ( interface , ENC624J600_ESTAT ) & ENC624J600_ESTAT_CLKRDY <S2SV_ModEnd> ) == 0 <S2SV_ModStart> ( interface , ENC624J600_ECON2 , ENC624J600_ECON2_ETHRST <S2SV_ModEnd> ) ; sleep <S2SV_ModStart> ( interface , ENC624J600_EUDAST <S2SV_ModEnd> ) != 0x0000\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2636\n\n```\nCWE-399 static int br_mdb_dump ( struct sk_buff * skb , struct netlink_callback * cb ) { struct net_device * dev ; struct net * net = sock_net ( skb -> sk ) ; struct nlmsghdr * nlh = NULL ; int idx = 0 , s_idx ; s_idx = cb -> args [ 0 ] ; rcu_read_lock ( ) ; cb -> seq = net -> dev_base_seq + br_mdb_rehash_seq ; for_each_netdev_rcu ( net , dev ) { if ( dev -> priv_flags & IFF_EBRIDGE ) { struct br_port_msg * bpm ; if ( idx < s_idx ) goto skip ; nlh = nlmsg_put ( skb , NETLINK_CB ( cb -> skb ) . portid , cb -> nlh -> nlmsg_seq , RTM_GETMDB , sizeof ( * bpm ) , NLM_F_MULTI ) ; if ( nlh == NULL ) break ; <S2SV_StartBug> bpm = nlmsg_data ( nlh ) ; <S2SV_EndBug> bpm -> ifindex = dev -> ifindex ; if ( br_mdb_fill_info ( skb , cb , dev ) < 0 ) goto out ; if ( br_rports_fill_info ( skb , cb , dev ) < 0 ) goto out ; cb -> args [ 1 ] = 0 ; nlmsg_end ( skb , nlh ) ; skip : idx ++ ; } } out : if ( nlh ) nlmsg_end ( skb , nlh ) ; rcu_read_unlock ( ) ; cb -> args [ 0 ] = idx ; return skb -> len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nlmsg_data ( nlh ) ; memset ( bpm , 0 , sizeof ( * bpm )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13008\n\n```\nCWE-125 static int parse_elements ( netdissect_options * ndo , struct mgmt_body_t * pbody , const u_char * p , int offset , u_int length ) { u_int elementlen ; struct ssid_t ssid ; struct challenge_t challenge ; struct rates_t rates ; struct ds_t ds ; struct cf_t cf ; struct tim_t tim ; pbody -> challenge_present = 0 ; pbody -> ssid_present = 0 ; pbody -> rates_present = 0 ; pbody -> ds_present = 0 ; pbody -> cf_present = 0 ; pbody -> tim_present = 0 ; while ( length != 0 ) { if ( ! ND_TTEST2 ( * ( p + offset ) , 2 ) ) return 0 ; if ( length < 2 ) return 0 ; elementlen = * ( p + offset + 1 ) ; if ( ! ND_TTEST2 ( * ( p + offset + 2 ) , elementlen ) ) return 0 ; if ( length < elementlen + 2 ) return 0 ; switch ( * ( p + offset ) ) { case E_SSID : memcpy ( & ssid , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( ssid . length != 0 ) { if ( ssid . length > sizeof ( ssid . ssid ) - 1 ) return 0 ; <S2SV_StartBug> if ( ! ND_TTEST2 ( * ( p + offset ) , ssid . length ) ) <S2SV_EndBug> return 0 ; if ( length < ssid . length ) return 0 ; memcpy ( & ssid . ssid , p + offset , ssid . length ) ; offset += ssid . length ; length -= ssid . length ; } ssid . ssid [ ssid . length ] = '\\\\0' ; if ( ! pbody -> ssid_present ) { pbody -> ssid = ssid ; pbody -> ssid_present = 1 ; } break ; case E_CHALLENGE : memcpy ( & challenge , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( challenge . length != 0 ) { if ( challenge . length > sizeof ( challenge . text ) - 1 ) return 0 ; <S2SV_StartBug> if ( ! ND_TTEST2 ( * ( p + offset ) , challenge . length ) ) <S2SV_EndBug> return 0 ; if ( length < challenge . length ) return 0 ; memcpy ( & challenge . text , p + offset , challenge . length ) ; offset += challenge . length ; length -= challenge . length ; } challenge . text [ challenge . length ] = '\\\\0' ; if ( ! pbody -> challenge_present ) { pbody -> challenge = challenge ; pbody -> challenge_present = 1 ; } break ; case E_RATES : memcpy ( & rates , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( rates . length != 0 ) { if ( rates . length > sizeof rates . rate ) return 0 ; <S2SV_StartBug> if ( ! ND_TTEST2 ( * ( p + offset ) , rates . length ) ) <S2SV_EndBug> return 0 ; if ( length < rates . length ) return 0 ; memcpy ( & rates . rate , p + offset , rates . length ) ; offset += rates . length ; length -= rates . length ; } if ( ! pbody -> rates_present && rates . length != 0 ) { pbody -> rates = rates ; pbody -> rates_present = 1 ; } break ; case E_DS : memcpy ( & ds , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( ds . length != 1 ) { offset += ds . length ; length -= ds . length ; break ; } ds . channel = * ( p + offset ) ; offset += 1 ; length -= 1 ; if ( ! pbody -> ds_present ) { pbody -> ds = ds ; pbody -> ds_present = 1 ; } break ; case E_CF : memcpy ( & cf , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( cf . length != 6 ) { offset += cf . length ; length -= cf . length ; break ; } memcpy ( & cf . count , p + offset , 6 ) ; offset += 6 ; length -= 6 ; if ( ! pbody -> cf_present ) { pbody -> cf = cf ; pbody -> cf_present = 1 ; } break ; case E_TIM : memcpy ( & tim , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( tim . length <= 3 ) { offset += tim . length ; length -= tim . length ; break ; } if ( tim . length - 3 > ( int ) sizeof tim . bitmap ) return 0 ; memcpy ( & tim . count , p + offset , 3 ) ; offset += 3 ; length -= 3 ; <S2SV_StartBug> memcpy ( tim . bitmap , p + offset + 3 , tim . length - 3 ) ; <S2SV_EndBug> offset += tim . length - 3 ; length -= tim . length - 3 ; if ( ! pbody -> tim_present ) { pbody -> tim = tim ; pbody -> tim_present = 1 ; } break ; default : # if 0 ND_PRINT ( ( ndo , \"(1)<S2SV_blank>unhandled<S2SV_blank>element_id<S2SV_blank>(%d)<S2SV_blank><S2SV_blank>\" , * ( p + offset ) ) ) ; # endif offset += 2 + elementlen ; length -= 2 + elementlen ; break ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; <S2SV_ModEnd> memcpy ( & <S2SV_ModStart> return 0 ; <S2SV_ModEnd> memcpy ( & <S2SV_ModStart> return 0 ; <S2SV_ModEnd> memcpy ( & <S2SV_ModStart> p + offset <S2SV_ModEnd> , tim .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imagecrop ) { zval * IM ; gdImagePtr im ; gdImagePtr im_crop ; gdRect rect ; zval * z_rect ; zval * * tmp ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"ra\" , & IM , & z_rect ) == FAILURE ) { return ; } ZEND_FETCH_RESOURCE ( im , gdImagePtr , & IM , - 1 , \"Image\" , le_gd ) ; if ( zend_hash_find ( HASH_OF ( z_rect ) , \"x\" , sizeof ( \"x\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> rect . x = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>x<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"y\" , sizeof ( \"x\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> rect . y = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>y<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"width\" , sizeof ( \"width\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> rect . width = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>width\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"height\" , sizeof ( \"height\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> rect . height = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>height\" ) ; RETURN_FALSE ; } im_crop = gdImageCrop ( im , & rect ) ; if ( im_crop == NULL ) { RETURN_FALSE ; } else { ZEND_REGISTER_RESOURCE ( return_value , im_crop , le_gd ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval ) ; <S2SV_ModStart> . x = Z_LVAL ( lval ) ; } else { rect . x = <S2SV_ModStart> tmp ) ; } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval ) ; <S2SV_ModStart> . y = Z_LVAL ( lval ) ; } else { rect . y = <S2SV_ModStart> tmp ) ; } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval ) ; <S2SV_ModStart> . width = Z_LVAL ( lval ) ; } else { rect . width = <S2SV_ModStart> tmp ) ; } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval ) ; <S2SV_ModStart> . height = Z_LVAL ( lval ) ; } else { rect . height = <S2SV_ModStart> tmp ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_layer_buffer_level ( SVC * svc , int encoded_frame_size ) { <S2SV_StartBug> int temporal_layer = 0 ; <S2SV_EndBug> int current_temporal_layer = svc -> temporal_layer_id ; <S2SV_StartBug> for ( temporal_layer = current_temporal_layer + 1 ; <S2SV_EndBug> <S2SV_StartBug> temporal_layer < svc -> number_temporal_layers ; ++ temporal_layer ) { <S2SV_EndBug> <S2SV_StartBug> LAYER_CONTEXT * lc = & svc -> layer_context [ temporal_layer ] ; <S2SV_EndBug> RATE_CONTROL * lrc = & lc -> rc ; int bits_off_for_this_layer = ( int ) ( lc -> target_bandwidth / lc -> framerate - encoded_frame_size ) ; lrc -> bits_off_target += bits_off_for_this_layer ; <S2SV_StartBug> lrc -> bits_off_target = MIN ( lrc -> bits_off_target , lc -> maximum_buffer_size ) ; <S2SV_EndBug> lrc -> buffer_level = lrc -> bits_off_target ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { int i <S2SV_ModEnd> = 0 ; <S2SV_ModStart> ; for ( i <S2SV_ModEnd> = current_temporal_layer + <S2SV_ModStart> + 1 ; i <S2SV_ModEnd> < svc -> <S2SV_ModStart> number_temporal_layers ; ++ i ) { const int layer = LAYER_IDS_TO_IDX ( svc -> spatial_layer_id , i , svc -> number_temporal_layers ) ; <S2SV_ModEnd> LAYER_CONTEXT * lc <S2SV_ModStart> -> layer_context [ layer <S2SV_ModEnd> ] ; RATE_CONTROL <S2SV_ModStart> -> bits_off_target , lrc <S2SV_ModEnd> -> maximum_buffer_size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15129\n\n```\nCWE-416 struct net * get_net_ns_by_id ( struct net * net , int id ) { struct net * peer ; if ( id < 0 ) return NULL ; rcu_read_lock ( ) ; spin_lock_bh ( & net -> nsid_lock ) ; peer = idr_find ( & net -> netns_ids , id ) ; if ( peer ) <S2SV_StartBug> get_net ( peer ) ; <S2SV_EndBug> spin_unlock_bh ( & net -> nsid_lock ) ; rcu_read_unlock ( ) ; return peer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( peer ) peer = maybe_get_net <S2SV_ModEnd> ( peer )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3076\n\n```\nCWE-200 static int hash_recvmsg ( struct kiocb * unused , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct alg_sock * ask = alg_sk ( sk ) ; struct hash_ctx * ctx = ask -> private ; unsigned ds = crypto_ahash_digestsize ( crypto_ahash_reqtfm ( & ctx -> req ) ) ; int err ; if ( len > ds ) len = ds ; else if ( len < ds ) msg -> msg_flags |= MSG_TRUNC ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> if ( ctx -> more ) { ctx -> more = 0 ; ahash_request_set_crypt ( & ctx -> req , NULL , ctx -> result , 0 ) ; err = af_alg_wait_for_completion ( crypto_ahash_final ( & ctx -> req ) , & ctx -> completion ) ; if ( err ) goto unlock ; } err = memcpy_toiovec ( msg -> msg_iov , ctx -> result , len ) ; unlock : release_sock ( sk ) ; return err ? : len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= MSG_TRUNC ; msg -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28941\n\n```\nCWE-763 static int spk_ttyio_ldisc_open ( struct tty_struct * tty ) { struct spk_ldisc_data * ldisc_data ; if ( ! tty -> ops -> write ) return - EOPNOTSUPP ; <S2SV_StartBug> speakup_tty = tty ; <S2SV_EndBug> ldisc_data = kmalloc ( sizeof ( * ldisc_data ) , GFP_KERNEL ) ; <S2SV_StartBug> if ( ! ldisc_data ) <S2SV_EndBug> <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> init_completion ( & ldisc_data -> completion ) ; ldisc_data -> buf_free = true ; speakup_tty -> disc_data = ldisc_data ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EOPNOTSUPP ; mutex_lock ( & speakup_tty_mutex ) ; if ( speakup_tty ) { mutex_unlock ( & speakup_tty_mutex ) ; return - EBUSY ; } <S2SV_ModStart> ! ldisc_data ) { speakup_tty = NULL ; mutex_unlock ( & speakup_tty_mutex ) ; <S2SV_ModStart> - ENOMEM ; } <S2SV_ModStart> = ldisc_data ; mutex_unlock ( & speakup_tty_mutex ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6704\n\n```\nCWE-119 int sock_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; int val ; int valbool ; struct linger ling ; int ret = 0 ; if ( optname == SO_BINDTODEVICE ) return sock_bindtodevice ( sk , optval , optlen ) ; if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; valbool = val ? 1 : 0 ; lock_sock ( sk ) ; switch ( optname ) { case SO_DEBUG : if ( val && ! capable ( CAP_NET_ADMIN ) ) ret = - EACCES ; else sock_valbool_flag ( sk , SOCK_DBG , valbool ) ; break ; case SO_REUSEADDR : sk -> sk_reuse = ( valbool ? SK_CAN_REUSE : SK_NO_REUSE ) ; break ; case SO_TYPE : case SO_PROTOCOL : case SO_DOMAIN : case SO_ERROR : ret = - ENOPROTOOPT ; break ; case SO_DONTROUTE : sock_valbool_flag ( sk , SOCK_LOCALROUTE , valbool ) ; break ; case SO_BROADCAST : sock_valbool_flag ( sk , SOCK_BROADCAST , valbool ) ; break ; case SO_SNDBUF : <S2SV_StartBug> if ( val > sysctl_wmem_max ) <S2SV_EndBug> val = sysctl_wmem_max ; set_sndbuf : sk -> sk_userlocks |= SOCK_SNDBUF_LOCK ; <S2SV_StartBug> if ( ( val * 2 ) < SOCK_MIN_SNDBUF ) <S2SV_EndBug> sk -> sk_sndbuf = SOCK_MIN_SNDBUF ; else sk -> sk_sndbuf = val * 2 ; sk -> sk_write_space ( sk ) ; break ; case SO_SNDBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_sndbuf ; case SO_RCVBUF : <S2SV_StartBug> if ( val > sysctl_rmem_max ) <S2SV_EndBug> val = sysctl_rmem_max ; set_rcvbuf : sk -> sk_userlocks |= SOCK_RCVBUF_LOCK ; <S2SV_StartBug> if ( ( val * 2 ) < SOCK_MIN_RCVBUF ) <S2SV_EndBug> sk -> sk_rcvbuf = SOCK_MIN_RCVBUF ; else sk -> sk_rcvbuf = val * 2 ; break ; case SO_RCVBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_rcvbuf ; case SO_KEEPALIVE : # ifdef CONFIG_INET if ( sk -> sk_protocol == IPPROTO_TCP ) tcp_set_keepalive ( sk , valbool ) ; # endif sock_valbool_flag ( sk , SOCK_KEEPOPEN , valbool ) ; break ; case SO_OOBINLINE : sock_valbool_flag ( sk , SOCK_URGINLINE , valbool ) ; break ; case SO_NO_CHECK : sk -> sk_no_check = valbool ; break ; case SO_PRIORITY : if ( ( val >= 0 && val <= 6 ) || capable ( CAP_NET_ADMIN ) ) sk -> sk_priority = val ; else ret = - EPERM ; break ; case SO_LINGER : if ( optlen < sizeof ( ling ) ) { ret = - EINVAL ; break ; } if ( copy_from_user ( & ling , optval , sizeof ( ling ) ) ) { ret = - EFAULT ; break ; } if ( ! ling . l_onoff ) sock_reset_flag ( sk , SOCK_LINGER ) ; else { # if ( BITS_PER_LONG == 32 ) if ( ( unsigned int ) ling . l_linger >= MAX_SCHEDULE_TIMEOUT / HZ ) sk -> sk_lingertime = MAX_SCHEDULE_TIMEOUT ; else # endif sk -> sk_lingertime = ( unsigned int ) ling . l_linger * HZ ; sock_set_flag ( sk , SOCK_LINGER ) ; } break ; case SO_BSDCOMPAT : sock_warn_obsolete_bsdism ( \"setsockopt\" ) ; break ; case SO_PASSCRED : if ( valbool ) set_bit ( SOCK_PASSCRED , & sock -> flags ) ; else clear_bit ( SOCK_PASSCRED , & sock -> flags ) ; break ; case SO_TIMESTAMP : case SO_TIMESTAMPNS : if ( valbool ) { if ( optname == SO_TIMESTAMP ) sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; else sock_set_flag ( sk , SOCK_RCVTSTAMPNS ) ; sock_set_flag ( sk , SOCK_RCVTSTAMP ) ; sock_enable_timestamp ( sk , SOCK_TIMESTAMP ) ; } else { sock_reset_flag ( sk , SOCK_RCVTSTAMP ) ; sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; } break ; case SO_TIMESTAMPING : if ( val & ~ SOF_TIMESTAMPING_MASK ) { ret = - EINVAL ; break ; } sock_valbool_flag ( sk , SOCK_TIMESTAMPING_TX_HARDWARE , val & SOF_TIMESTAMPING_TX_HARDWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_TX_SOFTWARE , val & SOF_TIMESTAMPING_TX_SOFTWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_RX_HARDWARE , val & SOF_TIMESTAMPING_RX_HARDWARE ) ; if ( val & SOF_TIMESTAMPING_RX_SOFTWARE ) sock_enable_timestamp ( sk , SOCK_TIMESTAMPING_RX_SOFTWARE ) ; else sock_disable_timestamp ( sk , ( 1UL << SOCK_TIMESTAMPING_RX_SOFTWARE ) ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_SOFTWARE , val & SOF_TIMESTAMPING_SOFTWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_SYS_HARDWARE , val & SOF_TIMESTAMPING_SYS_HARDWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_RAW_HARDWARE , val & SOF_TIMESTAMPING_RAW_HARDWARE ) ; break ; case SO_RCVLOWAT : if ( val < 0 ) val = INT_MAX ; sk -> sk_rcvlowat = val ? : 1 ; break ; case SO_RCVTIMEO : ret = sock_set_timeout ( & sk -> sk_rcvtimeo , optval , optlen ) ; break ; case SO_SNDTIMEO : ret = sock_set_timeout ( & sk -> sk_sndtimeo , optval , optlen ) ; break ; case SO_ATTACH_FILTER : ret = - EINVAL ; if ( optlen == sizeof ( struct sock_fprog ) ) { struct sock_fprog fprog ; ret = - EFAULT ; if ( copy_from_user ( & fprog , optval , sizeof ( fprog ) ) ) break ; ret = sk_attach_filter ( & fprog , sk ) ; } break ; case SO_DETACH_FILTER : ret = sk_detach_filter ( sk ) ; break ; case SO_PASSSEC : if ( valbool ) set_bit ( SOCK_PASSSEC , & sock -> flags ) ; else clear_bit ( SOCK_PASSSEC , & sock -> flags ) ; break ; case SO_MARK : if ( ! capable ( CAP_NET_ADMIN ) ) ret = - EPERM ; else sk -> sk_mark = val ; break ; case SO_RXQ_OVFL : sock_valbool_flag ( sk , SOCK_RXQ_OVFL , valbool ) ; break ; case SO_WIFI_STATUS : sock_valbool_flag ( sk , SOCK_WIFI_STATUS , valbool ) ; break ; case SO_PEEK_OFF : if ( sock -> ops -> set_peek_off ) sock -> ops -> set_peek_off ( sk , val ) ; else ret = - EOPNOTSUPP ; break ; case SO_NOFCS : sock_valbool_flag ( sk , SOCK_NOFCS , valbool ) ; break ; default : ret = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case SO_SNDBUF : val = min_t ( u32 , val , sysctl_wmem_max ) <S2SV_ModEnd> ; set_sndbuf : <S2SV_ModStart> |= SOCK_SNDBUF_LOCK ; sk -> sk_sndbuf = max_t ( u32 , <S2SV_ModEnd> val * 2 <S2SV_ModStart> val * 2 , SOCK_MIN_SNDBUF ) <S2SV_ModEnd> ; sk -> <S2SV_ModStart> case SO_RCVBUF : val = min_t ( u32 , val , sysctl_rmem_max ) <S2SV_ModEnd> ; set_rcvbuf : <S2SV_ModStart> |= SOCK_RCVBUF_LOCK ; sk -> sk_rcvbuf = max_t ( u32 , <S2SV_ModEnd> val * 2 <S2SV_ModStart> val * 2 , SOCK_MIN_RCVBUF ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int pgx_gethdr ( jas_stream_t * in , pgx_hdr_t * hdr ) { int c ; <S2SV_StartBug> uchar buf [ 2 ] ; <S2SV_EndBug> if ( ( c = jas_stream_getc ( in ) ) == EOF ) { goto error ; } buf [ 0 ] = c ; if ( ( c = jas_stream_getc ( in ) ) == EOF ) { goto error ; } buf [ 1 ] = c ; hdr -> magic = buf [ 0 ] << 8 | buf [ 1 ] ; if ( hdr -> magic != PGX_MAGIC ) { jas_eprintf ( \"invalid<S2SV_blank>PGX<S2SV_blank>signature\\\\n\" ) ; goto error ; } if ( ( c = pgx_getc ( in ) ) == EOF || ! isspace ( c ) ) { goto error ; } if ( pgx_getbyteorder ( in , & hdr -> bigendian ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>byte<S2SV_blank>order\\\\n\" ) ; goto error ; } if ( pgx_getsgnd ( in , & hdr -> sgnd ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>signedness\\\\n\" ) ; goto error ; } if ( pgx_getuint32 ( in , & hdr -> prec ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>precision\\\\n\" ) ; goto error ; } if ( pgx_getuint32 ( in , & hdr -> width ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>width\\\\n\" ) ; goto error ; } if ( pgx_getuint32 ( in , & hdr -> height ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>height\\\\n\" ) ; goto error ; } return 0 ; error : return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int c ; jas_uchar <S2SV_ModEnd> buf [ 2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int tok_nextc ( struct tok_state * tok ) { for ( ; ; ) { if ( tok -> cur != tok -> inp ) { return Py_CHARMASK ( * tok -> cur ++ ) ; } if ( tok -> done != E_OK ) return EOF ; if ( tok -> fp == NULL ) { char * end = strchr ( tok -> inp , '\\\\n' ) ; if ( end != NULL ) end ++ ; else { end = strchr ( tok -> inp , '\\\\0' ) ; if ( end == tok -> inp ) { tok -> done = E_EOF ; return EOF ; } } if ( tok -> start == NULL ) tok -> buf = tok -> cur ; tok -> line_start = tok -> cur ; tok -> lineno ++ ; tok -> inp = end ; return Py_CHARMASK ( * tok -> cur ++ ) ; } if ( tok -> prompt != NULL ) { char * newtok = PyOS_Readline ( stdin , stdout , tok -> prompt ) ; # ifndef PGEN if ( newtok != NULL ) { char * translated = translate_newlines ( newtok , 0 , tok ) ; PyMem_FREE ( newtok ) ; if ( translated == NULL ) return EOF ; newtok = translated ; } if ( tok -> encoding && newtok && * newtok ) { Py_ssize_t buflen ; const char * buf ; PyObject * u = translate_into_utf8 ( newtok , tok -> encoding ) ; PyMem_FREE ( newtok ) ; if ( ! u ) { tok -> done = E_DECODE ; return EOF ; } buflen = PyBytes_GET_SIZE ( u ) ; buf = PyBytes_AS_STRING ( u ) ; <S2SV_StartBug> newtok = PyMem_MALLOC ( buflen + 1 ) ; <S2SV_EndBug> strcpy ( newtok , buf ) ; Py_DECREF ( u ) ; } # endif if ( tok -> nextprompt != NULL ) tok -> prompt = tok -> nextprompt ; if ( newtok == NULL ) tok -> done = E_INTR ; else if ( * newtok == '\\\\0' ) { PyMem_FREE ( newtok ) ; tok -> done = E_EOF ; } else if ( tok -> start != NULL ) { size_t start = tok -> start - tok -> buf ; size_t oldlen = tok -> cur - tok -> buf ; size_t newlen = oldlen + strlen ( newtok ) ; char * buf = tok -> buf ; buf = ( char * ) PyMem_REALLOC ( buf , newlen + 1 ) ; tok -> lineno ++ ; if ( buf == NULL ) { PyMem_FREE ( tok -> buf ) ; tok -> buf = NULL ; PyMem_FREE ( newtok ) ; tok -> done = E_NOMEM ; return EOF ; } tok -> buf = buf ; tok -> cur = tok -> buf + oldlen ; tok -> line_start = tok -> cur ; strcpy ( tok -> buf + oldlen , newtok ) ; PyMem_FREE ( newtok ) ; tok -> inp = tok -> buf + newlen ; tok -> end = tok -> inp + 1 ; tok -> start = tok -> buf + start ; } else { tok -> lineno ++ ; if ( tok -> buf != NULL ) PyMem_FREE ( tok -> buf ) ; tok -> buf = newtok ; tok -> cur = tok -> buf ; tok -> line_start = tok -> buf ; tok -> inp = strchr ( tok -> buf , '\\\\0' ) ; tok -> end = tok -> inp + 1 ; } } else { int done = 0 ; Py_ssize_t cur = 0 ; char * pt ; if ( tok -> start == NULL ) { if ( tok -> buf == NULL ) { tok -> buf = ( char * ) PyMem_MALLOC ( BUFSIZ ) ; if ( tok -> buf == NULL ) { tok -> done = E_NOMEM ; return EOF ; } tok -> end = tok -> buf + BUFSIZ ; } if ( decoding_fgets ( tok -> buf , ( int ) ( tok -> end - tok -> buf ) , tok ) == NULL ) { if ( ! tok -> decoding_erred ) tok -> done = E_EOF ; done = 1 ; } else { tok -> done = E_OK ; tok -> inp = strchr ( tok -> buf , '\\\\0' ) ; done = tok -> inp == tok -> buf || tok -> inp [ - 1 ] == '\\\\n' ; } } else { cur = tok -> cur - tok -> buf ; if ( decoding_feof ( tok ) ) { tok -> done = E_EOF ; done = 1 ; } else tok -> done = E_OK ; } tok -> lineno ++ ; while ( ! done ) { Py_ssize_t curstart = tok -> start == NULL ? - 1 : tok -> start - tok -> buf ; Py_ssize_t curvalid = tok -> inp - tok -> buf ; Py_ssize_t newsize = curvalid + BUFSIZ ; char * newbuf = tok -> buf ; newbuf = ( char * ) PyMem_REALLOC ( newbuf , newsize ) ; if ( newbuf == NULL ) { tok -> done = E_NOMEM ; tok -> cur = tok -> inp ; return EOF ; } tok -> buf = newbuf ; tok -> cur = tok -> buf + cur ; tok -> line_start = tok -> cur ; tok -> inp = tok -> buf + curvalid ; tok -> end = tok -> buf + newsize ; tok -> start = curstart < 0 ? NULL : tok -> buf + curstart ; if ( decoding_fgets ( tok -> inp , ( int ) ( tok -> end - tok -> inp ) , tok ) == NULL ) { if ( tok -> decoding_erred ) return EOF ; strcpy ( tok -> inp , \"\\\\n\" ) ; } tok -> inp = strchr ( tok -> inp , '\\\\0' ) ; done = tok -> inp [ - 1 ] == '\\\\n' ; } if ( tok -> buf != NULL ) { tok -> cur = tok -> buf + cur ; tok -> line_start = tok -> cur ; pt = tok -> inp - 2 ; if ( pt >= tok -> buf && * pt == '\\\\r' ) { * pt ++ = '\\\\n' ; * pt = '\\\\0' ; tok -> inp = pt ; } } } if ( tok -> done != E_OK ) { if ( tok -> prompt != NULL ) PySys_WriteStderr ( \"\\\\n\" ) ; tok -> cur = tok -> inp ; return EOF ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( newtok == NULL ) { Py_DECREF ( u ) ; tok -> done = E_NOMEM ; return EOF ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 int ext4_punch_hole ( struct inode * inode , loff_t offset , loff_t length ) { struct super_block * sb = inode -> i_sb ; ext4_lblk_t first_block , stop_block ; struct address_space * mapping = inode -> i_mapping ; loff_t first_block_offset , last_block_offset ; handle_t * handle ; unsigned int credits ; int ret = 0 ; if ( ! S_ISREG ( inode -> i_mode ) ) return - EOPNOTSUPP ; trace_ext4_punch_hole ( inode , offset , length , 0 ) ; if ( mapping -> nrpages && mapping_tagged ( mapping , PAGECACHE_TAG_DIRTY ) ) { ret = filemap_write_and_wait_range ( mapping , offset , offset + length - 1 ) ; if ( ret ) return ret ; } mutex_lock ( & inode -> i_mutex ) ; if ( offset >= inode -> i_size ) goto out_mutex ; if ( offset + length > inode -> i_size ) { length = inode -> i_size + PAGE_CACHE_SIZE - ( inode -> i_size & ( PAGE_CACHE_SIZE - 1 ) ) - offset ; } if ( offset & ( sb -> s_blocksize - 1 ) || ( offset + length ) & ( sb -> s_blocksize - 1 ) ) { ret = ext4_inode_attach_jinode ( inode ) ; if ( ret < 0 ) goto out_mutex ; } <S2SV_StartBug> first_block_offset = round_up ( offset , sb -> s_blocksize ) ; <S2SV_EndBug> last_block_offset = round_down ( ( offset + length ) , sb -> s_blocksize ) - 1 ; if ( last_block_offset > first_block_offset ) truncate_pagecache_range ( inode , first_block_offset , last_block_offset ) ; <S2SV_StartBug> ext4_inode_block_unlocked_dio ( inode ) ; <S2SV_EndBug> inode_dio_wait ( inode ) ; if ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) credits = ext4_writepage_trans_blocks ( inode ) ; else credits = ext4_blocks_for_truncate ( inode ) ; handle = ext4_journal_start ( inode , EXT4_HT_TRUNCATE , credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; ext4_std_error ( sb , ret ) ; goto out_dio ; } ret = ext4_zero_partial_blocks ( handle , inode , offset , length ) ; if ( ret ) goto out_stop ; first_block = ( offset + sb -> s_blocksize - 1 ) >> EXT4_BLOCK_SIZE_BITS ( sb ) ; stop_block = ( offset + length ) >> EXT4_BLOCK_SIZE_BITS ( sb ) ; if ( first_block >= stop_block ) goto out_stop ; down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; ext4_discard_preallocations ( inode ) ; ret = ext4_es_remove_extent ( inode , first_block , stop_block - first_block ) ; if ( ret ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } if ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ret = ext4_ext_remove_space ( inode , first_block , stop_block - 1 ) ; else ret = ext4_ind_remove_space ( handle , inode , first_block , stop_block ) ; up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( IS_SYNC ( inode ) ) ext4_handle_sync ( handle ) ; <S2SV_StartBug> if ( last_block_offset > first_block_offset ) <S2SV_EndBug> truncate_pagecache_range ( inode , first_block_offset , last_block_offset ) ; inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; ext4_mark_inode_dirty ( handle , inode ) ; out_stop : ext4_journal_stop ( handle ) ; out_dio : <S2SV_StartBug> ext4_inode_resume_unlocked_dio ( inode ) ; <S2SV_EndBug> out_mutex : mutex_unlock ( & inode -> i_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_mutex ; } ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> last_block_offset ) ; <S2SV_ModEnd> if ( ext4_test_inode_flag <S2SV_ModStart> handle ) ; <S2SV_ModEnd> inode -> i_mtime <S2SV_ModStart> ; out_dio : up_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6701\n\n```\nCWE-000 static ssize_t aio_setup_vectored_rw ( int type , struct kiocb * kiocb , bool compat ) { ssize_t ret ; # ifdef CONFIG_COMPAT if ( compat ) ret = compat_rw_copy_check_uvector ( type , ( struct compat_iovec __user * ) kiocb -> ki_buf , kiocb -> ki_nbytes , 1 , & kiocb -> ki_inline_vec , & kiocb -> ki_iovec , 1 ) ; else # endif ret = rw_copy_check_uvector ( type , ( struct iovec __user * ) kiocb -> ki_buf , kiocb -> ki_nbytes , 1 , & kiocb -> ki_inline_vec , & kiocb -> ki_iovec , 1 ) ; if ( ret < 0 ) goto out ; <S2SV_StartBug> kiocb -> ki_nr_segs = kiocb -> ki_nbytes ; <S2SV_EndBug> kiocb -> ki_cur_seg = 0 ; kiocb -> ki_nbytes = ret ; kiocb -> ki_left = ret ; ret = 0 ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; ret = rw_verify_area ( type , kiocb -> ki_filp , & kiocb -> ki_pos , ret ) ; if ( ret < 0 ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t decode_one ( vpx_codec_alg_priv_t * ctx , const uint8_t * * data , unsigned int data_sz , void * user_priv , int64_t deadline ) { <S2SV_StartBug> YV12_BUFFER_CONFIG sd = { 0 } ; <S2SV_EndBug> int64_t time_stamp = 0 , time_end_stamp = 0 ; vp9_ppflags_t flags = { 0 } ; VP9_COMMON * cm = NULL ; ctx -> img_avail = 0 ; if ( ! ctx -> si . h ) { <S2SV_StartBug> const vpx_codec_err_t res = <S2SV_EndBug> <S2SV_StartBug> ctx -> base . iface -> dec . peek_si ( * data , data_sz , & ctx -> si ) ; <S2SV_EndBug> if ( res != VPX_CODEC_OK ) return res ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> if ( ! ctx -> decoder_init ) { <S2SV_EndBug> init_decoder ( ctx ) ; <S2SV_StartBug> if ( ctx -> pbi == NULL ) <S2SV_EndBug> return VPX_CODEC_ERROR ; ctx -> decoder_init = 1 ; <S2SV_StartBug> } <S2SV_EndBug> cm = & ctx -> pbi -> common ; if ( vp9_receive_compressed_data ( ctx -> pbi , data_sz , data , deadline ) ) return update_error_state ( ctx , & cm -> error ) ; if ( ctx -> base . init_flags & VPX_CODEC_USE_POSTPROC ) set_ppflags ( ctx , & flags ) ; if ( vp9_get_raw_frame ( ctx -> pbi , & sd , & time_stamp , & time_end_stamp , & flags ) ) return update_error_state ( ctx , & cm -> error ) ; yuvconfig2image ( & ctx -> img , & sd , user_priv ) ; ctx -> img . fb_priv = cm -> frame_bufs [ cm -> new_fb_idx ] . raw_frame_buffer . priv ; ctx -> img_avail = 1 ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> deadline ) { const VPxWorkerInterface * const winterface = vpx_get_worker_interface ( ) ; ( void ) deadline <S2SV_ModEnd> ; if ( <S2SV_ModStart> h ) { int is_intra_only = 0 ; <S2SV_ModStart> vpx_codec_err_t res = decoder_peek_si_internal <S2SV_ModEnd> ( * data <S2SV_ModStart> ctx -> si , & is_intra_only , ctx -> decrypt_cb , ctx -> decrypt_state <S2SV_ModStart> return res ; if ( ! ctx -> si . is_kf && ! is_intra_only ) return VPX_CODEC_ERROR ; <S2SV_ModStart> ! ctx -> frame_parallel_decode ) { VPxWorker * const worker = ctx -> frame_workers ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; frame_worker_data -> data = * data ; frame_worker_data -> data_size = data_sz ; frame_worker_data -> user_priv = user_priv ; frame_worker_data -> received_frame = 1 ; frame_worker_data -> pbi -> decrypt_cb = ctx -> decrypt_cb ; frame_worker_data -> pbi -> decrypt_state = ctx -> decrypt_state ; worker -> had_error = 0 ; winterface -> execute ( worker ) ; * data = frame_worker_data -> data_end ; if ( worker -> had_error ) return update_error_state ( ctx , & frame_worker_data -> pbi -> common . error ) ; check_resync ( ctx , frame_worker_data -> pbi ) ; } else { VPxWorker * const worker = & ctx -> frame_workers [ ctx -> next_submit_worker_id ] ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; if ( ctx -> next_submit_worker_id != ctx -> last_submit_worker_id ) vp9_frameworker_copy_context ( & ctx -> frame_workers [ ctx -> next_submit_worker_id ] , & ctx -> frame_workers [ ctx -> last_submit_worker_id ] ) ; frame_worker_data -> pbi -> ready_for_new_data = 0 ; if ( frame_worker_data -> scratch_buffer_size < data_sz ) { frame_worker_data -> scratch_buffer = ( uint8_t * ) vpx_realloc ( frame_worker_data -> scratch_buffer , data_sz ) ; if ( frame_worker_data -> scratch_buffer <S2SV_ModEnd> == NULL ) <S2SV_ModStart> == NULL ) { set_error_detail ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>reallocate<S2SV_blank>scratch<S2SV_blank>buffer\" ) ; return VPX_CODEC_MEM_ERROR ; } frame_worker_data -> scratch_buffer_size = data_sz ; } frame_worker_data -> data_size = data_sz ; memcpy ( frame_worker_data -> scratch_buffer , * data , data_sz ) ; frame_worker_data -> frame_decoded = 0 ; frame_worker_data -> frame_context_ready = 0 ; frame_worker_data -> received_frame <S2SV_ModEnd> = 1 ; <S2SV_ModStart> = 1 ; frame_worker_data -> data = frame_worker_data -> scratch_buffer ; frame_worker_data -> user_priv = user_priv ; if ( ctx -> next_submit_worker_id != ctx -> last_submit_worker_id ) ctx -> last_submit_worker_id = ( ctx -> last_submit_worker_id + 1 ) % ctx -> num_frame_workers ; ctx -> next_submit_worker_id = ( ctx -> next_submit_worker_id + 1 ) % ctx -> num_frame_workers ; -- ctx -> available_threads ; worker -> had_error = 0 ; winterface -> launch ( worker ) ; } <S2SV_ModEnd> return VPX_CODEC_OK ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7254\n\n```\nCWE-125 int ParseCaffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { uint32_t chan_chunk = 0 , channel_layout = 0 , bcount ; unsigned char * channel_identities = NULL ; unsigned char * channel_reorder = NULL ; int64_t total_samples = 0 , infilesize ; CAFFileHeader caf_file_header ; CAFChunkHeader caf_chunk_header ; CAFAudioFormat caf_audio_format ; int i ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & caf_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & caf_file_header ) + 4 , sizeof ( CAFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( CAFFileHeader ) - 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_file_header , sizeof ( CAFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_file_header , CAFFileHeaderFormat ) ; if ( caf_file_header . mFileVersion != 1 ) { error_line ( \"%s:<S2SV_blank>can\\'t<S2SV_blank>handle<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>.CAF<S2SV_blank>files!\" , infilename , caf_file_header . mFileVersion ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & caf_chunk_header , sizeof ( CAFChunkHeader ) , & bcount ) || bcount != sizeof ( CAFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_chunk_header , sizeof ( CAFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_chunk_header , CAFChunkHeaderFormat ) ; if ( ! strncmp ( caf_chunk_header . mChunkType , \"desc\" , 4 ) ) { int supported = TRUE ; if ( caf_chunk_header . mChunkSize != sizeof ( CAFAudioFormat ) || ! DoReadFile ( infile , & caf_audio_format , ( uint32_t ) caf_chunk_header . mChunkSize , & bcount ) || bcount != caf_chunk_header . mChunkSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_audio_format , ( uint32_t ) caf_chunk_header . mChunkSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_audio_format , CAFAudioFormatFormat ) ; if ( debug_logging_mode ) { char formatstr [ 5 ] ; memcpy ( formatstr , caf_audio_format . mFormatID , 4 ) ; formatstr [ 4 ] = 0 ; error_line ( \"format<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>flags<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>sampling<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%g\" , formatstr , caf_audio_format . mFormatFlags , caf_audio_format . mSampleRate ) ; error_line ( \"packet<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>and<S2SV_blank>%d<S2SV_blank>frames\" , caf_audio_format . mBytesPerPacket , caf_audio_format . mFramesPerPacket ) ; error_line ( \"channels<S2SV_blank>per<S2SV_blank>frame<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>bits<S2SV_blank>per<S2SV_blank>channel<S2SV_blank>=<S2SV_blank>%d\" , caf_audio_format . mChannelsPerFrame , caf_audio_format . mBitsPerChannel ) ; } if ( strncmp ( caf_audio_format . mFormatID , \"lpcm\" , 4 ) || ( caf_audio_format . mFormatFlags & ~ 3 ) ) supported = FALSE ; else if ( caf_audio_format . mSampleRate < 1.0 || caf_audio_format . mSampleRate > 16777215.0 || caf_audio_format . mSampleRate != floor ( caf_audio_format . mSampleRate ) ) supported = FALSE ; else if ( ! caf_audio_format . mChannelsPerFrame || caf_audio_format . mChannelsPerFrame > 256 ) supported = FALSE ; else if ( caf_audio_format . mBitsPerChannel < 1 || caf_audio_format . mBitsPerChannel > 32 || ( ( caf_audio_format . mFormatFlags & CAF_FORMAT_FLOAT ) && caf_audio_format . mBitsPerChannel != 32 ) ) supported = FALSE ; else if ( caf_audio_format . mFramesPerPacket != 1 || caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame < ( caf_audio_format . mBitsPerChannel + 7 ) / 8 || caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame > 4 || caf_audio_format . mBytesPerPacket % caf_audio_format . mChannelsPerFrame ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.CAF<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } config -> bytes_per_sample = caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame ; config -> float_norm_exp = ( caf_audio_format . mFormatFlags & CAF_FORMAT_FLOAT ) ? 127 : 0 ; config -> bits_per_sample = caf_audio_format . mBitsPerChannel ; config -> num_channels = caf_audio_format . mChannelsPerFrame ; config -> sample_rate = ( int ) caf_audio_format . mSampleRate ; if ( ! ( caf_audio_format . mFormatFlags & CAF_FORMAT_LITTLE_ENDIAN ) && config -> bytes_per_sample > 1 ) config -> qmode |= QMODE_BIG_ENDIAN ; if ( config -> bytes_per_sample == 1 ) config -> qmode |= QMODE_SIGNED_BYTES ; if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>%s-endian<S2SV_blank>floating<S2SV_blank>point\" , ( config -> qmode & QMODE_BIG_ENDIAN ) ? \"big\" : \"little\" ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>%s-endian<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , ( config -> qmode & QMODE_BIG_ENDIAN ) ? \"big\" : \"little\" , config -> bytes_per_sample ) ; } } else if ( ! strncmp ( caf_chunk_header . mChunkType , \"chan\" , 4 ) ) { <S2SV_StartBug> CAFChannelLayout * caf_channel_layout = malloc ( ( size_t ) caf_chunk_header . mChunkSize ) ; <S2SV_EndBug> if ( caf_chunk_header . mChunkSize < sizeof ( CAFChannelLayout ) || <S2SV_StartBug> ! DoReadFile ( infile , caf_channel_layout , ( uint32_t ) caf_chunk_header . mChunkSize , & bcount ) || <S2SV_EndBug> bcount != caf_chunk_header . mChunkSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , caf_channel_layout , ( uint32_t ) caf_chunk_header . mChunkSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( caf_channel_layout , CAFChannelLayoutFormat ) ; chan_chunk = 1 ; if ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { error_line ( \"this<S2SV_blank>CAF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } switch ( caf_channel_layout -> mChannelLayoutTag ) { case kCAFChannelLayoutTag_UseChannelDescriptions : { CAFChannelDescription * descriptions = ( CAFChannelDescription * ) ( caf_channel_layout + 1 ) ; int num_descriptions = caf_channel_layout -> mNumberChannelDescriptions ; int label , cindex = 0 , idents = 0 ; if ( caf_chunk_header . mChunkSize != sizeof ( CAFChannelLayout ) + sizeof ( CAFChannelDescription ) * num_descriptions || num_descriptions != config -> num_channels ) { error_line ( \"channel<S2SV_blank>descriptions<S2SV_blank>in<S2SV_blank>\\'chan\\'<S2SV_blank>chunk<S2SV_blank>are<S2SV_blank>the<S2SV_blank>wrong<S2SV_blank>size!\" ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } if ( num_descriptions >= 256 ) { error_line ( \"%d<S2SV_blank>channel<S2SV_blank>descriptions<S2SV_blank>is<S2SV_blank>more<S2SV_blank>than<S2SV_blank>we<S2SV_blank>can<S2SV_blank>handle...ignoring!\" ) ; break ; } channel_reorder = malloc ( num_descriptions ) ; memset ( channel_reorder , - 1 , num_descriptions ) ; channel_identities = malloc ( num_descriptions + 1 ) ; for ( i = 0 ; i < num_descriptions ; ++ i ) { WavpackBigEndianToNative ( descriptions + i , CAFChannelDescriptionFormat ) ; if ( debug_logging_mode ) error_line ( \"chan<S2SV_blank>%d<S2SV_blank>--><S2SV_blank>%d\" , i + 1 , descriptions [ i ] . mChannelLabel ) ; } for ( label = 1 ; label <= 18 ; ++ label ) for ( i = 0 ; i < num_descriptions ; ++ i ) if ( descriptions [ i ] . mChannelLabel == label ) { config -> channel_mask |= 1 << ( label - 1 ) ; channel_reorder [ i ] = cindex ++ ; break ; } for ( i = 0 ; i < num_descriptions ; ++ i ) if ( channel_reorder [ i ] == ( unsigned char ) - 1 ) { uint32_t clabel = descriptions [ i ] . mChannelLabel ; if ( clabel == 0 || clabel == 0xffffffff || clabel == 100 ) channel_identities [ idents ++ ] = 0xff ; else if ( ( clabel >= 33 && clabel <= 44 ) || ( clabel >= 200 && clabel <= 207 ) || ( clabel >= 301 && clabel <= 305 ) ) channel_identities [ idents ++ ] = clabel >= 301 ? clabel - 80 : clabel ; else { error_line ( \"warning:<S2SV_blank>unknown<S2SV_blank>channel<S2SV_blank>descriptions<S2SV_blank>label:<S2SV_blank>%d\" , clabel ) ; channel_identities [ idents ++ ] = 0xff ; } channel_reorder [ i ] = cindex ++ ; } for ( i = 0 ; i < num_descriptions ; ++ i ) if ( channel_reorder [ i ] != i ) break ; if ( i == num_descriptions ) { free ( channel_reorder ) ; channel_reorder = NULL ; } else { config -> qmode |= QMODE_REORDERED_CHANS ; channel_layout = num_descriptions ; } if ( ! idents ) { free ( channel_identities ) ; channel_identities = NULL ; } else channel_identities [ idents ] = 0 ; if ( debug_logging_mode ) { error_line ( \"layout_tag<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>so<S2SV_blank>generated<S2SV_blank>bitmap<S2SV_blank>of<S2SV_blank>0x%08x<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>descriptions,<S2SV_blank>%d<S2SV_blank>non-MS\" , caf_channel_layout -> mChannelLayoutTag , config -> channel_mask , caf_channel_layout -> mNumberChannelDescriptions , idents ) ; if ( channel_reorder && num_descriptions <= 8 ) { char reorder_string [ ] = \"12345678\" ; for ( i = 0 ; i < num_descriptions ; ++ i ) reorder_string [ i ] = channel_reorder [ i ] + '1' ; reorder_string [ i ] = 0 ; error_line ( \"reordering<S2SV_blank>string<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , reorder_string ) ; } } } break ; case kCAFChannelLayoutTag_UseChannelBitmap : config -> channel_mask = caf_channel_layout -> mChannelBitmap ; if ( debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>so<S2SV_blank>using<S2SV_blank>supplied<S2SV_blank>bitmap<S2SV_blank>of<S2SV_blank>0x%08x\" , caf_channel_layout -> mChannelLayoutTag , caf_channel_layout -> mChannelBitmap ) ; break ; default : for ( i = 0 ; i < NUM_LAYOUTS ; ++ i ) if ( caf_channel_layout -> mChannelLayoutTag == layouts [ i ] . mChannelLayoutTag ) { config -> channel_mask = layouts [ i ] . mChannelBitmap ; channel_layout = layouts [ i ] . mChannelLayoutTag ; if ( layouts [ i ] . mChannelReorder ) { channel_reorder = ( unsigned char * ) strdup ( layouts [ i ] . mChannelReorder ) ; config -> qmode |= QMODE_REORDERED_CHANS ; } if ( layouts [ i ] . mChannelIdentities ) channel_identities = ( unsigned char * ) strdup ( layouts [ i ] . mChannelIdentities ) ; if ( debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>0x%08x<S2SV_blank>found<S2SV_blank>in<S2SV_blank>table,<S2SV_blank>bitmap<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>reorder<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>identities<S2SV_blank>=<S2SV_blank>%s\" , channel_layout , config -> channel_mask , channel_reorder ? \"yes\" : \"no\" , channel_identities ? \"yes\" : \"no\" ) ; break ; } if ( i == NUM_LAYOUTS && debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>0x%08x<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>table...all<S2SV_blank>channels<S2SV_blank>unassigned\" , caf_channel_layout -> mChannelLayoutTag ) ; break ; } free ( caf_channel_layout ) ; } else if ( ! strncmp ( caf_chunk_header . mChunkType , \"data\" , 4 ) ) { uint32_t mEditCount ; if ( ! DoReadFile ( infile , & mEditCount , sizeof ( mEditCount ) , & bcount ) || bcount != sizeof ( mEditCount ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & mEditCount , sizeof ( mEditCount ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } if ( ( config -> qmode & QMODE_IGNORE_LENGTH ) || caf_chunk_header . mChunkSize == - 1 ) { config -> qmode |= QMODE_IGNORE_LENGTH ; if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / caf_audio_format . mBytesPerPacket ; else total_samples = - 1 ; } else { if ( infilesize && infilesize - caf_chunk_header . mChunkSize > 16777216 ) { error_line ( \".CAF<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>CAFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ( caf_chunk_header . mChunkSize - 4 ) % caf_audio_format . mBytesPerPacket ) { error_line ( \".CAF<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>data<S2SV_blank>chunk<S2SV_blank>size,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } total_samples = ( caf_chunk_header . mChunkSize - 4 ) / caf_audio_format . mBytesPerPacket ; if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.CAF<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } break ; } else { <S2SV_StartBug> int bytes_to_copy = ( uint32_t ) caf_chunk_header . mChunkSize ; <S2SV_EndBug> <S2SV_StartBug> char * buff = malloc ( bytes_to_copy ) ; <S2SV_EndBug> if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , caf_chunk_header . mChunkType [ 0 ] , caf_chunk_header . mChunkType [ 1 ] , caf_chunk_header . mChunkType [ 2 ] , caf_chunk_header . mChunkType [ 3 ] , caf_chunk_header . mChunkSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! chan_chunk && ! config -> channel_mask && config -> num_channels <= 2 && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) config -> channel_mask = 0x5 - config -> num_channels ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , channel_identities ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } if ( channel_identities ) free ( channel_identities ) ; if ( channel_layout || channel_reorder ) { if ( ! WavpackSetChannelLayout ( wpc , channel_layout , channel_reorder ) ) { error_line ( \"problem<S2SV_blank>with<S2SV_blank>setting<S2SV_blank>channel<S2SV_blank>layout<S2SV_blank>(should<S2SV_blank>not<S2SV_blank>happen)\" ) ; return WAVPACK_SOFT_ERROR ; } if ( channel_reorder ) free ( channel_reorder ) ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CAFChannelLayout * caf_channel_layout <S2SV_ModEnd> ; if ( <S2SV_ModStart> CAFChannelLayout ) || caf_chunk_header . mChunkSize > 1024 ) { error_line ( \"this<S2SV_blank>.CAF<S2SV_blank>file<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>\\'chan\\'<S2SV_blank>chunk!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"\\'chan\\'<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes\" , ( int ) caf_chunk_header . mChunkSize ) ; caf_channel_layout = malloc ( ( size_t ) caf_chunk_header . mChunkSize ) ; if ( <S2SV_ModStart> } else { uint32_t <S2SV_ModEnd> bytes_to_copy = ( <S2SV_ModStart> ; char * buff ; if ( caf_chunk_header . mChunkSize < 0 || caf_chunk_header . mChunkSize > 1048576 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void sync_lockstate_on_connect ( btif_hh_device_t * p_dev ) { int keylockstates ; BTIF_TRACE_EVENT ( \"%s:<S2SV_blank>Syncing<S2SV_blank>keyboard<S2SV_blank>lock<S2SV_blank>states<S2SV_blank>after<S2SV_blank>\" \"reconnect...\" , __FUNCTION__ ) ; update_keyboard_lockstates ( p_dev ) ; keylockstates = get_keylockstates ( ) ; if ( keylockstates ) { BTIF_TRACE_DEBUG ( \"%s:<S2SV_blank>Sending<S2SV_blank>hid<S2SV_blank>report<S2SV_blank>to<S2SV_blank>kernel<S2SV_blank>\" \"indicating<S2SV_blank>lock<S2SV_blank>key<S2SV_blank>state<S2SV_blank>0x%x\" , __FUNCTION__ , keylockstates ) ; <S2SV_StartBug> usleep ( 200000 ) ; <S2SV_EndBug> toggle_os_keylockstates ( p_dev -> fd , keylockstates ) ; } else { BTIF_TRACE_DEBUG ( \"%s:<S2SV_blank>NOT<S2SV_blank>sending<S2SV_blank>hid<S2SV_blank>report<S2SV_blank>to<S2SV_blank>kernel<S2SV_blank>\" \"indicating<S2SV_blank>lock<S2SV_blank>key<S2SV_blank>state<S2SV_blank>0x%x\" , __FUNCTION__ , keylockstates ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> keylockstates ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> usleep ( 200000 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int do_16x16_zerozero_search ( VP9_COMP * cpi , int_mv * dst_mv ) { <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; unsigned int err ; <S2SV_StartBug> err = vp9_sad16x16 ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , <S2SV_EndBug> <S2SV_StartBug> xd -> plane [ 0 ] . pre [ 0 ] . buf , xd -> plane [ 0 ] . pre [ 0 ] . stride , <S2SV_EndBug> INT_MAX ) ; dst_mv -> as_int = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & cpi -> td . <S2SV_ModStart> ; err = vpx_sad16x16 <S2SV_ModEnd> ( x -> <S2SV_ModStart> ] . stride <S2SV_ModEnd> ) ; dst_mv\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_stmt ( PyObject * obj , stmt_ty * out , PyArena * arena ) { int isinstance ; PyObject * tmp = NULL ; int lineno ; int col_offset ; if ( obj == Py_None ) { * out = NULL ; return 0 ; } <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_lineno ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_lineno ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_int ( tmp , & lineno , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>stmt\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_col_offset ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_col_offset ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & col_offset , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>stmt\" ) ; return 1 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) FunctionDef_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier name ; arguments_ty args ; asdl_seq * body ; asdl_seq * decorator_list ; expr_ty returns ; string type_comment ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_name ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_name ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_args ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_args ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_arguments ( tmp , & args , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"FunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"FunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_decorator_list ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_decorator_list ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"FunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; decorator_list = _Ta3_asdl_seq_new ( len , arena ) ; if ( decorator_list == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"FunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( decorator_list , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_returns ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_returns ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & returns , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { returns = NULL ; } if ( exists_not_none ( obj , & PyId_type_comment ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_type_comment ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { type_comment = NULL ; } * out = FunctionDef ( name , args , body , decorator_list , returns , type_comment , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AsyncFunctionDef_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier name ; arguments_ty args ; asdl_seq * body ; asdl_seq * decorator_list ; expr_ty returns ; string type_comment ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_name ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_name ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_args ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_args ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_arguments ( tmp , & args , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncFunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncFunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_decorator_list ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_decorator_list ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncFunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; decorator_list = _Ta3_asdl_seq_new ( len , arena ) ; if ( decorator_list == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncFunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( decorator_list , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_returns ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_returns ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & returns , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { returns = NULL ; } if ( exists_not_none ( obj , & PyId_type_comment ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_type_comment ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { type_comment = NULL ; } * out = AsyncFunctionDef ( name , args , body , decorator_list , returns , type_comment , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) ClassDef_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier name ; asdl_seq * bases ; asdl_seq * keywords ; asdl_seq * body ; asdl_seq * decorator_list ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_name ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_name ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_bases ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_bases ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"bases\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; bases = _Ta3_asdl_seq_new ( len , arena ) ; if ( bases == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"bases\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( bases , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"bases\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_keywords ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_keywords ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; keywords = _Ta3_asdl_seq_new ( len , arena ) ; if ( keywords == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> keyword_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_keyword ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( keywords , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_decorator_list ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_decorator_list ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; decorator_list = _Ta3_asdl_seq_new ( len , arena ) ; if ( decorator_list == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( decorator_list , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } * out = ClassDef ( name , bases , keywords , body , decorator_list , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Return_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { value = NULL ; } * out = Return ( value , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Delete_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * targets ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_targets ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_targets ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Delete<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; targets = _Ta3_asdl_seq_new ( len , arena ) ; if ( targets == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Delete<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( targets , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Delete\" ) ; return 1 ; } * out = Delete ( targets , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Assign_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * targets ; expr_ty value ; string type_comment ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_targets ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_targets ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Assign<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; targets = _Ta3_asdl_seq_new ( len , arena ) ; if ( targets == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Assign<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( targets , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assign\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assign\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_type_comment ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_type_comment ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { type_comment = NULL ; } * out = Assign ( targets , value , type_comment , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AugAssign_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty target ; operator_ty op ; expr_ty value ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_target ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_target ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & target , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_op ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_op ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_operator ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } * out = AugAssign ( target , op , value , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AnnAssign_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty target ; expr_ty annotation ; expr_ty value ; int simple ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_target ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_target ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & target , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; <S2SV_EndBug> return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_annotation ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_annotation ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & annotation , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"annotation\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_value ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { value = NULL ; } if ( _PyObject_HasAttrId ( obj , & PyId_simple ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_simple ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & simple , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"simple\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; return 1 ; } * out = AnnAssign ( target , annotation , value , simple , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) For_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty target ; expr_ty iter ; asdl_seq * body ; asdl_seq * orelse ; string type_comment ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_target ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_target ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & target , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_iter ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_iter ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & iter , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"iter\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"For<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"For<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_orelse ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_orelse ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"For<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Ta3_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"For<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( orelse , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_type_comment ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_type_comment ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { type_comment = NULL ; } * out = For ( target , iter , body , orelse , type_comment , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AsyncFor_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty target ; expr_ty iter ; asdl_seq * body ; asdl_seq * orelse ; string type_comment ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_target ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_target ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & target , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_iter ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_iter ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & iter , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"iter\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncFor<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncFor<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_orelse ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_orelse ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncFor<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Ta3_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncFor<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( orelse , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_type_comment ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_type_comment ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { type_comment = NULL ; } * out = AsyncFor ( target , iter , body , orelse , type_comment , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) While_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty test ; asdl_seq * body ; asdl_seq * orelse ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_test ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_test ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"While<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"While<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_orelse ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_orelse ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"While<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Ta3_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"While<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( orelse , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } * out = While ( test , body , orelse , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) If_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty test ; asdl_seq * body ; asdl_seq * orelse ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_test ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_test ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"If<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"If<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_orelse ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_orelse ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"If<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Ta3_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"If<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( orelse , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } * out = If ( test , body , orelse , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) With_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * items ; asdl_seq * body ; string type_comment ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_items ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_items ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"With<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; items = _Ta3_asdl_seq_new ( len , arena ) ; if ( items == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> withitem_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_withitem ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"With<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( items , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>With\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"With<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"With<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>With\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_type_comment ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_type_comment ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { type_comment = NULL ; } * out = With ( items , body , type_comment , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AsyncWith_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * items ; asdl_seq * body ; string type_comment ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_items ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_items ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncWith<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; items = _Ta3_asdl_seq_new ( len , arena ) ; if ( items == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> withitem_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_withitem ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncWith<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( items , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncWith\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncWith<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncWith<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncWith\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_type_comment ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_type_comment ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { type_comment = NULL ; } * out = AsyncWith ( items , body , type_comment , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Raise_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty exc ; expr_ty cause ; <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_exc ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_exc ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & exc , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { exc = NULL ; } if ( exists_not_none ( obj , & PyId_cause ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_cause ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & cause , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { cause = NULL ; } * out = Raise ( exc , cause , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Try_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * body ; asdl_seq * handlers ; asdl_seq * orelse ; asdl_seq * finalbody ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_handlers ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_handlers ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"handlers\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; handlers = _Ta3_asdl_seq_new ( len , arena ) ; if ( handlers == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> excepthandler_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_excepthandler ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"handlers\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( handlers , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"handlers\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_orelse ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_orelse ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Ta3_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( orelse , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_finalbody ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_finalbody ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"finalbody\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; finalbody = _Ta3_asdl_seq_new ( len , arena ) ; if ( finalbody == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"finalbody\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( finalbody , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"finalbody\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } * out = Try ( body , handlers , orelse , finalbody , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Assert_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty test ; expr_ty msg ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_test ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_test ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & test , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assert\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_msg ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_msg ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & msg , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { msg = NULL ; } * out = Assert ( test , msg , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Import_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * names ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_names ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_names ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Import<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; names = _Ta3_asdl_seq_new ( len , arena ) ; if ( names == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> alias_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_alias ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Import<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( names , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Import\" ) ; return 1 ; } * out = Import ( names , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) ImportFrom_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier module ; asdl_seq * names ; int level ; <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_module ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_module ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_identifier ( tmp , & module , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { module = NULL ; } if ( _PyObject_HasAttrId ( obj , & PyId_names ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_names ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ImportFrom<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; names = _Ta3_asdl_seq_new ( len , arena ) ; if ( names == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> alias_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_alias ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ImportFrom<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( names , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ImportFrom\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_level ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_level ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & level , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { level = 0 ; } * out = ImportFrom ( module , names , level , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Global_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * names ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_names ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_names ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Global<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; names = _Ta3_asdl_seq_new ( len , arena ) ; if ( names == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> identifier value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_identifier ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Global<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( names , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Global\" ) ; return 1 ; } * out = Global ( names , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Nonlocal_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * names ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_names ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_names ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Nonlocal<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; names = _Ta3_asdl_seq_new ( len , arena ) ; if ( names == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> identifier value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_identifier ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Nonlocal<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( names , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Nonlocal\" ) ; return 1 ; } * out = Nonlocal ( names , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Expr_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Expr\" ) ; return 1 ; } * out = Expr ( value , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Pass_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { * out = Pass ( lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Break_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { * out = Break ( lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Continue_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { * out = Continue ( lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>some<S2SV_blank>sort<S2SV_blank>of<S2SV_blank>stmt,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%R\" , obj ) ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>stmt\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_int ( tmp , & lineno , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_col_offset , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>stmt\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & col_offset <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } isinstance <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_name , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_args , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } else { int res ; res = obj2ast_arguments ( tmp , & args <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> Py_ssize_t len ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_decorator_list , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_returns , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; returns = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & returns , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_string ( tmp , & type_comment <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_name , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_args , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } else { int res ; res = obj2ast_arguments ( tmp , & args <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> Py_ssize_t len ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_decorator_list , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_returns , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; returns = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & returns , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_string ( tmp , & type_comment <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_name , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_bases , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"bases\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_keywords , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { keyword_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_decorator_list , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; value = NULL ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_expr <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_targets , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Delete\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_targets , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assign\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assign\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_ModEnd> Py_CLEAR ( tmp <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; res = obj2ast_string ( tmp , & type_comment <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_target , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_op , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } else { int res ; res = obj2ast_operator ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & value <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_target , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_annotation , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"annotation\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & annotation <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; value = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_simple , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { <S2SV_ModEnd> PyErr_SetString ( PyExc_TypeError <S2SV_ModStart> ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"simple\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_int ( tmp , & simple <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_target , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_iter , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"iter\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & iter <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> Py_ssize_t len ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_string <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_target , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_iter , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"iter\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & iter <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> Py_ssize_t len ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_string <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_test , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_test , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_items , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>With\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { withitem_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>With\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_string <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_items , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncWith\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { withitem_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncWith\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_string <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_exc , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; exc = NULL ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & exc , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_cause , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; cause = NULL ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & cause <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_handlers , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"handlers\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { excepthandler_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_finalbody , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"finalbody\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_test , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assert\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_msg , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; msg = NULL ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & msg <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_names , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Import\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { alias_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_module , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; module = NULL ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_identifier ( tmp , & module , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_names , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ImportFrom\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { alias_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_level , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; level = 0 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_int <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_names , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Global\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { identifier val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_names , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Nonlocal\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { identifier val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Expr\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_expr <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9888\n\n```\nCWE-264 static void * arm_coherent_dma_alloc ( struct device * dev , size_t size , dma_addr_t * handle , gfp_t gfp , struct dma_attrs * attrs ) { <S2SV_StartBug> pgprot_t prot = __get_dma_pgprot ( attrs , pgprot_kernel ) ; <S2SV_EndBug> void * memory ; if ( dma_alloc_from_coherent ( dev , size , handle , & memory ) ) return memory ; return __dma_alloc ( dev , size , handle , gfp , prot , true , __builtin_return_address ( 0 ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( attrs , PAGE_KERNEL <S2SV_ModEnd> ) ; void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static int cop1Emulate ( struct pt_regs * xcp , struct mips_fpu_struct * ctx , void * __user * fault_addr ) { mips_instruction ir ; unsigned long emulpc , contpc ; unsigned int cond ; if ( ! access_ok ( VERIFY_READ , xcp -> cp0_epc , sizeof ( mips_instruction ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) xcp -> cp0_epc ; return SIGBUS ; } if ( __get_user ( ir , ( mips_instruction __user * ) xcp -> cp0_epc ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) xcp -> cp0_epc ; return SIGSEGV ; } if ( ( xcp -> cp0_cause & CAUSEF_BD ) && ! isBranchInstr ( & ir ) ) xcp -> cp0_cause &= ~ CAUSEF_BD ; if ( xcp -> cp0_cause & CAUSEF_BD ) { emulpc = xcp -> cp0_epc + 4 ; if ( __compute_return_epc ( xcp ) ) { # ifdef CP1DBG printk ( \"failed<S2SV_blank>to<S2SV_blank>emulate<S2SV_blank>branch<S2SV_blank>at<S2SV_blank>%p\\\\n\" , ( void * ) ( xcp -> cp0_epc ) ) ; # endif return SIGILL ; } if ( ! access_ok ( VERIFY_READ , emulpc , sizeof ( mips_instruction ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) emulpc ; return SIGBUS ; } if ( __get_user ( ir , ( mips_instruction __user * ) emulpc ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) emulpc ; return SIGSEGV ; } contpc = xcp -> cp0_epc ; xcp -> cp0_epc = emulpc - 4 ; } else { emulpc = xcp -> cp0_epc ; contpc = xcp -> cp0_epc + 4 ; } emul : perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , xcp , 0 ) ; <S2SV_EndBug> MIPS_FPU_EMU_INC_STATS ( emulated ) ; switch ( MIPSInst_OPCODE ( ir ) ) { case ldc1_op : { u64 __user * va = ( u64 __user * ) ( xcp -> regs [ MIPSInst_RS ( ir ) ] + MIPSInst_SIMM ( ir ) ) ; u64 val ; MIPS_FPU_EMU_INC_STATS ( loads ) ; if ( ! access_ok ( VERIFY_READ , va , sizeof ( u64 ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGBUS ; } if ( __get_user ( val , va ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGSEGV ; } DITOREG ( val , MIPSInst_RT ( ir ) ) ; break ; } case sdc1_op : { u64 __user * va = ( u64 __user * ) ( xcp -> regs [ MIPSInst_RS ( ir ) ] + MIPSInst_SIMM ( ir ) ) ; u64 val ; MIPS_FPU_EMU_INC_STATS ( stores ) ; DIFROMREG ( val , MIPSInst_RT ( ir ) ) ; if ( ! access_ok ( VERIFY_WRITE , va , sizeof ( u64 ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGBUS ; } if ( __put_user ( val , va ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGSEGV ; } break ; } case lwc1_op : { u32 __user * va = ( u32 __user * ) ( xcp -> regs [ MIPSInst_RS ( ir ) ] + MIPSInst_SIMM ( ir ) ) ; u32 val ; MIPS_FPU_EMU_INC_STATS ( loads ) ; if ( ! access_ok ( VERIFY_READ , va , sizeof ( u32 ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGBUS ; } if ( __get_user ( val , va ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGSEGV ; } SITOREG ( val , MIPSInst_RT ( ir ) ) ; break ; } case swc1_op : { u32 __user * va = ( u32 __user * ) ( xcp -> regs [ MIPSInst_RS ( ir ) ] + MIPSInst_SIMM ( ir ) ) ; u32 val ; MIPS_FPU_EMU_INC_STATS ( stores ) ; SIFROMREG ( val , MIPSInst_RT ( ir ) ) ; if ( ! access_ok ( VERIFY_WRITE , va , sizeof ( u32 ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGBUS ; } if ( __put_user ( val , va ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGSEGV ; } break ; } case cop1_op : switch ( MIPSInst_RS ( ir ) ) { # if defined ( __mips64 ) case dmfc_op : if ( MIPSInst_RT ( ir ) != 0 ) { DIFROMREG ( xcp -> regs [ MIPSInst_RT ( ir ) ] , MIPSInst_RD ( ir ) ) ; } break ; case dmtc_op : DITOREG ( xcp -> regs [ MIPSInst_RT ( ir ) ] , MIPSInst_RD ( ir ) ) ; break ; # endif case mfc_op : if ( MIPSInst_RT ( ir ) != 0 ) { SIFROMREG ( xcp -> regs [ MIPSInst_RT ( ir ) ] , MIPSInst_RD ( ir ) ) ; } break ; case mtc_op : SITOREG ( xcp -> regs [ MIPSInst_RT ( ir ) ] , MIPSInst_RD ( ir ) ) ; break ; case cfc_op : { u32 value ; if ( MIPSInst_RD ( ir ) == FPCREG_CSR ) { value = ctx -> fcr31 ; value = ( value & ~ FPU_CSR_RM ) | mips_rm [ modeindex ( value ) ] ; # ifdef CSRTRACE printk ( \"%p<S2SV_blank>gpr[%d]<-csr=%08x\\\\n\" , ( void * ) ( xcp -> cp0_epc ) , MIPSInst_RT ( ir ) , value ) ; # endif } else if ( MIPSInst_RD ( ir ) == FPCREG_RID ) value = 0 ; else value = 0 ; if ( MIPSInst_RT ( ir ) ) xcp -> regs [ MIPSInst_RT ( ir ) ] = value ; break ; } case ctc_op : { u32 value ; if ( MIPSInst_RT ( ir ) == 0 ) value = 0 ; else value = xcp -> regs [ MIPSInst_RT ( ir ) ] ; if ( MIPSInst_RD ( ir ) == FPCREG_CSR ) { # ifdef CSRTRACE printk ( \"%p<S2SV_blank>gpr[%d]->csr=%08x\\\\n\" , ( void * ) ( xcp -> cp0_epc ) , MIPSInst_RT ( ir ) , value ) ; # endif ctx -> fcr31 = ( value & ~ ( FPU_CSR_RSVD | FPU_CSR_RM ) ) | ieee_rm [ modeindex ( value ) ] ; } if ( ( ctx -> fcr31 >> 5 ) & ctx -> fcr31 & FPU_CSR_ALL_E ) { return SIGFPE ; } break ; } case bc_op : { int likely = 0 ; if ( xcp -> cp0_cause & CAUSEF_BD ) return SIGILL ; # if __mips >= 4 cond = ctx -> fcr31 & fpucondbit [ MIPSInst_RT ( ir ) >> 2 ] ; # else cond = ctx -> fcr31 & FPU_CSR_COND ; # endif switch ( MIPSInst_RT ( ir ) & 3 ) { case bcfl_op : likely = 1 ; case bcf_op : cond = ! cond ; break ; case bctl_op : likely = 1 ; case bct_op : break ; default : return SIGILL ; } xcp -> cp0_cause |= CAUSEF_BD ; if ( cond ) { xcp -> cp0_epc += 4 ; contpc = ( xcp -> cp0_epc + ( MIPSInst_SIMM ( ir ) << 2 ) ) ; if ( ! access_ok ( VERIFY_READ , xcp -> cp0_epc , sizeof ( mips_instruction ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) xcp -> cp0_epc ; return SIGBUS ; } if ( __get_user ( ir , ( mips_instruction __user * ) xcp -> cp0_epc ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) xcp -> cp0_epc ; return SIGSEGV ; } switch ( MIPSInst_OPCODE ( ir ) ) { case lwc1_op : case swc1_op : # if ( __mips >= 2 || defined ( __mips64 ) ) case ldc1_op : case sdc1_op : # endif case cop1_op : # if __mips >= 4 && __mips != 32 case cop1x_op : # endif goto emul ; # if __mips >= 4 case spec_op : if ( MIPSInst_FUNC ( ir ) == movc_op ) goto emul ; break ; # endif } return mips_dsemul ( xcp , ir , contpc ) ; } else { if ( likely ) { xcp -> cp0_epc += 4 ; contpc += 4 ; } } break ; } default : if ( ! ( MIPSInst_RS ( ir ) & 0x10 ) ) return SIGILL ; { int sig ; if ( ( sig = fpu_emu ( xcp , ctx , ir ) ) ) return sig ; } } break ; # if __mips >= 4 && __mips != 32 case cop1x_op : { int sig = fpux_emu ( xcp , ctx , ir , fault_addr ) ; if ( sig ) return sig ; break ; } # endif # if __mips >= 4 case spec_op : if ( MIPSInst_FUNC ( ir ) != movc_op ) return SIGILL ; cond = fpucondbit [ MIPSInst_RT ( ir ) >> 2 ] ; if ( ( ( ctx -> fcr31 & cond ) != 0 ) == ( ( MIPSInst_RT ( ir ) & 1 ) != 0 ) ) xcp -> regs [ MIPSInst_RD ( ir ) ] = xcp -> regs [ MIPSInst_RS ( ir ) ] ; break ; # endif default : return SIGILL ; } xcp -> cp0_epc = contpc ; xcp -> cp0_cause &= ~ CAUSEF_BD ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , xcp ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4502\n\n```\nCWE-119 bool initiate_stratum ( struct pool * pool ) { bool ret = false , recvd = false , noresume = false , sockd = false ; char s [ RBUFSIZE ] , * sret = NULL , * nonce1 , * sessionid ; json_t * val = NULL , * res_val , * err_val ; json_error_t err ; int n2size ; resend : if ( ! setup_stratum_socket ( pool ) ) { applog ( LOG_INFO , \"setup_stratum_socket()<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>failed\" , get_pool_name ( pool ) ) ; sockd = false ; goto out ; } sockd = true ; if ( recvd ) { clear_sock ( pool ) ; sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[]}\" , swork_id ++ ) ; } else { if ( pool -> sessionid ) sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[\\\\\"\" PACKAGE \"/\" VERSION \"\\\\\",<S2SV_blank>\\\\\"%s\\\\\"]}\" , swork_id ++ , pool -> sessionid ) ; else sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[\\\\\"\" PACKAGE \"/\" VERSION \"\\\\\"]}\" , swork_id ++ ) ; } if ( __stratum_send ( pool , s , strlen ( s ) ) != SEND_OK ) { applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>s<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } if ( ! socket_full ( pool , DEFAULT_SOCKWAIT ) ) { applog ( LOG_DEBUG , \"Timed<S2SV_blank>out<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>response<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } sret = recv_line ( pool ) ; if ( ! sret ) goto out ; recvd = true ; val = JSON_LOADS ( sret , & err ) ; free ( sret ) ; if ( ! val ) { applog ( LOG_INFO , \"JSON<S2SV_blank>decode<S2SV_blank>failed(%d):<S2SV_blank>%s\" , err . line , err . text ) ; goto out ; } res_val = json_object_get ( val , \"result\" ) ; err_val = json_object_get ( val , \"error\" ) ; if ( ! res_val || json_is_null ( res_val ) || ( err_val && ! json_is_null ( err_val ) ) ) { char * ss ; if ( err_val ) ss = json_dumps ( err_val , JSON_INDENT ( 3 ) ) ; else ss = strdup ( \"(unknown<S2SV_blank>reason)\" ) ; applog ( LOG_INFO , \"JSON-RPC<S2SV_blank>decode<S2SV_blank>failed:<S2SV_blank>%s\" , ss ) ; free ( ss ) ; goto out ; } sessionid = get_sessionid ( res_val ) ; if ( ! sessionid ) applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>sessionid<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; nonce1 = json_array_string ( res_val , 1 ) ; if ( ! nonce1 ) { applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>nonce1<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; free ( sessionid ) ; goto out ; } n2size = json_integer_value ( json_array_get ( res_val , 2 ) ) ; <S2SV_StartBug> if ( ! n2size ) { <S2SV_EndBug> applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>n2size<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; free ( sessionid ) ; free ( nonce1 ) ; goto out ; } cg_wlock ( & pool -> data_lock ) ; pool -> sessionid = sessionid ; pool -> nonce1 = nonce1 ; pool -> n1_len = strlen ( nonce1 ) / 2 ; free ( pool -> nonce1bin ) ; pool -> nonce1bin = ( unsigned char * ) calloc ( pool -> n1_len , 1 ) ; if ( unlikely ( ! pool -> nonce1bin ) ) quithere ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>pool->nonce1bin\" ) ; hex2bin ( pool -> nonce1bin , pool -> nonce1 , pool -> n1_len ) ; pool -> n2size = n2size ; cg_wunlock ( & pool -> data_lock ) ; if ( sessionid ) applog ( LOG_DEBUG , \"%s<S2SV_blank>stratum<S2SV_blank>session<S2SV_blank>id:<S2SV_blank>%s\" , get_pool_name ( pool ) , pool -> sessionid ) ; ret = true ; out : if ( ret ) { if ( ! pool -> stratum_url ) pool -> stratum_url = pool -> sockaddr_url ; pool -> stratum_active = true ; pool -> swork . diff = 1 ; if ( opt_protocol ) { applog ( LOG_DEBUG , \"%s<S2SV_blank>confirmed<S2SV_blank>mining.subscribe<S2SV_blank>with<S2SV_blank>extranonce1<S2SV_blank>%s<S2SV_blank>extran2size<S2SV_blank>%d\" , get_pool_name ( pool ) , pool -> nonce1 , pool -> n2size ) ; } } else { if ( recvd && ! noresume ) { cg_wlock ( & pool -> data_lock ) ; free ( pool -> sessionid ) ; free ( pool -> nonce1 ) ; pool -> sessionid = pool -> nonce1 = NULL ; cg_wunlock ( & pool -> data_lock ) ; applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>resume<S2SV_blank>stratum,<S2SV_blank>trying<S2SV_blank>afresh\" ) ; noresume = true ; json_decref ( val ) ; goto resend ; } applog ( LOG_DEBUG , \"Initiating<S2SV_blank>stratum<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>%s\" , get_pool_name ( pool ) ) ; if ( sockd ) { applog ( LOG_DEBUG , \"Suspending<S2SV_blank>stratum<S2SV_blank>on<S2SV_blank>%s\" , get_pool_name ( pool ) ) ; suspend_stratum ( pool ) ; } } json_decref ( val ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( n2size < 1 ) <S2SV_ModEnd> { applog (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5509\n\n```\nCWE-787 static MagickBooleanType ReadPSDChannelRLE ( Image * image , const PSDInfo * psd_info , const ssize_t type , MagickOffsetType * sizes , ExceptionInfo * exception ) { MagickBooleanType status ; size_t length , row_size ; ssize_t count , y ; unsigned char * compact_pixels , * pixels ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>data<S2SV_blank>is<S2SV_blank>RLE<S2SV_blank>compressed\" ) ; row_size = GetPSDRowSize ( image ) ; pixels = ( unsigned char * ) AcquireQuantumMemory ( row_size , sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; length = 0 ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) if ( ( MagickOffsetType ) length < sizes [ y ] ) length = ( size_t ) sizes [ y ] ; if ( length > row_size + 256 ) { pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; ThrowBinaryException ( ResourceLimitError , \"InvalidLength\" , image -> filename ) ; } compact_pixels = ( unsigned char * ) AcquireQuantumMemory ( length , sizeof ( * pixels ) ) ; if ( compact_pixels == ( unsigned char * ) NULL ) { pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; } ( void ) ResetMagickMemory ( compact_pixels , 0 , length * sizeof ( * compact_pixels ) ) ; status = MagickTrue ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { status = MagickFalse ; count = ReadBlob ( image , ( size_t ) sizes [ y ] , compact_pixels ) ; if ( count != ( ssize_t ) sizes [ y ] ) break ; count = DecodePSDPixels ( ( size_t ) sizes [ y ] , compact_pixels , ( ssize_t ) ( image -> depth == 1 ? 123456 : image -> depth ) , row_size , pixels ) ; if ( count != ( ssize_t ) row_size ) break ; status = ReadPSDChannelPixels ( image , psd_info -> channels , y , type , pixels , exception ) ; if ( status == MagickFalse ) break ; } compact_pixels = ( unsigned char * ) RelinquishMagickMemory ( compact_pixels ) ; pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9527\n\n```\nCWE-416 static void mark_context_stack ( mrb_state * mrb , struct mrb_context * c ) { size_t i ; <S2SV_StartBug> size_t e ; <S2SV_EndBug> if ( c -> stack == NULL ) return ; e = c -> stack - c -> stbase ; if ( c -> ci ) e += c -> ci -> nregs ; if ( c -> stbase + e > c -> stend ) e = c -> stend - c -> stbase ; for ( i = 0 ; i < e ; i ++ ) { mrb_value v = c -> stbase [ i ] ; if ( ! mrb_immediate_p ( v ) ) { <S2SV_StartBug> if ( mrb_basic_ptr ( v ) -> tt == MRB_TT_FREE ) { <S2SV_EndBug> c -> stbase [ i ] = mrb_nil_value ( ) ; } else { mrb_gc_mark ( mrb , mrb_basic_ptr ( v ) ) ; } } <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t e ; mrb_value nil <S2SV_ModStart> ) ) { <S2SV_ModEnd> mrb_gc_mark ( mrb <S2SV_ModStart> ; } } e = c -> stend - c -> stbase ; nil = mrb_nil_value ( ) ; for ( ; i < e ; i ++ ) { c -> stbase [ i ] = nil ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 gboolean cib_notify_client ( gpointer key , gpointer value , gpointer user_data ) { const char * type = NULL ; gboolean do_send = FALSE ; cib_client_t * client = value ; xmlNode * update_msg = user_data ; CRM_CHECK ( client != NULL , return TRUE ) ; CRM_CHECK ( update_msg != NULL , return TRUE ) ; <S2SV_StartBug> if ( client -> ipc == NULL ) { <S2SV_EndBug> crm_warn ( \"Skipping<S2SV_blank>client<S2SV_blank>with<S2SV_blank>NULL<S2SV_blank>channel\" ) ; return FALSE ; } type = crm_element_value ( update_msg , F_SUBTYPE ) ; CRM_LOG_ASSERT ( type != NULL ) ; if ( client -> diffs && safe_str_eq ( type , T_CIB_DIFF_NOTIFY ) ) { do_send = TRUE ; } else if ( client -> replace && safe_str_eq ( type , T_CIB_REPLACE_NOTIFY ) ) { do_send = TRUE ; } else if ( client -> confirmations && safe_str_eq ( type , T_CIB_UPDATE_CONFIRM ) ) { do_send = TRUE ; } else if ( client -> pre_notify && safe_str_eq ( type , T_CIB_PRE_NOTIFY ) ) { do_send = TRUE ; } else if ( client -> post_notify && safe_str_eq ( type , T_CIB_POST_NOTIFY ) ) { do_send = TRUE ; } if ( do_send ) { if ( client -> ipc ) { if ( crm_ipcs_send ( client -> ipc , 0 , update_msg , TRUE ) == FALSE ) { crm_warn ( \"Notification<S2SV_blank>of<S2SV_blank>client<S2SV_blank>%s/%s<S2SV_blank>failed\" , client -> name , client -> id ) ; } # ifdef HAVE_GNUTLS_GNUTLS_H } else if ( client -> session ) { crm_debug ( \"Sent<S2SV_blank>%s<S2SV_blank>notification<S2SV_blank>to<S2SV_blank>client<S2SV_blank>%s/%s\" , type , client -> name , client -> id ) ; crm_send_remote_msg ( client -> session , update_msg , client -> encrypted ) ; # endif } else { crm_err ( \"Unknown<S2SV_blank>transport<S2SV_blank>for<S2SV_blank>%s\" , client -> name ) ; } } return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ipc == NULL && client -> session == NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15919\n\n```\nCWE-416 int SMB2_write ( const unsigned int xid , struct cifs_io_parms * io_parms , unsigned int * nbytes , struct kvec * iov , int n_vec ) { struct smb_rqst rqst ; int rc = 0 ; struct smb2_write_req * req = NULL ; struct smb2_write_rsp * rsp = NULL ; int resp_buftype ; struct kvec rsp_iov ; int flags = 0 ; unsigned int total_len ; * nbytes = 0 ; if ( n_vec < 1 ) return rc ; rc = smb2_plain_req_init ( SMB2_WRITE , io_parms -> tcon , ( void * * ) & req , & total_len ) ; if ( rc ) return rc ; if ( io_parms -> tcon -> ses -> server == NULL ) return - ECONNABORTED ; if ( smb3_encryption_required ( io_parms -> tcon ) ) flags |= CIFS_TRANSFORM_REQ ; req -> sync_hdr . ProcessId = cpu_to_le32 ( io_parms -> pid ) ; req -> PersistentFileId = io_parms -> persistent_fid ; req -> VolatileFileId = io_parms -> volatile_fid ; req -> WriteChannelInfoOffset = 0 ; req -> WriteChannelInfoLength = 0 ; req -> Channel = 0 ; req -> Length = cpu_to_le32 ( io_parms -> length ) ; req -> Offset = cpu_to_le64 ( io_parms -> offset ) ; req -> DataOffset = cpu_to_le16 ( offsetof ( struct smb2_write_req , Buffer ) ) ; req -> RemainingBytes = 0 ; trace_smb3_write_enter ( xid , io_parms -> persistent_fid , io_parms -> tcon -> tid , io_parms -> tcon -> ses -> Suid , io_parms -> offset , io_parms -> length ) ; iov [ 0 ] . iov_base = ( char * ) req ; iov [ 0 ] . iov_len = total_len - 1 ; memset ( & rqst , 0 , sizeof ( struct smb_rqst ) ) ; rqst . rq_iov = iov ; rqst . rq_nvec = n_vec + 1 ; rc = cifs_send_recv ( xid , io_parms -> tcon -> ses , & rqst , & resp_buftype , flags , & rsp_iov ) ; <S2SV_StartBug> cifs_small_buf_release ( req ) ; <S2SV_EndBug> rsp = ( struct smb2_write_rsp * ) rsp_iov . iov_base ; if ( rc ) { trace_smb3_write_err ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , io_parms -> tcon -> ses -> Suid , io_parms -> offset , io_parms -> length , rc ) ; cifs_stats_fail_inc ( io_parms -> tcon , SMB2_WRITE_HE ) ; cifs_dbg ( VFS , \"Send<S2SV_blank>error<S2SV_blank>in<S2SV_blank>write<S2SV_blank>=<S2SV_blank>%d\\\\n\" , rc ) ; } else { * nbytes = le32_to_cpu ( rsp -> DataLength ) ; trace_smb3_write_done ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , io_parms -> tcon -> ses -> Suid , io_parms -> offset , * nbytes ) ; } <S2SV_StartBug> free_rsp_buf ( resp_buftype , rsp ) ; <S2SV_EndBug> return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rsp_iov ) ; <S2SV_ModEnd> rsp = ( <S2SV_ModStart> ) ; } cifs_small_buf_release ( req ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5104\n\n```\nCWE-284 int socket_accept ( int fd , uint16_t port ) { # ifdef WIN32 int addr_len ; # else socklen_t addr_len ; # endif int result ; struct sockaddr_in addr ; memset ( & addr , 0 , sizeof ( addr ) ) ; addr . sin_family = AF_INET ; <S2SV_StartBug> addr . sin_addr . s_addr = htonl ( INADDR_ANY ) ; <S2SV_EndBug> addr . sin_port = htons ( port ) ; addr_len = sizeof ( addr ) ; result = accept ( fd , ( struct sockaddr * ) & addr , & addr_len ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = htonl ( INADDR_LOOPBACK <S2SV_ModEnd> ) ; addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-770(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16645\n\n```\nCWE-770 static Image * ReadBMPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { BMPInfo bmp_info ; Image * image ; MagickBooleanType status ; MagickOffsetType offset , start_position ; MemoryInfo * pixel_info ; Quantum index ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bit , bytes_per_line , length ; ssize_t count , y ; unsigned char magick [ 12 ] , * pixels ; unsigned int blue , green , offset_bits , red ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( & bmp_info , 0 , sizeof ( bmp_info ) ) ; bmp_info . ba_offset = 0 ; start_position = 0 ; offset_bits = 0 ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { PixelInfo quantum_bits ; PixelPacket shift ; if ( bmp_info . ba_offset == 0 ) start_position = TellBlob ( image ) - 2 ; bmp_info . ba_offset = 0 ; while ( LocaleNCompare ( ( char * ) magick , \"BA\" , 2 ) == 0 ) { bmp_info . file_size = ReadBlobLSBLong ( image ) ; bmp_info . ba_offset = ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) break ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Magick:<S2SV_blank>%c%c\" , magick [ 0 ] , magick [ 1 ] ) ; if ( ( count != 2 ) || ( ( LocaleNCompare ( ( char * ) magick , \"BM\" , 2 ) != 0 ) && ( LocaleNCompare ( ( char * ) magick , \"CI\" , 2 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bmp_info . file_size = ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; bmp_info . size = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>BMP<S2SV_blank>size:<S2SV_blank>%u\" , bmp_info . size ) ; if ( bmp_info . size == 12 ) { ( void ) CopyMagickString ( image -> magick , \"BMP2\" , MagickPathExtent ) ; bmp_info . width = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . height = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . x_pixels = 0 ; bmp_info . y_pixels = 0 ; bmp_info . number_colors = 0 ; bmp_info . compression = BI_RGB ; bmp_info . image_size = 0 ; bmp_info . alpha_mask = 0 ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>OS/2<S2SV_blank>Bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; } } else { if ( bmp_info . size < 40 ) ThrowReaderException ( CorruptImageError , \"NonOS2HeaderSizeError\" ) ; bmp_info . width = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . height = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . compression = ReadBlobLSBLong ( image ) ; bmp_info . image_size = ReadBlobLSBLong ( image ) ; bmp_info . x_pixels = ReadBlobLSBLong ( image ) ; bmp_info . y_pixels = ReadBlobLSBLong ( image ) ; <S2SV_StartBug> bmp_info . number_colors = ReadBlobLSBLong ( image ) ; <S2SV_EndBug> bmp_info . colors_important = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>MS<S2SV_blank>Windows<S2SV_blank>bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Bits<S2SV_blank>per<S2SV_blank>pixel:<S2SV_blank>%.20g\" , ( double ) bmp_info . bits_per_pixel ) ; switch ( bmp_info . compression ) { case BI_RGB : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RGB\" ) ; break ; } case BI_RLE4 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE4\" ) ; break ; } case BI_RLE8 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE8\" ) ; break ; } case BI_BITFIELDS : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_BITFIELDS\" ) ; break ; } case BI_PNG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_PNG\" ) ; break ; } case BI_JPEG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_JPEG\" ) ; break ; } default : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>UNKNOWN<S2SV_blank>(%u)\" , bmp_info . compression ) ; } } ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>colors:<S2SV_blank>%u\" , bmp_info . number_colors ) ; } bmp_info . red_mask = ReadBlobLSBLong ( image ) ; bmp_info . green_mask = ReadBlobLSBLong ( image ) ; bmp_info . blue_mask = ReadBlobLSBLong ( image ) ; if ( bmp_info . size > 40 ) { double gamma ; bmp_info . alpha_mask = ReadBlobLSBLong ( image ) ; bmp_info . colorspace = ReadBlobLSBSignedLong ( image ) ; # define BMP_DENOM ( ( double ) 0x40000000 ) bmp_info . red_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; gamma = bmp_info . red_primary . x + bmp_info . red_primary . y + bmp_info . red_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . red_primary . x *= gamma ; bmp_info . red_primary . y *= gamma ; image -> chromaticity . red_primary . x = bmp_info . red_primary . x ; image -> chromaticity . red_primary . y = bmp_info . red_primary . y ; gamma = bmp_info . green_primary . x + bmp_info . green_primary . y + bmp_info . green_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . green_primary . x *= gamma ; bmp_info . green_primary . y *= gamma ; image -> chromaticity . green_primary . x = bmp_info . green_primary . x ; image -> chromaticity . green_primary . y = bmp_info . green_primary . y ; gamma = bmp_info . blue_primary . x + bmp_info . blue_primary . y + bmp_info . blue_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . blue_primary . x *= gamma ; bmp_info . blue_primary . y *= gamma ; image -> chromaticity . blue_primary . x = bmp_info . blue_primary . x ; image -> chromaticity . blue_primary . y = bmp_info . blue_primary . y ; bmp_info . gamma_scale . x = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . y = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . z = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; image -> gamma = ( bmp_info . gamma_scale . x + bmp_info . gamma_scale . y + bmp_info . gamma_scale . z ) / 3.0 ; } else ( void ) CopyMagickString ( image -> magick , \"BMP3\" , MagickPathExtent ) ; if ( bmp_info . size > 108 ) { size_t intent ; intent = ReadBlobLSBLong ( image ) ; switch ( ( int ) intent ) { case LCS_GM_BUSINESS : { image -> rendering_intent = SaturationIntent ; break ; } case LCS_GM_GRAPHICS : { image -> rendering_intent = RelativeIntent ; break ; } case LCS_GM_IMAGES : { image -> rendering_intent = PerceptualIntent ; break ; } case LCS_GM_ABS_COLORIMETRIC : { image -> rendering_intent = AbsoluteIntent ; break ; } } ( void ) ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; } } if ( ( MagickSizeType ) bmp_info . file_size > GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; else if ( ( MagickSizeType ) bmp_info . file_size < GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageWarning , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; if ( bmp_info . width <= 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . height == 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . planes != 1 ) ThrowReaderException ( CorruptImageError , \"StaticPlanesValueNotEqualToOne\" ) ; if ( ( bmp_info . bits_per_pixel != 1 ) && ( bmp_info . bits_per_pixel != 4 ) && ( bmp_info . bits_per_pixel != 8 ) && ( bmp_info . bits_per_pixel != 16 ) && ( bmp_info . bits_per_pixel != 24 ) && ( bmp_info . bits_per_pixel != 32 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( bmp_info . bits_per_pixel < 16 && bmp_info . number_colors > ( 1U << bmp_info . bits_per_pixel ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedNumberOfColors\" ) ; if ( ( bmp_info . compression == 1 ) && ( bmp_info . bits_per_pixel != 8 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 2 ) && ( bmp_info . bits_per_pixel != 4 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 3 ) && ( bmp_info . bits_per_pixel < 16 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; switch ( bmp_info . compression ) { case BI_RGB : image -> compression = NoCompression ; break ; case BI_RLE8 : case BI_RLE4 : image -> compression = RLECompression ; break ; case BI_BITFIELDS : break ; case BI_JPEG : ThrowReaderException ( CoderError , \"JPEGCompressNotSupported\" ) ; case BI_PNG : ThrowReaderException ( CoderError , \"PNGCompressNotSupported\" ) ; default : ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } image -> columns = ( size_t ) MagickAbsoluteValue ( bmp_info . width ) ; image -> rows = ( size_t ) MagickAbsoluteValue ( bmp_info . height ) ; image -> depth = bmp_info . bits_per_pixel <= 8 ? bmp_info . bits_per_pixel : 8 ; image -> alpha_trait = ( ( bmp_info . alpha_mask != 0 ) && ( bmp_info . compression == BI_BITFIELDS ) ) ? BlendPixelTrait : UndefinedPixelTrait ; if ( bmp_info . bits_per_pixel < 16 ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = bmp_info . number_colors ; one = 1 ; if ( image -> colors == 0 ) image -> colors = one << bmp_info . bits_per_pixel ; } image -> resolution . x = ( double ) bmp_info . x_pixels / 100.0 ; image -> resolution . y = ( double ) bmp_info . y_pixels / 100.0 ; image -> units = PixelsPerCentimeterResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> storage_class == PseudoClass ) { unsigned char * bmp_colormap ; size_t packet_size ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>colormap<S2SV_blank>of<S2SV_blank>%.20g<S2SV_blank>colors\" , ( double ) image -> colors ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bmp_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) image -> colors , 4 * sizeof ( * bmp_colormap ) ) ; if ( bmp_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bmp_info . size == 12 ) || ( bmp_info . size == 64 ) ) packet_size = 3 ; else packet_size = 4 ; offset = SeekBlob ( image , start_position + 14 + bmp_info . size , SEEK_SET ) ; if ( offset < 0 ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } count = ReadBlob ( image , packet_size * image -> colors , bmp_colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = bmp_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; if ( packet_size == 4 ) p ++ ; } bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; } if ( bmp_info . offset_bits == offset_bits ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; offset_bits = bmp_info . offset_bits ; offset = SeekBlob ( image , start_position + bmp_info . offset_bits , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( bmp_info . compression == BI_RLE4 ) bmp_info . bits_per_pixel <<= 1 ; bytes_per_line = 4 * ( ( image -> columns * bmp_info . bits_per_pixel + 31 ) / 32 ) ; length = ( size_t ) bytes_per_line * image -> rows ; if ( ( ( MagickSizeType ) length / 8 ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ( bmp_info . compression == BI_RGB ) || ( bmp_info . compression == BI_BITFIELDS ) ) { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>pixels<S2SV_blank>(%.20g<S2SV_blank>bytes)\" , ( double ) length ) ; count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } } else { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; status = DecodeImage ( image , bmp_info . compression , pixels , image -> columns * image -> rows ) ; if ( status == MagickFalse ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToRunlengthDecodeImage\" ) ; } } if ( bmp_info . compression == BI_RGB ) { if ( ( image -> alpha_trait == UndefinedPixelTrait ) && ( bmp_info . size == 40 ) && ( bmp_info . bits_per_pixel == 32 ) ) { bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( * ( p + 3 ) != 0 ) { image -> alpha_trait = BlendPixelTrait ; y = - 1 ; break ; } p += 4 ; } } } bmp_info . alpha_mask = image -> alpha_trait != UndefinedPixelTrait ? 0xff000000U : 0U ; bmp_info . red_mask = 0x00ff0000U ; bmp_info . green_mask = 0x0000ff00U ; bmp_info . blue_mask = 0x000000ffU ; if ( bmp_info . bits_per_pixel == 16 ) { bmp_info . red_mask = 0x00007c00U ; bmp_info . green_mask = 0x000003e0U ; bmp_info . blue_mask = 0x0000001fU ; } } ( void ) memset ( & shift , 0 , sizeof ( shift ) ) ; ( void ) memset ( & quantum_bits , 0 , sizeof ( quantum_bits ) ) ; if ( ( bmp_info . bits_per_pixel == 16 ) || ( bmp_info . bits_per_pixel == 32 ) ) { register unsigned int sample ; if ( bmp_info . red_mask != 0 ) while ( ( ( bmp_info . red_mask << shift . red ) & 0x80000000UL ) == 0 ) { shift . red ++ ; if ( shift . red >= 32U ) break ; } if ( bmp_info . green_mask != 0 ) while ( ( ( bmp_info . green_mask << shift . green ) & 0x80000000UL ) == 0 ) { shift . green ++ ; if ( shift . green >= 32U ) break ; } if ( bmp_info . blue_mask != 0 ) while ( ( ( bmp_info . blue_mask << shift . blue ) & 0x80000000UL ) == 0 ) { shift . blue ++ ; if ( shift . blue >= 32U ) break ; } if ( bmp_info . alpha_mask != 0 ) while ( ( ( bmp_info . alpha_mask << shift . alpha ) & 0x80000000UL ) == 0 ) { shift . alpha ++ ; if ( shift . alpha >= 32U ) break ; } sample = shift . red ; while ( ( ( bmp_info . red_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . red = ( MagickRealType ) ( sample - shift . red ) ; sample = shift . green ; while ( ( ( bmp_info . green_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . green = ( MagickRealType ) ( sample - shift . green ) ; sample = shift . blue ; while ( ( ( bmp_info . blue_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . blue = ( MagickRealType ) ( sample - shift . blue ) ; sample = shift . alpha ; while ( ( ( bmp_info . alpha_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . alpha = ( MagickRealType ) ( sample - shift . alpha ) ; } switch ( bmp_info . bits_per_pixel ) { case 1 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 4 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; ValidateColormapValue ( image , ( ssize_t ) ( * p & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0xf ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; x ++ ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 8 : { if ( ( bmp_info . compression == BI_RLE8 ) || ( bmp_info . compression == BI_RLE4 ) ) bytes_per_line = image -> columns ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = ( ssize_t ) image -> columns ; x != 0 ; -- x ) { ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 16 : { unsigned int alpha , pixel ; if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 2 * ( image -> columns + image -> columns % 2 ) ; image -> storage_class = DirectClass ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( * p ++ ) << 8 ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 5 ) red |= ( ( red & 0xe000 ) >> 5 ) ; if ( quantum_bits . red <= 8 ) red |= ( ( red & 0xff00 ) >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 5 ) green |= ( ( green & 0xe000 ) >> 5 ) ; if ( quantum_bits . green == 6 ) green |= ( ( green & 0xc000 ) >> 6 ) ; if ( quantum_bits . green <= 8 ) green |= ( ( green & 0xff00 ) >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 5 ) blue |= ( ( blue & 0xe000 ) >> 5 ) ; if ( quantum_bits . blue <= 8 ) blue |= ( ( blue & 0xff00 ) >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha <= 8 ) alpha |= ( ( alpha & 0xff00 ) >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 24 : { bytes_per_line = 4 * ( ( image -> columns * 24 + 31 ) / 32 ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 32 : { if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { unsigned int alpha , pixel ; p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( ( unsigned int ) * p ++ << 8 ) ; pixel |= ( ( unsigned int ) * p ++ << 16 ) ; pixel |= ( ( unsigned int ) * p ++ << 24 ) ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 8 ) red |= ( red >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 8 ) green |= ( green >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 8 ) blue |= ( blue >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha == 8 ) alpha |= ( alpha >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } default : { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( y > 0 ) break ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( bmp_info . height < 0 ) { Image * flipped_image ; flipped_image = FlipImage ( image , exception ) ; if ( flipped_image != ( Image * ) NULL ) { DuplicateBlob ( flipped_image , image ) ; ReplaceImageInList ( & image , flipped_image ) ; image = flipped_image ; } } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; * magick = '\\\\0' ; if ( bmp_info . ba_offset != 0 ) { offset = SeekBlob ( image , ( MagickOffsetType ) bmp_info . ba_offset , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } count = ReadBlob ( image , 2 , magick ) ; if ( ( count == 2 ) && ( IsBMP ( magick , 2 ) != MagickFalse ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( IsBMP ( magick , 2 ) != MagickFalse ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ReadBlobLSBLong ( image ) ; if ( bmp_info . number_colors > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9922\n\n```\nCWE-264 static int ovl_fill_super ( struct super_block * sb , void * data , int silent ) { struct path lowerpath ; struct path upperpath ; struct path workpath ; struct inode * root_inode ; struct dentry * root_dentry ; struct ovl_entry * oe ; struct ovl_fs * ufs ; struct kstatfs statfs ; int err ; err = - ENOMEM ; ufs = kzalloc ( sizeof ( struct ovl_fs ) , GFP_KERNEL ) ; if ( ! ufs ) goto out ; err = ovl_parse_opt ( ( char * ) data , & ufs -> config ) ; if ( err ) goto out_free_config ; err = - EINVAL ; if ( ! ufs -> config . upperdir || ! ufs -> config . lowerdir || ! ufs -> config . workdir ) { pr_err ( \"overlayfs:<S2SV_blank>missing<S2SV_blank>upperdir<S2SV_blank>or<S2SV_blank>lowerdir<S2SV_blank>or<S2SV_blank>workdir\\\\n\" ) ; goto out_free_config ; } err = - ENOMEM ; oe = ovl_alloc_entry ( ) ; if ( oe == NULL ) goto out_free_config ; err = ovl_mount_dir ( ufs -> config . upperdir , & upperpath ) ; if ( err ) goto out_free_oe ; err = ovl_mount_dir ( ufs -> config . lowerdir , & lowerpath ) ; if ( err ) goto out_put_upperpath ; err = ovl_mount_dir ( ufs -> config . workdir , & workpath ) ; if ( err ) goto out_put_lowerpath ; err = - EINVAL ; if ( ! S_ISDIR ( upperpath . dentry -> d_inode -> i_mode ) || ! S_ISDIR ( lowerpath . dentry -> d_inode -> i_mode ) || ! S_ISDIR ( workpath . dentry -> d_inode -> i_mode ) ) { pr_err ( \"overlayfs:<S2SV_blank>upperdir<S2SV_blank>or<S2SV_blank>lowerdir<S2SV_blank>or<S2SV_blank>workdir<S2SV_blank>not<S2SV_blank>a<S2SV_blank>directory\\\\n\" ) ; goto out_put_workpath ; } if ( upperpath . mnt != workpath . mnt ) { pr_err ( \"overlayfs:<S2SV_blank>workdir<S2SV_blank>and<S2SV_blank>upperdir<S2SV_blank>must<S2SV_blank>reside<S2SV_blank>under<S2SV_blank>the<S2SV_blank>same<S2SV_blank>mount\\\\n\" ) ; goto out_put_workpath ; } if ( ! ovl_workdir_ok ( workpath . dentry , upperpath . dentry ) ) { pr_err ( \"overlayfs:<S2SV_blank>workdir<S2SV_blank>and<S2SV_blank>upperdir<S2SV_blank>must<S2SV_blank>be<S2SV_blank>separate<S2SV_blank>subtrees\\\\n\" ) ; goto out_put_workpath ; } if ( ! ovl_is_allowed_fs_type ( upperpath . dentry ) ) { pr_err ( \"overlayfs:<S2SV_blank>filesystem<S2SV_blank>of<S2SV_blank>upperdir<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; goto out_put_workpath ; } if ( ! ovl_is_allowed_fs_type ( lowerpath . dentry ) ) { pr_err ( \"overlayfs:<S2SV_blank>filesystem<S2SV_blank>of<S2SV_blank>lowerdir<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; goto out_put_workpath ; } err = vfs_statfs ( & lowerpath , & statfs ) ; if ( err ) { pr_err ( \"overlayfs:<S2SV_blank>statfs<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>lowerpath\\\\n\" ) ; goto out_put_workpath ; } ufs -> lower_namelen = statfs . f_namelen ; <S2SV_StartBug> ufs -> upper_mnt = clone_private_mount ( & upperpath ) ; <S2SV_EndBug> err = PTR_ERR ( ufs -> upper_mnt ) ; if ( IS_ERR ( ufs -> upper_mnt ) ) { pr_err ( \"overlayfs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>clone<S2SV_blank>upperpath\\\\n\" ) ; goto out_put_workpath ; } ufs -> lower_mnt = clone_private_mount ( & lowerpath ) ; err = PTR_ERR ( ufs -> lower_mnt ) ; if ( IS_ERR ( ufs -> lower_mnt ) ) { pr_err ( \"overlayfs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>clone<S2SV_blank>lowerpath\\\\n\" ) ; goto out_put_upper_mnt ; } ufs -> workdir = ovl_workdir_create ( ufs -> upper_mnt , workpath . dentry ) ; err = PTR_ERR ( ufs -> workdir ) ; if ( IS_ERR ( ufs -> workdir ) ) { pr_err ( \"overlayfs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>directory<S2SV_blank>%s/%s\\\\n\" , ufs -> config . workdir , OVL_WORKDIR_NAME ) ; goto out_put_lower_mnt ; } ufs -> lower_mnt -> mnt_flags |= MNT_READONLY ; if ( ufs -> upper_mnt -> mnt_sb -> s_flags & MS_RDONLY ) sb -> s_flags |= MS_RDONLY ; sb -> s_d_op = & ovl_dentry_operations ; err = - ENOMEM ; root_inode = ovl_new_inode ( sb , S_IFDIR , oe ) ; if ( ! root_inode ) goto out_put_workdir ; root_dentry = d_make_root ( root_inode ) ; if ( ! root_dentry ) goto out_put_workdir ; mntput ( upperpath . mnt ) ; mntput ( lowerpath . mnt ) ; path_put ( & workpath ) ; oe -> __upperdentry = upperpath . dentry ; oe -> lowerdentry = lowerpath . dentry ; root_dentry -> d_fsdata = oe ; sb -> s_magic = OVERLAYFS_SUPER_MAGIC ; sb -> s_op = & ovl_super_operations ; sb -> s_root = root_dentry ; sb -> s_fs_info = ufs ; return 0 ; out_put_workdir : dput ( ufs -> workdir ) ; out_put_lower_mnt : mntput ( ufs -> lower_mnt ) ; out_put_upper_mnt : mntput ( ufs -> upper_mnt ) ; out_put_workpath : path_put ( & workpath ) ; out_put_lowerpath : path_put ( & lowerpath ) ; out_put_upperpath : path_put ( & upperpath ) ; out_free_oe : kfree ( oe ) ; out_free_config : kfree ( ufs -> config . lowerdir ) ; kfree ( ufs -> config . upperdir ) ; kfree ( ufs -> config . workdir ) ; kfree ( ufs ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . f_namelen ; sb -> s_stack_depth = max ( upperpath . mnt -> mnt_sb -> s_stack_depth , lowerpath . mnt -> mnt_sb -> s_stack_depth ) + 1 ; err = - EINVAL ; if ( sb -> s_stack_depth > FILESYSTEM_MAX_STACK_DEPTH ) { pr_err ( \"overlayfs:<S2SV_blank>maximum<S2SV_blank>fs<S2SV_blank>stacking<S2SV_blank>depth<S2SV_blank>exceeded\\\\n\" ) ; goto out_put_workpath ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void down2_symodd ( const uint8_t * const input , int length , uint8_t * output ) { <S2SV_StartBug> static const int16_t * filter = vp9_down2_symodd_half_filter ; <S2SV_EndBug> const int filter_len_half = sizeof ( vp9_down2_symodd_half_filter ) / 2 ; int i , j ; uint8_t * optr = output ; int l1 = filter_len_half - 1 ; int l2 = ( length - filter_len_half + 1 ) ; l1 += ( l1 & 1 ) ; l2 += ( l2 & 1 ) ; if ( l1 > l2 ) { for ( i = 0 ; i < length ; i += 2 ) { int sum = ( 1 << ( FILTER_BITS - 1 ) ) + input [ i ] * filter [ 0 ] ; for ( j = 1 ; j < filter_len_half ; ++ j ) { sum += ( input [ ( i - j < 0 ? 0 : i - j ) ] + input [ ( i + j >= length ? length - 1 : i + j ) ] ) * filter [ j ] ; } sum >>= FILTER_BITS ; * optr ++ = clip_pixel ( sum ) ; } } else { for ( i = 0 ; i < l1 ; i += 2 ) { int sum = ( 1 << ( FILTER_BITS - 1 ) ) + input [ i ] * filter [ 0 ] ; for ( j = 1 ; j < filter_len_half ; ++ j ) { sum += ( input [ ( i - j < 0 ? 0 : i - j ) ] + input [ i + j ] ) * filter [ j ] ; } sum >>= FILTER_BITS ; * optr ++ = clip_pixel ( sum ) ; } for ( ; i < l2 ; i += 2 ) { int sum = ( 1 << ( FILTER_BITS - 1 ) ) + input [ i ] * filter [ 0 ] ; for ( j = 1 ; j < filter_len_half ; ++ j ) { sum += ( input [ i - j ] + input [ i + j ] ) * filter [ j ] ; } sum >>= FILTER_BITS ; * optr ++ = clip_pixel ( sum ) ; } for ( ; i < length ; i += 2 ) { int sum = ( 1 << ( FILTER_BITS - 1 ) ) + input [ i ] * filter [ 0 ] ; for ( j = 1 ; j < filter_len_half ; ++ j ) { sum += ( input [ i - j ] + input [ ( i + j >= length ? length - 1 : i + j ) ] ) * filter [ j ] ; } sum >>= FILTER_BITS ; * optr ++ = clip_pixel ( sum ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> output ) { <S2SV_ModEnd> const int16_t *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6214\n\n```\nCWE-835 ssize_t tcp_splice_read ( struct socket * sock , loff_t * ppos , struct pipe_inode_info * pipe , size_t len , unsigned int flags ) { struct sock * sk = sock -> sk ; struct tcp_splice_state tss = { . pipe = pipe , . len = len , . flags = flags , } ; long timeo ; ssize_t spliced ; int ret ; sock_rps_record_flow ( sk ) ; if ( unlikely ( * ppos ) ) return - ESPIPE ; ret = spliced = 0 ; lock_sock ( sk ) ; timeo = sock_rcvtimeo ( sk , sock -> file -> f_flags & O_NONBLOCK ) ; while ( tss . len ) { ret = __tcp_splice_read ( sk , & tss ) ; if ( ret < 0 ) break ; else if ( ! ret ) { if ( spliced ) break ; if ( sock_flag ( sk , SOCK_DONE ) ) break ; if ( sk -> sk_err ) { ret = sock_error ( sk ) ; break ; } if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; if ( sk -> sk_state == TCP_CLOSE ) { if ( ! sock_flag ( sk , SOCK_DONE ) ) ret = - ENOTCONN ; break ; } if ( ! timeo ) { ret = - EAGAIN ; break ; } <S2SV_StartBug> sk_wait_data ( sk , & timeo , NULL ) ; <S2SV_EndBug> if ( signal_pending ( current ) ) { ret = sock_intr_errno ( timeo ) ; break ; } continue ; } tss . len -= ret ; spliced += ret ; if ( ! timeo ) break ; release_sock ( sk ) ; lock_sock ( sk ) ; if ( sk -> sk_err || sk -> sk_state == TCP_CLOSE || ( sk -> sk_shutdown & RCV_SHUTDOWN ) || signal_pending ( current ) ) break ; } release_sock ( sk ) ; if ( spliced ) return spliced ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } if ( ! skb_queue_empty ( & sk -> sk_receive_queue ) ) break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14349\n\n```\nCWE-20 static int cmd_handle_untagged ( struct ImapData * idata ) { unsigned int count = 0 ; char * s = imap_next_word ( idata -> buf ) ; char * pn = imap_next_word ( s ) ; if ( ( idata -> state >= IMAP_SELECTED ) && isdigit ( ( unsigned char ) * s ) ) { pn = s ; s = imap_next_word ( s ) ; if ( mutt_str_strncasecmp ( \"EXISTS\" , s , 6 ) == 0 ) { mutt_debug ( 2 , \"Handling<S2SV_blank>EXISTS\\\\n\" ) ; if ( mutt_str_atoui ( pn , & count ) < 0 ) { mutt_debug ( 1 , \"Malformed<S2SV_blank>EXISTS:<S2SV_blank>\\'%s\\'\\\\n\" , pn ) ; } if ( ! ( idata -> reopen & IMAP_EXPUNGE_PENDING ) && count < idata -> max_msn ) { mutt_debug ( 1 , \"Message<S2SV_blank>count<S2SV_blank>is<S2SV_blank>out<S2SV_blank>of<S2SV_blank>sync\\\\n\" ) ; return 0 ; } else if ( count == idata -> max_msn ) mutt_debug ( 3 , \"superfluous<S2SV_blank>EXISTS<S2SV_blank>message.\\\\n\" ) ; else { if ( ! ( idata -> reopen & IMAP_EXPUNGE_PENDING ) ) { mutt_debug ( 2 , \"New<S2SV_blank>mail<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>%d<S2SV_blank>messages<S2SV_blank>total.\\\\n\" , idata -> mailbox , count ) ; idata -> reopen |= IMAP_NEWMAIL_PENDING ; } idata -> new_mail_count = count ; } } else if ( mutt_str_strncasecmp ( \"EXPUNGE\" , s , 7 ) == 0 ) cmd_parse_expunge ( idata , pn ) ; else if ( mutt_str_strncasecmp ( \"FETCH\" , s , 5 ) == 0 ) cmd_parse_fetch ( idata , pn ) ; } else if ( mutt_str_strncasecmp ( \"CAPABILITY\" , s , 10 ) == 0 ) cmd_parse_capability ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"OK<S2SV_blank>[CAPABILITY\" , s , 14 ) == 0 ) cmd_parse_capability ( idata , pn ) ; else if ( mutt_str_strncasecmp ( \"OK<S2SV_blank>[CAPABILITY\" , pn , 14 ) == 0 ) cmd_parse_capability ( idata , imap_next_word ( pn ) ) ; else if ( mutt_str_strncasecmp ( \"LIST\" , s , 4 ) == 0 ) cmd_parse_list ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"LSUB\" , s , 4 ) == 0 ) cmd_parse_lsub ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"MYRIGHTS\" , s , 8 ) == 0 ) cmd_parse_myrights ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"SEARCH\" , s , 6 ) == 0 ) cmd_parse_search ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"STATUS\" , s , 6 ) == 0 ) cmd_parse_status ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"ENABLED\" , s , 7 ) == 0 ) cmd_parse_enabled ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"BYE\" , s , 3 ) == 0 ) { mutt_debug ( 2 , \"Handling<S2SV_blank>BYE\\\\n\" ) ; if ( idata -> status == IMAP_BYE ) return 0 ; s += 3 ; SKIPWS ( s ) ; mutt_error ( \"%s\" , s ) ; cmd_handle_fatal ( idata ) ; return - 1 ; } else if ( ImapServernoise && ( mutt_str_strncasecmp ( \"NO\" , s , 2 ) == 0 ) ) { mutt_debug ( 2 , \"Handling<S2SV_blank>untagged<S2SV_blank>NO\\\\n\" ) ; <S2SV_StartBug> mutt_error ( \"%s\" , s + 3 ) ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , s + 2 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7946\n\n```\nCWE-416 static int init_items ( struct MACH0_ ( obj_t ) * bin ) { struct load_command lc = { 0 , 0 } ; ut8 loadc [ sizeof ( struct load_command ) ] = { 0 } ; bool is_first_thread = true ; ut64 off = 0LL ; int i , len ; bin -> uuidn = 0 ; bin -> os = 0 ; bin -> has_crypto = 0 ; if ( bin -> hdr . sizeofcmds > bin -> size ) { bprintf ( \"Warning:<S2SV_blank>chopping<S2SV_blank>hdr.sizeofcmds\\\\n\" ) ; bin -> hdr . sizeofcmds = bin -> size - 128 ; } for ( i = 0 , off = sizeof ( struct MACH0_ ( mach_header ) ) ; i < bin -> hdr . ncmds ; i ++ , off += lc . cmdsize ) { if ( off > bin -> size || off + sizeof ( struct load_command ) > bin -> size ) { bprintf ( \"mach0:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds<S2SV_blank>command\\\\n\" ) ; return false ; } len = r_buf_read_at ( bin -> b , off , loadc , sizeof ( struct load_command ) ) ; if ( len < 1 ) { bprintf ( \"Error:<S2SV_blank>read<S2SV_blank>(lc)<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , off ) ; return false ; } lc . cmd = r_read_ble32 ( & loadc [ 0 ] , bin -> big_endian ) ; lc . cmdsize = r_read_ble32 ( & loadc [ 4 ] , bin -> big_endian ) ; if ( lc . cmdsize < 1 || off + lc . cmdsize > bin -> size ) { bprintf ( \"Warning:<S2SV_blank>mach0_header<S2SV_blank>%d<S2SV_blank>=<S2SV_blank>cmdsize<1.\\\\n\" , i ) ; break ; } sdb_num_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.offset\" , i ) , off , 0 ) ; sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.format\" , i ) , \"xd<S2SV_blank>cmd<S2SV_blank>size\" , 0 ) ; switch ( lc . cmd ) { case LC_DATA_IN_CODE : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"data_in_code\" , 0 ) ; break ; case LC_RPATH : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"rpath\" , 0 ) ; break ; case LC_SEGMENT_64 : case LC_SEGMENT : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"segment\" , 0 ) ; bin -> nsegs ++ ; if ( ! parse_segments ( bin , off ) ) { bprintf ( \"error<S2SV_blank>parsing<S2SV_blank>segment\\\\n\" ) ; bin -> nsegs -- ; return false ; } break ; case LC_SYMTAB : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"symtab\" , 0 ) ; if ( ! parse_symtab ( bin , off ) ) { bprintf ( \"error<S2SV_blank>parsing<S2SV_blank>symtab\\\\n\" ) ; return false ; } break ; case LC_DYSYMTAB : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dysymtab\" , 0 ) ; if ( ! parse_dysymtab ( bin , off ) ) { bprintf ( \"error<S2SV_blank>parsing<S2SV_blank>dysymtab\\\\n\" ) ; return false ; } break ; case LC_DYLIB_CODE_SIGN_DRS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dylib_code_sign_drs\" , 0 ) ; break ; case LC_VERSION_MIN_MACOSX : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version_min_macosx\" , 0 ) ; bin -> os = 1 ; break ; case LC_VERSION_MIN_IPHONEOS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version_min_iphoneos\" , 0 ) ; bin -> os = 2 ; break ; case LC_VERSION_MIN_TVOS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version_min_tvos\" , 0 ) ; bin -> os = 4 ; break ; case LC_VERSION_MIN_WATCHOS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version_min_watchos\" , 0 ) ; bin -> os = 3 ; break ; case LC_UUID : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"uuid\" , 0 ) ; { struct uuid_command uc = { 0 } ; if ( off + sizeof ( struct uuid_command ) > bin -> size ) { bprintf ( \"UUID<S2SV_blank>out<S2SV_blank>of<S2SV_blank>obunds\\\\n\" ) ; return false ; } if ( r_buf_fread_at ( bin -> b , off , ( ut8 * ) & uc , \"24c\" , 1 ) != - 1 ) { char key [ 128 ] ; char val [ 128 ] ; snprintf ( key , sizeof ( key ) - 1 , \"uuid.%d\" , bin -> uuidn ++ ) ; r_hex_bin2str ( ( ut8 * ) & uc . uuid , 16 , val ) ; sdb_set ( bin -> kv , key , val , 0 ) ; } } break ; case LC_ENCRYPTION_INFO_64 : case LC_ENCRYPTION_INFO : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"encryption_info\" , 0 ) ; { struct MACH0_ ( encryption_info_command ) eic = { 0 } ; ut8 seic [ sizeof ( struct MACH0_ ( encryption_info_command ) ) ] = { 0 } ; if ( off + sizeof ( struct MACH0_ ( encryption_info_command ) ) > bin -> size ) { bprintf ( \"encryption<S2SV_blank>info<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds\\\\n\" ) ; return false ; } if ( r_buf_read_at ( bin -> b , off , seic , sizeof ( struct MACH0_ ( encryption_info_command ) ) ) != - 1 ) { eic . cmd = r_read_ble32 ( & seic [ 0 ] , bin -> big_endian ) ; eic . cmdsize = r_read_ble32 ( & seic [ 4 ] , bin -> big_endian ) ; eic . cryptoff = r_read_ble32 ( & seic [ 8 ] , bin -> big_endian ) ; eic . cryptsize = r_read_ble32 ( & seic [ 12 ] , bin -> big_endian ) ; eic . cryptid = r_read_ble32 ( & seic [ 16 ] , bin -> big_endian ) ; bin -> has_crypto = eic . cryptid ; sdb_set ( bin -> kv , \"crypto\" , \"true\" , 0 ) ; sdb_num_set ( bin -> kv , \"cryptid\" , eic . cryptid , 0 ) ; sdb_num_set ( bin -> kv , \"cryptoff\" , eic . cryptoff , 0 ) ; sdb_num_set ( bin -> kv , \"cryptsize\" , eic . cryptsize , 0 ) ; sdb_num_set ( bin -> kv , \"cryptheader\" , off , 0 ) ; } } break ; case LC_LOAD_DYLINKER : { sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dylinker\" , 0 ) ; free ( bin -> intrp ) ; bin -> intrp = NULL ; struct dylinker_command dy = { 0 } ; ut8 sdy [ sizeof ( struct dylinker_command ) ] = { 0 } ; if ( off + sizeof ( struct dylinker_command ) > bin -> size ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>parse<S2SV_blank>dylinker<S2SV_blank>command\\\\n\" ) ; return false ; } if ( r_buf_read_at ( bin -> b , off , sdy , sizeof ( struct dylinker_command ) ) == - 1 ) { bprintf ( \"Warning:<S2SV_blank>read<S2SV_blank>(LC_DYLD_INFO)<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , off ) ; } else { dy . cmd = r_read_ble32 ( & sdy [ 0 ] , bin -> big_endian ) ; dy . cmdsize = r_read_ble32 ( & sdy [ 4 ] , bin -> big_endian ) ; dy . name = r_read_ble32 ( & sdy [ 8 ] , bin -> big_endian ) ; int len = dy . cmdsize ; char * buf = malloc ( len + 1 ) ; if ( buf ) { r_buf_read_at ( bin -> b , off + 0xc , ( ut8 * ) buf , len ) ; buf [ len ] = 0 ; free ( bin -> intrp ) ; bin -> intrp = buf ; } } } break ; case LC_MAIN : { struct { ut64 eo ; ut64 ss ; } ep = { 0 } ; ut8 sep [ 2 * sizeof ( ut64 ) ] = { 0 } ; sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"main\" , 0 ) ; if ( ! is_first_thread ) { bprintf ( \"Error:<S2SV_blank>LC_MAIN<S2SV_blank>with<S2SV_blank>other<S2SV_blank>threads\\\\n\" ) ; return false ; } if ( off + 8 > bin -> size || off + sizeof ( ep ) > bin -> size ) { bprintf ( \"invalid<S2SV_blank>command<S2SV_blank>size<S2SV_blank>for<S2SV_blank>main\\\\n\" ) ; return false ; } r_buf_read_at ( bin -> b , off + 8 , sep , 2 * sizeof ( ut64 ) ) ; ep . eo = r_read_ble64 ( & sep [ 0 ] , bin -> big_endian ) ; ep . ss = r_read_ble64 ( & sep [ 8 ] , bin -> big_endian ) ; bin -> entry = ep . eo ; bin -> main_cmd = lc ; sdb_num_set ( bin -> kv , \"mach0.entry.offset\" , off + 8 , 0 ) ; sdb_num_set ( bin -> kv , \"stacksize\" , ep . ss , 0 ) ; is_first_thread = false ; } break ; case LC_UNIXTHREAD : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"unixthread\" , 0 ) ; if ( ! is_first_thread ) { bprintf ( \"Error:<S2SV_blank>LC_UNIXTHREAD<S2SV_blank>with<S2SV_blank>other<S2SV_blank>threads\\\\n\" ) ; return false ; } case LC_THREAD : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"thread\" , 0 ) ; if ( ! parse_thread ( bin , & lc , off , is_first_thread ) ) { bprintf ( \"Cannot<S2SV_blank>parse<S2SV_blank>thread\\\\n\" ) ; return false ; } is_first_thread = false ; break ; case LC_LOAD_DYLIB : case LC_LOAD_WEAK_DYLIB : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"load_dylib\" , 0 ) ; bin -> nlibs ++ ; if ( ! parse_dylib ( bin , off ) ) { bprintf ( \"Cannot<S2SV_blank>parse<S2SV_blank>dylib\\\\n\" ) ; bin -> nlibs -- ; return false ; } break ; case LC_DYLD_INFO : case LC_DYLD_INFO_ONLY : { ut8 dyldi [ sizeof ( struct dyld_info_command ) ] = { 0 } ; sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dyld_info\" , 0 ) ; <S2SV_StartBug> bin -> dyld_info = malloc ( sizeof ( struct dyld_info_command ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( off + sizeof ( struct dyld_info_command ) > bin -> size ) { <S2SV_EndBug> bprintf ( \"Cannot<S2SV_blank>parse<S2SV_blank>dyldinfo\\\\n\" ) ; <S2SV_StartBug> free ( bin -> dyld_info ) ; <S2SV_EndBug> return false ; } if ( r_buf_read_at ( bin -> b , off , dyldi , sizeof ( struct dyld_info_command ) ) == - 1 ) { free ( bin -> dyld_info ) ; bin -> dyld_info = NULL ; bprintf ( \"Error:<S2SV_blank>read<S2SV_blank>(LC_DYLD_INFO)<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , off ) ; } else { bin -> dyld_info -> cmd = r_read_ble32 ( & dyldi [ 0 ] , bin -> big_endian ) ; bin -> dyld_info -> cmdsize = r_read_ble32 ( & dyldi [ 4 ] , bin -> big_endian ) ; bin -> dyld_info -> rebase_off = r_read_ble32 ( & dyldi [ 8 ] , bin -> big_endian ) ; bin -> dyld_info -> rebase_size = r_read_ble32 ( & dyldi [ 12 ] , bin -> big_endian ) ; bin -> dyld_info -> bind_off = r_read_ble32 ( & dyldi [ 16 ] , bin -> big_endian ) ; bin -> dyld_info -> bind_size = r_read_ble32 ( & dyldi [ 20 ] , bin -> big_endian ) ; bin -> dyld_info -> weak_bind_off = r_read_ble32 ( & dyldi [ 24 ] , bin -> big_endian ) ; bin -> dyld_info -> weak_bind_size = r_read_ble32 ( & dyldi [ 28 ] , bin -> big_endian ) ; bin -> dyld_info -> lazy_bind_off = r_read_ble32 ( & dyldi [ 32 ] , bin -> big_endian ) ; bin -> dyld_info -> lazy_bind_size = r_read_ble32 ( & dyldi [ 36 ] , bin -> big_endian ) ; bin -> dyld_info -> export_off = r_read_ble32 ( & dyldi [ 40 ] , bin -> big_endian ) ; bin -> dyld_info -> export_size = r_read_ble32 ( & dyldi [ 44 ] , bin -> big_endian ) ; } } <S2SV_StartBug> break ; <S2SV_EndBug> case LC_CODE_SIGNATURE : parse_signature ( bin , off ) ; sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"signature\" , 0 ) ; break ; case LC_SOURCE_VERSION : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version\" , 0 ) ; break ; case LC_SEGMENT_SPLIT_INFO : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"split_info\" , 0 ) ; break ; case LC_FUNCTION_STARTS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"function_starts\" , 0 ) ; if ( ! parse_function_starts ( bin , off ) ) { bprintf ( \"Cannot<S2SV_blank>parse<S2SV_blank>LC_FUNCTION_STARTS\\\\n\" ) ; } break ; case LC_REEXPORT_DYLIB : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dylib\" , 0 ) ; break ; default : break ; } } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> dyld_info = calloc ( 1 , <S2SV_ModEnd> sizeof ( struct <S2SV_ModStart> ; if ( bin -> dyld_info ) { if ( <S2SV_ModStart> \"Cannot<S2SV_blank>parse<S2SV_blank>dyldinfo\\\\n\" ) ; R_FREE <S2SV_ModEnd> ( bin -> <S2SV_ModStart> ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 static int mem_write ( jas_stream_obj_t * obj , char * buf , int cnt ) { <S2SV_StartBug> int n ; <S2SV_EndBug> int ret ; jas_stream_memobj_t * m = ( jas_stream_memobj_t * ) obj ; <S2SV_StartBug> long newbufsize ; <S2SV_EndBug> long newpos ; assert ( buf ) ; assert ( cnt >= 0 ) ; JAS_DBGLOG ( 100 , ( \"mem_write(%p,<S2SV_blank>%p,<S2SV_blank>%d)\\\\n\" , obj , buf , cnt ) ) ; newpos = m -> pos_ + cnt ; if ( newpos > m -> bufsize_ && m -> growable_ ) { newbufsize = m -> bufsize_ ; while ( newbufsize < newpos ) { <S2SV_StartBug> newbufsize <<= 1 ; <S2SV_EndBug> assert ( newbufsize >= 0 ) ; } <S2SV_StartBug> JAS_DBGLOG ( 100 , ( \"mem_write<S2SV_blank>resizing<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%z\\\\n\" , m -> bufsize_ , <S2SV_EndBug> newbufsize ) ) ; JAS_DBGLOG ( 100 , ( \"mem_write<S2SV_blank>resizing<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%ul\\\\n\" , m -> bufsize_ , JAS_CAST ( unsigned long , newbufsize ) ) ) ; if ( mem_resize ( m , newbufsize ) ) { return - 1 ; } } <S2SV_StartBug> if ( m -> pos_ > m -> len_ ) { <S2SV_EndBug> n = JAS_MIN ( m -> pos_ , m -> bufsize_ ) - m -> len_ ; if ( n > 0 ) { memset ( & m -> buf_ [ m -> len_ ] , 0 , n ) ; m -> len_ += n ; } if ( m -> pos_ != m -> len_ ) { return 0 ; } } n = m -> bufsize_ - m -> pos_ ; ret = JAS_MIN ( n , cnt ) ; if ( ret > 0 ) { memcpy ( & m -> buf_ [ m -> pos_ ] , buf , ret ) ; m -> pos_ += ret ; } if ( m -> pos_ > m -> len_ ) { m -> len_ = m -> pos_ ; } assert ( ret == cnt ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cnt ) { size_t <S2SV_ModEnd> n ; int <S2SV_ModStart> ) obj ; size_t newbufsize ; size_t <S2SV_ModEnd> newpos ; assert <S2SV_ModStart> newpos ) { if ( ! jas_safe_size_mul ( newbufsize , 2 , & newbufsize ) ) { <S2SV_ModEnd> JAS_DBGLOG ( 100 <S2SV_ModStart> 100 , ( \"new<S2SV_blank>buffer<S2SV_blank>size<S2SV_blank>would<S2SV_blank>cause<S2SV_blank>overflow\\\\n\" ) ) ; <S2SV_ModEnd> return - 1 <S2SV_ModStart> ; } } JAS_DBGLOG ( 100 , ( \"mem_write<S2SV_blank>resizing<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%zu\\\\n\" , m -> bufsize_ , newbufsize ) ) ; assert ( newbufsize > 0 ) ; if ( mem_resize ( m , newbufsize ) ) { return - 1 ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 void * Sys_LoadDll ( const char * name , qboolean useSystemLib ) { <S2SV_StartBug> void * dllhandle ; <S2SV_EndBug> if ( useSystemLib ) Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name ) ; if ( ! useSystemLib || ! ( dllhandle = Sys_LoadLibrary ( name ) ) ) { const char * topDir ; char libPath [ MAX_OSPATH ] ; topDir = Sys_BinaryPath ( ) ; if ( ! * topDir ) topDir = \".\" ; Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , topDir ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , topDir , PATH_SEP , name ) ; if ( ! ( dllhandle = Sys_LoadLibrary ( libPath ) ) ) { const char * basePath = Cvar_VariableString ( \"fs_basepath\" ) ; if ( ! basePath || ! * basePath ) basePath = \".\" ; if ( FS_FilenameCompare ( topDir , basePath ) ) { Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , basePath ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , basePath , PATH_SEP , name ) ; dllhandle = Sys_LoadLibrary ( libPath ) ; } if ( ! dllhandle ) Com_Printf ( \"Loading<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>failed\\\\n\" , name ) ; } } return dllhandle ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * dllhandle ; if ( COM_CompareExtension ( name , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , name ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int rfcomm_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct rfcomm_dlc * d = rfcomm_pi ( sk ) -> dlc ; int len ; if ( test_and_clear_bit ( RFCOMM_DEFER_SETUP , & d -> flags ) ) { <S2SV_StartBug> rfcomm_dlc_accept ( d ) ; <S2SV_EndBug> msg -> msg_namelen = 0 ; return 0 ; } len = bt_sock_stream_recvmsg ( iocb , sock , msg , size , flags ) ; lock_sock ( sk ) ; if ( ! ( flags & MSG_PEEK ) && len > 0 ) atomic_sub ( len , & sk -> sk_rmem_alloc ) ; if ( atomic_read ( & sk -> sk_rmem_alloc ) <= ( sk -> sk_rcvbuf >> 2 ) ) rfcomm_dlc_unthrottle ( rfcomm_pi ( sk ) -> dlc ) ; release_sock ( sk ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( d ) <S2SV_ModEnd> ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_bilinear_predict8x4_neon ( unsigned char * src_ptr , int src_pixels_per_line , int xoffset , int yoffset , unsigned char * dst_ptr , int dst_pitch ) { uint8x8_t d0u8 , d1u8 , d2u8 , d3u8 , d4u8 , d5u8 ; uint8x8_t d7u8 , d9u8 , d11u8 , d22u8 , d23u8 , d24u8 , d25u8 , d26u8 ; uint8x16_t q1u8 , q2u8 , q3u8 , q4u8 , q5u8 ; uint16x8_t q1u16 , q2u16 , q3u16 , q4u16 ; uint16x8_t q6u16 , q7u16 , q8u16 , q9u16 , q10u16 ; if ( xoffset == 0 ) { d22u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d23u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d24u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d25u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d26u8 = vld1_u8 ( src_ptr ) ; } else { q1u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q2u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q3u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q4u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q5u8 = vld1q_u8 ( src_ptr ) ; <S2SV_StartBug> d0u8 = vdup_n_u8 ( ( uint8_t ) bifilter4_coeff [ xoffset ] [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> d1u8 = vdup_n_u8 ( ( uint8_t ) bifilter4_coeff [ xoffset ] [ 1 ] ) ; <S2SV_EndBug> q6u16 = vmull_u8 ( vget_low_u8 ( q1u8 ) , d0u8 ) ; q7u16 = vmull_u8 ( vget_low_u8 ( q2u8 ) , d0u8 ) ; q8u16 = vmull_u8 ( vget_low_u8 ( q3u8 ) , d0u8 ) ; q9u16 = vmull_u8 ( vget_low_u8 ( q4u8 ) , d0u8 ) ; q10u16 = vmull_u8 ( vget_low_u8 ( q5u8 ) , d0u8 ) ; d3u8 = vext_u8 ( vget_low_u8 ( q1u8 ) , vget_high_u8 ( q1u8 ) , 1 ) ; d5u8 = vext_u8 ( vget_low_u8 ( q2u8 ) , vget_high_u8 ( q2u8 ) , 1 ) ; d7u8 = vext_u8 ( vget_low_u8 ( q3u8 ) , vget_high_u8 ( q3u8 ) , 1 ) ; d9u8 = vext_u8 ( vget_low_u8 ( q4u8 ) , vget_high_u8 ( q4u8 ) , 1 ) ; d11u8 = vext_u8 ( vget_low_u8 ( q5u8 ) , vget_high_u8 ( q5u8 ) , 1 ) ; q6u16 = vmlal_u8 ( q6u16 , d3u8 , d1u8 ) ; q7u16 = vmlal_u8 ( q7u16 , d5u8 , d1u8 ) ; q8u16 = vmlal_u8 ( q8u16 , d7u8 , d1u8 ) ; q9u16 = vmlal_u8 ( q9u16 , d9u8 , d1u8 ) ; q10u16 = vmlal_u8 ( q10u16 , d11u8 , d1u8 ) ; d22u8 = vqrshrn_n_u16 ( q6u16 , 7 ) ; d23u8 = vqrshrn_n_u16 ( q7u16 , 7 ) ; d24u8 = vqrshrn_n_u16 ( q8u16 , 7 ) ; d25u8 = vqrshrn_n_u16 ( q9u16 , 7 ) ; d26u8 = vqrshrn_n_u16 ( q10u16 , 7 ) ; } if ( yoffset == 0 ) { vst1_u8 ( ( uint8_t * ) dst_ptr , d22u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d23u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d24u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d25u8 ) ; } else { d0u8 = vdup_n_u8 ( bifilter4_coeff [ yoffset ] [ 0 ] ) ; d1u8 = vdup_n_u8 ( bifilter4_coeff [ yoffset ] [ 1 ] ) ; q1u16 = vmull_u8 ( d22u8 , d0u8 ) ; q2u16 = vmull_u8 ( d23u8 , d0u8 ) ; q3u16 = vmull_u8 ( d24u8 , d0u8 ) ; q4u16 = vmull_u8 ( d25u8 , d0u8 ) ; q1u16 = vmlal_u8 ( q1u16 , d23u8 , d1u8 ) ; q2u16 = vmlal_u8 ( q2u16 , d24u8 , d1u8 ) ; q3u16 = vmlal_u8 ( q3u16 , d25u8 , d1u8 ) ; q4u16 = vmlal_u8 ( q4u16 , d26u8 , d1u8 ) ; d2u8 = vqrshrn_n_u16 ( q1u16 , 7 ) ; d3u8 = vqrshrn_n_u16 ( q2u16 , 7 ) ; d4u8 = vqrshrn_n_u16 ( q3u16 , 7 ) ; d5u8 = vqrshrn_n_u16 ( q4u16 , 7 ) ; vst1_u8 ( ( uint8_t * ) dst_ptr , d2u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d3u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d4u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d5u8 ) ; } return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = vdup_n_u8 ( <S2SV_ModEnd> bifilter4_coeff [ xoffset <S2SV_ModStart> = vdup_n_u8 ( <S2SV_ModEnd> bifilter4_coeff [ xoffset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3183\n\n```\nCWE-20 apr_status_t ap_http_filter ( ap_filter_t * f , apr_bucket_brigade * b , ap_input_mode_t mode , apr_read_type_e block , apr_off_t readbytes ) { core_server_config * conf ; apr_bucket * e ; http_ctx_t * ctx = f -> ctx ; apr_status_t rv ; apr_off_t totalread ; int again ; conf = ( core_server_config * ) ap_get_module_config ( f -> r -> server -> module_config , & core_module ) ; if ( mode != AP_MODE_READBYTES && mode != AP_MODE_GETLINE ) { return ap_get_brigade ( f -> next , b , mode , block , readbytes ) ; } if ( ! ctx ) { const char * tenc , * lenp ; f -> ctx = ctx = apr_pcalloc ( f -> r -> pool , sizeof ( * ctx ) ) ; ctx -> state = BODY_NONE ; if ( ! f -> r -> proxyreq ) { ctx -> limit = ap_get_limit_req_body ( f -> r ) ; } else { ctx -> limit = 0 ; } tenc = apr_table_get ( f -> r -> headers_in , \"Transfer-Encoding\" ) ; lenp = apr_table_get ( f -> r -> headers_in , \"Content-Length\" ) ; if ( tenc ) { if ( strcasecmp ( tenc , \"chunked\" ) == 0 || ap_find_last_token ( f -> r -> pool , tenc , \"chunked\" ) ) { ctx -> state = BODY_CHUNK ; } else if ( f -> r -> proxyreq == PROXYREQ_RESPONSE ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 02555 ) <S2SV_StartBug> \"Unknown<S2SV_blank>Transfer-Encoding:<S2SV_blank>%s;\" <S2SV_EndBug> \"<S2SV_blank>using<S2SV_blank>read-until-close\" , tenc ) ; tenc = NULL ; } else { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 01585 ) \"Unknown<S2SV_blank>Transfer-Encoding:<S2SV_blank>%s\" , tenc ) ; return APR_EGENERAL ; } lenp = NULL ; } if ( lenp ) { char * endstr ; ctx -> state = BODY_LENGTH ; if ( apr_strtoff ( & ctx -> remaining , lenp , & endstr , 10 ) || endstr == lenp || * endstr || ctx -> remaining < 0 ) { ctx -> remaining = 0 ; ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 01587 ) \"Invalid<S2SV_blank>Content-Length\" ) ; <S2SV_StartBug> return APR_ENOSPC ; <S2SV_EndBug> } if ( ctx -> limit && ctx -> limit < ctx -> remaining ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 01588 ) \"Requested<S2SV_blank>content-length<S2SV_blank>of<S2SV_blank>%\" APR_OFF_T_FMT \"<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>the<S2SV_blank>configured<S2SV_blank>limit\" \"<S2SV_blank>of<S2SV_blank>%\" APR_OFF_T_FMT , ctx -> remaining , ctx -> limit ) ; return APR_ENOSPC ; } } if ( ctx -> state == BODY_NONE && f -> r -> proxyreq != PROXYREQ_RESPONSE ) { e = apr_bucket_eos_create ( f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_TAIL ( b , e ) ; ctx -> eos_sent = 1 ; return APR_SUCCESS ; } if ( ( ctx -> state == BODY_CHUNK || ( ctx -> state == BODY_LENGTH && ctx -> remaining > 0 ) ) && f -> r -> expecting_100 && f -> r -> proto_num >= HTTP_VERSION ( 1 , 1 ) && ! ( f -> r -> eos_sent || f -> r -> bytes_sent ) ) { if ( ! ap_is_HTTP_SUCCESS ( f -> r -> status ) ) { ctx -> state = BODY_NONE ; ctx -> eos_sent = 1 ; } else { char * tmp ; int len ; apr_bucket_brigade * bb ; bb = apr_brigade_create ( f -> r -> pool , f -> c -> bucket_alloc ) ; f -> r -> expecting_100 = 0 ; tmp = apr_pstrcat ( f -> r -> pool , AP_SERVER_PROTOCOL \"<S2SV_blank>\" , ap_get_status_line ( HTTP_CONTINUE ) , CRLF CRLF , NULL ) ; len = strlen ( tmp ) ; ap_xlate_proto_to_ascii ( tmp , len ) ; e = apr_bucket_pool_create ( tmp , len , f -> r -> pool , f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_HEAD ( bb , e ) ; e = apr_bucket_flush_create ( f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_TAIL ( bb , e ) ; rv = ap_pass_brigade ( f -> c -> output_filters , bb ) ; <S2SV_StartBug> if ( rv != APR_SUCCESS ) { <S2SV_EndBug> return AP_FILTER_ERROR ; } } } } if ( ctx -> eos_sent ) { e = apr_bucket_eos_create ( f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_TAIL ( b , e ) ; return APR_SUCCESS ; } do { apr_brigade_cleanup ( b ) ; again = 0 ; switch ( ctx -> state ) { case BODY_CHUNK : case BODY_CHUNK_PART : case BODY_CHUNK_EXT : <S2SV_StartBug> case BODY_CHUNK_END : { <S2SV_EndBug> rv = ap_get_brigade ( f -> next , b , AP_MODE_GETLINE , block , 0 ) ; if ( block == APR_NONBLOCK_READ && ( ( rv == APR_SUCCESS && APR_BRIGADE_EMPTY ( b ) ) || ( APR_STATUS_IS_EAGAIN ( rv ) ) ) ) { return APR_EAGAIN ; } if ( rv == APR_EOF ) { return APR_INCOMPLETE ; } if ( rv != APR_SUCCESS ) { return rv ; } e = APR_BRIGADE_FIRST ( b ) ; while ( e != APR_BRIGADE_SENTINEL ( b ) ) { const char * buffer ; apr_size_t len ; if ( ! APR_BUCKET_IS_METADATA ( e ) ) { rv = apr_bucket_read ( e , & buffer , & len , APR_BLOCK_READ ) ; if ( rv == APR_SUCCESS ) { rv = parse_chunk_size ( ctx , buffer , len , f -> r -> server -> limit_req_fieldsize ) ; } if ( rv != APR_SUCCESS ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , rv , f -> r , APLOGNO ( 01590 ) \"Error<S2SV_blank>reading<S2SV_blank>chunk<S2SV_blank>%s<S2SV_blank>\" , ( APR_ENOSPC == rv ) ? \"(overflow)\" : \"\" ) ; return rv ; } } apr_bucket_delete ( e ) ; e = APR_BRIGADE_FIRST ( b ) ; } again = 1 ; if ( ctx -> state == BODY_CHUNK_TRAILER ) { <S2SV_StartBug> int merge_trailers = <S2SV_EndBug> conf -> merge_trailers == AP_MERGE_TRAILERS_ENABLE ; return read_chunked_trailers ( ctx , f , b , merge_trailers ) ; } break ; } case BODY_NONE : case BODY_LENGTH : case BODY_CHUNK_DATA : { if ( ctx -> state != BODY_NONE && ctx -> remaining < readbytes ) { readbytes = ctx -> remaining ; } if ( readbytes > 0 ) { rv = ap_get_brigade ( f -> next , b , mode , block , readbytes ) ; if ( block == APR_NONBLOCK_READ && ( ( rv == APR_SUCCESS && APR_BRIGADE_EMPTY ( b ) ) || ( APR_STATUS_IS_EAGAIN ( rv ) ) ) ) { return APR_EAGAIN ; } if ( rv == APR_EOF && ctx -> state != BODY_NONE && ctx -> remaining > 0 ) { return APR_INCOMPLETE ; } if ( rv != APR_SUCCESS ) { return rv ; } apr_brigade_length ( b , 0 , & totalread ) ; AP_DEBUG_ASSERT ( totalread >= 0 ) ; if ( ctx -> state != BODY_NONE ) { ctx -> remaining -= totalread ; if ( ctx -> remaining > 0 ) { e = APR_BRIGADE_LAST ( b ) ; if ( APR_BUCKET_IS_EOS ( e ) ) { apr_bucket_delete ( e ) ; return APR_INCOMPLETE ; } } else if ( ctx -> state == BODY_CHUNK_DATA ) { ctx -> state = BODY_CHUNK_END ; ctx -> chunk_used = 0 ; } } } if ( ctx -> state == BODY_LENGTH && ctx -> remaining == 0 ) { e = apr_bucket_eos_create ( f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_TAIL ( b , e ) ; ctx -> eos_sent = 1 ; } if ( ctx -> limit ) { ctx -> limit_used += totalread ; if ( ctx -> limit < ctx -> limit_used ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 01591 ) \"Read<S2SV_blank>content-length<S2SV_blank>of<S2SV_blank>%\" APR_OFF_T_FMT \"<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>the<S2SV_blank>configured<S2SV_blank>limit\" \"<S2SV_blank>of<S2SV_blank>%\" APR_OFF_T_FMT , ctx -> limit_used , ctx -> limit ) ; return APR_ENOSPC ; } } break ; } case BODY_CHUNK_TRAILER : { rv = ap_get_brigade ( f -> next , b , mode , block , readbytes ) ; if ( block == APR_NONBLOCK_READ && ( ( rv == APR_SUCCESS && APR_BRIGADE_EMPTY ( b ) ) || ( APR_STATUS_IS_EAGAIN ( rv ) ) ) ) { return APR_EAGAIN ; } if ( rv != APR_SUCCESS ) { return rv ; } break ; } default : { <S2SV_StartBug> break ; <S2SV_EndBug> } } } while ( again ) ; return APR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 02555 ) \"Unknown<S2SV_blank>Transfer-Encoding:<S2SV_blank>%s;<S2SV_blank>\" \"using<S2SV_blank>read-until-close\" <S2SV_ModEnd> , tenc ) <S2SV_ModStart> ) ; return APR_EINVAL <S2SV_ModEnd> ; } if <S2SV_ModStart> bb ) ; apr_brigade_cleanup ( bb ) ; <S2SV_ModStart> BODY_CHUNK_EXT : case BODY_CHUNK_LF : case BODY_CHUNK_END : case BODY_CHUNK_END_LF <S2SV_ModEnd> : { rv <S2SV_ModStart> BODY_CHUNK_TRAILER ) { return read_chunked_trailers ( ctx , f , b , conf -> merge_trailers == AP_MERGE_TRAILERS_ENABLE <S2SV_ModEnd> ) ; } <S2SV_ModStart> default : { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , f -> r , APLOGNO ( 02901 ) \"Unexpected<S2SV_blank>body<S2SV_blank>state<S2SV_blank>(%i)\" , ( int ) ctx -> state ) ; return APR_EGENERAL <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 void dump_global_data ( FILE * fp , data_t * data ) { # ifdef _WITH_VRRP_ char buf [ 64 ] ; # endif if ( ! data ) return ; conf_write ( fp , \"------<<S2SV_blank>Global<S2SV_blank>definitions<S2SV_blank>>------\" ) ; # if HAVE_DECL_CLONE_NEWNET conf_write ( fp , \"<S2SV_blank>Network<S2SV_blank>namespace<S2SV_blank>=<S2SV_blank>%s\" , data -> network_namespace ? data -> network_namespace : \"(default)\" ) ; # endif if ( data -> instance_name ) conf_write ( fp , \"<S2SV_blank>Instance<S2SV_blank>name<S2SV_blank>=<S2SV_blank>%s\" , data -> instance_name ) ; if ( data -> router_id ) conf_write ( fp , \"<S2SV_blank>Router<S2SV_blank>ID<S2SV_blank>=<S2SV_blank>%s\" , data -> router_id ) ; if ( data -> smtp_server . ss_family ) { conf_write ( fp , \"<S2SV_blank>Smtp<S2SV_blank>server<S2SV_blank>=<S2SV_blank>%s\" , inet_sockaddrtos ( & data -> smtp_server ) ) ; conf_write ( fp , \"<S2SV_blank>Smtp<S2SV_blank>server<S2SV_blank>port<S2SV_blank>=<S2SV_blank>%u\" , ntohs ( inet_sockaddrport ( & data -> smtp_server ) ) ) ; } if ( data -> smtp_helo_name ) conf_write ( fp , \"<S2SV_blank>Smtp<S2SV_blank>HELO<S2SV_blank>name<S2SV_blank>=<S2SV_blank>%s\" , data -> smtp_helo_name ) ; if ( data -> smtp_connection_to ) conf_write ( fp , \"<S2SV_blank>Smtp<S2SV_blank>server<S2SV_blank>connection<S2SV_blank>timeout<S2SV_blank>=<S2SV_blank>%lu\" , data -> smtp_connection_to / TIMER_HZ ) ; if ( data -> email_from ) { conf_write ( fp , \"<S2SV_blank>Email<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>=<S2SV_blank>%s\" , data -> email_from ) ; dump_list ( fp , data -> email ) ; } conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>smtp_alert<S2SV_blank>=<S2SV_blank>%s\" , data -> smtp_alert == - 1 ? \"unset\" : data -> smtp_alert ? \"on\" : \"off\" ) ; # ifdef _WITH_VRRP_ conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>smtp_alert_vrrp<S2SV_blank>=<S2SV_blank>%s\" , data -> smtp_alert_vrrp == - 1 ? \"unset\" : data -> smtp_alert_vrrp ? \"on\" : \"off\" ) ; # endif # ifdef _WITH_LVS_ conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>smtp_alert_checker<S2SV_blank>=<S2SV_blank>%s\" , data -> smtp_alert_checker == - 1 ? \"unset\" : data -> smtp_alert_checker ? \"on\" : \"off\" ) ; # endif # ifdef _WITH_VRRP_ conf_write ( fp , \"<S2SV_blank>Dynamic<S2SV_blank>interfaces<S2SV_blank>=<S2SV_blank>%s\" , data -> dynamic_interfaces ? \"true\" : \"false\" ) ; if ( data -> dynamic_interfaces ) conf_write ( fp , \"<S2SV_blank>Allow<S2SV_blank>interface<S2SV_blank>changes<S2SV_blank>=<S2SV_blank>%s\" , data -> allow_if_changes ? \"true\" : \"false\" ) ; if ( data -> no_email_faults ) conf_write ( fp , \"<S2SV_blank>Send<S2SV_blank>emails<S2SV_blank>for<S2SV_blank>fault<S2SV_blank>transitions<S2SV_blank>=<S2SV_blank>off\" ) ; # endif # ifdef _WITH_LVS_ if ( data -> lvs_tcp_timeout ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>TCP<S2SV_blank>timeout<S2SV_blank>=<S2SV_blank>%d\" , data -> lvs_tcp_timeout ) ; if ( data -> lvs_tcpfin_timeout ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>TCP<S2SV_blank>FIN<S2SV_blank>timeout<S2SV_blank>=<S2SV_blank>%d\" , data -> lvs_tcpfin_timeout ) ; if ( data -> lvs_udp_timeout ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>TCP<S2SV_blank>timeout<S2SV_blank>=<S2SV_blank>%d\" , data -> lvs_udp_timeout ) ; # ifdef _WITH_VRRP_ # ifndef _DEBUG_ if ( prog_type == PROG_TYPE_VRRP ) # endif conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>interface<S2SV_blank>=<S2SV_blank>%s\" , data -> default_ifp ? data -> default_ifp -> ifname : DFLT_INT ) ; if ( data -> lvs_syncd . vrrp ) { conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>vrrp<S2SV_blank>instance<S2SV_blank>=<S2SV_blank>%s\" , data -> lvs_syncd . vrrp -> iname ) ; if ( data -> lvs_syncd . ifname ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>interface<S2SV_blank>=<S2SV_blank>%s\" , data -> lvs_syncd . ifname ) ; conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>syncid<S2SV_blank>=<S2SV_blank>%u\" , data -> lvs_syncd . syncid ) ; # ifdef _HAVE_IPVS_SYNCD_ATTRIBUTES_ if ( data -> lvs_syncd . sync_maxlen ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>maxlen<S2SV_blank>=<S2SV_blank>%u\" , data -> lvs_syncd . sync_maxlen ) ; if ( data -> lvs_syncd . mcast_group . ss_family != AF_UNSPEC ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>mcast<S2SV_blank>group<S2SV_blank>%s\" , inet_sockaddrtos ( & data -> lvs_syncd . mcast_group ) ) ; if ( data -> lvs_syncd . mcast_port ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>mcast<S2SV_blank>port<S2SV_blank>=<S2SV_blank>%d\" , data -> lvs_syncd . mcast_port ) ; if ( data -> lvs_syncd . mcast_ttl ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>syncd<S2SV_blank>mcast<S2SV_blank>ttl<S2SV_blank>=<S2SV_blank>%u\" , data -> lvs_syncd . mcast_ttl ) ; # endif } # endif conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>flush<S2SV_blank>=<S2SV_blank>%s\" , data -> lvs_flush ? \"true\" : \"false\" ) ; # endif if ( data -> notify_fifo . name ) { conf_write ( fp , \"<S2SV_blank>Global<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>=<S2SV_blank>%s\" , data -> notify_fifo . name ) ; if ( data -> notify_fifo . script ) conf_write ( fp , \"<S2SV_blank>Global<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>script<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>uid:gid<S2SV_blank>%d:%d\" , cmd_str ( data -> notify_fifo . script ) , data -> notify_fifo . script -> uid , data -> notify_fifo . script -> gid ) ; } # ifdef _WITH_VRRP_ if ( data -> vrrp_notify_fifo . name ) { conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_notify_fifo . name ) ; if ( data -> vrrp_notify_fifo . script ) conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>script<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>uid:gid<S2SV_blank>%d:%d\" , cmd_str ( data -> vrrp_notify_fifo . script ) , data -> vrrp_notify_fifo . script -> uid , data -> vrrp_notify_fifo . script -> gid ) ; } # endif # ifdef _WITH_LVS_ if ( data -> lvs_notify_fifo . name ) { conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>=<S2SV_blank>%s\" , data -> lvs_notify_fifo . name ) ; if ( data -> lvs_notify_fifo . script ) conf_write ( fp , \"<S2SV_blank>LVS<S2SV_blank>notify<S2SV_blank>fifo<S2SV_blank>script<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>uid:gid<S2SV_blank>%d:%d\" , cmd_str ( data -> lvs_notify_fifo . script ) , data -> lvs_notify_fifo . script -> uid , data -> lvs_notify_fifo . script -> gid ) ; } # endif # ifdef _WITH_VRRP_ if ( data -> vrrp_mcast_group4 . sin_family ) { conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>IPv4<S2SV_blank>mcast<S2SV_blank>group<S2SV_blank>=<S2SV_blank>%s\" , inet_sockaddrtos ( ( struct sockaddr_storage * ) & data -> vrrp_mcast_group4 ) ) ; } if ( data -> vrrp_mcast_group6 . sin6_family ) { conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>IPv6<S2SV_blank>mcast<S2SV_blank>group<S2SV_blank>=<S2SV_blank>%s\" , inet_sockaddrtos ( ( struct sockaddr_storage * ) & data -> vrrp_mcast_group6 ) ) ; } conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>delay<S2SV_blank>=<S2SV_blank>%u\" , data -> vrrp_garp_delay / TIMER_HZ ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>repeat<S2SV_blank>=<S2SV_blank>%u\" , data -> vrrp_garp_rep ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>refresh<S2SV_blank>timer<S2SV_blank>=<S2SV_blank>%lu\" , data -> vrrp_garp_refresh . tv_sec ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>refresh<S2SV_blank>repeat<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_garp_refresh_rep ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>lower<S2SV_blank>priority<S2SV_blank>delay<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_garp_lower_prio_delay == PARAMETER_UNSET ? PARAMETER_UNSET : data -> vrrp_garp_lower_prio_delay / TIMER_HZ ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>lower<S2SV_blank>priority<S2SV_blank>repeat<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_garp_lower_prio_rep ) ; conf_write ( fp , \"<S2SV_blank>Send<S2SV_blank>advert<S2SV_blank>after<S2SV_blank>receive<S2SV_blank>lower<S2SV_blank>priority<S2SV_blank>advert<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_lower_prio_no_advert ? \"false\" : \"true\" ) ; conf_write ( fp , \"<S2SV_blank>Send<S2SV_blank>advert<S2SV_blank>after<S2SV_blank>receive<S2SV_blank>higher<S2SV_blank>priority<S2SV_blank>advert<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_higher_prio_send_advert ? \"true\" : \"false\" ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>ARP<S2SV_blank>interval<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_garp_interval ) ; conf_write ( fp , \"<S2SV_blank>Gratuitous<S2SV_blank>NA<S2SV_blank>interval<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_gna_interval ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>default<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_version ) ; if ( data -> vrrp_iptables_inchain [ 0 ] ) conf_write ( fp , \"<S2SV_blank>Iptables<S2SV_blank>input<S2SV_blank>chain<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_iptables_inchain ) ; if ( data -> vrrp_iptables_outchain [ 0 ] ) conf_write ( fp , \"<S2SV_blank>Iptables<S2SV_blank>output<S2SV_blank>chain<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_iptables_outchain ) ; # ifdef _HAVE_LIBIPSET_ conf_write ( fp , \"<S2SV_blank>Using<S2SV_blank>ipsets<S2SV_blank>=<S2SV_blank>%s\" , data -> using_ipsets ? \"true\" : \"false\" ) ; if ( data -> vrrp_ipset_address [ 0 ] ) conf_write ( fp , \"<S2SV_blank>ipset<S2SV_blank>IPv4<S2SV_blank>address<S2SV_blank>set<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_ipset_address ) ; if ( data -> vrrp_ipset_address6 [ 0 ] ) conf_write ( fp , \"<S2SV_blank>ipset<S2SV_blank>IPv6<S2SV_blank>address<S2SV_blank>set<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_ipset_address6 ) ; if ( data -> vrrp_ipset_address_iface6 [ 0 ] ) conf_write ( fp , \"<S2SV_blank>ipset<S2SV_blank>IPv6<S2SV_blank>address,iface<S2SV_blank>set<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_ipset_address_iface6 ) ; # endif conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>check<S2SV_blank>unicast_src<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_check_unicast_src ? \"true\" : \"false\" ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>skip<S2SV_blank>check<S2SV_blank>advert<S2SV_blank>addresses<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_skip_check_adv_addr ? \"true\" : \"false\" ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>strict<S2SV_blank>mode<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_strict ? \"true\" : \"false\" ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>process<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%d\" , data -> vrrp_process_priority ) ; conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>don\\'t<S2SV_blank>swap<S2SV_blank>=<S2SV_blank>%s\" , data -> vrrp_no_swap ? \"true\" : \"false\" ) ; # ifdef _HAVE_SCHED_RT_ conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>realtime<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%u\" , data -> vrrp_realtime_priority ) ; # if HAVE_DECL_RLIMIT_RTTIME conf_write ( fp , \"<S2SV_blank>VRRP<S2SV_blank>realtime<S2SV_blank>limit<S2SV_blank>=<S2SV_blank>%lu\" , data -> vrrp_rlimit_rt ) ; # endif # endif # endif # ifdef _WITH_LVS_ conf_write ( fp , \"<S2SV_blank>Checker<S2SV_blank>process<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%d\" , data -> checker_process_priority ) ; conf_write ( fp , \"<S2SV_blank>Checker<S2SV_blank>don\\'t<S2SV_blank>swap<S2SV_blank>=<S2SV_blank>%s\" , data -> checker_no_swap ? \"true\" : \"false\" ) ; # ifdef _HAVE_SCHED_RT_ conf_write ( fp , \"<S2SV_blank>Checker<S2SV_blank>realtime<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%u\" , data -> checker_realtime_priority ) ; # if HAVE_DECL_RLIMIT_RTTIME conf_write ( fp , \"<S2SV_blank>Checker<S2SV_blank>realtime<S2SV_blank>limit<S2SV_blank>=<S2SV_blank>%lu\" , data -> checker_rlimit_rt ) ; # endif # endif # endif # ifdef _WITH_BFD_ conf_write ( fp , \"<S2SV_blank>BFD<S2SV_blank>process<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%d\" , data -> bfd_process_priority ) ; conf_write ( fp , \"<S2SV_blank>BFD<S2SV_blank>don\\'t<S2SV_blank>swap<S2SV_blank>=<S2SV_blank>%s\" , data -> bfd_no_swap ? \"true\" : \"false\" ) ; # ifdef _HAVE_SCHED_RT_ conf_write ( fp , \"<S2SV_blank>BFD<S2SV_blank>realtime<S2SV_blank>priority<S2SV_blank>=<S2SV_blank>%u\" , data -> bfd_realtime_priority ) ; # if HAVE_DECL_RLIMIT_RTTIME conf_write ( fp , \"<S2SV_blank>BFD<S2SV_blank>realtime<S2SV_blank>limit<S2SV_blank>=<S2SV_blank>%lu\" , data -> bfd_rlimit_rt ) ; # endif # endif # endif # ifdef _WITH_SNMP_VRRP_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>vrrp<S2SV_blank>%s\" , data -> enable_snmp_vrrp ? \"enabled\" : \"disabled\" ) ; # endif # ifdef _WITH_SNMP_CHECKER_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>checker<S2SV_blank>%s\" , data -> enable_snmp_checker ? \"enabled\" : \"disabled\" ) ; # endif # ifdef _WITH_SNMP_RFCV2_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>RFCv2<S2SV_blank>%s\" , data -> enable_snmp_rfcv2 ? \"enabled\" : \"disabled\" ) ; # endif # ifdef _WITH_SNMP_RFCV3_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>RFCv3<S2SV_blank>%s\" , data -> enable_snmp_rfcv3 ? \"enabled\" : \"disabled\" ) ; # endif # ifdef _WITH_SNMP_ conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>traps<S2SV_blank>%s\" , data -> enable_traps ? \"enabled\" : \"disabled\" ) ; conf_write ( fp , \"<S2SV_blank>SNMP<S2SV_blank>socket<S2SV_blank>=<S2SV_blank>%s\" , data -> snmp_socket ? data -> snmp_socket : \"default<S2SV_blank>(unix:/var/agentx/master)\" ) ; # endif # ifdef _WITH_DBUS_ conf_write ( fp , \"<S2SV_blank>DBus<S2SV_blank>%s\" , data -> enable_dbus ? \"enabled\" : \"disabled\" ) ; conf_write ( fp , \"<S2SV_blank>DBus<S2SV_blank>service<S2SV_blank>name<S2SV_blank>=<S2SV_blank>%s\" , data -> dbus_service_name ? data -> dbus_service_name : \"\" ) ; # endif conf_write ( fp , \"<S2SV_blank>Script<S2SV_blank>security<S2SV_blank>%s\" , script_security ? \"enabled\" : \"disabled\" ) ; conf_write ( fp , \"<S2SV_blank>Default<S2SV_blank>script<S2SV_blank>uid:gid<S2SV_blank>%d:%d\" , default_script_uid , default_script_gid ) ; # ifdef _WITH_VRRP_ conf_write ( fp , \"<S2SV_blank>vrrp_netlink_cmd_rcv_bufs<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_netlink_cmd_rcv_bufs ) ; conf_write ( fp , \"<S2SV_blank>vrrp_netlink_cmd_rcv_bufs_force<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_netlink_cmd_rcv_bufs_force ) ; conf_write ( fp , \"<S2SV_blank>vrrp_netlink_monitor_rcv_bufs<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_netlink_monitor_rcv_bufs ) ; conf_write ( fp , \"<S2SV_blank>vrrp_netlink_monitor_rcv_bufs_force<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_netlink_monitor_rcv_bufs_force ) ; # endif # ifdef _WITH_LVS_ conf_write ( fp , \"<S2SV_blank>lvs_netlink_cmd_rcv_bufs<S2SV_blank>=<S2SV_blank>%u\" , global_data -> lvs_netlink_cmd_rcv_bufs ) ; conf_write ( fp , \"<S2SV_blank>lvs_netlink_cmd_rcv_bufs_force<S2SV_blank>=<S2SV_blank>%u\" , global_data -> lvs_netlink_cmd_rcv_bufs_force ) ; conf_write ( fp , \"<S2SV_blank>lvs_netlink_monitor_rcv_bufs<S2SV_blank>=<S2SV_blank>%u\" , global_data -> lvs_netlink_monitor_rcv_bufs ) ; conf_write ( fp , \"<S2SV_blank>lvs_netlink_monitor_rcv_bufs_force<S2SV_blank>=<S2SV_blank>%u\" , global_data -> lvs_netlink_monitor_rcv_bufs_force ) ; conf_write ( fp , \"<S2SV_blank>rs_init_notifies<S2SV_blank>=<S2SV_blank>%u\" , global_data -> rs_init_notifies ) ; conf_write ( fp , \"<S2SV_blank>no_checker_emails<S2SV_blank>=<S2SV_blank>%u\" , global_data -> no_checker_emails ) ; # endif # ifdef _WITH_VRRP_ buf [ 0 ] = '\\\\0' ; if ( global_data -> vrrp_rx_bufs_policy & RX_BUFS_POLICY_MTU ) strcpy ( buf , \"<S2SV_blank>rx_bufs_policy<S2SV_blank>=<S2SV_blank>MTU\" ) ; else if ( global_data -> vrrp_rx_bufs_policy & RX_BUFS_POLICY_ADVERT ) strcpy ( buf , \"<S2SV_blank>rx_bufs_policy<S2SV_blank>=<S2SV_blank>ADVERT\" ) ; else if ( global_data -> vrrp_rx_bufs_policy & RX_BUFS_SIZE ) sprintf ( buf , \"<S2SV_blank>rx_bufs_size<S2SV_blank>=<S2SV_blank>%lu\" , global_data -> vrrp_rx_bufs_size ) ; if ( buf [ 0 ] ) conf_write ( fp , \"%s\" , buf ) ; conf_write ( fp , \"<S2SV_blank>rx_bufs_multiples<S2SV_blank>=<S2SV_blank>%u\" , global_data -> vrrp_rx_bufs_multiples ) ; <S2SV_StartBug> # endif <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vrrp_rx_bufs_multiples ) ; conf_write ( fp , \"<S2SV_blank>umask<S2SV_blank>=<S2SV_blank>0%o\" , global_data -> umask ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5329\n\n```\nCWE-399 long video_ioctl2 ( struct file * file , unsigned int cmd , unsigned long arg ) { <S2SV_StartBug> char sbuf [ 128 ] ; <S2SV_EndBug> void * mbuf = NULL ; void * parg = ( void * ) arg ; long err = - EINVAL ; bool has_array_args ; size_t array_size = 0 ; void __user * user_ptr = NULL ; void * * kernel_ptr = NULL ; if ( _IOC_DIR ( cmd ) != _IOC_NONE ) { if ( _IOC_SIZE ( cmd ) <= sizeof ( sbuf ) ) { parg = sbuf ; } else { mbuf = kmalloc ( _IOC_SIZE ( cmd ) , GFP_KERNEL ) ; if ( NULL == mbuf ) return - ENOMEM ; parg = mbuf ; } err = - EFAULT ; if ( _IOC_DIR ( cmd ) & _IOC_WRITE ) { unsigned long n = cmd_input_size ( cmd ) ; if ( copy_from_user ( parg , ( void __user * ) arg , n ) ) goto out ; if ( n < _IOC_SIZE ( cmd ) ) memset ( ( u8 * ) parg + n , 0 , _IOC_SIZE ( cmd ) - n ) ; } else { memset ( parg , 0 , _IOC_SIZE ( cmd ) ) ; } } err = check_array_args ( cmd , parg , & array_size , & user_ptr , & kernel_ptr ) ; if ( err < 0 ) goto out ; has_array_args = err ; if ( has_array_args ) { mbuf = kmalloc ( array_size , GFP_KERNEL ) ; err = - ENOMEM ; if ( NULL == mbuf ) goto out_array_args ; err = - EFAULT ; if ( copy_from_user ( mbuf , user_ptr , array_size ) ) goto out_array_args ; * kernel_ptr = mbuf ; } <S2SV_StartBug> err = __video_do_ioctl ( file , cmd , parg ) ; <S2SV_EndBug> if ( err == - ENOIOCTLCMD ) err = - EINVAL ; if ( has_array_args ) { * kernel_ptr = user_ptr ; if ( copy_to_user ( user_ptr , mbuf , array_size ) ) err = - EFAULT ; goto out_array_args ; } if ( err < 0 ) goto out ; out_array_args : switch ( _IOC_DIR ( cmd ) ) { case _IOC_READ : case ( _IOC_WRITE | _IOC_READ ) : if ( copy_to_user ( ( void __user * ) arg , parg , _IOC_SIZE ( cmd ) ) ) err = - EFAULT ; break ; } out : kfree ( mbuf ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg ) { return video_usercopy <S2SV_ModEnd> ( file , <S2SV_ModStart> , cmd , arg , __video_do_ioctl ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static struct tok_state * tok_new ( void ) { struct tok_state * tok = ( struct tok_state * ) PyMem_MALLOC ( sizeof ( struct tok_state ) ) ; if ( tok == NULL ) return NULL ; tok -> buf = tok -> cur = tok -> end = tok -> inp = tok -> start = NULL ; tok -> done = E_OK ; tok -> fp = NULL ; tok -> input = NULL ; tok -> tabsize = TABSIZE ; tok -> indent = 0 ; tok -> indstack [ 0 ] = 0 ; tok -> atbol = 1 ; tok -> pendin = 0 ; tok -> prompt = tok -> nextprompt = NULL ; tok -> lineno = 0 ; tok -> level = 0 ; tok -> altindstack [ 0 ] = 0 ; tok -> decoding_state = STATE_INIT ; tok -> decoding_erred = 0 ; tok -> read_coding_spec = 0 ; tok -> enc = NULL ; tok -> encoding = NULL ; tok -> cont_line = 0 ; # ifndef PGEN tok -> filename = NULL ; tok -> decoding_readline = NULL ; tok -> decoding_buffer = NULL ; # endif <S2SV_StartBug> return tok ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif tok -> type_comments = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17856\n\n```\nCWE-119 static int check_ptr_alignment ( struct bpf_verifier_env * env , const struct bpf_reg_state * reg , int off , int size ) { bool strict = env -> strict_alignment ; const char * pointer_desc = \"\" ; switch ( reg -> type ) { case PTR_TO_PACKET : case PTR_TO_PACKET_META : return check_pkt_ptr_alignment ( env , reg , off , size , strict ) ; case PTR_TO_MAP_VALUE : pointer_desc = \"value<S2SV_blank>\" ; break ; case PTR_TO_CTX : pointer_desc = \"context<S2SV_blank>\" ; break ; case PTR_TO_STACK : pointer_desc = \"stack<S2SV_blank>\" ; <S2SV_StartBug> break ; <S2SV_EndBug> default : break ; } return check_generic_ptr_alignment ( env , reg , pointer_desc , off , size , strict ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = \"stack<S2SV_blank>\" ; strict = true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void read_inter_mode_probs ( FRAME_CONTEXT * fc , vp9_reader * r ) { <S2SV_EndBug> int i , j ; for ( i = 0 ; i < INTER_MODE_CONTEXTS ; ++ i ) for ( j = 0 ; j < INTER_MODES - 1 ; ++ j ) vp9_diff_update_prob ( r , & fc -> inter_mode_probs [ i ] [ j ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * fc , vpx_reader <S2SV_ModEnd> * r )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3138\n\n```\nCWE-20 static int wb_id ( netdissect_options * ndo , const struct pkt_id * id , u_int len ) { int i ; const char * cp ; const struct id_off * io ; char c ; int nid ; ND_PRINT ( ( ndo , \"<S2SV_blank>wb-id:\" ) ) ; if ( len < sizeof ( * id ) || ! ND_TTEST ( * id ) ) return ( - 1 ) ; len -= sizeof ( * id ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u/%s:%u<S2SV_blank>(max<S2SV_blank>%u/%s:%u)<S2SV_blank>\" , EXTRACT_32BITS ( & id -> pi_ps . slot ) , ipaddr_string ( ndo , & id -> pi_ps . page . p_sid ) , EXTRACT_32BITS ( & id -> pi_ps . page . p_uid ) , EXTRACT_32BITS ( & id -> pi_mslot ) , ipaddr_string ( ndo , & id -> pi_mpage . p_sid ) , EXTRACT_32BITS ( & id -> pi_mpage . p_uid ) ) ) ; nid = EXTRACT_16BITS ( & id -> pi_ps . nid ) ; len -= sizeof ( * io ) * nid ; io = ( struct id_off * ) ( id + 1 ) ; cp = ( char * ) ( io + nid ) ; <S2SV_StartBug> if ( ! ND_TTEST2 ( cp , len ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; fn_print ( ndo , ( u_char * ) cp , ( u_char * ) cp + len ) ; ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } c = '<' ; for ( i = 0 ; i < nid && ND_TTEST ( * io ) ; ++ io , ++ i ) { ND_PRINT ( ( ndo , \"%c%s:%u\" , c , ipaddr_string ( ndo , & io -> id ) , EXTRACT_32BITS ( & io -> off ) ) ) ; c = ',' ; } if ( i >= nid ) { ND_PRINT ( ( ndo , \">\" ) ) ; return ( 0 ) ; } return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> ND_TTEST2 ( cp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void get_sb_partition_size_range ( VP9_COMP * cpi , MODE_INFO * * mi_8x8 , <S2SV_EndBug> BLOCK_SIZE * min_block_size , <S2SV_StartBug> BLOCK_SIZE * max_block_size ) { <S2SV_EndBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; int sb_width_in_blocks = MI_BLOCK_SIZE ; int sb_height_in_blocks = MI_BLOCK_SIZE ; int i , j ; int index = 0 ; for ( i = 0 ; i < sb_height_in_blocks ; ++ i ) { for ( j = 0 ; j < sb_width_in_blocks ; ++ j ) { MODE_INFO * mi = mi_8x8 [ index + j ] ; BLOCK_SIZE sb_type = mi ? mi -> mbmi . sb_type : 0 ; <S2SV_StartBug> * min_block_size = MIN ( * min_block_size , sb_type ) ; <S2SV_EndBug> * max_block_size = MAX ( * max_block_size , sb_type ) ; } index += xd -> mi_stride ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void get_sb_partition_size_range ( MACROBLOCKD * xd <S2SV_ModEnd> , MODE_INFO * <S2SV_ModStart> BLOCK_SIZE * max_block_size , int bs_hist [ BLOCK_SIZES ] ) { <S2SV_ModEnd> int sb_width_in_blocks = <S2SV_ModStart> : 0 ; bs_hist [ sb_type ] ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8970\n\n```\nCWE-476 static int skcipher_accept_parent ( void * private , struct sock * sk ) { struct skcipher_ctx * ctx ; struct alg_sock * ask = alg_sk ( sk ) ; <S2SV_StartBug> unsigned int len = sizeof ( * ctx ) + crypto_skcipher_reqsize ( private ) ; <S2SV_EndBug> ctx = sock_kmalloc ( sk , len , GFP_KERNEL ) ; if ( ! ctx ) return - ENOMEM ; <S2SV_StartBug> ctx -> iv = sock_kmalloc ( sk , crypto_skcipher_ivsize ( private ) , <S2SV_EndBug> GFP_KERNEL ) ; if ( ! ctx -> iv ) { sock_kfree_s ( sk , ctx , len ) ; return - ENOMEM ; } <S2SV_StartBug> memset ( ctx -> iv , 0 , crypto_skcipher_ivsize ( private ) ) ; <S2SV_EndBug> INIT_LIST_HEAD ( & ctx -> tsgl ) ; ctx -> len = len ; ctx -> used = 0 ; ctx -> more = 0 ; ctx -> merge = 0 ; ctx -> enc = 0 ; atomic_set ( & ctx -> inflight , 0 ) ; af_alg_init_completion ( & ctx -> completion ) ; ask -> private = ctx ; <S2SV_StartBug> skcipher_request_set_tfm ( & ctx -> req , private ) ; <S2SV_EndBug> skcipher_request_set_callback ( & ctx -> req , CRYPTO_TFM_REQ_MAY_BACKLOG , af_alg_complete , & ctx -> completion ) ; sk -> sk_destruct = skcipher_sock_destruct ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk ) ; struct skcipher_tfm * tfm = private ; struct crypto_skcipher * skcipher = tfm -> skcipher ; <S2SV_ModStart> + crypto_skcipher_reqsize ( skcipher ) ; if ( ! tfm -> has_key ) return - ENOKEY <S2SV_ModEnd> ; ctx = <S2SV_ModStart> , crypto_skcipher_ivsize ( skcipher <S2SV_ModEnd> ) , GFP_KERNEL <S2SV_ModStart> , crypto_skcipher_ivsize ( skcipher ) ) ; INIT_LIST_HEAD ( & ctx -> tsgl ) ; ctx -> len = len ; ctx -> used = 0 ; ctx -> more = 0 ; ctx -> merge = 0 ; ctx -> enc = 0 ; atomic_set ( & ctx -> inflight , 0 ) ; af_alg_init_completion ( & ctx -> completion ) ; ask -> private <S2SV_ModEnd> = ctx ; <S2SV_ModStart> -> req , skcipher <S2SV_ModEnd> ) ; skcipher_request_set_callback\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 int udpv6_sendmsg ( struct sock * sk , struct msghdr * msg , size_t len ) { struct ipv6_txoptions opt_space ; struct udp_sock * up = udp_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_in6 * , sin6 , msg -> msg_name ) ; struct in6_addr * daddr , * final_p , final ; <S2SV_StartBug> struct ipv6_txoptions * opt = NULL ; <S2SV_EndBug> struct ip6_flowlabel * flowlabel = NULL ; struct flowi6 fl6 ; struct dst_entry * dst ; int addr_len = msg -> msg_namelen ; int ulen = len ; int hlimit = - 1 ; int tclass = - 1 ; int dontfrag = - 1 ; int corkreq = up -> corkflag || msg -> msg_flags & MSG_MORE ; int err ; int connected = 0 ; int is_udplite = IS_UDPLITE ( sk ) ; int ( * getfrag ) ( void * , char * , int , int , int , struct sk_buff * ) ; if ( sin6 ) { if ( addr_len < offsetof ( struct sockaddr , sa_data ) ) return - EINVAL ; switch ( sin6 -> sin6_family ) { case AF_INET6 : if ( addr_len < SIN6_LEN_RFC2133 ) return - EINVAL ; daddr = & sin6 -> sin6_addr ; break ; case AF_INET : goto do_udp_sendmsg ; case AF_UNSPEC : msg -> msg_name = sin6 = NULL ; msg -> msg_namelen = addr_len = 0 ; daddr = NULL ; break ; default : return - EINVAL ; } } else if ( ! up -> pending ) { if ( sk -> sk_state != TCP_ESTABLISHED ) return - EDESTADDRREQ ; daddr = & sk -> sk_v6_daddr ; } else daddr = NULL ; if ( daddr ) { if ( ipv6_addr_v4mapped ( daddr ) ) { struct sockaddr_in sin ; sin . sin_family = AF_INET ; sin . sin_port = sin6 ? sin6 -> sin6_port : inet -> inet_dport ; sin . sin_addr . s_addr = daddr -> s6_addr32 [ 3 ] ; msg -> msg_name = & sin ; msg -> msg_namelen = sizeof ( sin ) ; do_udp_sendmsg : if ( __ipv6_only_sock ( sk ) ) return - ENETUNREACH ; return udp_sendmsg ( sk , msg , len ) ; } } if ( up -> pending == AF_INET ) return udp_sendmsg ( sk , msg , len ) ; if ( len > INT_MAX - sizeof ( struct udphdr ) ) return - EMSGSIZE ; getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag ; if ( up -> pending ) { lock_sock ( sk ) ; if ( likely ( up -> pending ) ) { if ( unlikely ( up -> pending != AF_INET6 ) ) { release_sock ( sk ) ; return - EAFNOSUPPORT ; } dst = NULL ; goto do_append_data ; } release_sock ( sk ) ; } ulen += sizeof ( struct udphdr ) ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; if ( sin6 ) { if ( sin6 -> sin6_port == 0 ) return - EINVAL ; fl6 . fl6_dport = sin6 -> sin6_port ; daddr = & sin6 -> sin6_addr ; if ( np -> sndflow ) { fl6 . flowlabel = sin6 -> sin6_flowinfo & IPV6_FLOWINFO_MASK ; if ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) { flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( ! flowlabel ) return - EINVAL ; } } if ( sk -> sk_state == TCP_ESTABLISHED && ipv6_addr_equal ( daddr , & sk -> sk_v6_daddr ) ) daddr = & sk -> sk_v6_daddr ; if ( addr_len >= sizeof ( struct sockaddr_in6 ) && sin6 -> sin6_scope_id && __ipv6_addr_needs_scope_id ( __ipv6_addr_type ( daddr ) ) ) fl6 . flowi6_oif = sin6 -> sin6_scope_id ; } else { if ( sk -> sk_state != TCP_ESTABLISHED ) return - EDESTADDRREQ ; fl6 . fl6_dport = inet -> inet_dport ; daddr = & sk -> sk_v6_daddr ; fl6 . flowlabel = np -> flow_label ; connected = 1 ; } if ( ! fl6 . flowi6_oif ) fl6 . flowi6_oif = sk -> sk_bound_dev_if ; if ( ! fl6 . flowi6_oif ) fl6 . flowi6_oif = np -> sticky_pktinfo . ipi6_ifindex ; fl6 . flowi6_mark = sk -> sk_mark ; if ( msg -> msg_controllen ) { opt = & opt_space ; memset ( opt , 0 , sizeof ( struct ipv6_txoptions ) ) ; opt -> tot_len = sizeof ( * opt ) ; err = ip6_datagram_send_ctl ( sock_net ( sk ) , sk , msg , & fl6 , opt , & hlimit , & tclass , & dontfrag ) ; if ( err < 0 ) { fl6_sock_release ( flowlabel ) ; return err ; } if ( ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) && ! flowlabel ) { flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( ! flowlabel ) return - EINVAL ; } if ( ! ( opt -> opt_nflen | opt -> opt_flen ) ) opt = NULL ; connected = 0 ; } <S2SV_StartBug> if ( ! opt ) <S2SV_EndBug> opt = np -> opt ; if ( flowlabel ) opt = fl6_merge_options ( & opt_space , flowlabel , opt ) ; opt = ipv6_fixup_options ( & opt_space , opt ) ; fl6 . flowi6_proto = sk -> sk_protocol ; if ( ! ipv6_addr_any ( daddr ) ) fl6 . daddr = * daddr ; else fl6 . daddr . s6_addr [ 15 ] = 0x1 ; if ( ipv6_addr_any ( & fl6 . saddr ) && ! ipv6_addr_any ( & np -> saddr ) ) fl6 . saddr = np -> saddr ; fl6 . fl6_sport = inet -> inet_sport ; final_p = fl6_update_dst ( & fl6 , opt , & final ) ; if ( final_p ) connected = 0 ; if ( ! fl6 . flowi6_oif && ipv6_addr_is_multicast ( & fl6 . daddr ) ) { fl6 . flowi6_oif = np -> mcast_oif ; connected = 0 ; } else if ( ! fl6 . flowi6_oif ) fl6 . flowi6_oif = np -> ucast_oif ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; dst = ip6_sk_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) { err = PTR_ERR ( dst ) ; dst = NULL ; goto out ; } if ( hlimit < 0 ) hlimit = ip6_sk_dst_hoplimit ( np , & fl6 , dst ) ; if ( tclass < 0 ) tclass = np -> tclass ; if ( msg -> msg_flags & MSG_CONFIRM ) goto do_confirm ; back_from_confirm : if ( ! corkreq ) { struct sk_buff * skb ; skb = ip6_make_skb ( sk , getfrag , msg , ulen , sizeof ( struct udphdr ) , hlimit , tclass , opt , & fl6 , ( struct rt6_info * ) dst , msg -> msg_flags , dontfrag ) ; err = PTR_ERR ( skb ) ; if ( ! IS_ERR_OR_NULL ( skb ) ) err = udp_v6_send_skb ( skb , & fl6 ) ; goto release_dst ; } lock_sock ( sk ) ; if ( unlikely ( up -> pending ) ) { release_sock ( sk ) ; net_dbg_ratelimited ( \"udp<S2SV_blank>cork<S2SV_blank>app<S2SV_blank>bug<S2SV_blank>2\\\\n\" ) ; err = - EINVAL ; goto out ; } up -> pending = AF_INET6 ; do_append_data : if ( dontfrag < 0 ) dontfrag = np -> dontfrag ; up -> len += ulen ; err = ip6_append_data ( sk , getfrag , msg , ulen , sizeof ( struct udphdr ) , hlimit , tclass , opt , & fl6 , ( struct rt6_info * ) dst , corkreq ? msg -> msg_flags | MSG_MORE : msg -> msg_flags , dontfrag ) ; if ( err ) udp_v6_flush_pending_frames ( sk ) ; else if ( ! corkreq ) err = udp_v6_push_pending_frames ( sk ) ; else if ( unlikely ( skb_queue_empty ( & sk -> sk_write_queue ) ) ) up -> pending = 0 ; if ( err > 0 ) err = np -> recverr ? net_xmit_errno ( err ) : 0 ; release_sock ( sk ) ; release_dst : if ( dst ) { if ( connected ) { ip6_dst_store ( sk , dst , ipv6_addr_equal ( & fl6 . daddr , & sk -> sk_v6_daddr ) ? & sk -> sk_v6_daddr : NULL , # ifdef CONFIG_IPV6_SUBTREES ipv6_addr_equal ( & fl6 . saddr , & np -> saddr ) ? & np -> saddr : # endif NULL ) ; } else { dst_release ( dst ) ; } dst = NULL ; } out : dst_release ( dst ) ; <S2SV_StartBug> fl6_sock_release ( flowlabel ) ; <S2SV_EndBug> if ( ! err ) return len ; if ( err == - ENOBUFS || test_bit ( SOCK_NOSPACE , & sk -> sk_socket -> flags ) ) { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_SNDBUFERRORS , is_udplite ) ; } return err ; do_confirm : dst_confirm ( dst ) ; if ( ! ( msg -> msg_flags & MSG_PROBE ) || len ) goto back_from_confirm ; err = 0 ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ipv6_txoptions * opt = NULL ; struct ipv6_txoptions * opt_to_free <S2SV_ModStart> ! opt ) { opt = txopt_get ( np ) ; opt_to_free = opt ; } <S2SV_ModEnd> if ( flowlabel <S2SV_ModStart> fl6_sock_release ( flowlabel ) ; txopt_put ( opt_to_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6327\n\n```\nCWE-476 static void srpt_handle_tsk_mgmt ( struct srpt_rdma_ch * ch , struct srpt_recv_ioctx * recv_ioctx , struct srpt_send_ioctx * send_ioctx ) { struct srp_tsk_mgmt * srp_tsk ; struct se_cmd * cmd ; struct se_session * sess = ch -> sess ; uint64_t unpacked_lun ; <S2SV_StartBug> uint32_t tag = 0 ; <S2SV_EndBug> int tcm_tmr ; int rc ; BUG_ON ( ! send_ioctx ) ; srp_tsk = recv_ioctx -> ioctx . buf ; cmd = & send_ioctx -> cmd ; pr_debug ( \"recv<S2SV_blank>tsk_mgmt<S2SV_blank>fn<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>task_tag<S2SV_blank>%lld<S2SV_blank>and<S2SV_blank>cmd<S2SV_blank>tag<S2SV_blank>%lld\" \"<S2SV_blank>cm_id<S2SV_blank>%p<S2SV_blank>sess<S2SV_blank>%p\\\\n\" , srp_tsk -> tsk_mgmt_func , srp_tsk -> task_tag , srp_tsk -> tag , ch -> cm_id , ch -> sess ) ; srpt_set_cmd_state ( send_ioctx , SRPT_STATE_MGMT ) ; send_ioctx -> cmd . tag = srp_tsk -> tag ; tcm_tmr = srp_tmr_to_tcm ( srp_tsk -> tsk_mgmt_func ) ; <S2SV_StartBug> if ( tcm_tmr < 0 ) { <S2SV_EndBug> send_ioctx -> cmd . se_tmr_req -> response = TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED ; goto fail ; } unpacked_lun = srpt_unpack_lun ( ( uint8_t * ) & srp_tsk -> lun , sizeof ( srp_tsk -> lun ) ) ; if ( srp_tsk -> tsk_mgmt_func == SRP_TSK_ABORT_TASK ) { <S2SV_StartBug> rc = srpt_rx_mgmt_fn_tag ( send_ioctx , srp_tsk -> task_tag ) ; <S2SV_EndBug> if ( rc < 0 ) { send_ioctx -> cmd . se_tmr_req -> response = TMR_TASK_DOES_NOT_EXIST ; goto fail ; } tag = srp_tsk -> task_tag ; } rc = target_submit_tmr ( & send_ioctx -> cmd , sess , NULL , unpacked_lun , srp_tsk , tcm_tmr , GFP_KERNEL , tag , TARGET_SCF_ACK_KREF ) ; if ( rc != 0 ) { send_ioctx -> cmd . se_tmr_req -> response = TMR_FUNCTION_REJECTED ; goto fail ; } return ; fail : transport_send_check_condition_and_sense ( cmd , 0 , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint64_t unpacked_lun ; <S2SV_ModEnd> int tcm_tmr ; <S2SV_ModStart> tsk_mgmt_func ) ; unpacked_lun = srpt_unpack_lun ( ( uint8_t * ) & srp_tsk -> lun , sizeof ( srp_tsk -> lun ) ) ; rc = target_submit_tmr ( & send_ioctx -> cmd , sess , NULL , unpacked_lun , srp_tsk , tcm_tmr , GFP_KERNEL <S2SV_ModEnd> , srp_tsk -> <S2SV_ModStart> srp_tsk -> task_tag <S2SV_ModEnd> , TARGET_SCF_ACK_KREF )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6187\n\n```\nCWE-264 static int apparmor_setprocattr ( struct task_struct * task , char * name , void * value , size_t size ) { struct common_audit_data sa ; struct apparmor_audit_data aad = { 0 , } ; <S2SV_StartBug> char * command , * args = value ; <S2SV_EndBug> size_t arg_size ; int error ; if ( size == 0 ) <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> if ( args [ size - 1 ] != '\\\\0' ) { <S2SV_StartBug> if ( size == PAGE_SIZE ) <S2SV_EndBug> <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> <S2SV_StartBug> args [ size ] = '\\\\0' ; <S2SV_EndBug> } if ( current != task ) return - EACCES ; args = value ; args = strim ( args ) ; command = strsep ( & args , \"<S2SV_blank>\" ) ; if ( ! args ) return - EINVAL ; args = skip_spaces ( args ) ; if ( ! * args ) return - EINVAL ; arg_size = size - ( args - ( char * ) value ) ; <S2SV_StartBug> if ( strcmp ( name , \"current\" ) == 0 ) { <S2SV_EndBug> if ( strcmp ( command , \"changehat\" ) == 0 ) { error = aa_setprocattr_changehat ( args , arg_size , ! AA_DO_TEST ) ; <S2SV_StartBug> } else if ( strcmp ( command , \"permhat\" ) == 0 ) { <S2SV_EndBug> error = aa_setprocattr_changehat ( args , arg_size , AA_DO_TEST ) ; } else if ( strcmp ( command , \"changeprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , ! AA_DO_TEST ) ; } else if ( strcmp ( command , \"permprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , AA_DO_TEST ) ; } else goto fail ; <S2SV_StartBug> } else if ( strcmp ( name , \"exec\" ) == 0 ) { <S2SV_EndBug> if ( strcmp ( command , \"exec\" ) == 0 ) error = aa_setprocattr_changeprofile ( args , AA_ONEXEC , ! AA_DO_TEST ) ; else goto fail ; <S2SV_StartBug> } else <S2SV_EndBug> return - EINVAL ; if ( ! error ) error = size ; return error ; fail : sa . type = LSM_AUDIT_DATA_NONE ; sa . aad = & aad ; aad . profile = aa_current_profile ( ) ; aad . op = OP_SETPROCATTR ; aad . info = name ; <S2SV_StartBug> aad . error = - EINVAL ; <S2SV_EndBug> aa_audit_msg ( AUDIT_APPARMOR_DENIED , & sa , NULL ) ; <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> command , * largs = NULL , * <S2SV_ModStart> return - EINVAL ; if ( current != task ) return - EACCES <S2SV_ModStart> '\\\\0' ) { largs = args = kmalloc ( size + 1 , GFP_KERNEL ) ; if ( ! args <S2SV_ModEnd> ) return - <S2SV_ModStart> ) return - ENOMEM ; memcpy ( args , value , size ) ; args [ size ] = '\\\\0' ; } error = - <S2SV_ModStart> EINVAL ; args = strim ( args ) ; command = strsep ( & args , \"<S2SV_blank>\" ) ; if ( ! args ) goto out ; args = skip_spaces ( args ) ; if ( ! * args ) goto out ; arg_size = size - ( args - ( char * ) value ) ; if ( strcmp ( name , \"current\" ) == 0 ) { if ( strcmp ( command , \"changehat\" ) == 0 ) { error = aa_setprocattr_changehat ( args , arg_size , ! AA_DO_TEST ) ; } else if ( strcmp ( command , \"permhat\" ) == 0 ) { error = aa_setprocattr_changehat ( args , arg_size , AA_DO_TEST ) ; } else if ( strcmp ( command , \"changeprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , ! AA_DO_TEST ) ; } else if ( strcmp ( command , \"permprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , AA_DO_TEST ) ; } else goto fail ; } else <S2SV_ModEnd> if ( strcmp <S2SV_ModStart> ( name , \"exec\" ) == 0 ) { if ( strcmp ( command , \"exec\" ) == 0 ) error = aa_setprocattr_changeprofile ( args , AA_ONEXEC <S2SV_ModEnd> , ! AA_DO_TEST <S2SV_ModStart> AA_DO_TEST ) ; <S2SV_ModEnd> else goto fail <S2SV_ModStart> ; } else <S2SV_ModEnd> goto fail ; <S2SV_ModStart> goto fail ; if ( ! error ) error = size ; out : kfree ( largs ) <S2SV_ModEnd> ; return error <S2SV_ModStart> . error = error = <S2SV_ModStart> NULL ) ; goto out <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0728\n\n```\nCWE-000 long join_session_keyring ( const char * name ) { const struct cred * old ; struct cred * new ; struct key * keyring ; long ret , serial ; new = prepare_creds ( ) ; if ( ! new ) return - ENOMEM ; old = current_cred ( ) ; if ( ! name ) { ret = install_session_keyring_to_cred ( new , NULL ) ; if ( ret < 0 ) goto error ; serial = new -> session_keyring -> serial ; ret = commit_creds ( new ) ; if ( ret == 0 ) ret = serial ; goto okay ; } mutex_lock ( & key_session_mutex ) ; keyring = find_keyring_by_name ( name , false ) ; if ( PTR_ERR ( keyring ) == - ENOKEY ) { keyring = keyring_alloc ( name , old -> uid , old -> gid , old , KEY_POS_ALL | KEY_USR_VIEW | KEY_USR_READ | KEY_USR_LINK , KEY_ALLOC_IN_QUOTA , NULL ) ; if ( IS_ERR ( keyring ) ) { ret = PTR_ERR ( keyring ) ; goto error2 ; } } else if ( IS_ERR ( keyring ) ) { ret = PTR_ERR ( keyring ) ; goto error2 ; } else if ( keyring == new -> session_keyring ) { <S2SV_StartBug> ret = 0 ; <S2SV_EndBug> goto error2 ; } ret = install_session_keyring_to_cred ( new , keyring ) ; if ( ret < 0 ) goto error2 ; commit_creds ( new ) ; mutex_unlock ( & key_session_mutex ) ; ret = keyring -> serial ; key_put ( keyring ) ; okay : return ret ; error2 : mutex_unlock ( & key_session_mutex ) ; error : abort_creds ( new ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> session_keyring ) { key_put ( keyring ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14164\n\n```\nCWE-119 static OPJ_BOOL opj_j2k_write_all_tile_parts ( opj_j2k_t * p_j2k , OPJ_BYTE * p_data , OPJ_UINT32 * p_data_written , OPJ_UINT32 p_total_data_size , opj_stream_private_t * p_stream , struct opj_event_mgr * p_manager ) { OPJ_UINT32 tilepartno = 0 ; OPJ_UINT32 l_nb_bytes_written = 0 ; OPJ_UINT32 l_current_nb_bytes_written ; OPJ_UINT32 l_part_tile_size ; OPJ_UINT32 tot_num_tp ; OPJ_UINT32 pino ; OPJ_BYTE * l_begin_data ; opj_tcp_t * l_tcp = 00 ; opj_tcd_t * l_tcd = 00 ; opj_cp_t * l_cp = 00 ; l_tcd = p_j2k -> m_tcd ; l_cp = & ( p_j2k -> m_cp ) ; l_tcp = l_cp -> tcps + p_j2k -> m_current_tile_number ; tot_num_tp = opj_j2k_get_num_tp ( l_cp , 0 , p_j2k -> m_current_tile_number ) ; ++ p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number ; for ( tilepartno = 1 ; tilepartno < tot_num_tp ; ++ tilepartno ) { p_j2k -> m_specific_param . m_encoder . m_current_poc_tile_part_number = tilepartno ; l_current_nb_bytes_written = 0 ; l_part_tile_size = 0 ; l_begin_data = p_data ; <S2SV_StartBug> if ( ! opj_j2k_write_sot ( p_j2k , p_data , & l_current_nb_bytes_written , p_stream , <S2SV_EndBug> p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_part_tile_size += l_current_nb_bytes_written ; l_current_nb_bytes_written = 0 ; if ( ! opj_j2k_write_sod ( p_j2k , l_tcd , p_data , & l_current_nb_bytes_written , p_total_data_size , p_stream , p_manager ) ) { return OPJ_FALSE ; } p_data += l_current_nb_bytes_written ; l_nb_bytes_written += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_part_tile_size += l_current_nb_bytes_written ; opj_write_bytes ( l_begin_data + 6 , l_part_tile_size , 4 ) ; if ( OPJ_IS_CINEMA ( l_cp -> rsiz ) ) { opj_j2k_update_tlm ( p_j2k , l_part_tile_size ) ; } ++ p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number ; } for ( pino = 1 ; pino <= l_tcp -> numpocs ; ++ pino ) { l_tcd -> cur_pino = pino ; tot_num_tp = opj_j2k_get_num_tp ( l_cp , pino , p_j2k -> m_current_tile_number ) ; for ( tilepartno = 0 ; tilepartno < tot_num_tp ; ++ tilepartno ) { p_j2k -> m_specific_param . m_encoder . m_current_poc_tile_part_number = tilepartno ; l_current_nb_bytes_written = 0 ; l_part_tile_size = 0 ; l_begin_data = p_data ; <S2SV_StartBug> if ( ! opj_j2k_write_sot ( p_j2k , p_data , & l_current_nb_bytes_written , p_stream , <S2SV_EndBug> p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_part_tile_size += l_current_nb_bytes_written ; l_current_nb_bytes_written = 0 ; if ( ! opj_j2k_write_sod ( p_j2k , l_tcd , p_data , & l_current_nb_bytes_written , p_total_data_size , p_stream , p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_part_tile_size += l_current_nb_bytes_written ; opj_write_bytes ( l_begin_data + 6 , l_part_tile_size , 4 ) ; if ( OPJ_IS_CINEMA ( l_cp -> rsiz ) ) { opj_j2k_update_tlm ( p_j2k , l_part_tile_size ) ; } ++ p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number ; } } * p_data_written = l_nb_bytes_written ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , p_data , p_total_data_size , <S2SV_ModStart> , p_data , p_total_data_size ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void * btif_hl_select_thread ( void * arg ) { fd_set org_set , curr_set ; int r , max_curr_s , max_org_s ; UNUSED ( arg ) ; BTIF_TRACE_DEBUG ( \"entered<S2SV_blank>btif_hl_select_thread\" ) ; FD_ZERO ( & org_set ) ; max_org_s = btif_hl_select_wakeup_init ( & org_set ) ; BTIF_TRACE_DEBUG ( \"max_s=%d<S2SV_blank>\" , max_org_s ) ; for ( ; ; ) { r = 0 ; BTIF_TRACE_DEBUG ( \"set<S2SV_blank>curr_set<S2SV_blank>=<S2SV_blank>org_set<S2SV_blank>\" ) ; curr_set = org_set ; max_curr_s = max_org_s ; <S2SV_StartBug> int ret = select ( ( max_curr_s + 1 ) , & curr_set , NULL , NULL , NULL ) ; <S2SV_EndBug> BTIF_TRACE_DEBUG ( \"select<S2SV_blank>unblocked<S2SV_blank>ret=%d\" , ret ) ; if ( ret == - 1 ) { BTIF_TRACE_DEBUG ( \"select()<S2SV_blank>ret<S2SV_blank>-1,<S2SV_blank>exit<S2SV_blank>the<S2SV_blank>thread\" ) ; btif_hl_thread_cleanup ( ) ; select_thread_id = - 1 ; return 0 ; } else if ( ret ) { BTIF_TRACE_DEBUG ( \"btif_hl_select_wake_signaled,<S2SV_blank>signal<S2SV_blank>ret=%d\" , ret ) ; if ( btif_hl_select_wake_signaled ( & curr_set ) ) { r = btif_hl_select_wake_reset ( ) ; BTIF_TRACE_DEBUG ( \"btif_hl_select_wake_signaled,<S2SV_blank>signal:%d\" , r ) ; if ( r == btif_hl_signal_select_wakeup || r == btif_hl_signal_select_close_connected ) { btif_hl_select_wakeup_callback ( & org_set , r ) ; } else if ( r == btif_hl_signal_select_exit ) { btif_hl_thread_cleanup ( ) ; BTIF_TRACE_DEBUG ( \"Exit<S2SV_blank>hl_select_thread<S2SV_blank>for<S2SV_blank>btif_hl_signal_select_exit\" ) ; return 0 ; } } btif_hl_select_monitor_callback ( & curr_set , & org_set ) ; max_org_s = btif_hl_update_maxfd ( max_org_s ) ; } else BTIF_TRACE_DEBUG ( \"no<S2SV_blank>data,<S2SV_blank>select<S2SV_blank>ret:<S2SV_blank>%d\\\\n\" , ret ) ; } BTIF_TRACE_DEBUG ( \"leaving<S2SV_blank>hl_select_thread\" ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int ret = TEMP_FAILURE_RETRY ( <S2SV_ModStart> , NULL ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int ocfs2_set_acl ( handle_t * handle , struct inode * inode , struct buffer_head * di_bh , int type , struct posix_acl * acl , struct ocfs2_alloc_context * meta_ac , struct ocfs2_alloc_context * data_ac ) { int name_index ; void * value = NULL ; size_t size = 0 ; int ret ; if ( S_ISLNK ( inode -> i_mode ) ) return - EOPNOTSUPP ; switch ( type ) { case ACL_TYPE_ACCESS : name_index = OCFS2_XATTR_INDEX_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> umode_t mode = inode -> i_mode ; <S2SV_EndBug> <S2SV_StartBug> ret = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> if ( ret < 0 ) return ret ; if ( ret == 0 ) acl = NULL ; ret = ocfs2_acl_set_mode ( inode , di_bh , handle , mode ) ; if ( ret ) return ret ; } break ; case ACL_TYPE_DEFAULT : name_index = OCFS2_XATTR_INDEX_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = ocfs2_acl_to_xattr ( acl , & size ) ; if ( IS_ERR ( value ) ) return ( int ) PTR_ERR ( value ) ; } if ( handle ) ret = ocfs2_xattr_set_handle ( handle , inode , di_bh , name_index , \"\" , value , size , 0 , meta_ac , data_ac ) ; else ret = ocfs2_xattr_set ( inode , name_index , \"\" , value , size , 0 ) ; kfree ( value ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { umode_t mode ; ret = posix_acl_update_mode ( inode <S2SV_ModEnd> , & mode <S2SV_ModStart> , & mode , & acl ) ; if ( ret ) return ret <S2SV_ModEnd> ; ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static sent_status_t send_data_to_app ( int fd , BT_HDR * p_buf ) { if ( p_buf -> len == 0 ) return SENT_ALL ; <S2SV_StartBug> ssize_t sent = send ( fd , p_buf -> data + p_buf -> offset , p_buf -> len , MSG_DONTWAIT ) ; <S2SV_EndBug> if ( sent == - 1 ) { if ( errno == EAGAIN || errno == EWOULDBLOCK || errno == EINTR ) return SENT_NONE ; LOG_ERROR ( \"%s<S2SV_blank>error<S2SV_blank>writing<S2SV_blank>RFCOMM<S2SV_blank>data<S2SV_blank>back<S2SV_blank>to<S2SV_blank>app:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; return SENT_FAILED ; } if ( sent == 0 ) return SENT_FAILED ; if ( sent == p_buf -> len ) return SENT_ALL ; p_buf -> offset += sent ; p_buf -> len -= sent ; return SENT_PARTIAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ssize_t sent = TEMP_FAILURE_RETRY ( <S2SV_ModStart> len , MSG_DONTWAIT )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-36279\n\n```\nCWE-125 l_ok pixFillMapHoles ( PIX * pix , l_int32 nx , l_int32 ny , l_int32 filltype ) { l_int32 w , h , y , nmiss , goodcol , i , j , found , ival , valtest ; l_uint32 val , lastval ; <S2SV_StartBug> NUMA * na ; <S2SV_EndBug> PIX * pixt ; PROCNAME ( \"pixFillMapHoles\" ) ; if ( ! pix || pixGetDepth ( pix ) != 8 ) return ERROR_INT ( \"pix<S2SV_blank>not<S2SV_blank>defined<S2SV_blank>or<S2SV_blank>not<S2SV_blank>8<S2SV_blank>bpp\" , procName , 1 ) ; if ( pixGetColormap ( pix ) ) return ERROR_INT ( \"pix<S2SV_blank>is<S2SV_blank>colormapped\" , procName , 1 ) ; pixGetDimensions ( pix , & w , & h , NULL ) ; na = numaCreate ( 0 ) ; nmiss = 0 ; valtest = ( filltype == L_FILL_WHITE ) ? 255 : 0 ; for ( j = 0 ; j < nx ; j ++ ) { found = FALSE ; for ( i = 0 ; i < ny ; i ++ ) { pixGetPixel ( pix , j , i , & val ) ; if ( val != valtest ) { y = i ; found = TRUE ; break ; } } if ( found == FALSE ) { numaAddNumber ( na , 0 ) ; nmiss ++ ; } else { numaAddNumber ( na , 1 ) ; for ( i = y - 1 ; i >= 0 ; i -- ) pixSetPixel ( pix , j , i , val ) ; pixGetPixel ( pix , j , 0 , & lastval ) ; for ( i = 1 ; i < h ; i ++ ) { pixGetPixel ( pix , j , i , & val ) ; if ( val == valtest ) pixSetPixel ( pix , j , i , lastval ) ; else lastval = val ; } } } numaAddNumber ( na , 0 ) ; if ( nmiss == nx ) { numaDestroy ( & na ) ; L_WARNING ( \"no<S2SV_blank>bg<S2SV_blank>found;<S2SV_blank>no<S2SV_blank>data<S2SV_blank>in<S2SV_blank>any<S2SV_blank>column\\\\n\" , procName ) ; return 1 ; } if ( nmiss > 0 ) { <S2SV_StartBug> pixt = pixCopy ( NULL , pix ) ; <S2SV_EndBug> goodcol = 0 ; for ( j = 0 ; j < w ; j ++ ) { numaGetIValue ( na , j , & ival ) ; if ( ival == 1 ) { goodcol = j ; break ; } } if ( goodcol > 0 ) { <S2SV_StartBug> for ( j = goodcol - 1 ; j >= 0 ; j -- ) { <S2SV_EndBug> <S2SV_StartBug> pixRasterop ( pix , j , 0 , 1 , h , PIX_SRC , pixt , j + 1 , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> pixRasterop ( pixt , j , 0 , 1 , h , PIX_SRC , pix , j , 0 ) ; <S2SV_EndBug> } } for ( j = goodcol + 1 ; j < w ; j ++ ) { numaGetIValue ( na , j , & ival ) ; if ( ival == 0 ) { <S2SV_StartBug> pixRasterop ( pix , j , 0 , 1 , h , PIX_SRC , pixt , j - 1 , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> pixRasterop ( pixt , j , 0 , 1 , h , PIX_SRC , pix , j , 0 ) ; <S2SV_EndBug> } } pixDestroy ( & pixt ) ; } if ( w > nx ) { for ( i = 0 ; i < h ; i ++ ) { pixGetPixel ( pix , w - 2 , i , & val ) ; pixSetPixel ( pix , w - 1 , i , val ) ; } } numaDestroy ( & na ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NUMA * na <S2SV_ModEnd> ; PROCNAME ( <S2SV_ModStart> 0 ) { <S2SV_ModEnd> goodcol = 0 <S2SV_ModStart> j -- ) <S2SV_ModEnd> pixRasterop ( pix <S2SV_ModStart> , PIX_SRC , pix <S2SV_ModEnd> , j + <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> } for ( <S2SV_ModStart> , PIX_SRC , pix <S2SV_ModEnd> , j - <S2SV_ModStart> 0 ) ; } } <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8633\n\n```\nCWE-119 static void fwnet_receive_broadcast ( struct fw_iso_context * context , u32 cycle , size_t header_length , void * header , void * data ) { struct fwnet_device * dev ; struct fw_iso_packet packet ; __be16 * hdr_ptr ; __be32 * buf_ptr ; int retval ; u32 length ; <S2SV_StartBug> u16 source_node_id ; <S2SV_EndBug> u32 specifier_id ; u32 ver ; unsigned long offset ; unsigned long flags ; dev = data ; hdr_ptr = header ; length = be16_to_cpup ( hdr_ptr ) ; spin_lock_irqsave ( & dev -> lock , flags ) ; offset = dev -> rcv_buffer_size * dev -> broadcast_rcv_next_ptr ; buf_ptr = dev -> broadcast_rcv_buffer_ptrs [ dev -> broadcast_rcv_next_ptr ++ ] ; if ( dev -> broadcast_rcv_next_ptr == dev -> num_broadcast_rcv_ptrs ) dev -> broadcast_rcv_next_ptr = 0 ; spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_StartBug> specifier_id = ( be32_to_cpu ( buf_ptr [ 0 ] ) & 0xffff ) << 8 <S2SV_EndBug> | ( be32_to_cpu ( buf_ptr [ 1 ] ) & 0xff000000 ) >> 24 ; ver = be32_to_cpu ( buf_ptr [ 1 ] ) & 0xffffff ; source_node_id = be32_to_cpu ( buf_ptr [ 0 ] ) >> 16 ; if ( specifier_id == IANA_SPECIFIER_ID && <S2SV_StartBug> ( ver == RFC2734_SW_VERSION <S2SV_EndBug> # if IS_ENABLED ( CONFIG_IPV6 ) <S2SV_StartBug> || ver == RFC3146_SW_VERSION <S2SV_EndBug> # endif <S2SV_StartBug> ) ) { <S2SV_EndBug> buf_ptr += 2 ; length -= IEEE1394_GASP_HDR_SIZE ; fwnet_incoming_packet ( dev , buf_ptr , length , source_node_id , context -> card -> generation , true ) ; <S2SV_StartBug> } <S2SV_EndBug> packet . payload_length = dev -> rcv_buffer_size ; packet . interrupt = 1 ; packet . skip = 0 ; packet . tag = 3 ; packet . sy = 0 ; packet . header_length = IEEE1394_GASP_HDR_SIZE ; spin_lock_irqsave ( & dev -> lock , flags ) ; retval = fw_iso_context_queue ( dev -> broadcast_rcv_context , & packet , & dev -> broadcast_rcv_buffer , offset ) ; spin_unlock_irqrestore ( & dev -> lock , flags ) ; if ( retval >= 0 ) fw_iso_context_queue_flush ( dev -> broadcast_rcv_context ) ; else dev_err ( & dev -> netdev -> dev , \"requeue<S2SV_blank>failed\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u32 length ; <S2SV_ModEnd> unsigned long offset <S2SV_ModStart> flags ) ; if ( length > IEEE1394_GASP_HDR_SIZE && gasp_specifier_id ( buf_ptr ) <S2SV_ModEnd> == IANA_SPECIFIER_ID && <S2SV_ModStart> IANA_SPECIFIER_ID && ( gasp_version ( buf_ptr ) <S2SV_ModEnd> == RFC2734_SW_VERSION # <S2SV_ModStart> CONFIG_IPV6 ) || gasp_version ( buf_ptr ) <S2SV_ModEnd> == RFC3146_SW_VERSION # <S2SV_ModStart> endif ) ) fwnet_incoming_packet ( dev , buf_ptr + 2 , length - IEEE1394_GASP_HDR_SIZE , gasp_source_id ( buf_ptr ) <S2SV_ModEnd> , context -> <S2SV_ModStart> true ) ; <S2SV_ModEnd> packet . payload_length\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6432\n\n```\nCWE-000 int ping_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * isk = inet_sk ( sk ) ; int family = sk -> sk_family ; struct sk_buff * skb ; int copied , err ; pr_debug ( \"ping_recvmsg(sk=%p,sk->num=%u)\\\\n\" , isk , isk -> inet_num ) ; err = - EOPNOTSUPP ; if ( flags & MSG_OOB ) goto out ; if ( flags & MSG_ERRQUEUE ) { if ( family == AF_INET ) { return ip_recv_error ( sk , msg , len ) ; # if IS_ENABLED ( CONFIG_IPV6 ) } else if ( family == AF_INET6 ) { return pingv6_ops . ipv6_recv_error ( sk , msg , len ) ; # endif } } skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( copied > len ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_timestamp ( msg , sk , skb ) ; if ( family == AF_INET ) { struct sockaddr_in * sin = ( struct sockaddr_in * ) msg -> msg_name ; <S2SV_StartBug> sin -> sin_family = AF_INET ; <S2SV_EndBug> sin -> sin_port = 0 ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; * addr_len = sizeof ( * sin ) ; <S2SV_StartBug> if ( isk -> cmsg_flags ) <S2SV_EndBug> ip_cmsg_recv ( msg , skb ) ; # if IS_ENABLED ( CONFIG_IPV6 ) } else if ( family == AF_INET6 ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct ipv6hdr * ip6 = ipv6_hdr ( skb ) ; struct sockaddr_in6 * sin6 = ( struct sockaddr_in6 * ) msg -> msg_name ; <S2SV_StartBug> sin6 -> sin6_family = AF_INET6 ; <S2SV_EndBug> sin6 -> sin6_port = 0 ; sin6 -> sin6_addr = ip6 -> saddr ; sin6 -> sin6_flowinfo = 0 ; if ( np -> sndflow ) sin6 -> sin6_flowinfo = ip6_flowinfo ( ip6 ) ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , IP6CB ( skb ) -> iif ) ; <S2SV_StartBug> * addr_len = sizeof ( * sin6 ) ; <S2SV_EndBug> if ( inet6_sk ( sk ) -> rxopt . all ) pingv6_ops . ip6_datagram_recv_ctl ( sk , msg , skb ) ; # endif } else { BUG ( ) ; } err = copied ; done : skb_free_datagram ( sk , skb ) ; out : pr_debug ( \"ping_recvmsg<S2SV_blank>-><S2SV_blank>%d\\\\n\" , err ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> msg_name ; if ( sin ) { <S2SV_ModStart> sin ) ; } <S2SV_ModStart> -> msg_name ; if ( sin6 ) { <S2SV_ModStart> sin6 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 void hugetlb_unreserve_pages ( struct inode * inode , long offset , long freed ) { struct hstate * h = hstate_inode ( inode ) ; long chg = region_truncate ( & inode -> i_mapping -> private_list , offset ) ; <S2SV_StartBug> spin_lock ( & inode -> i_lock ) ; <S2SV_EndBug> inode -> i_blocks -= ( blocks_per_huge_page ( h ) * freed ) ; spin_unlock ( & inode -> i_lock ) ; <S2SV_StartBug> hugetlb_put_quota ( inode -> i_mapping , ( chg - freed ) ) ; <S2SV_EndBug> hugetlb_acct_memory ( h , - ( chg - freed ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> offset ) ; struct hugepage_subpool * spool = subpool_inode ( inode ) ; <S2SV_ModStart> i_lock ) ; hugepage_subpool_put_pages ( spool <S2SV_ModEnd> , ( chg\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4131\n\n```\nCWE-189 <S2SV_StartBug> static void <S2SV_EndBug> _copy_from_pages ( char * p , struct page * * pages , size_t pgbase , size_t len ) { struct page * * pgfrom ; char * vfrom ; size_t copy ; pgfrom = pages + ( pgbase >> PAGE_CACHE_SHIFT ) ; pgbase &= ~ PAGE_CACHE_MASK ; do { copy = PAGE_CACHE_SIZE - pgbase ; if ( copy > len ) copy = len ; vfrom = kmap_atomic ( * pgfrom , KM_USER0 ) ; memcpy ( p , vfrom + pgbase , copy ) ; kunmap_atomic ( vfrom , KM_USER0 ) ; pgbase += copy ; if ( pgbase == PAGE_CACHE_SIZE ) { pgbase = 0 ; pgfrom ++ ; } p += copy ; } while ( ( len -= copy ) != 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> void _copy_from_pages (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 static int tcp_v6_connect ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct sockaddr_in6 * usin = ( struct sockaddr_in6 * ) uaddr ; struct inet_sock * inet = inet_sk ( sk ) ; struct inet_connection_sock * icsk = inet_csk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct tcp_sock * tp = tcp_sk ( sk ) ; <S2SV_StartBug> struct in6_addr * saddr = NULL , * final_p , final ; <S2SV_EndBug> struct flowi6 fl6 ; struct dst_entry * dst ; int addr_type ; int err ; if ( addr_len < SIN6_LEN_RFC2133 ) return - EINVAL ; if ( usin -> sin6_family != AF_INET6 ) return - EAFNOSUPPORT ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; if ( np -> sndflow ) { fl6 . flowlabel = usin -> sin6_flowinfo & IPV6_FLOWINFO_MASK ; IP6_ECN_flow_init ( fl6 . flowlabel ) ; if ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) { struct ip6_flowlabel * flowlabel ; flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( ! flowlabel ) return - EINVAL ; fl6_sock_release ( flowlabel ) ; } } if ( ipv6_addr_any ( & usin -> sin6_addr ) ) usin -> sin6_addr . s6_addr [ 15 ] = 0x1 ; addr_type = ipv6_addr_type ( & usin -> sin6_addr ) ; if ( addr_type & IPV6_ADDR_MULTICAST ) return - ENETUNREACH ; if ( addr_type & IPV6_ADDR_LINKLOCAL ) { if ( addr_len >= sizeof ( struct sockaddr_in6 ) && usin -> sin6_scope_id ) { if ( sk -> sk_bound_dev_if && sk -> sk_bound_dev_if != usin -> sin6_scope_id ) return - EINVAL ; sk -> sk_bound_dev_if = usin -> sin6_scope_id ; } if ( ! sk -> sk_bound_dev_if ) return - EINVAL ; } if ( tp -> rx_opt . ts_recent_stamp && ! ipv6_addr_equal ( & sk -> sk_v6_daddr , & usin -> sin6_addr ) ) { tp -> rx_opt . ts_recent = 0 ; tp -> rx_opt . ts_recent_stamp = 0 ; tp -> write_seq = 0 ; } sk -> sk_v6_daddr = usin -> sin6_addr ; np -> flow_label = fl6 . flowlabel ; if ( addr_type == IPV6_ADDR_MAPPED ) { u32 exthdrlen = icsk -> icsk_ext_hdr_len ; struct sockaddr_in sin ; SOCK_DEBUG ( sk , \"connect:<S2SV_blank>ipv4<S2SV_blank>mapped\\\\n\" ) ; if ( __ipv6_only_sock ( sk ) ) return - ENETUNREACH ; sin . sin_family = AF_INET ; sin . sin_port = usin -> sin6_port ; sin . sin_addr . s_addr = usin -> sin6_addr . s6_addr32 [ 3 ] ; icsk -> icsk_af_ops = & ipv6_mapped ; sk -> sk_backlog_rcv = tcp_v4_do_rcv ; # ifdef CONFIG_TCP_MD5SIG tp -> af_specific = & tcp_sock_ipv6_mapped_specific ; # endif err = tcp_v4_connect ( sk , ( struct sockaddr * ) & sin , sizeof ( sin ) ) ; if ( err ) { icsk -> icsk_ext_hdr_len = exthdrlen ; icsk -> icsk_af_ops = & ipv6_specific ; sk -> sk_backlog_rcv = tcp_v6_do_rcv ; # ifdef CONFIG_TCP_MD5SIG tp -> af_specific = & tcp_sock_ipv6_specific ; # endif goto failure ; } np -> saddr = sk -> sk_v6_rcv_saddr ; return err ; } if ( ! ipv6_addr_any ( & sk -> sk_v6_rcv_saddr ) ) saddr = & sk -> sk_v6_rcv_saddr ; fl6 . flowi6_proto = IPPROTO_TCP ; fl6 . daddr = sk -> sk_v6_daddr ; fl6 . saddr = saddr ? * saddr : np -> saddr ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . flowi6_mark = sk -> sk_mark ; fl6 . fl6_dport = usin -> sin6_port ; fl6 . fl6_sport = inet -> inet_sport ; <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , np -> opt , & final ) ; <S2SV_EndBug> security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) { err = PTR_ERR ( dst ) ; goto failure ; } if ( ! saddr ) { saddr = & fl6 . saddr ; sk -> sk_v6_rcv_saddr = * saddr ; } np -> saddr = * saddr ; inet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; sk -> sk_gso_type = SKB_GSO_TCPV6 ; __ip6_dst_store ( sk , dst , NULL , NULL ) ; if ( tcp_death_row . sysctl_tw_recycle && ! tp -> rx_opt . ts_recent_stamp && ipv6_addr_equal ( & fl6 . daddr , & sk -> sk_v6_daddr ) ) tcp_fetch_timewait_stamp ( sk , dst ) ; icsk -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( np -> opt ) <S2SV_EndBug> <S2SV_StartBug> icsk -> icsk_ext_hdr_len = ( np -> opt -> opt_flen + <S2SV_EndBug> <S2SV_StartBug> np -> opt -> opt_nflen ) ; <S2SV_EndBug> tp -> rx_opt . mss_clamp = IPV6_MIN_MTU - sizeof ( struct tcphdr ) - sizeof ( struct ipv6hdr ) ; inet -> inet_dport = usin -> sin6_port ; tcp_set_state ( sk , TCP_SYN_SENT ) ; err = inet6_hash_connect ( & tcp_death_row , sk ) ; if ( err ) goto late_failure ; sk_set_txhash ( sk ) ; if ( ! tp -> write_seq && likely ( ! tp -> repair ) ) tp -> write_seq = secure_tcpv6_sequence_number ( np -> saddr . s6_addr32 , sk -> sk_v6_daddr . s6_addr32 , inet -> inet_sport , inet -> inet_dport ) ; err = tcp_connect ( sk ) ; if ( err ) goto late_failure ; return 0 ; late_failure : tcp_set_state ( sk , TCP_CLOSE ) ; __sk_dst_reset ( sk ) ; failure : inet -> inet_dport = 0 ; sk -> sk_route_caps = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> final_p , final ; struct ipv6_txoptions * opt <S2SV_ModStart> -> inet_sport ; opt = rcu_dereference_protected ( np -> opt , sock_owned_by_user ( sk ) ) ; <S2SV_ModStart> & fl6 , <S2SV_ModEnd> opt , & <S2SV_ModStart> ; if ( <S2SV_ModEnd> opt ) icsk <S2SV_ModStart> -> icsk_ext_hdr_len = <S2SV_ModEnd> opt -> opt_flen <S2SV_ModStart> -> opt_flen + <S2SV_ModEnd> opt -> opt_nflen <S2SV_ModStart> opt -> opt_nflen <S2SV_ModEnd> ; tp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14763\n\n```\nCWE-189 static int __dwc3_gadget_kick_transfer ( struct dwc3_ep * dep ) { struct dwc3_gadget_ep_cmd_params params ; struct dwc3_request * req ; int starting ; int ret ; u32 cmd ; if ( ! dwc3_calc_trbs_left ( dep ) ) return 0 ; starting = ! ( dep -> flags & DWC3_EP_BUSY ) ; dwc3_prepare_trbs ( dep ) ; req = next_request ( & dep -> started_list ) ; if ( ! req ) { dep -> flags |= DWC3_EP_PENDING_REQUEST ; return 0 ; } memset ( & params , 0 , sizeof ( params ) ) ; if ( starting ) { params . param0 = upper_32_bits ( req -> trb_dma ) ; params . param1 = lower_32_bits ( req -> trb_dma ) ; cmd = DWC3_DEPCMD_STARTTRANSFER ; if ( usb_endpoint_xfer_isoc ( dep -> endpoint . desc ) ) cmd |= DWC3_DEPCMD_PARAM ( dep -> frame_number ) ; } else { cmd = DWC3_DEPCMD_UPDATETRANSFER | DWC3_DEPCMD_PARAM ( dep -> resource_index ) ; } ret = dwc3_send_gadget_ep_cmd ( dep , cmd , & params ) ; if ( ret < 0 ) { if ( req -> trb ) memset ( req -> trb , 0 , sizeof ( struct dwc3_trb ) ) ; dep -> queued_requests -- ; <S2SV_StartBug> dwc3_gadget_giveback ( dep , req , ret ) ; <S2SV_EndBug> return ret ; } dep -> flags |= DWC3_EP_BUSY ; if ( starting ) { dep -> resource_index = dwc3_gadget_ep_get_transfer_index ( dep ) ; WARN_ON_ONCE ( ! dep -> resource_index ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> queued_requests -- ; dwc3_gadget_del_and_unmap_request <S2SV_ModEnd> ( dep ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadBGRImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * canvas_image , * image ; MagickBooleanType status ; MagickOffsetType scene ; QuantumInfo * quantum_info ; QuantumType quantum_type ; register ssize_t i ; size_t length ; ssize_t count , y ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( OptionError , \"MustSpecifyImageSize\" ) ; if ( image_info -> interlace != PartitionInterlace ) { status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( DiscardBlobBytes ( image , ( MagickSizeType ) image -> offset ) == MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } canvas_image = CloneImage ( image , image -> extract_info . width , 1 , MagickFalse , exception ) ; ( void ) SetImageVirtualPixelMethod ( canvas_image , BlackVirtualPixelMethod ) ; quantum_info = AcquireQuantumInfo ( image_info , canvas_image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = GetQuantumPixels ( quantum_info ) ; quantum_type = BGRQuantum ; if ( LocaleCompare ( image_info -> magick , \"BGRA\" ) == 0 ) { quantum_type = BGRAQuantum ; image -> matte = MagickTrue ; } if ( image_info -> number_scenes != 0 ) while ( image -> scene < image_info -> scene ) { image -> scene ++ ; length = GetQuantumExtent ( canvas_image , quantum_info , quantum_type ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) break ; } } count = 0 ; length = 0 ; scene = 0 ; do { if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) <S2SV_StartBug> break ; <S2SV_EndBug> switch ( image_info -> interlace ) { case NoInterlace : default : { if ( scene == 0 ) { length = GetQuantumExtent ( canvas_image , quantum_info , quantum_type ) ; count = ReadBlob ( image , length , pixels ) ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = QueueAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( q , GetPixelRed ( p ) ) ; SetPixelGreen ( q , GetPixelGreen ( p ) ) ; SetPixelBlue ( q , GetPixelBlue ( p ) ) ; SetPixelOpacity ( q , OpaqueOpacity ) ; if ( image -> matte != MagickFalse ) SetPixelOpacity ( q , GetPixelOpacity ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } break ; } case LineInterlace : { static QuantumType quantum_types [ 4 ] = { BlueQuantum , GreenQuantum , RedQuantum , AlphaQuantum } ; if ( scene == 0 ) { length = GetQuantumExtent ( canvas_image , quantum_info , RedQuantum ) ; count = ReadBlob ( image , length , pixels ) ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } for ( i = 0 ; i < ( ssize_t ) ( image -> matte != MagickFalse ? 4 : 3 ) ; i ++ ) { quantum_type = quantum_types [ i ] ; q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( quantum_type ) { case RedQuantum : { SetPixelRed ( q , GetPixelRed ( p ) ) ; break ; } case GreenQuantum : { SetPixelGreen ( q , GetPixelGreen ( p ) ) ; break ; } case BlueQuantum : { SetPixelBlue ( q , GetPixelBlue ( p ) ) ; break ; } case OpacityQuantum : { SetPixelOpacity ( q , GetPixelOpacity ( p ) ) ; break ; } case AlphaQuantum : { SetPixelAlpha ( q , GetPixelAlpha ( p ) ) ; break ; } default : break ; } p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case PlaneInterlace : { if ( scene == 0 ) { length = GetQuantumExtent ( canvas_image , quantum_info , RedQuantum ) ; count = ReadBlob ( image , length , pixels ) ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , RedQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( q , GetPixelRed ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 1 , 6 ) ; if ( status == MagickFalse ) break ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , GreenQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelGreen ( q , GetPixelGreen ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 2 , 6 ) ; if ( status == MagickFalse ) break ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , BlueQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( q , GetPixelBlue ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 3 , 6 ) ; if ( status == MagickFalse ) break ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 4 , 6 ) ; if ( status == MagickFalse ) break ; } if ( image -> matte != MagickFalse ) { for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , AlphaQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelOpacity ( q , GetPixelOpacity ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 5 , 6 ) ; if ( status == MagickFalse ) break ; } } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 6 , 6 ) ; if ( status == MagickFalse ) break ; } break ; } case PartitionInterlace : { AppendImageFormat ( \"B\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { canvas_image = DestroyImageList ( canvas_image ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( DiscardBlobBytes ( image , ( MagickSizeType ) image -> offset ) == MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; length = GetQuantumExtent ( canvas_image , quantum_info , BlueQuantum ) ; for ( i = 0 ; i < ( ssize_t ) scene ; i ++ ) for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) if ( ReadBlob ( image , length , pixels ) != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } count = ReadBlob ( image , length , pixels ) ; for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , BlueQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( q , GetPixelRed ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 1 , 5 ) ; if ( status == MagickFalse ) break ; } ( void ) CloseBlob ( image ) ; AppendImageFormat ( \"G\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { canvas_image = DestroyImageList ( canvas_image ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = GetQuantumExtent ( canvas_image , quantum_info , GreenQuantum ) ; for ( i = 0 ; i < ( ssize_t ) scene ; i ++ ) for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) if ( ReadBlob ( image , length , pixels ) != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } count = ReadBlob ( image , length , pixels ) ; for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , GreenQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelGreen ( q , GetPixelGreen ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 2 , 5 ) ; if ( status == MagickFalse ) break ; } ( void ) CloseBlob ( image ) ; AppendImageFormat ( \"R\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { canvas_image = DestroyImageList ( canvas_image ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = GetQuantumExtent ( canvas_image , quantum_info , RedQuantum ) ; for ( i = 0 ; i < ( ssize_t ) scene ; i ++ ) for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) if ( ReadBlob ( image , length , pixels ) != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } count = ReadBlob ( image , length , pixels ) ; for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , RedQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( q , GetPixelBlue ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 3 , 5 ) ; if ( status == MagickFalse ) break ; } if ( image -> matte != MagickFalse ) { ( void ) CloseBlob ( image ) ; AppendImageFormat ( \"A\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { canvas_image = DestroyImageList ( canvas_image ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = GetQuantumExtent ( canvas_image , quantum_info , AlphaQuantum ) ; for ( i = 0 ; i < ( ssize_t ) scene ; i ++ ) for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) if ( ReadBlob ( image , length , pixels ) != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } count = ReadBlob ( image , length , pixels ) ; for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register PixelPacket * restrict q ; register ssize_t x ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , BlueQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelOpacity ( q , GetPixelOpacity ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 4 , 5 ) ; if ( status == MagickFalse ) break ; } } ( void ) CloseBlob ( image ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 5 , 5 ) ; if ( status == MagickFalse ) break ; } break ; } } SetQuantumImageType ( image , quantum_type ) ; if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( count == ( ssize_t ) length ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } scene ++ ; } while ( count == ( ssize_t ) length ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; InheritException ( & image -> exception , & canvas_image -> exception ) ; canvas_image = DestroyImage ( canvas_image ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9933\n\n```\nCWE-119 void gdImageFillToBorder ( gdImagePtr im , int x , int y , int border , int color ) { int lastBorder ; int leftLimit = - 1 , rightLimit ; int i , restoreAlphaBlending = 0 ; <S2SV_StartBug> if ( border < 0 ) { <S2SV_EndBug> return ; } if ( ! im -> trueColor ) { if ( ( color > ( im -> colorsTotal - 1 ) ) || ( border > ( im -> colorsTotal - 1 ) ) || ( color < 0 ) ) { return ; } } restoreAlphaBlending = im -> alphaBlendingFlag ; im -> alphaBlendingFlag = 0 ; if ( x >= im -> sx ) { x = im -> sx - 1 ; } else if ( x < 0 ) { x = 0 ; } if ( y >= im -> sy ) { y = im -> sy - 1 ; } else if ( y < 0 ) { y = 0 ; } for ( i = x ; i >= 0 ; i -- ) { if ( gdImageGetPixel ( im , i , y ) == border ) { break ; } gdImageSetPixel ( im , i , y , color ) ; leftLimit = i ; } if ( leftLimit == - 1 ) { im -> alphaBlendingFlag = restoreAlphaBlending ; return ; } rightLimit = x ; for ( i = ( x + 1 ) ; i < im -> sx ; i ++ ) { if ( gdImageGetPixel ( im , i , y ) == border ) { break ; } gdImageSetPixel ( im , i , y , color ) ; rightLimit = i ; } if ( y > 0 ) { lastBorder = 1 ; for ( i = leftLimit ; i <= rightLimit ; i ++ ) { int c = gdImageGetPixel ( im , i , y - 1 ) ; if ( lastBorder ) { if ( ( c != border ) && ( c != color ) ) { gdImageFillToBorder ( im , i , y - 1 , border , color ) ; lastBorder = 0 ; } } else if ( ( c == border ) || ( c == color ) ) { lastBorder = 1 ; } } } if ( y < ( ( im -> sy ) - 1 ) ) { lastBorder = 1 ; for ( i = leftLimit ; i <= rightLimit ; i ++ ) { int c = gdImageGetPixel ( im , i , y + 1 ) ; if ( lastBorder ) { if ( ( c != border ) && ( c != color ) ) { gdImageFillToBorder ( im , i , y + 1 , border , color ) ; lastBorder = 0 ; } } else if ( ( c == border ) || ( c == color ) ) { lastBorder = 1 ; } } } im -> alphaBlendingFlag = restoreAlphaBlending ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> border < 0 || color < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-362 void uverbs_user_mmap_disassociate ( struct ib_uverbs_file * ufile ) { struct rdma_umap_priv * priv , * next_priv ; lockdep_assert_held ( & ufile -> hw_destroy_rwsem ) ; while ( 1 ) { struct mm_struct * mm = NULL ; mutex_lock ( & ufile -> umap_lock ) ; while ( ! list_empty ( & ufile -> umaps ) ) { int ret ; priv = list_first_entry ( & ufile -> umaps , struct rdma_umap_priv , list ) ; mm = priv -> vma -> vm_mm ; ret = mmget_not_zero ( mm ) ; if ( ! ret ) { list_del_init ( & priv -> list ) ; mm = NULL ; continue ; } break ; } mutex_unlock ( & ufile -> umap_lock ) ; if ( ! mm ) return ; <S2SV_StartBug> down_write ( & mm -> mmap_sem ) ; <S2SV_EndBug> mutex_lock ( & ufile -> umap_lock ) ; list_for_each_entry_safe ( priv , next_priv , & ufile -> umaps , list ) { struct vm_area_struct * vma = priv -> vma ; if ( vma -> vm_mm != mm ) continue ; list_del_init ( & priv -> list ) ; zap_vma_ptes ( vma , vma -> vm_start , vma -> vm_end - vma -> vm_start ) ; vma -> vm_flags &= ~ ( VM_SHARED | VM_MAYSHARE ) ; } mutex_unlock ( & ufile -> umap_lock ) ; <S2SV_StartBug> up_write ( & mm -> mmap_sem ) ; <S2SV_EndBug> mmput ( mm ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mmap_sem ) ; if ( ! mmget_still_valid ( mm ) ) goto skip_mm <S2SV_ModStart> umap_lock ) ; skip_mm :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14064\n\n```\nCWE-119 static VALUE cState_indent_set ( VALUE self , VALUE indent ) { unsigned long len ; GET_STATE ( self ) ; Check_Type ( indent , T_STRING ) ; len = RSTRING_LEN ( indent ) ; if ( len == 0 ) { if ( state -> indent ) { ruby_xfree ( state -> indent ) ; state -> indent = NULL ; state -> indent_len = 0 ; } } else { if ( state -> indent ) ruby_xfree ( state -> indent ) ; <S2SV_StartBug> state -> indent = strdup ( RSTRING_PTR ( indent ) ) ; <S2SV_EndBug> state -> indent_len = len ; } return Qnil ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> indent = fstrndup <S2SV_ModEnd> ( RSTRING_PTR ( <S2SV_ModStart> ( indent ) , len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-1152\n\n```\nCWE-20 static int try_read_command ( conn * c ) { assert ( c != NULL ) ; assert ( c -> rcurr <= ( c -> rbuf + c -> rsize ) ) ; assert ( c -> rbytes > 0 ) ; if ( c -> protocol == negotiating_prot || c -> transport == udp_transport ) { if ( ( unsigned char ) c -> rbuf [ 0 ] == ( unsigned char ) PROTOCOL_BINARY_REQ ) { c -> protocol = binary_prot ; } else { c -> protocol = ascii_prot ; } if ( settings . verbose > 1 ) { fprintf ( stderr , \"%d:<S2SV_blank>Client<S2SV_blank>using<S2SV_blank>the<S2SV_blank>%s<S2SV_blank>protocol\\\\n\" , c -> sfd , prot_text ( c -> protocol ) ) ; } } if ( c -> protocol == binary_prot ) { if ( c -> rbytes < sizeof ( c -> binary_header ) ) { return 0 ; } else { # ifdef NEED_ALIGN if ( ( ( long ) ( c -> rcurr ) ) % 8 != 0 ) { memmove ( c -> rbuf , c -> rcurr , c -> rbytes ) ; c -> rcurr = c -> rbuf ; if ( settings . verbose > 1 ) { fprintf ( stderr , \"%d:<S2SV_blank>Realign<S2SV_blank>input<S2SV_blank>buffer\\\\n\" , c -> sfd ) ; } } # endif protocol_binary_request_header * req ; req = ( protocol_binary_request_header * ) c -> rcurr ; if ( settings . verbose > 1 ) { int ii ; fprintf ( stderr , \"<%d<S2SV_blank>Read<S2SV_blank>binary<S2SV_blank>protocol<S2SV_blank>data:\" , c -> sfd ) ; for ( ii = 0 ; ii < sizeof ( req -> bytes ) ; ++ ii ) { if ( ii % 4 == 0 ) { fprintf ( stderr , \"\\\\n<%d<S2SV_blank><S2SV_blank><S2SV_blank>\" , c -> sfd ) ; } fprintf ( stderr , \"<S2SV_blank>0x%02x\" , req -> bytes [ ii ] ) ; } fprintf ( stderr , \"\\\\n\" ) ; } c -> binary_header = * req ; c -> binary_header . request . keylen = ntohs ( req -> request . keylen ) ; c -> binary_header . request . bodylen = ntohl ( req -> request . bodylen ) ; c -> binary_header . request . cas = ntohll ( req -> request . cas ) ; if ( c -> binary_header . request . magic != PROTOCOL_BINARY_REQ ) { if ( settings . verbose ) { fprintf ( stderr , \"Invalid<S2SV_blank>magic:<S2SV_blank><S2SV_blank>%x\\\\n\" , c -> binary_header . request . magic ) ; } conn_set_state ( c , conn_closing ) ; return - 1 ; } c -> msgcurr = 0 ; c -> msgused = 0 ; c -> iovused = 0 ; if ( add_msghdr ( c ) != 0 ) { out_string ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\" ) ; return 0 ; } c -> cmd = c -> binary_header . request . opcode ; c -> keylen = c -> binary_header . request . keylen ; c -> opaque = c -> binary_header . request . opaque ; c -> cas = 0 ; dispatch_bin_command ( c ) ; c -> rbytes -= sizeof ( c -> binary_header ) ; c -> rcurr += sizeof ( c -> binary_header ) ; } } else { char * el , * cont ; if ( c -> rbytes == 0 ) return 0 ; el = memchr ( c -> rcurr , '\\\\n' , c -> rbytes ) ; if ( ! el ) { if ( c -> rbytes > 1024 ) { char * ptr = c -> rcurr ; while ( * ptr == '<S2SV_blank>' ) { ++ ptr ; } <S2SV_StartBug> if ( strcmp ( ptr , \"get<S2SV_blank>\" ) && strcmp ( ptr , \"gets<S2SV_blank>\" ) ) { <S2SV_EndBug> conn_set_state ( c , conn_closing ) ; return 1 ; } } return 0 ; } cont = el + 1 ; if ( ( el - c -> rcurr ) > 1 && * ( el - 1 ) == '\\\\r' ) { el -- ; } * el = '\\\\0' ; assert ( cont <= ( c -> rcurr + c -> rbytes ) ) ; process_command ( c , c -> rcurr ) ; c -> rbytes -= ( cont - c -> rcurr ) ; c -> rcurr = cont ; assert ( c -> rcurr <= ( c -> rbuf + c -> rsize ) ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ptr - c -> rcurr > 100 || ( strncmp ( ptr , \"get<S2SV_blank>\" , 4 ) && strncmp <S2SV_ModEnd> ( ptr , <S2SV_ModStart> ptr , \"gets<S2SV_blank>\" , 5 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0205\n\n```\nCWE-119 static inline struct futex_hash_bucket * queue_lock ( struct futex_q * q ) { <S2SV_StartBug> struct futex_hash_bucket * hb ; <S2SV_EndBug> get_futex_key_refs ( & q -> key ) ; hb = hash_futex ( & q -> key ) ; q -> lock_ptr = & hb -> lock ; spin_lock ( & hb -> lock ) ; return hb ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> futex_hash_bucket * hb <S2SV_ModEnd> ; hb =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 SQLITE_PRIVATE void sqlite3VtabBeginParse ( Parse * pParse , Token * pName1 , Token * pName2 , Token * pModuleName , int ifNotExists ) { Table * pTable ; sqlite3 * db ; sqlite3StartTable ( pParse , pName1 , pName2 , 0 , 0 , 1 , ifNotExists ) ; pTable = pParse -> pNewTable ; if ( pTable == 0 ) return ; assert ( 0 == pTable -> pIndex ) ; db = pParse -> db ; assert ( pTable -> nModuleArg == 0 ) ; <S2SV_StartBug> addModuleArgument ( db , pTable , sqlite3NameFromToken ( db , pModuleName ) ) ; <S2SV_EndBug> <S2SV_StartBug> addModuleArgument ( db , pTable , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> addModuleArgument ( db , pTable , sqlite3DbStrDup ( db , pTable -> zName ) ) ; <S2SV_EndBug> assert ( ( pParse -> sNameToken . z == pName2 -> z && pName2 -> z != 0 ) || ( pParse -> sNameToken . z == pName1 -> z && pName2 -> z == 0 ) ) ; pParse -> sNameToken . n = ( int ) ( & pModuleName -> z [ pModuleName -> n ] - pParse -> sNameToken . z ) ; # ifndef SQLITE_OMIT_AUTHORIZATION if ( pTable -> azModuleArg ) { int iDb = sqlite3SchemaToIndex ( db , pTable -> pSchema ) ; assert ( iDb >= 0 ) ; sqlite3AuthCheck ( pParse , SQLITE_CREATE_VTABLE , pTable -> zName , pTable -> azModuleArg [ 0 ] , pParse -> db -> aDb [ iDb ] . zDbSName ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; addModuleArgument ( pParse <S2SV_ModEnd> , pTable , <S2SV_ModStart> ; addModuleArgument ( pParse <S2SV_ModEnd> , pTable , <S2SV_ModStart> ; addModuleArgument ( pParse <S2SV_ModEnd> , pTable ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7514\n\n```\nCWE-125 static MagickBooleanType ReadPSDChannelPixels ( Image * image , const size_t channels , const size_t row , const ssize_t type , const unsigned char * pixels , ExceptionInfo * exception ) { Quantum pixel ; register const unsigned char * p ; register Quantum * q ; register ssize_t x ; size_t packet_size ; unsigned short nibble ; p = pixels ; q = GetAuthenticPixels ( image , 0 , row , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) return MagickFalse ; packet_size = GetPSDPacketSize ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( packet_size == 1 ) pixel = ScaleCharToQuantum ( * p ++ ) ; else { p = PushShortPixel ( MSBEndian , p , & nibble ) ; pixel = ScaleShortToQuantum ( nibble ) ; } <S2SV_StartBug> switch ( type ) <S2SV_EndBug> { case - 1 : { SetPixelAlpha ( image , pixel , q ) ; break ; } case - 2 : case 0 : { SetPixelRed ( image , pixel , q ) ; if ( channels == 1 || type == - 2 ) SetPixelGray ( image , pixel , q ) ; if ( image -> storage_class == PseudoClass ) { if ( packet_size == 1 ) SetPixelIndex ( image , ScaleQuantumToChar ( pixel ) , q ) ; else SetPixelIndex ( image , ScaleQuantumToShort ( pixel ) , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) ConstrainColormapIndex ( image , GetPixelIndex ( image , q ) , exception ) , q ) ; if ( image -> depth == 1 ) { ssize_t bit , number_bits ; number_bits = image -> columns - x ; if ( number_bits > 8 ) number_bits = 8 ; for ( bit = 0 ; bit < number_bits ; bit ++ ) { <S2SV_StartBug> SetPixelIndex ( image , ( ( ( unsigned char ) pixel ) & <S2SV_EndBug> <S2SV_StartBug> ( 0x01 << ( 7 - bit ) ) ) != 0 ? 0 : 255 , q ) ; <S2SV_EndBug> SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) ConstrainColormapIndex ( image , GetPixelIndex ( image , q ) , exception ) , q ) ; q += GetPixelChannels ( image ) ; x ++ ; } <S2SV_StartBug> x -- ; <S2SV_EndBug> continue ; } } <S2SV_StartBug> break ; <S2SV_EndBug> } case 1 : { if ( image -> storage_class == PseudoClass ) SetPixelAlpha ( image , pixel , q ) ; else SetPixelGreen ( image , pixel , q ) ; break ; } case 2 : { if ( image -> storage_class == PseudoClass ) SetPixelAlpha ( image , pixel , q ) ; else SetPixelBlue ( image , pixel , q ) ; break ; } case 3 : { if ( image -> colorspace == CMYKColorspace ) SetPixelBlack ( image , pixel , q ) ; else if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , pixel , q ) ; break ; } case 4 : { if ( ( IssRGBCompatibleColorspace ( image -> colorspace ) != MagickFalse ) && ( channels > 3 ) ) break ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , pixel , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } return ( SyncAuthenticPixels ( image , exception ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( image -> depth > 1 ) { SetPSDPixel ( image , channels , type , packet_size , pixel , q , exception ) ; q += GetPixelChannels ( image ) ; } else <S2SV_ModEnd> { ssize_t bit <S2SV_ModStart> ++ ) { SetPSDPixel ( image , channels , type , packet_size <S2SV_ModEnd> , ( ( <S2SV_ModStart> 255 , q , exception <S2SV_ModEnd> ) ; q <S2SV_ModStart> ++ ; } if ( x != image -> columns ) <S2SV_ModStart> ; } } <S2SV_ModEnd> return ( SyncAuthenticPixels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4129\n\n```\nCWE-20 static int __br_mdb_del ( struct net_bridge * br , struct br_mdb_entry * entry ) { struct net_bridge_mdb_htable * mdb ; struct net_bridge_mdb_entry * mp ; struct net_bridge_port_group * p ; struct net_bridge_port_group __rcu * * pp ; struct br_ip ip ; int err = - EINVAL ; if ( ! netif_running ( br -> dev ) || br -> multicast_disabled ) return - EINVAL ; if ( timer_pending ( & br -> multicast_querier_timer ) ) return - EBUSY ; ip . proto = entry -> addr . proto ; if ( ip . proto == htons ( ETH_P_IP ) ) ip . u . ip4 = entry -> addr . u . ip4 ; # if IS_ENABLED ( CONFIG_IPV6 ) else ip . u . ip6 = entry -> addr . u . ip6 ; # endif spin_lock_bh ( & br -> multicast_lock ) ; mdb = mlock_dereference ( br -> mdb , br ) ; mp = br_mdb_ip_get ( mdb , & ip ) ; if ( ! mp ) goto unlock ; for ( pp = & mp -> ports ; ( p = mlock_dereference ( * pp , br ) ) != NULL ; pp = & p -> next ) { if ( ! p -> port || p -> port -> dev -> ifindex != entry -> ifindex ) continue ; if ( p -> port -> state == BR_STATE_DISABLED ) goto unlock ; rcu_assign_pointer ( * pp , p -> next ) ; hlist_del_init ( & p -> mglist ) ; del_timer ( & p -> timer ) ; call_rcu_bh ( & p -> rcu , br_multicast_free_pg ) ; err = 0 ; <S2SV_StartBug> if ( ! mp -> ports && ! mp -> mglist && <S2SV_EndBug> netif_running ( br -> dev ) ) mod_timer ( & mp -> timer , jiffies ) ; break ; } unlock : spin_unlock_bh ( & br -> multicast_lock ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mglist && mp -> timer_armed &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5357\n\n```\nCWE-20 static gboolean parse_netscreen_packet ( FILE_T fh , struct wtap_pkthdr * phdr , Buffer * buf , char * line , int * err , gchar * * err_info ) { <S2SV_StartBug> int sec ; <S2SV_EndBug> int dsec ; char cap_int [ NETSCREEN_MAX_INT_NAME_LENGTH ] ; char direction [ 2 ] ; <S2SV_StartBug> guint pkt_len ; <S2SV_EndBug> char cap_src [ 13 ] ; char cap_dst [ 13 ] ; guint8 * pd ; gchar * p ; int n , i = 0 ; <S2SV_StartBug> guint offset = 0 ; <S2SV_EndBug> gchar dststr [ 13 ] ; phdr -> rec_type = REC_TYPE_PACKET ; phdr -> presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN ; <S2SV_StartBug> if ( sscanf ( line , \"%9d.%9d:<S2SV_blank>%15[a-z0-9/:.-](%1[io])<S2SV_blank>len=%9u:%12s->%12s/\" , <S2SV_EndBug> & sec , & dsec , cap_int , direction , & pkt_len , cap_src , cap_dst ) < 5 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>Can\\'t<S2SV_blank>parse<S2SV_blank>packet-header\" ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } if ( pkt_len > WTAP_MAX_PACKET_SIZE ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup_printf ( \"netscreen:<S2SV_blank>File<S2SV_blank>has<S2SV_blank>%u-byte<S2SV_blank>packet,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>maximum<S2SV_blank>of<S2SV_blank>%u\" , pkt_len , WTAP_MAX_PACKET_SIZE ) ; return FALSE ; } phdr -> ts . secs = sec ; phdr -> ts . nsecs = dsec * 100000000 ; phdr -> len = pkt_len ; ws_buffer_assure_space ( buf , pkt_len ) ; pd = ws_buffer_start_ptr ( buf ) ; while ( 1 ) { if ( file_gets ( line , NETSCREEN_LINE_LENGTH , fh ) == NULL ) { break ; } for ( p = & line [ 0 ] ; g_ascii_isspace ( * p ) ; p ++ ) ; if ( * p == '\\\\0' ) { break ; } n = parse_single_hex_dump_line ( p , pd , offset ) ; if ( offset == 0 && n < 6 ) { if ( info_line ( line ) ) { if ( ++ i <= NETSCREEN_MAX_INFOLINES ) { continue ; } } else { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>cannot<S2SV_blank>parse<S2SV_blank>hex-data\" ) ; return FALSE ; } } if ( n == - 1 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>cannot<S2SV_blank>parse<S2SV_blank>hex-data\" ) ; return FALSE ; } offset += n ; if ( offset > pkt_len ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>too<S2SV_blank>much<S2SV_blank>hex-data\" ) ; return FALSE ; } } if ( strncmp ( cap_int , \"adsl\" , 4 ) == 0 ) { g_snprintf ( dststr , 13 , \"%02x%02x%02x%02x%02x%02x\" , pd [ 0 ] , pd [ 1 ] , pd [ 2 ] , pd [ 3 ] , pd [ 4 ] , pd [ 5 ] ) ; if ( strncmp ( dststr , cap_dst , 12 ) == 0 ) phdr -> pkt_encap = WTAP_ENCAP_ETHERNET ; else phdr -> pkt_encap = WTAP_ENCAP_PPP ; } else if ( strncmp ( cap_int , \"seri\" , 4 ) == 0 ) phdr -> pkt_encap = WTAP_ENCAP_PPP ; else phdr -> pkt_encap = WTAP_ENCAP_ETHERNET ; phdr -> caplen = offset ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { int pkt_len ; int <S2SV_ModStart> 2 ] ; <S2SV_ModEnd> char cap_src [ <S2SV_ModStart> = 0 ; int <S2SV_ModEnd> offset = 0 <S2SV_ModStart> ( line , \"%9d.%9d:<S2SV_blank>%15[a-z0-9/:.-](%1[io])<S2SV_blank>len=%9d:%12s->%12s/\" <S2SV_ModEnd> , & sec <S2SV_ModStart> return - 1 ; } if ( pkt_len < 0 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>has<S2SV_blank>a<S2SV_blank>negative<S2SV_blank>packet<S2SV_blank>length\" ) ; return FALSE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-326 void Init_ossl_cipher ( void ) { # if 0 mOSSL = rb_define_module ( \"OpenSSL\" ) ; eOSSLError = rb_define_class_under ( mOSSL , \"OpenSSLError\" , rb_eStandardError ) ; # endif cCipher = rb_define_class_under ( mOSSL , \"Cipher\" , rb_cObject ) ; eCipherError = rb_define_class_under ( cCipher , \"CipherError\" , eOSSLError ) ; rb_define_alloc_func ( cCipher , ossl_cipher_alloc ) ; rb_define_copy_func ( cCipher , ossl_cipher_copy ) ; rb_define_module_function ( cCipher , \"ciphers\" , ossl_s_ciphers , 0 ) ; rb_define_method ( cCipher , \"initialize\" , ossl_cipher_initialize , 1 ) ; rb_define_method ( cCipher , \"reset\" , ossl_cipher_reset , 0 ) ; rb_define_method ( cCipher , \"encrypt\" , ossl_cipher_encrypt , - 1 ) ; rb_define_method ( cCipher , \"decrypt\" , ossl_cipher_decrypt , - 1 ) ; rb_define_method ( cCipher , \"pkcs5_keyivgen\" , ossl_cipher_pkcs5_keyivgen , - 1 ) ; rb_define_method ( cCipher , \"update\" , ossl_cipher_update , - 1 ) ; rb_define_method ( cCipher , \"final\" , ossl_cipher_final , 0 ) ; rb_define_method ( cCipher , \"name\" , ossl_cipher_name , 0 ) ; rb_define_method ( cCipher , \"key=\" , ossl_cipher_set_key , 1 ) ; rb_define_method ( cCipher , \"auth_data=\" , ossl_cipher_set_auth_data , 1 ) ; rb_define_method ( cCipher , \"auth_tag=\" , ossl_cipher_set_auth_tag , 1 ) ; rb_define_method ( cCipher , \"auth_tag\" , ossl_cipher_get_auth_tag , - 1 ) ; rb_define_method ( cCipher , \"auth_tag_len=\" , ossl_cipher_set_auth_tag_len , 1 ) ; rb_define_method ( cCipher , \"authenticated?\" , ossl_cipher_is_authenticated , 0 ) ; rb_define_method ( cCipher , \"key_len=\" , ossl_cipher_set_key_length , 1 ) ; rb_define_method ( cCipher , \"key_len\" , ossl_cipher_key_length , 0 ) ; rb_define_method ( cCipher , \"iv=\" , ossl_cipher_set_iv , 1 ) ; rb_define_method ( cCipher , \"iv_len=\" , ossl_cipher_set_iv_length , 1 ) ; rb_define_method ( cCipher , \"iv_len\" , ossl_cipher_iv_length , 0 ) ; rb_define_method ( cCipher , \"block_size\" , ossl_cipher_block_size , 0 ) ; rb_define_method ( cCipher , \"padding=\" , ossl_cipher_set_padding , 1 ) ; id_auth_tag_len = rb_intern_const ( \"auth_tag_len\" ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"auth_tag_len\" ) ; id_key_set = rb_intern_const ( \"key_set\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_reference_frames ( VP8_COMP * cpi ) { VP8_COMMON * cm = & cpi -> common ; YV12_BUFFER_CONFIG * yv12_fb = cm -> yv12_fb ; if ( cm -> frame_type == KEY_FRAME ) { yv12_fb [ cm -> new_fb_idx ] . flags |= VP8_GOLD_FRAME | VP8_ALTR_FRAME ; yv12_fb [ cm -> gld_fb_idx ] . flags &= ~ VP8_GOLD_FRAME ; yv12_fb [ cm -> alt_fb_idx ] . flags &= ~ VP8_ALTR_FRAME ; cm -> alt_fb_idx = cm -> gld_fb_idx = cm -> new_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> cpi -> current_ref_frames [ GOLDEN_FRAME ] = cm -> current_video_frame ; cpi -> current_ref_frames [ ALTREF_FRAME ] = cm -> current_video_frame ; <S2SV_StartBug> # endif <S2SV_EndBug> } else { if ( cm -> refresh_alt_ref_frame ) { assert ( ! cm -> copy_buffer_to_arf ) ; cm -> yv12_fb [ cm -> new_fb_idx ] . flags |= VP8_ALTR_FRAME ; cm -> yv12_fb [ cm -> alt_fb_idx ] . flags &= ~ VP8_ALTR_FRAME ; cm -> alt_fb_idx = cm -> new_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> cpi -> current_ref_frames [ ALTREF_FRAME ] = cm -> current_video_frame ; <S2SV_StartBug> # endif <S2SV_EndBug> } else if ( cm -> copy_buffer_to_arf ) { assert ( ! ( cm -> copy_buffer_to_arf & ~ 0x3 ) ) ; if ( cm -> copy_buffer_to_arf == 1 ) { if ( cm -> alt_fb_idx != cm -> lst_fb_idx ) { yv12_fb [ cm -> lst_fb_idx ] . flags |= VP8_ALTR_FRAME ; yv12_fb [ cm -> alt_fb_idx ] . flags &= ~ VP8_ALTR_FRAME ; cm -> alt_fb_idx = cm -> lst_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> cpi -> current_ref_frames [ ALTREF_FRAME ] = cpi -> current_ref_frames [ LAST_FRAME ] ; <S2SV_StartBug> # endif <S2SV_EndBug> } } else { if ( cm -> alt_fb_idx != cm -> gld_fb_idx ) { yv12_fb [ cm -> gld_fb_idx ] . flags |= VP8_ALTR_FRAME ; yv12_fb [ cm -> alt_fb_idx ] . flags &= ~ VP8_ALTR_FRAME ; cm -> alt_fb_idx = cm -> gld_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> cpi -> current_ref_frames [ ALTREF_FRAME ] = cpi -> current_ref_frames [ GOLDEN_FRAME ] ; <S2SV_StartBug> # endif <S2SV_EndBug> } } } if ( cm -> refresh_golden_frame ) { assert ( ! cm -> copy_buffer_to_gf ) ; cm -> yv12_fb [ cm -> new_fb_idx ] . flags |= VP8_GOLD_FRAME ; cm -> yv12_fb [ cm -> gld_fb_idx ] . flags &= ~ VP8_GOLD_FRAME ; cm -> gld_fb_idx = cm -> new_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> cpi -> current_ref_frames [ GOLDEN_FRAME ] = cm -> current_video_frame ; <S2SV_StartBug> # endif <S2SV_EndBug> } else if ( cm -> copy_buffer_to_gf ) { assert ( ! ( cm -> copy_buffer_to_arf & ~ 0x3 ) ) ; if ( cm -> copy_buffer_to_gf == 1 ) { if ( cm -> gld_fb_idx != cm -> lst_fb_idx ) { yv12_fb [ cm -> lst_fb_idx ] . flags |= VP8_GOLD_FRAME ; yv12_fb [ cm -> gld_fb_idx ] . flags &= ~ VP8_GOLD_FRAME ; cm -> gld_fb_idx = cm -> lst_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> cpi -> current_ref_frames [ GOLDEN_FRAME ] = cpi -> current_ref_frames [ LAST_FRAME ] ; <S2SV_StartBug> # endif <S2SV_EndBug> } } else { if ( cm -> alt_fb_idx != cm -> gld_fb_idx ) { yv12_fb [ cm -> alt_fb_idx ] . flags |= VP8_GOLD_FRAME ; yv12_fb [ cm -> gld_fb_idx ] . flags &= ~ VP8_GOLD_FRAME ; cm -> gld_fb_idx = cm -> alt_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> cpi -> current_ref_frames [ GOLDEN_FRAME ] = cpi -> current_ref_frames [ ALTREF_FRAME ] ; <S2SV_StartBug> # endif <S2SV_EndBug> } } } } if ( cm -> refresh_last_frame ) { cm -> yv12_fb [ cm -> new_fb_idx ] . flags |= VP8_LAST_FRAME ; cm -> yv12_fb [ cm -> lst_fb_idx ] . flags &= ~ VP8_LAST_FRAME ; cm -> lst_fb_idx = cm -> new_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> cpi -> current_ref_frames [ LAST_FRAME ] = cm -> current_video_frame ; <S2SV_StartBug> # endif <S2SV_EndBug> } # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity ) { if ( cm -> frame_type == KEY_FRAME ) { int i ; <S2SV_StartBug> vp8_yv12_copy_frame ( <S2SV_EndBug> cpi -> Source , & cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] ) ; vp8_yv12_extend_frame_borders ( & cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] ) ; <S2SV_StartBug> for ( i = 2 ; i < MAX_REF_FRAMES - 1 ; i ++ ) <S2SV_EndBug> vp8_yv12_copy_frame ( <S2SV_StartBug> & cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] , <S2SV_EndBug> & cpi -> denoiser . yv12_running_avg [ i ] ) ; } else { vp8_yv12_extend_frame_borders ( & cpi -> denoiser . yv12_running_avg [ INTRA_FRAME ] ) ; if ( cm -> refresh_alt_ref_frame || cm -> copy_buffer_to_arf ) { vp8_yv12_copy_frame ( & cpi -> denoiser . yv12_running_avg [ INTRA_FRAME ] , & cpi -> denoiser . yv12_running_avg [ ALTREF_FRAME ] ) ; } if ( cm -> refresh_golden_frame || cm -> copy_buffer_to_gf ) { vp8_yv12_copy_frame ( & cpi -> denoiser . yv12_running_avg [ INTRA_FRAME ] , & cpi -> denoiser . yv12_running_avg [ GOLDEN_FRAME ] ) ; } if ( cm -> refresh_last_frame ) { vp8_yv12_copy_frame ( & cpi -> denoiser . yv12_running_avg [ INTRA_FRAME ] , & cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] ) ; } } <S2SV_StartBug> } <S2SV_EndBug> # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> new_fb_idx ; <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> -> current_video_frame ; <S2SV_ModEnd> } else { <S2SV_ModStart> -> new_fb_idx ; <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> -> current_video_frame ; <S2SV_ModEnd> } else if <S2SV_ModStart> -> lst_fb_idx ; <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> LAST_FRAME ] ; <S2SV_ModEnd> } } else <S2SV_ModStart> -> gld_fb_idx ; <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> GOLDEN_FRAME ] ; <S2SV_ModEnd> } } } <S2SV_ModStart> -> new_fb_idx ; <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> -> current_video_frame ; <S2SV_ModEnd> } else if <S2SV_ModStart> -> lst_fb_idx ; <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> LAST_FRAME ] ; <S2SV_ModEnd> } } else <S2SV_ModStart> -> alt_fb_idx ; <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> ALTREF_FRAME ] ; <S2SV_ModEnd> } } } <S2SV_ModStart> -> new_fb_idx ; <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> -> current_video_frame ; <S2SV_ModEnd> } # if <S2SV_ModStart> int i ; for ( i = LAST_FRAME <S2SV_ModEnd> ; i < <S2SV_ModStart> i < MAX_REF_FRAMES ; ++ i <S2SV_ModEnd> ) vp8_yv12_copy_frame ( <S2SV_ModStart> ) vp8_yv12_copy_frame ( cpi -> Source <S2SV_ModEnd> , & cpi <S2SV_ModStart> ; } } if ( cpi -> oxcf . noise_sensitivity == 4 ) vp8_yv12_copy_frame ( cpi -> Source , & cpi -> denoiser . yv12_last_source ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int netlink_recvmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct scm_cookie scm ; struct sock * sk = sock -> sk ; struct netlink_sock * nlk = nlk_sk ( sk ) ; int noblock = flags & MSG_DONTWAIT ; size_t copied ; struct sk_buff * skb , * data_skb ; int err , ret ; if ( flags & MSG_OOB ) return - EOPNOTSUPP ; copied = 0 ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( skb == NULL ) goto out ; data_skb = skb ; # ifdef CONFIG_COMPAT_NETLINK_MESSAGES if ( unlikely ( skb_shinfo ( skb ) -> frag_list ) ) { if ( flags & MSG_CMSG_COMPAT ) data_skb = skb_shinfo ( skb ) -> frag_list ; } # endif <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> copied = data_skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( data_skb ) ; err = skb_copy_datagram_iovec ( data_skb , 0 , msg -> msg_iov , copied ) ; if ( msg -> msg_name ) { struct sockaddr_nl * addr = ( struct sockaddr_nl * ) msg -> msg_name ; addr -> nl_family = AF_NETLINK ; addr -> nl_pad = 0 ; addr -> nl_pid = NETLINK_CB ( skb ) . portid ; addr -> nl_groups = netlink_group_mask ( NETLINK_CB ( skb ) . dst_group ) ; msg -> msg_namelen = sizeof ( * addr ) ; } if ( nlk -> flags & NETLINK_RECV_PKTINFO ) netlink_cmsg_recv_pktinfo ( msg , skb ) ; if ( NULL == siocb -> scm ) { memset ( & scm , 0 , sizeof ( scm ) ) ; siocb -> scm = & scm ; } siocb -> scm -> creds = * NETLINK_CREDS ( skb ) ; if ( flags & MSG_TRUNC ) copied = data_skb -> len ; skb_free_datagram ( sk , skb ) ; if ( nlk -> cb_running && atomic_read ( & sk -> sk_rmem_alloc ) <= sk -> sk_rcvbuf / 2 ) { ret = netlink_dump ( sk ) ; if ( ret ) { sk -> sk_err = ret ; sk -> sk_error_report ( sk ) ; } } scm_recv ( sock , msg , siocb -> scm , flags ) ; out : netlink_rcv_wake ( sk ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } # endif <S2SV_ModEnd> copied = data_skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9388\n\n```\nCWE-000 static int ras_putdatastd ( jas_stream_t * out , ras_hdr_t * hdr , jas_image_t * image , int numcmpts , int * cmpts ) { int rowsize ; int pad ; unsigned int z ; int nz ; int c ; int x ; int y ; int v ; jas_matrix_t * data [ 3 ] ; int i ; <S2SV_StartBug> for ( i = 0 ; i < numcmpts ; ++ i ) { <S2SV_EndBug> <S2SV_StartBug> data [ i ] = jas_matrix_create ( jas_image_height ( image ) , jas_image_width ( image ) ) ; <S2SV_EndBug> assert ( data [ i ] ) ; } rowsize = RAS_ROWSIZE ( hdr ) ; pad = rowsize - ( hdr -> width * hdr -> depth + 7 ) / 8 ; hdr -> length = hdr -> height * rowsize ; for ( y = 0 ; y < hdr -> height ; y ++ ) { for ( i = 0 ; i < numcmpts ; ++ i ) { if ( jas_image_readcmpt ( image , cmpts [ i ] , 0 , y , jas_image_width ( image ) , 1 , data [ i ] ) ) { <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } } z = 0 ; nz = 0 ; for ( x = 0 ; x < hdr -> width ; x ++ ) { z <<= hdr -> depth ; if ( RAS_ISRGB ( hdr ) ) { v = RAS_RED ( ( jas_matrix_getv ( data [ 0 ] , x ) ) ) | RAS_GREEN ( ( jas_matrix_getv ( data [ 1 ] , x ) ) ) | RAS_BLUE ( ( jas_matrix_getv ( data [ 2 ] , x ) ) ) ; } else { v = ( jas_matrix_getv ( data [ 0 ] , x ) ) ; } z |= v & RAS_ONES ( hdr -> depth ) ; nz += hdr -> depth ; while ( nz >= 8 ) { c = ( z >> ( nz - 8 ) ) & 0xff ; if ( jas_stream_putc ( out , c ) == EOF ) { <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } <S2SV_StartBug> nz -= 8 ; <S2SV_EndBug> z &= RAS_ONES ( nz ) ; } } if ( nz > 0 ) { c = ( z >> ( 8 - nz ) ) & RAS_ONES ( nz ) ; if ( jas_stream_putc ( out , c ) == EOF ) { return - 1 ; } } if ( pad % 2 ) { if ( jas_stream_putc ( out , 0 ) == EOF ) { return - 1 ; } } } for ( i = 0 ; i < numcmpts ; ++ i ) { jas_matrix_destroy ( data [ i ] ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; assert ( numcmpts <= 3 ) ; for ( i = 0 ; i < 3 ; ++ i ) { data [ i ] = 0 ; } <S2SV_ModStart> i ) { if ( ! ( <S2SV_ModStart> image ) ) ) ) { goto error ; } <S2SV_ModEnd> } rowsize = <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } } <S2SV_ModStart> EOF ) { goto error ; } nz -= 8 ; z &= RAS_ONES ( nz ) ; } } if ( nz > 0 ) { c = ( z >> ( 8 - nz ) ) & RAS_ONES ( nz ) ; if ( jas_stream_putc ( out , c ) == EOF ) { goto error ; } } if ( pad % 2 ) { if ( jas_stream_putc ( out , 0 ) == EOF ) { goto error ; } } } for ( i = 0 ; i < numcmpts ; ++ i ) { jas_matrix_destroy ( data [ i ] ) ; data [ i ] = 0 ; } return 0 ; error : for ( i = 0 ; i < numcmpts ; ++ i ) { if ( data [ i ] ) { jas_matrix_destroy ( data [ i ] ) ; } } <S2SV_ModStart> 1 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5847\n\n```\nCWE-125 static GstFlowReturn gst_asf_demux_process_ext_content_desc ( GstASFDemux * demux , guint8 * data , guint64 size ) { GstTagList * taglist ; guint16 blockcount , i ; gboolean content3D = FALSE ; struct { const gchar * interleave_name ; GstASF3DMode interleaving_type ; } stereoscopic_layout_map [ ] = { { \"SideBySideRF\" , GST_ASF_3D_SIDE_BY_SIDE_HALF_RL } , { \"SideBySideLF\" , GST_ASF_3D_SIDE_BY_SIDE_HALF_LR } , { \"OverUnderRT\" , GST_ASF_3D_TOP_AND_BOTTOM_HALF_RL } , { \"OverUnderLT\" , GST_ASF_3D_TOP_AND_BOTTOM_HALF_LR } , { \"DualStream\" , GST_ASF_3D_DUAL_STREAM } } ; GST_INFO_OBJECT ( demux , \"object<S2SV_blank>is<S2SV_blank>an<S2SV_blank>extended<S2SV_blank>content<S2SV_blank>description\" ) ; taglist = gst_tag_list_new_empty ( ) ; if ( size < 2 ) goto not_enough_data ; blockcount = gst_asf_demux_get_uint16 ( & data , & size ) ; for ( i = 1 ; i <= blockcount ; ++ i ) { const gchar * gst_tag_name ; guint16 datatype ; guint16 value_len ; guint16 name_len ; GValue tag_value = { 0 , } ; gsize in , out ; gchar * name ; gchar * name_utf8 = NULL ; gchar * value ; if ( ! gst_asf_demux_get_string ( & name , & name_len , & data , & size ) ) goto not_enough_data ; if ( size < 2 ) { g_free ( name ) ; goto not_enough_data ; } datatype = gst_asf_demux_get_uint16 ( & data , & size ) ; if ( ! gst_asf_demux_get_string ( & value , & value_len , & data , & size ) ) { g_free ( name ) ; goto not_enough_data ; } name_utf8 = g_convert ( name , name_len , \"UTF-8\" , \"UTF-16LE\" , & in , & out , NULL ) ; if ( name_utf8 != NULL ) { GST_DEBUG ( \"Found<S2SV_blank>tag/metadata<S2SV_blank>%s\" , name_utf8 ) ; gst_tag_name = gst_asf_demux_get_gst_tag_from_tag_name ( name_utf8 ) ; GST_DEBUG ( \"gst_tag_name<S2SV_blank>%s\" , GST_STR_NULL ( gst_tag_name ) ) ; switch ( datatype ) { case ASF_DEMUX_DATA_TYPE_UTF16LE_STRING : { gchar * value_utf8 ; value_utf8 = g_convert ( value , value_len , \"UTF-8\" , \"UTF-16LE\" , & in , & out , NULL ) ; if ( value_utf8 != NULL && * value_utf8 != '\\\\0' ) { GST_DEBUG ( \"string<S2SV_blank>value<S2SV_blank>%s\" , value_utf8 ) ; value_utf8 [ out ] = '\\\\0' ; if ( gst_tag_name != NULL ) { if ( strcmp ( gst_tag_name , GST_TAG_DATE_TIME ) == 0 ) { guint year = atoi ( value_utf8 ) ; if ( year > 0 ) { g_value_init ( & tag_value , GST_TYPE_DATE_TIME ) ; g_value_take_boxed ( & tag_value , gst_date_time_new_y ( year ) ) ; } } else if ( strcmp ( gst_tag_name , GST_TAG_GENRE ) == 0 ) { guint id3v1_genre_id ; const gchar * genre_str ; if ( sscanf ( value_utf8 , \"(%u)\" , & id3v1_genre_id ) == 1 && ( ( genre_str = gst_tag_id3_genre_get ( id3v1_genre_id ) ) ) ) { GST_DEBUG ( \"Genre:<S2SV_blank>%s<S2SV_blank>-><S2SV_blank>%s\" , value_utf8 , genre_str ) ; g_free ( value_utf8 ) ; value_utf8 = g_strdup ( genre_str ) ; } } else { GType tag_type ; tag_type = gst_tag_get_type ( gst_tag_name ) ; g_value_init ( & tag_value , tag_type ) ; if ( ! gst_value_deserialize ( & tag_value , value_utf8 ) ) { GValue from_val = { 0 , } ; g_value_init ( & from_val , G_TYPE_STRING ) ; g_value_set_string ( & from_val , value_utf8 ) ; if ( ! g_value_transform ( & from_val , & tag_value ) ) { GST_WARNING_OBJECT ( demux , \"Could<S2SV_blank>not<S2SV_blank>transform<S2SV_blank>string<S2SV_blank>tag<S2SV_blank>to<S2SV_blank>\" \"%s<S2SV_blank>tag<S2SV_blank>type<S2SV_blank>%s\" , gst_tag_name , g_type_name ( tag_type ) ) ; g_value_unset ( & tag_value ) ; } g_value_unset ( & from_val ) ; } } } else { GST_DEBUG ( \"Setting<S2SV_blank>metadata\" ) ; g_value_init ( & tag_value , G_TYPE_STRING ) ; g_value_set_string ( & tag_value , value_utf8 ) ; if ( content3D ) { guint i ; if ( strncmp ( \"StereoscopicLayout\" , name_utf8 , strlen ( name_utf8 ) ) == 0 ) { for ( i = 0 ; i < G_N_ELEMENTS ( stereoscopic_layout_map ) ; i ++ ) { if ( g_str_equal ( stereoscopic_layout_map [ i ] . interleave_name , value_utf8 ) ) { demux -> asf_3D_mode = stereoscopic_layout_map [ i ] . interleaving_type ; GST_INFO ( \"find<S2SV_blank>interleave<S2SV_blank>type<S2SV_blank>%u\" , demux -> asf_3D_mode ) ; } } } GST_INFO_OBJECT ( demux , \"3d<S2SV_blank>type<S2SV_blank>is<S2SV_blank>%u\" , demux -> asf_3D_mode ) ; } else { demux -> asf_3D_mode = GST_ASF_3D_NONE ; GST_INFO_OBJECT ( demux , \"None<S2SV_blank>3d<S2SV_blank>type\" ) ; } } } else if ( value_utf8 == NULL ) { GST_WARNING ( \"Failed<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>string<S2SV_blank>value<S2SV_blank>to<S2SV_blank>UTF8,<S2SV_blank>skipping\" ) ; } else { GST_DEBUG ( \"Skipping<S2SV_blank>empty<S2SV_blank>string<S2SV_blank>value<S2SV_blank>for<S2SV_blank>%s\" , GST_STR_NULL ( gst_tag_name ) ) ; } g_free ( value_utf8 ) ; break ; } case ASF_DEMUX_DATA_TYPE_BYTE_ARRAY : { if ( gst_tag_name ) { if ( ! g_str_equal ( gst_tag_name , GST_TAG_IMAGE ) ) { GST_FIXME ( \"Unhandled<S2SV_blank>byte<S2SV_blank>array<S2SV_blank>tag<S2SV_blank>%s\" , GST_STR_NULL ( gst_tag_name ) ) ; break ; } else { asf_demux_parse_picture_tag ( taglist , ( guint8 * ) value , value_len ) ; } } break ; } case ASF_DEMUX_DATA_TYPE_DWORD : { <S2SV_StartBug> guint uint_val = GST_READ_UINT32_LE ( value ) ; <S2SV_EndBug> g_value_init ( & tag_value , G_TYPE_UINT ) ; if ( ! strcmp ( name_utf8 , \"WM/Track\" ) ) ++ uint_val ; g_value_set_uint ( & tag_value , uint_val ) ; break ; } case ASF_DEMUX_DATA_TYPE_BOOL : { <S2SV_StartBug> gboolean bool_val = GST_READ_UINT32_LE ( value ) ; <S2SV_EndBug> if ( strncmp ( \"Stereoscopic\" , name_utf8 , strlen ( name_utf8 ) ) == 0 ) { if ( bool_val ) { GST_INFO_OBJECT ( demux , \"This<S2SV_blank>is<S2SV_blank>3D<S2SV_blank>contents\" ) ; content3D = TRUE ; } else { GST_INFO_OBJECT ( demux , \"This<S2SV_blank>is<S2SV_blank>not<S2SV_blank>3D<S2SV_blank>contenst\" ) ; content3D = FALSE ; } } break ; } default : { GST_DEBUG ( \"Skipping<S2SV_blank>tag<S2SV_blank>%s<S2SV_blank>of<S2SV_blank>type<S2SV_blank>%d\" , gst_tag_name , datatype ) ; break ; } } if ( G_IS_VALUE ( & tag_value ) ) { if ( gst_tag_name ) { GstTagMergeMode merge_mode = GST_TAG_MERGE_APPEND ; if ( strcmp ( name_utf8 , \"WM/TrackNumber\" ) == 0 ) merge_mode = GST_TAG_MERGE_REPLACE ; gst_tag_list_add_values ( taglist , merge_mode , gst_tag_name , & tag_value , NULL ) ; } else { GST_DEBUG ( \"Setting<S2SV_blank>global<S2SV_blank>metadata<S2SV_blank>%s\" , name_utf8 ) ; gst_structure_set_value ( demux -> global_metadata , name_utf8 , & tag_value ) ; } g_value_unset ( & tag_value ) ; } } g_free ( name ) ; g_free ( value ) ; g_free ( name_utf8 ) ; } gst_asf_demux_add_global_tags ( demux , taglist ) ; return GST_FLOW_OK ; not_enough_data : { GST_WARNING ( \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>data<S2SV_blank>parsing<S2SV_blank>ext<S2SV_blank>content<S2SV_blank>desc<S2SV_blank>object\" ) ; gst_tag_list_unref ( taglist ) ; return GST_FLOW_OK ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { guint uint_val ; if ( value_len < 4 ) break ; uint_val <S2SV_ModStart> { gboolean bool_val ; if ( value_len < 4 ) break ; bool_val\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0310\n\n```\nCWE-119 int cipso_v4_validate ( const struct sk_buff * skb , unsigned char * * option ) { unsigned char * opt = * option ; unsigned char * tag ; unsigned char opt_iter ; unsigned char err_offset = 0 ; u8 opt_len ; u8 tag_len ; struct cipso_v4_doi * doi_def = NULL ; u32 tag_iter ; opt_len = opt [ 1 ] ; if ( opt_len < 8 ) { err_offset = 1 ; goto validate_return ; } rcu_read_lock ( ) ; doi_def = cipso_v4_doi_search ( get_unaligned_be32 ( & opt [ 2 ] ) ) ; if ( doi_def == NULL ) { err_offset = 2 ; goto validate_return_locked ; } opt_iter = CIPSO_V4_HDR_LEN ; tag = opt + opt_iter ; while ( opt_iter < opt_len ) { for ( tag_iter = 0 ; doi_def -> tags [ tag_iter ] != tag [ 0 ] ; ) if ( doi_def -> tags [ tag_iter ] == CIPSO_V4_TAG_INVALID || ++ tag_iter == CIPSO_V4_TAG_MAXCNT ) { err_offset = opt_iter ; goto validate_return_locked ; } tag_len = tag [ 1 ] ; if ( tag_len > ( opt_len - opt_iter ) ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } switch ( tag [ 0 ] ) { case CIPSO_V4_TAG_RBITMAP : if ( tag_len < CIPSO_V4_TAG_RBM_BLEN ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } if ( cipso_v4_rbm_strictvalid ) { if ( cipso_v4_map_lvl_valid ( doi_def , tag [ 3 ] ) < 0 ) { err_offset = opt_iter + 3 ; goto validate_return_locked ; } if ( tag_len > CIPSO_V4_TAG_RBM_BLEN && cipso_v4_map_cat_rbm_valid ( doi_def , & tag [ 4 ] , tag_len - 4 ) < 0 ) { err_offset = opt_iter + 4 ; goto validate_return_locked ; } } break ; case CIPSO_V4_TAG_ENUM : if ( tag_len < CIPSO_V4_TAG_ENUM_BLEN ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } if ( cipso_v4_map_lvl_valid ( doi_def , tag [ 3 ] ) < 0 ) { err_offset = opt_iter + 3 ; goto validate_return_locked ; } if ( tag_len > CIPSO_V4_TAG_ENUM_BLEN && cipso_v4_map_cat_enum_valid ( doi_def , & tag [ 4 ] , tag_len - 4 ) < 0 ) { err_offset = opt_iter + 4 ; goto validate_return_locked ; } break ; case CIPSO_V4_TAG_RANGE : if ( tag_len < CIPSO_V4_TAG_RNG_BLEN ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } if ( cipso_v4_map_lvl_valid ( doi_def , tag [ 3 ] ) < 0 ) { err_offset = opt_iter + 3 ; goto validate_return_locked ; } if ( tag_len > CIPSO_V4_TAG_RNG_BLEN && cipso_v4_map_cat_rng_valid ( doi_def , & tag [ 4 ] , tag_len - 4 ) < 0 ) { err_offset = opt_iter + 4 ; goto validate_return_locked ; } break ; case CIPSO_V4_TAG_LOCAL : <S2SV_StartBug> if ( ! ( skb -> dev -> flags & IFF_LOOPBACK ) ) { <S2SV_EndBug> err_offset = opt_iter ; goto validate_return_locked ; } if ( tag_len != CIPSO_V4_TAG_LOC_BLEN ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } break ; default : err_offset = opt_iter ; goto validate_return_locked ; } tag += tag_len ; opt_iter += tag_len ; } validate_return_locked : rcu_read_unlock ( ) ; validate_return : * option = opt + err_offset ; return err_offset ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( skb == NULL ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4483\n\n```\nCWE-189 void * ipc_rcu_alloc ( int size ) { void * out ; if ( rcu_use_vmalloc ( size ) ) { out = vmalloc ( HDRLEN_VMALLOC + size ) ; <S2SV_StartBug> if ( out ) { <S2SV_EndBug> out += HDRLEN_VMALLOC ; container_of ( out , struct ipc_rcu_hdr , data ) -> is_vmalloc = 1 ; <S2SV_StartBug> container_of ( out , struct ipc_rcu_hdr , data ) -> refcount = 1 ; <S2SV_EndBug> } } else { out = kmalloc ( HDRLEN_KMALLOC + size , GFP_KERNEL ) ; <S2SV_StartBug> if ( out ) { <S2SV_EndBug> out += HDRLEN_KMALLOC ; container_of ( out , struct ipc_rcu_hdr , data ) -> is_vmalloc = 0 ; <S2SV_StartBug> container_of ( out , struct ipc_rcu_hdr , data ) -> refcount = 1 ; <S2SV_EndBug> } } return out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! out ) goto done ; <S2SV_ModEnd> out += HDRLEN_VMALLOC <S2SV_ModStart> = 1 ; <S2SV_ModEnd> } else { <S2SV_ModStart> ; if ( ! out ) goto done ; <S2SV_ModEnd> out += HDRLEN_KMALLOC <S2SV_ModStart> = 0 ; } atomic_set ( & <S2SV_ModStart> ) -> refcount , 1 ) ; done : <S2SV_ModEnd> return out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6429\n\n```\nCWE-119 int main ( int argc , char * argv [ ] ) { int i , fd , swapped , pkthdrlen , ret , optct , backwards , caplentoobig ; struct pcap_file_header pcap_fh ; struct pcap_pkthdr pcap_ph ; struct pcap_sf_patched_pkthdr pcap_patched_ph ; char buf [ 10000 ] ; struct stat statinfo ; uint64_t pktcnt ; uint32_t readword ; int32_t last_sec , last_usec , caplen ; optct = optionProcess ( & tcpcapinfoOptions , argc , argv ) ; argc -= optct ; argv += optct ; # ifdef DEBUG if ( HAVE_OPT ( DBUG ) ) debug = OPT_VALUE_DBUG ; # endif for ( i = 0 ; i < argc ; i ++ ) { dbgx ( 1 , \"processing:<S2SV_blank><S2SV_blank>%s\\\\n\" , argv [ i ] ) ; if ( ( fd = open ( argv [ i ] , O_RDONLY ) ) < 0 ) errx ( - 1 , \"Error<S2SV_blank>opening<S2SV_blank>file<S2SV_blank>%s:<S2SV_blank>%s\" , argv [ i ] , strerror ( errno ) ) ; if ( fstat ( fd , & statinfo ) < 0 ) errx ( - 1 , \"Error<S2SV_blank>getting<S2SV_blank>file<S2SV_blank>stat<S2SV_blank>info<S2SV_blank>%s:<S2SV_blank>%s\" , argv [ i ] , strerror ( errno ) ) ; printf ( \"file<S2SV_blank>size<S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%\" PRIu64 \"<S2SV_blank>bytes\\\\n\" , ( uint64_t ) statinfo . st_size ) ; if ( ( ret = read ( fd , & buf , sizeof ( pcap_fh ) ) ) != sizeof ( pcap_fh ) ) errx ( - 1 , \"File<S2SV_blank>too<S2SV_blank>small.<S2SV_blank><S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>pcap_file_header<S2SV_blank>from<S2SV_blank>%s\" , argv [ i ] ) ; dbgx ( 3 , \"Read<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>for<S2SV_blank>file<S2SV_blank>header\" , ret ) ; swapped = 0 ; memcpy ( & pcap_fh , & buf , sizeof ( pcap_fh ) ) ; pkthdrlen = 16 ; switch ( pcap_fh . magic ) { case TCPDUMP_MAGIC : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(tcpdump)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( TCPDUMP_MAGIC ) : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(tcpdump/swapped)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; case KUZNETZOV_TCPDUMP_MAGIC : pkthdrlen = sizeof ( pcap_patched_ph ) ; printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Kuznetzov)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( KUZNETZOV_TCPDUMP_MAGIC ) : pkthdrlen = sizeof ( pcap_patched_ph ) ; printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Kuznetzov/swapped)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; case FMESQUITA_TCPDUMP_MAGIC : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Fmesquita)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( FMESQUITA_TCPDUMP_MAGIC ) : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Fmesquita)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; case NAVTEL_TCPDUMP_MAGIC : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Navtel)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( NAVTEL_TCPDUMP_MAGIC ) : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Navtel/swapped)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; case NSEC_TCPDUMP_MAGIC : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Nsec)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( NSEC_TCPDUMP_MAGIC ) : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Nsec/swapped)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; default : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(unknown)\\\\n\" , pcap_fh . magic ) ; } if ( swapped == 1 ) { pcap_fh . version_major = SWAPSHORT ( pcap_fh . version_major ) ; pcap_fh . version_minor = SWAPSHORT ( pcap_fh . version_minor ) ; pcap_fh . thiszone = SWAPLONG ( pcap_fh . thiszone ) ; pcap_fh . sigfigs = SWAPLONG ( pcap_fh . sigfigs ) ; pcap_fh . snaplen = SWAPLONG ( pcap_fh . snaplen ) ; pcap_fh . linktype = SWAPLONG ( pcap_fh . linktype ) ; } printf ( \"version<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%hu.%hu\\\\n\" , pcap_fh . version_major , pcap_fh . version_minor ) ; printf ( \"thiszone<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"\\\\n\" , pcap_fh . thiszone ) ; printf ( \"sigfigs<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"\\\\n\" , pcap_fh . sigfigs ) ; printf ( \"snaplen<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%\" PRIu32 \"\\\\n\" , pcap_fh . snaplen ) ; printf ( \"linktype<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"\\\\n\" , pcap_fh . linktype ) ; if ( pcap_fh . version_major != 2 && pcap_fh . version_minor != 4 ) { printf ( \"Sorry,<S2SV_blank>we<S2SV_blank>only<S2SV_blank>support<S2SV_blank>file<S2SV_blank>format<S2SV_blank>version<S2SV_blank>2.4\\\\n\" ) ; close ( fd ) ; continue ; } dbgx ( 5 , \"Packet<S2SV_blank>header<S2SV_blank>len:<S2SV_blank>%d\" , pkthdrlen ) ; if ( pkthdrlen == 24 ) { printf ( \"Packet\\\\tOrigLen\\\\t\\\\tCaplen\\\\t\\\\tTimestamp\\\\t\\\\tIndex\\\\tProto\\\\tPktType\\\\tPktCsum\\\\tNote\\\\n\" ) ; } else { printf ( \"Packet\\\\tOrigLen\\\\t\\\\tCaplen\\\\t\\\\tTimestamp\\\\tCsum\\\\tNote\\\\n\" ) ; } pktcnt = 0 ; last_sec = 0 ; last_usec = 0 ; while ( ( ret = read ( fd , & buf , pkthdrlen ) ) == pkthdrlen ) { pktcnt ++ ; backwards = 0 ; caplentoobig = 0 ; dbgx ( 3 , \"Read<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>for<S2SV_blank>packet<S2SV_blank>%\" PRIu64 \"<S2SV_blank>header\" , ret , pktcnt ) ; memset ( & pcap_ph , 0 , sizeof ( pcap_ph ) ) ; if ( pkthdrlen == sizeof ( pcap_patched_ph ) ) { memcpy ( & pcap_patched_ph , & buf , sizeof ( pcap_patched_ph ) ) ; if ( swapped == 1 ) { dbg ( 3 , \"Swapping<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>bytes...\" ) ; pcap_patched_ph . caplen = SWAPLONG ( pcap_patched_ph . caplen ) ; pcap_patched_ph . len = SWAPLONG ( pcap_patched_ph . len ) ; pcap_patched_ph . ts . tv_sec = SWAPLONG ( pcap_patched_ph . ts . tv_sec ) ; pcap_patched_ph . ts . tv_usec = SWAPLONG ( pcap_patched_ph . ts . tv_usec ) ; pcap_patched_ph . index = SWAPLONG ( pcap_patched_ph . index ) ; pcap_patched_ph . protocol = SWAPSHORT ( pcap_patched_ph . protocol ) ; } printf ( \"%\" PRIu64 \"\\\\t%4\" PRIu32 \"\\\\t\\\\t%4\" PRIu32 \"\\\\t\\\\t%\" PRIx32 \".%\" PRIx32 \"\\\\t\\\\t%4\" PRIu32 \"\\\\t%4hu\\\\t%4hhu\" , pktcnt , pcap_patched_ph . len , pcap_patched_ph . caplen , pcap_patched_ph . ts . tv_sec , pcap_patched_ph . ts . tv_usec , pcap_patched_ph . index , pcap_patched_ph . protocol , pcap_patched_ph . pkt_type ) ; if ( pcap_fh . snaplen < pcap_patched_ph . caplen ) { caplentoobig = 1 ; } caplen = pcap_patched_ph . caplen ; } else { memcpy ( & readword , buf , 4 ) ; pcap_ph . ts . tv_sec = readword ; memcpy ( & readword , & buf [ 4 ] , 4 ) ; pcap_ph . ts . tv_usec = readword ; memcpy ( & pcap_ph . caplen , & buf [ 8 ] , 4 ) ; memcpy ( & pcap_ph . len , & buf [ 12 ] , 4 ) ; if ( swapped == 1 ) { dbg ( 3 , \"Swapping<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>bytes...\" ) ; pcap_ph . caplen = SWAPLONG ( pcap_ph . caplen ) ; pcap_ph . len = SWAPLONG ( pcap_ph . len ) ; pcap_ph . ts . tv_sec = SWAPLONG ( pcap_ph . ts . tv_sec ) ; pcap_ph . ts . tv_usec = SWAPLONG ( pcap_ph . ts . tv_usec ) ; } printf ( \"%\" PRIu64 \"\\\\t%4\" PRIu32 \"\\\\t\\\\t%4\" PRIu32 \"\\\\t\\\\t%\" PRIx32 \".%\" PRIx32 , pktcnt , pcap_ph . len , pcap_ph . caplen , ( unsigned int ) pcap_ph . ts . tv_sec , ( unsigned int ) pcap_ph . ts . tv_usec ) ; if ( pcap_fh . snaplen < pcap_ph . caplen ) { caplentoobig = 1 ; } caplen = pcap_ph . caplen ; } <S2SV_StartBug> if ( last_sec > 0 && last_usec > 0 ) { <S2SV_EndBug> if ( ( pcap_ph . ts . tv_sec == last_sec ) ? ( pcap_ph . ts . tv_usec < last_usec ) : ( pcap_ph . ts . tv_sec < last_sec ) ) { backwards = 1 ; } } if ( pkthdrlen == sizeof ( pcap_patched_ph ) ) { last_sec = pcap_patched_ph . ts . tv_sec ; last_usec = pcap_patched_ph . ts . tv_usec ; } else { last_sec = pcap_ph . ts . tv_sec ; last_usec = pcap_ph . ts . tv_usec ; } if ( ( ret = read ( fd , & buf , caplen ) ) != caplen ) { if ( ret < 0 ) { printf ( \"Error<S2SV_blank>reading<S2SV_blank>file:<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , argv [ i ] , strerror ( errno ) ) ; } else { printf ( \"File<S2SV_blank>truncated!<S2SV_blank><S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>jump<S2SV_blank>to<S2SV_blank>next<S2SV_blank>packet.\\\\n\" ) ; } close ( fd ) ; <S2SV_StartBug> continue ; <S2SV_EndBug> } printf ( \"\\\\t%x\\\\t\" , do_checksum_math ( ( u_int16_t * ) buf , caplen ) ) ; if ( ! backwards && ! caplentoobig ) { printf ( \"OK\\\\n\" ) ; } else if ( backwards && ! caplentoobig ) { printf ( \"BAD_TS\\\\n\" ) ; } else if ( caplentoobig && ! backwards ) { printf ( \"TOOBIG\\\\n\" ) ; } else if ( backwards && caplentoobig ) { printf ( \"BAD_TS|TOOBIG\" ) ; } } } exit ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( caplentoobig ) { printf ( \"\\\\n\\\\nCapture<S2SV_blank>file<S2SV_blank>appears<S2SV_blank>to<S2SV_blank>be<S2SV_blank>damaged<S2SV_blank>or<S2SV_blank>corrupt.\\\\n\" \"Contains<S2SV_blank>packet<S2SV_blank>of<S2SV_blank>size<S2SV_blank>%u,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>snap<S2SV_blank>length<S2SV_blank>%u\\\\n\" , caplen , pcap_fh . snaplen ) ; close ( fd ) ; break ; } if ( <S2SV_ModStart> fd ) ; break <S2SV_ModEnd> ; } printf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int mif_validate ( jas_stream_t * in ) { <S2SV_StartBug> uchar buf [ MIF_MAGICLEN ] ; <S2SV_EndBug> uint_fast32_t magic ; int i ; int n ; assert ( JAS_STREAM_MAXPUTBACK >= MIF_MAGICLEN ) ; if ( ( n = jas_stream_read ( in , buf , MIF_MAGICLEN ) ) < 0 ) { return - 1 ; } for ( i = n - 1 ; i >= 0 ; -- i ) { if ( jas_stream_ungetc ( in , buf [ i ] ) == EOF ) { return - 1 ; } } if ( n < MIF_MAGICLEN ) { return - 1 ; } magic = ( JAS_CAST ( uint_fast32_t , buf [ 0 ] ) << 24 ) | ( JAS_CAST ( uint_fast32_t , buf [ 1 ] ) << 16 ) | ( JAS_CAST ( uint_fast32_t , buf [ 2 ] ) << 8 ) | buf [ 3 ] ; if ( magic != MIF_MAGIC ) { return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in ) { jas_uchar <S2SV_ModEnd> buf [ MIF_MAGICLEN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void write_selected_tx_size ( const VP9_COMP * cpi , <S2SV_EndBug> TX_SIZE tx_size , BLOCK_SIZE bsize , <S2SV_StartBug> vp9_writer * w ) { <S2SV_EndBug> const TX_SIZE max_tx_size = max_txsize_lookup [ bsize ] ; <S2SV_StartBug> const MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> const vp9_prob * const tx_probs = get_tx_probs2 ( max_tx_size , xd , <S2SV_StartBug> & cpi -> common . fc . tx_probs ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_write ( w , tx_size != TX_4X4 , tx_probs [ 0 ] ) ; <S2SV_EndBug> if ( tx_size != TX_4X4 && max_tx_size >= TX_16X16 ) { <S2SV_StartBug> vp9_write ( w , tx_size != TX_8X8 , tx_probs [ 1 ] ) ; <S2SV_EndBug> if ( tx_size != TX_8X8 && max_tx_size >= TX_32X32 ) <S2SV_StartBug> vp9_write ( w , tx_size != TX_16X16 , tx_probs [ 2 ] ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> write_selected_tx_size ( const VP9_COMMON * cm , const MACROBLOCKD * xd , vpx_writer <S2SV_ModEnd> * w ) <S2SV_ModStart> w ) { TX_SIZE tx_size = xd -> mi [ 0 ] -> mbmi . tx_size ; BLOCK_SIZE bsize = xd -> mi [ 0 ] -> mbmi . sb_type ; <S2SV_ModStart> ] ; const vpx_prob <S2SV_ModEnd> * const tx_probs <S2SV_ModStart> xd , & cm -> fc -> <S2SV_ModEnd> tx_probs ) ; <S2SV_ModStart> tx_probs ) ; vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> TX_16X16 ) { vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> >= TX_32X32 ) vpx_write <S2SV_ModEnd> ( w ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_source_var_based_partition ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_StartBug> MODE_INFO * * mi_8x8 , <S2SV_EndBug> int mi_row , int mi_col ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * x = & cpi -> mb ; <S2SV_EndBug> const int mis = cm -> mi_stride ; <S2SV_StartBug> int row8x8_remaining = tile -> mi_row_end - mi_row ; <S2SV_EndBug> <S2SV_StartBug> int col8x8_remaining = tile -> mi_col_end - mi_col ; <S2SV_EndBug> <S2SV_StartBug> int r , c ; <S2SV_EndBug> <S2SV_StartBug> MODE_INFO * mi_upper_left = cm -> mi + mi_row * mis + mi_col ; <S2SV_EndBug> assert ( ( row8x8_remaining > 0 ) && ( col8x8_remaining > 0 ) ) ; if ( ( col8x8_remaining >= MI_BLOCK_SIZE ) && ( row8x8_remaining >= MI_BLOCK_SIZE ) ) { <S2SV_StartBug> const int src_stride = x -> plane [ 0 ] . src . stride ; <S2SV_EndBug> <S2SV_StartBug> const int pre_stride = cpi -> Last_Source -> y_stride ; <S2SV_EndBug> const uint8_t * src = x -> plane [ 0 ] . src . buf ; const int pre_offset = ( mi_row * MI_SIZE ) * pre_stride + ( mi_col * MI_SIZE ) ; <S2SV_StartBug> const uint8_t * pre_src = cpi -> Last_Source -> y_buffer + pre_offset ; <S2SV_EndBug> const int thr_32x32 = cpi -> sf . source_var_thresh ; const int thr_64x64 = thr_32x32 << 1 ; int i , j ; int index ; diff d32 [ 4 ] ; int use16x16 = 0 ; <S2SV_StartBug> for ( i = 0 ; i < 4 ; i ++ ) { <S2SV_EndBug> <S2SV_StartBug> diff d16 [ 4 ] ; <S2SV_EndBug> for ( j = 0 ; j < 4 ; j ++ ) { int b_mi_row = coord_lookup [ i * 4 + j ] . row ; int b_mi_col = coord_lookup [ i * 4 + j ] . col ; int b_offset = b_mi_row * MI_SIZE * src_stride + b_mi_col * MI_SIZE ; vp9_get_sse_sum_16x16 ( src + b_offset , src_stride , pre_src + b_offset , <S2SV_StartBug> pre_stride , & d16 [ j ] . sse , & d16 [ j ] . sum ) ; <S2SV_EndBug> d16 [ j ] . var = d16 [ j ] . sse - <S2SV_StartBug> ( ( ( uint32_t ) d16 [ j ] . sum * d16 [ j ] . sum ) >> 8 ) ; <S2SV_EndBug> index = b_mi_row * mis + b_mi_col ; mi_8x8 [ index ] = mi_upper_left + index ; mi_8x8 [ index ] -> mbmi . sb_type = BLOCK_16X16 ; } if ( d16 [ 0 ] . var < thr_32x32 && d16 [ 1 ] . var < thr_32x32 && d16 [ 2 ] . var < thr_32x32 && d16 [ 3 ] . var < thr_32x32 ) { d32 [ i ] . sse = d16 [ 0 ] . sse ; d32 [ i ] . sum = d16 [ 0 ] . sum ; for ( j = 1 ; j < 4 ; j ++ ) { d32 [ i ] . sse += d16 [ j ] . sse ; d32 [ i ] . sum += d16 [ j ] . sum ; } d32 [ i ] . var = d32 [ i ] . sse - ( ( ( int64_t ) d32 [ i ] . sum * d32 [ i ] . sum ) >> 10 ) ; index = coord_lookup [ i * 4 ] . row * mis + coord_lookup [ i * 4 ] . col ; mi_8x8 [ index ] = mi_upper_left + index ; mi_8x8 [ index ] -> mbmi . sb_type = BLOCK_32X32 ; <S2SV_StartBug> if ( ! ( ( cm -> current_video_frame - 1 ) % <S2SV_EndBug> cpi -> sf . search_type_check_frequency ) ) cpi -> use_large_partition_rate += 1 ; } else { <S2SV_StartBug> use16x16 = 1 ; <S2SV_EndBug> } } if ( ! use16x16 ) { if ( d32 [ 0 ] . var < thr_64x64 && d32 [ 1 ] . var < thr_64x64 && d32 [ 2 ] . var < thr_64x64 && d32 [ 3 ] . var < thr_64x64 ) { mi_8x8 [ 0 ] = mi_upper_left ; mi_8x8 [ 0 ] -> mbmi . sb_type = BLOCK_64X64 ; } } } else { BLOCK_SIZE bsize = BLOCK_16X16 ; int bh = num_8x8_blocks_high_lookup [ bsize ] ; int bw = num_8x8_blocks_wide_lookup [ bsize ] ; for ( r = 0 ; r < MI_BLOCK_SIZE ; r += bh ) { for ( c = 0 ; c < MI_BLOCK_SIZE ; c += bw ) { int index = r * mis + c ; bsize = find_partition_size ( bsize , ( row8x8_remaining - r ) , ( col8x8_remaining - c ) , & bh , & bw ) ; mi_8x8 [ index ] = mi_upper_left + index ; mi_8x8 [ index ] -> mbmi . sb_type = bsize ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const tile , MACROBLOCK * const x , <S2SV_ModStart> -> common ; <S2SV_ModEnd> const int mis <S2SV_ModStart> -> mi_stride ; const <S2SV_ModStart> - mi_row ; const <S2SV_ModStart> - mi_col ; <S2SV_ModEnd> MODE_INFO * mi_upper_left <S2SV_ModStart> mis + mi_col ; vp9_setup_src_planes ( x , cpi -> Source , mi_row , mi_col ) <S2SV_ModStart> ) ) { int i , j ; int index ; diff d32 [ 4 ] ; const int offset = ( mi_row >> 1 ) * cm -> mb_cols + ( mi_col >> 1 ) ; int is_larger_better = 0 ; int use32x32 = 0 ; unsigned int thr <S2SV_ModEnd> = cpi -> <S2SV_ModStart> = cpi -> source_var_thresh ; memset ( d32 , 0 , 4 * sizeof ( diff ) ) ; for ( i = 0 ; i < 4 ; i ++ ) { diff * d16 [ 4 ] ; for ( j = 0 ; j < 4 ; j ++ ) { int b_mi_row = coord_lookup [ i * 4 + j ] . row ; int b_mi_col = coord_lookup [ i * 4 + j ] . col ; int boffset = b_mi_row / 2 * cm -> mb_cols + b_mi_col / 2 ; d16 [ j ] <S2SV_ModEnd> = cpi -> <S2SV_ModStart> = cpi -> source_diff_var + offset + boffset ; index = b_mi_row * mis + b_mi_col ; mi_8x8 [ index ] = mi_upper_left + index ; mi_8x8 [ index ] -> mbmi . sb_type = BLOCK_16X16 ; } is_larger_better = ( d16 [ 0 ] -> var < thr ) && ( d16 [ 1 ] -> var < thr ) && ( d16 [ 2 ] -> var < thr ) && ( d16 [ 3 ] -> var < thr ) ; if ( is_larger_better ) { use32x32 += 1 <S2SV_ModEnd> ; for ( <S2SV_ModStart> ; for ( j = 0 ; j < 4 ; j <S2SV_ModEnd> ++ ) { <S2SV_ModStart> ++ ) { d32 [ i <S2SV_ModEnd> ] . sse <S2SV_ModStart> ] . sse += d16 [ j ] -> sse ; d32 [ i <S2SV_ModEnd> ] . sum <S2SV_ModStart> ] . sum += d16 [ j ] -> sum ; } d32 [ i ] . var = d32 [ i <S2SV_ModEnd> ] . sse <S2SV_ModStart> . sse - <S2SV_ModEnd> ( ( ( <S2SV_ModStart> = BLOCK_32X32 ; } } if ( use32x32 == 4 ) { thr <<= 1 ; is_larger_better = ( d32 [ 0 ] . var < thr ) && ( d32 [ 1 ] . var < thr ) && ( d32 [ 2 ] . var < thr ) && ( d32 [ 3 ] . var < thr ) ; if ( is_larger_better ) { mi_8x8 [ 0 ] = mi_upper_left ; mi_8x8 [ 0 ] -> mbmi . sb_type = BLOCK_64X64 ; } } <S2SV_ModEnd> } else { <S2SV_ModStart> } else { int bh = num_8x8_blocks_high_lookup [ BLOCK_16X16 ] ; int bw = num_8x8_blocks_wide_lookup [ BLOCK_16X16 ] ; set_partial_b64x64_partition ( mi_upper_left , mis , bh , bw , row8x8_remaining , col8x8_remaining , BLOCK_16X16 , mi_8x8 ) ; <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1774\n\n```\nCWE-264 static void chase_port ( struct edgeport_port * port , unsigned long timeout , int flush ) { int baud_rate ; struct tty_struct * tty = tty_port_tty_get ( & port -> port -> port ) ; struct usb_serial * serial = port -> port -> serial ; wait_queue_t wait ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> if ( ! timeout ) timeout = ( HZ * EDGE_CLOSING_WAIT ) / 100 ; spin_lock_irqsave ( & port -> ep_lock , flags ) ; init_waitqueue_entry ( & wait , current ) ; add_wait_queue ( & tty -> write_wait , & wait ) ; for ( ; ; ) { set_current_state ( TASK_INTERRUPTIBLE ) ; if ( kfifo_len ( & port -> write_fifo ) == 0 || timeout == 0 || signal_pending ( current ) || serial -> disconnected ) break ; spin_unlock_irqrestore ( & port -> ep_lock , flags ) ; timeout = schedule_timeout ( timeout ) ; spin_lock_irqsave ( & port -> ep_lock , flags ) ; } set_current_state ( TASK_RUNNING ) ; remove_wait_queue ( & tty -> write_wait , & wait ) ; if ( flush ) kfifo_reset_out ( & port -> write_fifo ) ; spin_unlock_irqrestore ( & port -> ep_lock , flags ) ; tty_kref_put ( tty ) ; timeout += jiffies ; while ( ( long ) ( jiffies - timeout ) < 0 && ! signal_pending ( current ) && ! serial -> disconnected ) { if ( ! tx_active ( port ) ) break ; msleep ( 10 ) ; } if ( serial -> disconnected ) return ; baud_rate = port -> baud_rate ; if ( baud_rate == 0 ) baud_rate = 50 ; msleep ( max ( 1 , DIV_ROUND_UP ( 10000 , baud_rate ) ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned long flags ; if ( ! tty ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4817\n\n```\nCWE-000 <S2SV_StartBug> static void parse_input ( h2o_http2_conn_t * conn ) <S2SV_EndBug> { size_t http2_max_concurrent_requests_per_connection = conn -> super . ctx -> globalconf -> http2 . max_concurrent_requests_per_connection ; int perform_early_exit = 0 ; if ( conn -> num_streams . pull . half_closed + conn -> num_streams . push . half_closed != http2_max_concurrent_requests_per_connection ) perform_early_exit = 1 ; while ( conn -> state < H2O_HTTP2_CONN_STATE_IS_CLOSING && conn -> sock -> input -> size != 0 ) { if ( perform_early_exit == 1 && conn -> num_streams . pull . half_closed + conn -> num_streams . push . half_closed == http2_max_concurrent_requests_per_connection ) goto EarlyExit ; const char * err_desc = NULL ; ssize_t ret = conn -> _read_expect ( conn , ( uint8_t * ) conn -> sock -> input -> bytes , conn -> sock -> input -> size , & err_desc ) ; if ( ret == H2O_HTTP2_ERROR_INCOMPLETE ) { break ; } else if ( ret < 0 ) { if ( ret != H2O_HTTP2_ERROR_PROTOCOL_CLOSE_IMMEDIATELY ) { enqueue_goaway ( conn , ( int ) ret , err_desc != NULL ? ( h2o_iovec_t ) { ( char * ) err_desc , strlen ( err_desc ) } : ( h2o_iovec_t ) { } ) ; } <S2SV_StartBug> close_connection ( conn ) ; <S2SV_EndBug> return ; } h2o_buffer_consume ( & conn -> sock -> input , ret ) ; } if ( ! h2o_socket_is_reading ( conn -> sock ) ) h2o_socket_read_start ( conn -> sock , on_read ) ; <S2SV_StartBug> return ; <S2SV_EndBug> EarlyExit : if ( h2o_socket_is_reading ( conn -> sock ) ) h2o_socket_read_stop ( conn -> sock ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> parse_input ( h2o_http2_conn_t <S2SV_ModStart> ) ; } return <S2SV_ModStart> ( conn ) <S2SV_ModEnd> ; } h2o_buffer_consume <S2SV_ModStart> ) ; return 0 <S2SV_ModStart> sock ) ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0557\n\n```\nCWE-200 IMPEG2D_ERROR_CODES_T impeg2d_vld_decode ( dec_state_t * ps_dec , WORD16 * pi2_outAddr , const UWORD8 * pu1_scan , UWORD8 * pu1_pos , UWORD16 u2_intra_flag , UWORD16 u2_chroma_flag , UWORD16 u2_d_picture , UWORD16 u2_intra_vlc_format , UWORD16 u2_mpeg2 , WORD32 * pi4_num_coeffs ) { UWORD32 u4_sym_len ; UWORD32 u4_decoded_value ; UWORD32 u4_level_first_byte ; WORD32 u4_level ; UWORD32 u4_run , u4_numCoeffs ; UWORD32 u4_buf ; UWORD32 u4_buf_nxt ; UWORD32 u4_offset ; UWORD32 * pu4_buf_aligned ; UWORD32 u4_bits ; stream_t * ps_stream = & ps_dec -> s_bit_stream ; WORD32 u4_pos ; UWORD32 u4_nz_cols ; UWORD32 u4_nz_rows ; * pi4_num_coeffs = 0 ; ps_dec -> u4_non_zero_cols = 0 ; ps_dec -> u4_non_zero_rows = 0 ; u4_nz_cols = ps_dec -> u4_non_zero_cols ; u4_nz_rows = ps_dec -> u4_non_zero_rows ; GET_TEMP_STREAM_DATA ( u4_buf , u4_buf_nxt , u4_offset , pu4_buf_aligned , ps_stream ) if ( u2_intra_flag ) { WORD32 dc_size ; WORD32 dc_diff ; WORD32 maxLen ; WORD32 idx ; maxLen = MPEG2_DCT_DC_SIZE_LEN ; idx = 0 ; if ( u2_chroma_flag != 0 ) { maxLen += 1 ; idx ++ ; } { WORD16 end = 0 ; UWORD32 maxLen_tmp = maxLen ; UWORD16 m_iBit ; IBITS_NXT ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , maxLen ) do { maxLen_tmp -- ; m_iBit = ( UWORD8 ) ( ( u4_bits >> maxLen_tmp ) & 0x1 ) ; end = gai2_impeg2d_dct_dc_size [ idx ] [ end ] [ m_iBit ] ; } while ( end > 0 ) ; dc_size = end + MPEG2_DCT_DC_SIZE_OFFSET ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , ( maxLen - maxLen_tmp ) , pu4_buf_aligned ) } if ( dc_size != 0 ) { UWORD32 u4_bits ; IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , dc_size ) dc_diff = u4_bits ; if ( ( dc_diff & ( 1 << ( dc_size - 1 ) ) ) == 0 ) dc_diff -= ( 1 << dc_size ) - 1 ; } else { dc_diff = 0 ; } pi2_outAddr [ * pi4_num_coeffs ] = dc_diff ; pu1_pos [ * pi4_num_coeffs ] = pu1_scan [ 0 ] ; ( * pi4_num_coeffs ) ++ ; if ( 0 != dc_diff ) { u4_nz_cols |= 0x01 ; u4_nz_rows |= 0x01 ; } u4_numCoeffs = 1 ; } else { UWORD32 u4_bits ; IBITS_NXT ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , 1 ) if ( u4_bits == 1 ) { FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , 1 , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 1 ) if ( u4_bits == 1 ) { pi2_outAddr [ * pi4_num_coeffs ] = - 1 ; } else { pi2_outAddr [ * pi4_num_coeffs ] = 1 ; } pu1_pos [ * pi4_num_coeffs ] = pu1_scan [ 0 ] ; ( * pi4_num_coeffs ) ++ ; u4_numCoeffs = 1 ; u4_nz_cols |= 0x01 ; u4_nz_rows |= 0x01 ; } else { u4_numCoeffs = 0 ; } } if ( 1 == u2_d_picture ) { PUT_TEMP_STREAM_DATA ( u4_buf , u4_buf_nxt , u4_offset , pu4_buf_aligned , ps_stream ) ps_dec -> u4_non_zero_cols = u4_nz_cols ; ps_dec -> u4_non_zero_rows = u4_nz_rows ; return ( ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ) ; } if ( 1 == u2_intra_vlc_format && u2_intra_flag ) { while ( 1 ) { UWORD32 lead_zeros ; WORD16 DecodedValue ; u4_sym_len = 17 ; <S2SV_StartBug> IBITS_NXT ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , u4_sym_len ) <S2SV_EndBug> DecodedValue = gau2_impeg2d_tab_one_1_9 [ u4_bits >> 8 ] ; u4_sym_len = ( DecodedValue & 0xf ) ; u4_level = DecodedValue >> 9 ; if ( 0 != u4_level ) { u4_run = ( ( DecodedValue >> 4 ) & 0x1f ) ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else { if ( DecodedValue == END_OF_BLOCK_ONE ) { u4_sym_len = 4 ; break ; } else { lead_zeros = CLZ ( u4_bits ) - 20 ; if ( 0 != lead_zeros ) { u4_bits = ( u4_bits >> ( 6 - lead_zeros ) ) & 0x001F ; if ( 1 == lead_zeros ) { u4_sym_len = ( ( u4_bits & 0x18 ) >> 3 ) == 2 ? 11 : 10 ; } else { u4_sym_len = 11 + lead_zeros ; } FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) u4_bits = ( ( lead_zeros - 1 ) << 5 ) + u4_bits ; DecodedValue = gau2_impeg2d_tab_one_10_16 [ u4_bits ] ; u4_run = BITS ( DecodedValue , 8 , 4 ) ; u4_level = ( ( WORD16 ) DecodedValue ) >> 9 ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else if ( u2_mpeg2 == 1 ) { u4_sym_len = 6 ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 18 ) u4_decoded_value = u4_bits ; u4_run = ( u4_decoded_value >> 12 ) ; u4_level = ( u4_decoded_value & 0x0FFF ) ; if ( u4_level ) u4_level = ( u4_level - ( ( u4_level & 0x0800 ) << 1 ) ) ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else { u4_sym_len = 6 ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 14 ) u4_decoded_value = u4_bits ; u4_run = ( u4_decoded_value >> 8 ) ; u4_level_first_byte = ( u4_decoded_value & 0x0FF ) ; if ( u4_level_first_byte & 0x7F ) { u4_level = ( u4_level_first_byte - ( ( u4_level_first_byte & 0x80 ) << 1 ) ) ; } else { IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 8 ) u4_level = u4_bits ; u4_level = ( u4_level - ( u4_level_first_byte << 1 ) ) ; } u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } } } u4_nz_cols |= 1 << ( u4_pos & 0x7 ) ; u4_nz_rows |= 1 << ( u4_pos >> 0x3 ) ; if ( u4_numCoeffs > 64 ) { return IMPEG2D_MB_TEX_DECODE_ERR ; } } IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , u4_sym_len ) } else { while ( 1 ) { UWORD32 lead_zeros ; UWORD16 DecodedValue ; u4_sym_len = 17 ; IBITS_NXT ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , u4_sym_len ) <S2SV_StartBug> DecodedValue = gau2_impeg2d_tab_zero_1_9 [ u4_bits >> 8 ] ; <S2SV_EndBug> u4_sym_len = BITS ( DecodedValue , 3 , 0 ) ; u4_level = ( ( WORD16 ) DecodedValue ) >> 9 ; if ( 0 != u4_level ) { u4_run = BITS ( DecodedValue , 8 , 4 ) ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else { if ( DecodedValue == END_OF_BLOCK_ZERO ) { u4_sym_len = 2 ; break ; } else { lead_zeros = CLZ ( u4_bits ) - 20 ; if ( 0 != lead_zeros ) { u4_bits = ( u4_bits >> ( 6 - lead_zeros ) ) & 0x001F ; u4_sym_len = 11 + lead_zeros ; u4_bits = ( ( lead_zeros - 1 ) << 5 ) + u4_bits ; DecodedValue = gau2_impeg2d_tab_zero_10_16 [ u4_bits ] ; u4_run = BITS ( DecodedValue , 8 , 4 ) ; u4_level = ( ( WORD16 ) DecodedValue ) >> 9 ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; if ( 1 == lead_zeros ) u4_sym_len -- ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else if ( u2_mpeg2 == 1 ) { u4_sym_len = 6 ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 18 ) u4_decoded_value = u4_bits ; u4_run = ( u4_decoded_value >> 12 ) ; u4_level = ( u4_decoded_value & 0x0FFF ) ; if ( u4_level ) u4_level = ( u4_level - ( ( u4_level & 0x0800 ) << 1 ) ) ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else { u4_sym_len = 6 ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 14 ) u4_decoded_value = u4_bits ; u4_run = ( u4_decoded_value >> 8 ) ; u4_level_first_byte = ( u4_decoded_value & 0x0FF ) ; if ( u4_level_first_byte & 0x7F ) { u4_level = ( u4_level_first_byte - ( ( u4_level_first_byte & 0x80 ) << 1 ) ) ; } else { IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 8 ) u4_level = u4_bits ; u4_level = ( u4_level - ( u4_level_first_byte << 1 ) ) ; } u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } } } u4_nz_cols |= 1 << ( u4_pos & 0x7 ) ; u4_nz_rows |= 1 << ( u4_pos >> 0x3 ) ; if ( u4_numCoeffs > 64 ) { return IMPEG2D_MB_TEX_DECODE_ERR ; } } IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , u4_sym_len ) } PUT_TEMP_STREAM_DATA ( u4_buf , u4_buf_nxt , u4_offset , pu4_buf_aligned , ps_stream ) ps_dec -> u4_non_zero_cols = u4_nz_cols ; ps_dec -> u4_non_zero_rows = u4_nz_rows ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , u4_sym_len ) lead_zeros = CLZ ( u4_bits ) - 15 ; if ( lead_zeros > 11 ) { return IMPEG2D_MB_DATA_DECODE_ERR ; } <S2SV_ModStart> , u4_sym_len ) lead_zeros = CLZ ( u4_bits ) - 15 ; if ( lead_zeros > 11 ) { return IMPEG2D_MB_DATA_DECODE_ERR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4118\n\n```\nCWE-476 BOOL rdp_decrypt ( rdpRdp * rdp , STREAM * s , int length , UINT16 securityFlags ) { BYTE cmac [ 8 ] ; BYTE wmac [ 8 ] ; if ( rdp -> settings -> EncryptionMethods == ENCRYPTION_METHOD_FIPS ) { UINT16 len ; BYTE version , pad ; BYTE * sig ; if ( stream_get_left ( s ) < 12 ) return FALSE ; stream_read_UINT16 ( s , len ) ; stream_read_BYTE ( s , version ) ; stream_read_BYTE ( s , pad ) ; sig = s -> p ; stream_seek ( s , 8 ) ; length -= 12 ; if ( ! security_fips_decrypt ( s -> p , length , rdp ) ) { printf ( \"FATAL:<S2SV_blank>cannot<S2SV_blank>decrypt\\\\n\" ) ; return FALSE ; } if ( ! security_fips_check_signature ( s -> p , length - pad , sig , rdp ) ) { printf ( \"FATAL:<S2SV_blank>invalid<S2SV_blank>packet<S2SV_blank>signature\\\\n\" ) ; return FALSE ; } s -> size -= pad ; return TRUE ; } if ( stream_get_left ( s ) < 8 ) return FALSE ; stream_read ( s , wmac , sizeof ( wmac ) ) ; length -= sizeof ( wmac ) ; <S2SV_StartBug> security_decrypt ( s -> p , length , rdp ) ; <S2SV_EndBug> if ( securityFlags & SEC_SECURE_CHECKSUM ) security_salted_mac_signature ( rdp , s -> p , length , FALSE , cmac ) ; else security_mac_signature ( rdp , s -> p , length , cmac ) ; if ( memcmp ( wmac , cmac , sizeof ( wmac ) ) != 0 ) { printf ( \"WARNING:<S2SV_blank>invalid<S2SV_blank>packet<S2SV_blank>signature\\\\n\" ) ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> wmac ) ; if ( ! <S2SV_ModStart> , rdp ) ) return FALSE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 void btsock_l2cap_signaled ( int fd , int flags , uint32_t user_id ) { l2cap_socket * sock ; char drop_it = FALSE ; pthread_mutex_lock ( & state_lock ) ; sock = btsock_l2cap_find_by_id_l ( user_id ) ; if ( sock ) { if ( ( flags & SOCK_THREAD_FD_RD ) && ! sock -> server ) { if ( sock -> connected ) { int size = 0 ; <S2SV_StartBug> if ( ! ( flags & SOCK_THREAD_FD_EXCEPTION ) || ( ioctl ( sock -> our_fd , FIONREAD , & size ) <S2SV_EndBug> == 0 && size ) ) { uint8_t * buffer = osi_malloc ( L2CAP_MAX_SDU_LENGTH ) ; if ( buffer != NULL ) { <S2SV_StartBug> int count = recv ( fd , buffer , L2CAP_MAX_SDU_LENGTH , <S2SV_EndBug> <S2SV_StartBug> MSG_NOSIGNAL | MSG_DONTWAIT ) ; <S2SV_EndBug> APPL_TRACE_DEBUG ( \"btsock_l2cap_signaled<S2SV_blank>-<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>received<S2SV_blank>from<S2SV_blank>socket\" , count ) ; if ( sock -> fixed_chan ) { if ( BTA_JvL2capWriteFixed ( sock -> channel , ( BD_ADDR * ) & sock -> addr , ( UINT32 ) buffer , btsock_l2cap_cbk , buffer , count , ( void * ) user_id ) != BTA_JV_SUCCESS ) { on_l2cap_write_fixed_done ( buffer , user_id ) ; } } else { if ( BTA_JvL2capWrite ( sock -> handle , ( UINT32 ) buffer , buffer , count , ( void * ) user_id ) != BTA_JV_SUCCESS ) { on_l2cap_write_done ( buffer , user_id ) ; } } } else { APPL_TRACE_ERROR ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>data<S2SV_blank>packet<S2SV_blank>from<S2SV_blank>JAVA...\" ) } } } else drop_it = TRUE ; } if ( flags & SOCK_THREAD_FD_WR ) { if ( flush_incoming_que_on_wr_signal_l ( sock ) && sock -> connected ) btsock_thread_add_fd ( pth , sock -> our_fd , BTSOCK_L2CAP , SOCK_THREAD_FD_WR , sock -> id ) ; } if ( drop_it || ( flags & SOCK_THREAD_FD_EXCEPTION ) ) { int size = 0 ; <S2SV_StartBug> if ( drop_it || ioctl ( sock -> our_fd , FIONREAD , & size ) != 0 || size == 0 ) <S2SV_EndBug> btsock_l2cap_free_l ( sock ) ; } } pthread_mutex_unlock ( & state_lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) || ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> , & size ) <S2SV_ModStart> int count = TEMP_FAILURE_RETRY ( <S2SV_ModStart> | MSG_DONTWAIT ) ) <S2SV_ModStart> ( drop_it || TEMP_FAILURE_RETRY ( <S2SV_ModStart> & size ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static void umount_tree ( struct mount * mnt , enum umount_tree_flags how ) { LIST_HEAD ( tmp_list ) ; struct mount * p ; if ( how & UMOUNT_PROPAGATE ) propagate_mount_unlock ( mnt ) ; for ( p = mnt ; p ; p = next_mnt ( p , mnt ) ) { p -> mnt . mnt_flags |= MNT_UMOUNT ; list_move ( & p -> mnt_list , & tmp_list ) ; } list_for_each_entry ( p , & tmp_list , mnt_list ) { list_del_init ( & p -> mnt_child ) ; } if ( how & UMOUNT_PROPAGATE ) propagate_umount ( & tmp_list ) ; while ( ! list_empty ( & tmp_list ) ) { <S2SV_StartBug> bool disconnect ; <S2SV_EndBug> p = list_first_entry ( & tmp_list , struct mount , mnt_list ) ; list_del_init ( & p -> mnt_expire ) ; list_del_init ( & p -> mnt_list ) ; <S2SV_StartBug> __touch_mnt_namespace ( p -> mnt_ns ) ; <S2SV_EndBug> p -> mnt_ns = NULL ; if ( how & UMOUNT_SYNC ) p -> mnt . mnt_flags |= MNT_SYNC_UMOUNT ; disconnect = disconnect_mount ( p , how ) ; pin_insert_group ( & p -> mnt_umount , & p -> mnt_parent -> mnt , disconnect ? & unmounted : NULL ) ; if ( mnt_has_parent ( p ) ) { mnt_add_count ( p -> mnt_parent , - 1 ) ; if ( ! disconnect ) { list_add_tail ( & p -> mnt_child , & p -> mnt_parent -> mnt_mounts ) ; } else { umount_mnt ( p ) ; } } change_mnt_propagation ( p , MS_PRIVATE ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { struct mnt_namespace * ns ; <S2SV_ModStart> mnt_list ) ; ns = p -> mnt_ns ; if ( ns ) { ns -> mounts -- ; __touch_mnt_namespace ( ns ) ; } <S2SV_ModEnd> p -> mnt_ns\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19645\n\n```\nCWE-674 <S2SV_StartBug> static int renameColumnSelectCb ( Walker * pWalker , Select * p ) { <S2SV_EndBug> renameWalkWith ( pWalker , p ) ; return WRC_Continue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p ) { if ( p -> selFlags & SF_View ) return WRC_Prune ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4009\n\n```\nCWE-119 Imaging ImagingResampleHorizontal ( Imaging imIn , int xsize , int filter ) { ImagingSectionCookie cookie ; Imaging imOut ; struct filter * filterp ; float support , scale , filterscale ; float center , ww , ss , ss0 , ss1 , ss2 , ss3 ; int xx , yy , x , kmax , xmin , xmax ; int * xbounds ; float * k , * kk ; switch ( filter ) { case IMAGING_TRANSFORM_LANCZOS : filterp = & LANCZOS ; break ; case IMAGING_TRANSFORM_BILINEAR : filterp = & BILINEAR ; break ; case IMAGING_TRANSFORM_BICUBIC : filterp = & BICUBIC ; break ; default : return ( Imaging ) ImagingError_ValueError ( \"unsupported<S2SV_blank>resampling<S2SV_blank>filter\" ) ; } filterscale = scale = ( float ) imIn -> xsize / xsize ; support = filterp -> support ; if ( filterscale < 1.0 ) { filterscale = 1.0 ; } support = support * filterscale ; kmax = ( int ) ceil ( support ) * 2 + 1 ; <S2SV_StartBug> kk = malloc ( xsize * kmax * sizeof ( float ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! kk ) <S2SV_EndBug> return ( Imaging ) ImagingError_MemoryError ( ) ; xbounds = malloc ( xsize * 2 * sizeof ( int ) ) ; if ( ! xbounds ) { free ( kk ) ; return ( Imaging ) ImagingError_MemoryError ( ) ; } for ( xx = 0 ; xx < xsize ; xx ++ ) { k = & kk [ xx * kmax ] ; center = ( xx + 0.5 ) * scale ; ww = 0.0 ; ss = 1.0 / filterscale ; xmin = ( int ) floor ( center - support ) ; if ( xmin < 0 ) xmin = 0 ; xmax = ( int ) ceil ( center + support ) ; if ( xmax > imIn -> xsize ) xmax = imIn -> xsize ; for ( x = xmin ; x < xmax ; x ++ ) { float w = filterp -> filter ( ( x - center + 0.5 ) * ss ) * ss ; k [ x - xmin ] = w ; ww += w ; } for ( x = 0 ; x < xmax - xmin ; x ++ ) { if ( ww != 0.0 ) k [ x ] /= ww ; } xbounds [ xx * 2 + 0 ] = xmin ; xbounds [ xx * 2 + 1 ] = xmax ; } imOut = ImagingNew ( imIn -> mode , xsize , imIn -> ysize ) ; if ( ! imOut ) { free ( kk ) ; free ( xbounds ) ; return NULL ; } ImagingSectionEnter ( & cookie ) ; for ( yy = 0 ; yy < imOut -> ysize ; yy ++ ) { if ( imIn -> image8 ) { for ( xx = 0 ; xx < xsize ; xx ++ ) { xmin = xbounds [ xx * 2 + 0 ] ; xmax = xbounds [ xx * 2 + 1 ] ; k = & kk [ xx * kmax ] ; ss = 0.5 ; for ( x = xmin ; x < xmax ; x ++ ) ss += i2f ( imIn -> image8 [ yy ] [ x ] ) * k [ x - xmin ] ; imOut -> image8 [ yy ] [ xx ] = clip8 ( ss ) ; } } else { switch ( imIn -> type ) { case IMAGING_TYPE_UINT8 : if ( imIn -> bands == 2 ) { for ( xx = 0 ; xx < xsize ; xx ++ ) { xmin = xbounds [ xx * 2 + 0 ] ; xmax = xbounds [ xx * 2 + 1 ] ; k = & kk [ xx * kmax ] ; ss0 = ss1 = 0.5 ; for ( x = xmin ; x < xmax ; x ++ ) { ss0 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 0 ] ) * k [ x - xmin ] ; ss1 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 3 ] ) * k [ x - xmin ] ; } imOut -> image [ yy ] [ xx * 4 + 0 ] = clip8 ( ss0 ) ; imOut -> image [ yy ] [ xx * 4 + 3 ] = clip8 ( ss1 ) ; } } else if ( imIn -> bands == 3 ) { for ( xx = 0 ; xx < xsize ; xx ++ ) { xmin = xbounds [ xx * 2 + 0 ] ; xmax = xbounds [ xx * 2 + 1 ] ; k = & kk [ xx * kmax ] ; ss0 = ss1 = ss2 = 0.5 ; for ( x = xmin ; x < xmax ; x ++ ) { ss0 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 0 ] ) * k [ x - xmin ] ; ss1 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 1 ] ) * k [ x - xmin ] ; ss2 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 2 ] ) * k [ x - xmin ] ; } imOut -> image [ yy ] [ xx * 4 + 0 ] = clip8 ( ss0 ) ; imOut -> image [ yy ] [ xx * 4 + 1 ] = clip8 ( ss1 ) ; imOut -> image [ yy ] [ xx * 4 + 2 ] = clip8 ( ss2 ) ; } } else { for ( xx = 0 ; xx < xsize ; xx ++ ) { xmin = xbounds [ xx * 2 + 0 ] ; xmax = xbounds [ xx * 2 + 1 ] ; k = & kk [ xx * kmax ] ; ss0 = ss1 = ss2 = ss3 = 0.5 ; for ( x = xmin ; x < xmax ; x ++ ) { ss0 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 0 ] ) * k [ x - xmin ] ; ss1 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 1 ] ) * k [ x - xmin ] ; ss2 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 2 ] ) * k [ x - xmin ] ; ss3 += i2f ( ( UINT8 ) imIn -> image [ yy ] [ x * 4 + 3 ] ) * k [ x - xmin ] ; } imOut -> image [ yy ] [ xx * 4 + 0 ] = clip8 ( ss0 ) ; imOut -> image [ yy ] [ xx * 4 + 1 ] = clip8 ( ss1 ) ; imOut -> image [ yy ] [ xx * 4 + 2 ] = clip8 ( ss2 ) ; imOut -> image [ yy ] [ xx * 4 + 3 ] = clip8 ( ss3 ) ; } } break ; case IMAGING_TYPE_INT32 : for ( xx = 0 ; xx < xsize ; xx ++ ) { xmin = xbounds [ xx * 2 + 0 ] ; xmax = xbounds [ xx * 2 + 1 ] ; k = & kk [ xx * kmax ] ; ss = 0.0 ; for ( x = xmin ; x < xmax ; x ++ ) ss += i2f ( IMAGING_PIXEL_I ( imIn , x , yy ) ) * k [ x - xmin ] ; IMAGING_PIXEL_I ( imOut , xx , yy ) = ( int ) ss ; } break ; case IMAGING_TYPE_FLOAT32 : for ( xx = 0 ; xx < xsize ; xx ++ ) { xmin = xbounds [ xx * 2 + 0 ] ; xmax = xbounds [ xx * 2 + 1 ] ; k = & kk [ xx * kmax ] ; ss = 0.0 ; for ( x = xmin ; x < xmax ; x ++ ) ss += IMAGING_PIXEL_F ( imIn , x , yy ) * k [ x - xmin ] ; IMAGING_PIXEL_F ( imOut , xx , yy ) = ss ; } break ; } } } ImagingSectionLeave ( & cookie ) ; free ( kk ) ; free ( xbounds ) ; return imOut ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 1 ; if ( kmax > 0 && xsize > SIZE_MAX / kmax ) return ( Imaging ) ImagingError_MemoryError ( ) ; if ( xsize * kmax > SIZE_MAX / sizeof ( float ) ) return ( Imaging ) ImagingError_MemoryError ( ) ; <S2SV_ModStart> ( ! kk ) return ( Imaging ) ImagingError_MemoryError ( ) ; if ( xsize > SIZE_MAX / ( 2 * sizeof ( int ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0206\n\n```\nCWE-119 static int dtls1_process_record ( SSL * s ) { int i , al ; int enc_err ; SSL_SESSION * sess ; SSL3_RECORD * rr ; unsigned int mac_size ; unsigned char md [ EVP_MAX_MD_SIZE ] ; rr = & ( s -> s3 -> rrec ) ; sess = s -> session ; rr -> input = & ( s -> packet [ DTLS1_RT_HEADER_LENGTH ] ) ; if ( rr -> length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_ENCRYPTED_LENGTH_TOO_LONG ) ; goto f_err ; } rr -> data = rr -> input ; rr -> orig_len = rr -> length ; enc_err = s -> method -> ssl3_enc -> enc ( s , 0 ) ; if ( enc_err == 0 ) { rr -> length = 0 ; s -> packet_length = 0 ; goto err ; } # ifdef TLS_DEBUG printf ( \"dec<S2SV_blank>%d\\\\n\" , rr -> length ) ; { unsigned int z ; for ( z = 0 ; z < rr -> length ; z ++ ) printf ( \"%02X%c\" , rr -> data [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } printf ( \"\\\\n\" ) ; # endif if ( ( sess != NULL ) && ( s -> enc_read_ctx != NULL ) && ( EVP_MD_CTX_md ( s -> read_hash ) != NULL ) ) { unsigned char * mac = NULL ; unsigned char mac_tmp [ EVP_MAX_MD_SIZE ] ; mac_size = EVP_MD_CTX_size ( s -> read_hash ) ; OPENSSL_assert ( mac_size <= EVP_MAX_MD_SIZE ) ; if ( rr -> orig_len < mac_size || ( EVP_CIPHER_CTX_mode ( s -> enc_read_ctx ) == EVP_CIPH_CBC_MODE && rr -> orig_len < mac_size + 1 ) ) { al = SSL_AD_DECODE_ERROR ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } if ( EVP_CIPHER_CTX_mode ( s -> enc_read_ctx ) == EVP_CIPH_CBC_MODE ) { mac = mac_tmp ; ssl3_cbc_copy_mac ( mac_tmp , rr , mac_size ) ; rr -> length -= mac_size ; } else { rr -> length -= mac_size ; mac = & rr -> data [ rr -> length ] ; } i = s -> method -> ssl3_enc -> mac ( s , md , 0 ) ; if ( i < 0 || mac == NULL || CRYPTO_memcmp ( md , mac , ( size_t ) mac_size ) != 0 ) enc_err = - 1 ; if ( rr -> length > SSL3_RT_MAX_COMPRESSED_LENGTH + mac_size ) enc_err = - 1 ; } if ( enc_err < 0 ) { rr -> length = 0 ; s -> packet_length = 0 ; goto err ; } if ( s -> expand != NULL ) { if ( rr -> length > SSL3_RT_MAX_COMPRESSED_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_COMPRESSED_LENGTH_TOO_LONG ) ; goto f_err ; } if ( ! ssl3_do_uncompress ( s ) ) { al = SSL_AD_DECOMPRESSION_FAILURE ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_BAD_DECOMPRESSION ) ; goto f_err ; } } if ( rr -> length > SSL3_RT_MAX_PLAIN_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_DATA_LENGTH_TOO_LONG ) ; goto f_err ; } rr -> off = 0 ; s -> packet_length = 0 ; <S2SV_StartBug> dtls1_record_bitmap_update ( s , & ( s -> d1 -> bitmap ) ) ; <S2SV_EndBug> return ( 1 ) ; f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> return ( 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7456\n\n```\nCWE-125 static inline LineContribType * _gdContributionsCalc ( unsigned int line_size , unsigned int src_size , double scale_d , const interpolation_method pFilter ) { double width_d ; double scale_f_d = 1.0 ; const double filter_width_d = DEFAULT_BOX_RADIUS ; int windows_size ; unsigned int u ; LineContribType * res ; if ( scale_d < 1.0 ) { width_d = filter_width_d / scale_d ; scale_f_d = scale_d ; } else { width_d = filter_width_d ; } windows_size = 2 * ( int ) ceil ( width_d ) + 1 ; res = _gdContributionsAlloc ( line_size , windows_size ) ; for ( u = 0 ; u < line_size ; u ++ ) { const double dCenter = ( double ) u / scale_d ; register int iLeft = MAX ( 0 , ( int ) floor ( dCenter - width_d ) ) ; int iRight = MIN ( ( int ) ceil ( dCenter + width_d ) , ( int ) src_size - 1 ) ; double dTotalWeight = 0.0 ; <S2SV_StartBug> int iSrc ; <S2SV_EndBug> res -> ContribRow [ u ] . Left = iLeft ; res -> ContribRow [ u ] . Right = iRight ; if ( iRight - iLeft + 1 > windows_size ) { if ( iLeft < ( ( int ) src_size - 1 / 2 ) ) { iLeft ++ ; } else { iRight -- ; } } <S2SV_StartBug> for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { <S2SV_EndBug> <S2SV_StartBug> dTotalWeight += ( res -> ContribRow [ u ] . Weights [ iSrc - iLeft ] = scale_f_d * ( * pFilter ) ( scale_f_d * ( dCenter - ( double ) iSrc ) ) ) ; <S2SV_EndBug> } if ( dTotalWeight < 0.0 ) { _gdContributionsFree ( res ) ; return NULL ; } if ( dTotalWeight > 0.0 ) { for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { res -> ContribRow [ u ] . Weights [ iSrc - iLeft ] /= dTotalWeight ; } } } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int iSrc <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; } } <S2SV_ModEnd> res -> ContribRow <S2SV_ModStart> u ] . Left = iLeft ; res -> ContribRow [ u ] . Right = iRight ; for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { dTotalWeight += ( res -> ContribRow [ u ] .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5359\n\n```\nCWE-119 static guint32 parse_wbxml_tag_defined ( proto_tree * tree , tvbuff_t * tvb , guint32 offset , guint32 str_tbl , guint8 * level , guint8 * codepage_stag , guint8 * codepage_attr , const wbxml_decoding * map ) { guint32 tvb_len = tvb_reported_length ( tvb ) ; <S2SV_StartBug> guint32 off = offset ; <S2SV_EndBug> guint32 len ; guint str_len ; guint32 ent ; guint32 idx ; guint8 peek ; guint32 tag_len ; guint8 tag_save_known = 0 ; guint8 tag_new_known = 0 ; const char * tag_save_literal ; const char * tag_new_literal ; guint8 parsing_tag_content = FALSE ; tag_save_literal = NULL ; <S2SV_StartBug> DebugLog ( ( \"parse_wbxml_tag_defined<S2SV_blank>(level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>offset<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , * level , offset ) ) ; <S2SV_EndBug> while ( off < tvb_len ) { peek = tvb_get_guint8 ( tvb , off ) ; DebugLog ( ( \"STAG:<S2SV_blank>(top<S2SV_blank>of<S2SV_blank>while)<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%3u,<S2SV_blank>peek<S2SV_blank>=<S2SV_blank>0x%02X,<S2SV_blank>off<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>tvb_len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , * level , peek , off , tvb_len ) ) ; if ( ( peek & 0x3F ) < 4 ) switch ( peek ) { case 0x00 : * codepage_stag = tvb_get_guint8 ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 2 , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>-->%3d<S2SV_blank>\" \"|<S2SV_blank>SWITCH_PAGE<S2SV_blank>(Tag<S2SV_blank>code<S2SV_blank>page)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|\" , * codepage_stag ) ; off += 2 ; break ; case 0x01 : if ( tag_save_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(Known<S2SV_blank>Tag<S2SV_blank>0x%02X)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s</%s>\" , * level , * codepage_stag , tag_save_known , Indent ( * level ) , tag_save_literal ) ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s</%s>\" , * level , * codepage_stag , Indent ( * level ) , tag_save_literal ? tag_save_literal : \"\" ) ; } ( * level ) -- ; off ++ ; DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , * level , off - offset ) ) ; return ( off - offset ) ; case 0x02 : ent = tvb_get_guintvar ( tvb , off + 1 , & len ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>ENTITY<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s\\'&#%u;\\'\" , * level , * codepage_stag , Indent ( * level ) , ent ) ; off += 1 + len ; break ; case 0x03 : len = tvb_strsize ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>STR_I<S2SV_blank>(Inline<S2SV_blank>string)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s\\\\\\'%s\\\\\\'\" , * level , * codepage_stag , Indent ( * level ) , tvb_format_text ( tvb , off + 1 , len - 1 ) ) ; off += 1 + len ; break ; case 0x40 : case 0x41 : case 0x42 : len = tvb_strsize ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_I_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s(%s:<S2SV_blank>\\\\\\'%s\\\\\\')\" , * level , * codepage_stag , peek & 0x0f , Indent ( * level ) , map_token ( map -> global , 0 , peek ) , tvb_format_text ( tvb , off + 1 , len - 1 ) ) ; off += 1 + len ; break ; case 0x43 : proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>PI<S2SV_blank>(XML<S2SV_blank>Processing<S2SV_blank>Instruction)<S2SV_blank>\" \"|<S2SV_blank>%s<?xml\" , * level , * codepage_stag , Indent ( * level ) ) ; len = parse_wbxml_attribute_list_defined ( tree , tvb , off , str_tbl , * level , codepage_attr , map ) ; off += len ; if ( off >= tvb_len ) { DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>ThrowException:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(short<S2SV_blank>frame)\\\\n\" , * level , off - offset ) ) ; THROW ( ReportedBoundsError ) ; } proto_tree_add_text ( tree , tvb , off - 1 , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(PI)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s?>\" , * level , * codepage_stag , Indent ( * level ) ) ; break ; case 0x80 : case 0x81 : case 0x82 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; { char * s ; if ( map -> ext_t [ peek & 0x03 ] ) s = ( map -> ext_t [ peek & 0x03 ] ) ( tvb , idx , str_tbl ) ; else s = wmem_strdup_printf ( wmem_packet_scope ( ) , \"EXT_T_%1x<S2SV_blank>(%s)\" , peek & 0x03 , map_token ( map -> global , 0 , peek ) ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_T_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s%s\" , * level , * codepage_stag , peek & 0x0f , Indent ( * level ) , s ) ; } off += 1 + len ; break ; case 0x83 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; str_len = tvb_strsize ( tvb , str_tbl + idx ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>STR_T<S2SV_blank>(Tableref<S2SV_blank>string)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s\\\\\\'%s\\\\\\'\" , * level , * codepage_stag , Indent ( * level ) , tvb_format_text ( tvb , str_tbl + idx , str_len - 1 ) ) ; off += 1 + len ; break ; case 0xC0 : case 0xC1 : case 0xC2 : proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s(%s)\" , * level , * codepage_stag , peek & 0x0f , Indent ( * level ) , map_token ( map -> global , 0 , peek ) ) ; off ++ ; break ; case 0xC3 : if ( tvb_get_guint8 ( tvb , 0 ) ) { char * str ; if ( tag_save_known ) { if ( map -> opaque_binary_tag ) { str = map -> opaque_binary_tag ( tvb , off + 1 , tag_save_known , * codepage_stag , & len ) ; } else { str = default_opaque_binary_tag ( tvb , off + 1 , tag_save_known , * codepage_stag , & len ) ; } } else { if ( map -> opaque_literal_tag ) { str = map -> opaque_literal_tag ( tvb , off + 1 , tag_save_literal , * codepage_stag , & len ) ; } else { str = default_opaque_literal_tag ( tvb , off + 1 , tag_save_literal , * codepage_stag , & len ) ; } } proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>OPAQUE<S2SV_blank>(Opaque<S2SV_blank>data)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s%s\" , * level , * codepage_stag , Indent ( * level ) , str ) ; off += 1 + len ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>RESERVED_2<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Invalid<S2SV_blank>Token!)<S2SV_blank>\" \"|<S2SV_blank>WBXML<S2SV_blank>1.0<S2SV_blank>parsing<S2SV_blank>stops<S2SV_blank>here.\" , * level , * codepage_stag ) ; off = tvb_len ; DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , * level , off - offset ) ) ; return ( off - offset ) ; } break ; } else { tag_len = 0 ; if ( ( peek & 0x3F ) == 4 ) { DebugLog ( ( \"STAG:<S2SV_blank>LITERAL<S2SV_blank>tag<S2SV_blank>(peek<S2SV_blank>=<S2SV_blank>0x%02X,<S2SV_blank>off<S2SV_blank>=<S2SV_blank>%u)<S2SV_blank>-<S2SV_blank>TableRef<S2SV_blank>follows!\\\\n\" , peek , off ) ) ; idx = tvb_get_guintvar ( tvb , off + 1 , & tag_len ) ; str_len = tvb_strsize ( tvb , str_tbl + idx ) ; tag_new_literal = ( const gchar * ) tvb_get_ptr ( tvb , str_tbl + idx , str_len ) ; tag_new_known = 0 ; } else { tag_new_known = peek & 0x3F ; tag_new_literal = map_token ( map -> tags , * codepage_stag , tag_new_known ) ; } if ( peek & 0x40 ) { if ( parsing_tag_content ) { DebugLog ( ( \"STAG:<S2SV_blank>Tag<S2SV_blank>in<S2SV_blank>Tag<S2SV_blank>-<S2SV_blank>RECURSE!<S2SV_blank>(off<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , off ) ) ; ( * level ) ++ ; len = parse_wbxml_tag_defined ( tree , tvb , off , str_tbl , level , codepage_stag , codepage_attr , map ) ; off += len ; } else { if ( ( peek & 0x3F ) == 4 ) { tag_save_literal = tag_new_literal ; tag_save_known = 0 ; } else { tag_save_known = tag_new_known ; tag_save_literal = tag_new_literal ; } if ( peek & 0x80 ) { if ( tag_new_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>Tag<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(AC)<S2SV_blank>\" \"|<S2SV_blank>%s<%s\" , * level , * codepage_stag , tag_new_known , Indent ( * level ) , tag_new_literal ) ; off ++ ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL_AC<S2SV_blank>(Literal<S2SV_blank>tag)<S2SV_blank><S2SV_blank><S2SV_blank>(AC)<S2SV_blank>\" \"|<S2SV_blank>%s<%s\" , * level , * codepage_stag , Indent ( * level ) , tag_new_literal ) ; off += 1 + tag_len ; } len = parse_wbxml_attribute_list_defined ( tree , tvb , off , str_tbl , * level , codepage_attr , map ) ; off += len ; if ( off >= tvb_len ) { DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>ThrowException:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(short<S2SV_blank>frame)\\\\n\" , * level , off - offset ) ) ; THROW ( ReportedBoundsError ) ; } proto_tree_add_text ( tree , tvb , off - 1 , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(attribute<S2SV_blank>list)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s>\" , * level , * codepage_stag , Indent ( * level ) ) ; } else { if ( tag_new_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>Tag<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(.C)<S2SV_blank>\" \"|<S2SV_blank>%s<%s>\" , * level , * codepage_stag , tag_new_known , Indent ( * level ) , tag_new_literal ) ; off ++ ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL_C<S2SV_blank><S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank>(.C)<S2SV_blank>\" \"|<S2SV_blank>%s<%s>\" , * level , * codepage_stag , Indent ( * level ) , tag_new_literal ) ; off += 1 + tag_len ; } } parsing_tag_content = TRUE ; DebugLog ( ( \"Tag<S2SV_blank>in<S2SV_blank>Tag<S2SV_blank>-<S2SV_blank>No<S2SV_blank>recursion<S2SV_blank>this<S2SV_blank>time!<S2SV_blank>(off<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , off ) ) ; } } else { DebugLog ( ( \"<Tag/><S2SV_blank>in<S2SV_blank>Tag<S2SV_blank>-<S2SV_blank>No<S2SV_blank>recursion!<S2SV_blank>(off<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , off ) ) ; ( * level ) ++ ; if ( peek & 0x80 ) { if ( tag_new_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>Tag<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(A.)<S2SV_blank>\" \"|<S2SV_blank>%s<%s\" , * level , * codepage_stag , tag_new_known , Indent ( * level ) , tag_new_literal ) ; off ++ ; len = parse_wbxml_attribute_list_defined ( tree , tvb , off , str_tbl , * level , codepage_attr , map ) ; off += len ; if ( off > tvb_len ) { DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>ThrowException:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(short<S2SV_blank>frame)\\\\n\" , * level , off - offset ) ) ; THROW ( ReportedBoundsError ) ; } proto_tree_add_text ( tree , tvb , off - 1 , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(Known<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s/>\" , * level , * codepage_stag , Indent ( * level ) ) ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL_A<S2SV_blank><S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank>(A.)<S2SV_blank>\" \"|<S2SV_blank>%s<%s\" , * level , * codepage_stag , Indent ( * level ) , tag_new_literal ) ; off += 1 + tag_len ; len = parse_wbxml_attribute_list_defined ( tree , tvb , off , str_tbl , * level , codepage_attr , map ) ; off += len ; if ( off >= tvb_len ) { DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>ThrowException:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(short<S2SV_blank>frame)\\\\n\" , * level , off - offset ) ) ; THROW ( ReportedBoundsError ) ; } proto_tree_add_text ( tree , tvb , off - 1 , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s/>\" , * level , * codepage_stag , Indent ( * level ) ) ; } } else { if ( tag_new_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>Tag<S2SV_blank>0x%02x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(..)<S2SV_blank>\" \"|<S2SV_blank>%s<%s<S2SV_blank>/>\" , * level , * codepage_stag , tag_new_known , Indent ( * level ) , tag_new_literal ) ; off ++ ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank>(..)<S2SV_blank>\" \"|<S2SV_blank>%s<%s<S2SV_blank>/>\" , * level , * codepage_stag , Indent ( * level ) , tag_new_literal ) ; off += 1 + tag_len ; } } ( * level ) -- ; } } <S2SV_StartBug> } <S2SV_EndBug> DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(end<S2SV_blank>of<S2SV_blank>function<S2SV_blank>body)\\\\n\" , * level , off - offset ) ) ; return ( off - offset ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> off = offset , last_off <S2SV_ModStart> offset ) ) ; last_off = off <S2SV_ModStart> ; } } if ( off < last_off ) { THROW ( ReportedBoundsError ) ; } last_off = off ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 struct sock * tcp_v4_syn_recv_sock ( struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst ) { struct inet_request_sock * ireq ; struct inet_sock * newinet ; struct tcp_sock * newtp ; struct sock * newsk ; # ifdef CONFIG_TCP_MD5SIG struct tcp_md5sig_key * key ; # endif <S2SV_StartBug> if ( sk_acceptq_is_full ( sk ) ) <S2SV_EndBug> goto exit_overflow ; if ( ! dst && ( dst = inet_csk_route_req ( sk , req ) ) == NULL ) goto exit ; newsk = tcp_create_openreq_child ( sk , req , skb ) ; if ( ! newsk ) goto exit_nonewsk ; newsk -> sk_gso_type = SKB_GSO_TCPV4 ; sk_setup_caps ( newsk , dst ) ; newtp = tcp_sk ( newsk ) ; newinet = inet_sk ( newsk ) ; ireq = inet_rsk ( req ) ; newinet -> inet_daddr = ireq -> rmt_addr ; newinet -> inet_rcv_saddr = ireq -> loc_addr ; newinet -> inet_saddr = ireq -> loc_addr ; <S2SV_StartBug> newinet -> opt = ireq -> opt ; <S2SV_EndBug> ireq -> opt = NULL ; newinet -> mc_index = inet_iif ( skb ) ; newinet -> mc_ttl = ip_hdr ( skb ) -> ttl ; inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( newinet -> opt ) inet_csk ( newsk ) -> icsk_ext_hdr_len = newinet -> opt -> optlen ; newinet -> inet_id = newtp -> write_seq ^ jiffies ; tcp_mtup_init ( newsk ) ; tcp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newtp -> advmss = dst_metric_advmss ( dst ) ; if ( tcp_sk ( sk ) -> rx_opt . user_mss && tcp_sk ( sk ) -> rx_opt . user_mss < newtp -> advmss ) newtp -> advmss = tcp_sk ( sk ) -> rx_opt . user_mss ; tcp_initialize_rcv_mss ( newsk ) ; # ifdef CONFIG_TCP_MD5SIG key = tcp_v4_md5_do_lookup ( sk , newinet -> inet_daddr ) ; if ( key != NULL ) { char * newkey = kmemdup ( key -> key , key -> keylen , GFP_ATOMIC ) ; if ( newkey != NULL ) tcp_v4_md5_do_add ( newsk , newinet -> inet_daddr , newkey , key -> keylen ) ; sk_nocaps_add ( newsk , NETIF_F_GSO_MASK ) ; } # endif if ( __inet_inherit_port ( sk , newsk ) < 0 ) { sock_put ( newsk ) ; goto exit ; } __inet_hash_nolisten ( newsk , NULL ) ; return newsk ; exit_overflow : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; exit_nonewsk : dst_release ( dst ) ; exit : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif struct ip_options_rcu * inet_opt ; <S2SV_ModStart> -> loc_addr ; inet_opt = ireq -> opt ; rcu_assign_pointer ( newinet -> inet_opt , inet_opt ) ; <S2SV_ModEnd> ireq -> opt <S2SV_ModStart> ireq -> opt = NULL ; newinet -> mc_index = inet_iif ( skb ) ; newinet -> mc_ttl = ip_hdr ( skb ) -> ttl ; inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( inet_opt ) inet_csk ( newsk ) -> icsk_ext_hdr_len = inet_opt -> opt . <S2SV_ModEnd> optlen ; newinet\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20169\n\n```\nCWE-400 static int hwahc_security_create ( struct hwahc * hwahc ) { int result ; struct wusbhc * wusbhc = & hwahc -> wusbhc ; struct usb_device * usb_dev = hwahc -> wa . usb_dev ; struct device * dev = & usb_dev -> dev ; struct usb_security_descriptor * secd ; struct usb_encryption_descriptor * etd ; void * itr , * top ; size_t itr_size , needed , bytes ; u8 index ; char buf [ 64 ] ; index = ( usb_dev -> actconfig - usb_dev -> config ) / sizeof ( usb_dev -> config [ 0 ] ) ; itr = usb_dev -> rawdescriptors [ index ] ; itr_size = le16_to_cpu ( usb_dev -> actconfig -> desc . wTotalLength ) ; top = itr + itr_size ; result = __usb_get_extra_descriptor ( usb_dev -> rawdescriptors [ index ] , le16_to_cpu ( usb_dev -> actconfig -> desc . wTotalLength ) , <S2SV_StartBug> USB_DT_SECURITY , ( void * * ) & secd ) ; <S2SV_EndBug> if ( result == - 1 ) { dev_warn ( dev , \"BUG?<S2SV_blank>WUSB<S2SV_blank>host<S2SV_blank>has<S2SV_blank>no<S2SV_blank>security<S2SV_blank>descriptors\\\\n\" ) ; return 0 ; } needed = sizeof ( * secd ) ; if ( top - ( void * ) secd < needed ) { dev_err ( dev , \"BUG?<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>to<S2SV_blank>process<S2SV_blank>security<S2SV_blank>\" \"descriptor<S2SV_blank>header<S2SV_blank>(%zu<S2SV_blank>bytes<S2SV_blank>left<S2SV_blank>vs<S2SV_blank>%zu<S2SV_blank>needed)\\\\n\" , top - ( void * ) secd , needed ) ; return 0 ; } needed = le16_to_cpu ( secd -> wTotalLength ) ; if ( top - ( void * ) secd < needed ) { dev_err ( dev , \"BUG?<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>to<S2SV_blank>process<S2SV_blank>security<S2SV_blank>\" \"descriptors<S2SV_blank>(%zu<S2SV_blank>bytes<S2SV_blank>left<S2SV_blank>vs<S2SV_blank>%zu<S2SV_blank>needed)\\\\n\" , top - ( void * ) secd , needed ) ; return 0 ; } itr = ( void * ) secd + sizeof ( * secd ) ; top = ( void * ) secd + le16_to_cpu ( secd -> wTotalLength ) ; index = 0 ; bytes = 0 ; while ( itr < top ) { etd = itr ; if ( top - itr < sizeof ( * etd ) ) { dev_err ( dev , \"BUG:<S2SV_blank>bad<S2SV_blank>host<S2SV_blank>security<S2SV_blank>descriptor;<S2SV_blank>\" \"not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>(%zu<S2SV_blank>vs<S2SV_blank>%zu<S2SV_blank>left)\\\\n\" , top - itr , sizeof ( * etd ) ) ; break ; } if ( etd -> bLength < sizeof ( * etd ) ) { dev_err ( dev , \"BUG:<S2SV_blank>bad<S2SV_blank>host<S2SV_blank>encryption<S2SV_blank>descriptor;<S2SV_blank>\" \"descriptor<S2SV_blank>is<S2SV_blank>too<S2SV_blank>short<S2SV_blank>\" \"(%zu<S2SV_blank>vs<S2SV_blank>%zu<S2SV_blank>needed)\\\\n\" , ( size_t ) etd -> bLength , sizeof ( * etd ) ) ; break ; } itr += etd -> bLength ; bytes += snprintf ( buf + bytes , sizeof ( buf ) - bytes , \"%s<S2SV_blank>(0x%02x)<S2SV_blank>\" , wusb_et_name ( etd -> bEncryptionType ) , etd -> bEncryptionValue ) ; wusbhc -> ccm1_etd = etd ; } dev_info ( dev , \"supported<S2SV_blank>encryption<S2SV_blank>types:<S2SV_blank>%s\\\\n\" , buf ) ; if ( wusbhc -> ccm1_etd == NULL ) { dev_err ( dev , \"E:<S2SV_blank>host<S2SV_blank>doesn\\'t<S2SV_blank>support<S2SV_blank>CCM-1<S2SV_blank>crypto\\\\n\" ) ; return 0 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) & secd , sizeof ( * secd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void set_rt_speed_feature ( VP9_COMMON * cm , SPEED_FEATURES * sf , <S2SV_EndBug> <S2SV_StartBug> int speed ) { <S2SV_EndBug> sf -> static_segmentation = 0 ; sf -> adaptive_rd_thresh = 1 ; <S2SV_StartBug> sf -> encode_breakout_thresh = 1 ; <S2SV_EndBug> sf -> use_fast_coef_costing = 1 ; <S2SV_StartBug> if ( speed == 1 ) { <S2SV_EndBug> sf -> use_square_partition_only = ! frame_is_intra_only ( cm ) ; sf -> less_rectangular_check = 1 ; sf -> tx_size_search_method = frame_is_intra_only ( cm ) ? USE_FULL_RD : USE_LARGESTALL ; <S2SV_StartBug> if ( MIN ( cm -> width , cm -> height ) >= 720 ) <S2SV_EndBug> sf -> disable_split_mask = cm -> show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT ; else sf -> disable_split_mask = DISABLE_COMPOUND_SPLIT ; sf -> use_rd_breakout = 1 ; sf -> adaptive_motion_search = 1 ; sf -> adaptive_pred_interp_filter = 1 ; <S2SV_StartBug> sf -> auto_mv_step_size = 1 ; <S2SV_EndBug> sf -> adaptive_rd_thresh = 2 ; sf -> intra_y_mode_mask [ TX_32X32 ] = INTRA_DC_H_V ; sf -> intra_uv_mode_mask [ TX_32X32 ] = INTRA_DC_H_V ; <S2SV_StartBug> sf -> intra_uv_mode_mask [ TX_16X16 ] = INTRA_DC_H_V ; <S2SV_EndBug> sf -> encode_breakout_thresh = 8 ; } if ( speed >= 2 ) { <S2SV_StartBug> sf -> use_square_partition_only = ! frame_is_intra_only ( cm ) ; <S2SV_EndBug> sf -> less_rectangular_check = 1 ; sf -> tx_size_search_method = frame_is_intra_only ( cm ) ? USE_FULL_RD : USE_LARGESTALL ; if ( MIN ( cm -> width , cm -> height ) >= 720 ) sf -> disable_split_mask = cm -> show_frame ? DISABLE_ALL_SPLIT : DISABLE_ALL_INTER_SPLIT ; else sf -> disable_split_mask = LAST_AND_INTRA_SPLIT_ONLY ; sf -> mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH | FLAG_SKIP_INTRA_BESTINTER | FLAG_SKIP_COMP_BESTINTRA | FLAG_SKIP_INTRA_LOWVAR ; <S2SV_StartBug> sf -> use_rd_breakout = 1 ; <S2SV_EndBug> sf -> adaptive_motion_search = 1 ; sf -> adaptive_pred_interp_filter = 2 ; <S2SV_StartBug> sf -> auto_mv_step_size = 1 ; <S2SV_EndBug> sf -> reference_masking = 1 ; sf -> disable_filter_search_var_thresh = 50 ; sf -> comp_inter_joint_search_thresh = BLOCK_SIZES ; sf -> auto_min_max_partition_size = RELAXED_NEIGHBORING_MIN_MAX ; <S2SV_StartBug> sf -> use_lastframe_partitioning = LAST_FRAME_PARTITION_LOW_MOTION ; <S2SV_EndBug> sf -> adjust_partitioning_from_last_frame = 1 ; sf -> last_partitioning_redo_frequency = 3 ; <S2SV_StartBug> sf -> adaptive_rd_thresh = 2 ; <S2SV_EndBug> sf -> use_lp32x32fdct = 1 ; sf -> mode_skip_start = 11 ; <S2SV_StartBug> sf -> intra_y_mode_mask [ TX_32X32 ] = INTRA_DC_H_V ; <S2SV_EndBug> sf -> intra_y_mode_mask [ TX_16X16 ] = INTRA_DC_H_V ; sf -> intra_uv_mode_mask [ TX_32X32 ] = INTRA_DC_H_V ; sf -> intra_uv_mode_mask [ TX_16X16 ] = INTRA_DC_H_V ; sf -> encode_breakout_thresh = 200 ; } if ( speed >= 3 ) { sf -> use_square_partition_only = 1 ; sf -> disable_filter_search_var_thresh = 100 ; <S2SV_StartBug> sf -> use_lastframe_partitioning = LAST_FRAME_PARTITION_ALL ; <S2SV_EndBug> sf -> constrain_copy_partition = 1 ; sf -> use_uv_intra_rd_estimate = 1 ; sf -> skip_encode_sb = 1 ; <S2SV_StartBug> sf -> subpel_iters_per_step = 1 ; <S2SV_EndBug> <S2SV_StartBug> sf -> use_fast_coef_updates = ONE_LOOP_REDUCED ; <S2SV_EndBug> sf -> adaptive_rd_thresh = 4 ; sf -> mode_skip_start = 6 ; sf -> allow_skip_recode = 0 ; sf -> optimize_coefficients = 0 ; sf -> disable_split_mask = DISABLE_ALL_SPLIT ; <S2SV_StartBug> sf -> lpf_pick = LPF_PICK_FROM_Q ; <S2SV_EndBug> sf -> encode_breakout_thresh = 700 ; } if ( speed >= 4 ) { int i ; sf -> last_partitioning_redo_frequency = 4 ; sf -> adaptive_rd_thresh = 5 ; sf -> use_fast_coef_costing = 0 ; sf -> auto_min_max_partition_size = STRICT_NEIGHBORING_MIN_MAX ; sf -> adjust_partitioning_from_last_frame = cm -> last_frame_type != cm -> frame_type || ( 0 == <S2SV_StartBug> ( cm -> current_video_frame + 1 ) % sf -> last_partitioning_redo_frequency ) ; <S2SV_EndBug> <S2SV_StartBug> sf -> subpel_force_stop = 1 ; <S2SV_EndBug> for ( i = 0 ; i < TX_SIZES ; i ++ ) { sf -> intra_y_mode_mask [ i ] = INTRA_DC_H_V ; <S2SV_StartBug> sf -> intra_uv_mode_mask [ i ] = INTRA_DC_ONLY ; <S2SV_EndBug> } <S2SV_StartBug> sf -> intra_y_mode_mask [ TX_32X32 ] = INTRA_DC_ONLY ; <S2SV_EndBug> sf -> frame_parameter_update = 0 ; <S2SV_StartBug> sf -> encode_breakout_thresh = 1000 ; <S2SV_EndBug> sf -> search_method = FAST_HEX ; <S2SV_StartBug> sf -> disable_inter_mode_mask [ BLOCK_32X32 ] = 1 << INTER_OFFSET ( ZEROMV ) ; <S2SV_EndBug> <S2SV_StartBug> sf -> disable_inter_mode_mask [ BLOCK_32X64 ] = ~ ( 1 << INTER_OFFSET ( NEARESTMV ) ) ; <S2SV_EndBug> <S2SV_StartBug> sf -> disable_inter_mode_mask [ BLOCK_64X32 ] = ~ ( 1 << INTER_OFFSET ( NEARESTMV ) ) ; <S2SV_EndBug> <S2SV_StartBug> sf -> disable_inter_mode_mask [ BLOCK_64X64 ] = ~ ( 1 << INTER_OFFSET ( NEARESTMV ) ) ; <S2SV_EndBug> sf -> max_intra_bsize = BLOCK_32X32 ; sf -> allow_skip_recode = 1 ; } if ( speed >= 5 ) { <S2SV_StartBug> sf -> max_partition_size = BLOCK_32X32 ; <S2SV_EndBug> <S2SV_StartBug> sf -> min_partition_size = BLOCK_8X8 ; <S2SV_EndBug> <S2SV_StartBug> sf -> partition_check = <S2SV_EndBug> ( cm -> current_video_frame % sf -> last_partitioning_redo_frequency == 1 ) ; sf -> force_frame_boost = cm -> frame_type == KEY_FRAME || ( cm -> current_video_frame % ( sf -> last_partitioning_redo_frequency << 1 ) == 1 ) ; <S2SV_StartBug> sf -> max_delta_qindex = ( cm -> frame_type == KEY_FRAME ) ? 20 : 15 ; <S2SV_EndBug> sf -> partition_search_type = REFERENCE_PARTITION ; sf -> use_nonrd_pick_mode = 1 ; <S2SV_StartBug> sf -> search_method = FAST_DIAMOND ; <S2SV_EndBug> <S2SV_StartBug> sf -> allow_skip_recode = 0 ; <S2SV_EndBug> } if ( speed >= 6 ) { <S2SV_StartBug> sf -> partition_search_type = SOURCE_VAR_BASED_PARTITION ; <S2SV_EndBug> sf -> search_type_check_frequency = 50 ; sf -> source_var_thresh = 360 ; sf -> use_nonrd_pick_mode = 1 ; <S2SV_StartBug> sf -> search_method = FAST_DIAMOND ; <S2SV_EndBug> } if ( speed >= 7 ) { <S2SV_StartBug> int i ; <S2SV_EndBug> for ( i = 0 ; i < BLOCK_SIZES ; ++ i ) sf -> disable_inter_mode_mask [ i ] = ~ ( 1 << INTER_OFFSET ( NEARESTMV ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void set_rt_speed_feature ( VP9_COMP * cpi <S2SV_ModEnd> , SPEED_FEATURES * <S2SV_ModStart> , int speed , vp9e_tune_content content ) { VP9_COMMON * const cm = & cpi -> common ; const int is_keyframe = cm -> frame_type == KEY_FRAME ; const int frames_since_key = is_keyframe ? 0 : cpi -> rc . frames_since_key ; <S2SV_ModEnd> sf -> static_segmentation <S2SV_ModStart> ; sf -> <S2SV_ModEnd> use_fast_coef_costing = 1 <S2SV_ModStart> if ( speed >= <S2SV_ModEnd> 1 ) { <S2SV_ModStart> : USE_LARGESTALL ; <S2SV_ModEnd> sf -> use_rd_breakout <S2SV_ModStart> ; sf -> mv . <S2SV_ModStart> ] = INTRA_DC_H_V <S2SV_ModEnd> ; } if <S2SV_ModStart> { sf -> mode_search_skip_flags = ( cm -> frame_type == KEY_FRAME ) ? 0 : <S2SV_ModEnd> FLAG_SKIP_INTRA_DIRMISMATCH | FLAG_SKIP_INTRA_BESTINTER <S2SV_ModStart> ; sf -> <S2SV_ModEnd> adaptive_pred_interp_filter = 2 <S2SV_ModStart> ; sf -> reference_masking = ( cpi -> oxcf . resize_mode != RESIZE_DYNAMIC && cpi -> svc . number_spatial_layers == 1 ) ? 1 : 0 <S2SV_ModEnd> ; sf -> <S2SV_ModStart> ; sf -> lf_motion_threshold = LOW_MOTION_THRESHOLD <S2SV_ModEnd> ; sf -> <S2SV_ModStart> ; sf -> <S2SV_ModEnd> use_lp32x32fdct = 1 <S2SV_ModStart> -> intra_y_mode_mask [ TX_16X16 <S2SV_ModEnd> ] = INTRA_DC_H_V <S2SV_ModStart> ] = INTRA_DC_H_V <S2SV_ModEnd> ; } if <S2SV_ModStart> ; sf -> <S2SV_ModEnd> use_uv_intra_rd_estimate = 1 <S2SV_ModStart> ; sf -> mv . <S2SV_ModStart> ; sf -> <S2SV_ModEnd> adaptive_rd_thresh = 4 <S2SV_ModStart> lpf_pick = LPF_PICK_FROM_Q <S2SV_ModEnd> ; } if <S2SV_ModStart> 0 == ( frames_since_key <S2SV_ModEnd> + 1 ) <S2SV_ModStart> ; sf -> mv . <S2SV_ModStart> i ] = INTRA_DC <S2SV_ModEnd> ; } sf <S2SV_ModStart> TX_32X32 ] = INTRA_DC <S2SV_ModEnd> ; sf -> <S2SV_ModStart> ; sf -> mv . <S2SV_ModEnd> search_method = FAST_HEX <S2SV_ModStart> ; sf -> inter_mode_mask <S2SV_ModEnd> [ BLOCK_32X32 ] <S2SV_ModStart> BLOCK_32X32 ] = INTER_NEAREST_NEAR_NEW ; sf -> inter_mode_mask <S2SV_ModEnd> [ BLOCK_32X64 ] <S2SV_ModStart> BLOCK_32X64 ] = INTER_NEAREST ; sf -> inter_mode_mask <S2SV_ModEnd> [ BLOCK_64X32 ] <S2SV_ModStart> BLOCK_64X32 ] = INTER_NEAREST ; sf -> inter_mode_mask <S2SV_ModEnd> [ BLOCK_64X64 ] <S2SV_ModStart> BLOCK_64X64 ] = INTER_NEAREST <S2SV_ModEnd> ; sf -> <S2SV_ModStart> { sf -> use_quant_fp = ! is_keyframe ; sf -> auto_min_max_partition_size = is_keyframe ? RELAXED_NEIGHBORING_MIN_MAX : STRICT_NEIGHBORING_MIN_MAX ; sf -> default_max_partition_size <S2SV_ModEnd> = BLOCK_32X32 ; <S2SV_ModStart> ; sf -> default_min_partition_size <S2SV_ModEnd> = BLOCK_8X8 ; <S2SV_ModStart> ; sf -> force_frame_boost = is_keyframe || ( frames_since_key % <S2SV_ModEnd> ( sf -> <S2SV_ModStart> -> max_delta_qindex = is_keyframe <S2SV_ModEnd> ? 20 : <S2SV_ModStart> ; sf -> <S2SV_ModEnd> allow_skip_recode = 0 <S2SV_ModStart> = 0 ; sf -> inter_mode_mask [ BLOCK_32X32 ] = INTER_NEAREST_NEW_ZERO ; sf -> inter_mode_mask [ BLOCK_32X64 ] = INTER_NEAREST_NEW_ZERO ; sf -> inter_mode_mask [ BLOCK_64X32 ] = INTER_NEAREST_NEW_ZERO ; sf -> inter_mode_mask [ BLOCK_64X64 ] = INTER_NEAREST_NEW_ZERO ; sf -> adaptive_rd_thresh = 2 ; sf -> reuse_inter_pred_sby = 1 ; sf -> partition_search_breakout_rate_thr = 200 ; sf -> coeff_prob_appx_step = 4 ; sf -> use_fast_coef_updates = is_keyframe ? TWO_LOOP : ONE_LOOP_REDUCED ; sf -> mode_search_skip_flags = FLAG_SKIP_INTRA_DIRMISMATCH ; sf -> tx_size_search_method = is_keyframe ? USE_LARGESTALL : USE_TX_8X8 ; sf -> simple_model_rd_from_var = 1 ; if ( ! is_keyframe ) { int i ; if ( content == VP9E_CONTENT_SCREEN ) { for ( i = 0 ; i < BLOCK_SIZES ; ++ i ) sf -> intra_y_mode_bsize_mask [ i ] = INTRA_DC_TM_H_V ; } else { for ( i = 0 ; i < BLOCK_SIZES ; ++ i ) if ( i >= BLOCK_16X16 ) sf -> intra_y_mode_bsize_mask [ i ] = INTRA_DC ; else sf -> intra_y_mode_bsize_mask [ i ] = INTRA_DC_H_V ; } } <S2SV_ModStart> -> partition_search_type = VAR_BASED_PARTITION <S2SV_ModEnd> ; sf -> <S2SV_ModStart> ; sf -> mv . search_method = NSTEP ; sf -> mv . reduce_first_step_size = 1 ; sf -> skip_encode_sb = 0 <S2SV_ModEnd> ; } if <S2SV_ModStart> 7 ) { sf -> adaptive_rd_thresh = 3 ; sf -> mv . search_method = FAST_DIAMOND ; sf -> mv . fullpel_search_step_param = 10 ; if ( cpi -> svc . number_temporal_layers > 2 && cpi -> svc . temporal_layer_id == 0 ) { sf -> mv . search_method = NSTEP ; sf -> mv . fullpel_search_step_param = 6 ; } } if ( speed >= 8 ) { sf -> adaptive_rd_thresh = 4 ; sf -> mv . subpel_force_stop = 2 ; sf -> lpf_pick = LPF_PICK_MINIMAL_LPF <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8617\n\n```\nCWE-134 static void zend_throw_or_error ( int fetch_type , zend_class_entry * exception_ce , const char * format , ... ) { va_list va ; char * message = NULL ; va_start ( va , format ) ; zend_vspprintf ( & message , 0 , format , va ) ; if ( fetch_type & ZEND_FETCH_CLASS_EXCEPTION ) { <S2SV_StartBug> zend_throw_error ( exception_ce , message ) ; <S2SV_EndBug> } else { zend_error ( E_ERROR , \"%s\" , message ) ; } efree ( message ) ; va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( exception_ce , \"%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8887\n\n```\nCWE-476 jp2_box_t * jp2_box_get ( jas_stream_t * in ) { jp2_box_t * box ; jp2_boxinfo_t * boxinfo ; jas_stream_t * tmpstream ; uint_fast32_t len ; uint_fast64_t extlen ; bool dataflag ; box = 0 ; tmpstream = 0 ; if ( ! ( box = jas_malloc ( sizeof ( jp2_box_t ) ) ) ) { goto error ; } box -> ops = & jp2_boxinfo_unk . ops ; if ( jp2_getuint32 ( in , & len ) || jp2_getuint32 ( in , & box -> type ) ) { goto error ; } boxinfo = jp2_boxinfolookup ( box -> type ) ; box -> info = boxinfo ; box -> ops = & boxinfo -> ops ; <S2SV_StartBug> box -> len = len ; <S2SV_EndBug> if ( box -> len == 1 ) { if ( jp2_getuint64 ( in , & extlen ) ) { goto error ; } if ( extlen > 0xffffffffUL ) { jas_eprintf ( \"warning:<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>large<S2SV_blank>64-bit<S2SV_blank>box<S2SV_blank>length\\\\n\" ) ; extlen = 0xffffffffUL ; } box -> len = extlen ; box -> datalen = extlen - JP2_BOX_HDRLEN ( true ) ; } else { box -> datalen = box -> len - JP2_BOX_HDRLEN ( false ) ; } if ( box -> len != 0 && box -> len < 8 ) { goto error ; } dataflag = ! ( box -> info -> flags & ( JP2_BOX_SUPER | JP2_BOX_NODATA ) ) ; if ( dataflag ) { if ( ! ( tmpstream = jas_stream_memopen ( 0 , 0 ) ) ) { goto error ; } if ( jas_stream_copy ( tmpstream , in , box -> datalen ) ) { <S2SV_StartBug> jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; <S2SV_EndBug> goto error ; } jas_stream_rewind ( tmpstream ) ; if ( box -> ops -> getdata ) { if ( ( * box -> ops -> getdata ) ( box , tmpstream ) ) { jas_eprintf ( \"cannot<S2SV_blank>parse<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; goto error ; } } jas_stream_close ( tmpstream ) ; } if ( jas_getdbglevel ( ) >= 1 ) { jp2_box_dump ( box , stderr ) ; } return box ; error : if ( box ) { jp2_box_destroy ( box ) ; } if ( tmpstream ) { jas_stream_close ( tmpstream ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = len ; JAS_DBGLOG ( 10 , ( \"preliminary<S2SV_blank>processing<S2SV_blank>of<S2SV_blank>JP2<S2SV_blank>box:<S2SV_blank>type=%c%s%c<S2SV_blank>(0x%08x);<S2SV_blank>length=%d\\\\n\" , \\'\"\\' , boxinfo -> name , \\'\"\\' , box -> type , box -> len ) ) <S2SV_ModStart> ) ) { box -> ops = & jp2_boxinfo_unk . ops ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int hci_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct sk_buff * skb ; int copied , err ; BT_DBG ( \"sock<S2SV_blank>%p,<S2SV_blank>sk<S2SV_blank>%p\" , sock , sk ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; if ( sk -> sk_state == BT_CLOSED ) return 0 ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) return err ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( skb ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; switch ( hci_pi ( sk ) -> channel ) { case HCI_CHANNEL_RAW : hci_sock_cmsg ( sk , msg , skb ) ; break ; case HCI_CHANNEL_USER : case HCI_CHANNEL_CONTROL : case HCI_CHANNEL_MONITOR : sock_recv_timestamp ( msg , sk , skb ) ; break ; } skb_free_datagram ( sk , skb ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return err ; <S2SV_ModEnd> copied = skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 void monitor_apply_keystate ( struct monitor * pmonitor ) { struct ssh * ssh = active_state ; struct kex * kex ; int r ; debug3 ( \"%s:<S2SV_blank>packet_set_state\" , __func__ ) ; if ( ( r = ssh_packet_set_state ( ssh , child_state ) ) != 0 ) fatal ( \"%s:<S2SV_blank>packet_set_state:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; sshbuf_free ( child_state ) ; child_state = NULL ; if ( ( kex = ssh -> kex ) != NULL ) { # ifdef WITH_OPENSSL kex -> kex [ KEX_DH_GRP1_SHA1 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP14_SHA1 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP14_SHA256 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP16_SHA512 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP18_SHA512 ] = kexdh_server ; kex -> kex [ KEX_DH_GEX_SHA1 ] = kexgex_server ; kex -> kex [ KEX_DH_GEX_SHA256 ] = kexgex_server ; kex -> kex [ KEX_ECDH_SHA2 ] = kexecdh_server ; # endif kex -> kex [ KEX_C25519_SHA256 ] = kexc25519_server ; kex -> load_host_public_key = & get_hostkey_public_by_type ; kex -> load_host_private_key = & get_hostkey_private_by_type ; kex -> host_key_index = & get_hostkey_index ; kex -> sign = sshd_hostkey_sign ; } <S2SV_StartBug> if ( options . compression ) { <S2SV_EndBug> ssh_packet_set_compress_hooks ( ssh , pmonitor -> m_zlib , ( ssh_packet_comp_alloc_func * ) mm_zalloc , ( ssh_packet_comp_free_func * ) mm_zfree ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sshd_hostkey_sign ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9077\n\n```\nCWE-000 static struct sock * tcp_v6_syn_recv_sock ( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req ) { struct inet_request_sock * ireq ; struct ipv6_pinfo * newnp ; const struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct ipv6_txoptions * opt ; struct tcp6_sock * newtcp6sk ; struct inet_sock * newinet ; struct tcp_sock * newtp ; struct sock * newsk ; # ifdef CONFIG_TCP_MD5SIG struct tcp_md5sig_key * key ; # endif struct flowi6 fl6 ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = tcp_v4_syn_recv_sock ( sk , skb , req , dst , req_unhash , own_req ) ; if ( ! newsk ) return NULL ; newtcp6sk = ( struct tcp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newtcp6sk -> inet6 ; newinet = inet_sk ( newsk ) ; newnp = inet6_sk ( newsk ) ; newtp = tcp_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newnp -> saddr = newsk -> sk_v6_rcv_saddr ; inet_csk ( newsk ) -> icsk_af_ops = & ipv6_mapped ; newsk -> sk_backlog_rcv = tcp_v4_do_rcv ; # ifdef CONFIG_TCP_MD5SIG newtp -> af_specific = & tcp_sock_ipv6_mapped_specific ; # endif <S2SV_StartBug> newnp -> ipv6_ac_list = NULL ; <S2SV_EndBug> newnp -> ipv6_fl_list = NULL ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = tcp_v6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; newnp -> rcv_flowinfo = ip6_flowinfo ( ipv6_hdr ( skb ) ) ; if ( np -> repflow ) newnp -> flow_label = ip6_flowlabel ( ipv6_hdr ( skb ) ) ; tcp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } ireq = inet_rsk ( req ) ; if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( ! dst ) { dst = inet6_csk_route_req ( sk , & fl6 , req , IPPROTO_TCP ) ; if ( ! dst ) goto out ; } newsk = tcp_create_openreq_child ( sk , req , skb ) ; if ( ! newsk ) goto out_nonewsk ; newsk -> sk_gso_type = SKB_GSO_TCPV6 ; ip6_dst_store ( newsk , dst , NULL , NULL ) ; inet6_sk_rx_dst_set ( newsk , skb ) ; newtcp6sk = ( struct tcp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newtcp6sk -> inet6 ; newtp = tcp_sk ( newsk ) ; newinet = inet_sk ( newsk ) ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newsk -> sk_v6_daddr = ireq -> ir_v6_rmt_addr ; newnp -> saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_v6_rcv_saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_bound_dev_if = ireq -> ir_iif ; <S2SV_StartBug> newinet -> inet_opt = NULL ; <S2SV_EndBug> newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL ; newnp -> rxopt . all = np -> rxopt . all ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = tcp_v6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; newnp -> rcv_flowinfo = ip6_flowinfo ( ipv6_hdr ( skb ) ) ; if ( np -> repflow ) newnp -> flow_label = ip6_flowlabel ( ipv6_hdr ( skb ) ) ; opt = ireq -> ipv6_opt ; if ( ! opt ) opt = rcu_dereference ( np -> opt ) ; if ( opt ) { opt = ipv6_dup_options ( newsk , opt ) ; RCU_INIT_POINTER ( newnp -> opt , opt ) ; } inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( opt ) inet_csk ( newsk ) -> icsk_ext_hdr_len = opt -> opt_nflen + opt -> opt_flen ; tcp_ca_openreq_child ( newsk , dst ) ; tcp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newtp -> advmss = tcp_mss_clamp ( tcp_sk ( sk ) , dst_metric_advmss ( dst ) ) ; tcp_initialize_rcv_mss ( newsk ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; # ifdef CONFIG_TCP_MD5SIG key = tcp_v6_md5_do_lookup ( sk , & newsk -> sk_v6_daddr ) ; if ( key ) { tcp_md5_do_add ( newsk , ( union tcp_md5_addr * ) & newsk -> sk_v6_daddr , AF_INET6 , key -> key , key -> keylen , sk_gfp_mask ( sk , GFP_ATOMIC ) ) ; } # endif if ( __inet_inherit_port ( sk , newsk ) < 0 ) { inet_csk_prepare_forced_close ( newsk ) ; tcp_done ( newsk ) ; goto out ; } * own_req = inet_ehash_nolisten ( newsk , req_to_sk ( req_unhash ) ) ; if ( * own_req ) { tcp_move_syn ( newtp , req ) ; if ( ireq -> pktopts ) { newnp -> pktoptions = skb_clone ( ireq -> pktopts , sk_gfp_mask ( sk , GFP_ATOMIC ) ) ; consume_skb ( ireq -> pktopts ) ; ireq -> pktopts = NULL ; if ( newnp -> pktoptions ) { tcp_v6_restore_cb ( newnp -> pktoptions ) ; skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } } } return newsk ; out_overflow : __NET_INC_STATS ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : tcp_listendrop ( sk ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif newnp -> ipv6_mc_list = NULL ; newnp -> <S2SV_ModStart> newinet -> inet_opt = NULL ; newnp -> ipv6_mc_list\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1080\n\n```\nCWE-20 static int do_replace ( struct net * net , const void __user * user , unsigned int len ) { int ret , countersize ; struct ebt_table_info * newinfo ; struct ebt_replace tmp ; if ( copy_from_user ( & tmp , user , sizeof ( tmp ) ) != 0 ) return - EFAULT ; if ( len != sizeof ( tmp ) + tmp . entries_size ) { BUGPRINT ( \"Wrong<S2SV_blank>len<S2SV_blank>argument\\\\n\" ) ; return - EINVAL ; } if ( tmp . entries_size == 0 ) { BUGPRINT ( \"Entries_size<S2SV_blank>never<S2SV_blank>zero\\\\n\" ) ; return - EINVAL ; } if ( tmp . nentries >= ( ( INT_MAX - sizeof ( struct ebt_table_info ) ) / NR_CPUS - SMP_CACHE_BYTES ) / sizeof ( struct ebt_counter ) ) return - ENOMEM ; if ( tmp . num_counters >= INT_MAX / sizeof ( struct ebt_counter ) ) return - ENOMEM ; <S2SV_StartBug> countersize = COUNTER_OFFSET ( tmp . nentries ) * nr_cpu_ids ; <S2SV_EndBug> newinfo = vmalloc ( sizeof ( * newinfo ) + countersize ) ; if ( ! newinfo ) return - ENOMEM ; if ( countersize ) memset ( newinfo -> counters , 0 , countersize ) ; newinfo -> entries = vmalloc ( tmp . entries_size ) ; if ( ! newinfo -> entries ) { ret = - ENOMEM ; goto free_newinfo ; } if ( copy_from_user ( newinfo -> entries , tmp . entries , tmp . entries_size ) != 0 ) { BUGPRINT ( \"Couldn\\'t<S2SV_blank>copy<S2SV_blank>entries<S2SV_blank>from<S2SV_blank>userspace\\\\n\" ) ; ret = - EFAULT ; goto free_entries ; } ret = do_replace_finish ( net , & tmp , newinfo ) ; if ( ret == 0 ) return ret ; free_entries : vfree ( newinfo -> entries ) ; free_newinfo : vfree ( newinfo ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOMEM ; tmp . name [ sizeof ( tmp . name ) - 1 ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 static void unix_detach_fds ( struct scm_cookie * scm , struct sk_buff * skb ) { int i ; scm -> fp = UNIXCB ( skb ) . fp ; UNIXCB ( skb ) . fp = NULL ; for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) <S2SV_StartBug> unix_notinflight ( scm -> fp -> fp [ i ] ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> fp -> user , scm -> fp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_denoiser_denoise_mb ( VP8_DENOISER * denoiser , MACROBLOCK * x , unsigned int best_sse , unsigned int zero_mv_sse , int recon_yoffset , <S2SV_StartBug> int recon_uvoffset ) <S2SV_EndBug> { int mv_row ; int mv_col ; <S2SV_StartBug> unsigned int motion_magnitude2 ; <S2SV_EndBug> MV_REFERENCE_FRAME frame = x -> best_reference_frame ; MV_REFERENCE_FRAME zero_frame = x -> best_zeromv_reference_frame ; enum vp8_denoiser_decision decision = FILTER_BLOCK ; <S2SV_StartBug> if ( zero_frame ) <S2SV_EndBug> { YV12_BUFFER_CONFIG * src = & denoiser -> yv12_running_avg [ frame ] ; YV12_BUFFER_CONFIG * dst = & denoiser -> yv12_mc_running_avg ; YV12_BUFFER_CONFIG saved_pre , saved_dst ; MB_MODE_INFO saved_mbmi ; MACROBLOCKD * filter_xd = & x -> e_mbd ; MB_MODE_INFO * mbmi = & filter_xd -> mode_info_context -> mbmi ; <S2SV_StartBug> int sse_diff = zero_mv_sse - best_sse ; <S2SV_EndBug> saved_mbmi = * mbmi ; mbmi -> ref_frame = x -> best_reference_frame ; mbmi -> mode = x -> best_sse_inter_mode ; mbmi -> mv = x -> best_sse_mv ; mbmi -> need_to_clamp_mvs = x -> need_to_clamp_best_mvs ; mv_col = x -> best_sse_mv . as_mv . col ; mv_row = x -> best_sse_mv . as_mv . row ; <S2SV_StartBug> if ( frame == INTRA_FRAME || <S2SV_EndBug> <S2SV_StartBug> ( ( unsigned int ) ( mv_row * mv_row + mv_col * mv_col ) <S2SV_EndBug> <= NOISE_MOTION_THRESHOLD && sse_diff < ( int ) SSE_DIFF_THRESHOLD ) ) { mbmi -> ref_frame = x -> best_zeromv_reference_frame ; src = & denoiser -> yv12_running_avg [ zero_frame ] ; mbmi -> mode = ZEROMV ; mbmi -> mv . as_int = 0 ; x -> best_sse_inter_mode = ZEROMV ; x -> best_sse_mv . as_int = 0 ; best_sse = zero_mv_sse ; } saved_pre = filter_xd -> pre ; saved_dst = filter_xd -> dst ; filter_xd -> pre . y_buffer = src -> y_buffer + recon_yoffset ; filter_xd -> pre . u_buffer = src -> u_buffer + recon_uvoffset ; filter_xd -> pre . v_buffer = src -> v_buffer + recon_uvoffset ; filter_xd -> dst . y_buffer = dst -> y_buffer + recon_yoffset ; filter_xd -> dst . u_buffer = dst -> u_buffer + recon_uvoffset ; filter_xd -> dst . v_buffer = dst -> v_buffer + recon_uvoffset ; if ( ! x -> skip ) { vp8_build_inter_predictors_mb ( filter_xd ) ; } else { vp8_build_inter16x16_predictors_mb ( filter_xd , filter_xd -> dst . y_buffer , filter_xd -> dst . u_buffer , filter_xd -> dst . v_buffer , filter_xd -> dst . y_stride , filter_xd -> dst . uv_stride ) ; } filter_xd -> pre = saved_pre ; filter_xd -> dst = saved_dst ; * mbmi = saved_mbmi ; } mv_row = x -> best_sse_mv . as_mv . row ; mv_col = x -> best_sse_mv . as_mv . col ; motion_magnitude2 = mv_row * mv_row + mv_col * mv_col ; <S2SV_StartBug> if ( best_sse > SSE_THRESHOLD || motion_magnitude2 <S2SV_EndBug> <S2SV_StartBug> > 8 * NOISE_MOTION_THRESHOLD ) <S2SV_EndBug> { decision = COPY_BLOCK ; <S2SV_StartBug> } <S2SV_EndBug> if ( decision == FILTER_BLOCK ) { <S2SV_StartBug> decision = vp8_denoiser_filter ( & denoiser -> yv12_mc_running_avg , <S2SV_EndBug> & denoiser -> yv12_running_avg [ INTRA_FRAME ] , x , motion_magnitude2 , recon_yoffset , recon_uvoffset ) ; } if ( decision == COPY_BLOCK ) { <S2SV_StartBug> vp8_copy_mem16x16 ( <S2SV_EndBug> x -> thismb , 16 , denoiser -> yv12_running_avg [ INTRA_FRAME ] . y_buffer + recon_yoffset , denoiser -> yv12_running_avg [ INTRA_FRAME ] . y_stride ) ; <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int recon_uvoffset , loop_filter_info_n * lfi_n , int mb_row , int mb_col , int block_index <S2SV_ModStart> ; unsigned int motion_threshold ; unsigned int motion_magnitude2 ; unsigned int sse_thresh ; int sse_diff_thresh = 0 ; int apply_spatial_loop_filter = 1 <S2SV_ModEnd> ; MV_REFERENCE_FRAME frame <S2SV_ModStart> = FILTER_BLOCK ; enum vp8_denoiser_decision decision_u = COPY_BLOCK ; enum vp8_denoiser_decision decision_v = COPY_BLOCK ; <S2SV_ModStart> mbmi ; int sse_diff = 0 ; const int zero_bias = denoiser -> denoise_pars . denoise_mv_bias ; zero_mv_sse = ( unsigned int ) ( ( int64_t ) zero_mv_sse * zero_bias / 100 ) ; <S2SV_ModStart> ; if ( ( unsigned int ) ( mv_row * mv_row + mv_col * mv_col ) <= NOISE_MOTION_THRESHOLD ) sse_diff_thresh = ( int ) SSE_DIFF_THRESHOLD ; if ( <S2SV_ModStart> == INTRA_FRAME || sse_diff <= sse_diff_thresh ) { x -> denoise_zeromv = 1 ; mbmi -> ref_frame = x -> best_zeromv_reference_frame ; src = & denoiser -> yv12_running_avg [ zero_frame ] ; mbmi -> mode = ZEROMV ; mbmi -> mv . as_int = 0 ; x -> best_sse_inter_mode = ZEROMV ; x -> best_sse_mv . as_int = 0 ; best_sse = zero_mv_sse ; } saved_pre = filter_xd -> pre ; saved_dst = filter_xd -> dst ; filter_xd -> pre . y_buffer = src -> y_buffer + recon_yoffset ; filter_xd -> pre . u_buffer = src -> u_buffer + recon_uvoffset ; filter_xd -> pre . v_buffer = src -> v_buffer + recon_uvoffset ; filter_xd -> dst . y_buffer = dst -> y_buffer + recon_yoffset ; filter_xd -> dst . u_buffer = dst -> u_buffer + recon_uvoffset ; filter_xd -> dst . v_buffer = dst -> v_buffer + recon_uvoffset ; if ( ! x -> skip ) { vp8_build_inter_predictors_mb ( filter_xd ) ; } else { vp8_build_inter16x16_predictors_mb ( filter_xd , filter_xd -> dst . y_buffer , filter_xd -> dst . u_buffer , filter_xd -> dst . v_buffer , filter_xd -> dst . y_stride , filter_xd -> dst . uv_stride ) ; } filter_xd -> pre = saved_pre ; filter_xd -> dst = saved_dst ; * mbmi = saved_mbmi ; } mv_row = x -> best_sse_mv . as_mv . row ; mv_col = x -> best_sse_mv . as_mv . col ; motion_magnitude2 = mv_row * mv_row <S2SV_ModEnd> + mv_col * <S2SV_ModStart> mv_col * mv_col ; motion_threshold = denoiser -> denoise_pars . scale_motion_thresh * NOISE_MOTION_THRESHOLD ; if ( x -> is_skin ) motion_threshold = 1 ; if ( motion_magnitude2 < denoiser -> denoise_pars . scale_increase_filter * NOISE_MOTION_THRESHOLD ) x -> increase_denoising = 1 ; sse_thresh = denoiser -> denoise_pars . scale_sse_thresh * SSE_THRESHOLD ; if ( x -> increase_denoising ) sse_thresh = denoiser -> denoise_pars . scale_sse_thresh * SSE_THRESHOLD_HIGH <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( best_sse > sse_thresh <S2SV_ModEnd> || motion_magnitude2 > <S2SV_ModStart> || motion_magnitude2 > motion_threshold ) <S2SV_ModEnd> decision = COPY_BLOCK <S2SV_ModStart> = COPY_BLOCK ; <S2SV_ModEnd> if ( decision <S2SV_ModStart> FILTER_BLOCK ) { unsigned char * mc_running_avg_y = denoiser -> yv12_mc_running_avg . y_buffer + recon_yoffset ; int mc_avg_y_stride = denoiser -> yv12_mc_running_avg . y_stride ; unsigned char * running_avg_y = denoiser -> yv12_running_avg [ INTRA_FRAME ] . y_buffer + recon_yoffset ; int avg_y_stride = denoiser -> yv12_running_avg [ INTRA_FRAME ] . y_stride ; <S2SV_ModStart> = vp8_denoiser_filter ( mc_running_avg_y , mc_avg_y_stride , running_avg_y , avg_y_stride , x -> thismb , 16 , motion_magnitude2 , x -> increase_denoising ) ; denoiser -> denoise_state [ block_index ] = motion_magnitude2 > 0 ? kFilterNonZeroMV : kFilterZeroMV ; if ( denoiser -> denoiser_mode != kDenoiserOnYOnly && motion_magnitude2 == 0 && decision == FILTER_BLOCK ) { unsigned char * mc_running_avg_u = <S2SV_ModEnd> denoiser -> yv12_mc_running_avg <S2SV_ModStart> denoiser -> yv12_mc_running_avg . u_buffer + recon_uvoffset ; unsigned char * running_avg_u = denoiser -> yv12_running_avg [ INTRA_FRAME ] . u_buffer + recon_uvoffset ; unsigned char * mc_running_avg_v = denoiser -> yv12_mc_running_avg . v_buffer + recon_uvoffset ; unsigned char * running_avg_v = denoiser -> yv12_running_avg [ INTRA_FRAME ] . v_buffer + recon_uvoffset ; int mc_avg_uv_stride = denoiser -> yv12_mc_running_avg . uv_stride ; int avg_uv_stride = denoiser -> yv12_running_avg [ INTRA_FRAME ] . uv_stride ; int signal_stride = x -> block [ 16 ] . src_stride ; decision_u = vp8_denoiser_filter_uv ( mc_running_avg_u , mc_avg_uv_stride , running_avg_u , avg_uv_stride , x -> block [ 16 ] . src + * x -> block [ 16 ] . base_src , signal_stride , motion_magnitude2 , 0 ) ; decision_v = vp8_denoiser_filter_uv ( mc_running_avg_v , mc_avg_uv_stride , running_avg_v , avg_uv_stride , x -> block [ 20 ] . src + * x -> block [ 20 ] . base_src , signal_stride , motion_magnitude2 , 0 ) ; } <S2SV_ModEnd> } if ( <S2SV_ModStart> COPY_BLOCK ) { x -> denoise_zeromv = 0 ; <S2SV_ModStart> y_stride ) ; denoiser -> denoise_state [ block_index ] = kNoFilter ; } if ( denoiser -> denoiser_mode != kDenoiserOnYOnly ) { if ( decision_u == COPY_BLOCK ) { vp8_copy_mem8x8 ( x -> block [ 16 ] . src + * x -> block [ 16 ] . base_src , x -> block [ 16 ] . src_stride , denoiser -> yv12_running_avg [ INTRA_FRAME ] . u_buffer + recon_uvoffset , denoiser -> yv12_running_avg [ INTRA_FRAME ] . uv_stride ) ; } if ( decision_v == COPY_BLOCK ) { vp8_copy_mem8x8 ( x -> block [ 20 ] . src + * x -> block [ 20 ] . base_src , x -> block [ 16 ] . src_stride , denoiser -> yv12_running_avg [ INTRA_FRAME ] . v_buffer + recon_uvoffset , denoiser -> yv12_running_avg [ INTRA_FRAME ] . uv_stride ) ; } } if ( apply_spatial_loop_filter ) { loop_filter_info lfi ; int apply_filter_col = 0 ; int apply_filter_row = 0 ; int apply_filter = 0 ; int y_stride = denoiser -> yv12_running_avg [ INTRA_FRAME ] . y_stride ; int uv_stride = denoiser -> yv12_running_avg [ INTRA_FRAME ] . uv_stride ; int filter_level = 48 ; int hev_index = lfi_n -> hev_thr_lut [ INTER_FRAME ] [ filter_level ] ; lfi . mblim = lfi_n -> mblim [ filter_level ] ; lfi . blim = lfi_n -> blim [ filter_level ] ; lfi . lim = lfi_n -> lim [ filter_level ] ; lfi . hev_thr = lfi_n -> hev_thr [ hev_index ] ; if ( mb_col > 0 ) { apply_filter_col = ! ( ( denoiser -> denoise_state [ block_index ] == denoiser -> denoise_state [ block_index - 1 ] ) && denoiser -> denoise_state [ block_index ] != kFilterNonZeroMV ) ; if ( apply_filter_col ) { apply_filter = 1 ; vp8_loop_filter_mbv ( denoiser -> yv12_running_avg [ INTRA_FRAME ] . y_buffer + recon_yoffset , NULL , NULL , y_stride , uv_stride , & lfi ) ; } } if ( mb_row > 0 ) { apply_filter_row = ! ( ( denoiser -> denoise_state [ block_index ] == denoiser -> denoise_state [ block_index - denoiser -> num_mb_cols ] ) && denoiser -> denoise_state [ block_index ] != kFilterNonZeroMV ) ; if ( apply_filter_row ) { apply_filter = 1 ; vp8_loop_filter_mbh ( denoiser -> yv12_running_avg [ INTRA_FRAME ] . y_buffer + recon_yoffset , NULL , NULL , y_stride , uv_stride , & lfi ) ; } } if ( apply_filter ) { vp8_copy_mem16x16 ( denoiser -> yv12_running_avg [ INTRA_FRAME ] . y_buffer + recon_yoffset , y_stride , x -> thismb , 16 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14363\n\n```\nCWE-22 static int msg_cache_check ( const char * id , struct BodyCache * bcache , void * data ) { struct Context * ctx = ( struct Context * ) data ; if ( ! ctx ) return - 1 ; struct PopData * pop_data = ( struct PopData * ) ctx -> data ; if ( ! pop_data ) return - 1 ; # ifdef USE_HCACHE if ( strcmp ( HC_FNAME \".\" HC_FEXT , id ) == 0 ) return 0 ; # endif for ( int i = 0 ; i < ctx -> msgcount ; i ++ ) { if ( ctx -> hdrs [ i ] -> data && ( mutt_str_strcmp ( ctx -> hdrs [ i ] -> data , id ) == 0 ) ) return 0 ; } <S2SV_StartBug> return mutt_bcache_del ( bcache , id ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( bcache , cache_id ( id ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static bool check_underflow ( const struct ipt_entry * e ) { const struct xt_entry_target * t ; unsigned int verdict ; <S2SV_StartBug> if ( ! unconditional ( & e -> ip ) ) <S2SV_EndBug> return false ; t = ipt_get_target_c ( e ) ; if ( strcmp ( t -> u . user . name , XT_STANDARD_TARGET ) != 0 ) return false ; verdict = ( ( struct xt_standard_target * ) t ) -> verdict ; verdict = - verdict - 1 ; return verdict == NF_DROP || verdict == NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! unconditional ( e <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3230\n\n```\nCWE-200 static int l2tp_ip6_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct sockaddr_l2tpip6 * lsa = ( struct sockaddr_l2tpip6 * ) msg -> msg_name ; size_t copied = 0 ; int err = - EOPNOTSUPP ; struct sk_buff * skb ; if ( flags & MSG_OOB ) goto out ; if ( addr_len ) * addr_len = sizeof ( * lsa ) ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len ) ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_timestamp ( msg , sk , skb ) ; if ( lsa ) { lsa -> l2tp_family = AF_INET6 ; lsa -> l2tp_unused = 0 ; lsa -> l2tp_addr = ipv6_hdr ( skb ) -> saddr ; lsa -> l2tp_flowinfo = 0 ; lsa -> l2tp_scope_id = 0 ; <S2SV_StartBug> if ( ipv6_addr_type ( & lsa -> l2tp_addr ) & IPV6_ADDR_LINKLOCAL ) <S2SV_EndBug> lsa -> l2tp_scope_id = IP6CB ( skb ) -> iif ; } if ( np -> rxopt . all ) ip6_datagram_recv_ctl ( sk , msg , skb ) ; if ( flags & MSG_TRUNC ) copied = skb -> len ; done : skb_free_datagram ( sk , skb ) ; out : return err ? err : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; lsa -> l2tp_conn_id = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 int kvm_arch_vcpu_init ( struct kvm_vcpu * vcpu ) { struct page * page ; struct kvm * kvm ; int r ; BUG_ON ( vcpu -> kvm == NULL ) ; kvm = vcpu -> kvm ; vcpu -> arch . emulate_ctxt . ops = & emulate_ops ; if ( ! irqchip_in_kernel ( kvm ) || kvm_vcpu_is_bsp ( vcpu ) ) vcpu -> arch . mp_state = KVM_MP_STATE_RUNNABLE ; else vcpu -> arch . mp_state = KVM_MP_STATE_UNINITIALIZED ; page = alloc_page ( GFP_KERNEL | __GFP_ZERO ) ; if ( ! page ) { r = - ENOMEM ; goto fail ; } vcpu -> arch . pio_data = page_address ( page ) ; kvm_set_tsc_khz ( vcpu , max_tsc_khz ) ; r = kvm_mmu_create ( vcpu ) ; if ( r < 0 ) goto fail_free_pio_data ; if ( irqchip_in_kernel ( kvm ) ) { r = kvm_create_lapic ( vcpu ) ; if ( r < 0 ) goto fail_mmu_destroy ; } else static_key_slow_inc ( & kvm_no_apic_vcpu ) ; vcpu -> arch . mce_banks = kzalloc ( KVM_MAX_MCE_BANKS * sizeof ( u64 ) * 4 , GFP_KERNEL ) ; if ( ! vcpu -> arch . mce_banks ) { r = - ENOMEM ; goto fail_free_lapic ; } vcpu -> arch . mcg_cap = KVM_MAX_MCE_BANKS ; if ( ! zalloc_cpumask_var ( & vcpu -> arch . wbinvd_dirty_mask , GFP_KERNEL ) ) goto fail_free_mce_banks ; r = fx_init ( vcpu ) ; if ( r ) goto fail_free_wbinvd_dirty_mask ; vcpu -> arch . ia32_tsc_adjust_msr = 0x0 ; <S2SV_StartBug> kvm_async_pf_hash_reset ( vcpu ) ; <S2SV_EndBug> kvm_pmu_init ( vcpu ) ; return 0 ; fail_free_wbinvd_dirty_mask : free_cpumask_var ( vcpu -> arch . wbinvd_dirty_mask ) ; fail_free_mce_banks : kfree ( vcpu -> arch . mce_banks ) ; fail_free_lapic : kvm_free_lapic ( vcpu ) ; fail_mmu_destroy : kvm_mmu_destroy ( vcpu ) ; fail_free_pio_data : free_page ( ( unsigned long ) vcpu -> arch . pio_data ) ; fail : return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0x0 ; vcpu -> arch . pv_time_enabled = false ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 struct timespec ns_to_timespec ( const s64 nsec ) { <S2SV_StartBug> struct timespec ts ; <S2SV_EndBug> if ( ! nsec ) return ( struct timespec ) { 0 , 0 } ; <S2SV_StartBug> ts . tv_sec = div_long_long_rem_signed ( nsec , NSEC_PER_SEC , & ts . tv_nsec ) ; <S2SV_EndBug> <S2SV_StartBug> if ( unlikely ( nsec < 0 ) ) <S2SV_EndBug> <S2SV_StartBug> set_normalized_timespec ( & ts , ts . tv_sec , ts . tv_nsec ) ; <S2SV_EndBug> return ts ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct timespec ts ; s32 rem <S2SV_ModStart> . tv_sec = div_s64_rem <S2SV_ModEnd> ( nsec , <S2SV_ModStart> NSEC_PER_SEC , & rem <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( unlikely ( rem <S2SV_ModEnd> < 0 ) <S2SV_ModStart> 0 ) ) { <S2SV_ModEnd> ts . tv_sec <S2SV_ModStart> ts . tv_sec -- ; rem += NSEC_PER_SEC ; } <S2SV_ModEnd> ts . tv_nsec <S2SV_ModStart> ts . tv_nsec = rem <S2SV_ModEnd> ; return ts\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7145\n\n```\nCWE-399 int SMB2_tcon ( const unsigned int xid , struct cifs_ses * ses , const char * tree , struct cifs_tcon * tcon , const struct nls_table * cp ) { struct smb2_tree_connect_req * req ; struct smb2_tree_connect_rsp * rsp = NULL ; struct kvec iov [ 2 ] ; int rc = 0 ; int resp_buftype ; int unc_path_len ; struct TCP_Server_Info * server ; __le16 * unc_path = NULL ; cifs_dbg ( FYI , \"TCON\\\\n\" ) ; if ( ( ses -> server ) && tree ) server = ses -> server ; else return - EIO ; if ( tcon && tcon -> bad_network_name ) return - ENOENT ; unc_path = kmalloc ( MAX_SHARENAME_LENGTH * 2 , GFP_KERNEL ) ; if ( unc_path == NULL ) return - ENOMEM ; unc_path_len = cifs_strtoUTF16 ( unc_path , tree , strlen ( tree ) , cp ) + 1 ; unc_path_len *= 2 ; if ( unc_path_len < 2 ) { kfree ( unc_path ) ; return - EINVAL ; } rc = small_smb2_init ( SMB2_TREE_CONNECT , tcon , ( void * * ) & req ) ; if ( rc ) { kfree ( unc_path ) ; return rc ; } if ( tcon == NULL ) { req -> hdr . SessionId = ses -> Suid ; } iov [ 0 ] . iov_base = ( char * ) req ; iov [ 0 ] . iov_len = get_rfc1002_length ( req ) + 4 - 1 ; req -> PathOffset = cpu_to_le16 ( sizeof ( struct smb2_tree_connect_req ) - 1 - 4 ) ; req -> PathLength = cpu_to_le16 ( unc_path_len - 2 ) ; iov [ 1 ] . iov_base = unc_path ; iov [ 1 ] . iov_len = unc_path_len ; inc_rfc1001_len ( req , unc_path_len - 1 ) ; rc = SendReceive2 ( xid , ses , iov , 2 , & resp_buftype , 0 ) ; rsp = ( struct smb2_tree_connect_rsp * ) iov [ 0 ] . iov_base ; if ( rc != 0 ) { if ( tcon ) { cifs_stats_fail_inc ( tcon , SMB2_TREE_CONNECT_HE ) ; tcon -> need_reconnect = true ; } goto tcon_error_exit ; } if ( tcon == NULL ) { ses -> ipc_tid = rsp -> hdr . TreeId ; goto tcon_exit ; } if ( rsp -> ShareType & SMB2_SHARE_TYPE_DISK ) cifs_dbg ( FYI , \"connection<S2SV_blank>to<S2SV_blank>disk<S2SV_blank>share\\\\n\" ) ; else if ( rsp -> ShareType & SMB2_SHARE_TYPE_PIPE ) { tcon -> ipc = true ; cifs_dbg ( FYI , \"connection<S2SV_blank>to<S2SV_blank>pipe<S2SV_blank>share\\\\n\" ) ; } else if ( rsp -> ShareType & SMB2_SHARE_TYPE_PRINT ) { tcon -> print = true ; cifs_dbg ( FYI , \"connection<S2SV_blank>to<S2SV_blank>printer\\\\n\" ) ; } else { cifs_dbg ( VFS , \"unknown<S2SV_blank>share<S2SV_blank>type<S2SV_blank>%d\\\\n\" , rsp -> ShareType ) ; rc = - EOPNOTSUPP ; goto tcon_error_exit ; } tcon -> share_flags = le32_to_cpu ( rsp -> ShareFlags ) ; tcon -> capabilities = rsp -> Capabilities ; tcon -> maximal_access = le32_to_cpu ( rsp -> MaximalAccess ) ; tcon -> tidStatus = CifsGood ; tcon -> need_reconnect = false ; tcon -> tid = rsp -> hdr . TreeId ; strlcpy ( tcon -> treeName , tree , sizeof ( tcon -> treeName ) ) ; if ( ( rsp -> Capabilities & SMB2_SHARE_CAP_DFS ) && ( ( tcon -> share_flags & SHI1005_FLAGS_DFS ) == 0 ) ) cifs_dbg ( VFS , \"DFS<S2SV_blank>capability<S2SV_blank>contradicts<S2SV_blank>DFS<S2SV_blank>flag\\\\n\" ) ; init_copy_chunk_defaults ( tcon ) ; if ( tcon -> ses -> server -> ops -> validate_negotiate ) rc = tcon -> ses -> server -> ops -> validate_negotiate ( xid , tcon ) ; tcon_exit : free_rsp_buf ( resp_buftype , rsp ) ; kfree ( unc_path ) ; return rc ; tcon_error_exit : if ( rsp -> hdr . Status == STATUS_BAD_NETWORK_NAME ) { cifs_dbg ( VFS , \"BAD_NETWORK_NAME:<S2SV_blank>%s\\\\n\" , tree ) ; <S2SV_StartBug> tcon -> bad_network_name = true ; <S2SV_EndBug> } goto tcon_exit ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tree ) ; if ( tcon )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 void skb_complete_tx_timestamp ( struct sk_buff * skb , struct skb_shared_hwtstamps * hwtstamps ) { struct sock * sk = skb -> sk ; if ( ! skb_may_tx_timestamp ( sk , false ) ) return ; if ( likely ( atomic_inc_not_zero ( & sk -> sk_refcnt ) ) ) { * skb_hwtstamps ( skb ) = * hwtstamps ; <S2SV_StartBug> __skb_complete_tx_timestamp ( skb , sk , SCM_TSTAMP_SND ) ; <S2SV_EndBug> sock_put ( sk ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk , SCM_TSTAMP_SND , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-32020\n\n```\nCWE-119 void * pvPortMalloc ( size_t xWantedSize ) { BlockLink_t * pxBlock , * pxPreviousBlock , * pxNewBlockLink ; void * pvReturn = NULL ; vTaskSuspendAll ( ) ; { if ( pxEnd == NULL ) { prvHeapInit ( ) ; } else { mtCOVERAGE_TEST_MARKER ( ) ; } if ( ( xWantedSize & xBlockAllocatedBit ) == 0 ) { <S2SV_StartBug> if ( xWantedSize > 0 ) <S2SV_EndBug> { xWantedSize += xHeapStructSize ; if ( ( xWantedSize & portBYTE_ALIGNMENT_MASK ) != 0x00 ) { <S2SV_StartBug> xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) ) ; <S2SV_EndBug> configASSERT ( ( xWantedSize & portBYTE_ALIGNMENT_MASK ) == 0 ) ; } else { <S2SV_StartBug> mtCOVERAGE_TEST_MARKER ( ) ; <S2SV_EndBug> } } else { mtCOVERAGE_TEST_MARKER ( ) ; } if ( ( xWantedSize > 0 ) && ( xWantedSize <= xFreeBytesRemaining ) ) { pxPreviousBlock = & xStart ; pxBlock = xStart . pxNextFreeBlock ; while ( ( pxBlock -> xBlockSize < xWantedSize ) && ( pxBlock -> pxNextFreeBlock != NULL ) ) { pxPreviousBlock = pxBlock ; pxBlock = pxBlock -> pxNextFreeBlock ; } if ( pxBlock != pxEnd ) { pvReturn = ( void * ) ( ( ( uint8_t * ) pxPreviousBlock -> pxNextFreeBlock ) + xHeapStructSize ) ; pxPreviousBlock -> pxNextFreeBlock = pxBlock -> pxNextFreeBlock ; if ( ( pxBlock -> xBlockSize - xWantedSize ) > heapMINIMUM_BLOCK_SIZE ) { pxNewBlockLink = ( void * ) ( ( ( uint8_t * ) pxBlock ) + xWantedSize ) ; configASSERT ( ( ( ( size_t ) pxNewBlockLink ) & portBYTE_ALIGNMENT_MASK ) == 0 ) ; pxNewBlockLink -> xBlockSize = pxBlock -> xBlockSize - xWantedSize ; pxBlock -> xBlockSize = xWantedSize ; prvInsertBlockIntoFreeList ( pxNewBlockLink ) ; } else { mtCOVERAGE_TEST_MARKER ( ) ; } xFreeBytesRemaining -= pxBlock -> xBlockSize ; if ( xFreeBytesRemaining < xMinimumEverFreeBytesRemaining ) { xMinimumEverFreeBytesRemaining = xFreeBytesRemaining ; } else { mtCOVERAGE_TEST_MARKER ( ) ; } pxBlock -> xBlockSize |= xBlockAllocatedBit ; pxBlock -> pxNextFreeBlock = NULL ; xNumberOfSuccessfulAllocations ++ ; } else { mtCOVERAGE_TEST_MARKER ( ) ; } } else { mtCOVERAGE_TEST_MARKER ( ) ; } } else { mtCOVERAGE_TEST_MARKER ( ) ; } traceMALLOC ( pvReturn , xWantedSize ) ; } ( void ) xTaskResumeAll ( ) ; # if ( configUSE_MALLOC_FAILED_HOOK == 1 ) { if ( pvReturn == NULL ) { extern void vApplicationMallocFailedHook ( void ) ; vApplicationMallocFailedHook ( ) ; } else { mtCOVERAGE_TEST_MARKER ( ) ; } } # endif configASSERT ( ( ( ( size_t ) pvReturn ) & ( size_t ) portBYTE_ALIGNMENT_MASK ) == 0 ) ; return pvReturn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ( <S2SV_ModStart> xWantedSize > 0 ) && ( ( xWantedSize + xHeapStructSize ) > xWantedSize ) <S2SV_ModStart> 0x00 ) { if ( ( xWantedSize + <S2SV_ModEnd> ( portBYTE_ALIGNMENT - <S2SV_ModStart> portBYTE_ALIGNMENT_MASK ) ) ) > xWantedSize ) { xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) ) <S2SV_ModStart> } else { xWantedSize = 0 ; } } else { mtCOVERAGE_TEST_MARKER ( ) ; } } else { xWantedSize = 0 <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1417\n\n```\nCWE-20 static krb5_int32 find_referral_tgs ( kdc_realm_t * kdc_active_realm , krb5_kdc_req * request , krb5_principal * krbtgt_princ ) { krb5_error_code retval = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; char * * realms = NULL , * hostname = NULL ; krb5_data srealm = request -> server -> realm ; if ( ! is_referral_req ( kdc_active_realm , request ) ) goto cleanup ; hostname = data2string ( krb5_princ_component ( kdc_context , request -> server , 1 ) ) ; if ( hostname == NULL ) { retval = ENOMEM ; goto cleanup ; } if ( strchr ( hostname , '.' ) == NULL ) goto cleanup ; retval = krb5_get_host_realm ( kdc_context , hostname , & realms ) ; if ( retval ) { kdc_err ( kdc_context , retval , \"unable<S2SV_blank>to<S2SV_blank>find<S2SV_blank>realm<S2SV_blank>of<S2SV_blank>host\" ) ; goto cleanup ; } <S2SV_StartBug> if ( realms == NULL || realms [ 0 ] == '\\\\0' || <S2SV_EndBug> data_eq_string ( srealm , realms [ 0 ] ) ) { retval = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; goto cleanup ; } retval = krb5_build_principal ( kdc_context , krbtgt_princ , srealm . length , srealm . data , \"krbtgt\" , realms [ 0 ] , ( char * ) 0 ) ; cleanup : krb5_free_host_realm ( kdc_context , realms ) ; free ( hostname ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ] == NULL || * realms [ 0 ] ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int read_mv_component ( vp9_reader * r , <S2SV_EndBug> const nmv_component * mvcomp , int usehp ) { int mag , d , fr , hp ; <S2SV_StartBug> const int sign = vp9_read ( r , mvcomp -> sign ) ; <S2SV_EndBug> <S2SV_StartBug> const int mv_class = vp9_read_tree ( r , vp9_mv_class_tree , mvcomp -> classes ) ; <S2SV_EndBug> const int class0 = mv_class == MV_CLASS_0 ; if ( class0 ) { <S2SV_StartBug> d = vp9_read_tree ( r , vp9_mv_class0_tree , mvcomp -> class0 ) ; <S2SV_EndBug> } else { int i ; const int n = mv_class + CLASS0_BITS - 1 ; d = 0 ; for ( i = 0 ; i < n ; ++ i ) <S2SV_StartBug> d |= vp9_read ( r , mvcomp -> bits [ i ] ) << i ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> fr = vp9_read_tree ( r , vp9_mv_fp_tree , class0 ? mvcomp -> class0_fp [ d ] <S2SV_EndBug> : mvcomp -> fp ) ; <S2SV_StartBug> hp = usehp ? vp9_read ( r , class0 ? mvcomp -> class0_hp : mvcomp -> hp ) <S2SV_EndBug> : 1 ; <S2SV_StartBug> mag = vp9_get_mv_mag ( mv_class , ( d << 3 ) | ( fr << 1 ) | hp ) + 1 ; <S2SV_EndBug> return sign ? - mag : mag ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int read_mv_component ( vpx_reader <S2SV_ModEnd> * r , <S2SV_ModStart> int sign = vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> int mv_class = vpx_read_tree <S2SV_ModEnd> ( r , <S2SV_ModStart> { d = vpx_read_tree <S2SV_ModEnd> ( r , <S2SV_ModStart> -> class0 ) ; mag = 0 <S2SV_ModStart> ) d |= vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> << i ; mag = CLASS0_SIZE << ( mv_class + 2 ) ; <S2SV_ModStart> } fr = vpx_read_tree <S2SV_ModEnd> ( r , <S2SV_ModStart> = usehp ? vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> 1 ; mag += ( <S2SV_ModEnd> ( d <<\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1066\n\n```\nCWE-476 void build_ntlmssp_negotiate_blob ( unsigned char * pbuffer , struct cifs_ses * ses ) { NEGOTIATE_MESSAGE * sec_blob = ( NEGOTIATE_MESSAGE * ) pbuffer ; __u32 flags ; memset ( pbuffer , 0 , sizeof ( NEGOTIATE_MESSAGE ) ) ; memcpy ( sec_blob -> Signature , NTLMSSP_SIGNATURE , 8 ) ; sec_blob -> MessageType = NtLmNegotiate ; flags = NTLMSSP_NEGOTIATE_56 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE | <S2SV_StartBug> NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC ; <S2SV_EndBug> <S2SV_StartBug> if ( ses -> server -> sign ) { <S2SV_EndBug> flags |= NTLMSSP_NEGOTIATE_SIGN ; if ( ! ses -> server -> session_estab || ses -> ntlmssp -> sesskey_per_smbsess ) flags |= NTLMSSP_NEGOTIATE_KEY_XCH ; <S2SV_StartBug> } <S2SV_EndBug> sec_blob -> NegotiateFlags = cpu_to_le32 ( flags ) ; sec_blob -> WorkstationName . BufferOffset = 0 ; sec_blob -> WorkstationName . Length = 0 ; sec_blob -> WorkstationName . MaximumLength = 0 ; sec_blob -> DomainName . BufferOffset = 0 ; sec_blob -> DomainName . Length = 0 ; sec_blob -> DomainName . MaximumLength = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC | NTLMSSP_NEGOTIATE_SEAL <S2SV_ModStart> -> sign ) <S2SV_ModEnd> flags |= NTLMSSP_NEGOTIATE_SIGN <S2SV_ModStart> |= NTLMSSP_NEGOTIATE_KEY_XCH ; <S2SV_ModEnd> sec_blob -> NegotiateFlags\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1182\n\n```\nCWE-000 SYSCALL_DEFINE3 ( rt_sigqueueinfo , pid_t , pid , int , sig , siginfo_t __user * , uinfo ) { siginfo_t info ; if ( copy_from_user ( & info , uinfo , sizeof ( siginfo_t ) ) ) return - EFAULT ; <S2SV_StartBug> if ( info . si_code >= 0 ) <S2SV_EndBug> <S2SV_StartBug> return - EPERM ; <S2SV_EndBug> info . si_signo = sig ; return kill_proc_info ( sig , & info , pid ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> info . si_code != SI_QUEUE ) { WARN_ON_ONCE ( info . si_code < 0 ) ; <S2SV_ModEnd> return - EPERM <S2SV_ModStart> - EPERM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1334\n\n```\nCWE-17 static int attach_child_main ( void * data ) { struct attach_clone_payload * payload = ( struct attach_clone_payload * ) data ; int ipc_socket = payload -> ipc_socket ; <S2SV_StartBug> lxc_attach_options_t * options = payload -> options ; <S2SV_EndBug> struct lxc_proc_context_info * init_ctx = payload -> init_ctx ; # if HAVE_SYS_PERSONALITY_H long new_personality ; # endif int ret ; int status ; int expected ; long flags ; int fd ; uid_t new_uid ; gid_t new_gid ; expected = 0 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_socket , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>(0)\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( ! ( options -> namespaces & CLONE_NEWNS ) && ( options -> attach_flags & LXC_ATTACH_REMOUNT_PROC_SYS ) ) { ret = lxc_attach_remount_sys_proc ( ) ; if ( ret < 0 ) { shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } # if HAVE_SYS_PERSONALITY_H if ( options -> personality < 0 ) new_personality = init_ctx -> personality ; else new_personality = options -> personality ; if ( options -> attach_flags & LXC_ATTACH_SET_PERSONALITY ) { ret = personality ( new_personality ) ; if ( ret < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>ensure<S2SV_blank>correct<S2SV_blank>architecture\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } # endif if ( options -> attach_flags & LXC_ATTACH_DROP_CAPABILITIES ) { ret = lxc_attach_drop_privs ( init_ctx ) ; if ( ret < 0 ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>drop<S2SV_blank>privileges\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } ret = lxc_attach_set_environment ( options -> env_policy , options -> extra_env_vars , options -> extra_keep_env ) ; if ( ret < 0 ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>initial<S2SV_blank>environment<S2SV_blank>for<S2SV_blank>attached<S2SV_blank>process\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } new_uid = 0 ; new_gid = 0 ; if ( options -> namespaces & CLONE_NEWUSER ) lxc_attach_get_init_uidgid ( & new_uid , & new_gid ) ; if ( options -> uid != ( uid_t ) - 1 ) new_uid = options -> uid ; if ( options -> gid != ( gid_t ) - 1 ) new_gid = options -> gid ; if ( options -> stdin_fd && isatty ( options -> stdin_fd ) ) { if ( setsid ( ) < 0 ) { SYSERROR ( \"unable<S2SV_blank>to<S2SV_blank>setsid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( ioctl ( options -> stdin_fd , TIOCSCTTY , ( char * ) NULL ) < 0 ) { SYSERROR ( \"unable<S2SV_blank>to<S2SV_blank>TIOCSTTY\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } if ( ( new_gid != 0 || options -> namespaces & CLONE_NEWUSER ) ) { if ( setgid ( new_gid ) || setgroups ( 0 , NULL ) ) { SYSERROR ( \"switching<S2SV_blank>to<S2SV_blank>container<S2SV_blank>gid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } if ( ( new_uid != 0 || options -> namespaces & CLONE_NEWUSER ) && setuid ( new_uid ) ) { SYSERROR ( \"switching<S2SV_blank>to<S2SV_blank>container<S2SV_blank>uid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } status = 1 ; ret = lxc_write_nointr ( ipc_socket , & status , sizeof ( status ) ) ; if ( ret != sizeof ( status ) ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(1)\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } expected = 2 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_socket , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>final<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>(2)\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } shutdown ( ipc_socket , SHUT_RDWR ) ; close ( ipc_socket ) ; <S2SV_StartBug> if ( ( options -> namespaces & CLONE_NEWNS ) && ( options -> attach_flags & LXC_ATTACH_LSM ) ) { <S2SV_EndBug> int on_exec ; <S2SV_StartBug> int proc_mounted ; <S2SV_EndBug> on_exec = options -> attach_flags & LXC_ATTACH_LSM_EXEC ? 1 : 0 ; <S2SV_StartBug> proc_mounted = mount_proc_if_needed ( \"/\" ) ; <S2SV_EndBug> if ( proc_mounted == - 1 ) { ERROR ( \"Error<S2SV_blank>mounting<S2SV_blank>a<S2SV_blank>sane<S2SV_blank>/proc\" ) ; rexit ( - 1 ) ; } <S2SV_StartBug> ret = lsm_process_label_set ( init_ctx -> lsm_label , <S2SV_EndBug> init_ctx -> container -> lxc_conf , 0 , on_exec ) ; if ( proc_mounted ) umount ( \"/proc\" ) ; if ( ret < 0 ) { rexit ( - 1 ) ; } } if ( init_ctx -> container && init_ctx -> container -> lxc_conf && lxc_seccomp_load ( init_ctx -> container -> lxc_conf ) != 0 ) { ERROR ( \"Loading<S2SV_blank>seccomp<S2SV_blank>policy\" ) ; rexit ( - 1 ) ; } lxc_proc_put_context_info ( init_ctx ) ; if ( options -> stdin_fd >= 0 && options -> stdin_fd != 0 ) dup2 ( options -> stdin_fd , 0 ) ; if ( options -> stdout_fd >= 0 && options -> stdout_fd != 1 ) dup2 ( options -> stdout_fd , 1 ) ; if ( options -> stderr_fd >= 0 && options -> stderr_fd != 2 ) dup2 ( options -> stderr_fd , 2 ) ; if ( options -> stdin_fd > 2 ) close ( options -> stdin_fd ) ; if ( options -> stdout_fd > 2 ) close ( options -> stdout_fd ) ; if ( options -> stderr_fd > 2 ) close ( options -> stderr_fd ) ; for ( fd = 0 ; fd <= 2 ; fd ++ ) { flags = fcntl ( fd , F_GETFL ) ; if ( flags < 0 ) continue ; if ( flags & FD_CLOEXEC ) { if ( fcntl ( fd , F_SETFL , flags & ~ FD_CLOEXEC ) < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>clear<S2SV_blank>CLOEXEC<S2SV_blank>from<S2SV_blank>fd\" ) ; } } } <S2SV_StartBug> rexit ( payload -> exec_function ( payload -> exec_payload ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ipc_socket ; int procfd = payload -> procfd ; <S2SV_ModStart> & LXC_ATTACH_LSM ) && init_ctx -> lsm_label <S2SV_ModStart> int on_exec ; <S2SV_ModEnd> on_exec = options <S2SV_ModStart> : 0 ; if ( lsm_set_label_at ( procfd , on_exec , <S2SV_ModEnd> init_ctx -> lsm_label <S2SV_ModStart> init_ctx -> lsm_label ) <S2SV_ModEnd> < 0 ) <S2SV_ModStart> } } } close ( procfd ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 <S2SV_StartBug> static void evtchn_2l_handle_events ( unsigned cpu ) <S2SV_EndBug> { int irq ; xen_ulong_t pending_words ; xen_ulong_t pending_bits ; int start_word_idx , start_bit_idx ; int word_idx , bit_idx ; int i ; struct shared_info * s = HYPERVISOR_shared_info ; struct vcpu_info * vcpu_info = __this_cpu_read ( xen_vcpu ) ; irq = irq_from_virq ( cpu , VIRQ_TIMER ) ; if ( irq != - 1 ) { evtchn_port_t evtchn = evtchn_from_irq ( irq ) ; word_idx = evtchn / BITS_PER_LONG ; bit_idx = evtchn % BITS_PER_LONG ; if ( active_evtchns ( cpu , s , word_idx ) & ( 1ULL << bit_idx ) ) generic_handle_irq ( irq ) ; } pending_words = xchg_xen_ulong ( & vcpu_info -> evtchn_pending_sel , 0 ) ; start_word_idx = __this_cpu_read ( current_word_idx ) ; start_bit_idx = __this_cpu_read ( current_bit_idx ) ; word_idx = start_word_idx ; for ( i = 0 ; pending_words != 0 ; i ++ ) { xen_ulong_t words ; words = MASK_LSBS ( pending_words , word_idx ) ; if ( words == 0 ) { word_idx = 0 ; bit_idx = 0 ; continue ; } word_idx = EVTCHN_FIRST_BIT ( words ) ; pending_bits = active_evtchns ( cpu , s , word_idx ) ; bit_idx = 0 ; if ( word_idx == start_word_idx ) { if ( i == 0 ) bit_idx = start_bit_idx ; } do { xen_ulong_t bits ; evtchn_port_t port ; bits = MASK_LSBS ( pending_bits , bit_idx ) ; if ( bits == 0 ) break ; bit_idx = EVTCHN_FIRST_BIT ( bits ) ; port = ( word_idx * BITS_PER_EVTCHN_WORD ) + bit_idx ; <S2SV_StartBug> irq = get_evtchn_to_irq ( port ) ; <S2SV_EndBug> if ( irq != - 1 ) generic_handle_irq ( irq ) ; bit_idx = ( bit_idx + 1 ) % BITS_PER_EVTCHN_WORD ; __this_cpu_write ( current_word_idx , bit_idx ? word_idx : ( word_idx + 1 ) % BITS_PER_EVTCHN_WORD ) ; __this_cpu_write ( current_bit_idx , bit_idx ) ; } while ( bit_idx != 0 ) ; if ( ( word_idx != start_word_idx ) || ( i != 0 ) ) pending_words &= ~ ( 1UL << word_idx ) ; word_idx = ( word_idx + 1 ) % BITS_PER_EVTCHN_WORD ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( unsigned cpu , struct evtchn_loop_ctrl * ctrl <S2SV_ModStart> + bit_idx ; handle_irq_for_port ( port , ctrl <S2SV_ModEnd> ) ; bit_idx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14064\n\n```\nCWE-119 static VALUE cState_space_set ( VALUE self , VALUE space ) { unsigned long len ; GET_STATE ( self ) ; Check_Type ( space , T_STRING ) ; len = RSTRING_LEN ( space ) ; if ( len == 0 ) { if ( state -> space ) { ruby_xfree ( state -> space ) ; state -> space = NULL ; state -> space_len = 0 ; } } else { if ( state -> space ) ruby_xfree ( state -> space ) ; <S2SV_StartBug> state -> space = strdup ( RSTRING_PTR ( space ) ) ; <S2SV_EndBug> state -> space_len = len ; } return Qnil ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> space = fstrndup <S2SV_ModEnd> ( RSTRING_PTR ( <S2SV_ModStart> ( space ) , len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1180\n\n```\nCWE-119 static void iriap_getvaluebyclass_indication ( struct iriap_cb * self , struct sk_buff * skb ) { struct ias_object * obj ; struct ias_attrib * attrib ; int name_len ; int attr_len ; char name [ IAS_MAX_CLASSNAME + 1 ] ; char attr [ IAS_MAX_ATTRIBNAME + 1 ] ; __u8 * fp ; int n ; IRDA_DEBUG ( 4 , \"%s()\\\\n\" , __func__ ) ; IRDA_ASSERT ( self != NULL , return ; ) ; IRDA_ASSERT ( self -> magic == IAS_MAGIC , return ; ) ; IRDA_ASSERT ( skb != NULL , return ; ) ; fp = skb -> data ; n = 1 ; name_len = fp [ n ++ ] ; <S2SV_StartBug> memcpy ( name , fp + n , name_len ) ; n += name_len ; <S2SV_EndBug> name [ name_len ] = '\\\\0' ; <S2SV_StartBug> attr_len = fp [ n ++ ] ; <S2SV_EndBug> memcpy ( attr , fp + n , attr_len ) ; n += attr_len ; attr [ attr_len ] = '\\\\0' ; IRDA_DEBUG ( 4 , \"LM-IAS:<S2SV_blank>Looking<S2SV_blank>up<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , name , attr ) ; obj = irias_find_object ( name ) ; if ( obj == NULL ) { IRDA_DEBUG ( 2 , \"LM-IAS:<S2SV_blank>Object<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>found\\\\n\" , name ) ; iriap_getvaluebyclass_response ( self , 0x1235 , IAS_CLASS_UNKNOWN , & irias_missing ) ; return ; } IRDA_DEBUG ( 4 , \"LM-IAS:<S2SV_blank>found<S2SV_blank>%s,<S2SV_blank>id=%d\\\\n\" , obj -> name , obj -> id ) ; attrib = irias_find_attrib ( obj , attr ) ; if ( attrib == NULL ) { IRDA_DEBUG ( 2 , \"LM-IAS:<S2SV_blank>Attribute<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>found\\\\n\" , attr ) ; iriap_getvaluebyclass_response ( self , obj -> id , IAS_ATTRIB_UNKNOWN , & irias_missing ) ; return ; } iriap_getvaluebyclass_response ( self , obj -> id , IAS_SUCCESS , attrib -> value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ] ; IRDA_ASSERT ( name_len < IAS_MAX_CLASSNAME + 1 , return ; ) ; <S2SV_ModStart> n ++ ] ; IRDA_ASSERT ( attr_len < IAS_MAX_ATTRIBNAME + 1 , return ; )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-770(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14405\n\n```\nCWE-770 rfbBool HandleRFBServerMessage ( rfbClient * client ) { rfbServerToClientMsg msg ; if ( client -> serverPort == - 1 ) client -> vncRec -> readTimestamp = TRUE ; if ( ! ReadFromRFBServer ( client , ( char * ) & msg , 1 ) ) return FALSE ; switch ( msg . type ) { case rfbSetColourMapEntries : { break ; } case rfbFramebufferUpdate : { rfbFramebufferUpdateRectHeader rect ; int linesToRead ; int bytesPerLine ; int i ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg . fu ) + 1 , sz_rfbFramebufferUpdateMsg - 1 ) ) return FALSE ; msg . fu . nRects = rfbClientSwap16IfLE ( msg . fu . nRects ) ; for ( i = 0 ; i < msg . fu . nRects ; i ++ ) { if ( ! ReadFromRFBServer ( client , ( char * ) & rect , sz_rfbFramebufferUpdateRectHeader ) ) return FALSE ; rect . encoding = rfbClientSwap32IfLE ( rect . encoding ) ; if ( rect . encoding == rfbEncodingLastRect ) break ; rect . r . x = rfbClientSwap16IfLE ( rect . r . x ) ; rect . r . y = rfbClientSwap16IfLE ( rect . r . y ) ; rect . r . w = rfbClientSwap16IfLE ( rect . r . w ) ; rect . r . h = rfbClientSwap16IfLE ( rect . r . h ) ; if ( rect . encoding == rfbEncodingXCursor || rect . encoding == rfbEncodingRichCursor ) { if ( ! HandleCursorShape ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h , rect . encoding ) ) { return FALSE ; } continue ; } if ( rect . encoding == rfbEncodingPointerPos ) { if ( ! client -> HandleCursorPos ( client , rect . r . x , rect . r . y ) ) { return FALSE ; } continue ; } if ( rect . encoding == rfbEncodingKeyboardLedState ) { client -> KeyboardLedStateEnabled = 1 ; if ( client -> HandleKeyboardLedState != NULL ) client -> HandleKeyboardLedState ( client , rect . r . x , 0 ) ; client -> CurrentKeyboardLedState = rect . r . x ; continue ; } if ( rect . encoding == rfbEncodingNewFBSize ) { client -> width = rect . r . w ; client -> height = rect . r . h ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , rect . r . w , rect . r . h , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , rect . r . w , rect . r . h ) ; continue ; } if ( rect . encoding == rfbEncodingSupportedMessages ) { int loop ; if ( ! ReadFromRFBServer ( client , ( char * ) & client -> supportedMessages , sz_rfbSupportedMessages ) ) return FALSE ; rfbClientLog ( \"client2server<S2SV_blank>supported<S2SV_blank>messages<S2SV_blank>(bit<S2SV_blank>flags)\\\\n\" ) ; for ( loop = 0 ; loop < 32 ; loop += 8 ) rfbClientLog ( \"%02X:<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>-<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x\\\\n\" , loop , client -> supportedMessages . client2server [ loop ] , client -> supportedMessages . client2server [ loop + 1 ] , client -> supportedMessages . client2server [ loop + 2 ] , client -> supportedMessages . client2server [ loop + 3 ] , client -> supportedMessages . client2server [ loop + 4 ] , client -> supportedMessages . client2server [ loop + 5 ] , client -> supportedMessages . client2server [ loop + 6 ] , client -> supportedMessages . client2server [ loop + 7 ] ) ; rfbClientLog ( \"server2client<S2SV_blank>supported<S2SV_blank>messages<S2SV_blank>(bit<S2SV_blank>flags)\\\\n\" ) ; for ( loop = 0 ; loop < 32 ; loop += 8 ) rfbClientLog ( \"%02X:<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>-<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x<S2SV_blank>%04x\\\\n\" , loop , client -> supportedMessages . server2client [ loop ] , client -> supportedMessages . server2client [ loop + 1 ] , client -> supportedMessages . server2client [ loop + 2 ] , client -> supportedMessages . server2client [ loop + 3 ] , client -> supportedMessages . server2client [ loop + 4 ] , client -> supportedMessages . server2client [ loop + 5 ] , client -> supportedMessages . server2client [ loop + 6 ] , client -> supportedMessages . server2client [ loop + 7 ] ) ; continue ; } if ( rect . encoding == rfbEncodingSupportedEncodings ) { char * buffer ; buffer = malloc ( rect . r . w ) ; if ( ! ReadFromRFBServer ( client , buffer , rect . r . w ) ) { free ( buffer ) ; return FALSE ; } free ( buffer ) ; continue ; } if ( rect . encoding == rfbEncodingServerIdentity ) { char * buffer ; buffer = malloc ( rect . r . w + 1 ) ; if ( ! ReadFromRFBServer ( client , buffer , rect . r . w ) ) { free ( buffer ) ; return FALSE ; } buffer [ rect . r . w ] = 0 ; rfbClientLog ( \"Connected<S2SV_blank>to<S2SV_blank>Server<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , buffer ) ; free ( buffer ) ; continue ; } if ( rect . encoding != rfbEncodingUltraZip ) { if ( ( rect . r . x + rect . r . w > client -> width ) || ( rect . r . y + rect . r . h > client -> height ) ) { rfbClientLog ( \"Rect<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%dx%d<S2SV_blank>at<S2SV_blank>(%d,<S2SV_blank>%d)\\\\n\" , rect . r . w , rect . r . h , rect . r . x , rect . r . y ) ; return FALSE ; } client -> SoftCursorLockArea ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ; } switch ( rect . encoding ) { case rfbEncodingRaw : { int y = rect . r . y , h = rect . r . h ; bytesPerLine = rect . r . w * client -> format . bitsPerPixel / 8 ; linesToRead = bytesPerLine ? ( RFB_BUFFER_SIZE / bytesPerLine ) : 0 ; while ( linesToRead && h > 0 ) { if ( linesToRead > h ) linesToRead = h ; if ( ! ReadFromRFBServer ( client , client -> buffer , bytesPerLine * linesToRead ) ) return FALSE ; client -> GotBitmap ( client , ( uint8_t * ) client -> buffer , rect . r . x , y , rect . r . w , linesToRead ) ; h -= linesToRead ; y += linesToRead ; } break ; } case rfbEncodingCopyRect : { rfbCopyRect cr ; if ( ! ReadFromRFBServer ( client , ( char * ) & cr , sz_rfbCopyRect ) ) return FALSE ; cr . srcX = rfbClientSwap16IfLE ( cr . srcX ) ; cr . srcY = rfbClientSwap16IfLE ( cr . srcY ) ; client -> SoftCursorLockArea ( client , cr . srcX , cr . srcY , rect . r . w , rect . r . h ) ; client -> GotCopyRect ( client , cr . srcX , cr . srcY , rect . r . w , rect . r . h , rect . r . x , rect . r . y ) ; break ; } case rfbEncodingRRE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleRRE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleRRE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleRRE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingCoRRE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleCoRRE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleCoRRE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleCoRRE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingHextile : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleHextile8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleHextile16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleHextile32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingUltra : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleUltra8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleUltra16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleUltra32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingUltraZip : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleUltraZip8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleUltraZip16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleUltraZip32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } case rfbEncodingTRLE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleTRLE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( client -> si . format . greenMax > 0x1F ) { if ( ! HandleTRLE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else { if ( ! HandleTRLE15 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } break ; case 32 : { uint32_t maxColor = ( client -> format . redMax << client -> format . redShift ) | ( client -> format . greenMax << client -> format . greenShift ) | ( client -> format . blueMax << client -> format . blueShift ) ; if ( ( client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) || ( ! client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) ) { if ( ! HandleTRLE24 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) { if ( ! HandleTRLE24Up ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) { if ( ! HandleTRLE24Down ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! HandleTRLE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } } break ; } # ifdef LIBVNCSERVER_HAVE_LIBZ case rfbEncodingZlib : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleZlib8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleZlib16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleZlib32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } # ifdef LIBVNCSERVER_HAVE_LIBJPEG case rfbEncodingTight : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleTight8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( ! HandleTight16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 32 : if ( ! HandleTight32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } break ; } # endif case rfbEncodingZRLE : client -> appData . qualityLevel = 9 ; case rfbEncodingZYWRLE : { switch ( client -> format . bitsPerPixel ) { case 8 : if ( ! HandleZRLE8 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; case 16 : if ( client -> si . format . greenMax > 0x1F ) { if ( ! HandleZRLE16 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else { if ( ! HandleZRLE15 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } break ; case 32 : { uint32_t maxColor = ( client -> format . redMax << client -> format . redShift ) | ( client -> format . greenMax << client -> format . greenShift ) | ( client -> format . blueMax << client -> format . blueShift ) ; if ( ( client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) || ( ! client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) ) { if ( ! HandleZRLE24 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! client -> format . bigEndian && ( maxColor & 0xff ) == 0 ) { if ( ! HandleZRLE24Up ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( client -> format . bigEndian && ( maxColor & 0xff000000 ) == 0 ) { if ( ! HandleZRLE24Down ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; } else if ( ! HandleZRLE32 ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ) return FALSE ; break ; } } break ; } # endif default : { rfbBool handled = FALSE ; rfbClientProtocolExtension * e ; for ( e = rfbClientExtensions ; ! handled && e ; e = e -> next ) if ( e -> handleEncoding && e -> handleEncoding ( client , & rect ) ) handled = TRUE ; if ( ! handled ) { rfbClientLog ( \"Unknown<S2SV_blank>rect<S2SV_blank>encoding<S2SV_blank>%d\\\\n\" , ( int ) rect . encoding ) ; return FALSE ; } } } client -> SoftCursorUnlockScreen ( client ) ; client -> GotFrameBufferUpdate ( client , rect . r . x , rect . r . y , rect . r . w , rect . r . h ) ; } if ( ! SendIncrementalFramebufferUpdateRequest ( client ) ) return FALSE ; if ( client -> FinishedFrameBufferUpdate ) client -> FinishedFrameBufferUpdate ( client ) ; break ; } case rfbBell : { client -> Bell ( client ) ; break ; } case rfbServerCutText : { char * buffer ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbServerCutTextMsg - 1 ) ) return FALSE ; msg . sct . length = rfbClientSwap32IfLE ( msg . sct . length ) ; if ( msg . sct . length > 1 << 20 ) { rfbClientErr ( \"Ignoring<S2SV_blank>too<S2SV_blank>big<S2SV_blank>cut<S2SV_blank>text<S2SV_blank>length<S2SV_blank>sent<S2SV_blank>by<S2SV_blank>server:<S2SV_blank>%u<S2SV_blank>B<S2SV_blank>><S2SV_blank>1<S2SV_blank>MB\\\\n\" , ( unsigned int ) msg . sct . length ) ; return FALSE ; } buffer = malloc ( msg . sct . length + 1 ) ; if ( ! ReadFromRFBServer ( client , buffer , msg . sct . length ) ) { free ( buffer ) ; return FALSE ; } buffer [ msg . sct . length ] = 0 ; if ( client -> GotXCutText ) client -> GotXCutText ( client , buffer , msg . sct . length ) ; free ( buffer ) ; break ; } case rfbTextChat : { char * buffer = NULL ; if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbTextChatMsg - 1 ) ) return FALSE ; msg . tc . length = rfbClientSwap32IfLE ( msg . sct . length ) ; switch ( msg . tc . length ) { case rfbTextChatOpen : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Open\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatOpen , NULL ) ; break ; case rfbTextChatClose : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Close\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatClose , NULL ) ; break ; case rfbTextChatFinished : rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>Finished\\\\n\" ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) rfbTextChatFinished , NULL ) ; break ; default : <S2SV_StartBug> buffer = malloc ( msg . tc . length + 1 ) ; <S2SV_EndBug> if ( ! ReadFromRFBServer ( client , buffer , msg . tc . length ) ) { free ( buffer ) ; return FALSE ; } buffer [ msg . tc . length ] = 0 ; rfbClientLog ( \"Received<S2SV_blank>TextChat<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , buffer ) ; if ( client -> HandleTextChat != NULL ) client -> HandleTextChat ( client , ( int ) msg . tc . length , buffer ) ; free ( buffer ) ; break ; } break ; } case rfbXvp : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbXvpMsg - 1 ) ) return FALSE ; SetClient2Server ( client , rfbXvp ) ; SetServer2Client ( client , rfbXvp ) ; if ( client -> HandleXvpMsg ) client -> HandleXvpMsg ( client , msg . xvp . version , msg . xvp . code ) ; break ; } case rfbResizeFrameBuffer : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbResizeFrameBufferMsg - 1 ) ) return FALSE ; client -> width = rfbClientSwap16IfLE ( msg . rsfb . framebufferWidth ) ; client -> height = rfbClientSwap16IfLE ( msg . rsfb . framebufferHeigth ) ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , client -> width , client -> height , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , client -> width , client -> height ) ; break ; } case rfbPalmVNCReSizeFrameBuffer : { if ( ! ReadFromRFBServer ( client , ( ( char * ) & msg ) + 1 , sz_rfbPalmVNCReSizeFrameBufferMsg - 1 ) ) return FALSE ; client -> width = rfbClientSwap16IfLE ( msg . prsfb . buffer_w ) ; client -> height = rfbClientSwap16IfLE ( msg . prsfb . buffer_h ) ; client -> updateRect . x = client -> updateRect . y = 0 ; client -> updateRect . w = client -> width ; client -> updateRect . h = client -> height ; if ( ! client -> MallocFrameBuffer ( client ) ) return FALSE ; SendFramebufferUpdateRequest ( client , 0 , 0 , client -> width , client -> height , FALSE ) ; rfbClientLog ( \"Got<S2SV_blank>new<S2SV_blank>framebuffer<S2SV_blank>size:<S2SV_blank>%dx%d\\\\n\" , client -> width , client -> height ) ; break ; } default : { rfbBool handled = FALSE ; rfbClientProtocolExtension * e ; for ( e = rfbClientExtensions ; ! handled && e ; e = e -> next ) if ( e -> handleMessage && e -> handleMessage ( client , & msg ) ) handled = TRUE ; if ( ! handled ) { char buffer [ 256 ] ; rfbClientLog ( \"Unknown<S2SV_blank>message<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>VNC<S2SV_blank>server\\\\n\" , msg . type ) ; ReadFromRFBServer ( client , buffer , 256 ) ; return FALSE ; } } } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; default : if ( msg . tc . length > MAX_TEXTCHAT_SIZE ) return FALSE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-26247\n\n```\nCWE-611 void init_xml_relax_ng ( ) { VALUE nokogiri = rb_define_module ( \"Nokogiri\" ) ; VALUE xml = rb_define_module_under ( nokogiri , \"XML\" ) ; VALUE klass = rb_define_class_under ( xml , \"RelaxNG\" , cNokogiriXmlSchema ) ; cNokogiriXmlRelaxNG = klass ; <S2SV_StartBug> rb_define_singleton_method ( klass , \"read_memory\" , read_memory , 1 ) ; <S2SV_EndBug> <S2SV_StartBug> rb_define_singleton_method ( klass , \"from_document\" , from_document , 1 ) ; <S2SV_EndBug> rb_define_private_method ( klass , \"validate_document\" , validate_document , 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , read_memory , - <S2SV_ModStart> , from_document , -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9391\n\n```\nCWE-000 int jpc_bitstream_putbits ( jpc_bitstream_t * bitstream , int n , long v ) { int m ; <S2SV_StartBug> assert ( n >= 0 && n < 32 ) ; <S2SV_EndBug> assert ( ! ( v & ( ~ JAS_ONES ( n ) ) ) ) ; m = n - 1 ; while ( -- n >= 0 ) { if ( jpc_bitstream_putbit ( bitstream , ( v >> m ) & 1 ) == EOF ) { return EOF ; } v <<= 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int m ; if ( n < 0 || n >= 32 ) { return EOF ; } <S2SV_ModEnd> assert ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static void nsc_encode_subsampling ( NSC_CONTEXT * context ) <S2SV_EndBug> { UINT16 x ; UINT16 y ; <S2SV_StartBug> BYTE * co_dst ; <S2SV_EndBug> BYTE * cg_dst ; INT8 * co_src0 ; INT8 * co_src1 ; INT8 * cg_src0 ; INT8 * cg_src1 ; UINT32 tempWidth ; <S2SV_StartBug> UINT32 tempHeight ; <S2SV_EndBug> tempWidth = ROUND_UP_TO ( context -> width , 8 ) ; tempHeight = ROUND_UP_TO ( context -> height , 2 ) ; <S2SV_StartBug> for ( y = 0 ; y < tempHeight >> 1 ; y ++ ) <S2SV_EndBug> { <S2SV_StartBug> co_dst = context -> priv -> PlaneBuffers [ 1 ] + y * ( tempWidth >> 1 ) ; <S2SV_EndBug> <S2SV_StartBug> cg_dst = context -> priv -> PlaneBuffers [ 2 ] + y * ( tempWidth >> 1 ) ; <S2SV_EndBug> <S2SV_StartBug> co_src0 = ( INT8 * ) context -> priv -> PlaneBuffers [ 1 ] + ( y << 1 ) * tempWidth ; <S2SV_EndBug> <S2SV_StartBug> co_src1 = co_src0 + tempWidth ; <S2SV_EndBug> <S2SV_StartBug> cg_src0 = ( INT8 * ) context -> priv -> PlaneBuffers [ 2 ] + ( y << 1 ) * tempWidth ; <S2SV_EndBug> <S2SV_StartBug> cg_src1 = cg_src0 + tempWidth ; <S2SV_EndBug> for ( x = 0 ; x < tempWidth >> 1 ; x ++ ) { * co_dst ++ = ( BYTE ) ( ( ( INT16 ) * co_src0 + ( INT16 ) * ( co_src0 + 1 ) + ( INT16 ) * co_src1 + ( INT16 ) * ( co_src1 + 1 ) ) >> 2 ) ; * cg_dst ++ = ( BYTE ) ( ( ( INT16 ) * cg_src0 + ( INT16 ) * ( cg_src0 + 1 ) + ( INT16 ) * cg_src1 + ( INT16 ) * ( cg_src1 + 1 ) ) >> 2 ) ; co_src0 += 2 ; co_src1 += 2 ; cg_src0 += 2 ; cg_src1 += 2 ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> nsc_encode_subsampling ( NSC_CONTEXT <S2SV_ModStart> UINT16 y ; <S2SV_ModEnd> UINT32 tempWidth ; <S2SV_ModStart> ; UINT32 tempHeight ; if ( ! context ) return FALSE <S2SV_ModStart> 2 ) ; if ( tempHeight == 0 ) return FALSE ; if ( tempWidth > context -> priv -> PlaneBuffersLength / tempHeight ) return FALSE ; <S2SV_ModStart> ++ ) { BYTE * <S2SV_ModStart> 1 ) ; BYTE * <S2SV_ModStart> 1 ) ; const INT8 * <S2SV_ModStart> * tempWidth ; const INT8 * <S2SV_ModStart> + tempWidth ; const INT8 * <S2SV_ModStart> * tempWidth ; const INT8 * <S2SV_ModStart> ; } } return TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int rc_pick_q_and_bounds_two_pass ( const VP9_COMP * cpi , int * bottom_index , int * top_index ) { const VP9_COMMON * const cm = & cpi -> common ; const RATE_CONTROL * const rc = & cpi -> rc ; <S2SV_StartBug> const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> <S2SV_StartBug> int active_best_quality ; <S2SV_EndBug> int active_worst_quality = cpi -> twopass . active_worst_quality ; int q ; <S2SV_StartBug> if ( frame_is_intra_only ( cm ) ) { <S2SV_EndBug> # if ! CONFIG_MULTIPLE_ARF <S2SV_StartBug> if ( rc -> this_key_frame_forced ) { <S2SV_EndBug> <S2SV_StartBug> int qindex = rc -> last_boosted_qindex ; <S2SV_EndBug> <S2SV_StartBug> double last_boosted_q = vp9_convert_qindex_to_q ( qindex ) ; <S2SV_EndBug> int delta_qindex = vp9_compute_qdelta ( rc , last_boosted_q , <S2SV_StartBug> last_boosted_q * 0.75 ) ; <S2SV_EndBug> <S2SV_StartBug> active_best_quality = MAX ( qindex + delta_qindex , rc -> best_quality ) ; <S2SV_EndBug> } else { double q_adj_factor = 1.0 ; double q_val ; <S2SV_StartBug> active_best_quality = get_active_quality ( active_worst_quality , <S2SV_EndBug> rc -> kf_boost , kf_low , kf_high , kf_low_motion_minq , kf_high_motion_minq ) ; if ( ( cm -> width * cm -> height ) <= ( 352 * 288 ) ) { q_adj_factor -= 0.25 ; } q_adj_factor += 0.05 - ( 0.001 * ( double ) cpi -> twopass . kf_zeromotion_pct ) ; <S2SV_StartBug> q_val = vp9_convert_qindex_to_q ( active_best_quality ) ; <S2SV_EndBug> active_best_quality += vp9_compute_qdelta ( rc , q_val , <S2SV_StartBug> q_val * q_adj_factor ) ; <S2SV_EndBug> } # else double current_q ; current_q = vp9_convert_qindex_to_q ( active_worst_quality ) ; active_best_quality = active_worst_quality + vp9_compute_qdelta ( rc , current_q , current_q * 0.3 ) ; # endif } else if ( ! rc -> is_src_frame_alt_ref && ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) ) { if ( rc -> frames_since_key > 1 && rc -> avg_frame_qindex [ INTER_FRAME ] < active_worst_quality ) { q = rc -> avg_frame_qindex [ INTER_FRAME ] ; } else { q = active_worst_quality ; } <S2SV_StartBug> if ( oxcf -> end_usage == USAGE_CONSTRAINED_QUALITY ) { <S2SV_EndBug> <S2SV_StartBug> if ( q < cpi -> cq_target_quality ) <S2SV_EndBug> q = cpi -> cq_target_quality ; if ( rc -> frames_since_key > 1 ) { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , afq_low_motion_minq , afq_high_motion_minq ) ; } else { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , gf_low_motion_minq , gf_high_motion_minq ) ; } active_best_quality = active_best_quality * 15 / 16 ; <S2SV_StartBug> } else if ( oxcf -> end_usage == USAGE_CONSTANT_QUALITY ) { <S2SV_EndBug> if ( ! cpi -> refresh_alt_ref_frame ) { <S2SV_StartBug> active_best_quality = cpi -> cq_target_quality ; <S2SV_EndBug> } else { if ( rc -> frames_since_key > 1 ) { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , afq_low_motion_minq , afq_high_motion_minq ) ; } else { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , gf_low_motion_minq , gf_high_motion_minq ) ; } } } else { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , gf_low_motion_minq , gf_high_motion_minq ) ; } } else { <S2SV_StartBug> if ( oxcf -> end_usage == USAGE_CONSTANT_QUALITY ) { <S2SV_EndBug> active_best_quality = cpi -> cq_target_quality ; } else { active_best_quality = inter_minq [ active_worst_quality ] ; <S2SV_StartBug> if ( ( oxcf -> end_usage == USAGE_CONSTRAINED_QUALITY ) && <S2SV_EndBug> <S2SV_StartBug> ( active_best_quality < cpi -> cq_target_quality ) ) { <S2SV_EndBug> if ( rc -> rolling_actual_bits < rc -> min_frame_bandwidth ) active_best_quality = oxcf -> cq_level ; else active_best_quality = cpi -> cq_target_quality ; } } } active_best_quality = clamp ( active_best_quality , rc -> best_quality , rc -> worst_quality ) ; active_worst_quality = clamp ( active_worst_quality , active_best_quality , rc -> worst_quality ) ; * top_index = active_worst_quality ; * bottom_index = active_best_quality ; # if LIMIT_QRANGE_FOR_ALTREF_AND_KEY <S2SV_StartBug> if ( cm -> frame_type == KEY_FRAME && ! rc -> this_key_frame_forced ) { <S2SV_EndBug> <S2SV_StartBug> * top_index = ( active_worst_quality + active_best_quality * 3 ) / 4 ; <S2SV_EndBug> } else if ( ! rc -> is_src_frame_alt_ref && ( oxcf -> end_usage != USAGE_STREAM_FROM_SERVER ) && ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) ) { * top_index = ( active_worst_quality + active_best_quality ) / 2 ; } # endif if ( oxcf -> end_usage == USAGE_CONSTANT_QUALITY ) { q = active_best_quality ; } else if ( ( cm -> frame_type == KEY_FRAME ) && rc -> this_key_frame_forced ) { <S2SV_StartBug> q = rc -> last_boosted_qindex ; <S2SV_EndBug> } else { q = vp9_rc_regulate_q ( cpi , rc -> this_frame_target , active_best_quality , active_worst_quality ) ; <S2SV_StartBug> if ( q > * top_index ) { <S2SV_EndBug> if ( rc -> this_frame_target >= rc -> max_frame_bandwidth ) <S2SV_StartBug> * top_index = q ; <S2SV_EndBug> else q = * top_index ; } } # if CONFIG_MULTIPLE_ARF if ( cpi -> multi_arf_enabled && ( cm -> frame_type != KEY_FRAME ) && cpi -> oxcf . end_usage != USAGE_CONSTANT_QUALITY ) { double new_q ; double current_q = vp9_convert_qindex_to_q ( active_worst_quality ) ; int level = cpi -> this_frame_weight ; assert ( level >= 0 ) ; new_q = current_q * ( 1.0 - ( 0.2 * ( cpi -> max_arf_level - level ) ) ) ; q = active_worst_quality + vp9_compute_qdelta ( rc , current_q , new_q ) ; <S2SV_StartBug> * bottom_index = q ; <S2SV_EndBug> * top_index = q ; printf ( \"frame:%d<S2SV_blank>q:%d\\\\n\" , cm -> current_video_frame , q ) ; } # endif assert ( * top_index <= rc -> worst_quality && * top_index >= rc -> best_quality ) ; assert ( * bottom_index <= rc -> worst_quality && * bottom_index >= rc -> best_quality ) ; assert ( q <= rc -> worst_quality && q >= rc -> best_quality ) ; return q ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc ; const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> -> oxcf ; const GF_GROUP * gf_group = & cpi -> twopass . gf_group ; const int cq_level = get_active_cq_level ( rc , oxcf ) ; int active_best_quality ; int active_worst_quality = cpi -> twopass . active_worst_quality ; int q ; int * inter_minq ; ASSIGN_MINQ_TABLE ( cm -> bit_depth , inter_minq ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( cm ) || vp9_is_upper_layer_key_frame ( cpi ) ) { <S2SV_ModEnd> if ( rc <S2SV_ModStart> this_key_frame_forced ) { double last_boosted_q ; int delta_qindex ; int qindex ; if ( cpi -> twopass . last_kfgroup_zeromotion_pct >= STATIC_MOTION_THRESH ) { qindex = MIN ( rc -> last_kf_qindex , <S2SV_ModEnd> rc -> last_boosted_qindex <S2SV_ModStart> rc -> last_boosted_qindex ) ; active_best_quality = qindex ; <S2SV_ModEnd> last_boosted_q = vp9_convert_qindex_to_q <S2SV_ModStart> vp9_convert_qindex_to_q ( qindex , cm -> bit_depth ) ; <S2SV_ModEnd> delta_qindex = vp9_compute_qdelta <S2SV_ModStart> , last_boosted_q * 1.25 , cm -> bit_depth ) ; active_worst_quality = MIN <S2SV_ModEnd> ( qindex + <S2SV_ModStart> + delta_qindex , active_worst_quality ) ; } else { qindex = rc -> last_boosted_qindex ; last_boosted_q = vp9_convert_qindex_to_q ( qindex , cm -> bit_depth ) ; delta_qindex = vp9_compute_qdelta ( rc , last_boosted_q , last_boosted_q * 0.75 , cm -> bit_depth ) ; active_best_quality = MAX ( qindex + delta_qindex , <S2SV_ModStart> best_quality ) ; } <S2SV_ModStart> ; active_best_quality = get_kf_active_quality ( rc , active_worst_quality , cm -> bit_depth <S2SV_ModEnd> ) ; if <S2SV_ModStart> vp9_convert_qindex_to_q ( active_best_quality , cm -> bit_depth <S2SV_ModStart> q_val * q_adj_factor , cm -> bit_depth ) ; } <S2SV_ModEnd> } else if <S2SV_ModStart> ( oxcf -> rc_mode == VPX_CQ <S2SV_ModEnd> ) { if <S2SV_ModStart> ( q < cq_level ) q = cq_level ; active_best_quality = get_gf_active_quality ( rc , q , cm -> bit_depth ) ; <S2SV_ModEnd> active_best_quality = active_best_quality <S2SV_ModStart> ( oxcf -> rc_mode == VPX_Q <S2SV_ModEnd> ) { if <S2SV_ModStart> { active_best_quality = cq_level ; } else { active_best_quality = get_gf_active_quality ( rc , q , cm -> bit_depth ) ; if ( gf_group -> rf_level [ gf_group -> index ] == GF_ARF_LOW ) active_best_quality = ( active_best_quality + cq_level + 1 ) / 2 ; } } else { active_best_quality = get_gf_active_quality ( rc , q , cm -> bit_depth <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( oxcf -> rc_mode == VPX_Q ) { active_best_quality = cq_level <S2SV_ModEnd> ; } else <S2SV_ModStart> ( oxcf -> rc_mode == VPX_CQ <S2SV_ModEnd> ) && ( <S2SV_ModStart> ( active_best_quality < cq_level ) ) { active_best_quality = cq_level ; } } } if ( ( cpi -> oxcf . rc_mode != VPX_Q ) && ( cpi -> twopass . gf_zeromotion_pct < VLOW_MOTION_THRESHOLD ) ) { if ( frame_is_intra_only ( cm ) || ( ! rc -> is_src_frame_alt_ref && ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) ) ) { active_best_quality -= ( cpi -> twopass . extend_minq + cpi -> twopass . extend_minq_fast ) ; active_worst_quality += ( cpi -> twopass . extend_maxq / 2 ) ; } else { active_best_quality -= ( cpi -> twopass . extend_minq + cpi -> twopass . extend_minq_fast ) / 2 ; active_worst_quality += cpi -> twopass . extend_maxq ; } } <S2SV_ModEnd> # if LIMIT_QRANGE_FOR_ALTREF_AND_KEY <S2SV_ModStart> # if LIMIT_QRANGE_FOR_ALTREF_AND_KEY vpx_clear_system_state ( ) ; if ( ! ( ( frame_is_intra_only ( cm ) || vp9_is_upper_layer_key_frame ( cpi ) ) ) || ! rc -> this_key_frame_forced || ( cpi -> twopass . last_kfgroup_zeromotion_pct < STATIC_MOTION_THRESH ) ) { int qdelta = vp9_frame_type_qdelta ( cpi , gf_group -> rf_level [ gf_group -> index ] , active_worst_quality ) ; active_worst_quality = MAX ( active_worst_quality + qdelta , active_best_quality ) ; } # endif if ( rc -> frame_size_selector != UNSCALED && ! frame_is_kf_gf_arf ( cpi ) ) { int qdelta = vp9_compute_qdelta_by_rate ( rc , cm -> frame_type , active_best_quality , 2.0 , cm -> bit_depth ) ; active_best_quality = MAX ( active_best_quality + qdelta , rc -> best_quality ) ; } active_best_quality = clamp ( active_best_quality , rc -> best_quality , rc -> worst_quality ) ; active_worst_quality = clamp ( active_worst_quality , active_best_quality , rc -> worst_quality ) ; if ( oxcf -> rc_mode == VPX_Q ) { q = active_best_quality ; } else if ( ( frame_is_intra_only ( cm ) || vp9_is_upper_layer_key_frame ( cpi ) ) && <S2SV_ModEnd> rc -> this_key_frame_forced <S2SV_ModStart> this_key_frame_forced ) { if ( cpi -> twopass . last_kfgroup_zeromotion_pct >= STATIC_MOTION_THRESH ) { q = MIN ( rc -> last_kf_qindex , <S2SV_ModEnd> rc -> last_boosted_qindex <S2SV_ModStart> rc -> last_boosted_qindex ) ; } else { q = rc -> last_boosted_qindex ; } <S2SV_ModEnd> } else { <S2SV_ModStart> ( q > active_worst_quality <S2SV_ModEnd> ) { if <S2SV_ModStart> -> max_frame_bandwidth ) active_worst_quality = q ; else q = active_worst_quality ; } } clamp ( q , active_best_quality , active_worst_quality ) ; <S2SV_ModStart> * top_index = active_worst_quality <S2SV_ModEnd> ; * bottom_index <S2SV_ModStart> * bottom_index = active_best_quality ; <S2SV_ModEnd> assert ( *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void rate_block ( int plane , int block , BLOCK_SIZE plane_bsize , <S2SV_EndBug> TX_SIZE tx_size , struct rdcost_block_args * args ) { int x_idx , y_idx ; txfrm_block_to_raster_xy ( plane_bsize , tx_size , block , & x_idx , & y_idx ) ; <S2SV_StartBug> args -> rate = cost_coeffs ( args -> x , plane , block , args -> t_above + x_idx , <S2SV_EndBug> args -> t_left + y_idx , tx_size , args -> so -> scan , args -> so -> neighbors , args -> use_fast_coef_costing ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> rate_block ( int <S2SV_ModStart> y_idx ) ; return <S2SV_ModEnd> cost_coeffs ( args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-358(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10229\n\n```\nCWE-358 int udp_recvmsg ( struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_in * , sin , msg -> msg_name ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; <S2SV_StartBug> int is_udplite = IS_UDPLITE ( sk ) ; <S2SV_EndBug> bool slow ; if ( flags & MSG_ERRQUEUE ) return ip_recv_error ( sk , msg , len , addr_len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { <S2SV_StartBug> if ( udp_lib_checksum_complete ( skb ) ) <S2SV_EndBug> goto csum_copy_err ; } <S2SV_StartBug> if ( skb_csum_unnecessary ( skb ) ) <S2SV_EndBug> err = skb_copy_datagram_msg ( skb , sizeof ( struct udphdr ) , msg , copied ) ; else { err = skb_copy_and_csum_datagram_msg ( skb , sizeof ( struct udphdr ) , msg ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udp_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_port = udp_hdr ( skb ) -> source ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; * addr_len = sizeof ( * sin ) ; } if ( inet -> cmsg_flags ) ip_cmsg_recv_offset ( msg , skb , sizeof ( struct udphdr ) ) ; err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } unlock_sock_fast ( sk , slow ) ; cond_resched ( ) ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; bool checksum_valid = false <S2SV_ModStart> partial_cov ) { checksum_valid = ! <S2SV_ModEnd> udp_lib_checksum_complete ( skb <S2SV_ModStart> ( skb ) ; if ( ! checksum_valid <S2SV_ModStart> } if ( checksum_valid ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 <S2SV_StartBug> static void udf_pc_to_char ( struct super_block * sb , unsigned char * from , <S2SV_EndBug> <S2SV_StartBug> int fromlen , unsigned char * to ) <S2SV_EndBug> { struct pathComponent * pc ; int elen = 0 ; <S2SV_StartBug> unsigned char * p = to ; <S2SV_EndBug> while ( elen < fromlen ) { pc = ( struct pathComponent * ) ( from + elen ) ; switch ( pc -> componentType ) { case 1 : if ( pc -> lengthComponentIdent > 0 ) break ; case 2 : <S2SV_StartBug> p = to ; <S2SV_EndBug> * p ++ = '/' ; <S2SV_StartBug> break ; <S2SV_EndBug> case 3 : memcpy ( p , \"../\" , 3 ) ; p += 3 ; <S2SV_StartBug> break ; <S2SV_EndBug> case 4 : <S2SV_StartBug> memcpy ( p , \"./\" , 2 ) ; <S2SV_EndBug> p += 2 ; <S2SV_StartBug> break ; <S2SV_EndBug> case 5 : <S2SV_StartBug> p += udf_get_filename ( sb , pc -> componentIdent , p , <S2SV_EndBug> pc -> lengthComponentIdent ) ; <S2SV_StartBug> * p ++ = '/' ; <S2SV_EndBug> break ; } elen += sizeof ( struct pathComponent ) + pc -> lengthComponentIdent ; } if ( p > to + 1 ) p [ - 1 ] = '\\\\0' ; else p [ 0 ] = '\\\\0' ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> udf_pc_to_char ( struct <S2SV_ModStart> char * to , int tolen <S2SV_ModStart> = 0 ; int comp_len ; <S2SV_ModStart> p = to ; tolen -- <S2SV_ModStart> case 2 : if ( tolen == 0 ) return - ENAMETOOLONG ; <S2SV_ModStart> = '/' ; tolen -- ; break ; case 3 : if ( tolen < 3 ) return - ENAMETOOLONG ; <S2SV_ModEnd> memcpy ( p <S2SV_ModStart> += 3 ; tolen -= 3 ; <S2SV_ModStart> case 4 : if ( tolen < 2 ) return - ENAMETOOLONG ; <S2SV_ModStart> += 2 ; tolen -= 2 ; <S2SV_ModStart> case 5 : comp_len = udf_get_filename ( sb , pc -> componentIdent , pc -> lengthComponentIdent , p , tolen ) ; p += comp_len ; tolen -= comp_len ; if ( tolen == 0 ) return - ENAMETOOLONG <S2SV_ModEnd> ; * p <S2SV_ModStart> ++ = '/' ; tolen -- <S2SV_ModStart> = '\\\\0' ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7456\n\n```\nCWE-125 static inline LineContribType * _gdContributionsCalc ( unsigned int line_size , unsigned int src_size , double scale_d , const interpolation_method pFilter ) { double width_d ; double scale_f_d = 1.0 ; const double filter_width_d = DEFAULT_BOX_RADIUS ; int windows_size ; unsigned int u ; LineContribType * res ; if ( scale_d < 1.0 ) { width_d = filter_width_d / scale_d ; scale_f_d = scale_d ; } else { width_d = filter_width_d ; } windows_size = 2 * ( int ) ceil ( width_d ) + 1 ; res = _gdContributionsAlloc ( line_size , windows_size ) ; for ( u = 0 ; u < line_size ; u ++ ) { const double dCenter = ( double ) u / scale_d ; register int iLeft = MAX ( 0 , ( int ) floor ( dCenter - width_d ) ) ; int iRight = MIN ( ( int ) ceil ( dCenter + width_d ) , ( int ) src_size - 1 ) ; double dTotalWeight = 0.0 ; <S2SV_StartBug> int iSrc ; <S2SV_EndBug> res -> ContribRow [ u ] . Left = iLeft ; res -> ContribRow [ u ] . Right = iRight ; if ( iRight - iLeft + 1 > windows_size ) { if ( iLeft < ( ( int ) src_size - 1 / 2 ) ) { iLeft ++ ; } else { iRight -- ; } } <S2SV_StartBug> for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { <S2SV_EndBug> <S2SV_StartBug> dTotalWeight += ( res -> ContribRow [ u ] . Weights [ iSrc - iLeft ] = scale_f_d * ( * pFilter ) ( scale_f_d * ( dCenter - ( double ) iSrc ) ) ) ; <S2SV_EndBug> } if ( dTotalWeight < 0.0 ) { _gdContributionsFree ( res ) ; return NULL ; } if ( dTotalWeight > 0.0 ) { for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { res -> ContribRow [ u ] . Weights [ iSrc - iLeft ] /= dTotalWeight ; } } } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int iSrc <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; } } <S2SV_ModEnd> res -> ContribRow <S2SV_ModStart> u ] . Left = iLeft ; res -> ContribRow [ u ] . Right = iRight ; for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { dTotalWeight += ( res -> ContribRow [ u ] .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3232\n\n```\nCWE-200 static int nr_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct sockaddr_ax25 * sax = ( struct sockaddr_ax25 * ) msg -> msg_name ; size_t copied ; struct sk_buff * skb ; int er ; lock_sock ( sk ) ; if ( sk -> sk_state != TCP_ESTABLISHED ) { release_sock ( sk ) ; return - ENOTCONN ; } if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) { release_sock ( sk ) ; return er ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } er = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( er < 0 ) { skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return er ; } if ( sax != NULL ) { <S2SV_StartBug> memset ( sax , 0 , sizeof ( sax ) ) ; <S2SV_EndBug> sax -> sax25_family = AF_NETROM ; skb_copy_from_linear_data_offset ( skb , 7 , sax -> sax25_call . ax25_call , AX25_ADDR_LEN ) ; } msg -> msg_namelen = sizeof ( * sax ) ; skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , sizeof ( *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 static void do_service ( Socket_T s ) { volatile HttpResponse res = create_HttpResponse ( s ) ; volatile HttpRequest req = create_HttpRequest ( s ) ; if ( res && req ) { if ( Run . httpd . flags & Httpd_Ssl ) set_header ( res , \"Strict-Transport-Security\" , \"max-age=63072000;<S2SV_blank>includeSubdomains;<S2SV_blank>preload\" ) ; <S2SV_StartBug> if ( is_authenticated ( req , res ) ) { <S2SV_EndBug> if ( IS ( req -> method , METHOD_GET ) ) Impl . doGet ( req , res ) ; else if ( IS ( req -> method , METHOD_POST ) ) Impl . doPost ( req , res ) ; else send_error ( req , res , SC_NOT_IMPLEMENTED , \"Method<S2SV_blank>not<S2SV_blank>implemented\" ) ; } send_response ( req , res ) ; } done ( req , res ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { set_header ( res , \"Set-Cookie\" , \"securitytoken=%s;<S2SV_blank>Max-Age=600;<S2SV_blank>HttpOnly;<S2SV_blank>SameSite=strict%s\" , res -> token , Run . httpd . flags & Httpd_Ssl ? \";<S2SV_blank>Secure\" : \"\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static void load_xref_from_plaintext ( FILE * fp , xref_t * xref ) { int i , buf_idx , obj_id , added_entries ; char c , buf [ 32 ] = { 0 } ; long start , pos ; start = ftell ( fp ) ; pos = xref -> end ; fseek ( fp , pos , SEEK_SET ) ; while ( ftell ( fp ) != 0 ) if ( SAFE_F ( fp , ( fgetc ( fp ) == '/' && fgetc ( fp ) == 'S' ) ) ) break ; else SAFE_E ( fseek ( fp , -- pos , SEEK_SET ) , 0 , \"Failed<S2SV_blank>seek<S2SV_blank>to<S2SV_blank>xref<S2SV_blank>/Size.\\\\n\" ) ; SAFE_E ( fread ( buf , 1 , 21 , fp ) , 21 , \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>entry<S2SV_blank>Size<S2SV_blank>string.\\\\n\" ) ; xref -> n_entries = atoi ( buf + strlen ( \"ize<S2SV_blank>\" ) ) ; <S2SV_StartBug> xref -> entries = calloc ( 1 , xref -> n_entries * sizeof ( struct _xref_entry ) ) ; <S2SV_EndBug> obj_id = 0 ; fseek ( fp , xref -> start + strlen ( \"xref\" ) , SEEK_SET ) ; added_entries = 0 ; for ( i = 0 ; i < xref -> n_entries ; i ++ ) { c = fgetc ( fp ) ; while ( c == '\\\\n' || c == '\\\\r' ) c = fgetc ( fp ) ; buf_idx = 0 ; while ( c != '\\\\n' && c != '\\\\r' && ! feof ( fp ) && ! ferror ( fp ) && buf_idx < sizeof ( buf ) ) { buf [ buf_idx ++ ] = c ; c = fgetc ( fp ) ; } if ( buf_idx >= sizeof ( buf ) ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>locate<S2SV_blank>newline<S2SV_blank>character.<S2SV_blank>\" \"This<S2SV_blank>might<S2SV_blank>be<S2SV_blank>a<S2SV_blank>corrupt<S2SV_blank>PDF.\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } buf [ buf_idx ] = '\\\\0' ; if ( strchr ( buf , 't' ) ) break ; if ( strlen ( buf ) > 17 ) { xref -> entries [ i ] . obj_id = obj_id ++ ; xref -> entries [ i ] . offset = atol ( strtok ( buf , \"<S2SV_blank>\" ) ) ; xref -> entries [ i ] . gen_num = atoi ( strtok ( NULL , \"<S2SV_blank>\" ) ) ; xref -> entries [ i ] . f_or_n = buf [ 17 ] ; ++ added_entries ; } else { obj_id = atoi ( buf ) ; -- i ; } } xref -> n_entries = added_entries ; fseek ( fp , start , SEEK_SET ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> entries = safe_calloc ( <S2SV_ModEnd> xref -> n_entries\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10375\n\n```\nCWE-119 void queue_push ( register Queue * qp , size_t extra_length , char const * info ) { register char * cp ; size_t memory_length ; size_t available_length ; size_t begin_length ; size_t n_begin ; size_t q_length ; if ( ! extra_length ) return ; memory_length = qp -> d_memory_end - qp -> d_memory ; q_length = qp -> d_read <= qp -> d_write ? ( size_t ) ( qp -> d_write - qp -> d_read ) : memory_length - ( qp -> d_read - qp -> d_write ) ; available_length = memory_length - q_length - 1 ; if ( message_show ( MSG_INFO ) ) message ( \"push_front<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>`%s\\'\" , ( unsigned ) extra_length , info ) ; if ( extra_length > available_length ) { <S2SV_StartBug> memory_length += extra_length - available_length + BLOCK_QUEUE ; <S2SV_EndBug> cp = new_memory ( memory_length , sizeof ( char ) ) ; if ( message_show ( MSG_INFO ) ) message ( \"Reallocating<S2SV_blank>queue<S2SV_blank>at<S2SV_blank>%p<S2SV_blank>to<S2SV_blank>%p\" , qp -> d_memory , cp ) ; if ( qp -> d_read > qp -> d_write ) { size_t tail_len = qp -> d_memory_end - qp -> d_read ; memcpy ( cp , qp -> d_read , tail_len ) ; memcpy ( cp + tail_len , qp -> d_memory , ( size_t ) ( qp -> d_write - qp -> d_memory ) ) ; qp -> d_write = cp + q_length ; qp -> d_read = cp ; } else { <S2SV_StartBug> memcpy ( cp , qp -> d_memory , memory_length ) ; <S2SV_EndBug> qp -> d_read = cp + ( qp -> d_read - qp -> d_memory ) ; qp -> d_write = cp + ( qp -> d_write - qp -> d_memory ) ; } free ( qp -> d_memory ) ; qp -> d_memory_end = cp + memory_length ; qp -> d_memory = cp ; } begin_length = qp -> d_read - qp -> d_memory ; n_begin = extra_length <= begin_length ? extra_length : begin_length ; memcpy ( qp -> d_read -= n_begin , info + extra_length - n_begin , n_begin ) ; if ( extra_length > begin_length ) { extra_length -= begin_length ; memcpy ( qp -> d_read = qp -> d_memory_end - extra_length , info , extra_length ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> available_length ) { size_t original_length = memory_length ; <S2SV_ModStart> -> d_memory , original_length <S2SV_ModEnd> ) ; qp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10010\n\n```\nCWE-264 static int server_input_global_request ( int type , u_int32_t seq , void * ctxt ) { char * rtype ; int want_reply ; int r , success = 0 , allocated_listen_port = 0 ; struct sshbuf * resp = NULL ; rtype = packet_get_string ( NULL ) ; want_reply = packet_get_char ( ) ; debug ( \"server_input_global_request:<S2SV_blank>rtype<S2SV_blank>%s<S2SV_blank>want_reply<S2SV_blank>%d\" , rtype , want_reply ) ; if ( strcmp ( rtype , \"tcpip-forward\" ) == 0 ) { struct passwd * pw ; struct Forward fwd ; pw = the_authctxt -> pw ; if ( pw == NULL || ! the_authctxt -> valid ) fatal ( \"server_input_global_request:<S2SV_blank>no/invalid<S2SV_blank>user\" ) ; memset ( & fwd , 0 , sizeof ( fwd ) ) ; fwd . listen_host = packet_get_string ( NULL ) ; fwd . listen_port = ( u_short ) packet_get_int ( ) ; debug ( \"server_input_global_request:<S2SV_blank>tcpip-forward<S2SV_blank>listen<S2SV_blank>%s<S2SV_blank>port<S2SV_blank>%d\" , fwd . listen_host , fwd . listen_port ) ; if ( ( options . allow_tcp_forwarding & FORWARD_REMOTE ) == 0 || no_port_forwarding_flag || options . disable_forwarding || ( ! want_reply && fwd . listen_port == 0 ) || ( fwd . listen_port != 0 && ! bind_permitted ( fwd . listen_port , pw -> pw_uid ) ) ) { success = 0 ; packet_send_debug ( \"Server<S2SV_blank>has<S2SV_blank>disabled<S2SV_blank>port<S2SV_blank>forwarding.\" ) ; } else { success = channel_setup_remote_fwd_listener ( & fwd , & allocated_listen_port , & options . fwd_opts ) ; } free ( fwd . listen_host ) ; if ( ( resp = sshbuf_new ( ) ) == NULL ) fatal ( \"%s:<S2SV_blank>sshbuf_new\" , __func__ ) ; if ( allocated_listen_port != 0 && ( r = sshbuf_put_u32 ( resp , allocated_listen_port ) ) != 0 ) fatal ( \"%s:<S2SV_blank>sshbuf_put_u32:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; } else if ( strcmp ( rtype , \"cancel-tcpip-forward\" ) == 0 ) { struct Forward fwd ; memset ( & fwd , 0 , sizeof ( fwd ) ) ; fwd . listen_host = packet_get_string ( NULL ) ; fwd . listen_port = ( u_short ) packet_get_int ( ) ; debug ( \"%s:<S2SV_blank>cancel-tcpip-forward<S2SV_blank>addr<S2SV_blank>%s<S2SV_blank>port<S2SV_blank>%d\" , __func__ , fwd . listen_host , fwd . listen_port ) ; success = channel_cancel_rport_listener ( & fwd ) ; free ( fwd . listen_host ) ; } else if ( strcmp ( rtype , \"streamlocal-forward@openssh.com\" ) == 0 ) { struct Forward fwd ; memset ( & fwd , 0 , sizeof ( fwd ) ) ; fwd . listen_path = packet_get_string ( NULL ) ; debug ( \"server_input_global_request:<S2SV_blank>streamlocal-forward<S2SV_blank>listen<S2SV_blank>path<S2SV_blank>%s\" , fwd . listen_path ) ; if ( ( options . allow_streamlocal_forwarding & FORWARD_REMOTE ) == 0 <S2SV_StartBug> || no_port_forwarding_flag || options . disable_forwarding ) { <S2SV_EndBug> success = 0 ; packet_send_debug ( \"Server<S2SV_blank>has<S2SV_blank>disabled<S2SV_blank>port<S2SV_blank>forwarding.\" ) ; } else { success = channel_setup_remote_fwd_listener ( & fwd , NULL , & options . fwd_opts ) ; } free ( fwd . listen_path ) ; } else if ( strcmp ( rtype , \"cancel-streamlocal-forward@openssh.com\" ) == 0 ) { struct Forward fwd ; memset ( & fwd , 0 , sizeof ( fwd ) ) ; fwd . listen_path = packet_get_string ( NULL ) ; debug ( \"%s:<S2SV_blank>cancel-streamlocal-forward<S2SV_blank>path<S2SV_blank>%s\" , __func__ , fwd . listen_path ) ; success = channel_cancel_rport_listener ( & fwd ) ; free ( fwd . listen_path ) ; } else if ( strcmp ( rtype , \"no-more-sessions@openssh.com\" ) == 0 ) { no_more_sessions = 1 ; success = 1 ; } else if ( strcmp ( rtype , \"hostkeys-prove-00@openssh.com\" ) == 0 ) { success = server_input_hostkeys_prove ( & resp ) ; } if ( want_reply ) { packet_start ( success ? SSH2_MSG_REQUEST_SUCCESS : SSH2_MSG_REQUEST_FAILURE ) ; if ( success && resp != NULL ) ssh_packet_put_raw ( active_state , sshbuf_ptr ( resp ) , sshbuf_len ( resp ) ) ; packet_send ( ) ; packet_write_wait ( ) ; } free ( rtype ) ; sshbuf_free ( resp ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> options . disable_forwarding || ! use_privsep\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15868\n\n```\nCWE-20 int bnep_add_connection ( struct bnep_connadd_req * req , struct socket * sock ) { struct net_device * dev ; struct bnep_session * s , * ss ; u8 dst [ ETH_ALEN ] , src [ ETH_ALEN ] ; int err ; BT_DBG ( \"\" ) ; <S2SV_StartBug> baswap ( ( void * ) dst , & l2cap_pi ( sock -> sk ) -> chan -> dst ) ; <S2SV_EndBug> baswap ( ( void * ) src , & l2cap_pi ( sock -> sk ) -> chan -> src ) ; dev = alloc_netdev ( sizeof ( struct bnep_session ) , ( * req -> device ) ? req -> device : \"bnep%d\" , NET_NAME_UNKNOWN , bnep_net_setup ) ; if ( ! dev ) return - ENOMEM ; down_write ( & bnep_session_sem ) ; ss = __bnep_get_session ( dst ) ; if ( ss && ss -> state == BT_CONNECTED ) { err = - EEXIST ; goto failed ; } s = netdev_priv ( dev ) ; memcpy ( s -> eh . h_dest , & src , ETH_ALEN ) ; memcpy ( s -> eh . h_source , & dst , ETH_ALEN ) ; memcpy ( dev -> dev_addr , s -> eh . h_dest , ETH_ALEN ) ; s -> dev = dev ; s -> sock = sock ; s -> role = req -> role ; s -> state = BT_CONNECTED ; s -> msg . msg_flags = MSG_NOSIGNAL ; # ifdef CONFIG_BT_BNEP_MC_FILTER set_bit ( bnep_mc_hash ( dev -> broadcast ) , ( ulong * ) & s -> mc_filter ) ; # endif # ifdef CONFIG_BT_BNEP_PROTO_FILTER bnep_set_default_proto_filter ( s ) ; # endif SET_NETDEV_DEV ( dev , bnep_get_device ( s ) ) ; SET_NETDEV_DEVTYPE ( dev , & bnep_type ) ; err = register_netdev ( dev ) ; if ( err ) goto failed ; __bnep_link_session ( s ) ; __module_get ( THIS_MODULE ) ; s -> task = kthread_run ( bnep_session , s , \"kbnepd<S2SV_blank>%s\" , dev -> name ) ; if ( IS_ERR ( s -> task ) ) { module_put ( THIS_MODULE ) ; unregister_netdev ( dev ) ; __bnep_unlink_session ( s ) ; err = PTR_ERR ( s -> task ) ; goto failed ; } up_write ( & bnep_session_sem ) ; strcpy ( req -> device , dev -> name ) ; return 0 ; failed : up_write ( & bnep_session_sem ) ; free_netdev ( dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"\" ) ; if ( ! l2cap_is_socket ( sock ) ) return - EBADFD ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6800\n\n```\nCWE-000 krb5_error_code setup_server_realm ( krb5_principal sprinc ) { krb5_error_code kret ; kdc_realm_t * newrealm ; <S2SV_StartBug> kret = 0 ; <S2SV_EndBug> if ( kdc_numrealms > 1 ) { if ( ! ( newrealm = find_realm_data ( sprinc -> realm . data , ( krb5_ui_4 ) sprinc -> realm . length ) ) ) kret = ENOENT ; else kdc_active_realm = newrealm ; } else kdc_active_realm = kdc_realmlist [ 0 ] ; return ( kret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> kret = 0 ; if ( sprinc == NULL ) return NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6689\n\n```\nCWE-284 static int netlink_sendmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct sock * sk = sock -> sk ; struct netlink_sock * nlk = nlk_sk ( sk ) ; struct sockaddr_nl * addr = msg -> msg_name ; u32 dst_pid ; u32 dst_group ; struct sk_buff * skb ; int err ; struct scm_cookie scm ; if ( msg -> msg_flags & MSG_OOB ) return - EOPNOTSUPP ; if ( NULL == siocb -> scm ) siocb -> scm = & scm ; err = scm_send ( sock , msg , siocb -> scm , true ) ; if ( err < 0 ) return err ; if ( msg -> msg_namelen ) { err = - EINVAL ; if ( addr -> nl_family != AF_NETLINK ) goto out ; dst_pid = addr -> nl_pid ; dst_group = ffs ( addr -> nl_groups ) ; err = - EPERM ; <S2SV_StartBug> if ( dst_group && ! netlink_capable ( sock , NL_NONROOT_SEND ) ) <S2SV_EndBug> goto out ; } else { dst_pid = nlk -> dst_pid ; dst_group = nlk -> dst_group ; } if ( ! nlk -> pid ) { err = netlink_autobind ( sock ) ; if ( err ) goto out ; } err = - EMSGSIZE ; if ( len > sk -> sk_sndbuf - 32 ) goto out ; err = - ENOBUFS ; skb = alloc_skb ( len , GFP_KERNEL ) ; if ( skb == NULL ) goto out ; NETLINK_CB ( skb ) . pid = nlk -> pid ; NETLINK_CB ( skb ) . dst_group = dst_group ; memcpy ( NETLINK_CREDS ( skb ) , & siocb -> scm -> creds , sizeof ( struct ucred ) ) ; err = - EFAULT ; if ( memcpy_fromiovec ( skb_put ( skb , len ) , msg -> msg_iov , len ) ) { kfree_skb ( skb ) ; goto out ; } err = security_netlink_send ( sk , skb ) ; if ( err ) { kfree_skb ( skb ) ; goto out ; } if ( dst_group ) { atomic_inc ( & skb -> users ) ; netlink_broadcast ( sk , skb , dst_pid , dst_group , GFP_KERNEL ) ; } err = netlink_unicast ( sk , skb , dst_pid , msg -> msg_flags & MSG_DONTWAIT ) ; out : scm_destroy ( siocb -> scm ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( dst_group || dst_pid ) <S2SV_ModEnd> && ! netlink_capable\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> MB_PREDICTION_MODE vp9_above_block_mode ( const MODE_INFO * cur_mi , <S2SV_EndBug> const MODE_INFO * above_mi , int b ) { if ( b == 0 || b == 1 ) { if ( ! above_mi || is_inter_block ( & above_mi -> mbmi ) ) return DC_PRED ; return get_y_mode ( above_mi , b + 2 ) ; } else { assert ( b == 2 || b == 3 ) ; return cur_mi -> bmi [ b - 2 ] . as_mode ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> PREDICTION_MODE <S2SV_ModEnd> vp9_above_block_mode ( const\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010298\n\n```\nCWE-119 TEE_Result syscall_asymm_operate ( unsigned long state , const struct utee_attribute * usr_params , size_t num_params , const void * src_data , size_t src_len , void * dst_data , uint64_t * dst_len ) { TEE_Result res ; struct tee_cryp_state * cs ; struct tee_ta_session * sess ; uint64_t dlen64 ; size_t dlen ; struct tee_obj * o ; void * label = NULL ; size_t label_len = 0 ; size_t n ; int salt_len ; TEE_Attribute * params = NULL ; struct user_ta_ctx * utc ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; utc = to_user_ta_ctx ( sess -> ctx ) ; res = tee_svc_cryp_get_state ( sess , tee_svc_uref_to_vaddr ( state ) , & cs ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) src_data , src_len ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_svc_copy_from_user ( & dlen64 , dst_len , sizeof ( dlen64 ) ) ; if ( res != TEE_SUCCESS ) return res ; dlen = dlen64 ; res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_WRITE | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) dst_data , dlen ) ; if ( res != TEE_SUCCESS ) return res ; <S2SV_StartBug> params = malloc ( sizeof ( TEE_Attribute ) * num_params ) ; <S2SV_EndBug> if ( ! params ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( utc , usr_params , num_params , params ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_obj_get ( utc , cs -> key1 , & o ) ; if ( res != TEE_SUCCESS ) goto out ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_INITIALIZED ) == 0 ) { res = TEE_ERROR_GENERIC ; goto out ; } switch ( cs -> algo ) { case TEE_ALG_RSA_NOPAD : if ( cs -> mode == TEE_MODE_ENCRYPT ) { res = crypto_acipher_rsanopad_encrypt ( o -> attr , src_data , src_len , dst_data , & dlen ) ; } else if ( cs -> mode == TEE_MODE_DECRYPT ) { res = crypto_acipher_rsanopad_decrypt ( o -> attr , src_data , src_len , dst_data , & dlen ) ; } else { res = TEE_ERROR_GENERIC ; } break ; case TEE_ALG_RSAES_PKCS1_V1_5 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA1 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA224 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA256 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA384 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA512 : for ( n = 0 ; n < num_params ; n ++ ) { if ( params [ n ] . attributeID == TEE_ATTR_RSA_OAEP_LABEL ) { label = params [ n ] . content . ref . buffer ; label_len = params [ n ] . content . ref . length ; break ; } } if ( cs -> mode == TEE_MODE_ENCRYPT ) { res = crypto_acipher_rsaes_encrypt ( cs -> algo , o -> attr , label , label_len , src_data , src_len , dst_data , & dlen ) ; } else if ( cs -> mode == TEE_MODE_DECRYPT ) { res = crypto_acipher_rsaes_decrypt ( cs -> algo , o -> attr , label , label_len , src_data , src_len , dst_data , & dlen ) ; } else { res = TEE_ERROR_BAD_PARAMETERS ; } break ; # if defined ( CFG_CRYPTO_RSASSA_NA1 ) case TEE_ALG_RSASSA_PKCS1_V1_5 : # endif case TEE_ALG_RSASSA_PKCS1_V1_5_MD5 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA1 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA224 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA256 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA384 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA512 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA1 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA224 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA256 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA384 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA512 : if ( cs -> mode != TEE_MODE_SIGN ) { res = TEE_ERROR_BAD_PARAMETERS ; break ; } salt_len = pkcs1_get_salt_len ( params , num_params , src_len ) ; res = crypto_acipher_rsassa_sign ( cs -> algo , o -> attr , salt_len , src_data , src_len , dst_data , & dlen ) ; break ; case TEE_ALG_DSA_SHA1 : case TEE_ALG_DSA_SHA224 : case TEE_ALG_DSA_SHA256 : res = crypto_acipher_dsa_sign ( cs -> algo , o -> attr , src_data , src_len , dst_data , & dlen ) ; break ; case TEE_ALG_ECDSA_P192 : case TEE_ALG_ECDSA_P224 : case TEE_ALG_ECDSA_P256 : case TEE_ALG_ECDSA_P384 : case TEE_ALG_ECDSA_P521 : res = crypto_acipher_ecc_sign ( cs -> algo , o -> attr , src_data , src_len , dst_data , & dlen ) ; break ; default : res = TEE_ERROR_BAD_PARAMETERS ; break ; } out : free ( params ) ; if ( res == TEE_SUCCESS || res == TEE_ERROR_SHORT_BUFFER ) { TEE_Result res2 ; dlen64 = dlen ; res2 = tee_svc_copy_to_user ( dst_len , & dlen64 , sizeof ( * dst_len ) ) ; if ( res2 != TEE_SUCCESS ) return res2 ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , num_params , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0836\n\n```\nCWE-119 IMPEG2D_ERROR_CODES_T impeg2d_vld_decode ( dec_state_t * ps_dec , WORD16 * pi2_outAddr , const UWORD8 * pu1_scan , UWORD8 * pu1_pos , UWORD16 u2_intra_flag , UWORD16 u2_chroma_flag , UWORD16 u2_d_picture , UWORD16 u2_intra_vlc_format , UWORD16 u2_mpeg2 , WORD32 * pi4_num_coeffs ) { UWORD32 u4_sym_len ; UWORD32 u4_decoded_value ; UWORD32 u4_level_first_byte ; WORD32 u4_level ; UWORD32 u4_run , u4_numCoeffs ; UWORD32 u4_buf ; UWORD32 u4_buf_nxt ; UWORD32 u4_offset ; UWORD32 * pu4_buf_aligned ; UWORD32 u4_bits ; stream_t * ps_stream = & ps_dec -> s_bit_stream ; WORD32 u4_pos ; UWORD32 u4_nz_cols ; UWORD32 u4_nz_rows ; * pi4_num_coeffs = 0 ; ps_dec -> u4_non_zero_cols = 0 ; ps_dec -> u4_non_zero_rows = 0 ; u4_nz_cols = ps_dec -> u4_non_zero_cols ; u4_nz_rows = ps_dec -> u4_non_zero_rows ; GET_TEMP_STREAM_DATA ( u4_buf , u4_buf_nxt , u4_offset , pu4_buf_aligned , ps_stream ) if ( u2_intra_flag ) { WORD32 dc_size ; WORD32 dc_diff ; WORD32 maxLen ; WORD32 idx ; maxLen = MPEG2_DCT_DC_SIZE_LEN ; idx = 0 ; if ( u2_chroma_flag != 0 ) { maxLen += 1 ; idx ++ ; } { WORD16 end = 0 ; UWORD32 maxLen_tmp = maxLen ; UWORD16 m_iBit ; IBITS_NXT ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , maxLen ) do { maxLen_tmp -- ; m_iBit = ( UWORD8 ) ( ( u4_bits >> maxLen_tmp ) & 0x1 ) ; end = gai2_impeg2d_dct_dc_size [ idx ] [ end ] [ m_iBit ] ; } while ( end > 0 ) ; dc_size = end + MPEG2_DCT_DC_SIZE_OFFSET ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , ( maxLen - maxLen_tmp ) , pu4_buf_aligned ) } if ( dc_size != 0 ) { UWORD32 u4_bits ; IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , dc_size ) dc_diff = u4_bits ; if ( ( dc_diff & ( 1 << ( dc_size - 1 ) ) ) == 0 ) dc_diff -= ( 1 << dc_size ) - 1 ; } else { dc_diff = 0 ; } pi2_outAddr [ * pi4_num_coeffs ] = dc_diff ; pu1_pos [ * pi4_num_coeffs ] = pu1_scan [ 0 ] ; ( * pi4_num_coeffs ) ++ ; if ( 0 != dc_diff ) { u4_nz_cols |= 0x01 ; u4_nz_rows |= 0x01 ; } u4_numCoeffs = 1 ; } else { UWORD32 u4_bits ; IBITS_NXT ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , 1 ) if ( u4_bits == 1 ) { FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , 1 , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 1 ) if ( u4_bits == 1 ) { pi2_outAddr [ * pi4_num_coeffs ] = - 1 ; } else { pi2_outAddr [ * pi4_num_coeffs ] = 1 ; } pu1_pos [ * pi4_num_coeffs ] = pu1_scan [ 0 ] ; ( * pi4_num_coeffs ) ++ ; u4_numCoeffs = 1 ; u4_nz_cols |= 0x01 ; u4_nz_rows |= 0x01 ; } else { u4_numCoeffs = 0 ; } } if ( 1 == u2_d_picture ) { PUT_TEMP_STREAM_DATA ( u4_buf , u4_buf_nxt , u4_offset , pu4_buf_aligned , ps_stream ) ps_dec -> u4_non_zero_cols = u4_nz_cols ; ps_dec -> u4_non_zero_rows = u4_nz_rows ; return ( ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ) ; } if ( 1 == u2_intra_vlc_format && u2_intra_flag ) { while ( 1 ) { UWORD32 lead_zeros ; WORD16 DecodedValue ; u4_sym_len = 17 ; IBITS_NXT ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , u4_sym_len ) DecodedValue = gau2_impeg2d_tab_one_1_9 [ u4_bits >> 8 ] ; u4_sym_len = ( DecodedValue & 0xf ) ; u4_level = DecodedValue >> 9 ; if ( 0 != u4_level ) { u4_run = ( ( DecodedValue >> 4 ) & 0x1f ) ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else { if ( DecodedValue == END_OF_BLOCK_ONE ) { u4_sym_len = 4 ; break ; } else { lead_zeros = CLZ ( u4_bits ) - 20 ; if ( 0 != lead_zeros ) { u4_bits = ( u4_bits >> ( 6 - lead_zeros ) ) & 0x001F ; if ( 1 == lead_zeros ) { u4_sym_len = ( ( u4_bits & 0x18 ) >> 3 ) == 2 ? 11 : 10 ; } else { u4_sym_len = 11 + lead_zeros ; } FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) u4_bits = ( ( lead_zeros - 1 ) << 5 ) + u4_bits ; DecodedValue = gau2_impeg2d_tab_one_10_16 [ u4_bits ] ; u4_run = BITS ( DecodedValue , 8 , 4 ) ; u4_level = ( ( WORD16 ) DecodedValue ) >> 9 ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else if ( u2_mpeg2 == 1 ) { u4_sym_len = 6 ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 18 ) u4_decoded_value = u4_bits ; u4_run = ( u4_decoded_value >> 12 ) ; u4_level = ( u4_decoded_value & 0x0FFF ) ; if ( u4_level ) u4_level = ( u4_level - ( ( u4_level & 0x0800 ) << 1 ) ) ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else { u4_sym_len = 6 ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 14 ) u4_decoded_value = u4_bits ; u4_run = ( u4_decoded_value >> 8 ) ; u4_level_first_byte = ( u4_decoded_value & 0x0FF ) ; if ( u4_level_first_byte & 0x7F ) { u4_level = ( u4_level_first_byte - ( ( u4_level_first_byte & 0x80 ) << 1 ) ) ; } else { IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 8 ) u4_level = u4_bits ; u4_level = ( u4_level - ( u4_level_first_byte << 1 ) ) ; } u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } } } u4_nz_cols |= 1 << ( u4_pos & 0x7 ) ; u4_nz_rows |= 1 << ( u4_pos >> 0x3 ) ; <S2SV_StartBug> } <S2SV_EndBug> IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , u4_sym_len ) if ( u4_numCoeffs > 64 ) { return IMPEG2D_MB_TEX_DECODE_ERR ; <S2SV_StartBug> } <S2SV_EndBug> } else { while ( 1 ) { UWORD32 lead_zeros ; UWORD16 DecodedValue ; u4_sym_len = 17 ; IBITS_NXT ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , u4_sym_len ) DecodedValue = gau2_impeg2d_tab_zero_1_9 [ u4_bits >> 8 ] ; u4_sym_len = BITS ( DecodedValue , 3 , 0 ) ; u4_level = ( ( WORD16 ) DecodedValue ) >> 9 ; if ( 0 != u4_level ) { u4_run = BITS ( DecodedValue , 8 , 4 ) ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else { if ( DecodedValue == END_OF_BLOCK_ZERO ) { u4_sym_len = 2 ; break ; } else { lead_zeros = CLZ ( u4_bits ) - 20 ; if ( 0 != lead_zeros ) { u4_bits = ( u4_bits >> ( 6 - lead_zeros ) ) & 0x001F ; u4_sym_len = 11 + lead_zeros ; u4_bits = ( ( lead_zeros - 1 ) << 5 ) + u4_bits ; DecodedValue = gau2_impeg2d_tab_zero_10_16 [ u4_bits ] ; u4_run = BITS ( DecodedValue , 8 , 4 ) ; u4_level = ( ( WORD16 ) DecodedValue ) >> 9 ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; if ( 1 == lead_zeros ) u4_sym_len -- ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else if ( u2_mpeg2 == 1 ) { u4_sym_len = 6 ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 18 ) u4_decoded_value = u4_bits ; u4_run = ( u4_decoded_value >> 12 ) ; u4_level = ( u4_decoded_value & 0x0FFF ) ; if ( u4_level ) u4_level = ( u4_level - ( ( u4_level & 0x0800 ) << 1 ) ) ; u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } else { u4_sym_len = 6 ; FLUSH_BITS ( u4_offset , u4_buf , u4_buf_nxt , u4_sym_len , pu4_buf_aligned ) IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 14 ) u4_decoded_value = u4_bits ; u4_run = ( u4_decoded_value >> 8 ) ; u4_level_first_byte = ( u4_decoded_value & 0x0FF ) ; if ( u4_level_first_byte & 0x7F ) { u4_level = ( u4_level_first_byte - ( ( u4_level_first_byte & 0x80 ) << 1 ) ) ; } else { IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , 8 ) u4_level = u4_bits ; u4_level = ( u4_level - ( u4_level_first_byte << 1 ) ) ; } u4_numCoeffs += u4_run ; u4_pos = pu1_scan [ u4_numCoeffs ++ & 63 ] ; pu1_pos [ * pi4_num_coeffs ] = u4_pos ; pi2_outAddr [ * pi4_num_coeffs ] = u4_level ; ( * pi4_num_coeffs ) ++ ; } } } u4_nz_cols |= 1 << ( u4_pos & 0x7 ) ; u4_nz_rows |= 1 << ( u4_pos >> 0x3 ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( u4_numCoeffs > 64 ) { <S2SV_StartBug> return IMPEG2D_MB_TEX_DECODE_ERR ; <S2SV_EndBug> } IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , u4_sym_len ) } PUT_TEMP_STREAM_DATA ( u4_buf , u4_buf_nxt , u4_offset , pu4_buf_aligned , ps_stream ) ps_dec -> u4_non_zero_cols = u4_nz_cols ; ps_dec -> u4_non_zero_rows = u4_nz_rows ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0x3 ) ; <S2SV_ModEnd> if ( u4_numCoeffs <S2SV_ModStart> IMPEG2D_MB_TEX_DECODE_ERR ; } } IBITS_GET ( u4_buf , u4_buf_nxt , u4_offset , u4_bits , pu4_buf_aligned , u4_sym_len ) <S2SV_ModStart> 0x3 ) ; <S2SV_ModEnd> if ( u4_numCoeffs <S2SV_ModStart> return IMPEG2D_MB_TEX_DECODE_ERR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2694\n\n```\nCWE-264 static void otp_verify ( krb5_context context , krb5_data * req_pkt , krb5_kdc_req * request , krb5_enc_tkt_part * enc_tkt_reply , krb5_pa_data * pa , krb5_kdcpreauth_callbacks cb , krb5_kdcpreauth_rock rock , krb5_kdcpreauth_moddata moddata , krb5_kdcpreauth_verify_respond_fn respond , void * arg ) { krb5_keyblock * armor_key = NULL ; krb5_pa_otp_req * req = NULL ; struct request_state * rs ; krb5_error_code retval ; krb5_data d , plaintext ; char * config ; <S2SV_StartBug> enc_tkt_reply -> flags |= TKT_FLG_PRE_AUTH ; <S2SV_EndBug> armor_key = cb -> fast_armor ( context , rock ) ; if ( armor_key == NULL ) { retval = KRB5KDC_ERR_PREAUTH_FAILED ; com_err ( \"otp\" , retval , \"No<S2SV_blank>armor<S2SV_blank>key<S2SV_blank>found<S2SV_blank>when<S2SV_blank>verifying<S2SV_blank>padata\" ) ; goto error ; } d = make_data ( pa -> contents , pa -> length ) ; retval = decode_krb5_pa_otp_req ( & d , & req ) ; if ( retval != 0 ) { com_err ( \"otp\" , retval , \"Unable<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>OTP<S2SV_blank>request\" ) ; goto error ; } retval = decrypt_encdata ( context , armor_key , req , & plaintext ) ; if ( retval != 0 ) { com_err ( \"otp\" , retval , \"Unable<S2SV_blank>to<S2SV_blank>decrypt<S2SV_blank>nonce\" ) ; goto error ; } retval = nonce_verify ( context , armor_key , & plaintext ) ; if ( retval != 0 ) retval = timestamp_verify ( context , & plaintext ) ; krb5_free_data_contents ( context , & plaintext ) ; if ( retval != 0 ) { com_err ( \"otp\" , retval , \"Unable<S2SV_blank>to<S2SV_blank>verify<S2SV_blank>nonce<S2SV_blank>or<S2SV_blank>timestamp\" ) ; goto error ; } rs = k5alloc ( sizeof ( struct request_state ) , & retval ) ; if ( rs == NULL ) goto error ; rs -> arg = arg ; <S2SV_StartBug> rs -> respond = respond ; <S2SV_EndBug> retval = cb -> get_string ( context , rock , \"otp\" , & config ) ; if ( retval == 0 && config == NULL ) retval = KRB5_PREAUTH_FAILED ; if ( retval != 0 ) { free ( rs ) ; goto error ; } otp_state_verify ( ( otp_state * ) moddata , cb -> event_context ( context , rock ) , request -> client , config , req , on_response , rs ) ; cb -> free_string ( context , rock , config ) ; k5_free_pa_otp_req ( context , req ) ; return ; error : k5_free_pa_otp_req ( context , req ) ; ( * respond ) ( arg , retval , NULL , NULL , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * config ; <S2SV_ModEnd> armor_key = cb <S2SV_ModStart> respond = respond ; rs -> enc_tkt_reply = enc_tkt_reply\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadDCMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char explicit_vr [ MaxTextExtent ] , implicit_vr [ MaxTextExtent ] , magick [ MaxTextExtent ] , photometric [ MaxTextExtent ] ; DCMStreamInfo * stream_info ; Image * image ; int * bluemap , datum , * greenmap , * graymap , index , * redmap ; MagickBooleanType explicit_file , explicit_retry , polarity , sequence , use_explicit ; MagickOffsetType offset ; Quantum * scale ; register IndexPacket * indexes ; register ssize_t i , x ; register PixelPacket * q ; register unsigned char * p ; size_t bits_allocated , bytes_per_pixel , colors , depth , height , length , mask , max_value , number_scenes , quantum , samples_per_pixel , signed_data , significant_bits , status , width , window_width ; ssize_t count , scene , window_center , y ; unsigned char * data ; unsigned short group , element ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 8UL ; image -> endian = LSBEndian ; stream_info = ( DCMStreamInfo * ) AcquireMagickMemory ( sizeof ( * stream_info ) ) ; if ( stream_info == ( DCMStreamInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( stream_info , 0 , sizeof ( * stream_info ) ) ; count = ReadBlob ( image , 128 , ( unsigned char * ) magick ) ; if ( count != 128 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) magick ) ; if ( ( count != 4 ) || ( LocaleNCompare ( magick , \"DICM\" , 4 ) != 0 ) ) { offset = SeekBlob ( image , 0L , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickString ( photometric , \"MONOCHROME1<S2SV_blank>\" , MaxTextExtent ) ; bits_allocated = 8 ; bytes_per_pixel = 1 ; polarity = MagickFalse ; data = ( unsigned char * ) NULL ; depth = 8 ; element = 0 ; explicit_vr [ 2 ] = '\\\\0' ; explicit_file = MagickFalse ; colors = 0 ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; graymap = ( int * ) NULL ; height = 0 ; max_value = 255UL ; mask = 0xffff ; number_scenes = 1 ; samples_per_pixel = 1 ; scale = ( Quantum * ) NULL ; sequence = MagickFalse ; signed_data = ( ~ 0UL ) ; significant_bits = 0 ; use_explicit = MagickFalse ; explicit_retry = MagickFalse ; width = 0 ; window_center = 0 ; window_width = 0 ; for ( group = 0 ; ( group != 0x7FE0 ) || ( element != 0x0010 ) || ( sequence != MagickFalse ) ; ) { image -> offset = ( ssize_t ) TellBlob ( image ) ; group = ReadBlobLSBShort ( image ) ; element = ReadBlobLSBShort ( image ) ; if ( ( group != 0x0002 ) && ( image -> endian == MSBEndian ) ) { group = ( unsigned short ) ( ( group << 8 ) | ( ( group >> 8 ) & 0xFF ) ) ; element = ( unsigned short ) ( ( element << 8 ) | ( ( element >> 8 ) & 0xFF ) ) ; } quantum = 0 ; for ( i = 0 ; dicom_info [ i ] . group < 0xffff ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) CopyMagickString ( implicit_vr , dicom_info [ i ] . vr , MaxTextExtent ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) explicit_vr ) ; if ( count != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( explicit_file == MagickFalse ) && ( group != 0x0002 ) ) explicit_file = ( isupper ( ( unsigned char ) * explicit_vr ) != MagickFalse ) && ( isupper ( ( unsigned char ) * ( explicit_vr + 1 ) ) != MagickFalse ) ? MagickTrue : MagickFalse ; use_explicit = ( ( group == 0x0002 ) && ( explicit_retry == MagickFalse ) ) || ( explicit_file != MagickFalse ) ? MagickTrue : MagickFalse ; if ( ( use_explicit != MagickFalse ) && ( strcmp ( implicit_vr , \"xs\" ) == 0 ) ) ( void ) CopyMagickString ( implicit_vr , explicit_vr , MaxTextExtent ) ; if ( ( use_explicit == MagickFalse ) || ( strcmp ( implicit_vr , \"!!\" ) == 0 ) ) { offset = SeekBlob ( image , ( MagickOffsetType ) - 2 , SEEK_CUR ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; quantum = 4 ; } else { quantum = 2 ; if ( ( strcmp ( explicit_vr , \"OB\" ) == 0 ) || ( strcmp ( explicit_vr , \"UN\" ) == 0 ) || ( strcmp ( explicit_vr , \"OW\" ) == 0 ) || ( strcmp ( explicit_vr , \"SQ\" ) == 0 ) ) { ( void ) ReadBlobLSBShort ( image ) ; quantum = 4 ; } } datum = 0 ; if ( quantum == 4 ) { if ( group == 0x0002 ) datum = ( int ) ReadBlobLSBLong ( image ) ; else datum = ( int ) ReadBlobLong ( image ) ; } else if ( quantum == 2 ) { if ( group == 0x0002 ) datum = ( int ) ReadBlobLSBShort ( image ) ; else datum = ( int ) ReadBlobShort ( image ) ; } quantum = 0 ; length = 1 ; if ( datum != 0 ) { if ( ( strcmp ( implicit_vr , \"SS\" ) == 0 ) || ( strcmp ( implicit_vr , \"US\" ) == 0 ) ) quantum = 2 ; else if ( ( strcmp ( implicit_vr , \"UL\" ) == 0 ) || ( strcmp ( implicit_vr , \"SL\" ) == 0 ) || ( strcmp ( implicit_vr , \"FL\" ) == 0 ) ) quantum = 4 ; else if ( strcmp ( implicit_vr , \"FD\" ) != 0 ) quantum = 1 ; else quantum = 8 ; if ( datum != ~ 0 ) length = ( size_t ) datum / quantum ; else { quantum = 0 ; length = 0 ; } } if ( image_info -> verbose != MagickFalse ) { if ( use_explicit == MagickFalse ) explicit_vr [ 0 ] = '\\\\0' ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) FormatLocaleFile ( stdout , \"0x%04lX<S2SV_blank>%4ld<S2SV_blank>%s-%s<S2SV_blank>(0x%04lx,0x%04lx)\" , ( unsigned long ) image -> offset , ( long ) length , implicit_vr , explicit_vr , ( unsigned long ) group , ( unsigned long ) element ) ; if ( dicom_info [ i ] . description != ( char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"<S2SV_blank>%s\" , dicom_info [ i ] . description ) ; ( void ) FormatLocaleFile ( stdout , \":<S2SV_blank>\" ) ; } if ( ( sequence == MagickFalse ) && ( group == 0x7FE0 ) && ( element == 0x0010 ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; break ; } data = ( unsigned char * ) NULL ; if ( ( length == 1 ) && ( quantum == 1 ) ) datum = ( int ) ReadBlobByte ( image ) ; else if ( ( length == 1 ) && ( quantum == 2 ) ) { if ( group == 0x0002 ) datum = ( int ) ReadBlobLSBShort ( image ) ; else datum = ( int ) ReadBlobShort ( image ) ; } else if ( ( length == 1 ) && ( quantum == 4 ) ) { if ( group == 0x0002 ) datum = ( int ) ReadBlobLSBLong ( image ) ; else datum = ( int ) ReadBlobLong ( image ) ; } else if ( ( quantum != 0 ) && ( length != 0 ) ) { if ( ~ length >= 1 ) data = ( unsigned char * ) AcquireQuantumMemory ( length + 1 , quantum * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) quantum * length , data ) ; if ( count != ( ssize_t ) ( quantum * length ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"count=%d<S2SV_blank>quantum=%d<S2SV_blank>\" \"length=%d<S2SV_blank>group=%d\\\\n\" , ( int ) count , ( int ) quantum , ( int ) length , ( int ) group ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } data [ length * quantum ] = '\\\\0' ; } else if ( ( unsigned int ) datum == 0xFFFFFFFFU ) { sequence = MagickTrue ; continue ; } if ( ( unsigned int ) ( ( group << 16 ) | element ) == 0xFFFEE0DD ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; sequence = MagickFalse ; continue ; } if ( sequence != MagickFalse ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; continue ; } switch ( group ) { case 0x0002 : { switch ( element ) { case 0x0010 : { char transfer_syntax [ MaxTextExtent ] ; if ( ( datum == 0 ) && ( explicit_retry == MagickFalse ) ) { explicit_retry = MagickTrue ; ( void ) SeekBlob ( image , ( MagickOffsetType ) 0 , SEEK_SET ) ; group = 0 ; element = 0 ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"Corrupted<S2SV_blank>image<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>explicit<S2SV_blank>format\\\\n\" ) ; break ; } * transfer_syntax = '\\\\0' ; if ( data != ( unsigned char * ) NULL ) ( void ) CopyMagickString ( transfer_syntax , ( char * ) data , MaxTextExtent ) ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"transfer_syntax=%s\\\\n\" , ( const char * ) transfer_syntax ) ; if ( strncmp ( transfer_syntax , \"1.2.840.10008.1.2\" , 17 ) == 0 ) { int subtype , type ; type = 0 ; subtype = 0 ; ( void ) sscanf ( transfer_syntax + 17 , \".%d.%d\" , & type , & subtype ) ; switch ( type ) { case 1 : { image -> endian = LSBEndian ; break ; } case 2 : { image -> endian = MSBEndian ; break ; } case 4 : { if ( ( subtype >= 80 ) && ( subtype <= 81 ) ) image -> compression = JPEGCompression ; else if ( ( subtype >= 90 ) && ( subtype <= 93 ) ) image -> compression = JPEG2000Compression ; else image -> compression = JPEGCompression ; break ; } case 5 : { image -> compression = RLECompression ; break ; } } } break ; } default : break ; } break ; } case 0x0028 : { switch ( element ) { case 0x0002 : { samples_per_pixel = ( size_t ) datum ; break ; } case 0x0004 : { for ( i = 0 ; i < ( ssize_t ) MagickMin ( length , MaxTextExtent - 1 ) ; i ++ ) photometric [ i ] = ( char ) data [ i ] ; photometric [ i ] = '\\\\0' ; polarity = LocaleCompare ( photometric , \"MONOCHROME1<S2SV_blank>\" ) == 0 ? MagickTrue : MagickFalse ; break ; } case 0x0006 : { if ( datum == 1 ) image -> interlace = PlaneInterlace ; break ; } case 0x0008 : { number_scenes = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x0010 : { height = ( size_t ) datum ; break ; } case 0x0011 : { width = ( size_t ) datum ; break ; } case 0x0100 : { bits_allocated = ( size_t ) datum ; bytes_per_pixel = 1 ; if ( datum > 8 ) bytes_per_pixel = 2 ; depth = bits_allocated ; if ( depth > 32 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; max_value = ( 1UL << bits_allocated ) - 1 ; break ; } case 0x0101 : { significant_bits = ( size_t ) datum ; bytes_per_pixel = 1 ; if ( significant_bits > 8 ) bytes_per_pixel = 2 ; depth = significant_bits ; if ( depth > 32 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; max_value = ( 1UL << significant_bits ) - 1 ; mask = ( size_t ) GetQuantumRange ( significant_bits ) ; break ; } case 0x0102 : { break ; } case 0x0103 : { signed_data = ( size_t ) datum ; break ; } case 0x1050 : { if ( data != ( unsigned char * ) NULL ) window_center = ( ssize_t ) StringToLong ( ( char * ) data ) ; break ; } case 0x1051 : { if ( data != ( unsigned char * ) NULL ) window_width = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x1200 : case 0x3006 : { if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / bytes_per_pixel ) ; datum = ( int ) colors ; graymap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * graymap ) ) ; if ( graymap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) if ( bytes_per_pixel == 1 ) graymap [ i ] = ( int ) data [ i ] ; else graymap [ i ] = ( int ) ( ( short * ) data ) [ i ] ; break ; } case 0x1201 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; redmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * redmap ) ) ; if ( redmap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; redmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1202 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; greenmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * greenmap ) ) ; if ( greenmap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; greenmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1203 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; bluemap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * bluemap ) ) ; if ( bluemap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; bluemap [ i ] = ( int ) index ; p += 2 ; } break ; } default : break ; } break ; } case 0x2050 : { switch ( element ) { case 0x0020 : { if ( ( data != ( unsigned char * ) NULL ) && ( strncmp ( ( char * ) data , \"INVERSE\" , 7 ) == 0 ) ) polarity = MagickTrue ; break ; } default : break ; } break ; } default : break ; } if ( data != ( unsigned char * ) NULL ) { char * attribute ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; if ( dicom_info [ i ] . description != ( char * ) NULL ) { attribute = AcquireString ( \"dcm:\" ) ; ( void ) ConcatenateString ( & attribute , dicom_info [ i ] . description ) ; for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i == ( ssize_t ) length ) || ( length > 4 ) ) { ( void ) SubstituteString ( & attribute , \"<S2SV_blank>\" , \"\" ) ; ( void ) SetImageProperty ( image , attribute , ( char * ) data ) ; } attribute = DestroyString ( attribute ) ; } } if ( image_info -> verbose != MagickFalse ) { if ( data == ( unsigned char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"%d\\\\n\" , datum ) ; else { for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i != ( ssize_t ) length ) && ( length <= 4 ) ) { ssize_t j ; datum = 0 ; for ( j = ( ssize_t ) length - 1 ; j >= 0 ; j -- ) datum = ( 256 * datum + data [ j ] ) ; ( void ) FormatLocaleFile ( stdout , \"%d\" , datum ) ; } else for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( isprint ( ( int ) data [ i ] ) != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"%c\" , data [ i ] ) ; else ( void ) FormatLocaleFile ( stdout , \"%c\" , '.' ) ; ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; } } if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( ( width == 0 ) || ( height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; if ( signed_data == 0xffff ) signed_data = ( size_t ) ( significant_bits == 16 ? 1 : 0 ) ; if ( ( image -> compression == JPEGCompression ) || ( image -> compression == JPEG2000Compression ) ) { Image * images ; ImageInfo * read_info ; int c ; size_t length ; unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { MagickOffsetType offset ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ( ( int ) ReadBlobLSBLong ( image ) ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; images = NewImageList ( ) ; for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { char filename [ MaxTextExtent ] ; const char * property ; FILE * file ; Image * jpeg_image ; int unique_file ; unsigned int tag ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( tag == 0xFFFEE0DD ) break ; if ( tag != 0xFFFEE000 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( file == ( FILE * ) NULL ) { ( void ) RelinquishUniqueFileResource ( filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , filename ) ; break ; } for ( ; length != 0 ; length -- ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } ( void ) fputc ( c , file ) ; } ( void ) fclose ( file ) ; ( void ) FormatLocaleString ( read_info -> filename , MaxTextExtent , \"jpeg:%s\" , filename ) ; if ( image -> compression == JPEG2000Compression ) ( void ) FormatLocaleString ( read_info -> filename , MaxTextExtent , \"j2k:%s\" , filename ) ; jpeg_image = ReadImage ( read_info , exception ) ; if ( jpeg_image != ( Image * ) NULL ) { ResetImagePropertyIterator ( image ) ; property = GetNextImageProperty ( image ) ; while ( property != ( const char * ) NULL ) { ( void ) SetImageProperty ( jpeg_image , property , GetImageProperty ( image , property ) ) ; property = GetNextImageProperty ( image ) ; } AppendImageToList ( & images , jpeg_image ) ; } ( void ) RelinquishUniqueFileResource ( filename ) ; } read_info = DestroyImageInfo ( read_info ) ; image = DestroyImage ( image ) ; return ( GetFirstImageInList ( images ) ) ; } if ( depth != ( 1UL * MAGICKCORE_QUANTUM_DEPTH ) ) { QuantumAny range ; size_t length ; length = ( size_t ) ( GetQuantumRange ( depth ) + 1 ) ; scale = ( Quantum * ) AcquireQuantumMemory ( length , sizeof ( * scale ) ) ; if ( scale == ( Quantum * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; range = GetQuantumRange ( depth ) ; for ( i = 0 ; i < ( ssize_t ) ( GetQuantumRange ( depth ) + 1 ) ; i ++ ) scale [ i ] = ScaleAnyToQuantum ( ( size_t ) i , range ) ; } if ( image -> compression == RLECompression ) { size_t length ; unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { MagickOffsetType offset ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ( ( int ) ReadBlobLSBLong ( image ) ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } } for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { if ( image_info -> ping != MagickFalse ) break ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; image -> depth = depth ; <S2SV_StartBug> image -> colorspace = RGBColorspace ; <S2SV_EndBug> if ( ( image -> colormap == ( PixelPacket * ) NULL ) && ( samples_per_pixel == 1 ) ) { size_t one ; one = 1 ; if ( colors == 0 ) colors = one << depth ; if ( AcquireImageColormap ( image , one << depth ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( redmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = redmap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . red = ( Quantum ) index ; } if ( greenmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = greenmap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . green = ( Quantum ) index ; } if ( bluemap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = bluemap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . blue = ( Quantum ) index ; } if ( graymap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = graymap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . red = ( Quantum ) index ; image -> colormap [ i ] . green = ( Quantum ) index ; image -> colormap [ i ] . blue = ( Quantum ) index ; } } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; stream_info -> remaining = ( size_t ) ReadBlobLSBLong ( image ) ; if ( ( tag != 0xFFFEE000 ) || ( stream_info -> remaining <= 64 ) || ( EOFBlob ( image ) != MagickFalse ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; stream_info -> count = 0 ; stream_info -> segment_count = ReadBlobLSBLong ( image ) ; if ( stream_info -> segment_count > 1 ) { bytes_per_pixel = 1 ; depth = 8 ; } for ( i = 0 ; i < 15 ; i ++ ) stream_info -> segments [ i ] = ( ssize_t ) ( ( int ) ReadBlobLSBLong ( image ) ) ; stream_info -> remaining -= 64 ; } if ( ( samples_per_pixel > 1 ) && ( image -> interlace == PlaneInterlace ) ) { for ( i = 0 ; i < ( ssize_t ) samples_per_pixel ; i ++ ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( ( int ) i ) { case 0 : { SetPixelRed ( q , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) ) ; break ; } case 1 : { SetPixelGreen ( q , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) ) ; break ; } case 2 : { SetPixelBlue ( q , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) ) ; break ; } case 3 : { SetPixelAlpha ( q , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) ) ; break ; } default : break ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } } else { const char * option ; int byte ; LongPixelPacket pixel ; byte = 0 ; i = 0 ; if ( ( window_center != 0 ) && ( window_width == 0 ) ) window_width = ( size_t ) window_center ; option = GetImageOption ( image_info , \"dcm:display-range\" ) ; if ( option != ( const char * ) NULL ) { if ( LocaleCompare ( option , \"reset\" ) == 0 ) window_width = 0 ; } ( void ) ResetMagickMemory ( & pixel , 0 , sizeof ( pixel ) ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( samples_per_pixel == 1 ) { int pixel_value ; if ( bytes_per_pixel == 1 ) pixel_value = polarity != MagickFalse ? ( ( int ) max_value - ReadDCMByte ( stream_info , image ) ) : ReadDCMByte ( stream_info , image ) ; else if ( ( bits_allocated != 12 ) || ( significant_bits != 12 ) ) pixel_value = ( int ) ( polarity != MagickFalse ? ( max_value - ReadDCMShort ( stream_info , image ) ) : ReadDCMShort ( stream_info , image ) ) ; else { if ( ( i & 0x01 ) != 0 ) pixel_value = ( ReadDCMByte ( stream_info , image ) << 8 ) | byte ; else { pixel_value = ( int ) ReadDCMShort ( stream_info , image ) ; byte = ( int ) ( pixel_value & 0x0f ) ; pixel_value >>= 4 ; } i ++ ; } index = pixel_value ; if ( window_width == 0 ) { if ( signed_data == 1 ) index = pixel_value - 32767 ; } else { ssize_t window_max , window_min ; window_min = ( ssize_t ) ceil ( ( double ) window_center - ( window_width - 1.0 ) / 2.0 - 0.5 ) ; window_max = ( ssize_t ) floor ( ( double ) window_center + ( window_width - 1.0 ) / 2.0 + 0.5 ) ; if ( ( ssize_t ) pixel_value <= window_min ) index = 0 ; else if ( ( ssize_t ) pixel_value > window_max ) index = ( int ) max_value ; else index = ( int ) ( max_value * ( ( ( pixel_value - window_center - 0.5 ) / ( window_width - 1 ) ) + 0.5 ) ) ; } index &= mask ; index = ( int ) ConstrainColormapIndex ( image , ( size_t ) index ) ; SetPixelIndex ( indexes + x , index ) ; pixel . red = 1U * image -> colormap [ index ] . red ; pixel . green = 1U * image -> colormap [ index ] . green ; pixel . blue = 1U * image -> colormap [ index ] . blue ; } else { if ( bytes_per_pixel == 1 ) { pixel . red = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . green = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . blue = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; } else { pixel . red = ReadDCMShort ( stream_info , image ) ; pixel . green = ReadDCMShort ( stream_info , image ) ; pixel . blue = ReadDCMShort ( stream_info , image ) ; } pixel . red &= mask ; pixel . green &= mask ; pixel . blue &= mask ; if ( scale != ( Quantum * ) NULL ) { pixel . red = scale [ pixel . red ] ; pixel . green = scale [ pixel . green ] ; pixel . blue = scale [ pixel . blue ] ; } } SetPixelRed ( q , pixel . red ) ; SetPixelGreen ( q , pixel . green ) ; SetPixelBlue ( q , pixel . blue ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> segment_count > 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( samples_per_pixel == 1 ) { int pixel_value ; if ( bytes_per_pixel == 1 ) pixel_value = polarity != MagickFalse ? ( ( int ) max_value - ReadDCMByte ( stream_info , image ) ) : ReadDCMByte ( stream_info , image ) ; else if ( ( bits_allocated != 12 ) || ( significant_bits != 12 ) ) { pixel_value = ( int ) ( polarity != MagickFalse ? ( max_value - ReadDCMShort ( stream_info , image ) ) : ReadDCMShort ( stream_info , image ) ) ; if ( signed_data == 1 ) pixel_value = ( ( signed short ) pixel_value ) ; } else { if ( ( i & 0x01 ) != 0 ) pixel_value = ( ReadDCMByte ( stream_info , image ) << 8 ) | byte ; else { pixel_value = ( int ) ReadDCMShort ( stream_info , image ) ; byte = ( int ) ( pixel_value & 0x0f ) ; pixel_value >>= 4 ; } i ++ ; } index = pixel_value ; if ( window_width == 0 ) { if ( signed_data == 1 ) index = pixel_value - 32767 ; } else { ssize_t window_max , window_min ; window_min = ( ssize_t ) ceil ( ( double ) window_center - ( window_width - 1.0 ) / 2.0 - 0.5 ) ; window_max = ( ssize_t ) floor ( ( double ) window_center + ( window_width - 1.0 ) / 2.0 + 0.5 ) ; if ( ( ssize_t ) pixel_value <= window_min ) index = 0 ; else if ( ( ssize_t ) pixel_value > window_max ) index = ( int ) max_value ; else index = ( int ) ( max_value * ( ( ( pixel_value - window_center - 0.5 ) / ( window_width - 1 ) ) + 0.5 ) ) ; } index &= mask ; index = ( int ) ConstrainColormapIndex ( image , ( size_t ) index ) ; SetPixelIndex ( indexes + x , ( ( ( size_t ) GetPixelIndex ( indexes + x ) ) | ( ( ( size_t ) index ) << 8 ) ) ) ; pixel . red = 1U * image -> colormap [ index ] . red ; pixel . green = 1U * image -> colormap [ index ] . green ; pixel . blue = 1U * image -> colormap [ index ] . blue ; } else { if ( bytes_per_pixel == 1 ) { pixel . red = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . green = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . blue = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; } else { pixel . red = ReadDCMShort ( stream_info , image ) ; pixel . green = ReadDCMShort ( stream_info , image ) ; pixel . blue = ReadDCMShort ( stream_info , image ) ; } pixel . red &= mask ; pixel . green &= mask ; pixel . blue &= mask ; if ( scale != ( Quantum * ) NULL ) { pixel . red = scale [ pixel . red ] ; pixel . green = scale [ pixel . green ] ; pixel . blue = scale [ pixel . blue ] ; } } SetPixelRed ( q , ( ( ( size_t ) GetPixelRed ( q ) ) | ( ( ( size_t ) pixel . red ) << 8 ) ) ) ; SetPixelGreen ( q , ( ( ( size_t ) GetPixelGreen ( q ) ) | ( ( ( size_t ) pixel . green ) << 8 ) ) ) ; SetPixelBlue ( q , ( ( ( size_t ) GetPixelBlue ( q ) ) | ( ( ( size_t ) pixel . blue ) << 8 ) ) ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( IsGrayImage ( image , exception ) != MagickFalse ) ( void ) SetImageColorspace ( image , GRAYColorspace ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( number_scenes - 1 ) ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( scale != ( Quantum * ) NULL ) scale = ( Quantum * ) RelinquishMagickMemory ( scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = depth ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vpx_img_write ( const vpx_image_t * img , FILE * file ) { int plane ; for ( plane = 0 ; plane < 3 ; ++ plane ) { const unsigned char * buf = img -> planes [ plane ] ; const int stride = img -> stride [ plane ] ; <S2SV_StartBug> const int w = vpx_img_plane_width ( img , plane ) ; <S2SV_EndBug> const int h = vpx_img_plane_height ( img , plane ) ; int y ; for ( y = 0 ; y < h ; ++ y ) { fwrite ( buf , 1 , w , file ) ; buf += stride ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , plane ) * ( ( img -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? 2 : 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4621\n\n```\nCWE-835 inline void update_rq_clock ( struct rq * rq ) <S2SV_StartBug> { <S2SV_EndBug> if ( ! rq -> skip_clock_update ) { int cpu = cpu_of ( rq ) ; <S2SV_StartBug> u64 irq_time ; <S2SV_EndBug> rq -> clock = sched_clock_cpu ( cpu ) ; irq_time = irq_time_cpu ( cpu ) ; if ( rq -> clock - irq_time > rq -> clock_task ) rq -> clock_task = rq -> clock - irq_time ; sched_irq_time_avg_update ( rq , irq_time ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rq ) <S2SV_ModEnd> { int cpu <S2SV_ModStart> ; u64 irq_time ; if ( rq -> skip_clock_update ) return <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_write_message_fields ( wStream * s , NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( fields -> MaxLen < 1 ) fields -> MaxLen = fields -> Len ; Stream_Write_UINT16 ( s , fields -> Len ) ; Stream_Write_UINT16 ( s , fields -> MaxLen ) ; Stream_Write_UINT32 ( s , fields -> BufferOffset ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4387\n\n```\nCWE-119 static inline int ip6_ufo_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int hh_len , int fragheaderlen , int transhdrlen , int mtu , unsigned int flags , struct rt6_info * rt ) { struct sk_buff * skb ; int err ; if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) { <S2SV_StartBug> skb = sock_alloc_send_skb ( sk , <S2SV_EndBug> hh_len + fragheaderlen + transhdrlen + 20 , ( flags & MSG_DONTWAIT ) , & err ) ; if ( skb == NULL ) return err ; skb_reserve ( skb , hh_len ) ; skb_put ( skb , fragheaderlen + transhdrlen ) ; skb_reset_network_header ( skb ) ; skb -> transport_header = skb -> network_header + fragheaderlen ; skb -> protocol = htons ( ETH_P_IPV6 ) ; skb -> ip_summed = CHECKSUM_PARTIAL ; <S2SV_StartBug> skb -> csum = 0 ; <S2SV_EndBug> } err = skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) ; if ( ! err ) { struct frag_hdr fhdr ; skb_shinfo ( skb ) -> gso_size = ( mtu - fragheaderlen - sizeof ( struct frag_hdr ) ) & ~ 7 ; skb_shinfo ( skb ) -> gso_type = SKB_GSO_UDP ; ipv6_select_ident ( & fhdr , rt ) ; skb_shinfo ( skb ) -> ip6_frag_id = fhdr . identification ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } kfree_skb ( skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { struct frag_hdr fhdr ; <S2SV_ModStart> csum = 0 <S2SV_ModEnd> ; skb_shinfo ( <S2SV_ModStart> skb ) ; } return skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 int vis_emul ( struct pt_regs * regs , unsigned int insn ) { unsigned long pc = regs -> tpc ; unsigned int opf ; BUG_ON ( regs -> tstate & TSTATE_PRIV ) ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , 0 ) ; <S2SV_EndBug> if ( test_thread_flag ( TIF_32BIT ) ) pc = ( u32 ) pc ; if ( get_user ( insn , ( u32 __user * ) pc ) ) return - EFAULT ; save_and_clear_fpu ( ) ; opf = ( insn & VIS_OPF_MASK ) >> VIS_OPF_SHIFT ; switch ( opf ) { default : return - EINVAL ; case FPACK16_OPF : case FPACK32_OPF : case FPACKFIX_OPF : case FEXPAND_OPF : case FPMERGE_OPF : pformat ( regs , insn , opf ) ; break ; case FMUL8x16_OPF : case FMUL8x16AU_OPF : case FMUL8x16AL_OPF : case FMUL8SUx16_OPF : case FMUL8ULx16_OPF : case FMULD8SUx16_OPF : case FMULD8ULx16_OPF : pmul ( regs , insn , opf ) ; break ; case FCMPGT16_OPF : case FCMPGT32_OPF : case FCMPLE16_OPF : case FCMPLE32_OPF : case FCMPNE16_OPF : case FCMPNE32_OPF : case FCMPEQ16_OPF : case FCMPEQ32_OPF : pcmp ( regs , insn , opf ) ; break ; case EDGE8_OPF : case EDGE8N_OPF : case EDGE8L_OPF : case EDGE8LN_OPF : case EDGE16_OPF : case EDGE16N_OPF : case EDGE16L_OPF : case EDGE16LN_OPF : case EDGE32_OPF : case EDGE32N_OPF : case EDGE32L_OPF : case EDGE32LN_OPF : edge ( regs , insn , opf ) ; break ; case PDIST_OPF : pdist ( regs , insn ) ; break ; case ARRAY8_OPF : case ARRAY16_OPF : case ARRAY32_OPF : array ( regs , insn , opf ) ; break ; case BMASK_OPF : bmask ( regs , insn ) ; break ; case BSHUFFLE_OPF : bshuffle ( regs , insn ) ; break ; } regs -> tpc = regs -> tnpc ; regs -> tnpc += 4 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5770\n\n```\nCWE-190 SPL_METHOD ( SplFileObject , fread ) { spl_filesystem_object * intern = ( spl_filesystem_object * ) zend_object_store_get_object ( getThis ( ) TSRMLS_CC ) ; long length = 0 ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"l\" , & length ) == FAILURE ) { return ; } if ( length <= 0 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Length<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\" ) ; RETURN_FALSE ; } <S2SV_StartBug> Z_STRVAL_P ( return_value ) = emalloc ( length + 1 ) ; <S2SV_EndBug> Z_STRLEN_P ( return_value ) = php_stream_read ( intern -> u . file . stream , Z_STRVAL_P ( return_value ) , length ) ; Z_STRVAL_P ( return_value ) [ Z_STRLEN_P ( return_value ) ] = 0 ; Z_TYPE_P ( return_value ) = IS_STRING ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RETURN_FALSE ; } if ( length > INT_MAX ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Length<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>no<S2SV_blank>more<S2SV_blank>than<S2SV_blank>%d\" , INT_MAX ) ; RETURN_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 static void init_once ( void * foo ) { struct ext4_inode_info * ei = ( struct ext4_inode_info * ) foo ; INIT_LIST_HEAD ( & ei -> i_orphan ) ; init_rwsem ( & ei -> xattr_sem ) ; init_rwsem ( & ei -> i_data_sem ) ; <S2SV_StartBug> inode_init_once ( & ei -> vfs_inode ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i_data_sem ) ; init_rwsem ( & ei -> i_mmap_sem ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int load_segment_descriptor ( struct x86_emulate_ctxt * ctxt , u16 selector , int seg ) { u8 cpl = ctxt -> ops -> cpl ( ctxt ) ; <S2SV_StartBug> return __load_segment_descriptor ( ctxt , selector , seg , cpl , false ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpl , false , NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-119 static char * rfc2047_decode_word ( const char * s , size_t len , enum ContentEncoding enc ) { const char * it = s ; const char * end = s + len ; if ( enc == ENCQUOTEDPRINTABLE ) { struct Buffer buf = { 0 } ; for ( ; it < end ; ++ it ) { if ( * it == '_' ) { mutt_buffer_addch ( & buf , '<S2SV_blank>' ) ; } else if ( ( * it == '=' ) && ( ! ( it [ 1 ] & ~ 127 ) && hexval ( it [ 1 ] ) != - 1 ) && ( ! ( it [ 2 ] & ~ 127 ) && hexval ( it [ 2 ] ) != - 1 ) ) { mutt_buffer_addch ( & buf , ( hexval ( it [ 1 ] ) << 4 ) | hexval ( it [ 2 ] ) ) ; it += 2 ; } else { mutt_buffer_addch ( & buf , * it ) ; } } mutt_buffer_addch ( & buf , '\\\\0' ) ; return buf . data ; } else if ( enc == ENCBASE64 ) { <S2SV_StartBug> char * out = mutt_mem_malloc ( 3 * len / 4 + 1 ) ; <S2SV_EndBug> <S2SV_StartBug> int dlen = mutt_b64_decode ( out , it ) ; <S2SV_EndBug> if ( dlen == - 1 ) { FREE ( & out ) ; return NULL ; } out [ dlen ] = '\\\\0' ; return out ; } assert ( 0 ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ENCBASE64 ) { const int olen = <S2SV_ModEnd> 3 * len <S2SV_ModStart> 4 + 1 ; char * out = mutt_mem_malloc ( olen <S2SV_ModStart> out , it , olen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void open_output_file ( struct stream_state * stream , <S2SV_StartBug> struct VpxEncoderConfig * global ) { <S2SV_EndBug> const char * fn = stream -> config . out_fn ; const struct vpx_codec_enc_cfg * const cfg = & stream -> config . cfg ; if ( cfg -> g_pass == VPX_RC_FIRST_PASS ) return ; stream -> file = strcmp ( fn , \"-\" ) ? fopen ( fn , \"wb\" ) : set_binary_mode ( stdout ) ; if ( ! stream -> file ) fatal ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>output<S2SV_blank>file\" ) ; if ( stream -> config . write_webm && fseek ( stream -> file , 0 , SEEK_CUR ) ) fatal ( \"WebM<S2SV_blank>output<S2SV_blank>to<S2SV_blank>pipes<S2SV_blank>not<S2SV_blank>supported.\" ) ; # if CONFIG_WEBM_IO if ( stream -> config . write_webm ) { stream -> ebml . stream = stream -> file ; write_webm_file_header ( & stream -> ebml , cfg , & global -> framerate , stream -> config . stereo_fmt , <S2SV_StartBug> global -> codec -> fourcc ) ; <S2SV_EndBug> } # endif if ( ! stream -> config . write_webm ) { ivf_write_file_header ( stream -> file , cfg , global -> codec -> fourcc , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VpxEncoderConfig * global , const struct VpxRational * pixel_aspect_ratio <S2SV_ModStart> codec -> fourcc , pixel_aspect_ratio\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20961\n\n```\nCWE-415 static int f_midi_set_alt ( struct usb_function * f , unsigned intf , unsigned alt ) { struct f_midi * midi = func_to_midi ( f ) ; unsigned i ; int err ; if ( intf != midi -> ms_id ) return 0 ; err = f_midi_start_ep ( midi , f , midi -> in_ep ) ; if ( err ) return err ; err = f_midi_start_ep ( midi , f , midi -> out_ep ) ; if ( err ) return err ; while ( kfifo_avail ( & midi -> in_req_fifo ) ) { struct usb_request * req = midi_alloc_ep_req ( midi -> in_ep , midi -> buflen ) ; if ( req == NULL ) return - ENOMEM ; req -> length = 0 ; req -> complete = f_midi_complete ; kfifo_put ( & midi -> in_req_fifo , req ) ; } for ( i = 0 ; i < midi -> qlen && err == 0 ; i ++ ) { struct usb_request * req = midi_alloc_ep_req ( midi -> out_ep , midi -> buflen ) ; if ( req == NULL ) return - ENOMEM ; req -> complete = f_midi_complete ; err = usb_ep_queue ( midi -> out_ep , req , GFP_ATOMIC ) ; if ( err ) { ERROR ( midi , \"%s:<S2SV_blank>couldn\\'t<S2SV_blank>enqueue<S2SV_blank>request:<S2SV_blank>%d\\\\n\" , midi -> out_ep -> name , err ) ; <S2SV_StartBug> free_ep_req ( midi -> out_ep , req ) ; <S2SV_EndBug> return err ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ) ; if ( req -> buf != NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10661\n\n```\nCWE-416 static void timerfd_remove_cancel ( struct timerfd_ctx * ctx ) { <S2SV_StartBug> if ( ctx -> might_cancel ) { <S2SV_EndBug> ctx -> might_cancel = false ; <S2SV_StartBug> spin_lock ( & cancel_lock ) ; <S2SV_EndBug> <S2SV_StartBug> list_del_rcu ( & ctx -> clist ) ; <S2SV_EndBug> <S2SV_StartBug> spin_unlock ( & cancel_lock ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx ) { <S2SV_ModEnd> spin_lock ( & <S2SV_ModStart> spin_lock ( & ctx -> <S2SV_ModStart> cancel_lock ) ; __timerfd_remove_cancel ( ctx <S2SV_ModEnd> ) ; spin_unlock <S2SV_ModStart> spin_unlock ( & ctx -> <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12154\n\n```\nCWE-000 static int prepare_vmcs02 ( struct kvm_vcpu * vcpu , struct vmcs12 * vmcs12 , bool from_vmentry , u32 * entry_failure_code ) { struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; u32 exec_control , vmcs12_exec_ctrl ; vmcs_write16 ( GUEST_ES_SELECTOR , vmcs12 -> guest_es_selector ) ; vmcs_write16 ( GUEST_CS_SELECTOR , vmcs12 -> guest_cs_selector ) ; vmcs_write16 ( GUEST_SS_SELECTOR , vmcs12 -> guest_ss_selector ) ; vmcs_write16 ( GUEST_DS_SELECTOR , vmcs12 -> guest_ds_selector ) ; vmcs_write16 ( GUEST_FS_SELECTOR , vmcs12 -> guest_fs_selector ) ; vmcs_write16 ( GUEST_GS_SELECTOR , vmcs12 -> guest_gs_selector ) ; vmcs_write16 ( GUEST_LDTR_SELECTOR , vmcs12 -> guest_ldtr_selector ) ; vmcs_write16 ( GUEST_TR_SELECTOR , vmcs12 -> guest_tr_selector ) ; vmcs_write32 ( GUEST_ES_LIMIT , vmcs12 -> guest_es_limit ) ; vmcs_write32 ( GUEST_CS_LIMIT , vmcs12 -> guest_cs_limit ) ; vmcs_write32 ( GUEST_SS_LIMIT , vmcs12 -> guest_ss_limit ) ; vmcs_write32 ( GUEST_DS_LIMIT , vmcs12 -> guest_ds_limit ) ; vmcs_write32 ( GUEST_FS_LIMIT , vmcs12 -> guest_fs_limit ) ; vmcs_write32 ( GUEST_GS_LIMIT , vmcs12 -> guest_gs_limit ) ; vmcs_write32 ( GUEST_LDTR_LIMIT , vmcs12 -> guest_ldtr_limit ) ; vmcs_write32 ( GUEST_TR_LIMIT , vmcs12 -> guest_tr_limit ) ; vmcs_write32 ( GUEST_GDTR_LIMIT , vmcs12 -> guest_gdtr_limit ) ; vmcs_write32 ( GUEST_IDTR_LIMIT , vmcs12 -> guest_idtr_limit ) ; vmcs_write32 ( GUEST_ES_AR_BYTES , vmcs12 -> guest_es_ar_bytes ) ; vmcs_write32 ( GUEST_CS_AR_BYTES , vmcs12 -> guest_cs_ar_bytes ) ; vmcs_write32 ( GUEST_SS_AR_BYTES , vmcs12 -> guest_ss_ar_bytes ) ; vmcs_write32 ( GUEST_DS_AR_BYTES , vmcs12 -> guest_ds_ar_bytes ) ; vmcs_write32 ( GUEST_FS_AR_BYTES , vmcs12 -> guest_fs_ar_bytes ) ; vmcs_write32 ( GUEST_GS_AR_BYTES , vmcs12 -> guest_gs_ar_bytes ) ; vmcs_write32 ( GUEST_LDTR_AR_BYTES , vmcs12 -> guest_ldtr_ar_bytes ) ; vmcs_write32 ( GUEST_TR_AR_BYTES , vmcs12 -> guest_tr_ar_bytes ) ; vmcs_writel ( GUEST_ES_BASE , vmcs12 -> guest_es_base ) ; vmcs_writel ( GUEST_CS_BASE , vmcs12 -> guest_cs_base ) ; vmcs_writel ( GUEST_SS_BASE , vmcs12 -> guest_ss_base ) ; vmcs_writel ( GUEST_DS_BASE , vmcs12 -> guest_ds_base ) ; vmcs_writel ( GUEST_FS_BASE , vmcs12 -> guest_fs_base ) ; vmcs_writel ( GUEST_GS_BASE , vmcs12 -> guest_gs_base ) ; vmcs_writel ( GUEST_LDTR_BASE , vmcs12 -> guest_ldtr_base ) ; vmcs_writel ( GUEST_TR_BASE , vmcs12 -> guest_tr_base ) ; vmcs_writel ( GUEST_GDTR_BASE , vmcs12 -> guest_gdtr_base ) ; vmcs_writel ( GUEST_IDTR_BASE , vmcs12 -> guest_idtr_base ) ; if ( from_vmentry && ( vmcs12 -> vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS ) ) { kvm_set_dr ( vcpu , 7 , vmcs12 -> guest_dr7 ) ; vmcs_write64 ( GUEST_IA32_DEBUGCTL , vmcs12 -> guest_ia32_debugctl ) ; } else { kvm_set_dr ( vcpu , 7 , vcpu -> arch . dr7 ) ; vmcs_write64 ( GUEST_IA32_DEBUGCTL , vmx -> nested . vmcs01_debugctl ) ; } if ( from_vmentry ) { vmcs_write32 ( VM_ENTRY_INTR_INFO_FIELD , vmcs12 -> vm_entry_intr_info_field ) ; vmcs_write32 ( VM_ENTRY_EXCEPTION_ERROR_CODE , vmcs12 -> vm_entry_exception_error_code ) ; vmcs_write32 ( VM_ENTRY_INSTRUCTION_LEN , vmcs12 -> vm_entry_instruction_len ) ; vmcs_write32 ( GUEST_INTERRUPTIBILITY_INFO , vmcs12 -> guest_interruptibility_info ) ; vmx -> loaded_vmcs -> nmi_known_unmasked = ! ( vmcs12 -> guest_interruptibility_info & GUEST_INTR_STATE_NMI ) ; } else { vmcs_write32 ( VM_ENTRY_INTR_INFO_FIELD , 0 ) ; } vmcs_write32 ( GUEST_SYSENTER_CS , vmcs12 -> guest_sysenter_cs ) ; vmx_set_rflags ( vcpu , vmcs12 -> guest_rflags ) ; vmcs_writel ( GUEST_PENDING_DBG_EXCEPTIONS , vmcs12 -> guest_pending_dbg_exceptions ) ; vmcs_writel ( GUEST_SYSENTER_ESP , vmcs12 -> guest_sysenter_esp ) ; vmcs_writel ( GUEST_SYSENTER_EIP , vmcs12 -> guest_sysenter_eip ) ; if ( nested_cpu_has_xsaves ( vmcs12 ) ) vmcs_write64 ( XSS_EXIT_BITMAP , vmcs12 -> xss_exit_bitmap ) ; vmcs_write64 ( VMCS_LINK_POINTER , - 1ull ) ; exec_control = vmcs12 -> pin_based_vm_exec_control ; exec_control &= ~ PIN_BASED_VMX_PREEMPTION_TIMER ; exec_control |= vmcs_config . pin_based_exec_ctrl ; if ( vmx -> hv_deadline_tsc == - 1 ) exec_control &= ~ PIN_BASED_VMX_PREEMPTION_TIMER ; if ( nested_cpu_has_posted_intr ( vmcs12 ) ) { vmx -> nested . posted_intr_nv = vmcs12 -> posted_intr_nv ; vmx -> nested . pi_pending = false ; vmcs_write16 ( POSTED_INTR_NV , POSTED_INTR_NESTED_VECTOR ) ; } else { exec_control &= ~ PIN_BASED_POSTED_INTR ; } vmcs_write32 ( PIN_BASED_VM_EXEC_CONTROL , exec_control ) ; vmx -> nested . preemption_timer_expired = false ; if ( nested_cpu_has_preemption_timer ( vmcs12 ) ) vmx_start_preemption_timer ( vcpu ) ; vmcs_write32 ( PAGE_FAULT_ERROR_CODE_MASK , enable_ept ? vmcs12 -> page_fault_error_code_mask : 0 ) ; vmcs_write32 ( PAGE_FAULT_ERROR_CODE_MATCH , enable_ept ? vmcs12 -> page_fault_error_code_match : 0 ) ; if ( cpu_has_secondary_exec_ctrls ( ) ) { exec_control = vmx -> secondary_exec_control ; exec_control &= ~ ( SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | SECONDARY_EXEC_ENABLE_INVPCID | SECONDARY_EXEC_RDTSCP | SECONDARY_EXEC_XSAVES | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY | SECONDARY_EXEC_APIC_REGISTER_VIRT | SECONDARY_EXEC_ENABLE_VMFUNC ) ; if ( nested_cpu_has ( vmcs12 , CPU_BASED_ACTIVATE_SECONDARY_CONTROLS ) ) { vmcs12_exec_ctrl = vmcs12 -> secondary_vm_exec_control & ~ SECONDARY_EXEC_ENABLE_PML ; exec_control |= vmcs12_exec_ctrl ; } if ( exec_control & SECONDARY_EXEC_ENABLE_VMFUNC ) vmcs_write64 ( VM_FUNCTION_CONTROL , 0 ) ; if ( exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY ) { vmcs_write64 ( EOI_EXIT_BITMAP0 , vmcs12 -> eoi_exit_bitmap0 ) ; vmcs_write64 ( EOI_EXIT_BITMAP1 , vmcs12 -> eoi_exit_bitmap1 ) ; vmcs_write64 ( EOI_EXIT_BITMAP2 , vmcs12 -> eoi_exit_bitmap2 ) ; vmcs_write64 ( EOI_EXIT_BITMAP3 , vmcs12 -> eoi_exit_bitmap3 ) ; vmcs_write16 ( GUEST_INTR_STATUS , vmcs12 -> guest_intr_status ) ; } if ( exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES ) vmcs_write64 ( APIC_ACCESS_ADDR , - 1ull ) ; vmcs_write32 ( SECONDARY_VM_EXEC_CONTROL , exec_control ) ; } vmx_set_constant_host_state ( vmx ) ; vmcs_write32 ( VM_EXIT_MSR_STORE_COUNT , 0 ) ; vmcs_write32 ( VM_EXIT_MSR_LOAD_COUNT , vmx -> msr_autoload . nr ) ; vmcs_write64 ( VM_EXIT_MSR_LOAD_ADDR , __pa ( vmx -> msr_autoload . host ) ) ; vmcs_write32 ( VM_ENTRY_MSR_LOAD_COUNT , vmx -> msr_autoload . nr ) ; vmcs_write64 ( VM_ENTRY_MSR_LOAD_ADDR , __pa ( vmx -> msr_autoload . guest ) ) ; vmx -> host_rsp = 0 ; exec_control = vmx_exec_control ( vmx ) ; exec_control &= ~ CPU_BASED_VIRTUAL_INTR_PENDING ; exec_control &= ~ CPU_BASED_VIRTUAL_NMI_PENDING ; exec_control &= ~ CPU_BASED_TPR_SHADOW ; exec_control |= vmcs12 -> cpu_based_vm_exec_control ; if ( exec_control & CPU_BASED_TPR_SHADOW ) { vmcs_write64 ( VIRTUAL_APIC_PAGE_ADDR , - 1ull ) ; <S2SV_StartBug> vmcs_write32 ( TPR_THRESHOLD , vmcs12 -> tpr_threshold ) ; <S2SV_EndBug> } exec_control &= ~ CPU_BASED_USE_IO_BITMAPS ; exec_control |= CPU_BASED_UNCOND_IO_EXITING ; vmcs_write32 ( CPU_BASED_VM_EXEC_CONTROL , exec_control ) ; update_exception_bitmap ( vcpu ) ; vcpu -> arch . cr0_guest_owned_bits &= ~ vmcs12 -> cr0_guest_host_mask ; vmcs_writel ( CR0_GUEST_HOST_MASK , ~ vcpu -> arch . cr0_guest_owned_bits ) ; vmcs_write32 ( VM_EXIT_CONTROLS , vmcs_config . vmexit_ctrl ) ; vm_entry_controls_init ( vmx , ( vmcs12 -> vm_entry_controls & ~ VM_ENTRY_LOAD_IA32_EFER & ~ VM_ENTRY_IA32E_MODE ) | ( vmcs_config . vmentry_ctrl & ~ VM_ENTRY_IA32E_MODE ) ) ; if ( from_vmentry && ( vmcs12 -> vm_entry_controls & VM_ENTRY_LOAD_IA32_PAT ) ) { vmcs_write64 ( GUEST_IA32_PAT , vmcs12 -> guest_ia32_pat ) ; vcpu -> arch . pat = vmcs12 -> guest_ia32_pat ; } else if ( vmcs_config . vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT ) { vmcs_write64 ( GUEST_IA32_PAT , vmx -> vcpu . arch . pat ) ; } set_cr4_guest_host_mask ( vmx ) ; if ( from_vmentry && vmcs12 -> vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS ) vmcs_write64 ( GUEST_BNDCFGS , vmcs12 -> guest_bndcfgs ) ; if ( vmcs12 -> cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING ) vmcs_write64 ( TSC_OFFSET , vcpu -> arch . tsc_offset + vmcs12 -> tsc_offset ) ; else vmcs_write64 ( TSC_OFFSET , vcpu -> arch . tsc_offset ) ; if ( kvm_has_tsc_control ) decache_tsc_multiplier ( vmx ) ; if ( enable_vpid ) { if ( nested_cpu_has_vpid ( vmcs12 ) && vmx -> nested . vpid02 ) { vmcs_write16 ( VIRTUAL_PROCESSOR_ID , vmx -> nested . vpid02 ) ; if ( vmcs12 -> virtual_processor_id != vmx -> nested . last_vpid ) { vmx -> nested . last_vpid = vmcs12 -> virtual_processor_id ; __vmx_flush_tlb ( vcpu , to_vmx ( vcpu ) -> nested . vpid02 ) ; } } else { vmcs_write16 ( VIRTUAL_PROCESSOR_ID , vmx -> vpid ) ; vmx_flush_tlb ( vcpu ) ; } } if ( enable_pml ) { ASSERT ( vmx -> pml_pg ) ; vmcs_write64 ( PML_ADDRESS , page_to_phys ( vmx -> pml_pg ) ) ; vmcs_write16 ( GUEST_PML_INDEX , PML_ENTITY_NUM - 1 ) ; } if ( nested_cpu_has_ept ( vmcs12 ) ) { if ( nested_ept_init_mmu_context ( vcpu ) ) { * entry_failure_code = ENTRY_FAIL_DEFAULT ; return 1 ; } } else if ( nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES ) ) { vmx_flush_tlb_ept_only ( vcpu ) ; } vmx_set_cr0 ( vcpu , vmcs12 -> guest_cr0 ) ; vmcs_writel ( CR0_READ_SHADOW , nested_read_cr0 ( vmcs12 ) ) ; vmx_set_cr4 ( vcpu , vmcs12 -> guest_cr4 ) ; vmcs_writel ( CR4_READ_SHADOW , nested_read_cr4 ( vmcs12 ) ) ; if ( from_vmentry && ( vmcs12 -> vm_entry_controls & VM_ENTRY_LOAD_IA32_EFER ) ) vcpu -> arch . efer = vmcs12 -> guest_ia32_efer ; else if ( vmcs12 -> vm_entry_controls & VM_ENTRY_IA32E_MODE ) vcpu -> arch . efer |= ( EFER_LMA | EFER_LME ) ; else vcpu -> arch . efer &= ~ ( EFER_LMA | EFER_LME ) ; vmx_set_efer ( vcpu , vcpu -> arch . efer ) ; if ( nested_vmx_load_cr3 ( vcpu , vmcs12 -> guest_cr3 , nested_cpu_has_ept ( vmcs12 ) , entry_failure_code ) ) return 1 ; if ( ! enable_ept ) vcpu -> arch . walk_mmu -> inject_page_fault = vmx_inject_page_fault_nested ; if ( enable_ept ) { vmcs_write64 ( GUEST_PDPTR0 , vmcs12 -> guest_pdptr0 ) ; vmcs_write64 ( GUEST_PDPTR1 , vmcs12 -> guest_pdptr1 ) ; vmcs_write64 ( GUEST_PDPTR2 , vmcs12 -> guest_pdptr2 ) ; vmcs_write64 ( GUEST_PDPTR3 , vmcs12 -> guest_pdptr3 ) ; } kvm_register_write ( vcpu , VCPU_REGS_RSP , vmcs12 -> guest_rsp ) ; kvm_register_write ( vcpu , VCPU_REGS_RIP , vmcs12 -> guest_rip ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tpr_threshold ) ; } else { # ifdef CONFIG_X86_64 exec_control |= CPU_BASED_CR8_LOAD_EXITING | CPU_BASED_CR8_STORE_EXITING ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void prob_diff_update ( const vp9_tree_index * tree , <S2SV_EndBug> <S2SV_StartBug> vp9_prob probs [ ] , <S2SV_EndBug> const unsigned int counts [ ] , <S2SV_StartBug> int n , vp9_writer * w ) { <S2SV_EndBug> int i ; unsigned int branch_ct [ 32 ] [ 2 ] ; assert ( n <= 32 ) ; vp9_tree_probs_from_distribution ( tree , branch_ct , counts ) ; for ( i = 0 ; i < n - 1 ; ++ i ) vp9_cond_prob_diff_update ( w , & probs [ i ] , branch_ct [ i ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prob_diff_update ( const vpx_tree_index <S2SV_ModEnd> * tree , <S2SV_ModStart> * tree , vpx_prob <S2SV_ModEnd> probs [ ] <S2SV_ModStart> int n , vpx_writer <S2SV_ModEnd> * w )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2545\n\n```\nCWE-362 void snd_timer_interrupt ( struct snd_timer * timer , unsigned long ticks_left ) { struct snd_timer_instance * ti , * ts , * tmp ; unsigned long resolution , ticks ; struct list_head * p , * ack_list_head ; unsigned long flags ; int use_tasklet = 0 ; if ( timer == NULL ) return ; spin_lock_irqsave ( & timer -> lock , flags ) ; if ( timer -> hw . c_resolution ) resolution = timer -> hw . c_resolution ( timer ) ; else resolution = timer -> hw . resolution ; list_for_each_entry_safe ( ti , tmp , & timer -> active_list_head , active_list ) { if ( ! ( ti -> flags & SNDRV_TIMER_IFLG_RUNNING ) ) continue ; ti -> pticks += ticks_left ; ti -> resolution = resolution ; if ( ti -> cticks < ticks_left ) ti -> cticks = 0 ; else ti -> cticks -= ticks_left ; if ( ti -> cticks ) continue ; if ( ti -> flags & SNDRV_TIMER_IFLG_AUTO ) { ti -> cticks = ti -> ticks ; } else { ti -> flags &= ~ SNDRV_TIMER_IFLG_RUNNING ; if ( -- timer -> running ) <S2SV_StartBug> list_del ( & ti -> active_list ) ; <S2SV_EndBug> } if ( ( timer -> hw . flags & SNDRV_TIMER_HW_TASKLET ) || ( ti -> flags & SNDRV_TIMER_IFLG_FAST ) ) ack_list_head = & timer -> ack_list_head ; else ack_list_head = & timer -> sack_list_head ; if ( list_empty ( & ti -> ack_list ) ) list_add_tail ( & ti -> ack_list , ack_list_head ) ; list_for_each_entry ( ts , & ti -> slave_active_head , active_list ) { ts -> pticks = ti -> pticks ; ts -> resolution = resolution ; if ( list_empty ( & ts -> ack_list ) ) list_add_tail ( & ts -> ack_list , ack_list_head ) ; } } if ( timer -> flags & SNDRV_TIMER_FLG_RESCHED ) snd_timer_reschedule ( timer , timer -> sticks ) ; if ( timer -> running ) { if ( timer -> hw . flags & SNDRV_TIMER_HW_STOP ) { timer -> hw . stop ( timer ) ; timer -> flags |= SNDRV_TIMER_FLG_CHANGE ; } if ( ! ( timer -> hw . flags & SNDRV_TIMER_HW_AUTO ) || ( timer -> flags & SNDRV_TIMER_FLG_CHANGE ) ) { timer -> flags &= ~ SNDRV_TIMER_FLG_CHANGE ; timer -> hw . start ( timer ) ; } } else { timer -> hw . stop ( timer ) ; } while ( ! list_empty ( & timer -> ack_list_head ) ) { p = timer -> ack_list_head . next ; ti = list_entry ( p , struct snd_timer_instance , ack_list ) ; list_del_init ( p ) ; ticks = ti -> pticks ; ti -> pticks = 0 ; ti -> flags |= SNDRV_TIMER_IFLG_CALLBACK ; spin_unlock ( & timer -> lock ) ; if ( ti -> callback ) ti -> callback ( ti , resolution , ticks ) ; spin_lock ( & timer -> lock ) ; ti -> flags &= ~ SNDRV_TIMER_IFLG_CALLBACK ; } use_tasklet = ! list_empty ( & timer -> sack_list_head ) ; spin_unlock_irqrestore ( & timer -> lock , flags ) ; if ( use_tasklet ) tasklet_schedule ( & timer -> task_queue ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> running ) list_del_init <S2SV_ModEnd> ( & ti\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3611\n\n```\nCWE-362 void __kvm_migrate_pit_timer ( struct kvm_vcpu * vcpu ) { struct kvm_pit * pit = vcpu -> kvm -> arch . vpit ; struct hrtimer * timer ; if ( ! kvm_vcpu_is_bsp ( vcpu ) || ! pit ) return ; timer = & pit -> pit_state . timer ; <S2SV_StartBug> if ( hrtimer_cancel ( timer ) ) <S2SV_EndBug> hrtimer_start_expires ( timer , HRTIMER_MODE_ABS ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . timer ; mutex_lock ( & pit -> pit_state . lock ) ; <S2SV_ModStart> HRTIMER_MODE_ABS ) ; mutex_unlock ( & pit -> pit_state . lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17498\n\n```\nCWE-190 int _libssh2_packet_add ( LIBSSH2_SESSION * session , unsigned char * data , size_t datalen , int macstate ) { int rc = 0 ; <S2SV_StartBug> char * message = NULL ; <S2SV_EndBug> <S2SV_StartBug> char * language = NULL ; <S2SV_EndBug> size_t message_len = 0 ; size_t language_len = 0 ; LIBSSH2_CHANNEL * channelp = NULL ; size_t data_head = 0 ; unsigned char msg = data [ 0 ] ; switch ( session -> packAdd_state ) { case libssh2_NB_state_idle : _libssh2_debug ( session , LIBSSH2_TRACE_TRANS , \"Packet<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>received,<S2SV_blank>length=%d\" , ( int ) msg , ( int ) datalen ) ; if ( ( macstate == LIBSSH2_MAC_INVALID ) && ( ! session -> macerror || LIBSSH2_MACERROR ( session , ( char * ) data , datalen ) ) ) { LIBSSH2_FREE ( session , data ) ; return _libssh2_error ( session , LIBSSH2_ERROR_INVALID_MAC , \"Invalid<S2SV_blank>MAC<S2SV_blank>received\" ) ; } session -> packAdd_state = libssh2_NB_state_allocated ; break ; case libssh2_NB_state_jump1 : goto libssh2_packet_add_jump_point1 ; case libssh2_NB_state_jump2 : goto libssh2_packet_add_jump_point2 ; case libssh2_NB_state_jump3 : goto libssh2_packet_add_jump_point3 ; case libssh2_NB_state_jump4 : goto libssh2_packet_add_jump_point4 ; case libssh2_NB_state_jump5 : goto libssh2_packet_add_jump_point5 ; default : break ; } if ( session -> packAdd_state == libssh2_NB_state_allocated ) { switch ( msg ) { case SSH_MSG_DISCONNECT : if ( datalen >= 5 ) { <S2SV_StartBug> size_t reason = _libssh2_ntohu32 ( data + 1 ) ; <S2SV_EndBug> if ( datalen >= 9 ) { message_len = _libssh2_ntohu32 ( data + 5 ) ; if ( message_len < datalen - 13 ) { <S2SV_StartBug> message = ( char * ) data + 9 ; <S2SV_EndBug> language_len = _libssh2_ntohu32 ( data + 9 + message_len ) ; <S2SV_StartBug> language = ( char * ) data + 9 + message_len + 4 ; <S2SV_EndBug> if ( language_len > ( datalen - 13 - message_len ) ) { language = message = NULL ; language_len = message_len = 0 ; } } else message_len = 0 ; } if ( session -> ssh_msg_disconnect ) { LIBSSH2_DISCONNECT ( session , reason , message , message_len , language , language_len ) ; } _libssh2_debug ( session , LIBSSH2_TRACE_TRANS , \"Disconnect(%d):<S2SV_blank>%s(%s)\" , reason , message , language ) ; } LIBSSH2_FREE ( session , data ) ; session -> socket_state = LIBSSH2_SOCKET_DISCONNECTED ; session -> packAdd_state = libssh2_NB_state_idle ; return _libssh2_error ( session , LIBSSH2_ERROR_SOCKET_DISCONNECT , \"socket<S2SV_blank>disconnect\" ) ; case SSH_MSG_IGNORE : if ( datalen >= 2 ) { if ( session -> ssh_msg_ignore ) { LIBSSH2_IGNORE ( session , ( char * ) data + 1 , datalen - 1 ) ; } } else if ( session -> ssh_msg_ignore ) { LIBSSH2_IGNORE ( session , \"\" , 0 ) ; } LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; case SSH_MSG_DEBUG : if ( datalen >= 2 ) { int always_display = data [ 1 ] ; if ( datalen >= 6 ) { <S2SV_StartBug> message_len = _libssh2_ntohu32 ( data + 2 ) ; <S2SV_EndBug> if ( message_len <= ( datalen - 10 ) ) { <S2SV_StartBug> message = ( char * ) data + 6 ; <S2SV_EndBug> language_len = _libssh2_ntohu32 ( data + 6 + message_len ) ; if ( language_len <= ( datalen - 10 - message_len ) ) <S2SV_StartBug> language = ( char * ) data + 10 + message_len ; <S2SV_EndBug> } } if ( session -> ssh_msg_debug ) { LIBSSH2_DEBUG ( session , always_display , message , message_len , language , language_len ) ; } } _libssh2_debug ( session , LIBSSH2_TRACE_TRANS , \"Debug<S2SV_blank>Packet:<S2SV_blank>%s\" , message ) ; LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; case SSH_MSG_GLOBAL_REQUEST : if ( datalen >= 5 ) { uint32_t len = 0 ; unsigned char want_reply = 0 ; len = _libssh2_ntohu32 ( data + 1 ) ; <S2SV_StartBug> if ( datalen >= ( 6 + len ) ) { <S2SV_EndBug> want_reply = data [ 5 + len ] ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"Received<S2SV_blank>global<S2SV_blank>request<S2SV_blank>type<S2SV_blank>%.*s<S2SV_blank>(wr<S2SV_blank>%X)\" , len , data + 5 , want_reply ) ; } if ( want_reply ) { static const unsigned char packet = SSH_MSG_REQUEST_FAILURE ; libssh2_packet_add_jump_point5 : session -> packAdd_state = libssh2_NB_state_jump5 ; rc = _libssh2_transport_send ( session , & packet , 1 , NULL , 0 ) ; if ( rc == LIBSSH2_ERROR_EAGAIN ) return rc ; } } LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; case SSH_MSG_CHANNEL_EXTENDED_DATA : data_head += 4 ; case SSH_MSG_CHANNEL_DATA : data_head += 9 ; if ( datalen >= data_head ) channelp = _libssh2_channel_locate ( session , _libssh2_ntohu32 ( data + 1 ) ) ; if ( ! channelp ) { _libssh2_error ( session , LIBSSH2_ERROR_CHANNEL_UNKNOWN , \"Packet<S2SV_blank>received<S2SV_blank>for<S2SV_blank>unknown<S2SV_blank>channel\" ) ; LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; } # ifdef LIBSSH2DEBUG { uint32_t stream_id = 0 ; if ( msg == SSH_MSG_CHANNEL_EXTENDED_DATA ) stream_id = _libssh2_ntohu32 ( data + 5 ) ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"%d<S2SV_blank>bytes<S2SV_blank>packet_add()<S2SV_blank>for<S2SV_blank>%lu/%lu/%lu\" , ( int ) ( datalen - data_head ) , channelp -> local . id , channelp -> remote . id , stream_id ) ; } # endif if ( ( channelp -> remote . extended_data_ignore_mode == LIBSSH2_CHANNEL_EXTENDED_DATA_IGNORE ) && ( msg == SSH_MSG_CHANNEL_EXTENDED_DATA ) ) { LIBSSH2_FREE ( session , data ) ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"Ignoring<S2SV_blank>extended<S2SV_blank>data<S2SV_blank>and<S2SV_blank>refunding<S2SV_blank>%d<S2SV_blank>bytes\" , ( int ) ( datalen - 13 ) ) ; if ( channelp -> read_avail + datalen - data_head >= channelp -> remote . window_size ) datalen = channelp -> remote . window_size - channelp -> read_avail + data_head ; channelp -> remote . window_size -= datalen - data_head ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"shrinking<S2SV_blank>window<S2SV_blank>size<S2SV_blank>by<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>to<S2SV_blank>%lu,<S2SV_blank>\" \"read_avail<S2SV_blank>%lu\" , datalen - data_head , channelp -> remote . window_size , channelp -> read_avail ) ; session -> packAdd_channelp = channelp ; libssh2_packet_add_jump_point1 : session -> packAdd_state = libssh2_NB_state_jump1 ; rc = _libssh2_channel_receive_window_adjust ( session -> packAdd_channelp , datalen - 13 , 1 , NULL ) ; if ( rc == LIBSSH2_ERROR_EAGAIN ) return rc ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; } if ( channelp -> remote . packet_size < ( datalen - data_head ) ) { _libssh2_error ( session , LIBSSH2_ERROR_CHANNEL_PACKET_EXCEEDED , \"Packet<S2SV_blank>contains<S2SV_blank>more<S2SV_blank>data<S2SV_blank>than<S2SV_blank>we<S2SV_blank>offered\" \"<S2SV_blank>to<S2SV_blank>receive,<S2SV_blank>truncating\" ) ; datalen = channelp -> remote . packet_size + data_head ; } if ( channelp -> remote . window_size <= channelp -> read_avail ) { _libssh2_error ( session , LIBSSH2_ERROR_CHANNEL_WINDOW_EXCEEDED , \"The<S2SV_blank>current<S2SV_blank>receive<S2SV_blank>window<S2SV_blank>is<S2SV_blank>full,\" \"<S2SV_blank>data<S2SV_blank>ignored\" ) ; LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; } channelp -> remote . eof = 0 ; if ( channelp -> read_avail + datalen - data_head > channelp -> remote . window_size ) { _libssh2_error ( session , LIBSSH2_ERROR_CHANNEL_WINDOW_EXCEEDED , \"Remote<S2SV_blank>sent<S2SV_blank>more<S2SV_blank>data<S2SV_blank>than<S2SV_blank>current<S2SV_blank>\" \"window<S2SV_blank>allows,<S2SV_blank>truncating\" ) ; datalen = channelp -> remote . window_size - channelp -> read_avail + data_head ; } channelp -> read_avail += datalen - data_head ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"increasing<S2SV_blank>read_avail<S2SV_blank>by<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>to<S2SV_blank>%lu/%lu\" , ( long ) ( datalen - data_head ) , ( long ) channelp -> read_avail , ( long ) channelp -> remote . window_size ) ; break ; case SSH_MSG_CHANNEL_EOF : if ( datalen >= 5 ) channelp = _libssh2_channel_locate ( session , _libssh2_ntohu32 ( data + 1 ) ) ; if ( ! channelp ) ; else { _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"EOF<S2SV_blank>received<S2SV_blank>for<S2SV_blank>channel<S2SV_blank>%lu/%lu\" , channelp -> local . id , channelp -> remote . id ) ; channelp -> remote . eof = 1 ; } LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; case SSH_MSG_CHANNEL_REQUEST : if ( datalen >= 9 ) { uint32_t channel = _libssh2_ntohu32 ( data + 1 ) ; uint32_t len = _libssh2_ntohu32 ( data + 5 ) ; unsigned char want_reply = 1 ; if ( ( len + 9 ) < datalen ) want_reply = data [ len + 9 ] ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"Channel<S2SV_blank>%d<S2SV_blank>received<S2SV_blank>request<S2SV_blank>type<S2SV_blank>%.*s<S2SV_blank>(wr<S2SV_blank>%X)\" , channel , len , data + 9 , want_reply ) ; if ( len == sizeof ( \"exit-status\" ) - 1 && ( sizeof ( \"exit-status\" ) - 1 + 9 ) <= datalen && ! memcmp ( \"exit-status\" , data + 9 , sizeof ( \"exit-status\" ) - 1 ) ) { if ( datalen >= 20 ) channelp = _libssh2_channel_locate ( session , channel ) ; if ( channelp && ( sizeof ( \"exit-status\" ) + 13 ) <= datalen ) { channelp -> exit_status = _libssh2_ntohu32 ( data + 9 + sizeof ( \"exit-status\" ) ) ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"Exit<S2SV_blank>status<S2SV_blank>%lu<S2SV_blank>received<S2SV_blank>for<S2SV_blank>\" \"channel<S2SV_blank>%lu/%lu\" , channelp -> exit_status , channelp -> local . id , channelp -> remote . id ) ; } } else if ( len == sizeof ( \"exit-signal\" ) - 1 && ( sizeof ( \"exit-signal\" ) - 1 + 9 ) <= datalen && ! memcmp ( \"exit-signal\" , data + 9 , sizeof ( \"exit-signal\" ) - 1 ) ) { if ( datalen >= 20 ) channelp = _libssh2_channel_locate ( session , channel ) ; if ( channelp && ( sizeof ( \"exit-signal\" ) + 13 ) <= datalen ) { uint32_t namelen = _libssh2_ntohu32 ( data + 9 + sizeof ( \"exit-signal\" ) ) ; if ( namelen <= UINT_MAX - 1 ) { channelp -> exit_signal = LIBSSH2_ALLOC ( session , namelen + 1 ) ; } else { channelp -> exit_signal = NULL ; } if ( ! channelp -> exit_signal ) rc = _libssh2_error ( session , LIBSSH2_ERROR_ALLOC , \"memory<S2SV_blank>for<S2SV_blank>signal<S2SV_blank>name\" ) ; else if ( ( sizeof ( \"exit-signal\" ) + 13 + namelen <= datalen ) ) { memcpy ( channelp -> exit_signal , data + 13 + sizeof ( \"exit-signal\" ) , namelen ) ; channelp -> exit_signal [ namelen ] = '\\\\0' ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"Exit<S2SV_blank>signal<S2SV_blank>%s<S2SV_blank>received<S2SV_blank>for<S2SV_blank>\" \"channel<S2SV_blank>%lu/%lu\" , channelp -> exit_signal , channelp -> local . id , channelp -> remote . id ) ; } } } if ( want_reply ) { unsigned char packet [ 5 ] ; libssh2_packet_add_jump_point4 : session -> packAdd_state = libssh2_NB_state_jump4 ; packet [ 0 ] = SSH_MSG_CHANNEL_FAILURE ; memcpy ( & packet [ 1 ] , data + 1 , 4 ) ; rc = _libssh2_transport_send ( session , packet , 5 , NULL , 0 ) ; if ( rc == LIBSSH2_ERROR_EAGAIN ) return rc ; } } LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return rc ; case SSH_MSG_CHANNEL_CLOSE : if ( datalen >= 5 ) channelp = _libssh2_channel_locate ( session , _libssh2_ntohu32 ( data + 1 ) ) ; if ( ! channelp ) { LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; } _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"Close<S2SV_blank>received<S2SV_blank>for<S2SV_blank>channel<S2SV_blank>%lu/%lu\" , channelp -> local . id , channelp -> remote . id ) ; channelp -> remote . close = 1 ; channelp -> remote . eof = 1 ; LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; case SSH_MSG_CHANNEL_OPEN : if ( datalen < 17 ) ; else if ( ( datalen >= ( sizeof ( \"forwarded-tcpip\" ) + 4 ) ) && ( ( sizeof ( \"forwarded-tcpip\" ) - 1 ) == _libssh2_ntohu32 ( data + 1 ) ) && ( memcmp ( data + 5 , \"forwarded-tcpip\" , sizeof ( \"forwarded-tcpip\" ) - 1 ) == 0 ) ) { memset ( & session -> packAdd_Qlstn_state , 0 , sizeof ( session -> packAdd_Qlstn_state ) ) ; libssh2_packet_add_jump_point2 : session -> packAdd_state = libssh2_NB_state_jump2 ; rc = packet_queue_listener ( session , data , datalen , & session -> packAdd_Qlstn_state ) ; } else if ( ( datalen >= ( sizeof ( \"x11\" ) + 4 ) ) && ( ( sizeof ( \"x11\" ) - 1 ) == _libssh2_ntohu32 ( data + 1 ) ) && ( memcmp ( data + 5 , \"x11\" , sizeof ( \"x11\" ) - 1 ) == 0 ) ) { memset ( & session -> packAdd_x11open_state , 0 , sizeof ( session -> packAdd_x11open_state ) ) ; libssh2_packet_add_jump_point3 : session -> packAdd_state = libssh2_NB_state_jump3 ; rc = packet_x11_open ( session , data , datalen , & session -> packAdd_x11open_state ) ; } if ( rc == LIBSSH2_ERROR_EAGAIN ) return rc ; LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return rc ; case SSH_MSG_CHANNEL_WINDOW_ADJUST : if ( datalen < 9 ) ; else { uint32_t bytestoadd = _libssh2_ntohu32 ( data + 5 ) ; channelp = _libssh2_channel_locate ( session , _libssh2_ntohu32 ( data + 1 ) ) ; if ( channelp ) { channelp -> local . window_size += bytestoadd ; _libssh2_debug ( session , LIBSSH2_TRACE_CONN , \"Window<S2SV_blank>adjust<S2SV_blank>for<S2SV_blank>channel<S2SV_blank>%lu/%lu,<S2SV_blank>\" \"adding<S2SV_blank>%lu<S2SV_blank>bytes,<S2SV_blank>new<S2SV_blank>window_size=%lu\" , channelp -> local . id , channelp -> remote . id , bytestoadd , channelp -> local . window_size ) ; } } LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; default : break ; } session -> packAdd_state = libssh2_NB_state_sent ; } if ( session -> packAdd_state == libssh2_NB_state_sent ) { LIBSSH2_PACKET * packetp = LIBSSH2_ALLOC ( session , sizeof ( LIBSSH2_PACKET ) ) ; if ( ! packetp ) { _libssh2_debug ( session , LIBSSH2_ERROR_ALLOC , \"memory<S2SV_blank>for<S2SV_blank>packet\" ) ; LIBSSH2_FREE ( session , data ) ; session -> packAdd_state = libssh2_NB_state_idle ; return LIBSSH2_ERROR_ALLOC ; } packetp -> data = data ; packetp -> data_len = datalen ; packetp -> data_head = data_head ; _libssh2_list_add ( & session -> packets , & packetp -> node ) ; session -> packAdd_state = libssh2_NB_state_sent1 ; } if ( ( msg == SSH_MSG_KEXINIT && ! ( session -> state & LIBSSH2_STATE_EXCHANGING_KEYS ) ) || ( session -> packAdd_state == libssh2_NB_state_sent2 ) ) { if ( session -> packAdd_state == libssh2_NB_state_sent1 ) { _libssh2_debug ( session , LIBSSH2_TRACE_TRANS , \"Renegotiating<S2SV_blank>Keys\" ) ; session -> packAdd_state = libssh2_NB_state_sent2 ; } session -> readPack_state = libssh2_NB_state_idle ; session -> packet . total_num = 0 ; session -> packAdd_state = libssh2_NB_state_idle ; session -> fullpacket_state = libssh2_NB_state_idle ; memset ( & session -> startup_key_state , 0 , sizeof ( key_exchange_state_t ) ) ; rc = _libssh2_kex_exchange ( session , 1 , & session -> startup_key_state ) ; if ( rc == LIBSSH2_ERROR_EAGAIN ) return rc ; } session -> packAdd_state = libssh2_NB_state_idle ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; unsigned <S2SV_ModStart> = NULL ; unsigned <S2SV_ModStart> 5 ) { uint32_t reason = 0 ; struct string_buf buf ; buf . data = ( unsigned <S2SV_ModEnd> char * ) <S2SV_ModStart> * ) data ; buf . dataptr = buf . data ; buf . len = datalen ; buf . dataptr ++ ; _libssh2_get_u32 ( & buf , & reason ) ; _libssh2_get_string ( & buf , & message , & message_len ) ; _libssh2_get_string ( & buf , & language , & language_len ) ; if ( session -> ssh_msg_disconnect ) { LIBSSH2_DISCONNECT ( session , reason , ( const <S2SV_ModEnd> char * ) <S2SV_ModStart> char * ) message , message_len , ( const char * ) language , <S2SV_ModEnd> language_len ) ; <S2SV_ModStart> 6 ) { struct string_buf buf ; buf . data = ( unsigned <S2SV_ModEnd> char * ) <S2SV_ModStart> * ) data ; buf . dataptr = buf . data ; buf . len = datalen ; buf . dataptr += 2 ; _libssh2_get_string ( & buf , & message , & message_len ) ; _libssh2_get_string ( & buf , & language , & language_len ) ; } if ( session -> ssh_msg_debug ) { LIBSSH2_DEBUG ( session , always_display , ( const <S2SV_ModEnd> char * ) <S2SV_ModStart> char * ) message , message_len , ( const char * ) <S2SV_ModEnd> language , language_len <S2SV_ModStart> ; if ( ( len <= ( UINT_MAX - 6 ) ) && ( <S2SV_ModStart> 6 + len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 char * Util_monitId ( char * idfile ) { <S2SV_StartBug> FILE * file = NULL ; <S2SV_EndBug> ASSERT ( idfile ) ; if ( ! File_exist ( idfile ) ) { <S2SV_StartBug> md5_context_t ctx ; <S2SV_EndBug> char buf [ STRLEN ] ; MD_T digest ; file = fopen ( idfile , \"w\" ) ; if ( ! file ) { LogError ( \"Error<S2SV_blank>opening<S2SV_blank>the<S2SV_blank>idfile<S2SV_blank>\\'%s\\'<S2SV_blank>--<S2SV_blank>%s\\\\n\" , idfile , STRERROR ) ; return NULL ; } <S2SV_StartBug> snprintf ( buf , STRLEN , \"%lu%d%lu\" , ( unsigned long ) Time_now ( ) , getpid ( ) , random ( ) ) ; <S2SV_EndBug> md5_init ( & ctx ) ; md5_append ( & ctx , ( const md5_byte_t * ) buf , STRLEN - 1 ) ; md5_finish ( & ctx , ( md5_byte_t * ) digest ) ; Util_digest2Bytes ( ( unsigned char * ) digest , 16 , Run . id ) ; <S2SV_StartBug> fprintf ( file , \"%s\" , Run . id ) ; <S2SV_EndBug> LogInfo ( \"<S2SV_blank>New<S2SV_blank>Monit<S2SV_blank>id:<S2SV_blank>%s\\\\n<S2SV_blank>Stored<S2SV_blank>in<S2SV_blank>\\'%s\\'\\\\n\" , Run . id , idfile ) ; } else { if ( ! File_isFile ( idfile ) ) { LogError ( \"idfile<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>regular<S2SV_blank>file\\\\n\" , idfile ) ; return NULL ; } if ( ( file = fopen ( idfile , \"r\" ) ) == ( FILE * ) NULL ) { LogError ( \"Error<S2SV_blank>opening<S2SV_blank>the<S2SV_blank>idfile<S2SV_blank>\\'%s\\'<S2SV_blank>--<S2SV_blank>%s\\\\n\" , idfile , STRERROR ) ; return NULL ; } if ( fscanf ( file , \"%64s\" , Run . id ) != 1 ) { LogError ( \"Error<S2SV_blank>reading<S2SV_blank>id<S2SV_blank>from<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , idfile ) ; if ( fclose ( file ) ) LogError ( \"Error<S2SV_blank>closing<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>--<S2SV_blank>%s\\\\n\" , idfile , STRERROR ) ; return NULL ; } } if ( fclose ( file ) ) LogError ( \"Error<S2SV_blank>closing<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>--<S2SV_blank>%s\\\\n\" , idfile , STRERROR ) ; return Run . id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> idfile ) { ASSERT ( idfile ) ; <S2SV_ModStart> file = NULL <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) { <S2SV_ModEnd> file = fopen <S2SV_ModStart> NULL ; } <S2SV_ModEnd> fprintf ( file <S2SV_ModStart> , \"%s\" , Util_getToken ( Run . id ) <S2SV_ModEnd> ) ; LogInfo\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void svc_log_reset ( SvcContext * svc_ctx ) { <S2SV_StartBug> SvcInternal * const si = ( SvcInternal * ) svc_ctx -> internal ; <S2SV_EndBug> si -> message_buffer [ 0 ] = '\\\\0' ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svc_ctx ) { SvcInternal_t <S2SV_ModEnd> * const si <S2SV_ModStart> si = ( SvcInternal_t <S2SV_ModEnd> * ) svc_ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_refining_search_sadx4 ( MACROBLOCK * x , BLOCK * b , BLOCKD * d , int_mv * ref_mv , int error_per_bit , int search_range , vp8_variance_fn_ptr_t * fn_ptr , int * mvcost [ 2 ] , int_mv * center_mv ) { MV neighbors [ 4 ] = { { - 1 , 0 } , { 0 , - 1 } , { 0 , 1 } , { 1 , 0 } } ; int i , j ; short this_row_offset , this_col_offset ; int what_stride = b -> src_stride ; int pre_stride = x -> e_mbd . pre . y_stride ; unsigned char * base_pre = x -> e_mbd . pre . y_buffer ; int in_what_stride = pre_stride ; unsigned char * what = ( * ( b -> base_src ) + b -> src ) ; unsigned char * best_address = ( unsigned char * ) ( base_pre + d -> offset + ( ref_mv -> as_mv . row * pre_stride ) + ref_mv -> as_mv . col ) ; unsigned char * check_here ; int_mv this_mv ; unsigned int bestsad ; unsigned int thissad ; int * mvsadcost [ 2 ] ; int_mv fcenter_mv ; mvsadcost [ 0 ] = x -> mvsadcost [ 0 ] ; mvsadcost [ 1 ] = x -> mvsadcost [ 1 ] ; fcenter_mv . as_mv . row = center_mv -> as_mv . row >> 3 ; fcenter_mv . as_mv . col = center_mv -> as_mv . col >> 3 ; bestsad = fn_ptr -> sdf ( what , what_stride , best_address , <S2SV_StartBug> in_what_stride , UINT_MAX ) <S2SV_EndBug> + mvsad_err_cost ( ref_mv , & fcenter_mv , mvsadcost , error_per_bit ) ; for ( i = 0 ; i < search_range ; i ++ ) { int best_site = - 1 ; int all_in = 1 ; all_in &= ( ( ref_mv -> as_mv . row - 1 ) > x -> mv_row_min ) ; all_in &= ( ( ref_mv -> as_mv . row + 1 ) < x -> mv_row_max ) ; all_in &= ( ( ref_mv -> as_mv . col - 1 ) > x -> mv_col_min ) ; all_in &= ( ( ref_mv -> as_mv . col + 1 ) < x -> mv_col_max ) ; if ( all_in ) { unsigned int sad_array [ 4 ] ; const unsigned char * block_offset [ 4 ] ; block_offset [ 0 ] = best_address - in_what_stride ; block_offset [ 1 ] = best_address - 1 ; block_offset [ 2 ] = best_address + 1 ; block_offset [ 3 ] = best_address + in_what_stride ; fn_ptr -> sdx4df ( what , what_stride , block_offset , in_what_stride , sad_array ) ; for ( j = 0 ; j < 4 ; j ++ ) { if ( sad_array [ j ] < bestsad ) { this_mv . as_mv . row = ref_mv -> as_mv . row + neighbors [ j ] . row ; this_mv . as_mv . col = ref_mv -> as_mv . col + neighbors [ j ] . col ; sad_array [ j ] += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , error_per_bit ) ; if ( sad_array [ j ] < bestsad ) { bestsad = sad_array [ j ] ; best_site = j ; } } } } else { for ( j = 0 ; j < 4 ; j ++ ) { this_row_offset = ref_mv -> as_mv . row + neighbors [ j ] . row ; this_col_offset = ref_mv -> as_mv . col + neighbors [ j ] . col ; if ( ( this_col_offset > x -> mv_col_min ) && ( this_col_offset < x -> mv_col_max ) && ( this_row_offset > x -> mv_row_min ) && ( this_row_offset < x -> mv_row_max ) ) { check_here = ( neighbors [ j ] . row ) * in_what_stride + neighbors [ j ] . col + best_address ; <S2SV_StartBug> thissad = fn_ptr -> sdf ( what , what_stride , check_here , in_what_stride , bestsad ) ; <S2SV_EndBug> if ( thissad < bestsad ) { this_mv . as_mv . row = this_row_offset ; this_mv . as_mv . col = this_col_offset ; thissad += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , error_per_bit ) ; if ( thissad < bestsad ) { bestsad = thissad ; best_site = j ; } } } } } if ( best_site == - 1 ) break ; else { ref_mv -> as_mv . row += neighbors [ best_site ] . row ; ref_mv -> as_mv . col += neighbors [ best_site ] . col ; best_address += ( neighbors [ best_site ] . row ) * in_what_stride + neighbors [ best_site ] . col ; } } this_mv . as_mv . row = ref_mv -> as_mv . row * 8 ; this_mv . as_mv . col = ref_mv -> as_mv . col * 8 ; return fn_ptr -> vf ( what , what_stride , best_address , in_what_stride , & thissad ) + mv_err_cost ( & this_mv , center_mv , mvcost , x -> errorperbit ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> best_address , in_what_stride <S2SV_ModEnd> ) + mvsad_err_cost <S2SV_ModStart> check_here , in_what_stride <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9710\n\n```\nCWE-362 <S2SV_StartBug> static struct btrfs_dir_item * btrfs_match_dir_item_name ( struct btrfs_root * root , <S2SV_EndBug> struct btrfs_path * path , const char * name , int name_len ) { struct btrfs_dir_item * dir_item ; unsigned long name_ptr ; u32 total_len ; u32 cur = 0 ; u32 this_len ; struct extent_buffer * leaf ; leaf = path -> nodes [ 0 ] ; dir_item = btrfs_item_ptr ( leaf , path -> slots [ 0 ] , struct btrfs_dir_item ) ; if ( verify_dir_item ( root , leaf , dir_item ) ) return NULL ; total_len = btrfs_item_size_nr ( leaf , path -> slots [ 0 ] ) ; while ( cur < total_len ) { this_len = sizeof ( * dir_item ) + btrfs_dir_name_len ( leaf , dir_item ) + btrfs_dir_data_len ( leaf , dir_item ) ; name_ptr = ( unsigned long ) ( dir_item + 1 ) ; if ( btrfs_dir_name_len ( leaf , dir_item ) == name_len && memcmp_extent_buffer ( leaf , name , name_ptr , name_len ) == 0 ) return dir_item ; cur += this_len ; dir_item = ( struct btrfs_dir_item * ) ( ( char * ) dir_item + this_len ) ; } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> struct btrfs_dir_item *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9620\n\n```\nCWE-399 protected struct magic_set * file_ms_alloc ( int flags ) { struct magic_set * ms ; size_t i , len ; if ( ( ms = CAST ( struct magic_set * , calloc ( ( size_t ) 1 , sizeof ( struct magic_set ) ) ) ) == NULL ) return NULL ; if ( magic_setflags ( ms , flags ) == - 1 ) { errno = EINVAL ; goto free ; } ms -> o . buf = ms -> o . pbuf = NULL ; len = ( ms -> c . len = 10 ) * sizeof ( * ms -> c . li ) ; if ( ( ms -> c . li = CAST ( struct level_info * , malloc ( len ) ) ) == NULL ) goto free ; ms -> event_flags = 0 ; ms -> error = - 1 ; for ( i = 0 ; i < MAGIC_SETS ; i ++ ) ms -> mlist [ i ] = NULL ; ms -> file = \"unknown\" ; ms -> line = 0 ; ms -> indir_max = FILE_INDIR_MAX ; ms -> name_max = FILE_NAME_MAX ; ms -> elf_shnum_max = FILE_ELF_SHNUM_MAX ; ms -> elf_phnum_max = FILE_ELF_PHNUM_MAX ; <S2SV_StartBug> return ms ; <S2SV_EndBug> free : free ( ms ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = FILE_ELF_PHNUM_MAX ; ms -> elf_notes_max = FILE_ELF_NOTES_MAX ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8071\n\n```\nCWE-404 static void cp2112_gpio_set ( struct gpio_chip * chip , unsigned offset , int value ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> int ret ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> buf [ 0 ] = CP2112_GPIO_SET ; buf [ 1 ] = value ? 0xff : 0 ; buf [ 2 ] = 1 << offset ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_SET , buf , CP2112_GPIO_SET_LENGTH , HID_FEATURE_REPORT , HID_REQ_SET_REPORT ) ; if ( ret < 0 ) hid_err ( hdev , \"error<S2SV_blank>setting<S2SV_blank>GPIO<S2SV_blank>values:<S2SV_blank>%d\\\\n\" , ret ) ; <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> in_out_buffer ; <S2SV_ModEnd> int ret ; <S2SV_ModStart> int ret ; mutex_lock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; buf <S2SV_ModStart> ret ) ; mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12899\n\n```\nCWE-125 void decnet_print ( netdissect_options * ndo , register const u_char * ap , register u_int length , register u_int caplen ) { register const union routehdr * rhp ; register int mflags ; int dst , src , hops ; u_int nsplen , pktlen ; const u_char * nspp ; if ( length < sizeof ( struct shorthdr ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } ND_TCHECK2 ( * ap , sizeof ( short ) ) ; pktlen = EXTRACT_LE_16BITS ( ap ) ; if ( pktlen < sizeof ( struct shorthdr ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } if ( pktlen > length ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } length = pktlen ; rhp = ( const union routehdr * ) & ( ap [ sizeof ( short ) ] ) ; ND_TCHECK ( rhp -> rh_short . sh_flags ) ; mflags = EXTRACT_LE_8BITS ( rhp -> rh_short . sh_flags ) ; if ( mflags & RMF_PAD ) { u_int padlen = mflags & RMF_PADMASK ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"[pad:%d]<S2SV_blank>\" , padlen ) ) ; if ( length < padlen + 2 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } ND_TCHECK2 ( ap [ sizeof ( short ) ] , padlen ) ; ap += padlen ; length -= padlen ; caplen -= padlen ; rhp = ( const union routehdr * ) & ( ap [ sizeof ( short ) ] ) ; <S2SV_StartBug> mflags = EXTRACT_LE_8BITS ( rhp -> rh_short . sh_flags ) ; <S2SV_EndBug> } if ( mflags & RMF_FVER ) { ND_PRINT ( ( ndo , \"future-version-decnet\" ) ) ; ND_DEFAULTPRINT ( ap , min ( length , caplen ) ) ; return ; } if ( mflags & RMF_CTLMSG ) { if ( ! print_decnet_ctlmsg ( ndo , rhp , length , caplen ) ) goto trunc ; return ; } switch ( mflags & RMF_MASK ) { case RMF_LONG : if ( length < sizeof ( struct longhdr ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } ND_TCHECK ( rhp -> rh_long ) ; dst = EXTRACT_LE_16BITS ( rhp -> rh_long . lg_dst . dne_remote . dne_nodeaddr ) ; src = EXTRACT_LE_16BITS ( rhp -> rh_long . lg_src . dne_remote . dne_nodeaddr ) ; hops = EXTRACT_LE_8BITS ( rhp -> rh_long . lg_visits ) ; nspp = & ( ap [ sizeof ( short ) + sizeof ( struct longhdr ) ] ) ; nsplen = length - sizeof ( struct longhdr ) ; break ; case RMF_SHORT : ND_TCHECK ( rhp -> rh_short ) ; dst = EXTRACT_LE_16BITS ( rhp -> rh_short . sh_dst ) ; src = EXTRACT_LE_16BITS ( rhp -> rh_short . sh_src ) ; hops = ( EXTRACT_LE_8BITS ( rhp -> rh_short . sh_visits ) & VIS_MASK ) + 1 ; nspp = & ( ap [ sizeof ( short ) + sizeof ( struct shorthdr ) ] ) ; nsplen = length - sizeof ( struct shorthdr ) ; break ; default : ND_PRINT ( ( ndo , \"unknown<S2SV_blank>message<S2SV_blank>flags<S2SV_blank>under<S2SV_blank>mask\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) ap , min ( length , caplen ) ) ; return ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s<S2SV_blank>%d<S2SV_blank>\" , dnaddr_string ( ndo , src ) , dnaddr_string ( ndo , dst ) , pktlen ) ) ; if ( ndo -> ndo_vflag ) { if ( mflags & RMF_RQR ) ND_PRINT ( ( ndo , \"RQR<S2SV_blank>\" ) ) ; if ( mflags & RMF_RTS ) ND_PRINT ( ( ndo , \"RTS<S2SV_blank>\" ) ) ; if ( mflags & RMF_IE ) ND_PRINT ( ( ndo , \"IE<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"%d<S2SV_blank>hops<S2SV_blank>\" , hops ) ) ; } if ( ! print_nsp ( ndo , nspp , nsplen ) ) goto trunc ; return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; ND_TCHECK ( rhp -> rh_short . sh_flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8126\n\n```\nCWE-119 voidpf # endif png_zalloc ( voidpf png_ptr , uInt items , uInt size ) { png_voidp ptr ; <S2SV_StartBug> png_structp p = ( png_structp ) png_ptr ; <S2SV_EndBug> <S2SV_StartBug> png_uint_32 save_flags = p -> flags ; <S2SV_EndBug> png_uint_32 num_bytes ; if ( png_ptr == NULL ) return ( NULL ) ; if ( items > PNG_UINT_32_MAX / size ) { png_warning ( p , \"Potential<S2SV_blank>overflow<S2SV_blank>in<S2SV_blank>png_zalloc()\" ) ; return ( NULL ) ; } num_bytes = ( png_uint_32 ) items * size ; p -> flags |= PNG_FLAG_MALLOC_NULL_MEM_OK ; ptr = ( png_voidp ) png_malloc ( ( png_structp ) png_ptr , num_bytes ) ; p -> flags = save_flags ; # if defined ( PNG_1_0_X ) && ! defined ( PNG_NO_ZALLOC_ZERO ) if ( ptr == NULL ) return ( ( voidpf ) ptr ) ; if ( num_bytes > ( png_uint_32 ) 0x8000L ) { png_memset ( ptr , 0 , ( png_size_t ) 0x8000L ) ; png_memset ( ( png_bytep ) ptr + ( png_size_t ) 0x8000L , 0 , ( png_size_t ) ( num_bytes - ( png_uint_32 ) 0x8000L ) ) ; } else { png_memset ( ptr , 0 , ( png_size_t ) num_bytes ) ; } # endif return ( ( voidpf ) ptr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; png_structp p ; png_uint_32 save_flags ; png_uint_32 num_bytes ; if ( png_ptr == NULL ) return ( NULL ) ; p <S2SV_ModStart> ) png_ptr ; <S2SV_ModEnd> save_flags = p <S2SV_ModStart> p -> flags <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void output_stats ( const VP8_COMP * cpi , struct vpx_codec_pkt_list * pktlist , FIRSTPASS_STATS * stats ) { struct vpx_codec_cx_pkt pkt ; <S2SV_StartBug> pkt . kind = VPX_CODEC_STATS_PKT ; <S2SV_EndBug> pkt . data . twopass_stats . buf = stats ; pkt . data . twopass_stats . sz = sizeof ( FIRSTPASS_STATS ) ; vpx_codec_pkt_list_add ( pktlist , & pkt ) ; # if OUTPUT_FPF { FILE * fpfile ; fpfile = fopen ( \"firstpass.stt\" , \"a\" ) ; fprintf ( fpfile , \"%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f\" \"<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f\" \"<S2SV_blank>%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.4f\\\\n\" , stats -> frame , stats -> intra_error , stats -> coded_error , stats -> ssim_weighted_pred_err , stats -> pcnt_inter , stats -> pcnt_motion , stats -> pcnt_second_ref , stats -> pcnt_neutral , stats -> MVr , stats -> mvr_abs , stats -> MVc , stats -> mvc_abs , stats -> MVrv , stats -> MVcv , stats -> mv_in_out_count , stats -> new_mv_count , stats -> count , stats -> duration ) ; fclose ( fpfile ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_cx_pkt pkt ; ( void ) cpi ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10929\n\n```\nCWE-119 grub_err_t grub_disk_read ( grub_disk_t disk , grub_disk_addr_t sector , grub_off_t offset , grub_size_t size , void * buf ) { char * tmp_buf ; unsigned real_offset ; if ( grub_disk_adjust_range ( disk , & sector , & offset , size ) != GRUB_ERR_NONE ) { grub_error_push ( ) ; grub_dprintf ( \"disk\" , \"Read<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range:<S2SV_blank>sector<S2SV_blank>0x%llx<S2SV_blank>(%s).\\\\n\" , ( unsigned long long ) sector , grub_errmsg ) ; grub_error_pop ( ) ; return grub_errno ; } real_offset = offset ; tmp_buf = grub_malloc ( GRUB_DISK_SECTOR_SIZE << GRUB_DISK_CACHE_BITS ) ; if ( ! tmp_buf ) return grub_errno ; while ( size ) { char * data ; grub_disk_addr_t start_sector ; grub_size_t len ; grub_size_t pos ; start_sector = sector & ~ ( GRUB_DISK_CACHE_SIZE - 1 ) ; pos = ( sector - start_sector ) << GRUB_DISK_SECTOR_BITS ; len = ( ( GRUB_DISK_SECTOR_SIZE << GRUB_DISK_CACHE_BITS ) - pos - real_offset ) ; if ( len > size ) len = size ; data = grub_disk_cache_fetch ( disk -> dev -> id , disk -> id , start_sector ) ; if ( data ) { <S2SV_StartBug> if ( buf ) <S2SV_EndBug> <S2SV_StartBug> grub_memcpy ( buf , data + pos + real_offset , len ) ; <S2SV_EndBug> grub_disk_cache_unlock ( disk -> dev -> id , disk -> id , start_sector ) ; } else { if ( start_sector + GRUB_DISK_CACHE_SIZE > disk -> total_sectors || ( disk -> dev -> read ) ( disk , start_sector , GRUB_DISK_CACHE_SIZE , tmp_buf ) != GRUB_ERR_NONE ) { unsigned num ; char * p ; grub_errno = GRUB_ERR_NONE ; num = ( ( size + real_offset + GRUB_DISK_SECTOR_SIZE - 1 ) >> GRUB_DISK_SECTOR_BITS ) ; p = grub_realloc ( tmp_buf , num << GRUB_DISK_SECTOR_BITS ) ; if ( ! p ) goto finish ; tmp_buf = p ; if ( ( disk -> dev -> read ) ( disk , sector , num , tmp_buf ) ) { grub_error_push ( ) ; grub_dprintf ( \"disk\" , \"%s<S2SV_blank>read<S2SV_blank>failed\\\\n\" , disk -> name ) ; grub_error_pop ( ) ; goto finish ; } if ( buf ) grub_memcpy ( buf , tmp_buf + real_offset , size ) ; if ( disk -> read_hook ) while ( size ) { grub_size_t to_read ; to_read = size ; if ( real_offset + to_read > GRUB_DISK_SECTOR_SIZE ) to_read = GRUB_DISK_SECTOR_SIZE - real_offset ; ( disk -> read_hook ) ( sector , real_offset , to_read , disk -> closure ) ; if ( grub_errno != GRUB_ERR_NONE ) goto finish ; sector ++ ; size -= to_read ; real_offset = 0 ; } goto finish ; } if ( buf ) grub_memcpy ( buf , tmp_buf + pos + real_offset , len ) ; grub_disk_cache_store ( disk -> dev -> id , disk -> id , start_sector , tmp_buf ) ; } if ( disk -> read_hook ) { grub_disk_addr_t s = sector ; grub_size_t l = len ; while ( l ) { ( disk -> read_hook ) ( s , real_offset , ( ( l > GRUB_DISK_SECTOR_SIZE ) ? GRUB_DISK_SECTOR_SIZE : l ) , disk -> closure ) ; if ( l < GRUB_DISK_SECTOR_SIZE - real_offset ) break ; s ++ ; l -= GRUB_DISK_SECTOR_SIZE - real_offset ; real_offset = 0 ; } } sector = start_sector + GRUB_DISK_CACHE_SIZE ; if ( buf ) buf = ( char * ) buf + len ; size -= len ; real_offset = 0 ; } finish : grub_free ( tmp_buf ) ; return grub_errno ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( buf ) { if ( pos + real_offset + len >= size ) { grub_errno = GRUB_ERR_BAD_FS ; return grub_errno ; } <S2SV_ModStart> len ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int x25_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct x25_sock * x25 = x25_sk ( sk ) ; struct sockaddr_x25 * sx25 = ( struct sockaddr_x25 * ) msg -> msg_name ; size_t copied ; int qbit , header_len ; struct sk_buff * skb ; unsigned char * asmptr ; int rc = - ENOTCONN ; lock_sock ( sk ) ; if ( x25 -> neighbour == NULL ) goto out ; header_len = x25 -> neighbour -> extended ? X25_EXT_MIN_LEN : X25_STD_MIN_LEN ; if ( sk -> sk_state != TCP_ESTABLISHED ) goto out ; if ( flags & MSG_OOB ) { rc = - EINVAL ; if ( sock_flag ( sk , SOCK_URGINLINE ) || ! skb_peek ( & x25 -> interrupt_in_queue ) ) goto out ; skb = skb_dequeue ( & x25 -> interrupt_in_queue ) ; if ( ! pskb_may_pull ( skb , X25_STD_MIN_LEN ) ) goto out_free_dgram ; skb_pull ( skb , X25_STD_MIN_LEN ) ; if ( test_bit ( X25_Q_BIT_FLAG , & x25 -> flags ) ) { asmptr = skb_push ( skb , 1 ) ; * asmptr = 0x00 ; } msg -> msg_flags |= MSG_OOB ; } else { release_sock ( sk ) ; skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & rc ) ; lock_sock ( sk ) ; if ( ! skb ) goto out ; if ( ! pskb_may_pull ( skb , header_len ) ) goto out_free_dgram ; qbit = ( skb -> data [ 0 ] & X25_Q_BIT ) == X25_Q_BIT ; skb_pull ( skb , header_len ) ; if ( test_bit ( X25_Q_BIT_FLAG , & x25 -> flags ) ) { asmptr = skb_push ( skb , 1 ) ; * asmptr = qbit ; } } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } msg -> msg_flags |= MSG_EOR ; rc = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( rc ) goto out_free_dgram ; if ( sx25 ) { sx25 -> sx25_family = AF_X25 ; sx25 -> sx25_addr = x25 -> dest_addr ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> msg -> msg_namelen = sizeof ( struct sockaddr_x25 ) ; <S2SV_EndBug> x25_check_rbuf ( sk ) ; rc = copied ; out_free_dgram : skb_free_datagram ( sk , skb ) ; out : release_sock ( sk ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> dest_addr ; <S2SV_ModEnd> msg -> msg_namelen <S2SV_ModStart> = sizeof ( * sx25 ) ; } <S2SV_ModEnd> x25_check_rbuf ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static struct page * follow_pmd_mask ( struct vm_area_struct * vma , unsigned long address , pud_t * pudp , unsigned int flags , struct follow_page_context * ctx ) { pmd_t * pmd , pmdval ; spinlock_t * ptl ; struct page * page ; struct mm_struct * mm = vma -> vm_mm ; pmd = pmd_offset ( pudp , address ) ; pmdval = READ_ONCE ( * pmd ) ; if ( pmd_none ( pmdval ) ) return no_page_table ( vma , flags ) ; if ( pmd_huge ( pmdval ) && vma -> vm_flags & VM_HUGETLB ) { page = follow_huge_pmd ( mm , address , pmd , flags ) ; if ( page ) return page ; return no_page_table ( vma , flags ) ; } if ( is_hugepd ( __hugepd ( pmd_val ( pmdval ) ) ) ) { page = follow_huge_pd ( vma , address , __hugepd ( pmd_val ( pmdval ) ) , flags , PMD_SHIFT ) ; if ( page ) return page ; return no_page_table ( vma , flags ) ; } retry : if ( ! pmd_present ( pmdval ) ) { if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) return no_page_table ( vma , flags ) ; VM_BUG_ON ( thp_migration_supported ( ) && ! is_pmd_migration_entry ( pmdval ) ) ; if ( is_pmd_migration_entry ( pmdval ) ) pmd_migration_entry_wait ( mm , pmd ) ; pmdval = READ_ONCE ( * pmd ) ; if ( pmd_none ( pmdval ) ) return no_page_table ( vma , flags ) ; goto retry ; } if ( pmd_devmap ( pmdval ) ) { ptl = pmd_lock ( mm , pmd ) ; page = follow_devmap_pmd ( vma , address , pmd , flags , & ctx -> pgmap ) ; spin_unlock ( ptl ) ; if ( page ) return page ; } if ( likely ( ! pmd_trans_huge ( pmdval ) ) ) return follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; if ( ( flags & FOLL_NUMA ) && pmd_protnone ( pmdval ) ) return no_page_table ( vma , flags ) ; retry_locked : ptl = pmd_lock ( mm , pmd ) ; if ( unlikely ( pmd_none ( * pmd ) ) ) { spin_unlock ( ptl ) ; return no_page_table ( vma , flags ) ; } if ( unlikely ( ! pmd_present ( * pmd ) ) ) { spin_unlock ( ptl ) ; if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) return no_page_table ( vma , flags ) ; pmd_migration_entry_wait ( mm , pmd ) ; goto retry_locked ; } if ( unlikely ( ! pmd_trans_huge ( * pmd ) ) ) { spin_unlock ( ptl ) ; return follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; } if ( flags & FOLL_SPLIT ) { int ret ; page = pmd_page ( * pmd ) ; if ( is_huge_zero_page ( page ) ) { spin_unlock ( ptl ) ; ret = 0 ; split_huge_pmd ( vma , pmd , address ) ; if ( pmd_trans_unstable ( pmd ) ) ret = - EBUSY ; } else { <S2SV_StartBug> get_page ( page ) ; <S2SV_EndBug> spin_unlock ( ptl ) ; lock_page ( page ) ; ret = split_huge_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; if ( pmd_none ( * pmd ) ) return no_page_table ( vma , flags ) ; } return ret ? ERR_PTR ( ret ) : follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; } page = follow_trans_huge_pmd ( vma , address , pmd , flags ) ; spin_unlock ( ptl ) ; ctx -> page_mask = HPAGE_PMD_NR - 1 ; return page ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { if ( unlikely ( ! try_get_page ( page ) ) ) { spin_unlock ( ptl ) ; return ERR_PTR ( - ENOMEM ) ; } <S2SV_ModEnd> spin_unlock ( ptl\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27675\n\n```\nCWE-362 evtchn_port_t evtchn_from_irq ( unsigned irq ) { <S2SV_StartBug> if ( WARN ( irq >= nr_irqs , \"Invalid<S2SV_blank>irq<S2SV_blank>%d!\\\\n\" , irq ) ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> return info_for_irq ( irq ) -> evtchn ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> irq ) { const struct irq_info * info = NULL ; if ( likely ( irq < nr_irqs ) ) info = info_for_irq ( irq ) ; if ( ! info <S2SV_ModEnd> ) return 0 <S2SV_ModStart> 0 ; return info <S2SV_ModEnd> -> evtchn ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9454\n\n```\nCWE-125 int ares_parse_a_reply ( const unsigned char * abuf , int alen , struct hostent * * host ) { unsigned int qdcount , ancount ; int status , i , rr_type , rr_class , rr_len , naddrs ; long int len ; int naliases ; const unsigned char * aptr ; char * hostname , * rr_name , * rr_data , * * aliases ; struct in_addr * addrs ; struct hostent * hostent ; * host = NULL ; if ( alen < HFIXEDSZ ) return ARES_EBADRESP ; qdcount = DNS_HEADER_QDCOUNT ( abuf ) ; ancount = DNS_HEADER_ANCOUNT ( abuf ) ; if ( qdcount != 1 ) return ARES_EBADRESP ; aptr = abuf + HFIXEDSZ ; status = ares_expand_name ( aptr , abuf , alen , & hostname , & len ) ; if ( status != ARES_SUCCESS ) return status ; if ( aptr + len + QFIXEDSZ > abuf + alen ) { free ( hostname ) ; return ARES_EBADRESP ; } aptr += len + QFIXEDSZ ; addrs = malloc ( ancount * sizeof ( struct in_addr ) ) ; if ( ! addrs ) { free ( hostname ) ; return ARES_ENOMEM ; } aliases = malloc ( ( ancount + 1 ) * sizeof ( char * ) ) ; if ( ! aliases ) { free ( hostname ) ; free ( addrs ) ; return ARES_ENOMEM ; } naddrs = 0 ; naliases = 0 ; for ( i = 0 ; i < ( int ) ancount ; i ++ ) { status = ares_expand_name ( aptr , abuf , alen , & rr_name , & len ) ; if ( status != ARES_SUCCESS ) break ; aptr += len ; if ( aptr + RRFIXEDSZ > abuf + alen ) { free ( rr_name ) ; status = ARES_EBADRESP ; break ; } rr_type = DNS_RR_TYPE ( aptr ) ; rr_class = DNS_RR_CLASS ( aptr ) ; rr_len = DNS_RR_LEN ( aptr ) ; <S2SV_StartBug> aptr += RRFIXEDSZ ; <S2SV_EndBug> if ( rr_class == C_IN && rr_type == T_A && rr_len == sizeof ( struct in_addr ) && strcasecmp ( rr_name , hostname ) == 0 ) { memcpy ( & addrs [ naddrs ] , aptr , sizeof ( struct in_addr ) ) ; naddrs ++ ; status = ARES_SUCCESS ; } if ( rr_class == C_IN && rr_type == T_CNAME ) { aliases [ naliases ] = rr_name ; naliases ++ ; status = ares_expand_name ( aptr , abuf , alen , & rr_data , & len ) ; if ( status != ARES_SUCCESS ) break ; free ( hostname ) ; hostname = rr_data ; } else free ( rr_name ) ; aptr += rr_len ; if ( aptr > abuf + alen ) { status = ARES_EBADRESP ; break ; } } if ( status == ARES_SUCCESS && naddrs == 0 ) status = ARES_ENODATA ; if ( status == ARES_SUCCESS ) { aliases [ naliases ] = NULL ; hostent = malloc ( sizeof ( struct hostent ) ) ; if ( hostent ) { hostent -> h_addr_list = malloc ( ( naddrs + 1 ) * sizeof ( char * ) ) ; if ( hostent -> h_addr_list ) { hostent -> h_name = hostname ; hostent -> h_aliases = aliases ; hostent -> h_addrtype = AF_INET ; hostent -> h_length = sizeof ( struct in_addr ) ; for ( i = 0 ; i < naddrs ; i ++ ) hostent -> h_addr_list [ i ] = ( char * ) & addrs [ i ] ; hostent -> h_addr_list [ naddrs ] = NULL ; * host = hostent ; return ARES_SUCCESS ; } free ( hostent ) ; } status = ARES_ENOMEM ; } for ( i = 0 ; i < naliases ; i ++ ) free ( aliases [ i ] ) ; free ( aliases ) ; free ( addrs ) ; free ( hostname ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += RRFIXEDSZ ; if ( aptr + rr_len > abuf + alen ) { free ( rr_name ) ; status = ARES_EBADRESP ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10272\n\n```\nCWE-119 static int readContigStripsIntoBuffer ( TIFF * in , uint8 * buf ) { uint8 * bufp = buf ; int32 bytes_read = 0 ; uint32 strip , nstrips = TIFFNumberOfStrips ( in ) ; uint32 stripsize = TIFFStripSize ( in ) ; uint32 rows = 0 ; uint32 rps = TIFFGetFieldDefaulted ( in , TIFFTAG_ROWSPERSTRIP , & rps ) ; tsize_t scanline_size = TIFFScanlineSize ( in ) ; if ( scanline_size == 0 ) { TIFFError ( \"\" , \"TIFF<S2SV_blank>scanline<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero!\" ) ; return 0 ; } for ( strip = 0 ; strip < nstrips ; strip ++ ) { bytes_read = TIFFReadEncodedStrip ( in , strip , bufp , - 1 ) ; rows = bytes_read / scanline_size ; if ( ( strip < ( nstrips - 1 ) ) && ( bytes_read != ( int32 ) stripsize ) ) TIFFError ( \"\" , \"Strip<S2SV_blank>%d:<S2SV_blank>read<S2SV_blank>%lu<S2SV_blank>bytes,<S2SV_blank>strip<S2SV_blank>size<S2SV_blank>%lu\" , ( int ) strip + 1 , ( unsigned long ) bytes_read , ( unsigned long ) stripsize ) ; if ( bytes_read < 0 && ! ignore ) { TIFFError ( \"\" , \"Error<S2SV_blank>reading<S2SV_blank>strip<S2SV_blank>%lu<S2SV_blank>after<S2SV_blank>%lu<S2SV_blank>rows\" , ( unsigned long ) strip , ( unsigned long ) rows ) ; return 0 ; } <S2SV_StartBug> bufp += bytes_read ; <S2SV_EndBug> } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } bufp += stripsize <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4997\n\n```\nCWE-264 static int check_entry_size_and_hooks ( struct ipt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ipt_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct ipt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ipt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } if ( ! ip_checkentry ( & e -> ip ) ) return - EINVAL ; <S2SV_StartBug> err = xt_check_entry_offsets ( e , e -> target_offset , e -> next_offset ) ; <S2SV_EndBug> if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_debug ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , e -> elems , e ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 STATIC int xfs_attr_node_addname ( xfs_da_args_t * args ) { xfs_da_state_t * state ; xfs_da_state_blk_t * blk ; xfs_inode_t * dp ; xfs_mount_t * mp ; int committed , retval , error ; trace_xfs_attr_node_addname ( args ) ; dp = args -> dp ; mp = dp -> i_mount ; restart : state = xfs_da_state_alloc ( ) ; state -> args = args ; state -> mp = mp ; state -> blocksize = state -> mp -> m_sb . sb_blocksize ; state -> node_ents = state -> mp -> m_attr_node_ents ; error = xfs_da3_node_lookup_int ( state , & retval ) ; if ( error ) goto out ; blk = & state -> path . blk [ state -> path . active - 1 ] ; ASSERT ( blk -> magic == XFS_ATTR_LEAF_MAGIC ) ; if ( ( args -> flags & ATTR_REPLACE ) && ( retval == ENOATTR ) ) { goto out ; } else if ( retval == EEXIST ) { if ( args -> flags & ATTR_CREATE ) goto out ; trace_xfs_attr_node_replace ( args ) ; args -> op_flags |= XFS_DA_OP_RENAME ; args -> blkno2 = args -> blkno ; args -> index2 = args -> index ; args -> rmtblkno2 = args -> rmtblkno ; args -> rmtblkcnt2 = args -> rmtblkcnt ; <S2SV_StartBug> args -> rmtblkno = 0 ; <S2SV_EndBug> <S2SV_StartBug> args -> rmtblkcnt = 0 ; <S2SV_EndBug> } retval = xfs_attr3_leaf_add ( blk -> bp , state -> args ) ; if ( retval == ENOSPC ) { if ( state -> path . active == 1 ) { xfs_da_state_free ( state ) ; state = NULL ; xfs_bmap_init ( args -> flist , args -> firstblock ) ; error = xfs_attr3_leaf_to_node ( args ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; goto out ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) goto out ; goto restart ; } xfs_bmap_init ( args -> flist , args -> firstblock ) ; error = xfs_da3_split ( state ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; goto out ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; } else { xfs_da3_fixhashpath ( state , & state -> path ) ; } xfs_da_state_free ( state ) ; state = NULL ; error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) goto out ; if ( args -> rmtblkno > 0 ) { error = xfs_attr_rmtval_set ( args ) ; if ( error ) return ( error ) ; } if ( args -> op_flags & XFS_DA_OP_RENAME ) { error = xfs_attr3_leaf_flipflags ( args ) ; if ( error ) goto out ; args -> index = args -> index2 ; args -> blkno = args -> blkno2 ; args -> rmtblkno = args -> rmtblkno2 ; <S2SV_StartBug> args -> rmtblkcnt = args -> rmtblkcnt2 ; <S2SV_EndBug> if ( args -> rmtblkno ) { error = xfs_attr_rmtval_remove ( args ) ; if ( error ) return ( error ) ; } args -> flags |= XFS_ATTR_INCOMPLETE ; state = xfs_da_state_alloc ( ) ; state -> args = args ; state -> mp = mp ; state -> blocksize = state -> mp -> m_sb . sb_blocksize ; state -> node_ents = state -> mp -> m_attr_node_ents ; state -> inleaf = 0 ; error = xfs_da3_node_lookup_int ( state , & retval ) ; if ( error ) goto out ; blk = & state -> path . blk [ state -> path . active - 1 ] ; ASSERT ( blk -> magic == XFS_ATTR_LEAF_MAGIC ) ; error = xfs_attr3_leaf_remove ( blk -> bp , args ) ; xfs_da3_fixhashpath ( state , & state -> path ) ; if ( retval && ( state -> path . active > 1 ) ) { xfs_bmap_init ( args -> flist , args -> firstblock ) ; error = xfs_da3_join ( state ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; goto out ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; } error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) goto out ; } else if ( args -> rmtblkno > 0 ) { error = xfs_attr3_leaf_clearflag ( args ) ; if ( error ) goto out ; } retval = error = 0 ; out : if ( state ) xfs_da_state_free ( state ) ; if ( error ) return ( error ) ; return ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; args -> rmtvaluelen2 = args -> rmtvaluelen ; args -> <S2SV_ModStart> args -> rmtblkcnt = 0 ; args -> rmtvaluelen <S2SV_ModStart> args -> rmtblkcnt2 ; args -> rmtvaluelen = args -> rmtvaluelen2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8633\n\n```\nCWE-119 static int fwnet_incoming_packet ( struct fwnet_device * dev , __be32 * buf , int len , int source_node_id , int generation , bool is_broadcast ) { struct sk_buff * skb ; struct net_device * net = dev -> netdev ; struct rfc2734_header hdr ; unsigned lf ; unsigned long flags ; struct fwnet_peer * peer ; struct fwnet_partial_datagram * pd ; int fg_off ; int dg_size ; u16 datagram_label ; int retval ; u16 ether_type ; <S2SV_StartBug> hdr . w0 = be32_to_cpu ( buf [ 0 ] ) ; <S2SV_EndBug> lf = fwnet_get_hdr_lf ( & hdr ) ; if ( lf == RFC2374_HDR_UNFRAG ) { ether_type = fwnet_get_hdr_ether_type ( & hdr ) ; buf ++ ; len -= RFC2374_UNFRAG_HDR_SIZE ; skb = dev_alloc_skb ( len + LL_RESERVED_SPACE ( net ) ) ; if ( unlikely ( ! skb ) ) { net -> stats . rx_dropped ++ ; return - ENOMEM ; } skb_reserve ( skb , LL_RESERVED_SPACE ( net ) ) ; memcpy ( skb_put ( skb , len ) , buf , len ) ; return fwnet_finish_incoming_packet ( net , skb , source_node_id , is_broadcast , ether_type ) ; } <S2SV_StartBug> hdr . w1 = ntohl ( buf [ 1 ] ) ; <S2SV_EndBug> buf += 2 ; len -= RFC2374_FRAG_HDR_SIZE ; if ( lf == RFC2374_HDR_FIRSTFRAG ) { ether_type = fwnet_get_hdr_ether_type ( & hdr ) ; fg_off = 0 ; } else { ether_type = 0 ; fg_off = fwnet_get_hdr_fg_off ( & hdr ) ; } datagram_label = fwnet_get_hdr_dgl ( & hdr ) ; dg_size = fwnet_get_hdr_dg_size ( & hdr ) ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> peer = fwnet_peer_find_by_node_id ( dev , source_node_id , generation ) ; if ( ! peer ) { retval = - ENOENT ; goto fail ; } pd = fwnet_pd_find ( peer , datagram_label ) ; if ( pd == NULL ) { while ( peer -> pdg_size >= FWNET_MAX_FRAGMENTS ) { fwnet_pd_delete ( list_first_entry ( & peer -> pd_list , struct fwnet_partial_datagram , pd_link ) ) ; peer -> pdg_size -- ; } pd = fwnet_pd_new ( net , peer , datagram_label , dg_size , buf , fg_off , len ) ; if ( pd == NULL ) { retval = - ENOMEM ; goto fail ; } peer -> pdg_size ++ ; } else { if ( fwnet_frag_overlap ( pd , fg_off , len ) || pd -> datagram_size != dg_size ) { fwnet_pd_delete ( pd ) ; pd = fwnet_pd_new ( net , peer , datagram_label , dg_size , buf , fg_off , len ) ; if ( pd == NULL ) { peer -> pdg_size -- ; retval = - ENOMEM ; goto fail ; } } else { if ( ! fwnet_pd_update ( peer , pd , buf , fg_off , len ) ) { fwnet_pd_delete ( pd ) ; peer -> pdg_size -- ; retval = - ENOMEM ; goto fail ; } } } if ( lf == RFC2374_HDR_FIRSTFRAG ) pd -> ether_type = ether_type ; if ( fwnet_pd_is_complete ( pd ) ) { ether_type = pd -> ether_type ; peer -> pdg_size -- ; skb = skb_get ( pd -> skb ) ; fwnet_pd_delete ( pd ) ; spin_unlock_irqrestore ( & dev -> lock , flags ) ; return fwnet_finish_incoming_packet ( net , skb , source_node_id , false , ether_type ) ; } retval = 0 ; fail : spin_unlock_irqrestore ( & dev -> lock , flags ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u16 ether_type ; if ( len <= RFC2374_UNFRAG_HDR_SIZE ) return 0 ; <S2SV_ModStart> ) ; } if ( len <= RFC2374_FRAG_HDR_SIZE ) return 0 ; <S2SV_ModStart> hdr ) ; if ( fg_off + len > dg_size ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3673\n\n```\nCWE-20 sctp_disposition_t sctp_sf_do_asconf ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { struct sctp_chunk * chunk = arg ; struct sctp_chunk * asconf_ack = NULL ; struct sctp_paramhdr * err_param = NULL ; sctp_addiphdr_t * hdr ; <S2SV_StartBug> union sctp_addr_param * addr_param ; <S2SV_EndBug> __u32 serial ; int length ; if ( ! sctp_vtag_verify ( chunk , asoc ) ) { sctp_add_cmd_sf ( commands , SCTP_CMD_REPORT_BAD_TAG , SCTP_NULL ( ) ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } if ( ! net -> sctp . addip_noauth && ! chunk -> auth ) return sctp_sf_discard_chunk ( net , ep , asoc , type , arg , commands ) ; if ( ! sctp_chunk_length_valid ( chunk , sizeof ( sctp_addip_chunk_t ) ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; hdr = ( sctp_addiphdr_t * ) chunk -> skb -> data ; serial = ntohl ( hdr -> serial ) ; <S2SV_StartBug> addr_param = ( union sctp_addr_param * ) hdr -> params ; <S2SV_EndBug> length = ntohs ( addr_param -> p . length ) ; if ( length < sizeof ( sctp_paramhdr_t ) ) return sctp_sf_violation_paramlen ( net , ep , asoc , type , arg , ( void * ) addr_param , commands ) ; if ( ! sctp_verify_asconf ( asoc , <S2SV_StartBug> ( sctp_paramhdr_t * ) ( ( void * ) addr_param + length ) , <S2SV_EndBug> ( void * ) chunk -> chunk_end , & err_param ) ) return sctp_sf_violation_paramlen ( net , ep , asoc , type , arg , ( void * ) err_param , commands ) ; if ( serial == asoc -> peer . addip_serial + 1 ) { if ( ! chunk -> has_asconf ) sctp_assoc_clean_asconf_ack_cache ( asoc ) ; asconf_ack = sctp_process_asconf ( ( struct sctp_association * ) asoc , chunk ) ; if ( ! asconf_ack ) return SCTP_DISPOSITION_NOMEM ; } else if ( serial < asoc -> peer . addip_serial + 1 ) { asconf_ack = sctp_assoc_lookup_asconf_ack ( asoc , hdr -> serial ) ; if ( ! asconf_ack ) return SCTP_DISPOSITION_DISCARD ; asconf_ack -> transport = NULL ; } else { return SCTP_DISPOSITION_DISCARD ; } asconf_ack -> dest = chunk -> source ; sctp_add_cmd_sf ( commands , SCTP_CMD_REPLY , SCTP_CHUNK ( asconf_ack ) ) ; if ( asoc -> new_transport ) { sctp_sf_heartbeat ( ep , asoc , type , asoc -> new_transport , commands ) ; ( ( struct sctp_association * ) asoc ) -> new_transport = NULL ; } return SCTP_DISPOSITION_CONSUME ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * hdr ; __u32 serial <S2SV_ModEnd> ; if ( <S2SV_ModStart> serial ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> ( asoc , chunk , true , <S2SV_ModEnd> & err_param )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void write_modes ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_StartBug> vp9_writer * w , TOKENEXTRA * * tok , TOKENEXTRA * tok_end ) { <S2SV_EndBug> <S2SV_StartBug> int mi_row , mi_col ; <S2SV_EndBug> for ( mi_row = tile -> mi_row_start ; mi_row < tile -> mi_row_end ; mi_row += MI_BLOCK_SIZE ) { <S2SV_StartBug> vp9_zero ( cpi -> mb . e_mbd . left_seg_context ) ; <S2SV_EndBug> for ( mi_col = tile -> mi_col_start ; mi_col < tile -> mi_col_end ; mi_col += MI_BLOCK_SIZE ) write_modes_sb ( cpi , tile , w , tok , tok_end , mi_row , mi_col , BLOCK_64X64 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const tile , vpx_writer <S2SV_ModEnd> * w , <S2SV_ModStart> * tok , const TOKENEXTRA * const <S2SV_ModEnd> tok_end ) { <S2SV_ModStart> tok_end ) { const VP9_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & cpi -> td . mb . e_mbd ; <S2SV_ModStart> mi_row , mi_col ; set_partition_probs ( cm , xd ) <S2SV_ModStart> { vp9_zero ( xd -> <S2SV_ModEnd> left_seg_context ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-79(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17082\n\n```\nCWE-79 static int php_handler ( request_rec * r ) { php_struct * volatile ctx ; void * conf ; apr_bucket_brigade * volatile brigade ; apr_bucket * bucket ; apr_status_t rv ; request_rec * volatile parent_req = NULL ; TSRMLS_FETCH ( ) ; # define PHPAP_INI_OFF php_apache_ini_dtor ( r , parent_req TSRMLS_CC ) ; conf = ap_get_module_config ( r -> per_dir_config , & php5_module ) ; ctx = SG ( server_context ) ; if ( ctx == NULL || ( ctx && ctx -> request_processed && ! strcmp ( r -> protocol , \"INCLUDED\" ) ) ) { normal : ctx = SG ( server_context ) = apr_pcalloc ( r -> pool , sizeof ( * ctx ) ) ; apr_pool_cleanup_register ( r -> pool , ( void * ) & SG ( server_context ) , php_server_context_cleanup , apr_pool_cleanup_null ) ; ctx -> r = r ; ctx = NULL ; } else { parent_req = ctx -> r ; ctx -> r = r ; } apply_config ( conf ) ; if ( strcmp ( r -> handler , PHP_MAGIC_TYPE ) && strcmp ( r -> handler , PHP_SOURCE_MAGIC_TYPE ) && strcmp ( r -> handler , PHP_SCRIPT ) ) { if ( ! AP2 ( xbithack ) || strcmp ( r -> handler , \"text/html\" ) || ! ( r -> finfo . protection & APR_UEXECUTE ) ) { PHPAP_INI_OFF ; return DECLINED ; } } if ( r -> used_path_info == AP_REQ_REJECT_PATH_INFO && r -> path_info && r -> path_info [ 0 ] ) { PHPAP_INI_OFF ; return HTTP_NOT_FOUND ; } if ( ! AP2 ( engine ) ) { PHPAP_INI_OFF ; return DECLINED ; } if ( r -> finfo . filetype == 0 ) { php_apache_sapi_log_message_ex ( \"script<S2SV_blank>\\'%s\\'<S2SV_blank>not<S2SV_blank>found<S2SV_blank>or<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>stat\" , r TSRMLS_CC ) ; PHPAP_INI_OFF ; return HTTP_NOT_FOUND ; } if ( r -> finfo . filetype == APR_DIR ) { php_apache_sapi_log_message_ex ( \"attempt<S2SV_blank>to<S2SV_blank>invoke<S2SV_blank>directory<S2SV_blank>\\'%s\\'<S2SV_blank>as<S2SV_blank>script\" , r TSRMLS_CC ) ; PHPAP_INI_OFF ; return HTTP_FORBIDDEN ; } if ( r -> main == NULL || r -> subprocess_env != r -> main -> subprocess_env ) { ap_add_common_vars ( r ) ; ap_add_cgi_vars ( r ) ; } zend_first_try { if ( ctx == NULL ) { brigade = apr_brigade_create ( r -> pool , r -> connection -> bucket_alloc ) ; ctx = SG ( server_context ) ; ctx -> brigade = brigade ; if ( php_apache_request_ctor ( r , ctx TSRMLS_CC ) != SUCCESS ) { zend_bailout ( ) ; } } else { if ( ! parent_req ) { parent_req = ctx -> r ; } if ( parent_req && parent_req -> handler && strcmp ( parent_req -> handler , PHP_MAGIC_TYPE ) && strcmp ( parent_req -> handler , PHP_SOURCE_MAGIC_TYPE ) && strcmp ( parent_req -> handler , PHP_SCRIPT ) ) { if ( php_apache_request_ctor ( r , ctx TSRMLS_CC ) != SUCCESS ) { zend_bailout ( ) ; } } if ( parent_req && parent_req -> status != HTTP_OK && parent_req -> status != 413 && strcmp ( r -> protocol , \"INCLUDED\" ) ) { parent_req = NULL ; goto normal ; } ctx -> r = r ; brigade = ctx -> brigade ; } if ( AP2 ( last_modified ) ) { ap_update_mtime ( r , r -> finfo . mtime ) ; ap_set_last_modified ( r ) ; } if ( strncmp ( r -> handler , PHP_SOURCE_MAGIC_TYPE , sizeof ( PHP_SOURCE_MAGIC_TYPE ) - 1 ) == 0 ) { zend_syntax_highlighter_ini syntax_highlighter_ini ; php_get_highlight_struct ( & syntax_highlighter_ini ) ; highlight_file ( ( char * ) r -> filename , & syntax_highlighter_ini TSRMLS_CC ) ; } else { zend_file_handle zfd ; zfd . type = ZEND_HANDLE_FILENAME ; zfd . filename = ( char * ) r -> filename ; zfd . free_filename = 0 ; zfd . opened_path = NULL ; if ( ! parent_req ) { php_execute_script ( & zfd TSRMLS_CC ) ; } else { zend_execute_scripts ( ZEND_INCLUDE TSRMLS_CC , NULL , 1 , & zfd ) ; } apr_table_set ( r -> notes , \"mod_php_memory_usage\" , apr_psprintf ( ctx -> r -> pool , \"%\" APR_SIZE_T_FMT , zend_memory_peak_usage ( 1 TSRMLS_CC ) ) ) ; } } zend_end_try ( ) ; if ( ! parent_req ) { php_apache_request_dtor ( r TSRMLS_CC ) ; ctx -> request_processed = 1 ; <S2SV_StartBug> bucket = apr_bucket_eos_create ( r -> connection -> bucket_alloc ) ; <S2SV_EndBug> APR_BRIGADE_INSERT_TAIL ( brigade , bucket ) ; rv = ap_pass_brigade ( r -> output_filters , brigade ) ; if ( rv != APR_SUCCESS || r -> connection -> aborted ) { zend_first_try { php_handle_aborted_connection ( ) ; } zend_end_try ( ) ; } apr_brigade_cleanup ( brigade ) ; apr_pool_cleanup_run ( r -> pool , ( void * ) & SG ( server_context ) , php_server_context_cleanup ) ; } else { ctx -> r = parent_req ; } return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 1 ; apr_brigade_cleanup ( brigade ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15888\n\n```\nCWE-416 void luaT_adjustvarargs ( lua_State * L , int nfixparams , CallInfo * ci , const Proto * p ) { int i ; int actual = cast_int ( L -> top - ci -> func ) - 1 ; int nextra = actual - nfixparams ; ci -> u . l . nextraargs = nextra ; <S2SV_StartBug> checkstackGC ( L , p -> maxstacksize + 1 ) ; <S2SV_EndBug> setobjs2s ( L , L -> top ++ , ci -> func ) ; for ( i = 1 ; i <= nfixparams ; i ++ ) { setobjs2s ( L , L -> top ++ , ci -> func + i ) ; setnilvalue ( s2v ( ci -> func + i ) ) ; } ci -> func += actual + 1 ; ci -> top += actual + 1 ; lua_assert ( L -> top <= ci -> top && ci -> top <= L -> stack_last ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = nextra ; luaD_checkstack <S2SV_ModEnd> ( L ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-1712\n\n```\nCWE-416 int bus_verify_polkit_async ( sd_bus_message * call , int capability , const char * action , const char * * details , bool interactive , uid_t good_user , Hashmap * * registry , sd_bus_error * ret_error ) { # if ENABLE_POLKIT _cleanup_ ( sd_bus_message_unrefp ) sd_bus_message * pk = NULL ; AsyncPolkitQuery * q ; <S2SV_StartBug> const char * sender ; <S2SV_EndBug> <S2SV_StartBug> sd_bus_message_handler_t callback ; <S2SV_EndBug> void * userdata ; int c ; # endif int r ; assert ( call ) ; assert ( action ) ; <S2SV_StartBug> assert ( registry ) ; <S2SV_EndBug> r = check_good_user ( call , good_user ) ; if ( r != 0 ) return r ; # if ENABLE_POLKIT q = hashmap_get ( * registry , call ) ; if ( q ) { int authorized , challenge ; assert ( q -> reply ) ; if ( ! streq ( q -> action , action ) || ! strv_equal ( q -> details , ( char * * ) details ) ) return - ESTALE ; if ( sd_bus_message_is_method_error ( q -> reply , NULL ) ) { const sd_bus_error * e ; e = sd_bus_message_get_error ( q -> reply ) ; if ( sd_bus_error_has_name ( e , SD_BUS_ERROR_SERVICE_UNKNOWN ) || sd_bus_error_has_name ( e , SD_BUS_ERROR_NAME_HAS_NO_OWNER ) ) return - EACCES ; sd_bus_error_copy ( ret_error , e ) ; return - sd_bus_error_get_errno ( e ) ; } r = sd_bus_message_enter_container ( q -> reply , 'r' , \"bba{ss}\" ) ; if ( r >= 0 ) r = sd_bus_message_read ( q -> reply , \"bb\" , & authorized , & challenge ) ; if ( r < 0 ) return r ; if ( authorized ) return 1 ; if ( challenge ) return sd_bus_error_set ( ret_error , SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED , \"Interactive<S2SV_blank>authentication<S2SV_blank>required.\" ) ; return - EACCES ; } # endif r = sd_bus_query_sender_privilege ( call , capability ) ; if ( r < 0 ) return r ; else if ( r > 0 ) return 1 ; # if ENABLE_POLKIT if ( sd_bus_get_current_message ( call -> bus ) != call ) return - EINVAL ; callback = sd_bus_get_current_handler ( call -> bus ) ; if ( ! callback ) return - EINVAL ; userdata = sd_bus_get_current_userdata ( call -> bus ) ; sender = sd_bus_message_get_sender ( call ) ; if ( ! sender ) return - EBADMSG ; c = sd_bus_message_get_allow_interactive_authorization ( call ) ; if ( c < 0 ) return c ; if ( c > 0 ) interactive = true ; r = hashmap_ensure_allocated ( registry , NULL ) ; if ( r < 0 ) return r ; r = sd_bus_message_new_method_call ( call -> bus , & pk , \"org.freedesktop.PolicyKit1\" , \"/org/freedesktop/PolicyKit1/Authority\" , \"org.freedesktop.PolicyKit1.Authority\" , \"CheckAuthorization\" ) ; if ( r < 0 ) return r ; r = sd_bus_message_append ( pk , \"(sa{sv})s\" , \"system-bus-name\" , 1 , \"name\" , \"s\" , sender , action ) ; if ( r < 0 ) return r ; r = bus_message_append_strv_key_value ( pk , details ) ; if ( r < 0 ) return r ; r = sd_bus_message_append ( pk , \"us\" , interactive , NULL ) ; if ( r < 0 ) return r ; q = new ( AsyncPolkitQuery , 1 ) ; if ( ! q ) return - ENOMEM ; * q = ( AsyncPolkitQuery ) { . request = sd_bus_message_ref ( call ) , . callback = callback , . userdata = userdata , } ; q -> action = strdup ( action ) ; if ( ! q -> action ) { async_polkit_query_free ( q ) ; return - ENOMEM ; } q -> details = strv_copy ( ( char * * ) details ) ; if ( ! q -> details ) { async_polkit_query_free ( q ) ; return - ENOMEM ; } r = hashmap_put ( * registry , call , q ) ; if ( r < 0 ) { async_polkit_query_free ( q ) ; return r ; } q -> registry = * registry ; r = sd_bus_call_async ( call -> bus , & q -> slot , pk , async_polkit_callback , q , 0 ) ; if ( r < 0 ) { async_polkit_query_free ( q ) ; return r ; } return 0 ; # endif return - EACCES ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * q ; int c ; # endif <S2SV_ModStart> * sender ; int r ; assert ( call ) ; assert ( action ) ; assert ( registry ) ; r = check_good_user ( call , good_user ) ; if ( r != 0 ) return r ; # if ENABLE_POLKIT q = hashmap_get ( * registry , call ) ; if ( q ) { int authorized , challenge ; assert ( q -> reply ) ; if ( ! streq ( q -> action , action ) || ! strv_equal ( q -> details , ( char * * ) details ) ) return - ESTALE ; if ( sd_bus_message_is_method_error ( q -> reply , NULL ) ) { const sd_bus_error * e ; e = sd_bus_message_get_error ( q -> reply ) ; if ( sd_bus_error_has_name ( e , SD_BUS_ERROR_SERVICE_UNKNOWN ) || sd_bus_error_has_name ( e , SD_BUS_ERROR_NAME_HAS_NO_OWNER ) ) return - EACCES ; sd_bus_error_copy ( ret_error , e ) ; return - sd_bus_error_get_errno ( e ) ; } r = sd_bus_message_enter_container ( q -> reply , 'r' , \"bba{ss}\" ) ; if ( r >= 0 ) r = sd_bus_message_read ( q -> reply , \"bb\" , & authorized , & challenge ) ; if ( r < 0 ) return r ; if ( authorized ) return 1 ; if ( challenge ) return sd_bus_error_set ( ret_error , SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED , \"Interactive<S2SV_blank>authentication<S2SV_blank>required.\" ) ; return - EACCES ; } # endif r = sd_bus_query_sender_privilege ( call , capability ) ; if ( r < 0 ) return r ; else if ( r > 0 ) return 1 ; sender = sd_bus_message_get_sender ( call ) ; if ( ! sender ) return - EBADMSG ; # if ENABLE_POLKIT c = sd_bus_message_get_allow_interactive_authorization ( call ) ; if ( c < 0 ) return c ; if ( c > 0 ) interactive = true ; r = hashmap_ensure_allocated ( registry , NULL ) ; if ( r < 0 ) return r ; r = sd_bus_message_new_method_call ( call -> bus , & pk , \"org.freedesktop.PolicyKit1\" , \"/org/freedesktop/PolicyKit1/Authority\" , \"org.freedesktop.PolicyKit1.Authority\" , \"CheckAuthorization\" ) ; if ( r < 0 ) return r ; r = sd_bus_message_append ( pk , \"(sa{sv})s\" , \"system-bus-name\" , 1 , \"name\" , \"s\" , sender , <S2SV_ModEnd> action ) ; <S2SV_ModStart> action ) ; if ( r < 0 ) return r ; r = bus_message_append_strv_key_value ( pk , details ) ; if ( r < 0 ) return r ; r = sd_bus_message_append ( pk , \"us\" , interactive , NULL ) ; if ( r < 0 ) return r ; q = new ( AsyncPolkitQuery , 1 ) ; if ( ! q ) return - ENOMEM ; * q = ( AsyncPolkitQuery ) { . request = sd_bus_message_ref ( call ) , } ; q -> action = strdup ( action ) ; if ( ! q -> action ) { async_polkit_query_free ( q ) ; return - ENOMEM ; } q -> details = strv_copy ( ( char * * ) details ) ; if ( ! q -> details ) { async_polkit_query_free ( q ) ; return - ENOMEM ; } r = hashmap_put ( * registry , call , q ) ; if ( r < 0 ) { async_polkit_query_free ( q ) ; return r ; } q -> registry = * registry ; r = sd_bus_call_async ( call -> bus , & q -> slot , pk , async_polkit_callback , q , 0 ) ; if ( r < 0 ) { async_polkit_query_free ( q ) ; return r ; } return 0 ; # endif <S2SV_ModEnd> return - EACCES\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 void vlan_setup ( struct net_device * dev ) { ether_setup ( dev ) ; dev -> priv_flags |= IFF_802_1Q_VLAN ; <S2SV_StartBug> dev -> priv_flags &= ~ IFF_XMIT_DST_RELEASE ; <S2SV_EndBug> dev -> tx_queue_len = 0 ; dev -> netdev_ops = & vlan_netdev_ops ; dev -> destructor = free_netdev ; dev -> ethtool_ops = & vlan_ethtool_ops ; memset ( dev -> broadcast , 0 , ETH_ALEN ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> priv_flags &= ~ ( IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING ) <S2SV_ModEnd> ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6418\n\n```\nCWE-125 char * messageFindArgument ( const message * m , const char * variable ) { int i ; size_t len ; assert ( m != NULL ) ; assert ( variable != NULL ) ; len = strlen ( variable ) ; for ( i = 0 ; i < m -> numberOfArguments ; i ++ ) { const char * ptr ; ptr = messageGetArgument ( m , i ) ; if ( ( ptr == NULL ) || ( * ptr == '\\\\0' ) ) continue ; # ifdef CL_DEBUG cli_dbgmsg ( \"messageFindArgument:<S2SV_blank>compare<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>%s\\\\n\" , ( unsigned long ) len , variable , ptr ) ; # endif if ( strncasecmp ( ptr , variable , len ) == 0 ) { ptr = & ptr [ len ] ; while ( isspace ( * ptr ) ) ptr ++ ; if ( * ptr != '=' ) { cli_dbgmsg ( \"messageFindArgument:<S2SV_blank>no<S2SV_blank>\\'=\\'<S2SV_blank>sign<S2SV_blank>found<S2SV_blank>in<S2SV_blank>MIME<S2SV_blank>header<S2SV_blank>\\'%s\\'<S2SV_blank>(%s)\\\\n\" , variable , messageGetArgument ( m , i ) ) ; return NULL ; } <S2SV_StartBug> if ( ( * ++ ptr == \\'\"\\' ) && ( strchr ( & ptr [ 1 ] , \\'\"\\' ) != NULL ) ) { <S2SV_EndBug> char * ret = cli_strdup ( ++ ptr ) ; char * p ; if ( ret == NULL ) return NULL ; if ( ( p = strchr ( ret , \\'\"\\' ) ) != NULL ) { ret [ strlen ( ret ) - 1 ] = '\\\\0' ; * p = '\\\\0' ; } return ret ; } return cli_strdup ( ptr ) ; } } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( strlen ( ptr ) > 2 ) && (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19080\n\n```\nCWE-401 static int nfp_flower_spawn_phy_reprs ( struct nfp_app * app , struct nfp_flower_priv * priv ) { struct nfp_eth_table * eth_tbl = app -> pf -> eth_tbl ; atomic_t * replies = & priv -> reify_replies ; struct nfp_flower_repr_priv * repr_priv ; struct nfp_repr * nfp_repr ; struct sk_buff * ctrl_skb ; struct nfp_reprs * reprs ; int err , reify_cnt ; unsigned int i ; ctrl_skb = nfp_flower_cmsg_mac_repr_start ( app , eth_tbl -> count ) ; if ( ! ctrl_skb ) return - ENOMEM ; reprs = nfp_reprs_alloc ( eth_tbl -> max_index + 1 ) ; if ( ! reprs ) { err = - ENOMEM ; goto err_free_ctrl_skb ; } for ( i = 0 ; i < eth_tbl -> count ; i ++ ) { unsigned int phys_port = eth_tbl -> ports [ i ] . index ; struct net_device * repr ; struct nfp_port * port ; u32 cmsg_port_id ; repr = nfp_repr_alloc ( app ) ; if ( ! repr ) { err = - ENOMEM ; goto err_reprs_clean ; } repr_priv = kzalloc ( sizeof ( * repr_priv ) , GFP_KERNEL ) ; if ( ! repr_priv ) { err = - ENOMEM ; <S2SV_StartBug> goto err_reprs_clean ; <S2SV_EndBug> } nfp_repr = netdev_priv ( repr ) ; nfp_repr -> app_priv = repr_priv ; repr_priv -> nfp_repr = nfp_repr ; port = nfp_port_alloc ( app , NFP_PORT_PHYS_PORT , repr ) ; if ( IS_ERR ( port ) ) { err = PTR_ERR ( port ) ; <S2SV_StartBug> nfp_repr_free ( repr ) ; <S2SV_EndBug> goto err_reprs_clean ; } err = nfp_port_init_phy_port ( app -> pf , app , port , i ) ; <S2SV_StartBug> if ( err ) { <S2SV_EndBug> nfp_port_free ( port ) ; nfp_repr_free ( repr ) ; goto err_reprs_clean ; } SET_NETDEV_DEV ( repr , & priv -> nn -> pdev -> dev ) ; nfp_net_get_mac_addr ( app -> pf , repr , port ) ; cmsg_port_id = nfp_flower_cmsg_phys_port ( phys_port ) ; err = nfp_repr_init ( app , repr , cmsg_port_id , port , priv -> nn -> dp . netdev ) ; if ( err ) { <S2SV_StartBug> nfp_port_free ( port ) ; <S2SV_EndBug> nfp_repr_free ( repr ) ; goto err_reprs_clean ; } nfp_flower_cmsg_mac_repr_add ( ctrl_skb , i , eth_tbl -> ports [ i ] . nbi , eth_tbl -> ports [ i ] . base , phys_port ) ; RCU_INIT_POINTER ( reprs -> reprs [ phys_port ] , repr ) ; nfp_info ( app -> cpp , \"Phys<S2SV_blank>Port<S2SV_blank>%d<S2SV_blank>Representor(%s)<S2SV_blank>created\\\\n\" , phys_port , repr -> name ) ; } nfp_app_reprs_set ( app , NFP_REPR_TYPE_PHYS_PORT , reprs ) ; atomic_set ( replies , 0 ) ; reify_cnt = nfp_flower_reprs_reify ( app , NFP_REPR_TYPE_PHYS_PORT , true ) ; if ( reify_cnt < 0 ) { err = reify_cnt ; nfp_warn ( app -> cpp , \"Failed<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>firmware<S2SV_blank>about<S2SV_blank>repr<S2SV_blank>creation\\\\n\" ) ; goto err_reprs_remove ; } err = nfp_flower_wait_repr_reify ( app , replies , reify_cnt ) ; if ( err ) goto err_reprs_remove ; nfp_ctrl_tx ( app -> ctrl , ctrl_skb ) ; return 0 ; err_reprs_remove : reprs = nfp_app_reprs_set ( app , NFP_REPR_TYPE_PHYS_PORT , NULL ) ; err_reprs_clean : nfp_reprs_clean_and_free ( app , reprs ) ; err_free_ctrl_skb : kfree_skb ( ctrl_skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOMEM ; nfp_repr_free ( repr ) ; <S2SV_ModStart> port ) ; kfree ( repr_priv ) ; <S2SV_ModStart> err ) { kfree ( repr_priv ) ; <S2SV_ModStart> err ) { kfree ( repr_priv ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7645\n\n```\nCWE-20 int nfsd_dispatch ( struct svc_rqst * rqstp , __be32 * statp ) { struct svc_procedure * proc ; kxdrproc_t xdr ; __be32 nfserr ; __be32 * nfserrp ; dprintk ( \"nfsd_dispatch:<S2SV_blank>vers<S2SV_blank>%d<S2SV_blank>proc<S2SV_blank>%d\\\\n\" , rqstp -> rq_vers , rqstp -> rq_proc ) ; <S2SV_StartBug> proc = rqstp -> rq_procinfo ; <S2SV_EndBug> rqstp -> rq_cachetype = proc -> pc_cachetype ; xdr = proc -> pc_decode ; if ( xdr && ! xdr ( rqstp , ( __be32 * ) rqstp -> rq_arg . head [ 0 ] . iov_base , rqstp -> rq_argp ) ) { dprintk ( \"nfsd:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>arguments!\\\\n\" ) ; * statp = rpc_garbage_args ; return 1 ; } switch ( nfsd_cache_lookup ( rqstp ) ) { case RC_DROPIT : return 0 ; case RC_REPLY : return 1 ; case RC_DOIT : ; } nfserrp = rqstp -> rq_res . head [ 0 ] . iov_base + rqstp -> rq_res . head [ 0 ] . iov_len ; rqstp -> rq_res . head [ 0 ] . iov_len += sizeof ( __be32 ) ; nfserr = proc -> pc_func ( rqstp , rqstp -> rq_argp , rqstp -> rq_resp ) ; nfserr = map_new_errors ( rqstp -> rq_vers , nfserr ) ; if ( nfserr == nfserr_dropit || test_bit ( RQ_DROPME , & rqstp -> rq_flags ) ) { dprintk ( \"nfsd:<S2SV_blank>Dropping<S2SV_blank>request;<S2SV_blank>may<S2SV_blank>be<S2SV_blank>revisited<S2SV_blank>later\\\\n\" ) ; nfsd_cache_update ( rqstp , RC_NOCACHE , NULL ) ; return 0 ; } if ( rqstp -> rq_proc != 0 ) * nfserrp ++ = nfserr ; if ( ! ( nfserr && rqstp -> rq_vers == 2 ) ) { xdr = proc -> pc_encode ; if ( xdr && ! xdr ( rqstp , nfserrp , rqstp -> rq_resp ) ) { dprintk ( \"nfsd:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>result!\\\\n\" ) ; nfsd_cache_update ( rqstp , RC_NOCACHE , NULL ) ; * statp = rpc_system_err ; return 1 ; } } nfsd_cache_update ( rqstp , rqstp -> rq_cachetype , statp + 1 ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rq_procinfo ; if ( nfs_request_too_big ( rqstp , proc ) ) { dprintk ( \"nfsd:<S2SV_blank>NFSv%d<S2SV_blank>argument<S2SV_blank>too<S2SV_blank>large\\\\n\" , rqstp -> rq_vers ) ; * statp = rpc_garbage_args ; return 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9732\n\n```\nCWE-400 void * gstd_accept ( int fd , char * * display_creds , char * * export_name , char * * mech ) { gss_name_t client ; gss_OID mech_oid ; struct gstd_tok * tok ; gss_ctx_id_t ctx = GSS_C_NO_CONTEXT ; gss_buffer_desc in , out ; OM_uint32 maj , min ; int ret ; * display_creds = NULL ; * export_name = NULL ; out . length = 0 ; in . length = 0 ; read_packet ( fd , & in , 60000 , 1 ) ; again : while ( ( ret = read_packet ( fd , & in , 60000 , 0 ) ) == - 2 ) ; if ( ret < 1 ) return NULL ; maj = gss_accept_sec_context ( & min , & ctx , GSS_C_NO_CREDENTIAL , & in , GSS_C_NO_CHANNEL_BINDINGS , & client , & mech_oid , & out , NULL , <S2SV_StartBug> NULL , NULL ) ; <S2SV_EndBug> if ( out . length && write_packet ( fd , & out ) ) { gss_release_buffer ( & min , & out ) ; return NULL ; } <S2SV_StartBug> GSTD_GSS_ERROR ( maj , min , NULL , \"gss_accept_sec_context\" ) ; <S2SV_EndBug> if ( maj & GSS_S_CONTINUE_NEEDED ) goto again ; * display_creds = gstd_get_display_name ( client ) ; * export_name = gstd_get_export_name ( client ) ; * mech = gstd_get_mech ( mech_oid ) ; gss_release_name ( & min , & client ) ; SETUP_GSTD_TOK ( tok , ctx , fd , \"gstd_accept\" ) ; return tok ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL , NULL ) ; gss_release_buffer ( & min , & in <S2SV_ModStart> NULL ; } gss_release_buffer ( & min , & out ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2694\n\n```\nCWE-264 static void pkinit_server_verify_padata ( krb5_context context , krb5_data * req_pkt , krb5_kdc_req * request , krb5_enc_tkt_part * enc_tkt_reply , krb5_pa_data * data , krb5_kdcpreauth_callbacks cb , krb5_kdcpreauth_rock rock , krb5_kdcpreauth_moddata moddata , krb5_kdcpreauth_verify_respond_fn respond , void * arg ) { krb5_error_code retval = 0 ; krb5_data authp_data = { 0 , 0 , NULL } , krb5_authz = { 0 , 0 , NULL } ; krb5_pa_pk_as_req * reqp = NULL ; krb5_pa_pk_as_req_draft9 * reqp9 = NULL ; krb5_auth_pack * auth_pack = NULL ; krb5_auth_pack_draft9 * auth_pack9 = NULL ; pkinit_kdc_context plgctx = NULL ; pkinit_kdc_req_context reqctx = NULL ; krb5_checksum cksum = { 0 , 0 , 0 , NULL } ; krb5_data * der_req = NULL ; int valid_eku = 0 , valid_san = 0 ; krb5_data k5data ; int is_signed = 1 ; krb5_pa_data * * e_data = NULL ; krb5_kdcpreauth_modreq modreq = NULL ; pkiDebug ( \"pkinit_verify_padata:<S2SV_blank>entered!\\\\n\" ) ; if ( data == NULL || data -> length <= 0 || data -> contents == NULL ) { <S2SV_StartBug> ( * respond ) ( arg , 0 , NULL , NULL , NULL ) ; <S2SV_EndBug> return ; } if ( moddata == NULL ) { ( * respond ) ( arg , EINVAL , NULL , NULL , NULL ) ; return ; } plgctx = pkinit_find_realm_context ( context , moddata , request -> server ) ; if ( plgctx == NULL ) { <S2SV_StartBug> ( * respond ) ( arg , 0 , NULL , NULL , NULL ) ; <S2SV_EndBug> return ; } # ifdef DEBUG_ASN1 print_buffer_bin ( data -> contents , data -> length , \"/tmp/kdc_as_req\" ) ; # endif retval = pkinit_init_kdc_req_context ( context , & reqctx ) ; if ( retval ) goto cleanup ; reqctx -> pa_type = data -> pa_type ; PADATA_TO_KRB5DATA ( data , & k5data ) ; switch ( ( int ) data -> pa_type ) { case KRB5_PADATA_PK_AS_REQ : pkiDebug ( \"processing<S2SV_blank>KRB5_PADATA_PK_AS_REQ\\\\n\" ) ; retval = k5int_decode_krb5_pa_pk_as_req ( & k5data , & reqp ) ; if ( retval ) { pkiDebug ( \"decode_krb5_pa_pk_as_req<S2SV_blank>failed\\\\n\" ) ; goto cleanup ; } # ifdef DEBUG_ASN1 print_buffer_bin ( reqp -> signedAuthPack . data , reqp -> signedAuthPack . length , \"/tmp/kdc_signed_data\" ) ; # endif retval = cms_signeddata_verify ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , CMS_SIGN_CLIENT , plgctx -> opts -> require_crl_checking , ( unsigned char * ) reqp -> signedAuthPack . data , reqp -> signedAuthPack . length , ( unsigned char * * ) & authp_data . data , & authp_data . length , ( unsigned char * * ) & krb5_authz . data , & krb5_authz . length , & is_signed ) ; break ; case KRB5_PADATA_PK_AS_REP_OLD : case KRB5_PADATA_PK_AS_REQ_OLD : pkiDebug ( \"processing<S2SV_blank>KRB5_PADATA_PK_AS_REQ_OLD\\\\n\" ) ; retval = k5int_decode_krb5_pa_pk_as_req_draft9 ( & k5data , & reqp9 ) ; if ( retval ) { pkiDebug ( \"decode_krb5_pa_pk_as_req_draft9<S2SV_blank>failed\\\\n\" ) ; goto cleanup ; } # ifdef DEBUG_ASN1 print_buffer_bin ( reqp9 -> signedAuthPack . data , reqp9 -> signedAuthPack . length , \"/tmp/kdc_signed_data_draft9\" ) ; # endif retval = cms_signeddata_verify ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , CMS_SIGN_DRAFT9 , plgctx -> opts -> require_crl_checking , ( unsigned char * ) reqp9 -> signedAuthPack . data , reqp9 -> signedAuthPack . length , ( unsigned char * * ) & authp_data . data , & authp_data . length , ( unsigned char * * ) & krb5_authz . data , & krb5_authz . length , NULL ) ; break ; default : pkiDebug ( \"unrecognized<S2SV_blank>pa_type<S2SV_blank>=<S2SV_blank>%d\\\\n\" , data -> pa_type ) ; retval = EINVAL ; goto cleanup ; } if ( retval ) { pkiDebug ( \"pkcs7_signeddata_verify<S2SV_blank>failed\\\\n\" ) ; goto cleanup ; } if ( is_signed ) { retval = verify_client_san ( context , plgctx , reqctx , request -> client , & valid_san ) ; if ( retval ) goto cleanup ; if ( ! valid_san ) { pkiDebug ( \"%s:<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>an<S2SV_blank>acceptable<S2SV_blank>SAN<S2SV_blank>in<S2SV_blank>user<S2SV_blank>\" \"certificate\\\\n\" , __FUNCTION__ ) ; retval = KRB5KDC_ERR_CLIENT_NAME_MISMATCH ; goto cleanup ; } retval = verify_client_eku ( context , plgctx , reqctx , & valid_eku ) ; if ( retval ) goto cleanup ; if ( ! valid_eku ) { pkiDebug ( \"%s:<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>an<S2SV_blank>acceptable<S2SV_blank>EKU<S2SV_blank>in<S2SV_blank>user<S2SV_blank>\" \"certificate\\\\n\" , __FUNCTION__ ) ; retval = KRB5KDC_ERR_INCONSISTENT_KEY_PURPOSE ; goto cleanup ; } } else { if ( ! krb5_principal_compare ( context , request -> client , krb5_anonymous_principal ( ) ) ) { retval = KRB5KDC_ERR_PREAUTH_FAILED ; krb5_set_error_message ( context , retval , _ ( \"Pkinit<S2SV_blank>request<S2SV_blank>not<S2SV_blank>signed,<S2SV_blank>but<S2SV_blank>client<S2SV_blank>\" \"not<S2SV_blank>anonymous.\" ) ) ; goto cleanup ; } } # ifdef DEBUG_ASN1 print_buffer_bin ( authp_data . data , authp_data . length , \"/tmp/kdc_auth_pack\" ) ; # endif OCTETDATA_TO_KRB5DATA ( & authp_data , & k5data ) ; switch ( ( int ) data -> pa_type ) { case KRB5_PADATA_PK_AS_REQ : retval = k5int_decode_krb5_auth_pack ( & k5data , & auth_pack ) ; if ( retval ) { pkiDebug ( \"failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>krb5_auth_pack\\\\n\" ) ; goto cleanup ; } retval = krb5_check_clockskew ( context , auth_pack -> pkAuthenticator . ctime ) ; if ( retval ) goto cleanup ; if ( auth_pack -> clientPublicValue != NULL ) { retval = server_check_dh ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , & auth_pack -> clientPublicValue -> algorithm . parameters , plgctx -> opts -> dh_min_bits ) ; if ( retval ) { pkiDebug ( \"bad<S2SV_blank>dh<S2SV_blank>parameters\\\\n\" ) ; goto cleanup ; } } else if ( ! is_signed ) { retval = KRB5KDC_ERR_PREAUTH_FAILED ; krb5_set_error_message ( context , retval , _ ( \"Anonymous<S2SV_blank>pkinit<S2SV_blank>without<S2SV_blank>DH<S2SV_blank>public<S2SV_blank>\" \"value<S2SV_blank>not<S2SV_blank>supported.\" ) ) ; goto cleanup ; } der_req = cb -> request_body ( context , rock ) ; retval = krb5_c_make_checksum ( context , CKSUMTYPE_NIST_SHA , NULL , 0 , der_req , & cksum ) ; if ( retval ) { pkiDebug ( \"unable<S2SV_blank>to<S2SV_blank>calculate<S2SV_blank>AS<S2SV_blank>REQ<S2SV_blank>checksum\\\\n\" ) ; goto cleanup ; } if ( cksum . length != auth_pack -> pkAuthenticator . paChecksum . length || k5_bcmp ( cksum . contents , auth_pack -> pkAuthenticator . paChecksum . contents , cksum . length ) != 0 ) { pkiDebug ( \"failed<S2SV_blank>to<S2SV_blank>match<S2SV_blank>the<S2SV_blank>checksum\\\\n\" ) ; # ifdef DEBUG_CKSUM pkiDebug ( \"calculating<S2SV_blank>checksum<S2SV_blank>on<S2SV_blank>buf<S2SV_blank>size<S2SV_blank>(%d)\\\\n\" , req_pkt -> length ) ; print_buffer ( req_pkt -> data , req_pkt -> length ) ; pkiDebug ( \"received<S2SV_blank>checksum<S2SV_blank>type=%d<S2SV_blank>size=%d<S2SV_blank>\" , auth_pack -> pkAuthenticator . paChecksum . checksum_type , auth_pack -> pkAuthenticator . paChecksum . length ) ; print_buffer ( auth_pack -> pkAuthenticator . paChecksum . contents , auth_pack -> pkAuthenticator . paChecksum . length ) ; pkiDebug ( \"expected<S2SV_blank>checksum<S2SV_blank>type=%d<S2SV_blank>size=%d<S2SV_blank>\" , cksum . checksum_type , cksum . length ) ; print_buffer ( cksum . contents , cksum . length ) ; # endif retval = KRB5KDC_ERR_PA_CHECKSUM_MUST_BE_INCLUDED ; goto cleanup ; } if ( reqp -> kdcPkId . data != NULL ) { int valid_kdcPkId = 0 ; retval = pkinit_check_kdc_pkid ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , ( unsigned char * ) reqp -> kdcPkId . data , reqp -> kdcPkId . length , & valid_kdcPkId ) ; if ( retval ) goto cleanup ; if ( ! valid_kdcPkId ) pkiDebug ( \"kdcPkId<S2SV_blank>in<S2SV_blank>AS_REQ<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>KDC\\'s<S2SV_blank>cert\" \"RFC<S2SV_blank>says<S2SV_blank>to<S2SV_blank>ignore<S2SV_blank>and<S2SV_blank>proceed\\\\n\" ) ; } reqctx -> rcv_auth_pack = auth_pack ; auth_pack = NULL ; break ; case KRB5_PADATA_PK_AS_REP_OLD : case KRB5_PADATA_PK_AS_REQ_OLD : retval = k5int_decode_krb5_auth_pack_draft9 ( & k5data , & auth_pack9 ) ; if ( retval ) { pkiDebug ( \"failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>krb5_auth_pack_draft9\\\\n\" ) ; goto cleanup ; } if ( auth_pack9 -> clientPublicValue != NULL ) { retval = server_check_dh ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , & auth_pack9 -> clientPublicValue -> algorithm . parameters , plgctx -> opts -> dh_min_bits ) ; if ( retval ) { pkiDebug ( \"bad<S2SV_blank>dh<S2SV_blank>parameters\\\\n\" ) ; goto cleanup ; } } reqctx -> rcv_auth_pack9 = auth_pack9 ; auth_pack9 = NULL ; break ; } enc_tkt_reply -> flags |= TKT_FLG_PRE_AUTH ; modreq = ( krb5_kdcpreauth_modreq ) reqctx ; reqctx = NULL ; cleanup : if ( retval && data -> pa_type == KRB5_PADATA_PK_AS_REQ ) { pkiDebug ( \"pkinit_verify_padata<S2SV_blank>failed:<S2SV_blank>creating<S2SV_blank>e-data\\\\n\" ) ; if ( pkinit_create_edata ( context , plgctx -> cryptoctx , reqctx -> cryptoctx , plgctx -> idctx , plgctx -> opts , retval , & e_data ) ) pkiDebug ( \"pkinit_create_edata<S2SV_blank>failed\\\\n\" ) ; } switch ( ( int ) data -> pa_type ) { case KRB5_PADATA_PK_AS_REQ : free_krb5_pa_pk_as_req ( & reqp ) ; free ( cksum . contents ) ; break ; case KRB5_PADATA_PK_AS_REP_OLD : case KRB5_PADATA_PK_AS_REQ_OLD : free_krb5_pa_pk_as_req_draft9 ( & reqp9 ) ; } free ( authp_data . data ) ; free ( krb5_authz . data ) ; if ( reqctx != NULL ) pkinit_fini_kdc_req_context ( context , reqctx ) ; free_krb5_auth_pack ( & auth_pack ) ; free_krb5_auth_pack_draft9 ( context , & auth_pack9 ) ; ( * respond ) ( arg , retval , modreq , e_data , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( arg , EINVAL <S2SV_ModEnd> , NULL , <S2SV_ModStart> ( arg , EINVAL <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_init_second_pass_spatial_svc ( VP9_COMP * cpi ) { SVC * const svc = & cpi -> svc ; int i ; for ( i = 0 ; i < svc -> number_spatial_layers ; ++ i ) { <S2SV_StartBug> struct twopass_rc * const twopass = & svc -> layer_context [ i ] . twopass ; <S2SV_EndBug> svc -> spatial_layer_id = i ; vp9_init_second_pass ( cpi ) ; twopass -> total_stats . spatial_layer_id = i ; twopass -> total_left_stats . spatial_layer_id = i ; } svc -> spatial_layer_id = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ) { TWO_PASS <S2SV_ModEnd> * const twopass\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15856\n\n```\nCWE-835 static enum rules_token lex ( struct scanner * s , union lvalue * val ) { skip_more_whitespace_and_comments : while ( is_space ( peek ( s ) ) ) if ( next ( s ) == '\\\\n' ) return TOK_END_OF_LINE ; if ( chr ( s , '#' ) ) { skip_to_eol ( s ) ; goto skip_more_whitespace_and_comments ; } if ( eof ( s ) ) return TOK_END_OF_FILE ; s -> token_line = s -> line ; s -> token_column = s -> column ; s -> buf_pos = 0 ; if ( chr ( s , '<' ) ) { <S2SV_StartBug> while ( peek ( s ) != '>' && ! eol ( s ) ) <S2SV_EndBug> buf_append ( s , next ( s ) ) ; if ( ! chr ( s , '>' ) ) { scanner_err ( s , \"unterminated<S2SV_blank>keysym<S2SV_blank>literal\" ) ; return TOK_ERROR ; } if ( ! buf_append ( s , '\\\\0' ) ) { scanner_err ( s , \"keysym<S2SV_blank>literal<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) ; return TOK_ERROR ; } val -> string . str = s -> buf ; val -> string . len = s -> buf_pos ; return TOK_LHS_KEYSYM ; } if ( chr ( s , ':' ) ) return TOK_COLON ; if ( chr ( s , '!' ) ) return TOK_BANG ; if ( chr ( s , '~' ) ) return TOK_TILDE ; if ( chr ( s , \\'\\\\\"\\' ) ) { while ( ! eof ( s ) && ! eol ( s ) && peek ( s ) != \\'\\\\\"\\' ) { if ( chr ( s , '\\\\\\\\' ) ) { uint8_t o ; if ( chr ( s , '\\\\\\\\' ) ) { buf_append ( s , '\\\\\\\\' ) ; } else if ( chr ( s , \\'\"\\' ) ) { buf_append ( s , \\'\"\\' ) ; } else if ( chr ( s , 'x' ) || chr ( s , 'X' ) ) { if ( hex ( s , & o ) ) buf_append ( s , ( char ) o ) ; else scanner_warn ( s , \"illegal<S2SV_blank>hexadecimal<S2SV_blank>escape<S2SV_blank>sequence<S2SV_blank>in<S2SV_blank>string<S2SV_blank>literal\" ) ; } else if ( oct ( s , & o ) ) { buf_append ( s , ( char ) o ) ; } else { scanner_warn ( s , \"unknown<S2SV_blank>escape<S2SV_blank>sequence<S2SV_blank>(%c)<S2SV_blank>in<S2SV_blank>string<S2SV_blank>literal\" , peek ( s ) ) ; } } else { buf_append ( s , next ( s ) ) ; } } if ( ! chr ( s , \\'\\\\\"\\' ) ) { scanner_err ( s , \"unterminated<S2SV_blank>string<S2SV_blank>literal\" ) ; return TOK_ERROR ; } if ( ! buf_append ( s , '\\\\0' ) ) { scanner_err ( s , \"string<S2SV_blank>literal<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) ; return TOK_ERROR ; } if ( ! is_valid_utf8 ( s -> buf , s -> buf_pos - 1 ) ) { scanner_err ( s , \"string<S2SV_blank>literal<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>UTF-8<S2SV_blank>string\" ) ; return TOK_ERROR ; } val -> string . str = s -> buf ; val -> string . len = s -> buf_pos ; return TOK_STRING ; } if ( is_alpha ( peek ( s ) ) || peek ( s ) == '_' ) { s -> buf_pos = 0 ; while ( is_alnum ( peek ( s ) ) || peek ( s ) == '_' ) buf_append ( s , next ( s ) ) ; if ( ! buf_append ( s , '\\\\0' ) ) { scanner_err ( s , \"identifier<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) ; return TOK_ERROR ; } if ( streq ( s -> buf , \"include\" ) ) return TOK_INCLUDE ; val -> string . str = s -> buf ; val -> string . len = s -> buf_pos ; return TOK_IDENT ; } skip_to_eol ( s ) ; scanner_err ( s , \"unrecognized<S2SV_blank>token\" ) ; return TOK_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( s ) && ! eof ( s )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12730\n\n```\nCWE-665 static int aa_read_header ( AVFormatContext * s ) { int i , j , idx , largest_idx = - 1 ; uint32_t nkey , nval , toc_size , npairs , header_seed = 0 , start ; char key [ 128 ] , val [ 128 ] , codec_name [ 64 ] = { 0 } ; uint8_t output [ 24 ] , dst [ 8 ] , src [ 8 ] ; int64_t largest_size = - 1 , current_size = - 1 , chapter_pos ; struct toc_entry { uint32_t offset ; uint32_t size ; } TOC [ MAX_TOC_ENTRIES ] ; uint32_t header_key_part [ 4 ] ; uint8_t header_key [ 16 ] = { 0 } ; AADemuxContext * c = s -> priv_data ; AVIOContext * pb = s -> pb ; AVStream * st ; <S2SV_StartBug> avio_skip ( pb , 4 ) ; <S2SV_EndBug> avio_skip ( pb , 4 ) ; toc_size = avio_rb32 ( pb ) ; avio_skip ( pb , 4 ) ; if ( toc_size > MAX_TOC_ENTRIES ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < toc_size ; i ++ ) { avio_skip ( pb , 4 ) ; TOC [ i ] . offset = avio_rb32 ( pb ) ; TOC [ i ] . size = avio_rb32 ( pb ) ; } avio_skip ( pb , 24 ) ; npairs = avio_rb32 ( pb ) ; if ( npairs > MAX_DICTIONARY_ENTRIES ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < npairs ; i ++ ) { memset ( val , 0 , sizeof ( val ) ) ; memset ( key , 0 , sizeof ( key ) ) ; avio_skip ( pb , 1 ) ; nkey = avio_rb32 ( pb ) ; nval = avio_rb32 ( pb ) ; avio_get_str ( pb , nkey , key , sizeof ( key ) ) ; avio_get_str ( pb , nval , val , sizeof ( val ) ) ; if ( ! strcmp ( key , \"codec\" ) ) { av_log ( s , AV_LOG_DEBUG , \"Codec<S2SV_blank>is<S2SV_blank><%s>\\\\n\" , val ) ; strncpy ( codec_name , val , sizeof ( codec_name ) - 1 ) ; } else if ( ! strcmp ( key , \"HeaderSeed\" ) ) { av_log ( s , AV_LOG_DEBUG , \"HeaderSeed<S2SV_blank>is<S2SV_blank><%s>\\\\n\" , val ) ; header_seed = atoi ( val ) ; } else if ( ! strcmp ( key , \"HeaderKey\" ) ) { av_log ( s , AV_LOG_DEBUG , \"HeaderKey<S2SV_blank>is<S2SV_blank><%s>\\\\n\" , val ) ; <S2SV_StartBug> sscanf ( val , \"%\" SCNu32 \"%\" SCNu32 \"%\" SCNu32 \"%\" SCNu32 , <S2SV_EndBug> & header_key_part [ 0 ] , & header_key_part [ 1 ] , & header_key_part [ 2 ] , & header_key_part [ 3 ] ) ; <S2SV_StartBug> for ( idx = 0 ; idx < 4 ; idx ++ ) { <S2SV_EndBug> AV_WB32 ( & header_key [ idx * 4 ] , header_key_part [ idx ] ) ; } av_log ( s , AV_LOG_DEBUG , \"Processed<S2SV_blank>HeaderKey<S2SV_blank>is<S2SV_blank>\" ) ; for ( i = 0 ; i < 16 ; i ++ ) av_log ( s , AV_LOG_DEBUG , \"%02x\" , header_key [ i ] ) ; av_log ( s , AV_LOG_DEBUG , \"\\\\n\" ) ; } else { av_dict_set ( & s -> metadata , key , val , 0 ) ; } } if ( c -> aa_fixed_key_len != 16 ) { av_log ( s , AV_LOG_ERROR , \"aa_fixed_key<S2SV_blank>value<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>16<S2SV_blank>bytes!\\\\n\" ) ; return AVERROR ( EINVAL ) ; } if ( ( c -> codec_second_size = get_second_size ( codec_name ) ) == - 1 ) { av_log ( s , AV_LOG_ERROR , \"unknown<S2SV_blank>codec<S2SV_blank><%s>!\\\\n\" , codec_name ) ; return AVERROR ( EINVAL ) ; } c -> tea_ctx = av_tea_alloc ( ) ; if ( ! c -> tea_ctx ) return AVERROR ( ENOMEM ) ; av_tea_init ( c -> tea_ctx , c -> aa_fixed_key , 16 ) ; output [ 0 ] = output [ 1 ] = 0 ; memcpy ( output + 2 , header_key , 16 ) ; idx = 0 ; for ( i = 0 ; i < 3 ; i ++ ) { AV_WB32 ( src , header_seed ) ; AV_WB32 ( src + 4 , header_seed + 1 ) ; header_seed += 2 ; av_tea_crypt ( c -> tea_ctx , dst , src , 1 , NULL , 0 ) ; for ( j = 0 ; j < TEA_BLOCK_SIZE && idx < 18 ; j += 1 , idx += 1 ) { output [ idx ] = output [ idx ] ^ dst [ j ] ; } } memcpy ( c -> file_key , output + 2 , 16 ) ; av_log ( s , AV_LOG_DEBUG , \"File<S2SV_blank>key<S2SV_blank>is<S2SV_blank>\" ) ; for ( i = 0 ; i < 16 ; i ++ ) av_log ( s , AV_LOG_DEBUG , \"%02x\" , c -> file_key [ i ] ) ; av_log ( s , AV_LOG_DEBUG , \"\\\\n\" ) ; st = avformat_new_stream ( s , NULL ) ; if ( ! st ) { av_freep ( & c -> tea_ctx ) ; return AVERROR ( ENOMEM ) ; } st -> codecpar -> codec_type = AVMEDIA_TYPE_AUDIO ; if ( ! strcmp ( codec_name , \"mp332\" ) ) { st -> codecpar -> codec_id = AV_CODEC_ID_MP3 ; st -> codecpar -> sample_rate = 22050 ; st -> need_parsing = AVSTREAM_PARSE_FULL_RAW ; avpriv_set_pts_info ( st , 64 , 8 , 32000 * TIMEPREC ) ; } else if ( ! strcmp ( codec_name , \"acelp85\" ) ) { st -> codecpar -> codec_id = AV_CODEC_ID_SIPR ; st -> codecpar -> block_align = 19 ; st -> codecpar -> channels = 1 ; st -> codecpar -> sample_rate = 8500 ; st -> codecpar -> bit_rate = 8500 ; st -> need_parsing = AVSTREAM_PARSE_FULL_RAW ; avpriv_set_pts_info ( st , 64 , 8 , 8500 * TIMEPREC ) ; } else if ( ! strcmp ( codec_name , \"acelp16\" ) ) { st -> codecpar -> codec_id = AV_CODEC_ID_SIPR ; st -> codecpar -> block_align = 20 ; st -> codecpar -> channels = 1 ; st -> codecpar -> sample_rate = 16000 ; st -> codecpar -> bit_rate = 16000 ; st -> need_parsing = AVSTREAM_PARSE_FULL_RAW ; avpriv_set_pts_info ( st , 64 , 8 , 16000 * TIMEPREC ) ; } for ( i = 1 ; i < toc_size ; i ++ ) { current_size = TOC [ i ] . size ; if ( current_size > largest_size ) { largest_idx = i ; largest_size = current_size ; } } start = TOC [ largest_idx ] . offset ; avio_seek ( pb , start , SEEK_SET ) ; st -> start_time = 0 ; c -> content_start = start ; c -> content_end = start + largest_size ; while ( ( chapter_pos = avio_tell ( pb ) ) >= 0 && chapter_pos < c -> content_end ) { int chapter_idx = s -> nb_chapters ; uint32_t chapter_size = avio_rb32 ( pb ) ; if ( chapter_size == 0 ) break ; chapter_pos -= start + CHAPTER_HEADER_SIZE * chapter_idx ; avio_skip ( pb , 4 + chapter_size ) ; if ( ! avpriv_new_chapter ( s , chapter_idx , st -> time_base , chapter_pos * TIMEPREC , ( chapter_pos + chapter_size ) * TIMEPREC , NULL ) ) return AVERROR ( ENOMEM ) ; } st -> duration = ( largest_size - CHAPTER_HEADER_SIZE * s -> nb_chapters ) * TIMEPREC ; ff_update_cur_dts ( s , st , 0 ) ; avio_seek ( pb , start , SEEK_SET ) ; c -> current_chapter_size = 0 ; c -> seek_offset = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * st ; int ret ; <S2SV_ModStart> val ) ; ret = <S2SV_ModStart> ] ) ; if ( ret != 4 ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12847\n\n```\nCWE-665 int main ( int argc , char * * argv ) { int result ; int error = FALSE ; int display_license = FALSE ; int display_help = FALSE ; int c = 0 ; struct tm * tm , tm_s ; time_t now ; char datestring [ 256 ] ; nagios_macros * mac ; const char * worker_socket = NULL ; int i ; # ifdef HAVE_SIGACTION struct sigaction sig_action ; # endif # ifdef HAVE_GETOPT_H int option_index = 0 ; static struct option long_options [ ] = { { \"help\" , no_argument , 0 , 'h' } , { \"version\" , no_argument , 0 , 'V' } , { \"license\" , no_argument , 0 , 'V' } , { \"verify-config\" , no_argument , 0 , 'v' } , { \"daemon\" , no_argument , 0 , 'd' } , { \"test-scheduling\" , no_argument , 0 , 's' } , { \"precache-objects\" , no_argument , 0 , 'p' } , { \"use-precached-objects\" , no_argument , 0 , 'u' } , { \"enable-timing-point\" , no_argument , 0 , 'T' } , { \"worker\" , required_argument , 0 , 'W' } , { 0 , 0 , 0 , 0 } } ; # define getopt ( argc , argv , o ) getopt_long ( argc , argv , o , long_options , & option_index ) # endif memset ( & loadctl , 0 , sizeof ( loadctl ) ) ; mac = get_global_macros ( ) ; if ( argc < 2 ) error = TRUE ; while ( 1 ) { c = getopt ( argc , argv , \"+hVvdspuxTW\" ) ; if ( c == - 1 || c == EOF ) break ; switch ( c ) { case '?' : case 'h' : display_help = TRUE ; break ; case 'V' : display_license = TRUE ; break ; case 'v' : verify_config ++ ; break ; case 's' : test_scheduling = TRUE ; break ; case 'd' : daemon_mode = TRUE ; break ; case 'p' : precache_objects = TRUE ; break ; case 'u' : use_precached_objects = TRUE ; break ; case 'T' : enable_timing_point = TRUE ; break ; case 'W' : worker_socket = optarg ; break ; case 'x' : printf ( \"Warning:<S2SV_blank>-x<S2SV_blank>is<S2SV_blank>deprecated<S2SV_blank>and<S2SV_blank>will<S2SV_blank>be<S2SV_blank>removed\\\\n\" ) ; break ; default : break ; } } # ifdef DEBUG_MEMORY mtrace ( ) ; # endif if ( worker_socket ) { exit ( nagios_core_worker ( worker_socket ) ) ; } init_main_cfg_vars ( 1 ) ; init_shared_cfg_vars ( 1 ) ; if ( daemon_mode == FALSE ) { printf ( \"\\\\nNagios<S2SV_blank>Core<S2SV_blank>%s\\\\n\" , PROGRAM_VERSION ) ; printf ( \"Copyright<S2SV_blank>(c)<S2SV_blank>2009-present<S2SV_blank>Nagios<S2SV_blank>Core<S2SV_blank>Development<S2SV_blank>Team<S2SV_blank>and<S2SV_blank>Community<S2SV_blank>Contributors\\\\n\" ) ; printf ( \"Copyright<S2SV_blank>(c)<S2SV_blank>1999-2009<S2SV_blank>Ethan<S2SV_blank>Galstad\\\\n\" ) ; printf ( \"Last<S2SV_blank>Modified:<S2SV_blank>%s\\\\n\" , PROGRAM_MODIFICATION_DATE ) ; printf ( \"License:<S2SV_blank>GPL\\\\n\\\\n\" ) ; printf ( \"Website:<S2SV_blank>https://www.nagios.org\\\\n\" ) ; } if ( display_license == TRUE ) { printf ( \"This<S2SV_blank>program<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>you<S2SV_blank>can<S2SV_blank>redistribute<S2SV_blank>it<S2SV_blank>and/or<S2SV_blank>modify\\\\n\" ) ; printf ( \"it<S2SV_blank>under<S2SV_blank>the<S2SV_blank>terms<S2SV_blank>of<S2SV_blank>the<S2SV_blank>GNU<S2SV_blank>General<S2SV_blank>Public<S2SV_blank>License<S2SV_blank>version<S2SV_blank>2<S2SV_blank>as\\\\n\" ) ; printf ( \"published<S2SV_blank>by<S2SV_blank>the<S2SV_blank>Free<S2SV_blank>Software<S2SV_blank>Foundation.\\\\n\\\\n\" ) ; printf ( \"This<S2SV_blank>program<S2SV_blank>is<S2SV_blank>distributed<S2SV_blank>in<S2SV_blank>the<S2SV_blank>hope<S2SV_blank>that<S2SV_blank>it<S2SV_blank>will<S2SV_blank>be<S2SV_blank>useful,\\\\n\" ) ; printf ( \"but<S2SV_blank>WITHOUT<S2SV_blank>ANY<S2SV_blank>WARRANTY;<S2SV_blank>without<S2SV_blank>even<S2SV_blank>the<S2SV_blank>implied<S2SV_blank>warranty<S2SV_blank>of\\\\n\" ) ; printf ( \"MERCHANTABILITY<S2SV_blank>or<S2SV_blank>FITNESS<S2SV_blank>FOR<S2SV_blank>A<S2SV_blank>PARTICULAR<S2SV_blank>PURPOSE.<S2SV_blank><S2SV_blank>See<S2SV_blank>the\\\\n\" ) ; printf ( \"GNU<S2SV_blank>General<S2SV_blank>Public<S2SV_blank>License<S2SV_blank>for<S2SV_blank>more<S2SV_blank>details.\\\\n\\\\n\" ) ; printf ( \"You<S2SV_blank>should<S2SV_blank>have<S2SV_blank>received<S2SV_blank>a<S2SV_blank>copy<S2SV_blank>of<S2SV_blank>the<S2SV_blank>GNU<S2SV_blank>General<S2SV_blank>Public<S2SV_blank>License\\\\n\" ) ; printf ( \"along<S2SV_blank>with<S2SV_blank>this<S2SV_blank>program;<S2SV_blank>if<S2SV_blank>not,<S2SV_blank>write<S2SV_blank>to<S2SV_blank>the<S2SV_blank>Free<S2SV_blank>Software\\\\n\" ) ; printf ( \"Foundation,<S2SV_blank>Inc.,<S2SV_blank>675<S2SV_blank>Mass<S2SV_blank>Ave,<S2SV_blank>Cambridge,<S2SV_blank>MA<S2SV_blank>02139,<S2SV_blank>USA.\\\\n\\\\n\" ) ; exit ( OK ) ; } if ( optind >= argc ) error = TRUE ; if ( error == TRUE || display_help == TRUE ) { printf ( \"Usage:<S2SV_blank>%s<S2SV_blank>[options]<S2SV_blank><main_config_file>\\\\n\" , argv [ 0 ] ) ; printf ( \"\\\\n\" ) ; printf ( \"Options:\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-v,<S2SV_blank>--verify-config<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>all<S2SV_blank>configuration<S2SV_blank>data<S2SV_blank>(-v<S2SV_blank>-v<S2SV_blank>for<S2SV_blank>more<S2SV_blank>info)\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-s,<S2SV_blank>--test-scheduling<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Shows<S2SV_blank>projected/recommended<S2SV_blank>check<S2SV_blank>scheduling<S2SV_blank>and<S2SV_blank>other\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>diagnostic<S2SV_blank>info<S2SV_blank>based<S2SV_blank>on<S2SV_blank>the<S2SV_blank>current<S2SV_blank>configuration<S2SV_blank>files.\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-T,<S2SV_blank>--enable-timing-point<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Enable<S2SV_blank>timed<S2SV_blank>commentary<S2SV_blank>on<S2SV_blank>initialization\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-x,<S2SV_blank>--dont-verify-paths<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Deprecated<S2SV_blank>(Don\\'t<S2SV_blank>check<S2SV_blank>for<S2SV_blank>circular<S2SV_blank>object<S2SV_blank>paths)\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-p,<S2SV_blank>--precache-objects<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Precache<S2SV_blank>object<S2SV_blank>configuration\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-u,<S2SV_blank>--use-precached-objects<S2SV_blank><S2SV_blank>Use<S2SV_blank>precached<S2SV_blank>object<S2SV_blank>config<S2SV_blank>file\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-d,<S2SV_blank>--daemon<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Starts<S2SV_blank>Nagios<S2SV_blank>in<S2SV_blank>daemon<S2SV_blank>mode,<S2SV_blank>instead<S2SV_blank>of<S2SV_blank>as<S2SV_blank>a<S2SV_blank>foreground<S2SV_blank>process\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-W,<S2SV_blank>--worker<S2SV_blank>/path/to/socket<S2SV_blank>Act<S2SV_blank>as<S2SV_blank>a<S2SV_blank>worker<S2SV_blank>for<S2SV_blank>an<S2SV_blank>already<S2SV_blank>running<S2SV_blank>daemon\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"Visit<S2SV_blank>the<S2SV_blank>Nagios<S2SV_blank>website<S2SV_blank>at<S2SV_blank>https://www.nagios.org/<S2SV_blank>for<S2SV_blank>bug<S2SV_blank>fixes,<S2SV_blank>new\\\\n\" ) ; printf ( \"releases,<S2SV_blank>online<S2SV_blank>documentation,<S2SV_blank>FAQs,<S2SV_blank>information<S2SV_blank>on<S2SV_blank>subscribing<S2SV_blank>to\\\\n\" ) ; printf ( \"the<S2SV_blank>mailing<S2SV_blank>lists,<S2SV_blank>and<S2SV_blank>commercial<S2SV_blank>support<S2SV_blank>options<S2SV_blank>for<S2SV_blank>Nagios.\\\\n\" ) ; printf ( \"\\\\n\" ) ; exit ( ERROR ) ; } config_file = nspath_absolute ( argv [ optind ] , NULL ) ; if ( config_file == NULL ) { printf ( \"Error<S2SV_blank>allocating<S2SV_blank>memory.\\\\n\" ) ; exit ( ERROR ) ; } config_file_dir = nspath_absolute_dirname ( config_file , NULL ) ; # ifdef HAVE_SIGACTION sig_action . sa_sigaction = NULL ; sig_action . sa_handler = handle_sigxfsz ; sigfillset ( & sig_action . sa_mask ) ; sig_action . sa_flags = SA_NODEFER | SA_RESTART ; sigaction ( SIGXFSZ , & sig_action , NULL ) ; # else signal ( SIGXFSZ , handle_sigxfsz ) ; # endif if ( verify_config || test_scheduling || precache_objects ) { reset_variables ( ) ; set_loadctl_defaults ( ) ; if ( verify_config ) printf ( \"Reading<S2SV_blank>configuration<S2SV_blank>data...\\\\n\" ) ; result = read_main_config_file ( config_file ) ; if ( result != OK ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>processing<S2SV_blank>main<S2SV_blank>config<S2SV_blank>file!\\\\n\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( verify_config ) printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Read<S2SV_blank>main<S2SV_blank>config<S2SV_blank>file<S2SV_blank>okay...\\\\n\" ) ; if ( ( result = drop_privileges ( nagios_user , nagios_group ) ) == ERROR ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>drop<S2SV_blank>privileges.<S2SV_blank><S2SV_blank>Aborting.\" ) ; exit ( EXIT_FAILURE ) ; } if ( ! verify_config && test_configured_paths ( ) == ERROR ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>One<S2SV_blank>or<S2SV_blank>more<S2SV_blank>path<S2SV_blank>problems<S2SV_blank>detected.<S2SV_blank>Aborting.\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } result = read_all_object_data ( config_file ) ; if ( result != OK ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>processing<S2SV_blank>object<S2SV_blank>config<S2SV_blank>files!\\\\n\\\\n\" ) ; if ( ! strstr ( config_file , \"nagios.cfg\" ) ) { printf ( \"\\\\n***><S2SV_blank>The<S2SV_blank>name<S2SV_blank>of<S2SV_blank>the<S2SV_blank>main<S2SV_blank>configuration<S2SV_blank>file<S2SV_blank>looks<S2SV_blank>suspicious...\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>you<S2SV_blank>are<S2SV_blank>specifying<S2SV_blank>the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>the<S2SV_blank>MAIN<S2SV_blank>configuration<S2SV_blank>file<S2SV_blank>on\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>the<S2SV_blank>command<S2SV_blank>line<S2SV_blank>and<S2SV_blank>not<S2SV_blank>the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>another<S2SV_blank>configuration<S2SV_blank>file.<S2SV_blank><S2SV_blank>The\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>main<S2SV_blank>configuration<S2SV_blank>file<S2SV_blank>is<S2SV_blank>typically<S2SV_blank>\\'%s\\'\\\\n\" , DEFAULT_CONFIG_FILE ) ; } printf ( \"\\\\n***><S2SV_blank>One<S2SV_blank>or<S2SV_blank>more<S2SV_blank>problems<S2SV_blank>was<S2SV_blank>encountered<S2SV_blank>while<S2SV_blank>processing<S2SV_blank>the<S2SV_blank>config<S2SV_blank>files...\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Check<S2SV_blank>your<S2SV_blank>configuration<S2SV_blank>file(s)<S2SV_blank>to<S2SV_blank>ensure<S2SV_blank>that<S2SV_blank>they<S2SV_blank>contain<S2SV_blank>valid\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>directives<S2SV_blank>and<S2SV_blank>data<S2SV_blank>definitions.<S2SV_blank><S2SV_blank>If<S2SV_blank>you<S2SV_blank>are<S2SV_blank>upgrading<S2SV_blank>from<S2SV_blank>a<S2SV_blank>previous\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>version<S2SV_blank>of<S2SV_blank>Nagios,<S2SV_blank>you<S2SV_blank>should<S2SV_blank>be<S2SV_blank>aware<S2SV_blank>that<S2SV_blank>some<S2SV_blank>variables/definitions\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>may<S2SV_blank>have<S2SV_blank>been<S2SV_blank>removed<S2SV_blank>or<S2SV_blank>modified<S2SV_blank>in<S2SV_blank>this<S2SV_blank>version.<S2SV_blank><S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>to<S2SV_blank>read\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>the<S2SV_blank>HTML<S2SV_blank>documentation<S2SV_blank>regarding<S2SV_blank>the<S2SV_blank>config<S2SV_blank>files,<S2SV_blank>as<S2SV_blank>well<S2SV_blank>as<S2SV_blank>the\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\'Whats<S2SV_blank>New\\'<S2SV_blank>section<S2SV_blank>to<S2SV_blank>find<S2SV_blank>out<S2SV_blank>what<S2SV_blank>has<S2SV_blank>changed.\\\\n\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( verify_config ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Read<S2SV_blank>object<S2SV_blank>config<S2SV_blank>files<S2SV_blank>okay...\\\\n\\\\n\" ) ; printf ( \"Running<S2SV_blank>pre-flight<S2SV_blank>check<S2SV_blank>on<S2SV_blank>configuration<S2SV_blank>data...\\\\n\\\\n\" ) ; } result = pre_flight_check ( ) ; if ( result != OK ) { printf ( \"\\\\n***><S2SV_blank>One<S2SV_blank>or<S2SV_blank>more<S2SV_blank>problems<S2SV_blank>was<S2SV_blank>encountered<S2SV_blank>while<S2SV_blank>running<S2SV_blank>the<S2SV_blank>pre-flight<S2SV_blank>check...\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Check<S2SV_blank>your<S2SV_blank>configuration<S2SV_blank>file(s)<S2SV_blank>to<S2SV_blank>ensure<S2SV_blank>that<S2SV_blank>they<S2SV_blank>contain<S2SV_blank>valid\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>directives<S2SV_blank>and<S2SV_blank>data<S2SV_blank>definitions.<S2SV_blank><S2SV_blank>If<S2SV_blank>you<S2SV_blank>are<S2SV_blank>upgrading<S2SV_blank>from<S2SV_blank>a<S2SV_blank>previous\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>version<S2SV_blank>of<S2SV_blank>Nagios,<S2SV_blank>you<S2SV_blank>should<S2SV_blank>be<S2SV_blank>aware<S2SV_blank>that<S2SV_blank>some<S2SV_blank>variables/definitions\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>may<S2SV_blank>have<S2SV_blank>been<S2SV_blank>removed<S2SV_blank>or<S2SV_blank>modified<S2SV_blank>in<S2SV_blank>this<S2SV_blank>version.<S2SV_blank><S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>to<S2SV_blank>read\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>the<S2SV_blank>HTML<S2SV_blank>documentation<S2SV_blank>regarding<S2SV_blank>the<S2SV_blank>config<S2SV_blank>files,<S2SV_blank>as<S2SV_blank>well<S2SV_blank>as<S2SV_blank>the\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\'Whats<S2SV_blank>New\\'<S2SV_blank>section<S2SV_blank>to<S2SV_blank>find<S2SV_blank>out<S2SV_blank>what<S2SV_blank>has<S2SV_blank>changed.\\\\n\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( verify_config ) { printf ( \"\\\\nThings<S2SV_blank>look<S2SV_blank>okay<S2SV_blank>-<S2SV_blank>No<S2SV_blank>serious<S2SV_blank>problems<S2SV_blank>were<S2SV_blank>detected<S2SV_blank>during<S2SV_blank>the<S2SV_blank>pre-flight<S2SV_blank>check\\\\n\" ) ; } if ( test_scheduling == TRUE ) { init_event_queue ( ) ; timing_point ( \"Done<S2SV_blank>initializing<S2SV_blank>event<S2SV_blank>queue\\\\n\" ) ; initialize_retention_data ( config_file ) ; read_initial_state_information ( ) ; timing_point ( \"Retention<S2SV_blank>data<S2SV_blank>and<S2SV_blank>initial<S2SV_blank>state<S2SV_blank>parsed\\\\n\" ) ; init_timing_loop ( ) ; timing_point ( \"Timing<S2SV_blank>loop<S2SV_blank>initialized\\\\n\" ) ; display_scheduling_info ( ) ; } if ( precache_objects ) { result = fcache_objects ( object_precache_file ) ; timing_point ( \"Done<S2SV_blank>precaching<S2SV_blank>objects\\\\n\" ) ; if ( result == OK ) { printf ( \"Object<S2SV_blank>precache<S2SV_blank>file<S2SV_blank>created:\\\\n%s\\\\n\" , object_precache_file ) ; } else { printf ( \"Failed<S2SV_blank>to<S2SV_blank>precache<S2SV_blank>objects<S2SV_blank>to<S2SV_blank>\\'%s\\':<S2SV_blank>%s\\\\n\" , object_precache_file , strerror ( errno ) ) ; } } cleanup ( ) ; timing_point ( \"Exiting\\\\n\" ) ; neb_free_module_list ( ) ; free ( config_file_dir ) ; free ( config_file ) ; exit ( result ) ; } else { if ( strchr ( argv [ 0 ] , '/' ) ) nagios_binary_path = nspath_absolute ( argv [ 0 ] , NULL ) ; else nagios_binary_path = strdup ( argv [ 0 ] ) ; if ( ! nagios_binary_path ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>nagios_binary_path\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( ! ( nagios_iobs = iobroker_create ( ) ) ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>IO<S2SV_blank>broker<S2SV_blank>set:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; exit ( EXIT_FAILURE ) ; } do { wproc_num_workers_spawned = wproc_num_workers_online = 0 ; caught_signal = sigshutdown = FALSE ; sig_id = 0 ; reset_variables ( ) ; timing_point ( \"Variables<S2SV_blank>reset\\\\n\" ) ; nagios_pid = ( int ) getpid ( ) ; result = read_main_config_file ( config_file ) ; if ( result != OK ) { logit ( NSLOG_CONFIG_ERROR , TRUE , \"Error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>process<S2SV_blank>config<S2SV_blank>file<S2SV_blank>\\'%s\\'.<S2SV_blank>Aborting\\\\n\" , config_file ) ; exit ( EXIT_FAILURE ) ; } timing_point ( \"Main<S2SV_blank>config<S2SV_blank>file<S2SV_blank>read\\\\n\" ) ; program_start = time ( NULL ) ; my_free ( mac -> x [ MACRO_PROCESSSTARTTIME ] ) ; asprintf ( & mac -> x [ MACRO_PROCESSSTARTTIME ] , \"%llu\" , ( unsigned long long ) program_start ) ; <S2SV_StartBug> if ( drop_privileges ( nagios_user , nagios_group ) == ERROR ) { <S2SV_EndBug> logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_CONFIG_ERROR , TRUE , \"Failed<S2SV_blank>to<S2SV_blank>drop<S2SV_blank>privileges.<S2SV_blank><S2SV_blank>Aborting.\" ) ; cleanup ( ) ; exit ( ERROR ) ; } if ( test_path_access ( nagios_binary_path , X_OK ) ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>access()<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , nagios_binary_path , strerror ( errno ) ) ; logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>Spawning<S2SV_blank>workers<S2SV_blank>will<S2SV_blank>be<S2SV_blank>impossible.<S2SV_blank>Aborting.\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( test_configured_paths ( ) == ERROR ) { <S2SV_StartBug> exit ( EXIT_FAILURE ) ; <S2SV_EndBug> } if ( daemon_mode == TRUE && sigrestart == FALSE ) { result = daemon_init ( ) ; if ( result == ERROR ) { logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR , TRUE , \"Bailing<S2SV_blank>out<S2SV_blank>due<S2SV_blank>to<S2SV_blank>failure<S2SV_blank>to<S2SV_blank>daemonize.<S2SV_blank>(PID=%d)\" , ( int ) getpid ( ) ) ; cleanup ( ) ; exit ( EXIT_FAILURE ) ; } nagios_pid = ( int ) getpid ( ) ; } logit ( NSLOG_PROCESS_INFO , TRUE , \"Nagios<S2SV_blank>%s<S2SV_blank>starting...<S2SV_blank>(PID=%d)\\\\n\" , PROGRAM_VERSION , ( int ) getpid ( ) ) ; now = time ( NULL ) ; tm = localtime_r ( & now , & tm_s ) ; strftime ( datestring , sizeof ( datestring ) , \"%a<S2SV_blank>%b<S2SV_blank>%d<S2SV_blank>%H:%M:%S<S2SV_blank>%Z<S2SV_blank>%Y\" , tm ) ; logit ( NSLOG_PROCESS_INFO , TRUE , \"Local<S2SV_blank>time<S2SV_blank>is<S2SV_blank>%s\" , datestring ) ; write_log_file_info ( NULL ) ; open_debug_log ( ) ; # ifdef USE_EVENT_BROKER neb_init_modules ( ) ; neb_init_callback_list ( ) ; # endif timing_point ( \"NEB<S2SV_blank>module<S2SV_blank>API<S2SV_blank>initialized\\\\n\" ) ; setup_sighandler ( ) ; if ( qh_init ( qh_socket_path ? qh_socket_path : DEFAULT_QUERY_SOCKET ) != OK ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>query<S2SV_blank>handler.<S2SV_blank>Aborting\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } timing_point ( \"Query<S2SV_blank>handler<S2SV_blank>initialized\\\\n\" ) ; nerd_init ( ) ; timing_point ( \"NERD<S2SV_blank>initialized\\\\n\" ) ; if ( init_workers ( num_check_workers ) < 0 ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Failed<S2SV_blank>to<S2SV_blank>spawn<S2SV_blank>workers.<S2SV_blank>Aborting\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } timing_point ( \"%u<S2SV_blank>workers<S2SV_blank>spawned\\\\n\" , wproc_num_workers_spawned ) ; i = 0 ; while ( i < 50 && wproc_num_workers_online < wproc_num_workers_spawned ) { iobroker_poll ( nagios_iobs , 50 ) ; i ++ ; } timing_point ( \"%u<S2SV_blank>workers<S2SV_blank>connected\\\\n\" , wproc_num_workers_online ) ; set_loadctl_defaults ( ) ; # ifdef USE_EVENT_BROKER if ( neb_load_all_modules ( ) != OK ) { logit ( NSLOG_CONFIG_ERROR , ERROR , \"Error:<S2SV_blank>Module<S2SV_blank>loading<S2SV_blank>failed.<S2SV_blank>Aborting.\\\\n\" ) ; if ( daemon_dumps_core ) neb_unload_all_modules ( NEBMODULE_FORCE_UNLOAD , NEBMODULE_NEB_SHUTDOWN ) ; exit ( EXIT_FAILURE ) ; } timing_point ( \"Modules<S2SV_blank>loaded\\\\n\" ) ; broker_program_state ( NEBTYPE_PROCESS_PRELAUNCH , NEBFLAG_NONE , NEBATTR_NONE , NULL ) ; timing_point ( \"First<S2SV_blank>callback<S2SV_blank>made\\\\n\" ) ; # endif if ( result == OK ) result = read_all_object_data ( config_file ) ; if ( result != OK ) logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_CONFIG_ERROR , TRUE , \"Bailing<S2SV_blank>out<S2SV_blank>due<S2SV_blank>to<S2SV_blank>one<S2SV_blank>or<S2SV_blank>more<S2SV_blank>errors<S2SV_blank>encountered<S2SV_blank>in<S2SV_blank>the<S2SV_blank>configuration<S2SV_blank>files.<S2SV_blank>Run<S2SV_blank>Nagios<S2SV_blank>from<S2SV_blank>the<S2SV_blank>command<S2SV_blank>line<S2SV_blank>with<S2SV_blank>the<S2SV_blank>-v<S2SV_blank>option<S2SV_blank>to<S2SV_blank>verify<S2SV_blank>your<S2SV_blank>config<S2SV_blank>before<S2SV_blank>restarting.<S2SV_blank>(PID=%d)\" , ( int ) getpid ( ) ) ; else { if ( ( result = pre_flight_check ( ) ) != OK ) logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_VERIFICATION_ERROR , TRUE , \"Bailing<S2SV_blank>out<S2SV_blank>due<S2SV_blank>to<S2SV_blank>errors<S2SV_blank>encountered<S2SV_blank>while<S2SV_blank>running<S2SV_blank>the<S2SV_blank>pre-flight<S2SV_blank>check.<S2SV_blank><S2SV_blank>Run<S2SV_blank>Nagios<S2SV_blank>from<S2SV_blank>the<S2SV_blank>command<S2SV_blank>line<S2SV_blank>with<S2SV_blank>the<S2SV_blank>-v<S2SV_blank>option<S2SV_blank>to<S2SV_blank>verify<S2SV_blank>your<S2SV_blank>config<S2SV_blank>before<S2SV_blank>restarting.<S2SV_blank>(PID=%d)\\\\n\" , ( int ) getpid ( ) ) ; } if ( result != OK ) { if ( sigrestart == TRUE ) { cleanup_status_data ( TRUE ) ; } # ifdef USE_EVENT_BROKER broker_program_state ( NEBTYPE_PROCESS_SHUTDOWN , NEBFLAG_PROCESS_INITIATED , NEBATTR_SHUTDOWN_ABNORMAL , NULL ) ; # endif cleanup ( ) ; exit ( ERROR ) ; } timing_point ( \"Object<S2SV_blank>configuration<S2SV_blank>parsed<S2SV_blank>and<S2SV_blank>understood\\\\n\" ) ; fcache_objects ( object_cache_file ) ; timing_point ( \"Objects<S2SV_blank>cached\\\\n\" ) ; init_event_queue ( ) ; timing_point ( \"Event<S2SV_blank>queue<S2SV_blank>initialized\\\\n\" ) ; # ifdef USE_EVENT_BROKER broker_program_state ( NEBTYPE_PROCESS_START , NEBFLAG_NONE , NEBATTR_NONE , NULL ) ; # endif if ( sigrestart == FALSE ) { initialize_status_data ( config_file ) ; timing_point ( \"Status<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; } initialize_downtime_data ( ) ; timing_point ( \"Downtime<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; initialize_retention_data ( config_file ) ; timing_point ( \"Retention<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; read_initial_state_information ( ) ; timing_point ( \"Initial<S2SV_blank>state<S2SV_blank>information<S2SV_blank>read\\\\n\" ) ; initialize_comment_data ( ) ; timing_point ( \"Comment<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; initialize_performance_data ( config_file ) ; timing_point ( \"Performance<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; init_timing_loop ( ) ; timing_point ( \"Event<S2SV_blank>timing<S2SV_blank>loop<S2SV_blank>initialized\\\\n\" ) ; init_check_stats ( ) ; timing_point ( \"check<S2SV_blank>stats<S2SV_blank>initialized\\\\n\" ) ; check_for_nagios_updates ( FALSE , TRUE ) ; timing_point ( \"Update<S2SV_blank>check<S2SV_blank>concluded\\\\n\" ) ; update_all_status_data ( ) ; timing_point ( \"Status<S2SV_blank>data<S2SV_blank>updated\\\\n\" ) ; log_host_states ( INITIAL_STATES , NULL ) ; log_service_states ( INITIAL_STATES , NULL ) ; timing_point ( \"Initial<S2SV_blank>states<S2SV_blank>logged\\\\n\" ) ; sigrestart = FALSE ; launch_command_file_worker ( ) ; timing_point ( \"Command<S2SV_blank>file<S2SV_blank>worker<S2SV_blank>launched\\\\n\" ) ; # ifdef USE_EVENT_BROKER broker_program_state ( NEBTYPE_PROCESS_EVENTLOOPSTART , NEBFLAG_NONE , NEBATTR_NONE , NULL ) ; # endif event_start = time ( NULL ) ; my_free ( mac -> x [ MACRO_EVENTSTARTTIME ] ) ; asprintf ( & mac -> x [ MACRO_EVENTSTARTTIME ] , \"%llu\" , ( unsigned long long ) event_start ) ; timing_point ( \"Entering<S2SV_blank>event<S2SV_blank>execution<S2SV_blank>loop\\\\n\" ) ; event_execution_loop ( ) ; qh_deinit ( qh_socket_path ? qh_socket_path : DEFAULT_QUERY_SOCKET ) ; if ( caught_signal == TRUE ) { if ( sig_id == SIGHUP ) logit ( NSLOG_PROCESS_INFO , TRUE , \"Caught<S2SV_blank>SIGHUP,<S2SV_blank>restarting...\\\\n\" ) ; } # ifdef USE_EVENT_BROKER broker_program_state ( NEBTYPE_PROCESS_EVENTLOOPEND , NEBFLAG_NONE , NEBATTR_NONE , NULL ) ; if ( sigshutdown == TRUE ) broker_program_state ( NEBTYPE_PROCESS_SHUTDOWN , NEBFLAG_USER_INITIATED , NEBATTR_SHUTDOWN_NORMAL , NULL ) ; else if ( sigrestart == TRUE ) broker_program_state ( NEBTYPE_PROCESS_RESTART , NEBFLAG_USER_INITIATED , NEBATTR_RESTART_NORMAL , NULL ) ; # endif save_state_information ( FALSE ) ; cleanup_retention_data ( ) ; cleanup_performance_data ( ) ; cleanup_downtime_data ( ) ; if ( sigrestart == FALSE ) { cleanup_status_data ( TRUE ) ; } free_worker_memory ( WPROC_FORCE ) ; if ( sigshutdown == TRUE ) { iobroker_destroy ( nagios_iobs , IOBROKER_CLOSE_SOCKETS ) ; nagios_iobs = NULL ; logit ( NSLOG_PROCESS_INFO , TRUE , \"Successfully<S2SV_blank>shutdown...<S2SV_blank>(PID=%d)\\\\n\" , ( int ) getpid ( ) ) ; } cleanup ( ) ; close_debug_log ( ) ; } while ( sigrestart == TRUE && sigshutdown == FALSE ) ; if ( daemon_mode == TRUE ) unlink ( lock_file ) ; my_free ( lock_file ) ; my_free ( config_file ) ; my_free ( config_file_dir ) ; my_free ( nagios_binary_path ) ; } return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( daemon_mode == TRUE && sigrestart == FALSE ) { result = daemon_init ( ) ; if ( result == ERROR ) { logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR , TRUE , \"Bailing<S2SV_blank>out<S2SV_blank>due<S2SV_blank>to<S2SV_blank>failure<S2SV_blank>to<S2SV_blank>daemonize.<S2SV_blank>(PID=%d)\" , ( int ) getpid ( ) ) ; cleanup ( ) ; exit ( EXIT_FAILURE ) ; } nagios_pid = ( int ) getpid ( ) ; } if ( <S2SV_ModStart> exit ( EXIT_FAILURE <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-90(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5730\n\n```\nCWE-90 kadm5_ret_t kadm5_create_principal_3 ( void * server_handle , kadm5_principal_ent_t entry , long mask , int n_ks_tuple , krb5_key_salt_tuple * ks_tuple , char * password ) { krb5_db_entry * kdb ; osa_princ_ent_rec adb ; kadm5_policy_ent_rec polent ; krb5_boolean have_polent = FALSE ; krb5_timestamp now ; krb5_tl_data * tl_data_tail ; unsigned int ret ; kadm5_server_handle_t handle = server_handle ; krb5_keyblock * act_mkey ; krb5_kvno act_kvno ; int new_n_ks_tuple = 0 ; krb5_key_salt_tuple * new_ks_tuple = NULL ; CHECK_HANDLE ( server_handle ) ; krb5_clear_error_message ( handle -> context ) ; check_1_6_dummy ( entry , mask , n_ks_tuple , ks_tuple , & password ) ; if ( entry == NULL ) return EINVAL ; if ( ! ( mask & KADM5_PRINCIPAL ) || ( mask & KADM5_MOD_NAME ) || ( mask & KADM5_MOD_TIME ) || ( mask & KADM5_LAST_PWD_CHANGE ) || ( mask & KADM5_MKVNO ) || ( mask & KADM5_AUX_ATTRIBUTES ) || ( mask & KADM5_LAST_SUCCESS ) || ( mask & KADM5_LAST_FAILED ) || ( mask & KADM5_FAIL_AUTH_COUNT ) ) return KADM5_BAD_MASK ; if ( ( mask & KADM5_KEY_DATA ) && entry -> n_key_data != 0 ) return KADM5_BAD_MASK ; if ( ( mask & KADM5_POLICY ) && entry -> policy == NULL ) return KADM5_BAD_MASK ; if ( ( mask & KADM5_POLICY ) && ( mask & KADM5_POLICY_CLR ) ) return KADM5_BAD_MASK ; if ( ( mask & ~ ALL_PRINC_MASK ) ) <S2SV_StartBug> return KADM5_BAD_MASK ; <S2SV_EndBug> ret = kdb_get_entry ( handle , entry -> principal , & kdb , & adb ) ; switch ( ret ) { case KADM5_UNK_PRINC : break ; case 0 : kdb_free_entry ( handle , kdb , & adb ) ; return KADM5_DUP ; default : return ret ; } kdb = calloc ( 1 , sizeof ( * kdb ) ) ; if ( kdb == NULL ) return ENOMEM ; memset ( & adb , 0 , sizeof ( osa_princ_ent_rec ) ) ; if ( ( mask & KADM5_POLICY ) ) { ret = get_policy ( handle , entry -> policy , & polent , & have_polent ) ; if ( ret ) goto cleanup ; } if ( password ) { ret = passwd_check ( handle , password , have_polent ? & polent : NULL , entry -> principal ) ; if ( ret ) goto cleanup ; } if ( ( ret = krb5_timeofday ( handle -> context , & now ) ) ) goto cleanup ; kdb -> magic = KRB5_KDB_MAGIC_NUMBER ; kdb -> len = KRB5_KDB_V1_BASE_LENGTH ; if ( ( mask & KADM5_ATTRIBUTES ) ) kdb -> attributes = entry -> attributes ; else kdb -> attributes = handle -> params . flags ; if ( ( mask & KADM5_MAX_LIFE ) ) kdb -> max_life = entry -> max_life ; else kdb -> max_life = handle -> params . max_life ; if ( mask & KADM5_MAX_RLIFE ) kdb -> max_renewable_life = entry -> max_renewable_life ; else kdb -> max_renewable_life = handle -> params . max_rlife ; if ( ( mask & KADM5_PRINC_EXPIRE_TIME ) ) kdb -> expiration = entry -> princ_expire_time ; else kdb -> expiration = handle -> params . expiration ; kdb -> pw_expiration = 0 ; if ( have_polent ) { if ( polent . pw_max_life ) kdb -> pw_expiration = ts_incr ( now , polent . pw_max_life ) ; else kdb -> pw_expiration = 0 ; } if ( ( mask & KADM5_PW_EXPIRATION ) ) kdb -> pw_expiration = entry -> pw_expiration ; kdb -> last_success = 0 ; kdb -> last_failed = 0 ; kdb -> fail_auth_count = 0 ; ret = krb5_copy_principal ( handle -> context , entry -> principal , & kdb -> princ ) ; if ( ret ) goto cleanup ; if ( ( ret = krb5_dbe_update_last_pwd_change ( handle -> context , kdb , now ) ) ) goto cleanup ; if ( mask & KADM5_TL_DATA ) { for ( tl_data_tail = entry -> tl_data ; tl_data_tail ; tl_data_tail = tl_data_tail -> tl_data_next ) { ret = krb5_dbe_update_tl_data ( handle -> context , kdb , tl_data_tail ) ; if ( ret ) goto cleanup ; } } ret = apply_keysalt_policy ( handle , entry -> policy , n_ks_tuple , ks_tuple , & new_n_ks_tuple , & new_ks_tuple ) ; if ( ret ) goto cleanup ; ret = kdb_get_active_mkey ( handle , & act_kvno , & act_mkey ) ; if ( ret ) goto cleanup ; if ( mask & KADM5_KEY_DATA ) { assert ( entry -> n_key_data == 0 ) ; } else if ( password ) { ret = krb5_dbe_cpw ( handle -> context , act_mkey , new_ks_tuple , new_n_ks_tuple , password , ( mask & KADM5_KVNO ) ? entry -> kvno : 1 , FALSE , kdb ) ; } else { ret = krb5_dbe_crk ( handle -> context , & master_keyblock , new_ks_tuple , new_n_ks_tuple , FALSE , kdb ) ; } if ( ret ) goto cleanup ; ret = krb5_dbe_update_mkvno ( handle -> context , kdb , act_kvno ) ; if ( ret ) goto cleanup ; ret = k5_kadm5_hook_create ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_PRECOMMIT , entry , mask , new_n_ks_tuple , new_ks_tuple , password ) ; if ( ret ) goto cleanup ; adb . admin_history_kvno = INITIAL_HIST_KVNO ; if ( mask & KADM5_POLICY ) { adb . aux_attributes = KADM5_POLICY ; adb . policy = entry -> policy ; } kdb -> mask = mask | KADM5_KEY_DATA | KADM5_PRINCIPAL ; ret = kdb_put_entry ( handle , kdb , & adb ) ; ( void ) k5_kadm5_hook_create ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_POSTCOMMIT , entry , mask , new_n_ks_tuple , new_ks_tuple , password ) ; cleanup : free ( new_ks_tuple ) ; krb5_db_free_principal ( handle -> context , kdb ) ; if ( have_polent ) ( void ) kadm5_free_policy_ent ( handle -> lhandle , & polent ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return KADM5_BAD_MASK ; if ( mask & KADM5_TL_DATA ) { for ( tl_data_tail = entry -> tl_data ; tl_data_tail != NULL ; tl_data_tail = tl_data_tail -> tl_data_next ) { if ( tl_data_tail -> tl_data_type < 256 ) return KADM5_BAD_TL_TYPE ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4344\n\n```\nCWE-476 static OM_uint32 acc_ctx_cont ( OM_uint32 * minstat , gss_buffer_t buf , gss_ctx_id_t * ctx , gss_buffer_t * responseToken , gss_buffer_t * mechListMIC , OM_uint32 * negState , send_token_flag * return_token ) { OM_uint32 ret , tmpmin ; gss_OID supportedMech ; spnego_gss_ctx_id_t sc ; unsigned int len ; unsigned char * ptr , * bufstart ; sc = ( spnego_gss_ctx_id_t ) * ctx ; ret = GSS_S_DEFECTIVE_TOKEN ; * negState = REJECT ; * minstat = 0 ; supportedMech = GSS_C_NO_OID ; * return_token = ERROR_TOKEN_SEND ; * responseToken = * mechListMIC = GSS_C_NO_BUFFER ; ptr = bufstart = buf -> value ; # define REMAIN ( buf -> length - ( ptr - bufstart ) ) <S2SV_StartBug> if ( REMAIN > INT_MAX ) <S2SV_EndBug> return GSS_S_DEFECTIVE_TOKEN ; if ( * ptr == HEADER_ID ) { ret = g_verify_token_header ( gss_mech_spnego , & len , & ptr , 0 , REMAIN ) ; if ( ret ) { * minstat = ret ; return GSS_S_DEFECTIVE_TOKEN ; } } if ( * ptr != ( CONTEXT | 0x01 ) ) { return GSS_S_DEFECTIVE_TOKEN ; } ret = get_negTokenResp ( minstat , ptr , REMAIN , negState , & supportedMech , responseToken , mechListMIC ) ; if ( ret != GSS_S_COMPLETE ) goto cleanup ; if ( * responseToken == GSS_C_NO_BUFFER && * mechListMIC == GSS_C_NO_BUFFER ) { ret = GSS_S_DEFECTIVE_TOKEN ; goto cleanup ; } if ( supportedMech != GSS_C_NO_OID ) { ret = GSS_S_DEFECTIVE_TOKEN ; goto cleanup ; } sc -> firstpass = 0 ; * negState = ACCEPT_INCOMPLETE ; * return_token = CONT_TOKEN_SEND ; cleanup : if ( supportedMech != GSS_C_NO_OID ) { generic_gss_release_oid ( & tmpmin , & supportedMech ) ; } return ret ; # undef REMAIN }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( REMAIN == 0 || REMAIN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int em_jcxz ( struct x86_emulate_ctxt * ctxt ) <S2SV_StartBug> { <S2SV_EndBug> if ( address_mask ( ctxt , reg_read ( ctxt , VCPU_REGS_RCX ) ) == 0 ) <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> <S2SV_StartBug> return X86EMUL_CONTINUE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt ) { int rc = X86EMUL_CONTINUE ; <S2SV_ModStart> == 0 ) rc = <S2SV_ModStart> ) ; return rc <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 static void findoprnd ( ITEM * ptr , int32 * pos ) <S2SV_StartBug> { <S2SV_EndBug> # ifdef BS_DEBUG elog ( DEBUG3 , ( ptr [ * pos ] . type == OPR ) ? \"%d<S2SV_blank><S2SV_blank>%c\" : \"%d<S2SV_blank><S2SV_blank>%d\" , * pos , ptr [ * pos ] . val ) ; # endif if ( ptr [ * pos ] . type == VAL ) { ptr [ * pos ] . left = 0 ; ( * pos ) -- ; } else if ( ptr [ * pos ] . val == ( int32 ) '!' ) { ptr [ * pos ] . left = - 1 ; ( * pos ) -- ; findoprnd ( ptr , pos ) ; } else { ITEM * curitem = & ptr [ * pos ] ; int32 tmp = * pos ; ( * pos ) -- ; findoprnd ( ptr , pos ) ; curitem -> left = * pos - tmp ; findoprnd ( ptr , pos ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pos ) { check_stack_depth ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-362 static int userfaultfd_unregister ( struct userfaultfd_ctx * ctx , unsigned long arg ) { struct mm_struct * mm = ctx -> mm ; struct vm_area_struct * vma , * prev , * cur ; int ret ; struct uffdio_range uffdio_unregister ; unsigned long new_flags ; bool found ; unsigned long start , end , vma_end ; const void __user * buf = ( void __user * ) arg ; ret = - EFAULT ; if ( copy_from_user ( & uffdio_unregister , buf , sizeof ( uffdio_unregister ) ) ) goto out ; ret = validate_range ( mm , uffdio_unregister . start , uffdio_unregister . len ) ; if ( ret ) goto out ; start = uffdio_unregister . start ; end = start + uffdio_unregister . len ; ret = - ENOMEM ; if ( ! mmget_not_zero ( mm ) ) goto out ; down_write ( & mm -> mmap_sem ) ; <S2SV_StartBug> vma = find_vma_prev ( mm , start , & prev ) ; <S2SV_EndBug> if ( ! vma ) goto out_unlock ; ret = - EINVAL ; if ( vma -> vm_start >= end ) goto out_unlock ; if ( is_vm_hugetlb_page ( vma ) ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( vma ) ; if ( start & ( vma_hpagesize - 1 ) ) goto out_unlock ; } found = false ; ret = - EINVAL ; for ( cur = vma ; cur && cur -> vm_start < end ; cur = cur -> vm_next ) { cond_resched ( ) ; BUG_ON ( ! ! cur -> vm_userfaultfd_ctx . ctx ^ ! ! ( cur -> vm_flags & ( VM_UFFD_MISSING | VM_UFFD_WP ) ) ) ; if ( ! vma_can_userfault ( cur ) ) goto out_unlock ; found = true ; } BUG_ON ( ! found ) ; if ( vma -> vm_start < start ) prev = vma ; ret = 0 ; do { cond_resched ( ) ; BUG_ON ( ! vma_can_userfault ( vma ) ) ; if ( ! vma -> vm_userfaultfd_ctx . ctx ) goto skip ; WARN_ON ( ! ( vma -> vm_flags & VM_MAYWRITE ) ) ; if ( vma -> vm_start > start ) start = vma -> vm_start ; vma_end = min ( end , vma -> vm_end ) ; if ( userfaultfd_missing ( vma ) ) { struct userfaultfd_wake_range range ; range . start = start ; range . len = vma_end - start ; wake_userfault ( vma -> vm_userfaultfd_ctx . ctx , & range ) ; } new_flags = vma -> vm_flags & ~ ( VM_UFFD_MISSING | VM_UFFD_WP ) ; prev = vma_merge ( mm , prev , start , vma_end , new_flags , vma -> anon_vma , vma -> vm_file , vma -> vm_pgoff , vma_policy ( vma ) , NULL_VM_UFFD_CTX ) ; if ( prev ) { vma = prev ; goto next ; } if ( vma -> vm_start < start ) { ret = split_vma ( mm , vma , start , 1 ) ; if ( ret ) break ; } if ( vma -> vm_end > end ) { ret = split_vma ( mm , vma , end , 0 ) ; if ( ret ) break ; } next : vma -> vm_flags = new_flags ; vma -> vm_userfaultfd_ctx = NULL_VM_UFFD_CTX ; skip : prev = vma ; start = vma -> vm_end ; vma = vma -> vm_next ; } while ( vma && vma -> vm_start < end ) ; out_unlock : up_write ( & mm -> mmap_sem ) ; mmput ( mm ) ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mmap_sem ) ; if ( ! mmget_still_valid ( mm ) ) goto out_unlock ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void yv12_extend_frame_left_right_c ( YV12_BUFFER_CONFIG * ybf , unsigned char * y_src , unsigned char * u_src , unsigned char * v_src ) { int i ; unsigned char * src_ptr1 , * src_ptr2 ; unsigned char * dest_ptr1 , * dest_ptr2 ; unsigned int Border ; int plane_stride ; int plane_height ; int plane_width ; Border = ybf -> border ; plane_stride = ybf -> y_stride ; plane_height = 16 ; plane_width = ybf -> y_width ; src_ptr1 = y_src ; src_ptr2 = src_ptr1 + plane_width - 1 ; dest_ptr1 = src_ptr1 - Border ; dest_ptr2 = src_ptr2 + 1 ; for ( i = 0 ; i < plane_height ; i ++ ) { <S2SV_StartBug> vpx_memset ( dest_ptr1 , src_ptr1 [ 0 ] , Border ) ; <S2SV_EndBug> vpx_memset ( dest_ptr2 , src_ptr2 [ 0 ] , Border ) ; src_ptr1 += plane_stride ; src_ptr2 += plane_stride ; dest_ptr1 += plane_stride ; dest_ptr2 += plane_stride ; } plane_stride = ybf -> uv_stride ; plane_height = 8 ; plane_width = ybf -> uv_width ; Border /= 2 ; src_ptr1 = u_src ; src_ptr2 = src_ptr1 + plane_width - 1 ; dest_ptr1 = src_ptr1 - Border ; dest_ptr2 = src_ptr2 + 1 ; for ( i = 0 ; i < plane_height ; i ++ ) { <S2SV_StartBug> vpx_memset ( dest_ptr1 , src_ptr1 [ 0 ] , Border ) ; <S2SV_EndBug> vpx_memset ( dest_ptr2 , src_ptr2 [ 0 ] , Border ) ; src_ptr1 += plane_stride ; src_ptr2 += plane_stride ; dest_ptr1 += plane_stride ; dest_ptr2 += plane_stride ; } src_ptr1 = v_src ; src_ptr2 = src_ptr1 + plane_width - 1 ; dest_ptr1 = src_ptr1 - Border ; dest_ptr2 = src_ptr2 + 1 ; for ( i = 0 ; i < plane_height ; i ++ ) { <S2SV_StartBug> vpx_memset ( dest_ptr1 , src_ptr1 [ 0 ] , Border ) ; <S2SV_EndBug> vpx_memset ( dest_ptr2 , src_ptr2 [ 0 ] , Border ) ; src_ptr1 += plane_stride ; src_ptr2 += plane_stride ; dest_ptr1 += plane_stride ; dest_ptr2 += plane_stride ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memset ( dest_ptr1 , src_ptr1 [ 0 ] , Border ) ; memset <S2SV_ModEnd> ( dest_ptr2 , <S2SV_ModStart> ++ ) { memset ( dest_ptr1 , src_ptr1 [ 0 ] , Border ) ; memset <S2SV_ModEnd> ( dest_ptr2 , <S2SV_ModStart> ++ ) { memset ( dest_ptr1 , src_ptr1 [ 0 ] , Border ) ; memset <S2SV_ModEnd> ( dest_ptr2 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-8428\n\n```\nCWE-416 static int do_last ( struct nameidata * nd , struct file * file , const struct open_flags * op ) { <S2SV_StartBug> struct dentry * dir = nd -> path . dentry ; <S2SV_EndBug> int open_flag = op -> open_flag ; bool will_truncate = ( open_flag & O_TRUNC ) != 0 ; bool got_write = false ; int acc_mode = op -> acc_mode ; unsigned seq ; struct inode * inode ; struct path path ; int error ; nd -> flags &= ~ LOOKUP_PARENT ; nd -> flags |= op -> intent ; if ( nd -> last_type != LAST_NORM ) { error = handle_dots ( nd , nd -> last_type ) ; if ( unlikely ( error ) ) return error ; goto finish_open ; } if ( ! ( open_flag & O_CREAT ) ) { if ( nd -> last . name [ nd -> last . len ] ) nd -> flags |= LOOKUP_FOLLOW | LOOKUP_DIRECTORY ; error = lookup_fast ( nd , & path , & inode , & seq ) ; if ( likely ( error > 0 ) ) goto finish_lookup ; if ( error < 0 ) return error ; BUG_ON ( nd -> inode != dir -> d_inode ) ; BUG_ON ( nd -> flags & LOOKUP_RCU ) ; } else { error = complete_walk ( nd ) ; if ( error ) return error ; audit_inode ( nd -> name , dir , AUDIT_INODE_PARENT ) ; if ( unlikely ( nd -> last . name [ nd -> last . len ] ) ) return - EISDIR ; } if ( open_flag & ( O_CREAT | O_TRUNC | O_WRONLY | O_RDWR ) ) { error = mnt_want_write ( nd -> path . mnt ) ; if ( ! error ) got_write = true ; } if ( open_flag & O_CREAT ) inode_lock ( dir -> d_inode ) ; else inode_lock_shared ( dir -> d_inode ) ; error = lookup_open ( nd , & path , file , op , got_write ) ; if ( open_flag & O_CREAT ) inode_unlock ( dir -> d_inode ) ; else inode_unlock_shared ( dir -> d_inode ) ; if ( error ) goto out ; if ( file -> f_mode & FMODE_OPENED ) { if ( ( file -> f_mode & FMODE_CREATED ) || ! S_ISREG ( file_inode ( file ) -> i_mode ) ) will_truncate = false ; audit_inode ( nd -> name , file -> f_path . dentry , 0 ) ; goto opened ; } if ( file -> f_mode & FMODE_CREATED ) { open_flag &= ~ O_TRUNC ; will_truncate = false ; acc_mode = 0 ; path_to_nameidata ( & path , nd ) ; goto finish_open_created ; } if ( got_write ) { mnt_drop_write ( nd -> path . mnt ) ; got_write = false ; } error = follow_managed ( & path , nd ) ; if ( unlikely ( error < 0 ) ) return error ; audit_inode ( nd -> name , path . dentry , 0 ) ; if ( unlikely ( ( open_flag & ( O_EXCL | O_CREAT ) ) == ( O_EXCL | O_CREAT ) ) ) { path_to_nameidata ( & path , nd ) ; return - EEXIST ; } seq = 0 ; inode = d_backing_inode ( path . dentry ) ; finish_lookup : error = step_into ( nd , & path , 0 , inode , seq ) ; if ( unlikely ( error ) ) return error ; finish_open : error = complete_walk ( nd ) ; if ( error ) return error ; audit_inode ( nd -> name , nd -> path . dentry , 0 ) ; if ( open_flag & O_CREAT ) { error = - EISDIR ; if ( d_is_dir ( nd -> path . dentry ) ) goto out ; <S2SV_StartBug> error = may_create_in_sticky ( dir , <S2SV_EndBug> d_backing_inode ( nd -> path . dentry ) ) ; if ( unlikely ( error ) ) goto out ; } error = - ENOTDIR ; if ( ( nd -> flags & LOOKUP_DIRECTORY ) && ! d_can_lookup ( nd -> path . dentry ) ) goto out ; if ( ! d_is_reg ( nd -> path . dentry ) ) will_truncate = false ; if ( will_truncate ) { error = mnt_want_write ( nd -> path . mnt ) ; if ( error ) goto out ; got_write = true ; } finish_open_created : error = may_open ( & nd -> path , acc_mode , open_flag ) ; if ( error ) goto out ; BUG_ON ( file -> f_mode & FMODE_OPENED ) ; error = vfs_open ( & nd -> path , file ) ; if ( error ) goto out ; opened : error = ima_file_check ( file , op -> acc_mode ) ; if ( ! error && will_truncate ) error = handle_truncate ( file ) ; out : if ( unlikely ( error > 0 ) ) { WARN_ON ( 1 ) ; error = - EINVAL ; } if ( got_write ) mnt_drop_write ( nd -> path . mnt ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> path . dentry ; kuid_t dir_uid = dir -> d_inode -> i_uid ; umode_t dir_mode = dir -> d_inode -> i_mode <S2SV_ModStart> = may_create_in_sticky ( dir_mode , dir_uid <S2SV_ModEnd> , d_backing_inode (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_set_previewpp ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { # if CONFIG_POSTPROC <S2SV_StartBug> vp8_postproc_cfg_t * data = va_arg ( args , vp8_postproc_cfg_t * ) ; <S2SV_EndBug> ( void ) ctr_id ; if ( data ) { ctx -> preview_ppcfg = * ( ( vp8_postproc_cfg_t * ) data ) ; return VPX_CODEC_OK ; } else return VPX_CODEC_INVALID_PARAM ; # else ( void ) ctx ; <S2SV_StartBug> ( void ) ctr_id ; <S2SV_EndBug> ( void ) args ; return VPX_CODEC_INCAPABLE ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args <S2SV_ModStart> vp8_postproc_cfg_t * ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( void ) <S2SV_ModEnd> args ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19083\n\n```\nCWE-401 struct clock_source * dce80_clock_source_create ( struct dc_context * ctx , struct dc_bios * bios , enum clock_source_id id , const struct dce110_clk_src_regs * regs , bool dp_clk_src ) { struct dce110_clk_src * clk_src = kzalloc ( sizeof ( struct dce110_clk_src ) , GFP_KERNEL ) ; if ( ! clk_src ) return NULL ; if ( dce110_clk_src_construct ( clk_src , ctx , bios , id , regs , & cs_shift , & cs_mask ) ) { clk_src -> base . dp_clk_src = dp_clk_src ; return & clk_src -> base ; } <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base ; } kfree ( clk_src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void is_skippable ( int plane , int block , BLOCK_SIZE plane_bsize , TX_SIZE tx_size , void * argv ) { struct is_skippable_args * args = argv ; <S2SV_StartBug> args -> skippable [ 0 ] &= ( ! args -> x -> plane [ plane ] . eobs [ block ] ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = argv ; ( void ) plane ; ( void ) plane_bsize ; ( void ) tx_size ; <S2SV_ModStart> ! args -> <S2SV_ModEnd> eobs [ block\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 SQLITE_PRIVATE VList * sqlite3VListAdd ( sqlite3 * db , VList * pIn , const char * zName , int nName , int iVal ) { int nInt ; char * z ; int i ; nInt = nName / 4 + 3 ; assert ( pIn == 0 || pIn [ 0 ] >= 3 ) ; if ( pIn == 0 || pIn [ 1 ] + nInt > pIn [ 0 ] ) { <S2SV_StartBug> int nAlloc = ( pIn ? pIn [ 0 ] * 2 : 10 ) + nInt ; <S2SV_EndBug> VList * pOut = sqlite3DbRealloc ( db , pIn , nAlloc * sizeof ( int ) ) ; if ( pOut == 0 ) return pIn ; if ( pIn == 0 ) pOut [ 1 ] = 2 ; pIn = pOut ; pIn [ 0 ] = nAlloc ; } i = pIn [ 1 ] ; pIn [ i ] = iVal ; pIn [ i + 1 ] = nInt ; z = ( char * ) & pIn [ i + 2 ] ; pIn [ 1 ] = i + nInt ; assert ( pIn [ 1 ] <= pIn [ 0 ] ) ; memcpy ( z , zName , nName ) ; z [ nName ] = 0 ; return pIn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) { sqlite3_int64 <S2SV_ModEnd> nAlloc = ( <S2SV_ModStart> ( pIn ? 2 * ( sqlite3_int64 ) pIn [ 0 ] <S2SV_ModEnd> : 10 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20542\n\n```\nCWE-119 LIBXSMM_API_INTERN void libxsmm_sparse_csr_reader ( libxsmm_generated_code * io_generated_code , const char * i_csr_file_in , unsigned int * * o_row_idx , unsigned int * * o_column_idx , double * * o_values , unsigned int * o_row_count , unsigned int * o_column_count , unsigned int * o_element_count ) { FILE * l_csr_file_handle ; const unsigned int l_line_length = 512 ; char l_line [ 512 + 1 ] ; unsigned int l_header_read = 0 ; unsigned int * l_row_idx_id = NULL ; unsigned int l_i = 0 ; l_csr_file_handle = fopen ( i_csr_file_in , \"r\" ) ; if ( l_csr_file_handle == NULL ) { LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_INPUT ) ; return ; } while ( fgets ( l_line , l_line_length , l_csr_file_handle ) != NULL ) { if ( strlen ( l_line ) == l_line_length ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_row_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csr_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_READ_LEN ) ; return ; } if ( l_line [ 0 ] == '%' ) { continue ; } else { if ( l_header_read == 0 ) { <S2SV_StartBug> if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%u\" , o_row_count , o_column_count , o_element_count ) == 3 ) { <S2SV_EndBug> * o_column_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_element_count ) ) ; * o_row_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( ( size_t ) ( * o_row_count ) + 1 ) ) ; * o_values = ( double * ) malloc ( sizeof ( double ) * ( * o_element_count ) ) ; l_row_idx_id = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_row_count ) ) ; if ( ( * o_row_idx == NULL ) || ( * o_column_idx == NULL ) || ( * o_values == NULL ) || ( l_row_idx_id == NULL ) ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_row_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csr_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSC_ALLOC_DATA ) ; return ; } memset ( * o_row_idx , 0 , sizeof ( unsigned int ) * ( ( size_t ) ( * o_row_count ) + 1 ) ) ; memset ( * o_column_idx , 0 , sizeof ( unsigned int ) * ( * o_element_count ) ) ; memset ( * o_values , 0 , sizeof ( double ) * ( * o_element_count ) ) ; memset ( l_row_idx_id , 0 , sizeof ( unsigned int ) * ( * o_row_count ) ) ; for ( l_i = 0 ; l_i <= * o_row_count ; ++ l_i ) ( * o_row_idx ) [ l_i ] = ( * o_element_count ) ; ( * o_row_idx ) [ 0 ] = 0 ; l_i = 0 ; l_header_read = 1 ; } else { LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_READ_DESC ) ; fclose ( l_csr_file_handle ) ; return ; } } else { unsigned int l_row = 0 , l_column = 0 ; double l_value = 0 ; if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%lf\" , & l_row , & l_column , & l_value ) != 3 ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_row_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csr_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_READ_ELEMS ) ; return ; } <S2SV_StartBug> l_row -- ; <S2SV_EndBug> l_column -- ; ( * o_column_idx ) [ l_i ] = l_column ; ( * o_values ) [ l_i ] = l_value ; l_i ++ ; l_row_idx_id [ l_row ] = 1 ; ( * o_row_idx ) [ l_row + 1 ] = l_i ; } } } fclose ( l_csr_file_handle ) ; if ( l_i != ( * o_element_count ) ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_row_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_LEN ) ; return ; } if ( l_row_idx_id != NULL ) { for ( l_i = 0 ; l_i < ( * o_row_count ) ; l_i ++ ) { if ( l_row_idx_id [ l_i ] == 0 ) { ( * o_row_idx ) [ l_i + 1 ] = ( * o_row_idx ) [ l_i ] ; } } free ( l_row_idx_id ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( 3 == <S2SV_ModStart> , o_element_count ) && 0 != * o_row_count && 0 != * o_column_count && 0 != * o_element_count ) <S2SV_ModEnd> { * o_column_idx <S2SV_ModStart> return ; } LIBXSMM_ASSERT ( 0 != l_row && 0 != l_column ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2009-3627\n\n```\nCWE-20 EXTERN SV * decode_entities ( pTHX_ SV * sv , HV * entity2char , bool expand_prefix ) { STRLEN len ; char * s = SvPV_force ( sv , len ) ; char * t = s ; char * end = s + len ; char * ent_start ; char * repl ; STRLEN repl_len ; # ifdef UNICODE_HTML_PARSER char buf [ UTF8_MAXLEN ] ; int repl_utf8 ; int high_surrogate = 0 ; # else char buf [ 1 ] ; # endif # if defined ( __GNUC__ ) && defined ( UNICODE_HTML_PARSER ) repl_utf8 = 0 ; # endif while ( s < end ) { assert ( t <= s ) ; if ( ( * t ++ = * s ++ ) != '&' ) continue ; ent_start = s ; repl = 0 ; <S2SV_StartBug> if ( * s == '#' ) { <S2SV_EndBug> UV num = 0 ; UV prev = 0 ; int ok = 0 ; s ++ ; <S2SV_StartBug> if ( * s == 'x' || * s == 'X' ) { <S2SV_EndBug> s ++ ; <S2SV_StartBug> while ( * s ) { <S2SV_EndBug> char * tmp = strchr ( PL_hexdigit , * s ) ; if ( ! tmp ) break ; num = num << 4 | ( ( tmp - PL_hexdigit ) & 15 ) ; if ( prev && num <= prev ) { ok = 0 ; break ; } prev = num ; s ++ ; ok = 1 ; } } else { <S2SV_StartBug> while ( isDIGIT ( * s ) ) { <S2SV_EndBug> num = num * 10 + ( * s - '0' ) ; if ( prev && num < prev ) { ok = 0 ; break ; } prev = num ; s ++ ; ok = 1 ; } } if ( ok ) { # ifdef UNICODE_HTML_PARSER if ( ! SvUTF8 ( sv ) && num <= 255 ) { buf [ 0 ] = ( char ) num ; repl = buf ; repl_len = 1 ; repl_utf8 = 0 ; } else { char * tmp ; if ( ( num & 0xFFFFFC00 ) == 0xDC00 ) { if ( high_surrogate != 0 ) { t -= 3 ; num = ( ( high_surrogate - 0xD800 ) << 10 ) + ( num - 0xDC00 ) + 0x10000 ; high_surrogate = 0 ; } else { num = 0xFFFD ; } } else if ( ( num & 0xFFFFFC00 ) == 0xD800 ) { high_surrogate = num ; num = 0xFFFD ; } else { high_surrogate = 0 ; if ( ( num >= 0xFDD0 && num <= 0xFDEF ) || ( ( num & 0xFFFE ) == 0xFFFE ) || num > 0x10FFFF ) { num = 0xFFFD ; } } tmp = ( char * ) uvuni_to_utf8 ( ( U8 * ) buf , num ) ; repl = buf ; repl_len = tmp - buf ; repl_utf8 = 1 ; } # else if ( num <= 255 ) { buf [ 0 ] = ( char ) num & 0xFF ; repl = buf ; repl_len = 1 ; } # endif } } else { char * ent_name = s ; <S2SV_StartBug> while ( isALNUM ( * s ) ) <S2SV_EndBug> s ++ ; if ( ent_name != s && entity2char ) { SV * * svp ; if ( ( svp = hv_fetch ( entity2char , ent_name , s - ent_name , 0 ) ) || ( * s == ';' && ( svp = hv_fetch ( entity2char , ent_name , s - ent_name + 1 , 0 ) ) ) ) { repl = SvPV ( * svp , repl_len ) ; # ifdef UNICODE_HTML_PARSER repl_utf8 = SvUTF8 ( * svp ) ; # endif } else if ( expand_prefix ) { char * ss = s - 1 ; while ( ss > ent_name ) { svp = hv_fetch ( entity2char , ent_name , ss - ent_name , 0 ) ; if ( svp ) { repl = SvPV ( * svp , repl_len ) ; # ifdef UNICODE_HTML_PARSER repl_utf8 = SvUTF8 ( * svp ) ; # endif s = ss ; break ; } ss -- ; } } } # ifdef UNICODE_HTML_PARSER high_surrogate = 0 ; # endif } if ( repl ) { char * repl_allocated = 0 ; <S2SV_StartBug> if ( * s == ';' ) <S2SV_EndBug> s ++ ; t -- ; # ifdef UNICODE_HTML_PARSER if ( * s != '&' ) { high_surrogate = 0 ; } if ( ! SvUTF8 ( sv ) && repl_utf8 ) { STRLEN before_gap_len = t - SvPVX ( sv ) ; char * before_gap = ( char * ) bytes_to_utf8 ( ( U8 * ) SvPVX ( sv ) , & before_gap_len ) ; STRLEN after_gap_len = end - s ; char * after_gap = ( char * ) bytes_to_utf8 ( ( U8 * ) s , & after_gap_len ) ; sv_setpvn ( sv , before_gap , before_gap_len ) ; sv_catpvn ( sv , after_gap , after_gap_len ) ; SvUTF8_on ( sv ) ; Safefree ( before_gap ) ; Safefree ( after_gap ) ; s = t = SvPVX ( sv ) + before_gap_len ; end = SvPVX ( sv ) + before_gap_len + after_gap_len ; } else if ( SvUTF8 ( sv ) && ! repl_utf8 ) { repl = ( char * ) bytes_to_utf8 ( ( U8 * ) repl , & repl_len ) ; repl_allocated = repl ; } # endif if ( t + repl_len > s ) { grow_gap ( aTHX_ sv , repl_len - ( s - t ) , & t , & s , & end ) ; } while ( repl_len -- ) * t ++ = * repl ++ ; if ( repl_allocated ) Safefree ( repl_allocated ) ; } else { while ( ent_start < s ) * t ++ = * ent_start ++ ; } } * t = '\\\\0' ; SvCUR_set ( sv , t - SvPVX ( sv ) ) ; return sv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( s < end && <S2SV_ModStart> ++ ; if ( s < end && <S2SV_ModStart> == 'X' ) ) <S2SV_ModStart> ; while ( s < end <S2SV_ModEnd> ) { char <S2SV_ModStart> { while ( s < end && <S2SV_ModStart> ; while ( s < end && <S2SV_ModStart> ; if ( s < end &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 mod_ty string_object_to_c_ast ( const char * s , PyObject * filename , int start , PyCompilerFlags * flags , int feature_version , PyArena * arena ) { mod_ty mod ; PyCompilerFlags localflags ; perrdetail err ; int iflags = PARSER_FLAGS ( flags ) ; <S2SV_StartBug> node * n = Ta3Parser_ParseStringObject ( s , filename , <S2SV_EndBug> & _Ta3Parser_Grammar , start , & err , & iflags ) ; if ( flags == NULL ) { localflags . cf_flags = 0 ; flags = & localflags ; } if ( n ) { flags -> cf_flags |= iflags & PyCF_MASK ; mod = Ta3AST_FromNodeObject ( n , flags , filename , feature_version , arena ) ; Ta3Node_Free ( n ) ; } else { err_input ( & err ) ; mod = NULL ; } err_free ( & err ) ; return mod ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; node * n ; if ( feature_version >= 7 ) iflags |= PyPARSE_ASYNC_ALWAYS ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5207\n\n```\nCWE-264 static struct mount * clone_mnt ( struct mount * old , struct dentry * root , int flag ) { struct super_block * sb = old -> mnt . mnt_sb ; struct mount * mnt ; int err ; mnt = alloc_vfsmnt ( old -> mnt_devname ) ; if ( ! mnt ) return ERR_PTR ( - ENOMEM ) ; if ( flag & ( CL_SLAVE | CL_PRIVATE | CL_SHARED_TO_SLAVE ) ) mnt -> mnt_group_id = 0 ; else mnt -> mnt_group_id = old -> mnt_group_id ; if ( ( flag & CL_MAKE_SHARED ) && ! mnt -> mnt_group_id ) { err = mnt_alloc_group_id ( mnt ) ; if ( err ) goto out_free ; } mnt -> mnt . mnt_flags = old -> mnt . mnt_flags & ~ ( MNT_WRITE_HOLD | MNT_MARKED ) ; <S2SV_StartBug> if ( ( flag & CL_UNPRIVILEGED ) && ( mnt -> mnt . mnt_flags & MNT_READONLY ) ) <S2SV_EndBug> mnt -> mnt . mnt_flags |= MNT_LOCK_READONLY ; <S2SV_StartBug> if ( ( flag & CL_UNPRIVILEGED ) && list_empty ( & old -> mnt_expire ) ) <S2SV_EndBug> mnt -> mnt . mnt_flags |= MNT_LOCKED ; atomic_inc ( & sb -> s_active ) ; mnt -> mnt . mnt_sb = sb ; mnt -> mnt . mnt_root = dget ( root ) ; mnt -> mnt_mountpoint = mnt -> mnt . mnt_root ; mnt -> mnt_parent = mnt ; lock_mount_hash ( ) ; list_add_tail ( & mnt -> mnt_instance , & sb -> s_mounts ) ; unlock_mount_hash ( ) ; if ( ( flag & CL_SLAVE ) || ( ( flag & CL_SHARED_TO_SLAVE ) && IS_MNT_SHARED ( old ) ) ) { list_add ( & mnt -> mnt_slave , & old -> mnt_slave_list ) ; mnt -> mnt_master = old ; CLEAR_MNT_SHARED ( mnt ) ; } else if ( ! ( flag & CL_PRIVATE ) ) { if ( ( flag & CL_MAKE_SHARED ) || IS_MNT_SHARED ( old ) ) list_add ( & mnt -> mnt_share , & old -> mnt_share ) ; if ( IS_MNT_SLAVE ( old ) ) list_add ( & mnt -> mnt_slave , & old -> mnt_slave ) ; mnt -> mnt_master = old -> mnt_master ; } if ( flag & CL_MAKE_SHARED ) set_mnt_shared ( mnt ) ; if ( flag & CL_EXPIRE ) { if ( ! list_empty ( & old -> mnt_expire ) ) list_add ( & mnt -> mnt_expire , & old -> mnt_expire ) ; } return mnt ; out_free : mnt_free_id ( mnt ) ; free_vfsmnt ( mnt ) ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> flag & CL_UNPRIVILEGED <S2SV_ModStart> & CL_UNPRIVILEGED ) { mnt -> mnt . mnt_flags |= MNT_LOCK_ATIME ; if <S2SV_ModEnd> ( mnt -> <S2SV_ModStart> mnt_flags & MNT_READONLY <S2SV_ModEnd> ) mnt -> <S2SV_ModStart> ; if ( mnt -> mnt . mnt_flags & MNT_NODEV ) mnt -> mnt . mnt_flags |= MNT_LOCK_NODEV ; if ( mnt -> mnt . mnt_flags & MNT_NOSUID ) mnt -> mnt . mnt_flags |= MNT_LOCK_NOSUID ; if ( mnt -> mnt . mnt_flags & MNT_NOEXEC ) mnt -> mnt . mnt_flags |= MNT_LOCK_NOEXEC ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12209\n\n```\nCWE-200 int pam_sm_authenticate ( pam_handle_t * pamh , int flags , int argc , const char * * argv ) { struct passwd * pw = NULL , pw_s ; const char * user = NULL ; cfg_t cfg_st ; cfg_t * cfg = & cfg_st ; char buffer [ BUFSIZE ] ; char * buf = NULL ; char * authfile_dir ; size_t authfile_dir_len ; int pgu_ret , gpn_ret ; int retval = PAM_IGNORE ; device_t * devices = NULL ; unsigned n_devices = 0 ; <S2SV_StartBug> int openasuser ; <S2SV_EndBug> int should_free_origin = 0 ; int should_free_appid = 0 ; int should_free_auth_file = 0 ; <S2SV_StartBug> int should_free_authpending_file = 0 ; <S2SV_EndBug> parse_cfg ( flags , argc , argv , cfg ) ; if ( ! cfg -> origin ) { strcpy ( buffer , DEFAULT_ORIGIN_PREFIX ) ; if ( gethostname ( buffer + strlen ( DEFAULT_ORIGIN_PREFIX ) , BUFSIZE - strlen ( DEFAULT_ORIGIN_PREFIX ) ) == - 1 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>host<S2SV_blank>name\" ) ; goto done ; } DBG ( \"Origin<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>using<S2SV_blank>\\\\\"%s\\\\\"\" , buffer ) ; cfg -> origin = strdup ( buffer ) ; if ( ! cfg -> origin ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto done ; } else { should_free_origin = 1 ; } } if ( ! cfg -> appid ) { DBG ( \"Appid<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>using<S2SV_blank>the<S2SV_blank>same<S2SV_blank>value<S2SV_blank>of<S2SV_blank>origin<S2SV_blank>(%s)\" , cfg -> origin ) ; cfg -> appid = strdup ( cfg -> origin ) ; if ( ! cfg -> appid ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) goto done ; } else { should_free_appid = 1 ; } } if ( cfg -> max_devs == 0 ) { DBG ( \"Maximum<S2SV_blank>devices<S2SV_blank>number<S2SV_blank>not<S2SV_blank>set.<S2SV_blank>Using<S2SV_blank>default<S2SV_blank>(%d)\" , MAX_DEVS ) ; cfg -> max_devs = MAX_DEVS ; } devices = malloc ( sizeof ( device_t ) * cfg -> max_devs ) ; if ( ! devices ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } pgu_ret = pam_get_user ( pamh , & user , NULL ) ; if ( pgu_ret != PAM_SUCCESS || user == NULL ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>access<S2SV_blank>user<S2SV_blank>%s\" , user ) ; retval = PAM_CONV_ERR ; goto done ; } DBG ( \"Requesting<S2SV_blank>authentication<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\" , user ) ; gpn_ret = getpwnam_r ( user , & pw_s , buffer , sizeof ( buffer ) , & pw ) ; if ( gpn_ret != 0 || pw == NULL || pw -> pw_dir == NULL || pw -> pw_dir [ 0 ] != '/' ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>credentials<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s,<S2SV_blank>(%s)\" , user , strerror ( errno ) ) ; retval = PAM_USER_UNKNOWN ; goto done ; } DBG ( \"Found<S2SV_blank>user<S2SV_blank>%s\" , user ) ; DBG ( \"Home<S2SV_blank>directory<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>%s\" , user , pw -> pw_dir ) ; if ( ! cfg -> auth_file ) { buf = NULL ; authfile_dir = secure_getenv ( DEFAULT_AUTHFILE_DIR_VAR ) ; if ( ! authfile_dir ) { DBG ( \"Variable<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>set.<S2SV_blank>Using<S2SV_blank>default<S2SV_blank>value<S2SV_blank>($HOME/.config/)\" , DEFAULT_AUTHFILE_DIR_VAR ) ; authfile_dir_len = strlen ( pw -> pw_dir ) + strlen ( \"/.config\" ) + strlen ( DEFAULT_AUTHFILE ) + 1 ; buf = malloc ( sizeof ( char ) * ( authfile_dir_len ) ) ; if ( ! buf ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } <S2SV_StartBug> snprintf ( buf , authfile_dir_len , <S2SV_EndBug> \"%s/.config%s\" , pw -> pw_dir , DEFAULT_AUTHFILE ) ; } else { DBG ( \"Variable<S2SV_blank>%s<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%s\" , DEFAULT_AUTHFILE_DIR_VAR , authfile_dir ) ; authfile_dir_len = strlen ( authfile_dir ) + strlen ( DEFAULT_AUTHFILE ) + 1 ; buf = malloc ( sizeof ( char ) * ( authfile_dir_len ) ) ; if ( ! buf ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } snprintf ( buf , authfile_dir_len , \"%s%s\" , authfile_dir , DEFAULT_AUTHFILE ) ; <S2SV_StartBug> } <S2SV_EndBug> DBG ( \"Using<S2SV_blank>default<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , buf ) ; <S2SV_StartBug> cfg -> auth_file = buf ; <S2SV_EndBug> should_free_auth_file = 1 ; buf = NULL ; } else { DBG ( \"Using<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , cfg -> auth_file ) ; } <S2SV_StartBug> openasuser = geteuid ( ) == 0 && cfg -> openasuser ; <S2SV_EndBug> <S2SV_StartBug> if ( openasuser ) { <S2SV_EndBug> <S2SV_StartBug> if ( seteuid ( pw_s . pw_uid ) ) { <S2SV_EndBug> <S2SV_StartBug> DBG ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>user<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw_s . pw_uid ) ; <S2SV_EndBug> retval = PAM_IGNORE ; goto done ; } <S2SV_StartBug> DBG ( \"Switched<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw_s . pw_uid ) ; <S2SV_EndBug> } retval = get_devices_from_authfile ( cfg -> auth_file , user , cfg -> max_devs , cfg -> debug , cfg -> debug_file , devices , & n_devices ) ; if ( openasuser ) { <S2SV_StartBug> if ( seteuid ( 0 ) ) { <S2SV_EndBug> DBG ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>0\" ) ; retval = PAM_IGNORE ; goto done ; } <S2SV_StartBug> DBG ( \"Switched<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>0\" ) ; <S2SV_EndBug> } if ( retval != 1 ) { n_devices = 0 ; } if ( n_devices == 0 ) { if ( cfg -> nouserok ) { DBG ( \"Found<S2SV_blank>no<S2SV_blank>devices<S2SV_blank>but<S2SV_blank>nouserok<S2SV_blank>specified.<S2SV_blank>Skipping<S2SV_blank>authentication\" ) ; retval = PAM_SUCCESS ; goto done ; } else if ( retval != 1 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>devices<S2SV_blank>from<S2SV_blank>file<S2SV_blank>%s\" , cfg -> auth_file ) ; retval = PAM_AUTHINFO_UNAVAIL ; goto done ; } else { DBG ( \"Found<S2SV_blank>no<S2SV_blank>devices.<S2SV_blank>Aborting.\" ) ; retval = PAM_AUTHINFO_UNAVAIL ; goto done ; } } if ( ! cfg -> authpending_file ) { int actual_size = snprintf ( buffer , BUFSIZE , DEFAULT_AUTHPENDING_FILE_PATH , getuid ( ) ) ; if ( actual_size >= 0 && actual_size < BUFSIZE ) { cfg -> authpending_file = strdup ( buffer ) ; } if ( ! cfg -> authpending_file ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>the<S2SV_blank>authpending_file,<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications<S2SV_blank>will<S2SV_blank>not<S2SV_blank>be<S2SV_blank>emitted\" ) ; } else { should_free_authpending_file = 1 ; } } else { if ( strlen ( cfg -> authpending_file ) == 0 ) { DBG ( \"authpending_file<S2SV_blank>is<S2SV_blank>set<S2SV_blank>to<S2SV_blank>an<S2SV_blank>empty<S2SV_blank>value,<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications<S2SV_blank>will<S2SV_blank>be<S2SV_blank>disabled\" ) ; cfg -> authpending_file = NULL ; } } int authpending_file_descriptor = - 1 ; if ( cfg -> authpending_file ) { DBG ( \"Using<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>for<S2SV_blank>emitting<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications\" , cfg -> authpending_file ) ; authpending_file_descriptor = open ( cfg -> authpending_file , O_RDONLY | O_CREAT | O_CLOEXEC | O_NOFOLLOW | O_NOCTTY , 0664 ) ; if ( authpending_file_descriptor < 0 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>emit<S2SV_blank>\\'authentication<S2SV_blank>started\\'<S2SV_blank>notification<S2SV_blank>by<S2SV_blank>opening<S2SV_blank>the<S2SV_blank>file<S2SV_blank>\\'%s\\',<S2SV_blank>(%s)\" , cfg -> authpending_file , strerror ( errno ) ) ; } } if ( cfg -> manual == 0 ) { if ( cfg -> interactive ) { converse ( pamh , PAM_PROMPT_ECHO_ON , cfg -> prompt != NULL ? cfg -> prompt : DEFAULT_PROMPT ) ; } retval = do_authentication ( cfg , devices , n_devices , pamh ) ; } else { retval = do_manual_authentication ( cfg , devices , n_devices , pamh ) ; } if ( authpending_file_descriptor >= 0 ) { if ( close ( authpending_file_descriptor ) < 0 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>emit<S2SV_blank>\\'authentication<S2SV_blank>stopped\\'<S2SV_blank>notification<S2SV_blank>by<S2SV_blank>closing<S2SV_blank>the<S2SV_blank>file<S2SV_blank>\\'%s\\',<S2SV_blank>(%s)\" , cfg -> authpending_file , strerror ( errno ) ) ; } } if ( retval != 1 ) { DBG ( \"do_authentication<S2SV_blank>returned<S2SV_blank>%d\" , retval ) ; retval = PAM_AUTH_ERR ; goto done ; } retval = PAM_SUCCESS ; done : free_devices ( devices , n_devices ) ; if ( buf ) { free ( buf ) ; buf = NULL ; } if ( should_free_origin ) { free ( ( char * ) cfg -> origin ) ; cfg -> origin = NULL ; } if ( should_free_appid ) { free ( ( char * ) cfg -> appid ) ; cfg -> appid = NULL ; } if ( should_free_auth_file ) { free ( ( char * ) cfg -> auth_file ) ; cfg -> auth_file = NULL ; } if ( should_free_authpending_file ) { free ( ( char * ) cfg -> authpending_file ) ; cfg -> authpending_file = NULL ; } if ( cfg -> alwaysok && retval != PAM_SUCCESS ) { DBG ( \"alwaysok<S2SV_blank>needed<S2SV_blank>(otherwise<S2SV_blank>return<S2SV_blank>with<S2SV_blank>%d)\" , retval ) ; retval = PAM_SUCCESS ; } DBG ( \"done.<S2SV_blank>[%s]\" , pam_strerror ( pamh , retval ) ) ; if ( cfg -> is_custom_debug_file ) { fclose ( cfg -> debug_file ) ; } return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int openasuser = 0 <S2SV_ModStart> should_free_authpending_file = 0 ; PAM_MODUTIL_DEF_PRIVS ( privs ) <S2SV_ModStart> done ; } openasuser = geteuid ( ) == 0 ? 1 : 0 ; <S2SV_ModStart> DEFAULT_AUTHFILE ) ; if ( ! openasuser ) { DBG ( \"WARNING:<S2SV_blank>not<S2SV_blank>dropping<S2SV_blank>privileges<S2SV_blank>when<S2SV_blank>reading<S2SV_blank>%s,<S2SV_blank>please<S2SV_blank>\" \"consider<S2SV_blank>setting<S2SV_blank>openasuser=1<S2SV_blank>in<S2SV_blank>the<S2SV_blank>module<S2SV_blank>configuration\" <S2SV_ModEnd> , buf ) <S2SV_ModStart> buf ) ; } } DBG ( \"Using<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , buf ) ; <S2SV_ModStart> ) ; } if ( ! openasuser ) { openasuser <S2SV_ModEnd> = geteuid ( <S2SV_ModStart> -> openasuser ; } <S2SV_ModStart> openasuser ) { DBG ( \"Dropping<S2SV_blank>privileges\" ) ; if ( pam_modutil_drop_priv ( pamh , & privs , pw <S2SV_ModEnd> ) ) { <S2SV_ModStart> ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>user<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw -> <S2SV_ModEnd> pw_uid ) ; <S2SV_ModStart> ( \"Switched<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw -> <S2SV_ModEnd> pw_uid ) ; <S2SV_ModStart> { if ( pam_modutil_regain_priv ( pamh , & privs ) ) { DBG ( \"could<S2SV_blank>not<S2SV_blank>restore<S2SV_blank>privileges\" <S2SV_ModEnd> ) ; retval <S2SV_ModStart> } DBG ( \"Restored<S2SV_blank>privileges\" <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14169\n\n```\nCWE-20 static int mxf_read_primer_pack ( void * arg , AVIOContext * pb , int tag , int size , UID uid , int64_t klv_offset ) { MXFContext * mxf = arg ; int item_num = avio_rb32 ( pb ) ; int item_len = avio_rb32 ( pb ) ; if ( item_len != 18 ) { avpriv_request_sample ( pb , \"Primer<S2SV_blank>pack<S2SV_blank>item<S2SV_blank>length<S2SV_blank>%d\" , item_len ) ; return AVERROR_PATCHWELCOME ; } <S2SV_StartBug> if ( item_num > 65536 ) { <S2SV_EndBug> av_log ( mxf -> fc , AV_LOG_ERROR , \"item_num<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\\\\n\" , item_num ) ; return AVERROR_INVALIDDATA ; } if ( mxf -> local_tags ) av_log ( mxf -> fc , AV_LOG_VERBOSE , \"Multiple<S2SV_blank>primer<S2SV_blank>packs\\\\n\" ) ; av_free ( mxf -> local_tags ) ; mxf -> local_tags_count = 0 ; mxf -> local_tags = av_calloc ( item_num , item_len ) ; if ( ! mxf -> local_tags ) return AVERROR ( ENOMEM ) ; mxf -> local_tags_count = item_num ; avio_read ( pb , mxf -> local_tags , item_num * item_len ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> item_num > 65536 || item_num < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3183\n\n```\nCWE-125 int imagetobmp ( opj_image_t * image , const char * outfile ) { int w , h ; int i , pad ; FILE * fdest = NULL ; int adjustR , adjustG , adjustB ; if ( image -> comps [ 0 ] . prec < 8 ) { fprintf ( stderr , \"Unsupported<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components:<S2SV_blank>%d\\\\n\" , image -> comps [ 0 ] . prec ) ; return 1 ; } if ( image -> numcomps >= 3 && image -> comps [ 0 ] . dx == image -> comps [ 1 ] . dx && image -> comps [ 1 ] . dx == image -> comps [ 2 ] . dx && image -> comps [ 0 ] . dy == image -> comps [ 1 ] . dy && image -> comps [ 1 ] . dy == image -> comps [ 2 ] . dy && image -> comps [ 0 ] . prec == image -> comps [ 1 ] . prec && image -> comps [ 1 ] . prec == image -> comps [ 2 ] . prec ) { fdest = fopen ( outfile , \"wb\" ) ; if ( ! fdest ) { fprintf ( stderr , \"ERROR<S2SV_blank>-><S2SV_blank>failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\\\\n\" , outfile ) ; return 1 ; } w = ( int ) image -> comps [ 0 ] . w ; h = ( int ) image -> comps [ 0 ] . h ; fprintf ( fdest , \"BM\" ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( h * w * 3 + 3 * h * ( w % 2 ) + 54 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) + 54 ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) + 54 ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) + 54 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 54 ) & 0xff , ( ( 54 ) >> 8 ) & 0xff , ( ( 54 ) >> 16 ) & 0xff , ( ( 54 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 40 ) & 0xff , ( ( 40 ) >> 8 ) & 0xff , ( ( 40 ) >> 16 ) & 0xff , ( ( 40 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( ( w ) & 0xff ) , ( OPJ_UINT8 ) ( ( w ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( w ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( w ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( ( h ) & 0xff ) , ( OPJ_UINT8 ) ( ( h ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c\" , ( 1 ) & 0xff , ( ( 1 ) >> 8 ) & 0xff ) ; fprintf ( fdest , \"%c%c\" , ( 24 ) & 0xff , ( ( 24 ) >> 8 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( 3 * h * w + 3 * h * ( w % 2 ) ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 7834 ) & 0xff , ( ( 7834 ) >> 8 ) & 0xff , ( ( 7834 ) >> 16 ) & 0xff , ( ( 7834 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 7834 ) & 0xff , ( ( 7834 ) >> 8 ) & 0xff , ( ( 7834 ) >> 16 ) & 0xff , ( ( 7834 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; if ( image -> comps [ 0 ] . prec > 8 ) { adjustR = ( int ) image -> comps [ 0 ] . prec - 8 ; printf ( \"BMP<S2SV_blank>CONVERSION:<S2SV_blank>Truncating<S2SV_blank>component<S2SV_blank>0<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>bits<S2SV_blank>to<S2SV_blank>8<S2SV_blank>bits\\\\n\" , image -> comps [ 0 ] . prec ) ; } else adjustR = 0 ; if ( image -> comps [ 1 ] . prec > 8 ) { adjustG = ( int ) image -> comps [ 1 ] . prec - 8 ; printf ( \"BMP<S2SV_blank>CONVERSION:<S2SV_blank>Truncating<S2SV_blank>component<S2SV_blank>1<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>bits<S2SV_blank>to<S2SV_blank>8<S2SV_blank>bits\\\\n\" , image -> comps [ 1 ] . prec ) ; } else adjustG = 0 ; if ( image -> comps [ 2 ] . prec > 8 ) { adjustB = ( int ) image -> comps [ 2 ] . prec - 8 ; printf ( \"BMP<S2SV_blank>CONVERSION:<S2SV_blank>Truncating<S2SV_blank>component<S2SV_blank>2<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>bits<S2SV_blank>to<S2SV_blank>8<S2SV_blank>bits\\\\n\" , image -> comps [ 2 ] . prec ) ; } else adjustB = 0 ; for ( i = 0 ; i < w * h ; i ++ ) { OPJ_UINT8 rc , gc , bc ; int r , g , b ; r = image -> comps [ 0 ] . data [ w * h - ( ( i ) / ( w ) + 1 ) * w + ( i ) % ( w ) ] ; r += ( image -> comps [ 0 ] . sgnd ? 1 << ( image -> comps [ 0 ] . prec - 1 ) : 0 ) ; r = ( ( r >> adjustR ) + ( ( r >> ( adjustR - 1 ) ) % 2 ) ) ; if ( r > 255 ) r = 255 ; else if ( r < 0 ) r = 0 ; rc = ( OPJ_UINT8 ) r ; g = image -> comps [ 1 ] . data [ w * h - ( ( i ) / ( w ) + 1 ) * w + ( i ) % ( w ) ] ; g += ( image -> comps [ 1 ] . sgnd ? 1 << ( image -> comps [ 1 ] . prec - 1 ) : 0 ) ; g = ( ( g >> adjustG ) + ( ( g >> ( adjustG - 1 ) ) % 2 ) ) ; if ( g > 255 ) g = 255 ; else if ( g < 0 ) g = 0 ; gc = ( OPJ_UINT8 ) g ; b = image -> comps [ 2 ] . data [ w * h - ( ( i ) / ( w ) + 1 ) * w + ( i ) % ( w ) ] ; b += ( image -> comps [ 2 ] . sgnd ? 1 << ( image -> comps [ 2 ] . prec - 1 ) : 0 ) ; b = ( ( b >> adjustB ) + ( ( b >> ( adjustB - 1 ) ) % 2 ) ) ; if ( b > 255 ) b = 255 ; else if ( b < 0 ) b = 0 ; bc = ( OPJ_UINT8 ) b ; fprintf ( fdest , \"%c%c%c\" , bc , gc , rc ) ; if ( ( i + 1 ) % w == 0 ) { for ( pad = ( ( 3 * w ) % 4 ) ? ( 4 - ( 3 * w ) % 4 ) : 0 ; pad > 0 ; pad -- ) fprintf ( fdest , \"%c\" , 0 ) ; } } fclose ( fdest ) ; } else { fdest = fopen ( outfile , \"wb\" ) ; if ( ! fdest ) { fprintf ( stderr , \"ERROR<S2SV_blank>-><S2SV_blank>failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\\\\n\" , outfile ) ; return 1 ; } w = ( int ) image -> comps [ 0 ] . w ; h = ( int ) image -> comps [ 0 ] . h ; fprintf ( fdest , \"BM\" ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( h * w + 54 + 1024 + h * ( w % 2 ) ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + 54 + 1024 + h * ( w % 2 ) ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + 54 + 1024 + h * ( w % 2 ) ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + 54 + 1024 + w * ( w % 2 ) ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 54 + 1024 ) & 0xff , ( ( 54 + 1024 ) >> 8 ) & 0xff , ( ( 54 + 1024 ) >> 16 ) & 0xff , ( ( 54 + 1024 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 40 ) & 0xff , ( ( 40 ) >> 8 ) & 0xff , ( ( 40 ) >> 16 ) & 0xff , ( ( 40 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( ( w ) & 0xff ) , ( OPJ_UINT8 ) ( ( w ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( w ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( w ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( ( h ) & 0xff ) , ( OPJ_UINT8 ) ( ( h ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c\" , ( 1 ) & 0xff , ( ( 1 ) >> 8 ) & 0xff ) ; fprintf ( fdest , \"%c%c\" , ( 8 ) & 0xff , ( ( 8 ) >> 8 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( h * w + h * ( w % 2 ) ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + h * ( w % 2 ) ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + h * ( w % 2 ) ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + h * ( w % 2 ) ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 7834 ) & 0xff , ( ( 7834 ) >> 8 ) & 0xff , ( ( 7834 ) >> 16 ) & 0xff , ( ( 7834 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 7834 ) & 0xff , ( ( 7834 ) >> 8 ) & 0xff , ( ( 7834 ) >> 16 ) & 0xff , ( ( 7834 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 256 ) & 0xff , ( ( 256 ) >> 8 ) & 0xff , ( ( 256 ) >> 16 ) & 0xff , ( ( 256 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 256 ) & 0xff , ( ( 256 ) >> 8 ) & 0xff , ( ( 256 ) >> 16 ) & 0xff , ( ( 256 ) >> 24 ) & 0xff ) ; if ( image -> comps [ 0 ] . prec > 8 ) { adjustR = ( int ) image -> comps [ 0 ] . prec - 8 ; printf ( \"BMP<S2SV_blank>CONVERSION:<S2SV_blank>Truncating<S2SV_blank>component<S2SV_blank>0<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>bits<S2SV_blank>to<S2SV_blank>8<S2SV_blank>bits\\\\n\" , image -> comps [ 0 ] . prec ) ; } else adjustR = 0 ; for ( i = 0 ; i < 256 ; i ++ ) { fprintf ( fdest , \"%c%c%c%c\" , i , i , i , 0 ) ; } for ( i = 0 ; i < w * h ; i ++ ) { int r ; r = image -> comps [ 0 ] . data [ w * h - ( ( i ) / ( w ) + 1 ) * w + ( i ) % ( w ) ] ; r += ( image -> comps [ 0 ] . sgnd ? 1 << ( image -> comps [ 0 ] . prec - 1 ) : 0 ) ; r = ( ( r >> adjustR ) + ( ( r >> ( adjustR - 1 ) ) % 2 ) ) ; if ( r > 255 ) r = 255 ; else if ( r < 0 ) r = 0 ; fprintf ( fdest , \"%c\" , ( OPJ_UINT8 ) r ) ; if ( ( i + 1 ) % w == 0 ) { <S2SV_StartBug> for ( ( pad = w % 4 ) ? ( 4 - w % 4 ) : 0 ; pad > 0 ; pad -- ) <S2SV_EndBug> fprintf ( fdest , \"%c\" , 0 ) ; } } fclose ( fdest ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { for ( pad = ( <S2SV_ModEnd> w % 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12973\n\n```\nCWE-400 static OPJ_BOOL bmp_read_rle8_data ( FILE * IN , OPJ_UINT8 * pData , OPJ_UINT32 stride , OPJ_UINT32 width , OPJ_UINT32 height ) { <S2SV_StartBug> OPJ_UINT32 x , y ; <S2SV_EndBug> OPJ_UINT8 * pix ; const OPJ_UINT8 * beyond ; beyond = pData + stride * height ; pix = pData ; <S2SV_StartBug> x = y = 0U ; <S2SV_EndBug> while ( y < height ) { int c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } if ( c ) { int j , c1_int ; OPJ_UINT8 c1 ; c1_int = getc ( IN ) ; if ( c1_int == EOF ) { return OPJ_FALSE ; } c1 = ( OPJ_UINT8 ) c1_int ; for ( j = 0 ; ( j < c ) && ( x < width ) && ( ( OPJ_SIZE_T ) pix < ( OPJ_SIZE_T ) beyond ) ; j ++ , x ++ , pix ++ ) { <S2SV_StartBug> * pix = c1 ; <S2SV_EndBug> } } else { c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } if ( c == 0x00 ) { x = 0 ; ++ y ; pix = pData + y * stride + x ; } else if ( c == 0x01 ) { break ; } else if ( c == 0x02 ) { c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } x += ( OPJ_UINT32 ) c ; c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } y += ( OPJ_UINT32 ) c ; pix = pData + y * stride + x ; } else { int j ; for ( j = 0 ; ( j < c ) && ( x < width ) && ( ( OPJ_SIZE_T ) pix < ( OPJ_SIZE_T ) beyond ) ; j ++ , x ++ , pix ++ ) { int c1_int ; OPJ_UINT8 c1 ; c1_int = getc ( IN ) ; if ( c1_int == EOF ) { return OPJ_FALSE ; } c1 = ( OPJ_UINT8 ) c1_int ; * pix = c1 ; <S2SV_StartBug> } <S2SV_EndBug> if ( ( OPJ_UINT32 ) c & 1U ) { c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } } } } } <S2SV_StartBug> return OPJ_TRUE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x , y , written <S2SV_ModStart> = y = written = <S2SV_ModStart> pix = c1 ; written ++ <S2SV_ModStart> = c1 ; written ++ ; <S2SV_ModStart> } } } if ( written != width * height ) { fprintf ( stderr , \"warning,<S2SV_blank>image\\'s<S2SV_blank>actual<S2SV_blank>size<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>advertized<S2SV_blank>one\\\\n\" ) ; return OPJ_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-30218\n\n```\nCWE-476 int writefile ( const char * name , struct string * s ) { FILE * f ; int ret ; f = fopen ( name , \"w\" ) ; if ( ! f ) { warn ( \"open<S2SV_blank>%s:\" , name ) ; return - 1 ; } ret = 0 ; <S2SV_StartBug> if ( fwrite ( s -> s , 1 , s -> n , f ) != s -> n || fflush ( f ) != 0 ) { <S2SV_EndBug> warn ( \"write<S2SV_blank>%s:\" , name ) ; ret = - 1 ; } fclose ( f ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( s && ( <S2SV_ModStart> ) != 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 SNDFILE * sf_open_virtual ( SF_VIRTUAL_IO * sfvirtual , int mode , SF_INFO * sfinfo , void * user_data ) { SF_PRIVATE * psf ; if ( sfvirtual -> get_filelen == NULL || sfvirtual -> seek == NULL || sfvirtual -> tell == NULL ) { sf_errno = SFE_BAD_VIRTUAL_IO ; snprintf ( sf_parselog , sizeof ( sf_parselog ) , \"Bad<S2SV_blank>vio_get_filelen<S2SV_blank>/<S2SV_blank>vio_seek<S2SV_blank>/<S2SV_blank>vio_tell<S2SV_blank>in<S2SV_blank>SF_VIRTUAL_IO<S2SV_blank>struct.\\\\n\" ) ; return NULL ; } ; if ( ( mode == SFM_READ || mode == SFM_RDWR ) && sfvirtual -> read == NULL ) { sf_errno = SFE_BAD_VIRTUAL_IO ; snprintf ( sf_parselog , sizeof ( sf_parselog ) , \"Bad<S2SV_blank>vio_read<S2SV_blank>in<S2SV_blank>SF_VIRTUAL_IO<S2SV_blank>struct.\\\\n\" ) ; return NULL ; } ; if ( ( mode == SFM_WRITE || mode == SFM_RDWR ) && sfvirtual -> write == NULL ) { sf_errno = SFE_BAD_VIRTUAL_IO ; snprintf ( sf_parselog , sizeof ( sf_parselog ) , \"Bad<S2SV_blank>vio_write<S2SV_blank>in<S2SV_blank>SF_VIRTUAL_IO<S2SV_blank>struct.\\\\n\" ) ; return NULL ; } ; <S2SV_StartBug> if ( ( psf = calloc ( 1 , sizeof ( SF_PRIVATE ) ) ) == NULL ) <S2SV_EndBug> { sf_errno = SFE_MALLOC_FAILED ; return NULL ; } ; psf_init_files ( psf ) ; psf -> virtual_io = SF_TRUE ; psf -> vio = * sfvirtual ; psf -> vio_user_data = user_data ; psf -> file . mode = mode ; return psf_open_file ( psf , sfinfo ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( psf = psf_allocate ( <S2SV_ModEnd> ) ) ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7613\n\n```\nCWE-362 static int newque ( struct ipc_namespace * ns , struct ipc_params * params ) { struct msg_queue * msq ; int id , retval ; key_t key = params -> key ; int msgflg = params -> flg ; msq = ipc_rcu_alloc ( sizeof ( * msq ) ) ; if ( ! msq ) return - ENOMEM ; msq -> q_perm . mode = msgflg & S_IRWXUGO ; msq -> q_perm . key = key ; msq -> q_perm . security = NULL ; retval = security_msg_queue_alloc ( msq ) ; if ( retval ) { ipc_rcu_putref ( msq , ipc_rcu_free ) ; return retval ; } <S2SV_StartBug> id = ipc_addid ( & msg_ids ( ns ) , & msq -> q_perm , ns -> msg_ctlmni ) ; <S2SV_EndBug> if ( id < 0 ) { ipc_rcu_putref ( msq , msg_rcu_free ) ; return id ; } <S2SV_StartBug> msq -> q_stime = msq -> q_rtime = 0 ; <S2SV_EndBug> msq -> q_ctime = get_seconds ( ) ; msq -> q_cbytes = msq -> q_qnum = 0 ; msq -> q_qbytes = ns -> msg_ctlmnb ; msq -> q_lspid = msq -> q_lrpid = 0 ; INIT_LIST_HEAD ( & msq -> q_messages ) ; INIT_LIST_HEAD ( & msq -> q_receivers ) ; INIT_LIST_HEAD ( & msq -> q_senders ) ; ipc_unlock_object ( & msq -> q_perm ) ; rcu_read_unlock ( ) ; return msq -> q_perm . id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> retval ; } msq -> q_stime = msq -> q_rtime = 0 ; msq -> q_ctime = get_seconds ( ) ; msq -> q_cbytes = msq -> q_qnum = 0 ; msq -> q_qbytes = ns -> msg_ctlmnb ; msq -> q_lspid = msq -> q_lrpid = 0 ; INIT_LIST_HEAD ( & msq -> q_messages ) ; INIT_LIST_HEAD ( & msq -> q_receivers ) ; INIT_LIST_HEAD ( & msq -> q_senders ) ; <S2SV_ModStart> id ; } <S2SV_ModEnd> ipc_unlock_object ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void write_interp_filter ( INTERP_FILTER filter , <S2SV_StartBug> struct vp9_write_bit_buffer * wb ) { <S2SV_EndBug> const int filter_to_literal [ ] = { 1 , 0 , 2 , 3 } ; <S2SV_StartBug> vp9_wb_write_bit ( wb , filter == SWITCHABLE ) ; <S2SV_EndBug> if ( filter != SWITCHABLE ) <S2SV_StartBug> vp9_wb_write_literal ( wb , filter_to_literal [ filter ] , 2 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filter , struct vpx_write_bit_buffer <S2SV_ModEnd> * wb ) <S2SV_ModStart> 3 } ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> != SWITCHABLE ) vpx_wb_write_literal <S2SV_ModEnd> ( wb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void read_switchable_interp_probs ( FRAME_CONTEXT * fc , vp9_reader * r ) { <S2SV_EndBug> int i , j ; for ( j = 0 ; j < SWITCHABLE_FILTER_CONTEXTS ; ++ j ) for ( i = 0 ; i < SWITCHABLE_FILTERS - 1 ; ++ i ) vp9_diff_update_prob ( r , & fc -> switchable_interp_prob [ j ] [ i ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * fc , vpx_reader <S2SV_ModEnd> * r )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8887\n\n```\nCWE-476 jp2_box_t * jp2_box_get ( jas_stream_t * in ) { jp2_box_t * box ; jp2_boxinfo_t * boxinfo ; jas_stream_t * tmpstream ; uint_fast32_t len ; uint_fast64_t extlen ; bool dataflag ; box = 0 ; tmpstream = 0 ; if ( ! ( box = jas_malloc ( sizeof ( jp2_box_t ) ) ) ) { goto error ; } box -> ops = & jp2_boxinfo_unk . ops ; if ( jp2_getuint32 ( in , & len ) || jp2_getuint32 ( in , & box -> type ) ) { goto error ; } boxinfo = jp2_boxinfolookup ( box -> type ) ; box -> info = boxinfo ; box -> ops = & boxinfo -> ops ; <S2SV_StartBug> box -> len = len ; <S2SV_EndBug> if ( box -> len == 1 ) { if ( jp2_getuint64 ( in , & extlen ) ) { goto error ; } if ( extlen > 0xffffffffUL ) { jas_eprintf ( \"warning:<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>large<S2SV_blank>64-bit<S2SV_blank>box<S2SV_blank>length\\\\n\" ) ; extlen = 0xffffffffUL ; } box -> len = extlen ; box -> datalen = extlen - JP2_BOX_HDRLEN ( true ) ; } else { box -> datalen = box -> len - JP2_BOX_HDRLEN ( false ) ; } if ( box -> len != 0 && box -> len < 8 ) { goto error ; } dataflag = ! ( box -> info -> flags & ( JP2_BOX_SUPER | JP2_BOX_NODATA ) ) ; if ( dataflag ) { if ( ! ( tmpstream = jas_stream_memopen ( 0 , 0 ) ) ) { goto error ; } if ( jas_stream_copy ( tmpstream , in , box -> datalen ) ) { <S2SV_StartBug> jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; <S2SV_EndBug> goto error ; } jas_stream_rewind ( tmpstream ) ; if ( box -> ops -> getdata ) { if ( ( * box -> ops -> getdata ) ( box , tmpstream ) ) { jas_eprintf ( \"cannot<S2SV_blank>parse<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; goto error ; } } jas_stream_close ( tmpstream ) ; } if ( jas_getdbglevel ( ) >= 1 ) { jp2_box_dump ( box , stderr ) ; } return box ; error : if ( box ) { jp2_box_destroy ( box ) ; } if ( tmpstream ) { jas_stream_close ( tmpstream ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = len ; JAS_DBGLOG ( 10 , ( \"preliminary<S2SV_blank>processing<S2SV_blank>of<S2SV_blank>JP2<S2SV_blank>box:<S2SV_blank>type=%c%s%c<S2SV_blank>(0x%08x);<S2SV_blank>length=%d\\\\n\" , \\'\"\\' , boxinfo -> name , \\'\"\\' , box -> type , box -> len ) ) <S2SV_ModStart> ) ) { box -> ops = & jp2_boxinfo_unk . ops ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11328\n\n```\nCWE-119 int yr_object_array_set_item ( YR_OBJECT * object , YR_OBJECT * item , int index ) { YR_OBJECT_ARRAY * array ; int i ; int count ; assert ( index >= 0 ) ; assert ( object -> type == OBJECT_TYPE_ARRAY ) ; array = object_as_array ( object ) ; if ( array -> items == NULL ) { <S2SV_StartBug> count = yr_max ( 64 , ( index + 1 ) * 2 ) ; <S2SV_EndBug> array -> items = ( YR_ARRAY_ITEMS * ) yr_malloc ( sizeof ( YR_ARRAY_ITEMS ) + count * sizeof ( YR_OBJECT * ) ) ; if ( array -> items == NULL ) return ERROR_INSUFFICIENT_MEMORY ; memset ( array -> items -> objects , 0 , count * sizeof ( YR_OBJECT * ) ) ; array -> items -> count = count ; } else if ( index >= array -> items -> count ) { count = array -> items -> count * 2 ; <S2SV_StartBug> array -> items = ( YR_ARRAY_ITEMS * ) yr_realloc ( <S2SV_EndBug> array -> items , sizeof ( YR_ARRAY_ITEMS ) + count * sizeof ( YR_OBJECT * ) ) ; if ( array -> items == NULL ) return ERROR_INSUFFICIENT_MEMORY ; for ( i = array -> items -> count ; i < count ; i ++ ) array -> items -> objects [ i ] = NULL ; array -> items -> count = count ; } item -> parent = object ; array -> items -> objects [ index ] = item ; return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { count = 64 ; while ( count <= index ) count *= 2 <S2SV_ModEnd> ; array -> <S2SV_ModStart> * 2 ; while ( count <= index ) count *= 2 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10249\n\n```\nCWE-190 void * jas_malloc ( size_t size ) { void * result ; <S2SV_StartBug> JAS_DBGLOG ( 101 , ( \"jas_malloc<S2SV_blank>called<S2SV_blank>with<S2SV_blank>%zu\\\\n\" , size ) ) ; <S2SV_EndBug> result = malloc ( size ) ; JAS_DBGLOG ( 100 , ( \"jas_malloc(%zu)<S2SV_blank>-><S2SV_blank>%p\\\\n\" , size , result ) ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 101 , ( \"jas_malloc(%zu)\\\\n\" <S2SV_ModEnd> , size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16230\n\n```\nCWE-125 static int bgp_attr_print ( netdissect_options * ndo , u_int atype , const u_char * pptr , u_int len ) { int i ; uint16_t af ; uint8_t safi , snpa , nhlen ; union { float f ; uint32_t i ; } bw ; int advance ; u_int tlen ; const u_char * tptr ; char buf [ MAXHOSTNAMELEN + 100 ] ; int as_size ; tptr = pptr ; tlen = len ; switch ( atype ) { case BGPTYPE_ORIGIN : if ( len != 1 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK ( * tptr ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_origin_values , \"Unknown<S2SV_blank>Origin<S2SV_blank>Typecode\" , tptr [ 0 ] ) ) ) ; } break ; case BGPTYPE_AS4_PATH : case BGPTYPE_AS_PATH : if ( len % 2 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } if ( ! len ) { ND_PRINT ( ( ndo , \"empty\" ) ) ; break ; } as_size = bgp_attr_get_as_size ( ndo , atype , pptr , len ) ; while ( tptr < pptr + len ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_open_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; for ( i = 0 ; i < tptr [ 1 ] * as_size ; i += as_size ) { ND_TCHECK2 ( tptr [ 2 + i ] , as_size ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , as_printf ( ndo , astostr , sizeof ( astostr ) , as_size == 2 ? EXTRACT_16BITS ( & tptr [ 2 + i ] ) : EXTRACT_32BITS ( & tptr [ 2 + i ] ) ) ) ) ; } ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_close_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; tptr += 2 + tptr [ 1 ] * as_size ; } break ; case BGPTYPE_NEXT_HOP : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; } break ; case BGPTYPE_MULTI_EXIT_DISC : case BGPTYPE_LOCAL_PREF : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( tptr ) ) ) ; } break ; case BGPTYPE_ATOMIC_AGGREGATE : if ( len != 0 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; case BGPTYPE_AGGREGATOR : if ( len != 6 && len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , len ) ; if ( len == 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_16BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 2 ) ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; } break ; case BGPTYPE_AGGREGATOR4 : if ( len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGPTYPE_COMMUNITIES : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint32_t comm ; ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; comm = EXTRACT_32BITS ( tptr ) ; switch ( comm ) { case BGP_COMMUNITY_NO_EXPORT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT\" ) ) ; break ; case BGP_COMMUNITY_NO_ADVERT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_ADVERTISE\" ) ) ; break ; case BGP_COMMUNITY_NO_EXPORT_SUBCONFED : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT_SUBCONFED\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%u:%u%s\" , ( comm >> 16 ) & 0xffff , comm & 0xffff , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; break ; } tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_ORIGINATOR_ID : if ( len != 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGPTYPE_CLUSTER_LIST : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s%s\" , ipaddr_string ( ndo , tptr ) , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_MP_REACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; goto done ; break ; } tptr += 3 ; ND_TCHECK ( tptr [ 0 ] ) ; nhlen = tptr [ 0 ] ; tlen = nhlen ; tptr ++ ; if ( tlen ) { int nnh = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>nexthop:<S2SV_blank>\" ) ) ; while ( tlen > 0 ) { if ( nnh ++ > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; } switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in_addr ) ; tptr += sizeof ( struct in_addr ) ; } break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : if ( tlen < ( int ) sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in6_addr ) ; tptr += sizeof ( struct in6_addr ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= ( sizeof ( struct in_addr ) ) ; tptr += ( sizeof ( struct in_addr ) ) ; } break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"%s\" , isonsap_string ( ndo , tptr , tlen ) ) ) ; tptr += tlen ; tlen = 0 ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < BGP_VPN_RD_LEN + 1 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , isonsap_string ( ndo , tptr + BGP_VPN_RD_LEN , tlen - BGP_VPN_RD_LEN ) ) ) ; <S2SV_StartBug> if ( EXTRACT_32BITS ( tptr + BGP_VPN_RD_LEN ) == 0x47000601 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN + 4 ) ) ) ; <S2SV_StartBug> else if ( EXTRACT_24BITS ( tptr + BGP_VPN_RD_LEN ) == 0x350000 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN + 3 ) ) ) ; tptr += tlen ; tlen = 0 ; } break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u/SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; tptr += tlen ; tlen = 0 ; goto done ; break ; } } } ND_PRINT ( ( ndo , \",<S2SV_blank>nh-length:<S2SV_blank>%u\" , nhlen ) ) ; tptr += tlen ; ND_TCHECK ( tptr [ 0 ] ) ; snpa = tptr [ 0 ] ; tptr ++ ; if ( snpa ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>SNPA\" , snpa ) ) ; for ( ; snpa > 0 ; snpa -- ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d<S2SV_blank>bytes\" , tptr [ 0 ] ) ) ; tptr += tptr [ 0 ] + 1 ; } } else { ND_PRINT ( ( ndo , \",<S2SV_blank>no<S2SV_blank>SNPA\" ) ) ; } while ( tptr < pptr + len ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : advance = decode_rt_routing_info ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * tptr , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } done : break ; case BGPTYPE_MP_UNREACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , BGP_MP_NLRI_MINSIZE ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; if ( len == BGP_MP_NLRI_MINSIZE ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>End-of-Rib<S2SV_blank>Marker<S2SV_blank>(empty<S2SV_blank>NLRI)\" ) ) ; tptr += 3 ; while ( tptr < pptr + len ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * ( tptr - 3 ) , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr - 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } break ; case BGPTYPE_EXTD_COMMUNITIES : if ( len % 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint16_t extd_comm ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; extd_comm = EXTRACT_16BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>Flags<S2SV_blank>[%s]\" , tok2str ( bgp_extd_comm_subtype_values , \"unknown<S2SV_blank>extd<S2SV_blank>community<S2SV_blank>typecode\" , extd_comm ) , extd_comm , bittok2str ( bgp_extd_comm_flag_values , \"none\" , extd_comm ) ) ) ; ND_TCHECK2 ( * ( tptr + 2 ) , 6 ) ; switch ( extd_comm ) { case BGP_EXT_COM_RT_0 : case BGP_EXT_COM_RO_0 : case BGP_EXT_COM_L2VPN_RT_0 : ND_PRINT ( ( ndo , \":<S2SV_blank>%u:%u<S2SV_blank>(=<S2SV_blank>%s)\" , EXTRACT_16BITS ( tptr + 2 ) , EXTRACT_32BITS ( tptr + 4 ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_RT_1 : case BGP_EXT_COM_RO_1 : case BGP_EXT_COM_L2VPN_RT_1 : case BGP_EXT_COM_VRF_RT_IMP : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , ipaddr_string ( ndo , tptr + 2 ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_RT_2 : case BGP_EXT_COM_RO_2 : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr + 2 ) ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_LINKBAND : bw . i = EXTRACT_32BITS ( tptr + 2 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case BGP_EXT_COM_VPN_ORIGIN : case BGP_EXT_COM_VPN_ORIGIN2 : case BGP_EXT_COM_VPN_ORIGIN3 : case BGP_EXT_COM_VPN_ORIGIN4 : case BGP_EXT_COM_OSPF_RID : case BGP_EXT_COM_OSPF_RID2 : ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr + 2 ) ) ) ; break ; case BGP_EXT_COM_OSPF_RTYPE : case BGP_EXT_COM_OSPF_RTYPE2 : ND_PRINT ( ( ndo , \":<S2SV_blank>area:%s,<S2SV_blank>router-type:%s,<S2SV_blank>metric-type:%s%s\" , ipaddr_string ( ndo , tptr + 2 ) , tok2str ( bgp_extd_comm_ospf_rtype_values , \"unknown<S2SV_blank>(0x%02x)\" , * ( tptr + 6 ) ) , ( * ( tptr + 7 ) & BGP_OSPF_RTYPE_METRIC_TYPE ) ? \"E2\" : \"\" , ( ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_EXT ) || ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_NSSA ) ) ? \"E1\" : \"\" ) ) ; break ; case BGP_EXT_COM_L2INFO : ND_PRINT ( ( ndo , \":<S2SV_blank>%s<S2SV_blank>Control<S2SV_blank>Flags<S2SV_blank>[0x%02x]:MTU<S2SV_blank>%u\" , tok2str ( l2vpn_encaps_values , \"unknown<S2SV_blank>encaps\" , * ( tptr + 2 ) ) , * ( tptr + 3 ) , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_SOURCE_AS : ND_PRINT ( ( ndo , \":<S2SV_blank>AS<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 2 ) ) ) ; break ; default : ND_TCHECK2 ( * tptr , 8 ) ; print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , 8 ) ; break ; } tlen -= 8 ; tptr += 8 ; } break ; case BGPTYPE_PMSI_TUNNEL : { uint8_t tunnel_type , flags ; ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; tunnel_type = * ( tptr + 1 ) ; flags = * tptr ; tlen = len ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>MPLS<S2SV_blank>Label<S2SV_blank>%u\" , tok2str ( bgp_pmsi_tunnel_values , \"Unknown\" , tunnel_type ) , tunnel_type , bittok2str ( bgp_pmsi_flag_values , \"none\" , flags ) , EXTRACT_24BITS ( tptr + 2 ) >> 4 ) ) ; tptr += 5 ; tlen -= 5 ; switch ( tunnel_type ) { case BGP_PMSI_TUNNEL_PIM_SM : case BGP_PMSI_TUNNEL_PIM_BIDIR : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sender<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_PIM_SSM : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_INGRESS : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-Endpoint<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGP_PMSI_TUNNEL_LDP_P2MP : case BGP_PMSI_TUNNEL_LDP_MP2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>LSP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_RSVP_P2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended-Tunnel-ID<S2SV_blank>%s,<S2SV_blank>P2MP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; } } break ; } case BGPTYPE_AIGP : { uint8_t type ; uint16_t length ; tlen = len ; while ( tlen >= 3 ) { ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; type = * tptr ; length = EXTRACT_16BITS ( tptr + 1 ) ; tptr += 3 ; tlen -= 3 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( bgp_aigp_values , \"Unknown\" , type ) , type , length ) ) ; if ( length < 3 ) goto trunc ; length -= 3 ; ND_TCHECK2 ( tptr [ 3 ] , length ) ; switch ( type ) { case BGP_AIGP_TLV : if ( length < 8 ) goto trunc ; ND_PRINT ( ( ndo , \",<S2SV_blank>metric<S2SV_blank>%\" PRIu64 , EXTRACT_64BITS ( tptr ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length ) ; } } tptr += length ; tlen -= length ; } break ; } case BGPTYPE_ATTR_SET : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Origin<S2SV_blank>AS:<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) ) ) ; tptr += 4 ; len -= 4 ; while ( len ) { u_int aflags , alenlen , alen ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; if ( len < 2 ) goto trunc ; aflags = * tptr ; atype = * ( tptr + 1 ) ; tptr += 2 ; len -= 2 ; alenlen = bgp_attr_lenlen ( aflags , tptr ) ; ND_TCHECK2 ( tptr [ 0 ] , alenlen ) ; if ( len < alenlen ) goto trunc ; alen = bgp_attr_len ( aflags , tptr ) ; tptr += alenlen ; len -= alenlen ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_attr_values , \"Unknown<S2SV_blank>Attribute\" , atype ) , atype , alen ) ) ; if ( aflags ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s%s%s%s\" , aflags & 0x80 ? \"O\" : \"\" , aflags & 0x40 ? \"T\" : \"\" , aflags & 0x20 ? \"P\" : \"\" , aflags & 0x10 ? \"E\" : \"\" ) ) ; if ( aflags & 0xf ) ND_PRINT ( ( ndo , \"+%x\" , aflags & 0xf ) ) ; ND_PRINT ( ( ndo , \"]:<S2SV_blank>\" ) ) ; } if ( ! bgp_attr_print ( ndo , atype , tptr , alen ) ) return 0 ; tptr += alen ; len -= alen ; } break ; case BGPTYPE_LARGE_COMMUNITY : if ( len == 0 || len % 12 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; while ( len > 0 ) { ND_TCHECK2 ( * tptr , 12 ) ; ND_PRINT ( ( ndo , \"%u:%u:%u%s\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , ( len > 12 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tptr += 12 ; len -= 12 ; } break ; default : ND_TCHECK2 ( * pptr , len ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>Attribute<S2SV_blank>%u<S2SV_blank>decoder\" , atype ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; break ; } if ( ndo -> ndo_vflag > 1 && len ) { ND_TCHECK2 ( * pptr , len ) ; print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; } return 1 ; trunc : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( tlen == BGP_VPN_RD_LEN + 4 + sizeof ( struct in_addr ) && <S2SV_ModStart> else if ( tlen == BGP_VPN_RD_LEN + 3 + sizeof ( struct in6_addr ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8072\n\n```\nCWE-388 static int cp2112_gpio_direction_input ( struct gpio_chip * chip , unsigned offset ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; int ret ; mutex_lock ( & dev -> lock ) ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_GET_REPORT ) ; if ( ret != CP2112_GPIO_CONFIG_LENGTH ) { hid_err ( hdev , \"error<S2SV_blank>requesting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto exit ; } buf [ 1 ] &= ~ ( 1 << offset ) ; buf [ 2 ] = gpio_push_pull ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_SET_REPORT ) ; if ( ret < 0 ) { hid_err ( hdev , \"error<S2SV_blank>setting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto exit ; } ret = 0 ; exit : mutex_unlock ( & dev -> lock ) ; <S2SV_StartBug> return ret <= 0 ? ret : - EIO ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return ret < <S2SV_ModEnd> 0 ? ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19843\n\n```\nCWE-125 static int opmov ( RAsm * a , ut8 * data , const Opcode * op ) { int l = 0 ; st64 offset = 0 ; int mod = 0 ; int base = 0 ; int rex = 0 ; ut64 immediate = 0 ; if ( op -> operands [ 1 ] . type & OT_CONSTANT ) { if ( ! op -> operands [ 1 ] . is_good_flag ) { return - 1 ; } if ( op -> operands [ 1 ] . immediate == - 1 ) { return - 1 ; } immediate = op -> operands [ 1 ] . immediate * op -> operands [ 1 ] . sign ; if ( op -> operands [ 0 ] . type & OT_GPREG && ! ( op -> operands [ 0 ] . type & OT_MEMORY ) ) { if ( a -> bits == 64 && ( ( op -> operands [ 0 ] . type & OT_QWORD ) | ( op -> operands [ 1 ] . type & OT_QWORD ) ) ) { if ( ! ( op -> operands [ 1 ] . type & OT_CONSTANT ) && op -> operands [ 1 ] . extended ) { data [ l ++ ] = 0x49 ; } else { data [ l ++ ] = 0x48 ; } } else if ( op -> operands [ 0 ] . extended ) { data [ l ++ ] = 0x41 ; } if ( op -> operands [ 0 ] . type & OT_WORD ) { if ( a -> bits > 16 ) { data [ l ++ ] = 0x66 ; } } if ( op -> operands [ 0 ] . type & OT_BYTE ) { data [ l ++ ] = 0xb0 | op -> operands [ 0 ] . reg ; data [ l ++ ] = immediate ; } else { if ( a -> bits == 64 && ( ( op -> operands [ 0 ] . type & OT_QWORD ) | ( op -> operands [ 1 ] . type & OT_QWORD ) ) && immediate < UT32_MAX ) { data [ l ++ ] = 0xc7 ; data [ l ++ ] = 0xc0 | op -> operands [ 0 ] . reg ; } else { data [ l ++ ] = 0xb8 | op -> operands [ 0 ] . reg ; } data [ l ++ ] = immediate ; data [ l ++ ] = immediate >> 8 ; if ( ! ( op -> operands [ 0 ] . type & OT_WORD ) ) { data [ l ++ ] = immediate >> 16 ; data [ l ++ ] = immediate >> 24 ; } if ( a -> bits == 64 && immediate > UT32_MAX ) { data [ l ++ ] = immediate >> 32 ; data [ l ++ ] = immediate >> 40 ; data [ l ++ ] = immediate >> 48 ; data [ l ++ ] = immediate >> 56 ; } } } else if ( op -> operands [ 0 ] . type & OT_MEMORY ) { if ( ! op -> operands [ 0 ] . explicit_size ) { if ( op -> operands [ 0 ] . type & OT_GPREG ) { ( ( Opcode * ) op ) -> operands [ 0 ] . dest_size = op -> operands [ 0 ] . reg_size ; } else { return - 1 ; } } int dest_bits = 8 * ( ( op -> operands [ 0 ] . dest_size & ALL_SIZE ) >> OPSIZE_SHIFT ) ; int reg_bits = 8 * ( ( op -> operands [ 0 ] . reg_size & ALL_SIZE ) >> OPSIZE_SHIFT ) ; int offset = op -> operands [ 0 ] . offset * op -> operands [ 0 ] . offset_sign ; bool use_aso = false ; if ( reg_bits < a -> bits ) { use_aso = true ; } bool use_oso = false ; if ( dest_bits == 16 ) { use_oso = true ; } bool rip_rel = op -> operands [ 0 ] . regs [ 0 ] == X86R_RIP ; int rex = 1 << 6 ; bool use_rex = false ; if ( dest_bits == 64 ) { use_rex = true ; rex |= 1 << 3 ; } if ( op -> operands [ 0 ] . extended ) { use_rex = true ; rex |= 1 ; } int opcode ; if ( dest_bits == 8 ) { opcode = 0xc6 ; } else { opcode = 0xc7 ; } int modrm = 0 ; int mod ; int reg = 0 ; int rm ; bool use_sib = false ; int sib ; if ( offset == 0 ) { mod = 0 ; } else if ( offset < 128 && offset > - 129 ) { mod = 1 ; } else { mod = 2 ; } if ( reg_bits == 16 ) { if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BX && op -> operands [ 0 ] . regs [ 1 ] == X86R_SI ) { rm = B0000 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BX && op -> operands [ 0 ] . regs [ 1 ] == X86R_DI ) { rm = B0001 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BP && op -> operands [ 0 ] . regs [ 1 ] == X86R_SI ) { rm = B0010 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BP && op -> operands [ 0 ] . regs [ 1 ] == X86R_DI ) { rm = B0011 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_SI && op -> operands [ 0 ] . regs [ 1 ] == - 1 ) { rm = B0100 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_DI && op -> operands [ 0 ] . regs [ 1 ] == - 1 ) { rm = B0101 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BX && op -> operands [ 0 ] . regs [ 1 ] == - 1 ) { rm = B0111 ; } else { return - 1 ; } modrm = ( mod << 6 ) | ( reg << 3 ) | rm ; } else { if ( op -> operands [ 0 ] . extended ) { rm = op -> operands [ 0 ] . reg ; } else { rm = op -> operands [ 0 ] . regs [ 0 ] ; } if ( rm == 5 && mod == 0 ) { mod = 1 ; } int index = op -> operands [ 0 ] . regs [ 1 ] ; int scale = getsib ( op -> operands [ 0 ] . scale [ 1 ] ) ; if ( index != - 1 ) { use_sib = true ; sib = ( scale << 6 ) | ( index << 3 ) | rm ; } else if ( rm == 4 ) { use_sib = true ; sib = 0x24 ; } if ( use_sib ) { rm = B0100 ; } if ( rip_rel ) { modrm = ( B0000 << 6 ) | ( reg << 3 ) | B0101 ; sib = ( scale << 6 ) | ( B0100 << 3 ) | B0101 ; } else { modrm = ( mod << 6 ) | ( reg << 3 ) | rm ; } } if ( use_aso ) { data [ l ++ ] = 0x67 ; } if ( use_oso ) { data [ l ++ ] = 0x66 ; } if ( use_rex ) { data [ l ++ ] = rex ; } data [ l ++ ] = opcode ; data [ l ++ ] = modrm ; if ( use_sib ) { data [ l ++ ] = sib ; } if ( mod == 1 ) { data [ l ++ ] = offset ; } else if ( reg_bits == 16 && mod == 2 ) { data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; } else if ( mod == 2 || rip_rel ) { data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } int byte ; for ( byte = 0 ; byte < dest_bits && byte < 32 ; byte += 8 ) { data [ l ++ ] = ( immediate >> byte ) ; } } } else if ( op -> operands [ 1 ] . type & OT_REGALL && ! ( op -> operands [ 1 ] . type & OT_MEMORY ) ) { if ( op -> operands [ 0 ] . type & OT_CONSTANT ) { return - 1 ; } if ( op -> operands [ 0 ] . type & OT_REGTYPE & OT_SEGMENTREG && op -> operands [ 1 ] . type & OT_REGTYPE & OT_SEGMENTREG ) { return - 1 ; } if ( op -> operands [ 0 ] . type & OT_REGTYPE && op -> operands [ 1 ] . type & OT_REGTYPE ) { if ( ! ( ( op -> operands [ 0 ] . type & ALL_SIZE ) & ( op -> operands [ 1 ] . type & ALL_SIZE ) ) ) { return - 1 ; } } if ( a -> bits == 64 ) { if ( op -> operands [ 0 ] . extended ) { rex = 1 ; } if ( op -> operands [ 1 ] . extended ) { rex += 4 ; } if ( op -> operands [ 1 ] . type & OT_QWORD ) { if ( ! ( op -> operands [ 0 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x67 ; data [ l ++ ] = 0x48 ; } } if ( op -> operands [ 1 ] . type & OT_QWORD && op -> operands [ 0 ] . type & OT_QWORD ) { data [ l ++ ] = 0x48 | rex ; } if ( op -> operands [ 1 ] . type & OT_DWORD && op -> operands [ 0 ] . type & OT_DWORD ) { data [ l ++ ] = 0x40 | rex ; } } else if ( op -> operands [ 0 ] . extended && op -> operands [ 1 ] . extended ) { data [ l ++ ] = 0x45 ; } offset = op -> operands [ 0 ] . offset * op -> operands [ 0 ] . offset_sign ; if ( op -> operands [ 1 ] . type & OT_REGTYPE & OT_SEGMENTREG ) { data [ l ++ ] = 0x8c ; } else { if ( op -> operands [ 0 ] . type & OT_WORD ) { data [ l ++ ] = 0x66 ; } data [ l ++ ] = ( op -> operands [ 0 ] . type & OT_BYTE ) ? 0x88 : 0x89 ; } if ( op -> operands [ 0 ] . scale [ 0 ] > 1 ) { data [ l ++ ] = op -> operands [ 1 ] . reg << 3 | 4 ; data [ l ++ ] = getsib ( op -> operands [ 0 ] . scale [ 0 ] ) << 6 | op -> operands [ 0 ] . regs [ 0 ] << 3 | 5 ; data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; return l ; } if ( ! ( op -> operands [ 0 ] . type & OT_MEMORY ) ) { if ( op -> operands [ 0 ] . reg == X86R_UNDEFINED || op -> operands [ 1 ] . reg == X86R_UNDEFINED ) { return - 1 ; } mod = 0x3 ; data [ l ++ ] = mod << 6 | op -> operands [ 1 ] . reg << 3 | op -> operands [ 0 ] . reg ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_UNDEFINED ) { data [ l ++ ] = op -> operands [ 1 ] . reg << 3 | 0x5 ; data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } else { if ( op -> operands [ 0 ] . type & OT_MEMORY ) { if ( op -> operands [ 0 ] . regs [ 1 ] != X86R_UNDEFINED ) { data [ l ++ ] = op -> operands [ 1 ] . reg << 3 | 0x4 ; data [ l ++ ] = op -> operands [ 0 ] . regs [ 1 ] << 3 | op -> operands [ 0 ] . regs [ 0 ] ; return l ; } if ( offset ) { mod = ( offset > 128 || offset < - 129 ) ? 0x2 : 0x1 ; } if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_EBP ) { mod = 0x2 ; } data [ l ++ ] = mod << 6 | op -> operands [ 1 ] . reg << 3 | op -> operands [ 0 ] . regs [ 0 ] ; if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_ESP ) { data [ l ++ ] = 0x24 ; } if ( offset ) { data [ l ++ ] = offset ; } if ( mod == 2 ) { data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } } } } else if ( op -> operands [ 1 ] . type & OT_MEMORY ) { if ( op -> operands [ 0 ] . type & OT_MEMORY ) { return - 1 ; } offset = op -> operands [ 1 ] . offset * op -> operands [ 1 ] . offset_sign ; if ( op -> operands [ 0 ] . reg == X86R_EAX && op -> operands [ 1 ] . regs [ 0 ] == X86R_UNDEFINED ) { if ( a -> bits == 64 ) { data [ l ++ ] = 0x48 ; } if ( op -> operands [ 0 ] . type & OT_BYTE ) { data [ l ++ ] = 0xa0 ; } else { data [ l ++ ] = 0xa1 ; } data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; if ( a -> bits == 64 ) { data [ l ++ ] = offset >> 32 ; data [ l ++ ] = offset >> 40 ; data [ l ++ ] = offset >> 48 ; data [ l ++ ] = offset >> 54 ; } return l ; } if ( op -> operands [ 0 ] . type & OT_BYTE && a -> bits == 64 && op -> operands [ 1 ] . regs [ 0 ] ) { if ( op -> operands [ 1 ] . regs [ 0 ] >= X86R_R8 && op -> operands [ 0 ] . reg < 4 ) { data [ l ++ ] = 0x41 ; data [ l ++ ] = 0x8a ; data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | ( op -> operands [ 1 ] . regs [ 0 ] - 8 ) ; return l ; } return - 1 ; } if ( op -> operands [ 1 ] . type & OT_REGTYPE & OT_SEGMENTREG ) { if ( op -> operands [ 1 ] . scale [ 0 ] == 0 ) { return - 1 ; } <S2SV_StartBug> data [ l ++ ] = SEG_REG_PREFIXES [ op -> operands [ 1 ] . regs [ 0 ] ] ; <S2SV_EndBug> <S2SV_StartBug> data [ l ++ ] = 0x8b ; <S2SV_EndBug> data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x5 ; <S2SV_StartBug> data [ l ++ ] = offset ; <S2SV_EndBug> data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; <S2SV_StartBug> return l ; <S2SV_EndBug> } <S2SV_StartBug> if ( a -> bits == 64 ) { <S2SV_EndBug> if ( op -> operands [ 0 ] . type & OT_QWORD ) { if ( ! ( op -> operands [ 1 ] . type & OT_QWORD ) ) { if ( op -> operands [ 1 ] . regs [ 0 ] != - 1 ) { data [ l ++ ] = 0x67 ; } data [ l ++ ] = 0x48 ; } } else if ( op -> operands [ 1 ] . type & OT_DWORD ) { data [ l ++ ] = 0x44 ; } else if ( ! ( op -> operands [ 1 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x67 ; } if ( op -> operands [ 1 ] . type & OT_QWORD && op -> operands [ 0 ] . type & OT_QWORD ) { data [ l ++ ] = 0x48 ; } } if ( op -> operands [ 0 ] . type & OT_WORD ) { data [ l ++ ] = 0x66 ; data [ l ++ ] = op -> operands [ 1 ] . type & OT_BYTE ? 0x8a : 0x8b ; } else { data [ l ++ ] = ( op -> operands [ 1 ] . type & OT_BYTE || op -> operands [ 0 ] . type & OT_BYTE ) ? 0x8a : 0x8b ; } if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_UNDEFINED ) { if ( a -> bits == 64 ) { data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x4 ; <S2SV_StartBug> data [ l ++ ] = 0x25 ; <S2SV_EndBug> } else { <S2SV_StartBug> data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x5 ; <S2SV_EndBug> } data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } else { <S2SV_StartBug> if ( op -> operands [ 1 ] . scale [ 0 ] > 1 ) { <S2SV_EndBug> <S2SV_StartBug> data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 4 ; <S2SV_EndBug> if ( op -> operands [ 1 ] . scale [ 0 ] >= 2 ) { base = 5 ; } if ( base ) { data [ l ++ ] = getsib ( op -> operands [ 1 ] . scale [ 0 ] ) << 6 | op -> operands [ 1 ] . regs [ 0 ] << 3 | base ; } else { data [ l ++ ] = getsib ( op -> operands [ 1 ] . scale [ 0 ] ) << 3 | op -> operands [ 1 ] . regs [ 0 ] ; } if ( offset || base ) { data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } return l ; } if ( op -> operands [ 1 ] . regs [ 1 ] != X86R_UNDEFINED ) { data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x4 ; data [ l ++ ] = op -> operands [ 1 ] . regs [ 1 ] << 3 | op -> operands [ 1 ] . regs [ 0 ] ; return l ; } if ( offset || op -> operands [ 1 ] . regs [ 0 ] == X86R_EBP ) { mod = 0x2 ; if ( op -> operands [ 1 ] . offset > 127 ) { mod = 0x4 ; } } if ( a -> bits == 64 && offset && op -> operands [ 0 ] . type & OT_QWORD ) { if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP ) { data [ l ++ ] = 0x5 ; } else { if ( op -> operands [ 1 ] . offset > 127 ) { data [ l ++ ] = 0x80 | op -> operands [ 0 ] . reg << 3 | op -> operands [ 1 ] . regs [ 0 ] ; } else { data [ l ++ ] = 0x40 | op -> operands [ 1 ] . regs [ 0 ] ; } } if ( op -> operands [ 1 ] . offset > 127 ) { mod = 0x1 ; } } else { if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_EIP && ( op -> operands [ 0 ] . type & OT_DWORD ) ) { data [ l ++ ] = 0x0d ; } else if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP && ( op -> operands [ 0 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x05 ; } else { data [ l ++ ] = mod << 5 | op -> operands [ 0 ] . reg << 3 | op -> operands [ 1 ] . regs [ 0 ] ; } } if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_ESP ) { data [ l ++ ] = 0x24 ; } if ( mod >= 0x2 ) { data [ l ++ ] = offset ; if ( op -> operands [ 1 ] . offset > 128 || op -> operands [ 1 ] . regs [ 0 ] == X86R_EIP ) { data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } } else if ( a -> bits == 64 && ( offset || op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP ) ) { data [ l ++ ] = offset ; if ( op -> operands [ 1 ] . offset > 127 || op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP ) { data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } } } } return l ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ 0 ] % 6 <S2SV_ModStart> = 0x8b ; data [ l ++ ] = ( ( ( ut32 ) op -> operands [ 0 ] . reg ) << 3 ) | 0x5 ; data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; return l ; } if ( a -> bits == 64 ) { if ( op -> operands [ 0 ] . type & OT_QWORD ) { if ( ! ( op -> operands [ 1 ] . type & OT_QWORD ) ) { if ( op -> operands [ 1 ] . regs [ 0 ] != - 1 ) { data [ l ++ ] = 0x67 ; } data [ l ++ ] = 0x48 ; } } else if ( op -> operands [ 1 ] . type & OT_DWORD ) { data [ l ++ ] = 0x44 ; } else if ( ! ( op -> operands [ 1 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x67 ; } if ( op -> operands [ 1 ] . type & OT_QWORD && op -> operands [ 0 ] . type & OT_QWORD ) { data [ l ++ ] = 0x48 ; } } if ( op -> operands [ 0 ] . type & OT_WORD ) { data [ l ++ ] = 0x66 ; data [ l ++ ] = op -> operands [ 1 ] . type & OT_BYTE ? 0x8a : 0x8b ; } else { data [ l ++ ] = ( op -> operands [ 1 ] . type & OT_BYTE || op -> operands [ 0 ] . type & OT_BYTE ) ? 0x8a : 0x8b ; } if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_UNDEFINED ) { if ( a -> bits == 64 ) { data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x4 ; data [ l ++ ] = 0x25 ; } else { <S2SV_ModStart> | 0x5 ; } <S2SV_ModStart> >> 24 ; } else { if ( op -> operands [ 1 ] . scale [ 0 ] > 1 ) { data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 4 ; if ( op -> operands [ 1 ] . scale [ 0 ] >= 2 ) { base = 5 ; } if ( base ) { data [ l ++ ] = getsib ( op -> operands [ 1 ] . scale [ 0 ] ) << 6 | op -> operands [ 1 ] . regs [ 0 ] << 3 | base ; } else { data [ l ++ ] = getsib ( op -> operands [ 1 ] . scale [ 0 ] ) << 3 | op -> operands [ 1 ] . regs [ 0 ] ; } if ( offset || base ) { data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } <S2SV_ModStart> } if ( op -> operands [ 1 ] . regs [ 1 ] != X86R_UNDEFINED <S2SV_ModEnd> ) { data <S2SV_ModStart> ++ ] = op -> operands [ 1 ] . regs [ 1 ] << 3 | op -> operands [ 1 ] . regs [ 0 ] ; return l ; } if ( offset || op -> operands [ 1 ] . regs [ 0 ] == X86R_EBP ) { mod = 0x2 ; if ( op -> operands [ 1 ] . offset > 127 ) { mod = 0x4 ; } } if ( a -> bits == 64 && offset && op -> operands [ 0 ] . type & OT_QWORD ) { if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP ) { data [ l ++ ] = 0x5 <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { if ( op -> operands [ 1 ] . offset > 127 ) { data [ l ++ ] = 0x80 | <S2SV_ModEnd> op -> operands <S2SV_ModStart> << 3 | op -> operands [ 1 ] . regs [ 0 ] <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { data [ l ++ ] = 0x40 | op -> operands [ 1 ] . regs [ 0 ] ; } } if ( op -> operands [ 1 ] . offset > 127 ) { mod = 0x1 ; } } else { if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_EIP && ( op -> operands [ 0 ] . type & OT_DWORD ) ) { data [ l ++ ] = 0x0d ; } else if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP && ( op -> operands [ 0 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x05 ; } else { data [ l ++ ] = mod << 5 | <S2SV_ModEnd> op -> operands <S2SV_ModStart> << 3 | <S2SV_ModEnd> op -> operands\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int setup_dev_console ( const struct lxc_rootfs * rootfs , const struct lxc_console * console ) { char path [ MAXPATHLEN ] ; struct stat s ; int ret ; ret = snprintf ( path , sizeof ( path ) , \"%s/dev/console\" , rootfs -> mount ) ; if ( ret >= sizeof ( path ) ) { ERROR ( \"console<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } if ( access ( path , F_OK ) ) { WARN ( \"rootfs<S2SV_blank>specified<S2SV_blank>but<S2SV_blank>no<S2SV_blank>console<S2SV_blank>found<S2SV_blank>at<S2SV_blank>\\'%s\\'\" , path ) ; return 0 ; } if ( console -> master < 0 ) { INFO ( \"no<S2SV_blank>console\" ) ; return 0 ; } if ( stat ( path , & s ) ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>stat<S2SV_blank>\\'%s\\'\" , path ) ; return - 1 ; } if ( chmod ( console -> name , s . st_mode ) ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>mode<S2SV_blank>\\'0%o\\'<S2SV_blank>to<S2SV_blank>\\'%s\\'\" , s . st_mode , console -> name ) ; return - 1 ; } <S2SV_StartBug> if ( mount ( console -> name , path , \"none\" , MS_BIND , 0 ) ) { <S2SV_EndBug> ERROR ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'\" , console -> name , path ) ; return - 1 ; } INFO ( \"console<S2SV_blank>has<S2SV_blank>been<S2SV_blank>setup\" ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( safe_mount ( console -> name , path , \"none\" , MS_BIND , 0 , rootfs -> mount <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7500\n\n```\nCWE-59 <S2SV_StartBug> static int fsmVerify ( const char * path , rpmfi fi ) <S2SV_EndBug> { int rc ; int saveerrno = errno ; struct stat dsb ; mode_t mode = rpmfiFMode ( fi ) ; rc = fsmStat ( path , 1 , & dsb ) ; if ( rc ) return rc ; if ( S_ISREG ( mode ) ) { char * rmpath = rstrscat ( NULL , path , \"-RPMDELETE\" , NULL ) ; rc = fsmRename ( path , rmpath ) ; if ( ! rc ) ( void ) fsmUnlink ( rmpath ) ; else rc = RPMERR_UNLINK_FAILED ; free ( rmpath ) ; return ( rc ? rc : RPMERR_ENOENT ) ; } else if ( S_ISDIR ( mode ) ) { if ( S_ISDIR ( dsb . st_mode ) ) return 0 ; if ( S_ISLNK ( dsb . st_mode ) ) { <S2SV_StartBug> rc = fsmStat ( path , 0 , & dsb ) ; <S2SV_EndBug> if ( rc == RPMERR_ENOENT ) rc = 0 ; if ( rc ) return rc ; errno = saveerrno ; <S2SV_StartBug> if ( S_ISDIR ( dsb . st_mode ) ) return 0 ; <S2SV_EndBug> } } else if ( S_ISLNK ( mode ) ) { if ( S_ISLNK ( dsb . st_mode ) ) { char buf [ 8 * BUFSIZ ] ; size_t len ; rc = fsmReadLink ( path , buf , 8 * BUFSIZ , & len ) ; errno = saveerrno ; if ( rc ) return rc ; if ( rstreq ( rpmfiFLink ( fi ) , buf ) ) return 0 ; } } else if ( S_ISFIFO ( mode ) ) { if ( S_ISFIFO ( dsb . st_mode ) ) return 0 ; } else if ( S_ISCHR ( mode ) || S_ISBLK ( mode ) ) { if ( ( S_ISCHR ( dsb . st_mode ) || S_ISBLK ( dsb . st_mode ) ) && ( dsb . st_rdev == rpmfiFRdev ( fi ) ) ) return 0 ; } else if ( S_ISSOCK ( mode ) ) { if ( S_ISSOCK ( dsb . st_mode ) ) return 0 ; } rc = fsmUnlink ( path ) ; if ( rc == 0 ) rc = RPMERR_ENOENT ; return ( rc ? rc : RPMERR_ENOENT ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , rpmfi fi , const struct stat * fsb <S2SV_ModStart> ) ) { uid_t luid = dsb . st_uid ; <S2SV_ModStart> . st_mode ) && ( luid == 0 || luid == fsb -> st_uid ) ) <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 void btif_hl_select_monitor_callback ( fd_set * p_cur_set , fd_set * p_org_set ) { UNUSED ( p_org_set ) ; BTIF_TRACE_DEBUG ( \"entering<S2SV_blank>%s\" , __FUNCTION__ ) ; for ( const list_node_t * node = list_begin ( soc_queue ) ; node != list_end ( soc_queue ) ; node = list_next ( node ) ) { btif_hl_soc_cb_t * p_scb = list_node ( node ) ; if ( btif_hl_get_socket_state ( p_scb ) == BTIF_HL_SOC_STATE_W4_READ ) { if ( FD_ISSET ( p_scb -> socket_id [ 1 ] , p_cur_set ) ) { BTIF_TRACE_DEBUG ( \"read<S2SV_blank>data<S2SV_blank>state=<S2SV_blank>BTIF_HL_SOC_STATE_W4_READ\" ) ; btif_hl_mdl_cb_t * p_dcb = BTIF_HL_GET_MDL_CB_PTR ( p_scb -> app_idx , p_scb -> mcl_idx , p_scb -> mdl_idx ) ; assert ( p_dcb != NULL ) ; if ( p_dcb -> p_tx_pkt ) { BTIF_TRACE_ERROR ( \"Rcv<S2SV_blank>new<S2SV_blank>pkt<S2SV_blank>but<S2SV_blank>the<S2SV_blank>last<S2SV_blank>pkt<S2SV_blank>is<S2SV_blank>still<S2SV_blank>not<S2SV_blank>been\" \"<S2SV_blank><S2SV_blank>sent<S2SV_blank>tx_size=%d\" , p_dcb -> tx_size ) ; btif_hl_free_buf ( ( void * * ) & p_dcb -> p_tx_pkt ) ; } p_dcb -> p_tx_pkt = btif_hl_get_buf ( p_dcb -> mtu ) ; if ( p_dcb ) { <S2SV_StartBug> int r = ( int ) recv ( p_scb -> socket_id [ 1 ] , p_dcb -> p_tx_pkt , <S2SV_EndBug> <S2SV_StartBug> p_dcb -> mtu , MSG_DONTWAIT ) ; <S2SV_EndBug> if ( r > 0 ) { BTIF_TRACE_DEBUG ( \"btif_hl_select_monitor_callback<S2SV_blank>send<S2SV_blank>data<S2SV_blank>r<S2SV_blank>=%d\" , r ) ; p_dcb -> tx_size = r ; BTIF_TRACE_DEBUG ( \"btif_hl_select_monitor_callback<S2SV_blank>send<S2SV_blank>data<S2SV_blank>tx_size=%d\" , p_dcb -> tx_size ) ; BTA_HlSendData ( p_dcb -> mdl_handle , p_dcb -> tx_size ) ; } else { BTIF_TRACE_DEBUG ( \"btif_hl_select_monitor_callback<S2SV_blank>receive<S2SV_blank>failed<S2SV_blank>r=%d\" , r ) ; BTA_HlDchClose ( p_dcb -> mdl_handle ) ; } } } } } if ( list_is_empty ( soc_queue ) ) BTIF_TRACE_DEBUG ( \"btif_hl_select_monitor_queue<S2SV_blank>is<S2SV_blank>empty\" ) ; BTIF_TRACE_DEBUG ( \"leaving<S2SV_blank>%s\" , __FUNCTION__ ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( int ) TEMP_FAILURE_RETRY ( <S2SV_ModStart> , MSG_DONTWAIT ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5873\n\n```\nCWE-362 static void * __ns_get_path ( struct path * path , struct ns_common * ns ) { struct vfsmount * mnt = nsfs_mnt ; struct qstr qname = { . name = \"\" , } ; struct dentry * dentry ; struct inode * inode ; unsigned long d ; rcu_read_lock ( ) ; d = atomic_long_read ( & ns -> stashed ) ; if ( ! d ) goto slow ; dentry = ( struct dentry * ) d ; if ( ! lockref_get_not_dead ( & dentry -> d_lockref ) ) goto slow ; rcu_read_unlock ( ) ; ns -> ops -> put ( ns ) ; got_it : path -> mnt = mntget ( mnt ) ; path -> dentry = dentry ; return NULL ; slow : rcu_read_unlock ( ) ; inode = new_inode_pseudo ( mnt -> mnt_sb ) ; if ( ! inode ) { ns -> ops -> put ( ns ) ; return ERR_PTR ( - ENOMEM ) ; } inode -> i_ino = ns -> inum ; inode -> i_mtime = inode -> i_atime = inode -> i_ctime = current_time ( inode ) ; inode -> i_flags |= S_IMMUTABLE ; inode -> i_mode = S_IFREG | S_IRUGO ; inode -> i_fop = & ns_file_operations ; inode -> i_private = ns ; dentry = d_alloc_pseudo ( mnt -> mnt_sb , & qname ) ; if ( ! dentry ) { iput ( inode ) ; return ERR_PTR ( - ENOMEM ) ; } d_instantiate ( dentry , inode ) ; <S2SV_StartBug> dentry -> d_fsdata = ( void * ) ns -> ops ; <S2SV_EndBug> d = atomic_long_cmpxchg ( & ns -> stashed , 0 , ( unsigned long ) dentry ) ; if ( d ) { d_delete ( dentry ) ; dput ( dentry ) ; cpu_relax ( ) ; return ERR_PTR ( - EAGAIN ) ; } goto got_it ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dentry -> d_flags |= DCACHE_RCUACCESS ; dentry ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15173\n\n```\nCWE-119 int l2tp_packet_send ( int sock , struct l2tp_packet_t * pack ) { <S2SV_StartBug> uint8_t * buf = mempool_alloc ( buf_pool ) ; <S2SV_EndBug> struct l2tp_avp_t * avp ; struct l2tp_attr_t * attr ; <S2SV_StartBug> uint8_t * ptr ; <S2SV_EndBug> <S2SV_StartBug> int n ; <S2SV_EndBug> int len = sizeof ( pack -> hdr ) ; if ( ! buf ) { log_emerg ( \"l2tp:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; return - 1 ; } memset ( buf , 0 , L2TP_MAX_PACKET_SIZE ) ; <S2SV_StartBug> ptr = buf + sizeof ( pack -> hdr ) ; <S2SV_EndBug> list_for_each_entry ( attr , & pack -> attrs , entry ) { if ( len + sizeof ( * avp ) + attr -> length >= L2TP_MAX_PACKET_SIZE ) { log_error ( \"l2tp:<S2SV_blank>cann\\'t<S2SV_blank>send<S2SV_blank>packet<S2SV_blank>(exceeds<S2SV_blank>maximum<S2SV_blank>size)\\\\n\" ) ; mempool_free ( buf ) ; return - 1 ; } avp = ( struct l2tp_avp_t * ) ptr ; avp -> type = htons ( attr -> attr -> id ) ; <S2SV_StartBug> avp -> M = attr -> M ; <S2SV_EndBug> avp -> H = attr -> H ; <S2SV_StartBug> avp -> length = sizeof ( * avp ) + attr -> length ; <S2SV_EndBug> * ( uint16_t * ) ptr = htons ( * ( uint16_t * ) ptr ) ; if ( attr -> H ) memcpy ( avp -> val , attr -> val . octets , attr -> length ) ; else switch ( attr -> attr -> type ) { case ATTR_TYPE_INT16 : * ( int16_t * ) avp -> val = htons ( attr -> val . int16 ) ; break ; case ATTR_TYPE_INT32 : * ( int32_t * ) avp -> val = htonl ( attr -> val . int32 ) ; break ; case ATTR_TYPE_INT64 : * ( uint64_t * ) avp -> val = htobe64 ( attr -> val . uint64 ) ; break ; case ATTR_TYPE_STRING : case ATTR_TYPE_OCTETS : memcpy ( avp -> val , attr -> val . string , attr -> length ) ; break ; } ptr += sizeof ( * avp ) + attr -> length ; len += sizeof ( * avp ) + attr -> length ; } pack -> hdr . length = htons ( len ) ; memcpy ( buf , & pack -> hdr , sizeof ( pack -> hdr ) ) ; <S2SV_StartBug> n = sendto ( sock , buf , ntohs ( pack -> hdr . length ) , 0 , <S2SV_EndBug> & pack -> addr , sizeof ( pack -> addr ) ) ; mempool_free ( buf ) ; if ( n < 0 ) { if ( errno == EAGAIN ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>buffer<S2SV_blank>overflow<S2SV_blank>(packet<S2SV_blank>lost)\\\\n\" ) ; } else { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>sendto:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; return - 1 ; } } <S2SV_StartBug> if ( n != ntohs ( pack -> hdr . length ) ) { <S2SV_EndBug> if ( conf_verbose ) <S2SV_StartBug> log_warn ( \"l2tp:<S2SV_blank>short<S2SV_blank>write<S2SV_blank>(%i/%i)\\\\n\" , n , ntohs ( pack -> hdr . length ) ) ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pack ) { struct l2tp_hdr_t * hdr <S2SV_ModEnd> ; struct l2tp_avp_t <S2SV_ModStart> ; uint8_t * buf , * <S2SV_ModStart> ; int n , len ; buf = mempool_alloc ( buf_pool <S2SV_ModEnd> ) ; if <S2SV_ModStart> L2TP_MAX_PACKET_SIZE ) ; hdr = ( struct l2tp_hdr_t * ) buf ; ptr = ( uint8_t * ) ( hdr + 1 ) ; len = <S2SV_ModEnd> sizeof ( pack <S2SV_ModStart> ; avp -> flags = htons ( ( attr -> M ? L2TP_AVP_FLAG_M : 0 ) | ( attr -> H ? L2TP_AVP_FLAG_H : 0 ) | ( ( <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> attr -> length ) & L2TP_AVP_LEN_MASK ) <S2SV_ModEnd> ) ; if <S2SV_ModStart> ) ) ; hdr -> flags = htons ( pack -> hdr . flags ) ; <S2SV_ModStart> , buf , len <S2SV_ModEnd> , 0 , <S2SV_ModStart> ( n != len <S2SV_ModEnd> ) { if <S2SV_ModStart> , n , len <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 timestamp PGTYPEStimestamp_from_asc ( char * str , char * * endptr ) { timestamp result ; # ifdef HAVE_INT64_TIMESTAMP int64 noresult = 0 ; # else double noresult = 0.0 ; # endif fsec_t fsec ; struct tm tt , * tm = & tt ; int dtype ; int nf ; char * field [ MAXDATEFIELDS ] ; int ftype [ MAXDATEFIELDS ] ; char lowstr [ MAXDATELEN + MAXDATEFIELDS ] ; char * realptr ; char * * ptr = ( endptr != NULL ) ? endptr : & realptr ; <S2SV_StartBug> if ( strlen ( str ) >= sizeof ( lowstr ) ) <S2SV_EndBug> { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } <S2SV_StartBug> if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || <S2SV_EndBug> DecodeDateTime ( field , ftype , nf , & dtype , tm , & fsec , 0 ) != 0 ) { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } switch ( dtype ) { case DTK_DATE : if ( tm2timestamp ( tm , fsec , NULL , & result ) != 0 ) { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } break ; case DTK_EPOCH : result = SetEpochTimestamp ( ) ; break ; case DTK_LATE : TIMESTAMP_NOEND ( result ) ; break ; case DTK_EARLY : TIMESTAMP_NOBEGIN ( result ) ; break ; case DTK_INVALID : errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; default : errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } errno = 0 ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( str ) > MAXDATELEN ) { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || DecodeDateTime ( field , ftype , nf , & dtype , tm , & fsec , 0 ) != 0 ) { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } switch ( dtype ) { case DTK_DATE : if ( tm2timestamp ( tm , fsec , NULL , & result <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ) != 0 <S2SV_ModEnd> ) { errno\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4167\n\n```\nCWE-189 static int udf_read_inode ( struct inode * inode , bool hidden_inode ) { struct buffer_head * bh = NULL ; struct fileEntry * fe ; struct extendedFileEntry * efe ; uint16_t ident ; struct udf_inode_info * iinfo = UDF_I ( inode ) ; struct udf_sb_info * sbi = UDF_SB ( inode -> i_sb ) ; struct kernel_lb_addr * iloc = & iinfo -> i_location ; unsigned int link_count ; unsigned int indirections = 0 ; int bs = inode -> i_sb -> s_blocksize ; int ret = - EIO ; reread : if ( iloc -> logicalBlockNum >= sbi -> s_partmaps [ iloc -> partitionReferenceNum ] . s_partition_len ) { udf_debug ( \"block=%d,<S2SV_blank>partition=%d<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , iloc -> logicalBlockNum , iloc -> partitionReferenceNum ) ; return - EIO ; } bh = udf_read_ptagged ( inode -> i_sb , iloc , 0 , & ident ) ; if ( ! bh ) { udf_err ( inode -> i_sb , \"(ino<S2SV_blank>%ld)<S2SV_blank>failed<S2SV_blank>!bh\\\\n\" , inode -> i_ino ) ; return - EIO ; } if ( ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE && ident != TAG_IDENT_USE ) { udf_err ( inode -> i_sb , \"(ino<S2SV_blank>%ld)<S2SV_blank>failed<S2SV_blank>ident=%d\\\\n\" , inode -> i_ino , ident ) ; goto out ; } fe = ( struct fileEntry * ) bh -> b_data ; efe = ( struct extendedFileEntry * ) bh -> b_data ; if ( fe -> icbTag . strategyType == cpu_to_le16 ( 4096 ) ) { struct buffer_head * ibh ; ibh = udf_read_ptagged ( inode -> i_sb , iloc , 1 , & ident ) ; if ( ident == TAG_IDENT_IE && ibh ) { struct kernel_lb_addr loc ; struct indirectEntry * ie ; ie = ( struct indirectEntry * ) ibh -> b_data ; loc = lelb_to_cpu ( ie -> indirectICB . extLocation ) ; if ( ie -> indirectICB . extLength ) { brelse ( ibh ) ; memcpy ( & iinfo -> i_location , & loc , sizeof ( struct kernel_lb_addr ) ) ; if ( ++ indirections > UDF_MAX_ICB_NESTING ) { udf_err ( inode -> i_sb , \"too<S2SV_blank>many<S2SV_blank>ICBs<S2SV_blank>in<S2SV_blank>ICB<S2SV_blank>hierarchy\" \"<S2SV_blank>(max<S2SV_blank>%d<S2SV_blank>supported)\\\\n\" , UDF_MAX_ICB_NESTING ) ; goto out ; } brelse ( bh ) ; goto reread ; } } brelse ( ibh ) ; } else if ( fe -> icbTag . strategyType != cpu_to_le16 ( 4 ) ) { udf_err ( inode -> i_sb , \"unsupported<S2SV_blank>strategy<S2SV_blank>type:<S2SV_blank>%d\\\\n\" , le16_to_cpu ( fe -> icbTag . strategyType ) ) ; goto out ; } if ( fe -> icbTag . strategyType == cpu_to_le16 ( 4 ) ) iinfo -> i_strat4096 = 0 ; else iinfo -> i_strat4096 = 1 ; iinfo -> i_alloc_type = le16_to_cpu ( fe -> icbTag . flags ) & ICBTAG_FLAG_AD_MASK ; iinfo -> i_unique = 0 ; iinfo -> i_lenEAttr = 0 ; iinfo -> i_lenExtents = 0 ; iinfo -> i_lenAlloc = 0 ; iinfo -> i_next_alloc_block = 0 ; iinfo -> i_next_alloc_goal = 0 ; if ( fe -> descTag . tagIdent == cpu_to_le16 ( TAG_IDENT_EFE ) ) { iinfo -> i_efe = 1 ; iinfo -> i_use = 0 ; ret = udf_alloc_i_data ( inode , bs - sizeof ( struct extendedFileEntry ) ) ; if ( ret ) goto out ; memcpy ( iinfo -> i_ext . i_data , bh -> b_data + sizeof ( struct extendedFileEntry ) , bs - sizeof ( struct extendedFileEntry ) ) ; } else if ( fe -> descTag . tagIdent == cpu_to_le16 ( TAG_IDENT_FE ) ) { iinfo -> i_efe = 0 ; iinfo -> i_use = 0 ; ret = udf_alloc_i_data ( inode , bs - sizeof ( struct fileEntry ) ) ; if ( ret ) goto out ; memcpy ( iinfo -> i_ext . i_data , bh -> b_data + sizeof ( struct fileEntry ) , bs - sizeof ( struct fileEntry ) ) ; } else if ( fe -> descTag . tagIdent == cpu_to_le16 ( TAG_IDENT_USE ) ) { iinfo -> i_efe = 0 ; iinfo -> i_use = 1 ; iinfo -> i_lenAlloc = le32_to_cpu ( ( ( struct unallocSpaceEntry * ) bh -> b_data ) -> lengthAllocDescs ) ; ret = udf_alloc_i_data ( inode , bs - sizeof ( struct unallocSpaceEntry ) ) ; if ( ret ) goto out ; memcpy ( iinfo -> i_ext . i_data , bh -> b_data + sizeof ( struct unallocSpaceEntry ) , bs - sizeof ( struct unallocSpaceEntry ) ) ; return 0 ; } ret = - EIO ; read_lock ( & sbi -> s_cred_lock ) ; i_uid_write ( inode , le32_to_cpu ( fe -> uid ) ) ; if ( ! uid_valid ( inode -> i_uid ) || UDF_QUERY_FLAG ( inode -> i_sb , UDF_FLAG_UID_IGNORE ) || UDF_QUERY_FLAG ( inode -> i_sb , UDF_FLAG_UID_SET ) ) inode -> i_uid = UDF_SB ( inode -> i_sb ) -> s_uid ; i_gid_write ( inode , le32_to_cpu ( fe -> gid ) ) ; if ( ! gid_valid ( inode -> i_gid ) || UDF_QUERY_FLAG ( inode -> i_sb , UDF_FLAG_GID_IGNORE ) || UDF_QUERY_FLAG ( inode -> i_sb , UDF_FLAG_GID_SET ) ) inode -> i_gid = UDF_SB ( inode -> i_sb ) -> s_gid ; if ( fe -> icbTag . fileType != ICBTAG_FILE_TYPE_DIRECTORY && sbi -> s_fmode != UDF_INVALID_MODE ) inode -> i_mode = sbi -> s_fmode ; else if ( fe -> icbTag . fileType == ICBTAG_FILE_TYPE_DIRECTORY && sbi -> s_dmode != UDF_INVALID_MODE ) inode -> i_mode = sbi -> s_dmode ; else inode -> i_mode = udf_convert_permissions ( fe ) ; inode -> i_mode &= ~ sbi -> s_umask ; read_unlock ( & sbi -> s_cred_lock ) ; link_count = le16_to_cpu ( fe -> fileLinkCount ) ; if ( ! link_count ) { if ( ! hidden_inode ) { ret = - ESTALE ; goto out ; } link_count = 1 ; } set_nlink ( inode , link_count ) ; inode -> i_size = le64_to_cpu ( fe -> informationLength ) ; iinfo -> i_lenExtents = inode -> i_size ; if ( iinfo -> i_efe == 0 ) { inode -> i_blocks = le64_to_cpu ( fe -> logicalBlocksRecorded ) << ( inode -> i_sb -> s_blocksize_bits - 9 ) ; if ( ! udf_disk_stamp_to_time ( & inode -> i_atime , fe -> accessTime ) ) inode -> i_atime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & inode -> i_mtime , fe -> modificationTime ) ) inode -> i_mtime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & inode -> i_ctime , fe -> attrTime ) ) inode -> i_ctime = sbi -> s_record_time ; iinfo -> i_unique = le64_to_cpu ( fe -> uniqueID ) ; iinfo -> i_lenEAttr = le32_to_cpu ( fe -> lengthExtendedAttr ) ; iinfo -> i_lenAlloc = le32_to_cpu ( fe -> lengthAllocDescs ) ; iinfo -> i_checkpoint = le32_to_cpu ( fe -> checkpoint ) ; } else { inode -> i_blocks = le64_to_cpu ( efe -> logicalBlocksRecorded ) << ( inode -> i_sb -> s_blocksize_bits - 9 ) ; if ( ! udf_disk_stamp_to_time ( & inode -> i_atime , efe -> accessTime ) ) inode -> i_atime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & inode -> i_mtime , efe -> modificationTime ) ) inode -> i_mtime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & iinfo -> i_crtime , efe -> createTime ) ) iinfo -> i_crtime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & inode -> i_ctime , efe -> attrTime ) ) inode -> i_ctime = sbi -> s_record_time ; iinfo -> i_unique = le64_to_cpu ( efe -> uniqueID ) ; iinfo -> i_lenEAttr = le32_to_cpu ( efe -> lengthExtendedAttr ) ; iinfo -> i_lenAlloc = le32_to_cpu ( efe -> lengthAllocDescs ) ; iinfo -> i_checkpoint = le32_to_cpu ( efe -> checkpoint ) ; } inode -> i_generation = iinfo -> i_unique ; <S2SV_StartBug> if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ) { <S2SV_EndBug> if ( iinfo -> i_lenAlloc != inode -> i_size ) goto out ; if ( inode -> i_size > bs - udf_file_entry_alloc_offset ( inode ) ) goto out ; } switch ( fe -> icbTag . fileType ) { case ICBTAG_FILE_TYPE_DIRECTORY : inode -> i_op = & udf_dir_inode_operations ; inode -> i_fop = & udf_dir_operations ; inode -> i_mode |= S_IFDIR ; inc_nlink ( inode ) ; break ; case ICBTAG_FILE_TYPE_REALTIME : case ICBTAG_FILE_TYPE_REGULAR : case ICBTAG_FILE_TYPE_UNDEF : case ICBTAG_FILE_TYPE_VAT20 : if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ) inode -> i_data . a_ops = & udf_adinicb_aops ; else inode -> i_data . a_ops = & udf_aops ; inode -> i_op = & udf_file_inode_operations ; inode -> i_fop = & udf_file_operations ; inode -> i_mode |= S_IFREG ; break ; case ICBTAG_FILE_TYPE_BLOCK : inode -> i_mode |= S_IFBLK ; break ; case ICBTAG_FILE_TYPE_CHAR : inode -> i_mode |= S_IFCHR ; break ; case ICBTAG_FILE_TYPE_FIFO : init_special_inode ( inode , inode -> i_mode | S_IFIFO , 0 ) ; break ; case ICBTAG_FILE_TYPE_SOCKET : init_special_inode ( inode , inode -> i_mode | S_IFSOCK , 0 ) ; break ; case ICBTAG_FILE_TYPE_SYMLINK : inode -> i_data . a_ops = & udf_symlink_aops ; inode -> i_op = & udf_symlink_inode_operations ; inode -> i_mode = S_IFLNK | S_IRWXUGO ; break ; case ICBTAG_FILE_TYPE_MAIN : udf_debug ( \"METADATA<S2SV_blank>FILE-----\\\\n\" ) ; break ; case ICBTAG_FILE_TYPE_MIRROR : udf_debug ( \"METADATA<S2SV_blank>MIRROR<S2SV_blank>FILE-----\\\\n\" ) ; break ; case ICBTAG_FILE_TYPE_BITMAP : udf_debug ( \"METADATA<S2SV_blank>BITMAP<S2SV_blank>FILE-----\\\\n\" ) ; break ; default : udf_err ( inode -> i_sb , \"(ino<S2SV_blank>%ld)<S2SV_blank>failed<S2SV_blank>unknown<S2SV_blank>file<S2SV_blank>type=%d\\\\n\" , inode -> i_ino , fe -> icbTag . fileType ) ; goto out ; } if ( S_ISCHR ( inode -> i_mode ) || S_ISBLK ( inode -> i_mode ) ) { struct deviceSpec * dsea = ( struct deviceSpec * ) udf_get_extendedattr ( inode , 12 , 1 ) ; if ( dsea ) { init_special_inode ( inode , inode -> i_mode , MKDEV ( le32_to_cpu ( dsea -> majorDeviceIdent ) , le32_to_cpu ( dsea -> minorDeviceIdent ) ) ) ; } else goto out ; } ret = 0 ; out : brelse ( bh ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( iinfo -> i_lenEAttr > bs || iinfo -> i_lenAlloc > bs ) goto out ; if ( udf_file_entry_alloc_offset ( inode ) + iinfo -> i_lenAlloc > bs ) goto out ; if ( iinfo ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 void ssh_kex2 ( char * host , struct sockaddr * hostaddr , u_short port ) { char * myproposal [ PROPOSAL_MAX ] = { KEX_CLIENT } ; char * s ; struct kex * kex ; int r ; xxx_host = host ; xxx_hostaddr = hostaddr ; if ( ( s = kex_names_cat ( options . kex_algorithms , \"ext-info-c\" ) ) == NULL ) fatal ( \"%s:<S2SV_blank>kex_names_cat\" , __func__ ) ; myproposal [ PROPOSAL_KEX_ALGS ] = compat_kex_proposal ( s ) ; myproposal [ PROPOSAL_ENC_ALGS_CTOS ] = compat_cipher_proposal ( options . ciphers ) ; myproposal [ PROPOSAL_ENC_ALGS_STOC ] = compat_cipher_proposal ( options . ciphers ) ; myproposal [ PROPOSAL_COMP_ALGS_CTOS ] = myproposal [ PROPOSAL_COMP_ALGS_STOC ] = options . compression ? <S2SV_StartBug> \"zlib@openssh.com,zlib,none\" : \"none,zlib@openssh.com,zlib\" ; <S2SV_EndBug> myproposal [ PROPOSAL_MAC_ALGS_CTOS ] = myproposal [ PROPOSAL_MAC_ALGS_STOC ] = options . macs ; if ( options . hostkeyalgorithms != NULL ) { if ( kex_assemble_names ( KEX_DEFAULT_PK_ALG , & options . hostkeyalgorithms ) != 0 ) fatal ( \"%s:<S2SV_blank>kex_assemble_namelist\" , __func__ ) ; myproposal [ PROPOSAL_SERVER_HOST_KEY_ALGS ] = compat_pkalg_proposal ( options . hostkeyalgorithms ) ; } else { options . hostkeyalgorithms = xstrdup ( KEX_DEFAULT_PK_ALG ) ; myproposal [ PROPOSAL_SERVER_HOST_KEY_ALGS ] = compat_pkalg_proposal ( order_hostkeyalgs ( host , hostaddr , port ) ) ; } if ( options . rekey_limit || options . rekey_interval ) packet_set_rekey_limits ( ( u_int32_t ) options . rekey_limit , ( time_t ) options . rekey_interval ) ; if ( ( r = kex_setup ( active_state , myproposal ) ) != 0 ) fatal ( \"kex_setup:<S2SV_blank>%s\" , ssh_err ( r ) ) ; kex = active_state -> kex ; # ifdef WITH_OPENSSL kex -> kex [ KEX_DH_GRP1_SHA1 ] = kexdh_client ; kex -> kex [ KEX_DH_GRP14_SHA1 ] = kexdh_client ; kex -> kex [ KEX_DH_GRP14_SHA256 ] = kexdh_client ; kex -> kex [ KEX_DH_GRP16_SHA512 ] = kexdh_client ; kex -> kex [ KEX_DH_GRP18_SHA512 ] = kexdh_client ; kex -> kex [ KEX_DH_GEX_SHA1 ] = kexgex_client ; kex -> kex [ KEX_DH_GEX_SHA256 ] = kexgex_client ; kex -> kex [ KEX_ECDH_SHA2 ] = kexecdh_client ; # endif kex -> kex [ KEX_C25519_SHA256 ] = kexc25519_client ; kex -> client_version_string = client_version_string ; kex -> server_version_string = server_version_string ; kex -> verify_host_key = & verify_host_key_callback ; dispatch_run ( DISPATCH_BLOCK , & kex -> done , active_state ) ; myproposal [ PROPOSAL_KEX_ALGS ] = compat_kex_proposal ( options . kex_algorithms ) ; if ( ( r = kex_prop2buf ( kex -> my , myproposal ) ) != 0 ) fatal ( \"kex_prop2buf:<S2SV_blank>%s\" , ssh_err ( r ) ) ; session_id2 = kex -> session_id ; session_id2_len = kex -> session_id_len ; # ifdef DEBUG_KEXDH packet_start ( SSH2_MSG_IGNORE ) ; packet_put_cstring ( \"markus\" ) ; packet_send ( ) ; packet_write_wait ( ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . compression ? \"zlib@openssh.com,none\" : \"none,zlib@openssh.com\" <S2SV_ModEnd> ; myproposal [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8865\n\n```\nCWE-119 protected int file_check_mem ( struct magic_set * ms , unsigned int level ) { size_t len ; if ( level >= ms -> c . len ) { <S2SV_StartBug> len = ( ms -> c . len += 20 ) * sizeof ( * ms -> c . li ) ; <S2SV_EndBug> ms -> c . li = CAST ( struct level_info * , ( ms -> c . li == NULL ) ? malloc ( len ) : realloc ( ms -> c . li , len ) ) ; if ( ms -> c . li == NULL ) { file_oomem ( ms , len ) ; return - 1 ; } } ms -> c . li [ level ] . got_match = 0 ; # ifdef ENABLE_CONDITIONALS ms -> c . li [ level ] . last_match = 0 ; ms -> c . li [ level ] . last_cond = COND_NONE ; # endif return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c . len = 20 + level <S2SV_ModEnd> ) * sizeof\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10200\n\n```\nCWE-416 static int l2tp_ip6_bind ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct sockaddr_l2tpip6 * addr = ( struct sockaddr_l2tpip6 * ) uaddr ; struct net * net = sock_net ( sk ) ; __be32 v4addr = 0 ; int addr_type ; int err ; <S2SV_StartBug> if ( ! sock_flag ( sk , SOCK_ZAPPED ) ) <S2SV_EndBug> return - EINVAL ; if ( addr -> l2tp_family != AF_INET6 ) return - EINVAL ; if ( addr_len < sizeof ( * addr ) ) return - EINVAL ; addr_type = ipv6_addr_type ( & addr -> l2tp_addr ) ; if ( addr_type == IPV6_ADDR_MAPPED ) return - EADDRNOTAVAIL ; if ( addr_type & IPV6_ADDR_MULTICAST ) return - EADDRNOTAVAIL ; err = - EADDRINUSE ; read_lock_bh ( & l2tp_ip6_lock ) ; if ( __l2tp_ip6_bind_lookup ( net , & addr -> l2tp_addr , sk -> sk_bound_dev_if , addr -> l2tp_conn_id ) ) goto out_in_use ; read_unlock_bh ( & l2tp_ip6_lock ) ; lock_sock ( sk ) ; err = - EINVAL ; <S2SV_StartBug> if ( sk -> sk_state != TCP_CLOSE ) <S2SV_EndBug> goto out_unlock ; rcu_read_lock ( ) ; if ( addr_type != IPV6_ADDR_ANY ) { struct net_device * dev = NULL ; if ( addr_type & IPV6_ADDR_LINKLOCAL ) { if ( addr_len >= sizeof ( struct sockaddr_in6 ) && addr -> l2tp_scope_id ) { sk -> sk_bound_dev_if = addr -> l2tp_scope_id ; } if ( ! sk -> sk_bound_dev_if ) goto out_unlock_rcu ; err = - ENODEV ; dev = dev_get_by_index_rcu ( sock_net ( sk ) , sk -> sk_bound_dev_if ) ; if ( ! dev ) goto out_unlock_rcu ; } v4addr = LOOPBACK4_IPV6 ; err = - EADDRNOTAVAIL ; if ( ! ipv6_chk_addr ( sock_net ( sk ) , & addr -> l2tp_addr , dev , 0 ) ) goto out_unlock_rcu ; } rcu_read_unlock ( ) ; inet -> inet_rcv_saddr = inet -> inet_saddr = v4addr ; sk -> sk_v6_rcv_saddr = addr -> l2tp_addr ; np -> saddr = addr -> l2tp_addr ; l2tp_ip6_sk ( sk ) -> conn_id = addr -> l2tp_conn_id ; write_lock_bh ( & l2tp_ip6_lock ) ; sk_add_bind_node ( sk , & l2tp_ip6_bind_table ) ; sk_del_node_init ( sk ) ; write_unlock_bh ( & l2tp_ip6_lock ) ; sock_reset_flag ( sk , SOCK_ZAPPED ) ; release_sock ( sk ) ; return 0 ; out_unlock_rcu : rcu_read_unlock ( ) ; out_unlock : release_sock ( sk ) ; return err ; out_in_use : read_unlock_bh ( & l2tp_ip6_lock ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> addr -> l2tp_family <S2SV_ModStart> ; if ( ! sock_flag ( sk , SOCK_ZAPPED ) ) goto out_unlock ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5354\n\n```\nCWE-476 static gint dissect_ac_if_hdr_body ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ , proto_tree * tree , usb_conv_info_t * usb_conv_info ) { gint offset_start ; guint16 bcdADC ; guint8 ver_major ; double ver ; guint8 if_in_collection , i ; audio_conv_info_t * audio_conv_info ; offset_start = offset ; bcdADC = tvb_get_letohs ( tvb , offset ) ; ver_major = USB_AUDIO_BCD44_TO_DEC ( bcdADC >> 8 ) ; ver = ver_major + USB_AUDIO_BCD44_TO_DEC ( bcdADC & 0xFF ) / 100.0 ; proto_tree_add_double_format_value ( tree , hf_ac_if_hdr_ver , tvb , offset , 2 , ver , \"%2.2f\" , ver ) ; audio_conv_info = ( audio_conv_info_t * ) usb_conv_info -> class_data ; if ( ! audio_conv_info ) { audio_conv_info = wmem_new ( wmem_file_scope ( ) , audio_conv_info_t ) ; usb_conv_info -> class_data = audio_conv_info ; <S2SV_StartBug> } <S2SV_EndBug> audio_conv_info -> ver_major = ver_major ; offset += 2 ; if ( ver_major == 1 ) { proto_tree_add_item ( tree , hf_ac_if_hdr_total_len , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; offset += 2 ; if_in_collection = tvb_get_guint8 ( tvb , offset ) ; proto_tree_add_item ( tree , hf_ac_if_hdr_bInCollection , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; offset ++ ; for ( i = 0 ; i < if_in_collection ; i ++ ) { proto_tree_add_item ( tree , hf_ac_if_hdr_if_num , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; offset ++ ; } } return offset - offset_start ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = audio_conv_info ; usb_conv_info -> class_data_type = USB_CONV_AUDIO ; } else if ( usb_conv_info -> class_data_type != USB_CONV_AUDIO ) { return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10021\n\n```\nCWE-000 static void sas_eh_handle_sas_errors ( struct Scsi_Host * shost , struct list_head * work_q ) { struct scsi_cmnd * cmd , * n ; enum task_disposition res = TASK_IS_DONE ; int tmf_resp , need_reset ; struct sas_internal * i = to_sas_internal ( shost -> transportt ) ; unsigned long flags ; struct sas_ha_struct * ha = SHOST_TO_SAS_HA ( shost ) ; LIST_HEAD ( done ) ; list_for_each_entry_safe ( cmd , n , work_q , eh_entry ) { struct domain_device * dev = cmd_to_domain_dev ( cmd ) ; struct sas_task * task ; spin_lock_irqsave ( & dev -> done_lock , flags ) ; task = TO_SAS_TASK ( cmd ) ; spin_unlock_irqrestore ( & dev -> done_lock , flags ) ; if ( ! task ) list_move_tail ( & cmd -> eh_entry , & done ) ; } Again : list_for_each_entry_safe ( cmd , n , work_q , eh_entry ) { struct sas_task * task = TO_SAS_TASK ( cmd ) ; list_del_init ( & cmd -> eh_entry ) ; spin_lock_irqsave ( & task -> task_state_lock , flags ) ; need_reset = task -> task_state_flags & SAS_TASK_NEED_DEV_RESET ; spin_unlock_irqrestore ( & task -> task_state_lock , flags ) ; if ( need_reset ) { SAS_DPRINTK ( \"%s:<S2SV_blank>task<S2SV_blank>0x%p<S2SV_blank>requests<S2SV_blank>reset\\\\n\" , __func__ , task ) ; goto reset ; } SAS_DPRINTK ( \"trying<S2SV_blank>to<S2SV_blank>find<S2SV_blank>task<S2SV_blank>0x%p\\\\n\" , task ) ; res = sas_scsi_find_task ( task ) ; switch ( res ) { case TASK_IS_DONE : SAS_DPRINTK ( \"%s:<S2SV_blank>task<S2SV_blank>0x%p<S2SV_blank>is<S2SV_blank>done\\\\n\" , __func__ , task ) ; <S2SV_StartBug> sas_eh_defer_cmd ( cmd ) ; <S2SV_EndBug> continue ; case TASK_IS_ABORTED : SAS_DPRINTK ( \"%s:<S2SV_blank>task<S2SV_blank>0x%p<S2SV_blank>is<S2SV_blank>aborted\\\\n\" , __func__ , task ) ; <S2SV_StartBug> sas_eh_defer_cmd ( cmd ) ; <S2SV_EndBug> continue ; case TASK_IS_AT_LU : SAS_DPRINTK ( \"task<S2SV_blank>0x%p<S2SV_blank>is<S2SV_blank>at<S2SV_blank>LU:<S2SV_blank>lu<S2SV_blank>recover\\\\n\" , task ) ; reset : tmf_resp = sas_recover_lu ( task -> dev , cmd ) ; if ( tmf_resp == TMF_RESP_FUNC_COMPLETE ) { SAS_DPRINTK ( \"dev<S2SV_blank>%016llx<S2SV_blank>LU<S2SV_blank>%llx<S2SV_blank>is<S2SV_blank>\" \"recovered\\\\n\" , SAS_ADDR ( task -> dev ) , cmd -> device -> lun ) ; <S2SV_StartBug> sas_eh_defer_cmd ( cmd ) ; <S2SV_EndBug> sas_scsi_clear_queue_lu ( work_q , cmd ) ; goto Again ; } case TASK_IS_NOT_AT_LU : case TASK_ABORT_FAILED : SAS_DPRINTK ( \"task<S2SV_blank>0x%p<S2SV_blank>is<S2SV_blank>not<S2SV_blank>at<S2SV_blank>LU:<S2SV_blank>I_T<S2SV_blank>recover\\\\n\" , task ) ; tmf_resp = sas_recover_I_T ( task -> dev ) ; if ( tmf_resp == TMF_RESP_FUNC_COMPLETE || tmf_resp == - ENODEV ) { struct domain_device * dev = task -> dev ; SAS_DPRINTK ( \"I_T<S2SV_blank>%016llx<S2SV_blank>recovered\\\\n\" , SAS_ADDR ( task -> dev -> sas_addr ) ) ; sas_eh_finish_cmd ( cmd ) ; sas_scsi_clear_queue_I_T ( work_q , dev ) ; goto Again ; } try_to_reset_cmd_device ( cmd ) ; if ( i -> dft -> lldd_clear_nexus_port ) { struct asd_sas_port * port = task -> dev -> port ; SAS_DPRINTK ( \"clearing<S2SV_blank>nexus<S2SV_blank>for<S2SV_blank>port:%d\\\\n\" , port -> id ) ; res = i -> dft -> lldd_clear_nexus_port ( port ) ; if ( res == TMF_RESP_FUNC_COMPLETE ) { SAS_DPRINTK ( \"clear<S2SV_blank>nexus<S2SV_blank>port:%d<S2SV_blank>\" \"succeeded\\\\n\" , port -> id ) ; sas_eh_finish_cmd ( cmd ) ; sas_scsi_clear_queue_port ( work_q , port ) ; goto Again ; } } if ( i -> dft -> lldd_clear_nexus_ha ) { SAS_DPRINTK ( \"clear<S2SV_blank>nexus<S2SV_blank>ha\\\\n\" ) ; res = i -> dft -> lldd_clear_nexus_ha ( ha ) ; if ( res == TMF_RESP_FUNC_COMPLETE ) { SAS_DPRINTK ( \"clear<S2SV_blank>nexus<S2SV_blank>ha<S2SV_blank>\" \"succeeded\\\\n\" ) ; sas_eh_finish_cmd ( cmd ) ; goto clear_q ; } } SAS_DPRINTK ( \"error<S2SV_blank>from<S2SV_blank><S2SV_blank>device<S2SV_blank>%llx,<S2SV_blank>LUN<S2SV_blank>%llx<S2SV_blank>\" \"couldn\\'t<S2SV_blank>be<S2SV_blank>recovered<S2SV_blank>in<S2SV_blank>any<S2SV_blank>way\\\\n\" , SAS_ADDR ( task -> dev -> sas_addr ) , cmd -> device -> lun ) ; sas_eh_finish_cmd ( cmd ) ; goto clear_q ; } } out : list_splice_tail ( & done , work_q ) ; list_splice_tail_init ( & ha -> eh_ata_q , work_q ) ; return ; clear_q : SAS_DPRINTK ( \"---<S2SV_blank>Exit<S2SV_blank>%s<S2SV_blank>--<S2SV_blank>clear_q\\\\n\" , __func__ ) ; list_for_each_entry_safe ( cmd , n , work_q , eh_entry ) sas_eh_finish_cmd ( cmd ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> task ) ; sas_eh_finish_cmd <S2SV_ModEnd> ( cmd ) <S2SV_ModStart> task ) ; sas_eh_finish_cmd <S2SV_ModEnd> ( cmd ) <S2SV_ModStart> lun ) ; sas_eh_finish_cmd <S2SV_ModEnd> ( cmd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4817\n\n```\nCWE-000 <S2SV_StartBug> void close_connection ( h2o_http2_conn_t * conn ) <S2SV_EndBug> { conn -> state = H2O_HTTP2_CONN_STATE_IS_CLOSING ; if ( conn -> _write . buf_in_flight != NULL || h2o_timeout_is_linked ( & conn -> _write . timeout_entry ) ) { } else { close_connection_now ( conn ) ; <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> int <S2SV_ModEnd> close_connection ( h2o_http2_conn_t <S2SV_ModStart> conn ) ; return - 1 ; } return 0 ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5892\n\n```\nCWE-436 bgp_size_t bgp_packet_attribute ( struct bgp * bgp , struct peer * peer , struct stream * s , struct attr * attr , struct bpacket_attr_vec_arr * vecarr , struct prefix * p , afi_t afi , safi_t safi , struct peer * from , struct prefix_rd * prd , mpls_label_t * label , uint32_t num_labels , int addpath_encode , uint32_t addpath_tx_id ) { size_t cp ; size_t aspath_sizep ; struct aspath * aspath ; int send_as4_path = 0 ; int send_as4_aggregator = 0 ; int use32bit = ( CHECK_FLAG ( peer -> cap , PEER_CAP_AS4_RCV ) ) ? 1 : 0 ; if ( ! bgp ) bgp = peer -> bgp ; cp = stream_get_endp ( s ) ; if ( p && ! ( ( afi == AFI_IP && safi == SAFI_UNICAST ) && ! peer_cap_enhe ( peer , afi , safi ) ) ) { size_t mpattrlen_pos = 0 ; mpattrlen_pos = bgp_packet_mpattr_start ( s , peer , afi , safi , vecarr , attr ) ; bgp_packet_mpattr_prefix ( s , afi , safi , p , prd , label , num_labels , addpath_encode , addpath_tx_id , attr ) ; bgp_packet_mpattr_end ( s , mpattrlen_pos ) ; } stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_ORIGIN ) ; stream_putc ( s , 1 ) ; stream_putc ( s , attr -> origin ) ; if ( peer -> sort == BGP_PEER_EBGP && ( ! CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_AS_PATH_UNCHANGED ) || attr -> aspath -> segments == NULL ) && ( ! CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_RSERVER_CLIENT ) ) ) { aspath = aspath_dup ( attr -> aspath ) ; aspath = aspath_delete_confed_seq ( aspath ) ; if ( CHECK_FLAG ( bgp -> config , BGP_CONFIG_CONFEDERATION ) ) { aspath = aspath_add_seq ( aspath , bgp -> confed_id ) ; } else { if ( peer -> change_local_as ) { if ( ! CHECK_FLAG ( peer -> flags , PEER_FLAG_LOCAL_AS_REPLACE_AS ) ) { aspath = aspath_add_seq ( aspath , peer -> local_as ) ; } aspath = aspath_add_seq ( aspath , peer -> change_local_as ) ; } else { aspath = aspath_add_seq ( aspath , peer -> local_as ) ; } } } else if ( peer -> sort == BGP_PEER_CONFED ) { aspath = aspath_dup ( attr -> aspath ) ; aspath = aspath_add_confed_seq ( aspath , peer -> local_as ) ; } else aspath = attr -> aspath ; stream_putc ( s , BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_AS_PATH ) ; aspath_sizep = stream_get_endp ( s ) ; stream_putw ( s , 0 ) ; stream_putw_at ( s , aspath_sizep , aspath_put ( s , aspath , use32bit ) ) ; if ( ! use32bit && aspath_has_as4 ( aspath ) ) send_as4_path = 1 ; if ( afi == AFI_IP && safi == SAFI_UNICAST && ! peer_cap_enhe ( peer , afi , safi ) ) { if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_NEXT_HOP ) ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_NEXT_HOP ) ; bpacket_attr_vec_arr_set_vec ( vecarr , BGP_ATTR_VEC_NH , s , attr ) ; stream_putc ( s , 4 ) ; stream_put_ipv4 ( s , attr -> nexthop . s_addr ) ; } else if ( peer_cap_enhe ( from , afi , safi ) ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_NEXT_HOP ) ; bpacket_attr_vec_arr_set_vec ( vecarr , BGP_ATTR_VEC_NH , s , NULL ) ; stream_putc ( s , 4 ) ; stream_put_ipv4 ( s , 0 ) ; } } if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_MULTI_EXIT_DISC ) || bgp -> maxmed_active ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL ) ; stream_putc ( s , BGP_ATTR_MULTI_EXIT_DISC ) ; stream_putc ( s , 4 ) ; stream_putl ( s , ( bgp -> maxmed_active ? bgp -> maxmed_value : attr -> med ) ) ; } if ( peer -> sort == BGP_PEER_IBGP || peer -> sort == BGP_PEER_CONFED ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_LOCAL_PREF ) ; stream_putc ( s , 4 ) ; stream_putl ( s , attr -> local_pref ) ; } if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_ATOMIC_AGGREGATE ) ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_ATOMIC_AGGREGATE ) ; stream_putc ( s , 0 ) ; } if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_AGGREGATOR ) ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_AGGREGATOR ) ; if ( use32bit ) { stream_putc ( s , 8 ) ; stream_putl ( s , attr -> aggregator_as ) ; } else { stream_putc ( s , 6 ) ; if ( attr -> aggregator_as > 65535 ) { stream_putw ( s , BGP_AS_TRANS ) ; send_as4_aggregator = 1 ; } else stream_putw ( s , ( uint16_t ) attr -> aggregator_as ) ; } stream_put_ipv4 ( s , attr -> aggregator_addr . s_addr ) ; } if ( CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_SEND_COMMUNITY ) && ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_COMMUNITIES ) ) ) { if ( attr -> community -> size * 4 > 255 ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_COMMUNITIES ) ; stream_putw ( s , attr -> community -> size * 4 ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_COMMUNITIES ) ; stream_putc ( s , attr -> community -> size * 4 ) ; } stream_put ( s , attr -> community -> val , attr -> community -> size * 4 ) ; } if ( CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_SEND_LARGE_COMMUNITY ) && ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_LARGE_COMMUNITIES ) ) ) { if ( lcom_length ( attr -> lcommunity ) > 255 ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_LARGE_COMMUNITIES ) ; stream_putw ( s , lcom_length ( attr -> lcommunity ) ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_LARGE_COMMUNITIES ) ; stream_putc ( s , lcom_length ( attr -> lcommunity ) ) ; } stream_put ( s , attr -> lcommunity -> val , lcom_length ( attr -> lcommunity ) ) ; } if ( peer -> sort == BGP_PEER_IBGP && from && from -> sort == BGP_PEER_IBGP ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL ) ; stream_putc ( s , BGP_ATTR_ORIGINATOR_ID ) ; stream_putc ( s , 4 ) ; if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_ORIGINATOR_ID ) ) stream_put_in_addr ( s , & attr -> originator_id ) ; else stream_put_in_addr ( s , & from -> remote_id ) ; stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL ) ; stream_putc ( s , BGP_ATTR_CLUSTER_LIST ) ; if ( attr -> cluster ) { stream_putc ( s , attr -> cluster -> length + 4 ) ; if ( bgp -> config & BGP_CONFIG_CLUSTER_ID ) stream_put_in_addr ( s , & bgp -> cluster_id ) ; else stream_put_in_addr ( s , & bgp -> router_id ) ; stream_put ( s , attr -> cluster -> list , attr -> cluster -> length ) ; } else { stream_putc ( s , 4 ) ; if ( bgp -> config & BGP_CONFIG_CLUSTER_ID ) stream_put_in_addr ( s , & bgp -> cluster_id ) ; else stream_put_in_addr ( s , & bgp -> router_id ) ; } } if ( CHECK_FLAG ( peer -> af_flags [ afi ] [ safi ] , PEER_FLAG_SEND_EXT_COMMUNITY ) && ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_EXT_COMMUNITIES ) ) ) { if ( peer -> sort == BGP_PEER_IBGP || peer -> sort == BGP_PEER_CONFED ) { if ( attr -> ecommunity -> size * 8 > 255 ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_EXT_COMMUNITIES ) ; stream_putw ( s , attr -> ecommunity -> size * 8 ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_EXT_COMMUNITIES ) ; stream_putc ( s , attr -> ecommunity -> size * 8 ) ; } stream_put ( s , attr -> ecommunity -> val , attr -> ecommunity -> size * 8 ) ; } else { uint8_t * pnt ; int tbit ; int ecom_tr_size = 0 ; int i ; for ( i = 0 ; i < attr -> ecommunity -> size ; i ++ ) { pnt = attr -> ecommunity -> val + ( i * 8 ) ; tbit = * pnt ; if ( CHECK_FLAG ( tbit , ECOMMUNITY_FLAG_NON_TRANSITIVE ) ) continue ; ecom_tr_size ++ ; } if ( ecom_tr_size ) { if ( ecom_tr_size * 8 > 255 ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_EXT_COMMUNITIES ) ; stream_putw ( s , ecom_tr_size * 8 ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_EXT_COMMUNITIES ) ; stream_putc ( s , ecom_tr_size * 8 ) ; } for ( i = 0 ; i < attr -> ecommunity -> size ; i ++ ) { pnt = attr -> ecommunity -> val + ( i * 8 ) ; tbit = * pnt ; if ( CHECK_FLAG ( tbit , ECOMMUNITY_FLAG_NON_TRANSITIVE ) ) continue ; stream_put ( s , pnt , 8 ) ; } } } } if ( safi == SAFI_LABELED_UNICAST ) { if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_PREFIX_SID ) ) { uint32_t label_index ; label_index = attr -> label_index ; if ( label_index != BGP_INVALID_LABEL_INDEX ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_PREFIX_SID ) ; stream_putc ( s , 10 ) ; stream_putc ( s , BGP_PREFIX_SID_LABEL_INDEX ) ; stream_putw ( s , BGP_PREFIX_SID_LABEL_INDEX_LENGTH ) ; stream_putc ( s , 0 ) ; stream_putw ( s , 0 ) ; stream_putl ( s , label_index ) ; } } } if ( send_as4_path ) { aspath = aspath_delete_confed_seq ( aspath ) ; stream_putc ( s , BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , BGP_ATTR_AS4_PATH ) ; aspath_sizep = stream_get_endp ( s ) ; stream_putw ( s , 0 ) ; stream_putw_at ( s , aspath_sizep , aspath_put ( s , aspath , 1 ) ) ; } if ( aspath != attr -> aspath ) aspath_free ( aspath ) ; if ( send_as4_aggregator ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_AS4_AGGREGATOR ) ; stream_putc ( s , 8 ) ; stream_putl ( s , attr -> aggregator_as ) ; stream_put_ipv4 ( s , attr -> aggregator_addr . s_addr ) ; } if ( ( ( afi == AFI_IP || afi == AFI_IP6 ) && ( safi == SAFI_ENCAP || safi == SAFI_MPLS_VPN ) ) || ( afi == AFI_L2VPN && safi == SAFI_EVPN ) ) { bgp_packet_mpattr_tea ( bgp , peer , s , attr , BGP_ATTR_ENCAP ) ; <S2SV_StartBug> # if ENABLE_BGP_VNC <S2SV_EndBug> bgp_packet_mpattr_tea ( bgp , peer , s , attr , BGP_ATTR_VNC ) ; # endif } if ( attr -> flag & ATTR_FLAG_BIT ( BGP_ATTR_PMSI_TUNNEL ) ) { stream_putc ( s , BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_TRANS ) ; stream_putc ( s , BGP_ATTR_PMSI_TUNNEL ) ; stream_putc ( s , 9 ) ; stream_putc ( s , 0 ) ; stream_putc ( s , PMSI_TNLTYPE_INGR_REPL ) ; stream_put ( s , & ( attr -> label ) , BGP_LABEL_BYTES ) ; stream_put_ipv4 ( s , attr -> nexthop . s_addr ) ; } if ( attr -> transit ) stream_put ( s , attr -> transit -> val , attr -> transit -> length ) ; return stream_get_endp ( s ) - cp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # if ENABLE_BGP_VNC_ATTR <S2SV_ModEnd> bgp_packet_mpattr_tea ( bgp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 int sas_ex_revalidate_domain ( struct domain_device * port_dev ) { int res ; struct domain_device * dev = NULL ; res = sas_find_bcast_dev ( port_dev , & dev ) ; <S2SV_StartBug> while ( res == 0 && dev ) { <S2SV_EndBug> struct expander_device * ex = & dev -> ex_dev ; int i = 0 , phy_id ; do { phy_id = - 1 ; res = sas_find_bcast_phy ( dev , & phy_id , i , true ) ; if ( phy_id == - 1 ) break ; res = sas_rediscover ( dev , phy_id ) ; i = phy_id + 1 ; } while ( i < ex -> num_phys ) ; <S2SV_StartBug> dev = NULL ; <S2SV_EndBug> res = sas_find_bcast_dev ( port_dev , & dev ) ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) ; if <S2SV_ModEnd> ( res == <S2SV_ModStart> num_phys ) ; <S2SV_ModEnd> } return res\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13052\n\n```\nCWE-125 void cfm_print ( netdissect_options * ndo , register const u_char * pptr , register u_int length ) { const struct cfm_common_header_t * cfm_common_header ; const struct cfm_tlv_header_t * cfm_tlv_header ; const uint8_t * tptr , * tlv_ptr ; const uint8_t * namesp ; u_int names_data_remaining ; uint8_t md_nameformat , md_namelength ; const uint8_t * md_name ; uint8_t ma_nameformat , ma_namelength ; const uint8_t * ma_name ; u_int hexdump , tlen , cfm_tlv_len , cfm_tlv_type , ccm_interval ; union { const struct cfm_ccm_t * cfm_ccm ; const struct cfm_lbm_t * cfm_lbm ; const struct cfm_ltm_t * cfm_ltm ; const struct cfm_ltr_t * cfm_ltr ; } msg_ptr ; tptr = pptr ; cfm_common_header = ( const struct cfm_common_header_t * ) pptr ; if ( length < sizeof ( * cfm_common_header ) ) goto tooshort ; ND_TCHECK ( * cfm_common_header ) ; if ( CFM_EXTRACT_VERSION ( cfm_common_header -> mdlevel_version ) != CFM_VERSION ) { ND_PRINT ( ( ndo , \"CFMv%u<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>length<S2SV_blank>%u\" , CFM_EXTRACT_VERSION ( cfm_common_header -> mdlevel_version ) , length ) ) ; return ; } ND_PRINT ( ( ndo , \"CFMv%u<S2SV_blank>%s,<S2SV_blank>MD<S2SV_blank>Level<S2SV_blank>%u,<S2SV_blank>length<S2SV_blank>%u\" , CFM_EXTRACT_VERSION ( cfm_common_header -> mdlevel_version ) , tok2str ( cfm_opcode_values , \"unknown<S2SV_blank>(%u)\" , cfm_common_header -> opcode ) , CFM_EXTRACT_MD_LEVEL ( cfm_common_header -> mdlevel_version ) , length ) ) ; if ( ndo -> ndo_vflag < 1 ) { return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\tFirst<S2SV_blank>TLV<S2SV_blank>offset<S2SV_blank>%u\" , cfm_common_header -> first_tlv_offset ) ) ; tptr += sizeof ( const struct cfm_common_header_t ) ; tlen = length - sizeof ( struct cfm_common_header_t ) ; if ( cfm_common_header -> first_tlv_offset > tlen ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>large,<S2SV_blank>must<S2SV_blank>be<S2SV_blank><=<S2SV_blank>%u)\" , tlen ) ) ; return ; } switch ( cfm_common_header -> opcode ) { case CFM_OPCODE_CCM : msg_ptr . cfm_ccm = ( const struct cfm_ccm_t * ) tptr ; if ( cfm_common_header -> first_tlv_offset < sizeof ( * msg_ptr . cfm_ccm ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>small<S2SV_blank>1,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>%lu)\" , ( unsigned long ) sizeof ( * msg_ptr . cfm_ccm ) ) ) ; return ; } if ( tlen < sizeof ( * msg_ptr . cfm_ccm ) ) goto tooshort ; ND_TCHECK ( * msg_ptr . cfm_ccm ) ; ccm_interval = CFM_EXTRACT_CCM_INTERVAL ( cfm_common_header -> flags ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[CCM<S2SV_blank>Interval<S2SV_blank>%u%s]\" , ccm_interval , cfm_common_header -> flags & CFM_CCM_RDI_FLAG ? \",<S2SV_blank>RDI\" : \"\" ) ) ; if ( ccm_interval ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>CCM<S2SV_blank>Interval<S2SV_blank>%.3fs\" \",<S2SV_blank>min<S2SV_blank>CCM<S2SV_blank>Lifetime<S2SV_blank>%.3fs,<S2SV_blank>max<S2SV_blank>CCM<S2SV_blank>Lifetime<S2SV_blank>%.3fs\" , ccm_interval_base [ ccm_interval ] , ccm_interval_base [ ccm_interval ] * CCM_INTERVAL_MIN_MULTIPLIER , ccm_interval_base [ ccm_interval ] * CCM_INTERVAL_MAX_MULTIPLIER ) ) ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Sequence<S2SV_blank>Number<S2SV_blank>0x%08x,<S2SV_blank>MA-End-Point-ID<S2SV_blank>0x%04x\" , EXTRACT_32BITS ( msg_ptr . cfm_ccm -> sequence ) , EXTRACT_16BITS ( msg_ptr . cfm_ccm -> ma_epi ) ) ) ; namesp = msg_ptr . cfm_ccm -> names ; names_data_remaining = sizeof ( msg_ptr . cfm_ccm -> names ) ; md_nameformat = * namesp ; namesp ++ ; names_data_remaining -- ; if ( md_nameformat != CFM_CCM_MD_FORMAT_NONE ) { md_namelength = * namesp ; namesp ++ ; names_data_remaining -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MD<S2SV_blank>Name<S2SV_blank>Format<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>MD<S2SV_blank>Name<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( cfm_md_nameformat_values , \"Unknown\" , md_nameformat ) , md_nameformat , md_namelength ) ) ; if ( md_namelength > names_data_remaining - 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>large,<S2SV_blank>must<S2SV_blank>be<S2SV_blank><=<S2SV_blank>%u)\" , names_data_remaining - 2 ) ) ; return ; } md_name = namesp ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MD<S2SV_blank>Name:<S2SV_blank>\" ) ) ; switch ( md_nameformat ) { case CFM_CCM_MD_FORMAT_DNS : case CFM_CCM_MD_FORMAT_CHAR : safeputs ( ndo , md_name , md_namelength ) ; break ; case CFM_CCM_MD_FORMAT_MAC : if ( md_namelength == 6 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MAC<S2SV_blank>%s\" , etheraddr_string ( ndo , md_name ) ) ) ; } else { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MAC<S2SV_blank>(length<S2SV_blank>invalid)\" ) ) ; } break ; case CFM_CCM_MA_FORMAT_8021 : default : print_unknown_data ( ndo , md_name , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , md_namelength ) ; } namesp += md_namelength ; names_data_remaining -= md_namelength ; } else { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MD<S2SV_blank>Name<S2SV_blank>Format<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( cfm_md_nameformat_values , \"Unknown\" , md_nameformat ) , md_nameformat ) ) ; } ma_nameformat = * namesp ; namesp ++ ; names_data_remaining -- ; ma_namelength = * namesp ; namesp ++ ; names_data_remaining -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MA<S2SV_blank>Name-Format<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>MA<S2SV_blank>name<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( cfm_ma_nameformat_values , \"Unknown\" , ma_nameformat ) , ma_nameformat , ma_namelength ) ) ; if ( ma_namelength > names_data_remaining ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>large,<S2SV_blank>must<S2SV_blank>be<S2SV_blank><=<S2SV_blank>%u)\" , names_data_remaining ) ) ; return ; } ma_name = namesp ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MA<S2SV_blank>Name:<S2SV_blank>\" ) ) ; switch ( ma_nameformat ) { case CFM_CCM_MA_FORMAT_CHAR : safeputs ( ndo , ma_name , ma_namelength ) ; break ; case CFM_CCM_MA_FORMAT_8021 : case CFM_CCM_MA_FORMAT_VID : case CFM_CCM_MA_FORMAT_INT : case CFM_CCM_MA_FORMAT_VPN : default : print_unknown_data ( ndo , ma_name , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , ma_namelength ) ; } break ; case CFM_OPCODE_LTM : msg_ptr . cfm_ltm = ( const struct cfm_ltm_t * ) tptr ; if ( cfm_common_header -> first_tlv_offset < sizeof ( * msg_ptr . cfm_ltm ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>small<S2SV_blank>4,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>%lu)\" , ( unsigned long ) sizeof ( * msg_ptr . cfm_ltm ) ) ) ; return ; } if ( tlen < sizeof ( * msg_ptr . cfm_ltm ) ) goto tooshort ; ND_TCHECK ( * msg_ptr . cfm_ltm ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( cfm_ltm_flag_values , \"none\" , cfm_common_header -> flags ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Transaction-ID<S2SV_blank>0x%08x,<S2SV_blank>ttl<S2SV_blank>%u\" , EXTRACT_32BITS ( msg_ptr . cfm_ltm -> transaction_id ) , msg_ptr . cfm_ltm -> ttl ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Original-MAC<S2SV_blank>%s,<S2SV_blank>Target-MAC<S2SV_blank>%s\" , etheraddr_string ( ndo , msg_ptr . cfm_ltm -> original_mac ) , etheraddr_string ( ndo , msg_ptr . cfm_ltm -> target_mac ) ) ) ; break ; case CFM_OPCODE_LTR : msg_ptr . cfm_ltr = ( const struct cfm_ltr_t * ) tptr ; if ( cfm_common_header -> first_tlv_offset < sizeof ( * msg_ptr . cfm_ltr ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>small<S2SV_blank>5,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>%lu)\" , ( unsigned long ) sizeof ( * msg_ptr . cfm_ltr ) ) ) ; return ; } if ( tlen < sizeof ( * msg_ptr . cfm_ltr ) ) goto tooshort ; ND_TCHECK ( * msg_ptr . cfm_ltr ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( cfm_ltr_flag_values , \"none\" , cfm_common_header -> flags ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Transaction-ID<S2SV_blank>0x%08x,<S2SV_blank>ttl<S2SV_blank>%u\" , EXTRACT_32BITS ( msg_ptr . cfm_ltr -> transaction_id ) , msg_ptr . cfm_ltr -> ttl ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Replay-Action<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( cfm_ltr_replay_action_values , \"Unknown\" , msg_ptr . cfm_ltr -> replay_action ) , msg_ptr . cfm_ltr -> replay_action ) ) ; break ; case CFM_OPCODE_LBR : case CFM_OPCODE_LBM : default : print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , tlen - cfm_common_header -> first_tlv_offset ) ; break ; } tptr += cfm_common_header -> first_tlv_offset ; tlen -= cfm_common_header -> first_tlv_offset ; while ( tlen > 0 ) { cfm_tlv_header = ( const struct cfm_tlv_header_t * ) tptr ; ND_TCHECK2 ( * tptr , 1 ) ; cfm_tlv_type = cfm_tlv_header -> type ; ND_PRINT ( ( ndo , \"\\\\n\\\\t%s<S2SV_blank>TLV<S2SV_blank>(0x%02x)\" , tok2str ( cfm_tlv_values , \"Unknown\" , cfm_tlv_type ) , cfm_tlv_type ) ) ; if ( cfm_tlv_type == CFM_TLV_END ) { return ; } if ( tlen < sizeof ( struct cfm_tlv_header_t ) ) goto tooshort ; ND_TCHECK2 ( * tptr , sizeof ( struct cfm_tlv_header_t ) ) ; cfm_tlv_len = EXTRACT_16BITS ( & cfm_tlv_header -> length ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , cfm_tlv_len ) ) ; tptr += sizeof ( struct cfm_tlv_header_t ) ; tlen -= sizeof ( struct cfm_tlv_header_t ) ; tlv_ptr = tptr ; if ( tlen < cfm_tlv_len ) goto tooshort ; ND_TCHECK2 ( * tptr , cfm_tlv_len ) ; hexdump = FALSE ; switch ( cfm_tlv_type ) { case CFM_TLV_PORT_STATUS : if ( cfm_tlv_len < 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>1)\" ) ) ; return ; } ND_PRINT ( ( ndo , \",<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( cfm_tlv_port_status_values , \"Unknown\" , * tptr ) , * tptr ) ) ; break ; case CFM_TLV_INTERFACE_STATUS : if ( cfm_tlv_len < 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>1)\" ) ) ; return ; } ND_PRINT ( ( ndo , \",<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( cfm_tlv_interface_status_values , \"Unknown\" , * tptr ) , * tptr ) ) ; break ; case CFM_TLV_PRIVATE : if ( cfm_tlv_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return ; } ND_PRINT ( ( ndo , \",<S2SV_blank>Vendor:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Sub-Type<S2SV_blank>%u\" , tok2str ( oui_values , \"Unknown\" , EXTRACT_24BITS ( tptr ) ) , EXTRACT_24BITS ( tptr ) , * ( tptr + 3 ) ) ) ; hexdump = TRUE ; break ; case CFM_TLV_SENDER_ID : { u_int chassis_id_type , chassis_id_length ; u_int mgmt_addr_length ; if ( cfm_tlv_len < 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>1)\" ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } chassis_id_length = * tptr ; tptr ++ ; tlen -- ; cfm_tlv_len -- ; if ( chassis_id_length ) { if ( cfm_tlv_len < 1 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } chassis_id_type = * tptr ; cfm_tlv_len -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Chassis-ID<S2SV_blank>Type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Chassis-ID<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( cfm_tlv_senderid_chassisid_values , \"Unknown\" , chassis_id_type ) , chassis_id_type , chassis_id_length ) ) ; if ( cfm_tlv_len < chassis_id_length ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } switch ( chassis_id_type ) { <S2SV_StartBug> case CFM_CHASSIS_ID_MAC_ADDRESS : <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>MAC<S2SV_blank>%s\" , etheraddr_string ( ndo , tptr + 1 ) ) ) ; break ; case CFM_CHASSIS_ID_NETWORK_ADDRESS : <S2SV_StartBug> hexdump |= cfm_network_addr_print ( ndo , tptr ) ; <S2SV_EndBug> break ; case CFM_CHASSIS_ID_INTERFACE_NAME : case CFM_CHASSIS_ID_INTERFACE_ALIAS : case CFM_CHASSIS_ID_LOCAL : case CFM_CHASSIS_ID_CHASSIS_COMPONENT : case CFM_CHASSIS_ID_PORT_COMPONENT : safeputs ( ndo , tptr + 1 , chassis_id_length ) ; break ; default : hexdump = TRUE ; break ; } cfm_tlv_len -= chassis_id_length ; tptr += 1 + chassis_id_length ; tlen -= 1 + chassis_id_length ; } if ( cfm_tlv_len == 0 ) { <S2SV_StartBug> return ; <S2SV_EndBug> } mgmt_addr_length = * tptr ; tptr ++ ; tlen -- ; cfm_tlv_len -- ; <S2SV_StartBug> if ( mgmt_addr_length ) { <S2SV_EndBug> if ( cfm_tlv_len < mgmt_addr_length ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } <S2SV_StartBug> cfm_tlv_len -= mgmt_addr_length ; <S2SV_EndBug> tptr += mgmt_addr_length ; tlen -= mgmt_addr_length ; if ( cfm_tlv_len < 1 ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; <S2SV_EndBug> return ; } mgmt_addr_length = * tptr ; tptr ++ ; tlen -- ; cfm_tlv_len -- ; <S2SV_StartBug> if ( mgmt_addr_length ) { <S2SV_EndBug> if ( cfm_tlv_len < mgmt_addr_length ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>(TLV<S2SV_blank>too<S2SV_blank>short)\" ) ) ; return ; } <S2SV_StartBug> cfm_tlv_len -= mgmt_addr_length ; <S2SV_EndBug> tptr += mgmt_addr_length ; tlen -= mgmt_addr_length ; } } break ; } case CFM_TLV_DATA : case CFM_TLV_REPLY_INGRESS : case CFM_TLV_REPLY_EGRESS : default : hexdump = TRUE ; break ; } if ( hexdump || ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , tlv_ptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , cfm_tlv_len ) ; <S2SV_StartBug> tptr += cfm_tlv_len ; <S2SV_EndBug> tlen -= cfm_tlv_len ; } return ; tooshort : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>is<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>exceeded<S2SV_blank>snapshot\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; goto next_tlv <S2SV_ModEnd> ; } chassis_id_length <S2SV_ModStart> ) ) ; goto next_tlv <S2SV_ModEnd> ; } chassis_id_type <S2SV_ModStart> ) ) ; goto next_tlv <S2SV_ModEnd> ; } switch <S2SV_ModStart> case CFM_CHASSIS_ID_MAC_ADDRESS : if ( chassis_id_length != ETHER_ADDR_LEN ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(invalid<S2SV_blank>MAC<S2SV_blank>address<S2SV_blank>length)\" ) ) ; hexdump = TRUE ; break ; } <S2SV_ModStart> ndo , tptr + 1 , chassis_id_length <S2SV_ModStart> 0 ) { break <S2SV_ModEnd> ; } mgmt_addr_length <S2SV_ModStart> cfm_tlv_len -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address<S2SV_blank>Domain<S2SV_blank>Length<S2SV_blank>%u\" , mgmt_addr_length ) ) ; <S2SV_ModStart> ) ) ; goto next_tlv <S2SV_ModEnd> ; } cfm_tlv_len <S2SV_ModStart> cfm_tlv_len -= mgmt_addr_length ; hex_print ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address<S2SV_blank>Domain:<S2SV_blank>\" , tptr , mgmt_addr_length ) <S2SV_ModStart> ( ndo , \"<S2SV_blank>(Management<S2SV_blank>Address<S2SV_blank>Length<S2SV_blank>is<S2SV_blank>missing)\" ) ) ; hexdump = TRUE ; break <S2SV_ModEnd> ; } mgmt_addr_length <S2SV_ModStart> cfm_tlv_len -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address<S2SV_blank>Length<S2SV_blank>%u\" , mgmt_addr_length ) ) ; <S2SV_ModStart> cfm_tlv_len -= mgmt_addr_length ; hex_print ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address:<S2SV_blank>\" , tptr , mgmt_addr_length ) <S2SV_ModStart> cfm_tlv_len ) ; next_tlv :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9389\n\n```\nCWE-000 static int jpc_dec_tiledecode ( jpc_dec_t * dec , jpc_dec_tile_t * tile ) { int i ; int j ; jpc_dec_tcomp_t * tcomp ; jpc_dec_rlvl_t * rlvl ; jpc_dec_band_t * band ; int compno ; int rlvlno ; int bandno ; int adjust ; int v ; jpc_dec_ccp_t * ccp ; jpc_dec_cmpt_t * cmpt ; if ( jpc_dec_decodecblks ( dec , tile ) ) { jas_eprintf ( \"jpc_dec_decodecblks<S2SV_blank>failed\\\\n\" ) ; return - 1 ; } for ( compno = 0 , tcomp = tile -> tcomps ; compno < dec -> numcomps ; ++ compno , ++ tcomp ) { ccp = & tile -> cp -> ccps [ compno ] ; for ( rlvlno = 0 , rlvl = tcomp -> rlvls ; rlvlno < tcomp -> numrlvls ; ++ rlvlno , ++ rlvl ) { if ( ! rlvl -> bands ) { continue ; } for ( bandno = 0 , band = rlvl -> bands ; bandno < rlvl -> numbands ; ++ bandno , ++ band ) { if ( ! band -> data ) { continue ; } jpc_undo_roi ( band -> data , band -> roishift , ccp -> roishift - band -> roishift , band -> numbps ) ; if ( tile -> realmode ) { jas_matrix_asl ( band -> data , JPC_FIX_FRACBITS ) ; jpc_dequantize ( band -> data , band -> absstepsize ) ; } } } } for ( compno = 0 , tcomp = tile -> tcomps ; compno < dec -> numcomps ; ++ compno , ++ tcomp ) { ccp = & tile -> cp -> ccps [ compno ] ; jpc_tsfb_synthesize ( tcomp -> tsfb , tcomp -> data ) ; } switch ( tile -> cp -> mctid ) { case JPC_MCT_RCT : if ( dec -> numcomps < 3 ) { <S2SV_StartBug> jas_eprintf ( \"RCT<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>three<S2SV_blank>components\\\\n\" ) ; <S2SV_EndBug> return - 1 ; } jpc_irct ( tile -> tcomps [ 0 ] . data , tile -> tcomps [ 1 ] . data , tile -> tcomps [ 2 ] . data ) ; break ; case JPC_MCT_ICT : if ( dec -> numcomps < 3 ) { jas_eprintf ( \"ICT<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>three<S2SV_blank>components\\\\n\" ) ; return - 1 ; } <S2SV_StartBug> jpc_iict ( tile -> tcomps [ 0 ] . data , tile -> tcomps [ 1 ] . data , <S2SV_EndBug> tile -> tcomps [ 2 ] . data ) ; break ; } if ( tile -> realmode ) { for ( compno = 0 , tcomp = tile -> tcomps ; compno < dec -> numcomps ; ++ compno , ++ tcomp ) { for ( i = 0 ; i < jas_matrix_numrows ( tcomp -> data ) ; ++ i ) { for ( j = 0 ; j < jas_matrix_numcols ( tcomp -> data ) ; ++ j ) { v = jas_matrix_get ( tcomp -> data , i , j ) ; v = jpc_fix_round ( v ) ; jas_matrix_set ( tcomp -> data , i , j , jpc_fixtoint ( v ) ) ; } } } } for ( compno = 0 , tcomp = tile -> tcomps , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ tcomp , ++ cmpt ) { adjust = cmpt -> sgnd ? 0 : ( 1 << ( cmpt -> prec - 1 ) ) ; for ( i = 0 ; i < jas_matrix_numrows ( tcomp -> data ) ; ++ i ) { for ( j = 0 ; j < jas_matrix_numcols ( tcomp -> data ) ; ++ j ) { * jas_matrix_getref ( tcomp -> data , i , j ) += adjust ; } } } for ( compno = 0 , tcomp = tile -> tcomps , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ tcomp , ++ cmpt ) { jpc_fix_t mn ; jpc_fix_t mx ; mn = cmpt -> sgnd ? ( - ( 1 << ( cmpt -> prec - 1 ) ) ) : ( 0 ) ; mx = cmpt -> sgnd ? ( ( 1 << ( cmpt -> prec - 1 ) ) - 1 ) : ( ( 1 << cmpt -> prec ) - 1 ) ; jas_matrix_clip ( tcomp -> data , mn , mx ) ; } for ( compno = 0 , tcomp = tile -> tcomps , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ tcomp , ++ cmpt ) { if ( jas_image_writecmpt ( dec -> image , compno , tcomp -> xstart - JPC_CEILDIV ( dec -> xstart , cmpt -> hstep ) , tcomp -> ystart - JPC_CEILDIV ( dec -> ystart , cmpt -> vstep ) , jas_matrix_numcols ( tcomp -> data ) , jas_matrix_numrows ( tcomp -> data ) , tcomp -> data ) ) { jas_eprintf ( \"write<S2SV_blank>component<S2SV_blank>failed\\\\n\" ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> jas_eprintf ( \"RCT<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>three<S2SV_blank>components\\\\n\" ) ; return - 1 ; } if ( ! jas_image_cmpt_domains_same ( dec -> image ) ) { jas_eprintf ( \"RCT<S2SV_blank>requires<S2SV_blank>all<S2SV_blank>components<S2SV_blank>have<S2SV_blank>the<S2SV_blank>same<S2SV_blank>domain\\\\n\" <S2SV_ModStart> 1 ; } if ( ! jas_image_cmpt_domains_same ( dec -> image ) ) { jas_eprintf ( \"RCT<S2SV_blank>requires<S2SV_blank>all<S2SV_blank>components<S2SV_blank>have<S2SV_blank>the<S2SV_blank>same<S2SV_blank>domain\\\\n\" ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-754(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1737\n\n```\nCWE-754 static int raw_cmd_copyin ( int cmd , void __user * param , struct floppy_raw_cmd * * rcmd ) { struct floppy_raw_cmd * ptr ; int ret ; int i ; * rcmd = NULL ; loop : ptr = kmalloc ( sizeof ( struct floppy_raw_cmd ) , GFP_USER ) ; if ( ! ptr ) return - ENOMEM ; * rcmd = ptr ; ret = copy_from_user ( ptr , param , sizeof ( * ptr ) ) ; <S2SV_StartBug> if ( ret ) <S2SV_EndBug> <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> ptr -> next = NULL ; ptr -> buffer_length = 0 ; param += sizeof ( struct floppy_raw_cmd ) ; if ( ptr -> cmd_count > 33 ) return - EINVAL ; for ( i = 0 ; i < 16 ; i ++ ) ptr -> reply [ i ] = 0 ; ptr -> resultcode = 0 ; <S2SV_StartBug> ptr -> kernel_data = NULL ; <S2SV_EndBug> if ( ptr -> flags & ( FD_RAW_READ | FD_RAW_WRITE ) ) { if ( ptr -> length <= 0 ) return - EINVAL ; ptr -> kernel_data = ( char * ) fd_dma_mem_alloc ( ptr -> length ) ; fallback_on_nodma_alloc ( & ptr -> kernel_data , ptr -> length ) ; if ( ! ptr -> kernel_data ) return - ENOMEM ; ptr -> buffer_length = ptr -> length ; } if ( ptr -> flags & FD_RAW_WRITE ) { ret = fd_copyin ( ptr -> data , ptr -> kernel_data , ptr -> length ) ; if ( ret ) return ret ; } if ( ptr -> flags & FD_RAW_MORE ) { rcmd = & ( ptr -> next ) ; ptr -> rate &= 0x43 ; goto loop ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ptr -> next = NULL ; ptr -> buffer_length = 0 ; ptr -> kernel_data = NULL ; <S2SV_ModStart> return - EFAULT <S2SV_ModEnd> ; param += <S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( ptr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4913\n\n```\nCWE-200 int get_rock_ridge_filename ( struct iso_directory_record * de , char * retname , struct inode * inode ) { struct rock_state rs ; struct rock_ridge * rr ; int sig ; int retnamlen = 0 ; int truncate = 0 ; int ret = 0 ; <S2SV_StartBug> if ( ! ISOFS_SB ( inode -> i_sb ) -> s_rock ) <S2SV_EndBug> return 0 ; * retname = 0 ; init_rock_state ( & rs , inode ) ; setup_rock_ridge ( de , inode , & rs ) ; repeat : while ( rs . len > 2 ) { rr = ( struct rock_ridge * ) rs . chr ; if ( rr -> len < 3 ) goto out ; sig = isonum_721 ( rs . chr ) ; if ( rock_check_overflow ( & rs , sig ) ) goto eio ; rs . chr += rr -> len ; rs . len -= rr -> len ; if ( rs . len < 0 ) goto out ; switch ( sig ) { case SIG ( 'R' , 'R' ) : if ( ( rr -> u . RR . flags [ 0 ] & RR_NM ) == 0 ) goto out ; break ; case SIG ( 'S' , 'P' ) : if ( check_sp ( rr , inode ) ) goto out ; break ; case SIG ( 'C' , 'E' ) : rs . cont_extent = isonum_733 ( rr -> u . CE . extent ) ; rs . cont_offset = isonum_733 ( rr -> u . CE . offset ) ; rs . cont_size = isonum_733 ( rr -> u . CE . size ) ; break ; case SIG ( 'N' , 'M' ) : if ( truncate ) break ; if ( rr -> len < 5 ) break ; if ( rr -> u . NM . flags & 6 ) break ; if ( rr -> u . NM . flags & ~ 1 ) { printk ( \"Unsupported<S2SV_blank>NM<S2SV_blank>flag<S2SV_blank>settings<S2SV_blank>(%d)\\\\n\" , rr -> u . NM . flags ) ; break ; } <S2SV_StartBug> if ( ( strlen ( retname ) + rr -> len - 5 ) >= 254 ) { <S2SV_EndBug> truncate = 1 ; break ; } <S2SV_StartBug> strncat ( retname , rr -> u . NM . name , rr -> len - 5 ) ; <S2SV_EndBug> <S2SV_StartBug> retnamlen += rr -> len - 5 ; <S2SV_EndBug> break ; case SIG ( 'R' , 'E' ) : kfree ( rs . buffer ) ; return - 1 ; default : break ; } } ret = rock_continue ( & rs ) ; if ( ret == 0 ) goto repeat ; if ( ret == 1 ) return retnamlen ; out : kfree ( rs . buffer ) ; return ret ; eio : ret = - EIO ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; char * p ; int len ; <S2SV_ModStart> break ; } len = <S2SV_ModEnd> rr -> len <S2SV_ModStart> len - 5 ; if ( retnamlen + len <S2SV_ModEnd> >= 254 ) <S2SV_ModStart> break ; } p = memchr ( rr -> u . NM . name , '\\\\0' , len ) ; if ( unlikely ( p ) ) len = p - rr -> u . NM . name ; memcpy ( retname + retnamlen <S2SV_ModEnd> , rr -> <S2SV_ModStart> . name , len <S2SV_ModEnd> ) ; retnamlen <S2SV_ModStart> ; retnamlen += len ; retname [ retnamlen ] = '\\\\0' <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 int main ( int argc , char * * argv ) { char * s , * inbuffer ; int length , error = 0 ; long num , i ; Inivars ( ) ; argc -- ; axohelp = * argv ++ ; if ( argc <= 0 ) { PrintHelp ( axohelp ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } while ( ( * argv ) [ 0 ] == '-' ) { s = * argv ; if ( s [ 1 ] == '-' ) { s ++ ; } if ( ( strcmp ( s , \"-h\" ) == 0 ) || ( strcmp ( s , \"-help\" ) == 0 ) ) { PrintHelp ( axohelp ) ; return 0 ; } else if ( ( strcmp ( s , \"-v\" ) == 0 ) || ( strcmp ( s , \"-version\" ) == 0 ) ) { fprintf ( stderr , \"%s<S2SV_blank>%d.%d\\\\n(release<S2SV_blank>date<S2SV_blank>%s)\\\\n\" \"Copyright<S2SV_blank>2018<S2SV_blank>John<S2SV_blank>Collins<S2SV_blank>and<S2SV_blank>Jos<S2SV_blank>Vermaseren.\\\\n\" \"License<S2SV_blank>GPLv3+:<S2SV_blank>GNU<S2SV_blank>GPL<S2SV_blank>version<S2SV_blank>3<S2SV_blank>or<S2SV_blank>later<S2SV_blank><https://gnu.org/licenses/gpl.html>.\\\\n\" \"There<S2SV_blank>is<S2SV_blank>NO<S2SV_blank>WARRANTY,<S2SV_blank>to<S2SV_blank>the<S2SV_blank>extent<S2SV_blank>permitted<S2SV_blank>by<S2SV_blank>law.\\\\n\" , axohelp , VERSION , SUBVERSION , VERSIONDATE ) ; return 0 ; } else if ( strcmp ( s , \"-V\" ) == 0 ) { VerboseFlag = 1 ; } else { fprintf ( stderr , \"%s:<S2SV_blank>Illegal<S2SV_blank>option<S2SV_blank>%s\\\\n\" , axohelp , * argv ) ; PrintHelpPrompt ( axohelp ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } argc -- ; argv ++ ; if ( argc <= 0 ) { fprintf ( stderr , \"%s:<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>arguments\\\\n\" , axohelp ) ; PrintHelpPrompt ( axohelp ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } } if ( argc != 1 ) { fprintf ( stderr , \"%s:<S2SV_blank>Too<S2SV_blank>many<S2SV_blank>arguments\\\\n\" , axohelp ) ; PrintHelpPrompt ( axohelp ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } s = * argv ; length = strlen ( s ) ; inname = strcpy ( malloc ( ( length + 5 ) * sizeof ( char ) ) , s ) ; outname = strcpy ( malloc ( ( length + 5 ) * sizeof ( char ) ) , s ) ; if ( ( length > 4 ) && ( strcmp ( s + length - 4 , \".ax1\" ) == 0 ) ) { outname [ length - 1 ] = '2' ; } else { strcpy ( inname + length , \".ax1\" ) ; strcpy ( outname + length , \".ax2\" ) ; } <S2SV_StartBug> if ( ( inbuffer = ReadInput ( inname ) ) == 0 ) return ( - 1 ) ; <S2SV_EndBug> if ( ( outfile = fopen ( outname , \"w\" ) ) == 0 ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>create<S2SV_blank>file<S2SV_blank>%s\\\\n\" , axohelp , outname ) ; <S2SV_StartBug> exit ( - 1 ) ; <S2SV_EndBug> } num = ScanForObjects ( inbuffer ) ; for ( i = 0 ; i < num ; i ++ ) { numobject = i + 1 ; if ( DoOneObject ( inputs [ i ] ) < 0 ) { error ++ ; } } fclose ( outfile ) ; if ( error > 0 ) { fprintf ( stderr , \"%s:<S2SV_blank>%d<S2SV_blank>objects<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>were<S2SV_blank>not<S2SV_blank>translated<S2SV_blank>correctly.\\\\n\" , axohelp , error , inname ) ; <S2SV_StartBug> return ( - 1 ) ; <S2SV_EndBug> } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return <S2SV_ModEnd> 1 ; } <S2SV_ModStart> ) ; return <S2SV_ModEnd> 1 ; } <S2SV_ModStart> ) ; return <S2SV_ModEnd> 1 ; } <S2SV_ModStart> ) ; return <S2SV_ModEnd> 1 ; } <S2SV_ModStart> ) return ( <S2SV_ModEnd> 1 ) ; <S2SV_ModStart> ; exit ( <S2SV_ModEnd> 1 ) ; <S2SV_ModStart> ; return ( <S2SV_ModEnd> 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12898\n\n```\nCWE-125 static const uint32_t * parserep ( netdissect_options * ndo , register const struct sunrpc_msg * rp , register u_int length ) { register const uint32_t * dp ; u_int len ; enum sunrpc_accept_stat astat ; dp = ( ( const uint32_t * ) & rp -> rm_reply ) + 1 ; ND_TCHECK ( dp [ 1 ] ) ; len = EXTRACT_32BITS ( & dp [ 1 ] ) ; if ( len >= length ) return ( NULL ) ; dp += ( len + ( 2 * sizeof ( uint32_t ) + 3 ) ) / sizeof ( uint32_t ) ; <S2SV_StartBug> ND_TCHECK2 ( dp [ 0 ] , 0 ) ; <S2SV_EndBug> astat = ( enum sunrpc_accept_stat ) EXTRACT_32BITS ( dp ) ; if ( astat != SUNRPC_SUCCESS ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( sunrpc_str , \"ar_stat<S2SV_blank>%d\" , astat ) ) ) ; nfserr = 1 ; return ( NULL ) ; } ND_TCHECK2 ( * dp , sizeof ( astat ) ) ; return ( ( const uint32_t * ) ( sizeof ( astat ) + ( ( const char * ) dp ) ) ) ; trunc : return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t ) ; ND_TCHECK <S2SV_ModEnd> ( dp [ <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ) ; astat\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-77 static int compile_search ( struct Context * ctx , const struct Pattern * pat , struct Buffer * buf ) { if ( do_search ( pat , 0 ) == 0 ) return 0 ; if ( pat -> not ) mutt_buffer_addstr ( buf , \"NOT<S2SV_blank>\" ) ; if ( pat -> child ) { int clauses ; clauses = do_search ( pat -> child , 1 ) ; if ( clauses > 0 ) { const struct Pattern * clause = pat -> child ; mutt_buffer_addch ( buf , '(' ) ; while ( clauses ) { if ( do_search ( clause , 0 ) ) { if ( pat -> op == MUTT_OR && clauses > 1 ) mutt_buffer_addstr ( buf , \"OR<S2SV_blank>\" ) ; clauses -- ; if ( compile_search ( ctx , clause , buf ) < 0 ) return - 1 ; if ( clauses ) mutt_buffer_addch ( buf , '<S2SV_blank>' ) ; } clause = clause -> next ; } mutt_buffer_addch ( buf , ')' ) ; } } else { char term [ STRING ] ; char * delim = NULL ; switch ( pat -> op ) { case MUTT_HEADER : mutt_buffer_addstr ( buf , \"HEADER<S2SV_blank>\" ) ; delim = strchr ( pat -> p . str , ':' ) ; if ( ! delim ) { mutt_error ( _ ( \"Header<S2SV_blank>search<S2SV_blank>without<S2SV_blank>header<S2SV_blank>name:<S2SV_blank>%s\" ) , pat -> p . str ) ; return - 1 ; } * delim = '\\\\0' ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , pat -> p . str ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; mutt_buffer_addch ( buf , '<S2SV_blank>' ) ; * delim = ':' ; delim ++ ; SKIPWS ( delim ) ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , delim ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; break ; case MUTT_BODY : mutt_buffer_addstr ( buf , \"BODY<S2SV_blank>\" ) ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , pat -> p . str ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; break ; case MUTT_WHOLE_MSG : mutt_buffer_addstr ( buf , \"TEXT<S2SV_blank>\" ) ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , pat -> p . str ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; break ; case MUTT_SERVERSEARCH : { struct ImapData * idata = ctx -> data ; if ( ! mutt_bit_isset ( idata -> capabilities , X_GM_EXT1 ) ) { mutt_error ( _ ( \"Server-side<S2SV_blank>custom<S2SV_blank>search<S2SV_blank>not<S2SV_blank>supported:<S2SV_blank>%s\" ) , pat -> p . str ) ; return - 1 ; } } mutt_buffer_addstr ( buf , \"X-GM-RAW<S2SV_blank>\" ) ; <S2SV_StartBug> imap_quote_string ( term , sizeof ( term ) , pat -> p . str ) ; <S2SV_EndBug> mutt_buffer_addstr ( buf , term ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p . str , false <S2SV_ModStart> ) , delim , false <S2SV_ModStart> p . str , false <S2SV_ModStart> p . str , false <S2SV_ModStart> p . str , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2119\n\n```\nCWE-119 static int zerocopy_sg_from_iovec ( struct sk_buff * skb , const struct iovec * from , int offset , size_t count ) { int len = iov_length ( from , count ) - offset ; int copy = skb_headlen ( skb ) ; int size , offset1 = 0 ; int i = 0 ; while ( count && ( offset >= from -> iov_len ) ) { offset -= from -> iov_len ; ++ from ; -- count ; } while ( count && ( copy > 0 ) ) { size = min_t ( unsigned int , copy , from -> iov_len - offset ) ; if ( copy_from_user ( skb -> data + offset1 , from -> iov_base + offset , size ) ) return - EFAULT ; if ( copy > size ) { ++ from ; -- count ; offset = 0 ; } else offset += size ; copy -= size ; offset1 += size ; } if ( len == offset1 ) return 0 ; while ( count -- ) { struct page * page [ MAX_SKB_FRAGS ] ; int num_pages ; unsigned long base ; unsigned long truesize ; len = from -> iov_len - offset ; if ( ! len ) { offset = 0 ; ++ from ; continue ; } base = ( unsigned long ) from -> iov_base + offset ; size = ( ( base & ~ PAGE_MASK ) + len + ~ PAGE_MASK ) >> PAGE_SHIFT ; <S2SV_StartBug> num_pages = get_user_pages_fast ( base , size , 0 , & page [ i ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( num_pages != size ) || <S2SV_EndBug> ( num_pages > MAX_SKB_FRAGS - skb_shinfo ( skb ) -> nr_frags ) ) { for ( i = 0 ; i < num_pages ; i ++ ) put_page ( page [ i ] ) ; return - EFAULT ; } truesize = size * PAGE_SIZE ; skb -> data_len += len ; skb -> len += len ; skb -> truesize += truesize ; atomic_add ( truesize , & skb -> sk -> sk_wmem_alloc ) ; while ( len ) { int off = base & ~ PAGE_MASK ; int size = min_t ( int , len , PAGE_SIZE - off ) ; __skb_fill_page_desc ( skb , i , page [ i ] , off , size ) ; skb_shinfo ( skb ) -> nr_frags ++ ; base += size ; len -= size ; i ++ ; } offset = 0 ; ++ from ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> >> PAGE_SHIFT ; if ( i + size > MAX_SKB_FRAGS ) return - EMSGSIZE ; <S2SV_ModStart> ; if ( <S2SV_ModEnd> num_pages != size <S2SV_ModStart> num_pages != size <S2SV_ModEnd> ) { for\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static INLINE void right_shift_8x8 ( __m128i * res , int const bit ) { <S2SV_EndBug> const __m128i kOne = _mm_set1_epi16 ( 1 ) ; const int bit_m02 = bit - 2 ; __m128i sign0 = _mm_srai_epi16 ( res [ 0 ] , 15 ) ; __m128i sign1 = _mm_srai_epi16 ( res [ 1 ] , 15 ) ; __m128i sign2 = _mm_srai_epi16 ( res [ 2 ] , 15 ) ; __m128i sign3 = _mm_srai_epi16 ( res [ 3 ] , 15 ) ; __m128i sign4 = _mm_srai_epi16 ( res [ 4 ] , 15 ) ; __m128i sign5 = _mm_srai_epi16 ( res [ 5 ] , 15 ) ; __m128i sign6 = _mm_srai_epi16 ( res [ 6 ] , 15 ) ; __m128i sign7 = _mm_srai_epi16 ( res [ 7 ] , 15 ) ; <S2SV_StartBug> if ( bit_m02 >= 0 ) { <S2SV_EndBug> __m128i k_const_rounding = _mm_slli_epi16 ( kOne , bit_m02 ) ; res [ 0 ] = _mm_add_epi16 ( res [ 0 ] , k_const_rounding ) ; res [ 1 ] = _mm_add_epi16 ( res [ 1 ] , k_const_rounding ) ; res [ 2 ] = _mm_add_epi16 ( res [ 2 ] , k_const_rounding ) ; res [ 3 ] = _mm_add_epi16 ( res [ 3 ] , k_const_rounding ) ; res [ 4 ] = _mm_add_epi16 ( res [ 4 ] , k_const_rounding ) ; res [ 5 ] = _mm_add_epi16 ( res [ 5 ] , k_const_rounding ) ; res [ 6 ] = _mm_add_epi16 ( res [ 6 ] , k_const_rounding ) ; res [ 7 ] = _mm_add_epi16 ( res [ 7 ] , k_const_rounding ) ; } res [ 0 ] = _mm_sub_epi16 ( res [ 0 ] , sign0 ) ; res [ 1 ] = _mm_sub_epi16 ( res [ 1 ] , sign1 ) ; res [ 2 ] = _mm_sub_epi16 ( res [ 2 ] , sign2 ) ; res [ 3 ] = _mm_sub_epi16 ( res [ 3 ] , sign3 ) ; res [ 4 ] = _mm_sub_epi16 ( res [ 4 ] , sign4 ) ; res [ 5 ] = _mm_sub_epi16 ( res [ 5 ] , sign5 ) ; res [ 6 ] = _mm_sub_epi16 ( res [ 6 ] , sign6 ) ; res [ 7 ] = _mm_sub_epi16 ( res [ 7 ] , sign7 ) ; <S2SV_StartBug> res [ 0 ] = _mm_srai_epi16 ( res [ 0 ] , bit ) ; <S2SV_EndBug> res [ 1 ] = _mm_srai_epi16 ( res [ 1 ] , bit ) ; res [ 2 ] = _mm_srai_epi16 ( res [ 2 ] , bit ) ; res [ 3 ] = _mm_srai_epi16 ( res [ 3 ] , bit ) ; res [ 4 ] = _mm_srai_epi16 ( res [ 4 ] , bit ) ; res [ 5 ] = _mm_srai_epi16 ( res [ 5 ] , bit ) ; res [ 6 ] = _mm_srai_epi16 ( res [ 6 ] , bit ) ; res [ 7 ] = _mm_srai_epi16 ( res [ 7 ] , bit ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * res , const int bit ) { <S2SV_ModEnd> __m128i sign0 = <S2SV_ModStart> ; if ( bit == 2 ) { const __m128i const_rounding = _mm_set1_epi16 ( 1 ) ; res [ 0 ] = _mm_add_epi16 ( res [ 0 ] , const_rounding ) ; res [ 1 ] = _mm_add_epi16 ( res [ 1 ] , const_rounding ) ; res [ 2 ] = _mm_add_epi16 ( res [ 2 ] , const_rounding ) ; res [ 3 ] = _mm_add_epi16 ( res [ 3 ] , const_rounding ) ; res [ 4 ] = _mm_add_epi16 ( res [ 4 ] , const_rounding ) ; res [ 5 ] = _mm_add_epi16 ( res [ 5 ] , const_rounding ) ; res [ 6 ] = _mm_add_epi16 ( res [ 6 ] , const_rounding ) ; res [ 7 ] = _mm_add_epi16 ( res [ 7 ] , const_rounding <S2SV_ModEnd> ) ; } <S2SV_ModStart> sign7 ) ; if ( bit == 1 ) { res [ 0 ] = _mm_srai_epi16 ( res [ 0 ] , 1 ) ; res [ 1 ] = _mm_srai_epi16 ( res [ 1 ] , 1 ) ; res [ 2 ] = _mm_srai_epi16 ( res [ 2 ] , 1 ) ; res [ 3 ] = _mm_srai_epi16 ( res [ 3 ] , 1 ) ; res [ 4 ] = _mm_srai_epi16 ( res [ 4 ] , 1 ) ; res [ 5 ] = _mm_srai_epi16 ( res [ 5 ] , 1 ) ; res [ 6 ] = _mm_srai_epi16 ( res [ 6 ] , 1 ) ; res [ 7 ] = _mm_srai_epi16 ( res [ 7 ] , 1 ) ; } else { res [ 0 ] = _mm_srai_epi16 ( res [ 0 ] , 2 ) ; res [ 1 ] = _mm_srai_epi16 ( res [ 1 ] , 2 ) ; res [ 2 ] = _mm_srai_epi16 ( res [ 2 ] , 2 ) ; res [ 3 ] = _mm_srai_epi16 ( res [ 3 ] , 2 ) ; res [ 4 ] = _mm_srai_epi16 ( res [ 4 ] , 2 ) ; res [ 5 ] = _mm_srai_epi16 ( res [ 5 ] , 2 ) ; res [ 6 ] = _mm_srai_epi16 ( res [ 6 ] , 2 ) ; res [ 7 ] = _mm_srai_epi16 ( res [ 7 ] , 2 ) ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7509\n\n```\nCWE-20 int ext4_orphan_add ( handle_t * handle , struct inode * inode ) { struct super_block * sb = inode -> i_sb ; struct ext4_iloc iloc ; int err = 0 , rc ; <S2SV_StartBug> if ( ! ext4_handle_valid ( handle ) ) <S2SV_EndBug> return 0 ; mutex_lock ( & EXT4_SB ( sb ) -> s_orphan_lock ) ; if ( ! list_empty ( & EXT4_I ( inode ) -> i_orphan ) ) goto out_unlock ; J_ASSERT ( ( S_ISREG ( inode -> i_mode ) || S_ISDIR ( inode -> i_mode ) || S_ISLNK ( inode -> i_mode ) ) || inode -> i_nlink == 0 ) ; BUFFER_TRACE ( EXT4_SB ( sb ) -> s_sbh , \"get_write_access\" ) ; err = ext4_journal_get_write_access ( handle , EXT4_SB ( sb ) -> s_sbh ) ; if ( err ) goto out_unlock ; err = ext4_reserve_inode_write ( handle , inode , & iloc ) ; if ( err ) goto out_unlock ; if ( NEXT_ORPHAN ( inode ) && NEXT_ORPHAN ( inode ) <= ( le32_to_cpu ( EXT4_SB ( sb ) -> s_es -> s_inodes_count ) ) ) goto mem_insert ; NEXT_ORPHAN ( inode ) = le32_to_cpu ( EXT4_SB ( sb ) -> s_es -> s_last_orphan ) ; EXT4_SB ( sb ) -> s_es -> s_last_orphan = cpu_to_le32 ( inode -> i_ino ) ; err = ext4_handle_dirty_super ( handle , sb ) ; rc = ext4_mark_iloc_dirty ( handle , inode , & iloc ) ; if ( ! err ) err = rc ; mem_insert : if ( ! err ) list_add ( & EXT4_I ( inode ) -> i_orphan , & EXT4_SB ( sb ) -> s_orphan ) ; jbd_debug ( 4 , \"superblock<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%lu\\\\n\" , inode -> i_ino ) ; jbd_debug ( 4 , \"orphan<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%d\\\\n\" , inode -> i_ino , NEXT_ORPHAN ( inode ) ) ; out_unlock : mutex_unlock ( & EXT4_SB ( sb ) -> s_orphan_lock ) ; ext4_std_error ( inode -> i_sb , err ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! EXT4_SB ( sb ) -> s_journal <S2SV_ModEnd> ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19052\n\n```\nCWE-000 PHYSICALPATH_FUNC ( mod_alias_physical_handler ) { plugin_data * p = p_d ; int uri_len , basedir_len ; char * uri_ptr ; size_t k ; if ( buffer_is_empty ( con -> physical . path ) ) return HANDLER_GO_ON ; mod_alias_patch_connection ( srv , con , p ) ; basedir_len = buffer_string_length ( con -> physical . basedir ) ; if ( '/' == con -> physical . basedir -> ptr [ basedir_len - 1 ] ) -- basedir_len ; uri_len = buffer_string_length ( con -> physical . path ) - basedir_len ; uri_ptr = con -> physical . path -> ptr + basedir_len ; for ( k = 0 ; k < p -> conf . alias -> used ; k ++ ) { data_string * ds = ( data_string * ) p -> conf . alias -> data [ k ] ; int alias_len = buffer_string_length ( ds -> key ) ; if ( alias_len > uri_len ) continue ; if ( buffer_is_empty ( ds -> key ) ) continue ; if ( 0 == ( con -> conf . force_lowercase_filenames ? strncasecmp ( uri_ptr , ds -> key -> ptr , alias_len ) : strncmp ( uri_ptr , ds -> key -> ptr , alias_len ) ) ) { <S2SV_StartBug> buffer_copy_buffer ( con -> physical . basedir , ds -> value ) ; <S2SV_EndBug> buffer_copy_buffer ( srv -> tmp_buf , ds -> value ) ; buffer_append_string ( srv -> tmp_buf , uri_ptr + alias_len ) ; buffer_copy_buffer ( con -> physical . path , srv -> tmp_buf ) ; return HANDLER_GO_ON ; } } return HANDLER_GO_ON ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( uri_ptr [ alias_len ] == '.' ) { char * s = uri_ptr + alias_len + 1 ; if ( * s == '.' ) ++ s ; if ( * s == '/' || * s == '\\\\0' ) { size_t vlen = buffer_string_length ( ds -> value ) ; if ( 0 != alias_len && ds -> key -> ptr [ alias_len - 1 ] != '/' && 0 != vlen && ds -> value -> ptr [ vlen - 1 ] == '/' ) { con -> http_status = 403 ; return HANDLER_FINISHED ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8890\n\n```\nCWE-415 struct sock * inet_csk_clone_lock ( const struct sock * sk , const struct request_sock * req , const gfp_t priority ) { struct sock * newsk = sk_clone_lock ( sk , priority ) ; if ( newsk ) { struct inet_connection_sock * newicsk = inet_csk ( newsk ) ; newsk -> sk_state = TCP_SYN_RECV ; newicsk -> icsk_bind_hash = NULL ; inet_sk ( newsk ) -> inet_dport = inet_rsk ( req ) -> ir_rmt_port ; inet_sk ( newsk ) -> inet_num = inet_rsk ( req ) -> ir_num ; inet_sk ( newsk ) -> inet_sport = htons ( inet_rsk ( req ) -> ir_num ) ; newsk -> sk_write_space = sk_stream_write_space ; sock_reset_flag ( newsk , SOCK_RCU_FREE ) ; <S2SV_StartBug> newsk -> sk_mark = inet_rsk ( req ) -> ir_mark ; <S2SV_EndBug> atomic64_set ( & newsk -> sk_cookie , atomic64_read ( & inet_rsk ( req ) -> ir_cookie ) ) ; newicsk -> icsk_retransmits = 0 ; newicsk -> icsk_backoff = 0 ; newicsk -> icsk_probes_out = 0 ; memset ( & newicsk -> icsk_accept_queue , 0 , sizeof ( newicsk -> icsk_accept_queue ) ) ; security_inet_csk_clone ( newsk , req ) ; } return newsk ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SOCK_RCU_FREE ) ; inet_sk ( newsk ) -> mc_list = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 static __be32 nfsd4_encode_fattr ( struct xdr_stream * xdr , struct svc_fh * fhp , struct svc_export * exp , struct dentry * dentry , u32 * bmval , struct svc_rqst * rqstp , int ignore_crossmnt ) { u32 bmval0 = bmval [ 0 ] ; u32 bmval1 = bmval [ 1 ] ; u32 bmval2 = bmval [ 2 ] ; struct kstat stat ; struct svc_fh * tempfh = NULL ; struct kstatfs statfs ; __be32 * p ; int starting_len = xdr -> buf -> len ; int attrlen_offset ; __be32 attrlen ; u32 dummy ; u64 dummy64 ; u32 rdattr_err = 0 ; __be32 status ; int err ; struct nfs4_acl * acl = NULL ; void * context = NULL ; int contextlen ; bool contextsupport = false ; struct nfsd4_compoundres * resp = rqstp -> rq_resp ; u32 minorversion = resp -> cstate . minorversion ; struct path path = { . mnt = exp -> ex_path . mnt , . dentry = dentry , } ; struct nfsd_net * nn = net_generic ( SVC_NET ( rqstp ) , nfsd_net_id ) ; BUG_ON ( bmval1 & NFSD_WRITEONLY_ATTRS_WORD1 ) ; BUG_ON ( ! nfsd_attrs_supported ( minorversion , bmval ) ) ; if ( exp -> ex_fslocs . migrated ) { status = fattr_handle_absent_fs ( & bmval0 , & bmval1 , & bmval2 , & rdattr_err ) ; if ( status ) goto out ; } err = vfs_getattr ( & path , & stat , STATX_BASIC_STATS , AT_STATX_SYNC_AS_STAT ) ; if ( err ) goto out_nfserr ; if ( ( bmval0 & ( FATTR4_WORD0_FILES_AVAIL | FATTR4_WORD0_FILES_FREE | FATTR4_WORD0_FILES_TOTAL | FATTR4_WORD0_MAXNAME ) ) || ( bmval1 & ( FATTR4_WORD1_SPACE_AVAIL | FATTR4_WORD1_SPACE_FREE | FATTR4_WORD1_SPACE_TOTAL ) ) ) { err = vfs_statfs ( & path , & statfs ) ; if ( err ) goto out_nfserr ; } if ( ( bmval0 & ( FATTR4_WORD0_FILEHANDLE | FATTR4_WORD0_FSID ) ) && ! fhp ) { tempfh = kmalloc ( sizeof ( struct svc_fh ) , GFP_KERNEL ) ; status = nfserr_jukebox ; if ( ! tempfh ) goto out ; fh_init ( tempfh , NFS4_FHSIZE ) ; status = fh_compose ( tempfh , exp , dentry , NULL ) ; if ( status ) goto out ; fhp = tempfh ; } if ( bmval0 & FATTR4_WORD0_ACL ) { err = nfsd4_get_nfs4_acl ( rqstp , dentry , & acl ) ; if ( err == - EOPNOTSUPP ) bmval0 &= ~ FATTR4_WORD0_ACL ; else if ( err == - EINVAL ) { status = nfserr_attrnotsupp ; goto out ; } else if ( err != 0 ) goto out_nfserr ; } # ifdef CONFIG_NFSD_V4_SECURITY_LABEL if ( ( bmval2 & FATTR4_WORD2_SECURITY_LABEL ) || bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS ) { if ( exp -> ex_flags & NFSEXP_SECURITY_LABEL ) err = security_inode_getsecctx ( d_inode ( dentry ) , & context , & contextlen ) ; else err = - EOPNOTSUPP ; contextsupport = ( err == 0 ) ; if ( bmval2 & FATTR4_WORD2_SECURITY_LABEL ) { if ( err == - EOPNOTSUPP ) bmval2 &= ~ FATTR4_WORD2_SECURITY_LABEL ; else if ( err ) goto out_nfserr ; } } # endif status = nfsd4_encode_bitmap ( xdr , bmval0 , bmval1 , bmval2 ) ; if ( status ) goto out ; attrlen_offset = xdr -> buf -> len ; p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; p ++ ; if ( bmval0 & FATTR4_WORD0_SUPPORTED_ATTRS ) { u32 supp [ 3 ] ; memcpy ( supp , nfsd_suppattrs [ minorversion ] , sizeof ( supp ) ) ; if ( ! IS_POSIXACL ( dentry -> d_inode ) ) supp [ 0 ] &= ~ FATTR4_WORD0_ACL ; if ( ! contextsupport ) supp [ 2 ] &= ~ FATTR4_WORD2_SECURITY_LABEL ; if ( ! supp [ 2 ] ) { p = xdr_reserve_space ( xdr , 12 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 2 ) ; * p ++ = cpu_to_be32 ( supp [ 0 ] ) ; * p ++ = cpu_to_be32 ( supp [ 1 ] ) ; } else { p = xdr_reserve_space ( xdr , 16 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 3 ) ; * p ++ = cpu_to_be32 ( supp [ 0 ] ) ; * p ++ = cpu_to_be32 ( supp [ 1 ] ) ; * p ++ = cpu_to_be32 ( supp [ 2 ] ) ; } } if ( bmval0 & FATTR4_WORD0_TYPE ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; dummy = nfs4_file_type ( stat . mode ) ; if ( dummy == NF4BAD ) { status = nfserr_serverfault ; goto out ; } * p ++ = cpu_to_be32 ( dummy ) ; } if ( bmval0 & FATTR4_WORD0_FH_EXPIRE_TYPE ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; if ( exp -> ex_flags & NFSEXP_NOSUBTREECHECK ) * p ++ = cpu_to_be32 ( NFS4_FH_PERSISTENT ) ; else * p ++ = cpu_to_be32 ( NFS4_FH_PERSISTENT | NFS4_FH_VOL_RENAME ) ; } if ( bmval0 & FATTR4_WORD0_CHANGE ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = encode_change ( p , & stat , d_inode ( dentry ) , exp ) ; } if ( bmval0 & FATTR4_WORD0_SIZE ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , stat . size ) ; } if ( bmval0 & FATTR4_WORD0_LINK_SUPPORT ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 1 ) ; } if ( bmval0 & FATTR4_WORD0_SYMLINK_SUPPORT ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 1 ) ; } if ( bmval0 & FATTR4_WORD0_NAMED_ATTR ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 0 ) ; } if ( bmval0 & FATTR4_WORD0_FSID ) { p = xdr_reserve_space ( xdr , 16 ) ; if ( ! p ) goto out_resource ; if ( exp -> ex_fslocs . migrated ) { p = xdr_encode_hyper ( p , NFS4_REFERRAL_FSID_MAJOR ) ; p = xdr_encode_hyper ( p , NFS4_REFERRAL_FSID_MINOR ) ; } else switch ( fsid_source ( fhp ) ) { case FSIDSOURCE_FSID : p = xdr_encode_hyper ( p , ( u64 ) exp -> ex_fsid ) ; p = xdr_encode_hyper ( p , ( u64 ) 0 ) ; break ; case FSIDSOURCE_DEV : * p ++ = cpu_to_be32 ( 0 ) ; * p ++ = cpu_to_be32 ( MAJOR ( stat . dev ) ) ; * p ++ = cpu_to_be32 ( 0 ) ; * p ++ = cpu_to_be32 ( MINOR ( stat . dev ) ) ; break ; case FSIDSOURCE_UUID : p = xdr_encode_opaque_fixed ( p , exp -> ex_uuid , EX_UUID_LEN ) ; break ; } } if ( bmval0 & FATTR4_WORD0_UNIQUE_HANDLES ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 0 ) ; } if ( bmval0 & FATTR4_WORD0_LEASE_TIME ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( nn -> nfsd4_lease ) ; } if ( bmval0 & FATTR4_WORD0_RDATTR_ERROR ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( rdattr_err ) ; } if ( bmval0 & FATTR4_WORD0_ACL ) { struct nfs4_ace * ace ; if ( acl == NULL ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 0 ) ; goto out_acl ; } p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( acl -> naces ) ; for ( ace = acl -> aces ; ace < acl -> aces + acl -> naces ; ace ++ ) { p = xdr_reserve_space ( xdr , 4 * 3 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( ace -> type ) ; * p ++ = cpu_to_be32 ( ace -> flag ) ; * p ++ = cpu_to_be32 ( ace -> access_mask & NFS4_ACE_MASK_ALL ) ; status = nfsd4_encode_aclname ( xdr , rqstp , ace ) ; if ( status ) goto out ; } } out_acl : if ( bmval0 & FATTR4_WORD0_ACLSUPPORT ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( IS_POSIXACL ( dentry -> d_inode ) ? ACL4_SUPPORT_ALLOW_ACL | ACL4_SUPPORT_DENY_ACL : 0 ) ; } if ( bmval0 & FATTR4_WORD0_CANSETTIME ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 1 ) ; } if ( bmval0 & FATTR4_WORD0_CASE_INSENSITIVE ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 0 ) ; } if ( bmval0 & FATTR4_WORD0_CASE_PRESERVING ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 1 ) ; } if ( bmval0 & FATTR4_WORD0_CHOWN_RESTRICTED ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 1 ) ; } if ( bmval0 & FATTR4_WORD0_FILEHANDLE ) { p = xdr_reserve_space ( xdr , fhp -> fh_handle . fh_size + 4 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_opaque ( p , & fhp -> fh_handle . fh_base , fhp -> fh_handle . fh_size ) ; } if ( bmval0 & FATTR4_WORD0_FILEID ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , stat . ino ) ; } if ( bmval0 & FATTR4_WORD0_FILES_AVAIL ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , ( u64 ) statfs . f_ffree ) ; } if ( bmval0 & FATTR4_WORD0_FILES_FREE ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , ( u64 ) statfs . f_ffree ) ; } if ( bmval0 & FATTR4_WORD0_FILES_TOTAL ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , ( u64 ) statfs . f_files ) ; } if ( bmval0 & FATTR4_WORD0_FS_LOCATIONS ) { status = nfsd4_encode_fs_locations ( xdr , rqstp , exp ) ; if ( status ) goto out ; } if ( bmval0 & FATTR4_WORD0_HOMOGENEOUS ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 1 ) ; } if ( bmval0 & FATTR4_WORD0_MAXFILESIZE ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , exp -> ex_path . mnt -> mnt_sb -> s_maxbytes ) ; } if ( bmval0 & FATTR4_WORD0_MAXLINK ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 255 ) ; } if ( bmval0 & FATTR4_WORD0_MAXNAME ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( statfs . f_namelen ) ; } if ( bmval0 & FATTR4_WORD0_MAXREAD ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , ( u64 ) svc_max_payload ( rqstp ) ) ; } if ( bmval0 & FATTR4_WORD0_MAXWRITE ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , ( u64 ) svc_max_payload ( rqstp ) ) ; } if ( bmval1 & FATTR4_WORD1_MODE ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( stat . mode & S_IALLUGO ) ; } if ( bmval1 & FATTR4_WORD1_NO_TRUNC ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 1 ) ; } if ( bmval1 & FATTR4_WORD1_NUMLINKS ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( stat . nlink ) ; } if ( bmval1 & FATTR4_WORD1_OWNER ) { status = nfsd4_encode_user ( xdr , rqstp , stat . uid ) ; if ( status ) goto out ; } if ( bmval1 & FATTR4_WORD1_OWNER_GROUP ) { status = nfsd4_encode_group ( xdr , rqstp , stat . gid ) ; if ( status ) goto out ; } if ( bmval1 & FATTR4_WORD1_RAWDEV ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( ( u32 ) MAJOR ( stat . rdev ) ) ; * p ++ = cpu_to_be32 ( ( u32 ) MINOR ( stat . rdev ) ) ; } if ( bmval1 & FATTR4_WORD1_SPACE_AVAIL ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; dummy64 = ( u64 ) statfs . f_bavail * ( u64 ) statfs . f_bsize ; p = xdr_encode_hyper ( p , dummy64 ) ; } if ( bmval1 & FATTR4_WORD1_SPACE_FREE ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; dummy64 = ( u64 ) statfs . f_bfree * ( u64 ) statfs . f_bsize ; p = xdr_encode_hyper ( p , dummy64 ) ; } if ( bmval1 & FATTR4_WORD1_SPACE_TOTAL ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; dummy64 = ( u64 ) statfs . f_blocks * ( u64 ) statfs . f_bsize ; p = xdr_encode_hyper ( p , dummy64 ) ; } if ( bmval1 & FATTR4_WORD1_SPACE_USED ) { p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; dummy64 = ( u64 ) stat . blocks << 9 ; p = xdr_encode_hyper ( p , dummy64 ) ; } if ( bmval1 & FATTR4_WORD1_TIME_ACCESS ) { p = xdr_reserve_space ( xdr , 12 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , ( s64 ) stat . atime . tv_sec ) ; * p ++ = cpu_to_be32 ( stat . atime . tv_nsec ) ; } if ( bmval1 & FATTR4_WORD1_TIME_DELTA ) { p = xdr_reserve_space ( xdr , 12 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( 0 ) ; * p ++ = cpu_to_be32 ( 1 ) ; * p ++ = cpu_to_be32 ( 0 ) ; } if ( bmval1 & FATTR4_WORD1_TIME_METADATA ) { p = xdr_reserve_space ( xdr , 12 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , ( s64 ) stat . ctime . tv_sec ) ; * p ++ = cpu_to_be32 ( stat . ctime . tv_nsec ) ; } if ( bmval1 & FATTR4_WORD1_TIME_MODIFY ) { p = xdr_reserve_space ( xdr , 12 ) ; if ( ! p ) goto out_resource ; p = xdr_encode_hyper ( p , ( s64 ) stat . mtime . tv_sec ) ; * p ++ = cpu_to_be32 ( stat . mtime . tv_nsec ) ; } if ( bmval1 & FATTR4_WORD1_MOUNTED_ON_FILEID ) { struct kstat parent_stat ; u64 ino = stat . ino ; p = xdr_reserve_space ( xdr , 8 ) ; if ( ! p ) goto out_resource ; if ( ignore_crossmnt == 0 && dentry == exp -> ex_path . mnt -> mnt_root ) { err = get_parent_attributes ( exp , & parent_stat ) ; if ( err ) goto out_nfserr ; ino = parent_stat . ino ; } p = xdr_encode_hyper ( p , ino ) ; } # ifdef CONFIG_NFSD_PNFS if ( bmval1 & FATTR4_WORD1_FS_LAYOUT_TYPES ) { status = nfsd4_encode_layout_types ( xdr , exp -> ex_layout_types ) ; if ( status ) goto out ; } if ( bmval2 & FATTR4_WORD2_LAYOUT_TYPES ) { status = nfsd4_encode_layout_types ( xdr , exp -> ex_layout_types ) ; if ( status ) goto out ; } if ( bmval2 & FATTR4_WORD2_LAYOUT_BLKSIZE ) { p = xdr_reserve_space ( xdr , 4 ) ; if ( ! p ) goto out_resource ; * p ++ = cpu_to_be32 ( stat . blksize ) ; } # endif if ( bmval2 & FATTR4_WORD2_SUPPATTR_EXCLCREAT ) { <S2SV_StartBug> status = nfsd4_encode_bitmap ( xdr , NFSD_SUPPATTR_EXCLCREAT_WORD0 , <S2SV_EndBug> NFSD_SUPPATTR_EXCLCREAT_WORD1 , NFSD_SUPPATTR_EXCLCREAT_WORD2 ) ; if ( status ) goto out ; } if ( bmval2 & FATTR4_WORD2_SECURITY_LABEL ) { status = nfsd4_encode_security_label ( xdr , rqstp , context , contextlen ) ; if ( status ) goto out ; } attrlen = htonl ( xdr -> buf -> len - attrlen_offset - 4 ) ; write_bytes_to_xdr_buf ( xdr -> buf , attrlen_offset , & attrlen , 4 ) ; status = nfs_ok ; out : # ifdef CONFIG_NFSD_V4_SECURITY_LABEL if ( context ) security_release_secctx ( context , contextlen ) ; # endif kfree ( acl ) ; if ( tempfh ) { fh_put ( tempfh ) ; kfree ( tempfh ) ; } if ( status ) xdr_truncate_encode ( xdr , starting_len ) ; return status ; out_nfserr : status = nfserrno ( err ) ; goto out ; out_resource : status = nfserr_resource ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FATTR4_WORD2_SUPPATTR_EXCLCREAT ) { u32 supp [ 3 ] ; memcpy ( supp , nfsd_suppattrs [ minorversion ] , sizeof ( supp ) ) ; supp [ 0 ] &= NFSD_SUPPATTR_EXCLCREAT_WORD0 ; supp [ 1 ] &= NFSD_SUPPATTR_EXCLCREAT_WORD1 ; supp [ 2 ] &= NFSD_SUPPATTR_EXCLCREAT_WORD2 ; <S2SV_ModStart> ( xdr , supp [ 0 ] , supp [ 1 ] , supp [ 2 ] <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18922\n\n```\nCWE-787 rfbBool webSocketsHasDataInBuffer ( rfbClientPtr cl ) { ws_ctx_t * wsctx = ( ws_ctx_t * ) cl -> wsctx ; <S2SV_StartBug> if ( wsctx && wsctx -> readbuflen ) <S2SV_EndBug> return TRUE ; return ( cl -> sslctx && rfbssl_pending ( cl ) > 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && wsctx -> readlen <S2SV_ModEnd> ) return TRUE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 static struct sock * dccp_v6_request_recv_sock ( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req ) { struct inet_request_sock * ireq = inet_rsk ( req ) ; struct ipv6_pinfo * newnp ; <S2SV_StartBug> const struct ipv6_pinfo * np = inet6_sk ( sk ) ; <S2SV_EndBug> struct inet_sock * newinet ; struct dccp6_sock * newdp6 ; struct sock * newsk ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = dccp_v4_request_recv_sock ( sk , skb , req , dst , req_unhash , own_req ) ; if ( newsk == NULL ) return NULL ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newnp -> saddr = newsk -> sk_v6_rcv_saddr ; inet_csk ( newsk ) -> icsk_af_ops = & dccp_ipv6_mapped ; newsk -> sk_backlog_rcv = dccp_v4_do_rcv ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; dccp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( ! dst ) { struct flowi6 fl6 ; dst = inet6_csk_route_req ( sk , & fl6 , req , IPPROTO_DCCP ) ; if ( ! dst ) goto out ; } newsk = dccp_create_openreq_child ( sk , req , skb ) ; if ( newsk == NULL ) goto out_nonewsk ; __ip6_dst_store ( newsk , dst , NULL , NULL ) ; newsk -> sk_route_caps = dst -> dev -> features & ~ ( NETIF_F_IP_CSUM | NETIF_F_TSO ) ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newsk -> sk_v6_daddr = ireq -> ir_v6_rmt_addr ; newnp -> saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_v6_rcv_saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_bound_dev_if = ireq -> ir_iif ; newinet -> inet_opt = NULL ; newnp -> rxopt . all = np -> rxopt . all ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; <S2SV_StartBug> if ( np -> opt != NULL ) <S2SV_EndBug> <S2SV_StartBug> newnp -> opt = ipv6_dup_options ( newsk , np -> opt ) ; <S2SV_EndBug> inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( newnp -> opt != NULL ) <S2SV_EndBug> <S2SV_StartBug> inet_csk ( newsk ) -> icsk_ext_hdr_len = ( newnp -> opt -> opt_nflen + <S2SV_EndBug> <S2SV_StartBug> newnp -> opt -> opt_flen ) ; <S2SV_EndBug> dccp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; if ( __inet_inherit_port ( sk , newsk ) < 0 ) { inet_csk_prepare_forced_close ( newsk ) ; dccp_done ( newsk ) ; goto out ; } * own_req = inet_ehash_nolisten ( newsk , req_to_sk ( req_unhash ) ) ; if ( * own_req && ireq -> pktopts ) { newnp -> pktoptions = skb_clone ( ireq -> pktopts , GFP_ATOMIC ) ; consume_skb ( ireq -> pktopts ) ; ireq -> pktopts = NULL ; if ( newnp -> pktoptions ) skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } return newsk ; out_overflow : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; struct ipv6_txoptions * opt <S2SV_ModStart> -> hop_limit ; opt = rcu_dereference <S2SV_ModEnd> ( np -> <S2SV_ModStart> np -> opt ) ; if ( opt ) { <S2SV_ModEnd> opt = ipv6_dup_options <S2SV_ModStart> ( newsk , opt ) ; RCU_INIT_POINTER ( newnp -> opt , opt ) ; } <S2SV_ModEnd> inet_csk ( newsk <S2SV_ModStart> ; if ( opt <S2SV_ModEnd> ) inet_csk ( <S2SV_ModStart> -> icsk_ext_hdr_len = <S2SV_ModEnd> opt -> opt_nflen <S2SV_ModStart> -> opt_nflen + <S2SV_ModEnd> opt -> opt_flen <S2SV_ModStart> opt -> opt_flen <S2SV_ModEnd> ; dccp_sync_mss (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-362 static int userfaultfd_release ( struct inode * inode , struct file * file ) { struct userfaultfd_ctx * ctx = file -> private_data ; struct mm_struct * mm = ctx -> mm ; struct vm_area_struct * vma , * prev ; struct userfaultfd_wake_range range = { . len = 0 , } ; unsigned long new_flags ; WRITE_ONCE ( ctx -> released , true ) ; if ( ! mmget_not_zero ( mm ) ) goto wakeup ; down_write ( & mm -> mmap_sem ) ; <S2SV_StartBug> prev = NULL ; <S2SV_EndBug> for ( vma = mm -> mmap ; vma ; vma = vma -> vm_next ) { cond_resched ( ) ; BUG_ON ( ! ! vma -> vm_userfaultfd_ctx . ctx ^ ! ! ( vma -> vm_flags & ( VM_UFFD_MISSING | VM_UFFD_WP ) ) ) ; if ( vma -> vm_userfaultfd_ctx . ctx != ctx ) { prev = vma ; continue ; } new_flags = vma -> vm_flags & ~ ( VM_UFFD_MISSING | VM_UFFD_WP ) ; prev = vma_merge ( mm , prev , vma -> vm_start , vma -> vm_end , new_flags , vma -> anon_vma , vma -> vm_file , vma -> vm_pgoff , vma_policy ( vma ) , NULL_VM_UFFD_CTX ) ; if ( prev ) vma = prev ; else prev = vma ; vma -> vm_flags = new_flags ; vma -> vm_userfaultfd_ctx = NULL_VM_UFFD_CTX ; } <S2SV_StartBug> up_write ( & mm -> mmap_sem ) ; <S2SV_EndBug> mmput ( mm ) ; wakeup : spin_lock ( & ctx -> fault_pending_wqh . lock ) ; __wake_up_locked_key ( & ctx -> fault_pending_wqh , TASK_NORMAL , & range ) ; __wake_up ( & ctx -> fault_wqh , TASK_NORMAL , 1 , & range ) ; spin_unlock ( & ctx -> fault_pending_wqh . lock ) ; wake_up_all ( & ctx -> event_wqh ) ; wake_up_poll ( & ctx -> fd_wqh , EPOLLHUP ) ; userfaultfd_ctx_put ( ctx ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mmap_sem ) ; if ( ! mmget_still_valid ( mm ) ) goto skip_mm ; <S2SV_ModStart> NULL_VM_UFFD_CTX ; } skip_mm :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19242\n\n```\nCWE-476 static int whereIndexExprTransColumn ( Walker * p , Expr * pExpr ) { if ( pExpr -> op == TK_COLUMN ) { IdxExprTrans * pX = p -> u . pIdxTrans ; if ( pExpr -> iTable == pX -> iTabCur && pExpr -> iColumn == pX -> iTabCol ) { <S2SV_StartBug> pExpr -> iTable = pX -> iIdxCur ; <S2SV_EndBug> pExpr -> iColumn = pX -> iIdxCol ; pExpr -> y . pTab = 0 ; } } return WRC_Continue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iTabCol ) { assert ( pExpr -> y . pTab != 0 ) ; pExpr -> affExpr = sqlite3TableColumnAffinity ( pExpr -> y . pTab , pExpr -> iColumn ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0178\n\n```\nCWE-20 int dsOpen ( void ) { struct stat sb ; int retval ; <S2SV_StartBug> char * path = server . diskstore_path ; <S2SV_EndBug> if ( ( retval = stat ( path , & sb ) == - 1 ) && errno != ENOENT ) { redisLog ( REDIS_WARNING , \"Error<S2SV_blank>opening<S2SV_blank>disk<S2SV_blank>store<S2SV_blank>at<S2SV_blank>%s:<S2SV_blank>%s\" , path , strerror ( errno ) ) ; return REDIS_ERR ; } if ( retval == 0 && S_ISDIR ( sb . st_mode ) ) return REDIS_OK ; if ( retval == 0 && ! S_ISDIR ( sb . st_mode ) ) { redisLog ( REDIS_WARNING , \"Disk<S2SV_blank>store<S2SV_blank>at<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>directory\" , path ) ; return REDIS_ERR ; } if ( mkdir ( path ) == - 1 ) { redisLog ( REDIS_WARNING , \"Disk<S2SV_blank>store<S2SV_blank>init<S2SV_blank>failed<S2SV_blank>creating<S2SV_blank>dir<S2SV_blank>%s:<S2SV_blank>%s\" , path , strerror ( errno ) ) ; return REDIS_ERR ; } return REDIS_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = server . ds_path <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0791\n\n```\nCWE-189 BOOL license_read_scope_list ( wStream * s , SCOPE_LIST * scopeList ) { UINT32 i ; UINT32 scopeCount ; if ( Stream_GetRemainingLength ( s ) < 4 ) return FALSE ; <S2SV_StartBug> Stream_Read_UINT32 ( s , scopeCount ) ; <S2SV_EndBug> scopeList -> count = scopeCount ; scopeList -> array = ( LICENSE_BLOB * ) malloc ( sizeof ( LICENSE_BLOB ) * scopeCount ) ; for ( i = 0 ; i < scopeCount ; i ++ ) { scopeList -> array [ i ] . type = BB_SCOPE_BLOB ; if ( ! license_read_binary_blob ( s , & scopeList -> array [ i ] ) ) return FALSE ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , scopeCount ) ; if ( Stream_GetRemainingLength ( s ) / sizeof ( LICENSE_BLOB ) < scopeCount ) return FALSE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _hostsock_writev ( oe_fd_t * desc , const struct oe_iovec * iov , int iovcnt ) { ssize_t ret = - 1 ; sock_t * sock = _cast_sock ( desc ) ; void * buf = NULL ; <S2SV_StartBug> size_t buf_size = 0 ; <S2SV_EndBug> if ( ! sock || ! iov || iovcnt < 0 || iovcnt > OE_IOV_MAX ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( oe_iov_pack ( iov , iovcnt , & buf , & buf_size ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> OE_RAISE_ERRNO ( OE_ENOMEM ) ; <S2SV_EndBug> if ( oe_syscall_sendv_ocall ( & ret , sock -> host_fd , buf , iovcnt , buf_size ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> done : <S2SV_EndBug> if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t buf_size = 0 ; size_t data_size <S2SV_ModStart> , & buf_size , & data_size <S2SV_ModStart> OE_RAISE_ERRNO ( OE_ENOMEM ) ; if ( data_size > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL <S2SV_ModStart> ) ; } if ( ret > ( ssize_t ) data_size ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_idct4x4_add ( const int16_t * input , uint8_t * dest , int stride , int eob ) { <S2SV_EndBug> if ( eob > 1 ) <S2SV_StartBug> vp9_idct4x4_16_add ( input , dest , stride ) ; <S2SV_EndBug> else <S2SV_StartBug> vp9_idct4x4_1_add ( input , dest , stride ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_idct4x4_add ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> > 1 ) vpx_idct4x4_16_add <S2SV_ModEnd> ( input , <S2SV_ModStart> ) ; else vpx_idct4x4_1_add <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11382\n\n```\nCWE-125 <S2SV_StartBug> INST_HANDLER ( sts ) { <S2SV_EndBug> int r = ( ( buf [ 0 ] >> 4 ) & 0xf ) | ( ( buf [ 1 ] & 0x1 ) << 4 ) ; int k = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; op -> ptr = k ; ESIL_A ( \"r%d,\" , r ) ; __generic_ld_st ( op , \"ram\" , 0 , 1 , 0 , k , 1 ) ; op -> cycles = 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sts ) { if ( len < 4 ) { return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11811\n\n```\nCWE-416 static int try_smi_init ( struct smi_info * new_smi ) { int rv = 0 ; int i ; char * init_name = NULL ; pr_info ( \"Trying<S2SV_blank>%s-specified<S2SV_blank>%s<S2SV_blank>state<S2SV_blank>machine<S2SV_blank>at<S2SV_blank>%s<S2SV_blank>address<S2SV_blank>0x%lx,<S2SV_blank>slave<S2SV_blank>address<S2SV_blank>0x%x,<S2SV_blank>irq<S2SV_blank>%d\\\\n\" , ipmi_addr_src_to_str ( new_smi -> io . addr_source ) , si_to_str [ new_smi -> io . si_type ] , addr_space_to_str [ new_smi -> io . addr_type ] , new_smi -> io . addr_data , new_smi -> io . slave_addr , new_smi -> io . irq ) ; switch ( new_smi -> io . si_type ) { case SI_KCS : new_smi -> handlers = & kcs_smi_handlers ; break ; case SI_SMIC : new_smi -> handlers = & smic_smi_handlers ; break ; case SI_BT : new_smi -> handlers = & bt_smi_handlers ; break ; default : rv = - EIO ; goto out_err ; } new_smi -> si_num = smi_num ; if ( ! new_smi -> io . dev ) { init_name = kasprintf ( GFP_KERNEL , \"ipmi_si.%d\" , new_smi -> si_num ) ; new_smi -> pdev = platform_device_alloc ( \"ipmi_si\" , new_smi -> si_num ) ; if ( ! new_smi -> pdev ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>platform<S2SV_blank>device\\\\n\" ) ; rv = - ENOMEM ; goto out_err ; } new_smi -> io . dev = & new_smi -> pdev -> dev ; new_smi -> io . dev -> driver = & ipmi_platform_driver . driver ; new_smi -> io . dev -> init_name = init_name ; } new_smi -> si_sm = kmalloc ( new_smi -> handlers -> size ( ) , GFP_KERNEL ) ; if ( ! new_smi -> si_sm ) { rv = - ENOMEM ; goto out_err ; } new_smi -> io . io_size = new_smi -> handlers -> init_data ( new_smi -> si_sm , & new_smi -> io ) ; rv = new_smi -> io . io_setup ( & new_smi -> io ) ; if ( rv ) { dev_err ( new_smi -> io . dev , \"Could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>up<S2SV_blank>I/O<S2SV_blank>space\\\\n\" ) ; goto out_err ; } if ( new_smi -> handlers -> detect ( new_smi -> si_sm ) ) { if ( new_smi -> io . addr_source ) dev_err ( new_smi -> io . dev , \"Interface<S2SV_blank>detection<S2SV_blank>failed\\\\n\" ) ; rv = - ENODEV ; goto out_err ; } rv = try_get_dev_id ( new_smi ) ; if ( rv ) { if ( new_smi -> io . addr_source ) dev_err ( new_smi -> io . dev , \"There<S2SV_blank>appears<S2SV_blank>to<S2SV_blank>be<S2SV_blank>no<S2SV_blank>BMC<S2SV_blank>at<S2SV_blank>this<S2SV_blank>location\\\\n\" ) ; goto out_err ; } setup_oem_data_handler ( new_smi ) ; setup_xaction_handlers ( new_smi ) ; check_for_broken_irqs ( new_smi ) ; new_smi -> waiting_msg = NULL ; new_smi -> curr_msg = NULL ; atomic_set ( & new_smi -> req_events , 0 ) ; new_smi -> run_to_completion = false ; for ( i = 0 ; i < SI_NUM_STATS ; i ++ ) atomic_set ( & new_smi -> stats [ i ] , 0 ) ; new_smi -> interrupt_disabled = true ; atomic_set ( & new_smi -> need_watch , 0 ) ; rv = try_enable_event_buffer ( new_smi ) ; if ( rv == 0 ) new_smi -> has_event_buffer = true ; start_clear_flags ( new_smi ) ; if ( new_smi -> io . irq ) { new_smi -> interrupt_disabled = false ; atomic_set ( & new_smi -> req_events , 1 ) ; } if ( new_smi -> pdev && ! new_smi -> pdev_registered ) { rv = platform_device_add ( new_smi -> pdev ) ; if ( rv ) { dev_err ( new_smi -> io . dev , \"Unable<S2SV_blank>to<S2SV_blank>register<S2SV_blank>system<S2SV_blank>interface<S2SV_blank>device:<S2SV_blank>%d\\\\n\" , rv ) ; goto out_err ; } new_smi -> pdev_registered = true ; } dev_set_drvdata ( new_smi -> io . dev , new_smi ) ; rv = device_add_group ( new_smi -> io . dev , & ipmi_si_dev_attr_group ) ; if ( rv ) { dev_err ( new_smi -> io . dev , \"Unable<S2SV_blank>to<S2SV_blank>add<S2SV_blank>device<S2SV_blank>attributes:<S2SV_blank>error<S2SV_blank>%d\\\\n\" , rv ) ; goto out_err ; } new_smi -> dev_group_added = true ; rv = ipmi_register_smi ( & handlers , new_smi , new_smi -> io . dev , new_smi -> io . slave_addr ) ; if ( rv ) { dev_err ( new_smi -> io . dev , \"Unable<S2SV_blank>to<S2SV_blank>register<S2SV_blank>device:<S2SV_blank>error<S2SV_blank>%d\\\\n\" , rv ) ; goto out_err ; } smi_num ++ ; dev_info ( new_smi -> io . dev , \"IPMI<S2SV_blank>%s<S2SV_blank>interface<S2SV_blank>initialized\\\\n\" , si_to_str [ new_smi -> io . si_type ] ) ; WARN_ON ( new_smi -> io . dev -> init_name != NULL ) ; out_err : <S2SV_StartBug> kfree ( init_name ) ; <S2SV_EndBug> return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; out_err : if ( rv && new_smi -> io . io_cleanup ) { new_smi -> io . io_cleanup ( & new_smi -> io ) ; new_smi -> io . io_cleanup = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6515\n\n```\nCWE-20 int auth_password ( Authctxt * authctxt , const char * password ) { struct passwd * pw = authctxt -> pw ; int result , ok = authctxt -> valid ; # if defined ( USE_SHADOW ) && defined ( HAS_SHADOW_EXPIRE ) static int expire_checked = 0 ; <S2SV_StartBug> # endif <S2SV_EndBug> # ifndef HAVE_CYGWIN if ( pw -> pw_uid == 0 && options . permit_root_login != PERMIT_YES ) ok = 0 ; # endif if ( * password == '\\\\0' && options . permit_empty_passwd == 0 ) return 0 ; # ifdef KRB5 if ( options . kerberos_authentication == 1 ) { int ret = auth_krb5_password ( authctxt , password ) ; if ( ret == 1 || ret == 0 ) return ret && ok ; } # endif # ifdef HAVE_CYGWIN { HANDLE hToken = cygwin_logon_user ( pw , password ) ; if ( hToken == INVALID_HANDLE_VALUE ) return 0 ; cygwin_set_impersonation_token ( hToken ) ; return ok ; } # endif # ifdef USE_PAM if ( options . use_pam ) return ( sshpam_auth_passwd ( authctxt , password ) && ok ) ; # endif # if defined ( USE_SHADOW ) && defined ( HAS_SHADOW_EXPIRE ) if ( ! expire_checked ) { expire_checked = 1 ; if ( auth_shadow_pwexpired ( authctxt ) ) authctxt -> force_pwchange = 1 ; } # endif result = sys_auth_passwd ( authctxt , password ) ; if ( authctxt -> force_pwchange ) disable_forwarding ( ) ; return ( result && ok ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif if ( strlen ( password ) > MAX_PASSWORD_LEN ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3183\n\n```\nCWE-125 static void sycc422_to_rgb ( opj_image_t * img ) { int * d0 , * d1 , * d2 , * r , * g , * b ; const int * y , * cb , * cr ; <S2SV_StartBug> unsigned int maxw , maxh , max ; <S2SV_EndBug> int offset , upb ; <S2SV_StartBug> unsigned int i , j ; <S2SV_EndBug> upb = ( int ) img -> comps [ 0 ] . prec ; offset = 1 << ( upb - 1 ) ; upb = ( 1 << upb ) - 1 ; <S2SV_StartBug> maxw = ( unsigned int ) img -> comps [ 0 ] . w ; maxh = ( unsigned int ) img -> comps [ 0 ] . h ; <S2SV_EndBug> max = maxw * maxh ; y = img -> comps [ 0 ] . data ; cb = img -> comps [ 1 ] . data ; cr = img -> comps [ 2 ] . data ; <S2SV_StartBug> d0 = r = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> <S2SV_StartBug> d1 = g = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> <S2SV_StartBug> d2 = b = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> if ( r == NULL || g == NULL || b == NULL ) goto fails ; <S2SV_StartBug> for ( i = 0U ; i < maxh ; ++ i ) <S2SV_EndBug> { <S2SV_StartBug> for ( j = 0U ; j < ( maxw & ~ ( unsigned int ) 1U ) ; j += 2U ) <S2SV_EndBug> { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; ++ cb ; ++ cr ; } <S2SV_StartBug> if ( j < maxw ) { <S2SV_EndBug> sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; ++ cb ; ++ cr ; } } free ( img -> comps [ 0 ] . data ) ; img -> comps [ 0 ] . data = d0 ; free ( img -> comps [ 1 ] . data ) ; img -> comps [ 1 ] . data = d1 ; free ( img -> comps [ 2 ] . data ) ; img -> comps [ 2 ] . data = d2 ; <S2SV_StartBug> # if defined ( USE_JPWL ) || defined ( USE_MJ2 ) <S2SV_EndBug> <S2SV_StartBug> img -> comps [ 1 ] . w = maxw ; img -> comps [ 1 ] . h = maxh ; <S2SV_EndBug> <S2SV_StartBug> img -> comps [ 2 ] . w = maxw ; img -> comps [ 2 ] . h = maxh ; <S2SV_EndBug> # else img -> comps [ 1 ] . w = ( OPJ_UINT32 ) maxw ; img -> comps [ 1 ] . h = ( OPJ_UINT32 ) maxh ; <S2SV_StartBug> img -> comps [ 2 ] . w = ( OPJ_UINT32 ) maxw ; img -> comps [ 2 ] . h = ( OPJ_UINT32 ) maxh ; <S2SV_EndBug> # endif img -> comps [ 1 ] . dx = img -> comps [ 0 ] . dx ; img -> comps [ 2 ] . dx = img -> comps [ 0 ] . dx ; img -> comps [ 1 ] . dy = img -> comps [ 0 ] . dy ; <S2SV_StartBug> img -> comps [ 2 ] . dy = img -> comps [ 0 ] . dy ; <S2SV_EndBug> return ; fails : <S2SV_StartBug> if ( r ) free ( r ) ; <S2SV_EndBug> <S2SV_StartBug> if ( g ) free ( g ) ; <S2SV_EndBug> <S2SV_StartBug> if ( b ) free ( b ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cr ; size_t <S2SV_ModEnd> maxw , maxh <S2SV_ModStart> maxh , max , offx , loopmaxw <S2SV_ModStart> , upb ; size_t i <S2SV_ModEnd> ; upb = <S2SV_ModStart> maxw = ( size_t <S2SV_ModEnd> ) img -> <S2SV_ModStart> maxh = ( size_t <S2SV_ModEnd> ) img -> <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> goto fails ; offx = img -> x0 & 1U ; loopmaxw = maxw - offx ; <S2SV_ModStart> i ) { size_t j ; if ( offx > 0U ) { sycc_to_rgb ( offset , upb , * y , 0 , 0 , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; } <S2SV_ModStart> j < ( loopmaxw <S2SV_ModEnd> & ~ ( <S2SV_ModStart> & ~ ( size_t <S2SV_ModEnd> ) 1U ) <S2SV_ModStart> ( j < loopmaxw <S2SV_ModEnd> ) { sycc_to_rgb <S2SV_ModStart> = d2 ; <S2SV_ModEnd> img -> comps <S2SV_ModStart> . w = img -> comps [ 2 ] . w = img -> comps [ 0 ] . w ; <S2SV_ModEnd> img -> comps <S2SV_ModStart> . h = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . h = img -> comps [ 0 ] . h ; img -> comps [ 1 ] . dx = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . dx = img -> comps [ 0 ] . dx ; img -> comps [ 1 ] . dy = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . <S2SV_ModEnd> dy = img <S2SV_ModStart> ; img -> color_space = OPJ_CLRSPC_SRGB <S2SV_ModEnd> ; return ; <S2SV_ModStart> ; fails : <S2SV_ModEnd> free ( r <S2SV_ModStart> r ) ; <S2SV_ModEnd> free ( g <S2SV_ModStart> g ) ; <S2SV_ModEnd> free ( b\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3400\n\n```\nCWE-119 static int udf_load_logicalvol ( struct super_block * sb , sector_t block , struct kernel_lb_addr * fileset ) { struct logicalVolDesc * lvd ; <S2SV_StartBug> int i , j , offset ; <S2SV_EndBug> uint8_t type ; struct udf_sb_info * sbi = UDF_SB ( sb ) ; struct genericPartitionMap * gpm ; uint16_t ident ; struct buffer_head * bh ; unsigned int table_len ; int ret = 0 ; bh = udf_read_tagged ( sb , block , block , & ident ) ; if ( ! bh ) return 1 ; BUG_ON ( ident != TAG_IDENT_LVD ) ; lvd = ( struct logicalVolDesc * ) bh -> b_data ; table_len = le32_to_cpu ( lvd -> mapTableLength ) ; if ( sizeof ( * lvd ) + table_len > sb -> s_blocksize ) { udf_err ( sb , \"error<S2SV_blank>loading<S2SV_blank>logical<S2SV_blank>volume<S2SV_blank>descriptor:<S2SV_blank>\" \"Partition<S2SV_blank>table<S2SV_blank>too<S2SV_blank>long<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%lu)\\\\n\" , table_len , sb -> s_blocksize - sizeof ( * lvd ) ) ; goto out_bh ; } ret = udf_sb_alloc_partition_maps ( sb , le32_to_cpu ( lvd -> numPartitionMaps ) ) ; if ( ret ) goto out_bh ; for ( i = 0 , offset = 0 ; i < sbi -> s_partitions && offset < table_len ; i ++ , offset += gpm -> partitionMapLength ) { struct udf_part_map * map = & sbi -> s_partmaps [ i ] ; gpm = ( struct genericPartitionMap * ) & ( lvd -> partitionMaps [ offset ] ) ; type = gpm -> partitionMapType ; if ( type == 1 ) { struct genericPartitionMap1 * gpm1 = ( struct genericPartitionMap1 * ) gpm ; map -> s_partition_type = UDF_TYPE1_MAP15 ; map -> s_volumeseqnum = le16_to_cpu ( gpm1 -> volSeqNum ) ; map -> s_partition_num = le16_to_cpu ( gpm1 -> partitionNum ) ; map -> s_partition_func = NULL ; } else if ( type == 2 ) { struct udfPartitionMap2 * upm2 = ( struct udfPartitionMap2 * ) gpm ; if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_VIRTUAL , strlen ( UDF_ID_VIRTUAL ) ) ) { u16 suf = le16_to_cpu ( ( ( __le16 * ) upm2 -> partIdent . identSuffix ) [ 0 ] ) ; if ( suf < 0x0200 ) { map -> s_partition_type = UDF_VIRTUAL_MAP15 ; map -> s_partition_func = udf_get_pblock_virt15 ; } else { map -> s_partition_type = UDF_VIRTUAL_MAP20 ; map -> s_partition_func = udf_get_pblock_virt20 ; } } else if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_SPARABLE , strlen ( UDF_ID_SPARABLE ) ) ) { <S2SV_StartBug> uint32_t loc ; <S2SV_EndBug> struct sparingTable * st ; <S2SV_StartBug> struct sparablePartitionMap * spm = <S2SV_EndBug> ( struct sparablePartitionMap * ) gpm ; map -> s_partition_type = UDF_SPARABLE_MAP15 ; map -> s_type_specific . s_sparing . s_packet_len = le16_to_cpu ( spm -> packetLength ) ; for ( j = 0 ; j < spm -> numSparingTables ; j ++ ) { struct buffer_head * bh2 ; loc = le32_to_cpu ( spm -> locSparingTable [ j ] ) ; bh2 = udf_read_tagged ( sb , loc , loc , & ident ) ; map -> s_type_specific . s_sparing . s_spar_map [ j ] = bh2 ; if ( bh2 == NULL ) continue ; st = ( struct sparingTable * ) bh2 -> b_data ; if ( ident != 0 || strncmp ( st -> sparingIdent . ident , UDF_ID_SPARING , strlen ( UDF_ID_SPARING ) ) ) { brelse ( bh2 ) ; map -> s_type_specific . s_sparing . s_spar_map [ j ] = NULL ; } } map -> s_partition_func = udf_get_pblock_spar15 ; } else if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_METADATA , strlen ( UDF_ID_METADATA ) ) ) { struct udf_meta_data * mdata = & map -> s_type_specific . s_metadata ; struct metadataPartitionMap * mdm = ( struct metadataPartitionMap * ) & ( lvd -> partitionMaps [ offset ] ) ; udf_debug ( \"Parsing<S2SV_blank>Logical<S2SV_blank>vol<S2SV_blank>part<S2SV_blank>%d<S2SV_blank>type<S2SV_blank>%d<S2SV_blank><S2SV_blank>id=%s\\\\n\" , i , type , UDF_ID_METADATA ) ; map -> s_partition_type = UDF_METADATA_MAP25 ; map -> s_partition_func = udf_get_pblock_meta25 ; mdata -> s_meta_file_loc = le32_to_cpu ( mdm -> metadataFileLoc ) ; mdata -> s_mirror_file_loc = le32_to_cpu ( mdm -> metadataMirrorFileLoc ) ; mdata -> s_bitmap_file_loc = le32_to_cpu ( mdm -> metadataBitmapFileLoc ) ; mdata -> s_alloc_unit_size = le32_to_cpu ( mdm -> allocUnitSize ) ; mdata -> s_align_unit_size = le16_to_cpu ( mdm -> alignUnitSize ) ; if ( mdm -> flags & 0x01 ) mdata -> s_flags |= MF_DUPLICATE_MD ; udf_debug ( \"Metadata<S2SV_blank>Ident<S2SV_blank>suffix=0x%x\\\\n\" , le16_to_cpu ( * ( __le16 * ) mdm -> partIdent . identSuffix ) ) ; udf_debug ( \"Metadata<S2SV_blank>part<S2SV_blank>num=%d\\\\n\" , le16_to_cpu ( mdm -> partitionNum ) ) ; udf_debug ( \"Metadata<S2SV_blank>part<S2SV_blank>alloc<S2SV_blank>unit<S2SV_blank>size=%d\\\\n\" , le32_to_cpu ( mdm -> allocUnitSize ) ) ; udf_debug ( \"Metadata<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataFileLoc ) ) ; udf_debug ( \"Mirror<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataMirrorFileLoc ) ) ; udf_debug ( \"Bitmap<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataBitmapFileLoc ) ) ; udf_debug ( \"Flags:<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , mdata -> s_flags , mdm -> flags ) ; } else { udf_debug ( \"Unknown<S2SV_blank>ident:<S2SV_blank>%s\\\\n\" , upm2 -> partIdent . ident ) ; continue ; } map -> s_volumeseqnum = le16_to_cpu ( upm2 -> volSeqNum ) ; map -> s_partition_num = le16_to_cpu ( upm2 -> partitionNum ) ; } udf_debug ( \"Partition<S2SV_blank>(%d:%d)<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>on<S2SV_blank>volume<S2SV_blank>%d\\\\n\" , i , map -> s_partition_num , type , map -> s_volumeseqnum ) ; } if ( fileset ) { struct long_ad * la = ( struct long_ad * ) & ( lvd -> logicalVolContentsUse [ 0 ] ) ; * fileset = lelb_to_cpu ( la -> extLocation ) ; udf_debug ( \"FileSet<S2SV_blank>found<S2SV_blank>in<S2SV_blank>LogicalVolDesc<S2SV_blank>at<S2SV_blank>block=%d,<S2SV_blank>partition=%d\\\\n\" , fileset -> logicalBlockNum , fileset -> partitionReferenceNum ) ; } if ( lvd -> integritySeqExt . extLength ) udf_load_logicalvolint ( sb , leea_to_cpu ( lvd -> integritySeqExt ) ) ; out_bh : brelse ( bh ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int i <S2SV_ModEnd> , offset ; <S2SV_ModStart> ) ) { if ( udf_load_sparable_map ( sb , map , ( <S2SV_ModEnd> struct sparablePartitionMap * <S2SV_ModStart> struct sparablePartitionMap * ) gpm ) < 0 ) goto out_bh <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0551\n\n```\nCWE-000 WORD32 ih264d_video_decode ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ( dec_hdl -> pv_codec_handle ) ; WORD32 i4_err_status = 0 ; UWORD8 * pu1_buf = NULL ; WORD32 buflen ; UWORD32 u4_max_ofst , u4_length_of_start_code = 0 ; UWORD32 bytes_consumed = 0 ; UWORD32 cur_slice_is_nonref = 0 ; UWORD32 u4_next_is_aud ; UWORD32 u4_first_start_code_found = 0 ; WORD32 ret = 0 , api_ret_value = IV_SUCCESS ; WORD32 header_data_left = 0 , frame_data_left = 0 ; UWORD8 * pu1_bitstrm_buf ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; ithread_set_name ( ( void * ) \"Parse_thread\" ) ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size ; u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } ps_dec -> pv_dec_out = ps_dec_op ; ps_dec -> process_called = 1 ; if ( ps_dec -> init_done != 1 ) { return IV_FAIL ; } DATA_SYNC ( ) ; if ( 0 == ps_dec -> u1_flushfrm ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } ps_dec -> u1_pic_decode_done = 0 ; ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec -> ps_out_buffer = NULL ; if ( ps_dec_ip -> u4_size >= offsetof ( ivd_video_decode_ip_t , s_out_buffer ) ) ps_dec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 0 ; ps_dec -> s_disp_op . u4_error_code = 1 ; ps_dec -> u4_fmt_conv_num_rows = FMT_CONV_NUM_ROWS ; ps_dec -> u4_stop_threads = 0 ; if ( 0 == ps_dec -> u4_share_disp_buf && ps_dec -> i4_decode_header == 0 ) { UWORD32 i ; if ( ps_dec -> ps_out_buffer -> u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec -> ps_out_buffer -> u4_num_bufs ; i ++ ) { if ( ps_dec -> ps_out_buffer -> pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec -> ps_out_buffer -> u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } if ( ps_dec -> u4_total_frames_decoded >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code = ERROR_FRAME_LIMIT_OVER ; return IV_FAIL ; } ps_dec -> u4_ts = ps_dec_ip -> u4_ts ; ps_dec_op -> u4_error_code = 0 ; ps_dec_op -> e_pic_type = - 1 ; ps_dec_op -> u4_output_present = 0 ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; <S2SV_StartBug> { <S2SV_EndBug> if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } } ps_dec -> u4_slice_start_code_found = 0 ; if ( ps_dec -> u1_init_dec_flag == 1 && ps_dec -> u4_share_disp_buf == 1 && ps_dec -> u1_flushfrm == 0 ) { UWORD32 i ; WORD32 disp_avail = 0 , free_id ; for ( i = 0 ; i < ps_dec -> u1_pic_bufs ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_mapping [ i ] || 1 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) { disp_avail = 1 ; break ; } } if ( 0 == disp_avail ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } while ( 1 ) { pic_buffer_t * ps_pic_buf ; ps_pic_buf = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & free_id ) ; if ( ps_pic_buf == NULL ) { UWORD32 i , display_queued = 0 ; for ( i = 0 ; i < ( MAX_DISP_BUFS_NEW ) ; i ++ ) { if ( 0 != ps_dec -> u4_disp_buf_mapping [ i ] ) { display_queued = 1 ; break ; } } if ( 1 == display_queued ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } } else { if ( 1 == ps_dec -> u4_disp_buf_mapping [ free_id ] ) { ih264_buf_mgr_set_status ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; } else { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; break ; } } } } if ( ps_dec -> u1_flushfrm && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; ps_dec -> u4_output_present = 1 ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; ps_dec_op -> u4_new_seq = 0 ; ps_dec_op -> u4_output_present = ps_dec -> u4_output_present ; ps_dec_op -> u4_progressive_frame_flag = ps_dec -> s_disp_op . u4_progressive_frame_flag ; ps_dec_op -> e_output_format = ps_dec -> s_disp_op . e_output_format ; ps_dec_op -> s_disp_frm_buf = ps_dec -> s_disp_op . s_disp_frm_buf ; ps_dec_op -> e4_fld_type = ps_dec -> s_disp_op . e4_fld_type ; ps_dec_op -> u4_ts = ps_dec -> s_disp_op . u4_ts ; ps_dec_op -> u4_disp_buf_id = ps_dec -> s_disp_op . u4_disp_buf_id ; ps_dec_op -> u4_is_ref_flag = - 1 ; ps_dec_op -> e_pic_type = IV_NA_FRAME ; ps_dec_op -> u4_frame_decoded_flag = 0 ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { return ( IV_SUCCESS ) ; } else return ( IV_FAIL ) ; } if ( ps_dec -> u1_res_changed == 1 ) { ih264d_init_decoder ( ps_dec ) ; } ps_dec -> u4_prev_nal_skipped = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> cur_dec_mb_num = 0 ; ps_dec -> cur_recon_mb_num = 0 ; ps_dec -> u4_first_slice_in_pic = 2 ; ps_dec -> u1_first_pb_nal_in_pic = 1 ; ps_dec -> u1_slice_header_done = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> u4_dec_thread_created = 0 ; ps_dec -> u4_bs_deblk_thread_created = 0 ; ps_dec -> u4_cur_bs_mb_num = 0 ; ps_dec -> u4_start_recon_deblk = 0 ; DEBUG_THREADS_PRINTF ( \"<S2SV_blank>Starting<S2SV_blank>process<S2SV_blank>call\\\\n\" ) ; ps_dec -> u4_pic_buf_got = 0 ; do { pu1_buf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer + ps_dec_op -> u4_num_bytes_consumed ; u4_max_ofst = ps_dec_ip -> u4_num_Bytes - ps_dec_op -> u4_num_bytes_consumed ; pu1_bitstrm_buf = ps_dec -> ps_mem_tab [ MEM_REC_BITSBUF ] . pv_base ; u4_next_is_aud = 0 ; buflen = ih264d_find_start_code ( pu1_buf , 0 , u4_max_ofst , & u4_length_of_start_code , & u4_next_is_aud ) ; if ( buflen == - 1 ) buflen = 0 ; buflen = MIN ( buflen , ( WORD32 ) ( ps_dec -> ps_mem_tab [ MEM_REC_BITSBUF ] . u4_mem_size - 8 ) ) ; bytes_consumed = buflen + u4_length_of_start_code ; ps_dec_op -> u4_num_bytes_consumed += bytes_consumed ; if ( buflen >= MAX_NAL_UNIT_SIZE ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; H264_DEC_DEBUG_PRINT ( \"\\\\nNal<S2SV_blank>Size<S2SV_blank>exceeded<S2SV_blank>%d,<S2SV_blank>Processing<S2SV_blank>Stopped..\\\\n\" , MAX_NAL_UNIT_SIZE ) ; ps_dec -> i4_error_code = 1 << IVD_CORRUPTEDDATA ; ps_dec_op -> e_pic_type = - 1 ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_pic_buf_got == 0 ) { if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return IV_FAIL ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } { UWORD8 u1_firstbyte , u1_nal_ref_idc ; if ( ps_dec -> i4_app_skip_mode == IVD_SKIP_B ) { u1_firstbyte = * ( pu1_buf + u4_length_of_start_code ) ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_firstbyte ) ) ; if ( u1_nal_ref_idc == 0 ) { cur_slice_is_nonref = 1 ; continue ; } else { if ( 1 == cur_slice_is_nonref ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> e_pic_type = IV_B_FRAME ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } } } } if ( buflen ) { memcpy ( pu1_bitstrm_buf , pu1_buf + u4_length_of_start_code , buflen ) ; u4_first_start_code_found = 1 ; } else { if ( u4_first_start_code_found == 0 ) { ps_dec -> i4_error_code = ERROR_START_CODE_NOT_FOUND ; ps_dec_op -> u4_error_code |= 1 << IVD_INSUFFICIENTDATA ; if ( ps_dec -> u4_pic_buf_got == 0 ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; ps_dec_op -> u4_error_code = ps_dec -> i4_error_code ; ps_dec_op -> u4_frame_decoded_flag = 0 ; return ( IV_FAIL ) ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } else { frame_data_left = 0 ; header_data_left = 0 ; continue ; } } ps_dec -> u4_return_to_app = 0 ; ret = ih264d_parse_nal_unit ( dec_hdl , ps_dec_op , pu1_bitstrm_buf , buflen ) ; if ( ret != OK ) { UWORD32 error = ih264d_map_error ( ret ) ; ps_dec_op -> u4_error_code = error | ret ; api_ret_value = IV_FAIL ; if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ps_dec -> u4_slice_start_code_found = 0 ; break ; } if ( ( ret == ERROR_INCOMPLETE_FRAME ) || ( ret == ERROR_DANGLING_FIELD_IN_PIC ) ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; api_ret_value = IV_FAIL ; break ; } if ( ret == ERROR_IN_LAST_SLICE_OF_PIC ) { api_ret_value = IV_FAIL ; break ; } } if ( ps_dec -> u4_return_to_app ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } header_data_left = ( ( ps_dec -> i4_decode_header == 1 ) && ( ps_dec -> i4_header_decoded != 3 ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; frame_data_left = ( ( ( ps_dec -> i4_decode_header == 0 ) && ( ( ps_dec -> u1_pic_decode_done == 0 ) || ( u4_next_is_aud == 1 ) ) ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; } while ( ( header_data_left == 1 ) || ( frame_data_left == 1 ) ) ; if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ps_dec -> u2_total_mbs_coded < ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { WORD32 num_mb_skipped ; WORD32 prev_slice_err ; pocstruct_t temp_poc ; WORD32 ret1 ; WORD32 ht_in_mbs ; ht_in_mbs = ps_dec -> u2_pic_ht >> ( 4 + ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ; num_mb_skipped = ( ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u4_pic_buf_got == 0 ) ) prev_slice_err = 1 ; else prev_slice_err = 2 ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u2_total_mbs_coded == 0 ) ) prev_slice_err = 1 ; ret1 = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL , ps_dec -> ps_cur_slice -> u2_frame_num , & temp_poc , prev_slice_err ) ; if ( ( ret1 == ERROR_UNAVAIL_PICBUF_T ) || ( ret1 == ERROR_UNAVAIL_MVBUF_T ) || ( ret1 == ERROR_INV_SPS_PPS_T ) ) { ret = ret1 ; } } if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } if ( ret == IVD_RES_CHANGED ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; } return IV_FAIL ; } if ( ps_dec -> u1_separate_parse ) { if ( ps_dec -> u4_num_cores == 2 ) { if ( ( ps_dec -> u4_nmb_deblk == 0 ) && ( ps_dec -> u4_start_recon_deblk == 1 ) && ( ps_dec -> ps_cur_sps -> u1_mb_aff_flag == 0 ) ) { UWORD32 u4_num_mbs , u4_max_addr ; tfr_ctxt_t s_tfr_ctxt ; tfr_ctxt_t * ps_tfr_cxt = & s_tfr_ctxt ; pad_mgr_t * ps_pad_mgr = & ps_dec -> s_pad_mgr ; u4_max_addr = ( ps_dec -> u2_frm_wd_in_mbs * ps_dec -> u2_frm_ht_in_mbs ) - 1 ; ps_dec -> u4_cur_bs_mb_num = u4_max_addr + 1 ; ih264d_init_deblk_tfr_ctxt ( ps_dec , ps_pad_mgr , ps_tfr_cxt , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; u4_num_mbs = u4_max_addr - ps_dec -> u4_cur_deblk_mb_num + 1 ; DEBUG_PERF_PRINTF ( \"mbs<S2SV_blank>left<S2SV_blank>for<S2SV_blank>deblocking=<S2SV_blank>%d<S2SV_blank>\\\\n\" , u4_num_mbs ) ; if ( u4_num_mbs != 0 ) ih264d_check_mb_map_deblk ( ps_dec , u4_num_mbs , ps_tfr_cxt , 1 ) ; ps_dec -> u4_start_recon_deblk = 0 ; } } ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } } DATA_SYNC ( ) ; if ( ( ps_dec_op -> u4_error_code & 0xff ) != ERROR_DYNAMIC_RESOLUTION_NOT_SUPPORTED ) { ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; } if ( ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> i4_decode_header == 1 && ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> u4_prev_nal_skipped ) { ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ERROR_DANGLING_FIELD_IN_PIC != i4_err_status ) ) { if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) { if ( 1 == ps_dec -> ps_cur_slice -> u1_bottom_field_flag ) { ps_dec -> u1_top_bottom_decoded |= BOT_FIELD_ONLY ; } else { ps_dec -> u1_top_bottom_decoded |= TOP_FIELD_ONLY ; } } if ( ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) && ( ps_dec -> u4_pic_buf_got == 1 ) ) { ret = ih264d_deblock_display ( ps_dec ) ; <S2SV_StartBug> if ( ret != 0 ) <S2SV_EndBug> { return IV_FAIL ; } } if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_dec -> i4_frametype = IV_IDR_FRAME ; } else if ( ps_dec -> i4_pic_type == B_SLICE ) { ps_dec -> i4_frametype = IV_B_FRAME ; } else if ( ps_dec -> i4_pic_type == P_SLICE ) { ps_dec -> i4_frametype = IV_P_FRAME ; } else if ( ps_dec -> i4_pic_type == I_SLICE ) { ps_dec -> i4_frametype = IV_I_FRAME ; } else { H264_DEC_DEBUG_PRINT ( \"Shouldn\\'t<S2SV_blank>come<S2SV_blank>here\\\\n\" ) ; } ps_dec -> i4_content_type = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded + 2 ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded - ps_dec -> ps_cur_slice -> u1_field_pic_flag ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } { if ( ( 0 == ps_dec -> u4_num_reorder_frames_at_init ) && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 1 ; } } ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; if ( ps_dec -> u4_output_present && ( ps_dec -> u4_fmt_conv_cur_row < ps_dec -> s_disp_frame_info . u4_y_ht ) ) { ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht - ps_dec -> u4_fmt_conv_cur_row ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; } if ( ps_dec -> i4_decode_header == 1 && ( ps_dec -> i4_header_decoded & 1 ) == 1 ) { ps_dec_op -> u4_progressive_frame_flag = 1 ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { if ( ( 0 == ps_dec -> ps_sps -> u1_frame_mbs_only_flag ) && ( 0 == ps_dec -> ps_sps -> u1_mb_aff_flag ) ) ps_dec_op -> u4_progressive_frame_flag = 0 ; } } <S2SV_StartBug> DATA_SYNC ( ) ; <S2SV_EndBug> H264_DEC_DEBUG_PRINT ( \"The<S2SV_blank>num<S2SV_blank>bytes<S2SV_blank>consumed:<S2SV_blank>%d\\\\n\" , ps_dec_op -> u4_num_bytes_consumed ) ; return api_ret_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - 1 ; <S2SV_ModEnd> ps_dec -> u4_slice_start_code_found <S2SV_ModStart> ps_dec ) ; <S2SV_ModEnd> } if ( <S2SV_ModStart> ; } } if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } if ( ps_dec -> u4_pic_buf_got == 1 ) { if ( 1 == ps_dec -> u1_last_pic_not_decoded ) { ret = ih264d_end_of_pic_dispbuf_mgr ( ps_dec ) ; if ( ret != OK ) return ret ; ret = ih264d_end_of_pic ( ps_dec ) ; if ( ret != OK ) return ret ; } else { ret = ih264d_end_of_pic ( ps_dec ) ; if ( ret != OK ) return ret ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10672\n\n```\nCWE-20 int treeRead ( struct READER * reader , struct DATAOBJECT * data ) { int i , j , err , olen , elements , size , x , y , z , b , e , dy , dz , sx , sy , sz , dzy , szy ; char * input , * output ; uint8_t node_type , node_level ; uint16_t entries_used ; uint32_t size_of_chunk ; uint32_t filter_mask ; uint64_t address_of_left_sibling , address_of_right_sibling , start [ 4 ] , child_pointer , key , store ; char buf [ 4 ] ; UNUSED ( node_level ) ; UNUSED ( address_of_right_sibling ) ; UNUSED ( address_of_left_sibling ) ; UNUSED ( key ) ; if ( data -> ds . dimensionality > 3 ) { log ( \"TREE<S2SV_blank>dimensions<S2SV_blank>><S2SV_blank>3\" ) ; return MYSOFA_INVALID_FORMAT ; } if ( fread ( buf , 1 , 4 , reader -> fhd ) != 4 || strncmp ( buf , \"TREE\" , 4 ) ) { log ( \"cannot<S2SV_blank>read<S2SV_blank>signature<S2SV_blank>of<S2SV_blank>TREE\\\\n\" ) ; return MYSOFA_INVALID_FORMAT ; } log ( \"%08lX<S2SV_blank>%.4s\\\\n\" , ( uint64_t ) ftell ( reader -> fhd ) - 4 , buf ) ; node_type = ( uint8_t ) fgetc ( reader -> fhd ) ; node_level = ( uint8_t ) fgetc ( reader -> fhd ) ; entries_used = ( uint16_t ) readValue ( reader , 2 ) ; if ( entries_used > 0x1000 ) return MYSOFA_UNSUPPORTED_FORMAT ; address_of_left_sibling = readValue ( reader , reader -> superblock . size_of_offsets ) ; address_of_right_sibling = readValue ( reader , reader -> superblock . size_of_offsets ) ; elements = 1 ; for ( j = 0 ; j < data -> ds . dimensionality ; j ++ ) elements *= data -> datalayout_chunk [ j ] ; dy = data -> datalayout_chunk [ 1 ] ; dz = data -> datalayout_chunk [ 2 ] ; sx = data -> ds . dimension_size [ 0 ] ; sy = data -> ds . dimension_size [ 1 ] ; sz = data -> ds . dimension_size [ 2 ] ; dzy = dz * dy ; szy = sz * sy ; size = data -> datalayout_chunk [ data -> ds . dimensionality ] ; log ( \"elements<S2SV_blank>%d<S2SV_blank>size<S2SV_blank>%d\\\\n\" , elements , size ) ; if ( ! ( output = malloc ( elements * size ) ) ) { return MYSOFA_NO_MEMORY ; } for ( e = 0 ; e < entries_used * 2 ; e ++ ) { if ( node_type == 0 ) { key = readValue ( reader , reader -> superblock . size_of_lengths ) ; } else { size_of_chunk = ( uint32_t ) readValue ( reader , 4 ) ; filter_mask = ( uint32_t ) readValue ( reader , 4 ) ; if ( filter_mask ) { log ( \"TREE<S2SV_blank>all<S2SV_blank>filters<S2SV_blank>must<S2SV_blank>be<S2SV_blank>enabled\\\\n\" ) ; free ( output ) ; return MYSOFA_INVALID_FORMAT ; } for ( j = 0 ; j < data -> ds . dimensionality ; j ++ ) { start [ j ] = readValue ( reader , 8 ) ; log ( \"start<S2SV_blank>%d<S2SV_blank>%lu\\\\n\" , j , start [ j ] ) ; } if ( readValue ( reader , 8 ) ) { break ; } child_pointer = readValue ( reader , reader -> superblock . size_of_offsets ) ; log ( \"<S2SV_blank>data<S2SV_blank>at<S2SV_blank>%lX<S2SV_blank>len<S2SV_blank>%u\\\\n\" , child_pointer , size_of_chunk ) ; store = ftell ( reader -> fhd ) ; if ( fseek ( reader -> fhd , child_pointer , SEEK_SET ) < 0 ) { free ( output ) ; return errno ; } if ( ! ( input = malloc ( size_of_chunk ) ) ) { free ( output ) ; return MYSOFA_NO_MEMORY ; } if ( fread ( input , 1 , size_of_chunk , reader -> fhd ) != size_of_chunk ) { free ( output ) ; free ( input ) ; return MYSOFA_INVALID_FORMAT ; } olen = elements * size ; err = gunzip ( size_of_chunk , input , & olen , output ) ; free ( input ) ; log ( \"<S2SV_blank><S2SV_blank><S2SV_blank>gunzip<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , err , olen , elements * size ) ; if ( err || olen != elements * size ) { free ( output ) ; return MYSOFA_INVALID_FORMAT ; } switch ( data -> ds . dimensionality ) { case 1 : for ( i = 0 ; i < olen ; i ++ ) { b = i / elements ; x = i % elements + start [ 0 ] ; <S2SV_StartBug> if ( x < sx ) { <S2SV_EndBug> <S2SV_StartBug> j = x * size + b ; <S2SV_EndBug> ( ( char * ) data -> data ) [ j ] = output [ i ] ; } } break ; case 2 : for ( i = 0 ; i < olen ; i ++ ) { b = i / elements ; x = i % elements ; y = x % dy + start [ 1 ] ; x = x / dy + start [ 0 ] ; <S2SV_StartBug> if ( y < sy && x < sx ) { <S2SV_EndBug> <S2SV_StartBug> j = ( ( x * sy + y ) * size ) + b ; <S2SV_EndBug> ( ( char * ) data -> data ) [ j ] = output [ i ] ; } } break ; case 3 : for ( i = 0 ; i < olen ; i ++ ) { b = i / elements ; x = i % elements ; z = x % dz + start [ 2 ] ; y = ( x / dz ) % dy + start [ 1 ] ; x = ( x / dzy ) + start [ 0 ] ; <S2SV_StartBug> if ( z < sz && y < sy && x < sx ) { <S2SV_EndBug> j = ( x * szy + y * sz + z ) * size + b ; <S2SV_StartBug> ( ( char * ) data -> data ) [ j ] = output [ i ] ; <S2SV_EndBug> } } break ; default : log ( \"invalid<S2SV_blank>dim\\\\n\" ) ; return MYSOFA_INTERNAL_ERROR ; } if ( fseek ( reader -> fhd , store , SEEK_SET ) < 0 ) { free ( output ) ; return errno ; } } } free ( output ) ; if ( fseek ( reader -> fhd , 4 , SEEK_CUR ) < 0 ) return errno ; return MYSOFA_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ] ; <S2SV_ModEnd> j = x <S2SV_ModStart> + b ; if ( j >= 0 && j < elements * size ) { <S2SV_ModStart> 0 ] ; <S2SV_ModEnd> j = ( <S2SV_ModStart> + b ; if ( j >= 0 && j < elements * size ) { <S2SV_ModStart> 0 ] ; <S2SV_ModEnd> j = ( <S2SV_ModStart> + b ; if ( j >= 0 && j < elements * size ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static void FstringParser_Init ( FstringParser * state ) { state -> last_str = NULL ; <S2SV_StartBug> ExprList_Init ( & state -> expr_list ) ; <S2SV_EndBug> FstringParser_check_invariants ( state ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; state -> fmode = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21300\n\n```\nCWE-59 int mingw_rmdir ( const char * pathname ) { int ret , tries = 0 ; wchar_t wpathname [ MAX_PATH ] ; if ( xutftowcs_path ( wpathname , pathname ) < 0 ) return - 1 ; while ( ( ret = _wrmdir ( wpathname ) ) == - 1 && tries < ARRAY_SIZE ( delay ) ) { if ( ! is_file_in_use_error ( GetLastError ( ) ) ) errno = err_win_to_posix ( GetLastError ( ) ) ; if ( errno != EACCES ) break ; if ( ! is_dir_empty ( wpathname ) ) { errno = ENOTEMPTY ; break ; } Sleep ( delay [ tries ] ) ; tries ++ ; } while ( ret == - 1 && errno == EACCES && is_file_in_use_error ( GetLastError ( ) ) && ask_yes_no_if_possible ( \"Deletion<S2SV_blank>of<S2SV_blank>directory<S2SV_blank>\\'%s\\'<S2SV_blank>failed.<S2SV_blank>\" \"Should<S2SV_blank>I<S2SV_blank>try<S2SV_blank>again?\" , pathname ) ) ret = _wrmdir ( wpathname ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> wpathname ) ; if ( ! ret ) invalidate_lstat_cache ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7895\n\n```\nCWE-119 int nfs3svc_decode_writeargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd3_writeargs * args ) { unsigned int len , v , hdr , dlen ; u32 max_blocksize = svc_max_payload ( rqstp ) ; struct kvec * head = rqstp -> rq_arg . head ; struct kvec * tail = rqstp -> rq_arg . tail ; p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; p = xdr_decode_hyper ( p , & args -> offset ) ; args -> count = ntohl ( * p ++ ) ; args -> stable = ntohl ( * p ++ ) ; <S2SV_StartBug> len = args -> len = ntohl ( * p ++ ) ; <S2SV_EndBug> if ( args -> count != args -> len ) return 0 ; hdr = ( void * ) p - head -> iov_base ; dlen = head -> iov_len + rqstp -> rq_arg . page_len + tail -> iov_len - hdr ; if ( dlen < XDR_QUADLEN ( len ) * 4 ) return 0 ; if ( args -> count > max_blocksize ) { args -> count = max_blocksize ; len = args -> len = max_blocksize ; } rqstp -> rq_vec [ 0 ] . iov_base = ( void * ) p ; rqstp -> rq_vec [ 0 ] . iov_len = head -> iov_len - hdr ; v = 0 ; while ( len > rqstp -> rq_vec [ v ] . iov_len ) { len -= rqstp -> rq_vec [ v ] . iov_len ; v ++ ; rqstp -> rq_vec [ v ] . iov_base = page_address ( rqstp -> rq_pages [ v ] ) ; rqstp -> rq_vec [ v ] . iov_len = PAGE_SIZE ; } rqstp -> rq_vec [ v ] . iov_len = len ; args -> vlen = v + 1 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p ++ ) ; if ( ( void * ) p > head -> iov_base + head -> iov_len ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-354(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18672\n\n```\nCWE-354 void recovery_character ( const char * character ) { <S2SV_StartBug> if ( ! awaiting_character ) { <S2SV_EndBug> recovery_abort ( ) ; fsm_sendFailure ( FailureType_Failure_UnexpectedMessage , \"Not<S2SV_blank>in<S2SV_blank>Recovery<S2SV_blank>mode\" ) ; layoutHome ( ) ; return ; } if ( strlen ( mnemonic ) + 1 > MNEMONIC_BUF - 1 ) { recovery_abort ( ) ; fsm_sendFailure ( FailureType_Failure_UnexpectedMessage , \"Too<S2SV_blank>many<S2SV_blank>characters<S2SV_blank>attempted<S2SV_blank>during<S2SV_blank>recovery\" ) ; layoutHome ( ) ; return ; } char * pos = strchr ( cipher , character [ 0 ] ) ; if ( character [ 0 ] != '<S2SV_blank>' && pos == NULL ) { recovery_abort ( ) ; fsm_sendFailure ( FailureType_Failure_SyntaxError , \"Character<S2SV_blank>must<S2SV_blank>be<S2SV_blank>from<S2SV_blank>a<S2SV_blank>to<S2SV_blank>z\" ) ; layoutHome ( ) ; return ; } static int uncyphered_word_count = 0 ; static bool definitely_using_cipher = false ; static CONFIDENTIAL char coded_word [ 12 ] ; static CONFIDENTIAL char decoded_word [ 12 ] ; if ( ! mnemonic [ 0 ] ) { uncyphered_word_count = 0 ; definitely_using_cipher = false ; memzero ( coded_word , sizeof ( coded_word ) ) ; memzero ( decoded_word , sizeof ( decoded_word ) ) ; } char decoded_character [ 2 ] = \"<S2SV_blank>\" ; if ( character [ 0 ] != '<S2SV_blank>' ) { decoded_character [ 0 ] = english_alphabet [ ( int ) ( pos - cipher ) ] ; strlcat ( coded_word , character , sizeof ( coded_word ) ) ; strlcat ( decoded_word , decoded_character , sizeof ( decoded_word ) ) ; if ( enforce_wordlist && 4 <= strlen ( coded_word ) ) { bool maybe_not_using_cipher = attempt_auto_complete ( coded_word ) ; bool maybe_using_cipher = attempt_auto_complete ( decoded_word ) ; if ( ! maybe_not_using_cipher && maybe_using_cipher ) { definitely_using_cipher = true ; } else if ( maybe_not_using_cipher && ! definitely_using_cipher && MAX_UNCYPHERED_WORDS < uncyphered_word_count ++ ) { recovery_abort ( ) ; fsm_sendFailure ( FailureType_Failure_SyntaxError , \"Words<S2SV_blank>were<S2SV_blank>not<S2SV_blank>entered<S2SV_blank>correctly.<S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>you<S2SV_blank>are<S2SV_blank>using<S2SV_blank>the<S2SV_blank>substition<S2SV_blank>cipher.\" ) ; layoutHome ( ) ; return ; } } } else { memzero ( coded_word , sizeof ( coded_word ) ) ; memzero ( decoded_word , sizeof ( decoded_word ) ) ; } strlcat ( mnemonic , decoded_character , MNEMONIC_BUF ) ; next_character ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! awaiting_character || ! recovery_started\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static BOOLEAN flush_incoming_que_on_wr_signal_l ( l2cap_socket * sock ) { uint8_t * buf ; uint32_t len ; while ( packet_get_head_l ( sock , & buf , & len ) ) { <S2SV_StartBug> int sent = send ( sock -> our_fd , buf , len , MSG_DONTWAIT ) ; <S2SV_EndBug> if ( sent == ( signed ) len ) osi_free ( buf ) ; else if ( sent >= 0 ) { packet_put_head_l ( sock , buf + sent , len - sent ) ; osi_free ( buf ) ; if ( ! sent ) return TRUE ; } else { packet_put_head_l ( sock , buf , len ) ; osi_free ( buf ) ; return errno == EINTR || errno == EWOULDBLOCK || errno == EAGAIN ; } } return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int sent = TEMP_FAILURE_RETRY ( <S2SV_ModStart> len , MSG_DONTWAIT )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19069\n\n```\nCWE-401 static int fastrpc_dma_buf_attach ( struct dma_buf * dmabuf , struct dma_buf_attachment * attachment ) { struct fastrpc_dma_buf_attachment * a ; struct fastrpc_buf * buffer = dmabuf -> priv ; int ret ; a = kzalloc ( sizeof ( * a ) , GFP_KERNEL ) ; if ( ! a ) return - ENOMEM ; ret = dma_get_sgtable ( buffer -> dev , & a -> sgt , buffer -> virt , FASTRPC_PHYS ( buffer -> phys ) , buffer -> size ) ; if ( ret < 0 ) { dev_err ( buffer -> dev , \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>scatterlist<S2SV_blank>from<S2SV_blank>DMA<S2SV_blank>API\\\\n\" ) ; <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> } a -> dev = attachment -> dev ; INIT_LIST_HEAD ( & a -> node ) ; attachment -> priv = a ; mutex_lock ( & buffer -> lock ) ; list_add ( & a -> node , & buffer -> attachments ) ; mutex_unlock ( & buffer -> lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>scatterlist<S2SV_blank>from<S2SV_blank>DMA<S2SV_blank>API\\\\n\" ) ; kfree ( a ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_excepthandler ( PyObject * obj , excepthandler_ty * out , PyArena * arena ) { int isinstance ; PyObject * tmp = NULL ; int lineno ; int col_offset ; if ( obj == Py_None ) { * out = NULL ; return 0 ; } <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_lineno ) ) { <S2SV_EndBug> int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_lineno ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & lineno , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>excepthandler\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_col_offset ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_col_offset ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & col_offset , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>excepthandler\" ) ; return 1 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) ExceptHandler_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty type ; identifier name ; asdl_seq * body ; <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_type ) ) { <S2SV_EndBug> int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_type ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & type , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> type = NULL ; } if ( exists_not_none ( obj , & PyId_name ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_name ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> name = NULL ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ExceptHandler<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Ta3_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ExceptHandler<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ExceptHandler\" ) ; <S2SV_EndBug> return 1 ; } * out = ExceptHandler ( type , name , body , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>some<S2SV_blank>sort<S2SV_blank>of<S2SV_blank>excepthandler,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%R\" , obj ) ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>excepthandler\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_col_offset , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>excepthandler\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } isinstance <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_type , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type = NULL ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_name , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; name = NULL ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ExceptHandler\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { stmt_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } * out = ExceptHandler ( type , name , body , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } PyErr_Format <S2SV_ModEnd> ( PyExc_TypeError , <S2SV_ModStart> ( PyExc_TypeError , <S2SV_ModEnd> \"expected<S2SV_blank>some<S2SV_blank>sort<S2SV_blank>of<S2SV_blank>excepthandler,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%R\" , obj\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8061\n\n```\nCWE-119 int usb_cypress_load_firmware ( struct usb_device * udev , const struct firmware * fw , int type ) { struct hexline * hx ; <S2SV_StartBug> u8 reset ; <S2SV_EndBug> int ret , pos = 0 ; <S2SV_StartBug> hx = kmalloc ( sizeof ( * hx ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! hx ) return - ENOMEM ; reset = 1 ; <S2SV_StartBug> if ( ( ret = usb_cypress_writemem ( udev , cypress [ type ] . cpu_cs_register , & reset , 1 ) ) != 1 ) <S2SV_EndBug> err ( \"could<S2SV_blank>not<S2SV_blank>stop<S2SV_blank>the<S2SV_blank>USB<S2SV_blank>controller<S2SV_blank>CPU.\" ) ; while ( ( ret = dvb_usb_get_hexline ( fw , hx , & pos ) ) > 0 ) { deb_fw ( \"writing<S2SV_blank>to<S2SV_blank>address<S2SV_blank>0x%04x<S2SV_blank>(buffer:<S2SV_blank>0x%02x<S2SV_blank>%02x)\\\\n\" , hx -> addr , hx -> len , hx -> chk ) ; ret = usb_cypress_writemem ( udev , hx -> addr , hx -> data , hx -> len ) ; if ( ret != hx -> len ) { err ( \"error<S2SV_blank>while<S2SV_blank>transferring<S2SV_blank>firmware<S2SV_blank>(transferred<S2SV_blank>size:<S2SV_blank>%d,<S2SV_blank>block<S2SV_blank>size:<S2SV_blank>%d)\" , ret , hx -> len ) ; ret = - EINVAL ; break ; } } if ( ret < 0 ) { err ( \"firmware<S2SV_blank>download<S2SV_blank>failed<S2SV_blank>at<S2SV_blank>%d<S2SV_blank>with<S2SV_blank>%d\" , pos , ret ) ; <S2SV_StartBug> kfree ( hx ) ; <S2SV_EndBug> return ret ; } if ( ret == 0 ) { <S2SV_StartBug> reset = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( ret || usb_cypress_writemem ( udev , cypress [ type ] . cpu_cs_register , & reset , 1 ) != 1 ) { <S2SV_EndBug> err ( \"could<S2SV_blank>not<S2SV_blank>restart<S2SV_blank>the<S2SV_blank>USB<S2SV_blank>controller<S2SV_blank>CPU.\" ) ; ret = - EINVAL ; } } else ret = - EIO ; <S2SV_StartBug> kfree ( hx ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> hx ; u8 * buf <S2SV_ModEnd> ; int ret <S2SV_ModStart> = 0 ; u16 cpu_cs_register = <S2SV_ModEnd> cypress [ type <S2SV_ModStart> ] . cpu_cs_register ; buf = kmalloc ( sizeof ( * hx ) , GFP_KERNEL ) ; if ( ! buf ) return - ENOMEM ; hx = ( struct hexline * ) buf ; buf [ 0 ] = 1 ; if ( usb_cypress_writemem ( udev , cpu_cs_register , buf , 1 <S2SV_ModEnd> ) != 1 <S2SV_ModStart> ; kfree ( buf <S2SV_ModEnd> ) ; return <S2SV_ModStart> 0 ) { buf [ 0 ] = 0 ; if ( <S2SV_ModEnd> usb_cypress_writemem ( udev <S2SV_ModStart> ( udev , cpu_cs_register , buf <S2SV_ModEnd> , 1 ) <S2SV_ModStart> ; kfree ( buf <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 <S2SV_StartBug> void set_header ( HttpResponse res , const char * name , const char * value ) { <S2SV_EndBug> HttpHeader h = NULL ; ASSERT ( res ) ; ASSERT ( name ) ; NEW ( h ) ; h -> name = Str_dup ( name ) ; <S2SV_StartBug> h -> value = Str_dup ( value ) ; <S2SV_EndBug> if ( res -> headers ) { HttpHeader n , p ; for ( n = p = res -> headers ; p ; n = p , p = p -> next ) { if ( IS ( p -> name , name ) ) { FREE ( p -> value ) ; p -> value = Str_dup ( value ) ; destroy_entry ( h ) ; return ; } } n -> next = h ; } else { res -> headers = h ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * value , ... <S2SV_ModStart> name ) ; va_list ap ; va_start ( ap , value ) ; <S2SV_ModStart> -> value = Str_vcat ( value , ap ) ; va_end ( ap <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14727\n\n```\nCWE-119 char * logger_get_mask_expanded ( struct t_gui_buffer * buffer , const char * mask ) { <S2SV_StartBug> char * mask2 , * mask_decoded , * mask_decoded2 , * mask_decoded3 , * mask_decoded4 ; <S2SV_EndBug> char * mask_decoded5 ; const char * dir_separator ; int length ; time_t seconds ; struct tm * date_tmp ; mask2 = NULL ; <S2SV_StartBug> mask_decoded = NULL ; <S2SV_EndBug> mask_decoded2 = NULL ; mask_decoded3 = NULL ; mask_decoded4 = NULL ; mask_decoded5 = NULL ; dir_separator = weechat_info_get ( \"dir_separator\" , \"\" ) ; if ( ! dir_separator ) return NULL ; <S2SV_StartBug> mask2 = weechat_string_replace ( mask , dir_separator , \"\\\\01\" ) ; <S2SV_EndBug> if ( ! mask2 ) goto end ; mask_decoded = weechat_buffer_string_replace_local_var ( buffer , mask2 ) ; if ( ! mask_decoded ) goto end ; mask_decoded2 = weechat_string_replace ( mask_decoded , dir_separator , weechat_config_string ( logger_config_file_replacement_char ) ) ; if ( ! mask_decoded2 ) goto end ; # ifdef __CYGWIN__ mask_decoded3 = weechat_string_replace ( mask_decoded2 , \"\\\\\\\\\" , weechat_config_string ( logger_config_file_replacement_char ) ) ; # else mask_decoded3 = strdup ( mask_decoded2 ) ; # endif if ( ! mask_decoded3 ) goto end ; mask_decoded4 = weechat_string_replace ( mask_decoded3 , \"\\\\01\" , dir_separator ) ; if ( ! mask_decoded4 ) goto end ; length = strlen ( mask_decoded4 ) + 256 + 1 ; <S2SV_StartBug> mask_decoded5 = malloc ( length ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! mask_decoded5 ) <S2SV_EndBug> goto end ; seconds = time ( NULL ) ; date_tmp = localtime ( & seconds ) ; <S2SV_StartBug> mask_decoded5 [ 0 ] = '\\\\0' ; <S2SV_EndBug> <S2SV_StartBug> strftime ( mask_decoded5 , length - 1 , mask_decoded4 , date_tmp ) ; <S2SV_EndBug> if ( weechat_config_boolean ( logger_config_file_name_lower_case ) ) <S2SV_StartBug> weechat_string_tolower ( mask_decoded5 ) ; <S2SV_EndBug> if ( weechat_logger_plugin -> debug ) { weechat_printf_date_tags ( NULL , 0 , \"no_log\" , \"%s:<S2SV_blank>buffer<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\",<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\",<S2SV_blank>\" \"decoded<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\"\" , LOGGER_PLUGIN_NAME , weechat_buffer_get_string ( buffer , \"name\" ) , <S2SV_StartBug> mask , mask_decoded5 ) ; <S2SV_EndBug> } end : if ( mask2 ) free ( mask2 ) ; <S2SV_StartBug> if ( mask_decoded ) <S2SV_EndBug> <S2SV_StartBug> free ( mask_decoded ) ; <S2SV_EndBug> if ( mask_decoded2 ) <S2SV_StartBug> free ( mask_decoded2 ) ; <S2SV_EndBug> if ( mask_decoded3 ) <S2SV_StartBug> free ( mask_decoded3 ) ; <S2SV_EndBug> if ( mask_decoded4 ) <S2SV_StartBug> free ( mask_decoded4 ) ; <S2SV_EndBug> <S2SV_StartBug> return mask_decoded5 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mask2 , * mask3 , * mask4 , * mask5 , * mask6 , * mask7 <S2SV_ModEnd> ; const char <S2SV_ModStart> = NULL ; mask3 = NULL ; mask4 = NULL ; mask5 = NULL ; mask6 = NULL ; mask7 <S2SV_ModEnd> = NULL ; <S2SV_ModStart> return NULL ; length = strlen ( mask <S2SV_ModEnd> ) + 256 <S2SV_ModStart> + 1 ; mask2 <S2SV_ModEnd> = malloc ( <S2SV_ModStart> if ( ! mask2 <S2SV_ModEnd> ) goto end <S2SV_ModStart> seconds ) ; mask2 <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = '\\\\0' ; if ( strftime ( mask2 <S2SV_ModEnd> , length - <S2SV_ModStart> - 1 , mask <S2SV_ModEnd> , date_tmp ) <S2SV_ModStart> , date_tmp ) == 0 ) mask2 [ 0 ] = '\\\\0' ; mask3 = weechat_string_replace ( mask2 , dir_separator , \"\\\\01\" ) ; if ( ! mask3 ) goto end ; mask4 = weechat_buffer_string_replace_local_var ( buffer , mask3 ) ; if ( ! mask4 ) goto end ; mask5 = weechat_string_replace ( mask4 , dir_separator , weechat_config_string ( logger_config_file_replacement_char ) ) ; if ( ! mask5 ) goto end ; # ifdef __CYGWIN__ mask6 = weechat_string_replace ( mask5 , \"\\\\\\\\\" , weechat_config_string ( logger_config_file_replacement_char ) ) ; # else mask6 = strdup ( mask5 ) ; # endif if ( ! mask6 ) goto end ; mask7 = weechat_string_replace ( mask6 , \"\\\\01\" , dir_separator ) ; if ( ! mask7 ) goto end <S2SV_ModStart> ) weechat_string_tolower ( mask7 <S2SV_ModEnd> ) ; if <S2SV_ModStart> , mask , mask7 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; if ( mask3 <S2SV_ModEnd> ) free ( <S2SV_ModStart> ) free ( mask3 ) ; if ( mask4 <S2SV_ModEnd> ) free ( <S2SV_ModStart> ) free ( mask4 ) ; if ( mask5 <S2SV_ModEnd> ) free ( <S2SV_ModStart> ) free ( mask5 ) ; if ( mask6 <S2SV_ModEnd> ) free ( <S2SV_ModStart> ) free ( mask6 <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return mask7 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-32020\n\n```\nCWE-119 void * pvPortMalloc ( size_t xWantedSize ) { void * pvReturn = NULL ; static uint8_t * pucAlignedHeap = NULL ; # if ( portBYTE_ALIGNMENT != 1 ) { if ( xWantedSize & portBYTE_ALIGNMENT_MASK ) { <S2SV_StartBug> xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) ) ; <S2SV_EndBug> } } # endif vTaskSuspendAll ( ) ; { if ( pucAlignedHeap == NULL ) { pucAlignedHeap = ( uint8_t * ) ( ( ( portPOINTER_SIZE_TYPE ) & ucHeap [ portBYTE_ALIGNMENT ] ) & ( ~ ( ( portPOINTER_SIZE_TYPE ) portBYTE_ALIGNMENT_MASK ) ) ) ; } <S2SV_StartBug> if ( ( ( xNextFreeByte + xWantedSize ) < configADJUSTED_HEAP_SIZE ) && <S2SV_EndBug> ( ( xNextFreeByte + xWantedSize ) > xNextFreeByte ) ) { pvReturn = pucAlignedHeap + xNextFreeByte ; xNextFreeByte += xWantedSize ; } traceMALLOC ( pvReturn , xWantedSize ) ; } ( void ) xTaskResumeAll ( ) ; # if ( configUSE_MALLOC_FAILED_HOOK == 1 ) { if ( pvReturn == NULL ) { extern void vApplicationMallocFailedHook ( void ) ; vApplicationMallocFailedHook ( ) ; } } # endif return pvReturn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> portBYTE_ALIGNMENT_MASK ) { if ( ( xWantedSize + ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) ) ) > xWantedSize ) { <S2SV_ModStart> ) ) ; } else { xWantedSize = 0 ; } <S2SV_ModStart> } if ( ( xWantedSize > 0 ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int em_call ( struct x86_emulate_ctxt * ctxt ) <S2SV_StartBug> { <S2SV_EndBug> long rel = ctxt -> src . val ; ctxt -> src . val = ( unsigned long ) ctxt -> _eip ; <S2SV_StartBug> jmp_rel ( ctxt , rel ) ; <S2SV_EndBug> return em_push ( ctxt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt ) { int rc ; <S2SV_ModStart> -> _eip ; rc = <S2SV_ModStart> , rel ) ; if ( rc != X86EMUL_CONTINUE ) return rc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-5705\n\n```\nCWE-000 apr_status_t modsecurity_tx_init ( modsec_rec * msr ) { const char * s = NULL ; const apr_array_header_t * arr ; char * semicolon = NULL ; char * comma = NULL ; apr_table_entry_t * te ; int i ; apr_pool_cleanup_register ( msr -> mp , msr , modsecurity_tx_cleanup , apr_pool_cleanup_null ) ; msr -> request_content_length = - 1 ; s = apr_table_get ( msr -> request_headers , \"Content-Length\" ) ; if ( s != NULL ) { msr -> request_content_length = strtol ( s , NULL , 10 ) ; } msr -> reqbody_chunked = 0 ; msr -> reqbody_should_exist = 0 ; if ( msr -> request_content_length == - 1 ) { char * transfer_encoding = ( char * ) apr_table_get ( msr -> request_headers , \"Transfer-Encoding\" ) ; <S2SV_StartBug> if ( ( transfer_encoding != NULL ) && ( strstr ( transfer_encoding , \"chunked\" ) != NULL ) ) { <S2SV_EndBug> msr -> reqbody_should_exist = 1 ; msr -> reqbody_chunked = 1 ; } } else { msr -> reqbody_should_exist = 1 ; } msr -> request_content_type = NULL ; s = apr_table_get ( msr -> request_headers , \"Content-Type\" ) ; if ( s != NULL ) msr -> request_content_type = s ; if ( ( msr -> request_content_type != NULL ) && ( strncasecmp ( msr -> request_content_type , \"application/x-www-form-urlencoded\" , 33 ) == 0 ) ) { msr -> msc_reqbody_storage = MSC_REQBODY_MEMORY ; msr -> msc_reqbody_spilltodisk = 0 ; msr -> msc_reqbody_processor = \"URLENCODED\" ; } else { if ( ( msr -> request_content_length != - 1 ) && ( msr -> request_content_length > msr -> txcfg -> reqbody_inmemory_limit ) ) { msr -> msc_reqbody_storage = MSC_REQBODY_DISK ; } msr -> msc_reqbody_storage = MSC_REQBODY_MEMORY ; msr -> msc_reqbody_spilltodisk = 1 ; if ( msr -> request_content_type != NULL ) { if ( strncasecmp ( msr -> request_content_type , \"multipart/form-data\" , 19 ) == 0 ) { msr -> msc_reqbody_processor = \"MULTIPART\" ; } } } if ( msr -> txcfg -> reqbody_buffering != REQUEST_BODY_FORCEBUF_OFF ) { msr -> msc_reqbody_storage = MSC_REQBODY_MEMORY ; msr -> msc_reqbody_spilltodisk = 0 ; } msr -> arguments = apr_table_make ( msr -> mp , 32 ) ; if ( msr -> arguments == NULL ) return - 1 ; if ( msr -> query_string != NULL ) { int invalid_count = 0 ; if ( parse_arguments ( msr , msr -> query_string , strlen ( msr -> query_string ) , msr -> txcfg -> argument_separator , \"QUERY_STRING\" , msr -> arguments , & invalid_count ) < 0 ) { msr_log ( msr , 1 , \"Initialisation:<S2SV_blank>Error<S2SV_blank>occurred<S2SV_blank>while<S2SV_blank>parsing<S2SV_blank>QUERY_STRING<S2SV_blank>arguments.\" ) ; return - 1 ; } if ( invalid_count ) { msr -> urlencoded_error = 1 ; } } msr -> arguments_to_sanitize = apr_table_make ( msr -> mp , 16 ) ; if ( msr -> arguments_to_sanitize == NULL ) return - 1 ; msr -> request_headers_to_sanitize = apr_table_make ( msr -> mp , 16 ) ; if ( msr -> request_headers_to_sanitize == NULL ) return - 1 ; msr -> response_headers_to_sanitize = apr_table_make ( msr -> mp , 16 ) ; if ( msr -> response_headers_to_sanitize == NULL ) return - 1 ; msr -> pattern_to_sanitize = apr_table_make ( msr -> mp , 32 ) ; if ( msr -> pattern_to_sanitize == NULL ) return - 1 ; msr -> removed_targets = apr_table_make ( msr -> mp , 16 ) ; if ( msr -> removed_targets == NULL ) return - 1 ; msr -> request_cookies = apr_table_make ( msr -> mp , 16 ) ; if ( msr -> request_cookies == NULL ) return - 1 ; msr -> matched_vars = apr_table_make ( msr -> mp , 8 ) ; if ( msr -> matched_vars == NULL ) return - 1 ; apr_table_clear ( msr -> matched_vars ) ; msr -> perf_rules = apr_table_make ( msr -> mp , 8 ) ; if ( msr -> perf_rules == NULL ) return - 1 ; apr_table_clear ( msr -> perf_rules ) ; arr = apr_table_elts ( msr -> request_headers ) ; te = ( apr_table_entry_t * ) arr -> elts ; for ( i = 0 ; i < arr -> nelts ; i ++ ) { if ( strcasecmp ( te [ i ] . key , \"Cookie\" ) == 0 ) { if ( msr -> txcfg -> cookie_format == COOKIES_V0 ) { semicolon = apr_pstrdup ( msr -> mp , te [ i ] . val ) ; while ( ( * semicolon != 0 ) && ( * semicolon != ';' ) ) semicolon ++ ; if ( * semicolon == ';' ) { parse_cookies_v0 ( msr , te [ i ] . val , msr -> request_cookies , \";\" ) ; } else { comma = apr_pstrdup ( msr -> mp , te [ i ] . val ) ; while ( ( * comma != 0 ) && ( * comma != ',' ) ) comma ++ ; if ( * comma == ',' ) { comma ++ ; if ( * comma == 0x20 ) { if ( msr -> txcfg -> debuglog_level >= 5 ) { msr_log ( msr , 5 , \"Cookie<S2SV_blank>v0<S2SV_blank>parser:<S2SV_blank>Using<S2SV_blank>comma<S2SV_blank>as<S2SV_blank>a<S2SV_blank>separator.<S2SV_blank>Semi-colon<S2SV_blank>was<S2SV_blank>not<S2SV_blank>identified!\" ) ; } parse_cookies_v0 ( msr , te [ i ] . val , msr -> request_cookies , \",\" ) ; } else { parse_cookies_v0 ( msr , te [ i ] . val , msr -> request_cookies , \";\" ) ; } } else { parse_cookies_v0 ( msr , te [ i ] . val , msr -> request_cookies , \";\" ) ; } } } else { parse_cookies_v1 ( msr , te [ i ] . val , msr -> request_cookies ) ; } } } msr -> tx_vars = apr_table_make ( msr -> mp , 32 ) ; if ( msr -> tx_vars == NULL ) return - 1 ; msr -> geo_vars = apr_table_make ( msr -> mp , 8 ) ; if ( msr -> geo_vars == NULL ) return - 1 ; msr -> collections_original = apr_table_make ( msr -> mp , 8 ) ; if ( msr -> collections_original == NULL ) return - 1 ; msr -> collections = apr_table_make ( msr -> mp , 8 ) ; if ( msr -> collections == NULL ) return - 1 ; msr -> collections_dirty = apr_table_make ( msr -> mp , 8 ) ; if ( msr -> collections_dirty == NULL ) return - 1 ; msr -> tcache = NULL ; msr -> tcache_items = 0 ; msr -> matched_rules = apr_array_make ( msr -> mp , 16 , sizeof ( void * ) ) ; if ( msr -> matched_rules == NULL ) return - 1 ; msr -> matched_var = ( msc_string * ) apr_pcalloc ( msr -> mp , sizeof ( msc_string ) ) ; if ( msr -> matched_var == NULL ) return - 1 ; msr -> highest_severity = 255 ; msr -> removed_rules = apr_array_make ( msr -> mp , 16 , sizeof ( char * ) ) ; if ( msr -> removed_rules == NULL ) return - 1 ; msr -> removed_rules_tag = apr_array_make ( msr -> mp , 16 , sizeof ( char * ) ) ; if ( msr -> removed_rules_tag == NULL ) return - 1 ; msr -> removed_rules_msg = apr_array_make ( msr -> mp , 16 , sizeof ( char * ) ) ; if ( msr -> removed_rules_msg == NULL ) return - 1 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) && ( m_strcasestr <S2SV_ModEnd> ( transfer_encoding ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13233\n\n```\nCWE-362 unsigned long insn_get_seg_base ( struct pt_regs * regs , int seg_reg_idx ) { <S2SV_StartBug> struct desc_struct * desc ; <S2SV_EndBug> short sel ; sel = get_segment_selector ( regs , seg_reg_idx ) ; if ( sel < 0 ) return - 1L ; if ( v8086_mode ( regs ) ) return ( unsigned long ) ( sel << 4 ) ; if ( user_64bit_mode ( regs ) ) { unsigned long base ; if ( seg_reg_idx == INAT_SEG_REG_FS ) rdmsrl ( MSR_FS_BASE , base ) ; else if ( seg_reg_idx == INAT_SEG_REG_GS ) rdmsrl ( MSR_KERNEL_GS_BASE , base ) ; else base = 0 ; return base ; } if ( ! sel ) return - 1L ; <S2SV_StartBug> desc = get_desc ( sel ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! desc ) <S2SV_EndBug> return - 1L ; <S2SV_StartBug> return get_desc_base ( desc ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct desc_struct <S2SV_ModEnd> desc ; short <S2SV_ModStart> - 1L ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! get_desc ( & desc , sel ) <S2SV_ModEnd> ) return - <S2SV_ModStart> return get_desc_base ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7414\n\n```\nCWE-119 int phar_parse_zipfile ( php_stream * fp , char * fname , int fname_len , char * alias , int alias_len , phar_archive_data * * pphar , char * * error ) { phar_zip_dir_end locator ; char buf [ sizeof ( locator ) + 65536 ] ; zend_long size ; php_uint16 i ; phar_archive_data * mydata = NULL ; phar_entry_info entry = { 0 } ; char * p = buf , * ext , * actual_alias = NULL ; char * metadata = NULL ; size = php_stream_tell ( fp ) ; if ( size > sizeof ( locator ) + 65536 ) { size = sizeof ( locator ) + 65536 ; if ( FAILURE == php_stream_seek ( fp , - size , SEEK_END ) ) { php_stream_close ( fp ) ; if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>search<S2SV_blank>for<S2SV_blank>end<S2SV_blank>of<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } return FAILURE ; } } else { php_stream_seek ( fp , 0 , SEEK_SET ) ; } if ( ! php_stream_read ( fp , buf , size ) ) { php_stream_close ( fp ) ; if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>data<S2SV_blank>to<S2SV_blank>search<S2SV_blank>for<S2SV_blank>end<S2SV_blank>of<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } return FAILURE ; } while ( ( p = ( char * ) memchr ( p + 1 , 'P' , ( size_t ) ( size - ( p + 1 - buf ) ) ) ) != NULL ) { if ( ( p - buf ) + sizeof ( locator ) <= size && ! memcmp ( p + 1 , \"K\\\\5\\\\6\" , 3 ) ) { memcpy ( ( void * ) & locator , ( void * ) p , sizeof ( locator ) ) ; if ( PHAR_GET_16 ( locator . centraldisk ) != 0 || PHAR_GET_16 ( locator . disknumber ) != 0 ) { php_stream_close ( fp ) ; if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>split<S2SV_blank>archives<S2SV_blank>spanning<S2SV_blank>multiple<S2SV_blank>zips<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>processed<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } return FAILURE ; } if ( PHAR_GET_16 ( locator . counthere ) != PHAR_GET_16 ( locator . count ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>corrupt<S2SV_blank>zip<S2SV_blank>archive,<S2SV_blank>conflicting<S2SV_blank>file<S2SV_blank>count<S2SV_blank>in<S2SV_blank>end<S2SV_blank>of<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>record<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } php_stream_close ( fp ) ; return FAILURE ; } mydata = pecalloc ( 1 , sizeof ( phar_archive_data ) , PHAR_G ( persist ) ) ; mydata -> is_persistent = PHAR_G ( persist ) ; if ( PHAR_GET_16 ( locator . comment_len ) ) { metadata = p + sizeof ( locator ) ; if ( PHAR_GET_16 ( locator . comment_len ) != size - ( metadata - buf ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>corrupt<S2SV_blank>zip<S2SV_blank>archive,<S2SV_blank>zip<S2SV_blank>file<S2SV_blank>comment<S2SV_blank>truncated<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } php_stream_close ( fp ) ; pefree ( mydata , mydata -> is_persistent ) ; return FAILURE ; } mydata -> metadata_len = PHAR_GET_16 ( locator . comment_len ) ; if ( phar_parse_metadata ( & metadata , & mydata -> metadata , PHAR_GET_16 ( locator . comment_len ) ) == FAILURE ) { mydata -> metadata_len = 0 ; ZVAL_NEW_STR ( & mydata -> metadata , zend_string_init ( metadata , PHAR_GET_16 ( locator . comment_len ) , mydata -> is_persistent ) ) ; } } else { ZVAL_UNDEF ( & mydata -> metadata ) ; } goto foundit ; } } php_stream_close ( fp ) ; if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>end<S2SV_blank>of<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } return FAILURE ; foundit : mydata -> fname = pestrndup ( fname , fname_len , mydata -> is_persistent ) ; # ifdef PHP_WIN32 phar_unixify_path_separators ( mydata -> fname , fname_len ) ; # endif mydata -> is_zip = 1 ; mydata -> fname_len = fname_len ; ext = strrchr ( mydata -> fname , '/' ) ; if ( ext ) { mydata -> ext = memchr ( ext , '.' , ( mydata -> fname + fname_len ) - ext ) ; if ( mydata -> ext == ext ) { mydata -> ext = memchr ( ext + 1 , '.' , ( mydata -> fname + fname_len ) - ext - 1 ) ; } if ( mydata -> ext ) { mydata -> ext_len = ( mydata -> fname + fname_len ) - mydata -> ext ; } } php_stream_seek ( fp , PHAR_GET_32 ( locator . cdir_offset ) , SEEK_SET ) ; zend_hash_init ( & mydata -> manifest , PHAR_GET_16 ( locator . count ) , zend_get_hash_value , destroy_phar_manifest_entry , ( zend_bool ) mydata -> is_persistent ) ; zend_hash_init ( & mydata -> mounted_dirs , 5 , zend_get_hash_value , NULL , ( zend_bool ) mydata -> is_persistent ) ; zend_hash_init ( & mydata -> virtual_dirs , PHAR_GET_16 ( locator . count ) * 2 , zend_get_hash_value , NULL , ( zend_bool ) mydata -> is_persistent ) ; entry . phar = mydata ; entry . is_zip = 1 ; entry . fp_type = PHAR_FP ; entry . is_persistent = mydata -> is_persistent ; # define PHAR_ZIP_FAIL_FREE ( errmsg , save ) zend_hash_destroy ( & mydata -> manifest ) ; mydata -> manifest . u . flags = 0 ; zend_hash_destroy ( & mydata -> mounted_dirs ) ; mydata -> mounted_dirs . u . flags = 0 ; zend_hash_destroy ( & mydata -> virtual_dirs ) ; mydata -> virtual_dirs . u . flags = 0 ; php_stream_close ( fp ) ; zval_dtor ( & mydata -> metadata ) ; if ( mydata -> signature ) { efree ( mydata -> signature ) ; } if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , errmsg , mydata -> fname ) ; } pefree ( mydata -> fname , mydata -> is_persistent ) ; if ( mydata -> alias ) { pefree ( mydata -> alias , mydata -> is_persistent ) ; } pefree ( mydata , mydata -> is_persistent ) ; efree ( save ) ; return FAILURE ; # define PHAR_ZIP_FAIL ( errmsg ) zend_hash_destroy ( & mydata -> manifest ) ; mydata -> manifest . u . flags = 0 ; zend_hash_destroy ( & mydata -> mounted_dirs ) ; mydata -> mounted_dirs . u . flags = 0 ; zend_hash_destroy ( & mydata -> virtual_dirs ) ; mydata -> virtual_dirs . u . flags = 0 ; php_stream_close ( fp ) ; zval_dtor ( & mydata -> metadata ) ; if ( mydata -> signature ) { efree ( mydata -> signature ) ; } if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , errmsg , mydata -> fname ) ; } pefree ( mydata -> fname , mydata -> is_persistent ) ; if ( mydata -> alias ) { pefree ( mydata -> alias , mydata -> is_persistent ) ; } pefree ( mydata , mydata -> is_persistent ) ; return FAILURE ; for ( i = 0 ; i < PHAR_GET_16 ( locator . count ) ; ++ i ) { phar_zip_central_dir_file zipentry ; zend_off_t beforeus = php_stream_tell ( fp ) ; if ( sizeof ( zipentry ) != php_stream_read ( fp , ( char * ) & zipentry , sizeof ( zipentry ) ) ) { PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>entry,<S2SV_blank>truncated\" ) ; } if ( memcmp ( \"PK\\\\1\\\\2\" , zipentry . signature , 4 ) ) { PHAR_ZIP_FAIL ( \"corrupted<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>entry,<S2SV_blank>no<S2SV_blank>magic<S2SV_blank>signature\" ) ; } if ( entry . is_persistent ) { entry . manifest_pos = i ; } entry . compressed_filesize = PHAR_GET_32 ( zipentry . compsize ) ; entry . uncompressed_filesize = PHAR_GET_32 ( zipentry . uncompsize ) ; entry . crc32 = PHAR_GET_32 ( zipentry . crc32 ) ; entry . timestamp = phar_zip_d2u_time ( zipentry . timestamp , zipentry . datestamp ) ; entry . flags = PHAR_ENT_PERM_DEF_FILE ; entry . header_offset = PHAR_GET_32 ( zipentry . offset ) ; entry . offset = entry . offset_abs = PHAR_GET_32 ( zipentry . offset ) + sizeof ( phar_zip_file_header ) + PHAR_GET_16 ( zipentry . filename_len ) + PHAR_GET_16 ( zipentry . extra_len ) ; if ( PHAR_GET_16 ( zipentry . flags ) & PHAR_ZIP_FLAG_ENCRYPTED ) { PHAR_ZIP_FAIL ( \"Cannot<S2SV_blank>process<S2SV_blank>encrypted<S2SV_blank>zip<S2SV_blank>files\" ) ; } if ( ! PHAR_GET_16 ( zipentry . filename_len ) ) { PHAR_ZIP_FAIL ( \"Cannot<S2SV_blank>process<S2SV_blank>zips<S2SV_blank>created<S2SV_blank>from<S2SV_blank>stdin<S2SV_blank>(zero-length<S2SV_blank>filename)\" ) ; } entry . filename_len = PHAR_GET_16 ( zipentry . filename_len ) ; entry . filename = ( char * ) pemalloc ( entry . filename_len + 1 , entry . is_persistent ) ; if ( entry . filename_len != php_stream_read ( fp , entry . filename , entry . filename_len ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>filename<S2SV_blank>from<S2SV_blank>central<S2SV_blank>directory,<S2SV_blank>truncated\" ) ; } entry . filename [ entry . filename_len ] = '\\\\0' ; if ( entry . filename [ entry . filename_len - 1 ] == '/' ) { entry . is_dir = 1 ; if ( entry . filename_len > 1 ) { entry . filename_len -- ; } entry . flags |= PHAR_ENT_PERM_DEF_DIR ; } else { entry . is_dir = 0 ; } if ( entry . filename_len == sizeof ( \".phar/signature.bin\" ) - 1 && ! strncmp ( entry . filename , \".phar/signature.bin\" , sizeof ( \".phar/signature.bin\" ) - 1 ) ) { size_t read ; php_stream * sigfile ; zend_off_t now ; char * sig ; now = php_stream_tell ( fp ) ; pefree ( entry . filename , entry . is_persistent ) ; sigfile = php_stream_fopen_tmpfile ( ) ; if ( ! sigfile ) { PHAR_ZIP_FAIL ( \"couldn\\'t<S2SV_blank>open<S2SV_blank>temporary<S2SV_blank>file\" ) ; } php_stream_seek ( fp , 0 , SEEK_SET ) ; php_stream_copy_to_stream_ex ( fp , sigfile , entry . header_offset , NULL ) ; php_stream_seek ( fp , PHAR_GET_32 ( locator . cdir_offset ) , SEEK_SET ) ; php_stream_copy_to_stream_ex ( fp , sigfile , beforeus - PHAR_GET_32 ( locator . cdir_offset ) , NULL ) ; if ( metadata ) { php_stream_write ( sigfile , metadata , PHAR_GET_16 ( locator . comment_len ) ) ; } php_stream_seek ( fp , sizeof ( phar_zip_file_header ) + entry . header_offset + entry . filename_len + PHAR_GET_16 ( zipentry . extra_len ) , SEEK_SET ) ; sig = ( char * ) emalloc ( entry . uncompressed_filesize ) ; read = php_stream_read ( fp , sig , entry . uncompressed_filesize ) ; <S2SV_StartBug> if ( read != entry . uncompressed_filesize ) { <S2SV_EndBug> php_stream_close ( sigfile ) ; efree ( sig ) ; PHAR_ZIP_FAIL ( \"signature<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>read\" ) ; } mydata -> sig_flags = PHAR_GET_32 ( sig ) ; if ( FAILURE == phar_verify_signature ( sigfile , php_stream_tell ( sigfile ) , mydata -> sig_flags , sig + 8 , entry . uncompressed_filesize - 8 , fname , & mydata -> signature , & mydata -> sig_len , error ) ) { efree ( sig ) ; if ( error ) { char * save ; php_stream_close ( sigfile ) ; spprintf ( & save , 4096 , \"signature<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>verified:<S2SV_blank>%s\" , * error ) ; efree ( * error ) ; PHAR_ZIP_FAIL_FREE ( save , save ) ; } else { php_stream_close ( sigfile ) ; PHAR_ZIP_FAIL ( \"signature<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>verified\" ) ; } } php_stream_close ( sigfile ) ; efree ( sig ) ; if ( i != PHAR_GET_16 ( locator . count ) - 1 ) { PHAR_ZIP_FAIL ( \"entries<S2SV_blank>exist<S2SV_blank>after<S2SV_blank>signature,<S2SV_blank>invalid<S2SV_blank>phar\" ) ; } continue ; } phar_add_virtual_dirs ( mydata , entry . filename , entry . filename_len ) ; if ( PHAR_GET_16 ( zipentry . extra_len ) ) { zend_off_t loc = php_stream_tell ( fp ) ; if ( FAILURE == phar_zip_process_extra ( fp , & entry , PHAR_GET_16 ( zipentry . extra_len ) ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"Unable<S2SV_blank>to<S2SV_blank>process<S2SV_blank>extra<S2SV_blank>field<S2SV_blank>header<S2SV_blank>for<S2SV_blank>file<S2SV_blank>in<S2SV_blank>central<S2SV_blank>directory\" ) ; } php_stream_seek ( fp , loc + PHAR_GET_16 ( zipentry . extra_len ) , SEEK_SET ) ; } switch ( PHAR_GET_16 ( zipentry . compressed ) ) { case PHAR_ZIP_COMP_NONE : break ; case PHAR_ZIP_COMP_DEFLATE : entry . flags |= PHAR_ENT_COMPRESSED_GZ ; if ( ! PHAR_G ( has_zlib ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"zlib<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>required\" ) ; } break ; case PHAR_ZIP_COMP_BZIP2 : entry . flags |= PHAR_ENT_COMPRESSED_BZ2 ; if ( ! PHAR_G ( has_bz2 ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"bzip2<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>required\" ) ; } break ; case 1 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Shrunk)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 2 : case 3 : case 4 : case 5 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Reduce)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 6 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Implode)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 7 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Tokenize)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 9 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Deflate64)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 10 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(PKWare<S2SV_blank>Implode/old<S2SV_blank>IBM<S2SV_blank>TERSE)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 14 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(LZMA)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 18 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(IBM<S2SV_blank>TERSE)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 19 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(IBM<S2SV_blank>LZ77)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 97 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(WavPack)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 98 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(PPMd)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; default : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(unknown)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; } if ( PHAR_GET_16 ( zipentry . comment_len ) ) { if ( PHAR_GET_16 ( zipentry . comment_len ) != php_stream_read ( fp , buf , PHAR_GET_16 ( zipentry . comment_len ) ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>file<S2SV_blank>comment,<S2SV_blank>truncated\" ) ; } p = buf ; entry . metadata_len = PHAR_GET_16 ( zipentry . comment_len ) ; if ( phar_parse_metadata ( & p , & ( entry . metadata ) , PHAR_GET_16 ( zipentry . comment_len ) ) == FAILURE ) { entry . metadata_len = 0 ; ZVAL_NEW_STR ( & entry . metadata , zend_string_init ( buf , PHAR_GET_16 ( zipentry . comment_len ) , entry . is_persistent ) ) ; } } else { ZVAL_UNDEF ( & entry . metadata ) ; } if ( ! actual_alias && entry . filename_len == sizeof ( \".phar/alias.txt\" ) - 1 && ! strncmp ( entry . filename , \".phar/alias.txt\" , sizeof ( \".phar/alias.txt\" ) - 1 ) ) { php_stream_filter * filter ; zend_off_t saveloc ; phar_zip_file_header local ; saveloc = php_stream_tell ( fp ) ; php_stream_seek ( fp , PHAR_GET_32 ( zipentry . offset ) , SEEK_SET ) ; if ( sizeof ( local ) != php_stream_read ( fp , ( char * ) & local , sizeof ( local ) ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"phar<S2SV_blank>error:<S2SV_blank>internal<S2SV_blank>corruption<S2SV_blank>of<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>(cannot<S2SV_blank>read<S2SV_blank>local<S2SV_blank>file<S2SV_blank>header<S2SV_blank>for<S2SV_blank>alias)\" ) ; } if ( entry . filename_len != PHAR_GET_16 ( local . filename_len ) || entry . crc32 != PHAR_GET_32 ( local . crc32 ) || entry . uncompressed_filesize != PHAR_GET_32 ( local . uncompsize ) || entry . compressed_filesize != PHAR_GET_32 ( local . compsize ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"phar<S2SV_blank>error:<S2SV_blank>internal<S2SV_blank>corruption<S2SV_blank>of<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>(local<S2SV_blank>header<S2SV_blank>of<S2SV_blank>alias<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>central<S2SV_blank>directory)\" ) ; } entry . offset = entry . offset_abs = sizeof ( local ) + entry . header_offset + PHAR_GET_16 ( local . filename_len ) + PHAR_GET_16 ( local . extra_len ) ; php_stream_seek ( fp , entry . offset , SEEK_SET ) ; fp -> writepos = 0 ; fp -> readpos = 0 ; php_stream_seek ( fp , entry . offset , SEEK_SET ) ; fp -> writepos = 0 ; fp -> readpos = 0 ; mydata -> alias_len = entry . uncompressed_filesize ; if ( entry . flags & PHAR_ENT_COMPRESSED_GZ ) { filter = php_stream_filter_create ( \"zlib.inflate\" , NULL , php_stream_is_persistent ( fp ) ) ; if ( ! filter ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>decompress<S2SV_blank>alias,<S2SV_blank>zlib<S2SV_blank>filter<S2SV_blank>creation<S2SV_blank>failed\" ) ; } php_stream_filter_append ( & fp -> readfilters , filter ) ; { zend_string * str = php_stream_copy_to_mem ( fp , entry . uncompressed_filesize , 0 ) ; if ( str ) { entry . uncompressed_filesize = ZSTR_LEN ( str ) ; actual_alias = estrndup ( ZSTR_VAL ( str ) , ZSTR_LEN ( str ) ) ; zend_string_release ( str ) ; } else { actual_alias = NULL ; entry . uncompressed_filesize = 0 ; } } if ( ! entry . uncompressed_filesize || ! actual_alias ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>alias,<S2SV_blank>truncated\" ) ; } php_stream_filter_flush ( filter , 1 ) ; php_stream_filter_remove ( filter , 1 ) ; } else if ( entry . flags & PHAR_ENT_COMPRESSED_BZ2 ) { filter = php_stream_filter_create ( \"bzip2.decompress\" , NULL , php_stream_is_persistent ( fp ) ) ; if ( ! filter ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>alias,<S2SV_blank>bzip2<S2SV_blank>filter<S2SV_blank>creation<S2SV_blank>failed\" ) ; } php_stream_filter_append ( & fp -> readfilters , filter ) ; { zend_string * str = php_stream_copy_to_mem ( fp , entry . uncompressed_filesize , 0 ) ; if ( str ) { entry . uncompressed_filesize = ZSTR_LEN ( str ) ; actual_alias = estrndup ( ZSTR_VAL ( str ) , ZSTR_LEN ( str ) ) ; zend_string_release ( str ) ; } else { actual_alias = NULL ; entry . uncompressed_filesize = 0 ; } } if ( ! entry . uncompressed_filesize || ! actual_alias ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>alias,<S2SV_blank>truncated\" ) ; } php_stream_filter_flush ( filter , 1 ) ; php_stream_filter_remove ( filter , 1 ) ; } else { { zend_string * str = php_stream_copy_to_mem ( fp , entry . uncompressed_filesize , 0 ) ; if ( str ) { entry . uncompressed_filesize = ZSTR_LEN ( str ) ; actual_alias = estrndup ( ZSTR_VAL ( str ) , ZSTR_LEN ( str ) ) ; zend_string_release ( str ) ; } else { actual_alias = NULL ; entry . uncompressed_filesize = 0 ; } } if ( ! entry . uncompressed_filesize || ! actual_alias ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>alias,<S2SV_blank>truncated\" ) ; } } php_stream_seek ( fp , saveloc , SEEK_SET ) ; } phar_set_inode ( & entry ) ; zend_hash_str_add_mem ( & mydata -> manifest , entry . filename , entry . filename_len , ( void * ) & entry , sizeof ( phar_entry_info ) ) ; } mydata -> fp = fp ; if ( zend_hash_str_exists ( & ( mydata -> manifest ) , \".phar/stub.php\" , sizeof ( \".phar/stub.php\" ) - 1 ) ) { mydata -> is_data = 0 ; } else { mydata -> is_data = 1 ; } zend_hash_str_add_ptr ( & ( PHAR_G ( phar_fname_map ) ) , mydata -> fname , fname_len , mydata ) ; if ( actual_alias ) { phar_archive_data * fd_ptr ; if ( ! phar_validate_alias ( actual_alias , mydata -> alias_len ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>invalid<S2SV_blank>alias<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , actual_alias , fname ) ; } efree ( actual_alias ) ; zend_hash_str_del ( & ( PHAR_G ( phar_fname_map ) ) , mydata -> fname , fname_len ) ; return FAILURE ; } mydata -> is_temporary_alias = 0 ; if ( NULL != ( fd_ptr = zend_hash_str_find_ptr ( & ( PHAR_G ( phar_alias_map ) ) , actual_alias , mydata -> alias_len ) ) ) { if ( SUCCESS != phar_free_alias ( fd_ptr , actual_alias , mydata -> alias_len ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>add<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>with<S2SV_blank>implicit<S2SV_blank>alias,<S2SV_blank>alias<S2SV_blank>is<S2SV_blank>already<S2SV_blank>in<S2SV_blank>use\" , fname ) ; } efree ( actual_alias ) ; zend_hash_str_del ( & ( PHAR_G ( phar_fname_map ) ) , mydata -> fname , fname_len ) ; return FAILURE ; } } mydata -> alias = entry . is_persistent ? pestrndup ( actual_alias , mydata -> alias_len , 1 ) : actual_alias ; if ( entry . is_persistent ) { efree ( actual_alias ) ; } zend_hash_str_add_ptr ( & ( PHAR_G ( phar_alias_map ) ) , actual_alias , mydata -> alias_len , mydata ) ; } else { phar_archive_data * fd_ptr ; if ( alias_len ) { if ( NULL != ( fd_ptr = zend_hash_str_find_ptr ( & ( PHAR_G ( phar_alias_map ) ) , alias , alias_len ) ) ) { if ( SUCCESS != phar_free_alias ( fd_ptr , alias , alias_len ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>add<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>with<S2SV_blank>explicit<S2SV_blank>alias,<S2SV_blank>alias<S2SV_blank>is<S2SV_blank>already<S2SV_blank>in<S2SV_blank>use\" , fname ) ; } zend_hash_str_del ( & ( PHAR_G ( phar_fname_map ) ) , mydata -> fname , fname_len ) ; return FAILURE ; } } zend_hash_str_add_ptr ( & ( PHAR_G ( phar_alias_map ) ) , actual_alias , mydata -> alias_len , mydata ) ; mydata -> alias = pestrndup ( alias , alias_len , mydata -> is_persistent ) ; mydata -> alias_len = alias_len ; } else { mydata -> alias = pestrndup ( mydata -> fname , fname_len , mydata -> is_persistent ) ; mydata -> alias_len = fname_len ; } mydata -> is_temporary_alias = 1 ; } if ( pphar ) { * pphar = mydata ; } return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> entry . uncompressed_filesize || read <= 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15126\n\n```\nCWE-416 static ssize_t userfaultfd_ctx_read ( struct userfaultfd_ctx * ctx , int no_wait , struct uffd_msg * msg ) { ssize_t ret ; DECLARE_WAITQUEUE ( wait , current ) ; struct userfaultfd_wait_queue * uwq ; LIST_HEAD ( fork_event ) ; struct userfaultfd_ctx * fork_nctx = NULL ; spin_lock ( & ctx -> fd_wqh . lock ) ; __add_wait_queue ( & ctx -> fd_wqh , & wait ) ; for ( ; ; ) { set_current_state ( TASK_INTERRUPTIBLE ) ; spin_lock ( & ctx -> fault_pending_wqh . lock ) ; uwq = find_userfault ( ctx ) ; if ( uwq ) { write_seqcount_begin ( & ctx -> refile_seq ) ; list_del ( & uwq -> wq . entry ) ; __add_wait_queue ( & ctx -> fault_wqh , & uwq -> wq ) ; write_seqcount_end ( & ctx -> refile_seq ) ; * msg = uwq -> msg ; spin_unlock ( & ctx -> fault_pending_wqh . lock ) ; ret = 0 ; break ; } spin_unlock ( & ctx -> fault_pending_wqh . lock ) ; spin_lock ( & ctx -> event_wqh . lock ) ; uwq = find_userfault_evt ( ctx ) ; if ( uwq ) { * msg = uwq -> msg ; if ( uwq -> msg . event == UFFD_EVENT_FORK ) { fork_nctx = ( struct userfaultfd_ctx * ) ( unsigned long ) uwq -> msg . arg . reserved . reserved1 ; list_move ( & uwq -> wq . entry , & fork_event ) ; <S2SV_StartBug> spin_unlock ( & ctx -> event_wqh . lock ) ; <S2SV_EndBug> ret = 0 ; break ; } userfaultfd_event_complete ( ctx , uwq ) ; spin_unlock ( & ctx -> event_wqh . lock ) ; ret = 0 ; break ; } spin_unlock ( & ctx -> event_wqh . lock ) ; if ( signal_pending ( current ) ) { ret = - ERESTARTSYS ; break ; } if ( no_wait ) { ret = - EAGAIN ; break ; } spin_unlock ( & ctx -> fd_wqh . lock ) ; schedule ( ) ; spin_lock ( & ctx -> fd_wqh . lock ) ; } __remove_wait_queue ( & ctx -> fd_wqh , & wait ) ; __set_current_state ( TASK_RUNNING ) ; spin_unlock ( & ctx -> fd_wqh . lock ) ; if ( ! ret && msg -> event == UFFD_EVENT_FORK ) { ret = resolve_userfault_fork ( ctx , fork_nctx , msg ) ; <S2SV_StartBug> if ( ! ret ) { <S2SV_EndBug> spin_lock ( & ctx -> event_wqh . lock ) ; if ( ! list_empty ( & fork_event ) ) { <S2SV_StartBug> uwq = list_first_entry ( & fork_event , <S2SV_EndBug> typeof ( * uwq ) , wq . entry ) ; list_del ( & uwq -> wq . entry ) ; __add_wait_queue ( & ctx -> event_wqh , & uwq -> wq ) ; <S2SV_StartBug> userfaultfd_event_complete ( ctx , uwq ) ; <S2SV_EndBug> } <S2SV_StartBug> spin_unlock ( & ctx -> event_wqh . lock ) ; <S2SV_EndBug> } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fork_event ) ; userfaultfd_ctx_get ( fork_nctx ) ; <S2SV_ModStart> msg ) ; <S2SV_ModEnd> spin_lock ( & <S2SV_ModStart> ) ) { userfaultfd_ctx_put ( fork_nctx ) ; <S2SV_ModStart> wq ) ; if ( likely ( ! ret ) ) <S2SV_ModStart> ) ; } else { if ( ret ) userfaultfd_ctx_put ( fork_nctx ) ; } spin_unlock ( & ctx -> event_wqh . lock ) ; <S2SV_ModEnd> } return ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_subtract_plane ( MACROBLOCK * x , BLOCK_SIZE bsize , int plane ) { struct macroblock_plane * const p = & x -> plane [ plane ] ; const struct macroblockd_plane * const pd = & x -> e_mbd . plane [ plane ] ; const BLOCK_SIZE plane_bsize = get_plane_block_size ( bsize , pd ) ; const int bw = 4 * num_4x4_blocks_wide_lookup [ plane_bsize ] ; const int bh = 4 * num_4x4_blocks_high_lookup [ plane_bsize ] ; <S2SV_StartBug> vp9_subtract_block ( bh , bw , p -> src_diff , bw , p -> src . buf , p -> src . stride , <S2SV_EndBug> pd -> dst . buf , pd -> dst . stride ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> plane_bsize ] ; # if CONFIG_VP9_HIGHBITDEPTH if ( x -> e_mbd . cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { vpx_highbd_subtract_block ( bh , bw , p -> src_diff , bw , p -> src . buf , p -> src . stride , pd -> dst . buf , pd -> dst . stride , x -> e_mbd . bd ) ; return ; } # endif vpx_subtract_block <S2SV_ModEnd> ( bh ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7875\n\n```\nCWE-787 char * enl_ipc_get ( const char * msg_data ) { static char * message = NULL ; <S2SV_StartBug> static unsigned short len = 0 ; <S2SV_EndBug> char buff [ 13 ] , * ret_msg = NULL ; register unsigned char i ; unsigned char blen ; if ( msg_data == IPC_TIMEOUT ) { return ( IPC_TIMEOUT ) ; } for ( i = 0 ; i < 12 ; i ++ ) { buff [ i ] = msg_data [ i ] ; } buff [ 12 ] = 0 ; blen = strlen ( buff ) ; if ( message != NULL ) { len += blen ; message = ( char * ) erealloc ( message , len + 1 ) ; strcat ( message , buff ) ; } else { len = blen ; message = ( char * ) emalloc ( len + 1 ) ; strcpy ( message , buff ) ; } if ( blen < 12 ) { ret_msg = message ; message = NULL ; D ( ( \"Received<S2SV_blank>complete<S2SV_blank>reply:<S2SV_blank><S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , ret_msg ) ) ; } return ( ret_msg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; static size_t <S2SV_ModEnd> len = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2486\n\n```\nCWE-264 static NPError g_NPN_GetValue ( NPP instance , NPNVariable variable , void * value ) { D ( bug ( \"NPN_GetValue<S2SV_blank>instance=%p,<S2SV_blank>variable=%d<S2SV_blank>[%s]\\\\n\" , instance , variable , string_of_NPNVariable ( variable ) ) ) ; if ( ! thread_check ( ) ) { npw_printf ( \"WARNING:<S2SV_blank>NPN_GetValue<S2SV_blank>not<S2SV_blank>called<S2SV_blank>from<S2SV_blank>the<S2SV_blank>main<S2SV_blank>thread\\\\n\" ) ; return NPERR_INVALID_INSTANCE_ERROR ; } PluginInstance * plugin = NULL ; if ( instance ) plugin = PLUGIN_INSTANCE ( instance ) ; switch ( variable ) { case NPNVxDisplay : * ( void * * ) value = x_display ; break ; case NPNVxtAppContext : * ( void * * ) value = XtDisplayToApplicationContext ( x_display ) ; break ; case NPNVToolkit : * ( NPNToolkitType * ) value = NPW_TOOLKIT ; break ; # if USE_XPCOM case NPNVserviceManager : { nsIServiceManager * sm ; int ret = NS_GetServiceManager ( & sm ) ; if ( NS_FAILED ( ret ) ) { npw_printf ( \"WARNING:<S2SV_blank>NS_GetServiceManager<S2SV_blank>failed\\\\n\" ) ; return NPERR_GENERIC_ERROR ; } * ( nsIServiceManager * * ) value = sm ; break ; } case NPNVDOMWindow : case NPNVDOMElement : npw_printf ( \"WARNING:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>NPN_GetValue()\\\\n\" , string_of_NPNVariable ( variable ) ) ; return NPERR_INVALID_PARAM ; # endif case NPNVnetscapeWindow : if ( plugin == NULL ) { npw_printf ( \"ERROR:<S2SV_blank>NPNVnetscapeWindow<S2SV_blank>requires<S2SV_blank>a<S2SV_blank>non<S2SV_blank>NULL<S2SV_blank>instance\\\\n\" ) ; return NPERR_INVALID_INSTANCE_ERROR ; } if ( plugin -> browser_toplevel == NULL ) { GdkNativeWindow netscape_xid = None ; NPError error = g_NPN_GetValue_real ( instance , variable , & netscape_xid ) ; if ( error != NPERR_NO_ERROR ) return error ; if ( netscape_xid == None ) return NPERR_GENERIC_ERROR ; plugin -> browser_toplevel = gdk_window_foreign_new ( netscape_xid ) ; if ( plugin -> browser_toplevel == NULL ) return NPERR_GENERIC_ERROR ; } * ( ( GdkNativeWindow * ) value ) = GDK_WINDOW_XWINDOW ( plugin -> browser_toplevel ) ; break ; # if ALLOW_WINDOWLESS_PLUGINS case NPNVSupportsWindowless : # endif case NPNVSupportsXEmbedBool : case NPNVWindowNPObject : case NPNVPluginElementNPObject : <S2SV_StartBug> return g_NPN_GetValue_real ( instance , variable , value ) ; <S2SV_EndBug> default : switch ( variable & 0xff ) { case 13 : if ( NPW_TOOLKIT == NPNVGtk2 ) { * ( NPNToolkitType * ) value = NPW_TOOLKIT ; return NPERR_NO_ERROR ; } break ; } D ( bug ( \"WARNING:<S2SV_blank>unhandled<S2SV_blank>variable<S2SV_blank>%d<S2SV_blank>(%s)<S2SV_blank>in<S2SV_blank>NPN_GetValue()\\\\n\" , variable , string_of_NPNVariable ( variable ) ) ) ; return NPERR_INVALID_PARAM ; } return NPERR_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case NPNVPluginElementNPObject : case NPNVprivateModeBool : case NPNVsupportsAdvancedKeyHandling :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1465\n\n```\nCWE-17 static int __mkroute_input ( struct sk_buff * skb , const struct fib_result * res , struct in_device * in_dev , __be32 daddr , __be32 saddr , u32 tos ) { struct fib_nh_exception * fnhe ; struct rtable * rth ; int err ; struct in_device * out_dev ; unsigned int flags = 0 ; bool do_cache ; u32 itag = 0 ; out_dev = __in_dev_get_rcu ( FIB_RES_DEV ( * res ) ) ; if ( out_dev == NULL ) { net_crit_ratelimited ( \"Bug<S2SV_blank>in<S2SV_blank>ip_route_input_slow().<S2SV_blank>Please<S2SV_blank>report.\\\\n\" ) ; return - EINVAL ; } err = fib_validate_source ( skb , saddr , daddr , tos , FIB_RES_OIF ( * res ) , in_dev -> dev , in_dev , & itag ) ; if ( err < 0 ) { ip_handle_martian_source ( in_dev -> dev , in_dev , skb , daddr , saddr ) ; goto cleanup ; } do_cache = res -> fi && ! itag ; if ( out_dev == in_dev && err && IN_DEV_TX_REDIRECTS ( out_dev ) && <S2SV_StartBug> ( IN_DEV_SHARED_MEDIA ( out_dev ) || <S2SV_EndBug> <S2SV_StartBug> inet_addr_onlink ( out_dev , saddr , FIB_RES_GW ( * res ) ) ) ) { <S2SV_EndBug> flags |= RTCF_DOREDIRECT ; do_cache = false ; } if ( skb -> protocol != htons ( ETH_P_IP ) ) { if ( out_dev == in_dev && IN_DEV_PROXY_ARP_PVLAN ( in_dev ) == 0 ) { err = - EINVAL ; goto cleanup ; } } fnhe = find_exception ( & FIB_RES_NH ( * res ) , daddr ) ; if ( do_cache ) { if ( fnhe != NULL ) rth = rcu_dereference ( fnhe -> fnhe_rth_input ) ; else rth = rcu_dereference ( FIB_RES_NH ( * res ) . nh_rth_input ) ; if ( rt_cache_valid ( rth ) ) { skb_dst_set_noref ( skb , & rth -> dst ) ; goto out ; } } rth = rt_dst_alloc ( out_dev -> dev , IN_DEV_CONF_GET ( in_dev , NOPOLICY ) , IN_DEV_CONF_GET ( out_dev , NOXFRM ) , do_cache ) ; if ( ! rth ) { err = - ENOBUFS ; goto cleanup ; } rth -> rt_genid = rt_genid_ipv4 ( dev_net ( rth -> dst . dev ) ) ; rth -> rt_flags = flags ; rth -> rt_type = res -> type ; rth -> rt_is_input = 1 ; rth -> rt_iif = 0 ; rth -> rt_pmtu = 0 ; rth -> rt_gateway = 0 ; rth -> rt_uses_gateway = 0 ; INIT_LIST_HEAD ( & rth -> rt_uncached ) ; RT_CACHE_STAT_INC ( in_slow_tot ) ; rth -> dst . input = ip_forward ; rth -> dst . output = ip_output ; rt_set_nexthop ( rth , daddr , res , fnhe , res -> fi , res -> type , itag ) ; skb_dst_set ( skb , & rth -> dst ) ; out : err = 0 ; cleanup : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_dev ) && skb -> protocol == htons ( ETH_P_IP ) && <S2SV_ModStart> ) ) ) IPCB ( skb ) -> flags |= IPSKB_DOREDIRECT ; <S2SV_ModEnd> if ( skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_optimize_mbuv ( MACROBLOCK * x ) { int b ; ENTROPY_CONTEXT_PLANES t_above , t_left ; ENTROPY_CONTEXT * ta ; ENTROPY_CONTEXT * tl ; if ( ! x -> e_mbd . above_context ) return ; if ( ! x -> e_mbd . left_context ) return ; <S2SV_StartBug> vpx_memcpy ( & t_above , x -> e_mbd . above_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & t_left , x -> e_mbd . left_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> ta = ( ENTROPY_CONTEXT * ) & t_above ; tl = ( ENTROPY_CONTEXT * ) & t_left ; for ( b = 16 ; b < 24 ; b ++ ) { optimize_b ( x , b , PLANE_TYPE_UV , ta + vp8_block2above [ b ] , tl + vp8_block2left [ b ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; memcpy <S2SV_ModEnd> ( & t_above <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & t_left\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8690\n\n```\nCWE-476 jas_image_t * bmp_decode ( jas_stream_t * in , char * optstr ) { jas_image_t * image ; bmp_hdr_t hdr ; bmp_info_t * info ; uint_fast16_t cmptno ; jas_image_cmptparm_t cmptparms [ 3 ] ; jas_image_cmptparm_t * cmptparm ; uint_fast16_t numcmpts ; long n ; if ( optstr ) { jas_eprintf ( \"warning:<S2SV_blank>ignoring<S2SV_blank>BMP<S2SV_blank>decoder<S2SV_blank>options\\\\n\" ) ; } jas_eprintf ( \"THE<S2SV_blank>BMP<S2SV_blank>FORMAT<S2SV_blank>IS<S2SV_blank>NOT<S2SV_blank>FULLY<S2SV_blank>SUPPORTED!\\\\n\" \"THAT<S2SV_blank>IS,<S2SV_blank>THE<S2SV_blank>JASPER<S2SV_blank>SOFTWARE<S2SV_blank>CANNOT<S2SV_blank>DECODE<S2SV_blank>ALL<S2SV_blank>TYPES<S2SV_blank>OF<S2SV_blank>BMP<S2SV_blank>DATA.\\\\n\" \"IF<S2SV_blank>YOU<S2SV_blank>HAVE<S2SV_blank>ANY<S2SV_blank>PROBLEMS,<S2SV_blank>PLEASE<S2SV_blank>TRY<S2SV_blank>CONVERTING<S2SV_blank>YOUR<S2SV_blank>IMAGE<S2SV_blank>DATA\\\\n\" \"TO<S2SV_blank>THE<S2SV_blank>PNM<S2SV_blank>FORMAT,<S2SV_blank>AND<S2SV_blank>USING<S2SV_blank>THIS<S2SV_blank>FORMAT<S2SV_blank>INSTEAD.\\\\n\" ) ; if ( bmp_gethdr ( in , & hdr ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>header\\\\n\" ) ; return 0 ; } <S2SV_StartBug> if ( ! ( info = bmp_getinfo ( in ) ) ) { <S2SV_EndBug> jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>info\\\\n\" ) ; return 0 ; <S2SV_StartBug> } <S2SV_EndBug> if ( ! bmp_issupported ( & hdr , info ) ) { jas_eprintf ( \"error:<S2SV_blank>unsupported<S2SV_blank>BMP<S2SV_blank>encoding\\\\n\" ) ; bmp_info_destroy ( info ) ; return 0 ; } if ( ( n = hdr . off - ( BMP_HDRLEN + BMP_INFOLEN + BMP_PALLEN ( info ) ) ) < 0 ) { jas_eprintf ( \"error:<S2SV_blank>possibly<S2SV_blank>bad<S2SV_blank>bitmap<S2SV_blank>offset?\\\\n\" ) ; return 0 ; } if ( n > 0 ) { jas_eprintf ( \"skipping<S2SV_blank>unknown<S2SV_blank>data<S2SV_blank>in<S2SV_blank>BMP<S2SV_blank>file\\\\n\" ) ; if ( bmp_gobble ( in , n ) ) { bmp_info_destroy ( info ) ; return 0 ; } } numcmpts = bmp_numcmpts ( info ) ; for ( cmptno = 0 , cmptparm = cmptparms ; cmptno < numcmpts ; ++ cmptno , ++ cmptparm ) { cmptparm -> tlx = 0 ; cmptparm -> tly = 0 ; cmptparm -> hstep = 1 ; cmptparm -> vstep = 1 ; cmptparm -> width = info -> width ; cmptparm -> height = info -> height ; cmptparm -> prec = 8 ; cmptparm -> sgnd = false ; } if ( ! ( image = jas_image_create ( numcmpts , cmptparms , JAS_CLRSPC_UNKNOWN ) ) ) { bmp_info_destroy ( info ) ; return 0 ; } if ( numcmpts == 3 ) { jas_image_setclrspc ( image , JAS_CLRSPC_SRGB ) ; jas_image_setcmpttype ( image , 0 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_R ) ) ; jas_image_setcmpttype ( image , 1 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_G ) ) ; jas_image_setcmpttype ( image , 2 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_B ) ) ; } else { jas_image_setclrspc ( image , JAS_CLRSPC_SGRAY ) ; jas_image_setcmpttype ( image , 0 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_GRAY_Y ) ) ; } if ( bmp_getdata ( in , info , image ) ) { bmp_info_destroy ( info ) ; jas_image_destroy ( image ) ; return 0 ; } bmp_info_destroy ( info ) ; return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } JAS_DBGLOG ( 1 , ( \"BMP<S2SV_blank>header:<S2SV_blank>magic<S2SV_blank>0x%x;<S2SV_blank>siz<S2SV_blank>%d;<S2SV_blank>res1<S2SV_blank>%d;<S2SV_blank>res2<S2SV_blank>%d;<S2SV_blank>off<S2SV_blank>%d\\\\n\" , hdr . magic , hdr . siz , hdr . reserved1 , hdr . reserved2 , hdr . off ) ) ; <S2SV_ModStart> 0 ; } JAS_DBGLOG ( 1 , ( \"BMP<S2SV_blank>information:<S2SV_blank>len<S2SV_blank>%d;<S2SV_blank>width<S2SV_blank>%d;<S2SV_blank>height<S2SV_blank>%d;<S2SV_blank>numplanes<S2SV_blank>%d;<S2SV_blank>\" \"depth<S2SV_blank>%d;<S2SV_blank>enctype<S2SV_blank>%d;<S2SV_blank>siz<S2SV_blank>%d;<S2SV_blank>hres<S2SV_blank>%d;<S2SV_blank>vres<S2SV_blank>%d;<S2SV_blank>numcolors<S2SV_blank>%d;<S2SV_blank>\" \"mincolors<S2SV_blank>%d\\\\n\" , info -> len , info -> width , info -> height , info -> numplanes , info -> depth , info -> enctype , info -> siz , info -> hres , info -> vres , info -> numcolors , info -> mincolors ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1585\n\n```\nCWE-264 static struct cifsSesInfo * <S2SV_StartBug> cifs_find_smb_ses ( struct TCP_Server_Info * server , char * username ) <S2SV_EndBug> { struct list_head * tmp ; struct cifsSesInfo * ses ; write_lock ( & cifs_tcp_ses_lock ) ; <S2SV_StartBug> list_for_each ( tmp , & server -> smb_ses_list ) { <S2SV_EndBug> ses = list_entry ( tmp , struct cifsSesInfo , smb_ses_list ) ; <S2SV_StartBug> if ( strncmp ( ses -> userName , username , MAX_USERNAME_SIZE ) ) <S2SV_EndBug> <S2SV_StartBug> continue ; <S2SV_EndBug> ++ ses -> ses_count ; write_unlock ( & cifs_tcp_ses_lock ) ; return ses ; } write_unlock ( & cifs_tcp_ses_lock ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * server , struct smb_vol * vol ) { <S2SV_ModEnd> struct cifsSesInfo * <S2SV_ModStart> cifs_tcp_ses_lock ) ; list_for_each_entry ( ses <S2SV_ModEnd> , & server <S2SV_ModStart> server -> smb_ses_list , smb_ses_list ) { switch ( server -> secType ) { case Kerberos : if ( vol -> linux_uid != ses -> linux_uid ) continue ; break ; default : <S2SV_ModEnd> if ( strncmp <S2SV_ModStart> -> userName , vol -> <S2SV_ModStart> ) continue ; if ( strlen ( vol -> username ) != 0 && strncmp ( ses -> password , vol -> password , MAX_PASSWORD_SIZE ) ) continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 int x86_emulate_insn ( struct x86_emulate_ctxt * ctxt ) { const struct x86_emulate_ops * ops = ctxt -> ops ; int rc = X86EMUL_CONTINUE ; int saved_dst_type = ctxt -> dst . type ; ctxt -> mem_read . pos = 0 ; if ( ctxt -> lock_prefix && ( ! ( ctxt -> d & Lock ) || ctxt -> dst . type != OP_MEM ) ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( ( ctxt -> d & SrcMask ) == SrcMemFAddr && ctxt -> src . type != OP_MEM ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( unlikely ( ctxt -> d & ( No64 | Undefined | Sse | Mmx | Intercept | CheckPerm | Priv | Prot | String ) ) ) { if ( ( ctxt -> mode == X86EMUL_MODE_PROT64 && ( ctxt -> d & No64 ) ) || ( ctxt -> d & Undefined ) ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( ( ( ctxt -> d & ( Sse | Mmx ) ) && ( ( ops -> get_cr ( ctxt , 0 ) & X86_CR0_EM ) ) ) || ( ( ctxt -> d & Sse ) && ! ( ops -> get_cr ( ctxt , 4 ) & X86_CR4_OSFXSR ) ) ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( ( ctxt -> d & ( Sse | Mmx ) ) && ( ops -> get_cr ( ctxt , 0 ) & X86_CR0_TS ) ) { rc = emulate_nm ( ctxt ) ; goto done ; } if ( ctxt -> d & Mmx ) { rc = flush_pending_x87_faults ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; fetch_possible_mmx_operand ( ctxt , & ctxt -> src ) ; fetch_possible_mmx_operand ( ctxt , & ctxt -> src2 ) ; if ( ! ( ctxt -> d & Mov ) ) fetch_possible_mmx_operand ( ctxt , & ctxt -> dst ) ; } if ( unlikely ( ctxt -> guest_mode ) && ( ctxt -> d & Intercept ) ) { rc = emulator_check_intercept ( ctxt , ctxt -> intercept , X86_ICPT_PRE_EXCEPT ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ( ctxt -> d & Priv ) && ops -> cpl ( ctxt ) ) { if ( ctxt -> d & PrivUD ) rc = emulate_ud ( ctxt ) ; else rc = emulate_gp ( ctxt , 0 ) ; goto done ; } if ( ( ctxt -> d & Prot ) && ctxt -> mode < X86EMUL_MODE_PROT16 ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( ctxt -> d & CheckPerm ) { rc = ctxt -> check_perm ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( unlikely ( ctxt -> guest_mode ) && ( ctxt -> d & Intercept ) ) { rc = emulator_check_intercept ( ctxt , ctxt -> intercept , X86_ICPT_POST_EXCEPT ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ctxt -> rep_prefix && ( ctxt -> d & String ) ) { if ( address_mask ( ctxt , reg_read ( ctxt , VCPU_REGS_RCX ) ) == 0 ) { ctxt -> eip = ctxt -> _eip ; ctxt -> eflags &= ~ EFLG_RF ; goto done ; } } } if ( ( ctxt -> src . type == OP_MEM ) && ! ( ctxt -> d & NoAccess ) ) { rc = segmented_read ( ctxt , ctxt -> src . addr . mem , ctxt -> src . valptr , ctxt -> src . bytes ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; ctxt -> src . orig_val64 = ctxt -> src . val64 ; } if ( ctxt -> src2 . type == OP_MEM ) { rc = segmented_read ( ctxt , ctxt -> src2 . addr . mem , & ctxt -> src2 . val , ctxt -> src2 . bytes ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ( ctxt -> d & DstMask ) == ImplicitOps ) goto special_insn ; if ( ( ctxt -> dst . type == OP_MEM ) && ! ( ctxt -> d & Mov ) ) { rc = segmented_read ( ctxt , ctxt -> dst . addr . mem , & ctxt -> dst . val , ctxt -> dst . bytes ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } ctxt -> dst . orig_val = ctxt -> dst . val ; special_insn : if ( unlikely ( ctxt -> guest_mode ) && ( ctxt -> d & Intercept ) ) { rc = emulator_check_intercept ( ctxt , ctxt -> intercept , X86_ICPT_POST_MEMACCESS ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ctxt -> rep_prefix && ( ctxt -> d & String ) ) ctxt -> eflags |= EFLG_RF ; else ctxt -> eflags &= ~ EFLG_RF ; if ( ctxt -> execute ) { if ( ctxt -> d & Fastop ) { void ( * fop ) ( struct fastop * ) = ( void * ) ctxt -> execute ; rc = fastop ( ctxt , fop ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; goto writeback ; } rc = ctxt -> execute ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; goto writeback ; } if ( ctxt -> opcode_len == 2 ) goto twobyte_insn ; else if ( ctxt -> opcode_len == 3 ) goto threebyte_insn ; switch ( ctxt -> b ) { case 0x63 : if ( ctxt -> mode != X86EMUL_MODE_PROT64 ) goto cannot_emulate ; ctxt -> dst . val = ( s32 ) ctxt -> src . val ; break ; case 0x70 ... 0x7f : if ( test_cc ( ctxt -> b , ctxt -> eflags ) ) <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> break ; case 0x8d : ctxt -> dst . val = ctxt -> src . addr . mem . ea ; break ; case 0x90 ... 0x97 : if ( ctxt -> dst . addr . reg == reg_rmw ( ctxt , VCPU_REGS_RAX ) ) ctxt -> dst . type = OP_NONE ; else rc = em_xchg ( ctxt ) ; break ; case 0x98 : switch ( ctxt -> op_bytes ) { case 2 : ctxt -> dst . val = ( s8 ) ctxt -> dst . val ; break ; case 4 : ctxt -> dst . val = ( s16 ) ctxt -> dst . val ; break ; case 8 : ctxt -> dst . val = ( s32 ) ctxt -> dst . val ; break ; } break ; case 0xcc : rc = emulate_int ( ctxt , 3 ) ; break ; case 0xcd : rc = emulate_int ( ctxt , ctxt -> src . val ) ; break ; case 0xce : if ( ctxt -> eflags & EFLG_OF ) rc = emulate_int ( ctxt , 4 ) ; break ; case 0xe9 : case 0xeb : <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> ctxt -> dst . type = OP_NONE ; break ; case 0xf4 : ctxt -> ops -> halt ( ctxt ) ; break ; case 0xf5 : ctxt -> eflags ^= EFLG_CF ; break ; case 0xf8 : ctxt -> eflags &= ~ EFLG_CF ; break ; case 0xf9 : ctxt -> eflags |= EFLG_CF ; break ; case 0xfc : ctxt -> eflags &= ~ EFLG_DF ; break ; case 0xfd : ctxt -> eflags |= EFLG_DF ; break ; default : goto cannot_emulate ; } if ( rc != X86EMUL_CONTINUE ) goto done ; writeback : if ( ctxt -> d & SrcWrite ) { BUG_ON ( ctxt -> src . type == OP_MEM || ctxt -> src . type == OP_MEM_STR ) ; rc = writeback ( ctxt , & ctxt -> src ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ! ( ctxt -> d & NoWrite ) ) { rc = writeback ( ctxt , & ctxt -> dst ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } ctxt -> dst . type = saved_dst_type ; if ( ( ctxt -> d & SrcMask ) == SrcSI ) string_addr_inc ( ctxt , VCPU_REGS_RSI , & ctxt -> src ) ; if ( ( ctxt -> d & DstMask ) == DstDI ) string_addr_inc ( ctxt , VCPU_REGS_RDI , & ctxt -> dst ) ; if ( ctxt -> rep_prefix && ( ctxt -> d & String ) ) { unsigned int count ; struct read_cache * r = & ctxt -> io_read ; if ( ( ctxt -> d & SrcMask ) == SrcSI ) count = ctxt -> src . count ; else count = ctxt -> dst . count ; register_address_increment ( ctxt , reg_rmw ( ctxt , VCPU_REGS_RCX ) , - count ) ; if ( ! string_insn_completed ( ctxt ) ) { if ( ( r -> end != 0 || reg_read ( ctxt , VCPU_REGS_RCX ) & 0x3ff ) && ( r -> end == 0 || r -> end != r -> pos ) ) { ctxt -> mem_read . end = 0 ; writeback_registers ( ctxt ) ; return EMULATION_RESTART ; } goto done ; } ctxt -> eflags &= ~ EFLG_RF ; } ctxt -> eip = ctxt -> _eip ; done : if ( rc == X86EMUL_PROPAGATE_FAULT ) { WARN_ON ( ctxt -> exception . vector > 0x1f ) ; ctxt -> have_exception = true ; } if ( rc == X86EMUL_INTERCEPTED ) return EMULATION_INTERCEPTED ; if ( rc == X86EMUL_CONTINUE ) writeback_registers ( ctxt ) ; return ( rc == X86EMUL_UNHANDLEABLE ) ? EMULATION_FAILED : EMULATION_OK ; twobyte_insn : switch ( ctxt -> b ) { case 0x09 : ( ctxt -> ops -> wbinvd ) ( ctxt ) ; break ; case 0x08 : case 0x0d : case 0x18 : case 0x1f : break ; case 0x20 : ctxt -> dst . val = ops -> get_cr ( ctxt , ctxt -> modrm_reg ) ; break ; case 0x21 : ops -> get_dr ( ctxt , ctxt -> modrm_reg , & ctxt -> dst . val ) ; break ; case 0x40 ... 0x4f : if ( test_cc ( ctxt -> b , ctxt -> eflags ) ) ctxt -> dst . val = ctxt -> src . val ; else if ( ctxt -> mode != X86EMUL_MODE_PROT64 || ctxt -> op_bytes != 4 ) ctxt -> dst . type = OP_NONE ; break ; case 0x80 ... 0x8f : if ( test_cc ( ctxt -> b , ctxt -> eflags ) ) <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> break ; case 0x90 ... 0x9f : ctxt -> dst . val = test_cc ( ctxt -> b , ctxt -> eflags ) ; break ; case 0xae : break ; case 0xb6 ... 0xb7 : ctxt -> dst . bytes = ctxt -> op_bytes ; ctxt -> dst . val = ( ctxt -> src . bytes == 1 ) ? ( u8 ) ctxt -> src . val : ( u16 ) ctxt -> src . val ; break ; case 0xbe ... 0xbf : ctxt -> dst . bytes = ctxt -> op_bytes ; ctxt -> dst . val = ( ctxt -> src . bytes == 1 ) ? ( s8 ) ctxt -> src . val : ( s16 ) ctxt -> src . val ; break ; case 0xc3 : ctxt -> dst . bytes = ctxt -> op_bytes ; ctxt -> dst . val = ( ctxt -> op_bytes == 8 ) ? ( u64 ) ctxt -> src . val : ( u32 ) ctxt -> src . val ; break ; default : goto cannot_emulate ; } threebyte_insn : if ( rc != X86EMUL_CONTINUE ) goto done ; goto writeback ; cannot_emulate : return EMULATION_FAILED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> eflags ) ) rc = <S2SV_ModStart> case 0xeb : rc = <S2SV_ModStart> eflags ) ) rc =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7526\n\n```\nCWE-787 static void InsertRow ( unsigned char * p , ssize_t y , Image * image , int bpp ) { ExceptionInfo * exception ; int bit ; ssize_t x ; register PixelPacket * q ; IndexPacket index ; register IndexPacket * indexes ; exception = ( & image -> exception ) ; switch ( bpp ) { case 1 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( ( * p ) & ( 0x80 >> bit ) ? 0x01 : 0x00 ) ; SetPixelIndex ( indexes + x + bit , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( ssize_t ) ( image -> columns % 8 ) ; bit ++ ) { index = ( ( * p ) & ( 0x80 >> bit ) ? 0x01 : 0x00 ) ; SetPixelIndex ( indexes + x + bit , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; } p ++ ; } if ( ! SyncAuthenticPixels ( image , exception ) ) break ; break ; } case 2 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; <S2SV_StartBug> for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 4 ) <S2SV_EndBug> { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; index = ConstrainColormapIndex ( image , ( * p ) & 0x3 ) ; SetPixelIndex ( indexes + x + 1 , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; <S2SV_StartBug> p ++ ; <S2SV_EndBug> q ++ ; } if ( ( image -> columns % 4 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; <S2SV_StartBug> if ( ( image -> columns % 4 ) >= 1 ) <S2SV_EndBug> { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; <S2SV_StartBug> if ( ( image -> columns % 4 ) >= 2 ) <S2SV_EndBug> { index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; } } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; break ; } case 4 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x0f ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; q ++ ; index = ConstrainColormapIndex ( image , ( * p ) & 0x0f ) ; SetPixelIndex ( indexes + x + 1 , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; p ++ ; q ++ ; } if ( ( image -> columns % 2 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x0f ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; break ; } case 8 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { index = ConstrainColormapIndex ( image , * p ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } break ; case 24 : q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( * p ++ ) ) ; q ++ ; } if ( ! SyncAuthenticPixels ( image , exception ) ) break ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> columns - 3 <S2SV_ModEnd> ) ; x <S2SV_ModStart> index ) ; q ++ ; p <S2SV_ModEnd> ++ ; } <S2SV_ModStart> % 4 ) > <S2SV_ModEnd> 1 ) { <S2SV_ModStart> % 4 ) > <S2SV_ModEnd> 2 ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4387\n\n```\nCWE-119 static inline int ip6_ufo_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int hh_len , int fragheaderlen , int transhdrlen , int mtu , unsigned int flags , struct rt6_info * rt ) { struct sk_buff * skb ; int err ; if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) { <S2SV_StartBug> skb = sock_alloc_send_skb ( sk , <S2SV_EndBug> hh_len + fragheaderlen + transhdrlen + 20 , ( flags & MSG_DONTWAIT ) , & err ) ; if ( skb == NULL ) return err ; skb_reserve ( skb , hh_len ) ; skb_put ( skb , fragheaderlen + transhdrlen ) ; skb_reset_network_header ( skb ) ; skb -> transport_header = skb -> network_header + fragheaderlen ; skb -> protocol = htons ( ETH_P_IPV6 ) ; skb -> ip_summed = CHECKSUM_PARTIAL ; <S2SV_StartBug> skb -> csum = 0 ; <S2SV_EndBug> } err = skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) ; if ( ! err ) { struct frag_hdr fhdr ; skb_shinfo ( skb ) -> gso_size = ( mtu - fragheaderlen - sizeof ( struct frag_hdr ) ) & ~ 7 ; skb_shinfo ( skb ) -> gso_type = SKB_GSO_UDP ; ipv6_select_ident ( & fhdr , rt ) ; skb_shinfo ( skb ) -> ip6_frag_id = fhdr . identification ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } kfree_skb ( skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { struct frag_hdr fhdr ; <S2SV_ModStart> csum = 0 <S2SV_ModEnd> ; skb_shinfo ( <S2SV_ModStart> skb ) ; } return skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-36279\n\n```\nCWE-125 int main ( int argc , char * * argv ) { l_int32 w , h ; PIX * pixs , * pixg , * pixim , * pixgm , * pixmi , * pix1 , * pix2 ; PIX * pixmr , * pixmg , * pixmb , * pixmri , * pixmgi , * pixmbi ; <S2SV_StartBug> PIXA * pixa ; <S2SV_EndBug> L_REGPARAMS * rp ; if ( regTestSetup ( argc , argv , & rp ) ) return 1 ; lept_mkdir ( \"lept/adapt\" ) ; pixs = pixRead ( \"wet-day.jpg\" ) ; pixa = pixaCreate ( 0 ) ; pixg = pixConvertRGBToGray ( pixs , 0.33 , 0.34 , 0.33 ) ; pixaAddPix ( pixa , pixs , L_INSERT ) ; pixaAddPix ( pixa , pixg , L_INSERT ) ; pixGetDimensions ( pixs , & w , & h , NULL ) ; startTimer ( ) ; pixim = pixCreate ( w , h , 1 ) ; pixRasterop ( pixim , XS , YS , WS , HS , PIX_SET , NULL , 0 , 0 ) ; pixGetBackgroundGrayMap ( pixg , pixim , SIZE_X , SIZE_Y , BINTHRESH , MINCOUNT , & pixgm ) ; fprintf ( stderr , \"Time<S2SV_blank>for<S2SV_blank>gray<S2SV_blank>adaptmap<S2SV_blank>gen:<S2SV_blank>%7.3f\\\\n\" , stopTimer ( ) ) ; regTestWritePixAndCheck ( rp , pixgm , IFF_PNG ) ; pixaAddPix ( pixa , pixgm , L_INSERT ) ; startTimer ( ) ; pixmi = pixGetInvBackgroundMap ( pixgm , BGVAL , SMOOTH_X , SMOOTH_Y ) ; fprintf ( stderr , \"Time<S2SV_blank>for<S2SV_blank>gray<S2SV_blank>inv<S2SV_blank>map<S2SV_blank>generation:<S2SV_blank>%7.3f\\\\n\" , stopTimer ( ) ) ; regTestWritePixAndCheck ( rp , pixmi , IFF_PNG ) ; pixaAddPix ( pixa , pixmi , L_INSERT ) ; startTimer ( ) ; pix1 = pixApplyInvBackgroundGrayMap ( pixg , pixmi , SIZE_X , SIZE_Y ) ; fprintf ( stderr , \"Time<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>gray<S2SV_blank>inv<S2SV_blank>map:<S2SV_blank>%7.3f\\\\n\" , stopTimer ( ) ) ; regTestWritePixAndCheck ( rp , pix1 , IFF_JFIF_JPEG ) ; pixaAddPix ( pixa , pix1 , L_INSERT ) ; pix2 = pixGammaTRCMasked ( NULL , pix1 , pixim , 1.0 , 0 , 190 ) ; pixInvert ( pixim , pixim ) ; pixGammaTRCMasked ( pix2 , pix2 , pixim , 1.0 , 60 , 190 ) ; regTestWritePixAndCheck ( rp , pix2 , IFF_JFIF_JPEG ) ; pixaAddPix ( pixa , pix2 , L_INSERT ) ; pixDestroy ( & pixim ) ; startTimer ( ) ; pixim = pixCreate ( w , h , 1 ) ; pixRasterop ( pixim , XS , YS , WS , HS , PIX_SET , NULL , 0 , 0 ) ; pixGetBackgroundRGBMap ( pixs , pixim , NULL , SIZE_X , SIZE_Y , BINTHRESH , MINCOUNT , & pixmr , & pixmg , & pixmb ) ; fprintf ( stderr , \"Time<S2SV_blank>for<S2SV_blank>color<S2SV_blank>adaptmap<S2SV_blank>gen:<S2SV_blank>%7.3f\\\\n\" , stopTimer ( ) ) ; regTestWritePixAndCheck ( rp , pixmr , IFF_PNG ) ; regTestWritePixAndCheck ( rp , pixmg , IFF_PNG ) ; regTestWritePixAndCheck ( rp , pixmb , IFF_PNG ) ; pixaAddPix ( pixa , pixmr , L_INSERT ) ; pixaAddPix ( pixa , pixmg , L_INSERT ) ; pixaAddPix ( pixa , pixmb , L_INSERT ) ; startTimer ( ) ; pixmri = pixGetInvBackgroundMap ( pixmr , BGVAL , SMOOTH_X , SMOOTH_Y ) ; pixmgi = pixGetInvBackgroundMap ( pixmg , BGVAL , SMOOTH_X , SMOOTH_Y ) ; pixmbi = pixGetInvBackgroundMap ( pixmb , BGVAL , SMOOTH_X , SMOOTH_Y ) ; fprintf ( stderr , \"Time<S2SV_blank>for<S2SV_blank>color<S2SV_blank>inv<S2SV_blank>map<S2SV_blank>generation:<S2SV_blank>%7.3f\\\\n\" , stopTimer ( ) ) ; regTestWritePixAndCheck ( rp , pixmri , IFF_PNG ) ; regTestWritePixAndCheck ( rp , pixmgi , IFF_PNG ) ; regTestWritePixAndCheck ( rp , pixmbi , IFF_PNG ) ; pixaAddPix ( pixa , pixmri , L_INSERT ) ; pixaAddPix ( pixa , pixmgi , L_INSERT ) ; pixaAddPix ( pixa , pixmbi , L_INSERT ) ; startTimer ( ) ; pix1 = pixApplyInvBackgroundRGBMap ( pixs , pixmri , pixmgi , pixmbi , SIZE_X , SIZE_Y ) ; fprintf ( stderr , \"Time<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>color<S2SV_blank>inv<S2SV_blank>maps:<S2SV_blank>%7.3f\\\\n\" , stopTimer ( ) ) ; regTestWritePixAndCheck ( rp , pix1 , IFF_JFIF_JPEG ) ; pixaAddPix ( pixa , pix1 , L_INSERT ) ; pix2 = pixGammaTRCMasked ( NULL , pix1 , pixim , 1.0 , 0 , 190 ) ; pixInvert ( pixim , pixim ) ; pixGammaTRCMasked ( pix2 , pix2 , pixim , 1.0 , 60 , 190 ) ; regTestWritePixAndCheck ( rp , pix2 , IFF_JFIF_JPEG ) ; pixaAddPix ( pixa , pix2 , L_INSERT ) ; pixDestroy ( & pixim ) ; startTimer ( ) ; pixim = pixCreate ( w , h , 1 ) ; pixRasterop ( pixim , XS , YS , WS , HS , PIX_SET , NULL , 0 , 0 ) ; pix1 = pixBackgroundNorm ( pixs , pixim , NULL , 5 , 10 , BINTHRESH , 20 , BGVAL , SMOOTH_X , SMOOTH_Y ) ; fprintf ( stderr , \"Time<S2SV_blank>for<S2SV_blank>bg<S2SV_blank>normalization:<S2SV_blank>%7.3f\\\\n\" , stopTimer ( ) ) ; regTestWritePixAndCheck ( rp , pix1 , IFF_JFIF_JPEG ) ; pixaAddPix ( pixa , pix1 , L_INSERT ) ; pix2 = pixGammaTRCMasked ( NULL , pix1 , pixim , 1.0 , 0 , 190 ) ; pixInvert ( pixim , pixim ) ; pixGammaTRCMasked ( pix2 , pix2 , pixim , 1.0 , 60 , 190 ) ; regTestWritePixAndCheck ( rp , pix2 , IFF_JFIF_JPEG ) ; pixaAddPix ( pixa , pix2 , L_INSERT ) ; pixDestroy ( & pixim ) ; <S2SV_StartBug> pix1 = pixaDisplayTiledAndScaled ( pixa , 32 , 400 , 4 , 0 , 20 , 2 ) ; <S2SV_EndBug> pixWrite ( \"/tmp/lept/adapt/results.jpg\" , pix1 , IFF_JFIF_JPEG ) ; <S2SV_StartBug> pixDisplayWithTitle ( pix1 , 100 , 0 , NULL , rp -> display ) ; <S2SV_EndBug> <S2SV_StartBug> pixDestroy ( & pix1 ) ; <S2SV_EndBug> pixaDestroy ( & pixa ) ; return regTestCleanup ( rp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PIXA * pixa , * pixa2 <S2SV_ModStart> pixim ) ; pixa2 = pixaCreate ( 3 ) ; pix1 = pixRead ( \"weasel8.png\" ) ; pixGammaTRC ( pix1 , pix1 , 1.0 , 0 , 270 ) ; pixaAddPix ( pixa2 , pix1 , L_COPY ) ; pixGetDimensions ( pix1 , & w , & h , NULL ) ; pixRasterop ( pix1 , 0 , 0 , 5 , h , PIX_SET , NULL , 0 , 0 ) ; pixRasterop ( pix1 <S2SV_ModEnd> , 20 , <S2SV_ModStart> , 20 , 0 , 2 , h , PIX_SET , NULL , 0 , 0 ) ; pixRasterop ( pix1 , 40 , 0 , 3 , h , PIX_SET , NULL , 0 , 0 ) ; pixRasterop ( pix1 , 0 , 0 , w , 3 , PIX_SET , NULL , 0 , 0 ) ; pixRasterop ( pix1 , 0 , 15 , w , 3 , PIX_SET , NULL , 0 , 0 ) ; pixRasterop ( pix1 , 0 , 35 , w , 2 , PIX_SET , NULL , 0 , 0 ) ; pixaAddPix ( pixa2 , pix1 , L_COPY ) ; pixFillMapHoles ( pix1 , w , h , L_FILL_WHITE ) ; pixaAddPix ( pixa2 , pix1 , L_INSERT ) ; pix2 = pixaDisplayTiledInColumns ( pixa2 , 3 , 1.0 , 20 , 1 ) ; regTestWritePixAndCheck ( rp , pix2 , IFF_PNG <S2SV_ModEnd> ) ; pixDisplayWithTitle <S2SV_ModStart> ; pixDisplayWithTitle ( pix2 , 50 , 850 <S2SV_ModEnd> , NULL , <S2SV_ModStart> display ) ; pixaDestroy ( & pixa2 ) ; pixDestroy ( & pix2 ) ; pix1 = pixaDisplayTiledAndScaled ( pixa , 32 , 400 , 4 , 0 , 20 , 2 ) ; pixWrite ( \"/tmp/lept/adapt/results.jpg\" , pix1 , IFF_JFIF_JPEG ) ; pixDisplayWithTitle ( pix1 , 50 , 0 , NULL , rp -> display ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11595\n\n```\nCWE-119 void jslTokenAsString ( int token , char * str , size_t len ) { if ( token > 32 && token < 128 ) { assert ( len >= 4 ) ; str [ 0 ] = '\\\\'' ; str [ 1 ] = ( char ) token ; str [ 2 ] = '\\\\'' ; str [ 3 ] = 0 ; return ; } switch ( token ) { case LEX_EOF : strncpy ( str , \"EOF\" , len ) ; return ; case LEX_ID : strncpy ( str , \"ID\" , len ) ; return ; case LEX_INT : strncpy ( str , \"INT\" , len ) ; return ; case LEX_FLOAT : strncpy ( str , \"FLOAT\" , len ) ; return ; case LEX_STR : strncpy ( str , \"STRING\" , len ) ; return ; case LEX_UNFINISHED_STR : strncpy ( str , \"UNFINISHED<S2SV_blank>STRING\" , len ) ; return ; case LEX_TEMPLATE_LITERAL : strncpy ( str , \"TEMPLATE<S2SV_blank>LITERAL\" , len ) ; return ; case LEX_UNFINISHED_TEMPLATE_LITERAL : strncpy ( str , \"UNFINISHED<S2SV_blank>TEMPLATE<S2SV_blank>LITERAL\" , len ) ; return ; case LEX_REGEX : strncpy ( str , \"REGEX\" , len ) ; return ; case LEX_UNFINISHED_REGEX : strncpy ( str , \"UNFINISHED<S2SV_blank>REGEX\" , len ) ; return ; case LEX_UNFINISHED_COMMENT : strncpy ( str , \"UNFINISHED<S2SV_blank>COMMENT\" , len ) ; return ; } if ( token >= _LEX_OPERATOR_START && token < _LEX_R_LIST_END ) { const char tokenNames [ ] = \"==\\\\0\" \"===\\\\0\" \"!=\\\\0\" \"!==\\\\0\" \"<=\\\\0\" \"<<\\\\0\" \"<<=\\\\0\" \">=\\\\0\" \">>\\\\0\" \">>>\\\\0\" \">>=\\\\0\" \">>>=\\\\0\" \"+=\\\\0\" \"-=\\\\0\" \"++\\\\0\" \"--\\\\0\" \"*=\\\\0\" \"/=\\\\0\" \"%=\\\\0\" \"&=\\\\0\" \"&&\\\\0\" \"|=\\\\0\" \"||\\\\0\" \"^=\\\\0\" \"=>\\\\0\" \"if\\\\0\" \"else\\\\0\" \"do\\\\0\" \"while\\\\0\" \"for\\\\0\" \"return\\\\0\" \"continue\\\\0\" \"function\\\\0\" \"return\\\\0\" \"var\\\\0\" \"let\\\\0\" \"const\\\\0\" \"this\\\\0\" \"throw\\\\0\" \"try\\\\0\" \"catch\\\\0\" \"finally\\\\0\" \"true\\\\0\" \"false\\\\0\" \"null\\\\0\" \"undefined\\\\0\" \"new\\\\0\" \"in\\\\0\" \"instanceof\\\\0\" \"switch\\\\0\" \"case\\\\0\" \"default\\\\0\" \"delete\\\\0\" \"typeof\\\\0\" \"void\\\\0\" \"debugger\\\\0\" \"class\\\\0\" \"extends\\\\0\" \"super\\\\0\" \"static\\\\0\" ; unsigned int p = 0 ; int n = token - _LEX_OPERATOR_START ; while ( n > 0 && p < sizeof ( tokenNames ) ) { while ( tokenNames [ p ] && p < sizeof ( tokenNames ) ) p ++ ; p ++ ; n -- ; } assert ( n == 0 ) ; strncpy ( str , & tokenNames [ p ] , len ) ; return ; } assert ( len >= 10 ) ; <S2SV_StartBug> strncpy ( str , \"?[\" , len ) ; <S2SV_EndBug> itostr ( token , & str [ 2 ] , 10 ) ; strncat ( str , \"]\" , len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 10 ) ; espruino_snprintf ( str , len , \"?[%d]\" , token <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void count_segs ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_EndBug> <S2SV_StartBug> MODE_INFO * * mi_8x8 , <S2SV_EndBug> int * no_pred_segcounts , int ( * temporal_predictor_count ) [ 2 ] , int * t_unpred_seg_counts , int bw , int bh , int mi_row , int mi_col ) { <S2SV_StartBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_EndBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; int segment_id ; if ( mi_row >= cm -> mi_rows || mi_col >= cm -> mi_cols ) return ; <S2SV_StartBug> xd -> mi = mi_8x8 ; <S2SV_EndBug> segment_id = xd -> mi [ 0 ] -> mbmi . segment_id ; set_mi_row_col ( xd , tile , mi_row , bh , mi_col , bw , cm -> mi_rows , cm -> mi_cols ) ; no_pred_segcounts [ segment_id ] ++ ; if ( cm -> frame_type != KEY_FRAME ) { <S2SV_StartBug> const BLOCK_SIZE bsize = mi_8x8 [ 0 ] -> mbmi . sb_type ; <S2SV_EndBug> <S2SV_StartBug> const int pred_segment_id = vp9_get_segment_id ( cm , cm -> last_frame_seg_map , <S2SV_EndBug> bsize , mi_row , mi_col ) ; const int pred_flag = pred_segment_id == segment_id ; const int pred_context = vp9_get_pred_context_seg_id ( xd ) ; xd -> mi [ 0 ] -> mbmi . seg_id_predicted = pred_flag ; temporal_predictor_count [ pred_context ] [ pred_flag ] ++ ; if ( ! pred_flag ) t_unpred_seg_counts [ segment_id ] ++ ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void count_segs ( const VP9_COMMON * cm , MACROBLOCKD * xd , <S2SV_ModEnd> const TileInfo * <S2SV_ModStart> const TileInfo * <S2SV_ModEnd> tile , MODE_INFO <S2SV_ModStart> MODE_INFO * * mi <S2SV_ModEnd> , int * <S2SV_ModStart> mi_col ) { <S2SV_ModEnd> int segment_id ; <S2SV_ModStart> -> mi = mi <S2SV_ModEnd> ; segment_id = <S2SV_ModStart> BLOCK_SIZE bsize = xd -> mi <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> int pred_segment_id = get_segment_id <S2SV_ModEnd> ( cm ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13037\n\n```\nCWE-125 static void ip_optprint ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register u_int option_len ; const char * sep = \"\" ; for ( ; length > 0 ; cp += option_len , length -= option_len ) { u_int option_code ; ND_PRINT ( ( ndo , \"%s\" , sep ) ) ; sep = \",\" ; ND_TCHECK ( * cp ) ; option_code = * cp ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( ip_option_values , \"unknown<S2SV_blank>%u\" , option_code ) ) ) ; if ( option_code == IPOPT_NOP || option_code == IPOPT_EOL ) option_len = 1 ; else { ND_TCHECK ( cp [ 1 ] ) ; option_len = cp [ 1 ] ; if ( option_len < 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; return ; } } if ( option_len > length ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; return ; } ND_TCHECK2 ( * cp , option_len ) ; switch ( option_code ) { case IPOPT_EOL : return ; case IPOPT_TS : <S2SV_StartBug> ip_printts ( ndo , cp , option_len ) ; <S2SV_EndBug> break ; case IPOPT_RR : case IPOPT_SSRR : case IPOPT_LSRR : if ( ip_printroute ( ndo , cp , option_len ) == - 1 ) goto trunc ; break ; <S2SV_StartBug> case IPOPT_RA : <S2SV_EndBug> if ( option_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; break ; } ND_TCHECK ( cp [ 3 ] ) ; if ( EXTRACT_16BITS ( & cp [ 2 ] ) != 0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>value<S2SV_blank>%u\" , EXTRACT_16BITS ( & cp [ 2 ] ) ) ) ; break ; case IPOPT_NOP : case IPOPT_SECURITY : default : break ; } } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case IPOPT_TS : if ( ip_printts <S2SV_ModEnd> ( ndo , <S2SV_ModStart> break ; case IPOPT_RR : case IPOPT_SSRR : case IPOPT_LSRR : if ( ip_printroute ( ndo , cp , option_len ) == - 1 ) goto trunc ; break ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3915\n\n```\nCWE-264 int append_camera_metadata ( camera_metadata_t * dst , const camera_metadata_t * src ) { <S2SV_StartBug> if ( dst == NULL || src == NULL ) return ERROR ; <S2SV_EndBug> if ( dst -> entry_capacity < src -> entry_count + dst -> entry_count ) return ERROR ; if ( dst -> data_capacity < src -> data_count + dst -> data_count ) return ERROR ; memcpy ( get_entries ( dst ) + dst -> entry_count , get_entries ( src ) , sizeof ( camera_metadata_buffer_entry_t [ src -> entry_count ] ) ) ; memcpy ( get_data ( dst ) + dst -> data_count , get_data ( src ) , sizeof ( uint8_t [ src -> data_count ] ) ) ; if ( dst -> data_count != 0 ) { camera_metadata_buffer_entry_t * entry = get_entries ( dst ) + dst -> entry_count ; for ( size_t i = 0 ; i < src -> entry_count ; i ++ , entry ++ ) { if ( calculate_camera_metadata_entry_data_size ( entry -> type , entry -> count ) > 0 ) { entry -> data . offset += dst -> data_count ; } } } if ( dst -> entry_count == 0 ) { dst -> flags |= src -> flags & FLAG_SORTED ; } else if ( src -> entry_count != 0 ) { dst -> flags &= ~ FLAG_SORTED ; } else { } dst -> entry_count += src -> entry_count ; dst -> data_count += src -> data_count ; assert ( validate_camera_metadata_structure ( dst , NULL ) == OK ) ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> src == NULL ) return ERROR ; if ( src -> entry_count + dst -> entry_count < src -> entry_count ) return ERROR ; if ( src -> data_count + dst -> data_count < src -> data_count\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5509\n\n```\nCWE-787 static MagickBooleanType ReadPSDChannelRLE ( Image * image , const PSDInfo * psd_info , const ssize_t type , MagickOffsetType * sizes , ExceptionInfo * exception ) { MagickBooleanType status ; size_t length , row_size ; ssize_t count , y ; unsigned char * compact_pixels , * pixels ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>data<S2SV_blank>is<S2SV_blank>RLE<S2SV_blank>compressed\" ) ; row_size = GetPSDRowSize ( image ) ; pixels = ( unsigned char * ) AcquireQuantumMemory ( row_size , sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; length = 0 ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) if ( ( MagickOffsetType ) length < sizes [ y ] ) length = ( size_t ) sizes [ y ] ; if ( length > row_size + 256 ) { pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; ThrowBinaryException ( ResourceLimitError , \"InvalidLength\" , image -> filename ) ; } compact_pixels = ( unsigned char * ) AcquireQuantumMemory ( length , sizeof ( * pixels ) ) ; if ( compact_pixels == ( unsigned char * ) NULL ) { pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; } ( void ) ResetMagickMemory ( compact_pixels , 0 , length * sizeof ( * compact_pixels ) ) ; status = MagickTrue ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { status = MagickFalse ; count = ReadBlob ( image , ( size_t ) sizes [ y ] , compact_pixels ) ; if ( count != ( ssize_t ) sizes [ y ] ) break ; count = DecodePSDPixels ( ( size_t ) sizes [ y ] , compact_pixels , ( ssize_t ) ( image -> depth == 1 ? 123456 : image -> depth ) , row_size , pixels ) ; if ( count != ( ssize_t ) row_size ) break ; status = ReadPSDChannelPixels ( image , psd_info -> channels , y , type , pixels , exception ) ; if ( status == MagickFalse ) break ; } compact_pixels = ( unsigned char * ) RelinquishMagickMemory ( compact_pixels ) ; pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 static jas_image_cmpt_t * jas_image_cmpt_create ( int_fast32_t tlx , int_fast32_t tly , int_fast32_t hstep , int_fast32_t vstep , int_fast32_t width , int_fast32_t height , uint_fast16_t depth , bool sgnd , uint_fast32_t inmem ) { jas_image_cmpt_t * cmpt ; size_t size ; cmpt = 0 ; if ( width < 0 || height < 0 || hstep <= 0 || vstep <= 0 ) { goto error ; } if ( ! jas_safe_intfast32_add ( tlx , width , 0 ) || ! jas_safe_intfast32_add ( tly , height , 0 ) ) { goto error ; } if ( ! ( cmpt = jas_malloc ( sizeof ( jas_image_cmpt_t ) ) ) ) { goto error ; } cmpt -> type_ = JAS_IMAGE_CT_UNKNOWN ; cmpt -> tlx_ = tlx ; cmpt -> tly_ = tly ; cmpt -> hstep_ = hstep ; cmpt -> vstep_ = vstep ; cmpt -> width_ = width ; cmpt -> height_ = height ; cmpt -> prec_ = depth ; cmpt -> sgnd_ = sgnd ; cmpt -> stream_ = 0 ; cmpt -> cps_ = ( depth + 7 ) / 8 ; if ( ! jas_safe_size_mul ( cmpt -> width_ , cmpt -> height_ , & size ) || ! jas_safe_size_mul ( size , cmpt -> cps_ , & size ) ) { goto error ; } <S2SV_StartBug> cmpt -> stream_ = ( inmem ) ? jas_stream_memopen ( 0 , size ) : <S2SV_EndBug> jas_stream_tmpfile ( ) ; if ( ! cmpt -> stream_ ) { goto error ; } if ( jas_stream_seek ( cmpt -> stream_ , size - 1 , SEEK_SET ) < 0 || jas_stream_putc ( cmpt -> stream_ , 0 ) == EOF || jas_stream_seek ( cmpt -> stream_ , 0 , SEEK_SET ) < 0 ) { goto error ; } return cmpt ; error : if ( cmpt ) { jas_image_cmpt_destroy ( cmpt ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inmem ) ? jas_stream_memopen2 <S2SV_ModEnd> ( 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19071\n\n```\nCWE-401 static int rsi_send_beacon ( struct rsi_common * common ) { struct sk_buff * skb = NULL ; u8 dword_align_bytes = 0 ; skb = dev_alloc_skb ( MAX_MGMT_PKT_SIZE ) ; if ( ! skb ) return - ENOMEM ; memset ( skb -> data , 0 , MAX_MGMT_PKT_SIZE ) ; dword_align_bytes = ( ( unsigned long ) skb -> data & 0x3f ) ; if ( dword_align_bytes ) skb_pull ( skb , ( 64 - dword_align_bytes ) ) ; if ( rsi_prepare_beacon ( common , skb ) ) { rsi_dbg ( ERR_ZONE , \"Failed<S2SV_blank>to<S2SV_blank>prepare<S2SV_blank>beacon\\\\n\" ) ; <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> } skb_queue_tail ( & common -> tx_queue [ MGMT_BEACON_Q ] , skb ) ; rsi_set_event ( & common -> tx_thread . event ) ; rsi_dbg ( DATA_TX_ZONE , \"%s:<S2SV_blank>Added<S2SV_blank>to<S2SV_blank>beacon<S2SV_blank>queue\\\\n\" , __func__ ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Failed<S2SV_blank>to<S2SV_blank>prepare<S2SV_blank>beacon\\\\n\" ) ; dev_kfree_skb ( skb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6401\n\n```\nCWE-310 static void * my_malloc ( size_t size ) { <S2SV_StartBug> malloc_called += 1 ; <S2SV_EndBug> return malloc ( size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { malloc_called = <S2SV_ModEnd> 1 ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-79(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11454\n\n```\nCWE-79 static void do_viewlog ( HttpRequest req , HttpResponse res ) { if ( is_readonly ( req ) ) { send_error ( req , res , SC_FORBIDDEN , \"You<S2SV_blank>do<S2SV_blank>not<S2SV_blank>have<S2SV_blank>sufficient<S2SV_blank>privileges<S2SV_blank>to<S2SV_blank>access<S2SV_blank>this<S2SV_blank>page\" ) ; return ; } do_head ( res , \"_viewlog\" , \"View<S2SV_blank>log\" , 100 ) ; if ( ( Run . flags & Run_Log ) && ! ( Run . flags & Run_UseSyslog ) ) { FILE * f = fopen ( Run . files . log , \"r\" ) ; if ( f ) { size_t n ; char buf [ 512 ] ; StringBuffer_append ( res -> outputbuffer , \"<br><p><form><textarea<S2SV_blank>cols=120<S2SV_blank>rows=30<S2SV_blank>readonly>\" ) ; while ( ( n = fread ( buf , sizeof ( char ) , sizeof ( buf ) - 1 , f ) ) > 0 ) { buf [ n ] = 0 ; <S2SV_StartBug> StringBuffer_append ( res -> outputbuffer , \"%s\" , buf ) ; <S2SV_EndBug> } fclose ( f ) ; StringBuffer_append ( res -> outputbuffer , \"</textarea></form>\" ) ; } else { StringBuffer_append ( res -> outputbuffer , \"Error<S2SV_blank>opening<S2SV_blank>logfile:<S2SV_blank>%s\" , STRERROR ) ; } } else { StringBuffer_append ( res -> outputbuffer , \"<b>Cannot<S2SV_blank>view<S2SV_blank>logfile:</b><br>\" ) ; if ( ! ( Run . flags & Run_Log ) ) StringBuffer_append ( res -> outputbuffer , \"Monit<S2SV_blank>was<S2SV_blank>started<S2SV_blank>without<S2SV_blank>logging\" ) ; else StringBuffer_append ( res -> outputbuffer , \"Monit<S2SV_blank>uses<S2SV_blank>syslog\" ) ; } do_foot ( res ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; escapeHTML ( res -> outputbuffer <S2SV_ModEnd> , buf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * pl_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { <S2SV_StartBug> if ( * rsize >= 60 && rdesc [ 39 ] == 0x2a && rdesc [ 40 ] == 0xf5 && <S2SV_EndBug> rdesc [ 41 ] == 0x00 && rdesc [ 59 ] == 0x26 && rdesc [ 60 ] == 0xf9 && rdesc [ 61 ] == 0x00 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Petalynx<S2SV_blank>Maxter<S2SV_blank>Remote<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 60 ] = 0xfa ; rdesc [ 40 ] = 0xfa ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 62 <S2SV_ModEnd> && rdesc [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-193(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5331\n\n```\nCWE-193 bool radeon_atom_get_tv_timings ( struct radeon_device * rdev , int index , struct drm_display_mode * mode ) { struct radeon_mode_info * mode_info = & rdev -> mode_info ; ATOM_ANALOG_TV_INFO * tv_info ; ATOM_ANALOG_TV_INFO_V1_2 * tv_info_v1_2 ; ATOM_DTD_FORMAT * dtd_timings ; int data_index = GetIndexIntoMasterTable ( DATA , AnalogTV_Info ) ; u8 frev , crev ; u16 data_offset , misc ; if ( ! atom_parse_data_header ( mode_info -> atom_context , data_index , NULL , & frev , & crev , & data_offset ) ) return false ; switch ( crev ) { case 1 : tv_info = ( ATOM_ANALOG_TV_INFO * ) ( mode_info -> atom_context -> bios + data_offset ) ; <S2SV_StartBug> if ( index > MAX_SUPPORTED_TV_TIMING ) <S2SV_EndBug> return false ; mode -> crtc_htotal = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_Total ) ; mode -> crtc_hdisplay = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_Disp ) ; mode -> crtc_hsync_start = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_SyncStart ) ; mode -> crtc_hsync_end = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_SyncStart ) + le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_SyncWidth ) ; mode -> crtc_vtotal = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_Total ) ; mode -> crtc_vdisplay = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_Disp ) ; mode -> crtc_vsync_start = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_SyncStart ) ; mode -> crtc_vsync_end = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_SyncStart ) + le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_SyncWidth ) ; mode -> flags = 0 ; misc = le16_to_cpu ( tv_info -> aModeTimings [ index ] . susModeMiscInfo . usAccess ) ; if ( misc & ATOM_VSYNC_POLARITY ) mode -> flags |= DRM_MODE_FLAG_NVSYNC ; if ( misc & ATOM_HSYNC_POLARITY ) mode -> flags |= DRM_MODE_FLAG_NHSYNC ; if ( misc & ATOM_COMPOSITESYNC ) mode -> flags |= DRM_MODE_FLAG_CSYNC ; if ( misc & ATOM_INTERLACE ) mode -> flags |= DRM_MODE_FLAG_INTERLACE ; if ( misc & ATOM_DOUBLE_CLOCK_MODE ) mode -> flags |= DRM_MODE_FLAG_DBLSCAN ; mode -> clock = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usPixelClock ) * 10 ; if ( index == 1 ) { mode -> crtc_htotal -= 1 ; mode -> crtc_vtotal -= 1 ; } break ; case 2 : tv_info_v1_2 = ( ATOM_ANALOG_TV_INFO_V1_2 * ) ( mode_info -> atom_context -> bios + data_offset ) ; <S2SV_StartBug> if ( index > MAX_SUPPORTED_TV_TIMING_V1_2 ) <S2SV_EndBug> return false ; dtd_timings = & tv_info_v1_2 -> aModeTimings [ index ] ; mode -> crtc_htotal = le16_to_cpu ( dtd_timings -> usHActive ) + le16_to_cpu ( dtd_timings -> usHBlanking_Time ) ; mode -> crtc_hdisplay = le16_to_cpu ( dtd_timings -> usHActive ) ; mode -> crtc_hsync_start = le16_to_cpu ( dtd_timings -> usHActive ) + le16_to_cpu ( dtd_timings -> usHSyncOffset ) ; mode -> crtc_hsync_end = mode -> crtc_hsync_start + le16_to_cpu ( dtd_timings -> usHSyncWidth ) ; mode -> crtc_vtotal = le16_to_cpu ( dtd_timings -> usVActive ) + le16_to_cpu ( dtd_timings -> usVBlanking_Time ) ; mode -> crtc_vdisplay = le16_to_cpu ( dtd_timings -> usVActive ) ; mode -> crtc_vsync_start = le16_to_cpu ( dtd_timings -> usVActive ) + le16_to_cpu ( dtd_timings -> usVSyncOffset ) ; mode -> crtc_vsync_end = mode -> crtc_vsync_start + le16_to_cpu ( dtd_timings -> usVSyncWidth ) ; mode -> flags = 0 ; misc = le16_to_cpu ( dtd_timings -> susModeMiscInfo . usAccess ) ; if ( misc & ATOM_VSYNC_POLARITY ) mode -> flags |= DRM_MODE_FLAG_NVSYNC ; if ( misc & ATOM_HSYNC_POLARITY ) mode -> flags |= DRM_MODE_FLAG_NHSYNC ; if ( misc & ATOM_COMPOSITESYNC ) mode -> flags |= DRM_MODE_FLAG_CSYNC ; if ( misc & ATOM_INTERLACE ) mode -> flags |= DRM_MODE_FLAG_INTERLACE ; if ( misc & ATOM_DOUBLE_CLOCK_MODE ) mode -> flags |= DRM_MODE_FLAG_DBLSCAN ; mode -> clock = le16_to_cpu ( dtd_timings -> usPixClk ) * 10 ; break ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( index >= <S2SV_ModEnd> MAX_SUPPORTED_TV_TIMING ) return <S2SV_ModStart> if ( index >= <S2SV_ModEnd> MAX_SUPPORTED_TV_TIMING_V1_2 ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4608\n\n```\nCWE-119 int lzo1x_decompress_safe ( const unsigned char * in , size_t in_len , unsigned char * out , size_t * out_len ) { unsigned char * op ; const unsigned char * ip ; size_t t , next ; size_t state = 0 ; const unsigned char * m_pos ; const unsigned char * const ip_end = in + in_len ; unsigned char * const op_end = out + * out_len ; op = out ; ip = in ; if ( unlikely ( in_len < 3 ) ) goto input_overrun ; if ( * ip > 17 ) { t = * ip ++ - 17 ; if ( t < 4 ) { next = t ; goto match_next ; } goto copy_literal_run ; } for ( ; ; ) { t = * ip ++ ; if ( t < 16 ) { if ( likely ( state == 0 ) ) { if ( unlikely ( t == 0 ) ) { while ( unlikely ( * ip == 0 ) ) { t += 255 ; ip ++ ; <S2SV_StartBug> NEED_IP ( 1 ) ; <S2SV_EndBug> } t += 15 + * ip ++ ; } t += 3 ; copy_literal_run : # if defined ( CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS ) <S2SV_StartBug> if ( likely ( HAVE_IP ( t + 15 ) && HAVE_OP ( t + 15 ) ) ) { <S2SV_EndBug> const unsigned char * ie = ip + t ; unsigned char * oe = op + t ; do { COPY8 ( op , ip ) ; op += 8 ; ip += 8 ; COPY8 ( op , ip ) ; op += 8 ; ip += 8 ; } while ( ip < ie ) ; ip = ie ; op = oe ; } else # endif { <S2SV_StartBug> NEED_OP ( t ) ; <S2SV_EndBug> <S2SV_StartBug> NEED_IP ( t + 3 ) ; <S2SV_EndBug> do { * op ++ = * ip ++ ; } while ( -- t > 0 ) ; } state = 4 ; continue ; } else if ( state != 4 ) { next = t & 3 ; m_pos = op - 1 ; m_pos -= t >> 2 ; m_pos -= * ip ++ << 2 ; TEST_LB ( m_pos ) ; <S2SV_StartBug> NEED_OP ( 2 ) ; <S2SV_EndBug> op [ 0 ] = m_pos [ 0 ] ; op [ 1 ] = m_pos [ 1 ] ; op += 2 ; goto match_next ; } else { next = t & 3 ; m_pos = op - ( 1 + M2_MAX_OFFSET ) ; m_pos -= t >> 2 ; m_pos -= * ip ++ << 2 ; t = 3 ; } } else if ( t >= 64 ) { next = t & 3 ; m_pos = op - 1 ; m_pos -= ( t >> 2 ) & 7 ; m_pos -= * ip ++ << 3 ; t = ( t >> 5 ) - 1 + ( 3 - 1 ) ; } else if ( t >= 32 ) { t = ( t & 31 ) + ( 3 - 1 ) ; if ( unlikely ( t == 2 ) ) { while ( unlikely ( * ip == 0 ) ) { t += 255 ; ip ++ ; <S2SV_StartBug> NEED_IP ( 1 ) ; <S2SV_EndBug> } t += 31 + * ip ++ ; <S2SV_StartBug> NEED_IP ( 2 ) ; <S2SV_EndBug> } m_pos = op - 1 ; next = get_unaligned_le16 ( ip ) ; ip += 2 ; m_pos -= next >> 2 ; next &= 3 ; } else { m_pos = op ; m_pos -= ( t & 8 ) << 11 ; t = ( t & 7 ) + ( 3 - 1 ) ; if ( unlikely ( t == 2 ) ) { while ( unlikely ( * ip == 0 ) ) { t += 255 ; ip ++ ; <S2SV_StartBug> NEED_IP ( 1 ) ; <S2SV_EndBug> } t += 7 + * ip ++ ; <S2SV_StartBug> NEED_IP ( 2 ) ; <S2SV_EndBug> } next = get_unaligned_le16 ( ip ) ; ip += 2 ; m_pos -= next >> 2 ; next &= 3 ; if ( m_pos == op ) goto eof_found ; m_pos -= 0x4000 ; } TEST_LB ( m_pos ) ; # if defined ( CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS ) if ( op - m_pos >= 8 ) { unsigned char * oe = op + t ; <S2SV_StartBug> if ( likely ( HAVE_OP ( t + 15 ) ) ) { <S2SV_EndBug> do { COPY8 ( op , m_pos ) ; op += 8 ; m_pos += 8 ; COPY8 ( op , m_pos ) ; op += 8 ; m_pos += 8 ; } while ( op < oe ) ; op = oe ; <S2SV_StartBug> if ( HAVE_IP ( 6 ) ) { <S2SV_EndBug> state = next ; COPY4 ( op , ip ) ; op += next ; ip += next ; continue ; } } else { <S2SV_StartBug> NEED_OP ( t ) ; <S2SV_EndBug> do { * op ++ = * m_pos ++ ; } while ( op < oe ) ; } } else # endif { unsigned char * oe = op + t ; <S2SV_StartBug> NEED_OP ( t ) ; <S2SV_EndBug> op [ 0 ] = m_pos [ 0 ] ; op [ 1 ] = m_pos [ 1 ] ; op += 2 ; m_pos += 2 ; do { * op ++ = * m_pos ++ ; } while ( op < oe ) ; } match_next : state = next ; t = next ; # if defined ( CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS ) <S2SV_StartBug> if ( likely ( HAVE_IP ( 6 ) && HAVE_OP ( 4 ) ) ) { <S2SV_EndBug> COPY4 ( op , ip ) ; op += t ; ip += t ; } else # endif { <S2SV_StartBug> NEED_IP ( t + 3 ) ; <S2SV_EndBug> <S2SV_StartBug> NEED_OP ( t ) ; <S2SV_EndBug> while ( t > 0 ) { * op ++ = * ip ++ ; t -- ; } } } eof_found : * out_len = op - out ; return ( t != 3 ? LZO_E_ERROR : ip == ip_end ? LZO_E_OK : ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN ) ; input_overrun : * out_len = op - out ; return LZO_E_INPUT_OVERRUN ; output_overrun : * out_len = op - out ; return LZO_E_OUTPUT_OVERRUN ; lookbehind_overrun : * out_len = op - out ; return LZO_E_LOOKBEHIND_OVERRUN ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NEED_IP ( 1 , 0 <S2SV_ModStart> HAVE_IP ( t , <S2SV_ModEnd> 15 ) && <S2SV_ModStart> HAVE_OP ( t , <S2SV_ModEnd> 15 ) ) <S2SV_ModStart> NEED_OP ( t , 0 <S2SV_ModStart> NEED_IP ( t , <S2SV_ModEnd> 3 ) ; <S2SV_ModStart> NEED_OP ( 2 , 0 <S2SV_ModStart> NEED_IP ( 1 , 0 <S2SV_ModStart> NEED_IP ( 2 , 0 <S2SV_ModStart> NEED_IP ( 1 , 0 <S2SV_ModStart> NEED_IP ( 2 , 0 <S2SV_ModStart> HAVE_OP ( t , <S2SV_ModEnd> 15 ) ) <S2SV_ModStart> HAVE_IP ( 6 , 0 <S2SV_ModStart> NEED_OP ( t , 0 <S2SV_ModStart> NEED_OP ( t , 0 <S2SV_ModStart> HAVE_IP ( 6 , 0 <S2SV_ModStart> HAVE_OP ( 4 , 0 <S2SV_ModStart> NEED_IP ( t , <S2SV_ModEnd> 3 ) ; <S2SV_ModStart> NEED_OP ( t , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-276(不正确的默认权限)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-24717\n\n```\nCWE-276 int zfs_fastaccesschk_execute ( znode_t * zdp , cred_t * cr ) { <S2SV_StartBug> boolean_t owner = B_FALSE ; <S2SV_EndBug> boolean_t groupmbr = B_FALSE ; boolean_t is_attr ; uid_t uid = crgetuid ( cr ) ; if ( zdp -> z_pflags & ZFS_AV_QUARANTINED ) return ( 1 ) ; is_attr = ( ( zdp -> z_pflags & ZFS_XATTR ) && ( ZTOV ( zdp ) -> v_type == VDIR ) ) ; if ( is_attr ) return ( 1 ) ; if ( zdp -> z_pflags & ZFS_NO_EXECS_DENIED ) return ( 0 ) ; <S2SV_StartBug> mutex_enter ( & zdp -> z_acl_lock ) ; <S2SV_EndBug> if ( FUID_INDEX ( zdp -> z_uid ) != 0 || FUID_INDEX ( zdp -> z_gid ) != 0 ) { goto out_slow ; } if ( uid == zdp -> z_uid ) { owner = B_TRUE ; if ( zdp -> z_mode & S_IXUSR ) { goto out ; } else { goto out_slow ; } } if ( groupmember ( zdp -> z_gid , cr ) ) { groupmbr = B_TRUE ; if ( zdp -> z_mode & S_IXGRP ) { goto out ; } else { goto out_slow ; } } if ( ! owner && ! groupmbr ) { if ( zdp -> z_mode & S_IXOTH ) { goto out ; } } out : mutex_exit ( & zdp -> z_acl_lock ) ; return ( 0 ) ; out_slow : mutex_exit ( & zdp -> z_acl_lock ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { boolean_t is_attr <S2SV_ModEnd> ; if ( <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> return ( 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-13112\n\n```\nCWE-125 static void exif_mnote_data_olympus_load ( ExifMnoteData * en , const unsigned char * buf , unsigned int buf_size ) { ExifMnoteDataOlympus * n = ( ExifMnoteDataOlympus * ) en ; ExifShort c ; size_t i , tcount , o , o2 , datao = 6 , base = 0 ; if ( ! n || ! buf || ! buf_size ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } o2 = 6 + n -> offset ; <S2SV_StartBug> if ( ( o2 + 10 < o2 ) || ( o2 + 10 < 10 ) || ( o2 + 10 > buf_size ) ) { <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } n -> version = exif_mnote_data_olympus_identify_variant ( buf + o2 , buf_size - o2 ) ; switch ( n -> version ) { case olympusV1 : case sanyoV1 : case epsonV1 : exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Olympus/Sanyo/Epson<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v1...\" ) ; if ( buf [ o2 + 6 ] == 1 ) n -> order = EXIF_BYTE_ORDER_INTEL ; else if ( buf [ o2 + 6 + 1 ] == 1 ) n -> order = EXIF_BYTE_ORDER_MOTOROLA ; o2 += 8 ; c = exif_get_short ( buf + o2 , n -> order ) ; if ( ( ! ( c & 0xFF ) ) && ( c > 0x500 ) ) { if ( n -> order == EXIF_BYTE_ORDER_INTEL ) { n -> order = EXIF_BYTE_ORDER_MOTOROLA ; } else { n -> order = EXIF_BYTE_ORDER_INTEL ; } } break ; case olympusV2 : datao = o2 ; o2 += 8 ; <S2SV_StartBug> if ( ( o2 + 4 < o2 ) || ( o2 + 4 < 4 ) || ( o2 + 4 > buf_size ) ) return ; <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Olympus<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v2<S2SV_blank>(0x%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x)...\" , buf [ o2 + 0 ] , buf [ o2 + 1 ] , buf [ o2 + 2 ] , buf [ o2 + 3 ] ) ; if ( ( buf [ o2 ] == 'I' ) && ( buf [ o2 + 1 ] == 'I' ) ) n -> order = EXIF_BYTE_ORDER_INTEL ; else if ( ( buf [ o2 ] == 'M' ) && ( buf [ o2 + 1 ] == 'M' ) ) n -> order = EXIF_BYTE_ORDER_MOTOROLA ; o2 += 4 ; break ; case nikonV1 : o2 += 6 ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Nikon<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v1<S2SV_blank>(0x%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>\" \"%02x)...\" , buf [ o2 + 0 ] , buf [ o2 + 1 ] , buf [ o2 + 2 ] , buf [ o2 + 3 ] ) ; o2 += 1 ; o2 += 1 ; base = MNOTE_NIKON1_TAG_BASE ; c = exif_get_short ( buf + o2 , n -> order ) ; if ( ( ! ( c & 0xFF ) ) && ( c > 0x500 ) ) { if ( n -> order == EXIF_BYTE_ORDER_INTEL ) { n -> order = EXIF_BYTE_ORDER_MOTOROLA ; } else { n -> order = EXIF_BYTE_ORDER_INTEL ; } } break ; case nikonV2 : o2 += 6 ; <S2SV_StartBug> if ( ( o2 + 12 < o2 ) || ( o2 + 12 < 12 ) || ( o2 + 12 > buf_size ) ) return ; <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Nikon<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v2<S2SV_blank>(0x%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>\" \"%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x)...\" , buf [ o2 + 0 ] , buf [ o2 + 1 ] , buf [ o2 + 2 ] , buf [ o2 + 3 ] , buf [ o2 + 4 ] , buf [ o2 + 5 ] , buf [ o2 + 6 ] , buf [ o2 + 7 ] ) ; o2 += 1 ; o2 += 1 ; o2 += 2 ; datao = o2 ; if ( ! strncmp ( ( char * ) & buf [ o2 ] , \"II\" , 2 ) ) n -> order = EXIF_BYTE_ORDER_INTEL ; else if ( ! strncmp ( ( char * ) & buf [ o2 ] , \"MM\" , 2 ) ) n -> order = EXIF_BYTE_ORDER_MOTOROLA ; else { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Unknown<S2SV_blank>\" \"byte<S2SV_blank>order<S2SV_blank>\\'%c%c\\'\" , buf [ o2 ] , buf [ o2 + 1 ] ) ; return ; } o2 += 2 ; o2 += 2 ; o2 = datao + exif_get_long ( buf + o2 , n -> order ) ; break ; case nikonV0 : exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Nikon<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v0<S2SV_blank>(0x%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>\" \"%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x)...\" , buf [ o2 + 0 ] , buf [ o2 + 1 ] , buf [ o2 + 2 ] , buf [ o2 + 3 ] , buf [ o2 + 4 ] , buf [ o2 + 5 ] , buf [ o2 + 6 ] , buf [ o2 + 7 ] ) ; n -> order = EXIF_BYTE_ORDER_MOTOROLA ; break ; default : exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Unknown<S2SV_blank>Olympus<S2SV_blank>variant<S2SV_blank>%i.\" , n -> version ) ; return ; } <S2SV_StartBug> if ( ( o2 + 2 < o2 ) || ( o2 + 2 < 2 ) || ( o2 + 2 > buf_size ) ) { <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } c = exif_get_short ( buf + o2 , n -> order ) ; o2 += 2 ; exif_mnote_data_olympus_clear ( n ) ; n -> entries = exif_mem_alloc ( en -> mem , sizeof ( MnoteOlympusEntry ) * c ) ; if ( ! n -> entries ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteOlympus\" , sizeof ( MnoteOlympusEntry ) * c ) ; return ; } tcount = 0 ; for ( i = c , o = o2 ; i ; -- i , o += 12 ) { size_t s ; <S2SV_StartBug> if ( ( o + 12 < o ) || ( o + 12 < 12 ) || ( o + 12 > buf_size ) ) { <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , <S2SV_StartBug> \"ExifMnoteOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; <S2SV_EndBug> break ; } n -> entries [ tcount ] . tag = exif_get_short ( buf + o , n -> order ) + base ; <S2SV_StartBug> n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; <S2SV_EndBug> <S2SV_StartBug> n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; <S2SV_EndBug> n -> entries [ tcount ] . order = n -> order ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteOlympus\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_olympus_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; s = exif_format_get_size ( n -> entries [ tcount ] . format ) * n -> entries [ tcount ] . components ; n -> entries [ tcount ] . size = s ; if ( s ) { size_t dataofs = o + 8 ; if ( s > 4 ) { dataofs = exif_get_long ( buf + dataofs , n -> order ) + datao ; # ifdef EXIF_OVERCOME_SANYO_OFFSET_BUG <S2SV_StartBug> if ( dataofs + s > buf_size && n -> version == sanyoV1 ) { <S2SV_EndBug> dataofs -= datao + 6 ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteOlympus\" , \"Inconsistent<S2SV_blank>thumbnail<S2SV_blank>tag<S2SV_blank>offset;<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>recover\" ) ; } # endif } <S2SV_StartBug> if ( ( dataofs + s < dataofs ) || ( dataofs + s < s ) || <S2SV_EndBug> ( dataofs + s > buf_size ) ) { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteOlympus\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) ( dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( en -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteOlympus\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs , s ) ; } ++ tcount ; } n -> count = tcount ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( CHECKOVERFLOW ( o2 , buf_size , 10 <S2SV_ModEnd> ) ) { <S2SV_ModStart> ; if ( CHECKOVERFLOW ( o2 , buf_size , 4 <S2SV_ModEnd> ) ) return <S2SV_ModStart> ; if ( CHECKOVERFLOW ( o2 , buf_size , 12 <S2SV_ModEnd> ) ) return <S2SV_ModStart> } if ( CHECKOVERFLOW ( o2 , buf_size , 2 <S2SV_ModEnd> ) ) { <S2SV_ModStart> ; if ( CHECKOVERFLOW ( o , buf_size , 12 ) ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; break ; } n -> entries [ tcount ] . tag = exif_get_short ( buf + o , n -> order ) + base ; n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; n -> entries [ tcount ] . order = n -> order ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteOlympus\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_olympus_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; if ( exif_format_get_size ( n -> entries [ tcount ] . format ) && buf_size / exif_format_get_size ( n -> entries [ tcount ] . format ) < n -> entries [ tcount ] . components <S2SV_ModEnd> ) { exif_log <S2SV_ModStart> , \"ExifMnoteOlympus\" , \"Tag<S2SV_blank>size<S2SV_blank>overflow<S2SV_blank>detected<S2SV_blank>(%u<S2SV_blank>*<S2SV_blank>%lu)\" , exif_format_get_size ( <S2SV_ModEnd> n -> entries <S2SV_ModStart> ] . format ) , <S2SV_ModEnd> n -> entries <S2SV_ModStart> ] . components ) ; continue ; } <S2SV_ModEnd> s = exif_format_get_size <S2SV_ModStart> if ( dataofs > ( buf_size - s ) <S2SV_ModEnd> && n -> <S2SV_ModStart> } if ( CHECKOVERFLOW ( dataofs , buf_size , s ) ) { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteOlympus\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) ( dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( en -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteOlympus\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs , s <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void record_and_restart ( struct perf_event * event , unsigned long val , <S2SV_StartBug> struct pt_regs * regs , int nmi ) <S2SV_EndBug> { u64 period = event -> hw . sample_period ; s64 prev , delta , left ; int record = 0 ; if ( event -> hw . state & PERF_HES_STOPPED ) { write_pmc ( event -> hw . idx , 0 ) ; return ; } prev = local64_read ( & event -> hw . prev_count ) ; delta = ( val - prev ) & 0xfffffffful ; local64_add ( delta , & event -> count ) ; val = 0 ; left = local64_read ( & event -> hw . period_left ) - delta ; if ( period ) { if ( left <= 0 ) { left += period ; if ( left <= 0 ) left = period ; record = 1 ; event -> hw . last_period = event -> hw . sample_period ; } if ( left < 0x80000000LL ) val = 0x80000000LL - left ; } write_pmc ( event -> hw . idx , val ) ; local64_set ( & event -> hw . prev_count , val ) ; local64_set ( & event -> hw . period_left , left ) ; perf_event_update_userpage ( event ) ; if ( record ) { struct perf_sample_data data ; perf_sample_data_init ( & data , 0 ) ; data . period = event -> hw . last_period ; <S2SV_StartBug> if ( perf_event_overflow ( event , nmi , & data , regs ) ) <S2SV_EndBug> fsl_emb_pmu_stop ( event , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pt_regs * regs <S2SV_ModEnd> ) { u64 <S2SV_ModStart> ( event , <S2SV_ModEnd> & data ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18222\n\n```\nCWE-119 static int hns_xgmac_get_sset_count ( int stringset ) { <S2SV_StartBug> if ( stringset == ETH_SS_STATS ) <S2SV_EndBug> return ARRAY_SIZE ( g_xgmac_stats_string ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stringset == ETH_SS_STATS || stringset == ETH_SS_PRIV_FLAGS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1065\n\n```\nCWE-476 unsigned int ip6t_do_table ( struct sk_buff * skb , const struct nf_hook_state * state , struct xt_table * table ) { unsigned int hook = state -> hook ; static const char nulldevname [ IFNAMSIZ ] __attribute__ ( ( aligned ( sizeof ( long ) ) ) ) ; unsigned int verdict = NF_DROP ; const char * indev , * outdev ; const void * table_base ; struct ip6t_entry * e , * * jumpstack ; unsigned int stackidx , cpu ; const struct xt_table_info * private ; struct xt_action_param acpar ; unsigned int addend ; stackidx = 0 ; indev = state -> in ? state -> in -> name : nulldevname ; outdev = state -> out ? state -> out -> name : nulldevname ; acpar . hotdrop = false ; acpar . state = state ; WARN_ON ( ! ( table -> valid_hooks & ( 1 << hook ) ) ) ; local_bh_disable ( ) ; addend = xt_write_recseq_begin ( ) ; private = READ_ONCE ( table -> private ) ; cpu = smp_processor_id ( ) ; table_base = private -> entries ; jumpstack = ( struct ip6t_entry * * ) private -> jumpstack [ cpu ] ; if ( static_key_false ( & xt_tee_enabled ) ) jumpstack += private -> stacksize * __this_cpu_read ( nf_skb_duplicated ) ; e = get_entry ( table_base , private -> hook_entry [ hook ] ) ; do { const struct xt_entry_target * t ; const struct xt_entry_match * ematch ; struct xt_counters * counter ; WARN_ON ( ! e ) ; acpar . thoff = 0 ; if ( ! ip6_packet_match ( skb , indev , outdev , & e -> ipv6 , & acpar . thoff , & acpar . fragoff , & acpar . hotdrop ) ) { no_match : e = ip6t_next_entry ( e ) ; continue ; } xt_ematch_foreach ( ematch , e ) { acpar . match = ematch -> u . kernel . match ; acpar . matchinfo = ematch -> data ; if ( ! acpar . match -> match ( skb , & acpar ) ) goto no_match ; } counter = xt_get_this_cpu_counter ( & e -> counters ) ; ADD_COUNTER ( * counter , skb -> len , 1 ) ; t = ip6t_get_target_c ( e ) ; WARN_ON ( ! t -> u . kernel . target ) ; # if IS_ENABLED ( CONFIG_NETFILTER_XT_TARGET_TRACE ) if ( unlikely ( skb -> nf_trace ) ) trace_packet ( state -> net , skb , hook , state -> in , state -> out , table -> name , private , e ) ; # endif if ( ! t -> u . kernel . target -> target ) { int v ; v = ( ( struct xt_standard_target * ) t ) -> verdict ; if ( v < 0 ) { if ( v != XT_RETURN ) { verdict = ( unsigned int ) ( - v ) - 1 ; break ; } if ( stackidx == 0 ) e = get_entry ( table_base , private -> underflow [ hook ] ) ; else e = ip6t_next_entry ( jumpstack [ -- stackidx ] ) ; continue ; } if ( table_base + v != ip6t_next_entry ( e ) && ! ( e -> ipv6 . flags & IP6T_F_GOTO ) ) { <S2SV_StartBug> jumpstack [ stackidx ++ ] = e ; <S2SV_EndBug> } e = get_entry ( table_base , v ) ; continue ; } acpar . target = t -> u . kernel . target ; acpar . targinfo = t -> data ; verdict = t -> u . kernel . target -> target ( skb , & acpar ) ; if ( verdict == XT_CONTINUE ) e = ip6t_next_entry ( e ) ; else break ; } while ( ! acpar . hotdrop ) ; xt_write_recseq_end ( addend ) ; local_bh_enable ( ) ; if ( acpar . hotdrop ) return NF_DROP ; else return verdict ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( unlikely ( stackidx >= private -> stacksize ) ) { verdict = NF_DROP ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2847\n\n```\nCWE-399 long pipe_fcntl ( struct file * file , unsigned int cmd , unsigned long arg ) { struct pipe_inode_info * pipe ; long ret ; pipe = get_pipe_info ( file ) ; if ( ! pipe ) return - EBADF ; __pipe_lock ( pipe ) ; switch ( cmd ) { case F_SETPIPE_SZ : { unsigned int size , nr_pages ; size = round_pipe_size ( arg ) ; nr_pages = size >> PAGE_SHIFT ; ret = - EINVAL ; if ( ! nr_pages ) goto out ; if ( ! capable ( CAP_SYS_RESOURCE ) && size > pipe_max_size ) { ret = - EPERM ; goto out ; <S2SV_StartBug> } <S2SV_EndBug> ret = pipe_set_size ( pipe , nr_pages ) ; break ; } case F_GETPIPE_SZ : ret = pipe -> buffers * PAGE_SIZE ; break ; default : ret = - EINVAL ; break ; } out : __pipe_unlock ( pipe ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ; } else if ( ( too_many_pipe_buffers_hard ( pipe -> user ) || too_many_pipe_buffers_soft ( pipe -> user ) ) && ! capable ( CAP_SYS_RESOURCE ) && ! capable ( CAP_SYS_ADMIN ) ) { ret = - EPERM ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 void WT_NoiseGenerator ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame ) { EAS_PCM * pOutputBuffer ; EAS_I32 phaseInc ; EAS_I32 tmp0 ; EAS_I32 tmp1 ; EAS_I32 nInterpolatedSample ; EAS_I32 numSamples ; <S2SV_StartBug> numSamples = pWTIntFrame -> numSamples ; <S2SV_EndBug> pOutputBuffer = pWTIntFrame -> pAudioBuffer ; phaseInc = pWTIntFrame -> frame . phaseIncrement ; tmp0 = ( EAS_I32 ) ( pWTVoice -> phaseAccum ) >> 18 ; tmp1 = ( EAS_I32 ) ( pWTVoice -> loopEnd ) >> 18 ; while ( numSamples -- ) { nInterpolatedSample = MULT_AUDIO_COEF ( tmp0 , ( PHASE_ONE - pWTVoice -> phaseFrac ) ) ; nInterpolatedSample += MULT_AUDIO_COEF ( tmp1 , pWTVoice -> phaseFrac ) ; * pOutputBuffer ++ = ( EAS_PCM ) nInterpolatedSample ; pWTVoice -> phaseFrac += ( EAS_U32 ) phaseInc ; if ( GET_PHASE_INT_PART ( pWTVoice -> phaseFrac ) ) { tmp0 = tmp1 ; pWTVoice -> phaseAccum = pWTVoice -> loopEnd ; pWTVoice -> loopEnd = ( 5 * pWTVoice -> loopEnd + 1 ) ; tmp1 = ( EAS_I32 ) ( pWTVoice -> loopEnd ) >> 18 ; pWTVoice -> phaseFrac = GET_PHASE_FRAC_PART ( pWTVoice -> phaseFrac ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> numSamples ; if ( numSamples <= 0 ) { ALOGE ( \"b/26366256\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5329\n\n```\nCWE-399 long video_ioctl2 ( struct file * file , unsigned int cmd , unsigned long arg ) { <S2SV_StartBug> char sbuf [ 128 ] ; <S2SV_EndBug> void * mbuf = NULL ; void * parg = ( void * ) arg ; long err = - EINVAL ; bool has_array_args ; size_t array_size = 0 ; void __user * user_ptr = NULL ; void * * kernel_ptr = NULL ; if ( _IOC_DIR ( cmd ) != _IOC_NONE ) { if ( _IOC_SIZE ( cmd ) <= sizeof ( sbuf ) ) { parg = sbuf ; } else { mbuf = kmalloc ( _IOC_SIZE ( cmd ) , GFP_KERNEL ) ; if ( NULL == mbuf ) return - ENOMEM ; parg = mbuf ; } err = - EFAULT ; if ( _IOC_DIR ( cmd ) & _IOC_WRITE ) { unsigned long n = cmd_input_size ( cmd ) ; if ( copy_from_user ( parg , ( void __user * ) arg , n ) ) goto out ; if ( n < _IOC_SIZE ( cmd ) ) memset ( ( u8 * ) parg + n , 0 , _IOC_SIZE ( cmd ) - n ) ; } else { memset ( parg , 0 , _IOC_SIZE ( cmd ) ) ; } } err = check_array_args ( cmd , parg , & array_size , & user_ptr , & kernel_ptr ) ; if ( err < 0 ) goto out ; has_array_args = err ; if ( has_array_args ) { mbuf = kmalloc ( array_size , GFP_KERNEL ) ; err = - ENOMEM ; if ( NULL == mbuf ) goto out_array_args ; err = - EFAULT ; if ( copy_from_user ( mbuf , user_ptr , array_size ) ) goto out_array_args ; * kernel_ptr = mbuf ; } <S2SV_StartBug> err = __video_do_ioctl ( file , cmd , parg ) ; <S2SV_EndBug> if ( err == - ENOIOCTLCMD ) err = - EINVAL ; if ( has_array_args ) { * kernel_ptr = user_ptr ; if ( copy_to_user ( user_ptr , mbuf , array_size ) ) err = - EFAULT ; goto out_array_args ; } if ( err < 0 ) goto out ; out_array_args : switch ( _IOC_DIR ( cmd ) ) { case _IOC_READ : case ( _IOC_WRITE | _IOC_READ ) : if ( copy_to_user ( ( void __user * ) arg , parg , _IOC_SIZE ( cmd ) ) ) err = - EFAULT ; break ; } out : kfree ( mbuf ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg ) { return video_usercopy <S2SV_ModEnd> ( file , <S2SV_ModStart> , cmd , arg , __video_do_ioctl ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 DH * get_dh2048 ( void ) { static unsigned char dhp_2048 [ ] = { <S2SV_StartBug> 0xD5 , 0x75 , 0xF1 , 0x23 , 0xC1 , 0x81 , 0x4B , 0x44 , 0x23 , 0xBE , <S2SV_EndBug> 0x97 , 0x81 , 0x7A , 0xDA , 0x97 , 0x1F , 0x1F , 0x0D , 0xD5 , 0xEC , <S2SV_StartBug> 0xC5 , 0x5F , 0x86 , 0x42 , 0x7F , 0x38 , 0xA3 , 0x95 , 0xEE , 0xA0 , <S2SV_EndBug> 0x52 , 0x2C , 0xB7 , 0x20 , 0x29 , 0xC1 , 0xC7 , 0xE6 , 0x8E , 0x6F , 0xE5 , 0xC1 , 0x0D , 0xDD , 0x8A , 0xEF , 0x8D , 0xE7 , 0xA8 , 0x63 , 0xB4 , 0xF7 , 0x58 , 0x32 , 0x0E , 0x24 , 0xAC , 0x30 , 0x94 , 0xF5 , 0xC7 , 0x02 , 0x81 , 0x1B , 0xC7 , 0x68 , 0xE5 , 0x71 , 0xD7 , 0x1E , 0x3D , 0xE4 , 0x2E , 0x2F , 0xC0 , 0x0A , 0xED , 0x34 , 0xAC , 0xC0 , 0x1F , 0x0A , 0x56 , 0xA4 , 0x12 , 0x02 , 0xFD , 0x68 , 0xD2 , 0x4D , 0x5E , 0x0A , 0x5D , 0x78 , 0xE3 , 0xA0 , 0x85 , 0x75 , 0xD2 , 0xA9 , 0xC1 , 0xF2 , 0xAD , 0x65 , 0x11 , 0xDE , 0xE8 , 0x05 , 0x68 , 0x36 , 0x4C , 0x92 , 0x99 , 0x21 , 0xB9 , 0x69 , 0xD0 , 0x6F , 0xD8 , 0xA3 , 0xEA , 0x35 , 0x13 , 0x93 , 0xDC , 0x1B , 0x13 , 0x16 , 0xB2 , 0x15 , 0x8E , 0x10 , 0x22 , 0xCE , 0x01 , 0x1F , 0x1C , 0x09 , 0x86 , 0xD5 , 0xE7 , 0xCB , 0xCF , 0xFA , 0xED , 0x2F , 0xE2 , 0x3A , 0x65 , 0x14 , 0xC9 , 0xFA , 0x70 , 0x99 , 0xF7 , 0xE0 , 0x30 , 0xBF , 0x7F , 0xEA , 0x84 , 0x14 , 0x8A , 0x51 , 0xC9 , 0xE9 , 0x85 , 0x73 , 0x7F , 0xA1 , 0xB0 , 0xC3 , 0x33 , 0x9A , 0xAB , 0x69 , 0x4E , 0x75 , 0xFB , 0x12 , 0xB0 , 0x9E , 0xB1 , 0xD9 , 0xD1 , 0xB9 , 0x32 , 0x1D , 0xC6 , 0xD9 , 0x2C , 0xAA , 0xB0 , 0xC5 , 0x3E , 0x69 , 0x56 , 0xA2 , 0xB3 , 0xA2 , 0x81 , 0xCA , 0x9D , 0x77 , 0xBB , 0x52 , 0x44 , 0xA2 , 0xED , 0xE0 , 0xF0 , 0x2A , 0x81 , 0x85 , 0x90 , 0xB6 , 0x04 , 0x60 , 0xEB , 0x09 , 0x72 , 0x08 , 0x44 , 0xAF , 0x28 , 0xF5 , 0x15 , 0x34 , 0x87 , 0x5C , 0x8A , 0xB4 , 0x5B , 0x15 , 0x6A , 0xAD , 0x27 , 0x4E , 0xA0 , 0xDE , 0x99 , 0x22 , 0xCF , 0xAB , 0x4C , 0xFD , 0x75 , 0x10 , 0x5D , 0xFF , 0xE8 , 0x81 , 0x50 , 0xC4 , 0xC0 , 0x4B } ; static unsigned char dhg_2048 [ ] = { 0x02 } ; DH * dh = DH_new ( ) ; BIGNUM * p , * g ; if ( dh == NULL ) return NULL ; p = BN_bin2bn ( dhp_2048 , sizeof ( dhp_2048 ) , NULL ) ; g = BN_bin2bn ( dhg_2048 , sizeof ( dhg_2048 ) , NULL ) ; if ( p == NULL || g == NULL || ! DH_set0_pqg ( dh , p , NULL , g ) ) { DH_free ( dh ) ; BN_free ( p ) ; BN_free ( g ) ; return NULL ; } return dh ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] = { 0xCF , 0x9F , 0x3A , 0x9C , 0xC5 , 0xA5 , 0x89 , 0x27 , 0x6D , 0x2C , 0x2C , 0xF3 , 0xA6 , 0x00 , 0xD2 , 0x7C , 0xEA , 0xFA , 0xF2 , 0x43 , 0x4F , 0x49 , 0x0A , 0xFC , 0xA6 , 0xE7 , 0x75 , 0xCA , 0x07 , 0xDC , 0xA5 , 0xF2 , 0x83 , 0x4E , 0x5A , 0xA0 , 0xA0 , 0xF5 , 0x9C , 0xFD , 0x02 , 0xE6 , 0x9E , 0xFC , 0x01 , 0x59 , 0xD7 , 0xB6 , 0xC1 , 0x4E , 0xC0 , 0xB6 , 0x71 , 0x49 , 0xF0 , 0xC7 , 0xD5 , 0x2F , 0x8D , 0xDF , 0xD3 , 0xF1 , 0x82 , 0x82 , 0x23 , 0x33 , 0x13 , 0x93 , 0xEB , 0x50 , 0x29 , 0xFD , 0x1B , 0x5A , 0x2F , 0xD5 , 0x08 , 0x99 , 0x64 , 0xE9 , 0x7B , 0x1A , 0xDD , 0x68 , 0x16 , 0x08 , 0xD0 , 0x13 , 0x82 , 0xB6 , 0x86 , 0x62 , 0x76 , 0xAA , 0x16 , 0x14 , 0xCC , 0x86 , 0x72 , 0x26 , 0x45 , 0x8E , 0x2A , 0x82 , 0x5B , 0x6F , 0xC1 , 0xDF , 0xAA , 0x18 , 0x43 , 0xB8 , 0xAD , 0x84 , 0x52 , 0xF2 , 0xD9 , 0x9C , 0xC0 , 0x47 , 0x52 , 0x1B , 0x8E , 0x42 , 0xC4 , 0xD3 , 0x61 , 0x7B , 0x65 , 0xA7 , 0x69 , 0x03 , 0xB5 , 0xD4 , 0x6C , 0x83 , 0x6A , 0x46 , 0x73 , 0xAF , 0x76 , 0x77 , 0x70 , 0xC2 , 0xD0 , 0x74 , 0xFE , 0x78 , 0xF5 , 0x75 , 0x3B , 0xCE , 0xE2 , 0xB6 , 0xA0 , 0x25 , 0xE9 , 0xE8 , 0x4B , 0xA2 , 0xF1 , 0x20 , 0x88 , 0x13 , 0x07 , 0xED , 0x66 , 0xBC , 0x46 , 0xA1 , 0xB3 , 0x44 , 0xAF , 0x2C , 0xED , 0x73 , 0x75 , 0x3D , 0x14 , 0x6E , 0x43 , 0x92 , 0x40 , 0x99 , 0xB0 , 0xD1 , 0xBF , 0x2C , 0x4D , 0x0F , 0x2A , 0x63 , 0xF4 , 0x85 , 0x7B , 0x1B , 0x0E , 0x48 , 0x5A , 0x06 , 0x02 , 0xA6 , 0x3D , 0x9E , 0x78 , 0x05 , 0xA8 , 0x7C , 0xAD , 0x54 , 0x49 , 0xDE , 0x7A , 0xE6 , 0x36 , 0x5C , 0x50 , 0xFC , 0x09 <S2SV_ModEnd> , 0x81 , <S2SV_ModStart> , 0x81 , 0x9E , 0x83 , 0x53 , 0x8C <S2SV_ModEnd> , 0x42 , <S2SV_ModStart> , 0x42 , 0xEF , 0x12 , 0x36 , 0x4F , 0x22 , 0x16 , 0x2A , 0x15 , 0x88 , 0x83 , 0xA9 , 0x00 , 0x66 , 0x9E , 0xD1 , 0xDC , 0x0F , 0x54 , 0xC0 , 0x32 , 0x5C , 0x4C , 0x5E , 0xE2 , 0x3D , 0xBC , 0x56 , 0x89 , 0x75 , 0x28 , 0xA3 <S2SV_ModEnd> } ; static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> static char * print_string_ptr ( const char * str ) <S2SV_EndBug> { const char * ptr ; <S2SV_StartBug> char * ptr2 , * out ; <S2SV_EndBug> <S2SV_StartBug> int len = 0 ; <S2SV_EndBug> unsigned char token ; if ( ! str ) <S2SV_StartBug> return cJSON_strdup ( \"\" ) ; <S2SV_EndBug> ptr = str ; while ( ( token = * ptr ) && ++ len ) { if ( strchr ( \"\\\\\"\\\\\\\\\\\\b\\\\f\\\\n\\\\r\\\\t\" , token ) ) <S2SV_StartBug> ++ len ; <S2SV_EndBug> else if ( token < 32 ) len += 5 ; <S2SV_StartBug> ++ ptr ; <S2SV_EndBug> } <S2SV_StartBug> if ( ! ( out = ( char * ) cJSON_malloc ( len + 3 ) ) ) <S2SV_EndBug> return 0 ; ptr2 = out ; ptr = str ; * ptr2 ++ = \\'\\\\\"\\' ; while ( * ptr ) { if ( ( unsigned char ) * ptr > 31 && * ptr != \\'\\\\\"\\' && * ptr != '\\\\\\\\' ) * ptr2 ++ = * ptr ++ ; else { * ptr2 ++ = '\\\\\\\\' ; switch ( token = * ptr ++ ) { case '\\\\\\\\' : * ptr2 ++ = '\\\\\\\\' ; break ; case \\'\\\\\"\\' : * ptr2 ++ = \\'\\\\\"\\' ; break ; case '\\\\b' : * ptr2 ++ = 'b' ; break ; case '\\\\f' : * ptr2 ++ = 'f' ; break ; case '\\\\n' : * ptr2 ++ = 'n' ; break ; case '\\\\r' : * ptr2 ++ = 'r' ; break ; case '\\\\t' : * ptr2 ++ = 't' ; break ; default : sprintf ( ptr2 , \"u%04x\" , token ) ; ptr2 += 5 ; <S2SV_StartBug> break ; <S2SV_EndBug> } } } * ptr2 ++ = \\'\\\\\"\\' ; * ptr2 ++ = 0 ; return out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * str , printbuffer * p <S2SV_ModStart> * ptr ; char * ptr2 , * out ; <S2SV_ModEnd> int len = <S2SV_ModStart> len = 0 , flag = 0 ; <S2SV_ModEnd> unsigned char token <S2SV_ModStart> ! str ) { if ( p ) out = ensure ( p , 3 ) ; else out = ( char * ) cJSON_malloc ( 3 ) ; if ( ! out ) return 0 ; strcpy ( out , \"\\\\\"\\\\\"\" ) ; return out ; } for ( ptr = str ; * ptr ; ptr ++ ) flag |= ( ( * ptr > 0 && * ptr < 32 ) || ( * ptr == \\'\\\\\"\\' ) || ( * ptr == '\\\\\\\\' ) ) ? 1 : 0 ; if ( ! flag ) { len = ptr - str ; if ( p ) out = ensure ( p , len + 3 ) ; else out = ( char * ) cJSON_malloc ( len + 3 ) ; if ( ! out ) return 0 ; ptr2 = out ; * ptr2 ++ = \\'\\\\\"\\' ; strcpy ( ptr2 , str ) ; ptr2 [ len ] = \\'\\\\\"\\' ; ptr2 [ len + 1 ] = 0 ; return out ; } ptr = str ; <S2SV_ModEnd> while ( ( <S2SV_ModStart> token ) ) len ++ ; <S2SV_ModEnd> else if ( <S2SV_ModStart> += 5 ; ptr ++ ; } if ( p ) out = ensure ( p , <S2SV_ModEnd> len + 3 <S2SV_ModStart> + 3 ) ; else out = ( char * ) cJSON_malloc ( len + 3 ) ; if ( ! out ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> += 5 ; break ; } } } * ptr2 ++ = \\'\\\\\"\\' ; <S2SV_ModEnd> * ptr2 ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 IMPEG2D_ERROR_CODES_T impeg2d_dec_d_slice ( dec_state_t * ps_dec ) { UWORD32 i ; yuv_buf_t * ps_cur_frm_buf = & ps_dec -> s_cur_frm_buf ; stream_t * ps_stream = & ps_dec -> s_bit_stream ; UWORD8 * pu1_vld_buf ; WORD16 i2_dc_diff ; UWORD32 u4_frame_width = ps_dec -> u2_frame_width ; UWORD32 u4_frm_offset = 0 ; if ( ps_dec -> u2_picture_structure != FRAME_PICTURE ) { u4_frame_width <<= 1 ; if ( ps_dec -> u2_picture_structure == BOTTOM_FIELD ) { u4_frm_offset = ps_dec -> u2_frame_width ; } } do { UWORD32 u4_x_offset , u4_y_offset ; UWORD32 u4_blk_pos ; WORD16 i2_dc_val ; UWORD32 u4_dst_x_offset = u4_frm_offset + ( ps_dec -> u2_mb_x << 4 ) ; UWORD32 u4_dst_y_offset = ( ps_dec -> u2_mb_y << 4 ) * u4_frame_width ; UWORD8 * pu1_vld_buf8 = ps_cur_frm_buf -> pu1_y + u4_dst_x_offset + u4_dst_y_offset ; UWORD32 u4_dst_wd = u4_frame_width ; <S2SV_StartBug> while ( impeg2d_bit_stream_nxt ( ps_stream , MB_STUFFING_CODE_LEN ) == MB_STUFFING_CODE ) <S2SV_EndBug> impeg2d_bit_stream_flush ( ps_stream , MB_STUFFING_CODE_LEN ) ; impeg2d_bit_stream_flush ( ps_stream , 1 ) ; if ( impeg2d_bit_stream_get ( ps_stream , 1 ) != 0x01 ) { } for ( i = 0 ; i < NUM_LUMA_BLKS ; ++ i ) { u4_x_offset = gai2_impeg2_blk_x_off [ i ] ; u4_y_offset = gai2_impeg2_blk_y_off_frm [ i ] ; u4_blk_pos = ( u4_y_offset * u4_dst_wd ) + u4_x_offset ; pu1_vld_buf = pu1_vld_buf8 + u4_blk_pos ; i2_dc_diff = impeg2d_get_luma_dc_diff ( ps_stream ) ; i2_dc_val = ps_dec -> u2_def_dc_pred [ Y_LUMA ] + i2_dc_diff ; ps_dec -> u2_def_dc_pred [ Y_LUMA ] = i2_dc_val ; i2_dc_val = CLIP_U8 ( i2_dc_val ) ; ps_dec -> pf_memset_8bit_8x8_block ( pu1_vld_buf , i2_dc_val , u4_dst_wd ) ; } u4_dst_x_offset >>= 1 ; u4_dst_y_offset >>= 2 ; u4_dst_wd >>= 1 ; pu1_vld_buf = ps_cur_frm_buf -> pu1_u + u4_dst_x_offset + u4_dst_y_offset ; i2_dc_diff = impeg2d_get_chroma_dc_diff ( ps_stream ) ; i2_dc_val = ps_dec -> u2_def_dc_pred [ U_CHROMA ] + i2_dc_diff ; ps_dec -> u2_def_dc_pred [ U_CHROMA ] = i2_dc_val ; i2_dc_val = CLIP_U8 ( i2_dc_val ) ; ps_dec -> pf_memset_8bit_8x8_block ( pu1_vld_buf , i2_dc_val , u4_dst_wd ) ; pu1_vld_buf = ps_cur_frm_buf -> pu1_v + u4_dst_x_offset + u4_dst_y_offset ; i2_dc_diff = impeg2d_get_chroma_dc_diff ( ps_stream ) ; i2_dc_val = ps_dec -> u2_def_dc_pred [ V_CHROMA ] + i2_dc_diff ; ps_dec -> u2_def_dc_pred [ V_CHROMA ] = i2_dc_val ; i2_dc_val = CLIP_U8 ( i2_dc_val ) ; ps_dec -> pf_memset_8bit_8x8_block ( pu1_vld_buf , i2_dc_val , u4_dst_wd ) ; ps_dec -> u2_num_mbs_left -- ; ps_dec -> u2_mb_x ++ ; if ( ps_dec -> s_bit_stream . u4_offset > ps_dec -> s_bit_stream . u4_max_offset ) { return IMPEG2D_BITSTREAM_BUFF_EXCEEDED_ERR ; } else if ( ps_dec -> u2_mb_x == ps_dec -> u2_num_horiz_mb ) { ps_dec -> u2_mb_x = 0 ; ps_dec -> u2_mb_y ++ ; } impeg2d_bit_stream_flush ( ps_stream , 1 ) ; } while ( ps_dec -> u2_num_mbs_left != 0 && impeg2d_bit_stream_nxt ( & ps_dec -> s_bit_stream , 23 ) != 0x0 ) ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) == MB_STUFFING_CODE && ps_stream -> u4_offset < ps_stream -> u4_max_offset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6308\n\n```\nCWE-190 void * checked_xcalloc ( size_t num , size_t size ) { <S2SV_StartBug> alloc_limit_assert ( \"checked_xcalloc\" , ( num * size ) ) ; <S2SV_EndBug> return xcalloc ( num , size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) { size_t res ; if ( check_mul_overflow ( num , size , & res ) ) abort ( ) ; <S2SV_ModStart> \"checked_xcalloc\" , ( res <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-120 static char * rfc2047_decode_word ( const char * s , size_t len , enum ContentEncoding enc ) { const char * it = s ; const char * end = s + len ; if ( enc == ENCQUOTEDPRINTABLE ) { struct Buffer buf = { 0 } ; for ( ; it < end ; ++ it ) { if ( * it == '_' ) { mutt_buffer_addch ( & buf , '<S2SV_blank>' ) ; } else if ( ( * it == '=' ) && ( ! ( it [ 1 ] & ~ 127 ) && hexval ( it [ 1 ] ) != - 1 ) && ( ! ( it [ 2 ] & ~ 127 ) && hexval ( it [ 2 ] ) != - 1 ) ) { mutt_buffer_addch ( & buf , ( hexval ( it [ 1 ] ) << 4 ) | hexval ( it [ 2 ] ) ) ; it += 2 ; } else { mutt_buffer_addch ( & buf , * it ) ; } } mutt_buffer_addch ( & buf , '\\\\0' ) ; return buf . data ; } else if ( enc == ENCBASE64 ) { <S2SV_StartBug> char * out = mutt_mem_malloc ( 3 * len / 4 + 1 ) ; <S2SV_EndBug> <S2SV_StartBug> int dlen = mutt_b64_decode ( out , it ) ; <S2SV_EndBug> if ( dlen == - 1 ) { FREE ( & out ) ; return NULL ; } out [ dlen ] = '\\\\0' ; return out ; } assert ( 0 ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ENCBASE64 ) { const int olen = <S2SV_ModEnd> 3 * len <S2SV_ModStart> 4 + 1 ; char * out = mutt_mem_malloc ( olen <S2SV_ModStart> out , it , olen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _hostsock_sendto ( oe_fd_t * sock_ , const void * buf , size_t count , int flags , const struct oe_sockaddr * dest_addr , oe_socklen_t addrlen ) { ssize_t ret = - 1 ; sock_t * sock = _cast_sock ( sock_ ) ; oe_errno = 0 ; <S2SV_StartBug> if ( ! sock || ( count && ! buf ) ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( oe_syscall_sendto_ocall ( & ret , sock -> host_fd , buf , count , flags , ( struct oe_sockaddr * ) dest_addr , addrlen ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> done : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! buf ) || count > OE_SSIZE_MAX <S2SV_ModStart> ) ; } if ( ret > ( ssize_t ) count ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-78 static void cmd_parse_lsub ( struct ImapData * idata , char * s ) { char buf [ STRING ] ; char errstr [ STRING ] ; struct Buffer err , token ; struct Url url ; struct ImapList list ; if ( idata -> cmddata && idata -> cmdtype == IMAP_CT_LIST ) { cmd_parse_list ( idata , s ) ; return ; } if ( ! ImapCheckSubscribed ) return ; idata -> cmdtype = IMAP_CT_LIST ; idata -> cmddata = & list ; cmd_parse_list ( idata , s ) ; idata -> cmddata = NULL ; if ( ! list . name || list . noselect ) return ; mutt_debug ( 3 , \"Subscribing<S2SV_blank>to<S2SV_blank>%s\\\\n\" , list . name ) ; mutt_str_strfcpy ( buf , \"mailboxes<S2SV_blank>\\\\\"\" , sizeof ( buf ) ) ; mutt_account_tourl ( & idata -> conn -> account , & url ) ; <S2SV_StartBug> imap_quote_string ( errstr , sizeof ( errstr ) , list . name ) ; <S2SV_EndBug> url . path = errstr + 1 ; url . path [ strlen ( url . path ) - 1 ] = '\\\\0' ; if ( mutt_str_strcmp ( url . user , ImapUser ) == 0 ) url . user = NULL ; url_tostring ( & url , buf + 11 , sizeof ( buf ) - 11 , 0 ) ; mutt_str_strcat ( buf , sizeof ( buf ) , \"\\\\\"\" ) ; mutt_buffer_init ( & token ) ; mutt_buffer_init ( & err ) ; err . data = errstr ; err . dsize = sizeof ( errstr ) ; if ( mutt_parse_rc_line ( buf , & token , & err ) ) mutt_debug ( 1 , \"Error<S2SV_blank>adding<S2SV_blank>subscribed<S2SV_blank>mailbox:<S2SV_blank>%s\\\\n\" , errstr ) ; FREE ( & token . data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> list . name , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17052\n\n```\nCWE-416 static struct mm_struct * mm_init ( struct mm_struct * mm , struct task_struct * p , struct user_namespace * user_ns ) { mm -> mmap = NULL ; mm -> mm_rb = RB_ROOT ; mm -> vmacache_seqnum = 0 ; atomic_set ( & mm -> mm_users , 1 ) ; atomic_set ( & mm -> mm_count , 1 ) ; init_rwsem ( & mm -> mmap_sem ) ; INIT_LIST_HEAD ( & mm -> mmlist ) ; mm -> core_state = NULL ; atomic_long_set ( & mm -> nr_ptes , 0 ) ; mm_nr_pmds_init ( mm ) ; mm -> map_count = 0 ; mm -> locked_vm = 0 ; mm -> pinned_vm = 0 ; memset ( & mm -> rss_stat , 0 , sizeof ( mm -> rss_stat ) ) ; spin_lock_init ( & mm -> page_table_lock ) ; mm_init_cpumask ( mm ) ; mm_init_aio ( mm ) ; mm_init_owner ( mm , p ) ; <S2SV_StartBug> mmu_notifier_mm_init ( mm ) ; <S2SV_EndBug> init_tlb_flush_pending ( mm ) ; # if defined ( CONFIG_TRANSPARENT_HUGEPAGE ) && ! USE_SPLIT_PMD_PTLOCKS mm -> pmd_huge_pte = NULL ; # endif if ( current -> mm ) { mm -> flags = current -> mm -> flags & MMF_INIT_MASK ; mm -> def_flags = current -> mm -> def_flags & VM_INIT_DEF_MASK ; } else { mm -> flags = default_dump_filter ; mm -> def_flags = 0 ; } if ( mm_alloc_pgd ( mm ) ) goto fail_nopgd ; if ( init_new_context ( p , mm ) ) goto fail_nocontext ; mm -> user_ns = get_user_ns ( user_ns ) ; return mm ; fail_nocontext : mm_free_pgd ( mm ) ; fail_nopgd : free_mm ( mm ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p ) ; RCU_INIT_POINTER ( mm -> exe_file , NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_init_quantizer ( VP9_COMP * cpi ) { VP9_COMMON * const cm = & cpi -> common ; QUANTS * const quants = & cpi -> quants ; int i , q , quant ; for ( q = 0 ; q < QINDEX_RANGE ; q ++ ) { <S2SV_StartBug> const int qzbin_factor = q == 0 ? 64 : ( vp9_dc_quant ( q , 0 ) < 148 ? 84 : 80 ) ; <S2SV_EndBug> const int qrounding_factor = q == 0 ? 64 : 48 ; for ( i = 0 ; i < 2 ; ++ i ) { <S2SV_StartBug> quant = i == 0 ? vp9_dc_quant ( q , cm -> y_dc_delta_q ) <S2SV_EndBug> <S2SV_StartBug> : vp9_ac_quant ( q , 0 ) ; <S2SV_EndBug> invert_quant ( & quants -> y_quant [ q ] [ i ] , & quants -> y_quant_shift [ q ] [ i ] , quant ) ; <S2SV_StartBug> quants -> y_zbin [ q ] [ i ] = ROUND_POWER_OF_TWO ( qzbin_factor * quant , 7 ) ; <S2SV_EndBug> quants -> y_round [ q ] [ i ] = ( qrounding_factor * quant ) >> 7 ; <S2SV_StartBug> cm -> y_dequant [ q ] [ i ] = quant ; <S2SV_EndBug> <S2SV_StartBug> quant = i == 0 ? vp9_dc_quant ( q , cm -> uv_dc_delta_q ) <S2SV_EndBug> <S2SV_StartBug> : vp9_ac_quant ( q , cm -> uv_ac_delta_q ) ; <S2SV_EndBug> invert_quant ( & quants -> uv_quant [ q ] [ i ] , & quants -> uv_quant_shift [ q ] [ i ] , quant ) ; <S2SV_StartBug> quants -> uv_zbin [ q ] [ i ] = ROUND_POWER_OF_TWO ( qzbin_factor * quant , 7 ) ; <S2SV_EndBug> quants -> uv_round [ q ] [ i ] = ( qrounding_factor * quant ) >> 7 ; <S2SV_StartBug> cm -> uv_dequant [ q ] [ i ] = quant ; <S2SV_EndBug> # if CONFIG_ALPHA quant = i == 0 ? vp9_dc_quant ( q , cm -> a_dc_delta_q ) : vp9_ac_quant ( q , cm -> a_ac_delta_q ) ; invert_quant ( & quants -> a_quant [ q ] [ i ] , & quants -> a_quant_shift [ q ] [ i ] , quant ) ; quants -> a_zbin [ q ] [ i ] = ROUND_POWER_OF_TWO ( qzbin_factor * quant , 7 ) ; <S2SV_StartBug> quants -> a_round [ q ] [ i ] = ( qrounding_factor * quant ) >> 7 ; <S2SV_EndBug> <S2SV_StartBug> cm -> a_dequant [ q ] [ i ] = quant ; <S2SV_EndBug> # endif } for ( i = 2 ; i < 8 ; i ++ ) { quants -> y_quant [ q ] [ i ] = quants -> y_quant [ q ] [ 1 ] ; <S2SV_StartBug> quants -> y_quant_shift [ q ] [ i ] = quants -> y_quant_shift [ q ] [ 1 ] ; <S2SV_EndBug> quants -> y_zbin [ q ] [ i ] = quants -> y_zbin [ q ] [ 1 ] ; quants -> y_round [ q ] [ i ] = quants -> y_round [ q ] [ 1 ] ; <S2SV_StartBug> cm -> y_dequant [ q ] [ i ] = cm -> y_dequant [ q ] [ 1 ] ; <S2SV_EndBug> quants -> uv_quant [ q ] [ i ] = quants -> uv_quant [ q ] [ 1 ] ; <S2SV_StartBug> quants -> uv_quant_shift [ q ] [ i ] = quants -> uv_quant_shift [ q ] [ 1 ] ; <S2SV_EndBug> quants -> uv_zbin [ q ] [ i ] = quants -> uv_zbin [ q ] [ 1 ] ; quants -> uv_round [ q ] [ i ] = quants -> uv_round [ q ] [ 1 ] ; <S2SV_StartBug> cm -> uv_dequant [ q ] [ i ] = cm -> uv_dequant [ q ] [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> # if CONFIG_ALPHA <S2SV_EndBug> quants -> a_quant [ q ] [ i ] = quants -> a_quant [ q ] [ 1 ] ; quants -> a_quant_shift [ q ] [ i ] = quants -> a_quant_shift [ q ] [ 1 ] ; quants -> a_zbin [ q ] [ i ] = quants -> a_zbin [ q ] [ 1 ] ; quants -> a_round [ q ] [ i ] = quants -> a_round [ q ] [ 1 ] ; cm -> a_dequant [ q ] [ i ] = cm -> a_dequant [ q ] [ 1 ] ; # endif } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int qzbin_factor = get_qzbin_factor ( q , cm -> bit_depth <S2SV_ModEnd> ) ; const <S2SV_ModStart> i ) { int qrounding_factor_fp = i == 0 ? 48 : 42 ; if ( q == 0 ) qrounding_factor_fp = 64 ; <S2SV_ModStart> cm -> y_dc_delta_q , cm -> bit_depth <S2SV_ModStart> q , 0 , cm -> bit_depth <S2SV_ModStart> ; quants -> y_quant_fp [ q ] [ i ] = ( 1 << 16 ) / quant ; quants -> y_round_fp [ q ] [ i ] = ( qrounding_factor_fp <S2SV_ModEnd> * quant ) <S2SV_ModStart> >> 7 ; quants -> y_zbin [ q ] [ i ] = ROUND_POWER_OF_TWO ( qzbin_factor * quant , 7 ) ; quants -> y_round [ q ] [ i ] = ( qrounding_factor * quant ) >> 7 ; cpi <S2SV_ModEnd> -> y_dequant [ <S2SV_ModStart> cm -> uv_dc_delta_q , cm -> bit_depth <S2SV_ModStart> cm -> uv_ac_delta_q , cm -> bit_depth <S2SV_ModStart> ; quants -> uv_quant_fp [ q ] [ i ] = ( 1 << 16 ) / quant ; quants -> uv_round_fp [ q ] [ i ] = ( qrounding_factor_fp <S2SV_ModEnd> * quant ) <S2SV_ModStart> >> 7 ; quants -> uv_zbin <S2SV_ModEnd> [ q ] <S2SV_ModStart> ; quants -> uv_round <S2SV_ModEnd> [ q ] <S2SV_ModStart> >> 7 ; cpi -> uv_dequant [ q ] [ i ] = quant ; <S2SV_ModEnd> } for ( <S2SV_ModStart> ; quants -> y_quant_fp [ q ] [ i ] = quants -> y_quant_fp [ q ] [ 1 ] ; quants -> y_round_fp [ q ] [ i ] = quants -> y_round_fp [ q ] [ 1 ] ; quants -> <S2SV_ModStart> 1 ] ; cpi <S2SV_ModEnd> -> y_dequant [ <S2SV_ModStart> i ] = cpi <S2SV_ModEnd> -> y_dequant [ <S2SV_ModStart> ; quants -> uv_quant_fp [ q ] [ i ] = quants -> uv_quant_fp [ q ] [ 1 ] ; quants -> uv_round_fp [ q ] [ i ] = quants -> uv_round_fp [ q ] [ 1 ] ; quants -> <S2SV_ModStart> 1 ] ; cpi <S2SV_ModEnd> -> uv_dequant [ <S2SV_ModStart> i ] = cpi <S2SV_ModEnd> -> uv_dequant [ <S2SV_ModStart> 1 ] ; <S2SV_ModEnd> } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0377\n\n```\nCWE-200 <S2SV_StartBug> static inline int <S2SV_EndBug> addrs_in_same_network_family ( const tor_addr_t * a1 , const tor_addr_t * a2 ) { return 0 == tor_addr_compare_masked ( a1 , a2 , 16 , CMP_SEMANTIC ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> int addrs_in_same_network_family (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0807\n\n```\nCWE-119 char * suhosin_encrypt_single_cookie ( char * name , int name_len , char * value , int value_len , char * key TSRMLS_DC ) { <S2SV_StartBug> char buffer [ 4096 ] ; <S2SV_EndBug> char buffer2 [ 4096 ] ; char * buf = buffer , * buf2 = buffer2 , * d , * d_url ; int l ; <S2SV_StartBug> if ( name_len > sizeof ( buffer ) - 2 ) { <S2SV_EndBug> buf = estrndup ( name , name_len ) ; <S2SV_StartBug> } else { <S2SV_EndBug> memcpy ( buf , name , name_len ) ; buf [ name_len ] = 0 ; } name_len = php_url_decode ( buf , name_len ) ; normalize_varname ( buf ) ; name_len = strlen ( buf ) ; if ( SUHOSIN_G ( cookie_plainlist ) ) { if ( zend_hash_exists ( SUHOSIN_G ( cookie_plainlist ) , buf , name_len + 1 ) ) { encrypt_return_plain : <S2SV_StartBug> if ( buf != buffer ) { <S2SV_EndBug> efree ( buf ) ; } return estrndup ( value , value_len ) ; } } else if ( SUHOSIN_G ( cookie_cryptlist ) ) { if ( ! zend_hash_exists ( SUHOSIN_G ( cookie_cryptlist ) , buf , name_len + 1 ) ) { goto encrypt_return_plain ; } } <S2SV_StartBug> if ( strlen ( value ) <= sizeof ( buffer2 ) - 2 ) { <S2SV_EndBug> memcpy ( buf2 , value , value_len ) ; buf2 [ value_len ] = 0 ; } else { buf2 = estrndup ( value , value_len ) ; } value_len = php_url_decode ( buf2 , value_len ) ; d = suhosin_encrypt_string ( buf2 , value_len , buf , name_len , key TSRMLS_CC ) ; d_url = php_url_encode ( d , strlen ( d ) , & l ) ; efree ( d ) ; <S2SV_StartBug> if ( buf != buffer ) { <S2SV_EndBug> efree ( buf ) ; } if ( buf2 != buffer2 ) { efree ( buf2 ) ; } return d_url ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { char * buf , * buf2 <S2SV_ModEnd> , * d <S2SV_ModStart> int l ; <S2SV_ModEnd> buf = estrndup <S2SV_ModStart> name_len ) ; <S2SV_ModEnd> name_len = php_url_decode <S2SV_ModStart> { encrypt_return_plain : efree ( buf ) ; <S2SV_ModEnd> return estrndup ( <S2SV_ModStart> ; } } buf2 = estrndup ( value , value_len ) ; <S2SV_ModEnd> value_len = php_url_decode <S2SV_ModStart> d ) ; efree ( buf ) ; efree ( buf2 ) ; <S2SV_ModEnd> return d_url ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14363\n\n```\nCWE-22 static int pop_fetch_message ( struct Context * ctx , struct Message * msg , int msgno ) { void * uidl = NULL ; char buf [ LONG_STRING ] ; char path [ PATH_MAX ] ; struct Progress progressbar ; struct PopData * pop_data = ( struct PopData * ) ctx -> data ; struct PopCache * cache = NULL ; struct Header * h = ctx -> hdrs [ msgno ] ; unsigned short bcache = 1 ; <S2SV_StartBug> msg -> fp = mutt_bcache_get ( pop_data -> bcache , h -> data ) ; <S2SV_EndBug> if ( msg -> fp ) return 0 ; cache = & pop_data -> cache [ h -> index % POP_CACHE_LEN ] ; if ( cache -> path ) { if ( cache -> index == h -> index ) { msg -> fp = fopen ( cache -> path , \"r\" ) ; if ( msg -> fp ) return 0 ; mutt_perror ( cache -> path ) ; return - 1 ; } else { unlink ( cache -> path ) ; FREE ( & cache -> path ) ; } } while ( true ) { if ( pop_reconnect ( ctx ) < 0 ) return - 1 ; if ( h -> refno < 0 ) { mutt_error ( _ ( \"The<S2SV_blank>message<S2SV_blank>index<S2SV_blank>is<S2SV_blank>incorrect.<S2SV_blank>Try<S2SV_blank>reopening<S2SV_blank>the<S2SV_blank>mailbox.\" ) ) ; return - 1 ; } mutt_progress_init ( & progressbar , _ ( \"Fetching<S2SV_blank>message...\" ) , MUTT_PROGRESS_SIZE , NetInc , h -> content -> length + h -> content -> offset - 1 ) ; <S2SV_StartBug> msg -> fp = mutt_bcache_put ( pop_data -> bcache , h -> data ) ; <S2SV_EndBug> if ( ! msg -> fp ) { bcache = 0 ; mutt_mktemp ( path , sizeof ( path ) ) ; msg -> fp = mutt_file_fopen ( path , \"w+\" ) ; if ( ! msg -> fp ) { mutt_perror ( path ) ; return - 1 ; } } snprintf ( buf , sizeof ( buf ) , \"RETR<S2SV_blank>%d\\\\r\\\\n\" , h -> refno ) ; const int ret = pop_fetch_data ( pop_data , buf , & progressbar , fetch_message , msg -> fp ) ; if ( ret == 0 ) break ; mutt_file_fclose ( & msg -> fp ) ; if ( ! bcache ) unlink ( path ) ; if ( ret == - 2 ) { mutt_error ( \"%s\" , pop_data -> err_msg ) ; return - 1 ; } if ( ret == - 3 ) { mutt_error ( _ ( \"Can\\'t<S2SV_blank>write<S2SV_blank>message<S2SV_blank>to<S2SV_blank>temporary<S2SV_blank>file!\" ) ) ; return - 1 ; } } if ( bcache ) <S2SV_StartBug> mutt_bcache_commit ( pop_data -> bcache , h -> data ) ; <S2SV_EndBug> else { cache -> index = h -> index ; cache -> path = mutt_str_strdup ( path ) ; } rewind ( msg -> fp ) ; uidl = h -> data ; if ( ctx -> subj_hash && h -> env -> real_subj ) mutt_hash_delete ( ctx -> subj_hash , h -> env -> real_subj , h ) ; mutt_label_hash_remove ( ctx , h ) ; mutt_env_free ( & h -> env ) ; h -> env = mutt_rfc822_read_header ( msg -> fp , h , 0 , 0 ) ; if ( ctx -> subj_hash && h -> env -> real_subj ) mutt_hash_insert ( ctx -> subj_hash , h -> env -> real_subj , h ) ; mutt_label_hash_add ( ctx , h ) ; h -> data = uidl ; h -> lines = 0 ; fgets ( buf , sizeof ( buf ) , msg -> fp ) ; while ( ! feof ( msg -> fp ) ) { ctx -> hdrs [ msgno ] -> lines ++ ; fgets ( buf , sizeof ( buf ) , msg -> fp ) ; } h -> content -> length = ftello ( msg -> fp ) - h -> content -> offset ; if ( ! WithCrypto ) h -> security = crypt_query ( h -> content ) ; mutt_clear_error ( ) ; rewind ( msg -> fp ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> bcache , cache_id ( <S2SV_ModStart> h -> data ) <S2SV_ModStart> -> bcache , cache_id ( <S2SV_ModStart> h -> data ) <S2SV_ModStart> -> bcache , cache_id ( <S2SV_ModStart> h -> data )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12990\n\n```\nCWE-835 static const u_char * ikev2_auth_print ( netdissect_options * ndo , u_char tpay , const struct isakmp_gen * ext , u_int item_len _U_ , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { struct ikev2_auth a ; const char * v2_auth [ ] = { \"invalid\" , \"rsasig\" , \"shared-secret\" , \"dsssig\" } ; const u_char * authdata = ( const u_char * ) ext + sizeof ( a ) ; unsigned int len ; ND_TCHECK ( * ext ) ; UNALIGNED_MEMCPY ( & a , ext , sizeof ( a ) ) ; ikev2_pay_print ( ndo , NPSTR ( tpay ) , a . h . critical ) ; len = ntohs ( a . h . len ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>method=%s\" , len - 4 , <S2SV_EndBug> STR_OR_ID ( a . auth_method , v2_auth ) ) ) ; <S2SV_StartBug> if ( 1 < ndo -> ndo_vflag && 4 < len ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>authdata=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) authdata , len - sizeof ( a ) ) ) goto trunc ; ND_PRINT ( ( ndo , \")<S2SV_blank>\" ) ) ; <S2SV_StartBug> } else if ( ndo -> ndo_vflag && 4 < len ) { <S2SV_EndBug> if ( ! ike_show_somedata ( ndo , authdata , ep ) ) goto trunc ; } <S2SV_StartBug> return ( const u_char * ) ext + len ; <S2SV_EndBug> trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( tpay ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"<S2SV_blank>len=%u<S2SV_blank>method=%s\" <S2SV_ModEnd> , len - <S2SV_ModStart> ; if ( len > 4 ) { if ( <S2SV_ModEnd> ndo -> ndo_vflag <S2SV_ModStart> ndo -> ndo_vflag > 1 <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> ndo -> ndo_vflag <S2SV_ModEnd> ) { if <S2SV_ModStart> trunc ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-200 void __ip_select_ident ( struct iphdr * iph , int segs ) { static u32 ip_idents_hashrnd __read_mostly ; <S2SV_StartBug> u32 hash , id ; <S2SV_EndBug> <S2SV_StartBug> net_get_random_once ( & ip_idents_hashrnd , sizeof ( ip_idents_hashrnd ) ) ; <S2SV_EndBug> hash = jhash_3words ( ( __force u32 ) iph -> daddr , ( __force u32 ) iph -> saddr , <S2SV_StartBug> iph -> protocol , <S2SV_EndBug> ip_idents_hashrnd ) ; id = ip_idents_reserve ( hash , segs ) ; iph -> id = htons ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip_idents_hashrnd __read_mostly ; static u32 ip_idents_hashrnd_extra __read_mostly ; <S2SV_ModStart> sizeof ( ip_idents_hashrnd ) ) ; net_get_random_once ( & ip_idents_hashrnd_extra , sizeof ( ip_idents_hashrnd_extra <S2SV_ModStart> iph -> protocol ^ ip_idents_hashrnd_extra\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9278\n\n```\nCWE-787 static int exif_data_load_data_entry ( ExifData * data , ExifEntry * entry , const unsigned char * d , unsigned int size , unsigned int offset ) { unsigned int s , doff ; entry -> tag = exif_get_short ( d + offset + 0 , data -> priv -> order ) ; entry -> format = exif_get_short ( d + offset + 2 , data -> priv -> order ) ; entry -> components = exif_get_long ( d + offset + 4 , data -> priv -> order ) ; exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , entry -> tag , exif_tag_get_name ( entry -> tag ) ) ; s = exif_format_get_size ( entry -> format ) * entry -> components ; if ( ( s < entry -> components ) || ( s == 0 ) ) { return 0 ; } if ( s > 4 ) doff = exif_get_long ( d + offset + 8 , data -> priv -> order ) ; else doff = offset + 8 ; <S2SV_StartBug> if ( ( doff + s < doff ) || ( doff + s < s ) || ( doff + s > size ) ) { <S2SV_EndBug> exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , <S2SV_StartBug> \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , doff + s , size ) ; <S2SV_EndBug> return 0 ; } entry -> data = exif_data_alloc ( data , s ) ; if ( entry -> data ) { entry -> size = s ; memcpy ( entry -> data , d + doff , s ) ; } else { EXIF_LOG_NO_MEMORY ( data -> priv -> log , \"ExifData\" , s ) ; return 0 ; } if ( entry -> tag == EXIF_TAG_MAKER_NOTE ) { if ( ! entry -> data ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"MakerNote<S2SV_blank>found<S2SV_blank>with<S2SV_blank>empty<S2SV_blank>data\" ) ; } else if ( entry -> size > 6 ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"MakerNote<S2SV_blank>found<S2SV_blank>(%02x<S2SV_blank>%02x<S2SV_blank>%02x<S2SV_blank>%02x<S2SV_blank>\" \"%02x<S2SV_blank>%02x<S2SV_blank>%02x...).\" , entry -> data [ 0 ] , entry -> data [ 1 ] , entry -> data [ 2 ] , entry -> data [ 3 ] , entry -> data [ 4 ] , entry -> data [ 5 ] , entry -> data [ 6 ] ) ; } data -> priv -> offset_mnote = doff ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( doff >= size ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Tag<S2SV_blank>starts<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , doff , size ) ; return 0 ; } if ( <S2SV_ModEnd> s > size <S2SV_ModStart> s > size - doff <S2SV_ModEnd> ) { exif_log <S2SV_ModStart> , \"ExifData\" , \"Tag<S2SV_blank>data<S2SV_blank>goes<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" <S2SV_ModEnd> , doff +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t httpClientAddQueryParam ( HttpClientContext * context , const char_t * name , const char_t * value ) { size_t nameLen ; size_t valueLen ; char_t separator ; char_t * p ; if ( context == NULL || name == NULL ) return ERROR_INVALID_PARAMETER ; if ( name [ 0 ] == '\\\\0' ) return ERROR_INVALID_PARAMETER ; if ( context -> requestState != HTTP_REQ_STATE_FORMAT_HEADER ) return ERROR_WRONG_STATE ; if ( context -> bufferLen > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_INVALID_SYNTAX ; context -> buffer [ context -> bufferLen ] = '\\\\0' ; <S2SV_StartBug> p = strchr ( context -> buffer , '<S2SV_blank>' ) ; <S2SV_EndBug> if ( p == NULL ) return ERROR_INVALID_SYNTAX ; p = strpbrk ( p + 1 , \"<S2SV_blank>?\" ) ; if ( p == NULL ) return ERROR_INVALID_SYNTAX ; if ( * p == '?' ) { <S2SV_StartBug> p = strchr ( p + 1 , '<S2SV_blank>' ) ; <S2SV_EndBug> if ( p == NULL ) return ERROR_INVALID_SYNTAX ; separator = '&' ; } else { separator = '?' ; } nameLen = osStrlen ( name ) ; if ( value == NULL ) { if ( ( context -> bufferLen + nameLen + 1 ) > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_BUFFER_OVERFLOW ; osMemmove ( p + nameLen + 1 , p , context -> buffer + context -> bufferLen + 1 - p ) ; p [ 0 ] = separator ; osStrncpy ( p + 1 , name , nameLen ) ; context -> bufferLen += nameLen + 1 ; } else { valueLen = osStrlen ( value ) ; if ( ( context -> bufferLen + nameLen + valueLen + 2 ) > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_BUFFER_OVERFLOW ; osMemmove ( p + nameLen + valueLen + 2 , p , context -> buffer + context -> bufferLen + 1 - p ) ; p [ 0 ] = separator ; osStrncpy ( p + 1 , name , nameLen ) ; p [ nameLen + 1 ] = '=' ; osStrncpy ( p + nameLen + 2 , value , valueLen ) ; context -> bufferLen += nameLen + valueLen + 2 ; } return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; p = osStrchr <S2SV_ModEnd> ( context -> <S2SV_ModStart> { p = osStrchr <S2SV_ModEnd> ( p +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_update_temporal_layer_framerate ( VP9_COMP * const cpi ) { SVC * const svc = & cpi -> svc ; <S2SV_StartBug> const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> <S2SV_StartBug> LAYER_CONTEXT * const lc = get_layer_context ( svc ) ; <S2SV_EndBug> RATE_CONTROL * const lrc = & lc -> rc ; <S2SV_StartBug> const int layer = svc -> temporal_layer_id ; <S2SV_EndBug> <S2SV_StartBug> lc -> framerate = oxcf -> framerate / oxcf -> ts_rate_decimator [ layer ] ; <S2SV_EndBug> <S2SV_StartBug> lrc -> av_per_frame_bandwidth = ( int ) ( lc -> target_bandwidth / lc -> framerate ) ; <S2SV_EndBug> lrc -> max_frame_bandwidth = cpi -> rc . max_frame_bandwidth ; <S2SV_StartBug> if ( layer == 0 ) { <S2SV_EndBug> <S2SV_StartBug> lc -> avg_frame_size = lrc -> av_per_frame_bandwidth ; <S2SV_EndBug> } else { const double prev_layer_framerate = <S2SV_StartBug> oxcf -> framerate / oxcf -> ts_rate_decimator [ layer - 1 ] ; <S2SV_EndBug> const int prev_layer_target_bandwidth = <S2SV_StartBug> oxcf -> ts_target_bitrate [ layer - 1 ] * 1000 ; <S2SV_EndBug> lc -> avg_frame_size = ( int ) ( ( lc -> target_bandwidth - prev_layer_target_bandwidth ) / ( lc -> framerate - prev_layer_framerate ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svc ; const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> = get_layer_context ( cpi <S2SV_ModEnd> ) ; RATE_CONTROL <S2SV_ModStart> ; const int st_idx = svc -> spatial_layer_id * svc -> number_temporal_layers + <S2SV_ModEnd> svc -> temporal_layer_id <S2SV_ModStart> -> temporal_layer_id ; const int tl = svc -> temporal_layer_id ; lc -> framerate = cpi <S2SV_ModEnd> -> framerate / <S2SV_ModStart> -> ts_rate_decimator [ tl <S2SV_ModEnd> ] ; lrc <S2SV_ModStart> ; lrc -> avg_frame_bandwidth <S2SV_ModEnd> = ( int <S2SV_ModStart> ; if ( tl <S2SV_ModEnd> == 0 ) <S2SV_ModStart> = lrc -> avg_frame_bandwidth <S2SV_ModEnd> ; } else <S2SV_ModStart> double prev_layer_framerate = cpi <S2SV_ModEnd> -> framerate / <S2SV_ModStart> -> ts_rate_decimator [ tl <S2SV_ModEnd> - 1 ] <S2SV_ModStart> = oxcf -> layer_target_bitrate [ st_idx <S2SV_ModEnd> - 1 ] <S2SV_ModStart> - 1 ] <S2SV_ModEnd> ; lc ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1066\n\n```\nCWE-476 static int SMB2_sess_establish_session ( struct SMB2_sess_data * sess_data ) { int rc = 0 ; struct cifs_ses * ses = sess_data -> ses ; mutex_lock ( & ses -> server -> srv_mutex ) ; <S2SV_StartBug> if ( ses -> server -> sign && ses -> server -> ops -> generate_signingkey ) { <S2SV_EndBug> <S2SV_StartBug> rc = ses -> server -> ops -> generate_signingkey ( ses ) ; <S2SV_EndBug> kfree ( ses -> auth_key . response ) ; ses -> auth_key . response = NULL ; if ( rc ) { cifs_dbg ( FYI , \"SMB3<S2SV_blank>session<S2SV_blank>key<S2SV_blank>generation<S2SV_blank>failed\\\\n\" ) ; mutex_unlock ( & ses -> server -> srv_mutex ) ; <S2SV_StartBug> goto keygen_exit ; <S2SV_EndBug> } } if ( ! ses -> server -> session_estab ) { ses -> server -> sequence_number = 0x2 ; ses -> server -> session_estab = true ; } mutex_unlock ( & ses -> server -> srv_mutex ) ; cifs_dbg ( FYI , \"SMB2/3<S2SV_blank>session<S2SV_blank>established<S2SV_blank>successfully\\\\n\" ) ; spin_lock ( & GlobalMid_Lock ) ; ses -> status = CifsGood ; ses -> need_reconnect = false ; spin_unlock ( & GlobalMid_Lock ) ; <S2SV_StartBug> keygen_exit : <S2SV_EndBug> if ( ! ses -> server -> sign ) { kfree ( ses -> auth_key . response ) ; ses -> auth_key . response = NULL ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> server -> <S2SV_ModEnd> ops -> generate_signingkey <S2SV_ModStart> ( ses ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> srv_mutex ) ; return rc <S2SV_ModEnd> ; } } <S2SV_ModStart> GlobalMid_Lock ) ; <S2SV_ModEnd> return rc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 long FS_FOpenFileRead ( const char * filename , fileHandle_t * file , qboolean uniqueFILE ) { searchpath_t * search ; long len ; <S2SV_StartBug> if ( ! fs_searchpaths ) <S2SV_EndBug> Com_Error ( ERR_FATAL , \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; <S2SV_StartBug> for ( search = fs_searchpaths ; search ; search = search -> next ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> len = FS_FOpenFileReadDir ( filename , search , file , uniqueFILE , qfalse ) ; if ( file == NULL ) { if ( len > 0 ) return len ; } else { if ( len >= 0 && * file ) return len ; } } # ifdef FS_MISSING if ( missingFiles ) fprintf ( missingFiles , \"%s\\\\n\" , filename ) ; # endif if ( file ) { * file = 0 ; return - 1 ; } else { return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long len ; qboolean isLocalConfig ; <S2SV_ModStart> \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; isLocalConfig = ! strcmp ( filename , \"autoexec.cfg\" ) || ! strcmp ( filename , Q3CONFIG_CFG ) ; <S2SV_ModStart> next ) { if ( isLocalConfig && search -> pack ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6346\n\n```\nCWE-416 static void fanout_release ( struct sock * sk ) { struct packet_sock * po = pkt_sk ( sk ) ; struct packet_fanout * f ; <S2SV_StartBug> f = po -> fanout ; <S2SV_EndBug> <S2SV_StartBug> if ( ! f ) <S2SV_EndBug> return ; mutex_lock ( & fanout_mutex ) ; po -> fanout = NULL ; if ( atomic_dec_and_test ( & f -> sk_ref ) ) { list_del ( & f -> list ) ; dev_remove_pack ( & f -> prot_hook ) ; fanout_release_data ( f ) ; kfree ( f ) ; } <S2SV_StartBug> mutex_unlock ( & fanout_mutex ) ; <S2SV_EndBug> if ( po -> rollover ) kfree_rcu ( po -> rollover , rcu ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * f ; mutex_lock ( & fanout_mutex ) ; <S2SV_ModStart> ; if ( f ) { <S2SV_ModEnd> po -> fanout <S2SV_ModStart> ) ; } <S2SV_ModEnd> if ( po <S2SV_ModStart> ) ; } mutex_unlock ( & fanout_mutex ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-426(不受信任的搜索路径)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3887\n\n```\nCWE-426 static void set_own_dir ( const char * argv0 ) { size_t l = strlen ( argv0 ) ; while ( l && argv0 [ l - 1 ] != '/' ) l -- ; if ( l == 0 ) <S2SV_StartBug> memcpy ( own_dir , \".\" , 2 ) ; <S2SV_EndBug> else { memcpy ( own_dir , argv0 , l - 1 ) ; own_dir [ l ] = 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) # ifdef SUPER_SECURE memcpy ( own_dir , \"/dev/null/\" , 2 ) ; # else <S2SV_ModStart> 2 ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14459\n\n```\nCWE-190 static void Process_ipfix_template_withdraw ( exporter_ipfix_domain_t * exporter , void * DataPtr , uint32_t size_left , FlowSource_t * fs ) { ipfix_template_record_t * ipfix_template_record ; while ( size_left ) { <S2SV_StartBug> uint32_t id ; <S2SV_EndBug> ipfix_template_record = ( ipfix_template_record_t * ) DataPtr ; size_left -= 4 ; id = ntohs ( ipfix_template_record -> TemplateID ) ; if ( id == IPFIX_TEMPLATE_FLOWSET_ID ) { remove_all_translation_tables ( exporter ) ; ReInitExtensionMapList ( fs ) ; } else { remove_translation_table ( fs , exporter , id ) ; } DataPtr = DataPtr + 4 ; if ( size_left < 4 ) { dbg_printf ( \"Skip<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>padding\\\\n\" , size_left ) ; size_left = 0 ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t id ; if ( size_left < 4 ) { LogError ( \"Process_ipfix<S2SV_blank>[%u]<S2SV_blank>Template<S2SV_blank>withdraw<S2SV_blank>size<S2SV_blank>error<S2SV_blank>at<S2SV_blank>%s<S2SV_blank>line<S2SV_blank>%u\" , exporter -> info . id , __FILE__ , __LINE__ , strerror ( errno ) ) ; size_left = 0 ; continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-28855\n\n```\nCWE-476 static void do_iccprofile_item ( deark * c , lctx * d , i64 pos , i64 len ) { i64 selector ; i64 data_len ; if ( len < 4 ) return ; selector = de_getu32be ( pos ) ; data_len = len - 4 ; de_dbg ( c , \"ICC<S2SV_blank>profile<S2SV_blank>segment,<S2SV_blank>selector=%d,<S2SV_blank>data<S2SV_blank>len=%d\" , ( int ) selector , ( int ) data_len ) ; if ( selector != 1 ) { dbuf_close ( d -> iccprofile_file ) ; d -> iccprofile_file = NULL ; } if ( selector == 0 ) { d -> iccprofile_file = dbuf_create_output_file ( c , \"icc\" , NULL , DE_CREATEFLAG_IS_AUX ) ; } if ( selector == 0 || selector == 1 ) { <S2SV_StartBug> dbuf_copy ( c -> infile , pos + 4 , data_len , d -> iccprofile_file ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) { if ( ! d -> iccprofile_file ) { de_warn ( c , \"Bad<S2SV_blank>ICC<S2SV_blank>profile<S2SV_blank>segment\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * create_policy_2_svc ( cpol_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } prime_arg = arg -> rec . policy ; if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_ADD , NULL , NULL ) ) { ret . code = KADM5_AUTH_ADD ; log_unauth ( \"kadm5_create_policy\" , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_create_policy ( ( void * ) handle , & arg -> rec , arg -> mask ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_create_policy\" , ( ( prime_arg == NULL ) ? \"(null)\" : prime_arg ) , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> ) ; } exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2850\n\n```\nCWE-119 static int iscsi_add_notunderstood_response ( char * key , char * value , struct iscsi_param_list * param_list ) { struct iscsi_extra_response * extra_response ; if ( strlen ( value ) > VALUE_MAXLEN ) { pr_err ( \"Value<S2SV_blank>for<S2SV_blank>notunderstood<S2SV_blank>key<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>exceeds<S2SV_blank>%d,\" \"<S2SV_blank>protocol<S2SV_blank>error.\\\\n\" , key , VALUE_MAXLEN ) ; return - 1 ; } extra_response = kzalloc ( sizeof ( struct iscsi_extra_response ) , GFP_KERNEL ) ; if ( ! extra_response ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for\" \"<S2SV_blank>struct<S2SV_blank>iscsi_extra_response.\\\\n\" ) ; return - 1 ; } INIT_LIST_HEAD ( & extra_response -> er_list ) ; <S2SV_StartBug> strncpy ( extra_response -> key , key , strlen ( key ) + 1 ) ; <S2SV_EndBug> strncpy ( extra_response -> value , NOTUNDERSTOOD , <S2SV_StartBug> strlen ( NOTUNDERSTOOD ) + 1 ) ; <S2SV_EndBug> list_add_tail ( & extra_response -> er_list , & param_list -> extra_response_list ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> er_list ) ; strlcpy <S2SV_ModEnd> ( extra_response -> <S2SV_ModStart> , key , sizeof ( extra_response -> key ) ) ; strlcpy <S2SV_ModEnd> ( extra_response -> <S2SV_ModStart> , NOTUNDERSTOOD , sizeof ( extra_response -> value ) <S2SV_ModEnd> ) ; list_add_tail\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12659\n\n```\nCWE-787 static int xdp_umem_reg ( struct xdp_umem * umem , struct xdp_umem_reg * mr ) { bool unaligned_chunks = mr -> flags & XDP_UMEM_UNALIGNED_CHUNK_FLAG ; u32 chunk_size = mr -> chunk_size , headroom = mr -> headroom ; unsigned int chunks , chunks_per_page ; u64 addr = mr -> addr , size = mr -> len ; <S2SV_StartBug> int size_chk , err ; <S2SV_EndBug> if ( chunk_size < XDP_UMEM_MIN_CHUNK_SIZE || chunk_size > PAGE_SIZE ) { return - EINVAL ; } if ( mr -> flags & ~ ( XDP_UMEM_UNALIGNED_CHUNK_FLAG | XDP_UMEM_USES_NEED_WAKEUP ) ) return - EINVAL ; if ( ! unaligned_chunks && ! is_power_of_2 ( chunk_size ) ) return - EINVAL ; if ( ! PAGE_ALIGNED ( addr ) ) { return - EINVAL ; } if ( ( addr + size ) < addr ) return - EINVAL ; chunks = ( unsigned int ) div_u64 ( size , chunk_size ) ; if ( chunks == 0 ) return - EINVAL ; if ( ! unaligned_chunks ) { chunks_per_page = PAGE_SIZE / chunk_size ; if ( chunks < chunks_per_page || chunks % chunks_per_page ) return - EINVAL ; } <S2SV_StartBug> size_chk = chunk_size - headroom - XDP_PACKET_HEADROOM ; <S2SV_EndBug> if ( size_chk < 0 ) return - EINVAL ; umem -> address = ( unsigned long ) addr ; umem -> chunk_mask = unaligned_chunks ? XSK_UNALIGNED_BUF_ADDR_MASK : ~ ( ( u64 ) chunk_size - 1 ) ; umem -> size = size ; umem -> headroom = headroom ; umem -> chunk_size_nohr = chunk_size - headroom ; umem -> npgs = size / PAGE_SIZE ; umem -> pgs = NULL ; umem -> user = NULL ; umem -> flags = mr -> flags ; INIT_LIST_HEAD ( & umem -> xsk_list ) ; spin_lock_init ( & umem -> xsk_list_lock ) ; refcount_set ( & umem -> users , 1 ) ; err = xdp_umem_account_pages ( umem ) ; if ( err ) return err ; err = xdp_umem_pin_pages ( umem ) ; if ( err ) goto out_account ; umem -> pages = kvcalloc ( umem -> npgs , sizeof ( * umem -> pages ) , GFP_KERNEL_ACCOUNT ) ; if ( ! umem -> pages ) { err = - ENOMEM ; goto out_pin ; } err = xdp_umem_map_pages ( umem ) ; if ( ! err ) return 0 ; kvfree ( umem -> pages ) ; out_pin : xdp_umem_unpin_pages ( umem ) ; out_account : xdp_umem_unaccount_pages ( umem ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ; int <S2SV_ModEnd> err ; if <S2SV_ModStart> EINVAL ; } if ( headroom >= chunk_size - XDP_PACKET_HEADROOM <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-26570\n\n```\nCWE-787 static int sc_oberthur_read_file ( struct sc_pkcs15_card * p15card , const char * in_path , unsigned char * * out , size_t * out_len , int verify_pin ) { struct sc_context * ctx = p15card -> card -> ctx ; struct sc_card * card = p15card -> card ; struct sc_file * file = NULL ; struct sc_path path ; size_t sz ; int rv ; LOG_FUNC_CALLED ( ctx ) ; if ( ! in_path || ! out || ! out_len ) LOG_TEST_RET ( ctx , SC_ERROR_INVALID_ARGUMENTS , \"Cannot<S2SV_blank>read<S2SV_blank>oberthur<S2SV_blank>file\" ) ; sc_log ( ctx , \"read<S2SV_blank>file<S2SV_blank>\\'%s\\';<S2SV_blank>verify_pin:%i\" , in_path , verify_pin ) ; * out = NULL ; * out_len = 0 ; sc_format_path ( in_path , & path ) ; rv = sc_select_file ( card , & path , & file ) ; if ( rv != SC_SUCCESS ) { sc_file_free ( file ) ; LOG_TEST_RET ( ctx , rv , \"Cannot<S2SV_blank>select<S2SV_blank>oberthur<S2SV_blank>file<S2SV_blank>to<S2SV_blank>read\" ) ; } if ( file -> ef_structure == SC_FILE_EF_TRANSPARENT ) sz = file -> size ; else sz = ( file -> record_length + 2 ) * file -> record_count ; * out = calloc ( sz , 1 ) ; if ( * out == NULL ) { sc_file_free ( file ) ; LOG_TEST_RET ( ctx , SC_ERROR_OUT_OF_MEMORY , \"Cannot<S2SV_blank>read<S2SV_blank>oberthur<S2SV_blank>file\" ) ; } if ( file -> ef_structure == SC_FILE_EF_TRANSPARENT ) { rv = sc_read_binary ( card , 0 , * out , sz , 0 ) ; } else { <S2SV_StartBug> int rec ; <S2SV_EndBug> int offs = 0 ; <S2SV_StartBug> int rec_len = file -> record_length ; <S2SV_EndBug> <S2SV_StartBug> for ( rec = 1 ; ; rec ++ ) { <S2SV_EndBug> rv = sc_read_record ( card , rec , * out + offs + 2 , rec_len , SC_RECORD_BY_REC_NR ) ; if ( rv == SC_ERROR_RECORD_NOT_FOUND ) { rv = 0 ; break ; } else if ( rv < 0 ) { break ; } rec_len = rv ; * ( * out + offs ) = 'R' ; * ( * out + offs + 1 ) = rv ; offs += rv + 2 ; } sz = offs ; } sc_log ( ctx , \"read<S2SV_blank>oberthur<S2SV_blank>file<S2SV_blank>result<S2SV_blank>%i\" , rv ) ; if ( verify_pin && rv == SC_ERROR_SECURITY_STATUS_NOT_SATISFIED ) { struct sc_pkcs15_object * objs [ 0x10 ] , * pin_obj = NULL ; const struct sc_acl_entry * acl = sc_file_get_acl_entry ( file , SC_AC_OP_READ ) ; int ii ; rv = sc_pkcs15_get_objects ( p15card , SC_PKCS15_TYPE_AUTH_PIN , objs , 0x10 ) ; if ( rv != SC_SUCCESS ) { sc_file_free ( file ) ; LOG_TEST_RET ( ctx , rv , \"Cannot<S2SV_blank>read<S2SV_blank>oberthur<S2SV_blank>file:<S2SV_blank>get<S2SV_blank>AUTH<S2SV_blank>objects<S2SV_blank>error\" ) ; } for ( ii = 0 ; ii < rv ; ii ++ ) { struct sc_pkcs15_auth_info * auth_info = ( struct sc_pkcs15_auth_info * ) objs [ ii ] -> data ; sc_log ( ctx , \"compare<S2SV_blank>PIN/ACL<S2SV_blank>refs:%i/%i,<S2SV_blank>method:%i/%i\" , auth_info -> attrs . pin . reference , acl -> key_ref , auth_info -> auth_method , acl -> method ) ; if ( auth_info -> attrs . pin . reference == ( int ) acl -> key_ref && auth_info -> auth_method == ( unsigned ) acl -> method ) { pin_obj = objs [ ii ] ; break ; } } if ( ! pin_obj || ! pin_obj -> content . value ) { rv = SC_ERROR_SECURITY_STATUS_NOT_SATISFIED ; } else { rv = sc_pkcs15_verify_pin ( p15card , pin_obj , pin_obj -> content . value , pin_obj -> content . len ) ; if ( ! rv ) rv = sc_oberthur_read_file ( p15card , in_path , out , out_len , 0 ) ; } } ; sc_file_free ( file ) ; if ( rv < 0 ) { free ( * out ) ; * out = NULL ; * out_len = 0 ; } * out_len = sz ; LOG_FUNC_RETURN ( ctx , rv ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { size_t rec ; size_t <S2SV_ModEnd> offs = 0 <S2SV_ModStart> = 0 ; size_t <S2SV_ModEnd> rec_len = file <S2SV_ModStart> ++ ) { if ( rec > file -> record_count ) { rv = 0 ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_reset_mb_tokens_context ( MACROBLOCKD * x ) { ENTROPY_CONTEXT * a_ctx = ( ( ENTROPY_CONTEXT * ) x -> above_context ) ; ENTROPY_CONTEXT * l_ctx = ( ( ENTROPY_CONTEXT * ) x -> left_context ) ; <S2SV_StartBug> vpx_memset ( a_ctx , 0 , sizeof ( ENTROPY_CONTEXT_PLANES ) - 1 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( l_ctx , 0 , sizeof ( ENTROPY_CONTEXT_PLANES ) - 1 ) ; <S2SV_EndBug> if ( ! x -> mode_info_context -> mbmi . is_4x4 ) { a_ctx [ 8 ] = l_ctx [ 8 ] = 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> left_context ) ; memset <S2SV_ModEnd> ( a_ctx , <S2SV_ModStart> 1 ) ; memset <S2SV_ModEnd> ( l_ctx ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-16(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0957\n\n```\nCWE-16 <S2SV_StartBug> static int override_release ( char __user * release , int len ) <S2SV_EndBug> { <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> char buf [ 65 ] ; if ( current -> personality & UNAME26 ) { <S2SV_StartBug> char * rest = UTS_RELEASE ; <S2SV_EndBug> int ndots = 0 ; <S2SV_StartBug> unsigned v ; <S2SV_EndBug> while ( * rest ) { if ( * rest == '.' && ++ ndots >= 3 ) break ; if ( ! isdigit ( * rest ) && * rest != '.' ) break ; rest ++ ; } v = ( ( LINUX_VERSION_CODE >> 8 ) & 0xff ) + 40 ; <S2SV_StartBug> snprintf ( buf , len , \"2.6.%u%s\" , v , rest ) ; <S2SV_EndBug> <S2SV_StartBug> ret = copy_to_user ( release , buf , len ) ; <S2SV_EndBug> } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * release , size_t <S2SV_ModEnd> len ) { <S2SV_ModStart> ret = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> UNAME26 ) { const <S2SV_ModStart> rest = UTS_RELEASE ; char buf [ 65 ] = { 0 } <S2SV_ModStart> ; unsigned v ; size_t copy <S2SV_ModStart> + 40 ; copy = min ( sizeof ( buf ) , max_t ( size_t , 1 , len ) ) ; copy = scnprintf <S2SV_ModEnd> ( buf , <S2SV_ModStart> ( buf , copy <S2SV_ModEnd> , \"2.6.%u%s\" , <S2SV_ModStart> , buf , copy + 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> static const char * parse_value ( cJSON * item , const char * value ) <S2SV_EndBug> { if ( ! value ) return 0 ; if ( ! strncmp ( value , \"null\" , 4 ) ) { item -> type = cJSON_NULL ; return value + 4 ; } if ( ! strncmp ( value , \"false\" , 5 ) ) { item -> type = cJSON_False ; return value + 5 ; } if ( ! strncmp ( value , \"true\" , 4 ) ) { item -> type = cJSON_True ; item -> valueint = 1 ; return value + 4 ; } if ( * value == \\'\\\\\"\\' ) <S2SV_StartBug> return parse_string ( item , value ) ; <S2SV_EndBug> if ( * value == '-' || ( * value >= '0' && * value <= '9' ) ) <S2SV_StartBug> return parse_number ( item , value ) ; <S2SV_EndBug> if ( * value == '[' ) <S2SV_StartBug> return parse_array ( item , value ) ; <S2SV_EndBug> if ( * value == '{' ) <S2SV_StartBug> return parse_object ( item , value ) ; <S2SV_EndBug> ep = value ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * value , const char * * ep ) { if ( ! value ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> == \\'\\\\\"\\' ) { <S2SV_ModStart> item , value , ep ) ; } <S2SV_ModEnd> if ( * <S2SV_ModStart> '9' ) ) { <S2SV_ModStart> value ) ; } <S2SV_ModStart> == '[' ) { <S2SV_ModStart> item , value , ep ) ; } <S2SV_ModEnd> if ( * <S2SV_ModStart> == '{' ) { <S2SV_ModStart> item , value , ep ) ; } * ep = value ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18021\n\n```\nCWE-20 static int get_core_reg ( struct kvm_vcpu * vcpu , const struct kvm_one_reg * reg ) { __u32 __user * uaddr = ( __u32 __user * ) ( unsigned long ) reg -> addr ; struct kvm_regs * regs = vcpu_gp_regs ( vcpu ) ; int nr_regs = sizeof ( * regs ) / sizeof ( __u32 ) ; u32 off ; off = core_reg_offset_from_id ( reg -> id ) ; if ( off >= nr_regs || ( off + ( KVM_REG_SIZE ( reg -> id ) / sizeof ( __u32 ) ) ) >= nr_regs ) return - ENOENT ; <S2SV_StartBug> if ( copy_to_user ( uaddr , ( ( u32 * ) regs ) + off , KVM_REG_SIZE ( reg -> id ) ) ) <S2SV_EndBug> return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( validate_core_offset ( reg ) ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static int get_gate_page ( struct mm_struct * mm , unsigned long address , unsigned int gup_flags , struct vm_area_struct * * vma , struct page * * page ) { pgd_t * pgd ; p4d_t * p4d ; pud_t * pud ; pmd_t * pmd ; pte_t * pte ; int ret = - EFAULT ; if ( gup_flags & FOLL_WRITE ) return - EFAULT ; if ( address > TASK_SIZE ) pgd = pgd_offset_k ( address ) ; else pgd = pgd_offset_gate ( mm , address ) ; BUG_ON ( pgd_none ( * pgd ) ) ; p4d = p4d_offset ( pgd , address ) ; BUG_ON ( p4d_none ( * p4d ) ) ; pud = pud_offset ( p4d , address ) ; BUG_ON ( pud_none ( * pud ) ) ; pmd = pmd_offset ( pud , address ) ; if ( ! pmd_present ( * pmd ) ) return - EFAULT ; VM_BUG_ON ( pmd_trans_huge ( * pmd ) ) ; pte = pte_offset_map ( pmd , address ) ; if ( pte_none ( * pte ) ) goto unmap ; * vma = get_gate_vma ( mm ) ; if ( ! page ) goto out ; * page = vm_normal_page ( * vma , address , * pte ) ; if ( ! * page ) { if ( ( gup_flags & FOLL_DUMP ) || ! is_zero_pfn ( pte_pfn ( * pte ) ) ) goto unmap ; * page = pte_page ( * pte ) ; if ( is_device_public_page ( * page ) ) goto unmap ; } <S2SV_StartBug> get_page ( * page ) ; <S2SV_EndBug> out : ret = 0 ; unmap : pte_unmap ( pte ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unmap ; } if ( unlikely ( ! try_get_page ( * page ) ) ) { ret = - ENOMEM ; goto unmap ; } <S2SV_ModEnd> out : ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1585\n\n```\nCWE-264 static struct cifsSesInfo * cifs_get_smb_ses ( struct TCP_Server_Info * server , struct smb_vol * volume_info ) { int rc = - ENOMEM , xid ; struct cifsSesInfo * ses ; xid = GetXid ( ) ; <S2SV_StartBug> ses = cifs_find_smb_ses ( server , volume_info -> username ) ; <S2SV_EndBug> if ( ses ) { cFYI ( 1 , \"Existing<S2SV_blank>smb<S2SV_blank>sess<S2SV_blank>found<S2SV_blank>(status=%d)\" , ses -> status ) ; cifs_put_tcp_session ( server ) ; mutex_lock ( & ses -> session_mutex ) ; rc = cifs_negotiate_protocol ( xid , ses ) ; if ( rc ) { mutex_unlock ( & ses -> session_mutex ) ; cifs_put_smb_ses ( ses ) ; FreeXid ( xid ) ; return ERR_PTR ( rc ) ; } if ( ses -> need_reconnect ) { cFYI ( 1 , \"Session<S2SV_blank>needs<S2SV_blank>reconnect\" ) ; rc = cifs_setup_session ( xid , ses , volume_info -> local_nls ) ; if ( rc ) { mutex_unlock ( & ses -> session_mutex ) ; cifs_put_smb_ses ( ses ) ; FreeXid ( xid ) ; return ERR_PTR ( rc ) ; } } mutex_unlock ( & ses -> session_mutex ) ; FreeXid ( xid ) ; return ses ; } cFYI ( 1 , \"Existing<S2SV_blank>smb<S2SV_blank>sess<S2SV_blank>not<S2SV_blank>found\" ) ; ses = sesInfoAlloc ( ) ; if ( ses == NULL ) goto get_ses_fail ; ses -> server = server ; if ( server -> addr . sockAddr6 . sin6_family == AF_INET6 ) sprintf ( ses -> serverName , \"%pI6\" , & server -> addr . sockAddr6 . sin6_addr ) ; else sprintf ( ses -> serverName , \"%pI4\" , & server -> addr . sockAddr . sin_addr . s_addr ) ; if ( volume_info -> username ) strncpy ( ses -> userName , volume_info -> username , MAX_USERNAME_SIZE ) ; if ( volume_info -> password ) { ses -> password = kstrdup ( volume_info -> password , GFP_KERNEL ) ; if ( ! ses -> password ) goto get_ses_fail ; } if ( volume_info -> domainname ) { int len = strlen ( volume_info -> domainname ) ; ses -> domainName = kmalloc ( len + 1 , GFP_KERNEL ) ; if ( ses -> domainName ) strcpy ( ses -> domainName , volume_info -> domainname ) ; } ses -> linux_uid = volume_info -> linux_uid ; ses -> overrideSecFlg = volume_info -> secFlg ; mutex_lock ( & ses -> session_mutex ) ; rc = cifs_negotiate_protocol ( xid , ses ) ; if ( ! rc ) rc = cifs_setup_session ( xid , ses , volume_info -> local_nls ) ; mutex_unlock ( & ses -> session_mutex ) ; if ( rc ) goto get_ses_fail ; write_lock ( & cifs_tcp_ses_lock ) ; list_add ( & ses -> smb_ses_list , & server -> smb_ses_list ) ; write_unlock ( & cifs_tcp_ses_lock ) ; FreeXid ( xid ) ; return ses ; get_ses_fail : sesInfoFree ( ses ) ; FreeXid ( xid ) ; return ERR_PTR ( rc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> server , volume_info <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3182\n\n```\nCWE-119 static int logi_dj_raw_event ( struct hid_device * hdev , struct hid_report * report , u8 * data , int size ) { struct dj_receiver_dev * djrcv_dev = hid_get_drvdata ( hdev ) ; struct dj_report * dj_report = ( struct dj_report * ) data ; unsigned long flags ; bool report_processed = false ; <S2SV_StartBug> dbg_hid ( \"%s,<S2SV_blank>size:%d\\\\n\" , __func__ , size ) ; <S2SV_EndBug> spin_lock_irqsave ( & djrcv_dev -> lock , flags ) ; if ( dj_report -> report_id == REPORT_ID_DJ_SHORT ) { switch ( dj_report -> report_type ) { case REPORT_TYPE_NOTIF_DEVICE_PAIRED : case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED : logi_dj_recv_queue_notification ( djrcv_dev , dj_report ) ; break ; case REPORT_TYPE_NOTIF_CONNECTION_STATUS : if ( dj_report -> report_params [ CONNECTION_STATUS_PARAM_STATUS ] == STATUS_LINKLOSS ) { logi_dj_recv_forward_null_report ( djrcv_dev , dj_report ) ; } break ; default : logi_dj_recv_forward_report ( djrcv_dev , dj_report ) ; } report_processed = true ; } spin_unlock_irqrestore ( & djrcv_dev -> lock , flags ) ; return report_processed ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) ; if ( ( dj_report -> device_index < DJ_DEVICE_INDEX_MIN ) || ( dj_report -> device_index > DJ_DEVICE_INDEX_MAX ) ) { dev_err ( & hdev -> dev , \"%s:<S2SV_blank>invalid<S2SV_blank>device<S2SV_blank>index:%d\\\\n\" , __func__ , dj_report -> device_index ) ; return false ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-426(不受信任的搜索路径)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10009\n\n```\nCWE-426 static void usage ( void ) { fprintf ( stderr , \"usage:<S2SV_blank>ssh-agent<S2SV_blank>[-c<S2SV_blank>|<S2SV_blank>-s]<S2SV_blank>[-Dd]<S2SV_blank>[-a<S2SV_blank>bind_address]<S2SV_blank>[-E<S2SV_blank>fingerprint_hash]\\\\n\" <S2SV_StartBug> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>[-t<S2SV_blank>life]<S2SV_blank>[command<S2SV_blank>[arg<S2SV_blank>...]]\\\\n\" <S2SV_EndBug> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ssh-agent<S2SV_blank>[-c<S2SV_blank>|<S2SV_blank>-s]<S2SV_blank>-k\\\\n\" ) ; exit ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stderr , \"usage:<S2SV_blank>ssh-agent<S2SV_blank>[-c<S2SV_blank>|<S2SV_blank>-s]<S2SV_blank>[-Dd]<S2SV_blank>[-a<S2SV_blank>bind_address]<S2SV_blank>[-E<S2SV_blank>fingerprint_hash]\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>[-P<S2SV_blank>pkcs11_whitelist]<S2SV_blank>[-t<S2SV_blank>life]<S2SV_blank>[command<S2SV_blank>[arg<S2SV_blank>...]]\\\\n\" <S2SV_ModEnd> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ssh-agent<S2SV_blank>[-c<S2SV_blank>|<S2SV_blank>-s]<S2SV_blank>-k\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1915\n\n```\nCWE-611 <S2SV_StartBug> int xml_init ( modsec_rec * msr , char * * error_msg ) { <S2SV_EndBug> if ( error_msg == NULL ) return - 1 ; * error_msg = NULL ; msr -> xml = apr_pcalloc ( msr -> mp , sizeof ( xml_data ) ) ; if ( msr -> xml == NULL ) return - 1 ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error_msg ) { xmlParserInputBufferCreateFilenameFunc entity ; <S2SV_ModStart> - 1 ; if ( msr -> txcfg -> xml_external_entity == 0 ) { entity = xmlParserInputBufferCreateFilenameDefault ( xml_unload_external_entity ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-119 l_int32 gplotAddPlot ( GPLOT * gplot , NUMA * nax , NUMA * nay , l_int32 plotstyle , const char * plottitle ) { <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> char emptystring [ ] = \"\" ; char * datastr , * title ; l_int32 n , i ; l_float32 valx , valy , startx , delx ; SARRAY * sa ; PROCNAME ( \"gplotAddPlot\" ) ; if ( ! gplot ) return ERROR_INT ( \"gplot<S2SV_blank>not<S2SV_blank>defined\" , procName , 1 ) ; if ( ! nay ) return ERROR_INT ( \"nay<S2SV_blank>not<S2SV_blank>defined\" , procName , 1 ) ; if ( plotstyle < 0 || plotstyle >= NUM_GPLOT_STYLES ) return ERROR_INT ( \"invalid<S2SV_blank>plotstyle\" , procName , 1 ) ; if ( ( n = numaGetCount ( nay ) ) == 0 ) return ERROR_INT ( \"no<S2SV_blank>points<S2SV_blank>to<S2SV_blank>plot\" , procName , 1 ) ; if ( nax && ( n != numaGetCount ( nax ) ) ) return ERROR_INT ( \"nax<S2SV_blank>and<S2SV_blank>nay<S2SV_blank>sizes<S2SV_blank>differ\" , procName , 1 ) ; if ( n == 1 && plotstyle == GPLOT_LINES ) { L_INFO ( \"only<S2SV_blank>1<S2SV_blank>pt;<S2SV_blank>changing<S2SV_blank>style<S2SV_blank>to<S2SV_blank>points\\\\n\" , procName ) ; plotstyle = GPLOT_POINTS ; } numaGetParameters ( nay , & startx , & delx ) ; numaAddNumber ( gplot -> plotstyles , plotstyle ) ; if ( plottitle ) { title = stringNew ( plottitle ) ; sarrayAddString ( gplot -> plottitles , title , L_INSERT ) ; } else { sarrayAddString ( gplot -> plottitles , emptystring , L_COPY ) ; } gplot -> nplots ++ ; <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.data.%d\" , gplot -> rootname , gplot -> nplots ) ; <S2SV_EndBug> sarrayAddString ( gplot -> datanames , buf , L_COPY ) ; sa = sarrayCreate ( n ) ; for ( i = 0 ; i < n ; i ++ ) { if ( nax ) numaGetFValue ( nax , i , & valx ) ; else valx = startx + i * delx ; numaGetFValue ( nay , i , & valy ) ; <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%f<S2SV_blank>%f\\\\n\" , valx , valy ) ; <S2SV_EndBug> sarrayAddString ( sa , buf , L_COPY ) ; } datastr = sarrayToString ( sa , 0 ) ; sarrayAddString ( gplot -> plotdata , datastr , L_INSERT ) ; sarrayDestroy ( & sa ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.data.%d\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%f<S2SV_blank>%f\\\\n\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 u_int atm_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int caplen = h -> caplen ; u_int length = h -> len ; uint32_t llchdr ; u_int hdrlen = 0 ; if ( caplen < 1 || length < 1 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( caplen ) ; } if ( * p == LLC_UI ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"CNLPID<S2SV_blank>\" ) ) ; <S2SV_StartBug> isoclns_print ( ndo , p + 1 , length - 1 , caplen - 1 ) ; <S2SV_EndBug> return hdrlen ; } if ( caplen < 3 || length < 3 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( caplen ) ; } llchdr = EXTRACT_24BITS ( p ) ; if ( llchdr != LLC_UI_HDR ( LLCSAP_SNAP ) && llchdr != LLC_UI_HDR ( LLCSAP_ISONS ) && llchdr != LLC_UI_HDR ( LLCSAP_IP ) ) { if ( caplen < 20 || length < 20 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( caplen ) ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%08x%08x<S2SV_blank>%08x%08x<S2SV_blank>\" , EXTRACT_32BITS ( p ) , EXTRACT_32BITS ( p + 4 ) , EXTRACT_32BITS ( p + 8 ) , EXTRACT_32BITS ( p + 12 ) ) ) ; p += 20 ; length -= 20 ; caplen -= 20 ; hdrlen += 20 ; } hdrlen += atm_llc_print ( ndo , p , length , caplen ) ; return ( hdrlen ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length - 1 <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2150\n\n```\nCWE-264 static int command_write ( struct pci_dev * dev , int offset , u16 value , void * data ) { struct xen_pcibk_dev_data * dev_data ; int err ; <S2SV_StartBug> dev_data = pci_get_drvdata ( dev ) ; <S2SV_EndBug> if ( ! pci_is_enabled ( dev ) && is_enable_cmd ( value ) ) { if ( unlikely ( verbose_request ) ) printk ( KERN_DEBUG DRV_NAME \":<S2SV_blank>%s:<S2SV_blank>enable\\\\n\" , pci_name ( dev ) ) ; err = pci_enable_device ( dev ) ; if ( err ) return err ; if ( dev_data ) dev_data -> enable_intx = 1 ; } else if ( pci_is_enabled ( dev ) && ! is_enable_cmd ( value ) ) { if ( unlikely ( verbose_request ) ) printk ( KERN_DEBUG DRV_NAME \":<S2SV_blank>%s:<S2SV_blank>disable\\\\n\" , pci_name ( dev ) ) ; pci_disable_device ( dev ) ; if ( dev_data ) dev_data -> enable_intx = 0 ; } if ( ! dev -> is_busmaster && is_master_cmd ( value ) ) { if ( unlikely ( verbose_request ) ) printk ( KERN_DEBUG DRV_NAME \":<S2SV_blank>%s:<S2SV_blank>set<S2SV_blank>bus<S2SV_blank>master\\\\n\" , pci_name ( dev ) ) ; pci_set_master ( dev ) ; } if ( value & PCI_COMMAND_INVALIDATE ) { if ( unlikely ( verbose_request ) ) printk ( KERN_DEBUG DRV_NAME \":<S2SV_blank>%s:<S2SV_blank>enable<S2SV_blank>memory-write-invalidate\\\\n\" , pci_name ( dev ) ) ; err = pci_set_mwi ( dev ) ; if ( err ) { pr_warn ( \"%s:<S2SV_blank>cannot<S2SV_blank>enable<S2SV_blank>memory-write-invalidate<S2SV_blank>(%d)\\\\n\" , pci_name ( dev ) , err ) ; value &= ~ PCI_COMMAND_INVALIDATE ; } } <S2SV_StartBug> return pci_write_config_word ( dev , offset , value ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int err ; u16 val ; struct pci_cmd_info * cmd = data ; <S2SV_ModStart> ; } } cmd -> val = value ; if ( ! permissive && ( ! dev_data || ! dev_data -> permissive ) ) return 0 ; err = pci_read_config_word ( dev , offset , & val ) ; if ( err || val == value ) return err ; value &= PCI_COMMAND_GUEST ; value |= val & ~ PCI_COMMAND_GUEST ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * lg_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { struct lg_drv_data * drv_data = hid_get_drvdata ( hdev ) ; struct usb_device_descriptor * udesc ; __u16 bcdDevice , rev_maj , rev_min ; <S2SV_StartBug> if ( ( drv_data -> quirks & LG_RDESC ) && * rsize >= 90 && rdesc [ 83 ] == 0x26 && <S2SV_EndBug> rdesc [ 84 ] == 0x8c && rdesc [ 85 ] == 0x02 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>keyboard<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 84 ] = rdesc [ 89 ] = 0x4d ; rdesc [ 85 ] = rdesc [ 90 ] = 0x10 ; } <S2SV_StartBug> if ( ( drv_data -> quirks & LG_RDESC_REL_ABS ) && * rsize >= 50 && <S2SV_EndBug> rdesc [ 32 ] == 0x81 && rdesc [ 33 ] == 0x06 && rdesc [ 49 ] == 0x81 && rdesc [ 50 ] == 0x06 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>rel/abs<S2SV_blank>in<S2SV_blank>Logitech<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 33 ] = rdesc [ 50 ] = 0x02 ; } switch ( hdev -> product ) { case USB_DEVICE_ID_LOGITECH_WHEEL : udesc = & ( hid_to_usb_dev ( hdev ) -> descriptor ) ; if ( ! udesc ) { hid_err ( hdev , \"NULL<S2SV_blank>USB<S2SV_blank>device<S2SV_blank>descriptor\\\\n\" ) ; break ; } bcdDevice = le16_to_cpu ( udesc -> bcdDevice ) ; rev_maj = bcdDevice >> 8 ; rev_min = bcdDevice & 0xff ; if ( rev_maj == 1 && rev_min == 2 && * rsize == DF_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Driving<S2SV_blank>Force<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = df_rdesc_fixed ; * rsize = sizeof ( df_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL : if ( * rsize == MOMO_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Momo<S2SV_blank>Force<S2SV_blank>(Red)<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = momo_rdesc_fixed ; * rsize = sizeof ( momo_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2 : if ( * rsize == MOMO2_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Momo<S2SV_blank>Racing<S2SV_blank>Force<S2SV_blank>(Black)<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = momo2_rdesc_fixed ; * rsize = sizeof ( momo2_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL : if ( * rsize == FV_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Formula<S2SV_blank>Vibration<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = fv_rdesc_fixed ; * rsize = sizeof ( fv_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_DFP_WHEEL : if ( * rsize == DFP_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Driving<S2SV_blank>Force<S2SV_blank>Pro<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = dfp_rdesc_fixed ; * rsize = sizeof ( dfp_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_WII_WHEEL : if ( * rsize >= 101 && rdesc [ 41 ] == 0x95 && rdesc [ 42 ] == 0x0B && rdesc [ 47 ] == 0x05 && rdesc [ 48 ] == 0x09 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Speed<S2SV_blank>Force<S2SV_blank>Wireless<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 41 ] = 0x05 ; rdesc [ 42 ] = 0x09 ; rdesc [ 47 ] = 0x95 ; rdesc [ 48 ] = 0x0B ; } break ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 91 <S2SV_ModEnd> && rdesc [ <S2SV_ModStart> * rsize >= 51 <S2SV_ModEnd> && rdesc [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-290(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18190\n\n```\nCWE-290 static int valid_host ( cupsd_client_t * con ) { cupsd_alias_t * a ; cupsd_netif_t * netif ; const char * end ; char * ptr ; strlcpy ( con -> clientname , httpGetField ( con -> http , HTTP_FIELD_HOST ) , sizeof ( con -> clientname ) ) ; if ( ( ptr = strrchr ( con -> clientname , ':' ) ) != NULL && ! strchr ( ptr , ']' ) ) { * ptr ++ = '\\\\0' ; con -> clientport = atoi ( ptr ) ; } else con -> clientport = con -> serverport ; if ( httpAddrLocalhost ( httpGetAddress ( con -> http ) ) ) { return ( ! _cups_strcasecmp ( con -> clientname , \"localhost\" ) || ! _cups_strcasecmp ( con -> clientname , \"localhost.\" ) || <S2SV_StartBug> # ifdef __linux <S2SV_EndBug> ! _cups_strcasecmp ( con -> clientname , \"localhost.localdomain\" ) || # endif ! strcmp ( con -> clientname , \"127.0.0.1\" ) || ! strcmp ( con -> clientname , \"[::1]\" ) ) ; } # if defined ( HAVE_DNSSD ) || defined ( HAVE_AVAHI ) if ( ( end = strrchr ( con -> clientname , '.' ) ) != NULL && end > con -> clientname && ! end [ 1 ] ) { for ( end -- ; end > con -> clientname && * end != '.' ; end -- ) ; } if ( end && ( ! _cups_strcasecmp ( end , \".local\" ) || ! _cups_strcasecmp ( end , \".local.\" ) ) ) return ( 1 ) ; # endif if ( isdigit ( con -> clientname [ 0 ] & 255 ) || con -> clientname [ 0 ] == '[' ) { http_addrlist_t * addrlist ; if ( ( addrlist = httpAddrGetList ( con -> clientname , AF_UNSPEC , NULL ) ) != NULL ) { httpAddrFreeList ( addrlist ) ; return ( 1 ) ; } } for ( a = ( cupsd_alias_t * ) cupsArrayFirst ( ServerAlias ) ; a ; a = ( cupsd_alias_t * ) cupsArrayNext ( ServerAlias ) ) { if ( ! strcmp ( a -> name , \"*\" ) ) return ( 1 ) ; if ( ! _cups_strncasecmp ( con -> clientname , a -> name , a -> namelen ) ) { end = con -> clientname + a -> namelen ; if ( ! * end || ( * end == '.' && ! end [ 1 ] ) ) return ( 1 ) ; } } # if defined ( HAVE_DNSSD ) || defined ( HAVE_AVAHI ) for ( a = ( cupsd_alias_t * ) cupsArrayFirst ( DNSSDAlias ) ; a ; a = ( cupsd_alias_t * ) cupsArrayNext ( DNSSDAlias ) ) { if ( ! strcmp ( a -> name , \"*\" ) ) return ( 1 ) ; if ( ! _cups_strncasecmp ( con -> clientname , a -> name , a -> namelen ) ) { end = con -> clientname + a -> namelen ; if ( ! * end || ( * end == '.' && ! end [ 1 ] ) ) return ( 1 ) ; } } # endif for ( netif = ( cupsd_netif_t * ) cupsArrayFirst ( NetIFList ) ; netif ; netif = ( cupsd_netif_t * ) cupsArrayNext ( NetIFList ) ) { if ( ! _cups_strncasecmp ( con -> clientname , netif -> hostname , netif -> hostlen ) ) { end = con -> clientname + netif -> hostlen ; if ( ! * end || ( * end == '.' && ! end [ 1 ] ) ) return ( 1 ) ; } } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"localhost.\" ) || <S2SV_ModEnd> ! strcmp (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-10378\n\n```\nCWE-125 int ImagingPcxDecode ( Imaging im , ImagingCodecState state , UINT8 * buf , Py_ssize_t bytes ) { UINT8 n ; UINT8 * ptr ; <S2SV_StartBug> if ( strcmp ( im -> mode , \"1\" ) == 0 && state -> xsize > state -> bytes * 8 ) { <S2SV_EndBug> state -> errcode = IMAGING_CODEC_OVERRUN ; return - 1 ; <S2SV_StartBug> } else if ( strcmp ( im -> mode , \"P\" ) == 0 && state -> xsize > state -> bytes ) { <S2SV_EndBug> state -> errcode = IMAGING_CODEC_OVERRUN ; return - 1 ; } <S2SV_StartBug> ptr = buf ; <S2SV_EndBug> for ( ; ; ) { if ( bytes < 1 ) return ptr - buf ; if ( ( * ptr & 0xC0 ) == 0xC0 ) { if ( bytes < 2 ) return ptr - buf ; n = ptr [ 0 ] & 0x3F ; while ( n > 0 ) { if ( state -> x >= state -> bytes ) { state -> errcode = IMAGING_CODEC_OVERRUN ; break ; } state -> buffer [ state -> x ++ ] = ptr [ 1 ] ; n -- ; } ptr += 2 ; bytes -= 2 ; } else { state -> buffer [ state -> x ++ ] = ptr [ 0 ] ; ptr ++ ; bytes -- ; } if ( state -> x >= state -> bytes ) { if ( state -> bytes % state -> xsize && state -> bytes > state -> xsize ) { int bands = state -> bytes / state -> xsize ; int stride = state -> bytes / bands ; int i ; for ( i = 1 ; i < bands ; i ++ ) { memmove ( & state -> buffer [ i * state -> xsize ] , & state -> buffer [ i * stride ] , state -> xsize ) ; } } state -> shuffle ( ( UINT8 * ) im -> image [ state -> y + state -> yoff ] + state -> xoff * im -> pixelsize , state -> buffer , state -> xsize ) ; state -> x = 0 ; if ( ++ state -> y >= state -> ysize ) { return - 1 ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( state -> xsize * state -> bits + 7 ) / 8 <S2SV_ModEnd> > state -> <S2SV_ModStart> state -> bytes <S2SV_ModEnd> ) { state <S2SV_ModStart> 1 ; } ptr = buf ; for ( ; ; ) { if ( bytes < 1 ) return ptr - buf ; if ( ( * ptr & 0xC0 ) == 0xC0 ) { if ( bytes < 2 ) return ptr - buf ; n = ptr [ 0 ] & 0x3F ; while ( n > 0 ) { if ( state -> x >= state -> bytes ) { state -> errcode = IMAGING_CODEC_OVERRUN ; break ; } state -> buffer [ state -> x ++ ] = ptr [ 1 ] ; n -- ; } ptr += 2 ; bytes -= 2 ; } else { state -> buffer [ state -> x ++ ] = ptr [ 0 ] ; ptr ++ ; bytes -- ; } if ( state -> x >= state -> bytes ) { if ( state -> bytes % state -> xsize && state -> bytes > state -> xsize ) { int bands = state -> bytes / state -> xsize ; int stride = state -> bytes / bands ; int i ; for ( i = 1 ; i < bands ; i ++ ) { memmove ( & state -> buffer [ i * state -> xsize ] , & state -> buffer [ i * stride ] , state -> xsize ) ; } } state -> shuffle ( ( UINT8 * ) im -> image [ state -> y + state -> yoff ] + state -> xoff * im -> pixelsize , state -> buffer , state -> xsize ) ; state -> x = 0 ; if ( ++ state -> y >= state -> ysize ) { <S2SV_ModEnd> return - 1 <S2SV_ModStart> 1 ; } <S2SV_ModEnd> } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 int main ( int argc , char * * argv ) { int i , n_valid , do_write , do_scrub ; char * c , * dname , * name ; DIR * dir ; FILE * fp ; pdf_t * pdf ; pdf_flag_t flags ; if ( argc < 2 ) usage ( ) ; do_write = do_scrub = flags = 0 ; name = NULL ; for ( i = 1 ; i < argc ; i ++ ) { if ( strncmp ( argv [ i ] , \"-w\" , 2 ) == 0 ) do_write = 1 ; else if ( strncmp ( argv [ i ] , \"-i\" , 2 ) == 0 ) flags |= PDF_FLAG_DISP_CREATOR ; else if ( strncmp ( argv [ i ] , \"-q\" , 2 ) == 0 ) flags |= PDF_FLAG_QUIET ; else if ( strncmp ( argv [ i ] , \"-s\" , 2 ) == 0 ) do_scrub = 1 ; else if ( argv [ i ] [ 0 ] != '-' ) name = argv [ i ] ; else if ( argv [ i ] [ 0 ] == '-' ) usage ( ) ; } if ( ! name ) usage ( ) ; if ( ! ( fp = fopen ( name , \"r\" ) ) ) { ERR ( \"Could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , argv [ 1 ] ) ; return - 1 ; } else if ( ! pdf_is_pdf ( fp ) ) { ERR ( \"\\'%s\\'<S2SV_blank>specified<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>PDF\\\\n\" , name ) ; fclose ( fp ) ; return - 1 ; } if ( ! ( pdf = init_pdf ( fp , name ) ) ) { fclose ( fp ) ; return - 1 ; } for ( i = 0 , n_valid = 0 ; i < pdf -> n_xrefs ; i ++ ) if ( pdf -> xrefs [ i ] . version ) ++ n_valid ; if ( n_valid < 2 ) { if ( ! ( flags & ( PDF_FLAG_QUIET | PDF_FLAG_DISP_CREATOR ) ) ) printf ( \"%s:<S2SV_blank>There<S2SV_blank>is<S2SV_blank>only<S2SV_blank>one<S2SV_blank>version<S2SV_blank>of<S2SV_blank>this<S2SV_blank>PDF\\\\n\" , pdf -> name ) ; if ( do_write ) { fclose ( fp ) ; pdf_delete ( pdf ) ; return 0 ; } } dname = NULL ; if ( do_write ) { if ( ( c = strrchr ( name , '/' ) ) ) name = c + 1 ; if ( ( c = strrchr ( name , '.' ) ) ) * c = '\\\\0' ; <S2SV_StartBug> dname = malloc ( strlen ( name ) + 16 ) ; <S2SV_EndBug> sprintf ( dname , \"%s-versions\" , name ) ; if ( ! ( dir = opendir ( dname ) ) ) mkdir ( dname , S_IRWXU ) ; else { ERR ( \"This<S2SV_blank>directory<S2SV_blank>already<S2SV_blank>exists,<S2SV_blank>PDF<S2SV_blank>version<S2SV_blank>extraction<S2SV_blank>will<S2SV_blank>\" \"not<S2SV_blank>occur.\\\\n\" ) ; fclose ( fp ) ; closedir ( dir ) ; free ( dname ) ; pdf_delete ( pdf ) ; return - 1 ; } for ( i = 0 ; i < pdf -> n_xrefs ; i ++ ) if ( pdf -> xrefs [ i ] . version ) write_version ( fp , name , dname , & pdf -> xrefs [ i ] ) ; } pdf_summarize ( fp , pdf , dname , flags ) ; if ( do_scrub ) scrub_document ( fp , pdf ) ; if ( flags & PDF_FLAG_DISP_CREATOR ) display_creator ( fp , pdf ) ; fclose ( fp ) ; free ( dname ) ; pdf_delete ( pdf ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dname = safe_calloc <S2SV_ModEnd> ( strlen (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16995\n\n```\nCWE-119 static int check_alu_op ( struct bpf_verifier_env * env , struct bpf_insn * insn ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; int err ; if ( opcode == BPF_END || opcode == BPF_NEG ) { if ( opcode == BPF_NEG ) { if ( BPF_SRC ( insn -> code ) != 0 || insn -> src_reg != BPF_REG_0 || insn -> off != 0 || insn -> imm != 0 ) { verbose ( env , \"BPF_NEG<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 || ( insn -> imm != 16 && insn -> imm != 32 && insn -> imm != 64 ) || BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { verbose ( env , \"BPF_END<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , insn -> dst_reg ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>prohibited\\\\n\" , insn -> dst_reg ) ; return - EACCES ; } err = check_reg_arg ( env , insn -> dst_reg , DST_OP ) ; if ( err ) return err ; } else if ( opcode == BPF_MOV ) { if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 || insn -> off != 0 ) { verbose ( env , \"BPF_MOV<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 ) { verbose ( env , \"BPF_MOV<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , DST_OP ) ; if ( err ) return err ; if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { regs [ insn -> dst_reg ] = regs [ insn -> src_reg ] ; regs [ insn -> dst_reg ] . live |= REG_LIVE_WRITTEN ; } else { if ( is_pointer_value ( env , insn -> src_reg ) ) { verbose ( env , \"R%d<S2SV_blank>partial<S2SV_blank>copy<S2SV_blank>of<S2SV_blank>pointer\\\\n\" , insn -> src_reg ) ; return - EACCES ; } mark_reg_unknown ( env , regs , insn -> dst_reg ) ; regs [ insn -> dst_reg ] . var_off = tnum_cast ( regs [ insn -> dst_reg ] . var_off , 4 ) ; __update_reg_bounds ( & regs [ insn -> dst_reg ] ) ; } } else { regs [ insn -> dst_reg ] . type = SCALAR_VALUE ; <S2SV_StartBug> __mark_reg_known ( regs + insn -> dst_reg , insn -> imm ) ; <S2SV_EndBug> } } else if ( opcode > BPF_END ) { verbose ( env , \"invalid<S2SV_blank>BPF_ALU<S2SV_blank>opcode<S2SV_blank>%x\\\\n\" , opcode ) ; return - EINVAL ; } else { if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 || insn -> off != 0 ) { verbose ( env , \"BPF_ALU<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 ) { verbose ( env , \"BPF_ALU<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( ( opcode == BPF_MOD || opcode == BPF_DIV ) && BPF_SRC ( insn -> code ) == BPF_K && insn -> imm == 0 ) { verbose ( env , \"div<S2SV_blank>by<S2SV_blank>zero\\\\n\" ) ; return - EINVAL ; } if ( ( opcode == BPF_LSH || opcode == BPF_RSH || opcode == BPF_ARSH ) && BPF_SRC ( insn -> code ) == BPF_K ) { int size = BPF_CLASS ( insn -> code ) == BPF_ALU64 ? 64 : 32 ; if ( insn -> imm < 0 || insn -> imm >= size ) { verbose ( env , \"invalid<S2SV_blank>shift<S2SV_blank>%d\\\\n\" , insn -> imm ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; return adjust_reg_min_max_vals ( env , insn ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = SCALAR_VALUE ; if ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { <S2SV_ModStart> -> dst_reg , insn -> imm ) ; } else { __mark_reg_known ( regs + insn -> dst_reg , ( u32 ) insn -> imm ) ; } <S2SV_ModEnd> } } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-3844\n\n```\nCWE-120 void gtkui_icmp_redir ( void ) { GtkWidget * dialog , * table , * hbox , * image , * label , * entry1 , * entry2 , * frame ; gint response = 0 ; DEBUG_MSG ( \"gtk_icmp_redir\" ) ; dialog = gtk_dialog_new_with_buttons ( \"MITM<S2SV_blank>Attack:<S2SV_blank>ICMP<S2SV_blank>Redirect\" , GTK_WINDOW ( window ) , GTK_DIALOG_MODAL , GTK_STOCK_OK , GTK_RESPONSE_OK , GTK_STOCK_CANCEL , GTK_RESPONSE_CANCEL , NULL ) ; gtk_container_set_border_width ( GTK_CONTAINER ( dialog ) , 5 ) ; gtk_dialog_set_has_separator ( GTK_DIALOG ( dialog ) , FALSE ) ; hbox = gtk_hbox_new ( FALSE , 5 ) ; gtk_box_pack_start ( GTK_BOX ( GTK_DIALOG ( dialog ) -> vbox ) , hbox , FALSE , FALSE , 0 ) ; gtk_widget_show ( hbox ) ; image = gtk_image_new_from_stock ( GTK_STOCK_DIALOG_QUESTION , GTK_ICON_SIZE_DIALOG ) ; gtk_misc_set_alignment ( GTK_MISC ( image ) , 0.5 , 0.1 ) ; gtk_box_pack_start ( GTK_BOX ( hbox ) , image , FALSE , FALSE , 5 ) ; gtk_widget_show ( image ) ; frame = gtk_frame_new ( \"Gateway<S2SV_blank>Information\" ) ; gtk_container_set_border_width ( GTK_CONTAINER ( frame ) , 5 ) ; gtk_box_pack_start ( GTK_BOX ( hbox ) , frame , TRUE , TRUE , 0 ) ; gtk_widget_show ( frame ) ; table = gtk_table_new ( 2 , 2 , FALSE ) ; gtk_table_set_row_spacings ( GTK_TABLE ( table ) , 5 ) ; gtk_table_set_col_spacings ( GTK_TABLE ( table ) , 5 ) ; gtk_container_set_border_width ( GTK_CONTAINER ( table ) , 8 ) ; gtk_container_add ( GTK_CONTAINER ( frame ) , table ) ; gtk_widget_show ( table ) ; label = gtk_label_new ( \"MAC<S2SV_blank>Address\" ) ; gtk_misc_set_alignment ( GTK_MISC ( label ) , 0 , 0.5 ) ; gtk_table_attach ( GTK_TABLE ( table ) , label , 0 , 1 , 0 , 1 , GTK_FILL , GTK_FILL , 0 , 0 ) ; gtk_widget_show ( label ) ; entry1 = gtk_entry_new ( ) ; gtk_entry_set_max_length ( GTK_ENTRY ( entry1 ) , ETH_ASCII_ADDR_LEN ) ; gtk_table_attach_defaults ( GTK_TABLE ( table ) , entry1 , 1 , 2 , 0 , 1 ) ; gtk_widget_show ( entry1 ) ; label = gtk_label_new ( \"IP<S2SV_blank>Address\" ) ; gtk_misc_set_alignment ( GTK_MISC ( label ) , 0 , 0.5 ) ; gtk_table_attach ( GTK_TABLE ( table ) , label , 0 , 1 , 1 , 2 , GTK_FILL , GTK_FILL , 0 , 0 ) ; gtk_widget_show ( label ) ; entry2 = gtk_entry_new ( ) ; gtk_entry_set_max_length ( GTK_ENTRY ( entry2 ) , IP6_ASCII_ADDR_LEN ) ; gtk_table_attach_defaults ( GTK_TABLE ( table ) , entry2 , 1 , 2 , 1 , 2 ) ; gtk_widget_show ( entry2 ) ; response = gtk_dialog_run ( GTK_DIALOG ( dialog ) ) ; if ( response == GTK_RESPONSE_OK ) { gtk_widget_hide ( dialog ) ; snprintf ( params , 6 , \"icmp:\" ) ; <S2SV_StartBug> strncat ( params , gtk_entry_get_text ( GTK_ENTRY ( entry1 ) ) , PARAMS_LEN ) ; <S2SV_EndBug> <S2SV_StartBug> strncat ( params , \"/\" , PARAMS_LEN ) ; <S2SV_EndBug> <S2SV_StartBug> strncat ( params , gtk_entry_get_text ( GTK_ENTRY ( entry2 ) ) , PARAMS_LEN ) ; <S2SV_EndBug> gtkui_start_mitm ( ) ; } gtk_widget_destroy ( dialog ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) , ETH_ASCII_ADDR_LEN <S2SV_ModEnd> ) ; strncat <S2SV_ModStart> , \"/\" , 1 <S2SV_ModEnd> ) ; strncat <S2SV_ModStart> ) ) , IP6_ASCII_ADDR_LEN <S2SV_ModEnd> ) ; gtkui_start_mitm\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int skt_write ( int fd , const void * p , size_t len ) { int sent ; struct pollfd pfd ; FNLOG ( ) ; pfd . fd = fd ; pfd . events = POLLOUT ; <S2SV_StartBug> if ( poll ( & pfd , 1 , 500 ) == 0 ) <S2SV_EndBug> return 0 ; ts_log ( \"skt_write\" , len , NULL ) ; <S2SV_StartBug> if ( ( sent = send ( fd , p , len , MSG_NOSIGNAL ) ) == - 1 ) <S2SV_EndBug> { ERROR ( \"write<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>errno=%d\\\\n\" , errno ) ; return - 1 ; } return sent ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> 1 , 500 ) <S2SV_ModStart> ( sent = TEMP_FAILURE_RETRY ( <S2SV_ModStart> len , MSG_NOSIGNAL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static char * fp_readl ( char * s , int size , struct tok_state * tok ) { PyObject * bufobj ; const char * buf ; Py_ssize_t buflen ; assert ( size > 0 ) ; size -- ; if ( tok -> decoding_buffer ) { bufobj = tok -> decoding_buffer ; Py_INCREF ( bufobj ) ; } else { <S2SV_StartBug> bufobj = PyObject_CallObject ( tok -> decoding_readline , NULL ) ; <S2SV_EndBug> if ( bufobj == NULL ) goto error ; } if ( PyUnicode_CheckExact ( bufobj ) ) { buf = PyUnicode_AsUTF8AndSize ( bufobj , & buflen ) ; if ( buf == NULL ) { goto error ; } } else { buf = PyByteArray_AsString ( bufobj ) ; if ( buf == NULL ) { goto error ; } buflen = PyByteArray_GET_SIZE ( bufobj ) ; } Py_XDECREF ( tok -> decoding_buffer ) ; if ( buflen > size ) { tok -> decoding_buffer = PyByteArray_FromStringAndSize ( buf + size , buflen - size ) ; if ( tok -> decoding_buffer == NULL ) goto error ; buflen = size ; } else tok -> decoding_buffer = NULL ; memcpy ( s , buf , buflen ) ; s [ buflen ] = '\\\\0' ; if ( buflen == 0 ) s = NULL ; Py_DECREF ( bufobj ) ; return s ; error : Py_XDECREF ( bufobj ) ; return error_ret ( tok ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { bufobj = _PyObject_CallNoArg <S2SV_ModEnd> ( tok -> <S2SV_ModStart> tok -> decoding_readline <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20856\n\n```\nCWE-416 int blk_init_allocated_queue ( struct request_queue * q ) { WARN_ON_ONCE ( q -> mq_ops ) ; q -> fq = blk_alloc_flush_queue ( q , NUMA_NO_NODE , q -> cmd_size ) ; if ( ! q -> fq ) return - ENOMEM ; if ( q -> init_rq_fn && q -> init_rq_fn ( q , q -> fq -> flush_rq , GFP_KERNEL ) ) goto out_free_flush_queue ; if ( blk_init_rl ( & q -> root_rl , q , GFP_KERNEL ) ) goto out_exit_flush_rq ; INIT_WORK ( & q -> timeout_work , blk_timeout_work ) ; q -> queue_flags |= QUEUE_FLAG_DEFAULT ; blk_queue_make_request ( q , blk_queue_bio ) ; q -> sg_reserved_size = INT_MAX ; if ( elevator_init ( q ) ) goto out_exit_flush_rq ; return 0 ; out_exit_flush_rq : if ( q -> exit_rq_fn ) q -> exit_rq_fn ( q , q -> fq -> flush_rq ) ; out_free_flush_queue : blk_free_flush_queue ( q -> fq ) ; <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fq ) ; q -> fq = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6906\n\n```\nCWE-125 int main ( ) { <S2SV_StartBug> gdImagePtr im ; <S2SV_EndBug> char * buffer ; size_t size ; size = read_test_file ( & buffer , \"heap_overflow.tga\" ) ; im = gdImageCreateFromTgaPtr ( size , ( void * ) buffer ) ; gdTestAssert ( im == NULL ) ; free ( buffer ) ; return gdNumFailures ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) { check_file ( \"heap_overflow_1.tga\" ) ; check_file ( \"heap_overflow_2.tga\" <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 char * Ta3Tokenizer_FindEncodingFilename ( int fd , PyObject * filename ) { struct tok_state * tok ; FILE * fp ; char * p_start = NULL , * p_end = NULL , * encoding = NULL ; # ifndef PGEN <S2SV_StartBug> # if PY_MINOR_VERSION >= 4 <S2SV_EndBug> fd = _Py_dup ( fd ) ; <S2SV_StartBug> # endif <S2SV_EndBug> # else fd = dup ( fd ) ; # endif if ( fd < 0 ) { return NULL ; } fp = fdopen ( fd , \"r\" ) ; if ( fp == NULL ) { return NULL ; } tok = Ta3Tokenizer_FromFile ( fp , NULL , NULL , NULL ) ; if ( tok == NULL ) { fclose ( fp ) ; return NULL ; } # ifndef PGEN if ( filename != NULL ) { Py_INCREF ( filename ) ; tok -> filename = filename ; } else { tok -> filename = PyUnicode_FromString ( \"<string>\" ) ; if ( tok -> filename == NULL ) { fclose ( fp ) ; Ta3Tokenizer_Free ( tok ) ; return encoding ; } } # endif while ( tok -> lineno < 2 && tok -> done == E_OK ) { Ta3Tokenizer_Get ( tok , & p_start , & p_end ) ; } fclose ( fp ) ; if ( tok -> encoding ) { encoding = ( char * ) PyMem_MALLOC ( strlen ( tok -> encoding ) + 1 ) ; if ( encoding ) strcpy ( encoding , tok -> encoding ) ; } Ta3Tokenizer_Free ( tok ) ; return encoding ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> # ifndef PGEN <S2SV_ModEnd> fd = _Py_dup <S2SV_ModStart> fd ) ; <S2SV_ModEnd> # else fd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4027\n\n```\nCWE-264 static int rd_build_device_space ( struct rd_dev * rd_dev ) { <S2SV_StartBug> u32 i = 0 , j , page_offset = 0 , sg_per_table , sg_tables , total_sg_needed ; <S2SV_EndBug> u32 max_sg_per_table = ( RD_MAX_ALLOCATION_SIZE / sizeof ( struct scatterlist ) ) ; <S2SV_StartBug> struct rd_dev_sg_table * sg_table ; <S2SV_EndBug> struct page * pg ; struct scatterlist * sg ; if ( rd_dev -> rd_page_count <= 0 ) { pr_err ( \"Illegal<S2SV_blank>page<S2SV_blank>count:<S2SV_blank>%u<S2SV_blank>for<S2SV_blank>Ramdisk<S2SV_blank>device\\\\n\" , rd_dev -> rd_page_count ) ; return - EINVAL ; } if ( rd_dev -> rd_flags & RDF_NULLIO ) return 0 ; total_sg_needed = rd_dev -> rd_page_count ; sg_tables = ( total_sg_needed / max_sg_per_table ) + 1 ; sg_table = kzalloc ( sg_tables * sizeof ( struct rd_dev_sg_table ) , GFP_KERNEL ) ; if ( ! sg_table ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Ramdisk\" \"<S2SV_blank>scatterlist<S2SV_blank>tables\\\\n\" ) ; return - ENOMEM ; } rd_dev -> sg_table_array = sg_table ; rd_dev -> sg_table_count = sg_tables ; <S2SV_StartBug> while ( total_sg_needed ) { <S2SV_EndBug> sg_per_table = ( total_sg_needed > max_sg_per_table ) ? max_sg_per_table : total_sg_needed ; sg = kzalloc ( sg_per_table * sizeof ( struct scatterlist ) , GFP_KERNEL ) ; if ( ! sg ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>scatterlist<S2SV_blank>array\" \"<S2SV_blank>for<S2SV_blank>struct<S2SV_blank>rd_dev\\\\n\" ) ; return - ENOMEM ; } sg_init_table ( sg , sg_per_table ) ; sg_table [ i ] . sg_table = sg ; sg_table [ i ] . rd_sg_count = sg_per_table ; sg_table [ i ] . page_start_offset = page_offset ; sg_table [ i ++ ] . page_end_offset = ( page_offset + sg_per_table ) - 1 ; for ( j = 0 ; j < sg_per_table ; j ++ ) { pg = alloc_pages ( GFP_KERNEL , 0 ) ; if ( ! pg ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>scatterlist\" \"<S2SV_blank>pages<S2SV_blank>for<S2SV_blank>struct<S2SV_blank>rd_dev_sg_table\\\\n\" ) ; return - ENOMEM ; } sg_assign_page ( & sg [ j ] , pg ) ; sg [ j ] . length = PAGE_SIZE ; } page_offset += sg_per_table ; total_sg_needed -= sg_per_table ; } pr_debug ( \"CORE_RD[%u]<S2SV_blank>-<S2SV_blank>Built<S2SV_blank>Ramdisk<S2SV_blank>Device<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>space<S2SV_blank>of\" \"<S2SV_blank>%u<S2SV_blank>pages<S2SV_blank>in<S2SV_blank>%u<S2SV_blank>tables\\\\n\" , rd_dev -> rd_host -> rd_host_id , rd_dev -> rd_dev_id , rd_dev -> rd_page_count , rd_dev -> sg_table_count ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rd_dev ) { struct rd_dev_sg_table * sg_table ; u32 <S2SV_ModEnd> sg_tables , total_sg_needed <S2SV_ModStart> ) ) ; int rc <S2SV_ModEnd> ; if ( <S2SV_ModStart> = sg_tables ; rc = rd_allocate_sgl_table ( rd_dev , sg_table , total_sg_needed , 0x00 ) ; if ( rc ) return rc ; <S2SV_ModEnd> pr_debug ( \"CORE_RD[%u]<S2SV_blank>-<S2SV_blank>Built<S2SV_blank>Ramdisk<S2SV_blank>Device<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>space<S2SV_blank>of\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-119 l_int32 gplotGenCommandFile ( GPLOT * gplot ) { <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> char * cmdstr , * plottitle , * dataname ; l_int32 i , plotstyle , nplots ; FILE * fp ; PROCNAME ( \"gplotGenCommandFile\" ) ; if ( ! gplot ) return ERROR_INT ( \"gplot<S2SV_blank>not<S2SV_blank>defined\" , procName , 1 ) ; sarrayClear ( gplot -> cmddata ) ; if ( gplot -> title ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>title<S2SV_blank>\\'%s\\'\" , gplot -> title ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } if ( gplot -> xlabel ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>xlabel<S2SV_blank>\\'%s\\'\" , gplot -> xlabel ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } if ( gplot -> ylabel ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>ylabel<S2SV_blank>\\'%s\\'\" , gplot -> ylabel ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } if ( gplot -> outformat == GPLOT_PNG ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>terminal<S2SV_blank>png;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_EndBug> gplot -> outname ) ; } else if ( gplot -> outformat == GPLOT_PS ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>terminal<S2SV_blank>postscript;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_EndBug> gplot -> outname ) ; } else if ( gplot -> outformat == GPLOT_EPS ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , <S2SV_EndBug> \"set<S2SV_blank>terminal<S2SV_blank>postscript<S2SV_blank>eps;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , gplot -> outname ) ; } else if ( gplot -> outformat == GPLOT_LATEX ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>terminal<S2SV_blank>latex;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_EndBug> gplot -> outname ) ; } sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; if ( gplot -> scaling == GPLOT_LOG_SCALE_X || gplot -> scaling == GPLOT_LOG_SCALE_X_Y ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>logscale<S2SV_blank>x\" ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } if ( gplot -> scaling == GPLOT_LOG_SCALE_Y || gplot -> scaling == GPLOT_LOG_SCALE_X_Y ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>logscale<S2SV_blank>y\" ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } nplots = sarrayGetCount ( gplot -> datanames ) ; for ( i = 0 ; i < nplots ; i ++ ) { plottitle = sarrayGetString ( gplot -> plottitles , i , L_NOCOPY ) ; dataname = sarrayGetString ( gplot -> datanames , i , L_NOCOPY ) ; numaGetIValue ( gplot -> plotstyles , i , & plotstyle ) ; if ( nplots == 1 ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"plot<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s\" , <S2SV_EndBug> dataname , plottitle , gplotstylenames [ plotstyle ] ) ; } else { if ( i == 0 ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"plot<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s,<S2SV_blank>\\\\\\\\\" , <S2SV_EndBug> dataname , plottitle , gplotstylenames [ plotstyle ] ) ; else if ( i < nplots - 1 ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s,<S2SV_blank>\\\\\\\\\" , <S2SV_EndBug> dataname , plottitle , gplotstylenames [ plotstyle ] ) ; else <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s\" , <S2SV_EndBug> dataname , plottitle , gplotstylenames [ plotstyle ] ) ; } sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } cmdstr = sarrayToString ( gplot -> cmddata , 1 ) ; if ( ( fp = fopenWriteStream ( gplot -> cmdname , \"w\" ) ) == NULL ) { LEPT_FREE ( cmdstr ) ; return ERROR_INT ( \"cmd<S2SV_blank>stream<S2SV_blank>not<S2SV_blank>opened\" , procName , 1 ) ; } fwrite ( cmdstr , 1 , strlen ( cmdstr ) , fp ) ; fclose ( fp ) ; LEPT_FREE ( cmdstr ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>title<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>xlabel<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>ylabel<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>terminal<S2SV_blank>png;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>terminal<S2SV_blank>postscript;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>terminal<S2SV_blank>postscript<S2SV_blank>eps;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>terminal<S2SV_blank>latex;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>logscale<S2SV_blank>x\" ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>logscale<S2SV_blank>y\" ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"plot<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"plot<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s,<S2SV_blank>\\\\\\\\\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s,<S2SV_blank>\\\\\\\\\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void SetLineWidth ( double w ) { <S2SV_StartBug> outpos += <S2SV_EndBug> sprintf ( outpos , \"<S2SV_blank>%12.3f<S2SV_blank>w\" , w ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> w ) { sprintf ( outputbuffer <S2SV_ModEnd> , \"<S2SV_blank>%12.3f<S2SV_blank>w\" , <S2SV_ModStart> w ) ; sendClean ( outputbuffer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18222\n\n```\nCWE-119 static int hns_gmac_get_sset_count ( int stringset ) { <S2SV_StartBug> if ( stringset == ETH_SS_STATS ) <S2SV_EndBug> return ARRAY_SIZE ( g_gmac_stats_string ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stringset == ETH_SS_STATS || stringset == ETH_SS_PRIV_FLAGS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14164\n\n```\nCWE-119 static OPJ_BOOL opj_j2k_write_first_tile_part ( opj_j2k_t * p_j2k , OPJ_BYTE * p_data , OPJ_UINT32 * p_data_written , OPJ_UINT32 p_total_data_size , opj_stream_private_t * p_stream , struct opj_event_mgr * p_manager ) { OPJ_UINT32 l_nb_bytes_written = 0 ; OPJ_UINT32 l_current_nb_bytes_written ; OPJ_BYTE * l_begin_data = 00 ; opj_tcd_t * l_tcd = 00 ; opj_cp_t * l_cp = 00 ; l_tcd = p_j2k -> m_tcd ; l_cp = & ( p_j2k -> m_cp ) ; l_tcd -> cur_pino = 0 ; p_j2k -> m_specific_param . m_encoder . m_current_poc_tile_part_number = 0 ; l_current_nb_bytes_written = 0 ; l_begin_data = p_data ; <S2SV_StartBug> if ( ! opj_j2k_write_sot ( p_j2k , p_data , & l_current_nb_bytes_written , p_stream , <S2SV_EndBug> p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; if ( ! OPJ_IS_CINEMA ( l_cp -> rsiz ) ) { # if 0 for ( compno = 1 ; compno < p_j2k -> m_private_image -> numcomps ; compno ++ ) { l_current_nb_bytes_written = 0 ; opj_j2k_write_coc_in_memory ( p_j2k , compno , p_data , & l_current_nb_bytes_written , p_manager ) ; l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_current_nb_bytes_written = 0 ; opj_j2k_write_qcc_in_memory ( p_j2k , compno , p_data , & l_current_nb_bytes_written , p_manager ) ; l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; } # endif if ( l_cp -> tcps [ p_j2k -> m_current_tile_number ] . numpocs ) { l_current_nb_bytes_written = 0 ; opj_j2k_write_poc_in_memory ( p_j2k , p_data , & l_current_nb_bytes_written , p_manager ) ; l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; } } l_current_nb_bytes_written = 0 ; if ( ! opj_j2k_write_sod ( p_j2k , l_tcd , p_data , & l_current_nb_bytes_written , p_total_data_size , p_stream , p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; * p_data_written = l_nb_bytes_written ; opj_write_bytes ( l_begin_data + 6 , l_nb_bytes_written , 4 ) ; if ( OPJ_IS_CINEMA ( l_cp -> rsiz ) ) { opj_j2k_update_tlm ( p_j2k , l_nb_bytes_written ) ; } return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , p_data , p_total_data_size ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void txfm_rd_in_plane ( MACROBLOCK * x , int * rate , int64_t * distortion , int * skippable , int64_t * sse , int64_t ref_best_rd , int plane , BLOCK_SIZE bsize , TX_SIZE tx_size , int use_fast_coef_casting ) { MACROBLOCKD * const xd = & x -> e_mbd ; const struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; <S2SV_StartBug> struct rdcost_block_args args = { 0 } ; <S2SV_EndBug> args . x = x ; args . best_rd = ref_best_rd ; <S2SV_StartBug> args . use_fast_coef_costing = use_fast_coef_casting ; <S2SV_EndBug> if ( plane == 0 ) xd -> mi [ 0 ] -> mbmi . tx_size = tx_size ; vp9_get_entropy_contexts ( bsize , tx_size , pd , args . t_above , args . t_left ) ; args . so = get_scan ( xd , tx_size , pd -> plane_type , 0 ) ; vp9_foreach_transformed_block_in_plane ( xd , bsize , plane , block_rd_txfm , & args ) ; <S2SV_StartBug> if ( args . skip ) { <S2SV_EndBug> * rate = INT_MAX ; * distortion = INT64_MAX ; * sse = INT64_MAX ; * skippable = 0 ; } else { * distortion = args . this_dist ; * rate = args . this_rate ; * sse = args . this_sse ; <S2SV_StartBug> * skippable = vp9_is_skippable_in_plane ( x , bsize , plane ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct rdcost_block_args args ; vp9_zero ( args ) <S2SV_ModEnd> ; args . <S2SV_ModStart> use_fast_coef_costing = use_fast_coef_casting ; args . skippable = 1 <S2SV_ModStart> ( args . exit_early <S2SV_ModEnd> ) { * <S2SV_ModStart> * skippable = args . skippable <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int nr_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct sockaddr_ax25 * sax = ( struct sockaddr_ax25 * ) msg -> msg_name ; size_t copied ; struct sk_buff * skb ; int er ; lock_sock ( sk ) ; if ( sk -> sk_state != TCP_ESTABLISHED ) { release_sock ( sk ) ; return - ENOTCONN ; } if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) { release_sock ( sk ) ; return er ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } er = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( er < 0 ) { skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return er ; } if ( sax != NULL ) { memset ( sax , 0 , sizeof ( * sax ) ) ; sax -> sax25_family = AF_NETROM ; skb_copy_from_linear_data_offset ( skb , 7 , sax -> sax25_call . ax25_call , AX25_ADDR_LEN ) ; <S2SV_StartBug> } <S2SV_EndBug> msg -> msg_namelen = sizeof ( * sax ) ; <S2SV_StartBug> skb_free_datagram ( sk , skb ) ; <S2SV_EndBug> release_sock ( sk ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> AX25_ADDR_LEN ) ; <S2SV_ModEnd> msg -> msg_namelen <S2SV_ModStart> sax ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2925\n\n```\nCWE-254 static inline int handle_dots ( struct nameidata * nd , int type ) { if ( type == LAST_DOTDOT ) { if ( nd -> flags & LOOKUP_RCU ) { return follow_dotdot_rcu ( nd ) ; } else <S2SV_StartBug> follow_dotdot ( nd ) ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } else return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum ltree_in ( PG_FUNCTION_ARGS ) { char * buf = ( char * ) PG_GETARG_POINTER ( 0 ) ; char * ptr ; nodeitem * list , * lptr ; int num = 0 , totallen = 0 ; int state = LTPRS_WAITNAME ; ltree * result ; ltree_level * curlevel ; int charlen ; int pos = 0 ; ptr = buf ; while ( * ptr ) { charlen = pg_mblen ( ptr ) ; if ( charlen == 1 && t_iseq ( ptr , '.' ) ) num ++ ; ptr += charlen ; } <S2SV_StartBug> list = lptr = ( nodeitem * ) palloc ( sizeof ( nodeitem ) * ( num + 1 ) ) ; <S2SV_EndBug> ptr = buf ; while ( * ptr ) { charlen = pg_mblen ( ptr ) ; if ( state == LTPRS_WAITNAME ) { if ( ISALNUM ( ptr ) ) { lptr -> start = ptr ; lptr -> wlen = 0 ; state = LTPRS_WAITDELIM ; } else UNCHAR ; } else if ( state == LTPRS_WAITDELIM ) { if ( charlen == 1 && t_iseq ( ptr , '.' ) ) { lptr -> len = ptr - lptr -> start ; if ( lptr -> wlen > 255 ) ereport ( ERROR , ( errcode ( ERRCODE_NAME_TOO_LONG ) , errmsg ( \"name<S2SV_blank>of<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) , errdetail ( \"Name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>\" \"be<S2SV_blank><<S2SV_blank>256,<S2SV_blank>in<S2SV_blank>position<S2SV_blank>%d.\" , lptr -> wlen , pos ) ) ) ; totallen += MAXALIGN ( lptr -> len + LEVEL_HDRSIZE ) ; lptr ++ ; state = LTPRS_WAITNAME ; } else if ( ! ISALNUM ( ptr ) ) UNCHAR ; } else elog ( ERROR , \"internal<S2SV_blank>error<S2SV_blank>in<S2SV_blank>parser\" ) ; ptr += charlen ; lptr -> wlen ++ ; pos ++ ; } if ( state == LTPRS_WAITDELIM ) { lptr -> len = ptr - lptr -> start ; if ( lptr -> wlen > 255 ) ereport ( ERROR , ( errcode ( ERRCODE_NAME_TOO_LONG ) , errmsg ( \"name<S2SV_blank>of<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) , errdetail ( \"Name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>\" \"be<S2SV_blank><<S2SV_blank>256,<S2SV_blank>in<S2SV_blank>position<S2SV_blank>%d.\" , lptr -> wlen , pos ) ) ) ; totallen += MAXALIGN ( lptr -> len + LEVEL_HDRSIZE ) ; lptr ++ ; } else if ( ! ( state == LTPRS_WAITNAME && lptr == list ) ) ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) , errdetail ( \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>line.\" ) ) ) ; result = ( ltree * ) palloc0 ( LTREE_HDRSIZE + totallen ) ; SET_VARSIZE ( result , LTREE_HDRSIZE + totallen ) ; result -> numlevel = lptr - list ; curlevel = LTREE_FIRST ( result ) ; lptr = list ; while ( lptr - list < result -> numlevel ) { curlevel -> len = ( uint16 ) lptr -> len ; memcpy ( curlevel -> name , lptr -> start , lptr -> len ) ; curlevel = LEVEL_NEXT ( curlevel ) ; lptr ++ ; } pfree ( list ) ; PG_RETURN_POINTER ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> charlen ; } if ( num + 1 > MaxAllocSize / sizeof ( nodeitem ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>levels<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , num + 1 , ( int ) ( MaxAllocSize / sizeof ( nodeitem ) ) ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15296\n\n```\nCWE-119 void faad_resetbits ( bitfile * ld , int bits ) { uint32_t tmp ; int words = bits >> 5 ; int remainder = bits & 0x1F ; <S2SV_StartBug> ld -> bytes_left = ld -> buffer_size - words * 4 ; <S2SV_EndBug> if ( ld -> bytes_left >= 4 ) { tmp = getdword ( & ld -> start [ words ] ) ; ld -> bytes_left -= 4 ; } else { tmp = getdword_n ( & ld -> start [ words ] , ld -> bytes_left ) ; ld -> bytes_left = 0 ; } ld -> bufa = tmp ; if ( ld -> bytes_left >= 4 ) { tmp = getdword ( & ld -> start [ words + 1 ] ) ; ld -> bytes_left -= 4 ; } else { tmp = getdword_n ( & ld -> start [ words + 1 ] , ld -> bytes_left ) ; ld -> bytes_left = 0 ; } ld -> bufb = tmp ; ld -> bits_left = 32 - remainder ; ld -> tail = & ld -> start [ words + 2 ] ; ld -> error = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & 0x1F ; if ( ld -> buffer_size < words * 4 ) ld -> bytes_left = 0 ; else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14172\n\n```\nCWE-834 static Image * ReadPSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define BoundingBox \"BoundingBox:\" # define BeginDocument \"BeginDocument:\" # define BeginXMPPacket \"<?xpacket<S2SV_blank>begin=\" # define EndXMPPacket \"<?xpacket<S2SV_blank>end=\" # define ICCProfile \"BeginICCProfile:\" # define CMYKCustomColor \"CMYKCustomColor:\" # define CMYKProcessColor \"CMYKProcessColor:\" # define DocumentMedia \"DocumentMedia:\" # define DocumentCustomColors \"DocumentCustomColors:\" # define DocumentProcessColors \"DocumentProcessColors:\" # define EndDocument \"EndDocument:\" # define HiResBoundingBox \"HiResBoundingBox:\" # define ImageData \"ImageData:\" # define PageBoundingBox \"PageBoundingBox:\" # define LanguageLevel \"LanguageLevel:\" # define PageMedia \"PageMedia:\" # define Pages \"Pages:\" # define PhotoshopProfile \"BeginPhotoshop:\" # define PostscriptLevel \"!PS-\" # define RenderPostscriptText \"<S2SV_blank><S2SV_blank>Rendering<S2SV_blank>Postscript...<S2SV_blank><S2SV_blank>\" # define SpotColor \"+<S2SV_blank>\" char command [ MagickPathExtent ] , * density , filename [ MagickPathExtent ] , geometry [ MagickPathExtent ] , input_filename [ MagickPathExtent ] , message [ MagickPathExtent ] , * options , postscript_filename [ MagickPathExtent ] ; const char * option ; const DelegateInfo * delegate_info ; GeometryInfo geometry_info ; Image * image , * next , * postscript_image ; ImageInfo * read_info ; int c , file ; MagickBooleanType cmyk , fitPage , skip , status ; MagickStatusType flags ; PointInfo delta , resolution ; RectangleInfo page ; register char * p ; register ssize_t i ; SegmentInfo bounds , hires_bounds ; short int hex_digits [ 256 ] ; size_t length ; ssize_t count , priority ; StringInfo * profile ; unsigned long columns , extent , language_level , pages , rows , scene , spotcolor ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } status = AcquireUniqueSymbolicLink ( image_info -> filename , input_filename ) ; if ( status == MagickFalse ) { ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( hex_digits , 0 , sizeof ( hex_digits ) ) ; hex_digits [ ( int ) '0' ] = 0 ; hex_digits [ ( int ) '1' ] = 1 ; hex_digits [ ( int ) '2' ] = 2 ; hex_digits [ ( int ) '3' ] = 3 ; hex_digits [ ( int ) '4' ] = 4 ; hex_digits [ ( int ) '5' ] = 5 ; hex_digits [ ( int ) '6' ] = 6 ; hex_digits [ ( int ) '7' ] = 7 ; hex_digits [ ( int ) '8' ] = 8 ; hex_digits [ ( int ) '9' ] = 9 ; hex_digits [ ( int ) 'a' ] = 10 ; hex_digits [ ( int ) 'b' ] = 11 ; hex_digits [ ( int ) 'c' ] = 12 ; hex_digits [ ( int ) 'd' ] = 13 ; hex_digits [ ( int ) 'e' ] = 14 ; hex_digits [ ( int ) 'f' ] = 15 ; hex_digits [ ( int ) 'A' ] = 10 ; hex_digits [ ( int ) 'B' ] = 11 ; hex_digits [ ( int ) 'C' ] = 12 ; hex_digits [ ( int ) 'D' ] = 13 ; hex_digits [ ( int ) 'E' ] = 14 ; hex_digits [ ( int ) 'F' ] = 15 ; delta . x = DefaultResolution ; delta . y = DefaultResolution ; if ( ( image -> resolution . x == 0.0 ) || ( image -> resolution . y == 0.0 ) ) { flags = ParseGeometry ( PSDensityGeometry , & geometry_info ) ; image -> resolution . x = geometry_info . rho ; image -> resolution . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> resolution . y = image -> resolution . x ; } if ( image_info -> density != ( char * ) NULL ) { flags = ParseGeometry ( image_info -> density , & geometry_info ) ; image -> resolution . x = geometry_info . rho ; image -> resolution . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> resolution . y = image -> resolution . x ; } ( void ) ParseAbsoluteGeometry ( PSPageGeometry , & page ) ; if ( image_info -> page != ( char * ) NULL ) ( void ) ParseAbsoluteGeometry ( image_info -> page , & page ) ; resolution = image -> resolution ; page . width = ( size_t ) ceil ( ( double ) ( page . width * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * resolution . y / delta . y ) - 0.5 ) ; ( void ) ResetMagickMemory ( & bounds , 0 , sizeof ( bounds ) ) ; ( void ) ResetMagickMemory ( command , 0 , sizeof ( command ) ) ; cmyk = image_info -> colorspace == CMYKColorspace ? MagickTrue : MagickFalse ; ( void ) ResetMagickMemory ( & hires_bounds , 0 , sizeof ( hires_bounds ) ) ; columns = 0 ; rows = 0 ; priority = 0 ; rows = 0 ; extent = 0 ; spotcolor = 0 ; language_level = 1 ; pages = ( ~ 0UL ) ; skip = MagickFalse ; p = command ; for ( c = ReadBlobByte ( image ) ; c != EOF ; c = ReadBlobByte ( image ) ) { * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MagickPathExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( BeginDocument , command , strlen ( BeginDocument ) ) == 0 ) skip = MagickTrue ; if ( LocaleNCompare ( EndDocument , command , strlen ( EndDocument ) ) == 0 ) skip = MagickFalse ; if ( skip != MagickFalse ) continue ; if ( LocaleNCompare ( PostscriptLevel , command , strlen ( PostscriptLevel ) ) == 0 ) { ( void ) SetImageProperty ( image , \"ps:Level\" , command + 4 , exception ) ; if ( GlobExpression ( command , \"*EPSF-*\" , MagickTrue ) != MagickFalse ) pages = 1 ; } if ( LocaleNCompare ( LanguageLevel , command , strlen ( LanguageLevel ) ) == 0 ) ( void ) sscanf ( command , LanguageLevel \"<S2SV_blank>%lu\" , & language_level ) ; if ( LocaleNCompare ( Pages , command , strlen ( Pages ) ) == 0 ) ( void ) sscanf ( command , Pages \"<S2SV_blank>%lu\" , & pages ) ; if ( LocaleNCompare ( ImageData , command , strlen ( ImageData ) ) == 0 ) ( void ) sscanf ( command , ImageData \"<S2SV_blank>%lu<S2SV_blank>%lu\" , & columns , & rows ) ; if ( LocaleNCompare ( ICCProfile , command , strlen ( ICCProfile ) ) == 0 ) { unsigned char * datum ; profile = AcquireStringInfo ( MagickPathExtent ) ; datum = GetStringInfoDatum ( profile ) ; for ( i = 0 ; ( c = ProfileInteger ( image , hex_digits ) ) != EOF ; i ++ ) { if ( i >= ( ssize_t ) GetStringInfoLength ( profile ) ) { SetStringInfoLength ( profile , ( size_t ) i << 1 ) ; datum = GetStringInfoDatum ( profile ) ; } datum [ i ] = ( unsigned char ) c ; } SetStringInfoLength ( profile , ( size_t ) i + 1 ) ; ( void ) SetImageProfile ( image , \"icc\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; continue ; } if ( LocaleNCompare ( PhotoshopProfile , command , strlen ( PhotoshopProfile ) ) == 0 ) { unsigned char * q ; count = ( ssize_t ) sscanf ( command , PhotoshopProfile \"<S2SV_blank>%lu\" , & extent ) ; if ( count != 1 ) continue ; length = extent ; <S2SV_StartBug> profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; <S2SV_EndBug> if ( profile != ( StringInfo * ) NULL ) { q = GetStringInfoDatum ( profile ) ; for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) * q ++ = ( unsigned char ) ProfileInteger ( image , hex_digits ) ; ( void ) SetImageProfile ( image , \"8bim\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; } continue ; } if ( LocaleNCompare ( BeginXMPPacket , command , strlen ( BeginXMPPacket ) ) == 0 ) { p = command ; profile = StringToStringInfo ( command ) ; for ( i = GetStringInfoLength ( profile ) - 1 ; c != EOF ; i ++ ) { SetStringInfoLength ( profile , i + 1 ) ; c = ReadBlobByte ( image ) ; GetStringInfoDatum ( profile ) [ i ] = ( unsigned char ) c ; * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MagickPathExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( EndXMPPacket , command , strlen ( EndXMPPacket ) ) == 0 ) break ; } SetStringInfoLength ( profile , i ) ; ( void ) SetImageProfile ( image , \"xmp\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; continue ; } length = strlen ( DocumentProcessColors ) ; if ( LocaleNCompare ( DocumentProcessColors , command , length ) == 0 ) { if ( ( GlobExpression ( command , \"*Cyan*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Magenta*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Yellow*\" , MagickTrue ) != MagickFalse ) ) cmyk = MagickTrue ; } if ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) cmyk = MagickTrue ; if ( LocaleNCompare ( CMYKProcessColor , command , strlen ( CMYKProcessColor ) ) == 0 ) cmyk = MagickTrue ; length = strlen ( DocumentCustomColors ) ; if ( ( LocaleNCompare ( DocumentCustomColors , command , length ) == 0 ) || ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) || ( LocaleNCompare ( SpotColor , command , strlen ( SpotColor ) ) == 0 ) ) { char property [ MagickPathExtent ] , * value ; register char * q ; ( void ) FormatLocaleString ( property , MagickPathExtent , \"ps:SpotColor-%.20g\" , ( double ) ( spotcolor ++ ) ) ; for ( q = command ; * q != '\\\\0' ; q ++ ) if ( isspace ( ( int ) ( unsigned char ) * q ) != 0 ) break ; value = AcquireString ( q ) ; ( void ) SubstituteString ( & value , \"(\" , \"\" ) ; ( void ) SubstituteString ( & value , \")\" , \"\" ) ; ( void ) StripString ( value ) ; ( void ) SetImageProperty ( image , property , value , exception ) ; value = DestroyString ( value ) ; continue ; } if ( image_info -> page != ( char * ) NULL ) continue ; count = 0 ; i = 0 ; if ( LocaleNCompare ( BoundingBox , command , strlen ( BoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , BoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 2 ; } if ( LocaleNCompare ( DocumentMedia , command , strlen ( DocumentMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , DocumentMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( HiResBoundingBox , command , strlen ( HiResBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , HiResBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 3 ; } if ( LocaleNCompare ( PageBoundingBox , command , strlen ( PageBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( PageMedia , command , strlen ( PageMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( ( count != 4 ) || ( i < ( ssize_t ) priority ) ) continue ; if ( ( fabs ( bounds . x2 - bounds . x1 ) <= fabs ( hires_bounds . x2 - hires_bounds . x1 ) ) || ( fabs ( bounds . y2 - bounds . y1 ) <= fabs ( hires_bounds . y2 - hires_bounds . y1 ) ) ) if ( i == ( ssize_t ) priority ) continue ; hires_bounds = bounds ; priority = i ; } if ( ( fabs ( hires_bounds . x2 - hires_bounds . x1 ) >= MagickEpsilon ) && ( fabs ( hires_bounds . y2 - hires_bounds . y1 ) >= MagickEpsilon ) ) { ( void ) FormatLocaleString ( geometry , MagickPathExtent , \"%gx%g%+.15g%+.15g\" , hires_bounds . x2 - hires_bounds . x1 , hires_bounds . y2 - hires_bounds . y1 , hires_bounds . x1 , hires_bounds . y1 ) ; ( void ) SetImageProperty ( image , \"ps:HiResBoundingBox\" , geometry , exception ) ; page . width = ( size_t ) ceil ( ( double ) ( ( hires_bounds . x2 - hires_bounds . x1 ) * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( ( hires_bounds . y2 - hires_bounds . y1 ) * resolution . y / delta . y ) - 0.5 ) ; } fitPage = MagickFalse ; option = GetImageOption ( image_info , \"eps:fit-page\" ) ; if ( option != ( char * ) NULL ) { char * page_geometry ; page_geometry = GetPageGeometry ( option ) ; flags = ParseMetaGeometry ( page_geometry , & page . x , & page . y , & page . width , & page . height ) ; if ( flags == NoValue ) { ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , OptionError , \"InvalidGeometry\" , \"`%s\\'\" , option ) ; image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } page . width = ( size_t ) ceil ( ( double ) ( page . width * image -> resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * image -> resolution . y / delta . y ) - 0.5 ) ; page_geometry = DestroyString ( page_geometry ) ; fitPage = MagickTrue ; } ( void ) CloseBlob ( image ) ; if ( IssRGBCompatibleColorspace ( image_info -> colorspace ) != MagickFalse ) cmyk = MagickFalse ; file = AcquireUniqueFileResource ( postscript_filename ) ; if ( file == - 1 ) { ThrowFileException ( exception , FileOpenError , \"UnableToOpenFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( command , \"/setpagedevice<S2SV_blank>{pop}<S2SV_blank>bind<S2SV_blank>1<S2SV_blank>index<S2SV_blank>where<S2SV_blank>{\" \"dup<S2SV_blank>wcheck<S2SV_blank>{3<S2SV_blank>1<S2SV_blank>roll<S2SV_blank>put}<S2SV_blank>{pop<S2SV_blank>def}<S2SV_blank>ifelse}<S2SV_blank>{def}<S2SV_blank>ifelse\\\\n\" \"<</UseCIEColor<S2SV_blank>true>>setpagedevice\\\\n\" , MagickPathExtent ) ; count = write ( file , command , ( unsigned int ) strlen ( command ) ) ; if ( image_info -> page == ( char * ) NULL ) { char translate_geometry [ MagickPathExtent ] ; ( void ) FormatLocaleString ( translate_geometry , MagickPathExtent , \"%g<S2SV_blank>%g<S2SV_blank>translate\\\\n\" , - bounds . x1 , - bounds . y1 ) ; count = write ( file , translate_geometry , ( unsigned int ) strlen ( translate_geometry ) ) ; } file = close ( file ) - 1 ; if ( image_info -> monochrome != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:mono\" , ( char * ) NULL , exception ) ; else if ( cmyk != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:cmyk\" , ( char * ) NULL , exception ) ; else delegate_info = GetDelegateInfo ( \"ps:alpha\" , ( char * ) NULL , exception ) ; if ( delegate_info == ( const DelegateInfo * ) NULL ) { ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } density = AcquireString ( \"\" ) ; options = AcquireString ( \"\" ) ; ( void ) FormatLocaleString ( density , MagickPathExtent , \"%gx%g\" , resolution . x , resolution . y ) ; ( void ) FormatLocaleString ( options , MagickPathExtent , \"-g%.20gx%.20g<S2SV_blank>\" , ( double ) page . width , ( double ) page . height ) ; read_info = CloneImageInfo ( image_info ) ; * read_info -> magick = '\\\\0' ; if ( read_info -> number_scenes != 0 ) { char pages [ MagickPathExtent ] ; ( void ) FormatLocaleString ( pages , MagickPathExtent , \"-dFirstPage=%.20g<S2SV_blank>\" \"-dLastPage=%.20g<S2SV_blank>\" , ( double ) read_info -> scene + 1 , ( double ) ( read_info -> scene + read_info -> number_scenes ) ) ; ( void ) ConcatenateMagickString ( options , pages , MagickPathExtent ) ; read_info -> number_scenes = 0 ; if ( read_info -> scenes != ( char * ) NULL ) * read_info -> scenes = '\\\\0' ; } if ( * image_info -> magick == 'E' ) { option = GetImageOption ( image_info , \"eps:use-cropbox\" ) ; if ( ( option == ( const char * ) NULL ) || ( IsStringTrue ( option ) != MagickFalse ) ) ( void ) ConcatenateMagickString ( options , \"-dEPSCrop<S2SV_blank>\" , MagickPathExtent ) ; if ( fitPage != MagickFalse ) ( void ) ConcatenateMagickString ( options , \"-dEPSFitPage<S2SV_blank>\" , MagickPathExtent ) ; } ( void ) CopyMagickString ( filename , read_info -> filename , MagickPathExtent ) ; ( void ) AcquireUniqueFilename ( filename ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; ( void ) ConcatenateMagickString ( filename , \"%d\" , MagickPathExtent ) ; ( void ) FormatLocaleString ( command , MagickPathExtent , GetDelegateCommands ( delegate_info ) , read_info -> antialias != MagickFalse ? 4 : 1 , read_info -> antialias != MagickFalse ? 4 : 1 , density , options , filename , postscript_filename , input_filename ) ; options = DestroyString ( options ) ; density = DestroyString ( density ) ; * message = '\\\\0' ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; ( void ) InterpretImageFilename ( image_info , image , filename , 1 , read_info -> filename , exception ) ; if ( ( status == MagickFalse ) || ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) ) { ( void ) ConcatenateMagickString ( command , \"<S2SV_blank>-c<S2SV_blank>showpage\" , MagickPathExtent ) ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; } ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; ( void ) RelinquishUniqueFileResource ( input_filename ) ; postscript_image = ( Image * ) NULL ; if ( status == MagickFalse ) for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename , exception ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; } else for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename , exception ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; read_info -> blob = NULL ; read_info -> length = 0 ; next = ReadImage ( read_info , exception ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; if ( next == ( Image * ) NULL ) break ; AppendImageToList ( & postscript_image , next ) ; } ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( postscript_image == ( Image * ) NULL ) { if ( * message != '\\\\0' ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , DelegateError , \"PostscriptDelegateFailed\" , \"`%s\\'\" , message ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( LocaleCompare ( postscript_image -> magick , \"BMP\" ) == 0 ) { Image * cmyk_image ; cmyk_image = ConsolidateCMYKImages ( postscript_image , exception ) ; if ( cmyk_image != ( Image * ) NULL ) { postscript_image = DestroyImageList ( postscript_image ) ; postscript_image = cmyk_image ; } } if ( image_info -> number_scenes != 0 ) { Image * clone_image ; for ( i = 0 ; i < ( ssize_t ) image_info -> scene ; i ++ ) { clone_image = CloneImage ( postscript_image , 1 , 1 , MagickTrue , exception ) ; if ( clone_image != ( Image * ) NULL ) PrependImageToList ( & postscript_image , clone_image ) ; } } do { ( void ) CopyMagickString ( postscript_image -> filename , filename , MagickPathExtent ) ; ( void ) CopyMagickString ( postscript_image -> magick , image -> magick , MagickPathExtent ) ; if ( columns != 0 ) postscript_image -> magick_columns = columns ; if ( rows != 0 ) postscript_image -> magick_rows = rows ; postscript_image -> page = page ; ( void ) CloneImageProfiles ( postscript_image , image ) ; ( void ) CloneImageProperties ( postscript_image , image ) ; next = SyncNextImageInList ( postscript_image ) ; if ( next != ( Image * ) NULL ) postscript_image = next ; } while ( next != ( Image * ) NULL ) ; image = DestroyImageList ( image ) ; scene = 0 ; for ( next = GetFirstImageInList ( postscript_image ) ; next != ( Image * ) NULL ; ) { next -> scene = scene ++ ; next = GetNextImageInList ( next ) ; } return ( GetFirstImageInList ( postscript_image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = extent ; if ( length > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19083\n\n```\nCWE-401 struct clock_source * dce100_clock_source_create ( struct dc_context * ctx , struct dc_bios * bios , enum clock_source_id id , const struct dce110_clk_src_regs * regs , bool dp_clk_src ) { struct dce110_clk_src * clk_src = kzalloc ( sizeof ( struct dce110_clk_src ) , GFP_KERNEL ) ; if ( ! clk_src ) return NULL ; if ( dce110_clk_src_construct ( clk_src , ctx , bios , id , regs , & cs_shift , & cs_mask ) ) { clk_src -> base . dp_clk_src = dp_clk_src ; return & clk_src -> base ; } <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base ; } kfree ( clk_src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1444\n\n```\nCWE-399 static int fst_get_iface ( struct fst_card_info * card , struct fst_port_info * port , struct ifreq * ifr ) { sync_serial_settings sync ; int i ; switch ( port -> hwif ) { case E1 : ifr -> ifr_settings . type = IF_IFACE_E1 ; break ; case T1 : ifr -> ifr_settings . type = IF_IFACE_T1 ; break ; case V35 : ifr -> ifr_settings . type = IF_IFACE_V35 ; break ; case V24 : ifr -> ifr_settings . type = IF_IFACE_V24 ; break ; case X21D : ifr -> ifr_settings . type = IF_IFACE_X21D ; break ; case X21 : default : ifr -> ifr_settings . type = IF_IFACE_X21 ; break ; } if ( ifr -> ifr_settings . size == 0 ) { return 0 ; } if ( ifr -> ifr_settings . size < sizeof ( sync ) ) { return - ENOMEM ; } i = port -> index ; <S2SV_StartBug> sync . clock_rate = FST_RDL ( card , portConfig [ i ] . lineSpeed ) ; <S2SV_EndBug> sync . clock_type = FST_RDB ( card , portConfig [ i ] . internalClock ) == INTCLK ? CLOCK_INT : CLOCK_EXT ; sync . loopback = 0 ; if ( copy_to_user ( ifr -> ifr_settings . ifs_ifsu . sync , & sync , sizeof ( sync ) ) ) { return - EFAULT ; } ifr -> ifr_settings . size = sizeof ( sync ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> index ; memset ( & sync , 0 , sizeof ( sync ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8133\n\n```\nCWE-264 int regset_tls_set ( struct task_struct * target , const struct user_regset * regset , unsigned int pos , unsigned int count , const void * kbuf , const void __user * ubuf ) { struct user_desc infobuf [ GDT_ENTRY_TLS_ENTRIES ] ; const struct user_desc * info ; <S2SV_StartBug> if ( pos >= GDT_ENTRY_TLS_ENTRIES * sizeof ( struct user_desc ) || <S2SV_EndBug> ( pos % sizeof ( struct user_desc ) ) != 0 || ( count % sizeof ( struct user_desc ) ) != 0 ) return - EINVAL ; if ( kbuf ) info = kbuf ; else if ( __copy_from_user ( infobuf , ubuf , count ) ) return - EFAULT ; else info = infobuf ; <S2SV_StartBug> set_tls_desc ( target , <S2SV_EndBug> GDT_ENTRY_TLS_MIN + ( pos / sizeof ( struct user_desc ) ) , info , count / sizeof ( struct user_desc ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * info ; int i ; <S2SV_ModStart> = infobuf ; for ( i = 0 ; i < count / sizeof ( struct user_desc ) ; i ++ ) if ( ! tls_desc_okay ( info + i ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11411\n\n```\nCWE-119 static void numtostr ( js_State * J , const char * fmt , int w , double n ) { <S2SV_StartBug> char buf [ 32 ] , * e ; <S2SV_EndBug> sprintf ( buf , fmt , w , n ) ; e = strchr ( buf , 'e' ) ; if ( e ) { int exp = atoi ( e + 1 ) ; sprintf ( e , \"e%+d\" , exp ) ; } js_pushstring ( J , buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ 50 <S2SV_ModEnd> ] , *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1331\n\n```\nCWE-59 static char * lxclock_name ( const char * p , const char * n ) { int ret ; int len ; char * dest ; char * rundir ; <S2SV_StartBug> len = strlen ( \"/lock/lxc/\" ) + strlen ( n ) + strlen ( p ) + 3 ; <S2SV_EndBug> rundir = get_rundir ( ) ; if ( ! rundir ) return NULL ; len += strlen ( rundir ) ; if ( ( dest = malloc ( len ) ) == NULL ) { free ( rundir ) ; return NULL ; } <S2SV_StartBug> ret = snprintf ( dest , len , \"%s/lock/lxc/%s\" , rundir , p ) ; <S2SV_EndBug> if ( ret < 0 || ret >= len ) { free ( dest ) ; free ( rundir ) ; return NULL ; } ret = mkdir_p ( dest , 0755 ) ; if ( ret < 0 ) { <S2SV_StartBug> int l2 = 22 + strlen ( n ) + strlen ( p ) ; <S2SV_EndBug> if ( l2 > len ) { char * d ; d = realloc ( dest , l2 ) ; if ( ! d ) { free ( dest ) ; free ( rundir ) ; return NULL ; } len = l2 ; dest = d ; } ret = snprintf ( dest , len , \"/tmp/%d/lxc%s\" , geteuid ( ) , p ) ; if ( ret < 0 || ret >= len ) { free ( dest ) ; <S2SV_StartBug> free ( rundir ) ; <S2SV_EndBug> return NULL ; } ret = mkdir_p ( dest , 0755 ) ; if ( ret < 0 ) { free ( dest ) ; free ( rundir ) ; return NULL ; } ret = snprintf ( dest , len , \"/tmp/%d/lxc%s/.%s\" , geteuid ( ) , p , n ) ; } else ret = snprintf ( dest , len , \"%s/lock/lxc/%s/.%s\" , rundir , p , n ) ; free ( rundir ) ; if ( ret < 0 || ret >= len ) { free ( dest ) ; return NULL ; } return dest ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = strlen ( \"/lxc/lock/\" <S2SV_ModEnd> ) + strlen <S2SV_ModStart> , len , \"%s/lxc/lock/%s\" <S2SV_ModEnd> , rundir , <S2SV_ModStart> 0 ) { free ( dest ) ; free ( rundir ) ; return NULL ; } ret = snprintf ( dest , len , \"%s/lxc/lock/%s/.%s\" , rundir , p , n ) ; free ( rundir <S2SV_ModEnd> ) ; if <S2SV_ModStart> dest ) ; <S2SV_ModEnd> return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9584\n\n```\nCWE-20 static int parse_rock_ridge_inode_internal ( struct iso_directory_record * de , struct inode * inode , int flags ) { int symlink_len = 0 ; int cnt , sig ; unsigned int reloc_block ; struct inode * reloc ; struct rock_ridge * rr ; int rootflag ; struct rock_state rs ; int ret = 0 ; if ( ! ISOFS_SB ( inode -> i_sb ) -> s_rock ) return 0 ; init_rock_state ( & rs , inode ) ; setup_rock_ridge ( de , inode , & rs ) ; if ( flags & RR_REGARD_XA ) { rs . chr += 14 ; rs . len -= 14 ; if ( rs . len < 0 ) rs . len = 0 ; } repeat : while ( rs . len > 2 ) { rr = ( struct rock_ridge * ) rs . chr ; if ( rr -> len < 3 ) goto out ; sig = isonum_721 ( rs . chr ) ; if ( rock_check_overflow ( & rs , sig ) ) goto eio ; rs . chr += rr -> len ; rs . len -= rr -> len ; if ( rs . len < 0 ) goto out ; switch ( sig ) { # ifndef CONFIG_ZISOFS case SIG ( 'R' , 'R' ) : if ( ( rr -> u . RR . flags [ 0 ] & ( RR_PX | RR_TF | RR_SL | RR_CL ) ) == 0 ) goto out ; break ; # endif case SIG ( 'S' , 'P' ) : if ( check_sp ( rr , inode ) ) goto out ; break ; case SIG ( 'C' , 'E' ) : rs . cont_extent = isonum_733 ( rr -> u . CE . extent ) ; rs . cont_offset = isonum_733 ( rr -> u . CE . offset ) ; rs . cont_size = isonum_733 ( rr -> u . CE . size ) ; break ; case SIG ( 'E' , 'R' ) : <S2SV_StartBug> ISOFS_SB ( inode -> i_sb ) -> s_rock = 1 ; <S2SV_EndBug> printk ( KERN_DEBUG \"ISO<S2SV_blank>9660<S2SV_blank>Extensions:<S2SV_blank>\" ) ; { int p ; for ( p = 0 ; p < rr -> u . ER . len_id ; p ++ ) printk ( \"%c\" , rr -> u . ER . data [ p ] ) ; } printk ( \"\\\\n\" ) ; break ; case SIG ( 'P' , 'X' ) : inode -> i_mode = isonum_733 ( rr -> u . PX . mode ) ; set_nlink ( inode , isonum_733 ( rr -> u . PX . n_links ) ) ; i_uid_write ( inode , isonum_733 ( rr -> u . PX . uid ) ) ; i_gid_write ( inode , isonum_733 ( rr -> u . PX . gid ) ) ; break ; case SIG ( 'P' , 'N' ) : { int high , low ; high = isonum_733 ( rr -> u . PN . dev_high ) ; low = isonum_733 ( rr -> u . PN . dev_low ) ; if ( ( low & ~ 0xff ) && high == 0 ) { inode -> i_rdev = MKDEV ( low >> 8 , low & 0xff ) ; } else { inode -> i_rdev = MKDEV ( high , low ) ; } } break ; case SIG ( 'T' , 'F' ) : cnt = 0 ; if ( rr -> u . TF . flags & TF_CREATE ) { inode -> i_ctime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_ctime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_MODIFY ) { inode -> i_mtime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_mtime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_ACCESS ) { inode -> i_atime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_atime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_ATTRIBUTES ) { inode -> i_ctime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_ctime . tv_nsec = 0 ; } break ; case SIG ( 'S' , 'L' ) : { int slen ; struct SL_component * slp ; struct SL_component * oldslp ; slen = rr -> len - 5 ; slp = & rr -> u . SL . link ; inode -> i_size = symlink_len ; while ( slen > 1 ) { rootflag = 0 ; switch ( slp -> flags & ~ 1 ) { case 0 : inode -> i_size += slp -> len ; break ; case 2 : inode -> i_size += 1 ; break ; case 4 : inode -> i_size += 2 ; break ; case 8 : rootflag = 1 ; inode -> i_size += 1 ; break ; default : printk ( \"Symlink<S2SV_blank>component<S2SV_blank>flag<S2SV_blank>\" \"not<S2SV_blank>implemented\\\\n\" ) ; } slen -= slp -> len + 2 ; oldslp = slp ; slp = ( struct SL_component * ) ( ( ( char * ) slp ) + slp -> len + 2 ) ; if ( slen < 2 ) { if ( ( ( rr -> u . SL . flags & 1 ) != 0 ) && ( ( oldslp -> flags & 1 ) == 0 ) ) inode -> i_size += 1 ; break ; } if ( ! rootflag && ( oldslp -> flags & 1 ) == 0 ) inode -> i_size += 1 ; } } symlink_len = inode -> i_size ; break ; case SIG ( 'R' , 'E' ) : printk ( KERN_WARNING \"Attempt<S2SV_blank>to<S2SV_blank>read<S2SV_blank>inode<S2SV_blank>for<S2SV_blank>\" \"relocated<S2SV_blank>directory\\\\n\" ) ; goto out ; case SIG ( 'C' , 'L' ) : if ( flags & RR_RELOC_DE ) { printk ( KERN_ERR \"ISOFS:<S2SV_blank>Recursive<S2SV_blank>directory<S2SV_blank>relocation<S2SV_blank>\" \"is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; goto eio ; } reloc_block = isonum_733 ( rr -> u . CL . location ) ; if ( reloc_block == ISOFS_I ( inode ) -> i_iget5_block && ISOFS_I ( inode ) -> i_iget5_offset == 0 ) { printk ( KERN_ERR \"ISOFS:<S2SV_blank>Directory<S2SV_blank>relocation<S2SV_blank>points<S2SV_blank>to<S2SV_blank>\" \"itself\\\\n\" ) ; goto eio ; } ISOFS_I ( inode ) -> i_first_extent = reloc_block ; reloc = isofs_iget_reloc ( inode -> i_sb , reloc_block , 0 ) ; if ( IS_ERR ( reloc ) ) { ret = PTR_ERR ( reloc ) ; goto out ; } inode -> i_mode = reloc -> i_mode ; set_nlink ( inode , reloc -> i_nlink ) ; inode -> i_uid = reloc -> i_uid ; inode -> i_gid = reloc -> i_gid ; inode -> i_rdev = reloc -> i_rdev ; inode -> i_size = reloc -> i_size ; inode -> i_blocks = reloc -> i_blocks ; inode -> i_atime = reloc -> i_atime ; inode -> i_ctime = reloc -> i_ctime ; inode -> i_mtime = reloc -> i_mtime ; iput ( reloc ) ; break ; # ifdef CONFIG_ZISOFS case SIG ( 'Z' , 'F' ) : { int algo ; if ( ISOFS_SB ( inode -> i_sb ) -> s_nocompress ) break ; algo = isonum_721 ( rr -> u . ZF . algorithm ) ; if ( algo == SIG ( 'p' , 'z' ) ) { int block_shift = isonum_711 ( & rr -> u . ZF . parms [ 1 ] ) ; if ( block_shift > 17 ) { printk ( KERN_WARNING \"isofs:<S2SV_blank>\" \"Can\\'t<S2SV_blank>handle<S2SV_blank>ZF<S2SV_blank>block<S2SV_blank>\" \"size<S2SV_blank>of<S2SV_blank>2^%d\\\\n\" , block_shift ) ; } else { ISOFS_I ( inode ) -> i_file_format = isofs_file_compressed ; ISOFS_I ( inode ) -> i_format_parm [ 0 ] = isonum_711 ( & rr -> u . ZF . parms [ 0 ] ) ; ISOFS_I ( inode ) -> i_format_parm [ 1 ] = isonum_711 ( & rr -> u . ZF . parms [ 1 ] ) ; inode -> i_size = isonum_733 ( rr -> u . ZF . real_size ) ; } } else { printk ( KERN_WARNING \"isofs:<S2SV_blank>Unknown<S2SV_blank>ZF<S2SV_blank>compression<S2SV_blank>\" \"algorithm:<S2SV_blank>%c%c\\\\n\" , rr -> u . ZF . algorithm [ 0 ] , rr -> u . ZF . algorithm [ 1 ] ) ; } break ; } # endif default : break ; } } ret = rock_continue ( & rs ) ; if ( ret == 0 ) goto repeat ; if ( ret == 1 ) ret = 0 ; out : kfree ( rs . buffer ) ; return ret ; eio : ret = - EIO ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 'R' ) : if ( rr -> u . ER . len_id + offsetof ( struct rock_ridge , u . ER . data ) > rr -> len ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int pppoe_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t total_len , int flags ) { struct sock * sk = sock -> sk ; struct sk_buff * skb ; int error = 0 ; if ( sk -> sk_state & PPPOX_BOUND ) { error = - EIO ; goto end ; } skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & error ) ; if ( error < 0 ) goto end ; <S2SV_StartBug> m -> msg_namelen = 0 ; <S2SV_EndBug> if ( skb ) { total_len = min_t ( size_t , total_len , skb -> len ) ; error = skb_copy_datagram_iovec ( skb , 0 , m -> msg_iov , total_len ) ; if ( error == 0 ) { consume_skb ( skb ) ; return total_len ; } } kfree_skb ( skb ) ; end : return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto end ; <S2SV_ModEnd> if ( skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15923\n\n```\nCWE-476 static void pcd_init_units ( void ) { struct pcd_unit * cd ; int unit ; pcd_drive_count = 0 ; for ( unit = 0 , cd = pcd ; unit < PCD_UNITS ; unit ++ , cd ++ ) { struct gendisk * disk = alloc_disk ( 1 ) ; if ( ! disk ) continue ; disk -> queue = blk_mq_init_sq_queue ( & cd -> tag_set , & pcd_mq_ops , 1 , BLK_MQ_F_SHOULD_MERGE ) ; if ( IS_ERR ( disk -> queue ) ) { <S2SV_StartBug> disk -> queue = NULL ; <S2SV_EndBug> continue ; } INIT_LIST_HEAD ( & cd -> rq_list ) ; disk -> queue -> queuedata = cd ; blk_queue_bounce_limit ( disk -> queue , BLK_BOUNCE_HIGH ) ; cd -> disk = disk ; cd -> pi = & cd -> pia ; cd -> present = 0 ; cd -> last_sense = 0 ; cd -> changed = 1 ; cd -> drive = ( * drives [ unit ] ) [ D_SLV ] ; if ( ( * drives [ unit ] ) [ D_PRT ] ) pcd_drive_count ++ ; cd -> name = & cd -> info . name [ 0 ] ; snprintf ( cd -> name , sizeof ( cd -> info . name ) , \"%s%d\" , name , unit ) ; cd -> info . ops = & pcd_dops ; cd -> info . handle = cd ; cd -> info . speed = 0 ; cd -> info . capacity = 1 ; cd -> info . mask = 0 ; disk -> major = major ; disk -> first_minor = unit ; strcpy ( disk -> disk_name , cd -> name ) ; disk -> fops = & pcd_bdops ; disk -> flags = GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { put_disk ( disk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11219\n\n```\nCWE-190 <S2SV_StartBug> static int getnum ( lua_State * L , const char * * fmt , int df ) { <S2SV_EndBug> if ( ! isdigit ( * * fmt ) ) return df ; else { int a = 0 ; do { <S2SV_StartBug> if ( a > ( INT_MAX / 10 ) || a * 10 > ( INT_MAX - ( * * fmt - '0' ) ) ) <S2SV_EndBug> luaL_error ( L , \"integral<S2SV_blank>size<S2SV_blank>overflow\" ) ; a = a * 10 + * ( ( * fmt ) ++ ) - '0' ; } while ( isdigit ( * * fmt ) ) ; return a ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int getnum ( <S2SV_ModEnd> const char * <S2SV_ModStart> ; do { <S2SV_ModEnd> a = a\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_choose_segmap_coding_method ( VP9_COMP * cpi ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; struct segmentation * seg = & cm -> seg ; int no_pred_cost ; int t_pred_cost = INT_MAX ; int i , tile_col , mi_row , mi_col ; int temporal_predictor_count [ PREDICTION_PROBS ] [ 2 ] = { { 0 } } ; int no_pred_segcounts [ MAX_SEGMENTS ] = { 0 } ; int t_unpred_seg_counts [ MAX_SEGMENTS ] = { 0 } ; <S2SV_StartBug> vp9_prob no_pred_tree [ SEG_TREE_PROBS ] ; <S2SV_EndBug> <S2SV_StartBug> vp9_prob t_pred_tree [ SEG_TREE_PROBS ] ; <S2SV_EndBug> <S2SV_StartBug> vp9_prob t_nopred_prob [ PREDICTION_PROBS ] ; <S2SV_EndBug> <S2SV_StartBug> const int mis = cm -> mi_stride ; <S2SV_EndBug> MODE_INFO * * mi_ptr , * * mi ; vpx_memset ( seg -> tree_probs , 255 , sizeof ( seg -> tree_probs ) ) ; <S2SV_StartBug> vpx_memset ( seg -> pred_probs , 255 , sizeof ( seg -> pred_probs ) ) ; <S2SV_EndBug> for ( tile_col = 0 ; tile_col < 1 << cm -> log2_tile_cols ; tile_col ++ ) { TileInfo tile ; <S2SV_StartBug> vp9_tile_init ( & tile , cm , 0 , tile_col ) ; <S2SV_EndBug> mi_ptr = cm -> mi_grid_visible + tile . mi_col_start ; for ( mi_row = 0 ; mi_row < cm -> mi_rows ; <S2SV_StartBug> mi_row += 8 , mi_ptr += 8 * mis ) { <S2SV_EndBug> mi = mi_ptr ; for ( mi_col = tile . mi_col_start ; mi_col < tile . mi_col_end ; mi_col += 8 , mi += 8 ) <S2SV_StartBug> count_segs_sb ( cpi , & tile , mi , no_pred_segcounts , <S2SV_EndBug> temporal_predictor_count , t_unpred_seg_counts , mi_row , mi_col , BLOCK_64X64 ) ; } } calc_segtree_probs ( no_pred_segcounts , no_pred_tree ) ; no_pred_cost = cost_segmap ( no_pred_segcounts , no_pred_tree ) ; if ( ! frame_is_intra_only ( cm ) ) { calc_segtree_probs ( t_unpred_seg_counts , t_pred_tree ) ; t_pred_cost = cost_segmap ( t_unpred_seg_counts , t_pred_tree ) ; for ( i = 0 ; i < PREDICTION_PROBS ; i ++ ) { const int count0 = temporal_predictor_count [ i ] [ 0 ] ; const int count1 = temporal_predictor_count [ i ] [ 1 ] ; t_nopred_prob [ i ] = get_binary_prob ( count0 , count1 ) ; t_pred_cost += count0 * vp9_cost_zero ( t_nopred_prob [ i ] ) + count1 * vp9_cost_one ( t_nopred_prob [ i ] ) ; } } if ( t_pred_cost < no_pred_cost ) { seg -> temporal_update = 1 ; <S2SV_StartBug> vpx_memcpy ( seg -> tree_probs , t_pred_tree , sizeof ( t_pred_tree ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( seg -> pred_probs , t_nopred_prob , sizeof ( t_nopred_prob ) ) ; <S2SV_EndBug> } else { seg -> temporal_update = 0 ; <S2SV_StartBug> vpx_memcpy ( seg -> tree_probs , no_pred_tree , sizeof ( no_pred_tree ) ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_choose_segmap_coding_method ( VP9_COMMON * cm , MACROBLOCKD * xd ) { <S2SV_ModEnd> struct segmentation * <S2SV_ModStart> 0 } ; vpx_prob <S2SV_ModEnd> no_pred_tree [ SEG_TREE_PROBS <S2SV_ModStart> SEG_TREE_PROBS ] ; vpx_prob <S2SV_ModEnd> t_pred_tree [ SEG_TREE_PROBS <S2SV_ModStart> SEG_TREE_PROBS ] ; vpx_prob <S2SV_ModEnd> t_nopred_prob [ PREDICTION_PROBS <S2SV_ModStart> PREDICTION_PROBS ] ; memset <S2SV_ModEnd> ( seg -> <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( seg -> <S2SV_ModStart> TileInfo tile ; MODE_INFO * * mi_ptr ; <S2SV_ModStart> += 8 * cm -> mi_stride ) { MODE_INFO * * <S2SV_ModEnd> mi = mi_ptr <S2SV_ModStart> ) count_segs_sb ( cm , xd <S2SV_ModEnd> , & tile <S2SV_ModStart> = 1 ; memcpy <S2SV_ModEnd> ( seg -> <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( seg -> <S2SV_ModStart> = 0 ; memcpy <S2SV_ModEnd> ( seg ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4978\n\n```\nCWE-59 void rs_filter_graph ( RSFilter * filter ) { <S2SV_StartBug> g_return_if_fail ( RS_IS_FILTER ( filter ) ) ; <S2SV_EndBug> GString * str = g_string_new ( \"digraph<S2SV_blank>G<S2SV_blank>{\\\\n\" ) ; rs_filter_graph_helper ( str , filter ) ; g_string_append_printf ( str , \"}\\\\n\" ) ; <S2SV_StartBug> g_file_set_contents ( \"/tmp/rs-filter-graph\" , str -> str , str -> len , NULL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( 0 != system ( \"dot<S2SV_blank>-Tpng<S2SV_blank>>/tmp/rs-filter-graph.png<S2SV_blank></tmp/rs-filter-graph\" ) ) <S2SV_EndBug> g_warning ( \"Calling<S2SV_blank>dot<S2SV_blank>failed\" ) ; <S2SV_StartBug> if ( 0 != system ( \"gnome-open<S2SV_blank>/tmp/rs-filter-graph.png\" ) ) <S2SV_EndBug> <S2SV_StartBug> g_warning ( \"Calling<S2SV_blank>gnome-open<S2SV_blank>failed.\" ) ; <S2SV_EndBug> g_string_free ( str , TRUE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filter ) ) ; gchar * dot_filename ; gchar * png_filename ; gchar * command_line <S2SV_ModStart> \"}\\\\n\" ) ; dot_filename = g_strdup_printf ( \"/tmp/rs-filter-graph.%u\" , g_random_int ( ) ) ; png_filename = g_strdup_printf ( \"%s.%u.png\" , dot_filename , g_random_int ( ) ) ; g_file_set_contents ( dot_filename <S2SV_ModEnd> , str -> <S2SV_ModStart> NULL ) ; command_line = g_strdup_printf ( \"dot<S2SV_blank>-Tpng<S2SV_blank>>%s<S2SV_blank><%s\" , png_filename , dot_filename ) ; <S2SV_ModStart> != system ( command_line <S2SV_ModEnd> ) ) g_warning <S2SV_ModStart> \"Calling<S2SV_blank>dot<S2SV_blank>failed\" ) ; g_free ( command_line ) ; command_line = g_strdup_printf ( \"gnome-open<S2SV_blank>%s\" , png_filename ) ; <S2SV_ModStart> != system ( command_line <S2SV_ModEnd> ) ) g_warning <S2SV_ModStart> g_warning ( \"Calling<S2SV_blank>gnome-open<S2SV_blank>failed.\" ) ; g_free ( command_line ) ; g_free ( dot_filename ) ; g_free ( png_filename\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int btpan_tap_open ( ) { struct ifreq ifr ; int fd , err ; const char * clonedev = \"/dev/tun\" ; <S2SV_StartBug> if ( ( fd = open ( clonedev , O_RDWR ) ) < 0 ) <S2SV_EndBug> { BTIF_TRACE_DEBUG ( \"could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>%s,<S2SV_blank>err:%d\" , clonedev , errno ) ; return fd ; } memset ( & ifr , 0 , sizeof ( ifr ) ) ; ifr . ifr_flags = IFF_TAP | IFF_NO_PI ; strncpy ( ifr . ifr_name , TAP_IF_NAME , IFNAMSIZ ) ; <S2SV_StartBug> if ( ( err = ioctl ( fd , TUNSETIFF , ( void * ) & ifr ) ) < 0 ) <S2SV_EndBug> { BTIF_TRACE_DEBUG ( \"ioctl<S2SV_blank>error:%d,<S2SV_blank>errno:%s\" , err , strerror ( errno ) ) ; close ( fd ) ; return err ; } if ( tap_if_up ( TAP_IF_NAME , controller_get_interface ( ) -> get_address ( ) ) == 0 ) { <S2SV_StartBug> int flags = fcntl ( fd , F_GETFL , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> fcntl ( fd , F_SETFL , flags | O_NONBLOCK ) ; <S2SV_EndBug> return fd ; } BTIF_TRACE_ERROR ( \"can<S2SV_blank>not<S2SV_blank>bring<S2SV_blank>up<S2SV_blank>tap<S2SV_blank>interface:%s\" , TAP_IF_NAME ) ; close ( fd ) ; return INVALID_FD ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( fd = TEMP_FAILURE_RETRY ( <S2SV_ModStart> clonedev , O_RDWR ) <S2SV_ModStart> ( err = TEMP_FAILURE_RETRY ( <S2SV_ModStart> ifr ) ) ) <S2SV_ModStart> int flags = TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) ) ; TEMP_FAILURE_RETRY ( <S2SV_ModEnd> fcntl ( fd <S2SV_ModStart> | O_NONBLOCK ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int get_refresh_mask ( VP9_COMP * cpi ) { <S2SV_StartBug> # if CONFIG_MULTIPLE_ARF <S2SV_EndBug> if ( ! cpi -> multi_arf_enabled && cpi -> refresh_golden_frame && ! cpi -> refresh_alt_ref_frame ) { # else if ( cpi -> refresh_golden_frame && ! cpi -> refresh_alt_ref_frame && ! cpi -> use_svc ) { # endif return ( cpi -> refresh_last_frame << cpi -> lst_fb_idx ) | ( cpi -> refresh_golden_frame << cpi -> alt_fb_idx ) ; } else { int arf_idx = cpi -> alt_fb_idx ; <S2SV_StartBug> # if CONFIG_MULTIPLE_ARF <S2SV_EndBug> <S2SV_StartBug> if ( cpi -> multi_arf_enabled ) { <S2SV_EndBug> int sn = cpi -> sequence_number ; <S2SV_StartBug> arf_idx = ( cpi -> frame_coding_order [ sn ] < 0 ) ? <S2SV_EndBug> cpi -> arf_buffer_idx [ sn + 1 ] : cpi -> arf_buffer_idx [ sn ] ; } <S2SV_StartBug> # endif <S2SV_EndBug> return ( cpi -> refresh_last_frame << cpi -> lst_fb_idx ) | ( cpi -> refresh_golden_frame << cpi -> gld_fb_idx ) | ( cpi -> refresh_alt_ref_frame << arf_idx ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi ) { if ( vp9_preserve_existing_gf ( cpi ) ) { <S2SV_ModEnd> return ( cpi <S2SV_ModStart> -> alt_fb_idx ; if ( <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> ( cpi -> oxcf . pass == 2 ) && cpi -> multi_arf_allowed ) { const GF_GROUP * const gf_group = & cpi -> twopass . gf_group <S2SV_ModEnd> ; arf_idx = <S2SV_ModStart> ; arf_idx = gf_group -> arf_update_idx [ gf_group -> index <S2SV_ModEnd> ] ; } <S2SV_ModStart> ] ; } <S2SV_ModEnd> return ( cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 static void test_show_object ( struct object * object , <S2SV_StartBug> struct strbuf * path , <S2SV_EndBug> <S2SV_StartBug> const char * last , void * data ) <S2SV_EndBug> { struct bitmap_test_data * tdata = data ; int bitmap_pos ; bitmap_pos = bitmap_position ( object -> oid . hash ) ; if ( bitmap_pos < 0 ) die ( \"Object<S2SV_blank>not<S2SV_blank>in<S2SV_blank>bitmap:<S2SV_blank>%s\\\\n\" , oid_to_hex ( & object -> oid ) ) ; bitmap_set ( tdata -> base , bitmap_pos ) ; display_progress ( tdata -> prg , ++ tdata -> seen ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * object , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8133\n\n```\nCWE-264 int do_set_thread_area ( struct task_struct * p , int idx , struct user_desc __user * u_info , int can_allocate ) { struct user_desc info ; if ( copy_from_user ( & info , u_info , sizeof ( info ) ) ) <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> if ( idx == - 1 ) idx = info . entry_number ; if ( idx == - 1 && can_allocate ) { idx = get_free_idx ( ) ; if ( idx < 0 ) return idx ; if ( put_user ( idx , & u_info -> entry_number ) ) return - EFAULT ; } if ( idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX ) return - EINVAL ; set_tls_desc ( p , idx , & info , 1 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - EFAULT ; if ( ! tls_desc_okay ( & info ) ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7613\n\n```\nCWE-362 static int newseg ( struct ipc_namespace * ns , struct ipc_params * params ) { key_t key = params -> key ; int shmflg = params -> flg ; size_t size = params -> u . size ; int error ; struct shmid_kernel * shp ; size_t numpages = ( size + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; struct file * file ; char name [ 13 ] ; int id ; vm_flags_t acctflag = 0 ; if ( size < SHMMIN || size > ns -> shm_ctlmax ) return - EINVAL ; if ( numpages << PAGE_SHIFT < size ) return - ENOSPC ; if ( ns -> shm_tot + numpages < ns -> shm_tot || ns -> shm_tot + numpages > ns -> shm_ctlall ) return - ENOSPC ; shp = ipc_rcu_alloc ( sizeof ( * shp ) ) ; if ( ! shp ) return - ENOMEM ; shp -> shm_perm . key = key ; shp -> shm_perm . mode = ( shmflg & S_IRWXUGO ) ; shp -> mlock_user = NULL ; shp -> shm_perm . security = NULL ; error = security_shm_alloc ( shp ) ; if ( error ) { ipc_rcu_putref ( shp , ipc_rcu_free ) ; return error ; } sprintf ( name , \"SYSV%08x\" , key ) ; if ( shmflg & SHM_HUGETLB ) { struct hstate * hs ; size_t hugesize ; hs = hstate_sizelog ( ( shmflg >> SHM_HUGE_SHIFT ) & SHM_HUGE_MASK ) ; if ( ! hs ) { error = - EINVAL ; goto no_file ; } hugesize = ALIGN ( size , huge_page_size ( hs ) ) ; if ( shmflg & SHM_NORESERVE ) acctflag = VM_NORESERVE ; file = hugetlb_file_setup ( name , hugesize , acctflag , & shp -> mlock_user , HUGETLB_SHMFS_INODE , ( shmflg >> SHM_HUGE_SHIFT ) & SHM_HUGE_MASK ) ; } else { if ( ( shmflg & SHM_NORESERVE ) && sysctl_overcommit_memory != OVERCOMMIT_NEVER ) acctflag = VM_NORESERVE ; file = shmem_kernel_file_setup ( name , size , acctflag ) ; } error = PTR_ERR ( file ) ; if ( IS_ERR ( file ) ) goto no_file ; <S2SV_StartBug> id = ipc_addid ( & shm_ids ( ns ) , & shp -> shm_perm , ns -> shm_ctlmni ) ; <S2SV_EndBug> if ( id < 0 ) { error = id ; goto no_id ; } <S2SV_StartBug> shp -> shm_cprid = task_tgid_vnr ( current ) ; <S2SV_EndBug> shp -> shm_lprid = 0 ; shp -> shm_atim = shp -> shm_dtim = 0 ; shp -> shm_ctim = get_seconds ( ) ; shp -> shm_segsz = size ; shp -> shm_nattch = 0 ; shp -> shm_file = file ; shp -> shm_creator = current ; list_add ( & shp -> shm_clist , & current -> sysvshm . shm_clist ) ; file_inode ( file ) -> i_ino = shp -> shm_perm . id ; ns -> shm_tot += numpages ; error = shp -> shm_perm . id ; ipc_unlock_object ( & shp -> shm_perm ) ; rcu_read_unlock ( ) ; return error ; no_id : if ( is_file_hugepages ( file ) && shp -> mlock_user ) user_shm_unlock ( size , shp -> mlock_user ) ; fput ( file ) ; no_file : ipc_rcu_putref ( shp , shm_rcu_free ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto no_file ; shp -> shm_cprid = task_tgid_vnr ( current ) ; shp -> shm_lprid = 0 ; shp -> shm_atim = shp -> shm_dtim = 0 ; shp -> shm_ctim = get_seconds ( ) ; shp -> shm_segsz = size ; shp -> shm_nattch = 0 ; shp -> shm_file = file ; shp -> shm_creator = current ; <S2SV_ModStart> no_id ; } <S2SV_ModEnd> list_add ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static struct rtable * icmp_route_lookup ( struct net * net , struct sk_buff * skb_in , const struct iphdr * iph , __be32 saddr , u8 tos , int type , int code , struct icmp_bxm * param ) { struct flowi4 fl4 = { <S2SV_StartBug> . daddr = ( param -> replyopts . srr ? <S2SV_EndBug> <S2SV_StartBug> param -> replyopts . faddr : iph -> saddr ) , <S2SV_EndBug> . saddr = saddr , . flowi4_tos = RT_TOS ( tos ) , . flowi4_proto = IPPROTO_ICMP , . fl4_icmp_type = type , . fl4_icmp_code = code , } ; struct rtable * rt , * rt2 ; int err ; security_skb_classify_flow ( skb_in , flowi4_to_flowi ( & fl4 ) ) ; rt = __ip_route_output_key ( net , & fl4 ) ; if ( IS_ERR ( rt ) ) return rt ; rt2 = rt ; if ( ! fl4 . saddr ) fl4 . saddr = rt -> rt_src ; rt = ( struct rtable * ) xfrm_lookup ( net , & rt -> dst , flowi4_to_flowi ( & fl4 ) , NULL , 0 ) ; if ( ! IS_ERR ( rt ) ) { if ( rt != rt2 ) return rt ; } else if ( PTR_ERR ( rt ) == - EPERM ) { rt = NULL ; } else return rt ; err = xfrm_decode_session_reverse ( skb_in , flowi4_to_flowi ( & fl4 ) , AF_INET ) ; if ( err ) goto relookup_failed ; if ( inet_addr_type ( net , fl4 . saddr ) == RTN_LOCAL ) { rt2 = __ip_route_output_key ( net , & fl4 ) ; if ( IS_ERR ( rt2 ) ) err = PTR_ERR ( rt2 ) ; } else { struct flowi4 fl4_2 = { } ; unsigned long orefdst ; fl4_2 . daddr = fl4 . saddr ; rt2 = ip_route_output_key ( net , & fl4_2 ) ; if ( IS_ERR ( rt2 ) ) { err = PTR_ERR ( rt2 ) ; goto relookup_failed ; } orefdst = skb_in -> _skb_refdst ; err = ip_route_input ( skb_in , fl4 . daddr , fl4 . saddr , RT_TOS ( tos ) , rt2 -> dst . dev ) ; dst_release ( & rt2 -> dst ) ; rt2 = skb_rtable ( skb_in ) ; skb_in -> _skb_refdst = orefdst ; } if ( err ) goto relookup_failed ; rt2 = ( struct rtable * ) xfrm_lookup ( net , & rt2 -> dst , flowi4_to_flowi ( & fl4 ) , NULL , XFRM_LOOKUP_ICMP ) ; if ( ! IS_ERR ( rt2 ) ) { dst_release ( & rt -> dst ) ; rt = rt2 ; } else if ( PTR_ERR ( rt2 ) == - EPERM ) { if ( rt ) dst_release ( & rt -> dst ) ; return rt2 ; } else { err = PTR_ERR ( rt2 ) ; goto relookup_failed ; } return rt ; relookup_failed : if ( rt ) return rt ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> replyopts . opt . opt . <S2SV_ModStart> param -> replyopts . opt . opt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4530\n\n```\nCWE-200 static int load_script ( struct linux_binprm * bprm ) { const char * i_arg , * i_name ; char * cp ; struct file * file ; char interp [ BINPRM_BUF_SIZE ] ; int retval ; if ( ( bprm -> buf [ 0 ] != '#' ) || ( bprm -> buf [ 1 ] != '!' ) ) return - ENOEXEC ; allow_write_access ( bprm -> file ) ; fput ( bprm -> file ) ; bprm -> file = NULL ; bprm -> buf [ BINPRM_BUF_SIZE - 1 ] = '\\\\0' ; if ( ( cp = strchr ( bprm -> buf , '\\\\n' ) ) == NULL ) cp = bprm -> buf + BINPRM_BUF_SIZE - 1 ; * cp = '\\\\0' ; while ( cp > bprm -> buf ) { cp -- ; if ( ( * cp == '<S2SV_blank>' ) || ( * cp == '\\\\t' ) ) * cp = '\\\\0' ; else break ; } for ( cp = bprm -> buf + 2 ; ( * cp == '<S2SV_blank>' ) || ( * cp == '\\\\t' ) ; cp ++ ) ; if ( * cp == '\\\\0' ) return - ENOEXEC ; i_name = cp ; i_arg = NULL ; for ( ; * cp && ( * cp != '<S2SV_blank>' ) && ( * cp != '\\\\t' ) ; cp ++ ) ; while ( ( * cp == '<S2SV_blank>' ) || ( * cp == '\\\\t' ) ) * cp ++ = '\\\\0' ; if ( * cp ) i_arg = cp ; strcpy ( interp , i_name ) ; retval = remove_arg_zero ( bprm ) ; if ( retval ) return retval ; retval = copy_strings_kernel ( 1 , & bprm -> interp , bprm ) ; if ( retval < 0 ) return retval ; bprm -> argc ++ ; if ( i_arg ) { retval = copy_strings_kernel ( 1 , & i_arg , bprm ) ; if ( retval < 0 ) return retval ; bprm -> argc ++ ; } retval = copy_strings_kernel ( 1 , & i_name , bprm ) ; if ( retval ) return retval ; bprm -> argc ++ ; <S2SV_StartBug> bprm -> interp = interp ; <S2SV_EndBug> file = open_exec ( interp ) ; if ( IS_ERR ( file ) ) return PTR_ERR ( file ) ; bprm -> file = file ; retval = prepare_binprm ( bprm ) ; if ( retval < 0 ) return retval ; <S2SV_StartBug> return search_binary_handler ( bprm ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> argc ++ ; retval = bprm_change_interp ( interp , <S2SV_ModEnd> bprm ) ; <S2SV_ModStart> return retval ; file = open_exec ( interp ) ; if ( IS_ERR ( file ) ) return PTR_ERR ( file ) ; bprm -> file = file ; retval = prepare_binprm ( bprm ) ; if ( retval < 0 ) return retval ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-5204\n\n```\nCWE-120 static void handle_PORT ( ctrl_t * ctrl , char * str ) { int a , b , c , d , e , f ; char addr [ INET_ADDRSTRLEN ] ; struct sockaddr_in sin ; if ( ctrl -> data_sd > 0 ) { uev_io_stop ( & ctrl -> data_watcher ) ; close ( ctrl -> data_sd ) ; ctrl -> data_sd = - 1 ; } sscanf ( str , \"%d,%d,%d,%d,%d,%d\" , & a , & b , & c , & d , & e , & f ) ; <S2SV_StartBug> sprintf ( addr , \"%d.%d.%d.%d\" , a , b , c , d ) ; <S2SV_EndBug> if ( ! inet_aton ( addr , & ( sin . sin_addr ) ) ) { ERR ( 0 , \"Invalid<S2SV_blank>address<S2SV_blank>\\'%s\\'<S2SV_blank>given<S2SV_blank>to<S2SV_blank>PORT<S2SV_blank>command\" , addr ) ; send_msg ( ctrl -> sd , \"500<S2SV_blank>Illegal<S2SV_blank>PORT<S2SV_blank>command.\\\\r\\\\n\" ) ; return ; } strlcpy ( ctrl -> data_address , addr , sizeof ( ctrl -> data_address ) ) ; ctrl -> data_port = e * 256 + f ; DBG ( \"Client<S2SV_blank>PORT<S2SV_blank>command<S2SV_blank>accepted<S2SV_blank>for<S2SV_blank>%s:%d\" , ctrl -> data_address , ctrl -> data_port ) ; send_msg ( ctrl -> sd , \"200<S2SV_blank>PORT<S2SV_blank>command<S2SV_blank>successful.\\\\r\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> f ) ; snprintf ( addr , sizeof ( addr ) <S2SV_ModEnd> , \"%d.%d.%d.%d\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> int ntlm_read_message_header ( wStream * s , NTLM_MESSAGE_HEADER * header ) <S2SV_EndBug> { if ( Stream_GetRemainingLength ( s ) < 12 ) return - 1 ; Stream_Read ( s , header -> Signature , 8 ) ; Stream_Read_UINT32 ( s , header -> MessageType ) ; if ( strncmp ( ( char * ) header -> Signature , NTLM_SIGNATURE , 8 ) != 0 ) return - 1 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19947\n\n```\nCWE-908 static int kvaser_usb_leaf_set_opt_mode ( const struct kvaser_usb_net_priv * priv ) { struct kvaser_cmd * cmd ; int rc ; <S2SV_StartBug> cmd = kmalloc ( sizeof ( * cmd ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! cmd ) return - ENOMEM ; cmd -> id = CMD_SET_CTRL_MODE ; cmd -> len = CMD_HEADER_LEN + sizeof ( struct kvaser_cmd_ctrl_mode ) ; cmd -> u . ctrl_mode . tid = 0xff ; cmd -> u . ctrl_mode . channel = priv -> channel ; if ( priv -> can . ctrlmode & CAN_CTRLMODE_LISTENONLY ) cmd -> u . ctrl_mode . ctrl_mode = KVASER_CTRL_MODE_SILENT ; else cmd -> u . ctrl_mode . ctrl_mode = KVASER_CTRL_MODE_NORMAL ; rc = kvaser_usb_send_cmd ( priv -> dev , cmd , cmd -> len ) ; kfree ( cmd ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; cmd = kzalloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0250\n\n```\nCWE-000 static int init_nss_hash ( struct crypto_instance * instance ) { PK11SlotInfo * hash_slot = NULL ; SECItem hash_param ; if ( ! hash_to_nss [ instance -> crypto_hash_type ] ) { return 0 ; } hash_param . type = siBuffer ; <S2SV_StartBug> hash_param . data = 0 ; <S2SV_EndBug> <S2SV_StartBug> hash_param . len = 0 ; <S2SV_EndBug> hash_slot = PK11_GetBestSlot ( hash_to_nss [ instance -> crypto_hash_type ] , NULL ) ; if ( hash_slot == NULL ) { log_printf ( instance -> log_level_security , \"Unable<S2SV_blank>to<S2SV_blank>find<S2SV_blank>security<S2SV_blank>slot<S2SV_blank>(err<S2SV_blank>%d)\" , PR_GetError ( ) ) ; return - 1 ; } instance -> nss_sym_key_sign = PK11_ImportSymKey ( hash_slot , hash_to_nss [ instance -> crypto_hash_type ] , PK11_OriginUnwrap , CKA_SIGN , & hash_param , NULL ) ; if ( instance -> nss_sym_key_sign == NULL ) { log_printf ( instance -> log_level_security , \"Failure<S2SV_blank>to<S2SV_blank>import<S2SV_blank>key<S2SV_blank>into<S2SV_blank>NSS<S2SV_blank>(err<S2SV_blank>%d)\" , PR_GetError ( ) ) ; return - 1 ; } PK11_FreeSlot ( hash_slot ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . data = instance -> private_key <S2SV_ModEnd> ; hash_param . <S2SV_ModStart> . len = instance -> private_key_len <S2SV_ModEnd> ; hash_slot =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7446\n\n```\nCWE-000 static struct sock * unix_create1 ( struct net * net , struct socket * sock , int kern ) { struct sock * sk = NULL ; struct unix_sock * u ; atomic_long_inc ( & unix_nr_socks ) ; if ( atomic_long_read ( & unix_nr_socks ) > 2 * get_max_files ( ) ) goto out ; sk = sk_alloc ( net , PF_UNIX , GFP_KERNEL , & unix_proto , kern ) ; if ( ! sk ) goto out ; sock_init_data ( sock , sk ) ; lockdep_set_class ( & sk -> sk_receive_queue . lock , & af_unix_sk_receive_queue_lock_key ) ; sk -> sk_write_space = unix_write_space ; sk -> sk_max_ack_backlog = net -> unx . sysctl_max_dgram_qlen ; sk -> sk_destruct = unix_sock_destructor ; u = unix_sk ( sk ) ; u -> path . dentry = NULL ; u -> path . mnt = NULL ; spin_lock_init ( & u -> lock ) ; atomic_long_set ( & u -> inflight , 0 ) ; INIT_LIST_HEAD ( & u -> link ) ; mutex_init ( & u -> readlock ) ; init_waitqueue_head ( & u -> peer_wait ) ; <S2SV_StartBug> unix_insert_socket ( unix_sockets_unbound ( sk ) , sk ) ; <S2SV_EndBug> out : if ( sk == NULL ) atomic_long_dec ( & unix_nr_socks ) ; else { local_bh_disable ( ) ; sock_prot_inuse_add ( sock_net ( sk ) , sk -> sk_prot , 1 ) ; local_bh_enable ( ) ; } return sk ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> peer_wait ) ; init_waitqueue_func_entry ( & u -> peer_wake , unix_dgram_peer_wake_relay ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3980\n\n```\nCWE-264 FepClient * fep_client_open ( const char * address ) { FepClient * client ; struct sockaddr_un sun ; ssize_t sun_len ; int retval ; if ( ! address ) address = getenv ( \"LIBFEP_CONTROL_SOCK\" ) ; if ( ! address ) return NULL ; if ( strlen ( address ) + 1 >= sizeof ( sun . sun_path ) ) { fep_log ( FEP_LOG_LEVEL_WARNING , \"unix<S2SV_blank>domain<S2SV_blank>socket<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long:<S2SV_blank>%d<S2SV_blank>+<S2SV_blank>1<S2SV_blank>>=<S2SV_blank>%d\" , strlen ( address ) , sizeof ( sun . sun_path ) ) ; free ( address ) ; return NULL ; } client = xzalloc ( sizeof ( FepClient ) ) ; client -> filter_running = false ; client -> messages = NULL ; memset ( & sun , 0 , sizeof ( struct sockaddr_un ) ) ; sun . sun_family = AF_UNIX ; <S2SV_StartBug> # ifdef __linux__ <S2SV_EndBug> <S2SV_StartBug> sun . sun_path [ 0 ] = '\\\\0' ; <S2SV_EndBug> memcpy ( sun . sun_path + 1 , address , strlen ( address ) ) ; <S2SV_StartBug> sun_len = offsetof ( struct sockaddr_un , sun_path ) + strlen ( address ) + 1 ; <S2SV_EndBug> # else memcpy ( sun . sun_path , address , strlen ( address ) ) ; sun_len = sizeof ( struct sockaddr_un ) ; # endif client -> control = socket ( AF_UNIX , SOCK_STREAM , 0 ) ; if ( client -> control < 0 ) { free ( client ) ; return NULL ; } retval = connect ( client -> control , ( const struct sockaddr * ) & sun , sun_len ) ; if ( retval < 0 ) { close ( client -> control ) ; free ( client ) ; return NULL ; } return client ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = AF_UNIX ; memcpy ( <S2SV_ModEnd> sun . sun_path <S2SV_ModStart> sun . sun_path <S2SV_ModEnd> , address , <S2SV_ModStart> ; sun_len = sizeof <S2SV_ModEnd> ( struct sockaddr_un <S2SV_ModStart> ( struct sockaddr_un ) ; <S2SV_ModEnd> client -> control\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15862\n\n```\nCWE-269 int handle_nsExtendConfigTable ( netsnmp_mib_handler * handler , netsnmp_handler_registration * reginfo , netsnmp_agent_request_info * reqinfo , netsnmp_request_info * requests ) { netsnmp_request_info * request ; netsnmp_table_request_info * table_info ; netsnmp_extend * extension ; extend_registration_block * eptr ; int i ; int need_to_validate = 0 ; for ( request = requests ; request ; request = request -> next ) { if ( request -> processed ) continue ; table_info = netsnmp_extract_table_info ( request ) ; extension = ( netsnmp_extend * ) netsnmp_extract_table_row_data ( request ) ; DEBUGMSGTL ( ( \"nsExtendTable:config\" , \"varbind:<S2SV_blank>\" ) ) ; DEBUGMSGOID ( ( \"nsExtendTable:config\" , request -> requestvb -> name , request -> requestvb -> name_length ) ) ; DEBUGMSG ( ( \"nsExtendTable:config\" , \"<S2SV_blank>(%s)\\\\n\" , se_find_label_in_slist ( \"agent_mode\" , reqinfo -> mode ) ) ) ; switch ( reqinfo -> mode ) { case MODE_GET : switch ( table_info -> colnum ) { case COLUMN_EXTCFG_COMMAND : snmp_set_var_typed_value ( request -> requestvb , ASN_OCTET_STR , extension -> command , ( extension -> command ) ? strlen ( extension -> command ) : 0 ) ; break ; case COLUMN_EXTCFG_ARGS : snmp_set_var_typed_value ( request -> requestvb , ASN_OCTET_STR , extension -> args , ( extension -> args ) ? strlen ( extension -> args ) : 0 ) ; break ; case COLUMN_EXTCFG_INPUT : snmp_set_var_typed_value ( request -> requestvb , ASN_OCTET_STR , extension -> input , ( extension -> input ) ? strlen ( extension -> input ) : 0 ) ; break ; case COLUMN_EXTCFG_CACHETIME : snmp_set_var_typed_value ( request -> requestvb , ASN_INTEGER , ( u_char * ) & extension -> cache -> timeout , sizeof ( int ) ) ; break ; case COLUMN_EXTCFG_EXECTYPE : i = ( ( extension -> flags & NS_EXTEND_FLAGS_SHELL ) ? NS_EXTEND_ETYPE_SHELL : NS_EXTEND_ETYPE_EXEC ) ; snmp_set_var_typed_value ( request -> requestvb , ASN_INTEGER , ( u_char * ) & i , sizeof ( i ) ) ; break ; case COLUMN_EXTCFG_RUNTYPE : i = ( ( extension -> flags & NS_EXTEND_FLAGS_WRITEABLE ) ? NS_EXTEND_RTYPE_RWRITE : NS_EXTEND_RTYPE_RONLY ) ; snmp_set_var_typed_value ( request -> requestvb , ASN_INTEGER , ( u_char * ) & i , sizeof ( i ) ) ; break ; case COLUMN_EXTCFG_STORAGE : i = ( ( extension -> flags & NS_EXTEND_FLAGS_CONFIG ) ? ST_PERMANENT : ST_VOLATILE ) ; snmp_set_var_typed_value ( request -> requestvb , ASN_INTEGER , ( u_char * ) & i , sizeof ( i ) ) ; break ; case COLUMN_EXTCFG_STATUS : i = ( ( extension -> flags & NS_EXTEND_FLAGS_ACTIVE ) ? RS_ACTIVE : RS_NOTINSERVICE ) ; snmp_set_var_typed_value ( request -> requestvb , ASN_INTEGER , ( u_char * ) & i , sizeof ( i ) ) ; break ; default : netsnmp_set_request_error ( reqinfo , request , SNMP_NOSUCHOBJECT ) ; continue ; } break ; <S2SV_StartBug> # ifndef NETSNMP_NO_WRITE_SUPPORT <S2SV_EndBug> case MODE_SET_RESERVE1 : switch ( table_info -> colnum ) { case COLUMN_EXTCFG_COMMAND : if ( request -> requestvb -> type != ASN_OCTET_STR ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGTYPE ) ; return SNMP_ERR_WRONGTYPE ; } if ( request -> requestvb -> val_len == 0 || request -> requestvb -> val . string [ 0 ] != '/' ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGVALUE ) ; return SNMP_ERR_WRONGVALUE ; } if ( extension && extension -> flags & NS_EXTEND_FLAGS_CONFIG ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_NOTWRITABLE ) ; return SNMP_ERR_NOTWRITABLE ; } break ; case COLUMN_EXTCFG_ARGS : case COLUMN_EXTCFG_INPUT : if ( request -> requestvb -> type != ASN_OCTET_STR ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGTYPE ) ; return SNMP_ERR_WRONGTYPE ; } if ( extension && extension -> flags & NS_EXTEND_FLAGS_CONFIG ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_NOTWRITABLE ) ; return SNMP_ERR_NOTWRITABLE ; } break ; case COLUMN_EXTCFG_CACHETIME : if ( request -> requestvb -> type != ASN_INTEGER ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGTYPE ) ; return SNMP_ERR_WRONGTYPE ; } i = * request -> requestvb -> val . integer ; if ( i < - 1 ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGVALUE ) ; return SNMP_ERR_WRONGVALUE ; } break ; case COLUMN_EXTCFG_EXECTYPE : if ( request -> requestvb -> type != ASN_INTEGER ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGTYPE ) ; return SNMP_ERR_WRONGTYPE ; } i = * request -> requestvb -> val . integer ; if ( i < 1 || i > 2 ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGVALUE ) ; return SNMP_ERR_WRONGVALUE ; } if ( extension && extension -> flags & NS_EXTEND_FLAGS_CONFIG ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_NOTWRITABLE ) ; return SNMP_ERR_NOTWRITABLE ; } break ; case COLUMN_EXTCFG_RUNTYPE : if ( request -> requestvb -> type != ASN_INTEGER ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGTYPE ) ; return SNMP_ERR_WRONGTYPE ; } i = * request -> requestvb -> val . integer ; if ( i < 1 || i > 3 ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGVALUE ) ; return SNMP_ERR_WRONGVALUE ; } if ( i == 3 && ! ( extension && ( extension -> flags & NS_EXTEND_FLAGS_WRITEABLE ) ) ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_INCONSISTENTVALUE ) ; return SNMP_ERR_INCONSISTENTVALUE ; } if ( ( extension && extension -> flags & NS_EXTEND_FLAGS_CONFIG ) && i != 3 ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_INCONSISTENTVALUE ) ; return SNMP_ERR_INCONSISTENTVALUE ; } break ; case COLUMN_EXTCFG_STATUS : if ( request -> requestvb -> type != ASN_INTEGER ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGTYPE ) ; return SNMP_ERR_WRONGTYPE ; } i = * request -> requestvb -> val . integer ; switch ( i ) { case RS_ACTIVE : case RS_NOTINSERVICE : if ( ! extension ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_INCONSISTENTVALUE ) ; return SNMP_ERR_INCONSISTENTVALUE ; } break ; case RS_CREATEANDGO : case RS_CREATEANDWAIT : if ( extension ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_INCONSISTENTVALUE ) ; return SNMP_ERR_INCONSISTENTVALUE ; } break ; case RS_DESTROY : break ; default : netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_WRONGVALUE ) ; return SNMP_ERR_WRONGVALUE ; } break ; default : netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_NOTWRITABLE ) ; return SNMP_ERR_NOTWRITABLE ; } break ; case MODE_SET_RESERVE2 : switch ( table_info -> colnum ) { case COLUMN_EXTCFG_STATUS : i = * request -> requestvb -> val . integer ; switch ( i ) { case RS_CREATEANDGO : case RS_CREATEANDWAIT : eptr = _find_extension_block ( request -> requestvb -> name , request -> requestvb -> name_length ) ; extension = _new_extension ( ( char * ) table_info -> indexes -> val . string , 0 , eptr ) ; if ( ! extension ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_RESOURCEUNAVAILABLE ) ; return SNMP_ERR_RESOURCEUNAVAILABLE ; } netsnmp_insert_table_row ( request , extension -> row ) ; } } break ; case MODE_SET_FREE : switch ( table_info -> colnum ) { case COLUMN_EXTCFG_STATUS : i = * request -> requestvb -> val . integer ; switch ( i ) { case RS_CREATEANDGO : case RS_CREATEANDWAIT : eptr = _find_extension_block ( request -> requestvb -> name , request -> requestvb -> name_length ) ; _free_extension ( extension , eptr ) ; } } break ; case MODE_SET_ACTION : switch ( table_info -> colnum ) { case COLUMN_EXTCFG_COMMAND : extension -> old_command = extension -> command ; extension -> command = netsnmp_strdup_and_null ( request -> requestvb -> val . string , request -> requestvb -> val_len ) ; break ; case COLUMN_EXTCFG_ARGS : extension -> old_args = extension -> args ; extension -> args = netsnmp_strdup_and_null ( request -> requestvb -> val . string , request -> requestvb -> val_len ) ; break ; case COLUMN_EXTCFG_INPUT : extension -> old_input = extension -> input ; extension -> input = netsnmp_strdup_and_null ( request -> requestvb -> val . string , request -> requestvb -> val_len ) ; break ; case COLUMN_EXTCFG_STATUS : i = * request -> requestvb -> val . integer ; switch ( i ) { case RS_ACTIVE : case RS_CREATEANDGO : need_to_validate = 1 ; } break ; } break ; case MODE_SET_UNDO : switch ( table_info -> colnum ) { case COLUMN_EXTCFG_COMMAND : if ( extension && extension -> old_command ) { SNMP_FREE ( extension -> command ) ; extension -> command = extension -> old_command ; extension -> old_command = NULL ; } break ; case COLUMN_EXTCFG_ARGS : if ( extension && extension -> old_args ) { SNMP_FREE ( extension -> args ) ; extension -> args = extension -> old_args ; extension -> old_args = NULL ; } break ; case COLUMN_EXTCFG_INPUT : if ( extension && extension -> old_input ) { SNMP_FREE ( extension -> input ) ; extension -> input = extension -> old_input ; extension -> old_input = NULL ; } break ; case COLUMN_EXTCFG_STATUS : i = * request -> requestvb -> val . integer ; switch ( i ) { case RS_CREATEANDGO : case RS_CREATEANDWAIT : eptr = _find_extension_block ( request -> requestvb -> name , request -> requestvb -> name_length ) ; _free_extension ( extension , eptr ) ; } break ; } break ; case MODE_SET_COMMIT : switch ( table_info -> colnum ) { case COLUMN_EXTCFG_CACHETIME : i = * request -> requestvb -> val . integer ; extension -> cache -> timeout = i ; break ; case COLUMN_EXTCFG_RUNTYPE : i = * request -> requestvb -> val . integer ; switch ( i ) { case 1 : extension -> flags &= ~ NS_EXTEND_FLAGS_WRITEABLE ; break ; case 2 : extension -> flags |= NS_EXTEND_FLAGS_WRITEABLE ; break ; case 3 : ( void ) netsnmp_cache_check_and_reload ( extension -> cache ) ; break ; } break ; case COLUMN_EXTCFG_EXECTYPE : i = * request -> requestvb -> val . integer ; if ( i == NS_EXTEND_ETYPE_SHELL ) extension -> flags |= NS_EXTEND_FLAGS_SHELL ; else extension -> flags &= ~ NS_EXTEND_FLAGS_SHELL ; break ; case COLUMN_EXTCFG_STATUS : i = * request -> requestvb -> val . integer ; switch ( i ) { case RS_ACTIVE : case RS_CREATEANDGO : extension -> flags |= NS_EXTEND_FLAGS_ACTIVE ; break ; case RS_NOTINSERVICE : case RS_CREATEANDWAIT : extension -> flags &= ~ NS_EXTEND_FLAGS_ACTIVE ; break ; case RS_DESTROY : eptr = _find_extension_block ( request -> requestvb -> name , request -> requestvb -> name_length ) ; _free_extension ( extension , eptr ) ; break ; } } break ; # endif default : netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_GENERR ) ; return SNMP_ERR_GENERR ; } } <S2SV_StartBug> # ifndef NETSNMP_NO_WRITE_SUPPORT <S2SV_EndBug> if ( need_to_validate ) { for ( request = requests ; request ; request = request -> next ) { if ( request -> processed ) continue ; table_info = netsnmp_extract_table_info ( request ) ; extension = ( netsnmp_extend * ) netsnmp_extract_table_row_data ( request ) ; switch ( table_info -> colnum ) { case COLUMN_EXTCFG_STATUS : i = * request -> requestvb -> val . integer ; if ( ( i == RS_ACTIVE || i == RS_CREATEANDGO ) && ! ( extension && extension -> command && extension -> command [ 0 ] == '/' ) ) { netsnmp_set_request_error ( reqinfo , request , SNMP_ERR_INCONSISTENTVALUE ) ; return SNMP_ERR_INCONSISTENTVALUE ; } } } } # endif return SNMP_ERR_NOERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; # if ! defined ( NETSNMP_NO_WRITE_SUPPORT ) && ENABLE_EXTEND_WRITE_ACCESS <S2SV_ModEnd> case MODE_SET_RESERVE1 : <S2SV_ModStart> } } # if ! defined ( NETSNMP_NO_WRITE_SUPPORT ) && ENABLE_EXTEND_WRITE_ACCESS <S2SV_ModEnd> if ( need_to_validate\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 <S2SV_StartBug> static struct ip_options * ip_options_get_alloc ( const int optlen ) <S2SV_EndBug> { <S2SV_StartBug> return kzalloc ( sizeof ( struct ip_options ) + ( ( optlen + 3 ) & ~ 3 ) , <S2SV_EndBug> GFP_KERNEL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static struct ip_options_rcu <S2SV_ModEnd> * ip_options_get_alloc ( <S2SV_ModStart> sizeof ( struct ip_options_rcu <S2SV_ModEnd> ) + (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3631\n\n```\nCWE-000 int assoc_array_gc ( struct assoc_array * array , const struct assoc_array_ops * ops , bool ( * iterator ) ( void * object , void * iterator_data ) , void * iterator_data ) { struct assoc_array_shortcut * shortcut , * new_s ; struct assoc_array_node * node , * new_n ; struct assoc_array_edit * edit ; struct assoc_array_ptr * cursor , * ptr ; struct assoc_array_ptr * new_root , * new_parent , * * new_ptr_pp ; unsigned long nr_leaves_on_tree ; int keylen , slot , nr_free , next_slot , i ; pr_devel ( \"-->%s()\\\\n\" , __func__ ) ; if ( ! array -> root ) return 0 ; edit = kzalloc ( sizeof ( struct assoc_array_edit ) , GFP_KERNEL ) ; if ( ! edit ) return - ENOMEM ; edit -> array = array ; edit -> ops = ops ; edit -> ops_for_excised_subtree = ops ; edit -> set [ 0 ] . ptr = & array -> root ; edit -> excised_subtree = array -> root ; new_root = new_parent = NULL ; new_ptr_pp = & new_root ; cursor = array -> root ; descend : if ( assoc_array_ptr_is_shortcut ( cursor ) ) { shortcut = assoc_array_ptr_to_shortcut ( cursor ) ; keylen = round_up ( shortcut -> skip_to_level , ASSOC_ARRAY_KEY_CHUNK_SIZE ) ; keylen >>= ASSOC_ARRAY_KEY_CHUNK_SHIFT ; new_s = kmalloc ( sizeof ( struct assoc_array_shortcut ) + keylen * sizeof ( unsigned long ) , GFP_KERNEL ) ; if ( ! new_s ) goto enomem ; pr_devel ( \"dup<S2SV_blank>shortcut<S2SV_blank>%p<S2SV_blank>-><S2SV_blank>%p\\\\n\" , shortcut , new_s ) ; memcpy ( new_s , shortcut , ( sizeof ( struct assoc_array_shortcut ) + keylen * sizeof ( unsigned long ) ) ) ; new_s -> back_pointer = new_parent ; new_s -> parent_slot = shortcut -> parent_slot ; * new_ptr_pp = new_parent = assoc_array_shortcut_to_ptr ( new_s ) ; new_ptr_pp = & new_s -> next_node ; cursor = shortcut -> next_node ; } node = assoc_array_ptr_to_node ( cursor ) ; new_n = kzalloc ( sizeof ( struct assoc_array_node ) , GFP_KERNEL ) ; if ( ! new_n ) goto enomem ; pr_devel ( \"dup<S2SV_blank>node<S2SV_blank>%p<S2SV_blank>-><S2SV_blank>%p\\\\n\" , node , new_n ) ; new_n -> back_pointer = new_parent ; new_n -> parent_slot = node -> parent_slot ; * new_ptr_pp = new_parent = assoc_array_node_to_ptr ( new_n ) ; new_ptr_pp = NULL ; slot = 0 ; continue_node : for ( ; slot < ASSOC_ARRAY_FAN_OUT ; slot ++ ) { ptr = node -> slots [ slot ] ; if ( ! ptr ) continue ; if ( assoc_array_ptr_is_leaf ( ptr ) ) { if ( iterator ( assoc_array_ptr_to_leaf ( ptr ) , iterator_data ) ) new_n -> slots [ slot ] = ptr ; continue ; } new_ptr_pp = & new_n -> slots [ slot ] ; cursor = ptr ; goto descend ; } pr_devel ( \"--<S2SV_blank>compress<S2SV_blank>node<S2SV_blank>%p<S2SV_blank>--\\\\n\" , new_n ) ; new_n -> nr_leaves_on_branch = 0 ; nr_free = 0 ; for ( slot = 0 ; slot < ASSOC_ARRAY_FAN_OUT ; slot ++ ) { ptr = new_n -> slots [ slot ] ; if ( ! ptr ) nr_free ++ ; else if ( assoc_array_ptr_is_leaf ( ptr ) ) new_n -> nr_leaves_on_branch ++ ; } pr_devel ( \"free=%d,<S2SV_blank>leaves=%lu\\\\n\" , nr_free , new_n -> nr_leaves_on_branch ) ; next_slot = 0 ; for ( slot = 0 ; slot < ASSOC_ARRAY_FAN_OUT ; slot ++ ) { struct assoc_array_shortcut * s ; struct assoc_array_node * child ; ptr = new_n -> slots [ slot ] ; if ( ! ptr || assoc_array_ptr_is_leaf ( ptr ) ) continue ; s = NULL ; if ( assoc_array_ptr_is_shortcut ( ptr ) ) { s = assoc_array_ptr_to_shortcut ( ptr ) ; ptr = s -> next_node ; } child = assoc_array_ptr_to_node ( ptr ) ; new_n -> nr_leaves_on_branch += child -> nr_leaves_on_branch ; if ( child -> nr_leaves_on_branch <= nr_free + 1 ) { pr_devel ( \"[%d]<S2SV_blank>fold<S2SV_blank>node<S2SV_blank>%lu/%d<S2SV_blank>[nx<S2SV_blank>%d]\\\\n\" , slot , child -> nr_leaves_on_branch , nr_free + 1 , next_slot ) ; BUG_ON ( s ) ; new_n -> slots [ slot ] = NULL ; nr_free ++ ; if ( slot < next_slot ) next_slot = slot ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { struct assoc_array_ptr * p = child -> slots [ i ] ; if ( ! p ) continue ; BUG_ON ( assoc_array_ptr_is_meta ( p ) ) ; while ( new_n -> slots [ next_slot ] ) next_slot ++ ; BUG_ON ( next_slot >= ASSOC_ARRAY_FAN_OUT ) ; new_n -> slots [ next_slot ++ ] = p ; nr_free -- ; } kfree ( child ) ; } else { pr_devel ( \"[%d]<S2SV_blank>retain<S2SV_blank>node<S2SV_blank>%lu/%d<S2SV_blank>[nx<S2SV_blank>%d]\\\\n\" , slot , child -> nr_leaves_on_branch , nr_free + 1 , next_slot ) ; } } pr_devel ( \"after:<S2SV_blank>%lu\\\\n\" , new_n -> nr_leaves_on_branch ) ; nr_leaves_on_tree = new_n -> nr_leaves_on_branch ; if ( nr_free == ASSOC_ARRAY_FAN_OUT - 1 ) { for ( slot = 0 ; slot < ASSOC_ARRAY_FAN_OUT ; slot ++ ) if ( ( ptr = new_n -> slots [ slot ] ) ) break ; if ( assoc_array_ptr_is_meta ( ptr ) && assoc_array_ptr_is_shortcut ( ptr ) ) { pr_devel ( \"excise<S2SV_blank>node<S2SV_blank>%p<S2SV_blank>with<S2SV_blank>1<S2SV_blank>shortcut\\\\n\" , new_n ) ; new_s = assoc_array_ptr_to_shortcut ( ptr ) ; new_parent = new_n -> back_pointer ; slot = new_n -> parent_slot ; kfree ( new_n ) ; if ( ! new_parent ) { new_s -> back_pointer = NULL ; new_s -> parent_slot = 0 ; new_root = ptr ; goto gc_complete ; } if ( assoc_array_ptr_is_shortcut ( new_parent ) ) { struct assoc_array_shortcut * s = assoc_array_ptr_to_shortcut ( new_parent ) ; pr_devel ( \"excise<S2SV_blank>preceding<S2SV_blank>shortcut\\\\n\" ) ; new_parent = new_s -> back_pointer = s -> back_pointer ; slot = new_s -> parent_slot = s -> parent_slot ; kfree ( s ) ; if ( ! new_parent ) { new_s -> back_pointer = NULL ; new_s -> parent_slot = 0 ; new_root = ptr ; goto gc_complete ; } } new_s -> back_pointer = new_parent ; new_s -> parent_slot = slot ; new_n = assoc_array_ptr_to_node ( new_parent ) ; new_n -> slots [ slot ] = ptr ; goto ascend_old_tree ; } } ptr = new_n -> back_pointer ; if ( ! ptr ) goto gc_complete ; if ( assoc_array_ptr_is_shortcut ( ptr ) ) { new_s = assoc_array_ptr_to_shortcut ( ptr ) ; new_parent = new_s -> back_pointer ; slot = new_s -> parent_slot ; if ( new_n -> nr_leaves_on_branch <= ASSOC_ARRAY_FAN_OUT ) { struct assoc_array_node * n ; pr_devel ( \"excise<S2SV_blank>shortcut\\\\n\" ) ; new_n -> back_pointer = new_parent ; new_n -> parent_slot = slot ; kfree ( new_s ) ; if ( ! new_parent ) { new_root = assoc_array_node_to_ptr ( new_n ) ; goto gc_complete ; } n = assoc_array_ptr_to_node ( new_parent ) ; n -> slots [ slot ] = assoc_array_node_to_ptr ( new_n ) ; } } else { new_parent = ptr ; } new_n = assoc_array_ptr_to_node ( new_parent ) ; ascend_old_tree : ptr = node -> back_pointer ; if ( assoc_array_ptr_is_shortcut ( ptr ) ) { shortcut = assoc_array_ptr_to_shortcut ( ptr ) ; slot = shortcut -> parent_slot ; cursor = shortcut -> back_pointer ; <S2SV_StartBug> } else { <S2SV_EndBug> slot = node -> parent_slot ; cursor = ptr ; } <S2SV_StartBug> BUG_ON ( ! ptr ) ; <S2SV_EndBug> node = assoc_array_ptr_to_node ( cursor ) ; slot ++ ; goto continue_node ; gc_complete : edit -> set [ 0 ] . to = new_root ; assoc_array_apply_edit ( edit ) ; array -> nr_leaves_on_tree = nr_leaves_on_tree ; return 0 ; enomem : pr_devel ( \"enomem\\\\n\" ) ; assoc_array_destroy_subtree ( new_root , edit -> ops ) ; kfree ( edit ) ; return - ENOMEM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> back_pointer ; if ( ! cursor ) goto gc_complete ; <S2SV_ModStart> BUG_ON ( ! cursor <S2SV_ModEnd> ) ; node\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5332\n\n```\nCWE-787 int rds_rdma_extra_size ( struct rds_rdma_args * args ) { struct rds_iovec vec ; struct rds_iovec __user * local_vec ; int tot_pages = 0 ; unsigned int nr_pages ; unsigned int i ; <S2SV_StartBug> local_vec = ( struct rds_iovec __user * ) ( unsigned long ) args -> local_vec_addr ; <S2SV_EndBug> for ( i = 0 ; i < args -> nr_local ; i ++ ) { if ( copy_from_user ( & vec , & local_vec [ i ] , sizeof ( struct rds_iovec ) ) ) return - EFAULT ; nr_pages = rds_pages_in_vec ( & vec ) ; if ( nr_pages == 0 ) return - EINVAL ; tot_pages += nr_pages ; if ( tot_pages < 0 ) return - EINVAL ; } return tot_pages * sizeof ( struct scatterlist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> args -> local_vec_addr ; if ( args -> nr_local == 0 ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4162\n\n```\nCWE-399 static int udp_v6_push_pending_frames ( struct sock * sk ) { struct sk_buff * skb ; struct udphdr * uh ; struct udp_sock * up = udp_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; <S2SV_StartBug> struct flowi6 * fl6 = & inet -> cork . fl . u . ip6 ; <S2SV_EndBug> <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> int is_udplite = IS_UDPLITE ( sk ) ; __wsum csum = 0 ; if ( ( skb = skb_peek ( & sk -> sk_write_queue ) ) == NULL ) goto out ; uh = udp_hdr ( skb ) ; uh -> source = fl6 -> fl6_sport ; uh -> dest = fl6 -> fl6_dport ; uh -> len = htons ( up -> len ) ; uh -> check = 0 ; if ( is_udplite ) csum = udplite_csum_outgoing ( sk , skb ) ; else if ( skb -> ip_summed == CHECKSUM_PARTIAL ) { udp6_hwcsum_outgoing ( sk , skb , & fl6 -> saddr , & fl6 -> daddr , up -> len ) ; goto send ; } else csum = udp_csum_outgoing ( sk , skb ) ; uh -> check = csum_ipv6_magic ( & fl6 -> saddr , & fl6 -> daddr , up -> len , fl6 -> flowi6_proto , csum ) ; if ( uh -> check == 0 ) uh -> check = CSUM_MANGLED_0 ; send : err = ip6_push_pending_frames ( sk ) ; if ( err ) { if ( err == - ENOBUFS && ! inet6_sk ( sk ) -> recverr ) { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_SNDBUFERRORS , is_udplite ) ; err = 0 ; } } else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_OUTDATAGRAMS , is_udplite ) ; out : up -> len = 0 ; up -> pending = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct flowi6 * fl6 ; int err = 0 ; int is_udplite = IS_UDPLITE ( sk ) ; __wsum csum = 0 ; if ( up -> pending == AF_INET ) return udp_push_pending_frames ( sk ) ; <S2SV_ModStart> . ip6 ; <S2SV_ModEnd> if ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8324\n\n```\nCWE-20 int net_get ( int s , void * arg , int * len ) { struct net_hdr nh ; int plen ; if ( net_read_exact ( s , & nh , sizeof ( nh ) ) == - 1 ) { return - 1 ; } plen = ntohl ( nh . nh_len ) ; if ( ! ( plen <= * len ) ) printf ( \"PLEN<S2SV_blank>%d<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>len<S2SV_blank>%d\\\\n\" , plen , nh . nh_type , * len ) ; <S2SV_StartBug> assert ( plen <= * len ) ; <S2SV_EndBug> * len = plen ; if ( ( * len ) && ( net_read_exact ( s , arg , * len ) == - 1 ) ) { return - 1 ; } return nh . nh_type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <= * len && plen > 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int btsock_thread_post_cmd ( int h , int type , const unsigned char * data , int size , uint32_t user_id ) { if ( h < 0 || h >= MAX_THREAD ) { APPL_TRACE_ERROR ( \"invalid<S2SV_blank>bt<S2SV_blank>thread<S2SV_blank>handle:%d\" , h ) ; return FALSE ; } if ( ts [ h ] . cmd_fdw == - 1 ) { APPL_TRACE_ERROR ( \"cmd<S2SV_blank>socket<S2SV_blank>is<S2SV_blank>not<S2SV_blank>created.<S2SV_blank>socket<S2SV_blank>thread<S2SV_blank>may<S2SV_blank>not<S2SV_blank>initialized\" ) ; return FALSE ; } sock_cmd_t cmd = { CMD_USER_PRIVATE , 0 , type , size , user_id } ; APPL_TRACE_DEBUG ( \"post<S2SV_blank>cmd<S2SV_blank>type:%d,<S2SV_blank>size:%d,<S2SV_blank>h:%d,<S2SV_blank>\" , type , size , h ) ; sock_cmd_t * cmd_send = & cmd ; int size_send = sizeof ( cmd ) ; if ( data && size ) { size_send = sizeof ( cmd ) + size ; cmd_send = ( sock_cmd_t * ) alloca ( size_send ) ; if ( cmd_send ) { * cmd_send = cmd ; memcpy ( cmd_send + 1 , data , size ) ; } else { APPL_TRACE_ERROR ( \"alloca<S2SV_blank>failed<S2SV_blank>at<S2SV_blank>h:%d,<S2SV_blank>cmd<S2SV_blank>type:%d,<S2SV_blank>size:%d\" , h , type , size_send ) ; return FALSE ; } } <S2SV_StartBug> return send ( ts [ h ] . cmd_fdw , cmd_send , size_send , 0 ) == size_send ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } } return TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int load_state_from_tss16 ( struct x86_emulate_ctxt * ctxt , struct tss_segment_16 * tss ) { int ret ; u8 cpl ; ctxt -> _eip = tss -> ip ; ctxt -> eflags = tss -> flag | 2 ; * reg_write ( ctxt , VCPU_REGS_RAX ) = tss -> ax ; * reg_write ( ctxt , VCPU_REGS_RCX ) = tss -> cx ; * reg_write ( ctxt , VCPU_REGS_RDX ) = tss -> dx ; * reg_write ( ctxt , VCPU_REGS_RBX ) = tss -> bx ; * reg_write ( ctxt , VCPU_REGS_RSP ) = tss -> sp ; * reg_write ( ctxt , VCPU_REGS_RBP ) = tss -> bp ; * reg_write ( ctxt , VCPU_REGS_RSI ) = tss -> si ; * reg_write ( ctxt , VCPU_REGS_RDI ) = tss -> di ; set_segment_selector ( ctxt , tss -> ldt , VCPU_SREG_LDTR ) ; set_segment_selector ( ctxt , tss -> es , VCPU_SREG_ES ) ; set_segment_selector ( ctxt , tss -> cs , VCPU_SREG_CS ) ; set_segment_selector ( ctxt , tss -> ss , VCPU_SREG_SS ) ; set_segment_selector ( ctxt , tss -> ds , VCPU_SREG_DS ) ; cpl = tss -> cs & 3 ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ldt , VCPU_SREG_LDTR , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> es , VCPU_SREG_ES , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> cs , VCPU_SREG_CS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ss , VCPU_SREG_SS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ds , VCPU_SREG_DS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7515\n\n```\nCWE-000 static int aiptek_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct usb_device * usbdev = interface_to_usbdev ( intf ) ; struct usb_endpoint_descriptor * endpoint ; struct aiptek * aiptek ; struct input_dev * inputdev ; int i ; int speeds [ ] = { 0 , AIPTEK_PROGRAMMABLE_DELAY_50 , AIPTEK_PROGRAMMABLE_DELAY_400 , AIPTEK_PROGRAMMABLE_DELAY_25 , AIPTEK_PROGRAMMABLE_DELAY_100 , AIPTEK_PROGRAMMABLE_DELAY_200 , AIPTEK_PROGRAMMABLE_DELAY_300 } ; int err = - ENOMEM ; speeds [ 0 ] = programmableDelay ; aiptek = kzalloc ( sizeof ( struct aiptek ) , GFP_KERNEL ) ; inputdev = input_allocate_device ( ) ; if ( ! aiptek || ! inputdev ) { dev_warn ( & intf -> dev , \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>or<S2SV_blank>input<S2SV_blank>device\\\\n\" ) ; goto fail1 ; } aiptek -> data = usb_alloc_coherent ( usbdev , AIPTEK_PACKET_LENGTH , GFP_ATOMIC , & aiptek -> data_dma ) ; if ( ! aiptek -> data ) { dev_warn ( & intf -> dev , \"cannot<S2SV_blank>allocate<S2SV_blank>usb<S2SV_blank>buffer\\\\n\" ) ; goto fail1 ; } aiptek -> urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! aiptek -> urb ) { dev_warn ( & intf -> dev , \"cannot<S2SV_blank>allocate<S2SV_blank>urb\\\\n\" ) ; goto fail2 ; } aiptek -> inputdev = inputdev ; aiptek -> usbdev = usbdev ; aiptek -> intf = intf ; aiptek -> ifnum = intf -> altsetting [ 0 ] . desc . bInterfaceNumber ; aiptek -> inDelay = 0 ; aiptek -> endDelay = 0 ; aiptek -> previousJitterable = 0 ; aiptek -> lastMacro = - 1 ; aiptek -> curSetting . pointerMode = AIPTEK_POINTER_EITHER_MODE ; aiptek -> curSetting . coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE ; aiptek -> curSetting . toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE ; aiptek -> curSetting . xTilt = AIPTEK_TILT_DISABLE ; aiptek -> curSetting . yTilt = AIPTEK_TILT_DISABLE ; aiptek -> curSetting . mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON ; aiptek -> curSetting . mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON ; aiptek -> curSetting . mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON ; aiptek -> curSetting . stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON ; aiptek -> curSetting . stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON ; aiptek -> curSetting . jitterDelay = jitterDelay ; aiptek -> curSetting . programmableDelay = programmableDelay ; aiptek -> newSetting = aiptek -> curSetting ; usb_make_path ( usbdev , aiptek -> features . usbPath , sizeof ( aiptek -> features . usbPath ) ) ; strlcat ( aiptek -> features . usbPath , \"/input0\" , sizeof ( aiptek -> features . usbPath ) ) ; inputdev -> name = \"Aiptek\" ; inputdev -> phys = aiptek -> features . usbPath ; usb_to_input_id ( usbdev , & inputdev -> id ) ; inputdev -> dev . parent = & intf -> dev ; input_set_drvdata ( inputdev , aiptek ) ; inputdev -> open = aiptek_open ; inputdev -> close = aiptek_close ; for ( i = 0 ; i < ARRAY_SIZE ( eventTypes ) ; ++ i ) __set_bit ( eventTypes [ i ] , inputdev -> evbit ) ; for ( i = 0 ; i < ARRAY_SIZE ( absEvents ) ; ++ i ) __set_bit ( absEvents [ i ] , inputdev -> absbit ) ; for ( i = 0 ; i < ARRAY_SIZE ( relEvents ) ; ++ i ) __set_bit ( relEvents [ i ] , inputdev -> relbit ) ; __set_bit ( MSC_SERIAL , inputdev -> mscbit ) ; for ( i = 0 ; i < ARRAY_SIZE ( buttonEvents ) ; ++ i ) __set_bit ( buttonEvents [ i ] , inputdev -> keybit ) ; for ( i = 0 ; i < ARRAY_SIZE ( macroKeyEvents ) ; ++ i ) __set_bit ( macroKeyEvents [ i ] , inputdev -> keybit ) ; input_set_abs_params ( inputdev , ABS_X , 0 , 2999 , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_Y , 0 , 2249 , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_PRESSURE , 0 , 511 , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_TILT_X , AIPTEK_TILT_MIN , AIPTEK_TILT_MAX , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_TILT_Y , AIPTEK_TILT_MIN , AIPTEK_TILT_MAX , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_WHEEL , AIPTEK_WHEEL_MIN , AIPTEK_WHEEL_MAX - 1 , 0 , 0 ) ; <S2SV_StartBug> endpoint = & intf -> altsetting [ 0 ] . endpoint [ 0 ] . desc ; <S2SV_EndBug> usb_fill_int_urb ( aiptek -> urb , aiptek -> usbdev , usb_rcvintpipe ( aiptek -> usbdev , endpoint -> bEndpointAddress ) , aiptek -> data , 8 , aiptek_irq , aiptek , endpoint -> bInterval ) ; aiptek -> urb -> transfer_dma = aiptek -> data_dma ; aiptek -> urb -> transfer_flags |= URB_NO_TRANSFER_DMA_MAP ; for ( i = 0 ; i < ARRAY_SIZE ( speeds ) ; ++ i ) { aiptek -> curSetting . programmableDelay = speeds [ i ] ; ( void ) aiptek_program_tablet ( aiptek ) ; if ( input_abs_get_max ( aiptek -> inputdev , ABS_X ) > 0 ) { dev_info ( & intf -> dev , \"Aiptek<S2SV_blank>using<S2SV_blank>%d<S2SV_blank>ms<S2SV_blank>programming<S2SV_blank>speed\\\\n\" , aiptek -> curSetting . programmableDelay ) ; break ; } } if ( i == ARRAY_SIZE ( speeds ) ) { dev_info ( & intf -> dev , \"Aiptek<S2SV_blank>tried<S2SV_blank>all<S2SV_blank>speeds,<S2SV_blank>no<S2SV_blank>sane<S2SV_blank>response\\\\n\" ) ; <S2SV_StartBug> goto fail3 ; <S2SV_EndBug> } usb_set_intfdata ( intf , aiptek ) ; err = sysfs_create_group ( & intf -> dev . kobj , & aiptek_attribute_group ) ; if ( err ) { dev_warn ( & intf -> dev , \"cannot<S2SV_blank>create<S2SV_blank>sysfs<S2SV_blank>group<S2SV_blank>err:<S2SV_blank>%d\\\\n\" , err ) ; goto fail3 ; } err = input_register_device ( aiptek -> inputdev ) ; if ( err ) { dev_warn ( & intf -> dev , \"input_register_device<S2SV_blank>returned<S2SV_blank>err:<S2SV_blank>%d\\\\n\" , err ) ; goto fail4 ; } return 0 ; fail4 : sysfs_remove_group ( & intf -> dev . kobj , & aiptek_attribute_group ) ; fail3 : usb_free_urb ( aiptek -> urb ) ; fail2 : usb_free_coherent ( usbdev , AIPTEK_PACKET_LENGTH , aiptek -> data , aiptek -> data_dma ) ; fail1 : usb_set_intfdata ( intf , NULL ) ; input_free_device ( inputdev ) ; kfree ( aiptek ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; if ( intf -> altsetting [ 0 ] . desc . bNumEndpoints < 1 ) { dev_err ( & intf -> dev , \"interface<S2SV_blank>has<S2SV_blank>%d<S2SV_blank>endpoints,<S2SV_blank>but<S2SV_blank>must<S2SV_blank>have<S2SV_blank>minimum<S2SV_blank>1\\\\n\" , intf -> altsetting [ 0 ] . desc . bNumEndpoints ) ; err = - EINVAL ; goto fail3 ; } <S2SV_ModStart> \"Aiptek<S2SV_blank>tried<S2SV_blank>all<S2SV_blank>speeds,<S2SV_blank>no<S2SV_blank>sane<S2SV_blank>response\\\\n\" ) ; err = - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4588\n\n```\nCWE-119 static int do_ip_vs_get_ctl ( struct sock * sk , int cmd , void __user * user , int * len ) { unsigned char arg [ 128 ] ; int ret = 0 ; <S2SV_StartBug> if ( ! capable ( CAP_NET_ADMIN ) ) <S2SV_EndBug> <S2SV_StartBug> return - EPERM ; <S2SV_EndBug> if ( * len < get_arglen [ GET_CMDID ( cmd ) ] ) { pr_err ( \"get_ctl:<S2SV_blank>len<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u\\\\n\" , * len , get_arglen [ GET_CMDID ( cmd ) ] ) ; return - EINVAL ; } <S2SV_StartBug> if ( copy_from_user ( arg , user , get_arglen [ GET_CMDID ( cmd ) ] ) != 0 ) <S2SV_EndBug> return - EFAULT ; if ( mutex_lock_interruptible ( & __ip_vs_mutex ) ) return - ERESTARTSYS ; switch ( cmd ) { case IP_VS_SO_GET_VERSION : { char buf [ 64 ] ; sprintf ( buf , \"IP<S2SV_blank>Virtual<S2SV_blank>Server<S2SV_blank>version<S2SV_blank>%d.%d.%d<S2SV_blank>(size=%d)\" , NVERSION ( IP_VS_VERSION_CODE ) , IP_VS_CONN_TAB_SIZE ) ; if ( copy_to_user ( user , buf , strlen ( buf ) + 1 ) != 0 ) { ret = - EFAULT ; goto out ; } * len = strlen ( buf ) + 1 ; } break ; case IP_VS_SO_GET_INFO : { struct ip_vs_getinfo info ; info . version = IP_VS_VERSION_CODE ; info . size = IP_VS_CONN_TAB_SIZE ; info . num_services = ip_vs_num_services ; if ( copy_to_user ( user , & info , sizeof ( info ) ) != 0 ) ret = - EFAULT ; } break ; case IP_VS_SO_GET_SERVICES : { struct ip_vs_get_services * get ; int size ; get = ( struct ip_vs_get_services * ) arg ; size = sizeof ( * get ) + sizeof ( struct ip_vs_service_entry ) * get -> num_services ; if ( * len != size ) { pr_err ( \"length:<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u\\\\n\" , * len , size ) ; ret = - EINVAL ; goto out ; } ret = __ip_vs_get_service_entries ( get , user ) ; } break ; case IP_VS_SO_GET_SERVICE : { struct ip_vs_service_entry * entry ; struct ip_vs_service * svc ; union nf_inet_addr addr ; entry = ( struct ip_vs_service_entry * ) arg ; addr . ip = entry -> addr ; if ( entry -> fwmark ) svc = __ip_vs_svc_fwm_get ( AF_INET , entry -> fwmark ) ; else svc = __ip_vs_service_get ( AF_INET , entry -> protocol , & addr , entry -> port ) ; if ( svc ) { ip_vs_copy_service ( entry , svc ) ; if ( copy_to_user ( user , entry , sizeof ( * entry ) ) != 0 ) ret = - EFAULT ; ip_vs_service_put ( svc ) ; } else ret = - ESRCH ; } break ; case IP_VS_SO_GET_DESTS : { struct ip_vs_get_dests * get ; int size ; get = ( struct ip_vs_get_dests * ) arg ; size = sizeof ( * get ) + sizeof ( struct ip_vs_dest_entry ) * get -> num_dests ; if ( * len != size ) { pr_err ( \"length:<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u\\\\n\" , * len , size ) ; ret = - EINVAL ; goto out ; } ret = __ip_vs_get_dest_entries ( get , user ) ; } break ; case IP_VS_SO_GET_TIMEOUT : { struct ip_vs_timeout_user t ; __ip_vs_get_timeouts ( & t ) ; if ( copy_to_user ( user , & t , sizeof ( t ) ) != 0 ) ret = - EFAULT ; } break ; case IP_VS_SO_GET_DAEMON : { struct ip_vs_daemon_user d [ 2 ] ; memset ( & d , 0 , sizeof ( d ) ) ; if ( ip_vs_sync_state & IP_VS_STATE_MASTER ) { d [ 0 ] . state = IP_VS_STATE_MASTER ; strlcpy ( d [ 0 ] . mcast_ifn , ip_vs_master_mcast_ifn , sizeof ( d [ 0 ] . mcast_ifn ) ) ; d [ 0 ] . syncid = ip_vs_master_syncid ; } if ( ip_vs_sync_state & IP_VS_STATE_BACKUP ) { d [ 1 ] . state = IP_VS_STATE_BACKUP ; strlcpy ( d [ 1 ] . mcast_ifn , ip_vs_backup_mcast_ifn , sizeof ( d [ 1 ] . mcast_ifn ) ) ; d [ 1 ] . syncid = ip_vs_backup_syncid ; } if ( copy_to_user ( user , & d , sizeof ( d ) ) != 0 ) ret = - EFAULT ; } break ; default : ret = - EINVAL ; } out : mutex_unlock ( & __ip_vs_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; unsigned int copylen ; <S2SV_ModStart> return - EPERM ; if ( cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_GET_MAX ) return - EINVAL <S2SV_ModStart> EINVAL ; } copylen = get_arglen [ GET_CMDID ( cmd ) ] ; if ( copylen > 128 ) return - EINVAL ; <S2SV_ModStart> , user , copylen <S2SV_ModEnd> ) != 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15594\n\n```\nCWE-200 unsigned paravirt_patch_call ( void * insnbuf , const void * target , u16 tgt_clobbers , unsigned long addr , u16 site_clobbers , unsigned len ) { struct branch * b = insnbuf ; unsigned long delta = ( unsigned long ) target - ( addr + 5 ) ; <S2SV_StartBug> if ( tgt_clobbers & ~ site_clobbers ) <S2SV_EndBug> return len ; <S2SV_StartBug> if ( len < 5 ) <S2SV_EndBug> return len ; b -> opcode = 0xe8 ; b -> delta = delta ; BUILD_BUG_ON ( sizeof ( * b ) != 5 ) ; return 5 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( len < 5 ) { # ifdef CONFIG_RETPOLINE WARN_ONCE ( \"Failing<S2SV_blank>to<S2SV_blank>patch<S2SV_blank>indirect<S2SV_blank>CALL<S2SV_blank>in<S2SV_blank>%ps\\\\n\" , ( void * ) addr ) ; # endif <S2SV_ModEnd> return len ; <S2SV_ModStart> return len ; } <S2SV_ModEnd> b -> opcode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-704(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12453\n\n```\nCWE-704 void xgroupCommand ( client * c ) { const char * help [ ] = { \"CREATE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><key><S2SV_blank><groupname><S2SV_blank><id<S2SV_blank>or<S2SV_blank>$><S2SV_blank><S2SV_blank>--<S2SV_blank>Create<S2SV_blank>a<S2SV_blank>new<S2SV_blank>consumer<S2SV_blank>group.\" , \"SETID<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><key><S2SV_blank><groupname><S2SV_blank><id<S2SV_blank>or<S2SV_blank>$><S2SV_blank><S2SV_blank>--<S2SV_blank>Set<S2SV_blank>the<S2SV_blank>current<S2SV_blank>group<S2SV_blank>ID.\" , \"DELGROUP<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><key><S2SV_blank><groupname><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--<S2SV_blank>Remove<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>group.\" , \"DELCONSUMER<S2SV_blank><key><S2SV_blank><groupname><S2SV_blank><consumer><S2SV_blank>--<S2SV_blank>Remove<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>conusmer.\" , \"HELP<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--<S2SV_blank>Prints<S2SV_blank>this<S2SV_blank>help.\" , NULL } ; stream * s = NULL ; sds grpname = NULL ; streamCG * cg = NULL ; char * opt = c -> argv [ 1 ] -> ptr ; if ( c -> argc >= 4 ) { robj * o = lookupKeyWriteOrReply ( c , c -> argv [ 2 ] , shared . nokeyerr ) ; <S2SV_StartBug> if ( o == NULL ) return ; <S2SV_EndBug> s = o -> ptr ; grpname = c -> argv [ 3 ] -> ptr ; if ( ( cg = streamLookupCG ( s , grpname ) ) == NULL && ( ! strcasecmp ( opt , \"SETID\" ) || ! strcasecmp ( opt , \"DELCONSUMER\" ) ) ) { addReplyErrorFormat ( c , \"-NOGROUP<S2SV_blank>No<S2SV_blank>such<S2SV_blank>consumer<S2SV_blank>group<S2SV_blank>\\'%s\\'<S2SV_blank>\" \"for<S2SV_blank>key<S2SV_blank>name<S2SV_blank>\\'%s\\'\" , ( char * ) grpname , ( char * ) c -> argv [ 2 ] -> ptr ) ; return ; } } if ( ! strcasecmp ( opt , \"CREATE\" ) && c -> argc == 5 ) { streamID id ; if ( ! strcmp ( c -> argv [ 4 ] -> ptr , \"$\" ) ) { id = s -> last_id ; } else if ( streamParseIDOrReply ( c , c -> argv [ 4 ] , & id , 0 ) != C_OK ) { return ; } streamCG * cg = streamCreateCG ( s , grpname , sdslen ( grpname ) , & id ) ; if ( cg ) { addReply ( c , shared . ok ) ; server . dirty ++ ; } else { addReplySds ( c , sdsnew ( \"-BUSYGROUP<S2SV_blank>Consumer<S2SV_blank>Group<S2SV_blank>name<S2SV_blank>already<S2SV_blank>exists\\\\r\\\\n\" ) ) ; } } else if ( ! strcasecmp ( opt , \"SETID\" ) && c -> argc == 5 ) { streamID id ; if ( ! strcmp ( c -> argv [ 4 ] -> ptr , \"$\" ) ) { id = s -> last_id ; } else if ( streamParseIDOrReply ( c , c -> argv [ 4 ] , & id , 0 ) != C_OK ) { return ; } cg -> last_id = id ; addReply ( c , shared . ok ) ; } else if ( ! strcasecmp ( opt , \"DESTROY\" ) && c -> argc == 4 ) { if ( cg ) { raxRemove ( s -> cgroups , ( unsigned char * ) grpname , sdslen ( grpname ) , NULL ) ; streamFreeCG ( cg ) ; addReply ( c , shared . cone ) ; } else { addReply ( c , shared . czero ) ; } } else if ( ! strcasecmp ( opt , \"DELCONSUMER\" ) && c -> argc == 5 ) { long long pending = streamDelConsumer ( cg , c -> argv [ 4 ] -> ptr ) ; addReplyLongLong ( c , pending ) ; server . dirty ++ ; } else if ( ! strcasecmp ( opt , \"HELP\" ) ) { addReplyHelp ( c , help ) ; } else { addReply ( c , shared . syntaxerr ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o == NULL || checkType ( c , o , OBJ_STREAM )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11558\n\n```\nCWE-416 GF_Err audio_sample_entry_Read ( GF_Box * s , GF_BitStream * bs ) { GF_MPEGAudioSampleEntryBox * ptr ; char * data ; u8 a , b , c , d ; u32 i , size , v , nb_alnum ; GF_Err e ; u64 pos , start ; ptr = ( GF_MPEGAudioSampleEntryBox * ) s ; start = gf_bs_get_position ( bs ) ; gf_bs_seek ( bs , start + 8 ) ; v = gf_bs_read_u16 ( bs ) ; if ( v ) ptr -> is_qtff = 1 ; if ( v == 1 ) { gf_bs_seek ( bs , start + 8 + 20 + 4 ) ; a = gf_bs_read_u8 ( bs ) ; b = gf_bs_read_u8 ( bs ) ; c = gf_bs_read_u8 ( bs ) ; d = gf_bs_read_u8 ( bs ) ; nb_alnum = 0 ; if ( isalnum ( a ) ) nb_alnum ++ ; if ( isalnum ( b ) ) nb_alnum ++ ; if ( isalnum ( c ) ) nb_alnum ++ ; if ( isalnum ( d ) ) nb_alnum ++ ; if ( nb_alnum > 2 ) ptr -> is_qtff = 0 ; } gf_bs_seek ( bs , start ) ; e = gf_isom_audio_sample_entry_read ( ( GF_AudioSampleEntryBox * ) s , bs ) ; if ( e ) return e ; pos = gf_bs_get_position ( bs ) ; size = ( u32 ) s -> size ; if ( gf_bs_get_cookie ( bs ) ) { ptr -> is_qtff |= 1 << 16 ; } e = gf_isom_box_array_read ( s , bs , audio_sample_entry_AddBox ) ; if ( ! e ) return GF_OK ; if ( size < 8 ) return GF_ISOM_INVALID_FILE ; gf_bs_seek ( bs , pos ) ; data = ( char * ) gf_malloc ( sizeof ( char ) * size ) ; gf_bs_read_data ( bs , data , size ) ; for ( i = 0 ; i < size - 8 ; i ++ ) { if ( GF_4CC ( ( u32 ) data [ i + 4 ] , ( u8 ) data [ i + 5 ] , ( u8 ) data [ i + 6 ] , ( u8 ) data [ i + 7 ] ) == GF_ISOM_BOX_TYPE_ESDS ) { <S2SV_StartBug> GF_BitStream * mybs = gf_bs_new ( data + i , size - i , GF_BITSTREAM_READ ) ; <S2SV_EndBug> if ( ptr -> esd ) { <S2SV_StartBug> gf_isom_box_del ( ( GF_Box * ) ptr -> esd ) ; <S2SV_EndBug> ptr -> esd = NULL ; } e = gf_isom_box_parse ( ( GF_Box * * ) & ptr -> esd , mybs ) ; if ( e == GF_OK ) { gf_isom_box_add_for_dump_mode ( ( GF_Box * ) ptr , ( GF_Box * ) ptr -> esd ) ; } else if ( ptr -> esd ) { gf_isom_box_del ( ( GF_Box * ) ptr -> esd ) ; ptr -> esd = NULL ; } gf_bs_del ( mybs ) ; break ; } } gf_free ( data ) ; return e ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> GF_ISOM_BOX_TYPE_ESDS ) { extern Bool use_dump_mode ; <S2SV_ModStart> esd ) { if ( ! use_dump_mode )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8011\n\n```\nCWE-120 int lldp_decode ( struct lldpd * cfg , char * frame , int s , struct lldpd_hardware * hardware , struct lldpd_chassis * * newchassis , struct lldpd_port * * newport ) { struct lldpd_chassis * chassis ; struct lldpd_port * port ; const char lldpaddr [ ] = LLDP_MULTICAST_ADDR ; const char dot1 [ ] = LLDP_TLV_ORG_DOT1 ; const char dot3 [ ] = LLDP_TLV_ORG_DOT3 ; const char med [ ] = LLDP_TLV_ORG_MED ; const char dcbx [ ] = LLDP_TLV_ORG_DCBX ; unsigned char orgid [ 3 ] ; int length , gotend = 0 , ttl_received = 0 ; int tlv_size , tlv_type , tlv_subtype ; u_int8_t * pos , * tlv ; char * b ; # ifdef ENABLE_DOT1 struct lldpd_vlan * vlan = NULL ; int vlan_len ; struct lldpd_ppvid * ppvid ; struct lldpd_pi * pi = NULL ; # endif struct lldpd_mgmt * mgmt ; int af ; u_int8_t addr_str_length , addr_str_buffer [ 32 ] ; u_int8_t addr_family , addr_length , * addr_ptr , iface_subtype ; u_int32_t iface_number , iface ; # ifdef ENABLE_CUSTOM struct lldpd_custom * custom = NULL ; # endif log_debug ( \"lldp\" , \"receive<S2SV_blank>LLDP<S2SV_blank>PDU<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; if ( ( chassis = calloc ( 1 , sizeof ( struct lldpd_chassis ) ) ) == NULL ) { log_warn ( \"lldp\" , \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>remote<S2SV_blank>chassis\" ) ; return - 1 ; } TAILQ_INIT ( & chassis -> c_mgmt ) ; if ( ( port = calloc ( 1 , sizeof ( struct lldpd_port ) ) ) == NULL ) { log_warn ( \"lldp\" , \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>remote<S2SV_blank>port\" ) ; free ( chassis ) ; return - 1 ; } # ifdef ENABLE_DOT1 TAILQ_INIT ( & port -> p_vlans ) ; TAILQ_INIT ( & port -> p_ppvids ) ; TAILQ_INIT ( & port -> p_pids ) ; # endif # ifdef ENABLE_CUSTOM TAILQ_INIT ( & port -> p_custom_list ) ; # endif length = s ; pos = ( u_int8_t * ) frame ; if ( length < 2 * ETHER_ADDR_LEN + sizeof ( u_int16_t ) ) { log_warnx ( \"lldp\" , \"too<S2SV_blank>short<S2SV_blank>frame<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } if ( PEEK_CMP ( lldpaddr , ETHER_ADDR_LEN ) != 0 ) { log_info ( \"lldp\" , \"frame<S2SV_blank>not<S2SV_blank>targeted<S2SV_blank>at<S2SV_blank>LLDP<S2SV_blank>multicast<S2SV_blank>address<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_DISCARD ( ETHER_ADDR_LEN ) ; if ( PEEK_UINT16 != ETHERTYPE_LLDP ) { log_info ( \"lldp\" , \"non<S2SV_blank>LLDP<S2SV_blank>frame<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } while ( length && ( ! gotend ) ) { if ( length < 2 ) { log_warnx ( \"lldp\" , \"tlv<S2SV_blank>header<S2SV_blank>too<S2SV_blank>short<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } tlv_size = PEEK_UINT16 ; tlv_type = tlv_size >> 9 ; tlv_size = tlv_size & 0x1ff ; ( void ) PEEK_SAVE ( tlv ) ; if ( length < tlv_size ) { log_warnx ( \"lldp\" , \"frame<S2SV_blank>too<S2SV_blank>short<S2SV_blank>for<S2SV_blank>tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } switch ( tlv_type ) { case LLDP_TLV_END : if ( tlv_size != 0 ) { log_warnx ( \"lldp\" , \"lldp<S2SV_blank>end<S2SV_blank>received<S2SV_blank>with<S2SV_blank>size<S2SV_blank>not<S2SV_blank>null<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } if ( length ) log_debug ( \"lldp\" , \"extra<S2SV_blank>data<S2SV_blank>after<S2SV_blank>lldp<S2SV_blank>end<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; gotend = 1 ; break ; case LLDP_TLV_CHASSIS_ID : case LLDP_TLV_PORT_ID : CHECK_TLV_SIZE ( 2 , \"Port<S2SV_blank>Id\" ) ; tlv_subtype = PEEK_UINT8 ; if ( ( tlv_subtype == 0 ) || ( tlv_subtype > 7 ) ) { log_warnx ( \"lldp\" , \"unknown<S2SV_blank>subtype<S2SV_blank>for<S2SV_blank>tlv<S2SV_blank>id<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } if ( ( b = ( char * ) calloc ( 1 , tlv_size - 1 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>id<S2SV_blank>tlv<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( b , tlv_size - 1 ) ; if ( tlv_type == LLDP_TLV_PORT_ID ) { port -> p_id_subtype = tlv_subtype ; port -> p_id = b ; port -> p_id_len = tlv_size - 1 ; } else { chassis -> c_id_subtype = tlv_subtype ; chassis -> c_id = b ; chassis -> c_id_len = tlv_size - 1 ; } break ; case LLDP_TLV_TTL : CHECK_TLV_SIZE ( 2 , \"TTL\" ) ; chassis -> c_ttl = PEEK_UINT16 ; ttl_received = 1 ; break ; case LLDP_TLV_PORT_DESCR : case LLDP_TLV_SYSTEM_NAME : case LLDP_TLV_SYSTEM_DESCR : if ( tlv_size < 1 ) { log_debug ( \"lldp\" , \"empty<S2SV_blank>tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; break ; } if ( ( b = ( char * ) calloc ( 1 , tlv_size + 1 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>string<S2SV_blank>tlv<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( b , tlv_size ) ; if ( tlv_type == LLDP_TLV_PORT_DESCR ) port -> p_descr = b ; else if ( tlv_type == LLDP_TLV_SYSTEM_NAME ) chassis -> c_name = b ; else chassis -> c_descr = b ; break ; case LLDP_TLV_SYSTEM_CAP : CHECK_TLV_SIZE ( 4 , \"System<S2SV_blank>capabilities\" ) ; chassis -> c_cap_available = PEEK_UINT16 ; chassis -> c_cap_enabled = PEEK_UINT16 ; break ; case LLDP_TLV_MGMT_ADDR : CHECK_TLV_SIZE ( 1 , \"Management<S2SV_blank>address\" ) ; addr_str_length = PEEK_UINT8 ; <S2SV_StartBug> CHECK_TLV_SIZE ( 1 + addr_str_length , \"Management<S2SV_blank>address\" ) ; <S2SV_EndBug> PEEK_BYTES ( addr_str_buffer , addr_str_length ) ; addr_length = addr_str_length - 1 ; addr_family = addr_str_buffer [ 0 ] ; addr_ptr = & addr_str_buffer [ 1 ] ; CHECK_TLV_SIZE ( 1 + addr_str_length + 5 , \"Management<S2SV_blank>address\" ) ; iface_subtype = PEEK_UINT8 ; iface_number = PEEK_UINT32 ; af = lldpd_af_from_lldp_proto ( addr_family ) ; if ( af == LLDPD_AF_UNSPEC ) break ; if ( iface_subtype == LLDP_MGMT_IFACE_IFINDEX ) iface = iface_number ; else iface = 0 ; mgmt = lldpd_alloc_mgmt ( af , addr_ptr , addr_length , iface ) ; if ( mgmt == NULL ) { assert ( errno == ENOMEM ) ; log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>management<S2SV_blank>address\" ) ; goto malformed ; } TAILQ_INSERT_TAIL ( & chassis -> c_mgmt , mgmt , m_entries ) ; break ; case LLDP_TLV_ORG : <S2SV_StartBug> CHECK_TLV_SIZE ( 4 , \"Organisational\" ) ; <S2SV_EndBug> PEEK_BYTES ( orgid , sizeof ( orgid ) ) ; tlv_subtype = PEEK_UINT8 ; if ( memcmp ( dot1 , orgid , sizeof ( orgid ) ) == 0 ) { # ifndef ENABLE_DOT1 hardware -> h_rx_unrecognized_cnt ++ ; # else switch ( tlv_subtype ) { case LLDP_TLV_DOT1_VLANNAME : CHECK_TLV_SIZE ( 7 , \"VLAN\" ) ; if ( ( vlan = ( struct lldpd_vlan * ) calloc ( 1 , sizeof ( struct lldpd_vlan ) ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>vlan<S2SV_blank>\" \"structure<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } vlan -> v_vid = PEEK_UINT16 ; vlan_len = PEEK_UINT8 ; CHECK_TLV_SIZE ( 7 + vlan_len , \"VLAN\" ) ; if ( ( vlan -> v_name = ( char * ) calloc ( 1 , vlan_len + 1 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>vlan<S2SV_blank>name<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( vlan -> v_name , vlan_len ) ; TAILQ_INSERT_TAIL ( & port -> p_vlans , vlan , v_entries ) ; vlan = NULL ; break ; case LLDP_TLV_DOT1_PVID : CHECK_TLV_SIZE ( 6 , \"PVID\" ) ; port -> p_pvid = PEEK_UINT16 ; break ; case LLDP_TLV_DOT1_PPVID : CHECK_TLV_SIZE ( 7 , \"PPVID\" ) ; if ( ( ppvid = ( struct lldpd_ppvid * ) calloc ( 1 , sizeof ( struct lldpd_ppvid ) ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>ppvid<S2SV_blank>\" \"structure<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } ppvid -> p_cap_status = PEEK_UINT8 ; ppvid -> p_ppvid = PEEK_UINT16 ; TAILQ_INSERT_TAIL ( & port -> p_ppvids , ppvid , p_entries ) ; break ; case LLDP_TLV_DOT1_PI : CHECK_TLV_SIZE ( 5 , \"PI\" ) ; if ( ( pi = ( struct lldpd_pi * ) calloc ( 1 , sizeof ( struct lldpd_pi ) ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>PI<S2SV_blank>\" \"structure<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } pi -> p_pi_len = PEEK_UINT8 ; CHECK_TLV_SIZE ( 5 + pi -> p_pi_len , \"PI\" ) ; if ( ( pi -> p_pi = ( char * ) calloc ( 1 , pi -> p_pi_len ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>pid<S2SV_blank>name<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( pi -> p_pi , pi -> p_pi_len ) ; TAILQ_INSERT_TAIL ( & port -> p_pids , pi , p_entries ) ; pi = NULL ; break ; default : hardware -> h_rx_unrecognized_cnt ++ ; } # endif } else if ( memcmp ( dot3 , orgid , sizeof ( orgid ) ) == 0 ) { # ifndef ENABLE_DOT3 hardware -> h_rx_unrecognized_cnt ++ ; # else switch ( tlv_subtype ) { case LLDP_TLV_DOT3_MAC : CHECK_TLV_SIZE ( 9 , \"MAC/PHY\" ) ; port -> p_macphy . autoneg_support = PEEK_UINT8 ; port -> p_macphy . autoneg_enabled = ( port -> p_macphy . autoneg_support & 0x2 ) >> 1 ; port -> p_macphy . autoneg_support = port -> p_macphy . autoneg_support & 0x1 ; port -> p_macphy . autoneg_advertised = PEEK_UINT16 ; port -> p_macphy . mau_type = PEEK_UINT16 ; break ; case LLDP_TLV_DOT3_LA : CHECK_TLV_SIZE ( 9 , \"Link<S2SV_blank>aggregation\" ) ; PEEK_DISCARD_UINT8 ; port -> p_aggregid = PEEK_UINT32 ; break ; case LLDP_TLV_DOT3_MFS : CHECK_TLV_SIZE ( 6 , \"MFS\" ) ; port -> p_mfs = PEEK_UINT16 ; break ; case LLDP_TLV_DOT3_POWER : CHECK_TLV_SIZE ( 7 , \"Power\" ) ; port -> p_power . devicetype = PEEK_UINT8 ; port -> p_power . supported = ( port -> p_power . devicetype & 0x2 ) >> 1 ; port -> p_power . enabled = ( port -> p_power . devicetype & 0x4 ) >> 2 ; port -> p_power . paircontrol = ( port -> p_power . devicetype & 0x8 ) >> 3 ; port -> p_power . devicetype = ( port -> p_power . devicetype & 0x1 ) ? LLDP_DOT3_POWER_PSE : LLDP_DOT3_POWER_PD ; port -> p_power . pairs = PEEK_UINT8 ; port -> p_power . class = PEEK_UINT8 ; if ( tlv_size >= 12 ) { port -> p_power . powertype = PEEK_UINT8 ; port -> p_power . source = ( port -> p_power . powertype & ( 1 << 5 | 1 << 4 ) ) >> 4 ; port -> p_power . priority = ( port -> p_power . powertype & ( 1 << 1 | 1 << 0 ) ) ; port -> p_power . powertype = ( port -> p_power . powertype & ( 1 << 7 ) ) ? LLDP_DOT3_POWER_8023AT_TYPE1 : LLDP_DOT3_POWER_8023AT_TYPE2 ; port -> p_power . requested = PEEK_UINT16 ; port -> p_power . allocated = PEEK_UINT16 ; } else port -> p_power . powertype = LLDP_DOT3_POWER_8023AT_OFF ; break ; default : hardware -> h_rx_unrecognized_cnt ++ ; } # endif } else if ( memcmp ( med , orgid , sizeof ( orgid ) ) == 0 ) { # ifndef ENABLE_LLDPMED hardware -> h_rx_unrecognized_cnt ++ ; # else u_int32_t policy ; unsigned loctype ; unsigned power ; switch ( tlv_subtype ) { case LLDP_TLV_MED_CAP : CHECK_TLV_SIZE ( 7 , \"LLDP-MED<S2SV_blank>capabilities\" ) ; chassis -> c_med_cap_available = PEEK_UINT16 ; chassis -> c_med_type = PEEK_UINT8 ; port -> p_med_cap_enabled |= LLDP_MED_CAP_CAP ; break ; case LLDP_TLV_MED_POLICY : CHECK_TLV_SIZE ( 8 , \"LLDP-MED<S2SV_blank>policy\" ) ; policy = PEEK_UINT32 ; if ( ( ( policy >> 24 ) < 1 ) || ( ( policy >> 24 ) > LLDP_MED_APPTYPE_LAST ) ) { log_info ( \"lldp\" , \"unknown<S2SV_blank>policy<S2SV_blank>field<S2SV_blank>%d<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , policy , hardware -> h_ifname ) ; break ; } port -> p_med_policy [ ( policy >> 24 ) - 1 ] . type = ( policy >> 24 ) ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . unknown = ( ( policy & 0x800000 ) != 0 ) ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . tagged = ( ( policy & 0x400000 ) != 0 ) ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . vid = ( policy & 0x001FFE00 ) >> 9 ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . priority = ( policy & 0x1C0 ) >> 6 ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . dscp = policy & 0x3F ; port -> p_med_cap_enabled |= LLDP_MED_CAP_POLICY ; break ; case LLDP_TLV_MED_LOCATION : CHECK_TLV_SIZE ( 5 , \"LLDP-MED<S2SV_blank>Location\" ) ; loctype = PEEK_UINT8 ; if ( ( loctype < 1 ) || ( loctype > LLDP_MED_LOCFORMAT_LAST ) ) { log_info ( \"lldp\" , \"unknown<S2SV_blank>location<S2SV_blank>type<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; break ; } if ( ( port -> p_med_location [ loctype - 1 ] . data = ( char * ) malloc ( tlv_size - 5 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>LLDP-MED<S2SV_blank>location<S2SV_blank>for<S2SV_blank>\" \"frame<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( port -> p_med_location [ loctype - 1 ] . data , tlv_size - 5 ) ; port -> p_med_location [ loctype - 1 ] . data_len = tlv_size - 5 ; port -> p_med_location [ loctype - 1 ] . format = loctype ; port -> p_med_cap_enabled |= LLDP_MED_CAP_LOCATION ; break ; case LLDP_TLV_MED_MDI : CHECK_TLV_SIZE ( 7 , \"LLDP-MED<S2SV_blank>PoE-MDI\" ) ; power = PEEK_UINT8 ; switch ( power & 0xC0 ) { case 0x0 : port -> p_med_power . devicetype = LLDP_MED_POW_TYPE_PSE ; port -> p_med_cap_enabled |= LLDP_MED_CAP_MDI_PSE ; switch ( power & 0x30 ) { case 0x0 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_UNKNOWN ; break ; case 0x10 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_PRIMARY ; break ; case 0x20 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_BACKUP ; break ; default : port -> p_med_power . source = LLDP_MED_POW_SOURCE_RESERVED ; } break ; case 0x40 : port -> p_med_power . devicetype = LLDP_MED_POW_TYPE_PD ; port -> p_med_cap_enabled |= LLDP_MED_CAP_MDI_PD ; switch ( power & 0x30 ) { case 0x0 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_UNKNOWN ; break ; case 0x10 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_PSE ; break ; case 0x20 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_LOCAL ; break ; default : port -> p_med_power . source = LLDP_MED_POW_SOURCE_BOTH ; } break ; default : port -> p_med_power . devicetype = LLDP_MED_POW_TYPE_RESERVED ; } if ( ( power & 0x0F ) > LLDP_MED_POW_PRIO_LOW ) port -> p_med_power . priority = LLDP_MED_POW_PRIO_UNKNOWN ; else port -> p_med_power . priority = power & 0x0F ; port -> p_med_power . val = PEEK_UINT16 ; break ; case LLDP_TLV_MED_IV_HW : case LLDP_TLV_MED_IV_SW : case LLDP_TLV_MED_IV_FW : case LLDP_TLV_MED_IV_SN : case LLDP_TLV_MED_IV_MANUF : case LLDP_TLV_MED_IV_MODEL : case LLDP_TLV_MED_IV_ASSET : if ( tlv_size <= 4 ) b = NULL ; else { if ( ( b = ( char * ) malloc ( tlv_size - 3 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>\" \"memory<S2SV_blank>for<S2SV_blank>LLDP-MED<S2SV_blank>\" \"inventory<S2SV_blank>for<S2SV_blank>frame<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( b , tlv_size - 4 ) ; b [ tlv_size - 4 ] = '\\\\0' ; } switch ( tlv_subtype ) { case LLDP_TLV_MED_IV_HW : chassis -> c_med_hw = b ; break ; case LLDP_TLV_MED_IV_FW : chassis -> c_med_fw = b ; break ; case LLDP_TLV_MED_IV_SW : chassis -> c_med_sw = b ; break ; case LLDP_TLV_MED_IV_SN : chassis -> c_med_sn = b ; break ; case LLDP_TLV_MED_IV_MANUF : chassis -> c_med_manuf = b ; break ; case LLDP_TLV_MED_IV_MODEL : chassis -> c_med_model = b ; break ; case LLDP_TLV_MED_IV_ASSET : chassis -> c_med_asset = b ; break ; } port -> p_med_cap_enabled |= LLDP_MED_CAP_IV ; break ; default : hardware -> h_rx_unrecognized_cnt ++ ; } # endif } else if ( memcmp ( dcbx , orgid , sizeof ( orgid ) ) == 0 ) { log_debug ( \"lldp\" , \"unsupported<S2SV_blank>DCBX<S2SV_blank>tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>ignore\" , hardware -> h_ifname ) ; hardware -> h_rx_unrecognized_cnt ++ ; } else { log_debug ( \"lldp\" , \"unknown<S2SV_blank>org<S2SV_blank>tlv<S2SV_blank>[%02x:%02x:%02x]<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , orgid [ 0 ] , orgid [ 1 ] , orgid [ 2 ] , hardware -> h_ifname ) ; hardware -> h_rx_unrecognized_cnt ++ ; # ifdef ENABLE_CUSTOM custom = ( struct lldpd_custom * ) calloc ( 1 , sizeof ( struct lldpd_custom ) ) ; if ( ! custom ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>custom<S2SV_blank>TLV\" ) ; goto malformed ; } custom -> oui_info_len = tlv_size > 4 ? tlv_size - 4 : 0 ; memcpy ( custom -> oui , orgid , sizeof ( custom -> oui ) ) ; custom -> subtype = tlv_subtype ; if ( custom -> oui_info_len > 0 ) { custom -> oui_info = malloc ( custom -> oui_info_len ) ; if ( ! custom -> oui_info ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>custom<S2SV_blank>TLV<S2SV_blank>data\" ) ; goto malformed ; } PEEK_BYTES ( custom -> oui_info , custom -> oui_info_len ) ; } TAILQ_INSERT_TAIL ( & port -> p_custom_list , custom , next ) ; custom = NULL ; # endif } break ; default : log_warnx ( \"lldp\" , \"unknown<S2SV_blank>tlv<S2SV_blank>(%d)<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , tlv_type , hardware -> h_ifname ) ; goto malformed ; } if ( pos > tlv + tlv_size ) { log_warnx ( \"lldp\" , \"BUG:<S2SV_blank>already<S2SV_blank>past<S2SV_blank>TLV!\" ) ; goto malformed ; } PEEK_DISCARD ( tlv + tlv_size - pos ) ; } if ( ( chassis -> c_id == NULL ) || ( port -> p_id == NULL ) || ( ! ttl_received ) || ( gotend == 0 ) ) { log_warnx ( \"lldp\" , \"some<S2SV_blank>mandatory<S2SV_blank>tlv<S2SV_blank>are<S2SV_blank>missing<S2SV_blank>for<S2SV_blank>frame<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } * newchassis = chassis ; * newport = port ; return 1 ; malformed : # ifdef ENABLE_CUSTOM free ( custom ) ; # endif # ifdef ENABLE_DOT1 free ( vlan ) ; free ( pi ) ; # endif lldpd_chassis_cleanup ( chassis , 1 ) ; lldpd_port_cleanup ( port , 1 ) ; free ( port ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = PEEK_UINT8 ; if ( addr_str_length > sizeof ( addr_str_buffer ) ) { log_warnx ( \"lldp\" , \"too<S2SV_blank>large<S2SV_blank>management<S2SV_blank>address<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } <S2SV_ModStart> : CHECK_TLV_SIZE ( 1 + ( int ) sizeof ( orgid ) <S2SV_ModEnd> , \"Organisational\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-400 void js_RegExp_prototype_exec ( js_State * J , js_Regexp * re , const char * text ) { <S2SV_StartBug> int i ; <S2SV_EndBug> int opts ; Resub m ; opts = 0 ; if ( re -> flags & JS_REGEXP_G ) { if ( re -> last > strlen ( text ) ) { re -> last = 0 ; js_pushnull ( J ) ; return ; } if ( re -> last > 0 ) { text += re -> last ; opts |= REG_NOTBOL ; } } <S2SV_StartBug> if ( ! js_regexec ( re -> prog , text , & m , opts ) ) { <S2SV_EndBug> js_newarray ( J ) ; js_pushstring ( J , text ) ; js_setproperty ( J , - 2 , \"input\" ) ; js_pushnumber ( J , js_utfptrtoidx ( text , m . sub [ 0 ] . sp ) ) ; js_setproperty ( J , - 2 , \"index\" ) ; for ( i = 0 ; i < m . nsub ; ++ i ) { js_pushlstring ( J , m . sub [ i ] . sp , m . sub [ i ] . ep - m . sub [ i ] . sp ) ; js_setindex ( J , - 2 , i ) ; } if ( re -> flags & JS_REGEXP_G ) re -> last = re -> last + ( m . sub [ 0 ] . ep - text ) ; return ; } if ( re -> flags & JS_REGEXP_G ) re -> last = 0 ; js_pushnull ( J ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { int result ; int <S2SV_ModStart> ; } } result = <S2SV_ModEnd> js_regexec ( re <S2SV_ModStart> , opts ) ; if ( result < 0 ) js_error ( J , \"regexec<S2SV_blank>failed\" ) ; if ( result == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int caif_seqpkt_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sk_buff * skb ; int ret ; int copylen ; ret = - EOPNOTSUPP ; if ( m -> msg_flags & MSG_OOB ) <S2SV_StartBug> goto read_error ; <S2SV_EndBug> m -> msg_namelen = 0 ; skb = skb_recv_datagram ( sk , flags , 0 , & ret ) ; if ( ! skb ) goto read_error ; copylen = skb -> len ; if ( len < copylen ) { m -> msg_flags |= MSG_TRUNC ; copylen = len ; } ret = skb_copy_datagram_iovec ( skb , 0 , m -> msg_iov , copylen ) ; if ( ret ) goto out_free ; ret = ( flags & MSG_TRUNC ) ? skb -> len : copylen ; out_free : skb_free_datagram ( sk , skb ) ; caif_check_flow_release ( sk ) ; return ret ; read_error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto read_error <S2SV_ModEnd> ; skb =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 int nfs4_open_revalidate ( struct inode * dir , struct dentry * dentry , int openflags , struct nameidata * nd ) { struct path path = { . mnt = nd -> path . mnt , . dentry = dentry , } ; struct rpc_cred * cred ; struct nfs4_state * state ; <S2SV_StartBug> cred = rpc_lookup_cred ( ) ; <S2SV_EndBug> if ( IS_ERR ( cred ) ) return PTR_ERR ( cred ) ; <S2SV_StartBug> state = nfs4_do_open ( dir , & path , openflags , NULL , cred ) ; <S2SV_EndBug> put_rpccred ( cred ) ; if ( IS_ERR ( state ) ) { switch ( PTR_ERR ( state ) ) { case - EPERM : case - EACCES : case - EDQUOT : case - ENOSPC : case - EROFS : lookup_instantiate_filp ( nd , ( struct dentry * ) state , NULL ) ; return 1 ; default : goto out_drop ; } } if ( state -> inode == dentry -> d_inode ) { nfs_set_verifier ( dentry , nfs_save_change_attribute ( dir ) ) ; <S2SV_StartBug> nfs4_intent_set_file ( nd , & path , state ) ; <S2SV_EndBug> return 1 ; } <S2SV_StartBug> nfs4_close_sync ( & path , state , openflags ) ; <S2SV_EndBug> out_drop : d_drop ( dentry ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * state ; fmode_t fmode = openflags & ( FMODE_READ | FMODE_WRITE ) ; <S2SV_ModStart> , & path , fmode <S2SV_ModStart> path , state , fmode <S2SV_ModStart> , state , fmode <S2SV_ModEnd> ) ; out_drop\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int calc_iframe_target_size_one_pass_vbr ( const VP9_COMP * const cpi ) { static const int kf_ratio = 25 ; const RATE_CONTROL * rc = & cpi -> rc ; <S2SV_StartBug> int target = rc -> av_per_frame_bandwidth * kf_ratio ; <S2SV_EndBug> return vp9_rc_clamp_iframe_target_size ( cpi , target ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rc ; const <S2SV_ModStart> = rc -> avg_frame_bandwidth <S2SV_ModEnd> * kf_ratio ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18203\n\n```\nCWE-362 struct mapped_device * dm_get_from_kobject ( struct kobject * kobj ) { struct mapped_device * md ; md = container_of ( kobj , struct mapped_device , kobj_holder . kobj ) ; <S2SV_StartBug> if ( test_bit ( DMF_FREEING , & md -> flags ) || <S2SV_EndBug> <S2SV_StartBug> dm_deleting_md ( md ) ) <S2SV_EndBug> return NULL ; <S2SV_StartBug> dm_get ( md ) ; <S2SV_EndBug> return md ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> kobj ) ; spin_lock ( & _minor_lock ) ; <S2SV_ModStart> md ) ) { md = NULL ; goto out ; } <S2SV_ModEnd> dm_get ( md <S2SV_ModStart> dm_get ( md ) ; out : spin_unlock ( & _minor_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0541\n\n```\nCWE-119 static EAS_RESULT PushcdlStack ( EAS_U32 * pStack , EAS_INT * pStackPtr , EAS_U32 value ) { <S2SV_StartBug> if ( * pStackPtr >= CDL_STACK_SIZE ) <S2SV_EndBug> <S2SV_StartBug> return EAS_ERROR_FILE_FORMAT ; <S2SV_EndBug> * pStackPtr = * pStackPtr + 1 ; pStack [ * pStackPtr ] = value ; return EAS_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * pStackPtr >= ( CDL_STACK_SIZE - 1 ) ) { ALOGE ( \"b/34031018,<S2SV_blank>stackPtr(%d)\" , * pStackPtr ) ; android_errorWriteLog ( 0x534e4554 , \"34031018\" ) ; <S2SV_ModEnd> return EAS_ERROR_FILE_FORMAT ; <S2SV_ModStart> return EAS_ERROR_FILE_FORMAT ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0217\n\n```\nCWE-399 static void xen_netbk_tx_submit ( struct xen_netbk * netbk ) { struct gnttab_copy * gop = netbk -> tx_copy_ops ; struct sk_buff * skb ; while ( ( skb = __skb_dequeue ( & netbk -> tx_queue ) ) != NULL ) { struct xen_netif_tx_request * txp ; struct xenvif * vif ; u16 pending_idx ; unsigned data_len ; pending_idx = * ( ( u16 * ) skb -> data ) ; vif = netbk -> pending_tx_info [ pending_idx ] . vif ; txp = & netbk -> pending_tx_info [ pending_idx ] . req ; if ( unlikely ( xen_netbk_tx_check_gop ( netbk , skb , & gop ) ) ) { netdev_dbg ( vif -> dev , \"netback<S2SV_blank>grant<S2SV_blank>failed.\\\\n\" ) ; skb_shinfo ( skb ) -> nr_frags = 0 ; kfree_skb ( skb ) ; continue ; } data_len = skb -> len ; memcpy ( skb -> data , ( void * ) ( idx_to_kaddr ( netbk , pending_idx ) | txp -> offset ) , data_len ) ; if ( data_len < txp -> size ) { txp -> offset += data_len ; txp -> size -= data_len ; } else { <S2SV_StartBug> xen_netbk_idx_release ( netbk , pending_idx ) ; <S2SV_EndBug> } if ( txp -> flags & XEN_NETTXF_csum_blank ) skb -> ip_summed = CHECKSUM_PARTIAL ; else if ( txp -> flags & XEN_NETTXF_data_validated ) skb -> ip_summed = CHECKSUM_UNNECESSARY ; xen_netbk_fill_frags ( netbk , skb ) ; if ( skb_headlen ( skb ) < PKT_PROT_LEN && skb_is_nonlinear ( skb ) ) { int target = min_t ( int , skb -> len , PKT_PROT_LEN ) ; __pskb_pull_tail ( skb , target - skb_headlen ( skb ) ) ; } skb -> dev = vif -> dev ; skb -> protocol = eth_type_trans ( skb , skb -> dev ) ; if ( checksum_setup ( vif , skb ) ) { netdev_dbg ( vif -> dev , \"Can\\'t<S2SV_blank>setup<S2SV_blank>checksum<S2SV_blank>in<S2SV_blank>net_tx_action\\\\n\" ) ; kfree_skb ( skb ) ; continue ; } vif -> dev -> stats . rx_bytes += skb -> len ; vif -> dev -> stats . rx_packets ++ ; xenvif_receive_skb ( vif , skb ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> netbk , pending_idx , XEN_NETIF_RSP_OKAY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-787 int mp_pack ( lua_State * L ) { int nargs = lua_gettop ( L ) ; int i ; mp_buf * buf ; if ( nargs == 0 ) <S2SV_StartBug> return luaL_argerror ( L , 0 , \"MessagePack<S2SV_blank>pack<S2SV_blank>needs<S2SV_blank>input.\" ) ; <S2SV_EndBug> buf = mp_buf_new ( L ) ; for ( i = 1 ; i <= nargs ; i ++ ) { lua_pushvalue ( L , i ) ; mp_encode_lua_type ( L , buf , 0 ) ; lua_pushlstring ( L , ( char * ) buf -> b , buf -> len ) ; buf -> free += buf -> len ; buf -> len = 0 ; } mp_buf_free ( L , buf ) ; lua_concat ( L , nargs ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 , \"MessagePack<S2SV_blank>pack<S2SV_blank>needs<S2SV_blank>input.\" ) ; if ( ! lua_checkstack ( L , nargs ) ) return luaL_argerror ( L , 0 , \"Too<S2SV_blank>many<S2SV_blank>arguments<S2SV_blank>for<S2SV_blank>MessagePack<S2SV_blank>pack.\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9004\n\n```\nCWE-264 SYSCALL_DEFINE5 ( perf_event_open , struct perf_event_attr __user * , attr_uptr , pid_t , pid , int , cpu , int , group_fd , unsigned long , flags ) { struct perf_event * group_leader = NULL , * output_event = NULL ; struct perf_event * event , * sibling ; struct perf_event_attr attr ; struct perf_event_context * ctx ; struct file * event_file = NULL ; struct fd group = { NULL , 0 } ; struct task_struct * task = NULL ; struct pmu * pmu ; int event_fd ; int move_group = 0 ; int err ; int f_flags = O_RDWR ; if ( flags & ~ PERF_FLAG_ALL ) return - EINVAL ; err = perf_copy_attr ( attr_uptr , & attr ) ; if ( err ) return err ; if ( ! attr . exclude_kernel ) { if ( perf_paranoid_kernel ( ) && ! capable ( CAP_SYS_ADMIN ) ) return - EACCES ; } if ( attr . freq ) { if ( attr . sample_freq > sysctl_perf_event_sample_rate ) return - EINVAL ; } else { if ( attr . sample_period & ( 1ULL << 63 ) ) return - EINVAL ; } if ( ( flags & PERF_FLAG_PID_CGROUP ) && ( pid == - 1 || cpu == - 1 ) ) return - EINVAL ; if ( flags & PERF_FLAG_FD_CLOEXEC ) f_flags |= O_CLOEXEC ; event_fd = get_unused_fd_flags ( f_flags ) ; if ( event_fd < 0 ) return event_fd ; if ( group_fd != - 1 ) { err = perf_fget_light ( group_fd , & group ) ; if ( err ) goto err_fd ; group_leader = group . file -> private_data ; if ( flags & PERF_FLAG_FD_OUTPUT ) output_event = group_leader ; if ( flags & PERF_FLAG_FD_NO_GROUP ) group_leader = NULL ; } if ( pid != - 1 && ! ( flags & PERF_FLAG_PID_CGROUP ) ) { task = find_lively_task_by_vpid ( pid ) ; if ( IS_ERR ( task ) ) { err = PTR_ERR ( task ) ; goto err_group_fd ; } } if ( task && group_leader && group_leader -> attr . inherit != attr . inherit ) { err = - EINVAL ; goto err_task ; } get_online_cpus ( ) ; event = perf_event_alloc ( & attr , cpu , task , group_leader , NULL , NULL , NULL ) ; if ( IS_ERR ( event ) ) { err = PTR_ERR ( event ) ; goto err_cpus ; } if ( flags & PERF_FLAG_PID_CGROUP ) { err = perf_cgroup_connect ( pid , event , & attr , group_leader ) ; if ( err ) { __free_event ( event ) ; goto err_cpus ; } } if ( is_sampling_event ( event ) ) { if ( event -> pmu -> capabilities & PERF_PMU_CAP_NO_INTERRUPT ) { err = - ENOTSUPP ; goto err_alloc ; } } account_event ( event ) ; pmu = event -> pmu ; if ( group_leader && ( is_software_event ( event ) != is_software_event ( group_leader ) ) ) { if ( is_software_event ( event ) ) { pmu = group_leader -> pmu ; } else if ( is_software_event ( group_leader ) && ( group_leader -> group_flags & PERF_GROUP_SOFTWARE ) ) { move_group = 1 ; } } ctx = find_get_context ( pmu , task , event -> cpu ) ; if ( IS_ERR ( ctx ) ) { err = PTR_ERR ( ctx ) ; goto err_alloc ; } if ( task ) { put_task_struct ( task ) ; task = NULL ; } if ( group_leader ) { err = - EINVAL ; if ( group_leader -> group_leader != group_leader ) goto err_context ; if ( move_group ) { <S2SV_StartBug> if ( group_leader -> ctx -> type != ctx -> type ) <S2SV_EndBug> goto err_context ; } else { if ( group_leader -> ctx != ctx ) goto err_context ; } if ( attr . exclusive || attr . pinned ) goto err_context ; } if ( output_event ) { err = perf_event_set_output ( event , output_event ) ; if ( err ) goto err_context ; } event_file = anon_inode_getfile ( \"[perf_event]\" , & perf_fops , event , f_flags ) ; if ( IS_ERR ( event_file ) ) { err = PTR_ERR ( event_file ) ; goto err_context ; } if ( move_group ) { struct perf_event_context * gctx = group_leader -> ctx ; mutex_lock ( & gctx -> mutex ) ; perf_remove_from_context ( group_leader , false ) ; perf_event__state_init ( group_leader ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_remove_from_context ( sibling , false ) ; perf_event__state_init ( sibling ) ; put_ctx ( gctx ) ; } mutex_unlock ( & gctx -> mutex ) ; put_ctx ( gctx ) ; } WARN_ON_ONCE ( ctx -> parent_ctx ) ; mutex_lock ( & ctx -> mutex ) ; if ( move_group ) { synchronize_rcu ( ) ; perf_install_in_context ( ctx , group_leader , group_leader -> cpu ) ; get_ctx ( ctx ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_install_in_context ( ctx , sibling , sibling -> cpu ) ; get_ctx ( ctx ) ; } } perf_install_in_context ( ctx , event , event -> cpu ) ; perf_unpin_context ( ctx ) ; mutex_unlock ( & ctx -> mutex ) ; put_online_cpus ( ) ; event -> owner = current ; mutex_lock ( & current -> perf_event_mutex ) ; list_add_tail ( & event -> owner_entry , & current -> perf_event_list ) ; mutex_unlock ( & current -> perf_event_mutex ) ; perf_event__header_size ( event ) ; perf_event__id_header_size ( event ) ; fdput ( group ) ; fd_install ( event_fd , event_file ) ; return event_fd ; err_context : perf_unpin_context ( ctx ) ; put_ctx ( ctx ) ; err_alloc : free_event ( event ) ; err_cpus : put_online_cpus ( ) ; err_task : if ( task ) put_task_struct ( task ) ; err_group_fd : fdput ( group ) ; err_fd : put_unused_fd ( event_fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ctx -> task <S2SV_ModEnd> != ctx -> <S2SV_ModStart> != ctx -> task ) goto err_context ; if ( group_leader -> cpu != event -> cpu <S2SV_ModEnd> ) goto err_context\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5375\n\n```\nCWE-310 static noinline int btrfs_mksubvol ( struct path * parent , char * name , int namelen , struct btrfs_root * snap_src , u64 * async_transid , bool readonly , struct btrfs_qgroup_inherit * * inherit ) { struct inode * dir = parent -> dentry -> d_inode ; struct dentry * dentry ; int error ; mutex_lock_nested ( & dir -> i_mutex , I_MUTEX_PARENT ) ; dentry = lookup_one_len ( name , parent -> dentry , namelen ) ; error = PTR_ERR ( dentry ) ; if ( IS_ERR ( dentry ) ) goto out_unlock ; error = - EEXIST ; if ( dentry -> d_inode ) goto out_dput ; error = btrfs_may_create ( dir , dentry ) ; if ( error ) goto out_dput ; <S2SV_StartBug> down_read ( & BTRFS_I ( dir ) -> root -> fs_info -> subvol_sem ) ; <S2SV_EndBug> if ( btrfs_root_refs ( & BTRFS_I ( dir ) -> root -> root_item ) == 0 ) goto out_up_read ; if ( snap_src ) { error = create_snapshot ( snap_src , dentry , name , namelen , async_transid , readonly , inherit ) ; } else { error = create_subvol ( BTRFS_I ( dir ) -> root , dentry , name , namelen , async_transid , inherit ) ; } if ( ! error ) fsnotify_mkdir ( dir , dentry ) ; out_up_read : up_read ( & BTRFS_I ( dir ) -> root -> fs_info -> subvol_sem ) ; out_dput : dput ( dentry ) ; out_unlock : mutex_unlock ( & dir -> i_mutex ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out_dput ; error = btrfs_check_dir_item_collision ( BTRFS_I ( dir ) -> root , dir -> i_ino , name , namelen ) ; if ( error ) goto out_dput ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int process_line ( URLContext * h , char * line , int line_count , int * new_location ) { HTTPContext * s = h -> priv_data ; const char * auto_method = h -> flags & AVIO_FLAG_READ ? \"POST\" : \"GET\" ; char * tag , * p , * end , * method , * resource , * version ; int ret ; if ( line [ 0 ] == '\\\\0' ) { s -> end_header = 1 ; return 0 ; } p = line ; if ( line_count == 0 ) { if ( s -> is_connected_server ) { method = p ; while ( * p && ! av_isspace ( * p ) ) p ++ ; * ( p ++ ) = '\\\\0' ; av_log ( h , AV_LOG_TRACE , \"Received<S2SV_blank>method:<S2SV_blank>%s\\\\n\" , method ) ; if ( s -> method ) { if ( av_strcasecmp ( s -> method , method ) ) { av_log ( h , AV_LOG_ERROR , \"Received<S2SV_blank>and<S2SV_blank>expected<S2SV_blank>HTTP<S2SV_blank>method<S2SV_blank>do<S2SV_blank>not<S2SV_blank>match.<S2SV_blank>(%s<S2SV_blank>expected,<S2SV_blank>%s<S2SV_blank>received)\\\\n\" , s -> method , method ) ; return ff_http_averror ( 400 , AVERROR ( EIO ) ) ; } } else { av_log ( h , AV_LOG_TRACE , \"Autodetected<S2SV_blank>%s<S2SV_blank>HTTP<S2SV_blank>method\\\\n\" , auto_method ) ; if ( av_strcasecmp ( auto_method , method ) ) { av_log ( h , AV_LOG_ERROR , \"Received<S2SV_blank>and<S2SV_blank>autodetected<S2SV_blank>HTTP<S2SV_blank>method<S2SV_blank>did<S2SV_blank>not<S2SV_blank>match<S2SV_blank>\" \"(%s<S2SV_blank>autodetected<S2SV_blank>%s<S2SV_blank>received)\\\\n\" , auto_method , method ) ; return ff_http_averror ( 400 , AVERROR ( EIO ) ) ; } if ( ! ( s -> method = av_strdup ( method ) ) ) return AVERROR ( ENOMEM ) ; } while ( av_isspace ( * p ) ) p ++ ; resource = p ; while ( ! av_isspace ( * p ) ) p ++ ; * ( p ++ ) = '\\\\0' ; av_log ( h , AV_LOG_TRACE , \"Requested<S2SV_blank>resource:<S2SV_blank>%s\\\\n\" , resource ) ; if ( ! ( s -> resource = av_strdup ( resource ) ) ) return AVERROR ( ENOMEM ) ; while ( av_isspace ( * p ) ) p ++ ; version = p ; while ( * p && ! av_isspace ( * p ) ) p ++ ; * p = '\\\\0' ; if ( av_strncasecmp ( version , \"HTTP/\" , 5 ) ) { av_log ( h , AV_LOG_ERROR , \"Malformed<S2SV_blank>HTTP<S2SV_blank>version<S2SV_blank>string.\\\\n\" ) ; return ff_http_averror ( 400 , AVERROR ( EIO ) ) ; } av_log ( h , AV_LOG_TRACE , \"HTTP<S2SV_blank>version<S2SV_blank>string:<S2SV_blank>%s\\\\n\" , version ) ; } else { while ( ! av_isspace ( * p ) && * p != '\\\\0' ) p ++ ; while ( av_isspace ( * p ) ) p ++ ; s -> http_code = strtol ( p , & end , 10 ) ; av_log ( h , AV_LOG_TRACE , \"http_code=%d\\\\n\" , s -> http_code ) ; if ( ( ret = check_http_code ( h , s -> http_code , end ) ) < 0 ) return ret ; } } else { while ( * p != '\\\\0' && * p != ':' ) p ++ ; if ( * p != ':' ) return 1 ; * p = '\\\\0' ; tag = line ; p ++ ; while ( av_isspace ( * p ) ) p ++ ; if ( ! av_strcasecmp ( tag , \"Location\" ) ) { if ( ( ret = parse_location ( s , p ) ) < 0 ) return ret ; * new_location = 1 ; <S2SV_StartBug> } else if ( ! av_strcasecmp ( tag , \"Content-Length\" ) && s -> filesize == - 1 ) { <S2SV_EndBug> <S2SV_StartBug> s -> filesize = strtoll ( p , NULL , 10 ) ; <S2SV_EndBug> } else if ( ! av_strcasecmp ( tag , \"Content-Range\" ) ) { parse_content_range ( h , p ) ; } else if ( ! av_strcasecmp ( tag , \"Accept-Ranges\" ) && ! strncmp ( p , \"bytes\" , 5 ) && s -> seekable == - 1 ) { h -> is_streamed = 0 ; } else if ( ! av_strcasecmp ( tag , \"Transfer-Encoding\" ) && ! av_strncasecmp ( p , \"chunked\" , 7 ) ) { <S2SV_StartBug> s -> filesize = - 1 ; <S2SV_EndBug> s -> chunksize = 0 ; } else if ( ! av_strcasecmp ( tag , \"WWW-Authenticate\" ) ) { <S2SV_StartBug> ff_http_auth_handle_header ( & s -> auth_state , tag , p ) ; <S2SV_EndBug> } else if ( ! av_strcasecmp ( tag , \"Authentication-Info\" ) ) { ff_http_auth_handle_header ( & s -> auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Proxy-Authenticate\" ) ) { ff_http_auth_handle_header ( & s -> proxy_auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Connection\" ) ) { if ( ! strcmp ( p , \"close\" ) ) s -> willclose = 1 ; } else if ( ! av_strcasecmp ( tag , \"Server\" ) ) { if ( ! av_strcasecmp ( p , \"AkamaiGHost\" ) ) { s -> is_akamai = 1 ; } else if ( ! av_strncasecmp ( p , \"MediaGateway\" , 12 ) ) { s -> is_mediagateway = 1 ; } } else if ( ! av_strcasecmp ( tag , \"Content-Type\" ) ) { av_free ( s -> mime_type ) ; s -> mime_type = av_strdup ( p ) ; } else if ( ! av_strcasecmp ( tag , \"Set-Cookie\" ) ) { if ( parse_cookie ( s , p , & s -> cookie_dict ) ) av_log ( h , AV_LOG_WARNING , \"Unable<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>\\'%s\\'\\\\n\" , p ) ; } else if ( ! av_strcasecmp ( tag , \"Icy-MetaInt\" ) ) { <S2SV_StartBug> s -> icy_metaint = strtoll ( p , NULL , 10 ) ; <S2SV_EndBug> } else if ( ! av_strncasecmp ( tag , \"Icy-\" , 4 ) ) { if ( ( ret = parse_icy ( s , tag , p ) ) < 0 ) return ret ; } else if ( ! av_strcasecmp ( tag , \"Content-Encoding\" ) ) { if ( ( ret = parse_content_encoding ( h , p ) ) < 0 ) return ret ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> filesize == UINT64_MAX <S2SV_ModEnd> ) { s <S2SV_ModStart> -> filesize = strtoull <S2SV_ModEnd> ( p , <S2SV_ModStart> -> filesize = UINT64_MAX ; s -> chunksize = 0 ; } else if ( ! av_strcasecmp ( tag , \"WWW-Authenticate\" ) ) { ff_http_auth_handle_header ( & s -> auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Authentication-Info\" ) ) { ff_http_auth_handle_header ( & s -> auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Proxy-Authenticate\" ) ) { ff_http_auth_handle_header ( & s -> proxy_auth_state , tag , p ) ; } else if ( ! av_strcasecmp ( tag , \"Connection\" ) ) { if ( ! strcmp ( p , \"close\" ) ) s -> willclose = 1 ; } else if ( ! av_strcasecmp ( tag , \"Server\" ) ) { if ( ! av_strcasecmp ( p , \"AkamaiGHost\" ) ) { s -> is_akamai = 1 ; } else if ( ! av_strncasecmp ( p , \"MediaGateway\" , 12 ) ) { s -> is_mediagateway = 1 ; } } else if ( ! av_strcasecmp ( tag , \"Content-Type\" ) ) { av_free ( s -> mime_type ) ; s -> mime_type = av_strdup ( p ) ; } else if ( ! av_strcasecmp ( tag , \"Set-Cookie\" ) ) { if ( parse_cookie ( s , p , <S2SV_ModEnd> & s -> <S2SV_ModStart> & s -> <S2SV_ModEnd> cookie_dict ) ) <S2SV_ModStart> -> icy_metaint = strtoull <S2SV_ModEnd> ( p ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14954\n\n```\nCWE-74 int nntp_open_connection ( struct NntpAccountData * adata ) { struct Connection * conn = adata -> conn ; char buf [ 256 ] ; int cap ; bool posting = false , auth = true ; if ( adata -> status == NNTP_OK ) return 0 ; if ( adata -> status == NNTP_BYE ) return - 1 ; adata -> status = NNTP_NONE ; if ( mutt_socket_open ( conn ) < 0 ) return - 1 ; if ( mutt_socket_readln ( buf , sizeof ( buf ) , conn ) < 0 ) return nntp_connect_error ( adata ) ; if ( mutt_str_startswith ( buf , \"200\" , CASE_MATCH ) ) posting = true ; else if ( ! mutt_str_startswith ( buf , \"201\" , CASE_MATCH ) ) { mutt_socket_close ( conn ) ; mutt_str_remove_trailing_ws ( buf ) ; mutt_error ( \"%s\" , buf ) ; return - 1 ; } cap = nntp_capabilities ( adata ) ; if ( cap < 0 ) return - 1 ; if ( cap > 0 ) { if ( ( mutt_socket_send ( conn , \"MODE<S2SV_blank>READER\\\\r\\\\n\" ) < 0 ) || ( mutt_socket_readln ( buf , sizeof ( buf ) , conn ) < 0 ) ) { return nntp_connect_error ( adata ) ; } if ( mutt_str_startswith ( buf , \"200\" , CASE_MATCH ) ) posting = true ; else if ( mutt_str_startswith ( buf , \"201\" , CASE_MATCH ) ) posting = false ; else if ( adata -> hasCAPABILITIES ) { mutt_socket_close ( conn ) ; mutt_error ( _ ( \"Could<S2SV_blank>not<S2SV_blank>switch<S2SV_blank>to<S2SV_blank>reader<S2SV_blank>mode\" ) ) ; return - 1 ; } if ( adata -> hasCAPABILITIES ) { cap = nntp_capabilities ( adata ) ; if ( cap < 0 ) return - 1 ; } } mutt_message ( _ ( \"Connected<S2SV_blank>to<S2SV_blank>%s.<S2SV_blank>%s\" ) , conn -> account . host , posting ? _ ( \"Posting<S2SV_blank>is<S2SV_blank>ok\" ) : _ ( \"Posting<S2SV_blank>is<S2SV_blank>NOT<S2SV_blank>ok\" ) ) ; mutt_sleep ( 1 ) ; # ifdef USE_SSL if ( ( adata -> use_tls != 1 ) && ( adata -> hasSTARTTLS || C_SslForceTls ) ) { if ( adata -> use_tls == 0 ) { adata -> use_tls = C_SslForceTls || query_quadoption ( C_SslStarttls , _ ( \"Secure<S2SV_blank>connection<S2SV_blank>with<S2SV_blank>TLS?\" ) ) == MUTT_YES ? 2 : 1 ; } if ( adata -> use_tls == 2 ) { if ( ( mutt_socket_send ( conn , \"STARTTLS\\\\r\\\\n\" ) < 0 ) || ( mutt_socket_readln ( buf , sizeof ( buf ) , conn ) < 0 ) ) { return nntp_connect_error ( adata ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( ! mutt_str_startswith ( buf , \"382\" , CASE_MATCH ) ) { adata -> use_tls = 0 ; mutt_error ( \"STARTTLS:<S2SV_blank>%s\" , buf ) ; } else if ( mutt_ssl_starttls ( conn ) ) { adata -> use_tls = 0 ; adata -> status = NNTP_NONE ; mutt_socket_close ( adata -> conn ) ; mutt_error ( _ ( \"Could<S2SV_blank>not<S2SV_blank>negotiate<S2SV_blank>TLS<S2SV_blank>connection\" ) ) ; return - 1 ; } else { cap = nntp_capabilities ( adata ) ; if ( cap < 0 ) return - 1 ; } } } # endif if ( conn -> account . flags & MUTT_ACCT_USER ) { if ( ! conn -> account . user [ 0 ] ) auth = false ; } else { if ( ( mutt_socket_send ( conn , \"STAT\\\\r\\\\n\" ) < 0 ) || ( mutt_socket_readln ( buf , sizeof ( buf ) , conn ) < 0 ) ) { return nntp_connect_error ( adata ) ; } if ( ! mutt_str_startswith ( buf , \"480\" , CASE_MATCH ) ) auth = false ; } if ( auth && ( nntp_auth ( adata ) < 0 ) ) return - 1 ; if ( adata -> hasCAPABILITIES && ( auth || ( cap > 0 ) ) ) { cap = nntp_capabilities ( adata ) ; if ( cap < 0 ) return - 1 ; if ( cap > 0 ) { mutt_socket_close ( conn ) ; mutt_error ( _ ( \"Could<S2SV_blank>not<S2SV_blank>switch<S2SV_blank>to<S2SV_blank>reader<S2SV_blank>mode\" ) ) ; return - 1 ; } } if ( nntp_attempt_features ( adata ) < 0 ) return - 1 ; adata -> status = NNTP_OK ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } mutt_socket_empty ( conn ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static unsigned int get_sby_perpixel_diff_variance ( VP9_COMP * cpi , <S2SV_StartBug> MACROBLOCK * x , <S2SV_EndBug> int mi_row , int mi_col , BLOCK_SIZE bs ) { <S2SV_StartBug> const YV12_BUFFER_CONFIG * yv12 = get_ref_frame_buffer ( cpi , LAST_FRAME ) ; <S2SV_EndBug> <S2SV_StartBug> int offset = ( mi_row * MI_SIZE ) * yv12 -> y_stride + ( mi_col * MI_SIZE ) ; <S2SV_EndBug> unsigned int var , sse ; <S2SV_StartBug> var = cpi -> fn_ptr [ bs ] . vf ( x -> plane [ 0 ] . src . buf , <S2SV_EndBug> x -> plane [ 0 ] . src . stride , yv12 -> y_buffer + offset , yv12 -> y_stride , & sse ) ; return ROUND_POWER_OF_TWO ( var , num_pels_log2_lookup [ bs ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , const struct buf_2d * ref <S2SV_ModEnd> , int mi_row <S2SV_ModStart> bs ) { unsigned int sse , var ; uint8_t * last_y ; <S2SV_ModStart> const YV12_BUFFER_CONFIG * last <S2SV_ModEnd> = get_ref_frame_buffer ( <S2SV_ModStart> LAST_FRAME ) ; assert ( last != NULL ) ; last_y = & last -> y_buffer [ <S2SV_ModEnd> mi_row * MI_SIZE <S2SV_ModStart> mi_row * MI_SIZE * last <S2SV_ModEnd> -> y_stride + <S2SV_ModStart> -> y_stride + <S2SV_ModEnd> mi_col * MI_SIZE <S2SV_ModStart> mi_col * MI_SIZE ] <S2SV_ModEnd> ; var = <S2SV_ModStart> . vf ( ref -> buf , ref -> stride , last_y , last <S2SV_ModEnd> -> y_stride ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6308\n\n```\nCWE-190 void * <S2SV_StartBug> checked_xmalloc ( size_t size ) <S2SV_EndBug> { <S2SV_StartBug> alloc_limit_assert ( \"checked_xmalloc\" , size ) ; <S2SV_EndBug> <S2SV_StartBug> return xmalloc ( size ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> checked_xmalloc ( size_t num , size_t <S2SV_ModStart> size ) { size_t res ; if ( check_mul_overflow ( num , size , & res ) ) abort ( ) ; <S2SV_ModStart> ( \"checked_xmalloc\" , res <S2SV_ModEnd> ) ; return <S2SV_ModStart> return xmalloc ( num ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 int jas_stream_gobble ( jas_stream_t * stream , int n ) { <S2SV_StartBug> int m ; <S2SV_EndBug> m = n ; for ( m = n ; m > 0 ; -- m ) { if ( jas_stream_getc ( stream ) == EOF ) { return n - m ; } } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int m ; if ( n < 0 ) { jas_deprecated ( \"negative<S2SV_blank>count<S2SV_blank>for<S2SV_blank>jas_stream_gobble\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19927\n\n```\nCWE-125 static void ttm_put_pages ( struct page * * pages , unsigned npages , int flags , enum ttm_caching_state cstate ) { struct ttm_page_pool * pool = ttm_get_pool ( flags , false , cstate ) ; # ifdef CONFIG_TRANSPARENT_HUGEPAGE struct ttm_page_pool * huge = ttm_get_pool ( flags , true , cstate ) ; # endif unsigned long irq_flags ; unsigned i ; if ( pool == NULL ) { i = 0 ; while ( i < npages ) { # ifdef CONFIG_TRANSPARENT_HUGEPAGE struct page * p = pages [ i ] ; # endif unsigned order = 0 , j ; if ( ! pages [ i ] ) { ++ i ; continue ; } # ifdef CONFIG_TRANSPARENT_HUGEPAGE if ( ! ( flags & TTM_PAGE_FLAG_DMA32 ) && ( npages - i ) >= HPAGE_PMD_NR ) { for ( j = 1 ; j < HPAGE_PMD_NR ; ++ j ) <S2SV_StartBug> if ( p ++ != pages [ i + j ] ) <S2SV_EndBug> break ; if ( j == HPAGE_PMD_NR ) order = HPAGE_PMD_ORDER ; } # endif if ( page_count ( pages [ i ] ) != 1 ) pr_err ( \"Erroneous<S2SV_blank>page<S2SV_blank>count.<S2SV_blank>Leaking<S2SV_blank>pages.\\\\n\" ) ; __free_pages ( pages [ i ] , order ) ; j = 1 << order ; while ( j ) { pages [ i ++ ] = NULL ; -- j ; } } return ; } i = 0 ; # ifdef CONFIG_TRANSPARENT_HUGEPAGE if ( huge ) { unsigned max_size , n2free ; spin_lock_irqsave ( & huge -> lock , irq_flags ) ; while ( ( npages - i ) >= HPAGE_PMD_NR ) { struct page * p = pages [ i ] ; unsigned j ; if ( ! p ) break ; for ( j = 1 ; j < HPAGE_PMD_NR ; ++ j ) <S2SV_StartBug> if ( p ++ != pages [ i + j ] ) <S2SV_EndBug> break ; if ( j != HPAGE_PMD_NR ) break ; list_add_tail ( & pages [ i ] -> lru , & huge -> list ) ; for ( j = 0 ; j < HPAGE_PMD_NR ; ++ j ) pages [ i ++ ] = NULL ; huge -> npages ++ ; } max_size = _manager -> options . max_size ; max_size /= HPAGE_PMD_NR ; if ( huge -> npages > max_size ) n2free = huge -> npages - max_size ; else n2free = 0 ; spin_unlock_irqrestore ( & huge -> lock , irq_flags ) ; if ( n2free ) ttm_page_pool_free ( huge , n2free , false ) ; } # endif spin_lock_irqsave ( & pool -> lock , irq_flags ) ; while ( i < npages ) { if ( pages [ i ] ) { if ( page_count ( pages [ i ] ) != 1 ) pr_err ( \"Erroneous<S2SV_blank>page<S2SV_blank>count.<S2SV_blank>Leaking<S2SV_blank>pages.\\\\n\" ) ; list_add_tail ( & pages [ i ] -> lru , & pool -> list ) ; pages [ i ] = NULL ; pool -> npages ++ ; } ++ i ; } npages = 0 ; if ( pool -> npages > _manager -> options . max_size ) { npages = pool -> npages - _manager -> options . max_size ; if ( npages < NUM_PAGES_TO_ALLOC ) npages = NUM_PAGES_TO_ALLOC ; } spin_unlock_irqrestore ( & pool -> lock , irq_flags ) ; if ( npages ) ttm_page_pool_free ( pool , npages , false ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) if ( ++ p <S2SV_ModEnd> != pages [ <S2SV_ModStart> ) if ( ++ p <S2SV_ModEnd> != pages [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5232\n\n```\nCWE-362 hsm_com_errno_t hcom_client_init ( OUT p_hsm_com_client_hdl_t * p_hdl , IN char * server_path , IN char * client_path , IN int max_data_len ) { hsm_com_client_hdl_t * hdl = NULL ; hsm_com_errno_t res = HSM_COM_OK ; if ( ( strlen ( server_path ) > ( HSM_COM_SVR_MAX_PATH - 1 ) ) || ( strlen ( server_path ) == 0 ) ) { res = HSM_COM_PATH_ERR ; goto cleanup ; } if ( ( strlen ( client_path ) > ( HSM_COM_SVR_MAX_PATH - 1 ) ) || ( strlen ( client_path ) == 0 ) ) { res = HSM_COM_PATH_ERR ; goto cleanup ; } if ( ( hdl = calloc ( 1 , sizeof ( hsm_com_client_hdl_t ) ) ) == NULL ) { res = HSM_COM_NO_MEM ; goto cleanup ; } if ( ( hdl -> scr . scratch = malloc ( max_data_len ) ) == NULL ) { res = HSM_COM_NO_MEM ; goto cleanup ; } if ( ( hdl -> recv_buf = malloc ( max_data_len ) ) == NULL ) { res = HSM_COM_NO_MEM ; goto cleanup ; } if ( ( hdl -> send_buf = malloc ( max_data_len ) ) == NULL ) { res = HSM_COM_NO_MEM ; goto cleanup ; } hdl -> scr . scratch_fill = 0 ; hdl -> scr . scratch_len = max_data_len ; hdl -> buf_len = max_data_len ; hdl -> trans_id = 1 ; strcpy ( hdl -> s_path , server_path ) ; strcpy ( hdl -> c_path , client_path ) ; <S2SV_StartBug> hdl -> client_state = HSM_COM_C_STATE_IN ; <S2SV_EndBug> * p_hdl = hdl ; return res ; cleanup : if ( hdl ) { if ( hdl -> scr . scratch ) { free ( hdl -> scr . scratch ) ; } if ( hdl -> recv_buf ) { free ( hdl -> recv_buf ) ; } free ( hdl ) ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> client_path ) ; if ( mkstemp ( hdl -> c_path ) == - 1 ) { res = HSM_COM_PATH_ERR ; goto cleanup ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int PredictorEncodeRow ( TIFF * tif , uint8 * bp , tmsize_t cc , uint16 s ) { TIFFPredictorState * sp = PredictorState ( tif ) ; assert ( sp != NULL ) ; assert ( sp -> encodepfunc != NULL ) ; assert ( sp -> encoderow != NULL ) ; <S2SV_StartBug> ( * sp -> encodepfunc ) ( tif , bp , cc ) ; <S2SV_EndBug> return ( * sp -> encoderow ) ( tif , bp , cc , s ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; if ( ! <S2SV_ModStart> , cc ) ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6376\n\n```\nCWE-189 static void recalculate_apic_map ( struct kvm * kvm ) { struct kvm_apic_map * new , * old = NULL ; struct kvm_vcpu * vcpu ; int i ; new = kzalloc ( sizeof ( struct kvm_apic_map ) , GFP_KERNEL ) ; mutex_lock ( & kvm -> arch . apic_map_lock ) ; if ( ! new ) goto out ; new -> ldr_bits = 8 ; new -> cid_shift = 8 ; new -> cid_mask = 0 ; new -> lid_mask = 0xff ; kvm_for_each_vcpu ( i , vcpu , kvm ) { struct kvm_lapic * apic = vcpu -> arch . apic ; u16 cid , lid ; u32 ldr ; if ( ! kvm_apic_present ( vcpu ) ) continue ; if ( apic_x2apic_mode ( apic ) ) { new -> ldr_bits = 32 ; new -> cid_shift = 16 ; <S2SV_StartBug> new -> cid_mask = new -> lid_mask = 0xffff ; <S2SV_EndBug> } else if ( kvm_apic_sw_enabled ( apic ) && ! new -> cid_mask && kvm_apic_get_reg ( apic , APIC_DFR ) == APIC_DFR_CLUSTER ) { new -> cid_shift = 4 ; new -> cid_mask = 0xf ; new -> lid_mask = 0xf ; } new -> phys_map [ kvm_apic_id ( apic ) ] = apic ; ldr = kvm_apic_get_reg ( apic , APIC_LDR ) ; cid = apic_cluster_id ( new , ldr ) ; lid = apic_logical_id ( new , ldr ) ; if ( lid ) new -> logical_map [ cid ] [ ffs ( lid ) - 1 ] = apic ; } out : old = rcu_dereference_protected ( kvm -> arch . apic_map , lockdep_is_held ( & kvm -> arch . apic_map_lock ) ) ; rcu_assign_pointer ( kvm -> arch . apic_map , new ) ; mutex_unlock ( & kvm -> arch . apic_map_lock ) ; if ( old ) kfree_rcu ( old , rcu ) ; kvm_vcpu_request_scan_ioapic ( kvm ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> cid_mask = ( 1 << KVM_X2APIC_CID_BITS ) - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3156\n\n```\nCWE-399 static void __inet_del_ifa ( struct in_device * in_dev , struct in_ifaddr * * ifap , int destroy , struct nlmsghdr * nlh , u32 portid ) { struct in_ifaddr * promote = NULL ; struct in_ifaddr * ifa , * ifa1 = * ifap ; struct in_ifaddr * last_prim = in_dev -> ifa_list ; struct in_ifaddr * prev_prom = NULL ; int do_promote = IN_DEV_PROMOTE_SECONDARIES ( in_dev ) ; ASSERT_RTNL ( ) ; <S2SV_StartBug> if ( ! ( ifa1 -> ifa_flags & IFA_F_SECONDARY ) ) { <S2SV_EndBug> struct in_ifaddr * * ifap1 = & ifa1 -> ifa_next ; while ( ( ifa = * ifap1 ) != NULL ) { if ( ! ( ifa -> ifa_flags & IFA_F_SECONDARY ) && ifa1 -> ifa_scope <= ifa -> ifa_scope ) last_prim = ifa ; if ( ! ( ifa -> ifa_flags & IFA_F_SECONDARY ) || ifa1 -> ifa_mask != ifa -> ifa_mask || ! inet_ifa_match ( ifa1 -> ifa_address , ifa ) ) { ifap1 = & ifa -> ifa_next ; prev_prom = ifa ; continue ; } if ( ! do_promote ) { inet_hash_remove ( ifa ) ; * ifap1 = ifa -> ifa_next ; rtmsg_ifa ( RTM_DELADDR , ifa , nlh , portid ) ; blocking_notifier_call_chain ( & inetaddr_chain , NETDEV_DOWN , ifa ) ; inet_free_ifa ( ifa ) ; } else { promote = ifa ; break ; } } } for ( ifa = promote ; ifa ; ifa = ifa -> ifa_next ) { if ( ifa1 -> ifa_mask == ifa -> ifa_mask && inet_ifa_match ( ifa1 -> ifa_address , ifa ) ) fib_del_ifaddr ( ifa , ifa1 ) ; <S2SV_StartBug> } <S2SV_EndBug> * ifap = ifa1 -> ifa_next ; inet_hash_remove ( ifa1 ) ; rtmsg_ifa ( RTM_DELADDR , ifa1 , nlh , portid ) ; blocking_notifier_call_chain ( & inetaddr_chain , NETDEV_DOWN , ifa1 ) ; if ( promote ) { struct in_ifaddr * next_sec = promote -> ifa_next ; if ( prev_prom ) { prev_prom -> ifa_next = promote -> ifa_next ; promote -> ifa_next = last_prim -> ifa_next ; last_prim -> ifa_next = promote ; } promote -> ifa_flags &= ~ IFA_F_SECONDARY ; rtmsg_ifa ( RTM_NEWADDR , promote , nlh , portid ) ; blocking_notifier_call_chain ( & inetaddr_chain , NETDEV_UP , promote ) ; for ( ifa = next_sec ; ifa ; ifa = ifa -> ifa_next ) { if ( ifa1 -> ifa_mask != ifa -> ifa_mask || ! inet_ifa_match ( ifa1 -> ifa_address , ifa ) ) continue ; fib_add_ifaddr ( ifa ) ; } } if ( destroy ) inet_free_ifa ( ifa1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( in_dev -> dead ) goto no_promotions ; if ( <S2SV_ModStart> ) ; } no_promotions :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vpx_svc_release ( SvcContext * svc_ctx ) { <S2SV_StartBug> SvcInternal * si ; <S2SV_EndBug> if ( svc_ctx == NULL ) return ; <S2SV_StartBug> si = ( SvcInternal * ) svc_ctx -> internal ; <S2SV_EndBug> if ( si != NULL ) { <S2SV_StartBug> free ( si -> buffer ) ; <S2SV_EndBug> if ( si -> rc_stats_buf ) { free ( si -> rc_stats_buf ) ; } free ( si ) ; svc_ctx -> internal = NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svc_ctx ) { SvcInternal_t <S2SV_ModEnd> * si ; <S2SV_ModStart> si = ( SvcInternal_t <S2SV_ModEnd> * ) svc_ctx <S2SV_ModStart> free ( si <S2SV_ModEnd> ) ; svc_ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2850\n\n```\nCWE-119 static int iscsi_add_notunderstood_response ( char * key , char * value , struct iscsi_param_list * param_list ) { struct iscsi_extra_response * extra_response ; if ( strlen ( value ) > VALUE_MAXLEN ) { pr_err ( \"Value<S2SV_blank>for<S2SV_blank>notunderstood<S2SV_blank>key<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>exceeds<S2SV_blank>%d,\" \"<S2SV_blank>protocol<S2SV_blank>error.\\\\n\" , key , VALUE_MAXLEN ) ; return - 1 ; } extra_response = kzalloc ( sizeof ( struct iscsi_extra_response ) , GFP_KERNEL ) ; if ( ! extra_response ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for\" \"<S2SV_blank>struct<S2SV_blank>iscsi_extra_response.\\\\n\" ) ; return - 1 ; } INIT_LIST_HEAD ( & extra_response -> er_list ) ; <S2SV_StartBug> strncpy ( extra_response -> key , key , strlen ( key ) + 1 ) ; <S2SV_EndBug> strncpy ( extra_response -> value , NOTUNDERSTOOD , <S2SV_StartBug> strlen ( NOTUNDERSTOOD ) + 1 ) ; <S2SV_EndBug> list_add_tail ( & extra_response -> er_list , & param_list -> extra_response_list ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> er_list ) ; strlcpy <S2SV_ModEnd> ( extra_response -> <S2SV_ModStart> , key , sizeof ( extra_response -> key ) ) ; strlcpy <S2SV_ModEnd> ( extra_response -> <S2SV_ModStart> , NOTUNDERSTOOD , sizeof ( extra_response -> value ) <S2SV_ModEnd> ) ; list_add_tail\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void ArrowHead ( ) { int k ; double length ; SaveGraphicsState ; if ( flip ) length = - arrow . length ; else length = arrow . length ; SetDashSize ( 0 , 0 ) ; if ( arrow . stroke ) { SetLineWidth ( arrow . stroke ) ; for ( k = 1 ; k <= 2 ; k ++ ) { SaveGraphicsState ; MoveTo ( length * 0.5 , 0 ) ; LineTo ( - length * 0.5 , arrow . width ) ; LineTo ( - length * 0.5 + length * arrow . inset , 0 ) ; LineTo ( - length * 0.5 , - arrow . width ) ; if ( k == 1 ) { SetBackgroundColor ( NONSTROKING ) ; <S2SV_StartBug> outpos += sprintf ( outpos , \"<S2SV_blank>h<S2SV_blank>f\" ) ; <S2SV_EndBug> } else { <S2SV_StartBug> outpos += sprintf ( outpos , \"<S2SV_blank>s\" ) ; <S2SV_EndBug> } RestoreGraphicsState ; } } else { MoveTo ( length * 0.5 , 0 ) ; LineTo ( - length * 0.5 , arrow . width ) ; LineTo ( - length * 0.5 + length * arrow . inset , 0 ) ; LineTo ( - length * 0.5 , - arrow . width ) ; <S2SV_StartBug> outpos += sprintf ( outpos , \"<S2SV_blank>h<S2SV_blank>f\" ) ; <S2SV_EndBug> } RestoreGraphicsState ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NONSTROKING ) ; send ( <S2SV_ModEnd> \"<S2SV_blank>h<S2SV_blank>f\" ) ; <S2SV_ModStart> } else { send ( <S2SV_ModEnd> \"<S2SV_blank>s\" ) ; <S2SV_ModStart> width ) ; send ( <S2SV_ModEnd> \"<S2SV_blank>h<S2SV_blank>f\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 void WT_VoiceGain ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame ) { EAS_I32 * pMixBuffer ; EAS_PCM * pInputBuffer ; EAS_I32 gain ; EAS_I32 gainIncrement ; EAS_I32 tmp0 ; EAS_I32 tmp1 ; EAS_I32 tmp2 ; EAS_I32 numSamples ; # if ( NUM_OUTPUT_CHANNELS == 2 ) EAS_I32 gainLeft , gainRight ; # endif <S2SV_StartBug> numSamples = pWTIntFrame -> numSamples ; <S2SV_EndBug> pMixBuffer = pWTIntFrame -> pMixBuffer ; pInputBuffer = pWTIntFrame -> pAudioBuffer ; gainIncrement = ( pWTIntFrame -> frame . gainTarget - pWTIntFrame -> prevGain ) << ( 16 - SYNTH_UPDATE_PERIOD_IN_BITS ) ; if ( gainIncrement < 0 ) gainIncrement ++ ; gain = pWTIntFrame -> prevGain << 16 ; # if ( NUM_OUTPUT_CHANNELS == 2 ) gainLeft = pWTVoice -> gainLeft ; gainRight = pWTVoice -> gainRight ; # endif while ( numSamples -- ) { tmp0 = * pInputBuffer ++ ; gain += gainIncrement ; tmp2 = gain >> 16 ; tmp2 *= tmp0 ; # if ( NUM_OUTPUT_CHANNELS == 2 ) tmp2 = tmp2 >> 14 ; tmp1 = * pMixBuffer ; tmp0 = tmp2 * gainLeft ; tmp0 = tmp0 >> NUM_MIXER_GUARD_BITS ; tmp1 += tmp0 ; * pMixBuffer ++ = tmp1 ; tmp1 = * pMixBuffer ; tmp0 = tmp2 * gainRight ; tmp0 = tmp0 >> NUM_MIXER_GUARD_BITS ; tmp1 += tmp0 ; * pMixBuffer ++ = tmp1 ; # else tmp1 = * pMixBuffer ; tmp2 = tmp2 >> ( NUM_MIXER_GUARD_BITS - 1 ) ; tmp1 += tmp2 ; * pMixBuffer ++ = tmp1 ; # endif } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> numSamples ; if ( numSamples <= 0 ) { ALOGE ( \"b/26366256\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4027\n\n```\nCWE-200 static int rd_build_device_space ( struct rd_dev * rd_dev ) { <S2SV_StartBug> u32 i = 0 , j , page_offset = 0 , sg_per_table , sg_tables , total_sg_needed ; <S2SV_EndBug> u32 max_sg_per_table = ( RD_MAX_ALLOCATION_SIZE / sizeof ( struct scatterlist ) ) ; <S2SV_StartBug> struct rd_dev_sg_table * sg_table ; <S2SV_EndBug> struct page * pg ; struct scatterlist * sg ; if ( rd_dev -> rd_page_count <= 0 ) { pr_err ( \"Illegal<S2SV_blank>page<S2SV_blank>count:<S2SV_blank>%u<S2SV_blank>for<S2SV_blank>Ramdisk<S2SV_blank>device\\\\n\" , rd_dev -> rd_page_count ) ; return - EINVAL ; } if ( rd_dev -> rd_flags & RDF_NULLIO ) return 0 ; total_sg_needed = rd_dev -> rd_page_count ; sg_tables = ( total_sg_needed / max_sg_per_table ) + 1 ; sg_table = kzalloc ( sg_tables * sizeof ( struct rd_dev_sg_table ) , GFP_KERNEL ) ; if ( ! sg_table ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Ramdisk\" \"<S2SV_blank>scatterlist<S2SV_blank>tables\\\\n\" ) ; return - ENOMEM ; } rd_dev -> sg_table_array = sg_table ; rd_dev -> sg_table_count = sg_tables ; <S2SV_StartBug> while ( total_sg_needed ) { <S2SV_EndBug> sg_per_table = ( total_sg_needed > max_sg_per_table ) ? max_sg_per_table : total_sg_needed ; sg = kzalloc ( sg_per_table * sizeof ( struct scatterlist ) , GFP_KERNEL ) ; if ( ! sg ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>scatterlist<S2SV_blank>array\" \"<S2SV_blank>for<S2SV_blank>struct<S2SV_blank>rd_dev\\\\n\" ) ; return - ENOMEM ; } sg_init_table ( sg , sg_per_table ) ; sg_table [ i ] . sg_table = sg ; sg_table [ i ] . rd_sg_count = sg_per_table ; sg_table [ i ] . page_start_offset = page_offset ; sg_table [ i ++ ] . page_end_offset = ( page_offset + sg_per_table ) - 1 ; for ( j = 0 ; j < sg_per_table ; j ++ ) { pg = alloc_pages ( GFP_KERNEL , 0 ) ; if ( ! pg ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>scatterlist\" \"<S2SV_blank>pages<S2SV_blank>for<S2SV_blank>struct<S2SV_blank>rd_dev_sg_table\\\\n\" ) ; return - ENOMEM ; } sg_assign_page ( & sg [ j ] , pg ) ; sg [ j ] . length = PAGE_SIZE ; } page_offset += sg_per_table ; total_sg_needed -= sg_per_table ; } pr_debug ( \"CORE_RD[%u]<S2SV_blank>-<S2SV_blank>Built<S2SV_blank>Ramdisk<S2SV_blank>Device<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>space<S2SV_blank>of\" \"<S2SV_blank>%u<S2SV_blank>pages<S2SV_blank>in<S2SV_blank>%u<S2SV_blank>tables\\\\n\" , rd_dev -> rd_host -> rd_host_id , rd_dev -> rd_dev_id , rd_dev -> rd_page_count , rd_dev -> sg_table_count ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rd_dev ) { struct rd_dev_sg_table * sg_table ; u32 <S2SV_ModEnd> sg_tables , total_sg_needed <S2SV_ModStart> ) ) ; int rc <S2SV_ModEnd> ; if ( <S2SV_ModStart> = sg_tables ; rc = rd_allocate_sgl_table ( rd_dev , sg_table , total_sg_needed , 0x00 ) ; if ( rc ) return rc ; <S2SV_ModEnd> pr_debug ( \"CORE_RD[%u]<S2SV_blank>-<S2SV_blank>Built<S2SV_blank>Ramdisk<S2SV_blank>Device<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>space<S2SV_blank>of\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13134\n\n```\nCWE-401 static Image * ReadBMPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { BMPInfo bmp_info ; Image * image ; MagickBooleanType status ; MagickOffsetType offset , profile_data , profile_size , start_position ; MemoryInfo * pixel_info ; Quantum index ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bit , bytes_per_line , length ; ssize_t count , y ; unsigned char magick [ 12 ] , * pixels ; unsigned int blue , green , offset_bits , red ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( & bmp_info , 0 , sizeof ( bmp_info ) ) ; bmp_info . ba_offset = 0 ; start_position = 0 ; offset_bits = 0 ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { PixelInfo quantum_bits ; PixelPacket shift ; start_position = TellBlob ( image ) - 2 ; bmp_info . ba_offset = 0 ; while ( LocaleNCompare ( ( char * ) magick , \"BA\" , 2 ) == 0 ) { bmp_info . file_size = ReadBlobLSBLong ( image ) ; bmp_info . ba_offset = ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) break ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Magick:<S2SV_blank>%c%c\" , magick [ 0 ] , magick [ 1 ] ) ; if ( ( count != 2 ) || ( ( LocaleNCompare ( ( char * ) magick , \"BM\" , 2 ) != 0 ) && ( LocaleNCompare ( ( char * ) magick , \"CI\" , 2 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bmp_info . file_size = ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; bmp_info . size = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>BMP<S2SV_blank>size:<S2SV_blank>%u\" , bmp_info . size ) ; profile_data = 0 ; profile_size = 0 ; if ( bmp_info . size == 12 ) { ( void ) CopyMagickString ( image -> magick , \"BMP2\" , MagickPathExtent ) ; bmp_info . width = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . height = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . x_pixels = 0 ; bmp_info . y_pixels = 0 ; bmp_info . number_colors = 0 ; bmp_info . compression = BI_RGB ; bmp_info . image_size = 0 ; bmp_info . alpha_mask = 0 ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>OS/2<S2SV_blank>Bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; } } else { if ( bmp_info . size < 40 ) ThrowReaderException ( CorruptImageError , \"NonOS2HeaderSizeError\" ) ; bmp_info . width = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . height = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . compression = ReadBlobLSBLong ( image ) ; bmp_info . image_size = ReadBlobLSBLong ( image ) ; bmp_info . x_pixels = ReadBlobLSBLong ( image ) ; bmp_info . y_pixels = ReadBlobLSBLong ( image ) ; bmp_info . number_colors = ReadBlobLSBLong ( image ) ; if ( ( MagickSizeType ) bmp_info . number_colors > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; bmp_info . colors_important = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>MS<S2SV_blank>Windows<S2SV_blank>bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Bits<S2SV_blank>per<S2SV_blank>pixel:<S2SV_blank>%.20g\" , ( double ) bmp_info . bits_per_pixel ) ; switch ( bmp_info . compression ) { case BI_RGB : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RGB\" ) ; break ; } case BI_RLE4 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE4\" ) ; break ; } case BI_RLE8 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE8\" ) ; break ; } case BI_BITFIELDS : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_BITFIELDS\" ) ; break ; } case BI_PNG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_PNG\" ) ; break ; } case BI_JPEG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_JPEG\" ) ; break ; } default : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>UNKNOWN<S2SV_blank>(%u)\" , bmp_info . compression ) ; } } ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>colors:<S2SV_blank>%u\" , bmp_info . number_colors ) ; } bmp_info . red_mask = ReadBlobLSBLong ( image ) ; bmp_info . green_mask = ReadBlobLSBLong ( image ) ; bmp_info . blue_mask = ReadBlobLSBLong ( image ) ; if ( bmp_info . size > 40 ) { double gamma ; bmp_info . alpha_mask = ReadBlobLSBLong ( image ) ; bmp_info . colorspace = ReadBlobLSBSignedLong ( image ) ; # define BMP_DENOM ( ( double ) 0x40000000 ) bmp_info . red_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; gamma = bmp_info . red_primary . x + bmp_info . red_primary . y + bmp_info . red_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . red_primary . x *= gamma ; bmp_info . red_primary . y *= gamma ; image -> chromaticity . red_primary . x = bmp_info . red_primary . x ; image -> chromaticity . red_primary . y = bmp_info . red_primary . y ; gamma = bmp_info . green_primary . x + bmp_info . green_primary . y + bmp_info . green_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . green_primary . x *= gamma ; bmp_info . green_primary . y *= gamma ; image -> chromaticity . green_primary . x = bmp_info . green_primary . x ; image -> chromaticity . green_primary . y = bmp_info . green_primary . y ; gamma = bmp_info . blue_primary . x + bmp_info . blue_primary . y + bmp_info . blue_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . blue_primary . x *= gamma ; bmp_info . blue_primary . y *= gamma ; image -> chromaticity . blue_primary . x = bmp_info . blue_primary . x ; image -> chromaticity . blue_primary . y = bmp_info . blue_primary . y ; bmp_info . gamma_scale . x = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . y = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . z = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; image -> gamma = ( bmp_info . gamma_scale . x + bmp_info . gamma_scale . y + bmp_info . gamma_scale . z ) / 3.0 ; } else ( void ) CopyMagickString ( image -> magick , \"BMP3\" , MagickPathExtent ) ; if ( bmp_info . size > 108 ) { size_t intent ; intent = ReadBlobLSBLong ( image ) ; switch ( ( int ) intent ) { case LCS_GM_BUSINESS : { image -> rendering_intent = SaturationIntent ; break ; } case LCS_GM_GRAPHICS : { image -> rendering_intent = RelativeIntent ; break ; } case LCS_GM_IMAGES : { image -> rendering_intent = PerceptualIntent ; break ; } case LCS_GM_ABS_COLORIMETRIC : { image -> rendering_intent = AbsoluteIntent ; break ; } } profile_data = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; profile_size = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; } } if ( ( MagickSizeType ) bmp_info . file_size > GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; else if ( ( MagickSizeType ) bmp_info . file_size < GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageWarning , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; if ( bmp_info . width <= 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . height == 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . planes != 1 ) ThrowReaderException ( CorruptImageError , \"StaticPlanesValueNotEqualToOne\" ) ; if ( ( bmp_info . bits_per_pixel != 1 ) && ( bmp_info . bits_per_pixel != 4 ) && ( bmp_info . bits_per_pixel != 8 ) && ( bmp_info . bits_per_pixel != 16 ) && ( bmp_info . bits_per_pixel != 24 ) && ( bmp_info . bits_per_pixel != 32 ) ) ThrowReaderException ( CorruptImageError , \"UnsupportedBitsPerPixel\" ) ; if ( bmp_info . bits_per_pixel < 16 && bmp_info . number_colors > ( 1U << bmp_info . bits_per_pixel ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedNumberOfColors\" ) ; if ( ( bmp_info . compression == 1 ) && ( bmp_info . bits_per_pixel != 8 ) ) ThrowReaderException ( CorruptImageError , \"UnsupportedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 2 ) && ( bmp_info . bits_per_pixel != 4 ) ) ThrowReaderException ( CorruptImageError , \"UnsupportedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 3 ) && ( bmp_info . bits_per_pixel < 16 ) ) ThrowReaderException ( CorruptImageError , \"UnsupportedBitsPerPixel\" ) ; switch ( bmp_info . compression ) { case BI_RGB : image -> compression = NoCompression ; break ; case BI_RLE8 : case BI_RLE4 : image -> compression = RLECompression ; break ; case BI_BITFIELDS : break ; case BI_JPEG : ThrowReaderException ( CoderError , \"JPEGCompressNotSupported\" ) ; case BI_PNG : ThrowReaderException ( CoderError , \"PNGCompressNotSupported\" ) ; default : ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } image -> columns = ( size_t ) MagickAbsoluteValue ( bmp_info . width ) ; image -> rows = ( size_t ) MagickAbsoluteValue ( bmp_info . height ) ; image -> depth = bmp_info . bits_per_pixel <= 8 ? bmp_info . bits_per_pixel : 8 ; image -> alpha_trait = ( ( bmp_info . alpha_mask != 0 ) && ( bmp_info . compression == BI_BITFIELDS ) ) ? BlendPixelTrait : UndefinedPixelTrait ; if ( bmp_info . bits_per_pixel < 16 ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = bmp_info . number_colors ; one = 1 ; if ( image -> colors == 0 ) image -> colors = one << bmp_info . bits_per_pixel ; } image -> resolution . x = ( double ) bmp_info . x_pixels / 100.0 ; image -> resolution . y = ( double ) bmp_info . y_pixels / 100.0 ; image -> units = PixelsPerCentimeterResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> storage_class == PseudoClass ) { unsigned char * bmp_colormap ; size_t packet_size ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>colormap<S2SV_blank>of<S2SV_blank>%.20g<S2SV_blank>colors\" , ( double ) image -> colors ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bmp_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) image -> colors , 4 * sizeof ( * bmp_colormap ) ) ; if ( bmp_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bmp_info . size == 12 ) || ( bmp_info . size == 64 ) ) packet_size = 3 ; else packet_size = 4 ; offset = SeekBlob ( image , start_position + 14 + bmp_info . size , SEEK_SET ) ; if ( offset < 0 ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } count = ReadBlob ( image , packet_size * image -> colors , bmp_colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = bmp_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; if ( packet_size == 4 ) p ++ ; } bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; } if ( bmp_info . offset_bits == offset_bits ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; offset_bits = bmp_info . offset_bits ; offset = SeekBlob ( image , start_position + bmp_info . offset_bits , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( bmp_info . compression == BI_RLE4 ) bmp_info . bits_per_pixel <<= 1 ; bytes_per_line = 4 * ( ( image -> columns * bmp_info . bits_per_pixel + 31 ) / 32 ) ; length = ( size_t ) bytes_per_line * image -> rows ; if ( ( MagickSizeType ) ( length / 256 ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ( bmp_info . compression == BI_RGB ) || ( bmp_info . compression == BI_BITFIELDS ) ) { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>pixels<S2SV_blank>(%.20g<S2SV_blank>bytes)\" , ( double ) length ) ; count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } } else { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; status = DecodeImage ( image , bmp_info . compression , pixels , image -> columns * image -> rows ) ; if ( status == MagickFalse ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToRunlengthDecodeImage\" ) ; } } if ( bmp_info . compression == BI_RGB ) { if ( ( image -> alpha_trait == UndefinedPixelTrait ) && ( bmp_info . size == 40 ) && ( bmp_info . bits_per_pixel == 32 ) ) { bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( * ( p + 3 ) != 0 ) { image -> alpha_trait = BlendPixelTrait ; y = - 1 ; break ; } p += 4 ; } } } bmp_info . alpha_mask = image -> alpha_trait != UndefinedPixelTrait ? 0xff000000U : 0U ; bmp_info . red_mask = 0x00ff0000U ; bmp_info . green_mask = 0x0000ff00U ; bmp_info . blue_mask = 0x000000ffU ; if ( bmp_info . bits_per_pixel == 16 ) { bmp_info . red_mask = 0x00007c00U ; bmp_info . green_mask = 0x000003e0U ; bmp_info . blue_mask = 0x0000001fU ; } } ( void ) memset ( & shift , 0 , sizeof ( shift ) ) ; ( void ) memset ( & quantum_bits , 0 , sizeof ( quantum_bits ) ) ; if ( ( bmp_info . bits_per_pixel == 16 ) || ( bmp_info . bits_per_pixel == 32 ) ) { register unsigned int sample ; if ( bmp_info . red_mask != 0 ) while ( ( ( bmp_info . red_mask << shift . red ) & 0x80000000UL ) == 0 ) { shift . red ++ ; if ( shift . red >= 32U ) break ; } if ( bmp_info . green_mask != 0 ) while ( ( ( bmp_info . green_mask << shift . green ) & 0x80000000UL ) == 0 ) { shift . green ++ ; if ( shift . green >= 32U ) break ; } if ( bmp_info . blue_mask != 0 ) while ( ( ( bmp_info . blue_mask << shift . blue ) & 0x80000000UL ) == 0 ) { shift . blue ++ ; if ( shift . blue >= 32U ) break ; } if ( bmp_info . alpha_mask != 0 ) while ( ( ( bmp_info . alpha_mask << shift . alpha ) & 0x80000000UL ) == 0 ) { shift . alpha ++ ; if ( shift . alpha >= 32U ) break ; } sample = shift . red ; while ( ( ( bmp_info . red_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . red = ( MagickRealType ) ( sample - shift . red ) ; sample = shift . green ; while ( ( ( bmp_info . green_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . green = ( MagickRealType ) ( sample - shift . green ) ; sample = shift . blue ; while ( ( ( bmp_info . blue_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . blue = ( MagickRealType ) ( sample - shift . blue ) ; sample = shift . alpha ; while ( ( ( bmp_info . alpha_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . alpha = ( MagickRealType ) ( sample - shift . alpha ) ; } switch ( bmp_info . bits_per_pixel ) { case 1 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 4 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; ValidateColormapValue ( image , ( ssize_t ) ( * p & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0xf ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; x ++ ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 8 : { if ( ( bmp_info . compression == BI_RLE8 ) || ( bmp_info . compression == BI_RLE4 ) ) bytes_per_line = image -> columns ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = ( ssize_t ) image -> columns ; x != 0 ; -- x ) { ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 16 : { unsigned int alpha , pixel ; if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 2 * ( image -> columns + image -> columns % 2 ) ; image -> storage_class = DirectClass ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( * p ++ ) << 8 ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 5 ) red |= ( ( red & 0xe000 ) >> 5 ) ; if ( quantum_bits . red <= 8 ) red |= ( ( red & 0xff00 ) >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 5 ) green |= ( ( green & 0xe000 ) >> 5 ) ; if ( quantum_bits . green == 6 ) green |= ( ( green & 0xc000 ) >> 6 ) ; if ( quantum_bits . green <= 8 ) green |= ( ( green & 0xff00 ) >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 5 ) blue |= ( ( blue & 0xe000 ) >> 5 ) ; if ( quantum_bits . blue <= 8 ) blue |= ( ( blue & 0xff00 ) >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha <= 8 ) alpha |= ( ( alpha & 0xff00 ) >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 24 : { bytes_per_line = 4 * ( ( image -> columns * 24 + 31 ) / 32 ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 32 : { if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { unsigned int alpha , pixel ; p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( ( unsigned int ) * p ++ << 8 ) ; pixel |= ( ( unsigned int ) * p ++ << 16 ) ; pixel |= ( ( unsigned int ) * p ++ << 24 ) ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 8 ) red |= ( red >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 8 ) green |= ( green >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 8 ) blue |= ( blue >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha == 8 ) alpha |= ( alpha >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } default : { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( y > 0 ) break ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( bmp_info . height < 0 ) { Image * flipped_image ; flipped_image = FlipImage ( image , exception ) ; if ( flipped_image != ( Image * ) NULL ) { DuplicateBlob ( flipped_image , image ) ; ReplaceImageInList ( & image , flipped_image ) ; image = flipped_image ; } } if ( ( bmp_info . colorspace == 0x4D424544L ) && ( profile_data > 0 ) && ( profile_size > 0 ) ) { StringInfo * profile ; unsigned char * datum ; offset = start_position + 14 + profile_data ; if ( ( offset < TellBlob ( image ) ) || ( SeekBlob ( image , offset , SEEK_SET ) != offset ) || ( GetBlobSize ( image ) < ( MagickSizeType ) ( offset + profile_size ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; profile = AcquireStringInfo ( ( size_t ) profile_size ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( CorruptImageError , \"MemoryAllocationFailed\" ) ; datum = GetStringInfoDatum ( profile ) ; if ( ReadBlob ( image , ( size_t ) profile_size , datum ) == ( ssize_t ) profile_size ) { MagickOffsetType profile_size_orig ; profile_size_orig = ( MagickOffsetType ) datum [ 0 ] << 24 ; profile_size_orig |= ( MagickOffsetType ) datum [ 1 ] << 16 ; profile_size_orig |= ( MagickOffsetType ) datum [ 2 ] << 8 ; profile_size_orig |= ( MagickOffsetType ) datum [ 3 ] ; if ( profile_size_orig < profile_size ) SetStringInfoLength ( profile , ( size_t ) profile_size_orig ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"Profile:<S2SV_blank>ICC,<S2SV_blank>%u<S2SV_blank>bytes\" , ( unsigned int ) profile_size_orig ) ; ( void ) SetImageProfile ( image , \"icc\" , profile , exception ) ; } profile = DestroyStringInfo ( profile ) ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; offset = ( MagickOffsetType ) bmp_info . ba_offset ; if ( offset != 0 ) if ( ( offset < TellBlob ( image ) ) || ( SeekBlob ( image , offset , SEEK_SET ) != offset ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; * magick = '\\\\0' ; count = ReadBlob ( image , 2 , magick ) ; if ( ( count == 2 ) && ( IsBMP ( magick , 2 ) != MagickFalse ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; <S2SV_StartBug> return ( ( Image * ) NULL ) ; <S2SV_EndBug> } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( IsBMP ( magick , 2 ) != MagickFalse ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = MagickFalse ; break <S2SV_ModEnd> ; } image\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 TSQuery parse_tsquery ( char * buf , PushFunction pushval , Datum opaque , bool isplain ) { struct TSQueryParserStateData state ; int i ; TSQuery query ; int commonlen ; QueryItem * ptr ; ListCell * cell ; state . buffer = buf ; state . buf = buf ; state . state = ( isplain ) ? WAITSINGLEOPERAND : WAITFIRSTOPERAND ; state . count = 0 ; state . polstr = NIL ; state . valstate = init_tsvector_parser ( state . buffer , true , true ) ; state . sumlen = 0 ; state . lenop = 64 ; state . curop = state . op = ( char * ) palloc ( state . lenop ) ; * ( state . curop ) = '\\\\0' ; makepol ( & state , pushval , opaque ) ; close_tsvector_parser ( state . valstate ) ; if ( list_length ( state . polstr ) == 0 ) { ereport ( NOTICE , ( errmsg ( \"text-search<S2SV_blank>query<S2SV_blank>doesn\\'t<S2SV_blank>contain<S2SV_blank>lexemes:<S2SV_blank>\\\\\"%s\\\\\"\" , state . buffer ) ) ) ; query = ( TSQuery ) palloc ( HDRSIZETQ ) ; SET_VARSIZE ( query , HDRSIZETQ ) ; query -> size = 0 ; return query ; <S2SV_StartBug> } <S2SV_EndBug> commonlen = COMPUTESIZE ( list_length ( state . polstr ) , state . sumlen ) ; query = ( TSQuery ) palloc0 ( commonlen ) ; SET_VARSIZE ( query , commonlen ) ; query -> size = list_length ( state . polstr ) ; ptr = GETQUERY ( query ) ; i = 0 ; foreach ( cell , state . polstr ) { QueryItem * item = ( QueryItem * ) lfirst ( cell ) ; switch ( item -> type ) { case QI_VAL : memcpy ( & ptr [ i ] , item , sizeof ( QueryOperand ) ) ; break ; case QI_VALSTOP : ptr [ i ] . type = QI_VALSTOP ; break ; case QI_OPR : memcpy ( & ptr [ i ] , item , sizeof ( QueryOperator ) ) ; break ; default : elog ( ERROR , \"unrecognized<S2SV_blank>QueryItem<S2SV_blank>type:<S2SV_blank>%d\" , item -> type ) ; } i ++ ; } memcpy ( ( void * ) GETOPERAND ( query ) , ( void * ) state . op , state . sumlen ) ; pfree ( state . op ) ; findoprnd ( ptr , query -> size ) ; return query ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> query ; } if ( TSQUERY_TOO_BIG ( list_length ( state . polstr ) , state . sumlen ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"tsquery<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 void pdf_load_pages_kids ( FILE * fp , pdf_t * pdf ) { int i , id , dummy ; char * buf , * c ; long start , sz ; start = ftell ( fp ) ; for ( i = 0 ; i < pdf -> n_xrefs ; i ++ ) { if ( pdf -> xrefs [ i ] . version && ( pdf -> xrefs [ i ] . end != 0 ) ) { fseek ( fp , pdf -> xrefs [ i ] . start , SEEK_SET ) ; while ( SAFE_F ( fp , ( fgetc ( fp ) != 't' ) ) ) ; sz = pdf -> xrefs [ i ] . end - ftell ( fp ) ; <S2SV_StartBug> buf = malloc ( sz + 1 ) ; <S2SV_EndBug> SAFE_E ( fread ( buf , 1 , sz , fp ) , sz , \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>/Root.\\\\n\" ) ; buf [ sz ] = '\\\\0' ; if ( ! ( c = strstr ( buf , \"/Root\" ) ) ) { free ( buf ) ; continue ; } id = atoi ( c + strlen ( \"/Root\" ) + 1 ) ; free ( buf ) ; buf = get_object ( fp , id , & pdf -> xrefs [ i ] , NULL , & dummy ) ; if ( ! buf || ! ( c = strstr ( buf , \"/Pages\" ) ) ) { free ( buf ) ; continue ; } id = atoi ( c + strlen ( \"/Pages\" ) + 1 ) ; load_kids ( fp , id , & pdf -> xrefs [ i ] ) ; free ( buf ) ; } } fseek ( fp , start , SEEK_SET ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; buf = safe_calloc <S2SV_ModEnd> ( sz +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11338\n\n```\nCWE-476 static int decode_nal_unit ( HEVCContext * s , const H2645NAL * nal ) { HEVCLocalContext * lc = s -> HEVClc ; GetBitContext * gb = & lc -> gb ; int ctb_addr_ts , ret ; * gb = nal -> gb ; s -> nal_unit_type = nal -> type ; s -> temporal_id = nal -> temporal_id ; switch ( s -> nal_unit_type ) { case HEVC_NAL_VPS : if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_params ) { ret = s -> avctx -> hwaccel -> decode_params ( s -> avctx , nal -> type , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } ret = ff_hevc_decode_nal_vps ( gb , s -> avctx , & s -> ps ) ; if ( ret < 0 ) goto fail ; break ; case HEVC_NAL_SPS : if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_params ) { ret = s -> avctx -> hwaccel -> decode_params ( s -> avctx , nal -> type , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } ret = ff_hevc_decode_nal_sps ( gb , s -> avctx , & s -> ps , s -> apply_defdispwin ) ; if ( ret < 0 ) goto fail ; break ; case HEVC_NAL_PPS : if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_params ) { ret = s -> avctx -> hwaccel -> decode_params ( s -> avctx , nal -> type , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } ret = ff_hevc_decode_nal_pps ( gb , s -> avctx , & s -> ps ) ; if ( ret < 0 ) goto fail ; break ; case HEVC_NAL_SEI_PREFIX : case HEVC_NAL_SEI_SUFFIX : if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_params ) { ret = s -> avctx -> hwaccel -> decode_params ( s -> avctx , nal -> type , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } ret = ff_hevc_decode_nal_sei ( gb , s -> avctx , & s -> sei , & s -> ps , s -> nal_unit_type ) ; if ( ret < 0 ) goto fail ; break ; case HEVC_NAL_TRAIL_R : case HEVC_NAL_TRAIL_N : case HEVC_NAL_TSA_N : case HEVC_NAL_TSA_R : case HEVC_NAL_STSA_N : case HEVC_NAL_STSA_R : case HEVC_NAL_BLA_W_LP : case HEVC_NAL_BLA_W_RADL : case HEVC_NAL_BLA_N_LP : case HEVC_NAL_IDR_W_RADL : case HEVC_NAL_IDR_N_LP : case HEVC_NAL_CRA_NUT : case HEVC_NAL_RADL_N : case HEVC_NAL_RADL_R : case HEVC_NAL_RASL_N : case HEVC_NAL_RASL_R : ret = hls_slice_header ( s ) ; if ( ret < 0 ) <S2SV_StartBug> return ret ; <S2SV_EndBug> if ( ( s -> avctx -> skip_frame >= AVDISCARD_BIDIR && s -> sh . slice_type == HEVC_SLICE_B ) || ( s -> avctx -> skip_frame >= AVDISCARD_NONINTRA && s -> sh . slice_type != HEVC_SLICE_I ) || ( s -> avctx -> skip_frame >= AVDISCARD_NONKEY && ! IS_IRAP ( s ) ) ) { break ; } if ( s -> sh . first_slice_in_pic_flag ) { <S2SV_StartBug> if ( s -> ref ) { <S2SV_EndBug> av_log ( s -> avctx , AV_LOG_ERROR , \"Two<S2SV_blank>slices<S2SV_blank>reporting<S2SV_blank>being<S2SV_blank>the<S2SV_blank>first<S2SV_blank>in<S2SV_blank>the<S2SV_blank>same<S2SV_blank>frame.\\\\n\" ) ; goto fail ; } if ( s -> max_ra == INT_MAX ) { if ( s -> nal_unit_type == HEVC_NAL_CRA_NUT || IS_BLA ( s ) ) { s -> max_ra = s -> poc ; } else { if ( IS_IDR ( s ) ) s -> max_ra = INT_MIN ; } } if ( ( s -> nal_unit_type == HEVC_NAL_RASL_R || s -> nal_unit_type == HEVC_NAL_RASL_N ) && s -> poc <= s -> max_ra ) { s -> is_decoded = 0 ; break ; } else { if ( s -> nal_unit_type == HEVC_NAL_RASL_R && s -> poc > s -> max_ra ) s -> max_ra = INT_MIN ; } s -> overlap ++ ; ret = hevc_frame_start ( s ) ; if ( ret < 0 ) return ret ; } else if ( ! s -> ref ) { av_log ( s -> avctx , AV_LOG_ERROR , \"First<S2SV_blank>slice<S2SV_blank>in<S2SV_blank>a<S2SV_blank>frame<S2SV_blank>missing.\\\\n\" ) ; goto fail ; } if ( s -> nal_unit_type != s -> first_nal_type ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Non-matching<S2SV_blank>NAL<S2SV_blank>types<S2SV_blank>of<S2SV_blank>the<S2SV_blank>VCL<S2SV_blank>NALUs:<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , s -> first_nal_type , s -> nal_unit_type ) ; return AVERROR_INVALIDDATA ; } if ( ! s -> sh . dependent_slice_segment_flag && s -> sh . slice_type != HEVC_SLICE_I ) { ret = ff_hevc_slice_rpl ( s ) ; if ( ret < 0 ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Error<S2SV_blank>constructing<S2SV_blank>the<S2SV_blank>reference<S2SV_blank>lists<S2SV_blank>for<S2SV_blank>the<S2SV_blank>current<S2SV_blank>slice.\\\\n\" ) ; goto fail ; } } if ( s -> sh . first_slice_in_pic_flag && s -> avctx -> hwaccel ) { ret = s -> avctx -> hwaccel -> start_frame ( s -> avctx , NULL , 0 ) ; if ( ret < 0 ) goto fail ; } if ( s -> avctx -> hwaccel ) { ret = s -> avctx -> hwaccel -> decode_slice ( s -> avctx , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } else { if ( s -> threads_number > 1 && s -> sh . num_entry_point_offsets > 0 ) ctb_addr_ts = hls_slice_data_wpp ( s , nal ) ; else ctb_addr_ts = hls_slice_data ( s ) ; if ( ctb_addr_ts >= ( s -> ps . sps -> ctb_width * s -> ps . sps -> ctb_height ) ) { s -> is_decoded = 1 ; } if ( ctb_addr_ts < 0 ) { ret = ctb_addr_ts ; goto fail ; } } break ; case HEVC_NAL_EOS_NUT : case HEVC_NAL_EOB_NUT : s -> seq_decode = ( s -> seq_decode + 1 ) & 0xff ; s -> max_ra = INT_MAX ; break ; case HEVC_NAL_AUD : case HEVC_NAL_FD_NUT : break ; default : av_log ( s -> avctx , AV_LOG_INFO , \"Skipping<S2SV_blank>NAL<S2SV_blank>unit<S2SV_blank>%d\\\\n\" , s -> nal_unit_type ) ; } return 0 ; fail : if ( s -> avctx -> err_recognition & AV_EF_EXPLODE ) return ret ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ret ; if ( ret == 1 ) { ret = AVERROR_INVALIDDATA ; goto fail ; } <S2SV_ModStart> ( s -> <S2SV_ModEnd> max_ra == INT_MAX\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3817\n\n```\nCWE-416 void comps_rtree_unite ( COMPS_RTree * rt1 , COMPS_RTree * rt2 ) { COMPS_HSList * tmplist , * tmp_subnodes ; COMPS_HSListItem * it ; struct Pair { COMPS_HSList * subnodes ; char * key ; <S2SV_StartBug> char added ; <S2SV_EndBug> } * pair , * parent_pair ; pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = rt2 -> subnodes ; pair -> key = NULL ; tmplist = comps_hslist_create ( ) ; comps_hslist_init ( tmplist , NULL , NULL , & free ) ; comps_hslist_append ( tmplist , pair , 0 ) ; while ( tmplist -> first != NULL ) { it = tmplist -> first ; comps_hslist_remove ( tmplist , tmplist -> first ) ; tmp_subnodes = ( ( struct Pair * ) it -> data ) -> subnodes ; parent_pair = ( struct Pair * ) it -> data ; free ( it ) ; for ( it = tmp_subnodes -> first ; it != NULL ; it = it -> next ) { pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = ( ( COMPS_RTreeData * ) it -> data ) -> subnodes ; if ( parent_pair -> key != NULL ) { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_RTreeData * ) it -> data ) -> key ) + strlen ( parent_pair -> key ) + 1 ) ) ; memcpy ( pair -> key , parent_pair -> key , sizeof ( char ) * strlen ( parent_pair -> key ) ) ; memcpy ( pair -> key + strlen ( parent_pair -> key ) , ( ( COMPS_RTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_RTreeData * ) it -> data ) -> key ) + 1 ) ) ; } else { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_RTreeData * ) it -> data ) -> key ) + 1 ) ) ; memcpy ( pair -> key , ( ( COMPS_RTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_RTreeData * ) it -> data ) -> key ) + 1 ) ) ; } if ( ( ( COMPS_RTreeData * ) it -> data ) -> data != NULL ) { comps_rtree_set ( rt1 , pair -> key , rt2 -> data_cloner ( ( ( COMPS_RTreeData * ) it -> data ) -> data ) ) ; } if ( ( ( COMPS_RTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } free ( parent_pair -> key ) ; free ( parent_pair ) ; } comps_hslist_destroy ( & tmplist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * key ; <S2SV_ModEnd> } * pair\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5940\n\n```\nCWE-269 static void copy_xauthority ( void ) { char * src = RUN_XAUTHORITY_FILE ; char * dest ; if ( asprintf ( & dest , \"%s/.Xauthority\" , cfg . homedir ) == - 1 ) errExit ( \"asprintf\" ) ; if ( is_link ( dest ) ) { fprintf ( stderr , \"Error:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symbolic<S2SV_blank>link\\\\n\" , dest ) ; exit ( 1 ) ; } <S2SV_StartBug> pid_t child = fork ( ) ; <S2SV_EndBug> if ( child < 0 ) errExit ( \"fork\" ) ; if ( child == 0 ) { drop_privs ( 0 ) ; <S2SV_StartBug> int rv = copy_file ( src , dest ) ; <S2SV_EndBug> if ( rv ) fprintf ( stderr , \"Warning:<S2SV_blank>cannot<S2SV_blank>transfer<S2SV_blank>.Xauthority<S2SV_blank>in<S2SV_blank>private<S2SV_blank>home<S2SV_blank>directory\\\\n\" ) ; else { fs_logger2 ( \"clone\" , dest ) ; } _exit ( 0 ) ; } waitpid ( child , NULL , 0 ) ; <S2SV_StartBug> if ( chown ( dest , getuid ( ) , getgid ( ) ) < 0 ) <S2SV_EndBug> errExit ( \"chown\" ) ; <S2SV_StartBug> if ( chmod ( dest , S_IRUSR | S_IWUSR ) < 0 ) <S2SV_EndBug> errExit ( \"chmod\" ) ; unlink ( src ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } copy_file_as_user <S2SV_ModEnd> ( src , <S2SV_ModStart> ( src , <S2SV_ModEnd> dest , getuid <S2SV_ModStart> getgid ( ) <S2SV_ModEnd> , S_IRUSR | <S2SV_ModStart> | S_IWUSR ) ; fs_logger2 ( \"clone\" , dest <S2SV_ModEnd> ) ; unlink\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> static inline long decode_twos_comp ( ulong c , int prec ) <S2SV_EndBug> { long result ; assert ( prec >= 2 ) ; jas_eprintf ( \"warning:<S2SV_blank>support<S2SV_blank>for<S2SV_blank>signed<S2SV_blank>data<S2SV_blank>is<S2SV_blank>untested\\\\n\" ) ; result = ( c & ( ( 1 << ( prec - 1 ) ) - 1 ) ) - ( c & ( 1 << ( prec - 1 ) ) ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long decode_twos_comp ( jas_ulong <S2SV_ModEnd> c , int\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8cx_encode_inter_macroblock ( VP8_COMP * cpi , MACROBLOCK * x , TOKENEXTRA * * t , int recon_yoffset , int recon_uvoffset , int mb_row , int mb_col ) { MACROBLOCKD * const xd = & x -> e_mbd ; int intra_error = 0 ; int rate ; int distortion ; x -> skip = 0 ; if ( xd -> segmentation_enabled ) x -> encode_breakout = cpi -> segment_encode_breakout [ xd -> mode_info_context -> mbmi . segment_id ] ; else x -> encode_breakout = cpi -> oxcf . encode_breakout ; # if CONFIG_TEMPORAL_DENOISING x -> best_reference_frame = INTRA_FRAME ; x -> best_zeromv_reference_frame = INTRA_FRAME ; x -> best_sse_inter_mode = 0 ; x -> best_sse_mv . as_int = 0 ; x -> need_to_clamp_best_mvs = 0 ; # endif if ( cpi -> sf . RD ) { int zbin_mode_boost_enabled = x -> zbin_mode_boost_enabled ; if ( cpi -> sf . use_fastquant_for_pick ) { x -> quantize_b = vp8_fast_quantize_b ; <S2SV_StartBug> x -> quantize_b_pair = vp8_fast_quantize_b_pair ; <S2SV_EndBug> x -> zbin_mode_boost_enabled = 0 ; } vp8_rd_pick_inter_mode ( cpi , x , recon_yoffset , recon_uvoffset , & rate , <S2SV_StartBug> & distortion , & intra_error ) ; <S2SV_EndBug> if ( cpi -> sf . improved_quant ) { <S2SV_StartBug> x -> quantize_b = vp8_regular_quantize_b ; <S2SV_EndBug> x -> quantize_b_pair = vp8_regular_quantize_b_pair ; } x -> zbin_mode_boost_enabled = zbin_mode_boost_enabled ; } else { vp8_pick_inter_mode ( cpi , x , recon_yoffset , recon_uvoffset , & rate , & distortion , & intra_error , mb_row , mb_col ) ; } x -> prediction_error += distortion ; x -> intra_error += intra_error ; if ( cpi -> oxcf . tuning == VP8_TUNE_SSIM ) { adjust_act_zbin ( cpi , x ) ; } # if 0 cpi -> frame_distortion += distortion ; cpi -> last_mb_distortion = distortion ; # endif if ( xd -> segmentation_enabled ) { if ( cpi -> current_layer == 0 && cpi -> cyclic_refresh_mode_enabled ) { if ( ( xd -> mode_info_context -> mbmi . segment_id == 1 ) && ( ( xd -> mode_info_context -> mbmi . ref_frame != LAST_FRAME ) || ( xd -> mode_info_context -> mbmi . mode != ZEROMV ) ) ) { xd -> mode_info_context -> mbmi . segment_id = 0 ; vp8cx_mb_init_quantizer ( cpi , x , 1 ) ; } } } { x -> zbin_mode_boost = 0 ; if ( x -> zbin_mode_boost_enabled ) { if ( xd -> mode_info_context -> mbmi . ref_frame != INTRA_FRAME ) { if ( xd -> mode_info_context -> mbmi . mode == ZEROMV ) { if ( xd -> mode_info_context -> mbmi . ref_frame != LAST_FRAME && cpi -> oxcf . number_of_layers == 1 ) x -> zbin_mode_boost = GF_ZEROMV_ZBIN_BOOST ; else x -> zbin_mode_boost = LF_ZEROMV_ZBIN_BOOST ; } else if ( xd -> mode_info_context -> mbmi . mode == SPLITMV ) x -> zbin_mode_boost = 0 ; else x -> zbin_mode_boost = MV_ZBIN_BOOST ; } } if ( cpi -> sf . improved_quant ) vp8_update_zbin_extra ( cpi , x ) ; } x -> count_mb_ref_frame_usage [ xd -> mode_info_context -> mbmi . ref_frame ] ++ ; if ( xd -> mode_info_context -> mbmi . ref_frame == INTRA_FRAME ) { vp8_encode_intra16x16mbuv ( x ) ; if ( xd -> mode_info_context -> mbmi . mode == B_PRED ) { vp8_encode_intra4x4mby ( x ) ; } else { vp8_encode_intra16x16mby ( x ) ; } sum_intra_stats ( cpi , x ) ; } else { int ref_fb_idx ; if ( xd -> mode_info_context -> mbmi . ref_frame == LAST_FRAME ) ref_fb_idx = cpi -> common . lst_fb_idx ; else if ( xd -> mode_info_context -> mbmi . ref_frame == GOLDEN_FRAME ) ref_fb_idx = cpi -> common . gld_fb_idx ; else ref_fb_idx = cpi -> common . alt_fb_idx ; xd -> pre . y_buffer = cpi -> common . yv12_fb [ ref_fb_idx ] . y_buffer + recon_yoffset ; xd -> pre . u_buffer = cpi -> common . yv12_fb [ ref_fb_idx ] . u_buffer + recon_uvoffset ; xd -> pre . v_buffer = cpi -> common . yv12_fb [ ref_fb_idx ] . v_buffer + recon_uvoffset ; if ( ! x -> skip ) { vp8_encode_inter16x16 ( x ) ; } else vp8_build_inter16x16_predictors_mb ( xd , xd -> dst . y_buffer , xd -> dst . u_buffer , xd -> dst . v_buffer , xd -> dst . y_stride , xd -> dst . uv_stride ) ; } if ( ! x -> skip ) { vp8_tokenize_mb ( cpi , x , t ) ; if ( xd -> mode_info_context -> mbmi . mode != B_PRED ) vp8_inverse_transform_mby ( xd ) ; vp8_dequant_idct_add_uv_block ( xd -> qcoeff + 16 * 16 , xd -> dequant_uv , xd -> dst . u_buffer , xd -> dst . v_buffer , xd -> dst . uv_stride , xd -> eobs + 16 ) ; } else { xd -> mode_info_context -> mbmi . mb_skip_coeff = 1 ; if ( cpi -> common . mb_no_coeff_skip ) { x -> skip_true_count ++ ; vp8_fix_contexts ( xd ) ; } else { vp8_stuff_mb ( cpi , x , t ) ; } } return rate ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; x -> <S2SV_ModEnd> zbin_mode_boost_enabled = 0 <S2SV_ModStart> , & intra_error , mb_row , mb_col <S2SV_ModStart> quantize_b = vp8_regular_quantize_b <S2SV_ModEnd> ; } x\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static char * decode_text_string ( const char * str , size_t str_len ) { int idx , is_hex , is_utf16be , ascii_idx ; char * ascii , hex_buf [ 5 ] = { 0 } ; is_hex = is_utf16be = idx = ascii_idx = 0 ; if ( str [ 0 ] == '(' ) { <S2SV_StartBug> ascii = malloc ( strlen ( str ) + 1 ) ; <S2SV_EndBug> strncpy ( ascii , str , strlen ( str ) + 1 ) ; return ascii ; } else if ( str [ 0 ] == '<' ) { is_hex = 1 ; ++ idx ; } if ( is_hex && ( str_len > 5 ) && ( str [ idx ] == 'F' ) && ( str [ idx + 1 ] == 'E' ) && ( str [ idx + 2 ] == 'F' ) && ( str [ idx + 3 ] == 'F' ) ) { is_utf16be = 1 ; idx += 4 ; } else return NULL ; <S2SV_StartBug> ascii = malloc ( str_len ) ; <S2SV_EndBug> for ( ; idx < str_len ; ++ idx ) { hex_buf [ 0 ] = str [ idx ++ ] ; hex_buf [ 1 ] = str [ idx ++ ] ; hex_buf [ 2 ] = str [ idx ++ ] ; hex_buf [ 3 ] = str [ idx ] ; ascii [ ascii_idx ++ ] = strtol ( hex_buf , NULL , 16 ) ; } return ascii ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ascii = safe_calloc <S2SV_ModEnd> ( strlen ( <S2SV_ModStart> ; ascii = safe_calloc <S2SV_ModEnd> ( str_len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 date PGTYPESdate_from_asc ( char * str , char * * endptr ) { date dDate ; fsec_t fsec ; struct tm tt , * tm = & tt ; int dtype ; int nf ; char * field [ MAXDATEFIELDS ] ; int ftype [ MAXDATEFIELDS ] ; <S2SV_StartBug> char lowstr [ MAXDATELEN + 1 ] ; <S2SV_EndBug> char * realptr ; char * * ptr = ( endptr != NULL ) ? endptr : & realptr ; bool EuroDates = FALSE ; errno = 0 ; <S2SV_StartBug> if ( strlen ( str ) >= sizeof ( lowstr ) ) <S2SV_EndBug> { errno = PGTYPES_DATE_BAD_DATE ; return INT_MIN ; } if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || DecodeDateTime ( field , ftype , nf , & dtype , tm , & fsec , EuroDates ) != 0 ) { errno = PGTYPES_DATE_BAD_DATE ; return INT_MIN ; } switch ( dtype ) { case DTK_DATE : break ; case DTK_EPOCH : if ( GetEpochTime ( tm ) < 0 ) { errno = PGTYPES_DATE_BAD_DATE ; return INT_MIN ; } break ; default : errno = PGTYPES_DATE_BAD_DATE ; return INT_MIN ; } dDate = ( date2j ( tm -> tm_year , tm -> tm_mon , tm -> tm_mday ) - date2j ( 2000 , 1 , 1 ) ) ; return dDate ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ MAXDATELEN + MAXDATEFIELDS <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( str ) > MAXDATELEN <S2SV_ModEnd> ) { errno\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1479\n\n```\nCWE-399 static void inotify_free_group_priv ( struct fsnotify_group * group ) { idr_for_each ( & group -> inotify_data . idr , idr_callback , group ) ; idr_remove_all ( & group -> inotify_data . idr ) ; idr_destroy ( & group -> inotify_data . idr ) ; <S2SV_StartBug> free_uid ( group -> inotify_data . user ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> idr ) ; atomic_dec ( & group -> inotify_data . user -> inotify_devs ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1789\n\n```\nCWE-119 int X509_cmp_time ( const ASN1_TIME * ctm , time_t * cmp_time ) { char * str ; ASN1_TIME atm ; long offset ; char buff1 [ 24 ] , buff2 [ 24 ] , * p ; <S2SV_StartBug> int i , j ; <S2SV_EndBug> p = buff1 ; <S2SV_StartBug> i = ctm -> length ; <S2SV_EndBug> str = ( char * ) ctm -> data ; if ( ctm -> type == V_ASN1_UTCTIME ) { <S2SV_StartBug> if ( ( i < 11 ) || ( i > 17 ) ) <S2SV_EndBug> return 0 ; memcpy ( p , str , 10 ) ; p += 10 ; str += 10 ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> if ( i < 13 ) <S2SV_EndBug> return 0 ; memcpy ( p , str , 12 ) ; p += 12 ; str += 12 ; <S2SV_StartBug> } <S2SV_EndBug> if ( ( * str == 'Z' ) || ( * str == '-' ) || ( * str == '+' ) ) { * ( p ++ ) = '0' ; * ( p ++ ) = '0' ; } else { <S2SV_StartBug> * ( p ++ ) = * ( str ++ ) ; <S2SV_EndBug> * ( p ++ ) = * ( str ++ ) ; if ( * str == '.' ) { str ++ ; <S2SV_StartBug> while ( ( * str >= '0' ) && ( * str <= '9' ) ) <S2SV_EndBug> str ++ ; } } * ( p ++ ) = 'Z' ; * ( p ++ ) = '\\\\0' ; <S2SV_StartBug> if ( * str == 'Z' ) <S2SV_EndBug> offset = 0 ; <S2SV_StartBug> else { <S2SV_EndBug> <S2SV_StartBug> if ( ( * str != '+' ) && ( * str != '-' ) ) <S2SV_EndBug> return 0 ; offset = ( ( str [ 1 ] - '0' ) * 10 + ( str [ 2 ] - '0' ) ) * 60 ; offset += ( str [ 3 ] - '0' ) * 10 + ( str [ 4 ] - '0' ) ; if ( * str == '-' ) offset = - offset ; } atm . type = ctm -> type ; atm . flags = 0 ; atm . length = sizeof ( buff2 ) ; atm . data = ( unsigned char * ) buff2 ; if ( X509_time_adj ( & atm , offset * 60 , cmp_time ) == NULL ) return 0 ; if ( ctm -> type == V_ASN1_UTCTIME ) { i = ( buff1 [ 0 ] - '0' ) * 10 + ( buff1 [ 1 ] - '0' ) ; if ( i < 50 ) i += 100 ; j = ( buff2 [ 0 ] - '0' ) * 10 + ( buff2 [ 1 ] - '0' ) ; if ( j < 50 ) j += 100 ; if ( i < j ) return - 1 ; if ( i > j ) return 1 ; } i = strcmp ( buff1 , buff2 ) ; if ( i == 0 ) return - 1 ; else return i ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i , j , remaining <S2SV_ModStart> = buff1 ; remaining <S2SV_ModEnd> = ctm -> <S2SV_ModStart> V_ASN1_UTCTIME ) { int min_length = sizeof ( \"YYMMDDHHMMZ\" ) - 1 ; int max_length = sizeof ( \"YYMMDDHHMMSS+hhmm\" ) - 1 ; if ( remaining < min_length || remaining > max_length <S2SV_ModEnd> ) return 0 <S2SV_ModStart> += 10 ; remaining -= 10 ; <S2SV_ModStart> } else { int min_length = sizeof ( \"YYYYMMDDHHMMZ\" ) - 1 ; int max_length = sizeof ( \"YYYYMMDDHHMMSS.fff+hhmm\" ) - 1 ; if ( remaining < min_length || remaining > max_length <S2SV_ModEnd> ) return 0 <S2SV_ModStart> += 12 ; remaining -= 12 ; <S2SV_ModStart> } else { if ( remaining < 2 ) return 0 ; * ( p ++ ) = * ( str ++ ) ; * ( p ++ ) = * ( str ++ ) ; remaining -= 2 ; if ( remaining && <S2SV_ModEnd> * str == <S2SV_ModStart> str ++ ; remaining -- ; for ( i = 0 ; i < 3 && remaining ; i ++ , str ++ , remaining -- ) { if ( * str < '0' || * str > '9' ) break ; } <S2SV_ModEnd> } } * <S2SV_ModStart> ; if ( ! remaining ) return 0 ; if ( <S2SV_ModStart> == 'Z' ) { if ( remaining != 1 ) return 0 ; <S2SV_ModStart> = 0 ; } <S2SV_ModStart> != '-' ) ) return 0 ; if ( remaining != 5 ) return 0 ; if ( str [ 1 ] < '0' || str [ 1 ] > '9' || str [ 2 ] < '0' || str [ 2 ] > '9' || str [ 3 ] < '0' || str [ 3 ] > '9' || str [ 4 ] < '0' || str [ 4 ] > '9'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8130\n\n```\nCWE-369 void * _TIFFmalloc ( tmsize_t s ) <S2SV_StartBug> { <S2SV_EndBug> return ( malloc ( ( size_t ) s ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { if ( s == 0 ) return ( ( void * ) NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-755(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20422\n\n```\nCWE-755 struct dst_entry * fib6_rule_lookup ( struct net * net , struct flowi6 * fl6 , const struct sk_buff * skb , int flags , pol_lookup_t lookup ) { struct rt6_info * rt ; rt = lookup ( net , net -> ipv6 . fib6_main_tbl , fl6 , skb , flags ) ; if ( rt -> dst . error == - EAGAIN ) { ip6_rt_put_flags ( rt , flags ) ; rt = net -> ipv6 . ip6_null_entry ; <S2SV_StartBug> if ( ! ( flags | RT6_LOOKUP_F_DST_NOREF ) ) <S2SV_EndBug> dst_hold ( & rt -> dst ) ; } return & rt -> dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! ( flags & <S2SV_ModEnd> RT6_LOOKUP_F_DST_NOREF ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 gpol_ret * get_policy_2_svc ( gpol_arg * arg , struct svc_req * rqstp ) { static gpol_ret ret ; kadm5_ret_t ret2 ; char * prime_arg , * funcname ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_principal_ent_rec caller_ent ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_gpol_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; funcname = \"kadm5_get_policy\" ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } prime_arg = arg -> name ; ret . code = KADM5_AUTH_GET ; if ( ! CHANGEPW_SERVICE ( rqstp ) && kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_INQUIRE , NULL , NULL ) ) ret . code = KADM5_OK ; else { ret . code = kadm5_get_principal ( handle -> lhandle , handle -> current_caller , & caller_ent , KADM5_PRINCIPAL_NORMAL_MASK ) ; if ( ret . code == KADM5_OK ) { if ( caller_ent . aux_attributes & KADM5_POLICY && strcmp ( caller_ent . policy , arg -> name ) == 0 ) { ret . code = KADM5_OK ; } else ret . code = KADM5_AUTH_GET ; ret2 = kadm5_free_principal_ent ( handle -> lhandle , & caller_ent ) ; ret . code = ret . code ? ret . code : ret2 ; } } if ( ret . code == KADM5_OK ) { ret . code = kadm5_get_policy ( handle , arg -> name , & ret . rec ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( funcname , ( ( prime_arg == NULL ) ? \"(null)\" : prime_arg ) , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } else { log_unauth ( funcname , prime_arg , & client_name , & service_name , rqstp ) ; } <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> ) ; } exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0642\n\n```\nCWE-000 IHEVCD_ERROR_T ihevcd_mv_buf_mgr_add_bufs ( codec_t * ps_codec ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; WORD32 i ; WORD32 max_dpb_size ; WORD32 mv_bank_size_allocated ; WORD32 pic_mv_bank_size ; sps_t * ps_sps ; UWORD8 * pu1_buf ; mv_buf_t * ps_mv_buf ; ps_sps = ps_codec -> s_parse . ps_sps ; max_dpb_size = ps_sps -> ai1_sps_max_dec_pic_buffering [ ps_sps -> i1_sps_max_sub_layers - 1 ] ; max_dpb_size ++ ; <S2SV_StartBug> pu1_buf = ( UWORD8 * ) ps_codec -> pv_mv_bank_buf_base ; <S2SV_EndBug> ps_mv_buf = ( mv_buf_t * ) pu1_buf ; pu1_buf += max_dpb_size * sizeof ( mv_buf_t ) ; ps_codec -> ps_mv_buf = ps_mv_buf ; mv_bank_size_allocated = ps_codec -> i4_total_mv_bank_size - max_dpb_size * sizeof ( mv_buf_t ) ; pic_mv_bank_size = ihevcd_get_pic_mv_bank_size ( ALIGN64 ( ps_sps -> i2_pic_width_in_luma_samples ) * ALIGN64 ( ps_sps -> i2_pic_height_in_luma_samples ) ) ; for ( i = 0 ; i < max_dpb_size ; i ++ ) { WORD32 buf_ret ; WORD32 num_pu ; WORD32 num_ctb ; WORD32 pic_size ; pic_size = ALIGN64 ( ps_sps -> i2_pic_width_in_luma_samples ) * ALIGN64 ( ps_sps -> i2_pic_height_in_luma_samples ) ; num_pu = pic_size / ( MIN_PU_SIZE * MIN_PU_SIZE ) ; num_ctb = pic_size / ( MIN_CTB_SIZE * MIN_CTB_SIZE ) ; mv_bank_size_allocated -= pic_mv_bank_size ; if ( mv_bank_size_allocated < 0 ) { ps_codec -> s_parse . i4_error_code = IHEVCD_INSUFFICIENT_MEM_MVBANK ; return IHEVCD_INSUFFICIENT_MEM_MVBANK ; } ps_mv_buf -> pu4_pic_pu_idx = ( UWORD32 * ) pu1_buf ; pu1_buf += ( num_ctb + 1 ) * sizeof ( WORD32 ) ; ps_mv_buf -> pu1_pic_pu_map = pu1_buf ; pu1_buf += num_pu ; ps_mv_buf -> pu1_pic_slice_map = ( UWORD16 * ) pu1_buf ; pu1_buf += ALIGN4 ( num_ctb * sizeof ( UWORD16 ) ) ; ps_mv_buf -> ps_pic_pu = ( pu_t * ) pu1_buf ; pu1_buf += num_pu * sizeof ( pu_t ) ; buf_ret = ihevc_buf_mgr_add ( ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr , ps_mv_buf , i ) ; if ( 0 != buf_ret ) { ps_codec -> s_parse . i4_error_code = IHEVCD_BUF_MGR_ERROR ; return IHEVCD_BUF_MGR_ERROR ; } ps_mv_buf ++ ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> max_dpb_size ++ ; ps_codec -> i4_max_dpb_size = max_dpb_size ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14882\n\n```\nCWE-125 static void rpl_print ( netdissect_options * ndo , const struct icmp6_hdr * hdr , const u_char * bp , u_int length ) { int secured = hdr -> icmp6_code & 0x80 ; int basecode = hdr -> icmp6_code & 0x7f ; if ( secured ) { ND_PRINT ( ( ndo , \",<S2SV_blank>(SEC)<S2SV_blank>[worktodo]\" ) ) ; return ; } else { ND_PRINT ( ( ndo , \",<S2SV_blank>(CLR)\" ) ) ; } switch ( basecode ) { case ND_RPL_DAG_IS : ND_PRINT ( ( ndo , \"DODAG<S2SV_blank>Information<S2SV_blank>Solicitation\" ) ) ; if ( ndo -> ndo_vflag ) { } break ; case ND_RPL_DAG_IO : ND_PRINT ( ( ndo , \"DODAG<S2SV_blank>Information<S2SV_blank>Object\" ) ) ; if ( ndo -> ndo_vflag ) { rpl_dio_print ( ndo , bp , length ) ; } break ; case ND_RPL_DAO : ND_PRINT ( ( ndo , \"Destination<S2SV_blank>Advertisement<S2SV_blank>Object\" ) ) ; if ( ndo -> ndo_vflag ) { rpl_dao_print ( ndo , bp , length ) ; } break ; case ND_RPL_DAO_ACK : ND_PRINT ( ( ndo , \"Destination<S2SV_blank>Advertisement<S2SV_blank>Object<S2SV_blank>Ack\" ) ) ; if ( ndo -> ndo_vflag ) { rpl_daoack_print ( ndo , bp , length ) ; } break ; default : ND_PRINT ( ( ndo , \"RPL<S2SV_blank>message,<S2SV_blank>unknown<S2SV_blank>code<S2SV_blank>%u\" , hdr -> icmp6_code ) ) ; break ; } return ; # if 0 trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>[|truncated]\" ) ) ; <S2SV_EndBug> return ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"%s\" , rpl_tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static int nfs4_open_recover_helper ( struct nfs4_opendata * opendata , mode_t openflags , struct nfs4_state * * res ) <S2SV_EndBug> { struct nfs4_state * newstate ; int ret ; <S2SV_StartBug> opendata -> o_arg . open_flags = openflags ; <S2SV_EndBug> memset ( & opendata -> o_res , 0 , sizeof ( opendata -> o_res ) ) ; memset ( & opendata -> c_res , 0 , sizeof ( opendata -> c_res ) ) ; nfs4_init_opendata_res ( opendata ) ; ret = _nfs4_proc_open ( opendata ) ; if ( ret != 0 ) return ret ; newstate = nfs4_opendata_to_nfs4_state ( opendata ) ; if ( IS_ERR ( newstate ) ) return PTR_ERR ( newstate ) ; <S2SV_StartBug> nfs4_close_state ( & opendata -> path , newstate , openflags ) ; <S2SV_EndBug> * res = newstate ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * opendata , fmode_t fmode <S2SV_ModEnd> , struct nfs4_state <S2SV_ModStart> . open_flags = 0 ; opendata -> o_arg . fmode = fmode <S2SV_ModEnd> ; memset ( <S2SV_ModStart> , newstate , fmode <S2SV_ModEnd> ) ; *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t rawSocketReceiveEthPacket ( Socket * socket , SocketMsg * message , uint_t flags ) { error_t error ; SocketQueueItem * queueItem ; if ( ( flags & SOCKET_FLAG_DONT_WAIT ) == 0 ) { if ( socket -> receiveQueue == NULL ) { socket -> eventMask = SOCKET_EVENT_RX_READY ; osResetEvent ( & socket -> event ) ; osReleaseMutex ( & netMutex ) ; osWaitForEvent ( & socket -> event , socket -> timeout ) ; osAcquireMutex ( & netMutex ) ; } } if ( socket -> receiveQueue != NULL ) { queueItem = socket -> receiveQueue ; message -> length = netBufferRead ( message -> data , queueItem -> buffer , queueItem -> offset , message -> size ) ; <S2SV_StartBug> # if ( ETH_SUPPORT == ENABLED ) <S2SV_EndBug> message -> srcMacAddr = queueItem -> ancillary . srcMacAddr ; message -> destMacAddr = queueItem -> ancillary . destMacAddr ; # endif # if ( ETH_PORT_TAGGING_SUPPORT == ENABLED ) message -> switchPort = queueItem -> ancillary . port ; # endif # if ( ETH_TIMESTAMP_SUPPORT == ENABLED ) message -> timestamp = queueItem -> ancillary . timestamp ; # endif if ( ( flags & SOCKET_FLAG_PEEK ) == 0 ) { socket -> receiveQueue = queueItem -> next ; netBufferFree ( queueItem -> buffer ) ; } rawSocketUpdateEvents ( socket ) ; error = NO_ERROR ; } else { message -> length = 0 ; error = ERROR_TIMEOUT ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) ; message -> interface = queueItem -> interface ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int FstringParser_ConcatFstring ( FstringParser * state , const char * * str , const char * end , int raw , int recurse_lvl , struct compiling * c , const node * n ) { FstringParser_check_invariants ( state ) ; <S2SV_StartBug> while ( 1 ) { <S2SV_EndBug> PyObject * literal = NULL ; expr_ty expression = NULL ; int result = fstring_find_literal_and_expr ( str , end , raw , recurse_lvl , & literal , & expression , c , n ) ; if ( result < 0 ) return - 1 ; if ( ! literal ) { } else if ( ! state -> last_str ) { state -> last_str = literal ; literal = NULL ; } else { assert ( PyUnicode_GET_LENGTH ( literal ) != 0 ) ; if ( FstringParser_ConcatAndDel ( state , literal ) < 0 ) return - 1 ; literal = NULL ; } <S2SV_StartBug> assert ( ! state -> last_str || <S2SV_EndBug> PyUnicode_GET_LENGTH ( state -> last_str ) != 0 ) ; assert ( literal == NULL ) ; if ( result == 1 ) continue ; if ( ! expression ) break ; if ( ! state -> last_str ) { } else { expr_ty str = make_str_node_and_del ( & state -> last_str , c , n ) ; if ( ! str || ExprList_Append ( & state -> expr_list , str ) < 0 ) return - 1 ; } if ( ExprList_Append ( & state -> expr_list , expression ) < 0 ) return - 1 ; } if ( recurse_lvl == 0 && * str < end - 1 ) { ast_error ( c , n , \"f-string:<S2SV_blank>unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>string\" ) ; return - 1 ; } if ( recurse_lvl != 0 && * * str != '}' ) { ast_error ( c , n , \"f-string:<S2SV_blank>expecting<S2SV_blank>\\'}\\'\" ) ; return - 1 ; } FstringParser_check_invariants ( state ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> state ) ; state -> fmode = 1 ; <S2SV_ModStart> } assert ( <S2SV_ModEnd> literal == NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0207\n\n```\nCWE-119 ssize_t cdf_read_short_sector ( const cdf_stream_t * sst , void * buf , size_t offs , size_t len , const cdf_header_t * h , cdf_secid_t id ) { size_t ss = CDF_SHORT_SEC_SIZE ( h ) ; size_t pos = CDF_SHORT_SEC_POS ( h , id ) ; assert ( ss == len ) ; <S2SV_StartBug> if ( pos > CDF_SEC_SIZE ( h ) * sst -> sst_len ) { <S2SV_EndBug> DPRINTF ( ( \"Out<S2SV_blank>of<S2SV_blank>bounds<S2SV_blank>read<S2SV_blank>%\" SIZE_T_FORMAT \"u<S2SV_blank>><S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , <S2SV_StartBug> pos , CDF_SEC_SIZE ( h ) * sst -> sst_len ) ) ; <S2SV_EndBug> return - 1 ; } ( void ) memcpy ( ( ( char * ) buf ) + offs , ( ( const char * ) sst -> sst_tab ) + pos , len ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( pos + len <S2SV_ModStart> \"u\\\\n\" , pos + len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15932\n\n```\nCWE-125 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( shdr -> sh_size < 1 ) { return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; for ( cnt = 0 , i = 0 ; i >= 0 && cnt < shdr -> sh_info && ( ( char * ) defs + i < end ) ; ++ cnt ) { Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; char key [ 32 ] = { 0 } ; Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) <S2SV_StartBug> vstart += verdef -> vd_aux ; <S2SV_EndBug> if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; } i += verdef -> vd_next ; } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , j ) int vdaux = verdef -> vd_aux ; if ( vdaux < 1 ) { sdb_free ( sdb_verdef ) ; goto out_error ; } vstart += vdaux <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5357\n\n```\nCWE-20 static gboolean parse_netscreen_packet ( FILE_T fh , struct wtap_pkthdr * phdr , Buffer * buf , char * line , int * err , gchar * * err_info ) { <S2SV_StartBug> int sec ; <S2SV_EndBug> int dsec ; char cap_int [ NETSCREEN_MAX_INT_NAME_LENGTH ] ; char direction [ 2 ] ; <S2SV_StartBug> guint pkt_len ; <S2SV_EndBug> char cap_src [ 13 ] ; char cap_dst [ 13 ] ; guint8 * pd ; gchar * p ; int n , i = 0 ; <S2SV_StartBug> guint offset = 0 ; <S2SV_EndBug> gchar dststr [ 13 ] ; phdr -> rec_type = REC_TYPE_PACKET ; phdr -> presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN ; <S2SV_StartBug> if ( sscanf ( line , \"%9d.%9d:<S2SV_blank>%15[a-z0-9/:.-](%1[io])<S2SV_blank>len=%9u:%12s->%12s/\" , <S2SV_EndBug> & sec , & dsec , cap_int , direction , & pkt_len , cap_src , cap_dst ) < 5 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>Can\\'t<S2SV_blank>parse<S2SV_blank>packet-header\" ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } if ( pkt_len > WTAP_MAX_PACKET_SIZE ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup_printf ( \"netscreen:<S2SV_blank>File<S2SV_blank>has<S2SV_blank>%u-byte<S2SV_blank>packet,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>maximum<S2SV_blank>of<S2SV_blank>%u\" , pkt_len , WTAP_MAX_PACKET_SIZE ) ; return FALSE ; } phdr -> ts . secs = sec ; phdr -> ts . nsecs = dsec * 100000000 ; phdr -> len = pkt_len ; ws_buffer_assure_space ( buf , pkt_len ) ; pd = ws_buffer_start_ptr ( buf ) ; while ( 1 ) { if ( file_gets ( line , NETSCREEN_LINE_LENGTH , fh ) == NULL ) { break ; } for ( p = & line [ 0 ] ; g_ascii_isspace ( * p ) ; p ++ ) ; if ( * p == '\\\\0' ) { break ; } n = parse_single_hex_dump_line ( p , pd , offset ) ; if ( offset == 0 && n < 6 ) { if ( info_line ( line ) ) { if ( ++ i <= NETSCREEN_MAX_INFOLINES ) { continue ; } } else { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>cannot<S2SV_blank>parse<S2SV_blank>hex-data\" ) ; return FALSE ; } } if ( n == - 1 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>cannot<S2SV_blank>parse<S2SV_blank>hex-data\" ) ; return FALSE ; } offset += n ; if ( offset > pkt_len ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>too<S2SV_blank>much<S2SV_blank>hex-data\" ) ; return FALSE ; } } if ( strncmp ( cap_int , \"adsl\" , 4 ) == 0 ) { g_snprintf ( dststr , 13 , \"%02x%02x%02x%02x%02x%02x\" , pd [ 0 ] , pd [ 1 ] , pd [ 2 ] , pd [ 3 ] , pd [ 4 ] , pd [ 5 ] ) ; if ( strncmp ( dststr , cap_dst , 12 ) == 0 ) phdr -> pkt_encap = WTAP_ENCAP_ETHERNET ; else phdr -> pkt_encap = WTAP_ENCAP_PPP ; } else if ( strncmp ( cap_int , \"seri\" , 4 ) == 0 ) phdr -> pkt_encap = WTAP_ENCAP_PPP ; else phdr -> pkt_encap = WTAP_ENCAP_ETHERNET ; phdr -> caplen = offset ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { int pkt_len ; int <S2SV_ModStart> 2 ] ; <S2SV_ModEnd> char cap_src [ <S2SV_ModStart> = 0 ; int <S2SV_ModEnd> offset = 0 <S2SV_ModStart> ( line , \"%9d.%9d:<S2SV_blank>%15[a-z0-9/:.-](%1[io])<S2SV_blank>len=%9d:%12s->%12s/\" <S2SV_ModEnd> , & sec <S2SV_ModStart> return - 1 ; } if ( pkt_len < 0 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"netscreen:<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>has<S2SV_blank>a<S2SV_blank>negative<S2SV_blank>packet<S2SV_blank>length\" ) ; return FALSE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18216\n\n```\nCWE-476 static ssize_t o2nm_node_ipv4_address_store ( struct config_item * item , const char * page , size_t count ) { struct o2nm_node * node = to_o2nm_node ( item ) ; <S2SV_StartBug> struct o2nm_cluster * cluster = to_o2nm_cluster_from_node ( node ) ; <S2SV_EndBug> int ret , i ; struct rb_node * * p , * parent ; unsigned int octets [ 4 ] ; __be32 ipv4_addr = 0 ; ret = sscanf ( page , \"%3u.%3u.%3u.%3u\" , & octets [ 3 ] , & octets [ 2 ] , & octets [ 1 ] , & octets [ 0 ] ) ; if ( ret != 4 ) return - EINVAL ; for ( i = 0 ; i < ARRAY_SIZE ( octets ) ; i ++ ) { if ( octets [ i ] > 255 ) return - ERANGE ; be32_add_cpu ( & ipv4_addr , octets [ i ] << ( i * 8 ) ) ; } <S2SV_StartBug> ret = 0 ; <S2SV_EndBug> write_lock ( & cluster -> cl_nodes_lock ) ; if ( o2nm_node_ip_tree_lookup ( cluster , ipv4_addr , & p , & parent ) ) ret = - EEXIST ; else if ( test_and_set_bit ( O2NM_NODE_ATTR_ADDRESS , & node -> nd_set_attributes ) ) ret = - EBUSY ; else { rb_link_node ( & node -> nd_ip_node , parent , p ) ; rb_insert_color ( & node -> nd_ip_node , & cluster -> cl_node_ip_tree ) ; } write_unlock ( & cluster -> cl_nodes_lock ) ; <S2SV_StartBug> if ( ret ) <S2SV_EndBug> return ret ; memcpy ( & node -> nd_ipv4_address , & ipv4_addr , sizeof ( ipv4_addr ) ) ; return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o2nm_cluster * cluster <S2SV_ModEnd> ; int ret <S2SV_ModStart> ) ; } o2nm_lock_subsystem ( ) ; cluster = to_o2nm_cluster_from_node ( node ) ; if ( ! cluster ) { o2nm_unlock_subsystem ( ) ; return - EINVAL ; } <S2SV_ModStart> cl_nodes_lock ) ; o2nm_unlock_subsystem ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8064\n\n```\nCWE-119 void dvb_usbv2_disconnect ( struct usb_interface * intf ) { struct dvb_usb_device * d = usb_get_intfdata ( intf ) ; <S2SV_StartBug> const char * name = d -> name ; <S2SV_EndBug> <S2SV_StartBug> struct device dev = d -> udev -> dev ; <S2SV_EndBug> dev_dbg ( & d -> udev -> dev , \"%s:<S2SV_blank>bInterfaceNumber=%d\\\\n\" , __func__ , intf -> cur_altsetting -> desc . bInterfaceNumber ) ; if ( d -> props -> exit ) d -> props -> exit ( d ) ; dvb_usbv2_exit ( d ) ; <S2SV_StartBug> dev_info ( & dev , \"%s:<S2SV_blank>\\'%s\\'<S2SV_blank>successfully<S2SV_blank>deinitialized<S2SV_blank>and<S2SV_blank>disconnected\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> KBUILD_MODNAME , name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const char * devname = kstrdup ( dev_name ( & <S2SV_ModEnd> d -> udev <S2SV_ModStart> udev -> dev ) , GFP_KERNEL ) ; const char * drvname = d -> name <S2SV_ModStart> d ) ; pr_info ( \"%s:<S2SV_blank>\\'%s:%s\\'<S2SV_blank>successfully<S2SV_blank>deinitialized<S2SV_blank>and<S2SV_blank>disconnected\\\\n\" <S2SV_ModEnd> , KBUILD_MODNAME , <S2SV_ModStart> , KBUILD_MODNAME , drvname , devname ) ; kfree ( devname <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4580\n\n```\nCWE-200 int x25_negotiate_facilities ( struct sk_buff * skb , struct sock * sk , struct x25_facilities * new , struct x25_dte_facilities * dte ) { struct x25_sock * x25 = x25_sk ( sk ) ; struct x25_facilities * ours = & x25 -> facilities ; struct x25_facilities theirs ; int len ; memset ( & theirs , 0 , sizeof ( theirs ) ) ; <S2SV_StartBug> memcpy ( new , ours , sizeof ( * new ) ) ; <S2SV_EndBug> len = x25_parse_facilities ( skb , & theirs , dte , & x25 -> vc_facil_mask ) ; if ( len < 0 ) return len ; if ( ( theirs . reverse & 0x01 ) && ( ours -> reverse & 0x01 ) ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>rejecting<S2SV_blank>reverse<S2SV_blank>charging<S2SV_blank>request\\\\n\" ) ; return - 1 ; } new -> reverse = theirs . reverse ; if ( theirs . throughput ) { int theirs_in = theirs . throughput & 0x0f ; int theirs_out = theirs . throughput & 0xf0 ; int ours_in = ours -> throughput & 0x0f ; int ours_out = ours -> throughput & 0xf0 ; if ( ! ours_in || theirs_in < ours_in ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>inbound<S2SV_blank>throughput<S2SV_blank>negotiated\\\\n\" ) ; new -> throughput = ( new -> throughput & 0xf0 ) | theirs_in ; } if ( ! ours_out || theirs_out < ours_out ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>outbound<S2SV_blank>throughput<S2SV_blank>negotiated\\\\n\" ) ; new -> throughput = ( new -> throughput & 0x0f ) | theirs_out ; } } if ( theirs . pacsize_in && theirs . pacsize_out ) { if ( theirs . pacsize_in < ours -> pacsize_in ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>packet<S2SV_blank>size<S2SV_blank>inwards<S2SV_blank>negotiated<S2SV_blank>down\\\\n\" ) ; new -> pacsize_in = theirs . pacsize_in ; } if ( theirs . pacsize_out < ours -> pacsize_out ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>packet<S2SV_blank>size<S2SV_blank>outwards<S2SV_blank>negotiated<S2SV_blank>down\\\\n\" ) ; new -> pacsize_out = theirs . pacsize_out ; } } if ( theirs . winsize_in && theirs . winsize_out ) { if ( theirs . winsize_in < ours -> winsize_in ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>window<S2SV_blank>size<S2SV_blank>inwards<S2SV_blank>negotiated<S2SV_blank>down\\\\n\" ) ; new -> winsize_in = theirs . winsize_in ; } if ( theirs . winsize_out < ours -> winsize_out ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>window<S2SV_blank>size<S2SV_blank>outwards<S2SV_blank>negotiated<S2SV_blank>down\\\\n\" ) ; new -> winsize_out = theirs . winsize_out ; } } return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( * new ) ) ; memset ( dte , 0 , sizeof ( * dte\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16161\n\n```\nCWE-476 static int fetch_token ( OnigToken * tok , UChar * * src , UChar * end , ScanEnv * env ) { int r , num ; OnigCodePoint c ; OnigEncoding enc = env -> enc ; const OnigSyntaxType * syn = env -> syntax ; UChar * prev ; UChar * p = * src ; PFETCH_READY ; start : if ( PEND ) { tok -> type = TK_EOT ; return tok -> type ; } tok -> type = TK_STRING ; tok -> base = 0 ; tok -> backp = p ; PFETCH ( c ) ; if ( IS_MC_ESC_CODE ( c , syn ) ) { if ( PEND ) return ONIGERR_END_PATTERN_AT_ESCAPE ; tok -> backp = p ; PFETCH ( c ) ; tok -> u . c = c ; tok -> escaped = 1 ; switch ( c ) { case '*' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_ASTERISK_ZERO_INF ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '+' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_PLUS_ONE_INF ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 1 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '?' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_QMARK_ZERO_ONE ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = 1 ; greedy_check : if ( ! PEND && PPEEK_IS ( '?' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_QMARK_NON_GREEDY ) ) { PFETCH ( c ) ; tok -> u . repeat . greedy = 0 ; tok -> u . repeat . possessive = 0 ; } else { possessive_check : if ( ! PEND && PPEEK_IS ( '+' ) && ( ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_PLUS_POSSESSIVE_REPEAT ) && tok -> type != TK_INTERVAL ) || ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_PLUS_POSSESSIVE_INTERVAL ) && tok -> type == TK_INTERVAL ) ) ) { PFETCH ( c ) ; tok -> u . repeat . greedy = 1 ; tok -> u . repeat . possessive = 1 ; } else { tok -> u . repeat . greedy = 1 ; tok -> u . repeat . possessive = 0 ; } } break ; case '{' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_BRACE_INTERVAL ) ) break ; r = fetch_range_quantifier ( & p , end , tok , env ) ; if ( r < 0 ) return r ; if ( r == 0 ) goto greedy_check ; else if ( r == 2 ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY ) ) goto possessive_check ; goto greedy_check ; } break ; case '|' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_VBAR_ALT ) ) break ; tok -> type = TK_ALT ; break ; case '(' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_OPEN ; break ; case ')' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_CLOSE ; break ; case 'w' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_W_WORD ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 0 ; break ; case 'W' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_W_WORD ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 1 ; break ; case 'b' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_B_WORD_BOUND ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ANCHOR_WORD_BOUND ; tok -> u . anchor . ascii_range = IS_ASCII_RANGE ( env -> option ) && ! IS_WORD_BOUND_ALL_RANGE ( env -> option ) ; break ; case 'B' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_B_WORD_BOUND ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ANCHOR_NOT_WORD_BOUND ; tok -> u . anchor . ascii_range = IS_ASCII_RANGE ( env -> option ) && ! IS_WORD_BOUND_ALL_RANGE ( env -> option ) ; break ; # ifdef USE_WORD_BEGIN_END case '<' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ANCHOR_WORD_BEGIN ; tok -> u . anchor . ascii_range = IS_ASCII_RANGE ( env -> option ) ; break ; case '>' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ANCHOR_WORD_END ; tok -> u . anchor . ascii_range = IS_ASCII_RANGE ( env -> option ) ; break ; # endif case 's' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_S_WHITE_SPACE ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 0 ; break ; case 'S' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_S_WHITE_SPACE ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 1 ; break ; case 'd' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_D_DIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 0 ; break ; case 'D' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_D_DIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 1 ; break ; case 'h' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 0 ; break ; case 'H' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 1 ; break ; case 'A' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; begin_buf : tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ANCHOR_BEGIN_BUF ; break ; case 'Z' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ANCHOR_SEMI_END_BUF ; break ; case 'z' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; end_buf : tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ANCHOR_END_BUF ; break ; case 'G' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_CAPITAL_G_BEGIN_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ANCHOR_BEGIN_POSITION ; break ; case '`' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR ) ) break ; goto begin_buf ; break ; case '\\\\'' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR ) ) break ; goto end_buf ; break ; case 'x' : if ( PEND ) break ; prev = p ; if ( PPEEK_IS ( '{' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_BRACE_HEX8 ) ) { PINC ; num = scan_unsigned_hexadecimal_number ( & p , end , 0 , 8 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE ; if ( ! PEND ) { if ( ONIGENC_IS_CODE_XDIGIT ( enc , PPEEK ) ) return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE ; } if ( ( p > prev + enclen ( enc , prev , end ) ) && ! PEND && PPEEK_IS ( '}' ) ) { PINC ; tok -> type = TK_CODE_POINT ; tok -> u . code = ( OnigCodePoint ) num ; } else { p = prev ; } } else if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_HEX2 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 0 , 2 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 16 ; tok -> u . c = num ; } break ; case 'u' : if ( PEND ) break ; prev = p ; if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_U_HEX4 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 4 , 4 , enc ) ; if ( num < - 1 ) return ONIGERR_TOO_SHORT_DIGITS ; else if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_CODE_POINT ; tok -> base = 16 ; tok -> u . code = ( OnigCodePoint ) num ; } break ; case 'o' : if ( PEND ) break ; prev = p ; if ( PPEEK_IS ( '{' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_O_BRACE_OCTAL ) ) { PINC ; num = scan_unsigned_octal_number ( & p , end , 11 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE ; if ( ! PEND ) { OnigCodePoint c = PPEEK ; if ( ONIGENC_IS_CODE_DIGIT ( enc , c ) && c < '8' ) return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE ; } if ( ( p > prev + enclen ( enc , prev , end ) ) && ! PEND && PPEEK_IS ( '}' ) ) { PINC ; tok -> type = TK_CODE_POINT ; tok -> u . code = ( OnigCodePoint ) num ; } else { p = prev ; } } break ; case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : PUNFETCH ; prev = p ; num = onig_scan_unsigned_number ( & p , end , enc ) ; if ( num < 0 || num > ONIG_MAX_BACKREF_NUM ) { goto skip_backref ; } if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_DECIMAL_BACKREF ) && ( num <= env -> num_mem || num <= 9 ) ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_STRICT_CHECK_BACKREF ) ) { if ( num > env -> num_mem || IS_NULL ( SCANENV_MEM_NODES ( env ) [ num ] ) ) return ONIGERR_INVALID_BACKREF ; } tok -> type = TK_BACKREF ; tok -> u . backref . num = 1 ; tok -> u . backref . ref1 = num ; tok -> u . backref . by_name = 0 ; # ifdef USE_BACKREF_WITH_LEVEL tok -> u . backref . exist_level = 0 ; # endif break ; } skip_backref : if ( c == '8' || c == '9' ) { p = prev ; PINC ; break ; } p = prev ; case '0' : if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_OCTAL3 ) ) { prev = p ; num = scan_unsigned_octal_number ( & p , end , ( c == '0' ? 2 : 3 ) , enc ) ; if ( num < 0 || 0xff < num ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 8 ; tok -> u . c = num ; } else if ( c != '0' ) { PINC ; } break ; # ifdef USE_NAMED_GROUP case 'k' : if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_K_NAMED_BACKREF ) ) { PFETCH ( c ) ; if ( c == '<' || c == '\\\\'' ) { r = fetch_named_backref_token ( c , tok , & p , end , env ) ; if ( r < 0 ) return r ; } else { PUNFETCH ; onig_syntax_warn ( env , \"invalid<S2SV_blank>back<S2SV_blank>reference\" ) ; } } break ; # endif # if defined ( USE_SUBEXP_CALL ) || defined ( USE_NAMED_GROUP ) case 'g' : # ifdef USE_NAMED_GROUP if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_G_BRACE_BACKREF ) ) { PFETCH ( c ) ; if ( c == '{' ) { r = fetch_named_backref_token ( c , tok , & p , end , env ) ; if ( r < 0 ) return r ; } else PUNFETCH ; } # endif # ifdef USE_SUBEXP_CALL if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_G_SUBEXP_CALL ) ) { PFETCH ( c ) ; if ( c == '<' || c == '\\\\'' ) { int gnum = - 1 , rel = 0 ; UChar * name_end ; OnigCodePoint cnext ; cnext = PPEEK ; if ( cnext == '0' ) { PINC ; if ( PPEEK_IS ( get_name_end_code_point ( c ) ) ) { PINC ; name_end = p ; gnum = 0 ; } } else if ( cnext == '+' ) { PINC ; rel = 1 ; } prev = p ; if ( gnum < 0 ) { r = fetch_name ( ( OnigCodePoint ) c , & p , end , & name_end , env , & gnum , 1 ) ; if ( r < 0 ) return r ; } tok -> type = TK_CALL ; tok -> u . call . name = prev ; tok -> u . call . name_end = name_end ; tok -> u . call . gnum = gnum ; tok -> u . call . rel = rel ; } else { onig_syntax_warn ( env , \"invalid<S2SV_blank>subexp<S2SV_blank>call\" ) ; PUNFETCH ; } } # endif break ; # endif case 'Q' : if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_CAPITAL_Q_QUOTE ) ) { tok -> type = TK_QUOTE_OPEN ; } break ; case 'p' : case 'P' : if ( PPEEK_IS ( '{' ) && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY ) ) { PINC ; tok -> type = TK_CHAR_PROPERTY ; tok -> u . prop . not = ( c == 'P' ? 1 : 0 ) ; if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT ) ) { PFETCH ( c ) ; if ( c == '^' ) { tok -> u . prop . not = ( tok -> u . prop . not == 0 ? 1 : 0 ) ; } else PUNFETCH ; } } else { onig_syntax_warn ( env , \"invalid<S2SV_blank>Unicode<S2SV_blank>Property<S2SV_blank>\\\\\\\\%c\" , c ) ; } break ; case 'R' : if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_CAPITAL_R_LINEBREAK ) ) { tok -> type = TK_LINEBREAK ; } break ; case 'X' : if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_CAPITAL_X_EXTENDED_GRAPHEME_CLUSTER ) ) { tok -> type = TK_EXTENDED_GRAPHEME_CLUSTER ; } break ; case 'K' : if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_CAPITAL_K_KEEP ) ) { tok -> type = TK_KEEP ; } break ; default : { OnigCodePoint c2 ; PUNFETCH ; num = fetch_escaped_value ( & p , end , env , & c2 ) ; if ( num < 0 ) return num ; if ( ( OnigCodePoint ) tok -> u . c != c2 ) { tok -> type = TK_CODE_POINT ; tok -> u . code = ( OnigCodePoint ) c2 ; } else { p = tok -> backp + enclen ( enc , tok -> backp , end ) ; } } break ; } } else { tok -> u . c = c ; tok -> escaped = 0 ; # ifdef USE_VARIABLE_META_CHARS if ( ( c != ONIG_INEFFECTIVE_META_CHAR ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_VARIABLE_META_CHARACTERS ) ) { if ( c == MC_ANYCHAR ( syn ) ) goto any_char ; else if ( c == MC_ANYTIME ( syn ) ) goto anytime ; else if ( c == MC_ZERO_OR_ONE_TIME ( syn ) ) goto zero_or_one_time ; else if ( c == MC_ONE_OR_MORE_TIME ( syn ) ) goto one_or_more_time ; else if ( c == MC_ANYCHAR_ANYTIME ( syn ) ) { tok -> type = TK_ANYCHAR_ANYTIME ; goto out ; } } # endif switch ( c ) { case '.' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_DOT_ANYCHAR ) ) break ; # ifdef USE_VARIABLE_META_CHARS any_char : # endif tok -> type = TK_ANYCHAR ; break ; case '*' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ASTERISK_ZERO_INF ) ) break ; # ifdef USE_VARIABLE_META_CHARS anytime : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '+' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_PLUS_ONE_INF ) ) break ; # ifdef USE_VARIABLE_META_CHARS one_or_more_time : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 1 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '?' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_QMARK_ZERO_ONE ) ) break ; # ifdef USE_VARIABLE_META_CHARS zero_or_one_time : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = 1 ; goto greedy_check ; break ; case '{' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_BRACE_INTERVAL ) ) break ; r = fetch_range_quantifier ( & p , end , tok , env ) ; if ( r < 0 ) return r ; if ( r == 0 ) goto greedy_check ; else if ( r == 2 ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY ) ) goto possessive_check ; goto greedy_check ; } break ; case '|' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_VBAR_ALT ) ) break ; tok -> type = TK_ALT ; break ; case '(' : if ( PPEEK_IS ( '?' ) && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_QMARK_GROUP_EFFECT ) ) { PINC ; if ( PPEEK_IS ( '#' ) ) { PFETCH ( c ) ; while ( 1 ) { if ( PEND ) return ONIGERR_END_PATTERN_IN_GROUP ; PFETCH ( c ) ; if ( c == MC_ESC ( syn ) ) { if ( ! PEND ) PFETCH ( c ) ; } else { if ( c == ')' ) break ; } } goto start ; } # ifdef USE_PERL_SUBEXP_CALL c = PPEEK ; if ( ( c == '&' || c == 'R' || ONIGENC_IS_CODE_DIGIT ( enc , c ) ) && IS_SYNTAX_OP2 ( env -> syntax , ONIG_SYN_OP2_QMARK_SUBEXP_CALL ) ) { int gnum ; UChar * name ; UChar * name_end ; if ( c == 'R' || c == '0' ) { PINC ; <S2SV_StartBug> if ( ! PPEEK_IS ( ')' ) ) return ONIGERR_INVALID_GROUP_NAME ; <S2SV_EndBug> PINC ; name_end = name = p ; gnum = 0 ; } else { int numref = 1 ; if ( c == '&' ) { PINC ; numref = 0 ; } name = p ; r = fetch_name ( ( OnigCodePoint ) '(' , & p , end , & name_end , env , & gnum , numref ) ; if ( r < 0 ) return r ; } tok -> type = TK_CALL ; tok -> u . call . name = name ; tok -> u . call . name_end = name_end ; tok -> u . call . gnum = gnum ; tok -> u . call . rel = 0 ; break ; } else if ( ( c == '-' || c == '+' ) && IS_SYNTAX_OP2 ( env -> syntax , ONIG_SYN_OP2_QMARK_SUBEXP_CALL ) ) { int gnum ; UChar * name ; UChar * name_end ; OnigCodePoint cnext ; PFETCH_READY ; PINC ; cnext = PPEEK ; if ( ONIGENC_IS_CODE_DIGIT ( enc , cnext ) ) { if ( c == '-' ) PUNFETCH ; name = p ; r = fetch_name ( ( OnigCodePoint ) '(' , & p , end , & name_end , env , & gnum , 1 ) ; if ( r < 0 ) return r ; tok -> type = TK_CALL ; tok -> u . call . name = name ; tok -> u . call . name_end = name_end ; tok -> u . call . gnum = gnum ; tok -> u . call . rel = 1 ; break ; } } # endif # ifdef USE_CAPITAL_P_NAMED_GROUP if ( PPEEK_IS ( 'P' ) && IS_SYNTAX_OP2 ( env -> syntax , ONIG_SYN_OP2_QMARK_CAPITAL_P_NAMED_GROUP ) ) { int gnum ; UChar * name ; UChar * name_end ; PFETCH_READY ; PINC ; if ( PEND ) return ONIGERR_UNDEFINED_GROUP_OPTION ; PFETCH ( c ) ; if ( c == '=' ) { r = fetch_named_backref_token ( ( OnigCodePoint ) '(' , tok , & p , end , env ) ; if ( r < 0 ) return r ; break ; } else if ( c == '>' ) { name = p ; r = fetch_name ( ( OnigCodePoint ) '(' , & p , end , & name_end , env , & gnum , 0 ) ; if ( r < 0 ) return r ; tok -> type = TK_CALL ; tok -> u . call . name = name ; tok -> u . call . name_end = name_end ; tok -> u . call . gnum = gnum ; tok -> u . call . rel = 0 ; break ; } } # endif PUNFETCH ; } if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_OPEN ; break ; case ')' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_CLOSE ; break ; case '^' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LINE_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ( IS_SINGLELINE ( env -> option ) ? ANCHOR_BEGIN_BUF : ANCHOR_BEGIN_LINE ) ; break ; case '$' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LINE_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor . subtype = ( IS_SINGLELINE ( env -> option ) ? ANCHOR_SEMI_END_BUF : ANCHOR_END_LINE ) ; break ; case '[' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_BRACKET_CC ) ) break ; tok -> type = TK_CC_OPEN ; break ; case ']' : if ( * src > env -> pattern ) CLOSE_BRACKET_WITHOUT_ESC_WARN ( env , ( UChar * ) \"]\" ) ; break ; case '#' : if ( IS_EXTEND ( env -> option ) ) { while ( ! PEND ) { PFETCH ( c ) ; if ( ONIGENC_IS_CODE_NEWLINE ( enc , c ) ) break ; } goto start ; break ; } break ; case '<S2SV_blank>' : case '\\\\t' : case '\\\\n' : case '\\\\r' : case '\\\\f' : if ( IS_EXTEND ( env -> option ) ) goto start ; break ; default : break ; } } # ifdef USE_VARIABLE_META_CHARS out : # endif * src = p ; return tok -> type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ')' ) ) { r = ONIGERR_INVALID_GROUP_NAME ; onig_scan_env_set_error_string ( env , r , p - 1 , p + 1 ) ; return r ; } <S2SV_ModEnd> PINC ; name_end\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_adapt_mode_probs ( VP9_COMMON * cm ) { int i , j ; <S2SV_StartBug> FRAME_CONTEXT * fc = & cm -> fc ; <S2SV_EndBug> const FRAME_CONTEXT * pre_fc = & cm -> frame_contexts [ cm -> frame_context_idx ] ; const FRAME_COUNTS * counts = & cm -> counts ; for ( i = 0 ; i < INTRA_INTER_CONTEXTS ; i ++ ) <S2SV_StartBug> fc -> intra_inter_prob [ i ] = adapt_prob ( pre_fc -> intra_inter_prob [ i ] , <S2SV_EndBug> counts -> intra_inter [ i ] ) ; for ( i = 0 ; i < COMP_INTER_CONTEXTS ; i ++ ) <S2SV_StartBug> fc -> comp_inter_prob [ i ] = adapt_prob ( pre_fc -> comp_inter_prob [ i ] , <S2SV_EndBug> counts -> comp_inter [ i ] ) ; for ( i = 0 ; i < REF_CONTEXTS ; i ++ ) <S2SV_StartBug> fc -> comp_ref_prob [ i ] = adapt_prob ( pre_fc -> comp_ref_prob [ i ] , <S2SV_EndBug> counts -> comp_ref [ i ] ) ; for ( i = 0 ; i < REF_CONTEXTS ; i ++ ) for ( j = 0 ; j < 2 ; j ++ ) <S2SV_StartBug> fc -> single_ref_prob [ i ] [ j ] = adapt_prob ( pre_fc -> single_ref_prob [ i ] [ j ] , <S2SV_EndBug> counts -> single_ref [ i ] [ j ] ) ; for ( i = 0 ; i < INTER_MODE_CONTEXTS ; i ++ ) <S2SV_StartBug> adapt_probs ( vp9_inter_mode_tree , pre_fc -> inter_mode_probs [ i ] , <S2SV_EndBug> counts -> inter_mode [ i ] , fc -> inter_mode_probs [ i ] ) ; for ( i = 0 ; i < BLOCK_SIZE_GROUPS ; i ++ ) <S2SV_StartBug> adapt_probs ( vp9_intra_mode_tree , pre_fc -> y_mode_prob [ i ] , <S2SV_EndBug> counts -> y_mode [ i ] , fc -> y_mode_prob [ i ] ) ; for ( i = 0 ; i < INTRA_MODES ; ++ i ) <S2SV_StartBug> adapt_probs ( vp9_intra_mode_tree , pre_fc -> uv_mode_prob [ i ] , <S2SV_EndBug> counts -> uv_mode [ i ] , fc -> uv_mode_prob [ i ] ) ; for ( i = 0 ; i < PARTITION_CONTEXTS ; i ++ ) <S2SV_StartBug> adapt_probs ( vp9_partition_tree , pre_fc -> partition_prob [ i ] , <S2SV_EndBug> counts -> partition [ i ] , fc -> partition_prob [ i ] ) ; if ( cm -> interp_filter == SWITCHABLE ) { for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) <S2SV_StartBug> adapt_probs ( vp9_switchable_interp_tree , pre_fc -> switchable_interp_prob [ i ] , <S2SV_EndBug> counts -> switchable_interp [ i ] , fc -> switchable_interp_prob [ i ] ) ; } if ( cm -> tx_mode == TX_MODE_SELECT ) { int j ; unsigned int branch_ct_8x8p [ TX_SIZES - 3 ] [ 2 ] ; unsigned int branch_ct_16x16p [ TX_SIZES - 2 ] [ 2 ] ; unsigned int branch_ct_32x32p [ TX_SIZES - 1 ] [ 2 ] ; for ( i = 0 ; i < TX_SIZE_CONTEXTS ; ++ i ) { tx_counts_to_branch_counts_8x8 ( counts -> tx . p8x8 [ i ] , branch_ct_8x8p ) ; for ( j = 0 ; j < TX_SIZES - 3 ; ++ j ) <S2SV_StartBug> fc -> tx_probs . p8x8 [ i ] [ j ] = adapt_prob ( pre_fc -> tx_probs . p8x8 [ i ] [ j ] , <S2SV_EndBug> branch_ct_8x8p [ j ] ) ; tx_counts_to_branch_counts_16x16 ( counts -> tx . p16x16 [ i ] , branch_ct_16x16p ) ; for ( j = 0 ; j < TX_SIZES - 2 ; ++ j ) <S2SV_StartBug> fc -> tx_probs . p16x16 [ i ] [ j ] = adapt_prob ( pre_fc -> tx_probs . p16x16 [ i ] [ j ] , <S2SV_EndBug> branch_ct_16x16p [ j ] ) ; tx_counts_to_branch_counts_32x32 ( counts -> tx . p32x32 [ i ] , branch_ct_32x32p ) ; for ( j = 0 ; j < TX_SIZES - 1 ; ++ j ) <S2SV_StartBug> fc -> tx_probs . p32x32 [ i ] [ j ] = adapt_prob ( pre_fc -> tx_probs . p32x32 [ i ] [ j ] , <S2SV_EndBug> branch_ct_32x32p [ j ] ) ; } } for ( i = 0 ; i < SKIP_CONTEXTS ; ++ i ) <S2SV_StartBug> fc -> skip_probs [ i ] = adapt_prob ( pre_fc -> skip_probs [ i ] , counts -> skip [ i ] ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * fc = <S2SV_ModEnd> cm -> fc <S2SV_ModStart> i ] = mode_mv_merge_probs <S2SV_ModEnd> ( pre_fc -> <S2SV_ModStart> i ] = mode_mv_merge_probs <S2SV_ModEnd> ( pre_fc -> <S2SV_ModStart> i ] = mode_mv_merge_probs <S2SV_ModEnd> ( pre_fc -> <S2SV_ModStart> j ] = mode_mv_merge_probs ( <S2SV_ModEnd> pre_fc -> single_ref_prob <S2SV_ModStart> i ++ ) vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_inter_mode_tree , <S2SV_ModStart> i ++ ) vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_intra_mode_tree , <S2SV_ModStart> ++ i ) vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_intra_mode_tree , <S2SV_ModStart> i ++ ) vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_partition_tree , <S2SV_ModStart> i ++ ) vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_switchable_interp_tree , <S2SV_ModStart> j ] = mode_mv_merge_probs ( <S2SV_ModEnd> pre_fc -> tx_probs <S2SV_ModStart> j ] = mode_mv_merge_probs ( <S2SV_ModEnd> pre_fc -> tx_probs <S2SV_ModStart> j ] = mode_mv_merge_probs ( <S2SV_ModEnd> pre_fc -> tx_probs <S2SV_ModStart> i ] = mode_mv_merge_probs ( <S2SV_ModEnd> pre_fc -> skip_probs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static noinline void key_gc_unused_keys ( struct list_head * keys ) { while ( ! list_empty ( keys ) ) { struct key * key = list_entry ( keys -> next , struct key , graveyard_link ) ; <S2SV_StartBug> list_del ( & key -> graveyard_link ) ; <S2SV_EndBug> kdebug ( \"-<S2SV_blank>%u\" , key -> serial ) ; key_check ( key ) ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) && <S2SV_EndBug> ! test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) && key -> type -> destroy ) key -> type -> destroy ( key ) ; security_key_free ( key ) ; if ( test_bit ( KEY_FLAG_IN_QUOTA , & key -> flags ) ) { spin_lock ( & key -> user -> lock ) ; key -> user -> qnkeys -- ; key -> user -> qnbytes -= key -> quotalen ; spin_unlock ( & key -> user -> lock ) ; } atomic_dec ( & key -> user -> nkeys ) ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) <S2SV_EndBug> atomic_dec ( & key -> user -> nikeys ) ; key_user_put ( key -> user ) ; kfree ( key -> description ) ; memzero_explicit ( key , sizeof ( * key ) ) ; kmem_cache_free ( key_jar , key ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> graveyard_link ) ; short state = key -> state ; <S2SV_ModStart> ; if ( state == KEY_IS_POSITIVE && <S2SV_ModEnd> key -> type <S2SV_ModStart> ; if ( state != KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) atomic_dec (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4656\n\n```\nCWE-189 static bool snd_ctl_remove_numid_conflict ( struct snd_card * card , unsigned int count ) { <S2SV_StartBug> struct snd_kcontrol * kctl ; <S2SV_EndBug> list_for_each_entry ( kctl , & card -> controls , list ) { if ( kctl -> id . numid < card -> last_numid + 1 + count && kctl -> id . numid + kctl -> count > card -> last_numid + 1 ) { card -> last_numid = kctl -> id . numid + kctl -> count - 1 ; return true ; } } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snd_kcontrol * kctl ; if ( card -> last_numid >= UINT_MAX - count ) card -> last_numid = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 static int kvm_guest_time_update ( struct kvm_vcpu * v ) { unsigned long flags , this_tsc_khz ; struct kvm_vcpu_arch * vcpu = & v -> arch ; struct kvm_arch * ka = & v -> kvm -> arch ; <S2SV_StartBug> void * shared_kaddr ; <S2SV_EndBug> s64 kernel_ns , max_kernel_ns ; u64 tsc_timestamp , host_tsc ; <S2SV_StartBug> struct pvclock_vcpu_time_info * guest_hv_clock ; <S2SV_EndBug> u8 pvclock_flags ; bool use_master_clock ; kernel_ns = 0 ; host_tsc = 0 ; spin_lock ( & ka -> pvclock_gtod_sync_lock ) ; use_master_clock = ka -> use_master_clock ; if ( use_master_clock ) { host_tsc = ka -> master_cycle_now ; kernel_ns = ka -> master_kernel_ns ; } spin_unlock ( & ka -> pvclock_gtod_sync_lock ) ; local_irq_save ( flags ) ; this_tsc_khz = __get_cpu_var ( cpu_tsc_khz ) ; if ( unlikely ( this_tsc_khz == 0 ) ) { local_irq_restore ( flags ) ; kvm_make_request ( KVM_REQ_CLOCK_UPDATE , v ) ; return 1 ; } if ( ! use_master_clock ) { host_tsc = native_read_tsc ( ) ; kernel_ns = get_kernel_ns ( ) ; } tsc_timestamp = kvm_x86_ops -> read_l1_tsc ( v , host_tsc ) ; if ( vcpu -> tsc_catchup ) { u64 tsc = compute_guest_tsc ( v , kernel_ns ) ; if ( tsc > tsc_timestamp ) { adjust_tsc_offset_guest ( v , tsc - tsc_timestamp ) ; tsc_timestamp = tsc ; } } local_irq_restore ( flags ) ; <S2SV_StartBug> if ( ! vcpu -> time_page ) <S2SV_EndBug> return 0 ; max_kernel_ns = 0 ; if ( vcpu -> hv_clock . tsc_timestamp ) { max_kernel_ns = vcpu -> last_guest_tsc - vcpu -> hv_clock . tsc_timestamp ; max_kernel_ns = pvclock_scale_delta ( max_kernel_ns , vcpu -> hv_clock . tsc_to_system_mul , vcpu -> hv_clock . tsc_shift ) ; max_kernel_ns += vcpu -> last_kernel_ns ; } if ( unlikely ( vcpu -> hw_tsc_khz != this_tsc_khz ) ) { kvm_get_time_scale ( NSEC_PER_SEC / 1000 , this_tsc_khz , & vcpu -> hv_clock . tsc_shift , & vcpu -> hv_clock . tsc_to_system_mul ) ; vcpu -> hw_tsc_khz = this_tsc_khz ; } if ( ! use_master_clock ) { if ( max_kernel_ns > kernel_ns ) kernel_ns = max_kernel_ns ; } vcpu -> hv_clock . tsc_timestamp = tsc_timestamp ; vcpu -> hv_clock . system_time = kernel_ns + v -> kvm -> arch . kvmclock_offset ; vcpu -> last_kernel_ns = kernel_ns ; vcpu -> last_guest_tsc = tsc_timestamp ; vcpu -> hv_clock . version += 2 ; <S2SV_StartBug> shared_kaddr = kmap_atomic ( vcpu -> time_page ) ; <S2SV_EndBug> guest_hv_clock = shared_kaddr + vcpu -> time_offset ; <S2SV_StartBug> pvclock_flags = ( guest_hv_clock -> flags & PVCLOCK_GUEST_STOPPED ) ; <S2SV_EndBug> if ( vcpu -> pvclock_set_guest_stopped_request ) { pvclock_flags |= PVCLOCK_GUEST_STOPPED ; vcpu -> pvclock_set_guest_stopped_request = false ; } if ( use_master_clock ) pvclock_flags |= PVCLOCK_TSC_STABLE_BIT ; vcpu -> hv_clock . flags = pvclock_flags ; <S2SV_StartBug> memcpy ( shared_kaddr + vcpu -> time_offset , & vcpu -> hv_clock , <S2SV_EndBug> sizeof ( vcpu -> hv_clock ) ) ; <S2SV_StartBug> kunmap_atomic ( shared_kaddr ) ; <S2SV_EndBug> mark_page_dirty ( v -> kvm , vcpu -> time >> PAGE_SHIFT ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> arch ; <S2SV_ModEnd> s64 kernel_ns , <S2SV_ModStart> ; struct pvclock_vcpu_time_info <S2SV_ModEnd> guest_hv_clock ; u8 <S2SV_ModStart> ! vcpu -> pv_time_enabled <S2SV_ModEnd> ) return 0 <S2SV_ModStart> += 2 ; if ( unlikely ( kvm_read_guest_cached ( v -> kvm , & vcpu -> pv_time , & guest_hv_clock , sizeof ( guest_hv_clock ) ) ) ) return 0 <S2SV_ModEnd> ; pvclock_flags = <S2SV_ModStart> = ( guest_hv_clock . <S2SV_ModEnd> flags & PVCLOCK_GUEST_STOPPED <S2SV_ModStart> = pvclock_flags ; kvm_write_guest_cached ( v -> kvm , & vcpu -> pv_time , <S2SV_ModEnd> & vcpu -> <S2SV_ModStart> ) ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int64_t vp9_block_error_c ( const int16_t * coeff , const int16_t * dqcoeff , <S2SV_EndBug> intptr_t block_size , int64_t * ssz ) { int i ; int64_t error = 0 , sqcoeff = 0 ; for ( i = 0 ; i < block_size ; i ++ ) { const int diff = coeff [ i ] - dqcoeff [ i ] ; error += diff * diff ; sqcoeff += coeff [ i ] * coeff [ i ] ; } * ssz = sqcoeff ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_block_error_c ( const tran_low_t <S2SV_ModEnd> * coeff , <S2SV_ModStart> coeff , const tran_low_t <S2SV_ModEnd> * dqcoeff ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static int encrypted_update ( struct key * key , struct key_preparsed_payload * prep ) { struct encrypted_key_payload * epayload = key -> payload . data [ 0 ] ; struct encrypted_key_payload * new_epayload ; char * buf ; char * new_master_desc = NULL ; const char * format = NULL ; size_t datalen = prep -> datalen ; int ret = 0 ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) <S2SV_EndBug> return - ENOKEY ; if ( datalen <= 0 || datalen > 32767 || ! prep -> data ) return - EINVAL ; buf = kmalloc ( datalen + 1 , GFP_KERNEL ) ; if ( ! buf ) return - ENOMEM ; buf [ datalen ] = 0 ; memcpy ( buf , prep -> data , datalen ) ; ret = datablob_parse ( buf , & format , & new_master_desc , NULL , NULL ) ; if ( ret < 0 ) goto out ; ret = valid_master_desc ( new_master_desc , epayload -> master_desc ) ; if ( ret < 0 ) goto out ; new_epayload = encrypted_key_alloc ( key , epayload -> format , new_master_desc , epayload -> datalen ) ; if ( IS_ERR ( new_epayload ) ) { ret = PTR_ERR ( new_epayload ) ; goto out ; } __ekey_init ( new_epayload , epayload -> format , new_master_desc , epayload -> datalen ) ; memcpy ( new_epayload -> iv , epayload -> iv , ivsize ) ; memcpy ( new_epayload -> payload_data , epayload -> payload_data , epayload -> payload_datalen ) ; rcu_assign_keypointer ( key , new_epayload ) ; call_rcu ( & epayload -> rcu , encrypted_rcu_free ) ; out : kzfree ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_negative ( key <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 asmlinkage void user_unaligned_trap ( struct pt_regs * regs , unsigned int insn ) { enum direction dir ; if ( ! ( current -> thread . flags & SPARC_FLAG_UNALIGNED ) || ( ( ( insn >> 30 ) & 3 ) != 3 ) ) goto kill_user ; dir = decode_direction ( insn ) ; if ( ! ok_for_user ( regs , insn , dir ) ) { goto kill_user ; } else { int err , size = decode_access_size ( insn ) ; unsigned long addr ; if ( floating_point_load_or_store_p ( insn ) ) { printk ( \"User<S2SV_blank>FPU<S2SV_blank>load/store<S2SV_blank>unaligned<S2SV_blank>unsupported.\\\\n\" ) ; goto kill_user ; } addr = compute_effective_address ( regs , insn ) ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 , 0 , regs , addr ) ; <S2SV_EndBug> switch ( dir ) { case load : err = do_int_load ( fetch_reg_addr ( ( ( insn >> 25 ) & 0x1f ) , regs ) , size , ( unsigned long * ) addr , decode_signedness ( insn ) ) ; break ; case store : err = do_int_store ( ( ( insn >> 25 ) & 0x1f ) , size , ( unsigned long * ) addr , regs ) ; break ; case both : printk ( \"Unaligned<S2SV_blank>SWAP<S2SV_blank>unsupported.\\\\n\" ) ; err = - EFAULT ; break ; default : unaligned_panic ( \"Impossible<S2SV_blank>user<S2SV_blank>unaligned<S2SV_blank>trap.\" ) ; goto out ; } if ( err ) goto kill_user ; else advance ( regs ) ; goto out ; } kill_user : user_mna_trap_fault ( regs , insn ) ; out : ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 <S2SV_StartBug> void Huff_offsetReceive ( node_t * node , int * ch , byte * fin , int * offset ) { <S2SV_EndBug> bloc = * offset ; <S2SV_StartBug> while ( node && node -> symbol == INTERNAL_NODE ) { <S2SV_EndBug> if ( get_bit ( fin ) ) { node = node -> right ; } else { node = node -> left ; } } if ( ! node ) { * ch = 0 ; return ; } * ch = node -> symbol ; * offset = bloc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int * offset , int maxoffset <S2SV_ModStart> INTERNAL_NODE ) { if ( bloc >= maxoffset ) { * ch = 0 ; * offset = maxoffset + 1 ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 static int read_private_key ( RSA * rsa ) { int r ; sc_path_t path ; sc_file_t * file ; const sc_acl_entry_t * e ; u8 buf [ 2048 ] , * p = buf ; size_t bufsize , keysize ; r = select_app_df ( ) ; if ( r ) return 1 ; sc_format_path ( \"I0012\" , & path ) ; r = sc_select_file ( card , & path , & file ) ; if ( r ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>select<S2SV_blank>private<S2SV_blank>key<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , sc_strerror ( r ) ) ; return 2 ; } e = sc_file_get_acl_entry ( file , SC_AC_OP_READ ) ; if ( e == NULL || e -> method == SC_AC_NEVER ) return 10 ; <S2SV_StartBug> bufsize = file -> size ; <S2SV_EndBug> sc_file_free ( file ) ; r = sc_read_binary ( card , 0 , buf , bufsize , 0 ) ; if ( r < 0 ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>private<S2SV_blank>key<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , sc_strerror ( r ) ) ; return 2 ; } bufsize = r ; do { if ( bufsize < 4 ) return 3 ; keysize = ( p [ 0 ] << 8 ) | p [ 1 ] ; if ( keysize == 0 ) break ; if ( keysize < 3 ) return 3 ; if ( p [ 2 ] == opt_key_num ) break ; p += keysize ; bufsize -= keysize ; } while ( 1 ) ; if ( keysize == 0 ) { printf ( \"Key<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>not<S2SV_blank>found.\\\\n\" , opt_key_num ) ; return 2 ; } return parse_private_key ( p , keysize , rsa ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bufsize = MIN ( <S2SV_ModStart> file -> size , sizeof buf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-94(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8284\n\n```\nCWE-94 static target_ulong disas_insn ( CPUX86State * env , DisasContext * s , target_ulong pc_start ) { int b , prefixes ; int shift ; TCGMemOp ot , aflag , dflag ; int modrm , reg , rm , mod , op , opreg , val ; target_ulong next_eip , tval ; int rex_w , rex_r ; s -> pc_start = s -> pc = pc_start ; prefixes = 0 ; s -> override = - 1 ; rex_w = - 1 ; rex_r = 0 ; # ifdef TARGET_X86_64 s -> rex_x = 0 ; s -> rex_b = 0 ; x86_64_hregs = 0 ; # endif s -> rip_offset = 0 ; s -> vex_l = 0 ; s -> vex_v = 0 ; <S2SV_StartBug> next_byte : <S2SV_EndBug> b = cpu_ldub_code ( env , s -> pc ) ; s -> pc ++ ; switch ( b ) { case 0xf3 : prefixes |= PREFIX_REPZ ; goto next_byte ; case 0xf2 : prefixes |= PREFIX_REPNZ ; goto next_byte ; case 0xf0 : prefixes |= PREFIX_LOCK ; goto next_byte ; case 0x2e : s -> override = R_CS ; goto next_byte ; case 0x36 : s -> override = R_SS ; goto next_byte ; case 0x3e : s -> override = R_DS ; goto next_byte ; case 0x26 : s -> override = R_ES ; goto next_byte ; case 0x64 : s -> override = R_FS ; goto next_byte ; case 0x65 : s -> override = R_GS ; goto next_byte ; case 0x66 : prefixes |= PREFIX_DATA ; goto next_byte ; case 0x67 : prefixes |= PREFIX_ADR ; goto next_byte ; # ifdef TARGET_X86_64 case 0x40 ... 0x4f : if ( CODE64 ( s ) ) { rex_w = ( b >> 3 ) & 1 ; rex_r = ( b & 0x4 ) << 1 ; s -> rex_x = ( b & 0x2 ) << 2 ; REX_B ( s ) = ( b & 0x1 ) << 3 ; x86_64_hregs = 1 ; goto next_byte ; } break ; # endif case 0xc5 : case 0xc4 : if ( s -> code32 && ! s -> vm86 ) { static const int pp_prefix [ 4 ] = { 0 , PREFIX_DATA , PREFIX_REPZ , PREFIX_REPNZ } ; int vex3 , vex2 = cpu_ldub_code ( env , s -> pc ) ; if ( ! CODE64 ( s ) && ( vex2 & 0xc0 ) != 0xc0 ) { break ; } s -> pc ++ ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ | PREFIX_LOCK | PREFIX_DATA ) ) { goto illegal_op ; } # ifdef TARGET_X86_64 if ( x86_64_hregs ) { goto illegal_op ; } # endif rex_r = ( ~ vex2 >> 4 ) & 8 ; if ( b == 0xc5 ) { vex3 = vex2 ; b = cpu_ldub_code ( env , s -> pc ++ ) ; } else { # ifdef TARGET_X86_64 s -> rex_x = ( ~ vex2 >> 3 ) & 8 ; s -> rex_b = ( ~ vex2 >> 2 ) & 8 ; # endif vex3 = cpu_ldub_code ( env , s -> pc ++ ) ; rex_w = ( vex3 >> 7 ) & 1 ; switch ( vex2 & 0x1f ) { case 0x01 : b = cpu_ldub_code ( env , s -> pc ++ ) | 0x100 ; break ; case 0x02 : b = 0x138 ; break ; case 0x03 : b = 0x13a ; break ; default : goto unknown_op ; } } s -> vex_v = ( ~ vex3 >> 3 ) & 0xf ; s -> vex_l = ( vex3 >> 2 ) & 1 ; prefixes |= pp_prefix [ vex3 & 3 ] | PREFIX_VEX ; } break ; } if ( CODE64 ( s ) ) { dflag = ( rex_w > 0 ? MO_64 : prefixes & PREFIX_DATA ? MO_16 : MO_32 ) ; aflag = ( prefixes & PREFIX_ADR ? MO_32 : MO_64 ) ; } else { if ( s -> code32 ^ ( ( prefixes & PREFIX_DATA ) != 0 ) ) { dflag = MO_32 ; } else { dflag = MO_16 ; } if ( s -> code32 ^ ( ( prefixes & PREFIX_ADR ) != 0 ) ) { aflag = MO_32 ; } else { aflag = MO_16 ; } } s -> prefix = prefixes ; s -> aflag = aflag ; s -> dflag = dflag ; reswitch : switch ( b ) { case 0x0f : b = cpu_ldub_code ( env , s -> pc ++ ) | 0x100 ; goto reswitch ; case 0x00 ... 0x05 : case 0x08 ... 0x0d : case 0x10 ... 0x15 : case 0x18 ... 0x1d : case 0x20 ... 0x25 : case 0x28 ... 0x2d : case 0x30 ... 0x35 : case 0x38 ... 0x3d : { int op , f , val ; op = ( b >> 3 ) & 7 ; f = ( b >> 1 ) & 3 ; ot = mo_b_d ( b , dflag ) ; switch ( f ) { case 0 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; opreg = OR_TMP0 ; } else if ( op == OP_XORL && rm == reg ) { xor_zero : set_cc_op ( s , CC_OP_CLR ) ; tcg_gen_movi_tl ( cpu_T0 , 0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; break ; } else { opreg = rm ; } gen_op_mov_v_reg ( ot , cpu_T1 , reg ) ; gen_op ( s , op , ot , opreg ) ; break ; case 1 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; } else if ( op == OP_XORL && rm == reg ) { goto xor_zero ; } else { gen_op_mov_v_reg ( ot , cpu_T1 , rm ) ; } gen_op ( s , op , ot , reg ) ; break ; case 2 : val = insn_get ( env , s , ot ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; gen_op ( s , op , ot , OR_EAX ) ; break ; } } break ; case 0x82 : if ( CODE64 ( s ) ) goto illegal_op ; case 0x80 : case 0x81 : case 0x83 : { int val ; ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; op = ( modrm >> 3 ) & 7 ; if ( mod != 3 ) { if ( b == 0x83 ) s -> rip_offset = 1 ; else s -> rip_offset = insn_const_size ( ot ) ; gen_lea_modrm ( env , s , modrm ) ; opreg = OR_TMP0 ; } else { opreg = rm ; } switch ( b ) { default : case 0x80 : case 0x81 : case 0x82 : val = insn_get ( env , s , ot ) ; break ; case 0x83 : val = ( int8_t ) insn_get ( env , s , MO_8 ) ; break ; } tcg_gen_movi_tl ( cpu_T1 , val ) ; gen_op ( s , op , ot , opreg ) ; } break ; case 0x40 ... 0x47 : ot = dflag ; gen_inc ( s , ot , OR_EAX + ( b & 7 ) , 1 ) ; break ; case 0x48 ... 0x4f : ot = dflag ; gen_inc ( s , ot , OR_EAX + ( b & 7 ) , - 1 ) ; break ; case 0xf6 : case 0xf7 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; op = ( modrm >> 3 ) & 7 ; if ( mod != 3 ) { if ( op == 0 ) { s -> rip_offset = insn_const_size ( ot ) ; } gen_lea_modrm ( env , s , modrm ) ; if ( ! ( s -> prefix & PREFIX_LOCK ) || op != 2 ) { gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; } } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; } switch ( op ) { case 0 : val = insn_get ( env , s , ot ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; gen_op_testl_T0_T1_cc ( ) ; set_cc_op ( s , CC_OP_LOGICB + ot ) ; break ; case 2 : if ( s -> prefix & PREFIX_LOCK ) { if ( mod == 3 ) { goto illegal_op ; } tcg_gen_movi_tl ( cpu_T0 , ~ 0 ) ; tcg_gen_atomic_xor_fetch_tl ( cpu_T0 , cpu_A0 , cpu_T0 , s -> mem_index , ot | MO_LE ) ; } else { tcg_gen_not_tl ( cpu_T0 , cpu_T0 ) ; if ( mod != 3 ) { gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } } break ; case 3 : if ( s -> prefix & PREFIX_LOCK ) { TCGLabel * label1 ; TCGv a0 , t0 , t1 , t2 ; if ( mod == 3 ) { goto illegal_op ; } a0 = tcg_temp_local_new ( ) ; t0 = tcg_temp_local_new ( ) ; label1 = gen_new_label ( ) ; tcg_gen_mov_tl ( a0 , cpu_A0 ) ; tcg_gen_mov_tl ( t0 , cpu_T0 ) ; gen_set_label ( label1 ) ; t1 = tcg_temp_new ( ) ; t2 = tcg_temp_new ( ) ; tcg_gen_mov_tl ( t2 , t0 ) ; tcg_gen_neg_tl ( t1 , t0 ) ; tcg_gen_atomic_cmpxchg_tl ( t0 , a0 , t0 , t1 , s -> mem_index , ot | MO_LE ) ; tcg_temp_free ( t1 ) ; tcg_gen_brcond_tl ( TCG_COND_NE , t0 , t2 , label1 ) ; tcg_temp_free ( t2 ) ; tcg_temp_free ( a0 ) ; tcg_gen_mov_tl ( cpu_T0 , t0 ) ; tcg_temp_free ( t0 ) ; } else { tcg_gen_neg_tl ( cpu_T0 , cpu_T0 ) ; if ( mod != 3 ) { gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } } gen_op_update_neg_cc ( ) ; set_cc_op ( s , CC_OP_SUBB + ot ) ; break ; case 4 : switch ( ot ) { case MO_8 : gen_op_mov_v_reg ( MO_8 , cpu_T1 , R_EAX ) ; tcg_gen_ext8u_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext8u_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_andi_tl ( cpu_cc_src , cpu_T0 , 0xff00 ) ; set_cc_op ( s , CC_OP_MULB ) ; break ; case MO_16 : gen_op_mov_v_reg ( MO_16 , cpu_T1 , R_EAX ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext16u_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_shri_tl ( cpu_T0 , cpu_T0 , 16 ) ; gen_op_mov_reg_v ( MO_16 , R_EDX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_src , cpu_T0 ) ; set_cc_op ( s , CC_OP_MULW ) ; break ; default : case MO_32 : tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_regs [ R_EAX ] ) ; tcg_gen_mulu2_i32 ( cpu_tmp2_i32 , cpu_tmp3_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ R_EAX ] , cpu_tmp2_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ R_EDX ] , cpu_tmp3_i32 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ R_EAX ] ) ; tcg_gen_mov_tl ( cpu_cc_src , cpu_regs [ R_EDX ] ) ; set_cc_op ( s , CC_OP_MULL ) ; break ; # ifdef TARGET_X86_64 case MO_64 : tcg_gen_mulu2_i64 ( cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] , cpu_T0 , cpu_regs [ R_EAX ] ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ R_EAX ] ) ; tcg_gen_mov_tl ( cpu_cc_src , cpu_regs [ R_EDX ] ) ; set_cc_op ( s , CC_OP_MULQ ) ; break ; # endif } break ; case 5 : switch ( ot ) { case MO_8 : gen_op_mov_v_reg ( MO_8 , cpu_T1 , R_EAX ) ; tcg_gen_ext8s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext8s_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_ext8s_tl ( cpu_tmp0 , cpu_T0 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_T0 , cpu_tmp0 ) ; set_cc_op ( s , CC_OP_MULB ) ; break ; case MO_16 : gen_op_mov_v_reg ( MO_16 , cpu_T1 , R_EAX ) ; tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext16s_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_ext16s_tl ( cpu_tmp0 , cpu_T0 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_T0 , cpu_tmp0 ) ; tcg_gen_shri_tl ( cpu_T0 , cpu_T0 , 16 ) ; gen_op_mov_reg_v ( MO_16 , R_EDX , cpu_T0 ) ; set_cc_op ( s , CC_OP_MULW ) ; break ; default : case MO_32 : tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_regs [ R_EAX ] ) ; tcg_gen_muls2_i32 ( cpu_tmp2_i32 , cpu_tmp3_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ R_EAX ] , cpu_tmp2_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ R_EDX ] , cpu_tmp3_i32 ) ; tcg_gen_sari_i32 ( cpu_tmp2_i32 , cpu_tmp2_i32 , 31 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ R_EAX ] ) ; tcg_gen_sub_i32 ( cpu_tmp2_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_cc_src , cpu_tmp2_i32 ) ; set_cc_op ( s , CC_OP_MULL ) ; break ; # ifdef TARGET_X86_64 case MO_64 : tcg_gen_muls2_i64 ( cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] , cpu_T0 , cpu_regs [ R_EAX ] ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ R_EAX ] ) ; tcg_gen_sari_tl ( cpu_cc_src , cpu_regs [ R_EAX ] , 63 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_cc_src , cpu_regs [ R_EDX ] ) ; set_cc_op ( s , CC_OP_MULQ ) ; break ; # endif } break ; case 6 : switch ( ot ) { case MO_8 : gen_helper_divb_AL ( cpu_env , cpu_T0 ) ; break ; case MO_16 : gen_helper_divw_AX ( cpu_env , cpu_T0 ) ; break ; default : case MO_32 : gen_helper_divl_EAX ( cpu_env , cpu_T0 ) ; break ; # ifdef TARGET_X86_64 case MO_64 : gen_helper_divq_EAX ( cpu_env , cpu_T0 ) ; break ; # endif } break ; case 7 : switch ( ot ) { case MO_8 : gen_helper_idivb_AL ( cpu_env , cpu_T0 ) ; break ; case MO_16 : gen_helper_idivw_AX ( cpu_env , cpu_T0 ) ; break ; default : case MO_32 : gen_helper_idivl_EAX ( cpu_env , cpu_T0 ) ; break ; # ifdef TARGET_X86_64 case MO_64 : gen_helper_idivq_EAX ( cpu_env , cpu_T0 ) ; break ; # endif } break ; default : goto unknown_op ; } break ; case 0xfe : case 0xff : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; op = ( modrm >> 3 ) & 7 ; if ( op >= 2 && b == 0xfe ) { goto unknown_op ; } if ( CODE64 ( s ) ) { if ( op == 2 || op == 4 ) { ot = MO_64 ; } else if ( op == 3 || op == 5 ) { ot = dflag != MO_16 ? MO_32 + ( rex_w == 1 ) : MO_16 ; } else if ( op == 6 ) { ot = mo_pushpop ( s , dflag ) ; } } if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; if ( op >= 2 && op != 3 && op != 5 ) gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; } switch ( op ) { case 0 : if ( mod != 3 ) opreg = OR_TMP0 ; else opreg = rm ; gen_inc ( s , ot , opreg , 1 ) ; break ; case 1 : if ( mod != 3 ) opreg = OR_TMP0 ; else opreg = rm ; gen_inc ( s , ot , opreg , - 1 ) ; break ; case 2 : if ( dflag == MO_16 ) { tcg_gen_ext16u_tl ( cpu_T0 , cpu_T0 ) ; } next_eip = s -> pc - s -> cs_base ; tcg_gen_movi_tl ( cpu_T1 , next_eip ) ; gen_push_v ( s , cpu_T1 ) ; gen_op_jmp_v ( cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_eob ( s ) ; break ; case 3 : gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 1 << ot ) ; gen_op_ld_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; do_lcall : if ( s -> pe && ! s -> vm86 ) { tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_lcall_protected ( cpu_env , cpu_tmp2_i32 , cpu_T1 , tcg_const_i32 ( dflag - 1 ) , tcg_const_tl ( s -> pc - s -> cs_base ) ) ; } else { tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_lcall_real ( cpu_env , cpu_tmp2_i32 , cpu_T1 , tcg_const_i32 ( dflag - 1 ) , tcg_const_i32 ( s -> pc - s -> cs_base ) ) ; } gen_eob ( s ) ; break ; case 4 : if ( dflag == MO_16 ) { tcg_gen_ext16u_tl ( cpu_T0 , cpu_T0 ) ; } gen_op_jmp_v ( cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_eob ( s ) ; break ; case 5 : gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 1 << ot ) ; gen_op_ld_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; do_ljmp : if ( s -> pe && ! s -> vm86 ) { tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_ljmp_protected ( cpu_env , cpu_tmp2_i32 , cpu_T1 , tcg_const_tl ( s -> pc - s -> cs_base ) ) ; } else { gen_op_movl_seg_T0_vm ( R_CS ) ; gen_op_jmp_v ( cpu_T1 ) ; } gen_eob ( s ) ; break ; case 6 : gen_push_v ( s , cpu_T0 ) ; break ; default : goto unknown_op ; } break ; case 0x84 : case 0x85 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; gen_op_mov_v_reg ( ot , cpu_T1 , reg ) ; gen_op_testl_T0_T1_cc ( ) ; set_cc_op ( s , CC_OP_LOGICB + ot ) ; break ; case 0xa8 : case 0xa9 : ot = mo_b_d ( b , dflag ) ; val = insn_get ( env , s , ot ) ; gen_op_mov_v_reg ( ot , cpu_T0 , OR_EAX ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; gen_op_testl_T0_T1_cc ( ) ; set_cc_op ( s , CC_OP_LOGICB + ot ) ; break ; case 0x98 : switch ( dflag ) { # ifdef TARGET_X86_64 case MO_64 : gen_op_mov_v_reg ( MO_32 , cpu_T0 , R_EAX ) ; tcg_gen_ext32s_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_64 , R_EAX , cpu_T0 ) ; break ; # endif case MO_32 : gen_op_mov_v_reg ( MO_16 , cpu_T0 , R_EAX ) ; tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_32 , R_EAX , cpu_T0 ) ; break ; case MO_16 : gen_op_mov_v_reg ( MO_8 , cpu_T0 , R_EAX ) ; tcg_gen_ext8s_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; break ; default : tcg_abort ( ) ; } break ; case 0x99 : switch ( dflag ) { # ifdef TARGET_X86_64 case MO_64 : gen_op_mov_v_reg ( MO_64 , cpu_T0 , R_EAX ) ; tcg_gen_sari_tl ( cpu_T0 , cpu_T0 , 63 ) ; gen_op_mov_reg_v ( MO_64 , R_EDX , cpu_T0 ) ; break ; # endif case MO_32 : gen_op_mov_v_reg ( MO_32 , cpu_T0 , R_EAX ) ; tcg_gen_ext32s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_sari_tl ( cpu_T0 , cpu_T0 , 31 ) ; gen_op_mov_reg_v ( MO_32 , R_EDX , cpu_T0 ) ; break ; case MO_16 : gen_op_mov_v_reg ( MO_16 , cpu_T0 , R_EAX ) ; tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_sari_tl ( cpu_T0 , cpu_T0 , 15 ) ; gen_op_mov_reg_v ( MO_16 , R_EDX , cpu_T0 ) ; break ; default : tcg_abort ( ) ; } break ; case 0x1af : case 0x69 : case 0x6b : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( b == 0x69 ) s -> rip_offset = insn_const_size ( ot ) ; else if ( b == 0x6b ) s -> rip_offset = 1 ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; if ( b == 0x69 ) { val = insn_get ( env , s , ot ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; } else if ( b == 0x6b ) { val = ( int8_t ) insn_get ( env , s , MO_8 ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; } else { gen_op_mov_v_reg ( ot , cpu_T1 , reg ) ; } switch ( ot ) { # ifdef TARGET_X86_64 case MO_64 : tcg_gen_muls2_i64 ( cpu_regs [ reg ] , cpu_T1 , cpu_T0 , cpu_T1 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ reg ] ) ; tcg_gen_sari_tl ( cpu_cc_src , cpu_cc_dst , 63 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_cc_src , cpu_T1 ) ; break ; # endif case MO_32 : tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_T1 ) ; tcg_gen_muls2_i32 ( cpu_tmp2_i32 , cpu_tmp3_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ reg ] , cpu_tmp2_i32 ) ; tcg_gen_sari_i32 ( cpu_tmp2_i32 , cpu_tmp2_i32 , 31 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ reg ] ) ; tcg_gen_sub_i32 ( cpu_tmp2_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_cc_src , cpu_tmp2_i32 ) ; break ; default : tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext16s_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_ext16s_tl ( cpu_tmp0 , cpu_T0 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_T0 , cpu_tmp0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; break ; } set_cc_op ( s , CC_OP_MULB + ot ) ; break ; case 0x1c0 : case 0x1c1 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; gen_op_mov_v_reg ( ot , cpu_T0 , reg ) ; if ( mod == 3 ) { rm = ( modrm & 7 ) | REX_B ( s ) ; gen_op_mov_v_reg ( ot , cpu_T1 , rm ) ; tcg_gen_add_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } else { gen_lea_modrm ( env , s , modrm ) ; if ( s -> prefix & PREFIX_LOCK ) { tcg_gen_atomic_fetch_add_tl ( cpu_T1 , cpu_A0 , cpu_T0 , s -> mem_index , ot | MO_LE ) ; tcg_gen_add_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; } else { gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; tcg_gen_add_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; } gen_op_update2_cc ( ) ; set_cc_op ( s , CC_OP_ADDB + ot ) ; break ; case 0x1b0 : case 0x1b1 : { TCGv oldv , newv , cmpv ; ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; oldv = tcg_temp_new ( ) ; newv = tcg_temp_new ( ) ; cmpv = tcg_temp_new ( ) ; gen_op_mov_v_reg ( ot , newv , reg ) ; tcg_gen_mov_tl ( cmpv , cpu_regs [ R_EAX ] ) ; if ( s -> prefix & PREFIX_LOCK ) { if ( mod == 3 ) { goto illegal_op ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_atomic_cmpxchg_tl ( oldv , cpu_A0 , cmpv , newv , s -> mem_index , ot | MO_LE ) ; gen_op_mov_reg_v ( ot , R_EAX , oldv ) ; } else { if ( mod == 3 ) { rm = ( modrm & 7 ) | REX_B ( s ) ; gen_op_mov_v_reg ( ot , oldv , rm ) ; } else { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , ot , oldv , cpu_A0 ) ; rm = 0 ; } gen_extu ( ot , oldv ) ; gen_extu ( ot , cmpv ) ; tcg_gen_movcond_tl ( TCG_COND_EQ , newv , oldv , cmpv , newv , oldv ) ; if ( mod == 3 ) { gen_op_mov_reg_v ( ot , R_EAX , oldv ) ; gen_op_mov_reg_v ( ot , rm , newv ) ; } else { gen_op_st_v ( s , ot , newv , cpu_A0 ) ; gen_op_mov_reg_v ( ot , R_EAX , oldv ) ; } } tcg_gen_mov_tl ( cpu_cc_src , oldv ) ; tcg_gen_mov_tl ( cpu_cc_srcT , cmpv ) ; tcg_gen_sub_tl ( cpu_cc_dst , cmpv , oldv ) ; set_cc_op ( s , CC_OP_SUBB + ot ) ; tcg_temp_free ( oldv ) ; tcg_temp_free ( newv ) ; tcg_temp_free ( cmpv ) ; } break ; case 0x1c7 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( ( mod == 3 ) || ( ( modrm & 0x38 ) != 0x8 ) ) goto illegal_op ; # ifdef TARGET_X86_64 if ( dflag == MO_64 ) { if ( ! ( s -> cpuid_ext_features & CPUID_EXT_CX16 ) ) goto illegal_op ; gen_lea_modrm ( env , s , modrm ) ; if ( ( s -> prefix & PREFIX_LOCK ) && parallel_cpus ) { gen_helper_cmpxchg16b ( cpu_env , cpu_A0 ) ; } else { gen_helper_cmpxchg16b_unlocked ( cpu_env , cpu_A0 ) ; } } else # endif { if ( ! ( s -> cpuid_features & CPUID_CX8 ) ) goto illegal_op ; gen_lea_modrm ( env , s , modrm ) ; if ( ( s -> prefix & PREFIX_LOCK ) && parallel_cpus ) { gen_helper_cmpxchg8b ( cpu_env , cpu_A0 ) ; } else { gen_helper_cmpxchg8b_unlocked ( cpu_env , cpu_A0 ) ; } } set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x50 ... 0x57 : gen_op_mov_v_reg ( MO_32 , cpu_T0 , ( b & 7 ) | REX_B ( s ) ) ; gen_push_v ( s , cpu_T0 ) ; break ; case 0x58 ... 0x5f : ot = gen_pop_T0 ( s ) ; gen_pop_update ( s , ot ) ; gen_op_mov_reg_v ( ot , ( b & 7 ) | REX_B ( s ) , cpu_T0 ) ; break ; case 0x60 : if ( CODE64 ( s ) ) goto illegal_op ; gen_pusha ( s ) ; break ; case 0x61 : if ( CODE64 ( s ) ) goto illegal_op ; gen_popa ( s ) ; break ; case 0x68 : case 0x6a : ot = mo_pushpop ( s , dflag ) ; if ( b == 0x68 ) val = insn_get ( env , s , ot ) ; else val = ( int8_t ) insn_get ( env , s , MO_8 ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_push_v ( s , cpu_T0 ) ; break ; case 0x8f : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; ot = gen_pop_T0 ( s ) ; if ( mod == 3 ) { gen_pop_update ( s , ot ) ; rm = ( modrm & 7 ) | REX_B ( s ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } else { s -> popl_esp_hack = 1 << ot ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; s -> popl_esp_hack = 0 ; gen_pop_update ( s , ot ) ; } break ; case 0xc8 : { int level ; val = cpu_lduw_code ( env , s -> pc ) ; s -> pc += 2 ; level = cpu_ldub_code ( env , s -> pc ++ ) ; gen_enter ( s , val , level ) ; } break ; case 0xc9 : gen_leave ( s ) ; break ; case 0x06 : case 0x0e : case 0x16 : case 0x1e : if ( CODE64 ( s ) ) goto illegal_op ; gen_op_movl_T0_seg ( b >> 3 ) ; gen_push_v ( s , cpu_T0 ) ; break ; case 0x1a0 : case 0x1a8 : gen_op_movl_T0_seg ( ( b >> 3 ) & 7 ) ; gen_push_v ( s , cpu_T0 ) ; break ; case 0x07 : case 0x17 : case 0x1f : if ( CODE64 ( s ) ) goto illegal_op ; reg = b >> 3 ; ot = gen_pop_T0 ( s ) ; gen_movl_seg_T0 ( s , reg ) ; gen_pop_update ( s , ot ) ; if ( s -> is_jmp ) { gen_jmp_im ( s -> pc - s -> cs_base ) ; if ( reg == R_SS ) { s -> tf = 0 ; gen_eob_inhibit_irq ( s , true ) ; } else { gen_eob ( s ) ; } } break ; case 0x1a1 : case 0x1a9 : ot = gen_pop_T0 ( s ) ; gen_movl_seg_T0 ( s , ( b >> 3 ) & 7 ) ; gen_pop_update ( s , ot ) ; if ( s -> is_jmp ) { gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } break ; case 0x88 : case 0x89 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , reg , 1 ) ; break ; case 0xc6 : case 0xc7 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( mod != 3 ) { s -> rip_offset = insn_const_size ( ot ) ; gen_lea_modrm ( env , s , modrm ) ; } val = insn_get ( env , s , ot ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; if ( mod != 3 ) { gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_reg_v ( ot , ( modrm & 7 ) | REX_B ( s ) , cpu_T0 ) ; } break ; case 0x8a : case 0x8b : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; break ; case 0x8e : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( modrm >> 3 ) & 7 ; if ( reg >= 6 || reg == R_CS ) goto illegal_op ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; gen_movl_seg_T0 ( s , reg ) ; if ( s -> is_jmp ) { gen_jmp_im ( s -> pc - s -> cs_base ) ; if ( reg == R_SS ) { s -> tf = 0 ; gen_eob_inhibit_irq ( s , true ) ; } else { gen_eob ( s ) ; } } break ; case 0x8c : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( modrm >> 3 ) & 7 ; mod = ( modrm >> 6 ) & 3 ; if ( reg >= 6 ) goto illegal_op ; gen_op_movl_T0_seg ( reg ) ; ot = mod == 3 ? dflag : MO_16 ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; break ; case 0x1b6 : case 0x1b7 : case 0x1be : case 0x1bf : { TCGMemOp d_ot ; TCGMemOp s_ot ; d_ot = dflag ; ot = ( b & 1 ) + MO_8 ; s_ot = b & 8 ? MO_SIGN | ot : ot ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod == 3 ) { if ( s_ot == MO_SB && byte_reg_is_xH ( rm ) ) { tcg_gen_sextract_tl ( cpu_T0 , cpu_regs [ rm - 4 ] , 8 , 8 ) ; } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; switch ( s_ot ) { case MO_UB : tcg_gen_ext8u_tl ( cpu_T0 , cpu_T0 ) ; break ; case MO_SB : tcg_gen_ext8s_tl ( cpu_T0 , cpu_T0 ) ; break ; case MO_UW : tcg_gen_ext16u_tl ( cpu_T0 , cpu_T0 ) ; break ; default : case MO_SW : tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; break ; } } gen_op_mov_reg_v ( d_ot , reg , cpu_T0 ) ; } else { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , s_ot , cpu_T0 , cpu_A0 ) ; gen_op_mov_reg_v ( d_ot , reg , cpu_T0 ) ; } } break ; case 0x8d : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; { AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; TCGv ea = gen_lea_modrm_1 ( a ) ; gen_lea_v_seg ( s , s -> aflag , ea , - 1 , - 1 ) ; gen_op_mov_reg_v ( dflag , reg , cpu_A0 ) ; } break ; case 0xa0 : case 0xa1 : case 0xa2 : case 0xa3 : { target_ulong offset_addr ; ot = mo_b_d ( b , dflag ) ; switch ( s -> aflag ) { # ifdef TARGET_X86_64 case MO_64 : offset_addr = cpu_ldq_code ( env , s -> pc ) ; s -> pc += 8 ; break ; # endif default : offset_addr = insn_get ( env , s , s -> aflag ) ; break ; } tcg_gen_movi_tl ( cpu_A0 , offset_addr ) ; gen_add_A0_ds_seg ( s ) ; if ( ( b & 2 ) == 0 ) { gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; gen_op_mov_reg_v ( ot , R_EAX , cpu_T0 ) ; } else { gen_op_mov_v_reg ( ot , cpu_T0 , R_EAX ) ; gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } } break ; case 0xd7 : tcg_gen_mov_tl ( cpu_A0 , cpu_regs [ R_EBX ] ) ; tcg_gen_ext8u_tl ( cpu_T0 , cpu_regs [ R_EAX ] ) ; tcg_gen_add_tl ( cpu_A0 , cpu_A0 , cpu_T0 ) ; gen_extu ( s -> aflag , cpu_A0 ) ; gen_add_A0_ds_seg ( s ) ; gen_op_ld_v ( s , MO_8 , cpu_T0 , cpu_A0 ) ; gen_op_mov_reg_v ( MO_8 , R_EAX , cpu_T0 ) ; break ; case 0xb0 ... 0xb7 : val = insn_get ( env , s , MO_8 ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_op_mov_reg_v ( MO_8 , ( b & 7 ) | REX_B ( s ) , cpu_T0 ) ; break ; case 0xb8 ... 0xbf : # ifdef TARGET_X86_64 if ( dflag == MO_64 ) { uint64_t tmp ; tmp = cpu_ldq_code ( env , s -> pc ) ; s -> pc += 8 ; reg = ( b & 7 ) | REX_B ( s ) ; tcg_gen_movi_tl ( cpu_T0 , tmp ) ; gen_op_mov_reg_v ( MO_64 , reg , cpu_T0 ) ; } else # endif { ot = dflag ; val = insn_get ( env , s , ot ) ; reg = ( b & 7 ) | REX_B ( s ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; } break ; case 0x91 ... 0x97 : do_xchg_reg_eax : ot = dflag ; reg = ( b & 7 ) | REX_B ( s ) ; rm = R_EAX ; goto do_xchg_reg ; case 0x86 : case 0x87 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) { rm = ( modrm & 7 ) | REX_B ( s ) ; do_xchg_reg : gen_op_mov_v_reg ( ot , cpu_T0 , reg ) ; gen_op_mov_v_reg ( ot , cpu_T1 , rm ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; } else { gen_lea_modrm ( env , s , modrm ) ; gen_op_mov_v_reg ( ot , cpu_T0 , reg ) ; tcg_gen_atomic_xchg_tl ( cpu_T1 , cpu_A0 , cpu_T0 , s -> mem_index , ot | MO_LE ) ; gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; } break ; case 0xc4 : op = R_ES ; goto do_lxx ; case 0xc5 : op = R_DS ; goto do_lxx ; case 0x1b2 : op = R_SS ; goto do_lxx ; case 0x1b4 : op = R_FS ; goto do_lxx ; case 0x1b5 : op = R_GS ; do_lxx : ot = dflag != MO_16 ? MO_32 : MO_16 ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 1 << ot ) ; gen_op_ld_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; gen_movl_seg_T0 ( s , op ) ; gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; if ( s -> is_jmp ) { gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } break ; case 0xc0 : case 0xc1 : shift = 2 ; grp2 : { ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; op = ( modrm >> 3 ) & 7 ; if ( mod != 3 ) { if ( shift == 2 ) { s -> rip_offset = 1 ; } gen_lea_modrm ( env , s , modrm ) ; opreg = OR_TMP0 ; } else { opreg = ( modrm & 7 ) | REX_B ( s ) ; } if ( shift == 0 ) { gen_shift ( s , op , ot , opreg , OR_ECX ) ; } else { if ( shift == 2 ) { shift = cpu_ldub_code ( env , s -> pc ++ ) ; } gen_shifti ( s , op , ot , opreg , shift ) ; } } break ; case 0xd0 : case 0xd1 : shift = 1 ; goto grp2 ; case 0xd2 : case 0xd3 : shift = 0 ; goto grp2 ; case 0x1a4 : op = 0 ; shift = 1 ; goto do_shiftd ; case 0x1a5 : op = 0 ; shift = 0 ; goto do_shiftd ; case 0x1ac : op = 1 ; shift = 1 ; goto do_shiftd ; case 0x1ad : op = 1 ; shift = 0 ; do_shiftd : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; opreg = OR_TMP0 ; } else { opreg = rm ; } gen_op_mov_v_reg ( ot , cpu_T1 , reg ) ; if ( shift ) { TCGv imm = tcg_const_tl ( cpu_ldub_code ( env , s -> pc ++ ) ) ; gen_shiftd_rm_T1 ( s , ot , opreg , op , imm ) ; tcg_temp_free ( imm ) ; } else { gen_shiftd_rm_T1 ( s , ot , opreg , op , cpu_regs [ R_ECX ] ) ; } break ; case 0xd8 ... 0xdf : if ( s -> flags & ( HF_EM_MASK | HF_TS_MASK ) ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = modrm & 7 ; op = ( ( b & 7 ) << 3 ) | ( ( modrm >> 3 ) & 7 ) ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; switch ( op ) { case 0x00 ... 0x07 : case 0x10 ... 0x17 : case 0x20 ... 0x27 : case 0x30 ... 0x37 : { int op1 ; op1 = op & 7 ; switch ( op >> 4 ) { case 0 : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_flds_FT0 ( cpu_env , cpu_tmp2_i32 ) ; break ; case 1 : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_fildl_FT0 ( cpu_env , cpu_tmp2_i32 ) ; break ; case 2 : tcg_gen_qemu_ld_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; gen_helper_fldl_FT0 ( cpu_env , cpu_tmp1_i64 ) ; break ; case 3 : default : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LESW ) ; gen_helper_fildl_FT0 ( cpu_env , cpu_tmp2_i32 ) ; break ; } gen_helper_fp_arith_ST0_FT0 ( op1 ) ; if ( op1 == 3 ) { gen_helper_fpop ( cpu_env ) ; } } break ; case 0x08 : case 0x0a : case 0x0b : case 0x18 ... 0x1b : case 0x28 ... 0x2b : case 0x38 ... 0x3b : switch ( op & 7 ) { case 0 : switch ( op >> 4 ) { case 0 : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_flds_ST0 ( cpu_env , cpu_tmp2_i32 ) ; break ; case 1 : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_fildl_ST0 ( cpu_env , cpu_tmp2_i32 ) ; break ; case 2 : tcg_gen_qemu_ld_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; gen_helper_fldl_ST0 ( cpu_env , cpu_tmp1_i64 ) ; break ; case 3 : default : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LESW ) ; gen_helper_fildl_ST0 ( cpu_env , cpu_tmp2_i32 ) ; break ; } break ; case 1 : switch ( op >> 4 ) { case 1 : gen_helper_fisttl_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; break ; case 2 : gen_helper_fisttll_ST0 ( cpu_tmp1_i64 , cpu_env ) ; tcg_gen_qemu_st_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; break ; case 3 : default : gen_helper_fistt_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; break ; } gen_helper_fpop ( cpu_env ) ; break ; default : switch ( op >> 4 ) { case 0 : gen_helper_fsts_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; break ; case 1 : gen_helper_fistl_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; break ; case 2 : gen_helper_fstl_ST0 ( cpu_tmp1_i64 , cpu_env ) ; tcg_gen_qemu_st_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; break ; case 3 : default : gen_helper_fist_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; break ; } if ( ( op & 7 ) == 3 ) gen_helper_fpop ( cpu_env ) ; break ; } break ; case 0x0c : gen_helper_fldenv ( cpu_env , cpu_A0 , tcg_const_i32 ( dflag - 1 ) ) ; break ; case 0x0d : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; gen_helper_fldcw ( cpu_env , cpu_tmp2_i32 ) ; break ; case 0x0e : gen_helper_fstenv ( cpu_env , cpu_A0 , tcg_const_i32 ( dflag - 1 ) ) ; break ; case 0x0f : gen_helper_fnstcw ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; break ; case 0x1d : gen_helper_fldt_ST0 ( cpu_env , cpu_A0 ) ; break ; case 0x1f : gen_helper_fstt_ST0 ( cpu_env , cpu_A0 ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x2c : gen_helper_frstor ( cpu_env , cpu_A0 , tcg_const_i32 ( dflag - 1 ) ) ; break ; case 0x2e : gen_helper_fsave ( cpu_env , cpu_A0 , tcg_const_i32 ( dflag - 1 ) ) ; break ; case 0x2f : gen_helper_fnstsw ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; break ; case 0x3c : gen_helper_fbld_ST0 ( cpu_env , cpu_A0 ) ; break ; case 0x3e : gen_helper_fbst_ST0 ( cpu_env , cpu_A0 ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x3d : tcg_gen_qemu_ld_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; gen_helper_fildll_ST0 ( cpu_env , cpu_tmp1_i64 ) ; break ; case 0x3f : gen_helper_fistll_ST0 ( cpu_tmp1_i64 , cpu_env ) ; tcg_gen_qemu_st_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; gen_helper_fpop ( cpu_env ) ; break ; default : goto unknown_op ; } } else { opreg = rm ; switch ( op ) { case 0x08 : gen_helper_fpush ( cpu_env ) ; gen_helper_fmov_ST0_STN ( cpu_env , tcg_const_i32 ( ( opreg + 1 ) & 7 ) ) ; break ; case 0x09 : case 0x29 : case 0x39 : gen_helper_fxchg_ST0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; break ; case 0x0a : switch ( rm ) { case 0 : gen_helper_fwait ( cpu_env ) ; break ; default : goto unknown_op ; } break ; case 0x0c : switch ( rm ) { case 0 : gen_helper_fchs_ST0 ( cpu_env ) ; break ; case 1 : gen_helper_fabs_ST0 ( cpu_env ) ; break ; case 4 : gen_helper_fldz_FT0 ( cpu_env ) ; gen_helper_fcom_ST0_FT0 ( cpu_env ) ; break ; case 5 : gen_helper_fxam_ST0 ( cpu_env ) ; break ; default : goto unknown_op ; } break ; case 0x0d : { switch ( rm ) { case 0 : gen_helper_fpush ( cpu_env ) ; gen_helper_fld1_ST0 ( cpu_env ) ; break ; case 1 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldl2t_ST0 ( cpu_env ) ; break ; case 2 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldl2e_ST0 ( cpu_env ) ; break ; case 3 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldpi_ST0 ( cpu_env ) ; break ; case 4 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldlg2_ST0 ( cpu_env ) ; break ; case 5 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldln2_ST0 ( cpu_env ) ; break ; case 6 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldz_ST0 ( cpu_env ) ; break ; default : goto unknown_op ; } } break ; case 0x0e : switch ( rm ) { case 0 : gen_helper_f2xm1 ( cpu_env ) ; break ; case 1 : gen_helper_fyl2x ( cpu_env ) ; break ; case 2 : gen_helper_fptan ( cpu_env ) ; break ; case 3 : gen_helper_fpatan ( cpu_env ) ; break ; case 4 : gen_helper_fxtract ( cpu_env ) ; break ; case 5 : gen_helper_fprem1 ( cpu_env ) ; break ; case 6 : gen_helper_fdecstp ( cpu_env ) ; break ; default : case 7 : gen_helper_fincstp ( cpu_env ) ; break ; } break ; case 0x0f : switch ( rm ) { case 0 : gen_helper_fprem ( cpu_env ) ; break ; case 1 : gen_helper_fyl2xp1 ( cpu_env ) ; break ; case 2 : gen_helper_fsqrt ( cpu_env ) ; break ; case 3 : gen_helper_fsincos ( cpu_env ) ; break ; case 5 : gen_helper_fscale ( cpu_env ) ; break ; case 4 : gen_helper_frndint ( cpu_env ) ; break ; case 6 : gen_helper_fsin ( cpu_env ) ; break ; default : case 7 : gen_helper_fcos ( cpu_env ) ; break ; } break ; case 0x00 : case 0x01 : case 0x04 ... 0x07 : case 0x20 : case 0x21 : case 0x24 ... 0x27 : case 0x30 : case 0x31 : case 0x34 ... 0x37 : { int op1 ; op1 = op & 7 ; if ( op >= 0x20 ) { gen_helper_fp_arith_STN_ST0 ( op1 , opreg ) ; if ( op >= 0x30 ) gen_helper_fpop ( cpu_env ) ; } else { gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fp_arith_ST0_FT0 ( op1 ) ; } } break ; case 0x02 : case 0x22 : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fcom_ST0_FT0 ( cpu_env ) ; break ; case 0x03 : case 0x23 : case 0x32 : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fcom_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x15 : switch ( rm ) { case 1 : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( 1 ) ) ; gen_helper_fucom_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; break ; default : goto unknown_op ; } break ; case 0x1c : switch ( rm ) { case 0 : break ; case 1 : break ; case 2 : gen_helper_fclex ( cpu_env ) ; break ; case 3 : gen_helper_fninit ( cpu_env ) ; break ; case 4 : break ; default : goto unknown_op ; } break ; case 0x1d : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fucomi_ST0_FT0 ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x1e : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fcomi_ST0_FT0 ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x28 : gen_helper_ffree_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; break ; case 0x2a : gen_helper_fmov_STN_ST0 ( cpu_env , tcg_const_i32 ( opreg ) ) ; break ; case 0x2b : case 0x0b : case 0x3a : case 0x3b : gen_helper_fmov_STN_ST0 ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x2c : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fucom_ST0_FT0 ( cpu_env ) ; break ; case 0x2d : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fucom_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x33 : switch ( rm ) { case 1 : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( 1 ) ) ; gen_helper_fcom_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; break ; default : goto unknown_op ; } break ; case 0x38 : gen_helper_ffree_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x3c : switch ( rm ) { case 0 : gen_helper_fnstsw ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_extu_i32_tl ( cpu_T0 , cpu_tmp2_i32 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; break ; default : goto unknown_op ; } break ; case 0x3d : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fucomi_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x3e : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fcomi_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x10 ... 0x13 : case 0x18 ... 0x1b : { int op1 ; TCGLabel * l1 ; static const uint8_t fcmov_cc [ 8 ] = { ( JCC_B << 1 ) , ( JCC_Z << 1 ) , ( JCC_BE << 1 ) , ( JCC_P << 1 ) , } ; if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } op1 = fcmov_cc [ op & 3 ] | ( ( ( op >> 3 ) & 1 ) ^ 1 ) ; l1 = gen_new_label ( ) ; gen_jcc1_noeob ( s , op1 , l1 ) ; gen_helper_fmov_ST0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_set_label ( l1 ) ; } break ; default : goto unknown_op ; } } break ; case 0xa4 : case 0xa5 : ot = mo_b_d ( b , dflag ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_movs ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_movs ( s , ot ) ; } break ; case 0xaa : case 0xab : ot = mo_b_d ( b , dflag ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_stos ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_stos ( s , ot ) ; } break ; case 0xac : case 0xad : ot = mo_b_d ( b , dflag ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_lods ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_lods ( s , ot ) ; } break ; case 0xae : case 0xaf : ot = mo_b_d ( b , dflag ) ; if ( prefixes & PREFIX_REPNZ ) { gen_repz_scas ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base , 1 ) ; } else if ( prefixes & PREFIX_REPZ ) { gen_repz_scas ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base , 0 ) ; } else { gen_scas ( s , ot ) ; } break ; case 0xa6 : case 0xa7 : ot = mo_b_d ( b , dflag ) ; if ( prefixes & PREFIX_REPNZ ) { gen_repz_cmps ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base , 1 ) ; } else if ( prefixes & PREFIX_REPZ ) { gen_repz_cmps ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base , 0 ) ; } else { gen_cmps ( s , ot ) ; } break ; case 0x6c : case 0x6d : ot = mo_b_d32 ( b , dflag ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_regs [ R_EDX ] ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , SVM_IOIO_TYPE_MASK | svm_is_rep ( prefixes ) | 4 ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_ins ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_ins ( s , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_jmp ( s , s -> pc - s -> cs_base ) ; } } break ; case 0x6e : case 0x6f : ot = mo_b_d32 ( b , dflag ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_regs [ R_EDX ] ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , svm_is_rep ( prefixes ) | 4 ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_outs ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_outs ( s , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_jmp ( s , s -> pc - s -> cs_base ) ; } } break ; case 0xe4 : case 0xe5 : ot = mo_b_d32 ( b , dflag ) ; val = cpu_ldub_code ( env , s -> pc ++ ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , SVM_IOIO_TYPE_MASK | svm_is_rep ( prefixes ) ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } tcg_gen_movi_i32 ( cpu_tmp2_i32 , val ) ; gen_helper_in_func ( ot , cpu_T1 , cpu_tmp2_i32 ) ; gen_op_mov_reg_v ( ot , R_EAX , cpu_T1 ) ; gen_bpt_io ( s , cpu_tmp2_i32 , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0xe6 : case 0xe7 : ot = mo_b_d32 ( b , dflag ) ; val = cpu_ldub_code ( env , s -> pc ++ ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , svm_is_rep ( prefixes ) ) ; gen_op_mov_v_reg ( ot , cpu_T1 , R_EAX ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } tcg_gen_movi_i32 ( cpu_tmp2_i32 , val ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_T1 ) ; gen_helper_out_func ( ot , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; gen_bpt_io ( s , cpu_tmp2_i32 , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0xec : case 0xed : ot = mo_b_d32 ( b , dflag ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_regs [ R_EDX ] ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , SVM_IOIO_TYPE_MASK | svm_is_rep ( prefixes ) ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_in_func ( ot , cpu_T1 , cpu_tmp2_i32 ) ; gen_op_mov_reg_v ( ot , R_EAX , cpu_T1 ) ; gen_bpt_io ( s , cpu_tmp2_i32 , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0xee : case 0xef : ot = mo_b_d32 ( b , dflag ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_regs [ R_EDX ] ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , svm_is_rep ( prefixes ) ) ; gen_op_mov_v_reg ( ot , cpu_T1 , R_EAX ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_T1 ) ; gen_helper_out_func ( ot , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; gen_bpt_io ( s , cpu_tmp2_i32 , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0xc2 : val = cpu_ldsw_code ( env , s -> pc ) ; s -> pc += 2 ; ot = gen_pop_T0 ( s ) ; gen_stack_update ( s , val + ( 1 << ot ) ) ; gen_op_jmp_v ( cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_eob ( s ) ; break ; case 0xc3 : ot = gen_pop_T0 ( s ) ; gen_pop_update ( s , ot ) ; gen_op_jmp_v ( cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_eob ( s ) ; break ; case 0xca : val = cpu_ldsw_code ( env , s -> pc ) ; s -> pc += 2 ; do_lret : if ( s -> pe && ! s -> vm86 ) { gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_lret_protected ( cpu_env , tcg_const_i32 ( dflag - 1 ) , tcg_const_i32 ( val ) ) ; } else { gen_stack_A0 ( s ) ; gen_op_ld_v ( s , dflag , cpu_T0 , cpu_A0 ) ; gen_op_jmp_v ( cpu_T0 ) ; gen_add_A0_im ( s , 1 << dflag ) ; gen_op_ld_v ( s , dflag , cpu_T0 , cpu_A0 ) ; gen_op_movl_seg_T0_vm ( R_CS ) ; gen_stack_update ( s , val + ( 2 << dflag ) ) ; } gen_eob ( s ) ; break ; case 0xcb : val = 0 ; goto do_lret ; case 0xcf : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_IRET ) ; if ( ! s -> pe ) { gen_helper_iret_real ( cpu_env , tcg_const_i32 ( dflag - 1 ) ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; } else if ( s -> vm86 ) { if ( s -> iopl != 3 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_helper_iret_real ( cpu_env , tcg_const_i32 ( dflag - 1 ) ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; } } else { gen_helper_iret_protected ( cpu_env , tcg_const_i32 ( dflag - 1 ) , tcg_const_i32 ( s -> pc - s -> cs_base ) ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; } gen_eob ( s ) ; break ; case 0xe8 : { if ( dflag != MO_16 ) { tval = ( int32_t ) insn_get ( env , s , MO_32 ) ; } else { tval = ( int16_t ) insn_get ( env , s , MO_16 ) ; } next_eip = s -> pc - s -> cs_base ; tval += next_eip ; if ( dflag == MO_16 ) { tval &= 0xffff ; } else if ( ! CODE64 ( s ) ) { tval &= 0xffffffff ; } tcg_gen_movi_tl ( cpu_T0 , next_eip ) ; gen_push_v ( s , cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_jmp ( s , tval ) ; } break ; case 0x9a : { unsigned int selector , offset ; if ( CODE64 ( s ) ) goto illegal_op ; ot = dflag ; offset = insn_get ( env , s , ot ) ; selector = insn_get ( env , s , MO_16 ) ; tcg_gen_movi_tl ( cpu_T0 , selector ) ; tcg_gen_movi_tl ( cpu_T1 , offset ) ; } goto do_lcall ; case 0xe9 : if ( dflag != MO_16 ) { tval = ( int32_t ) insn_get ( env , s , MO_32 ) ; } else { tval = ( int16_t ) insn_get ( env , s , MO_16 ) ; } tval += s -> pc - s -> cs_base ; if ( dflag == MO_16 ) { tval &= 0xffff ; } else if ( ! CODE64 ( s ) ) { tval &= 0xffffffff ; } gen_bnd_jmp ( s ) ; gen_jmp ( s , tval ) ; break ; case 0xea : { unsigned int selector , offset ; if ( CODE64 ( s ) ) goto illegal_op ; ot = dflag ; offset = insn_get ( env , s , ot ) ; selector = insn_get ( env , s , MO_16 ) ; tcg_gen_movi_tl ( cpu_T0 , selector ) ; tcg_gen_movi_tl ( cpu_T1 , offset ) ; } goto do_ljmp ; case 0xeb : tval = ( int8_t ) insn_get ( env , s , MO_8 ) ; tval += s -> pc - s -> cs_base ; if ( dflag == MO_16 ) { tval &= 0xffff ; } gen_jmp ( s , tval ) ; break ; case 0x70 ... 0x7f : tval = ( int8_t ) insn_get ( env , s , MO_8 ) ; goto do_jcc ; case 0x180 ... 0x18f : if ( dflag != MO_16 ) { tval = ( int32_t ) insn_get ( env , s , MO_32 ) ; } else { tval = ( int16_t ) insn_get ( env , s , MO_16 ) ; } do_jcc : next_eip = s -> pc - s -> cs_base ; tval += next_eip ; if ( dflag == MO_16 ) { tval &= 0xffff ; } gen_bnd_jmp ( s ) ; gen_jcc ( s , b , tval , next_eip ) ; break ; case 0x190 ... 0x19f : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; gen_setcc1 ( s , b , cpu_T0 ) ; gen_ldst_modrm ( env , s , modrm , MO_8 , OR_TMP0 , 1 ) ; break ; case 0x140 ... 0x14f : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_cmovcc1 ( env , s , ot , b , modrm , reg ) ; break ; case 0x9c : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_PUSHF ) ; if ( s -> vm86 && s -> iopl != 3 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_update_cc_op ( s ) ; gen_helper_read_eflags ( cpu_T0 , cpu_env ) ; gen_push_v ( s , cpu_T0 ) ; } break ; case 0x9d : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_POPF ) ; if ( s -> vm86 && s -> iopl != 3 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { ot = gen_pop_T0 ( s ) ; if ( s -> cpl == 0 ) { if ( dflag != MO_16 ) { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK ) ) ) ; } else { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK ) & 0xffff ) ) ; } } else { if ( s -> cpl <= s -> iopl ) { if ( dflag != MO_16 ) { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK ) ) ) ; } else { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK ) & 0xffff ) ) ; } } else { if ( dflag != MO_16 ) { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK ) ) ) ; } else { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK ) & 0xffff ) ) ; } } } gen_pop_update ( s , ot ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } break ; case 0x9e : if ( CODE64 ( s ) && ! ( s -> cpuid_ext3_features & CPUID_EXT3_LAHF_LM ) ) goto illegal_op ; gen_op_mov_v_reg ( MO_8 , cpu_T0 , R_AH ) ; gen_compute_eflags ( s ) ; tcg_gen_andi_tl ( cpu_cc_src , cpu_cc_src , CC_O ) ; tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , CC_S | CC_Z | CC_A | CC_P | CC_C ) ; tcg_gen_or_tl ( cpu_cc_src , cpu_cc_src , cpu_T0 ) ; break ; case 0x9f : if ( CODE64 ( s ) && ! ( s -> cpuid_ext3_features & CPUID_EXT3_LAHF_LM ) ) goto illegal_op ; gen_compute_eflags ( s ) ; tcg_gen_ori_tl ( cpu_T0 , cpu_cc_src , 0x02 ) ; gen_op_mov_reg_v ( MO_8 , R_AH , cpu_T0 ) ; break ; case 0xf5 : gen_compute_eflags ( s ) ; tcg_gen_xori_tl ( cpu_cc_src , cpu_cc_src , CC_C ) ; break ; case 0xf8 : gen_compute_eflags ( s ) ; tcg_gen_andi_tl ( cpu_cc_src , cpu_cc_src , ~ CC_C ) ; break ; case 0xf9 : gen_compute_eflags ( s ) ; tcg_gen_ori_tl ( cpu_cc_src , cpu_cc_src , CC_C ) ; break ; case 0xfc : tcg_gen_movi_i32 ( cpu_tmp2_i32 , 1 ) ; tcg_gen_st_i32 ( cpu_tmp2_i32 , cpu_env , offsetof ( CPUX86State , df ) ) ; break ; case 0xfd : tcg_gen_movi_i32 ( cpu_tmp2_i32 , - 1 ) ; tcg_gen_st_i32 ( cpu_tmp2_i32 , cpu_env , offsetof ( CPUX86State , df ) ) ; break ; case 0x1ba : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; op = ( modrm >> 3 ) & 7 ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod != 3 ) { s -> rip_offset = 1 ; gen_lea_modrm ( env , s , modrm ) ; if ( ! ( s -> prefix & PREFIX_LOCK ) ) { gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; } } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; } val = cpu_ldub_code ( env , s -> pc ++ ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; if ( op < 4 ) goto unknown_op ; op -= 4 ; goto bt_op ; case 0x1a3 : op = 0 ; goto do_btx ; case 0x1ab : op = 1 ; goto do_btx ; case 0x1b3 : op = 2 ; goto do_btx ; case 0x1bb : op = 3 ; do_btx : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; gen_op_mov_v_reg ( MO_32 , cpu_T1 , reg ) ; if ( mod != 3 ) { AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; gen_exts ( ot , cpu_T1 ) ; tcg_gen_sari_tl ( cpu_tmp0 , cpu_T1 , 3 + ot ) ; tcg_gen_shli_tl ( cpu_tmp0 , cpu_tmp0 , ot ) ; tcg_gen_add_tl ( cpu_A0 , gen_lea_modrm_1 ( a ) , cpu_tmp0 ) ; gen_lea_v_seg ( s , s -> aflag , cpu_A0 , a . def_seg , s -> override ) ; if ( ! ( s -> prefix & PREFIX_LOCK ) ) { gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; } } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; } bt_op : tcg_gen_andi_tl ( cpu_T1 , cpu_T1 , ( 1 << ( 3 + ot ) ) - 1 ) ; tcg_gen_movi_tl ( cpu_tmp0 , 1 ) ; tcg_gen_shl_tl ( cpu_tmp0 , cpu_tmp0 , cpu_T1 ) ; if ( s -> prefix & PREFIX_LOCK ) { switch ( op ) { case 0 : gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; break ; case 1 : tcg_gen_atomic_fetch_or_tl ( cpu_T0 , cpu_A0 , cpu_tmp0 , s -> mem_index , ot | MO_LE ) ; break ; case 2 : tcg_gen_not_tl ( cpu_tmp0 , cpu_tmp0 ) ; tcg_gen_atomic_fetch_and_tl ( cpu_T0 , cpu_A0 , cpu_tmp0 , s -> mem_index , ot | MO_LE ) ; break ; default : case 3 : tcg_gen_atomic_fetch_xor_tl ( cpu_T0 , cpu_A0 , cpu_tmp0 , s -> mem_index , ot | MO_LE ) ; break ; } tcg_gen_shr_tl ( cpu_tmp4 , cpu_T0 , cpu_T1 ) ; } else { tcg_gen_shr_tl ( cpu_tmp4 , cpu_T0 , cpu_T1 ) ; switch ( op ) { case 0 : break ; case 1 : tcg_gen_or_tl ( cpu_T0 , cpu_T0 , cpu_tmp0 ) ; break ; case 2 : tcg_gen_andc_tl ( cpu_T0 , cpu_T0 , cpu_tmp0 ) ; break ; default : case 3 : tcg_gen_xor_tl ( cpu_T0 , cpu_T0 , cpu_tmp0 ) ; break ; } if ( op != 0 ) { if ( mod != 3 ) { gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } } } switch ( s -> cc_op ) { case CC_OP_MULB ... CC_OP_MULQ : case CC_OP_ADDB ... CC_OP_ADDQ : case CC_OP_ADCB ... CC_OP_ADCQ : case CC_OP_SUBB ... CC_OP_SUBQ : case CC_OP_SBBB ... CC_OP_SBBQ : case CC_OP_LOGICB ... CC_OP_LOGICQ : case CC_OP_INCB ... CC_OP_INCQ : case CC_OP_DECB ... CC_OP_DECQ : case CC_OP_SHLB ... CC_OP_SHLQ : case CC_OP_SARB ... CC_OP_SARQ : case CC_OP_BMILGB ... CC_OP_BMILGQ : tcg_gen_mov_tl ( cpu_cc_src , cpu_tmp4 ) ; set_cc_op ( s , ( ( s -> cc_op - CC_OP_MULB ) & 3 ) + CC_OP_SARB ) ; break ; default : gen_compute_eflags ( s ) ; tcg_gen_deposit_tl ( cpu_cc_src , cpu_cc_src , cpu_tmp4 , ctz32 ( CC_C ) , 1 ) ; break ; } break ; case 0x1bc : case 0x1bd : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; gen_extu ( ot , cpu_T0 ) ; if ( ( prefixes & PREFIX_REPZ ) && ( b & 1 ? s -> cpuid_ext3_features & CPUID_EXT3_ABM : s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI1 ) ) { int size = 8 << ot ; tcg_gen_mov_tl ( cpu_cc_src , cpu_T0 ) ; if ( b & 1 ) { tcg_gen_clzi_tl ( cpu_T0 , cpu_T0 , TARGET_LONG_BITS ) ; tcg_gen_subi_tl ( cpu_T0 , cpu_T0 , TARGET_LONG_BITS - size ) ; } else { tcg_gen_ctzi_tl ( cpu_T0 , cpu_T0 , size ) ; } gen_op_update1_cc ( ) ; set_cc_op ( s , CC_OP_BMILGB + ot ) ; } else { tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; set_cc_op ( s , CC_OP_LOGICB + ot ) ; if ( b & 1 ) { tcg_gen_xori_tl ( cpu_T1 , cpu_regs [ reg ] , TARGET_LONG_BITS - 1 ) ; tcg_gen_clz_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; tcg_gen_xori_tl ( cpu_T0 , cpu_T0 , TARGET_LONG_BITS - 1 ) ; } else { tcg_gen_ctz_tl ( cpu_T0 , cpu_T0 , cpu_regs [ reg ] ) ; } } gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; break ; case 0x27 : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_helper_daa ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x2f : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_helper_das ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x37 : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_helper_aaa ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x3f : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_helper_aas ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0xd4 : if ( CODE64 ( s ) ) goto illegal_op ; val = cpu_ldub_code ( env , s -> pc ++ ) ; if ( val == 0 ) { gen_exception ( s , EXCP00_DIVZ , pc_start - s -> cs_base ) ; } else { gen_helper_aam ( cpu_env , tcg_const_i32 ( val ) ) ; set_cc_op ( s , CC_OP_LOGICB ) ; } break ; case 0xd5 : if ( CODE64 ( s ) ) goto illegal_op ; val = cpu_ldub_code ( env , s -> pc ++ ) ; gen_helper_aad ( cpu_env , tcg_const_i32 ( val ) ) ; set_cc_op ( s , CC_OP_LOGICB ) ; break ; case 0x90 : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } if ( REX_B ( s ) ) { goto do_xchg_reg_eax ; } if ( prefixes & PREFIX_REPZ ) { gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_pause ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; s -> is_jmp = DISAS_TB_JUMP ; } break ; case 0x9b : if ( ( s -> flags & ( HF_MP_MASK | HF_TS_MASK ) ) == ( HF_MP_MASK | HF_TS_MASK ) ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; } else { gen_helper_fwait ( cpu_env ) ; } break ; case 0xcc : gen_interrupt ( s , EXCP03_INT3 , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; break ; case 0xcd : val = cpu_ldub_code ( env , s -> pc ++ ) ; if ( s -> vm86 && s -> iopl != 3 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_interrupt ( s , val , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } break ; case 0xce : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_into ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; break ; # ifdef WANT_ICEBP case 0xf1 : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_ICEBP ) ; # if 1 gen_debug ( s , pc_start - s -> cs_base ) ; # else tb_flush ( CPU ( x86_env_get_cpu ( env ) ) ) ; qemu_set_log ( CPU_LOG_INT | CPU_LOG_TB_IN_ASM ) ; # endif break ; # endif case 0xfa : if ( ! s -> vm86 ) { if ( s -> cpl <= s -> iopl ) { gen_helper_cli ( cpu_env ) ; } else { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } } else { if ( s -> iopl == 3 ) { gen_helper_cli ( cpu_env ) ; } else { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } } break ; case 0xfb : if ( s -> vm86 ? s -> iopl == 3 : s -> cpl <= s -> iopl ) { gen_helper_sti ( cpu_env ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob_inhibit_irq ( s , true ) ; } else { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } break ; case 0x62 : if ( CODE64 ( s ) ) goto illegal_op ; ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( modrm >> 3 ) & 7 ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; gen_op_mov_v_reg ( ot , cpu_T0 , reg ) ; gen_lea_modrm ( env , s , modrm ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; if ( ot == MO_16 ) { gen_helper_boundw ( cpu_env , cpu_A0 , cpu_tmp2_i32 ) ; } else { gen_helper_boundl ( cpu_env , cpu_A0 , cpu_tmp2_i32 ) ; } break ; case 0x1c8 ... 0x1cf : reg = ( b & 7 ) | REX_B ( s ) ; # ifdef TARGET_X86_64 if ( dflag == MO_64 ) { gen_op_mov_v_reg ( MO_64 , cpu_T0 , reg ) ; tcg_gen_bswap64_i64 ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_64 , reg , cpu_T0 ) ; } else # endif { gen_op_mov_v_reg ( MO_32 , cpu_T0 , reg ) ; tcg_gen_ext32u_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_bswap32_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_32 , reg , cpu_T0 ) ; } break ; case 0xd6 : if ( CODE64 ( s ) ) goto illegal_op ; gen_compute_eflags_c ( s , cpu_T0 ) ; tcg_gen_neg_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_8 , R_EAX , cpu_T0 ) ; break ; case 0xe0 : case 0xe1 : case 0xe2 : case 0xe3 : { TCGLabel * l1 , * l2 , * l3 ; tval = ( int8_t ) insn_get ( env , s , MO_8 ) ; next_eip = s -> pc - s -> cs_base ; tval += next_eip ; if ( dflag == MO_16 ) { tval &= 0xffff ; } l1 = gen_new_label ( ) ; l2 = gen_new_label ( ) ; l3 = gen_new_label ( ) ; b &= 3 ; switch ( b ) { case 0 : case 1 : gen_op_add_reg_im ( s -> aflag , R_ECX , - 1 ) ; gen_op_jz_ecx ( s -> aflag , l3 ) ; gen_jcc1 ( s , ( JCC_Z << 1 ) | ( b ^ 1 ) , l1 ) ; break ; case 2 : gen_op_add_reg_im ( s -> aflag , R_ECX , - 1 ) ; gen_op_jnz_ecx ( s -> aflag , l1 ) ; break ; default : case 3 : gen_op_jz_ecx ( s -> aflag , l1 ) ; break ; } gen_set_label ( l3 ) ; gen_jmp_im ( next_eip ) ; tcg_gen_br ( l2 ) ; gen_set_label ( l1 ) ; gen_jmp_im ( tval ) ; gen_set_label ( l2 ) ; gen_eob ( s ) ; } break ; case 0x130 : case 0x132 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; if ( b & 2 ) { gen_helper_rdmsr ( cpu_env ) ; } else { gen_helper_wrmsr ( cpu_env ) ; } } break ; case 0x131 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } gen_helper_rdtsc ( cpu_env ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0x133 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_rdpmc ( cpu_env ) ; break ; case 0x134 : if ( CODE64 ( s ) && env -> cpuid_vendor1 != CPUID_VENDOR_INTEL_1 ) goto illegal_op ; if ( ! s -> pe ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_helper_sysenter ( cpu_env ) ; gen_eob ( s ) ; } break ; case 0x135 : if ( CODE64 ( s ) && env -> cpuid_vendor1 != CPUID_VENDOR_INTEL_1 ) goto illegal_op ; if ( ! s -> pe ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_helper_sysexit ( cpu_env , tcg_const_i32 ( dflag - 1 ) ) ; gen_eob ( s ) ; } break ; # ifdef TARGET_X86_64 case 0x105 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_syscall ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; gen_eob_worker ( s , false , true ) ; break ; case 0x107 : if ( ! s -> pe ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_helper_sysret ( cpu_env , tcg_const_i32 ( dflag - 1 ) ) ; if ( s -> lma ) { set_cc_op ( s , CC_OP_EFLAGS ) ; } gen_eob_worker ( s , false , true ) ; } break ; # endif case 0x1a2 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_cpuid ( cpu_env ) ; break ; case 0xf4 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_hlt ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; s -> is_jmp = DISAS_TB_JUMP ; } break ; case 0x100 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; op = ( modrm >> 3 ) & 7 ; switch ( op ) { case 0 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; gen_svm_check_intercept ( s , pc_start , SVM_EXIT_LDTR_READ ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , ldt . selector ) ) ; ot = mod == 3 ? dflag : MO_16 ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; break ; case 2 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_LDTR_WRITE ) ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_lldt ( cpu_env , cpu_tmp2_i32 ) ; } break ; case 1 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; gen_svm_check_intercept ( s , pc_start , SVM_EXIT_TR_READ ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , tr . selector ) ) ; ot = mod == 3 ? dflag : MO_16 ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; break ; case 3 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_TR_WRITE ) ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_ltr ( cpu_env , cpu_tmp2_i32 ) ; } break ; case 4 : case 5 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; gen_update_cc_op ( s ) ; if ( op == 4 ) { gen_helper_verr ( cpu_env , cpu_T0 ) ; } else { gen_helper_verw ( cpu_env , cpu_T0 ) ; } set_cc_op ( s , CC_OP_EFLAGS ) ; break ; default : goto unknown_op ; } break ; case 0x101 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; switch ( modrm ) { CASE_MODRM_MEM_OP ( 0 ) : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_GDTR_READ ) ; gen_lea_modrm ( env , s , modrm ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , gdt . limit ) ) ; gen_op_st_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; gen_add_A0_im ( s , 2 ) ; tcg_gen_ld_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , gdt . base ) ) ; if ( dflag == MO_16 ) { tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , 0xffffff ) ; } gen_op_st_v ( s , CODE64 ( s ) + MO_32 , cpu_T0 , cpu_A0 ) ; break ; case 0xc8 : if ( ! ( s -> cpuid_ext_features & CPUID_EXT_MONITOR ) || s -> cpl != 0 ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; tcg_gen_mov_tl ( cpu_A0 , cpu_regs [ R_EAX ] ) ; gen_extu ( s -> aflag , cpu_A0 ) ; gen_add_A0_ds_seg ( s ) ; gen_helper_monitor ( cpu_env , cpu_A0 ) ; break ; case 0xc9 : if ( ! ( s -> cpuid_ext_features & CPUID_EXT_MONITOR ) || s -> cpl != 0 ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_mwait ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; gen_eob ( s ) ; break ; case 0xca : if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_SMAP ) || s -> cpl != 0 ) { goto illegal_op ; } gen_helper_clac ( cpu_env ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; case 0xcb : if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_SMAP ) || s -> cpl != 0 ) { goto illegal_op ; } gen_helper_stac ( cpu_env ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; CASE_MODRM_MEM_OP ( 1 ) : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_IDTR_READ ) ; gen_lea_modrm ( env , s , modrm ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , idt . limit ) ) ; gen_op_st_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; gen_add_A0_im ( s , 2 ) ; tcg_gen_ld_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , idt . base ) ) ; if ( dflag == MO_16 ) { tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , 0xffffff ) ; } gen_op_st_v ( s , CODE64 ( s ) + MO_32 , cpu_T0 , cpu_A0 ) ; break ; case 0xd0 : if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( s -> prefix & ( PREFIX_LOCK | PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_regs [ R_ECX ] ) ; gen_helper_xgetbv ( cpu_tmp1_i64 , cpu_env , cpu_tmp2_i32 ) ; tcg_gen_extr_i64_tl ( cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] , cpu_tmp1_i64 ) ; break ; case 0xd1 : if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( s -> prefix & ( PREFIX_LOCK | PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_regs [ R_ECX ] ) ; gen_helper_xsetbv ( cpu_env , cpu_tmp2_i32 , cpu_tmp1_i64 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; case 0xd8 : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_vmrun ( cpu_env , tcg_const_i32 ( s -> aflag - 1 ) , tcg_const_i32 ( s -> pc - pc_start ) ) ; tcg_gen_exit_tb ( 0 ) ; s -> is_jmp = DISAS_TB_JUMP ; break ; case 0xd9 : if ( ! ( s -> flags & HF_SVME_MASK ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_vmmcall ( cpu_env ) ; break ; case 0xda : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_vmload ( cpu_env , tcg_const_i32 ( s -> aflag - 1 ) ) ; break ; case 0xdb : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_vmsave ( cpu_env , tcg_const_i32 ( s -> aflag - 1 ) ) ; break ; case 0xdc : if ( ( ! ( s -> flags & HF_SVME_MASK ) && ! ( s -> cpuid_ext3_features & CPUID_EXT3_SKINIT ) ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_stgi ( cpu_env ) ; break ; case 0xdd : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_clgi ( cpu_env ) ; break ; case 0xde : if ( ( ! ( s -> flags & HF_SVME_MASK ) && ! ( s -> cpuid_ext3_features & CPUID_EXT3_SKINIT ) ) || ! s -> pe ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_skinit ( cpu_env ) ; break ; case 0xdf : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_invlpga ( cpu_env , tcg_const_i32 ( s -> aflag - 1 ) ) ; break ; CASE_MODRM_MEM_OP ( 2 ) : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_svm_check_intercept ( s , pc_start , SVM_EXIT_GDTR_WRITE ) ; gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , MO_16 , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 2 ) ; gen_op_ld_v ( s , CODE64 ( s ) + MO_32 , cpu_T0 , cpu_A0 ) ; if ( dflag == MO_16 ) { tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , 0xffffff ) ; } tcg_gen_st_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , gdt . base ) ) ; tcg_gen_st32_tl ( cpu_T1 , cpu_env , offsetof ( CPUX86State , gdt . limit ) ) ; break ; CASE_MODRM_MEM_OP ( 3 ) : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_svm_check_intercept ( s , pc_start , SVM_EXIT_IDTR_WRITE ) ; gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , MO_16 , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 2 ) ; gen_op_ld_v ( s , CODE64 ( s ) + MO_32 , cpu_T0 , cpu_A0 ) ; if ( dflag == MO_16 ) { tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , 0xffffff ) ; } tcg_gen_st_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , idt . base ) ) ; tcg_gen_st32_tl ( cpu_T1 , cpu_env , offsetof ( CPUX86State , idt . limit ) ) ; break ; CASE_MODRM_OP ( 4 ) : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_READ_CR0 ) ; tcg_gen_ld_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , cr [ 0 ] ) ) ; if ( CODE64 ( s ) ) { mod = ( modrm >> 6 ) & 3 ; ot = ( mod != 3 ? MO_16 : s -> dflag ) ; } else { ot = MO_16 ; } gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; break ; case 0xee : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_regs [ R_ECX ] ) ; gen_helper_rdpkru ( cpu_tmp1_i64 , cpu_env , cpu_tmp2_i32 ) ; tcg_gen_extr_i64_tl ( cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] , cpu_tmp1_i64 ) ; break ; case 0xef : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_regs [ R_ECX ] ) ; gen_helper_wrpkru ( cpu_env , cpu_tmp2_i32 , cpu_tmp1_i64 ) ; break ; CASE_MODRM_OP ( 6 ) : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_svm_check_intercept ( s , pc_start , SVM_EXIT_WRITE_CR0 ) ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; gen_helper_lmsw ( cpu_env , cpu_T0 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; CASE_MODRM_MEM_OP ( 7 ) : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_lea_modrm ( env , s , modrm ) ; gen_helper_invlpg ( cpu_env , cpu_A0 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; case 0xf8 : # ifdef TARGET_X86_64 if ( CODE64 ( s ) ) { if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { tcg_gen_mov_tl ( cpu_T0 , cpu_seg_base [ R_GS ] ) ; tcg_gen_ld_tl ( cpu_seg_base [ R_GS ] , cpu_env , offsetof ( CPUX86State , kernelgsbase ) ) ; tcg_gen_st_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , kernelgsbase ) ) ; } break ; } # endif goto illegal_op ; case 0xf9 : if ( ! ( s -> cpuid_ext2_features & CPUID_EXT2_RDTSCP ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } gen_helper_rdtscp ( cpu_env ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; default : goto unknown_op ; } break ; case 0x108 : case 0x109 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_svm_check_intercept ( s , pc_start , ( b & 2 ) ? SVM_EXIT_INVD : SVM_EXIT_WBINVD ) ; } break ; case 0x63 : # ifdef TARGET_X86_64 if ( CODE64 ( s ) ) { int d_ot ; d_ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod == 3 ) { gen_op_mov_v_reg ( MO_32 , cpu_T0 , rm ) ; if ( d_ot == MO_64 ) { tcg_gen_ext32s_tl ( cpu_T0 , cpu_T0 ) ; } gen_op_mov_reg_v ( d_ot , reg , cpu_T0 ) ; } else { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , MO_32 | MO_SIGN , cpu_T0 , cpu_A0 ) ; gen_op_mov_reg_v ( d_ot , reg , cpu_T0 ) ; } } else # endif { TCGLabel * label1 ; TCGv t0 , t1 , t2 , a0 ; if ( ! s -> pe || s -> vm86 ) goto illegal_op ; t0 = tcg_temp_local_new ( ) ; t1 = tcg_temp_local_new ( ) ; t2 = tcg_temp_local_new ( ) ; ot = MO_16 ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( modrm >> 3 ) & 7 ; mod = ( modrm >> 6 ) & 3 ; rm = modrm & 7 ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , ot , t0 , cpu_A0 ) ; a0 = tcg_temp_local_new ( ) ; tcg_gen_mov_tl ( a0 , cpu_A0 ) ; } else { gen_op_mov_v_reg ( ot , t0 , rm ) ; TCGV_UNUSED ( a0 ) ; } gen_op_mov_v_reg ( ot , t1 , reg ) ; tcg_gen_andi_tl ( cpu_tmp0 , t0 , 3 ) ; tcg_gen_andi_tl ( t1 , t1 , 3 ) ; tcg_gen_movi_tl ( t2 , 0 ) ; label1 = gen_new_label ( ) ; tcg_gen_brcond_tl ( TCG_COND_GE , cpu_tmp0 , t1 , label1 ) ; tcg_gen_andi_tl ( t0 , t0 , ~ 3 ) ; tcg_gen_or_tl ( t0 , t0 , t1 ) ; tcg_gen_movi_tl ( t2 , CC_Z ) ; gen_set_label ( label1 ) ; if ( mod != 3 ) { gen_op_st_v ( s , ot , t0 , a0 ) ; tcg_temp_free ( a0 ) ; } else { gen_op_mov_reg_v ( ot , rm , t0 ) ; } gen_compute_eflags ( s ) ; tcg_gen_andi_tl ( cpu_cc_src , cpu_cc_src , ~ CC_Z ) ; tcg_gen_or_tl ( cpu_cc_src , cpu_cc_src , t2 ) ; tcg_temp_free ( t0 ) ; tcg_temp_free ( t1 ) ; tcg_temp_free ( t2 ) ; } break ; case 0x102 : case 0x103 : { TCGLabel * label1 ; TCGv t0 ; if ( ! s -> pe || s -> vm86 ) goto illegal_op ; ot = dflag != MO_16 ? MO_32 : MO_16 ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; t0 = tcg_temp_local_new ( ) ; gen_update_cc_op ( s ) ; if ( b == 0x102 ) { gen_helper_lar ( t0 , cpu_env , cpu_T0 ) ; } else { gen_helper_lsl ( t0 , cpu_env , cpu_T0 ) ; } tcg_gen_andi_tl ( cpu_tmp0 , cpu_cc_src , CC_Z ) ; label1 = gen_new_label ( ) ; tcg_gen_brcondi_tl ( TCG_COND_EQ , cpu_tmp0 , 0 , label1 ) ; gen_op_mov_reg_v ( ot , reg , t0 ) ; gen_set_label ( label1 ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; tcg_temp_free ( t0 ) ; } break ; case 0x118 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; op = ( modrm >> 3 ) & 7 ; switch ( op ) { case 0 : case 1 : case 2 : case 3 : if ( mod == 3 ) goto illegal_op ; gen_nop_modrm ( env , s , modrm ) ; break ; default : gen_nop_modrm ( env , s , modrm ) ; break ; } break ; case 0x11a : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; if ( s -> flags & HF_MPX_EN_MASK ) { mod = ( modrm >> 6 ) & 3 ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( prefixes & PREFIX_REPZ ) { if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 ) { goto illegal_op ; } gen_bndck ( env , s , modrm , TCG_COND_LTU , cpu_bndl [ reg ] ) ; } else if ( prefixes & PREFIX_REPNZ ) { if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 ) { goto illegal_op ; } TCGv_i64 notu = tcg_temp_new_i64 ( ) ; tcg_gen_not_i64 ( notu , cpu_bndu [ reg ] ) ; gen_bndck ( env , s , modrm , TCG_COND_GTU , notu ) ; tcg_temp_free_i64 ( notu ) ; } else if ( prefixes & PREFIX_DATA ) { if ( reg >= 4 || s -> aflag == MO_16 ) { goto illegal_op ; } if ( mod == 3 ) { int reg2 = ( modrm & 7 ) | REX_B ( s ) ; if ( reg2 >= 4 || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } if ( s -> flags & HF_MPX_IU_MASK ) { tcg_gen_mov_i64 ( cpu_bndl [ reg ] , cpu_bndl [ reg2 ] ) ; tcg_gen_mov_i64 ( cpu_bndu [ reg ] , cpu_bndu [ reg2 ] ) ; } } else { gen_lea_modrm ( env , s , modrm ) ; if ( CODE64 ( s ) ) { tcg_gen_qemu_ld_i64 ( cpu_bndl [ reg ] , cpu_A0 , s -> mem_index , MO_LEQ ) ; tcg_gen_addi_tl ( cpu_A0 , cpu_A0 , 8 ) ; tcg_gen_qemu_ld_i64 ( cpu_bndu [ reg ] , cpu_A0 , s -> mem_index , MO_LEQ ) ; } else { tcg_gen_qemu_ld_i64 ( cpu_bndl [ reg ] , cpu_A0 , s -> mem_index , MO_LEUL ) ; tcg_gen_addi_tl ( cpu_A0 , cpu_A0 , 4 ) ; tcg_gen_qemu_ld_i64 ( cpu_bndu [ reg ] , cpu_A0 , s -> mem_index , MO_LEUL ) ; } gen_set_hflag ( s , HF_MPX_IU_MASK ) ; } } else if ( mod != 3 ) { AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 || a . base < - 1 ) { goto illegal_op ; } if ( a . base >= 0 ) { tcg_gen_addi_tl ( cpu_A0 , cpu_regs [ a . base ] , a . disp ) ; } else { tcg_gen_movi_tl ( cpu_A0 , 0 ) ; } gen_lea_v_seg ( s , s -> aflag , cpu_A0 , a . def_seg , s -> override ) ; if ( a . index >= 0 ) { tcg_gen_mov_tl ( cpu_T0 , cpu_regs [ a . index ] ) ; } else { tcg_gen_movi_tl ( cpu_T0 , 0 ) ; } if ( CODE64 ( s ) ) { gen_helper_bndldx64 ( cpu_bndl [ reg ] , cpu_env , cpu_A0 , cpu_T0 ) ; tcg_gen_ld_i64 ( cpu_bndu [ reg ] , cpu_env , offsetof ( CPUX86State , mmx_t0 . MMX_Q ( 0 ) ) ) ; } else { gen_helper_bndldx32 ( cpu_bndu [ reg ] , cpu_env , cpu_A0 , cpu_T0 ) ; tcg_gen_ext32u_i64 ( cpu_bndl [ reg ] , cpu_bndu [ reg ] ) ; tcg_gen_shri_i64 ( cpu_bndu [ reg ] , cpu_bndu [ reg ] , 32 ) ; } gen_set_hflag ( s , HF_MPX_IU_MASK ) ; } } gen_nop_modrm ( env , s , modrm ) ; break ; case 0x11b : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; if ( s -> flags & HF_MPX_EN_MASK ) { mod = ( modrm >> 6 ) & 3 ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( mod != 3 && ( prefixes & PREFIX_REPZ ) ) { if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 ) { goto illegal_op ; } AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; if ( a . base >= 0 ) { tcg_gen_extu_tl_i64 ( cpu_bndl [ reg ] , cpu_regs [ a . base ] ) ; if ( ! CODE64 ( s ) ) { tcg_gen_ext32u_i64 ( cpu_bndl [ reg ] , cpu_bndl [ reg ] ) ; } } else if ( a . base == - 1 ) { tcg_gen_movi_i64 ( cpu_bndl [ reg ] , 0 ) ; } else { goto illegal_op ; } tcg_gen_not_tl ( cpu_A0 , gen_lea_modrm_1 ( a ) ) ; if ( ! CODE64 ( s ) ) { tcg_gen_ext32u_tl ( cpu_A0 , cpu_A0 ) ; } tcg_gen_extu_tl_i64 ( cpu_bndu [ reg ] , cpu_A0 ) ; gen_set_hflag ( s , HF_MPX_IU_MASK ) ; break ; } else if ( prefixes & PREFIX_REPNZ ) { if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 ) { goto illegal_op ; } gen_bndck ( env , s , modrm , TCG_COND_GTU , cpu_bndu [ reg ] ) ; } else if ( prefixes & PREFIX_DATA ) { if ( reg >= 4 || s -> aflag == MO_16 ) { goto illegal_op ; } if ( mod == 3 ) { int reg2 = ( modrm & 7 ) | REX_B ( s ) ; if ( reg2 >= 4 || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } if ( s -> flags & HF_MPX_IU_MASK ) { tcg_gen_mov_i64 ( cpu_bndl [ reg2 ] , cpu_bndl [ reg ] ) ; tcg_gen_mov_i64 ( cpu_bndu [ reg2 ] , cpu_bndu [ reg ] ) ; } } else { gen_lea_modrm ( env , s , modrm ) ; if ( CODE64 ( s ) ) { tcg_gen_qemu_st_i64 ( cpu_bndl [ reg ] , cpu_A0 , s -> mem_index , MO_LEQ ) ; tcg_gen_addi_tl ( cpu_A0 , cpu_A0 , 8 ) ; tcg_gen_qemu_st_i64 ( cpu_bndu [ reg ] , cpu_A0 , s -> mem_index , MO_LEQ ) ; } else { tcg_gen_qemu_st_i64 ( cpu_bndl [ reg ] , cpu_A0 , s -> mem_index , MO_LEUL ) ; tcg_gen_addi_tl ( cpu_A0 , cpu_A0 , 4 ) ; tcg_gen_qemu_st_i64 ( cpu_bndu [ reg ] , cpu_A0 , s -> mem_index , MO_LEUL ) ; } } } else if ( mod != 3 ) { AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 || a . base < - 1 ) { goto illegal_op ; } if ( a . base >= 0 ) { tcg_gen_addi_tl ( cpu_A0 , cpu_regs [ a . base ] , a . disp ) ; } else { tcg_gen_movi_tl ( cpu_A0 , 0 ) ; } gen_lea_v_seg ( s , s -> aflag , cpu_A0 , a . def_seg , s -> override ) ; if ( a . index >= 0 ) { tcg_gen_mov_tl ( cpu_T0 , cpu_regs [ a . index ] ) ; } else { tcg_gen_movi_tl ( cpu_T0 , 0 ) ; } if ( CODE64 ( s ) ) { gen_helper_bndstx64 ( cpu_env , cpu_A0 , cpu_T0 , cpu_bndl [ reg ] , cpu_bndu [ reg ] ) ; } else { gen_helper_bndstx32 ( cpu_env , cpu_A0 , cpu_T0 , cpu_bndl [ reg ] , cpu_bndu [ reg ] ) ; } } } gen_nop_modrm ( env , s , modrm ) ; break ; case 0x119 : case 0x11c ... 0x11f : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; gen_nop_modrm ( env , s , modrm ) ; break ; case 0x120 : case 0x122 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { modrm = cpu_ldub_code ( env , s -> pc ++ ) ; rm = ( modrm & 7 ) | REX_B ( s ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( CODE64 ( s ) ) ot = MO_64 ; else ot = MO_32 ; if ( ( prefixes & PREFIX_LOCK ) && ( reg == 0 ) && ( s -> cpuid_ext3_features & CPUID_EXT3_CR8LEG ) ) { reg = 8 ; } switch ( reg ) { case 0 : case 2 : case 3 : case 4 : case 8 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; if ( b & 2 ) { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; gen_helper_write_crN ( cpu_env , tcg_const_i32 ( reg ) , cpu_T0 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } else { gen_helper_read_crN ( cpu_T0 , cpu_env , tcg_const_i32 ( reg ) ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } break ; default : goto unknown_op ; } } break ; case 0x121 : case 0x123 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { modrm = cpu_ldub_code ( env , s -> pc ++ ) ; rm = ( modrm & 7 ) | REX_B ( s ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( CODE64 ( s ) ) ot = MO_64 ; else ot = MO_32 ; if ( reg >= 8 ) { goto illegal_op ; } if ( b & 2 ) { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_WRITE_DR0 + reg ) ; gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; tcg_gen_movi_i32 ( cpu_tmp2_i32 , reg ) ; gen_helper_set_dr ( cpu_env , cpu_tmp2_i32 , cpu_T0 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } else { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_READ_DR0 + reg ) ; tcg_gen_movi_i32 ( cpu_tmp2_i32 , reg ) ; gen_helper_get_dr ( cpu_T0 , cpu_env , cpu_tmp2_i32 ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } } break ; case 0x106 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_WRITE_CR0 ) ; gen_helper_clts ( cpu_env ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } break ; case 0x1c3 : if ( ! ( s -> cpuid_features & CPUID_SSE2 ) ) goto illegal_op ; ot = mo_64_32 ( dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , reg , 1 ) ; break ; case 0x1ae : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; switch ( modrm ) { CASE_MODRM_MEM_OP ( 0 ) : if ( ! ( s -> cpuid_features & CPUID_FXSR ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } if ( ( s -> flags & HF_EM_MASK ) || ( s -> flags & HF_TS_MASK ) ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } gen_lea_modrm ( env , s , modrm ) ; gen_helper_fxsave ( cpu_env , cpu_A0 ) ; break ; CASE_MODRM_MEM_OP ( 1 ) : if ( ! ( s -> cpuid_features & CPUID_FXSR ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } if ( ( s -> flags & HF_EM_MASK ) || ( s -> flags & HF_TS_MASK ) ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } gen_lea_modrm ( env , s , modrm ) ; gen_helper_fxrstor ( cpu_env , cpu_A0 ) ; break ; CASE_MODRM_MEM_OP ( 2 ) : if ( ( s -> flags & HF_EM_MASK ) || ! ( s -> flags & HF_OSFXSR_MASK ) ) { goto illegal_op ; } if ( s -> flags & HF_TS_MASK ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_ldmxcsr ( cpu_env , cpu_tmp2_i32 ) ; break ; CASE_MODRM_MEM_OP ( 3 ) : if ( ( s -> flags & HF_EM_MASK ) || ! ( s -> flags & HF_OSFXSR_MASK ) ) { goto illegal_op ; } if ( s -> flags & HF_TS_MASK ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , mxcsr ) ) ; gen_op_st_v ( s , MO_32 , cpu_T0 , cpu_A0 ) ; break ; CASE_MODRM_MEM_OP ( 4 ) : if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( prefixes & ( PREFIX_LOCK | PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; gen_helper_xsave ( cpu_env , cpu_A0 , cpu_tmp1_i64 ) ; break ; CASE_MODRM_MEM_OP ( 5 ) : if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( prefixes & ( PREFIX_LOCK | PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; gen_helper_xrstor ( cpu_env , cpu_A0 , cpu_tmp1_i64 ) ; gen_update_cc_op ( s ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; CASE_MODRM_MEM_OP ( 6 ) : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } if ( prefixes & PREFIX_DATA ) { if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLWB ) ) { goto illegal_op ; } gen_nop_modrm ( env , s , modrm ) ; } else { if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( s -> cpuid_xsave_features & CPUID_XSAVE_XSAVEOPT ) == 0 || ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; gen_helper_xsaveopt ( cpu_env , cpu_A0 , cpu_tmp1_i64 ) ; } break ; CASE_MODRM_MEM_OP ( 7 ) : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } if ( prefixes & PREFIX_DATA ) { if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLFLUSHOPT ) ) { goto illegal_op ; } } else { if ( ( s -> prefix & ( PREFIX_REPZ | PREFIX_REPNZ ) ) || ! ( s -> cpuid_features & CPUID_CLFLUSH ) ) { goto illegal_op ; } } gen_nop_modrm ( env , s , modrm ) ; break ; case 0xc0 ... 0xc7 : case 0xc8 ... 0xc8 : case 0xd0 ... 0xd7 : case 0xd8 ... 0xd8 : if ( CODE64 ( s ) && ( prefixes & PREFIX_REPZ ) && ! ( prefixes & PREFIX_LOCK ) && ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_FSGSBASE ) ) { TCGv base , treg , src , dst ; tcg_gen_movi_i32 ( cpu_tmp2_i32 , CR4_FSGSBASE_MASK ) ; gen_helper_cr4_testbit ( cpu_env , cpu_tmp2_i32 ) ; base = cpu_seg_base [ modrm & 8 ? R_GS : R_FS ] ; treg = cpu_regs [ ( modrm & 7 ) | REX_B ( s ) ] ; if ( modrm & 0x10 ) { dst = base , src = treg ; } else { dst = treg , src = base ; } if ( s -> dflag == MO_32 ) { tcg_gen_ext32u_tl ( dst , src ) ; } else { tcg_gen_mov_tl ( dst , src ) ; } break ; } goto unknown_op ; case 0xf8 : if ( prefixes & PREFIX_DATA ) { if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_PCOMMIT ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } break ; } case 0xf9 ... 0xff : if ( ! ( s -> cpuid_features & CPUID_SSE ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } tcg_gen_mb ( TCG_MO_ST_ST | TCG_BAR_SC ) ; break ; case 0xe8 ... 0xef : if ( ! ( s -> cpuid_features & CPUID_SSE ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } tcg_gen_mb ( TCG_MO_LD_LD | TCG_BAR_SC ) ; break ; case 0xf0 ... 0xf7 : if ( ! ( s -> cpuid_features & CPUID_SSE2 ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } tcg_gen_mb ( TCG_MO_ALL | TCG_BAR_SC ) ; break ; default : goto unknown_op ; } break ; case 0x10d : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; gen_nop_modrm ( env , s , modrm ) ; break ; case 0x1aa : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_RSM ) ; if ( ! ( s -> flags & HF_SMM_MASK ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_helper_rsm ( cpu_env ) ; gen_eob ( s ) ; break ; case 0x1b8 : if ( ( prefixes & ( PREFIX_REPZ | PREFIX_LOCK | PREFIX_REPNZ ) ) != PREFIX_REPZ ) goto illegal_op ; if ( ! ( s -> cpuid_ext_features & CPUID_EXT_POPCNT ) ) goto illegal_op ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( s -> prefix & PREFIX_DATA ) { ot = MO_16 ; } else { ot = mo_64_32 ( dflag ) ; } gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; gen_extu ( ot , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_src , cpu_T0 ) ; tcg_gen_ctpop_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; set_cc_op ( s , CC_OP_POPCNT ) ; break ; case 0x10e ... 0x10f : s -> prefix &= ~ ( PREFIX_REPZ | PREFIX_REPNZ | PREFIX_DATA ) ; case 0x110 ... 0x117 : case 0x128 ... 0x12f : case 0x138 ... 0x13a : case 0x150 ... 0x179 : case 0x17c ... 0x17f : case 0x1c2 : case 0x1c4 ... 0x1c6 : case 0x1d0 ... 0x1fe : gen_sse ( env , s , b , pc_start , rex_r ) ; break ; default : goto unknown_op ; } return s -> pc ; illegal_op : gen_illegal_opcode ( s ) ; return s -> pc ; unknown_op : gen_unknown_opcode ( env , s ) ; return s -> pc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; next_byte : if ( s -> pc - pc_start > 14 ) { goto illegal_op ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3698\n\n```\nCWE-284 static bool ndp_msg_check_valid ( struct ndp_msg * msg ) { size_t len = ndp_msg_payload_len ( msg ) ; enum ndp_msg_type msg_type = ndp_msg_type ( msg ) ; if ( len < ndp_msg_type_info ( msg_type ) -> raw_struct_size ) return false ; <S2SV_StartBug> return true ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return false ; if ( ndp_msg_type_info ( msg_type ) -> addrto_validate ) return ndp_msg_type_info ( msg_type ) -> addrto_validate ( & msg -> addrto ) ; else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty ast_for_for_stmt ( struct compiling * c , const node * n0 , bool is_async ) { const node * const n = is_async ? CHILD ( n0 , 1 ) : n0 ; asdl_seq * _target , * seq = NULL , * suite_seq ; expr_ty expression ; expr_ty target , first ; const node * node_target ; int end_lineno , end_col_offset ; <S2SV_StartBug> REQ ( n , for_stmt ) ; <S2SV_EndBug> <S2SV_StartBug> if ( NCH ( n ) == 9 ) { <S2SV_EndBug> <S2SV_StartBug> seq = ast_for_suite ( c , CHILD ( n , 8 ) ) ; <S2SV_EndBug> if ( ! seq ) return NULL ; } node_target = CHILD ( n , 1 ) ; _target = ast_for_exprlist ( c , node_target , Store ) ; if ( ! _target ) return NULL ; first = ( expr_ty ) asdl_seq_GET ( _target , 0 ) ; if ( NCH ( node_target ) == 1 ) target = first ; else target = Tuple ( _target , Store , first -> lineno , first -> col_offset , node_target -> n_end_lineno , node_target -> n_end_col_offset , c -> c_arena ) ; expression = ast_for_testlist ( c , CHILD ( n , 3 ) ) ; if ( ! expression ) return NULL ; <S2SV_StartBug> suite_seq = ast_for_suite ( c , CHILD ( n , 5 ) ) ; <S2SV_EndBug> if ( ! suite_seq ) return NULL ; if ( seq != NULL ) { get_last_end_pos ( seq , & end_lineno , & end_col_offset ) ; } else { get_last_end_pos ( suite_seq , & end_lineno , & end_col_offset ) ; } <S2SV_StartBug> if ( is_async ) <S2SV_EndBug> <S2SV_StartBug> return AsyncFor ( target , expression , suite_seq , seq , <S2SV_EndBug> LINENO ( n0 ) , n0 -> n_col_offset , end_lineno , end_col_offset , c -> c_arena ) ; else <S2SV_StartBug> return For ( target , expression , suite_seq , seq , <S2SV_EndBug> LINENO ( n ) , n -> n_col_offset , end_lineno , end_col_offset , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , end_col_offset ; int has_type_comment ; string type_comment ; <S2SV_ModStart> , for_stmt ) ; has_type_comment = TYPE ( CHILD ( n , 5 ) ) == TYPE_COMMENT <S2SV_ModStart> ) == 9 + has_type_comment <S2SV_ModStart> n , 8 + has_type_comment <S2SV_ModStart> n , 5 + has_type_comment <S2SV_ModStart> } if ( has_type_comment ) { type_comment = NEW_TYPE_COMMENT ( CHILD ( n , 5 ) ) ; if ( ! type_comment ) return NULL ; } else type_comment = NULL ; if ( <S2SV_ModStart> , seq , type_comment , <S2SV_ModStart> suite_seq , seq , type_comment\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14170\n\n```\nCWE-834 static int mxf_read_index_entry_array ( AVIOContext * pb , MXFIndexTableSegment * segment ) { int i , length ; segment -> nb_index_entries = avio_rb32 ( pb ) ; length = avio_rb32 ( pb ) ; <S2SV_StartBug> if ( ! ( segment -> temporal_offset_entries = av_calloc ( segment -> nb_index_entries , sizeof ( * segment -> temporal_offset_entries ) ) ) || <S2SV_EndBug> ! ( segment -> flag_entries = av_calloc ( segment -> nb_index_entries , sizeof ( * segment -> flag_entries ) ) ) || ! ( segment -> stream_offset_entries = av_calloc ( segment -> nb_index_entries , sizeof ( * segment -> stream_offset_entries ) ) ) ) { av_freep ( & segment -> temporal_offset_entries ) ; av_freep ( & segment -> flag_entries ) ; return AVERROR ( ENOMEM ) ; } <S2SV_StartBug> for ( i = 0 ; i < segment -> nb_index_entries ; i ++ ) { <S2SV_EndBug> segment -> temporal_offset_entries [ i ] = avio_r8 ( pb ) ; avio_r8 ( pb ) ; segment -> flag_entries [ i ] = avio_r8 ( pb ) ; segment -> stream_offset_entries [ i ] = avio_rb64 ( pb ) ; avio_skip ( pb , length - 11 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( segment -> nb_index_entries && length < 11 ) return AVERROR_INVALIDDATA ; if ( <S2SV_ModStart> ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int apply_cyclic_refresh_bitrate ( const VP9_COMMON * cm , const RATE_CONTROL * rc ) { <S2SV_StartBug> const float factor = 0.5 ; <S2SV_EndBug> const int number_blocks = cm -> mi_rows * cm -> mi_cols ; <S2SV_StartBug> if ( rc -> av_per_frame_bandwidth < factor * number_blocks || <S2SV_EndBug> number_blocks / 64 < 5 ) return 0 ; else return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> float factor = 0.25 <S2SV_ModEnd> ; const int <S2SV_ModStart> ( rc -> avg_frame_bandwidth <S2SV_ModEnd> < factor *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13307\n\n```\nCWE-787 static MagickPixelPacket * * AcquirePixelThreadSet ( const Image * images ) { const Image * next ; MagickPixelPacket * * pixels ; register ssize_t i , j ; size_t columns , <S2SV_StartBug> number_threads ; <S2SV_EndBug> <S2SV_StartBug> number_threads = ( size_t ) GetMagickResourceLimit ( ThreadResource ) ; <S2SV_EndBug> <S2SV_StartBug> pixels = ( MagickPixelPacket * * ) AcquireQuantumMemory ( number_threads , <S2SV_EndBug> sizeof ( * pixels ) ) ; if ( pixels == ( MagickPixelPacket * * ) NULL ) return ( ( MagickPixelPacket * * ) NULL ) ; <S2SV_StartBug> ( void ) memset ( pixels , 0 , number_threads * sizeof ( * pixels ) ) ; <S2SV_EndBug> columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) number_threads ; i ++ ) <S2SV_EndBug> { pixels [ i ] = ( MagickPixelPacket * ) AcquireQuantumMemory ( columns , sizeof ( * * pixels ) ) ; if ( pixels [ i ] == ( MagickPixelPacket * ) NULL ) return ( DestroyPixelThreadSet ( pixels ) ) ; for ( j = 0 ; j < ( ssize_t ) columns ; j ++ ) GetMagickPixelPacket ( images , & pixels [ i ] [ j ] ) ; } return ( pixels ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t columns , rows ; rows = MagickMax ( GetImageListLength ( images ) , <S2SV_ModEnd> ( size_t ) <S2SV_ModStart> ( ThreadResource ) ) <S2SV_ModStart> ) AcquireQuantumMemory ( rows , <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> NULL ) ; columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; for ( i = 0 <S2SV_ModEnd> ; i < <S2SV_ModStart> ( ssize_t ) rows <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1331\n\n```\nCWE-59 int main ( int argc , char * argv [ ] ) { int ret ; struct lxc_lock * lock ; lock = lxc_newlock ( NULL , NULL ) ; if ( ! lock ) { fprintf ( stderr , \"%d:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>unnamed<S2SV_blank>lock\\\\n\" , __LINE__ ) ; exit ( 1 ) ; } ret = lxclock ( lock , 0 ) ; if ( ret ) { fprintf ( stderr , \"%d:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>take<S2SV_blank>unnamed<S2SV_blank>lock<S2SV_blank>(%d)\\\\n\" , __LINE__ , ret ) ; exit ( 1 ) ; } ret = lxcunlock ( lock ) ; if ( ret ) { fprintf ( stderr , \"%d:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>put<S2SV_blank>unnamed<S2SV_blank>lock<S2SV_blank>(%d)\\\\n\" , __LINE__ , ret ) ; exit ( 1 ) ; } lxc_putlock ( lock ) ; lock = lxc_newlock ( \"/var/lib/lxc\" , mycontainername ) ; if ( ! lock ) { fprintf ( stderr , \"%d:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>lock\\\\n\" , __LINE__ ) ; exit ( 1 ) ; } struct stat sb ; <S2SV_StartBug> char * pathname = RUNTIME_PATH \"/lock/lxc/var/lib/lxc/\" ; <S2SV_EndBug> ret = stat ( pathname , & sb ) ; if ( ret != 0 ) { fprintf ( stderr , \"%d:<S2SV_blank>filename<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>created\\\\n\" , __LINE__ , pathname ) ; exit ( 1 ) ; } lxc_putlock ( lock ) ; test_two_locks ( ) ; fprintf ( stderr , \"all<S2SV_blank>tests<S2SV_blank>passed\\\\n\" ) ; exit ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pathname = RUNTIME_PATH \"/lxc/lock/var/lib/lxc/\" <S2SV_ModEnd> ; ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static inline int btif_hl_close_select_thread ( void ) { int result = 0 ; char sig_on = btif_hl_signal_select_exit ; BTIF_TRACE_DEBUG ( \"btif_hl_signal_select_exit\" ) ; <S2SV_StartBug> result = send ( signal_fds [ 1 ] , & sig_on , sizeof ( sig_on ) , 0 ) ; <S2SV_EndBug> if ( btif_is_enabled ( ) ) { if ( select_thread_id != - 1 ) { pthread_join ( select_thread_id , NULL ) ; select_thread_id = - 1 ; } } list_free ( soc_queue ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; result = TEMP_FAILURE_RETRY ( <S2SV_ModStart> ) , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-5208\n\n```\nCWE-120 int read_fru_area ( struct ipmi_intf * intf , struct fru_info * fru , uint8_t id , uint32_t offset , uint32_t length , uint8_t * frubuf ) { <S2SV_StartBug> uint32_t off = offset , tmp , finish ; <S2SV_EndBug> struct ipmi_rs * rsp ; struct ipmi_rq req ; uint8_t msg_data [ 4 ] ; if ( offset > fru -> size ) { lprintf ( LOG_ERR , \"Read<S2SV_blank>FRU<S2SV_blank>Area<S2SV_blank>offset<S2SV_blank>incorrect:<S2SV_blank>%d<S2SV_blank>><S2SV_blank>%d\" , offset , fru -> size ) ; return - 1 ; } finish = offset + length ; if ( finish > fru -> size ) { <S2SV_StartBug> finish = fru -> size ; <S2SV_EndBug> lprintf ( LOG_NOTICE , \"Read<S2SV_blank>FRU<S2SV_blank>Area<S2SV_blank>length<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large,<S2SV_blank>\" \"Adjusting<S2SV_blank>to<S2SV_blank>%d\" , offset + length , finish - offset ) ; <S2SV_StartBug> } <S2SV_EndBug> memset ( & req , 0 , sizeof ( req ) ) ; req . msg . netfn = IPMI_NETFN_STORAGE ; req . msg . cmd = GET_FRU_DATA ; req . msg . data = msg_data ; req . msg . data_len = 4 ; if ( fru -> max_read_size == 0 ) { uint16_t max_rs_size = ipmi_intf_get_max_response_data_size ( intf ) - 1 ; if ( max_rs_size <= 1 ) { lprintf ( LOG_ERROR , \"Maximum<S2SV_blank>response<S2SV_blank>size<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>to<S2SV_blank>send<S2SV_blank>\" \"a<S2SV_blank>read<S2SV_blank>request\" ) ; return - 1 ; } if ( max_rs_size - 1 > 255 ) { fru -> max_read_size = 255 ; } else { fru -> max_read_size = max_rs_size - 1 ; } if ( fru -> access ) { fru -> max_read_size &= ~ 1 ; } } <S2SV_StartBug> do { <S2SV_EndBug> tmp = fru -> access ? off >> 1 : off ; msg_data [ 0 ] = id ; msg_data [ 1 ] = ( uint8_t ) ( tmp & 0xff ) ; msg_data [ 2 ] = ( uint8_t ) ( tmp >> 8 ) ; tmp = finish - off ; if ( tmp > fru -> max_read_size ) msg_data [ 3 ] = ( uint8_t ) fru -> max_read_size ; else msg_data [ 3 ] = ( uint8_t ) tmp ; rsp = intf -> sendrecv ( intf , & req ) ; if ( ! rsp ) { lprintf ( LOG_NOTICE , \"FRU<S2SV_blank>Read<S2SV_blank>failed\" ) ; break ; } if ( rsp -> ccode ) { if ( fru_cc_rq2big ( rsp -> ccode ) && fru -> max_read_size > FRU_BLOCK_SZ ) { if ( fru -> max_read_size > FRU_AREA_MAXIMUM_BLOCK_SZ ) { fru -> max_read_size -= FRU_BLOCK_SZ ; } else { fru -> max_read_size -- ; } lprintf ( LOG_INFO , \"Retrying<S2SV_blank>FRU<S2SV_blank>read<S2SV_blank>with<S2SV_blank>request<S2SV_blank>size<S2SV_blank>%d\" , fru -> max_read_size ) ; continue ; } lprintf ( LOG_NOTICE , \"FRU<S2SV_blank>Read<S2SV_blank>failed:<S2SV_blank>%s\" , val2str ( rsp -> ccode , completion_code_vals ) ) ; break ; } tmp = fru -> access ? rsp -> data [ 0 ] << 1 : rsp -> data [ 0 ] ; <S2SV_StartBug> memcpy ( frubuf , rsp -> data + 1 , tmp ) ; <S2SV_EndBug> off += tmp ; frubuf += tmp ; <S2SV_StartBug> if ( tmp == 0 && off < finish ) { <S2SV_EndBug> return 0 ; } } while ( off < finish ) ; if ( off < finish ) { return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> off = offset ; uint32_t tmp ; uint32_t finish ; uint32_t size_left_in_buffer <S2SV_ModEnd> ; struct ipmi_rs <S2SV_ModStart> size ) { memset ( frubuf + fru -> size , 0 , length - fru -> size ) ; <S2SV_ModStart> offset ) ; length = finish - offset ; <S2SV_ModStart> ; } } size_left_in_buffer = length ; <S2SV_ModStart> 0 ] ; if ( rsp -> data_len < 1 || tmp > rsp -> data_len - 1 || tmp > size_left_in_buffer ) { printf ( \"<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>buffer<S2SV_blank>size\" ) ; return - 1 ; } <S2SV_ModStart> += tmp ; size_left_in_buffer -= tmp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20786\n\n```\nCWE-476 static ScreenCell * realloc_buffer ( VTermScreen * screen , ScreenCell * buffer , int new_rows , int new_cols ) { ScreenCell * new_buffer = vterm_allocator_malloc ( screen -> vt , sizeof ( ScreenCell ) * new_rows * new_cols ) ; int row , col ; for ( row = 0 ; row < new_rows ; row ++ ) { for ( col = 0 ; col < new_cols ; col ++ ) { ScreenCell * new_cell = new_buffer + row * new_cols + col ; if ( buffer && row < screen -> rows && col < screen -> cols ) * new_cell = buffer [ row * screen -> cols + col ] ; else { new_cell -> chars [ 0 ] = 0 ; new_cell -> pen = screen -> pen ; } } } <S2SV_StartBug> if ( buffer ) <S2SV_EndBug> vterm_allocator_free ( screen -> vt , buffer ) ; return new_buffer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } } } <S2SV_ModEnd> vterm_allocator_free ( screen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4270\n\n```\nCWE-20 static int net_ctl_permissions ( struct ctl_table_header * head , struct ctl_table * table ) { struct net * net = container_of ( head -> set , struct net , sysctls ) ; kuid_t root_uid = make_kuid ( net -> user_ns , 0 ) ; kgid_t root_gid = make_kgid ( net -> user_ns , 0 ) ; if ( ns_capable ( net -> user_ns , CAP_NET_ADMIN ) || <S2SV_StartBug> uid_eq ( root_uid , current_uid ( ) ) ) { <S2SV_EndBug> int mode = ( table -> mode >> 6 ) & 7 ; return ( mode << 6 ) | ( mode << 3 ) | mode ; } <S2SV_StartBug> if ( gid_eq ( root_gid , current_gid ( ) ) ) { <S2SV_EndBug> int mode = ( table -> mode >> 3 ) & 7 ; return ( mode << 3 ) | mode ; } return table -> mode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( root_uid , current_euid <S2SV_ModEnd> ( ) ) <S2SV_ModStart> } if ( in_egroup_p ( root_gid <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15522\n\n```\nCWE-000 void csync_daemon_session ( ) { static char line [ 4 * 4096 ] ; struct stat sb ; address_t peername = { . sa . sa_family = AF_UNSPEC , } ; socklen_t peerlen = sizeof ( peername ) ; char * peer = 0 , * tag [ 32 ] ; int i ; if ( fstat ( 0 , & sb ) ) csync_fatal ( \"Can\\'t<S2SV_blank>run<S2SV_blank>fstat<S2SV_blank>on<S2SV_blank>fd<S2SV_blank>0:<S2SV_blank>%s\" , strerror ( errno ) ) ; switch ( sb . st_mode & S_IFMT ) { case S_IFSOCK : if ( getpeername ( 0 , & peername . sa , & peerlen ) == - 1 ) csync_fatal ( \"Can\\'t<S2SV_blank>run<S2SV_blank>getpeername<S2SV_blank>on<S2SV_blank>fd<S2SV_blank>0:<S2SV_blank>%s\" , strerror ( errno ) ) ; break ; case S_IFIFO : set_peername_from_env ( & peername , \"SSH_CLIENT\" ) ; break ; default : csync_fatal ( \"I\\'m<S2SV_blank>only<S2SV_blank>talking<S2SV_blank>to<S2SV_blank>sockets<S2SV_blank>or<S2SV_blank>pipes!<S2SV_blank>%x\\\\n\" , sb . st_mode & S_IFMT ) ; break ; } while ( conn_gets ( line , sizeof ( line ) ) ) { int cmdnr ; if ( ! setup_tag ( tag , line ) ) continue ; for ( cmdnr = 0 ; cmdtab [ cmdnr ] . text ; cmdnr ++ ) if ( ! strcasecmp ( cmdtab [ cmdnr ] . text , tag [ 0 ] ) ) break ; if ( ! cmdtab [ cmdnr ] . text ) { cmd_error = conn_response ( CR_ERR_UNKNOWN_COMMAND ) ; goto abort_cmd ; } cmd_error = 0 ; if ( cmdtab [ cmdnr ] . need_ident && ! peer ) { conn_printf ( \"Dear<S2SV_blank>%s,<S2SV_blank>please<S2SV_blank>identify<S2SV_blank>first.\\\\n\" , csync_inet_ntop ( & peername ) ? : \"stranger\" ) ; goto next_cmd ; } if ( cmdtab [ cmdnr ] . check_perm ) on_cygwin_lowercase ( tag [ 2 ] ) ; if ( cmdtab [ cmdnr ] . check_perm ) { if ( cmdtab [ cmdnr ] . check_perm == 2 ) csync_compare_mode = 1 ; int perm = csync_perm ( tag [ 2 ] , tag [ 1 ] , peer ) ; if ( cmdtab [ cmdnr ] . check_perm == 2 ) csync_compare_mode = 0 ; if ( perm ) { if ( perm == 2 ) { csync_mark ( tag [ 2 ] , peer , 0 ) ; cmd_error = conn_response ( CR_ERR_PERM_DENIED_FOR_SLAVE ) ; } else cmd_error = conn_response ( CR_ERR_PERM_DENIED ) ; goto abort_cmd ; } } if ( cmdtab [ cmdnr ] . check_dirty && csync_check_dirty ( tag [ 2 ] , peer , cmdtab [ cmdnr ] . action == A_FLUSH ) ) goto abort_cmd ; if ( cmdtab [ cmdnr ] . unlink ) csync_unlink ( tag [ 2 ] , cmdtab [ cmdnr ] . unlink ) ; switch ( cmdtab [ cmdnr ] . action ) { case A_SIG : { struct stat st ; if ( lstat_strict ( prefixsubst ( tag [ 2 ] ) , & st ) != 0 ) { if ( errno == ENOENT ) { struct stat sb ; char parent_dirname [ strlen ( tag [ 2 ] ) ] ; split_dirname_basename ( parent_dirname , NULL , tag [ 2 ] ) ; if ( lstat_strict ( prefixsubst ( parent_dirname ) , & sb ) != 0 ) cmd_error = conn_response ( CR_ERR_PARENT_DIR_MISSING ) ; else conn_resp_zero ( CR_OK_PATH_NOT_FOUND ) ; } else cmd_error = strerror ( errno ) ; break ; } else if ( csync_check_pure ( tag [ 2 ] ) ) { conn_resp_zero ( CR_OK_NOT_FOUND ) ; break ; } conn_resp ( CR_OK_DATA_FOLLOWS ) ; conn_printf ( \"%s\\\\n\" , csync_genchecktxt ( & st , tag [ 2 ] , 1 ) ) ; if ( S_ISREG ( st . st_mode ) ) csync_rs_sig ( tag [ 2 ] ) ; else conn_printf ( \"octet-stream<S2SV_blank>0\\\\n\" ) ; } break ; case A_MARK : csync_mark ( tag [ 2 ] , peer , 0 ) ; break ; case A_TYPE : { FILE * f = fopen ( prefixsubst ( tag [ 2 ] ) , \"rb\" ) ; if ( ! f && errno == ENOENT ) f = fopen ( \"/dev/null\" , \"rb\" ) ; if ( f ) { char buffer [ 512 ] ; size_t rc ; conn_resp ( CR_OK_DATA_FOLLOWS ) ; while ( ( rc = fread ( buffer , 1 , 512 , f ) ) > 0 ) if ( conn_write ( buffer , rc ) != rc ) { conn_printf ( \"[[<S2SV_blank>%s<S2SV_blank>]]\" , strerror ( errno ) ) ; break ; } fclose ( f ) ; return ; } cmd_error = strerror ( errno ) ; } break ; case A_GETTM : case A_GETSZ : { struct stat sbuf ; conn_resp ( CR_OK_DATA_FOLLOWS ) ; if ( ! lstat_strict ( prefixsubst ( tag [ 2 ] ) , & sbuf ) ) conn_printf ( \"%ld\\\\n\" , cmdtab [ cmdnr ] . action == A_GETTM ? ( long ) sbuf . st_mtime : ( long ) sbuf . st_size ) ; else conn_printf ( \"-1\\\\n\" ) ; goto next_cmd ; } break ; case A_FLUSH : SQL ( \"Flushing<S2SV_blank>dirty<S2SV_blank>entry<S2SV_blank>(if<S2SV_blank>any)<S2SV_blank>for<S2SV_blank>file\" , \"DELETE<S2SV_blank>FROM<S2SV_blank>dirty<S2SV_blank>WHERE<S2SV_blank>filename<S2SV_blank>=<S2SV_blank>\\'%s\\'\" , url_encode ( tag [ 2 ] ) ) ; break ; case A_DEL : if ( ! csync_file_backup ( tag [ 2 ] ) ) csync_unlink ( tag [ 2 ] , 0 ) ; break ; case A_PATCH : if ( ! csync_file_backup ( tag [ 2 ] ) ) { conn_resp ( CR_OK_SEND_DATA ) ; csync_rs_sig ( tag [ 2 ] ) ; if ( csync_rs_patch ( tag [ 2 ] ) ) cmd_error = strerror ( errno ) ; } break ; case A_MKDIR : # ifdef __CYGWIN__ { char winfilename [ MAX_PATH ] ; cygwin_conv_to_win32_path ( prefixsubst ( tag [ 2 ] ) , winfilename ) ; if ( ! CreateDirectory ( TEXT ( winfilename ) , NULL ) ) { struct stat st ; if ( lstat_strict ( prefixsubst ( tag [ 2 ] ) , & st ) != 0 || ! S_ISDIR ( st . st_mode ) ) { csync_debug ( 1 , \"Win32<S2SV_blank>I/O<S2SV_blank>Error<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>mkdir<S2SV_blank>command:<S2SV_blank>%s\\\\n\" , ( int ) GetLastError ( ) , winfilename ) ; cmd_error = conn_response ( CR_ERR_WIN32_EIO_CREATE_DIR ) ; } } } # else if ( mkdir ( prefixsubst ( tag [ 2 ] ) , 0700 ) ) { struct stat st ; if ( lstat_strict ( ( prefixsubst ( tag [ 2 ] ) ) , & st ) != 0 || ! S_ISDIR ( st . st_mode ) ) cmd_error = strerror ( errno ) ; } # endif break ; case A_MKCHR : if ( mknod ( prefixsubst ( tag [ 2 ] ) , 0700 | S_IFCHR , atoi ( tag [ 3 ] ) ) ) cmd_error = strerror ( errno ) ; break ; case A_MKBLK : if ( mknod ( prefixsubst ( tag [ 2 ] ) , 0700 | S_IFBLK , atoi ( tag [ 3 ] ) ) ) cmd_error = strerror ( errno ) ; break ; case A_MKFIFO : if ( mknod ( prefixsubst ( tag [ 2 ] ) , 0700 | S_IFIFO , 0 ) ) cmd_error = strerror ( errno ) ; break ; case A_MKLINK : if ( symlink ( tag [ 3 ] , prefixsubst ( tag [ 2 ] ) ) ) cmd_error = strerror ( errno ) ; break ; case A_MKSOCK : break ; case A_SETOWN : if ( ! csync_ignore_uid || ! csync_ignore_gid ) { int uid = csync_ignore_uid ? - 1 : atoi ( tag [ 3 ] ) ; int gid = csync_ignore_gid ? - 1 : atoi ( tag [ 4 ] ) ; if ( lchown ( prefixsubst ( tag [ 2 ] ) , uid , gid ) ) cmd_error = strerror ( errno ) ; } break ; case A_SETMOD : if ( ! csync_ignore_mod ) { if ( chmod ( prefixsubst ( tag [ 2 ] ) , atoi ( tag [ 3 ] ) ) ) cmd_error = strerror ( errno ) ; } break ; case A_SETIME : { struct utimbuf utb ; utb . actime = atoll ( tag [ 3 ] ) ; utb . modtime = atoll ( tag [ 3 ] ) ; if ( utime ( prefixsubst ( tag [ 2 ] ) , & utb ) ) cmd_error = strerror ( errno ) ; } break ; case A_LIST : SQL_BEGIN ( \"DB<S2SV_blank>Dump<S2SV_blank>-<S2SV_blank>Files<S2SV_blank>for<S2SV_blank>sync<S2SV_blank>pair\" , \"SELECT<S2SV_blank>checktxt,<S2SV_blank>filename<S2SV_blank>FROM<S2SV_blank>file<S2SV_blank>%s%s%s<S2SV_blank>ORDER<S2SV_blank>BY<S2SV_blank>filename\" , strcmp ( tag [ 2 ] , \"-\" ) ? \"WHERE<S2SV_blank>filename<S2SV_blank>=<S2SV_blank>\\'\" : \"\" , strcmp ( tag [ 2 ] , \"-\" ) ? url_encode ( tag [ 2 ] ) : \"\" , strcmp ( tag [ 2 ] , \"-\" ) ? \"\\'\" : \"\" ) { if ( csync_match_file_host ( url_decode ( SQL_V ( 1 ) ) , tag [ 1 ] , peer , ( const char * * ) & tag [ 3 ] ) ) conn_printf ( \"%s\\\\t%s\\\\n\" , SQL_V ( 0 ) , SQL_V ( 1 ) ) ; } SQL_END ; break ; case A_DEBUG : csync_debug_out = stdout ; if ( tag [ 1 ] [ 0 ] ) csync_debug_level = atoi ( tag [ 1 ] ) ; break ; case A_HELLO : if ( peer ) { free ( peer ) ; peer = NULL ; } if ( verify_peername ( tag [ 1 ] , & peername ) ) { peer = strdup ( tag [ 1 ] ) ; } else { peer = NULL ; cmd_error = conn_response ( CR_ERR_IDENTIFICATION_FAILED ) ; break ; } # ifdef HAVE_LIBGNUTLS if ( ! csync_conn_usessl ) { struct csync_nossl * t ; for ( t = csync_nossl ; t ; t = t -> next ) { if ( ! fnmatch ( t -> pattern_from , myhostname , 0 ) && ! fnmatch ( t -> pattern_to , peer , 0 ) ) goto conn_without_ssl_ok ; } cmd_error = conn_response ( CR_ERR_SSL_EXPECTED ) ; <S2SV_StartBug> } <S2SV_EndBug> conn_without_ssl_ok : ; # endif break ; case A_GROUP : if ( active_grouplist ) { cmd_error = conn_response ( CR_ERR_GROUP_LIST_ALREADY_SET ) ; } else { const struct csync_group * g ; int i , gnamelen ; active_grouplist = strdup ( tag [ 1 ] ) ; for ( g = csync_group ; g ; g = g -> next ) { if ( ! g -> myname ) continue ; i = 0 ; gnamelen = strlen ( csync_group -> gname ) ; while ( active_grouplist [ i ] ) { if ( ! strncmp ( active_grouplist + i , csync_group -> gname , gnamelen ) && ( active_grouplist [ i + gnamelen ] == ',' || ! active_grouplist [ i + gnamelen ] ) ) goto found_asactive ; while ( active_grouplist [ i ] ) if ( active_grouplist [ i ++ ] == ',' ) break ; } csync_group -> myname = 0 ; found_asactive : ; } } break ; case A_BYE : for ( i = 0 ; i < 32 ; i ++ ) free ( tag [ i ] ) ; conn_resp ( CR_OK_CU_LATER ) ; return ; } if ( cmdtab [ cmdnr ] . update ) csync_file_update ( tag [ 2 ] , peer ) ; if ( cmdtab [ cmdnr ] . update == 1 ) { csync_debug ( 1 , \"Updated<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s.\\\\n\" , tag [ 2 ] , peer ? peer : \"???\" ) ; csync_schedule_commands ( tag [ 2 ] , 0 ) ; } abort_cmd : if ( cmd_error ) conn_printf ( \"%s\\\\n\" , cmd_error ) ; else conn_resp ( CR_OK_CMD_FINISHED ) ; next_cmd : destroy_tag ( tag ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CR_ERR_SSL_EXPECTED ) ; peer = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7035\n\n```\nCWE-285 crm_client_t * crm_client_new ( qb_ipcs_connection_t * c , uid_t uid_client , gid_t gid_client ) { <S2SV_StartBug> static uid_t uid_server = 0 ; <S2SV_EndBug> static gid_t gid_cluster = 0 ; crm_client_t * client = NULL ; CRM_LOG_ASSERT ( c ) ; if ( c == NULL ) { return NULL ; } if ( gid_cluster == 0 ) { <S2SV_StartBug> uid_server = getuid ( ) ; <S2SV_EndBug> if ( crm_user_lookup ( CRM_DAEMON_USER , NULL , & gid_cluster ) < 0 ) { static bool have_error = FALSE ; if ( have_error == FALSE ) { crm_warn ( \"Could<S2SV_blank>not<S2SV_blank>find<S2SV_blank>group<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\" , CRM_DAEMON_USER ) ; have_error = TRUE ; } } } <S2SV_StartBug> if ( gid_cluster != 0 && gid_client != 0 ) { <S2SV_EndBug> uid_t best_uid = - 1 ; if ( uid_client == 0 || uid_server == 0 ) { best_uid = QB_MAX ( uid_client , uid_server ) ; crm_trace ( \"Allowing<S2SV_blank>user<S2SV_blank>%u<S2SV_blank>to<S2SV_blank>clean<S2SV_blank>up<S2SV_blank>after<S2SV_blank>disconnect\" , best_uid ) ; } crm_trace ( \"Giving<S2SV_blank>access<S2SV_blank>to<S2SV_blank>group<S2SV_blank>%u\" , gid_cluster ) ; qb_ipcs_connection_auth_set ( c , best_uid , gid_cluster , S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP ) ; } crm_client_init ( ) ; client = calloc ( 1 , sizeof ( crm_client_t ) ) ; client -> ipcs = c ; client -> kind = CRM_CLIENT_IPC ; client -> pid = crm_ipcs_client_pid ( c ) ; client -> id = crm_generate_uuid ( ) ; crm_debug ( \"Connecting<S2SV_blank>%p<S2SV_blank>for<S2SV_blank>uid=%d<S2SV_blank>gid=%d<S2SV_blank>pid=%u<S2SV_blank>id=%s\" , c , uid_client , gid_client , client -> pid , client -> id ) ; # if ENABLE_ACL client -> user = uid2username ( uid_client ) ; # endif g_hash_table_insert ( client_connections , c , client ) ; return client ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { static <S2SV_ModEnd> gid_t gid_cluster = <S2SV_ModStart> 0 ) { <S2SV_ModEnd> if ( crm_user_lookup <S2SV_ModStart> } if ( uid_client != 0 ) { crm_trace ( \"Giving<S2SV_blank>access<S2SV_blank>to<S2SV_blank>group<S2SV_blank>%u\" , gid_cluster ) ; qb_ipcs_connection_auth_set ( c , - 1 <S2SV_ModEnd> , gid_cluster ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2543\n\n```\nCWE-000 static int snd_seq_ioctl_remove_events ( struct snd_seq_client * client , void __user * arg ) { struct snd_seq_remove_events info ; if ( copy_from_user ( & info , arg , sizeof ( info ) ) ) return - EFAULT ; if ( info . remove_mode & SNDRV_SEQ_REMOVE_INPUT ) { <S2SV_StartBug> if ( client -> type == USER_CLIENT ) <S2SV_EndBug> snd_seq_fifo_clear ( client -> data . user . fifo ) ; } if ( info . remove_mode & SNDRV_SEQ_REMOVE_OUTPUT ) snd_seq_queue_remove_cells ( client -> number , & info ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> type == USER_CLIENT && client -> data . user . fifo\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13143\n\n```\nCWE-200 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; register Quantum * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } clone_info = CloneImageInfo ( image_info ) ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image2 = ReadMATImageV4 ( image_info , image , exception ) ; if ( image2 == NULL ) goto MATLAB_KO ; image = image2 ; goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) MATLAB_KO : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = DecompressBlock ( image , MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) continue ; MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; ( void ) ReadBlobXXXLong ( image2 ) ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; default : ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { image -> type = GrayscaleType ; SetImageColorspace ( image , GRAYColorspace , exception ) ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> MinVal = 0 ; <S2SV_EndBug> MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( image , q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; ExitLoop : if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( image , ( double * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( image , ( float * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image , exception ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( ( image2 != NULL ) && ( image2 != image ) ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } } RelinquishMagickMemory ( BImgBuff ) ; END_OF_READING : clone_info = DestroyImageInfo ( clone_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 mod_ty PyAST_FromNodeObject ( const node * n , PyCompilerFlags * flags , PyObject * filename , PyArena * arena ) { int i , j , k , num ; asdl_seq * stmts = NULL ; <S2SV_StartBug> stmt_ty s ; <S2SV_EndBug> node * ch ; struct compiling c ; <S2SV_StartBug> mod_ty res = NULL ; <S2SV_EndBug> c . c_arena = arena ; c . c_filename = filename ; c . c_normalize = NULL ; if ( TYPE ( n ) == encoding_decl ) n = CHILD ( n , 0 ) ; k = 0 ; switch ( TYPE ( n ) ) { case file_input : stmts = _Py_asdl_seq_new ( num_stmts ( n ) , arena ) ; if ( ! stmts ) goto out ; for ( i = 0 ; i < NCH ( n ) - 1 ; i ++ ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == NEWLINE ) continue ; REQ ( ch , stmt ) ; num = num_stmts ( ch ) ; if ( num == 1 ) { s = ast_for_stmt ( & c , ch ) ; if ( ! s ) goto out ; asdl_seq_SET ( stmts , k ++ , s ) ; } else { ch = CHILD ( ch , 0 ) ; REQ ( ch , simple_stmt ) ; for ( j = 0 ; j < num ; j ++ ) { s = ast_for_stmt ( & c , CHILD ( ch , j * 2 ) ) ; if ( ! s ) goto out ; asdl_seq_SET ( stmts , k ++ , s ) ; } } } <S2SV_StartBug> res = Module ( stmts , arena ) ; <S2SV_EndBug> break ; case eval_input : { expr_ty testlist_ast ; testlist_ast = ast_for_testlist ( & c , CHILD ( n , 0 ) ) ; if ( ! testlist_ast ) goto out ; res = Expression ( testlist_ast , arena ) ; break ; } case single_input : if ( TYPE ( CHILD ( n , 0 ) ) == NEWLINE ) { stmts = _Py_asdl_seq_new ( 1 , arena ) ; if ( ! stmts ) goto out ; asdl_seq_SET ( stmts , 0 , Pass ( n -> n_lineno , n -> n_col_offset , n -> n_end_lineno , n -> n_end_col_offset , arena ) ) ; if ( ! asdl_seq_GET ( stmts , 0 ) ) goto out ; res = Interactive ( stmts , arena ) ; } else { n = CHILD ( n , 0 ) ; num = num_stmts ( n ) ; stmts = _Py_asdl_seq_new ( num , arena ) ; if ( ! stmts ) goto out ; if ( num == 1 ) { s = ast_for_stmt ( & c , n ) ; if ( ! s ) goto out ; asdl_seq_SET ( stmts , 0 , s ) ; } else { REQ ( n , simple_stmt ) ; for ( i = 0 ; i < NCH ( n ) ; i += 2 ) { if ( TYPE ( CHILD ( n , i ) ) == NEWLINE ) break ; s = ast_for_stmt ( & c , CHILD ( n , i ) ) ; if ( ! s ) goto out ; asdl_seq_SET ( stmts , i / 2 , s ) ; } } res = Interactive ( stmts , arena ) ; } break ; <S2SV_StartBug> default : <S2SV_EndBug> PyErr_Format ( PyExc_SystemError , \"invalid<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>PyAST_FromNode\" , TYPE ( n ) ) ; goto out ; } out : if ( c . c_normalize ) { Py_DECREF ( c . c_normalize ) ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; asdl_seq * type_ignores = NULL ; <S2SV_ModStart> res = NULL ; asdl_seq * argtypes = NULL ; expr_ty ret , arg <S2SV_ModStart> } } } ch = CHILD ( n , NCH ( n ) - 1 ) ; REQ ( ch , ENDMARKER ) ; num = NCH ( ch ) ; type_ignores = _Py_asdl_seq_new ( num , arena ) ; if ( ! type_ignores ) goto out ; for ( i = 0 ; i < num ; i ++ ) { type_ignore_ty ti = TypeIgnore ( LINENO ( CHILD ( ch , i ) ) , arena ) ; if ( ! ti ) goto out ; asdl_seq_SET ( type_ignores , i , ti ) ; } <S2SV_ModStart> Module ( stmts , type_ignores <S2SV_ModStart> } break ; case func_type_input : n = CHILD ( n , 0 ) ; REQ ( n , func_type ) ; if ( TYPE ( CHILD ( n , 1 ) ) == typelist ) { ch = CHILD ( n , 1 ) ; num = 0 ; for ( i = 0 ; i < NCH ( ch ) ; i ++ ) { if ( TYPE ( CHILD ( ch , i ) ) == test ) { num ++ ; } } argtypes = _Py_asdl_seq_new ( num , arena ) ; if ( ! argtypes ) goto out ; j = 0 ; for ( i = 0 ; i < NCH ( ch ) ; i ++ ) { if ( TYPE ( CHILD ( ch , i ) ) == test ) { arg = ast_for_expr ( & c , CHILD ( ch , i ) ) ; if ( ! arg ) goto out ; asdl_seq_SET ( argtypes , j ++ , arg ) ; } } } else { argtypes = _Py_asdl_seq_new ( 0 , arena ) ; if ( ! argtypes ) goto out ; } ret = ast_for_expr ( & c , CHILD ( n , NCH ( n ) - 1 ) ) ; if ( ! ret ) goto out ; res = FunctionType ( argtypes , ret , arena ) ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t dm9000Init ( NetInterface * interface ) { uint_t i ; uint16_t vendorId ; uint16_t productId ; <S2SV_StartBug> uint8_t chipRevision ; <S2SV_EndBug> Dm9000Context * context ; TRACE_INFO ( \"Initializing<S2SV_blank>DM9000<S2SV_blank>Ethernet<S2SV_blank>controller...\\\\r\\\\n\" ) ; interface -> extIntDriver -> init ( ) ; context = ( Dm9000Context * ) interface -> nicContext ; context -> queuedPackets = 0 ; context -> txBuffer = memPoolAlloc ( ETH_MAX_FRAME_SIZE ) ; context -> rxBuffer = memPoolAlloc ( ETH_MAX_FRAME_SIZE ) ; if ( context -> txBuffer == NULL || context -> rxBuffer == NULL ) { memPoolFree ( context -> txBuffer ) ; memPoolFree ( context -> rxBuffer ) ; return ERROR_OUT_OF_MEMORY ; } <S2SV_StartBug> vendorId = ( dm9000ReadReg ( DM9000_REG_VIDH ) << 8 ) | dm9000ReadReg ( DM9000_REG_VIDL ) ; <S2SV_EndBug> <S2SV_StartBug> productId = ( dm9000ReadReg ( DM9000_REG_PIDH ) << 8 ) | dm9000ReadReg ( DM9000_REG_PIDL ) ; <S2SV_EndBug> <S2SV_StartBug> chipRevision = dm9000ReadReg ( DM9000_REG_CHIPR ) ; <S2SV_EndBug> if ( vendorId != DM9000_VID || productId != DM9000_PID ) { return ERROR_WRONG_IDENTIFIER ; } <S2SV_StartBug> if ( chipRevision != DM9000A_CHIP_REV && chipRevision != DM9000B_CHIP_REV ) <S2SV_EndBug> { return ERROR_WRONG_IDENTIFIER ; } <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_GPR , 0x00 ) ; <S2SV_EndBug> sleep ( 10 ) ; <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_NCR , NCR_RST ) ; <S2SV_EndBug> <S2SV_StartBug> while ( ( dm9000ReadReg ( DM9000_REG_NCR ) & NCR_RST ) != 0 ) <S2SV_EndBug> { } <S2SV_StartBug> dm9000WritePhyReg ( DM9000_PHY_REG_BMCR , BMCR_RST ) ; <S2SV_EndBug> <S2SV_StartBug> while ( ( dm9000ReadPhyReg ( DM9000_PHY_REG_BMCR ) & BMCR_RST ) != 0 ) <S2SV_EndBug> { } TRACE_INFO ( \"<S2SV_blank><S2SV_blank>VID<S2SV_blank>=<S2SV_blank>0x%04\" PRIX16 \"\\\\r\\\\n\" , vendorId ) ; TRACE_INFO ( \"<S2SV_blank><S2SV_blank>PID<S2SV_blank>=<S2SV_blank>0x%04\" PRIX16 \"\\\\r\\\\n\" , productId ) ; <S2SV_StartBug> TRACE_INFO ( \"<S2SV_blank><S2SV_blank>CHIPR<S2SV_blank>=<S2SV_blank>0x%02\" PRIX8 \"\\\\r\\\\n\" , chipRevision ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_INFO ( \"<S2SV_blank><S2SV_blank>PHYIDR1<S2SV_blank>=<S2SV_blank>0x%04\" PRIX16 \"\\\\r\\\\n\" , dm9000ReadPhyReg ( DM9000_PHY_REG_PHYIDR1 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_INFO ( \"<S2SV_blank><S2SV_blank>PHYIDR2<S2SV_blank>=<S2SV_blank>0x%04\" PRIX16 \"\\\\r\\\\n\" , dm9000ReadPhyReg ( DM9000_PHY_REG_PHYIDR2 ) ) ; <S2SV_EndBug> # if ( DM9000_LOOPBACK_MODE == ENABLED ) <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_NCR , DM9000_LBK_PHY ) ; <S2SV_EndBug> <S2SV_StartBug> dm9000WritePhyReg ( DM9000_PHY_REG_BMCR , BMCR_LOOPBACK | BMCR_SPEED_SEL | BMCR_AN_EN | BMCR_DUPLEX_MODE ) ; <S2SV_EndBug> # endif for ( i = 0 ; i < 6 ; i ++ ) { <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_PAR0 + i , interface -> macAddr . b [ i ] ) ; <S2SV_EndBug> } for ( i = 0 ; i < 8 ; i ++ ) { <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_MAR0 + i , 0x00 ) ; <S2SV_EndBug> } <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_MAR7 , 0x80 ) ; <S2SV_EndBug> <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_IMR , IMR_PAR ) ; <S2SV_EndBug> dm9000WriteReg ( DM9000_REG_NSR , NSR_WAKEST | NSR_TX2END | NSR_TX1END ) ; dm9000WriteReg ( DM9000_REG_ISR , ISR_LNKCHG | ISR_UDRUN | ISR_ROO | ISR_ROS | ISR_PT | ISR_PR ) ; dm9000WriteReg ( DM9000_REG_IMR , IMR_PAR | IMR_LNKCHGI | IMR_PTI | IMR_PRI ) ; dm9000WriteReg ( DM9000_REG_RCR , RCR_DIS_LONG | RCR_DIS_CRC | RCR_RXEN ) ; osSetEvent ( & interface -> nicTxEvent ) ; interface -> nicEvent = TRUE ; osSetEvent ( & netEvent ) ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> productId ; uint8_t chipRev <S2SV_ModEnd> ; Dm9000Context * <S2SV_ModStart> ( dm9000ReadReg ( DM9000_VIDH <S2SV_ModEnd> ) << 8 <S2SV_ModStart> | dm9000ReadReg ( DM9000_VIDL <S2SV_ModEnd> ) ; productId <S2SV_ModStart> ( dm9000ReadReg ( DM9000_PIDH <S2SV_ModEnd> ) << 8 <S2SV_ModStart> | dm9000ReadReg ( DM9000_PIDL ) ; chipRev <S2SV_ModEnd> = dm9000ReadReg ( <S2SV_ModStart> = dm9000ReadReg ( DM9000_CHIPR <S2SV_ModEnd> ) ; if <S2SV_ModStart> } if ( chipRev != DM9000_CHIPR_REV_A && chipRev != DM9000_CHIPR_REV_B <S2SV_ModEnd> ) { return <S2SV_ModStart> } dm9000WriteReg ( DM9000_GPR <S2SV_ModEnd> , 0x00 ) <S2SV_ModStart> ; dm9000WriteReg ( DM9000_NCR , DM9000_NCR_RST <S2SV_ModEnd> ) ; while <S2SV_ModStart> ( dm9000ReadReg ( DM9000_NCR ) & DM9000_NCR_RST <S2SV_ModEnd> ) != 0 <S2SV_ModStart> } dm9000WritePhyReg ( DM9000_BMCR , DM9000_BMCR_RST <S2SV_ModEnd> ) ; while <S2SV_ModStart> ( dm9000ReadPhyReg ( DM9000_BMCR ) & DM9000_BMCR_RST <S2SV_ModEnd> ) != 0 <S2SV_ModStart> PRIX8 \"\\\\r\\\\n\" , chipRev <S2SV_ModEnd> ) ; TRACE_INFO <S2SV_ModStart> , dm9000ReadPhyReg ( DM9000_PHYIDR1 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> , dm9000ReadPhyReg ( DM9000_PHYIDR2 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ) dm9000WriteReg ( DM9000_NCR , DM9000_NCR_LBK_PHY <S2SV_ModEnd> ) ; dm9000WritePhyReg <S2SV_ModStart> ; dm9000WritePhyReg ( DM9000_BMCR , DM9000_BMCR_LOOPBACK | DM9000_BMCR_SPEED_SEL | DM9000_BMCR_AN_EN | DM9000_BMCR_DUPLEX_MODE <S2SV_ModEnd> ) ; # <S2SV_ModStart> { dm9000WriteReg ( DM9000_PAR0 <S2SV_ModEnd> + i , <S2SV_ModStart> { dm9000WriteReg ( DM9000_MAR0 <S2SV_ModEnd> + i , <S2SV_ModStart> } dm9000WriteReg ( DM9000_MAR7 <S2SV_ModEnd> , 0x80 ) <S2SV_ModStart> ; dm9000WriteReg ( DM9000_IMR , DM9000_IMR_PAR ) ; dm9000WriteReg ( DM9000_NSR , DM9000_NSR_WAKEST | DM9000_NSR_TX2END | DM9000_NSR_TX1END ) ; dm9000WriteReg ( DM9000_ISR , DM9000_ISR_LNKCHG | DM9000_ISR_UDRUN | DM9000_ISR_ROO | DM9000_ISR_ROS | DM9000_ISR_PT | DM9000_ISR_PR ) ; dm9000WriteReg ( DM9000_IMR , DM9000_IMR_PAR | DM9000_IMR_LNKCHGI | DM9000_IMR_PTI | DM9000_IMR_PRI ) ; dm9000WriteReg ( DM9000_RCR , DM9000_RCR_DIS_LONG | DM9000_RCR_DIS_CRC | DM9000_RCR_RXEN <S2SV_ModEnd> ) ; osSetEvent\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int64_t http_seek_internal ( URLContext * h , int64_t off , int whence , int force_reconnect ) { HTTPContext * s = h -> priv_data ; URLContext * old_hd = s -> hd ; <S2SV_StartBug> int64_t old_off = s -> off ; <S2SV_EndBug> uint8_t old_buf [ BUFFER_SIZE ] ; int old_buf_size , ret ; AVDictionary * options = NULL ; if ( whence == AVSEEK_SIZE ) return s -> filesize ; else if ( ! force_reconnect && ( ( whence == SEEK_CUR && off == 0 ) || ( whence == SEEK_SET && off == s -> off ) ) ) return s -> off ; <S2SV_StartBug> else if ( ( s -> filesize == - 1 && whence == SEEK_END ) ) <S2SV_EndBug> return AVERROR ( ENOSYS ) ; if ( whence == SEEK_CUR ) off += s -> off ; else if ( whence == SEEK_END ) off += s -> filesize ; else if ( whence != SEEK_SET ) return AVERROR ( EINVAL ) ; if ( off < 0 ) return AVERROR ( EINVAL ) ; s -> off = off ; if ( s -> off && h -> is_streamed ) return AVERROR ( ENOSYS ) ; old_buf_size = s -> buf_end - s -> buf_ptr ; memcpy ( old_buf , s -> buf_ptr , old_buf_size ) ; s -> hd = NULL ; if ( ( ret = http_open_cnx ( h , & options ) ) < 0 ) { av_dict_free ( & options ) ; memcpy ( s -> buffer , old_buf , old_buf_size ) ; s -> buf_ptr = s -> buffer ; s -> buf_end = s -> buffer + old_buf_size ; s -> hd = old_hd ; s -> off = old_off ; return ret ; } av_dict_free ( & options ) ; ffurl_close ( old_hd ) ; return off ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> hd ; uint64_t <S2SV_ModEnd> old_off = s <S2SV_ModStart> -> filesize == UINT64_MAX <S2SV_ModEnd> && whence ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5728\n\n```\nCWE-119 static long vop_ioctl ( struct file * f , unsigned int cmd , unsigned long arg ) { struct vop_vdev * vdev = f -> private_data ; struct vop_info * vi = vdev -> vi ; void __user * argp = ( void __user * ) arg ; int ret ; switch ( cmd ) { case MIC_VIRTIO_ADD_DEVICE : { struct mic_device_desc dd , * dd_config ; if ( copy_from_user ( & dd , argp , sizeof ( dd ) ) ) return - EFAULT ; if ( mic_aligned_desc_size ( & dd ) > MIC_MAX_DESC_BLK_SIZE || dd . num_vq > MIC_MAX_VRINGS ) return - EINVAL ; dd_config = kzalloc ( mic_desc_size ( & dd ) , GFP_KERNEL ) ; if ( ! dd_config ) return - ENOMEM ; if ( copy_from_user ( dd_config , argp , mic_desc_size ( & dd ) ) ) { ret = - EFAULT ; goto free_ret ; } <S2SV_StartBug> mutex_lock ( & vdev -> vdev_mutex ) ; <S2SV_EndBug> mutex_lock ( & vi -> vop_mutex ) ; ret = vop_virtio_add_device ( vdev , dd_config ) ; if ( ret ) goto unlock_ret ; list_add_tail ( & vdev -> list , & vi -> vdev_list ) ; unlock_ret : mutex_unlock ( & vi -> vop_mutex ) ; mutex_unlock ( & vdev -> vdev_mutex ) ; free_ret : kfree ( dd_config ) ; return ret ; } case MIC_VIRTIO_COPY_DESC : { struct mic_copy_desc copy ; mutex_lock ( & vdev -> vdev_mutex ) ; ret = vop_vdev_inited ( vdev ) ; if ( ret ) goto _unlock_ret ; if ( copy_from_user ( & copy , argp , sizeof ( copy ) ) ) { ret = - EFAULT ; goto _unlock_ret ; } ret = vop_virtio_copy_desc ( vdev , & copy ) ; if ( ret < 0 ) goto _unlock_ret ; if ( copy_to_user ( & ( ( struct mic_copy_desc __user * ) argp ) -> out_len , & copy . out_len , sizeof ( copy . out_len ) ) ) ret = - EFAULT ; _unlock_ret : mutex_unlock ( & vdev -> vdev_mutex ) ; return ret ; } case MIC_VIRTIO_CONFIG_CHANGE : { void * buf ; mutex_lock ( & vdev -> vdev_mutex ) ; ret = vop_vdev_inited ( vdev ) ; if ( ret ) goto __unlock_ret ; buf = kzalloc ( vdev -> dd -> config_len , GFP_KERNEL ) ; if ( ! buf ) { ret = - ENOMEM ; goto __unlock_ret ; } if ( copy_from_user ( buf , argp , vdev -> dd -> config_len ) ) { ret = - EFAULT ; goto done ; } ret = vop_virtio_config_change ( vdev , buf ) ; done : kfree ( buf ) ; __unlock_ret : mutex_unlock ( & vdev -> vdev_mutex ) ; return ret ; } default : return - ENOIOCTLCMD ; } ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> free_ret ; } if ( memcmp ( & dd , dd_config , sizeof ( dd ) ) ) { ret = - EINVAL ; goto free_ret ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void adapt_coef_probs ( VP9_COMMON * cm , TX_SIZE tx_size , unsigned int count_sat , unsigned int update_factor ) { const FRAME_CONTEXT * pre_fc = & cm -> frame_contexts [ cm -> frame_context_idx ] ; <S2SV_StartBug> vp9_coeff_probs_model * const probs = cm -> fc . coef_probs [ tx_size ] ; <S2SV_EndBug> const vp9_coeff_probs_model * const pre_probs = pre_fc -> coef_probs [ tx_size ] ; vp9_coeff_count_model * counts = cm -> counts . coef [ tx_size ] ; unsigned int ( * eob_counts ) [ REF_TYPES ] [ COEF_BANDS ] [ COEFF_CONTEXTS ] = cm -> counts . eob_branch [ tx_size ] ; int i , j , k , l , m ; for ( i = 0 ; i < PLANE_TYPES ; ++ i ) for ( j = 0 ; j < REF_TYPES ; ++ j ) for ( k = 0 ; k < COEF_BANDS ; ++ k ) for ( l = 0 ; l < BAND_COEFF_CONTEXTS ( k ) ; ++ l ) { const int n0 = counts [ i ] [ j ] [ k ] [ l ] [ ZERO_TOKEN ] ; const int n1 = counts [ i ] [ j ] [ k ] [ l ] [ ONE_TOKEN ] ; const int n2 = counts [ i ] [ j ] [ k ] [ l ] [ TWO_TOKEN ] ; const int neob = counts [ i ] [ j ] [ k ] [ l ] [ EOB_MODEL_TOKEN ] ; const unsigned int branch_ct [ UNCONSTRAINED_NODES ] [ 2 ] = { { neob , eob_counts [ i ] [ j ] [ k ] [ l ] - neob } , { n0 , n1 + n2 } , { n1 , n2 } } ; for ( m = 0 ; m < UNCONSTRAINED_NODES ; ++ m ) probs [ i ] [ j ] [ k ] [ l ] [ m ] = merge_probs ( pre_probs [ i ] [ j ] [ k ] [ l ] [ m ] , branch_ct [ m ] , count_sat , update_factor ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> coef_probs [ tx_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> swabHorDiff32 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { uint32 * wp = ( uint32 * ) cp0 ; tmsize_t wc = cc / 4 ; <S2SV_StartBug> horDiff32 ( tif , cp0 , cc ) ; <S2SV_EndBug> TIFFSwabArrayOfLong ( wp , wc ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> swabHorDiff32 ( TIFF <S2SV_ModStart> / 4 ; if ( ! <S2SV_ModStart> , cc ) ) return 0 <S2SV_ModStart> wc ) ; return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static void nfs_set_open_stateid_locked ( struct nfs4_state * state , nfs4_stateid * stateid , int open_flags ) <S2SV_EndBug> { if ( test_bit ( NFS_DELEGATED_STATE , & state -> flags ) == 0 ) memcpy ( state -> stateid . data , stateid -> data , sizeof ( state -> stateid . data ) ) ; memcpy ( state -> open_stateid . data , stateid -> data , sizeof ( state -> open_stateid . data ) ) ; <S2SV_StartBug> switch ( open_flags ) { <S2SV_EndBug> case FMODE_READ : set_bit ( NFS_O_RDONLY_STATE , & state -> flags ) ; break ; case FMODE_WRITE : set_bit ( NFS_O_WRONLY_STATE , & state -> flags ) ; break ; case FMODE_READ | FMODE_WRITE : set_bit ( NFS_O_RDWR_STATE , & state -> flags ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * stateid , fmode_t fmode <S2SV_ModEnd> ) { if <S2SV_ModStart> ; switch ( fmode <S2SV_ModEnd> ) { case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11494\n\n```\nCWE-200 static void slc_bump ( struct slcan * sl ) { struct sk_buff * skb ; struct can_frame cf ; int i , tmp ; u32 tmpid ; char * cmd = sl -> rbuff ; <S2SV_StartBug> cf . can_id = 0 ; <S2SV_EndBug> switch ( * cmd ) { case 'r' : cf . can_id = CAN_RTR_FLAG ; case 't' : cf . can_dlc = sl -> rbuff [ SLC_CMD_LEN + SLC_SFF_ID_LEN ] ; sl -> rbuff [ SLC_CMD_LEN + SLC_SFF_ID_LEN ] = 0 ; cmd += SLC_CMD_LEN + SLC_SFF_ID_LEN + 1 ; break ; case 'R' : cf . can_id = CAN_RTR_FLAG ; case 'T' : cf . can_id |= CAN_EFF_FLAG ; cf . can_dlc = sl -> rbuff [ SLC_CMD_LEN + SLC_EFF_ID_LEN ] ; sl -> rbuff [ SLC_CMD_LEN + SLC_EFF_ID_LEN ] = 0 ; cmd += SLC_CMD_LEN + SLC_EFF_ID_LEN + 1 ; break ; default : return ; } if ( kstrtou32 ( sl -> rbuff + SLC_CMD_LEN , 16 , & tmpid ) ) return ; cf . can_id |= tmpid ; if ( cf . can_dlc >= '0' && cf . can_dlc < '9' ) cf . can_dlc -= '0' ; else return ; <S2SV_StartBug> * ( u64 * ) ( & cf . data ) = 0 ; <S2SV_EndBug> if ( ! ( cf . can_id & CAN_RTR_FLAG ) ) { for ( i = 0 ; i < cf . can_dlc ; i ++ ) { tmp = hex_to_bin ( * cmd ++ ) ; if ( tmp < 0 ) return ; cf . data [ i ] = ( tmp << 4 ) ; tmp = hex_to_bin ( * cmd ++ ) ; if ( tmp < 0 ) return ; cf . data [ i ] |= tmp ; } } skb = dev_alloc_skb ( sizeof ( struct can_frame ) + sizeof ( struct can_skb_priv ) ) ; if ( ! skb ) return ; skb -> dev = sl -> dev ; skb -> protocol = htons ( ETH_P_CAN ) ; skb -> pkt_type = PACKET_BROADCAST ; skb -> ip_summed = CHECKSUM_UNNECESSARY ; can_skb_reserve ( skb ) ; can_skb_prv ( skb ) -> ifindex = sl -> dev -> ifindex ; can_skb_prv ( skb ) -> skbcnt = 0 ; skb_put_data ( skb , & cf , sizeof ( struct can_frame ) ) ; sl -> dev -> stats . rx_packets ++ ; sl -> dev -> stats . rx_bytes += cf . can_dlc ; netif_rx_ni ( skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rbuff ; memset ( & cf , 0 , sizeof ( cf ) ) <S2SV_ModEnd> ; switch ( <S2SV_ModStart> else return ; <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13045\n\n```\nCWE-416 static void destroy_server_connect ( SERVER_CONNECT_REC * conn ) { IRC_SERVER_CONNECT_REC * ircconn ; ircconn = IRC_SERVER_CONNECT ( conn ) ; if ( ircconn == NULL ) return ; g_free_not_null ( ircconn -> usermode ) ; g_free_not_null ( ircconn -> alternate_nick ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> alternate_nick ) ; g_free_not_null ( ircconn -> sasl_username ) ; g_free_not_null ( ircconn -> sasl_password ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12232\n\n```\nCWE-362 static int sockfs_setattr ( struct dentry * dentry , struct iattr * iattr ) { int err = simple_setattr ( dentry , iattr ) ; if ( ! err && ( iattr -> ia_valid & ATTR_UID ) ) { struct socket * sock = SOCKET_I ( d_inode ( dentry ) ) ; <S2SV_StartBug> sock -> sk -> sk_uid = iattr -> ia_uid ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( sock -> sk ) <S2SV_ModStart> -> ia_uid ; else err = - ENOENT ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2674\n\n```\nCWE-189 void * chk_malloc ( size_t bytes ) { <S2SV_StartBug> char * buffer = ( char * ) dlmalloc ( bytes + CHK_OVERHEAD_SIZE ) ; <S2SV_EndBug> if ( buffer ) { memset ( buffer , CHK_SENTINEL_VALUE , bytes + CHK_OVERHEAD_SIZE ) ; size_t offset = dlmalloc_usable_size ( buffer ) - sizeof ( size_t ) ; * ( size_t * ) ( buffer + offset ) = bytes ; buffer += CHK_SENTINEL_HEAD_SIZE ; } return buffer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bytes ) { size_t size = bytes + CHK_OVERHEAD_SIZE ; if ( size < bytes ) { return NULL ; } uint8_t <S2SV_ModEnd> * buffer = <S2SV_ModStart> buffer = ( uint8_t <S2SV_ModEnd> * ) dlmalloc <S2SV_ModStart> ) dlmalloc ( size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4302\n\n```\nCWE-119 static int parse_codes ( struct archive_read * a ) { int i , j , val , n , r ; unsigned char bitlengths [ MAX_SYMBOLS ] , zerocount , ppmd_flags ; unsigned int maxorder ; struct huffman_code precode ; struct rar * rar = ( struct rar * ) ( a -> format -> data ) ; struct rar_br * br = & ( rar -> br ) ; free_codes ( a ) ; rar_br_consume_unalined_bits ( br ) ; if ( ! rar_br_read_ahead ( a , br , 1 ) ) goto truncated_data ; if ( ( rar -> is_ppmd_block = rar_br_bits ( br , 1 ) ) != 0 ) { rar_br_consume ( br , 1 ) ; if ( ! rar_br_read_ahead ( a , br , 7 ) ) goto truncated_data ; ppmd_flags = rar_br_bits ( br , 7 ) ; rar_br_consume ( br , 7 ) ; if ( ppmd_flags & 0x20 ) { if ( ! rar_br_read_ahead ( a , br , 8 ) ) goto truncated_data ; rar -> dictionary_size = ( rar_br_bits ( br , 8 ) + 1 ) << 20 ; rar_br_consume ( br , 8 ) ; } if ( ppmd_flags & 0x40 ) { if ( ! rar_br_read_ahead ( a , br , 8 ) ) goto truncated_data ; rar -> ppmd_escape = rar -> ppmd7_context . InitEsc = rar_br_bits ( br , 8 ) ; rar_br_consume ( br , 8 ) ; } else rar -> ppmd_escape = 2 ; if ( ppmd_flags & 0x20 ) { maxorder = ( ppmd_flags & 0x1F ) + 1 ; if ( maxorder > 16 ) maxorder = 16 + ( maxorder - 16 ) * 3 ; if ( maxorder == 1 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Truncated<S2SV_blank>RAR<S2SV_blank>file<S2SV_blank>data\" ) ; return ( ARCHIVE_FATAL ) ; } __archive_ppmd7_functions . Ppmd7_Free ( & rar -> ppmd7_context , & g_szalloc ) ; rar -> bytein . a = a ; rar -> bytein . Read = & ppmd_read ; __archive_ppmd7_functions . PpmdRAR_RangeDec_CreateVTable ( & rar -> range_dec ) ; rar -> range_dec . Stream = & rar -> bytein ; __archive_ppmd7_functions . Ppmd7_Construct ( & rar -> ppmd7_context ) ; <S2SV_StartBug> if ( ! __archive_ppmd7_functions . Ppmd7_Alloc ( & rar -> ppmd7_context , <S2SV_EndBug> rar -> dictionary_size , & g_szalloc ) ) { archive_set_error ( & a -> archive , ENOMEM , \"Out<S2SV_blank>of<S2SV_blank>memory\" ) ; return ( ARCHIVE_FATAL ) ; } if ( ! __archive_ppmd7_functions . PpmdRAR_RangeDec_Init ( & rar -> range_dec ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unable<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>PPMd<S2SV_blank>range<S2SV_blank>decoder\" ) ; return ( ARCHIVE_FATAL ) ; } __archive_ppmd7_functions . Ppmd7_Init ( & rar -> ppmd7_context , maxorder ) ; rar -> ppmd_valid = 1 ; } else { if ( ! rar -> ppmd_valid ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>PPMd<S2SV_blank>sequence\" ) ; return ( ARCHIVE_FATAL ) ; } if ( ! __archive_ppmd7_functions . PpmdRAR_RangeDec_Init ( & rar -> range_dec ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unable<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>PPMd<S2SV_blank>range<S2SV_blank>decoder\" ) ; return ( ARCHIVE_FATAL ) ; } } } else { rar_br_consume ( br , 1 ) ; if ( ! rar_br_read_ahead ( a , br , 1 ) ) goto truncated_data ; if ( ! rar_br_bits ( br , 1 ) ) memset ( rar -> lengthtable , 0 , sizeof ( rar -> lengthtable ) ) ; rar_br_consume ( br , 1 ) ; memset ( & bitlengths , 0 , sizeof ( bitlengths ) ) ; for ( i = 0 ; i < MAX_SYMBOLS ; ) { if ( ! rar_br_read_ahead ( a , br , 4 ) ) goto truncated_data ; bitlengths [ i ++ ] = rar_br_bits ( br , 4 ) ; rar_br_consume ( br , 4 ) ; if ( bitlengths [ i - 1 ] == 0xF ) { if ( ! rar_br_read_ahead ( a , br , 4 ) ) goto truncated_data ; zerocount = rar_br_bits ( br , 4 ) ; rar_br_consume ( br , 4 ) ; if ( zerocount ) { i -- ; for ( j = 0 ; j < zerocount + 2 && i < MAX_SYMBOLS ; j ++ ) bitlengths [ i ++ ] = 0 ; } } } memset ( & precode , 0 , sizeof ( precode ) ) ; r = create_code ( a , & precode , bitlengths , MAX_SYMBOLS , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) { free ( precode . tree ) ; free ( precode . table ) ; return ( r ) ; } for ( i = 0 ; i < HUFFMAN_TABLE_SIZE ; ) { if ( ( val = read_next_symbol ( a , & precode ) ) < 0 ) { free ( precode . tree ) ; free ( precode . table ) ; return ( ARCHIVE_FATAL ) ; } if ( val < 16 ) { rar -> lengthtable [ i ] = ( rar -> lengthtable [ i ] + val ) & 0xF ; i ++ ; } else if ( val < 18 ) { if ( i == 0 ) { free ( precode . tree ) ; free ( precode . table ) ; archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Internal<S2SV_blank>error<S2SV_blank>extracting<S2SV_blank>RAR<S2SV_blank>file.\" ) ; return ( ARCHIVE_FATAL ) ; } if ( val == 16 ) { if ( ! rar_br_read_ahead ( a , br , 3 ) ) { free ( precode . tree ) ; free ( precode . table ) ; goto truncated_data ; } n = rar_br_bits ( br , 3 ) + 3 ; rar_br_consume ( br , 3 ) ; } else { if ( ! rar_br_read_ahead ( a , br , 7 ) ) { free ( precode . tree ) ; free ( precode . table ) ; goto truncated_data ; } n = rar_br_bits ( br , 7 ) + 11 ; rar_br_consume ( br , 7 ) ; } for ( j = 0 ; j < n && i < HUFFMAN_TABLE_SIZE ; j ++ ) { rar -> lengthtable [ i ] = rar -> lengthtable [ i - 1 ] ; i ++ ; } } else { if ( val == 18 ) { if ( ! rar_br_read_ahead ( a , br , 3 ) ) { free ( precode . tree ) ; free ( precode . table ) ; goto truncated_data ; } n = rar_br_bits ( br , 3 ) + 3 ; rar_br_consume ( br , 3 ) ; } else { if ( ! rar_br_read_ahead ( a , br , 7 ) ) { free ( precode . tree ) ; free ( precode . table ) ; goto truncated_data ; } n = rar_br_bits ( br , 7 ) + 11 ; rar_br_consume ( br , 7 ) ; } for ( j = 0 ; j < n && i < HUFFMAN_TABLE_SIZE ; j ++ ) rar -> lengthtable [ i ++ ] = 0 ; } } free ( precode . tree ) ; free ( precode . table ) ; r = create_code ( a , & rar -> maincode , & rar -> lengthtable [ 0 ] , MAINCODE_SIZE , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) return ( r ) ; r = create_code ( a , & rar -> offsetcode , & rar -> lengthtable [ MAINCODE_SIZE ] , OFFSETCODE_SIZE , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) return ( r ) ; r = create_code ( a , & rar -> lowoffsetcode , & rar -> lengthtable [ MAINCODE_SIZE + OFFSETCODE_SIZE ] , LOWOFFSETCODE_SIZE , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) return ( r ) ; r = create_code ( a , & rar -> lengthcode , & rar -> lengthtable [ MAINCODE_SIZE + OFFSETCODE_SIZE + LOWOFFSETCODE_SIZE ] , LENGTHCODE_SIZE , MAX_SYMBOL_LENGTH ) ; if ( r != ARCHIVE_OK ) return ( r ) ; } if ( ! rar -> dictionary_size || ! rar -> lzss . window ) { void * new_window ; unsigned int new_size ; if ( rar -> unp_size >= DICTIONARY_MAX_SIZE ) new_size = DICTIONARY_MAX_SIZE ; else new_size = rar_fls ( ( unsigned int ) rar -> unp_size ) << 1 ; new_window = realloc ( rar -> lzss . window , new_size ) ; if ( new_window == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>uncompressed<S2SV_blank>data.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> lzss . window = ( unsigned char * ) new_window ; rar -> dictionary_size = new_size ; memset ( rar -> lzss . window , 0 , rar -> dictionary_size ) ; rar -> lzss . mask = rar -> dictionary_size - 1 ; } rar -> start_new_table = 0 ; return ( ARCHIVE_OK ) ; truncated_data : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Truncated<S2SV_blank>RAR<S2SV_blank>file<S2SV_blank>data\" ) ; rar -> valid = 0 ; return ( ARCHIVE_FATAL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( rar -> dictionary_size == 0 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>zero<S2SV_blank>dictionary<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11368\n\n```\nCWE-617 static krb5_error_code kdc_process_for_user ( kdc_realm_t * kdc_active_realm , krb5_pa_data * pa_data , krb5_keyblock * tgs_session , krb5_pa_s4u_x509_user * * s4u_x509_user , const char * * status ) { krb5_error_code code ; krb5_pa_for_user * for_user ; krb5_data req_data ; req_data . length = pa_data -> length ; req_data . data = ( char * ) pa_data -> contents ; code = decode_krb5_pa_for_user ( & req_data , & for_user ) ; if ( code ) <S2SV_StartBug> return code ; <S2SV_EndBug> code = verify_for_user_checksum ( kdc_context , tgs_session , for_user ) ; if ( code ) { * status = \"INVALID_S4U2SELF_CHECKSUM\" ; krb5_free_pa_for_user ( kdc_context , for_user ) ; return code ; } * s4u_x509_user = calloc ( 1 , sizeof ( krb5_pa_s4u_x509_user ) ) ; if ( * s4u_x509_user == NULL ) { krb5_free_pa_for_user ( kdc_context , for_user ) ; return ENOMEM ; } ( * s4u_x509_user ) -> user_id . user = for_user -> user ; for_user -> user = NULL ; krb5_free_pa_for_user ( kdc_context , for_user ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( code ) { * status = \"DECODE_PA_FOR_USER\" ; return code ; } <S2SV_ModEnd> code = verify_for_user_checksum\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12932\n\n```\nCWE-416 static int php_var_unserialize_internal ( UNSERIALIZE_PARAMETER ) { const unsigned char * cursor , * limit , * marker , * start ; zval * rval_ref ; limit = max ; cursor = * p ; if ( YYCURSOR >= YYLIMIT ) { return 0 ; } if ( var_hash && ( * p ) [ 0 ] != 'R' ) { var_push ( var_hash , rval ) ; } start = cursor ; <S2SV_StartBug> # line 585 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> { YYCTYPE yych ; static const unsigned char yybm [ ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , } ; if ( ( YYLIMIT - YYCURSOR ) < 7 ) YYFILL ( 7 ) ; yych = * YYCURSOR ; switch ( yych ) { case 'C' : <S2SV_StartBug> case 'O' : goto yy13 ; <S2SV_EndBug> case 'N' : goto yy5 ; <S2SV_StartBug> case 'R' : goto yy2 ; <S2SV_EndBug> <S2SV_StartBug> case 'S' : goto yy10 ; <S2SV_EndBug> <S2SV_StartBug> case 'a' : goto yy11 ; <S2SV_EndBug> <S2SV_StartBug> case 'b' : goto yy6 ; <S2SV_EndBug> <S2SV_StartBug> case 'd' : goto yy8 ; <S2SV_EndBug> <S2SV_StartBug> case 'i' : goto yy7 ; <S2SV_EndBug> case 'o' : goto yy12 ; <S2SV_StartBug> case 'r' : goto yy4 ; <S2SV_EndBug> <S2SV_StartBug> case 's' : goto yy9 ; <S2SV_EndBug> <S2SV_StartBug> case '}' : goto yy14 ; <S2SV_EndBug> <S2SV_StartBug> default : goto yy16 ; <S2SV_EndBug> } yy2 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy95 ; yy3 : <S2SV_StartBug> # line 962 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { return 0 ; } <S2SV_StartBug> # line 646 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy4 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy89 ; <S2SV_EndBug> goto yy3 ; yy5 : yych = * ++ YYCURSOR ; <S2SV_StartBug> if ( yych == ';' ) goto yy87 ; <S2SV_EndBug> goto yy3 ; yy6 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy83 ; <S2SV_EndBug> goto yy3 ; yy7 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy77 ; <S2SV_EndBug> goto yy3 ; yy8 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy53 ; <S2SV_EndBug> goto yy3 ; yy9 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy46 ; <S2SV_EndBug> goto yy3 ; yy10 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy39 ; <S2SV_EndBug> goto yy3 ; yy11 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy32 ; <S2SV_EndBug> goto yy3 ; yy12 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy25 ; <S2SV_EndBug> goto yy3 ; yy13 : yych = * ( YYMARKER = ++ YYCURSOR ) ; <S2SV_StartBug> if ( yych == ':' ) goto yy17 ; <S2SV_EndBug> goto yy3 ; <S2SV_StartBug> yy14 : <S2SV_EndBug> ++ YYCURSOR ; <S2SV_StartBug> # line 956 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { php_error_docref ( NULL , E_NOTICE , \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>serialized<S2SV_blank>data\" ) ; return 0 ; } <S2SV_StartBug> # line 695 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy16 : yych = * ++ YYCURSOR ; goto yy3 ; yy17 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { <S2SV_StartBug> goto yy20 ; <S2SV_EndBug> } <S2SV_StartBug> if ( yych == '+' ) goto yy19 ; <S2SV_EndBug> yy18 : YYCURSOR = YYMARKER ; goto yy3 ; yy19 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { <S2SV_StartBug> goto yy20 ; <S2SV_EndBug> } goto yy18 ; yy20 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { <S2SV_StartBug> goto yy20 ; <S2SV_EndBug> } if ( yych <= '/' ) goto yy18 ; <S2SV_StartBug> if ( yych >= ';' ) goto yy18 ; <S2SV_EndBug> yych = * ++ YYCURSOR ; <S2SV_StartBug> if ( yych != \\'\"\\' ) goto yy18 ; <S2SV_EndBug> ++ YYCURSOR ; <S2SV_StartBug> # line 804 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , len2 , len3 , maxlen ; zend_long elements ; char * str ; zend_string * class_name ; zend_class_entry * ce ; int incomplete_class = 0 ; int custom_object = 0 ; zval user_func ; zval retval ; zval args [ 1 ] ; if ( ! var_hash ) return 0 ; <S2SV_StartBug> if ( * start == 'C' ) { <S2SV_EndBug> custom_object = 1 ; } <S2SV_StartBug> len2 = len = parse_uiv ( start + 2 ) ; <S2SV_EndBug> maxlen = max - YYCURSOR ; if ( maxlen < len || len == 0 ) { <S2SV_StartBug> * p = start + 2 ; <S2SV_EndBug> return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ':' ) { * p = YYCURSOR + 1 ; return 0 ; } len3 = strspn ( str , \"0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\\\\177\\\\200\\\\201\\\\202\\\\203\\\\204\\\\205\\\\206\\\\207\\\\210\\\\211\\\\212\\\\213\\\\214\\\\215\\\\216\\\\217\\\\220\\\\221\\\\222\\\\223\\\\224\\\\225\\\\226\\\\227\\\\230\\\\231\\\\232\\\\233\\\\234\\\\235\\\\236\\\\237\\\\240\\\\241\\\\242\\\\243\\\\244\\\\245\\\\246\\\\247\\\\250\\\\251\\\\252\\\\253\\\\254\\\\255\\\\256\\\\257\\\\260\\\\261\\\\262\\\\263\\\\264\\\\265\\\\266\\\\267\\\\270\\\\271\\\\272\\\\273\\\\274\\\\275\\\\276\\\\277\\\\300\\\\301\\\\302\\\\303\\\\304\\\\305\\\\306\\\\307\\\\310\\\\311\\\\312\\\\313\\\\314\\\\315\\\\316\\\\317\\\\320\\\\321\\\\322\\\\323\\\\324\\\\325\\\\326\\\\327\\\\330\\\\331\\\\332\\\\333\\\\334\\\\335\\\\336\\\\337\\\\340\\\\341\\\\342\\\\343\\\\344\\\\345\\\\346\\\\347\\\\350\\\\351\\\\352\\\\353\\\\354\\\\355\\\\356\\\\357\\\\360\\\\361\\\\362\\\\363\\\\364\\\\365\\\\366\\\\367\\\\370\\\\371\\\\372\\\\373\\\\374\\\\375\\\\376\\\\377\\\\\\\\\" ) ; if ( len3 != len ) { * p = YYCURSOR + len3 - len ; return 0 ; } class_name = zend_string_init ( str , len , 0 ) ; do { if ( ! unserialize_allowed_class ( class_name , classes ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } BG ( serialize_lock ) ++ ; ce = zend_lookup_class ( class_name ) ; if ( ce ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; return 0 ; } break ; } BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; return 0 ; } if ( ( PG ( unserialize_callback_func ) == NULL ) || ( PG ( unserialize_callback_func ) [ 0 ] == '\\\\0' ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } ZVAL_STRING ( & user_func , PG ( unserialize_callback_func ) ) ; ZVAL_STR_COPY ( & args [ 0 ] , class_name ) ; BG ( serialize_lock ) ++ ; if ( call_user_function_ex ( CG ( function_table ) , NULL , & user_func , & retval , 1 , args , 0 , NULL ) != SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; return 0 ; } php_error_docref ( NULL , E_WARNING , \"defined<S2SV_blank>(%s)<S2SV_blank>but<S2SV_blank>not<S2SV_blank>found\" , Z_STRVAL ( user_func ) ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; break ; } BG ( serialize_lock ) -- ; zval_ptr_dtor ( & retval ) ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; return 0 ; } BG ( serialize_lock ) ++ ; if ( ( ce = zend_lookup_class ( class_name ) ) == NULL ) { php_error_docref ( NULL , E_WARNING , \"Function<S2SV_blank>%s()<S2SV_blank>hasn\\'t<S2SV_blank>defined<S2SV_blank>the<S2SV_blank>class<S2SV_blank>it<S2SV_blank>was<S2SV_blank>called<S2SV_blank>for\" , Z_STRVAL ( user_func ) ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; } BG ( serialize_lock ) -- ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; break ; } while ( 1 ) ; * p = YYCURSOR ; if ( custom_object ) { int ret ; ret = object_custom ( UNSERIALIZE_PASSTHRU , ce ) ; if ( ret && incomplete_class ) { php_store_class_name ( rval , ZSTR_VAL ( class_name ) , len2 ) ; } zend_string_release ( class_name ) ; return ret ; } elements = object_common1 ( UNSERIALIZE_PASSTHRU , ce ) ; if ( elements < 0 ) { zend_string_release ( class_name ) ; return 0 ; } if ( incomplete_class ) { php_store_class_name ( rval , ZSTR_VAL ( class_name ) , len2 ) ; } zend_string_release ( class_name ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } <S2SV_StartBug> # line 878 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy25 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy26 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; goto yy18 ; } yy26 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy27 : ++ YYCURSOR ; <S2SV_StartBug> if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; <S2SV_EndBug> yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; <S2SV_StartBug> if ( yych <= '9' ) goto yy27 ; <S2SV_EndBug> if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 793 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { zend_long elements ; if ( ! var_hash ) return 0 ; elements = object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ; if ( elements < 0 || elements >= HT_MAX_SIZE ) { return 0 ; } return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } # line 914 \"ext/standard/var_unserializer.c\" yy32 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy33 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; goto yy18 ; yy33 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy34 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != '{' ) goto yy18 ; ++ YYCURSOR ; # line 769 \"ext/standard/var_unserializer.re\" { <S2SV_StartBug> zend_long elements = parse_iv ( start + 2 ) ; <S2SV_EndBug> * p = YYCURSOR ; if ( ! var_hash ) return 0 ; if ( elements < 0 || elements >= HT_MAX_SIZE ) { return 0 ; } array_init_size ( rval , elements ) ; if ( elements ) { zend_hash_real_init ( Z_ARRVAL_P ( rval ) , 0 ) ; } if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_ARRVAL_P ( rval ) , elements , 0 ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; } <S2SV_StartBug> # line 959 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy39 : yych = * ++ YYCURSOR ; <S2SV_StartBug> if ( yych == '+' ) goto yy40 ; <S2SV_EndBug> if ( yych <= '/' ) goto yy18 ; <S2SV_StartBug> if ( yych <= '9' ) goto yy41 ; <S2SV_EndBug> goto yy18 ; yy40 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy41 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 735 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; zend_string * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } if ( ( str = unserialize_str ( & YYCURSOR , len , maxlen ) ) == NULL ) { return 0 ; } if ( * ( YYCURSOR ) != \\'\"\\' ) { zend_string_free ( str ) ; * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { efree ( str ) ; * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; ZVAL_STR ( rval , str ) ; return 1 ; } # line 1014 \"ext/standard/var_unserializer.c\" yy46 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy47 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; goto yy18 ; yy47 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy48 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; # line 703 \"ext/standard/var_unserializer.re\" { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; ZVAL_STRINGL ( rval , str , len ) ; return 1 ; } # line 1067 \"ext/standard/var_unserializer.c\" yy53 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych <= ',' ) { if ( yych == '+' ) goto yy57 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy55 ; if ( yych <= '.' ) goto yy60 ; goto yy18 ; } } else { if ( yych <= 'I' ) { if ( yych <= '9' ) goto yy58 ; if ( yych <= 'H' ) goto yy18 ; goto yy56 ; } else { if ( yych != 'N' ) goto yy18 ; } } yych = * ++ YYCURSOR ; if ( yych == 'A' ) goto yy76 ; goto yy18 ; yy55 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych == '.' ) goto yy60 ; goto yy18 ; } else { if ( yych <= '9' ) goto yy58 ; if ( yych != 'I' ) goto yy18 ; } yy56 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy72 ; goto yy18 ; yy57 : yych = * ++ YYCURSOR ; if ( yych == '.' ) goto yy60 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy58 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ':' ) { if ( yych <= '.' ) { if ( yych <= '-' ) goto yy18 ; goto yy70 ; } else { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy58 ; goto yy18 ; } } else { if ( yych <= 'E' ) { if ( yych <= ';' ) goto yy63 ; if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy60 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy61 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy61 ; if ( yych <= ':' ) goto yy18 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy63 : ++ YYCURSOR ; # line 694 \"ext/standard/var_unserializer.re\" { # if SIZEOF_ZEND_LONG == 4 use_double : # endif * p = YYCURSOR ; ZVAL_DOUBLE ( rval , zend_strtod ( ( const char * ) start + 2 , NULL ) ) ; return 1 ; } # line 1164 \"ext/standard/var_unserializer.c\" yy65 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy66 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; } yy66 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy69 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy69 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; } yy67 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; if ( yych == ';' ) goto yy63 ; goto yy18 ; yy69 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; yy70 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy70 ; if ( yych <= ':' ) goto yy18 ; goto yy63 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy72 : yych = * ++ YYCURSOR ; if ( yych != 'F' ) goto yy18 ; yy73 : yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 678 \"ext/standard/var_unserializer.re\" { * p = YYCURSOR ; if ( ! strncmp ( ( char * ) start + 2 , \"NAN\" , 3 ) ) { ZVAL_DOUBLE ( rval , php_get_nan ( ) ) ; } else if ( ! strncmp ( ( char * ) start + 2 , \"INF\" , 3 ) ) { ZVAL_DOUBLE ( rval , php_get_inf ( ) ) ; } else if ( ! strncmp ( ( char * ) start + 2 , \"-INF\" , 4 ) ) { ZVAL_DOUBLE ( rval , - php_get_inf ( ) ) ; } else { ZVAL_NULL ( rval ) ; } return 1 ; } # line 1239 \"ext/standard/var_unserializer.c\" yy76 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy73 ; goto yy18 ; yy77 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy78 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; goto yy18 ; } yy78 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy79 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 652 \"ext/standard/var_unserializer.re\" { # if SIZEOF_ZEND_LONG == 4 int digits = YYCURSOR - start - 3 ; if ( start [ 2 ] == '-' || start [ 2 ] == '+' ) { digits -- ; } if ( digits >= MAX_LENGTH_OF_LONG - 1 ) { if ( digits == MAX_LENGTH_OF_LONG - 1 ) { int cmp = strncmp ( ( char * ) YYCURSOR - MAX_LENGTH_OF_LONG , long_min_digits , MAX_LENGTH_OF_LONG - 1 ) ; if ( ! ( cmp < 0 || ( cmp == 0 && start [ 2 ] == '-' ) ) ) { goto use_double ; } } else { goto use_double ; } } # endif * p = YYCURSOR ; ZVAL_LONG ( rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1292 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy83 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= '2' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 646 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; <S2SV_StartBug> ZVAL_BOOL ( rval , parse_iv ( start + 2 ) ) ; <S2SV_EndBug> return 1 ; } <S2SV_StartBug> # line 1306 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy87 : ++ YYCURSOR ; <S2SV_StartBug> # line 640 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; ZVAL_NULL ( rval ) ; return 1 ; } # line 1315 \"ext/standard/var_unserializer.c\" yy89 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy90 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; goto yy18 ; } yy90 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy91 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 615 \"ext/standard/var_unserializer.re\" { zend_long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; <S2SV_StartBug> id = parse_iv ( start + 2 ) - 1 ; <S2SV_EndBug> if ( id == - 1 || ( rval_ref = var_access ( var_hash , id ) ) == NULL ) { return 0 ; } if ( rval_ref == rval ) { return 0 ; } if ( Z_ISUNDEF_P ( rval_ref ) || ( Z_ISREF_P ( rval_ref ) && Z_ISUNDEF_P ( Z_REFVAL_P ( rval_ref ) ) ) ) { ZVAL_UNDEF ( rval ) ; return 1 ; } ZVAL_COPY ( rval , rval_ref ) ; return 1 ; } # line 1363 \"ext/standard/var_unserializer.c\" yy95 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy96 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; goto yy18 ; } yy96 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy97 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 589 \"ext/standard/var_unserializer.re\" { zend_long id ; <S2SV_StartBug> * p = YYCURSOR ; <S2SV_EndBug> if ( ! var_hash ) return 0 ; <S2SV_StartBug> id = parse_iv ( start + 2 ) - 1 ; <S2SV_EndBug> if ( id == - 1 || ( rval_ref = var_access ( var_hash , id ) ) == NULL ) { return 0 ; } <S2SV_StartBug> zval_ptr_dtor ( rval ) ; <S2SV_EndBug> if ( Z_ISUNDEF_P ( rval_ref ) || ( Z_ISREF_P ( rval_ref ) && Z_ISUNDEF_P ( Z_REFVAL_P ( rval_ref ) ) ) ) { ZVAL_UNDEF ( rval ) ; return 1 ; } <S2SV_StartBug> if ( Z_ISREF_P ( rval_ref ) ) { <S2SV_EndBug> <S2SV_StartBug> ZVAL_COPY ( rval , rval_ref ) ; <S2SV_EndBug> } else { <S2SV_StartBug> ZVAL_NEW_REF ( rval_ref , rval_ref ) ; <S2SV_EndBug> <S2SV_StartBug> ZVAL_COPY ( rval , rval_ref ) ; <S2SV_EndBug> } return 1 ; } <S2SV_StartBug> # line 1412 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> } # line 964 \"ext/standard/var_unserializer.re\" return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # line 576 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" { YYCTYPE <S2SV_ModStart> 'O' : goto yy4 <S2SV_ModEnd> ; case 'N' <S2SV_ModStart> 'R' : goto yy6 <S2SV_ModEnd> ; case 'S' <S2SV_ModStart> 'S' : goto yy7 <S2SV_ModEnd> ; case 'a' <S2SV_ModStart> 'a' : goto yy8 <S2SV_ModEnd> ; case 'b' <S2SV_ModStart> 'b' : goto yy9 <S2SV_ModEnd> ; case 'd' <S2SV_ModStart> 'd' : goto yy10 <S2SV_ModEnd> ; case 'i' <S2SV_ModStart> 'i' : goto yy11 <S2SV_ModEnd> ; case 'o' <S2SV_ModStart> 'r' : goto yy13 <S2SV_ModEnd> ; case 's' <S2SV_ModStart> 's' : goto yy14 <S2SV_ModEnd> ; case '}' <S2SV_ModStart> '}' : goto yy15 <S2SV_ModEnd> ; default : <S2SV_ModStart> default : goto yy2 ; } yy2 : ++ YYCURSOR <S2SV_ModEnd> ; yy3 : <S2SV_ModStart> : # line 951 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { return <S2SV_ModStart> } # line 636 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy4 : <S2SV_ModStart> ':' ) goto yy17 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ';' ) goto yy19 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ':' ) goto yy21 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ':' ) goto yy22 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ':' ) goto yy23 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ':' ) goto yy24 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ':' ) goto yy25 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ':' ) goto yy26 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ':' ) goto yy27 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> ':' ) goto yy28 <S2SV_ModEnd> ; goto yy3 <S2SV_ModStart> yy3 ; yy14 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy29 ; goto yy3 ; yy15 <S2SV_ModStart> ; # line 945 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { php_error_docref <S2SV_ModStart> } # line 689 \"ext/standard/var_unserializer.c\" <S2SV_ModEnd> yy17 : yych <S2SV_ModStart> ) { goto yy31 <S2SV_ModEnd> ; } if <S2SV_ModStart> '+' ) goto yy30 ; yy18 : YYCURSOR = YYMARKER ; goto yy3 ; yy19 : ++ YYCURSOR ; # line 629 \"ext/standard/var_unserializer.re\" { * p = YYCURSOR ; ZVAL_NULL ( rval ) ; return 1 ; } # line 707 \"ext/standard/var_unserializer.c\" yy21 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy33 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy33 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; goto yy18 ; } yy22 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy36 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy37 ; goto yy18 ; yy23 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy39 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy40 ; goto yy18 ; yy24 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '1' ) goto yy42 ; goto yy18 ; yy25 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych <= ',' ) { if ( yych == '+' ) goto yy43 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy44 ; if ( yych <= '.' ) goto yy45 ; goto yy18 ; } } else { if ( yych <= 'I' ) { if ( yych <= '9' ) goto yy46 ; if ( yych <= 'H' ) goto yy18 ; goto yy48 ; } else { if ( yych == 'N' ) goto yy49 ; goto yy18 ; } } yy26 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy50 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy50 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy51 ; goto yy18 ; } yy27 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy53 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy53 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy54 ; goto yy18 ; } yy28 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy56 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy56 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy57 ; goto yy18 ; } yy29 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy59 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy60 ; goto yy18 ; yy30 <S2SV_ModEnd> : yych = <S2SV_ModStart> ) { goto yy31 ; } goto yy18 ; yy31 <S2SV_ModEnd> : ++ YYCURSOR <S2SV_ModStart> ) { goto yy31 <S2SV_ModEnd> ; } if <S2SV_ModStart> if ( yych <= ':' ) goto yy62 ; goto yy18 ; yy33 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy34 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; if ( yych == <S2SV_ModEnd> ';' ) goto <S2SV_ModStart> ';' ) goto yy63 ; goto yy18 ; yy36 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy37 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy37 ; if ( yych <= ':' ) goto yy65 ; goto yy18 ; yy39 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy40 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy40 ; if ( yych <= ':' ) goto yy66 ; goto yy18 ; yy42 : yych = * ++ YYCURSOR ; if ( yych == ';' ) goto yy67 ; goto yy18 ; yy43 : yych = * ++ YYCURSOR ; if ( yych == '.' ) goto yy45 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy46 ; goto yy18 ; yy44 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { <S2SV_ModEnd> if ( yych <S2SV_ModStart> ( yych != '.' ) goto yy18 ; } else { if ( yych <= '9' ) goto yy46 ; if ( yych == 'I' ) goto yy48 ; goto yy18 ; } yy45 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy69 ; goto yy18 ; yy46 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ':' ) { if ( yych <= '.' ) { if ( yych <= '-' ) goto yy18 ; goto yy69 ; } else { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy46 ; goto yy18 ; } } else { if ( yych <= 'E' ) { if ( yych <= ';' ) goto yy71 ; if ( yych <= 'D' ) goto yy18 ; goto yy73 ; } else { if ( yych == 'e' ) goto yy73 ; goto yy18 ; } } yy48 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy74 ; goto yy18 ; yy49 : yych = * ++ YYCURSOR ; if ( yych == 'A' ) goto yy75 ; goto yy18 ; yy50 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy51 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy51 ; if ( yych == ';' ) goto yy76 ; goto yy18 ; yy53 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy54 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy54 ; if ( yych <= ':' ) goto yy78 ; goto yy18 ; yy56 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy57 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy57 ; if ( yych == ';' ) goto yy79 ; goto yy18 ; yy59 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy60 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy60 ; if ( yych <= ':' ) goto yy81 ; goto yy18 ; yy62 : yych = * ++ YYCURSOR ; if ( yych == <S2SV_ModStart> \\'\"\\' ) goto yy82 ; goto yy18 ; yy63 : <S2SV_ModEnd> ++ YYCURSOR ; <S2SV_ModStart> ; # line 580 \"ext/standard/var_unserializer.re\" { zend_long id ; * p = YYCURSOR <S2SV_ModEnd> ; if ( <S2SV_ModStart> return 0 ; id = parse_iv <S2SV_ModEnd> ( start + <S2SV_ModStart> + 2 ) - 1 ; if ( id == - 1 || ( rval_ref = var_access ( var_hash , id ) ) == NULL ) { return 0 ; } if ( Z_ISUNDEF_P ( rval_ref ) || ( Z_ISREF_P ( rval_ref ) && Z_ISUNDEF_P ( Z_REFVAL_P ( rval_ref ) ) ) ) { return 0 ; } if ( Z_ISREF_P ( rval_ref ) ) { ZVAL_COPY ( rval , rval_ref ) ; } else { ZVAL_NEW_REF ( rval_ref , rval_ref ) ; ZVAL_COPY ( rval , rval_ref ) ; } return 1 ; } # line 982 \"ext/standard/var_unserializer.c\" yy65 : yych = * ++ YYCURSOR ; if ( yych == \\'\"\\' ) goto yy84 ; goto yy18 ; yy66 : yych = * ++ YYCURSOR ; if ( yych == '{' ) goto yy86 ; goto yy18 ; yy67 : ++ YYCURSOR ; # line 635 \"ext/standard/var_unserializer.re\" <S2SV_ModEnd> { * p <S2SV_ModStart> * p = YYCURSOR ; ZVAL_BOOL ( rval , parse_iv ( <S2SV_ModStart> start + 2 ) ) ; return 1 <S2SV_ModEnd> ; } # <S2SV_ModStart> } # line 999 \"ext/standard/var_unserializer.c\" yy69 <S2SV_ModEnd> : ++ YYCURSOR <S2SV_ModStart> YYCURSOR ) < 4 <S2SV_ModEnd> ) YYFILL ( <S2SV_ModStart> ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { <S2SV_ModEnd> if ( yych <S2SV_ModStart> '9' ) goto yy69 ; if ( yych <= ':' ) goto yy18 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy73 ; } else { if ( yych == 'e' ) goto yy73 ; goto yy18 ; } } yy71 : <S2SV_ModEnd> ++ YYCURSOR ; <S2SV_ModStart> ; # line 683 \"ext/standard/var_unserializer.re\" { # if SIZEOF_ZEND_LONG == 4 use_double : # endif * p = YYCURSOR ; ZVAL_DOUBLE ( rval , zend_strtod ( ( const char * ) <S2SV_ModEnd> start + 2 <S2SV_ModStart> start + 2 , NULL ) ) ; return 1 <S2SV_ModEnd> ; } # <S2SV_ModStart> } # line 1028 \"ext/standard/var_unserializer.c\" yy73 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { <S2SV_ModEnd> if ( yych <S2SV_ModStart> '+' ) goto yy88 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy88 <S2SV_ModEnd> ; if ( <S2SV_ModStart> '9' ) goto yy89 ; goto yy18 ; } yy74 : yych = * ++ YYCURSOR ; if ( yych == 'F' ) goto yy91 ; goto yy18 ; yy75 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy91 ; goto yy18 ; yy76 : <S2SV_ModEnd> ++ YYCURSOR ; <S2SV_ModStart> ; # line 641 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1076 \"ext/standard/var_unserializer.c\" yy78 : yych = * ++ YYCURSOR ; if ( yych == \\'\"\\' ) goto yy92 ; goto yy18 ; yy79 : <S2SV_ModEnd> ++ YYCURSOR ; <S2SV_ModStart> ; # line 605 \"ext/standard/var_unserializer.re\" { zend_long id ; <S2SV_ModEnd> * p = <S2SV_ModStart> = YYCURSOR ; if ( ! var_hash ) return 0 ; id = <S2SV_ModEnd> parse_iv ( start <S2SV_ModStart> + 2 ) - 1 ; if ( id == - 1 || ( rval_ref = var_access ( var_hash , id ) ) == NULL ) { return 0 ; } if ( rval_ref == rval ) { return 0 ; } if ( Z_ISUNDEF_P ( rval_ref ) || ( Z_ISREF_P ( rval_ref ) && Z_ISUNDEF_P ( Z_REFVAL_P ( rval_ref ) ) ) ) { return 0 ; } ZVAL_COPY ( rval , rval_ref <S2SV_ModStart> } # line 1107 \"ext/standard/var_unserializer.c\" yy81 : yych = * ++ YYCURSOR ; if ( yych == \\'\"\\' ) goto yy94 ; goto yy18 ; yy82 <S2SV_ModEnd> : ++ YYCURSOR <S2SV_ModStart> ; # line 793 \"ext/standard/var_unserializer.re\" { size_t len , len2 , len3 , maxlen ; zend_long elements ; char * str ; zend_string * class_name ; zend_class_entry * ce ; int incomplete_class = 0 ; int custom_object = 0 ; zval user_func ; zval retval ; zval args [ 1 ] <S2SV_ModEnd> ; if ( <S2SV_ModStart> return 0 ; if ( * start == 'C' ) { custom_object = 1 ; } len2 = len = parse_uiv <S2SV_ModEnd> ( start + <S2SV_ModStart> + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len || len == 0 ) { <S2SV_ModEnd> * p = <S2SV_ModStart> * p = <S2SV_ModEnd> start + 2 <S2SV_ModStart> start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ':' ) { * p = YYCURSOR + 1 ; return 0 ; } len3 = strspn ( str , \"0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\\\\177\\\\200\\\\201\\\\202\\\\203\\\\204\\\\205\\\\206\\\\207\\\\210\\\\211\\\\212\\\\213\\\\214\\\\215\\\\216\\\\217\\\\220\\\\221\\\\222\\\\223\\\\224\\\\225\\\\226\\\\227\\\\230\\\\231\\\\232\\\\233\\\\234\\\\235\\\\236\\\\237\\\\240\\\\241\\\\242\\\\243\\\\244\\\\245\\\\246\\\\247\\\\250\\\\251\\\\252\\\\253\\\\254\\\\255\\\\256\\\\257\\\\260\\\\261\\\\262\\\\263\\\\264\\\\265\\\\266\\\\267\\\\270\\\\271\\\\272\\\\273\\\\274\\\\275\\\\276\\\\277\\\\300\\\\301\\\\302\\\\303\\\\304\\\\305\\\\306\\\\307\\\\310\\\\311\\\\312\\\\313\\\\314\\\\315\\\\316\\\\317\\\\320\\\\321\\\\322\\\\323\\\\324\\\\325\\\\326\\\\327\\\\330\\\\331\\\\332\\\\333\\\\334\\\\335\\\\336\\\\337\\\\340\\\\341\\\\342\\\\343\\\\344\\\\345\\\\346\\\\347\\\\350\\\\351\\\\352\\\\353\\\\354\\\\355\\\\356\\\\357\\\\360\\\\361\\\\362\\\\363\\\\364\\\\365\\\\366\\\\367\\\\370\\\\371\\\\372\\\\373\\\\374\\\\375\\\\376\\\\377\\\\\\\\\" ) ; if ( len3 != len ) { * p = YYCURSOR + len3 - len ; return 0 ; } class_name = zend_string_init ( str , len , 0 ) ; do { if ( ! unserialize_allowed_class ( class_name , classes ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } BG ( serialize_lock ) ++ ; ce = zend_lookup_class ( class_name ) ; if ( ce ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; return 0 ; } break ; } BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; return 0 ; } if ( ( PG ( unserialize_callback_func ) == NULL ) || ( PG ( unserialize_callback_func ) [ 0 ] == '\\\\0' ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } ZVAL_STRING ( & user_func , PG ( unserialize_callback_func ) ) ; ZVAL_STR_COPY ( & args [ 0 ] , class_name ) ; BG ( serialize_lock ) ++ ; if ( call_user_function_ex ( CG ( function_table ) , NULL , & user_func , & retval , 1 , args , 0 , NULL ) != SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; return 0 ; } php_error_docref ( NULL , E_WARNING , \"defined<S2SV_blank>(%s)<S2SV_blank>but<S2SV_blank>not<S2SV_blank>found\" , Z_STRVAL ( user_func ) ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; break ; } BG ( serialize_lock ) -- ; zval_ptr_dtor ( & retval ) ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; return 0 ; } BG ( serialize_lock ) ++ ; if ( ( ce = zend_lookup_class ( class_name ) ) == NULL ) { php_error_docref ( NULL , E_WARNING , \"Function<S2SV_blank>%s()<S2SV_blank>hasn\\'t<S2SV_blank>defined<S2SV_blank>the<S2SV_blank>class<S2SV_blank>it<S2SV_blank>was<S2SV_blank>called<S2SV_blank>for\" , Z_STRVAL ( user_func ) ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; } BG ( serialize_lock ) -- ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; break ; } while ( 1 ) ; * p = YYCURSOR ; if ( custom_object ) { int ret ; ret = object_custom ( UNSERIALIZE_PASSTHRU , ce ) ; if ( ret && incomplete_class ) { php_store_class_name ( rval , ZSTR_VAL ( class_name ) , len2 ) ; } zend_string_release ( class_name ) ; return ret ; } elements = object_common1 ( UNSERIALIZE_PASSTHRU , ce ) ; if ( elements < 0 ) { zend_string_release ( class_name ) ; return 0 ; } if ( incomplete_class ) { php_store_class_name ( rval , ZSTR_VAL ( class_name ) , len2 ) ; } zend_string_release ( class_name ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } # line 1266 \"ext/standard/var_unserializer.c\" yy84 : ++ YYCURSOR ; # line 724 \"ext/standard/var_unserializer.re\" { size_t len , maxlen ; zend_string * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } if ( ( str = unserialize_str ( & YYCURSOR , len , maxlen ) ) == NULL ) { return 0 ; } if ( * ( YYCURSOR ) != \\'\"\\' ) { zend_string_free ( str ) ; * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { efree ( str ) ; * p = YYCURSOR + 1 ; <S2SV_ModEnd> return 0 ; <S2SV_ModStart> 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; ZVAL_STR ( rval , str <S2SV_ModEnd> ) ; return <S2SV_ModStart> 1 ; } # line 1303 \"ext/standard/var_unserializer.c\" yy86 : ++ YYCURSOR ; # line 758 \"ext/standard/var_unserializer.re\" { zend_long elements = parse_iv ( start + 2 ) ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; if ( elements < 0 || elements >= HT_MAX_SIZE ) { return 0 ; } array_init_size <S2SV_ModEnd> ( rval , <S2SV_ModStart> ( rval , elements ) ; if ( elements ) { zend_hash_real_init ( Z_ARRVAL_P ( rval ) , 0 ) ; } if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_ARRVAL_P ( rval ) , elements , 0 ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; } # line 1330 \"ext/standard/var_unserializer.c\" yy88 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy96 ; goto yy18 <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { if ( yych <= '-' ) goto yy96 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; } yy89 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy89 ; if ( yych == ';' ) goto yy71 ; goto yy18 ; yy91 : yych = * ++ YYCURSOR ; if ( yych == ';' ) goto yy97 ; goto yy18 ; yy92 : ++ YYCURSOR ; # line 782 \"ext/standard/var_unserializer.re\" { zend_long elements ; if ( ! var_hash ) return 0 ; elements = object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ; if ( elements < 0 || elements >= HT_MAX_SIZE ) { return 0 ; } return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } # line 1366 \"ext/standard/var_unserializer.c\" yy94 : ++ YYCURSOR ; # line 692 \"ext/standard/var_unserializer.re\" { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; ZVAL_STRINGL <S2SV_ModEnd> ( rval , <S2SV_ModStart> ( rval , str , len ) ; <S2SV_ModEnd> return 1 ; <S2SV_ModStart> } # line 1401 \"ext/standard/var_unserializer.c\" yy96 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy89 ; goto yy18 ; yy97 : ++ YYCURSOR ; # line 667 \"ext/standard/var_unserializer.re\" { * p = YYCURSOR ; if ( ! strncmp ( ( char * ) start + 2 , \"NAN\" , 3 ) ) { ZVAL_DOUBLE ( rval , php_get_nan ( ) ) ; } else if ( ! strncmp ( ( char * ) start + 2 , \"INF\" , 3 ) ) { ZVAL_DOUBLE ( rval , php_get_inf ( ) ) ; } else if ( ! strncmp ( ( char * ) start + 2 , \"-INF\" , 4 ) ) { ZVAL_DOUBLE ( rval , - php_get_inf ( ) ) ; } else { ZVAL_NULL ( rval ) ; } return 1 ; } # line 1425 \"ext/standard/var_unserializer.c\" } # line 953 \"ext/standard/var_unserializer.re\" return <S2SV_ModEnd> 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10172\n\n```\nCWE-125 static int read_new_config_info ( WavpackContext * wpc , WavpackMetadata * wpmd ) { int bytecnt = wpmd -> byte_length ; unsigned char * byteptr = wpmd -> data ; wpc -> version_five = 1 ; wpc -> file_format = wpc -> config . qmode = wpc -> channel_layout = 0 ; if ( wpc -> channel_reordering ) { free ( wpc -> channel_reordering ) ; wpc -> channel_reordering = NULL ; } <S2SV_StartBug> if ( bytecnt ) { <S2SV_EndBug> wpc -> file_format = * byteptr ++ ; wpc -> config . qmode = ( wpc -> config . qmode & ~ 0xff ) | * byteptr ++ ; bytecnt -= 2 ; if ( bytecnt ) { int nchans , i ; wpc -> channel_layout = ( int32_t ) * byteptr ++ << 16 ; bytecnt -- ; if ( bytecnt ) { wpc -> channel_layout += nchans = * byteptr ++ ; bytecnt -- ; if ( bytecnt ) { if ( bytecnt > nchans ) return FALSE ; wpc -> channel_reordering = malloc ( nchans ) ; if ( wpc -> channel_reordering ) { for ( i = 0 ; i < nchans ; ++ i ) if ( bytecnt ) { wpc -> channel_reordering [ i ] = * byteptr ++ ; <S2SV_StartBug> bytecnt -- ; <S2SV_EndBug> } else wpc -> channel_reordering [ i ] = i ; } } } else wpc -> channel_layout += wpc -> config . num_channels ; } } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( bytecnt >= 2 <S2SV_ModStart> byteptr ++ ; if ( wpc -> channel_reordering [ i ] >= nchans ) wpc -> channel_reordering [ i ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3182\n\n```\nCWE-119 static void logi_dj_recv_add_djhid_device ( struct dj_receiver_dev * djrcv_dev , struct dj_report * dj_report ) { struct hid_device * djrcv_hdev = djrcv_dev -> hdev ; struct usb_interface * intf = to_usb_interface ( djrcv_hdev -> dev . parent ) ; struct usb_device * usbdev = interface_to_usbdev ( intf ) ; struct hid_device * dj_hiddev ; struct dj_device * dj_dev ; unsigned char tmpstr [ 3 ] ; if ( dj_report -> report_params [ DEVICE_PAIRED_PARAM_SPFUNCTION ] & SPFUNCTION_DEVICE_LIST_EMPTY ) { dbg_hid ( \"%s:<S2SV_blank>device<S2SV_blank>list<S2SV_blank>is<S2SV_blank>empty\\\\n\" , __func__ ) ; djrcv_dev -> querying_devices = false ; return ; } <S2SV_StartBug> if ( ( dj_report -> device_index < DJ_DEVICE_INDEX_MIN ) || <S2SV_EndBug> ( dj_report -> device_index > DJ_DEVICE_INDEX_MAX ) ) { dev_err ( & djrcv_hdev -> dev , \"%s:<S2SV_blank>invalid<S2SV_blank>device<S2SV_blank>index:%d\\\\n\" , __func__ , dj_report -> device_index ) ; return ; } if ( djrcv_dev -> paired_dj_devices [ dj_report -> device_index ] ) { dbg_hid ( \"%s:<S2SV_blank>device<S2SV_blank>is<S2SV_blank>already<S2SV_blank>known\\\\n\" , __func__ ) ; return ; } dj_hiddev = hid_allocate_device ( ) ; if ( IS_ERR ( dj_hiddev ) ) { dev_err ( & djrcv_hdev -> dev , \"%s:<S2SV_blank>hid_allocate_device<S2SV_blank>failed\\\\n\" , __func__ ) ; return ; } dj_hiddev -> ll_driver = & logi_dj_ll_driver ; dj_hiddev -> dev . parent = & djrcv_hdev -> dev ; dj_hiddev -> bus = BUS_USB ; dj_hiddev -> vendor = le16_to_cpu ( usbdev -> descriptor . idVendor ) ; dj_hiddev -> product = le16_to_cpu ( usbdev -> descriptor . idProduct ) ; snprintf ( dj_hiddev -> name , sizeof ( dj_hiddev -> name ) , \"Logitech<S2SV_blank>Unifying<S2SV_blank>Device.<S2SV_blank>Wireless<S2SV_blank>PID:%02x%02x\" , dj_report -> report_params [ DEVICE_PAIRED_PARAM_EQUAD_ID_MSB ] , dj_report -> report_params [ DEVICE_PAIRED_PARAM_EQUAD_ID_LSB ] ) ; usb_make_path ( usbdev , dj_hiddev -> phys , sizeof ( dj_hiddev -> phys ) ) ; snprintf ( tmpstr , sizeof ( tmpstr ) , \":%d\" , dj_report -> device_index ) ; strlcat ( dj_hiddev -> phys , tmpstr , sizeof ( dj_hiddev -> phys ) ) ; dj_dev = kzalloc ( sizeof ( struct dj_device ) , GFP_KERNEL ) ; if ( ! dj_dev ) { dev_err ( & djrcv_hdev -> dev , \"%s:<S2SV_blank>failed<S2SV_blank>allocating<S2SV_blank>dj_device\\\\n\" , __func__ ) ; goto dj_device_allocate_fail ; } dj_dev -> reports_supported = get_unaligned_le32 ( dj_report -> report_params + DEVICE_PAIRED_RF_REPORT_TYPE ) ; dj_dev -> hdev = dj_hiddev ; dj_dev -> dj_receiver_dev = djrcv_dev ; dj_dev -> device_index = dj_report -> device_index ; dj_hiddev -> driver_data = dj_dev ; djrcv_dev -> paired_dj_devices [ dj_report -> device_index ] = dj_dev ; if ( hid_add_device ( dj_hiddev ) ) { dev_err ( & djrcv_hdev -> dev , \"%s:<S2SV_blank>failed<S2SV_blank>adding<S2SV_blank>dj_device\\\\n\" , __func__ ) ; goto hid_add_device_fail ; } return ; hid_add_device_fail : djrcv_dev -> paired_dj_devices [ dj_report -> device_index ] = NULL ; kfree ( dj_dev ) ; dj_device_allocate_fail : hid_destroy_device ( dj_hiddev ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( <S2SV_ModEnd> djrcv_dev -> paired_dj_devices\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int orangefs_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { struct orangefs_inode_s * orangefs_inode = ORANGEFS_I ( inode ) ; int error = 0 ; void * value = NULL ; size_t size = 0 ; const char * name = NULL ; switch ( type ) { case ACL_TYPE_ACCESS : name = XATTR_NAME_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> umode_t mode = inode -> i_mode ; <S2SV_EndBug> <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> if ( error < 0 ) { <S2SV_StartBug> gossip_err ( \"%s:<S2SV_blank>posix_acl_equiv_mode<S2SV_blank>err:<S2SV_blank>%d\\\\n\" , <S2SV_EndBug> __func__ , error ) ; return error ; } if ( inode -> i_mode != mode ) SetModeFlag ( orangefs_inode ) ; inode -> i_mode = mode ; mark_inode_dirty_sync ( inode ) ; <S2SV_StartBug> if ( error == 0 ) <S2SV_EndBug> acl = NULL ; } break ; case ACL_TYPE_DEFAULT : name = XATTR_NAME_POSIX_ACL_DEFAULT ; break ; default : gossip_err ( \"%s:<S2SV_blank>invalid<S2SV_blank>type<S2SV_blank>%d!\\\\n\" , __func__ , type ) ; return - EINVAL ; } gossip_debug ( GOSSIP_ACL_DEBUG , \"%s:<S2SV_blank>inode<S2SV_blank>%pU,<S2SV_blank>key<S2SV_blank>%s<S2SV_blank>type<S2SV_blank>%d\\\\n\" , __func__ , get_khandle_from_ino ( inode ) , name , type ) ; if ( acl ) { size = posix_acl_xattr_size ( acl -> a_count ) ; value = kmalloc ( size , GFP_KERNEL ) ; if ( ! value ) return - ENOMEM ; error = posix_acl_to_xattr ( & init_user_ns , acl , value , size ) ; if ( error < 0 ) goto out ; } gossip_debug ( GOSSIP_ACL_DEBUG , \"%s:<S2SV_blank>name<S2SV_blank>%s,<S2SV_blank>value<S2SV_blank>%p,<S2SV_blank>size<S2SV_blank>%zd,<S2SV_blank>acl<S2SV_blank>%p\\\\n\" , __func__ , name , value , size , acl ) ; error = orangefs_inode_setxattr ( inode , name , value , size , 0 ) ; out : kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { umode_t mode ; error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & mode <S2SV_ModStart> , & mode , & acl ) ; if ( error <S2SV_ModEnd> ) { gossip_err <S2SV_ModStart> { gossip_err ( \"%s:<S2SV_blank>posix_acl_update_mode<S2SV_blank>err:<S2SV_blank>%d\\\\n\" <S2SV_ModEnd> , __func__ , <S2SV_ModStart> inode ) ; <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 void vrrp_print_data ( void ) { <S2SV_StartBug> FILE * file = fopen ( dump_file , \"w\" ) ; <S2SV_EndBug> if ( ! file ) { log_message ( LOG_INFO , \"Can\\'t<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>(%d:<S2SV_blank>%s)\" , dump_file , errno , strerror ( errno ) ) ; return ; } dump_data_vrrp ( file ) ; fclose ( file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * file = fopen_safe <S2SV_ModEnd> ( dump_file ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19497\n\n```\nCWE-125 uint8_t hfs_cat_traverse ( HFS_INFO * hfs , TSK_HFS_BTREE_CB a_cb , void * ptr ) { TSK_FS_INFO * fs = & ( hfs -> fs_info ) ; uint32_t cur_node ; char * node ; uint16_t nodesize ; uint8_t is_done = 0 ; tsk_error_reset ( ) ; nodesize = tsk_getu16 ( fs -> endian , hfs -> catalog_header . nodesize ) ; if ( ( node = ( char * ) tsk_malloc ( nodesize ) ) == NULL ) return 1 ; cur_node = tsk_getu32 ( fs -> endian , hfs -> catalog_header . rootNode ) ; if ( cur_node == 0 ) { if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>\" \"empty<S2SV_blank>extents<S2SV_blank>btree\\\\n\" ) ; free ( node ) ; return 1 ; } if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>starting<S2SV_blank>at<S2SV_blank>\" \"root<S2SV_blank>node<S2SV_blank>%\" PRIu32 \";<S2SV_blank>nodesize<S2SV_blank>=<S2SV_blank>%\" PRIu16 \"\\\\n\" , cur_node , nodesize ) ; is_done = 0 ; while ( is_done == 0 ) { TSK_OFF_T cur_off ; uint16_t num_rec ; ssize_t cnt ; hfs_btree_node * node_desc ; if ( cur_node > tsk_getu32 ( fs -> endian , hfs -> catalog_header . totalNodes ) ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>Node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>for<S2SV_blank>file\" , cur_node ) ; free ( node ) ; return 1 ; } cur_off = cur_node * nodesize ; cnt = tsk_fs_attr_read ( hfs -> catalog_attr , cur_off , node , nodesize , 0 ) ; if ( cnt != nodesize ) { if ( cnt >= 0 ) { tsk_error_reset ( ) ; tsk_error_set_errno ( TSK_ERR_FS_READ ) ; } tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Error<S2SV_blank>reading<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%\" PRIuOFF , cur_node , cur_off ) ; free ( node ) ; return 1 ; } if ( nodesize < sizeof ( hfs_btree_node ) ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>Node<S2SV_blank>size<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>to<S2SV_blank>be<S2SV_blank>valid\" , nodesize ) ; free ( node ) ; return 1 ; } node_desc = ( hfs_btree_node * ) node ; num_rec = tsk_getu16 ( fs -> endian , node_desc -> num_rec ) ; if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>node<S2SV_blank>%\" PRIu32 \"<S2SV_blank>@<S2SV_blank>%\" PRIu64 \"<S2SV_blank>has<S2SV_blank>%\" PRIu16 \"<S2SV_blank>records\\\\n\" , cur_node , cur_off , num_rec ) ; if ( num_rec == 0 ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>zero<S2SV_blank>records<S2SV_blank>in<S2SV_blank>node<S2SV_blank>%\" PRIu32 , cur_node ) ; free ( node ) ; return 1 ; } if ( node_desc -> type == HFS_BT_NODE_TYPE_IDX ) { uint32_t next_node = 0 ; int rec ; for ( rec = 0 ; rec < num_rec ; ++ rec ) { size_t rec_off ; hfs_btree_key_cat * key ; uint8_t retval ; int keylen ; rec_off = tsk_getu16 ( fs -> endian , & node [ nodesize - ( rec + 1 ) * 2 ] ) ; if ( rec_off > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off , nodesize ) ; free ( node ) ; return 1 ; } key = ( hfs_btree_key_cat * ) & node [ rec_off ] ; keylen = 2 + tsk_getu16 ( hfs -> fs_info . endian , key -> key_len ) ; <S2SV_StartBug> if ( ( keylen ) > nodesize ) { <S2SV_EndBug> tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" <S2SV_StartBug> PRIu16 \")\" , rec , cur_node , keylen , nodesize ) ; <S2SV_EndBug> free ( node ) ; return 1 ; } retval = a_cb ( hfs , HFS_BT_NODE_TYPE_IDX , key , cur_off + rec_off , ptr ) ; if ( retval == HFS_BTREE_CB_ERR ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Callback<S2SV_blank>returned<S2SV_blank>error\" ) ; free ( node ) ; return 1 ; } else if ( ( retval == HFS_BTREE_CB_IDX_LT ) || ( next_node == 0 ) ) { hfs_btree_index_record * idx_rec ; int keylen = 2 + hfs_get_idxkeylen ( hfs , tsk_getu16 ( fs -> endian , key -> key_len ) , & ( hfs -> catalog_header ) ) ; if ( rec_off + keylen > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>and<S2SV_blank>keylength<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off + keylen , nodesize ) ; free ( node ) ; return 1 ; } idx_rec = ( hfs_btree_index_record * ) & node [ rec_off + keylen ] ; next_node = tsk_getu32 ( fs -> endian , idx_rec -> childNode ) ; } if ( retval == HFS_BTREE_CB_IDX_EQGT ) { break ; } } if ( next_node == 0 ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>any<S2SV_blank>keys<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d\" , cur_node ) ; is_done = 1 ; break ; } if ( next_node == cur_node ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>references<S2SV_blank>itself<S2SV_blank>as<S2SV_blank>next<S2SV_blank>node\" , cur_node ) ; is_done = 1 ; break ; } cur_node = next_node ; } else if ( node_desc -> type == HFS_BT_NODE_TYPE_LEAF ) { int rec ; for ( rec = 0 ; rec < num_rec ; ++ rec ) { size_t rec_off ; hfs_btree_key_cat * key ; uint8_t retval ; int keylen ; rec_off = tsk_getu16 ( fs -> endian , & node [ nodesize - ( rec + 1 ) * 2 ] ) ; if ( rec_off > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>leaf<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off , nodesize ) ; free ( node ) ; return 1 ; } key = ( hfs_btree_key_cat * ) & node [ rec_off ] ; keylen = 2 + tsk_getu16 ( hfs -> fs_info . endian , key -> key_len ) ; if ( ( keylen ) > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>leaf<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , keylen , nodesize ) ; free ( node ) ; return 1 ; } retval = a_cb ( hfs , HFS_BT_NODE_TYPE_LEAF , key , cur_off + rec_off , ptr ) ; if ( retval == HFS_BTREE_CB_LEAF_STOP ) { is_done = 1 ; break ; } else if ( retval == HFS_BTREE_CB_ERR ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Callback<S2SV_blank>returned<S2SV_blank>error\" ) ; free ( node ) ; return 1 ; } } if ( is_done == 0 ) { cur_node = tsk_getu32 ( fs -> endian , node_desc -> flink ) ; if ( cur_node == 0 ) { is_done = 1 ; } if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>moving<S2SV_blank>forward<S2SV_blank>to<S2SV_blank>next<S2SV_blank>leaf\" ) ; } } else { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>btree<S2SV_blank>node<S2SV_blank>%\" PRIu32 \"<S2SV_blank>(%\" PRIu64 \")<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>index<S2SV_blank>nor<S2SV_blank>leaf<S2SV_blank>(%\" PRIu8 \")\" , cur_node , cur_off , node_desc -> type ) ; free ( node ) ; return 1 ; } } free ( node ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( keylen >= nodesize - rec_off <S2SV_ModEnd> ) { tsk_error_set_errno <S2SV_ModStart> , keylen , ( nodesize - rec_off ) <S2SV_ModEnd> ) ; free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4270\n\n```\nCWE-20 static int net_ctl_permissions ( struct ctl_table_header * head , struct ctl_table * table ) { struct net * net = container_of ( head -> set , struct net , sysctls ) ; kuid_t root_uid = make_kuid ( net -> user_ns , 0 ) ; kgid_t root_gid = make_kgid ( net -> user_ns , 0 ) ; if ( ns_capable ( net -> user_ns , CAP_NET_ADMIN ) || <S2SV_StartBug> uid_eq ( root_uid , current_uid ( ) ) ) { <S2SV_EndBug> int mode = ( table -> mode >> 6 ) & 7 ; return ( mode << 6 ) | ( mode << 3 ) | mode ; } <S2SV_StartBug> if ( gid_eq ( root_gid , current_gid ( ) ) ) { <S2SV_EndBug> int mode = ( table -> mode >> 3 ) & 7 ; return ( mode << 3 ) | mode ; } return table -> mode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( root_uid , current_euid <S2SV_ModEnd> ( ) ) <S2SV_ModStart> } if ( in_egroup_p ( root_gid <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12232\n\n```\nCWE-362 void sock_release ( struct socket * sock ) { <S2SV_StartBug> if ( sock -> ops ) { <S2SV_EndBug> struct module * owner = sock -> ops -> owner ; sock -> ops -> release ( sock ) ; sock -> ops = NULL ; module_put ( owner ) ; } <S2SV_StartBug> if ( rcu_dereference_protected ( sock -> wq , 1 ) -> fasync_list ) <S2SV_EndBug> pr_err ( \"%s:<S2SV_blank>fasync<S2SV_blank>list<S2SV_blank>not<S2SV_blank>empty!\\\\n\" , __func__ ) ; if ( ! sock -> file ) { iput ( SOCK_INODE ( sock ) ) ; return ; } sock -> file = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock ) { __sock_release ( sock , NULL <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18270\n\n```\nCWE-000 struct key * key_alloc ( struct key_type * type , const char * desc , kuid_t uid , kgid_t gid , const struct cred * cred , key_perm_t perm , unsigned long flags , struct key_restriction * restrict_link ) { struct key_user * user = NULL ; struct key * key ; size_t desclen , quotalen ; int ret ; key = ERR_PTR ( - EINVAL ) ; if ( ! desc || ! * desc ) goto error ; if ( type -> vet_description ) { ret = type -> vet_description ( desc ) ; if ( ret < 0 ) { key = ERR_PTR ( ret ) ; goto error ; } } desclen = strlen ( desc ) ; quotalen = desclen + 1 + type -> def_datalen ; user = key_user_lookup ( uid ) ; if ( ! user ) goto no_memory_1 ; if ( ! ( flags & KEY_ALLOC_NOT_IN_QUOTA ) ) { unsigned maxkeys = uid_eq ( uid , GLOBAL_ROOT_UID ) ? key_quota_root_maxkeys : key_quota_maxkeys ; unsigned maxbytes = uid_eq ( uid , GLOBAL_ROOT_UID ) ? key_quota_root_maxbytes : key_quota_maxbytes ; spin_lock ( & user -> lock ) ; if ( ! ( flags & KEY_ALLOC_QUOTA_OVERRUN ) ) { if ( user -> qnkeys + 1 >= maxkeys || user -> qnbytes + quotalen >= maxbytes || user -> qnbytes + quotalen < user -> qnbytes ) goto no_quota ; } user -> qnkeys ++ ; user -> qnbytes += quotalen ; spin_unlock ( & user -> lock ) ; } key = kmem_cache_zalloc ( key_jar , GFP_KERNEL ) ; if ( ! key ) goto no_memory_2 ; key -> index_key . desc_len = desclen ; key -> index_key . description = kmemdup ( desc , desclen + 1 , GFP_KERNEL ) ; if ( ! key -> index_key . description ) goto no_memory_3 ; refcount_set ( & key -> usage , 1 ) ; init_rwsem ( & key -> sem ) ; lockdep_set_class ( & key -> sem , & type -> lock_class ) ; key -> index_key . type = type ; key -> user = user ; key -> quotalen = quotalen ; key -> datalen = type -> def_datalen ; key -> uid = uid ; key -> gid = gid ; key -> perm = perm ; key -> restrict_link = restrict_link ; if ( ! ( flags & KEY_ALLOC_NOT_IN_QUOTA ) ) key -> flags |= 1 << KEY_FLAG_IN_QUOTA ; if ( flags & KEY_ALLOC_BUILT_IN ) key -> flags |= 1 << KEY_FLAG_BUILTIN ; <S2SV_StartBug> # ifdef KEY_DEBUGGING <S2SV_EndBug> key -> magic = KEY_DEBUG_MAGIC ; # endif ret = security_key_alloc ( key , cred , flags ) ; if ( ret < 0 ) goto security_error ; atomic_inc ( & user -> nkeys ) ; key_alloc_serial ( key ) ; error : return key ; security_error : kfree ( key -> description ) ; kmem_cache_free ( key_jar , key ) ; if ( ! ( flags & KEY_ALLOC_NOT_IN_QUOTA ) ) { spin_lock ( & user -> lock ) ; user -> qnkeys -- ; user -> qnbytes -= quotalen ; spin_unlock ( & user -> lock ) ; } key_user_put ( user ) ; key = ERR_PTR ( ret ) ; goto error ; no_memory_3 : kmem_cache_free ( key_jar , key ) ; no_memory_2 : if ( ! ( flags & KEY_ALLOC_NOT_IN_QUOTA ) ) { spin_lock ( & user -> lock ) ; user -> qnkeys -- ; user -> qnbytes -= quotalen ; spin_unlock ( & user -> lock ) ; } key_user_put ( user ) ; no_memory_1 : key = ERR_PTR ( - ENOMEM ) ; goto error ; no_quota : spin_unlock ( & user -> lock ) ; key_user_put ( user ) ; key = ERR_PTR ( - EDQUOT ) ; goto error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> << KEY_FLAG_BUILTIN ; if ( flags & KEY_ALLOC_UID_KEYRING ) key -> flags |= 1 << KEY_FLAG_UID_KEYRING ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int64_t vp9_rd_pick_inter_mode_sub8x8 ( VP9_COMP * cpi , MACROBLOCK * x , <S2SV_EndBug> <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> int mi_row , int mi_col , <S2SV_StartBug> int * returnrate , <S2SV_EndBug> int64_t * returndistortion , BLOCK_SIZE bsize , PICK_MODE_CONTEXT * ctx , int64_t best_rd_so_far ) { <S2SV_StartBug> VP9_COMMON * cm = & cpi -> common ; <S2SV_EndBug> <S2SV_StartBug> MACROBLOCKD * xd = & x -> e_mbd ; <S2SV_EndBug> <S2SV_StartBug> MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> <S2SV_StartBug> const struct segmentation * seg = & cm -> seg ; <S2SV_EndBug> MV_REFERENCE_FRAME ref_frame , second_ref_frame ; unsigned char segment_id = mbmi -> segment_id ; int comp_pred , i ; int_mv frame_mv [ MB_MODE_COUNT ] [ MAX_REF_FRAMES ] ; struct buf_2d yv12_mb [ 4 ] [ MAX_MB_PLANE ] ; static const int flag_list [ 4 ] = { 0 , VP9_LAST_FLAG , VP9_GOLD_FLAG , VP9_ALT_FLAG } ; int64_t best_rd = best_rd_so_far ; int64_t best_yrd = best_rd_so_far ; <S2SV_StartBug> int64_t best_tx_rd [ TX_MODES ] ; <S2SV_EndBug> int64_t best_tx_diff [ TX_MODES ] ; int64_t best_pred_diff [ REFERENCE_MODES ] ; int64_t best_pred_rd [ REFERENCE_MODES ] ; int64_t best_filter_rd [ SWITCHABLE_FILTER_CONTEXTS ] ; int64_t best_filter_diff [ SWITCHABLE_FILTER_CONTEXTS ] ; <S2SV_StartBug> MB_MODE_INFO best_mbmode = { 0 } ; <S2SV_EndBug> int mode_index , best_mode_index = 0 ; unsigned int ref_costs_single [ MAX_REF_FRAMES ] , ref_costs_comp [ MAX_REF_FRAMES ] ; <S2SV_StartBug> vp9_prob comp_mode_p ; <S2SV_EndBug> int64_t best_inter_rd = INT64_MAX ; MV_REFERENCE_FRAME best_inter_ref_frame = LAST_FRAME ; INTERP_FILTER tmp_best_filter = SWITCHABLE ; <S2SV_StartBug> int rate_uv_intra [ TX_SIZES ] , rate_uv_tokenonly [ TX_SIZES ] ; <S2SV_EndBug> <S2SV_StartBug> int64_t dist_uv [ TX_SIZES ] ; <S2SV_EndBug> <S2SV_StartBug> int skip_uv [ TX_SIZES ] ; <S2SV_EndBug> MB_PREDICTION_MODE mode_uv [ TX_SIZES ] = { 0 } ; <S2SV_StartBug> int intra_cost_penalty = 20 * vp9_dc_quant ( cm -> base_qindex , cm -> y_dc_delta_q ) ; <S2SV_EndBug> int_mv seg_mvs [ 4 ] [ MAX_REF_FRAMES ] ; b_mode_info best_bmodes [ 4 ] ; int best_skip2 = 0 ; <S2SV_StartBug> int ref_frame_mask = 0 ; <S2SV_EndBug> int mode_skip_mask = 0 ; <S2SV_StartBug> x -> skip_encode = cpi -> sf . skip_encode_frame && x -> q_index < QIDX_SKIP_THRESH ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( x -> zcoeff_blk [ TX_4X4 ] , 0 , 4 ) ; <S2SV_EndBug> for ( i = 0 ; i < 4 ; i ++ ) { int j ; for ( j = 0 ; j < MAX_REF_FRAMES ; j ++ ) seg_mvs [ i ] [ j ] . as_int = INVALID_MV ; } <S2SV_StartBug> estimate_ref_frame_costs ( cpi , segment_id , ref_costs_single , ref_costs_comp , <S2SV_EndBug> & comp_mode_p ) ; for ( i = 0 ; i < REFERENCE_MODES ; ++ i ) best_pred_rd [ i ] = INT64_MAX ; <S2SV_StartBug> for ( i = 0 ; i < TX_MODES ; i ++ ) <S2SV_EndBug> <S2SV_StartBug> best_tx_rd [ i ] = INT64_MAX ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) <S2SV_EndBug> best_filter_rd [ i ] = INT64_MAX ; for ( i = 0 ; i < TX_SIZES ; i ++ ) rate_uv_intra [ i ] = INT_MAX ; <S2SV_StartBug> * returnrate = INT_MAX ; <S2SV_EndBug> for ( ref_frame = LAST_FRAME ; ref_frame <= ALTREF_FRAME ; ref_frame ++ ) { if ( cpi -> ref_frame_flags & flag_list [ ref_frame ] ) { <S2SV_StartBug> vp9_setup_buffer_inter ( cpi , x , tile , <S2SV_EndBug> ref_frame , bsize , mi_row , mi_col , frame_mv [ NEARESTMV ] , frame_mv [ NEARMV ] , yv12_mb ) ; } <S2SV_StartBug> frame_mv [ NEWMV ] [ ref_frame ] . as_int = INVALID_MV ; <S2SV_EndBug> frame_mv [ ZEROMV ] [ ref_frame ] . as_int = 0 ; } for ( ref_frame = LAST_FRAME ; ref_frame <= ALTREF_FRAME && cpi -> sf . reference_masking ; ++ ref_frame ) { int i ; for ( i = LAST_FRAME ; i <= ALTREF_FRAME ; ++ i ) { if ( ( x -> pred_mv_sad [ ref_frame ] >> 1 ) > x -> pred_mv_sad [ i ] ) { ref_frame_mask |= ( 1 << ref_frame ) ; <S2SV_StartBug> break ; <S2SV_EndBug> } } } <S2SV_StartBug> for ( mode_index = 0 ; mode_index < MAX_REFS ; ++ mode_index ) { <S2SV_EndBug> int mode_excluded = 0 ; int64_t this_rd = INT64_MAX ; int disable_skip = 0 ; int compmode_cost = 0 ; int rate2 = 0 , rate_y = 0 , rate_uv = 0 ; int64_t distortion2 = 0 , distortion_y = 0 , distortion_uv = 0 ; int skippable = 0 ; <S2SV_StartBug> int64_t tx_cache [ TX_MODES ] ; <S2SV_EndBug> int i ; int this_skip2 = 0 ; int64_t total_sse = INT_MAX ; int early_term = 0 ; <S2SV_StartBug> for ( i = 0 ; i < TX_MODES ; ++ i ) <S2SV_EndBug> tx_cache [ i ] = INT64_MAX ; x -> skip = 0 ; <S2SV_StartBug> ref_frame = vp9_ref_order [ mode_index ] . ref_frame [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> second_ref_frame = vp9_ref_order [ mode_index ] . ref_frame [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> if ( mode_index > 2 && cpi -> sf . mode_skip_start < MAX_MODES ) { <S2SV_EndBug> <S2SV_StartBug> if ( mode_index == 3 ) { <S2SV_EndBug> <S2SV_StartBug> switch ( vp9_ref_order [ best_mode_index ] . ref_frame [ 0 ] ) { <S2SV_EndBug> case INTRA_FRAME : <S2SV_StartBug> mode_skip_mask = 0 ; <S2SV_EndBug> break ; case LAST_FRAME : <S2SV_StartBug> mode_skip_mask = 0x0010 ; <S2SV_EndBug> break ; case GOLDEN_FRAME : <S2SV_StartBug> mode_skip_mask = 0x0008 ; <S2SV_EndBug> break ; case ALTREF_FRAME : <S2SV_StartBug> mode_skip_mask = 0x0000 ; <S2SV_EndBug> break ; case NONE : case MAX_REF_FRAMES : assert ( 0 && \"Invalid<S2SV_blank>Reference<S2SV_blank>frame\" ) ; <S2SV_StartBug> } <S2SV_EndBug> } <S2SV_StartBug> if ( mode_skip_mask & ( 1 << mode_index ) ) <S2SV_EndBug> continue ; <S2SV_StartBug> } <S2SV_EndBug> if ( ( best_rd < <S2SV_StartBug> ( ( int64_t ) cpi -> rd_thresh_sub8x8 [ segment_id ] [ bsize ] [ mode_index ] * <S2SV_EndBug> <S2SV_StartBug> cpi -> rd_thresh_freq_sub8x8 [ bsize ] [ mode_index ] >> 5 ) ) || <S2SV_EndBug> cpi -> rd_thresh_sub8x8 [ segment_id ] [ bsize ] [ mode_index ] == INT_MAX ) continue ; <S2SV_StartBug> if ( ( second_ref_frame > INTRA_FRAME ) && <S2SV_EndBug> vp9_segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) ) continue ; <S2SV_StartBug> mbmi -> ref_frame [ 0 ] = ref_frame ; <S2SV_EndBug> mbmi -> ref_frame [ 1 ] = second_ref_frame ; if ( ! ( ref_frame == INTRA_FRAME || ( cpi -> ref_frame_flags & flag_list [ ref_frame ] ) ) ) { continue ; } if ( ! ( second_ref_frame == NONE || ( cpi -> ref_frame_flags & flag_list [ second_ref_frame ] ) ) ) { continue ; } <S2SV_StartBug> comp_pred = second_ref_frame > INTRA_FRAME ; <S2SV_EndBug> if ( comp_pred ) { if ( cpi -> sf . mode_search_skip_flags & FLAG_SKIP_COMP_BESTINTRA ) if ( vp9_ref_order [ best_mode_index ] . ref_frame [ 0 ] == INTRA_FRAME ) continue ; if ( cpi -> sf . mode_search_skip_flags & FLAG_SKIP_COMP_REFMISMATCH ) if ( ref_frame != best_inter_ref_frame && second_ref_frame != best_inter_ref_frame ) continue ; } if ( ref_frame > 0 && vp9_is_scaled ( & cm -> frame_refs [ ref_frame - 1 ] . sf ) ) continue ; if ( second_ref_frame > 0 && vp9_is_scaled ( & cm -> frame_refs [ second_ref_frame - 1 ] . sf ) ) continue ; <S2SV_StartBug> set_ref_ptrs ( cm , xd , ref_frame , second_ref_frame ) ; <S2SV_EndBug> mbmi -> uv_mode = DC_PRED ; mbmi -> interp_filter = cm -> interp_filter == SWITCHABLE ? EIGHTTAP : cm -> interp_filter ; <S2SV_StartBug> if ( comp_pred ) { <S2SV_EndBug> if ( ! ( cpi -> ref_frame_flags & flag_list [ second_ref_frame ] ) ) continue ; mode_excluded = mode_excluded ? mode_excluded : cm -> reference_mode == SINGLE_REFERENCE ; } else { if ( ref_frame != INTRA_FRAME && second_ref_frame != INTRA_FRAME ) { mode_excluded = mode_excluded ? mode_excluded : cm -> reference_mode == COMPOUND_REFERENCE ; } } for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) { xd -> plane [ i ] . pre [ 0 ] = yv12_mb [ ref_frame ] [ i ] ; if ( comp_pred ) xd -> plane [ i ] . pre [ 1 ] = yv12_mb [ second_ref_frame ] [ i ] ; } <S2SV_StartBug> if ( vp9_segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) && <S2SV_EndBug> vp9_get_segdata ( seg , segment_id , SEG_LVL_REF_FRAME ) != ( int ) ref_frame ) { continue ; } else if ( vp9_segfeature_active ( seg , segment_id , SEG_LVL_SKIP ) && ref_frame != INTRA_FRAME ) { continue ; } else if ( ! vp9_segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) ) { if ( cpi -> rc . is_src_frame_alt_ref && ( cpi -> oxcf . arnr_max_frames == 0 ) ) continue ; } # ifdef MODE_TEST_HIT_STATS cpi -> mode_test_hits [ bsize ] ++ ; # endif if ( ref_frame == INTRA_FRAME ) { int rate ; <S2SV_StartBug> mbmi -> tx_size = TX_4X4 ; <S2SV_EndBug> if ( rd_pick_intra_sub_8x8_y_mode ( cpi , x , & rate , & rate_y , & distortion_y , best_rd ) >= best_rd ) continue ; rate2 += rate ; rate2 += intra_cost_penalty ; distortion2 += distortion_y ; <S2SV_StartBug> if ( rate_uv_intra [ TX_4X4 ] == INT_MAX ) { <S2SV_EndBug> <S2SV_StartBug> choose_intra_uv_mode ( cpi , ctx , bsize , TX_4X4 , <S2SV_EndBug> <S2SV_StartBug> & rate_uv_intra [ TX_4X4 ] , <S2SV_EndBug> <S2SV_StartBug> & rate_uv_tokenonly [ TX_4X4 ] , <S2SV_EndBug> <S2SV_StartBug> & dist_uv [ TX_4X4 ] , & skip_uv [ TX_4X4 ] , <S2SV_EndBug> <S2SV_StartBug> & mode_uv [ TX_4X4 ] ) ; <S2SV_EndBug> } <S2SV_StartBug> rate2 += rate_uv_intra [ TX_4X4 ] ; <S2SV_EndBug> <S2SV_StartBug> rate_uv = rate_uv_tokenonly [ TX_4X4 ] ; <S2SV_EndBug> <S2SV_StartBug> distortion2 += dist_uv [ TX_4X4 ] ; <S2SV_EndBug> <S2SV_StartBug> distortion_uv = dist_uv [ TX_4X4 ] ; <S2SV_EndBug> <S2SV_StartBug> mbmi -> uv_mode = mode_uv [ TX_4X4 ] ; <S2SV_EndBug> tx_cache [ ONLY_4X4 ] = RDCOST ( x -> rdmult , x -> rddiv , rate2 , distortion2 ) ; for ( i = 0 ; i < TX_MODES ; ++ i ) tx_cache [ i ] = tx_cache [ ONLY_4X4 ] ; } else { int rate ; int64_t distortion ; int64_t this_rd_thresh ; int64_t tmp_rd , tmp_best_rd = INT64_MAX , tmp_best_rdu = INT64_MAX ; int tmp_best_rate = INT_MAX , tmp_best_ratey = INT_MAX ; int64_t tmp_best_distortion = INT_MAX , tmp_best_sse , uv_sse ; int tmp_best_skippable = 0 ; int switchable_filter_index ; int_mv * second_ref = comp_pred ? <S2SV_StartBug> & mbmi -> ref_mvs [ second_ref_frame ] [ 0 ] : NULL ; <S2SV_EndBug> b_mode_info tmp_best_bmodes [ 16 ] ; MB_MODE_INFO tmp_best_mbmode ; BEST_SEG_INFO bsi [ SWITCHABLE_FILTERS ] ; int pred_exists = 0 ; int uv_skippable ; this_rd_thresh = ( ref_frame == LAST_FRAME ) ? <S2SV_StartBug> cpi -> rd_thresh_sub8x8 [ segment_id ] [ bsize ] [ THR_LAST ] : <S2SV_EndBug> <S2SV_StartBug> cpi -> rd_thresh_sub8x8 [ segment_id ] [ bsize ] [ THR_ALTR ] ; <S2SV_EndBug> this_rd_thresh = ( ref_frame == GOLDEN_FRAME ) ? <S2SV_StartBug> cpi -> rd_thresh_sub8x8 [ segment_id ] [ bsize ] [ THR_GOLD ] : this_rd_thresh ; <S2SV_EndBug> <S2SV_StartBug> xd -> mi [ 0 ] -> mbmi . tx_size = TX_4X4 ; <S2SV_EndBug> cpi -> mask_filter_rd = 0 ; for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; ++ i ) <S2SV_StartBug> cpi -> rd_filter_cache [ i ] = INT64_MAX ; <S2SV_EndBug> if ( cm -> interp_filter != BILINEAR ) { tmp_best_filter = EIGHTTAP ; if ( x -> source_variance < <S2SV_StartBug> cpi -> sf . disable_filter_search_var_thresh ) { <S2SV_EndBug> tmp_best_filter = EIGHTTAP ; <S2SV_StartBug> } else if ( cpi -> sf . adaptive_pred_interp_filter == 1 && <S2SV_EndBug> ctx -> pred_interp_filter < SWITCHABLE ) { tmp_best_filter = ctx -> pred_interp_filter ; <S2SV_StartBug> } else if ( cpi -> sf . adaptive_pred_interp_filter == 2 ) { <S2SV_EndBug> tmp_best_filter = ctx -> pred_interp_filter < SWITCHABLE ? ctx -> pred_interp_filter : 0 ; } else { for ( switchable_filter_index = 0 ; switchable_filter_index < SWITCHABLE_FILTERS ; ++ switchable_filter_index ) { int newbest , rs ; int64_t rs_rd ; <S2SV_StartBug> mbmi -> interp_filter = switchable_filter_index ; <S2SV_EndBug> <S2SV_StartBug> tmp_rd = rd_pick_best_mbsegmentation ( cpi , x , tile , <S2SV_EndBug> & mbmi -> ref_mvs [ ref_frame ] [ 0 ] , second_ref , best_yrd , & rate , & rate_y , & distortion , & skippable , & total_sse , ( int ) this_rd_thresh , seg_mvs , bsi , switchable_filter_index , mi_row , mi_col ) ; if ( tmp_rd == INT64_MAX ) continue ; <S2SV_StartBug> rs = vp9_get_switchable_rate ( x ) ; <S2SV_EndBug> rs_rd = RDCOST ( x -> rdmult , x -> rddiv , rs , 0 ) ; <S2SV_StartBug> cpi -> rd_filter_cache [ switchable_filter_index ] = tmp_rd ; <S2SV_EndBug> <S2SV_StartBug> cpi -> rd_filter_cache [ SWITCHABLE_FILTERS ] = <S2SV_EndBug> <S2SV_StartBug> MIN ( cpi -> rd_filter_cache [ SWITCHABLE_FILTERS ] , <S2SV_EndBug> tmp_rd + rs_rd ) ; if ( cm -> interp_filter == SWITCHABLE ) tmp_rd += rs_rd ; <S2SV_StartBug> cpi -> mask_filter_rd = MAX ( cpi -> mask_filter_rd , tmp_rd ) ; <S2SV_EndBug> newbest = ( tmp_rd < tmp_best_rd ) ; if ( newbest ) { tmp_best_filter = mbmi -> interp_filter ; tmp_best_rd = tmp_rd ; } if ( ( newbest && cm -> interp_filter == SWITCHABLE ) || ( mbmi -> interp_filter == cm -> interp_filter && cm -> interp_filter != SWITCHABLE ) ) { tmp_best_rdu = tmp_rd ; tmp_best_rate = rate ; tmp_best_ratey = rate_y ; tmp_best_distortion = distortion ; tmp_best_sse = total_sse ; tmp_best_skippable = skippable ; tmp_best_mbmode = * mbmi ; for ( i = 0 ; i < 4 ; i ++ ) { tmp_best_bmodes [ i ] = xd -> mi [ 0 ] -> bmi [ i ] ; x -> zcoeff_blk [ TX_4X4 ] [ i ] = ! x -> plane [ 0 ] . eobs [ i ] ; } pred_exists = 1 ; if ( switchable_filter_index == 0 && <S2SV_StartBug> cpi -> sf . use_rd_breakout && <S2SV_EndBug> best_rd < INT64_MAX ) { if ( tmp_best_rdu / 2 > best_rd ) { tmp_best_filter = mbmi -> interp_filter ; tmp_best_rdu = INT64_MAX ; break ; } } } } } } if ( tmp_best_rdu == INT64_MAX && pred_exists ) continue ; mbmi -> interp_filter = ( cm -> interp_filter == SWITCHABLE ? tmp_best_filter : cm -> interp_filter ) ; if ( ! pred_exists ) { <S2SV_StartBug> tmp_rd = rd_pick_best_mbsegmentation ( cpi , x , tile , <S2SV_EndBug> & mbmi -> ref_mvs [ ref_frame ] [ 0 ] , second_ref , best_yrd , & rate , & rate_y , & distortion , & skippable , & total_sse , ( int ) this_rd_thresh , seg_mvs , bsi , 0 , mi_row , mi_col ) ; if ( tmp_rd == INT64_MAX ) continue ; } else { total_sse = tmp_best_sse ; rate = tmp_best_rate ; rate_y = tmp_best_ratey ; distortion = tmp_best_distortion ; skippable = tmp_best_skippable ; * mbmi = tmp_best_mbmode ; for ( i = 0 ; i < 4 ; i ++ ) xd -> mi [ 0 ] -> bmi [ i ] = tmp_best_bmodes [ i ] ; } rate2 += rate ; distortion2 += distortion ; if ( cm -> interp_filter == SWITCHABLE ) <S2SV_StartBug> rate2 += vp9_get_switchable_rate ( x ) ; <S2SV_EndBug> if ( ! mode_excluded ) mode_excluded = comp_pred ? cm -> reference_mode == SINGLE_REFERENCE : cm -> reference_mode == COMPOUND_REFERENCE ; compmode_cost = vp9_cost_bit ( comp_mode_p , comp_pred ) ; tmp_best_rdu = best_rd - MIN ( RDCOST ( x -> rdmult , x -> rddiv , rate2 , distortion2 ) , RDCOST ( x -> rdmult , x -> rddiv , 0 , total_sse ) ) ; if ( tmp_best_rdu > 0 ) { vp9_build_inter_predictors_sbuv ( & x -> e_mbd , mi_row , mi_col , BLOCK_8X8 ) ; <S2SV_StartBug> super_block_uvrd ( cpi , x , & rate_uv , & distortion_uv , & uv_skippable , <S2SV_EndBug> <S2SV_StartBug> & uv_sse , BLOCK_8X8 , tmp_best_rdu ) ; <S2SV_EndBug> if ( rate_uv == INT_MAX ) continue ; rate2 += rate_uv ; distortion2 += distortion_uv ; skippable = skippable && uv_skippable ; total_sse += uv_sse ; <S2SV_StartBug> tx_cache [ ONLY_4X4 ] = RDCOST ( x -> rdmult , x -> rddiv , rate2 , distortion2 ) ; <S2SV_EndBug> for ( i = 0 ; i < TX_MODES ; ++ i ) tx_cache [ i ] = tx_cache [ ONLY_4X4 ] ; } } if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) rate2 += compmode_cost ; if ( second_ref_frame > INTRA_FRAME ) { rate2 += ref_costs_comp [ ref_frame ] ; } else { rate2 += ref_costs_single [ ref_frame ] ; } if ( ! disable_skip ) { <S2SV_StartBug> const int mb_skip_allowed = ! vp9_segfeature_active ( seg , segment_id , <S2SV_EndBug> SEG_LVL_SKIP ) ; if ( mb_skip_allowed && ref_frame != INTRA_FRAME && ! xd -> lossless ) { if ( RDCOST ( x -> rdmult , x -> rddiv , rate_y + rate_uv , distortion2 ) < RDCOST ( x -> rdmult , x -> rddiv , 0 , total_sse ) ) { rate2 += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 0 ) ; } else { rate2 += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 1 ) ; distortion2 = total_sse ; assert ( total_sse >= 0 ) ; rate2 -= ( rate_y + rate_uv ) ; rate_y = 0 ; rate_uv = 0 ; this_skip2 = 1 ; } <S2SV_StartBug> } else if ( mb_skip_allowed ) { <S2SV_EndBug> rate2 += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 0 ) ; } <S2SV_StartBug> this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate2 , distortion2 ) ; <S2SV_EndBug> } if ( is_inter_block ( & xd -> mi [ 0 ] -> mbmi ) && ! has_second_ref ( & xd -> mi [ 0 ] -> mbmi ) && ! mode_excluded && this_rd < best_inter_rd ) { best_inter_rd = this_rd ; best_inter_ref_frame = ref_frame ; } if ( ! disable_skip && ref_frame == INTRA_FRAME ) { for ( i = 0 ; i < REFERENCE_MODES ; ++ i ) best_pred_rd [ i ] = MIN ( best_pred_rd [ i ] , this_rd ) ; for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) best_filter_rd [ i ] = MIN ( best_filter_rd [ i ] , this_rd ) ; } if ( this_rd < best_rd || x -> skip ) { if ( ! mode_excluded ) { int max_plane = MAX_MB_PLANE ; <S2SV_StartBug> best_mode_index = mode_index ; <S2SV_EndBug> if ( ref_frame == INTRA_FRAME ) { mbmi -> mv [ 0 ] . as_int = 0 ; max_plane = 1 ; } <S2SV_StartBug> * returnrate = rate2 ; <S2SV_EndBug> <S2SV_StartBug> * returndistortion = distortion2 ; <S2SV_EndBug> best_rd = this_rd ; best_yrd = best_rd - RDCOST ( x -> rdmult , x -> rddiv , rate_uv , distortion_uv ) ; best_mbmode = * mbmi ; best_skip2 = this_skip2 ; <S2SV_StartBug> if ( ! x -> select_txfm_size ) <S2SV_EndBug> <S2SV_StartBug> swap_block_ptr ( x , ctx , max_plane ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( ctx -> zcoeff_blk , x -> zcoeff_blk [ mbmi -> tx_size ] , <S2SV_EndBug> <S2SV_StartBug> sizeof ( uint8_t ) * ctx -> num_4x4_blk ) ; <S2SV_EndBug> for ( i = 0 ; i < 4 ; i ++ ) best_bmodes [ i ] = xd -> mi [ 0 ] -> bmi [ i ] ; <S2SV_StartBug> if ( ( cpi -> sf . mode_search_skip_flags & FLAG_EARLY_TERMINATE ) && <S2SV_EndBug> <S2SV_StartBug> ( mode_index > MIN_EARLY_TERM_INDEX ) ) { <S2SV_EndBug> <S2SV_StartBug> const int qstep = xd -> plane [ 0 ] . dequant [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> int scale = 4 ; <S2SV_EndBug> if ( x -> source_variance < UINT_MAX ) { const int var_adjust = ( x -> source_variance < 16 ) ; scale -= var_adjust ; } if ( ref_frame > INTRA_FRAME && distortion2 * scale < qstep * qstep ) { early_term = 1 ; } } } } if ( ! disable_skip && ref_frame != INTRA_FRAME ) { int64_t single_rd , hybrid_rd , single_rate , hybrid_rate ; if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) { single_rate = rate2 - compmode_cost ; hybrid_rate = rate2 ; } else { single_rate = rate2 ; hybrid_rate = rate2 + compmode_cost ; } single_rd = RDCOST ( x -> rdmult , x -> rddiv , single_rate , distortion2 ) ; hybrid_rd = RDCOST ( x -> rdmult , x -> rddiv , hybrid_rate , distortion2 ) ; <S2SV_StartBug> if ( second_ref_frame <= INTRA_FRAME && <S2SV_EndBug> <S2SV_StartBug> single_rd < best_pred_rd [ SINGLE_REFERENCE ] ) { <S2SV_EndBug> best_pred_rd [ SINGLE_REFERENCE ] = single_rd ; <S2SV_StartBug> } else if ( second_ref_frame > INTRA_FRAME && <S2SV_EndBug> <S2SV_StartBug> single_rd < best_pred_rd [ COMPOUND_REFERENCE ] ) { <S2SV_EndBug> best_pred_rd [ COMPOUND_REFERENCE ] = single_rd ; <S2SV_StartBug> } <S2SV_EndBug> if ( hybrid_rd < best_pred_rd [ REFERENCE_MODE_SELECT ] ) best_pred_rd [ REFERENCE_MODE_SELECT ] = hybrid_rd ; } if ( ! mode_excluded && ! disable_skip && ref_frame != INTRA_FRAME && cm -> interp_filter != BILINEAR ) { <S2SV_StartBug> int64_t ref = cpi -> rd_filter_cache [ cm -> interp_filter == SWITCHABLE ? <S2SV_EndBug> SWITCHABLE_FILTERS : cm -> interp_filter ] ; int64_t adj_rd ; for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) { if ( ref == INT64_MAX ) adj_rd = 0 ; <S2SV_StartBug> else if ( cpi -> rd_filter_cache [ i ] == INT64_MAX ) <S2SV_EndBug> <S2SV_StartBug> adj_rd = cpi -> mask_filter_rd - ref + 10 ; <S2SV_EndBug> else <S2SV_StartBug> adj_rd = cpi -> rd_filter_cache [ i ] - ref ; <S2SV_EndBug> adj_rd += this_rd ; <S2SV_StartBug> best_filter_rd [ i ] = MIN ( best_filter_rd [ i ] , adj_rd ) ; <S2SV_EndBug> } } if ( bsize < BLOCK_32X32 ) { if ( bsize < BLOCK_16X16 ) { tx_cache [ ALLOW_8X8 ] = tx_cache [ ONLY_4X4 ] ; tx_cache [ ALLOW_16X16 ] = tx_cache [ ALLOW_8X8 ] ; } tx_cache [ ALLOW_32X32 ] = tx_cache [ ALLOW_16X16 ] ; } if ( ! mode_excluded && this_rd != INT64_MAX ) { for ( i = 0 ; i < TX_MODES && tx_cache [ i ] < INT64_MAX ; i ++ ) { int64_t adj_rd = INT64_MAX ; if ( ref_frame > INTRA_FRAME ) adj_rd = this_rd + tx_cache [ i ] - tx_cache [ cm -> tx_mode ] ; else adj_rd = this_rd ; if ( adj_rd < best_tx_rd [ i ] ) best_tx_rd [ i ] = adj_rd ; } } if ( early_term ) break ; if ( x -> skip && ! comp_pred ) break ; } <S2SV_StartBug> if ( best_rd >= best_rd_so_far ) <S2SV_EndBug> return INT64_MAX ; if ( cpi -> sf . use_uv_intra_rd_estimate ) { <S2SV_StartBug> if ( vp9_ref_order [ best_mode_index ] . ref_frame [ 0 ] == INTRA_FRAME ) { <S2SV_EndBug> <S2SV_StartBug> TX_SIZE uv_tx_size ; <S2SV_EndBug> * mbmi = best_mbmode ; <S2SV_StartBug> uv_tx_size = get_uv_tx_size ( mbmi ) ; <S2SV_EndBug> <S2SV_StartBug> rd_pick_intra_sbuv_mode ( cpi , x , ctx , & rate_uv_intra [ uv_tx_size ] , <S2SV_EndBug> <S2SV_StartBug> & rate_uv_tokenonly [ uv_tx_size ] , <S2SV_EndBug> <S2SV_StartBug> & dist_uv [ uv_tx_size ] , <S2SV_EndBug> <S2SV_StartBug> & skip_uv [ uv_tx_size ] , <S2SV_EndBug> <S2SV_StartBug> BLOCK_8X8 , uv_tx_size ) ; <S2SV_EndBug> } } <S2SV_StartBug> if ( best_rd == INT64_MAX && bsize < BLOCK_8X8 ) { <S2SV_EndBug> * returnrate = INT_MAX ; <S2SV_StartBug> * returndistortion = INT64_MAX ; <S2SV_EndBug> <S2SV_StartBug> return best_rd ; <S2SV_EndBug> } assert ( ( cm -> interp_filter == SWITCHABLE ) || ( cm -> interp_filter == best_mbmode . interp_filter ) || ! is_inter_block ( & best_mbmode ) ) ; <S2SV_StartBug> if ( cpi -> sf . adaptive_rd_thresh ) { <S2SV_EndBug> for ( mode_index = 0 ; mode_index < MAX_REFS ; ++ mode_index ) { int * const fact = & cpi -> rd_thresh_freq_sub8x8 [ bsize ] [ mode_index ] ; if ( mode_index == best_mode_index ) { * fact -= ( * fact >> 3 ) ; } else { * fact = MIN ( * fact + RD_THRESH_INC , cpi -> sf . adaptive_rd_thresh * RD_THRESH_MAX_FACT ) ; } } } * mbmi = best_mbmode ; x -> skip |= best_skip2 ; if ( ! is_inter_block ( & best_mbmode ) ) { for ( i = 0 ; i < 4 ; i ++ ) xd -> mi [ 0 ] -> bmi [ i ] . as_mode = best_bmodes [ i ] . as_mode ; } else { for ( i = 0 ; i < 4 ; ++ i ) <S2SV_StartBug> vpx_memcpy ( & xd -> mi [ 0 ] -> bmi [ i ] , & best_bmodes [ i ] , sizeof ( b_mode_info ) ) ; <S2SV_EndBug> mbmi -> mv [ 0 ] . as_int = xd -> mi [ 0 ] -> bmi [ 3 ] . as_mv [ 0 ] . as_int ; mbmi -> mv [ 1 ] . as_int = xd -> mi [ 0 ] -> bmi [ 3 ] . as_mv [ 1 ] . as_int ; } for ( i = 0 ; i < REFERENCE_MODES ; ++ i ) { if ( best_pred_rd [ i ] == INT64_MAX ) best_pred_diff [ i ] = INT_MIN ; else best_pred_diff [ i ] = best_rd - best_pred_rd [ i ] ; } if ( ! x -> skip ) { for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) { if ( best_filter_rd [ i ] == INT64_MAX ) best_filter_diff [ i ] = 0 ; else best_filter_diff [ i ] = best_rd - best_filter_rd [ i ] ; } if ( cm -> interp_filter == SWITCHABLE ) assert ( best_filter_diff [ SWITCHABLE_FILTERS ] == 0 ) ; } else { vp9_zero ( best_filter_diff ) ; } <S2SV_StartBug> if ( ! x -> skip ) { <S2SV_EndBug> for ( i = 0 ; i < TX_MODES ; i ++ ) { if ( best_tx_rd [ i ] == INT64_MAX ) best_tx_diff [ i ] = 0 ; else best_tx_diff [ i ] = best_rd - best_tx_rd [ i ] ; } } else { vp9_zero ( best_tx_diff ) ; } set_ref_ptrs ( cm , xd , mbmi -> ref_frame [ 0 ] , mbmi -> ref_frame [ 1 ] ) ; <S2SV_StartBug> store_coding_context ( x , ctx , best_mode_index , <S2SV_EndBug> & mbmi -> ref_mvs [ mbmi -> ref_frame [ 0 ] ] [ 0 ] , & mbmi -> ref_mvs [ mbmi -> ref_frame [ 1 ] < 0 ? 0 : mbmi -> ref_frame [ 1 ] ] [ 0 ] , <S2SV_StartBug> best_pred_diff , best_tx_diff , best_filter_diff ) ; <S2SV_EndBug> return best_rd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> void <S2SV_ModEnd> vp9_rd_pick_inter_mode_sub8x8 ( VP9_COMP <S2SV_ModStart> * cpi , TileDataEnc * tile_data , <S2SV_ModStart> * x , <S2SV_ModEnd> int mi_row , <S2SV_ModStart> int mi_col , RD_COST * rd_cost <S2SV_ModEnd> , BLOCK_SIZE bsize <S2SV_ModStart> { VP9_COMMON * const <S2SV_ModStart> cpi -> common ; RD_OPT * const rd_opt = & cpi -> rd ; SPEED_FEATURES * const sf = & cpi -> sf <S2SV_ModStart> ; MACROBLOCKD * const <S2SV_ModStart> ; MB_MODE_INFO * const <S2SV_ModStart> struct segmentation * const <S2SV_ModStart> best_rd_so_far ; int64_t <S2SV_ModEnd> best_pred_diff [ REFERENCE_MODES <S2SV_ModStart> ; MB_MODE_INFO best_mbmode ; int ref_index , best_ref_index <S2SV_ModEnd> = 0 ; <S2SV_ModStart> MAX_REF_FRAMES ] ; vpx_prob comp_mode_p <S2SV_ModEnd> ; INTERP_FILTER tmp_best_filter <S2SV_ModStart> ; int rate_uv_intra , rate_uv_tokenonly <S2SV_ModEnd> ; int64_t dist_uv <S2SV_ModStart> ; int64_t dist_uv <S2SV_ModEnd> ; int skip_uv <S2SV_ModStart> ; int skip_uv ; PREDICTION_MODE mode_uv = DC_PRED ; const <S2SV_ModEnd> int intra_cost_penalty = <S2SV_ModStart> int intra_cost_penalty = vp9_get_intra_cost_penalty ( <S2SV_ModEnd> cm -> base_qindex <S2SV_ModStart> cm -> y_dc_delta_q , cm -> bit_depth <S2SV_ModStart> 0 ; int ref_frame_skip_mask [ 2 ] = { 0 } ; int64_t mask_filter = 0 ; int64_t filter_cache [ SWITCHABLE_FILTER_CONTEXTS ] ; int internal_active_edge = vp9_active_edge_sb ( cpi , mi_row , mi_col ) && vp9_internal_image_edge ( cpi ) <S2SV_ModEnd> ; x -> <S2SV_ModStart> -> skip_encode = sf -> <S2SV_ModEnd> skip_encode_frame && x <S2SV_ModStart> < QIDX_SKIP_THRESH ; memset <S2SV_ModEnd> ( x -> <S2SV_ModStart> , 4 ) ; vp9_zero ( best_mbmode ) ; for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; ++ i ) filter_cache [ i ] = INT64_MAX <S2SV_ModStart> } estimate_ref_frame_costs ( cm , xd <S2SV_ModEnd> , segment_id , <S2SV_ModStart> ; i < SWITCHABLE_FILTER_CONTEXTS <S2SV_ModEnd> ; i ++ <S2SV_ModStart> i ++ ) best_filter_rd <S2SV_ModEnd> [ i ] <S2SV_ModStart> = INT64_MAX ; rate_uv_intra <S2SV_ModEnd> = INT_MAX ; <S2SV_ModStart> = INT_MAX ; rd_cost -> rate <S2SV_ModEnd> = INT_MAX ; <S2SV_ModStart> ] ) { setup_buffer_inter <S2SV_ModEnd> ( cpi , <S2SV_ModStart> , x , <S2SV_ModEnd> ref_frame , bsize <S2SV_ModStart> ) ; } else { ref_frame_skip_mask [ 0 ] <S2SV_ModEnd> |= ( 1 <S2SV_ModStart> ref_frame ) ; ref_frame_skip_mask [ 1 ] |= SECOND_REF_FRAME_MASK ; } frame_mv [ NEWMV ] [ ref_frame ] . as_int = INVALID_MV ; frame_mv [ ZEROMV ] [ ref_frame ] . as_int = 0 ; <S2SV_ModEnd> } for ( <S2SV_ModStart> } for ( ref_index = 0 ; ref_index <S2SV_ModEnd> < MAX_REFS ; <S2SV_ModStart> MAX_REFS ; ++ ref_index <S2SV_ModEnd> ) { int <S2SV_ModStart> = 0 ; <S2SV_ModEnd> int i ; <S2SV_ModStart> = 0 ; <S2SV_ModEnd> ref_frame = vp9_ref_order <S2SV_ModStart> = vp9_ref_order [ ref_index <S2SV_ModEnd> ] . ref_frame <S2SV_ModStart> = vp9_ref_order [ ref_index <S2SV_ModEnd> ] . ref_frame <S2SV_ModStart> ; if ( ref_index <S2SV_ModEnd> > 2 && <S2SV_ModStart> > 2 && sf -> <S2SV_ModEnd> mode_skip_start < MAX_MODES <S2SV_ModStart> { if ( ref_index <S2SV_ModEnd> == 3 ) <S2SV_ModStart> { switch ( best_mbmode <S2SV_ModEnd> . ref_frame [ <S2SV_ModStart> case INTRA_FRAME : <S2SV_ModEnd> break ; case <S2SV_ModStart> case LAST_FRAME : ref_frame_skip_mask [ 0 ] |= ( 1 << GOLDEN_FRAME ) | ( 1 << ALTREF_FRAME ) ; ref_frame_skip_mask [ 1 ] |= SECOND_REF_FRAME_MASK <S2SV_ModEnd> ; break ; <S2SV_ModStart> case GOLDEN_FRAME : ref_frame_skip_mask [ 0 ] |= ( 1 << LAST_FRAME ) | ( 1 << ALTREF_FRAME ) ; ref_frame_skip_mask [ 1 ] |= SECOND_REF_FRAME_MASK <S2SV_ModEnd> ; break ; <S2SV_ModStart> case ALTREF_FRAME : ref_frame_skip_mask [ 0 ] |= ( 1 << GOLDEN_FRAME ) | ( 1 << LAST_FRAME ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> \"Invalid<S2SV_blank>Reference<S2SV_blank>frame\" ) ; break ; } } } if ( ( ref_frame_skip_mask [ 0 ] <S2SV_ModEnd> & ( 1 <S2SV_ModStart> ( 1 << ref_frame ) ) && ( ref_frame_skip_mask [ 1 ] & ( 1 << MAX ( 0 , second_ref_frame ) ) <S2SV_ModEnd> ) ) continue <S2SV_ModStart> ) continue ; if ( ! internal_active_edge && rd_less_than_thresh ( best_rd , rd_opt -> threshes <S2SV_ModEnd> [ segment_id ] <S2SV_ModStart> bsize ] [ ref_index ] , tile_data -> thresh_freq_fact <S2SV_ModEnd> [ bsize ] <S2SV_ModStart> bsize ] [ ref_index ] ) <S2SV_ModEnd> ) continue ; <S2SV_ModStart> ) continue ; comp_pred = <S2SV_ModEnd> second_ref_frame > INTRA_FRAME <S2SV_ModStart> second_ref_frame > INTRA_FRAME ; if ( comp_pred ) { if ( ! cpi -> allow_comp_inter_inter ) continue ; if ( ! ( cpi -> ref_frame_flags & flag_list [ second_ref_frame ] ) ) continue ; if ( segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) ) continue ; if ( ( sf -> mode_search_skip_flags & FLAG_SKIP_COMP_BESTINTRA ) && best_mbmode . <S2SV_ModEnd> ref_frame [ 0 <S2SV_ModStart> [ 0 ] == INTRA_FRAME ) continue ; } if ( ref_frame > INTRA_FRAME && vp9_is_scaled ( & cm -> frame_refs [ ref_frame - 1 ] . sf ) ) continue ; if ( <S2SV_ModEnd> second_ref_frame > INTRA_FRAME <S2SV_ModStart> second_ref_frame > INTRA_FRAME <S2SV_ModEnd> && vp9_is_scaled ( <S2SV_ModStart> ) continue ; if ( comp_pred ) mode_excluded = cm -> reference_mode == SINGLE_REFERENCE ; else if ( ref_frame != INTRA_FRAME ) mode_excluded = cm -> reference_mode == COMPOUND_REFERENCE ; if ( segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) && get_segdata ( seg , segment_id , SEG_LVL_REF_FRAME ) != ( int ) ref_frame ) { continue ; } else if ( ! segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) ) { if ( cpi -> rc . is_src_frame_alt_ref && ( cpi -> oxcf . arnr_max_frames == 0 ) ) continue ; } mbmi -> tx_size = TX_4X4 ; mbmi -> uv_mode = DC_PRED ; mbmi -> ref_frame [ 0 ] = ref_frame ; mbmi -> ref_frame [ 1 ] = second_ref_frame <S2SV_ModEnd> ; mbmi -> <S2SV_ModStart> -> interp_filter ; x -> skip = 0 ; set_ref_ptrs ( cm , xd , ref_frame , second_ref_frame ) ; <S2SV_ModEnd> for ( i <S2SV_ModStart> ] ; } <S2SV_ModEnd> if ( ref_frame <S2SV_ModStart> int rate ; <S2SV_ModEnd> if ( rd_pick_intra_sub_8x8_y_mode <S2SV_ModStart> if ( rate_uv_intra <S2SV_ModEnd> == INT_MAX ) <S2SV_ModStart> ( cpi , x , <S2SV_ModStart> , & rate_uv_intra <S2SV_ModEnd> , & rate_uv_tokenonly <S2SV_ModStart> , & rate_uv_tokenonly <S2SV_ModEnd> , & dist_uv <S2SV_ModStart> , & dist_uv <S2SV_ModEnd> , & skip_uv <S2SV_ModStart> , & skip_uv <S2SV_ModEnd> , & mode_uv <S2SV_ModStart> , & mode_uv <S2SV_ModEnd> ) ; } <S2SV_ModStart> rate2 += rate_uv_intra <S2SV_ModEnd> ; rate_uv = <S2SV_ModStart> rate_uv = rate_uv_tokenonly <S2SV_ModEnd> ; distortion2 += <S2SV_ModStart> distortion2 += dist_uv <S2SV_ModEnd> ; distortion_uv = <S2SV_ModStart> distortion_uv = dist_uv <S2SV_ModEnd> ; mbmi -> <S2SV_ModStart> uv_mode = mode_uv <S2SV_ModEnd> ; } else <S2SV_ModStart> comp_pred ? & x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> LAST_FRAME ) ? rd_opt -> threshes <S2SV_ModEnd> [ segment_id ] <S2SV_ModStart> THR_LAST ] : rd_opt -> threshes <S2SV_ModEnd> [ segment_id ] <S2SV_ModStart> GOLDEN_FRAME ) ? rd_opt -> threshes <S2SV_ModEnd> [ segment_id ] <S2SV_ModStart> : this_rd_thresh ; <S2SV_ModEnd> for ( i <S2SV_ModStart> ++ i ) filter_cache <S2SV_ModEnd> [ i ] <S2SV_ModStart> -> source_variance < sf -> <S2SV_ModEnd> disable_filter_search_var_thresh ) { <S2SV_ModStart> else if ( sf -> <S2SV_ModEnd> adaptive_pred_interp_filter == 1 <S2SV_ModStart> else if ( sf -> <S2SV_ModEnd> adaptive_pred_interp_filter == 2 <S2SV_ModStart> int64_t rs_rd ; MB_MODE_INFO_EXT * mbmi_ext = x -> mbmi_ext ; <S2SV_ModStart> ; tmp_rd = rd_pick_best_sub8x8_mode <S2SV_ModEnd> ( cpi , <S2SV_ModStart> , x , & mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> = vp9_get_switchable_rate ( cpi , xd <S2SV_ModEnd> ) ; rs_rd <S2SV_ModStart> 0 ) ; filter_cache <S2SV_ModEnd> [ switchable_filter_index ] <S2SV_ModStart> = tmp_rd ; filter_cache <S2SV_ModEnd> [ SWITCHABLE_FILTERS ] <S2SV_ModStart> = MIN ( filter_cache <S2SV_ModEnd> [ SWITCHABLE_FILTERS ] <S2SV_ModStart> += rs_rd ; mask_filter <S2SV_ModEnd> = MAX ( <S2SV_ModStart> = MAX ( mask_filter <S2SV_ModEnd> , tmp_rd ) <S2SV_ModStart> == 0 && sf -> <S2SV_ModEnd> use_rd_breakout && best_rd <S2SV_ModStart> { tmp_rd = rd_pick_best_sub8x8_mode <S2SV_ModEnd> ( cpi , <S2SV_ModStart> , x , & x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> += vp9_get_switchable_rate ( cpi , xd <S2SV_ModEnd> ) ; if <S2SV_ModStart> BLOCK_8X8 ) ; memset ( x -> skip_txfm , SKIP_TXFM_NONE , sizeof ( x -> skip_txfm ) ) ; if ( ! <S2SV_ModStart> , tmp_best_rdu ) <S2SV_ModEnd> ) continue ; <S2SV_ModStart> += uv_sse ; <S2SV_ModEnd> } } if <S2SV_ModStart> disable_skip ) { if ( <S2SV_ModEnd> ref_frame != INTRA_FRAME <S2SV_ModStart> } } else <S2SV_ModEnd> { rate2 += <S2SV_ModStart> , distortion2 ) <S2SV_ModEnd> ; } if <S2SV_ModStart> = MAX_MB_PLANE ; best_ref_index = ref_index <S2SV_ModEnd> ; if ( <S2SV_ModStart> 1 ; } rd_cost -> rate <S2SV_ModEnd> = rate2 ; <S2SV_ModStart> = rate2 ; rd_cost -> dist = distortion2 ; rd_cost -> rdcost = this_rd <S2SV_ModEnd> ; best_rd = <S2SV_ModStart> ! x -> select_tx_size <S2SV_ModEnd> ) swap_block_ptr ( <S2SV_ModStart> , ctx , 1 , 0 , 0 , <S2SV_ModStart> max_plane ) ; memcpy <S2SV_ModEnd> ( ctx -> <S2SV_ModStart> -> zcoeff_blk [ TX_4X4 <S2SV_ModEnd> ] , sizeof <S2SV_ModStart> , sizeof ( ctx -> zcoeff_blk [ 0 ] <S2SV_ModEnd> ) * ctx <S2SV_ModStart> if ( ( sf -> <S2SV_ModEnd> mode_search_skip_flags & FLAG_EARLY_TERMINATE <S2SV_ModStart> ) && ( ref_index <S2SV_ModEnd> > MIN_EARLY_TERM_INDEX ) <S2SV_ModStart> ) ) { <S2SV_ModEnd> int qstep = <S2SV_ModStart> = 4 ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { qstep >>= ( xd -> bd - 8 ) ; } # endif <S2SV_ModStart> ; if ( ! comp_pred <S2SV_ModEnd> && single_rd < <S2SV_ModStart> SINGLE_REFERENCE ] ) <S2SV_ModEnd> best_pred_rd [ SINGLE_REFERENCE <S2SV_ModStart> = single_rd ; <S2SV_ModEnd> else if ( <S2SV_ModStart> else if ( comp_pred <S2SV_ModEnd> && single_rd < <S2SV_ModStart> COMPOUND_REFERENCE ] ) <S2SV_ModEnd> best_pred_rd [ COMPOUND_REFERENCE <S2SV_ModStart> = single_rd ; <S2SV_ModEnd> if ( hybrid_rd <S2SV_ModStart> int64_t ref = filter_cache <S2SV_ModEnd> [ cm -> <S2SV_ModStart> else if ( filter_cache <S2SV_ModEnd> [ i ] <S2SV_ModStart> ) adj_rd = mask_filter <S2SV_ModEnd> - ref + <S2SV_ModStart> else adj_rd = filter_cache <S2SV_ModEnd> [ i ] <S2SV_ModStart> , adj_rd ) <S2SV_ModEnd> ; } } <S2SV_ModStart> >= best_rd_so_far ) { rd_cost -> rate = INT_MAX ; rd_cost -> rdcost = INT64_MAX ; return ; } if ( sf -> <S2SV_ModEnd> use_uv_intra_rd_estimate ) { <S2SV_ModStart> { if ( best_mbmode <S2SV_ModEnd> . ref_frame [ <S2SV_ModStart> INTRA_FRAME ) { <S2SV_ModEnd> * mbmi = <S2SV_ModStart> = best_mbmode ; <S2SV_ModEnd> rd_pick_intra_sbuv_mode ( cpi <S2SV_ModStart> , & rate_uv_intra <S2SV_ModEnd> , & rate_uv_tokenonly <S2SV_ModStart> , & rate_uv_tokenonly <S2SV_ModEnd> , & dist_uv <S2SV_ModStart> , & dist_uv <S2SV_ModEnd> , & skip_uv <S2SV_ModStart> , & skip_uv <S2SV_ModEnd> , BLOCK_8X8 , <S2SV_ModStart> , BLOCK_8X8 , TX_4X4 <S2SV_ModEnd> ) ; } <S2SV_ModStart> best_rd == INT64_MAX ) { rd_cost -> rate <S2SV_ModEnd> = INT_MAX ; <S2SV_ModStart> = INT_MAX ; rd_cost -> dist <S2SV_ModEnd> = INT64_MAX ; <S2SV_ModStart> = INT64_MAX ; rd_cost -> rdcost = INT64_MAX ; return <S2SV_ModEnd> ; } assert <S2SV_ModStart> ) ) ; vp9_update_rd_thresh_fact ( tile_data -> thresh_freq_fact , sf -> adaptive_rd_thresh , bsize , best_ref_index ) ; <S2SV_ModEnd> * mbmi = <S2SV_ModStart> ++ i ) memcpy <S2SV_ModEnd> ( & xd <S2SV_ModStart> ) ; } <S2SV_ModEnd> store_coding_context ( x <S2SV_ModStart> , ctx , best_ref_index <S2SV_ModEnd> , best_pred_diff , <S2SV_ModStart> , best_pred_diff , best_filter_diff , 0 ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20763\n\n```\nCWE-787 int mp4client_main ( int argc , char * * argv ) { char c ; const char * str ; int ret_val = 0 ; u32 i , times [ 100 ] , nb_times , dump_mode ; u32 simulation_time_in_ms = 0 ; u32 initial_service_id = 0 ; Bool auto_exit = GF_FALSE ; Bool logs_set = GF_FALSE ; Bool start_fs = GF_FALSE ; Bool use_rtix = GF_FALSE ; Bool pause_at_first = GF_FALSE ; Bool no_cfg_save = GF_FALSE ; Bool is_cfg_only = GF_FALSE ; Double play_from = 0 ; # ifdef GPAC_MEMORY_TRACKING GF_MemTrackerType mem_track = GF_MemTrackerNone ; # endif Double fps = GF_IMPORT_DEFAULT_FPS ; Bool fill_ar , visible , do_uncache , has_command ; char * url_arg , * out_arg , * the_cfg , * rti_file , * views , * mosaic ; FILE * logfile = NULL ; Float scale = 1 ; # ifndef WIN32 dlopen ( NULL , RTLD_NOW | RTLD_GLOBAL ) ; # endif strcpy ( the_url , \".\" ) ; memset ( & user , 0 , sizeof ( GF_User ) ) ; dump_mode = DUMP_NONE ; fill_ar = visible = do_uncache = has_command = GF_FALSE ; url_arg = out_arg = the_cfg = rti_file = views = mosaic = NULL ; nb_times = 0 ; times [ 0 ] = 0 ; for ( i = 1 ; i < ( u32 ) argc ; i ++ ) { char * arg = argv [ i ] ; if ( ! strcmp ( arg , \"-c\" ) || ! strcmp ( arg , \"-cfg\" ) ) { the_cfg = argv [ i + 1 ] ; i ++ ; } else if ( ! strcmp ( arg , \"-mem-track\" ) || ! strcmp ( arg , \"-mem-track-stack\" ) ) { # ifdef GPAC_MEMORY_TRACKING mem_track = ! strcmp ( arg , \"-mem-track-stack\" ) ? GF_MemTrackerBackTrace : GF_MemTrackerSimple ; # else fprintf ( stderr , \"WARNING<S2SV_blank>-<S2SV_blank>GPAC<S2SV_blank>not<S2SV_blank>compiled<S2SV_blank>with<S2SV_blank>Memory<S2SV_blank>Tracker<S2SV_blank>-<S2SV_blank>ignoring<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , arg ) ; # endif } else if ( ! strcmp ( arg , \"-gui\" ) ) { gui_mode = 1 ; } else if ( ! strcmp ( arg , \"-guid\" ) ) { gui_mode = 2 ; } else if ( ! strcmp ( arg , \"-h\" ) || ! strcmp ( arg , \"-help\" ) ) { PrintUsage ( ) ; return 0 ; } } # ifdef GPAC_MEMORY_TRACKING gf_sys_init ( mem_track ) ; # else gf_sys_init ( GF_MemTrackerNone ) ; # endif gf_sys_set_args ( argc , ( const char * * ) argv ) ; cfg_file = gf_cfg_init ( the_cfg , NULL ) ; if ( ! cfg_file ) { fprintf ( stderr , \"Error:<S2SV_blank>Configuration<S2SV_blank>File<S2SV_blank>not<S2SV_blank>found\\\\n\" ) ; return 1 ; } if ( gf_log_set_tools_levels ( gf_cfg_get_key ( cfg_file , \"General\" , \"Logs\" ) ) != GF_OK ) { return 1 ; } if ( gf_cfg_get_key ( cfg_file , \"General\" , \"Logs\" ) != NULL ) { logs_set = GF_TRUE ; } if ( ! gui_mode ) { str = gf_cfg_get_key ( cfg_file , \"General\" , \"ForceGUI\" ) ; if ( str && ! strcmp ( str , \"yes\" ) ) gui_mode = 1 ; } for ( i = 1 ; i < ( u32 ) argc ; i ++ ) { char * arg = argv [ i ] ; if ( ! strcmp ( arg , \"-rti\" ) ) { rti_file = argv [ i + 1 ] ; i ++ ; } else if ( ! strcmp ( arg , \"-rtix\" ) ) { rti_file = argv [ i + 1 ] ; i ++ ; use_rtix = GF_TRUE ; } else if ( ! stricmp ( arg , \"-size\" ) ) { if ( sscanf ( argv [ i + 1 ] , \"%dx%d\" , & forced_width , & forced_height ) != 2 ) { forced_width = forced_height = 0 ; } i ++ ; } else if ( ! strcmp ( arg , \"-quiet\" ) ) { be_quiet = 1 ; } else if ( ! strcmp ( arg , \"-strict-error\" ) ) { gf_log_set_strict_error ( 1 ) ; } else if ( ! strcmp ( arg , \"-log-file\" ) || ! strcmp ( arg , \"-lf\" ) ) { logfile = gf_fopen ( argv [ i + 1 ] , \"wt\" ) ; gf_log_set_callback ( logfile , on_gpac_log ) ; i ++ ; } else if ( ! strcmp ( arg , \"-logs\" ) ) { if ( gf_log_set_tools_levels ( argv [ i + 1 ] ) != GF_OK ) { return 1 ; } logs_set = GF_TRUE ; i ++ ; } else if ( ! strcmp ( arg , \"-log-clock\" ) || ! strcmp ( arg , \"-lc\" ) ) { log_time_start = 1 ; } else if ( ! strcmp ( arg , \"-log-utc\" ) || ! strcmp ( arg , \"-lu\" ) ) { log_utc_time = 1 ; } # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) else if ( ! strcmp ( arg , \"-thread\" ) ) threading_flags = 0 ; # else else if ( ! strcmp ( arg , \"-no-thread\" ) ) threading_flags = GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD | GF_TERM_WINDOW_NO_THREAD ; # endif else if ( ! strcmp ( arg , \"-no-cthread\" ) || ! strcmp ( arg , \"-no-compositor-thread\" ) ) threading_flags |= GF_TERM_NO_COMPOSITOR_THREAD ; else if ( ! strcmp ( arg , \"-no-audio\" ) ) no_audio = 1 ; else if ( ! strcmp ( arg , \"-no-regulation\" ) ) no_regulation = 1 ; else if ( ! strcmp ( arg , \"-fs\" ) ) start_fs = 1 ; else if ( ! strcmp ( arg , \"-opt\" ) ) { set_cfg_option ( argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-conf\" ) ) { set_cfg_option ( argv [ i + 1 ] ) ; is_cfg_only = GF_TRUE ; i ++ ; } else if ( ! strcmp ( arg , \"-ifce\" ) ) { gf_cfg_set_key ( cfg_file , \"Network\" , \"DefaultMCastInterface\" , argv [ i + 1 ] ) ; i ++ ; } else if ( ! stricmp ( arg , \"-help\" ) ) { PrintUsage ( ) ; return 1 ; } else if ( ! stricmp ( arg , \"-noprog\" ) ) { no_prog = 1 ; gf_set_progress_callback ( NULL , progress_quiet ) ; } else if ( ! stricmp ( arg , \"-no-save\" ) || ! stricmp ( arg , \"--no-save\" ) ) { no_cfg_save = 1 ; } else if ( ! stricmp ( arg , \"-ntp-shift\" ) ) { s32 shift = atoi ( argv [ i + 1 ] ) ; i ++ ; gf_net_set_ntp_shift ( shift ) ; } else if ( ! stricmp ( arg , \"-run-for\" ) ) { simulation_time_in_ms = atoi ( argv [ i + 1 ] ) * 1000 ; if ( ! simulation_time_in_ms ) simulation_time_in_ms = 1 ; i ++ ; } else if ( ! strcmp ( arg , \"-out\" ) ) { out_arg = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-fps\" ) ) { fps = atof ( argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-avi\" ) || ! strcmp ( arg , \"-sha\" ) ) { dump_mode &= 0xFFFF0000 ; if ( ! strcmp ( arg , \"-sha\" ) ) dump_mode |= DUMP_SHA1 ; else dump_mode |= DUMP_AVI ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) { if ( ! strcmp ( arg , \"-avi\" ) && ( nb_times != 2 ) ) { fprintf ( stderr , \"Only<S2SV_blank>one<S2SV_blank>time<S2SV_blank>arg<S2SV_blank>found<S2SV_blank>for<S2SV_blank>-avi<S2SV_blank>-<S2SV_blank>check<S2SV_blank>usage\\\\n\" ) ; return 1 ; } i ++ ; } } else if ( ! strcmp ( arg , \"-rgbds\" ) ) { dump_mode |= DUMP_RGB_DEPTH_SHAPE ; } else if ( ! strcmp ( arg , \"-rgbd\" ) ) { dump_mode |= DUMP_RGB_DEPTH ; } else if ( ! strcmp ( arg , \"-depth\" ) ) { dump_mode |= DUMP_DEPTH_ONLY ; } else if ( ! strcmp ( arg , \"-bmp\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_BMP ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! strcmp ( arg , \"-png\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_PNG ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! strcmp ( arg , \"-raw\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_RAW ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! stricmp ( arg , \"-scale\" ) ) { sscanf ( argv [ i + 1 ] , \"%f\" , & scale ) ; i ++ ; } else if ( ! strcmp ( arg , \"-c\" ) || ! strcmp ( arg , \"-cfg\" ) ) { i ++ ; } if ( ! gui_mode ) { if ( arg [ 0 ] != '-' ) { if ( url_arg ) { fprintf ( stderr , \"Several<S2SV_blank>input<S2SV_blank>URLs<S2SV_blank>provided<S2SV_blank>(\\\\\"%s\\\\\",<S2SV_blank>\\\\\"%s\\\\\").<S2SV_blank>Check<S2SV_blank>your<S2SV_blank>command-line.\\\\n\" , url_arg , arg ) ; return 1 ; } url_arg = arg ; } else if ( ! strcmp ( arg , \"-loop\" ) ) loop_at_end = 1 ; else if ( ! strcmp ( arg , \"-bench\" ) ) bench_mode = 1 ; else if ( ! strcmp ( arg , \"-vbench\" ) ) bench_mode = 2 ; else if ( ! strcmp ( arg , \"-sbench\" ) ) bench_mode = 3 ; else if ( ! strcmp ( arg , \"-no-addon\" ) ) enable_add_ons = GF_FALSE ; else if ( ! strcmp ( arg , \"-pause\" ) ) pause_at_first = 1 ; else if ( ! strcmp ( arg , \"-play-from\" ) ) { play_from = atof ( ( const char * ) argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-speed\" ) ) { playback_speed = FLT2FIX ( atof ( ( const char * ) argv [ i + 1 ] ) ) ; if ( playback_speed <= 0 ) playback_speed = FIX_ONE ; i ++ ; } else if ( ! strcmp ( arg , \"-no-wnd\" ) ) user . init_flags |= GF_TERM_WINDOWLESS ; else if ( ! strcmp ( arg , \"-no-back\" ) ) user . init_flags |= GF_TERM_WINDOW_TRANSPARENT ; else if ( ! strcmp ( arg , \"-align\" ) ) { if ( argv [ i + 1 ] [ 0 ] == 'm' ) align_mode = 1 ; else if ( argv [ i + 1 ] [ 0 ] == 'b' ) align_mode = 2 ; align_mode <<= 8 ; if ( argv [ i + 1 ] [ 1 ] == 'm' ) align_mode |= 1 ; else if ( argv [ i + 1 ] [ 1 ] == 'r' ) align_mode |= 2 ; i ++ ; } else if ( ! strcmp ( arg , \"-fill\" ) ) { fill_ar = GF_TRUE ; } else if ( ! strcmp ( arg , \"-show\" ) ) { visible = 1 ; } else if ( ! strcmp ( arg , \"-uncache\" ) ) { do_uncache = GF_TRUE ; } else if ( ! strcmp ( arg , \"-exit\" ) ) auto_exit = GF_TRUE ; else if ( ! stricmp ( arg , \"-views\" ) ) { views = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-mosaic\" ) ) { mosaic = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-com\" ) ) { has_command = GF_TRUE ; i ++ ; } else if ( ! stricmp ( arg , \"-service\" ) ) { initial_service_id = atoi ( argv [ i + 1 ] ) ; i ++ ; } } } if ( is_cfg_only ) { gf_cfg_del ( cfg_file ) ; fprintf ( stderr , \"GPAC<S2SV_blank>Config<S2SV_blank>updated\\\\n\" ) ; return 0 ; } if ( do_uncache ) { const char * cache_dir = gf_cfg_get_key ( cfg_file , \"General\" , \"CacheDirectory\" ) ; do_flatten_cache ( cache_dir ) ; fprintf ( stderr , \"GPAC<S2SV_blank>Cache<S2SV_blank>dir<S2SV_blank>%s<S2SV_blank>flattened\\\\n\" , cache_dir ) ; gf_cfg_del ( cfg_file ) ; return 0 ; } if ( dump_mode && ! url_arg ) { FILE * test ; url_arg = ( char * ) gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) ; test = url_arg ? gf_fopen ( url_arg , \"rt\" ) : NULL ; if ( ! test ) url_arg = NULL ; else gf_fclose ( test ) ; if ( ! url_arg ) { fprintf ( stderr , \"Missing<S2SV_blank>argument<S2SV_blank>for<S2SV_blank>dump\\\\n\" ) ; PrintUsage ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } } if ( ! gui_mode && ! url_arg && ( gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) != NULL ) ) { gui_mode = 1 ; } # ifdef WIN32 if ( gui_mode == 1 ) { const char * opt ; TCHAR buffer [ 1024 ] ; DWORD res = GetCurrentDirectory ( 1024 , buffer ) ; buffer [ res ] = 0 ; opt = gf_cfg_get_key ( cfg_file , \"General\" , \"ModulesDirectory\" ) ; if ( strstr ( opt , buffer ) ) { gui_mode = 1 ; } else { gui_mode = 2 ; } } # endif if ( gui_mode == 1 ) { hide_shell ( 1 ) ; } if ( gui_mode ) { no_prog = 1 ; gf_set_progress_callback ( NULL , progress_quiet ) ; } if ( ! url_arg && simulation_time_in_ms ) simulation_time_in_ms += gf_sys_clock ( ) ; # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) carbon_init ( ) ; # endif if ( dump_mode ) rti_file = NULL ; if ( ! logs_set ) { gf_log_set_tool_level ( GF_LOG_ALL , GF_LOG_WARNING ) ; } if ( rti_file || logfile || log_utc_time || log_time_start ) gf_log_set_callback ( NULL , on_gpac_log ) ; if ( rti_file ) init_rti_logs ( rti_file , url_arg , use_rtix ) ; { GF_SystemRTInfo rti ; if ( gf_sys_get_rti ( 0 , & rti , 0 ) ) fprintf ( stderr , \"System<S2SV_blank>info:<S2SV_blank>%d<S2SV_blank>MB<S2SV_blank>RAM<S2SV_blank>-<S2SV_blank>%d<S2SV_blank>cores\\\\n\" , ( u32 ) ( rti . physical_memory / 1024 / 1024 ) , rti . nb_cores ) ; } if ( dump_mode ) { user . init_flags |= GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD | GF_TERM_NO_REGULATION ; if ( ! visible ) user . init_flags |= GF_TERM_INIT_HIDE ; gf_cfg_set_key ( cfg_file , \"Audio\" , \"DriverName\" , \"Raw<S2SV_blank>Audio<S2SV_blank>Output\" ) ; no_cfg_save = GF_TRUE ; } else { init_w = forced_width ; init_h = forced_height ; } user . modules = gf_modules_new ( NULL , cfg_file ) ; if ( user . modules ) i = gf_modules_get_count ( user . modules ) ; if ( ! i || ! user . modules ) { fprintf ( stderr , \"Error:<S2SV_blank>no<S2SV_blank>modules<S2SV_blank>found<S2SV_blank>-<S2SV_blank>exiting\\\\n\" ) ; if ( user . modules ) gf_modules_del ( user . modules ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } fprintf ( stderr , \"Modules<S2SV_blank>Found<S2SV_blank>:<S2SV_blank>%d<S2SV_blank>\\\\n\" , i ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"GPACVersion\" ) ; if ( ! str || strcmp ( str , GPAC_FULL_VERSION ) ) { gf_cfg_del_section ( cfg_file , \"PluginsCache\" ) ; gf_cfg_set_key ( cfg_file , \"General\" , \"GPACVersion\" , GPAC_FULL_VERSION ) ; } user . config = cfg_file ; user . EventProc = GPAC_EventProc ; user . opaque = user . modules ; if ( threading_flags ) user . init_flags |= threading_flags ; if ( no_audio ) user . init_flags |= GF_TERM_NO_AUDIO ; if ( no_regulation ) user . init_flags |= GF_TERM_NO_REGULATION ; if ( threading_flags & ( GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD ) ) term_step = GF_TRUE ; if ( dump_mode ) user . init_flags |= GF_TERM_USE_AUDIO_HW_CLOCK ; if ( bench_mode ) { gf_cfg_discard_changes ( user . config ) ; auto_exit = GF_TRUE ; gf_cfg_set_key ( user . config , \"Audio\" , \"DriverName\" , \"Raw<S2SV_blank>Audio<S2SV_blank>Output\" ) ; if ( bench_mode != 2 ) { gf_cfg_set_key ( user . config , \"Video\" , \"DriverName\" , \"Raw<S2SV_blank>Video<S2SV_blank>Output\" ) ; gf_cfg_set_key ( user . config , \"RAWVideo\" , \"RawOutput\" , \"null\" ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"OpenGLMode\" , \"disable\" ) ; } else { gf_cfg_set_key ( user . config , \"Video\" , \"DisableVSync\" , \"yes\" ) ; } } { char dim [ 50 ] ; sprintf ( dim , \"%d\" , forced_width ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"DefaultWidth\" , forced_width ? dim : NULL ) ; sprintf ( dim , \"%d\" , forced_height ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"DefaultHeight\" , forced_height ? dim : NULL ) ; } fprintf ( stderr , \"Loading<S2SV_blank>GPAC<S2SV_blank>Terminal\\\\n\" ) ; i = gf_sys_clock ( ) ; term = gf_term_new ( & user ) ; if ( ! term ) { fprintf ( stderr , \"\\\\nInit<S2SV_blank>error<S2SV_blank>-<S2SV_blank>check<S2SV_blank>you<S2SV_blank>have<S2SV_blank>at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>video<S2SV_blank>out<S2SV_blank>and<S2SV_blank>one<S2SV_blank>rasterizer...\\\\nFound<S2SV_blank>modules:\\\\n\" ) ; list_modules ( user . modules ) ; gf_modules_del ( user . modules ) ; gf_cfg_discard_changes ( cfg_file ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } fprintf ( stderr , \"Terminal<S2SV_blank>Loaded<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>ms\\\\n\" , gf_sys_clock ( ) - i ) ; if ( bench_mode ) { display_rti = 2 ; gf_term_set_option ( term , GF_OPT_VIDEO_BENCH , ( bench_mode == 3 ) ? 2 : 1 ) ; if ( bench_mode == 1 ) bench_mode = 2 ; } if ( dump_mode ) { if ( fill_ar ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_FILL_SCREEN ) ; } else { str = gf_cfg_get_key ( cfg_file , \"Video\" , \"DriverName\" ) ; if ( ! bench_mode && ! strcmp ( str , \"Raw<S2SV_blank>Video<S2SV_blank>Output\" ) ) fprintf ( stderr , \"WARNING:<S2SV_blank>using<S2SV_blank>raw<S2SV_blank>output<S2SV_blank>video<S2SV_blank>(memory<S2SV_blank>only)<S2SV_blank>-<S2SV_blank>no<S2SV_blank>display<S2SV_blank>used\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"Audio\" , \"DriverName\" ) ; if ( ! str || ! strcmp ( str , \"No<S2SV_blank>Audio<S2SV_blank>Output<S2SV_blank>Available\" ) ) fprintf ( stderr , \"WARNING:<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>output<S2SV_blank>available<S2SV_blank>-<S2SV_blank>make<S2SV_blank>sure<S2SV_blank>no<S2SV_blank>other<S2SV_blank>program<S2SV_blank>is<S2SV_blank>locking<S2SV_blank>the<S2SV_blank>sound<S2SV_blank>card\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"NoMIMETypeFetch\" ) ; no_mime_check = ( str && ! stricmp ( str , \"yes\" ) ) ? 1 : 0 ; } str = gf_cfg_get_key ( cfg_file , \"HTTPProxy\" , \"Enabled\" ) ; if ( str && ! strcmp ( str , \"yes\" ) ) { str = gf_cfg_get_key ( cfg_file , \"HTTPProxy\" , \"Name\" ) ; if ( str ) fprintf ( stderr , \"HTTP<S2SV_blank>Proxy<S2SV_blank>%s<S2SV_blank>enabled\\\\n\" , str ) ; } if ( rti_file ) { str = gf_cfg_get_key ( cfg_file , \"General\" , \"RTIRefreshPeriod\" ) ; if ( str ) { rti_update_time_ms = atoi ( str ) ; } else { gf_cfg_set_key ( cfg_file , \"General\" , \"RTIRefreshPeriod\" , \"200\" ) ; } UpdateRTInfo ( \"At<S2SV_blank>GPAC<S2SV_blank>load<S2SV_blank>time\\\\n\" ) ; } Run = 1 ; if ( dump_mode ) { if ( ! nb_times ) { times [ 0 ] = 0 ; nb_times ++ ; } ret_val = dump_file ( url_arg , out_arg , dump_mode , fps , forced_width , forced_height , scale , times , nb_times ) ; Run = 0 ; } else if ( views ) { } else if ( ! gui_mode && url_arg ) { char * ext ; if ( strlen ( url_arg ) >= sizeof ( the_url ) ) { fprintf ( stderr , \"Input<S2SV_blank>url<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long,<S2SV_blank>truncating<S2SV_blank>to<S2SV_blank>%d<S2SV_blank>chars.\\\\n\" , url_arg , ( int ) ( sizeof ( the_url ) - 1 ) ) ; strncpy ( the_url , url_arg , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_url ) - 1 ] = 0 ; } else { strcpy ( the_url , url_arg ) ; } ext = strrchr ( the_url , '.' ) ; if ( ext && ( ! stricmp ( ext , \".m3u\" ) || ! stricmp ( ext , \".pls\" ) ) ) { GF_Err e = GF_OK ; fprintf ( stderr , \"Opening<S2SV_blank>Playlist<S2SV_blank>%s\\\\n\" , the_url ) ; strcpy ( pl_path , the_url ) ; if ( ! strncmp ( \"http:\" , the_url , 5 ) ) { GF_DownloadSession * sess = gf_dm_sess_new ( term -> downloader , the_url , GF_NETIO_SESSION_NOT_THREADED , NULL , NULL , & e ) ; if ( sess ) { e = gf_dm_sess_process ( sess ) ; if ( ! e ) { strncpy ( the_url , gf_dm_sess_get_cache_name ( sess ) , sizeof ( the_url ) - 1 ) ; <S2SV_StartBug> the_url [ sizeof ( the_cfg ) - 1 ] = 0 ; <S2SV_EndBug> } gf_dm_sess_del ( sess ) ; } } playlist = e ? NULL : gf_fopen ( the_url , \"rt\" ) ; readonly_playlist = 1 ; if ( playlist ) { request_next_playlist_item = GF_TRUE ; } else { if ( e ) fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>playlist<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , the_url , gf_error_to_string ( e ) ) ; fprintf ( stderr , \"Hit<S2SV_blank>\\'h\\'<S2SV_blank>for<S2SV_blank>help\\\\n\\\\n\" ) ; } } else { fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; if ( pause_at_first ) fprintf ( stderr , \"[Status:<S2SV_blank>Paused]\\\\n\" ) ; gf_term_connect_from_time ( term , the_url , ( u64 ) ( play_from * 1000 ) , pause_at_first ) ; } } else { fprintf ( stderr , \"Hit<S2SV_blank>\\'h\\'<S2SV_blank>for<S2SV_blank>help\\\\n\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) ; if ( str ) { strncpy ( the_url , \"MP4Client<S2SV_blank>\" GPAC_FULL_VERSION , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_url ) - 1 ] = 0 ; gf_term_connect ( term , str ) ; startup_file = 1 ; is_connected = 1 ; } } if ( gui_mode == 2 ) gui_mode = 0 ; if ( start_fs ) gf_term_set_option ( term , GF_OPT_FULLSCREEN , 1 ) ; if ( views ) { char szTemp [ 4046 ] ; sprintf ( szTemp , \"views://%s\" , views ) ; gf_term_connect ( term , szTemp ) ; } if ( mosaic ) { char szTemp [ 4046 ] ; sprintf ( szTemp , \"mosaic://%s\" , mosaic ) ; gf_term_connect ( term , szTemp ) ; } if ( bench_mode ) { rti_update_time_ms = 500 ; bench_mode_start = gf_sys_clock ( ) ; } while ( Run ) { if ( ( gui_mode == 1 ) || ! gf_prompt_has_input ( ) ) { if ( reload ) { reload = 0 ; gf_term_disconnect ( term ) ; gf_term_connect ( term , startup_file ? gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) : the_url ) ; } if ( restart && gf_term_get_option ( term , GF_OPT_IS_OVER ) ) { restart = 0 ; gf_term_play_from_time ( term , 0 , 0 ) ; } if ( request_next_playlist_item ) { c = '\\\\n' ; request_next_playlist_item = 0 ; goto force_input ; } if ( has_command && is_connected ) { has_command = GF_FALSE ; for ( i = 0 ; i < ( u32 ) argc ; i ++ ) { if ( ! strcmp ( argv [ i ] , \"-com\" ) ) { gf_term_scene_update ( term , NULL , argv [ i + 1 ] ) ; i ++ ; } } } if ( initial_service_id && is_connected ) { GF_ObjectManager * root_od = gf_term_get_root_object ( term ) ; if ( root_od ) { gf_term_select_service ( term , root_od , initial_service_id ) ; initial_service_id = 0 ; } } if ( ! use_rtix || display_rti ) UpdateRTInfo ( NULL ) ; if ( term_step ) { gf_term_process_step ( term ) ; } else { gf_sleep ( rti_update_time_ms ) ; } if ( auto_exit && eos_seen && gf_term_get_option ( term , GF_OPT_IS_OVER ) ) { Run = GF_FALSE ; } if ( simulation_time_in_ms && ( ( gf_term_get_elapsed_time_in_ms ( term ) > simulation_time_in_ms ) || ( ! url_arg && gf_sys_clock ( ) > simulation_time_in_ms ) ) ) { Run = GF_FALSE ; } continue ; } c = gf_prompt_get_char ( ) ; force_input : switch ( c ) { case 'q' : { GF_Event evt ; memset ( & evt , 0 , sizeof ( GF_Event ) ) ; evt . type = GF_EVENT_QUIT ; gf_term_send_event ( term , & evt ) ; } break ; case 'X' : exit ( 0 ) ; break ; case 'Q' : break ; case 'o' : startup_file = 0 ; gf_term_disconnect ( term ) ; fprintf ( stderr , \"Enter<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL\\\\n\" ) ; if ( 1 > scanf ( \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>absolute<S2SV_blank>URL,<S2SV_blank>aborting\\\\n\" ) ; break ; } if ( rti_file ) init_rti_logs ( rti_file , the_url , use_rtix ) ; gf_term_connect ( term , the_url ) ; break ; case 'O' : gf_term_disconnect ( term ) ; fprintf ( stderr , \"Enter<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL<S2SV_blank>to<S2SV_blank>the<S2SV_blank>playlist\\\\n\" ) ; if ( 1 > scanf ( \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL,<S2SV_blank>aborting.\\\\n\" ) ; break ; } playlist = gf_fopen ( the_url , \"rt\" ) ; if ( playlist ) { if ( 1 > fscanf ( playlist , \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>any<S2SV_blank>URL<S2SV_blank>from<S2SV_blank>playlist,<S2SV_blank>aborting.\\\\n\" ) ; gf_fclose ( playlist ) ; break ; } fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect ( term , the_url ) ; } break ; case '\\\\n' : case 'N' : if ( playlist ) { int res ; gf_term_disconnect ( term ) ; res = fscanf ( playlist , \"%s\" , the_url ) ; if ( ( res == EOF ) && loop_at_end ) { fseek ( playlist , 0 , SEEK_SET ) ; res = fscanf ( playlist , \"%s\" , the_url ) ; } if ( res == EOF ) { fprintf ( stderr , \"No<S2SV_blank>more<S2SV_blank>items<S2SV_blank>-<S2SV_blank>exiting\\\\n\" ) ; Run = 0 ; } else if ( the_url [ 0 ] == '#' ) { request_next_playlist_item = GF_TRUE ; } else { fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect_with_path ( term , the_url , pl_path ) ; } } break ; case 'P' : if ( playlist ) { u32 count ; gf_term_disconnect ( term ) ; if ( 1 > scanf ( \"%u\" , & count ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>number,<S2SV_blank>aborting.\\\\n\" ) ; break ; } while ( count ) { if ( fscanf ( playlist , \"%s\" , the_url ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>line,<S2SV_blank>aborting\\\\n\" ) ; break ; } count -- ; } fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect ( term , the_url ) ; } break ; case 'r' : if ( is_connected ) reload = 1 ; break ; case 'D' : if ( is_connected ) gf_term_disconnect ( term ) ; break ; case 'p' : if ( is_connected ) { Bool is_pause = gf_term_get_option ( term , GF_OPT_PLAY_STATE ) ; fprintf ( stderr , \"[Status:<S2SV_blank>%s]\\\\n\" , is_pause ? \"Playing\" : \"Paused\" ) ; gf_term_set_option ( term , GF_OPT_PLAY_STATE , is_pause ? GF_STATE_PLAYING : GF_STATE_PAUSED ) ; } break ; case 's' : if ( is_connected ) { gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_STEP_PAUSE ) ; fprintf ( stderr , \"Step<S2SV_blank>time:<S2SV_blank>\" ) ; PrintTime ( gf_term_get_time_in_ms ( term ) ) ; fprintf ( stderr , \"\\\\n\" ) ; } break ; case 'z' : case 'T' : if ( ! CanSeek || ( Duration <= 2000 ) ) { fprintf ( stderr , \"scene<S2SV_blank>not<S2SV_blank>seekable\\\\n\" ) ; } else { Double res ; s32 seekTo ; fprintf ( stderr , \"Duration:<S2SV_blank>\" ) ; PrintTime ( Duration ) ; res = gf_term_get_time_in_ms ( term ) ; if ( c == 'z' ) { res *= 100 ; res /= ( s64 ) Duration ; fprintf ( stderr , \"<S2SV_blank>(current<S2SV_blank>%.2f<S2SV_blank>%%)\\\\nEnter<S2SV_blank>Seek<S2SV_blank>percentage:\\\\n\" , res ) ; if ( scanf ( \"%d\" , & seekTo ) == 1 ) { if ( seekTo > 100 ) seekTo = 100 ; res = ( Double ) ( s64 ) Duration ; res /= 100 ; res *= seekTo ; gf_term_play_from_time ( term , ( u64 ) ( s64 ) res , 0 ) ; } } else { u32 r , h , m , s ; fprintf ( stderr , \"<S2SV_blank>-<S2SV_blank>Current<S2SV_blank>Time:<S2SV_blank>\" ) ; PrintTime ( ( u64 ) res ) ; fprintf ( stderr , \"\\\\nEnter<S2SV_blank>seek<S2SV_blank>time<S2SV_blank>(Format:<S2SV_blank>s,<S2SV_blank>m:s<S2SV_blank>or<S2SV_blank>h:m:s):\\\\n\" ) ; h = m = s = 0 ; r = scanf ( \"%d:%d:%d\" , & h , & m , & s ) ; if ( r == 2 ) { s = m ; m = h ; h = 0 ; } else if ( r == 1 ) { s = h ; m = h = 0 ; } if ( r && ( r <= 3 ) ) { u64 time = h * 3600 + m * 60 + s ; gf_term_play_from_time ( term , time * 1000 , 0 ) ; } } } break ; case 't' : { if ( is_connected ) { fprintf ( stderr , \"Current<S2SV_blank>Time:<S2SV_blank>\" ) ; PrintTime ( gf_term_get_time_in_ms ( term ) ) ; fprintf ( stderr , \"<S2SV_blank>-<S2SV_blank>Duration:<S2SV_blank>\" ) ; PrintTime ( Duration ) ; fprintf ( stderr , \"\\\\n\" ) ; } } break ; case 'w' : if ( is_connected ) PrintWorldInfo ( term ) ; break ; case 'v' : if ( is_connected ) PrintODList ( term , NULL , 0 , 0 , \"Root\" ) ; break ; case 'i' : if ( is_connected ) { u32 ID ; fprintf ( stderr , \"Enter<S2SV_blank>OD<S2SV_blank>ID<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>main<S2SV_blank>OD):<S2SV_blank>\" ) ; fflush ( stderr ) ; if ( scanf ( \"%ud\" , & ID ) == 1 ) { ViewOD ( term , ID , ( u32 ) - 1 , NULL ) ; } else { char str_url [ GF_MAX_PATH ] ; if ( scanf ( \"%s\" , str_url ) == 1 ) ViewOD ( term , 0 , ( u32 ) - 1 , str_url ) ; } } break ; case 'j' : if ( is_connected ) { u32 num ; do { fprintf ( stderr , \"Enter<S2SV_blank>OD<S2SV_blank>number<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>main<S2SV_blank>OD):<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%ud\" , & num ) ) ; ViewOD ( term , ( u32 ) - 1 , num , NULL ) ; } break ; case 'b' : if ( is_connected ) ViewODs ( term , 1 ) ; break ; case 'm' : if ( is_connected ) ViewODs ( term , 0 ) ; break ; case 'l' : list_modules ( user . modules ) ; break ; case 'n' : if ( is_connected ) set_navigation ( ) ; break ; case 'x' : if ( is_connected ) gf_term_set_option ( term , GF_OPT_NAVIGATION_TYPE , 0 ) ; break ; case 'd' : if ( is_connected ) { GF_ObjectManager * odm = NULL ; char radname [ GF_MAX_PATH ] , * sExt ; GF_Err e ; u32 i , count , odid ; Bool xml_dump , std_out ; radname [ 0 ] = 0 ; do { fprintf ( stderr , \"Enter<S2SV_blank>Inline<S2SV_blank>OD<S2SV_blank>ID<S2SV_blank>if<S2SV_blank>any<S2SV_blank>or<S2SV_blank>0<S2SV_blank>:<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%ud\" , & odid ) ) ; if ( odid ) { GF_ObjectManager * root_odm = gf_term_get_root_object ( term ) ; if ( ! root_odm ) break ; count = gf_term_get_object_count ( term , root_odm ) ; for ( i = 0 ; i < count ; i ++ ) { GF_MediaInfo info ; odm = gf_term_get_object ( term , root_odm , i ) ; if ( gf_term_get_object_info ( term , odm , & info ) == GF_OK ) { if ( info . od -> objectDescriptorID == odid ) break ; } odm = NULL ; } } do { fprintf ( stderr , \"Enter<S2SV_blank>file<S2SV_blank>radical<S2SV_blank>name<S2SV_blank>(+\\\\\\'.x\\\\\\'<S2SV_blank>for<S2SV_blank>XML<S2SV_blank>dumping)<S2SV_blank>-<S2SV_blank>\\\\\"std\\\\\"<S2SV_blank>for<S2SV_blank>stderr:<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%s\" , radname ) ) ; sExt = strrchr ( radname , '.' ) ; xml_dump = 0 ; if ( sExt ) { if ( ! stricmp ( sExt , \".x\" ) ) xml_dump = 1 ; sExt [ 0 ] = 0 ; } std_out = strnicmp ( radname , \"std\" , 3 ) ? 0 : 1 ; e = gf_term_dump_scene ( term , std_out ? NULL : radname , NULL , xml_dump , 0 , odm ) ; fprintf ( stderr , \"Dump<S2SV_blank>done<S2SV_blank>(%s)\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'c' : PrintGPACConfig ( ) ; break ; case '3' : { Bool use_3d = ! gf_term_get_option ( term , GF_OPT_USE_OPENGL ) ; if ( gf_term_set_option ( term , GF_OPT_USE_OPENGL , use_3d ) == GF_OK ) { fprintf ( stderr , \"Using<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>2D<S2SV_blank>drawing\\\\n\" , use_3d ? \"OpenGL\" : \"2D<S2SV_blank>rasterizer\" ) ; } } break ; case 'k' : { Bool opt = gf_term_get_option ( term , GF_OPT_STRESS_MODE ) ; opt = ! opt ; fprintf ( stderr , \"Turning<S2SV_blank>stress<S2SV_blank>mode<S2SV_blank>%s\\\\n\" , opt ? \"on\" : \"off\" ) ; gf_term_set_option ( term , GF_OPT_STRESS_MODE , opt ) ; } break ; case '4' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_4_3 ) ; break ; case '5' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_16_9 ) ; break ; case '6' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_FILL_SCREEN ) ; break ; case '7' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_KEEP ) ; break ; case 'C' : switch ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) ) { case GF_MEDIA_CACHE_DISABLED : gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , GF_MEDIA_CACHE_ENABLED ) ; break ; case GF_MEDIA_CACHE_ENABLED : gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , GF_MEDIA_CACHE_DISABLED ) ; break ; case GF_MEDIA_CACHE_RUNNING : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>is<S2SV_blank>running<S2SV_blank>-<S2SV_blank>please<S2SV_blank>stop<S2SV_blank>it<S2SV_blank>first\\\\n\" ) ; continue ; } switch ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) ) { case GF_MEDIA_CACHE_ENABLED : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Enabled\\\\n\" ) ; break ; case GF_MEDIA_CACHE_DISABLED : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Disabled\\\\n\" ) ; break ; case GF_MEDIA_CACHE_RUNNING : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Running\\\\n\" ) ; break ; } break ; case 'S' : case 'A' : if ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) == GF_MEDIA_CACHE_RUNNING ) { gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , ( c == 'S' ) ? GF_MEDIA_CACHE_DISABLED : GF_MEDIA_CACHE_DISCARD ) ; fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>stopped\\\\n\" ) ; } else { fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>not<S2SV_blank>running\\\\n\" ) ; } break ; case 'R' : display_rti = ! display_rti ; ResetCaption ( ) ; break ; case 'F' : if ( display_rti ) display_rti = 0 ; else display_rti = 2 ; ResetCaption ( ) ; break ; case 'u' : { GF_Err e ; char szCom [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>command<S2SV_blank>to<S2SV_blank>send:\\\\n\" ) ; fflush ( stdin ) ; szCom [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szCom ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>command<S2SV_blank>to<S2SV_blank>send,<S2SV_blank>aborting.\\\\n\" ) ; break ; } e = gf_term_scene_update ( term , NULL , szCom ) ; if ( e ) fprintf ( stderr , \"Processing<S2SV_blank>command<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'e' : { GF_Err e ; char jsCode [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>JavaScript<S2SV_blank>code<S2SV_blank>to<S2SV_blank>evaluate:\\\\n\" ) ; fflush ( stdin ) ; jsCode [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , jsCode ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>code<S2SV_blank>to<S2SV_blank>evaluate,<S2SV_blank>aborting.\\\\n\" ) ; break ; } e = gf_term_scene_update ( term , \"application/ecmascript\" , jsCode ) ; if ( e ) fprintf ( stderr , \"Processing<S2SV_blank>JS<S2SV_blank>code<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'L' : { char szLog [ 1024 ] , * cur_logs ; cur_logs = gf_log_get_tools_levels ( ) ; fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>log<S2SV_blank>level<S2SV_blank>(current<S2SV_blank>tools<S2SV_blank>%s):\\\\n\" , cur_logs ) ; gf_free ( cur_logs ) ; if ( scanf ( \"%s\" , szLog ) < 1 ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>new<S2SV_blank>log<S2SV_blank>level,<S2SV_blank>aborting.\\\\n\" ) ; break ; } gf_log_modify_tools_levels ( szLog ) ; } break ; case 'g' : { GF_SystemRTInfo rti ; gf_sys_get_rti ( rti_update_time_ms , & rti , 0 ) ; fprintf ( stderr , \"GPAC<S2SV_blank>allocated<S2SV_blank>memory<S2SV_blank>\" LLD \"\\\\n\" , rti . gpac_memory ) ; } break ; case 'M' : { u32 size ; do { fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>video<S2SV_blank>cache<S2SV_blank>memory<S2SV_blank>in<S2SV_blank>kBytes<S2SV_blank>(current<S2SV_blank>%ud):\\\\n\" , gf_term_get_option ( term , GF_OPT_VIDEO_CACHE_SIZE ) ) ; } while ( 1 > scanf ( \"%ud\" , & size ) ) ; gf_term_set_option ( term , GF_OPT_VIDEO_CACHE_SIZE , size ) ; } break ; case 'H' : { u32 http_bitrate = gf_term_get_option ( term , GF_OPT_HTTP_MAX_RATE ) ; do { fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>http<S2SV_blank>bitrate<S2SV_blank>in<S2SV_blank>bps<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>none)<S2SV_blank>-<S2SV_blank>current<S2SV_blank>limit:<S2SV_blank>%d\\\\n\" , http_bitrate ) ; } while ( 1 > scanf ( \"%ud\" , & http_bitrate ) ) ; gf_term_set_option ( term , GF_OPT_HTTP_MAX_RATE , http_bitrate ) ; } break ; case 'E' : gf_term_set_option ( term , GF_OPT_RELOAD_CONFIG , 1 ) ; break ; case 'B' : switch_bench ( ! bench_mode ) ; break ; case 'Y' : { char szOpt [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>option<S2SV_blank>to<S2SV_blank>set<S2SV_blank>(Section:Name=Value):\\\\n\" ) ; fflush ( stdin ) ; szOpt [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szOpt ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>option\\\\n\" ) ; break ; } set_cfg_option ( szOpt ) ; } break ; case 'Z' : { char szFileName [ 100 ] ; u32 nb_pass , nb_views , offscreen_view = 0 ; GF_VideoSurface fb ; GF_Err e ; nb_pass = 1 ; nb_views = gf_term_get_option ( term , GF_OPT_NUM_STEREO_VIEWS ) ; if ( nb_views > 1 ) { fprintf ( stderr , \"Auto-stereo<S2SV_blank>mode<S2SV_blank>detected<S2SV_blank>-<S2SV_blank>type<S2SV_blank>number<S2SV_blank>of<S2SV_blank>view<S2SV_blank>to<S2SV_blank>dump<S2SV_blank>(0<S2SV_blank>is<S2SV_blank>main<S2SV_blank>output,<S2SV_blank>1<S2SV_blank>to<S2SV_blank>%d<S2SV_blank>offscreen<S2SV_blank>view,<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>all<S2SV_blank>offscreen,<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>all<S2SV_blank>offscreen<S2SV_blank>and<S2SV_blank>main)\\\\n\" , nb_views , nb_views + 1 , nb_views + 2 ) ; if ( scanf ( \"%d\" , & offscreen_view ) != 1 ) { offscreen_view = 0 ; } if ( offscreen_view == nb_views + 1 ) { offscreen_view = 1 ; nb_pass = nb_views ; } else if ( offscreen_view == nb_views + 2 ) { offscreen_view = 0 ; nb_pass = nb_views + 1 ; } } while ( nb_pass ) { nb_pass -- ; if ( offscreen_view ) { sprintf ( szFileName , \"view%d_dump.png\" , offscreen_view ) ; e = gf_term_get_offscreen_buffer ( term , & fb , offscreen_view - 1 , 0 ) ; } else { sprintf ( szFileName , \"gpac_video_dump_\" LLU \".png\" , gf_net_get_utc ( ) ) ; e = gf_term_get_screen_buffer ( term , & fb ) ; } offscreen_view ++ ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>dumping<S2SV_blank>screen<S2SV_blank>buffer<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; nb_pass = 0 ; } else { # ifndef GPAC_DISABLE_AV_PARSERS u32 dst_size = fb . width * fb . height * 4 ; char * dst = ( char * ) gf_malloc ( sizeof ( char ) * dst_size ) ; e = gf_img_png_enc ( fb . video_buffer , fb . width , fb . height , fb . pitch_y , fb . pixel_format , dst , & dst_size ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>encoding<S2SV_blank>PNG<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; nb_pass = 0 ; } else { FILE * png = gf_fopen ( szFileName , \"wb\" ) ; if ( ! png ) { fprintf ( stderr , \"Error<S2SV_blank>writing<S2SV_blank>file<S2SV_blank>%s\\\\n\" , szFileName ) ; nb_pass = 0 ; } else { gf_fwrite ( dst , dst_size , 1 , png ) ; gf_fclose ( png ) ; fprintf ( stderr , \"Dump<S2SV_blank>to<S2SV_blank>%s\\\\n\" , szFileName ) ; } } if ( dst ) gf_free ( dst ) ; gf_term_release_screen_buffer ( term , & fb ) ; # endif } } fprintf ( stderr , \"Done:<S2SV_blank>%s\\\\n\" , szFileName ) ; } break ; case 'G' : { GF_ObjectManager * root_od , * odm ; u32 index ; char szOpt [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>0-based<S2SV_blank>index<S2SV_blank>of<S2SV_blank>object<S2SV_blank>to<S2SV_blank>select<S2SV_blank>or<S2SV_blank>service<S2SV_blank>ID:\\\\n\" ) ; fflush ( stdin ) ; szOpt [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szOpt ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>OD<S2SV_blank>ID\\\\n\" ) ; break ; } index = atoi ( szOpt ) ; odm = NULL ; root_od = gf_term_get_root_object ( term ) ; if ( root_od ) { if ( gf_term_find_service ( term , root_od , index ) ) { gf_term_select_service ( term , root_od , index ) ; } else { fprintf ( stderr , \"Cannot<S2SV_blank>find<S2SV_blank>service<S2SV_blank>%d<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>with<S2SV_blank>object<S2SV_blank>index\\\\n\" , index ) ; odm = gf_term_get_object ( term , root_od , index ) ; if ( odm ) { gf_term_select_object ( term , odm ) ; } else { fprintf ( stderr , \"Cannot<S2SV_blank>find<S2SV_blank>object<S2SV_blank>at<S2SV_blank>index<S2SV_blank>%d\\\\n\" , index ) ; } } } } break ; case 'h' : PrintHelp ( ) ; break ; default : break ; } } if ( bench_mode ) { PrintAVInfo ( GF_TRUE ) ; } if ( simulation_time_in_ms ) { gf_log_set_strict_error ( 0 ) ; } i = gf_sys_clock ( ) ; gf_term_disconnect ( term ) ; if ( rti_file ) UpdateRTInfo ( \"Disconnected\\\\n\" ) ; fprintf ( stderr , \"Deleting<S2SV_blank>terminal...<S2SV_blank>\" ) ; if ( playlist ) gf_fclose ( playlist ) ; # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) carbon_uninit ( ) ; # endif gf_term_del ( term ) ; fprintf ( stderr , \"done<S2SV_blank>(in<S2SV_blank>%d<S2SV_blank>ms)<S2SV_blank>-<S2SV_blank>ran<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>ms\\\\n\" , gf_sys_clock ( ) - i , gf_sys_clock ( ) ) ; fprintf ( stderr , \"GPAC<S2SV_blank>cleanup<S2SV_blank>...\\\\n\" ) ; gf_modules_del ( user . modules ) ; if ( no_cfg_save ) gf_cfg_discard_changes ( cfg_file ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( rti_logs ) gf_fclose ( rti_logs ) ; if ( logfile ) gf_fclose ( logfile ) ; if ( gui_mode ) { hide_shell ( 2 ) ; } # ifdef GPAC_MEMORY_TRACKING if ( mem_track && ( gf_memory_size ( ) || gf_file_handles_count ( ) ) ) { gf_log_set_tool_level ( GF_LOG_MEMORY , GF_LOG_INFO ) ; gf_memory_print ( ) ; return 2 ; } # endif return ret_val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ sizeof ( the_url <S2SV_ModEnd> ) - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3076\n\n```\nCWE-200 static int hash_recvmsg ( struct kiocb * unused , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct alg_sock * ask = alg_sk ( sk ) ; struct hash_ctx * ctx = ask -> private ; unsigned ds = crypto_ahash_digestsize ( crypto_ahash_reqtfm ( & ctx -> req ) ) ; int err ; if ( len > ds ) len = ds ; else if ( len < ds ) msg -> msg_flags |= MSG_TRUNC ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> if ( ctx -> more ) { ctx -> more = 0 ; ahash_request_set_crypt ( & ctx -> req , NULL , ctx -> result , 0 ) ; err = af_alg_wait_for_completion ( crypto_ahash_final ( & ctx -> req ) , & ctx -> completion ) ; if ( err ) goto unlock ; } err = memcpy_toiovec ( msg -> msg_iov , ctx -> result , len ) ; unlock : release_sock ( sk ) ; return err ? : len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= MSG_TRUNC ; msg -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10675\n\n```\nCWE-416 static long do_get_mempolicy ( int * policy , nodemask_t * nmask , unsigned long addr , unsigned long flags ) { int err ; struct mm_struct * mm = current -> mm ; struct vm_area_struct * vma = NULL ; struct mempolicy * pol = current -> mempolicy ; if ( flags & ~ ( unsigned long ) ( MPOL_F_NODE | MPOL_F_ADDR | MPOL_F_MEMS_ALLOWED ) ) return - EINVAL ; if ( flags & MPOL_F_MEMS_ALLOWED ) { if ( flags & ( MPOL_F_NODE | MPOL_F_ADDR ) ) return - EINVAL ; * policy = 0 ; task_lock ( current ) ; * nmask = cpuset_current_mems_allowed ; task_unlock ( current ) ; return 0 ; } if ( flags & MPOL_F_ADDR ) { down_read ( & mm -> mmap_sem ) ; vma = find_vma_intersection ( mm , addr , addr + 1 ) ; if ( ! vma ) { up_read ( & mm -> mmap_sem ) ; return - EFAULT ; } if ( vma -> vm_ops && vma -> vm_ops -> get_policy ) pol = vma -> vm_ops -> get_policy ( vma , addr ) ; else pol = vma -> vm_policy ; } else if ( addr ) return - EINVAL ; if ( ! pol ) pol = & default_policy ; if ( flags & MPOL_F_NODE ) { if ( flags & MPOL_F_ADDR ) { err = lookup_node ( addr ) ; if ( err < 0 ) goto out ; * policy = err ; } else if ( pol == current -> mempolicy && pol -> mode == MPOL_INTERLEAVE ) { * policy = next_node_in ( current -> il_prev , pol -> v . nodes ) ; } else { err = - EINVAL ; goto out ; } } else { * policy = pol == & default_policy ? MPOL_DEFAULT : pol -> mode ; * policy |= ( pol -> flags & MPOL_MODE_FLAGS ) ; } <S2SV_StartBug> if ( vma ) { <S2SV_EndBug> up_read ( & current -> mm -> mmap_sem ) ; vma = NULL ; } err = 0 ; if ( nmask ) { if ( mpol_store_user_nodemask ( pol ) ) { * nmask = pol -> w . user_nodemask ; } else { task_lock ( current ) ; get_policy_nodemask ( pol , nmask ) ; task_unlock ( current ) ; } } out : mpol_cond_put ( pol ) ; if ( vma ) up_read ( & current -> mm -> mmap_sem ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } <S2SV_ModEnd> err = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imageaffinematrixget ) { double affine [ 6 ] ; long type ; zval * options ; zval * * tmp ; int res = GD_FALSE , i ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"l|z\" , & type , & options ) == FAILURE ) { return ; } switch ( ( gdAffineStandardMatrix ) type ) { case GD_AFFINE_TRANSLATE : case GD_AFFINE_SCALE : { double x , y ; if ( Z_TYPE_P ( options ) != IS_ARRAY ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Array<S2SV_blank>expected<S2SV_blank>as<S2SV_blank>options\" ) ; } if ( zend_hash_find ( HASH_OF ( options ) , \"x\" , sizeof ( \"x\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> convert_to_double_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> x = Z_DVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>x<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( options ) , \"y\" , sizeof ( \"y\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> convert_to_double_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> y = Z_DVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>y<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( type == GD_AFFINE_TRANSLATE ) { res = gdAffineTranslate ( affine , x , y ) ; } else { res = gdAffineScale ( affine , x , y ) ; } break ; } case GD_AFFINE_ROTATE : case GD_AFFINE_SHEAR_HORIZONTAL : case GD_AFFINE_SHEAR_VERTICAL : { double angle ; convert_to_double_ex ( & options ) ; angle = Z_DVAL_P ( options ) ; if ( type == GD_AFFINE_SHEAR_HORIZONTAL ) { res = gdAffineShearHorizontal ( affine , angle ) ; } else if ( type == GD_AFFINE_SHEAR_VERTICAL ) { res = gdAffineShearVertical ( affine , angle ) ; } else { res = gdAffineRotate ( affine , angle ) ; } break ; } default : php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Invalid<S2SV_blank>type<S2SV_blank>for<S2SV_blank>element<S2SV_blank>%li\" , type ) ; RETURN_FALSE ; } if ( res == GD_FALSE ) { RETURN_FALSE ; } else { array_init ( return_value ) ; for ( i = 0 ; i < 6 ; i ++ ) { add_index_double ( return_value , i , affine [ i ] ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_DOUBLE ) { zval dval ; dval = * * tmp ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; x <S2SV_ModStart> ; x = Z_DVAL ( dval ) ; } else { x = <S2SV_ModStart> tmp ) ; } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_DOUBLE ) { zval dval ; dval = * * tmp ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; y <S2SV_ModStart> ; y = Z_DVAL ( dval ) ; } else { y = <S2SV_ModStart> tmp ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15945\n\n```\nCWE-000 void luaV_execute ( lua_State * L , CallInfo * ci ) { LClosure * cl ; TValue * k ; StkId base ; const Instruction * pc ; int trap ; # if LUA_USE_JUMPTABLE # include \"ljumptab.h\" # endif tailcall : trap = L -> hookmask ; cl = clLvalue ( s2v ( ci -> func ) ) ; k = cl -> p -> k ; pc = ci -> u . l . savedpc ; if ( trap ) { if ( cl -> p -> is_vararg ) trap = 0 ; else if ( pc == cl -> p -> code ) luaD_hookcall ( L , ci ) ; ci -> u . l . trap = 1 ; } base = ci -> func + 1 ; for ( ; ; ) { Instruction i ; StkId ra ; vmfetch ( ) ; lua_assert ( base == ci -> func + 1 ) ; lua_assert ( base <= L -> top && L -> top < L -> stack + L -> stacksize ) ; lua_assert ( isIT ( i ) || ( cast_void ( L -> top = base ) , 1 ) ) ; vmdispatch ( GET_OPCODE ( i ) ) { vmcase ( OP_MOVE ) { setobjs2s ( L , ra , RB ( i ) ) ; vmbreak ; } vmcase ( OP_LOADI ) { lua_Integer b = GETARG_sBx ( i ) ; setivalue ( s2v ( ra ) , b ) ; vmbreak ; } vmcase ( OP_LOADF ) { int b = GETARG_sBx ( i ) ; setfltvalue ( s2v ( ra ) , cast_num ( b ) ) ; vmbreak ; } vmcase ( OP_LOADK ) { TValue * rb = k + GETARG_Bx ( i ) ; setobj2s ( L , ra , rb ) ; vmbreak ; } vmcase ( OP_LOADKX ) { TValue * rb ; rb = k + GETARG_Ax ( * pc ) ; pc ++ ; setobj2s ( L , ra , rb ) ; vmbreak ; } vmcase ( OP_LOADFALSE ) { setbfvalue ( s2v ( ra ) ) ; vmbreak ; } vmcase ( OP_LFALSESKIP ) { setbfvalue ( s2v ( ra ) ) ; pc ++ ; vmbreak ; } vmcase ( OP_LOADTRUE ) { setbtvalue ( s2v ( ra ) ) ; vmbreak ; } vmcase ( OP_LOADNIL ) { int b = GETARG_B ( i ) ; do { setnilvalue ( s2v ( ra ++ ) ) ; } while ( b -- ) ; vmbreak ; } vmcase ( OP_GETUPVAL ) { int b = GETARG_B ( i ) ; setobj2s ( L , ra , cl -> upvals [ b ] -> v ) ; vmbreak ; } vmcase ( OP_SETUPVAL ) { UpVal * uv = cl -> upvals [ GETARG_B ( i ) ] ; setobj ( L , uv -> v , s2v ( ra ) ) ; luaC_barrier ( L , uv , s2v ( ra ) ) ; vmbreak ; } vmcase ( OP_GETTABUP ) { const TValue * slot ; TValue * upval = cl -> upvals [ GETARG_B ( i ) ] -> v ; TValue * rc = KC ( i ) ; TString * key = tsvalue ( rc ) ; if ( luaV_fastget ( L , upval , key , slot , luaH_getshortstr ) ) { setobj2s ( L , ra , slot ) ; } else Protect ( luaV_finishget ( L , upval , rc , ra , slot ) ) ; vmbreak ; } vmcase ( OP_GETTABLE ) { const TValue * slot ; TValue * rb = vRB ( i ) ; TValue * rc = vRC ( i ) ; lua_Unsigned n ; if ( ttisinteger ( rc ) ? ( cast_void ( n = ivalue ( rc ) ) , luaV_fastgeti ( L , rb , n , slot ) ) : luaV_fastget ( L , rb , rc , slot , luaH_get ) ) { setobj2s ( L , ra , slot ) ; } else Protect ( luaV_finishget ( L , rb , rc , ra , slot ) ) ; vmbreak ; } vmcase ( OP_GETI ) { const TValue * slot ; TValue * rb = vRB ( i ) ; int c = GETARG_C ( i ) ; if ( luaV_fastgeti ( L , rb , c , slot ) ) { setobj2s ( L , ra , slot ) ; } else { TValue key ; setivalue ( & key , c ) ; Protect ( luaV_finishget ( L , rb , & key , ra , slot ) ) ; } vmbreak ; } vmcase ( OP_GETFIELD ) { const TValue * slot ; TValue * rb = vRB ( i ) ; TValue * rc = KC ( i ) ; TString * key = tsvalue ( rc ) ; if ( luaV_fastget ( L , rb , key , slot , luaH_getshortstr ) ) { setobj2s ( L , ra , slot ) ; } else Protect ( luaV_finishget ( L , rb , rc , ra , slot ) ) ; vmbreak ; } vmcase ( OP_SETTABUP ) { const TValue * slot ; TValue * upval = cl -> upvals [ GETARG_A ( i ) ] -> v ; TValue * rb = KB ( i ) ; TValue * rc = RKC ( i ) ; TString * key = tsvalue ( rb ) ; if ( luaV_fastget ( L , upval , key , slot , luaH_getshortstr ) ) { luaV_finishfastset ( L , upval , slot , rc ) ; } else Protect ( luaV_finishset ( L , upval , rb , rc , slot ) ) ; vmbreak ; } vmcase ( OP_SETTABLE ) { const TValue * slot ; TValue * rb = vRB ( i ) ; TValue * rc = RKC ( i ) ; lua_Unsigned n ; if ( ttisinteger ( rb ) ? ( cast_void ( n = ivalue ( rb ) ) , luaV_fastgeti ( L , s2v ( ra ) , n , slot ) ) : luaV_fastget ( L , s2v ( ra ) , rb , slot , luaH_get ) ) { luaV_finishfastset ( L , s2v ( ra ) , slot , rc ) ; } else Protect ( luaV_finishset ( L , s2v ( ra ) , rb , rc , slot ) ) ; vmbreak ; } vmcase ( OP_SETI ) { const TValue * slot ; int c = GETARG_B ( i ) ; TValue * rc = RKC ( i ) ; if ( luaV_fastgeti ( L , s2v ( ra ) , c , slot ) ) { luaV_finishfastset ( L , s2v ( ra ) , slot , rc ) ; } else { TValue key ; setivalue ( & key , c ) ; Protect ( luaV_finishset ( L , s2v ( ra ) , & key , rc , slot ) ) ; } vmbreak ; } vmcase ( OP_SETFIELD ) { const TValue * slot ; TValue * rb = KB ( i ) ; TValue * rc = RKC ( i ) ; TString * key = tsvalue ( rb ) ; if ( luaV_fastget ( L , s2v ( ra ) , key , slot , luaH_getshortstr ) ) { luaV_finishfastset ( L , s2v ( ra ) , slot , rc ) ; } else Protect ( luaV_finishset ( L , s2v ( ra ) , rb , rc , slot ) ) ; vmbreak ; } vmcase ( OP_NEWTABLE ) { int b = GETARG_B ( i ) ; int c = GETARG_C ( i ) ; Table * t ; if ( b > 0 ) b = 1 << ( b - 1 ) ; lua_assert ( ( ! TESTARG_k ( i ) ) == ( GETARG_Ax ( * pc ) == 0 ) ) ; if ( TESTARG_k ( i ) ) c += GETARG_Ax ( * pc ) * ( MAXARG_C + 1 ) ; pc ++ ; L -> top = ra + 1 ; t = luaH_new ( L ) ; sethvalue2s ( L , ra , t ) ; if ( b != 0 || c != 0 ) luaH_resize ( L , t , c , b ) ; checkGC ( L , ra + 1 ) ; vmbreak ; } vmcase ( OP_SELF ) { const TValue * slot ; TValue * rb = vRB ( i ) ; TValue * rc = RKC ( i ) ; TString * key = tsvalue ( rc ) ; setobj2s ( L , ra + 1 , rb ) ; if ( luaV_fastget ( L , rb , key , slot , luaH_getstr ) ) { setobj2s ( L , ra , slot ) ; } else Protect ( luaV_finishget ( L , rb , rc , ra , slot ) ) ; vmbreak ; } vmcase ( OP_ADDI ) { op_arithI ( L , l_addi , luai_numadd ) ; vmbreak ; } vmcase ( OP_ADDK ) { op_arithK ( L , l_addi , luai_numadd ) ; vmbreak ; } vmcase ( OP_SUBK ) { op_arithK ( L , l_subi , luai_numsub ) ; vmbreak ; } vmcase ( OP_MULK ) { op_arithK ( L , l_muli , luai_nummul ) ; vmbreak ; } vmcase ( OP_MODK ) { op_arithK ( L , luaV_mod , luaV_modf ) ; vmbreak ; } vmcase ( OP_POWK ) { op_arithfK ( L , luai_numpow ) ; vmbreak ; } vmcase ( OP_DIVK ) { op_arithfK ( L , luai_numdiv ) ; vmbreak ; } vmcase ( OP_IDIVK ) { op_arithK ( L , luaV_idiv , luai_numidiv ) ; vmbreak ; } vmcase ( OP_BANDK ) { op_bitwiseK ( L , l_band ) ; vmbreak ; } vmcase ( OP_BORK ) { op_bitwiseK ( L , l_bor ) ; vmbreak ; } vmcase ( OP_BXORK ) { op_bitwiseK ( L , l_bxor ) ; vmbreak ; } vmcase ( OP_SHRI ) { TValue * rb = vRB ( i ) ; int ic = GETARG_sC ( i ) ; lua_Integer ib ; if ( tointegerns ( rb , & ib ) ) { pc ++ ; setivalue ( s2v ( ra ) , luaV_shiftl ( ib , - ic ) ) ; } vmbreak ; } vmcase ( OP_SHLI ) { TValue * rb = vRB ( i ) ; int ic = GETARG_sC ( i ) ; lua_Integer ib ; if ( tointegerns ( rb , & ib ) ) { pc ++ ; setivalue ( s2v ( ra ) , luaV_shiftl ( ic , ib ) ) ; } vmbreak ; } vmcase ( OP_ADD ) { op_arith ( L , l_addi , luai_numadd ) ; vmbreak ; } vmcase ( OP_SUB ) { op_arith ( L , l_subi , luai_numsub ) ; vmbreak ; } vmcase ( OP_MUL ) { op_arith ( L , l_muli , luai_nummul ) ; vmbreak ; } vmcase ( OP_MOD ) { op_arith ( L , luaV_mod , luaV_modf ) ; vmbreak ; } vmcase ( OP_POW ) { op_arithf ( L , luai_numpow ) ; vmbreak ; } vmcase ( OP_DIV ) { op_arithf ( L , luai_numdiv ) ; vmbreak ; } vmcase ( OP_IDIV ) { op_arith ( L , luaV_idiv , luai_numidiv ) ; vmbreak ; } vmcase ( OP_BAND ) { op_bitwise ( L , l_band ) ; vmbreak ; } vmcase ( OP_BOR ) { op_bitwise ( L , l_bor ) ; vmbreak ; } vmcase ( OP_BXOR ) { op_bitwise ( L , l_bxor ) ; vmbreak ; } vmcase ( OP_SHR ) { op_bitwise ( L , luaV_shiftr ) ; vmbreak ; } vmcase ( OP_SHL ) { op_bitwise ( L , luaV_shiftl ) ; vmbreak ; } vmcase ( OP_MMBIN ) { Instruction pi = * ( pc - 2 ) ; TValue * rb = vRB ( i ) ; TMS tm = ( TMS ) GETARG_C ( i ) ; StkId result = RA ( pi ) ; lua_assert ( OP_ADD <= GET_OPCODE ( pi ) && GET_OPCODE ( pi ) <= OP_SHR ) ; Protect ( luaT_trybinTM ( L , s2v ( ra ) , rb , result , tm ) ) ; vmbreak ; } vmcase ( OP_MMBINI ) { Instruction pi = * ( pc - 2 ) ; int imm = GETARG_sB ( i ) ; TMS tm = ( TMS ) GETARG_C ( i ) ; int flip = GETARG_k ( i ) ; StkId result = RA ( pi ) ; Protect ( luaT_trybiniTM ( L , s2v ( ra ) , imm , flip , result , tm ) ) ; vmbreak ; } vmcase ( OP_MMBINK ) { Instruction pi = * ( pc - 2 ) ; TValue * imm = KB ( i ) ; TMS tm = ( TMS ) GETARG_C ( i ) ; int flip = GETARG_k ( i ) ; StkId result = RA ( pi ) ; Protect ( luaT_trybinassocTM ( L , s2v ( ra ) , imm , flip , result , tm ) ) ; vmbreak ; } vmcase ( OP_UNM ) { TValue * rb = vRB ( i ) ; lua_Number nb ; if ( ttisinteger ( rb ) ) { lua_Integer ib = ivalue ( rb ) ; setivalue ( s2v ( ra ) , intop ( - , 0 , ib ) ) ; } else if ( tonumberns ( rb , nb ) ) { setfltvalue ( s2v ( ra ) , luai_numunm ( L , nb ) ) ; } else Protect ( luaT_trybinTM ( L , rb , rb , ra , TM_UNM ) ) ; vmbreak ; } vmcase ( OP_BNOT ) { TValue * rb = vRB ( i ) ; lua_Integer ib ; if ( tointegerns ( rb , & ib ) ) { setivalue ( s2v ( ra ) , intop ( ^ , ~ l_castS2U ( 0 ) , ib ) ) ; } else Protect ( luaT_trybinTM ( L , rb , rb , ra , TM_BNOT ) ) ; vmbreak ; } vmcase ( OP_NOT ) { TValue * rb = vRB ( i ) ; if ( l_isfalse ( rb ) ) setbtvalue ( s2v ( ra ) ) ; else setbfvalue ( s2v ( ra ) ) ; vmbreak ; } vmcase ( OP_LEN ) { Protect ( luaV_objlen ( L , ra , vRB ( i ) ) ) ; vmbreak ; } vmcase ( OP_CONCAT ) { int n = GETARG_B ( i ) ; L -> top = ra + n ; ProtectNT ( luaV_concat ( L , n ) ) ; checkGC ( L , L -> top ) ; vmbreak ; } vmcase ( OP_CLOSE ) { Protect ( luaF_close ( L , ra , LUA_OK ) ) ; vmbreak ; } vmcase ( OP_TBC ) { halfProtect ( luaF_newtbcupval ( L , ra ) ) ; vmbreak ; } vmcase ( OP_JMP ) { dojump ( ci , i , 0 ) ; vmbreak ; } vmcase ( OP_EQ ) { int cond ; TValue * rb = vRB ( i ) ; Protect ( cond = luaV_equalobj ( L , s2v ( ra ) , rb ) ) ; docondjump ( ) ; vmbreak ; } vmcase ( OP_LT ) { op_order ( L , l_lti , LTnum , lessthanothers ) ; vmbreak ; } vmcase ( OP_LE ) { op_order ( L , l_lei , LEnum , lessequalothers ) ; vmbreak ; } vmcase ( OP_EQK ) { TValue * rb = KB ( i ) ; int cond = luaV_rawequalobj ( s2v ( ra ) , rb ) ; docondjump ( ) ; vmbreak ; } vmcase ( OP_EQI ) { int cond ; int im = GETARG_sB ( i ) ; if ( ttisinteger ( s2v ( ra ) ) ) cond = ( ivalue ( s2v ( ra ) ) == im ) ; else if ( ttisfloat ( s2v ( ra ) ) ) cond = luai_numeq ( fltvalue ( s2v ( ra ) ) , cast_num ( im ) ) ; else cond = 0 ; docondjump ( ) ; vmbreak ; } vmcase ( OP_LTI ) { op_orderI ( L , l_lti , luai_numlt , 0 , TM_LT ) ; vmbreak ; } vmcase ( OP_LEI ) { op_orderI ( L , l_lei , luai_numle , 0 , TM_LE ) ; vmbreak ; } vmcase ( OP_GTI ) { op_orderI ( L , l_gti , luai_numgt , 1 , TM_LT ) ; vmbreak ; } vmcase ( OP_GEI ) { op_orderI ( L , l_gei , luai_numge , 1 , TM_LE ) ; vmbreak ; } vmcase ( OP_TEST ) { int cond = ! l_isfalse ( s2v ( ra ) ) ; docondjump ( ) ; vmbreak ; } vmcase ( OP_TESTSET ) { TValue * rb = vRB ( i ) ; if ( l_isfalse ( rb ) == GETARG_k ( i ) ) pc ++ ; else { setobj2s ( L , ra , rb ) ; donextjump ( ci ) ; } vmbreak ; } vmcase ( OP_CALL ) { int b = GETARG_B ( i ) ; int nresults = GETARG_C ( i ) - 1 ; if ( b != 0 ) L -> top = ra + b ; ProtectNT ( luaD_call ( L , ra , nresults ) ) ; vmbreak ; } vmcase ( OP_TAILCALL ) { int b = GETARG_B ( i ) ; int nparams1 = GETARG_C ( i ) ; int delta = ( nparams1 ) ? ci -> u . l . nextraargs + nparams1 : 0 ; if ( b != 0 ) L -> top = ra + b ; else b = cast_int ( L -> top - ra ) ; savepc ( ci ) ; if ( TESTARG_k ( i ) ) { luaF_close ( L , base , NOCLOSINGMETH ) ; lua_assert ( base == ci -> func + 1 ) ; } while ( ! ttisfunction ( s2v ( ra ) ) ) { luaD_tryfuncTM ( L , ra ) ; b ++ ; checkstackGCp ( L , 1 , ra ) ; } if ( ! ttisLclosure ( s2v ( ra ) ) ) { luaD_call ( L , ra , LUA_MULTRET ) ; updatetrap ( ci ) ; updatestack ( ci ) ; ci -> func -= delta ; luaD_poscall ( L , ci , cast_int ( L -> top - ra ) ) ; return ; } ci -> func -= delta ; luaD_pretailcall ( L , ci , ra , b ) ; goto tailcall ; } vmcase ( OP_RETURN ) { int n = GETARG_B ( i ) - 1 ; int nparams1 = GETARG_C ( i ) ; if ( n < 0 ) n = cast_int ( L -> top - ra ) ; savepc ( ci ) ; if ( TESTARG_k ( i ) ) { if ( L -> top < ci -> top ) L -> top = ci -> top ; luaF_close ( L , base , LUA_OK ) ; updatetrap ( ci ) ; updatestack ( ci ) ; } if ( nparams1 ) ci -> func -= ci -> u . l . nextraargs + nparams1 ; L -> top = ra + n ; luaD_poscall ( L , ci , n ) ; return ; } vmcase ( OP_RETURN0 ) { if ( L -> hookmask ) { L -> top = ra ; halfProtectNT ( luaD_poscall ( L , ci , 0 ) ) ; } else { int nres = ci -> nresults ; L -> ci = ci -> previous ; L -> top = base - 1 ; while ( nres -- > 0 ) setnilvalue ( s2v ( L -> top ++ ) ) ; } return ; } vmcase ( OP_RETURN1 ) { if ( L -> hookmask ) { L -> top = ra + 1 ; halfProtectNT ( luaD_poscall ( L , ci , 1 ) ) ; } else { int nres = ci -> nresults ; L -> ci = ci -> previous ; if ( nres == 0 ) L -> top = base - 1 ; else { setobjs2s ( L , base - 1 , ra ) ; L -> top = base ; while ( -- nres > 0 ) setnilvalue ( s2v ( L -> top ++ ) ) ; } } return ; } vmcase ( OP_FORLOOP ) { if ( ttisinteger ( s2v ( ra + 2 ) ) ) { lua_Unsigned count = l_castS2U ( ivalue ( s2v ( ra + 1 ) ) ) ; if ( count > 0 ) { lua_Integer step = ivalue ( s2v ( ra + 2 ) ) ; lua_Integer idx = ivalue ( s2v ( ra ) ) ; chgivalue ( s2v ( ra + 1 ) , count - 1 ) ; idx = intop ( + , idx , step ) ; chgivalue ( s2v ( ra ) , idx ) ; setivalue ( s2v ( ra + 3 ) , idx ) ; pc -= GETARG_Bx ( i ) ; } } else if ( floatforloop ( ra ) ) pc -= GETARG_Bx ( i ) ; updatetrap ( ci ) ; vmbreak ; } vmcase ( OP_FORPREP ) { savestate ( L , ci ) ; if ( forprep ( L , ra ) ) pc += GETARG_Bx ( i ) + 1 ; vmbreak ; } vmcase ( OP_TFORPREP ) { halfProtect ( luaF_newtbcupval ( L , ra + 3 ) ) ; pc += GETARG_Bx ( i ) ; i = * ( pc ++ ) ; lua_assert ( GET_OPCODE ( i ) == OP_TFORCALL && ra == RA ( i ) ) ; goto l_tforcall ; } vmcase ( OP_TFORCALL ) { l_tforcall : memcpy ( ra + 4 , ra , 3 * sizeof ( * ra ) ) ; L -> top = ra + 4 + 3 ; ProtectNT ( luaD_call ( L , ra + 4 , GETARG_C ( i ) ) ) ; updatestack ( ci ) ; i = * ( pc ++ ) ; lua_assert ( GET_OPCODE ( i ) == OP_TFORLOOP && ra == RA ( i ) ) ; goto l_tforloop ; } vmcase ( OP_TFORLOOP ) { l_tforloop : if ( ! ttisnil ( s2v ( ra + 4 ) ) ) { setobjs2s ( L , ra + 2 , ra + 4 ) ; pc -= GETARG_Bx ( i ) ; } vmbreak ; } vmcase ( OP_SETLIST ) { int n = GETARG_B ( i ) ; unsigned int last = GETARG_C ( i ) ; Table * h = hvalue ( s2v ( ra ) ) ; if ( n == 0 ) n = cast_int ( L -> top - ra ) - 1 ; else L -> top = ci -> top ; last += n ; if ( TESTARG_k ( i ) ) { last += GETARG_Ax ( * pc ) * ( MAXARG_C + 1 ) ; pc ++ ; } if ( last > luaH_realasize ( h ) ) luaH_resizearray ( L , h , last ) ; for ( ; n > 0 ; n -- ) { TValue * val = s2v ( ra + n ) ; setobj2t ( L , & h -> array [ last - 1 ] , val ) ; last -- ; luaC_barrierback ( L , obj2gco ( h ) , val ) ; } vmbreak ; } vmcase ( OP_CLOSURE ) { Proto * p = cl -> p -> p [ GETARG_Bx ( i ) ] ; halfProtect ( pushclosure ( L , p , cl -> upvals , base , ra ) ) ; checkGC ( L , ra + 1 ) ; vmbreak ; } vmcase ( OP_VARARG ) { int n = GETARG_C ( i ) - 1 ; Protect ( luaT_getvarargs ( L , ci , ra , n ) ) ; vmbreak ; } vmcase ( OP_VARARGPREP ) { ProtectNT ( luaT_adjustvarargs ( L , GETARG_A ( i ) , ci , cl -> p ) ) ; if ( trap ) { luaD_hookcall ( L , ci ) ; <S2SV_StartBug> L -> oldpc = pc + 1 ; <S2SV_EndBug> } updatebase ( ci ) ; vmbreak ; } vmcase ( OP_EXTRAARG ) { lua_assert ( 0 ) ; vmbreak ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> oldpc = <S2SV_ModEnd> 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int http_connect ( URLContext * h , const char * path , const char * local_path , const char * hoststr , const char * auth , const char * proxyauth , int * new_location ) { HTTPContext * s = h -> priv_data ; int post , err ; char headers [ HTTP_HEADERS_SIZE ] = \"\" ; char * authstr = NULL , * proxyauthstr = NULL ; <S2SV_StartBug> int64_t off = s -> off ; <S2SV_EndBug> int len = 0 ; const char * method ; int send_expect_100 = 0 ; post = h -> flags & AVIO_FLAG_WRITE ; if ( s -> post_data ) { post = 1 ; s -> chunked_post = 0 ; } if ( s -> method ) method = s -> method ; else method = post ? \"POST\" : \"GET\" ; authstr = ff_http_auth_create_response ( & s -> auth_state , auth , local_path , method ) ; proxyauthstr = ff_http_auth_create_response ( & s -> proxy_auth_state , proxyauth , local_path , method ) ; if ( post && ! s -> post_data ) { send_expect_100 = s -> send_expect_100 ; if ( auth && * auth && s -> auth_state . auth_type == HTTP_AUTH_NONE && s -> http_code != 401 ) send_expect_100 = 1 ; } # if FF_API_HTTP_USER_AGENT if ( strcmp ( s -> user_agent_deprecated , DEFAULT_USER_AGENT ) ) { av_log ( s , AV_LOG_WARNING , \"the<S2SV_blank>user-agent<S2SV_blank>option<S2SV_blank>is<S2SV_blank>deprecated,<S2SV_blank>please<S2SV_blank>use<S2SV_blank>user_agent<S2SV_blank>option\\\\n\" ) ; s -> user_agent = av_strdup ( s -> user_agent_deprecated ) ; } # endif if ( ! has_header ( s -> headers , \"\\\\r\\\\nUser-Agent:<S2SV_blank>\" ) ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"User-Agent:<S2SV_blank>%s\\\\r\\\\n\" , s -> user_agent ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nAccept:<S2SV_blank>\" ) ) len += av_strlcpy ( headers + len , \"Accept:<S2SV_blank>*/*\\\\r\\\\n\" , sizeof ( headers ) - len ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nRange:<S2SV_blank>\" ) && ! post && ( s -> off > 0 || s -> end_off || s -> seekable == - 1 ) ) { len += av_strlcatf ( headers + len , sizeof ( headers ) - len , <S2SV_StartBug> \"Range:<S2SV_blank>bytes=%\" PRId64 \"-\" , s -> off ) ; <S2SV_EndBug> if ( s -> end_off ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"%\" PRId64 , s -> end_off - 1 ) ; len += av_strlcpy ( headers + len , \"\\\\r\\\\n\" , sizeof ( headers ) - len ) ; } if ( send_expect_100 && ! has_header ( s -> headers , \"\\\\r\\\\nExpect:<S2SV_blank>\" ) ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Expect:<S2SV_blank>100-continue\\\\r\\\\n\" ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nConnection:<S2SV_blank>\" ) ) { if ( s -> multiple_requests ) len += av_strlcpy ( headers + len , \"Connection:<S2SV_blank>keep-alive\\\\r\\\\n\" , sizeof ( headers ) - len ) ; else len += av_strlcpy ( headers + len , \"Connection:<S2SV_blank>close\\\\r\\\\n\" , sizeof ( headers ) - len ) ; } if ( ! has_header ( s -> headers , \"\\\\r\\\\nHost:<S2SV_blank>\" ) ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Host:<S2SV_blank>%s\\\\r\\\\n\" , hoststr ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nContent-Length:<S2SV_blank>\" ) && s -> post_data ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Content-Length:<S2SV_blank>%d\\\\r\\\\n\" , s -> post_datalen ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nContent-Type:<S2SV_blank>\" ) && s -> content_type ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Content-Type:<S2SV_blank>%s\\\\r\\\\n\" , s -> content_type ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nCookie:<S2SV_blank>\" ) && s -> cookies ) { char * cookies = NULL ; if ( ! get_cookies ( s , & cookies , path , hoststr ) && cookies ) { len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Cookie:<S2SV_blank>%s\\\\r\\\\n\" , cookies ) ; av_free ( cookies ) ; } } if ( ! has_header ( s -> headers , \"\\\\r\\\\nIcy-MetaData:<S2SV_blank>\" ) && s -> icy ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Icy-MetaData:<S2SV_blank>%d\\\\r\\\\n\" , 1 ) ; if ( s -> headers ) av_strlcpy ( headers + len , s -> headers , sizeof ( headers ) - len ) ; snprintf ( s -> buffer , sizeof ( s -> buffer ) , \"%s<S2SV_blank>%s<S2SV_blank>HTTP/1.1\\\\r\\\\n\" \"%s\" \"%s\" \"%s\" \"%s%s\" \"\\\\r\\\\n\" , method , path , post && s -> chunked_post ? \"Transfer-Encoding:<S2SV_blank>chunked\\\\r\\\\n\" : \"\" , headers , authstr ? authstr : \"\" , proxyauthstr ? \"Proxy-\" : \"\" , proxyauthstr ? proxyauthstr : \"\" ) ; av_log ( h , AV_LOG_DEBUG , \"request:<S2SV_blank>%s\\\\n\" , s -> buffer ) ; if ( ( err = ffurl_write ( s -> hd , s -> buffer , strlen ( s -> buffer ) ) ) < 0 ) goto done ; if ( s -> post_data ) if ( ( err = ffurl_write ( s -> hd , s -> post_data , s -> post_datalen ) ) < 0 ) goto done ; s -> buf_ptr = s -> buffer ; s -> buf_end = s -> buffer ; s -> line_count = 0 ; s -> off = 0 ; s -> icy_data_read = 0 ; <S2SV_StartBug> s -> filesize = - 1 ; <S2SV_EndBug> s -> willclose = 0 ; s -> end_chunked_post = 0 ; s -> end_header = 0 ; if ( post && ! s -> post_data && ! send_expect_100 ) { s -> http_code = 200 ; err = 0 ; goto done ; } err = http_read_header ( h , new_location ) ; if ( err < 0 ) goto done ; if ( * new_location ) s -> off = off ; err = ( off == s -> off ) ? 0 : - 1 ; done : av_freep ( & authstr ) ; av_freep ( & proxyauthstr ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; uint64_t <S2SV_ModEnd> off = s <S2SV_ModStart> len , \"Range:<S2SV_blank>bytes=%\" PRIu64 <S2SV_ModEnd> \"-\" , s <S2SV_ModStart> -> filesize = UINT64_MAX <S2SV_ModEnd> ; s ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jas_image_t * jas_image_create ( int numcmpts , jas_image_cmptparm_t * cmptparms , int clrspc ) { jas_image_t * image ; <S2SV_StartBug> uint_fast32_t rawsize ; <S2SV_EndBug> uint_fast32_t inmem ; int cmptno ; jas_image_cmptparm_t * cmptparm ; <S2SV_StartBug> if ( ! ( image = jas_image_create0 ( ) ) ) { <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> } image -> clrspc_ = clrspc ; image -> maxcmpts_ = numcmpts ; <S2SV_StartBug> image -> inmem_ = true ; <S2SV_EndBug> if ( ! ( image -> cmpts_ = jas_alloc2 ( image -> maxcmpts_ , sizeof ( jas_image_cmpt_t * ) ) ) ) { <S2SV_StartBug> jas_image_destroy ( image ) ; <S2SV_EndBug> return 0 ; } for ( cmptno = 0 ; cmptno < image -> maxcmpts_ ; ++ cmptno ) { image -> cmpts_ [ cmptno ] = 0 ; <S2SV_StartBug> } <S2SV_EndBug> rawsize = 0 ; for ( cmptno = 0 , cmptparm = cmptparms ; cmptno < numcmpts ; ++ cmptno , ++ cmptparm ) { rawsize += cmptparm -> width * cmptparm -> height * ( cmptparm -> prec + 7 ) / 8 ; } inmem = ( rawsize < JAS_IMAGE_INMEMTHRESH ) ; <S2SV_StartBug> for ( cmptno = 0 , cmptparm = cmptparms ; cmptno < numcmpts ; ++ cmptno , <S2SV_EndBug> <S2SV_StartBug> ++ cmptparm ) { <S2SV_EndBug> if ( ! ( image -> cmpts_ [ cmptno ] = jas_image_cmpt_create ( cmptparm -> tlx , cmptparm -> tly , cmptparm -> hstep , cmptparm -> vstep , cmptparm -> width , cmptparm -> height , cmptparm -> prec , cmptparm -> sgnd , inmem ) ) ) { <S2SV_StartBug> jas_image_destroy ( image ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> } <S2SV_StartBug> ++ image -> numcmpts_ ; <S2SV_EndBug> } jas_image_setbbox ( image ) ; return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * image ; size_t <S2SV_ModEnd> rawsize ; uint_fast32_t <S2SV_ModStart> * cmptparm ; image = 0 ; JAS_DBGLOG ( 100 , ( \"jas_image_create(%d,<S2SV_blank>%p,<S2SV_blank>%d)\\\\n\" , numcmpts , cmptparms , clrspc ) ) ; <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } image <S2SV_ModStart> = numcmpts ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } for <S2SV_ModStart> 0 ; } # if 0 <S2SV_ModStart> JAS_IMAGE_INMEMTHRESH ) ; # endif <S2SV_ModStart> cmptparm ) { if ( ! jas_safe_size_mul3 ( cmptparm -> width , cmptparm -> height , ( cmptparm -> prec + 7 ) , & rawsize ) ) { goto error ; } rawsize /= 8 ; inmem = ( rawsize < JAS_IMAGE_INMEMTHRESH ) ; <S2SV_ModStart> ) ) { goto error ; } ++ image -> numcmpts_ ; } jas_image_setbbox ( image ) ; return image ; error : if ( image ) { <S2SV_ModStart> image ) ; } <S2SV_ModStart> 0 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 static int jp2_cmap_getdata ( jp2_box_t * box , jas_stream_t * in ) { jp2_cmap_t * cmap = & box -> data . cmap ; jp2_cmapent_t * ent ; <S2SV_StartBug> unsigned int i ; <S2SV_EndBug> cmap -> numchans = ( box -> datalen ) / 4 ; if ( ! ( cmap -> ents = jas_alloc2 ( cmap -> numchans , sizeof ( jp2_cmapent_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < cmap -> numchans ; ++ i ) { ent = & cmap -> ents [ i ] ; if ( jp2_getuint16 ( in , & ent -> cmptno ) || jp2_getuint8 ( in , & ent -> map ) || jp2_getuint8 ( in , & ent -> pcol ) ) { return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int i ; cmap -> ents = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11171\n\n```\nCWE-835 static void gsm_xsmp_client_disconnect ( GsmXSMPClient * client ) { if ( client -> priv -> watch_id > 0 ) { g_source_remove ( client -> priv -> watch_id ) ; } if ( client -> priv -> conn != NULL ) { SmsCleanUp ( client -> priv -> conn ) ; } if ( client -> priv -> ice_connection != NULL ) { IceSetShutdownNegotiation ( client -> priv -> ice_connection , FALSE ) ; IceCloseConnection ( client -> priv -> ice_connection ) ; } <S2SV_StartBug> if ( client -> priv -> protocol_timeout > 0 ) { <S2SV_EndBug> g_source_remove ( client -> priv -> protocol_timeout ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void init_buffer_callbacks ( vpx_codec_alg_priv_t * ctx ) { <S2SV_StartBug> VP9_COMMON * const cm = & ctx -> pbi -> common ; <S2SV_EndBug> <S2SV_StartBug> cm -> new_fb_idx = - 1 ; <S2SV_EndBug> if ( ctx -> get_ext_fb_cb != NULL && ctx -> release_ext_fb_cb != NULL ) { <S2SV_StartBug> cm -> get_fb_cb = ctx -> get_ext_fb_cb ; <S2SV_EndBug> <S2SV_StartBug> cm -> release_fb_cb = ctx -> release_ext_fb_cb ; <S2SV_EndBug> <S2SV_StartBug> cm -> cb_priv = ctx -> ext_priv ; <S2SV_EndBug> } else { <S2SV_StartBug> cm -> get_fb_cb = vp9_get_frame_buffer ; <S2SV_EndBug> <S2SV_StartBug> cm -> release_fb_cb = vp9_release_frame_buffer ; <S2SV_EndBug> <S2SV_StartBug> if ( vp9_alloc_internal_frame_buffers ( & cm -> int_frame_buffers ) ) <S2SV_EndBug> vpx_internal_error ( & cm -> error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>internal<S2SV_blank>frame<S2SV_blank>buffers\" ) ; <S2SV_StartBug> cm -> cb_priv = & cm -> int_frame_buffers ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx ) { int i ; for ( i = 0 ; i < ctx -> num_frame_workers ; ++ i ) { VPxWorker * const worker = & ctx -> frame_workers [ i ] ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; <S2SV_ModStart> cm = & frame_worker_data <S2SV_ModEnd> -> pbi -> <S2SV_ModStart> -> common ; BufferPool * const pool = cm -> buffer_pool ; <S2SV_ModStart> -> new_fb_idx = INVALID_IDX ; cm -> byte_alignment = ctx -> byte_alignment ; cm -> skip_loop_filter = ctx -> skip_loop_filter <S2SV_ModEnd> ; if ( <S2SV_ModStart> NULL ) { pool <S2SV_ModEnd> -> get_fb_cb = <S2SV_ModStart> -> get_ext_fb_cb ; pool <S2SV_ModEnd> -> release_fb_cb = <S2SV_ModStart> -> release_ext_fb_cb ; pool <S2SV_ModEnd> -> cb_priv = <S2SV_ModStart> } else { pool <S2SV_ModEnd> -> get_fb_cb = <S2SV_ModStart> = vp9_get_frame_buffer ; pool <S2SV_ModEnd> -> release_fb_cb = <S2SV_ModStart> vp9_alloc_internal_frame_buffers ( & pool <S2SV_ModEnd> -> int_frame_buffers ) <S2SV_ModStart> \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>internal<S2SV_blank>frame<S2SV_blank>buffers\" ) ; pool <S2SV_ModEnd> -> cb_priv = <S2SV_ModStart> cb_priv = & pool <S2SV_ModEnd> -> int_frame_buffers ; <S2SV_ModStart> ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 <S2SV_StartBug> static int udf_translate_to_linux ( uint8_t * newName , uint8_t * udfName , <S2SV_EndBug> <S2SV_StartBug> int udfLen , uint8_t * fidName , <S2SV_EndBug> int fidNameLen ) { int index , newIndex = 0 , needsCRC = 0 ; int extIndex = 0 , newExtIndex = 0 , hasExt = 0 ; unsigned short valueCRC ; uint8_t curr ; if ( udfName [ 0 ] == '.' && ( udfLen == 1 || ( udfLen == 2 && udfName [ 1 ] == '.' ) ) ) { needsCRC = 1 ; newIndex = udfLen ; memcpy ( newName , udfName , udfLen ) ; } else { for ( index = 0 ; index < udfLen ; index ++ ) { curr = udfName [ index ] ; if ( curr == '/' || curr == 0 ) { needsCRC = 1 ; curr = ILLEGAL_CHAR_MARK ; while ( index + 1 < udfLen && ( udfName [ index + 1 ] == '/' || udfName [ index + 1 ] == 0 ) ) index ++ ; } if ( curr == EXT_MARK && ( udfLen - index - 1 ) <= EXT_SIZE ) { if ( udfLen == index + 1 ) hasExt = 0 ; else { hasExt = 1 ; extIndex = index ; newExtIndex = newIndex ; } } <S2SV_StartBug> if ( newIndex < 256 ) <S2SV_EndBug> newName [ newIndex ++ ] = curr ; else needsCRC = 1 ; } } if ( needsCRC ) { uint8_t ext [ EXT_SIZE ] ; int localExtIndex = 0 ; if ( hasExt ) { int maxFilenameLen ; for ( index = 0 ; index < EXT_SIZE && extIndex + index + 1 < udfLen ; index ++ ) { curr = udfName [ extIndex + index + 1 ] ; if ( curr == '/' || curr == 0 ) { needsCRC = 1 ; curr = ILLEGAL_CHAR_MARK ; while ( extIndex + index + 2 < udfLen && ( index + 1 < EXT_SIZE && ( udfName [ extIndex + index + 2 ] == '/' || udfName [ extIndex + index + 2 ] == 0 ) ) ) index ++ ; } ext [ localExtIndex ++ ] = curr ; } <S2SV_StartBug> maxFilenameLen = 250 - localExtIndex ; <S2SV_EndBug> if ( newIndex > maxFilenameLen ) newIndex = maxFilenameLen ; else newIndex = newExtIndex ; <S2SV_StartBug> } else if ( newIndex > 250 ) <S2SV_EndBug> newIndex = 250 ; newName [ newIndex ++ ] = CRC_MARK ; valueCRC = crc_itu_t ( 0 , fidName , fidNameLen ) ; newName [ newIndex ++ ] = hex_asc_upper_hi ( valueCRC >> 8 ) ; newName [ newIndex ++ ] = hex_asc_upper_lo ( valueCRC >> 8 ) ; newName [ newIndex ++ ] = hex_asc_upper_hi ( valueCRC ) ; newName [ newIndex ++ ] = hex_asc_upper_lo ( valueCRC ) ; if ( hasExt ) { newName [ newIndex ++ ] = EXT_MARK ; for ( index = 0 ; index < localExtIndex ; index ++ ) newName [ newIndex ++ ] = ext [ index ] ; } } return newIndex ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * newName , int newLen , <S2SV_ModStart> * udfName , int udfLen , <S2SV_ModEnd> uint8_t * fidName <S2SV_ModStart> ( newIndex < newLen <S2SV_ModEnd> ) newName [ <S2SV_ModStart> } maxFilenameLen = newLen - CRC_LEN <S2SV_ModEnd> - localExtIndex ; <S2SV_ModStart> ( newIndex > newLen - CRC_LEN ) newIndex = newLen - CRC_LEN <S2SV_ModEnd> ; newName [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27208\n\n```\nCWE-326 void device_init ( ) { <S2SV_StartBug> hw_init ( LOW_FREQUENCY ) ; <S2SV_EndBug> if ( ! tsc_sensor_exists ( ) ) { _NFC_status = nfc_init ( ) ; } if ( _NFC_status == NFC_IS_ACTIVE ) { printf1 ( TAG_NFC , \"Have<S2SV_blank>NFC\\\\r\\\\n\" ) ; isLowFreq = 1 ; IS_BUTTON_PRESSED = is_physical_button_pressed ; } else { printf1 ( TAG_NFC , \"Have<S2SV_blank>NO<S2SV_blank>NFC\\\\r\\\\n\" ) ; hw_init ( HIGH_FREQUENCY ) ; isLowFreq = 0 ; device_init_button ( ) ; } usbhid_init ( ) ; ctaphid_init ( ) ; ctap_init ( ) ; device_migrate ( ) ; <S2SV_StartBug> # if BOOT_TO_DFU <S2SV_EndBug> flash_option_bytes_init ( 1 ) ; # else flash_option_bytes_init ( 0 ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> LOW_FREQUENCY ) ; # if BOOT_TO_DFU flash_option_bytes_init ( 1 ) ; # else flash_option_bytes_init ( 0 ) ; # endif <S2SV_ModStart> ( ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18204\n\n```\nCWE-000 int ocfs2_setattr ( struct dentry * dentry , struct iattr * attr ) { int status = 0 , size_change ; int inode_locked = 0 ; struct inode * inode = d_inode ( dentry ) ; struct super_block * sb = inode -> i_sb ; struct ocfs2_super * osb = OCFS2_SB ( sb ) ; struct buffer_head * bh = NULL ; handle_t * handle = NULL ; struct dquot * transfer_to [ MAXQUOTAS ] = { } ; int qtype ; int had_lock ; struct ocfs2_lock_holder oh ; trace_ocfs2_setattr ( inode , dentry , ( unsigned long long ) OCFS2_I ( inode ) -> ip_blkno , dentry -> d_name . len , dentry -> d_name . name , attr -> ia_valid , attr -> ia_mode , from_kuid ( & init_user_ns , attr -> ia_uid ) , from_kgid ( & init_user_ns , attr -> ia_gid ) ) ; if ( S_ISLNK ( inode -> i_mode ) ) attr -> ia_valid &= ~ ATTR_SIZE ; # define OCFS2_VALID_ATTRS ( ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE | ATTR_GID | ATTR_UID | ATTR_MODE ) if ( ! ( attr -> ia_valid & OCFS2_VALID_ATTRS ) ) return 0 ; status = setattr_prepare ( dentry , attr ) ; if ( status ) return status ; if ( is_quota_modification ( inode , attr ) ) { status = dquot_initialize ( inode ) ; if ( status ) return status ; } size_change = S_ISREG ( inode -> i_mode ) && attr -> ia_valid & ATTR_SIZE ; if ( size_change ) { <S2SV_StartBug> status = ocfs2_rw_lock ( inode , 1 ) ; <S2SV_EndBug> if ( status < 0 ) { mlog_errno ( status ) ; goto bail ; } } had_lock = ocfs2_inode_lock_tracker ( inode , & bh , 1 , & oh ) ; if ( had_lock < 0 ) { status = had_lock ; goto bail_unlock_rw ; } else if ( had_lock ) { mlog ( ML_ERROR , \"Another<S2SV_blank>case<S2SV_blank>of<S2SV_blank>recursive<S2SV_blank>locking:\\\\n\" ) ; dump_stack ( ) ; } inode_locked = 1 ; if ( size_change ) { status = inode_newsize_ok ( inode , attr -> ia_size ) ; if ( status ) <S2SV_StartBug> goto bail_unlock ; <S2SV_EndBug> inode_dio_wait ( inode ) ; if ( i_size_read ( inode ) >= attr -> ia_size ) { if ( ocfs2_should_order_data ( inode ) ) { status = ocfs2_begin_ordered_truncate ( inode , attr -> ia_size ) ; if ( status ) goto bail_unlock ; } status = ocfs2_truncate_file ( inode , bh , attr -> ia_size ) ; } else status = ocfs2_extend_file ( inode , bh , attr -> ia_size ) ; if ( status < 0 ) { if ( status != - ENOSPC ) mlog_errno ( status ) ; status = - ENOSPC ; goto bail_unlock ; } } if ( ( attr -> ia_valid & ATTR_UID && ! uid_eq ( attr -> ia_uid , inode -> i_uid ) ) || ( attr -> ia_valid & ATTR_GID && ! gid_eq ( attr -> ia_gid , inode -> i_gid ) ) ) { if ( attr -> ia_valid & ATTR_UID && ! uid_eq ( attr -> ia_uid , inode -> i_uid ) && OCFS2_HAS_RO_COMPAT_FEATURE ( sb , OCFS2_FEATURE_RO_COMPAT_USRQUOTA ) ) { transfer_to [ USRQUOTA ] = dqget ( sb , make_kqid_uid ( attr -> ia_uid ) ) ; if ( IS_ERR ( transfer_to [ USRQUOTA ] ) ) { status = PTR_ERR ( transfer_to [ USRQUOTA ] ) ; goto bail_unlock ; } } if ( attr -> ia_valid & ATTR_GID && ! gid_eq ( attr -> ia_gid , inode -> i_gid ) && OCFS2_HAS_RO_COMPAT_FEATURE ( sb , OCFS2_FEATURE_RO_COMPAT_GRPQUOTA ) ) { transfer_to [ GRPQUOTA ] = dqget ( sb , make_kqid_gid ( attr -> ia_gid ) ) ; if ( IS_ERR ( transfer_to [ GRPQUOTA ] ) ) { status = PTR_ERR ( transfer_to [ GRPQUOTA ] ) ; goto bail_unlock ; } } handle = ocfs2_start_trans ( osb , OCFS2_INODE_UPDATE_CREDITS + 2 * ocfs2_quota_trans_credits ( sb ) ) ; if ( IS_ERR ( handle ) ) { status = PTR_ERR ( handle ) ; mlog_errno ( status ) ; goto bail_unlock ; } status = __dquot_transfer ( inode , transfer_to ) ; if ( status < 0 ) goto bail_commit ; } else { handle = ocfs2_start_trans ( osb , OCFS2_INODE_UPDATE_CREDITS ) ; if ( IS_ERR ( handle ) ) { status = PTR_ERR ( handle ) ; mlog_errno ( status ) ; goto bail_unlock ; } } setattr_copy ( inode , attr ) ; mark_inode_dirty ( inode ) ; status = ocfs2_mark_inode_dirty ( handle , inode , bh ) ; if ( status < 0 ) mlog_errno ( status ) ; bail_commit : ocfs2_commit_trans ( osb , handle ) ; bail_unlock : if ( status && inode_locked ) { ocfs2_inode_unlock_tracker ( inode , 1 , & oh , had_lock ) ; inode_locked = 0 ; } bail_unlock_rw : if ( size_change ) ocfs2_rw_unlock ( inode , 1 ) ; bail : for ( qtype = 0 ; qtype < OCFS2_MAXQUOTAS ; qtype ++ ) dqput ( transfer_to [ qtype ] ) ; if ( ! status && attr -> ia_valid & ATTR_MODE ) { status = ocfs2_acl_chmod ( inode , bh ) ; if ( status < 0 ) mlog_errno ( status ) ; } if ( inode_locked ) ocfs2_inode_unlock_tracker ( inode , 1 , & oh , had_lock ) ; brelse ( bh ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_change ) { inode_dio_wait ( inode ) ; <S2SV_ModStart> ) goto bail_unlock <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 static void sgi_timer_get ( struct k_itimer * timr , struct itimerspec * cur_setting ) { if ( timr -> it . mmtimer . clock == TIMER_OFF ) { cur_setting -> it_interval . tv_nsec = 0 ; cur_setting -> it_interval . tv_sec = 0 ; cur_setting -> it_value . tv_nsec = 0 ; cur_setting -> it_value . tv_sec = 0 ; return ; } <S2SV_StartBug> ns_to_timespec ( cur_setting -> it_interval , timr -> it . mmtimer . incr * sgi_clock_period ) ; <S2SV_EndBug> <S2SV_StartBug> ns_to_timespec ( cur_setting -> it_value , ( timr -> it . mmtimer . expires - rtc_time ( ) ) * sgi_clock_period ) ; <S2SV_EndBug> <S2SV_StartBug> return ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } <S2SV_ModEnd> cur_setting -> it_interval <S2SV_ModStart> cur_setting -> it_interval = ns_to_timespec ( <S2SV_ModEnd> timr -> it <S2SV_ModStart> sgi_clock_period ) ; <S2SV_ModEnd> cur_setting -> it_value <S2SV_ModStart> cur_setting -> it_value = ns_to_timespec ( <S2SV_ModEnd> ( timr -> <S2SV_ModStart> sgi_clock_period ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 <S2SV_StartBug> static void sas_destruct_devices ( struct work_struct * work ) <S2SV_EndBug> { <S2SV_StartBug> struct domain_device * dev , * n ; <S2SV_EndBug> struct sas_discovery_event * ev = to_sas_discovery_event ( work ) ; struct asd_sas_port * port = ev -> port ; clear_bit ( DISCE_DESTRUCT , & port -> disc . pending ) ; list_for_each_entry_safe ( dev , n , & port -> destroy_list , disco_list_node ) { list_del_init ( & dev -> disco_list_node ) ; sas_remove_children ( & dev -> rphy -> dev ) ; sas_rphy_delete ( dev -> rphy ) ; sas_unregister_common_dev ( port , dev ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> void sas_destruct_devices ( <S2SV_ModStart> sas_destruct_devices ( struct asd_sas_port * port <S2SV_ModEnd> ) { struct <S2SV_ModStart> , * n <S2SV_ModEnd> ; list_for_each_entry_safe (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15140\n\n```\nCWE-416 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; register Quantum * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; image = AcquireImage ( image_info , exception ) ; image2 = ( Image * ) NULL ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } quantum_info = ( QuantumInfo * ) NULL ; clone_info = ( ImageInfo * ) NULL ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image = ReadMATImageV4 ( image_info , image , exception ) ; if ( image == NULL ) { if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; return ( ( Image * ) NULL ) ; } goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else { MATLAB_KO : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } filepos = TellBlob ( image ) ; <S2SV_StartBug> while ( ! EOFBlob ( image ) ) <S2SV_EndBug> { Frames = 1 ; <S2SV_StartBug> if ( filepos != ( unsigned int ) filepos ) <S2SV_EndBug> break ; if ( SeekBlob ( image , filepos , SEEK_SET ) != filepos ) break ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; <S2SV_StartBug> if ( ( MagickSizeType ) ( MATLAB_HDR . ObjectSize + filepos ) > GetBlobSize ( image ) ) <S2SV_EndBug> goto MATLAB_KO ; filepos += ( MagickOffsetType ) MATLAB_HDR . ObjectSize + 4 + 4 ; if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; clone_info = CloneImageInfo ( image_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = decompress_block ( image , & MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) { clone_info = DestroyImageInfo ( clone_info ) ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( image2 != image ) DeleteImageFromList ( & image2 ) ; # endif continue ; } MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; ( void ) ReadBlobXXXLong ( image2 ) ; if ( z != 3 ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } if ( AcquireMagickResource ( ListLengthResource , Frames ) == MagickFalse ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( ResourceLimitError , \"ListLengthExceedsLimit\" ) ; } break ; default : if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) { if ( ( image2 != ( Image * ) NULL ) && ( image2 != image ) ) { CloseBlob ( image2 ) ; DeleteImageFromList ( & image2 ) ; } if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ( ( size_t ) size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; if ( ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) != 4 ) goto MATLAB_KO ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; } if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; image -> colors = GetQuantumRange ( image -> depth ) ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( unsigned int ) ldblk * MATLAB_HDR . SizeY > MATLAB_HDR . ObjectSize ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { image -> type = GrayscaleType ; SetImageColorspace ( image , GRAYColorspace , exception ) ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; return ( DestroyImageList ( image ) ) ; } ( void ) SetImageBackgroundColor ( image , exception ) ; quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } ( void ) memset ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , <S2SV_StartBug> \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; <S2SV_EndBug> goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( image , q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( i != ( long ) MATLAB_HDR . SizeY ) goto END_OF_READING ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; InsertComplexDoubleRow ( image , ( double * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; InsertComplexFloatRow ( image , ( float * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; rotated_image -> colors = image -> colors ; DestroyBlob ( rotated_image ) ; rotated_image -> blob = ReferenceBlob ( image -> blob ) ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } if ( EOFBlob ( image ) != MagickFalse ) break ; AcquireNextImage ( image_info , image , exception ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; if ( ! EOFBlob ( image ) && TellBlob ( image ) < filepos ) goto NEXT_FRAME ; } if ( ( image2 != NULL ) && ( image2 != image ) ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; } END_OF_READING : RelinquishMagickMemory ( BImgBuff ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; if ( tmp == image2 ) image2 = ( Image * ) NULL ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; while ( filepos < GetBlobSize ( image ) && <S2SV_ModStart> if ( filepos > GetBlobSize ( image ) || filepos < 0 <S2SV_ModEnd> ) break ; <S2SV_ModStart> + filepos ) >= <S2SV_ModEnd> GetBlobSize ( image <S2SV_ModStart> - 1 ) ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8690\n\n```\nCWE-476 int main ( int argc , char * * argv ) { int fmtid ; int id ; char * infile ; jas_stream_t * instream ; jas_image_t * image ; int width ; int height ; int depth ; int numcmpts ; int verbose ; <S2SV_StartBug> char * fmtname ; <S2SV_EndBug> if ( jas_init ( ) ) { abort ( ) ; } cmdname = argv [ 0 ] ; infile = 0 ; verbose = 0 ; <S2SV_StartBug> while ( ( id = jas_getopt ( argc , argv , opts ) ) >= 0 ) { <S2SV_EndBug> switch ( id ) { case OPT_VERBOSE : verbose = 1 ; break ; case OPT_VERSION : printf ( \"%s\\\\n\" , JAS_VERSION ) ; exit ( EXIT_SUCCESS ) ; break ; <S2SV_StartBug> case OPT_INFILE : <S2SV_EndBug> infile = jas_optarg ; break ; case OPT_HELP : default : usage ( ) ; break ; } } <S2SV_StartBug> if ( infile ) { <S2SV_EndBug> if ( ! ( instream = jas_stream_fopen ( infile , \"rb\" ) ) ) { fprintf ( stderr , \"cannot<S2SV_blank>open<S2SV_blank>input<S2SV_blank>image<S2SV_blank>file<S2SV_blank>%s\\\\n\" , infile ) ; exit ( EXIT_FAILURE ) ; } } else { if ( ! ( instream = jas_stream_fdopen ( 0 , \"rb\" ) ) ) { fprintf ( stderr , \"cannot<S2SV_blank>open<S2SV_blank>standard<S2SV_blank>input\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } } if ( ( fmtid = jas_image_getfmt ( instream ) ) < 0 ) { fprintf ( stderr , \"unknown<S2SV_blank>image<S2SV_blank>format\\\\n\" ) ; } <S2SV_StartBug> if ( ! ( image = jas_image_decode ( instream , fmtid , 0 ) ) ) { <S2SV_EndBug> fprintf ( stderr , \"cannot<S2SV_blank>load<S2SV_blank>image\\\\n\" ) ; return EXIT_FAILURE ; } jas_stream_close ( instream ) ; numcmpts = jas_image_numcmpts ( image ) ; width = jas_image_cmptwidth ( image , 0 ) ; height = jas_image_cmptheight ( image , 0 ) ; depth = jas_image_cmptprec ( image , 0 ) ; if ( ! ( fmtname = jas_image_fmttostr ( fmtid ) ) ) { abort ( ) ; } printf ( \"%s<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%ld\\\\n\" , fmtname , numcmpts , width , height , depth , ( long ) jas_image_rawsize ( image ) ) ; jas_image_destroy ( image ) ; jas_image_clearfmts ( ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * fmtname ; int debug <S2SV_ModStart> = 0 ; debug = 0 ; <S2SV_ModStart> break ; case OPT_DEBUG : debug = atoi ( jas_optarg ) ; break ; case <S2SV_ModStart> ; } } jas_setdbglevel ( debug ) ; <S2SV_ModStart> ) ) { jas_stream_close ( instream ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0391\n\n```\nCWE-000 WORD32 ihevcd_decode ( iv_obj_t * ps_codec_obj , void * pv_api_ip , void * pv_api_op ) { WORD32 ret = IV_SUCCESS ; codec_t * ps_codec = ( codec_t * ) ( ps_codec_obj -> pv_codec_handle ) ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; WORD32 proc_idx = 0 ; WORD32 prev_proc_idx = 0 ; ps_codec -> i4_error_code = 0 ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } if ( ps_codec -> i4_init_done != 1 ) { ps_dec_op -> u4_error_code |= 1 << IVD_FATALERROR ; ps_dec_op -> u4_error_code |= IHEVCD_INIT_NOT_DONE ; return IV_FAIL ; } if ( ps_codec -> u4_pic_cnt >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code |= 1 << IVD_FATALERROR ; ps_dec_op -> u4_error_code |= IHEVCD_NUM_FRAMES_LIMIT_REACHED ; return IV_FAIL ; } if ( ps_codec -> i4_reset_flag ) { ps_codec -> i4_flush_mode = 1 ; } if ( 0 == ps_codec -> i4_flush_mode ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= MIN_START_CODE_LEN ) { if ( ( WORD32 ) ps_dec_ip -> u4_num_Bytes > 0 ) ps_dec_op -> u4_num_bytes_consumed = ps_dec_ip -> u4_num_Bytes ; else ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } # ifdef APPLY_CONCEALMENT { WORD32 num_mbs ; num_mbs = ( ps_codec -> i4_wd * ps_codec -> i4_ht + 255 ) >> 8 ; ps_codec -> mb_count = 0 ; memset ( ps_codec -> mb_map , 0 , ( ( num_mbs + 7 ) >> 3 ) ) ; } # endif if ( 0 == ps_codec -> i4_share_disp_buf && ps_codec -> i4_header_mode == 0 ) { UWORD32 i ; if ( ps_dec_ip -> s_out_buffer . u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec_ip -> s_out_buffer . u4_num_bufs ; i ++ ) { if ( ps_dec_ip -> s_out_buffer . pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> s_out_buffer . u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } ps_codec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_codec -> u4_ts = ps_dec_ip -> u4_ts ; if ( ps_codec -> i4_flush_mode ) { ps_dec_op -> u4_pic_wd = ps_codec -> i4_disp_wd ; ps_dec_op -> u4_pic_ht = ps_codec -> i4_disp_ht ; ps_dec_op -> u4_new_seq = 0 ; ps_codec -> ps_disp_buf = ( pic_buf_t * ) ihevc_disp_mgr_get ( ( disp_mgr_t * ) ps_codec -> pv_disp_buf_mgr , & ps_codec -> i4_disp_buf_id ) ; if ( ( ps_codec -> ps_disp_buf ) && ( ( 0 == ps_codec -> i4_share_disp_buf ) || ( IV_YUV_420P == ps_codec -> e_chroma_fmt ) ) ) { process_ctxt_t * ps_proc = & ps_codec -> as_process [ prev_proc_idx ] ; if ( 0 == ps_proc -> i4_init_done ) { ihevcd_init_proc_ctxt ( ps_proc , 0 ) ; } ret = ihevcd_fmt_conv ( ps_codec , & ps_codec -> as_process [ prev_proc_idx ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , 0 , ps_codec -> i4_disp_ht ) ; ihevc_buf_mgr_release ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_codec -> i4_disp_buf_id , BUF_MGR_DISP ) ; } ihevcd_fill_outargs ( ps_codec , ps_dec_ip , ps_dec_op ) ; if ( 1 == ps_dec_op -> u4_output_present ) { WORD32 xpos = ps_codec -> i4_disp_wd - 32 - LOGO_WD ; WORD32 ypos = ps_codec -> i4_disp_ht - 32 - LOGO_HT ; if ( ypos < 0 ) ypos = 0 ; if ( xpos < 0 ) xpos = 0 ; INSERT_LOGO ( ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , ps_codec -> i4_disp_strd , xpos , ypos , ps_codec -> e_chroma_fmt , ps_codec -> i4_disp_wd , ps_codec -> i4_disp_ht ) ; } if ( NULL == ps_codec -> ps_disp_buf ) { if ( ps_codec -> i4_reset_flag ) { ihevcd_init ( ps_codec ) ; } return ( IV_FAIL ) ; } return ( IV_SUCCESS ) ; } if ( ( 0 == ps_codec -> i4_header_mode ) && ( 1 == ps_codec -> i4_share_disp_buf ) ) { WORD32 buf_status ; buf_status = 1 ; if ( ps_codec -> pv_pic_buf_mgr ) buf_status = ihevc_buf_mgr_check_free ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr ) ; if ( 0 == buf_status ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return IV_FAIL ; } } ps_codec -> i4_bytes_remaining = ps_dec_ip -> u4_num_Bytes ; ps_codec -> pu1_inp_bitsbuf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer ; ps_codec -> s_parse . i4_end_of_frame = 0 ; ps_codec -> i4_pic_present = 0 ; ps_codec -> i4_slice_error = 0 ; ps_codec -> ps_disp_buf = NULL ; if ( ps_codec -> i4_num_cores > 1 ) { ithread_set_affinity ( 0 ) ; } while ( MIN_START_CODE_LEN < ps_codec -> i4_bytes_remaining ) { WORD32 nal_len ; WORD32 nal_ofst ; WORD32 bits_len ; if ( ps_codec -> i4_slice_error ) { slice_header_t * ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ; WORD32 next_slice_addr = ps_slice_hdr_next -> i2_ctb_x + ps_slice_hdr_next -> i2_ctb_y * ps_codec -> s_parse . ps_sps -> i2_pic_wd_in_ctb ; if ( ps_codec -> s_parse . i4_next_ctb_indx == next_slice_addr ) ps_codec -> i4_slice_error = 0 ; } if ( ps_codec -> pu1_bitsbuf_dynamic ) { ps_codec -> pu1_bitsbuf = ps_codec -> pu1_bitsbuf_dynamic ; ps_codec -> u4_bitsbuf_size = ps_codec -> u4_bitsbuf_size_dynamic ; } else { ps_codec -> pu1_bitsbuf = ps_codec -> pu1_bitsbuf_static ; ps_codec -> u4_bitsbuf_size = ps_codec -> u4_bitsbuf_size_static ; } nal_ofst = ihevcd_nal_search_start_code ( ps_codec -> pu1_inp_bitsbuf , ps_codec -> i4_bytes_remaining ) ; ps_codec -> i4_nal_ofst = nal_ofst ; { WORD32 bytes_remaining = ps_codec -> i4_bytes_remaining - nal_ofst ; bytes_remaining = MIN ( ( UWORD32 ) bytes_remaining , ps_codec -> u4_bitsbuf_size ) ; ihevcd_nal_remv_emuln_bytes ( ps_codec -> pu1_inp_bitsbuf + nal_ofst , ps_codec -> pu1_bitsbuf , bytes_remaining , & nal_len , & bits_len ) ; if ( bits_len < ( WORD32 ) ( ps_codec -> u4_bitsbuf_size - 8 ) ) { memset ( ps_codec -> pu1_bitsbuf + bits_len , 0 , 2 * sizeof ( UWORD32 ) ) ; } } ps_codec -> i4_num_emln_bytes = nal_len - bits_len ; ps_codec -> i4_nal_len = nal_len ; ihevcd_bits_init ( & ps_codec -> s_parse . s_bitstrm , ps_codec -> pu1_bitsbuf , bits_len ) ; ret = ihevcd_nal_unit ( ps_codec ) ; if ( ps_codec -> i4_pic_present && ( ps_codec -> s_parse . i4_next_ctb_indx != ps_codec -> s_parse . ps_sps -> i4_pic_size_in_ctb ) ) { if ( ( ps_codec -> i4_bytes_remaining - ( nal_len + nal_ofst ) <= MIN_START_CODE_LEN ) || ( ps_codec -> i4_header_in_slice_mode ) ) { slice_header_t * ps_slice_hdr_next ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = 0 ; ps_slice_hdr_next -> i2_ctb_y = ps_codec -> s_parse . ps_sps -> i2_pic_ht_in_ctb ; ps_codec -> i4_slice_error = 1 ; continue ; } } if ( IHEVCD_IGNORE_SLICE == ret ) { <S2SV_StartBug> ps_codec -> pu1_inp_bitsbuf += ( nal_ofst + nal_len ) ; <S2SV_EndBug> ps_codec -> i4_bytes_remaining -= ( nal_ofst + nal_len ) ; continue ; } if ( ( IVD_RES_CHANGED == ret ) || ( IHEVCD_UNSUPPORTED_DIMENSIONS == ret ) ) { break ; } if ( ret != IHEVCD_SLICE_IN_HEADER_MODE ) { if ( ( 0 == ps_codec -> i4_slice_error ) || ( ps_codec -> i4_bytes_remaining - ( nal_len + nal_ofst ) <= MIN_START_CODE_LEN ) ) { ps_codec -> pu1_inp_bitsbuf += ( nal_ofst + nal_len ) ; ps_codec -> i4_bytes_remaining -= ( nal_ofst + nal_len ) ; } if ( ret != IHEVCD_SUCCESS ) break ; if ( ps_codec -> s_parse . i4_end_of_frame ) break ; } else { ret = IHEVCD_SUCCESS ; break ; } if ( ( ps_codec -> u4_allocate_dynamic_done == 0 ) && ps_codec -> i4_sps_done ) { WORD32 ret ; ret = ihevcd_allocate_dynamic_bufs ( ps_codec ) ; if ( ret != IV_SUCCESS ) { ihevcd_free_dynamic_bufs ( ps_codec ) ; ps_codec -> i4_error_code = IVD_MEM_ALLOC_FAILED ; ps_dec_op -> u4_error_code |= 1 << IVD_FATALERROR ; ps_dec_op -> u4_error_code |= IVD_MEM_ALLOC_FAILED ; return IV_FAIL ; } } BREAK_AFTER_SLICE_NAL ( ) ; } if ( ( ps_codec -> u4_pic_cnt == 0 ) && ( ret != IHEVCD_SUCCESS ) ) { ps_codec -> i4_error_code = ret ; ihevcd_fill_outargs ( ps_codec , ps_dec_ip , ps_dec_op ) ; return IV_FAIL ; } if ( 1 == ps_codec -> i4_pic_present ) { WORD32 i ; sps_t * ps_sps = ps_codec -> s_parse . ps_sps ; ps_codec -> i4_first_pic_done = 1 ; if ( ps_codec -> i4_num_cores > 1 && ps_codec -> s_parse . i4_end_of_frame ) { process_ctxt_t * ps_proc ; ps_proc = & ps_codec -> as_process [ ps_codec -> i4_num_cores - 1 ] ; if ( ( ps_codec -> ps_disp_buf ) && ( ( 0 == ps_codec -> i4_share_disp_buf ) || ( IV_YUV_420P == ps_codec -> e_chroma_fmt ) ) ) { if ( ( 0 == ps_codec -> u4_enable_fmt_conv_ahead ) || ( ps_codec -> i4_disp_buf_id == ps_proc -> i4_cur_pic_buf_id ) ) for ( i = 0 ; i < ps_sps -> i2_pic_ht_in_ctb ; i ++ ) { proc_job_t s_job ; IHEVCD_ERROR_T ret ; s_job . i4_cmd = CMD_FMTCONV ; s_job . i2_ctb_cnt = 0 ; s_job . i2_ctb_x = 0 ; s_job . i2_ctb_y = i ; s_job . i2_slice_idx = 0 ; s_job . i4_tu_coeff_data_ofst = 0 ; ret = ihevcd_jobq_queue ( ( jobq_t * ) ps_codec -> s_parse . pv_proc_jobq , & s_job , sizeof ( proc_job_t ) , 1 ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) return ( WORD32 ) ret ; } } ret = ihevcd_jobq_terminate ( ( jobq_t * ) ps_codec -> s_parse . pv_proc_jobq ) ; while ( 1 ) { IHEVCD_ERROR_T ret ; proc_job_t s_job ; process_ctxt_t * ps_proc ; ps_proc = & ps_codec -> as_process [ ps_codec -> i4_num_cores - 1 ] ; ret = ihevcd_jobq_dequeue ( ( jobq_t * ) ps_proc -> pv_proc_jobq , & s_job , sizeof ( proc_job_t ) , 1 ) ; if ( ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS != ret ) break ; ps_proc -> i4_ctb_cnt = s_job . i2_ctb_cnt ; ps_proc -> i4_ctb_x = s_job . i2_ctb_x ; ps_proc -> i4_ctb_y = s_job . i2_ctb_y ; ps_proc -> i4_cur_slice_idx = s_job . i2_slice_idx ; if ( CMD_PROCESS == s_job . i4_cmd ) { ihevcd_init_proc_ctxt ( ps_proc , s_job . i4_tu_coeff_data_ofst ) ; ihevcd_process ( ps_proc ) ; } else if ( CMD_FMTCONV == s_job . i4_cmd ) { sps_t * ps_sps = ps_codec -> s_parse . ps_sps ; WORD32 num_rows = 1 << ps_sps -> i1_log2_ctb_size ; if ( 0 == ps_proc -> i4_init_done ) { ihevcd_init_proc_ctxt ( ps_proc , 0 ) ; } num_rows = MIN ( num_rows , ( ps_codec -> i4_disp_ht - ( s_job . i2_ctb_y << ps_sps -> i1_log2_ctb_size ) ) ) ; if ( num_rows < 0 ) num_rows = 0 ; ihevcd_fmt_conv ( ps_codec , ps_proc , ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , s_job . i2_ctb_y << ps_sps -> i1_log2_ctb_size , num_rows ) ; } } } else if ( ( ps_codec -> ps_disp_buf ) && ( ( 0 == ps_codec -> i4_share_disp_buf ) || ( IV_YUV_420P == ps_codec -> e_chroma_fmt ) ) && ( ps_codec -> s_parse . i4_end_of_frame ) ) { process_ctxt_t * ps_proc = & ps_codec -> as_process [ proc_idx ] ; ps_codec -> s_fmt_conv . i4_num_rows = ps_codec -> i4_disp_ht - ps_codec -> s_fmt_conv . i4_cur_row ; if ( 0 == ps_proc -> i4_init_done ) { ihevcd_init_proc_ctxt ( ps_proc , 0 ) ; } if ( ps_codec -> s_fmt_conv . i4_num_rows < 0 ) ps_codec -> s_fmt_conv . i4_num_rows = 0 ; ret = ihevcd_fmt_conv ( ps_codec , ps_proc , ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , ps_codec -> s_fmt_conv . i4_cur_row , ps_codec -> s_fmt_conv . i4_num_rows ) ; ps_codec -> s_fmt_conv . i4_cur_row += ps_codec -> s_fmt_conv . i4_num_rows ; } DEBUG_DUMP_MV_MAP ( ps_codec ) ; ihevc_buf_mgr_set_status ( ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr , ps_codec -> as_process [ proc_idx ] . i4_cur_mv_bank_buf_id , BUF_MGR_REF ) ; ihevc_buf_mgr_set_status ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_codec -> as_process [ proc_idx ] . i4_cur_pic_buf_id , BUF_MGR_REF ) ; ihevc_buf_mgr_set_status ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_codec -> as_process [ proc_idx ] . i4_cur_pic_buf_id , BUF_MGR_DISP ) ; ihevc_dpb_mgr_insert_ref ( ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr , ps_codec -> as_process [ proc_idx ] . ps_cur_pic , ps_codec -> as_process [ proc_idx ] . i4_cur_pic_buf_id ) ; if ( ( 0 == ps_codec -> i4_share_disp_buf ) && ( ps_codec -> ps_disp_buf ) ) ihevc_buf_mgr_release ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_codec -> i4_disp_buf_id , BUF_MGR_DISP ) ; for ( i = 0 ; i < ( ps_codec -> i4_num_cores - 1 ) ; i ++ ) { if ( ps_codec -> ai4_process_thread_created [ i ] ) { ithread_join ( ps_codec -> apv_process_thread_handle [ i ] , NULL ) ; ps_codec -> ai4_process_thread_created [ i ] = 0 ; } } DEBUG_VALIDATE_PADDED_REGION ( & ps_codec -> as_process [ proc_idx ] ) ; if ( ps_codec -> u4_pic_cnt > 0 ) { DEBUG_DUMP_PIC_PU ( ps_codec ) ; } DEBUG_DUMP_PIC_BUFFERS ( ps_codec ) ; ps_codec -> u4_pic_cnt ++ ; } ihevcd_fill_outargs ( ps_codec , ps_dec_ip , ps_dec_op ) ; if ( 1 == ps_dec_op -> u4_output_present ) { WORD32 xpos = ps_codec -> i4_disp_wd - 32 - LOGO_WD ; WORD32 ypos = ps_codec -> i4_disp_ht - 32 - LOGO_HT ; if ( ypos < 0 ) ypos = 0 ; if ( xpos < 0 ) xpos = 0 ; INSERT_LOGO ( ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , ps_codec -> i4_disp_strd , xpos , ypos , ps_codec -> e_chroma_fmt , ps_codec -> i4_disp_wd , ps_codec -> i4_disp_ht ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ps_codec -> s_parse . i4_cur_slice_idx = MAX ( 0 , ( ps_codec -> s_parse . i4_cur_slice_idx - 1 ) ) ; ps_codec ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3364\n\n```\nCWE-119 static int nci_extract_activation_params_iso_dep ( struct nci_dev * ndev , struct nci_rf_intf_activated_ntf * ntf , __u8 * data ) { struct activation_params_nfca_poll_iso_dep * nfca_poll ; struct activation_params_nfcb_poll_iso_dep * nfcb_poll ; switch ( ntf -> activation_rf_tech_and_mode ) { case NCI_NFC_A_PASSIVE_POLL_MODE : nfca_poll = & ntf -> activation_params . nfca_poll_iso_dep ; <S2SV_StartBug> nfca_poll -> rats_res_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"rats_res_len<S2SV_blank>%d\\\\n\" , nfca_poll -> rats_res_len ) ; if ( nfca_poll -> rats_res_len > 0 ) { memcpy ( nfca_poll -> rats_res , data , nfca_poll -> rats_res_len ) ; } break ; case NCI_NFC_B_PASSIVE_POLL_MODE : nfcb_poll = & ntf -> activation_params . nfcb_poll_iso_dep ; <S2SV_StartBug> nfcb_poll -> attrib_res_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"attrib_res_len<S2SV_blank>%d\\\\n\" , nfcb_poll -> attrib_res_len ) ; if ( nfcb_poll -> attrib_res_len > 0 ) { memcpy ( nfcb_poll -> attrib_res , data , nfcb_poll -> attrib_res_len ) ; } break ; default : pr_err ( \"unsupported<S2SV_blank>activation_rf_tech_and_mode<S2SV_blank>0x%x\\\\n\" , ntf -> activation_rf_tech_and_mode ) ; return NCI_STATUS_RF_PROTOCOL_ERROR ; } return NCI_STATUS_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rats_res_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , 20 ) <S2SV_ModStart> -> attrib_res_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , 50 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9761\n\n```\nCWE-119 static int r_core_cmd_subst_i ( RCore * core , char * cmd , char * colon ) { const char * quotestr = \"`\" ; const char * tick = NULL ; char * ptr , * ptr2 , * str ; char * arroba = NULL ; int i , ret = 0 , pipefd ; bool usemyblock = false ; int scr_html = - 1 ; int scr_color = - 1 ; bool eos = false ; bool haveQuote = false ; if ( ! cmd ) { return 0 ; } cmd = r_str_trim_head_tail ( cmd ) ; switch ( * cmd ) { case '.' : if ( cmd [ 1 ] == \\'\"\\' ) { return r_cmd_call ( core -> rcmd , cmd ) ; } break ; case \\'\"\\' : for ( ; * cmd ; ) { int pipefd = - 1 ; ut64 oseek = UT64_MAX ; char * line , * p ; haveQuote = * cmd == \\'\"\\' ; if ( haveQuote ) { cmd ++ ; <S2SV_StartBug> p = find_eoq ( cmd + 1 ) ; <S2SV_EndBug> if ( ! p || ! * p ) { eprintf ( \"Missing<S2SV_blank>\\\\\"<S2SV_blank>in<S2SV_blank>(%s).\" , cmd ) ; return false ; } * p ++ = 0 ; if ( ! * p ) { eos = true ; } } else { char * sc = strchr ( cmd , ';' ) ; if ( sc ) { * sc = 0 ; } r_core_cmd0 ( core , cmd ) ; if ( ! sc ) { break ; } cmd = sc + 1 ; continue ; } if ( p [ 0 ] ) { if ( p [ 0 ] == '@' ) { p -- ; } while ( p [ 1 ] == ';' || IS_WHITESPACE ( p [ 1 ] ) ) { p ++ ; } if ( p [ 1 ] == '@' || ( p [ 1 ] && p [ 2 ] == '@' ) ) { char * q = strchr ( p + 1 , \\'\"\\' ) ; if ( q ) { * q = 0 ; } haveQuote = q != NULL ; oseek = core -> offset ; r_core_seek ( core , r_num_math ( core -> num , p + 2 ) , 1 ) ; if ( q ) { * p = \\'\"\\' ; p = q ; } else { p = strchr ( p + 1 , ';' ) ; } } if ( p && * p && p [ 1 ] == '>' ) { str = p + 2 ; while ( * str == '>' ) { str ++ ; } while ( IS_WHITESPACE ( * str ) ) { str ++ ; } r_cons_flush ( ) ; pipefd = r_cons_pipe_open ( str , 1 , p [ 2 ] == '>' ) ; } } line = strdup ( cmd ) ; line = r_str_replace ( line , \"\\\\\\\\\\\\\"\" , \"\\\\\"\" , true ) ; if ( p && * p && p [ 1 ] == '|' ) { str = p + 2 ; while ( IS_WHITESPACE ( * str ) ) { str ++ ; } r_core_cmd_pipe ( core , cmd , str ) ; } else { r_cmd_call ( core -> rcmd , line ) ; } free ( line ) ; if ( oseek != UT64_MAX ) { r_core_seek ( core , oseek , 1 ) ; oseek = UT64_MAX ; } if ( pipefd != - 1 ) { r_cons_flush ( ) ; r_cons_pipe_close ( pipefd ) ; } if ( ! p ) { break ; } if ( eos ) { break ; } if ( haveQuote ) { if ( * p == ';' ) { cmd = p + 1 ; } else { if ( * p == \\'\"\\' ) { cmd = p + 1 ; } else { * p = \\'\"\\' ; cmd = p ; } } } else { cmd = p + 1 ; } } return true ; case '(' : if ( cmd [ 1 ] != '*' ) { return r_cmd_call ( core -> rcmd , cmd ) ; } } if ( * cmd != '#' ) { ptr = ( char * ) r_str_lastbut ( cmd , '#' , quotestr ) ; if ( ptr && ( ptr [ 1 ] == '<S2SV_blank>' || ptr [ 1 ] == '\\\\t' ) ) { * ptr = '\\\\0' ; } } if ( * cmd != '#' ) { ptr = ( char * ) r_str_lastbut ( cmd , ';' , quotestr ) ; if ( colon && ptr ) { int ret ; * ptr = '\\\\0' ; if ( r_core_cmd_subst ( core , cmd ) == - 1 ) { return - 1 ; } cmd = ptr + 1 ; ret = r_core_cmd_subst ( core , cmd ) ; * ptr = ';' ; return ret ; } } ptr = ( char * ) r_str_lastbut ( cmd , '|' , quotestr ) ; if ( ptr ) { char * ptr2 = strchr ( cmd , '`' ) ; if ( ! ptr2 || ( ptr2 && ptr2 > ptr ) ) { if ( ! tick || ( tick && tick > ptr ) ) { * ptr = '\\\\0' ; cmd = r_str_clean ( cmd ) ; if ( ! strcmp ( ptr + 1 , \"?\" ) ) { eprintf ( \"Usage:<S2SV_blank><r2command><S2SV_blank>|<S2SV_blank><program|H|>\\\\n\" ) ; eprintf ( \"<S2SV_blank>pd|?<S2SV_blank><S2SV_blank><S2SV_blank>-<S2SV_blank>show<S2SV_blank>this<S2SV_blank>help\\\\n\" ) ; eprintf ( \"<S2SV_blank>pd|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>-<S2SV_blank>disable<S2SV_blank>scr.html<S2SV_blank>and<S2SV_blank>scr.color\\\\n\" ) ; eprintf ( \"<S2SV_blank>pd|H<S2SV_blank><S2SV_blank><S2SV_blank>-<S2SV_blank>enable<S2SV_blank>scr.html,<S2SV_blank>respect<S2SV_blank>scr.color\\\\n\" ) ; return ret ; } else if ( ! strcmp ( ptr + 1 , \"H\" ) ) { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , true ) ; } else if ( ptr [ 1 ] ) { int value = core -> num -> value ; if ( * cmd ) { r_core_cmd_pipe ( core , cmd , ptr + 1 ) ; } else { r_io_system ( core -> io , ptr + 1 ) ; } core -> num -> value = value ; return 0 ; } else { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , 0 ) ; scr_color = r_config_get_i ( core -> config , \"scr.color\" ) ; r_config_set_i ( core -> config , \"scr.color\" , false ) ; } } } } ptr = ( char * ) r_str_lastbut ( cmd , '&' , quotestr ) ; while ( ptr && ptr [ 1 ] == '&' ) { * ptr = '\\\\0' ; ret = r_cmd_call ( core -> rcmd , cmd ) ; if ( ret == - 1 ) { eprintf ( \"command<S2SV_blank>error(%s)\\\\n\" , cmd ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } return ret ; } for ( cmd = ptr + 2 ; cmd && * cmd == '<S2SV_blank>' ; cmd ++ ) ; ptr = strchr ( cmd , '&' ) ; } free ( core -> oobi ) ; core -> oobi = NULL ; ptr = strstr ( cmd , \"?*\" ) ; if ( ptr ) { char * prech = ptr - 1 ; if ( * prech != '~' ) { ptr [ 1 ] = 0 ; if ( * cmd != '#' && strlen ( cmd ) < 5 ) { r_cons_break_push ( NULL , NULL ) ; recursive_help ( core , cmd ) ; r_cons_break_pop ( ) ; r_cons_grep_parsecmd ( ptr + 2 , \"`\" ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } return 0 ; } } } # if 0 ptr = strchr ( cmd , '<' ) ; if ( ptr ) { ptr [ 0 ] = '\\\\0' ; if ( r_cons_singleton ( ) -> is_interactive ) { if ( ptr [ 1 ] == '<' ) { for ( str = ptr + 2 ; str [ 0 ] == '<S2SV_blank>' ; str ++ ) { } eprintf ( \"==><S2SV_blank>Reading<S2SV_blank>from<S2SV_blank>stdin<S2SV_blank>until<S2SV_blank>\\'%s\\'\\\\n\" , str ) ; free ( core -> oobi ) ; core -> oobi = malloc ( 1 ) ; if ( core -> oobi ) { core -> oobi [ 0 ] = '\\\\0' ; } core -> oobi_len = 0 ; for ( ; ; ) { char buf [ 1024 ] ; int ret ; write ( 1 , \"><S2SV_blank>\" , 2 ) ; fgets ( buf , sizeof ( buf ) - 1 , stdin ) ; if ( feof ( stdin ) ) { break ; } if ( * buf ) buf [ strlen ( buf ) - 1 ] = '\\\\0' ; ret = strlen ( buf ) ; core -> oobi_len += ret ; core -> oobi = realloc ( core -> oobi , core -> oobi_len + 1 ) ; if ( core -> oobi ) { if ( ! strcmp ( buf , str ) ) { break ; } strcat ( ( char * ) core -> oobi , buf ) ; } } } else { for ( str = ptr + 1 ; * str == '<S2SV_blank>' ; str ++ ) { } if ( ! * str ) { goto next ; } eprintf ( \"Slurping<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , str ) ; free ( core -> oobi ) ; core -> oobi = ( ut8 * ) r_file_slurp ( str , & core -> oobi_len ) ; if ( ! core -> oobi ) { eprintf ( \"cannot<S2SV_blank>open<S2SV_blank>file\\\\n\" ) ; } else if ( ptr == cmd ) { return r_core_cmd_buffer ( core , ( const char * ) core -> oobi ) ; } } } else { eprintf ( \"Cannot<S2SV_blank>slurp<S2SV_blank>with<S2SV_blank><<<S2SV_blank>in<S2SV_blank>non-interactive<S2SV_blank>mode\\\\n\" ) ; return 0 ; } } next : # endif ptr = strchr ( cmd , '>' ) ; if ( ptr ) { int fdn = 1 ; int pipecolor = r_config_get_i ( core -> config , \"scr.pipecolor\" ) ; int use_editor = false ; int ocolor = r_config_get_i ( core -> config , \"scr.color\" ) ; * ptr = '\\\\0' ; str = r_str_trim_head_tail ( ptr + 1 + ( ptr [ 1 ] == '>' ) ) ; if ( ! * str ) { eprintf ( \"No<S2SV_blank>output?\\\\n\" ) ; goto next2 ; } if ( ptr > ( cmd + 1 ) && ISWHITECHAR ( ptr [ - 2 ] ) ) { char * fdnum = ptr - 1 ; if ( * fdnum == 'H' ) { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , true ) ; pipecolor = true ; * fdnum = 0 ; } else { if ( IS_DIGIT ( * fdnum ) ) { fdn = * fdnum - '0' ; } * fdnum = 0 ; } } r_cons_set_interactive ( false ) ; if ( ! strcmp ( str , \"-\" ) ) { use_editor = true ; str = r_file_temp ( \"dumpedit\" ) ; r_config_set ( core -> config , \"scr.color\" , \"false\" ) ; } if ( fdn > 0 ) { pipefd = r_cons_pipe_open ( str , fdn , ptr [ 1 ] == '>' ) ; if ( pipefd != - 1 ) { if ( ! pipecolor ) { r_config_set_i ( core -> config , \"scr.color\" , 0 ) ; } ret = r_core_cmd_subst ( core , cmd ) ; r_cons_flush ( ) ; r_cons_pipe_close ( pipefd ) ; } } r_cons_set_last_interactive ( ) ; if ( ! pipecolor ) { r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; } if ( use_editor ) { const char * editor = r_config_get ( core -> config , \"cfg.editor\" ) ; if ( editor && * editor ) { r_sys_cmdf ( \"%s<S2SV_blank>\\'%s\\'\" , editor , str ) ; r_file_rm ( str ) ; } else { eprintf ( \"No<S2SV_blank>cfg.editor<S2SV_blank>configured\\\\n\" ) ; } r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; free ( str ) ; } if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } return ret ; } next2 : ptr = strchr ( cmd , '`' ) ; if ( ptr ) { int empty = 0 ; int oneline = 1 ; if ( ptr [ 1 ] == '`' ) { memmove ( ptr , ptr + 1 , strlen ( ptr ) ) ; oneline = 0 ; empty = 1 ; } ptr2 = strchr ( ptr + 1 , '`' ) ; if ( empty ) { } else if ( ! ptr2 ) { eprintf ( \"parse:<S2SV_blank>Missing<S2SV_blank>backtick<S2SV_blank>in<S2SV_blank>expression.\\\\n\" ) ; goto fail ; } else { int value = core -> num -> value ; * ptr = '\\\\0' ; * ptr2 = '\\\\0' ; if ( ptr [ 1 ] == '!' ) { str = r_core_cmd_str_pipe ( core , ptr + 1 ) ; } else { str = r_core_cmd_str ( core , ptr + 1 ) ; } if ( ! str ) { goto fail ; } if ( * str == '|' || * str == '*' ) { eprintf ( \"r_core_cmd_subst_i:<S2SV_blank>invalid<S2SV_blank>backticked<S2SV_blank>command\\\\n\" ) ; free ( str ) ; goto fail ; } if ( oneline && str ) { for ( i = 0 ; str [ i ] ; i ++ ) { if ( str [ i ] == '\\\\n' ) { str [ i ] = '<S2SV_blank>' ; } } } str = r_str_append ( str , ptr2 + 1 ) ; cmd = r_str_append ( strdup ( cmd ) , str ) ; core -> num -> value = value ; ret = r_core_cmd_subst ( core , cmd ) ; free ( cmd ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } free ( str ) ; return ret ; } } core -> fixedblock = false ; if ( r_str_endswith ( cmd , \"~?\" ) && cmd [ 2 ] == '\\\\0' ) { r_cons_grep_help ( ) ; return true ; } if ( * cmd != '.' ) { r_cons_grep_parsecmd ( cmd , quotestr ) ; } if ( * cmd != '(' && * cmd != \\'\"\\' ) { ptr = strchr ( cmd , '@' ) ; if ( ptr == cmd + 1 && * cmd == '?' ) { ptr = NULL ; } } else { ptr = NULL ; } core -> tmpseek = ptr ? true : false ; int rc = 0 ; if ( ptr ) { char * f , * ptr2 = strchr ( ptr + 1 , '!' ) ; ut64 addr = UT64_MAX ; const char * tmpbits = NULL ; const char * offstr = NULL ; ut64 tmpbsz = core -> blocksize ; char * tmpeval = NULL ; ut64 tmpoff = core -> offset ; char * tmpasm = NULL ; int tmpfd = - 1 ; int sz , len ; ut8 * buf ; * ptr = '\\\\0' ; for ( ptr ++ ; * ptr == '<S2SV_blank>' ; ptr ++ ) { } if ( * ptr && ptr [ 1 ] == ':' ) { } else { ptr -- ; } arroba = ( ptr [ 0 ] && ptr [ 1 ] && ptr [ 2 ] ) ? strchr ( ptr + 2 , '@' ) : NULL ; repeat_arroba : if ( arroba ) { * arroba = 0 ; } if ( ptr [ 1 ] == '?' ) { helpCmdAt ( core ) ; } else if ( ptr [ 0 ] && ptr [ 1 ] == ':' && ptr [ 2 ] ) { usemyblock = true ; switch ( ptr [ 0 ] ) { case 'f' : f = r_file_slurp ( ptr + 2 , & sz ) ; if ( f ) { buf = malloc ( sz ) ; if ( buf ) { free ( core -> block ) ; core -> block = buf ; core -> blocksize = sz ; memcpy ( core -> block , f , sz ) ; } else { eprintf ( \"cannot<S2SV_blank>alloc<S2SV_blank>%d\" , sz ) ; } free ( f ) ; } else { eprintf ( \"cannot<S2SV_blank>open<S2SV_blank>\\'%s\\'\\\\n\" , ptr + 3 ) ; } break ; case 'r' : if ( ptr [ 1 ] == ':' ) { ut64 regval ; char * mander = strdup ( ptr + 2 ) ; char * sep = findSeparator ( mander ) ; if ( sep ) { char ch = * sep ; * sep = 0 ; regval = r_debug_reg_get ( core -> dbg , mander ) ; * sep = ch ; char * numexpr = r_str_newf ( \"0x%\" PFMT64x \"%s\" , regval , sep ) ; regval = r_num_math ( core -> num , numexpr ) ; free ( numexpr ) ; } else { regval = r_debug_reg_get ( core -> dbg , ptr + 2 ) ; } r_core_seek ( core , regval , 1 ) ; free ( mander ) ; } break ; case 'b' : tmpbits = strdup ( r_config_get ( core -> config , \"asm.bits\" ) ) ; r_config_set_i ( core -> config , \"asm.bits\" , r_num_math ( core -> num , ptr + 2 ) ) ; break ; case 'i' : { ut64 addr = r_num_math ( core -> num , ptr + 2 ) ; if ( addr ) { r_core_cmdf ( core , \"so<S2SV_blank>%s\" , ptr + 2 ) ; } } break ; case 'e' : tmpeval = parse_tmp_evals ( core , ptr + 2 ) ; break ; case 'x' : if ( ptr [ 1 ] == ':' ) { buf = malloc ( strlen ( ptr + 2 ) + 1 ) ; if ( buf ) { len = r_hex_str2bin ( ptr + 2 , buf ) ; r_core_block_size ( core , R_ABS ( len ) ) ; memcpy ( core -> block , buf , core -> blocksize ) ; core -> fixedblock = true ; free ( buf ) ; } else { eprintf ( \"cannot<S2SV_blank>allocate\\\\n\" ) ; } } else { eprintf ( \"Invalid<S2SV_blank>@x:<S2SV_blank>syntax\\\\n\" ) ; } break ; case 'k' : { char * out = sdb_querys ( core -> sdb , NULL , 0 , ptr + ( ( ptr [ 1 ] ) ? 2 : 1 ) ) ; if ( out ) { r_core_seek ( core , r_num_math ( core -> num , out ) , 1 ) ; free ( out ) ; } } break ; case 'o' : if ( ptr [ 1 ] == ':' ) { tmpfd = core -> io -> raised ; r_io_raise ( core -> io , atoi ( ptr + 2 ) ) ; } break ; case 'a' : if ( ptr [ 1 ] == ':' ) { char * q = strchr ( ptr + 2 , ':' ) ; tmpasm = strdup ( r_config_get ( core -> config , \"asm.arch\" ) ) ; if ( q ) { * q ++ = 0 ; tmpbits = r_config_get ( core -> config , \"asm.bits\" ) ; r_config_set ( core -> config , \"asm.bits\" , q ) ; } r_config_set ( core -> config , \"asm.arch\" , ptr + 2 ) ; } else { eprintf ( \"Usage:<S2SV_blank>pd<S2SV_blank>10<S2SV_blank>@a:arm:32\\\\n\" ) ; } break ; case 's' : len = strlen ( ptr + 2 ) ; r_core_block_size ( core , len ) ; memcpy ( core -> block , ptr + 2 , len ) ; break ; default : goto ignore ; } * ptr = '@' ; goto next_arroba ; } ignore : ptr = r_str_trim_head ( ptr + 1 ) ; ptr -- ; cmd = r_str_clean ( cmd ) ; if ( ptr2 ) { if ( strlen ( ptr + 1 ) == 13 && strlen ( ptr2 + 1 ) == 6 && ! memcmp ( ptr + 1 , \"0x\" , 2 ) && ! memcmp ( ptr2 + 1 , \"0x\" , 2 ) ) { } else if ( strlen ( ptr + 1 ) == 9 && strlen ( ptr2 + 1 ) == 4 ) { } else { * ptr2 = '\\\\0' ; if ( ! ptr2 [ 1 ] ) { goto fail ; } r_core_block_size ( core , r_num_math ( core -> num , ptr2 + 1 ) ) ; } } offstr = r_str_trim_head ( ptr + 1 ) ; addr = r_num_math ( core -> num , offstr ) ; if ( isalpha ( ( unsigned char ) ptr [ 1 ] ) && ! addr ) { if ( ! r_flag_get ( core -> flags , ptr + 1 ) ) { eprintf ( \"Invalid<S2SV_blank>address<S2SV_blank>(%s)\\\\n\" , ptr + 1 ) ; goto fail ; } } else { char ch = * offstr ; if ( ch == '-' || ch == '+' ) { addr = core -> offset + addr ; } } next_arroba : if ( arroba ) { ptr = arroba ; arroba = NULL ; goto repeat_arroba ; } if ( ptr [ 1 ] == '@' ) { if ( ptr [ 2 ] == '@' ) { char * rule = ptr + 3 ; while ( * rule && * rule == '<S2SV_blank>' ) rule ++ ; ret = r_core_cmd_foreach3 ( core , cmd , rule ) ; } else { ret = r_core_cmd_foreach ( core , cmd , ptr + 2 ) ; } } else { bool tmpseek = false ; const char * fromvars [ ] = { \"anal.from\" , \"diff.from\" , \"graph.from\" , \"io.buffer.from\" , \"lines.from\" , \"search.from\" , \"zoom.from\" , NULL } ; const char * tovars [ ] = { \"anal.to\" , \"diff.to\" , \"graph.to\" , \"io.buffer.to\" , \"lines.to\" , \"search.to\" , \"zoom.to\" , NULL } ; ut64 curfrom [ R_ARRAY_SIZE ( fromvars ) - 1 ] , curto [ R_ARRAY_SIZE ( tovars ) - 1 ] ; if ( ptr [ 1 ] == '.' && ptr [ 2 ] == '.' ) { char * range = ptr + 3 ; char * p = strchr ( range , '<S2SV_blank>' ) ; if ( ! p ) { eprintf ( \"Usage:<S2SV_blank>/<S2SV_blank>ABCD<S2SV_blank>@..0x1000<S2SV_blank>0x3000\\\\n\" ) ; free ( tmpeval ) ; free ( tmpasm ) ; goto fail ; } * p = '\\\\x00' ; ut64 from = r_num_math ( core -> num , range ) ; ut64 to = r_num_math ( core -> num , p + 1 ) ; for ( i = 0 ; fromvars [ i ] ; i ++ ) { curfrom [ i ] = r_config_get_i ( core -> config , fromvars [ i ] ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { curto [ i ] = r_config_get_i ( core -> config , tovars [ i ] ) ; } for ( i = 0 ; fromvars [ i ] ; i ++ ) { r_config_set_i ( core -> config , fromvars [ i ] , from ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { r_config_set_i ( core -> config , tovars [ i ] , to ) ; } tmpseek = true ; } if ( usemyblock ) { if ( addr != UT64_MAX ) { core -> offset = addr ; } ret = r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) ; } else { if ( addr != UT64_MAX ) { if ( ! ptr [ 1 ] || r_core_seek ( core , addr , 1 ) ) { r_core_block_read ( core ) ; ret = r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) ; } else { ret = 0 ; } } } if ( tmpseek ) { for ( i = 0 ; fromvars [ i ] ; i ++ ) { r_config_set_i ( core -> config , fromvars [ i ] , curfrom [ i ] ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { r_config_set_i ( core -> config , tovars [ i ] , curto [ i ] ) ; } } } if ( ptr2 ) { * ptr2 = '!' ; r_core_block_size ( core , tmpbsz ) ; } if ( tmpasm ) { r_config_set ( core -> config , \"asm.arch\" , tmpasm ) ; tmpasm = NULL ; } if ( tmpfd != - 1 ) { r_io_raise ( core -> io , tmpfd ) ; } if ( tmpbits ) { r_config_set ( core -> config , \"asm.bits\" , tmpbits ) ; tmpbits = NULL ; } if ( tmpeval ) { r_core_cmd0 ( core , tmpeval ) ; R_FREE ( tmpeval ) ; } r_core_seek ( core , tmpoff , 1 ) ; * ptr = '@' ; rc = ret ; goto beach ; } rc = cmd ? r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) : false ; beach : if ( scr_html != - 1 ) { r_cons_flush ( ) ; r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } core -> fixedblock = false ; return rc ; fail : rc = - 1 ; goto beach ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; p = cmd [ 0 ] ? <S2SV_ModStart> + 1 ) : NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16921\n\n```\nCWE-665 static struct ib_ucontext * hns_roce_alloc_ucontext ( struct ib_device * ib_dev , struct ib_udata * udata ) { int ret = 0 ; struct hns_roce_ucontext * context ; <S2SV_StartBug> struct hns_roce_ib_alloc_ucontext_resp resp ; <S2SV_EndBug> struct hns_roce_dev * hr_dev = to_hr_dev ( ib_dev ) ; resp . qp_tab_size = hr_dev -> caps . num_qps ; context = kmalloc ( sizeof ( * context ) , GFP_KERNEL ) ; if ( ! context ) return ERR_PTR ( - ENOMEM ) ; ret = hns_roce_uar_alloc ( hr_dev , & context -> uar ) ; if ( ret ) goto error_fail_uar_alloc ; if ( hr_dev -> caps . flags & HNS_ROCE_CAP_FLAG_RECORD_DB ) { INIT_LIST_HEAD ( & context -> page_list ) ; mutex_init ( & context -> page_mutex ) ; } ret = ib_copy_to_udata ( udata , & resp , sizeof ( resp ) ) ; if ( ret ) goto error_fail_copy_to_udata ; return & context -> ibucontext ; error_fail_copy_to_udata : hns_roce_uar_free ( hr_dev , & context -> uar ) ; error_fail_uar_alloc : kfree ( context ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct hns_roce_ib_alloc_ucontext_resp resp = { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16276\n\n```\nCWE-20 static ssize_t yurex_read ( struct file * file , char __user * buffer , size_t count , loff_t * ppos ) { struct usb_yurex * dev ; <S2SV_StartBug> int retval = 0 ; <S2SV_EndBug> int bytes_read = 0 ; char in_buffer [ 20 ] ; unsigned long flags ; dev = file -> private_data ; mutex_lock ( & dev -> io_mutex ) ; if ( ! dev -> interface ) { <S2SV_StartBug> retval = - ENODEV ; <S2SV_EndBug> goto exit ; } spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_StartBug> bytes_read = snprintf ( in_buffer , 20 , \"%lld\\\\n\" , dev -> bbu ) ; <S2SV_EndBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_StartBug> if ( * ppos < bytes_read ) { <S2SV_EndBug> if ( copy_to_user ( buffer , in_buffer + * ppos , bytes_read - * ppos ) ) retval = - EFAULT ; else { retval = bytes_read - * ppos ; * ppos += bytes_read ; } } exit : mutex_unlock ( & dev -> io_mutex ) ; <S2SV_StartBug> return retval ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ; int len <S2SV_ModEnd> = 0 ; <S2SV_ModStart> interface ) { mutex_unlock ( & dev -> io_mutex ) ; return - ENODEV <S2SV_ModEnd> ; } spin_lock_irqsave <S2SV_ModStart> flags ) ; len <S2SV_ModEnd> = snprintf ( <S2SV_ModStart> flags ) ; <S2SV_ModEnd> mutex_unlock ( & <S2SV_ModStart> ) ; return simple_read_from_buffer ( buffer , count , ppos , in_buffer , len ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14882\n\n```\nCWE-125 static void rpl_dao_print ( netdissect_options * ndo , const u_char * bp , u_int length ) { const struct nd_rpl_dao * dao = ( const struct nd_rpl_dao * ) bp ; const char * dagid_str = \"<elided>\" ; ND_TCHECK ( * dao ) ; if ( length < ND_RPL_DAO_MIN_LEN ) goto tooshort ; bp += ND_RPL_DAO_MIN_LEN ; length -= ND_RPL_DAO_MIN_LEN ; if ( RPL_DAO_D ( dao -> rpl_flags ) ) { ND_TCHECK2 ( dao -> rpl_dagid , DAGID_LEN ) ; if ( length < DAGID_LEN ) goto tooshort ; dagid_str = ip6addr_string ( ndo , dao -> rpl_dagid ) ; bp += DAGID_LEN ; length -= DAGID_LEN ; } ND_PRINT ( ( ndo , \"<S2SV_blank>[dagid:%s,seq:%u,instance:%u%s%s,%02x]\" , dagid_str , dao -> rpl_daoseq , dao -> rpl_instanceid , RPL_DAO_K ( dao -> rpl_flags ) ? \",acK\" : \"\" , RPL_DAO_D ( dao -> rpl_flags ) ? \",Dagid\" : \"\" , dao -> rpl_flags ) ) ; if ( ndo -> ndo_vflag > 1 ) { const struct rpl_dio_genoption * opt = ( const struct rpl_dio_genoption * ) bp ; rpl_dio_printopt ( ndo , opt , length ) ; } return ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>[|truncated]\" ) ) ; <S2SV_EndBug> return ; tooshort : ND_PRINT ( ( ndo , \"<S2SV_blank>[|length<S2SV_blank>too<S2SV_blank>short]\" ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"%s\" , rpl_tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-23930\n\n```\nCWE-476 int mp4boxMain ( int argc , char * * argv ) { u32 i , j ; const char * gpac_profile = \"0\" ; GF_Err e = GF_OK ; nb_tsel_acts = nb_add = nb_cat = nb_track_act = nb_sdp_ex = max_ptime = nb_meta_act = rtp_rate = major_brand = nb_alt_brand_add = nb_alt_brand_rem = car_dur = minor_version = 0 ; split_duration = 0.0 ; split_start = - 1.0 ; interleaving_time = 0 ; dash_duration = dash_subduration = 0.0 ; import_fps . num = import_fps . den = 0 ; import_flags = 0 ; split_size = 0 ; movie_time = 0 ; dump_nal = dump_saps = dump_saps_mode = force_new = 0 ; FullInter = HintInter = encode = do_scene_log = old_interleave = do_saf = do_hash = verbose = do_mpd_rip = merge_vtt_cues = get_nb_tracks = GF_FALSE ; # ifndef GPAC_DISABLE_SCENE_DUMP dump_mode = GF_SM_DUMP_NONE ; # endif Frag = force_ocr = remove_sys_tracks = agg_samples = remove_hint = keep_sys_tracks = remove_root_od = single_group = clean_groups = compress_moov = GF_FALSE ; conv_type = HintIt = needSave = print_sdp = regular_iod = dump_std = open_edit = dump_rtp = dump_cr = dump_srt = dump_ttxt = dump_m2ts = dump_cart = import_subtitle = force_cat = pack_wgt = dash_live = GF_FALSE ; no_fragments_defaults = GF_FALSE ; single_traf_per_moof = hls_clock = GF_FALSE ; tfdt_per_traf = GF_FALSE ; dump_nal_type = 0 ; dump_isom = 0 ; print_info = 0 ; align_cat = GF_TRUE ; subsegs_per_sidx = 0 ; track_dump_type = 0 ; crypt = 0 ; time_shift_depth = 0 ; file = NULL ; itunes_tags = pes_dump = NULL ; seg_name = dash_ctx_file = NULL ; compress_top_boxes = NULL ; initial_moof_sn = 0 ; initial_tfdt = 0 ; # ifndef GPAC_DISABLE_SCENE_ENCODER memset ( & smenc_opts , 0 , sizeof ( smenc_opts ) ) ; # endif trackID = stat_level = hint_flags = 0 ; program_number = 0 ; info_track_id = 0 ; do_flat = 0 ; inName = outName = mediaSource = input_ctx = output_ctx = drm_file = avi2raw = cprt = chap_file = pack_file = raw_cat = high_dynamc_range_filename = use_init_seg = box_patch_filename = NULL ; # ifndef GPAC_DISABLE_SWF_IMPORT swf_flags = GF_SM_SWF_SPLIT_TIMELINE ; # endif swf_flatten_angle = 0.0f ; tmpdir = NULL ; for ( i = 1 ; i < ( u32 ) argc ; i ++ ) { if ( ! strcmp ( argv [ i ] , \"-mem-track\" ) || ! strcmp ( argv [ i ] , \"-mem-track-stack\" ) ) { # ifdef GPAC_MEMORY_TRACKING mem_track = ! strcmp ( argv [ i ] , \"-mem-track-stack\" ) ? GF_MemTrackerBackTrace : GF_MemTrackerSimple ; # else fprintf ( stderr , \"WARNING<S2SV_blank>-<S2SV_blank>GPAC<S2SV_blank>not<S2SV_blank>compiled<S2SV_blank>with<S2SV_blank>Memory<S2SV_blank>Tracker<S2SV_blank>-<S2SV_blank>ignoring<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , argv [ i ] ) ; # endif break ; } else if ( ! strcmp ( argv [ i ] , \"-p\" ) ) { if ( i + 1 < ( u32 ) argc ) gpac_profile = argv [ i + 1 ] ; else { fprintf ( stderr , \"Bad<S2SV_blank>argument<S2SV_blank>for<S2SV_blank>-p,<S2SV_blank>expecting<S2SV_blank>profile<S2SV_blank>name<S2SV_blank>but<S2SV_blank>no<S2SV_blank>more<S2SV_blank>args\\\\n\" ) ; return 1 ; } } else if ( ! strncmp ( argv [ i ] , \"-p=\" , 3 ) ) gpac_profile = argv [ i ] + 3 ; } # ifdef _TWO_DIGIT_EXPONENT _set_output_format ( _TWO_DIGIT_EXPONENT ) ; # endif gf_sys_init ( mem_track , gpac_profile ) ; if ( argc < 2 ) { fprintf ( stderr , \"Not<S2SV_blank>enough<S2SV_blank>arguments<S2SV_blank>-<S2SV_blank>check<S2SV_blank>usage<S2SV_blank>with<S2SV_blank>-h\\\\n\" \"MP4Box<S2SV_blank>-<S2SV_blank>GPAC<S2SV_blank>version<S2SV_blank>%s\\\\n\" \"%s\\\\n\" , gf_gpac_version ( ) , gf_gpac_copyright ( ) ) ; gf_sys_close ( ) ; return 0 ; } helpout = stdout ; i = mp4box_parse_args ( argc , argv ) ; if ( i ) { return mp4box_cleanup ( i - 1 ) ; } if ( ! inName && dump_std ) inName = \"std\" ; if ( ! inName ) { if ( has_next_arg ) { fprintf ( stderr , \"Broken<S2SV_blank>argument<S2SV_blank>specifier<S2SV_blank>or<S2SV_blank>file<S2SV_blank>name<S2SV_blank>missing<S2SV_blank>-<S2SV_blank>check<S2SV_blank>usage<S2SV_blank>with<S2SV_blank>-h\\\\n\" ) ; } else { PrintUsage ( ) ; } return mp4box_cleanup ( 1 ) ; } if ( ! strcmp ( inName , \"std\" ) ) dump_std = 2 ; if ( ! strcmp ( inName , \"stdb\" ) ) { inName = \"std\" ; dump_std = 1 ; } if ( ! interleaving_time ) { if ( dash_duration ) interleaving_time = dash_duration ; else if ( ! do_flat ) { interleaving_time = DEFAULT_INTERLEAVING_IN_SEC ; } } if ( dump_std ) outName = \"std\" ; if ( dump_std == 2 ) { # ifdef WIN32 if ( _setmode ( _fileno ( stdout ) , _O_BINARY ) == - 1 ) # else if ( freopen ( NULL , \"wb\" , stdout ) == NULL ) # endif { fprintf ( stderr , \"Fatal<S2SV_blank>error:<S2SV_blank>cannot<S2SV_blank>reopen<S2SV_blank>stdout<S2SV_blank>in<S2SV_blank>binary<S2SV_blank>mode.\\\\n\" ) ; return mp4box_cleanup ( 1 ) ; } } # if ! defined ( GPAC_DISABLE_STREAMING ) && ! defined ( GPAC_DISABLE_SENG ) if ( live_scene ) { int ret = live_session ( argc , argv ) ; return mp4box_cleanup ( ret ) ; } # endif GF_LOG_Level level = verbose ? GF_LOG_DEBUG : GF_LOG_INFO ; gf_log_set_tool_level ( GF_LOG_CONTAINER , level ) ; gf_log_set_tool_level ( GF_LOG_SCENE , level ) ; gf_log_set_tool_level ( GF_LOG_PARSER , level ) ; gf_log_set_tool_level ( GF_LOG_AUTHOR , level ) ; gf_log_set_tool_level ( GF_LOG_CODING , level ) ; gf_log_set_tool_level ( GF_LOG_DASH , level ) ; # ifdef GPAC_MEMORY_TRACKING if ( mem_track ) gf_log_set_tool_level ( GF_LOG_MEMORY , level ) ; # endif e = gf_sys_set_args ( argc , ( const char * * ) argv ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>assigning<S2SV_blank>libgpac<S2SV_blank>arguments:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; return mp4box_cleanup ( 1 ) ; } if ( raw_cat ) { char chunk [ 4096 ] ; FILE * fin , * fout ; s64 to_copy , done ; fin = gf_fopen ( raw_cat , \"rb\" ) ; if ( ! fin ) return mp4box_cleanup ( 1 ) ; fout = gf_fopen ( inName , \"a+b\" ) ; if ( ! fout ) { gf_fclose ( fin ) ; return mp4box_cleanup ( 1 ) ; } gf_fseek ( fin , 0 , SEEK_END ) ; to_copy = gf_ftell ( fin ) ; gf_fseek ( fin , 0 , SEEK_SET ) ; done = 0 ; while ( 1 ) { u32 nb_bytes = ( u32 ) gf_fread ( chunk , 4096 , fin ) ; gf_fwrite ( chunk , nb_bytes , fout ) ; done += nb_bytes ; fprintf ( stderr , \"Appending<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>%02.2f<S2SV_blank>done\\\\r\" , raw_cat , 100.0 * done / to_copy ) ; if ( done >= to_copy ) break ; } gf_fclose ( fin ) ; gf_fclose ( fout ) ; return mp4box_cleanup ( 0 ) ; } if ( compress_top_boxes ) { if ( size_top_box ) { u64 top_size = do_size_top_boxes ( inName , compress_top_boxes , size_top_box ) ; fprintf ( stdout , LLU \"\\\\n\" , top_size ) ; return mp4box_cleanup ( e ? 1 : 0 ) ; } else { e = do_compress_top_boxes ( inName , outName , compress_top_boxes , comp_top_box_version , comp_lzma ) ; return mp4box_cleanup ( e ? 1 : 0 ) ; } } if ( do_mpd_rip ) { e = rip_mpd ( inName , outName ) ; return mp4box_cleanup ( e ? 1 : 0 ) ; } # ifndef GPAC_DISABLE_CORE_TOOLS if ( do_wget != NULL ) { e = gf_dm_wget ( do_wget , inName , 0 , 0 , NULL ) ; if ( e != GF_OK ) { fprintf ( stderr , \"Cannot<S2SV_blank>retrieve<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , do_wget , gf_error_to_string ( e ) ) ; return mp4box_cleanup ( 1 ) ; } return mp4box_cleanup ( 0 ) ; } # endif if ( udp_dest ) { GF_Socket * sock = gf_sk_new ( GF_SOCK_TYPE_UDP ) ; u16 port = 2345 ; char * sep = strrchr ( udp_dest , ':' ) ; if ( sep ) { sep [ 0 ] = 0 ; port = atoi ( sep + 1 ) ; } e = gf_sk_bind ( sock , \"127.0.0.1\" , 0 , udp_dest , port , 0 ) ; if ( sep ) sep [ 0 ] = ':' ; if ( e ) fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>bind<S2SV_blank>socket<S2SV_blank>to<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , udp_dest , gf_error_to_string ( e ) ) ; else { e = gf_sk_send ( sock , ( u8 * ) inName , ( u32 ) strlen ( inName ) ) ; if ( e ) fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>datagram:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; } gf_sk_del ( sock ) ; return 0 ; } # ifndef GPAC_DISABLE_MPD if ( do_mpd ) { Bool remote = GF_FALSE ; GF_MPD * mpd ; char * mpd_base_url = NULL ; if ( ! strnicmp ( inName , \"http://\" , 7 ) || ! strnicmp ( inName , \"https://\" , 8 ) ) { # if ! defined ( GPAC_DISABLE_CORE_TOOLS ) e = gf_dm_wget ( inName , \"tmp_main.m3u8\" , 0 , 0 , & mpd_base_url ) ; if ( e != GF_OK ) { fprintf ( stderr , \"Cannot<S2SV_blank>retrieve<S2SV_blank>M3U8<S2SV_blank>(%s):<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( e ) ) ; if ( mpd_base_url ) gf_free ( mpd_base_url ) ; return mp4box_cleanup ( 1 ) ; } remote = GF_TRUE ; # else gf_free ( mpd_base_url ) ; fprintf ( stderr , \"HTTP<S2SV_blank>Downloader<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>this<S2SV_blank>build\\\\n\" ) ; return mp4box_cleanup ( 1 ) ; # endif if ( outName ) strcpy ( outfile , outName ) ; else { const char * sep = gf_file_basename ( inName ) ; char * ext = gf_file_ext_start ( sep ) ; if ( ext ) ext [ 0 ] = 0 ; sprintf ( outfile , \"%s.mpd\" , sep ) ; if ( ext ) ext [ 0 ] = '.' ; } } else { if ( outName ) strcpy ( outfile , outName ) ; else { char * dst = strdup ( inName ) ; char * ext = strstr ( dst , \".m3u8\" ) ; if ( ext ) ext [ 0 ] = 0 ; sprintf ( outfile , \"%s.mpd\" , dst ) ; gf_free ( dst ) ; } } mpd = gf_mpd_new ( ) ; if ( ! mpd ) { e = GF_OUT_OF_MEM ; fprintf ( stderr , \"[DASH]<S2SV_blank>Error:<S2SV_blank>MPD<S2SV_blank>creation<S2SV_blank>problem<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; mp4box_cleanup ( 1 ) ; } FILE * f = gf_fopen ( remote ? \"tmp_main.m3u8\" : inName , \"r\" ) ; u32 manif_type = 0 ; if ( f ) { char szDATA [ 1000 ] ; s32 read ; szDATA [ 999 ] = 0 ; read = ( s32 ) gf_fread ( szDATA , 999 , f ) ; if ( read < 0 ) read = 0 ; szDATA [ read ] = 0 ; gf_fclose ( f ) ; if ( strstr ( szDATA , \"SmoothStreamingMedia\" ) ) manif_type = 2 ; else if ( strstr ( szDATA , \"#EXTM3U\" ) ) manif_type = 1 ; } if ( manif_type == 1 ) { e = gf_m3u8_to_mpd ( remote ? \"tmp_main.m3u8\" : inName , mpd_base_url ? mpd_base_url : inName , outfile , 0 , \"video/mp2t\" , GF_TRUE , use_url_template , segment_timeline , NULL , mpd , GF_TRUE , GF_TRUE ) ; } else if ( manif_type == 2 ) { e = gf_mpd_smooth_to_mpd ( remote ? \"tmp_main.m3u8\" : inName , mpd , mpd_base_url ? mpd_base_url : inName ) ; } else { e = GF_NOT_SUPPORTED ; } if ( ! e ) gf_mpd_write_file ( mpd , outfile ) ; if ( mpd ) gf_mpd_del ( mpd ) ; if ( mpd_base_url ) gf_free ( mpd_base_url ) ; if ( remote ) { gf_file_delete ( \"tmp_main.m3u8\" ) ; } if ( e != GF_OK ) { fprintf ( stderr , \"Error<S2SV_blank>converting<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>MPD<S2SV_blank>(%s):<S2SV_blank>%s\\\\n\" , ( manif_type == 1 ) ? \"HLS\" : \"Smooth\" , inName , outfile , gf_error_to_string ( e ) ) ; return mp4box_cleanup ( 1 ) ; } else { fprintf ( stderr , \"Done<S2SV_blank>converting<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>MPD<S2SV_blank>(%s)\\\\n\" , ( manif_type == 1 ) ? \"HLS\" : \"Smooth\" , inName , outfile ) ; return mp4box_cleanup ( 0 ) ; } } # endif if ( dash_duration && ! nb_dash_inputs ) { dash_inputs = set_dash_input ( dash_inputs , inName , & nb_dash_inputs ) ; } if ( do_saf && ! encode ) { switch ( get_file_type_by_ext ( inName ) ) { case GF_FILE_TYPE_BT_WRL_X3DV : case GF_FILE_TYPE_XMT_X3D : case GF_FILE_TYPE_SVG : encode = GF_TRUE ; break ; case GF_FILE_TYPE_NOT_SUPPORTED : case GF_FILE_TYPE_ISO_MEDIA : case GF_FILE_TYPE_SWF : case GF_FILE_TYPE_LSR_SAF : break ; } } # ifndef GPAC_DISABLE_SCENE_DUMP if ( dump_mode == GF_SM_DUMP_SVG ) { if ( strstr ( inName , \".srt\" ) || strstr ( inName , \".ttxt\" ) ) import_subtitle = 2 ; } # endif if ( import_subtitle && ! trackID ) { # ifndef GPAC_DISABLE_MEDIA_IMPORT GF_MediaImporter import ; file = gf_isom_open ( \"ttxt_convert\" , GF_ISOM_OPEN_WRITE , NULL ) ; if ( timescale && file ) gf_isom_set_timescale ( file , timescale ) ; memset ( & import , 0 , sizeof ( GF_MediaImporter ) ) ; import . dest = file ; import . in_name = inName ; e = gf_media_import ( & import ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>importing<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( e ) ) ; gf_isom_delete ( file ) ; gf_file_delete ( \"ttxt_convert\" ) ; return mp4box_cleanup ( 1 ) ; } strcpy ( outfile , inName ) ; if ( strchr ( outfile , '.' ) ) { while ( outfile [ strlen ( outfile ) - 1 ] != '.' ) outfile [ strlen ( outfile ) - 1 ] = 0 ; outfile [ strlen ( outfile ) - 1 ] = 0 ; } # ifndef GPAC_DISABLE_ISOM_DUMP dump_isom_timed_text ( file , gf_isom_get_track_id ( file , 1 ) , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , GF_TRUE , ( import_subtitle == 2 ) ? GF_TEXTDUMPTYPE_SVG : ( dump_srt ? GF_TEXTDUMPTYPE_SRT : GF_TEXTDUMPTYPE_TTXT ) ) ; # endif gf_isom_delete ( file ) ; gf_file_delete ( \"ttxt_convert\" ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>converting<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( e ) ) ; return mp4box_cleanup ( 1 ) ; } return mp4box_cleanup ( 0 ) ; # else fprintf ( stderr , \"Feature<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return mp4box_cleanup ( 1 ) ; # endif } # if ! defined ( GPAC_DISABLE_MEDIA_IMPORT ) && ! defined ( GPAC_DISABLE_ISOM_WRITE ) if ( nb_add || nb_cat ) { u32 ipass , nb_pass = 1 ; char * mux_args = NULL ; GF_FilterSession * fs = NULL ; if ( nb_add ) { GF_ISOOpenMode open_mode = GF_ISOM_OPEN_EDIT ; if ( force_new ) { open_mode = ( do_flat || ( force_new == 2 ) ) ? GF_ISOM_OPEN_WRITE : GF_ISOM_WRITE_EDIT ; } else { FILE * test = gf_fopen ( inName , \"rb\" ) ; if ( ! test ) { open_mode = ( do_flat ) ? GF_ISOM_OPEN_WRITE : GF_ISOM_WRITE_EDIT ; if ( ! outName ) outName = inName ; } else { gf_fclose ( test ) ; if ( ! gf_isom_probe_file ( inName ) ) { open_mode = ( do_flat ) ? GF_ISOM_OPEN_WRITE : GF_ISOM_WRITE_EDIT ; if ( ! outName ) outName = inName ; } } } open_edit = do_flat ? GF_FALSE : GF_TRUE ; file = gf_isom_open ( inName , open_mode , tmpdir ) ; if ( ! file ) { fprintf ( stderr , \"Cannot<S2SV_blank>open<S2SV_blank>destination<S2SV_blank>file<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( gf_isom_last_error ( NULL ) ) ) ; return mp4box_cleanup ( 1 ) ; } if ( freeze_box_order ) gf_isom_freeze_order ( file ) ; } if ( do_flat && interleaving_time ) { char szSubArg [ 100 ] ; gf_isom_set_storage_mode ( file , GF_ISOM_STORE_FASTSTART ) ; do_flat = 2 ; nb_pass = 2 ; fs = gf_fs_new_defaults ( 0 ) ; if ( ! fs ) { fprintf ( stderr , \"Error<S2SV_blank>creating<S2SV_blank>filter<S2SV_blank>session\\\\n\" ) ; gf_isom_delete ( file ) ; return mp4box_cleanup ( 1 ) ; } gf_dynstrcat ( & mux_args , \"mp4mx:importer:store=fstart\" , \":\" ) ; sprintf ( szSubArg , \"file=%p\" , file ) ; gf_dynstrcat ( & mux_args , szSubArg , \":\" ) ; sprintf ( szSubArg , \"cdur=%g\" , interleaving_time ) ; gf_dynstrcat ( & mux_args , szSubArg , \":\" ) ; } for ( ipass = 0 ; ipass < nb_pass ; ipass ++ ) { u32 tk_idx = 1 ; for ( i = 0 ; i < ( u32 ) argc ; i ++ ) { char * margs = NULL ; if ( ! strcmp ( argv [ i ] , \"-add\" ) ) { char * src = argv [ i + 1 ] ; while ( src ) { char * loc_src = src ; char * sep = NULL ; while ( 1 ) { char * opt_sep ; sep = strchr ( loc_src , '+' ) ; if ( ! sep ) break ; sep [ 0 ] = 0 ; if ( strstr ( src , \"://\" ) ) break ; opt_sep = gf_url_colon_suffix ( src ) ; if ( opt_sep ) opt_sep [ 0 ] = 0 ; if ( gf_file_exists ( src ) ) { if ( opt_sep ) opt_sep [ 0 ] = ':' ; break ; } if ( opt_sep ) opt_sep [ 0 ] = ':' ; sep [ 0 ] = '+' ; loc_src = sep + 1 ; } e = import_file ( file , src , import_flags , import_fps , agg_samples , fs , ( fs && ( ipass == 0 ) ) ? & margs : NULL , tk_idx ) ; tk_idx ++ ; if ( margs ) { gf_dynstrcat ( & mux_args , margs , \":\" ) ; gf_free ( margs ) ; } if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>importing<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , argv [ i + 1 ] , gf_error_to_string ( e ) ) ; gf_isom_delete ( file ) ; if ( fs ) gf_fs_del ( fs ) ; return mp4box_cleanup ( 1 ) ; } if ( sep ) { sep [ 0 ] = '+' ; src = sep + 1 ; } else { break ; } } i ++ ; } else if ( ! strcmp ( argv [ i ] , \"-cat\" ) || ! strcmp ( argv [ i ] , \"-catx\" ) || ! strcmp ( argv [ i ] , \"-catpl\" ) ) { if ( nb_pass == 2 ) { fprintf ( stderr , \"Cannot<S2SV_blank>cat<S2SV_blank>files<S2SV_blank>when<S2SV_blank>using<S2SV_blank>-newfs<S2SV_blank>mode\\\\n\" ) ; return mp4box_cleanup ( 1 ) ; } if ( ! file ) { u8 open_mode = GF_ISOM_OPEN_EDIT ; if ( force_new ) { open_mode = ( do_flat ) ? GF_ISOM_OPEN_WRITE : GF_ISOM_WRITE_EDIT ; } else { FILE * test = gf_fopen ( inName , \"rb\" ) ; if ( ! test ) { open_mode = ( do_flat ) ? GF_ISOM_OPEN_WRITE : GF_ISOM_WRITE_EDIT ; if ( ! outName ) outName = inName ; } else gf_fclose ( test ) ; } open_edit = GF_TRUE ; file = gf_isom_open ( inName , open_mode , tmpdir ) ; if ( ! file ) { fprintf ( stderr , \"Cannot<S2SV_blank>open<S2SV_blank>destination<S2SV_blank>file<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( gf_isom_last_error ( NULL ) ) ) ; return mp4box_cleanup ( 1 ) ; } } e = cat_isomedia_file ( file , argv [ i + 1 ] , import_flags , import_fps , agg_samples , tmpdir , force_cat , align_cat , ! strcmp ( argv [ i ] , \"-catx\" ) ? GF_TRUE : GF_FALSE , ! strcmp ( argv [ i ] , \"-catpl\" ) ? GF_TRUE : GF_FALSE ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>appending<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , argv [ i + 1 ] , gf_error_to_string ( e ) ) ; gf_isom_delete ( file ) ; return mp4box_cleanup ( 1 ) ; } i ++ ; } } if ( ( nb_pass == 2 ) && ! ipass ) { GF_Filter * mux_filter = gf_fs_load_filter ( fs , mux_args , NULL ) ; gf_free ( mux_args ) ; if ( ! mux_filter ) { fprintf ( stderr , \"Error<S2SV_blank>loadin<S2SV_blank>isobmff<S2SV_blank>mux<S2SV_blank>filter\\\\n\" ) ; gf_isom_delete ( file ) ; gf_fs_del ( fs ) ; return mp4box_cleanup ( 1 ) ; } e = gf_fs_run ( fs ) ; if ( e == GF_EOS ) e = GF_OK ; if ( ! e ) e = gf_fs_get_last_connect_error ( fs ) ; if ( ! e ) e = gf_fs_get_last_process_error ( fs ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>importing<S2SV_blank>sources:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; gf_isom_delete ( file ) ; gf_fs_del ( fs ) ; return mp4box_cleanup ( 1 ) ; } } } if ( fs ) { if ( fs_dump_flags & 1 ) gf_fs_print_stats ( fs ) ; if ( fs_dump_flags & 2 ) gf_fs_print_connections ( fs ) ; gf_fs_del ( fs ) ; } # ifndef GPAC_DISABLE_AV_PARSERS if ( ! keep_sys_tracks ) remove_systems_tracks ( file ) ; # endif needSave = GF_TRUE ; } # endif # if ! defined ( GPAC_DISABLE_ISOM_WRITE ) && ! defined ( GPAC_DISABLE_SCENE_ENCODER ) && ! defined ( GPAC_DISABLE_MEDIA_IMPORT ) else if ( chunk_mode ) { if ( ! inName ) { fprintf ( stderr , \"chunk<S2SV_blank>encoding<S2SV_blank>syntax:<S2SV_blank>[-outctx<S2SV_blank>outDump]<S2SV_blank>-inctx<S2SV_blank>inScene<S2SV_blank>auFile\\\\n\" ) ; return mp4box_cleanup ( 1 ) ; } e = EncodeFileChunk ( inName , outName ? outName : inName , input_ctx , output_ctx , tmpdir ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>encoding<S2SV_blank>chunk<S2SV_blank>file<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; return mp4box_cleanup ( 1 ) ; } goto exit ; } # endif else if ( encode ) { # if ! defined ( GPAC_DISABLE_ISOM_WRITE ) && ! defined ( GPAC_DISABLE_SCENE_ENCODER ) && ! defined ( GPAC_DISABLE_MEDIA_IMPORT ) FILE * logs = NULL ; if ( do_scene_log ) { char alogfile [ GF_MAX_PATH ] ; strcpy ( alogfile , inName ) ; if ( strchr ( alogfile , '.' ) ) { while ( alogfile [ strlen ( alogfile ) - 1 ] != '.' ) alogfile [ strlen ( alogfile ) - 1 ] = 0 ; alogfile [ strlen ( alogfile ) - 1 ] = 0 ; } strcat ( alogfile , \"_enc.logs\" ) ; logs = gf_fopen ( alogfile , \"wt\" ) ; } strcpy ( outfile , outName ? outName : inName ) ; if ( strchr ( outfile , '.' ) ) { while ( outfile [ strlen ( outfile ) - 1 ] != '.' ) outfile [ strlen ( outfile ) - 1 ] = 0 ; outfile [ strlen ( outfile ) - 1 ] = 0 ; } strcat ( outfile , \".mp4\" ) ; file = gf_isom_open ( outfile , GF_ISOM_WRITE_EDIT , tmpdir ) ; smenc_opts . mediaSource = mediaSource ? mediaSource : outfile ; e = EncodeFile ( inName , file , & smenc_opts , logs ) ; if ( logs ) gf_fclose ( logs ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; if ( do_saf ) { needSave = GF_FALSE ; open_edit = GF_FALSE ; } # endif } # ifndef GPAC_DISABLE_ISOM_WRITE else if ( pack_file ) { char * fileName = gf_url_colon_suffix ( pack_file ) ; if ( fileName && ( ( fileName - pack_file ) == 4 ) ) { fileName [ 0 ] = 0 ; file = package_file ( fileName + 1 , pack_file , tmpdir , pack_wgt ) ; fileName [ 0 ] = ':' ; } else { file = package_file ( pack_file , NULL , tmpdir , pack_wgt ) ; if ( ! file ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>package<S2SV_blank>file\\\\n\" ) ; return mp4box_cleanup ( 1 ) ; } } if ( ! outName ) outName = inName ; needSave = GF_TRUE ; open_edit = GF_TRUE ; } # endif if ( dash_duration ) { Bool del_file = GF_FALSE ; char szMPD [ GF_MAX_PATH ] , * sep ; char szStateFile [ GF_MAX_PATH ] ; Bool dyn_state_file = GF_FALSE ; u32 do_abort = 0 ; GF_DASHSegmenter * dasher = NULL ; if ( crypt ) { fprintf ( stderr , \"MP4Box<S2SV_blank>cannot<S2SV_blank>crypt<S2SV_blank>and<S2SV_blank>DASH<S2SV_blank>on<S2SV_blank>the<S2SV_blank>same<S2SV_blank>pass.<S2SV_blank>Please<S2SV_blank>encrypt<S2SV_blank>your<S2SV_blank>content<S2SV_blank>first.\\\\n\" ) ; return mp4box_cleanup ( 1 ) ; } strcpy ( outfile , outName ? outName : gf_url_get_resource_name ( inName ) ) ; sep = strrchr ( outfile , '.' ) ; if ( sep ) sep [ 0 ] = 0 ; if ( ! outName ) strcat ( outfile , \"_dash\" ) ; strcpy ( szMPD , outfile ) ; if ( outName && sep ) { sep [ 0 ] = '.' ; strcat ( szMPD , sep ) ; } else { strcat ( szMPD , \".mpd\" ) ; } if ( ( dash_subduration > 0 ) && ( dash_duration > dash_subduration ) ) { fprintf ( stderr , \"Warning:<S2SV_blank>-subdur<S2SV_blank>parameter<S2SV_blank>(%g<S2SV_blank>s)<S2SV_blank>should<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>segment<S2SV_blank>duration<S2SV_blank>(%g<S2SV_blank>s),<S2SV_blank>using<S2SV_blank>segment<S2SV_blank>duration<S2SV_blank>instead\\\\n\" , dash_subduration , dash_duration ) ; dash_subduration = dash_duration ; } if ( dash_mode && dash_live ) fprintf ( stderr , \"Live<S2SV_blank>DASH-ing<S2SV_blank>-<S2SV_blank>press<S2SV_blank>\\'q\\'<S2SV_blank>to<S2SV_blank>quit,<S2SV_blank>\\'s\\'<S2SV_blank>to<S2SV_blank>save<S2SV_blank>context<S2SV_blank>and<S2SV_blank>quit\\\\n\" ) ; if ( ! dash_ctx_file && dash_live ) { u32 r1 ; u64 add = ( u64 ) ( intptr_t ) & dasher ; add ^= gf_net_get_utc ( ) ; r1 = ( u32 ) add ^ ( u32 ) ( add / 0xFFFFFFFF ) ; r1 ^= gf_rand ( ) ; sprintf ( szStateFile , \"%s/dasher_%X.xml\" , gf_get_default_cache_directory ( ) , r1 ) ; dash_ctx_file = szStateFile ; dyn_state_file = GF_TRUE ; } else if ( dash_ctx_file ) { if ( force_new ) gf_file_delete ( dash_ctx_file ) ; } if ( dash_profile == GF_DASH_PROFILE_AUTO ) dash_profile = dash_mode ? GF_DASH_PROFILE_LIVE : GF_DASH_PROFILE_FULL ; if ( ! dash_mode ) { time_shift_depth = 0 ; mpd_update_time = 0 ; } else if ( ( dash_profile >= GF_DASH_PROFILE_MAIN ) && ! use_url_template && ! mpd_update_time ) { mpd_update_time = ( Double ) ( dash_subduration ? dash_subduration : dash_duration ) ; fprintf ( stderr , \"Using<S2SV_blank>default<S2SV_blank>MPD<S2SV_blank>refresh<S2SV_blank>of<S2SV_blank>%g<S2SV_blank>seconds\\\\n\" , mpd_update_time ) ; } if ( file && needSave ) { gf_isom_close ( file ) ; file = NULL ; del_file = GF_TRUE ; } dasher = gf_dasher_new ( szMPD , dash_profile , tmpdir , dash_scale , dash_ctx_file ) ; if ( ! dasher ) { return mp4box_cleanup ( 1 ) ; } e = gf_dasher_set_info ( dasher , dash_title , cprt , dash_more_info , dash_source , NULL ) ; if ( e ) { fprintf ( stderr , \"DASH<S2SV_blank>Error:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; gf_dasher_del ( dasher ) ; return mp4box_cleanup ( 1 ) ; } gf_dasher_set_start_date ( dasher , dash_start_date ) ; gf_dasher_set_location ( dasher , dash_source ) ; for ( i = 0 ; i < nb_mpd_base_urls ; i ++ ) { e = gf_dasher_add_base_url ( dasher , mpd_base_urls [ i ] ) ; if ( e ) { fprintf ( stderr , \"DASH<S2SV_blank>Error:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; gf_dasher_del ( dasher ) ; return mp4box_cleanup ( 1 ) ; } } if ( segment_timeline && ! use_url_template ) { fprintf ( stderr , \"DASH<S2SV_blank>Warning:<S2SV_blank>using<S2SV_blank>-segment-timeline<S2SV_blank>with<S2SV_blank>no<S2SV_blank>-url-template.<S2SV_blank>Forcing<S2SV_blank>URL<S2SV_blank>template.\\\\n\" ) ; use_url_template = GF_TRUE ; } e = gf_dasher_enable_url_template ( dasher , ( Bool ) use_url_template , seg_name , seg_ext , init_seg_ext ) ; if ( ! e ) e = gf_dasher_enable_segment_timeline ( dasher , segment_timeline ) ; if ( ! e ) e = gf_dasher_enable_single_segment ( dasher , single_segment ) ; if ( ! e ) e = gf_dasher_enable_single_file ( dasher , single_file ) ; if ( ! e ) e = gf_dasher_set_switch_mode ( dasher , bitstream_switching_mode ) ; if ( ! e ) e = gf_dasher_set_durations ( dasher , dash_duration , interleaving_time , dash_subduration ) ; if ( ! e ) e = gf_dasher_enable_rap_splitting ( dasher , seg_at_rap , frag_at_rap ) ; if ( ! e ) e = gf_dasher_set_segment_marker ( dasher , segment_marker ) ; if ( ! e ) e = gf_dasher_enable_sidx ( dasher , ( subsegs_per_sidx >= 0 ) ? 1 : 0 , ( u32 ) subsegs_per_sidx , daisy_chain_sidx , use_ssix ) ; if ( ! e ) e = gf_dasher_set_dynamic_mode ( dasher , dash_mode , mpd_update_time , time_shift_depth , mpd_live_duration ) ; if ( ! e ) e = gf_dasher_set_min_buffer ( dasher , min_buffer ) ; if ( ! e ) e = gf_dasher_set_ast_offset ( dasher , ast_offset_ms ) ; if ( ! e ) e = gf_dasher_enable_memory_fragmenting ( dasher , memory_frags ) ; if ( ! e ) e = gf_dasher_set_initial_isobmf ( dasher , initial_moof_sn , initial_tfdt ) ; if ( ! e ) e = gf_dasher_configure_isobmf_default ( dasher , no_fragments_defaults , pssh_mode , samplegroups_in_traf , single_traf_per_moof , tfdt_per_traf , mvex_after_traks , sdtp_in_traf ) ; if ( ! e ) e = gf_dasher_enable_utc_ref ( dasher , insert_utc ) ; if ( ! e ) e = gf_dasher_enable_real_time ( dasher , frag_real_time ) ; if ( ! e ) e = gf_dasher_set_content_protection_location_mode ( dasher , cp_location_mode ) ; if ( ! e ) e = gf_dasher_set_profile_extension ( dasher , dash_profile_extension ) ; if ( ! e ) e = gf_dasher_enable_cached_inputs ( dasher , no_cache ) ; if ( ! e ) e = gf_dasher_enable_loop_inputs ( dasher , ! no_loop ) ; if ( ! e ) e = gf_dasher_set_split_mode ( dasher , dash_split_mode ) ; if ( ! e ) e = gf_dasher_set_hls_clock ( dasher , hls_clock ) ; if ( ! e && dash_cues ) e = gf_dasher_set_cues ( dasher , dash_cues , strict_cues ) ; if ( ! e && fs_dump_flags ) e = gf_dasher_print_session_info ( dasher , fs_dump_flags ) ; for ( i = 0 ; i < nb_dash_inputs ; i ++ ) { if ( ! e ) e = gf_dasher_add_input ( dasher , & dash_inputs [ i ] ) ; } if ( e ) { fprintf ( stderr , \"DASH<S2SV_blank>Setup<S2SV_blank>Error:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; gf_dasher_del ( dasher ) ; return mp4box_cleanup ( 1 ) ; } dash_cumulated_time = 0 ; while ( 1 ) { if ( run_for && ( dash_cumulated_time >= run_for ) ) { fprintf ( stderr , \"Done<S2SV_blank>running,<S2SV_blank>computing<S2SV_blank>static<S2SV_blank>MPD\\\\n\" ) ; do_abort = 3 ; } dash_prev_time = gf_sys_clock ( ) ; if ( do_abort >= 2 ) { e = gf_dasher_set_dynamic_mode ( dasher , GF_DASH_DYNAMIC_LAST , 0 , time_shift_depth , mpd_live_duration ) ; } if ( ! e ) e = gf_dasher_process ( dasher ) ; if ( ! dash_live && ( e == GF_EOS ) ) { fprintf ( stderr , \"Nothing<S2SV_blank>to<S2SV_blank>dash,<S2SV_blank>too<S2SV_blank>early<S2SV_blank>...\\\\n\" ) ; e = GF_OK ; } if ( do_abort ) break ; if ( dash_live && ( e == GF_IO_ERR ) ) { fprintf ( stderr , \"Error<S2SV_blank>dashing<S2SV_blank>file<S2SV_blank>(%s)<S2SV_blank>but<S2SV_blank>continuing<S2SV_blank>...\\\\n\" , gf_error_to_string ( e ) ) ; e = GF_OK ; } if ( e ) break ; if ( dash_live ) { u64 ms_in_session = 0 ; u32 slept = gf_sys_clock ( ) ; u32 sleep_for = gf_dasher_next_update_time ( dasher , & ms_in_session ) ; fprintf ( stderr , \"Next<S2SV_blank>generation<S2SV_blank>scheduled<S2SV_blank>in<S2SV_blank>%u<S2SV_blank>ms<S2SV_blank>(DASH<S2SV_blank>time<S2SV_blank>\" LLU \"<S2SV_blank>ms)\\\\r\" , sleep_for , ms_in_session ) ; if ( run_for && ( ms_in_session >= run_for ) ) { dash_cumulated_time = 1 + run_for ; continue ; } while ( 1 ) { if ( gf_prompt_has_input ( ) ) { char c = ( char ) gf_prompt_get_char ( ) ; if ( c == 'X' ) { do_abort = 1 ; break ; } if ( c == 'q' ) { do_abort = 2 ; break ; } if ( c == 's' ) { do_abort = 3 ; break ; } } if ( dash_mode == GF_DASH_DYNAMIC_DEBUG ) { break ; } if ( ! sleep_for ) break ; gf_sleep ( sleep_for / 10 ) ; sleep_for = gf_dasher_next_update_time ( dasher , NULL ) ; if ( sleep_for <= 1 ) { dash_now_time = gf_sys_clock ( ) ; dash_cumulated_time += ( dash_now_time - dash_prev_time ) ; fprintf ( stderr , \"Slept<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>ms<S2SV_blank>before<S2SV_blank>generation,<S2SV_blank>dash<S2SV_blank>cumulated<S2SV_blank>time<S2SV_blank>%d\\\\n\" , dash_now_time - slept , dash_cumulated_time ) ; break ; } } } else { break ; } } gf_dasher_del ( dasher ) ; if ( ! run_for && dash_ctx_file && ( do_abort == 3 ) && ( dyn_state_file ) && ! gf_sys_is_test_mode ( ) ) { char szName [ 1024 ] ; fprintf ( stderr , \"Enter<S2SV_blank>file<S2SV_blank>name<S2SV_blank>to<S2SV_blank>save<S2SV_blank>dash<S2SV_blank>context:\\\\n\" ) ; if ( scanf ( \"%1023s\" , szName ) == 1 ) { gf_file_move ( dash_ctx_file , szName ) ; } } if ( e ) fprintf ( stderr , \"Error<S2SV_blank>DASHing<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; if ( file ) gf_isom_delete ( file ) ; if ( del_file ) gf_file_delete ( inName ) ; if ( e ) return mp4box_cleanup ( 1 ) ; goto exit ; } else if ( ! file && ! do_hash # ifndef GPAC_DISABLE_MEDIA_EXPORT && ! ( track_dump_type & GF_EXPORT_AVI_NATIVE ) # endif ) { FILE * st = gf_fopen ( inName , \"rb\" ) ; Bool file_exists = 0 ; GF_ISOOpenMode omode ; if ( st ) { file_exists = 1 ; gf_fclose ( st ) ; } switch ( get_file_type_by_ext ( inName ) ) { case 1 : omode = ( u8 ) ( force_new ? GF_ISOM_WRITE_EDIT : ( open_edit ? GF_ISOM_OPEN_EDIT : ( ( ( dump_isom > 0 ) || print_info ) ? GF_ISOM_OPEN_READ_DUMP : GF_ISOM_OPEN_READ ) ) ) ; if ( crypt ) { omode = GF_ISOM_OPEN_READ ; if ( use_init_seg ) file = gf_isom_open ( use_init_seg , GF_ISOM_OPEN_READ , tmpdir ) ; } if ( ! crypt && use_init_seg ) { file = gf_isom_open ( use_init_seg , GF_ISOM_OPEN_READ_DUMP , tmpdir ) ; if ( file ) { e = gf_isom_open_segment ( file , inName , 0 , 0 , 0 ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>opening<S2SV_blank>segment<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( e ) ) ; gf_isom_delete ( file ) ; file = NULL ; } } } if ( ! file ) file = gf_isom_open ( inName , omode , tmpdir ) ; if ( ! file && ( gf_isom_last_error ( NULL ) == GF_ISOM_INCOMPLETE_FILE ) && ! open_edit ) { u64 missing_bytes ; e = gf_isom_open_progressive ( inName , 0 , 0 , GF_FALSE , & file , & missing_bytes ) ; fprintf ( stderr , \"Truncated<S2SV_blank>file<S2SV_blank>-<S2SV_blank>missing<S2SV_blank>\" LLD \"<S2SV_blank>bytes\\\\n\" , missing_bytes ) ; } if ( ! file ) { if ( open_edit && nb_meta_act ) { file = gf_isom_open ( inName , GF_ISOM_WRITE_EDIT , tmpdir ) ; if ( ! outName && file ) outName = inName ; } if ( ! file ) { fprintf ( stderr , \"Error<S2SV_blank>opening<S2SV_blank>file<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( gf_isom_last_error ( NULL ) ) ) ; return mp4box_cleanup ( 1 ) ; } } if ( freeze_box_order ) gf_isom_freeze_order ( file ) ; break ; case 2 : case 3 : case 4 : case 5 : break ; case 6 : # ifndef GPAC_DISABLE_SCENE_DUMP if ( ( dump_mode == GF_SM_DUMP_LASER ) || ( dump_mode == GF_SM_DUMP_SVG ) ) { break ; } # endif default : if ( ! open_edit && file_exists && ! gf_isom_probe_file ( inName ) && track_dump_type ) { } # ifndef GPAC_DISABLE_ISOM_WRITE else if ( ! open_edit && file_exists # ifndef GPAC_DISABLE_SCENE_DUMP && dump_mode == GF_SM_DUMP_NONE # endif ) { # ifndef GPAC_DISABLE_MEDIA_IMPORT if ( dvbhdemux ) { GF_MediaImporter import ; file = gf_isom_open ( \"ttxt_convert\" , GF_ISOM_OPEN_WRITE , NULL ) ; memset ( & import , 0 , sizeof ( GF_MediaImporter ) ) ; import . dest = file ; import . in_name = inName ; import . flags = GF_IMPORT_MPE_DEMUX ; e = gf_media_import ( & import ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>importing<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( e ) ) ; gf_isom_delete ( file ) ; gf_file_delete ( \"ttxt_convert\" ) ; return mp4box_cleanup ( 1 ) ; } } # endif if ( dump_m2ts ) { # ifndef GPAC_DISABLE_MPEG2TS dump_mpeg2_ts ( inName , pes_dump , program_number ) ; # endif } else if ( dump_timestamps ) { # ifndef GPAC_DISABLE_MPEG2TS dump_mpeg2_ts ( inName , pes_dump , program_number ) ; # endif # ifndef GPAC_DISABLE_CORE_TOOLS } else if ( do_bin_xml ) { xml_bs_to_bin ( inName , outName , dump_std ) ; # endif } else if ( do_hash ) { hash_file ( inName , dump_std ) ; } else if ( print_info ) { # ifndef GPAC_DISABLE_MEDIA_IMPORT convert_file_info ( inName , info_track_id ) ; # endif } else { fprintf ( stderr , \"Input<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>an<S2SV_blank>MP4<S2SV_blank>file,<S2SV_blank>operation<S2SV_blank>not<S2SV_blank>allowed\\\\n\" , inName ) ; return mp4box_cleanup ( 1 ) ; } goto exit ; } # endif else if ( open_edit ) { file = gf_isom_open ( inName , GF_ISOM_WRITE_EDIT , tmpdir ) ; if ( ! outName && file ) outName = inName ; } else if ( ! file_exists ) { fprintf ( stderr , \"Error<S2SV_blank>creating<S2SV_blank>file<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , inName , gf_error_to_string ( GF_URL_ERROR ) ) ; return mp4box_cleanup ( 1 ) ; } else { fprintf ( stderr , \"Cannot<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>extension<S2SV_blank>not<S2SV_blank>supported\\\\n\" , inName ) ; return mp4box_cleanup ( 1 ) ; } } } if ( high_dynamc_range_filename ) { e = parse_high_dynamc_range_xml_desc ( file , high_dynamc_range_filename ) ; if ( e ) goto err_exit ; } if ( file && keep_utc && open_edit ) { gf_isom_keep_utc_times ( file , 1 ) ; } strcpy ( outfile , outName ? outName : inName ) ; { char * szExt = gf_file_ext_start ( outfile ) ; if ( szExt ) { if ( ! stricmp ( szExt , \".3gp\" ) || ! stricmp ( szExt , \".3gpp\" ) || ! stricmp ( szExt , \".3g2\" ) ) conv_type = GF_ISOM_CONV_TYPE_3GPP ; else if ( ! stricmp ( szExt , \".m4a\" ) || ! stricmp ( szExt , \".m4v\" ) ) conv_type = GF_ISOM_CONV_TYPE_IPOD ; else if ( ! stricmp ( szExt , \".psp\" ) ) conv_type = GF_ISOM_CONV_TYPE_PSP ; else if ( ! stricmp ( szExt , \".mov\" ) || ! stricmp ( szExt , \".qt\" ) ) conv_type = GF_ISOM_CONV_TYPE_MOV ; * szExt = 0 ; } } # ifndef GPAC_DISABLE_MEDIA_EXPORT if ( track_dump_type & GF_EXPORT_AVI_NATIVE ) { char szFile [ GF_MAX_PATH + 24 ] ; GF_MediaExporter mdump ; memset ( & mdump , 0 , sizeof ( mdump ) ) ; mdump . in_name = inName ; mdump . flags = GF_EXPORT_AVI_NATIVE ; mdump . trackID = trackID ; if ( dump_std ) { mdump . out_name = \"std\" ; } else if ( outName ) { mdump . out_name = outName ; } else if ( trackID > 2 ) { sprintf ( szFile , \"%s_audio%d\" , outfile , trackID - 1 ) ; mdump . out_name = szFile ; } else { sprintf ( szFile , \"%s_%s\" , outfile , ( trackID == 1 ) ? \"video\" : \"audio\" ) ; mdump . out_name = szFile ; } mdump . print_stats_graph = fs_dump_flags ; e = gf_media_export ( & mdump ) ; if ( e ) goto err_exit ; goto exit ; } if ( ! open_edit && track_dump_type && ! gf_isom_probe_file ( inName ) ) { GF_MediaExporter mdump ; char szFile [ GF_MAX_PATH + 24 ] ; for ( i = 0 ; i < nb_track_act ; i ++ ) { TrackAction * tka = & tracks [ i ] ; if ( tka -> act_type != TRAC_ACTION_RAW_EXTRACT ) continue ; memset ( & mdump , 0 , sizeof ( mdump ) ) ; mdump . in_name = inName ; mdump . flags = tka -> dump_type ; mdump . trackID = tka -> trackID ; mdump . sample_num = tka -> sample_num ; if ( outName ) { mdump . out_name = outName ; mdump . flags |= GF_EXPORT_MERGE ; } else if ( nb_track_act > 1 ) { sprintf ( szFile , \"%s_track%d\" , outfile , mdump . trackID ) ; mdump . out_name = szFile ; } else { mdump . out_name = outfile ; } mdump . print_stats_graph = fs_dump_flags ; e = gf_media_export ( & mdump ) ; if ( e ) goto err_exit ; } goto exit ; } # endif # ifndef GPAC_DISABLE_SCENE_DUMP if ( dump_mode != GF_SM_DUMP_NONE ) { e = dump_isom_scene ( inName , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , dump_mode , do_scene_log , no_odf_conf ) ; if ( e ) goto err_exit ; } # endif # ifndef GPAC_DISABLE_SCENE_STATS if ( stat_level ) dump_isom_scene_stats ( inName , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , stat_level ) ; # endif # ifndef GPAC_DISABLE_ISOM_HINTING if ( ! HintIt && print_sdp ) dump_isom_sdp ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE ) ; # endif if ( get_nb_tracks ) { fprintf ( stdout , \"%d\\\\n\" , gf_isom_get_track_count ( file ) ) ; } if ( print_info ) { if ( ! file ) { fprintf ( stderr , \"Cannot<S2SV_blank>print<S2SV_blank>info<S2SV_blank>on<S2SV_blank>a<S2SV_blank>non<S2SV_blank>ISOM<S2SV_blank>file<S2SV_blank>(%s)\\\\n\" , inName ) ; } else { if ( info_track_id ) DumpTrackInfo ( file , info_track_id , 1 , ( print_info == 2 ) ? GF_TRUE : GF_FALSE ) ; else DumpMovieInfo ( file ) ; } } # ifndef GPAC_DISABLE_ISOM_DUMP if ( dump_isom ) { e = dump_isom_xml ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , ( dump_isom == 2 ) ? GF_TRUE : GF_FALSE , merge_vtt_cues , use_init_seg ? GF_TRUE : GF_FALSE , ( dump_isom == 3 ) ? GF_TRUE : GF_FALSE ) ; if ( e ) goto err_exit ; } if ( dump_cr ) dump_isom_ismacryp ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE ) ; if ( ( dump_ttxt || dump_srt ) && trackID ) { if ( trackID == ( u32 ) - 1 ) { for ( j = 0 ; j < gf_isom_get_track_count ( file ) ; j ++ ) { trackID = gf_isom_get_track_id ( file , j + 1 ) ; dump_isom_timed_text ( file , trackID , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , GF_FALSE , dump_srt ? GF_TEXTDUMPTYPE_SRT : GF_TEXTDUMPTYPE_TTXT ) ; } } else { dump_isom_timed_text ( file , trackID , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , GF_FALSE , dump_srt ? GF_TEXTDUMPTYPE_SRT : GF_TEXTDUMPTYPE_TTXT ) ; } } # ifndef GPAC_DISABLE_ISOM_HINTING if ( dump_rtp ) dump_isom_rtp ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE ) ; # endif # endif if ( dump_timestamps ) dump_isom_timestamps ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , dump_timestamps ) ; if ( dump_nal ) dump_isom_nal ( file , dump_nal , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , dump_nal_type ) ; if ( dump_saps ) dump_isom_saps ( file , dump_saps , dump_saps_mode , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE ) ; if ( do_hash ) { e = hash_file ( inName , dump_std ) ; if ( e ) goto err_exit ; } # ifndef GPAC_DISABLE_CORE_TOOLS if ( do_bin_xml ) { e = xml_bs_to_bin ( inName , outName , dump_std ) ; if ( e ) goto err_exit ; } # endif if ( dump_cart ) dump_isom_cover_art ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE ) ; if ( dump_chap ) dump_isom_chapters ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , dump_chap ) ; if ( dump_udta_type ) dump_isom_udta ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE , dump_udta_type , dump_udta_track ) ; if ( dump_iod ) { GF_InitialObjectDescriptor * iod = ( GF_InitialObjectDescriptor * ) gf_isom_get_root_od ( file ) ; if ( ! iod ) { <S2SV_StartBug> fprintf ( stderr , \"File<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>no<S2SV_blank>IOD\" , inName ) ; <S2SV_EndBug> } else { char szName [ GF_MAX_PATH + 10 ] ; FILE * iodf ; sprintf ( szName , \"%s.iod\" , outfile ) ; iodf = gf_fopen ( szName , \"wb\" ) ; if ( ! iodf ) { fprintf ( stderr , \"Cannot<S2SV_blank>open<S2SV_blank>destination<S2SV_blank>%s\\\\n\" , szName ) ; } else { u8 * desc ; u32 size ; GF_BitStream * bs = gf_bs_from_file ( iodf , GF_BITSTREAM_WRITE ) ; if ( gf_odf_desc_write ( ( GF_Descriptor * ) iod , & desc , & size ) == GF_OK ) { gf_fwrite ( desc , size , iodf ) ; gf_free ( desc ) ; } else { fprintf ( stderr , \"Error<S2SV_blank>writing<S2SV_blank>IOD<S2SV_blank>%s\\\\n\" , szName ) ; } gf_fclose ( iodf ) ; gf_bs_del ( bs ) ; } gf_odf_desc_del ( ( GF_Descriptor * ) iod ) ; } } # if ! defined ( GPAC_DISABLE_ISOM_WRITE ) && ! defined ( GPAC_DISABLE_MEDIA_IMPORT ) if ( split_duration || split_size || split_range_str ) { split_isomedia_file ( file , split_duration , split_size , inName , interleaving_time , split_start , adjust_split_end , outName , tmpdir , seg_at_rap , split_range_str ) ; open_edit = GF_FALSE ; needSave = GF_FALSE ; } # endif # ifndef GPAC_DISABLE_MEDIA_EXPORT if ( track_dump_type ) { char szFile [ GF_MAX_PATH + 24 ] ; GF_MediaExporter mdump ; for ( i = 0 ; i < nb_track_act ; i ++ ) { TrackAction * tka = & tracks [ i ] ; if ( tka -> act_type != TRAC_ACTION_RAW_EXTRACT ) continue ; memset ( & mdump , 0 , sizeof ( mdump ) ) ; mdump . file = file ; mdump . flags = tka -> dump_type ; mdump . trackID = tka -> trackID ; mdump . sample_num = tka -> sample_num ; if ( tka -> out_name ) { mdump . out_name = tka -> out_name ; } else if ( outName ) { mdump . out_name = outName ; mdump . flags |= GF_EXPORT_MERGE ; mdump . flags |= GF_EXPORT_NO_FILE_EXT ; } else if ( mdump . trackID ) { sprintf ( szFile , \"%s_track%d\" , outfile , mdump . trackID ) ; mdump . out_name = szFile ; } else { sprintf ( szFile , \"%s_export\" , outfile ) ; mdump . out_name = szFile ; } if ( tka -> trackID == ( u32 ) - 1 ) { for ( j = 0 ; j < gf_isom_get_track_count ( file ) ; j ++ ) { mdump . trackID = gf_isom_get_track_id ( file , j + 1 ) ; sprintf ( szFile , \"%s_track%d\" , outfile , mdump . trackID ) ; mdump . out_name = szFile ; mdump . print_stats_graph = fs_dump_flags ; e = gf_media_export ( & mdump ) ; if ( e ) goto err_exit ; } } else { mdump . print_stats_graph = fs_dump_flags ; e = gf_media_export ( & mdump ) ; if ( e ) goto err_exit ; } } } else if ( do_saf ) { GF_MediaExporter mdump ; memset ( & mdump , 0 , sizeof ( mdump ) ) ; mdump . file = file ; mdump . flags = GF_EXPORT_SAF ; mdump . out_name = outfile ; mdump . print_stats_graph = fs_dump_flags ; e = gf_media_export ( & mdump ) ; if ( e ) goto err_exit ; } # endif for ( i = 0 ; i < nb_meta_act ; i ++ ) { u32 tk = 0 ; # ifndef GPAC_DISABLE_ISOM_WRITE Bool self_ref ; # endif MetaAction * meta = & metas [ i ] ; if ( meta -> trackID ) tk = gf_isom_get_track_by_id ( file , meta -> trackID ) ; switch ( meta -> act_type ) { # ifndef GPAC_DISABLE_ISOM_WRITE case META_ACTION_SET_TYPE : e = gf_isom_set_meta_type ( file , meta -> root_meta , tk , meta -> meta_4cc ) ; gf_isom_modify_alternate_brand ( file , GF_ISOM_BRAND_ISO2 , GF_TRUE ) ; needSave = GF_TRUE ; break ; case META_ACTION_ADD_ITEM : self_ref = ! stricmp ( meta -> szPath , \"NULL\" ) || ! stricmp ( meta -> szPath , \"this\" ) || ! stricmp ( meta -> szPath , \"self\" ) ; e = gf_isom_add_meta_item ( file , meta -> root_meta , tk , self_ref , self_ref ? NULL : meta -> szPath , meta -> szName , meta -> item_id , meta -> item_type , meta -> mime_type , meta -> enc_type , meta -> use_dref ? meta -> szPath : NULL , NULL , meta -> image_props ) ; if ( meta -> ref_type ) { e = gf_isom_meta_add_item_ref ( file , meta -> root_meta , tk , meta -> item_id , meta -> ref_item_id , meta -> ref_type , NULL ) ; } needSave = GF_TRUE ; break ; case META_ACTION_ADD_IMAGE_ITEM : { u32 old_tk_count = gf_isom_get_track_count ( file ) ; GF_Fraction _frac = { 0 , 0 } ; e = import_file ( file , meta -> szPath , 0 , _frac , 0 , NULL , NULL , 0 ) ; if ( e == GF_OK ) { u32 meta_type = gf_isom_get_meta_type ( file , meta -> root_meta , tk ) ; if ( ! meta_type ) { e = gf_isom_set_meta_type ( file , meta -> root_meta , tk , GF_META_ITEM_TYPE_PICT ) ; } else { if ( meta_type != GF_META_ITEM_TYPE_PICT ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"Warning:<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>a<S2SV_blank>root<S2SV_blank>\\'meta\\'<S2SV_blank>box<S2SV_blank>of<S2SV_blank>type<S2SV_blank>%s\\\\n\" , gf_4cc_to_str ( meta_type ) ) ) ; e = GF_BAD_PARAM ; } } if ( e == GF_OK ) { if ( ! meta -> item_id ) { e = gf_isom_meta_get_next_item_id ( file , meta -> root_meta , tk , & meta -> item_id ) ; } if ( e == GF_OK ) { e = gf_isom_iff_create_image_item_from_track ( file , meta -> root_meta , tk , 1 , meta -> szName , meta -> item_id , meta -> image_props , NULL ) ; if ( e == GF_OK && meta -> primary ) { e = gf_isom_set_meta_primary_item ( file , meta -> root_meta , tk , meta -> item_id ) ; } if ( e == GF_OK && meta -> ref_type ) { e = gf_isom_meta_add_item_ref ( file , meta -> root_meta , tk , meta -> item_id , meta -> ref_item_id , meta -> ref_type , NULL ) ; } } } } gf_isom_remove_track ( file , old_tk_count + 1 ) ; needSave = GF_TRUE ; } break ; case META_ACTION_REM_ITEM : e = gf_isom_remove_meta_item ( file , meta -> root_meta , tk , meta -> item_id ) ; needSave = GF_TRUE ; break ; case META_ACTION_SET_PRIMARY_ITEM : e = gf_isom_set_meta_primary_item ( file , meta -> root_meta , tk , meta -> item_id ) ; needSave = GF_TRUE ; break ; case META_ACTION_SET_XML : case META_ACTION_SET_BINARY_XML : e = gf_isom_set_meta_xml ( file , meta -> root_meta , tk , meta -> szPath , NULL , 0 , ( meta -> act_type == META_ACTION_SET_BINARY_XML ) ? 1 : 0 ) ; needSave = GF_TRUE ; break ; case META_ACTION_REM_XML : if ( gf_isom_get_meta_item_count ( file , meta -> root_meta , tk ) ) { e = gf_isom_remove_meta_xml ( file , meta -> root_meta , tk ) ; needSave = GF_TRUE ; } else { fprintf ( stderr , \"No<S2SV_blank>meta<S2SV_blank>box<S2SV_blank>in<S2SV_blank>input<S2SV_blank>file\\\\n\" ) ; } break ; case META_ACTION_DUMP_ITEM : if ( gf_isom_get_meta_item_count ( file , meta -> root_meta , tk ) ) { e = gf_isom_extract_meta_item ( file , meta -> root_meta , tk , meta -> item_id , strlen ( meta -> szPath ) ? meta -> szPath : NULL ) ; } else { fprintf ( stderr , \"No<S2SV_blank>meta<S2SV_blank>box<S2SV_blank>in<S2SV_blank>input<S2SV_blank>file\\\\n\" ) ; } break ; # endif case META_ACTION_DUMP_XML : if ( gf_isom_has_meta_xml ( file , meta -> root_meta , tk ) ) { e = gf_isom_extract_meta_xml ( file , meta -> root_meta , tk , meta -> szPath , NULL ) ; } else { fprintf ( stderr , \"No<S2SV_blank>meta<S2SV_blank>box<S2SV_blank>in<S2SV_blank>input<S2SV_blank>file\\\\n\" ) ; } break ; default : break ; } if ( meta -> image_props ) { gf_free ( meta -> image_props ) ; meta -> image_props = NULL ; } if ( e ) goto err_exit ; } if ( ! open_edit && ! needSave ) { if ( file ) gf_isom_delete ( file ) ; goto exit ; } # ifndef GPAC_DISABLE_ISOM_WRITE if ( clean_groups ) { e = gf_isom_reset_switch_parameters ( file ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; } for ( i = 0 ; i < nb_tsel_acts ; i ++ ) { switch ( tsel_acts [ i ] . act_type ) { case TSEL_ACTION_SET_PARAM : e = gf_isom_set_track_switch_parameter ( file , gf_isom_get_track_by_id ( file , tsel_acts [ i ] . trackID ) , tsel_acts [ i ] . refTrackID ? gf_isom_get_track_by_id ( file , tsel_acts [ i ] . refTrackID ) : 0 , tsel_acts [ i ] . is_switchGroup ? 1 : 0 , & tsel_acts [ i ] . switchGroupID , tsel_acts [ i ] . criteria , tsel_acts [ i ] . nb_criteria ) ; if ( e == GF_BAD_PARAM ) { u32 alternateGroupID , nb_groups ; gf_isom_get_track_switch_group_count ( file , gf_isom_get_track_by_id ( file , tsel_acts [ i ] . trackID ) , & alternateGroupID , & nb_groups ) ; if ( alternateGroupID ) fprintf ( stderr , \"Hint:<S2SV_blank>for<S2SV_blank>adding<S2SV_blank>more<S2SV_blank>tracks<S2SV_blank>to<S2SV_blank>group,<S2SV_blank>using:<S2SV_blank>-group-add<S2SV_blank>-refTrack=ID1:[criteria:]trackID=ID2\\\\n\" ) ; else fprintf ( stderr , \"Hint:<S2SV_blank>for<S2SV_blank>creates<S2SV_blank>a<S2SV_blank>new<S2SV_blank>grouping<S2SV_blank>information,<S2SV_blank>using<S2SV_blank>-group-add<S2SV_blank>-trackID=ID1:[criteria:]trackID=ID2\\\\n\" ) ; } if ( e ) goto err_exit ; needSave = GF_TRUE ; break ; case TSEL_ACTION_REMOVE_TSEL : e = gf_isom_reset_track_switch_parameter ( file , gf_isom_get_track_by_id ( file , tsel_acts [ i ] . trackID ) , 0 ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; break ; case TSEL_ACTION_REMOVE_ALL_TSEL_IN_GROUP : e = gf_isom_reset_track_switch_parameter ( file , gf_isom_get_track_by_id ( file , tsel_acts [ i ] . trackID ) , 1 ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; break ; default : break ; } } if ( remove_sys_tracks ) { # ifndef GPAC_DISABLE_AV_PARSERS remove_systems_tracks ( file ) ; # endif needSave = GF_TRUE ; if ( conv_type < GF_ISOM_CONV_TYPE_ISMA_EX ) conv_type = 0 ; } if ( remove_root_od ) { gf_isom_remove_root_od ( file ) ; needSave = GF_TRUE ; } # ifndef GPAC_DISABLE_ISOM_HINTING if ( remove_hint ) { for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { if ( gf_isom_get_media_type ( file , i + 1 ) == GF_ISOM_MEDIA_HINT ) { fprintf ( stderr , \"Removing<S2SV_blank>hint<S2SV_blank>track<S2SV_blank>ID<S2SV_blank>%d\\\\n\" , gf_isom_get_track_id ( file , i + 1 ) ) ; gf_isom_remove_track ( file , i + 1 ) ; i -- ; } } gf_isom_sdp_clean ( file ) ; needSave = GF_TRUE ; } # endif if ( timescale && ( timescale != gf_isom_get_timescale ( file ) ) ) { gf_isom_set_timescale ( file , timescale ) ; needSave = GF_TRUE ; } if ( ! encode ) { if ( ! file ) { fprintf ( stderr , \"Nothing<S2SV_blank>to<S2SV_blank>do<S2SV_blank>-<S2SV_blank>exiting\\\\n\" ) ; goto exit ; } if ( outName ) { strcpy ( outfile , outName ) ; } else { char * rel_name = strrchr ( inName , GF_PATH_SEPARATOR ) ; if ( ! rel_name ) rel_name = strrchr ( inName , '/' ) ; strcpy ( outfile , \"\" ) ; if ( tmpdir ) { strcpy ( outfile , tmpdir ) ; if ( ! strchr ( \"\\\\\\\\/\" , tmpdir [ strlen ( tmpdir ) - 1 ] ) ) strcat ( outfile , \"/\" ) ; } if ( ! pack_file ) strcat ( outfile , \"out_\" ) ; strcat ( outfile , rel_name ? rel_name + 1 : inName ) ; if ( pack_file ) { strcpy ( outfile , rel_name ? rel_name + 1 : inName ) ; rel_name = strrchr ( outfile , '.' ) ; if ( rel_name ) rel_name [ 0 ] = 0 ; strcat ( outfile , \".m21\" ) ; } } # ifndef GPAC_DISABLE_MEDIA_IMPORT if ( ( conv_type == GF_ISOM_CONV_TYPE_ISMA ) || ( conv_type == GF_ISOM_CONV_TYPE_ISMA_EX ) ) { fprintf ( stderr , \"Converting<S2SV_blank>to<S2SV_blank>ISMA<S2SV_blank>Audio-Video<S2SV_blank>MP4<S2SV_blank>file...\\\\n\" ) ; e = gf_media_make_isma ( file , crypt ? 1 : 0 , GF_FALSE , ( conv_type == GF_ISOM_CONV_TYPE_ISMA_EX ) ? 1 : 0 ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; } if ( conv_type == GF_ISOM_CONV_TYPE_3GPP ) { fprintf ( stderr , \"Converting<S2SV_blank>to<S2SV_blank>3GP<S2SV_blank>file...\\\\n\" ) ; e = gf_media_make_3gpp ( file ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; } if ( conv_type == GF_ISOM_CONV_TYPE_PSP ) { fprintf ( stderr , \"Converting<S2SV_blank>to<S2SV_blank>PSP<S2SV_blank>file...\\\\n\" ) ; e = gf_media_make_psp ( file ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; } if ( conv_type == GF_ISOM_CONV_TYPE_MOV ) { e = gf_media_check_qt_prores ( file ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; if ( interleaving_time ) interleaving_time = 0.5 ; } # endif if ( conv_type == GF_ISOM_CONV_TYPE_IPOD ) { u32 ipod_major_brand = 0 ; fprintf ( stderr , \"Setting<S2SV_blank>up<S2SV_blank>iTunes/iPod<S2SV_blank>file...\\\\n\" ) ; for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { u32 mType = gf_isom_get_media_type ( file , i + 1 ) ; switch ( mType ) { case GF_ISOM_MEDIA_VISUAL : case GF_ISOM_MEDIA_AUXV : case GF_ISOM_MEDIA_PICT : ipod_major_brand = GF_ISOM_BRAND_M4V ; gf_isom_set_ipod_compatible ( file , i + 1 ) ; break ; case GF_ISOM_MEDIA_AUDIO : if ( ! ipod_major_brand ) ipod_major_brand = GF_ISOM_BRAND_M4A ; else gf_isom_modify_alternate_brand ( file , GF_ISOM_BRAND_M4A , GF_TRUE ) ; break ; case GF_ISOM_MEDIA_TEXT : if ( gf_isom_get_media_subtype ( file , i + 1 , 1 ) == GF_ISOM_SUBTYPE_TX3G ) { Bool is_chap = 0 ; for ( j = 0 ; j < gf_isom_get_track_count ( file ) ; j ++ ) { s32 count = gf_isom_get_reference_count ( file , j + 1 , GF_ISOM_REF_CHAP ) ; if ( count > 0 ) { u32 tk , k ; for ( k = 0 ; k < ( u32 ) count ; k ++ ) { gf_isom_get_reference ( file , j + 1 , GF_ISOM_REF_CHAP , k + 1 , & tk ) ; if ( tk == i + 1 ) { is_chap = 1 ; break ; } } if ( is_chap ) break ; } if ( is_chap ) break ; } if ( ! is_chap ) gf_isom_set_media_type ( file , i + 1 , GF_ISOM_MEDIA_SUBT ) ; } break ; } } gf_isom_set_brand_info ( file , ipod_major_brand , 1 ) ; gf_isom_modify_alternate_brand ( file , GF_ISOM_BRAND_MP42 , GF_TRUE ) ; needSave = GF_TRUE ; } } else if ( outName ) { strcpy ( outfile , outName ) ; } for ( j = 0 ; j < nb_track_act ; j ++ ) { TrackAction * tka = & tracks [ j ] ; u32 track = tka -> trackID ? gf_isom_get_track_by_id ( file , tka -> trackID ) : 0 ; timescale = gf_isom_get_timescale ( file ) ; switch ( tka -> act_type ) { case TRAC_ACTION_REM_TRACK : e = gf_isom_remove_track ( file , track ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>Removing<S2SV_blank>track<S2SV_blank>ID<S2SV_blank>%d:<S2SV_blank>%s\\\\n\" , tka -> trackID , gf_error_to_string ( e ) ) ; } else { fprintf ( stderr , \"Removing<S2SV_blank>track<S2SV_blank>ID<S2SV_blank>%d\\\\n\" , tka -> trackID ) ; } needSave = GF_TRUE ; break ; case TRAC_ACTION_SET_LANGUAGE : for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { if ( track && ( track != i + 1 ) ) continue ; e = gf_isom_set_media_language ( file , i + 1 , tka -> lang ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; } needSave = GF_TRUE ; break ; case TRAC_ACTION_SET_KIND : for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { if ( track && ( track != i + 1 ) ) continue ; e = gf_isom_add_track_kind ( file , i + 1 , tka -> kind_scheme , tka -> kind_value ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; } needSave = GF_TRUE ; break ; case TRAC_ACTION_REM_KIND : for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { if ( track && ( track != i + 1 ) ) continue ; e = gf_isom_remove_track_kind ( file , i + 1 , tka -> kind_scheme , tka -> kind_value ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; } needSave = GF_TRUE ; break ; case TRAC_ACTION_SET_DELAY : if ( tka -> delay_ms ) { u64 tk_dur ; gf_isom_remove_edits ( file , track ) ; tk_dur = gf_isom_get_track_duration ( file , track ) ; if ( gf_isom_get_edits_count ( file , track ) ) needSave = GF_TRUE ; if ( tka -> delay_ms > 0 ) { gf_isom_append_edit ( file , track , ( timescale * tka -> delay_ms ) / 1000 , 0 , GF_ISOM_EDIT_EMPTY ) ; gf_isom_append_edit ( file , track , tk_dur , 0 , GF_ISOM_EDIT_NORMAL ) ; needSave = GF_TRUE ; } else { u64 to_skip = ( timescale * ( - tka -> delay_ms ) ) / 1000 ; if ( to_skip < tk_dur ) { u64 media_time = ( - tka -> delay_ms ) * gf_isom_get_media_timescale ( file , track ) / 1000 ; gf_isom_append_edit ( file , track , tk_dur - to_skip , media_time , GF_ISOM_EDIT_NORMAL ) ; needSave = GF_TRUE ; } else { fprintf ( stderr , \"Warning:<S2SV_blank>request<S2SV_blank>negative<S2SV_blank>delay<S2SV_blank>longer<S2SV_blank>than<S2SV_blank>track<S2SV_blank>duration<S2SV_blank>-<S2SV_blank>ignoring\\\\n\" ) ; } } } else if ( gf_isom_get_edits_count ( file , track ) ) { gf_isom_remove_edits ( file , track ) ; needSave = GF_TRUE ; } break ; case TRAC_ACTION_SET_KMS_URI : for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { if ( track && ( track != i + 1 ) ) continue ; if ( ! gf_isom_is_media_encrypted ( file , i + 1 , 1 ) ) continue ; if ( ! gf_isom_is_ismacryp_media ( file , i + 1 , 1 ) ) continue ; e = gf_isom_change_ismacryp_protection ( file , i + 1 , 1 , NULL , ( char * ) tka -> kms ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; } break ; case TRAC_ACTION_SET_ID : if ( ! tka -> trackID && ( gf_isom_get_track_count ( file ) == 1 ) ) { fprintf ( stderr , \"Warning:<S2SV_blank>track<S2SV_blank>id<S2SV_blank>is<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>but<S2SV_blank>file<S2SV_blank>has<S2SV_blank>only<S2SV_blank>one<S2SV_blank>track<S2SV_blank>-<S2SV_blank>assume<S2SV_blank>that<S2SV_blank>you<S2SV_blank>want<S2SV_blank>to<S2SV_blank>change<S2SV_blank>id<S2SV_blank>for<S2SV_blank>this<S2SV_blank>track\\\\n\" ) ; track = 1 ; } if ( track ) { u32 newTrack ; newTrack = gf_isom_get_track_by_id ( file , tka -> newTrackID ) ; if ( newTrack != 0 ) { fprintf ( stderr , \"Error:<S2SV_blank>Cannot<S2SV_blank>set<S2SV_blank>track<S2SV_blank>id<S2SV_blank>with<S2SV_blank>value<S2SV_blank>%d<S2SV_blank>because<S2SV_blank>a<S2SV_blank>track<S2SV_blank>already<S2SV_blank>exists<S2SV_blank>-<S2SV_blank>ignoring\" , tka -> newTrackID ) ; } else { e = gf_isom_set_track_id ( file , track , tka -> newTrackID ) ; needSave = GF_TRUE ; } } else { fprintf ( stderr , \"Error:<S2SV_blank>Cannot<S2SV_blank>change<S2SV_blank>id<S2SV_blank>for<S2SV_blank>track<S2SV_blank>%d<S2SV_blank>because<S2SV_blank>it<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist<S2SV_blank>-<S2SV_blank>ignoring\" , tka -> trackID ) ; } break ; case TRAC_ACTION_SWAP_ID : if ( track ) { u32 tk1 , tk2 ; tk1 = gf_isom_get_track_by_id ( file , tka -> trackID ) ; tk2 = gf_isom_get_track_by_id ( file , tka -> newTrackID ) ; if ( ! tk1 || ! tk2 ) { fprintf ( stderr , \"Error:<S2SV_blank>Cannot<S2SV_blank>swap<S2SV_blank>track<S2SV_blank>IDs<S2SV_blank>because<S2SV_blank>not<S2SV_blank>existing<S2SV_blank>-<S2SV_blank>ignoring\" ) ; } else { e = gf_isom_set_track_id ( file , tk2 , 0 ) ; if ( ! e ) e = gf_isom_set_track_id ( file , tk1 , tka -> newTrackID ) ; if ( ! e ) e = gf_isom_set_track_id ( file , tk2 , tka -> trackID ) ; needSave = GF_TRUE ; } } else { fprintf ( stderr , \"Error:<S2SV_blank>Cannot<S2SV_blank>change<S2SV_blank>id<S2SV_blank>for<S2SV_blank>track<S2SV_blank>%d<S2SV_blank>because<S2SV_blank>it<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist<S2SV_blank>-<S2SV_blank>ignoring\" , tka -> trackID ) ; } break ; case TRAC_ACTION_SET_PAR : e = gf_media_change_par ( file , track , tka -> par_num , tka -> par_den , tka -> force_par , tka -> rewrite_bs ) ; needSave = GF_TRUE ; break ; case TRAC_ACTION_SET_CLAP : e = gf_isom_set_clean_aperture ( file , track , 1 , tka -> clap_wnum , tka -> clap_wden , tka -> clap_hnum , tka -> clap_hden , tka -> clap_honum , tka -> clap_hoden , tka -> clap_vonum , tka -> clap_voden ) ; needSave = GF_TRUE ; break ; case TRAC_ACTION_SET_MX : e = gf_isom_set_track_matrix ( file , track , tka -> mx ) ; needSave = GF_TRUE ; break ; case TRAC_ACTION_SET_HANDLER_NAME : e = gf_isom_set_handler_name ( file , track , tka -> hdl_name ) ; needSave = GF_TRUE ; break ; case TRAC_ACTION_ENABLE : if ( ! gf_isom_is_track_enabled ( file , track ) ) { e = gf_isom_set_track_enabled ( file , track , GF_TRUE ) ; needSave = GF_TRUE ; } break ; case TRAC_ACTION_DISABLE : if ( gf_isom_is_track_enabled ( file , track ) ) { e = gf_isom_set_track_enabled ( file , track , GF_FALSE ) ; needSave = GF_TRUE ; } break ; case TRAC_ACTION_REFERENCE : e = gf_isom_set_track_reference ( file , track , GF_4CC ( tka -> lang [ 0 ] , tka -> lang [ 1 ] , tka -> lang [ 2 ] , tka -> lang [ 3 ] ) , ( u32 ) tka -> delay_ms ) ; needSave = GF_TRUE ; break ; case TRAC_ACTION_REM_NON_RAP : fprintf ( stderr , \"Removing<S2SV_blank>non-rap<S2SV_blank>samples<S2SV_blank>from<S2SV_blank>track<S2SV_blank>%d\\\\n\" , tka -> trackID ) ; e = gf_media_remove_non_rap ( file , track , GF_FALSE ) ; needSave = GF_TRUE ; break ; case TRAC_ACTION_REM_NON_REFS : fprintf ( stderr , \"Removing<S2SV_blank>non-reference<S2SV_blank>samples<S2SV_blank>from<S2SV_blank>track<S2SV_blank>%d\\\\n\" , tka -> trackID ) ; e = gf_media_remove_non_rap ( file , track , GF_TRUE ) ; needSave = GF_TRUE ; break ; case TRAC_ACTION_SET_UDTA : fprintf ( stderr , \"Assigning<S2SV_blank>udta<S2SV_blank>box\\\\n\" ) ; e = set_file_udta ( file , track , tka -> udta_type , tka -> src_name , tka -> sample_num ? GF_TRUE : GF_FALSE ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; break ; default : break ; } if ( e ) goto err_exit ; } if ( itunes_tags ) { char * tags = itunes_tags ; while ( tags ) { char * val ; char * sep = gf_url_colon_suffix ( tags ) ; u32 tlen , itag = 0 ; if ( sep ) { while ( sep ) { for ( itag = 0 ; itag < nb_itunes_tags ; itag ++ ) { if ( ! strnicmp ( sep + 1 , itags [ itag ] . name , strlen ( itags [ itag ] . name ) ) ) break ; } if ( itag < nb_itunes_tags ) { break ; } sep = gf_url_colon_suffix ( sep + 1 ) ; } if ( sep ) sep [ 0 ] = 0 ; } for ( itag = 0 ; itag < nb_itunes_tags ; itag ++ ) { if ( ! strnicmp ( tags , itags [ itag ] . name , strlen ( itags [ itag ] . name ) ) ) { break ; } } if ( itag == nb_itunes_tags ) { fprintf ( stderr , \"Invalid<S2SV_blank>iTune<S2SV_blank>tag<S2SV_blank>format<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>-<S2SV_blank>ignoring\\\\n\" , tags ) ; tags = NULL ; continue ; } itag = itags [ itag ] . code ; val = strchr ( tags , '=' ) ; if ( ! val ) { fprintf ( stderr , \"Invalid<S2SV_blank>iTune<S2SV_blank>tag<S2SV_blank>format<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>(expecting<S2SV_blank>\\'=\\')<S2SV_blank>-<S2SV_blank>ignoring\\\\n\" , tags ) ; tags = NULL ; continue ; } val ++ ; if ( ( val [ 0 ] == ':' ) || ! val [ 0 ] || ! stricmp ( val , \"NULL\" ) ) val = NULL ; tlen = val ? ( u32 ) strlen ( val ) : 0 ; switch ( itag ) { case GF_ISOM_ITUNE_COVER_ART : { u8 * d = NULL ; e = GF_OK ; if ( val ) { char * ext ; e = gf_file_load_data ( val , ( u8 * * ) & d , & tlen ) ; ext = strrchr ( val , '.' ) ; if ( ! stricmp ( ext , \".png\" ) ) tlen |= 0x80000000 ; } if ( ! e ) e = gf_isom_apple_set_tag ( file , GF_ISOM_ITUNE_COVER_ART , d , tlen ) ; if ( d ) gf_free ( d ) ; } break ; case GF_ISOM_ITUNE_TEMPO : gf_isom_apple_set_tag ( file , itag , NULL , val ? atoi ( val ) : 0 ) ; break ; case GF_ISOM_ITUNE_GENRE : { u8 _v = gf_id3_get_genre_tag ( val ) ; if ( _v ) { gf_isom_apple_set_tag ( file , itag , NULL , _v ) ; } else { if ( ! val ) val = \"\" ; gf_isom_apple_set_tag ( file , itag , ( u8 * ) val , ( u32 ) strlen ( val ) ) ; } } break ; case GF_ISOM_ITUNE_DISK : case GF_ISOM_ITUNE_TRACKNUMBER : { u32 n , t ; char _t [ 8 ] ; n = t = 0 ; if ( val ) { memset ( _t , 0 , sizeof ( char ) * 8 ) ; tlen = ( itag == GF_ISOM_ITUNE_DISK ) ? 6 : 8 ; if ( sscanf ( val , \"%u/%u\" , & n , & t ) == 2 ) { _t [ 3 ] = n ; _t [ 2 ] = n >> 8 ; _t [ 5 ] = t ; _t [ 4 ] = t >> 8 ; } else if ( sscanf ( val , \"%u\" , & n ) == 1 ) { _t [ 3 ] = n ; _t [ 2 ] = n >> 8 ; } else tlen = 0 ; } if ( ! val || tlen ) gf_isom_apple_set_tag ( file , itag , val ? ( u8 * ) _t : NULL , tlen ) ; } break ; case GF_ISOM_ITUNE_GAPLESS : case GF_ISOM_ITUNE_COMPILATION : { u8 _t [ 1 ] ; if ( val && ! stricmp ( val , \"yes\" ) ) _t [ 0 ] = 1 ; else _t [ 0 ] = 0 ; gf_isom_apple_set_tag ( file , itag , _t , 1 ) ; } break ; default : gf_isom_apple_set_tag ( file , itag , ( u8 * ) val , tlen ) ; break ; } needSave = GF_TRUE ; if ( sep ) { sep [ 0 ] = ':' ; tags = sep + 1 ; } else { tags = NULL ; } } } if ( movie_time ) { gf_isom_set_creation_time ( file , movie_time ) ; for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { gf_isom_set_track_creation_time ( file , i + 1 , movie_time ) ; } needSave = GF_TRUE ; } if ( cprt ) { e = gf_isom_set_copyright ( file , \"und\" , cprt ) ; needSave = GF_TRUE ; if ( e ) goto err_exit ; } if ( chap_file ) { # ifndef GPAC_DISABLE_MEDIA_IMPORT e = gf_media_import_chapters ( file , chap_file , import_fps , chap_qt ) ; needSave = GF_TRUE ; # else fprintf ( stderr , \"Warning:<S2SV_blank>GPAC<S2SV_blank>compiled<S2SV_blank>without<S2SV_blank>Media<S2SV_blank>Import,<S2SV_blank>chapters<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>imported\\\\n\" ) ; e = GF_NOT_SUPPORTED ; # endif if ( e ) goto err_exit ; } if ( major_brand ) { gf_isom_set_brand_info ( file , major_brand , minor_version ) ; needSave = GF_TRUE ; } for ( i = 0 ; i < nb_alt_brand_add ; i ++ ) { gf_isom_modify_alternate_brand ( file , brand_add [ i ] , GF_TRUE ) ; needSave = GF_TRUE ; } for ( i = 0 ; i < nb_alt_brand_rem ; i ++ ) { gf_isom_modify_alternate_brand ( file , brand_rem [ i ] , GF_FALSE ) ; needSave = GF_TRUE ; } if ( box_patch_filename ) { e = gf_isom_apply_box_patch ( file , box_patch_trackID , box_patch_filename , GF_FALSE ) ; if ( e ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>box<S2SV_blank>patch<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , box_patch_filename , gf_error_to_string ( e ) ) ; goto err_exit ; } needSave = GF_TRUE ; } # ifndef GPAC_DISABLE_CRYPTO if ( crypt ) { if ( ! drm_file ) { fprintf ( stderr , \"Missing<S2SV_blank>DRM<S2SV_blank>file<S2SV_blank>location<S2SV_blank>-<S2SV_blank>usage<S2SV_blank>\\'-%s<S2SV_blank>drm_file<S2SV_blank>input_file\\\\n\" , ( crypt == 1 ) ? \"crypt\" : \"decrypt\" ) ; e = GF_BAD_PARAM ; goto err_exit ; } if ( get_file_type_by_ext ( inName ) != GF_FILE_TYPE_ISO_MEDIA ) { fprintf ( stderr , \"MP4Box<S2SV_blank>can<S2SV_blank>crypt<S2SV_blank>only<S2SV_blank>ISOMedia<S2SV_blank>File\\\\n\" ) ; e = GF_BAD_PARAM ; goto err_exit ; } if ( crypt == 1 ) { if ( use_init_seg ) { e = gf_crypt_fragment ( file , drm_file , outfile , inName , fs_dump_flags ) ; } else { e = gf_crypt_file ( file , drm_file , outfile , interleaving_time , fs_dump_flags ) ; } } else if ( crypt == 2 ) { if ( use_init_seg ) { e = gf_decrypt_fragment ( file , drm_file , outfile , inName , fs_dump_flags ) ; } else { e = gf_decrypt_file ( file , drm_file , outfile , interleaving_time , fs_dump_flags ) ; } } if ( e ) goto err_exit ; needSave = outName ? GF_FALSE : GF_TRUE ; if ( ! Frag && ! HintIt && ! FullInter && ! force_co64 ) { char szName [ GF_MAX_PATH ] ; strcpy ( szName , gf_isom_get_filename ( file ) ) ; gf_isom_delete ( file ) ; file = NULL ; if ( ! outName ) { e = gf_file_move ( outfile , szName ) ; if ( e ) goto err_exit ; } goto exit ; } } # endif # ifndef GPAC_DISABLE_ISOM_FRAGMENTS if ( Frag ) { if ( ! interleaving_time ) interleaving_time = DEFAULT_INTERLEAVING_IN_SEC ; if ( HintIt ) fprintf ( stderr , \"Warning:<S2SV_blank>cannot<S2SV_blank>hint<S2SV_blank>and<S2SV_blank>fragment<S2SV_blank>-<S2SV_blank>ignoring<S2SV_blank>hint\\\\n\" ) ; fprintf ( stderr , \"Fragmenting<S2SV_blank>file<S2SV_blank>(%.3f<S2SV_blank>seconds<S2SV_blank>fragments)\\\\n\" , interleaving_time ) ; e = gf_media_fragment_file ( file , outfile , interleaving_time , use_mfra ) ; if ( e ) fprintf ( stderr , \"Error<S2SV_blank>while<S2SV_blank>fragmenting<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; if ( ! e && ! outName ) { if ( gf_file_exists ( inName ) && gf_file_delete ( inName ) ) fprintf ( stderr , \"Error<S2SV_blank>removing<S2SV_blank>file<S2SV_blank>%s\\\\n\" , inName ) ; else if ( gf_file_move ( outfile , inName ) ) fprintf ( stderr , \"Error<S2SV_blank>renaming<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s\\\\n\" , outfile , inName ) ; } if ( e ) goto err_exit ; gf_isom_delete ( file ) ; goto exit ; } # endif # ifndef GPAC_DISABLE_ISOM_HINTING if ( HintIt ) { if ( force_ocr ) SetupClockReferences ( file ) ; fprintf ( stderr , \"Hinting<S2SV_blank>file<S2SV_blank>with<S2SV_blank>Path-MTU<S2SV_blank>%d<S2SV_blank>Bytes\\\\n\" , MTUSize ) ; MTUSize -= 12 ; e = HintFile ( file , MTUSize , max_ptime , rtp_rate , hint_flags , HintCopy , HintInter , regular_iod , single_group , hint_no_offset ) ; if ( e ) goto err_exit ; needSave = GF_TRUE ; if ( print_sdp ) dump_isom_sdp ( file , dump_std ? NULL : ( outName ? outName : outfile ) , outName ? GF_TRUE : GF_FALSE ) ; } # endif # if ! defined ( GPAC_DISABLE_ISOM_HINTING ) && ! defined ( GPAC_DISABLE_SENG ) for ( i = 0 ; i < nb_sdp_ex ; i ++ ) { if ( sdp_lines [ i ] . trackID ) { u32 track = gf_isom_get_track_by_id ( file , sdp_lines [ i ] . trackID ) ; if ( gf_isom_get_media_type ( file , track ) != GF_ISOM_MEDIA_HINT ) { s32 ref_count ; u32 k , count = gf_isom_get_track_count ( file ) ; for ( j = 0 ; j < count ; j ++ ) { if ( gf_isom_get_media_type ( file , j + 1 ) != GF_ISOM_MEDIA_HINT ) continue ; ref_count = gf_isom_get_reference_count ( file , j + 1 , GF_ISOM_REF_HINT ) ; if ( ref_count < 0 ) continue ; for ( k = 0 ; k < ( u32 ) ref_count ; k ++ ) { u32 refTk ; if ( gf_isom_get_reference ( file , j + 1 , GF_ISOM_REF_HINT , k + 1 , & refTk ) ) continue ; if ( refTk == track ) { track = j + 1 ; j = count ; break ; } } } } gf_isom_sdp_add_track_line ( file , track , sdp_lines [ i ] . line ) ; needSave = GF_TRUE ; } else { gf_isom_sdp_add_line ( file , sdp_lines [ i ] . line ) ; needSave = GF_TRUE ; } } # endif if ( FullInter ) { e = gf_isom_set_storage_mode ( file , GF_ISOM_STORE_TIGHT ) ; } else if ( do_flat ) { e = gf_isom_set_storage_mode ( file , ( do_flat == 1 ) ? GF_ISOM_STORE_FLAT : GF_ISOM_STORE_STREAMABLE ) ; needSave = GF_TRUE ; } else { e = gf_isom_make_interleave ( file , interleaving_time ) ; if ( ! e && old_interleave ) e = gf_isom_set_storage_mode ( file , GF_ISOM_STORE_INTERLEAVED ) ; } if ( force_co64 ) gf_isom_force_64bit_chunk_offset ( file , GF_TRUE ) ; if ( compress_moov ) gf_isom_enable_compression ( file , GF_ISO_COMP_MOOV , GF_FALSE ) ; if ( e ) goto err_exit ; if ( ! encode && ! force_new ) gf_isom_set_final_name ( file , outfile ) ; if ( needSave ) { if ( ! gf_sys_is_quiet ( ) ) { if ( outName ) { gf_isom_set_final_name ( file , outfile ) ; } else if ( encode || pack_file ) { fprintf ( stderr , \"Saving<S2SV_blank>to<S2SV_blank>%s:<S2SV_blank>\" , gf_isom_get_filename ( file ) ) ; } else { fprintf ( stderr , \"Saving<S2SV_blank>%s:<S2SV_blank>\" , inName ) ; } if ( HintIt && FullInter ) fprintf ( stderr , \"Hinted<S2SV_blank>file<S2SV_blank>-<S2SV_blank>Full<S2SV_blank>Interleaving\\\\n\" ) ; else if ( FullInter ) fprintf ( stderr , \"Full<S2SV_blank>Interleaving\\\\n\" ) ; else if ( ( force_new == 2 ) && interleaving_time ) fprintf ( stderr , \"Fast-start<S2SV_blank>interleaved<S2SV_blank>storage\\\\n\" ) ; else if ( do_flat || ! interleaving_time ) fprintf ( stderr , \"Flat<S2SV_blank>storage\\\\n\" ) ; else fprintf ( stderr , \"%.3f<S2SV_blank>secs<S2SV_blank>Interleaving%s\\\\n\" , interleaving_time , old_interleave ? \"<S2SV_blank>-<S2SV_blank>no<S2SV_blank>drift<S2SV_blank>control\" : \"\" ) ; } else { if ( outName ) gf_isom_set_final_name ( file , outfile ) ; } e = gf_isom_close ( file ) ; file = NULL ; if ( ! e && ! outName && ! encode && ! force_new && ! pack_file ) { if ( gf_file_exists ( inName ) ) { e = gf_file_delete ( inName ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>removing<S2SV_blank>file<S2SV_blank>%s\\\\n\" , inName ) ; } } e = gf_file_move ( outfile , inName ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>renaming<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s\\\\n\" , outfile , inName ) ; } } } else { gf_isom_delete ( file ) ; } if ( e ) { fprintf ( stderr , \"Error:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; goto err_exit ; } goto exit ; # else gf_isom_delete ( file ) ; fprintf ( stderr , \"Error:<S2SV_blank>Read-only<S2SV_blank>version<S2SV_blank>of<S2SV_blank>MP4Box.\\\\n\" ) ; return mp4box_cleanup ( 1 ) ; # endif err_exit : if ( file ) gf_isom_delete ( file ) ; fprintf ( stderr , \"\\\\n\\\\tError:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; return mp4box_cleanup ( 1 ) ; exit : mp4box_cleanup ( 0 ) ; # ifdef GPAC_MEMORY_TRACKING if ( mem_track && ( gf_memory_size ( ) || gf_file_handles_count ( ) ) ) { gf_log_set_tool_level ( GF_LOG_MEMORY , GF_LOG_INFO ) ; gf_memory_print ( ) ; return 2 ; } # endif return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( stderr , \"File<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>no<S2SV_blank>IOD\\\\n\" <S2SV_ModEnd> , inName )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int16_t vp9_dc_quant ( int qindex , int delta ) { <S2SV_EndBug> return dc_qlookup [ clamp ( qindex + delta , 0 , MAXQ ) ] ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int delta , vpx_bit_depth_t bit_depth ) { # if CONFIG_VP9_HIGHBITDEPTH switch ( bit_depth ) { case VPX_BITS_8 : <S2SV_ModEnd> return dc_qlookup [ <S2SV_ModStart> ) ] ; case VPX_BITS_10 : return dc_qlookup_10 [ clamp ( qindex + delta , 0 , MAXQ ) ] ; case VPX_BITS_12 : return dc_qlookup_12 [ clamp ( qindex + delta , 0 , MAXQ ) ] ; default : assert ( 0 && \"bit_depth<S2SV_blank>should<S2SV_blank>be<S2SV_blank>VPX_BITS_8,<S2SV_blank>VPX_BITS_10<S2SV_blank>or<S2SV_blank>VPX_BITS_12\" ) ; return - 1 ; } # else ( void ) bit_depth ; return dc_qlookup [ clamp ( qindex + delta , 0 , MAXQ ) ] ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17533\n\n```\nCWE-000 matvar_t * Mat_VarReadNextInfo4 ( mat_t * mat ) { int M , O , data_type , class_type ; mat_int32_t tmp ; long nBytes ; size_t readresult ; matvar_t * matvar = NULL ; union { mat_uint32_t u ; mat_uint8_t c [ 4 ] ; } endian ; if ( mat == NULL || mat -> fp == NULL ) return NULL ; else if ( NULL == ( matvar = Mat_VarCalloc ( ) ) ) return NULL ; readresult = fread ( & tmp , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } endian . u = 0x01020304 ; if ( tmp < 0 || tmp > 4052 ) { if ( Mat_int32Swap ( & tmp ) > 4052 ) { Mat_VarFree ( matvar ) ; return NULL ; } } M = ( int ) floor ( tmp / 1000.0 ) ; switch ( M ) { case 0 : mat -> byteswap = endian . c [ 0 ] != 4 ; break ; case 1 : mat -> byteswap = endian . c [ 0 ] != 1 ; break ; default : Mat_VarFree ( matvar ) ; return NULL ; } tmp -= M * 1000 ; O = ( int ) floor ( tmp / 100.0 ) ; if ( 0 != O ) { Mat_VarFree ( matvar ) ; return NULL ; } tmp -= O * 100 ; data_type = ( int ) floor ( tmp / 10.0 ) ; switch ( data_type ) { case 0 : matvar -> data_type = MAT_T_DOUBLE ; break ; case 1 : matvar -> data_type = MAT_T_SINGLE ; break ; case 2 : matvar -> data_type = MAT_T_INT32 ; break ; case 3 : matvar -> data_type = MAT_T_INT16 ; break ; case 4 : matvar -> data_type = MAT_T_UINT16 ; break ; case 5 : matvar -> data_type = MAT_T_UINT8 ; break ; default : Mat_VarFree ( matvar ) ; return NULL ; } tmp -= data_type * 10 ; class_type = ( int ) floor ( tmp / 1.0 ) ; switch ( class_type ) { case 0 : matvar -> class_type = MAT_C_DOUBLE ; break ; case 1 : matvar -> class_type = MAT_C_CHAR ; break ; case 2 : matvar -> class_type = MAT_C_SPARSE ; break ; default : Mat_VarFree ( matvar ) ; return NULL ; } matvar -> rank = 2 ; matvar -> dims = ( size_t * ) calloc ( 2 , sizeof ( * matvar -> dims ) ) ; if ( NULL == matvar -> dims ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( & tmp , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( mat -> byteswap ) Mat_int32Swap ( & tmp ) ; matvar -> dims [ 0 ] = tmp ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( & tmp , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( mat -> byteswap ) Mat_int32Swap ( & tmp ) ; matvar -> dims [ 1 ] = tmp ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( & ( matvar -> isComplex ) , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } if ( matvar -> isComplex && MAT_C_CHAR == matvar -> class_type ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( & tmp , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } if ( mat -> byteswap ) Mat_int32Swap ( & tmp ) ; if ( tmp < 1 ) { Mat_VarFree ( matvar ) ; return NULL ; } matvar -> name = ( char * ) malloc ( tmp ) ; if ( NULL == matvar -> name ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( matvar -> name , 1 , tmp , ( FILE * ) mat -> fp ) ; if ( tmp != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; <S2SV_StartBug> } <S2SV_EndBug> matvar -> internal -> datapos = ftell ( ( FILE * ) mat -> fp ) ; if ( matvar -> internal -> datapos == - 1L ) { Mat_VarFree ( matvar ) ; Mat_Critical ( \"Couldn\\'t<S2SV_blank>determine<S2SV_blank>file<S2SV_blank>position\" ) ; return NULL ; } { int err ; size_t tmp2 = Mat_SizeOf ( matvar -> data_type ) ; if ( matvar -> isComplex ) tmp2 *= 2 ; err = SafeMulDims ( matvar , & tmp2 ) ; if ( err ) { Mat_VarFree ( matvar ) ; Mat_Critical ( \"Integer<S2SV_blank>multiplication<S2SV_blank>overflow\" ) ; return NULL ; } nBytes = ( long ) tmp2 ; } ( void ) fseek ( ( FILE * ) mat -> fp , nBytes , SEEK_CUR ) ; return matvar ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } else { matvar -> name [ tmp - 1 ] = '\\\\0' ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18075\n\n```\nCWE-763 static int pcrypt_create_aead ( struct crypto_template * tmpl , struct rtattr * * tb , u32 type , u32 mask ) { struct pcrypt_instance_ctx * ctx ; struct crypto_attr_type * algt ; struct aead_instance * inst ; struct aead_alg * alg ; const char * name ; int err ; algt = crypto_get_attr_type ( tb ) ; if ( IS_ERR ( algt ) ) return PTR_ERR ( algt ) ; name = crypto_attr_alg_name ( tb [ 1 ] ) ; if ( IS_ERR ( name ) ) return PTR_ERR ( name ) ; inst = kzalloc ( sizeof ( * inst ) + sizeof ( * ctx ) , GFP_KERNEL ) ; if ( ! inst ) return - ENOMEM ; ctx = aead_instance_ctx ( inst ) ; crypto_set_aead_spawn ( & ctx -> spawn , aead_crypto_instance ( inst ) ) ; err = crypto_grab_aead ( & ctx -> spawn , name , 0 , 0 ) ; if ( err ) goto out_free_inst ; alg = crypto_spawn_aead_alg ( & ctx -> spawn ) ; err = pcrypt_init_instance ( aead_crypto_instance ( inst ) , & alg -> base ) ; if ( err ) goto out_drop_aead ; inst -> alg . base . cra_flags = CRYPTO_ALG_ASYNC ; inst -> alg . ivsize = crypto_aead_alg_ivsize ( alg ) ; inst -> alg . maxauthsize = crypto_aead_alg_maxauthsize ( alg ) ; inst -> alg . base . cra_ctxsize = sizeof ( struct pcrypt_aead_ctx ) ; inst -> alg . init = pcrypt_aead_init_tfm ; inst -> alg . exit = pcrypt_aead_exit_tfm ; inst -> alg . setkey = pcrypt_aead_setkey ; inst -> alg . setauthsize = pcrypt_aead_setauthsize ; inst -> alg . encrypt = pcrypt_aead_encrypt ; inst -> alg . decrypt = pcrypt_aead_decrypt ; <S2SV_StartBug> err = aead_register_instance ( tmpl , inst ) ; <S2SV_EndBug> if ( err ) goto out_drop_aead ; out : return err ; out_drop_aead : crypto_drop_aead ( & ctx -> spawn ) ; out_free_inst : kfree ( inst ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = pcrypt_aead_decrypt ; inst -> free = pcrypt_free ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static int get_results ( struct iperf_test * test ) { int r = 0 ; cJSON * j ; cJSON * j_cpu_util_total ; cJSON * j_cpu_util_user ; cJSON * j_cpu_util_system ; cJSON * j_sender_has_retransmits ; int result_has_retransmits ; cJSON * j_streams ; int n , i ; cJSON * j_stream ; cJSON * j_id ; cJSON * j_bytes ; cJSON * j_retransmits ; cJSON * j_jitter ; cJSON * j_errors ; cJSON * j_packets ; cJSON * j_server_output ; int sid , cerror , pcount ; double jitter ; iperf_size_t bytes_transferred ; int retransmits ; struct iperf_stream * sp ; j = JSON_read ( test -> ctrl_sck ) ; if ( j == NULL ) { i_errno = IERECVRESULTS ; r = - 1 ; } else { j_cpu_util_total = cJSON_GetObjectItem ( j , \"cpu_util_total\" ) ; j_cpu_util_user = cJSON_GetObjectItem ( j , \"cpu_util_user\" ) ; j_cpu_util_system = cJSON_GetObjectItem ( j , \"cpu_util_system\" ) ; j_sender_has_retransmits = cJSON_GetObjectItem ( j , \"sender_has_retransmits\" ) ; if ( j_cpu_util_total == NULL || j_cpu_util_user == NULL || j_cpu_util_system == NULL || j_sender_has_retransmits == NULL ) { i_errno = IERECVRESULTS ; r = - 1 ; } else { if ( test -> debug ) { printf ( \"get_results\\\\n%s\\\\n\" , cJSON_Print ( j ) ) ; } <S2SV_StartBug> test -> remote_cpu_util [ 0 ] = j_cpu_util_total -> valuefloat ; <S2SV_EndBug> <S2SV_StartBug> test -> remote_cpu_util [ 1 ] = j_cpu_util_user -> valuefloat ; <S2SV_EndBug> <S2SV_StartBug> test -> remote_cpu_util [ 2 ] = j_cpu_util_system -> valuefloat ; <S2SV_EndBug> result_has_retransmits = j_sender_has_retransmits -> valueint ; if ( ! test -> sender ) test -> sender_has_retransmits = result_has_retransmits ; j_streams = cJSON_GetObjectItem ( j , \"streams\" ) ; if ( j_streams == NULL ) { i_errno = IERECVRESULTS ; r = - 1 ; } else { n = cJSON_GetArraySize ( j_streams ) ; for ( i = 0 ; i < n ; ++ i ) { j_stream = cJSON_GetArrayItem ( j_streams , i ) ; if ( j_stream == NULL ) { i_errno = IERECVRESULTS ; r = - 1 ; } else { j_id = cJSON_GetObjectItem ( j_stream , \"id\" ) ; j_bytes = cJSON_GetObjectItem ( j_stream , \"bytes\" ) ; j_retransmits = cJSON_GetObjectItem ( j_stream , \"retransmits\" ) ; j_jitter = cJSON_GetObjectItem ( j_stream , \"jitter\" ) ; j_errors = cJSON_GetObjectItem ( j_stream , \"errors\" ) ; j_packets = cJSON_GetObjectItem ( j_stream , \"packets\" ) ; if ( j_id == NULL || j_bytes == NULL || j_retransmits == NULL || j_jitter == NULL || j_errors == NULL || j_packets == NULL ) { i_errno = IERECVRESULTS ; r = - 1 ; } else { sid = j_id -> valueint ; bytes_transferred = j_bytes -> valueint ; retransmits = j_retransmits -> valueint ; <S2SV_StartBug> jitter = j_jitter -> valuefloat ; <S2SV_EndBug> cerror = j_errors -> valueint ; pcount = j_packets -> valueint ; SLIST_FOREACH ( sp , & test -> streams , streams ) if ( sp -> id == sid ) break ; if ( sp == NULL ) { i_errno = IESTREAMID ; r = - 1 ; } else { if ( test -> sender ) { sp -> jitter = jitter ; sp -> cnt_error = cerror ; sp -> packet_count = pcount ; sp -> result -> bytes_received = bytes_transferred ; } else { sp -> result -> bytes_sent = bytes_transferred ; sp -> result -> stream_retrans = retransmits ; } } } } } if ( test -> role == 'c' && iperf_get_test_get_server_output ( test ) ) { j_server_output = cJSON_DetachItemFromObject ( j , \"server_output_json\" ) ; if ( j_server_output != NULL ) { test -> json_server_output = j_server_output ; } else { j_server_output = cJSON_GetObjectItem ( j , \"server_output_text\" ) ; if ( j_server_output != NULL ) { test -> server_output_text = strdup ( j_server_output -> valuestring ) ; } } } } } cJSON_Delete ( j ) ; } return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = j_cpu_util_total -> valuedouble <S2SV_ModEnd> ; test -> <S2SV_ModStart> = j_cpu_util_user -> valuedouble <S2SV_ModEnd> ; test -> <S2SV_ModStart> = j_cpu_util_system -> valuedouble <S2SV_ModEnd> ; result_has_retransmits = <S2SV_ModStart> = j_jitter -> valuedouble <S2SV_ModEnd> ; cerror =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5669\n\n```\nCWE-20 long do_shmat ( int shmid , char __user * shmaddr , int shmflg , ulong * raddr , unsigned long shmlba ) { struct shmid_kernel * shp ; unsigned long addr ; unsigned long size ; struct file * file ; int err ; unsigned long flags ; unsigned long prot ; int acc_mode ; struct ipc_namespace * ns ; struct shm_file_data * sfd ; struct path path ; fmode_t f_mode ; unsigned long populate = 0 ; err = - EINVAL ; if ( shmid < 0 ) goto out ; else if ( ( addr = ( ulong ) shmaddr ) ) { if ( addr & ( shmlba - 1 ) ) { <S2SV_StartBug> if ( shmflg & SHM_RND ) <S2SV_EndBug> addr &= ~ ( shmlba - 1 ) ; else # ifndef __ARCH_FORCE_SHMLBA if ( addr & ~ PAGE_MASK ) # endif goto out ; } flags = MAP_SHARED | MAP_FIXED ; } else { if ( ( shmflg & SHM_REMAP ) ) goto out ; flags = MAP_SHARED ; } if ( shmflg & SHM_RDONLY ) { prot = PROT_READ ; acc_mode = S_IRUGO ; f_mode = FMODE_READ ; } else { prot = PROT_READ | PROT_WRITE ; acc_mode = S_IRUGO | S_IWUGO ; f_mode = FMODE_READ | FMODE_WRITE ; } if ( shmflg & SHM_EXEC ) { prot |= PROT_EXEC ; acc_mode |= S_IXUGO ; } ns = current -> nsproxy -> ipc_ns ; rcu_read_lock ( ) ; shp = shm_obtain_object_check ( ns , shmid ) ; if ( IS_ERR ( shp ) ) { err = PTR_ERR ( shp ) ; goto out_unlock ; } err = - EACCES ; if ( ipcperms ( ns , & shp -> shm_perm , acc_mode ) ) goto out_unlock ; err = security_shm_shmat ( shp , shmaddr , shmflg ) ; if ( err ) goto out_unlock ; ipc_lock_object ( & shp -> shm_perm ) ; if ( ! ipc_valid_object ( & shp -> shm_perm ) ) { ipc_unlock_object ( & shp -> shm_perm ) ; err = - EIDRM ; goto out_unlock ; } path = shp -> shm_file -> f_path ; path_get ( & path ) ; shp -> shm_nattch ++ ; size = i_size_read ( d_inode ( path . dentry ) ) ; ipc_unlock_object ( & shp -> shm_perm ) ; rcu_read_unlock ( ) ; err = - ENOMEM ; sfd = kzalloc ( sizeof ( * sfd ) , GFP_KERNEL ) ; if ( ! sfd ) { path_put ( & path ) ; goto out_nattch ; } file = alloc_file ( & path , f_mode , is_file_hugepages ( shp -> shm_file ) ? & shm_file_operations_huge : & shm_file_operations ) ; err = PTR_ERR ( file ) ; if ( IS_ERR ( file ) ) { kfree ( sfd ) ; path_put ( & path ) ; goto out_nattch ; } file -> private_data = sfd ; file -> f_mapping = shp -> shm_file -> f_mapping ; sfd -> id = shp -> shm_perm . id ; sfd -> ns = get_ipc_ns ( ns ) ; sfd -> file = shp -> shm_file ; sfd -> vm_ops = NULL ; err = security_mmap_file ( file , prot , flags ) ; if ( err ) goto out_fput ; if ( down_write_killable ( & current -> mm -> mmap_sem ) ) { err = - EINTR ; goto out_fput ; } if ( addr && ! ( shmflg & SHM_REMAP ) ) { err = - EINVAL ; if ( addr + size < addr ) goto invalid ; if ( find_vma_intersection ( current -> mm , addr , addr + size ) ) goto invalid ; } addr = do_mmap_pgoff ( file , addr , size , prot , flags , 0 , & populate , NULL ) ; * raddr = addr ; err = 0 ; if ( IS_ERR_VALUE ( addr ) ) err = ( long ) addr ; invalid : up_write ( & current -> mm -> mmap_sem ) ; if ( populate ) mm_populate ( addr , populate ) ; out_fput : fput ( file ) ; out_nattch : down_write ( & shm_ids ( ns ) . rwsem ) ; shp = shm_lock ( ns , shmid ) ; shp -> shm_nattch -- ; if ( shm_may_destroy ( ns , shp ) ) shm_destroy ( ns , shp ) ; else shm_unlock ( shp ) ; up_write ( & shm_ids ( ns ) . rwsem ) ; return err ; out_unlock : rcu_read_unlock ( ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ( <S2SV_ModStart> shmflg & SHM_RND ) && addr >= shmlba\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7101\n\n```\nCWE-125 static Image * ReadSGIImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; SGIInfo iris_info ; size_t bytes_per_pixel , quantum ; ssize_t count , y , z ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } iris_info . magic = ReadBlobMSBShort ( image ) ; do { if ( iris_info . magic != 0x01DA ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . storage = ( unsigned char ) ReadBlobByte ( image ) ; switch ( iris_info . storage ) { case 0x00 : image -> compression = NoCompression ; break ; case 0x01 : image -> compression = RLECompression ; break ; default : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } iris_info . bytes_per_pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( iris_info . bytes_per_pixel == 0 ) || ( iris_info . bytes_per_pixel > 2 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . dimension = ReadBlobMSBShort ( image ) ; iris_info . columns = ReadBlobMSBShort ( image ) ; iris_info . rows = ReadBlobMSBShort ( image ) ; iris_info . depth = ReadBlobMSBShort ( image ) ; if ( ( iris_info . depth == 0 ) || ( iris_info . depth > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . minimum_value = ReadBlobMSBLong ( image ) ; iris_info . maximum_value = ReadBlobMSBLong ( image ) ; iris_info . sans = ReadBlobMSBLong ( image ) ; <S2SV_StartBug> ( void ) ReadBlob ( image , sizeof ( iris_info . name ) , ( unsigned char * ) <S2SV_EndBug> <S2SV_StartBug> iris_info . name ) ; <S2SV_EndBug> iris_info . name [ sizeof ( iris_info . name ) - 1 ] = '\\\\0' ; if ( * iris_info . name != '\\\\0' ) ( void ) SetImageProperty ( image , \"label\" , iris_info . name , exception ) ; iris_info . pixel_format = ReadBlobMSBLong ( image ) ; if ( iris_info . pixel_format != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , sizeof ( iris_info . filler ) , iris_info . filler ) ; <S2SV_StartBug> ( void ) count ; <S2SV_EndBug> image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; image -> depth = ( size_t ) MagickMin ( iris_info . depth , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . pixel_format == 0 ) image -> depth = ( size_t ) MagickMin ( ( size_t ) 8 * iris_info . bytes_per_pixel , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . depth < 3 ) { image -> storage_class = PseudoClass ; image -> colors = iris_info . bytes_per_pixel > 1 ? 65535 : 256 ; } <S2SV_StartBug> if ( EOFBlob ( image ) != MagickFalse ) <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; bytes_per_pixel = ( size_t ) iris_info . bytes_per_pixel ; number_pixels = ( MagickSizeType ) iris_info . columns * iris_info . rows ; if ( ( 4 * bytes_per_pixel * number_pixels ) != ( ( MagickSizeType ) ( size_t ) ( 4 * bytes_per_pixel * number_pixels ) ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info = AcquireVirtualMemory ( iris_info . columns , iris_info . rows * 4 * bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( int ) iris_info . storage != 0x01 ) { unsigned char * scanline ; scanline = ( unsigned char * ) AcquireQuantumMemory ( iris_info . columns , bytes_per_pixel * sizeof ( * scanline ) ) ; if ( scanline == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels + bytes_per_pixel * z ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { count = ReadBlob ( image , bytes_per_pixel * iris_info . columns , scanline ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; if ( bytes_per_pixel == 2 ) for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ 2 * x ] ; * ( p + 1 ) = scanline [ 2 * x + 1 ] ; p += 8 ; } else for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ x ] ; p += 4 ; } } } scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; } else { MemoryInfo * packet_info ; size_t * runlength ; ssize_t offset , * offsets ; unsigned char * packets ; unsigned int data_order ; offsets = ( ssize_t * ) AcquireQuantumMemory ( ( size_t ) iris_info . rows , iris_info . depth * sizeof ( * offsets ) ) ; runlength = ( size_t * ) AcquireQuantumMemory ( iris_info . rows , iris_info . depth * sizeof ( * runlength ) ) ; packet_info = AcquireVirtualMemory ( ( size_t ) iris_info . columns + 10UL , 4UL * sizeof ( * packets ) ) ; if ( ( offsets == ( ssize_t * ) NULL ) || ( runlength == ( size_t * ) NULL ) || ( packet_info == ( MemoryInfo * ) NULL ) ) { if ( offsets == ( ssize_t * ) NULL ) offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; if ( runlength == ( size_t * ) NULL ) runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; if ( packet_info == ( MemoryInfo * ) NULL ) packet_info = RelinquishVirtualMemory ( packet_info ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } packets = ( unsigned char * ) GetVirtualMemoryBlob ( packet_info ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) offsets [ i ] = ReadBlobMSBSignedLong ( image ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) { runlength [ i ] = ReadBlobMSBLong ( image ) ; if ( runlength [ i ] > ( 4 * ( size_t ) iris_info . columns + 10 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } offset = 0 ; data_order = 0 ; for ( y = 0 ; ( ( y < ( ssize_t ) iris_info . rows ) && ( data_order == 0 ) ) ; y ++ ) for ( z = 0 ; ( ( z < ( ssize_t ) iris_info . depth ) && ( data_order == 0 ) ) ; z ++ ) { if ( offsets [ y + z * iris_info . rows ] < offset ) data_order = 1 ; offset = offsets [ y + z * iris_info . rows ] ; } offset = ( ssize_t ) TellBlob ( image ) ; if ( data_order == 1 ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( ssize_t ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , 1L * iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } } } else { MagickOffsetType position ; position = TellBlob ( image ) ; p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( ssize_t ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , 1L * iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } offset = ( ssize_t ) SeekBlob ( image , position , SEEK_SET ) ; } packet_info = RelinquishVirtualMemory ( packet_info ) ; runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; } image -> alpha_trait = iris_info . depth == 4 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; if ( image -> storage_class == DirectClass ) { if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 0 ) << 8 ) | ( * ( p + 1 ) ) ) ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 2 ) << 8 ) | ( * ( p + 3 ) ) ) ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 4 ) << 8 ) | ( * ( p + 5 ) ) ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 6 ) << 8 ) | ( * ( p + 7 ) ) ) ) , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + 1 ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * ( p + 3 ) ) , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { quantum = ( * p << 8 ) ; quantum |= ( * ( p + 1 ) ) ; SetPixelIndex ( image , ( Quantum ) quantum , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; iris_info . magic = ReadBlobMSBShort ( image ) ; if ( iris_info . magic == 0x01DA ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( iris_info . magic == 0x01DA ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> image ) ; count = <S2SV_ModEnd> ReadBlob ( image <S2SV_ModStart> iris_info . name ) ; if ( count != sizeof ( iris_info . name ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" <S2SV_ModStart> filler ) ; if ( count != sizeof ( iris_info . filler ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) <S2SV_ModEnd> ; image -> <S2SV_ModStart> } if ( <S2SV_ModEnd> ( image_info ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static void rdpsnd_process_training ( STREAM in ) { uint16 tick ; uint16 packsize ; <S2SV_StartBug> STREAM out ; <S2SV_EndBug> in_uint16_le ( in , tick ) ; in_uint16_le ( in , packsize ) ; logger ( Sound , Debug , \"rdpsnd_process_training(),<S2SV_blank>tick=0x%04x\" , ( unsigned ) tick ) ; out = rdpsnd_init_packet ( SNDC_TRAINING , 4 ) ; out_uint16_le ( out , tick ) ; out_uint16_le ( out , packsize ) ; s_mark_end ( out ) ; rdpsnd_send ( out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> STREAM out ; struct stream packet = * in ; if ( ! s_check_rem ( in , 4 ) ) { rdp_protocol_error ( \"rdpsnd_process_training(),<S2SV_blank>consume<S2SV_blank>of<S2SV_blank>training<S2SV_blank>data<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3227\n\n```\nCWE-200 static int caif_seqpkt_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sk_buff * skb ; int ret ; int copylen ; ret = - EOPNOTSUPP ; if ( m -> msg_flags & MSG_OOB ) goto read_error ; <S2SV_StartBug> skb = skb_recv_datagram ( sk , flags , 0 , & ret ) ; <S2SV_EndBug> if ( ! skb ) goto read_error ; copylen = skb -> len ; if ( len < copylen ) { m -> msg_flags |= MSG_TRUNC ; copylen = len ; } ret = skb_copy_datagram_iovec ( skb , 0 , m -> msg_iov , copylen ) ; if ( ret ) goto out_free ; ret = ( flags & MSG_TRUNC ) ? skb -> len : copylen ; out_free : skb_free_datagram ( sk , skb ) ; caif_check_flow_release ( sk ) ; return ret ; read_error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto read_error ; m -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10088\n\n```\nCWE-416 static ssize_t bsg_write ( struct file * file , const char __user * buf , size_t count , loff_t * ppos ) { struct bsg_device * bd = file -> private_data ; ssize_t bytes_written ; int ret ; <S2SV_StartBug> dprintk ( \"%s:<S2SV_blank>write<S2SV_blank>%Zd<S2SV_blank>bytes\\\\n\" , bd -> name , count ) ; <S2SV_EndBug> bsg_set_block ( bd , file ) ; bytes_written = 0 ; ret = __bsg_write ( bd , buf , count , & bytes_written , file -> f_mode & FMODE_WRITE ) ; * ppos = bytes_written ; if ( ! bytes_written || err_block_err ( ret ) ) bytes_written = ret ; dprintk ( \"%s:<S2SV_blank>returning<S2SV_blank>%Zd\\\\n\" , bd -> name , bytes_written ) ; return bytes_written ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , count ) ; if ( unlikely ( segment_eq ( get_fs ( ) , KERNEL_DS ) ) ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int calc_active_worst_quality_one_pass_cbr ( const VP9_COMP * cpi ) { const VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> const VP9_CONFIG * oxcf = & cpi -> oxcf ; <S2SV_EndBug> const RATE_CONTROL * rc = & cpi -> rc ; <S2SV_StartBug> int64_t critical_level = oxcf -> optimal_buffer_level >> 2 ; <S2SV_EndBug> int64_t buff_lvl_step = 0 ; int adjustment = 0 ; <S2SV_StartBug> int active_worst_quality ; <S2SV_EndBug> if ( cm -> frame_type == KEY_FRAME ) return rc -> worst_quality ; <S2SV_StartBug> if ( cm -> current_video_frame > 1 ) <S2SV_EndBug> active_worst_quality = MIN ( rc -> worst_quality , <S2SV_StartBug> rc -> avg_frame_qindex [ INTER_FRAME ] * 5 / 4 ) ; <S2SV_EndBug> else active_worst_quality = MIN ( rc -> worst_quality , <S2SV_StartBug> rc -> avg_frame_qindex [ KEY_FRAME ] * 3 / 2 ) ; <S2SV_EndBug> if ( rc -> buffer_level > oxcf -> optimal_buffer_level ) { int max_adjustment_down = active_worst_quality / 3 ; if ( max_adjustment_down ) { buff_lvl_step = ( ( oxcf -> maximum_buffer_size - oxcf -> optimal_buffer_level ) / max_adjustment_down ) ; if ( buff_lvl_step ) adjustment = ( int ) ( ( rc -> buffer_level - oxcf -> optimal_buffer_level ) / buff_lvl_step ) ; active_worst_quality -= adjustment ; } } else if ( rc -> buffer_level > critical_level ) { if ( critical_level ) { buff_lvl_step = ( oxcf -> optimal_buffer_level - critical_level ) ; if ( buff_lvl_step ) { adjustment = <S2SV_StartBug> ( int ) ( ( rc -> worst_quality - rc -> avg_frame_qindex [ INTER_FRAME ] ) * <S2SV_EndBug> <S2SV_StartBug> ( oxcf -> optimal_buffer_level - rc -> buffer_level ) / <S2SV_EndBug> buff_lvl_step ) ; } active_worst_quality = rc -> avg_frame_qindex [ INTER_FRAME ] + adjustment ; } } else { active_worst_quality = rc -> worst_quality ; } return active_worst_quality ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> common ; const RATE_CONTROL * rc <S2SV_ModEnd> = & cpi <S2SV_ModStart> & cpi -> <S2SV_ModEnd> rc ; int64_t <S2SV_ModStart> int64_t critical_level = rc <S2SV_ModEnd> -> optimal_buffer_level >> <S2SV_ModStart> -> optimal_buffer_level >> 3 <S2SV_ModEnd> ; int64_t buff_lvl_step <S2SV_ModStart> ; int active_worst_quality ; int ambient_qp ; unsigned int num_frames_weight_key = 5 * cpi -> svc . number_temporal_layers <S2SV_ModStart> -> worst_quality ; ambient_qp = <S2SV_ModEnd> ( cm -> <S2SV_ModStart> cm -> current_video_frame < num_frames_weight_key ) ? MIN ( <S2SV_ModEnd> rc -> avg_frame_qindex <S2SV_ModStart> [ INTER_FRAME ] <S2SV_ModEnd> , rc -> <S2SV_ModStart> [ KEY_FRAME ] ) : <S2SV_ModEnd> rc -> avg_frame_qindex <S2SV_ModStart> [ INTER_FRAME ] ; active_worst_quality = MIN ( rc -> worst_quality , ambient_qp * 5 / 4 ) ; if ( <S2SV_ModEnd> rc -> buffer_level <S2SV_ModStart> rc -> buffer_level > rc -> optimal_buffer_level ) { int max_adjustment_down = active_worst_quality / 3 ; if ( max_adjustment_down ) { buff_lvl_step = ( ( rc -> maximum_buffer_size - rc -> optimal_buffer_level ) / max_adjustment_down ) ; if ( buff_lvl_step ) adjustment = ( int ) ( ( rc -> buffer_level - rc -> optimal_buffer_level ) / buff_lvl_step ) ; active_worst_quality -= adjustment ; } } else if ( rc -> buffer_level > critical_level ) { if ( critical_level ) { buff_lvl_step = ( rc -> optimal_buffer_level - critical_level ) ; if ( buff_lvl_step ) { adjustment = ( int ) ( ( rc -> worst_quality - ambient_qp ) * ( rc -> optimal_buffer_level - rc -> buffer_level ) / buff_lvl_step ) ; } active_worst_quality = ambient_qp <S2SV_ModEnd> + adjustment ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6976\n\n```\nCWE-200 void * vips_tracked_malloc ( size_t size ) { void * buf ; vips_tracked_init ( ) ; size += 16 ; <S2SV_StartBug> if ( ! ( buf = g_try_malloc ( size ) ) ) { <S2SV_EndBug> # ifdef DEBUG g_assert_not_reached ( ) ; # endif vips_error ( \"vips_tracked\" , _ ( \"out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>---<S2SV_blank>size<S2SV_blank>==<S2SV_blank>%dMB\" ) , ( int ) ( size / ( 1024.0 * 1024.0 ) ) ) ; g_warning ( _ ( \"out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>---<S2SV_blank>size<S2SV_blank>==<S2SV_blank>%dMB\" ) , ( int ) ( size / ( 1024.0 * 1024.0 ) ) ) ; return ( NULL ) ; } g_mutex_lock ( vips_tracked_mutex ) ; * ( ( size_t * ) buf ) = size ; buf = ( void * ) ( ( char * ) buf + 16 ) ; vips_tracked_mem += size ; if ( vips_tracked_mem > vips_tracked_mem_highwater ) vips_tracked_mem_highwater = vips_tracked_mem ; vips_tracked_allocs += 1 ; # ifdef DEBUG_VERBOSE printf ( \"vips_tracked_malloc:<S2SV_blank>%p,<S2SV_blank>%zd<S2SV_blank>bytes\\\\n\" , buf , size ) ; # endif g_mutex_unlock ( vips_tracked_mutex ) ; VIPS_GATE_MALLOC ( size ) ; return ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( buf = g_try_malloc0 <S2SV_ModEnd> ( size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3689\n\n```\nCWE-000 static int ims_pcu_parse_cdc_data ( struct usb_interface * intf , struct ims_pcu * pcu ) { const struct usb_cdc_union_desc * union_desc ; struct usb_host_interface * alt ; union_desc = ims_pcu_get_cdc_union_desc ( intf ) ; if ( ! union_desc ) return - EINVAL ; pcu -> ctrl_intf = usb_ifnum_to_if ( pcu -> udev , union_desc -> bMasterInterface0 ) ; <S2SV_StartBug> alt = pcu -> ctrl_intf -> cur_altsetting ; <S2SV_EndBug> pcu -> ep_ctrl = & alt -> endpoint [ 0 ] . desc ; pcu -> max_ctrl_size = usb_endpoint_maxp ( pcu -> ep_ctrl ) ; pcu -> data_intf = usb_ifnum_to_if ( pcu -> udev , union_desc -> bSlaveInterface0 ) ; <S2SV_StartBug> alt = pcu -> data_intf -> cur_altsetting ; <S2SV_EndBug> if ( alt -> desc . bNumEndpoints != 2 ) { dev_err ( pcu -> dev , \"Incorrect<S2SV_blank>number<S2SV_blank>of<S2SV_blank>endpoints<S2SV_blank>on<S2SV_blank>data<S2SV_blank>interface<S2SV_blank>(%d)\\\\n\" , alt -> desc . bNumEndpoints ) ; return - EINVAL ; } pcu -> ep_out = & alt -> endpoint [ 0 ] . desc ; if ( ! usb_endpoint_is_bulk_out ( pcu -> ep_out ) ) { dev_err ( pcu -> dev , \"First<S2SV_blank>endpoint<S2SV_blank>on<S2SV_blank>data<S2SV_blank>interface<S2SV_blank>is<S2SV_blank>not<S2SV_blank>BULK<S2SV_blank>OUT\\\\n\" ) ; return - EINVAL ; } pcu -> max_out_size = usb_endpoint_maxp ( pcu -> ep_out ) ; if ( pcu -> max_out_size < 8 ) { dev_err ( pcu -> dev , \"Max<S2SV_blank>OUT<S2SV_blank>packet<S2SV_blank>size<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>(%zd)\\\\n\" , pcu -> max_out_size ) ; return - EINVAL ; } pcu -> ep_in = & alt -> endpoint [ 1 ] . desc ; if ( ! usb_endpoint_is_bulk_in ( pcu -> ep_in ) ) { dev_err ( pcu -> dev , \"Second<S2SV_blank>endpoint<S2SV_blank>on<S2SV_blank>data<S2SV_blank>interface<S2SV_blank>is<S2SV_blank>not<S2SV_blank>BULK<S2SV_blank>IN\\\\n\" ) ; return - EINVAL ; } pcu -> max_in_size = usb_endpoint_maxp ( pcu -> ep_in ) ; if ( pcu -> max_in_size < 8 ) { dev_err ( pcu -> dev , \"Max<S2SV_blank>IN<S2SV_blank>packet<S2SV_blank>size<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>(%zd)\\\\n\" , pcu -> max_in_size ) ; return - EINVAL ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bMasterInterface0 ) ; if ( ! pcu -> ctrl_intf ) return - EINVAL ; <S2SV_ModStart> bSlaveInterface0 ) ; if ( ! pcu -> data_intf ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13009\n\n```\nCWE-125 int mobility_print ( netdissect_options * ndo , const u_char * bp , const u_char * bp2 _U_ ) { const struct ip6_mobility * mh ; const u_char * ep ; unsigned mhlen , hlen ; uint8_t type ; mh = ( const struct ip6_mobility * ) bp ; ep = ndo -> ndo_snapend ; if ( ! ND_TTEST ( mh -> ip6m_len ) ) { mhlen = ep - bp ; goto trunc ; } mhlen = ( mh -> ip6m_len + 1 ) << 3 ; ND_TCHECK ( mh -> ip6m_type ) ; type = mh -> ip6m_type ; if ( type <= IP6M_MAX && mhlen < ip6m_hdrlen [ type ] ) { ND_PRINT ( ( ndo , \"(header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>for<S2SV_blank>type<S2SV_blank>%u)\" , mhlen , type ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"mobility:<S2SV_blank>%s\" , tok2str ( ip6m_str , \"type-#%u\" , type ) ) ) ; switch ( type ) { case IP6M_BINDING_REQUEST : hlen = IP6M_MINLEN ; break ; case IP6M_HOME_TEST_INIT : case IP6M_CAREOF_TEST_INIT : hlen = IP6M_MINLEN ; if ( ndo -> ndo_vflag ) { <S2SV_StartBug> ND_TCHECK2 ( * mh , hlen + 8 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Init<S2SV_blank>Cookie=%08x:%08x\" , type == IP6M_HOME_TEST_INIT ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; break ; case IP6M_HOME_TEST : case IP6M_CAREOF_TEST : ND_TCHECK ( mh -> ip6m_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>nonce<S2SV_blank>id=0x%x\" , EXTRACT_16BITS ( & mh -> ip6m_data16 [ 0 ] ) ) ) ; hlen = IP6M_MINLEN ; if ( ndo -> ndo_vflag ) { <S2SV_StartBug> ND_TCHECK2 ( * mh , hlen + 8 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Init<S2SV_blank>Cookie=%08x:%08x\" , type == IP6M_HOME_TEST ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; if ( ndo -> ndo_vflag ) { <S2SV_StartBug> ND_TCHECK2 ( * mh , hlen + 8 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Keygen<S2SV_blank>Token=%08x:%08x\" , type == IP6M_HOME_TEST ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; break ; case IP6M_BINDING_UPDATE : ND_TCHECK ( mh -> ip6m_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>seq#=%u\" , EXTRACT_16BITS ( & mh -> ip6m_data16 [ 0 ] ) ) ) ; hlen = IP6M_MINLEN ; <S2SV_StartBug> ND_TCHECK2 ( * mh , hlen + 1 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( bp [ hlen ] & 0xf0 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( bp [ hlen ] & 0x80 ) ND_PRINT ( ( ndo , \"A\" ) ) ; if ( bp [ hlen ] & 0x40 ) ND_PRINT ( ( ndo , \"H\" ) ) ; if ( bp [ hlen ] & 0x20 ) ND_PRINT ( ( ndo , \"L\" ) ) ; if ( bp [ hlen ] & 0x10 ) <S2SV_StartBug> ND_PRINT ( ( ndo , \"K\" ) ) ; <S2SV_EndBug> hlen += 1 ; hlen += 1 ; <S2SV_StartBug> ND_TCHECK2 ( * mh , hlen + 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>lifetime=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) << 2 ) ) ; hlen += 2 ; break ; case IP6M_BINDING_ACK : ND_TCHECK ( mh -> ip6m_data8 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>status=%u\" , mh -> ip6m_data8 [ 0 ] ) ) ; <S2SV_StartBug> if ( mh -> ip6m_data8 [ 1 ] & 0x80 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>K\" ) ) ; hlen = IP6M_MINLEN ; <S2SV_StartBug> ND_TCHECK2 ( * mh , hlen + 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>seq#=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) ) ) ; hlen += 2 ; <S2SV_StartBug> ND_TCHECK2 ( * mh , hlen + 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>lifetime=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) << 2 ) ) ; hlen += 2 ; break ; case IP6M_BINDING_ERROR : ND_TCHECK ( mh -> ip6m_data8 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>status=%u\" , mh -> ip6m_data8 [ 0 ] ) ) ; hlen = IP6M_MINLEN ; <S2SV_StartBug> ND_TCHECK2 ( * mh , hlen + 16 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>homeaddr<S2SV_blank>%s\" , ip6addr_string ( ndo , & bp [ hlen ] ) ) ) ; hlen += 16 ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>len=%u\" , mh -> ip6m_len ) ) ; return ( mhlen ) ; break ; } if ( ndo -> ndo_vflag ) if ( mobility_opt_print ( ndo , & bp [ hlen ] , mhlen - hlen ) ) goto trunc ; return ( mhlen ) ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ndo_vflag ) { ND_TCHECK_32BITS ( & bp [ hlen + 4 ] <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> ndo_vflag ) { ND_TCHECK_32BITS ( & bp [ hlen + 4 ] <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> ndo_vflag ) { ND_TCHECK_32BITS ( & bp [ hlen + 4 ] <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> = IP6M_MINLEN ; ND_TCHECK_16BITS ( & bp [ hlen ] <S2SV_ModEnd> ) ; if <S2SV_ModStart> & 0xf0 ) { <S2SV_ModStart> ) ) ; } <S2SV_ModStart> += 1 ; ND_TCHECK_16BITS ( & bp [ hlen ] <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> ) ) ; ND_TCHECK <S2SV_ModEnd> ( mh -> <S2SV_ModStart> [ 1 ] ) ; if ( mh -> ip6m_data8 [ 1 ] <S2SV_ModStart> = IP6M_MINLEN ; ND_TCHECK_16BITS ( & bp [ hlen ] <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> += 2 ; ND_TCHECK_16BITS ( & bp [ hlen ] <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> ; ND_TCHECK2 ( bp [ hlen ] , <S2SV_ModEnd> 16 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3879\n\n```\nCWE-284 EAS_RESULT DLSParser ( EAS_HW_DATA_HANDLE hwInstData , EAS_FILE_HANDLE fileHandle , EAS_I32 offset , EAS_DLSLIB_HANDLE * ppDLS ) { EAS_RESULT result ; SDLS_SYNTHESIZER_DATA dls ; EAS_U32 temp ; EAS_I32 pos ; EAS_I32 chunkPos ; EAS_I32 size ; EAS_I32 instSize ; EAS_I32 rgnPoolSize ; EAS_I32 artPoolSize ; EAS_I32 waveLenSize ; EAS_I32 endDLS ; EAS_I32 wvplPos ; EAS_I32 wvplSize ; EAS_I32 linsPos ; EAS_I32 linsSize ; EAS_I32 ptblPos ; EAS_I32 ptblSize ; void * p ; EAS_HWMemSet ( & dls , 0 , sizeof ( dls ) ) ; dls . hwInstData = hwInstData ; dls . fileHandle = fileHandle ; * ppDLS = NULL ; if ( ( result = EAS_HWFileSeek ( dls . hwInstData , dls . fileHandle , offset ) ) != EAS_SUCCESS ) return result ; if ( ( result = EAS_HWReadFile ( dls . hwInstData , dls . fileHandle , & temp , sizeof ( temp ) , & size ) ) != EAS_SUCCESS ) return result ; dls . bigEndian = ( temp == CHUNK_RIFF ) ; pos = offset ; if ( ( result = NextChunk ( & dls , & pos , & temp , & size ) ) != EAS_SUCCESS ) return result ; if ( temp != CHUNK_DLS ) { { } return EAS_ERROR_FILE_FORMAT ; } linsSize = wvplSize = ptblSize = linsPos = wvplPos = ptblPos = 0 ; endDLS = offset + size ; pos = offset + 12 ; while ( pos < endDLS ) { chunkPos = pos ; if ( ( result = NextChunk ( & dls , & pos , & temp , & size ) ) != EAS_SUCCESS ) return result ; switch ( temp ) { case CHUNK_CDL : if ( ( result = Parse_cdl ( & dls , size , & temp ) ) != EAS_SUCCESS ) return result ; if ( ! temp ) return EAS_ERROR_UNRECOGNIZED_FORMAT ; break ; case CHUNK_LINS : linsPos = chunkPos + 12 ; linsSize = size - 4 ; break ; case CHUNK_WVPL : wvplPos = chunkPos + 12 ; wvplSize = size - 4 ; break ; case CHUNK_PTBL : ptblPos = chunkPos + 8 ; ptblSize = size - 4 ; break ; default : break ; } } if ( linsSize == 0 ) { { } return EAS_ERROR_UNRECOGNIZED_FORMAT ; } if ( wvplSize == 0 ) { { } return EAS_ERROR_UNRECOGNIZED_FORMAT ; } if ( ( ptblSize == 0 ) || ( ptblSize > DLS_MAX_WAVE_COUNT * sizeof ( POOLCUE ) + sizeof ( POOLTABLE ) ) ) { { } return EAS_ERROR_UNRECOGNIZED_FORMAT ; } if ( ( result = Parse_ptbl ( & dls , ptblPos , wvplPos , wvplSize ) ) != EAS_SUCCESS ) return result ; if ( ( dls . waveCount == 0 ) || ( dls . waveCount > DLS_MAX_WAVE_COUNT ) ) { { } return EAS_ERROR_FILE_FORMAT ; } dls . wsmpData = EAS_HWMalloc ( dls . hwInstData , ( EAS_I32 ) ( sizeof ( S_WSMP_DATA ) * dls . waveCount ) ) ; if ( dls . wsmpData == NULL ) { { } return EAS_ERROR_MALLOC_FAILED ; } EAS_HWMemSet ( dls . wsmpData , 0 , ( EAS_I32 ) ( sizeof ( S_WSMP_DATA ) * dls . waveCount ) ) ; result = Parse_lins ( & dls , linsPos , linsSize ) ; if ( result == EAS_SUCCESS ) { if ( ( dls . regionCount == 0 ) || ( dls . regionCount > DLS_MAX_REGION_COUNT ) ) { { } return EAS_ERROR_FILE_FORMAT ; } if ( ( dls . artCount == 0 ) || ( dls . artCount > DLS_MAX_ART_COUNT ) ) { { } return EAS_ERROR_FILE_FORMAT ; } if ( ( dls . instCount == 0 ) || ( dls . instCount > DLS_MAX_INST_COUNT ) ) { { } return EAS_ERROR_FILE_FORMAT ; } instSize = ( EAS_I32 ) ( sizeof ( S_PROGRAM ) * dls . instCount ) ; rgnPoolSize = ( EAS_I32 ) ( sizeof ( S_DLS_REGION ) * dls . regionCount ) ; dls . artCount ++ ; artPoolSize = ( EAS_I32 ) ( sizeof ( S_DLS_ARTICULATION ) * dls . artCount ) ; waveLenSize = ( EAS_I32 ) ( dls . waveCount * sizeof ( EAS_U32 ) ) ; size = ( EAS_I32 ) sizeof ( S_EAS ) + instSize + rgnPoolSize + artPoolSize + ( 2 * waveLenSize ) + ( EAS_I32 ) dls . wavePoolSize ; if ( size <= 0 ) { return EAS_ERROR_FILE_FORMAT ; } dls . pDLS = EAS_HWMalloc ( dls . hwInstData , size ) ; if ( dls . pDLS == NULL ) { { } return EAS_ERROR_MALLOC_FAILED ; } EAS_HWMemSet ( dls . pDLS , 0 , size ) ; dls . pDLS -> refCount = 1 ; p = PtrOfs ( dls . pDLS , sizeof ( S_EAS ) ) ; dls . pDLS -> numDLSPrograms = ( EAS_U16 ) dls . instCount ; dls . pDLS -> pDLSPrograms = p ; p = PtrOfs ( p , instSize ) ; dls . pDLS -> pDLSRegions = p ; dls . pDLS -> numDLSRegions = ( EAS_U16 ) dls . regionCount ; p = PtrOfs ( p , rgnPoolSize ) ; dls . pDLS -> numDLSArticulations = ( EAS_U16 ) dls . artCount ; dls . pDLS -> pDLSArticulations = p ; p = PtrOfs ( p , artPoolSize ) ; dls . pDLS -> numDLSSamples = ( EAS_U16 ) dls . waveCount ; dls . pDLS -> pDLSSampleLen = p ; p = PtrOfs ( p , waveLenSize ) ; dls . pDLS -> pDLSSampleOffsets = p ; p = PtrOfs ( p , waveLenSize ) ; dls . pDLS -> pDLSSamples = p ; dls . filterUsed = EAS_FALSE ; result = Parse_ptbl ( & dls , ptblPos , wvplPos , wvplSize ) ; } <S2SV_StartBug> Convert_art ( & dls , & defaultArt , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> dls . artCount = 1 ; <S2SV_EndBug> dls . regionCount = dls . instCount = 0 ; if ( result == EAS_SUCCESS ) result = Parse_lins ( & dls , linsPos , linsSize ) ; if ( dls . wsmpData ) EAS_HWFree ( dls . hwInstData , dls . wsmpData ) ; if ( result == EAS_SUCCESS ) { * ppDLS = dls . pDLS ; # ifdef _DEBUG_DLS DumpDLS ( dls . pDLS ) ; # endif } else DLSCleanup ( dls . hwInstData , dls . pDLS ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( dls . pDLS ) { <S2SV_ModStart> = 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12990\n\n```\nCWE-835 static const u_char * ikev1_nonce_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len _U_ , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { struct isakmp_gen e ; ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_NONCE ) ) ) ; ND_TCHECK ( * ext ) ; UNALIGNED_MEMCPY ( & e , ext , sizeof ( e ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>n<S2SV_blank>len=%d\" , ntohs ( e . len ) - 4 ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( 2 < ndo -> ndo_vflag && 4 < ntohs ( e . len ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( ext + 1 ) , ntohs ( e . len ) - 4 ) ) goto trunc ; <S2SV_StartBug> } else if ( 1 < ndo -> ndo_vflag && 4 < ntohs ( e . len ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( ! ike_show_somedata ( ndo , ( const u_char * ) ( const uint8_t * ) ( ext + 1 ) , ep ) ) <S2SV_EndBug> goto trunc ; } <S2SV_StartBug> return ( const u_char * ) ext + ntohs ( e . len ) ; <S2SV_EndBug> trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_NONCE ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"<S2SV_blank>n<S2SV_blank>len=%u\" <S2SV_ModEnd> , ntohs ( <S2SV_ModStart> ; if ( ntohs ( e . len ) > 4 ) { if ( <S2SV_ModEnd> ndo -> ndo_vflag <S2SV_ModStart> ndo -> ndo_vflag > 2 <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> else if ( <S2SV_ModEnd> ndo -> ndo_vflag <S2SV_ModStart> ndo -> ndo_vflag > 1 <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> * ) ( <S2SV_ModEnd> ext + 1 <S2SV_ModStart> trunc ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0546\n\n```\nCWE-000 static int check_options ( int argc , char * * argv , char * operation ) { int i = 0 ; int num_found = 0 ; char config_file [ FN_REFLEN ] ; char plugin_name [ FN_REFLEN ] ; const char * basedir_prefix = \"--basedir=\" ; int basedir_len = strlen ( basedir_prefix ) ; const char * datadir_prefix = \"--datadir=\" ; int datadir_len = strlen ( datadir_prefix ) ; const char * plugin_dir_prefix = \"--plugin_dir=\" ; int plugin_dir_len = strlen ( plugin_dir_prefix ) ; strcpy ( plugin_name , \"\" ) ; for ( i = 0 ; i < argc && num_found < 5 ; i ++ ) { if ( ! argv [ i ] ) { continue ; } if ( ( strcasecmp ( argv [ i ] , \"ENABLE\" ) == 0 ) || ( strcasecmp ( argv [ i ] , \"DISABLE\" ) == 0 ) ) { strcpy ( operation , argv [ i ] ) ; num_found ++ ; } else if ( ( strncasecmp ( argv [ i ] , basedir_prefix , basedir_len ) == 0 ) && ! opt_basedir ) { opt_basedir = my_strndup ( argv [ i ] + basedir_len , strlen ( argv [ i ] ) - basedir_len , MYF ( MY_FAE ) ) ; num_found ++ ; } else if ( ( strncasecmp ( argv [ i ] , datadir_prefix , datadir_len ) == 0 ) && ! opt_datadir ) { opt_datadir = my_strndup ( argv [ i ] + datadir_len , strlen ( argv [ i ] ) - datadir_len , MYF ( MY_FAE ) ) ; num_found ++ ; } else if ( ( strncasecmp ( argv [ i ] , plugin_dir_prefix , plugin_dir_len ) == 0 ) && ! opt_plugin_dir ) { opt_plugin_dir = my_strndup ( argv [ i ] + plugin_dir_len , strlen ( argv [ i ] ) - plugin_dir_len , MYF ( MY_FAE ) ) ; num_found ++ ; } else { <S2SV_StartBug> strcpy ( plugin_name , argv [ i ] ) ; <S2SV_EndBug> strcpy ( config_file , argv [ i ] ) ; strcat ( config_file , \".ini\" ) ; } } if ( ! opt_basedir ) { fprintf ( stderr , \"ERROR:<S2SV_blank>Missing<S2SV_blank>--basedir<S2SV_blank>option.\\\\n\" ) ; return 1 ; } if ( ! opt_datadir ) { fprintf ( stderr , \"ERROR:<S2SV_blank>Missing<S2SV_blank>--datadir<S2SV_blank>option.\\\\n\" ) ; return 1 ; } if ( ! opt_plugin_dir ) { fprintf ( stderr , \"ERROR:<S2SV_blank>Missing<S2SV_blank>--plugin_dir<S2SV_blank>option.\\\\n\" ) ; return 1 ; } else if ( strlen ( plugin_name ) > 0 ) { if ( load_plugin_data ( plugin_name , config_file ) ) { return 1 ; } if ( strcasecmp ( plugin_data . name , plugin_name ) != 0 ) { fprintf ( stderr , \"ERROR:<S2SV_blank>plugin<S2SV_blank>name<S2SV_blank>requested<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>config<S2SV_blank>\" \"file<S2SV_blank>data.\\\\n\" ) ; return 1 ; } } else { fprintf ( stderr , \"ERROR:<S2SV_blank>No<S2SV_blank>plugin<S2SV_blank>specified.\\\\n\" ) ; return 1 ; } if ( ( strlen ( operation ) == 0 ) ) { fprintf ( stderr , \"ERROR:<S2SV_blank>missing<S2SV_blank>operation.<S2SV_blank>Please<S2SV_blank>specify<S2SV_blank>either<S2SV_blank>\" \"\\'<plugin><S2SV_blank>ENABLE\\'<S2SV_blank>or<S2SV_blank>\\'<plugin><S2SV_blank>DISABLE\\'.\\\\n\" ) ; return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { if ( strlen ( argv [ i ] ) + 4 + 1 > FN_REFLEN ) { fprintf ( stderr , \"ERROR:<S2SV_blank>argument<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" ) ; return 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3570\n\n```\nCWE-310 void bn_sqr_comba4 ( BN_ULONG * r , const BN_ULONG * a ) { <S2SV_StartBug> BN_ULONG t1 , t2 ; <S2SV_EndBug> BN_ULONG c1 , c2 , c3 ; c1 = 0 ; c2 = 0 ; c3 = 0 ; sqr_add_c ( a , 0 , c1 , c2 , c3 ) ; r [ 0 ] = c1 ; c1 = 0 ; sqr_add_c2 ( a , 1 , 0 , c2 , c3 , c1 ) ; r [ 1 ] = c2 ; c2 = 0 ; sqr_add_c ( a , 1 , c3 , c1 , c2 ) ; sqr_add_c2 ( a , 2 , 0 , c3 , c1 , c2 ) ; r [ 2 ] = c3 ; c3 = 0 ; sqr_add_c2 ( a , 3 , 0 , c1 , c2 , c3 ) ; sqr_add_c2 ( a , 2 , 1 , c1 , c2 , c3 ) ; r [ 3 ] = c1 ; c1 = 0 ; sqr_add_c ( a , 2 , c2 , c3 , c1 ) ; sqr_add_c2 ( a , 3 , 1 , c2 , c3 , c1 ) ; r [ 4 ] = c2 ; c2 = 0 ; sqr_add_c2 ( a , 3 , 2 , c3 , c1 , c2 ) ; r [ 5 ] = c3 ; c3 = 0 ; sqr_add_c ( a , 3 , c1 , c2 , c3 ) ; r [ 6 ] = c1 ; r [ 7 ] = c2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { BN_ULONG <S2SV_ModEnd> c1 , c2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18200\n\n```\nCWE-20 <S2SV_StartBug> void f2fs_wait_discard_bios ( struct f2fs_sb_info * sbi ) <S2SV_EndBug> { __issue_discard_cmd ( sbi , false ) ; __drop_discard_cmd ( sbi ) ; <S2SV_StartBug> __wait_discard_cmd ( sbi , false ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> f2fs_sb_info * sbi , bool umount <S2SV_ModStart> ( sbi , ! umount <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010296\n\n```\nCWE-119 TEE_Result syscall_cryp_obj_populate ( unsigned long obj , struct utee_attribute * usr_attrs , unsigned long attr_count ) { TEE_Result res ; struct tee_ta_session * sess ; struct tee_obj * o ; const struct tee_cryp_obj_type_props * type_props ; TEE_Attribute * attrs = NULL ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_obj_get ( to_user_ta_ctx ( sess -> ctx ) , tee_svc_uref_to_vaddr ( obj ) , & o ) ; if ( res != TEE_SUCCESS ) return res ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_PERSISTENT ) != 0 ) return TEE_ERROR_BAD_PARAMETERS ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_INITIALIZED ) != 0 ) return TEE_ERROR_BAD_PARAMETERS ; type_props = tee_svc_find_type_props ( o -> info . objectType ) ; if ( ! type_props ) return TEE_ERROR_NOT_IMPLEMENTED ; <S2SV_StartBug> attrs = malloc ( sizeof ( TEE_Attribute ) * attr_count ) ; <S2SV_EndBug> if ( ! attrs ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( to_user_ta_ctx ( sess -> ctx ) , usr_attrs , attr_count , attrs ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_svc_cryp_check_attr ( ATTR_USAGE_POPULATE , type_props , attrs , attr_count ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_svc_cryp_obj_populate_type ( o , type_props , attrs , attr_count ) ; if ( res == TEE_SUCCESS ) o -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; out : free ( attrs ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return TEE_ERROR_NOT_IMPLEMENTED ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , attr_count , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0037\n\n```\nCWE-200 static int raptor_rss_parse_start ( raptor_parser * rdf_parser ) { raptor_uri * uri = rdf_parser -> base_uri ; raptor_rss_parser * rss_parser = ( raptor_rss_parser * ) rdf_parser -> context ; int n ; if ( ! uri ) return 1 ; for ( n = 0 ; n < RAPTOR_RSS_NAMESPACES_SIZE ; n ++ ) rss_parser -> nspaces_seen [ n ] = 'N' ; raptor_sax2_set_option ( rss_parser -> sax2 , RAPTOR_OPTION_NO_NET , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_NO_NET ) ) ; raptor_sax2_set_option ( rss_parser -> sax2 , RAPTOR_OPTION_NO_FILE , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_NO_FILE ) ) ; <S2SV_StartBug> if ( rdf_parser -> uri_filter ) <S2SV_EndBug> raptor_sax2_set_uri_filter ( rss_parser -> sax2 , rdf_parser -> uri_filter , rdf_parser -> uri_filter_user_data ) ; raptor_sax2_parse_start ( rss_parser -> sax2 , uri ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; raptor_sax2_set_option ( rss_parser -> sax2 , RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8630\n\n```\nCWE-000 kadm5_ret_t kadm5_create_principal_3 ( void * server_handle , kadm5_principal_ent_t entry , long mask , int n_ks_tuple , krb5_key_salt_tuple * ks_tuple , char * password ) { krb5_db_entry * kdb ; osa_princ_ent_rec adb ; kadm5_policy_ent_rec polent ; krb5_boolean have_polent = FALSE ; krb5_int32 now ; krb5_tl_data * tl_data_tail ; unsigned int ret ; kadm5_server_handle_t handle = server_handle ; krb5_keyblock * act_mkey ; krb5_kvno act_kvno ; int new_n_ks_tuple = 0 ; krb5_key_salt_tuple * new_ks_tuple = NULL ; CHECK_HANDLE ( server_handle ) ; krb5_clear_error_message ( handle -> context ) ; check_1_6_dummy ( entry , mask , n_ks_tuple , ks_tuple , & password ) ; <S2SV_StartBug> if ( ! ( mask & KADM5_PRINCIPAL ) || ( mask & KADM5_MOD_NAME ) || <S2SV_EndBug> ( mask & KADM5_MOD_TIME ) || ( mask & KADM5_LAST_PWD_CHANGE ) || ( mask & KADM5_MKVNO ) || ( mask & KADM5_AUX_ATTRIBUTES ) || ( mask & KADM5_LAST_SUCCESS ) || ( mask & KADM5_LAST_FAILED ) || ( mask & KADM5_FAIL_AUTH_COUNT ) ) return KADM5_BAD_MASK ; if ( ( mask & KADM5_KEY_DATA ) && entry -> n_key_data != 0 ) return KADM5_BAD_MASK ; <S2SV_StartBug> if ( ( mask & KADM5_POLICY ) && ( mask & KADM5_POLICY_CLR ) ) <S2SV_EndBug> return KADM5_BAD_MASK ; <S2SV_StartBug> if ( ( mask & ~ ALL_PRINC_MASK ) ) <S2SV_EndBug> <S2SV_StartBug> return KADM5_BAD_MASK ; <S2SV_EndBug> if ( entry == NULL ) return EINVAL ; ret = kdb_get_entry ( handle , entry -> principal , & kdb , & adb ) ; switch ( ret ) { case KADM5_UNK_PRINC : break ; case 0 : kdb_free_entry ( handle , kdb , & adb ) ; return KADM5_DUP ; default : return ret ; } kdb = krb5_db_alloc ( handle -> context , NULL , sizeof ( * kdb ) ) ; if ( kdb == NULL ) return ENOMEM ; memset ( kdb , 0 , sizeof ( * kdb ) ) ; memset ( & adb , 0 , sizeof ( osa_princ_ent_rec ) ) ; if ( ( mask & KADM5_POLICY ) ) { ret = get_policy ( handle , entry -> policy , & polent , & have_polent ) ; if ( ret ) goto cleanup ; } if ( password ) { ret = passwd_check ( handle , password , have_polent ? & polent : NULL , entry -> principal ) ; if ( ret ) goto cleanup ; } if ( ( ret = krb5_timeofday ( handle -> context , & now ) ) ) goto cleanup ; kdb -> magic = KRB5_KDB_MAGIC_NUMBER ; kdb -> len = KRB5_KDB_V1_BASE_LENGTH ; if ( ( mask & KADM5_ATTRIBUTES ) ) kdb -> attributes = entry -> attributes ; else kdb -> attributes = handle -> params . flags ; if ( ( mask & KADM5_MAX_LIFE ) ) kdb -> max_life = entry -> max_life ; else kdb -> max_life = handle -> params . max_life ; if ( mask & KADM5_MAX_RLIFE ) kdb -> max_renewable_life = entry -> max_renewable_life ; else kdb -> max_renewable_life = handle -> params . max_rlife ; if ( ( mask & KADM5_PRINC_EXPIRE_TIME ) ) kdb -> expiration = entry -> princ_expire_time ; else kdb -> expiration = handle -> params . expiration ; kdb -> pw_expiration = 0 ; if ( have_polent ) { if ( polent . pw_max_life ) kdb -> pw_expiration = now + polent . pw_max_life ; else kdb -> pw_expiration = 0 ; } if ( ( mask & KADM5_PW_EXPIRATION ) ) kdb -> pw_expiration = entry -> pw_expiration ; kdb -> last_success = 0 ; kdb -> last_failed = 0 ; kdb -> fail_auth_count = 0 ; if ( ( ret = kadm5_copy_principal ( handle -> context , entry -> principal , & ( kdb -> princ ) ) ) ) goto cleanup ; if ( ( ret = krb5_dbe_update_last_pwd_change ( handle -> context , kdb , now ) ) ) goto cleanup ; if ( mask & KADM5_TL_DATA ) { for ( tl_data_tail = entry -> tl_data ; tl_data_tail ; tl_data_tail = tl_data_tail -> tl_data_next ) { ret = krb5_dbe_update_tl_data ( handle -> context , kdb , tl_data_tail ) ; if ( ret ) goto cleanup ; } } ret = apply_keysalt_policy ( handle , entry -> policy , n_ks_tuple , ks_tuple , & new_n_ks_tuple , & new_ks_tuple ) ; if ( ret ) goto cleanup ; ret = kdb_get_active_mkey ( handle , & act_kvno , & act_mkey ) ; if ( ret ) goto cleanup ; if ( mask & KADM5_KEY_DATA ) { assert ( entry -> n_key_data == 0 ) ; } else if ( password ) { ret = krb5_dbe_cpw ( handle -> context , act_mkey , new_ks_tuple , new_n_ks_tuple , password , ( mask & KADM5_KVNO ) ? entry -> kvno : 1 , FALSE , kdb ) ; } else { ret = krb5_dbe_crk ( handle -> context , & master_keyblock , new_ks_tuple , new_n_ks_tuple , FALSE , kdb ) ; } if ( ret ) goto cleanup ; ret = krb5_dbe_update_mkvno ( handle -> context , kdb , act_kvno ) ; if ( ret ) goto cleanup ; ret = k5_kadm5_hook_create ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_PRECOMMIT , entry , mask , new_n_ks_tuple , new_ks_tuple , password ) ; if ( ret ) goto cleanup ; adb . admin_history_kvno = INITIAL_HIST_KVNO ; if ( mask & KADM5_POLICY ) { adb . aux_attributes = KADM5_POLICY ; adb . policy = entry -> policy ; } kdb -> mask = mask | KADM5_KEY_DATA | KADM5_PRINCIPAL ; ret = kdb_put_entry ( handle , kdb , & adb ) ; ( void ) k5_kadm5_hook_create ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_POSTCOMMIT , entry , mask , new_n_ks_tuple , new_ks_tuple , password ) ; cleanup : free ( new_ks_tuple ) ; krb5_db_free_principal ( handle -> context , kdb ) ; if ( have_polent ) ( void ) kadm5_free_policy_ent ( handle -> lhandle , & polent ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( entry == NULL ) return EINVAL ; if ( <S2SV_ModStart> KADM5_POLICY ) && entry -> policy == NULL <S2SV_ModEnd> ) return KADM5_BAD_MASK <S2SV_ModStart> ( mask & KADM5_POLICY ) && ( mask & KADM5_POLICY_CLR ) ) return KADM5_BAD_MASK ; if ( ( mask & <S2SV_ModStart> ) return KADM5_BAD_MASK <S2SV_ModEnd> ; ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15090\n\n```\nCWE-125 void qedi_dbg_err ( struct qedi_dbg_ctx * qedi , const char * func , u32 line , const char * fmt , ... ) { va_list va ; <S2SV_StartBug> struct va_format vaf ; <S2SV_EndBug> char nfunc [ 32 ] ; memset ( nfunc , 0 , sizeof ( nfunc ) ) ; memcpy ( nfunc , func , sizeof ( nfunc ) - 1 ) ; va_start ( va , fmt ) ; vaf . fmt = fmt ; vaf . va = & va ; if ( likely ( qedi ) && likely ( qedi -> pdev ) ) pr_err ( \"[%s]:[%s:%d]:%d:<S2SV_blank>%pV\" , dev_name ( & qedi -> pdev -> dev ) , <S2SV_StartBug> nfunc , line , qedi -> host_no , & vaf ) ; <S2SV_EndBug> else <S2SV_StartBug> pr_err ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , nfunc , line , & vaf ) ; <S2SV_EndBug> va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct va_format vaf <S2SV_ModEnd> ; va_start ( <S2SV_ModStart> dev ) , func <S2SV_ModEnd> , line , <S2SV_ModStart> ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , func <S2SV_ModEnd> , line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void read_tx_mode_probs ( struct tx_probs * tx_probs , vp9_reader * r ) { <S2SV_EndBug> int i , j ; for ( i = 0 ; i < TX_SIZE_CONTEXTS ; ++ i ) for ( j = 0 ; j < TX_SIZES - 3 ; ++ j ) vp9_diff_update_prob ( r , & tx_probs -> p8x8 [ i ] [ j ] ) ; for ( i = 0 ; i < TX_SIZE_CONTEXTS ; ++ i ) for ( j = 0 ; j < TX_SIZES - 2 ; ++ j ) vp9_diff_update_prob ( r , & tx_probs -> p16x16 [ i ] [ j ] ) ; for ( i = 0 ; i < TX_SIZE_CONTEXTS ; ++ i ) for ( j = 0 ; j < TX_SIZES - 1 ; ++ j ) vp9_diff_update_prob ( r , & tx_probs -> p32x32 [ i ] [ j ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tx_probs , vpx_reader <S2SV_ModEnd> * r )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void write_frame_size ( const VP9_COMMON * cm , <S2SV_StartBug> struct vp9_write_bit_buffer * wb ) { <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_literal ( wb , cm -> width - 1 , 16 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_literal ( wb , cm -> height - 1 , 16 ) ; <S2SV_EndBug> write_display_size ( cm , wb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cm , struct vpx_write_bit_buffer <S2SV_ModEnd> * wb ) <S2SV_ModStart> wb ) { vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> 16 ) ; vpx_wb_write_literal <S2SV_ModEnd> ( wb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9708\n\n```\nCWE-000 static int traceLogDirective ( MaState * state , cchar * key , cchar * value ) { HttpRoute * route ; char * format , * option , * ovalue , * tok , * path , * formatter ; ssize size ; int flags , backup , level ; route = state -> route ; size = MAXINT ; backup = 0 ; flags = 0 ; path = 0 ; format = ME_HTTP_LOG_FORMAT ; formatter = \"detail\" ; level = 0 ; if ( route -> trace -> flags & MPR_LOG_CMDLINE ) { mprLog ( \"info<S2SV_blank>appweb<S2SV_blank>config\" , 4 , \"Already<S2SV_blank>tracing.<S2SV_blank>Ignoring<S2SV_blank>TraceLog<S2SV_blank>directive\" ) ; return 0 ; } for ( option = maGetNextArg ( sclone ( value ) , & tok ) ; option ; option = maGetNextArg ( tok , & tok ) ) { if ( ! path ) { path = sclone ( option ) ; } else { <S2SV_StartBug> option = stok ( option , \"<S2SV_blank>=\\\\t,\" , & ovalue ) ; <S2SV_EndBug> ovalue = strim ( ovalue , \"\\\\\"\\'\" , MPR_TRIM_BOTH ) ; if ( smatch ( option , \"anew\" ) ) { flags |= MPR_LOG_ANEW ; } else if ( smatch ( option , \"backup\" ) ) { backup = atoi ( ovalue ) ; } else if ( smatch ( option , \"format\" ) ) { format = ovalue ; } else if ( smatch ( option , \"level\" ) ) { level = ( int ) stoi ( ovalue ) ; } else if ( smatch ( option , \"size\" ) ) { size = ( ssize ) getnum ( ovalue ) ; } else if ( smatch ( option , \"formatter\" ) ) { formatter = ovalue ; } else { mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"Unknown<S2SV_blank>TraceLog<S2SV_blank>option<S2SV_blank>%s\" , option ) ; } } } if ( size < HTTP_TRACE_MIN_LOG_SIZE ) { size = HTTP_TRACE_MIN_LOG_SIZE ; } if ( path == 0 ) { mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"Missing<S2SV_blank>TraceLog<S2SV_blank>filename\" ) ; return MPR_ERR_BAD_SYNTAX ; } if ( formatter ) { httpSetTraceFormatterName ( route -> trace , formatter ) ; } if ( ! smatch ( path , \"stdout\" ) && ! smatch ( path , \"stderr\" ) ) { path = httpMakePath ( route , state -> configDir , path ) ; } route -> trace = httpCreateTrace ( route -> trace ) ; if ( httpSetTraceLogFile ( route -> trace , path , size , backup , format , flags ) < 0 ) { return MPR_ERR_CANT_OPEN ; } httpSetTraceLevel ( level ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { option = ssplit <S2SV_ModEnd> ( option ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20750\n\n```\nCWE-787 char * rfbProcessFileTransferReadBuffer ( rfbClientPtr cl , uint32_t length ) { char * buffer = NULL ; int n = 0 ; FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN ( \"\" , cl , NULL ) ; <S2SV_StartBug> if ( length == SIZE_MAX ) { <S2SV_EndBug> rfbErr ( \"rfbProcessFileTransferReadBuffer:<S2SV_blank>too<S2SV_blank>big<S2SV_blank>file<S2SV_blank>transfer<S2SV_blank>length<S2SV_blank>requested:<S2SV_blank>%u\" , ( unsigned int ) length ) ; rfbCloseClient ( cl ) ; return NULL ; } if ( length > 0 ) { buffer = malloc ( ( size_t ) length + 1 ) ; if ( buffer != NULL ) { if ( ( n = rfbReadExact ( cl , ( char * ) buffer , length ) ) <= 0 ) { if ( n != 0 ) rfbLogPerror ( \"rfbProcessFileTransferReadBuffer:<S2SV_blank>read\" ) ; rfbCloseClient ( cl ) ; if ( buffer != NULL ) free ( buffer ) ; return NULL ; } buffer [ length ] = 0 ; } } return buffer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length == SIZE_MAX || length > INT_MAX\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13135\n\n```\nCWE-908 static Image * ReadCUTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowCUTReaderException ( severity , tag ) { if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( severity , tag ) ; } <S2SV_EndBug> Image * image , * palette ; ImageInfo * clone_info ; MagickBooleanType status ; MagickOffsetType offset ; size_t EncodedByte ; unsigned char RunCount , RunValue , RunCountMasked ; CUTHeader Header ; CUTPalHeader PalHeader ; ssize_t depth ; ssize_t i , j ; ssize_t ldblk ; unsigned char * BImgBuff = NULL , * ptrB ; register Quantum * q ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } palette = NULL ; clone_info = NULL ; Header . Width = ReadBlobLSBShort ( image ) ; Header . Height = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . Width == 0 || Header . Height == 0 || Header . Reserved != 0 ) CUT_KO : ThrowCUTReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; EncodedByte = ReadBlobLSBShort ( image ) ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; ldblk = 0 ; while ( ( int ) RunCountMasked != 0 ) { i = 1 ; if ( ( int ) RunCount < 0x80 ) i = ( ssize_t ) RunCountMasked ; offset = SeekBlob ( image , TellBlob ( image ) + i , SEEK_SET ) ; if ( offset < 0 ) ThrowCUTReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; EncodedByte -= i + 1 ; ldblk += ( ssize_t ) RunCountMasked ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; RunCountMasked = RunCount & 0x7F ; } if ( EncodedByte != 1 ) goto CUT_KO ; i = 0 ; if ( ldblk == ( int ) Header . Width ) i = 8 ; if ( 2 * ldblk == ( int ) Header . Width ) i = 4 ; if ( 8 * ldblk == ( int ) Header . Width ) i = 1 ; if ( i == 0 ) goto CUT_KO ; depth = i ; image -> columns = Header . Width ; image -> rows = Header . Height ; image -> depth = 8 ; image -> colors = ( size_t ) ( GetQuantumRange ( 1UL * i ) + 1 ) ; if ( image_info -> ping != MagickFalse ) goto Finish ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( clone_info = CloneImageInfo ( image_info ) ) == NULL ) goto NoPalette ; i = ( ssize_t ) strlen ( clone_info -> filename ) ; j = i ; while ( -- i > 0 ) { if ( clone_info -> filename [ i ] == '.' ) { break ; } if ( clone_info -> filename [ i ] == '/' || clone_info -> filename [ i ] == '\\\\\\\\' || clone_info -> filename [ i ] == ':' ) { i = j ; break ; } } ( void ) CopyMagickString ( clone_info -> filename + i , \".PAL\" , ( size_t ) ( MagickPathExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { ( void ) CopyMagickString ( clone_info -> filename + i , \".pal\" , ( size_t ) ( MagickPathExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info -> filename [ i ] = '\\\\0' ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info = DestroyImageInfo ( clone_info ) ; clone_info = NULL ; goto NoPalette ; } } } if ( ( palette = AcquireImage ( clone_info , exception ) ) == NULL ) goto NoPalette ; status = OpenBlob ( clone_info , palette , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { ErasePalette : palette = DestroyImage ( palette ) ; palette = NULL ; goto NoPalette ; } if ( palette != NULL ) { ( void ) ReadBlob ( palette , 2 , ( unsigned char * ) PalHeader . FileId ) ; if ( strncmp ( PalHeader . FileId , \"AH\" , 2 ) != 0 ) goto ErasePalette ; PalHeader . Version = ReadBlobLSBShort ( palette ) ; PalHeader . Size = ReadBlobLSBShort ( palette ) ; PalHeader . FileType = ( char ) ReadBlobByte ( palette ) ; PalHeader . SubType = ( char ) ReadBlobByte ( palette ) ; PalHeader . BoardID = ReadBlobLSBShort ( palette ) ; PalHeader . GraphicsMode = ReadBlobLSBShort ( palette ) ; PalHeader . MaxIndex = ReadBlobLSBShort ( palette ) ; PalHeader . MaxRed = ReadBlobLSBShort ( palette ) ; PalHeader . MaxGreen = ReadBlobLSBShort ( palette ) ; PalHeader . MaxBlue = ReadBlobLSBShort ( palette ) ; ( void ) ReadBlob ( palette , 20 , ( unsigned char * ) PalHeader . PaletteId ) ; if ( EOFBlob ( image ) ) ThrowCUTReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; if ( PalHeader . MaxIndex < 1 ) goto ErasePalette ; image -> colors = PalHeader . MaxIndex + 1 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) goto NoMemory ; if ( PalHeader . MaxRed == 0 ) PalHeader . MaxRed = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxGreen == 0 ) PalHeader . MaxGreen = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxBlue == 0 ) PalHeader . MaxBlue = ( unsigned int ) QuantumRange ; for ( i = 0 ; i <= ( int ) PalHeader . MaxIndex ; i ++ ) { j = ( ssize_t ) TellBlob ( palette ) ; if ( ( j % 512 ) > 512 - 6 ) { j = ( ( j / 512 ) + 1 ) * 512 ; offset = SeekBlob ( palette , j , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } image -> colormap [ i ] . red = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxRed ) { image -> colormap [ i ] . red = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . red * QuantumRange + ( PalHeader . MaxRed >> 1 ) ) / PalHeader . MaxRed ) ; } image -> colormap [ i ] . green = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxGreen ) { image -> colormap [ i ] . green = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . green * QuantumRange + ( PalHeader . MaxGreen >> 1 ) ) / PalHeader . MaxGreen ) ; } image -> colormap [ i ] . blue = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxBlue ) { image -> colormap [ i ] . blue = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . blue * QuantumRange + ( PalHeader . MaxBlue >> 1 ) ) / PalHeader . MaxBlue ) ; } } if ( EOFBlob ( image ) ) ThrowCUTReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } NoPalette : if ( palette == NULL ) { image -> colors = 256 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) { NoMemory : ThrowCUTReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) i ) ; } } BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == NULL ) goto NoMemory ; <S2SV_StartBug> offset = SeekBlob ( image , 6 , SEEK_SET ) ; <S2SV_EndBug> if ( offset < 0 ) { if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } for ( i = 0 ; i < ( int ) Header . Height ; i ++ ) { EncodedByte = ReadBlobLSBShort ( image ) ; ptrB = BImgBuff ; j = ldblk ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; while ( ( int ) RunCountMasked != 0 ) { if ( ( ssize_t ) RunCountMasked > j ) { RunCountMasked = ( unsigned char ) j ; if ( j == 0 ) { break ; } } if ( ( int ) RunCount > 0x80 ) { RunValue = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) memset ( ptrB , ( int ) RunValue , ( size_t ) RunCountMasked ) ; } else { ( void ) ReadBlob ( image , ( size_t ) RunCountMasked , ptrB ) ; } ptrB += ( int ) RunCountMasked ; j -= ( int ) RunCountMasked ; if ( EOFBlob ( image ) != MagickFalse ) goto Finish ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; } InsertRow ( image , depth , BImgBuff , i , exception ) ; } ( void ) SyncImage ( image , exception ) ; if ( palette == NULL ) { if ( ( image -> storage_class == PseudoClass ) && ( SetImageGray ( image , exception ) != MagickFalse ) ) { if ( GetCutColors ( image , exception ) == 2 ) { for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { register Quantum sample ; sample = ScaleCharToQuantum ( ( unsigned char ) i ) ; if ( image -> colormap [ i ] . red != sample ) goto Finish ; if ( image -> colormap [ i ] . green != sample ) goto Finish ; if ( image -> colormap [ i ] . blue != sample ) goto Finish ; } image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { q = QueueAuthenticPixels ( image , 0 , i , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) { if ( GetPixelRed ( image , q ) == ScaleCharToQuantum ( 1 ) ) { SetPixelRed ( image , QuantumRange , q ) ; SetPixelGreen ( image , QuantumRange , q ) ; SetPixelBlue ( image , QuantumRange , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) goto Finish ; } } } } Finish : if ( BImgBuff != NULL ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , tag ) \\\\\\n{ <S2SV_ModEnd> if ( palette <S2SV_ModStart> tag ) ; \\\\\\n} <S2SV_ModEnd> Image * image <S2SV_ModStart> goto NoMemory ; ( void ) memset ( BImgBuff , 0 , ( size_t ) ldblk * sizeof ( * BImgBuff ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1065\n\n```\nCWE-476 unsigned int arpt_do_table ( struct sk_buff * skb , const struct nf_hook_state * state , struct xt_table * table ) { unsigned int hook = state -> hook ; static const char nulldevname [ IFNAMSIZ ] __attribute__ ( ( aligned ( sizeof ( long ) ) ) ) ; unsigned int verdict = NF_DROP ; const struct arphdr * arp ; struct arpt_entry * e , * * jumpstack ; const char * indev , * outdev ; const void * table_base ; unsigned int cpu , stackidx = 0 ; const struct xt_table_info * private ; struct xt_action_param acpar ; unsigned int addend ; if ( ! pskb_may_pull ( skb , arp_hdr_len ( skb -> dev ) ) ) return NF_DROP ; indev = state -> in ? state -> in -> name : nulldevname ; outdev = state -> out ? state -> out -> name : nulldevname ; local_bh_disable ( ) ; addend = xt_write_recseq_begin ( ) ; private = READ_ONCE ( table -> private ) ; cpu = smp_processor_id ( ) ; table_base = private -> entries ; jumpstack = ( struct arpt_entry * * ) private -> jumpstack [ cpu ] ; e = get_entry ( table_base , private -> hook_entry [ hook ] ) ; acpar . state = state ; acpar . hotdrop = false ; arp = arp_hdr ( skb ) ; do { const struct xt_entry_target * t ; struct xt_counters * counter ; if ( ! arp_packet_match ( arp , skb -> dev , indev , outdev , & e -> arp ) ) { e = arpt_next_entry ( e ) ; continue ; } counter = xt_get_this_cpu_counter ( & e -> counters ) ; ADD_COUNTER ( * counter , arp_hdr_len ( skb -> dev ) , 1 ) ; t = arpt_get_target_c ( e ) ; if ( ! t -> u . kernel . target -> target ) { int v ; v = ( ( struct xt_standard_target * ) t ) -> verdict ; if ( v < 0 ) { if ( v != XT_RETURN ) { verdict = ( unsigned int ) ( - v ) - 1 ; break ; } if ( stackidx == 0 ) { e = get_entry ( table_base , private -> underflow [ hook ] ) ; } else { e = jumpstack [ -- stackidx ] ; e = arpt_next_entry ( e ) ; } continue ; } if ( table_base + v != arpt_next_entry ( e ) ) { <S2SV_StartBug> jumpstack [ stackidx ++ ] = e ; <S2SV_EndBug> } e = get_entry ( table_base , v ) ; continue ; } acpar . target = t -> u . kernel . target ; acpar . targinfo = t -> data ; verdict = t -> u . kernel . target -> target ( skb , & acpar ) ; if ( verdict == XT_CONTINUE ) { arp = arp_hdr ( skb ) ; e = arpt_next_entry ( e ) ; } else { break ; } } while ( ! acpar . hotdrop ) ; xt_write_recseq_end ( addend ) ; local_bh_enable ( ) ; if ( acpar . hotdrop ) return NF_DROP ; else return verdict ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( unlikely ( stackidx >= private -> stacksize ) ) { verdict = NF_DROP ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-0011\n\n```\nCWE-264 void test_js ( void ) { GString * result = g_string_new ( \"\" ) ; parse_cmd_line ( \"js<S2SV_blank>(\\'x\\'<S2SV_blank>+<S2SV_blank>345).toUpperCase()\" , result ) ; g_assert_cmpstr ( \"X345\" , == , result -> str ) ; <S2SV_StartBug> uzbl . net . useragent = \"Test<S2SV_blank>useragent\" ; <S2SV_EndBug> parse_cmd_line ( \"js<S2SV_blank>Uzbl.run(\\'print<S2SV_blank>@useragent\\').toUpperCase();\" , result ) ; g_assert_cmpstr ( \"TEST<S2SV_blank>USERAGENT\" , == , result -> str ) ; g_string_free ( result , TRUE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> str ) ; <S2SV_ModEnd> g_string_free ( result\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9588\n\n```\nCWE-388 static void vmx_complete_atomic_exit ( struct vcpu_vmx * vmx ) { u32 exit_intr_info ; if ( ! ( vmx -> exit_reason == EXIT_REASON_MCE_DURING_VMENTRY || vmx -> exit_reason == EXIT_REASON_EXCEPTION_NMI ) ) return ; vmx -> exit_intr_info = vmcs_read32 ( VM_EXIT_INTR_INFO ) ; exit_intr_info = vmx -> exit_intr_info ; if ( is_machine_check ( exit_intr_info ) ) kvm_machine_check ( ) ; <S2SV_StartBug> if ( ( exit_intr_info & INTR_INFO_INTR_TYPE_MASK ) == INTR_TYPE_NMI_INTR && <S2SV_EndBug> ( exit_intr_info & INTR_INFO_VALID_MASK ) ) { kvm_before_handle_nmi ( & vmx -> vcpu ) ; asm ( \"int<S2SV_blank>$2\" ) ; kvm_after_handle_nmi ( & vmx -> vcpu ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( is_nmi ( exit_intr_info <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6371\n\n```\nCWE-310 struct json_object * json_tokener_parse_ex ( struct json_tokener * tok , const char * str , int len ) { struct json_object * obj = NULL ; char c = '\\\\1' ; # ifdef HAVE_SETLOCALE char * oldlocale = NULL , * tmplocale ; tmplocale = setlocale ( LC_NUMERIC , NULL ) ; if ( tmplocale ) oldlocale = strdup ( tmplocale ) ; setlocale ( LC_NUMERIC , \"C\" ) ; # endif tok -> char_offset = 0 ; <S2SV_StartBug> tok -> err = json_tokener_success ; <S2SV_EndBug> while ( PEEK_CHAR ( c , tok ) ) { redo_char : switch ( state ) { case json_tokener_state_eatws : while ( isspace ( ( int ) c ) ) { if ( ( ! ADVANCE_CHAR ( str , tok ) ) || ( ! PEEK_CHAR ( c , tok ) ) ) goto out ; } if ( c == '/' && ! ( tok -> flags & JSON_TOKENER_STRICT ) ) { printbuf_reset ( tok -> pb ) ; printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; state = json_tokener_state_comment_start ; } else { state = saved_state ; goto redo_char ; } break ; case json_tokener_state_start : switch ( c ) { case '{' : state = json_tokener_state_eatws ; saved_state = json_tokener_state_object_field_start ; current = json_object_new_object ( ) ; break ; case '[' : state = json_tokener_state_eatws ; saved_state = json_tokener_state_array ; current = json_object_new_array ( ) ; break ; case 'I' : case 'i' : state = json_tokener_state_inf ; printbuf_reset ( tok -> pb ) ; tok -> st_pos = 0 ; goto redo_char ; case 'N' : case 'n' : state = json_tokener_state_null ; printbuf_reset ( tok -> pb ) ; tok -> st_pos = 0 ; goto redo_char ; case '\\\\'' : if ( tok -> flags & JSON_TOKENER_STRICT ) { tok -> err = json_tokener_error_parse_unexpected ; goto out ; } case \\'\"\\' : state = json_tokener_state_string ; printbuf_reset ( tok -> pb ) ; tok -> quote_char = c ; break ; case 'T' : case 't' : case 'F' : case 'f' : state = json_tokener_state_boolean ; printbuf_reset ( tok -> pb ) ; tok -> st_pos = 0 ; goto redo_char ; # if defined ( __GNUC__ ) case '0' ... '9' : # else case '0' : case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : # endif case '-' : state = json_tokener_state_number ; printbuf_reset ( tok -> pb ) ; tok -> is_double = 0 ; goto redo_char ; default : tok -> err = json_tokener_error_parse_unexpected ; goto out ; } break ; case json_tokener_state_finish : if ( tok -> depth == 0 ) goto out ; obj = json_object_get ( current ) ; json_tokener_reset_level ( tok , tok -> depth ) ; tok -> depth -- ; goto redo_char ; case json_tokener_state_inf : { int size ; int size_inf ; int is_negative = 0 ; printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; size = json_min ( tok -> st_pos + 1 , json_null_str_len ) ; size_inf = json_min ( tok -> st_pos + 1 , json_inf_str_len ) ; char * infbuf = tok -> pb -> buf ; if ( * infbuf == '-' ) { infbuf ++ ; is_negative = 1 ; } if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_inf_str , infbuf , size_inf ) == 0 ) || ( strncmp ( json_inf_str , infbuf , size_inf ) == 0 ) ) { if ( tok -> st_pos == json_inf_str_len ) { current = json_object_new_double ( is_negative ? - INFINITY : INFINITY ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else { tok -> err = json_tokener_error_parse_unexpected ; goto out ; } tok -> st_pos ++ ; } break ; case json_tokener_state_null : { int size ; int size_nan ; printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; size = json_min ( tok -> st_pos + 1 , json_null_str_len ) ; size_nan = json_min ( tok -> st_pos + 1 , json_nan_str_len ) ; if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_null_str , tok -> pb -> buf , size ) == 0 ) || ( strncmp ( json_null_str , tok -> pb -> buf , size ) == 0 ) ) { if ( tok -> st_pos == json_null_str_len ) { current = NULL ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_nan_str , tok -> pb -> buf , size_nan ) == 0 ) || ( strncmp ( json_nan_str , tok -> pb -> buf , size_nan ) == 0 ) ) { if ( tok -> st_pos == json_nan_str_len ) { current = json_object_new_double ( NAN ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else { tok -> err = json_tokener_error_parse_null ; goto out ; } tok -> st_pos ++ ; } break ; case json_tokener_state_comment_start : if ( c == '*' ) { state = json_tokener_state_comment ; } else if ( c == '/' ) { state = json_tokener_state_comment_eol ; } else { tok -> err = json_tokener_error_parse_comment ; goto out ; } printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; break ; case json_tokener_state_comment : { const char * case_start = str ; while ( c != '*' ) { if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; goto out ; } } printbuf_memappend_fast ( tok -> pb , case_start , 1 + str - case_start ) ; state = json_tokener_state_comment_end ; } break ; case json_tokener_state_comment_eol : { const char * case_start = str ; while ( c != '\\\\n' ) { if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; goto out ; } } printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; MC_DEBUG ( \"json_tokener_comment:<S2SV_blank>%s\\\\n\" , tok -> pb -> buf ) ; state = json_tokener_state_eatws ; } break ; case json_tokener_state_comment_end : printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; if ( c == '/' ) { MC_DEBUG ( \"json_tokener_comment:<S2SV_blank>%s\\\\n\" , tok -> pb -> buf ) ; state = json_tokener_state_eatws ; } else { state = json_tokener_state_comment ; } break ; case json_tokener_state_string : { const char * case_start = str ; while ( 1 ) { if ( c == tok -> quote_char ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; current = json_object_new_string_len ( tok -> pb -> buf , tok -> pb -> bpos ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; break ; } else if ( c == '\\\\\\\\' ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; saved_state = json_tokener_state_string ; state = json_tokener_state_string_escape ; break ; } if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; goto out ; } } } break ; case json_tokener_state_string_escape : switch ( c ) { case \\'\"\\' : case '\\\\\\\\' : case '/' : printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; state = saved_state ; break ; case 'b' : case 'n' : case 'r' : case 't' : case 'f' : if ( c == 'b' ) printbuf_memappend_fast ( tok -> pb , \"\\\\b\" , 1 ) ; else if ( c == 'n' ) printbuf_memappend_fast ( tok -> pb , \"\\\\n\" , 1 ) ; else if ( c == 'r' ) printbuf_memappend_fast ( tok -> pb , \"\\\\r\" , 1 ) ; else if ( c == 't' ) printbuf_memappend_fast ( tok -> pb , \"\\\\t\" , 1 ) ; else if ( c == 'f' ) printbuf_memappend_fast ( tok -> pb , \"\\\\f\" , 1 ) ; state = saved_state ; break ; case 'u' : tok -> ucs_char = 0 ; tok -> st_pos = 0 ; state = json_tokener_state_escape_unicode ; break ; default : tok -> err = json_tokener_error_parse_string ; goto out ; } break ; case json_tokener_state_escape_unicode : { unsigned int got_hi_surrogate = 0 ; while ( 1 ) { if ( strchr ( json_hex_chars , c ) ) { tok -> ucs_char += ( ( unsigned int ) hexdigit ( c ) << ( ( 3 - tok -> st_pos ++ ) * 4 ) ) ; if ( tok -> st_pos == 4 ) { unsigned char unescaped_utf [ 4 ] ; if ( got_hi_surrogate ) { if ( IS_LOW_SURROGATE ( tok -> ucs_char ) ) { tok -> ucs_char = DECODE_SURROGATE_PAIR ( got_hi_surrogate , tok -> ucs_char ) ; } else { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } got_hi_surrogate = 0 ; } if ( tok -> ucs_char < 0x80 ) { unescaped_utf [ 0 ] = tok -> ucs_char ; printbuf_memappend_fast ( tok -> pb , ( char * ) unescaped_utf , 1 ) ; } else if ( tok -> ucs_char < 0x800 ) { unescaped_utf [ 0 ] = 0xc0 | ( tok -> ucs_char >> 6 ) ; unescaped_utf [ 1 ] = 0x80 | ( tok -> ucs_char & 0x3f ) ; printbuf_memappend_fast ( tok -> pb , ( char * ) unescaped_utf , 2 ) ; } else if ( IS_HIGH_SURROGATE ( tok -> ucs_char ) ) { got_hi_surrogate = tok -> ucs_char ; if ( ( tok -> char_offset + 1 != len ) && ( tok -> char_offset + 2 != len ) && ( str [ 1 ] == '\\\\\\\\' ) && ( str [ 2 ] == 'u' ) ) { if ( ! ADVANCE_CHAR ( str , tok ) || ! ADVANCE_CHAR ( str , tok ) ) { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; goto out ; } tok -> ucs_char = 0 ; tok -> st_pos = 0 ; continue ; } else { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } } else if ( IS_LOW_SURROGATE ( tok -> ucs_char ) ) { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } else if ( tok -> ucs_char < 0x10000 ) { unescaped_utf [ 0 ] = 0xe0 | ( tok -> ucs_char >> 12 ) ; unescaped_utf [ 1 ] = 0x80 | ( ( tok -> ucs_char >> 6 ) & 0x3f ) ; unescaped_utf [ 2 ] = 0x80 | ( tok -> ucs_char & 0x3f ) ; printbuf_memappend_fast ( tok -> pb , ( char * ) unescaped_utf , 3 ) ; } else if ( tok -> ucs_char < 0x110000 ) { unescaped_utf [ 0 ] = 0xf0 | ( ( tok -> ucs_char >> 18 ) & 0x07 ) ; unescaped_utf [ 1 ] = 0x80 | ( ( tok -> ucs_char >> 12 ) & 0x3f ) ; unescaped_utf [ 2 ] = 0x80 | ( ( tok -> ucs_char >> 6 ) & 0x3f ) ; unescaped_utf [ 3 ] = 0x80 | ( tok -> ucs_char & 0x3f ) ; printbuf_memappend_fast ( tok -> pb , ( char * ) unescaped_utf , 4 ) ; } else { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } state = saved_state ; break ; } } else { tok -> err = json_tokener_error_parse_string ; goto out ; } if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { if ( got_hi_surrogate ) printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; goto out ; } } } break ; case json_tokener_state_boolean : { int size1 , size2 ; printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; size1 = json_min ( tok -> st_pos + 1 , json_true_str_len ) ; size2 = json_min ( tok -> st_pos + 1 , json_false_str_len ) ; if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_true_str , tok -> pb -> buf , size1 ) == 0 ) || ( strncmp ( json_true_str , tok -> pb -> buf , size1 ) == 0 ) ) { if ( tok -> st_pos == json_true_str_len ) { current = json_object_new_boolean ( 1 ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_false_str , tok -> pb -> buf , size2 ) == 0 ) || ( strncmp ( json_false_str , tok -> pb -> buf , size2 ) == 0 ) ) { if ( tok -> st_pos == json_false_str_len ) { current = json_object_new_boolean ( 0 ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else { tok -> err = json_tokener_error_parse_boolean ; goto out ; } tok -> st_pos ++ ; } break ; case json_tokener_state_number : { const char * case_start = str ; int case_len = 0 ; while ( c && strchr ( json_number_chars , c ) ) { ++ case_len ; if ( c == '.' || c == 'e' || c == 'E' ) tok -> is_double = 1 ; if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , case_len ) ; goto out ; } } if ( case_len > 0 ) printbuf_memappend_fast ( tok -> pb , case_start , case_len ) ; if ( tok -> pb -> buf [ 0 ] == '-' && case_len == 1 && ( c == 'i' || c == 'I' ) ) { state = json_tokener_state_inf ; goto redo_char ; } } { int64_t num64 ; double numd ; if ( ! tok -> is_double && json_parse_int64 ( tok -> pb -> buf , & num64 ) == 0 ) { if ( num64 && tok -> pb -> buf [ 0 ] == '0' && ( tok -> flags & JSON_TOKENER_STRICT ) ) { tok -> err = json_tokener_error_parse_number ; goto out ; } current = json_object_new_int64 ( num64 ) ; } else if ( tok -> is_double && json_parse_double ( tok -> pb -> buf , & numd ) == 0 ) { current = json_object_new_double_s ( numd , tok -> pb -> buf ) ; } else { tok -> err = json_tokener_error_parse_number ; goto out ; } saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } break ; case json_tokener_state_array_after_sep : case json_tokener_state_array : if ( c == ']' ) { if ( state == json_tokener_state_array_after_sep && ( tok -> flags & JSON_TOKENER_STRICT ) ) { tok -> err = json_tokener_error_parse_unexpected ; goto out ; } saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; } else { if ( tok -> depth >= tok -> max_depth - 1 ) { tok -> err = json_tokener_error_depth ; goto out ; } state = json_tokener_state_array_add ; tok -> depth ++ ; json_tokener_reset_level ( tok , tok -> depth ) ; goto redo_char ; } break ; case json_tokener_state_array_add : json_object_array_add ( current , obj ) ; saved_state = json_tokener_state_array_sep ; state = json_tokener_state_eatws ; goto redo_char ; case json_tokener_state_array_sep : if ( c == ']' ) { saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; } else if ( c == ',' ) { saved_state = json_tokener_state_array_after_sep ; state = json_tokener_state_eatws ; } else { tok -> err = json_tokener_error_parse_array ; goto out ; } break ; case json_tokener_state_object_field_start : case json_tokener_state_object_field_start_after_sep : if ( c == '}' ) { if ( state == json_tokener_state_object_field_start_after_sep && ( tok -> flags & JSON_TOKENER_STRICT ) ) { tok -> err = json_tokener_error_parse_unexpected ; goto out ; } saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; } else if ( c == \\'\"\\' || c == '\\\\'' ) { tok -> quote_char = c ; printbuf_reset ( tok -> pb ) ; state = json_tokener_state_object_field ; } else { tok -> err = json_tokener_error_parse_object_key_name ; goto out ; } break ; case json_tokener_state_object_field : { const char * case_start = str ; while ( 1 ) { if ( c == tok -> quote_char ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; obj_field_name = strdup ( tok -> pb -> buf ) ; saved_state = json_tokener_state_object_field_end ; state = json_tokener_state_eatws ; break ; } else if ( c == '\\\\\\\\' ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; saved_state = json_tokener_state_object_field ; state = json_tokener_state_string_escape ; break ; } if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; goto out ; } } } break ; case json_tokener_state_object_field_end : if ( c == ':' ) { saved_state = json_tokener_state_object_value ; state = json_tokener_state_eatws ; } else { tok -> err = json_tokener_error_parse_object_key_sep ; goto out ; } break ; case json_tokener_state_object_value : if ( tok -> depth >= tok -> max_depth - 1 ) { tok -> err = json_tokener_error_depth ; goto out ; } state = json_tokener_state_object_value_add ; tok -> depth ++ ; json_tokener_reset_level ( tok , tok -> depth ) ; goto redo_char ; case json_tokener_state_object_value_add : json_object_object_add ( current , obj_field_name , obj ) ; free ( obj_field_name ) ; obj_field_name = NULL ; saved_state = json_tokener_state_object_sep ; state = json_tokener_state_eatws ; goto redo_char ; case json_tokener_state_object_sep : if ( c == '}' ) { saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; } else if ( c == ',' ) { saved_state = json_tokener_state_object_field_start_after_sep ; state = json_tokener_state_eatws ; } else { tok -> err = json_tokener_error_parse_object_value_sep ; goto out ; } break ; } if ( ! ADVANCE_CHAR ( str , tok ) ) goto out ; } out : if ( c && ( state == json_tokener_state_finish ) && ( tok -> depth == 0 ) && ( tok -> flags & JSON_TOKENER_STRICT ) ) { tok -> err = json_tokener_error_parse_unexpected ; } if ( ! c ) { if ( state != json_tokener_state_finish && saved_state != json_tokener_state_finish ) tok -> err = json_tokener_error_parse_eof ; } # ifdef HAVE_SETLOCALE setlocale ( LC_NUMERIC , oldlocale ) ; if ( oldlocale ) free ( oldlocale ) ; # endif if ( tok -> err == json_tokener_success ) { json_object * ret = json_object_get ( current ) ; int ii ; for ( ii = tok -> depth ; ii >= 0 ; ii -- ) json_tokener_reset_level ( tok , ii ) ; return ret ; } MC_DEBUG ( \"json_tokener_parse_ex:<S2SV_blank>error<S2SV_blank>%s<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%d\\\\n\" , json_tokener_errors [ tok -> err ] , tok -> char_offset ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = json_tokener_success ; if ( ( len < - 1 ) || ( len == - 1 && strlen ( str ) > INT32_MAX ) ) { tok -> err = json_tokener_error_size ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16323\n\n```\nCWE-200 static Image * ReadXBMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char buffer [ MagickPathExtent ] , name [ MagickPathExtent ] ; Image * image ; int c ; MagickBooleanType status ; register ssize_t i , x ; register Quantum * q ; register unsigned char * p ; short int hex_digits [ 256 ] ; ssize_t y ; unsigned char * data ; unsigned int bit , byte , bytes_per_line , height , length , padding , version , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } width = 0 ; height = 0 ; * name = '\\\\0' ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) if ( sscanf ( buffer , \"#define<S2SV_blank>%1024s<S2SV_blank>%u\" , name , & width ) == 2 ) if ( ( strlen ( name ) >= 6 ) && ( LocaleCompare ( name + strlen ( name ) - 6 , \"_width\" ) == 0 ) ) break ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) if ( sscanf ( buffer , \"#define<S2SV_blank>%1024s<S2SV_blank>%u\" , name , & height ) == 2 ) if ( ( strlen ( name ) >= 7 ) && ( LocaleCompare ( name + strlen ( name ) - 7 , \"_height\" ) == 0 ) ) break ; image -> columns = width ; image -> rows = height ; image -> depth = 8 ; image -> storage_class = PseudoClass ; image -> colors = 2 ; version = 11 ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) { if ( sscanf ( buffer , \"static<S2SV_blank>short<S2SV_blank>%1024s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 10 ; else if ( sscanf ( buffer , \"static<S2SV_blank>unsigned<S2SV_blank>char<S2SV_blank>%1024s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 11 ; else if ( sscanf ( buffer , \"static<S2SV_blank>char<S2SV_blank>%1024s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 11 ; else continue ; p = ( unsigned char * ) strrchr ( name , '_' ) ; if ( p == ( unsigned char * ) NULL ) p = ( unsigned char * ) name ; else p ++ ; if ( LocaleCompare ( \"bits[]\" , ( char * ) p ) == 0 ) break ; } if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) || ( EOFBlob ( image ) != MagickFalse ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; image -> colormap [ 0 ] . red = ( MagickRealType ) QuantumRange ; image -> colormap [ 0 ] . green = ( MagickRealType ) QuantumRange ; image -> colormap [ 0 ] . blue = ( MagickRealType ) QuantumRange ; image -> colormap [ 1 ] . red = 0.0 ; image -> colormap [ 1 ] . green = 0.0 ; image -> colormap [ 1 ] . blue = 0.0 ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; for ( i = 0 ; i < ( ssize_t ) ( sizeof ( hex_digits ) / sizeof ( * hex_digits ) ) ; i ++ ) hex_digits [ i ] = ( - 1 ) ; hex_digits [ ( int ) '0' ] = 0 ; hex_digits [ ( int ) '1' ] = 1 ; hex_digits [ ( int ) '2' ] = 2 ; hex_digits [ ( int ) '3' ] = 3 ; hex_digits [ ( int ) '4' ] = 4 ; hex_digits [ ( int ) '5' ] = 5 ; hex_digits [ ( int ) '6' ] = 6 ; hex_digits [ ( int ) '7' ] = 7 ; hex_digits [ ( int ) '8' ] = 8 ; hex_digits [ ( int ) '9' ] = 9 ; hex_digits [ ( int ) 'A' ] = 10 ; hex_digits [ ( int ) 'B' ] = 11 ; hex_digits [ ( int ) 'C' ] = 12 ; hex_digits [ ( int ) 'D' ] = 13 ; hex_digits [ ( int ) 'E' ] = 14 ; hex_digits [ ( int ) 'F' ] = 15 ; hex_digits [ ( int ) 'a' ] = 10 ; hex_digits [ ( int ) 'b' ] = 11 ; hex_digits [ ( int ) 'c' ] = 12 ; hex_digits [ ( int ) 'd' ] = 13 ; hex_digits [ ( int ) 'e' ] = 14 ; hex_digits [ ( int ) 'f' ] = 15 ; hex_digits [ ( int ) 'x' ] = 0 ; hex_digits [ ( int ) '<S2SV_blank>' ] = ( - 1 ) ; hex_digits [ ( int ) ',' ] = ( - 1 ) ; hex_digits [ ( int ) '}' ] = ( - 1 ) ; hex_digits [ ( int ) '\\\\n' ] = ( - 1 ) ; hex_digits [ ( int ) '\\\\t' ] = ( - 1 ) ; padding = 0 ; if ( ( ( image -> columns % 16 ) != 0 ) && ( ( image -> columns % 16 ) < 9 ) && ( version == 10 ) ) padding = 1 ; bytes_per_line = ( unsigned int ) ( image -> columns + 7 ) / 8 + padding ; length = ( unsigned int ) image -> rows ; data = ( unsigned char * ) AcquireQuantumMemory ( length , bytes_per_line * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; if ( version == 10 ) for ( i = 0 ; i < ( ssize_t ) ( bytes_per_line * image -> rows ) ; ( i += 2 ) ) { c = XBMInteger ( image , hex_digits ) ; if ( c < 0 ) <S2SV_StartBug> break ; <S2SV_EndBug> * p ++ = ( unsigned char ) c ; if ( ( padding == 0 ) || ( ( ( i + 2 ) % bytes_per_line ) != 0 ) ) * p ++ = ( unsigned char ) ( c >> 8 ) ; } else for ( i = 0 ; i < ( ssize_t ) ( bytes_per_line * image -> rows ) ; i ++ ) { c = XBMInteger ( image , hex_digits ) ; if ( c < 0 ) <S2SV_StartBug> break ; <S2SV_EndBug> * p ++ = ( unsigned char ) c ; } if ( EOFBlob ( image ) != MagickFalse ) { data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } p = data ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; bit = 0 ; byte = 0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( bit == 0 ) byte = ( unsigned int ) ( * p ++ ) ; SetPixelIndex ( image , ( Quantum ) ( ( byte & 0x01 ) != 0 ? 0x01 : 0x00 ) , q ) ; bit ++ ; byte >>= 1 ; if ( bit == 8 ) bit = 0 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ( void ) SyncImage ( image , exception ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) { data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } <S2SV_ModEnd> * p ++ <S2SV_ModStart> < 0 ) { data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } <S2SV_ModEnd> * p ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2521\n\n```\nCWE-189 static inline void x86_assign_hw_event ( struct perf_event * event , struct cpu_hw_events * cpuc , int i ) { struct hw_perf_event * hwc = & event -> hw ; hwc -> idx = cpuc -> assign [ i ] ; hwc -> last_cpu = smp_processor_id ( ) ; hwc -> last_tag = ++ cpuc -> tags [ i ] ; if ( hwc -> idx == X86_PMC_IDX_FIXED_BTS ) { hwc -> config_base = 0 ; hwc -> event_base = 0 ; } else if ( hwc -> idx >= X86_PMC_IDX_FIXED ) { hwc -> config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL ; <S2SV_StartBug> hwc -> event_base = MSR_ARCH_PERFMON_FIXED_CTR0 ; <S2SV_EndBug> } else { hwc -> config_base = x86_pmu_config_addr ( hwc -> idx ) ; hwc -> event_base = x86_pmu_event_addr ( hwc -> idx ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> event_base = MSR_ARCH_PERFMON_FIXED_CTR0 + ( hwc -> idx - X86_PMC_IDX_FIXED )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void get_cx_data ( struct stream_state * stream , struct VpxEncoderConfig * global , int * got_data ) { const vpx_codec_cx_pkt_t * pkt ; const struct vpx_codec_enc_cfg * cfg = & stream -> config . cfg ; vpx_codec_iter_t iter = NULL ; * got_data = 0 ; while ( ( pkt = vpx_codec_get_cx_data ( & stream -> encoder , & iter ) ) ) { static size_t fsize = 0 ; <S2SV_StartBug> static off_t ivf_header_pos = 0 ; <S2SV_EndBug> switch ( pkt -> kind ) { case VPX_CODEC_CX_FRAME_PKT : if ( ! ( pkt -> data . frame . flags & VPX_FRAME_IS_FRAGMENT ) ) { stream -> frames_out ++ ; } if ( ! global -> quiet ) fprintf ( stderr , \"<S2SV_blank>%6luF\" , ( unsigned long ) pkt -> data . frame . sz ) ; update_rate_histogram ( stream -> rate_hist , cfg , pkt ) ; # if CONFIG_WEBM_IO if ( stream -> config . write_webm ) { <S2SV_StartBug> if ( ! stream -> ebml . debug ) <S2SV_EndBug> stream -> hash = murmur ( pkt -> data . frame . buf , ( int ) pkt -> data . frame . sz , stream -> hash ) ; write_webm_block ( & stream -> ebml , cfg , pkt ) ; } # endif if ( ! stream -> config . write_webm ) { if ( pkt -> data . frame . partition_id <= 0 ) { ivf_header_pos = ftello ( stream -> file ) ; fsize = pkt -> data . frame . sz ; ivf_write_frame_header ( stream -> file , pkt -> data . frame . pts , fsize ) ; } else { fsize += pkt -> data . frame . sz ; if ( ! ( pkt -> data . frame . flags & VPX_FRAME_IS_FRAGMENT ) ) { <S2SV_StartBug> off_t currpos = ftello ( stream -> file ) ; <S2SV_EndBug> fseeko ( stream -> file , ivf_header_pos , SEEK_SET ) ; ivf_write_frame_size ( stream -> file , fsize ) ; fseeko ( stream -> file , currpos , SEEK_SET ) ; } } ( void ) fwrite ( pkt -> data . frame . buf , 1 , pkt -> data . frame . sz , stream -> file ) ; } stream -> nbytes += pkt -> data . raw . sz ; * got_data = 1 ; # if CONFIG_DECODERS if ( global -> test_decode != TEST_DECODE_OFF && ! stream -> mismatch_seen ) { vpx_codec_decode ( & stream -> decoder , pkt -> data . frame . buf , ( unsigned int ) pkt -> data . frame . sz , NULL , 0 ) ; if ( stream -> decoder . err ) { warn_or_exit_on_error ( & stream -> decoder , global -> test_decode == TEST_DECODE_FATAL , \"Failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>frame<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>stream<S2SV_blank>%d\" , stream -> frames_out + 1 , stream -> index ) ; stream -> mismatch_seen = stream -> frames_out + 1 ; } } # endif break ; case VPX_CODEC_STATS_PKT : stream -> frames_out ++ ; stats_write ( & stream -> stats , pkt -> data . twopass_stats . buf , pkt -> data . twopass_stats . sz ) ; stream -> nbytes += pkt -> data . raw . sz ; break ; <S2SV_StartBug> case VPX_CODEC_PSNR_PKT : <S2SV_EndBug> if ( global -> show_psnr ) { int i ; stream -> psnr_sse_total += pkt -> data . psnr . sse [ 0 ] ; stream -> psnr_samples_total += pkt -> data . psnr . samples [ 0 ] ; for ( i = 0 ; i < 4 ; i ++ ) { if ( ! global -> quiet ) fprintf ( stderr , \"%.3f<S2SV_blank>\" , pkt -> data . psnr . psnr [ i ] ) ; stream -> psnr_totals [ i ] += pkt -> data . psnr . psnr [ i ] ; } stream -> psnr_count ++ ; } break ; default : break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; static int64_t <S2SV_ModEnd> ivf_header_pos = 0 <S2SV_ModStart> write_webm ) { <S2SV_ModEnd> write_webm_block ( & <S2SV_ModStart> ) ) { const int64_t <S2SV_ModEnd> currpos = ftello <S2SV_ModStart> ; break ; # if CONFIG_FP_MB_STATS case VPX_CODEC_FPMB_STATS_PKT : stats_write ( & stream -> fpmb_stats , pkt -> data . firstpass_mb_stats . buf , pkt -> data . firstpass_mb_stats . sz ) ; stream -> nbytes += pkt -> data . raw . sz ; break ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19083\n\n```\nCWE-401 struct clock_source * dcn10_clock_source_create ( struct dc_context * ctx , struct dc_bios * bios , enum clock_source_id id , const struct dce110_clk_src_regs * regs , bool dp_clk_src ) { struct dce110_clk_src * clk_src = kzalloc ( sizeof ( struct dce110_clk_src ) , GFP_KERNEL ) ; if ( ! clk_src ) return NULL ; if ( dce112_clk_src_construct ( clk_src , ctx , bios , id , regs , & cs_shift , & cs_mask ) ) { clk_src -> base . dp_clk_src = dp_clk_src ; return & clk_src -> base ; } <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base ; } kfree ( clk_src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4653\n\n```\nCWE-000 int snd_ctl_replace ( struct snd_card * card , struct snd_kcontrol * kcontrol , bool add_on_replace ) { <S2SV_StartBug> struct snd_ctl_elem_id id ; <S2SV_EndBug> unsigned int idx ; struct snd_kcontrol * old ; int ret ; if ( ! kcontrol ) return - EINVAL ; if ( snd_BUG_ON ( ! card || ! kcontrol -> info ) ) { ret = - EINVAL ; goto error ; } id = kcontrol -> id ; down_write ( & card -> controls_rwsem ) ; old = snd_ctl_find_id ( card , & id ) ; if ( ! old ) { if ( add_on_replace ) goto add ; up_write ( & card -> controls_rwsem ) ; ret = - EINVAL ; goto error ; } ret = snd_ctl_remove ( card , old ) ; if ( ret < 0 ) { up_write ( & card -> controls_rwsem ) ; goto error ; } add : if ( snd_ctl_find_hole ( card , kcontrol -> count ) < 0 ) { up_write ( & card -> controls_rwsem ) ; ret = - ENOMEM ; goto error ; } list_add_tail ( & kcontrol -> list , & card -> controls ) ; card -> controls_count += kcontrol -> count ; kcontrol -> id . numid = card -> last_numid + 1 ; card -> last_numid += kcontrol -> count ; <S2SV_StartBug> up_write ( & card -> controls_rwsem ) ; <S2SV_EndBug> <S2SV_StartBug> for ( idx = 0 ; idx < kcontrol -> count ; idx ++ , id . index ++ , id . numid ++ ) <S2SV_EndBug> snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_ADD , & id ) ; return 0 ; error : snd_ctl_free_one ( kcontrol ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct snd_ctl_elem_id id ; unsigned int count <S2SV_ModStart> -> count ; count = kcontrol -> count ; <S2SV_ModStart> ; idx < <S2SV_ModEnd> count ; idx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15945\n\n```\nCWE-000 static StkId rethook ( lua_State * L , CallInfo * ci , StkId firstres , int nres ) { ptrdiff_t oldtop = savestack ( L , L -> top ) ; int delta = 0 ; if ( isLuacode ( ci ) ) { <S2SV_StartBug> Proto * p = clLvalue ( s2v ( ci -> func ) ) -> p ; <S2SV_EndBug> if ( p -> is_vararg ) delta = ci -> u . l . nextraargs + p -> numparams + 1 ; if ( L -> top < ci -> top ) L -> top = ci -> top ; } if ( L -> hookmask & LUA_MASKRET ) { int ftransfer ; ci -> func += delta ; ftransfer = cast ( unsigned short , firstres - ci -> func ) ; luaD_hook ( L , LUA_HOOKRET , - 1 , ftransfer , nres ) ; ci -> func -= delta ; } <S2SV_StartBug> if ( isLua ( ci -> previous ) ) <S2SV_EndBug> <S2SV_StartBug> L -> oldpc = ci -> previous -> u . l . savedpc ; <S2SV_EndBug> return restorestack ( L , oldtop ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * p = ci_func ( ci <S2SV_ModEnd> ) -> p <S2SV_ModStart> isLua ( ci = ci <S2SV_ModStart> -> oldpc = pcRel ( ci <S2SV_ModEnd> -> u . <S2SV_ModStart> l . savedpc , ci_func ( ci ) -> p )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15165\n\n```\nCWE-20 pcap_t * pcap_ng_check_header ( const uint8_t * magic , FILE * fp , u_int precision , char * errbuf , int * err ) { bpf_u_int32 magic_int ; size_t amt_read ; bpf_u_int32 total_length ; bpf_u_int32 byte_order_magic ; struct block_header * bhdrp ; struct section_header_block * shbp ; pcap_t * p ; int swapped = 0 ; struct pcap_ng_sf * ps ; int status ; struct block_cursor cursor ; struct interface_description_block * idbp ; * err = 0 ; memcpy ( & magic_int , magic , sizeof ( magic_int ) ) ; if ( magic_int != BT_SHB ) { return ( NULL ) ; } amt_read = fread ( & total_length , 1 , sizeof ( total_length ) , fp ) ; if ( amt_read < sizeof ( total_length ) ) { if ( ferror ( fp ) ) { pcap_fmt_errmsg_for_errno ( errbuf , PCAP_ERRBUF_SIZE , errno , \"error<S2SV_blank>reading<S2SV_blank>dump<S2SV_blank>file\" ) ; * err = 1 ; return ( NULL ) ; } return ( NULL ) ; } amt_read = fread ( & byte_order_magic , 1 , sizeof ( byte_order_magic ) , fp ) ; if ( amt_read < sizeof ( byte_order_magic ) ) { if ( ferror ( fp ) ) { pcap_fmt_errmsg_for_errno ( errbuf , PCAP_ERRBUF_SIZE , errno , \"error<S2SV_blank>reading<S2SV_blank>dump<S2SV_blank>file\" ) ; * err = 1 ; return ( NULL ) ; } return ( NULL ) ; } if ( byte_order_magic != BYTE_ORDER_MAGIC ) { byte_order_magic = SWAPLONG ( byte_order_magic ) ; if ( byte_order_magic != BYTE_ORDER_MAGIC ) { return ( NULL ) ; } swapped = 1 ; total_length = SWAPLONG ( total_length ) ; } <S2SV_StartBug> if ( total_length < sizeof ( * bhdrp ) + sizeof ( * shbp ) + sizeof ( struct block_trailer ) ) { <S2SV_EndBug> pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , <S2SV_StartBug> \"Section<S2SV_blank>Header<S2SV_blank>Block<S2SV_blank>in<S2SV_blank>pcapng<S2SV_blank>dump<S2SV_blank>file<S2SV_blank>has<S2SV_blank>a<S2SV_blank>length<S2SV_blank>of<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%\" PRIsize , <S2SV_EndBug> total_length , <S2SV_StartBug> sizeof ( * bhdrp ) + sizeof ( * shbp ) + sizeof ( struct block_trailer ) ) ; <S2SV_EndBug> * err = 1 ; return ( NULL ) ; } if ( total_length > INITIAL_MAX_BLOCKSIZE ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"pcapng<S2SV_blank>block<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>><S2SV_blank>maximum<S2SV_blank>%u\" , total_length , INITIAL_MAX_BLOCKSIZE ) ; * err = 1 ; return ( NULL ) ; } p = pcap_open_offline_common ( errbuf , sizeof ( struct pcap_ng_sf ) ) ; if ( p == NULL ) { * err = 1 ; return ( NULL ) ; } p -> swapped = swapped ; ps = p -> priv ; switch ( precision ) { case PCAP_TSTAMP_PRECISION_MICRO : ps -> user_tsresol = 1000000 ; break ; case PCAP_TSTAMP_PRECISION_NANO : ps -> user_tsresol = 1000000000 ; break ; default : pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"unknown<S2SV_blank>time<S2SV_blank>stamp<S2SV_blank>resolution<S2SV_blank>%u\" , precision ) ; free ( p ) ; * err = 1 ; return ( NULL ) ; } p -> opt . tstamp_precision = precision ; p -> bufsize = 2048 ; if ( p -> bufsize < total_length ) p -> bufsize = total_length ; p -> buffer = malloc ( p -> bufsize ) ; if ( p -> buffer == NULL ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"out<S2SV_blank>of<S2SV_blank>memory\" ) ; free ( p ) ; * err = 1 ; return ( NULL ) ; } ps -> max_blocksize = INITIAL_MAX_BLOCKSIZE ; bhdrp = ( struct block_header * ) p -> buffer ; shbp = ( struct section_header_block * ) ( ( u_char * ) p -> buffer + sizeof ( struct block_header ) ) ; bhdrp -> block_type = magic_int ; bhdrp -> total_length = total_length ; shbp -> byte_order_magic = byte_order_magic ; if ( read_bytes ( fp , ( u_char * ) p -> buffer + ( sizeof ( magic_int ) + sizeof ( total_length ) + sizeof ( byte_order_magic ) ) , total_length - ( sizeof ( magic_int ) + sizeof ( total_length ) + sizeof ( byte_order_magic ) ) , 1 , errbuf ) == - 1 ) goto fail ; if ( p -> swapped ) { shbp -> major_version = SWAPSHORT ( shbp -> major_version ) ; shbp -> minor_version = SWAPSHORT ( shbp -> minor_version ) ; } if ( ! ( shbp -> major_version == PCAP_NG_VERSION_MAJOR && shbp -> minor_version == PCAP_NG_VERSION_MINOR ) ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"unsupported<S2SV_blank>pcapng<S2SV_blank>savefile<S2SV_blank>version<S2SV_blank>%u.%u\" , shbp -> major_version , shbp -> minor_version ) ; goto fail ; } p -> version_major = shbp -> major_version ; p -> version_minor = shbp -> minor_version ; p -> opt . tstamp_precision = precision ; for ( ; ; ) { status = read_block ( fp , p , & cursor , errbuf ) ; if ( status == 0 ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"the<S2SV_blank>capture<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>Interface<S2SV_blank>Description<S2SV_blank>Blocks\" ) ; goto fail ; } if ( status == - 1 ) goto fail ; switch ( cursor . block_type ) { case BT_IDB : idbp = get_from_block_data ( & cursor , sizeof ( * idbp ) , errbuf ) ; if ( idbp == NULL ) goto fail ; if ( p -> swapped ) { idbp -> linktype = SWAPSHORT ( idbp -> linktype ) ; idbp -> snaplen = SWAPLONG ( idbp -> snaplen ) ; } if ( ! add_interface ( p , & cursor , errbuf ) ) goto fail ; goto done ; case BT_EPB : case BT_SPB : case BT_PB : pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"the<S2SV_blank>capture<S2SV_blank>file<S2SV_blank>has<S2SV_blank>a<S2SV_blank>packet<S2SV_blank>block<S2SV_blank>before<S2SV_blank>any<S2SV_blank>Interface<S2SV_blank>Description<S2SV_blank>Blocks\" ) ; goto fail ; default : break ; } } done : p -> tzoff = 0 ; p -> linktype = linktype_to_dlt ( idbp -> linktype ) ; p -> snapshot = pcap_adjust_snapshot ( p -> linktype , idbp -> snaplen ) ; p -> linktype_ext = 0 ; if ( MAX_BLOCKSIZE_FOR_SNAPLEN ( max_snaplen_for_dlt ( p -> linktype ) ) > ps -> max_blocksize ) ps -> max_blocksize = MAX_BLOCKSIZE_FOR_SNAPLEN ( max_snaplen_for_dlt ( p -> linktype ) ) ; p -> next_packet_op = pcap_ng_next_packet ; p -> cleanup_op = pcap_ng_cleanup ; return ( p ) ; fail : free ( ps -> ifaces ) ; free ( p -> buffer ) ; free ( p ) ; * err = 1 ; return ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct block_trailer ) || ( total_length > BT_SHB_INSANE_MAX ) <S2SV_ModStart> , PCAP_ERRBUF_SIZE , \"Section<S2SV_blank>Header<S2SV_blank>Block<S2SV_blank>in<S2SV_blank>pcapng<S2SV_blank>dump<S2SV_blank>file<S2SV_blank>has<S2SV_blank>invalid<S2SV_blank>length<S2SV_blank>%\" PRIsize \"<S2SV_blank><<S2SV_blank>_%lu_<S2SV_blank><<S2SV_blank>%lu<S2SV_blank>(BT_SHB_INSANE_MAX)\" <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> struct block_trailer ) , total_length , BT_SHB_INSANE_MAX <S2SV_ModEnd> ) ; *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int em_jcxz ( struct x86_emulate_ctxt * ctxt ) <S2SV_StartBug> { <S2SV_EndBug> if ( address_mask ( ctxt , reg_read ( ctxt , VCPU_REGS_RCX ) ) == 0 ) <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> <S2SV_StartBug> return X86EMUL_CONTINUE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt ) { int rc = X86EMUL_CONTINUE ; <S2SV_ModStart> == 0 ) rc = <S2SV_ModStart> ) ; return rc <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 static void do_local_notify ( xmlNode * notify_src , const char * client_id , gboolean sync_reply , gboolean from_peer ) { cib_client_t * client_obj = NULL ; int local_rc = pcmk_ok ; if ( client_id != NULL ) { client_obj = g_hash_table_lookup ( client_list , client_id ) ; } else { crm_trace ( \"No<S2SV_blank>client<S2SV_blank>to<S2SV_blank>sent<S2SV_blank>the<S2SV_blank>response<S2SV_blank>to.<S2SV_blank>F_CIB_CLIENTID<S2SV_blank>not<S2SV_blank>set.\" ) ; } if ( client_obj == NULL ) { local_rc = - ECONNRESET ; } else { int rid = 0 ; if ( sync_reply ) { <S2SV_StartBug> CRM_LOG_ASSERT ( client_obj -> request_id ) ; <S2SV_EndBug> rid = client_obj -> request_id ; client_obj -> request_id = 0 ; crm_trace ( \"Sending<S2SV_blank>response<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>%s\" , <S2SV_StartBug> rid , client_obj -> name , from_peer ? \"(originator<S2SV_blank>of<S2SV_blank>delegated<S2SV_blank>request)\" : \"\" ) ; <S2SV_EndBug> } else { crm_trace ( \"Sending<S2SV_blank>an<S2SV_blank>event<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>%s\" , client_obj -> name , from_peer ? \"(originator<S2SV_blank>of<S2SV_blank>delegated<S2SV_blank>request)\" : \"\" ) ; } if ( client_obj -> ipc && crm_ipcs_send ( client_obj -> ipc , rid , notify_src , ! sync_reply ) < 0 ) { local_rc = - ENOMSG ; # ifdef HAVE_GNUTLS_GNUTLS_H } else if ( client_obj -> session ) { crm_send_remote_msg ( client_obj -> session , notify_src , client_obj -> encrypted ) ; # endif } else if ( client_obj -> ipc == NULL ) { crm_err ( \"Unknown<S2SV_blank>transport<S2SV_blank>for<S2SV_blank>%s\" , client_obj -> name ) ; } } if ( local_rc != pcmk_ok && client_obj != NULL ) { crm_warn ( \"%sSync<S2SV_blank>reply<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>failed:<S2SV_blank>%s\" , sync_reply ? \"\" : \"A-\" , client_obj ? client_obj -> name : \"<unknown>\" , pcmk_strerror ( local_rc ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sync_reply ) { if ( client_obj -> ipc ) { <S2SV_ModStart> \"\" ) ; } else { crm_trace ( \"Sending<S2SV_blank>response<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>%s\" , client_obj -> name , from_peer ? \"(originator<S2SV_blank>of<S2SV_blank>delegated<S2SV_blank>request)\" : \"\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6308\n\n```\nCWE-190 void * <S2SV_StartBug> checked_xmalloc ( size_t size ) <S2SV_EndBug> { <S2SV_StartBug> alloc_limit_assert ( \"checked_xmalloc\" , size ) ; <S2SV_EndBug> <S2SV_StartBug> return xmalloc ( size ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> checked_xmalloc ( size_t num , size_t <S2SV_ModStart> size ) { size_t res ; if ( check_mul_overflow ( num , size , & res ) ) abort ( ) ; <S2SV_ModStart> ( \"checked_xmalloc\" , res <S2SV_ModEnd> ) ; return <S2SV_ModStart> return xmalloc ( num ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t ctrl_set_svc ( vpx_codec_alg_priv_t * ctx , int ctr_id , <S2SV_EndBug> va_list args ) { int data = va_arg ( args , int ) ; const vpx_codec_enc_cfg_t * cfg = & ctx -> cfg ; vp9_set_svc ( ctx -> cpi , data ) ; if ( data == 1 && <S2SV_StartBug> ( cfg -> rc_end_usage == VPX_CBR || <S2SV_EndBug> cfg -> g_pass == VPX_RC_FIRST_PASS || cfg -> g_pass == VPX_RC_LAST_PASS ) && cfg -> ss_number_layers > 1 && cfg -> ts_number_layers > 1 ) { return VPX_CODEC_INVALID_PARAM ; } return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> ( cfg -> <S2SV_ModEnd> g_pass == VPX_RC_FIRST_PASS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999011\n\n```\nCWE-119 static int parse_video_info ( AVIOContext * pb , AVStream * st ) { uint16_t size_asf ; uint32_t size_bmp ; unsigned int tag ; st -> codecpar -> width = avio_rl32 ( pb ) ; st -> codecpar -> height = avio_rl32 ( pb ) ; avio_skip ( pb , 1 ) ; size_asf = avio_rl16 ( pb ) ; tag = ff_get_bmp_header ( pb , st , & size_bmp ) ; st -> codecpar -> codec_tag = tag ; st -> codecpar -> codec_id = ff_codec_get_id ( ff_codec_bmp_tags , tag ) ; size_bmp = FFMAX ( size_asf , size_bmp ) ; <S2SV_StartBug> if ( size_bmp > BMP_HEADER_SIZE ) { <S2SV_EndBug> int ret ; st -> codecpar -> extradata_size = size_bmp - BMP_HEADER_SIZE ; if ( ! ( st -> codecpar -> extradata = av_malloc ( st -> codecpar -> extradata_size + AV_INPUT_BUFFER_PADDING_SIZE ) ) ) { st -> codecpar -> extradata_size = 0 ; return AVERROR ( ENOMEM ) ; } memset ( st -> codecpar -> extradata + st -> codecpar -> extradata_size , 0 , AV_INPUT_BUFFER_PADDING_SIZE ) ; if ( ( ret = avio_read ( pb , st -> codecpar -> extradata , st -> codecpar -> extradata_size ) ) < 0 ) return ret ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_bmp > BMP_HEADER_SIZE && size_bmp < INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18885\n\n```\nCWE-476 int btrfs_scrub_progress ( struct btrfs_fs_info * fs_info , u64 devid , struct btrfs_scrub_progress * progress ) { struct btrfs_device * dev ; struct scrub_ctx * sctx = NULL ; mutex_lock ( & fs_info -> fs_devices -> device_list_mutex ) ; <S2SV_StartBug> dev = btrfs_find_device ( fs_info -> fs_devices , devid , NULL , NULL ) ; <S2SV_EndBug> if ( dev ) sctx = dev -> scrub_ctx ; if ( sctx ) memcpy ( progress , & sctx -> stat , sizeof ( * progress ) ) ; mutex_unlock ( & fs_info -> fs_devices -> device_list_mutex ) ; return dev ? ( sctx ? 0 : - ENOTCONN ) : - ENODEV ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL , NULL , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 jp2_box_t * jp2_box_get ( jas_stream_t * in ) { jp2_box_t * box ; jp2_boxinfo_t * boxinfo ; jas_stream_t * tmpstream ; uint_fast32_t len ; uint_fast64_t extlen ; bool dataflag ; box = 0 ; tmpstream = 0 ; <S2SV_StartBug> if ( ! ( box = jas_malloc ( sizeof ( jp2_box_t ) ) ) ) { <S2SV_EndBug> goto error ; } box -> ops = & jp2_boxinfo_unk . ops ; if ( jp2_getuint32 ( in , & len ) || jp2_getuint32 ( in , & box -> type ) ) { goto error ; } boxinfo = jp2_boxinfolookup ( box -> type ) ; box -> info = boxinfo ; box -> len = len ; JAS_DBGLOG ( 10 , ( <S2SV_StartBug> \"preliminary<S2SV_blank>processing<S2SV_blank>of<S2SV_blank>JP2<S2SV_blank>box:<S2SV_blank>type=%c%s%c<S2SV_blank>(0x%08x);<S2SV_blank>length=%d\\\\n\" , <S2SV_EndBug> \\'\"\\' , boxinfo -> name , \\'\"\\' , box -> type , box -> len ) ) ; <S2SV_StartBug> if ( box -> len == 1 ) { <S2SV_EndBug> if ( jp2_getuint64 ( in , & extlen ) ) { goto error ; } if ( extlen > 0xffffffffUL ) { jas_eprintf ( \"warning:<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>large<S2SV_blank>64-bit<S2SV_blank>box<S2SV_blank>length\\\\n\" ) ; extlen = 0xffffffffUL ; } box -> len = extlen ; box -> datalen = extlen - JP2_BOX_HDRLEN ( true ) ; } else { box -> datalen = box -> len - JP2_BOX_HDRLEN ( false ) ; } if ( box -> len != 0 && box -> len < 8 ) { goto error ; } dataflag = ! ( box -> info -> flags & ( JP2_BOX_SUPER | JP2_BOX_NODATA ) ) ; if ( dataflag ) { if ( ! ( tmpstream = jas_stream_memopen ( 0 , 0 ) ) ) { goto error ; } if ( jas_stream_copy ( tmpstream , in , box -> datalen ) ) { jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; goto error ; } jas_stream_rewind ( tmpstream ) ; box -> ops = & boxinfo -> ops ; if ( box -> ops -> getdata ) { if ( ( * box -> ops -> getdata ) ( box , tmpstream ) ) { jas_eprintf ( \"cannot<S2SV_blank>parse<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; goto error ; } } jas_stream_close ( tmpstream ) ; } if ( jas_getdbglevel ( ) >= 1 ) { jp2_box_dump ( box , stderr ) ; } return box ; error : if ( box ) { jp2_box_destroy ( box ) ; } if ( tmpstream ) { jas_stream_close ( tmpstream ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( box = jp2_box_create0 ( ) ) ) { goto error ; } <S2SV_ModEnd> if ( jp2_getuint32 <S2SV_ModStart> 10 , ( \"preliminary<S2SV_blank>processing<S2SV_blank>of<S2SV_blank>JP2<S2SV_blank>box:<S2SV_blank>\" \"type=%c%s%c<S2SV_blank>(0x%08x);<S2SV_blank>length=%\" PRIuFAST32 \"\\\\n\" <S2SV_ModEnd> , \\'\"\\' , <S2SV_ModStart> 1 ) { JAS_DBGLOG ( 10 , ( \"big<S2SV_blank>length\\\\n\" ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14064\n\n```\nCWE-119 static VALUE cState_array_nl_set ( VALUE self , VALUE array_nl ) { unsigned long len ; GET_STATE ( self ) ; Check_Type ( array_nl , T_STRING ) ; len = RSTRING_LEN ( array_nl ) ; if ( len == 0 ) { if ( state -> array_nl ) { ruby_xfree ( state -> array_nl ) ; state -> array_nl = NULL ; } } else { if ( state -> array_nl ) ruby_xfree ( state -> array_nl ) ; <S2SV_StartBug> state -> array_nl = strdup ( RSTRING_PTR ( array_nl ) ) ; <S2SV_EndBug> state -> array_nl_len = len ; } return Qnil ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> array_nl = fstrndup <S2SV_ModEnd> ( RSTRING_PTR ( <S2SV_ModStart> ( array_nl ) , len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-32399\n\n```\nCWE-362 int hci_req_sync ( struct hci_dev * hdev , int ( * req ) ( struct hci_request * req , unsigned long opt ) , unsigned long opt , u32 timeout , u8 * hci_status ) { int ret ; <S2SV_StartBug> if ( ! test_bit ( HCI_UP , & hdev -> flags ) ) <S2SV_EndBug> <S2SV_StartBug> return - ENETDOWN ; <S2SV_EndBug> hci_req_sync_lock ( hdev ) ; ret = __hci_req_sync ( hdev , req , opt , timeout , hci_status ) ; <S2SV_StartBug> hci_req_sync_unlock ( hdev ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int ret ; hci_req_sync_lock ( hdev ) ; if ( <S2SV_ModEnd> test_bit ( HCI_UP <S2SV_ModStart> flags ) ) <S2SV_ModEnd> ret = __hci_req_sync <S2SV_ModStart> hci_status ) ; else ret = - ENETDOWN ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7495\n\n```\nCWE-200 int ext4_map_blocks ( handle_t * handle , struct inode * inode , struct ext4_map_blocks * map , int flags ) { struct extent_status es ; int retval ; int ret = 0 ; # ifdef ES_AGGRESSIVE_TEST struct ext4_map_blocks orig_map ; memcpy ( & orig_map , map , sizeof ( * map ) ) ; # endif map -> m_flags = 0 ; ext_debug ( \"ext4_map_blocks():<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>flag<S2SV_blank>%d,<S2SV_blank>max_blocks<S2SV_blank>%u,\" \"logical<S2SV_blank>block<S2SV_blank>%lu\\\\n\" , inode -> i_ino , flags , map -> m_len , ( unsigned long ) map -> m_lblk ) ; if ( unlikely ( map -> m_len > INT_MAX ) ) map -> m_len = INT_MAX ; if ( unlikely ( map -> m_lblk >= EXT_MAX_BLOCKS ) ) return - EFSCORRUPTED ; if ( ext4_es_lookup_extent ( inode , map -> m_lblk , & es ) ) { if ( ext4_es_is_written ( & es ) || ext4_es_is_unwritten ( & es ) ) { map -> m_pblk = ext4_es_pblock ( & es ) + map -> m_lblk - es . es_lblk ; map -> m_flags |= ext4_es_is_written ( & es ) ? EXT4_MAP_MAPPED : EXT4_MAP_UNWRITTEN ; retval = es . es_len - ( map -> m_lblk - es . es_lblk ) ; if ( retval > map -> m_len ) retval = map -> m_len ; map -> m_len = retval ; } else if ( ext4_es_is_delayed ( & es ) || ext4_es_is_hole ( & es ) ) { map -> m_pblk = 0 ; retval = es . es_len - ( map -> m_lblk - es . es_lblk ) ; if ( retval > map -> m_len ) retval = map -> m_len ; map -> m_len = retval ; retval = 0 ; } else { BUG_ON ( 1 ) ; } # ifdef ES_AGGRESSIVE_TEST ext4_map_blocks_es_recheck ( handle , inode , map , & orig_map , flags ) ; # endif goto found ; } down_read ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) { retval = ext4_ext_map_blocks ( handle , inode , map , flags & EXT4_GET_BLOCKS_KEEP_SIZE ) ; } else { retval = ext4_ind_map_blocks ( handle , inode , map , flags & EXT4_GET_BLOCKS_KEEP_SIZE ) ; } if ( retval > 0 ) { unsigned int status ; if ( unlikely ( retval != map -> m_len ) ) { ext4_warning ( inode -> i_sb , \"ES<S2SV_blank>len<S2SV_blank>assertion<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>inode<S2SV_blank>\" \"%lu:<S2SV_blank>retval<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>map->m_len<S2SV_blank>%d\" , inode -> i_ino , retval , map -> m_len ) ; WARN_ON ( 1 ) ; } status = map -> m_flags & EXT4_MAP_UNWRITTEN ? EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN ; if ( ! ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) && ! ( status & EXTENT_STATUS_WRITTEN ) && ext4_find_delalloc_range ( inode , map -> m_lblk , map -> m_lblk + map -> m_len - 1 ) ) status |= EXTENT_STATUS_DELAYED ; ret = ext4_es_insert_extent ( inode , map -> m_lblk , map -> m_len , map -> m_pblk , status ) ; if ( ret < 0 ) retval = ret ; } up_read ( ( & EXT4_I ( inode ) -> i_data_sem ) ) ; found : if ( retval > 0 && map -> m_flags & EXT4_MAP_MAPPED ) { ret = check_block_validity ( inode , map ) ; if ( ret != 0 ) return ret ; } if ( ( flags & EXT4_GET_BLOCKS_CREATE ) == 0 ) return retval ; if ( retval > 0 && map -> m_flags & EXT4_MAP_MAPPED ) if ( ! ( flags & EXT4_GET_BLOCKS_CONVERT_UNWRITTEN ) ) return retval ; map -> m_flags &= ~ EXT4_MAP_FLAGS ; down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) { retval = ext4_ext_map_blocks ( handle , inode , map , flags ) ; } else { retval = ext4_ind_map_blocks ( handle , inode , map , flags ) ; if ( retval > 0 && map -> m_flags & EXT4_MAP_NEW ) { ext4_clear_inode_state ( inode , EXT4_STATE_EXT_MIGRATE ) ; } if ( ( retval > 0 ) && ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) ) ext4_da_update_reserve_space ( inode , retval , 1 ) ; } if ( retval > 0 ) { unsigned int status ; if ( unlikely ( retval != map -> m_len ) ) { ext4_warning ( inode -> i_sb , \"ES<S2SV_blank>len<S2SV_blank>assertion<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>inode<S2SV_blank>\" \"%lu:<S2SV_blank>retval<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>map->m_len<S2SV_blank>%d\" , inode -> i_ino , retval , map -> m_len ) ; WARN_ON ( 1 ) ; } if ( flags & EXT4_GET_BLOCKS_ZERO && map -> m_flags & EXT4_MAP_MAPPED && map -> m_flags & EXT4_MAP_NEW ) { ret = ext4_issue_zeroout ( inode , map -> m_lblk , map -> m_pblk , map -> m_len ) ; if ( ret ) { retval = ret ; goto out_sem ; } } if ( ( flags & EXT4_GET_BLOCKS_PRE_IO ) && ext4_es_lookup_extent ( inode , map -> m_lblk , & es ) ) { if ( ext4_es_is_written ( & es ) ) goto out_sem ; } status = map -> m_flags & EXT4_MAP_UNWRITTEN ? EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN ; if ( ! ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) && ! ( status & EXTENT_STATUS_WRITTEN ) && ext4_find_delalloc_range ( inode , map -> m_lblk , map -> m_lblk + map -> m_len - 1 ) ) status |= EXTENT_STATUS_DELAYED ; ret = ext4_es_insert_extent ( inode , map -> m_lblk , map -> m_len , map -> m_pblk , status ) ; if ( ret < 0 ) { retval = ret ; goto out_sem ; } } out_sem : up_write ( ( & EXT4_I ( inode ) -> i_data_sem ) ) ; if ( retval > 0 && map -> m_flags & EXT4_MAP_MAPPED ) { ret = check_block_validity ( inode , map ) ; if ( ret != 0 ) return ret ; <S2SV_StartBug> } <S2SV_EndBug> return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ret ; if ( map -> m_flags & EXT4_MAP_NEW && ! ( map -> m_flags & EXT4_MAP_UNWRITTEN ) && ! ( flags & EXT4_GET_BLOCKS_ZERO ) && ! IS_NOQUOTA ( inode ) && ext4_should_order_data ( inode ) ) { ret = ext4_jbd2_file_inode ( handle , inode ) ; if ( ret ) return ret ; } } return <S2SV_ModEnd> retval ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t image2yuvconfig ( const vpx_image_t * img , YV12_BUFFER_CONFIG * yv12 ) { <S2SV_StartBug> vpx_codec_err_t res = VPX_CODEC_OK ; <S2SV_EndBug> yv12 -> y_buffer = img -> planes [ VPX_PLANE_Y ] ; yv12 -> u_buffer = img -> planes [ VPX_PLANE_U ] ; yv12 -> v_buffer = img -> planes [ VPX_PLANE_V ] ; <S2SV_StartBug> yv12 -> y_crop_width = img -> d_w ; <S2SV_EndBug> yv12 -> y_crop_height = img -> d_h ; yv12 -> y_width = img -> d_w ; yv12 -> y_height = img -> d_h ; yv12 -> uv_width = yv12 -> y_width / 2 ; <S2SV_StartBug> yv12 -> uv_height = yv12 -> y_height / 2 ; <S2SV_EndBug> yv12 -> y_stride = img -> stride [ VPX_PLANE_Y ] ; yv12 -> uv_stride = img -> stride [ VPX_PLANE_U ] ; yv12 -> border = ( img -> stride [ VPX_PLANE_Y ] - img -> d_w ) / 2 ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> yv12 ) { const int y_w = img -> d_w ; const int y_h = img -> d_h ; const int uv_w = ( img -> d_w + 1 ) / 2 ; const int uv_h = ( img -> d_h + 1 ) / 2 ; <S2SV_ModStart> -> y_crop_width = y_w ; yv12 -> y_crop_height = y_h ; yv12 -> y_width = y_w ; yv12 -> y_height = y_h ; yv12 -> uv_crop_width = uv_w ; yv12 -> uv_crop_height = uv_h ; yv12 -> uv_width = uv_w ; yv12 -> uv_height = uv_h ; yv12 -> y_stride = img -> stride [ VPX_PLANE_Y ] ; yv12 -> uv_stride = img -> stride [ VPX_PLANE_U ] ; yv12 -> border = ( img -> stride [ VPX_PLANE_Y ] - <S2SV_ModStart> img -> d_w ) <S2SV_ModEnd> / 2 ; <S2SV_ModStart> / 2 ; <S2SV_ModEnd> return res ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6703\n\n```\nCWE-000 static int snd_compr_allocate_buffer ( struct snd_compr_stream * stream , struct snd_compr_params * params ) { unsigned int buffer_size ; <S2SV_StartBug> void * buffer ; <S2SV_EndBug> buffer_size = params -> buffer . fragment_size * params -> buffer . fragments ; if ( stream -> ops -> copy ) { buffer = NULL ; } else { buffer = kmalloc ( buffer_size , GFP_KERNEL ) ; if ( ! buffer ) return - ENOMEM ; } stream -> runtime -> fragment_size = params -> buffer . fragment_size ; stream -> runtime -> fragments = params -> buffer . fragments ; stream -> runtime -> buffer = buffer ; stream -> runtime -> buffer_size = buffer_size ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void * buffer ; if ( params -> buffer . fragment_size == 0 || params -> buffer . fragments > SIZE_MAX / params -> buffer . fragment_size ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9226\n\n```\nCWE-787 static int fetch_token_in_cc ( OnigToken * tok , UChar * * src , UChar * end , ScanEnv * env ) { int num ; OnigCodePoint c , c2 ; OnigSyntaxType * syn = env -> syntax ; OnigEncoding enc = env -> enc ; UChar * prev ; UChar * p = * src ; PFETCH_READY ; if ( PEND ) { tok -> type = TK_EOT ; return tok -> type ; } PFETCH ( c ) ; tok -> type = TK_CHAR ; tok -> base = 0 ; tok -> u . c = c ; tok -> escaped = 0 ; if ( c == ']' ) { tok -> type = TK_CC_CLOSE ; } else if ( c == '-' ) { tok -> type = TK_CC_RANGE ; } else if ( c == MC_ESC ( syn ) ) { if ( ! IS_SYNTAX_BV ( syn , ONIG_SYN_BACKSLASH_ESCAPE_IN_CC ) ) goto end ; if ( PEND ) return ONIGERR_END_PATTERN_AT_ESCAPE ; PFETCH ( c ) ; tok -> escaped = 1 ; tok -> u . c = c ; switch ( c ) { case 'w' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 0 ; break ; case 'W' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 1 ; break ; case 'd' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 0 ; break ; case 'D' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 1 ; break ; case 's' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 0 ; break ; case 'S' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 1 ; break ; case 'h' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 0 ; break ; case 'H' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 1 ; break ; case 'p' : case 'P' : if ( PEND ) break ; c2 = PPEEK ; if ( c2 == '{' && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY ) ) { PINC ; tok -> type = TK_CHAR_PROPERTY ; tok -> u . prop . not = ( c == 'P' ? 1 : 0 ) ; if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT ) ) { PFETCH ( c2 ) ; if ( c2 == '^' ) { tok -> u . prop . not = ( tok -> u . prop . not == 0 ? 1 : 0 ) ; } else PUNFETCH ; } } break ; case 'x' : if ( PEND ) break ; prev = p ; if ( PPEEK_IS ( '{' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_BRACE_HEX8 ) ) { PINC ; num = scan_unsigned_hexadecimal_number ( & p , end , 8 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE ; if ( ! PEND ) { c2 = PPEEK ; if ( ONIGENC_IS_CODE_XDIGIT ( enc , c2 ) ) return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE ; } if ( p > prev + enclen ( enc , prev ) && ! PEND && ( PPEEK_IS ( '}' ) ) ) { PINC ; tok -> type = TK_CODE_POINT ; tok -> base = 16 ; tok -> u . code = ( OnigCodePoint ) num ; } else { p = prev ; } } else if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_HEX2 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 2 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 16 ; tok -> u . c = num ; } break ; case 'u' : if ( PEND ) break ; prev = p ; if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_U_HEX4 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 4 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_CODE_POINT ; tok -> base = 16 ; tok -> u . code = ( OnigCodePoint ) num ; } break ; case '0' : case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_OCTAL3 ) ) { PUNFETCH ; prev = p ; num = scan_unsigned_octal_number ( & p , end , 3 , enc ) ; <S2SV_StartBug> if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; <S2SV_EndBug> if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 8 ; tok -> u . c = num ; } break ; default : PUNFETCH ; num = fetch_escaped_value ( & p , end , env , & c2 ) ; if ( num < 0 ) return num ; if ( tok -> u . c != c2 ) { tok -> u . code = c2 ; tok -> type = TK_CODE_POINT ; } break ; } } else if ( c == '[' ) { if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_POSIX_BRACKET ) && ( PPEEK_IS ( ':' ) ) ) { OnigCodePoint send [ ] = { ( OnigCodePoint ) ':' , ( OnigCodePoint ) ']' } ; tok -> backp = p ; PINC ; if ( str_exist_check_with_esc ( send , 2 , p , end , ( OnigCodePoint ) ']' , enc , syn ) ) { tok -> type = TK_POSIX_BRACKET_OPEN ; } else { PUNFETCH ; goto cc_in_cc ; } } else { cc_in_cc : if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_CCLASS_SET_OP ) ) { tok -> type = TK_CC_CC_OPEN ; } else { CC_ESC_WARN ( env , ( UChar * ) \"[\" ) ; } } } else if ( c == '&' ) { if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_CCLASS_SET_OP ) && ! PEND && ( PPEEK_IS ( '&' ) ) ) { PINC ; tok -> type = TK_CC_AND ; } } end : * src = p ; return tok -> type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> num < 0 || num >= 256\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14284\n\n```\nCWE-369 static void setup_format_params ( int track ) { int n ; int il ; int count ; int head_shift ; int track_shift ; struct fparm { unsigned char track , head , sect , size ; } * here = ( struct fparm * ) floppy_track_buffer ; raw_cmd = & default_raw_cmd ; raw_cmd -> track = track ; raw_cmd -> flags = ( FD_RAW_WRITE | FD_RAW_INTR | FD_RAW_SPIN | FD_RAW_NEED_DISK | FD_RAW_NEED_SEEK ) ; raw_cmd -> rate = _floppy -> rate & 0x43 ; raw_cmd -> cmd_count = NR_F ; COMMAND = FM_MODE ( _floppy , FD_FORMAT ) ; DR_SELECT = UNIT ( current_drive ) + PH_HEAD ( _floppy , format_req . head ) ; F_SIZECODE = FD_SIZECODE ( _floppy ) ; F_SECT_PER_TRACK = _floppy -> sect << 2 >> F_SIZECODE ; F_GAP = _floppy -> fmt_gap ; F_FILL = FD_FILL_BYTE ; raw_cmd -> kernel_data = floppy_track_buffer ; raw_cmd -> length = 4 * F_SECT_PER_TRACK ; <S2SV_StartBug> head_shift = ( F_SECT_PER_TRACK + 5 ) / 6 ; <S2SV_EndBug> track_shift = 2 * head_shift + 3 ; n = ( track_shift * format_req . track + head_shift * format_req . head ) % F_SECT_PER_TRACK ; il = 1 ; if ( _floppy -> fmt_gap < 0x22 ) il ++ ; for ( count = 0 ; count < F_SECT_PER_TRACK ; ++ count ) { here [ count ] . track = format_req . track ; here [ count ] . head = format_req . head ; here [ count ] . sect = 0 ; here [ count ] . size = F_SIZECODE ; } for ( count = 1 ; count <= F_SECT_PER_TRACK ; ++ count ) { here [ n ] . sect = count ; n = ( n + il ) % F_SECT_PER_TRACK ; if ( here [ n ] . sect ) { ++ n ; if ( n >= F_SECT_PER_TRACK ) { n -= F_SECT_PER_TRACK ; while ( here [ n ] . sect ) ++ n ; } } } if ( _floppy -> stretch & FD_SECTBASEMASK ) { for ( count = 0 ; count < F_SECT_PER_TRACK ; count ++ ) here [ count ] . sect += FD_SECTBASE ( _floppy ) - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * F_SECT_PER_TRACK ; if ( ! F_SECT_PER_TRACK ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10250\n\n```\nCWE-476 void jp2_box_dump ( jp2_box_t * box , FILE * out ) { jp2_boxinfo_t * boxinfo ; boxinfo = jp2_boxinfolookup ( box -> type ) ; assert ( boxinfo ) ; fprintf ( out , \"JP2<S2SV_blank>box:<S2SV_blank>\" ) ; fprintf ( out , \"type=%c%s%c<S2SV_blank>(0x%08\" PRIxFAST32 \");<S2SV_blank>length=%\" PRIuFAST32 \"\\\\n\" , \\'\"\\' , boxinfo -> name , \\'\"\\' , box -> type , box -> len ) ; if ( box -> ops -> dumpdata ) { ( * box -> ops -> dumpdata ) ( box , out ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20786\n\n```\nCWE-476 VTermState * vterm_obtain_state ( VTerm * vt ) { VTermState * state ; if ( vt -> state ) return vt -> state ; <S2SV_StartBug> state = vterm_state_new ( vt ) ; <S2SV_EndBug> vt -> state = state ; state -> combine_chars_size = 16 ; state -> combine_chars = vterm_allocator_malloc ( state -> vt , state -> combine_chars_size * sizeof ( state -> combine_chars [ 0 ] ) ) ; state -> tabstops = vterm_allocator_malloc ( state -> vt , ( state -> cols + 7 ) / 8 ) ; state -> lineinfo = vterm_allocator_malloc ( state -> vt , state -> rows * sizeof ( VTermLineInfo ) ) ; state -> encoding_utf8 . enc = vterm_lookup_encoding ( ENC_UTF8 , 'u' ) ; if ( * state -> encoding_utf8 . enc -> init != NULL ) ( * state -> encoding_utf8 . enc -> init ) ( state -> encoding_utf8 . enc , state -> encoding_utf8 . data ) ; vterm_parser_set_callbacks ( vt , & parser_callbacks , state ) ; return state ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( vt ) ; if ( state == NULL ) return NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13301\n\n```\nCWE-476 int ff_mpeg4_decode_picture_header ( Mpeg4DecContext * ctx , GetBitContext * gb ) { MpegEncContext * s = & ctx -> m ; unsigned startcode , v ; int ret ; int vol = 0 ; align_get_bits ( gb ) ; if ( ! s -> studio_profile && s -> avctx -> bits_per_raw_sample != 8 ) s -> avctx -> bits_per_raw_sample = 0 ; if ( s -> codec_tag == AV_RL32 ( \"WV1F\" ) && show_bits ( gb , 24 ) == 0x575630 ) { skip_bits ( gb , 24 ) ; if ( get_bits ( gb , 8 ) == 0xF0 ) goto end ; } startcode = 0xff ; for ( ; ; ) { if ( get_bits_count ( gb ) >= gb -> size_in_bits ) { if ( gb -> size_in_bits == 8 && ( ctx -> divx_version >= 0 || ctx -> xvid_build >= 0 ) || s -> codec_tag == AV_RL32 ( \"QMP4\" ) ) { av_log ( s -> avctx , AV_LOG_VERBOSE , \"frame<S2SV_blank>skip<S2SV_blank>%d\\\\n\" , gb -> size_in_bits ) ; return FRAME_SKIPPED ; } else return AVERROR_INVALIDDATA ; } v = get_bits ( gb , 8 ) ; startcode = ( ( startcode << 8 ) | v ) & 0xffffffff ; if ( ( startcode & 0xFFFFFF00 ) != 0x100 ) continue ; if ( s -> avctx -> debug & FF_DEBUG_STARTCODE ) { av_log ( s -> avctx , AV_LOG_DEBUG , \"startcode:<S2SV_blank>%3X<S2SV_blank>\" , startcode ) ; if ( startcode <= 0x11F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode <= 0x12F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Layer<S2SV_blank>Start\" ) ; else if ( startcode <= 0x13F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode <= 0x15F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FGS<S2SV_blank>bp<S2SV_blank>start\" ) ; else if ( startcode <= 0x1AF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode == 0x1B0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>End\" ) ; else if ( startcode == 0x1B2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"User<S2SV_blank>Data\" ) ; else if ( startcode == 0x1B3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Group<S2SV_blank>of<S2SV_blank>VOP<S2SV_blank>start\" ) ; else if ( startcode == 0x1B4 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Session<S2SV_blank>Error\" ) ; else if ( startcode == 0x1B5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B6 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1B7 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"slice<S2SV_blank>start\" ) ; else if ( startcode == 0x1B8 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"extension<S2SV_blank>start\" ) ; else if ( startcode == 0x1B9 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"fgs<S2SV_blank>start\" ) ; else if ( startcode == 0x1BA ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BB ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BC ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BD ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BE ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Still<S2SV_blank>Texture<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Spatial<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>SNR<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Tile<S2SV_blank>start\" ) ; else if ( startcode == 0x1C2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Shape<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"stuffing<S2SV_blank>start\" ) ; else if ( startcode <= 0x1C5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"reserved\" ) ; else if ( startcode <= 0x1FF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"System<S2SV_blank>start\" ) ; av_log ( s -> avctx , AV_LOG_DEBUG , \"<S2SV_blank>at<S2SV_blank>%d\\\\n\" , get_bits_count ( gb ) ) ; } if ( startcode >= 0x120 && startcode <= 0x12F ) { if ( vol ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Ignoring<S2SV_blank>multiple<S2SV_blank>VOL<S2SV_blank>headers\\\\n\" ) ; continue ; } vol ++ ; if ( ( ret = decode_vol_header ( ctx , gb ) ) < 0 ) return ret ; } else if ( startcode == USER_DATA_STARTCODE ) { decode_user_data ( ctx , gb ) ; } else if ( startcode == GOP_STARTCODE ) { mpeg4_decode_gop_header ( s , gb ) ; } else if ( startcode == VOS_STARTCODE ) { <S2SV_StartBug> mpeg4_decode_profile_level ( s , gb ) ; <S2SV_EndBug> if ( s -> avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO && <S2SV_StartBug> ( s -> avctx -> level > 0 && s -> avctx -> level < 9 ) ) { <S2SV_EndBug> s -> studio_profile = 1 ; next_start_code_studio ( gb ) ; extension_and_user_data ( s , gb , 0 ) ; <S2SV_StartBug> } <S2SV_EndBug> } else if ( startcode == VISUAL_OBJ_STARTCODE ) { if ( s -> studio_profile ) { if ( ( ret = decode_studiovisualobject ( ctx , gb ) ) < 0 ) return ret ; } else mpeg4_decode_visual_object ( s , gb ) ; } else if ( startcode == VOP_STARTCODE ) { break ; } align_get_bits ( gb ) ; startcode = 0xff ; } end : if ( s -> avctx -> flags & AV_CODEC_FLAG_LOW_DELAY ) s -> low_delay = 1 ; s -> avctx -> has_b_frames = ! s -> low_delay ; if ( s -> studio_profile ) { <S2SV_StartBug> if ( ! s -> avctx -> bits_per_raw_sample ) { <S2SV_EndBug> av_log ( s -> avctx , AV_LOG_ERROR , \"Missing<S2SV_blank>VOL<S2SV_blank>header\\\\n\" ) ; return AVERROR_INVALIDDATA ; } return decode_studio_vop_header ( ctx , gb ) ; } else return decode_vop_header ( ctx , gb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VOS_STARTCODE ) { int profile , level ; <S2SV_ModStart> s , gb , & profile , & level ) ; if ( <S2SV_ModEnd> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO <S2SV_ModStart> FF_PROFILE_MPEG4_SIMPLE_STUDIO && ( <S2SV_ModEnd> level > 0 <S2SV_ModStart> > 0 && <S2SV_ModEnd> level < 9 <S2SV_ModStart> ) ; } else if ( s -> studio_profile ) { avpriv_request_sample ( s -> avctx , \"Mixes<S2SV_blank>studio<S2SV_blank>and<S2SV_blank>non<S2SV_blank>studio<S2SV_blank>profile\\\\n\" ) ; return AVERROR_PATCHWELCOME ; } s -> avctx -> profile = profile ; s -> avctx -> level = level ; <S2SV_ModStart> studio_profile ) { av_assert0 ( s -> avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9990\n\n```\nCWE-119 static int xpm_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { XPMDecContext * x = avctx -> priv_data ; AVFrame * p = data ; <S2SV_StartBug> const uint8_t * end , * ptr = avpkt -> data ; <S2SV_EndBug> int ncolors , cpp , ret , i , j ; int64_t size ; uint32_t * dst ; avctx -> pix_fmt = AV_PIX_FMT_BGRA ; <S2SV_StartBug> end = avpkt -> data + avpkt -> size ; <S2SV_EndBug> <S2SV_StartBug> while ( memcmp ( ptr , \"/*<S2SV_blank>XPM<S2SV_blank>*/\" , 9 ) && ptr < end - 9 ) <S2SV_EndBug> ptr ++ ; if ( ptr >= end ) { av_log ( avctx , AV_LOG_ERROR , \"missing<S2SV_blank>signature\\\\n\" ) ; return AVERROR_INVALIDDATA ; } ptr += mod_strcspn ( ptr , \"\\\\\"\" ) ; if ( sscanf ( ptr , \"\\\\\"%u<S2SV_blank>%u<S2SV_blank>%u<S2SV_blank>%u\\\\\",\" , & avctx -> width , & avctx -> height , & ncolors , & cpp ) != 4 ) { av_log ( avctx , AV_LOG_ERROR , \"missing<S2SV_blank>image<S2SV_blank>parameters\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( ( ret = ff_set_dimensions ( avctx , avctx -> width , avctx -> height ) ) < 0 ) return ret ; if ( ( ret = ff_get_buffer ( avctx , p , 0 ) ) < 0 ) return ret ; if ( cpp <= 0 || cpp >= 5 ) { av_log ( avctx , AV_LOG_ERROR , \"unsupported/invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>chars<S2SV_blank>per<S2SV_blank>pixel:<S2SV_blank>%d\\\\n\" , cpp ) ; return AVERROR_INVALIDDATA ; } size = 1 ; for ( i = 0 ; i < cpp ; i ++ ) <S2SV_StartBug> size *= 94 ; <S2SV_EndBug> if ( ncolors <= 0 || ncolors > size ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>colors:<S2SV_blank>%d\\\\n\" , ncolors ) ; return AVERROR_INVALIDDATA ; } size *= 4 ; av_fast_padded_malloc ( & x -> pixels , & x -> pixels_size , size ) ; if ( ! x -> pixels ) return AVERROR ( ENOMEM ) ; ptr += mod_strcspn ( ptr , \",\" ) + 1 ; <S2SV_StartBug> for ( i = 0 ; i < ncolors ; i ++ ) { <S2SV_EndBug> const uint8_t * index ; int len ; ptr += mod_strcspn ( ptr , \"\\\\\"\" ) + 1 ; <S2SV_StartBug> if ( ptr + cpp > end ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; index = ptr ; ptr += cpp ; ptr = strstr ( ptr , \"c<S2SV_blank>\" ) ; if ( ptr ) { ptr += 2 ; } else { return AVERROR_INVALIDDATA ; } len = strcspn ( ptr , \"\\\\\"<S2SV_blank>\" ) ; if ( ( ret = ascii2index ( index , cpp ) ) < 0 ) return ret ; x -> pixels [ ret ] = color_string_to_rgba ( ptr , len ) ; ptr += mod_strcspn ( ptr , \",\" ) + 1 ; <S2SV_StartBug> } <S2SV_EndBug> for ( i = 0 ; i < avctx -> height ; i ++ ) { dst = ( uint32_t * ) ( p -> data [ 0 ] + i * p -> linesize [ 0 ] ) ; <S2SV_StartBug> ptr += mod_strcspn ( ptr , \"\\\\\"\" ) + 1 ; <S2SV_EndBug> <S2SV_StartBug> for ( j = 0 ; j < avctx -> width ; j ++ ) { <S2SV_EndBug> <S2SV_StartBug> if ( ptr + cpp > end ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; if ( ( ret = ascii2index ( ptr , cpp ) ) < 0 ) return ret ; * dst ++ = x -> pixels [ ret ] ; ptr += cpp ; } ptr += mod_strcspn ( ptr , \",\" ) + 1 ; } p -> key_frame = 1 ; p -> pict_type = AV_PICTURE_TYPE_I ; * got_frame = 1 ; return avpkt -> size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * ptr <S2SV_ModEnd> ; int ncolors <S2SV_ModStart> = AV_PIX_FMT_BGRA ; av_fast_padded_malloc ( & x -> buf , & x -> buf_size , avpkt -> size ) ; if ( ! x -> buf ) return AVERROR ( ENOMEM ) ; memcpy ( x -> buf , avpkt -> data , avpkt -> size ) ; x -> buf [ avpkt -> size ] = 0 ; ptr = x -> buf ; end = x -> buf <S2SV_ModEnd> + avpkt -> <S2SV_ModStart> ; while ( end - ptr > 9 && <S2SV_ModStart> , 9 ) ) ptr ++ ; if ( end - ptr <= 9 <S2SV_ModEnd> ) { av_log <S2SV_ModStart> ) size *= 95 <S2SV_ModEnd> ; if ( <S2SV_ModStart> + 1 ; if ( end - ptr < 1 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ; if ( end - ptr < cpp <S2SV_ModEnd> ) return AVERROR_INVALIDDATA <S2SV_ModStart> + 1 ; if ( end - ptr < 1 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ] ) ; if ( end - ptr < 1 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> + 1 ; if ( end - ptr < 1 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> { if ( end - ptr < cpp <S2SV_ModEnd> ) return AVERROR_INVALIDDATA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static struct nfs4_state * nfs4_do_open ( struct inode * dir , struct path * path , int flags , struct iattr * sattr , struct rpc_cred * cred ) <S2SV_EndBug> { struct nfs4_exception exception = { } ; struct nfs4_state * res ; int status ; do { <S2SV_StartBug> status = _nfs4_do_open ( dir , path , flags , sattr , cred , & res ) ; <S2SV_EndBug> if ( status == 0 ) break ; if ( status == - NFS4ERR_BAD_SEQID ) { printk ( KERN_WARNING \"NFS:<S2SV_blank>v4<S2SV_blank>server<S2SV_blank>%s<S2SV_blank>\" \"<S2SV_blank>returned<S2SV_blank>a<S2SV_blank>bad<S2SV_blank>sequence-id<S2SV_blank>error!\\\\n\" , NFS_SERVER ( dir ) -> nfs_client -> cl_hostname ) ; exception . retry = 1 ; continue ; } if ( status == - NFS4ERR_BAD_STATEID ) { exception . retry = 1 ; continue ; } if ( status == - EAGAIN ) { exception . retry = 1 ; continue ; } res = ERR_PTR ( nfs4_handle_exception ( NFS_SERVER ( dir ) , status , & exception ) ) ; } while ( exception . retry ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> path * path , fmode_t fmode <S2SV_ModStart> dir , path , fmode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3760\n\n```\nCWE-20 int main ( int argc , char * * argv ) { if ( ! parse_args ( argc , argv ) ) { usage ( argv [ 0 ] ) ; } if ( bond && discoverable ) { fprintf ( stderr , \"Can<S2SV_blank>only<S2SV_blank>select<S2SV_blank>either<S2SV_blank>bond<S2SV_blank>or<S2SV_blank>discoverable,<S2SV_blank>not<S2SV_blank>both\\\\n\" ) ; usage ( argv [ 0 ] ) ; } if ( sco_listen && sco_connect ) { fprintf ( stderr , \"Can<S2SV_blank>only<S2SV_blank>select<S2SV_blank>either<S2SV_blank>sco_listen<S2SV_blank>or<S2SV_blank>sco_connect,<S2SV_blank>not<S2SV_blank>both\\\\n\" ) ; usage ( argv [ 0 ] ) ; } if ( ! bond && ! discover && ! discoverable && ! up && ! get_name && ! set_name && ! sco_listen && ! sco_connect ) { fprintf ( stderr , \"Must<S2SV_blank>specify<S2SV_blank>one<S2SV_blank>command\\\\n\" ) ; usage ( argv [ 0 ] ) ; } if ( signal ( SIGINT , sig_handler ) == SIG_ERR ) { fprintf ( stderr , \"Will<S2SV_blank>be<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>catch<S2SV_blank>signals\\\\n\" ) ; } fprintf ( stdout , \"Bringing<S2SV_blank>up<S2SV_blank>bluetooth<S2SV_blank>adapter\\\\n\" ) ; if ( ! hal_open ( callbacks_get_adapter_struct ( ) ) ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>Bluetooth<S2SV_blank>HAL.\\\\n\" ) ; return 1 ; } if ( discover ) { <S2SV_StartBug> CALL_AND_WAIT ( bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; fprintf ( stdout , \"Starting<S2SV_blank>to<S2SV_blank>start<S2SV_blank>discovery\\\\n\" ) ; CALL_AND_WAIT ( bt_interface -> start_discovery ( ) , discovery_state_changed ) ; fprintf ( stdout , \"Started<S2SV_blank>discovery<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>seconds\\\\n\" , timeout_in_sec ) ; sleep ( timeout_in_sec ) ; fprintf ( stdout , \"Starting<S2SV_blank>to<S2SV_blank>cancel<S2SV_blank>discovery\\\\n\" ) ; CALL_AND_WAIT ( bt_interface -> cancel_discovery ( ) , discovery_state_changed ) ; fprintf ( stdout , \"Cancelled<S2SV_blank>discovery<S2SV_blank>after<S2SV_blank>%d<S2SV_blank>seconds\\\\n\" , timeout_in_sec ) ; } if ( discoverable ) { <S2SV_StartBug> CALL_AND_WAIT ( bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; bt_property_t * property = property_new_scan_mode ( BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE ) ; int rc = bt_interface -> set_adapter_property ( property ) ; fprintf ( stdout , \"Set<S2SV_blank>rc:%d<S2SV_blank>device<S2SV_blank>as<S2SV_blank>discoverable<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>seconds\\\\n\" , rc , timeout_in_sec ) ; sleep ( timeout_in_sec ) ; property_free ( property ) ; } if ( bond ) { if ( bdaddr_is_empty ( & bt_remote_bdaddr ) ) { fprintf ( stderr , \"Must<S2SV_blank>specify<S2SV_blank>a<S2SV_blank>remote<S2SV_blank>device<S2SV_blank>address<S2SV_blank>[<S2SV_blank>--bdaddr=xx:yy:zz:aa:bb:cc<S2SV_blank>]\\\\n\" ) ; exit ( 1 ) ; } <S2SV_StartBug> CALL_AND_WAIT ( bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; int rc = bt_interface -> create_bond ( & bt_remote_bdaddr , 0 ) ; fprintf ( stdout , \"Started<S2SV_blank>bonding:%d<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>seconds\\\\n\" , rc , timeout_in_sec ) ; sleep ( timeout_in_sec ) ; } if ( up ) { <S2SV_StartBug> CALL_AND_WAIT ( bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; fprintf ( stdout , \"Waiting<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>seconds\\\\n\" , timeout_in_sec ) ; sleep ( timeout_in_sec ) ; } if ( get_name ) { <S2SV_StartBug> CALL_AND_WAIT ( bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; int error ; CALL_AND_WAIT ( error = bt_interface -> get_adapter_property ( BT_PROPERTY_BDNAME ) , adapter_properties ) ; if ( error != BT_STATUS_SUCCESS ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>adapter<S2SV_blank>property\\\\n\" ) ; exit ( 1 ) ; } bt_property_t * property = adapter_get_property ( BT_PROPERTY_BDNAME ) ; const bt_bdname_t * name = property_as_name ( property ) ; if ( name ) printf ( \"Queried<S2SV_blank>bluetooth<S2SV_blank>device<S2SV_blank>name:%s\\\\n\" , name -> name ) ; else printf ( \"No<S2SV_blank>name\\\\n\" ) ; } if ( set_name ) { <S2SV_StartBug> CALL_AND_WAIT ( bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; bt_property_t * property = property_new_name ( bd_name ) ; printf ( \"Setting<S2SV_blank>bluetooth<S2SV_blank>device<S2SV_blank>name<S2SV_blank>to:%s\\\\n\" , bd_name ) ; int error ; CALL_AND_WAIT ( error = bt_interface -> set_adapter_property ( property ) , adapter_properties ) ; if ( error != BT_STATUS_SUCCESS ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>adapter<S2SV_blank>property\\\\n\" ) ; exit ( 1 ) ; } CALL_AND_WAIT ( error = bt_interface -> get_adapter_property ( BT_PROPERTY_BDNAME ) , adapter_properties ) ; if ( error != BT_STATUS_SUCCESS ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>adapter<S2SV_blank>property\\\\n\" ) ; exit ( 1 ) ; } property_free ( property ) ; sleep ( timeout_in_sec ) ; } if ( sco_listen ) { <S2SV_StartBug> CALL_AND_WAIT ( bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; bt_property_t * property = property_new_scan_mode ( BT_SCAN_MODE_CONNECTABLE_DISCOVERABLE ) ; CALL_AND_WAIT ( bt_interface -> set_adapter_property ( property ) , adapter_properties ) ; property_free ( property ) ; const btsock_interface_t * sock = bt_interface -> get_profile_interface ( BT_PROFILE_SOCKETS_ID ) ; int rfcomm_fd = INVALID_FD ; int error = sock -> listen ( BTSOCK_RFCOMM , \"meow\" , ( const uint8_t * ) & HFP_AG_UUID , 0 , & rfcomm_fd , 0 ) ; if ( error != BT_STATUS_SUCCESS ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>listen<S2SV_blank>for<S2SV_blank>incoming<S2SV_blank>RFCOMM<S2SV_blank>socket:<S2SV_blank>%d\\\\n\" , error ) ; exit ( 1 ) ; } int sock_fd = INVALID_FD ; error = sock -> listen ( BTSOCK_SCO , NULL , NULL , 5 , & sock_fd , 0 ) ; if ( error != BT_STATUS_SUCCESS ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>listen<S2SV_blank>for<S2SV_blank>incoming<S2SV_blank>SCO<S2SV_blank>sockets:<S2SV_blank>%d\\\\n\" , error ) ; exit ( 1 ) ; } fprintf ( stdout , \"Waiting<S2SV_blank>for<S2SV_blank>incoming<S2SV_blank>SCO<S2SV_blank>connections...\\\\n\" ) ; sleep ( timeout_in_sec ) ; } if ( sco_connect ) { if ( bdaddr_is_empty ( & bt_remote_bdaddr ) ) { fprintf ( stderr , \"Must<S2SV_blank>specify<S2SV_blank>a<S2SV_blank>remote<S2SV_blank>device<S2SV_blank>address<S2SV_blank>[<S2SV_blank>--bdaddr=xx:yy:zz:aa:bb:cc<S2SV_blank>]\\\\n\" ) ; exit ( 1 ) ; } <S2SV_StartBug> CALL_AND_WAIT ( bt_interface -> enable ( ) , adapter_state_changed ) ; <S2SV_EndBug> fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; const btsock_interface_t * sock = bt_interface -> get_profile_interface ( BT_PROFILE_SOCKETS_ID ) ; int rfcomm_fd = INVALID_FD ; int error = sock -> connect ( & bt_remote_bdaddr , BTSOCK_RFCOMM , ( const uint8_t * ) & HFP_AG_UUID , 0 , & rfcomm_fd , 0 ) ; if ( error != BT_STATUS_SUCCESS ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>connect<S2SV_blank>to<S2SV_blank>RFCOMM<S2SV_blank>socket:<S2SV_blank>%d.\\\\n\" , error ) ; exit ( 1 ) ; } WAIT ( acl_state_changed ) ; fprintf ( stdout , \"Establishing<S2SV_blank>SCO<S2SV_blank>connection...\\\\n\" ) ; int sock_fd = INVALID_FD ; error = sock -> connect ( & bt_remote_bdaddr , BTSOCK_SCO , NULL , 5 , & sock_fd , 0 ) ; if ( error != BT_STATUS_SUCCESS ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>connect<S2SV_blank>to<S2SV_blank>SCO<S2SV_blank>socket:<S2SV_blank>%d.\\\\n\" , error ) ; exit ( 1 ) ; } sleep ( timeout_in_sec ) ; } CALL_AND_WAIT ( bt_interface -> disable ( ) , adapter_state_changed ) ; fprintf ( stdout , \"BT<S2SV_blank>adapter<S2SV_blank>is<S2SV_blank>down\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> enable ( false <S2SV_ModStart> -> enable ( false <S2SV_ModStart> -> enable ( false <S2SV_ModStart> -> enable ( false <S2SV_ModStart> -> enable ( false <S2SV_ModStart> -> enable ( false <S2SV_ModStart> -> enable ( false <S2SV_ModStart> -> enable ( false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9556\n\n```\nCWE-119 static Image * ReadSGIImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; SGIInfo iris_info ; size_t bytes_per_pixel , quantum ; ssize_t count , y , z ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } iris_info . magic = ReadBlobMSBShort ( image ) ; do { if ( iris_info . magic != 0x01DA ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . storage = ( unsigned char ) ReadBlobByte ( image ) ; switch ( iris_info . storage ) { case 0x00 : image -> compression = NoCompression ; break ; case 0x01 : image -> compression = RLECompression ; break ; default : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } iris_info . bytes_per_pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( iris_info . bytes_per_pixel == 0 ) || ( iris_info . bytes_per_pixel > 2 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_StartBug> iris_info . dimension = ReadBlobMSBShort ( image ) ; <S2SV_EndBug> iris_info . columns = ReadBlobMSBShort ( image ) ; iris_info . rows = ReadBlobMSBShort ( image ) ; iris_info . depth = ReadBlobMSBShort ( image ) ; if ( ( iris_info . depth == 0 ) || ( iris_info . depth > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . minimum_value = ReadBlobMSBLong ( image ) ; iris_info . maximum_value = ReadBlobMSBLong ( image ) ; iris_info . sans = ReadBlobMSBLong ( image ) ; count = ReadBlob ( image , sizeof ( iris_info . name ) , ( unsigned char * ) iris_info . name ) ; if ( ( size_t ) count != sizeof ( iris_info . name ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . name [ sizeof ( iris_info . name ) - 1 ] = '\\\\0' ; if ( * iris_info . name != '\\\\0' ) ( void ) SetImageProperty ( image , \"label\" , iris_info . name , exception ) ; iris_info . pixel_format = ReadBlobMSBLong ( image ) ; if ( iris_info . pixel_format != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , sizeof ( iris_info . filler ) , iris_info . filler ) ; if ( ( size_t ) count != sizeof ( iris_info . filler ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; image -> depth = ( size_t ) MagickMin ( iris_info . depth , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . pixel_format == 0 ) image -> depth = ( size_t ) MagickMin ( ( size_t ) 8 * iris_info . bytes_per_pixel , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . depth < 3 ) { image -> storage_class = PseudoClass ; image -> colors = ( size_t ) ( iris_info . bytes_per_pixel > 1 ? 65535 : 256 ) ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; bytes_per_pixel = ( size_t ) iris_info . bytes_per_pixel ; number_pixels = ( MagickSizeType ) iris_info . columns * iris_info . rows ; if ( ( 4 * bytes_per_pixel * number_pixels ) != ( ( MagickSizeType ) ( size_t ) ( 4 * bytes_per_pixel * number_pixels ) ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info = AcquireVirtualMemory ( iris_info . columns , iris_info . rows * 4 * bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( int ) iris_info . storage != 0x01 ) { unsigned char * scanline ; scanline = ( unsigned char * ) AcquireQuantumMemory ( iris_info . columns , bytes_per_pixel * sizeof ( * scanline ) ) ; if ( scanline == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels + bytes_per_pixel * z ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { count = ReadBlob ( image , bytes_per_pixel * iris_info . columns , scanline ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; if ( bytes_per_pixel == 2 ) for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ 2 * x ] ; * ( p + 1 ) = scanline [ 2 * x + 1 ] ; p += 8 ; } else for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ x ] ; p += 4 ; } } } scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; } else { MemoryInfo * packet_info ; size_t * runlength ; ssize_t offset , * offsets ; unsigned char * packets ; unsigned int data_order ; offsets = ( ssize_t * ) AcquireQuantumMemory ( ( size_t ) iris_info . rows , iris_info . depth * sizeof ( * offsets ) ) ; runlength = ( size_t * ) AcquireQuantumMemory ( iris_info . rows , iris_info . depth * sizeof ( * runlength ) ) ; packet_info = AcquireVirtualMemory ( ( size_t ) iris_info . columns + 10UL , 4UL * sizeof ( * packets ) ) ; if ( ( offsets == ( ssize_t * ) NULL ) || ( runlength == ( size_t * ) NULL ) || ( packet_info == ( MemoryInfo * ) NULL ) ) { if ( offsets == ( ssize_t * ) NULL ) offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; if ( runlength == ( size_t * ) NULL ) runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; if ( packet_info == ( MemoryInfo * ) NULL ) packet_info = RelinquishVirtualMemory ( packet_info ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } packets = ( unsigned char * ) GetVirtualMemoryBlob ( packet_info ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) offsets [ i ] = ( ssize_t ) ReadBlobMSBSignedLong ( image ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) { runlength [ i ] = ReadBlobMSBLong ( image ) ; if ( runlength [ i ] > ( 4 * ( size_t ) iris_info . columns + 10 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } offset = 0 ; data_order = 0 ; for ( y = 0 ; ( ( y < ( ssize_t ) iris_info . rows ) && ( data_order == 0 ) ) ; y ++ ) for ( z = 0 ; ( ( z < ( ssize_t ) iris_info . depth ) && ( data_order == 0 ) ) ; z ++ ) { if ( offsets [ y + z * iris_info . rows ] < offset ) data_order = 1 ; offset = offsets [ y + z * iris_info . rows ] ; } offset = ( ssize_t ) TellBlob ( image ) ; if ( data_order == 1 ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( MagickOffsetType ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , ( ssize_t ) iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } } } else { MagickOffsetType position ; position = TellBlob ( image ) ; p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( MagickOffsetType ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , ( ssize_t ) iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } offset = ( ssize_t ) SeekBlob ( image , position , SEEK_SET ) ; } packet_info = RelinquishVirtualMemory ( packet_info ) ; runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; } image -> alpha_trait = iris_info . depth == 4 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; if ( image -> storage_class == DirectClass ) { if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 0 ) << 8 ) | ( * ( p + 1 ) ) ) ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 2 ) << 8 ) | ( * ( p + 3 ) ) ) ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 4 ) << 8 ) | ( * ( p + 5 ) ) ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 6 ) << 8 ) | ( * ( p + 7 ) ) ) ) , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + 1 ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * ( p + 3 ) ) , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { quantum = ( * p << 8 ) ; quantum |= ( * ( p + 1 ) ) ; SetPixelIndex ( image , ( Quantum ) quantum , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; iris_info . magic = ReadBlobMSBShort ( image ) ; if ( iris_info . magic == 0x01DA ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( iris_info . magic == 0x01DA ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ReadBlobMSBShort ( image ) ; if ( ( iris_info . dimension == 0 ) || ( iris_info . dimension > 3 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10248\n\n```\nCWE-476 static void jpc_undo_roi ( jas_matrix_t * x , int roishift , int bgshift , int numbps ) { int i ; int j ; int thresh ; jpc_fix_t val ; jpc_fix_t mag ; bool warn ; uint_fast32_t mask ; <S2SV_StartBug> if ( roishift == 0 && bgshift == 0 ) { <S2SV_EndBug> return ; } thresh = 1 << roishift ; warn = false ; for ( i = 0 ; i < jas_matrix_numrows ( x ) ; ++ i ) { for ( j = 0 ; j < jas_matrix_numcols ( x ) ; ++ j ) { val = jas_matrix_get ( x , i , j ) ; mag = JAS_ABS ( val ) ; if ( mag >= thresh ) { mag >>= roishift ; val = ( val < 0 ) ? ( - mag ) : mag ; jas_matrix_set ( x , i , j , val ) ; } else { mag <<= bgshift ; <S2SV_StartBug> mask = ( 1 << numbps ) - 1 ; <S2SV_EndBug> if ( mag & ( ~ mask ) ) { if ( ! warn ) { jas_eprintf ( \"warning:<S2SV_blank>possibly<S2SV_blank>corrupt<S2SV_blank>code<S2SV_blank>stream\\\\n\" ) ; warn = true ; } mag &= mask ; } val = ( val < 0 ) ? ( - mag ) : mag ; jas_matrix_set ( x , i , j , val ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( roishift < 0 ) { jas_eprintf ( \"warning:<S2SV_blank>forcing<S2SV_blank>negative<S2SV_blank>ROI<S2SV_blank>shift<S2SV_blank>to<S2SV_blank>zero<S2SV_blank>\" \"(bitstream<S2SV_blank>is<S2SV_blank>probably<S2SV_blank>corrupt)\\\\n\" ) ; roishift = 0 ; } if ( roishift <S2SV_ModStart> mask = ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << numbps )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4530\n\n```\nCWE-200 static int load_script ( struct linux_binprm * bprm ) { const char * i_arg , * i_name ; char * cp ; struct file * file ; char interp [ BINPRM_BUF_SIZE ] ; int retval ; if ( ( bprm -> buf [ 0 ] != '#' ) || ( bprm -> buf [ 1 ] != '!' ) ) return - ENOEXEC ; allow_write_access ( bprm -> file ) ; fput ( bprm -> file ) ; bprm -> file = NULL ; bprm -> buf [ BINPRM_BUF_SIZE - 1 ] = '\\\\0' ; if ( ( cp = strchr ( bprm -> buf , '\\\\n' ) ) == NULL ) cp = bprm -> buf + BINPRM_BUF_SIZE - 1 ; * cp = '\\\\0' ; while ( cp > bprm -> buf ) { cp -- ; if ( ( * cp == '<S2SV_blank>' ) || ( * cp == '\\\\t' ) ) * cp = '\\\\0' ; else break ; } for ( cp = bprm -> buf + 2 ; ( * cp == '<S2SV_blank>' ) || ( * cp == '\\\\t' ) ; cp ++ ) ; if ( * cp == '\\\\0' ) return - ENOEXEC ; i_name = cp ; i_arg = NULL ; for ( ; * cp && ( * cp != '<S2SV_blank>' ) && ( * cp != '\\\\t' ) ; cp ++ ) ; while ( ( * cp == '<S2SV_blank>' ) || ( * cp == '\\\\t' ) ) * cp ++ = '\\\\0' ; if ( * cp ) i_arg = cp ; strcpy ( interp , i_name ) ; retval = remove_arg_zero ( bprm ) ; if ( retval ) return retval ; retval = copy_strings_kernel ( 1 , & bprm -> interp , bprm ) ; if ( retval < 0 ) return retval ; bprm -> argc ++ ; if ( i_arg ) { retval = copy_strings_kernel ( 1 , & i_arg , bprm ) ; if ( retval < 0 ) return retval ; bprm -> argc ++ ; } retval = copy_strings_kernel ( 1 , & i_name , bprm ) ; if ( retval ) return retval ; bprm -> argc ++ ; <S2SV_StartBug> bprm -> interp = interp ; <S2SV_EndBug> file = open_exec ( interp ) ; if ( IS_ERR ( file ) ) return PTR_ERR ( file ) ; bprm -> file = file ; retval = prepare_binprm ( bprm ) ; if ( retval < 0 ) return retval ; <S2SV_StartBug> return search_binary_handler ( bprm ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> argc ++ ; retval = bprm_change_interp ( interp , <S2SV_ModEnd> bprm ) ; <S2SV_ModStart> return retval ; file = open_exec ( interp ) ; if ( IS_ERR ( file ) ) return PTR_ERR ( file ) ; bprm -> file = file ; retval = prepare_binprm ( bprm ) ; if ( retval < 0 ) return retval ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 struct file * get_empty_filp ( void ) { const struct cred * cred = current_cred ( ) ; static long old_max ; struct file * f ; int error ; if ( get_nr_files ( ) >= files_stat . max_files && ! capable ( CAP_SYS_ADMIN ) ) { if ( percpu_counter_sum_positive ( & nr_files ) >= files_stat . max_files ) goto over ; } f = kmem_cache_zalloc ( filp_cachep , GFP_KERNEL ) ; if ( unlikely ( ! f ) ) return ERR_PTR ( - ENOMEM ) ; percpu_counter_inc ( & nr_files ) ; f -> f_cred = get_cred ( cred ) ; error = security_file_alloc ( f ) ; if ( unlikely ( error ) ) { file_free ( f ) ; return ERR_PTR ( error ) ; } <S2SV_StartBug> INIT_LIST_HEAD ( & f -> f_u . fu_list ) ; <S2SV_EndBug> atomic_long_set ( & f -> f_count , 1 ) ; rwlock_init ( & f -> f_owner . lock ) ; spin_lock_init ( & f -> f_lock ) ; eventpoll_init_file ( f ) ; return f ; over : if ( get_nr_files ( ) > old_max ) { pr_info ( \"VFS:<S2SV_blank>file-max<S2SV_blank>limit<S2SV_blank>%lu<S2SV_blank>reached\\\\n\" , get_max_files ( ) ) ; old_max = get_nr_files ( ) ; } return ERR_PTR ( - ENFILE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } <S2SV_ModEnd> atomic_long_set ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-172(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3829\n\n```\nCWE-172 WORD32 ih264d_video_decode ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ( dec_hdl -> pv_codec_handle ) ; WORD32 i4_err_status = 0 ; UWORD8 * pu1_buf = NULL ; WORD32 buflen ; UWORD32 u4_max_ofst , u4_length_of_start_code = 0 ; UWORD32 bytes_consumed = 0 ; UWORD32 cur_slice_is_nonref = 0 ; UWORD32 u4_next_is_aud ; UWORD32 u4_first_start_code_found = 0 ; WORD32 ret = 0 , api_ret_value = IV_SUCCESS ; WORD32 header_data_left = 0 , frame_data_left = 0 ; UWORD8 * pu1_bitstrm_buf ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; ithread_set_name ( ( void * ) \"Parse_thread\" ) ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size ; u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } ps_dec -> pv_dec_out = ps_dec_op ; if ( ps_dec -> init_done != 1 ) { return IV_FAIL ; } DATA_SYNC ( ) ; if ( 0 == ps_dec -> u1_flushfrm ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } ps_dec -> u1_pic_decode_done = 0 ; ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec -> ps_out_buffer = NULL ; if ( ps_dec_ip -> u4_size >= offsetof ( ivd_video_decode_ip_t , s_out_buffer ) ) ps_dec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 0 ; ps_dec -> s_disp_op . u4_error_code = 1 ; ps_dec -> u4_fmt_conv_num_rows = FMT_CONV_NUM_ROWS ; if ( 0 == ps_dec -> u4_share_disp_buf && ps_dec -> i4_decode_header == 0 ) { UWORD32 i ; if ( ps_dec -> ps_out_buffer -> u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec -> ps_out_buffer -> u4_num_bufs ; i ++ ) { if ( ps_dec -> ps_out_buffer -> pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec -> ps_out_buffer -> u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } if ( ps_dec -> u4_total_frames_decoded >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code = ERROR_FRAME_LIMIT_OVER ; return IV_FAIL ; } ps_dec -> u4_ts = ps_dec_ip -> u4_ts ; ps_dec_op -> u4_error_code = 0 ; ps_dec_op -> e_pic_type = - 1 ; ps_dec_op -> u4_output_present = 0 ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; { if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } } ps_dec -> u4_slice_start_code_found = 0 ; if ( ps_dec -> u1_init_dec_flag == 1 && ps_dec -> u4_share_disp_buf == 1 && ps_dec -> u1_flushfrm == 0 ) { UWORD32 i ; WORD32 disp_avail = 0 , free_id ; for ( i = 0 ; i < ps_dec -> u1_pic_bufs ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_mapping [ i ] || 1 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) { disp_avail = 1 ; break ; } } if ( 0 == disp_avail ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } while ( 1 ) { pic_buffer_t * ps_pic_buf ; ps_pic_buf = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & free_id ) ; if ( ps_pic_buf == NULL ) { UWORD32 i , display_queued = 0 ; for ( i = 0 ; i < ( MAX_DISP_BUFS_NEW ) ; i ++ ) { if ( 0 != ps_dec -> u4_disp_buf_mapping [ i ] ) { display_queued = 1 ; break ; } } if ( 1 == display_queued ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } } else { if ( 1 == ps_dec -> u4_disp_buf_mapping [ free_id ] ) { ih264_buf_mgr_set_status ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; } else { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; break ; } } } } if ( ps_dec -> u1_flushfrm && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; ps_dec -> u4_output_present = 1 ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; ps_dec_op -> u4_new_seq = 0 ; ps_dec_op -> u4_output_present = ps_dec -> u4_output_present ; ps_dec_op -> u4_progressive_frame_flag = ps_dec -> s_disp_op . u4_progressive_frame_flag ; ps_dec_op -> e_output_format = ps_dec -> s_disp_op . e_output_format ; ps_dec_op -> s_disp_frm_buf = ps_dec -> s_disp_op . s_disp_frm_buf ; ps_dec_op -> e4_fld_type = ps_dec -> s_disp_op . e4_fld_type ; ps_dec_op -> u4_ts = ps_dec -> s_disp_op . u4_ts ; ps_dec_op -> u4_disp_buf_id = ps_dec -> s_disp_op . u4_disp_buf_id ; ps_dec_op -> u4_is_ref_flag = - 1 ; ps_dec_op -> e_pic_type = IV_NA_FRAME ; ps_dec_op -> u4_frame_decoded_flag = 0 ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { return ( IV_SUCCESS ) ; } else return ( IV_FAIL ) ; } if ( ps_dec -> u1_res_changed == 1 ) { ih264d_init_decoder ( ps_dec ) ; } ps_dec -> u4_prev_nal_skipped = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> cur_dec_mb_num = 0 ; ps_dec -> cur_recon_mb_num = 0 ; <S2SV_StartBug> ps_dec -> u4_first_slice_in_pic = 2 ; <S2SV_EndBug> ps_dec -> u1_slice_header_done = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> u4_dec_thread_created = 0 ; ps_dec -> u4_bs_deblk_thread_created = 0 ; ps_dec -> u4_cur_bs_mb_num = 0 ; ps_dec -> u4_start_recon_deblk = 0 ; DEBUG_THREADS_PRINTF ( \"<S2SV_blank>Starting<S2SV_blank>process<S2SV_blank>call\\\\n\" ) ; ps_dec -> u4_pic_buf_got = 0 ; do { WORD32 buf_size ; pu1_buf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer + ps_dec_op -> u4_num_bytes_consumed ; u4_max_ofst = ps_dec_ip -> u4_num_Bytes - ps_dec_op -> u4_num_bytes_consumed ; if ( ( NULL == ps_dec -> pu1_bits_buf_dynamic ) && ( ps_dec -> i4_header_decoded & 1 ) ) { WORD32 size ; void * pv_buf ; void * pv_mem_ctxt = ps_dec -> pv_mem_ctxt ; size = MAX ( 256000 , ps_dec -> u2_pic_wd * ps_dec -> u2_pic_ht * 3 / 2 ) ; pv_buf = ps_dec -> pf_aligned_alloc ( pv_mem_ctxt , 128 , size ) ; RETURN_IF ( ( NULL == pv_buf ) , IV_FAIL ) ; ps_dec -> pu1_bits_buf_dynamic = pv_buf ; ps_dec -> u4_dynamic_bits_buf_size = size ; } if ( ps_dec -> pu1_bits_buf_dynamic ) { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_dynamic ; buf_size = ps_dec -> u4_dynamic_bits_buf_size ; } else { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_static ; buf_size = ps_dec -> u4_static_bits_buf_size ; } u4_next_is_aud = 0 ; buflen = ih264d_find_start_code ( pu1_buf , 0 , u4_max_ofst , & u4_length_of_start_code , & u4_next_is_aud ) ; if ( buflen == - 1 ) buflen = 0 ; buflen = MIN ( buflen , buf_size ) ; bytes_consumed = buflen + u4_length_of_start_code ; ps_dec_op -> u4_num_bytes_consumed += bytes_consumed ; { UWORD8 u1_firstbyte , u1_nal_ref_idc ; if ( ps_dec -> i4_app_skip_mode == IVD_SKIP_B ) { u1_firstbyte = * ( pu1_buf + u4_length_of_start_code ) ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_firstbyte ) ) ; if ( u1_nal_ref_idc == 0 ) { cur_slice_is_nonref = 1 ; continue ; } else { if ( 1 == cur_slice_is_nonref ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> e_pic_type = IV_B_FRAME ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } } } } if ( buflen ) { memcpy ( pu1_bitstrm_buf , pu1_buf + u4_length_of_start_code , buflen ) ; if ( ( buflen + 8 ) < buf_size ) { memset ( pu1_bitstrm_buf + buflen , 0 , 8 ) ; } u4_first_start_code_found = 1 ; } else { if ( u4_first_start_code_found == 0 ) { ps_dec -> i4_error_code = ERROR_START_CODE_NOT_FOUND ; ps_dec_op -> u4_error_code |= 1 << IVD_INSUFFICIENTDATA ; if ( ps_dec -> u4_pic_buf_got == 0 ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; ps_dec_op -> u4_error_code = ps_dec -> i4_error_code ; ps_dec_op -> u4_frame_decoded_flag = 0 ; return ( IV_FAIL ) ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } else { frame_data_left = 0 ; continue ; } } ps_dec -> u4_return_to_app = 0 ; ret = ih264d_parse_nal_unit ( dec_hdl , ps_dec_op , pu1_bitstrm_buf , buflen ) ; if ( ret != OK ) { UWORD32 error = ih264d_map_error ( ret ) ; ps_dec_op -> u4_error_code = error | ret ; api_ret_value = IV_FAIL ; if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ps_dec -> u4_slice_start_code_found = 0 ; break ; } if ( ( ret == ERROR_INCOMPLETE_FRAME ) || ( ret == ERROR_DANGLING_FIELD_IN_PIC ) ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; api_ret_value = IV_FAIL ; break ; } if ( ret == ERROR_IN_LAST_SLICE_OF_PIC ) { api_ret_value = IV_FAIL ; break ; } } if ( ps_dec -> u4_return_to_app ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } header_data_left = ( ( ps_dec -> i4_decode_header == 1 ) && ( ps_dec -> i4_header_decoded != 3 ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; frame_data_left = ( ( ( ps_dec -> i4_decode_header == 0 ) && ( ( ps_dec -> u1_pic_decode_done == 0 ) || ( u4_next_is_aud == 1 ) ) ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; } while ( ( header_data_left == 1 ) || ( frame_data_left == 1 ) ) ; if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ret != IVD_MEM_ALLOC_FAILED ) && ps_dec -> u2_total_mbs_coded < ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { WORD32 num_mb_skipped ; WORD32 prev_slice_err ; pocstruct_t temp_poc ; WORD32 ret1 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u4_pic_buf_got == 0 ) ) prev_slice_err = 1 ; else prev_slice_err = 2 ; ret1 = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL , ps_dec -> ps_cur_slice -> u2_frame_num , & temp_poc , prev_slice_err ) ; if ( ( ret1 == ERROR_UNAVAIL_PICBUF_T ) || ( ret1 == ERROR_UNAVAIL_MVBUF_T ) ) { return IV_FAIL ; } } if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } if ( ret == IVD_RES_CHANGED ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; } return IV_FAIL ; } if ( ps_dec -> u1_separate_parse ) { if ( ps_dec -> u4_num_cores == 2 ) { if ( ( ps_dec -> u4_nmb_deblk == 0 ) && ( ps_dec -> u4_start_recon_deblk == 1 ) && ( ps_dec -> ps_cur_sps -> u1_mb_aff_flag == 0 ) ) { UWORD32 u4_num_mbs , u4_max_addr ; tfr_ctxt_t s_tfr_ctxt ; tfr_ctxt_t * ps_tfr_cxt = & s_tfr_ctxt ; pad_mgr_t * ps_pad_mgr = & ps_dec -> s_pad_mgr ; u4_max_addr = ( ps_dec -> u2_frm_wd_in_mbs * ps_dec -> u2_frm_ht_in_mbs ) - 1 ; ps_dec -> u4_cur_bs_mb_num = u4_max_addr + 1 ; ih264d_init_deblk_tfr_ctxt ( ps_dec , ps_pad_mgr , ps_tfr_cxt , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; u4_num_mbs = u4_max_addr - ps_dec -> u4_cur_deblk_mb_num + 1 ; DEBUG_PERF_PRINTF ( \"mbs<S2SV_blank>left<S2SV_blank>for<S2SV_blank>deblocking=<S2SV_blank>%d<S2SV_blank>\\\\n\" , u4_num_mbs ) ; if ( u4_num_mbs != 0 ) ih264d_check_mb_map_deblk ( ps_dec , u4_num_mbs , ps_tfr_cxt , 1 ) ; ps_dec -> u4_start_recon_deblk = 0 ; } } ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } } DATA_SYNC ( ) ; if ( ( ps_dec_op -> u4_error_code & 0xff ) != ERROR_DYNAMIC_RESOLUTION_NOT_SUPPORTED ) { ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; } if ( ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> i4_decode_header == 1 && ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> u4_prev_nal_skipped ) { ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ERROR_DANGLING_FIELD_IN_PIC != i4_err_status ) ) { if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) { if ( 1 == ps_dec -> ps_cur_slice -> u1_bottom_field_flag ) { ps_dec -> u1_top_bottom_decoded |= BOT_FIELD_ONLY ; } else { ps_dec -> u1_top_bottom_decoded |= TOP_FIELD_ONLY ; } } if ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) { ret = ih264d_deblock_display ( ps_dec ) ; if ( ret != 0 ) { return IV_FAIL ; } } if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_dec -> i4_frametype = IV_IDR_FRAME ; } else if ( ps_dec -> i4_pic_type == B_SLICE ) { ps_dec -> i4_frametype = IV_B_FRAME ; } else if ( ps_dec -> i4_pic_type == P_SLICE ) { ps_dec -> i4_frametype = IV_P_FRAME ; } else if ( ps_dec -> i4_pic_type == I_SLICE ) { ps_dec -> i4_frametype = IV_I_FRAME ; } else { H264_DEC_DEBUG_PRINT ( \"Shouldn\\'t<S2SV_blank>come<S2SV_blank>here\\\\n\" ) ; } ps_dec -> i4_content_type = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded + 2 ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded - ps_dec -> ps_cur_slice -> u1_field_pic_flag ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } { if ( ( IVD_DECODE_FRAME_OUT == ps_dec -> e_frm_out_mode ) && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 1 ; } } ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; if ( ps_dec -> u4_output_present && ( ps_dec -> u4_fmt_conv_cur_row < ps_dec -> s_disp_frame_info . u4_y_ht ) ) { ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht - ps_dec -> u4_fmt_conv_cur_row ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; } if ( ps_dec -> i4_decode_header == 1 && ( ps_dec -> i4_header_decoded & 1 ) == 1 ) { ps_dec_op -> u4_progressive_frame_flag = 1 ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { if ( ( 0 == ps_dec -> ps_sps -> u1_frame_mbs_only_flag ) && ( 0 == ps_dec -> ps_sps -> u1_mb_aff_flag ) ) ps_dec_op -> u4_progressive_frame_flag = 0 ; } } DATA_SYNC ( ) ; H264_DEC_DEBUG_PRINT ( \"The<S2SV_blank>num<S2SV_blank>bytes<S2SV_blank>consumed:<S2SV_blank>%d\\\\n\" , ps_dec_op -> u4_num_bytes_consumed ) ; return api_ret_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u4_first_slice_in_pic = 2 ; ps_dec -> u1_first_pb_nal_in_pic = 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10145\n\n```\nCWE-189 static Image * ExtractPostscript ( Image * image , const ImageInfo * image_info , MagickOffsetType PS_Offset , ssize_t PS_Size , ExceptionInfo * exception ) { char postscript_file [ MaxTextExtent ] ; const MagicInfo * magic_info ; FILE * ps_file ; ImageInfo * clone_info ; Image * image2 ; unsigned char magick [ 2 * MaxTextExtent ] ; if ( ( clone_info = CloneImageInfo ( image_info ) ) == NULL ) return ( image ) ; clone_info -> blob = ( void * ) NULL ; clone_info -> length = 0 ; ( void ) AcquireUniqueFilename ( postscript_file ) ; ps_file = fopen_utf8 ( postscript_file , \"wb\" ) ; if ( ps_file == ( FILE * ) NULL ) goto FINISH ; ( void ) SeekBlob ( image , PS_Offset , SEEK_SET ) ; ( void ) ReadBlob ( image , 2 * MaxTextExtent , magick ) ; ( void ) SeekBlob ( image , PS_Offset , SEEK_SET ) ; while ( PS_Size -- > 0 ) { ( void ) fputc ( ReadBlobByte ( image ) , ps_file ) ; } ( void ) fclose ( ps_file ) ; magic_info = GetMagicInfo ( magick , 2 * MaxTextExtent , exception ) ; if ( magic_info == ( const MagicInfo * ) NULL ) goto FINISH_UNL ; if ( exception -> severity != UndefinedException ) goto FINISH_UNL ; if ( magic_info -> name == ( char * ) NULL ) goto FINISH_UNL ; <S2SV_StartBug> ( void ) strncpy ( clone_info -> magick , magic_info -> name , MaxTextExtent ) ; <S2SV_EndBug> FormatLocaleString ( clone_info -> filename , MaxTextExtent , \"%s\" , postscript_file ) ; image2 = ReadImage ( clone_info , exception ) ; if ( ! image2 ) goto FINISH_UNL ; ( void ) CopyMagickString ( image2 -> filename , image -> filename , MaxTextExtent ) ; ( void ) CopyMagickString ( image2 -> magick_filename , image -> magick_filename , MaxTextExtent ) ; ( void ) CopyMagickString ( image2 -> magick , image -> magick , MaxTextExtent ) ; image2 -> depth = image -> depth ; DestroyBlob ( image2 ) ; image2 -> blob = ReferenceBlob ( image -> blob ) ; if ( ( image -> rows == 0 ) || ( image -> columns == 0 ) ) DeleteImageFromList ( & image ) ; AppendImageToList ( & image , image2 ) ; FINISH_UNL : ( void ) RelinquishUniqueFileResource ( postscript_file ) ; FINISH : DestroyImageInfo ( clone_info ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> name , MaxTextExtent - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10129\n\n```\nCWE-476 static int add_push_report_sideband_pkt ( git_push * push , git_pkt_data * data_pkt , git_buf * data_pkt_buf ) { git_pkt * pkt ; const char * line , * line_end ; size_t line_len ; int error ; int reading_from_buf = data_pkt_buf -> size > 0 ; if ( reading_from_buf ) { git_buf_put ( data_pkt_buf , data_pkt -> data , data_pkt -> len ) ; line = data_pkt_buf -> ptr ; line_len = data_pkt_buf -> size ; } else { line = data_pkt -> data ; line_len = data_pkt -> len ; } while ( line_len > 0 ) { error = git_pkt_parse_line ( & pkt , line , & line_end , line_len ) ; if ( error == GIT_EBUFS ) { if ( ! reading_from_buf ) git_buf_put ( data_pkt_buf , line , line_len ) ; error = 0 ; goto done ; } else if ( error < 0 ) goto done ; line_len -= ( line_end - line ) ; line = line_end ; <S2SV_StartBug> if ( pkt == NULL ) <S2SV_EndBug> continue ; error = add_push_report_pkt ( push , pkt ) ; git_pkt_free ( pkt ) ; if ( error < 0 && error != GIT_ITEROVER ) goto done ; } error = 0 ; done : if ( reading_from_buf ) git_buf_consume ( data_pkt_buf , line_end ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = line_end ; <S2SV_ModEnd> error = add_push_report_pkt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5352\n\n```\nCWE-000 int main ( int argc , char * argv [ ] ) { OM_uint32 minor , major ; gss_ctx_id_t context ; gss_union_ctx_id_desc uctx ; krb5_gss_ctx_id_rec kgctx ; krb5_key k1 , k2 ; krb5_keyblock kb1 , kb2 ; gss_buffer_desc in , out ; unsigned char k1buf [ 32 ] , k2buf [ 32 ] , outbuf [ 44 ] ; size_t i ; context = ( gss_ctx_id_t ) & uctx ; uctx . mech_type = & mech_krb5 ; uctx . internal_ctx_id = ( gss_ctx_id_t ) & kgctx ; kgctx . k5_context = NULL ; <S2SV_StartBug> kgctx . have_acceptor_subkey = 1 ; <S2SV_EndBug> kb1 . contents = k1buf ; kb2 . contents = k2buf ; for ( i = 0 ; i < sizeof ( tests ) / sizeof ( * tests ) ; i ++ ) { kb1 . enctype = tests [ i ] . enctype ; kb1 . length = fromhex ( tests [ i ] . key1 , k1buf ) ; check_k5err ( NULL , \"create_key\" , krb5_k_create_key ( NULL , & kb1 , & k1 ) ) ; kgctx . subkey = k1 ; kb2 . enctype = tests [ i ] . enctype ; kb2 . length = fromhex ( tests [ i ] . key2 , k2buf ) ; check_k5err ( NULL , \"create_key\" , krb5_k_create_key ( NULL , & kb2 , & k2 ) ) ; kgctx . acceptor_subkey = k2 ; in . length = 0 ; in . value = NULL ; major = gss_pseudo_random ( & minor , context , GSS_C_PRF_KEY_PARTIAL , & in , 44 , & out ) ; check_gsserr ( \"gss_pseudo_random\" , major , minor ) ; ( void ) fromhex ( tests [ i ] . out1 , outbuf ) ; assert ( out . length == 44 && memcmp ( out . value , outbuf , 44 ) == 0 ) ; ( void ) gss_release_buffer ( & minor , & out ) ; in . length = strlen ( inputstr ) ; in . value = ( char * ) inputstr ; major = gss_pseudo_random ( & minor , context , GSS_C_PRF_KEY_FULL , & in , 44 , & out ) ; check_gsserr ( \"gss_pseudo_random\" , major , minor ) ; ( void ) fromhex ( tests [ i ] . out2 , outbuf ) ; assert ( out . length == 44 && memcmp ( out . value , outbuf , 44 ) == 0 ) ; ( void ) gss_release_buffer ( & minor , & out ) ; major = gss_pseudo_random ( & minor , context , GSS_C_PRF_KEY_FULL , & in , 0 , & out ) ; check_gsserr ( \"gss_pseudo_random\" , major , minor ) ; assert ( out . length == 0 ) ; ( void ) gss_release_buffer ( & minor , & out ) ; krb5_k_free_key ( NULL , k1 ) ; krb5_k_free_key ( NULL , k2 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; kgctx . established = 1 ; kgctx .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int hci_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct sk_buff * skb ; int copied , err ; BT_DBG ( \"sock<S2SV_blank>%p,<S2SV_blank>sk<S2SV_blank>%p\" , sock , sk ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; if ( sk -> sk_state == BT_CLOSED ) return 0 ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) return err ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( skb ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; switch ( hci_pi ( sk ) -> channel ) { case HCI_CHANNEL_RAW : hci_sock_cmsg ( sk , msg , skb ) ; break ; case HCI_CHANNEL_USER : case HCI_CHANNEL_CONTROL : case HCI_CHANNEL_MONITOR : sock_recv_timestamp ( msg , sk , skb ) ; break ; } skb_free_datagram ( sk , skb ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return err ; <S2SV_ModEnd> copied = skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18079\n\n```\nCWE-476 static int i8042_start ( struct serio * serio ) { struct i8042_port * port = serio -> port_data ; <S2SV_StartBug> port -> exists = true ; <S2SV_EndBug> <S2SV_StartBug> mb ( ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> port_data ; spin_lock_irq ( & i8042_lock ) ; <S2SV_ModStart> = true ; spin_unlock_irq ( & i8042_lock <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2123\n\n```\nCWE-264 int cap_bprm_set_creds ( struct linux_binprm * bprm ) { const struct cred * old = current_cred ( ) ; struct cred * new = bprm -> cred ; bool effective , has_cap = false ; int ret ; effective = false ; ret = get_file_caps ( bprm , & effective , & has_cap ) ; if ( ret < 0 ) return ret ; if ( ! issecure ( SECURE_NOROOT ) ) { if ( has_cap && new -> uid != 0 && new -> euid == 0 ) { warn_setuid_and_fcaps_mixed ( bprm -> filename ) ; goto skip ; } if ( new -> euid == 0 || new -> uid == 0 ) { new -> cap_permitted = cap_combine ( old -> cap_bset , old -> cap_inheritable ) ; } if ( new -> euid == 0 ) effective = true ; } skip : <S2SV_StartBug> if ( ( new -> euid != old -> uid || <S2SV_EndBug> new -> egid != old -> gid || ! cap_issubset ( new -> cap_permitted , old -> cap_permitted ) ) && bprm -> unsafe & ~ LSM_UNSAFE_PTRACE_CAP ) { if ( ! capable ( CAP_SETUID ) ) { new -> euid = new -> uid ; new -> egid = new -> gid ; } new -> cap_permitted = cap_intersect ( new -> cap_permitted , old -> cap_permitted ) ; } new -> suid = new -> fsuid = new -> euid ; new -> sgid = new -> fsgid = new -> egid ; if ( effective ) new -> cap_effective = new -> cap_permitted ; else cap_clear ( new -> cap_effective ) ; bprm -> cap_effective = effective ; if ( ! cap_isclear ( new -> cap_effective ) ) { if ( ! cap_issubset ( CAP_FULL_SET , new -> cap_effective ) || new -> euid != 0 || new -> uid != 0 || issecure ( SECURE_NOROOT ) ) { ret = audit_log_bprm_fcaps ( bprm , new , old ) ; if ( ret < 0 ) return ret ; } } new -> securebits &= ~ issecure_mask ( SECURE_KEEP_CAPS ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( ! cap_issubset ( new -> cap_permitted , old -> cap_permitted ) ) bprm -> per_clear |= PER_CLEAR_ON_SETID ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_golden_frame_stats ( VP9_COMP * cpi ) { RATE_CONTROL * const rc = & cpi -> rc ; if ( cpi -> refresh_golden_frame ) { rc -> frames_since_golden = 0 ; <S2SV_StartBug> if ( ! rc -> source_alt_ref_pending ) <S2SV_EndBug> <S2SV_StartBug> rc -> source_alt_ref_active = 0 ; <S2SV_EndBug> if ( rc -> frames_till_gf_update_due > 0 ) rc -> frames_till_gf_update_due -- ; } else if ( ! cpi -> refresh_alt_ref_frame ) { if ( rc -> frames_till_gf_update_due > 0 ) rc -> frames_till_gf_update_due -- ; rc -> frames_since_golden ++ ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> source_alt_ref_pending ) { <S2SV_ModStart> = 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0058\n\n```\nCWE-399 <S2SV_StartBug> static void kiocb_batch_free ( struct kiocb_batch * batch ) <S2SV_EndBug> { <S2SV_StartBug> struct kiocb * req , * n ; <S2SV_EndBug> list_for_each_entry_safe ( req , n , & batch -> head , ki_batch ) { list_del ( & req -> ki_batch ) ; <S2SV_StartBug> kmem_cache_free ( kiocb_cachep , req ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void kiocb_batch_free ( struct kioctx * ctx , <S2SV_ModStart> , * n ; if ( list_empty ( & batch -> head ) ) return ; spin_lock_irq ( & ctx -> ctx_lock ) <S2SV_ModStart> ki_batch ) ; list_del ( & req -> ki_list ) ; <S2SV_ModStart> req ) ; ctx -> reqs_active -- ; } spin_unlock_irq ( & ctx -> ctx_lock ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3646\n\n```\nCWE-264 static bool nested_vmx_exit_handled ( struct kvm_vcpu * vcpu ) { u32 intr_info = vmcs_read32 ( VM_EXIT_INTR_INFO ) ; struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; struct vmcs12 * vmcs12 = get_vmcs12 ( vcpu ) ; u32 exit_reason = vmx -> exit_reason ; trace_kvm_nested_vmexit ( kvm_rip_read ( vcpu ) , exit_reason , vmcs_readl ( EXIT_QUALIFICATION ) , vmx -> idt_vectoring_info , intr_info , vmcs_read32 ( VM_EXIT_INTR_ERROR_CODE ) , KVM_ISA_VMX ) ; if ( vmx -> nested . nested_run_pending ) return 0 ; if ( unlikely ( vmx -> fail ) ) { pr_info_ratelimited ( \"%s<S2SV_blank>failed<S2SV_blank>vm<S2SV_blank>entry<S2SV_blank>%x\\\\n\" , __func__ , vmcs_read32 ( VM_INSTRUCTION_ERROR ) ) ; return 1 ; } switch ( exit_reason ) { case EXIT_REASON_EXCEPTION_NMI : if ( ! is_exception ( intr_info ) ) return 0 ; else if ( is_page_fault ( intr_info ) ) return enable_ept ; else if ( is_no_device ( intr_info ) && ! ( vmcs12 -> guest_cr0 & X86_CR0_TS ) ) return 0 ; return vmcs12 -> exception_bitmap & ( 1u << ( intr_info & INTR_INFO_VECTOR_MASK ) ) ; case EXIT_REASON_EXTERNAL_INTERRUPT : return 0 ; case EXIT_REASON_TRIPLE_FAULT : return 1 ; case EXIT_REASON_PENDING_INTERRUPT : return nested_cpu_has ( vmcs12 , CPU_BASED_VIRTUAL_INTR_PENDING ) ; case EXIT_REASON_NMI_WINDOW : return nested_cpu_has ( vmcs12 , CPU_BASED_VIRTUAL_NMI_PENDING ) ; case EXIT_REASON_TASK_SWITCH : return 1 ; case EXIT_REASON_CPUID : if ( kvm_register_read ( vcpu , VCPU_REGS_RAX ) == 0xa ) return 0 ; return 1 ; case EXIT_REASON_HLT : return nested_cpu_has ( vmcs12 , CPU_BASED_HLT_EXITING ) ; case EXIT_REASON_INVD : return 1 ; case EXIT_REASON_INVLPG : return nested_cpu_has ( vmcs12 , CPU_BASED_INVLPG_EXITING ) ; case EXIT_REASON_RDPMC : return nested_cpu_has ( vmcs12 , CPU_BASED_RDPMC_EXITING ) ; case EXIT_REASON_RDTSC : return nested_cpu_has ( vmcs12 , CPU_BASED_RDTSC_EXITING ) ; case EXIT_REASON_VMCALL : case EXIT_REASON_VMCLEAR : case EXIT_REASON_VMLAUNCH : case EXIT_REASON_VMPTRLD : case EXIT_REASON_VMPTRST : case EXIT_REASON_VMREAD : case EXIT_REASON_VMRESUME : case EXIT_REASON_VMWRITE : case EXIT_REASON_VMOFF : case EXIT_REASON_VMON : <S2SV_StartBug> case EXIT_REASON_INVEPT : <S2SV_EndBug> return 1 ; case EXIT_REASON_CR_ACCESS : return nested_vmx_exit_handled_cr ( vcpu , vmcs12 ) ; case EXIT_REASON_DR_ACCESS : return nested_cpu_has ( vmcs12 , CPU_BASED_MOV_DR_EXITING ) ; case EXIT_REASON_IO_INSTRUCTION : return nested_vmx_exit_handled_io ( vcpu , vmcs12 ) ; case EXIT_REASON_MSR_READ : case EXIT_REASON_MSR_WRITE : return nested_vmx_exit_handled_msr ( vcpu , vmcs12 , exit_reason ) ; case EXIT_REASON_INVALID_STATE : return 1 ; case EXIT_REASON_MWAIT_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_MWAIT_EXITING ) ; case EXIT_REASON_MONITOR_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_MONITOR_EXITING ) ; case EXIT_REASON_PAUSE_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_PAUSE_EXITING ) || nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_PAUSE_LOOP_EXITING ) ; case EXIT_REASON_MCE_DURING_VMENTRY : return 0 ; case EXIT_REASON_TPR_BELOW_THRESHOLD : return nested_cpu_has ( vmcs12 , CPU_BASED_TPR_SHADOW ) ; case EXIT_REASON_APIC_ACCESS : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES ) ; case EXIT_REASON_EPT_VIOLATION : return 0 ; case EXIT_REASON_EPT_MISCONFIG : return 0 ; case EXIT_REASON_WBINVD : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_WBINVD_EXITING ) ; case EXIT_REASON_XSETBV : return 1 ; default : return 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case EXIT_REASON_INVEPT : case EXIT_REASON_INVVPID :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3232\n\n```\nCWE-200 static int nr_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct sockaddr_ax25 * sax = ( struct sockaddr_ax25 * ) msg -> msg_name ; size_t copied ; struct sk_buff * skb ; int er ; lock_sock ( sk ) ; if ( sk -> sk_state != TCP_ESTABLISHED ) { release_sock ( sk ) ; return - ENOTCONN ; } if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) { release_sock ( sk ) ; return er ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } er = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( er < 0 ) { skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return er ; } if ( sax != NULL ) { <S2SV_StartBug> sax -> sax25_family = AF_NETROM ; <S2SV_EndBug> skb_copy_from_linear_data_offset ( skb , 7 , sax -> sax25_call . ax25_call , AX25_ADDR_LEN ) ; } msg -> msg_namelen = sizeof ( * sax ) ; skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { memset ( sax , 0 , sizeof ( sax ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9754\n\n```\nCWE-190 int ring_buffer_resize ( struct ring_buffer * buffer , unsigned long size , int cpu_id ) { struct ring_buffer_per_cpu * cpu_buffer ; unsigned long nr_pages ; int cpu , err = 0 ; if ( ! buffer ) return size ; if ( cpu_id != RING_BUFFER_ALL_CPUS && ! cpumask_test_cpu ( cpu_id , buffer -> cpumask ) ) return size ; <S2SV_StartBug> size = DIV_ROUND_UP ( size , BUF_PAGE_SIZE ) ; <S2SV_EndBug> size *= BUF_PAGE_SIZE ; if ( size < BUF_PAGE_SIZE * 2 ) size = BUF_PAGE_SIZE * 2 ; nr_pages = DIV_ROUND_UP ( size , BUF_PAGE_SIZE ) ; if ( atomic_read ( & buffer -> resize_disabled ) ) return - EBUSY ; mutex_lock ( & buffer -> mutex ) ; if ( cpu_id == RING_BUFFER_ALL_CPUS ) { for_each_buffer_cpu ( buffer , cpu ) { cpu_buffer = buffer -> buffers [ cpu ] ; cpu_buffer -> nr_pages_to_update = nr_pages - cpu_buffer -> nr_pages ; if ( cpu_buffer -> nr_pages_to_update <= 0 ) continue ; INIT_LIST_HEAD ( & cpu_buffer -> new_pages ) ; if ( __rb_allocate_pages ( cpu_buffer -> nr_pages_to_update , & cpu_buffer -> new_pages , cpu ) ) { err = - ENOMEM ; goto out_err ; } } get_online_cpus ( ) ; for_each_buffer_cpu ( buffer , cpu ) { cpu_buffer = buffer -> buffers [ cpu ] ; if ( ! cpu_buffer -> nr_pages_to_update ) continue ; if ( ! cpu_online ( cpu ) ) { rb_update_pages ( cpu_buffer ) ; cpu_buffer -> nr_pages_to_update = 0 ; } else { schedule_work_on ( cpu , & cpu_buffer -> update_pages_work ) ; } } for_each_buffer_cpu ( buffer , cpu ) { cpu_buffer = buffer -> buffers [ cpu ] ; if ( ! cpu_buffer -> nr_pages_to_update ) continue ; if ( cpu_online ( cpu ) ) wait_for_completion ( & cpu_buffer -> update_done ) ; cpu_buffer -> nr_pages_to_update = 0 ; } put_online_cpus ( ) ; } else { if ( ! cpumask_test_cpu ( cpu_id , buffer -> cpumask ) ) goto out ; cpu_buffer = buffer -> buffers [ cpu_id ] ; if ( nr_pages == cpu_buffer -> nr_pages ) goto out ; cpu_buffer -> nr_pages_to_update = nr_pages - cpu_buffer -> nr_pages ; INIT_LIST_HEAD ( & cpu_buffer -> new_pages ) ; if ( cpu_buffer -> nr_pages_to_update > 0 && __rb_allocate_pages ( cpu_buffer -> nr_pages_to_update , & cpu_buffer -> new_pages , cpu_id ) ) { err = - ENOMEM ; goto out_err ; } get_online_cpus ( ) ; if ( ! cpu_online ( cpu_id ) ) rb_update_pages ( cpu_buffer ) ; else { schedule_work_on ( cpu_id , & cpu_buffer -> update_pages_work ) ; wait_for_completion ( & cpu_buffer -> update_done ) ; } cpu_buffer -> nr_pages_to_update = 0 ; put_online_cpus ( ) ; } out : if ( atomic_read ( & buffer -> record_disabled ) ) { atomic_inc ( & buffer -> record_disabled ) ; synchronize_sched ( ) ; for_each_buffer_cpu ( buffer , cpu ) { cpu_buffer = buffer -> buffers [ cpu ] ; rb_check_pages ( cpu_buffer ) ; } atomic_dec ( & buffer -> record_disabled ) ; } mutex_unlock ( & buffer -> mutex ) ; return size ; out_err : for_each_buffer_cpu ( buffer , cpu ) { struct buffer_page * bpage , * tmp ; cpu_buffer = buffer -> buffers [ cpu ] ; cpu_buffer -> nr_pages_to_update = 0 ; if ( list_empty ( & cpu_buffer -> new_pages ) ) continue ; list_for_each_entry_safe ( bpage , tmp , & cpu_buffer -> new_pages , list ) { list_del_init ( & bpage -> list ) ; free_buffer_page ( bpage ) ; } } mutex_unlock ( & buffer -> mutex ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return size ; nr_pages = DIV_ROUND_UP ( size , BUF_PAGE_SIZE ) ; if ( nr_pages < 2 ) nr_pages = 2 ; size = nr_pages * BUF_PAGE_SIZE <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int jas_memdump ( FILE * out , void * data , size_t len ) { size_t i ; size_t j ; <S2SV_StartBug> uchar * dp ; <S2SV_EndBug> dp = data ; for ( i = 0 ; i < len ; i += 16 ) { fprintf ( out , \"%04zx:\" , i ) ; for ( j = 0 ; j < 16 ; ++ j ) { if ( i + j < len ) { fprintf ( out , \"<S2SV_blank>%02x\" , dp [ i + j ] ) ; } } fprintf ( out , \"\\\\n\" ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t j ; jas_uchar <S2SV_ModEnd> * dp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 void macvlan_common_setup ( struct net_device * dev ) { ether_setup ( dev ) ; <S2SV_StartBug> dev -> priv_flags &= ~ IFF_XMIT_DST_RELEASE ; <S2SV_EndBug> dev -> netdev_ops = & macvlan_netdev_ops ; dev -> destructor = free_netdev ; dev -> header_ops = & macvlan_hard_header_ops , dev -> ethtool_ops = & macvlan_ethtool_ops ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> priv_flags &= ~ ( IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING ) <S2SV_ModEnd> ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2094\n\n```\nCWE-189 static int perf_swevent_init ( struct perf_event * event ) { <S2SV_StartBug> int event_id = event -> attr . config ; <S2SV_EndBug> if ( event -> attr . type != PERF_TYPE_SOFTWARE ) return - ENOENT ; if ( has_branch_stack ( event ) ) return - EOPNOTSUPP ; switch ( event_id ) { case PERF_COUNT_SW_CPU_CLOCK : case PERF_COUNT_SW_TASK_CLOCK : return - ENOENT ; default : break ; } if ( event_id >= PERF_COUNT_SW_MAX ) return - ENOENT ; if ( ! event -> parent ) { int err ; err = swevent_hlist_get ( event ) ; if ( err ) return err ; static_key_slow_inc ( & perf_swevent_enabled [ event_id ] ) ; event -> destroy = sw_perf_event_destroy ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> event ) { u64 <S2SV_ModEnd> event_id = event\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static void rdpsnddbg_process ( STREAM s ) { unsigned int pkglen ; static char * rest = NULL ; <S2SV_StartBug> char * buf ; <S2SV_EndBug> pkglen = s -> end - s -> p ; buf = ( char * ) xmalloc ( pkglen + 1 ) ; STRNCPY ( buf , ( char * ) s -> p , pkglen + 1 ) ; str_handle_lines ( buf , & rest , rdpsnddbg_line_handler , NULL ) ; xfree ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * buf ; if ( ! s_check ( s ) ) { rdp_protocol_error ( \"rdpsnddbg_process(),<S2SV_blank>stream<S2SV_blank>is<S2SV_blank>in<S2SV_blank>unstable<S2SV_blank>state\" , s ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0037\n\n```\nCWE-200 int raptor_turtle_writer_get_option ( raptor_turtle_writer * turtle_writer , raptor_option option ) { int result = - 1 ; switch ( option ) { case RAPTOR_OPTION_WRITER_AUTO_INDENT : result = TURTLE_WRITER_AUTO_INDENT ( turtle_writer ) ; break ; case RAPTOR_OPTION_WRITER_INDENT_WIDTH : result = turtle_writer -> indent ; break ; case RAPTOR_OPTION_WRITER_AUTO_EMPTY : case RAPTOR_OPTION_WRITER_XML_VERSION : case RAPTOR_OPTION_WRITER_XML_DECLARATION : case RAPTOR_OPTION_SCANNING : case RAPTOR_OPTION_ALLOW_NON_NS_ATTRIBUTES : case RAPTOR_OPTION_ALLOW_OTHER_PARSETYPES : case RAPTOR_OPTION_ALLOW_BAGID : case RAPTOR_OPTION_ALLOW_RDF_TYPE_RDF_LIST : case RAPTOR_OPTION_NORMALIZE_LANGUAGE : case RAPTOR_OPTION_NON_NFC_FATAL : case RAPTOR_OPTION_WARN_OTHER_PARSETYPES : case RAPTOR_OPTION_CHECK_RDF_ID : case RAPTOR_OPTION_HTML_TAG_SOUP : case RAPTOR_OPTION_MICROFORMATS : case RAPTOR_OPTION_HTML_LINK : case RAPTOR_OPTION_WWW_TIMEOUT : case RAPTOR_OPTION_STRICT : case RAPTOR_OPTION_NO_NET : case RAPTOR_OPTION_NO_FILE : <S2SV_StartBug> case RAPTOR_OPTION_RELATIVE_URIS : <S2SV_EndBug> case RAPTOR_OPTION_RESOURCE_BORDER : case RAPTOR_OPTION_LITERAL_BORDER : case RAPTOR_OPTION_BNODE_BORDER : case RAPTOR_OPTION_RESOURCE_FILL : case RAPTOR_OPTION_LITERAL_FILL : case RAPTOR_OPTION_BNODE_FILL : case RAPTOR_OPTION_JSON_CALLBACK : case RAPTOR_OPTION_JSON_EXTRA_DATA : case RAPTOR_OPTION_RSS_TRIPLES : case RAPTOR_OPTION_ATOM_ENTRY_URI : case RAPTOR_OPTION_PREFIX_ELEMENTS : case RAPTOR_OPTION_WRITE_BASE_URI : case RAPTOR_OPTION_WWW_HTTP_CACHE_CONTROL : case RAPTOR_OPTION_WWW_HTTP_USER_AGENT : case RAPTOR_OPTION_WWW_CERT_FILENAME : case RAPTOR_OPTION_WWW_CERT_TYPE : case RAPTOR_OPTION_WWW_CERT_PASSPHRASE : case RAPTOR_OPTION_WWW_SSL_VERIFY_PEER : case RAPTOR_OPTION_WWW_SSL_VERIFY_HOST : default : break ; } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RAPTOR_OPTION_NO_FILE : case RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES : case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13300\n\n```\nCWE-119 <S2SV_StartBug> static PixelChannels * * AcquirePixelThreadSet ( const Image * image ) <S2SV_EndBug> { PixelChannels * * pixels ; register ssize_t i ; size_t <S2SV_StartBug> number_threads ; <S2SV_EndBug> number_threads = ( size_t ) GetMagickResourceLimit ( ThreadResource ) ; pixels = ( PixelChannels * * ) AcquireQuantumMemory ( number_threads , sizeof ( * pixels ) ) ; if ( pixels == ( PixelChannels * * ) NULL ) return ( ( PixelChannels * * ) NULL ) ; ( void ) memset ( pixels , 0 , number_threads * sizeof ( * pixels ) ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) number_threads ; i ++ ) <S2SV_EndBug> { register ssize_t j ; <S2SV_StartBug> pixels [ i ] = ( PixelChannels * ) AcquireQuantumMemory ( image -> columns , <S2SV_EndBug> sizeof ( * * pixels ) ) ; if ( pixels [ i ] == ( PixelChannels * ) NULL ) return ( DestroyPixelThreadSet ( pixels ) ) ; <S2SV_StartBug> for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) <S2SV_EndBug> { register ssize_t k ; for ( k = 0 ; k < MaxPixelChannels ; k ++ ) pixels [ i ] [ j ] . channel [ k ] = 0.0 ; } } return ( pixels ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const Image * images ) { const Image * next ; <S2SV_ModEnd> PixelChannels * * <S2SV_ModStart> i ; size_t columns , <S2SV_ModStart> ) ) ; columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; <S2SV_ModStart> ) AcquireQuantumMemory ( columns , <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> ( ssize_t ) <S2SV_ModEnd> columns ; j\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4254\n\n```\nCWE-20 static int validate_event ( struct pmu_hw_events * hw_events , struct perf_event * event ) { struct arm_pmu * armpmu = to_arm_pmu ( event -> pmu ) ; <S2SV_StartBug> struct pmu * leader_pmu = event -> group_leader -> pmu ; <S2SV_EndBug> if ( event -> pmu != leader_pmu || event -> state < PERF_EVENT_STATE_OFF ) return 1 ; if ( event -> state == PERF_EVENT_STATE_OFF && ! event -> attr . enable_on_exec ) return 1 ; return armpmu -> get_event_idx ( hw_events , event ) >= 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> group_leader -> pmu ; if ( is_software_event ( event ) ) return 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int vp9_decode_frame ( VP9Decoder * pbi , <S2SV_EndBug> const uint8_t * data , const uint8_t * data_end , const uint8_t * * p_data_end ) { VP9_COMMON * const cm = & pbi -> common ; MACROBLOCKD * const xd = & pbi -> mb ; struct vp9_read_bit_buffer rb = { data , data_end , 0 , cm , error_handler } ; <S2SV_StartBug> const size_t first_partition_size = read_uncompressed_header ( pbi , & rb ) ; <S2SV_EndBug> const int keyframe = cm -> frame_type == KEY_FRAME ; const int tile_rows = 1 << cm -> log2_tile_rows ; const int tile_cols = 1 << cm -> log2_tile_cols ; YV12_BUFFER_CONFIG * const new_fb = get_frame_new_buffer ( cm ) ; xd -> cur_buf = new_fb ; if ( ! first_partition_size ) { <S2SV_StartBug> * p_data_end = data + 1 ; <S2SV_EndBug> return 0 ; } if ( ! pbi -> decoded_key_frame && ! keyframe ) return - 1 ; data += vp9_rb_bytes_read ( & rb ) ; if ( ! read_is_valid ( data , first_partition_size , data_end ) ) vpx_internal_error ( & cm -> error , VPX_CODEC_CORRUPT_FRAME , \"Truncated<S2SV_blank>packet<S2SV_blank>or<S2SV_blank>corrupt<S2SV_blank>header<S2SV_blank>length\" ) ; <S2SV_StartBug> pbi -> do_loopfilter_inline = <S2SV_EndBug> <S2SV_StartBug> ( cm -> log2_tile_rows | cm -> log2_tile_cols ) == 0 && cm -> lf . filter_level ; <S2SV_EndBug> if ( pbi -> do_loopfilter_inline && pbi -> lf_worker . data1 == NULL ) { CHECK_MEM_ERROR ( cm , pbi -> lf_worker . data1 , vpx_memalign ( 32 , sizeof ( LFWorkerData ) ) ) ; pbi -> lf_worker . hook = ( VP9WorkerHook ) vp9_loop_filter_worker ; <S2SV_StartBug> if ( pbi -> oxcf . max_threads > 1 && ! vp9_worker_reset ( & pbi -> lf_worker ) ) { <S2SV_EndBug> vpx_internal_error ( & cm -> error , VPX_CODEC_ERROR , \"Loop<S2SV_blank>filter<S2SV_blank>thread<S2SV_blank>creation<S2SV_blank>failed\" ) ; } } init_macroblockd ( cm , & pbi -> mb ) ; cm -> prev_mi = get_prev_mi ( cm ) ; setup_plane_dequants ( cm , xd , cm -> base_qindex ) ; vp9_setup_block_planes ( xd , cm -> subsampling_x , cm -> subsampling_y ) ; cm -> fc = cm -> frame_contexts [ cm -> frame_context_idx ] ; vp9_zero ( cm -> counts ) ; vp9_zero ( xd -> dqcoeff ) ; xd -> corrupted = 0 ; new_fb -> corrupted = read_compressed_header ( pbi , data , first_partition_size ) ; <S2SV_StartBug> if ( pbi -> oxcf . max_threads > 1 && tile_rows == 1 && tile_cols > 1 && <S2SV_EndBug> cm -> frame_parallel_decoding_mode ) { * p_data_end = decode_tiles_mt ( pbi , data + first_partition_size , data_end ) ; <S2SV_StartBug> } else { <S2SV_EndBug> * p_data_end = decode_tiles ( pbi , data + first_partition_size , data_end ) ; } <S2SV_StartBug> new_fb -> corrupted |= xd -> corrupted ; <S2SV_EndBug> if ( ! pbi -> decoded_key_frame ) { if ( keyframe && ! new_fb -> corrupted ) pbi -> decoded_key_frame = 1 ; else vpx_internal_error ( & cm -> error , VPX_CODEC_CORRUPT_FRAME , <S2SV_StartBug> \"A<S2SV_blank>stream<S2SV_blank>must<S2SV_blank>start<S2SV_blank>with<S2SV_blank>a<S2SV_blank>complete<S2SV_blank>key<S2SV_blank>frame\" ) ; <S2SV_EndBug> } if ( ! cm -> error_resilient_mode && ! cm -> frame_parallel_decoding_mode ) { vp9_adapt_coef_probs ( cm ) ; if ( ! frame_is_intra_only ( cm ) ) { vp9_adapt_mode_probs ( cm ) ; vp9_adapt_mv_probs ( cm , cm -> allow_high_precision_mv ) ; } } else { debug_check_frame_counts ( cm ) ; } <S2SV_StartBug> if ( cm -> refresh_frame_context ) <S2SV_EndBug> <S2SV_StartBug> cm -> frame_contexts [ cm -> frame_context_idx ] = cm -> fc ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> void vp9_decode_frame ( VP9Decoder * pbi , const uint8_t * data , const uint8_t * data_end , const uint8_t * * p_data_end ) { VP9_COMMON * const cm = & pbi -> common ; MACROBLOCKD * const xd = & pbi -> mb ; struct vpx_read_bit_buffer rb ; int context_updated = 0 ; uint8_t clear_data [ MAX_VP9_HEADER_SIZE ] <S2SV_ModEnd> ; const size_t <S2SV_ModStart> ( pbi , init_read_bit_buffer ( pbi , & rb , data , data_end , clear_data ) ) <S2SV_ModEnd> ; const int <S2SV_ModStart> = data + ( cm -> profile <= PROFILE_2 ? 1 : 2 ) ; return ; } data += vpx_rb_bytes_read <S2SV_ModEnd> ( & rb <S2SV_ModStart> \"Truncated<S2SV_blank>packet<S2SV_blank>or<S2SV_blank>corrupt<S2SV_blank>header<S2SV_blank>length\" ) ; cm -> use_prev_frame_mvs = ! cm -> error_resilient_mode && cm -> width == cm -> last_width && cm -> height == cm -> last_height && ! cm -> last_intra_only && cm -> last_show_frame && ( cm -> last_frame_type != KEY_FRAME ) ; vp9_setup_block_planes ( xd , cm -> subsampling_x , cm -> subsampling_y ) ; * cm -> fc = cm -> frame_contexts [ cm -> frame_context_idx ] ; if ( ! cm -> fc -> initialized ) vpx_internal_error ( & cm -> error , VPX_CODEC_CORRUPT_FRAME , \"Uninitialized<S2SV_blank>entropy<S2SV_blank>context.\" ) ; vp9_zero ( cm -> counts ) ; xd -> corrupted = 0 ; new_fb -> corrupted = read_compressed_header ( pbi , data , first_partition_size ) ; if ( new_fb -> corrupted ) vpx_internal_error ( & cm -> error , VPX_CODEC_CORRUPT_FRAME , \"Decode<S2SV_blank>failed.<S2SV_blank>Frame<S2SV_blank>data<S2SV_blank>header<S2SV_blank>is<S2SV_blank>corrupted.\" ) ; if ( <S2SV_ModEnd> cm -> lf <S2SV_ModStart> lf . filter_level && ! cm -> skip_loop_filter ) { vp9_loop_filter_frame_init ( cm , cm -> lf . filter_level ) ; } if ( pbi -> frame_parallel_decode && cm -> frame_parallel_decoding_mode ) { VPxWorker * const worker = pbi -> frame_worker_owner ; FrameWorkerData * const frame_worker_data = worker -> data1 ; if ( cm -> refresh_frame_context ) { context_updated = 1 ; cm -> frame_contexts [ cm -> frame_context_idx ] = * cm -> fc ; } vp9_frameworker_lock_stats ( worker ) ; pbi -> cur_buf -> row = - 1 ; pbi -> cur_buf -> col = - 1 ; frame_worker_data -> frame_context_ready = 1 ; vp9_frameworker_signal_stats ( worker ) ; vp9_frameworker_unlock_stats ( worker ) ; } if ( pbi -> <S2SV_ModEnd> max_threads > 1 <S2SV_ModStart> > 1 && <S2SV_ModEnd> tile_rows == 1 <S2SV_ModStart> tile_cols > 1 <S2SV_ModEnd> ) { * <S2SV_ModStart> data_end ) ; if ( ! xd -> corrupted ) { if ( ! cm -> skip_loop_filter ) { vp9_loop_filter_frame_mt ( new_fb , cm , pbi -> mb . plane , cm -> lf . filter_level , 0 , 0 , pbi -> tile_workers , pbi -> num_tile_workers , & pbi -> lf_row_sync ) ; } } else { vpx_internal_error ( & cm -> error , VPX_CODEC_CORRUPT_FRAME , \"Decode<S2SV_blank>failed.<S2SV_blank>Frame<S2SV_blank>data<S2SV_blank>is<S2SV_blank>corrupted.\" ) ; } <S2SV_ModStart> ) ; } if ( ! xd -> corrupted ) { if ( ! cm -> error_resilient_mode && ! cm -> frame_parallel_decoding_mode ) { vp9_adapt_coef_probs ( cm ) ; if ( ! frame_is_intra_only ( cm ) ) { vp9_adapt_mode_probs ( cm ) ; vp9_adapt_mv_probs ( cm , cm -> allow_high_precision_mv ) ; } } else { debug_check_frame_counts ( cm ) ; } } else { <S2SV_ModEnd> vpx_internal_error ( & <S2SV_ModStart> , VPX_CODEC_CORRUPT_FRAME , \"Decode<S2SV_blank>failed.<S2SV_blank>Frame<S2SV_blank>data<S2SV_blank>is<S2SV_blank>corrupted.\" <S2SV_ModEnd> ) ; } <S2SV_ModStart> cm -> refresh_frame_context && ! context_updated <S2SV_ModStart> frame_context_idx ] = * <S2SV_ModStart> -> fc ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7446\n\n```\nCWE-000 static void unix_release_sock ( struct sock * sk , int embrion ) { struct unix_sock * u = unix_sk ( sk ) ; struct path path ; struct sock * skpair ; struct sk_buff * skb ; int state ; unix_remove_socket ( sk ) ; unix_state_lock ( sk ) ; sock_orphan ( sk ) ; sk -> sk_shutdown = SHUTDOWN_MASK ; path = u -> path ; u -> path . dentry = NULL ; u -> path . mnt = NULL ; state = sk -> sk_state ; sk -> sk_state = TCP_CLOSE ; unix_state_unlock ( sk ) ; wake_up_interruptible_all ( & u -> peer_wait ) ; skpair = unix_peer ( sk ) ; if ( skpair != NULL ) { if ( sk -> sk_type == SOCK_STREAM || sk -> sk_type == SOCK_SEQPACKET ) { unix_state_lock ( skpair ) ; skpair -> sk_shutdown = SHUTDOWN_MASK ; if ( ! skb_queue_empty ( & sk -> sk_receive_queue ) || embrion ) skpair -> sk_err = ECONNRESET ; unix_state_unlock ( skpair ) ; skpair -> sk_state_change ( skpair ) ; sk_wake_async ( skpair , SOCK_WAKE_WAITD , POLL_HUP ) ; } <S2SV_StartBug> sock_put ( skpair ) ; <S2SV_EndBug> unix_peer ( sk ) = NULL ; } while ( ( skb = skb_dequeue ( & sk -> sk_receive_queue ) ) != NULL ) { if ( state == TCP_LISTEN ) unix_release_sock ( skb -> sk , 1 ) ; UNIXCB ( skb ) . consumed = skb -> len ; kfree_skb ( skb ) ; } if ( path . dentry ) path_put ( & path ) ; sock_put ( sk ) ; if ( unix_tot_inflight ) unix_gc ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } unix_dgram_peer_wake_disconnect ( sk , skpair ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int tap_if_down ( const char * devname ) { struct ifreq ifr ; int sk ; sk = socket ( AF_INET , SOCK_DGRAM , 0 ) ; if ( sk < 0 ) return - 1 ; memset ( & ifr , 0 , sizeof ( ifr ) ) ; strncpy ( ifr . ifr_name , devname , IF_NAMESIZE - 1 ) ; ifr . ifr_flags &= ~ IFF_UP ; <S2SV_StartBug> ioctl ( sk , SIOCSIFFLAGS , ( caddr_t ) & ifr ) ; <S2SV_EndBug> close ( sk ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ~ IFF_UP ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> ) & ifr )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2496\n\n```\nCWE-189 static struct vm_area_struct * vma_to_resize ( unsigned long addr , unsigned long old_len , unsigned long new_len , unsigned long * p ) { struct mm_struct * mm = current -> mm ; struct vm_area_struct * vma = find_vma ( mm , addr ) ; if ( ! vma || vma -> vm_start > addr ) goto Efault ; if ( is_vm_hugetlb_page ( vma ) ) goto Einval ; if ( old_len > vma -> vm_end - addr ) goto Efault ; <S2SV_StartBug> if ( vma -> vm_flags & ( VM_DONTEXPAND | VM_PFNMAP ) ) { <S2SV_EndBug> if ( new_len > old_len ) goto Efault ; } if ( vma -> vm_flags & VM_LOCKED ) { unsigned long locked , lock_limit ; locked = mm -> locked_vm << PAGE_SHIFT ; lock_limit = rlimit ( RLIMIT_MEMLOCK ) ; locked += new_len - old_len ; if ( locked > lock_limit && ! capable ( CAP_IPC_LOCK ) ) goto Eagain ; } if ( ! may_expand_vm ( mm , ( new_len - old_len ) >> PAGE_SHIFT ) ) goto Enomem ; if ( vma -> vm_flags & VM_ACCOUNT ) { unsigned long charged = ( new_len - old_len ) >> PAGE_SHIFT ; if ( security_vm_enough_memory ( charged ) ) goto Efault ; * p = charged ; } return vma ; Efault : return ERR_PTR ( - EFAULT ) ; Einval : return ERR_PTR ( - EINVAL ) ; Enomem : return ERR_PTR ( - ENOMEM ) ; Eagain : return ERR_PTR ( - EAGAIN ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( new_len > old_len ) { unsigned long pgoff ; if ( <S2SV_ModStart> VM_PFNMAP ) ) goto Efault ; pgoff = ( addr - vma -> vm_start ) >> PAGE_SHIFT ; pgoff += vma -> vm_pgoff ; if ( pgoff + ( new_len >> PAGE_SHIFT ) < pgoff ) goto Einval <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void SetDashSize ( double dashsize , double phase ) { <S2SV_StartBug> if ( dashsize ) outpos += sprintf ( outpos , \"<S2SV_blank>[%12.3f]<S2SV_blank>%12.3f<S2SV_blank>d\" , dashsize , phase ) ; <S2SV_EndBug> <S2SV_StartBug> else outpos += sprintf ( outpos , \"<S2SV_blank>[]<S2SV_blank>0<S2SV_blank>d\" ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( dashsize ) { sprintf ( outputbuffer <S2SV_ModEnd> , \"<S2SV_blank>[%12.3f]<S2SV_blank>%12.3f<S2SV_blank>d\" , <S2SV_ModStart> phase ) ; sendClean ( outputbuffer ) ; } else send ( <S2SV_ModEnd> \"<S2SV_blank>[]<S2SV_blank>0<S2SV_blank>d\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void l2tp_avp_print ( netdissect_options * ndo , const u_char * dat , int length ) { u_int len ; const uint16_t * ptr = ( const uint16_t * ) dat ; uint16_t attr_type ; int hidden = FALSE ; if ( length <= 0 ) { return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; ND_TCHECK ( * ptr ) ; len = EXTRACT_16BITS ( ptr ) & L2TP_AVP_HDR_LEN_MASK ; if ( len < 6 ) goto trunc ; if ( len > ( u_int ) length ) goto trunc ; ND_TCHECK2 ( * ptr , len ) ; if ( EXTRACT_16BITS ( ptr ) & L2TP_AVP_HDR_FLAG_MANDATORY ) { ND_PRINT ( ( ndo , \"*\" ) ) ; } if ( EXTRACT_16BITS ( ptr ) & L2TP_AVP_HDR_FLAG_HIDDEN ) { hidden = TRUE ; ND_PRINT ( ( ndo , \"?\" ) ) ; } ptr ++ ; if ( EXTRACT_16BITS ( ptr ) ) { ND_PRINT ( ( ndo , \"VENDOR%04x:\" , EXTRACT_16BITS ( ptr ) ) ) ; ptr ++ ; ND_PRINT ( ( ndo , \"ATTR%04x\" , EXTRACT_16BITS ( ptr ) ) ) ; ptr ++ ; ND_PRINT ( ( ndo , \"(\" ) ) ; print_octets ( ndo , ( const u_char * ) ptr , len - 6 ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { ptr ++ ; attr_type = EXTRACT_16BITS ( ptr ) ; ptr ++ ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( l2tp_avp2str , \"AVP-#%u\" , attr_type ) ) ) ; ND_PRINT ( ( ndo , \"(\" ) ) ; if ( hidden ) { ND_PRINT ( ( ndo , \"???\" ) ) ; } else { switch ( attr_type ) { case L2TP_AVP_MSGTYPE : <S2SV_StartBug> l2tp_msgtype_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_RESULT_CODE : l2tp_result_code_print ( ndo , ( const u_char * ) ptr , len - 6 ) ; break ; case L2TP_AVP_PROTO_VER : <S2SV_StartBug> l2tp_proto_ver_print ( ndo , ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_FRAMING_CAP : <S2SV_StartBug> l2tp_framing_cap_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_BEARER_CAP : <S2SV_StartBug> l2tp_bearer_cap_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_TIE_BREAKER : <S2SV_StartBug> print_octets ( ndo , ( const u_char * ) ptr , 8 ) ; <S2SV_EndBug> break ; case L2TP_AVP_FIRM_VER : case L2TP_AVP_ASSND_TUN_ID : case L2TP_AVP_RECV_WIN_SIZE : case L2TP_AVP_ASSND_SESS_ID : <S2SV_StartBug> print_16bits_val ( ndo , ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_HOST_NAME : case L2TP_AVP_VENDOR_NAME : case L2TP_AVP_CALLING_NUMBER : case L2TP_AVP_CALLED_NUMBER : case L2TP_AVP_SUB_ADDRESS : case L2TP_AVP_PROXY_AUTH_NAME : case L2TP_AVP_PRIVATE_GRP_ID : print_string ( ndo , ( const u_char * ) ptr , len - 6 ) ; break ; case L2TP_AVP_CHALLENGE : case L2TP_AVP_INI_RECV_LCP : case L2TP_AVP_LAST_SENT_LCP : case L2TP_AVP_LAST_RECV_LCP : case L2TP_AVP_PROXY_AUTH_CHAL : case L2TP_AVP_PROXY_AUTH_RESP : case L2TP_AVP_RANDOM_VECTOR : print_octets ( ndo , ( const u_char * ) ptr , len - 6 ) ; break ; case L2TP_AVP_Q931_CC : l2tp_q931_cc_print ( ndo , ( const u_char * ) ptr , len - 6 ) ; break ; case L2TP_AVP_CHALLENGE_RESP : <S2SV_StartBug> print_octets ( ndo , ( const u_char * ) ptr , 16 ) ; <S2SV_EndBug> break ; case L2TP_AVP_CALL_SER_NUM : case L2TP_AVP_MINIMUM_BPS : case L2TP_AVP_MAXIMUM_BPS : case L2TP_AVP_TX_CONN_SPEED : case L2TP_AVP_PHY_CHANNEL_ID : case L2TP_AVP_RX_CONN_SPEED : <S2SV_StartBug> print_32bits_val ( ndo , ( const uint32_t * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_BEARER_TYPE : <S2SV_StartBug> l2tp_bearer_type_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_FRAMING_TYPE : <S2SV_StartBug> l2tp_framing_type_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_PACKET_PROC_DELAY : l2tp_packet_proc_delay_print ( ndo ) ; break ; case L2TP_AVP_PROXY_AUTH_TYPE : <S2SV_StartBug> l2tp_proxy_auth_type_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_PROXY_AUTH_ID : <S2SV_StartBug> l2tp_proxy_auth_id_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_CALL_ERRORS : <S2SV_StartBug> l2tp_call_errors_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_ACCM : <S2SV_StartBug> l2tp_accm_print ( ndo , ( const u_char * ) ptr ) ; <S2SV_EndBug> break ; case L2TP_AVP_SEQ_REQUIRED : break ; case L2TP_AVP_PPP_DISCON_CC : l2tp_ppp_discon_cc_print ( ndo , ( const u_char * ) ptr , len - 6 ) ; break ; default : break ; } } ND_PRINT ( ( ndo , \")\" ) ) ; } l2tp_avp_print ( ndo , dat + len , length - len ) ; return ; trunc : ND_PRINT ( ( ndo , \"|...\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ) ptr , len - 6 <S2SV_ModStart> ndo , ptr , len - 6 <S2SV_ModStart> * ) ptr , len - 6 <S2SV_ModStart> * ) ptr , len - 6 <S2SV_ModStart> case L2TP_AVP_TIE_BREAKER : if ( len - 6 < 8 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; break ; } <S2SV_ModStart> case L2TP_AVP_ASSND_SESS_ID : if ( len - 6 < 2 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; break ; } <S2SV_ModStart> case L2TP_AVP_CHALLENGE_RESP : if ( len - 6 < 16 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; break ; } <S2SV_ModStart> case L2TP_AVP_RX_CONN_SPEED : if ( len - 6 < 4 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; break ; } <S2SV_ModStart> * ) ptr , len - 6 <S2SV_ModStart> * ) ptr , len - 6 <S2SV_ModStart> * ) ptr , len - 6 <S2SV_ModStart> * ) ptr , len - 6 <S2SV_ModStart> * ) ptr , len - 6 <S2SV_ModStart> * ) ptr , len - 6\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0228\n\n```\nCWE-20 static int lua_websocket_read ( lua_State * L ) { apr_socket_t * sock ; apr_status_t rv ; <S2SV_StartBug> int n = 0 ; <S2SV_EndBug> apr_size_t len = 1 ; apr_size_t plen = 0 ; unsigned short payload_short = 0 ; apr_uint64_t payload_long = 0 ; unsigned char * mask_bytes ; char byte ; int plaintext ; request_rec * r = ap_lua_check_request_rec ( L , 1 ) ; plaintext = ap_lua_ssl_is_https ( r -> connection ) ? 0 : 1 ; mask_bytes = apr_pcalloc ( r -> pool , 4 ) ; <S2SV_StartBug> sock = ap_get_conn_socket ( r -> connection ) ; <S2SV_EndBug> if ( plaintext ) { rv = apr_socket_recv ( sock , & byte , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , & byte , 1 ) ; } if ( rv == APR_SUCCESS ) { unsigned char ubyte , fin , opcode , mask , payload ; ubyte = ( unsigned char ) byte ; fin = ubyte >> ( CHAR_BIT - 1 ) ; opcode = ubyte & 0xf ; if ( plaintext ) { rv = apr_socket_recv ( sock , & byte , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , & byte , 1 ) ; } if ( rv == APR_SUCCESS ) { ubyte = ( unsigned char ) byte ; mask = ubyte >> ( CHAR_BIT - 1 ) ; payload = ubyte & 0x7f ; plen = payload ; if ( payload == 126 ) { len = 2 ; if ( plaintext ) { rv = apr_socket_recv ( sock , ( char * ) & payload_short , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , ( char * ) & payload_short , 2 ) ; } payload_short = ntohs ( payload_short ) ; if ( rv == APR_SUCCESS ) { plen = payload_short ; } else { return 0 ; } } if ( payload == 127 ) { len = 8 ; if ( plaintext ) { rv = apr_socket_recv ( sock , ( char * ) & payload_long , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , ( char * ) & payload_long , 8 ) ; } if ( rv == APR_SUCCESS ) { plen = ap_ntoh64 ( & payload_long ) ; } else { return 0 ; } } ap_log_rerror ( APLOG_MARK , APLOG_DEBUG , 0 , r , \"Websocket:<S2SV_blank>Reading<S2SV_blank>%\" APR_SIZE_T_FMT \"<S2SV_blank>(%s)<S2SV_blank>bytes,<S2SV_blank>masking<S2SV_blank>is<S2SV_blank>%s.<S2SV_blank>%s\" , plen , ( payload >= 126 ) ? \"extra<S2SV_blank>payload\" : \"no<S2SV_blank>extra<S2SV_blank>payload\" , mask ? \"on\" : \"off\" , fin ? \"This<S2SV_blank>is<S2SV_blank>a<S2SV_blank>final<S2SV_blank>frame\" : \"more<S2SV_blank>to<S2SV_blank>follow\" ) ; if ( mask ) { len = 4 ; if ( plaintext ) { rv = apr_socket_recv ( sock , ( char * ) mask_bytes , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , ( char * ) mask_bytes , 4 ) ; } if ( rv != APR_SUCCESS ) { return 0 ; } } if ( plen < ( HUGE_STRING_LEN * 1024 ) && plen > 0 ) { apr_size_t remaining = plen ; apr_size_t received ; apr_off_t at = 0 ; char * buffer = apr_palloc ( r -> pool , plen + 1 ) ; buffer [ plen ] = 0 ; if ( plaintext ) { while ( remaining > 0 ) { received = remaining ; rv = apr_socket_recv ( sock , buffer + at , & received ) ; if ( received > 0 ) { remaining -= received ; at += received ; } } ap_log_rerror ( APLOG_MARK , APLOG_TRACE1 , 0 , r , \"Websocket:<S2SV_blank>Frame<S2SV_blank>contained<S2SV_blank>%\" APR_OFF_T_FMT \"<S2SV_blank>bytes,<S2SV_blank>pushed<S2SV_blank>to<S2SV_blank>Lua<S2SV_blank>stack\" , at ) ; } else { rv = lua_websocket_readbytes ( r -> connection , buffer , remaining ) ; ap_log_rerror ( APLOG_MARK , APLOG_TRACE1 , 0 , r , \"Websocket:<S2SV_blank>SSL<S2SV_blank>Frame<S2SV_blank>contained<S2SV_blank>%\" APR_SIZE_T_FMT \"<S2SV_blank>bytes,<S2SV_blank>\" \"pushed<S2SV_blank>to<S2SV_blank>Lua<S2SV_blank>stack\" , remaining ) ; } if ( mask ) { for ( n = 0 ; n < plen ; n ++ ) { buffer [ n ] ^= mask_bytes [ n % 4 ] ; } } lua_pushlstring ( L , buffer , ( size_t ) plen ) ; lua_pushboolean ( L , fin ) ; return 2 ; } if ( opcode == 0x09 ) { char frame [ 2 ] ; plen = 2 ; frame [ 0 ] = 0x8A ; frame [ 1 ] = 0 ; apr_socket_send ( sock , frame , & plen ) ; <S2SV_StartBug> lua_websocket_read ( L ) ; <S2SV_EndBug> } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rv ; int do_read = 1 ; int <S2SV_ModStart> -> connection ) ; while ( do_read ) { do_read = 0 <S2SV_ModStart> plen ) ; do_read = 1 ; } <S2SV_ModEnd> } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { q = ( const uint8_t * ) ( const void * ) ( ( const char * ) ( const void * ) p + CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ) - 2 * sizeof ( uint32_t ) ; if ( q > e ) { DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%d)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=%x,%d\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; o = 2 ; } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%d\\\\n\" , nelements ) ) ; for ( j = 0 ; j < nelements ; j ++ , i ++ ) { uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; l = 4 + ( uint32_t ) CDF_ROUND ( l , sizeof ( l ) ) ; o += l >> 2 ; <S2SV_StartBug> o4 = o * sizeof ( uint32_t ) ; <S2SV_EndBug> } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; goto out ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> >> 2 ; if ( q + o >= e ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16805\n\n```\nCWE-125 static const ut8 * r_bin_dwarf_parse_attr_value ( const ut8 * obuf , int obuf_len , RBinDwarfAttrSpec * spec , RBinDwarfAttrValue * value , const RBinDwarfCompUnitHdr * hdr , const ut8 * debug_str , size_t debug_str_len ) { const ut8 * buf = obuf ; const ut8 * buf_end = obuf + obuf_len ; size_t j ; <S2SV_StartBug> if ( ! spec || ! value || ! hdr || ! obuf || obuf_len < 0 ) { <S2SV_EndBug> return NULL ; } value -> form = spec -> attr_form ; value -> name = spec -> attr_name ; value -> encoding . block . data = NULL ; value -> encoding . str_struct . string = NULL ; value -> encoding . str_struct . offset = 0 ; switch ( spec -> attr_form ) { case DW_FORM_addr : switch ( hdr -> pointer_size ) { case 1 : value -> encoding . address = READ ( buf , ut8 ) ; break ; case 2 : value -> encoding . address = READ ( buf , ut16 ) ; break ; case 4 : value -> encoding . address = READ ( buf , ut32 ) ; break ; case 8 : value -> encoding . address = READ ( buf , ut64 ) ; break ; default : eprintf ( \"DWARF:<S2SV_blank>Unexpected<S2SV_blank>pointer<S2SV_blank>size:<S2SV_blank>%u\\\\n\" , ( unsigned ) hdr -> pointer_size ) ; return NULL ; } break ; case DW_FORM_block2 : value -> encoding . block . length = READ ( buf , ut16 ) ; if ( value -> encoding . block . length > 0 ) { value -> encoding . block . data = calloc ( sizeof ( ut8 ) , value -> encoding . block . length ) ; for ( j = 0 ; j < value -> encoding . block . length ; j ++ ) { value -> encoding . block . data [ j ] = READ ( buf , ut8 ) ; } } break ; case DW_FORM_block4 : value -> encoding . block . length = READ ( buf , ut32 ) ; if ( value -> encoding . block . length > 0 ) { ut8 * data = calloc ( sizeof ( ut8 ) , value -> encoding . block . length ) ; if ( data ) { for ( j = 0 ; j < value -> encoding . block . length ; j ++ ) { data [ j ] = READ ( buf , ut8 ) ; } } value -> encoding . block . data = data ; } break ; <S2SV_StartBug> case DW_FORM_data2 : <S2SV_EndBug> value -> encoding . data = READ ( buf , ut16 ) ; break ; case DW_FORM_data4 : value -> encoding . data = READ ( buf , ut32 ) ; break ; case DW_FORM_data8 : value -> encoding . data = READ ( buf , ut64 ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case DW_FORM_string : value -> encoding . str_struct . string = * buf ? strdup ( ( const char * ) buf ) : NULL ; buf += ( strlen ( ( const char * ) buf ) + 1 ) ; break ; case DW_FORM_block : buf = r_uleb128 ( buf , buf_end - buf , & value -> encoding . block . length ) ; if ( ! buf ) { return NULL ; } value -> encoding . block . data = calloc ( sizeof ( ut8 ) , value -> encoding . block . length ) ; <S2SV_StartBug> for ( j = 0 ; j < value -> encoding . block . length ; j ++ ) { <S2SV_EndBug> <S2SV_StartBug> value -> encoding . block . data [ j ] = READ ( buf , ut8 ) ; <S2SV_EndBug> } break ; case DW_FORM_block1 : value -> encoding . block . length = READ ( buf , ut8 ) ; value -> encoding . block . data = calloc ( sizeof ( ut8 ) , value -> encoding . block . length + 1 ) ; <S2SV_StartBug> for ( j = 0 ; j < value -> encoding . block . length ; j ++ ) { <S2SV_EndBug> <S2SV_StartBug> value -> encoding . block . data [ j ] = READ ( buf , ut8 ) ; <S2SV_EndBug> } break ; case DW_FORM_flag : value -> encoding . flag = READ ( buf , ut8 ) ; break ; case DW_FORM_sdata : buf = r_leb128 ( buf , & value -> encoding . sdata ) ; break ; case DW_FORM_strp : value -> encoding . str_struct . offset = READ ( buf , ut32 ) ; if ( debug_str && value -> encoding . str_struct . offset < debug_str_len ) { value -> encoding . str_struct . string = strdup ( ( const char * ) ( debug_str + value -> encoding . str_struct . offset ) ) ; } else { value -> encoding . str_struct . string = NULL ; } break ; case DW_FORM_udata : { ut64 ndata = 0 ; const ut8 * data = ( const ut8 * ) & ndata ; buf = r_uleb128 ( buf , R_MIN ( sizeof ( data ) , ( size_t ) ( buf_end - buf ) ) , & ndata ) ; memcpy ( & value -> encoding . data , data , sizeof ( value -> encoding . data ) ) ; value -> encoding . str_struct . string = NULL ; } break ; case DW_FORM_ref_addr : value -> encoding . reference = READ ( buf , ut64 ) ; break ; case DW_FORM_ref1 : value -> encoding . reference = READ ( buf , ut8 ) ; break ; case DW_FORM_ref2 : value -> encoding . reference = READ ( buf , ut16 ) ; break ; case DW_FORM_ref4 : value -> encoding . reference = READ ( buf , ut32 ) ; break ; case DW_FORM_ref8 : value -> encoding . reference = READ ( buf , ut64 ) ; break ; case DW_FORM_data1 : value -> encoding . data = READ ( buf , ut8 ) ; break ; default : eprintf ( \"Unknown<S2SV_blank>DW_FORM<S2SV_blank>0x%02\" PFMT64x \"\\\\n\" , spec -> attr_form ) ; value -> encoding . data = 0 ; return NULL ; } return buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> || obuf_len < 1 <S2SV_ModEnd> ) { return <S2SV_ModStart> } break ; # if 0 <S2SV_ModStart> ; break ; # endif <S2SV_ModStart> length ) ; if ( value -> encoding . block . data ) { <S2SV_ModStart> ut8 ) ; } <S2SV_ModStart> 1 ) ; if ( value -> encoding . block . data ) { <S2SV_ModStart> ut8 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2634\n\n```\nCWE-399 static int dcbnl_getperm_hwaddr ( struct net_device * netdev , struct nlmsghdr * nlh , u32 seq , struct nlattr * * tb , struct sk_buff * skb ) { u8 perm_addr [ MAX_ADDR_LEN ] ; if ( ! netdev -> dcbnl_ops -> getpermhwaddr ) return - EOPNOTSUPP ; <S2SV_StartBug> netdev -> dcbnl_ops -> getpermhwaddr ( netdev , perm_addr ) ; <S2SV_EndBug> return nla_put ( skb , DCB_ATTR_PERM_HWADDR , sizeof ( perm_addr ) , perm_addr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EOPNOTSUPP ; memset ( perm_addr , 0 , sizeof ( perm_addr ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 jp2_box_t * jp2_box_create ( int type ) { jp2_box_t * box ; jp2_boxinfo_t * boxinfo ; <S2SV_StartBug> if ( ! ( box = jas_malloc ( sizeof ( jp2_box_t ) ) ) ) { <S2SV_EndBug> return 0 ; } <S2SV_StartBug> memset ( box , 0 , sizeof ( jp2_box_t ) ) ; <S2SV_EndBug> box -> type = type ; box -> len = 0 ; if ( ! ( boxinfo = jp2_boxinfolookup ( type ) ) ) { return 0 ; } box -> info = boxinfo ; box -> ops = & boxinfo -> ops ; return box ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( box = jp2_box_create0 ( <S2SV_ModEnd> ) ) ) <S2SV_ModStart> 0 ; } <S2SV_ModEnd> box -> type\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1957\n\n```\nCWE-264 static struct mnt_namespace * dup_mnt_ns ( struct mnt_namespace * mnt_ns , struct user_namespace * user_ns , struct fs_struct * fs ) { struct mnt_namespace * new_ns ; struct vfsmount * rootmnt = NULL , * pwdmnt = NULL ; struct mount * p , * q ; struct mount * old = mnt_ns -> root ; struct mount * new ; int copy_flags ; new_ns = alloc_mnt_ns ( user_ns ) ; if ( IS_ERR ( new_ns ) ) return new_ns ; down_write ( & namespace_sem ) ; copy_flags = CL_COPY_ALL | CL_EXPIRE ; if ( user_ns != mnt_ns -> user_ns ) <S2SV_StartBug> copy_flags |= CL_SHARED_TO_SLAVE ; <S2SV_EndBug> new = copy_tree ( old , old -> mnt . mnt_root , copy_flags ) ; if ( IS_ERR ( new ) ) { up_write ( & namespace_sem ) ; free_mnt_ns ( new_ns ) ; return ERR_CAST ( new ) ; } new_ns -> root = new ; br_write_lock ( & vfsmount_lock ) ; list_add_tail ( & new_ns -> list , & new -> mnt_list ) ; br_write_unlock ( & vfsmount_lock ) ; p = old ; q = new ; while ( p ) { q -> mnt_ns = new_ns ; if ( fs ) { if ( & p -> mnt == fs -> root . mnt ) { fs -> root . mnt = mntget ( & q -> mnt ) ; rootmnt = & p -> mnt ; } if ( & p -> mnt == fs -> pwd . mnt ) { fs -> pwd . mnt = mntget ( & q -> mnt ) ; pwdmnt = & p -> mnt ; } } p = next_mnt ( p , old ) ; q = next_mnt ( q , new ) ; } up_write ( & namespace_sem ) ; if ( rootmnt ) mntput ( rootmnt ) ; if ( pwdmnt ) mntput ( pwdmnt ) ; return new_ns ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> copy_flags |= CL_SHARED_TO_SLAVE | CL_UNPRIVILEGED\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-326 static VALUE ossl_cipher_initialize ( VALUE self , VALUE str ) { EVP_CIPHER_CTX * ctx ; const EVP_CIPHER * cipher ; <S2SV_StartBug> char * name ; <S2SV_EndBug> unsigned char dummy_key [ EVP_MAX_KEY_LENGTH ] = { 0 } ; name = StringValueCStr ( str ) ; GetCipherInit ( self , ctx ) ; if ( ctx ) { ossl_raise ( rb_eRuntimeError , \"Cipher<S2SV_blank>already<S2SV_blank>inititalized!\" ) ; } AllocCipher ( self , ctx ) ; if ( ! ( cipher = EVP_get_cipherbyname ( name ) ) ) { ossl_raise ( rb_eRuntimeError , \"unsupported<S2SV_blank>cipher<S2SV_blank>algorithm<S2SV_blank>(%\" PRIsVALUE \")\" , str ) ; } <S2SV_StartBug> if ( EVP_CipherInit_ex ( ctx , cipher , NULL , dummy_key , NULL , - 1 ) != 1 ) <S2SV_EndBug> ossl_raise ( eCipherError , NULL ) ; return self ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * name <S2SV_ModEnd> ; name = <S2SV_ModStart> , NULL , NULL <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7866\n\n```\nCWE-787 static int decode_zbuf ( AVBPrint * bp , const uint8_t * data , const uint8_t * data_end ) { z_stream zstream ; unsigned char * buf ; unsigned buf_size ; int ret ; zstream . zalloc = ff_png_zalloc ; zstream . zfree = ff_png_zfree ; zstream . opaque = NULL ; if ( inflateInit ( & zstream ) != Z_OK ) return AVERROR_EXTERNAL ; zstream . next_in = ( unsigned char * ) data ; zstream . avail_in = data_end - data ; av_bprint_init ( bp , 0 , - 1 ) ; while ( zstream . avail_in > 0 ) { <S2SV_StartBug> av_bprint_get_buffer ( bp , 1 , & buf , & buf_size ) ; <S2SV_EndBug> if ( ! buf_size ) { ret = AVERROR ( ENOMEM ) ; goto fail ; } zstream . next_out = buf ; <S2SV_StartBug> zstream . avail_out = buf_size ; <S2SV_EndBug> ret = inflate ( & zstream , Z_PARTIAL_FLUSH ) ; if ( ret != Z_OK && ret != Z_STREAM_END ) { ret = AVERROR_EXTERNAL ; goto fail ; } bp -> len += zstream . next_out - buf ; if ( ret == Z_STREAM_END ) break ; } inflateEnd ( & zstream ) ; bp -> str [ bp -> len ] = 0 ; return 0 ; fail : inflateEnd ( & zstream ) ; av_bprint_finalize ( bp , NULL ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( bp , 2 , & buf , & buf_size ) ; if ( buf_size < 2 <S2SV_ModEnd> ) { ret <S2SV_ModStart> avail_out = buf_size - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7011\n\n```\nCWE-119 static int read_header ( FFV1Context * f ) { uint8_t state [ CONTEXT_SIZE ] ; int i , j , context_count = - 1 ; RangeCoder * const c = & f -> slice_context [ 0 ] -> c ; memset ( state , 128 , sizeof ( state ) ) ; if ( f -> version < 2 ) { <S2SV_StartBug> unsigned v = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> if ( v >= 2 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>ver01<S2SV_blank>header\\\\n\" , v ) ; return AVERROR_INVALIDDATA ; } f -> version = v ; f -> ac = f -> avctx -> coder_type = get_symbol ( c , state , 0 ) ; if ( f -> ac > 1 ) { for ( i = 1 ; i < 256 ; i ++ ) f -> state_transition [ i ] = get_symbol ( c , state , 1 ) + c -> one_state [ i ] ; } f -> colorspace = get_symbol ( c , state , 0 ) ; if ( f -> version > 0 ) f -> avctx -> bits_per_raw_sample = get_symbol ( c , state , 0 ) ; <S2SV_StartBug> f -> chroma_planes = get_rac ( c , state ) ; <S2SV_EndBug> <S2SV_StartBug> f -> chroma_h_shift = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> f -> chroma_v_shift = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> f -> transparency = get_rac ( c , state ) ; <S2SV_EndBug> f -> plane_count = 2 + f -> transparency ; } if ( f -> colorspace == 0 ) { if ( ! f -> transparency && ! f -> chroma_planes ) { if ( f -> avctx -> bits_per_raw_sample <= 8 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GRAY8 ; else f -> avctx -> pix_fmt = AV_PIX_FMT_GRAY16 ; } else if ( f -> avctx -> bits_per_raw_sample <= 8 && ! f -> transparency ) { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P ; break ; case 0x01 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV440P ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P ; break ; case 0x20 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV411P ; break ; case 0x22 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV410P ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample <= 8 && f -> transparency ) { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA444P ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA422P ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA420P ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample == 9 ) { f -> packed_at_lsb = 1 ; switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P9 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P9 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P9 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample == 10 ) { f -> packed_at_lsb = 1 ; switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P10 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P10 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P10 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P16 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P16 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P16 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } } else if ( f -> colorspace == 1 ) { if ( f -> chroma_h_shift || f -> chroma_v_shift ) { av_log ( f -> avctx , AV_LOG_ERROR , \"chroma<S2SV_blank>subsampling<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>this<S2SV_blank>colorspace\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } if ( f -> avctx -> bits_per_raw_sample == 9 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP9 ; else if ( f -> avctx -> bits_per_raw_sample == 10 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP10 ; else if ( f -> avctx -> bits_per_raw_sample == 12 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP12 ; else if ( f -> avctx -> bits_per_raw_sample == 14 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP14 ; else if ( f -> transparency ) f -> avctx -> pix_fmt = AV_PIX_FMT_RGB32 ; else f -> avctx -> pix_fmt = AV_PIX_FMT_0RGB32 ; } else { av_log ( f -> avctx , AV_LOG_ERROR , \"colorspace<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } av_dlog ( f -> avctx , \"%d<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , f -> chroma_h_shift , f -> chroma_v_shift , f -> avctx -> pix_fmt ) ; if ( f -> version < 2 ) { context_count = read_quant_tables ( c , f -> quant_table ) ; if ( context_count < 0 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"read_quant_table<S2SV_blank>error\\\\n\" ) ; return AVERROR_INVALIDDATA ; } } else if ( f -> version < 3 ) { f -> slice_count = get_symbol ( c , state , 0 ) ; } else { const uint8_t * p = c -> bytestream_end ; for ( f -> slice_count = 0 ; f -> slice_count < MAX_SLICES && 3 < p - c -> bytestream_start ; f -> slice_count ++ ) { int trailer = 3 + 5 * ! ! f -> ec ; int size = AV_RB24 ( p - trailer ) ; if ( size + trailer > p - c -> bytestream_start ) break ; p -= size + trailer ; } } if ( f -> slice_count > ( unsigned ) MAX_SLICES || f -> slice_count <= 0 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"slice<S2SV_blank>count<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\\\\n\" , f -> slice_count ) ; return AVERROR_INVALIDDATA ; } for ( j = 0 ; j < f -> slice_count ; j ++ ) { FFV1Context * fs = f -> slice_context [ j ] ; fs -> ac = f -> ac ; fs -> packed_at_lsb = f -> packed_at_lsb ; fs -> slice_damaged = 0 ; if ( f -> version == 2 ) { fs -> slice_x = get_symbol ( c , state , 0 ) * f -> width ; fs -> slice_y = get_symbol ( c , state , 0 ) * f -> height ; fs -> slice_width = ( get_symbol ( c , state , 0 ) + 1 ) * f -> width + fs -> slice_x ; fs -> slice_height = ( get_symbol ( c , state , 0 ) + 1 ) * f -> height + fs -> slice_y ; fs -> slice_x /= f -> num_h_slices ; fs -> slice_y /= f -> num_v_slices ; fs -> slice_width = fs -> slice_width / f -> num_h_slices - fs -> slice_x ; fs -> slice_height = fs -> slice_height / f -> num_v_slices - fs -> slice_y ; if ( ( unsigned ) fs -> slice_width > f -> width || ( unsigned ) fs -> slice_height > f -> height ) return AVERROR_INVALIDDATA ; if ( ( unsigned ) fs -> slice_x + ( uint64_t ) fs -> slice_width > f -> width || ( unsigned ) fs -> slice_y + ( uint64_t ) fs -> slice_height > f -> height ) return AVERROR_INVALIDDATA ; } for ( i = 0 ; i < f -> plane_count ; i ++ ) { PlaneContext * const p = & fs -> plane [ i ] ; if ( f -> version == 2 ) { int idx = get_symbol ( c , state , 0 ) ; if ( idx > ( unsigned ) f -> quant_table_count ) { av_log ( f -> avctx , AV_LOG_ERROR , \"quant_table_index<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" ) ; return AVERROR_INVALIDDATA ; } p -> quant_table_index = idx ; memcpy ( p -> quant_table , f -> quant_tables [ idx ] , sizeof ( p -> quant_table ) ) ; context_count = f -> context_count [ idx ] ; } else { memcpy ( p -> quant_table , f -> quant_table , sizeof ( p -> quant_table ) ) ; } if ( f -> version <= 2 ) { av_assert0 ( context_count >= 0 ) ; if ( p -> context_count < context_count ) { av_freep ( & p -> state ) ; av_freep ( & p -> vlc_state ) ; } p -> context_count = context_count ; } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) { int chroma_planes , chroma_h_shift , chroma_v_shift , transparency ; <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> chroma_planes = get_rac <S2SV_ModStart> state ) ; <S2SV_ModEnd> chroma_h_shift = get_symbol <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> chroma_v_shift = get_symbol <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> transparency = get_rac <S2SV_ModStart> , state ) ; if ( f -> plane_count ) { if ( chroma_planes != f -> chroma_planes || chroma_h_shift != f -> chroma_h_shift || chroma_v_shift != f -> chroma_v_shift || transparency != f -> transparency ) { av_log ( f -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>change<S2SV_blank>of<S2SV_blank>global<S2SV_blank>parameters\\\\n\" ) ; return AVERROR_INVALIDDATA ; } } f -> chroma_planes = chroma_planes ; f -> chroma_h_shift = chroma_h_shift ; f -> chroma_v_shift = chroma_v_shift ; f -> transparency = transparency\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-255(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20839\n\n```\nCWE-255 static int find_source_vc ( char * * ret_path , unsigned * ret_idx ) { _cleanup_free_ char * path = NULL ; int r , err = 0 ; unsigned i ; path = new ( char , sizeof ( \"/dev/tty63\" ) ) ; if ( ! path ) return log_oom ( ) ; for ( i = 1 ; i <= 63 ; i ++ ) { _cleanup_close_ int fd = - 1 ; r = verify_vc_allocation ( i ) ; if ( r < 0 ) { if ( ! err ) err = - r ; continue ; } sprintf ( path , \"/dev/tty%u\" , i ) ; fd = open_terminal ( path , O_RDWR | O_CLOEXEC | O_NOCTTY ) ; if ( fd < 0 ) { if ( ! err ) err = - fd ; continue ; } <S2SV_StartBug> r = verify_vc_kbmode ( fd ) ; <S2SV_EndBug> if ( r < 0 ) { if ( ! err ) err = - r ; continue ; } * ret_idx = i ; * ret_path = TAKE_PTR ( path ) ; return TAKE_FD ( fd ) ; } return log_error_errno ( err , \"No<S2SV_blank>usable<S2SV_blank>source<S2SV_blank>console<S2SV_blank>found:<S2SV_blank>%m\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } r = vt_verify_kbmode <S2SV_ModEnd> ( fd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3364\n\n```\nCWE-119 static __u8 * nci_extract_rf_params_nfcf_passive_poll ( struct nci_dev * ndev , struct rf_tech_specific_params_nfcf_poll * nfcf_poll , __u8 * data ) { nfcf_poll -> bit_rate = * data ++ ; <S2SV_StartBug> nfcf_poll -> sensf_res_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"bit_rate<S2SV_blank>%d,<S2SV_blank>sensf_res_len<S2SV_blank>%d\\\\n\" , nfcf_poll -> bit_rate , nfcf_poll -> sensf_res_len ) ; memcpy ( nfcf_poll -> sensf_res , data , nfcf_poll -> sensf_res_len ) ; data += nfcf_poll -> sensf_res_len ; return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sensf_res_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , NFC_SENSF_RES_MAXSIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void rawSocketProcessEthPacket ( NetInterface * interface , EthHeader * header , const uint8_t * data , size_t length , NetRxAncillary * ancillary ) { uint_t i ; Socket * socket ; SocketQueueItem * queueItem ; NetBuffer * p ; for ( i = 0 ; i < SOCKET_MAX_COUNT ; i ++ ) { socket = socketTable + i ; if ( socket -> type != SOCKET_TYPE_RAW_ETH ) continue ; if ( socket -> interface && socket -> interface != interface ) continue ; if ( socket -> protocol == SOCKET_ETH_PROTO_ALL ) { } else if ( socket -> protocol == SOCKET_ETH_PROTO_LLC ) { if ( ntohs ( header -> type ) > ETH_MTU ) continue ; } else { if ( ntohs ( header -> type ) != socket -> protocol ) continue ; } break ; } if ( i >= SOCKET_MAX_COUNT ) return ; if ( socket -> receiveQueue == NULL ) { p = netBufferAlloc ( sizeof ( SocketQueueItem ) + sizeof ( EthHeader ) + length ) ; if ( p != NULL ) { queueItem = netBufferAt ( p , 0 ) ; queueItem -> buffer = p ; socket -> receiveQueue = queueItem ; } else { queueItem = NULL ; } } else { queueItem = socket -> receiveQueue ; for ( i = 1 ; queueItem -> next ; i ++ ) { queueItem = queueItem -> next ; } if ( i >= RAW_SOCKET_RX_QUEUE_SIZE ) { MIB2_INC_COUNTER32 ( ifGroup . ifTable [ interface -> index ] . ifInDiscards , 1 ) ; IF_MIB_INC_COUNTER32 ( ifTable [ interface -> index ] . ifInDiscards , 1 ) ; return ; } p = netBufferAlloc ( sizeof ( SocketQueueItem ) + sizeof ( EthHeader ) + length ) ; if ( p != NULL ) { queueItem -> next = netBufferAt ( p , 0 ) ; queueItem = queueItem -> next ; queueItem -> buffer = p ; } else { queueItem = NULL ; } } if ( queueItem == NULL ) { MIB2_INC_COUNTER32 ( ifGroup . ifTable [ interface -> index ] . ifInDiscards , 1 ) ; IF_MIB_INC_COUNTER32 ( ifTable [ interface -> index ] . ifInDiscards , 1 ) ; return ; } queueItem -> next = NULL ; <S2SV_StartBug> queueItem -> srcPort = 0 ; <S2SV_EndBug> queueItem -> srcIpAddr = IP_ADDR_ANY ; queueItem -> destIpAddr = IP_ADDR_ANY ; queueItem -> offset = sizeof ( SocketQueueItem ) ; netBufferWrite ( queueItem -> buffer , queueItem -> offset , header , sizeof ( EthHeader ) ) ; netBufferWrite ( queueItem -> buffer , queueItem -> offset + sizeof ( EthHeader ) , data , length ) ; queueItem -> ancillary = * ancillary ; rawSocketUpdateEvents ( socket ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; queueItem -> interface = interface ; queueItem ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8666\n\n```\nCWE-400 static enum gro_result dev_gro_receive ( struct napi_struct * napi , struct sk_buff * skb ) { struct sk_buff * * pp = NULL ; struct packet_offload * ptype ; __be16 type = skb -> protocol ; struct list_head * head = & offload_base ; int same_flow ; enum gro_result ret ; int grow ; if ( ! ( skb -> dev -> features & NETIF_F_GRO ) ) goto normal ; if ( skb_is_gso ( skb ) || skb_has_frag_list ( skb ) || skb -> csum_bad ) goto normal ; gro_list_prepare ( napi , skb ) ; rcu_read_lock ( ) ; list_for_each_entry_rcu ( ptype , head , list ) { if ( ptype -> type != type || ! ptype -> callbacks . gro_receive ) continue ; skb_set_network_header ( skb , skb_gro_offset ( skb ) ) ; skb_reset_mac_len ( skb ) ; NAPI_GRO_CB ( skb ) -> same_flow = 0 ; NAPI_GRO_CB ( skb ) -> flush = 0 ; NAPI_GRO_CB ( skb ) -> free = 0 ; <S2SV_StartBug> NAPI_GRO_CB ( skb ) -> udp_mark = 0 ; <S2SV_EndBug> NAPI_GRO_CB ( skb ) -> gro_remcsum_start = 0 ; switch ( skb -> ip_summed ) { case CHECKSUM_COMPLETE : NAPI_GRO_CB ( skb ) -> csum = skb -> csum ; NAPI_GRO_CB ( skb ) -> csum_valid = 1 ; NAPI_GRO_CB ( skb ) -> csum_cnt = 0 ; break ; case CHECKSUM_UNNECESSARY : NAPI_GRO_CB ( skb ) -> csum_cnt = skb -> csum_level + 1 ; NAPI_GRO_CB ( skb ) -> csum_valid = 0 ; break ; default : NAPI_GRO_CB ( skb ) -> csum_cnt = 0 ; NAPI_GRO_CB ( skb ) -> csum_valid = 0 ; } pp = ptype -> callbacks . gro_receive ( & napi -> gro_list , skb ) ; break ; } rcu_read_unlock ( ) ; if ( & ptype -> list == head ) goto normal ; same_flow = NAPI_GRO_CB ( skb ) -> same_flow ; ret = NAPI_GRO_CB ( skb ) -> free ? GRO_MERGED_FREE : GRO_MERGED ; if ( pp ) { struct sk_buff * nskb = * pp ; * pp = nskb -> next ; nskb -> next = NULL ; napi_gro_complete ( nskb ) ; napi -> gro_count -- ; } if ( same_flow ) goto ok ; if ( NAPI_GRO_CB ( skb ) -> flush ) goto normal ; if ( unlikely ( napi -> gro_count >= MAX_GRO_SKBS ) ) { struct sk_buff * nskb = napi -> gro_list ; while ( nskb -> next ) { pp = & nskb -> next ; nskb = * pp ; } * pp = NULL ; nskb -> next = NULL ; napi_gro_complete ( nskb ) ; } else { napi -> gro_count ++ ; } NAPI_GRO_CB ( skb ) -> count = 1 ; NAPI_GRO_CB ( skb ) -> age = jiffies ; NAPI_GRO_CB ( skb ) -> last = skb ; skb_shinfo ( skb ) -> gso_size = skb_gro_len ( skb ) ; skb -> next = napi -> gro_list ; napi -> gro_list = skb ; ret = GRO_HELD ; pull : grow = skb_gro_offset ( skb ) - skb_headlen ( skb ) ; if ( grow > 0 ) gro_pull_from_frag0 ( skb , grow ) ; ok : return ret ; normal : ret = GRO_NORMAL ; goto pull ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) -> encap_mark <S2SV_ModEnd> = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16526\n\n```\nCWE-119 void uwbd_stop ( struct uwb_rc * rc ) <S2SV_StartBug> { <S2SV_EndBug> kthread_stop ( rc -> uwbd . task ) ; uwbd_flush ( rc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc ) { if ( rc -> uwbd . task )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7513\n\n```\nCWE-000 static int kvm_vm_ioctl_set_pit ( struct kvm * kvm , struct kvm_pit_state * ps ) <S2SV_StartBug> { <S2SV_EndBug> mutex_lock ( & kvm -> arch . vpit -> pit_state . lock ) ; memcpy ( & kvm -> arch . vpit -> pit_state , ps , sizeof ( struct kvm_pit_state ) ) ; <S2SV_StartBug> kvm_pit_load_count ( kvm , 0 , ps -> channels [ 0 ] . count , 0 ) ; <S2SV_EndBug> mutex_unlock ( & kvm -> arch . vpit -> pit_state . lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ps ) { int i ; <S2SV_ModStart> ) ) ; for ( i = 0 ; i < 3 ; i ++ ) <S2SV_ModStart> ( kvm , i <S2SV_ModEnd> , ps -> <S2SV_ModStart> -> channels [ i <S2SV_ModEnd> ] . count\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6401\n\n```\nCWE-310 static void test_simple ( ) { json_set_alloc_funcs ( my_malloc , my_free ) ; create_and_free_complex_object ( ) ; <S2SV_StartBug> if ( malloc_called != 20 || free_called != 20 ) <S2SV_EndBug> fail ( \"Custom<S2SV_blank>allocation<S2SV_blank>failed\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( malloc_called != 1 <S2SV_ModEnd> || free_called != <S2SV_ModStart> || free_called != 1 <S2SV_ModEnd> ) fail (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jas_matrix_t * jas_seq2d_input ( FILE * in ) { jas_matrix_t * matrix ; <S2SV_StartBug> int i ; <S2SV_EndBug> int j ; long x ; <S2SV_StartBug> int numrows ; <S2SV_EndBug> int numcols ; int xoff ; int yoff ; <S2SV_StartBug> if ( fscanf ( in , \"%d<S2SV_blank>%d\" , & xoff , & yoff ) != 2 ) <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( fscanf ( in , \"%d<S2SV_blank>%d\" , & numcols , & numrows ) != 2 ) <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( ! ( matrix = jas_seq2d_create ( xoff , yoff , xoff + numcols , yoff + numrows ) ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( jas_matrix_numrows ( matrix ) != numrows || jas_matrix_numcols ( matrix ) != numcols ) { abort ( ) ; } for ( i = 0 ; i < jas_matrix_numrows ( matrix ) ; i ++ ) { for ( j = 0 ; j < jas_matrix_numcols ( matrix ) ; j ++ ) { if ( fscanf ( in , \"%ld\" , & x ) != 1 ) { jas_matrix_destroy ( matrix ) ; return 0 ; } jas_matrix_set ( matrix , i , j , JAS_CAST ( jas_seqent_t , x ) ) ; } } return matrix ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * matrix ; jas_matind_t i ; jas_matind_t <S2SV_ModEnd> j ; long <S2SV_ModStart> long x ; jas_matind_t numrows ; jas_matind_t numcols ; jas_matind_t xoff ; jas_matind_t yoff ; long tmp_xoff ; long tmp_yoff ; long tmp_numrows ; long tmp_numcols <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( in , \"%ld<S2SV_blank>%ld\" , & tmp_xoff , & tmp_yoff <S2SV_ModEnd> ) != 2 <S2SV_ModStart> != 2 ) { return 0 ; } xoff = tmp_xoff ; yoff = tmp_yoff <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( in , \"%ld<S2SV_blank>%ld\" , & tmp_numcols , & tmp_numrows <S2SV_ModEnd> ) != 2 <S2SV_ModStart> != 2 ) { return 0 ; } numrows = tmp_numrows ; numcols = tmp_numcols <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) ) { return 0 ; } <S2SV_ModEnd> if ( jas_matrix_numrows\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_type_ignore ( void * _o ) { type_ignore_ty o = ( type_ignore_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } switch ( o -> kind ) { case TypeIgnore_kind : result = PyType_GenericNew ( TypeIgnore_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_int ( o -> v . TypeIgnore . lineno ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_lineno , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; } return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } switch\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000369\n\n```\nCWE-404 int main ( int argc , char * * cargv ) { uschar * * argv = USS cargv ; int arg_receive_timeout = - 1 ; int arg_smtp_receive_timeout = - 1 ; int arg_error_handling = error_handling ; int filter_sfd = - 1 ; int filter_ufd = - 1 ; int group_count ; int i , rv ; int list_queue_option = 0 ; int msg_action = 0 ; int msg_action_arg = - 1 ; int namelen = ( argv [ 0 ] == NULL ) ? 0 : Ustrlen ( argv [ 0 ] ) ; int queue_only_reason = 0 ; # ifdef EXIM_PERL int perl_start_option = 0 ; # endif int recipients_arg = argc ; int sender_address_domain = 0 ; int test_retry_arg = - 1 ; int test_rewrite_arg = - 1 ; BOOL arg_queue_only = FALSE ; BOOL bi_option = FALSE ; BOOL checking = FALSE ; BOOL count_queue = FALSE ; BOOL expansion_test = FALSE ; BOOL extract_recipients = FALSE ; BOOL flag_G = FALSE ; BOOL flag_n = FALSE ; BOOL forced_delivery = FALSE ; BOOL f_end_dot = FALSE ; BOOL deliver_give_up = FALSE ; BOOL list_queue = FALSE ; BOOL list_options = FALSE ; BOOL list_config = FALSE ; BOOL local_queue_only ; BOOL more = TRUE ; BOOL one_msg_action = FALSE ; BOOL opt_D_used = FALSE ; BOOL queue_only_set = FALSE ; BOOL receiving_message = TRUE ; BOOL sender_ident_set = FALSE ; BOOL session_local_queue_only ; BOOL unprivileged ; BOOL removed_privilege = FALSE ; BOOL usage_wanted = FALSE ; BOOL verify_address_mode = FALSE ; BOOL verify_as_sender = FALSE ; BOOL version_printed = FALSE ; uschar * alias_arg = NULL ; uschar * called_as = US \"\" ; uschar * cmdline_syslog_name = NULL ; uschar * start_queue_run_id = NULL ; uschar * stop_queue_run_id = NULL ; uschar * expansion_test_message = NULL ; uschar * ftest_domain = NULL ; uschar * ftest_localpart = NULL ; uschar * ftest_prefix = NULL ; uschar * ftest_suffix = NULL ; uschar * log_oneline = NULL ; uschar * malware_test_file = NULL ; uschar * real_sender_address ; uschar * originator_home = US \"/\" ; size_t sz ; void * reset_point ; struct passwd * pw ; struct stat statbuf ; pid_t passed_qr_pid = ( pid_t ) 0 ; int passed_qr_pipe = - 1 ; gid_t group_list [ NGROUPS_MAX ] ; enum commandline_info info_flag = CMDINFO_NONE ; BOOL info_stdout = FALSE ; static uschar * rsopts [ ] = { US \"f\" , US \"ff\" , US \"r\" , US \"rf\" , US \"rff\" } ; extern char * * environ ; # ifdef EXIM_USERNAME if ( route_finduser ( US EXIM_USERNAME , & pw , & exim_uid ) ) { if ( exim_uid == 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>refusing<S2SV_blank>to<S2SV_blank>run<S2SV_blank>with<S2SV_blank>uid<S2SV_blank>0<S2SV_blank>for<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , EXIM_USERNAME ) ; exit ( EXIT_FAILURE ) ; } if ( pw ) exim_gid = pw -> pw_gid ; # ifndef EXIM_GROUPNAME else { fprintf ( stderr , \"exim:<S2SV_blank>ref:name<S2SV_blank>should<S2SV_blank>specify<S2SV_blank>a<S2SV_blank>usercode,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>group.\\\\n\" \"exim:<S2SV_blank>can\\'t<S2SV_blank>let<S2SV_blank>you<S2SV_blank>get<S2SV_blank>away<S2SV_blank>with<S2SV_blank>it<S2SV_blank>unless<S2SV_blank>you<S2SV_blank>also<S2SV_blank>specify<S2SV_blank>a<S2SV_blank>group.\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } # endif } else { fprintf ( stderr , \"exim:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>find<S2SV_blank>uid<S2SV_blank>for<S2SV_blank>user<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , EXIM_USERNAME ) ; exit ( EXIT_FAILURE ) ; } # endif # ifdef EXIM_GROUPNAME if ( ! route_findgroup ( US EXIM_GROUPNAME , & exim_gid ) ) { fprintf ( stderr , \"exim:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>find<S2SV_blank>gid<S2SV_blank>for<S2SV_blank>group<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , EXIM_GROUPNAME ) ; exit ( EXIT_FAILURE ) ; } # endif # ifdef CONFIGURE_OWNERNAME if ( ! route_finduser ( US CONFIGURE_OWNERNAME , NULL , & config_uid ) ) { fprintf ( stderr , \"exim:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>find<S2SV_blank>uid<S2SV_blank>for<S2SV_blank>user<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , CONFIGURE_OWNERNAME ) ; exit ( EXIT_FAILURE ) ; } # endif system_filter_uid = exim_uid ; # ifdef CONFIGURE_GROUPNAME if ( ! route_findgroup ( US CONFIGURE_GROUPNAME , & config_gid ) ) { fprintf ( stderr , \"exim:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>find<S2SV_blank>gid<S2SV_blank>for<S2SV_blank>group<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , CONFIGURE_GROUPNAME ) ; exit ( EXIT_FAILURE ) ; } # endif # ifdef OS_INIT OS_INIT # endif running_in_test_harness = * running_status == '<' && Ustrcmp ( running_status , \"<<<testing>>>\" ) == 0 ; setlocale ( LC_ALL , \"C\" ) ; os_non_restarting_signal ( SIGALRM , sigalrm_handler ) ; if ( ! ( log_buffer = US malloc ( LOG_BUFFER_SIZE ) ) ) { fprintf ( stderr , \"exim:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>store<S2SV_blank>for<S2SV_blank>log<S2SV_blank>buffer\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } bits_set ( log_selector , log_selector_size , log_default ) ; if ( fstat ( fileno ( stderr ) , & statbuf ) >= 0 ) log_stderr = stderr ; pcre_malloc = function_store_get ; pcre_free = function_dummy_free ; big_buffer = store_malloc ( big_buffer_size ) ; set_process_info ( \"initializing\" ) ; os_restarting_signal ( SIGUSR1 , usr1_handler ) ; signal ( SIGHUP , SIG_IGN ) ; signal ( SIGPIPE , SIG_IGN ) ; # ifdef SA_NOCLDWAIT { struct sigaction act ; act . sa_handler = SIG_DFL ; sigemptyset ( & ( act . sa_mask ) ) ; act . sa_flags = 0 ; sigaction ( SIGCHLD , & act , NULL ) ; } # else signal ( SIGCHLD , SIG_DFL ) ; # endif sighup_argv = argv ; version_init ( ) ; message_id_option [ 0 ] = '-' ; message_id_external = message_id_option + 1 ; message_id_external [ 0 ] = 'E' ; message_id = message_id_external + 1 ; message_id [ 0 ] = 0 ; ( void ) umask ( 0 ) ; regex_ismsgid = regex_must_compile ( US \"^(?:[^\\\\\\\\W_]{6}-){2}[^\\\\\\\\W_]{2}$\" , FALSE , TRUE ) ; regex_smtp_code = regex_must_compile ( US \"^\\\\\\\\d\\\\\\\\d\\\\\\\\d\\\\\\\\s(?:\\\\\\\\d\\\\\\\\.\\\\\\\\d\\\\\\\\d?\\\\\\\\d?\\\\\\\\.\\\\\\\\d\\\\\\\\d?\\\\\\\\d?\\\\\\\\s)?\" , FALSE , TRUE ) ; # ifdef WHITELIST_D_MACROS regex_whitelisted_macro = regex_must_compile ( US \"^[A-Za-z0-9_/.-]*$\" , FALSE , TRUE ) ; # endif for ( i = 0 ; i < REGEX_VARS ; i ++ ) regex_vars [ i ] = NULL ; if ( ( namelen == 5 && Ustrcmp ( argv [ 0 ] , \"mailq\" ) == 0 ) || ( namelen > 5 && Ustrncmp ( argv [ 0 ] + namelen - 6 , \"/mailq\" , 6 ) == 0 ) ) { list_queue = TRUE ; receiving_message = FALSE ; called_as = US \"-mailq\" ; } if ( ( namelen == 5 && Ustrcmp ( argv [ 0 ] , \"rmail\" ) == 0 ) || ( namelen > 5 && Ustrncmp ( argv [ 0 ] + namelen - 6 , \"/rmail\" , 6 ) == 0 ) ) { dot_ends = FALSE ; called_as = US \"-rmail\" ; errors_sender_rc = EXIT_SUCCESS ; } if ( ( namelen == 5 && Ustrcmp ( argv [ 0 ] , \"rsmtp\" ) == 0 ) || ( namelen > 5 && Ustrncmp ( argv [ 0 ] + namelen - 6 , \"/rsmtp\" , 6 ) == 0 ) ) { smtp_input = smtp_batched_input = TRUE ; called_as = US \"-rsmtp\" ; } if ( ( namelen == 4 && Ustrcmp ( argv [ 0 ] , \"runq\" ) == 0 ) || ( namelen > 4 && Ustrncmp ( argv [ 0 ] + namelen - 5 , \"/runq\" , 5 ) == 0 ) ) { queue_interval = 0 ; receiving_message = FALSE ; called_as = US \"-runq\" ; } if ( ( namelen == 10 && Ustrcmp ( argv [ 0 ] , \"newaliases\" ) == 0 ) || ( namelen > 10 && Ustrncmp ( argv [ 0 ] + namelen - 11 , \"/newaliases\" , 11 ) == 0 ) ) { bi_option = TRUE ; receiving_message = FALSE ; called_as = US \"-newaliases\" ; } original_euid = geteuid ( ) ; real_uid = getuid ( ) ; real_gid = getgid ( ) ; if ( real_uid == root_uid ) { rv = setgid ( real_gid ) ; if ( rv ) { fprintf ( stderr , \"exim:<S2SV_blank>setgid(%ld)<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , ( long int ) real_gid , strerror ( errno ) ) ; exit ( EXIT_FAILURE ) ; } rv = setuid ( real_uid ) ; if ( rv ) { fprintf ( stderr , \"exim:<S2SV_blank>setuid(%ld)<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , ( long int ) real_uid , strerror ( errno ) ) ; exit ( EXIT_FAILURE ) ; } } unprivileged = ( real_uid != root_uid && original_euid != root_uid ) ; for ( i = 1 ; i < argc ; i ++ ) { BOOL badarg = FALSE ; uschar * arg = argv [ i ] ; uschar * argrest ; int switchchar ; if ( arg [ 0 ] != '-' ) { recipients_arg = i ; break ; } if ( Ustrcmp ( arg , \"--\" ) == 0 ) { recipients_arg = i + 1 ; break ; } switchchar = arg [ 1 ] ; argrest = arg + 2 ; if ( Ustrncmp ( arg + 1 , \"oe\" , 2 ) == 0 || Ustrncmp ( arg + 1 , \"qR\" , 2 ) == 0 || Ustrncmp ( arg + 1 , \"qS\" , 2 ) == 0 ) { switchchar = arg [ 2 ] ; argrest ++ ; } else if ( Ustrncmp ( arg + 1 , \"qqR\" , 3 ) == 0 || Ustrncmp ( arg + 1 , \"qqS\" , 3 ) == 0 ) { switchchar = arg [ 3 ] ; argrest += 2 ; queue_2stage = TRUE ; } else if ( arg [ 1 ] == 'r' ) switchchar = 'f' ; else if ( Ustrcmp ( arg , \"-ov\" ) == 0 ) { switchchar = 'v' ; argrest ++ ; } else if ( switchchar == '-' ) { if ( Ustrcmp ( argrest , \"help\" ) == 0 ) { usage_wanted = TRUE ; break ; } else if ( Ustrcmp ( argrest , \"version\" ) == 0 ) { switchchar = 'b' ; argrest = US \"V\" ; } } switch ( switchchar ) { case 'A' : if ( * argrest == '\\\\0' ) { badarg = TRUE ; break ; } else { BOOL ignore = FALSE ; switch ( * argrest ) { case 'c' : case 'm' : if ( * ( argrest + 1 ) == '\\\\0' ) ignore = TRUE ; break ; } if ( ! ignore ) { badarg = TRUE ; break ; } } break ; case 'B' : if ( * argrest == 0 ) i ++ ; break ; case 'b' : receiving_message = FALSE ; if ( * argrest == 'd' ) { daemon_listen = TRUE ; if ( * ( ++ argrest ) == 'f' ) background_daemon = FALSE ; else if ( * argrest != 0 ) { badarg = TRUE ; break ; } } else if ( * argrest == 'e' ) { expansion_test = checking = TRUE ; if ( argrest [ 1 ] == 'm' ) { if ( ++ i >= argc ) { badarg = TRUE ; break ; } expansion_test_message = argv [ i ] ; argrest ++ ; } if ( argrest [ 1 ] != 0 ) { badarg = TRUE ; break ; } } else if ( * argrest == 'F' ) { filter_test |= checking = FTEST_SYSTEM ; if ( * ( ++ argrest ) != 0 ) { badarg = TRUE ; break ; } if ( ++ i < argc ) filter_test_sfile = argv [ i ] ; else { fprintf ( stderr , \"exim:<S2SV_blank>file<S2SV_blank>name<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>%s\\\\n\" , argv [ i - 1 ] ) ; exit ( EXIT_FAILURE ) ; } } else if ( * argrest == 'f' ) { if ( * ( ++ argrest ) == 0 ) { filter_test |= checking = FTEST_USER ; if ( ++ i < argc ) filter_test_ufile = argv [ i ] ; else { fprintf ( stderr , \"exim:<S2SV_blank>file<S2SV_blank>name<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>%s\\\\n\" , argv [ i - 1 ] ) ; exit ( EXIT_FAILURE ) ; } } else { if ( ++ i >= argc ) { fprintf ( stderr , \"exim:<S2SV_blank>string<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>%s\\\\n\" , arg ) ; exit ( EXIT_FAILURE ) ; } if ( Ustrcmp ( argrest , \"d\" ) == 0 ) ftest_domain = argv [ i ] ; else if ( Ustrcmp ( argrest , \"l\" ) == 0 ) ftest_localpart = argv [ i ] ; else if ( Ustrcmp ( argrest , \"p\" ) == 0 ) ftest_prefix = argv [ i ] ; else if ( Ustrcmp ( argrest , \"s\" ) == 0 ) ftest_suffix = argv [ i ] ; else { badarg = TRUE ; break ; } } } else if ( Ustrcmp ( argrest , \"h\" ) == 0 || Ustrcmp ( argrest , \"hc\" ) == 0 ) { if ( ++ i >= argc ) { badarg = TRUE ; break ; } sender_host_address = argv [ i ] ; host_checking = checking = log_testing_mode = TRUE ; host_checking_callout = argrest [ 1 ] == 'c' ; message_logs = FALSE ; } else if ( Ustrcmp ( argrest , \"i\" ) == 0 ) bi_option = TRUE ; else if ( argrest [ 0 ] == 'I' && Ustrlen ( argrest ) >= 2 && argrest [ 1 ] == ':' ) { uschar * p = & argrest [ 2 ] ; info_flag = CMDINFO_HELP ; if ( Ustrlen ( p ) ) { if ( strcmpic ( p , CUS \"sieve\" ) == 0 ) { info_flag = CMDINFO_SIEVE ; info_stdout = TRUE ; } else if ( strcmpic ( p , CUS \"dscp\" ) == 0 ) { info_flag = CMDINFO_DSCP ; info_stdout = TRUE ; } else if ( strcmpic ( p , CUS \"help\" ) == 0 ) { info_stdout = TRUE ; } } } else if ( Ustrcmp ( argrest , \"m\" ) == 0 ) receiving_message = TRUE ; else if ( Ustrcmp ( argrest , \"malware\" ) == 0 ) { if ( ++ i >= argc ) { badarg = TRUE ; break ; } checking = TRUE ; malware_test_file = argv [ i ] ; } else if ( Ustrcmp ( argrest , \"nq\" ) == 0 ) { allow_unqualified_sender = FALSE ; allow_unqualified_recipient = FALSE ; } else if ( * argrest == 'p' ) { if ( * ( ++ argrest ) == 'c' ) { count_queue = TRUE ; if ( * ( ++ argrest ) != 0 ) badarg = TRUE ; break ; } if ( * argrest == 'r' ) { list_queue_option = 8 ; argrest ++ ; } else list_queue_option = 0 ; list_queue = TRUE ; if ( * argrest == 0 ) { } else if ( Ustrcmp ( argrest , \"u\" ) == 0 ) list_queue_option += 1 ; else if ( Ustrcmp ( argrest , \"a\" ) == 0 ) list_queue_option += 2 ; else { badarg = TRUE ; break ; } } else if ( Ustrcmp ( argrest , \"P\" ) == 0 ) { if ( argv [ i + 1 ] && Ustrcmp ( argv [ i + 1 ] , \"config\" ) == 0 ) { list_config = TRUE ; readconf_save_config ( version_string ) ; } else { list_options = TRUE ; debug_selector |= D_v ; debug_file = stderr ; } } else if ( Ustrcmp ( argrest , \"rt\" ) == 0 ) { checking = TRUE ; test_retry_arg = i + 1 ; goto END_ARG ; } else if ( Ustrcmp ( argrest , \"rw\" ) == 0 ) { checking = TRUE ; test_rewrite_arg = i + 1 ; goto END_ARG ; } else if ( Ustrcmp ( argrest , \"S\" ) == 0 ) smtp_input = smtp_batched_input = receiving_message = TRUE ; else if ( Ustrcmp ( argrest , \"s\" ) == 0 ) smtp_input = receiving_message = TRUE ; else if ( Ustrcmp ( argrest , \"t\" ) == 0 ) address_test_mode = checking = log_testing_mode = TRUE ; else if ( Ustrcmp ( argrest , \"v\" ) == 0 ) verify_address_mode = checking = log_testing_mode = TRUE ; else if ( Ustrcmp ( argrest , \"vs\" ) == 0 ) { verify_address_mode = checking = log_testing_mode = TRUE ; verify_as_sender = TRUE ; } else if ( Ustrcmp ( argrest , \"V\" ) == 0 ) { printf ( \"Exim<S2SV_blank>version<S2SV_blank>%s<S2SV_blank>#%s<S2SV_blank>built<S2SV_blank>%s\\\\n\" , version_string , version_cnumber , version_date ) ; printf ( \"%s\\\\n\" , CS version_copyright ) ; version_printed = TRUE ; show_whats_supported ( stdout ) ; log_testing_mode = TRUE ; } else if ( * argrest == 'w' ) { inetd_wait_mode = TRUE ; background_daemon = FALSE ; daemon_listen = TRUE ; if ( * ( ++ argrest ) != '\\\\0' ) { inetd_wait_timeout = readconf_readtime ( argrest , 0 , FALSE ) ; if ( inetd_wait_timeout <= 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>bad<S2SV_blank>time<S2SV_blank>value<S2SV_blank>%s:<S2SV_blank>abandoned\\\\n\" , argv [ i ] ) ; exit ( EXIT_FAILURE ) ; } } } else badarg = TRUE ; break ; case 'C' : if ( * argrest == 0 ) { if ( ++ i < argc ) argrest = argv [ i ] ; else { badarg = TRUE ; break ; } } if ( Ustrcmp ( config_main_filelist , argrest ) != 0 ) { # ifdef ALT_CONFIG_PREFIX int sep = 0 ; int len = Ustrlen ( ALT_CONFIG_PREFIX ) ; const uschar * list = argrest ; uschar * filename ; while ( ( filename = string_nextinlist ( & list , & sep , big_buffer , big_buffer_size ) ) != NULL ) { if ( ( Ustrlen ( filename ) < len || Ustrncmp ( filename , ALT_CONFIG_PREFIX , len ) != 0 || Ustrstr ( filename , \"/../\" ) != NULL ) && ( Ustrcmp ( filename , \"/dev/null\" ) != 0 || real_uid != root_uid ) ) { fprintf ( stderr , \"-C<S2SV_blank>Permission<S2SV_blank>denied\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } } # endif if ( real_uid != root_uid ) { # ifdef TRUSTED_CONFIG_LIST if ( real_uid != exim_uid # ifdef CONFIGURE_OWNER && real_uid != config_uid # endif ) trusted_config = FALSE ; else { FILE * trust_list = Ufopen ( TRUSTED_CONFIG_LIST , \"rb\" ) ; if ( trust_list ) { struct stat statbuf ; if ( fstat ( fileno ( trust_list ) , & statbuf ) != 0 || ( statbuf . st_uid != root_uid # ifdef CONFIGURE_OWNER && statbuf . st_uid != config_uid # endif ) || ( statbuf . st_gid != root_gid # ifdef CONFIGURE_GROUP && statbuf . st_gid != config_gid # endif && ( statbuf . st_mode & 020 ) != 0 ) || ( statbuf . st_mode & 2 ) != 0 ) { trusted_config = FALSE ; fclose ( trust_list ) ; } else { void * reset_point = store_get ( 0 ) ; uschar * trusted_configs [ 32 ] ; int nr_configs = 0 ; int i = 0 ; while ( Ufgets ( big_buffer , big_buffer_size , trust_list ) ) { uschar * start = big_buffer , * nl ; while ( * start && isspace ( * start ) ) start ++ ; if ( * start != '/' ) continue ; nl = Ustrchr ( start , '\\\\n' ) ; if ( nl ) * nl = 0 ; trusted_configs [ nr_configs ++ ] = string_copy ( start ) ; if ( nr_configs == 32 ) break ; } fclose ( trust_list ) ; if ( nr_configs ) { int sep = 0 ; const uschar * list = argrest ; uschar * filename ; while ( trusted_config && ( filename = string_nextinlist ( & list , & sep , big_buffer , big_buffer_size ) ) != NULL ) { for ( i = 0 ; i < nr_configs ; i ++ ) { if ( Ustrcmp ( filename , trusted_configs [ i ] ) == 0 ) break ; } if ( i == nr_configs ) { trusted_config = FALSE ; break ; } } store_reset ( reset_point ) ; } else { trusted_config = FALSE ; } } } else { trusted_config = FALSE ; } } # else trusted_config = FALSE ; # endif } config_main_filelist = argrest ; config_changed = TRUE ; } break ; case 'D' : # ifdef DISABLE_D_OPTION fprintf ( stderr , \"exim:<S2SV_blank>-D<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available<S2SV_blank>in<S2SV_blank>this<S2SV_blank>Exim<S2SV_blank>binary\\\\n\" ) ; exit ( EXIT_FAILURE ) ; # else { int ptr = 0 ; macro_item * m ; uschar name [ 24 ] ; uschar * s = argrest ; opt_D_used = TRUE ; while ( isspace ( * s ) ) s ++ ; if ( * s < 'A' || * s > 'Z' ) { fprintf ( stderr , \"exim:<S2SV_blank>macro<S2SV_blank>name<S2SV_blank>set<S2SV_blank>by<S2SV_blank>-D<S2SV_blank>must<S2SV_blank>start<S2SV_blank>with<S2SV_blank>\" \"an<S2SV_blank>upper<S2SV_blank>case<S2SV_blank>letter\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } while ( isalnum ( * s ) || * s == '_' ) { if ( ptr < sizeof ( name ) - 1 ) name [ ptr ++ ] = * s ; s ++ ; } name [ ptr ] = 0 ; if ( ptr == 0 ) { badarg = TRUE ; break ; } while ( isspace ( * s ) ) s ++ ; if ( * s != 0 ) { if ( * s ++ != '=' ) { badarg = TRUE ; break ; } while ( isspace ( * s ) ) s ++ ; } for ( m = macros ; m ; m = m -> next ) if ( Ustrcmp ( m -> name , name ) == 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>duplicated<S2SV_blank>-D<S2SV_blank>in<S2SV_blank>command<S2SV_blank>line\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } m = macro_create ( name , s , TRUE , FALSE ) ; if ( clmacro_count >= MAX_CLMACROS ) { fprintf ( stderr , \"exim:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>-D<S2SV_blank>options<S2SV_blank>on<S2SV_blank>command<S2SV_blank>line\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } clmacros [ clmacro_count ++ ] = string_sprintf ( \"-D%s=%s\" , m -> name , m -> replacement ) ; } # endif break ; case 'd' : if ( Ustrcmp ( argrest , \"ropcr\" ) == 0 ) { } else { unsigned int selector = D_default ; debug_selector = 0 ; debug_file = NULL ; if ( * argrest == 'd' ) { debug_daemon = TRUE ; argrest ++ ; } if ( * argrest != 0 ) decode_bits ( & selector , 1 , debug_notall , argrest , debug_options , debug_options_count , US \"debug\" , 0 ) ; debug_selector = selector ; } break ; case 'E' : local_error_message = TRUE ; if ( mac_ismsgid ( argrest ) ) message_reference = argrest ; break ; case 'e' : if ( Ustrcmp ( argrest , \"e\" ) == 0 ) { arg_error_handling = ERRORS_SENDER ; errors_sender_rc = EXIT_SUCCESS ; } else if ( Ustrcmp ( argrest , \"m\" ) == 0 ) arg_error_handling = ERRORS_SENDER ; else if ( Ustrcmp ( argrest , \"p\" ) == 0 ) arg_error_handling = ERRORS_STDERR ; else if ( Ustrcmp ( argrest , \"q\" ) == 0 ) arg_error_handling = ERRORS_STDERR ; else if ( Ustrcmp ( argrest , \"w\" ) == 0 ) arg_error_handling = ERRORS_SENDER ; else badarg = TRUE ; break ; case 'F' : if ( * argrest == 0 ) { if ( ++ i < argc ) argrest = argv [ i ] ; else { badarg = TRUE ; break ; } } originator_name = argrest ; sender_name_forced = TRUE ; break ; case 'f' : { int dummy_start , dummy_end ; uschar * errmess ; if ( * argrest == 0 ) { if ( i + 1 < argc ) argrest = argv [ ++ i ] ; else { badarg = TRUE ; break ; } } if ( * argrest == 0 ) sender_address = string_sprintf ( \"\" ) ; else { uschar * temp = argrest + Ustrlen ( argrest ) - 1 ; while ( temp >= argrest && isspace ( * temp ) ) temp -- ; if ( temp >= argrest && * temp == '.' ) f_end_dot = TRUE ; allow_domain_literals = TRUE ; strip_trailing_dot = TRUE ; # ifdef SUPPORT_I18N allow_utf8_domains = TRUE ; # endif sender_address = parse_extract_address ( argrest , & errmess , & dummy_start , & dummy_end , & sender_address_domain , TRUE ) ; # ifdef SUPPORT_I18N message_smtputf8 = string_is_utf8 ( sender_address ) ; allow_utf8_domains = FALSE ; # endif allow_domain_literals = FALSE ; strip_trailing_dot = FALSE ; if ( sender_address == NULL ) { fprintf ( stderr , \"exim:<S2SV_blank>bad<S2SV_blank>-f<S2SV_blank>address<S2SV_blank>\\\\\"%s\\\\\":<S2SV_blank>%s\\\\n\" , argrest , errmess ) ; return EXIT_FAILURE ; } } sender_address_forced = TRUE ; } break ; case 'G' : flag_G = TRUE ; break ; case 'h' : if ( * argrest == 0 ) { if ( ++ i < argc ) argrest = argv [ i ] ; else { badarg = TRUE ; break ; } } if ( ! isdigit ( * argrest ) ) badarg = TRUE ; break ; case 'i' : if ( * argrest == 0 ) dot_ends = FALSE ; else badarg = TRUE ; break ; case 'L' : if ( * argrest == '\\\\0' ) { if ( ++ i < argc ) argrest = argv [ i ] ; else { badarg = TRUE ; break ; } } sz = Ustrlen ( argrest ) ; if ( sz > 32 ) { fprintf ( stderr , \"exim:<S2SV_blank>the<S2SV_blank>-L<S2SV_blank>syslog<S2SV_blank>name<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long:<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , argrest ) ; return EXIT_FAILURE ; } if ( sz < 1 ) { fprintf ( stderr , \"exim:<S2SV_blank>the<S2SV_blank>-L<S2SV_blank>syslog<S2SV_blank>name<S2SV_blank>is<S2SV_blank>too<S2SV_blank>short\\\\n\" ) ; return EXIT_FAILURE ; } cmdline_syslog_name = argrest ; break ; case 'M' : receiving_message = FALSE ; if ( Ustrcmp ( argrest , \"C\" ) == 0 ) { union sockaddr_46 interface_sock ; EXIM_SOCKLEN_T size = sizeof ( interface_sock ) ; if ( argc != i + 6 ) { fprintf ( stderr , \"exim:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>or<S2SV_blank>too<S2SV_blank>few<S2SV_blank>arguments<S2SV_blank>after<S2SV_blank>-MC\\\\n\" ) ; return EXIT_FAILURE ; } if ( msg_action_arg >= 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>incompatible<S2SV_blank>arguments\\\\n\" ) ; return EXIT_FAILURE ; } continue_transport = argv [ ++ i ] ; continue_hostname = argv [ ++ i ] ; continue_host_address = argv [ ++ i ] ; continue_sequence = Uatoi ( argv [ ++ i ] ) ; msg_action = MSG_DELIVER ; msg_action_arg = ++ i ; forced_delivery = TRUE ; queue_run_pid = passed_qr_pid ; queue_run_pipe = passed_qr_pipe ; if ( ! mac_ismsgid ( argv [ i ] ) ) { fprintf ( stderr , \"exim:<S2SV_blank>malformed<S2SV_blank>message<S2SV_blank>id<S2SV_blank>%s<S2SV_blank>after<S2SV_blank>-MC<S2SV_blank>option\\\\n\" , argv [ i ] ) ; return EXIT_FAILURE ; } if ( ! continue_proxy_cipher ) if ( getsockname ( fileno ( stdin ) , ( struct sockaddr * ) ( & interface_sock ) , & size ) == 0 ) sending_ip_address = host_ntoa ( - 1 , & interface_sock , NULL , & sending_port ) ; else { fprintf ( stderr , \"exim:<S2SV_blank>getsockname()<S2SV_blank>failed<S2SV_blank>after<S2SV_blank>-MC<S2SV_blank>option:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; return EXIT_FAILURE ; } if ( running_in_test_harness ) millisleep ( 500 ) ; break ; } else if ( * argrest == 'C' && argrest [ 1 ] && ! argrest [ 2 ] ) { switch ( argrest [ 1 ] ) { case 'A' : smtp_authenticated = TRUE ; break ; case 'D' : smtp_peer_options |= PEER_OFFERED_DSN ; break ; case 'G' : if ( ++ i < argc ) queue_name = string_copy ( argv [ i ] ) ; else badarg = TRUE ; break ; case 'K' : smtp_peer_options |= PEER_OFFERED_CHUNKING ; break ; case 'P' : smtp_peer_options |= PEER_OFFERED_PIPE ; break ; case 'Q' : if ( ++ i < argc ) passed_qr_pid = ( pid_t ) ( Uatol ( argv [ i ] ) ) ; else badarg = TRUE ; if ( ++ i < argc ) passed_qr_pipe = ( int ) ( Uatol ( argv [ i ] ) ) ; else badarg = TRUE ; break ; case 'S' : smtp_peer_options |= PEER_OFFERED_SIZE ; break ; # ifdef SUPPORT_TLS case 't' : if ( ++ i < argc ) sending_ip_address = argv [ i ] ; else badarg = TRUE ; if ( ++ i < argc ) sending_port = ( int ) ( Uatol ( argv [ i ] ) ) ; else badarg = TRUE ; if ( ++ i < argc ) continue_proxy_cipher = argv [ i ] ; else badarg = TRUE ; case 'T' : smtp_peer_options |= PEER_OFFERED_TLS ; break ; # endif default : badarg = TRUE ; break ; } break ; } else if ( * argrest == 0 ) { msg_action = MSG_DELIVER ; forced_delivery = deliver_force_thaw = TRUE ; } else if ( Ustrcmp ( argrest , \"ar\" ) == 0 ) { msg_action = MSG_ADD_RECIPIENT ; one_msg_action = TRUE ; } else if ( Ustrcmp ( argrest , \"c\" ) == 0 ) msg_action = MSG_DELIVER ; else if ( Ustrcmp ( argrest , \"es\" ) == 0 ) { msg_action = MSG_EDIT_SENDER ; one_msg_action = TRUE ; } else if ( Ustrcmp ( argrest , \"f\" ) == 0 ) msg_action = MSG_FREEZE ; else if ( Ustrcmp ( argrest , \"g\" ) == 0 ) { msg_action = MSG_DELIVER ; deliver_give_up = TRUE ; } else if ( Ustrcmp ( argrest , \"mad\" ) == 0 ) { msg_action = MSG_MARK_ALL_DELIVERED ; } else if ( Ustrcmp ( argrest , \"md\" ) == 0 ) { msg_action = MSG_MARK_DELIVERED ; one_msg_action = TRUE ; } else if ( Ustrcmp ( argrest , \"rm\" ) == 0 ) msg_action = MSG_REMOVE ; else if ( Ustrcmp ( argrest , \"set\" ) == 0 ) { msg_action = MSG_LOAD ; one_msg_action = TRUE ; } else if ( Ustrcmp ( argrest , \"t\" ) == 0 ) msg_action = MSG_THAW ; else if ( Ustrcmp ( argrest , \"vb\" ) == 0 ) { msg_action = MSG_SHOW_BODY ; one_msg_action = TRUE ; } else if ( Ustrcmp ( argrest , \"vc\" ) == 0 ) { msg_action = MSG_SHOW_COPY ; one_msg_action = TRUE ; } else if ( Ustrcmp ( argrest , \"vh\" ) == 0 ) { msg_action = MSG_SHOW_HEADER ; one_msg_action = TRUE ; } else if ( Ustrcmp ( argrest , \"vl\" ) == 0 ) { msg_action = MSG_SHOW_LOG ; one_msg_action = TRUE ; } else { badarg = TRUE ; break ; } msg_action_arg = i + 1 ; if ( msg_action_arg >= argc ) { fprintf ( stderr , \"exim:<S2SV_blank>no<S2SV_blank>message<S2SV_blank>ids<S2SV_blank>given<S2SV_blank>after<S2SV_blank>%s<S2SV_blank>option\\\\n\" , arg ) ; return EXIT_FAILURE ; } if ( ! one_msg_action ) { int j ; for ( j = msg_action_arg ; j < argc ; j ++ ) if ( ! mac_ismsgid ( argv [ j ] ) ) { fprintf ( stderr , \"exim:<S2SV_blank>malformed<S2SV_blank>message<S2SV_blank>id<S2SV_blank>%s<S2SV_blank>after<S2SV_blank>%s<S2SV_blank>option\\\\n\" , argv [ j ] , arg ) ; return EXIT_FAILURE ; } goto END_ARG ; } else { if ( ! mac_ismsgid ( argv [ msg_action_arg ] ) ) { fprintf ( stderr , \"exim:<S2SV_blank>malformed<S2SV_blank>message<S2SV_blank>id<S2SV_blank>%s<S2SV_blank>after<S2SV_blank>%s<S2SV_blank>option\\\\n\" , argv [ msg_action_arg ] , arg ) ; return EXIT_FAILURE ; } i ++ ; } break ; case 'm' : if ( * argrest != 0 ) badarg = TRUE ; break ; case 'N' : if ( * argrest == 0 ) { dont_deliver = TRUE ; debug_selector |= D_v ; debug_file = stderr ; } else badarg = TRUE ; break ; case 'n' : flag_n = TRUE ; break ; case 'O' : if ( * argrest == 0 ) { if ( ++ i >= argc ) { fprintf ( stderr , \"exim:<S2SV_blank>string<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>-O\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } } break ; case 'o' : if ( * argrest == 'A' ) { alias_arg = argrest + 1 ; if ( alias_arg [ 0 ] == 0 ) { if ( i + 1 < argc ) alias_arg = argv [ ++ i ] ; else { fprintf ( stderr , \"exim:<S2SV_blank>string<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>-oA\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } } } else if ( * argrest == 'B' ) { uschar * p = argrest + 1 ; if ( p [ 0 ] == 0 ) { if ( i + 1 < argc && isdigit ( ( argv [ i + 1 ] [ 0 ] ) ) ) p = argv [ ++ i ] ; else { connection_max_messages = 1 ; p = NULL ; } } if ( p != NULL ) { if ( ! isdigit ( * p ) ) { fprintf ( stderr , \"exim:<S2SV_blank>number<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>-oB\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } connection_max_messages = Uatoi ( p ) ; } } else if ( Ustrcmp ( argrest , \"db\" ) == 0 ) { synchronous_delivery = FALSE ; arg_queue_only = FALSE ; queue_only_set = TRUE ; } else if ( Ustrcmp ( argrest , \"df\" ) == 0 || Ustrcmp ( argrest , \"di\" ) == 0 ) { synchronous_delivery = TRUE ; arg_queue_only = FALSE ; queue_only_set = TRUE ; } else if ( Ustrcmp ( argrest , \"dq\" ) == 0 ) { synchronous_delivery = FALSE ; arg_queue_only = TRUE ; queue_only_set = TRUE ; } else if ( Ustrcmp ( argrest , \"dqs\" ) == 0 ) { queue_smtp = TRUE ; arg_queue_only = FALSE ; queue_only_set = TRUE ; } else if ( Ustrcmp ( argrest , \"i\" ) == 0 || Ustrcmp ( argrest , \"itrue\" ) == 0 ) dot_ends = FALSE ; else if ( * argrest == 'M' ) { if ( i + 1 >= argc ) { fprintf ( stderr , \"exim:<S2SV_blank>data<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>-o%s\\\\n\" , argrest ) ; exit ( EXIT_FAILURE ) ; } if ( Ustrcmp ( argrest , \"Ma\" ) == 0 ) sender_host_address = argv [ ++ i ] ; else if ( Ustrcmp ( argrest , \"Maa\" ) == 0 ) sender_host_authenticated = argv [ ++ i ] ; else if ( Ustrcmp ( argrest , \"Mas\" ) == 0 ) authenticated_sender = argv [ ++ i ] ; else if ( Ustrcmp ( argrest , \"Mai\" ) == 0 ) authenticated_id = argv [ ++ i ] ; else if ( Ustrcmp ( argrest , \"Mi\" ) == 0 ) interface_address = argv [ ++ i ] ; else if ( Ustrcmp ( argrest , \"Mm\" ) == 0 ) { if ( ! mac_ismsgid ( argv [ i + 1 ] ) ) { fprintf ( stderr , \"-oMm<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>message<S2SV_blank>ID\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( ! trusted_config ) { fprintf ( stderr , \"-oMm<S2SV_blank>must<S2SV_blank>be<S2SV_blank>called<S2SV_blank>by<S2SV_blank>a<S2SV_blank>trusted<S2SV_blank>user/config\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } message_reference = argv [ ++ i ] ; } <S2SV_StartBug> else if ( Ustrcmp ( argrest , \"Mr\" ) == 0 ) received_protocol = argv [ ++ i ] ; <S2SV_EndBug> else if ( Ustrcmp ( argrest , \"Ms\" ) == 0 ) sender_host_name = argv [ ++ i ] ; else if ( Ustrcmp ( argrest , \"Mt\" ) == 0 ) { sender_ident_set = TRUE ; sender_ident = argv [ ++ i ] ; } else { badarg = TRUE ; break ; } } else if ( Ustrcmp ( argrest , \"m\" ) == 0 ) { } else if ( Ustrcmp ( argrest , \"o\" ) == 0 ) { } else if ( Ustrcmp ( argrest , \"P\" ) == 0 ) override_pid_file_path = argv [ ++ i ] ; else if ( * argrest == 'r' || * argrest == 's' ) { int * tp = ( * argrest == 'r' ) ? & arg_receive_timeout : & arg_smtp_receive_timeout ; if ( argrest [ 1 ] == 0 ) { if ( i + 1 < argc ) * tp = readconf_readtime ( argv [ ++ i ] , 0 , FALSE ) ; } else * tp = readconf_readtime ( argrest + 1 , 0 , FALSE ) ; if ( * tp < 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>bad<S2SV_blank>time<S2SV_blank>value<S2SV_blank>%s:<S2SV_blank>abandoned\\\\n\" , argv [ i ] ) ; exit ( EXIT_FAILURE ) ; } } else if ( Ustrcmp ( argrest , \"X\" ) == 0 ) override_local_interfaces = argv [ ++ i ] ; else badarg = TRUE ; break ; case 'p' : # ifdef EXIM_PERL if ( * argrest == 's' && argrest [ 1 ] == 0 ) { perl_start_option = 1 ; break ; } if ( * argrest == 'd' && argrest [ 1 ] == 0 ) { perl_start_option = - 1 ; break ; } # endif if ( * argrest == 0 ) { if ( i + 1 < argc ) argrest = argv [ ++ i ] ; else { badarg = TRUE ; break ; } } if ( * argrest != 0 ) { <S2SV_StartBug> uschar * hn = Ustrchr ( argrest , ':' ) ; <S2SV_EndBug> if ( hn == NULL ) { received_protocol = argrest ; } else { int old_pool = store_pool ; store_pool = POOL_PERM ; received_protocol = string_copyn ( argrest , hn - argrest ) ; store_pool = old_pool ; sender_host_name = hn + 1 ; } } break ; case 'q' : receiving_message = FALSE ; if ( queue_interval >= 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>-q<S2SV_blank>specified<S2SV_blank>more<S2SV_blank>than<S2SV_blank>once\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( * argrest == 'q' ) { queue_2stage = TRUE ; argrest ++ ; } if ( * argrest == 'i' ) { queue_run_first_delivery = TRUE ; argrest ++ ; } if ( * argrest == 'f' ) { queue_run_force = TRUE ; if ( * ++ argrest == 'f' ) { deliver_force_thaw = TRUE ; argrest ++ ; } } if ( * argrest == 'l' ) { queue_run_local = TRUE ; argrest ++ ; } if ( * argrest == 'G' ) { int i ; for ( argrest ++ , i = 0 ; argrest [ i ] && argrest [ i ] != '/' ; ) i ++ ; queue_name = string_copyn ( argrest , i ) ; argrest += i ; if ( * argrest == '/' ) argrest ++ ; } if ( * argrest == 0 && ( i + 1 >= argc || argv [ i + 1 ] [ 0 ] == '-' || mac_ismsgid ( argv [ i + 1 ] ) ) ) { queue_interval = 0 ; if ( i + 1 < argc && mac_ismsgid ( argv [ i + 1 ] ) ) start_queue_run_id = argv [ ++ i ] ; if ( i + 1 < argc && mac_ismsgid ( argv [ i + 1 ] ) ) stop_queue_run_id = argv [ ++ i ] ; } else if ( ( queue_interval = readconf_readtime ( * argrest ? argrest : argv [ ++ i ] , 0 , FALSE ) ) <= 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>bad<S2SV_blank>time<S2SV_blank>value<S2SV_blank>%s:<S2SV_blank>abandoned\\\\n\" , argv [ i ] ) ; exit ( EXIT_FAILURE ) ; } break ; case 'R' : receiving_message = FALSE ; if ( * argrest != 0 ) { int i ; for ( i = 0 ; i < nelem ( rsopts ) ; i ++ ) if ( Ustrcmp ( argrest , rsopts [ i ] ) == 0 ) { if ( i != 2 ) queue_run_force = TRUE ; if ( i >= 2 ) deliver_selectstring_regex = TRUE ; if ( i == 1 || i == 4 ) deliver_force_thaw = TRUE ; argrest += Ustrlen ( rsopts [ i ] ) ; } } if ( * argrest ) deliver_selectstring = argrest ; else if ( i + 1 < argc ) deliver_selectstring = argv [ ++ i ] ; else { fprintf ( stderr , \"exim:<S2SV_blank>string<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>-R\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } break ; case 'S' : receiving_message = FALSE ; if ( * argrest ) { int i ; for ( i = 0 ; i < nelem ( rsopts ) ; i ++ ) if ( Ustrcmp ( argrest , rsopts [ i ] ) == 0 ) { if ( i != 2 ) queue_run_force = TRUE ; if ( i >= 2 ) deliver_selectstring_sender_regex = TRUE ; if ( i == 1 || i == 4 ) deliver_force_thaw = TRUE ; argrest += Ustrlen ( rsopts [ i ] ) ; } } if ( * argrest ) deliver_selectstring_sender = argrest ; else if ( i + 1 < argc ) deliver_selectstring_sender = argv [ ++ i ] ; else { fprintf ( stderr , \"exim:<S2SV_blank>string<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>-S\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } break ; case 'T' : if ( running_in_test_harness && Ustrcmp ( argrest , \"qt\" ) == 0 ) fudged_queue_times = argv [ ++ i ] ; else badarg = TRUE ; break ; case 't' : if ( * argrest == 0 ) extract_recipients = TRUE ; else if ( Ustrcmp ( argrest , \"i\" ) == 0 ) { extract_recipients = TRUE ; dot_ends = FALSE ; } # ifdef SUPPORT_TLS else if ( Ustrcmp ( argrest , \"ls-on-connect\" ) == 0 ) tls_in . on_connect = TRUE ; # endif else badarg = TRUE ; break ; case 'U' : break ; case 'v' : if ( * argrest == 0 ) { debug_selector |= D_v ; debug_file = stderr ; } else badarg = TRUE ; break ; case 'x' : if ( * argrest != 0 ) badarg = TRUE ; break ; case 'X' : if ( * argrest == '\\\\0' ) if ( ++ i >= argc ) { fprintf ( stderr , \"exim:<S2SV_blank>string<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>-X\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } break ; case 'z' : if ( * argrest == '\\\\0' ) if ( ++ i < argc ) log_oneline = argv [ i ] ; else { fprintf ( stderr , \"exim:<S2SV_blank>file<S2SV_blank>name<S2SV_blank>expected<S2SV_blank>after<S2SV_blank>%s\\\\n\" , argv [ i - 1 ] ) ; exit ( EXIT_FAILURE ) ; } break ; default : badarg = TRUE ; break ; } if ( badarg ) { fprintf ( stderr , \"exim<S2SV_blank>abandoned:<S2SV_blank>unknown,<S2SV_blank>malformed,<S2SV_blank>or<S2SV_blank>incomplete<S2SV_blank>\" \"option<S2SV_blank>%s\\\\n\" , arg ) ; exit ( EXIT_FAILURE ) ; } } if ( ( deliver_selectstring || deliver_selectstring_sender ) && queue_interval < 0 ) queue_interval = 0 ; END_ARG : if ( usage_wanted ) exim_usage ( called_as ) ; if ( ( ( smtp_input || extract_recipients || recipients_arg < argc ) && ( daemon_listen || queue_interval >= 0 || bi_option || test_retry_arg >= 0 || test_rewrite_arg >= 0 || filter_test != FTEST_NONE || ( msg_action_arg > 0 && ! one_msg_action ) ) ) || ( msg_action_arg > 0 && ( daemon_listen || queue_interval > 0 || list_options || ( checking && msg_action != MSG_LOAD ) || bi_option || test_retry_arg >= 0 || test_rewrite_arg >= 0 ) ) || ( ( daemon_listen || queue_interval > 0 ) && ( sender_address != NULL || list_options || list_queue || checking || bi_option ) ) || ( daemon_listen && queue_interval == 0 ) || ( inetd_wait_mode && queue_interval >= 0 ) || ( list_options && ( checking || smtp_input || extract_recipients || filter_test != FTEST_NONE || bi_option ) ) || ( verify_address_mode && ( address_test_mode || smtp_input || extract_recipients || filter_test != FTEST_NONE || bi_option ) ) || ( address_test_mode && ( smtp_input || extract_recipients || filter_test != FTEST_NONE || bi_option ) ) || ( smtp_input && ( sender_address != NULL || filter_test != FTEST_NONE || extract_recipients ) ) || ( deliver_selectstring != NULL && queue_interval < 0 ) || ( msg_action == MSG_LOAD && ( ! expansion_test || expansion_test_message != NULL ) ) ) { fprintf ( stderr , \"exim:<S2SV_blank>incompatible<S2SV_blank>command-line<S2SV_blank>options<S2SV_blank>or<S2SV_blank>arguments\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( debug_selector != 0 ) { debug_file = stderr ; debug_fd = fileno ( debug_file ) ; background_daemon = FALSE ; if ( running_in_test_harness ) millisleep ( 100 ) ; if ( debug_selector != D_v ) { debug_printf ( \"Exim<S2SV_blank>version<S2SV_blank>%s<S2SV_blank>uid=%ld<S2SV_blank>gid=%ld<S2SV_blank>pid=%d<S2SV_blank>D=%x\\\\n\" , version_string , ( long int ) real_uid , ( long int ) real_gid , ( int ) getpid ( ) , debug_selector ) ; if ( ! version_printed ) show_whats_supported ( stderr ) ; } } if ( unprivileged ) { DEBUG ( D_any ) debug_print_ids ( US \"Exim<S2SV_blank>has<S2SV_blank>no<S2SV_blank>root<S2SV_blank>privilege:\" ) ; } else { struct rlimit rlp ; # ifdef RLIMIT_NOFILE if ( getrlimit ( RLIMIT_NOFILE , & rlp ) < 0 ) { log_write ( 0 , LOG_MAIN | LOG_PANIC , \"getrlimit(RLIMIT_NOFILE)<S2SV_blank>failed:<S2SV_blank>%s\" , strerror ( errno ) ) ; rlp . rlim_cur = rlp . rlim_max = 0 ; } if ( rlp . rlim_cur < 1000 ) { rlp . rlim_cur = rlp . rlim_max = 1000 ; if ( setrlimit ( RLIMIT_NOFILE , & rlp ) < 0 ) { rlp . rlim_cur = rlp . rlim_max = 256 ; if ( setrlimit ( RLIMIT_NOFILE , & rlp ) < 0 ) log_write ( 0 , LOG_MAIN | LOG_PANIC , \"setrlimit(RLIMIT_NOFILE)<S2SV_blank>failed:<S2SV_blank>%s\" , strerror ( errno ) ) ; } } # endif # ifdef RLIMIT_NPROC if ( getrlimit ( RLIMIT_NPROC , & rlp ) < 0 ) { log_write ( 0 , LOG_MAIN | LOG_PANIC , \"getrlimit(RLIMIT_NPROC)<S2SV_blank>failed:<S2SV_blank>%s\" , strerror ( errno ) ) ; rlp . rlim_cur = rlp . rlim_max = 0 ; } # ifdef RLIM_INFINITY if ( rlp . rlim_cur != RLIM_INFINITY && rlp . rlim_cur < 1000 ) { rlp . rlim_cur = rlp . rlim_max = RLIM_INFINITY ; # else if ( rlp . rlim_cur < 1000 ) { rlp . rlim_cur = rlp . rlim_max = 1000 ; # endif if ( setrlimit ( RLIMIT_NPROC , & rlp ) < 0 ) log_write ( 0 , LOG_MAIN | LOG_PANIC , \"setrlimit(RLIMIT_NPROC)<S2SV_blank>failed:<S2SV_blank>%s\" , strerror ( errno ) ) ; } # endif } group_count = getgroups ( NGROUPS_MAX , group_list ) ; if ( group_count < 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>getgroups()<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; exit ( EXIT_FAILURE ) ; } if ( setgroups ( 0 , NULL ) != 0 ) { if ( setgroups ( 1 , group_list ) != 0 && ! unprivileged ) { fprintf ( stderr , \"exim:<S2SV_blank>setgroups()<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; exit ( EXIT_FAILURE ) ; } } if ( ( ( ! trusted_config || ! macros_trusted ( opt_D_used ) ) && real_uid != root_uid && ! running_in_test_harness ) || expansion_test || filter_test != FTEST_NONE ) { setgroups ( group_count , group_list ) ; exim_setugid ( real_uid , real_gid , FALSE , US \"-C,<S2SV_blank>-D,<S2SV_blank>-be<S2SV_blank>or<S2SV_blank>-bf<S2SV_blank>forces<S2SV_blank>real<S2SV_blank>uid\" ) ; removed_privilege = TRUE ; if ( ( log_stderr != NULL ) && ( real_uid != exim_uid ) ) really_exim = FALSE ; } else exim_setugid ( geteuid ( ) , getegid ( ) , FALSE , US \"forcing<S2SV_blank>real<S2SV_blank>=<S2SV_blank>effective\" ) ; if ( ( filter_test & FTEST_SYSTEM ) != 0 ) { filter_sfd = Uopen ( filter_test_sfile , O_RDONLY , 0 ) ; if ( filter_sfd < 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , filter_test_sfile , strerror ( errno ) ) ; return EXIT_FAILURE ; } } if ( ( filter_test & FTEST_USER ) != 0 ) { filter_ufd = Uopen ( filter_test_ufile , O_RDONLY , 0 ) ; if ( filter_ufd < 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , filter_test_ufile , strerror ( errno ) ) ; return EXIT_FAILURE ; } } init_lookup_list ( ) ; # ifdef SUPPORT_I18N if ( running_in_test_harness ) smtputf8_advertise_hosts = NULL ; # endif if ( ( initial_cwd = os_getcwd ( NULL , 0 ) ) == NULL ) { perror ( \"exim:<S2SV_blank>can\\'t<S2SV_blank>get<S2SV_blank>the<S2SV_blank>current<S2SV_blank>working<S2SV_blank>directory\" ) ; exit ( EXIT_FAILURE ) ; } readconf_main ( checking || list_options ) ; if ( builtin_macros_create_trigger ) DEBUG ( D_any ) debug_printf ( \"Builtin<S2SV_blank>macros<S2SV_blank>created<S2SV_blank>(expensive)<S2SV_blank>due<S2SV_blank>to<S2SV_blank>config<S2SV_blank>line<S2SV_blank>\\'%.*s\\'\\\\n\" , Ustrlen ( builtin_macros_create_trigger ) - 1 , builtin_macros_create_trigger ) ; if ( cleanup_environment ( ) == FALSE ) log_write ( 0 , LOG_PANIC_DIE , \"Can\\'t<S2SV_blank>cleanup<S2SV_blank>environment\" ) ; if ( real_uid == root_uid || real_uid == exim_uid || real_gid == exim_gid ) admin_user = TRUE ; else { int i , j ; for ( i = 0 ; i < group_count && ! admin_user ; i ++ ) if ( group_list [ i ] == exim_gid ) admin_user = TRUE ; else if ( admin_groups ) for ( j = 1 ; j <= ( int ) admin_groups [ 0 ] && ! admin_user ; j ++ ) if ( admin_groups [ j ] == group_list [ i ] ) admin_user = TRUE ; } if ( real_uid == root_uid || real_uid == exim_uid ) trusted_caller = TRUE ; else { int i , j ; if ( trusted_users ) for ( i = 1 ; i <= ( int ) trusted_users [ 0 ] && ! trusted_caller ; i ++ ) if ( trusted_users [ i ] == real_uid ) trusted_caller = TRUE ; if ( trusted_groups ) for ( i = 1 ; i <= ( int ) trusted_groups [ 0 ] && ! trusted_caller ; i ++ ) if ( trusted_groups [ i ] == real_gid ) trusted_caller = TRUE ; else for ( j = 0 ; j < group_count && ! trusted_caller ; j ++ ) if ( trusted_groups [ i ] == group_list [ j ] ) trusted_caller = TRUE ; } if ( checking && commandline_checks_require_admin && ! admin_user ) { fprintf ( stderr , \"exim:<S2SV_blank>those<S2SV_blank>command-line<S2SV_blank>flags<S2SV_blank>are<S2SV_blank>set<S2SV_blank>to<S2SV_blank>require<S2SV_blank>admin\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } decode_bits ( log_selector , log_selector_size , log_notall , log_selector_string , log_options , log_options_count , US \"log\" , 0 ) ; DEBUG ( D_any ) { int i ; debug_printf ( \"configuration<S2SV_blank>file<S2SV_blank>is<S2SV_blank>%s\\\\n\" , config_main_filename ) ; debug_printf ( \"log<S2SV_blank>selectors<S2SV_blank>=\" ) ; for ( i = 0 ; i < log_selector_size ; i ++ ) debug_printf ( \"<S2SV_blank>%08x\" , log_selector [ i ] ) ; debug_printf ( \"\\\\n\" ) ; } if ( sender_address != NULL ) { if ( sender_address [ sender_address_domain ] == '[' && ! allow_domain_literals ) { fprintf ( stderr , \"exim:<S2SV_blank>bad<S2SV_blank>-f<S2SV_blank>address<S2SV_blank>\\\\\"%s\\\\\":<S2SV_blank>domain<S2SV_blank>literals<S2SV_blank>not<S2SV_blank>\" \"allowed\\\\n\" , sender_address ) ; return EXIT_FAILURE ; } if ( f_end_dot && ! strip_trailing_dot ) { fprintf ( stderr , \"exim:<S2SV_blank>bad<S2SV_blank>-f<S2SV_blank>address<S2SV_blank>\\\\\"%s.\\\\\":<S2SV_blank>domain<S2SV_blank>is<S2SV_blank>malformed<S2SV_blank>\" \"(trailing<S2SV_blank>dot<S2SV_blank>not<S2SV_blank>allowed)\\\\n\" , sender_address ) ; return EXIT_FAILURE ; } } if ( cmdline_syslog_name != NULL ) { if ( admin_user ) { syslog_processname = cmdline_syslog_name ; log_file_path = string_copy ( CUS \"syslog\" ) ; } else { fprintf ( stderr , \"exim:<S2SV_blank>you<S2SV_blank>lack<S2SV_blank>sufficient<S2SV_blank>privilege<S2SV_blank>to<S2SV_blank>specify<S2SV_blank>syslog<S2SV_blank>process<S2SV_blank>name\\\\n\" ) ; return EXIT_FAILURE ; } } if ( Ustrlen ( log_file_path ) > 200 ) log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"log_file_path<S2SV_blank>is<S2SV_blank>longer<S2SV_blank>than<S2SV_blank>200<S2SV_blank>chars:<S2SV_blank>aborting\" ) ; if ( Ustrlen ( pid_file_path ) > 200 ) log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"pid_file_path<S2SV_blank>is<S2SV_blank>longer<S2SV_blank>than<S2SV_blank>200<S2SV_blank>chars:<S2SV_blank>aborting\" ) ; if ( Ustrlen ( spool_directory ) > 200 ) log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"spool_directory<S2SV_blank>is<S2SV_blank>longer<S2SV_blank>than<S2SV_blank>200<S2SV_blank>chars:<S2SV_blank>aborting\" ) ; if ( Ustrlen ( syslog_processname ) > 32 ) log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"syslog_processname<S2SV_blank>is<S2SV_blank>longer<S2SV_blank>than<S2SV_blank>32<S2SV_blank>chars:<S2SV_blank>aborting\" ) ; if ( log_oneline ) if ( admin_user ) { log_write ( 0 , LOG_MAIN , \"%s\" , log_oneline ) ; return EXIT_SUCCESS ; } else return EXIT_FAILURE ; # ifdef EXIM_TMPDIR { uschar * * p ; if ( environ ) for ( p = USS environ ; * p ; p ++ ) if ( Ustrncmp ( * p , \"TMPDIR=\" , 7 ) == 0 && Ustrcmp ( * p + 7 , EXIM_TMPDIR ) != 0 ) { uschar * newp = store_malloc ( Ustrlen ( EXIM_TMPDIR ) + 8 ) ; sprintf ( CS newp , \"TMPDIR=%s\" , EXIM_TMPDIR ) ; * p = newp ; DEBUG ( D_any ) debug_printf ( \"reset<S2SV_blank>TMPDIR=%s<S2SV_blank>in<S2SV_blank>environment\\\\n\" , EXIM_TMPDIR ) ; } } # endif if ( timezone_string && strcmpic ( timezone_string , US \"UTC\" ) == 0 ) timestamps_utc = TRUE ; else { uschar * envtz = US getenv ( \"TZ\" ) ; if ( envtz ? ! timezone_string || Ustrcmp ( timezone_string , envtz ) != 0 : timezone_string != NULL ) { uschar * * p = USS environ ; uschar * * new ; uschar * * newp ; int count = 0 ; if ( environ ) while ( * p ++ ) count ++ ; if ( ! envtz ) count ++ ; newp = new = store_malloc ( sizeof ( uschar * ) * ( count + 1 ) ) ; if ( environ ) for ( p = USS environ ; * p ; p ++ ) if ( Ustrncmp ( * p , \"TZ=\" , 3 ) != 0 ) * newp ++ = * p ; if ( timezone_string ) { * newp = store_malloc ( Ustrlen ( timezone_string ) + 4 ) ; sprintf ( CS * newp ++ , \"TZ=%s\" , timezone_string ) ; } * newp = NULL ; environ = CSS new ; tzset ( ) ; DEBUG ( D_any ) debug_printf ( \"Reset<S2SV_blank>TZ<S2SV_blank>to<S2SV_blank>%s:<S2SV_blank>time<S2SV_blank>is<S2SV_blank>%s\\\\n\" , timezone_string , tod_stamp ( tod_log ) ) ; } } if ( removed_privilege && ( ! trusted_config || opt_D_used ) && real_uid == exim_uid ) if ( deliver_drop_privilege ) really_exim = TRUE ; else log_write ( 0 , LOG_MAIN | LOG_PANIC , \"exim<S2SV_blank>user<S2SV_blank>lost<S2SV_blank>privilege<S2SV_blank>for<S2SV_blank>using<S2SV_blank>%s<S2SV_blank>option\" , trusted_config ? \"-D\" : \"-C\" ) ; # ifdef EXIM_PERL if ( perl_start_option != 0 ) opt_perl_at_start = ( perl_start_option > 0 ) ; if ( opt_perl_at_start && opt_perl_startup != NULL ) { uschar * errstr ; DEBUG ( D_any ) debug_printf ( \"Starting<S2SV_blank>Perl<S2SV_blank>interpreter\\\\n\" ) ; errstr = init_perl ( opt_perl_startup ) ; if ( errstr != NULL ) { fprintf ( stderr , \"exim:<S2SV_blank>error<S2SV_blank>in<S2SV_blank>perl_startup<S2SV_blank>code:<S2SV_blank>%s\\\\n\" , errstr ) ; return EXIT_FAILURE ; } opt_perl_started = TRUE ; } # endif if ( ( ( debug_selector & D_any ) != 0 || LOGGING ( arguments ) ) && really_exim && ! list_options && ! checking ) { int i ; uschar * p = big_buffer ; Ustrcpy ( p , \"cwd=<S2SV_blank>(failed)\" ) ; Ustrncpy ( p + 4 , initial_cwd , big_buffer_size - 5 ) ; while ( * p ) p ++ ; ( void ) string_format ( p , big_buffer_size - ( p - big_buffer ) , \"<S2SV_blank>%d<S2SV_blank>args:\" , argc ) ; while ( * p ) p ++ ; for ( i = 0 ; i < argc ; i ++ ) { int len = Ustrlen ( argv [ i ] ) ; const uschar * printing ; uschar * quote ; if ( p + len + 8 >= big_buffer + big_buffer_size ) { Ustrcpy ( p , \"<S2SV_blank>...\" ) ; log_write ( 0 , LOG_MAIN , \"%s\" , big_buffer ) ; Ustrcpy ( big_buffer , \"...\" ) ; p = big_buffer + 3 ; } printing = string_printing ( argv [ i ] ) ; if ( printing [ 0 ] == 0 ) quote = US \"\\\\\"\" ; else { const uschar * pp = printing ; quote = US \"\" ; while ( * pp != 0 ) if ( isspace ( * pp ++ ) ) { quote = US \"\\\\\"\" ; break ; } } sprintf ( CS p , \"<S2SV_blank>%s%.*s%s\" , quote , ( int ) ( big_buffer_size - ( p - big_buffer ) - 4 ) , printing , quote ) ; while ( * p ) p ++ ; } if ( LOGGING ( arguments ) ) log_write ( 0 , LOG_MAIN , \"%s\" , big_buffer ) ; else debug_printf ( \"%s\\\\n\" , big_buffer ) ; } if ( Uchdir ( spool_directory ) != 0 ) { int dummy ; ( void ) directory_make ( spool_directory , US \"\" , SPOOL_DIRECTORY_MODE , FALSE ) ; dummy = Uchdir ( spool_directory ) ; } if ( bi_option ) { ( void ) fclose ( config_file ) ; if ( bi_command != NULL ) { int i = 0 ; uschar * argv [ 3 ] ; argv [ i ++ ] = bi_command ; if ( alias_arg != NULL ) argv [ i ++ ] = alias_arg ; argv [ i ++ ] = NULL ; setgroups ( group_count , group_list ) ; exim_setugid ( real_uid , real_gid , FALSE , US \"running<S2SV_blank>bi_command\" ) ; DEBUG ( D_exec ) debug_printf ( \"exec<S2SV_blank>%.256s<S2SV_blank>%.256s\\\\n\" , argv [ 0 ] , ( argv [ 1 ] == NULL ) ? US \"\" : argv [ 1 ] ) ; execv ( CS argv [ 0 ] , ( char * const * ) argv ) ; fprintf ( stderr , \"exim:<S2SV_blank>exec<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; exit ( EXIT_FAILURE ) ; } else { DEBUG ( D_any ) debug_printf ( \"-bi<S2SV_blank>used<S2SV_blank>but<S2SV_blank>bi_command<S2SV_blank>not<S2SV_blank>set;<S2SV_blank>exiting\\\\n\" ) ; exit ( EXIT_SUCCESS ) ; } } if ( trusted_caller ) DEBUG ( D_any ) debug_printf ( \"trusted<S2SV_blank>user\\\\n\" ) ; if ( admin_user ) DEBUG ( D_any ) debug_printf ( \"admin<S2SV_blank>user\\\\n\" ) ; if ( ! admin_user ) { BOOL debugset = ( debug_selector & ~ D_v ) != 0 ; if ( deliver_give_up || daemon_listen || malware_test_file || ( count_queue && queue_list_requires_admin ) || ( list_queue && queue_list_requires_admin ) || ( queue_interval >= 0 && prod_requires_admin ) || ( debugset && ! running_in_test_harness ) ) { fprintf ( stderr , \"exim:%s<S2SV_blank>permission<S2SV_blank>denied\\\\n\" , debugset ? \"<S2SV_blank>debugging\" : \"\" ) ; exit ( EXIT_FAILURE ) ; } } if ( real_uid != root_uid && real_uid != exim_uid && ( continue_hostname != NULL || ( dont_deliver && ( queue_interval >= 0 || daemon_listen || msg_action_arg > 0 ) ) ) && ! running_in_test_harness ) { fprintf ( stderr , \"exim:<S2SV_blank>Permission<S2SV_blank>denied\\\\n\" ) ; return EXIT_FAILURE ; } if ( ! trusted_caller && ! checking ) { sender_host_name = sender_host_address = interface_address = sender_ident = received_protocol = NULL ; sender_host_port = interface_port = 0 ; sender_host_authenticated = authenticated_sender = authenticated_id = NULL ; } else { if ( sender_host_address != NULL ) sender_host_port = check_port ( sender_host_address ) ; if ( interface_address != NULL ) interface_port = check_port ( interface_address ) ; } if ( flag_G ) { if ( trusted_caller ) { suppress_local_fixups = suppress_local_fixups_default = TRUE ; DEBUG ( D_acl ) debug_printf ( \"suppress_local_fixups<S2SV_blank>forced<S2SV_blank>on<S2SV_blank>by<S2SV_blank>-G\\\\n\" ) ; } else { fprintf ( stderr , \"exim:<S2SV_blank>permission<S2SV_blank>denied<S2SV_blank>(-G<S2SV_blank>requires<S2SV_blank>a<S2SV_blank>trusted<S2SV_blank>user)\\\\n\" ) ; return EXIT_FAILURE ; } } if ( smtp_input ) { union sockaddr_46 inetd_sock ; EXIM_SOCKLEN_T size = sizeof ( inetd_sock ) ; if ( getpeername ( 0 , ( struct sockaddr * ) ( & inetd_sock ) , & size ) == 0 ) { int family = ( ( struct sockaddr * ) ( & inetd_sock ) ) -> sa_family ; if ( family == AF_INET || family == AF_INET6 ) { union sockaddr_46 interface_sock ; size = sizeof ( interface_sock ) ; if ( getsockname ( 0 , ( struct sockaddr * ) ( & interface_sock ) , & size ) == 0 ) interface_address = host_ntoa ( - 1 , & interface_sock , NULL , & interface_port ) ; if ( host_is_tls_on_connect_port ( interface_port ) ) tls_in . on_connect = TRUE ; if ( real_uid == root_uid || real_uid == exim_uid || interface_port < 1024 ) { is_inetd = TRUE ; sender_host_address = host_ntoa ( - 1 , ( struct sockaddr * ) ( & inetd_sock ) , NULL , & sender_host_port ) ; if ( mua_wrapper ) log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"Input<S2SV_blank>from<S2SV_blank>\" \"inetd<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>when<S2SV_blank>mua_wrapper<S2SV_blank>is<S2SV_blank>set\" ) ; } else { fprintf ( stderr , \"exim:<S2SV_blank>Permission<S2SV_blank>denied<S2SV_blank>(unprivileged<S2SV_blank>user,<S2SV_blank>unprivileged<S2SV_blank>port)\\\\n\" ) ; return EXIT_FAILURE ; } } } } # ifdef LOAD_AVG_NEEDS_ROOT if ( receiving_message && ( queue_only_load >= 0 || ( is_inetd && smtp_load_reserve >= 0 ) ) ) { load_average = OS_GETLOADAVG ( ) ; } # endif if ( queue_only_set && ( queue_only_override || arg_queue_only ) ) queue_only = arg_queue_only ; if ( arg_receive_timeout >= 0 ) receive_timeout = arg_receive_timeout ; if ( arg_smtp_receive_timeout >= 0 ) smtp_receive_timeout = arg_smtp_receive_timeout ; if ( ! unprivileged && ! removed_privilege && ! daemon_listen && queue_interval <= 0 && ( deliver_drop_privilege || ( queue_interval < 0 && ( msg_action_arg < 0 || msg_action != MSG_DELIVER ) && ( ! checking || ! address_test_mode ) ) ) ) exim_setugid ( exim_uid , exim_gid , TRUE , US \"privilege<S2SV_blank>not<S2SV_blank>needed\" ) ; else { int rv ; rv = setgid ( exim_gid ) ; if ( rv == - 1 ) if ( ! ( unprivileged || removed_privilege ) ) { fprintf ( stderr , \"exim:<S2SV_blank>changing<S2SV_blank>group<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; exit ( EXIT_FAILURE ) ; } else DEBUG ( D_any ) debug_printf ( \"changing<S2SV_blank>group<S2SV_blank>to<S2SV_blank>%ld<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , ( long int ) exim_gid , strerror ( errno ) ) ; } if ( malware_test_file ) { # ifdef WITH_CONTENT_SCAN int result ; set_process_info ( \"scanning<S2SV_blank>file<S2SV_blank>for<S2SV_blank>malware\" ) ; result = malware_in_file ( malware_test_file ) ; if ( result == FAIL ) { printf ( \"No<S2SV_blank>malware<S2SV_blank>found.\\\\n\" ) ; exit ( EXIT_SUCCESS ) ; } if ( result != OK ) { printf ( \"Malware<S2SV_blank>lookup<S2SV_blank>returned<S2SV_blank>non-okay/fail:<S2SV_blank>%d\\\\n\" , result ) ; exit ( EXIT_FAILURE ) ; } if ( malware_name ) printf ( \"Malware<S2SV_blank>found:<S2SV_blank>%s\\\\n\" , malware_name ) ; else printf ( \"Malware<S2SV_blank>scan<S2SV_blank>detected<S2SV_blank>malware<S2SV_blank>of<S2SV_blank>unknown<S2SV_blank>name.\\\\n\" ) ; # else printf ( \"Malware<S2SV_blank>scanning<S2SV_blank>not<S2SV_blank>enabled<S2SV_blank>at<S2SV_blank>compile<S2SV_blank>time.\\\\n\" ) ; # endif exit ( EXIT_FAILURE ) ; } if ( list_queue ) { set_process_info ( \"listing<S2SV_blank>the<S2SV_blank>queue\" ) ; queue_list ( list_queue_option , argv + recipients_arg , argc - recipients_arg ) ; exit ( EXIT_SUCCESS ) ; } if ( count_queue ) { set_process_info ( \"counting<S2SV_blank>the<S2SV_blank>queue\" ) ; queue_count ( ) ; exit ( EXIT_SUCCESS ) ; } if ( msg_action_arg > 0 && msg_action != MSG_DELIVER && msg_action != MSG_LOAD ) { int yield = EXIT_SUCCESS ; set_process_info ( \"acting<S2SV_blank>on<S2SV_blank>specified<S2SV_blank>messages\" ) ; if ( ! one_msg_action ) { for ( i = msg_action_arg ; i < argc ; i ++ ) if ( ! queue_action ( argv [ i ] , msg_action , NULL , 0 , 0 ) ) yield = EXIT_FAILURE ; } else if ( ! queue_action ( argv [ msg_action_arg ] , msg_action , argv , argc , recipients_arg ) ) yield = EXIT_FAILURE ; exit ( yield ) ; } readconf_rest ( ) ; store_pool = POOL_MAIN ; if ( test_retry_arg >= 0 ) { retry_config * yield ; int basic_errno = 0 ; int more_errno = 0 ; uschar * s1 , * s2 ; if ( test_retry_arg >= argc ) { printf ( \"-brt<S2SV_blank>needs<S2SV_blank>a<S2SV_blank>domain<S2SV_blank>or<S2SV_blank>address<S2SV_blank>argument\\\\n\" ) ; exim_exit ( EXIT_FAILURE ) ; } s1 = argv [ test_retry_arg ++ ] ; s2 = NULL ; if ( Ustrchr ( s1 , '@' ) == NULL && Ustrchr ( s1 , '.' ) == NULL ) { printf ( \"Warning:<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>contains<S2SV_blank>no<S2SV_blank>\\'@\\'<S2SV_blank>and<S2SV_blank>no<S2SV_blank>\\'.\\'<S2SV_blank>characters.<S2SV_blank>It<S2SV_blank>is<S2SV_blank>\" \"being<S2SV_blank>\\\\ntreated<S2SV_blank>as<S2SV_blank>a<S2SV_blank>one-component<S2SV_blank>domain,<S2SV_blank>not<S2SV_blank>as<S2SV_blank>a<S2SV_blank>local<S2SV_blank>part.\\\\n\\\\n\" , s1 ) ; } if ( test_retry_arg < argc && Ustrchr ( argv [ test_retry_arg ] , '.' ) != NULL ) s2 = argv [ test_retry_arg ++ ] ; if ( test_retry_arg < argc ) { uschar * ss = argv [ test_retry_arg ] ; uschar * error = readconf_retry_error ( ss , ss + Ustrlen ( ss ) , & basic_errno , & more_errno ) ; if ( error != NULL ) { printf ( \"%s\\\\n\" , CS error ) ; return EXIT_FAILURE ; } if ( basic_errno == ERRNO_MAIL4XX || basic_errno == ERRNO_RCPT4XX || basic_errno == ERRNO_DATA4XX ) { int code = ( more_errno >> 8 ) & 255 ; if ( code == 255 ) more_errno = ( more_errno & 0xffff00ff ) | ( 21 << 8 ) ; else if ( code > 100 ) more_errno = ( more_errno & 0xffff00ff ) | ( ( code - 96 ) << 8 ) ; } } yield = retry_find_config ( s1 , s2 , basic_errno , more_errno ) ; if ( yield == NULL ) printf ( \"No<S2SV_blank>retry<S2SV_blank>information<S2SV_blank>found\\\\n\" ) ; else { retry_rule * r ; more_errno = yield -> more_errno ; printf ( \"Retry<S2SV_blank>rule:<S2SV_blank>%s<S2SV_blank><S2SV_blank>\" , yield -> pattern ) ; if ( yield -> basic_errno == ERRNO_EXIMQUOTA ) { printf ( \"quota%s%s<S2SV_blank><S2SV_blank>\" , ( more_errno > 0 ) ? \"_\" : \"\" , ( more_errno > 0 ) ? readconf_printtime ( more_errno ) : US \"\" ) ; } else if ( yield -> basic_errno == ECONNREFUSED ) { printf ( \"refused%s%s<S2SV_blank><S2SV_blank>\" , ( more_errno > 0 ) ? \"_\" : \"\" , ( more_errno == 'M' ) ? \"MX\" : ( more_errno == 'A' ) ? \"A\" : \"\" ) ; } else if ( yield -> basic_errno == ETIMEDOUT ) { printf ( \"timeout\" ) ; if ( ( more_errno & RTEF_CTOUT ) != 0 ) printf ( \"_connect\" ) ; more_errno &= 255 ; if ( more_errno != 0 ) printf ( \"_%s\" , ( more_errno == 'M' ) ? \"MX\" : \"A\" ) ; printf ( \"<S2SV_blank><S2SV_blank>\" ) ; } else if ( yield -> basic_errno == ERRNO_AUTHFAIL ) printf ( \"auth_failed<S2SV_blank><S2SV_blank>\" ) ; else printf ( \"*<S2SV_blank><S2SV_blank>\" ) ; for ( r = yield -> rules ; r != NULL ; r = r -> next ) { printf ( \"%c,%s\" , r -> rule , readconf_printtime ( r -> timeout ) ) ; printf ( \",%s\" , readconf_printtime ( r -> p1 ) ) ; if ( r -> rule == 'G' ) { int x = r -> p2 ; int f = x % 1000 ; int d = 100 ; printf ( \",%d.\" , x / 1000 ) ; do { printf ( \"%d\" , f / d ) ; f %= d ; d /= 10 ; } while ( f != 0 ) ; } printf ( \";<S2SV_blank>\" ) ; } printf ( \"\\\\n\" ) ; } exim_exit ( EXIT_SUCCESS ) ; } if ( list_options ) { set_process_info ( \"listing<S2SV_blank>variables\" ) ; if ( recipients_arg >= argc ) readconf_print ( US \"all\" , NULL , flag_n ) ; else for ( i = recipients_arg ; i < argc ; i ++ ) { if ( i < argc - 1 && ( Ustrcmp ( argv [ i ] , \"router\" ) == 0 || Ustrcmp ( argv [ i ] , \"transport\" ) == 0 || Ustrcmp ( argv [ i ] , \"authenticator\" ) == 0 || Ustrcmp ( argv [ i ] , \"macro\" ) == 0 || Ustrcmp ( argv [ i ] , \"environment\" ) == 0 ) ) { readconf_print ( argv [ i + 1 ] , argv [ i ] , flag_n ) ; i ++ ; } else readconf_print ( argv [ i ] , NULL , flag_n ) ; } exim_exit ( EXIT_SUCCESS ) ; } if ( list_config ) { set_process_info ( \"listing<S2SV_blank>config\" ) ; readconf_print ( US \"config\" , NULL , flag_n ) ; exim_exit ( EXIT_SUCCESS ) ; } # ifndef DISABLE_DKIM dkim_exim_init ( ) ; # endif deliver_init ( ) ; if ( msg_action_arg > 0 && msg_action != MSG_LOAD ) { if ( prod_requires_admin && ! admin_user ) { fprintf ( stderr , \"exim:<S2SV_blank>Permission<S2SV_blank>denied\\\\n\" ) ; exim_exit ( EXIT_FAILURE ) ; } set_process_info ( \"delivering<S2SV_blank>specified<S2SV_blank>messages\" ) ; if ( deliver_give_up ) forced_delivery = deliver_force_thaw = TRUE ; for ( i = msg_action_arg ; i < argc ; i ++ ) { int status ; pid_t pid ; if ( i == argc - 1 ) ( void ) deliver_message ( argv [ i ] , forced_delivery , deliver_give_up ) ; else if ( ( pid = fork ( ) ) == 0 ) { ( void ) deliver_message ( argv [ i ] , forced_delivery , deliver_give_up ) ; _exit ( EXIT_SUCCESS ) ; } else if ( pid < 0 ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>fork<S2SV_blank>delivery<S2SV_blank>process<S2SV_blank>for<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , argv [ i ] , strerror ( errno ) ) ; exim_exit ( EXIT_FAILURE ) ; } else wait ( & status ) ; } exim_exit ( EXIT_SUCCESS ) ; } if ( queue_interval == 0 && ! daemon_listen ) { DEBUG ( D_queue_run ) debug_printf ( \"Single<S2SV_blank>queue<S2SV_blank>run%s%s%s%s\\\\n\" , ( start_queue_run_id == NULL ) ? US \"\" : US \"<S2SV_blank>starting<S2SV_blank>at<S2SV_blank>\" , ( start_queue_run_id == NULL ) ? US \"\" : start_queue_run_id , ( stop_queue_run_id == NULL ) ? US \"\" : US \"<S2SV_blank>stopping<S2SV_blank>at<S2SV_blank>\" , ( stop_queue_run_id == NULL ) ? US \"\" : stop_queue_run_id ) ; if ( * queue_name ) set_process_info ( \"running<S2SV_blank>the<S2SV_blank>\\'%s\\'<S2SV_blank>queue<S2SV_blank>(single<S2SV_blank>queue<S2SV_blank>run)\" , queue_name ) ; else set_process_info ( \"running<S2SV_blank>the<S2SV_blank>queue<S2SV_blank>(single<S2SV_blank>queue<S2SV_blank>run)\" ) ; queue_run ( start_queue_run_id , stop_queue_run_id , FALSE ) ; exim_exit ( EXIT_SUCCESS ) ; } for ( i = 0 ; ; ) { if ( ( pw = getpwuid ( real_uid ) ) != NULL ) { originator_login = string_copy ( US pw -> pw_name ) ; originator_home = string_copy ( US pw -> pw_dir ) ; if ( originator_name == NULL ) { if ( sender_address == NULL || ( ! trusted_caller && filter_test == FTEST_NONE ) ) { uschar * name = US pw -> pw_gecos ; uschar * amp = Ustrchr ( name , '&' ) ; uschar buffer [ 256 ] ; if ( amp != NULL ) { int loffset ; string_format ( buffer , sizeof ( buffer ) , \"%.*s%n%s%s\" , amp - name , name , & loffset , originator_login , amp + 1 ) ; buffer [ loffset ] = toupper ( buffer [ loffset ] ) ; name = buffer ; } if ( gecos_pattern != NULL && gecos_name != NULL ) { const pcre * re ; re = regex_must_compile ( gecos_pattern , FALSE , TRUE ) ; if ( regex_match_and_setup ( re , name , 0 , - 1 ) ) { uschar * new_name = expand_string ( gecos_name ) ; expand_nmax = - 1 ; if ( new_name != NULL ) { DEBUG ( D_receive ) debug_printf ( \"user<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>extracted<S2SV_blank>from<S2SV_blank>\" \"gecos<S2SV_blank>field<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , new_name , name ) ; name = new_name ; } else DEBUG ( D_receive ) debug_printf ( \"failed<S2SV_blank>to<S2SV_blank>expand<S2SV_blank>gecos_name<S2SV_blank>string<S2SV_blank>\" \"\\\\\"%s\\\\\":<S2SV_blank>%s\\\\n\" , gecos_name , expand_string_message ) ; } else DEBUG ( D_receive ) debug_printf ( \"gecos_pattern<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>did<S2SV_blank>not<S2SV_blank>match<S2SV_blank>\" \"gecos<S2SV_blank>field<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , gecos_pattern , name ) ; store_free ( ( void * ) re ) ; } originator_name = string_copy ( name ) ; } else originator_name = US \"\" ; } break ; } if ( ++ i > finduser_retries ) break ; sleep ( 1 ) ; } if ( originator_login == NULL || running_in_test_harness ) { if ( unknown_login != NULL ) { originator_login = expand_string ( unknown_login ) ; if ( originator_name == NULL && unknown_username != NULL ) originator_name = expand_string ( unknown_username ) ; if ( originator_name == NULL ) originator_name = US \"\" ; } if ( originator_login == NULL ) log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>user<S2SV_blank>name<S2SV_blank>for<S2SV_blank>uid<S2SV_blank>%d\" , ( int ) real_uid ) ; } originator_name = string_copy ( parse_fix_phrase ( originator_name , Ustrlen ( originator_name ) , big_buffer , big_buffer_size ) ) ; originator_uid = real_uid ; originator_gid = real_gid ; DEBUG ( D_receive ) debug_printf ( \"originator:<S2SV_blank>uid=%d<S2SV_blank>gid=%d<S2SV_blank>login=%s<S2SV_blank>name=%s\\\\n\" , ( int ) originator_uid , ( int ) originator_gid , originator_login , originator_name ) ; if ( daemon_listen || inetd_wait_mode || queue_interval > 0 ) { if ( mua_wrapper ) { fprintf ( stderr , \"Daemon<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>run<S2SV_blank>when<S2SV_blank>mua_wrapper<S2SV_blank>is<S2SV_blank>set\\\\n\" ) ; log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"Daemon<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>run<S2SV_blank>when<S2SV_blank>\" \"mua_wrapper<S2SV_blank>is<S2SV_blank>set\" ) ; } daemon_go ( ) ; } if ( sender_ident == NULL ) sender_ident = originator_login ; else if ( sender_ident [ 0 ] == 0 ) sender_ident = NULL ; if ( test_rewrite_arg >= 0 ) { really_exim = FALSE ; if ( test_rewrite_arg >= argc ) { printf ( \"-brw<S2SV_blank>needs<S2SV_blank>an<S2SV_blank>address<S2SV_blank>argument\\\\n\" ) ; exim_exit ( EXIT_FAILURE ) ; } rewrite_test ( argv [ test_rewrite_arg ] ) ; exim_exit ( EXIT_SUCCESS ) ; } if ( ( sender_address == NULL && ! smtp_input ) || ( ! trusted_caller && filter_test == FTEST_NONE ) ) { sender_local = TRUE ; if ( authenticated_sender == NULL && ! host_checking ) authenticated_sender = string_sprintf ( \"%s@%s\" , originator_login , qualify_domain_sender ) ; if ( authenticated_id == NULL && ! host_checking ) authenticated_id = originator_login ; } if ( ( ! smtp_input && sender_address == NULL ) || ! receive_check_set_sender ( sender_address ) ) { if ( sender_address == NULL || ( sender_address [ 0 ] != 0 && ! checking ) ) { sender_address = originator_login ; sender_address_forced = FALSE ; sender_address_domain = 0 ; } } sender_set_untrusted = sender_address != originator_login && ! trusted_caller ; if ( sender_address != NULL && sender_address [ 0 ] != 0 && sender_address_domain == 0 ) sender_address = string_sprintf ( \"%s@%s\" , local_part_quote ( sender_address ) , qualify_domain_sender ) ; DEBUG ( D_receive ) debug_printf ( \"sender<S2SV_blank>address<S2SV_blank>=<S2SV_blank>%s\\\\n\" , sender_address ) ; if ( verify_address_mode || address_test_mode ) { int exit_value = 0 ; int flags = vopt_qualify ; if ( verify_address_mode ) { if ( ! verify_as_sender ) flags |= vopt_is_recipient ; DEBUG ( D_verify ) debug_print_ids ( US \"Verifying:\" ) ; } else { flags |= vopt_is_recipient ; debug_selector |= D_v ; debug_file = stderr ; debug_fd = fileno ( debug_file ) ; DEBUG ( D_verify ) debug_print_ids ( US \"Address<S2SV_blank>testing:\" ) ; } if ( recipients_arg < argc ) { while ( recipients_arg < argc ) { uschar * s = argv [ recipients_arg ++ ] ; while ( * s != 0 ) { BOOL finished = FALSE ; uschar * ss = parse_find_address_end ( s , FALSE ) ; if ( * ss == ',' ) * ss = 0 ; else finished = TRUE ; test_address ( s , flags , & exit_value ) ; s = ss ; if ( ! finished ) while ( * ( ++ s ) != 0 && ( * s == ',' || isspace ( * s ) ) ) ; } } } else for ( ; ; ) { uschar * s = get_stdinput ( NULL , NULL ) ; if ( s == NULL ) break ; test_address ( s , flags , & exit_value ) ; } route_tidyup ( ) ; exim_exit ( exit_value ) ; } if ( expansion_test ) { dns_init ( FALSE , FALSE , FALSE ) ; if ( msg_action_arg > 0 && msg_action == MSG_LOAD ) { uschar spoolname [ 256 ] ; if ( ! admin_user ) { fprintf ( stderr , \"exim:<S2SV_blank>permission<S2SV_blank>denied\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } message_id = argv [ msg_action_arg ] ; ( void ) string_format ( spoolname , sizeof ( spoolname ) , \"%s-H\" , message_id ) ; if ( ( deliver_datafile = spool_open_datafile ( message_id ) ) < 0 ) printf ( \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>message<S2SV_blank>datafile<S2SV_blank>%s\\\\n\" , message_id ) ; if ( spool_read_header ( spoolname , TRUE , FALSE ) != spool_read_OK ) printf ( \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>message<S2SV_blank>%s\\\\n\" , message_id ) ; } else if ( expansion_test_message != NULL ) { int save_stdin = dup ( 0 ) ; int fd = Uopen ( expansion_test_message , O_RDONLY , 0 ) ; if ( fd < 0 ) { fprintf ( stderr , \"exim:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , expansion_test_message , strerror ( errno ) ) ; return EXIT_FAILURE ; } ( void ) dup2 ( fd , 0 ) ; filter_test = FTEST_USER ; message_ended = END_NOTENDED ; read_message_body ( receive_msg ( extract_recipients ) ) ; message_linecount += body_linecount ; ( void ) dup2 ( save_stdin , 0 ) ; ( void ) close ( save_stdin ) ; clearerr ( stdin ) ; } enable_dollar_recipients = TRUE ; if ( recipients_arg < argc ) { while ( recipients_arg < argc ) { uschar * s = argv [ recipients_arg ++ ] ; uschar * ss = expand_string ( s ) ; if ( ss == NULL ) printf ( \"Failed:<S2SV_blank>%s\\\\n\" , expand_string_message ) ; else printf ( \"%s\\\\n\" , CS ss ) ; } } else { char * ( * fn_readline ) ( const char * ) = NULL ; void ( * fn_addhist ) ( const char * ) = NULL ; # ifdef USE_READLINE void * dlhandle = set_readline ( & fn_readline , & fn_addhist ) ; # endif for ( ; ; ) { uschar * ss ; uschar * source = get_stdinput ( fn_readline , fn_addhist ) ; if ( source == NULL ) break ; ss = expand_string ( source ) ; if ( ss == NULL ) printf ( \"Failed:<S2SV_blank>%s\\\\n\" , expand_string_message ) ; else printf ( \"%s\\\\n\" , CS ss ) ; } # ifdef USE_READLINE if ( dlhandle != NULL ) dlclose ( dlhandle ) ; # endif } if ( deliver_datafile >= 0 ) { ( void ) close ( deliver_datafile ) ; deliver_datafile = - 1 ; } exim_exit ( EXIT_SUCCESS ) ; } smtp_active_hostname = primary_hostname ; if ( raw_active_hostname != NULL ) { uschar * nah = expand_string ( raw_active_hostname ) ; if ( nah == NULL ) { if ( ! expand_string_forcedfail ) log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"failed<S2SV_blank>to<S2SV_blank>expand<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>\" \"(smtp_active_hostname):<S2SV_blank>%s\" , raw_active_hostname , expand_string_message ) ; } else if ( nah [ 0 ] != 0 ) smtp_active_hostname = nah ; } if ( host_checking ) { int x [ 4 ] ; int size ; if ( ! sender_ident_set ) { sender_ident = NULL ; if ( running_in_test_harness && sender_host_port != 0 && interface_address != NULL && interface_port != 0 ) verify_get_ident ( 1413 ) ; } size = host_aton ( sender_host_address , x ) ; sender_host_address = store_get ( 48 ) ; ( void ) host_nmtoa ( size , x , - 1 , sender_host_address , ':' ) ; host_build_sender_fullhost ( ) ; smtp_input = TRUE ; smtp_in = stdin ; smtp_out = stdout ; sender_local = FALSE ; sender_host_notsocket = TRUE ; debug_file = stderr ; debug_fd = fileno ( debug_file ) ; fprintf ( stdout , \"\\\\n****<S2SV_blank>SMTP<S2SV_blank>testing<S2SV_blank>session<S2SV_blank>as<S2SV_blank>if<S2SV_blank>from<S2SV_blank>host<S2SV_blank>%s\\\\n\" \"****<S2SV_blank>but<S2SV_blank>without<S2SV_blank>any<S2SV_blank>ident<S2SV_blank>(RFC<S2SV_blank>1413)<S2SV_blank>callback.\\\\n\" \"****<S2SV_blank>This<S2SV_blank>is<S2SV_blank>not<S2SV_blank>for<S2SV_blank>real!\\\\n\\\\n\" , sender_host_address ) ; memset ( sender_host_cache , 0 , sizeof ( sender_host_cache ) ) ; if ( verify_check_host ( & hosts_connection_nolog ) == OK ) BIT_CLEAR ( log_selector , log_selector_size , Li_smtp_connection ) ; log_write ( L_smtp_connection , LOG_MAIN , \"%s\" , smtp_get_connection_info ( ) ) ; if ( smtp_start_session ( ) ) { for ( reset_point = store_get ( 0 ) ; ; store_reset ( reset_point ) ) { if ( smtp_setup_msg ( ) <= 0 ) break ; if ( ! receive_msg ( FALSE ) ) break ; return_path = sender_address = NULL ; dnslist_domain = dnslist_matched = NULL ; # ifndef DISABLE_DKIM dkim_cur_signer = NULL ; # endif acl_var_m = NULL ; deliver_localpart_orig = NULL ; deliver_domain_orig = NULL ; callout_address = sending_ip_address = NULL ; sender_rate = sender_rate_limit = sender_rate_period = NULL ; } smtp_log_no_mail ( ) ; } exim_exit ( EXIT_SUCCESS ) ; } if ( recipients_arg >= argc && ! extract_recipients && ! smtp_input ) { if ( version_printed ) { printf ( \"Configuration<S2SV_blank>file<S2SV_blank>is<S2SV_blank>%s\\\\n\" , config_main_filename ) ; return EXIT_SUCCESS ; } if ( info_flag != CMDINFO_NONE ) { show_exim_information ( info_flag , info_stdout ? stdout : stderr ) ; return info_stdout ? EXIT_SUCCESS : EXIT_FAILURE ; } if ( filter_test == FTEST_NONE ) exim_usage ( called_as ) ; } if ( mua_wrapper ) { synchronous_delivery = TRUE ; arg_error_handling = ERRORS_STDERR ; remote_max_parallel = 1 ; deliver_drop_privilege = TRUE ; queue_smtp = FALSE ; queue_smtp_domains = NULL ; # ifdef SUPPORT_I18N message_utf8_downconvert = - 1 ; # endif } if ( ! smtp_input ) error_handling = arg_error_handling ; else if ( is_inetd ) { ( void ) fclose ( stderr ) ; exim_nullstd ( ) ; verify_get_ident ( IDENT_PORT ) ; host_build_sender_fullhost ( ) ; set_process_info ( \"handling<S2SV_blank>incoming<S2SV_blank>connection<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>via<S2SV_blank>inetd\" , sender_fullhost ) ; } if ( sender_host_address != NULL && sender_fullhost == NULL ) { host_build_sender_fullhost ( ) ; set_process_info ( \"handling<S2SV_blank>incoming<S2SV_blank>connection<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>via<S2SV_blank>-oMa\" , sender_fullhost ) ; sender_host_notsocket = TRUE ; } else if ( ! is_inetd ) sender_host_unknown = TRUE ; if ( fstat ( 1 , & statbuf ) < 0 ) ( void ) dup2 ( 0 , 1 ) ; if ( smtp_input ) { if ( ! is_inetd ) set_process_info ( \"accepting<S2SV_blank>a<S2SV_blank>local<S2SV_blank>%sSMTP<S2SV_blank>message<S2SV_blank>from<S2SV_blank><%s>\" , smtp_batched_input ? \"batched<S2SV_blank>\" : \"\" , ( sender_address != NULL ) ? sender_address : originator_login ) ; } else { int old_pool = store_pool ; store_pool = POOL_PERM ; if ( ! received_protocol ) received_protocol = string_sprintf ( \"local%s\" , called_as ) ; store_pool = old_pool ; set_process_info ( \"accepting<S2SV_blank>a<S2SV_blank>local<S2SV_blank>non-SMTP<S2SV_blank>message<S2SV_blank>from<S2SV_blank><%s>\" , sender_address ) ; } queue_check_only ( ) ; session_local_queue_only = queue_only ; if ( ( ! smtp_input || smtp_batched_input ) && ! receive_check_fs ( 0 ) ) { fprintf ( stderr , \"exim:<S2SV_blank>insufficient<S2SV_blank>disk<S2SV_blank>space\\\\n\" ) ; return EXIT_FAILURE ; } if ( smtp_input ) { smtp_in = stdin ; smtp_out = stdout ; memset ( sender_host_cache , 0 , sizeof ( sender_host_cache ) ) ; if ( verify_check_host ( & hosts_connection_nolog ) == OK ) BIT_CLEAR ( log_selector , log_selector_size , Li_smtp_connection ) ; log_write ( L_smtp_connection , LOG_MAIN , \"%s\" , smtp_get_connection_info ( ) ) ; if ( ! smtp_start_session ( ) ) { mac_smtp_fflush ( ) ; exim_exit ( EXIT_SUCCESS ) ; } } else { thismessage_size_limit = expand_string_integer ( message_size_limit , TRUE ) ; if ( expand_string_message ) if ( thismessage_size_limit == - 1 ) log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"failed<S2SV_blank>to<S2SV_blank>expand<S2SV_blank>\" \"message_size_limit:<S2SV_blank>%s\" , expand_string_message ) ; else log_write ( 0 , LOG_MAIN | LOG_PANIC_DIE , \"invalid<S2SV_blank>value<S2SV_blank>for<S2SV_blank>\" \"message_size_limit:<S2SV_blank>%s\" , expand_string_message ) ; } if ( ! synchronous_delivery ) { # ifdef SA_NOCLDWAIT struct sigaction act ; act . sa_handler = SIG_IGN ; sigemptyset ( & ( act . sa_mask ) ) ; act . sa_flags = SA_NOCLDWAIT ; sigaction ( SIGCHLD , & act , NULL ) ; # else signal ( SIGCHLD , SIG_IGN ) ; # endif } reset_point = store_get ( 0 ) ; real_sender_address = sender_address ; while ( more ) { message_id [ 0 ] = 0 ; if ( smtp_input ) { int rc ; if ( ( rc = smtp_setup_msg ( ) ) > 0 ) { if ( real_sender_address != NULL && ! receive_check_set_sender ( sender_address ) ) { sender_address = raw_sender = real_sender_address ; sender_address_unrewritten = NULL ; } if ( smtp_batched_input && acl_not_smtp_start != NULL ) { uschar * user_msg , * log_msg ; enable_dollar_recipients = TRUE ; ( void ) acl_check ( ACL_WHERE_NOTSMTP_START , NULL , acl_not_smtp_start , & user_msg , & log_msg ) ; enable_dollar_recipients = FALSE ; } more = receive_msg ( extract_recipients ) ; if ( message_id [ 0 ] == 0 ) { cancel_cutthrough_connection ( TRUE , US \"receive<S2SV_blank>dropped\" ) ; if ( more ) goto moreloop ; smtp_log_no_mail ( ) ; exim_exit ( EXIT_FAILURE ) ; } } else { cancel_cutthrough_connection ( TRUE , US \"message<S2SV_blank>setup<S2SV_blank>dropped\" ) ; smtp_log_no_mail ( ) ; exim_exit ( ( rc == 0 ) ? EXIT_SUCCESS : EXIT_FAILURE ) ; } } else { int i ; int rcount = 0 ; int count = argc - recipients_arg ; uschar * * list = argv + recipients_arg ; active_local_sender_retain = local_sender_retain ; active_local_from_check = local_from_check ; raw_sender = string_copy ( sender_address ) ; for ( i = 0 ; i < count ; i ++ ) { int start , end , domain ; uschar * errmess ; uschar * s = list [ i ] ; while ( * s != 0 ) { BOOL finished = FALSE ; uschar * recipient ; uschar * ss = parse_find_address_end ( s , FALSE ) ; if ( * ss == ',' ) * ss = 0 ; else finished = TRUE ; if ( recipients_max > 0 && ++ rcount > recipients_max && ! extract_recipients ) if ( error_handling == ERRORS_STDERR ) { fprintf ( stderr , \"exim:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>recipients\\\\n\" ) ; exim_exit ( EXIT_FAILURE ) ; } else { return moan_to_sender ( ERRMESS_TOOMANYRECIP , NULL , NULL , stdin , TRUE ) ? errors_sender_rc : EXIT_FAILURE ; } # ifdef SUPPORT_I18N { BOOL b = allow_utf8_domains ; allow_utf8_domains = TRUE ; # endif recipient = parse_extract_address ( s , & errmess , & start , & end , & domain , FALSE ) ; # ifdef SUPPORT_I18N if ( string_is_utf8 ( recipient ) ) message_smtputf8 = TRUE ; else allow_utf8_domains = b ; } # endif if ( domain == 0 && ! allow_unqualified_recipient ) { recipient = NULL ; errmess = US \"unqualified<S2SV_blank>recipient<S2SV_blank>address<S2SV_blank>not<S2SV_blank>allowed\" ; } if ( recipient == NULL ) { if ( error_handling == ERRORS_STDERR ) { fprintf ( stderr , \"exim:<S2SV_blank>bad<S2SV_blank>recipient<S2SV_blank>address<S2SV_blank>\\\\\"%s\\\\\":<S2SV_blank>%s\\\\n\" , string_printing ( list [ i ] ) , errmess ) ; exim_exit ( EXIT_FAILURE ) ; } else { error_block eblock ; eblock . next = NULL ; eblock . text1 = string_printing ( list [ i ] ) ; eblock . text2 = errmess ; return moan_to_sender ( ERRMESS_BADARGADDRESS , & eblock , NULL , stdin , TRUE ) ? errors_sender_rc : EXIT_FAILURE ; } } receive_add_recipient ( recipient , - 1 ) ; s = ss ; if ( ! finished ) while ( * ( ++ s ) != 0 && ( * s == ',' || isspace ( * s ) ) ) ; } } DEBUG ( D_receive ) { int i ; if ( sender_address != NULL ) debug_printf ( \"Sender:<S2SV_blank>%s\\\\n\" , sender_address ) ; if ( recipients_list != NULL ) { debug_printf ( \"Recipients:\\\\n\" ) ; for ( i = 0 ; i < recipients_count ; i ++ ) debug_printf ( \"<S2SV_blank><S2SV_blank>%s\\\\n\" , recipients_list [ i ] . address ) ; } } if ( acl_not_smtp_start ) { uschar * user_msg , * log_msg ; enable_dollar_recipients = TRUE ; ( void ) acl_check ( ACL_WHERE_NOTSMTP_START , NULL , acl_not_smtp_start , & user_msg , & log_msg ) ; enable_dollar_recipients = FALSE ; } if ( ! receive_timeout ) { struct timeval t = { 30 * 60 , 0 } ; fd_set r ; FD_ZERO ( & r ) ; FD_SET ( 0 , & r ) ; if ( select ( 1 , & r , NULL , NULL , & t ) == 0 ) mainlog_close ( ) ; } message_ended = END_NOTENDED ; more = receive_msg ( extract_recipients ) ; if ( message_id [ 0 ] == 0 ) exim_exit ( EXIT_FAILURE ) ; } if ( filter_test != FTEST_NONE ) { deliver_domain = ( ftest_domain != NULL ) ? ftest_domain : qualify_domain_recipient ; deliver_domain_orig = deliver_domain ; deliver_localpart = ( ftest_localpart != NULL ) ? ftest_localpart : originator_login ; deliver_localpart_orig = deliver_localpart ; deliver_localpart_prefix = ftest_prefix ; deliver_localpart_suffix = ftest_suffix ; deliver_home = originator_home ; if ( return_path == NULL ) { printf ( \"Return-path<S2SV_blank>copied<S2SV_blank>from<S2SV_blank>sender\\\\n\" ) ; return_path = string_copy ( sender_address ) ; } else printf ( \"Return-path<S2SV_blank>=<S2SV_blank>%s\\\\n\" , ( return_path [ 0 ] == 0 ) ? US \"<>\" : return_path ) ; printf ( \"Sender<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%s\\\\n\" , ( sender_address [ 0 ] == 0 ) ? US \"<>\" : sender_address ) ; receive_add_recipient ( string_sprintf ( \"%s%s%s@%s\" , ( ftest_prefix == NULL ) ? US \"\" : ftest_prefix , deliver_localpart , ( ftest_suffix == NULL ) ? US \"\" : ftest_suffix , deliver_domain ) , - 1 ) ; printf ( \"Recipient<S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%s\\\\n\" , recipients_list [ 0 ] . address ) ; if ( ftest_prefix != NULL ) printf ( \"Prefix<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%s\\\\n\" , ftest_prefix ) ; if ( ftest_suffix != NULL ) printf ( \"Suffix<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%s\\\\n\" , ftest_suffix ) ; if ( chdir ( \"/\" ) ) { DEBUG ( D_receive ) debug_printf ( \"chdir(\\\\\"/\\\\\")<S2SV_blank>failed\\\\n\" ) ; exim_exit ( EXIT_FAILURE ) ; } if ( ( filter_test & FTEST_SYSTEM ) != 0 ) { if ( ! filter_runtest ( filter_sfd , filter_test_sfile , TRUE , more ) ) exim_exit ( EXIT_FAILURE ) ; } memcpy ( filter_sn , filter_n , sizeof ( filter_sn ) ) ; if ( ( filter_test & FTEST_USER ) != 0 ) { if ( ! filter_runtest ( filter_ufd , filter_test_ufile , FALSE , more ) ) exim_exit ( EXIT_FAILURE ) ; } exim_exit ( EXIT_SUCCESS ) ; } if ( ! session_local_queue_only && smtp_accept_queue_per_connection > 0 && receive_messagecount > smtp_accept_queue_per_connection ) { session_local_queue_only = TRUE ; queue_only_reason = 2 ; } local_queue_only = session_local_queue_only ; if ( ! local_queue_only && queue_only_load >= 0 ) { local_queue_only = ( load_average = OS_GETLOADAVG ( ) ) > queue_only_load ; if ( local_queue_only ) { queue_only_reason = 3 ; if ( queue_only_load_latch ) session_local_queue_only = TRUE ; } } if ( mua_wrapper ) local_queue_only = queue_only_policy = deliver_freeze = FALSE ; if ( local_queue_only ) { cancel_cutthrough_connection ( TRUE , US \"no<S2SV_blank>delivery;<S2SV_blank>queueing\" ) ; switch ( queue_only_reason ) { case 2 : log_write ( L_delay_delivery , LOG_MAIN , \"no<S2SV_blank>immediate<S2SV_blank>delivery:<S2SV_blank>more<S2SV_blank>than<S2SV_blank>%d<S2SV_blank>messages<S2SV_blank>\" \"received<S2SV_blank>in<S2SV_blank>one<S2SV_blank>connection\" , smtp_accept_queue_per_connection ) ; break ; case 3 : log_write ( L_delay_delivery , LOG_MAIN , \"no<S2SV_blank>immediate<S2SV_blank>delivery:<S2SV_blank>load<S2SV_blank>average<S2SV_blank>%.2f\" , ( double ) load_average / 1000.0 ) ; break ; } } else if ( queue_only_policy || deliver_freeze ) cancel_cutthrough_connection ( TRUE , US \"no<S2SV_blank>delivery;<S2SV_blank>queueing\" ) ; else { pid_t pid ; search_tidyup ( ) ; if ( ( pid = fork ( ) ) == 0 ) { int rc ; close_unwanted ( ) ; exim_nullstd ( ) ; if ( geteuid ( ) != root_uid && ! deliver_drop_privilege && ! unprivileged ) { delivery_re_exec ( CEE_EXEC_EXIT ) ; } rc = deliver_message ( message_id , FALSE , FALSE ) ; search_tidyup ( ) ; _exit ( ( ! mua_wrapper || rc == DELIVER_MUA_SUCCEEDED ) ? EXIT_SUCCESS : EXIT_FAILURE ) ; } if ( pid < 0 ) { cancel_cutthrough_connection ( TRUE , US \"delivery<S2SV_blank>fork<S2SV_blank>failed\" ) ; log_write ( 0 , LOG_MAIN | LOG_PANIC , \"failed<S2SV_blank>to<S2SV_blank>fork<S2SV_blank>automatic<S2SV_blank>delivery<S2SV_blank>\" \"process:<S2SV_blank>%s\" , strerror ( errno ) ) ; } else { release_cutthrough_connection ( US \"msg<S2SV_blank>passed<S2SV_blank>for<S2SV_blank>delivery\" ) ; if ( synchronous_delivery ) { int status ; while ( wait ( & status ) != pid ) ; if ( ( status & 0x00ff ) != 0 ) log_write ( 0 , LOG_MAIN | LOG_PANIC , \"process<S2SV_blank>%d<S2SV_blank>crashed<S2SV_blank>with<S2SV_blank>signal<S2SV_blank>%d<S2SV_blank>while<S2SV_blank>delivering<S2SV_blank>%s\" , ( int ) pid , status & 0x00ff , message_id ) ; if ( mua_wrapper && ( status & 0xffff ) != 0 ) exim_exit ( EXIT_FAILURE ) ; } } } # ifndef SIG_IGN_WORKS while ( waitpid ( - 1 , NULL , WNOHANG ) > 0 ) ; # endif moreloop : return_path = sender_address = NULL ; authenticated_sender = NULL ; deliver_localpart_orig = NULL ; deliver_domain_orig = NULL ; deliver_host = deliver_host_address = NULL ; dnslist_domain = dnslist_matched = NULL ; # ifdef WITH_CONTENT_SCAN malware_name = NULL ; # endif callout_address = NULL ; sending_ip_address = NULL ; acl_var_m = NULL ; { int i ; for ( i = 0 ; i < REGEX_VARS ; i ++ ) regex_vars [ i ] = NULL ; } store_reset ( reset_point ) ; } exim_exit ( EXIT_SUCCESS ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) if ( received_protocol ) { fprintf ( stderr , \"received_protocol<S2SV_blank>is<S2SV_blank>set<S2SV_blank>already\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } else <S2SV_ModStart> { uschar * hn ; if ( received_protocol ) { fprintf ( stderr , \"received_protocol<S2SV_blank>is<S2SV_blank>set<S2SV_blank>already\\\\n\" ) ; exit ( EXIT_FAILURE ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static uint32_t scsi_init_iovec ( SCSIDiskReq * r ) <S2SV_StartBug> { <S2SV_EndBug> <S2SV_StartBug> r -> iov . iov_len = MIN ( r -> sector_count * 512 , SCSI_DMA_BUF_SIZE ) ; <S2SV_EndBug> qemu_iovec_init_external ( & r -> qiov , & r -> iov , 1 ) ; return r -> qiov . size / 512 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> r ) { SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; if ( ! r -> iov . iov_base ) { r -> buflen = SCSI_DMA_BUF_SIZE ; r -> iov . iov_base = qemu_blockalign ( s -> bs , r -> buflen ) ; } <S2SV_ModStart> * 512 , r -> buflen <S2SV_ModEnd> ) ; qemu_iovec_init_external\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10810\n\n```\nCWE-772 int virtio_gpu_object_create ( struct virtio_gpu_device * vgdev , unsigned long size , bool kernel , bool pinned , struct virtio_gpu_object * * bo_ptr ) { struct virtio_gpu_object * bo ; enum ttm_bo_type type ; size_t acc_size ; int ret ; if ( kernel ) type = ttm_bo_type_kernel ; else type = ttm_bo_type_device ; * bo_ptr = NULL ; acc_size = ttm_bo_dma_acc_size ( & vgdev -> mman . bdev , size , sizeof ( struct virtio_gpu_object ) ) ; bo = kzalloc ( sizeof ( struct virtio_gpu_object ) , GFP_KERNEL ) ; if ( bo == NULL ) return - ENOMEM ; size = roundup ( size , PAGE_SIZE ) ; ret = drm_gem_object_init ( vgdev -> ddev , & bo -> gem_base , size ) ; if ( ret != 0 ) <S2SV_StartBug> return ret ; <S2SV_EndBug> bo -> dumb = false ; virtio_gpu_init_ttm_placement ( bo , pinned ) ; ret = ttm_bo_init ( & vgdev -> mman . bdev , & bo -> tbo , size , type , & bo -> placement , 0 , ! kernel , NULL , acc_size , NULL , NULL , & virtio_gpu_ttm_bo_destroy ) ; if ( ret != 0 ) return ret ; * bo_ptr = bo ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != 0 ) { kfree ( bo ) ; return ret ; } <S2SV_ModEnd> bo -> dumb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_sb_rt ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_EndBug> TOKENEXTRA * * tp , int mi_row , int mi_col , <S2SV_StartBug> int output_enabled , BLOCK_SIZE bsize ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> const int bsl = b_width_log2 ( bsize ) , hbs = ( 1 << bsl ) / 4 ; <S2SV_EndBug> int ctx ; PARTITION_TYPE partition ; BLOCK_SIZE subsize ; if ( mi_row >= cm -> mi_rows || mi_col >= cm -> mi_cols ) return ; if ( bsize >= BLOCK_8X8 ) { <S2SV_StartBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> const int idx_str = xd -> mi_stride * mi_row + mi_col ; MODE_INFO * * mi_8x8 = cm -> mi_grid_visible + idx_str ; ctx = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; subsize = mi_8x8 [ 0 ] -> mbmi . sb_type ; } else { ctx = 0 ; subsize = BLOCK_4X4 ; } partition = partition_lookup [ bsl ] [ subsize ] ; <S2SV_StartBug> switch ( partition ) { <S2SV_EndBug> case PARTITION_NONE : <S2SV_StartBug> if ( output_enabled && bsize >= BLOCK_8X8 ) <S2SV_EndBug> cm -> counts . partition [ ctx ] [ PARTITION_NONE ] ++ ; <S2SV_StartBug> encode_b_rt ( cpi , tile , tp , mi_row , mi_col , output_enabled , subsize ) ; <S2SV_EndBug> break ; case PARTITION_VERT : <S2SV_StartBug> if ( output_enabled ) <S2SV_EndBug> cm -> counts . partition [ ctx ] [ PARTITION_VERT ] ++ ; * get_sb_index ( x , subsize ) = 0 ; encode_b_rt ( cpi , tile , tp , mi_row , mi_col , output_enabled , subsize ) ; <S2SV_StartBug> if ( mi_col + hbs < cm -> mi_cols ) { <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; encode_b_rt ( cpi , tile , tp , mi_row , mi_col + hbs , output_enabled , subsize ) ; } break ; case PARTITION_HORZ : <S2SV_StartBug> if ( output_enabled ) <S2SV_EndBug> cm -> counts . partition [ ctx ] [ PARTITION_HORZ ] ++ ; * get_sb_index ( x , subsize ) = 0 ; encode_b_rt ( cpi , tile , tp , mi_row , mi_col , output_enabled , subsize ) ; <S2SV_StartBug> if ( mi_row + hbs < cm -> mi_rows ) { <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; encode_b_rt ( cpi , tile , tp , mi_row + hbs , mi_col , output_enabled , subsize ) ; } break ; case PARTITION_SPLIT : subsize = get_subsize ( bsize , PARTITION_SPLIT ) ; <S2SV_StartBug> if ( output_enabled ) <S2SV_EndBug> cm -> counts . partition [ ctx ] [ PARTITION_SPLIT ] ++ ; * get_sb_index ( x , subsize ) = 0 ; <S2SV_StartBug> encode_sb_rt ( cpi , tile , tp , mi_row , mi_col , output_enabled , subsize ) ; <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; <S2SV_StartBug> encode_sb_rt ( cpi , tile , tp , mi_row , mi_col + hbs , output_enabled , <S2SV_EndBug> subsize ) ; * get_sb_index ( x , subsize ) = 2 ; <S2SV_StartBug> encode_sb_rt ( cpi , tile , tp , mi_row + hbs , mi_col , output_enabled , <S2SV_EndBug> subsize ) ; * get_sb_index ( x , subsize ) = 3 ; encode_sb_rt ( cpi , tile , tp , mi_row + hbs , mi_col + hbs , output_enabled , subsize ) ; break ; default : <S2SV_StartBug> assert ( \"Invalid<S2SV_blank>partition<S2SV_blank>type.\" ) ; <S2SV_EndBug> } if ( partition != PARTITION_SPLIT || bsize == BLOCK_8X8 ) update_partition_context ( xd , mi_row , mi_col , subsize , bsize ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , <S2SV_ModStart> , BLOCK_SIZE bsize , PC_TREE * pc_tree <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> int bsl = b_width_log2_lookup [ bsize ] <S2SV_ModEnd> , hbs = <S2SV_ModStart> BLOCK_8X8 ) { <S2SV_ModEnd> const int idx_str <S2SV_ModStart> subsize ] ; if ( output_enabled && bsize != BLOCK_4X4 ) td -> counts -> partition [ ctx ] [ partition ] ++ ; <S2SV_ModStart> case PARTITION_NONE : <S2SV_ModEnd> encode_b_rt ( cpi <S2SV_ModStart> ( cpi , td , tile , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> none <S2SV_ModEnd> ) ; break <S2SV_ModStart> case PARTITION_VERT : encode_b_rt ( cpi , td , tile , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> vertical [ 0 ] <S2SV_ModEnd> ) ; if <S2SV_ModStart> cm -> mi_cols && bsize > BLOCK_8X8 ) { encode_b_rt ( cpi , td , tile , tp , mi_row , mi_col + hbs , output_enabled , subsize , & pc_tree -> vertical [ 1 ] <S2SV_ModEnd> ) ; } <S2SV_ModStart> case PARTITION_HORZ : encode_b_rt ( cpi , td , tile , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> horizontal [ 0 ] <S2SV_ModEnd> ) ; if <S2SV_ModStart> cm -> mi_rows && bsize > BLOCK_8X8 ) { encode_b_rt ( cpi , td , tile , tp , mi_row + hbs , mi_col , output_enabled , subsize , & pc_tree -> horizontal [ 1 ] <S2SV_ModEnd> ) ; } <S2SV_ModStart> PARTITION_SPLIT ) ; encode_sb_rt ( cpi , td , tile , tp , mi_row , mi_col , output_enabled , subsize , pc_tree -> split [ 0 ] ) <S2SV_ModEnd> ; encode_sb_rt ( <S2SV_ModStart> ( cpi , td , tile , tp , mi_row , mi_col + hbs , output_enabled , subsize , pc_tree -> split [ 1 ] ) <S2SV_ModEnd> ; encode_sb_rt ( <S2SV_ModStart> ( cpi , td , tile , tp , mi_row + hbs , mi_col , output_enabled , subsize , pc_tree -> split [ 2 ] ) <S2SV_ModEnd> ; encode_sb_rt ( <S2SV_ModStart> ( cpi , td , tile , tp , mi_row + hbs , mi_col + hbs , output_enabled , subsize , pc_tree -> split [ 3 ] <S2SV_ModEnd> ) ; break <S2SV_ModStart> : assert ( 0 && \"Invalid<S2SV_blank>partition<S2SV_blank>type.\" ) ; break <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8130\n\n```\nCWE-369 void * _TIFFmalloc ( tmsize_t s ) <S2SV_StartBug> { <S2SV_EndBug> return ( malloc ( ( size_t ) s ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { if ( s == 0 ) return ( ( void * ) NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 int ParseDateTime ( char * timestr , char * lowstr , char * * field , int * ftype , int * numfields , char * * endstr ) { int nf = 0 ; char * lp = lowstr ; * endstr = timestr ; while ( * ( * endstr ) != '\\\\0' ) { <S2SV_StartBug> field [ nf ] = lp ; <S2SV_EndBug> if ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) { * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = * ( * endstr ) ++ ; if ( * ( * endstr ) == ':' ) { ftype [ nf ] = DTK_TIME ; * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) || ( * ( * endstr ) == ':' ) || ( * ( * endstr ) == '.' ) ) * lp ++ = * ( * endstr ) ++ ; } else if ( * ( * endstr ) == '-' || * ( * endstr ) == '/' || * ( * endstr ) == '.' ) { char * dp = ( * endstr ) ; * lp ++ = * ( * endstr ) ++ ; if ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) { ftype [ nf ] = ( * dp == '.' ) ? DTK_NUMBER : DTK_DATE ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = * ( * endstr ) ++ ; if ( * ( * endstr ) == * dp ) { ftype [ nf ] = DTK_DATE ; * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) || ( * ( * endstr ) == * dp ) ) * lp ++ = * ( * endstr ) ++ ; } } else { ftype [ nf ] = DTK_DATE ; while ( isalnum ( ( unsigned char ) * ( * endstr ) ) || ( * ( * endstr ) == * dp ) ) * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; } } else ftype [ nf ] = DTK_NUMBER ; } else if ( * ( * endstr ) == '.' ) { * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = * ( * endstr ) ++ ; ftype [ nf ] = DTK_NUMBER ; } else if ( isalpha ( ( unsigned char ) * ( * endstr ) ) ) { ftype [ nf ] = DTK_STRING ; * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; while ( isalpha ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; if ( * ( * endstr ) == '-' || * ( * endstr ) == '/' || * ( * endstr ) == '.' ) { char * dp = ( * endstr ) ; ftype [ nf ] = DTK_DATE ; * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) || * ( * endstr ) == * dp ) * lp ++ = * ( * endstr ) ++ ; } } else if ( isspace ( ( unsigned char ) * ( * endstr ) ) ) { ( * endstr ) ++ ; continue ; } else if ( * ( * endstr ) == '+' || * ( * endstr ) == '-' ) { * lp ++ = * ( * endstr ) ++ ; while ( isspace ( ( unsigned char ) * ( * endstr ) ) ) ( * endstr ) ++ ; if ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) { ftype [ nf ] = DTK_TZ ; * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) || ( * ( * endstr ) == ':' ) || ( * ( * endstr ) == '.' ) ) * lp ++ = * ( * endstr ) ++ ; } else if ( isalpha ( ( unsigned char ) * ( * endstr ) ) ) { ftype [ nf ] = DTK_SPECIAL ; * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; while ( isalpha ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; } else return - 1 ; } else if ( ispunct ( ( unsigned char ) * ( * endstr ) ) ) { ( * endstr ) ++ ; continue ; } else return - 1 ; * lp ++ = '\\\\0' ; nf ++ ; <S2SV_StartBug> if ( nf > MAXDATEFIELDS ) <S2SV_EndBug> return - 1 ; } * numfields = nf ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] = lp ; if ( nf >= MAXDATEFIELDS ) return - 1 <S2SV_ModStart> nf ++ ; <S2SV_ModEnd> } * numfields\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1690\n\n```\nCWE-200 static unsigned int help ( struct sk_buff * skb , enum ip_conntrack_info ctinfo , unsigned int protoff , unsigned int matchoff , unsigned int matchlen , struct nf_conntrack_expect * exp ) { char buffer [ sizeof ( \"4294967296<S2SV_blank>65635\" ) ] ; <S2SV_StartBug> u_int16_t port ; <S2SV_EndBug> <S2SV_StartBug> unsigned int ret ; <S2SV_EndBug> exp -> saved_proto . tcp . port = exp -> tuple . dst . u . tcp . port ; exp -> dir = IP_CT_DIR_REPLY ; exp -> expectfn = nf_nat_follow_master ; for ( port = ntohs ( exp -> saved_proto . tcp . port ) ; port != 0 ; port ++ ) { int ret ; exp -> tuple . dst . u . tcp . port = htons ( port ) ; ret = nf_ct_expect_related ( exp ) ; if ( ret == 0 ) break ; else if ( ret != - EBUSY ) { port = 0 ; break ; } } if ( port == 0 ) { <S2SV_StartBug> nf_ct_helper_log ( skb , exp -> master , \"all<S2SV_blank>ports<S2SV_blank>in<S2SV_blank>use\" ) ; <S2SV_EndBug> return NF_DROP ; } <S2SV_StartBug> ret = nf_nat_mangle_tcp_packet ( skb , exp -> master , ctinfo , <S2SV_EndBug> protoff , matchoff , matchlen , buffer , strlen ( buffer ) ) ; if ( ret != NF_ACCEPT ) { <S2SV_StartBug> nf_ct_helper_log ( skb , exp -> master , \"cannot<S2SV_blank>mangle<S2SV_blank>packet\" ) ; <S2SV_EndBug> nf_ct_unexpect_related ( exp ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ] ; struct nf_conn * ct = exp -> master ; union nf_inet_addr newaddr ; <S2SV_ModStart> unsigned int ret ; newaddr = ct -> tuplehash [ IP_CT_DIR_REPLY ] . tuple . dst . u3 <S2SV_ModStart> ( skb , ct <S2SV_ModEnd> , \"all<S2SV_blank>ports<S2SV_blank>in<S2SV_blank>use\" ) <S2SV_ModStart> NF_DROP ; } snprintf ( buffer , sizeof ( buffer ) , \"%u<S2SV_blank>%u\" , ntohl ( newaddr . ip ) , port ) ; pr_debug ( \"nf_nat_irc:<S2SV_blank>inserting<S2SV_blank>\\'%s\\'<S2SV_blank>==<S2SV_blank>%pI4,<S2SV_blank>port<S2SV_blank>%u\\\\n\" , buffer , & newaddr . ip , port ) ; <S2SV_ModStart> ( skb , ct <S2SV_ModEnd> , ctinfo , <S2SV_ModStart> ( skb , ct <S2SV_ModEnd> , \"cannot<S2SV_blank>mangle<S2SV_blank>packet\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-601(开放重定向)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3877\n\n```\nCWE-601 int am_check_url ( request_rec * r , const char * url ) { const char * i ; for ( i = url ; * i ; i ++ ) { if ( * i >= 0 && * i < '<S2SV_blank>' ) { AM_LOG_RERROR ( APLOG_MARK , APLOG_ERR , HTTP_BAD_REQUEST , r , \"Control<S2SV_blank>character<S2SV_blank>detected<S2SV_blank>in<S2SV_blank>URL.\" ) ; return HTTP_BAD_REQUEST ; } <S2SV_StartBug> } <S2SV_EndBug> return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> HTTP_BAD_REQUEST ; } if ( * i == '\\\\\\\\' ) { AM_LOG_RERROR ( APLOG_MARK , APLOG_ERR , HTTP_BAD_REQUEST , r , \"Backslash<S2SV_blank>character<S2SV_blank>detected<S2SV_blank>in<S2SV_blank>URL.\" ) ; return HTTP_BAD_REQUEST ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7026\n\n```\nCWE-362 long do_shmat ( int shmid , char __user * shmaddr , int shmflg , ulong * raddr , unsigned long shmlba ) { struct shmid_kernel * shp ; unsigned long addr ; unsigned long size ; struct file * file ; int err ; unsigned long flags ; unsigned long prot ; int acc_mode ; struct ipc_namespace * ns ; struct shm_file_data * sfd ; struct path path ; fmode_t f_mode ; unsigned long populate = 0 ; err = - EINVAL ; if ( shmid < 0 ) goto out ; else if ( ( addr = ( ulong ) shmaddr ) ) { if ( addr & ( shmlba - 1 ) ) { if ( shmflg & SHM_RND ) addr &= ~ ( shmlba - 1 ) ; else # ifndef __ARCH_FORCE_SHMLBA if ( addr & ~ PAGE_MASK ) # endif goto out ; } flags = MAP_SHARED | MAP_FIXED ; } else { if ( ( shmflg & SHM_REMAP ) ) goto out ; flags = MAP_SHARED ; } if ( shmflg & SHM_RDONLY ) { prot = PROT_READ ; acc_mode = S_IRUGO ; f_mode = FMODE_READ ; } else { prot = PROT_READ | PROT_WRITE ; acc_mode = S_IRUGO | S_IWUGO ; f_mode = FMODE_READ | FMODE_WRITE ; } if ( shmflg & SHM_EXEC ) { prot |= PROT_EXEC ; acc_mode |= S_IXUGO ; } ns = current -> nsproxy -> ipc_ns ; rcu_read_lock ( ) ; shp = shm_obtain_object_check ( ns , shmid ) ; if ( IS_ERR ( shp ) ) { err = PTR_ERR ( shp ) ; goto out_unlock ; } err = - EACCES ; if ( ipcperms ( ns , & shp -> shm_perm , acc_mode ) ) goto out_unlock ; err = security_shm_shmat ( shp , shmaddr , shmflg ) ; if ( err ) goto out_unlock ; <S2SV_StartBug> ipc_lock_object ( & shp -> shm_perm ) ; <S2SV_EndBug> path = shp -> shm_file -> f_path ; path_get ( & path ) ; shp -> shm_nattch ++ ; size = i_size_read ( path . dentry -> d_inode ) ; ipc_unlock_object ( & shp -> shm_perm ) ; rcu_read_unlock ( ) ; err = - ENOMEM ; sfd = kzalloc ( sizeof ( * sfd ) , GFP_KERNEL ) ; if ( ! sfd ) { path_put ( & path ) ; goto out_nattch ; } file = alloc_file ( & path , f_mode , is_file_hugepages ( shp -> shm_file ) ? & shm_file_operations_huge : & shm_file_operations ) ; err = PTR_ERR ( file ) ; if ( IS_ERR ( file ) ) { kfree ( sfd ) ; path_put ( & path ) ; goto out_nattch ; } file -> private_data = sfd ; file -> f_mapping = shp -> shm_file -> f_mapping ; sfd -> id = shp -> shm_perm . id ; sfd -> ns = get_ipc_ns ( ns ) ; sfd -> file = shp -> shm_file ; sfd -> vm_ops = NULL ; err = security_mmap_file ( file , prot , flags ) ; if ( err ) goto out_fput ; down_write ( & current -> mm -> mmap_sem ) ; if ( addr && ! ( shmflg & SHM_REMAP ) ) { err = - EINVAL ; if ( find_vma_intersection ( current -> mm , addr , addr + size ) ) goto invalid ; if ( addr < current -> mm -> start_stack && addr > current -> mm -> start_stack - size - PAGE_SIZE * 5 ) goto invalid ; } addr = do_mmap_pgoff ( file , addr , size , prot , flags , 0 , & populate ) ; * raddr = addr ; err = 0 ; if ( IS_ERR_VALUE ( addr ) ) err = ( long ) addr ; invalid : up_write ( & current -> mm -> mmap_sem ) ; if ( populate ) mm_populate ( addr , populate ) ; out_fput : fput ( file ) ; out_nattch : down_write ( & shm_ids ( ns ) . rwsem ) ; shp = shm_lock ( ns , shmid ) ; BUG_ON ( IS_ERR ( shp ) ) ; shp -> shm_nattch -- ; if ( shm_may_destroy ( ns , shp ) ) shm_destroy ( ns , shp ) ; else shm_unlock ( shp ) ; up_write ( & shm_ids ( ns ) . rwsem ) ; return err ; out_unlock : rcu_read_unlock ( ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> shm_perm ) ; if ( shp -> shm_file == NULL ) { ipc_unlock_object ( & shp -> shm_perm ) ; err = - EIDRM ; goto out_unlock ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static void perf_event_interrupt ( struct pt_regs * regs ) { int i ; struct cpu_hw_events * cpuhw = & __get_cpu_var ( cpu_hw_events ) ; struct perf_event * event ; unsigned long val ; int found = 0 ; int nmi ; nmi = perf_intr_is_nmi ( regs ) ; if ( nmi ) nmi_enter ( ) ; else irq_enter ( ) ; for ( i = 0 ; i < ppmu -> n_counter ; ++ i ) { event = cpuhw -> event [ i ] ; val = read_pmc ( i ) ; if ( ( int ) val < 0 ) { if ( event ) { found = 1 ; <S2SV_StartBug> record_and_restart ( event , val , regs , nmi ) ; <S2SV_EndBug> } else { write_pmc ( i , 0 ) ; } } } mtmsr ( mfmsr ( ) | MSR_PMM ) ; mtpmr ( PMRN_PMGC0 , PMGC0_PMIE | PMGC0_FCECE ) ; isync ( ) ; if ( nmi ) nmi_exit ( ) ; else irq_exit ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val , regs <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imageaffinematrixget ) { double affine [ 6 ] ; long type ; zval * options ; zval * * tmp ; int res = GD_FALSE , i ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"l|z\" , & type , & options ) == FAILURE ) { return ; } switch ( ( gdAffineStandardMatrix ) type ) { case GD_AFFINE_TRANSLATE : case GD_AFFINE_SCALE : { double x , y ; if ( Z_TYPE_P ( options ) != IS_ARRAY ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Array<S2SV_blank>expected<S2SV_blank>as<S2SV_blank>options\" ) ; } if ( zend_hash_find ( HASH_OF ( options ) , \"x\" , sizeof ( \"x\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> convert_to_double_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> x = Z_DVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>x<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( options ) , \"y\" , sizeof ( \"y\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> convert_to_double_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> y = Z_DVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>y<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( type == GD_AFFINE_TRANSLATE ) { res = gdAffineTranslate ( affine , x , y ) ; } else { res = gdAffineScale ( affine , x , y ) ; } break ; } case GD_AFFINE_ROTATE : case GD_AFFINE_SHEAR_HORIZONTAL : case GD_AFFINE_SHEAR_VERTICAL : { double angle ; convert_to_double_ex ( & options ) ; angle = Z_DVAL_P ( options ) ; if ( type == GD_AFFINE_SHEAR_HORIZONTAL ) { res = gdAffineShearHorizontal ( affine , angle ) ; } else if ( type == GD_AFFINE_SHEAR_VERTICAL ) { res = gdAffineShearVertical ( affine , angle ) ; } else { res = gdAffineRotate ( affine , angle ) ; } break ; } default : php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Invalid<S2SV_blank>type<S2SV_blank>for<S2SV_blank>element<S2SV_blank>%li\" , type ) ; RETURN_FALSE ; } if ( res == GD_FALSE ) { RETURN_FALSE ; } else { array_init ( return_value ) ; for ( i = 0 ; i < 6 ; i ++ ) { add_index_double ( return_value , i , affine [ i ] ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_DOUBLE ) { zval dval ; dval = * * tmp ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; x <S2SV_ModStart> ; x = Z_DVAL ( dval ) ; } else { x = <S2SV_ModStart> tmp ) ; } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_DOUBLE ) { zval dval ; dval = * * tmp ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; y <S2SV_ModStart> ; y = Z_DVAL ( dval ) ; } else { y = <S2SV_ModStart> tmp ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadGRAYImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * canvas_image , * image ; MagickBooleanType status ; MagickOffsetType scene ; QuantumInfo * quantum_info ; QuantumType quantum_type ; size_t length ; ssize_t count , y ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( OptionError , \"MustSpecifyImageSize\" ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( DiscardBlobBytes ( image , ( size_t ) image -> offset ) == MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; SetImageColorspace ( image , GRAYColorspace ) ; canvas_image = CloneImage ( image , image -> extract_info . width , 1 , MagickFalse , exception ) ; ( void ) SetImageVirtualPixelMethod ( canvas_image , BlackVirtualPixelMethod ) ; quantum_type = GrayQuantum ; quantum_info = AcquireQuantumInfo ( image_info , canvas_image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = GetQuantumPixels ( quantum_info ) ; if ( image_info -> number_scenes != 0 ) while ( image -> scene < image_info -> scene ) { image -> scene ++ ; length = GetQuantumExtent ( canvas_image , quantum_info , quantum_type ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) break ; } } scene = 0 ; count = 0 ; length = 0 ; do { if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; <S2SV_StartBug> SetImageColorspace ( image , GRAYColorspace ) ; <S2SV_EndBug> if ( scene == 0 ) { length = GetQuantumExtent ( canvas_image , quantum_info , quantum_type ) ; count = ReadBlob ( image , length , pixels ) ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { register const PixelPacket * restrict p ; register ssize_t x ; register PixelPacket * restrict q ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , image -> columns , 1 , exception ) ; q = QueueAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const PixelPacket * ) NULL ) || ( q == ( PixelPacket * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( q , GetPixelRed ( p ) ) ; SetPixelGreen ( q , GetPixelGreen ( p ) ) ; SetPixelBlue ( q , GetPixelBlue ( p ) ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } count = ReadBlob ( image , length , pixels ) ; } SetQuantumImageType ( image , quantum_type ) ; if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( count == ( ssize_t ) length ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } scene ++ ; } while ( count == ( ssize_t ) length ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; InheritException ( & image -> exception , & canvas_image -> exception ) ; canvas_image = DestroyImage ( canvas_image ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4621\n\n```\nCWE-000 static void check_preempt_curr ( struct rq * rq , struct task_struct * p , int flags ) { const struct sched_class * class ; if ( p -> sched_class == rq -> curr -> sched_class ) { rq -> curr -> sched_class -> check_preempt_curr ( rq , p , flags ) ; } else { for_each_class ( class ) { if ( class == rq -> curr -> sched_class ) break ; if ( class == p -> sched_class ) { resched_task ( rq -> curr ) ; break ; } } } <S2SV_StartBug> if ( test_tsk_need_resched ( rq -> curr ) ) <S2SV_EndBug> rq -> skip_clock_update = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( rq -> curr -> se . on_rq &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-27138\n\n```\nCWE-000 int fit_image_verify ( const void * fit , int image_noffset ) { <S2SV_StartBug> const void * data ; <S2SV_EndBug> size_t size ; <S2SV_StartBug> int noffset = 0 ; <S2SV_EndBug> <S2SV_StartBug> char * err_msg = \"\" ; <S2SV_EndBug> if ( fit_image_get_data_and_size ( fit , image_noffset , & data , & size ) ) { err_msg = \"Can\\'t<S2SV_blank>get<S2SV_blank>image<S2SV_blank>data/size\" ; <S2SV_StartBug> printf ( \"error!\\\\n%s<S2SV_blank>for<S2SV_blank>\\'%s\\'<S2SV_blank>hash<S2SV_blank>node<S2SV_blank>in<S2SV_blank>\\'%s\\'<S2SV_blank>image<S2SV_blank>node\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> err_msg , fit_get_name ( fit , noffset , NULL ) , <S2SV_EndBug> fit_get_name ( fit , image_noffset , NULL ) ) ; return 0 ; } <S2SV_StartBug> return fit_image_verify_with_data ( fit , image_noffset , data , size ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { const char * name = fit_get_name ( fit , image_noffset , NULL ) ; const <S2SV_ModStart> size_t size ; <S2SV_ModEnd> char * err_msg <S2SV_ModStart> = \"\" ; if ( strchr ( name , '@' ) ) { err_msg = \"Node<S2SV_blank>name<S2SV_blank>contains<S2SV_blank>@\" ; goto err ; } <S2SV_ModStart> = \"Can\\'t<S2SV_blank>get<S2SV_blank>image<S2SV_blank>data/size\" ; goto err ; } return fit_image_verify_with_data <S2SV_ModEnd> ( fit , <S2SV_ModStart> ( fit , image_noffset , data , size ) ; err : printf ( \"error!\\\\n%s<S2SV_blank>in<S2SV_blank>\\'%s\\'<S2SV_blank>image<S2SV_blank>node\\\\n\" , err_msg <S2SV_ModEnd> , fit_get_name ( <S2SV_ModStart> 0 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7500\n\n```\nCWE-59 int rpmPackageFilesInstall ( rpmts ts , rpmte te , rpmfiles files , rpmpsm psm , char * * failedFile ) { FD_t payload = rpmtePayload ( te ) ; rpmfi fi = rpmfiNewArchiveReader ( payload , files , RPMFI_ITER_READ_ARCHIVE ) ; rpmfs fs = rpmteGetFileStates ( te ) ; rpmPlugins plugins = rpmtsPlugins ( ts ) ; struct stat sb ; int saveerrno = errno ; int rc = 0 ; int nodigest = ( rpmtsFlags ( ts ) & RPMTRANS_FLAG_NOFILEDIGEST ) ? 1 : 0 ; int nofcaps = ( rpmtsFlags ( ts ) & RPMTRANS_FLAG_NOCAPS ) ? 1 : 0 ; int firsthardlink = - 1 ; int skip ; rpmFileAction action ; char * tid = NULL ; const char * suffix ; char * fpath = NULL ; if ( fi == NULL ) { rc = RPMERR_BAD_MAGIC ; goto exit ; } rasprintf ( & tid , \";%08x\" , ( unsigned ) rpmtsGetTid ( ts ) ) ; rc = fsmMkdirs ( files , fs , plugins ) ; while ( ! rc ) { rc = rpmfiNext ( fi ) ; if ( rc < 0 ) { if ( rc == RPMERR_ITER_END ) rc = 0 ; break ; } action = rpmfsGetAction ( fs , rpmfiFX ( fi ) ) ; skip = XFA_SKIPPING ( action ) ; suffix = S_ISDIR ( rpmfiFMode ( fi ) ) ? NULL : tid ; if ( action != FA_TOUCH ) { fpath = fsmFsPath ( fi , suffix ) ; } else { fpath = fsmFsPath ( fi , \"\" ) ; } rc = rpmfiStat ( fi , 1 , & sb ) ; fsmDebug ( fpath , action , & sb ) ; if ( rc ) break ; rc = rpmpluginsCallFsmFilePre ( plugins , fi , fpath , sb . st_mode , action ) ; if ( rc ) { skip = 1 ; } else { setFileState ( fs , rpmfiFX ( fi ) ) ; } if ( ! skip ) { int setmeta = 1 ; if ( ! suffix ) { rc = fsmBackup ( fi , action ) ; } if ( ! suffix ) { <S2SV_StartBug> rc = fsmVerify ( fpath , fi ) ; <S2SV_EndBug> } else { rc = ( action == FA_TOUCH ) ? 0 : RPMERR_ENOENT ; } if ( S_ISREG ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMkfile ( fi , fpath , files , psm , nodigest , & setmeta , & firsthardlink ) ; } } else if ( S_ISDIR ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { mode_t mode = sb . st_mode ; mode &= ~ 07777 ; mode |= 00700 ; rc = fsmMkdir ( fpath , mode ) ; } } else if ( S_ISLNK ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmSymlink ( rpmfiFLink ( fi ) , fpath ) ; } } else if ( S_ISFIFO ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMkfifo ( fpath , 0000 ) ; } } else if ( S_ISCHR ( sb . st_mode ) || S_ISBLK ( sb . st_mode ) || S_ISSOCK ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMknod ( fpath , sb . st_mode , sb . st_rdev ) ; } } else { if ( ! IS_DEV_LOG ( fpath ) ) rc = RPMERR_UNKNOWN_FILETYPE ; } if ( ! rc && setmeta ) { rc = fsmSetmeta ( fpath , fi , plugins , action , & sb , nofcaps ) ; } } else if ( firsthardlink >= 0 && rpmfiArchiveHasContent ( fi ) ) { char * fn = rpmfilesFN ( files , firsthardlink ) ; rc = expandRegular ( fi , fn , psm , 0 , nodigest , 0 ) ; firsthardlink = - 1 ; free ( fn ) ; } if ( rc ) { if ( ! skip ) { if ( suffix && ( action != FA_TOUCH ) ) { ( void ) fsmRemove ( fpath , sb . st_mode ) ; } errno = saveerrno ; } } else { rpmpsmNotify ( psm , RPMCALLBACK_INST_PROGRESS , rpmfiArchiveTell ( fi ) ) ; if ( ! skip ) { if ( suffix ) rc = fsmBackup ( fi , action ) ; if ( ! rc ) rc = fsmCommit ( & fpath , fi , action , suffix ) ; } } if ( rc ) * failedFile = xstrdup ( fpath ) ; rpmpluginsCallFsmFilePost ( plugins , fi , fpath , sb . st_mode , action , rc ) ; fpath = _free ( fpath ) ; } rpmswAdd ( rpmtsOp ( ts , RPMTS_OP_UNCOMPRESS ) , fdOp ( payload , FDSTAT_READ ) ) ; rpmswAdd ( rpmtsOp ( ts , RPMTS_OP_DIGEST ) , fdOp ( payload , FDSTAT_DIGEST ) ) ; exit : rpmfiArchiveClose ( fi ) ; rpmfiFree ( fi ) ; Fclose ( payload ) ; free ( tid ) ; free ( fpath ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fpath , fi , & sb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-129(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-33815\n\n```\nCWE-129 static int dwa_uncompress ( EXRContext * s , const uint8_t * src , int compressed_size , int uncompressed_size , EXRThreadData * td ) { int64_t version , lo_usize , lo_size ; int64_t ac_size , dc_size , rle_usize , rle_csize , rle_raw_size ; int64_t ac_count , dc_count , ac_compression ; const int dc_w = td -> xsize >> 3 ; const int dc_h = td -> ysize >> 3 ; GetByteContext gb , agb ; int skip , ret ; if ( compressed_size <= 88 ) return AVERROR_INVALIDDATA ; version = AV_RL64 ( src + 0 ) ; if ( version != 2 ) return AVERROR_INVALIDDATA ; lo_usize = AV_RL64 ( src + 8 ) ; lo_size = AV_RL64 ( src + 16 ) ; ac_size = AV_RL64 ( src + 24 ) ; dc_size = AV_RL64 ( src + 32 ) ; rle_csize = AV_RL64 ( src + 40 ) ; rle_usize = AV_RL64 ( src + 48 ) ; rle_raw_size = AV_RL64 ( src + 56 ) ; ac_count = AV_RL64 ( src + 64 ) ; dc_count = AV_RL64 ( src + 72 ) ; ac_compression = AV_RL64 ( src + 80 ) ; if ( compressed_size < 88LL + lo_size + ac_size + dc_size + rle_csize ) return AVERROR_INVALIDDATA ; bytestream2_init ( & gb , src + 88 , compressed_size - 88 ) ; skip = bytestream2_get_le16 ( & gb ) ; if ( skip < 2 ) return AVERROR_INVALIDDATA ; bytestream2_skip ( & gb , skip - 2 ) ; if ( lo_size > 0 ) { if ( lo_usize > uncompressed_size ) return AVERROR_INVALIDDATA ; bytestream2_skip ( & gb , lo_size ) ; } if ( ac_size > 0 ) { unsigned long dest_len = ac_count * 2LL ; GetByteContext agb = gb ; if ( ac_count > 3LL * td -> xsize * s -> scan_lines_per_block ) return AVERROR_INVALIDDATA ; av_fast_padded_malloc ( & td -> ac_data , & td -> ac_size , dest_len ) ; if ( ! td -> ac_data ) return AVERROR ( ENOMEM ) ; switch ( ac_compression ) { case 0 : ret = huf_uncompress ( s , td , & agb , ( int16_t * ) td -> ac_data , ac_count ) ; if ( ret < 0 ) return ret ; break ; case 1 : if ( uncompress ( td -> ac_data , & dest_len , agb . buffer , ac_size ) != Z_OK || dest_len != ac_count * 2LL ) return AVERROR_INVALIDDATA ; break ; default : return AVERROR_INVALIDDATA ; } bytestream2_skip ( & gb , ac_size ) ; } <S2SV_StartBug> if ( dc_size > 0 ) { <S2SV_EndBug> unsigned long dest_len = dc_count * 2LL ; GetByteContext agb = gb ; <S2SV_StartBug> if ( dc_count > ( 6LL * td -> xsize * td -> ysize + 63 ) / 64 ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; av_fast_padded_malloc ( & td -> dc_data , & td -> dc_size , FFALIGN ( dest_len , 64 ) * 2 ) ; if ( ! td -> dc_data ) return AVERROR ( ENOMEM ) ; if ( uncompress ( td -> dc_data + FFALIGN ( dest_len , 64 ) , & dest_len , agb . buffer , dc_size ) != Z_OK || ( dest_len != dc_count * 2LL ) ) return AVERROR_INVALIDDATA ; s -> dsp . predictor ( td -> dc_data + FFALIGN ( dest_len , 64 ) , dest_len ) ; s -> dsp . reorder_pixels ( td -> dc_data , td -> dc_data + FFALIGN ( dest_len , 64 ) , dest_len ) ; bytestream2_skip ( & gb , dc_size ) ; } if ( rle_raw_size > 0 && rle_csize > 0 && rle_usize > 0 ) { unsigned long dest_len = rle_usize ; av_fast_padded_malloc ( & td -> rle_data , & td -> rle_size , rle_usize ) ; if ( ! td -> rle_data ) return AVERROR ( ENOMEM ) ; av_fast_padded_malloc ( & td -> rle_raw_data , & td -> rle_raw_size , rle_raw_size ) ; if ( ! td -> rle_raw_data ) return AVERROR ( ENOMEM ) ; if ( uncompress ( td -> rle_data , & dest_len , gb . buffer , rle_csize ) != Z_OK || ( dest_len != rle_usize ) ) return AVERROR_INVALIDDATA ; ret = rle ( td -> rle_raw_data , td -> rle_data , rle_usize , rle_raw_size ) ; if ( ret < 0 ) return ret ; bytestream2_skip ( & gb , rle_csize ) ; } bytestream2_init ( & agb , td -> ac_data , ac_count * 2 ) ; for ( int y = 0 ; y < td -> ysize ; y += 8 ) { for ( int x = 0 ; x < td -> xsize ; x += 8 ) { memset ( td -> block , 0 , sizeof ( td -> block ) ) ; for ( int j = 0 ; j < 3 ; j ++ ) { float * block = td -> block [ j ] ; const int idx = ( x >> 3 ) + ( y >> 3 ) * dc_w + dc_w * dc_h * j ; uint16_t * dc = ( uint16_t * ) td -> dc_data ; union av_intfloat32 dc_val ; dc_val . i = half2float ( dc [ idx ] , s -> mantissatable , s -> exponenttable , s -> offsettable ) ; block [ 0 ] = dc_val . f ; ac_uncompress ( s , & agb , block ) ; dct_inverse ( block ) ; } { const float scale = s -> pixel_type == EXR_FLOAT ? 2.f : 1.f ; const int o = s -> nb_channels == 4 ; float * bo = ( ( float * ) td -> uncompressed_data ) + y * td -> xsize * s -> nb_channels + td -> xsize * ( o + 0 ) + x ; float * go = ( ( float * ) td -> uncompressed_data ) + y * td -> xsize * s -> nb_channels + td -> xsize * ( o + 1 ) + x ; float * ro = ( ( float * ) td -> uncompressed_data ) + y * td -> xsize * s -> nb_channels + td -> xsize * ( o + 2 ) + x ; float * yb = td -> block [ 0 ] ; float * ub = td -> block [ 1 ] ; float * vb = td -> block [ 2 ] ; for ( int yy = 0 ; yy < 8 ; yy ++ ) { for ( int xx = 0 ; xx < 8 ; xx ++ ) { const int idx = xx + yy * 8 ; convert ( yb [ idx ] , ub [ idx ] , vb [ idx ] , & bo [ xx ] , & go [ xx ] , & ro [ xx ] ) ; bo [ xx ] = to_linear ( bo [ xx ] , scale ) ; go [ xx ] = to_linear ( go [ xx ] , scale ) ; ro [ xx ] = to_linear ( ro [ xx ] , scale ) ; } bo += td -> xsize * s -> nb_channels ; go += td -> xsize * s -> nb_channels ; ro += td -> xsize * s -> nb_channels ; } } } } if ( s -> nb_channels < 4 ) return 0 ; for ( int y = 0 ; y < td -> ysize && td -> rle_raw_data ; y ++ ) { uint32_t * ao = ( ( uint32_t * ) td -> uncompressed_data ) + y * td -> xsize * s -> nb_channels ; uint8_t * ai0 = td -> rle_raw_data + y * td -> xsize ; uint8_t * ai1 = td -> rle_raw_data + y * td -> xsize + rle_raw_size / 2 ; for ( int x = 0 ; x < td -> xsize ; x ++ ) { uint16_t ha = ai0 [ x ] | ( ai1 [ x ] << 8 ) ; ao [ x ] = half2float ( ha , s -> mantissatable , s -> exponenttable , s -> offsettable ) ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } <S2SV_ModEnd> { unsigned long <S2SV_ModStart> if ( dc_count != dc_w * dc_h * 3 <S2SV_ModEnd> ) return AVERROR_INVALIDDATA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 static void test_show_object ( struct object * object , <S2SV_StartBug> struct strbuf * path , <S2SV_EndBug> <S2SV_StartBug> const char * last , void * data ) <S2SV_EndBug> { struct bitmap_test_data * tdata = data ; int bitmap_pos ; bitmap_pos = bitmap_position ( object -> oid . hash ) ; if ( bitmap_pos < 0 ) die ( \"Object<S2SV_blank>not<S2SV_blank>in<S2SV_blank>bitmap:<S2SV_blank>%s\\\\n\" , oid_to_hex ( & object -> oid ) ) ; bitmap_set ( tdata -> base , bitmap_pos ) ; display_progress ( tdata -> prg , ++ tdata -> seen ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * object , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 static int jpc_pi_nextrpcl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; int compno ; jpc_picomp_t * picomp ; int xstep ; int ystep ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; uint_fast32_t trx0 ; uint_fast32_t try0 ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> xstep = 0 ; pi -> ystep = 0 ; for ( compno = 0 , picomp = pi -> picomps ; compno < pi -> numcomps ; ++ compno , ++ picomp ) { for ( rlvlno = 0 , pirlvl = picomp -> pirlvls ; rlvlno < picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { <S2SV_StartBug> if ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls > <S2SV_EndBug> JAS_UINTFAST32_NUMBITS - 2 || <S2SV_StartBug> pirlvl -> prcheightexpn + pi -> picomp -> numrlvls > <S2SV_EndBug> JAS_UINTFAST32_NUMBITS - 2 ) { return - 1 ; } xstep = picomp -> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcwidthexpn + picomp -> numrlvls - rlvlno - 1 ) ) ; ystep = picomp -> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcheightexpn + picomp -> numrlvls - rlvlno - 1 ) ) ; pi -> xstep = ( ! pi -> xstep ) ? xstep : JAS_MIN ( pi -> xstep , xstep ) ; pi -> ystep = ( ! pi -> ystep ) ? ystep : JAS_MIN ( pi -> ystep , ystep ) ; } } pi -> prgvolfirst = 0 ; } for ( pi -> rlvlno = pchg -> rlvlnostart ; pi -> rlvlno < pchg -> rlvlnoend && pi -> rlvlno < pi -> maxrlvls ; ++ pi -> rlvlno ) { for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < JAS_CAST ( int , pchg -> compnoend ) && pi -> compno < pi -> numcomps ; ++ pi -> compno , ++ pi -> picomp ) { if ( pi -> rlvlno >= pi -> picomp -> numrlvls ) { continue ; } pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( JAS_CAST ( uint_fast32_t , 1 ) << rpx ) ) ) || ! ( pi -> x % ( JAS_CAST ( uint_fast32_t , 1 ) << rpx ) ) ) && ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( JAS_CAST ( uint_fast32_t , 1 ) << rpy ) ) ) || ! ( pi -> y % ( JAS_CAST ( uint_fast32_t , 1 ) << rpy ) ) ) ) { prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> prcwidthexpn + <S2SV_ModEnd> picomp -> numrlvls <S2SV_ModStart> -> prcheightexpn + <S2SV_ModEnd> picomp -> numrlvls\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18585\n\n```\nCWE-476 static int chmd_read_headers ( struct mspack_system * sys , struct mspack_file * fh , struct mschmd_header * chm , int entire ) { unsigned int section , name_len , x , errors , num_chunks ; unsigned char buf [ 0x54 ] , * chunk = NULL , * name , * p , * end ; struct mschmd_file * fi , * link = NULL ; off_t offset , length ; int num_entries ; chm -> files = NULL ; chm -> sysfiles = NULL ; chm -> chunk_cache = NULL ; chm -> sec0 . base . chm = chm ; chm -> sec0 . base . id = 0 ; chm -> sec1 . base . chm = chm ; chm -> sec1 . base . id = 1 ; chm -> sec1 . content = NULL ; chm -> sec1 . control = NULL ; chm -> sec1 . spaninfo = NULL ; chm -> sec1 . rtable = NULL ; if ( sys -> read ( fh , & buf [ 0 ] , chmhead_SIZEOF ) != chmhead_SIZEOF ) { return MSPACK_ERR_READ ; } if ( EndGetI32 ( & buf [ chmhead_Signature ] ) != 0x46535449 ) { return MSPACK_ERR_SIGNATURE ; } if ( mspack_memcmp ( & buf [ chmhead_GUID1 ] , & guids [ 0 ] , 32L ) != 0 ) { D ( ( \"incorrect<S2SV_blank>GUIDs\" ) ) return MSPACK_ERR_SIGNATURE ; } chm -> version = EndGetI32 ( & buf [ chmhead_Version ] ) ; chm -> timestamp = EndGetM32 ( & buf [ chmhead_Timestamp ] ) ; chm -> language = EndGetI32 ( & buf [ chmhead_LanguageID ] ) ; if ( chm -> version > 3 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>CHM<S2SV_blank>version<S2SV_blank>><S2SV_blank>3\" ) ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhst3_SIZEOF ) != chmhst3_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & offset , & buf [ chmhst_OffsetHS0 ] , sys , fh ) || read_off64 ( & chm -> dir_offset , & buf [ chmhst_OffsetHS1 ] , sys , fh ) || read_off64 ( & chm -> sec0 . offset , & buf [ chmhst3_OffsetCS0 ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs0_SIZEOF ) != chmhs0_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & chm -> length , & buf [ chmhs0_FileLen ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , chm -> dir_offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs1_SIZEOF ) != chmhs1_SIZEOF ) { return MSPACK_ERR_READ ; } chm -> dir_offset = sys -> tell ( fh ) ; chm -> chunk_size = EndGetI32 ( & buf [ chmhs1_ChunkSize ] ) ; chm -> density = EndGetI32 ( & buf [ chmhs1_Density ] ) ; chm -> depth = EndGetI32 ( & buf [ chmhs1_Depth ] ) ; chm -> index_root = EndGetI32 ( & buf [ chmhs1_IndexRoot ] ) ; chm -> num_chunks = EndGetI32 ( & buf [ chmhs1_NumChunks ] ) ; chm -> first_pmgl = EndGetI32 ( & buf [ chmhs1_FirstPMGL ] ) ; chm -> last_pmgl = EndGetI32 ( & buf [ chmhs1_LastPMGL ] ) ; if ( chm -> version < 3 ) { chm -> sec0 . offset = chm -> dir_offset + ( chm -> chunk_size * chm -> num_chunks ) ; } if ( chm -> sec0 . offset > chm -> length ) { D ( ( \"content<S2SV_blank>section<S2SV_blank>begins<S2SV_blank>after<S2SV_blank>file<S2SV_blank>has<S2SV_blank>ended\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> chunk_size < ( pmgl_Entries + 2 ) ) { D ( ( \"chunk<S2SV_blank>size<S2SV_blank>not<S2SV_blank>large<S2SV_blank>enough\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks == 0 ) { D ( ( \"no<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks > 100000 ) { D ( ( \"more<S2SV_blank>than<S2SV_blank>100,000<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( off_t ) chm -> chunk_size * ( off_t ) chm -> num_chunks > chm -> length ) { D ( ( \"chunks<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>entire<S2SV_blank>file\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( chm -> chunk_size & ( chm -> chunk_size - 1 ) ) != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>two\" ) ; } if ( chm -> first_pmgl != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>first<S2SV_blank>PMGL<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>not<S2SV_blank>zero\" ) ; } if ( chm -> first_pmgl > chm -> last_pmgl ) { D ( ( \"first<S2SV_blank>pmgl<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>after<S2SV_blank>last<S2SV_blank>pmgl<S2SV_blank>chunk\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> index_root != 0xFFFFFFFF && chm -> index_root >= chm -> num_chunks ) { D ( ( \"index_root<S2SV_blank>outside<S2SV_blank>valid<S2SV_blank>range\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ! entire ) { return MSPACK_ERR_OK ; } if ( ( x = chm -> first_pmgl ) != 0 ) { if ( sys -> seek ( fh , ( off_t ) ( x * chm -> chunk_size ) , MSPACK_SYS_SEEK_CUR ) ) { return MSPACK_ERR_SEEK ; } } num_chunks = chm -> last_pmgl - x + 1 ; if ( ! ( chunk = ( unsigned char * ) sys -> alloc ( sys , ( size_t ) chm -> chunk_size ) ) ) { return MSPACK_ERR_NOMEMORY ; } errors = 0 ; while ( num_chunks -- ) { if ( sys -> read ( fh , chunk , ( int ) chm -> chunk_size ) != ( int ) chm -> chunk_size ) { sys -> free ( chunk ) ; return MSPACK_ERR_READ ; } if ( EndGetI32 ( & chunk [ pmgl_Signature ] ) != 0x4C474D50 ) continue ; if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) < 2 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\" ) ; } if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) > ( ( int ) chm -> chunk_size - pmgl_Entries ) ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ; } p = & chunk [ pmgl_Entries ] ; end = & chunk [ chm -> chunk_size - 2 ] ; num_entries = EndGetI16 ( end ) ; while ( num_entries -- ) { READ_ENCINT ( name_len ) ; if ( name_len > ( unsigned int ) ( end - p ) ) goto chunk_end ; <S2SV_StartBug> if ( name_len == 0 ) goto chunk_end ; <S2SV_EndBug> name = p ; p += name_len ; READ_ENCINT ( section ) ; READ_ENCINT ( offset ) ; <S2SV_StartBug> READ_ENCINT ( length ) ; <S2SV_EndBug> if ( ( offset == 0 ) && ( length == 0 ) ) { if ( ( name_len > 0 ) && ( name [ name_len - 1 ] == '/' ) ) continue ; } if ( section > 1 ) { sys -> message ( fh , \"invalid<S2SV_blank>section<S2SV_blank>number<S2SV_blank>\\'%u\\'.\" , section ) ; continue ; } if ( ! ( fi = ( struct mschmd_file * ) sys -> alloc ( sys , sizeof ( struct mschmd_file ) + name_len + 1 ) ) ) { sys -> free ( chunk ) ; return MSPACK_ERR_NOMEMORY ; } fi -> next = NULL ; fi -> filename = ( char * ) & fi [ 1 ] ; fi -> section = ( ( section == 0 ) ? ( struct mschmd_section * ) ( & chm -> sec0 ) : ( struct mschmd_section * ) ( & chm -> sec1 ) ) ; fi -> offset = offset ; fi -> length = length ; sys -> copy ( name , fi -> filename , ( size_t ) name_len ) ; fi -> filename [ name_len ] = '\\\\0' ; if ( name [ 0 ] == ':' && name [ 1 ] == ':' ) { if ( mspack_memcmp ( & name [ 2 ] , & content_name [ 2 ] , 31L ) == 0 ) { if ( mspack_memcmp ( & name [ 33 ] , & content_name [ 33 ] , 8L ) == 0 ) { chm -> sec1 . content = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & control_name [ 33 ] , 11L ) == 0 ) { chm -> sec1 . control = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & spaninfo_name [ 33 ] , 8L ) == 0 ) { chm -> sec1 . spaninfo = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & rtable_name [ 33 ] , 72L ) == 0 ) { chm -> sec1 . rtable = fi ; } } fi -> next = chm -> sysfiles ; chm -> sysfiles = fi ; } else { if ( link ) link -> next = fi ; else chm -> files = fi ; link = fi ; } } chunk_end : if ( num_entries >= 0 ) { D ( ( \"chunk<S2SV_blank>ended<S2SV_blank>before<S2SV_blank>all<S2SV_blank>entries<S2SV_blank>could<S2SV_blank>be<S2SV_blank>read\" ) ) errors ++ ; } } sys -> free ( chunk ) ; return ( errors > 0 ) ? MSPACK_ERR_DATAFORMAT : MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto chunk_end ; <S2SV_ModEnd> name = p <S2SV_ModStart> ( length ) ; if ( name_len < 2 || ! name [ 0 ] || ! name [ 1 ] ) continue\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5045\n\n```\nCWE-59 static int mountpoint_last ( struct nameidata * nd , struct path * path ) { int error = 0 ; struct dentry * dentry ; struct dentry * dir = nd -> path . dentry ; if ( nd -> flags & LOOKUP_RCU ) { if ( unlazy_walk ( nd , NULL ) ) { error = - ECHILD ; goto out ; } } nd -> flags &= ~ LOOKUP_PARENT ; if ( unlikely ( nd -> last_type != LAST_NORM ) ) { error = handle_dots ( nd , nd -> last_type ) ; if ( error ) goto out ; dentry = dget ( nd -> path . dentry ) ; goto done ; } mutex_lock ( & dir -> d_inode -> i_mutex ) ; dentry = d_lookup ( dir , & nd -> last ) ; if ( ! dentry ) { dentry = d_alloc ( dir , & nd -> last ) ; if ( ! dentry ) { error = - ENOMEM ; mutex_unlock ( & dir -> d_inode -> i_mutex ) ; goto out ; } dentry = lookup_real ( dir -> d_inode , dentry , nd -> flags ) ; error = PTR_ERR ( dentry ) ; if ( IS_ERR ( dentry ) ) { mutex_unlock ( & dir -> d_inode -> i_mutex ) ; goto out ; } } mutex_unlock ( & dir -> d_inode -> i_mutex ) ; done : if ( ! dentry -> d_inode || d_is_negative ( dentry ) ) { error = - ENOENT ; dput ( dentry ) ; goto out ; } path -> dentry = dentry ; <S2SV_StartBug> path -> mnt = mntget ( nd -> path . mnt ) ; <S2SV_EndBug> if ( should_follow_link ( dentry , nd -> flags & LOOKUP_FOLLOW ) ) return 1 ; <S2SV_StartBug> follow_mount ( path ) ; <S2SV_EndBug> error = 0 ; out : terminate_walk ( nd ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mnt = <S2SV_ModEnd> nd -> path <S2SV_ModStart> path . mnt <S2SV_ModEnd> ; if ( <S2SV_ModStart> return 1 ; mntget ( path -> mnt ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19841\n\n```\nCWE-125 int WavpackVerifySingleBlock ( unsigned char * buffer , int verify_checksum ) { WavpackHeader * wphdr = ( WavpackHeader * ) buffer ; uint32_t checksum_passed = 0 , bcount , meta_bc ; unsigned char * dp , meta_id , c1 , c2 ; if ( strncmp ( wphdr -> ckID , \"wvpk\" , 4 ) || wphdr -> ckSize + 8 < sizeof ( WavpackHeader ) ) return FALSE ; bcount = wphdr -> ckSize - sizeof ( WavpackHeader ) + 8 ; dp = ( unsigned char * ) ( wphdr + 1 ) ; while ( bcount >= 2 ) { meta_id = * dp ++ ; c1 = * dp ++ ; meta_bc = c1 << 1 ; bcount -= 2 ; if ( meta_id & ID_LARGE ) { if ( bcount < 2 ) return FALSE ; c1 = * dp ++ ; c2 = * dp ++ ; meta_bc += ( ( uint32_t ) c1 << 9 ) + ( ( uint32_t ) c2 << 17 ) ; bcount -= 2 ; } if ( bcount < meta_bc ) return FALSE ; if ( verify_checksum && ( meta_id & ID_UNIQUE ) == ID_BLOCK_CHECKSUM ) { # ifdef BITSTREAM_SHORTS uint16_t * csptr = ( uint16_t * ) buffer ; # else unsigned char * csptr = buffer ; # endif int wcount = ( int ) ( dp - 2 - buffer ) >> 1 ; uint32_t csum = ( uint32_t ) - 1 ; if ( ( meta_id & ID_ODD_SIZE ) || meta_bc < 2 || meta_bc > 4 ) return FALSE ; # ifdef BITSTREAM_SHORTS while ( wcount -- ) csum = ( csum * 3 ) + * csptr ++ ; # else WavpackNativeToLittleEndian ( ( WavpackHeader * ) buffer , WavpackHeaderFormat ) ; while ( wcount -- ) { csum = ( csum * 3 ) + csptr [ 0 ] + ( csptr [ 1 ] << 8 ) ; csptr += 2 ; } WavpackLittleEndianToNative ( ( WavpackHeader * ) buffer , WavpackHeaderFormat ) ; # endif if ( meta_bc == 4 ) { <S2SV_StartBug> if ( * dp ++ != ( csum & 0xff ) || * dp ++ != ( ( csum >> 8 ) & 0xff ) || * dp ++ != ( ( csum >> 16 ) & 0xff ) || * dp ++ != ( ( csum >> 24 ) & 0xff ) ) <S2SV_EndBug> return FALSE ; } else { csum ^= csum >> 16 ; <S2SV_StartBug> if ( * dp ++ != ( csum & 0xff ) || * dp ++ != ( ( csum >> 8 ) & 0xff ) ) <S2SV_EndBug> return FALSE ; } checksum_passed ++ ; } bcount -= meta_bc ; dp += meta_bc ; } return ( bcount == 0 ) && ( ! verify_checksum || ! ( wphdr -> flags & HAS_CHECKSUM ) || checksum_passed ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( * dp <S2SV_ModEnd> != ( csum <S2SV_ModStart> 0xff ) || dp [ 1 ] <S2SV_ModEnd> != ( ( <S2SV_ModStart> 0xff ) || dp [ 2 ] <S2SV_ModEnd> != ( ( <S2SV_ModStart> 0xff ) || dp [ 3 ] <S2SV_ModEnd> != ( ( <S2SV_ModStart> ( * dp <S2SV_ModEnd> != ( csum <S2SV_ModStart> 0xff ) || dp [ 1 ] <S2SV_ModEnd> != ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 void impeg2d_next_code ( dec_state_t * ps_dec , UWORD32 u4_start_code_val ) { stream_t * ps_stream ; ps_stream = & ps_dec -> s_bit_stream ; impeg2d_bit_stream_flush_to_byte_boundary ( ps_stream ) ; <S2SV_StartBug> while ( ( impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) != u4_start_code_val ) <S2SV_EndBug> <S2SV_StartBug> && ( ps_dec -> s_bit_stream . u4_offset <= ps_dec -> s_bit_stream . u4_max_offset ) ) <S2SV_EndBug> { if ( impeg2d_bit_stream_get ( ps_stream , 8 ) != 0 ) { } } return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != u4_start_code_val ) && <S2SV_ModEnd> ( ps_dec -> <S2SV_ModStart> s_bit_stream . u4_offset < <S2SV_ModEnd> ps_dec -> s_bit_stream\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 void MSG_WriteBits ( msg_t * msg , int value , int bits ) { int i ; oldsize += bits ; <S2SV_StartBug> if ( msg -> maxsize - msg -> cursize < 4 ) { <S2SV_EndBug> msg -> overflowed = qtrue ; return ; } if ( bits == 0 || bits < - 31 || bits > 32 ) { Com_Error ( ERR_DROP , \"MSG_WriteBits:<S2SV_blank>bad<S2SV_blank>bits<S2SV_blank>%i\" , bits ) ; } if ( bits < 0 ) { bits = - bits ; } if ( msg -> oob ) { <S2SV_StartBug> if ( bits == 8 ) { <S2SV_EndBug> msg -> data [ msg -> cursize ] = value ; msg -> cursize += 1 ; msg -> bit += 8 ; } else if ( bits == 16 ) { short temp = value ; CopyLittleShort ( & msg -> data [ msg -> cursize ] , & temp ) ; msg -> cursize += 2 ; msg -> bit += 16 ; } else if ( bits == 32 ) { CopyLittleLong ( & msg -> data [ msg -> cursize ] , & value ) ; msg -> cursize += 4 ; msg -> bit += 32 ; } else { Com_Error ( ERR_DROP , \"can\\'t<S2SV_blank>write<S2SV_blank>%d<S2SV_blank>bits\" , bits ) ; } } else { value &= ( 0xffffffff >> ( 32 - bits ) ) ; if ( bits & 7 ) { int nbits ; <S2SV_StartBug> nbits = bits & 7 ; <S2SV_EndBug> for ( i = 0 ; i < nbits ; i ++ ) { Huff_putBit ( ( value & 1 ) , msg -> data , & msg -> bit ) ; value = ( value >> 1 ) ; } bits = bits - nbits ; } if ( bits ) { for ( i = 0 ; i < bits ; i += 8 ) { <S2SV_StartBug> Huff_offsetTransmit ( & msgHuff . compressor , ( value & 0xff ) , msg -> data , & msg -> bit ) ; <S2SV_EndBug> value = ( value >> 8 ) ; <S2SV_StartBug> } <S2SV_EndBug> } msg -> cursize = ( msg -> bit >> 3 ) + 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( msg -> overflowed ) { <S2SV_ModEnd> return ; } <S2SV_ModStart> { if ( msg -> cursize + ( bits >> 3 ) > msg -> maxsize ) { msg -> overflowed = qtrue ; return ; } if ( <S2SV_ModStart> & 7 ; if ( msg -> bit + nbits > msg -> maxsize << 3 ) { msg -> overflowed = qtrue ; return ; } <S2SV_ModStart> msg -> bit , msg -> maxsize << 3 <S2SV_ModStart> 8 ) ; if ( msg -> bit > msg -> maxsize << 3 ) { msg -> overflowed = qtrue ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 long FS_FOpenFileRead ( const char * filename , fileHandle_t * file , qboolean uniqueFILE ) { searchpath_t * search ; long len ; <S2SV_StartBug> if ( ! fs_searchpaths ) <S2SV_EndBug> Com_Error ( ERR_FATAL , \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; <S2SV_StartBug> for ( search = fs_searchpaths ; search ; search = search -> next ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> len = FS_FOpenFileReadDir ( filename , search , file , uniqueFILE , qfalse ) ; if ( file == NULL ) { if ( len > 0 ) return len ; } else { if ( len >= 0 && * file ) return len ; } } # ifdef FS_MISSING if ( missingFiles ) fprintf ( missingFiles , \"%s\\\\n\" , filename ) ; # endif if ( file ) { * file = 0 ; return - 1 ; } else { return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long len ; qboolean isLocalConfig ; <S2SV_ModStart> \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; isLocalConfig = ! strcmp ( filename , \"autoexec.cfg\" ) || ! strcmp ( filename , Q3CONFIG_CFG ) ; <S2SV_ModStart> next ) { if ( isLocalConfig && search -> pack ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5352\n\n```\nCWE-000 int main ( int argc , char * argv [ ] ) { OM_uint32 minor , major ; gss_ctx_id_t context ; gss_union_ctx_id_desc uctx ; krb5_gss_ctx_id_rec kgctx ; krb5_key k1 , k2 ; krb5_keyblock kb1 , kb2 ; gss_buffer_desc in , out ; unsigned char k1buf [ 32 ] , k2buf [ 32 ] , outbuf [ 44 ] ; size_t i ; context = ( gss_ctx_id_t ) & uctx ; uctx . mech_type = & mech_krb5 ; uctx . internal_ctx_id = ( gss_ctx_id_t ) & kgctx ; kgctx . k5_context = NULL ; <S2SV_StartBug> kgctx . have_acceptor_subkey = 1 ; <S2SV_EndBug> kb1 . contents = k1buf ; kb2 . contents = k2buf ; for ( i = 0 ; i < sizeof ( tests ) / sizeof ( * tests ) ; i ++ ) { kb1 . enctype = tests [ i ] . enctype ; kb1 . length = fromhex ( tests [ i ] . key1 , k1buf ) ; check_k5err ( NULL , \"create_key\" , krb5_k_create_key ( NULL , & kb1 , & k1 ) ) ; kgctx . subkey = k1 ; kb2 . enctype = tests [ i ] . enctype ; kb2 . length = fromhex ( tests [ i ] . key2 , k2buf ) ; check_k5err ( NULL , \"create_key\" , krb5_k_create_key ( NULL , & kb2 , & k2 ) ) ; kgctx . acceptor_subkey = k2 ; in . length = 0 ; in . value = NULL ; major = gss_pseudo_random ( & minor , context , GSS_C_PRF_KEY_PARTIAL , & in , 44 , & out ) ; check_gsserr ( \"gss_pseudo_random\" , major , minor ) ; ( void ) fromhex ( tests [ i ] . out1 , outbuf ) ; assert ( out . length == 44 && memcmp ( out . value , outbuf , 44 ) == 0 ) ; ( void ) gss_release_buffer ( & minor , & out ) ; in . length = strlen ( inputstr ) ; in . value = ( char * ) inputstr ; major = gss_pseudo_random ( & minor , context , GSS_C_PRF_KEY_FULL , & in , 44 , & out ) ; check_gsserr ( \"gss_pseudo_random\" , major , minor ) ; ( void ) fromhex ( tests [ i ] . out2 , outbuf ) ; assert ( out . length == 44 && memcmp ( out . value , outbuf , 44 ) == 0 ) ; ( void ) gss_release_buffer ( & minor , & out ) ; major = gss_pseudo_random ( & minor , context , GSS_C_PRF_KEY_FULL , & in , 0 , & out ) ; check_gsserr ( \"gss_pseudo_random\" , major , minor ) ; assert ( out . length == 0 ) ; ( void ) gss_release_buffer ( & minor , & out ) ; krb5_k_free_key ( NULL , k1 ) ; krb5_k_free_key ( NULL , k2 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; kgctx . established = 1 ; kgctx .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13048\n\n```\nCWE-125 static int rsvp_obj_print ( netdissect_options * ndo , const u_char * pptr , u_int plen , const u_char * tptr , const char * ident , u_int tlen , const struct rsvp_common_header * rsvp_com_header ) { const struct rsvp_object_header * rsvp_obj_header ; const u_char * obj_tptr ; union { const struct rsvp_obj_integrity_t * rsvp_obj_integrity ; const struct rsvp_obj_frr_t * rsvp_obj_frr ; } obj_ptr ; u_short rsvp_obj_len , rsvp_obj_ctype , obj_tlen , intserv_serv_tlen ; int hexdump , processed , padbytes , error_code , error_value , i , sigcheck ; union { float f ; uint32_t i ; } bw ; uint8_t namelen ; u_int action , subchannel ; while ( tlen >= sizeof ( struct rsvp_object_header ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct rsvp_object_header ) ) ; rsvp_obj_header = ( const struct rsvp_object_header * ) tptr ; rsvp_obj_len = EXTRACT_16BITS ( rsvp_obj_header -> length ) ; rsvp_obj_ctype = rsvp_obj_header -> ctype ; if ( rsvp_obj_len % 4 ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4\" , ident , rsvp_obj_len ) ) ; return - 1 ; } if ( rsvp_obj_len < sizeof ( struct rsvp_object_header ) ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>too<S2SV_blank>short<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%lu\" , ident , rsvp_obj_len , ( unsigned long ) sizeof ( const struct rsvp_object_header ) ) ) ; return - 1 ; } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>Object<S2SV_blank>(%u)<S2SV_blank>Flags:<S2SV_blank>[%s\" , ident , tok2str ( rsvp_obj_values , \"Unknown\" , rsvp_obj_header -> class_num ) , rsvp_obj_header -> class_num , ( ( rsvp_obj_header -> class_num ) & 0x80 ) ? \"ignore\" : \"reject\" ) ) ; if ( rsvp_obj_header -> class_num > 128 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ( ( rsvp_obj_header -> class_num ) & 0x40 ) ? \"and<S2SV_blank>forward\" : \"silently\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>if<S2SV_blank>unknown],<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( rsvp_ctype_values , \"Unknown\" , ( ( rsvp_obj_header -> class_num ) << 8 ) + rsvp_obj_ctype ) , rsvp_obj_ctype , rsvp_obj_len ) ) ; if ( tlen < rsvp_obj_len ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>goes<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>objects<S2SV_blank>TLV\" , ident ) ) ; return - 1 ; } obj_tptr = tptr + sizeof ( struct rsvp_object_header ) ; obj_tlen = rsvp_obj_len - sizeof ( struct rsvp_object_header ) ; if ( ! ND_TTEST2 ( * tptr , rsvp_obj_len ) ) return - 1 ; hexdump = FALSE ; switch ( rsvp_obj_header -> class_num ) { case RSVP_OBJ_SESSION : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + 5 ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in6_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + sizeof ( struct in6_addr ) + 1 ) , EXTRACT_16BITS ( obj_tptr + sizeof ( struct in6_addr ) + 2 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 36 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ip6addr_string ( ndo , obj_tptr + 20 ) ) ) ; obj_tlen -= 36 ; obj_tptr += 36 ; break ; case RSVP_CTYPE_14 : if ( obj_tlen < 26 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%08x,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ip6addr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 26 ; obj_tptr += 26 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : case RSVP_CTYPE_UNI_IPV4 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CONFIRM : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_NOTIFY_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SUGGESTED_LABEL : case RSVP_OBJ_UPSTREAM_LABEL : case RSVP_OBJ_RECOVERY_LABEL : case RSVP_OBJ_LABEL : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Generalized<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Waveband<S2SV_blank>ID:<S2SV_blank>%u%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>Label:<S2SV_blank>%u,<S2SV_blank>Stop<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_STYLE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Reservation<S2SV_blank>Style:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]\" , ident , tok2str ( rsvp_resstyle_values , \"Unknown\" , EXTRACT_24BITS ( obj_tptr + 1 ) ) , * ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TEMPLATE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \",%s<S2SV_blank>merge<S2SV_blank>capability\" , ( ( * ( obj_tptr + 4 ) ) & 0x80 ) ? \"no\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 4 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 6 ) ) & 0xfff ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Maximum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 8 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 10 ) ) & 0xfff ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum/Maximum<S2SV_blank>DLCI:<S2SV_blank>%u/%u,<S2SV_blank>%s%s<S2SV_blank>bit<S2SV_blank>DLCI\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0x7fffff , ( EXTRACT_32BITS ( obj_tptr + 8 ) ) & 0x7fffff , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 0 ) ? \"10\" : \"\" , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 2 ) ? \"23\" : \"\" ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>LSP<S2SV_blank>Encoding<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , tok2str ( gmpls_encoding_values , \"Unknown\" , * obj_tptr ) , * obj_tptr ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Switching<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Payload<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%04x)\" , ident , tok2str ( gmpls_switch_cap_values , \"Unknown\" , * ( obj_tptr + 1 ) ) , * ( obj_tptr + 1 ) , tok2str ( gmpls_payload_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RRO : case RSVP_OBJ_ERO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : while ( obj_tlen >= 4 ) { u_char length ; ND_TCHECK2 ( * obj_tptr , 4 ) ; length = * ( obj_tptr + 1 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_xro_values , \"Unknown<S2SV_blank>%u\" , RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) , length ) ) ; if ( length == 0 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>ERROR:<S2SV_blank>zero<S2SV_blank>length<S2SV_blank>ERO<S2SV_blank>subtype\" , ident ) ) ; break ; } switch ( RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) { u_char prefix_length ; case RSVP_OBJ_XRO_IPV4 : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; prefix_length = * ( obj_tptr + 6 ) ; if ( prefix_length != 32 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>Prefix<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>32\" , prefix_length ) ) ; goto invalid ; } ND_PRINT ( ( ndo , \",<S2SV_blank>%s,<S2SV_blank>%s/%u,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , RSVP_OBJ_XRO_MASK_LOOSE ( * obj_tptr ) ? \"Loose\" : \"Strict\" , ipaddr_string ( ndo , obj_tptr + 2 ) , * ( obj_tptr + 6 ) , bittok2str ( rsvp_obj_rro_flag_values , \"none\" , * ( obj_tptr + 7 ) ) ) ) ; break ; case RSVP_OBJ_XRO_LABEL : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x),<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%u\" , bittok2str ( rsvp_obj_rro_label_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) , tok2str ( rsvp_ctype_values , \"Unknown\" , * ( obj_tptr + 3 ) + 256 * RSVP_OBJ_RRO ) , * ( obj_tptr + 3 ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; } obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_HELLO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Instance:<S2SV_blank>0x%08x,<S2SV_blank>Destination<S2SV_blank>Instance:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RESTART_CAPABILITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Restart<S2SV_blank><S2SV_blank>Time:<S2SV_blank>%ums,<S2SV_blank>Recovery<S2SV_blank>Time:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SESSION_ATTRIBUTE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 4 ) return - 1 ; namelen = * ( obj_tptr + 3 ) ; if ( obj_tlen < 4 + namelen ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Session<S2SV_blank>Name:<S2SV_blank>\" , ident ) ) ; for ( i = 0 ; i < namelen ; i ++ ) safeputchar ( ndo , * ( obj_tptr + 4 + i ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x)\" , ident , ( int ) * obj_tptr , ( int ) * ( obj_tptr + 1 ) , bittok2str ( rsvp_session_attribute_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 + * ( obj_tptr + 3 ) ; obj_tptr += 4 + * ( obj_tptr + 3 ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_GENERALIZED_UNI : switch ( rsvp_obj_ctype ) { int subobj_type , af , subobj_len , total_subobj_len ; case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; total_subobj_len = obj_tlen ; while ( total_subobj_len > 0 ) { subobj_len = EXTRACT_16BITS ( obj_tptr ) ; subobj_type = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) >> 8 ; af = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) & 0x00FF ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>AF:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_generalized_uni_values , \"Unknown\" , subobj_type ) , subobj_type , tok2str ( af_values , \"Unknown\" , af ) , af , subobj_len ) ) ; if ( subobj_len == 0 ) goto invalid ; switch ( subobj_type ) { case RSVP_GEN_UNI_SUBOBJ_SOURCE_TNA_ADDRESS : case RSVP_GEN_UNI_SUBOBJ_DESTINATION_TNA_ADDRESS : switch ( af ) { case AFNUM_INET : if ( subobj_len < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv4<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_INET6 : if ( subobj_len < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv6<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_NSAP : if ( subobj_len ) { hexdump = TRUE ; } break ; } break ; case RSVP_GEN_UNI_SUBOBJ_DIVERSITY : if ( subobj_len ) { hexdump = TRUE ; } break ; case RSVP_GEN_UNI_SUBOBJ_EGRESS_LABEL : if ( subobj_len < 16 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>U-bit:<S2SV_blank>%x,<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u,<S2SV_blank>Logical<S2SV_blank>port<S2SV_blank>id:<S2SV_blank>%u,<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 31 ) , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0xFF ) , EXTRACT_32BITS ( obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 12 ) ) ) ; break ; case RSVP_GEN_UNI_SUBOBJ_SERVICE_LEVEL : if ( subobj_len < 8 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Service<S2SV_blank>level:<S2SV_blank>%u\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 24 ) ) ; break ; default : hexdump = TRUE ; break ; } total_subobj_len -= subobj_len ; obj_tptr += subobj_len ; obj_tlen += subobj_len ; } if ( total_subobj_len ) { hexdump = TRUE ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RSVP_HOP : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; if ( obj_tlen ) hexdump = TRUE ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 16 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; hexdump = TRUE ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_TIME_VALUES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Refresh<S2SV_blank>Period:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TSPEC : case RSVP_OBJ_ADSPEC : case RSVP_OBJ_FLOWSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Msg-Version:<S2SV_blank>%u,<S2SV_blank>length:<S2SV_blank>%u\" , ident , ( * obj_tptr & 0xf0 ) >> 4 , EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( obj_tlen >= 4 ) { intserv_serv_tlen = EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Service<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>break<S2SV_blank>bit<S2SV_blank>%s<S2SV_blank>set,<S2SV_blank>Service<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_intserv_service_type_values , \"unknown\" , * ( obj_tptr ) ) , * ( obj_tptr ) , ( * ( obj_tptr + 1 ) & 0x80 ) ? \"\" : \"not\" , intserv_serv_tlen ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( intserv_serv_tlen >= 4 ) { processed = rsvp_intserv_print ( ndo , obj_tptr , obj_tlen ) ; if ( processed == 0 ) break ; obj_tlen -= processed ; intserv_serv_tlen -= processed ; obj_tptr += processed ; } } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FILTERSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flow<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_24BITS ( obj_tptr + 17 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FASTREROUTE : obj_ptr . rsvp_obj_frr = ( const struct rsvp_obj_frr_t * ) obj_tptr ; <S2SV_StartBug> bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ; <S2SV_EndBug> <S2SV_StartBug> switch ( rsvp_obj_ctype ) { <S2SV_EndBug> case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_frr_t ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include-any:<S2SV_blank>0x%08x,<S2SV_blank>Exclude-any:<S2SV_blank>0x%08x,<S2SV_blank>Include-all:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_all ) ) ) ; obj_tlen -= sizeof ( struct rsvp_obj_frr_t ) ; obj_tptr += sizeof ( struct rsvp_obj_frr_t ) ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 16 ) return - 1 ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , <S2SV_EndBug> ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include<S2SV_blank>Colors:<S2SV_blank>0x%08x,<S2SV_blank>Exclude<S2SV_blank>Colors:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_DETOUR : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : while ( obj_tlen >= 8 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>PLR-ID:<S2SV_blank>%s,<S2SV_blank>Avoid-Node-ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CLASSTYPE : case RSVP_OBJ_CLASSTYPE_OLD : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>CT:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) & 0x7 ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ERROR_SPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; error_code = * ( obj_tptr + 5 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 6 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + 4 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE : case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE_OLD : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_diffserv_te_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>Unknown<S2SV_blank>Error<S2SV_blank>Value<S2SV_blank>(%u)\" , error_value ) ) ; break ; } obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; error_code = * ( obj_tptr + 17 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 18 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + 16 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : break ; } obj_tlen -= 20 ; obj_tptr += 20 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_PROPERTIES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; padbytes = EXTRACT_16BITS ( obj_tptr + 2 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>TLV<S2SV_blank>count:<S2SV_blank>%u,<S2SV_blank>padding<S2SV_blank>bytes:<S2SV_blank>%u\" , ident , EXTRACT_16BITS ( obj_tptr ) , padbytes ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 2 + padbytes ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(0x%02x),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_prop_tlv_values , \"unknown\" , * obj_tptr ) , * obj_tptr , * ( obj_tptr + 1 ) ) ) ; if ( obj_tlen < * ( obj_tptr + 1 ) ) return - 1 ; if ( * ( obj_tptr + 1 ) < 2 ) return - 1 ; print_unknown_data ( ndo , obj_tptr + 2 , \"\\\\n\\\\t\\\\t\" , * ( obj_tptr + 1 ) - 2 ) ; obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_MESSAGE_ID : case RSVP_OBJ_MESSAGE_ID_ACK : case RSVP_OBJ_MESSAGE_ID_LIST : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[0x%02x],<S2SV_blank>epoch:<S2SV_blank>%u\" , ident , * obj_tptr , EXTRACT_24BITS ( obj_tptr + 1 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message-ID<S2SV_blank>0x%08x<S2SV_blank>(%u)\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_INTEGRITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_integrity_t ) ) return - 1 ; obj_ptr . rsvp_obj_integrity = ( const struct rsvp_obj_integrity_t * ) obj_tptr ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Key-ID<S2SV_blank>0x%04x%08x,<S2SV_blank>Sequence<S2SV_blank>0x%08x%08x,<S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , EXTRACT_16BITS ( obj_ptr . rsvp_obj_integrity -> key_id ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> key_id + 2 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence + 4 ) , bittok2str ( rsvp_obj_integrity_flag_values , \"none\" , obj_ptr . rsvp_obj_integrity -> flags ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>MD5-sum<S2SV_blank>0x%08x%08x%08x%08x<S2SV_blank>\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 4 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 8 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 12 ) ) ) ; sigcheck = signature_verify ( ndo , pptr , plen , obj_ptr . rsvp_obj_integrity -> digest , rsvp_clear_checksum , rsvp_com_header ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , tok2str ( signature_check_values , \"Unknown\" , sigcheck ) ) ) ; obj_tlen += sizeof ( struct rsvp_obj_integrity_t ) ; obj_tptr += sizeof ( struct rsvp_obj_integrity_t ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ADMIN_STATUS : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , bittok2str ( rsvp_obj_admin_status_flag_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_SET : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; action = ( EXTRACT_16BITS ( obj_tptr ) >> 8 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Action:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_label_set_action_values , \"Unknown\" , action ) , action , ( ( EXTRACT_32BITS ( obj_tptr ) & 0x7F ) ) ) ) ; switch ( action ) { case LABEL_SET_INCLUSIVE_RANGE : case LABEL_SET_EXCLUSIVE_RANGE : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>range:<S2SV_blank>%u,<S2SV_blank>End<S2SV_blank>range:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : obj_tlen -= 4 ; obj_tptr += 4 ; subchannel = 1 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subchannel<S2SV_blank>#%u:<S2SV_blank>%u\" , ident , subchannel , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; subchannel ++ ; } break ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_S2L : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SCOPE : case RSVP_OBJ_POLICY_DATA : case RSVP_OBJ_ACCEPT_LABEL_SET : case RSVP_OBJ_PROTECTION : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 || hexdump == TRUE ) print_unknown_data ( ndo , tptr + sizeof ( struct rsvp_object_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , rsvp_obj_len - sizeof ( struct rsvp_object_header ) ) ; tptr += rsvp_obj_len ; tlen -= rsvp_obj_len ; } return 0 ; invalid : ND_PRINT ( ( ndo , \"%s\" , istr ) ) ; return - 1 ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) obj_tptr ; switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_frr_t ) ) return - 1 ; <S2SV_ModStart> bandwidth ) ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> - 1 ; bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_use_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> const int reference_flag = va_arg ( args , int ) ; vp9_use_as_reference ( ctx -> cpi , reference_flag ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8957\n\n```\nCWE-119 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , length ; ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; <S2SV_StartBug> image -> storage_class = PseudoClass ; <S2SV_EndBug> image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; <S2SV_StartBug> } <S2SV_EndBug> switch ( sun_info . maptype ) { <S2SV_StartBug> case RMT_NONE : <S2SV_EndBug> { if ( sun_info . depth < 24 ) { if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case RMT_EQUAL_RGB : { unsigned char <S2SV_StartBug> * sun_colormap ; <S2SV_EndBug> if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( sun_info . depth >= 8 ) && ( ( number_pixels * ( ( sun_info . depth + 7 ) / 8 ) ) > sun_info . length ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( sun_info . length , bytes_per_line * sun_info . width ) , sizeof ( * sun_data ) ) ; if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; sun_pixels = sun_data ; bytes_per_line = 0 ; if ( sun_info . type == RT_ENCODED ) { size_t height ; height = sun_info . height ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * height ) ; sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; } p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { if ( bytes_per_line == 0 ) bytes_per_line = image -> columns ; length = image -> rows * ( image -> columns + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; image -> <S2SV_ModEnd> colors = sun_info <S2SV_ModStart> / 3 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_ModStart> maptype ) { <S2SV_ModEnd> case RMT_EQUAL_RGB : <S2SV_ModStart> char * sun_colormap <S2SV_ModEnd> ; sun_colormap =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rc_get_one_pass_vbr_params ( VP9_COMP * cpi ) { VP9_COMMON * const cm = & cpi -> common ; RATE_CONTROL * const rc = & cpi -> rc ; int target ; if ( ! cpi -> refresh_alt_ref_frame && ( cm -> current_video_frame == 0 || <S2SV_StartBug> ( cm -> frame_flags & FRAMEFLAGS_KEY ) || <S2SV_EndBug> rc -> frames_to_key == 0 || <S2SV_StartBug> ( cpi -> oxcf . auto_key && test_for_kf_one_pass ( cpi ) ) ) ) { <S2SV_EndBug> cm -> frame_type = KEY_FRAME ; rc -> this_key_frame_forced = cm -> current_video_frame != 0 && rc -> frames_to_key == 0 ; <S2SV_StartBug> rc -> frames_to_key = cpi -> key_frame_frequency ; <S2SV_EndBug> rc -> kf_boost = DEFAULT_KF_BOOST ; rc -> source_alt_ref_active = 0 ; } else { cm -> frame_type = INTER_FRAME ; } if ( rc -> frames_till_gf_update_due == 0 ) { <S2SV_StartBug> rc -> baseline_gf_interval = DEFAULT_GF_INTERVAL ; <S2SV_EndBug> rc -> frames_till_gf_update_due = rc -> baseline_gf_interval ; if ( rc -> frames_till_gf_update_due > rc -> frames_to_key ) <S2SV_StartBug> rc -> frames_till_gf_update_due = rc -> frames_to_key ; <S2SV_EndBug> cpi -> refresh_golden_frame = 1 ; rc -> source_alt_ref_pending = USE_ALTREF_FOR_ONE_PASS ; rc -> gfu_boost = DEFAULT_GF_BOOST ; } if ( cm -> frame_type == KEY_FRAME ) target = calc_iframe_target_size_one_pass_vbr ( cpi ) ; else target = calc_pframe_target_size_one_pass_vbr ( cpi ) ; vp9_rc_set_frame_target ( cpi , target ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 || ( cpi <S2SV_ModEnd> -> frame_flags & <S2SV_ModStart> . auto_key && 0 <S2SV_ModEnd> ) ) ) <S2SV_ModStart> = cpi -> oxcf . key_freq <S2SV_ModEnd> ; rc -> <S2SV_ModStart> -> baseline_gf_interval = ( rc -> min_gf_interval + rc -> max_gf_interval ) / 2 <S2SV_ModEnd> ; rc -> <S2SV_ModStart> -> frames_to_key ) { rc -> frames_till_gf_update_due = rc -> frames_to_key ; rc -> constrained_gf_group = 1 ; } else { rc -> constrained_gf_group = 0 ; } <S2SV_ModEnd> cpi -> refresh_golden_frame\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static struct nfs4_opendata * nfs4_open_recoverdata_alloc ( struct nfs_open_context * ctx , struct nfs4_state * state ) { struct nfs4_opendata * opendata ; <S2SV_StartBug> opendata = nfs4_opendata_alloc ( & ctx -> path , state -> owner , 0 , NULL ) ; <S2SV_EndBug> if ( opendata == NULL ) return ERR_PTR ( - ENOMEM ) ; opendata -> state = state ; atomic_inc ( & state -> count ) ; return opendata ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> state -> owner , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6520\n\n```\nCWE-264 struct tcp_sock_t * tcp_open ( uint16_t port ) { struct tcp_sock_t * this = calloc ( 1 , sizeof * this ) ; if ( this == NULL ) { <S2SV_StartBug> ERR ( \"callocing<S2SV_blank>this<S2SV_blank>failed\" ) ; <S2SV_EndBug> goto error ; } this -> sd = - 1 ; <S2SV_StartBug> this -> sd = socket ( AF_INET6 , SOCK_STREAM , 0 ) ; <S2SV_EndBug> if ( this -> sd < 0 ) { <S2SV_StartBug> ERR ( \"sockect<S2SV_blank>open<S2SV_blank>failed\" ) ; <S2SV_EndBug> goto error ; } struct sockaddr_in6 addr ; memset ( & addr , 0 , sizeof addr ) ; <S2SV_StartBug> addr . sin6_family = AF_INET6 ; <S2SV_EndBug> addr . sin6_port = htons ( port ) ; <S2SV_StartBug> addr . sin6_addr = in6addr_any ; <S2SV_EndBug> if ( bind ( this -> sd , ( struct sockaddr * ) & addr , sizeof addr ) < 0 ) { if ( g_options . only_desired_port == 1 ) <S2SV_StartBug> ERR ( \"Bind<S2SV_blank>on<S2SV_blank>port<S2SV_blank>failed.<S2SV_blank>\" <S2SV_EndBug> \"Requested<S2SV_blank>port<S2SV_blank>may<S2SV_blank>be<S2SV_blank>taken<S2SV_blank>or<S2SV_blank>require<S2SV_blank>root<S2SV_blank>permissions.\" ) ; goto error ; } if ( listen ( this -> sd , HTTP_MAX_PENDING_CONNS ) < 0 ) { <S2SV_StartBug> ERR ( \"listen<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>socket\" ) ; <S2SV_EndBug> goto error ; } return this ; error : if ( this != NULL ) { if ( this -> sd != - 1 ) { close ( this -> sd ) ; } free ( this ) ; } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ERR ( \"IPv4:<S2SV_blank>callocing<S2SV_blank>this<S2SV_blank>failed\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> = socket ( AF_INET <S2SV_ModEnd> , SOCK_STREAM , <S2SV_ModStart> { ERR ( \"IPv4<S2SV_blank>socket<S2SV_blank>open<S2SV_blank>failed\" ) ; goto error ; } struct sockaddr_in <S2SV_ModEnd> addr ; memset <S2SV_ModStart> ; addr . sin_family = AF_INET ; addr . sin_port <S2SV_ModEnd> = htons ( <S2SV_ModStart> ; addr . sin_addr . s_addr = htonl ( 0x7F000001 ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ERR ( \"IPv4<S2SV_blank>bind<S2SV_blank>on<S2SV_blank>port<S2SV_blank>failed.<S2SV_blank>\" <S2SV_ModEnd> \"Requested<S2SV_blank>port<S2SV_blank>may<S2SV_blank>be<S2SV_blank>taken<S2SV_blank>or<S2SV_blank>require<S2SV_blank>root<S2SV_blank>permissions.\" ) ; <S2SV_ModStart> { ERR ( \"IPv4<S2SV_blank>listen<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>socket\" <S2SV_ModEnd> ) ; goto\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5358\n\n```\nCWE-20 static void dissect_pktap ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree ) { proto_tree * pktap_tree = NULL ; proto_item * ti = NULL ; tvbuff_t * next_tvb ; int offset = 0 ; guint32 pkt_len , rectype , dlt ; <S2SV_StartBug> col_set_str ( pinfo -> cinfo , COL_PROTOCOL , \"PKTAP\" ) ; <S2SV_EndBug> col_clear ( pinfo -> cinfo , COL_INFO ) ; pkt_len = tvb_get_letohl ( tvb , offset ) ; col_add_fstr ( pinfo -> cinfo , COL_INFO , \"PKTAP,<S2SV_blank>%u<S2SV_blank>byte<S2SV_blank>header\" , pkt_len ) ; ti = proto_tree_add_item ( tree , proto_pktap , tvb , offset , pkt_len , ENC_NA ) ; pktap_tree = proto_item_add_subtree ( ti , ett_pktap ) ; proto_tree_add_item ( pktap_tree , hf_pktap_hdrlen , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; if ( pkt_len < MIN_PKTAP_HDR_LEN ) { proto_tree_add_expert ( tree , pinfo , & ei_pktap_hdrlen_too_short , tvb , offset , 4 ) ; return ; } offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_rectype , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; rectype = tvb_get_letohl ( tvb , offset ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_dlt , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; dlt = tvb_get_letohl ( tvb , offset ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_ifname , tvb , offset , 24 , ENC_ASCII | ENC_NA ) ; offset += 24 ; proto_tree_add_item ( pktap_tree , hf_pktap_flags , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_pfamily , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_llhdrlen , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_lltrlrlen , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_pid , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_cmdname , tvb , offset , 20 , ENC_UTF_8 | ENC_NA ) ; offset += 20 ; proto_tree_add_item ( pktap_tree , hf_pktap_svc_class , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_iftype , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; offset += 2 ; proto_tree_add_item ( pktap_tree , hf_pktap_ifunit , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; offset += 2 ; proto_tree_add_item ( pktap_tree , hf_pktap_epid , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( pktap_tree , hf_pktap_ecmdname , tvb , offset , 20 , ENC_UTF_8 | ENC_NA ) ; if ( rectype == PKT_REC_PACKET ) { next_tvb = tvb_new_subset_remaining ( tvb , pkt_len ) ; <S2SV_StartBug> dissector_try_uint ( wtap_encap_dissector_table , <S2SV_EndBug> <S2SV_StartBug> wtap_pcap_encap_to_wtap_encap ( dlt ) , next_tvb , pinfo , tree ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , dlt ; int wtap_encap ; struct eth_phdr eth ; void * phdr ; <S2SV_ModStart> pkt_len ) ; wtap_encap = wtap_pcap_encap_to_wtap_encap ( dlt ) ; switch ( wtap_encap ) { case WTAP_ENCAP_ETHERNET : eth . fcs_len = - 1 ; phdr = & eth ; break ; default : phdr = NULL ; break ; } dissector_try_uint_new <S2SV_ModEnd> ( wtap_encap_dissector_table , <S2SV_ModStart> ( wtap_encap_dissector_table , wtap_encap <S2SV_ModEnd> , next_tvb , <S2SV_ModStart> pinfo , tree , TRUE , phdr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rc_postencode_update ( VP9_COMP * cpi , uint64_t bytes_used ) { <S2SV_StartBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_EndBug> <S2SV_StartBug> const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> RATE_CONTROL * const rc = & cpi -> rc ; <S2SV_StartBug> cm -> last_frame_type = cm -> frame_type ; <S2SV_EndBug> rc -> projected_frame_size = ( int ) ( bytes_used << 3 ) ; vp9_rc_update_rate_correction_factors ( <S2SV_StartBug> cpi , ( cpi -> sf . recode_loop >= ALLOW_RECODE_KFARFGF || <S2SV_EndBug> oxcf -> end_usage == USAGE_STREAM_FROM_SERVER ) ? 2 : 0 ) ; if ( cm -> frame_type == KEY_FRAME ) { <S2SV_StartBug> rc -> last_q [ KEY_FRAME ] = cm -> base_qindex ; <S2SV_EndBug> rc -> avg_frame_qindex [ KEY_FRAME ] = ROUND_POWER_OF_TWO ( <S2SV_StartBug> 3 * rc -> avg_frame_qindex [ KEY_FRAME ] + cm -> base_qindex , 2 ) ; <S2SV_EndBug> <S2SV_StartBug> } else if ( ! rc -> is_src_frame_alt_ref && <S2SV_EndBug> <S2SV_StartBug> ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) && <S2SV_EndBug> <S2SV_StartBug> ! ( cpi -> use_svc && oxcf -> end_usage == USAGE_STREAM_FROM_SERVER ) ) { <S2SV_EndBug> <S2SV_StartBug> rc -> last_q [ 2 ] = cm -> base_qindex ; <S2SV_EndBug> <S2SV_StartBug> rc -> avg_frame_qindex [ 2 ] = ROUND_POWER_OF_TWO ( <S2SV_EndBug> <S2SV_StartBug> 3 * rc -> avg_frame_qindex [ 2 ] + cm -> base_qindex , 2 ) ; <S2SV_EndBug> } else { rc -> last_q [ INTER_FRAME ] = cm -> base_qindex ; rc -> avg_frame_qindex [ INTER_FRAME ] = ROUND_POWER_OF_TWO ( 3 * rc -> avg_frame_qindex [ INTER_FRAME ] + cm -> base_qindex , 2 ) ; rc -> ni_frames ++ ; <S2SV_StartBug> rc -> tot_q += vp9_convert_qindex_to_q ( cm -> base_qindex ) ; <S2SV_EndBug> <S2SV_StartBug> rc -> avg_q = rc -> tot_q / ( double ) rc -> ni_frames ; <S2SV_EndBug> <S2SV_StartBug> rc -> ni_tot_qi += cm -> base_qindex ; <S2SV_EndBug> rc -> ni_av_qi = rc -> ni_tot_qi / rc -> ni_frames ; } <S2SV_StartBug> if ( ( cm -> base_qindex < rc -> last_boosted_qindex ) || <S2SV_EndBug> <S2SV_StartBug> ( ( cpi -> static_mb_pct < 100 ) && <S2SV_EndBug> <S2SV_StartBug> ( ( cm -> frame_type == KEY_FRAME ) || cpi -> refresh_alt_ref_frame || <S2SV_EndBug> ( cpi -> refresh_golden_frame && ! rc -> is_src_frame_alt_ref ) ) ) ) { <S2SV_StartBug> rc -> last_boosted_qindex = cm -> base_qindex ; <S2SV_EndBug> } update_buffer_level ( cpi , rc -> projected_frame_size ) ; if ( cm -> frame_type != KEY_FRAME ) { rc -> rolling_target_bits = ROUND_POWER_OF_TWO ( rc -> rolling_target_bits * 3 + rc -> this_frame_target , 2 ) ; rc -> rolling_actual_bits = ROUND_POWER_OF_TWO ( rc -> rolling_actual_bits * 3 + rc -> projected_frame_size , 2 ) ; rc -> long_rolling_target_bits = ROUND_POWER_OF_TWO ( rc -> long_rolling_target_bits * 31 + rc -> this_frame_target , 5 ) ; rc -> long_rolling_actual_bits = ROUND_POWER_OF_TWO ( rc -> long_rolling_actual_bits * 31 + rc -> projected_frame_size , 5 ) ; } rc -> total_actual_bits += rc -> projected_frame_size ; <S2SV_StartBug> rc -> total_target_bits += ( cm -> show_frame ? rc -> av_per_frame_bandwidth : 0 ) ; <S2SV_EndBug> rc -> total_target_vs_actual = rc -> total_actual_bits - rc -> total_target_bits ; <S2SV_StartBug> if ( oxcf -> play_alternate && cpi -> refresh_alt_ref_frame && <S2SV_EndBug> ( cm -> frame_type != KEY_FRAME ) ) update_alt_ref_frame_stats ( cpi ) ; else update_golden_frame_stats ( cpi ) ; <S2SV_StartBug> if ( cm -> frame_type == KEY_FRAME ) <S2SV_EndBug> rc -> frames_since_key = 0 ; if ( cm -> show_frame ) { rc -> frames_since_key ++ ; rc -> frames_to_key -- ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bytes_used ) { const <S2SV_ModStart> common ; const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> -> rc ; const int qindex = cm -> base_qindex ; if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ && cm -> seg . enabled ) { vp9_cyclic_refresh_postencode ( cpi ) ; } <S2SV_ModEnd> rc -> projected_frame_size <S2SV_ModStart> ; vp9_rc_update_rate_correction_factors ( cpi <S2SV_ModEnd> ) ; if <S2SV_ModStart> KEY_FRAME ] = qindex <S2SV_ModEnd> ; rc -> <S2SV_ModStart> KEY_FRAME ] + qindex <S2SV_ModEnd> , 2 ) <S2SV_ModStart> 2 ) ; if ( cpi -> use_svc ) { int i = 0 ; SVC * svc = & cpi -> svc ; for ( i = 0 ; i < svc -> number_temporal_layers ; ++ i ) { const int layer = LAYER_IDS_TO_IDX ( svc -> spatial_layer_id , i , svc -> number_temporal_layers ) ; LAYER_CONTEXT * lc = & svc -> layer_context [ layer ] ; RATE_CONTROL * lrc = & lc -> rc ; lrc -> last_q [ KEY_FRAME ] = rc -> last_q [ KEY_FRAME ] ; lrc -> avg_frame_qindex [ KEY_FRAME ] = rc -> avg_frame_qindex [ KEY_FRAME ] ; } } } else { if ( rc -> is_src_frame_alt_ref || ! <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> -> refresh_alt_ref_frame ) || <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> && oxcf -> rc_mode == VPX_CBR <S2SV_ModEnd> ) ) { <S2SV_ModStart> -> last_q [ INTER_FRAME ] = qindex <S2SV_ModEnd> ; rc -> <S2SV_ModStart> -> avg_frame_qindex [ INTER_FRAME ] = <S2SV_ModEnd> ROUND_POWER_OF_TWO ( 3 <S2SV_ModStart> -> avg_frame_qindex [ INTER_FRAME ] + qindex <S2SV_ModEnd> , 2 ) <S2SV_ModStart> += vp9_convert_qindex_to_q ( qindex , cm -> bit_depth <S2SV_ModEnd> ) ; rc <S2SV_ModStart> -> tot_q / <S2SV_ModEnd> rc -> ni_frames <S2SV_ModStart> -> ni_tot_qi += qindex <S2SV_ModEnd> ; rc -> <S2SV_ModStart> ni_frames ; } } if ( ( qindex <S2SV_ModEnd> < rc -> <S2SV_ModStart> last_boosted_qindex ) || <S2SV_ModEnd> ( cm -> <S2SV_ModStart> KEY_FRAME ) || ( ! rc -> constrained_gf_group && ( <S2SV_ModStart> -> last_boosted_qindex = qindex ; } if ( cm -> frame_type == KEY_FRAME ) rc -> last_kf_qindex = qindex ; <S2SV_ModEnd> update_buffer_level ( cpi <S2SV_ModStart> -> total_target_bits += <S2SV_ModEnd> cm -> show_frame <S2SV_ModStart> ? rc -> avg_frame_bandwidth : 0 <S2SV_ModEnd> ; rc -> <S2SV_ModStart> ; if ( ! cpi -> use_svc ) { if ( is_altref_enabled ( cpi ) <S2SV_ModEnd> && cpi -> <S2SV_ModStart> cpi ) ; } <S2SV_ModStart> -- ; } if ( oxcf -> pass != 0 ) { cpi -> resize_pending = rc -> next_frame_size_selector != rc -> frame_size_selector ; rc -> frame_size_selector = rc -> next_frame_size_selector ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static int _nfs4_do_open_reclaim ( struct nfs_open_context * ctx , struct nfs4_state * state ) { struct nfs_delegation * delegation ; struct nfs4_opendata * opendata ; <S2SV_StartBug> int delegation_type = 0 ; <S2SV_EndBug> int status ; opendata = nfs4_open_recoverdata_alloc ( ctx , state ) ; if ( IS_ERR ( opendata ) ) return PTR_ERR ( opendata ) ; opendata -> o_arg . claim = NFS4_OPEN_CLAIM_PREVIOUS ; opendata -> o_arg . fh = NFS_FH ( state -> inode ) ; rcu_read_lock ( ) ; delegation = rcu_dereference ( NFS_I ( state -> inode ) -> delegation ) ; if ( delegation != NULL && test_bit ( NFS_DELEGATION_NEED_RECLAIM , & delegation -> flags ) != 0 ) delegation_type = delegation -> type ; rcu_read_unlock ( ) ; opendata -> o_arg . u . delegation_type = delegation_type ; status = nfs4_open_recover ( opendata , state ) ; nfs4_opendata_put ( opendata ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * opendata ; fmode_t <S2SV_ModEnd> delegation_type = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6262\n\n```\nCWE-134 rrd_info_t * rrd_graph_v ( int argc , char * * argv ) { image_desc_t im ; rrd_info_t * grinfo ; char * old_locale ; rrd_graph_init ( & im ) ; old_locale = setlocale ( LC_NUMERIC , \"C\" ) ; rrd_graph_options ( argc , argv , & im ) ; if ( rrd_test_error ( ) ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; return NULL ; } if ( optind >= argc ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; rrd_set_error ( \"missing<S2SV_blank>filename\" ) ; return NULL ; } if ( strlen ( argv [ optind ] ) >= MAXPATH ) { rrd_set_error ( \"filename<S2SV_blank>(including<S2SV_blank>path)<S2SV_blank>too<S2SV_blank>long\" ) ; rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; return NULL ; } strncpy ( im . graphfile , argv [ optind ] , MAXPATH - 1 ) ; im . graphfile [ MAXPATH - 1 ] = '\\\\0' ; if ( strcmp ( im . graphfile , \"-\" ) == 0 ) { im . graphfile [ 0 ] = '\\\\0' ; } rrd_graph_script ( argc , argv , & im , 1 ) ; setlocale ( LC_NUMERIC , old_locale ) ; if ( rrd_test_error ( ) ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; return NULL ; } if ( graph_paint ( & im ) == - 1 ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; return NULL ; } if ( im . imginfo ) { rrd_infoval_t info ; char * path ; char * filename ; if ( bad_format_imginfo ( im . imginfo ) ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; <S2SV_StartBug> rrd_set_error ( \"bad<S2SV_blank>format<S2SV_blank>for<S2SV_blank>imginfo\" ) ; <S2SV_EndBug> return NULL ; } path = strdup ( im . graphfile ) ; filename = basename ( path ) ; info . u_str = sprintf_alloc ( im . imginfo , filename , ( long ) ( im . zoom * im . ximg ) , ( long ) ( im . zoom * im . yimg ) ) ; grinfo_push ( & im , sprintf_alloc ( \"image_info\" ) , RD_I_STR , info ) ; free ( info . u_str ) ; free ( path ) ; } if ( im . rendered_image ) { rrd_infoval_t img ; img . u_blo . size = im . rendered_image_size ; img . u_blo . ptr = im . rendered_image ; grinfo_push ( & im , sprintf_alloc ( \"image\" ) , RD_I_BLO , img ) ; } grinfo = im . grinfo ; im_free ( & im ) ; return grinfo ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> im ) ; <S2SV_ModEnd> return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-327(使用破解或有风险的加密算法)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19962\n\n```\nCWE-327 int wc_SignatureGenerate ( enum wc_HashType hash_type , enum wc_SignatureType sig_type , const byte * data , word32 data_len , byte * sig , word32 * sig_len , const void * key , word32 key_len , WC_RNG * rng ) { <S2SV_StartBug> int ret ; <S2SV_EndBug> word32 hash_len , hash_enc_len ; # ifdef WOLFSSL_SMALL_STACK byte * hash_data ; # else byte hash_data [ MAX_DER_DIGEST_SZ ] ; # endif if ( data == NULL || data_len <= 0 || sig == NULL || sig_len == NULL || * sig_len <= 0 || key == NULL || key_len <= 0 ) { return BAD_FUNC_ARG ; } if ( ( int ) * sig_len < wc_SignatureGetSize ( sig_type , key , key_len ) ) { WOLFSSL_MSG ( \"wc_SignatureGenerate:<S2SV_blank>Invalid<S2SV_blank>sig<S2SV_blank>type/len\" ) ; return BAD_FUNC_ARG ; } ret = wc_HashGetDigestSize ( hash_type ) ; if ( ret < 0 ) { WOLFSSL_MSG ( \"wc_SignatureGenerate:<S2SV_blank>Invalid<S2SV_blank>hash<S2SV_blank>type/len\" ) ; return ret ; } hash_enc_len = hash_len = ret ; # if ! defined ( NO_RSA ) && ! defined ( WOLFSSL_RSA_PUBLIC_ONLY ) if ( sig_type == WC_SIGNATURE_TYPE_RSA_W_ENC ) { hash_enc_len += MAX_DER_DIGEST_ASN_SZ ; } # endif # ifdef WOLFSSL_SMALL_STACK hash_data = ( byte * ) XMALLOC ( hash_enc_len , NULL , DYNAMIC_TYPE_TMP_BUFFER ) ; if ( hash_data == NULL ) { return MEMORY_E ; } # endif <S2SV_StartBug> ret = wc_Hash ( hash_type , data , data_len , hash_data , hash_len ) ; <S2SV_EndBug> if ( ret == 0 ) { if ( sig_type == WC_SIGNATURE_TYPE_RSA_W_ENC ) { # if defined ( NO_RSA ) || defined ( NO_ASN ) || defined ( WOLFSSL_RSA_PUBLIC_ONLY ) ret = SIG_TYPE_E ; # else ret = wc_SignatureDerEncode ( hash_type , hash_data , hash_len , & hash_enc_len ) ; # endif } if ( ret == 0 ) { ret = wc_SignatureGenerateHash ( hash_type , sig_type , <S2SV_StartBug> hash_data , hash_enc_len , sig , sig_len , key , key_len , rng ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug> # ifdef WOLFSSL_SMALL_STACK XFREE ( hash_data , NULL , DYNAMIC_TYPE_TMP_BUFFER ) ; # endif return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rng ) { return wc_SignatureGenerate_ex ( hash_type , sig_type <S2SV_ModEnd> , data , <S2SV_ModStart> , data_len , sig , <S2SV_ModEnd> sig_len , key <S2SV_ModStart> key_len , rng , 1 <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 static void findoprnd ( ITEM * ptr , int32 * pos ) <S2SV_StartBug> { <S2SV_EndBug> # ifdef BS_DEBUG elog ( DEBUG3 , ( ptr [ * pos ] . type == OPR ) ? \"%d<S2SV_blank><S2SV_blank>%c\" : \"%d<S2SV_blank><S2SV_blank>%d\" , * pos , ptr [ * pos ] . val ) ; # endif if ( ptr [ * pos ] . type == VAL ) { ptr [ * pos ] . left = 0 ; ( * pos ) -- ; } else if ( ptr [ * pos ] . val == ( int32 ) '!' ) { ptr [ * pos ] . left = - 1 ; ( * pos ) -- ; findoprnd ( ptr , pos ) ; } else { ITEM * curitem = & ptr [ * pos ] ; int32 tmp = * pos ; ( * pos ) -- ; findoprnd ( ptr , pos ) ; curitem -> left = * pos - tmp ; findoprnd ( ptr , pos ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pos ) { check_stack_depth ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static inline int check_entry_size_and_hooks ( struct arpt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct arpt_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct arpt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct arpt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_ARP_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { <S2SV_StartBug> pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" <S2SV_EndBug> \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { pr_debug <S2SV_ModEnd> ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static void record_and_restart ( struct perf_event * event , unsigned long val , <S2SV_StartBug> struct pt_regs * regs , int nmi ) <S2SV_EndBug> { u64 period = event -> hw . sample_period ; s64 prev , delta , left ; int record = 0 ; if ( event -> hw . state & PERF_HES_STOPPED ) { write_pmc ( event -> hw . idx , 0 ) ; return ; } prev = local64_read ( & event -> hw . prev_count ) ; delta = ( val - prev ) & 0xfffffffful ; local64_add ( delta , & event -> count ) ; val = 0 ; left = local64_read ( & event -> hw . period_left ) - delta ; if ( period ) { if ( left <= 0 ) { left += period ; if ( left <= 0 ) left = period ; record = 1 ; event -> hw . last_period = event -> hw . sample_period ; } if ( left < 0x80000000LL ) val = 0x80000000LL - left ; } write_pmc ( event -> hw . idx , val ) ; local64_set ( & event -> hw . prev_count , val ) ; local64_set ( & event -> hw . period_left , left ) ; perf_event_update_userpage ( event ) ; if ( record ) { struct perf_sample_data data ; perf_sample_data_init ( & data , 0 ) ; data . period = event -> hw . last_period ; <S2SV_StartBug> if ( perf_event_overflow ( event , nmi , & data , regs ) ) <S2SV_EndBug> fsl_emb_pmu_stop ( event , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pt_regs * regs <S2SV_ModEnd> ) { u64 <S2SV_ModStart> ( event , <S2SV_ModEnd> & data ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int em_ret_near_imm ( struct x86_emulate_ctxt * ctxt ) { int rc ; <S2SV_StartBug> ctxt -> dst . type = OP_REG ; <S2SV_EndBug> ctxt -> dst . addr . reg = & ctxt -> _eip ; ctxt -> dst . bytes = ctxt -> op_bytes ; <S2SV_StartBug> rc = emulate_pop ( ctxt , & ctxt -> dst . val , ctxt -> op_bytes ) ; <S2SV_EndBug> if ( rc != X86EMUL_CONTINUE ) return rc ; rsp_increment ( ctxt , ctxt -> src . val ) ; return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int rc ; unsigned long eip <S2SV_ModEnd> ; rc = <S2SV_ModStart> ctxt , & eip <S2SV_ModEnd> , ctxt -> <S2SV_ModStart> ctxt -> op_bytes ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; rc = assign_eip_near ( ctxt , eip\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7510\n\n```\nCWE-119 enum nss_status _nss_mymachines_getgrnam_r ( const char * name , struct group * gr , char * buffer , size_t buflen , int * errnop ) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL ; _cleanup_bus_message_unref_ sd_bus_message * reply = NULL ; _cleanup_bus_flush_close_unref_ sd_bus * bus = NULL ; const char * p , * e , * machine ; uint32_t mapped ; uid_t gid ; size_t l ; int r ; assert ( name ) ; assert ( gr ) ; p = startswith ( name , \"vg-\" ) ; if ( ! p ) goto not_found ; e = strrchr ( p , '-' ) ; if ( ! e || e == p ) goto not_found ; <S2SV_StartBug> r = parse_gid ( e + 1 , & gid ) ; <S2SV_EndBug> if ( r < 0 ) goto not_found ; machine = strndupa ( p , e - p ) ; if ( ! machine_name_is_valid ( machine ) ) goto not_found ; r = sd_bus_open_system ( & bus ) ; if ( r < 0 ) goto fail ; r = sd_bus_call_method ( bus , \"org.freedesktop.machine1\" , \"/org/freedesktop/machine1\" , \"org.freedesktop.machine1.Manager\" , \"MapFromMachineGroup\" , & error , & reply , \"su\" , machine , ( uint32_t ) gid ) ; if ( r < 0 ) { if ( sd_bus_error_has_name ( & error , BUS_ERROR_NO_SUCH_GROUP_MAPPING ) ) goto not_found ; goto fail ; } r = sd_bus_message_read ( reply , \"u\" , & mapped ) ; if ( r < 0 ) goto fail ; l = sizeof ( char * ) + strlen ( name ) + 1 ; if ( buflen < l ) { * errnop = ENOMEM ; return NSS_STATUS_TRYAGAIN ; } memzero ( buffer , sizeof ( char * ) ) ; strcpy ( buffer + sizeof ( char * ) , name ) ; gr -> gr_name = buffer + sizeof ( char * ) ; gr -> gr_gid = gid ; gr -> gr_passwd = ( char * ) \"*\" ; gr -> gr_mem = ( char * * ) buffer ; * errnop = 0 ; return NSS_STATUS_SUCCESS ; not_found : * errnop = 0 ; return NSS_STATUS_NOTFOUND ; fail : * errnop = - r ; return NSS_STATUS_UNAVAIL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto not_found ; if ( e - p > HOST_NAME_MAX - 1 ) goto not_found ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void reconstruct_inter_block ( int plane , int block , <S2SV_EndBug> BLOCK_SIZE plane_bsize , TX_SIZE tx_size , void * arg ) { struct inter_args * args = ( struct inter_args * ) arg ; VP9_COMMON * const cm = args -> cm ; <S2SV_StartBug> MACROBLOCKD * const xd = args -> xd ; <S2SV_EndBug> struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; <S2SV_StartBug> int x , y , eob ; <S2SV_EndBug> txfrm_block_to_raster_xy ( plane_bsize , tx_size , block , & x , & y ) ; <S2SV_StartBug> eob = vp9_decode_block_tokens ( cm , xd , plane , block , plane_bsize , x , y , <S2SV_EndBug> tx_size , args -> r ) ; <S2SV_StartBug> inverse_transform_block ( xd , plane , block , tx_size , <S2SV_EndBug> <S2SV_StartBug> & pd -> dst . buf [ 4 * y * pd -> dst . stride + 4 * x ] , <S2SV_EndBug> pd -> dst . stride , eob ) ; <S2SV_StartBug> * args -> eobtotal += eob ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int reconstruct_inter_block ( <S2SV_ModEnd> MACROBLOCKD * const <S2SV_ModStart> * const xd , vpx_reader * r , MB_MODE_INFO * const mbmi , int plane , int row , int col , TX_SIZE tx_size ) { <S2SV_ModEnd> struct macroblockd_plane * <S2SV_ModStart> plane ] ; const scan_order * sc = & vp9_default_scan_orders [ tx_size ] ; const int <S2SV_ModEnd> eob = vp9_decode_block_tokens <S2SV_ModStart> eob = vp9_decode_block_tokens <S2SV_ModEnd> ( xd , <S2SV_ModStart> , plane , sc , col , row , tx_size , r , mbmi -> segment_id ) ; inverse_transform_block_inter ( xd , plane <S2SV_ModEnd> , tx_size , <S2SV_ModStart> [ 4 * row <S2SV_ModEnd> * pd -> <S2SV_ModStart> + 4 * col <S2SV_ModEnd> ] , pd <S2SV_ModStart> eob ) ; return <S2SV_ModEnd> eob ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2523\n\n```\nCWE-20 static int dccp_error ( struct net * net , struct nf_conn * tmpl , struct sk_buff * skb , unsigned int dataoff , enum ip_conntrack_info * ctinfo , u_int8_t pf , unsigned int hooknum ) { struct dccp_hdr _dh , * dh ; unsigned int dccp_len = skb -> len - dataoff ; unsigned int cscov ; const char * msg ; <S2SV_StartBug> dh = skb_header_pointer ( skb , dataoff , sizeof ( _dh ) , & dh ) ; <S2SV_EndBug> if ( dh == NULL ) { msg = \"nf_ct_dccp:<S2SV_blank>short<S2SV_blank>packet<S2SV_blank>\" ; goto out_invalid ; } if ( dh -> dccph_doff * 4 < sizeof ( struct dccp_hdr ) || dh -> dccph_doff * 4 > dccp_len ) { msg = \"nf_ct_dccp:<S2SV_blank>truncated/malformed<S2SV_blank>packet<S2SV_blank>\" ; goto out_invalid ; } cscov = dccp_len ; if ( dh -> dccph_cscov ) { cscov = ( dh -> dccph_cscov - 1 ) * 4 ; if ( cscov > dccp_len ) { msg = \"nf_ct_dccp:<S2SV_blank>bad<S2SV_blank>checksum<S2SV_blank>coverage<S2SV_blank>\" ; goto out_invalid ; } } if ( net -> ct . sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && nf_checksum_partial ( skb , hooknum , dataoff , cscov , IPPROTO_DCCP , pf ) ) { msg = \"nf_ct_dccp:<S2SV_blank>bad<S2SV_blank>checksum<S2SV_blank>\" ; goto out_invalid ; } if ( dh -> dccph_type >= DCCP_PKT_INVALID ) { msg = \"nf_ct_dccp:<S2SV_blank>reserved<S2SV_blank>packet<S2SV_blank>type<S2SV_blank>\" ; goto out_invalid ; } return NF_ACCEPT ; out_invalid : if ( LOG_INVALID ( net , IPPROTO_DCCP ) ) nf_log_packet ( net , pf , 0 , skb , NULL , NULL , NULL , \"%s\" , msg ) ; return - NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) , & _dh <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4611\n\n```\nCWE-20 static int lz4_uncompress ( const char * source , char * dest , int osize ) { const BYTE * ip = ( const BYTE * ) source ; const BYTE * ref ; BYTE * op = ( BYTE * ) dest ; BYTE * const oend = op + osize ; BYTE * cpy ; unsigned token ; size_t length ; size_t dec32table [ ] = { 0 , 3 , 2 , 3 , 0 , 0 , 0 , 0 } ; # if LZ4_ARCH64 size_t dec64table [ ] = { 0 , 0 , 0 , - 1 , 0 , 1 , 2 , 3 } ; # endif while ( 1 ) { token = * ip ++ ; length = ( token >> ML_BITS ) ; if ( length == RUN_MASK ) { size_t len ; len = * ip ++ ; for ( ; len == 255 ; length += 255 ) len = * ip ++ ; <S2SV_StartBug> length += len ; <S2SV_EndBug> } cpy = op + length ; if ( unlikely ( cpy > oend - COPYLENGTH ) ) { if ( cpy != oend ) goto _output_error ; memcpy ( op , ip , length ) ; ip += length ; break ; } LZ4_WILDCOPY ( ip , op , cpy ) ; ip -= ( op - cpy ) ; op = cpy ; LZ4_READ_LITTLEENDIAN_16 ( ref , cpy , ip ) ; ip += 2 ; if ( unlikely ( ref < ( BYTE * const ) dest ) ) goto _output_error ; length = token & ML_MASK ; if ( length == ML_MASK ) { for ( ; * ip == 255 ; length += 255 ) ip ++ ; length += * ip ++ ; } if ( unlikely ( ( op - ref ) < STEPSIZE ) ) { # if LZ4_ARCH64 size_t dec64 = dec64table [ op - ref ] ; # else const int dec64 = 0 ; # endif op [ 0 ] = ref [ 0 ] ; op [ 1 ] = ref [ 1 ] ; op [ 2 ] = ref [ 2 ] ; op [ 3 ] = ref [ 3 ] ; op += 4 ; ref += 4 ; ref -= dec32table [ op - ref ] ; PUT4 ( ref , op ) ; op += STEPSIZE - 4 ; ref -= dec64 ; } else { LZ4_COPYSTEP ( ref , op ) ; } cpy = op + length - ( STEPSIZE - 4 ) ; if ( cpy > ( oend - COPYLENGTH ) ) { if ( cpy > oend ) goto _output_error ; LZ4_SECURECOPY ( ref , op , ( oend - COPYLENGTH ) ) ; while ( op < cpy ) * op ++ = * ref ++ ; op = cpy ; if ( op == oend ) goto _output_error ; continue ; } LZ4_SECURECOPY ( ref , op , cpy ) ; op = cpy ; } return ( int ) ( ( ( char * ) ip ) - source ) ; _output_error : return ( int ) ( - ( ( ( char * ) ip ) - source ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip ++ ; if ( unlikely ( length > ( size_t ) ( length + len ) ) ) goto _output_error ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7533\n\n```\nCWE-362 int __fsnotify_parent ( const struct path * path , struct dentry * dentry , __u32 mask ) { struct dentry * parent ; struct inode * p_inode ; int ret = 0 ; if ( ! dentry ) dentry = path -> dentry ; if ( ! ( dentry -> d_flags & DCACHE_FSNOTIFY_PARENT_WATCHED ) ) return 0 ; parent = dget_parent ( dentry ) ; p_inode = parent -> d_inode ; if ( unlikely ( ! fsnotify_inode_watches_children ( p_inode ) ) ) __fsnotify_update_child_dentry_flags ( p_inode ) ; else if ( p_inode -> i_fsnotify_mask & mask ) { <S2SV_StartBug> mask |= FS_EVENT_ON_CHILD ; <S2SV_EndBug> <S2SV_StartBug> if ( path ) <S2SV_EndBug> ret = fsnotify ( p_inode , mask , path , FSNOTIFY_EVENT_PATH , <S2SV_StartBug> dentry -> d_name . name , 0 ) ; <S2SV_EndBug> else ret = fsnotify ( p_inode , mask , dentry -> d_inode , FSNOTIFY_EVENT_INODE , <S2SV_StartBug> dentry -> d_name . name , 0 ) ; <S2SV_EndBug> } dput ( parent ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mask ) { struct name_snapshot name ; <S2SV_ModStart> |= FS_EVENT_ON_CHILD ; take_dentry_name_snapshot ( & name , dentry ) ; <S2SV_ModStart> , FSNOTIFY_EVENT_PATH , name <S2SV_ModEnd> . name , <S2SV_ModStart> , FSNOTIFY_EVENT_INODE , name <S2SV_ModEnd> . name , <S2SV_ModStart> name , 0 ) ; release_dentry_name_snapshot ( & name\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 int cdf_read_short_sector_chain ( const cdf_header_t * h , const cdf_sat_t * ssat , const cdf_stream_t * sst , cdf_secid_t sid , size_t len , cdf_stream_t * scn ) { <S2SV_StartBug> size_t ss = CDF_SEC_SIZE ( h ) , i , j ; <S2SV_EndBug> scn -> sst_len = cdf_count_chain ( ssat , sid , CDF_SEC_SIZE ( h ) ) ; scn -> sst_dirlen = len ; if ( sst -> sst_tab == NULL || scn -> sst_len == ( size_t ) - 1 ) return - 1 ; scn -> sst_tab = calloc ( scn -> sst_len , ss ) ; if ( scn -> sst_tab == NULL ) return - 1 ; for ( j = i = 0 ; sid >= 0 ; i ++ , j ++ ) { if ( j >= CDF_LOOP_LIMIT ) { DPRINTF ( ( \"Read<S2SV_blank>short<S2SV_blank>sector<S2SV_blank>chain<S2SV_blank>loop<S2SV_blank>limit\" ) ) ; errno = EFTYPE ; goto out ; } if ( i >= scn -> sst_len ) { DPRINTF ( ( \"Out<S2SV_blank>of<S2SV_blank>bounds<S2SV_blank>reading<S2SV_blank>short<S2SV_blank>sector<S2SV_blank>chain<S2SV_blank>\" \"%\" SIZE_T_FORMAT \"u<S2SV_blank>><S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , i , scn -> sst_len ) ) ; errno = EFTYPE ; goto out ; } if ( cdf_read_short_sector ( sst , scn -> sst_tab , i * ss , ss , h , sid ) != ( ssize_t ) ss ) { DPRINTF ( ( \"Reading<S2SV_blank>short<S2SV_blank>sector<S2SV_blank>chain<S2SV_blank>%d\" , sid ) ) ; goto out ; } sid = CDF_TOLE4 ( ( uint32_t ) ssat -> sat_tab [ sid ] ) ; } return 0 ; out : free ( scn -> sst_tab ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t ss = CDF_SHORT_SEC_SIZE <S2SV_ModEnd> ( h )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19048\n\n```\nCWE-401 static int hgcm_call_preprocess_linaddr ( const struct vmmdev_hgcm_function_parameter * src_parm , void * * bounce_buf_ret , size_t * extra ) { void * buf , * bounce_buf ; bool copy_in ; u32 len ; int ret ; buf = ( void * ) src_parm -> u . pointer . u . linear_addr ; len = src_parm -> u . pointer . size ; copy_in = src_parm -> type != VMMDEV_HGCM_PARM_TYPE_LINADDR_OUT ; if ( len > VBG_MAX_HGCM_USER_PARM ) return - E2BIG ; bounce_buf = kvmalloc ( len , GFP_KERNEL ) ; if ( ! bounce_buf ) return - ENOMEM ; <S2SV_StartBug> if ( copy_in ) { <S2SV_EndBug> ret = copy_from_user ( bounce_buf , ( void __user * ) buf , len ) ; if ( ret ) return - EFAULT ; } else { memset ( bounce_buf , 0 , len ) ; } <S2SV_StartBug> * bounce_buf_ret = bounce_buf ; <S2SV_EndBug> hgcm_call_add_pagelist_size ( bounce_buf , len , extra ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOMEM ; * bounce_buf_ret = bounce_buf ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> hgcm_call_add_pagelist_size ( bounce_buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7145\n\n```\nCWE-399 int SMB2_tcon ( const unsigned int xid , struct cifs_ses * ses , const char * tree , struct cifs_tcon * tcon , const struct nls_table * cp ) { struct smb2_tree_connect_req * req ; struct smb2_tree_connect_rsp * rsp = NULL ; struct kvec iov [ 2 ] ; int rc = 0 ; int resp_buftype ; int unc_path_len ; struct TCP_Server_Info * server ; __le16 * unc_path = NULL ; cifs_dbg ( FYI , \"TCON\\\\n\" ) ; if ( ( ses -> server ) && tree ) server = ses -> server ; else return - EIO ; if ( tcon && tcon -> bad_network_name ) return - ENOENT ; unc_path = kmalloc ( MAX_SHARENAME_LENGTH * 2 , GFP_KERNEL ) ; if ( unc_path == NULL ) return - ENOMEM ; unc_path_len = cifs_strtoUTF16 ( unc_path , tree , strlen ( tree ) , cp ) + 1 ; unc_path_len *= 2 ; if ( unc_path_len < 2 ) { kfree ( unc_path ) ; return - EINVAL ; } rc = small_smb2_init ( SMB2_TREE_CONNECT , tcon , ( void * * ) & req ) ; if ( rc ) { kfree ( unc_path ) ; return rc ; } if ( tcon == NULL ) { req -> hdr . SessionId = ses -> Suid ; } iov [ 0 ] . iov_base = ( char * ) req ; iov [ 0 ] . iov_len = get_rfc1002_length ( req ) + 4 - 1 ; req -> PathOffset = cpu_to_le16 ( sizeof ( struct smb2_tree_connect_req ) - 1 - 4 ) ; req -> PathLength = cpu_to_le16 ( unc_path_len - 2 ) ; iov [ 1 ] . iov_base = unc_path ; iov [ 1 ] . iov_len = unc_path_len ; inc_rfc1001_len ( req , unc_path_len - 1 ) ; rc = SendReceive2 ( xid , ses , iov , 2 , & resp_buftype , 0 ) ; rsp = ( struct smb2_tree_connect_rsp * ) iov [ 0 ] . iov_base ; if ( rc != 0 ) { if ( tcon ) { cifs_stats_fail_inc ( tcon , SMB2_TREE_CONNECT_HE ) ; tcon -> need_reconnect = true ; } goto tcon_error_exit ; } if ( tcon == NULL ) { ses -> ipc_tid = rsp -> hdr . TreeId ; goto tcon_exit ; } if ( rsp -> ShareType & SMB2_SHARE_TYPE_DISK ) cifs_dbg ( FYI , \"connection<S2SV_blank>to<S2SV_blank>disk<S2SV_blank>share\\\\n\" ) ; else if ( rsp -> ShareType & SMB2_SHARE_TYPE_PIPE ) { tcon -> ipc = true ; cifs_dbg ( FYI , \"connection<S2SV_blank>to<S2SV_blank>pipe<S2SV_blank>share\\\\n\" ) ; } else if ( rsp -> ShareType & SMB2_SHARE_TYPE_PRINT ) { tcon -> print = true ; cifs_dbg ( FYI , \"connection<S2SV_blank>to<S2SV_blank>printer\\\\n\" ) ; } else { cifs_dbg ( VFS , \"unknown<S2SV_blank>share<S2SV_blank>type<S2SV_blank>%d\\\\n\" , rsp -> ShareType ) ; rc = - EOPNOTSUPP ; goto tcon_error_exit ; } tcon -> share_flags = le32_to_cpu ( rsp -> ShareFlags ) ; tcon -> capabilities = rsp -> Capabilities ; tcon -> maximal_access = le32_to_cpu ( rsp -> MaximalAccess ) ; tcon -> tidStatus = CifsGood ; tcon -> need_reconnect = false ; tcon -> tid = rsp -> hdr . TreeId ; strlcpy ( tcon -> treeName , tree , sizeof ( tcon -> treeName ) ) ; if ( ( rsp -> Capabilities & SMB2_SHARE_CAP_DFS ) && ( ( tcon -> share_flags & SHI1005_FLAGS_DFS ) == 0 ) ) cifs_dbg ( VFS , \"DFS<S2SV_blank>capability<S2SV_blank>contradicts<S2SV_blank>DFS<S2SV_blank>flag\\\\n\" ) ; init_copy_chunk_defaults ( tcon ) ; if ( tcon -> ses -> server -> ops -> validate_negotiate ) rc = tcon -> ses -> server -> ops -> validate_negotiate ( xid , tcon ) ; tcon_exit : free_rsp_buf ( resp_buftype , rsp ) ; kfree ( unc_path ) ; return rc ; tcon_error_exit : if ( rsp -> hdr . Status == STATUS_BAD_NETWORK_NAME ) { cifs_dbg ( VFS , \"BAD_NETWORK_NAME:<S2SV_blank>%s\\\\n\" , tree ) ; <S2SV_StartBug> tcon -> bad_network_name = true ; <S2SV_EndBug> } goto tcon_exit ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tree ) ; if ( tcon )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14815\n\n```\nCWE-787 void mwifiex_set_uap_rates ( struct mwifiex_uap_bss_param * bss_cfg , struct cfg80211_ap_settings * params ) { struct ieee_types_header * rate_ie ; int var_offset = offsetof ( struct ieee80211_mgmt , u . beacon . variable ) ; const u8 * var_pos = params -> beacon . head + var_offset ; int len = params -> beacon . head_len - var_offset ; u8 rate_len = 0 ; rate_ie = ( void * ) cfg80211_find_ie ( WLAN_EID_SUPP_RATES , var_pos , len ) ; if ( rate_ie ) { <S2SV_StartBug> memcpy ( bss_cfg -> rates , rate_ie + 1 , rate_ie -> len ) ; <S2SV_EndBug> rate_len = rate_ie -> len ; } rate_ie = ( void * ) cfg80211_find_ie ( WLAN_EID_EXT_SUPP_RATES , params -> beacon . tail , params -> beacon . tail_len ) ; <S2SV_StartBug> if ( rate_ie ) <S2SV_EndBug> <S2SV_StartBug> memcpy ( bss_cfg -> rates + rate_len , rate_ie + 1 , rate_ie -> len ) ; <S2SV_EndBug> return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rate_ie ) { if ( rate_ie -> len > MWIFIEX_SUPPORTED_RATES ) return ; <S2SV_ModStart> ( rate_ie ) { if ( rate_ie -> len > MWIFIEX_SUPPORTED_RATES - rate_len ) return ; <S2SV_ModStart> len ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-444(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7670\n\n```\nCWE-444 static void * listen_loop ( void * x ) { int optval = 1 ; struct pollfd pa [ 100 ] ; struct pollfd * p ; struct _agooErr err = AGOO_ERR_INIT ; struct sockaddr_in client_addr ; int client_sock ; int pcnt = 0 ; socklen_t alen = 0 ; agooCon con ; int i ; uint64_t cnt = 0 ; agooBind b ; for ( b = agoo_server . binds , p = pa ; NULL != b ; b = b -> next , p ++ , pcnt ++ ) { p -> fd = b -> fd ; p -> events = POLLIN ; p -> revents = 0 ; } memset ( & client_addr , 0 , sizeof ( client_addr ) ) ; atomic_fetch_add ( & agoo_server . running , 1 ) ; while ( agoo_server . active ) { if ( 0 > ( i = poll ( pa , pcnt , 200 ) ) ) { if ( EAGAIN == errno ) { continue ; } agoo_log_cat ( & agoo_error_cat , \"Server<S2SV_blank>polling<S2SV_blank>error.<S2SV_blank>%s.\" , strerror ( errno ) ) ; break ; } if ( 0 == i ) { continue ; } for ( b = agoo_server . binds , p = pa ; NULL != b ; b = b -> next , p ++ ) { if ( 0 != ( p -> revents & POLLIN ) ) { if ( 0 > ( client_sock = accept ( p -> fd , ( struct sockaddr * ) & client_addr , & alen ) ) ) { agoo_log_cat ( & agoo_error_cat , \"Server<S2SV_blank>with<S2SV_blank>pid<S2SV_blank>%d<S2SV_blank>accept<S2SV_blank>connection<S2SV_blank>failed.<S2SV_blank>%s.\" , getpid ( ) , strerror ( errno ) ) ; } else if ( NULL == ( con = agoo_con_create ( & err , client_sock , ++ cnt , b ) ) ) { agoo_log_cat ( & agoo_error_cat , \"Server<S2SV_blank>with<S2SV_blank>pid<S2SV_blank>%d<S2SV_blank>accept<S2SV_blank>connection<S2SV_blank>failed.<S2SV_blank>%s.\" , getpid ( ) , err . msg ) ; close ( client_sock ) ; cnt -- ; agoo_err_clear ( & err ) ; } else { int con_cnt ; # ifdef OSX_OS setsockopt ( client_sock , SOL_SOCKET , SO_NOSIGPIPE , & optval , sizeof ( optval ) ) ; # endif # ifdef PLATFORM_LINUX setsockopt ( client_sock , IPPROTO_TCP , TCP_QUICKACK , & optval , sizeof ( optval ) ) ; # endif fcntl ( client_sock , F_SETFL , O_NONBLOCK ) ; setsockopt ( client_sock , SOL_SOCKET , SO_KEEPALIVE , & optval , sizeof ( optval ) ) ; setsockopt ( client_sock , IPPROTO_TCP , TCP_NODELAY , & optval , sizeof ( optval ) ) ; <S2SV_StartBug> agoo_log_cat ( & agoo_con_cat , \"Server<S2SV_blank>with<S2SV_blank>pid<S2SV_blank>%d<S2SV_blank>accepted<S2SV_blank>connection<S2SV_blank>%llu<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>[%d]\" , <S2SV_EndBug> <S2SV_StartBug> getpid ( ) , ( unsigned long long ) cnt , b -> id , con -> sock ) ; <S2SV_EndBug> con_cnt = atomic_fetch_add ( & agoo_server . con_cnt , 1 ) ; if ( agoo_server . loop_max > agoo_server . loop_cnt && agoo_server . loop_cnt * LOOP_UP < con_cnt ) { add_con_loop ( ) ; } agoo_queue_push ( & agoo_server . con_queue , ( void * ) con ) ; } } if ( 0 != ( p -> revents & ( POLLERR | POLLHUP | POLLNVAL ) ) ) { if ( 0 != ( p -> revents & ( POLLHUP | POLLNVAL ) ) ) { agoo_log_cat ( & agoo_error_cat , \"Agoo<S2SV_blank>server<S2SV_blank>with<S2SV_blank>pid<S2SV_blank>%d<S2SV_blank>socket<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>closed.\" , getpid ( ) , b -> id ) ; } else { agoo_log_cat ( & agoo_error_cat , \"Agoo<S2SV_blank>server<S2SV_blank>with<S2SV_blank>pid<S2SV_blank>%d<S2SV_blank>socket<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>error.\" , getpid ( ) , b -> id ) ; } agoo_server . active = false ; } p -> revents = 0 ; } } for ( b = agoo_server . binds ; NULL != b ; b = b -> next ) { agoo_bind_close ( b ) ; } atomic_fetch_sub ( & agoo_server . running , 1 ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & agoo_con_cat , \"Server<S2SV_blank>with<S2SV_blank>pid<S2SV_blank>%d<S2SV_blank>accepted<S2SV_blank>connection<S2SV_blank>%llu<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>[%d]<S2SV_blank>from<S2SV_blank>%s\" <S2SV_ModEnd> , getpid ( <S2SV_ModStart> con -> sock , con -> remote\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 static int copy_cred ( struct svc_cred * target , struct svc_cred * source ) { <S2SV_StartBug> int ret ; <S2SV_EndBug> <S2SV_StartBug> ret = strdup_if_nonnull ( & target -> cr_principal , source -> cr_principal ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ret ) <S2SV_EndBug> return ret ; ret = strdup_if_nonnull ( & target -> cr_raw_principal , source -> cr_raw_principal ) ; if ( ret ) return ret ; target -> cr_flavor = source -> cr_flavor ; target -> cr_uid = source -> cr_uid ; target -> cr_gid = source -> cr_gid ; target -> cr_group_info = source -> cr_group_info ; get_group_info ( target -> cr_group_info ) ; target -> cr_gss_mech = source -> cr_gss_mech ; if ( source -> cr_gss_mech ) gss_mech_get ( source -> cr_gss_mech ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> source ) { <S2SV_ModEnd> target -> cr_principal <S2SV_ModStart> target -> cr_principal = kstrdup ( <S2SV_ModEnd> source -> cr_principal <S2SV_ModStart> source -> cr_principal , GFP_KERNEL ) ; target -> cr_raw_principal = kstrdup ( source -> cr_raw_principal , GFP_KERNEL <S2SV_ModStart> ; if ( ( source -> cr_principal && ! target -> cr_principal ) || ( source -> cr_raw_principal && ! target -> cr_raw_principal ) ) return - ENOMEM <S2SV_ModEnd> ; target ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static void pci_emul_capwrite ( struct pci_vdev * dev , int offset , int bytes , uint32_t val ) { int capid ; uint8_t capoff , nextoff ; if ( ( offset & ( bytes - 1 ) ) != 0 ) return ; capoff = CAP_START_OFFSET ; while ( 1 ) { nextoff = pci_get_cfgdata8 ( dev , capoff + 1 ) ; if ( nextoff == 0 ) break ; if ( offset >= capoff && offset < nextoff ) break ; capoff = nextoff ; } <S2SV_StartBug> assert ( offset >= capoff ) ; <S2SV_EndBug> if ( offset == capoff || offset == capoff + 1 ) { if ( offset == capoff && bytes == 4 ) { bytes = 2 ; offset += 2 ; val >>= 16 ; } else return ; } capid = pci_get_cfgdata8 ( dev , capoff ) ; switch ( capid ) { case PCIY_MSI : msicap_cfgwrite ( dev , capoff , offset , bytes , val ) ; break ; case PCIY_MSIX : msixcap_cfgwrite ( dev , capoff , offset , bytes , val ) ; break ; case PCIY_EXPRESS : pciecap_cfgwrite ( dev , capoff , offset , bytes , val ) ; break ; default : CFGWRITE ( dev , offset , val , bytes ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nextoff ; } <S2SV_ModEnd> if ( offset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static double calculate_modified_err ( const VP9_COMP * cpi , <S2SV_StartBug> const FIRSTPASS_STATS * this_frame ) { <S2SV_EndBug> <S2SV_StartBug> const struct twopass_rc * twopass = & cpi -> twopass ; <S2SV_EndBug> const SVC * const svc = & cpi -> svc ; const FIRSTPASS_STATS * stats ; double av_err ; double modified_error ; if ( svc -> number_spatial_layers > 1 && svc -> number_temporal_layers == 1 ) { twopass = & svc -> layer_context [ svc -> spatial_layer_id ] . twopass ; } stats = & twopass -> total_stats ; <S2SV_StartBug> av_err = stats -> ssim_weighted_pred_err / stats -> count ; <S2SV_EndBug> <S2SV_StartBug> modified_error = av_err * pow ( this_frame -> ssim_weighted_pred_err / <S2SV_EndBug> DOUBLE_DIVIDE_CHECK ( av_err ) , <S2SV_StartBug> cpi -> oxcf . two_pass_vbrbias / 100.0 ) ; <S2SV_EndBug> return fclamp ( modified_error , twopass -> modified_error_min , twopass -> modified_error_max ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi , const TWO_PASS * twopass , const VP9EncoderConfig * oxcf , const <S2SV_ModStart> ) { const FIRSTPASS_STATS * const <S2SV_ModEnd> stats = & <S2SV_ModStart> -> total_stats ; const double av_weight <S2SV_ModEnd> = stats -> <S2SV_ModStart> = stats -> weight <S2SV_ModEnd> / stats -> <S2SV_ModStart> -> count ; const double av_err = ( stats -> coded_error * av_weight ) / stats -> count ; double <S2SV_ModStart> ( this_frame -> coded_error * this_frame -> weight <S2SV_ModEnd> / DOUBLE_DIVIDE_CHECK ( <S2SV_ModStart> av_err ) , oxcf -> <S2SV_ModEnd> two_pass_vbrbias / 100.0 <S2SV_ModStart> two_pass_vbrbias / 100.0 ) ; modified_error *= pow ( calculate_active_area ( cpi , this_frame ) , ACT_AREA_CORRECTION\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static bool cgroupfs_mount_cgroup ( void * hdata , const char * root , int type ) { size_t bufsz = strlen ( root ) + sizeof ( \"/sys/fs/cgroup\" ) ; char * path = NULL ; char * * parts = NULL ; char * dirname = NULL ; char * abs_path = NULL ; char * abs_path2 = NULL ; struct cgfs_data * cgfs_d ; struct cgroup_process_info * info , * base_info ; int r , saved_errno = 0 ; cgfs_d = hdata ; if ( ! cgfs_d ) return false ; base_info = cgfs_d -> info ; if ( type == LXC_AUTO_CGROUP_FULL_NOSPEC ) type = LXC_AUTO_CGROUP_FULL_MIXED ; else if ( type == LXC_AUTO_CGROUP_NOSPEC ) type = LXC_AUTO_CGROUP_MIXED ; if ( type < LXC_AUTO_CGROUP_RO || type > LXC_AUTO_CGROUP_FULL_MIXED ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>mount<S2SV_blank>cgroups<S2SV_blank>into<S2SV_blank>container:<S2SV_blank>invalid<S2SV_blank>type<S2SV_blank>specified<S2SV_blank>internally\" ) ; errno = EINVAL ; return false ; } path = calloc ( 1 , bufsz ) ; if ( ! path ) return false ; snprintf ( path , bufsz , \"%s/sys/fs/cgroup\" , root ) ; <S2SV_StartBug> r = mount ( \"cgroup_root\" , path , \"tmpfs\" , MS_NOSUID | MS_NODEV | MS_NOEXEC | MS_RELATIME , \"size=10240k,mode=755\" ) ; <S2SV_EndBug> if ( r < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>mount<S2SV_blank>tmpfs<S2SV_blank>to<S2SV_blank>/sys/fs/cgroup<S2SV_blank>in<S2SV_blank>the<S2SV_blank>container\" ) ; return false ; } for ( info = base_info ; info ; info = info -> next ) { size_t subsystem_count , i ; struct cgroup_mount_point * mp = info -> designated_mount_point ; if ( ! mp ) mp = lxc_cgroup_find_mount_point ( info -> hierarchy , info -> cgroup_path , true ) ; if ( ! mp ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>find<S2SV_blank>original<S2SV_blank>mount<S2SV_blank>point<S2SV_blank>for<S2SV_blank>cgroup<S2SV_blank>hierarchy<S2SV_blank>while<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>cgroup<S2SV_blank>filesystem\" ) ; goto out_error ; } subsystem_count = lxc_array_len ( ( void * * ) info -> hierarchy -> subsystems ) ; parts = calloc ( subsystem_count + 1 , sizeof ( char * ) ) ; if ( ! parts ) goto out_error ; for ( i = 0 ; i < subsystem_count ; i ++ ) { if ( ! strncmp ( info -> hierarchy -> subsystems [ i ] , \"name=\" , 5 ) ) parts [ i ] = info -> hierarchy -> subsystems [ i ] + 5 ; else parts [ i ] = info -> hierarchy -> subsystems [ i ] ; } dirname = lxc_string_join ( \",\" , ( const char * * ) parts , false ) ; if ( ! dirname ) goto out_error ; abs_path = lxc_append_paths ( path , dirname ) ; if ( ! abs_path ) goto out_error ; r = mkdir_p ( abs_path , 0755 ) ; if ( r < 0 && errno != EEXIST ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>cgroup<S2SV_blank>subsystem<S2SV_blank>directory<S2SV_blank>/sys/fs/cgroup/%s\" , dirname ) ; goto out_error ; } abs_path2 = lxc_append_paths ( abs_path , info -> cgroup_path ) ; if ( ! abs_path2 ) goto out_error ; if ( type == LXC_AUTO_CGROUP_FULL_RO || type == LXC_AUTO_CGROUP_FULL_RW || type == LXC_AUTO_CGROUP_FULL_MIXED ) { if ( strcmp ( mp -> mount_prefix , \"/\" ) != 0 ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>automatically<S2SV_blank>mount<S2SV_blank>cgroup-full<S2SV_blank>to<S2SV_blank>/sys/fs/cgroup/%s:<S2SV_blank>host<S2SV_blank>has<S2SV_blank>no<S2SV_blank>mount<S2SV_blank>point<S2SV_blank>for<S2SV_blank>this<S2SV_blank>cgroup<S2SV_blank>filesystem<S2SV_blank>that<S2SV_blank>has<S2SV_blank>access<S2SV_blank>to<S2SV_blank>the<S2SV_blank>root<S2SV_blank>cgroup\" , dirname ) ; goto out_error ; } r = mount ( mp -> mount_point , abs_path , \"none\" , MS_BIND , 0 ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>bind-mounting<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s\" , mp -> mount_point , abs_path ) ; goto out_error ; } if ( type == LXC_AUTO_CGROUP_FULL_RO || type == LXC_AUTO_CGROUP_FULL_MIXED ) { r = mount ( NULL , abs_path , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>re-mounting<S2SV_blank>%s<S2SV_blank>readonly\" , abs_path ) ; goto out_error ; } } if ( type == LXC_AUTO_CGROUP_FULL_MIXED ) { r = mount ( abs_path2 , abs_path2 , NULL , MS_BIND , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>bind-mounting<S2SV_blank>%s<S2SV_blank>onto<S2SV_blank>itself\" , abs_path2 ) ; goto out_error ; } r = mount ( NULL , abs_path2 , NULL , MS_REMOUNT | MS_BIND , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>re-mounting<S2SV_blank>%s<S2SV_blank>readwrite\" , abs_path2 ) ; goto out_error ; } } } else { r = mkdir_p ( abs_path2 , 0755 ) ; if ( r < 0 && errno != EEXIST ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>cgroup<S2SV_blank>directory<S2SV_blank>/sys/fs/cgroup/%s%s\" , dirname , info -> cgroup_path ) ; goto out_error ; } if ( type == LXC_AUTO_CGROUP_MIXED || type == LXC_AUTO_CGROUP_RO ) { r = mount ( abs_path , abs_path , NULL , MS_BIND , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>bind-mounting<S2SV_blank>%s<S2SV_blank>onto<S2SV_blank>itself\" , abs_path ) ; goto out_error ; } r = mount ( NULL , abs_path , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>re-mounting<S2SV_blank>%s<S2SV_blank>readonly\" , abs_path ) ; goto out_error ; } } free ( abs_path ) ; abs_path = NULL ; abs_path = cgroup_to_absolute_path ( mp , info -> cgroup_path , NULL ) ; if ( ! abs_path ) goto out_error ; r = mount ( abs_path , abs_path2 , \"none\" , MS_BIND , 0 ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>bind-mounting<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s\" , abs_path , abs_path2 ) ; goto out_error ; } if ( type == LXC_AUTO_CGROUP_RO ) { r = mount ( NULL , abs_path2 , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>re-mounting<S2SV_blank>%s<S2SV_blank>readonly\" , abs_path2 ) ; goto out_error ; } } } free ( abs_path ) ; free ( abs_path2 ) ; abs_path = NULL ; abs_path2 = NULL ; if ( subsystem_count > 1 ) { for ( i = 0 ; i < subsystem_count ; i ++ ) { abs_path = lxc_append_paths ( path , parts [ i ] ) ; if ( ! abs_path ) goto out_error ; r = symlink ( dirname , abs_path ) ; if ( r < 0 ) WARN ( \"could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>symlink<S2SV_blank>%s<S2SV_blank>-><S2SV_blank>%s<S2SV_blank>in<S2SV_blank>/sys/fs/cgroup<S2SV_blank>of<S2SV_blank>container\" , parts [ i ] , dirname ) ; free ( abs_path ) ; abs_path = NULL ; } } free ( dirname ) ; free ( parts ) ; dirname = NULL ; parts = NULL ; } free ( path ) ; return true ; out_error : saved_errno = errno ; free ( path ) ; free ( dirname ) ; free ( parts ) ; free ( abs_path ) ; free ( abs_path2 ) ; errno = saved_errno ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; r = safe_mount <S2SV_ModEnd> ( \"cgroup_root\" , <S2SV_ModStart> MS_RELATIME , \"size=10240k,mode=755\" , root\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_split_extent_at ( handle_t * handle , struct inode * inode , struct ext4_ext_path * path , ext4_lblk_t split , int split_flag , int flags ) { ext4_fsblk_t newblock ; ext4_lblk_t ee_block ; struct ext4_extent * ex , newex , orig_ex ; struct ext4_extent * ex2 = NULL ; unsigned int ee_len , depth ; <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> ext_debug ( \"ext4_split_extents_at:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical\" \"block<S2SV_blank>%llu\\\\n\" , inode -> i_ino , ( unsigned long long ) split ) ; ext4_ext_show_leaf ( inode , path ) ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; newblock = split - ee_block + ext4_ext_pblock ( ex ) ; BUG_ON ( split < ee_block || split >= ( ee_block + ee_len ) ) ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto out ; if ( split == ee_block ) { if ( split_flag & EXT4_EXT_MARK_UNINIT2 ) ext4_ext_mark_uninitialized ( ex ) ; else ext4_ext_mark_initialized ( ex ) ; if ( ! ( flags & EXT4_GET_BLOCKS_PRE_IO ) ) ext4_ext_try_to_merge ( handle , inode , path , ex ) ; err = ext4_ext_dirty ( handle , inode , path + path -> p_depth ) ; goto out ; } memcpy ( & orig_ex , ex , sizeof ( orig_ex ) ) ; ex -> ee_len = cpu_to_le16 ( split - ee_block ) ; if ( split_flag & EXT4_EXT_MARK_UNINIT1 ) ext4_ext_mark_uninitialized ( ex ) ; err = ext4_ext_dirty ( handle , inode , path + depth ) ; if ( err ) goto fix_extent_len ; ex2 = & newex ; ex2 -> ee_block = cpu_to_le32 ( split ) ; ex2 -> ee_len = cpu_to_le16 ( ee_len - ( split - ee_block ) ) ; ext4_ext_store_pblock ( ex2 , newblock ) ; if ( split_flag & EXT4_EXT_MARK_UNINIT2 ) ext4_ext_mark_uninitialized ( ex2 ) ; err = ext4_ext_insert_extent ( handle , inode , path , & newex , flags ) ; if ( err == - ENOSPC && ( EXT4_EXT_MAY_ZEROOUT & split_flag ) ) { <S2SV_StartBug> err = ext4_ext_zeroout ( inode , & orig_ex ) ; <S2SV_EndBug> if ( err ) goto fix_extent_len ; ex -> ee_len = cpu_to_le16 ( ee_len ) ; ext4_ext_try_to_merge ( handle , inode , path , ex ) ; err = ext4_ext_dirty ( handle , inode , path + path -> p_depth ) ; goto out ; } else if ( err ) goto fix_extent_len ; out : ext4_ext_show_leaf ( inode , path ) ; return err ; fix_extent_len : ex -> ee_len = orig_ex . ee_len ; ext4_ext_dirty ( handle , inode , path + depth ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err = 0 ; BUG_ON ( ( split_flag & ( EXT4_EXT_DATA_VALID1 | EXT4_EXT_DATA_VALID2 ) ) == ( EXT4_EXT_DATA_VALID1 | EXT4_EXT_DATA_VALID2 ) ) <S2SV_ModStart> ) ) { if ( split_flag & ( EXT4_EXT_DATA_VALID1 | EXT4_EXT_DATA_VALID2 ) ) { if ( split_flag & EXT4_EXT_DATA_VALID1 ) err = ext4_ext_zeroout ( inode , ex2 ) ; else err = ext4_ext_zeroout ( inode , ex ) ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_temporal_filter_apply_c ( uint8_t * frame1 , unsigned int stride , uint8_t * frame2 , <S2SV_StartBug> unsigned int block_size , <S2SV_EndBug> int strength , int filter_weight , unsigned int * accumulator , uint16_t * count ) { unsigned int i , j , k ; int modifier ; int byte = 0 ; <S2SV_StartBug> for ( i = 0 , k = 0 ; i < block_size ; i ++ ) { <S2SV_EndBug> <S2SV_StartBug> for ( j = 0 ; j < block_size ; j ++ , k ++ ) { <S2SV_EndBug> int src_byte = frame1 [ byte ] ; int pixel_value = * frame2 ++ ; modifier = src_byte - pixel_value ; modifier *= modifier ; modifier *= 3 ; <S2SV_StartBug> modifier += 1 << ( strength - 1 ) ; <S2SV_EndBug> modifier >>= strength ; if ( modifier > 16 ) modifier = 16 ; modifier = 16 - modifier ; modifier *= filter_weight ; count [ k ] += modifier ; accumulator [ k ] += modifier * pixel_value ; byte ++ ; } <S2SV_StartBug> byte += stride - block_size ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , unsigned int block_width , unsigned int block_height <S2SV_ModEnd> , int strength <S2SV_ModStart> = 0 ; const int rounding = strength > 0 ? 1 << ( strength - 1 ) : 0 ; <S2SV_ModStart> ; i < block_height <S2SV_ModEnd> ; i ++ <S2SV_ModStart> ; j < block_width <S2SV_ModEnd> ; j ++ <S2SV_ModStart> ; modifier += rounding <S2SV_ModEnd> ; modifier >>= <S2SV_ModStart> += stride - block_width <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static void pci_cfgrw ( struct vmctx * ctx , int vcpu , int in , int bus , int slot , int func , int coff , int bytes , uint32_t * eax ) { struct businfo * bi ; struct slotinfo * si ; struct pci_vdev * dev ; struct pci_vdev_ops * ops ; int idx , needcfg ; uint64_t addr , bar , mask ; bool decode , ignore_reg_unreg = false ; bi = pci_businfo [ bus ] ; if ( bi != NULL ) { si = & bi -> slotinfo [ slot ] ; dev = si -> si_funcs [ func ] . fi_devi ; } else dev = NULL ; if ( dev == NULL || ( bytes != 1 && bytes != 2 && bytes != 4 ) || ( coff & ( bytes - 1 ) ) != 0 ) { if ( in ) * eax = 0xffffffff ; return ; } ops = dev -> dev_ops ; if ( strcmp ( \"passthru\" , ops -> class_name ) ) { if ( coff >= PCI_REGMAX + 1 ) { if ( in ) { * eax = 0xffffffff ; if ( coff <= PCI_REGMAX + 4 ) * eax = 0x00000000 ; } return ; } } if ( in ) { if ( ops -> vdev_cfgread != NULL ) { needcfg = ops -> vdev_cfgread ( ctx , vcpu , dev , coff , bytes , eax ) ; } else { needcfg = 1 ; } if ( needcfg ) * eax = CFGREAD ( dev , coff , bytes ) ; pci_emul_hdrtype_fixup ( bus , slot , coff , bytes , eax ) ; } else { if ( ops -> vdev_cfgwrite != NULL && ( * ops -> vdev_cfgwrite ) ( ctx , vcpu , dev , coff , bytes , * eax ) == 0 ) return ; if ( coff >= PCIR_BAR ( 0 ) && coff < PCIR_BAR ( PCI_BARMAX + 1 ) ) { if ( bytes != 4 || ( coff & 0x3 ) != 0 ) return ; idx = ( coff - PCIR_BAR ( 0 ) ) / 4 ; mask = ~ ( dev -> bar [ idx ] . size - 1 ) ; if ( dev -> bar [ idx ] . type == PCIBAR_IO ) decode = porten ( dev ) ; else decode = memen ( dev ) ; if ( decode ) { if ( ! dev -> bar [ idx ] . sizing && ( * eax == ~ 0U ) ) { dev -> bar [ idx ] . sizing = true ; ignore_reg_unreg = true ; } else if ( dev -> bar [ idx ] . sizing && ( * eax != ~ 0U ) ) { dev -> bar [ idx ] . sizing = false ; ignore_reg_unreg = true ; } } switch ( dev -> bar [ idx ] . type ) { case PCIBAR_NONE : dev -> bar [ idx ] . addr = bar = 0 ; break ; case PCIBAR_IO : addr = * eax & mask ; addr &= 0xffff ; bar = addr | PCIM_BAR_IO_SPACE ; if ( addr != dev -> bar [ idx ] . addr ) { update_bar_address ( ctx , dev , addr , idx , PCIBAR_IO , ignore_reg_unreg ) ; } break ; case PCIBAR_MEM32 : addr = bar = * eax & mask ; bar |= PCIM_BAR_MEM_SPACE | PCIM_BAR_MEM_32 ; if ( addr != dev -> bar [ idx ] . addr ) { update_bar_address ( ctx , dev , addr , idx , PCIBAR_MEM32 , ignore_reg_unreg ) ; } break ; case PCIBAR_MEM64 : addr = bar = * eax & mask ; bar |= PCIM_BAR_MEM_SPACE | PCIM_BAR_MEM_64 | PCIM_BAR_MEM_PREFETCH ; if ( addr != ( uint32_t ) dev -> bar [ idx ] . addr ) { update_bar_address ( ctx , dev , addr , idx , PCIBAR_MEM64 , ignore_reg_unreg ) ; } break ; case PCIBAR_MEMHI64 : <S2SV_StartBug> assert ( idx >= 1 ) ; <S2SV_EndBug> mask = ~ ( dev -> bar [ idx - 1 ] . size - 1 ) ; addr = ( ( uint64_t ) * eax << 32 ) & mask ; bar = addr >> 32 ; if ( bar != dev -> bar [ idx - 1 ] . addr >> 32 ) { update_bar_address ( ctx , dev , addr , idx - 1 , PCIBAR_MEMHI64 , ignore_reg_unreg ) ; } break ; default : <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> } pci_set_cfgdata32 ( dev , coff , bar ) ; } else if ( coff == PCIR_BIOS ) { } else if ( pci_emul_iscap ( dev , coff ) ) { pci_emul_capwrite ( dev , coff , bytes , * eax ) ; } else if ( coff >= PCIR_COMMAND && coff < PCIR_REVID ) { pci_emul_cmdsts_write ( dev , coff , * eax , bytes ) ; } else { CFGWRITE ( dev , coff , * eax , bytes ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case PCIBAR_MEMHI64 : <S2SV_ModEnd> mask = ~ <S2SV_ModStart> ; default : pr_err ( \"%s:<S2SV_blank>invalid<S2SV_blank>bar<S2SV_blank>type<S2SV_blank>%d\\\\n\" , __func__ , dev -> bar [ idx ] . type ) ; return <S2SV_ModEnd> ; } pci_set_cfgdata32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3900\n\n```\nCWE-264 static int svc_can_register ( const uint16_t * name , size_t name_len , pid_t spid , uid_t uid ) { const char * perm = \"add\" ; <S2SV_StartBug> return check_mac_perms_from_lookup ( spid , uid , perm , str8 ( name , name_len ) ) ? 1 : 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = \"add\" ; if ( uid >= AID_APP ) { return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10165\n\n```\nCWE-125 static void * Type_MLU_Read ( struct _cms_typehandler_struct * self , cmsIOHANDLER * io , cmsUInt32Number * nItems , cmsUInt32Number SizeOfTag ) { cmsMLU * mlu ; cmsUInt32Number Count , RecLen , NumOfWchar ; cmsUInt32Number SizeOfHeader ; cmsUInt32Number Len , Offset ; cmsUInt32Number i ; wchar_t * Block ; cmsUInt32Number BeginOfThisString , EndOfThisString , LargestPosition ; * nItems = 0 ; if ( ! _cmsReadUInt32Number ( io , & Count ) ) return NULL ; if ( ! _cmsReadUInt32Number ( io , & RecLen ) ) return NULL ; if ( RecLen != 12 ) { cmsSignalError ( self -> ContextID , cmsERROR_UNKNOWN_EXTENSION , \"multiLocalizedUnicodeType<S2SV_blank>of<S2SV_blank>len<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported.\" ) ; return NULL ; } mlu = cmsMLUalloc ( self -> ContextID , Count ) ; if ( mlu == NULL ) return NULL ; mlu -> UsedEntries = Count ; SizeOfHeader = 12 * Count + sizeof ( _cmsTagBase ) ; LargestPosition = 0 ; for ( i = 0 ; i < Count ; i ++ ) { if ( ! _cmsReadUInt16Number ( io , & mlu -> Entries [ i ] . Language ) ) goto Error ; if ( ! _cmsReadUInt16Number ( io , & mlu -> Entries [ i ] . Country ) ) goto Error ; if ( ! _cmsReadUInt32Number ( io , & Len ) ) goto Error ; if ( ! _cmsReadUInt32Number ( io , & Offset ) ) goto Error ; <S2SV_StartBug> if ( Offset < ( SizeOfHeader + 8 ) ) goto Error ; <S2SV_EndBug> BeginOfThisString = Offset - SizeOfHeader - 8 ; mlu -> Entries [ i ] . Len = ( Len * sizeof ( wchar_t ) ) / sizeof ( cmsUInt16Number ) ; mlu -> Entries [ i ] . StrW = ( BeginOfThisString * sizeof ( wchar_t ) ) / sizeof ( cmsUInt16Number ) ; EndOfThisString = BeginOfThisString + Len ; if ( EndOfThisString > LargestPosition ) LargestPosition = EndOfThisString ; } SizeOfTag = ( LargestPosition * sizeof ( wchar_t ) ) / sizeof ( cmsUInt16Number ) ; if ( SizeOfTag == 0 ) { Block = NULL ; NumOfWchar = 0 ; } else { Block = ( wchar_t * ) _cmsMalloc ( self -> ContextID , SizeOfTag ) ; if ( Block == NULL ) goto Error ; NumOfWchar = SizeOfTag / sizeof ( wchar_t ) ; if ( ! _cmsReadWCharArray ( io , NumOfWchar , Block ) ) goto Error ; } mlu -> MemPool = Block ; mlu -> PoolSize = SizeOfTag ; mlu -> PoolUsed = SizeOfTag ; * nItems = 1 ; return ( void * ) mlu ; Error : if ( mlu ) cmsMLUfree ( mlu ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 8 ) ) goto Error ; if ( ( Offset + Len ) > SizeOfTag + 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 <S2SV_StartBug> void ext4_xattr_destroy_cache ( struct mb_cache * cache ) <S2SV_EndBug> { if ( cache ) <S2SV_StartBug> mb_cache_destroy ( cache ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext4_xattr_destroy_cache ( struct mb2_cache <S2SV_ModEnd> * cache ) <S2SV_ModStart> ( cache ) mb2_cache_destroy <S2SV_ModEnd> ( cache )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15121\n\n```\nCWE-78 bool all_tests ( ) { mu_run_test ( test_r_str_newf ) ; mu_run_test ( test_r_str_replace_char_once ) ; mu_run_test ( test_r_str_replace_char ) ; mu_run_test ( test_r_str_replace ) ; mu_run_test ( test_r_str_bits64 ) ; mu_run_test ( test_r_str_rwx ) ; mu_run_test ( test_r_str_rwx_i ) ; mu_run_test ( test_r_str_bool ) ; mu_run_test ( test_r_str_trim ) ; mu_run_test ( test_r_str_case ) ; mu_run_test ( test_r_str_split ) ; mu_run_test ( test_r_str_tokenize ) ; mu_run_test ( test_r_str_char_count ) ; mu_run_test ( test_r_str_word_count ) ; mu_run_test ( test_r_str_ichr ) ; mu_run_test ( test_r_str_lchr ) ; mu_run_test ( test_r_sub_str_lchr ) ; mu_run_test ( test_r_sub_str_rchr ) ; mu_run_test ( test_r_str_rchr ) ; mu_run_test ( test_r_str_ansi_len ) ; mu_run_test ( test_r_str_len_utf8_ansi ) ; mu_run_test ( test_r_str_utf8_charsize ) ; mu_run_test ( test_r_str_utf8_charsize_prev ) ; mu_run_test ( test_r_str_sanitize_sdb_key ) ; <S2SV_StartBug> mu_run_test ( test_r_str_unescape ) ; <S2SV_EndBug> mu_run_test ( test_r_str_constpool ) ; mu_run_test ( test_r_str_format_msvc_argv ) ; mu_run_test ( test_r_str_str_xy ) ; return tests_passed != tests_run ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; mu_run_test ( test_r_str_escape_sh ) ; mu_run_test (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static int hugetlbfs_fill_super ( struct super_block * sb , void * data , int silent ) { struct inode * inode ; struct dentry * root ; int ret ; struct hugetlbfs_config config ; struct hugetlbfs_sb_info * sbinfo ; save_mount_options ( sb , data ) ; config . nr_blocks = - 1 ; config . nr_inodes = - 1 ; config . uid = current_fsuid ( ) ; config . gid = current_fsgid ( ) ; config . mode = 0755 ; config . hstate = & default_hstate ; ret = hugetlbfs_parse_options ( data , & config ) ; if ( ret ) return ret ; sbinfo = kmalloc ( sizeof ( struct hugetlbfs_sb_info ) , GFP_KERNEL ) ; if ( ! sbinfo ) return - ENOMEM ; sb -> s_fs_info = sbinfo ; sbinfo -> hstate = config . hstate ; spin_lock_init ( & sbinfo -> stat_lock ) ; <S2SV_StartBug> sbinfo -> max_blocks = config . nr_blocks ; <S2SV_EndBug> <S2SV_StartBug> sbinfo -> free_blocks = config . nr_blocks ; <S2SV_EndBug> sbinfo -> max_inodes = config . nr_inodes ; sbinfo -> free_inodes = config . nr_inodes ; sb -> s_maxbytes = MAX_LFS_FILESIZE ; sb -> s_blocksize = huge_page_size ( config . hstate ) ; sb -> s_blocksize_bits = huge_page_shift ( config . hstate ) ; sb -> s_magic = HUGETLBFS_MAGIC ; sb -> s_op = & hugetlbfs_ops ; sb -> s_time_gran = 1 ; inode = hugetlbfs_get_root ( sb , & config ) ; <S2SV_StartBug> if ( ! inode ) <S2SV_EndBug> goto out_free ; <S2SV_StartBug> root = d_alloc_root ( inode ) ; <S2SV_EndBug> if ( ! root ) { iput ( inode ) ; goto out_free ; } sb -> s_root = root ; return 0 ; out_free : <S2SV_StartBug> kfree ( sbinfo ) ; <S2SV_EndBug> return - ENOMEM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sbinfo -> max_inodes = config . nr_inodes ; sbinfo -> free_inodes = config . nr_inodes ; sbinfo -> spool = NULL ; if ( <S2SV_ModEnd> config . nr_blocks <S2SV_ModStart> config . nr_blocks != - 1 ) { sbinfo -> spool = hugepage_new_subpool ( <S2SV_ModEnd> config . nr_blocks <S2SV_ModStart> config . nr_blocks <S2SV_ModEnd> ) ; if <S2SV_ModStart> if ( ! sbinfo -> spool <S2SV_ModEnd> ) goto out_free <S2SV_ModStart> goto out_free ; } sb -> s_maxbytes = MAX_LFS_FILESIZE ; sb -> s_blocksize = huge_page_size ( config . hstate ) ; sb -> s_blocksize_bits = huge_page_shift ( config . hstate ) ; sb -> s_magic = HUGETLBFS_MAGIC ; sb -> s_op = & hugetlbfs_ops ; sb -> s_time_gran = 1 ; inode = hugetlbfs_get_root ( sb , & config ) ; if ( ! inode ) goto out_free ; <S2SV_ModStart> ; out_free : if ( sbinfo -> spool ) kfree ( sbinfo -> spool ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2008-7316\n\n```\nCWE-20 static void __iov_iter_advance_iov ( struct iov_iter * i , size_t bytes ) { if ( likely ( i -> nr_segs == 1 ) ) { i -> iov_offset += bytes ; } else { const struct iovec * iov = i -> iov ; size_t base = i -> iov_offset ; <S2SV_StartBug> while ( bytes ) { <S2SV_EndBug> int copy = min ( bytes , iov -> iov_len - base ) ; bytes -= copy ; base += copy ; if ( iov -> iov_len == base ) { iov ++ ; base = 0 ; } } i -> iov = iov ; i -> iov_offset = base ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( bytes || ! iov -> iov_len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9578\n\n```\nCWE-119 static int init_device ( u2fh_devs * devs , struct u2fdevice * dev ) { unsigned char resp [ 1024 ] ; unsigned char nonce [ 8 ] ; if ( obtain_nonce ( nonce ) != 0 ) { return U2FH_TRANSPORT_ERROR ; } size_t resplen = sizeof ( resp ) ; dev -> cid = CID_BROADCAST ; if ( u2fh_sendrecv ( devs , dev -> id , U2FHID_INIT , nonce , sizeof ( nonce ) , resp , & resplen ) == U2FH_OK ) { <S2SV_StartBug> U2FHID_INIT_RESP initresp ; <S2SV_EndBug> <S2SV_StartBug> if ( resplen > sizeof ( initresp ) ) <S2SV_EndBug> { return U2FH_MEMORY_ERROR ; } memcpy ( & initresp , resp , resplen ) ; <S2SV_StartBug> dev -> cid = initresp . cid ; <S2SV_EndBug> <S2SV_StartBug> dev -> versionInterface = initresp . versionInterface ; <S2SV_EndBug> <S2SV_StartBug> dev -> versionMajor = initresp . versionMajor ; <S2SV_EndBug> <S2SV_StartBug> dev -> versionMinor = initresp . versionMinor ; <S2SV_EndBug> <S2SV_StartBug> dev -> capFlags = initresp . capFlags ; <S2SV_EndBug> } else { return U2FH_TRANSPORT_ERROR ; } return U2FH_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> U2FH_OK ) { int offs = sizeof ( nonce ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> if ( resplen < 17 ) { return U2FH_SIZE_ERROR ; } if ( memcmp ( nonce , resp , sizeof ( nonce ) ) != 0 ) { return U2FH_TRANSPORT_ERROR ; } <S2SV_ModEnd> dev -> cid <S2SV_ModStart> -> cid = resp [ offs ] << 24 | resp [ offs + 1 ] << 16 | resp [ offs + 2 ] << 8 | resp [ offs + 3 ] ; offs += 4 <S2SV_ModEnd> ; dev -> <S2SV_ModStart> -> versionInterface = resp [ offs ++ ] <S2SV_ModEnd> ; dev -> <S2SV_ModStart> -> versionMajor = resp [ offs ++ ] <S2SV_ModEnd> ; dev -> <S2SV_ModStart> -> versionMinor = resp [ offs ++ ] ; dev -> versionBuild = resp [ offs ++ ] <S2SV_ModEnd> ; dev -> <S2SV_ModStart> -> capFlags = resp [ offs ++ ] <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-89(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7262\n\n```\nCWE-89 int msPostGISLayerSetTimeFilter ( layerObj * lp , const char * timestring , const char * timefield ) { char * * atimes , * * aranges = NULL ; int numtimes = 0 , i = 0 , numranges = 0 ; size_t buffer_size = 512 ; char buffer [ 512 ] , bufferTmp [ 512 ] ; buffer [ 0 ] = '\\\\0' ; bufferTmp [ 0 ] = '\\\\0' ; if ( ! lp || ! timestring || ! timefield ) <S2SV_StartBug> return MS_FALSE ; <S2SV_EndBug> if ( strstr ( timestring , \",\" ) == NULL && strstr ( timestring , \"/\" ) == NULL ) { createPostgresTimeCompareSimple ( timefield , timestring , buffer , buffer_size ) ; } else { atimes = msStringSplit ( timestring , ',' , & numtimes ) ; if ( atimes == NULL || numtimes < 1 ) return MS_FALSE ; strlcat ( buffer , \"(\" , buffer_size ) ; for ( i = 0 ; i < numtimes ; i ++ ) { if ( i != 0 ) { strlcat ( buffer , \"<S2SV_blank>OR<S2SV_blank>\" , buffer_size ) ; } strlcat ( buffer , \"(\" , buffer_size ) ; aranges = msStringSplit ( atimes [ i ] , '/' , & numranges ) ; if ( ! aranges ) return MS_FALSE ; if ( numranges == 1 ) { createPostgresTimeCompareSimple ( timefield , atimes [ i ] , bufferTmp , buffer_size ) ; strlcat ( buffer , bufferTmp , buffer_size ) ; } else if ( numranges == 2 ) { createPostgresTimeCompareRange ( timefield , aranges [ 0 ] , aranges [ 1 ] , bufferTmp , buffer_size ) ; strlcat ( buffer , bufferTmp , buffer_size ) ; } else { return MS_FALSE ; } msFreeCharArray ( aranges , numranges ) ; strlcat ( buffer , \")\" , buffer_size ) ; } strlcat ( buffer , \")\" , buffer_size ) ; msFreeCharArray ( atimes , numtimes ) ; } if ( ! * buffer ) { return MS_FALSE ; } if ( lp -> filteritem ) free ( lp -> filteritem ) ; lp -> filteritem = msStrdup ( timefield ) ; if ( & lp -> filter ) { if ( lp -> filter . type == MS_EXPRESSION ) { snprintf ( bufferTmp , buffer_size , \"(%s)<S2SV_blank>and<S2SV_blank>%s\" , lp -> filter . string , buffer ) ; loadExpressionString ( & lp -> filter , bufferTmp ) ; } else { freeExpression ( & lp -> filter ) ; loadExpressionString ( & lp -> filter , buffer ) ; } } return MS_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return MS_FALSE ; if ( strchr ( timestring , '\\\\'' ) || strchr ( timestring , '\\\\\\\\' ) ) { msSetError ( MS_MISCERR , \"Invalid<S2SV_blank>time<S2SV_blank>filter.\" , \"msPostGISLayerSetTimeFilter()\" ) ; return MS_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 ssize_t socket_read ( const socket_t * socket , void * buf , size_t count ) { assert ( socket != NULL ) ; assert ( buf != NULL ) ; <S2SV_StartBug> return recv ( socket -> fd , buf , count , MSG_DONTWAIT ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return TEMP_FAILURE_RETRY ( <S2SV_ModStart> , MSG_DONTWAIT ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4300\n\n```\nCWE-264 static __inline__ int scm_check_creds ( struct ucred * creds ) { const struct cred * cred = current_cred ( ) ; kuid_t uid = make_kuid ( cred -> user_ns , creds -> uid ) ; kgid_t gid = make_kgid ( cred -> user_ns , creds -> gid ) ; if ( ! uid_valid ( uid ) || ! gid_valid ( gid ) ) return - EINVAL ; if ( ( creds -> pid == task_tgid_vnr ( current ) || <S2SV_StartBug> ns_capable ( current -> nsproxy -> pid_ns -> user_ns , CAP_SYS_ADMIN ) ) && <S2SV_EndBug> ( ( uid_eq ( uid , cred -> uid ) || uid_eq ( uid , cred -> euid ) || uid_eq ( uid , cred -> suid ) ) || nsown_capable ( CAP_SETUID ) ) && ( ( gid_eq ( gid , cred -> gid ) || gid_eq ( gid , cred -> egid ) || gid_eq ( gid , cred -> sgid ) ) || nsown_capable ( CAP_SETGID ) ) ) { return 0 ; } return - EPERM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> || ns_capable ( task_active_pid_ns ( current ) <S2SV_ModEnd> -> user_ns ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_get_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { vpx_ref_frame_t * data = va_arg ( args , vpx_ref_frame_t * ) ; if ( data ) { vpx_ref_frame_t * frame = ( vpx_ref_frame_t * ) data ; YV12_BUFFER_CONFIG sd ; image2yuvconfig ( & frame -> img , & sd ) ; vp8_get_reference ( ctx -> cpi , frame -> frame_type , & sd ) ; return VPX_CODEC_OK ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8539\n\n```\nCWE-264 static int encrypted_update ( struct key * key , struct key_preparsed_payload * prep ) { struct encrypted_key_payload * epayload = key -> payload . data [ 0 ] ; struct encrypted_key_payload * new_epayload ; char * buf ; char * new_master_desc = NULL ; const char * format = NULL ; size_t datalen = prep -> datalen ; <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> if ( datalen <= 0 || datalen > 32767 || ! prep -> data ) return - EINVAL ; buf = kmalloc ( datalen + 1 , GFP_KERNEL ) ; if ( ! buf ) return - ENOMEM ; buf [ datalen ] = 0 ; memcpy ( buf , prep -> data , datalen ) ; ret = datablob_parse ( buf , & format , & new_master_desc , NULL , NULL ) ; if ( ret < 0 ) goto out ; ret = valid_master_desc ( new_master_desc , epayload -> master_desc ) ; if ( ret < 0 ) goto out ; new_epayload = encrypted_key_alloc ( key , epayload -> format , new_master_desc , epayload -> datalen ) ; if ( IS_ERR ( new_epayload ) ) { ret = PTR_ERR ( new_epayload ) ; goto out ; } __ekey_init ( new_epayload , epayload -> format , new_master_desc , epayload -> datalen ) ; memcpy ( new_epayload -> iv , epayload -> iv , ivsize ) ; memcpy ( new_epayload -> payload_data , epayload -> payload_data , epayload -> payload_datalen ) ; rcu_assign_keypointer ( key , new_epayload ) ; call_rcu ( & epayload -> rcu , encrypted_rcu_free ) ; out : kfree ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret = 0 ; if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) return - ENOKEY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13053\n\n```\nCWE-125 static int decode_rt_routing_info ( netdissect_options * ndo , const u_char * pptr , char * buf , u_int buflen ) { uint8_t route_target [ 8 ] ; u_int plen ; <S2SV_StartBug> ND_TCHECK ( pptr [ 0 ] ) ; <S2SV_EndBug> plen = pptr [ 0 ] ; if ( 0 == plen ) { snprintf ( buf , buflen , \"default<S2SV_blank>route<S2SV_blank>target\" ) ; return 1 ; } if ( 32 > plen ) return - 1 ; <S2SV_StartBug> plen -= 32 ; <S2SV_EndBug> if ( 64 < plen ) return - 1 ; memset ( & route_target , 0 , sizeof ( route_target ) ) ; <S2SV_StartBug> ND_TCHECK2 ( pptr [ 1 ] , ( plen + 7 ) / 8 ) ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & route_target , & pptr [ 1 ] , ( plen + 7 ) / 8 ) ; <S2SV_EndBug> if ( plen % 8 ) { ( ( u_char * ) & route_target ) [ ( plen + 7 ) / 8 - 1 ] &= ( ( 0xff00 >> ( plen % 8 ) ) & 0xff ) ; } snprintf ( buf , buflen , \"origin<S2SV_blank>AS:<S2SV_blank>%s,<S2SV_blank>route<S2SV_blank>target<S2SV_blank>%s\" , <S2SV_StartBug> as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( pptr + 1 ) ) , <S2SV_EndBug> bgp_vpn_rd_print ( ndo , ( u_char * ) & route_target ) ) ; return 5 + ( plen + 7 ) / 8 ; trunc : return - 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_int plen ; char asbuf [ sizeof ( astostr ) ] ; <S2SV_ModStart> - 1 ; ND_TCHECK_32BITS ( pptr + 1 ) ; as_printf ( ndo , asbuf , sizeof ( asbuf ) , EXTRACT_32BITS ( pptr + 1 ) ) ; <S2SV_ModStart> ( pptr [ 5 <S2SV_ModEnd> ] , ( <S2SV_ModStart> & pptr [ 5 <S2SV_ModEnd> ] , ( <S2SV_ModStart> , \"origin<S2SV_blank>AS:<S2SV_blank>%s,<S2SV_blank>route<S2SV_blank>target<S2SV_blank>%s\" , asbuf <S2SV_ModEnd> , bgp_vpn_rd_print (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4387\n\n```\nCWE-119 int ip6_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int transhdrlen , int hlimit , int tclass , struct ipv6_txoptions * opt , struct flowi6 * fl6 , struct rt6_info * rt , unsigned int flags , int dontfrag ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_cork * cork ; struct sk_buff * skb , * skb_prev = NULL ; unsigned int maxfraglen , fragheaderlen , mtu ; int exthdrlen ; int dst_exthdrlen ; int hh_len ; int copy ; int err ; int offset = 0 ; __u8 tx_flags = 0 ; if ( flags & MSG_PROBE ) return 0 ; cork = & inet -> cork . base ; if ( skb_queue_empty ( & sk -> sk_write_queue ) ) { if ( opt ) { if ( WARN_ON ( np -> cork . opt ) ) return - EINVAL ; np -> cork . opt = kzalloc ( opt -> tot_len , sk -> sk_allocation ) ; if ( unlikely ( np -> cork . opt == NULL ) ) return - ENOBUFS ; np -> cork . opt -> tot_len = opt -> tot_len ; np -> cork . opt -> opt_flen = opt -> opt_flen ; np -> cork . opt -> opt_nflen = opt -> opt_nflen ; np -> cork . opt -> dst0opt = ip6_opt_dup ( opt -> dst0opt , sk -> sk_allocation ) ; if ( opt -> dst0opt && ! np -> cork . opt -> dst0opt ) return - ENOBUFS ; np -> cork . opt -> dst1opt = ip6_opt_dup ( opt -> dst1opt , sk -> sk_allocation ) ; if ( opt -> dst1opt && ! np -> cork . opt -> dst1opt ) return - ENOBUFS ; np -> cork . opt -> hopopt = ip6_opt_dup ( opt -> hopopt , sk -> sk_allocation ) ; if ( opt -> hopopt && ! np -> cork . opt -> hopopt ) return - ENOBUFS ; np -> cork . opt -> srcrt = ip6_rthdr_dup ( opt -> srcrt , sk -> sk_allocation ) ; if ( opt -> srcrt && ! np -> cork . opt -> srcrt ) return - ENOBUFS ; } dst_hold ( & rt -> dst ) ; cork -> dst = & rt -> dst ; inet -> cork . fl . u . ip6 = * fl6 ; np -> cork . hop_limit = hlimit ; np -> cork . tclass = tclass ; if ( rt -> dst . flags & DST_XFRM_TUNNEL ) mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( & rt -> dst ) ; else mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( rt -> dst . path ) ; if ( np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } cork -> fragsize = mtu ; if ( dst_allfrag ( rt -> dst . path ) ) cork -> flags |= IPCORK_ALLFRAG ; cork -> length = 0 ; exthdrlen = ( opt ? opt -> opt_flen : 0 ) ; length += exthdrlen ; transhdrlen += exthdrlen ; dst_exthdrlen = rt -> dst . header_len - rt -> rt6i_nfheader_len ; } else { rt = ( struct rt6_info * ) cork -> dst ; fl6 = & inet -> cork . fl . u . ip6 ; opt = np -> cork . opt ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; mtu = cork -> fragsize ; } hh_len = LL_RESERVED_SPACE ( rt -> dst . dev ) ; fragheaderlen = sizeof ( struct ipv6hdr ) + rt -> rt6i_nfheader_len + ( opt ? opt -> opt_nflen : 0 ) ; maxfraglen = ( ( mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; if ( mtu <= sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN ) { if ( cork -> length + length > sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN - fragheaderlen ) { ipv6_local_error ( sk , EMSGSIZE , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } } if ( sk -> sk_type == SOCK_DGRAM ) sock_tx_timestamp ( sk , & tx_flags ) ; <S2SV_StartBug> cork -> length += length ; <S2SV_EndBug> <S2SV_StartBug> if ( length > mtu ) { <S2SV_EndBug> int proto = sk -> sk_protocol ; <S2SV_StartBug> if ( dontfrag && ( proto == IPPROTO_UDP || proto == IPPROTO_RAW ) ) { <S2SV_EndBug> ipv6_local_rxpmtu ( sk , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } <S2SV_StartBug> if ( proto == IPPROTO_UDP && <S2SV_EndBug> ( rt -> dst . dev -> features & NETIF_F_UFO ) ) { err = ip6_ufo_append_data ( sk , getfrag , from , length , hh_len , fragheaderlen , transhdrlen , mtu , flags , rt ) ; if ( err ) goto error ; return 0 ; } <S2SV_StartBug> } <S2SV_EndBug> if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) goto alloc_new_skb ; while ( length > 0 ) { copy = ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - skb -> len ; if ( copy < length ) copy = maxfraglen - skb -> len ; if ( copy <= 0 ) { char * data ; unsigned int datalen ; unsigned int fraglen ; unsigned int fraggap ; unsigned int alloclen ; alloc_new_skb : if ( skb ) fraggap = skb -> len - maxfraglen ; else fraggap = 0 ; if ( skb == NULL || skb_prev == NULL ) ip6_append_data_mtu ( & mtu , & maxfraglen , fragheaderlen , skb , rt , np -> pmtudisc == IPV6_PMTUDISC_PROBE ) ; skb_prev = skb ; datalen = length + fraggap ; if ( datalen > ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - fragheaderlen ) datalen = maxfraglen - fragheaderlen - rt -> dst . trailer_len ; if ( ( flags & MSG_MORE ) && ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) alloclen = mtu ; else alloclen = datalen + fragheaderlen ; alloclen += dst_exthdrlen ; if ( datalen != length + fraggap ) { datalen += rt -> dst . trailer_len ; } alloclen += rt -> dst . trailer_len ; fraglen = datalen + fragheaderlen ; alloclen += sizeof ( struct frag_hdr ) ; if ( transhdrlen ) { skb = sock_alloc_send_skb ( sk , alloclen + hh_len , ( flags & MSG_DONTWAIT ) , & err ) ; } else { skb = NULL ; if ( atomic_read ( & sk -> sk_wmem_alloc ) <= 2 * sk -> sk_sndbuf ) skb = sock_wmalloc ( sk , alloclen + hh_len , 1 , sk -> sk_allocation ) ; if ( unlikely ( skb == NULL ) ) err = - ENOBUFS ; else { tx_flags = 0 ; } } if ( skb == NULL ) goto error ; skb -> protocol = htons ( ETH_P_IPV6 ) ; skb -> ip_summed = CHECKSUM_NONE ; skb -> csum = 0 ; skb_reserve ( skb , hh_len + sizeof ( struct frag_hdr ) + dst_exthdrlen ) ; if ( sk -> sk_type == SOCK_DGRAM ) skb_shinfo ( skb ) -> tx_flags = tx_flags ; data = skb_put ( skb , fraglen ) ; skb_set_network_header ( skb , exthdrlen ) ; data += fragheaderlen ; skb -> transport_header = ( skb -> network_header + fragheaderlen ) ; if ( fraggap ) { skb -> csum = skb_copy_and_csum_bits ( skb_prev , maxfraglen , data + transhdrlen , fraggap , 0 ) ; skb_prev -> csum = csum_sub ( skb_prev -> csum , skb -> csum ) ; data += fraggap ; pskb_trim_unique ( skb_prev , maxfraglen ) ; } copy = datalen - transhdrlen - fraggap ; if ( copy < 0 ) { err = - EINVAL ; kfree_skb ( skb ) ; goto error ; } else if ( copy > 0 && getfrag ( from , data + transhdrlen , offset , copy , fraggap , skb ) < 0 ) { err = - EFAULT ; kfree_skb ( skb ) ; goto error ; } offset += copy ; length -= datalen - fraggap ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; continue ; } if ( copy > length ) copy = length ; if ( ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) { unsigned int off ; off = skb -> len ; if ( getfrag ( from , skb_put ( skb , copy ) , offset , copy , off , skb ) < 0 ) { __skb_trim ( skb , off ) ; err = - EFAULT ; goto error ; } } else { int i = skb_shinfo ( skb ) -> nr_frags ; struct page_frag * pfrag = sk_page_frag ( sk ) ; err = - ENOMEM ; if ( ! sk_page_frag_refill ( sk , pfrag ) ) goto error ; if ( ! skb_can_coalesce ( skb , i , pfrag -> page , pfrag -> offset ) ) { err = - EMSGSIZE ; if ( i == MAX_SKB_FRAGS ) goto error ; __skb_fill_page_desc ( skb , i , pfrag -> page , pfrag -> offset , 0 ) ; skb_shinfo ( skb ) -> nr_frags = ++ i ; get_page ( pfrag -> page ) ; } copy = min_t ( int , copy , pfrag -> size - pfrag -> offset ) ; if ( getfrag ( from , page_address ( pfrag -> page ) + pfrag -> offset , offset , copy , skb -> len , skb ) < 0 ) goto error_efault ; pfrag -> offset += copy ; skb_frag_size_add ( & skb_shinfo ( skb ) -> frags [ i - 1 ] , copy ) ; skb -> len += copy ; skb -> data_len += copy ; skb -> truesize += copy ; atomic_add ( copy , & sk -> sk_wmem_alloc ) ; } offset += copy ; length -= copy ; } return 0 ; error_efault : err = - EFAULT ; error : cork -> length -= length ; IP6_INC_STATS ( sock_net ( sk ) , rt -> rt6i_idev , IPSTATS_MIB_OUTDISCARDS ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tx_flags ) ; if ( <S2SV_ModEnd> ( length > <S2SV_ModStart> > mtu ) && <S2SV_ModEnd> dontfrag && ( <S2SV_ModStart> dontfrag && ( sk -> sk_protocol <S2SV_ModEnd> == IPPROTO_UDP || <S2SV_ModStart> == IPPROTO_UDP || sk -> sk_protocol <S2SV_ModEnd> == IPPROTO_RAW ) <S2SV_ModStart> EMSGSIZE ; } skb = skb_peek_tail ( & sk -> sk_write_queue ) ; cork -> length += length ; if ( ( ( length > mtu ) || ( skb && skb_is_gso ( skb ) ) ) && ( sk -> sk_protocol == IPPROTO_UDP ) <S2SV_ModEnd> && ( rt <S2SV_ModStart> 0 ; } if ( ! skb <S2SV_ModEnd> ) goto alloc_new_skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15932\n\n```\nCWE-125 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( shdr -> sh_size < 1 ) { return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; for ( cnt = 0 , i = 0 ; i >= 0 && cnt < shdr -> sh_info && ( ( char * ) defs + i < end ) ; ++ cnt ) { Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; char key [ 32 ] = { 0 } ; Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) <S2SV_StartBug> vstart += verdef -> vd_aux ; <S2SV_EndBug> if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; } i += verdef -> vd_next ; } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , j ) int vdaux = verdef -> vd_aux ; if ( vdaux < 1 ) { sdb_free ( sdb_verdef ) ; goto out_error ; } vstart += vdaux <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static int unmap_ref_private ( struct mm_struct * mm , struct vm_area_struct * vma , struct page * page , unsigned long address ) { struct hstate * h = hstate_vma ( vma ) ; struct vm_area_struct * iter_vma ; struct address_space * mapping ; struct prio_tree_iter iter ; pgoff_t pgoff ; address = address & huge_page_mask ( h ) ; pgoff = vma_hugecache_offset ( h , vma , address ) ; <S2SV_StartBug> mapping = ( struct address_space * ) page_private ( page ) ; <S2SV_EndBug> mutex_lock ( & mapping -> i_mmap_mutex ) ; vma_prio_tree_foreach ( iter_vma , & iter , & mapping -> i_mmap , pgoff , pgoff ) { if ( iter_vma == vma ) continue ; if ( ! is_vma_resv_set ( iter_vma , HPAGE_RESV_OWNER ) ) __unmap_hugepage_range ( iter_vma , address , address + huge_page_size ( h ) , page ) ; } mutex_unlock ( & mapping -> i_mmap_mutex ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; mapping = vma -> vm_file -> f_dentry -> d_inode -> i_mapping <S2SV_ModEnd> ; mutex_lock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8539\n\n```\nCWE-264 int user_update ( struct key * key , struct key_preparsed_payload * prep ) { struct user_key_payload * upayload , * zap ; size_t datalen = prep -> datalen ; int ret ; ret = - EINVAL ; if ( datalen <= 0 || datalen > 32767 || ! prep -> data ) goto error ; ret = - ENOMEM ; upayload = kmalloc ( sizeof ( * upayload ) + datalen , GFP_KERNEL ) ; if ( ! upayload ) goto error ; upayload -> datalen = datalen ; memcpy ( upayload -> data , prep -> data , datalen ) ; zap = upayload ; ret = key_payload_reserve ( key , datalen ) ; if ( ret == 0 ) { <S2SV_StartBug> zap = key -> payload . data [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> rcu_assign_keypointer ( key , upayload ) ; <S2SV_EndBug> key -> expiry = 0 ; } if ( zap ) kfree_rcu ( zap , rcu ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( ! test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) <S2SV_ModStart> 0 ] ; else zap = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_fht8x8_c ( const int16_t * input , int16_t * output , <S2SV_EndBug> int stride , int tx_type ) { if ( tx_type == DCT_DCT ) { <S2SV_StartBug> vp9_fdct8x8_c ( input , output , stride ) ; <S2SV_EndBug> } else { <S2SV_StartBug> int16_t out [ 64 ] ; <S2SV_EndBug> <S2SV_StartBug> int16_t * outptr = & out [ 0 ] ; <S2SV_EndBug> int i , j ; <S2SV_StartBug> int16_t temp_in [ 8 ] , temp_out [ 8 ] ; <S2SV_EndBug> const transform_2d ht = FHT_8 [ tx_type ] ; for ( i = 0 ; i < 8 ; ++ i ) { for ( j = 0 ; j < 8 ; ++ j ) temp_in [ j ] = input [ j * stride + i ] * 4 ; ht . cols ( temp_in , temp_out ) ; for ( j = 0 ; j < 8 ; ++ j ) <S2SV_StartBug> outptr [ j * 8 + i ] = temp_out [ j ] ; <S2SV_EndBug> } for ( i = 0 ; i < 8 ; ++ i ) { for ( j = 0 ; j < 8 ; ++ j ) temp_in [ j ] = out [ j + i * 8 ] ; ht . rows ( temp_in , temp_out ) ; for ( j = 0 ; j < 8 ; ++ j ) output [ j + i * 8 ] = ( temp_out [ j ] + ( temp_out [ j ] < 0 ) ) >> 1 ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * input , tran_low_t <S2SV_ModEnd> * output , <S2SV_ModStart> DCT_DCT ) { vpx_fdct8x8_c <S2SV_ModEnd> ( input , <S2SV_ModStart> } else { tran_low_t <S2SV_ModEnd> out [ 64 <S2SV_ModStart> 64 ] ; <S2SV_ModEnd> int i , <S2SV_ModStart> , j ; tran_low_t <S2SV_ModEnd> temp_in [ 8 <S2SV_ModStart> ++ j ) out <S2SV_ModEnd> [ j *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int cop1Emulate ( struct pt_regs * xcp , struct mips_fpu_struct * ctx , void * __user * fault_addr ) { mips_instruction ir ; unsigned long emulpc , contpc ; unsigned int cond ; if ( ! access_ok ( VERIFY_READ , xcp -> cp0_epc , sizeof ( mips_instruction ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) xcp -> cp0_epc ; return SIGBUS ; } if ( __get_user ( ir , ( mips_instruction __user * ) xcp -> cp0_epc ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) xcp -> cp0_epc ; return SIGSEGV ; } if ( ( xcp -> cp0_cause & CAUSEF_BD ) && ! isBranchInstr ( & ir ) ) xcp -> cp0_cause &= ~ CAUSEF_BD ; if ( xcp -> cp0_cause & CAUSEF_BD ) { emulpc = xcp -> cp0_epc + 4 ; if ( __compute_return_epc ( xcp ) ) { # ifdef CP1DBG printk ( \"failed<S2SV_blank>to<S2SV_blank>emulate<S2SV_blank>branch<S2SV_blank>at<S2SV_blank>%p\\\\n\" , ( void * ) ( xcp -> cp0_epc ) ) ; # endif return SIGILL ; } if ( ! access_ok ( VERIFY_READ , emulpc , sizeof ( mips_instruction ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) emulpc ; return SIGBUS ; } if ( __get_user ( ir , ( mips_instruction __user * ) emulpc ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) emulpc ; return SIGSEGV ; } contpc = xcp -> cp0_epc ; xcp -> cp0_epc = emulpc - 4 ; } else { emulpc = xcp -> cp0_epc ; contpc = xcp -> cp0_epc + 4 ; } emul : perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , xcp , 0 ) ; <S2SV_EndBug> MIPS_FPU_EMU_INC_STATS ( emulated ) ; switch ( MIPSInst_OPCODE ( ir ) ) { case ldc1_op : { u64 __user * va = ( u64 __user * ) ( xcp -> regs [ MIPSInst_RS ( ir ) ] + MIPSInst_SIMM ( ir ) ) ; u64 val ; MIPS_FPU_EMU_INC_STATS ( loads ) ; if ( ! access_ok ( VERIFY_READ , va , sizeof ( u64 ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGBUS ; } if ( __get_user ( val , va ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGSEGV ; } DITOREG ( val , MIPSInst_RT ( ir ) ) ; break ; } case sdc1_op : { u64 __user * va = ( u64 __user * ) ( xcp -> regs [ MIPSInst_RS ( ir ) ] + MIPSInst_SIMM ( ir ) ) ; u64 val ; MIPS_FPU_EMU_INC_STATS ( stores ) ; DIFROMREG ( val , MIPSInst_RT ( ir ) ) ; if ( ! access_ok ( VERIFY_WRITE , va , sizeof ( u64 ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGBUS ; } if ( __put_user ( val , va ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGSEGV ; } break ; } case lwc1_op : { u32 __user * va = ( u32 __user * ) ( xcp -> regs [ MIPSInst_RS ( ir ) ] + MIPSInst_SIMM ( ir ) ) ; u32 val ; MIPS_FPU_EMU_INC_STATS ( loads ) ; if ( ! access_ok ( VERIFY_READ , va , sizeof ( u32 ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGBUS ; } if ( __get_user ( val , va ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGSEGV ; } SITOREG ( val , MIPSInst_RT ( ir ) ) ; break ; } case swc1_op : { u32 __user * va = ( u32 __user * ) ( xcp -> regs [ MIPSInst_RS ( ir ) ] + MIPSInst_SIMM ( ir ) ) ; u32 val ; MIPS_FPU_EMU_INC_STATS ( stores ) ; SIFROMREG ( val , MIPSInst_RT ( ir ) ) ; if ( ! access_ok ( VERIFY_WRITE , va , sizeof ( u32 ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGBUS ; } if ( __put_user ( val , va ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = va ; return SIGSEGV ; } break ; } case cop1_op : switch ( MIPSInst_RS ( ir ) ) { # if defined ( __mips64 ) case dmfc_op : if ( MIPSInst_RT ( ir ) != 0 ) { DIFROMREG ( xcp -> regs [ MIPSInst_RT ( ir ) ] , MIPSInst_RD ( ir ) ) ; } break ; case dmtc_op : DITOREG ( xcp -> regs [ MIPSInst_RT ( ir ) ] , MIPSInst_RD ( ir ) ) ; break ; # endif case mfc_op : if ( MIPSInst_RT ( ir ) != 0 ) { SIFROMREG ( xcp -> regs [ MIPSInst_RT ( ir ) ] , MIPSInst_RD ( ir ) ) ; } break ; case mtc_op : SITOREG ( xcp -> regs [ MIPSInst_RT ( ir ) ] , MIPSInst_RD ( ir ) ) ; break ; case cfc_op : { u32 value ; if ( MIPSInst_RD ( ir ) == FPCREG_CSR ) { value = ctx -> fcr31 ; value = ( value & ~ FPU_CSR_RM ) | mips_rm [ modeindex ( value ) ] ; # ifdef CSRTRACE printk ( \"%p<S2SV_blank>gpr[%d]<-csr=%08x\\\\n\" , ( void * ) ( xcp -> cp0_epc ) , MIPSInst_RT ( ir ) , value ) ; # endif } else if ( MIPSInst_RD ( ir ) == FPCREG_RID ) value = 0 ; else value = 0 ; if ( MIPSInst_RT ( ir ) ) xcp -> regs [ MIPSInst_RT ( ir ) ] = value ; break ; } case ctc_op : { u32 value ; if ( MIPSInst_RT ( ir ) == 0 ) value = 0 ; else value = xcp -> regs [ MIPSInst_RT ( ir ) ] ; if ( MIPSInst_RD ( ir ) == FPCREG_CSR ) { # ifdef CSRTRACE printk ( \"%p<S2SV_blank>gpr[%d]->csr=%08x\\\\n\" , ( void * ) ( xcp -> cp0_epc ) , MIPSInst_RT ( ir ) , value ) ; # endif ctx -> fcr31 = ( value & ~ ( FPU_CSR_RSVD | FPU_CSR_RM ) ) | ieee_rm [ modeindex ( value ) ] ; } if ( ( ctx -> fcr31 >> 5 ) & ctx -> fcr31 & FPU_CSR_ALL_E ) { return SIGFPE ; } break ; } case bc_op : { int likely = 0 ; if ( xcp -> cp0_cause & CAUSEF_BD ) return SIGILL ; # if __mips >= 4 cond = ctx -> fcr31 & fpucondbit [ MIPSInst_RT ( ir ) >> 2 ] ; # else cond = ctx -> fcr31 & FPU_CSR_COND ; # endif switch ( MIPSInst_RT ( ir ) & 3 ) { case bcfl_op : likely = 1 ; case bcf_op : cond = ! cond ; break ; case bctl_op : likely = 1 ; case bct_op : break ; default : return SIGILL ; } xcp -> cp0_cause |= CAUSEF_BD ; if ( cond ) { xcp -> cp0_epc += 4 ; contpc = ( xcp -> cp0_epc + ( MIPSInst_SIMM ( ir ) << 2 ) ) ; if ( ! access_ok ( VERIFY_READ , xcp -> cp0_epc , sizeof ( mips_instruction ) ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) xcp -> cp0_epc ; return SIGBUS ; } if ( __get_user ( ir , ( mips_instruction __user * ) xcp -> cp0_epc ) ) { MIPS_FPU_EMU_INC_STATS ( errors ) ; * fault_addr = ( mips_instruction __user * ) xcp -> cp0_epc ; return SIGSEGV ; } switch ( MIPSInst_OPCODE ( ir ) ) { case lwc1_op : case swc1_op : # if ( __mips >= 2 || defined ( __mips64 ) ) case ldc1_op : case sdc1_op : # endif case cop1_op : # if __mips >= 4 && __mips != 32 case cop1x_op : # endif goto emul ; # if __mips >= 4 case spec_op : if ( MIPSInst_FUNC ( ir ) == movc_op ) goto emul ; break ; # endif } return mips_dsemul ( xcp , ir , contpc ) ; } else { if ( likely ) { xcp -> cp0_epc += 4 ; contpc += 4 ; } } break ; } default : if ( ! ( MIPSInst_RS ( ir ) & 0x10 ) ) return SIGILL ; { int sig ; if ( ( sig = fpu_emu ( xcp , ctx , ir ) ) ) return sig ; } } break ; # if __mips >= 4 && __mips != 32 case cop1x_op : { int sig = fpux_emu ( xcp , ctx , ir , fault_addr ) ; if ( sig ) return sig ; break ; } # endif # if __mips >= 4 case spec_op : if ( MIPSInst_FUNC ( ir ) != movc_op ) return SIGILL ; cond = fpucondbit [ MIPSInst_RT ( ir ) >> 2 ] ; if ( ( ( ctx -> fcr31 & cond ) != 0 ) == ( ( MIPSInst_RT ( ir ) & 1 ) != 0 ) ) xcp -> regs [ MIPSInst_RD ( ir ) ] = xcp -> regs [ MIPSInst_RS ( ir ) ] ; break ; # endif default : return SIGILL ; } xcp -> cp0_epc = contpc ; xcp -> cp0_cause &= ~ CAUSEF_BD ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , xcp ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 BOOL transport_accept_nla ( rdpTransport * transport ) { freerdp * instance ; rdpSettings * settings ; if ( transport -> TlsIn == NULL ) transport -> TlsIn = tls_new ( transport -> settings ) ; if ( transport -> TlsOut == NULL ) transport -> TlsOut = transport -> TlsIn ; transport -> layer = TRANSPORT_LAYER_TLS ; transport -> TlsIn -> sockfd = transport -> TcpIn -> sockfd ; if ( tls_accept ( transport -> TlsIn , transport -> settings -> CertificateFile , transport -> settings -> PrivateKeyFile ) != TRUE ) return FALSE ; if ( transport -> settings -> Authentication != TRUE ) return TRUE ; settings = transport -> settings ; instance = ( freerdp * ) settings -> instance ; if ( transport -> credssp == NULL ) transport -> credssp = credssp_new ( instance , transport , settings ) ; if ( credssp_authenticate ( transport -> credssp ) < 0 ) { fprintf ( stderr , \"client<S2SV_blank>authentication<S2SV_blank>failure\\\\n\" ) ; credssp_free ( transport -> credssp ) ; <S2SV_StartBug> return FALSE ; <S2SV_EndBug> } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> credssp ) ; transport -> credssp = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int http_read_stream ( URLContext * h , uint8_t * buf , int size ) { HTTPContext * s = h -> priv_data ; int err , new_location , read_ret ; int64_t seek_ret ; if ( ! s -> hd ) return AVERROR_EOF ; if ( s -> end_chunked_post && ! s -> end_header ) { err = http_read_header ( h , & new_location ) ; if ( err < 0 ) return err ; } <S2SV_StartBug> if ( s -> chunksize >= 0 ) { <S2SV_EndBug> if ( ! s -> chunksize ) { char line [ 32 ] ; do { if ( ( err = http_get_line ( s , line , sizeof ( line ) ) ) < 0 ) return err ; } while ( ! * line ) ; <S2SV_StartBug> s -> chunksize = strtoll ( line , NULL , 16 ) ; <S2SV_EndBug> <S2SV_StartBug> av_log ( NULL , AV_LOG_TRACE , \"Chunked<S2SV_blank>encoding<S2SV_blank>data<S2SV_blank>size:<S2SV_blank>%\" PRId64 \"\\'\\\\n\" , <S2SV_EndBug> s -> chunksize ) ; if ( ! s -> chunksize ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } size = FFMIN ( size , s -> chunksize ) ; } # if CONFIG_ZLIB if ( s -> compressed ) return http_buf_read_compressed ( h , buf , size ) ; # endif read_ret = http_buf_read ( h , buf , size ) ; if ( ( read_ret < 0 && s -> reconnect && ( ! h -> is_streamed || s -> reconnect_streamed ) && s -> filesize > 0 && s -> off < s -> filesize ) || ( read_ret == 0 && s -> reconnect_at_eof && ( ! h -> is_streamed || s -> reconnect_streamed ) ) ) { <S2SV_StartBug> int64_t target = h -> is_streamed ? 0 : s -> off ; <S2SV_EndBug> if ( s -> reconnect_delay > s -> reconnect_delay_max ) return AVERROR ( EIO ) ; <S2SV_StartBug> av_log ( h , AV_LOG_INFO , \"Will<S2SV_blank>reconnect<S2SV_blank>at<S2SV_blank>%\" PRId64 \"<S2SV_blank>error=%s.\\\\n\" , s -> off , av_err2str ( read_ret ) ) ; <S2SV_EndBug> av_usleep ( 1000U * 1000 * s -> reconnect_delay ) ; s -> reconnect_delay = 1 + 2 * s -> reconnect_delay ; seek_ret = http_seek_internal ( h , target , SEEK_SET , 1 ) ; if ( seek_ret != target ) { <S2SV_StartBug> av_log ( h , AV_LOG_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>reconnect<S2SV_blank>at<S2SV_blank>%\" PRId64 \".\\\\n\" , target ) ; <S2SV_EndBug> return read_ret ; } read_ret = http_buf_read ( h , buf , size ) ; } else s -> reconnect_delay = 0 ; return read_ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s -> chunksize != UINT64_MAX <S2SV_ModEnd> ) { if <S2SV_ModStart> -> chunksize = strtoull <S2SV_ModEnd> ( line , <S2SV_ModStart> ; av_log ( h <S2SV_ModEnd> , AV_LOG_TRACE , <S2SV_ModStart> AV_LOG_TRACE , \"Chunked<S2SV_blank>encoding<S2SV_blank>data<S2SV_blank>size:<S2SV_blank>%\" PRIu64 <S2SV_ModEnd> \"\\'\\\\n\" , s <S2SV_ModStart> return 0 ; else if ( s -> chunksize == UINT64_MAX ) { av_log ( h , AV_LOG_ERROR , \"Invalid<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>%\" PRIu64 \"\\\\n\" , s -> chunksize ) ; return AVERROR ( EINVAL ) ; } <S2SV_ModStart> ) ) { uint64_t <S2SV_ModEnd> target = h <S2SV_ModStart> AV_LOG_INFO , \"Will<S2SV_blank>reconnect<S2SV_blank>at<S2SV_blank>%\" PRIu64 <S2SV_ModEnd> \"<S2SV_blank>error=%s.\\\\n\" , s <S2SV_ModStart> AV_LOG_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>reconnect<S2SV_blank>at<S2SV_blank>%\" PRIu64 <S2SV_ModEnd> \".\\\\n\" , target\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7456\n\n```\nCWE-125 static inline LineContribType * _gdContributionsCalc ( unsigned int line_size , unsigned int src_size , double scale_d , const interpolation_method pFilter ) { double width_d ; double scale_f_d = 1.0 ; const double filter_width_d = DEFAULT_BOX_RADIUS ; int windows_size ; unsigned int u ; LineContribType * res ; if ( scale_d < 1.0 ) { width_d = filter_width_d / scale_d ; scale_f_d = scale_d ; } else { width_d = filter_width_d ; } windows_size = 2 * ( int ) ceil ( width_d ) + 1 ; res = _gdContributionsAlloc ( line_size , windows_size ) ; for ( u = 0 ; u < line_size ; u ++ ) { const double dCenter = ( double ) u / scale_d ; register int iLeft = MAX ( 0 , ( int ) floor ( dCenter - width_d ) ) ; int iRight = MIN ( ( int ) ceil ( dCenter + width_d ) , ( int ) src_size - 1 ) ; double dTotalWeight = 0.0 ; <S2SV_StartBug> int iSrc ; <S2SV_EndBug> res -> ContribRow [ u ] . Left = iLeft ; res -> ContribRow [ u ] . Right = iRight ; if ( iRight - iLeft + 1 > windows_size ) { if ( iLeft < ( ( int ) src_size - 1 / 2 ) ) { iLeft ++ ; } else { iRight -- ; } } <S2SV_StartBug> for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { <S2SV_EndBug> <S2SV_StartBug> dTotalWeight += ( res -> ContribRow [ u ] . Weights [ iSrc - iLeft ] = scale_f_d * ( * pFilter ) ( scale_f_d * ( dCenter - ( double ) iSrc ) ) ) ; <S2SV_EndBug> } if ( dTotalWeight < 0.0 ) { _gdContributionsFree ( res ) ; return NULL ; } if ( dTotalWeight > 0.0 ) { for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { res -> ContribRow [ u ] . Weights [ iSrc - iLeft ] /= dTotalWeight ; } } } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int iSrc <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; } } <S2SV_ModEnd> res -> ContribRow <S2SV_ModStart> u ] . Left = iLeft ; res -> ContribRow [ u ] . Right = iRight ; for ( iSrc = iLeft ; iSrc <= iRight ; iSrc ++ ) { dTotalWeight += ( res -> ContribRow [ u ] .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15861\n\n```\nCWE-476 bool ExprResolveLhs ( struct xkb_context * ctx , const ExprDef * expr , const char * * elem_rtrn , const char * * field_rtrn , ExprDef * * index_rtrn ) { switch ( expr -> expr . op ) { case EXPR_IDENT : * elem_rtrn = NULL ; * field_rtrn = xkb_atom_text ( ctx , expr -> ident . ident ) ; * index_rtrn = NULL ; <S2SV_StartBug> return true ; <S2SV_EndBug> case EXPR_FIELD_REF : * elem_rtrn = xkb_atom_text ( ctx , expr -> field_ref . element ) ; * field_rtrn = xkb_atom_text ( ctx , expr -> field_ref . field ) ; * index_rtrn = NULL ; return true ; case EXPR_ARRAY_REF : * elem_rtrn = xkb_atom_text ( ctx , expr -> array_ref . element ) ; * field_rtrn = xkb_atom_text ( ctx , expr -> array_ref . field ) ; * index_rtrn = expr -> array_ref . entry ; return true ; default : break ; } log_wsgo ( ctx , \"Unexpected<S2SV_blank>operator<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>ResolveLhs\\\\n\" , expr -> expr . op ) ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; return ( * field_rtrn != NULL ) <S2SV_ModEnd> ; case EXPR_FIELD_REF\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 static MatchinfoBuffer * fts3MIBufferNew ( int nElem , const char * zMatchinfo ) { MatchinfoBuffer * pRet ; <S2SV_StartBug> int nByte = sizeof ( u32 ) * ( 2 * nElem + 1 ) + sizeof ( MatchinfoBuffer ) ; <S2SV_EndBug> <S2SV_StartBug> int nStr = ( int ) strlen ( zMatchinfo ) ; <S2SV_EndBug> <S2SV_StartBug> pRet = sqlite3_malloc ( nByte + nStr + 1 ) ; <S2SV_EndBug> if ( pRet ) { memset ( pRet , 0 , nByte ) ; pRet -> aMatchinfo [ 0 ] = ( u8 * ) ( & pRet -> aMatchinfo [ 1 ] ) - ( u8 * ) pRet ; pRet -> aMatchinfo [ 1 + nElem ] = pRet -> aMatchinfo [ 0 ] + sizeof ( u32 ) * ( nElem + 1 ) ; pRet -> nElem = nElem ; pRet -> zMatchinfo = ( ( char * ) pRet ) + nByte ; memcpy ( pRet -> zMatchinfo , zMatchinfo , nStr + 1 ) ; pRet -> aRef [ 0 ] = 1 ; } return pRet ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * pRet ; sqlite3_int64 <S2SV_ModEnd> nByte = sizeof <S2SV_ModStart> ( 2 * ( sqlite3_int64 ) <S2SV_ModStart> MatchinfoBuffer ) ; sqlite3_int64 nStr = <S2SV_ModEnd> strlen ( zMatchinfo <S2SV_ModStart> ; pRet = sqlite3_malloc64 <S2SV_ModEnd> ( nByte +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5829\n\n```\nCWE-119 static noinline int hiddev_ioctl_usage ( struct hiddev * hiddev , unsigned int cmd , void __user * user_arg ) { struct hid_device * hid = hiddev -> hid ; struct hiddev_report_info rinfo ; struct hiddev_usage_ref_multi * uref_multi = NULL ; struct hiddev_usage_ref * uref ; struct hid_report * report ; struct hid_field * field ; int i ; uref_multi = kmalloc ( sizeof ( struct hiddev_usage_ref_multi ) , GFP_KERNEL ) ; if ( ! uref_multi ) return - ENOMEM ; uref = & uref_multi -> uref ; if ( cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES ) { if ( copy_from_user ( uref_multi , user_arg , sizeof ( * uref_multi ) ) ) goto fault ; } else { if ( copy_from_user ( uref , user_arg , sizeof ( * uref ) ) ) goto fault ; } switch ( cmd ) { case HIDIOCGUCODE : rinfo . report_type = uref -> report_type ; rinfo . report_id = uref -> report_id ; if ( ( report = hiddev_lookup_report ( hid , & rinfo ) ) == NULL ) goto inval ; if ( uref -> field_index >= report -> maxfield ) goto inval ; field = report -> field [ uref -> field_index ] ; if ( uref -> usage_index >= field -> maxusage ) goto inval ; uref -> usage_code = field -> usage [ uref -> usage_index ] . hid ; if ( copy_to_user ( user_arg , uref , sizeof ( * uref ) ) ) goto fault ; goto goodreturn ; default : if ( cmd != HIDIOCGUSAGE && cmd != HIDIOCGUSAGES && uref -> report_type == HID_REPORT_TYPE_INPUT ) goto inval ; if ( uref -> report_id == HID_REPORT_ID_UNKNOWN ) { field = hiddev_lookup_usage ( hid , uref ) ; if ( field == NULL ) goto inval ; } else { rinfo . report_type = uref -> report_type ; rinfo . report_id = uref -> report_id ; if ( ( report = hiddev_lookup_report ( hid , & rinfo ) ) == NULL ) goto inval ; if ( uref -> field_index >= report -> maxfield ) goto inval ; field = report -> field [ uref -> field_index ] ; if ( cmd == HIDIOCGCOLLECTIONINDEX ) { if ( uref -> usage_index >= field -> maxusage ) goto inval ; } else if ( uref -> usage_index >= field -> report_count ) goto inval ; <S2SV_StartBug> else if ( ( cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES ) && <S2SV_EndBug> ( uref_multi -> num_values > HID_MAX_MULTI_USAGES || uref -> usage_index + uref_multi -> num_values > field -> report_count ) ) goto inval ; <S2SV_StartBug> } <S2SV_EndBug> switch ( cmd ) { case HIDIOCGUSAGE : uref -> value = field -> value [ uref -> usage_index ] ; if ( copy_to_user ( user_arg , uref , sizeof ( * uref ) ) ) goto fault ; goto goodreturn ; case HIDIOCSUSAGE : field -> value [ uref -> usage_index ] = uref -> value ; goto goodreturn ; case HIDIOCGCOLLECTIONINDEX : i = field -> usage [ uref -> usage_index ] . collection_index ; kfree ( uref_multi ) ; return i ; case HIDIOCGUSAGES : for ( i = 0 ; i < uref_multi -> num_values ; i ++ ) uref_multi -> values [ i ] = field -> value [ uref -> usage_index + i ] ; if ( copy_to_user ( user_arg , uref_multi , sizeof ( * uref_multi ) ) ) goto fault ; goto goodreturn ; case HIDIOCSUSAGES : for ( i = 0 ; i < uref_multi -> num_values ; i ++ ) field -> value [ uref -> usage_index + i ] = uref_multi -> values [ i ] ; goto goodreturn ; } goodreturn : kfree ( uref_multi ) ; return 0 ; fault : kfree ( uref_multi ) ; return - EFAULT ; inval : kfree ( uref_multi ) ; return - EINVAL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto inval ; } <S2SV_ModEnd> if ( ( <S2SV_ModStart> goto inval ; <S2SV_ModEnd> switch ( cmd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 int handle_ldf_stq ( u32 insn , struct pt_regs * regs ) { unsigned long addr = compute_effective_address ( regs , insn , 0 ) ; int freg = ( ( insn >> 25 ) & 0x1e ) | ( ( insn >> 20 ) & 0x20 ) ; struct fpustate * f = FPUSTATE ; int asi = decode_asi ( insn , regs ) ; int flag = ( freg < 32 ) ? FPRS_DL : FPRS_DU ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , 0 ) ; <S2SV_EndBug> save_and_clear_fpu ( ) ; current_thread_info ( ) -> xfsr [ 0 ] &= ~ 0x1c000 ; if ( freg & 3 ) { current_thread_info ( ) -> xfsr [ 0 ] |= ( 6 << 14 ) ; do_fpother ( regs ) ; return 0 ; } if ( insn & 0x200000 ) { u64 first = 0 , second = 0 ; if ( current_thread_info ( ) -> fpsaved [ 0 ] & flag ) { first = * ( u64 * ) & f -> regs [ freg ] ; second = * ( u64 * ) & f -> regs [ freg + 2 ] ; } if ( asi < 0x80 ) { do_privact ( regs ) ; return 1 ; } switch ( asi ) { case ASI_P : case ASI_S : break ; case ASI_PL : case ASI_SL : { u64 tmp = __swab64p ( & first ) ; first = __swab64p ( & second ) ; second = tmp ; break ; } default : if ( tlb_type == hypervisor ) sun4v_data_access_exception ( regs , addr , 0 ) ; else spitfire_data_access_exception ( regs , 0 , addr ) ; return 1 ; } if ( put_user ( first >> 32 , ( u32 __user * ) addr ) || __put_user ( ( u32 ) first , ( u32 __user * ) ( addr + 4 ) ) || __put_user ( second >> 32 , ( u32 __user * ) ( addr + 8 ) ) || __put_user ( ( u32 ) second , ( u32 __user * ) ( addr + 12 ) ) ) { if ( tlb_type == hypervisor ) sun4v_data_access_exception ( regs , addr , 0 ) ; else spitfire_data_access_exception ( regs , 0 , addr ) ; return 1 ; } } else { u32 data [ 4 ] __attribute__ ( ( aligned ( 8 ) ) ) ; int size , i ; int err ; if ( asi < 0x80 ) { do_privact ( regs ) ; return 1 ; } else if ( asi > ASI_SNFL ) { if ( tlb_type == hypervisor ) sun4v_data_access_exception ( regs , addr , 0 ) ; else spitfire_data_access_exception ( regs , 0 , addr ) ; return 1 ; } switch ( insn & 0x180000 ) { case 0x000000 : size = 1 ; break ; case 0x100000 : size = 4 ; break ; default : size = 2 ; break ; } for ( i = 0 ; i < size ; i ++ ) data [ i ] = 0 ; err = get_user ( data [ 0 ] , ( u32 __user * ) addr ) ; if ( ! err ) { for ( i = 1 ; i < size ; i ++ ) err |= __get_user ( data [ i ] , ( u32 __user * ) ( addr + 4 * i ) ) ; } if ( err && ! ( asi & 0x2 ) ) { if ( tlb_type == hypervisor ) sun4v_data_access_exception ( regs , addr , 0 ) ; else spitfire_data_access_exception ( regs , 0 , addr ) ; return 1 ; } if ( asi & 0x8 ) { u64 tmp ; switch ( size ) { case 1 : data [ 0 ] = le32_to_cpup ( data + 0 ) ; break ; default : * ( u64 * ) ( data + 0 ) = le64_to_cpup ( ( u64 * ) ( data + 0 ) ) ; break ; case 4 : tmp = le64_to_cpup ( ( u64 * ) ( data + 0 ) ) ; * ( u64 * ) ( data + 0 ) = le64_to_cpup ( ( u64 * ) ( data + 2 ) ) ; * ( u64 * ) ( data + 2 ) = tmp ; break ; } } if ( ! ( current_thread_info ( ) -> fpsaved [ 0 ] & FPRS_FEF ) ) { current_thread_info ( ) -> fpsaved [ 0 ] = FPRS_FEF ; current_thread_info ( ) -> gsr [ 0 ] = 0 ; } if ( ! ( current_thread_info ( ) -> fpsaved [ 0 ] & flag ) ) { if ( freg < 32 ) memset ( f -> regs , 0 , 32 * sizeof ( u32 ) ) ; else memset ( f -> regs + 32 , 0 , 32 * sizeof ( u32 ) ) ; } memcpy ( f -> regs + freg , data , size * 4 ) ; current_thread_info ( ) -> fpsaved [ 0 ] |= flag ; } advance ( regs ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 void WT_NoiseGenerator ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame ) { EAS_PCM * pOutputBuffer ; EAS_I32 phaseInc ; EAS_I32 tmp0 ; EAS_I32 tmp1 ; EAS_I32 nInterpolatedSample ; EAS_I32 numSamples ; numSamples = pWTIntFrame -> numSamples ; if ( numSamples <= 0 ) { <S2SV_StartBug> ALOGE ( \"b/26366256\" ) ; <S2SV_EndBug> return ; } pOutputBuffer = pWTIntFrame -> pAudioBuffer ; phaseInc = pWTIntFrame -> frame . phaseIncrement ; tmp0 = ( EAS_I32 ) ( pWTVoice -> phaseAccum ) >> 18 ; tmp1 = ( EAS_I32 ) ( pWTVoice -> loopEnd ) >> 18 ; while ( numSamples -- ) { nInterpolatedSample = MULT_AUDIO_COEF ( tmp0 , ( PHASE_ONE - pWTVoice -> phaseFrac ) ) ; nInterpolatedSample += MULT_AUDIO_COEF ( tmp1 , pWTVoice -> phaseFrac ) ; * pOutputBuffer ++ = ( EAS_PCM ) nInterpolatedSample ; pWTVoice -> phaseFrac += ( EAS_U32 ) phaseInc ; if ( GET_PHASE_INT_PART ( pWTVoice -> phaseFrac ) ) { tmp0 = tmp1 ; pWTVoice -> phaseAccum = pWTVoice -> loopEnd ; pWTVoice -> loopEnd = ( 5 * pWTVoice -> loopEnd + 1 ) ; tmp1 = ( EAS_I32 ) ( pWTVoice -> loopEnd ) >> 18 ; pWTVoice -> phaseFrac = GET_PHASE_FRAC_PART ( pWTVoice -> phaseFrac ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ALOGE ( \"b/26366256\" ) ; android_errorWriteLog ( 0x534e4554 , \"26366256\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3152\n\n```\nCWE-284 static int connect_to_db ( char * host , char * user , char * passwd ) { char buff [ 20 + FN_REFLEN ] ; DBUG_ENTER ( \"connect_to_db\" ) ; verbose_msg ( \"--<S2SV_blank>Connecting<S2SV_blank>to<S2SV_blank>%s...\\\\n\" , host ? host : \"localhost\" ) ; mysql_init ( & mysql_connection ) ; if ( opt_compress ) mysql_options ( & mysql_connection , MYSQL_OPT_COMPRESS , NullS ) ; <S2SV_StartBug> # ifdef HAVE_OPENSSL <S2SV_EndBug> if ( opt_use_ssl ) { mysql_ssl_set ( & mysql_connection , opt_ssl_key , opt_ssl_cert , opt_ssl_ca , opt_ssl_capath , opt_ssl_cipher ) ; mysql_options ( & mysql_connection , MYSQL_OPT_SSL_CRL , opt_ssl_crl ) ; mysql_options ( & mysql_connection , MYSQL_OPT_SSL_CRLPATH , opt_ssl_crlpath ) ; } mysql_options ( & mysql_connection , MYSQL_OPT_SSL_VERIFY_SERVER_CERT , ( char * ) & opt_ssl_verify_server_cert ) ; # endif if ( opt_protocol ) mysql_options ( & mysql_connection , MYSQL_OPT_PROTOCOL , ( char * ) & opt_protocol ) ; if ( opt_bind_addr ) mysql_options ( & mysql_connection , MYSQL_OPT_BIND , opt_bind_addr ) ; # if defined ( _WIN32 ) && ! defined ( EMBEDDED_LIBRARY ) if ( shared_memory_base_name ) mysql_options ( & mysql_connection , MYSQL_SHARED_MEMORY_BASE_NAME , shared_memory_base_name ) ; # endif mysql_options ( & mysql_connection , MYSQL_SET_CHARSET_NAME , default_charset ) ; if ( opt_plugin_dir && * opt_plugin_dir ) mysql_options ( & mysql_connection , MYSQL_PLUGIN_DIR , opt_plugin_dir ) ; if ( opt_default_auth && * opt_default_auth ) mysql_options ( & mysql_connection , MYSQL_DEFAULT_AUTH , opt_default_auth ) ; mysql_options ( & mysql_connection , MYSQL_OPT_CONNECT_ATTR_RESET , 0 ) ; mysql_options4 ( & mysql_connection , MYSQL_OPT_CONNECT_ATTR_ADD , \"program_name\" , \"mysqldump\" ) ; if ( ! ( mysql = mysql_real_connect ( & mysql_connection , host , user , passwd , NULL , opt_mysql_port , opt_mysql_unix_port , 0 ) ) ) { DB_error ( & mysql_connection , \"when<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>connect\" ) ; DBUG_RETURN ( 1 ) ; } if ( ( mysql_get_server_version ( & mysql_connection ) < 40100 ) || ( opt_compatible_mode & 3 ) ) { opt_set_charset = 0 ; server_supports_switching_charsets = FALSE ; } mysql -> reconnect = 0 ; my_snprintf ( buff , sizeof ( buff ) , \"/*!40100<S2SV_blank>SET<S2SV_blank>@@SQL_MODE=\\'%s\\'<S2SV_blank>*/\" , compatible_mode_normal_str ) ; if ( mysql_query_with_error_report ( mysql , 0 , buff ) ) DBUG_RETURN ( 1 ) ; if ( opt_tz_utc ) { my_snprintf ( buff , sizeof ( buff ) , \"/*!40103<S2SV_blank>SET<S2SV_blank>TIME_ZONE=\\'+00:00\\'<S2SV_blank>*/\" ) ; if ( mysql_query_with_error_report ( mysql , 0 , buff ) ) DBUG_RETURN ( 1 ) ; } DBUG_RETURN ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NullS ) ; SSL_SET_OPTIONS ( & mysql_connection ) ; <S2SV_ModEnd> if ( opt_protocol\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 <S2SV_StartBug> void unix_inflight ( struct file * fp ) <S2SV_EndBug> { struct sock * s = unix_get_socket ( fp ) ; spin_lock ( & unix_gc_lock ) ; if ( s ) { struct unix_sock * u = unix_sk ( s ) ; if ( atomic_long_inc_return ( & u -> inflight ) == 1 ) { BUG_ON ( ! list_empty ( & u -> link ) ) ; list_add_tail ( & u -> link , & gc_inflight_list ) ; } else { BUG_ON ( list_empty ( & u -> link ) ) ; } unix_tot_inflight ++ ; } <S2SV_StartBug> fp -> f_cred -> user -> unix_inflight ++ ; <S2SV_EndBug> spin_unlock ( & unix_gc_lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void unix_inflight ( struct user_struct * user , <S2SV_ModStart> ++ ; } <S2SV_ModEnd> user -> unix_inflight\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13030\n\n```\nCWE-125 static int pimv2_addr_print ( netdissect_options * ndo , <S2SV_StartBug> const u_char * bp , enum pimv2_addrtype at , int silent ) <S2SV_EndBug> { int af ; <S2SV_StartBug> int len , hdrlen ; <S2SV_EndBug> <S2SV_StartBug> ND_TCHECK ( bp [ 0 ] ) ; <S2SV_EndBug> if ( pimv2_addr_len == 0 ) { ND_TCHECK ( bp [ 1 ] ) ; switch ( bp [ 0 ] ) { case 1 : af = AF_INET ; <S2SV_StartBug> len = sizeof ( struct in_addr ) ; <S2SV_EndBug> break ; case 2 : af = AF_INET6 ; <S2SV_StartBug> len = sizeof ( struct in6_addr ) ; <S2SV_EndBug> break ; default : return - 1 ; } if ( bp [ 1 ] != 0 ) return - 1 ; hdrlen = 2 ; } else { <S2SV_StartBug> switch ( pimv2_addr_len ) { <S2SV_EndBug> case sizeof ( struct in_addr ) : af = AF_INET ; break ; case sizeof ( struct in6_addr ) : af = AF_INET6 ; break ; default : return - 1 ; break ; } <S2SV_StartBug> len = pimv2_addr_len ; <S2SV_EndBug> hdrlen = 0 ; } bp += hdrlen ; <S2SV_StartBug> switch ( at ) { <S2SV_EndBug> case pimv2_unicast : <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , len ) ; <S2SV_EndBug> if ( af == AF_INET ) { if ( ! silent ) ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , bp ) ) ) ; } else if ( af == AF_INET6 ) { if ( ! silent ) ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , bp ) ) ) ; } <S2SV_StartBug> return hdrlen + len ; <S2SV_EndBug> case pimv2_group : case pimv2_source : <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , len + 2 ) ; <S2SV_EndBug> if ( af == AF_INET ) { if ( ! silent ) { ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , bp + 2 ) ) ) ; if ( bp [ 1 ] != 32 ) ND_PRINT ( ( ndo , \"/%u\" , bp [ 1 ] ) ) ; } } else if ( af == AF_INET6 ) { if ( ! silent ) { ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , bp + 2 ) ) ) ; if ( bp [ 1 ] != 128 ) ND_PRINT ( ( ndo , \"/%u\" , bp [ 1 ] ) ) ; } } if ( bp [ 0 ] && ! silent ) { if ( at == pimv2_group ) { ND_PRINT ( ( ndo , \"(0x%02x)\" , bp [ 0 ] ) ) ; } else { ND_PRINT ( ( ndo , \"(%s%s%s\" , bp [ 0 ] & 0x04 ? \"S\" : \"\" , bp [ 0 ] & 0x02 ? \"W\" : \"\" , bp [ 0 ] & 0x01 ? \"R\" : \"\" ) ) ; if ( bp [ 0 ] & 0xf8 ) { ND_PRINT ( ( ndo , \"+0x%02x\" , bp [ 0 ] & 0xf8 ) ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; } } <S2SV_StartBug> return hdrlen + 2 + len ; <S2SV_EndBug> default : return - 1 ; } trunc : return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * bp , u_int len , <S2SV_ModStart> pimv2_addrtype at , u_int addr_len , <S2SV_ModStart> af ; int hdrlen ; if ( addr_len == 0 ) { if ( len < 2 ) goto trunc <S2SV_ModEnd> ; ND_TCHECK ( <S2SV_ModStart> ( bp [ <S2SV_ModEnd> 1 ] ) <S2SV_ModStart> = AF_INET ; addr_len = ( u_int ) <S2SV_ModEnd> sizeof ( struct <S2SV_ModStart> = AF_INET6 ; addr_len = ( u_int ) <S2SV_ModEnd> sizeof ( struct <S2SV_ModStart> { switch ( addr_len <S2SV_ModEnd> ) { case <S2SV_ModStart> break ; } <S2SV_ModEnd> hdrlen = 0 <S2SV_ModStart> += hdrlen ; len -= hdrlen ; <S2SV_ModStart> case pimv2_unicast : if ( len < addr_len ) goto trunc ; <S2SV_ModStart> 0 ] , addr_len <S2SV_ModEnd> ) ; if <S2SV_ModStart> return hdrlen + addr_len <S2SV_ModEnd> ; case pimv2_group <S2SV_ModStart> case pimv2_source : if ( len < addr_len + 2 ) goto trunc ; <S2SV_ModStart> 0 ] , addr_len <S2SV_ModEnd> + 2 ) <S2SV_ModStart> + 2 + addr_len <S2SV_ModEnd> ; default :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_read_data ( SCSIRequest * req ) { SCSIDiskReq * r = DO_UPCAST ( SCSIDiskReq , req , req ) ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; uint32_t n ; if ( r -> sector_count == ( uint32_t ) - 1 ) { DPRINTF ( \"Read<S2SV_blank>buf_len=%zd\\\\n\" , r -> iov . iov_len ) ; r -> sector_count = 0 ; scsi_req_data ( & r -> req , r -> iov . iov_len ) ; return ; } DPRINTF ( \"Read<S2SV_blank>sector_count=%d\\\\n\" , r -> sector_count ) ; if ( r -> sector_count == 0 ) { scsi_req_complete ( & r -> req , GOOD ) ; return ; } assert ( r -> req . aiocb == NULL ) ; if ( r -> req . cmd . mode == SCSI_XFER_TO_DEV ) { DPRINTF ( \"Data<S2SV_blank>transfer<S2SV_blank>direction<S2SV_blank>invalid\\\\n\" ) ; scsi_read_complete ( r , - EINVAL ) ; return ; } <S2SV_StartBug> n = r -> sector_count ; <S2SV_EndBug> if ( n > SCSI_DMA_BUF_SIZE / 512 ) n = SCSI_DMA_BUF_SIZE / 512 ; if ( s -> tray_open ) { scsi_read_complete ( r , - ENOMEDIUM ) ; } <S2SV_StartBug> r -> iov . iov_len = n * 512 ; <S2SV_EndBug> <S2SV_StartBug> qemu_iovec_init_external ( & r -> qiov , & r -> iov , 1 ) ; <S2SV_EndBug> bdrv_acct_start ( s -> bs , & r -> acct , n * BDRV_SECTOR_SIZE , BDRV_ACCT_READ ) ; <S2SV_StartBug> r -> req . aiocb = bdrv_aio_readv ( s -> bs , r -> sector , & r -> qiov , n , <S2SV_EndBug> scsi_read_complete , r ) ; if ( r -> req . aiocb == NULL ) { scsi_read_complete ( r , - EIO ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } <S2SV_ModEnd> if ( s <S2SV_ModStart> ) ; } n = scsi_init_iovec ( r ) ; bdrv_acct_start ( s -> bs , & r -> acct , n * BDRV_SECTOR_SIZE , BDRV_ACCT_READ ) ; r -> req . aiocb = bdrv_aio_readv ( s -> bs , r -> sector , <S2SV_ModEnd> & r -> <S2SV_ModStart> -> qiov , n , scsi_read_complete , r ) ; if ( <S2SV_ModEnd> r -> req <S2SV_ModStart> req . aiocb <S2SV_ModEnd> == NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9465\n\n```\nCWE-125 int _yr_scan_match_callback ( uint8_t * match_data , int32_t match_length , int flags , void * args ) { CALLBACK_ARGS * callback_args = ( CALLBACK_ARGS * ) args ; YR_STRING * string = callback_args -> string ; YR_MATCH * new_match ; int result = ERROR_SUCCESS ; int tidx = callback_args -> context -> tidx ; size_t match_offset = match_data - callback_args -> data ; <S2SV_StartBug> match_length += callback_args -> forward_matches ; <S2SV_EndBug> if ( callback_args -> full_word ) { if ( flags & RE_FLAGS_WIDE ) { if ( match_offset >= 2 && * ( match_data - 1 ) == 0 && isalnum ( * ( match_data - 2 ) ) ) return ERROR_SUCCESS ; if ( match_offset + match_length + 1 < callback_args -> data_size && * ( match_data + match_length + 1 ) == 0 && isalnum ( * ( match_data + match_length ) ) ) return ERROR_SUCCESS ; } else { if ( match_offset >= 1 && isalnum ( * ( match_data - 1 ) ) ) return ERROR_SUCCESS ; if ( match_offset + match_length < callback_args -> data_size && isalnum ( * ( match_data + match_length ) ) ) return ERROR_SUCCESS ; } } if ( STRING_IS_CHAIN_PART ( string ) ) { result = _yr_scan_verify_chained_string_match ( string , callback_args -> context , match_data , callback_args -> data_base , match_offset , match_length ) ; } else { if ( string -> matches [ tidx ] . count == 0 ) { FAIL_ON_ERROR ( yr_arena_write_data ( callback_args -> context -> matching_strings_arena , & string , sizeof ( string ) , NULL ) ) ; } FAIL_ON_ERROR ( yr_arena_allocate_memory ( callback_args -> context -> matches_arena , sizeof ( YR_MATCH ) , ( void * * ) & new_match ) ) ; new_match -> data_length = yr_min ( match_length , MAX_MATCH_DATA ) ; FAIL_ON_ERROR ( yr_arena_write_data ( callback_args -> context -> matches_arena , match_data , new_match -> data_length , ( void * * ) & new_match -> data ) ) ; if ( result == ERROR_SUCCESS ) { new_match -> base = callback_args -> data_base ; new_match -> offset = match_offset ; new_match -> match_length = match_length ; new_match -> prev = NULL ; new_match -> next = NULL ; FAIL_ON_ERROR ( _yr_scan_add_match_to_list ( new_match , & string -> matches [ tidx ] , STRING_IS_GREEDY_REGEXP ( string ) ) ) ; } } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> callback_args -> forward_matches ; assert ( match_offset + match_length <= callback_args -> data_size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2009-1194\n\n```\nCWE-189 void pango_glyph_string_set_size ( PangoGlyphString * string , gint new_len ) { g_return_if_fail ( new_len >= 0 ) ; while ( new_len > string -> space ) { if ( string -> space == 0 ) <S2SV_StartBug> string -> space = 1 ; <S2SV_EndBug> else <S2SV_StartBug> string -> space *= 2 ; <S2SV_EndBug> <S2SV_StartBug> if ( string -> space < 0 ) <S2SV_EndBug> { g_warning ( \"glyph<S2SV_blank>string<S2SV_blank>length<S2SV_blank>overflows<S2SV_blank>maximum<S2SV_blank>integer<S2SV_blank>size,<S2SV_blank>truncated\" ) ; <S2SV_StartBug> new_len = string -> space = G_MAXINT - 8 ; <S2SV_EndBug> } } string -> glyphs = g_realloc ( string -> glyphs , string -> space * sizeof ( PangoGlyphInfo ) ) ; string -> log_clusters = g_realloc ( string -> log_clusters , string -> space * sizeof ( gint ) ) ; string -> num_glyphs = new_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) { <S2SV_ModStart> -> space = 4 ; } else { const guint max_space = MIN ( G_MAXINT , G_MAXSIZE / MAX ( sizeof ( PangoGlyphInfo ) , sizeof ( gint ) ) ) ; guint more_space = ( guint ) <S2SV_ModEnd> string -> space <S2SV_ModStart> string -> space * <S2SV_ModEnd> 2 ; if <S2SV_ModStart> ; if ( more_space > max_space ) { more_space = max_space ; if ( ( guint ) new_len > max_space ) { g_error ( \"%s:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>glyph<S2SV_blank>string<S2SV_blank>of<S2SV_blank>length<S2SV_blank>%i\\\\n\" , G_STRLOC , new_len ) ; } } <S2SV_ModEnd> string -> space <S2SV_ModStart> -> space = more_space <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9077\n\n```\nCWE-000 static struct sock * dccp_v6_request_recv_sock ( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req ) { struct inet_request_sock * ireq = inet_rsk ( req ) ; struct ipv6_pinfo * newnp ; const struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct ipv6_txoptions * opt ; struct inet_sock * newinet ; struct dccp6_sock * newdp6 ; struct sock * newsk ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = dccp_v4_request_recv_sock ( sk , skb , req , dst , req_unhash , own_req ) ; if ( newsk == NULL ) return NULL ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newnp -> saddr = newsk -> sk_v6_rcv_saddr ; inet_csk ( newsk ) -> icsk_af_ops = & dccp_ipv6_mapped ; newsk -> sk_backlog_rcv = dccp_v4_do_rcv ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; <S2SV_StartBug> newnp -> mcast_oif = inet6_iif ( skb ) ; <S2SV_EndBug> newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; dccp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( ! dst ) { struct flowi6 fl6 ; dst = inet6_csk_route_req ( sk , & fl6 , req , IPPROTO_DCCP ) ; if ( ! dst ) goto out ; } newsk = dccp_create_openreq_child ( sk , req , skb ) ; if ( newsk == NULL ) goto out_nonewsk ; ip6_dst_store ( newsk , dst , NULL , NULL ) ; newsk -> sk_route_caps = dst -> dev -> features & ~ ( NETIF_F_IP_CSUM | NETIF_F_TSO ) ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newsk -> sk_v6_daddr = ireq -> ir_v6_rmt_addr ; newnp -> saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_v6_rcv_saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_bound_dev_if = ireq -> ir_iif ; newinet -> inet_opt = NULL ; newnp -> rxopt . all = np -> rxopt . all ; <S2SV_StartBug> newnp -> pktoptions = NULL ; <S2SV_EndBug> newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; opt = ireq -> ipv6_opt ; if ( ! opt ) opt = rcu_dereference ( np -> opt ) ; if ( opt ) { opt = ipv6_dup_options ( newsk , opt ) ; RCU_INIT_POINTER ( newnp -> opt , opt ) ; } inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( opt ) inet_csk ( newsk ) -> icsk_ext_hdr_len = opt -> opt_nflen + opt -> opt_flen ; dccp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; if ( __inet_inherit_port ( sk , newsk ) < 0 ) { inet_csk_prepare_forced_close ( newsk ) ; dccp_done ( newsk ) ; goto out ; } * own_req = inet_ehash_nolisten ( newsk , req_to_sk ( req_unhash ) ) ; if ( * own_req && ireq -> pktopts ) { newnp -> pktoptions = skb_clone ( ireq -> pktopts , GFP_ATOMIC ) ; consume_skb ( ireq -> pktopts ) ; ireq -> pktopts = NULL ; if ( newnp -> pktoptions ) skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } return newsk ; out_overflow : __NET_INC_STATS ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : __NET_INC_STATS ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; newnp -> ipv6_mc_list = NULL ; newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL ; newnp -> <S2SV_ModStart> ; newnp -> ipv6_mc_list = NULL ; newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL ; newnp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20760\n\n```\nCWE-787 char * gf_text_get_utf8_line ( char * szLine , u32 lineSize , FILE * txt_in , s32 unicode_type ) { u32 i , j , len ; char * sOK ; char szLineConv [ 1024 ] ; unsigned short * sptr ; memset ( szLine , 0 , sizeof ( char ) * lineSize ) ; sOK = fgets ( szLine , lineSize , txt_in ) ; if ( ! sOK ) return NULL ; if ( unicode_type <= 1 ) { j = 0 ; len = ( u32 ) strlen ( szLine ) ; for ( i = 0 ; i < len ; i ++ ) { if ( ! unicode_type && ( szLine [ i ] & 0x80 ) ) { if ( ( szLine [ i + 1 ] & 0xc0 ) != 0x80 ) { szLineConv [ j ] = 0xc0 | ( ( szLine [ i ] >> 6 ) & 0x3 ) ; j ++ ; szLine [ i ] &= 0xbf ; } else if ( ( szLine [ i ] & 0xe0 ) == 0xc0 ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else if ( ( szLine [ i ] & 0xf0 ) == 0xe0 ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else if ( ( szLine [ i ] & 0xf8 ) == 0xf0 ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { i += 1 ; continue ; } } szLineConv [ j ] = szLine [ i ] ; j ++ ; } szLineConv [ j ] = 0 ; strcpy ( szLine , szLineConv ) ; return sOK ; } # ifdef GPAC_BIG_ENDIAN if ( unicode_type == 3 ) { # else if ( unicode_type == 2 ) { # endif i = 0 ; while ( 1 ) { char c ; if ( ! szLine [ i ] && ! szLine [ i + 1 ] ) break ; c = szLine [ i + 1 ] ; szLine [ i + 1 ] = szLine [ i ] ; szLine [ i ] = c ; i += 2 ; } } sptr = ( u16 * ) szLine ; i = ( u32 ) gf_utf8_wcstombs ( szLineConv , 1024 , ( const unsigned short * * ) & sptr ) ; <S2SV_StartBug> szLineConv [ i ] = 0 ; <S2SV_EndBug> strcpy ( szLine , szLineConv ) ; if ( unicode_type == 3 ) fgetc ( txt_in ) ; return sOK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sptr ) ; if ( i >= ( u32 ) ARRAY_LENGTH ( szLineConv ) ) return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3741\n\n```\nCWE-20 WORD32 ih264d_mark_err_slice_skip ( dec_struct_t * ps_dec , WORD32 num_mb_skip , UWORD8 u1_is_idr_slice , UWORD16 u2_frame_num , pocstruct_t * ps_cur_poc , WORD32 prev_slice_err ) { WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 ; UWORD32 u1_mb_idx = ps_dec -> u1_mb_idx ; UWORD32 i2_mb_skip_run ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD32 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end ; UWORD32 u1_tfr_n_mb ; UWORD32 u1_decode_nmb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD16 u2_total_mbs_coded ; UWORD32 u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; parse_part_params_t * ps_part_info ; WORD32 ret ; if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return 0 ; } if ( prev_slice_err == 1 ) { ps_dec -> ps_cur_slice -> u2_frame_num = u2_frame_num ; if ( ! ps_dec -> u1_first_slice_in_stream ) { ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , ps_dec -> ps_cur_slice -> u2_frame_num ) ; ps_dec -> s_cur_pic_poc . u2_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; } { WORD32 i , j , poc = 0 ; ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = 0 ; ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; if ( ps_dec -> ps_cur_pic != NULL ) poc = ps_dec -> ps_cur_pic -> i4_poc + 2 ; j = 0 ; for ( i = 0 ; i < MAX_NUM_PIC_PARAMS ; i ++ ) if ( ps_dec -> ps_pps [ i ] . u1_is_valid == TRUE ) j = i ; { <S2SV_StartBug> ret = ih264d_start_of_pic ( ps_dec , poc , ps_cur_poc , <S2SV_EndBug> ps_dec -> ps_cur_slice -> u2_frame_num , & ps_dec -> ps_pps [ j ] ) ; if ( ret != OK ) { return ret ; } } ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ 0 ] -> u1_pic_buf_id = 0 ; ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } } else { dec_slice_struct_t * ps_parse_cur_slice ; ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; if ( ps_dec -> u1_slice_header_done && ps_parse_cur_slice == ps_dec -> ps_parse_cur_slice ) { u1_num_mbs = ps_dec -> u4_num_mbs_cur_nmb ; if ( u1_num_mbs ) { ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs - 1 ; } else { if ( ps_dec -> u1_separate_parse ) { ps_cur_mb_info = ps_dec -> ps_nmb_info - 1 ; } else { ps_cur_mb_info = ps_dec -> ps_nmb_info + ps_dec -> u4_num_mbs_prev_nmb - 1 ; } } ps_dec -> u2_mby = ps_cur_mb_info -> u2_mby ; ps_dec -> u2_mbx = ps_cur_mb_info -> u2_mbx ; ps_dec -> u1_mb_ngbr_availablity = ps_cur_mb_info -> u1_mb_ngbr_availablity ; ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_prev_mb_parse_tu_coeff_data ; ps_dec -> u2_cur_mb_addr -- ; ps_dec -> i4_submb_ofst -= SUB_BLK_SIZE ; if ( u1_num_mbs ) { if ( ps_dec -> u1_pr_sl_type == P_SLICE || ps_dec -> u1_pr_sl_type == B_SLICE ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = 1 ; u1_tfr_n_mb = 1 ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; ps_dec -> u1_mb_idx = 0 ; ps_dec -> u4_num_mbs_cur_nmb = 0 ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; return 0 ; } ps_dec -> u2_cur_slice_num ++ ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; ps_dec -> ps_parse_cur_slice ++ ; } else { ps_dec -> ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; } } { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MAX_FRAMES ; if ( ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) && ( 0 == ps_dec -> i4_display_delay ) ) { num_entries = 1 ; } num_entries = ( ( 2 * num_entries ) + 1 ) ; if ( BASE_PROFILE_IDC != ps_dec -> ps_cur_sps -> u1_profile_idc ) { num_entries *= 2 ; } size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( volatile void * * ) pu1_buf ; } ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = ps_dec -> u2_total_mbs_coded << u1_mbaff ; <S2SV_StartBug> if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) <S2SV_EndBug> ps_dec -> u2_prv_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> u2_total_mbs_coded << u1_mbaff ; ps_dec -> ps_parse_cur_slice -> u2_log2Y_crwd = ps_dec -> ps_cur_slice -> u2_log2Y_crwd ; if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_parse_cur_slice -> slice_type = P_SLICE ; ps_dec -> pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u1_slice_header_done = 2 ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; u1_num_mbs = u1_mb_idx ; u1_slice_end = 0 ; u1_tfr_n_mb = 0 ; u1_decode_nmb = 0 ; u1_num_mbsNby2 = 0 ; i2_cur_mb_addr = ps_dec -> u2_total_mbs_coded ; i2_mb_skip_run = num_mb_skip ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) break ; ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; if ( u1_mbaff ) ih264d_get_mb_info_cavlc_mbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; else ih264d_get_mb_info_cavlc_nonmbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) { ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; } ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> u1_sub_mb_num = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_mb_mc_mode = PRED_16x16 ; ps_cur_mb_info -> u1_cbp = 0 ; ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CAVLC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; i2_mb_skip_run -- ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; u1_num_mbs ++ ; u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ! i2_mb_skip_run ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; if ( u1_tfr_n_mb ) u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice ; H264_DEC_DEBUG_PRINT ( \"Mbs<S2SV_blank>in<S2SV_blank>slice:<S2SV_blank>%d\\\\n\" , ps_dec -> ps_cur_slice -> u4_mbs_in_slice ) ; ps_dec -> u2_cur_slice_num ++ ; if ( ps_dec -> u4_first_slice_in_pic != 0 ) ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ; { ps_dec -> ps_cur_slice -> u1_bottom_field_flag = 0 ; ps_dec -> ps_cur_slice -> u1_field_pic_flag = 0 ; ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_cur_slice -> u1_nal_ref_idc = 1 ; ps_dec -> ps_cur_slice -> u1_nal_unit_type = 1 ; <S2SV_ModStart> << u1_mbaff ; ps_dec -> ps_cur_slice -> i1_slice_alpha_c0_offset = 0 ; ps_dec -> ps_cur_slice -> i1_slice_beta_offset = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 int main_configure ( char * arg1 , char * arg2 ) { int cmdline_status ; <S2SV_StartBug> cmdline_status = options_cmdline ( arg1 , arg2 ) ; <S2SV_EndBug> if ( cmdline_status ) <S2SV_StartBug> return cmdline_status ; <S2SV_EndBug> options_apply ( ) ; str_canary_init ( ) ; log_open ( SINK_SYSLOG ) ; if ( bind_ports ( ) ) <S2SV_StartBug> return 1 ; <S2SV_EndBug> # ifdef HAVE_CHROOT if ( change_root ( ) ) <S2SV_StartBug> return 1 ; <S2SV_EndBug> # endif if ( drop_privileges ( 1 ) ) <S2SV_StartBug> return 1 ; <S2SV_EndBug> if ( log_open ( SINK_OUTFILE ) ) <S2SV_StartBug> return 1 ; <S2SV_EndBug> # ifndef USE_FORK num_clients = 0 ; # endif log_flush ( LOG_MODE_CONFIGURED ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int cmdline_status ; log_flush ( LOG_MODE_BUFFER ) ; <S2SV_ModStart> ( cmdline_status ) { log_flush ( LOG_MODE_ERROR ) ; return cmdline_status ; } options_free ( 1 ) <S2SV_ModEnd> ; options_apply ( <S2SV_ModStart> ( ) ) { unbind_ports ( ) ; options_free ( 1 ) ; options_defaults ( ) ; options_apply ( ) ; log_flush ( LOG_MODE_ERROR ) ; return 1 ; } <S2SV_ModEnd> # ifdef HAVE_CHROOT <S2SV_ModStart> ( ) ) { log_flush ( LOG_MODE_ERROR ) ; return 1 ; } <S2SV_ModEnd> # endif if <S2SV_ModStart> 1 ) ) { log_flush ( LOG_MODE_ERROR ) ; return 1 ; } <S2SV_ModEnd> if ( log_open <S2SV_ModStart> SINK_OUTFILE ) ) { log_flush ( LOG_MODE_ERROR ) ; return 1 ; } <S2SV_ModEnd> # ifndef USE_FORK\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8688\n\n```\nCWE-125 static ssize_t next_line ( struct archive_read * a , const char * * b , ssize_t * avail , ssize_t * ravail , ssize_t * nl ) { ssize_t len ; int quit ; quit = 0 ; if ( * avail == 0 ) { * nl = 0 ; len = 0 ; } else len = get_line_size ( * b , * avail , nl ) ; while ( * nl == 0 && len == * avail && ! quit ) { ssize_t diff = * ravail - * avail ; size_t nbytes_req = ( * ravail + 1023 ) & ~ 1023U ; ssize_t tested ; if ( nbytes_req < ( size_t ) * ravail + 160 ) nbytes_req <<= 1 ; * b = __archive_read_ahead ( a , nbytes_req , avail ) ; if ( * b == NULL ) { if ( * ravail >= * avail ) return ( 0 ) ; * b = __archive_read_ahead ( a , * avail , avail ) ; quit = 1 ; } * ravail = * avail ; * b += diff ; * avail -= diff ; tested = len ; <S2SV_StartBug> len = get_line_size ( * b , * avail , nl ) ; <S2SV_EndBug> if ( len >= 0 ) len += tested ; } return ( len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( * b + len , * avail - len <S2SV_ModEnd> , nl )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2909\n\n```\nCWE-200 static int do_devinfo_ioctl ( struct comedi_device * dev , struct comedi_devinfo __user * arg , struct file * file ) { struct comedi_devinfo devinfo ; const unsigned minor = iminor ( file -> f_dentry -> d_inode ) ; struct comedi_device_file_info * dev_file_info = comedi_get_device_file_info ( minor ) ; struct comedi_subdevice * read_subdev = comedi_get_read_subdevice ( dev_file_info ) ; struct comedi_subdevice * write_subdev = comedi_get_write_subdevice ( dev_file_info ) ; memset ( & devinfo , 0 , sizeof ( devinfo ) ) ; devinfo . version_code = COMEDI_VERSION_CODE ; devinfo . n_subdevs = dev -> n_subdevices ; <S2SV_StartBug> memcpy ( devinfo . driver_name , dev -> driver -> driver_name , COMEDI_NAMELEN ) ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( devinfo . board_name , dev -> board_name , COMEDI_NAMELEN ) ; <S2SV_EndBug> if ( read_subdev ) devinfo . read_subdevice = read_subdev - dev -> subdevices ; else devinfo . read_subdevice = - 1 ; if ( write_subdev ) devinfo . write_subdevice = write_subdev - dev -> subdevices ; else devinfo . write_subdevice = - 1 ; if ( copy_to_user ( arg , & devinfo , sizeof ( struct comedi_devinfo ) ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> n_subdevices ; strlcpy <S2SV_ModEnd> ( devinfo . <S2SV_ModStart> COMEDI_NAMELEN ) ; strlcpy <S2SV_ModEnd> ( devinfo .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_dequant_idct_add_uv_block_c ( short * q , short * dq , unsigned char * dstu , unsigned char * dstv , int stride , char * eobs ) { int i , j ; for ( i = 0 ; i < 2 ; i ++ ) { for ( j = 0 ; j < 2 ; j ++ ) { if ( * eobs ++ > 1 ) vp8_dequant_idct_add_c ( q , dq , dstu , stride ) ; else { vp8_dc_only_idct_add_c ( q [ 0 ] * dq [ 0 ] , dstu , stride , dstu , stride ) ; <S2SV_StartBug> vpx_memset ( q , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } q += 16 ; dstu += 4 ; } dstu += 4 * stride - 8 ; } for ( i = 0 ; i < 2 ; i ++ ) { for ( j = 0 ; j < 2 ; j ++ ) { if ( * eobs ++ > 1 ) vp8_dequant_idct_add_c ( q , dq , dstv , stride ) ; else { vp8_dc_only_idct_add_c ( q [ 0 ] * dq [ 0 ] , dstv , stride , dstv , stride ) ; <S2SV_StartBug> vpx_memset ( q , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } q += 16 ; dstv += 4 ; } dstv += 4 * stride - 8 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q , <S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static INLINE int cost_coeffs ( MACROBLOCK * x , <S2SV_EndBug> int plane , int block , ENTROPY_CONTEXT * A , ENTROPY_CONTEXT * L , TX_SIZE tx_size , const int16_t * scan , const int16_t * nb , int use_fast_coef_costing ) { MACROBLOCKD * const xd = & x -> e_mbd ; MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; const struct macroblock_plane * p = & x -> plane [ plane ] ; const struct macroblockd_plane * pd = & xd -> plane [ plane ] ; const PLANE_TYPE type = pd -> plane_type ; const int16_t * band_count = & band_counts [ tx_size ] [ 1 ] ; const int eob = p -> eobs [ block ] ; <S2SV_StartBug> const int16_t * const qcoeff = BLOCK_OFFSET ( p -> qcoeff , block ) ; <S2SV_EndBug> unsigned int ( * token_costs ) [ 2 ] [ COEFF_CONTEXTS ] [ ENTROPY_TOKENS ] = x -> token_costs [ tx_size ] [ type ] [ is_inter_block ( mbmi ) ] ; uint8_t token_cache [ 32 * 32 ] ; int pt = combine_entropy_contexts ( * A , * L ) ; <S2SV_StartBug> int c , cost ; <S2SV_EndBug> assert ( type == PLANE_TYPE_Y ? mbmi -> tx_size == tx_size <S2SV_StartBug> : get_uv_tx_size ( mbmi ) == tx_size ) ; <S2SV_EndBug> if ( eob == 0 ) { cost = token_costs [ 0 ] [ 0 ] [ pt ] [ EOB_TOKEN ] ; c = 0 ; } else { int band_left = * band_count ++ ; int v = qcoeff [ 0 ] ; <S2SV_StartBug> int prev_t = vp9_dct_value_tokens_ptr [ v ] . token ; <S2SV_EndBug> <S2SV_StartBug> cost = ( * token_costs ) [ 0 ] [ pt ] [ prev_t ] + vp9_dct_value_cost_ptr [ v ] ; <S2SV_EndBug> token_cache [ 0 ] = vp9_pt_energy_class [ prev_t ] ; ++ token_costs ; for ( c = 1 ; c < eob ; c ++ ) { const int rc = scan [ c ] ; <S2SV_StartBug> int t ; <S2SV_EndBug> v = qcoeff [ rc ] ; <S2SV_StartBug> t = vp9_dct_value_tokens_ptr [ v ] . token ; <S2SV_EndBug> if ( use_fast_coef_costing ) { <S2SV_StartBug> cost += ( * token_costs ) [ ! prev_t ] [ ! prev_t ] [ t ] + vp9_dct_value_cost_ptr [ v ] ; <S2SV_EndBug> } else { pt = get_coef_context ( nb , token_cache , c ) ; <S2SV_StartBug> cost += ( * token_costs ) [ ! prev_t ] [ pt ] [ t ] + vp9_dct_value_cost_ptr [ v ] ; <S2SV_EndBug> token_cache [ rc ] = vp9_pt_energy_class [ t ] ; } prev_t = t ; if ( ! -- band_left ) { band_left = * band_count ++ ; ++ token_costs ; } } if ( band_left ) { if ( use_fast_coef_costing ) { cost += ( * token_costs ) [ 0 ] [ ! prev_t ] [ EOB_TOKEN ] ; } else { pt = get_coef_context ( nb , token_cache , c ) ; cost += ( * token_costs ) [ 0 ] [ pt ] [ EOB_TOKEN ] ; } } } * A = * L = ( c > 0 ) ; return cost ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static <S2SV_ModEnd> int cost_coeffs ( <S2SV_ModStart> ] ; const tran_low_t <S2SV_ModEnd> * const qcoeff <S2SV_ModStart> , cost ; # if CONFIG_VP9_HIGHBITDEPTH const int16_t * cat6_high_cost = vp9_get_high_cost_table ( xd -> bd ) ; # else const int16_t * cat6_high_cost = vp9_get_high_cost_table ( 8 ) ; # endif <S2SV_ModStart> get_uv_tx_size ( mbmi , pd <S2SV_ModStart> 0 ] ; int16_t prev_t ; EXTRABIT e ; vp9_get_token_extra ( v , & prev_t , & e ) <S2SV_ModEnd> ; cost = <S2SV_ModStart> prev_t ] + vp9_get_cost ( prev_t , e , cat6_high_cost ) <S2SV_ModEnd> ; token_cache [ <S2SV_ModStart> c ] ; int16_t <S2SV_ModEnd> t ; v <S2SV_ModStart> rc ] ; vp9_get_token_extra ( v , & t , & e ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> t ] + vp9_get_cost ( t , e , cat6_high_cost ) <S2SV_ModEnd> ; } else <S2SV_ModStart> t ] + vp9_get_cost ( t , e , cat6_high_cost ) <S2SV_ModEnd> ; token_cache [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11815\n\n```\nCWE-362 static void rds_tcp_kill_sock ( struct net * net ) { struct rds_tcp_connection * tc , * _tc ; LIST_HEAD ( tmp_list ) ; struct rds_tcp_net * rtn = net_generic ( net , rds_tcp_netid ) ; struct socket * lsock = rtn -> rds_tcp_listen_sock ; rtn -> rds_tcp_listen_sock = NULL ; rds_tcp_listen_stop ( lsock , & rtn -> rds_tcp_accept_w ) ; spin_lock_irq ( & rds_tcp_conn_lock ) ; list_for_each_entry_safe ( tc , _tc , & rds_tcp_conn_list , t_tcp_node ) { struct net * c_net = read_pnet ( & tc -> t_cpath -> cp_conn -> c_net ) ; <S2SV_StartBug> if ( net != c_net || ! tc -> t_sock ) <S2SV_EndBug> continue ; if ( ! list_has_conn ( & tmp_list , tc -> t_cpath -> cp_conn ) ) { list_move_tail ( & tc -> t_tcp_node , & tmp_list ) ; } else { list_del ( & tc -> t_tcp_node ) ; tc -> t_tcp_node_detached = true ; } } spin_unlock_irq ( & rds_tcp_conn_lock ) ; list_for_each_entry_safe ( tc , _tc , & tmp_list , t_tcp_node ) rds_conn_destroy ( tc -> t_cpath -> cp_conn ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> net != c_net <S2SV_ModEnd> ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6271\n\n```\nCWE-254 int main ( int argc , char * argv [ ] ) { int i , fails_count = 0 ; CU_pSuite cryptoUtilsTestSuite , parserTestSuite ; CU_pSuite * suites [ ] = { & cryptoUtilsTestSuite , & parserTestSuite , NULL } ; if ( argc > 1 ) { if ( argv [ 1 ] [ 0 ] == '-' ) { if ( strcmp ( argv [ 1 ] , \"-verbose\" ) == 0 ) { verbose = 1 ; } else { printf ( \"Usage:\\\\n<S2SV_blank>%s<S2SV_blank>[-verbose]<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>extensive<S2SV_blank>logging\\\\n\" , argv [ 0 ] ) ; return 1 ; } } else { printf ( \"Usage:\\\\n<S2SV_blank>%s<S2SV_blank>[-verbose]<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>extensive<S2SV_blank>logging\\\\n\" , argv [ 0 ] ) ; return 1 ; } } # ifdef HAVE_LIBXML2 xmlInitParser ( ) ; # endif if ( CUE_SUCCESS != CU_initialize_registry ( ) ) { return CU_get_error ( ) ; } cryptoUtilsTestSuite = CU_add_suite ( \"Bzrtp<S2SV_blank>Crypto<S2SV_blank>Utils\" , NULL , NULL ) ; CU_add_test ( cryptoUtilsTestSuite , \"zrtpKDF\" , test_zrtpKDF ) ; CU_add_test ( cryptoUtilsTestSuite , \"CRC32\" , test_CRC32 ) ; CU_add_test ( cryptoUtilsTestSuite , \"algo<S2SV_blank>agreement\" , test_algoAgreement ) ; CU_add_test ( cryptoUtilsTestSuite , \"context<S2SV_blank>algo<S2SV_blank>setter<S2SV_blank>and<S2SV_blank>getter\" , test_algoSetterGetter ) ; CU_add_test ( cryptoUtilsTestSuite , \"adding<S2SV_blank>mandatory<S2SV_blank>crypto<S2SV_blank>algorithms<S2SV_blank>if<S2SV_blank>needed\" , test_addMandatoryCryptoTypesIfNeeded ) ; parserTestSuite = CU_add_suite ( \"Bzrtp<S2SV_blank>ZRTP<S2SV_blank>Packet<S2SV_blank>Parser\" , NULL , NULL ) ; CU_add_test ( parserTestSuite , \"Parse\" , test_parser ) ; <S2SV_StartBug> CU_add_test ( parserTestSuite , \"Parse<S2SV_blank>Exchange\" , test_parserComplete ) ; <S2SV_EndBug> CU_add_test ( parserTestSuite , \"State<S2SV_blank>machine\" , test_stateMachine ) ; for ( i = 0 ; suites [ i ] ; i ++ ) { CU_basic_run_suite ( * suites [ i ] ) ; fails_count += CU_get_number_of_tests_failed ( ) ; } CU_cleanup_registry ( ) ; # ifdef HAVE_LIBXML2 xmlCleanupParser ( ) ; # endif return ( fails_count == 0 ? 0 : 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( parserTestSuite , \"Parse<S2SV_blank>hvi<S2SV_blank>check<S2SV_blank>fail\" , test_parser_hvi ) ; CU_add_test ( parserTestSuite ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> void jas_matrix_bindsub ( jas_matrix_t * mat0 , jas_matrix_t * mat1 , int r0 , <S2SV_EndBug> int c0 , int r1 , int c1 ) { <S2SV_StartBug> int i ; <S2SV_EndBug> if ( mat0 -> data_ ) { if ( ! ( mat0 -> flags_ & JAS_MATRIX_REF ) ) { jas_free ( mat0 -> data_ ) ; } mat0 -> data_ = 0 ; mat0 -> datasize_ = 0 ; } if ( mat0 -> rows_ ) { jas_free ( mat0 -> rows_ ) ; mat0 -> rows_ = 0 ; } mat0 -> flags_ |= JAS_MATRIX_REF ; mat0 -> numrows_ = r1 - r0 + 1 ; mat0 -> numcols_ = c1 - c0 + 1 ; mat0 -> maxrows_ = mat0 -> numrows_ ; if ( ! ( mat0 -> rows_ = jas_alloc2 ( mat0 -> maxrows_ , sizeof ( jas_seqent_t * ) ) ) ) { abort ( ) ; } for ( i = 0 ; i < mat0 -> numrows_ ; ++ i ) { mat0 -> rows_ [ i ] = mat1 -> rows_ [ r0 + i ] + c0 ; } mat0 -> xstart_ = mat1 -> xstart_ + c0 ; mat0 -> ystart_ = mat1 -> ystart_ + r0 ; mat0 -> xend_ = mat0 -> xstart_ + mat0 -> numcols_ ; mat0 -> yend_ = mat0 -> ystart_ + mat0 -> numrows_ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * mat1 , jas_matind_t r0 , jas_matind_t c0 , jas_matind_t r1 , jas_matind_t <S2SV_ModEnd> c1 ) { <S2SV_ModStart> c1 ) { jas_matind_t <S2SV_ModEnd> i ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3235\n\n```\nCWE-200 static int recv_stream ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t buf_len , int flags ) { struct sock * sk = sock -> sk ; struct tipc_port * tport = tipc_sk_port ( sk ) ; struct sk_buff * buf ; struct tipc_msg * msg ; long timeout ; unsigned int sz ; int sz_to_copy , target , needed ; int sz_copied = 0 ; u32 err ; int res = 0 ; if ( unlikely ( ! buf_len ) ) return - EINVAL ; lock_sock ( sk ) ; if ( unlikely ( ( sock -> state == SS_UNCONNECTED ) || ( sock -> state == SS_CONNECTING ) ) ) { res = - ENOTCONN ; goto exit ; <S2SV_StartBug> } <S2SV_EndBug> target = sock_rcvlowat ( sk , flags & MSG_WAITALL , buf_len ) ; timeout = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; restart : while ( skb_queue_empty ( & sk -> sk_receive_queue ) ) { if ( sock -> state == SS_DISCONNECTING ) { res = - ENOTCONN ; goto exit ; } if ( timeout <= 0L ) { res = timeout ? timeout : - EWOULDBLOCK ; goto exit ; } release_sock ( sk ) ; timeout = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , tipc_rx_ready ( sock ) , timeout ) ; lock_sock ( sk ) ; } buf = skb_peek ( & sk -> sk_receive_queue ) ; msg = buf_msg ( buf ) ; sz = msg_data_sz ( msg ) ; err = msg_errcode ( msg ) ; if ( ( ! sz ) && ( ! err ) ) { advance_rx_queue ( sk ) ; goto restart ; } if ( sz_copied == 0 ) { set_orig_addr ( m , msg ) ; res = anc_data_recv ( m , msg , tport ) ; if ( res ) goto exit ; } if ( ! err ) { u32 offset = ( u32 ) ( unsigned long ) ( TIPC_SKB_CB ( buf ) -> handle ) ; sz -= offset ; needed = ( buf_len - sz_copied ) ; sz_to_copy = ( sz <= needed ) ? sz : needed ; res = skb_copy_datagram_iovec ( buf , msg_hdr_sz ( msg ) + offset , m -> msg_iov , sz_to_copy ) ; if ( res ) goto exit ; sz_copied += sz_to_copy ; if ( sz_to_copy < sz ) { if ( ! ( flags & MSG_PEEK ) ) TIPC_SKB_CB ( buf ) -> handle = ( void * ) ( unsigned long ) ( offset + sz_to_copy ) ; goto exit ; } } else { if ( sz_copied != 0 ) goto exit ; if ( ( err == TIPC_CONN_SHUTDOWN ) || m -> msg_control ) res = 0 ; else res = - ECONNRESET ; } if ( likely ( ! ( flags & MSG_PEEK ) ) ) { if ( unlikely ( ++ tport -> conn_unacked >= TIPC_FLOW_CONTROL_WIN ) ) tipc_acknowledge ( tport -> ref , tport -> conn_unacked ) ; advance_rx_queue ( sk ) ; } if ( ( sz_copied < buf_len ) && ( ! skb_queue_empty ( & sk -> sk_receive_queue ) || ( sz_copied < target ) ) && ( ! ( flags & MSG_PEEK ) ) && ( ! err ) ) goto restart ; exit : release_sock ( sk ) ; return sz_copied ? sz_copied : res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exit ; } m -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9755\n\n```\nCWE-787 static unsigned int ipv6_defrag ( void * priv , struct sk_buff * skb , const struct nf_hook_state * state ) { int err ; # if IS_ENABLED ( CONFIG_NF_CONNTRACK ) if ( skb -> nfct && ! nf_ct_is_template ( ( struct nf_conn * ) skb -> nfct ) ) return NF_ACCEPT ; # endif err = nf_ct_frag6_gather ( state -> net , skb , nf_ct6_defrag_user ( state -> hook , skb ) ) ; if ( err == - EINPROGRESS ) return NF_STOLEN ; <S2SV_StartBug> return NF_ACCEPT ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NF_STOLEN ; return err == 0 ? NF_ACCEPT : NF_DROP <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t httpClientParseHeaderField ( HttpClientContext * context , char_t * line , size_t length ) { error_t error ; char_t * name ; size_t nameLen ; char_t * value ; size_t valueLen ; char_t * separator ; line [ length ] = '\\\\0' ; TRACE_DEBUG ( \"%s\\\\r\\\\n\" , line ) ; error = httpCheckCharset ( line , length , HTTP_CHARSET_TEXT ) ; if ( error ) return error ; if ( line [ 0 ] == '<S2SV_blank>' || line [ 0 ] == '\\\\t' ) { if ( context -> bufferPos == 0 ) return ERROR_INVALID_SYNTAX ; value = strTrimWhitespace ( line ) ; valueLen = osStrlen ( value ) ; if ( valueLen > 0 ) { context -> buffer [ context -> bufferPos - 1 ] = '<S2SV_blank>' ; osMemmove ( context -> buffer + context -> bufferPos , value , valueLen + 1 ) ; context -> bufferLen = context -> bufferPos + valueLen + 1 ; } } else { <S2SV_StartBug> separator = strchr ( line , ':' ) ; <S2SV_EndBug> if ( separator == NULL ) return ERROR_INVALID_SYNTAX ; * separator = '\\\\0' ; name = strTrimWhitespace ( line ) ; value = strTrimWhitespace ( separator + 1 ) ; nameLen = osStrlen ( name ) ; valueLen = osStrlen ( value ) ; if ( nameLen == 0 ) return ERROR_INVALID_SYNTAX ; if ( ! osStrcasecmp ( name , \"Connection\" ) ) { httpClientParseConnectionField ( context , value ) ; } else if ( ! osStrcasecmp ( name , \"Transfer-Encoding\" ) ) { httpClientParseTransferEncodingField ( context , value ) ; } else if ( ! osStrcasecmp ( name , \"Content-Length\" ) ) { httpClientParseContentLengthField ( context , value ) ; } # if ( HTTP_CLIENT_AUTH_SUPPORT == ENABLED ) else if ( ! osStrcasecmp ( name , \"WWW-Authenticate\" ) ) { httpClientParseWwwAuthenticateField ( context , value ) ; } # endif else { } osMemmove ( context -> buffer + context -> bufferPos , name , nameLen + 1 ) ; osMemmove ( context -> buffer + context -> bufferPos + nameLen + 1 , value , valueLen + 1 ) ; context -> bufferLen = context -> bufferPos + nameLen + valueLen + 2 ; } context -> bufferPos = context -> bufferLen ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { separator = osStrchr <S2SV_ModEnd> ( line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16228\n\n```\nCWE-125 static int print_prefix ( netdissect_options * ndo , const u_char * prefix , u_int max_length ) { int plenbytes ; char buf [ sizeof ( \"xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx::/128\" ) ] ; if ( prefix [ 0 ] >= 96 && max_length >= IPV4_MAPPED_HEADING_LEN + 1 && is_ipv4_mapped_address ( & prefix [ 1 ] ) ) { struct in_addr addr ; u_int plen ; plen = prefix [ 0 ] - 96 ; if ( 32 < plen ) return - 1 ; max_length -= 1 ; memset ( & addr , 0 , sizeof ( addr ) ) ; plenbytes = ( plen + 7 ) / 8 ; if ( max_length < ( u_int ) plenbytes + IPV4_MAPPED_HEADING_LEN ) return - 3 ; memcpy ( & addr , & prefix [ 1 + IPV4_MAPPED_HEADING_LEN ] , plenbytes ) ; if ( plen % 8 ) { ( ( u_char * ) & addr ) [ plenbytes - 1 ] &= ( ( 0xff00 >> ( plen % 8 ) ) & 0xff ) ; } snprintf ( buf , sizeof ( buf ) , \"%s/%d\" , ipaddr_string ( ndo , & addr ) , plen ) ; plenbytes += 1 + IPV4_MAPPED_HEADING_LEN ; } else { plenbytes = decode_prefix6 ( ndo , prefix , max_length , buf , sizeof ( buf ) ) ; <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , buf ) ) ; return plenbytes ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( plenbytes < 0 ) return plenbytes ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14363\n\n```\nCWE-22 static int pop_fetch_message ( struct Context * ctx , struct Message * msg , int msgno ) { void * uidl = NULL ; char buf [ LONG_STRING ] ; char path [ PATH_MAX ] ; struct Progress progressbar ; struct PopData * pop_data = ( struct PopData * ) ctx -> data ; struct PopCache * cache = NULL ; struct Header * h = ctx -> hdrs [ msgno ] ; unsigned short bcache = 1 ; <S2SV_StartBug> msg -> fp = mutt_bcache_get ( pop_data -> bcache , h -> data ) ; <S2SV_EndBug> if ( msg -> fp ) return 0 ; cache = & pop_data -> cache [ h -> index % POP_CACHE_LEN ] ; if ( cache -> path ) { if ( cache -> index == h -> index ) { msg -> fp = fopen ( cache -> path , \"r\" ) ; if ( msg -> fp ) return 0 ; mutt_perror ( cache -> path ) ; return - 1 ; } else { unlink ( cache -> path ) ; FREE ( & cache -> path ) ; } } while ( true ) { if ( pop_reconnect ( ctx ) < 0 ) return - 1 ; if ( h -> refno < 0 ) { mutt_error ( _ ( \"The<S2SV_blank>message<S2SV_blank>index<S2SV_blank>is<S2SV_blank>incorrect.<S2SV_blank>Try<S2SV_blank>reopening<S2SV_blank>the<S2SV_blank>mailbox.\" ) ) ; return - 1 ; } mutt_progress_init ( & progressbar , _ ( \"Fetching<S2SV_blank>message...\" ) , MUTT_PROGRESS_SIZE , NetInc , h -> content -> length + h -> content -> offset - 1 ) ; <S2SV_StartBug> msg -> fp = mutt_bcache_put ( pop_data -> bcache , h -> data ) ; <S2SV_EndBug> if ( ! msg -> fp ) { bcache = 0 ; mutt_mktemp ( path , sizeof ( path ) ) ; msg -> fp = mutt_file_fopen ( path , \"w+\" ) ; if ( ! msg -> fp ) { mutt_perror ( path ) ; return - 1 ; } } snprintf ( buf , sizeof ( buf ) , \"RETR<S2SV_blank>%d\\\\r\\\\n\" , h -> refno ) ; const int ret = pop_fetch_data ( pop_data , buf , & progressbar , fetch_message , msg -> fp ) ; if ( ret == 0 ) break ; mutt_file_fclose ( & msg -> fp ) ; if ( ! bcache ) unlink ( path ) ; if ( ret == - 2 ) { mutt_error ( \"%s\" , pop_data -> err_msg ) ; return - 1 ; } if ( ret == - 3 ) { mutt_error ( _ ( \"Can\\'t<S2SV_blank>write<S2SV_blank>message<S2SV_blank>to<S2SV_blank>temporary<S2SV_blank>file!\" ) ) ; return - 1 ; } } if ( bcache ) <S2SV_StartBug> mutt_bcache_commit ( pop_data -> bcache , h -> data ) ; <S2SV_EndBug> else { cache -> index = h -> index ; cache -> path = mutt_str_strdup ( path ) ; } rewind ( msg -> fp ) ; uidl = h -> data ; if ( ctx -> subj_hash && h -> env -> real_subj ) mutt_hash_delete ( ctx -> subj_hash , h -> env -> real_subj , h ) ; mutt_label_hash_remove ( ctx , h ) ; mutt_env_free ( & h -> env ) ; h -> env = mutt_rfc822_read_header ( msg -> fp , h , 0 , 0 ) ; if ( ctx -> subj_hash && h -> env -> real_subj ) mutt_hash_insert ( ctx -> subj_hash , h -> env -> real_subj , h ) ; mutt_label_hash_add ( ctx , h ) ; h -> data = uidl ; h -> lines = 0 ; fgets ( buf , sizeof ( buf ) , msg -> fp ) ; while ( ! feof ( msg -> fp ) ) { ctx -> hdrs [ msgno ] -> lines ++ ; fgets ( buf , sizeof ( buf ) , msg -> fp ) ; } h -> content -> length = ftello ( msg -> fp ) - h -> content -> offset ; if ( ! WithCrypto ) h -> security = crypt_query ( h -> content ) ; mutt_clear_error ( ) ; rewind ( msg -> fp ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> bcache , cache_id ( <S2SV_ModStart> h -> data ) <S2SV_ModStart> -> bcache , cache_id ( <S2SV_ModStart> h -> data ) <S2SV_ModStart> -> bcache , cache_id ( <S2SV_ModStart> h -> data )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13021\n\n```\nCWE-125 void icmp6_print ( netdissect_options * ndo , const u_char * bp , u_int length , const u_char * bp2 , int fragmented ) { const struct icmp6_hdr * dp ; const struct ip6_hdr * ip ; const struct ip6_hdr * oip ; const struct udphdr * ouh ; int dport ; const u_char * ep ; u_int prot ; dp = ( const struct icmp6_hdr * ) bp ; ip = ( const struct ip6_hdr * ) bp2 ; oip = ( const struct ip6_hdr * ) ( dp + 1 ) ; ep = ndo -> ndo_snapend ; ND_TCHECK ( dp -> icmp6_cksum ) ; if ( ndo -> ndo_vflag && ! fragmented ) { uint16_t sum , udp_sum ; if ( ND_TTEST2 ( bp [ 0 ] , length ) ) { udp_sum = EXTRACT_16BITS ( & dp -> icmp6_cksum ) ; sum = icmp6_cksum ( ndo , ip , dp , length ) ; if ( sum != 0 ) ND_PRINT ( ( ndo , \"[bad<S2SV_blank>icmp6<S2SV_blank>cksum<S2SV_blank>0x%04x<S2SV_blank>-><S2SV_blank>0x%04x!]<S2SV_blank>\" , udp_sum , in_cksum_shouldbe ( udp_sum , sum ) ) ) ; else ND_PRINT ( ( ndo , \"[icmp6<S2SV_blank>sum<S2SV_blank>ok]<S2SV_blank>\" ) ) ; } } ND_PRINT ( ( ndo , \"ICMP6,<S2SV_blank>%s\" , tok2str ( icmp6_type_values , \"unknown<S2SV_blank>icmp6<S2SV_blank>type<S2SV_blank>(%u)\" , dp -> icmp6_type ) ) ) ; if ( ndo -> ndo_vflag && ( dp -> icmp6_type == ND_ROUTER_SOLICIT || dp -> icmp6_type == ND_ROUTER_ADVERT || dp -> icmp6_type == ND_NEIGHBOR_ADVERT || dp -> icmp6_type == ND_NEIGHBOR_SOLICIT || dp -> icmp6_type == ND_REDIRECT || dp -> icmp6_type == ICMP6_HADISCOV_REPLY || dp -> icmp6_type == ICMP6_MOBILEPREFIX_ADVERT ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; switch ( dp -> icmp6_type ) { case ICMP6_DST_UNREACH : ND_TCHECK ( oip -> ip6_dst ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , tok2str ( icmp6_dst_unreach_code_values , \"unknown<S2SV_blank>unreach<S2SV_blank>code<S2SV_blank>(%u)\" , dp -> icmp6_code ) ) ) ; switch ( dp -> icmp6_code ) { case ICMP6_DST_UNREACH_NOROUTE : case ICMP6_DST_UNREACH_ADMIN : case ICMP6_DST_UNREACH_ADDR : ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) ) ) ; break ; case ICMP6_DST_UNREACH_BEYONDSCOPE : ND_PRINT ( ( ndo , \"<S2SV_blank>%s,<S2SV_blank>source<S2SV_blank>address<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , ip6addr_string ( ndo , & oip -> ip6_src ) ) ) ; break ; case ICMP6_DST_UNREACH_NOPORT : if ( ( ouh = get_upperlayer ( ndo , ( const u_char * ) oip , & prot ) ) == NULL ) goto trunc ; dport = EXTRACT_16BITS ( & ouh -> uh_dport ) ; switch ( prot ) { case IPPROTO_TCP : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>tcp<S2SV_blank>port<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , tcpport_string ( ndo , dport ) ) ) ; break ; case IPPROTO_UDP : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>udp<S2SV_blank>port<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , udpport_string ( ndo , dport ) ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>port<S2SV_blank>%d<S2SV_blank>unreachable\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , oip -> ip6_nxt , dport ) ) ; break ; } break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , bp , \"\\\\n\\\\t\" , length ) ; return ; } break ; } break ; case ICMP6_PACKET_TOO_BIG : ND_TCHECK ( dp -> icmp6_mtu ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>mtu<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_mtu ) ) ) ; break ; case ICMP6_TIME_EXCEEDED : ND_TCHECK ( oip -> ip6_dst ) ; switch ( dp -> icmp6_code ) { case ICMP6_TIME_EXCEED_TRANSIT : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) ) ) ; break ; case ICMP6_TIME_EXCEED_REASSEMBLY : ND_PRINT ( ( ndo , \"<S2SV_blank>(reassembly)\" ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>unknown<S2SV_blank>code<S2SV_blank>(%u)\" , dp -> icmp6_code ) ) ; break ; } break ; case ICMP6_PARAM_PROB : ND_TCHECK ( oip -> ip6_dst ) ; switch ( dp -> icmp6_code ) { case ICMP6_PARAMPROB_HEADER : ND_PRINT ( ( ndo , \",<S2SV_blank>erroneous<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; case ICMP6_PARAMPROB_NEXTHEADER : ND_PRINT ( ( ndo , \",<S2SV_blank>next<S2SV_blank>header<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; case ICMP6_PARAMPROB_OPTION : ND_PRINT ( ( ndo , \",<S2SV_blank>option<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>code-#%d\" , dp -> icmp6_code ) ) ; break ; } break ; case ICMP6_ECHO_REQUEST : case ICMP6_ECHO_REPLY : ND_TCHECK ( dp -> icmp6_seq ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_16BITS ( & dp -> icmp6_seq ) ) ) ; break ; case ICMP6_MEMBERSHIP_QUERY : if ( length == MLD_MINLEN ) { mld6_print ( ndo , ( const u_char * ) dp ) ; } else if ( length >= MLDV2_MINLEN ) { ND_PRINT ( ( ndo , \"<S2SV_blank>v2\" ) ) ; mldv2_query_print ( ndo , ( const u_char * ) dp , length ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>unknown-version<S2SV_blank>(len<S2SV_blank>%u)<S2SV_blank>\" , length ) ) ; } break ; case ICMP6_MEMBERSHIP_REPORT : mld6_print ( ndo , ( const u_char * ) dp ) ; break ; case ICMP6_MEMBERSHIP_REDUCTION : mld6_print ( ndo , ( const u_char * ) dp ) ; break ; case ND_ROUTER_SOLICIT : # define RTSOLLEN 8 if ( ndo -> ndo_vflag ) { icmp6_opt_print ( ndo , ( const u_char * ) dp + RTSOLLEN , length - RTSOLLEN ) ; } break ; case ND_ROUTER_ADVERT : # define RTADVLEN 16 if ( ndo -> ndo_vflag ) { const struct nd_router_advert * p ; p = ( const struct nd_router_advert * ) dp ; ND_TCHECK ( p -> nd_ra_retransmit ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\thop<S2SV_blank>limit<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s]\" \",<S2SV_blank>pref<S2SV_blank>%s,<S2SV_blank>router<S2SV_blank>lifetime<S2SV_blank>%us,<S2SV_blank>reachable<S2SV_blank>time<S2SV_blank>%us,<S2SV_blank>retrans<S2SV_blank>time<S2SV_blank>%us\" , ( u_int ) p -> nd_ra_curhoplimit , bittok2str ( icmp6_opt_ra_flag_values , \"none\" , ( p -> nd_ra_flags_reserved ) ) , get_rtpref ( p -> nd_ra_flags_reserved ) , EXTRACT_16BITS ( & p -> nd_ra_router_lifetime ) , EXTRACT_32BITS ( & p -> nd_ra_reachable ) , EXTRACT_32BITS ( & p -> nd_ra_retransmit ) ) ) ; icmp6_opt_print ( ndo , ( const u_char * ) dp + RTADVLEN , length - RTADVLEN ) ; } break ; case ND_NEIGHBOR_SOLICIT : { const struct nd_neighbor_solicit * p ; p = ( const struct nd_neighbor_solicit * ) dp ; ND_TCHECK ( p -> nd_ns_target ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>who<S2SV_blank>has<S2SV_blank>%s\" , ip6addr_string ( ndo , & p -> nd_ns_target ) ) ) ; if ( ndo -> ndo_vflag ) { # define NDSOLLEN 24 icmp6_opt_print ( ndo , ( const u_char * ) dp + NDSOLLEN , length - NDSOLLEN ) ; } } break ; case ND_NEIGHBOR_ADVERT : { const struct nd_neighbor_advert * p ; p = ( const struct nd_neighbor_advert * ) dp ; ND_TCHECK ( p -> nd_na_target ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>tgt<S2SV_blank>is<S2SV_blank>%s\" , ip6addr_string ( ndo , & p -> nd_na_target ) ) ) ; if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( icmp6_nd_na_flag_values , \"none\" , EXTRACT_32BITS ( & p -> nd_na_flags_reserved ) ) ) ) ; # define NDADVLEN 24 icmp6_opt_print ( ndo , ( const u_char * ) dp + NDADVLEN , length - NDADVLEN ) ; # undef NDADVLEN } } break ; case ND_REDIRECT : # define RDR ( i ) ( ( const struct nd_redirect * ) ( i ) ) ND_TCHECK ( RDR ( dp ) -> nd_rd_dst ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ip6addr_string ( ndo , & RDR ( dp ) -> nd_rd_dst ) ) ) ; ND_TCHECK ( RDR ( dp ) -> nd_rd_target ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>to<S2SV_blank>%s\" , ip6addr_string ( ndo , & RDR ( dp ) -> nd_rd_target ) ) ) ; # define REDIRECTLEN 40 if ( ndo -> ndo_vflag ) { icmp6_opt_print ( ndo , ( const u_char * ) dp + REDIRECTLEN , length - REDIRECTLEN ) ; } break ; # undef REDIRECTLEN # undef RDR case ICMP6_ROUTER_RENUMBERING : icmp6_rrenum_print ( ndo , bp , ep ) ; break ; case ICMP6_NI_QUERY : case ICMP6_NI_REPLY : icmp6_nodeinfo_print ( ndo , length , bp , ep ) ; break ; case IND_SOLICIT : case IND_ADVERT : break ; case ICMP6_V2_MEMBERSHIP_REPORT : mldv2_report_print ( ndo , ( const u_char * ) dp , length ) ; break ; case ICMP6_MOBILEPREFIX_SOLICIT : case ICMP6_HADISCOV_REQUEST : ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; break ; case ICMP6_HADISCOV_REPLY : if ( ndo -> ndo_vflag ) { const struct in6_addr * in6 ; const u_char * cp ; ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; cp = ( const u_char * ) dp + length ; in6 = ( const struct in6_addr * ) ( dp + 1 ) ; for ( ; ( const u_char * ) in6 < cp ; in6 ++ ) { ND_TCHECK ( * in6 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ip6addr_string ( ndo , in6 ) ) ) ; } } break ; case ICMP6_MOBILEPREFIX_ADVERT : if ( ndo -> ndo_vflag ) { ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; <S2SV_StartBug> if ( dp -> icmp6_data16 [ 1 ] & 0xc0 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( dp -> icmp6_data16 [ 1 ] & 0x80 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"M\" ) ) ; <S2SV_StartBug> if ( dp -> icmp6_data16 [ 1 ] & 0x40 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"O\" ) ) ; # define MPADVLEN 8 icmp6_opt_print ( ndo , ( const u_char * ) dp + MPADVLEN , length - MPADVLEN ) ; } break ; case ND_RPL_MESSAGE : rpl_print ( ndo , dp , & dp -> icmp6_data8 [ 0 ] , length - sizeof ( struct icmp6_hdr ) + 4 ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t\" , length ) ; return ; } if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|icmp6]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ND_TCHECK <S2SV_ModEnd> ( dp -> <S2SV_ModStart> [ 1 ] <S2SV_ModEnd> ) ; if <S2SV_ModStart> 1 ] & 0xc0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>\" <S2SV_ModEnd> ) ) ; <S2SV_ModStart> 1 ] & 0x80 ) ND_PRINT ( ( ndo , \"M\" ) ) ; if ( dp -> icmp6_data16 [ 1 ] &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4516\n\n```\nCWE-200 static int mp_get_count ( struct sb_uart_state * state , struct serial_icounter_struct * icnt ) { <S2SV_StartBug> struct serial_icounter_struct icount ; <S2SV_EndBug> struct sb_uart_icount cnow ; struct sb_uart_port * port = state -> port ; spin_lock_irq ( & port -> lock ) ; memcpy ( & cnow , & port -> icount , sizeof ( struct sb_uart_icount ) ) ; spin_unlock_irq ( & port -> lock ) ; icount . cts = cnow . cts ; icount . dsr = cnow . dsr ; icount . rng = cnow . rng ; icount . dcd = cnow . dcd ; icount . rx = cnow . rx ; icount . tx = cnow . tx ; icount . frame = cnow . frame ; icount . overrun = cnow . overrun ; icount . parity = cnow . parity ; icount . brk = cnow . brk ; icount . buf_overrun = cnow . buf_overrun ; return copy_to_user ( icnt , & icount , sizeof ( icount ) ) ? - EFAULT : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct serial_icounter_struct icount = { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static bool cgroupfs_mount_cgroup ( void * hdata , const char * root , int type ) { size_t bufsz = strlen ( root ) + sizeof ( \"/sys/fs/cgroup\" ) ; char * path = NULL ; char * * parts = NULL ; char * dirname = NULL ; char * abs_path = NULL ; char * abs_path2 = NULL ; struct cgfs_data * cgfs_d ; struct cgroup_process_info * info , * base_info ; int r , saved_errno = 0 ; cgfs_d = hdata ; if ( ! cgfs_d ) return false ; base_info = cgfs_d -> info ; if ( type == LXC_AUTO_CGROUP_FULL_NOSPEC ) type = LXC_AUTO_CGROUP_FULL_MIXED ; else if ( type == LXC_AUTO_CGROUP_NOSPEC ) type = LXC_AUTO_CGROUP_MIXED ; if ( type < LXC_AUTO_CGROUP_RO || type > LXC_AUTO_CGROUP_FULL_MIXED ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>mount<S2SV_blank>cgroups<S2SV_blank>into<S2SV_blank>container:<S2SV_blank>invalid<S2SV_blank>type<S2SV_blank>specified<S2SV_blank>internally\" ) ; errno = EINVAL ; return false ; } path = calloc ( 1 , bufsz ) ; if ( ! path ) return false ; snprintf ( path , bufsz , \"%s/sys/fs/cgroup\" , root ) ; <S2SV_StartBug> r = mount ( \"cgroup_root\" , path , \"tmpfs\" , MS_NOSUID | MS_NODEV | MS_NOEXEC | MS_RELATIME , \"size=10240k,mode=755\" ) ; <S2SV_EndBug> if ( r < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>mount<S2SV_blank>tmpfs<S2SV_blank>to<S2SV_blank>/sys/fs/cgroup<S2SV_blank>in<S2SV_blank>the<S2SV_blank>container\" ) ; return false ; } for ( info = base_info ; info ; info = info -> next ) { size_t subsystem_count , i ; struct cgroup_mount_point * mp = info -> designated_mount_point ; if ( ! mp ) mp = lxc_cgroup_find_mount_point ( info -> hierarchy , info -> cgroup_path , true ) ; if ( ! mp ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>find<S2SV_blank>original<S2SV_blank>mount<S2SV_blank>point<S2SV_blank>for<S2SV_blank>cgroup<S2SV_blank>hierarchy<S2SV_blank>while<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>cgroup<S2SV_blank>filesystem\" ) ; goto out_error ; } subsystem_count = lxc_array_len ( ( void * * ) info -> hierarchy -> subsystems ) ; parts = calloc ( subsystem_count + 1 , sizeof ( char * ) ) ; if ( ! parts ) goto out_error ; for ( i = 0 ; i < subsystem_count ; i ++ ) { if ( ! strncmp ( info -> hierarchy -> subsystems [ i ] , \"name=\" , 5 ) ) parts [ i ] = info -> hierarchy -> subsystems [ i ] + 5 ; else parts [ i ] = info -> hierarchy -> subsystems [ i ] ; } dirname = lxc_string_join ( \",\" , ( const char * * ) parts , false ) ; if ( ! dirname ) goto out_error ; abs_path = lxc_append_paths ( path , dirname ) ; if ( ! abs_path ) goto out_error ; r = mkdir_p ( abs_path , 0755 ) ; if ( r < 0 && errno != EEXIST ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>cgroup<S2SV_blank>subsystem<S2SV_blank>directory<S2SV_blank>/sys/fs/cgroup/%s\" , dirname ) ; goto out_error ; } abs_path2 = lxc_append_paths ( abs_path , info -> cgroup_path ) ; if ( ! abs_path2 ) goto out_error ; if ( type == LXC_AUTO_CGROUP_FULL_RO || type == LXC_AUTO_CGROUP_FULL_RW || type == LXC_AUTO_CGROUP_FULL_MIXED ) { if ( strcmp ( mp -> mount_prefix , \"/\" ) != 0 ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>automatically<S2SV_blank>mount<S2SV_blank>cgroup-full<S2SV_blank>to<S2SV_blank>/sys/fs/cgroup/%s:<S2SV_blank>host<S2SV_blank>has<S2SV_blank>no<S2SV_blank>mount<S2SV_blank>point<S2SV_blank>for<S2SV_blank>this<S2SV_blank>cgroup<S2SV_blank>filesystem<S2SV_blank>that<S2SV_blank>has<S2SV_blank>access<S2SV_blank>to<S2SV_blank>the<S2SV_blank>root<S2SV_blank>cgroup\" , dirname ) ; goto out_error ; } r = mount ( mp -> mount_point , abs_path , \"none\" , MS_BIND , 0 ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>bind-mounting<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s\" , mp -> mount_point , abs_path ) ; goto out_error ; } if ( type == LXC_AUTO_CGROUP_FULL_RO || type == LXC_AUTO_CGROUP_FULL_MIXED ) { r = mount ( NULL , abs_path , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>re-mounting<S2SV_blank>%s<S2SV_blank>readonly\" , abs_path ) ; goto out_error ; } } if ( type == LXC_AUTO_CGROUP_FULL_MIXED ) { r = mount ( abs_path2 , abs_path2 , NULL , MS_BIND , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>bind-mounting<S2SV_blank>%s<S2SV_blank>onto<S2SV_blank>itself\" , abs_path2 ) ; goto out_error ; } r = mount ( NULL , abs_path2 , NULL , MS_REMOUNT | MS_BIND , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>re-mounting<S2SV_blank>%s<S2SV_blank>readwrite\" , abs_path2 ) ; goto out_error ; } } } else { r = mkdir_p ( abs_path2 , 0755 ) ; if ( r < 0 && errno != EEXIST ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>cgroup<S2SV_blank>directory<S2SV_blank>/sys/fs/cgroup/%s%s\" , dirname , info -> cgroup_path ) ; goto out_error ; } if ( type == LXC_AUTO_CGROUP_MIXED || type == LXC_AUTO_CGROUP_RO ) { r = mount ( abs_path , abs_path , NULL , MS_BIND , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>bind-mounting<S2SV_blank>%s<S2SV_blank>onto<S2SV_blank>itself\" , abs_path ) ; goto out_error ; } r = mount ( NULL , abs_path , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>re-mounting<S2SV_blank>%s<S2SV_blank>readonly\" , abs_path ) ; goto out_error ; } } free ( abs_path ) ; abs_path = NULL ; abs_path = cgroup_to_absolute_path ( mp , info -> cgroup_path , NULL ) ; if ( ! abs_path ) goto out_error ; r = mount ( abs_path , abs_path2 , \"none\" , MS_BIND , 0 ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>bind-mounting<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s\" , abs_path , abs_path2 ) ; goto out_error ; } if ( type == LXC_AUTO_CGROUP_RO ) { r = mount ( NULL , abs_path2 , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL ) ; if ( r < 0 ) { SYSERROR ( \"error<S2SV_blank>re-mounting<S2SV_blank>%s<S2SV_blank>readonly\" , abs_path2 ) ; goto out_error ; } } } free ( abs_path ) ; free ( abs_path2 ) ; abs_path = NULL ; abs_path2 = NULL ; if ( subsystem_count > 1 ) { for ( i = 0 ; i < subsystem_count ; i ++ ) { abs_path = lxc_append_paths ( path , parts [ i ] ) ; if ( ! abs_path ) goto out_error ; r = symlink ( dirname , abs_path ) ; if ( r < 0 ) WARN ( \"could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>symlink<S2SV_blank>%s<S2SV_blank>-><S2SV_blank>%s<S2SV_blank>in<S2SV_blank>/sys/fs/cgroup<S2SV_blank>of<S2SV_blank>container\" , parts [ i ] , dirname ) ; free ( abs_path ) ; abs_path = NULL ; } } free ( dirname ) ; free ( parts ) ; dirname = NULL ; parts = NULL ; } free ( path ) ; return true ; out_error : saved_errno = errno ; free ( path ) ; free ( dirname ) ; free ( parts ) ; free ( abs_path ) ; free ( abs_path2 ) ; errno = saved_errno ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; r = safe_mount <S2SV_ModEnd> ( \"cgroup_root\" , <S2SV_ModStart> MS_RELATIME , \"size=10240k,mode=755\" , root\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5096\n\n```\nCWE-190 PHPAPI PHP_FUNCTION ( fread ) { zval * arg1 ; long len ; php_stream * stream ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"rl\" , & arg1 , & len ) == FAILURE ) { RETURN_FALSE ; } PHP_STREAM_TO_ZVAL ( stream , & arg1 ) ; if ( len <= 0 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Length<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\" ) ; RETURN_FALSE ; } <S2SV_StartBug> Z_STRVAL_P ( return_value ) = emalloc ( len + 1 ) ; <S2SV_EndBug> Z_STRLEN_P ( return_value ) = php_stream_read ( stream , Z_STRVAL_P ( return_value ) , len ) ; Z_STRVAL_P ( return_value ) [ Z_STRLEN_P ( return_value ) ] = 0 ; Z_TYPE_P ( return_value ) = IS_STRING ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RETURN_FALSE ; } if ( len > INT_MAX ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Length<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>no<S2SV_blank>more<S2SV_blank>than<S2SV_blank>%d\" , INT_MAX ) ; RETURN_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16805\n\n```\nCWE-125 static const ut8 * r_bin_dwarf_parse_attr_value ( const ut8 * obuf , int obuf_len , RBinDwarfAttrSpec * spec , RBinDwarfAttrValue * value , const RBinDwarfCompUnitHdr * hdr , const ut8 * debug_str , size_t debug_str_len ) { const ut8 * buf = obuf ; const ut8 * buf_end = obuf + obuf_len ; size_t j ; <S2SV_StartBug> if ( ! spec || ! value || ! hdr || ! obuf || obuf_len < 0 ) { <S2SV_EndBug> return NULL ; } value -> form = spec -> attr_form ; value -> name = spec -> attr_name ; value -> encoding . block . data = NULL ; value -> encoding . str_struct . string = NULL ; value -> encoding . str_struct . offset = 0 ; switch ( spec -> attr_form ) { case DW_FORM_addr : switch ( hdr -> pointer_size ) { case 1 : value -> encoding . address = READ ( buf , ut8 ) ; break ; case 2 : value -> encoding . address = READ ( buf , ut16 ) ; break ; case 4 : value -> encoding . address = READ ( buf , ut32 ) ; break ; case 8 : value -> encoding . address = READ ( buf , ut64 ) ; break ; default : eprintf ( \"DWARF:<S2SV_blank>Unexpected<S2SV_blank>pointer<S2SV_blank>size:<S2SV_blank>%u\\\\n\" , ( unsigned ) hdr -> pointer_size ) ; return NULL ; } break ; case DW_FORM_block2 : value -> encoding . block . length = READ ( buf , ut16 ) ; if ( value -> encoding . block . length > 0 ) { value -> encoding . block . data = calloc ( sizeof ( ut8 ) , value -> encoding . block . length ) ; for ( j = 0 ; j < value -> encoding . block . length ; j ++ ) { value -> encoding . block . data [ j ] = READ ( buf , ut8 ) ; } } break ; case DW_FORM_block4 : value -> encoding . block . length = READ ( buf , ut32 ) ; if ( value -> encoding . block . length > 0 ) { ut8 * data = calloc ( sizeof ( ut8 ) , value -> encoding . block . length ) ; if ( data ) { for ( j = 0 ; j < value -> encoding . block . length ; j ++ ) { data [ j ] = READ ( buf , ut8 ) ; } } value -> encoding . block . data = data ; } break ; <S2SV_StartBug> case DW_FORM_data2 : <S2SV_EndBug> value -> encoding . data = READ ( buf , ut16 ) ; break ; case DW_FORM_data4 : value -> encoding . data = READ ( buf , ut32 ) ; break ; case DW_FORM_data8 : value -> encoding . data = READ ( buf , ut64 ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case DW_FORM_string : value -> encoding . str_struct . string = * buf ? strdup ( ( const char * ) buf ) : NULL ; buf += ( strlen ( ( const char * ) buf ) + 1 ) ; break ; case DW_FORM_block : buf = r_uleb128 ( buf , buf_end - buf , & value -> encoding . block . length ) ; if ( ! buf ) { return NULL ; } value -> encoding . block . data = calloc ( sizeof ( ut8 ) , value -> encoding . block . length ) ; <S2SV_StartBug> for ( j = 0 ; j < value -> encoding . block . length ; j ++ ) { <S2SV_EndBug> <S2SV_StartBug> value -> encoding . block . data [ j ] = READ ( buf , ut8 ) ; <S2SV_EndBug> } break ; case DW_FORM_block1 : value -> encoding . block . length = READ ( buf , ut8 ) ; value -> encoding . block . data = calloc ( sizeof ( ut8 ) , value -> encoding . block . length + 1 ) ; <S2SV_StartBug> for ( j = 0 ; j < value -> encoding . block . length ; j ++ ) { <S2SV_EndBug> <S2SV_StartBug> value -> encoding . block . data [ j ] = READ ( buf , ut8 ) ; <S2SV_EndBug> } break ; case DW_FORM_flag : value -> encoding . flag = READ ( buf , ut8 ) ; break ; case DW_FORM_sdata : buf = r_leb128 ( buf , & value -> encoding . sdata ) ; break ; case DW_FORM_strp : value -> encoding . str_struct . offset = READ ( buf , ut32 ) ; if ( debug_str && value -> encoding . str_struct . offset < debug_str_len ) { value -> encoding . str_struct . string = strdup ( ( const char * ) ( debug_str + value -> encoding . str_struct . offset ) ) ; } else { value -> encoding . str_struct . string = NULL ; } break ; case DW_FORM_udata : { ut64 ndata = 0 ; const ut8 * data = ( const ut8 * ) & ndata ; buf = r_uleb128 ( buf , R_MIN ( sizeof ( data ) , ( size_t ) ( buf_end - buf ) ) , & ndata ) ; memcpy ( & value -> encoding . data , data , sizeof ( value -> encoding . data ) ) ; value -> encoding . str_struct . string = NULL ; } break ; case DW_FORM_ref_addr : value -> encoding . reference = READ ( buf , ut64 ) ; break ; case DW_FORM_ref1 : value -> encoding . reference = READ ( buf , ut8 ) ; break ; case DW_FORM_ref2 : value -> encoding . reference = READ ( buf , ut16 ) ; break ; case DW_FORM_ref4 : value -> encoding . reference = READ ( buf , ut32 ) ; break ; case DW_FORM_ref8 : value -> encoding . reference = READ ( buf , ut64 ) ; break ; case DW_FORM_data1 : value -> encoding . data = READ ( buf , ut8 ) ; break ; default : eprintf ( \"Unknown<S2SV_blank>DW_FORM<S2SV_blank>0x%02\" PFMT64x \"\\\\n\" , spec -> attr_form ) ; value -> encoding . data = 0 ; return NULL ; } return buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> || obuf_len < 1 <S2SV_ModEnd> ) { return <S2SV_ModStart> } break ; # if 0 <S2SV_ModStart> ; break ; # endif <S2SV_ModStart> length ) ; if ( value -> encoding . block . data ) { <S2SV_ModStart> ut8 ) ; } <S2SV_ModStart> 1 ) ; if ( value -> encoding . block . data ) { <S2SV_ModStart> ut8 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12644\n\n```\nCWE-772 static Image * ReadDCMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowDCMException ( exception , message ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( stream_info != ( DCMStreamInfo * ) NULL ) stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; ThrowReaderException ( ( exception ) , ( message ) ) ; } <S2SV_EndBug> char explicit_vr [ MagickPathExtent ] , implicit_vr [ MagickPathExtent ] , magick [ MagickPathExtent ] , photometric [ MagickPathExtent ] ; DCMInfo info ; DCMStreamInfo * stream_info ; Image * image ; int * bluemap , datum , * greenmap , * graymap , * redmap ; MagickBooleanType explicit_file , explicit_retry , sequence , use_explicit ; MagickOffsetType offset ; register unsigned char * p ; register ssize_t i ; size_t colors , height , length , number_scenes , quantum , status , width ; ssize_t count , scene ; unsigned char * data ; unsigned short group , element ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 8UL ; image -> endian = LSBEndian ; data = ( unsigned char * ) NULL ; stream_info = ( DCMStreamInfo * ) AcquireMagickMemory ( sizeof ( * stream_info ) ) ; if ( stream_info == ( DCMStreamInfo * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( stream_info , 0 , sizeof ( * stream_info ) ) ; count = ReadBlob ( image , 128 , ( unsigned char * ) magick ) ; if ( count != 128 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) magick ) ; if ( ( count != 4 ) || ( LocaleNCompare ( magick , \"DICM\" , 4 ) != 0 ) ) { offset = SeekBlob ( image , 0L , SEEK_SET ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickString ( photometric , \"MONOCHROME1<S2SV_blank>\" , MagickPathExtent ) ; info . polarity = MagickFalse ; info . scale = ( Quantum * ) NULL ; info . bits_allocated = 8 ; info . bytes_per_pixel = 1 ; info . depth = 8 ; info . mask = 0xffff ; info . max_value = 255UL ; info . samples_per_pixel = 1 ; info . signed_data = ( ~ 0UL ) ; info . significant_bits = 0 ; info . rescale = MagickFalse ; info . rescale_intercept = 0.0 ; info . rescale_slope = 1.0 ; info . window_center = 0.0 ; info . window_width = 0.0 ; data = ( unsigned char * ) NULL ; element = 0 ; explicit_vr [ 2 ] = '\\\\0' ; explicit_file = MagickFalse ; colors = 0 ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; graymap = ( int * ) NULL ; height = 0 ; number_scenes = 1 ; sequence = MagickFalse ; use_explicit = MagickFalse ; explicit_retry = MagickFalse ; width = 0 ; for ( group = 0 ; ( group != 0x7FE0 ) || ( element != 0x0010 ) || ( sequence != MagickFalse ) ; ) { image -> offset = ( ssize_t ) TellBlob ( image ) ; group = ReadBlobLSBShort ( image ) ; element = ReadBlobLSBShort ( image ) ; if ( ( group != 0x0002 ) && ( image -> endian == MSBEndian ) ) { group = ( unsigned short ) ( ( group << 8 ) | ( ( group >> 8 ) & 0xFF ) ) ; element = ( unsigned short ) ( ( element << 8 ) | ( ( element >> 8 ) & 0xFF ) ) ; } quantum = 0 ; for ( i = 0 ; dicom_info [ i ] . group < 0xffff ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) CopyMagickString ( implicit_vr , dicom_info [ i ] . vr , MagickPathExtent ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) explicit_vr ) ; if ( count != 2 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( explicit_file == MagickFalse ) && ( group != 0x0002 ) ) explicit_file = ( isupper ( ( unsigned char ) * explicit_vr ) != MagickFalse ) && ( isupper ( ( unsigned char ) * ( explicit_vr + 1 ) ) != MagickFalse ) ? MagickTrue : MagickFalse ; use_explicit = ( ( group == 0x0002 ) && ( explicit_retry == MagickFalse ) ) || ( explicit_file != MagickFalse ) ? MagickTrue : MagickFalse ; if ( ( use_explicit != MagickFalse ) && ( strncmp ( implicit_vr , \"xs\" , 2 ) == 0 ) ) ( void ) CopyMagickString ( implicit_vr , explicit_vr , MagickPathExtent ) ; if ( ( use_explicit == MagickFalse ) || ( strncmp ( implicit_vr , \"!!\" , 2 ) == 0 ) ) { offset = SeekBlob ( image , ( MagickOffsetType ) - 2 , SEEK_CUR ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; quantum = 4 ; } else { quantum = 2 ; if ( ( strncmp ( explicit_vr , \"OB\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"UN\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"SQ\" , 2 ) == 0 ) ) { ( void ) ReadBlobLSBShort ( image ) ; quantum = 4 ; } } datum = 0 ; if ( quantum == 4 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( quantum == 2 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } quantum = 0 ; length = 1 ; if ( datum != 0 ) { if ( ( strncmp ( implicit_vr , \"SS\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"US\" , 2 ) == 0 ) ) quantum = 2 ; else if ( ( strncmp ( implicit_vr , \"UL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"FL\" , 2 ) == 0 ) ) quantum = 4 ; else if ( strncmp ( implicit_vr , \"FD\" , 2 ) != 0 ) quantum = 1 ; else quantum = 8 ; if ( datum != ~ 0 ) length = ( size_t ) datum / quantum ; else { quantum = 0 ; length = 0 ; } } if ( image_info -> verbose != MagickFalse ) { if ( use_explicit == MagickFalse ) explicit_vr [ 0 ] = '\\\\0' ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) FormatLocaleFile ( stdout , \"0x%04lX<S2SV_blank>%4ld<S2SV_blank>%s-%s<S2SV_blank>(0x%04lx,0x%04lx)\" , ( unsigned long ) image -> offset , ( long ) length , implicit_vr , explicit_vr , ( unsigned long ) group , ( unsigned long ) element ) ; if ( dicom_info [ i ] . description != ( char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"<S2SV_blank>%s\" , dicom_info [ i ] . description ) ; ( void ) FormatLocaleFile ( stdout , \":<S2SV_blank>\" ) ; } if ( ( sequence == MagickFalse ) && ( group == 0x7FE0 ) && ( element == 0x0010 ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; break ; } data = ( unsigned char * ) NULL ; if ( ( length == 1 ) && ( quantum == 1 ) ) datum = ReadBlobByte ( image ) ; else if ( ( length == 1 ) && ( quantum == 2 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } else if ( ( length == 1 ) && ( quantum == 4 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( ( quantum != 0 ) && ( length != 0 ) ) { if ( length > GetBlobSize ( image ) ) <S2SV_StartBug> ThrowReaderException ( CorruptImageError , <S2SV_EndBug> \"InsufficientImageDataInFile\" ) ; if ( ~ length >= 1 ) data = ( unsigned char * ) AcquireQuantumMemory ( length + 1 , quantum * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) quantum * length , data ) ; if ( count != ( ssize_t ) ( quantum * length ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"count=%d<S2SV_blank>quantum=%d<S2SV_blank>\" \"length=%d<S2SV_blank>group=%d\\\\n\" , ( int ) count , ( int ) quantum , ( int ) length , ( int ) group ) ; ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } data [ length * quantum ] = '\\\\0' ; } else if ( ( unsigned int ) datum == 0xFFFFFFFFU ) { sequence = MagickTrue ; continue ; } if ( ( unsigned int ) ( ( group << 16 ) | element ) == 0xFFFEE0DD ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; sequence = MagickFalse ; continue ; } if ( sequence != MagickFalse ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; continue ; } switch ( group ) { case 0x0002 : { switch ( element ) { case 0x0010 : { char transfer_syntax [ MagickPathExtent ] ; if ( ( datum == 0 ) && ( explicit_retry == MagickFalse ) ) { explicit_retry = MagickTrue ; ( void ) SeekBlob ( image , ( MagickOffsetType ) 0 , SEEK_SET ) ; group = 0 ; element = 0 ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"Corrupted<S2SV_blank>image<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>explicit<S2SV_blank>format\\\\n\" ) ; break ; } * transfer_syntax = '\\\\0' ; if ( data != ( unsigned char * ) NULL ) ( void ) CopyMagickString ( transfer_syntax , ( char * ) data , MagickPathExtent ) ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"transfer_syntax=%s\\\\n\" , ( const char * ) transfer_syntax ) ; if ( strncmp ( transfer_syntax , \"1.2.840.10008.1.2\" , 17 ) == 0 ) { int subtype , type ; type = 1 ; subtype = 0 ; if ( strlen ( transfer_syntax ) > 17 ) { count = ( ssize_t ) sscanf ( transfer_syntax + 17 , \".%d.%d\" , & type , & subtype ) ; if ( count < 1 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } switch ( type ) { case 1 : { image -> endian = LSBEndian ; break ; } case 2 : { image -> endian = MSBEndian ; break ; } case 4 : { if ( ( subtype >= 80 ) && ( subtype <= 81 ) ) image -> compression = JPEGCompression ; else if ( ( subtype >= 90 ) && ( subtype <= 93 ) ) image -> compression = JPEG2000Compression ; else image -> compression = JPEGCompression ; break ; } case 5 : { image -> compression = RLECompression ; break ; } } } break ; } default : break ; } break ; } case 0x0028 : { switch ( element ) { case 0x0002 : { info . samples_per_pixel = ( size_t ) datum ; break ; } case 0x0004 : { if ( data == ( unsigned char * ) NULL ) break ; for ( i = 0 ; i < ( ssize_t ) MagickMin ( length , MagickPathExtent - 1 ) ; i ++ ) photometric [ i ] = ( char ) data [ i ] ; photometric [ i ] = '\\\\0' ; info . polarity = LocaleCompare ( photometric , \"MONOCHROME1<S2SV_blank>\" ) == 0 ? MagickTrue : MagickFalse ; break ; } case 0x0006 : { if ( datum == 1 ) image -> interlace = PlaneInterlace ; break ; } case 0x0008 : { if ( data == ( unsigned char * ) NULL ) break ; number_scenes = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x0010 : { height = ( size_t ) datum ; break ; } case 0x0011 : { width = ( size_t ) datum ; break ; } case 0x0100 : { info . bits_allocated = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( datum > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . bits_allocated ; if ( info . depth > 32 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . bits_allocated ) - 1 ; image -> depth = info . depth ; break ; } case 0x0101 : { info . significant_bits = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( info . significant_bits > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . significant_bits ; if ( info . depth > 32 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . significant_bits ) - 1 ; info . mask = ( size_t ) GetQuantumRange ( info . significant_bits ) ; image -> depth = info . depth ; break ; } case 0x0102 : { break ; } case 0x0103 : { info . signed_data = ( size_t ) datum ; break ; } case 0x1050 : { if ( data != ( unsigned char * ) NULL ) info . window_center = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1051 : { if ( data != ( unsigned char * ) NULL ) info . window_width = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1052 : { if ( data != ( unsigned char * ) NULL ) info . rescale_intercept = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1053 : { if ( data != ( unsigned char * ) NULL ) info . rescale_slope = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1200 : case 0x3006 : { if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / info . bytes_per_pixel ) ; datum = ( int ) colors ; graymap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * graymap ) ) ; if ( graymap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) if ( info . bytes_per_pixel == 1 ) graymap [ i ] = ( int ) data [ i ] ; else graymap [ i ] = ( int ) ( ( short * ) data ) [ i ] ; break ; } case 0x1201 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; redmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * redmap ) ) ; if ( redmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; redmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1202 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; greenmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * greenmap ) ) ; if ( greenmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; greenmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1203 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; bluemap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * bluemap ) ) ; if ( bluemap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; bluemap [ i ] = ( int ) index ; p += 2 ; } break ; } default : break ; } break ; } case 0x2050 : { switch ( element ) { case 0x0020 : { if ( ( data != ( unsigned char * ) NULL ) && ( strncmp ( ( char * ) data , \"INVERSE\" , 7 ) == 0 ) ) info . polarity = MagickTrue ; break ; } default : break ; } break ; } default : break ; } if ( data != ( unsigned char * ) NULL ) { char * attribute ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; if ( dicom_info [ i ] . description != ( char * ) NULL ) { attribute = AcquireString ( \"dcm:\" ) ; ( void ) ConcatenateString ( & attribute , dicom_info [ i ] . description ) ; for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i == ( ssize_t ) length ) || ( length > 4 ) ) { ( void ) SubstituteString ( & attribute , \"<S2SV_blank>\" , \"\" ) ; ( void ) SetImageProperty ( image , attribute , ( char * ) data , exception ) ; } attribute = DestroyString ( attribute ) ; } } if ( image_info -> verbose != MagickFalse ) { if ( data == ( unsigned char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"%d\\\\n\" , datum ) ; else { for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i != ( ssize_t ) length ) && ( length <= 4 ) ) { ssize_t j ; datum = 0 ; for ( j = ( ssize_t ) length - 1 ; j >= 0 ; j -- ) datum = ( 256 * datum + data [ j ] ) ; ( void ) FormatLocaleFile ( stdout , \"%d\" , datum ) ; } else for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( isprint ( ( int ) data [ i ] ) != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"%c\" , data [ i ] ) ; else ( void ) FormatLocaleFile ( stdout , \"%c\" , '.' ) ; ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; } } if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( ( width == 0 ) || ( height == 0 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; if ( info . signed_data == 0xffff ) info . signed_data = ( size_t ) ( info . significant_bits == 16 ? 1 : 0 ) ; if ( ( image -> compression == JPEGCompression ) || ( image -> compression == JPEG2000Compression ) ) { Image * images ; ImageInfo * read_info ; int c ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; ( void ) ( ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; images = NewImageList ( ) ; for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { char filename [ MagickPathExtent ] ; const char * property ; FILE * file ; Image * jpeg_image ; int unique_file ; unsigned int tag ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( tag == 0xFFFEE0DD ) break ; if ( tag != 0xFFFEE000 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( file == ( FILE * ) NULL ) { ( void ) RelinquishUniqueFileResource ( filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , filename ) ; break ; } for ( ; length != 0 ; length -- ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } ( void ) fputc ( c , file ) ; } ( void ) fclose ( file ) ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"jpeg:%s\" , filename ) ; if ( image -> compression == JPEG2000Compression ) ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"j2k:%s\" , filename ) ; jpeg_image = ReadImage ( read_info , exception ) ; if ( jpeg_image != ( Image * ) NULL ) { ResetImagePropertyIterator ( image ) ; property = GetNextImageProperty ( image ) ; while ( property != ( const char * ) NULL ) { ( void ) SetImageProperty ( jpeg_image , property , GetImageProperty ( image , property , exception ) , exception ) ; property = GetNextImageProperty ( image ) ; } AppendImageToList ( & images , jpeg_image ) ; } ( void ) RelinquishUniqueFileResource ( filename ) ; } read_info = DestroyImageInfo ( read_info ) ; image = DestroyImage ( image ) ; return ( GetFirstImageInList ( images ) ) ; } if ( info . depth != ( 1UL * MAGICKCORE_QUANTUM_DEPTH ) ) { QuantumAny range ; length = ( size_t ) ( GetQuantumRange ( info . depth ) + 1 ) ; info . scale = ( Quantum * ) AcquireQuantumMemory ( length , sizeof ( * info . scale ) ) ; if ( info . scale == ( Quantum * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; range = GetQuantumRange ( info . depth ) ; for ( i = 0 ; i <= ( ssize_t ) GetQuantumRange ( info . depth ) ; i ++ ) info . scale [ i ] = ScaleAnyToQuantum ( ( size_t ) i , range ) ; } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) + 8 ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } } for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { if ( image_info -> ping != MagickFalse ) break ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; image -> depth = info . depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; image -> colorspace = RGBColorspace ; if ( ( image -> colormap == ( PixelInfo * ) NULL ) && ( info . samples_per_pixel == 1 ) ) { int index ; size_t one ; one = 1 ; if ( colors == 0 ) colors = one << info . depth ; if ( AcquireImageColormap ( image , colors , exception ) == MagickFalse ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( redmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = redmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; } if ( greenmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = greenmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . green = ( MagickRealType ) index ; } if ( bluemap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = bluemap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } if ( graymap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = graymap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; image -> colormap [ i ] . green = ( MagickRealType ) index ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; stream_info -> remaining = ( size_t ) ReadBlobLSBLong ( image ) ; if ( ( tag != 0xFFFEE000 ) || ( stream_info -> remaining <= 64 ) || ( EOFBlob ( image ) != MagickFalse ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; stream_info -> count = 0 ; stream_info -> segment_count = ReadBlobLSBLong ( image ) ; for ( i = 0 ; i < 15 ; i ++ ) stream_info -> segments [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; stream_info -> remaining -= 64 ; if ( stream_info -> segment_count > 1 ) { info . bytes_per_pixel = 1 ; info . depth = 8 ; if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , ( MagickOffsetType ) stream_info -> offsets [ 0 ] + stream_info -> segments [ 0 ] , SEEK_SET ) ; } } if ( ( info . samples_per_pixel > 1 ) && ( image -> interlace == PlaneInterlace ) ) { register ssize_t x ; register Quantum * q ; ssize_t y ; for ( i = 0 ; i < ( ssize_t ) info . samples_per_pixel ; i ++ ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( ( int ) i ) { case 0 : { SetPixelRed ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 1 : { SetPixelGreen ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 2 : { SetPixelBlue ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 3 : { SetPixelAlpha ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } } else { const char * option ; option = GetImageOption ( image_info , \"dcm:display-range\" ) ; if ( option != ( const char * ) NULL ) { if ( LocaleCompare ( option , \"reset\" ) == 0 ) info . window_width = 0 ; } option = GetImageOption ( image_info , \"dcm:window\" ) ; if ( option != ( char * ) NULL ) { GeometryInfo geometry_info ; MagickStatusType flags ; flags = ParseGeometry ( option , & geometry_info ) ; if ( flags & RhoValue ) info . window_center = geometry_info . rho ; if ( flags & SigmaValue ) info . window_width = geometry_info . sigma ; info . rescale = MagickTrue ; } option = GetImageOption ( image_info , \"dcm:rescale\" ) ; if ( option != ( char * ) NULL ) info . rescale = IsStringTrue ( option ) ; if ( ( info . window_center != 0 ) && ( info . window_width == 0 ) ) info . window_width = info . window_center ; status = ReadDCMPixels ( image , & info , stream_info , MagickTrue , exception ) ; if ( ( status != MagickFalse ) && ( stream_info -> segment_count > 1 ) ) { if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , ( MagickOffsetType ) stream_info -> offsets [ 0 ] + stream_info -> segments [ 1 ] , SEEK_SET ) ; ( void ) ReadDCMPixels ( image , & info , stream_info , MagickFalse , exception ) ; } } if ( SetImageGray ( image , exception ) != MagickFalse ) ( void ) SetImageColorspace ( image , GRAYColorspace , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( number_scenes - 1 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , message ) \\\\\\n{ <S2SV_ModEnd> if ( data <S2SV_ModStart> ) ) ; \\\\\\n} <S2SV_ModEnd> char explicit_vr [ <S2SV_ModStart> image ) ) ThrowDCMException <S2SV_ModEnd> ( CorruptImageError ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-000 static int crypto_report_comp ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_comp rcomp ; <S2SV_StartBug> strlcpy ( rcomp . type , \"compression\" , sizeof ( rcomp . type ) ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_COMPRESS , sizeof ( struct crypto_report_comp ) , & rcomp ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_comp rcomp ; strncpy <S2SV_ModEnd> ( rcomp .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8569\n\n```\nCWE-200 static int pptp_bind ( struct socket * sock , struct sockaddr * uservaddr , int sockaddr_len ) { struct sock * sk = sock -> sk ; struct sockaddr_pppox * sp = ( struct sockaddr_pppox * ) uservaddr ; struct pppox_sock * po = pppox_sk ( sk ) ; struct pptp_opt * opt = & po -> proto . pptp ; int error = 0 ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> opt -> src_addr = sp -> sa_addr . pptp ; if ( add_chan ( po ) ) error = - EBUSY ; release_sock ( sk ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; if ( sockaddr_len < sizeof ( struct sockaddr_pppox ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8543\n\n```\nCWE-000 static int inet6_create ( struct net * net , struct socket * sock , int protocol , int kern ) { struct inet_sock * inet ; struct ipv6_pinfo * np ; struct sock * sk ; struct inet_protosw * answer ; struct proto * answer_prot ; unsigned char answer_flags ; int try_loading_module = 0 ; <S2SV_StartBug> int err ; <S2SV_EndBug> lookup_protocol : err = - ESOCKTNOSUPPORT ; rcu_read_lock ( ) ; list_for_each_entry_rcu ( answer , & inetsw6 [ sock -> type ] , list ) { err = 0 ; if ( protocol == answer -> protocol ) { if ( protocol != IPPROTO_IP ) break ; } else { if ( IPPROTO_IP == protocol ) { protocol = answer -> protocol ; break ; } if ( IPPROTO_IP == answer -> protocol ) break ; } err = - EPROTONOSUPPORT ; } if ( err ) { if ( try_loading_module < 2 ) { rcu_read_unlock ( ) ; if ( ++ try_loading_module == 1 ) request_module ( \"net-pf-%d-proto-%d-type-%d\" , PF_INET6 , protocol , sock -> type ) ; else request_module ( \"net-pf-%d-proto-%d\" , PF_INET6 , protocol ) ; goto lookup_protocol ; } else goto out_rcu_unlock ; } err = - EPERM ; if ( sock -> type == SOCK_RAW && ! kern && ! ns_capable ( net -> user_ns , CAP_NET_RAW ) ) goto out_rcu_unlock ; sock -> ops = answer -> ops ; answer_prot = answer -> prot ; answer_flags = answer -> flags ; rcu_read_unlock ( ) ; WARN_ON ( ! answer_prot -> slab ) ; err = - ENOBUFS ; sk = sk_alloc ( net , PF_INET6 , GFP_KERNEL , answer_prot , kern ) ; if ( ! sk ) goto out ; sock_init_data ( sock , sk ) ; err = 0 ; if ( INET_PROTOSW_REUSE & answer_flags ) sk -> sk_reuse = SK_CAN_REUSE ; inet = inet_sk ( sk ) ; inet -> is_icsk = ( INET_PROTOSW_ICSK & answer_flags ) != 0 ; if ( SOCK_RAW == sock -> type ) { inet -> inet_num = protocol ; if ( IPPROTO_RAW == protocol ) inet -> hdrincl = 1 ; } sk -> sk_destruct = inet_sock_destruct ; sk -> sk_family = PF_INET6 ; sk -> sk_protocol = protocol ; sk -> sk_backlog_rcv = answer -> prot -> backlog_rcv ; inet_sk ( sk ) -> pinet6 = np = inet6_sk_generic ( sk ) ; np -> hop_limit = - 1 ; np -> mcast_hops = IPV6_DEFAULT_MCASTHOPS ; np -> mc_loop = 1 ; np -> pmtudisc = IPV6_PMTUDISC_WANT ; np -> autoflowlabel = ip6_default_np_autolabel ( sock_net ( sk ) ) ; sk -> sk_ipv6only = net -> ipv6 . sysctl . bindv6only ; inet -> uc_ttl = - 1 ; inet -> mc_loop = 1 ; inet -> mc_ttl = 1 ; inet -> mc_index = 0 ; inet -> mc_list = NULL ; inet -> rcv_tos = 0 ; if ( net -> ipv4 . sysctl_ip_no_pmtu_disc ) inet -> pmtudisc = IP_PMTUDISC_DONT ; else inet -> pmtudisc = IP_PMTUDISC_WANT ; sk_refcnt_debug_inc ( sk ) ; if ( inet -> inet_num ) { inet -> inet_sport = htons ( inet -> inet_num ) ; sk -> sk_prot -> hash ( sk ) ; } if ( sk -> sk_prot -> init ) { err = sk -> sk_prot -> init ( sk ) ; if ( err ) { sk_common_release ( sk ) ; goto out ; } } out : return err ; out_rcu_unlock : rcu_read_unlock ( ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int err ; if ( protocol < 0 || protocol >= IPPROTO_MAX ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3735\n\n```\nCWE-119 unsigned int X509v3_addr_get_afi ( const IPAddressFamily * f ) { <S2SV_StartBug> return ( ( f != NULL && <S2SV_EndBug> <S2SV_StartBug> f -> addressFamily != NULL && f -> addressFamily -> data != NULL ) <S2SV_EndBug> <S2SV_StartBug> ? ( ( f -> addressFamily -> data [ 0 ] << 8 ) | ( f -> addressFamily -> data [ 1 ] ) ) <S2SV_EndBug> : 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> f ) { if ( f == NULL || <S2SV_ModEnd> f -> addressFamily <S2SV_ModStart> f -> addressFamily == NULL || <S2SV_ModEnd> f -> addressFamily <S2SV_ModStart> addressFamily -> data == NULL || f -> addressFamily -> length < 2 ) return 0 ; return <S2SV_ModEnd> ( f -> <S2SV_ModStart> 8 ) | <S2SV_ModEnd> f -> addressFamily <S2SV_ModStart> [ 1 ] <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15033\n\n```\nCWE-772 static Image * ReadYUVImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * chroma_image , * image , * resize_image ; InterlaceType interlace ; MagickBooleanType status ; register const Quantum * chroma_pixels ; register ssize_t x ; register Quantum * q ; register unsigned char * p ; ssize_t count , horizontal_factor , vertical_factor , y ; size_t length , quantum ; unsigned char * scanline ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( OptionError , \"MustSpecifyImageSize\" ) ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; quantum = ( ssize_t ) ( image -> depth <= 8 ? 1 : 2 ) ; interlace = image_info -> interlace ; horizontal_factor = 2 ; vertical_factor = 2 ; if ( image_info -> sampling_factor != ( char * ) NULL ) { GeometryInfo geometry_info ; MagickStatusType flags ; flags = ParseGeometry ( image_info -> sampling_factor , & geometry_info ) ; horizontal_factor = ( ssize_t ) geometry_info . rho ; vertical_factor = ( ssize_t ) geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) vertical_factor = horizontal_factor ; if ( ( horizontal_factor != 1 ) && ( horizontal_factor != 2 ) && ( vertical_factor != 1 ) && ( vertical_factor != 2 ) ) ThrowReaderException ( CorruptImageError , \"UnexpectedSamplingFactor\" ) ; } if ( ( interlace == UndefinedInterlace ) || ( ( interlace == NoInterlace ) && ( vertical_factor == 2 ) ) ) { interlace = NoInterlace ; if ( vertical_factor == 2 ) interlace = PlaneInterlace ; } if ( interlace != PartitionInterlace ) { status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( DiscardBlobBytes ( image , ( MagickSizeType ) image -> offset ) == MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } if ( interlace == NoInterlace ) scanline = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( 2UL * image -> columns + 2UL ) , ( size_t ) quantum * sizeof ( * scanline ) ) ; else scanline = ( unsigned char * ) AcquireQuantumMemory ( image -> columns , ( size_t ) quantum * sizeof ( * scanline ) ) ; if ( scanline == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; status = MagickTrue ; do { chroma_image = CloneImage ( image , ( image -> columns + horizontal_factor - 1 ) / horizontal_factor , ( image -> rows + vertical_factor - 1 ) / vertical_factor , MagickTrue , exception ) ; if ( chroma_image == ( Image * ) NULL ) <S2SV_StartBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_EndBug> if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; if ( interlace == PartitionInterlace ) { AppendImageFormat ( \"Y\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { <S2SV_StartBug> image = DestroyImageList ( image ) ; <S2SV_EndBug> return ( ( Image * ) NULL ) ; } } for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register Quantum * chroma_pixels ; if ( interlace == NoInterlace ) { if ( ( y > 0 ) || ( GetPreviousImageInList ( image ) == ( Image * ) NULL ) ) { length = 2 * quantum * image -> columns ; count = ReadBlob ( image , length , scanline ) ; if ( count != ( ssize_t ) length ) { status = MagickFalse ; ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } p = scanline ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; chroma_pixels = QueueAuthenticPixels ( chroma_image , 0 , y , chroma_image -> columns , 1 , exception ) ; if ( chroma_pixels == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x += 2 ) { SetPixelRed ( chroma_image , 0 , chroma_pixels ) ; if ( quantum == 1 ) SetPixelGreen ( chroma_image , ScaleCharToQuantum ( * p ++ ) , chroma_pixels ) ; else { SetPixelGreen ( chroma_image , ScaleShortToQuantum ( ( ( * p ) << 8 ) | * ( p + 1 ) ) , chroma_pixels ) ; p += 2 ; } if ( quantum == 1 ) SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; else { SetPixelRed ( image , ScaleShortToQuantum ( ( ( * p ) << 8 ) | * ( p + 1 ) ) , q ) ; p += 2 ; } SetPixelGreen ( image , 0 , q ) ; SetPixelBlue ( image , 0 , q ) ; q += GetPixelChannels ( image ) ; SetPixelGreen ( image , 0 , q ) ; SetPixelBlue ( image , 0 , q ) ; if ( quantum == 1 ) SetPixelBlue ( chroma_image , ScaleCharToQuantum ( * p ++ ) , chroma_pixels ) ; else { SetPixelBlue ( chroma_image , ScaleShortToQuantum ( ( ( * p ) << 8 ) | * ( p + 1 ) ) , chroma_pixels ) ; p += 2 ; } if ( quantum == 1 ) SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; else { SetPixelRed ( image , ScaleShortToQuantum ( ( ( * p ) << 8 ) | * ( p + 1 ) ) , q ) ; p += 2 ; } chroma_pixels += GetPixelChannels ( chroma_image ) ; q += GetPixelChannels ( image ) ; } } else { if ( ( y > 0 ) || ( GetPreviousImageInList ( image ) == ( Image * ) NULL ) ) { length = quantum * image -> columns ; count = ReadBlob ( image , length , scanline ) ; if ( count != ( ssize_t ) length ) { status = MagickFalse ; ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } p = scanline ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( quantum == 1 ) SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; else { SetPixelRed ( image , ScaleShortToQuantum ( ( ( * p ) << 8 ) | * ( p + 1 ) ) , q ) ; p += 2 ; } SetPixelGreen ( image , 0 , q ) ; SetPixelBlue ( image , 0 , q ) ; q += GetPixelChannels ( image ) ; } } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( interlace == NoInterlace ) if ( SyncAuthenticPixels ( chroma_image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( interlace == PartitionInterlace ) { ( void ) CloseBlob ( image ) ; AppendImageFormat ( \"U\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { <S2SV_StartBug> image = DestroyImageList ( image ) ; <S2SV_EndBug> return ( ( Image * ) NULL ) ; } } if ( interlace != NoInterlace ) { for ( y = 0 ; y < ( ssize_t ) chroma_image -> rows ; y ++ ) { length = quantum * chroma_image -> columns ; count = ReadBlob ( image , length , scanline ) ; if ( count != ( ssize_t ) length ) { status = MagickFalse ; ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } p = scanline ; q = QueueAuthenticPixels ( chroma_image , 0 , y , chroma_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) chroma_image -> columns ; x ++ ) { SetPixelRed ( chroma_image , 0 , q ) ; if ( quantum == 1 ) SetPixelGreen ( chroma_image , ScaleCharToQuantum ( * p ++ ) , q ) ; else { SetPixelGreen ( chroma_image , ScaleShortToQuantum ( ( ( * p ) << 8 ) | * ( p + 1 ) ) , q ) ; p += 2 ; } SetPixelBlue ( chroma_image , 0 , q ) ; q += GetPixelChannels ( chroma_image ) ; } if ( SyncAuthenticPixels ( chroma_image , exception ) == MagickFalse ) break ; } if ( interlace == PartitionInterlace ) { ( void ) CloseBlob ( image ) ; AppendImageFormat ( \"V\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { <S2SV_StartBug> image = DestroyImageList ( image ) ; <S2SV_EndBug> return ( ( Image * ) NULL ) ; } } for ( y = 0 ; y < ( ssize_t ) chroma_image -> rows ; y ++ ) { length = quantum * chroma_image -> columns ; count = ReadBlob ( image , length , scanline ) ; if ( count != ( ssize_t ) length ) { status = MagickFalse ; ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } p = scanline ; q = GetAuthenticPixels ( chroma_image , 0 , y , chroma_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) chroma_image -> columns ; x ++ ) { if ( quantum == 1 ) SetPixelBlue ( chroma_image , ScaleCharToQuantum ( * p ++ ) , q ) ; else { SetPixelBlue ( chroma_image , ScaleShortToQuantum ( ( ( * p ) << 8 ) | * ( p + 1 ) ) , q ) ; p += 2 ; } q += GetPixelChannels ( chroma_image ) ; } if ( SyncAuthenticPixels ( chroma_image , exception ) == MagickFalse ) break ; } } resize_image = ResizeImage ( chroma_image , image -> columns , image -> rows , TriangleFilter , exception ) ; chroma_image = DestroyImage ( chroma_image ) ; if ( resize_image == ( Image * ) NULL ) <S2SV_StartBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_EndBug> for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; chroma_pixels = GetVirtualPixels ( resize_image , 0 , y , resize_image -> columns , 1 , exception ) ; if ( ( q == ( Quantum * ) NULL ) || ( chroma_pixels == ( const Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelGreen ( image , GetPixelGreen ( resize_image , chroma_pixels ) , q ) ; SetPixelBlue ( image , GetPixelBlue ( resize_image , chroma_pixels ) , q ) ; chroma_pixels += GetPixelChannels ( resize_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } resize_image = DestroyImage ( resize_image ) ; if ( SetImageColorspace ( image , YCbCrColorspace , exception ) == MagickFalse ) break ; if ( interlace == PartitionInterlace ) ( void ) CopyMagickString ( image -> filename , image_info -> filename , MagickPathExtent ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( interlace == NoInterlace ) count = ReadBlob ( image , ( size_t ) ( 2 * quantum * image -> columns ) , scanline ) ; else count = ReadBlob ( image , ( size_t ) quantum * image -> columns , scanline ) ; if ( count != 0 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { <S2SV_StartBug> image = DestroyImageList ( image ) ; <S2SV_EndBug> return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( count != 0 ) ; scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) NULL ) { scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; <S2SV_ModStart> \"MemoryAllocationFailed\" ) ; } <S2SV_ModStart> MagickFalse ) { scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; <S2SV_ModStart> MagickFalse ) { scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; <S2SV_ModStart> MagickFalse ) { scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; <S2SV_ModStart> ) NULL ) { scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; <S2SV_ModStart> \"MemoryAllocationFailed\" ) ; } <S2SV_ModStart> NULL ) { scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5940\n\n```\nCWE-269 static void skel ( const char * homedir , uid_t u , gid_t g ) { char * fname ; if ( arg_zsh ) { if ( asprintf ( & fname , \"%s/.zshrc\" , homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( fname , & s ) == 0 ) return ; <S2SV_StartBug> if ( stat ( \"/etc/skel/.zshrc\" , & s ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> if ( is_link ( \"/etc/skel/.zshrc\" ) ) { <S2SV_EndBug> <S2SV_StartBug> fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>/etc/skel/.zshrc<S2SV_blank>file\\\\n\" ) ; <S2SV_EndBug> exit ( 1 ) ; } <S2SV_StartBug> if ( copy_file ( \"/etc/skel/.zshrc\" , fname ) == 0 ) { <S2SV_EndBug> if ( chown ( fname , u , g ) == - 1 ) <S2SV_StartBug> errExit ( \"chown\" ) ; <S2SV_EndBug> <S2SV_StartBug> fs_logger ( \"clone<S2SV_blank>/etc/skel/.zshrc\" ) ; <S2SV_EndBug> } } else { FILE * fp = fopen ( fname , \"w\" ) ; if ( fp ) { fprintf ( fp , \"\\\\n\" ) ; fclose ( fp ) ; if ( chown ( fname , u , g ) == - 1 ) errExit ( \"chown\" ) ; if ( chmod ( fname , S_IRUSR | S_IWUSR ) < 0 ) errExit ( \"chown\" ) ; fs_logger2 ( \"touch\" , fname ) ; } } free ( fname ) ; } <S2SV_StartBug> else if ( arg_csh ) { <S2SV_EndBug> if ( asprintf ( & fname , \"%s/.cshrc\" , homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( fname , & s ) == 0 ) return ; if ( stat ( \"/etc/skel/.cshrc\" , & s ) == 0 ) { if ( is_link ( \"/etc/skel/.cshrc\" ) ) { fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>/etc/skel/.cshrc<S2SV_blank>file\\\\n\" ) ; exit ( 1 ) ; } if ( copy_file ( \"/etc/skel/.cshrc\" , fname ) == 0 ) { if ( chown ( fname , u , g ) == - 1 ) errExit ( \"chown\" ) ; fs_logger ( \"clone<S2SV_blank>/etc/skel/.cshrc\" ) ; } } else { FILE * fp = fopen ( fname , \"w\" ) ; if ( fp ) { fprintf ( fp , \"\\\\n\" ) ; fclose ( fp ) ; if ( chown ( fname , u , g ) == - 1 ) errExit ( \"chown\" ) ; if ( chmod ( fname , S_IRUSR | S_IWUSR ) < 0 ) errExit ( \"chown\" ) ; fs_logger2 ( \"touch\" , fname ) ; } } free ( fname ) ; } else { if ( asprintf ( & fname , \"%s/.bashrc\" , homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( fname , & s ) == 0 ) return ; if ( stat ( \"/etc/skel/.bashrc\" , & s ) == 0 ) { if ( is_link ( \"/etc/skel/.bashrc\" ) ) { fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>/etc/skel/.bashrc<S2SV_blank>file\\\\n\" ) ; exit ( 1 ) ; } if ( copy_file ( \"/etc/skel/.bashrc\" , fname ) == 0 ) { if ( chown ( fname , u , g ) == - 1 ) errExit ( \"chown\" ) ; fs_logger ( \"clone<S2SV_blank>/etc/skel/.bashrc\" ) ; } } free ( fname ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( is_link ( fname ) ) { fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>%s<S2SV_blank>file\\\\n\" , fname ) ; exit ( 1 ) ; } if ( <S2SV_ModStart> 0 ) { copy_file_as_user ( \"/etc/skel/.zshrc\" , fname , u , g , 0644 ) ; fs_logger ( \"clone<S2SV_blank>/etc/skel/.zshrc\" ) ; } else { touch_file_as_user ( fname , u , g , 0644 ) ; fs_logger2 ( \"touch\" , fname ) ; } free ( fname ) ; } else if ( arg_csh ) { if ( asprintf ( & fname , \"%s/.cshrc\" , homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( fname , & s ) == 0 ) return ; <S2SV_ModStart> ( is_link ( fname <S2SV_ModEnd> ) ) { <S2SV_ModStart> ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>%s<S2SV_blank>file\\\\n\" , fname <S2SV_ModEnd> ) ; exit <S2SV_ModStart> } if ( stat ( \"/etc/skel/.cshrc\" , & s ) == 0 ) { copy_file_as_user ( \"/etc/skel/.cshrc\" , fname , u , g , 0644 ) ; fs_logger ( \"clone<S2SV_blank>/etc/skel/.cshrc\" ) ; } else { touch_file_as_user ( fname , u , g , 0644 ) ; fs_logger2 ( \"touch\" , fname ) ; } free ( fname ) ; } else { if ( asprintf ( & fname , \"%s/.bashrc\" , homedir <S2SV_ModEnd> ) == - <S2SV_ModStart> ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( fname , & s ) == 0 ) return ; if ( is_link ( fname ) ) { fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>%s<S2SV_blank>file\\\\n\" , fname ) ; exit ( 1 ) ; } if ( stat ( \"/etc/skel/.bashrc\" , & s ) == 0 ) { copy_file_as_user ( \"/etc/skel/.bashrc\" , fname , u , g , 0644 <S2SV_ModEnd> ) ; fs_logger <S2SV_ModStart> ; fs_logger ( \"clone<S2SV_blank>/etc/skel/.bashrc\" ) ; <S2SV_ModEnd> } free ( <S2SV_ModStart> ) ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 qboolean S_AL_Init ( soundInterface_t * si ) { # ifdef USE_OPENAL const char * device = NULL ; const char * inputdevice = NULL ; int i ; if ( ! si ) { return qfalse ; } for ( i = 0 ; i < MAX_RAW_STREAMS ; i ++ ) { streamSourceHandles [ i ] = - 1 ; streamPlaying [ i ] = qfalse ; streamSources [ i ] = 0 ; streamNumBuffers [ i ] = 0 ; streamBufIndex [ i ] = 0 ; } s_alPrecache = Cvar_Get ( \"s_alPrecache\" , \"1\" , CVAR_ARCHIVE ) ; s_alGain = Cvar_Get ( \"s_alGain\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alSources = Cvar_Get ( \"s_alSources\" , \"96\" , CVAR_ARCHIVE ) ; s_alDopplerFactor = Cvar_Get ( \"s_alDopplerFactor\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alDopplerSpeed = Cvar_Get ( \"s_alDopplerSpeed\" , \"9000\" , CVAR_ARCHIVE ) ; s_alMinDistance = Cvar_Get ( \"s_alMinDistance\" , \"120\" , CVAR_CHEAT ) ; s_alMaxDistance = Cvar_Get ( \"s_alMaxDistance\" , \"1024\" , CVAR_CHEAT ) ; s_alRolloff = Cvar_Get ( \"s_alRolloff\" , \"2\" , CVAR_CHEAT ) ; s_alGraceDistance = Cvar_Get ( \"s_alGraceDistance\" , \"512\" , CVAR_CHEAT ) ; <S2SV_StartBug> s_alDriver = Cvar_Get ( \"s_alDriver\" , ALDRIVER_DEFAULT , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> s_alInputDevice = Cvar_Get ( \"s_alInputDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_StartBug> s_alDevice = Cvar_Get ( \"s_alDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> if ( ! QAL_Init ( s_alDriver -> string ) ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>library:<S2SV_blank>\\\\\"%s\\\\\".\\\\n\" , s_alDriver -> string ) ; if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) || ! QAL_Init ( ALDRIVER_DEFAULT ) ) { return qfalse ; } } device = s_alDevice -> string ; if ( device && ! * device ) device = NULL ; inputdevice = s_alInputDevice -> string ; if ( inputdevice && ! * inputdevice ) inputdevice = NULL ; enumeration_all_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATE_ALL_EXT\" ) ; enumeration_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATION_EXT\" ) ; if ( enumeration_ext || enumeration_all_ext ) { char devicenames [ 16384 ] = \"\" ; const char * devicelist ; # ifdef _WIN32 const char * defaultdevice ; # endif int curlen ; if ( enumeration_all_ext ) { devicelist = qalcGetString ( NULL , ALC_ALL_DEVICES_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_ALL_DEVICES_SPECIFIER ) ; # endif } else { devicelist = qalcGetString ( NULL , ALC_DEVICE_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_DEVICE_SPECIFIER ) ; # endif enumeration_ext = qtrue ; } # ifdef _WIN32 if ( ! device && defaultdevice && ! strcmp ( defaultdevice , \"Generic<S2SV_blank>Hardware\" ) ) device = \"Generic<S2SV_blank>Software\" ; # endif if ( devicelist ) { while ( ( curlen = strlen ( devicelist ) ) ) { Q_strcat ( devicenames , sizeof ( devicenames ) , devicelist ) ; Q_strcat ( devicenames , sizeof ( devicenames ) , \"\\\\n\" ) ; devicelist += curlen + 1 ; } } s_alAvailableDevices = Cvar_Get ( \"s_alAvailableDevices\" , devicenames , CVAR_ROM | CVAR_NORESTART ) ; } alDevice = qalcOpenDevice ( device ) ; if ( ! alDevice && device ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , device ) ; alDevice = qalcOpenDevice ( NULL ) ; } if ( ! alDevice ) { QAL_Shutdown ( ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device.\\\\n\" ) ; return qfalse ; } alContext = qalcCreateContext ( alDevice , NULL ) ; if ( ! alContext ) { QAL_Shutdown ( ) ; qalcCloseDevice ( alDevice ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>OpenAL<S2SV_blank>context.\\\\n\" ) ; return qfalse ; } qalcMakeContextCurrent ( alContext ) ; S_AL_BufferInit ( ) ; S_AL_SrcInit ( ) ; qalDistanceModel ( AL_INVERSE_DISTANCE_CLAMPED ) ; qalDopplerFactor ( s_alDopplerFactor -> value ) ; qalSpeedOfSound ( s_alDopplerSpeed -> value ) ; # ifdef USE_VOIP s_alCapture = Cvar_Get ( \"s_alCapture\" , \"1\" , CVAR_ARCHIVE | CVAR_LATCH ) ; if ( ! s_alCapture -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>by<S2SV_blank>user<S2SV_blank>(\\'+set<S2SV_blank>s_alCapture<S2SV_blank>1\\'<S2SV_blank>to<S2SV_blank>enable)\\\\n\" ) ; } # if USE_MUMBLE else if ( cl_useMumble -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>for<S2SV_blank>Mumble<S2SV_blank>support\\\\n\" ) ; } # endif else { # ifdef __APPLE__ if ( qalcCaptureOpenDevice == NULL ) # else if ( ! qalcIsExtensionPresent ( NULL , \"ALC_EXT_capture\" ) ) # endif { Com_Printf ( \"No<S2SV_blank>ALC_EXT_capture<S2SV_blank>support,<S2SV_blank>can\\'t<S2SV_blank>record<S2SV_blank>audio.\\\\n\" ) ; } else { char inputdevicenames [ 16384 ] = \"\" ; const char * inputdevicelist ; const char * defaultinputdevice ; int curlen ; capture_ext = qtrue ; inputdevicelist = qalcGetString ( NULL , ALC_CAPTURE_DEVICE_SPECIFIER ) ; defaultinputdevice = qalcGetString ( NULL , ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER ) ; if ( inputdevicelist ) { while ( ( curlen = strlen ( inputdevicelist ) ) ) { Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , inputdevicelist ) ; Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , \"\\\\n\" ) ; inputdevicelist += curlen + 1 ; } } s_alAvailableInputDevices = Cvar_Get ( \"s_alAvailableInputDevices\" , inputdevicenames , CVAR_ROM | CVAR_NORESTART ) ; Com_Printf ( \"OpenAL<S2SV_blank>default<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>is<S2SV_blank>\\'%s\\'\\\\n\" , defaultinputdevice ? defaultinputdevice : \"none\" ) ; alCaptureDevice = qalcCaptureOpenDevice ( inputdevice , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; if ( ! alCaptureDevice && inputdevice ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>Input<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , inputdevice ) ; alCaptureDevice = qalcCaptureOpenDevice ( NULL , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; } Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>%s.\\\\n\" , ( alCaptureDevice == NULL ) ? \"failed<S2SV_blank>to<S2SV_blank>open\" : \"opened\" ) ; } } # endif si -> Shutdown = S_AL_Shutdown ; si -> StartSound = S_AL_StartSound ; si -> StartLocalSound = S_AL_StartLocalSound ; si -> StartBackgroundTrack = S_AL_StartBackgroundTrack ; si -> StopBackgroundTrack = S_AL_StopBackgroundTrack ; si -> RawSamples = S_AL_RawSamples ; si -> StopAllSounds = S_AL_StopAllSounds ; si -> ClearLoopingSounds = S_AL_ClearLoopingSounds ; si -> AddLoopingSound = S_AL_AddLoopingSound ; si -> AddRealLoopingSound = S_AL_AddRealLoopingSound ; si -> StopLoopingSound = S_AL_StopLoopingSound ; si -> Respatialize = S_AL_Respatialize ; si -> UpdateEntityPosition = S_AL_UpdateEntityPosition ; si -> Update = S_AL_Update ; si -> DisableSounds = S_AL_DisableSounds ; si -> BeginRegistration = S_AL_BeginRegistration ; si -> RegisterSound = S_AL_RegisterSound ; si -> ClearSoundBuffer = S_AL_ClearSoundBuffer ; si -> SoundInfo = S_AL_SoundInfo ; si -> SoundList = S_AL_SoundList ; # ifdef USE_VOIP si -> StartCapture = S_AL_StartCapture ; si -> AvailableCaptureSamples = S_AL_AvailableCaptureSamples ; si -> Capture = S_AL_Capture ; si -> StopCapture = S_AL_StopCapture ; si -> MasterGain = S_AL_MasterGain ; # endif return qtrue ; # else return qfalse ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CVAR_ARCHIVE | CVAR_LATCH | CVAR_PROTECTED <S2SV_ModStart> CVAR_LATCH ) ; if ( COM_CompareExtension ( s_alDriver -> string , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , s_alDriver -> string ) ; return qfalse ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_dma_restart_bh ( void * opaque ) { SCSIDiskState * s = opaque ; SCSIRequest * req ; SCSIDiskReq * r ; qemu_bh_delete ( s -> bh ) ; s -> bh = NULL ; QTAILQ_FOREACH ( req , & s -> qdev . requests , next ) { r = DO_UPCAST ( SCSIDiskReq , req , req ) ; if ( r -> status & SCSI_REQ_STATUS_RETRY ) { int status = r -> status ; int ret ; r -> status &= ~ ( SCSI_REQ_STATUS_RETRY | SCSI_REQ_STATUS_RETRY_TYPE_MASK ) ; switch ( status & SCSI_REQ_STATUS_RETRY_TYPE_MASK ) { case SCSI_REQ_STATUS_RETRY_READ : scsi_read_data ( & r -> req ) ; break ; case SCSI_REQ_STATUS_RETRY_WRITE : scsi_write_data ( & r -> req ) ; break ; case SCSI_REQ_STATUS_RETRY_FLUSH : <S2SV_StartBug> ret = scsi_disk_emulate_command ( r , r -> iov . iov_base ) ; <S2SV_EndBug> if ( ret == 0 ) { scsi_req_complete ( & r -> req , GOOD ) ; } } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> scsi_disk_emulate_command ( r <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12994\n\n```\nCWE-125 static int bgp_attr_print ( netdissect_options * ndo , u_int atype , const u_char * pptr , u_int len ) { int i ; uint16_t af ; uint8_t safi , snpa , nhlen ; union { float f ; uint32_t i ; } bw ; int advance ; u_int tlen ; const u_char * tptr ; char buf [ MAXHOSTNAMELEN + 100 ] ; int as_size ; tptr = pptr ; tlen = len ; switch ( atype ) { case BGPTYPE_ORIGIN : if ( len != 1 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK ( * tptr ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_origin_values , \"Unknown<S2SV_blank>Origin<S2SV_blank>Typecode\" , tptr [ 0 ] ) ) ) ; } break ; case BGPTYPE_AS4_PATH : case BGPTYPE_AS_PATH : if ( len % 2 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } if ( ! len ) { ND_PRINT ( ( ndo , \"empty\" ) ) ; break ; } as_size = bgp_attr_get_as_size ( ndo , atype , pptr , len ) ; while ( tptr < pptr + len ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_open_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; for ( i = 0 ; i < tptr [ 1 ] * as_size ; i += as_size ) { ND_TCHECK2 ( tptr [ 2 + i ] , as_size ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , as_printf ( ndo , astostr , sizeof ( astostr ) , as_size == 2 ? EXTRACT_16BITS ( & tptr [ 2 + i ] ) : EXTRACT_32BITS ( & tptr [ 2 + i ] ) ) ) ) ; } ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_close_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; tptr += 2 + tptr [ 1 ] * as_size ; } break ; case BGPTYPE_NEXT_HOP : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; } break ; case BGPTYPE_MULTI_EXIT_DISC : case BGPTYPE_LOCAL_PREF : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( tptr ) ) ) ; } break ; case BGPTYPE_ATOMIC_AGGREGATE : if ( len != 0 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; case BGPTYPE_AGGREGATOR : if ( len != 6 && len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , len ) ; if ( len == 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_16BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 2 ) ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; } break ; case BGPTYPE_AGGREGATOR4 : if ( len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGPTYPE_COMMUNITIES : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint32_t comm ; ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; comm = EXTRACT_32BITS ( tptr ) ; switch ( comm ) { case BGP_COMMUNITY_NO_EXPORT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT\" ) ) ; break ; case BGP_COMMUNITY_NO_ADVERT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_ADVERTISE\" ) ) ; break ; case BGP_COMMUNITY_NO_EXPORT_SUBCONFED : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT_SUBCONFED\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%u:%u%s\" , ( comm >> 16 ) & 0xffff , comm & 0xffff , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; break ; } tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_ORIGINATOR_ID : if ( len != 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGPTYPE_CLUSTER_LIST : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s%s\" , ipaddr_string ( ndo , tptr ) , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_MP_REACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; goto done ; break ; } tptr += 3 ; ND_TCHECK ( tptr [ 0 ] ) ; nhlen = tptr [ 0 ] ; tlen = nhlen ; tptr ++ ; if ( tlen ) { int nnh = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>nexthop:<S2SV_blank>\" ) ) ; while ( tlen > 0 ) { if ( nnh ++ > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; } switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in_addr ) ; tptr += sizeof ( struct in_addr ) ; } break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : if ( tlen < ( int ) sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in6_addr ) ; tptr += sizeof ( struct in6_addr ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= ( sizeof ( struct in_addr ) ) ; tptr += ( sizeof ( struct in_addr ) ) ; } break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"%s\" , isonsap_string ( ndo , tptr , tlen ) ) ) ; tptr += tlen ; tlen = 0 ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < BGP_VPN_RD_LEN + 1 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , isonsap_string ( ndo , tptr + BGP_VPN_RD_LEN , tlen - BGP_VPN_RD_LEN ) ) ) ; if ( EXTRACT_32BITS ( tptr + BGP_VPN_RD_LEN ) == 0x47000601 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN + 4 ) ) ) ; else if ( EXTRACT_24BITS ( tptr + BGP_VPN_RD_LEN ) == 0x350000 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN + 3 ) ) ) ; tptr += tlen ; tlen = 0 ; } break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u/SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; tptr += tlen ; tlen = 0 ; goto done ; break ; } } } ND_PRINT ( ( ndo , \",<S2SV_blank>nh-length:<S2SV_blank>%u\" , nhlen ) ) ; tptr += tlen ; ND_TCHECK ( tptr [ 0 ] ) ; snpa = tptr [ 0 ] ; tptr ++ ; if ( snpa ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>SNPA\" , snpa ) ) ; for ( ; snpa > 0 ; snpa -- ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d<S2SV_blank>bytes\" , tptr [ 0 ] ) ) ; tptr += tptr [ 0 ] + 1 ; } } else { ND_PRINT ( ( ndo , \",<S2SV_blank>no<S2SV_blank>SNPA\" ) ) ; } while ( len - ( tptr - pptr ) > 0 ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : advance = decode_rt_routing_info ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * tptr , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } done : break ; case BGPTYPE_MP_UNREACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , BGP_MP_NLRI_MINSIZE ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; if ( len == BGP_MP_NLRI_MINSIZE ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>End-of-Rib<S2SV_blank>Marker<S2SV_blank>(empty<S2SV_blank>NLRI)\" ) ) ; tptr += 3 ; while ( len - ( tptr - pptr ) > 0 ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * ( tptr - 3 ) , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr - 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } break ; case BGPTYPE_EXTD_COMMUNITIES : if ( len % 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint16_t extd_comm ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; extd_comm = EXTRACT_16BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>Flags<S2SV_blank>[%s]\" , tok2str ( bgp_extd_comm_subtype_values , \"unknown<S2SV_blank>extd<S2SV_blank>community<S2SV_blank>typecode\" , extd_comm ) , extd_comm , bittok2str ( bgp_extd_comm_flag_values , \"none\" , extd_comm ) ) ) ; ND_TCHECK2 ( * ( tptr + 2 ) , 6 ) ; switch ( extd_comm ) { case BGP_EXT_COM_RT_0 : case BGP_EXT_COM_RO_0 : case BGP_EXT_COM_L2VPN_RT_0 : ND_PRINT ( ( ndo , \":<S2SV_blank>%u:%u<S2SV_blank>(=<S2SV_blank>%s)\" , EXTRACT_16BITS ( tptr + 2 ) , EXTRACT_32BITS ( tptr + 4 ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_RT_1 : case BGP_EXT_COM_RO_1 : case BGP_EXT_COM_L2VPN_RT_1 : case BGP_EXT_COM_VRF_RT_IMP : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , ipaddr_string ( ndo , tptr + 2 ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_RT_2 : case BGP_EXT_COM_RO_2 : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr + 2 ) ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_LINKBAND : bw . i = EXTRACT_32BITS ( tptr + 2 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case BGP_EXT_COM_VPN_ORIGIN : case BGP_EXT_COM_VPN_ORIGIN2 : case BGP_EXT_COM_VPN_ORIGIN3 : case BGP_EXT_COM_VPN_ORIGIN4 : case BGP_EXT_COM_OSPF_RID : case BGP_EXT_COM_OSPF_RID2 : ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr + 2 ) ) ) ; break ; case BGP_EXT_COM_OSPF_RTYPE : case BGP_EXT_COM_OSPF_RTYPE2 : ND_PRINT ( ( ndo , \":<S2SV_blank>area:%s,<S2SV_blank>router-type:%s,<S2SV_blank>metric-type:%s%s\" , ipaddr_string ( ndo , tptr + 2 ) , tok2str ( bgp_extd_comm_ospf_rtype_values , \"unknown<S2SV_blank>(0x%02x)\" , * ( tptr + 6 ) ) , ( * ( tptr + 7 ) & BGP_OSPF_RTYPE_METRIC_TYPE ) ? \"E2\" : \"\" , ( ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_EXT ) || ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_NSSA ) ) ? \"E1\" : \"\" ) ) ; break ; case BGP_EXT_COM_L2INFO : ND_PRINT ( ( ndo , \":<S2SV_blank>%s<S2SV_blank>Control<S2SV_blank>Flags<S2SV_blank>[0x%02x]:MTU<S2SV_blank>%u\" , tok2str ( l2vpn_encaps_values , \"unknown<S2SV_blank>encaps\" , * ( tptr + 2 ) ) , * ( tptr + 3 ) , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_SOURCE_AS : ND_PRINT ( ( ndo , \":<S2SV_blank>AS<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 2 ) ) ) ; break ; default : ND_TCHECK2 ( * tptr , 8 ) ; print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , 8 ) ; break ; } tlen -= 8 ; tptr += 8 ; } break ; case BGPTYPE_PMSI_TUNNEL : { uint8_t tunnel_type , flags ; tunnel_type = * ( tptr + 1 ) ; flags = * tptr ; tlen = len ; ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>MPLS<S2SV_blank>Label<S2SV_blank>%u\" , tok2str ( bgp_pmsi_tunnel_values , \"Unknown\" , tunnel_type ) , tunnel_type , bittok2str ( bgp_pmsi_flag_values , \"none\" , flags ) , EXTRACT_24BITS ( tptr + 2 ) >> 4 ) ) ; tptr += 5 ; tlen -= 5 ; switch ( tunnel_type ) { case BGP_PMSI_TUNNEL_PIM_SM : case BGP_PMSI_TUNNEL_PIM_BIDIR : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sender<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_PIM_SSM : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_INGRESS : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-Endpoint<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGP_PMSI_TUNNEL_LDP_P2MP : case BGP_PMSI_TUNNEL_LDP_MP2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>LSP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_RSVP_P2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended-Tunnel-ID<S2SV_blank>%s,<S2SV_blank>P2MP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; } } break ; } case BGPTYPE_AIGP : { uint8_t type ; uint16_t length ; <S2SV_StartBug> ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; <S2SV_EndBug> <S2SV_StartBug> tlen = len ; <S2SV_EndBug> while ( tlen >= 3 ) { type = * tptr ; length = EXTRACT_16BITS ( tptr + 1 ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , <S2SV_EndBug> tok2str ( bgp_aigp_values , \"Unknown\" , type ) , <S2SV_StartBug> type , length ) ) ; <S2SV_EndBug> <S2SV_StartBug> ND_TCHECK2 ( tptr [ 3 ] , length - 3 ) ; <S2SV_EndBug> switch ( type ) { case BGP_AIGP_TLV : <S2SV_StartBug> ND_TCHECK2 ( tptr [ 3 ] , 8 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \",<S2SV_blank>metric<S2SV_blank>%\" PRIu64 , <S2SV_StartBug> EXTRACT_64BITS ( tptr + 3 ) ) ) ; <S2SV_EndBug> break ; default : if ( ndo -> ndo_vflag <= 1 ) { <S2SV_StartBug> print_unknown_data ( ndo , tptr + 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length - 3 ) ; <S2SV_EndBug> } } tptr += length ; tlen -= length ; } break ; } case BGPTYPE_ATTR_SET : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Origin<S2SV_blank>AS:<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) ) ) ; tptr += 4 ; len -= 4 ; while ( len ) { u_int aflags , alenlen , alen ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; if ( len < 2 ) goto trunc ; aflags = * tptr ; atype = * ( tptr + 1 ) ; tptr += 2 ; len -= 2 ; alenlen = bgp_attr_lenlen ( aflags , tptr ) ; ND_TCHECK2 ( tptr [ 0 ] , alenlen ) ; if ( len < alenlen ) goto trunc ; alen = bgp_attr_len ( aflags , tptr ) ; tptr += alenlen ; len -= alenlen ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_attr_values , \"Unknown<S2SV_blank>Attribute\" , atype ) , atype , alen ) ) ; if ( aflags ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s%s%s%s\" , aflags & 0x80 ? \"O\" : \"\" , aflags & 0x40 ? \"T\" : \"\" , aflags & 0x20 ? \"P\" : \"\" , aflags & 0x10 ? \"E\" : \"\" ) ) ; if ( aflags & 0xf ) ND_PRINT ( ( ndo , \"+%x\" , aflags & 0xf ) ) ; ND_PRINT ( ( ndo , \"]:<S2SV_blank>\" ) ) ; } if ( ! bgp_attr_print ( ndo , atype , tptr , alen ) ) return 0 ; tptr += alen ; len -= alen ; } break ; case BGPTYPE_LARGE_COMMUNITY : if ( len == 0 || len % 12 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; while ( len > 0 ) { ND_TCHECK2 ( * tptr , 12 ) ; ND_PRINT ( ( ndo , \"%u:%u:%u%s\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , ( len > 12 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tptr += 12 ; len -= 12 ; } break ; default : ND_TCHECK2 ( * pptr , len ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>Attribute<S2SV_blank>%u<S2SV_blank>decoder\" , atype ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; break ; } if ( ndo -> ndo_vflag > 1 && len ) { ND_TCHECK2 ( * pptr , len ) ; print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; } return 1 ; trunc : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint16_t length ; tlen = len ; while ( tlen >= 3 ) { <S2SV_ModStart> 3 ) ; <S2SV_ModEnd> type = * <S2SV_ModStart> 1 ) ; tptr += 3 ; tlen -= 3 ; <S2SV_ModStart> length ) ) ; if ( length < 3 ) goto trunc ; length -= 3 <S2SV_ModStart> ] , length <S2SV_ModEnd> ) ; switch <S2SV_ModStart> case BGP_AIGP_TLV : if ( length < 8 ) goto trunc <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> EXTRACT_64BITS ( tptr <S2SV_ModEnd> ) ) ) <S2SV_ModStart> ndo , tptr <S2SV_ModEnd> , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , <S2SV_ModStart> \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14064\n\n```\nCWE-119 static VALUE cState_object_nl_set ( VALUE self , VALUE object_nl ) { unsigned long len ; GET_STATE ( self ) ; Check_Type ( object_nl , T_STRING ) ; len = RSTRING_LEN ( object_nl ) ; if ( len == 0 ) { if ( state -> object_nl ) { ruby_xfree ( state -> object_nl ) ; state -> object_nl = NULL ; } } else { if ( state -> object_nl ) ruby_xfree ( state -> object_nl ) ; <S2SV_StartBug> state -> object_nl = strdup ( RSTRING_PTR ( object_nl ) ) ; <S2SV_EndBug> state -> object_nl_len = len ; } return Qnil ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> object_nl = fstrndup <S2SV_ModEnd> ( RSTRING_PTR ( <S2SV_ModStart> ( object_nl ) , len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35965\n\n```\nCWE-787 static int decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { EXRContext * s = avctx -> priv_data ; ThreadFrame frame = { . f = data } ; AVFrame * picture = data ; uint8_t * ptr ; int i , y , ret , ymax ; int planes ; int out_line_size ; int nb_blocks ; uint64_t start_offset_table ; uint64_t start_next_scanline ; PutByteContext offset_table_writer ; bytestream2_init ( & s -> gb , avpkt -> data , avpkt -> size ) ; if ( ( ret = decode_header ( s , picture ) ) < 0 ) return ret ; switch ( s -> pixel_type ) { case EXR_FLOAT : case EXR_HALF : if ( s -> channel_offsets [ 3 ] >= 0 ) { if ( ! s -> is_luma ) { avctx -> pix_fmt = AV_PIX_FMT_GBRAPF32 ; } else { avctx -> pix_fmt = AV_PIX_FMT_GBRAPF32 ; } } else { if ( ! s -> is_luma ) { avctx -> pix_fmt = AV_PIX_FMT_GBRPF32 ; } else { avctx -> pix_fmt = AV_PIX_FMT_GRAYF32 ; } } break ; case EXR_UINT : if ( s -> channel_offsets [ 3 ] >= 0 ) { if ( ! s -> is_luma ) { avctx -> pix_fmt = AV_PIX_FMT_RGBA64 ; } else { avctx -> pix_fmt = AV_PIX_FMT_YA16 ; } } else { if ( ! s -> is_luma ) { avctx -> pix_fmt = AV_PIX_FMT_RGB48 ; } else { avctx -> pix_fmt = AV_PIX_FMT_GRAY16 ; } } break ; default : av_log ( avctx , AV_LOG_ERROR , \"Missing<S2SV_blank>channel<S2SV_blank>list.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( s -> apply_trc_type != AVCOL_TRC_UNSPECIFIED ) avctx -> color_trc = s -> apply_trc_type ; switch ( s -> compression ) { case EXR_RAW : case EXR_RLE : case EXR_ZIP1 : s -> scan_lines_per_block = 1 ; break ; case EXR_PXR24 : case EXR_ZIP16 : s -> scan_lines_per_block = 16 ; break ; case EXR_PIZ : case EXR_B44 : case EXR_B44A : s -> scan_lines_per_block = 32 ; break ; default : avpriv_report_missing_feature ( avctx , \"Compression<S2SV_blank>%d\" , s -> compression ) ; return AVERROR_PATCHWELCOME ; } if ( s -> xmin > s -> xmax || s -> ymin > s -> ymax || s -> ydelta == 0xFFFFFFFF || s -> xdelta == 0xFFFFFFFF ) { av_log ( avctx , AV_LOG_ERROR , \"Wrong<S2SV_blank>or<S2SV_blank>missing<S2SV_blank>size<S2SV_blank>information.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( ( ret = ff_set_dimensions ( avctx , s -> w , s -> h ) ) < 0 ) return ret ; s -> desc = av_pix_fmt_desc_get ( avctx -> pix_fmt ) ; if ( ! s -> desc ) return AVERROR_INVALIDDATA ; if ( s -> desc -> flags & AV_PIX_FMT_FLAG_FLOAT ) { planes = s -> desc -> nb_components ; out_line_size = avctx -> width * 4 ; } else { planes = 1 ; out_line_size = avctx -> width * 2 * s -> desc -> nb_components ; } if ( s -> is_tile ) { nb_blocks = ( ( s -> xdelta + s -> tile_attr . xSize - 1 ) / s -> tile_attr . xSize ) * ( ( s -> ydelta + s -> tile_attr . ySize - 1 ) / s -> tile_attr . ySize ) ; } else { nb_blocks = ( s -> ydelta + s -> scan_lines_per_block - 1 ) / s -> scan_lines_per_block ; } if ( ( ret = ff_thread_get_buffer ( avctx , & frame , 0 ) ) < 0 ) return ret ; if ( bytestream2_get_bytes_left ( & s -> gb ) / 8 < nb_blocks ) return AVERROR_INVALIDDATA ; if ( ! s -> is_tile && bytestream2_peek_le64 ( & s -> gb ) == 0 ) { av_log ( s -> avctx , AV_LOG_DEBUG , \"recreating<S2SV_blank>invalid<S2SV_blank>scanline<S2SV_blank>offset<S2SV_blank>table\\\\n\" ) ; start_offset_table = bytestream2_tell ( & s -> gb ) ; start_next_scanline = start_offset_table + nb_blocks * 8 ; bytestream2_init_writer ( & offset_table_writer , & avpkt -> data [ start_offset_table ] , nb_blocks * 8 ) ; for ( y = 0 ; y < nb_blocks ; y ++ ) { bytestream2_put_le64 ( & offset_table_writer , start_next_scanline ) ; bytestream2_seek ( & s -> gb , start_next_scanline + 4 , SEEK_SET ) ; start_next_scanline += ( bytestream2_get_le32 ( & s -> gb ) + 8 ) ; } bytestream2_seek ( & s -> gb , start_offset_table , SEEK_SET ) ; } s -> buf = avpkt -> data ; s -> buf_size = avpkt -> size ; for ( i = 0 ; i < planes ; i ++ ) { ptr = picture -> data [ i ] ; <S2SV_StartBug> for ( y = 0 ; y < s -> ymin ; y ++ ) { <S2SV_EndBug> memset ( ptr , 0 , out_line_size ) ; ptr += picture -> linesize [ i ] ; } } s -> picture = picture ; avctx -> execute2 ( avctx , decode_block , s -> thread_data , NULL , nb_blocks ) ; ymax = FFMAX ( 0 , s -> ymax + 1 ) ; for ( i = 0 ; i < planes ; i ++ ) { ptr = picture -> data [ i ] + ( ymax * picture -> linesize [ i ] ) ; for ( y = ymax ; y < avctx -> height ; y ++ ) { memset ( ptr , 0 , out_line_size ) ; ptr += picture -> linesize [ i ] ; } } picture -> pict_type = AV_PICTURE_TYPE_I ; * got_frame = 1 ; return avpkt -> size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; y < FFMIN ( <S2SV_ModStart> s -> ymin , s -> h )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2706\n\n```\nCWE-362 void ieee80211_sta_ps_deliver_wakeup ( struct sta_info * sta ) { struct ieee80211_sub_if_data * sdata = sta -> sdata ; struct ieee80211_local * local = sdata -> local ; struct sk_buff_head pending ; int filtered = 0 , buffered = 0 , ac ; unsigned long flags ; clear_sta_flag ( sta , WLAN_STA_SP ) ; BUILD_BUG_ON ( BITS_TO_LONGS ( IEEE80211_NUM_TIDS ) > 1 ) ; sta -> driver_buffered_tids = 0 ; if ( ! ( local -> hw . flags & IEEE80211_HW_AP_LINK_PS ) ) drv_sta_notify ( local , sdata , STA_NOTIFY_AWAKE , & sta -> sta ) ; skb_queue_head_init ( & pending ) ; <S2SV_StartBug> for ( ac = 0 ; ac < IEEE80211_NUM_ACS ; ac ++ ) { <S2SV_EndBug> int count = skb_queue_len ( & pending ) , tmp ; spin_lock_irqsave ( & sta -> tx_filtered [ ac ] . lock , flags ) ; skb_queue_splice_tail_init ( & sta -> tx_filtered [ ac ] , & pending ) ; spin_unlock_irqrestore ( & sta -> tx_filtered [ ac ] . lock , flags ) ; tmp = skb_queue_len ( & pending ) ; filtered += tmp - count ; count = tmp ; spin_lock_irqsave ( & sta -> ps_tx_buf [ ac ] . lock , flags ) ; skb_queue_splice_tail_init ( & sta -> ps_tx_buf [ ac ] , & pending ) ; spin_unlock_irqrestore ( & sta -> ps_tx_buf [ ac ] . lock , flags ) ; tmp = skb_queue_len ( & pending ) ; buffered += tmp - count ; } <S2SV_StartBug> ieee80211_add_pending_skbs_fn ( local , & pending , clear_sta_ps_flags , sta ) ; <S2SV_EndBug> if ( ! ieee80211_smps_is_restrictive ( sta -> known_smps_mode , sdata -> smps_mode ) && sta -> known_smps_mode != sdata -> bss -> req_smps && sta_info_tx_streams ( sta ) != 1 ) { ht_dbg ( sdata , \"%pM<S2SV_blank>just<S2SV_blank>woke<S2SV_blank>up<S2SV_blank>and<S2SV_blank>MIMO<S2SV_blank>capable<S2SV_blank>-<S2SV_blank>update<S2SV_blank>SMPS\\\\n\" , sta -> sta . addr ) ; ieee80211_send_smps_action ( sdata , sdata -> bss -> req_smps , sta -> sta . addr , sdata -> vif . bss_conf . bssid ) ; } local -> total_ps_buffered -= buffered ; sta_info_recalc_tim ( sta ) ; ps_dbg ( sdata , \"STA<S2SV_blank>%pM<S2SV_blank>aid<S2SV_blank>%d<S2SV_blank>sending<S2SV_blank>%d<S2SV_blank>filtered/%d<S2SV_blank>PS<S2SV_blank>frames<S2SV_blank>since<S2SV_blank>STA<S2SV_blank>not<S2SV_blank>sleeping<S2SV_blank>anymore\\\\n\" , sta -> sta . addr , sta -> sta . aid , filtered , buffered ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pending ) ; spin_lock ( & sta -> ps_lock ) ; <S2SV_ModStart> clear_sta_ps_flags , sta ) ; spin_unlock ( & sta -> ps_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 static void prefetch_enc ( void ) { <S2SV_StartBug> prefetch_table ( ( const void * ) encT , sizeof ( encT ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { enc_tables . counter_head ++ ; enc_tables . counter_tail ++ ; <S2SV_ModStart> void * ) & enc_tables <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> , sizeof ( enc_tables <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 struct monitor * monitor_init ( void ) { <S2SV_StartBug> struct ssh * ssh = active_state ; <S2SV_EndBug> struct monitor * mon ; mon = xcalloc ( 1 , sizeof ( * mon ) ) ; monitor_openfds ( mon , 1 ) ; <S2SV_StartBug> if ( options . compression ) { <S2SV_EndBug> mon -> m_zback = mm_create ( NULL , MM_MEMSIZE ) ; mon -> m_zlib = mm_create ( mon -> m_zback , 20 * MM_MEMSIZE ) ; ssh_packet_set_compress_hooks ( ssh , mon -> m_zlib , ( ssh_packet_comp_alloc_func * ) mm_zalloc , ( ssh_packet_comp_free_func * ) mm_zfree ) ; } return mon ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { <S2SV_ModEnd> struct monitor * <S2SV_ModStart> 1 ) ; <S2SV_ModEnd> return mon ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16790\n\n```\nCWE-125 static bool _bson_iter_next_internal ( bson_iter_t * iter , uint32_t next_keylen , const char * * key , uint32_t * bson_type , bool * unsupported ) { const uint8_t * data ; uint32_t o ; unsigned int len ; BSON_ASSERT ( iter ) ; * unsupported = false ; if ( ! iter -> raw ) { * key = NULL ; * bson_type = BSON_TYPE_EOD ; return false ; } data = iter -> raw ; len = iter -> len ; iter -> off = iter -> next_off ; iter -> type = iter -> off ; iter -> key = iter -> off + 1 ; iter -> d1 = 0 ; iter -> d2 = 0 ; iter -> d3 = 0 ; iter -> d4 = 0 ; if ( next_keylen == 0 ) { for ( o = iter -> key ; o < len ; o ++ ) { if ( ! data [ o ] ) { iter -> d1 = ++ o ; goto fill_data_fields ; } } } else { o = iter -> key + next_keylen + 1 ; iter -> d1 = o ; goto fill_data_fields ; } goto mark_invalid ; fill_data_fields : * key = bson_iter_key_unsafe ( iter ) ; * bson_type = ITER_TYPE ( iter ) ; switch ( * bson_type ) { case BSON_TYPE_DATE_TIME : case BSON_TYPE_DOUBLE : case BSON_TYPE_INT64 : case BSON_TYPE_TIMESTAMP : iter -> next_off = o + 8 ; break ; case BSON_TYPE_CODE : case BSON_TYPE_SYMBOL : case BSON_TYPE_UTF8 : { uint32_t l ; if ( ( o + 4 ) >= len ) { iter -> err_off = o ; goto mark_invalid ; } iter -> d2 = o + 4 ; memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( l > ( len - ( o + 4 ) ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> next_off = o + 4 + l ; if ( BSON_UNLIKELY ( ( l == 0 ) || ( iter -> next_off >= len ) ) ) { iter -> err_off = o ; goto mark_invalid ; } if ( BSON_UNLIKELY ( ( iter -> raw + iter -> d2 ) [ l - 1 ] != '\\\\0' ) ) { iter -> err_off = o + 4 + l - 1 ; goto mark_invalid ; } } break ; case BSON_TYPE_BINARY : { bson_subtype_t subtype ; uint32_t l ; if ( o >= ( len - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> d2 = o + 4 ; iter -> d3 = o + 5 ; memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; <S2SV_StartBug> if ( l >= ( len - o ) ) { <S2SV_EndBug> iter -> err_off = o ; goto mark_invalid ; } subtype = * ( iter -> raw + iter -> d2 ) ; if ( subtype == BSON_SUBTYPE_BINARY_DEPRECATED ) { int32_t binary_len ; if ( l < 4 ) { iter -> err_off = o ; goto mark_invalid ; } memcpy ( & binary_len , ( iter -> raw + iter -> d3 ) , sizeof ( binary_len ) ) ; binary_len = BSON_UINT32_FROM_LE ( binary_len ) ; if ( binary_len + 4 != l ) { iter -> err_off = iter -> d3 ; goto mark_invalid ; } } iter -> next_off = o + 5 + l ; } break ; case BSON_TYPE_ARRAY : case BSON_TYPE_DOCUMENT : { uint32_t l ; if ( o >= ( len - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( ( l > len ) || ( l > ( len - o ) ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> next_off = o + l ; } break ; case BSON_TYPE_OID : iter -> next_off = o + 12 ; break ; case BSON_TYPE_BOOL : { char val ; if ( iter -> d1 >= len ) { iter -> err_off = o ; goto mark_invalid ; } memcpy ( & val , iter -> raw + iter -> d1 , 1 ) ; if ( val != 0x00 && val != 0x01 ) { iter -> err_off = o ; goto mark_invalid ; } iter -> next_off = o + 1 ; } break ; case BSON_TYPE_REGEX : { bool eor = false ; bool eoo = false ; for ( ; o < len ; o ++ ) { if ( ! data [ o ] ) { iter -> d2 = ++ o ; eor = true ; break ; } } if ( ! eor ) { iter -> err_off = iter -> next_off ; goto mark_invalid ; } for ( ; o < len ; o ++ ) { if ( ! data [ o ] ) { eoo = true ; break ; } } if ( ! eoo ) { iter -> err_off = iter -> next_off ; goto mark_invalid ; } iter -> next_off = o + 1 ; } break ; case BSON_TYPE_DBPOINTER : { uint32_t l ; if ( o >= ( len - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> d2 = o + 4 ; memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( l == 0 || l > ( len - o - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } if ( * ( iter -> raw + o + l + 3 ) ) { iter -> err_off = o + l + 3 ; goto mark_invalid ; } iter -> d3 = o + 4 + l ; iter -> next_off = o + 4 + l + 12 ; } break ; case BSON_TYPE_CODEWSCOPE : { uint32_t l ; uint32_t doclen ; if ( ( len < 19 ) || ( o >= ( len - 14 ) ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> d2 = o + 4 ; iter -> d3 = o + 8 ; memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( ( l < 14 ) || ( l >= ( len - o ) ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> next_off = o + l ; if ( iter -> next_off >= len ) { iter -> err_off = o ; goto mark_invalid ; } memcpy ( & l , iter -> raw + iter -> d2 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( l == 0 || l >= ( len - o - 4 - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } if ( ( o + 4 + 4 + l + 4 ) >= iter -> next_off ) { iter -> err_off = o + 4 ; goto mark_invalid ; } iter -> d4 = o + 4 + 4 + l ; memcpy ( & doclen , iter -> raw + iter -> d4 , sizeof ( doclen ) ) ; doclen = BSON_UINT32_FROM_LE ( doclen ) ; if ( ( o + 4 + 4 + l + doclen ) != iter -> next_off ) { iter -> err_off = o + 4 + 4 + l ; goto mark_invalid ; } } break ; case BSON_TYPE_INT32 : iter -> next_off = o + 4 ; break ; case BSON_TYPE_DECIMAL128 : iter -> next_off = o + 16 ; break ; case BSON_TYPE_MAXKEY : case BSON_TYPE_MINKEY : case BSON_TYPE_NULL : case BSON_TYPE_UNDEFINED : iter -> next_off = o ; break ; default : * unsupported = true ; case BSON_TYPE_EOD : iter -> err_off = o ; goto mark_invalid ; } if ( iter -> next_off >= len ) { iter -> err_off = o ; goto mark_invalid ; } iter -> err_off = 0 ; return true ; mark_invalid : iter -> raw = NULL ; iter -> len = 0 ; iter -> next_off = 0 ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len - o - 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8740\n\n```\nCWE-20 static int on_header_cb ( nghttp2_session * ngh2 , const nghttp2_frame * frame , const uint8_t * name , size_t namelen , const uint8_t * value , size_t valuelen , uint8_t flags , void * userp ) { h2_session * session = ( h2_session * ) userp ; h2_stream * stream ; apr_status_t status ; ( void ) flags ; stream = get_stream ( session , frame -> hd . stream_id ) ; if ( ! stream ) { <S2SV_StartBug> ap_log_cerror ( APLOG_MARK , APLOG_ERR , 0 , session -> c , <S2SV_EndBug> APLOGNO ( 02920 ) \"h2_session:<S2SV_blank><S2SV_blank>stream(%ld-%d):<S2SV_blank>on_header<S2SV_blank>unknown<S2SV_blank>stream\" , session -> id , ( int ) frame -> hd . stream_id ) ; return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE ; } status = h2_stream_add_header ( stream , ( const char * ) name , namelen , ( const char * ) value , valuelen ) ; <S2SV_StartBug> if ( status != APR_SUCCESS && ! h2_stream_is_ready ( stream ) ) { <S2SV_EndBug> return NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( APLOG_MARK , APLOG_DEBUG <S2SV_ModEnd> , 0 , <S2SV_ModStart> valuelen ) ; if ( status == APR_ECONNRESET ) { ap_log_cerror ( APLOG_MARK , APLOG_TRACE1 , status , session -> c , \"h2-stream(%ld-%d):<S2SV_blank>on_header,<S2SV_blank>reset<S2SV_blank>stream\" , session -> id , stream -> id ) ; nghttp2_submit_rst_stream ( ngh2 , NGHTTP2_FLAG_NONE , stream -> id , NGHTTP2_INTERNAL_ERROR ) ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext4_xattr_block_get ( struct inode * inode , int name_index , const char * name , void * buffer , size_t buffer_size ) { struct buffer_head * bh = NULL ; struct ext4_xattr_entry * entry ; size_t size ; int error ; <S2SV_StartBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; <S2SV_EndBug> ea_idebug ( inode , \"name=%d.%s,<S2SV_blank>buffer=%p,<S2SV_blank>buffer_size=%ld\" , name_index , name , buffer , ( long ) buffer_size ) ; error = - ENODATA ; if ( ! EXT4_I ( inode ) -> i_file_acl ) goto cleanup ; ea_idebug ( inode , \"reading<S2SV_blank>block<S2SV_blank>%llu\" , ( unsigned long long ) EXT4_I ( inode ) -> i_file_acl ) ; bh = sb_bread ( inode -> i_sb , EXT4_I ( inode ) -> i_file_acl ) ; if ( ! bh ) goto cleanup ; ea_bdebug ( bh , \"b_count=%d,<S2SV_blank>refcount=%d\" , atomic_read ( & ( bh -> b_count ) ) , le32_to_cpu ( BHDR ( bh ) -> h_refcount ) ) ; if ( ext4_xattr_check_block ( inode , bh ) ) { bad_block : EXT4_ERROR_INODE ( inode , \"bad<S2SV_blank>block<S2SV_blank>%llu\" , EXT4_I ( inode ) -> i_file_acl ) ; error = - EFSCORRUPTED ; goto cleanup ; } ext4_xattr_cache_insert ( ext4_mb_cache , bh ) ; entry = BFIRST ( bh ) ; error = ext4_xattr_find_entry ( & entry , name_index , name , bh -> b_size , 1 ) ; if ( error == - EFSCORRUPTED ) goto bad_block ; if ( error ) goto cleanup ; size = le32_to_cpu ( entry -> e_value_size ) ; if ( buffer ) { error = - ERANGE ; if ( size > buffer_size ) goto cleanup ; memcpy ( buffer , bh -> b_data + le16_to_cpu ( entry -> e_value_offs ) , size ) ; } error = size ; cleanup : brelse ( bh ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error ; struct mb2_cache <S2SV_ModEnd> * ext4_mb_cache =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horDiff16 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { TIFFPredictorState * sp = PredictorState ( tif ) ; tmsize_t stride = sp -> stride ; uint16 * wp = ( uint16 * ) cp0 ; tmsize_t wc = cc / 2 ; <S2SV_StartBug> assert ( ( cc % ( 2 * stride ) ) == 0 ) ; <S2SV_EndBug> if ( wc > stride ) { wc -= stride ; wp += wc - 1 ; do { REPEAT4 ( stride , wp [ stride ] = ( uint16 ) ( ( ( unsigned int ) wp [ stride ] - ( unsigned int ) wp [ 0 ] ) & 0xffff ) ; wp -- ) wc -= stride ; } while ( wc > 0 ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horDiff16 ( TIFF <S2SV_ModStart> / 2 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horDiff8\" , \"%s\" , \"(cc%(2*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( wc <S2SV_ModStart> ) ; } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7254\n\n```\nCWE-125 int ParseCaffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { uint32_t chan_chunk = 0 , channel_layout = 0 , bcount ; unsigned char * channel_identities = NULL ; unsigned char * channel_reorder = NULL ; int64_t total_samples = 0 , infilesize ; CAFFileHeader caf_file_header ; CAFChunkHeader caf_chunk_header ; CAFAudioFormat caf_audio_format ; int i ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & caf_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & caf_file_header ) + 4 , sizeof ( CAFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( CAFFileHeader ) - 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_file_header , sizeof ( CAFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_file_header , CAFFileHeaderFormat ) ; if ( caf_file_header . mFileVersion != 1 ) { error_line ( \"%s:<S2SV_blank>can\\'t<S2SV_blank>handle<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>.CAF<S2SV_blank>files!\" , infilename , caf_file_header . mFileVersion ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & caf_chunk_header , sizeof ( CAFChunkHeader ) , & bcount ) || bcount != sizeof ( CAFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_chunk_header , sizeof ( CAFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_chunk_header , CAFChunkHeaderFormat ) ; if ( ! strncmp ( caf_chunk_header . mChunkType , \"desc\" , 4 ) ) { int supported = TRUE ; if ( caf_chunk_header . mChunkSize != sizeof ( CAFAudioFormat ) || ! DoReadFile ( infile , & caf_audio_format , ( uint32_t ) caf_chunk_header . mChunkSize , & bcount ) || bcount != caf_chunk_header . mChunkSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_audio_format , ( uint32_t ) caf_chunk_header . mChunkSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_audio_format , CAFAudioFormatFormat ) ; if ( debug_logging_mode ) { char formatstr [ 5 ] ; memcpy ( formatstr , caf_audio_format . mFormatID , 4 ) ; formatstr [ 4 ] = 0 ; error_line ( \"format<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>flags<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>sampling<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%g\" , formatstr , caf_audio_format . mFormatFlags , caf_audio_format . mSampleRate ) ; error_line ( \"packet<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>and<S2SV_blank>%d<S2SV_blank>frames\" , caf_audio_format . mBytesPerPacket , caf_audio_format . mFramesPerPacket ) ; error_line ( \"channels<S2SV_blank>per<S2SV_blank>frame<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>bits<S2SV_blank>per<S2SV_blank>channel<S2SV_blank>=<S2SV_blank>%d\" , caf_audio_format . mChannelsPerFrame , caf_audio_format . mBitsPerChannel ) ; } if ( strncmp ( caf_audio_format . mFormatID , \"lpcm\" , 4 ) || ( caf_audio_format . mFormatFlags & ~ 3 ) ) supported = FALSE ; else if ( caf_audio_format . mSampleRate < 1.0 || caf_audio_format . mSampleRate > 16777215.0 || caf_audio_format . mSampleRate != floor ( caf_audio_format . mSampleRate ) ) supported = FALSE ; else if ( ! caf_audio_format . mChannelsPerFrame || caf_audio_format . mChannelsPerFrame > 256 ) supported = FALSE ; else if ( caf_audio_format . mBitsPerChannel < 1 || caf_audio_format . mBitsPerChannel > 32 || ( ( caf_audio_format . mFormatFlags & CAF_FORMAT_FLOAT ) && caf_audio_format . mBitsPerChannel != 32 ) ) supported = FALSE ; else if ( caf_audio_format . mFramesPerPacket != 1 || caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame < ( caf_audio_format . mBitsPerChannel + 7 ) / 8 || caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame > 4 || caf_audio_format . mBytesPerPacket % caf_audio_format . mChannelsPerFrame ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.CAF<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } config -> bytes_per_sample = caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame ; config -> float_norm_exp = ( caf_audio_format . mFormatFlags & CAF_FORMAT_FLOAT ) ? 127 : 0 ; config -> bits_per_sample = caf_audio_format . mBitsPerChannel ; config -> num_channels = caf_audio_format . mChannelsPerFrame ; config -> sample_rate = ( int ) caf_audio_format . mSampleRate ; if ( ! ( caf_audio_format . mFormatFlags & CAF_FORMAT_LITTLE_ENDIAN ) && config -> bytes_per_sample > 1 ) config -> qmode |= QMODE_BIG_ENDIAN ; if ( config -> bytes_per_sample == 1 ) config -> qmode |= QMODE_SIGNED_BYTES ; if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>%s-endian<S2SV_blank>floating<S2SV_blank>point\" , ( config -> qmode & QMODE_BIG_ENDIAN ) ? \"big\" : \"little\" ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>%s-endian<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , ( config -> qmode & QMODE_BIG_ENDIAN ) ? \"big\" : \"little\" , config -> bytes_per_sample ) ; } } else if ( ! strncmp ( caf_chunk_header . mChunkType , \"chan\" , 4 ) ) { <S2SV_StartBug> CAFChannelLayout * caf_channel_layout = malloc ( ( size_t ) caf_chunk_header . mChunkSize ) ; <S2SV_EndBug> if ( caf_chunk_header . mChunkSize < sizeof ( CAFChannelLayout ) || <S2SV_StartBug> ! DoReadFile ( infile , caf_channel_layout , ( uint32_t ) caf_chunk_header . mChunkSize , & bcount ) || <S2SV_EndBug> bcount != caf_chunk_header . mChunkSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , caf_channel_layout , ( uint32_t ) caf_chunk_header . mChunkSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( caf_channel_layout , CAFChannelLayoutFormat ) ; chan_chunk = 1 ; if ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { error_line ( \"this<S2SV_blank>CAF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } switch ( caf_channel_layout -> mChannelLayoutTag ) { case kCAFChannelLayoutTag_UseChannelDescriptions : { CAFChannelDescription * descriptions = ( CAFChannelDescription * ) ( caf_channel_layout + 1 ) ; int num_descriptions = caf_channel_layout -> mNumberChannelDescriptions ; int label , cindex = 0 , idents = 0 ; if ( caf_chunk_header . mChunkSize != sizeof ( CAFChannelLayout ) + sizeof ( CAFChannelDescription ) * num_descriptions || num_descriptions != config -> num_channels ) { error_line ( \"channel<S2SV_blank>descriptions<S2SV_blank>in<S2SV_blank>\\'chan\\'<S2SV_blank>chunk<S2SV_blank>are<S2SV_blank>the<S2SV_blank>wrong<S2SV_blank>size!\" ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } if ( num_descriptions >= 256 ) { error_line ( \"%d<S2SV_blank>channel<S2SV_blank>descriptions<S2SV_blank>is<S2SV_blank>more<S2SV_blank>than<S2SV_blank>we<S2SV_blank>can<S2SV_blank>handle...ignoring!\" ) ; break ; } channel_reorder = malloc ( num_descriptions ) ; memset ( channel_reorder , - 1 , num_descriptions ) ; channel_identities = malloc ( num_descriptions + 1 ) ; for ( i = 0 ; i < num_descriptions ; ++ i ) { WavpackBigEndianToNative ( descriptions + i , CAFChannelDescriptionFormat ) ; if ( debug_logging_mode ) error_line ( \"chan<S2SV_blank>%d<S2SV_blank>--><S2SV_blank>%d\" , i + 1 , descriptions [ i ] . mChannelLabel ) ; } for ( label = 1 ; label <= 18 ; ++ label ) for ( i = 0 ; i < num_descriptions ; ++ i ) if ( descriptions [ i ] . mChannelLabel == label ) { config -> channel_mask |= 1 << ( label - 1 ) ; channel_reorder [ i ] = cindex ++ ; break ; } for ( i = 0 ; i < num_descriptions ; ++ i ) if ( channel_reorder [ i ] == ( unsigned char ) - 1 ) { uint32_t clabel = descriptions [ i ] . mChannelLabel ; if ( clabel == 0 || clabel == 0xffffffff || clabel == 100 ) channel_identities [ idents ++ ] = 0xff ; else if ( ( clabel >= 33 && clabel <= 44 ) || ( clabel >= 200 && clabel <= 207 ) || ( clabel >= 301 && clabel <= 305 ) ) channel_identities [ idents ++ ] = clabel >= 301 ? clabel - 80 : clabel ; else { error_line ( \"warning:<S2SV_blank>unknown<S2SV_blank>channel<S2SV_blank>descriptions<S2SV_blank>label:<S2SV_blank>%d\" , clabel ) ; channel_identities [ idents ++ ] = 0xff ; } channel_reorder [ i ] = cindex ++ ; } for ( i = 0 ; i < num_descriptions ; ++ i ) if ( channel_reorder [ i ] != i ) break ; if ( i == num_descriptions ) { free ( channel_reorder ) ; channel_reorder = NULL ; } else { config -> qmode |= QMODE_REORDERED_CHANS ; channel_layout = num_descriptions ; } if ( ! idents ) { free ( channel_identities ) ; channel_identities = NULL ; } else channel_identities [ idents ] = 0 ; if ( debug_logging_mode ) { error_line ( \"layout_tag<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>so<S2SV_blank>generated<S2SV_blank>bitmap<S2SV_blank>of<S2SV_blank>0x%08x<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>descriptions,<S2SV_blank>%d<S2SV_blank>non-MS\" , caf_channel_layout -> mChannelLayoutTag , config -> channel_mask , caf_channel_layout -> mNumberChannelDescriptions , idents ) ; if ( channel_reorder && num_descriptions <= 8 ) { char reorder_string [ ] = \"12345678\" ; for ( i = 0 ; i < num_descriptions ; ++ i ) reorder_string [ i ] = channel_reorder [ i ] + '1' ; reorder_string [ i ] = 0 ; error_line ( \"reordering<S2SV_blank>string<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , reorder_string ) ; } } } break ; case kCAFChannelLayoutTag_UseChannelBitmap : config -> channel_mask = caf_channel_layout -> mChannelBitmap ; if ( debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>so<S2SV_blank>using<S2SV_blank>supplied<S2SV_blank>bitmap<S2SV_blank>of<S2SV_blank>0x%08x\" , caf_channel_layout -> mChannelLayoutTag , caf_channel_layout -> mChannelBitmap ) ; break ; default : for ( i = 0 ; i < NUM_LAYOUTS ; ++ i ) if ( caf_channel_layout -> mChannelLayoutTag == layouts [ i ] . mChannelLayoutTag ) { config -> channel_mask = layouts [ i ] . mChannelBitmap ; channel_layout = layouts [ i ] . mChannelLayoutTag ; if ( layouts [ i ] . mChannelReorder ) { channel_reorder = ( unsigned char * ) strdup ( layouts [ i ] . mChannelReorder ) ; config -> qmode |= QMODE_REORDERED_CHANS ; } if ( layouts [ i ] . mChannelIdentities ) channel_identities = ( unsigned char * ) strdup ( layouts [ i ] . mChannelIdentities ) ; if ( debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>0x%08x<S2SV_blank>found<S2SV_blank>in<S2SV_blank>table,<S2SV_blank>bitmap<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>reorder<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>identities<S2SV_blank>=<S2SV_blank>%s\" , channel_layout , config -> channel_mask , channel_reorder ? \"yes\" : \"no\" , channel_identities ? \"yes\" : \"no\" ) ; break ; } if ( i == NUM_LAYOUTS && debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>0x%08x<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>table...all<S2SV_blank>channels<S2SV_blank>unassigned\" , caf_channel_layout -> mChannelLayoutTag ) ; break ; } free ( caf_channel_layout ) ; } else if ( ! strncmp ( caf_chunk_header . mChunkType , \"data\" , 4 ) ) { uint32_t mEditCount ; if ( ! DoReadFile ( infile , & mEditCount , sizeof ( mEditCount ) , & bcount ) || bcount != sizeof ( mEditCount ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & mEditCount , sizeof ( mEditCount ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } if ( ( config -> qmode & QMODE_IGNORE_LENGTH ) || caf_chunk_header . mChunkSize == - 1 ) { config -> qmode |= QMODE_IGNORE_LENGTH ; if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / caf_audio_format . mBytesPerPacket ; else total_samples = - 1 ; } else { if ( infilesize && infilesize - caf_chunk_header . mChunkSize > 16777216 ) { error_line ( \".CAF<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>CAFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ( caf_chunk_header . mChunkSize - 4 ) % caf_audio_format . mBytesPerPacket ) { error_line ( \".CAF<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>data<S2SV_blank>chunk<S2SV_blank>size,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } total_samples = ( caf_chunk_header . mChunkSize - 4 ) / caf_audio_format . mBytesPerPacket ; if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.CAF<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } break ; } else { <S2SV_StartBug> int bytes_to_copy = ( uint32_t ) caf_chunk_header . mChunkSize ; <S2SV_EndBug> <S2SV_StartBug> char * buff = malloc ( bytes_to_copy ) ; <S2SV_EndBug> if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , caf_chunk_header . mChunkType [ 0 ] , caf_chunk_header . mChunkType [ 1 ] , caf_chunk_header . mChunkType [ 2 ] , caf_chunk_header . mChunkType [ 3 ] , caf_chunk_header . mChunkSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! chan_chunk && ! config -> channel_mask && config -> num_channels <= 2 && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) config -> channel_mask = 0x5 - config -> num_channels ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , channel_identities ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } if ( channel_identities ) free ( channel_identities ) ; if ( channel_layout || channel_reorder ) { if ( ! WavpackSetChannelLayout ( wpc , channel_layout , channel_reorder ) ) { error_line ( \"problem<S2SV_blank>with<S2SV_blank>setting<S2SV_blank>channel<S2SV_blank>layout<S2SV_blank>(should<S2SV_blank>not<S2SV_blank>happen)\" ) ; return WAVPACK_SOFT_ERROR ; } if ( channel_reorder ) free ( channel_reorder ) ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CAFChannelLayout * caf_channel_layout <S2SV_ModEnd> ; if ( <S2SV_ModStart> CAFChannelLayout ) || caf_chunk_header . mChunkSize > 1024 ) { error_line ( \"this<S2SV_blank>.CAF<S2SV_blank>file<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>\\'chan\\'<S2SV_blank>chunk!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"\\'chan\\'<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes\" , ( int ) caf_chunk_header . mChunkSize ) ; caf_channel_layout = malloc ( ( size_t ) caf_chunk_header . mChunkSize ) ; if ( <S2SV_ModStart> } else { uint32_t <S2SV_ModEnd> bytes_to_copy = ( <S2SV_ModStart> ; char * buff ; if ( caf_chunk_header . mChunkSize < 0 || caf_chunk_header . mChunkSize > 1048576 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-119 SEL * selReadStream ( FILE * fp ) { char * selname ; <S2SV_StartBug> char linebuf [ L_BUF_SIZE ] ; <S2SV_EndBug> l_int32 sy , sx , cy , cx , i , j , version , ignore ; SEL * sel ; PROCNAME ( \"selReadStream\" ) ; if ( ! fp ) return ( SEL * ) ERROR_PTR ( \"stream<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( fscanf ( fp , \"<S2SV_blank><S2SV_blank>Sel<S2SV_blank>Version<S2SV_blank>%d\\\\n\" , & version ) != 1 ) return ( SEL * ) ERROR_PTR ( \"not<S2SV_blank>a<S2SV_blank>sel<S2SV_blank>file\" , procName , NULL ) ; if ( version != SEL_VERSION_NUMBER ) return ( SEL * ) ERROR_PTR ( \"invalid<S2SV_blank>sel<S2SV_blank>version\" , procName , NULL ) ; <S2SV_StartBug> if ( fgets ( linebuf , L_BUF_SIZE , fp ) == NULL ) <S2SV_EndBug> return ( SEL * ) ERROR_PTR ( \"error<S2SV_blank>reading<S2SV_blank>into<S2SV_blank>linebuf\" , procName , NULL ) ; selname = stringNew ( linebuf ) ; <S2SV_StartBug> sscanf ( linebuf , \"<S2SV_blank><S2SV_blank>------<S2SV_blank><S2SV_blank>%s<S2SV_blank><S2SV_blank>------\" , selname ) ; <S2SV_EndBug> if ( fscanf ( fp , \"<S2SV_blank><S2SV_blank>sy<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>sx<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>cy<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>cx<S2SV_blank>=<S2SV_blank>%d\\\\n\" , & sy , & sx , & cy , & cx ) != 4 ) { LEPT_FREE ( selname ) ; return ( SEL * ) ERROR_PTR ( \"dimensions<S2SV_blank>not<S2SV_blank>read\" , procName , NULL ) ; } if ( ( sel = selCreate ( sy , sx , selname ) ) == NULL ) { LEPT_FREE ( selname ) ; return ( SEL * ) ERROR_PTR ( \"sel<S2SV_blank>not<S2SV_blank>made\" , procName , NULL ) ; } selSetOrigin ( sel , cy , cx ) ; for ( i = 0 ; i < sy ; i ++ ) { ignore = fscanf ( fp , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; for ( j = 0 ; j < sx ; j ++ ) ignore = fscanf ( fp , \"%1d\" , & sel -> data [ i ] [ j ] ) ; ignore = fscanf ( fp , \"\\\\n\" ) ; } ignore = fscanf ( fp , \"\\\\n\" ) ; LEPT_FREE ( selname ) ; return sel ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char linebuf [ L_BUFSIZE <S2SV_ModEnd> ] ; l_int32 <S2SV_ModStart> ( linebuf , L_BUFSIZE <S2SV_ModEnd> , fp ) <S2SV_ModStart> ( linebuf , \"<S2SV_blank><S2SV_blank>------<S2SV_blank><S2SV_blank>%200s<S2SV_blank><S2SV_blank>------\" <S2SV_ModEnd> , selname )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5548\n\n```\nCWE-119 static int atusb_get_and_show_build ( struct atusb * atusb ) { struct usb_device * usb_dev = atusb -> usb_dev ; <S2SV_StartBug> char build [ ATUSB_BUILD_SIZE + 1 ] ; <S2SV_EndBug> <S2SV_StartBug> int ret ; <S2SV_EndBug> ret = atusb_control_msg ( atusb , usb_rcvctrlpipe ( usb_dev , 0 ) , ATUSB_BUILD , ATUSB_REQ_FROM_DEV , 0 , 0 , build , ATUSB_BUILD_SIZE , 1000 ) ; if ( ret >= 0 ) { build [ ret ] = 0 ; dev_info ( & usb_dev -> dev , \"Firmware:<S2SV_blank>build<S2SV_blank>%s\\\\n\" , build ) ; } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> usb_dev ; char * build <S2SV_ModEnd> ; int ret <S2SV_ModStart> ; int ret ; build = kmalloc ( ATUSB_BUILD_SIZE + 1 , GFP_KERNEL ) ; if ( ! build ) return - ENOMEM <S2SV_ModStart> ) ; } kfree ( build ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3905\n\n```\nCWE-119 static int translate_hex_string ( char * s , char * saved_orphan ) { int c1 = * saved_orphan ; char * start = s ; char * t = s ; for ( ; * s ; s ++ ) { <S2SV_StartBug> if ( isspace ( * s ) ) <S2SV_EndBug> continue ; if ( c1 ) { * t ++ = ( hexval ( c1 ) << 4 ) + hexval ( * s ) ; c1 = 0 ; } else c1 = * s ; } * saved_orphan = c1 ; return t - start ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( isspace ( ( unsigned char )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-0011\n\n```\nCWE-264 void test_js ( void ) { GString * result = g_string_new ( \"\" ) ; parse_cmd_line ( \"js<S2SV_blank>(\\'x\\'<S2SV_blank>+<S2SV_blank>345).toUpperCase()\" , result ) ; g_assert_cmpstr ( \"X345\" , == , result -> str ) ; <S2SV_StartBug> uzbl . net . useragent = \"Test<S2SV_blank>useragent\" ; <S2SV_EndBug> parse_cmd_line ( \"js<S2SV_blank>Uzbl.run(\\'print<S2SV_blank>@useragent\\').toUpperCase();\" , result ) ; g_assert_cmpstr ( \"TEST<S2SV_blank>USERAGENT\" , == , result -> str ) ; g_string_free ( result , TRUE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> str ) ; <S2SV_ModEnd> g_string_free ( result\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000211\n\n```\nCWE-416 void HTML_put_string ( HTStructured * me , const char * s ) <S2SV_StartBug> { <S2SV_EndBug> # ifdef USE_PRETTYSRC char * translated_string = NULL ; # endif if ( s == NULL || ( LYMapsOnly && me -> sp [ 0 ] . tag_number != HTML_OBJECT ) ) return ; # ifdef USE_PRETTYSRC if ( psrc_convert_string ) { StrAllocCopy ( translated_string , s ) ; TRANSLATE_AND_UNESCAPE_ENTITIES ( & translated_string , TRUE , FALSE ) ; s = ( const char * ) translated_string ; } # endif switch ( me -> sp [ 0 ] . tag_number ) { case HTML_COMMENT : break ; case HTML_TITLE : <S2SV_StartBug> HTChunkPuts ( & me -> title , s ) ; <S2SV_EndBug> break ; case HTML_STYLE : <S2SV_StartBug> HTChunkPuts ( & me -> style_block , s ) ; <S2SV_EndBug> break ; case HTML_SCRIPT : <S2SV_StartBug> HTChunkPuts ( & me -> script , s ) ; <S2SV_EndBug> break ; case HTML_PRE : case HTML_LISTING : case HTML_XMP : case HTML_PLAINTEXT : HText_appendText ( me -> text , s ) ; break ; case HTML_OBJECT : <S2SV_StartBug> HTChunkPuts ( & me -> object , s ) ; <S2SV_EndBug> break ; case HTML_TEXTAREA : <S2SV_StartBug> HTChunkPuts ( & me -> textarea , s ) ; <S2SV_EndBug> break ; case HTML_SELECT : case HTML_OPTION : <S2SV_StartBug> HTChunkPuts ( & me -> option , s ) ; <S2SV_EndBug> break ; case HTML_MATH : <S2SV_StartBug> HTChunkPuts ( & me -> math , s ) ; <S2SV_EndBug> break ; default : if ( ! me -> sp -> style -> freeFormat ) { # ifdef USE_PRETTYSRC if ( psrc_view ) { for ( ; * s ; ++ s ) HTML_put_character ( me , * s ) ; } else # endif HText_appendText ( me -> text , s ) ; break ; } else { const char * p = s ; char c ; if ( me -> style_change ) { for ( ; * p && ( ( * p == '\\\\n' ) || ( * p == '\\\\r' ) || ( * p == '<S2SV_blank>' ) || ( * p == '\\\\t' ) ) ; p ++ ) ; if ( ! * p ) break ; UPDATE_STYLE ; } for ( ; * p ; p ++ ) { if ( * p == 13 && p [ 1 ] != 10 ) { c = '\\\\n' ; } else { c = * p ; } if ( me -> style_change ) { if ( ( c == '\\\\n' ) || ( c == '<S2SV_blank>' ) || ( c == '\\\\t' ) ) continue ; UPDATE_STYLE ; } if ( c == '\\\\n' ) { if ( ! FIX_JAPANESE_SPACES ) { if ( me -> in_word ) { if ( HText_getLastChar ( me -> text ) != '<S2SV_blank>' ) HText_appendCharacter ( me -> text , '<S2SV_blank>' ) ; me -> in_word = NO ; } } } else if ( c == '<S2SV_blank>' || c == '\\\\t' ) { if ( HText_getLastChar ( me -> text ) != '<S2SV_blank>' ) HText_appendCharacter ( me -> text , '<S2SV_blank>' ) ; } else if ( c == '\\\\r' ) { } else { HText_appendCharacter ( me -> text , c ) ; me -> in_word = YES ; } if ( c == '\\\\n' || c == '\\\\t' ) { HText_setLastChar ( me -> text , '<S2SV_blank>' ) ; } else if ( c == '\\\\r' && HText_getLastChar ( me -> text ) == '<S2SV_blank>' ) { HText_setLastChar ( me -> text , '<S2SV_blank>' ) ; } else { HText_setLastChar ( me -> text , c ) ; } } } } <S2SV_StartBug> # ifdef USE_PRETTYSRC <S2SV_EndBug> if ( psrc_convert_string ) { psrc_convert_string = FALSE ; FREE ( translated_string ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { HTChunk * target = NULL ; <S2SV_ModStart> case HTML_TITLE : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> title <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_STYLE : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> style_block <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_SCRIPT : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> script <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_OBJECT : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> object <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_TEXTAREA : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> textarea <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_OPTION : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> option <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_MATH : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> math <S2SV_ModEnd> ; break ; <S2SV_ModStart> } } } if ( target != NULL ) { if ( target -> data == s ) { CTRACE ( ( tfp , \"BUG:<S2SV_blank>appending<S2SV_blank>chunk<S2SV_blank>to<S2SV_blank>itself:<S2SV_blank>`%.*s\\'\\\\n\" , target -> size , target -> data ) ) ; } else { HTChunkPuts ( target , s ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_update_entropy ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { int update = va_arg ( args , int ) ; vp8_update_entropy ( ctx -> cpi , update ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9936\n\n```\nCWE-416 PHP_FUNCTION ( unserialize ) { char * buf = NULL ; size_t buf_len ; const unsigned char * p ; php_unserialize_data_t var_hash ; <S2SV_StartBug> zval * options = NULL , * classes = NULL ; <S2SV_EndBug> HashTable * class_hash = NULL ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) , \"s|a\" , & buf , & buf_len , & options ) == FAILURE ) { RETURN_FALSE ; } if ( buf_len == 0 ) { RETURN_FALSE ; } p = ( const unsigned char * ) buf ; PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; if ( options != NULL ) { classes = zend_hash_str_find ( Z_ARRVAL_P ( options ) , \"allowed_classes\" , sizeof ( \"allowed_classes\" ) - 1 ) ; if ( classes && ( Z_TYPE_P ( classes ) == IS_ARRAY || ! zend_is_true ( classes ) ) ) { ALLOC_HASHTABLE ( class_hash ) ; zend_hash_init ( class_hash , ( Z_TYPE_P ( classes ) == IS_ARRAY ) ? zend_hash_num_elements ( Z_ARRVAL_P ( classes ) ) : 0 , NULL , NULL , 0 ) ; } if ( class_hash && Z_TYPE_P ( classes ) == IS_ARRAY ) { zval * entry ; zend_string * lcname ; ZEND_HASH_FOREACH_VAL ( Z_ARRVAL_P ( classes ) , entry ) { convert_to_string_ex ( entry ) ; lcname = zend_string_tolower ( Z_STR_P ( entry ) ) ; zend_hash_add_empty_element ( class_hash , lcname ) ; zend_string_release ( lcname ) ; } ZEND_HASH_FOREACH_END ( ) ; } } <S2SV_StartBug> if ( ! php_var_unserialize_ex ( return_value , & p , p + buf_len , & var_hash , class_hash ) ) { <S2SV_EndBug> PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; if ( class_hash ) { zend_hash_destroy ( class_hash ) ; FREE_HASHTABLE ( class_hash ) ; } <S2SV_StartBug> zval_ptr_dtor ( return_value ) ; <S2SV_EndBug> if ( ! EG ( exception ) ) { php_error_docref ( NULL , E_NOTICE , \"Error<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>\" ZEND_LONG_FMT \"<S2SV_blank>of<S2SV_blank>%zd<S2SV_blank>bytes\" , ( zend_long ) ( ( char * ) p - buf ) , buf_len ) ; } RETURN_FALSE ; } <S2SV_StartBug> var_push_dtor ( & var_hash , return_value ) ; <S2SV_EndBug> PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; if ( class_hash ) { zend_hash_destroy ( class_hash ) ; FREE_HASHTABLE ( class_hash ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> classes = NULL ; zval * retval <S2SV_ModStart> ; } } retval = var_tmp_var ( & var_hash ) ; <S2SV_ModStart> ! php_var_unserialize_ex ( retval <S2SV_ModEnd> , & p <S2SV_ModStart> ) ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> RETURN_FALSE ; } ZVAL_COPY ( return_value , retval <S2SV_ModEnd> ) ; PHP_VAR_UNSERIALIZE_DESTROY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13225\n\n```\nCWE-476 static int compile_bag_node ( BagNode * node , regex_t * reg , ScanEnv * env ) { int r , len ; switch ( node -> type ) { case BAG_MEMORY : r = compile_bag_memory_node ( node , reg , env ) ; break ; case BAG_OPTION : r = compile_option_node ( node , reg , env ) ; break ; case BAG_STOP_BACKTRACK : if ( NODE_IS_STOP_BT_SIMPLE_REPEAT ( node ) ) { QuantNode * qn = QUANT_ ( NODE_BAG_BODY ( node ) ) ; r = compile_tree_n_times ( NODE_QUANT_BODY ( qn ) , qn -> lower , reg , env ) ; if ( r != 0 ) return r ; len = compile_length_tree ( NODE_QUANT_BODY ( qn ) , reg ) ; if ( len < 0 ) return len ; r = add_op ( reg , OP_PUSH ) ; if ( r != 0 ) return r ; COP ( reg ) -> push . addr = SIZE_INC_OP + len + SIZE_OP_POP_OUT + SIZE_OP_JUMP ; r = compile_tree ( NODE_QUANT_BODY ( qn ) , reg , env ) ; if ( r != 0 ) return r ; r = add_op ( reg , OP_POP_OUT ) ; if ( r != 0 ) return r ; r = add_op ( reg , OP_JUMP ) ; if ( r != 0 ) return r ; COP ( reg ) -> jump . addr = - ( ( int ) SIZE_OP_PUSH + len + ( int ) SIZE_OP_POP_OUT ) ; } else { r = add_op ( reg , OP_ATOMIC_START ) ; if ( r != 0 ) return r ; r = compile_tree ( NODE_BAG_BODY ( node ) , reg , env ) ; if ( r != 0 ) return r ; r = add_op ( reg , OP_ATOMIC_END ) ; } break ; case BAG_IF_ELSE : { <S2SV_StartBug> int cond_len , then_len , jump_len ; <S2SV_EndBug> Node * cond = NODE_BAG_BODY ( node ) ; Node * Then = node -> te . Then ; Node * Else = node -> te . Else ; r = add_op ( reg , OP_ATOMIC_START ) ; if ( r != 0 ) return r ; cond_len = compile_length_tree ( cond , reg ) ; if ( cond_len < 0 ) return cond_len ; if ( IS_NOT_NULL ( Then ) ) { then_len = compile_length_tree ( Then , reg ) ; if ( then_len < 0 ) return then_len ; } else then_len = 0 ; <S2SV_StartBug> jump_len = cond_len + then_len + SIZE_OP_ATOMIC_END ; <S2SV_EndBug> if ( IS_NOT_NULL ( Else ) ) jump_len += SIZE_OP_JUMP ; r = add_op ( reg , OP_PUSH ) ; if ( r != 0 ) return r ; COP ( reg ) -> push . addr = SIZE_INC_OP + jump_len ; r = compile_tree ( cond , reg , env ) ; if ( r != 0 ) return r ; r = add_op ( reg , OP_ATOMIC_END ) ; if ( r != 0 ) return r ; if ( IS_NOT_NULL ( Then ) ) { r = compile_tree ( Then , reg , env ) ; if ( r != 0 ) return r ; } if ( IS_NOT_NULL ( Else ) ) { <S2SV_StartBug> int else_len = compile_length_tree ( Else , reg ) ; <S2SV_EndBug> r = add_op ( reg , OP_JUMP ) ; if ( r != 0 ) return r ; <S2SV_StartBug> COP ( reg ) -> jump . addr = else_len + SIZE_INC_OP ; <S2SV_EndBug> <S2SV_StartBug> r = compile_tree ( Else , reg , env ) ; <S2SV_EndBug> } } break ; } return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , then_len , else_len , <S2SV_ModStart> then_len + SIZE_OP_ATOMIC_END + <S2SV_ModEnd> SIZE_OP_JUMP ; r <S2SV_ModStart> ) ) { <S2SV_ModEnd> else_len = compile_length_tree <S2SV_ModStart> , reg ) ; if ( else_len < 0 ) return else_len ; } else else_len = 0 <S2SV_ModStart> . addr = SIZE_OP_ATOMIC_END + <S2SV_ModStart> ; r = add_op ( reg , OP_ATOMIC_END ) ; if ( r != 0 ) return r ; if ( IS_NOT_NULL ( Else ) ) { r =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4913\n\n```\nCWE-20 static int rose_parse_national ( unsigned char * p , struct rose_facilities_struct * facilities , int len ) { unsigned char * pt ; unsigned char l , lg , n = 0 ; int fac_national_digis_received = 0 ; do { switch ( * p & 0xC0 ) { case 0x00 : p += 2 ; n += 2 ; len -= 2 ; break ; case 0x40 : if ( * p == FAC_NATIONAL_RAND ) facilities -> rand = ( ( p [ 1 ] << 8 ) & 0xFF00 ) + ( ( p [ 2 ] << 0 ) & 0x00FF ) ; p += 3 ; n += 3 ; len -= 3 ; break ; case 0x80 : p += 4 ; n += 4 ; len -= 4 ; break ; case 0xC0 : l = p [ 1 ] ; if ( * p == FAC_NATIONAL_DEST_DIGI ) { if ( ! fac_national_digis_received ) { memcpy ( & facilities -> source_digis [ 0 ] , p + 2 , AX25_ADDR_LEN ) ; facilities -> source_ndigis = 1 ; } } else if ( * p == FAC_NATIONAL_SRC_DIGI ) { if ( ! fac_national_digis_received ) { memcpy ( & facilities -> dest_digis [ 0 ] , p + 2 , AX25_ADDR_LEN ) ; facilities -> dest_ndigis = 1 ; } } else if ( * p == FAC_NATIONAL_FAIL_CALL ) { memcpy ( & facilities -> fail_call , p + 2 , AX25_ADDR_LEN ) ; } else if ( * p == FAC_NATIONAL_FAIL_ADD ) { memcpy ( & facilities -> fail_addr , p + 3 , ROSE_ADDR_LEN ) ; } else if ( * p == FAC_NATIONAL_DIGIS ) { fac_national_digis_received = 1 ; facilities -> source_ndigis = 0 ; facilities -> dest_ndigis = 0 ; for ( pt = p + 2 , lg = 0 ; lg < l ; pt += AX25_ADDR_LEN , lg += AX25_ADDR_LEN ) { <S2SV_StartBug> if ( pt [ 6 ] & AX25_HBIT ) <S2SV_EndBug> memcpy ( & facilities -> dest_digis [ facilities -> dest_ndigis ++ ] , pt , AX25_ADDR_LEN ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> memcpy ( & facilities -> source_digis [ facilities -> source_ndigis ++ ] , pt , AX25_ADDR_LEN ) ; <S2SV_EndBug> } } p += l + 2 ; n += l + 2 ; len -= l + 2 ; break ; } } while ( * p != 0x00 && len > 0 ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & AX25_HBIT ) { if ( facilities -> dest_ndigis >= ROSE_MAX_DIGIS ) return - 1 ; <S2SV_ModStart> AX25_ADDR_LEN ) ; } else { if ( facilities -> source_ndigis >= ROSE_MAX_DIGIS ) return - 1 ; <S2SV_ModEnd> memcpy ( & <S2SV_ModStart> AX25_ADDR_LEN ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static int32_t scsi_send_command ( SCSIRequest * req , uint8_t * buf ) { SCSIDiskReq * r = DO_UPCAST ( SCSIDiskReq , req , req ) ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , req -> dev ) ; int32_t len ; uint8_t command ; <S2SV_StartBug> uint8_t * outbuf ; <S2SV_EndBug> int rc ; <S2SV_StartBug> command = buf [ 0 ] ; <S2SV_EndBug> outbuf = ( uint8_t * ) r -> iov . iov_base ; DPRINTF ( \"Command:<S2SV_blank>lun=%d<S2SV_blank>tag=0x%x<S2SV_blank>data=0x%02x\" , req -> lun , req -> tag , buf [ 0 ] ) ; # ifdef DEBUG_SCSI { int i ; for ( i = 1 ; i < r -> req . cmd . len ; i ++ ) { printf ( \"<S2SV_blank>0x%02x\" , buf [ i ] ) ; } printf ( \"\\\\n\" ) ; } # endif switch ( command ) { case TEST_UNIT_READY : case INQUIRY : case MODE_SENSE : case MODE_SENSE_10 : case RESERVE : case RESERVE_10 : case RELEASE : case RELEASE_10 : case START_STOP : case ALLOW_MEDIUM_REMOVAL : case READ_CAPACITY_10 : case READ_TOC : case GET_CONFIGURATION : case SERVICE_ACTION_IN_16 : case VERIFY_10 : <S2SV_StartBug> rc = scsi_disk_emulate_command ( r , outbuf ) ; <S2SV_EndBug> if ( rc < 0 ) { return 0 ; } r -> iov . iov_len = rc ; break ; case SYNCHRONIZE_CACHE : bdrv_acct_start ( s -> bs , & r -> acct , 0 , BDRV_ACCT_FLUSH ) ; r -> req . aiocb = bdrv_aio_flush ( s -> bs , scsi_flush_complete , r ) ; if ( r -> req . aiocb == NULL ) { scsi_flush_complete ( r , - EIO ) ; } return 0 ; case READ_6 : case READ_10 : case READ_12 : case READ_16 : len = r -> req . cmd . xfer / s -> qdev . blocksize ; DPRINTF ( \"Read<S2SV_blank>(sector<S2SV_blank>%\" PRId64 \",<S2SV_blank>count<S2SV_blank>%d)\\\\n\" , r -> req . cmd . lba , len ) ; if ( r -> req . cmd . lba > s -> max_lba ) goto illegal_lba ; r -> sector = r -> req . cmd . lba * s -> cluster_size ; r -> sector_count = len * s -> cluster_size ; break ; case WRITE_6 : case WRITE_10 : case WRITE_12 : case WRITE_16 : case WRITE_VERIFY_10 : case WRITE_VERIFY_12 : case WRITE_VERIFY_16 : len = r -> req . cmd . xfer / s -> qdev . blocksize ; DPRINTF ( \"Write<S2SV_blank>%s(sector<S2SV_blank>%\" PRId64 \",<S2SV_blank>count<S2SV_blank>%d)\\\\n\" , ( command & 0xe ) == 0xe ? \"And<S2SV_blank>Verify<S2SV_blank>\" : \"\" , r -> req . cmd . lba , len ) ; if ( r -> req . cmd . lba > s -> max_lba ) goto illegal_lba ; r -> sector = r -> req . cmd . lba * s -> cluster_size ; r -> sector_count = len * s -> cluster_size ; break ; case MODE_SELECT : DPRINTF ( \"Mode<S2SV_blank>Select(6)<S2SV_blank>(len<S2SV_blank>%lu)\\\\n\" , ( long ) r -> req . cmd . xfer ) ; if ( r -> req . cmd . xfer > 12 ) { goto fail ; } break ; case MODE_SELECT_10 : DPRINTF ( \"Mode<S2SV_blank>Select(10)<S2SV_blank>(len<S2SV_blank>%lu)\\\\n\" , ( long ) r -> req . cmd . xfer ) ; if ( r -> req . cmd . xfer > 16 ) { goto fail ; } break ; case SEEK_6 : case SEEK_10 : DPRINTF ( \"Seek(%d)<S2SV_blank>(sector<S2SV_blank>%\" PRId64 \")\\\\n\" , command == SEEK_6 ? 6 : 10 , r -> req . cmd . lba ) ; if ( r -> req . cmd . lba > s -> max_lba ) { goto illegal_lba ; } break ; case WRITE_SAME_16 : len = r -> req . cmd . xfer / s -> qdev . blocksize ; DPRINTF ( \"WRITE<S2SV_blank>SAME(16)<S2SV_blank>(sector<S2SV_blank>%\" PRId64 \",<S2SV_blank>count<S2SV_blank>%d)\\\\n\" , r -> req . cmd . lba , len ) ; if ( r -> req . cmd . lba > s -> max_lba ) { goto illegal_lba ; } if ( ! ( buf [ 1 ] & 0x8 ) ) { goto fail ; } rc = bdrv_discard ( s -> bs , r -> req . cmd . lba * s -> cluster_size , len * s -> cluster_size ) ; if ( rc < 0 ) { goto fail ; } break ; case REQUEST_SENSE : abort ( ) ; default : DPRINTF ( \"Unknown<S2SV_blank>SCSI<S2SV_blank>command<S2SV_blank>(%2.2x)\\\\n\" , buf [ 0 ] ) ; scsi_check_condition ( r , SENSE_CODE ( INVALID_OPCODE ) ) ; return 0 ; fail : scsi_check_condition ( r , SENSE_CODE ( INVALID_FIELD ) ) ; return 0 ; illegal_lba : scsi_check_condition ( r , SENSE_CODE ( LBA_OUT_OF_RANGE ) ) ; return 0 ; } if ( r -> sector_count == 0 && r -> iov . iov_len == 0 ) { scsi_req_complete ( & r -> req , GOOD ) ; } len = r -> sector_count * 512 + r -> iov . iov_len ; if ( r -> req . cmd . mode == SCSI_XFER_TO_DEV ) { return - len ; } else { if ( ! r -> sector_count ) r -> sector_count = - 1 ; return len ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8_t command ; <S2SV_ModEnd> int rc ; <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; DPRINTF ( <S2SV_ModStart> scsi_disk_emulate_command ( r <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2304\n\n```\nCWE-22 DEFINE_TEST ( test_write_disk_secure ) { # if defined ( _WIN32 ) && ! defined ( __CYGWIN__ ) skipping ( \"archive_write_disk<S2SV_blank>security<S2SV_blank>checks<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>on<S2SV_blank>Windows\" ) ; # else struct archive * a ; struct archive_entry * ae ; struct stat st ; assertUmask ( UMASK ) ; assert ( ( a = archive_write_disk_new ( ) ) != NULL ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"dir\" ) ; archive_entry_set_mode ( ae , S_IFDIR | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; archive_entry_free ( ae ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir/filea\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir/fileb\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; archive_write_disk_set_options ( a , ARCHIVE_EXTRACT_SECURE_SYMLINKS ) ; failure ( \"Extracting<S2SV_blank>a<S2SV_blank>file<S2SV_blank>through<S2SV_blank>a<S2SV_blank>symlink<S2SV_blank>should<S2SV_blank>fail<S2SV_blank>here.\" ) ; assertEqualInt ( ARCHIVE_FAILED , archive_write_header ( a , ae ) ) ; archive_entry_free ( ae ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir2\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir2/filec\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; archive_write_disk_set_options ( a , ARCHIVE_EXTRACT_SECURE_SYMLINKS | ARCHIVE_EXTRACT_UNLINK ) ; assertEqualIntA ( a , ARCHIVE_OK , archive_write_header ( a , ae ) ) ; archive_entry_free ( ae ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir3\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir3\" ) ; archive_entry_set_mode ( ae , S_IFDIR | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertEqualInt ( 0 , lstat ( \"link_to_dir3\" , & st ) ) ; assert ( S_ISLNK ( st . st_mode ) ) ; archive_entry_free ( ae ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir4\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"nonexistent_dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir4\" ) ; archive_entry_set_mode ( ae , S_IFDIR | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertEqualInt ( 0 , lstat ( \"link_to_dir4\" , & st ) ) ; assert ( S_ISDIR ( st . st_mode ) ) ; archive_entry_free ( ae ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"non_dir\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; archive_entry_copy_pathname ( ae , \"link_to_dir5\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"non_dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir5\" ) ; archive_entry_set_mode ( ae , S_IFDIR | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertEqualInt ( 0 , lstat ( \"link_to_dir5\" , & st ) ) ; assert ( S_ISDIR ( st . st_mode ) ) ; archive_entry_free ( ae ) ; <S2SV_StartBug> assertEqualInt ( ARCHIVE_OK , archive_write_free ( a ) ) ; <S2SV_EndBug> assert ( 0 == lstat ( \"dir\" , & st ) ) ; failure ( \"dir:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 0777 ) == 0755 ) ; assert ( 0 == lstat ( \"link_to_dir\" , & st ) ) ; failure ( \"link_to_dir:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( S_ISLNK ( st . st_mode ) ) ; # if HAVE_LCHMOD failure ( \"link_to_dir:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 07777 ) == 0755 ) ; # endif assert ( 0 == lstat ( \"dir/filea\" , & st ) ) ; failure ( \"dir/filea:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 07777 ) == 0755 ) ; failure ( \"dir/fileb:<S2SV_blank>This<S2SV_blank>file<S2SV_blank>should<S2SV_blank>not<S2SV_blank>have<S2SV_blank>been<S2SV_blank>created\" ) ; assert ( 0 != lstat ( \"dir/fileb\" , & st ) ) ; assert ( 0 == lstat ( \"link_to_dir2\" , & st ) ) ; failure ( \"link_to_dir2<S2SV_blank>should<S2SV_blank>have<S2SV_blank>been<S2SV_blank>re-created<S2SV_blank>as<S2SV_blank>a<S2SV_blank>true<S2SV_blank>dir\" ) ; assert ( S_ISDIR ( st . st_mode ) ) ; failure ( \"link_to_dir2:<S2SV_blank>Implicit<S2SV_blank>dir<S2SV_blank>creation<S2SV_blank>should<S2SV_blank>obey<S2SV_blank>umask,<S2SV_blank>but<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 0777 ) == 0755 ) ; assert ( 0 == lstat ( \"link_to_dir2/filec\" , & st ) ) ; assert ( S_ISREG ( st . st_mode ) ) ; failure ( \"link_to_dir2/filec:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 07777 ) == 0755 ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ae ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertFileExists ( \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ; assert ( 0 == unlink ( \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; archive_write_disk_set_options ( a , ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS ) ; failure ( \"Extracting<S2SV_blank>an<S2SV_blank>absolute<S2SV_blank>path<S2SV_blank>should<S2SV_blank>fail<S2SV_blank>here.\" ) ; assertEqualInt ( ARCHIVE_FAILED , archive_write_header ( a , ae ) ) ; archive_entry_free ( ae ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertFileNotExists ( \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 void isoclns_print ( netdissect_options * ndo , <S2SV_StartBug> const uint8_t * p , u_int length , u_int caplen ) <S2SV_EndBug> { <S2SV_StartBug> if ( caplen <= 1 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"|OSI\" ) ) ; return ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"OSI<S2SV_blank>NLPID<S2SV_blank>%s<S2SV_blank>(0x%02x):<S2SV_blank>\" , tok2str ( nlpid_values , \"Unknown\" , * p ) , * p ) ) ; switch ( * p ) { case NLPID_CLNP : if ( ! clnp_print ( ndo , p , length ) ) <S2SV_StartBug> print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , caplen ) ; <S2SV_EndBug> break ; case NLPID_ESIS : esis_print ( ndo , p , length ) ; return ; case NLPID_ISIS : if ( ! isis_print ( ndo , p , length ) ) <S2SV_StartBug> print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , caplen ) ; <S2SV_EndBug> break ; case NLPID_NULLNS : ND_PRINT ( ( ndo , \"%slength:<S2SV_blank>%u\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , length ) ) ; break ; case NLPID_Q933 : q933_print ( ndo , p + 1 , length - 1 ) ; break ; case NLPID_IP : ip_print ( ndo , p + 1 , length - 1 ) ; break ; case NLPID_IP6 : ip6_print ( ndo , p + 1 , length - 1 ) ; break ; case NLPID_PPP : ppp_print ( ndo , p + 1 , length - 1 ) ; break ; default : if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"OSI<S2SV_blank>NLPID<S2SV_blank>0x%02x<S2SV_blank>unknown\" , * p ) ) ; ND_PRINT ( ( ndo , \"%slength:<S2SV_blank>%u\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , length ) ) ; <S2SV_StartBug> if ( caplen > 1 ) <S2SV_EndBug> <S2SV_StartBug> print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , caplen ) ; <S2SV_EndBug> break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , u_int length <S2SV_ModEnd> ) { if <S2SV_ModStart> { if ( ! ND_TTEST ( * p ) <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> , \"\\\\n\\\\t\" , length <S2SV_ModEnd> ) ; break <S2SV_ModStart> , \"\\\\n\\\\t\" , length <S2SV_ModEnd> ) ; break <S2SV_ModStart> ; if ( length <S2SV_ModEnd> > 1 ) <S2SV_ModStart> , \"\\\\n\\\\t\" , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12894\n\n```\nCWE-125 const char * le64addr_string ( netdissect_options * ndo , const u_char * ep ) { const unsigned int len = 8 ; register u_int i ; register char * cp ; <S2SV_StartBug> register struct enamemem * tp ; <S2SV_EndBug> char buf [ BUFSIZE ] ; tp = lookup_bytestring ( ndo , ep , len ) ; <S2SV_StartBug> if ( tp -> e_name ) <S2SV_EndBug> <S2SV_StartBug> return ( tp -> e_name ) ; <S2SV_EndBug> cp = buf ; for ( i = len ; i > 0 ; -- i ) { * cp ++ = hex [ * ( ep + i - 1 ) >> 4 ] ; * cp ++ = hex [ * ( ep + i - 1 ) & 0xf ] ; * cp ++ = ':' ; } cp -- ; * cp = '\\\\0' ; <S2SV_StartBug> tp -> e_name = strdup ( buf ) ; <S2SV_EndBug> <S2SV_StartBug> if ( tp -> e_name == NULL ) <S2SV_EndBug> ( * ndo -> ndo_error ) ( ndo , \"le64addr_string:<S2SV_blank>strdup(buf)\" ) ; <S2SV_StartBug> return ( tp -> e_name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; register struct bsnamemem <S2SV_ModEnd> * tp ; <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> ) return ( <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> ) ; cp <S2SV_ModStart> ; tp -> bs_name <S2SV_ModEnd> = strdup ( <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11719\n\n```\nCWE-125 static int dnxhd_decode_header ( DNXHDContext * ctx , AVFrame * frame , const uint8_t * buf , int buf_size , int first_field ) { int i , cid , ret ; int old_bit_depth = ctx -> bit_depth , bitdepth ; uint64_t header_prefix ; if ( buf_size < 0x280 ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"buffer<S2SV_blank>too<S2SV_blank>small<S2SV_blank>(%d<S2SV_blank><<S2SV_blank>640).\\\\n\" , buf_size ) ; return AVERROR_INVALIDDATA ; } header_prefix = ff_dnxhd_parse_header_prefix ( buf ) ; if ( header_prefix == 0 ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"unknown<S2SV_blank>header<S2SV_blank>0x%02X<S2SV_blank>0x%02X<S2SV_blank>0x%02X<S2SV_blank>0x%02X<S2SV_blank>0x%02X\\\\n\" , buf [ 0 ] , buf [ 1 ] , buf [ 2 ] , buf [ 3 ] , buf [ 4 ] ) ; return AVERROR_INVALIDDATA ; } if ( buf [ 5 ] & 2 ) { ctx -> cur_field = buf [ 5 ] & 1 ; frame -> interlaced_frame = 1 ; frame -> top_field_first = first_field ^ ctx -> cur_field ; av_log ( ctx -> avctx , AV_LOG_DEBUG , \"interlaced<S2SV_blank>%d,<S2SV_blank>cur<S2SV_blank>field<S2SV_blank>%d\\\\n\" , buf [ 5 ] & 3 , ctx -> cur_field ) ; } else { ctx -> cur_field = 0 ; } ctx -> mbaff = ( buf [ 0x6 ] >> 5 ) & 1 ; ctx -> height = AV_RB16 ( buf + 0x18 ) ; ctx -> width = AV_RB16 ( buf + 0x1a ) ; switch ( buf [ 0x21 ] >> 5 ) { case 1 : bitdepth = 8 ; break ; case 2 : bitdepth = 10 ; break ; case 3 : bitdepth = 12 ; break ; default : av_log ( ctx -> avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>bitdepth<S2SV_blank>indicator<S2SV_blank>(%d)\\\\n\" , buf [ 0x21 ] >> 5 ) ; return AVERROR_INVALIDDATA ; } cid = AV_RB32 ( buf + 0x28 ) ; ctx -> avctx -> profile = dnxhd_get_profile ( cid ) ; if ( ( ret = dnxhd_init_vlc ( ctx , cid , bitdepth ) ) < 0 ) return ret ; if ( ctx -> mbaff && ctx -> cid_table -> cid != 1260 ) av_log ( ctx -> avctx , AV_LOG_WARNING , \"Adaptive<S2SV_blank>MB<S2SV_blank>interlace<S2SV_blank>flag<S2SV_blank>in<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>profile.\\\\n\" ) ; ctx -> act = buf [ 0x2C ] & 7 ; if ( ctx -> act && ctx -> cid_table -> cid != 1256 && ctx -> cid_table -> cid != 1270 ) av_log ( ctx -> avctx , AV_LOG_WARNING , \"Adaptive<S2SV_blank>color<S2SV_blank>transform<S2SV_blank>in<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>profile.\\\\n\" ) ; ctx -> is_444 = ( buf [ 0x2C ] >> 6 ) & 1 ; if ( ctx -> is_444 ) { if ( bitdepth == 8 ) { avpriv_request_sample ( ctx -> avctx , \"4:4:4<S2SV_blank>8<S2SV_blank>bits\" ) ; return AVERROR_INVALIDDATA ; } else if ( bitdepth == 10 ) { ctx -> decode_dct_block = dnxhd_decode_dct_block_10_444 ; ctx -> pix_fmt = ctx -> act ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_GBRP10 ; } else { ctx -> decode_dct_block = dnxhd_decode_dct_block_12_444 ; ctx -> pix_fmt = ctx -> act ? AV_PIX_FMT_YUV444P12 : AV_PIX_FMT_GBRP12 ; } } else if ( bitdepth == 12 ) { ctx -> decode_dct_block = dnxhd_decode_dct_block_12 ; ctx -> pix_fmt = AV_PIX_FMT_YUV422P12 ; } else if ( bitdepth == 10 ) { if ( ctx -> avctx -> profile == FF_PROFILE_DNXHR_HQX ) ctx -> decode_dct_block = dnxhd_decode_dct_block_10_444 ; else ctx -> decode_dct_block = dnxhd_decode_dct_block_10 ; ctx -> pix_fmt = AV_PIX_FMT_YUV422P10 ; } else { ctx -> decode_dct_block = dnxhd_decode_dct_block_8 ; ctx -> pix_fmt = AV_PIX_FMT_YUV422P ; } ctx -> avctx -> bits_per_raw_sample = ctx -> bit_depth = bitdepth ; if ( ctx -> bit_depth != old_bit_depth ) { ff_blockdsp_init ( & ctx -> bdsp , ctx -> avctx ) ; ff_idctdsp_init ( & ctx -> idsp , ctx -> avctx ) ; ff_init_scantable ( ctx -> idsp . idct_permutation , & ctx -> scantable , ff_zigzag_direct ) ; } if ( ctx -> width != ctx -> cid_table -> width && ctx -> cid_table -> width != DNXHD_VARIABLE ) { av_reduce ( & ctx -> avctx -> sample_aspect_ratio . num , & ctx -> avctx -> sample_aspect_ratio . den , ctx -> width , ctx -> cid_table -> width , 255 ) ; ctx -> width = ctx -> cid_table -> width ; } if ( buf_size < ctx -> cid_table -> coding_unit_size ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"incorrect<S2SV_blank>frame<S2SV_blank>size<S2SV_blank>(%d<S2SV_blank><<S2SV_blank>%u).\\\\n\" , buf_size , ctx -> cid_table -> coding_unit_size ) ; return AVERROR_INVALIDDATA ; } ctx -> mb_width = ( ctx -> width + 15 ) >> 4 ; ctx -> mb_height = AV_RB16 ( buf + 0x16c ) ; if ( ( ctx -> height + 15 ) >> 4 == ctx -> mb_height && frame -> interlaced_frame ) ctx -> height <<= 1 ; av_log ( ctx -> avctx , AV_LOG_VERBOSE , \"%dx%d,<S2SV_blank>4:%s<S2SV_blank>%d<S2SV_blank>bits,<S2SV_blank>MBAFF=%d<S2SV_blank>ACT=%d\\\\n\" , ctx -> width , ctx -> height , ctx -> is_444 ? \"4:4\" : \"2:2\" , ctx -> bit_depth , ctx -> mbaff , ctx -> act ) ; if ( ctx -> mb_height > 68 && ff_dnxhd_check_header_prefix_hr ( header_prefix ) ) { ctx -> data_offset = 0x170 + ( ctx -> mb_height << 2 ) ; } else { <S2SV_StartBug> if ( ctx -> mb_height > 68 || <S2SV_EndBug> ( ctx -> mb_height << frame -> interlaced_frame ) > ( ctx -> height + 15 ) >> 4 ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"mb<S2SV_blank>height<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%d\\\\n\" , ctx -> mb_height ) ; return AVERROR_INVALIDDATA ; } <S2SV_StartBug> ctx -> data_offset = 0x280 ; <S2SV_EndBug> } if ( buf_size < ctx -> data_offset ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"buffer<S2SV_blank>too<S2SV_blank>small<S2SV_blank>(%d<S2SV_blank><<S2SV_blank>%d).\\\\n\" , buf_size , ctx -> data_offset ) ; return AVERROR_INVALIDDATA ; } if ( ctx -> mb_height > FF_ARRAY_ELEMS ( ctx -> mb_scan_index ) ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"mb_height<S2SV_blank>too<S2SV_blank>big<S2SV_blank>(%d<S2SV_blank>><S2SV_blank>%\" SIZE_SPECIFIER \").\\\\n\" , ctx -> mb_height , FF_ARRAY_ELEMS ( ctx -> mb_scan_index ) ) ; return AVERROR_INVALIDDATA ; } for ( i = 0 ; i < ctx -> mb_height ; i ++ ) { ctx -> mb_scan_index [ i ] = AV_RB32 ( buf + 0x170 + ( i << 2 ) ) ; ff_dlog ( ctx -> avctx , \"mb<S2SV_blank>scan<S2SV_blank>index<S2SV_blank>%d,<S2SV_blank>pos<S2SV_blank>%d:<S2SV_blank>%\" PRIu32 \"\\\\n\" , i , 0x170 + ( i << 2 ) , ctx -> mb_scan_index [ i ] ) ; if ( buf_size - ctx -> data_offset < ctx -> mb_scan_index [ i ] ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>mb<S2SV_blank>scan<S2SV_blank>index<S2SV_blank>(%\" PRIu32 \"<S2SV_blank>vs<S2SV_blank>%u).\\\\n\" , ctx -> mb_scan_index [ i ] , buf_size - ctx -> data_offset ) ; return AVERROR_INVALIDDATA ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mb_height > 68 ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"mb<S2SV_blank>height<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%d\\\\n\" , ctx -> mb_height ) ; return AVERROR_INVALIDDATA ; } ctx -> data_offset = 0x280 ; } if ( <S2SV_ModEnd> ( ctx -> <S2SV_ModStart> AVERROR_INVALIDDATA ; } <S2SV_ModEnd> if ( buf_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 static int rawv6_sendmsg ( struct sock * sk , struct msghdr * msg , size_t len ) <S2SV_StartBug> { <S2SV_EndBug> struct ipv6_txoptions opt_space ; DECLARE_SOCKADDR ( struct sockaddr_in6 * , sin6 , msg -> msg_name ) ; struct in6_addr * daddr , * final_p , final ; struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct raw6_sock * rp = raw6_sk ( sk ) ; struct ipv6_txoptions * opt = NULL ; struct ip6_flowlabel * flowlabel = NULL ; struct dst_entry * dst = NULL ; struct raw6_frag_vec rfv ; struct flowi6 fl6 ; int addr_len = msg -> msg_namelen ; int hlimit = - 1 ; int tclass = - 1 ; int dontfrag = - 1 ; u16 proto ; int err ; if ( len > INT_MAX ) return - EMSGSIZE ; if ( msg -> msg_flags & MSG_OOB ) return - EOPNOTSUPP ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_mark = sk -> sk_mark ; if ( sin6 ) { if ( addr_len < SIN6_LEN_RFC2133 ) return - EINVAL ; if ( sin6 -> sin6_family && sin6 -> sin6_family != AF_INET6 ) return - EAFNOSUPPORT ; proto = ntohs ( sin6 -> sin6_port ) ; if ( ! proto ) proto = inet -> inet_num ; else if ( proto != inet -> inet_num ) return - EINVAL ; if ( proto > 255 ) return - EINVAL ; daddr = & sin6 -> sin6_addr ; if ( np -> sndflow ) { fl6 . flowlabel = sin6 -> sin6_flowinfo & IPV6_FLOWINFO_MASK ; if ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) { flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( ! flowlabel ) return - EINVAL ; } } if ( sk -> sk_state == TCP_ESTABLISHED && ipv6_addr_equal ( daddr , & sk -> sk_v6_daddr ) ) daddr = & sk -> sk_v6_daddr ; if ( addr_len >= sizeof ( struct sockaddr_in6 ) && sin6 -> sin6_scope_id && __ipv6_addr_needs_scope_id ( __ipv6_addr_type ( daddr ) ) ) fl6 . flowi6_oif = sin6 -> sin6_scope_id ; } else { if ( sk -> sk_state != TCP_ESTABLISHED ) return - EDESTADDRREQ ; proto = inet -> inet_num ; daddr = & sk -> sk_v6_daddr ; fl6 . flowlabel = np -> flow_label ; } if ( fl6 . flowi6_oif == 0 ) fl6 . flowi6_oif = sk -> sk_bound_dev_if ; if ( msg -> msg_controllen ) { opt = & opt_space ; memset ( opt , 0 , sizeof ( struct ipv6_txoptions ) ) ; opt -> tot_len = sizeof ( struct ipv6_txoptions ) ; err = ip6_datagram_send_ctl ( sock_net ( sk ) , sk , msg , & fl6 , opt , & hlimit , & tclass , & dontfrag ) ; if ( err < 0 ) { fl6_sock_release ( flowlabel ) ; return err ; } if ( ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) && ! flowlabel ) { flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( ! flowlabel ) return - EINVAL ; } if ( ! ( opt -> opt_nflen | opt -> opt_flen ) ) opt = NULL ; } if ( ! opt ) <S2SV_StartBug> opt = np -> opt ; <S2SV_EndBug> if ( flowlabel ) opt = fl6_merge_options ( & opt_space , flowlabel , opt ) ; opt = ipv6_fixup_options ( & opt_space , opt ) ; fl6 . flowi6_proto = proto ; rfv . msg = msg ; rfv . hlen = 0 ; err = rawv6_probe_proto_opt ( & rfv , & fl6 ) ; if ( err ) goto out ; if ( ! ipv6_addr_any ( daddr ) ) fl6 . daddr = * daddr ; else fl6 . daddr . s6_addr [ 15 ] = 0x1 ; if ( ipv6_addr_any ( & fl6 . saddr ) && ! ipv6_addr_any ( & np -> saddr ) ) fl6 . saddr = np -> saddr ; final_p = fl6_update_dst ( & fl6 , opt , & final ) ; if ( ! fl6 . flowi6_oif && ipv6_addr_is_multicast ( & fl6 . daddr ) ) fl6 . flowi6_oif = np -> mcast_oif ; else if ( ! fl6 . flowi6_oif ) fl6 . flowi6_oif = np -> ucast_oif ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; if ( inet -> hdrincl ) fl6 . flowi6_flags |= FLOWI_FLAG_KNOWN_NH ; dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) { err = PTR_ERR ( dst ) ; goto out ; } if ( hlimit < 0 ) hlimit = ip6_sk_dst_hoplimit ( np , & fl6 , dst ) ; if ( tclass < 0 ) tclass = np -> tclass ; if ( dontfrag < 0 ) dontfrag = np -> dontfrag ; if ( msg -> msg_flags & MSG_CONFIRM ) goto do_confirm ; back_from_confirm : if ( inet -> hdrincl ) err = rawv6_send_hdrinc ( sk , msg , len , & fl6 , & dst , msg -> msg_flags ) ; else { lock_sock ( sk ) ; err = ip6_append_data ( sk , raw6_getfrag , & rfv , len , 0 , hlimit , tclass , opt , & fl6 , ( struct rt6_info * ) dst , msg -> msg_flags , dontfrag ) ; if ( err ) ip6_flush_pending_frames ( sk ) ; else if ( ! ( msg -> msg_flags & MSG_MORE ) ) err = rawv6_push_pending_frames ( sk , & fl6 , rp ) ; release_sock ( sk ) ; } done : dst_release ( dst ) ; out : fl6_sock_release ( flowlabel ) ; <S2SV_StartBug> return err < 0 ? err : len ; <S2SV_EndBug> do_confirm : dst_confirm ( dst ) ; if ( ! ( msg -> msg_flags & MSG_PROBE ) || len ) goto back_from_confirm ; err = 0 ; goto done ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) { struct ipv6_txoptions * opt_to_free = NULL ; <S2SV_ModStart> ! opt ) { opt = txopt_get ( np ) ; opt_to_free = opt ; } <S2SV_ModEnd> if ( flowlabel <S2SV_ModStart> flowlabel ) ; txopt_put ( opt_to_free ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5728\n\n```\nCWE-119 static long vop_ioctl ( struct file * f , unsigned int cmd , unsigned long arg ) { struct vop_vdev * vdev = f -> private_data ; struct vop_info * vi = vdev -> vi ; void __user * argp = ( void __user * ) arg ; int ret ; switch ( cmd ) { case MIC_VIRTIO_ADD_DEVICE : { struct mic_device_desc dd , * dd_config ; if ( copy_from_user ( & dd , argp , sizeof ( dd ) ) ) return - EFAULT ; if ( mic_aligned_desc_size ( & dd ) > MIC_MAX_DESC_BLK_SIZE || dd . num_vq > MIC_MAX_VRINGS ) return - EINVAL ; dd_config = kzalloc ( mic_desc_size ( & dd ) , GFP_KERNEL ) ; if ( ! dd_config ) return - ENOMEM ; if ( copy_from_user ( dd_config , argp , mic_desc_size ( & dd ) ) ) { ret = - EFAULT ; goto free_ret ; } <S2SV_StartBug> mutex_lock ( & vdev -> vdev_mutex ) ; <S2SV_EndBug> mutex_lock ( & vi -> vop_mutex ) ; ret = vop_virtio_add_device ( vdev , dd_config ) ; if ( ret ) goto unlock_ret ; list_add_tail ( & vdev -> list , & vi -> vdev_list ) ; unlock_ret : mutex_unlock ( & vi -> vop_mutex ) ; mutex_unlock ( & vdev -> vdev_mutex ) ; free_ret : kfree ( dd_config ) ; return ret ; } case MIC_VIRTIO_COPY_DESC : { struct mic_copy_desc copy ; mutex_lock ( & vdev -> vdev_mutex ) ; ret = vop_vdev_inited ( vdev ) ; if ( ret ) goto _unlock_ret ; if ( copy_from_user ( & copy , argp , sizeof ( copy ) ) ) { ret = - EFAULT ; goto _unlock_ret ; } ret = vop_virtio_copy_desc ( vdev , & copy ) ; if ( ret < 0 ) goto _unlock_ret ; if ( copy_to_user ( & ( ( struct mic_copy_desc __user * ) argp ) -> out_len , & copy . out_len , sizeof ( copy . out_len ) ) ) ret = - EFAULT ; _unlock_ret : mutex_unlock ( & vdev -> vdev_mutex ) ; return ret ; } case MIC_VIRTIO_CONFIG_CHANGE : { void * buf ; mutex_lock ( & vdev -> vdev_mutex ) ; ret = vop_vdev_inited ( vdev ) ; if ( ret ) goto __unlock_ret ; buf = kzalloc ( vdev -> dd -> config_len , GFP_KERNEL ) ; if ( ! buf ) { ret = - ENOMEM ; goto __unlock_ret ; } if ( copy_from_user ( buf , argp , vdev -> dd -> config_len ) ) { ret = - EFAULT ; goto done ; } ret = vop_virtio_config_change ( vdev , buf ) ; done : kfree ( buf ) ; __unlock_ret : mutex_unlock ( & vdev -> vdev_mutex ) ; return ret ; } default : return - ENOIOCTLCMD ; } ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> free_ret ; } if ( memcmp ( & dd , dd_config , sizeof ( dd ) ) ) { ret = - EINVAL ; goto free_ret ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4565\n\n```\nCWE-264 static ssize_t hfi1_file_write ( struct file * fp , const char __user * data , size_t count , loff_t * offset ) { const struct hfi1_cmd __user * ucmd ; struct hfi1_filedata * fd = fp -> private_data ; struct hfi1_ctxtdata * uctxt = fd -> uctxt ; struct hfi1_cmd cmd ; struct hfi1_user_info uinfo ; struct hfi1_tid_info tinfo ; unsigned long addr ; ssize_t consumed = 0 , copy = 0 , ret = 0 ; void * dest = NULL ; __u64 user_val = 0 ; int uctxt_required = 1 ; int must_be_root = 0 ; <S2SV_StartBug> if ( count < sizeof ( cmd ) ) { <S2SV_EndBug> ret = - EINVAL ; goto bail ; } ucmd = ( const struct hfi1_cmd __user * ) data ; if ( copy_from_user ( & cmd , ucmd , sizeof ( cmd ) ) ) { ret = - EFAULT ; goto bail ; } consumed = sizeof ( cmd ) ; switch ( cmd . type ) { case HFI1_CMD_ASSIGN_CTXT : uctxt_required = 0 ; copy = sizeof ( uinfo ) ; dest = & uinfo ; break ; case HFI1_CMD_SDMA_STATUS_UPD : case HFI1_CMD_CREDIT_UPD : copy = 0 ; break ; case HFI1_CMD_TID_UPDATE : case HFI1_CMD_TID_FREE : case HFI1_CMD_TID_INVAL_READ : copy = sizeof ( tinfo ) ; dest = & tinfo ; break ; case HFI1_CMD_USER_INFO : case HFI1_CMD_RECV_CTRL : case HFI1_CMD_POLL_TYPE : case HFI1_CMD_ACK_EVENT : case HFI1_CMD_CTXT_INFO : case HFI1_CMD_SET_PKEY : case HFI1_CMD_CTXT_RESET : copy = 0 ; user_val = cmd . addr ; break ; case HFI1_CMD_EP_INFO : case HFI1_CMD_EP_ERASE_CHIP : case HFI1_CMD_EP_ERASE_RANGE : case HFI1_CMD_EP_READ_RANGE : case HFI1_CMD_EP_WRITE_RANGE : uctxt_required = 0 ; must_be_root = 1 ; copy = 0 ; break ; default : ret = - EINVAL ; goto bail ; } if ( copy ) { if ( copy_from_user ( dest , ( void __user * ) cmd . addr , copy ) ) { ret = - EFAULT ; goto bail ; } consumed += copy ; } if ( uctxt_required && ! uctxt ) { ret = - EINVAL ; goto bail ; } if ( must_be_root && ! capable ( CAP_SYS_ADMIN ) ) { ret = - EPERM ; goto bail ; } switch ( cmd . type ) { case HFI1_CMD_ASSIGN_CTXT : ret = assign_ctxt ( fp , & uinfo ) ; if ( ret < 0 ) goto bail ; ret = setup_ctxt ( fp ) ; if ( ret ) goto bail ; ret = user_init ( fp ) ; break ; case HFI1_CMD_CTXT_INFO : ret = get_ctxt_info ( fp , ( void __user * ) ( unsigned long ) user_val , cmd . len ) ; break ; case HFI1_CMD_USER_INFO : ret = get_base_info ( fp , ( void __user * ) ( unsigned long ) user_val , cmd . len ) ; break ; case HFI1_CMD_SDMA_STATUS_UPD : break ; case HFI1_CMD_CREDIT_UPD : if ( uctxt && uctxt -> sc ) sc_return_credits ( uctxt -> sc ) ; break ; case HFI1_CMD_TID_UPDATE : ret = hfi1_user_exp_rcv_setup ( fp , & tinfo ) ; if ( ! ret ) { addr = ( unsigned long ) cmd . addr + offsetof ( struct hfi1_tid_info , tidcnt ) ; if ( copy_to_user ( ( void __user * ) addr , & tinfo . tidcnt , sizeof ( tinfo . tidcnt ) + sizeof ( tinfo . length ) ) ) ret = - EFAULT ; } break ; case HFI1_CMD_TID_INVAL_READ : ret = hfi1_user_exp_rcv_invalid ( fp , & tinfo ) ; if ( ret ) break ; addr = ( unsigned long ) cmd . addr + offsetof ( struct hfi1_tid_info , tidcnt ) ; if ( copy_to_user ( ( void __user * ) addr , & tinfo . tidcnt , sizeof ( tinfo . tidcnt ) ) ) ret = - EFAULT ; break ; case HFI1_CMD_TID_FREE : ret = hfi1_user_exp_rcv_clear ( fp , & tinfo ) ; if ( ret ) break ; addr = ( unsigned long ) cmd . addr + offsetof ( struct hfi1_tid_info , tidcnt ) ; if ( copy_to_user ( ( void __user * ) addr , & tinfo . tidcnt , sizeof ( tinfo . tidcnt ) ) ) ret = - EFAULT ; break ; case HFI1_CMD_RECV_CTRL : ret = manage_rcvq ( uctxt , fd -> subctxt , ( int ) user_val ) ; break ; case HFI1_CMD_POLL_TYPE : uctxt -> poll_type = ( typeof ( uctxt -> poll_type ) ) user_val ; break ; case HFI1_CMD_ACK_EVENT : ret = user_event_ack ( uctxt , fd -> subctxt , user_val ) ; break ; case HFI1_CMD_SET_PKEY : if ( HFI1_CAP_IS_USET ( PKEY_CHECK ) ) ret = set_ctxt_pkey ( uctxt , fd -> subctxt , user_val ) ; else ret = - EPERM ; break ; case HFI1_CMD_CTXT_RESET : { struct send_context * sc ; struct hfi1_devdata * dd ; if ( ! uctxt || ! uctxt -> dd || ! uctxt -> sc ) { ret = - EINVAL ; break ; } dd = uctxt -> dd ; sc = uctxt -> sc ; wait_event_interruptible_timeout ( sc -> halt_wait , ( sc -> flags & SCF_HALTED ) , msecs_to_jiffies ( SEND_CTXT_HALT_TIMEOUT ) ) ; if ( ! ( sc -> flags & SCF_HALTED ) ) { ret = - ENOLCK ; break ; } if ( sc -> flags & SCF_FROZEN ) { wait_event_interruptible_timeout ( dd -> event_queue , ! ( ACCESS_ONCE ( dd -> flags ) & HFI1_FROZEN ) , msecs_to_jiffies ( SEND_CTXT_HALT_TIMEOUT ) ) ; if ( dd -> flags & HFI1_FROZEN ) { ret = - ENOLCK ; break ; } if ( dd -> flags & HFI1_FORCED_FREEZE ) { ret = - ENODEV ; break ; } sc_disable ( sc ) ; ret = sc_enable ( sc ) ; hfi1_rcvctrl ( dd , HFI1_RCVCTRL_CTXT_ENB , uctxt -> ctxt ) ; } else { ret = sc_restart ( sc ) ; } if ( ! ret ) sc_return_credits ( sc ) ; break ; } case HFI1_CMD_EP_INFO : case HFI1_CMD_EP_ERASE_CHIP : case HFI1_CMD_EP_ERASE_RANGE : case HFI1_CMD_EP_READ_RANGE : case HFI1_CMD_EP_WRITE_RANGE : ret = handle_eprom_command ( fp , & cmd ) ; break ; } if ( ret >= 0 ) ret = consumed ; bail : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( WARN_ON_ONCE ( ! ib_safe_file_access ( fp ) ) ) return - EACCES ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14502\n\n```\nCWE-125 static int read_header ( struct archive_read * a , struct archive_entry * entry , char head_type ) { const void * h ; const char * p , * endp ; struct rar * rar ; struct rar_header rar_header ; struct rar_file_header file_header ; int64_t header_size ; unsigned filename_size , end ; char * filename ; char * strp ; char packed_size [ 8 ] ; char unp_size [ 8 ] ; int ttime ; struct archive_string_conv * sconv , * fn_sconv ; unsigned long crc32_val ; int ret = ( ARCHIVE_OK ) , ret2 ; rar = ( struct rar * ) ( a -> format -> data ) ; sconv = rar -> opt_sconv ; if ( sconv == NULL ) { if ( ! rar -> init_default_conversion ) { rar -> sconv_default = archive_string_default_conversion_for_read ( & ( a -> archive ) ) ; rar -> init_default_conversion = 1 ; } sconv = rar -> sconv_default ; } if ( ( h = __archive_read_ahead ( a , 7 , NULL ) ) == NULL ) return ( ARCHIVE_FATAL ) ; p = h ; memcpy ( & rar_header , p , sizeof ( rar_header ) ) ; rar -> file_flags = archive_le16dec ( rar_header . flags ) ; header_size = archive_le16dec ( rar_header . size ) ; if ( header_size < ( int64_t ) sizeof ( file_header ) + 7 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>header<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } crc32_val = crc32 ( 0 , ( const unsigned char * ) p + 2 , 7 - 2 ) ; __archive_read_consume ( a , 7 ) ; if ( ! ( rar -> file_flags & FHD_SOLID ) ) { rar -> compression_method = 0 ; rar -> packed_size = 0 ; rar -> unp_size = 0 ; rar -> mtime = 0 ; rar -> ctime = 0 ; rar -> atime = 0 ; rar -> arctime = 0 ; rar -> mode = 0 ; memset ( & rar -> salt , 0 , sizeof ( rar -> salt ) ) ; rar -> atime = 0 ; rar -> ansec = 0 ; rar -> ctime = 0 ; rar -> cnsec = 0 ; rar -> mtime = 0 ; rar -> mnsec = 0 ; rar -> arctime = 0 ; rar -> arcnsec = 0 ; } else { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"RAR<S2SV_blank>solid<S2SV_blank>archive<S2SV_blank>support<S2SV_blank>unavailable.\" ) ; return ( ARCHIVE_FATAL ) ; } if ( ( h = __archive_read_ahead ( a , ( size_t ) header_size - 7 , NULL ) ) == NULL ) return ( ARCHIVE_FATAL ) ; crc32_val = crc32 ( crc32_val , h , ( unsigned ) ( header_size - 7 ) ) ; if ( ( crc32_val & 0xffff ) != archive_le16dec ( rar_header . crc ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Header<S2SV_blank>CRC<S2SV_blank>error\" ) ; return ( ARCHIVE_FATAL ) ; } p = h ; endp = p + header_size - 7 ; memcpy ( & file_header , p , sizeof ( file_header ) ) ; p += sizeof ( file_header ) ; rar -> compression_method = file_header . method ; ttime = archive_le32dec ( file_header . file_time ) ; rar -> mtime = get_time ( ttime ) ; rar -> file_crc = archive_le32dec ( file_header . file_crc ) ; if ( rar -> file_flags & FHD_PASSWORD ) { archive_entry_set_is_data_encrypted ( entry , 1 ) ; rar -> has_encrypted_entries = 1 ; archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"RAR<S2SV_blank>encryption<S2SV_blank>support<S2SV_blank>unavailable.\" ) ; } if ( rar -> file_flags & FHD_LARGE ) { memcpy ( packed_size , file_header . pack_size , 4 ) ; memcpy ( packed_size + 4 , p , 4 ) ; p += 4 ; memcpy ( unp_size , file_header . unp_size , 4 ) ; memcpy ( unp_size + 4 , p , 4 ) ; p += 4 ; rar -> packed_size = archive_le64dec ( & packed_size ) ; rar -> unp_size = archive_le64dec ( & unp_size ) ; } else { rar -> packed_size = archive_le32dec ( file_header . pack_size ) ; rar -> unp_size = archive_le32dec ( file_header . unp_size ) ; } if ( rar -> packed_size < 0 || rar -> unp_size < 0 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>sizes<S2SV_blank>specified.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> bytes_remaining = rar -> packed_size ; if ( head_type == NEWSUB_HEAD ) { size_t distance = p - ( const char * ) h ; header_size += rar -> packed_size ; if ( ( h = __archive_read_ahead ( a , ( size_t ) header_size - 7 , NULL ) ) == NULL ) return ( ARCHIVE_FATAL ) ; p = h ; endp = p + header_size - 7 ; p += distance ; } filename_size = archive_le16dec ( file_header . name_size ) ; if ( p + filename_size > endp ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>filename<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } if ( rar -> filename_allocated < filename_size * 2 + 2 ) { char * newptr ; size_t newsize = filename_size * 2 + 2 ; newptr = realloc ( rar -> filename , newsize ) ; if ( newptr == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>memory.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> filename = newptr ; rar -> filename_allocated = newsize ; } filename = rar -> filename ; memcpy ( filename , p , filename_size ) ; filename [ filename_size ] = '\\\\0' ; if ( rar -> file_flags & FHD_UNICODE ) { if ( filename_size != strlen ( filename ) ) { unsigned char highbyte , flagbits , flagbyte ; unsigned fn_end , offset ; end = filename_size ; fn_end = filename_size * 2 ; filename_size = 0 ; offset = ( unsigned ) strlen ( filename ) + 1 ; highbyte = * ( p + offset ++ ) ; flagbits = 0 ; flagbyte = 0 ; while ( offset < end && filename_size < fn_end ) { if ( ! flagbits ) { flagbyte = * ( p + offset ++ ) ; flagbits = 8 ; } flagbits -= 2 ; switch ( ( flagbyte >> flagbits ) & 3 ) { case 0 : filename [ filename_size ++ ] = '\\\\0' ; filename [ filename_size ++ ] = * ( p + offset ++ ) ; break ; case 1 : filename [ filename_size ++ ] = highbyte ; filename [ filename_size ++ ] = * ( p + offset ++ ) ; break ; case 2 : filename [ filename_size ++ ] = * ( p + offset + 1 ) ; filename [ filename_size ++ ] = * ( p + offset ) ; offset += 2 ; break ; case 3 : { char extra , high ; uint8_t length = * ( p + offset ++ ) ; if ( length & 0x80 ) { extra = * ( p + offset ++ ) ; high = ( char ) highbyte ; } else extra = high = 0 ; length = ( length & 0x7f ) + 2 ; while ( length && filename_size < fn_end ) { unsigned cp = filename_size >> 1 ; filename [ filename_size ++ ] = high ; filename [ filename_size ++ ] = p [ cp ] + extra ; length -- ; } } break ; } } if ( filename_size > fn_end ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>filename\" ) ; return ( ARCHIVE_FATAL ) ; } filename [ filename_size ++ ] = '\\\\0' ; <S2SV_StartBug> filename [ filename_size ++ ] = '\\\\0' ; <S2SV_EndBug> if ( rar -> sconv_utf16be == NULL ) { rar -> sconv_utf16be = archive_string_conversion_from_charset ( & a -> archive , \"UTF-16BE\" , 1 ) ; if ( rar -> sconv_utf16be == NULL ) return ( ARCHIVE_FATAL ) ; } fn_sconv = rar -> sconv_utf16be ; strp = filename ; while ( memcmp ( strp , \"\\\\x00\\\\x00\" , 2 ) ) { if ( ! memcmp ( strp , \"\\\\x00\\\\\\\\\" , 2 ) ) * ( strp + 1 ) = '/' ; strp += 2 ; } p += offset ; } else { if ( rar -> sconv_utf8 == NULL ) { rar -> sconv_utf8 = archive_string_conversion_from_charset ( & a -> archive , \"UTF-8\" , 1 ) ; if ( rar -> sconv_utf8 == NULL ) return ( ARCHIVE_FATAL ) ; } fn_sconv = rar -> sconv_utf8 ; while ( ( strp = strchr ( filename , '\\\\\\\\' ) ) != NULL ) * strp = '/' ; p += filename_size ; } } else { fn_sconv = sconv ; while ( ( strp = strchr ( filename , '\\\\\\\\' ) ) != NULL ) * strp = '/' ; p += filename_size ; } if ( rar -> filename_save && filename_size == rar -> filename_save_size && ! memcmp ( rar -> filename , rar -> filename_save , filename_size + 1 ) ) { __archive_read_consume ( a , header_size - 7 ) ; rar -> cursor ++ ; if ( rar -> cursor >= rar -> nodes ) { rar -> nodes ++ ; if ( ( rar -> dbo = realloc ( rar -> dbo , sizeof ( * rar -> dbo ) * rar -> nodes ) ) == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>memory.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> dbo [ rar -> cursor ] . header_size = header_size ; rar -> dbo [ rar -> cursor ] . start_offset = - 1 ; rar -> dbo [ rar -> cursor ] . end_offset = - 1 ; } if ( rar -> dbo [ rar -> cursor ] . start_offset < 0 ) { rar -> dbo [ rar -> cursor ] . start_offset = a -> filter -> position ; rar -> dbo [ rar -> cursor ] . end_offset = rar -> dbo [ rar -> cursor ] . start_offset + rar -> packed_size ; } return ret ; } rar -> filename_save = ( char * ) realloc ( rar -> filename_save , filename_size + 1 ) ; memcpy ( rar -> filename_save , rar -> filename , filename_size + 1 ) ; rar -> filename_save_size = filename_size ; free ( rar -> dbo ) ; if ( ( rar -> dbo = calloc ( 1 , sizeof ( * rar -> dbo ) ) ) == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>memory.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> dbo [ 0 ] . header_size = header_size ; rar -> dbo [ 0 ] . start_offset = - 1 ; rar -> dbo [ 0 ] . end_offset = - 1 ; rar -> cursor = 0 ; rar -> nodes = 1 ; if ( rar -> file_flags & FHD_SALT ) { if ( p + 8 > endp ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>header<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } memcpy ( rar -> salt , p , 8 ) ; p += 8 ; } if ( rar -> file_flags & FHD_EXTTIME ) { if ( read_exttime ( p , rar , endp ) < 0 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>header<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } } __archive_read_consume ( a , header_size - 7 ) ; rar -> dbo [ 0 ] . start_offset = a -> filter -> position ; rar -> dbo [ 0 ] . end_offset = rar -> dbo [ 0 ] . start_offset + rar -> packed_size ; switch ( file_header . host_os ) { case OS_MSDOS : case OS_OS2 : case OS_WIN32 : rar -> mode = archive_le32dec ( file_header . file_attr ) ; if ( rar -> mode & FILE_ATTRIBUTE_DIRECTORY ) rar -> mode = AE_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH ; else rar -> mode = AE_IFREG ; rar -> mode |= S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ; break ; case OS_UNIX : case OS_MAC_OS : case OS_BEOS : rar -> mode = archive_le32dec ( file_header . file_attr ) ; break ; default : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unknown<S2SV_blank>file<S2SV_blank>attributes<S2SV_blank>from<S2SV_blank>RAR<S2SV_blank>file\\'s<S2SV_blank>host<S2SV_blank>OS\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> bytes_uncopied = rar -> bytes_unconsumed = 0 ; rar -> lzss . position = rar -> offset = 0 ; rar -> offset_seek = 0 ; rar -> dictionary_size = 0 ; rar -> offset_outgoing = 0 ; rar -> br . cache_avail = 0 ; rar -> br . avail_in = 0 ; rar -> crc_calculated = 0 ; rar -> entry_eof = 0 ; rar -> valid = 1 ; rar -> is_ppmd_block = 0 ; rar -> start_new_table = 1 ; free ( rar -> unp_buffer ) ; rar -> unp_buffer = NULL ; rar -> unp_offset = 0 ; rar -> unp_buffer_size = UNP_BUFFER_SIZE ; memset ( rar -> lengthtable , 0 , sizeof ( rar -> lengthtable ) ) ; __archive_ppmd7_functions . Ppmd7_Free ( & rar -> ppmd7_context , & g_szalloc ) ; rar -> ppmd_valid = rar -> ppmd_eod = 0 ; if ( head_type == NEWSUB_HEAD ) return ret ; archive_entry_set_mtime ( entry , rar -> mtime , rar -> mnsec ) ; archive_entry_set_ctime ( entry , rar -> ctime , rar -> cnsec ) ; archive_entry_set_atime ( entry , rar -> atime , rar -> ansec ) ; archive_entry_set_size ( entry , rar -> unp_size ) ; archive_entry_set_mode ( entry , rar -> mode ) ; if ( archive_entry_copy_pathname_l ( entry , filename , filename_size , fn_sconv ) ) { if ( errno == ENOMEM ) { archive_set_error ( & a -> archive , ENOMEM , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Pathname\" ) ; return ( ARCHIVE_FATAL ) ; } archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Pathname<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>converted<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>current<S2SV_blank>locale.\" , archive_string_conversion_charset_name ( fn_sconv ) ) ; ret = ( ARCHIVE_WARN ) ; } if ( ( ( rar -> mode ) & AE_IFMT ) == AE_IFLNK ) { rar -> bytes_remaining = 0 ; archive_entry_set_size ( entry , 0 ) ; if ( ( ret2 = read_symlink_stored ( a , entry , sconv ) ) < ( ARCHIVE_WARN ) ) return ret2 ; if ( ret > ret2 ) ret = ret2 ; } if ( rar -> bytes_remaining == 0 ) rar -> entry_eof = 1 ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filename [ filename_size <S2SV_ModEnd> ] = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int jffs2_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int rc , xprefix ; switch ( type ) { case ACL_TYPE_ACCESS : xprefix = JFFS2_XPREFIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> umode_t mode = inode -> i_mode ; <S2SV_EndBug> <S2SV_StartBug> rc = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> if ( rc < 0 ) return rc ; if ( inode -> i_mode != mode ) { struct iattr attr ; attr . ia_valid = ATTR_MODE | ATTR_CTIME ; attr . ia_mode = mode ; attr . ia_ctime = CURRENT_TIME_SEC ; rc = jffs2_do_setattr ( inode , & attr ) ; if ( rc < 0 ) return rc ; } <S2SV_StartBug> if ( rc == 0 ) <S2SV_EndBug> acl = NULL ; } break ; case ACL_TYPE_DEFAULT : xprefix = JFFS2_XPREFIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } rc = __jffs2_set_acl ( inode , xprefix , acl ) ; if ( ! rc ) set_cached_acl ( inode , type , acl ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { umode_t mode ; rc = posix_acl_update_mode ( inode <S2SV_ModEnd> , & mode <S2SV_ModStart> , & mode , & acl ) ; if ( rc <S2SV_ModEnd> ) return rc <S2SV_ModStart> rc ; } <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_init_port ( struct asd_sas_port * port , struct sas_ha_struct * sas_ha , int i ) { memset ( port , 0 , sizeof ( * port ) ) ; port -> id = i ; INIT_LIST_HEAD ( & port -> dev_list ) ; INIT_LIST_HEAD ( & port -> disco_list ) ; INIT_LIST_HEAD ( & port -> destroy_list ) ; <S2SV_StartBug> spin_lock_init ( & port -> phy_list_lock ) ; <S2SV_EndBug> INIT_LIST_HEAD ( & port -> phy_list ) ; port -> ha = sas_ha ; spin_lock_init ( & port -> dev_list_lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> destroy_list ) ; INIT_LIST_HEAD ( & port -> sas_port_del_list ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11664\n\n```\nCWE-125 struct _mdi * _WM_ParseNewHmp ( uint8_t * hmp_data , uint32_t hmp_size ) { uint8_t is_hmp2 = 0 ; uint32_t zero_cnt = 0 ; uint32_t i = 0 ; uint32_t hmp_file_length = 0 ; uint32_t hmp_chunks = 0 ; uint32_t hmp_divisions = 0 ; uint32_t hmp_unknown = 0 ; uint32_t hmp_bpm = 0 ; uint32_t hmp_song_time = 0 ; struct _mdi * hmp_mdi ; uint8_t * * hmp_chunk ; uint32_t * chunk_length ; uint32_t * chunk_ofs ; uint32_t * chunk_delta ; uint8_t * chunk_end ; uint32_t chunk_num = 0 ; uint32_t hmp_track = 0 ; uint32_t smallest_delta = 0 ; uint32_t subtract_delta = 0 ; uint32_t end_of_chunks = 0 ; uint32_t var_len_shift = 0 ; float tempo_f = 500000.0 ; float samples_per_delta_f = 0.0 ; uint32_t sample_count = 0 ; float sample_count_f = 0 ; float sample_remainder = 0 ; if ( memcmp ( hmp_data , \"HMIMIDIP\" , 8 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMP , NULL , 0 ) ; return NULL ; } hmp_data += 8 ; hmp_size -= 8 ; if ( ! memcmp ( hmp_data , \"013195\" , 6 ) ) { hmp_data += 6 ; hmp_size -= 6 ; is_hmp2 = 1 ; } if ( is_hmp2 ) { zero_cnt = 18 ; } else { zero_cnt = 24 ; } for ( i = 0 ; i < zero_cnt ; i ++ ) { if ( hmp_data [ i ] != 0 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMP , NULL , 0 ) ; return NULL ; } } hmp_data += zero_cnt ; hmp_size -= zero_cnt ; hmp_file_length = * hmp_data ++ ; hmp_file_length += ( * hmp_data ++ << 8 ) ; hmp_file_length += ( * hmp_data ++ << 16 ) ; hmp_file_length += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; UNUSED ( hmp_file_length ) ; hmp_data += 12 ; hmp_size -= 12 ; hmp_chunks = * hmp_data ++ ; hmp_chunks += ( * hmp_data ++ << 8 ) ; hmp_chunks += ( * hmp_data ++ << 16 ) ; hmp_chunks += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; hmp_unknown = * hmp_data ++ ; hmp_unknown += ( * hmp_data ++ << 8 ) ; hmp_unknown += ( * hmp_data ++ << 16 ) ; hmp_unknown += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; UNUSED ( hmp_unknown ) ; hmp_divisions = 60 ; hmp_bpm = * hmp_data ++ ; hmp_bpm += ( * hmp_data ++ << 8 ) ; hmp_bpm += ( * hmp_data ++ << 16 ) ; hmp_bpm += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; if ( ( _WM_MixerOptions & WM_MO_ROUNDTEMPO ) ) { tempo_f = ( float ) ( 60000000 / hmp_bpm ) + 0.5f ; } else { tempo_f = ( float ) ( 60000000 / hmp_bpm ) ; } samples_per_delta_f = _WM_GetSamplesPerTick ( hmp_divisions , tempo_f ) ; hmp_song_time = * hmp_data ++ ; hmp_song_time += ( * hmp_data ++ << 8 ) ; hmp_song_time += ( * hmp_data ++ << 16 ) ; hmp_song_time += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; UNUSED ( hmp_song_time ) ; if ( is_hmp2 ) { hmp_data += 840 ; hmp_size -= 840 ; } else { hmp_data += 712 ; hmp_size -= 712 ; } hmp_mdi = _WM_initMDI ( ) ; _WM_midi_setup_divisions ( hmp_mdi , hmp_divisions ) ; _WM_midi_setup_tempo ( hmp_mdi , ( uint32_t ) tempo_f ) ; hmp_chunk = malloc ( sizeof ( uint8_t * ) * hmp_chunks ) ; chunk_length = malloc ( sizeof ( uint32_t ) * hmp_chunks ) ; chunk_delta = malloc ( sizeof ( uint32_t ) * hmp_chunks ) ; chunk_ofs = malloc ( sizeof ( uint32_t ) * hmp_chunks ) ; chunk_end = malloc ( sizeof ( uint8_t ) * hmp_chunks ) ; smallest_delta = 0xffffffff ; for ( i = 0 ; i < hmp_chunks ; i ++ ) { hmp_chunk [ i ] = hmp_data ; chunk_ofs [ i ] = 0 ; chunk_num = * hmp_data ++ ; chunk_num += ( * hmp_data ++ << 8 ) ; chunk_num += ( * hmp_data ++ << 16 ) ; chunk_num += ( * hmp_data ++ << 24 ) ; chunk_ofs [ i ] += 4 ; UNUSED ( chunk_num ) ; chunk_length [ i ] = * hmp_data ++ ; chunk_length [ i ] += ( * hmp_data ++ << 8 ) ; chunk_length [ i ] += ( * hmp_data ++ << 16 ) ; chunk_length [ i ] += ( * hmp_data ++ << 24 ) ; chunk_ofs [ i ] += 4 ; if ( chunk_length [ i ] > hmp_size ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMP , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmp_end ; } hmp_size -= chunk_length [ i ] ; hmp_track = * hmp_data ++ ; hmp_track += ( * hmp_data ++ << 8 ) ; hmp_track += ( * hmp_data ++ << 16 ) ; hmp_track += ( * hmp_data ++ << 24 ) ; chunk_ofs [ i ] += 4 ; UNUSED ( hmp_track ) ; chunk_delta [ i ] = 0 ; var_len_shift = 0 ; if ( * hmp_data < 0x80 ) { do { chunk_delta [ i ] = chunk_delta [ i ] | ( ( * hmp_data ++ & 0x7F ) << var_len_shift ) ; var_len_shift += 7 ; chunk_ofs [ i ] ++ ; } while ( * hmp_data < 0x80 ) ; } chunk_delta [ i ] = chunk_delta [ i ] | ( ( * hmp_data ++ & 0x7F ) << var_len_shift ) ; chunk_ofs [ i ] ++ ; if ( chunk_delta [ i ] < smallest_delta ) { smallest_delta = chunk_delta [ i ] ; } <S2SV_StartBug> hmp_data = hmp_chunk [ i ] + chunk_length [ i ] ; <S2SV_EndBug> hmp_chunk [ i ] += chunk_ofs [ i ] ++ ; chunk_end [ i ] = 0 ; } subtract_delta = smallest_delta ; sample_count_f = ( ( ( float ) smallest_delta * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; hmp_mdi -> events [ hmp_mdi -> event_count - 1 ] . samples_to_next += sample_count ; hmp_mdi -> extra_info . approx_total_samples += sample_count ; while ( end_of_chunks < hmp_chunks ) { smallest_delta = 0 ; for ( i = 0 ; i < hmp_chunks ; i ++ ) { if ( chunk_end [ i ] ) continue ; if ( chunk_delta [ i ] ) { chunk_delta [ i ] -= subtract_delta ; if ( chunk_delta [ i ] ) { if ( ( ! smallest_delta ) || ( smallest_delta > chunk_delta [ i ] ) ) { smallest_delta = chunk_delta [ i ] ; } continue ; } } do { if ( ( ( hmp_chunk [ i ] [ 0 ] & 0xf0 ) == 0xb0 ) && ( ( hmp_chunk [ i ] [ 1 ] == 110 ) || ( hmp_chunk [ i ] [ 1 ] == 111 ) ) && ( hmp_chunk [ i ] [ 2 ] > 0x7f ) ) { hmp_chunk [ i ] += 3 ; <S2SV_StartBug> } else { <S2SV_EndBug> uint32_t setup_ret = 0 ; <S2SV_StartBug> if ( ( setup_ret = _WM_SetupMidiEvent ( hmp_mdi , hmp_chunk [ i ] , 0 ) ) == 0 ) { <S2SV_EndBug> goto _hmp_end ; } if ( ( hmp_chunk [ i ] [ 0 ] == 0xff ) && ( hmp_chunk [ i ] [ 1 ] == 0x2f ) && ( hmp_chunk [ i ] [ 2 ] == 0x00 ) ) { end_of_chunks ++ ; <S2SV_StartBug> chunk_end [ i ] = 1 ; <S2SV_EndBug> hmp_chunk [ i ] += 3 ; goto NEXT_CHUNK ; } else if ( ( hmp_chunk [ i ] [ 0 ] == 0xff ) && ( hmp_chunk [ i ] [ 1 ] == 0x51 ) && ( hmp_chunk [ i ] [ 2 ] == 0x03 ) ) { tempo_f = ( float ) ( ( hmp_chunk [ i ] [ 3 ] << 16 ) + ( hmp_chunk [ i ] [ 4 ] << 8 ) + hmp_chunk [ i ] [ 5 ] ) ; if ( tempo_f == 0.0 ) tempo_f = 500000.0 ; fprintf ( stderr , \"DEBUG:<S2SV_blank>Tempo<S2SV_blank>change<S2SV_blank>%f\\\\r\\\\n\" , tempo_f ) ; } hmp_chunk [ i ] += setup_ret ; <S2SV_StartBug> } <S2SV_EndBug> var_len_shift = 0 ; chunk_delta [ i ] = 0 ; <S2SV_StartBug> if ( * hmp_chunk [ i ] < 0x80 ) { <S2SV_EndBug> do { <S2SV_StartBug> chunk_delta [ i ] = chunk_delta [ i ] + ( ( * hmp_chunk [ i ] & 0x7F ) << var_len_shift ) ; <S2SV_EndBug> var_len_shift += 7 ; hmp_chunk [ i ] ++ ; <S2SV_StartBug> } while ( * hmp_chunk [ i ] < 0x80 ) ; <S2SV_EndBug> } <S2SV_StartBug> chunk_delta [ i ] = chunk_delta [ i ] + ( ( * hmp_chunk [ i ] & 0x7F ) << var_len_shift ) ; <S2SV_EndBug> <S2SV_StartBug> hmp_chunk [ i ] ++ ; <S2SV_EndBug> } while ( ! chunk_delta [ i ] ) ; if ( ( ! smallest_delta ) || ( smallest_delta > chunk_delta [ i ] ) ) { smallest_delta = chunk_delta [ i ] ; } NEXT_CHUNK : continue ; } subtract_delta = smallest_delta ; sample_count_f = ( ( ( float ) smallest_delta * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; hmp_mdi -> events [ hmp_mdi -> event_count - 1 ] . samples_to_next += sample_count ; hmp_mdi -> extra_info . approx_total_samples += sample_count ; } if ( ( hmp_mdi -> reverb = _WM_init_reverb ( _WM_SampleRate , _WM_reverb_room_width , _WM_reverb_room_length , _WM_reverb_listen_posx , _WM_reverb_listen_posy ) ) == NULL ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_MEM , \"to<S2SV_blank>init<S2SV_blank>reverb\" , 0 ) ; goto _hmp_end ; } hmp_mdi -> extra_info . current_sample = 0 ; hmp_mdi -> current_event = & hmp_mdi -> events [ 0 ] ; hmp_mdi -> samples_to_mix = 0 ; hmp_mdi -> note = NULL ; _WM_ResetToStart ( hmp_mdi ) ; _hmp_end : free ( hmp_chunk ) ; free ( chunk_length ) ; free ( chunk_delta ) ; free ( chunk_ofs ) ; free ( chunk_end ) ; if ( hmp_mdi -> reverb ) return ( hmp_mdi ) ; _WM_freeMDI ( hmp_mdi ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] + chunk_length [ i ] ; chunk_length [ i ] -= chunk_ofs <S2SV_ModStart> += 3 ; chunk_length [ i ] -= 3 ; <S2SV_ModStart> hmp_mdi , hmp_chunk [ i ] , chunk_length <S2SV_ModStart> ] = 1 ; chunk_length [ i ] -= 3 <S2SV_ModStart> += setup_ret ; chunk_length [ i ] -= setup_ret ; <S2SV_ModStart> ; if ( chunk_length [ i ] && <S2SV_ModStart> { do { if ( ! chunk_length [ i ] ) break ; <S2SV_ModStart> ] ++ ; chunk_length [ i ] -- ; <S2SV_ModStart> ) ; } if ( ! chunk_length [ i ] ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMP , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmp_end ; } <S2SV_ModStart> i ] ++ ; chunk_length [ i ] --\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9423\n\n```\nCWE-200 enum auth_stat gssrpc__svcauth_gss ( struct svc_req * rqst , struct rpc_msg * msg , bool_t * no_dispatch ) { enum auth_stat retstat ; XDR xdrs ; SVCAUTH * auth ; struct svc_rpc_gss_data * gd ; struct rpc_gss_cred * gc ; struct rpc_gss_init_res gr ; int call_stat , offset ; OM_uint32 min_stat ; log_debug ( \"in<S2SV_blank>svcauth_gss()\" ) ; rqst -> rq_xprt -> xp_verf = gssrpc__null_auth ; if ( rqst -> rq_xprt -> xp_auth == NULL || rqst -> rq_xprt -> xp_auth == & svc_auth_none ) { if ( ( auth = calloc ( sizeof ( * auth ) , 1 ) ) == NULL ) { fprintf ( stderr , \"svcauth_gss:<S2SV_blank>out_of_memory\\\\n\" ) ; return ( AUTH_FAILED ) ; } if ( ( gd = calloc ( sizeof ( * gd ) , 1 ) ) == NULL ) { fprintf ( stderr , \"svcauth_gss:<S2SV_blank>out_of_memory\\\\n\" ) ; return ( AUTH_FAILED ) ; } auth -> svc_ah_ops = & svc_auth_gss_ops ; SVCAUTH_PRIVATE ( auth ) = gd ; rqst -> rq_xprt -> xp_auth = auth ; } else gd = SVCAUTH_PRIVATE ( rqst -> rq_xprt -> xp_auth ) ; log_debug ( \"xp_auth=%p,<S2SV_blank>gd=%p\" , rqst -> rq_xprt -> xp_auth , gd ) ; if ( rqst -> rq_cred . oa_length <= 0 ) return ( AUTH_BADCRED ) ; gc = ( struct rpc_gss_cred * ) rqst -> rq_clntcred ; memset ( gc , 0 , sizeof ( * gc ) ) ; log_debug ( \"calling<S2SV_blank>xdrmem_create()\" ) ; log_debug ( \"oa_base=%p,<S2SV_blank>oa_length=%u\" , rqst -> rq_cred . oa_base , rqst -> rq_cred . oa_length ) ; xdrmem_create ( & xdrs , rqst -> rq_cred . oa_base , rqst -> rq_cred . oa_length , XDR_DECODE ) ; log_debug ( \"xdrmem_create()<S2SV_blank>returned\" ) ; if ( ! xdr_rpc_gss_cred ( & xdrs , gc ) ) { log_debug ( \"xdr_rpc_gss_cred()<S2SV_blank>failed\" ) ; XDR_DESTROY ( & xdrs ) ; return ( AUTH_BADCRED ) ; } XDR_DESTROY ( & xdrs ) ; retstat = AUTH_FAILED ; # define ret_freegc ( code ) do { retstat = code ; goto freegc ; } while ( 0 ) if ( gc -> gc_v != RPCSEC_GSS_VERSION ) ret_freegc ( AUTH_BADCRED ) ; if ( gc -> gc_svc != RPCSEC_GSS_SVC_NONE && gc -> gc_svc != RPCSEC_GSS_SVC_INTEGRITY && gc -> gc_svc != RPCSEC_GSS_SVC_PRIVACY ) ret_freegc ( AUTH_BADCRED ) ; if ( gd -> established ) { if ( gc -> gc_seq > MAXSEQ ) ret_freegc ( RPCSEC_GSS_CTXPROBLEM ) ; if ( ( offset = gd -> seqlast - gc -> gc_seq ) < 0 ) { gd -> seqlast = gc -> gc_seq ; offset = 0 - offset ; gd -> seqmask <<= offset ; offset = 0 ; } else if ( ( u_int ) offset >= gd -> win || ( gd -> seqmask & ( 1 << offset ) ) ) { * no_dispatch = 1 ; ret_freegc ( RPCSEC_GSS_CTXPROBLEM ) ; } gd -> seq = gc -> gc_seq ; gd -> seqmask |= ( 1 << offset ) ; } if ( gd -> established ) { rqst -> rq_clntname = ( char * ) gd -> client_name ; rqst -> rq_svccred = ( char * ) gd -> ctx ; } switch ( gc -> gc_proc ) { case RPCSEC_GSS_INIT : case RPCSEC_GSS_CONTINUE_INIT : if ( rqst -> rq_proc != NULLPROC ) ret_freegc ( AUTH_FAILED ) ; if ( ! svcauth_gss_acquire_cred ( ) ) ret_freegc ( AUTH_FAILED ) ; if ( ! svcauth_gss_accept_sec_context ( rqst , & gr ) ) ret_freegc ( AUTH_REJECTEDCRED ) ; if ( ! svcauth_gss_nextverf ( rqst , htonl ( gr . gr_win ) ) ) { gss_release_buffer ( & min_stat , & gr . gr_token ) ; <S2SV_StartBug> mem_free ( gr . gr_ctx . value , <S2SV_EndBug> sizeof ( gss_union_ctx_id_desc ) ) ; ret_freegc ( AUTH_FAILED ) ; } * no_dispatch = TRUE ; call_stat = svc_sendreply ( rqst -> rq_xprt , xdr_rpc_gss_init_res , ( caddr_t ) & gr ) ; gss_release_buffer ( & min_stat , & gr . gr_token ) ; <S2SV_StartBug> gss_release_buffer ( & min_stat , & gd -> checksum ) ; <S2SV_EndBug> mem_free ( gr . gr_ctx . value , sizeof ( gss_union_ctx_id_desc ) ) ; if ( ! call_stat ) ret_freegc ( AUTH_FAILED ) ; if ( gr . gr_major == GSS_S_COMPLETE ) gd -> established = TRUE ; break ; case RPCSEC_GSS_DATA : if ( ! svcauth_gss_validate ( rqst , gd , msg ) ) ret_freegc ( RPCSEC_GSS_CREDPROBLEM ) ; if ( ! svcauth_gss_nextverf ( rqst , htonl ( gc -> gc_seq ) ) ) ret_freegc ( AUTH_FAILED ) ; break ; case RPCSEC_GSS_DESTROY : if ( rqst -> rq_proc != NULLPROC ) ret_freegc ( AUTH_FAILED ) ; if ( ! svcauth_gss_validate ( rqst , gd , msg ) ) ret_freegc ( RPCSEC_GSS_CREDPROBLEM ) ; if ( ! svcauth_gss_nextverf ( rqst , htonl ( gc -> gc_seq ) ) ) ret_freegc ( AUTH_FAILED ) ; * no_dispatch = TRUE ; call_stat = svc_sendreply ( rqst -> rq_xprt , xdr_void , ( caddr_t ) NULL ) ; log_debug ( \"sendreply<S2SV_blank>in<S2SV_blank>destroy:<S2SV_blank>%d\" , call_stat ) ; if ( ! svcauth_gss_release_cred ( ) ) ret_freegc ( AUTH_FAILED ) ; SVCAUTH_DESTROY ( rqst -> rq_xprt -> xp_auth ) ; rqst -> rq_xprt -> xp_auth = & svc_auth_none ; break ; default : ret_freegc ( AUTH_REJECTEDCRED ) ; break ; } retstat = AUTH_OK ; freegc : xdr_free ( xdr_rpc_gss_cred , gc ) ; log_debug ( \"returning<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>svcauth_gss()\" , retstat ) ; return ( retstat ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gr_token ) ; <S2SV_ModEnd> ret_freegc ( AUTH_FAILED <S2SV_ModStart> gd -> checksum <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4300\n\n```\nCWE-264 static __inline__ int scm_check_creds ( struct ucred * creds ) { const struct cred * cred = current_cred ( ) ; kuid_t uid = make_kuid ( cred -> user_ns , creds -> uid ) ; kgid_t gid = make_kgid ( cred -> user_ns , creds -> gid ) ; if ( ! uid_valid ( uid ) || ! gid_valid ( gid ) ) return - EINVAL ; if ( ( creds -> pid == task_tgid_vnr ( current ) || <S2SV_StartBug> ns_capable ( current -> nsproxy -> pid_ns -> user_ns , CAP_SYS_ADMIN ) ) && <S2SV_EndBug> ( ( uid_eq ( uid , cred -> uid ) || uid_eq ( uid , cred -> euid ) || uid_eq ( uid , cred -> suid ) ) || nsown_capable ( CAP_SETUID ) ) && ( ( gid_eq ( gid , cred -> gid ) || gid_eq ( gid , cred -> egid ) || gid_eq ( gid , cred -> sgid ) ) || nsown_capable ( CAP_SETGID ) ) ) { return 0 ; } return - EPERM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> || ns_capable ( task_active_pid_ns ( current ) <S2SV_ModEnd> -> user_ns ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2127\n\n```\nCWE-119 void pid_ns_release_proc ( struct pid_namespace * ns ) { <S2SV_StartBug> mntput ( ns -> proc_mnt ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ns ) { kern_unmount <S2SV_ModEnd> ( ns ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13000\n\n```\nCWE-125 u_int ieee802_15_4_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int caplen = h -> caplen ; u_int hdrlen ; uint16_t fc ; uint8_t seq ; uint16_t panid = 0 ; if ( caplen < 3 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return caplen ; } hdrlen = 3 ; fc = EXTRACT_LE_16BITS ( p ) ; seq = EXTRACT_LE_8BITS ( p + 2 ) ; p += 3 ; caplen -= 3 ; ND_PRINT ( ( ndo , \"IEEE<S2SV_blank>802.15.4<S2SV_blank>%s<S2SV_blank>packet<S2SV_blank>\" , ftypes [ FC_FRAME_TYPE ( fc ) ] ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"seq<S2SV_blank>%02x<S2SV_blank>\" , seq ) ) ; switch ( FC_DEST_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( fc & FC_PAN_ID_COMPRESSION ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>destination<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return hdrlen ; case FC_ADDRESSING_MODE_SHORT : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p + 2 ) ) ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; break ; case FC_ADDRESSING_MODE_LONG : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_StartBug> ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p + 2 ) ) ) ; <S2SV_EndBug> p += 8 ; caplen -= 8 ; hdrlen += 8 ; break ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<<S2SV_blank>\" ) ) ; switch ( FC_SRC_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>source<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return 0 ; case FC_ADDRESSING_MODE_SHORT : if ( ! ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p ) ) ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; break ; case FC_ADDRESSING_MODE_LONG : if ( ! ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; p += 8 ; caplen -= 8 ; hdrlen += 8 ; break ; } if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , caplen ) ; return hdrlen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ndo , p <S2SV_ModEnd> ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 static inline int check_sticky ( struct inode * dir , struct inode * inode ) { kuid_t fsuid = current_fsuid ( ) ; if ( ! ( dir -> i_mode & S_ISVTX ) ) return 0 ; if ( uid_eq ( inode -> i_uid , fsuid ) ) return 0 ; if ( uid_eq ( dir -> i_uid , fsuid ) ) return 0 ; <S2SV_StartBug> return ! inode_capable ( inode , CAP_FOWNER ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return ! capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 static int sgi_timer_set ( struct k_itimer * timr , int flags , struct itimerspec * new_setting , struct itimerspec * old_setting ) { unsigned long when , period , irqflags ; int err = 0 ; cnodeid_t nodeid ; struct mmtimer * base ; struct rb_node * n ; if ( old_setting ) sgi_timer_get ( timr , old_setting ) ; sgi_timer_del ( timr ) ; <S2SV_StartBug> when = timespec_to_ns ( new_setting -> it_value ) ; <S2SV_EndBug> <S2SV_StartBug> period = timespec_to_ns ( new_setting -> it_interval ) ; <S2SV_EndBug> if ( when == 0 ) return 0 ; base = kmalloc ( sizeof ( struct mmtimer ) , GFP_KERNEL ) ; if ( base == NULL ) return - ENOMEM ; if ( flags & TIMER_ABSTIME ) { struct timespec n ; unsigned long now ; getnstimeofday ( & n ) ; <S2SV_StartBug> now = timespec_to_ns ( n ) ; <S2SV_EndBug> if ( when > now ) when -= now ; else when = 0 ; } when = ( when + sgi_clock_period - 1 ) / sgi_clock_period + rtc_time ( ) ; period = ( period + sgi_clock_period - 1 ) / sgi_clock_period ; preempt_disable ( ) ; nodeid = cpu_to_node ( smp_processor_id ( ) ) ; spin_lock_irqsave ( & timers [ nodeid ] . lock , irqflags ) ; base -> timer = timr ; base -> cpu = smp_processor_id ( ) ; timr -> it . mmtimer . clock = TIMER_SET ; timr -> it . mmtimer . node = nodeid ; timr -> it . mmtimer . incr = period ; timr -> it . mmtimer . expires = when ; n = timers [ nodeid ] . next ; mmtimer_add_list ( base ) ; if ( timers [ nodeid ] . next == n ) { spin_unlock_irqrestore ( & timers [ nodeid ] . lock , irqflags ) ; preempt_enable ( ) ; return err ; } if ( n ) mmtimer_disable_int ( cnodeid_to_nasid ( nodeid ) , COMPARATOR ) ; mmtimer_set_next_timer ( nodeid ) ; spin_unlock_irqrestore ( & timers [ nodeid ] . lock , irqflags ) ; preempt_enable ( ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = timespec_to_ns ( & <S2SV_ModStart> = timespec_to_ns ( & <S2SV_ModStart> = timespec_to_ns ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 vpx_codec_err_t vpx_svc_encode ( SvcContext * svc_ctx , vpx_codec_ctx_t * codec_ctx , struct vpx_image * rawimg , vpx_codec_pts_t pts , int64_t duration , int deadline ) { vpx_codec_err_t res ; vpx_codec_iter_t iter ; const vpx_codec_cx_pkt_t * cx_pkt ; <S2SV_StartBug> struct LayerData * cx_layer_list = NULL ; <S2SV_EndBug> struct LayerData * layer_data ; struct Superframe superframe ; SvcInternal * const si = get_svc_internal ( svc_ctx ) ; if ( svc_ctx == NULL || codec_ctx == NULL || si == NULL ) { return VPX_CODEC_INVALID_PARAM ; } <S2SV_StartBug> memset ( & superframe , 0 , sizeof ( superframe ) ) ; <S2SV_EndBug> svc_log_reset ( svc_ctx ) ; si -> rc_stats_buf_used = 0 ; si -> layers = svc_ctx -> spatial_layers ; if ( si -> frame_within_gop >= si -> kf_dist || si -> encode_frame_count == 0 ) { si -> frame_within_gop = 0 ; } si -> is_keyframe = ( si -> frame_within_gop == 0 ) ; si -> frame_size = 0 ; if ( rawimg != NULL ) { svc_log ( svc_ctx , SVC_LOG_DEBUG , \"vpx_svc_encode<S2SV_blank><S2SV_blank>layers:<S2SV_blank>%d,<S2SV_blank>frame_count:<S2SV_blank>%d,<S2SV_blank>\" \"frame_within_gop:<S2SV_blank>%d\\\\n\" , si -> layers , si -> encode_frame_count , si -> frame_within_gop ) ; } for ( si -> layer = 0 ; si -> layer < si -> layers ; ++ si -> layer ) { if ( svc_ctx -> encoding_mode == ALT_INTER_LAYER_PREDICTION_IP && si -> is_keyframe && ( si -> layer == 1 || si -> layer == 3 ) ) { svc_log ( svc_ctx , SVC_LOG_DEBUG , \"Skip<S2SV_blank>encoding<S2SV_blank>layer<S2SV_blank>%d\\\\n\" , si -> layer ) ; continue ; } if ( rawimg != NULL ) { calculate_enc_frame_flags ( svc_ctx ) ; set_svc_parameters ( svc_ctx , codec_ctx ) ; } res = vpx_codec_encode ( codec_ctx , rawimg , pts , ( uint32_t ) duration , si -> enc_frame_flags , deadline ) ; if ( res != VPX_CODEC_OK ) { return res ; } iter = NULL ; while ( ( cx_pkt = vpx_codec_get_cx_data ( codec_ctx , & iter ) ) ) { switch ( cx_pkt -> kind ) { <S2SV_StartBug> case VPX_CODEC_CX_FRAME_PKT : { <S2SV_EndBug> const uint32_t frame_pkt_size = ( uint32_t ) ( cx_pkt -> data . frame . sz ) ; <S2SV_StartBug> si -> bytes_sum [ si -> layer ] += frame_pkt_size ; <S2SV_EndBug> svc_log ( svc_ctx , SVC_LOG_DEBUG , \"SVC<S2SV_blank>frame:<S2SV_blank>%d,<S2SV_blank>layer:<S2SV_blank>%d,<S2SV_blank>size:<S2SV_blank>%u\\\\n\" , si -> encode_frame_count , si -> layer , frame_pkt_size ) ; layer_data = ld_create ( cx_pkt -> data . frame . buf , ( size_t ) frame_pkt_size ) ; if ( layer_data == NULL ) { svc_log ( svc_ctx , SVC_LOG_ERROR , \"Error<S2SV_blank>allocating<S2SV_blank>LayerData\\\\n\" ) ; return VPX_CODEC_OK ; } <S2SV_StartBug> ld_list_add ( & cx_layer_list , layer_data ) ; <S2SV_EndBug> superframe . sizes [ superframe . count ++ ] = frame_pkt_size ; superframe . magnitude |= frame_pkt_size ; break ; } case VPX_CODEC_PSNR_PKT : { int i ; svc_log ( svc_ctx , SVC_LOG_DEBUG , \"SVC<S2SV_blank>frame:<S2SV_blank>%d,<S2SV_blank>layer:<S2SV_blank>%d,<S2SV_blank>PSNR(Total/Y/U/V):<S2SV_blank>\" \"%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank>\\\\n\" , si -> encode_frame_count , si -> layer , cx_pkt -> data . psnr . psnr [ 0 ] , cx_pkt -> data . psnr . psnr [ 1 ] , cx_pkt -> data . psnr . psnr [ 2 ] , cx_pkt -> data . psnr . psnr [ 3 ] ) ; svc_log ( svc_ctx , SVC_LOG_DEBUG , \"SVC<S2SV_blank>frame:<S2SV_blank>%d,<S2SV_blank>layer:<S2SV_blank>%d,<S2SV_blank>SSE(Total/Y/U/V):<S2SV_blank>\" \"%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank>\\\\n\" , si -> encode_frame_count , si -> layer , cx_pkt -> data . psnr . sse [ 0 ] , cx_pkt -> data . psnr . sse [ 1 ] , cx_pkt -> data . psnr . sse [ 2 ] , cx_pkt -> data . psnr . sse [ 3 ] ) ; for ( i = 0 ; i < COMPONENTS ; i ++ ) { si -> psnr_sum [ si -> layer ] [ i ] += cx_pkt -> data . psnr . psnr [ i ] ; si -> sse_sum [ si -> layer ] [ i ] += cx_pkt -> data . psnr . sse [ i ] ; } break ; } case VPX_CODEC_STATS_PKT : { size_t new_size = si -> rc_stats_buf_used + cx_pkt -> data . twopass_stats . sz ; if ( new_size > si -> rc_stats_buf_size ) { char * p = ( char * ) realloc ( si -> rc_stats_buf , new_size ) ; if ( p == NULL ) { svc_log ( svc_ctx , SVC_LOG_ERROR , \"Error<S2SV_blank>allocating<S2SV_blank>stats<S2SV_blank>buf\\\\n\" ) ; break ; } si -> rc_stats_buf = p ; si -> rc_stats_buf_size = new_size ; } memcpy ( si -> rc_stats_buf + si -> rc_stats_buf_used , cx_pkt -> data . twopass_stats . buf , cx_pkt -> data . twopass_stats . sz ) ; si -> rc_stats_buf_used += cx_pkt -> data . twopass_stats . sz ; break ; } default : { break ; } } } if ( rawimg == NULL ) { break ; } } if ( codec_ctx -> config . enc -> g_pass != VPX_RC_FIRST_PASS ) { sf_create_index ( & superframe ) ; layer_data = ld_create ( superframe . buffer , superframe . index_size ) ; ld_list_add ( & cx_layer_list , layer_data ) ; si -> frame_size = ld_list_get_buffer_size ( cx_layer_list ) ; if ( si -> frame_size > 0 ) { if ( si -> frame_size > si -> buffer_size ) { free ( si -> buffer ) ; si -> buffer = malloc ( si -> frame_size ) ; if ( si -> buffer == NULL ) { ld_list_free ( cx_layer_list ) ; return VPX_CODEC_MEM_ERROR ; } si -> buffer_size = si -> frame_size ; } ld_list_copy_to_buffer ( cx_layer_list , ( uint8_t * ) si -> buffer ) ; ld_list_free ( cx_layer_list ) ; svc_log ( svc_ctx , SVC_LOG_DEBUG , \"SVC<S2SV_blank>frame:<S2SV_blank>%d,<S2SV_blank>kf:<S2SV_blank>%d,<S2SV_blank>size:<S2SV_blank>%d,<S2SV_blank>\" \"pts:<S2SV_blank>%d\\\\n\" , si -> encode_frame_count , si -> is_keyframe , ( int ) si -> frame_size , ( int ) pts ) ; } } ++ si -> frame_within_gop ; ++ si -> encode_frame_count ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cx_pkt ; SvcInternal_t <S2SV_ModEnd> * const si <S2SV_ModStart> VPX_CODEC_INVALID_PARAM ; } svc_log_reset ( svc_ctx ) ; res = vpx_codec_encode ( codec_ctx , rawimg , pts , ( uint32_t ) duration <S2SV_ModEnd> , 0 , <S2SV_ModStart> , 0 , <S2SV_ModEnd> deadline ) ; <S2SV_ModStart> kind ) { # if VPX_ENCODER_ABI_VERSION > ( 5 + VPX_CODEC_ABI_VERSION ) # if CONFIG_SPATIAL_SVC case VPX_CODEC_SPATIAL_SVC_LAYER_PSNR : { int i ; for ( i = 0 ; i < svc_ctx -> spatial_layers ; ++ i ) { int j ; svc_log ( svc_ctx , SVC_LOG_DEBUG , \"SVC<S2SV_blank>frame:<S2SV_blank>%d,<S2SV_blank>layer:<S2SV_blank>%d,<S2SV_blank>PSNR(Total/Y/U/V):<S2SV_blank>\" \"%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank>\\\\n\" , si -> psnr_pkt_received , i , cx_pkt -> data . layer_psnr [ i ] . psnr [ 0 ] , cx_pkt -> data . layer_psnr [ i ] . psnr [ 1 ] , cx_pkt -> data . layer_psnr [ i ] . psnr [ 2 ] , cx_pkt -> data . layer_psnr [ i ] . psnr [ 3 ] ) ; svc_log ( svc_ctx , SVC_LOG_DEBUG , \"SVC<S2SV_blank>frame:<S2SV_blank>%d,<S2SV_blank>layer:<S2SV_blank>%d,<S2SV_blank>SSE(Total/Y/U/V):<S2SV_blank>\" \"%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank><S2SV_blank>%2.3f<S2SV_blank>\\\\n\" , si -> psnr_pkt_received , i , cx_pkt -> data . layer_psnr [ i ] . sse [ 0 ] , cx_pkt -> data . layer_psnr [ i ] . sse [ 1 ] , cx_pkt -> data . layer_psnr [ i ] . sse [ 2 ] , cx_pkt -> data . layer_psnr [ i ] . sse [ 3 ] ) ; for ( j = 0 ; j < COMPONENTS ; ++ j ) { si -> psnr_sum [ i ] [ j ] += cx_pkt -> data . layer_psnr [ i ] . psnr [ j ] ; si -> sse_sum [ i ] [ j ] += cx_pkt -> data . layer_psnr [ i ] . sse [ j ] ; } } ++ si -> psnr_pkt_received ; break ; } case VPX_CODEC_SPATIAL_SVC_LAYER_SIZES : { int i ; for ( i = 0 ; i < svc_ctx -> spatial_layers ; ++ i ) <S2SV_ModEnd> si -> bytes_sum <S2SV_ModStart> -> bytes_sum [ i ] += cx_pkt -> data . layer_sizes [ i ] ; break ; } # endif # endif default : { break ; } } } <S2SV_ModEnd> return VPX_CODEC_OK ; <S2SV_ModStart> VPX_CODEC_OK ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5329\n\n```\nCWE-399 long video_usercopy ( struct file * file , unsigned int cmd , unsigned long arg , v4l2_kioctl func ) { char sbuf [ 128 ] ; void * mbuf = NULL ; <S2SV_StartBug> void * parg = NULL ; <S2SV_EndBug> long err = - EINVAL ; <S2SV_StartBug> int is_ext_ctrl ; <S2SV_EndBug> size_t ctrls_size = 0 ; void __user * user_ptr = NULL ; is_ext_ctrl = ( cmd == VIDIOC_S_EXT_CTRLS || cmd == VIDIOC_G_EXT_CTRLS || cmd == VIDIOC_TRY_EXT_CTRLS ) ; switch ( _IOC_DIR ( cmd ) ) { <S2SV_StartBug> case _IOC_NONE : <S2SV_EndBug> parg = NULL ; break ; case _IOC_READ : <S2SV_StartBug> case _IOC_WRITE : <S2SV_EndBug> case ( _IOC_WRITE | _IOC_READ ) : <S2SV_StartBug> if ( _IOC_SIZE ( cmd ) <= sizeof ( sbuf ) ) { <S2SV_EndBug> parg = sbuf ; } else { mbuf = kmalloc ( _IOC_SIZE ( cmd ) , GFP_KERNEL ) ; if ( NULL == mbuf ) return - ENOMEM ; parg = mbuf ; } err = - EFAULT ; if ( _IOC_DIR ( cmd ) & _IOC_WRITE ) if ( copy_from_user ( parg , ( void __user * ) arg , _IOC_SIZE ( cmd ) ) ) goto out ; break ; } if ( is_ext_ctrl ) { struct v4l2_ext_controls * p = parg ; p -> error_idx = p -> count ; user_ptr = ( void __user * ) p -> controls ; if ( p -> count ) { ctrls_size = sizeof ( struct v4l2_ext_control ) * p -> count ; mbuf = kmalloc ( ctrls_size , GFP_KERNEL ) ; err = - ENOMEM ; if ( NULL == mbuf ) goto out_ext_ctrl ; err = - EFAULT ; if ( copy_from_user ( mbuf , user_ptr , ctrls_size ) ) goto out_ext_ctrl ; p -> controls = mbuf ; } } err = func ( file , cmd , parg ) ; if ( err == - ENOIOCTLCMD ) err = - EINVAL ; if ( is_ext_ctrl ) { struct v4l2_ext_controls * p = parg ; p -> controls = ( void * ) user_ptr ; if ( p -> count && err == 0 && copy_to_user ( user_ptr , mbuf , ctrls_size ) ) err = - EFAULT ; goto out_ext_ctrl ; } if ( err < 0 ) goto out ; out_ext_ctrl : switch ( _IOC_DIR ( cmd ) ) { case _IOC_READ : case ( _IOC_WRITE | _IOC_READ ) : if ( copy_to_user ( ( void __user * ) arg , parg , _IOC_SIZE ( cmd ) ) ) err = - EFAULT ; break ; } out : kfree ( mbuf ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * parg = ( void * ) arg ; long err = - EINVAL ; bool has_array_args ; size_t array_size = 0 ; void __user * user_ptr = NULL ; void * * kernel_ptr = NULL ; if ( _IOC_DIR ( cmd ) != _IOC_NONE ) { if ( _IOC_SIZE ( cmd ) <= sizeof ( sbuf ) ) { parg = sbuf ; } else { mbuf = kmalloc ( _IOC_SIZE ( cmd ) , GFP_KERNEL ) ; if ( NULL == mbuf ) return - ENOMEM ; parg = mbuf ; } err = - EFAULT ; if ( _IOC_DIR ( cmd ) & _IOC_WRITE ) { unsigned long n = cmd_input_size ( cmd ) ; if ( copy_from_user ( parg , ( void __user * ) arg , n ) ) goto out ; if ( n < _IOC_SIZE ( cmd ) ) memset ( ( u8 * ) parg + n , 0 , _IOC_SIZE ( cmd ) - n ) ; } else { memset ( parg , 0 , _IOC_SIZE ( cmd ) ) ; } } err = check_array_args ( cmd , parg , & array_size , & user_ptr , & kernel_ptr ) ; if ( err < 0 ) goto out ; has_array_args = err ; if ( has_array_args ) { mbuf = kmalloc ( array_size , GFP_KERNEL ) ; err = - ENOMEM ; if ( NULL == mbuf ) goto out_array_args ; err = - EFAULT ; if ( copy_from_user ( mbuf , user_ptr , array_size ) ) goto out_array_args ; * kernel_ptr = mbuf ; } err = func ( file , cmd , parg ) ; if ( err == - ENOIOCTLCMD ) <S2SV_ModEnd> err = - <S2SV_ModStart> - EINVAL ; if ( has_array_args ) { * kernel_ptr = user_ptr ; if ( copy_to_user ( user_ptr , mbuf , array_size ) ) err = - EFAULT ; goto out_array_args ; } if ( err < 0 ) goto out ; out_array_args : <S2SV_ModEnd> switch ( _IOC_DIR <S2SV_ModStart> ) ) { <S2SV_ModEnd> case _IOC_READ : <S2SV_ModStart> _IOC_READ : case <S2SV_ModEnd> ( _IOC_WRITE | <S2SV_ModStart> : if ( <S2SV_ModEnd> copy_to_user ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 static int DecodeNumberField ( int len , char * str , int fmask , int * tmask , struct tm * tm , fsec_t * fsec , int * is2digits ) { char * cp ; if ( ( cp = strchr ( str , '.' ) ) != NULL ) { # ifdef HAVE_INT64_TIMESTAMP <S2SV_StartBug> char fstr [ MAXDATELEN + 1 ] ; <S2SV_EndBug> strcpy ( fstr , ( cp + 1 ) ) ; strcpy ( fstr + strlen ( fstr ) , \"000000\" ) ; * ( fstr + 6 ) = '\\\\0' ; * fsec = strtol ( fstr , NULL , 10 ) ; # else * fsec = strtod ( cp , NULL ) ; # endif * cp = '\\\\0' ; len = strlen ( str ) ; } else if ( ( fmask & DTK_DATE_M ) != DTK_DATE_M ) { if ( len == 8 ) { * tmask = DTK_DATE_M ; tm -> tm_mday = atoi ( str + 6 ) ; * ( str + 6 ) = '\\\\0' ; tm -> tm_mon = atoi ( str + 4 ) ; * ( str + 4 ) = '\\\\0' ; tm -> tm_year = atoi ( str + 0 ) ; return DTK_DATE ; } else if ( len == 6 ) { * tmask = DTK_DATE_M ; tm -> tm_mday = atoi ( str + 4 ) ; * ( str + 4 ) = '\\\\0' ; tm -> tm_mon = atoi ( str + 2 ) ; * ( str + 2 ) = '\\\\0' ; tm -> tm_year = atoi ( str + 0 ) ; * is2digits = TRUE ; return DTK_DATE ; } else if ( len == 5 ) { * tmask = DTK_DATE_M ; tm -> tm_mday = atoi ( str + 2 ) ; * ( str + 2 ) = '\\\\0' ; tm -> tm_mon = 1 ; tm -> tm_year = atoi ( str + 0 ) ; * is2digits = TRUE ; return DTK_DATE ; } } if ( ( fmask & DTK_TIME_M ) != DTK_TIME_M ) { if ( len == 6 ) { * tmask = DTK_TIME_M ; tm -> tm_sec = atoi ( str + 4 ) ; * ( str + 4 ) = '\\\\0' ; tm -> tm_min = atoi ( str + 2 ) ; * ( str + 2 ) = '\\\\0' ; tm -> tm_hour = atoi ( str + 0 ) ; return DTK_TIME ; } else if ( len == 4 ) { * tmask = DTK_TIME_M ; tm -> tm_sec = 0 ; tm -> tm_min = atoi ( str + 2 ) ; * ( str + 2 ) = '\\\\0' ; tm -> tm_hour = atoi ( str + 0 ) ; return DTK_TIME ; } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char fstr [ 7 ] ; int i ; cp ++ ; for ( i = 0 ; i < 6 ; i ++ ) fstr [ i ] = * cp != '\\\\0' ? * cp ++ : '0' ; fstr [ i ] <S2SV_ModEnd> = '\\\\0' ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10251\n\n```\nCWE-190 static int jpc_pi_nextcprl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; uint_fast32_t trx0 ; uint_fast32_t try0 ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> prgvolfirst = 0 ; } for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < JAS_CAST ( int , pchg -> compnoend ) && pi -> compno < pi -> numcomps ; ++ pi -> compno , ++ pi -> picomp ) { pirlvl = pi -> picomp -> pirlvls ; <S2SV_StartBug> pi -> xstep = pi -> picomp -> hsamp * ( 1 << ( pirlvl -> prcwidthexpn + <S2SV_EndBug> pi -> picomp -> numrlvls - 1 ) ) ; <S2SV_StartBug> pi -> ystep = pi -> picomp -> vsamp * ( 1 << ( pirlvl -> prcheightexpn + <S2SV_EndBug> pi -> picomp -> numrlvls - 1 ) ) ; for ( rlvlno = 1 , pirlvl = & pi -> picomp -> pirlvls [ 1 ] ; rlvlno < pi -> picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { <S2SV_StartBug> pi -> xstep = JAS_MIN ( pi -> xstep , pi -> picomp -> hsamp * ( 1 << <S2SV_EndBug> ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls - rlvlno - 1 ) ) ) ; <S2SV_StartBug> pi -> ystep = JAS_MIN ( pi -> ystep , pi -> picomp -> vsamp * ( 1 << <S2SV_EndBug> ( pirlvl -> prcheightexpn + pi -> picomp -> numrlvls - rlvlno - 1 ) ) ) ; } for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> rlvlno = pchg -> rlvlnostart , pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; pi -> rlvlno < pi -> picomp -> numrlvls && pi -> rlvlno < pchg -> rlvlnoend ; ++ pi -> rlvlno , ++ pi -> pirlvl ) { if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( 1 << rpx ) ) ) || ! ( pi -> x % ( pi -> picomp -> hsamp << rpx ) ) ) && ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( 1 << rpy ) ) ) || ! ( pi -> y % ( pi -> picomp -> vsamp << rpy ) ) ) ) { prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> -> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> -> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14397\n\n```\nCWE-476 static void <S2SV_StartBug> sraSpanInsertAfter ( sraSpan * newspan , sraSpan * after ) { <S2SV_EndBug> newspan -> _next = after -> _next ; newspan -> _prev = after ; after -> _next -> _prev = newspan ; after -> _next = newspan ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , sraSpan * after ) { if ( newspan && <S2SV_ModStart> newspan ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 void cJSON_ReplaceItemInArray ( cJSON * array , int which , cJSON * newitem ) { cJSON * c = array -> child ; <S2SV_StartBug> while ( c && which > 0 ) { <S2SV_EndBug> <S2SV_StartBug> c = c -> next ; <S2SV_EndBug> -- which ; } if ( ! c ) return ; newitem -> next = c -> next ; newitem -> prev = c -> prev ; if ( newitem -> next ) newitem -> next -> prev = newitem ; if ( c == array -> child ) array -> child = newitem ; else newitem -> prev -> next = newitem ; c -> next = c -> prev = 0 ; cJSON_Delete ( c ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> > 0 ) <S2SV_ModEnd> c = c <S2SV_ModStart> c -> next , which -- ; <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5366\n\n```\nCWE-399 int udp_recvmsg ( struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_in * , sin , msg -> msg_name ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; int is_udplite = IS_UDPLITE ( sk ) ; bool slow ; if ( flags & MSG_ERRQUEUE ) return ip_recv_error ( sk , msg , len , addr_len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { if ( udp_lib_checksum_complete ( skb ) ) goto csum_copy_err ; } if ( skb_csum_unnecessary ( skb ) ) err = skb_copy_datagram_msg ( skb , sizeof ( struct udphdr ) , msg , copied ) ; else { err = skb_copy_and_csum_datagram_msg ( skb , sizeof ( struct udphdr ) , msg ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udp_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_port = udp_hdr ( skb ) -> source ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; * addr_len = sizeof ( * sin ) ; } if ( inet -> cmsg_flags ) ip_cmsg_recv_offset ( msg , skb , sizeof ( struct udphdr ) ) ; err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } unlock_sock_fast ( sk , slow ) ; <S2SV_StartBug> if ( noblock ) <S2SV_EndBug> return - EAGAIN ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> slow ) ; cond_resched ( ) <S2SV_ModEnd> ; msg ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2385\n\n```\nCWE-119 int encode_msg ( struct sip_msg * msg , char * payload , int len ) { int i , j , k , u , request ; unsigned short int h ; struct hdr_field * hf ; struct msg_start * ms ; struct sip_uri miuri ; char * myerror = NULL ; ptrdiff_t diff ; if ( len < MAX_ENCODED_MSG + MAX_MESSAGE_LEN ) return - 1 ; if ( parse_headers ( msg , HDR_EOH_F , 0 ) < 0 ) { myerror = \"in<S2SV_blank>parse_headers\" ; goto error ; } memset ( payload , 0 , len ) ; ms = & msg -> first_line ; if ( ms -> type == SIP_REQUEST ) request = 1 ; else if ( ms -> type == SIP_REPLY ) request = 0 ; else { myerror = \"message<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>request<S2SV_blank>nor<S2SV_blank>response\" ; goto error ; } if ( request ) { for ( h = 0 ; h < 32 ; j = ( 0x01 << h ) , h ++ ) if ( j & ms -> u . request . method_value ) break ; } else { h = ( unsigned short ) ( ms -> u . reply . statuscode ) ; } if ( h == 32 ) { myerror = \"unknown<S2SV_blank>message<S2SV_blank>type\\\\n\" ; goto error ; } h = htons ( h ) ; memcpy ( payload , & h , 2 ) ; h = htons ( ( unsigned short int ) msg -> len ) ; memcpy ( & payload [ MSG_LEN_IDX ] , & h , 2 ) ; if ( 0 > ( diff = ( get_body ( msg ) - ( msg -> buf ) ) ) ) { myerror = \"body<S2SV_blank>starts<S2SV_blank>before<S2SV_blank>the<S2SV_blank>message<S2SV_blank>(uh<S2SV_blank>?)\" ; goto error ; } else h = htons ( ( unsigned short int ) diff ) ; memcpy ( payload + CONTENT_IDX , & h , 2 ) ; payload [ METHOD_CODE_IDX ] = ( unsigned char ) ( request ? ( ms -> u . request . method . s - msg -> buf ) : ( ms -> u . reply . status . s - msg -> buf ) ) ; payload [ METHOD_CODE_IDX + 1 ] = ( unsigned char ) ( request ? ( ms -> u . request . method . len ) : ( ms -> u . reply . status . len ) ) ; payload [ URI_REASON_IDX ] = ( unsigned char ) ( request ? ( ms -> u . request . uri . s - msg -> buf ) : ( ms -> u . reply . reason . s - msg -> buf ) ) ; payload [ URI_REASON_IDX + 1 ] = ( unsigned char ) ( request ? ( ms -> u . request . uri . len ) : ( ms -> u . reply . reason . len ) ) ; payload [ VERSION_IDX ] = ( unsigned char ) ( request ? ( ms -> u . request . version . s - msg -> buf ) : ( ms -> u . reply . version . s - msg -> buf ) ) ; if ( request ) { if ( parse_uri ( ms -> u . request . uri . s , ms -> u . request . uri . len , & miuri ) < 0 ) { LM_ERR ( \"<%.*s>\\\\n\" , ms -> u . request . uri . len , ms -> u . request . uri . s ) ; myerror = \"while<S2SV_blank>parsing<S2SV_blank>the<S2SV_blank>R-URI\" ; goto error ; } if ( 0 > ( j = encode_uri2 ( msg -> buf , ms -> u . request . method . s - msg -> buf + ms -> len , ms -> u . request . uri , & miuri , ( unsigned char * ) & payload [ REQUEST_URI_IDX + 1 ] ) ) ) { myerror = \"ENCODE_MSG:<S2SV_blank>ERROR<S2SV_blank>while<S2SV_blank>encoding<S2SV_blank>the<S2SV_blank>R-URI\" ; goto error ; } payload [ REQUEST_URI_IDX ] = ( unsigned char ) j ; k = REQUEST_URI_IDX + 1 + j ; } else k = REQUEST_URI_IDX ; u = k ; k ++ ; for ( i = 0 , hf = msg -> headers ; hf ; hf = hf -> next , i ++ ) ; i ++ ; j = k + 3 * i ; for ( i = 0 , hf = msg -> headers ; hf ; hf = hf -> next , k += 3 ) { payload [ k ] = ( unsigned char ) ( hf -> type & 0xFF ) ; h = htons ( j ) ; memcpy ( & payload [ k + 1 ] , & h , 2 ) ; if ( 0 > ( i = encode_header ( msg , hf , ( unsigned char * ) ( payload + j ) , MAX_ENCODED_MSG + MAX_MESSAGE_LEN - j ) ) ) { LM_ERR ( \"encoding<S2SV_blank>header<S2SV_blank>%.*s\\\\n\" , hf -> name . len , hf -> name . s ) ; goto error ; k -= 3 ; continue ; } j += ( unsigned short int ) i ; } payload [ u ] = ( unsigned char ) ( ( k - u - 1 ) / 3 ) ; j = htons ( j ) ; memcpy ( & payload [ k + 1 ] , & j , 2 ) ; k += 3 ; j = ntohs ( j ) ; <S2SV_StartBug> memcpy ( & payload [ j ] , msg -> buf , msg -> len ) ; <S2SV_EndBug> LM_DBG ( \"msglen<S2SV_blank>=<S2SV_blank>%d,msg<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>%d\\\\n\" , msg -> len , j ) ; j = htons ( j ) ; memcpy ( & payload [ MSG_START_IDX ] , & j , 2 ) ; return GET_PAY_SIZE ( payload ) ; error : LM_ERR ( \"%s\\\\n\" , myerror ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> j ) ; if ( len < j + msg -> len + 1 ) { LM_ERR ( \"not<S2SV_blank>enough<S2SV_blank>space<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>sip<S2SV_blank>message\\\\n\" ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 static void gre_print_0 ( netdissect_options * ndo , const u_char * bp , u_int length ) { u_int len = length ; uint16_t flags , prot ; flags = EXTRACT_16BITS ( bp ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( gre_flag_values , \"none\" , flags ) ) ) ; len -= 2 ; bp += 2 ; ND_TCHECK2 ( * bp , 2 ) ; if ( len < 2 ) goto trunc ; prot = EXTRACT_16BITS ( bp ) ; len -= 2 ; bp += 2 ; if ( ( flags & GRE_CP ) | ( flags & GRE_RP ) ) { ND_TCHECK2 ( * bp , 2 ) ; if ( len < 2 ) goto trunc ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>sum<S2SV_blank>0x%x\" , EXTRACT_16BITS ( bp ) ) ) ; bp += 2 ; len -= 2 ; ND_TCHECK2 ( * bp , 2 ) ; if ( len < 2 ) goto trunc ; ND_PRINT ( ( ndo , \",<S2SV_blank>off<S2SV_blank>0x%x\" , EXTRACT_16BITS ( bp ) ) ) ; bp += 2 ; len -= 2 ; } if ( flags & GRE_KP ) { ND_TCHECK2 ( * bp , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \",<S2SV_blank>key=0x%x\" , EXTRACT_32BITS ( bp ) ) ) ; bp += 4 ; len -= 4 ; } if ( flags & GRE_SP ) { ND_TCHECK2 ( * bp , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \",<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( bp ) ) ) ; bp += 4 ; len -= 4 ; } if ( flags & GRE_RP ) { for ( ; ; ) { uint16_t af ; uint8_t sreoff ; uint8_t srelen ; ND_TCHECK2 ( * bp , 4 ) ; if ( len < 4 ) goto trunc ; af = EXTRACT_16BITS ( bp ) ; sreoff = * ( bp + 2 ) ; srelen = * ( bp + 3 ) ; bp += 4 ; len -= 4 ; if ( af == 0 && srelen == 0 ) break ; if ( ! gre_sre_print ( ndo , af , sreoff , srelen , bp , len ) ) goto trunc ; if ( len < srelen ) goto trunc ; bp += srelen ; len -= srelen ; } } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>proto<S2SV_blank>%s<S2SV_blank>(0x%04x)\" , tok2str ( ethertype_values , \"unknown\" , prot ) , prot ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; if ( ndo -> ndo_vflag < 1 ) ND_PRINT ( ( ndo , \":<S2SV_blank>\" ) ) ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; switch ( prot ) { case ETHERTYPE_IP : ip_print ( ndo , bp , len ) ; break ; case ETHERTYPE_IPV6 : ip6_print ( ndo , bp , len ) ; break ; case ETHERTYPE_MPLS : mpls_print ( ndo , bp , len ) ; break ; case ETHERTYPE_IPX : ipx_print ( ndo , bp , len ) ; break ; case ETHERTYPE_ATALK : atalk_print ( ndo , bp , len ) ; break ; case ETHERTYPE_GRE_ISO : <S2SV_StartBug> isoclns_print ( ndo , bp , len , ndo -> ndo_snapend - bp ) ; <S2SV_EndBug> break ; case ETHERTYPE_TEB : ether_print ( ndo , bp , len , ndo -> ndo_snapend - bp , NULL , NULL ) ; break ; default : ND_PRINT ( ( ndo , \"gre-proto-0x%x\" , prot ) ) ; } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bp , len ) ; break ; case ETHERTYPE_TEB : ether_print ( ndo , bp , len <S2SV_ModStart> ndo_snapend - bp <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9211\n\n```\nCWE-476 static int crypto_skcipher_init_tfm ( struct crypto_tfm * tfm ) { struct crypto_skcipher * skcipher = __crypto_skcipher_cast ( tfm ) ; struct skcipher_alg * alg = crypto_skcipher_alg ( skcipher ) ; if ( tfm -> __crt_alg -> cra_type == & crypto_blkcipher_type ) return crypto_init_skcipher_ops_blkcipher ( tfm ) ; if ( tfm -> __crt_alg -> cra_type == & crypto_ablkcipher_type || tfm -> __crt_alg -> cra_type == & crypto_givcipher_type ) return crypto_init_skcipher_ops_ablkcipher ( tfm ) ; <S2SV_StartBug> skcipher -> setkey = alg -> setkey ; <S2SV_EndBug> skcipher -> encrypt = alg -> encrypt ; skcipher -> decrypt = alg -> decrypt ; skcipher -> ivsize = alg -> ivsize ; skcipher -> keysize = alg -> max_keysize ; if ( alg -> exit ) skcipher -> base . exit = crypto_skcipher_exit_tfm ; if ( alg -> init ) return alg -> init ( skcipher ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> setkey = skcipher_setkey <S2SV_ModEnd> ; skcipher ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 mod_ty Ta3AST_FromNodeObject ( const node * n , PyCompilerFlags * flags , PyObject * filename , int feature_version , PyArena * arena ) { int i , j , k , num ; asdl_seq * stmts = NULL ; asdl_seq * type_ignores = NULL ; stmt_ty s ; node * ch ; struct compiling c ; mod_ty res = NULL ; asdl_seq * argtypes = NULL ; expr_ty ret , arg ; c . c_arena = arena ; c . c_filename = filename ; c . c_normalize = NULL ; <S2SV_StartBug> c . c_normalize_args = NULL ; <S2SV_EndBug> c . c_feature_version = feature_version ; if ( TYPE ( n ) == encoding_decl ) n = CHILD ( n , 0 ) ; k = 0 ; switch ( TYPE ( n ) ) { case file_input : stmts = _Ta3_asdl_seq_new ( num_stmts ( n ) , arena ) ; if ( ! stmts ) goto out ; for ( i = 0 ; i < NCH ( n ) - 1 ; i ++ ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == NEWLINE ) continue ; REQ ( ch , stmt ) ; num = num_stmts ( ch ) ; if ( num == 1 ) { s = ast_for_stmt ( & c , ch ) ; if ( ! s ) goto out ; asdl_seq_SET ( stmts , k ++ , s ) ; } else { ch = CHILD ( ch , 0 ) ; REQ ( ch , simple_stmt ) ; for ( j = 0 ; j < num ; j ++ ) { s = ast_for_stmt ( & c , CHILD ( ch , j * 2 ) ) ; if ( ! s ) goto out ; asdl_seq_SET ( stmts , k ++ , s ) ; } } } ch = CHILD ( n , NCH ( n ) - 1 ) ; REQ ( ch , ENDMARKER ) ; num = NCH ( ch ) ; type_ignores = _Ta3_asdl_seq_new ( num , arena ) ; if ( ! type_ignores ) goto out ; for ( i = 0 ; i < num ; i ++ ) { type_ignore_ty ti = TypeIgnore ( LINENO ( CHILD ( ch , i ) ) , arena ) ; if ( ! ti ) goto out ; asdl_seq_SET ( type_ignores , i , ti ) ; } res = Module ( stmts , type_ignores , arena ) ; break ; case eval_input : { expr_ty testlist_ast ; testlist_ast = ast_for_testlist ( & c , CHILD ( n , 0 ) ) ; if ( ! testlist_ast ) goto out ; res = Expression ( testlist_ast , arena ) ; break ; } case single_input : if ( TYPE ( CHILD ( n , 0 ) ) == NEWLINE ) { stmts = _Ta3_asdl_seq_new ( 1 , arena ) ; if ( ! stmts ) goto out ; asdl_seq_SET ( stmts , 0 , Pass ( n -> n_lineno , n -> n_col_offset , arena ) ) ; if ( ! asdl_seq_GET ( stmts , 0 ) ) goto out ; res = Interactive ( stmts , arena ) ; } else { n = CHILD ( n , 0 ) ; num = num_stmts ( n ) ; stmts = _Ta3_asdl_seq_new ( num , arena ) ; if ( ! stmts ) goto out ; if ( num == 1 ) { s = ast_for_stmt ( & c , n ) ; if ( ! s ) goto out ; asdl_seq_SET ( stmts , 0 , s ) ; } else { REQ ( n , simple_stmt ) ; for ( i = 0 ; i < NCH ( n ) ; i += 2 ) { if ( TYPE ( CHILD ( n , i ) ) == NEWLINE ) break ; s = ast_for_stmt ( & c , CHILD ( n , i ) ) ; if ( ! s ) goto out ; asdl_seq_SET ( stmts , i / 2 , s ) ; } } res = Interactive ( stmts , arena ) ; } break ; case func_type_input : n = CHILD ( n , 0 ) ; REQ ( n , func_type ) ; if ( TYPE ( CHILD ( n , 1 ) ) == typelist ) { ch = CHILD ( n , 1 ) ; num = 0 ; for ( i = 0 ; i < NCH ( ch ) ; i ++ ) { if ( TYPE ( CHILD ( ch , i ) ) == test ) num ++ ; } argtypes = _Ta3_asdl_seq_new ( num , arena ) ; j = 0 ; for ( i = 0 ; i < NCH ( ch ) ; i ++ ) { if ( TYPE ( CHILD ( ch , i ) ) == test ) { arg = ast_for_expr ( & c , CHILD ( ch , i ) ) ; if ( ! arg ) goto out ; asdl_seq_SET ( argtypes , j ++ , arg ) ; } } } else argtypes = _Ta3_asdl_seq_new ( 0 , arena ) ; ret = ast_for_expr ( & c , CHILD ( n , NCH ( n ) - 1 ) ) ; if ( ! ret ) goto out ; res = FunctionType ( argtypes , ret , arena ) ; break ; default : PyErr_Format ( PyExc_SystemError , \"invalid<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>Ta3AST_FromNode\" , TYPE ( n ) ) ; goto out ; } out : if ( c . c_normalize ) { Py_DECREF ( c . c_normalize ) ; <S2SV_StartBug> PyTuple_SET_ITEM ( c . c_normalize_args , 1 , NULL ) ; <S2SV_EndBug> Py_DECREF ( c . c_normalize_args ) ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; c . <S2SV_ModEnd> c_feature_version = feature_version <S2SV_ModStart> c_normalize ) ; <S2SV_ModEnd> } return res\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_encode_block_intra ( MACROBLOCK * x , int plane , int block , <S2SV_EndBug> BLOCK_SIZE plane_bsize , TX_SIZE tx_size , <S2SV_StartBug> unsigned char * skip ) { <S2SV_EndBug> <S2SV_StartBug> struct encode_b_args arg = { x , NULL , skip } ; <S2SV_EndBug> encode_block_intra ( plane , block , plane_bsize , tx_size , & arg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_encode_block_intra ( <S2SV_ModEnd> int plane , <S2SV_ModStart> TX_SIZE tx_size , void * arg <S2SV_ModEnd> ) { struct <S2SV_ModStart> { struct encode_b_args * const args = arg ; MACROBLOCK * const x = args -> x ; MACROBLOCKD * const xd = & x -> e_mbd ; MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; struct macroblock_plane * const p = & x -> plane [ plane ] ; struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; tran_low_t * coeff = BLOCK_OFFSET ( p -> coeff , block ) ; tran_low_t * qcoeff = BLOCK_OFFSET ( p -> qcoeff , block ) ; tran_low_t * dqcoeff = BLOCK_OFFSET ( pd -> dqcoeff , block ) ; const scan_order * scan_order ; TX_TYPE tx_type = DCT_DCT ; PREDICTION_MODE mode ; const int bwl = b_width_log2_lookup [ plane_bsize ] ; const int diff_stride = 4 * ( 1 << bwl ) ; uint8_t * src , * dst ; int16_t * src_diff ; uint16_t * eob = & p -> eobs [ block ] ; const int src_stride = p -> src . stride ; const int dst_stride = pd -> dst . stride ; int i , j ; txfrm_block_to_raster_xy ( plane_bsize , tx_size , block , & i , & j ) ; dst = & pd -> dst . buf [ 4 * ( j * dst_stride + i ) ] ; src = & p -> src . buf [ 4 * ( j * src_stride + i ) ] ; src_diff = & p -> src_diff [ 4 * ( j * diff_stride + i ) ] ; if ( tx_size == TX_4X4 ) { tx_type = get_tx_type_4x4 ( pd -> plane_type , xd , block ) ; scan_order = & vp9_scan_orders [ TX_4X4 ] [ tx_type ] ; mode = plane == 0 ? get_y_mode ( xd -> mi [ 0 ] , block ) : mbmi -> uv_mode ; } else { mode = plane == 0 ? mbmi -> mode : mbmi -> uv_mode ; if ( tx_size == TX_32X32 ) { scan_order = & vp9_default_scan_orders [ TX_32X32 ] ; } else { tx_type = get_tx_type ( pd -> plane_type , xd ) ; scan_order = & vp9_scan_orders [ tx_size ] [ tx_type ] ; } } vp9_predict_intra_block ( xd , bwl , tx_size , mode , x -> skip_encode ? src : dst , x -> skip_encode ? src_stride : dst_stride , dst , dst_stride , i , j , plane ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { switch ( tx_size ) { case TX_32X32 : if ( ! x -> skip_recode ) { vpx_highbd_subtract_block ( 32 , 32 , src_diff , diff_stride , src , src_stride , dst , dst_stride , xd -> bd ) ; highbd_fdct32x32 ( x -> use_lp32x32fdct , src_diff , coeff , diff_stride ) ; vpx_highbd_quantize_b_32x32 ( coeff , 1024 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; } if ( ! x -> skip_encode && * eob ) { vp9_highbd_idct32x32_add ( dqcoeff , dst , dst_stride , * eob , xd -> bd ) ; } break ; case TX_16X16 : if ( ! x -> skip_recode ) { vpx_highbd_subtract_block ( 16 , 16 , src_diff , diff_stride , src , src_stride , dst , dst_stride , xd -> bd ) ; if ( tx_type == DCT_DCT ) vpx_highbd_fdct16x16 ( src_diff , coeff , diff_stride ) ; else vp9_highbd_fht16x16 ( src_diff , coeff , diff_stride , tx_type ) ; vpx_highbd_quantize_b ( coeff , 256 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; } if ( ! x -> skip_encode && * eob ) { vp9_highbd_iht16x16_add ( tx_type , dqcoeff , dst , dst_stride , * eob , xd -> bd ) ; } break ; case TX_8X8 : if ( ! x -> skip_recode ) { vpx_highbd_subtract_block ( 8 , 8 , src_diff , diff_stride , src , src_stride , dst , dst_stride , xd -> bd ) ; if ( tx_type == DCT_DCT ) vpx_highbd_fdct8x8 ( src_diff , coeff , diff_stride ) ; else vp9_highbd_fht8x8 ( src_diff , coeff , diff_stride , tx_type ) ; vpx_highbd_quantize_b ( coeff , 64 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; } if ( ! x -> skip_encode && * eob ) { vp9_highbd_iht8x8_add ( tx_type , dqcoeff , dst , dst_stride , * eob , xd -> bd ) ; } break ; case TX_4X4 : if ( ! x -> skip_recode ) { vpx_highbd_subtract_block ( 4 , 4 , src_diff , diff_stride , src , src_stride , dst , dst_stride , xd -> bd ) ; if ( tx_type != DCT_DCT ) vp9_highbd_fht4x4 ( src_diff , coeff , diff_stride , tx_type ) ; else x -> fwd_txm4x4 ( src_diff , coeff , diff_stride ) ; vpx_highbd_quantize_b ( coeff , 16 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; } if ( ! x -> skip_encode && * eob ) { if ( tx_type == DCT_DCT ) { x -> highbd_itxm_add ( dqcoeff , dst , dst_stride , * eob , xd -> bd ) ; } else { vp9_highbd_iht4x4_16_add ( dqcoeff , dst , dst_stride , tx_type , xd -> bd ) ; } } break ; default : assert ( 0 ) ; return ; } if ( * eob ) * ( args -> skip ) = 0 ; return ; } # endif switch ( tx_size ) { case TX_32X32 : if ( ! x -> skip_recode ) { vpx_subtract_block ( 32 , 32 , src_diff , diff_stride , src , src_stride , dst , dst_stride ) ; fdct32x32 ( x -> use_lp32x32fdct , src_diff , coeff , diff_stride ) ; vpx_quantize_b_32x32 ( coeff , 1024 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; } if ( ! x -> skip_encode && * eob ) vp9_idct32x32_add ( dqcoeff , dst , dst_stride , * eob ) ; break ; case TX_16X16 : if ( ! x -> skip_recode ) { vpx_subtract_block ( 16 , 16 , src_diff , diff_stride , src , src_stride , dst , dst_stride ) ; vp9_fht16x16 ( src_diff , coeff , diff_stride , tx_type ) ; vpx_quantize_b ( coeff , 256 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; } if ( ! x -> skip_encode && * eob ) vp9_iht16x16_add ( tx_type , dqcoeff , dst , dst_stride , * eob ) ; break ; case TX_8X8 : if ( ! x -> skip_recode ) { vpx_subtract_block ( 8 , 8 , src_diff , diff_stride , src , src_stride , dst , dst_stride ) ; vp9_fht8x8 ( src_diff , coeff , diff_stride , tx_type ) ; vpx_quantize_b ( coeff , 64 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; } if ( ! x -> skip_encode && * eob ) vp9_iht8x8_add ( tx_type , dqcoeff , dst , dst_stride , * eob ) ; break ; case TX_4X4 : if ( ! x -> skip_recode ) { vpx_subtract_block ( 4 , 4 , src_diff , diff_stride , src , src_stride , dst , dst_stride ) ; if ( tx_type != DCT_DCT ) vp9_fht4x4 ( src_diff , coeff , diff_stride , tx_type ) ; else x -> fwd_txm4x4 ( src_diff , coeff , diff_stride ) ; vpx_quantize_b ( coeff , 16 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; } if ( ! x -> skip_encode && * eob ) { if ( tx_type == DCT_DCT ) x -> itxm_add ( dqcoeff , dst , dst_stride , * eob ) ; else vp9_iht4x4_16_add ( dqcoeff , dst , dst_stride , tx_type ) ; } break ; default : assert ( 0 ) ; break ; } if ( * eob ) * ( args -> skip ) = 0 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5688\n\n```\nCWE-119 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; one = 1 ; image = AcquireImage ( image_info , exception ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> resolution . x = BitmapHeader1 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> resolution . x = BitmapHeader2 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; <S2SV_StartBug> UnpackRaster : <S2SV_EndBug> if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp , exception ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; <S2SV_StartBug> image -> rows = Bitmap2Header1 . Height ; <S2SV_EndBug> if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { size_t one ; one = 1 ; image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk + 1 , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( image , BImgBuff , i , bpp , exception ) ; } if ( BImgBuff ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp , exception ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } <S2SV_StartBug> status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; <S2SV_EndBug> if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; UnpackRaster : status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; <S2SV_ModStart> Bitmap2Header1 . Height ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break <S2SV_ModStart> ; } } <S2SV_ModEnd> Finish : (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7145\n\n```\nCWE-287 int m_authenticate ( struct Client * cptr , struct Client * sptr , int parc , char * parv [ ] ) { struct Client * acptr ; int first = 0 ; char realhost [ HOSTLEN + 3 ] ; char * hoststr = ( cli_sockhost ( cptr ) ? cli_sockhost ( cptr ) : cli_sock_ip ( cptr ) ) ; if ( ! CapActive ( cptr , CAP_SASL ) ) return 0 ; if ( parc < 2 ) return need_more_params ( cptr , \"AUTHENTICATE\" ) ; if ( strlen ( parv [ 1 ] ) > 400 ) return send_reply ( cptr , ERR_SASLTOOLONG ) ; if ( IsSASLComplete ( cptr ) ) return send_reply ( cptr , ERR_SASLALREADY ) ; if ( ! ( acptr = cli_saslagent ( cptr ) ) ) { if ( strcmp ( feature_str ( FEAT_SASL_SERVER ) , \"*\" ) ) acptr = find_match_server ( ( char * ) feature_str ( FEAT_SASL_SERVER ) ) ; else acptr = NULL ; } if ( ! acptr && strcmp ( feature_str ( FEAT_SASL_SERVER ) , \"*\" ) ) return send_reply ( cptr , ERR_SASLFAIL , \":<S2SV_blank>service<S2SV_blank>unavailable\" ) ; if ( acptr && IsMe ( acptr ) ) return 0 ; if ( ! cli_saslcookie ( cptr ) ) { do { cli_saslcookie ( cptr ) = ircrandom ( ) & 0x7fffffff ; } while ( ! cli_saslcookie ( cptr ) ) ; first = 1 ; } if ( strchr ( hoststr , ':' ) != NULL ) ircd_snprintf ( 0 , realhost , sizeof ( realhost ) , \"[%s]\" , hoststr ) ; else ircd_strncpy ( realhost , hoststr , sizeof ( realhost ) ) ; if ( acptr ) { if ( first ) { <S2SV_StartBug> if ( ! EmptyString ( cli_sslclifp ( cptr ) ) ) <S2SV_EndBug> sendcmdto_one ( & me , CMD_SASL , acptr , \"%C<S2SV_blank>%C!%u.%u<S2SV_blank>S<S2SV_blank>%s<S2SV_blank>:%s\" , acptr , & me , cli_fd ( cptr ) , cli_saslcookie ( cptr ) , parv [ 1 ] , cli_sslclifp ( cptr ) ) ; else sendcmdto_one ( & me , CMD_SASL , acptr , \"%C<S2SV_blank>%C!%u.%u<S2SV_blank>S<S2SV_blank>:%s\" , acptr , & me , cli_fd ( cptr ) , cli_saslcookie ( cptr ) , parv [ 1 ] ) ; if ( feature_bool ( FEAT_SASL_SENDHOST ) ) sendcmdto_one ( & me , CMD_SASL , acptr , \"%C<S2SV_blank>%C!%u.%u<S2SV_blank>H<S2SV_blank>:%s@%s:%s\" , acptr , & me , cli_fd ( cptr ) , cli_saslcookie ( cptr ) , cli_username ( cptr ) , realhost , cli_sock_ip ( cptr ) ) ; } else { sendcmdto_one ( & me , CMD_SASL , acptr , \"%C<S2SV_blank>%C!%u.%u<S2SV_blank>C<S2SV_blank>:%s\" , acptr , & me , cli_fd ( cptr ) , cli_saslcookie ( cptr ) , parv [ 1 ] ) ; } } else { if ( first ) { <S2SV_StartBug> if ( ! EmptyString ( cli_sslclifp ( cptr ) ) ) <S2SV_EndBug> sendcmdto_serv_butone ( & me , CMD_SASL , cptr , \"*<S2SV_blank>%C!%u.%u<S2SV_blank>S<S2SV_blank>%s<S2SV_blank>:%s\" , & me , cli_fd ( cptr ) , cli_saslcookie ( cptr ) , parv [ 1 ] , cli_sslclifp ( cptr ) ) ; else sendcmdto_serv_butone ( & me , CMD_SASL , cptr , \"*<S2SV_blank>%C!%u.%u<S2SV_blank>S<S2SV_blank>:%s\" , & me , cli_fd ( cptr ) , cli_saslcookie ( cptr ) , parv [ 1 ] ) ; if ( feature_bool ( FEAT_SASL_SENDHOST ) ) sendcmdto_serv_butone ( & me , CMD_SASL , cptr , \"*<S2SV_blank>%C!%u.%u<S2SV_blank>H<S2SV_blank>:%s@%s:%s\" , & me , cli_fd ( cptr ) , cli_saslcookie ( cptr ) , cli_username ( cptr ) , realhost , cli_sock_ip ( cptr ) ) ; } else { sendcmdto_serv_butone ( & me , CMD_SASL , cptr , \"*<S2SV_blank>%C!%u.%u<S2SV_blank>C<S2SV_blank>:%s\" , & me , cli_fd ( cptr ) , cli_saslcookie ( cptr ) , parv [ 1 ] ) ; } } if ( ! t_active ( & cli_sasltimeout ( cptr ) ) ) timer_add ( timer_init ( & cli_sasltimeout ( cptr ) ) , sasl_timeout_callback , ( void * ) cptr , TT_RELATIVE , feature_int ( FEAT_SASL_TIMEOUT ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( * parv [ 1 ] == ':' || strchr ( parv [ 1 ] , '<S2SV_blank>' ) ) return exit_client ( cptr , sptr , sptr , \"Malformed<S2SV_blank>AUTHENTICATE\" ) ; if ( <S2SV_ModStart> { if ( * parv [ 1 ] == ':' || strchr ( parv [ 1 ] , '<S2SV_blank>' ) ) return exit_client ( cptr , sptr , sptr , \"Malformed<S2SV_blank>AUTHENTICATE\" ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2925\n\n```\nCWE-254 static int follow_dotdot_rcu ( struct nameidata * nd ) { struct inode * inode = nd -> inode ; if ( ! nd -> root . mnt ) set_root_rcu ( nd ) ; while ( 1 ) { if ( path_equal ( & nd -> path , & nd -> root ) ) break ; if ( nd -> path . dentry != nd -> path . mnt -> mnt_root ) { struct dentry * old = nd -> path . dentry ; struct dentry * parent = old -> d_parent ; unsigned seq ; inode = parent -> d_inode ; seq = read_seqcount_begin ( & parent -> d_seq ) ; if ( unlikely ( read_seqcount_retry ( & old -> d_seq , nd -> seq ) ) ) return - ECHILD ; nd -> path . dentry = parent ; nd -> seq = seq ; <S2SV_StartBug> break ; <S2SV_EndBug> } else { struct mount * mnt = real_mount ( nd -> path . mnt ) ; struct mount * mparent = mnt -> mnt_parent ; struct dentry * mountpoint = mnt -> mnt_mountpoint ; struct inode * inode2 = mountpoint -> d_inode ; unsigned seq = read_seqcount_begin ( & mountpoint -> d_seq ) ; if ( unlikely ( read_seqretry ( & mount_lock , nd -> m_seq ) ) ) return - ECHILD ; if ( & mparent -> mnt == nd -> path . mnt ) break ; nd -> path . dentry = mountpoint ; nd -> path . mnt = & mparent -> mnt ; inode = inode2 ; nd -> seq = seq ; } } while ( unlikely ( d_mountpoint ( nd -> path . dentry ) ) ) { struct mount * mounted ; mounted = __lookup_mnt ( nd -> path . mnt , nd -> path . dentry ) ; if ( unlikely ( read_seqretry ( & mount_lock , nd -> m_seq ) ) ) return - ECHILD ; if ( ! mounted ) break ; nd -> path . mnt = & mounted -> mnt ; nd -> path . dentry = mounted -> mnt . mnt_root ; inode = nd -> path . dentry -> d_inode ; nd -> seq = read_seqcount_begin ( & nd -> path . dentry -> d_seq ) ; } nd -> inode = inode ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = seq ; if ( unlikely ( ! path_connected ( & nd -> path ) ) ) return - ENOENT ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 SQLRETURN SQLSetDescField ( SQLHDESC descriptor_handle , SQLSMALLINT rec_number , SQLSMALLINT field_identifier , SQLPOINTER value , SQLINTEGER buffer_length ) { DMHDESC descriptor = ( DMHDESC ) descriptor_handle ; SQLRETURN ret ; SQLCHAR s1 [ 100 + LOG_MESSAGE_LEN ] ; int isStrField = 0 ; if ( ! __validate_desc ( descriptor ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>SQL_INVALID_HANDLE\" ) ; return SQL_INVALID_HANDLE ; } function_entry ( descriptor ) ; if ( log_info . log_flag ) { <S2SV_StartBug> sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tEntry:\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tDescriptor<S2SV_blank>=<S2SV_blank>%p\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tRec<S2SV_blank>Number<S2SV_blank>=<S2SV_blank>%d\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tField<S2SV_blank>Ident<S2SV_blank>=<S2SV_blank>%s\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tValue<S2SV_blank>=<S2SV_blank>%p\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tBuffer<S2SV_blank>Length<S2SV_blank>=<S2SV_blank>%d\" , <S2SV_EndBug> descriptor , rec_number , __desc_attr_as_string ( s1 , field_identifier ) , value , ( int ) buffer_length ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } thread_protect ( SQL_HANDLE_DESC , descriptor ) ; if ( descriptor -> connection -> state < STATE_C4 ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>HY010\" ) ; __post_internal_error ( & descriptor -> error , ERROR_HY010 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( __check_stmt_from_desc ( descriptor , STATE_S8 ) || __check_stmt_from_desc ( descriptor , STATE_S9 ) || __check_stmt_from_desc ( descriptor , STATE_S10 ) || __check_stmt_from_desc ( descriptor , STATE_S11 ) || __check_stmt_from_desc ( descriptor , STATE_S12 ) || __check_stmt_from_desc ( descriptor , STATE_S13 ) || __check_stmt_from_desc ( descriptor , STATE_S14 ) || __check_stmt_from_desc ( descriptor , STATE_S15 ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>HY010\" ) ; __post_internal_error ( & descriptor -> error , ERROR_HY010 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( rec_number < 0 ) { __post_internal_error ( & descriptor -> error , ERROR_07009 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } switch ( field_identifier ) { case SQL_DESC_ALLOC_TYPE : case SQL_DESC_ARRAY_SIZE : case SQL_DESC_ARRAY_STATUS_PTR : case SQL_DESC_BIND_OFFSET_PTR : case SQL_DESC_BIND_TYPE : case SQL_DESC_COUNT : case SQL_DESC_ROWS_PROCESSED_PTR : case SQL_DESC_AUTO_UNIQUE_VALUE : case SQL_DESC_CASE_SENSITIVE : case SQL_DESC_CONCISE_TYPE : case SQL_DESC_DATA_PTR : case SQL_DESC_DATETIME_INTERVAL_CODE : case SQL_DESC_DATETIME_INTERVAL_PRECISION : case SQL_DESC_DISPLAY_SIZE : case SQL_DESC_FIXED_PREC_SCALE : case SQL_DESC_INDICATOR_PTR : case SQL_DESC_LENGTH : case SQL_DESC_NULLABLE : case SQL_DESC_NUM_PREC_RADIX : case SQL_DESC_OCTET_LENGTH : case SQL_DESC_OCTET_LENGTH_PTR : case SQL_DESC_PARAMETER_TYPE : case SQL_DESC_PRECISION : case SQL_DESC_ROWVER : case SQL_DESC_SCALE : case SQL_DESC_SEARCHABLE : case SQL_DESC_TYPE : case SQL_DESC_UNNAMED : case SQL_DESC_UNSIGNED : case SQL_DESC_UPDATABLE : isStrField = 0 ; break ; case SQL_DESC_BASE_COLUMN_NAME : case SQL_DESC_BASE_TABLE_NAME : case SQL_DESC_CATALOG_NAME : case SQL_DESC_LABEL : case SQL_DESC_LITERAL_PREFIX : case SQL_DESC_LITERAL_SUFFIX : case SQL_DESC_LOCAL_TYPE_NAME : case SQL_DESC_NAME : case SQL_DESC_SCHEMA_NAME : case SQL_DESC_TABLE_NAME : case SQL_DESC_TYPE_NAME : isStrField = 1 ; break ; default : isStrField = buffer_length != SQL_IS_POINTER && buffer_length != SQL_IS_INTEGER && buffer_length != SQL_IS_UINTEGER && buffer_length != SQL_IS_SMALLINT && buffer_length != SQL_IS_USMALLINT ; } if ( isStrField && buffer_length < 0 && buffer_length != SQL_NTS ) { __post_internal_error ( & descriptor -> error , ERROR_HY090 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } <S2SV_StartBug> if ( field_identifier == SQL_DESC_COUNT && ( SQLINTEGER ) value < 0 ) <S2SV_EndBug> { __post_internal_error ( & descriptor -> error , ERROR_07009 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } <S2SV_StartBug> if ( field_identifier == SQL_DESC_PARAMETER_TYPE && value != SQL_PARAM_INPUT <S2SV_EndBug> <S2SV_StartBug> && value != SQL_PARAM_OUTPUT && value != SQL_PARAM_INPUT_OUTPUT && <S2SV_EndBug> <S2SV_StartBug> value != SQL_PARAM_INPUT_OUTPUT_STREAM && value != SQL_PARAM_OUTPUT_STREAM ) <S2SV_EndBug> { __post_internal_error ( & descriptor -> error , ERROR_HY105 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( CHECK_SQLSETDESCFIELD ( descriptor -> connection ) ) { ret = SQLSETDESCFIELD ( descriptor -> connection , descriptor -> driver_desc , rec_number , field_identifier , value , buffer_length ) ; } else if ( CHECK_SQLSETDESCFIELDW ( descriptor -> connection ) ) { SQLWCHAR * s1 = NULL ; if ( isStrField ) { s1 = ansi_to_unicode_alloc ( value , buffer_length , descriptor -> connection , NULL ) ; if ( SQL_NTS != buffer_length ) { buffer_length *= sizeof ( SQLWCHAR ) ; } } else { s1 = value ; } ret = SQLSETDESCFIELDW ( descriptor -> connection , descriptor -> driver_desc , rec_number , field_identifier , s1 , buffer_length ) ; if ( isStrField ) { if ( s1 ) free ( s1 ) ; } } else { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>IM001\" ) ; __post_internal_error ( & descriptor -> error , ERROR_IM001 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( log_info . log_flag ) { sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tExit:[%s]\" , __get_return_status ( ret , s1 ) ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } return function_return ( SQL_HANDLE_DESC , descriptor , ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> msg , \"\\\\n\\\\t\\\\tEntry:\\\\\\n\\\\n\\\\t\\\\t\\\\tDescriptor<S2SV_blank>=<S2SV_blank>%p\\\\\\n\\\\n\\\\t\\\\t\\\\tRec<S2SV_blank>Number<S2SV_blank>=<S2SV_blank>%d\\\\\\n\\\\n\\\\t\\\\t\\\\tField<S2SV_blank>Ident<S2SV_blank>=<S2SV_blank>%s\\\\\\n\\\\n\\\\t\\\\t\\\\tValue<S2SV_blank>=<S2SV_blank>%p\\\\\\n\\\\n\\\\t\\\\t\\\\tBuffer<S2SV_blank>Length<S2SV_blank>=<S2SV_blank>%d\" <S2SV_ModEnd> , descriptor , <S2SV_ModStart> SQL_DESC_COUNT && ( intptr_t <S2SV_ModEnd> ) value < <S2SV_ModStart> == SQL_DESC_PARAMETER_TYPE && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_OUTPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT_OUTPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT_OUTPUT_STREAM && ( intptr_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 int ext4_ext_insert_extent ( handle_t * handle , struct inode * inode , struct ext4_ext_path * path , struct ext4_extent * newext , int flag ) { struct ext4_extent_header * eh ; struct ext4_extent * ex , * fex ; struct ext4_extent * nearex ; struct ext4_ext_path * npath = NULL ; int depth , len , err ; ext4_lblk_t next ; unsigned uninitialized = 0 ; BUG_ON ( ext4_ext_get_actual_len ( newext ) == 0 ) ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; BUG_ON ( path [ depth ] . p_hdr == NULL ) ; <S2SV_StartBug> if ( ex && ( flag != EXT4_GET_BLOCKS_PRE_IO ) <S2SV_EndBug> && ext4_can_extents_be_merged ( inode , ex , newext ) ) { ext_debug ( \"append<S2SV_blank>[%d]%d<S2SV_blank>block<S2SV_blank>to<S2SV_blank>%d:[%d]%d<S2SV_blank>(from<S2SV_blank>%llu)\\\\n\" , ext4_ext_is_uninitialized ( newext ) , ext4_ext_get_actual_len ( newext ) , le32_to_cpu ( ex -> ee_block ) , ext4_ext_is_uninitialized ( ex ) , ext4_ext_get_actual_len ( ex ) , ext_pblock ( ex ) ) ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) return err ; if ( ext4_ext_is_uninitialized ( ex ) ) uninitialized = 1 ; ex -> ee_len = cpu_to_le16 ( ext4_ext_get_actual_len ( ex ) + ext4_ext_get_actual_len ( newext ) ) ; if ( uninitialized ) ext4_ext_mark_uninitialized ( ex ) ; eh = path [ depth ] . p_hdr ; nearex = ex ; goto merge ; } repeat : depth = ext_depth ( inode ) ; eh = path [ depth ] . p_hdr ; if ( le16_to_cpu ( eh -> eh_entries ) < le16_to_cpu ( eh -> eh_max ) ) goto has_space ; fex = EXT_LAST_EXTENT ( eh ) ; next = ext4_ext_next_leaf_block ( inode , path ) ; if ( le32_to_cpu ( newext -> ee_block ) > le32_to_cpu ( fex -> ee_block ) && next != EXT_MAX_BLOCK ) { ext_debug ( \"next<S2SV_blank>leaf<S2SV_blank>block<S2SV_blank>-<S2SV_blank>%d\\\\n\" , next ) ; BUG_ON ( npath != NULL ) ; npath = ext4_ext_find_extent ( inode , next , NULL ) ; if ( IS_ERR ( npath ) ) return PTR_ERR ( npath ) ; BUG_ON ( npath -> p_depth != path -> p_depth ) ; eh = npath [ depth ] . p_hdr ; if ( le16_to_cpu ( eh -> eh_entries ) < le16_to_cpu ( eh -> eh_max ) ) { ext_debug ( \"next<S2SV_blank>leaf<S2SV_blank>isnt<S2SV_blank>full(%d)\\\\n\" , le16_to_cpu ( eh -> eh_entries ) ) ; path = npath ; goto repeat ; } ext_debug ( \"next<S2SV_blank>leaf<S2SV_blank>has<S2SV_blank>no<S2SV_blank>free<S2SV_blank>space(%d,%d)\\\\n\" , le16_to_cpu ( eh -> eh_entries ) , le16_to_cpu ( eh -> eh_max ) ) ; } err = ext4_ext_create_new_leaf ( handle , inode , path , newext ) ; if ( err ) goto cleanup ; depth = ext_depth ( inode ) ; eh = path [ depth ] . p_hdr ; has_space : nearex = path [ depth ] . p_ext ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto cleanup ; if ( ! nearex ) { ext_debug ( \"first<S2SV_blank>extent<S2SV_blank>in<S2SV_blank>the<S2SV_blank>leaf:<S2SV_blank>%d:%llu:[%d]%d\\\\n\" , le32_to_cpu ( newext -> ee_block ) , ext_pblock ( newext ) , ext4_ext_is_uninitialized ( newext ) , ext4_ext_get_actual_len ( newext ) ) ; path [ depth ] . p_ext = EXT_FIRST_EXTENT ( eh ) ; } else if ( le32_to_cpu ( newext -> ee_block ) > le32_to_cpu ( nearex -> ee_block ) ) { if ( nearex != EXT_LAST_EXTENT ( eh ) ) { len = EXT_MAX_EXTENT ( eh ) - nearex ; len = ( len - 1 ) * sizeof ( struct ext4_extent ) ; len = len < 0 ? 0 : len ; ext_debug ( \"insert<S2SV_blank>%d:%llu:[%d]%d<S2SV_blank>after:<S2SV_blank>nearest<S2SV_blank>0x%p,<S2SV_blank>\" \"move<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>0x%p<S2SV_blank>to<S2SV_blank>0x%p\\\\n\" , le32_to_cpu ( newext -> ee_block ) , ext_pblock ( newext ) , ext4_ext_is_uninitialized ( newext ) , ext4_ext_get_actual_len ( newext ) , nearex , len , nearex + 1 , nearex + 2 ) ; memmove ( nearex + 2 , nearex + 1 , len ) ; } path [ depth ] . p_ext = nearex + 1 ; } else { BUG_ON ( newext -> ee_block == nearex -> ee_block ) ; len = ( EXT_MAX_EXTENT ( eh ) - nearex ) * sizeof ( struct ext4_extent ) ; len = len < 0 ? 0 : len ; ext_debug ( \"insert<S2SV_blank>%d:%llu:[%d]%d<S2SV_blank>before:<S2SV_blank>nearest<S2SV_blank>0x%p,<S2SV_blank>\" \"move<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>0x%p<S2SV_blank>to<S2SV_blank>0x%p\\\\n\" , le32_to_cpu ( newext -> ee_block ) , ext_pblock ( newext ) , ext4_ext_is_uninitialized ( newext ) , ext4_ext_get_actual_len ( newext ) , nearex , len , nearex + 1 , nearex + 2 ) ; memmove ( nearex + 1 , nearex , len ) ; path [ depth ] . p_ext = nearex ; } le16_add_cpu ( & eh -> eh_entries , 1 ) ; nearex = path [ depth ] . p_ext ; nearex -> ee_block = newext -> ee_block ; ext4_ext_store_pblock ( nearex , ext_pblock ( newext ) ) ; nearex -> ee_len = newext -> ee_len ; merge : <S2SV_StartBug> if ( flag != EXT4_GET_BLOCKS_PRE_IO ) <S2SV_EndBug> ext4_ext_try_to_merge ( inode , path , nearex ) ; err = ext4_ext_correct_indexes ( handle , inode , path ) ; if ( err ) goto cleanup ; err = ext4_ext_dirty ( handle , inode , path + depth ) ; cleanup : if ( npath ) { ext4_ext_drop_refs ( npath ) ; kfree ( npath ) ; } ext4_ext_invalidate_cache ( inode ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ex && ! ( flag & <S2SV_ModEnd> EXT4_GET_BLOCKS_PRE_IO ) && <S2SV_ModStart> : if ( ! ( flag & EXT4_GET_BLOCKS_PRE_IO ) <S2SV_ModEnd> ) ext4_ext_try_to_merge (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int ECDSA_verify ( int type , const unsigned char * dgst , int dgst_len , const unsigned char * sigbuf , int sig_len , EC_KEY * eckey ) { ECDSA_SIG * s ; <S2SV_StartBug> int ret = - 1 ; <S2SV_EndBug> s = ECDSA_SIG_new ( ) ; if ( s == NULL ) return ( ret ) ; <S2SV_StartBug> if ( d2i_ECDSA_SIG ( & s , & sigbuf , sig_len ) == NULL ) goto err ; <S2SV_EndBug> ret = ECDSA_do_verify ( dgst , dgst_len , s , eckey ) ; err : <S2SV_StartBug> ECDSA_SIG_free ( s ) ; <S2SV_EndBug> return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * s ; const unsigned char * p = sigbuf ; unsigned char * der = NULL ; int derlen = - 1 ; <S2SV_ModStart> s , & p <S2SV_ModEnd> , sig_len ) <S2SV_ModStart> == NULL ) goto err ; derlen = i2d_ECDSA_SIG ( s , & der ) ; if ( derlen != sig_len || memcmp ( sigbuf , der , derlen ) ) <S2SV_ModStart> ; err : if ( derlen > 0 ) { OPENSSL_cleanse ( der , derlen ) ; OPENSSL_free ( der ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15026\n\n```\nCWE-125 static inline void get_conn_text ( const conn * c , const int af , char * addr , struct sockaddr * sock_addr ) { char addr_text [ MAXPATHLEN ] ; addr_text [ 0 ] = '\\\\0' ; const char * protoname = \"?\" ; unsigned short port = 0 ; <S2SV_StartBug> switch ( af ) { <S2SV_EndBug> case AF_INET : ( void ) inet_ntop ( af , & ( ( struct sockaddr_in * ) sock_addr ) -> sin_addr , addr_text , sizeof ( addr_text ) - 1 ) ; port = ntohs ( ( ( struct sockaddr_in * ) sock_addr ) -> sin_port ) ; protoname = IS_UDP ( c -> transport ) ? \"udp\" : \"tcp\" ; break ; case AF_INET6 : addr_text [ 0 ] = '[' ; addr_text [ 1 ] = '\\\\0' ; if ( inet_ntop ( af , & ( ( struct sockaddr_in6 * ) sock_addr ) -> sin6_addr , addr_text + 1 , sizeof ( addr_text ) - 2 ) ) { strcat ( addr_text , \"]\" ) ; } port = ntohs ( ( ( struct sockaddr_in6 * ) sock_addr ) -> sin6_port ) ; protoname = IS_UDP ( c -> transport ) ? \"udp6\" : \"tcp6\" ; break ; case AF_UNIX : <S2SV_StartBug> strncpy ( addr_text , <S2SV_EndBug> <S2SV_StartBug> ( ( struct sockaddr_un * ) sock_addr ) -> sun_path , <S2SV_EndBug> sizeof ( addr_text ) - 1 ) ; addr_text [ sizeof ( addr_text ) - 1 ] = '\\\\0' ; protoname = \"unix\" ; break ; } if ( strlen ( addr_text ) < 2 ) { sprintf ( addr_text , \"<AF<S2SV_blank>%d>\" , af ) ; } if ( port ) { sprintf ( addr , \"%s:%s:%u\" , protoname , addr_text , port ) ; } else { sprintf ( addr , \"%s:%s\" , protoname , addr_text ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; size_t pathlen = 0 ; <S2SV_ModStart> case AF_UNIX : pathlen = sizeof ( <S2SV_ModEnd> ( ( struct <S2SV_ModStart> ) -> sun_path ) ; if ( MAXPATHLEN <= pathlen ) { pathlen = MAXPATHLEN - 1 ; } strncpy ( addr_text , ( ( struct sockaddr_un * ) sock_addr ) -> sun_path , pathlen ) ; addr_text [ pathlen <S2SV_ModEnd> ] = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8655\n\n```\nCWE-362 static int packet_set_ring ( struct sock * sk , union tpacket_req_u * req_u , int closing , int tx_ring ) { struct pgv * pg_vec = NULL ; struct packet_sock * po = pkt_sk ( sk ) ; int was_running , order = 0 ; struct packet_ring_buffer * rb ; struct sk_buff_head * rb_queue ; __be16 num ; int err = - EINVAL ; <S2SV_StartBug> struct tpacket_req * req = & req_u -> req ; <S2SV_EndBug> if ( ! closing && tx_ring && ( po -> tp_version > TPACKET_V2 ) ) { net_warn_ratelimited ( \"Tx-ring<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported.\\\\n\" ) ; goto out ; } rb = tx_ring ? & po -> tx_ring : & po -> rx_ring ; rb_queue = tx_ring ? & sk -> sk_write_queue : & sk -> sk_receive_queue ; err = - EBUSY ; if ( ! closing ) { if ( atomic_read ( & po -> mapped ) ) goto out ; if ( packet_read_pending ( rb ) ) goto out ; } if ( req -> tp_block_nr ) { err = - EBUSY ; if ( unlikely ( rb -> pg_vec ) ) goto out ; switch ( po -> tp_version ) { case TPACKET_V1 : po -> tp_hdrlen = TPACKET_HDRLEN ; break ; case TPACKET_V2 : po -> tp_hdrlen = TPACKET2_HDRLEN ; break ; case TPACKET_V3 : po -> tp_hdrlen = TPACKET3_HDRLEN ; break ; } err = - EINVAL ; if ( unlikely ( ( int ) req -> tp_block_size <= 0 ) ) goto out ; if ( unlikely ( ! PAGE_ALIGNED ( req -> tp_block_size ) ) ) goto out ; if ( po -> tp_version >= TPACKET_V3 && ( int ) ( req -> tp_block_size - BLK_PLUS_PRIV ( req_u -> req3 . tp_sizeof_priv ) ) <= 0 ) goto out ; if ( unlikely ( req -> tp_frame_size < po -> tp_hdrlen + po -> tp_reserve ) ) goto out ; if ( unlikely ( req -> tp_frame_size & ( TPACKET_ALIGNMENT - 1 ) ) ) goto out ; rb -> frames_per_block = req -> tp_block_size / req -> tp_frame_size ; if ( unlikely ( rb -> frames_per_block == 0 ) ) goto out ; if ( unlikely ( ( rb -> frames_per_block * req -> tp_block_nr ) != req -> tp_frame_nr ) ) goto out ; err = - ENOMEM ; order = get_order ( req -> tp_block_size ) ; pg_vec = alloc_pg_vec ( req , order ) ; if ( unlikely ( ! pg_vec ) ) goto out ; switch ( po -> tp_version ) { case TPACKET_V3 : if ( ! tx_ring ) init_prb_bdqc ( po , rb , pg_vec , req_u ) ; break ; default : break ; } } else { err = - EINVAL ; if ( unlikely ( req -> tp_frame_nr ) ) goto out ; } <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> spin_lock ( & po -> bind_lock ) ; was_running = po -> running ; num = po -> num ; if ( was_running ) { po -> num = 0 ; __unregister_prot_hook ( sk , false ) ; } spin_unlock ( & po -> bind_lock ) ; synchronize_net ( ) ; err = - EBUSY ; mutex_lock ( & po -> pg_vec_lock ) ; if ( closing || atomic_read ( & po -> mapped ) == 0 ) { err = 0 ; spin_lock_bh ( & rb_queue -> lock ) ; swap ( rb -> pg_vec , pg_vec ) ; rb -> frame_max = ( req -> tp_frame_nr - 1 ) ; rb -> head = 0 ; rb -> frame_size = req -> tp_frame_size ; spin_unlock_bh ( & rb_queue -> lock ) ; swap ( rb -> pg_vec_order , order ) ; swap ( rb -> pg_vec_len , req -> tp_block_nr ) ; rb -> pg_vec_pages = req -> tp_block_size / PAGE_SIZE ; po -> prot_hook . func = ( po -> rx_ring . pg_vec ) ? tpacket_rcv : packet_rcv ; skb_queue_purge ( rb_queue ) ; if ( atomic_read ( & po -> mapped ) ) pr_err ( \"packet_mmap:<S2SV_blank>vma<S2SV_blank>is<S2SV_blank>busy:<S2SV_blank>%d\\\\n\" , atomic_read ( & po -> mapped ) ) ; } mutex_unlock ( & po -> pg_vec_lock ) ; spin_lock ( & po -> bind_lock ) ; if ( was_running ) { po -> num = num ; register_prot_hook ( sk ) ; } spin_unlock ( & po -> bind_lock ) ; if ( closing && ( po -> tp_version > TPACKET_V2 ) ) { if ( ! tx_ring ) prb_shutdown_retire_blk_timer ( po , rb_queue ) ; } <S2SV_StartBug> release_sock ( sk ) ; <S2SV_EndBug> <S2SV_StartBug> if ( pg_vec ) <S2SV_EndBug> free_pg_vec ( pg_vec , order , req -> tp_block_nr ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> req_u -> req ; lock_sock ( sk ) <S2SV_ModStart> out ; } <S2SV_ModEnd> spin_lock ( & <S2SV_ModStart> ) ; } if ( pg_vec ) free_pg_vec ( pg_vec , order , req -> tp_block_nr ) ; out : <S2SV_ModStart> sk ) ; <S2SV_ModEnd> return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10010\n\n```\nCWE-264 static Channel * server_request_direct_streamlocal ( void ) { Channel * c = NULL ; char * target , * originator ; u_short originator_port ; target = packet_get_string ( NULL ) ; originator = packet_get_string ( NULL ) ; originator_port = packet_get_int ( ) ; packet_check_eom ( ) ; debug ( \"server_request_direct_streamlocal:<S2SV_blank>originator<S2SV_blank>%s<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>target<S2SV_blank>%s\" , originator , originator_port , target ) ; if ( ( options . allow_streamlocal_forwarding & FORWARD_LOCAL ) != 0 && <S2SV_StartBug> ! no_port_forwarding_flag && ! options . disable_forwarding ) { <S2SV_EndBug> c = channel_connect_to_path ( target , \"direct-streamlocal@openssh.com\" , \"direct-streamlocal\" ) ; } else { logit ( \"refused<S2SV_blank>streamlocal<S2SV_blank>port<S2SV_blank>forward:<S2SV_blank>\" \"originator<S2SV_blank>%s<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>target<S2SV_blank>%s\" , originator , originator_port , target ) ; } free ( originator ) ; free ( target ) ; return c ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> options . disable_forwarding && use_privsep\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t validate_config ( vpx_codec_alg_priv_t * ctx , const vpx_codec_enc_cfg_t * cfg , const struct vp9_extracfg * extra_cfg ) { RANGE_CHECK ( cfg , g_w , 1 , 65535 ) ; RANGE_CHECK ( cfg , g_h , 1 , 65535 ) ; RANGE_CHECK ( cfg , g_timebase . den , 1 , 1000000000 ) ; RANGE_CHECK ( cfg , g_timebase . num , 1 , cfg -> g_timebase . den ) ; RANGE_CHECK_HI ( cfg , g_profile , 3 ) ; RANGE_CHECK_HI ( cfg , rc_max_quantizer , 63 ) ; RANGE_CHECK_HI ( cfg , rc_min_quantizer , cfg -> rc_max_quantizer ) ; RANGE_CHECK_BOOL ( extra_cfg , lossless ) ; RANGE_CHECK ( extra_cfg , aq_mode , 0 , AQ_MODE_COUNT - 1 ) ; RANGE_CHECK ( extra_cfg , frame_periodic_boost , 0 , 1 ) ; RANGE_CHECK_HI ( cfg , g_threads , 64 ) ; RANGE_CHECK_HI ( cfg , g_lag_in_frames , MAX_LAG_BUFFERS ) ; RANGE_CHECK ( cfg , rc_end_usage , VPX_VBR , VPX_Q ) ; <S2SV_StartBug> RANGE_CHECK_HI ( cfg , rc_undershoot_pct , 1000 ) ; <S2SV_EndBug> <S2SV_StartBug> RANGE_CHECK_HI ( cfg , rc_overshoot_pct , 1000 ) ; <S2SV_EndBug> RANGE_CHECK_HI ( cfg , rc_2pass_vbr_bias_pct , 100 ) ; RANGE_CHECK ( cfg , kf_mode , VPX_KF_DISABLED , VPX_KF_AUTO ) ; RANGE_CHECK_BOOL ( cfg , rc_resize_allowed ) ; RANGE_CHECK_HI ( cfg , rc_dropframe_thresh , 100 ) ; RANGE_CHECK_HI ( cfg , rc_resize_up_thresh , 100 ) ; RANGE_CHECK_HI ( cfg , rc_resize_down_thresh , 100 ) ; RANGE_CHECK ( cfg , g_pass , VPX_RC_ONE_PASS , VPX_RC_LAST_PASS ) ; <S2SV_StartBug> RANGE_CHECK ( cfg , ss_number_layers , 1 , VPX_SS_MAX_LAYERS ) ; <S2SV_EndBug> RANGE_CHECK ( cfg , ts_number_layers , 1 , VPX_TS_MAX_LAYERS ) ; <S2SV_StartBug> if ( cfg -> ts_number_layers > 1 ) { <S2SV_EndBug> <S2SV_StartBug> unsigned int i ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 1 ; i < cfg -> ts_number_layers ; ++ i ) <S2SV_EndBug> if ( cfg -> ts_target_bitrate [ i ] < cfg -> ts_target_bitrate [ i - 1 ] ) <S2SV_StartBug> ERROR ( \"ts_target_bitrate<S2SV_blank>entries<S2SV_blank>are<S2SV_blank>not<S2SV_blank>increasing\" ) ; <S2SV_EndBug> RANGE_CHECK ( cfg , ts_rate_decimator [ cfg -> ts_number_layers - 1 ] , 1 , 1 ) ; <S2SV_StartBug> for ( i = cfg -> ts_number_layers - 2 ; i > 0 ; -- i ) <S2SV_EndBug> <S2SV_StartBug> if ( cfg -> ts_rate_decimator [ i - 1 ] != 2 * cfg -> ts_rate_decimator [ i ] ) <S2SV_EndBug> <S2SV_StartBug> ERROR ( \"ts_rate_decimator<S2SV_blank>factors<S2SV_blank>are<S2SV_blank>not<S2SV_blank>powers<S2SV_blank>of<S2SV_blank>2\" ) ; <S2SV_EndBug> } if ( cfg -> kf_mode != VPX_KF_DISABLED && cfg -> kf_min_dist != cfg -> kf_max_dist && cfg -> kf_min_dist > 0 ) ERROR ( \"kf_min_dist<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>auto<S2SV_blank>mode,<S2SV_blank>use<S2SV_blank>0<S2SV_blank>\" \"or<S2SV_blank>kf_max_dist<S2SV_blank>instead.\" ) ; <S2SV_StartBug> RANGE_CHECK_BOOL ( extra_cfg , enable_auto_alt_ref ) ; <S2SV_EndBug> <S2SV_StartBug> RANGE_CHECK ( extra_cfg , cpu_used , - 16 , 16 ) ; <S2SV_EndBug> RANGE_CHECK_HI ( extra_cfg , noise_sensitivity , 6 ) ; RANGE_CHECK ( extra_cfg , tile_columns , 0 , 6 ) ; RANGE_CHECK ( extra_cfg , tile_rows , 0 , 2 ) ; RANGE_CHECK_HI ( extra_cfg , sharpness , 7 ) ; RANGE_CHECK ( extra_cfg , arnr_max_frames , 0 , 15 ) ; RANGE_CHECK_HI ( extra_cfg , arnr_strength , 6 ) ; <S2SV_StartBug> RANGE_CHECK ( extra_cfg , arnr_type , 1 , 3 ) ; <S2SV_EndBug> <S2SV_StartBug> RANGE_CHECK ( extra_cfg , cq_level , 0 , 63 ) ; <S2SV_EndBug> if ( extra_cfg -> tuning == VP8_TUNE_SSIM ) ERROR ( \"Option<S2SV_blank>--tune=ssim<S2SV_blank>is<S2SV_blank>not<S2SV_blank>currently<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>VP9.\" ) ; if ( cfg -> g_pass == VPX_RC_LAST_PASS ) { <S2SV_StartBug> size_t packet_sz = sizeof ( FIRSTPASS_STATS ) ; <S2SV_EndBug> <S2SV_StartBug> int n_packets = ( int ) ( cfg -> rc_twopass_stats_in . sz / packet_sz ) ; <S2SV_EndBug> const FIRSTPASS_STATS * stats ; if ( cfg -> rc_twopass_stats_in . buf == NULL ) ERROR ( \"rc_twopass_stats_in.buf<S2SV_blank>not<S2SV_blank>set.\" ) ; if ( cfg -> rc_twopass_stats_in . sz % packet_sz ) ERROR ( \"rc_twopass_stats_in.sz<S2SV_blank>indicates<S2SV_blank>truncated<S2SV_blank>packet.\" ) ; <S2SV_StartBug> if ( cfg -> ss_number_layers > 1 ) { <S2SV_EndBug> int i ; unsigned int n_packets_per_layer [ VPX_SS_MAX_LAYERS ] = { 0 } ; stats = cfg -> rc_twopass_stats_in . buf ; for ( i = 0 ; i < n_packets ; ++ i ) { const int layer_id = ( int ) stats [ i ] . spatial_layer_id ; if ( layer_id >= 0 && layer_id < ( int ) cfg -> ss_number_layers ) { ++ n_packets_per_layer [ layer_id ] ; } } for ( i = 0 ; i < ( int ) cfg -> ss_number_layers ; ++ i ) { unsigned int layer_id ; if ( n_packets_per_layer [ i ] < 2 ) { ERROR ( \"rc_twopass_stats_in<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>two<S2SV_blank>packets<S2SV_blank>for<S2SV_blank>each<S2SV_blank>\" \"layer.\" ) ; } stats = ( const FIRSTPASS_STATS * ) cfg -> rc_twopass_stats_in . buf + n_packets - cfg -> ss_number_layers + i ; layer_id = ( int ) stats -> spatial_layer_id ; if ( layer_id >= cfg -> ss_number_layers <S2SV_StartBug> || ( int ) ( stats -> count + 0.5 ) != n_packets_per_layer [ layer_id ] - 1 ) <S2SV_EndBug> ERROR ( \"rc_twopass_stats_in<S2SV_blank>missing<S2SV_blank>EOS<S2SV_blank>stats<S2SV_blank>packet\" ) ; } } else { if ( cfg -> rc_twopass_stats_in . sz < 2 * packet_sz ) ERROR ( \"rc_twopass_stats_in<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>two<S2SV_blank>packets.\" ) ; stats = ( const FIRSTPASS_STATS * ) cfg -> rc_twopass_stats_in . buf + n_packets - 1 ; if ( ( int ) ( stats -> count + 0.5 ) != n_packets - 1 ) ERROR ( \"rc_twopass_stats_in<S2SV_blank>missing<S2SV_blank>EOS<S2SV_blank>stats<S2SV_blank>packet\" ) ; } } <S2SV_StartBug> if ( cfg -> g_profile <= ( unsigned int ) PROFILE_1 && <S2SV_EndBug> <S2SV_StartBug> extra_cfg -> bit_depth > BITS_8 ) <S2SV_EndBug> ERROR ( \"High<S2SV_blank>bit-depth<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>profile<S2SV_blank><<S2SV_blank>2\" ) ; <S2SV_StartBug> if ( cfg -> g_profile > ( unsigned int ) PROFILE_1 && <S2SV_EndBug> <S2SV_StartBug> extra_cfg -> bit_depth == BITS_8 ) <S2SV_EndBug> ERROR ( \"Bit-depth<S2SV_blank>8<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>profile<S2SV_blank>><S2SV_blank>1\" ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , rc_undershoot_pct , 100 <S2SV_ModEnd> ) ; RANGE_CHECK_HI <S2SV_ModStart> , rc_overshoot_pct , 100 <S2SV_ModEnd> ) ; RANGE_CHECK_HI <S2SV_ModStart> ; RANGE_CHECK ( extra_cfg , min_gf_interval , 0 , ( MAX_LAG_BUFFERS - 1 ) ) ; RANGE_CHECK ( extra_cfg , max_gf_interval , 0 , ( MAX_LAG_BUFFERS - 1 ) ) ; if ( extra_cfg -> max_gf_interval > 0 ) { RANGE_CHECK ( extra_cfg , max_gf_interval , 2 , ( MAX_LAG_BUFFERS - 1 ) ) ; } if ( extra_cfg -> min_gf_interval > 0 && extra_cfg -> max_gf_interval > 0 ) { RANGE_CHECK ( extra_cfg , max_gf_interval , extra_cfg -> min_gf_interval , ( MAX_LAG_BUFFERS - 1 ) ) ; } if ( cfg -> rc_resize_allowed == 1 ) { RANGE_CHECK ( cfg , rc_scaled_width , 0 , cfg -> g_w ) ; RANGE_CHECK ( cfg , rc_scaled_height , 0 , cfg -> g_h ) ; } RANGE_CHECK ( <S2SV_ModStart> ( cfg -> ss_number_layers * cfg -> ts_number_layers > VPX_MAX_LAYERS ) ERROR ( \"ss_number_layers<S2SV_blank>*<S2SV_blank>ts_number_layers<S2SV_blank>is<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\" ) ; if ( cfg -> ts_number_layers > <S2SV_ModEnd> 1 ) { <S2SV_ModStart> { unsigned int sl , tl <S2SV_ModEnd> ; for ( <S2SV_ModStart> ; for ( sl = 1 ; sl <S2SV_ModEnd> < cfg -> <S2SV_ModStart> < cfg -> ss_number_layers ; ++ sl ) { for ( tl = 1 ; tl < cfg -> <S2SV_ModStart> ts_number_layers ; ++ tl ) { const int layer = LAYER_IDS_TO_IDX ( sl , tl , cfg -> ts_number_layers ) ; if ( cfg -> layer_target_bitrate [ layer ] < cfg -> layer_target_bitrate [ layer <S2SV_ModEnd> - 1 ] <S2SV_ModStart> \"ts_target_bitrate<S2SV_blank>entries<S2SV_blank>are<S2SV_blank>not<S2SV_blank>increasing\" ) ; } } <S2SV_ModStart> ; for ( tl <S2SV_ModEnd> = cfg -> <S2SV_ModStart> - 2 ; tl <S2SV_ModEnd> > 0 ; <S2SV_ModStart> 0 ; -- tl <S2SV_ModEnd> ) if ( <S2SV_ModStart> -> ts_rate_decimator [ tl <S2SV_ModEnd> - 1 ] <S2SV_ModStart> -> ts_rate_decimator [ tl ] ) ERROR ( \"ts_rate_decimator<S2SV_blank>factors<S2SV_blank>are<S2SV_blank>not<S2SV_blank>powers<S2SV_blank>of<S2SV_blank>2\" ) ; } # if CONFIG_SPATIAL_SVC if ( ( cfg -> ss_number_layers > 1 || cfg -> ts_number_layers > 1 ) && cfg -> g_pass == VPX_RC_LAST_PASS ) { unsigned int i , alt_ref_sum = 0 ; for ( i = 0 ; i < cfg -> ss_number_layers ; ++ i ) { if ( cfg -> ss_enable_auto_alt_ref [ <S2SV_ModStart> i ] ) ++ alt_ref_sum ; } if ( alt_ref_sum > REF_FRAMES - cfg -> ss_number_layers ) ERROR ( \"Not<S2SV_blank>enough<S2SV_blank>ref<S2SV_blank>buffers<S2SV_blank>for<S2SV_blank>svc<S2SV_blank>alt<S2SV_blank>ref<S2SV_blank>frames\" ) ; if ( cfg -> ss_number_layers * cfg -> ts_number_layers > 3 && cfg -> g_error_resilient == 0 ) ERROR ( \"Multiple<S2SV_blank>frame<S2SV_blank>context<S2SV_blank>are<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>for<S2SV_blank>more<S2SV_blank>than<S2SV_blank>3<S2SV_blank>layers\" ) ; } # endif <S2SV_ModEnd> if ( cfg <S2SV_ModStart> \"or<S2SV_blank>kf_max_dist<S2SV_blank>instead.\" ) ; RANGE_CHECK <S2SV_ModEnd> ( extra_cfg , <S2SV_ModStart> extra_cfg , enable_auto_alt_ref , 0 , 2 <S2SV_ModStart> cpu_used , - 8 , 8 <S2SV_ModEnd> ) ; RANGE_CHECK_HI <S2SV_ModStart> ( extra_cfg , <S2SV_ModEnd> cq_level , 0 <S2SV_ModStart> 0 , 63 ) ; RANGE_CHECK ( cfg , g_bit_depth , VPX_BITS_8 , VPX_BITS_12 ) ; RANGE_CHECK ( cfg , g_input_bit_depth , 8 , 12 ) ; RANGE_CHECK ( extra_cfg , content , VP9E_CONTENT_DEFAULT , VP9E_CONTENT_INVALID - 1 <S2SV_ModStart> VPX_RC_LAST_PASS ) { const <S2SV_ModStart> FIRSTPASS_STATS ) ; const <S2SV_ModStart> cfg -> ss_number_layers > 1 || cfg -> ts_number_layers <S2SV_ModStart> ss_number_layers || ( unsigned <S2SV_ModStart> ; } } # if ! CONFIG_VP9_HIGHBITDEPTH if ( cfg -> g_profile > ( unsigned int ) PROFILE_1 ) { ERROR ( \"Profile<S2SV_blank>><S2SV_blank>1<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>this<S2SV_blank>build<S2SV_blank>configuration\" ) ; } # endif <S2SV_ModStart> ) PROFILE_1 && cfg -> g_bit_depth > VPX_BITS_8 ) { ERROR ( \"Codec<S2SV_blank>high<S2SV_blank>bit-depth<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>profile<S2SV_blank><<S2SV_blank>2\" ) ; } <S2SV_ModEnd> if ( cfg <S2SV_ModStart> cfg -> g_profile <= <S2SV_ModEnd> ( unsigned int <S2SV_ModStart> ) PROFILE_1 && cfg -> g_input_bit_depth > 8 ) { ERROR ( \"Source<S2SV_blank>high<S2SV_blank>bit-depth<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>profile<S2SV_blank><<S2SV_blank>2\" ) ; } if ( cfg -> g_profile > ( unsigned int ) PROFILE_1 && cfg -> g_bit_depth == VPX_BITS_8 ) { ERROR ( \"Codec<S2SV_blank>bit-depth<S2SV_blank>8<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>profile<S2SV_blank>><S2SV_blank>1\" ) ; } RANGE_CHECK ( extra_cfg , color_space , VPX_CS_UNKNOWN , VPX_CS_SRGB <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_replace_fw ( unsigned long arg ) <S2SV_EndBug> { struct mpt_ioctl_replace_fw __user * uarg = ( void __user * ) arg ; struct mpt_ioctl_replace_fw karg ; <S2SV_StartBug> MPT_ADAPTER * ioc ; <S2SV_EndBug> int iocnum ; int newFwSize ; if ( copy_from_user ( & karg , uarg , sizeof ( struct mpt_ioctl_replace_fw ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_replace_fw<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>mpt_ioctl_replace_fw<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uarg ) ; <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> } if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || ( ioc == NULL ) ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_replace_fw()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; } dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"mptctl_replace_fw<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; if ( ioc -> cached_fw == NULL ) return 0 ; mpt_free_fw_memory ( ioc ) ; newFwSize = ALIGN ( karg . newImageSize , 4 ) ; mpt_alloc_fw_memory ( ioc , newFwSize ) ; if ( ioc -> cached_fw == NULL ) return - ENOMEM ; if ( copy_from_user ( ioc -> cached_fw , uarg -> newImage , newFwSize ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_replace_fw<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>mpt_ioctl_replace_fw<S2SV_blank>image<S2SV_blank>\" \"@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , uarg ) ; mpt_free_fw_memory ( ioc ) ; return - EFAULT ; } ioc -> facts . FWImageSize = newFwSize ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_replace_fw ( MPT_ADAPTER * ioc , <S2SV_ModStart> mpt_ioctl_replace_fw karg ; <S2SV_ModEnd> int newFwSize ; <S2SV_ModStart> return - EFAULT <S2SV_ModEnd> ; } dctlprintk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8_get_last_ref_frame ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctrl_id , va_list args ) { int * ref_info = va_arg ( args , int * ) ; if ( ref_info && ! ctx -> yv12_frame_buffers . use_frame_threads ) { VP8D_COMP * pbi = ( VP8D_COMP * ) ctx -> yv12_frame_buffers . pbi [ 0 ] ; VP8_COMMON * oci = & pbi -> common ; * ref_info = ( vp8dx_references_buffer ( oci , ALTREF_FRAME ) ? VP8_ALTR_FRAME : 0 ) | ( vp8dx_references_buffer ( oci , GOLDEN_FRAME ) ? VP8_GOLD_FRAME : 0 ) | ( vp8dx_references_buffer ( oci , LAST_FRAME ) ? VP8_LAST_FRAME : 0 ) ; return VPX_CODEC_OK ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3817\n\n```\nCWE-416 void comps_objrtree_unite ( COMPS_ObjRTree * rt1 , COMPS_ObjRTree * rt2 ) { COMPS_HSList * tmplist , * tmp_subnodes ; COMPS_HSListItem * it ; struct Pair { COMPS_HSList * subnodes ; char * key ; <S2SV_StartBug> char added ; <S2SV_EndBug> } * pair , * parent_pair ; pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = rt2 -> subnodes ; pair -> key = NULL ; tmplist = comps_hslist_create ( ) ; comps_hslist_init ( tmplist , NULL , NULL , & free ) ; comps_hslist_append ( tmplist , pair , 0 ) ; while ( tmplist -> first != NULL ) { it = tmplist -> first ; comps_hslist_remove ( tmplist , tmplist -> first ) ; tmp_subnodes = ( ( struct Pair * ) it -> data ) -> subnodes ; parent_pair = ( struct Pair * ) it -> data ; free ( it ) ; for ( it = tmp_subnodes -> first ; it != NULL ; it = it -> next ) { pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = ( ( COMPS_ObjRTreeData * ) it -> data ) -> subnodes ; if ( parent_pair -> key != NULL ) { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> key ) + strlen ( parent_pair -> key ) + 1 ) ) ; memcpy ( pair -> key , parent_pair -> key , sizeof ( char ) * strlen ( parent_pair -> key ) ) ; memcpy ( pair -> key + strlen ( parent_pair -> key ) , ( ( COMPS_ObjRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } else { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> key ) + 1 ) ) ; memcpy ( pair -> key , ( ( COMPS_ObjRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } if ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> data != NULL ) { comps_objrtree_set ( rt1 , pair -> key , ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> data ) ) ; } if ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } free ( parent_pair -> key ) ; free ( parent_pair ) ; } comps_hslist_destroy ( & tmplist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * key ; <S2SV_ModEnd> } * pair\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15923\n\n```\nCWE-476 static int pcd_detect ( void ) { char id [ 18 ] ; int k , unit ; struct pcd_unit * cd ; printk ( \"%s:<S2SV_blank>%s<S2SV_blank>version<S2SV_blank>%s,<S2SV_blank>major<S2SV_blank>%d,<S2SV_blank>nice<S2SV_blank>%d\\\\n\" , name , name , PCD_VERSION , major , nice ) ; par_drv = pi_register_driver ( name ) ; if ( ! par_drv ) { pr_err ( \"failed<S2SV_blank>to<S2SV_blank>register<S2SV_blank>%s<S2SV_blank>driver\\\\n\" , name ) ; return - 1 ; } k = 0 ; if ( pcd_drive_count == 0 ) { cd = pcd ; if ( pi_init ( cd -> pi , 1 , - 1 , - 1 , - 1 , - 1 , - 1 , pcd_buffer , PI_PCD , verbose , cd -> name ) ) { if ( ! pcd_probe ( cd , - 1 , id ) && cd -> disk ) { cd -> present = 1 ; k ++ ; } else pi_release ( cd -> pi ) ; } } else { for ( unit = 0 , cd = pcd ; unit < PCD_UNITS ; unit ++ , cd ++ ) { int * conf = * drives [ unit ] ; if ( ! conf [ D_PRT ] ) continue ; if ( ! pi_init ( cd -> pi , 0 , conf [ D_PRT ] , conf [ D_MOD ] , conf [ D_UNI ] , conf [ D_PRO ] , conf [ D_DLY ] , pcd_buffer , PI_PCD , verbose , cd -> name ) ) continue ; if ( ! pcd_probe ( cd , conf [ D_SLV ] , id ) && cd -> disk ) { cd -> present = 1 ; k ++ ; } else pi_release ( cd -> pi ) ; } } if ( k ) return 0 ; printk ( \"%s:<S2SV_blank>No<S2SV_blank>CD-ROM<S2SV_blank>drive<S2SV_blank>found\\\\n\" , name ) ; for ( unit = 0 , cd = pcd ; unit < PCD_UNITS ; unit ++ , cd ++ ) { <S2SV_StartBug> blk_cleanup_queue ( cd -> disk -> queue ) ; <S2SV_EndBug> cd -> disk -> queue = NULL ; blk_mq_free_tag_set ( & cd -> tag_set ) ; put_disk ( cd -> disk ) ; } pi_unregister_driver ( par_drv ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { if ( ! cd -> disk ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5601\n\n```\nCWE-125 static int lha_read_file_header_1 ( struct archive_read * a , struct lha * lha ) { const unsigned char * p ; size_t extdsize ; int i , err , err2 ; int namelen , padding ; unsigned char headersum , sum_calculated ; err = ARCHIVE_OK ; if ( ( p = __archive_read_ahead ( a , H1_FIXED_SIZE , NULL ) ) == NULL ) return ( truncated_error ( a ) ) ; lha -> header_size = p [ H1_HEADER_SIZE_OFFSET ] + 2 ; headersum = p [ H1_HEADER_SUM_OFFSET ] ; lha -> compsize = archive_le32dec ( p + H1_COMP_SIZE_OFFSET ) ; lha -> origsize = archive_le32dec ( p + H1_ORIG_SIZE_OFFSET ) ; lha -> mtime = lha_dos_time ( p + H1_DOS_TIME_OFFSET ) ; namelen = p [ H1_NAME_LEN_OFFSET ] ; padding = ( ( int ) lha -> header_size ) - H1_FIXED_SIZE - namelen ; if ( namelen > 230 || padding < 0 ) goto invalid ; if ( ( p = __archive_read_ahead ( a , lha -> header_size , NULL ) ) == NULL ) return ( truncated_error ( a ) ) ; for ( i = 0 ; i < namelen ; i ++ ) { if ( p [ i + H1_FILE_NAME_OFFSET ] == 0xff ) goto invalid ; } archive_strncpy ( & lha -> filename , p + H1_FILE_NAME_OFFSET , namelen ) ; lha -> crc = archive_le16dec ( p + H1_FILE_NAME_OFFSET + namelen ) ; lha -> setflag |= CRC_IS_SET ; sum_calculated = lha_calcsum ( 0 , p , 2 , lha -> header_size - 2 ) ; __archive_read_consume ( a , lha -> header_size - 2 ) ; err2 = lha_read_file_extended_header ( a , lha , NULL , 2 , ( size_t ) ( lha -> compsize + 2 ) , & extdsize ) ; if ( err2 < ARCHIVE_WARN ) return ( err2 ) ; if ( err2 < err ) err = err2 ; lha -> compsize -= extdsize - 2 ; <S2SV_StartBug> if ( sum_calculated != headersum ) { <S2SV_EndBug> archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"LHa<S2SV_blank>header<S2SV_blank>sum<S2SV_blank>error\" ) ; return ( ARCHIVE_FATAL ) ; } return ( err ) ; invalid : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>LHa<S2SV_blank>header\" ) ; return ( ARCHIVE_FATAL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lha -> compsize < 0 ) goto invalid ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static inline int accept_server_socket ( int s ) { struct sockaddr_un client_address ; socklen_t clen ; <S2SV_StartBug> int fd = accept ( s , ( struct sockaddr * ) & client_address , & clen ) ; <S2SV_EndBug> APPL_TRACE_DEBUG ( \"accepted<S2SV_blank>fd:%d<S2SV_blank>for<S2SV_blank>server<S2SV_blank>fd:%d\" , fd , s ) ; return fd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int fd = TEMP_FAILURE_RETRY ( <S2SV_ModStart> , & clen )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8543\n\n```\nCWE-000 static int irda_create ( struct net * net , struct socket * sock , int protocol , int kern ) { struct sock * sk ; struct irda_sock * self ; <S2SV_StartBug> if ( net != & init_net ) <S2SV_EndBug> return - EAFNOSUPPORT ; switch ( sock -> type ) { case SOCK_STREAM : case SOCK_SEQPACKET : case SOCK_DGRAM : break ; default : return - ESOCKTNOSUPPORT ; } sk = sk_alloc ( net , PF_IRDA , GFP_KERNEL , & irda_proto , kern ) ; if ( sk == NULL ) return - ENOMEM ; self = irda_sk ( sk ) ; pr_debug ( \"%s()<S2SV_blank>:<S2SV_blank>self<S2SV_blank>is<S2SV_blank>%p\\\\n\" , __func__ , self ) ; init_waitqueue_head ( & self -> query_wait ) ; switch ( sock -> type ) { case SOCK_STREAM : sock -> ops = & irda_stream_ops ; self -> max_sdu_size_rx = TTP_SAR_DISABLE ; break ; case SOCK_SEQPACKET : sock -> ops = & irda_seqpacket_ops ; self -> max_sdu_size_rx = TTP_SAR_UNBOUND ; break ; case SOCK_DGRAM : switch ( protocol ) { # ifdef CONFIG_IRDA_ULTRA case IRDAPROTO_ULTRA : sock -> ops = & irda_ultra_ops ; self -> max_data_size = ULTRA_MAX_DATA - LMP_PID_HEADER ; self -> max_header_size = IRDA_MAX_HEADER + LMP_PID_HEADER ; break ; # endif case IRDAPROTO_UNITDATA : sock -> ops = & irda_dgram_ops ; self -> max_sdu_size_rx = TTP_SAR_UNBOUND ; break ; default : sk_free ( sk ) ; return - ESOCKTNOSUPPORT ; } break ; default : sk_free ( sk ) ; return - ESOCKTNOSUPPORT ; } sock_init_data ( sock , sk ) ; sk -> sk_family = PF_IRDA ; sk -> sk_protocol = protocol ; self -> ckey = irlmp_register_client ( 0 , NULL , NULL , NULL ) ; self -> mask . word = 0xffff ; self -> rx_flow = self -> tx_flow = FLOW_START ; self -> nslots = DISCOVERY_DEFAULT_SLOTS ; self -> daddr = DEV_ADDR_ANY ; self -> saddr = 0x0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( protocol < 0 || protocol > SK_PROTOCOL_MAX ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-444(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7670\n\n```\nCWE-444 void request_init ( VALUE mod ) { req_class = rb_define_class_under ( mod , \"Request\" , rb_cObject ) ; rb_define_method ( req_class , \"to_s\" , to_s , 0 ) ; rb_define_method ( req_class , \"to_h\" , to_h , 0 ) ; rb_define_method ( req_class , \"environment\" , to_h , 0 ) ; rb_define_method ( req_class , \"env\" , to_h , 0 ) ; rb_define_method ( req_class , \"request_method\" , method , 0 ) ; rb_define_method ( req_class , \"script_name\" , script_name , 0 ) ; rb_define_method ( req_class , \"path_info\" , path_info , 0 ) ; rb_define_method ( req_class , \"query_string\" , query_string , 0 ) ; rb_define_method ( req_class , \"server_name\" , server_name , 0 ) ; rb_define_method ( req_class , \"server_port\" , server_port , 0 ) ; <S2SV_StartBug> rb_define_method ( req_class , \"rack_version\" , rack_version , 0 ) ; <S2SV_EndBug> rb_define_method ( req_class , \"rack_url_scheme\" , rack_url_scheme , 0 ) ; rb_define_method ( req_class , \"rack_input\" , rack_input , 0 ) ; rb_define_method ( req_class , \"rack_errors\" , rack_errors , 0 ) ; rb_define_method ( req_class , \"rack_multithread\" , rack_multithread , 0 ) ; rb_define_method ( req_class , \"rack_multiprocess\" , rack_multiprocess , 0 ) ; rb_define_method ( req_class , \"rack_run_once\" , rack_run_once , 0 ) ; rb_define_method ( req_class , \"rack_upgrade?\" , rack_upgrade , 0 ) ; rb_define_method ( req_class , \"headers\" , headers , 0 ) ; rb_define_method ( req_class , \"body\" , body , 0 ) ; rb_define_method ( req_class , \"rack_logger\" , rack_logger , 0 ) ; rb_define_method ( req_class , \"call\" , call , 0 ) ; new_id = rb_intern ( \"new\" ) ; rack_version_val_val = rb_ary_new ( ) ; rb_ary_push ( rack_version_val_val , INT2NUM ( 1 ) ) ; rb_ary_push ( rack_version_val_val , INT2NUM ( 3 ) ) ; rb_gc_register_address ( & rack_version_val_val ) ; stringio_class = rb_const_get ( rb_cObject , rb_intern ( \"StringIO\" ) ) ; connect_val = rb_str_new_cstr ( \"CONNECT\" ) ; rb_gc_register_address ( & connect_val ) ; content_length_val = rb_str_new_cstr ( \"CONTENT_LENGTH\" ) ; rb_gc_register_address ( & content_length_val ) ; content_type_val = rb_str_new_cstr ( \"CONTENT_TYPE\" ) ; rb_gc_register_address ( & content_type_val ) ; delete_val = rb_str_new_cstr ( \"DELETE\" ) ; rb_gc_register_address ( & delete_val ) ; early_hints_val = rb_str_new_cstr ( \"early_hints\" ) ; rb_gc_register_address ( & early_hints_val ) ; empty_val = rb_str_new_cstr ( \"\" ) ; rb_gc_register_address ( & empty_val ) ; get_val = rb_str_new_cstr ( \"GET\" ) ; rb_gc_register_address ( & get_val ) ; head_val = rb_str_new_cstr ( \"HEAD\" ) ; rb_gc_register_address ( & head_val ) ; http_val = rb_str_new_cstr ( \"http\" ) ; rb_gc_register_address ( & http_val ) ; https_val = rb_str_new_cstr ( \"https\" ) ; rb_gc_register_address ( & https_val ) ; options_val = rb_str_new_cstr ( \"OPTIONS\" ) ; rb_gc_register_address ( & options_val ) ; patch_val = rb_str_new_cstr ( \"PATCH\" ) ; rb_gc_register_address ( & patch_val ) ; path_info_val = rb_str_new_cstr ( \"PATH_INFO\" ) ; rb_gc_register_address ( & path_info_val ) ; post_val = rb_str_new_cstr ( \"POST\" ) ; rb_gc_register_address ( & post_val ) ; put_val = rb_str_new_cstr ( \"PUT\" ) ; rb_gc_register_address ( & put_val ) ; query_string_val = rb_str_new_cstr ( \"QUERY_STRING\" ) ; rb_gc_register_address ( & query_string_val ) ; rack_errors_val = rb_str_new_cstr ( \"rack.errors\" ) ; rb_gc_register_address ( & rack_errors_val ) ; rack_hijack_io_val = rb_str_new_cstr ( \"rack.hijack_io\" ) ; rb_gc_register_address ( & rack_hijack_io_val ) ; rack_hijack_val = rb_str_new_cstr ( \"rack.hijack\" ) ; rb_gc_register_address ( & rack_hijack_val ) ; rack_hijackq_val = rb_str_new_cstr ( \"rack.hijack?\" ) ; rb_gc_register_address ( & rack_hijackq_val ) ; rack_input_val = rb_str_new_cstr ( \"rack.input\" ) ; rb_gc_register_address ( & rack_input_val ) ; rack_logger_val = rb_str_new_cstr ( \"rack.logger\" ) ; rb_gc_register_address ( & rack_logger_val ) ; rack_multiprocess_val = rb_str_new_cstr ( \"rack.multiprocess\" ) ; rb_gc_register_address ( & rack_multiprocess_val ) ; rack_multithread_val = rb_str_new_cstr ( \"rack.multithread\" ) ; rb_gc_register_address ( & rack_multithread_val ) ; rack_run_once_val = rb_str_new_cstr ( \"rack.run_once\" ) ; rb_gc_register_address ( & rack_run_once_val ) ; rack_upgrade_val = rb_str_new_cstr ( \"rack.upgrade?\" ) ; rb_gc_register_address ( & rack_upgrade_val ) ; rack_url_scheme_val = rb_str_new_cstr ( \"rack.url_scheme\" ) ; rb_gc_register_address ( & rack_url_scheme_val ) ; <S2SV_StartBug> rack_version_val = rb_str_new_cstr ( \"rack.version\" ) ; rb_gc_register_address ( & rack_version_val ) ; <S2SV_EndBug> request_method_val = rb_str_new_cstr ( \"REQUEST_METHOD\" ) ; rb_gc_register_address ( & request_method_val ) ; script_name_val = rb_str_new_cstr ( \"SCRIPT_NAME\" ) ; rb_gc_register_address ( & script_name_val ) ; server_name_val = rb_str_new_cstr ( \"SERVER_NAME\" ) ; rb_gc_register_address ( & server_name_val ) ; server_port_val = rb_str_new_cstr ( \"SERVER_PORT\" ) ; rb_gc_register_address ( & server_port_val ) ; slash_val = rb_str_new_cstr ( \"/\" ) ; rb_gc_register_address ( & slash_val ) ; sse_sym = ID2SYM ( rb_intern ( \"sse\" ) ) ; rb_gc_register_address ( & sse_sym ) ; websocket_sym = ID2SYM ( rb_intern ( \"websocket\" ) ) ; rb_gc_register_address ( & websocket_sym ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( req_class , \"remote_addr\" , remote_addr , 0 ) ; rb_define_method ( req_class , <S2SV_ModStart> ( & rack_version_val ) ; remote_addr_val = rb_str_new_cstr ( \"REMOTE_ADDR\" ) ; rb_gc_register_address ( & remote_addr_val\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void btif_fetch_local_bdaddr ( bt_bdaddr_t * local_addr ) { char val [ PROPERTY_VALUE_MAX ] = { 0 } ; uint8_t valid_bda = FALSE ; int val_size = 0 ; const uint8_t null_bdaddr [ BD_ADDR_LEN ] = { 0 , 0 , 0 , 0 , 0 , 0 } ; if ( property_get ( PROPERTY_BT_BDADDR_PATH , val , NULL ) ) { int addr_fd ; BTIF_TRACE_DEBUG ( \"%s,<S2SV_blank>local<S2SV_blank>bdaddr<S2SV_blank>is<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%s\" , __func__ , val ) ; <S2SV_StartBug> if ( ( addr_fd = open ( val , O_RDONLY ) ) != - 1 ) <S2SV_EndBug> { memset ( val , 0 , sizeof ( val ) ) ; <S2SV_StartBug> read ( addr_fd , val , FACTORY_BT_BDADDR_STORAGE_LEN ) ; <S2SV_EndBug> if ( ( string_to_bdaddr ( val , local_addr ) ) && ( memcmp ( local_addr -> address , null_bdaddr , BD_ADDR_LEN ) != 0 ) ) { valid_bda = TRUE ; BTIF_TRACE_DEBUG ( \"%s:<S2SV_blank>Got<S2SV_blank>Factory<S2SV_blank>BDA<S2SV_blank>%s\" , __func__ , val ) ; } close ( addr_fd ) ; } } if ( ! valid_bda ) { val_size = sizeof ( val ) ; if ( btif_config_get_str ( \"Adapter\" , \"Address\" , val , & val_size ) ) { string_to_bdaddr ( val , local_addr ) ; BTIF_TRACE_DEBUG ( \"local<S2SV_blank>bdaddr<S2SV_blank>from<S2SV_blank>bt_config.xml<S2SV_blank>is<S2SV_blank><S2SV_blank>%s\" , val ) ; return ; } } if ( ! valid_bda ) { valid_bda = btif_fetch_property ( PERSIST_BDADDR_PROPERTY , local_addr ) ; } if ( ! valid_bda ) { valid_bda = btif_fetch_property ( FACTORY_BT_ADDR_PROPERTY , local_addr ) ; } if ( ! valid_bda ) { bdstr_t bdstr ; srand ( ( unsigned int ) ( time ( 0 ) ) ) ; local_addr -> address [ 0 ] = 0x22 ; local_addr -> address [ 1 ] = 0x22 ; local_addr -> address [ 2 ] = ( uint8_t ) ( ( rand ( ) >> 8 ) & 0xFF ) ; local_addr -> address [ 3 ] = ( uint8_t ) ( ( rand ( ) >> 8 ) & 0xFF ) ; local_addr -> address [ 4 ] = ( uint8_t ) ( ( rand ( ) >> 8 ) & 0xFF ) ; local_addr -> address [ 5 ] = ( uint8_t ) ( ( rand ( ) >> 8 ) & 0xFF ) ; bdaddr_to_string ( local_addr , bdstr , sizeof ( bdstr ) ) ; BTIF_TRACE_DEBUG ( \"No<S2SV_blank>preset<S2SV_blank>BDA.<S2SV_blank>Generating<S2SV_blank>BDA:<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>prop<S2SV_blank>%s\" , ( char * ) bdstr , PERSIST_BDADDR_PROPERTY ) ; if ( property_set ( PERSIST_BDADDR_PROPERTY , ( char * ) bdstr ) < 0 ) BTIF_TRACE_ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>random<S2SV_blank>BDA<S2SV_blank>in<S2SV_blank>prop<S2SV_blank>%s\" , PERSIST_BDADDR_PROPERTY ) ; } bdstr_t bdstr ; bdaddr_to_string ( local_addr , bdstr , sizeof ( bdstr ) ) ; val_size = sizeof ( val ) ; if ( btif_config_get_str ( \"Adapter\" , \"Address\" , val , & val_size ) ) { if ( strcmp ( bdstr , val ) == 0 ) { return ; } } btif_config_set_str ( \"Adapter\" , \"Address\" , bdstr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( addr_fd = TEMP_FAILURE_RETRY ( <S2SV_ModStart> val , O_RDONLY ) <S2SV_ModStart> ) ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> val , FACTORY_BT_BDADDR_STORAGE_LEN )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void calc_segtree_probs ( int * segcounts , vp9_prob * segment_tree_probs ) { <S2SV_EndBug> const int c01 = segcounts [ 0 ] + segcounts [ 1 ] ; const int c23 = segcounts [ 2 ] + segcounts [ 3 ] ; const int c45 = segcounts [ 4 ] + segcounts [ 5 ] ; const int c67 = segcounts [ 6 ] + segcounts [ 7 ] ; segment_tree_probs [ 0 ] = get_binary_prob ( c01 + c23 , c45 + c67 ) ; segment_tree_probs [ 1 ] = get_binary_prob ( c01 , c23 ) ; segment_tree_probs [ 2 ] = get_binary_prob ( c45 , c67 ) ; segment_tree_probs [ 3 ] = get_binary_prob ( segcounts [ 0 ] , segcounts [ 1 ] ) ; segment_tree_probs [ 4 ] = get_binary_prob ( segcounts [ 2 ] , segcounts [ 3 ] ) ; segment_tree_probs [ 5 ] = get_binary_prob ( segcounts [ 4 ] , segcounts [ 5 ] ) ; segment_tree_probs [ 6 ] = get_binary_prob ( segcounts [ 6 ] , segcounts [ 7 ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * segcounts , vpx_prob <S2SV_ModEnd> * segment_tree_probs )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 static int do_ipv6_setsockopt ( struct sock * sk , int level , int optname , char __user * optval , unsigned int optlen ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct net * net = sock_net ( sk ) ; int val , valbool ; int retv = - ENOPROTOOPT ; bool needs_rtnl = setsockopt_needs_rtnl ( optname ) ; if ( ! optval ) val = 0 ; else { if ( optlen >= sizeof ( int ) ) { if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; } else val = 0 ; } valbool = ( val != 0 ) ; if ( ip6_mroute_opt ( optname ) ) return ip6_mroute_setsockopt ( sk , optname , optval , optlen ) ; if ( needs_rtnl ) rtnl_lock ( ) ; lock_sock ( sk ) ; switch ( optname ) { case IPV6_ADDRFORM : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val == PF_INET ) { struct ipv6_txoptions * opt ; struct sk_buff * pktopt ; if ( sk -> sk_type == SOCK_RAW ) break ; if ( sk -> sk_protocol == IPPROTO_UDP || sk -> sk_protocol == IPPROTO_UDPLITE ) { struct udp_sock * up = udp_sk ( sk ) ; if ( up -> pending == AF_INET6 ) { retv = - EBUSY ; break ; } } else if ( sk -> sk_protocol != IPPROTO_TCP ) break ; if ( sk -> sk_state != TCP_ESTABLISHED ) { retv = - ENOTCONN ; break ; } if ( ipv6_only_sock ( sk ) || ! ipv6_addr_v4mapped ( & sk -> sk_v6_daddr ) ) { retv = - EADDRNOTAVAIL ; break ; } fl6_free_socklist ( sk ) ; ipv6_sock_mc_close ( sk ) ; sk_refcnt_debug_dec ( sk ) ; if ( sk -> sk_protocol == IPPROTO_TCP ) { struct inet_connection_sock * icsk = inet_csk ( sk ) ; local_bh_disable ( ) ; sock_prot_inuse_add ( net , sk -> sk_prot , - 1 ) ; sock_prot_inuse_add ( net , & tcp_prot , 1 ) ; local_bh_enable ( ) ; sk -> sk_prot = & tcp_prot ; icsk -> icsk_af_ops = & ipv4_specific ; sk -> sk_socket -> ops = & inet_stream_ops ; sk -> sk_family = PF_INET ; tcp_sync_mss ( sk , icsk -> icsk_pmtu_cookie ) ; } else { struct proto * prot = & udp_prot ; if ( sk -> sk_protocol == IPPROTO_UDPLITE ) prot = & udplite_prot ; local_bh_disable ( ) ; sock_prot_inuse_add ( net , sk -> sk_prot , - 1 ) ; sock_prot_inuse_add ( net , prot , 1 ) ; local_bh_enable ( ) ; sk -> sk_prot = prot ; sk -> sk_socket -> ops = & inet_dgram_ops ; sk -> sk_family = PF_INET ; } <S2SV_StartBug> opt = xchg ( & np -> opt , NULL ) ; <S2SV_EndBug> if ( opt ) <S2SV_StartBug> sock_kfree_s ( sk , opt , opt -> tot_len ) ; <S2SV_EndBug> pktopt = xchg ( & np -> pktoptions , NULL ) ; kfree_skb ( pktopt ) ; sk -> sk_destruct = inet_sock_destruct ; sk_refcnt_debug_inc ( sk ) ; module_put ( THIS_MODULE ) ; retv = 0 ; break ; } goto e_inval ; case IPV6_V6ONLY : if ( optlen < sizeof ( int ) || inet_sk ( sk ) -> inet_num ) goto e_inval ; sk -> sk_ipv6only = valbool ; retv = 0 ; break ; case IPV6_RECVPKTINFO : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxinfo = valbool ; retv = 0 ; break ; case IPV6_2292PKTINFO : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxoinfo = valbool ; retv = 0 ; break ; case IPV6_RECVHOPLIMIT : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxhlim = valbool ; retv = 0 ; break ; case IPV6_2292HOPLIMIT : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxohlim = valbool ; retv = 0 ; break ; case IPV6_RECVRTHDR : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . srcrt = valbool ; retv = 0 ; break ; case IPV6_2292RTHDR : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . osrcrt = valbool ; retv = 0 ; break ; case IPV6_RECVHOPOPTS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . hopopts = valbool ; retv = 0 ; break ; case IPV6_2292HOPOPTS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . ohopopts = valbool ; retv = 0 ; break ; case IPV6_RECVDSTOPTS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . dstopts = valbool ; retv = 0 ; break ; case IPV6_2292DSTOPTS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . odstopts = valbool ; retv = 0 ; break ; case IPV6_TCLASS : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val < - 1 || val > 0xff ) goto e_inval ; if ( val == - 1 ) val = 0 ; np -> tclass = val ; retv = 0 ; break ; case IPV6_RECVTCLASS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxtclass = valbool ; retv = 0 ; break ; case IPV6_FLOWINFO : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxflow = valbool ; retv = 0 ; break ; case IPV6_RECVPATHMTU : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxpmtu = valbool ; retv = 0 ; break ; case IPV6_TRANSPARENT : if ( valbool && ! ns_capable ( net -> user_ns , CAP_NET_ADMIN ) && ! ns_capable ( net -> user_ns , CAP_NET_RAW ) ) { retv = - EPERM ; break ; } if ( optlen < sizeof ( int ) ) goto e_inval ; inet_sk ( sk ) -> transparent = valbool ; retv = 0 ; break ; case IPV6_RECVORIGDSTADDR : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxorigdstaddr = valbool ; retv = 0 ; break ; case IPV6_HOPOPTS : case IPV6_RTHDRDSTOPTS : case IPV6_RTHDR : case IPV6_DSTOPTS : { struct ipv6_txoptions * opt ; if ( optlen == 0 ) optval = NULL ; else if ( ! optval ) goto e_inval ; else if ( optlen < sizeof ( struct ipv6_opt_hdr ) || optlen & 0x7 || optlen > 8 * 255 ) goto e_inval ; retv = - EPERM ; if ( optname != IPV6_RTHDR && ! ns_capable ( net -> user_ns , CAP_NET_RAW ) ) break ; <S2SV_StartBug> opt = ipv6_renew_options ( sk , np -> opt , optname , <S2SV_EndBug> ( struct ipv6_opt_hdr __user * ) optval , optlen ) ; if ( IS_ERR ( opt ) ) { retv = PTR_ERR ( opt ) ; break ; } retv = - EINVAL ; if ( optname == IPV6_RTHDR && opt && opt -> srcrt ) { struct ipv6_rt_hdr * rthdr = opt -> srcrt ; switch ( rthdr -> type ) { # if IS_ENABLED ( CONFIG_IPV6_MIP6 ) case IPV6_SRCRT_TYPE_2 : if ( rthdr -> hdrlen != 2 || rthdr -> segments_left != 1 ) goto sticky_done ; break ; # endif default : goto sticky_done ; } } retv = 0 ; opt = ipv6_update_options ( sk , opt ) ; sticky_done : if ( opt ) <S2SV_StartBug> sock_kfree_s ( sk , opt , opt -> tot_len ) ; <S2SV_EndBug> break ; } case IPV6_PKTINFO : { struct in6_pktinfo pkt ; if ( optlen == 0 ) goto e_inval ; else if ( optlen < sizeof ( struct in6_pktinfo ) || ! optval ) goto e_inval ; if ( copy_from_user ( & pkt , optval , sizeof ( struct in6_pktinfo ) ) ) { retv = - EFAULT ; break ; } if ( sk -> sk_bound_dev_if && pkt . ipi6_ifindex != sk -> sk_bound_dev_if ) goto e_inval ; np -> sticky_pktinfo . ipi6_ifindex = pkt . ipi6_ifindex ; np -> sticky_pktinfo . ipi6_addr = pkt . ipi6_addr ; retv = 0 ; break ; } case IPV6_2292PKTOPTIONS : { struct ipv6_txoptions * opt = NULL ; struct msghdr msg ; struct flowi6 fl6 ; int junk ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . flowi6_mark = sk -> sk_mark ; if ( optlen == 0 ) goto update ; retv = - EINVAL ; if ( optlen > 64 * 1024 ) break ; opt = sock_kmalloc ( sk , sizeof ( * opt ) + optlen , GFP_KERNEL ) ; retv = - ENOBUFS ; if ( ! opt ) break ; memset ( opt , 0 , sizeof ( * opt ) ) ; <S2SV_StartBug> opt -> tot_len = sizeof ( * opt ) + optlen ; <S2SV_EndBug> retv = - EFAULT ; if ( copy_from_user ( opt + 1 , optval , optlen ) ) goto done ; msg . msg_controllen = optlen ; msg . msg_control = ( void * ) ( opt + 1 ) ; retv = ip6_datagram_send_ctl ( net , sk , & msg , & fl6 , opt , & junk , & junk , & junk ) ; if ( retv ) goto done ; update : retv = 0 ; opt = ipv6_update_options ( sk , opt ) ; done : if ( opt ) <S2SV_StartBug> sock_kfree_s ( sk , opt , opt -> tot_len ) ; <S2SV_EndBug> break ; } case IPV6_UNICAST_HOPS : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val > 255 || val < - 1 ) goto e_inval ; np -> hop_limit = val ; retv = 0 ; break ; case IPV6_MULTICAST_HOPS : if ( sk -> sk_type == SOCK_STREAM ) break ; if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val > 255 || val < - 1 ) goto e_inval ; np -> mcast_hops = ( val == - 1 ? IPV6_DEFAULT_MCASTHOPS : val ) ; retv = 0 ; break ; case IPV6_MULTICAST_LOOP : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val != valbool ) goto e_inval ; np -> mc_loop = valbool ; retv = 0 ; break ; case IPV6_UNICAST_IF : { struct net_device * dev = NULL ; int ifindex ; if ( optlen != sizeof ( int ) ) goto e_inval ; ifindex = ( __force int ) ntohl ( ( __force __be32 ) val ) ; if ( ifindex == 0 ) { np -> ucast_oif = 0 ; retv = 0 ; break ; } dev = dev_get_by_index ( net , ifindex ) ; retv = - EADDRNOTAVAIL ; if ( ! dev ) break ; dev_put ( dev ) ; retv = - EINVAL ; if ( sk -> sk_bound_dev_if ) break ; np -> ucast_oif = ifindex ; retv = 0 ; break ; } case IPV6_MULTICAST_IF : if ( sk -> sk_type == SOCK_STREAM ) break ; if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val ) { struct net_device * dev ; if ( sk -> sk_bound_dev_if && sk -> sk_bound_dev_if != val ) goto e_inval ; dev = dev_get_by_index ( net , val ) ; if ( ! dev ) { retv = - ENODEV ; break ; } dev_put ( dev ) ; } np -> mcast_oif = val ; retv = 0 ; break ; case IPV6_ADD_MEMBERSHIP : case IPV6_DROP_MEMBERSHIP : { struct ipv6_mreq mreq ; if ( optlen < sizeof ( struct ipv6_mreq ) ) goto e_inval ; retv = - EPROTO ; if ( inet_sk ( sk ) -> is_icsk ) break ; retv = - EFAULT ; if ( copy_from_user ( & mreq , optval , sizeof ( struct ipv6_mreq ) ) ) break ; if ( optname == IPV6_ADD_MEMBERSHIP ) retv = ipv6_sock_mc_join ( sk , mreq . ipv6mr_ifindex , & mreq . ipv6mr_multiaddr ) ; else retv = ipv6_sock_mc_drop ( sk , mreq . ipv6mr_ifindex , & mreq . ipv6mr_multiaddr ) ; break ; } case IPV6_JOIN_ANYCAST : case IPV6_LEAVE_ANYCAST : { struct ipv6_mreq mreq ; if ( optlen < sizeof ( struct ipv6_mreq ) ) goto e_inval ; retv = - EFAULT ; if ( copy_from_user ( & mreq , optval , sizeof ( struct ipv6_mreq ) ) ) break ; if ( optname == IPV6_JOIN_ANYCAST ) retv = ipv6_sock_ac_join ( sk , mreq . ipv6mr_ifindex , & mreq . ipv6mr_acaddr ) ; else retv = ipv6_sock_ac_drop ( sk , mreq . ipv6mr_ifindex , & mreq . ipv6mr_acaddr ) ; break ; } case MCAST_JOIN_GROUP : case MCAST_LEAVE_GROUP : { struct group_req greq ; struct sockaddr_in6 * psin6 ; if ( optlen < sizeof ( struct group_req ) ) goto e_inval ; retv = - EFAULT ; if ( copy_from_user ( & greq , optval , sizeof ( struct group_req ) ) ) break ; if ( greq . gr_group . ss_family != AF_INET6 ) { retv = - EADDRNOTAVAIL ; break ; } psin6 = ( struct sockaddr_in6 * ) & greq . gr_group ; if ( optname == MCAST_JOIN_GROUP ) retv = ipv6_sock_mc_join ( sk , greq . gr_interface , & psin6 -> sin6_addr ) ; else retv = ipv6_sock_mc_drop ( sk , greq . gr_interface , & psin6 -> sin6_addr ) ; break ; } case MCAST_JOIN_SOURCE_GROUP : case MCAST_LEAVE_SOURCE_GROUP : case MCAST_BLOCK_SOURCE : case MCAST_UNBLOCK_SOURCE : { struct group_source_req greqs ; int omode , add ; if ( optlen < sizeof ( struct group_source_req ) ) goto e_inval ; if ( copy_from_user ( & greqs , optval , sizeof ( greqs ) ) ) { retv = - EFAULT ; break ; } if ( greqs . gsr_group . ss_family != AF_INET6 || greqs . gsr_source . ss_family != AF_INET6 ) { retv = - EADDRNOTAVAIL ; break ; } if ( optname == MCAST_BLOCK_SOURCE ) { omode = MCAST_EXCLUDE ; add = 1 ; } else if ( optname == MCAST_UNBLOCK_SOURCE ) { omode = MCAST_EXCLUDE ; add = 0 ; } else if ( optname == MCAST_JOIN_SOURCE_GROUP ) { struct sockaddr_in6 * psin6 ; psin6 = ( struct sockaddr_in6 * ) & greqs . gsr_group ; retv = ipv6_sock_mc_join ( sk , greqs . gsr_interface , & psin6 -> sin6_addr ) ; if ( retv && retv != - EADDRINUSE ) break ; omode = MCAST_INCLUDE ; add = 1 ; } else { omode = MCAST_INCLUDE ; add = 0 ; } retv = ip6_mc_source ( add , omode , sk , & greqs ) ; break ; } case MCAST_MSFILTER : { struct group_filter * gsf ; if ( optlen < GROUP_FILTER_SIZE ( 0 ) ) goto e_inval ; if ( optlen > sysctl_optmem_max ) { retv = - ENOBUFS ; break ; } gsf = kmalloc ( optlen , GFP_KERNEL ) ; if ( ! gsf ) { retv = - ENOBUFS ; break ; } retv = - EFAULT ; if ( copy_from_user ( gsf , optval , optlen ) ) { kfree ( gsf ) ; break ; } if ( gsf -> gf_numsrc >= 0x1ffffffU || gsf -> gf_numsrc > sysctl_mld_max_msf ) { kfree ( gsf ) ; retv = - ENOBUFS ; break ; } if ( GROUP_FILTER_SIZE ( gsf -> gf_numsrc ) > optlen ) { kfree ( gsf ) ; retv = - EINVAL ; break ; } retv = ip6_mc_msfilter ( sk , gsf ) ; kfree ( gsf ) ; break ; } case IPV6_ROUTER_ALERT : if ( optlen < sizeof ( int ) ) goto e_inval ; retv = ip6_ra_control ( sk , val ) ; break ; case IPV6_MTU_DISCOVER : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val < IPV6_PMTUDISC_DONT || val > IPV6_PMTUDISC_OMIT ) goto e_inval ; np -> pmtudisc = val ; retv = 0 ; break ; case IPV6_MTU : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val && val < IPV6_MIN_MTU ) goto e_inval ; np -> frag_size = val ; retv = 0 ; break ; case IPV6_RECVERR : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> recverr = valbool ; if ( ! val ) skb_queue_purge ( & sk -> sk_error_queue ) ; retv = 0 ; break ; case IPV6_FLOWINFO_SEND : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> sndflow = valbool ; retv = 0 ; break ; case IPV6_FLOWLABEL_MGR : retv = ipv6_flowlabel_opt ( sk , optval , optlen ) ; break ; case IPV6_IPSEC_POLICY : case IPV6_XFRM_POLICY : retv = - EPERM ; if ( ! ns_capable ( net -> user_ns , CAP_NET_ADMIN ) ) break ; retv = xfrm_user_policy ( sk , optname , optval , optlen ) ; break ; case IPV6_ADDR_PREFERENCES : { unsigned int pref = 0 ; unsigned int prefmask = ~ 0 ; if ( optlen < sizeof ( int ) ) goto e_inval ; retv = - EINVAL ; switch ( val & ( IPV6_PREFER_SRC_PUBLIC | IPV6_PREFER_SRC_TMP | IPV6_PREFER_SRC_PUBTMP_DEFAULT ) ) { case IPV6_PREFER_SRC_PUBLIC : pref |= IPV6_PREFER_SRC_PUBLIC ; break ; case IPV6_PREFER_SRC_TMP : pref |= IPV6_PREFER_SRC_TMP ; break ; case IPV6_PREFER_SRC_PUBTMP_DEFAULT : break ; case 0 : goto pref_skip_pubtmp ; default : goto e_inval ; } prefmask &= ~ ( IPV6_PREFER_SRC_PUBLIC | IPV6_PREFER_SRC_TMP ) ; pref_skip_pubtmp : switch ( val & ( IPV6_PREFER_SRC_HOME | IPV6_PREFER_SRC_COA ) ) { case IPV6_PREFER_SRC_HOME : break ; case IPV6_PREFER_SRC_COA : pref |= IPV6_PREFER_SRC_COA ; case 0 : goto pref_skip_coa ; default : goto e_inval ; } prefmask &= ~ IPV6_PREFER_SRC_COA ; pref_skip_coa : switch ( val & ( IPV6_PREFER_SRC_CGA | IPV6_PREFER_SRC_NONCGA ) ) { case IPV6_PREFER_SRC_CGA : case IPV6_PREFER_SRC_NONCGA : case 0 : break ; default : goto e_inval ; } np -> srcprefs = ( np -> srcprefs & prefmask ) | pref ; retv = 0 ; break ; } case IPV6_MINHOPCOUNT : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val < 0 || val > 255 ) goto e_inval ; np -> min_hopcount = val ; retv = 0 ; break ; case IPV6_DONTFRAG : np -> dontfrag = valbool ; retv = 0 ; break ; case IPV6_AUTOFLOWLABEL : np -> autoflowlabel = valbool ; retv = 0 ; break ; } release_sock ( sk ) ; if ( needs_rtnl ) rtnl_unlock ( ) ; return retv ; e_inval : release_sock ( sk ) ; if ( needs_rtnl ) rtnl_unlock ( ) ; return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = xchg ( ( __force struct ipv6_txoptions * * ) <S2SV_ModStart> ( opt ) { atomic_sub ( opt -> tot_len , & sk -> sk_omem_alloc ) ; txopt_put ( opt ) ; } <S2SV_ModEnd> pktopt = xchg <S2SV_ModStart> ; opt = rcu_dereference_protected ( np -> opt , sock_owned_by_user ( sk ) ) ; opt = <S2SV_ModStart> ( sk , <S2SV_ModEnd> opt , optname <S2SV_ModStart> ( opt ) { atomic_sub ( opt -> tot_len , & sk -> sk_omem_alloc ) ; txopt_put ( opt ) ; } <S2SV_ModEnd> break ; } <S2SV_ModStart> ) ) ; atomic_set ( & opt -> refcnt , 1 ) ; <S2SV_ModStart> ( opt ) { atomic_sub ( opt -> tot_len , & sk -> sk_omem_alloc ) ; txopt_put ( opt ) ; } <S2SV_ModEnd> break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-0011\n\n```\nCWE-264 void eval_js ( WebKitWebView * web_view , gchar * script , GString * result ) { WebKitWebFrame * frame ; JSGlobalContextRef context ; <S2SV_StartBug> JSObjectRef globalobject ; <S2SV_EndBug> JSStringRef var_name ; JSStringRef js_script ; JSValueRef js_result ; JSStringRef js_result_string ; size_t js_result_size ; js_init ( ) ; frame = webkit_web_view_get_main_frame ( WEBKIT_WEB_VIEW ( web_view ) ) ; context = webkit_web_frame_get_global_context ( frame ) ; <S2SV_StartBug> globalobject = JSContextGetGlobalObject ( context ) ; <S2SV_EndBug> var_name = JSStringCreateWithUTF8CString ( \"Uzbl\" ) ; JSObjectSetProperty ( context , globalobject , var_name , JSObjectMake ( context , uzbl . js . classref , NULL ) , kJSClassAttributeNone , NULL ) ; js_script = JSStringCreateWithUTF8CString ( script ) ; js_result = JSEvaluateScript ( context , js_script , globalobject , NULL , 0 , NULL ) ; if ( js_result && ! JSValueIsUndefined ( context , js_result ) ) { js_result_string = JSValueToStringCopy ( context , js_result , NULL ) ; js_result_size = JSStringGetMaximumUTF8CStringSize ( js_result_string ) ; if ( js_result_size ) { char js_result_utf8 [ js_result_size ] ; JSStringGetUTF8CString ( js_result_string , js_result_utf8 , js_result_size ) ; g_string_assign ( result , js_result_utf8 ) ; } JSStringRelease ( js_result_string ) ; } <S2SV_StartBug> JSObjectDeleteProperty ( context , globalobject , var_name , NULL ) ; <S2SV_EndBug> JSStringRelease ( var_name ) ; JSStringRelease ( js_script ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; JSObjectRef globalobject <S2SV_ModEnd> ; JSStringRef js_script <S2SV_ModStart> JSContextGetGlobalObject ( context <S2SV_ModEnd> ) ; js_script <S2SV_ModStart> ) ; } <S2SV_ModEnd> JSStringRelease ( js_script\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_init_plane_quantizers ( VP9_COMP * cpi , MACROBLOCK * x ) { const VP9_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & x -> e_mbd ; QUANTS * const quants = & cpi -> quants ; const int segment_id = xd -> mi [ 0 ] -> mbmi . segment_id ; const int qindex = vp9_get_qindex ( & cm -> seg , segment_id , cm -> base_qindex ) ; const int rdmult = vp9_compute_rd_mult ( cpi , qindex + cm -> y_dc_delta_q ) ; <S2SV_StartBug> const int zbin = cpi -> zbin_mode_boost + x -> act_zbin_adj ; <S2SV_EndBug> int i ; x -> plane [ 0 ] . quant = quants -> y_quant [ qindex ] ; <S2SV_StartBug> x -> plane [ 0 ] . quant_shift = quants -> y_quant_shift [ qindex ] ; <S2SV_EndBug> x -> plane [ 0 ] . zbin = quants -> y_zbin [ qindex ] ; x -> plane [ 0 ] . round = quants -> y_round [ qindex ] ; <S2SV_StartBug> x -> plane [ 0 ] . zbin_extra = ( int16_t ) ( ( cm -> y_dequant [ qindex ] [ 1 ] * zbin ) >> 7 ) ; <S2SV_EndBug> xd -> plane [ 0 ] . dequant = cm -> y_dequant [ qindex ] ; for ( i = 1 ; i < 3 ; i ++ ) { x -> plane [ i ] . quant = quants -> uv_quant [ qindex ] ; <S2SV_StartBug> x -> plane [ i ] . quant_shift = quants -> uv_quant_shift [ qindex ] ; <S2SV_EndBug> x -> plane [ i ] . zbin = quants -> uv_zbin [ qindex ] ; x -> plane [ i ] . round = quants -> uv_round [ qindex ] ; <S2SV_StartBug> x -> plane [ i ] . zbin_extra = ( int16_t ) ( ( cm -> uv_dequant [ qindex ] [ 1 ] * zbin ) >> 7 ) ; <S2SV_EndBug> xd -> plane [ i ] . dequant = cm -> uv_dequant [ qindex ] ; } <S2SV_StartBug> # if CONFIG_ALPHA <S2SV_EndBug> x -> plane [ 3 ] . quant = cpi -> a_quant [ qindex ] ; x -> plane [ 3 ] . quant_shift = cpi -> a_quant_shift [ qindex ] ; x -> plane [ 3 ] . zbin = cpi -> a_zbin [ qindex ] ; x -> plane [ 3 ] . round = cpi -> a_round [ qindex ] ; x -> plane [ 3 ] . zbin_extra = ( int16_t ) ( ( cm -> a_dequant [ qindex ] [ 1 ] * zbin ) >> 7 ) ; xd -> plane [ 3 ] . dequant = cm -> a_dequant [ qindex ] ; # endif <S2SV_StartBug> x -> skip_block = vp9_segfeature_active ( & cm -> seg , segment_id , SEG_LVL_SKIP ) ; <S2SV_EndBug> x -> q_index = qindex ; x -> errorperbit = rdmult >> 6 ; x -> errorperbit += ( x -> errorperbit == 0 ) ; <S2SV_StartBug> vp9_initialize_me_consts ( cpi , x -> q_index ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> y_dc_delta_q ) ; int <S2SV_ModEnd> i ; x <S2SV_ModStart> 0 ] . quant_fp = quants -> y_quant_fp [ qindex ] ; x -> plane [ 0 ] . round_fp = quants -> y_round_fp [ qindex ] ; x -> plane [ 0 ] . <S2SV_ModStart> qindex ] ; xd -> plane [ 0 ] . dequant = cpi <S2SV_ModEnd> -> y_dequant [ <S2SV_ModStart> [ qindex ] ; x -> plane [ 0 ] . quant_thred [ 0 ] = x -> plane [ 0 ] . zbin [ 0 ] * x -> plane [ 0 ] . zbin [ 0 ] ; x -> plane [ 0 ] . quant_thred [ 1 ] = x -> plane [ 0 ] . zbin [ 1 ] * x -> plane [ 0 ] . zbin [ 1 <S2SV_ModEnd> ] ; for <S2SV_ModStart> i ] . quant_fp = quants -> uv_quant_fp [ qindex ] ; x -> plane [ i ] . round_fp = quants -> uv_round_fp [ qindex ] ; x -> plane [ i ] . <S2SV_ModStart> qindex ] ; xd -> plane [ i ] . dequant = cpi <S2SV_ModEnd> -> uv_dequant [ <S2SV_ModStart> [ qindex ] ; x -> plane [ i ] . quant_thred [ 0 ] = x -> plane [ i ] . zbin [ 0 ] * x -> plane [ i ] . zbin [ 0 ] ; x -> plane [ i ] . quant_thred [ 1 ] = x -> plane [ i ] . zbin [ 1 ] * x -> plane [ i ] . zbin [ 1 <S2SV_ModEnd> ] ; } <S2SV_ModStart> ] ; } <S2SV_ModEnd> x -> skip_block <S2SV_ModStart> -> skip_block = segfeature_active <S2SV_ModEnd> ( & cm <S2SV_ModStart> cpi , x , x\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20456\n\n```\nCWE-125 static int parseOperand ( RAsm * a , const char * str , Operand * op , bool isrepop ) { size_t pos , nextpos = 0 ; x86newTokenType last_type ; int size_token = 1 ; bool explicit_size = false ; int reg_index = 0 ; op -> type = 0 ; while ( size_token ) { pos = nextpos ; last_type = getToken ( str , & pos , & nextpos ) ; if ( ! r_str_ncasecmp ( str + pos , \"ptr\" , 3 ) ) { continue ; } else if ( ! r_str_ncasecmp ( str + pos , \"byte\" , 4 ) ) { op -> type |= OT_MEMORY | OT_BYTE ; op -> dest_size = OT_BYTE ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"word\" , 4 ) ) { op -> type |= OT_MEMORY | OT_WORD ; op -> dest_size = OT_WORD ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"dword\" , 5 ) ) { op -> type |= OT_MEMORY | OT_DWORD ; op -> dest_size = OT_DWORD ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"qword\" , 5 ) ) { op -> type |= OT_MEMORY | OT_QWORD ; op -> dest_size = OT_QWORD ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"oword\" , 5 ) ) { op -> type |= OT_MEMORY | OT_OWORD ; op -> dest_size = OT_OWORD ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"tbyte\" , 5 ) ) { op -> type |= OT_MEMORY | OT_TBYTE ; op -> dest_size = OT_TBYTE ; explicit_size = true ; } else { size_token = 0 ; } } if ( str [ pos ] == '[' ) { if ( ! op -> type ) { op -> type = OT_MEMORY ; } op -> offset = op -> scale [ 0 ] = op -> scale [ 1 ] = 0 ; ut64 temp = 1 ; Register reg = X86R_UNDEFINED ; bool first_reg = true ; while ( str [ pos ] != ']' ) { if ( pos > nextpos ) { break ; } pos = nextpos ; if ( ! str [ pos ] ) { break ; } last_type = getToken ( str , & pos , & nextpos ) ; if ( last_type == TT_SPECIAL ) { if ( str [ pos ] == '+' || str [ pos ] == '-' || str [ pos ] == ']' ) { if ( reg != X86R_UNDEFINED ) { <S2SV_StartBug> op -> regs [ reg_index ] = reg ; <S2SV_EndBug> op -> scale [ reg_index ] = temp ; <S2SV_StartBug> ++ reg_index ; <S2SV_EndBug> } else { <S2SV_StartBug> op -> offset += temp ; <S2SV_EndBug> <S2SV_StartBug> op -> regs [ reg_index ] = X86R_UNDEFINED ; <S2SV_EndBug> } temp = 1 ; reg = X86R_UNDEFINED ; } else if ( str [ pos ] == '*' ) { } } else if ( last_type == TT_WORD ) { ut32 reg_type = 0 ; if ( reg != X86R_UNDEFINED ) { op -> type = 0 ; } nextpos = pos ; reg = parseReg ( a , str , & nextpos , & reg_type ) ; if ( first_reg ) { op -> extended = false ; if ( reg > 8 ) { op -> extended = true ; op -> reg = reg - 9 ; } first_reg = false ; } else if ( reg > 8 ) { op -> reg = reg - 9 ; } if ( reg_type & OT_REGTYPE & OT_SEGMENTREG ) { op -> reg = reg ; op -> type = reg_type ; parse_segment_offset ( a , str , & nextpos , op , reg_index ) ; return nextpos ; } if ( ! explicit_size ) { op -> type |= reg_type ; } op -> reg_size = reg_type ; op -> explicit_size = explicit_size ; if ( ! ( reg_type & OT_GPREG ) ) { op -> type = 0 ; } } else { char * p = strchr ( str , '+' ) ; op -> offset_sign = 1 ; if ( ! p ) { p = strchr ( str , '-' ) ; if ( p ) { op -> offset_sign = - 1 ; } } char * plus = strchr ( str , '+' ) ; char * minus = strchr ( str , '-' ) ; char * closeB = strchr ( str , ']' ) ; if ( plus && minus && plus < closeB && minus < closeB ) { op -> offset_sign = - 1 ; } char * tmp ; tmp = malloc ( strlen ( str + pos ) + 1 ) ; strcpy ( tmp , str + pos ) ; strtok ( tmp , \"+-\" ) ; st64 read = getnum ( a , tmp ) ; free ( tmp ) ; temp *= read ; } } } else if ( last_type == TT_WORD ) { nextpos = pos ; RFlagItem * flag ; if ( isrepop ) { op -> is_good_flag = false ; strncpy ( op -> rep_op , str , MAX_REPOP_LENGTH - 1 ) ; op -> rep_op [ MAX_REPOP_LENGTH - 1 ] = '\\\\0' ; return nextpos ; } op -> reg = parseReg ( a , str , & nextpos , & op -> type ) ; op -> extended = false ; if ( op -> reg > 8 ) { op -> extended = true ; op -> reg -= 9 ; } if ( op -> type & OT_REGTYPE & OT_SEGMENTREG ) { parse_segment_offset ( a , str , & nextpos , op , reg_index ) ; return nextpos ; } if ( op -> reg == X86R_UNDEFINED ) { op -> is_good_flag = false ; if ( a -> num && a -> num -> value == 0 ) { return nextpos ; } op -> type = OT_CONSTANT ; RCore * core = a -> num ? ( RCore * ) ( a -> num -> userptr ) : NULL ; if ( core && ( flag = r_flag_get ( core -> flags , str ) ) ) { op -> is_good_flag = true ; } char * p = strchr ( str , '-' ) ; if ( p ) { op -> sign = - 1 ; str = ++ p ; } op -> immediate = getnum ( a , str ) ; } else if ( op -> reg < X86R_UNDEFINED ) { strncpy ( op -> rep_op , str , MAX_REPOP_LENGTH - 1 ) ; op -> rep_op [ MAX_REPOP_LENGTH - 1 ] = '\\\\0' ; } } else { op -> type = OT_CONSTANT ; op -> sign = 1 ; char * p = strchr ( str , '-' ) ; if ( p ) { op -> sign = - 1 ; str = ++ p ; } op -> immediate = getnum ( a , str ) ; } return nextpos ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> X86R_UNDEFINED ) { if ( reg_index < 2 ) { <S2SV_ModStart> = temp ; } <S2SV_ModStart> += temp ; if ( reg_index < 2 ) { <S2SV_ModStart> = X86R_UNDEFINED ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5226\n\n```\nCWE-20 int main ( int argc , char * * argv ) { mode_t old_umask ; cleanup_free char * base_path = NULL ; int clone_flags ; char * old_cwd = NULL ; pid_t pid ; int event_fd = - 1 ; int child_wait_fd = - 1 ; const char * new_cwd ; uid_t ns_uid ; gid_t ns_gid ; struct stat sbuf ; uint64_t val ; int res UNUSED ; real_uid = getuid ( ) ; real_gid = getgid ( ) ; acquire_privs ( ) ; if ( prctl ( PR_SET_NO_NEW_PRIVS , 1 , 0 , 0 , 0 ) < 0 ) die_with_error ( \"prctl(PR_SET_NO_NEW_CAPS)<S2SV_blank>failed\" ) ; read_overflowids ( ) ; argv0 = argv [ 0 ] ; if ( isatty ( 1 ) ) host_tty_dev = ttyname ( 1 ) ; argv ++ ; argc -- ; if ( argc == 0 ) usage ( EXIT_FAILURE , stderr ) ; parse_args ( & argc , & argv ) ; if ( ! is_privileged && getuid ( ) != 0 ) opt_unshare_user = TRUE ; if ( opt_unshare_user_try && stat ( \"/proc/self/ns/user\" , & sbuf ) == 0 ) { bool disabled = FALSE ; if ( stat ( \"/sys/module/user_namespace/parameters/enable\" , & sbuf ) == 0 ) { cleanup_free char * enable = NULL ; enable = load_file_at ( AT_FDCWD , \"/sys/module/user_namespace/parameters/enable\" ) ; if ( enable != NULL && enable [ 0 ] == 'N' ) disabled = TRUE ; } if ( ! disabled ) opt_unshare_user = TRUE ; } if ( argc == 0 ) usage ( EXIT_FAILURE , stderr ) ; __debug__ ( ( \"Creating<S2SV_blank>root<S2SV_blank>mount<S2SV_blank>point\\\\n\" ) ) ; if ( opt_sandbox_uid == - 1 ) opt_sandbox_uid = real_uid ; if ( opt_sandbox_gid == - 1 ) opt_sandbox_gid = real_gid ; if ( ! opt_unshare_user && opt_sandbox_uid != real_uid ) die ( \"Specifying<S2SV_blank>--uid<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( ! opt_unshare_user && opt_sandbox_gid != real_gid ) die ( \"Specifying<S2SV_blank>--gid<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( ! opt_unshare_uts && opt_sandbox_hostname != NULL ) die ( \"Specifying<S2SV_blank>--hostname<S2SV_blank>requires<S2SV_blank>--unshare-uts\" ) ; proc_fd = open ( \"/proc\" , O_RDONLY | O_PATH ) ; if ( proc_fd == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>open<S2SV_blank>/proc\" ) ; base_path = xasprintf ( \"/run/user/%d/.bubblewrap\" , real_uid ) ; if ( mkdir ( base_path , 0755 ) && errno != EEXIST ) { free ( base_path ) ; base_path = xasprintf ( \"/tmp/.bubblewrap-%d\" , real_uid ) ; if ( mkdir ( base_path , 0755 ) && errno != EEXIST ) die_with_error ( \"Creating<S2SV_blank>root<S2SV_blank>mountpoint<S2SV_blank>failed\" ) ; } __debug__ ( ( \"creating<S2SV_blank>new<S2SV_blank>namespace\\\\n\" ) ) ; if ( opt_unshare_pid ) { event_fd = eventfd ( 0 , EFD_CLOEXEC | EFD_NONBLOCK ) ; if ( event_fd == - 1 ) die_with_error ( \"eventfd()\" ) ; } block_sigchild ( ) ; clone_flags = SIGCHLD | CLONE_NEWNS ; if ( opt_unshare_user ) clone_flags |= CLONE_NEWUSER ; if ( opt_unshare_pid ) clone_flags |= CLONE_NEWPID ; if ( opt_unshare_net ) clone_flags |= CLONE_NEWNET ; if ( opt_unshare_ipc ) clone_flags |= CLONE_NEWIPC ; if ( opt_unshare_uts ) clone_flags |= CLONE_NEWUTS ; if ( opt_unshare_cgroup ) { if ( stat ( \"/proc/self/ns/cgroup\" , & sbuf ) ) { if ( errno == ENOENT ) die ( \"Cannot<S2SV_blank>create<S2SV_blank>new<S2SV_blank>cgroup<S2SV_blank>namespace<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>it\" ) ; else die_with_error ( \"stat<S2SV_blank>on<S2SV_blank>/proc/self/ns/cgroup<S2SV_blank>failed\" ) ; } clone_flags |= CLONE_NEWCGROUP ; } if ( opt_unshare_cgroup_try ) if ( ! stat ( \"/proc/self/ns/cgroup\" , & sbuf ) ) clone_flags |= CLONE_NEWCGROUP ; child_wait_fd = eventfd ( 0 , EFD_CLOEXEC ) ; if ( child_wait_fd == - 1 ) die_with_error ( \"eventfd()\" ) ; pid = raw_clone ( clone_flags , NULL ) ; if ( pid == - 1 ) { if ( opt_unshare_user ) { if ( errno == EINVAL ) die ( \"Creating<S2SV_blank>new<S2SV_blank>namespace<S2SV_blank>failed,<S2SV_blank>likely<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>user<S2SV_blank>namespaces.<S2SV_blank><S2SV_blank>bwrap<S2SV_blank>must<S2SV_blank>be<S2SV_blank>installed<S2SV_blank>setuid<S2SV_blank>on<S2SV_blank>such<S2SV_blank>systems.\" ) ; else if ( errno == EPERM && ! is_privileged ) die ( \"No<S2SV_blank>permissions<S2SV_blank>to<S2SV_blank>creating<S2SV_blank>new<S2SV_blank>namespace,<S2SV_blank>likely<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>allow<S2SV_blank>non-privileged<S2SV_blank>user<S2SV_blank>namespaces.<S2SV_blank>On<S2SV_blank>e.g.<S2SV_blank>debian<S2SV_blank>this<S2SV_blank>can<S2SV_blank>be<S2SV_blank>enabled<S2SV_blank>with<S2SV_blank>\\'sysctl<S2SV_blank>kernel.unprivileged_userns_clone=1\\'.\" ) ; } die_with_error ( \"Creating<S2SV_blank>new<S2SV_blank>namespace<S2SV_blank>failed\" ) ; } ns_uid = opt_sandbox_uid ; ns_gid = opt_sandbox_gid ; if ( pid != 0 ) { if ( is_privileged && opt_unshare_user ) { write_uid_gid_map ( ns_uid , real_uid , ns_gid , real_gid , pid , TRUE , opt_needs_devpts ) ; } drop_privs ( ) ; val = 1 ; res = write ( child_wait_fd , & val , 8 ) ; close ( child_wait_fd ) ; if ( opt_info_fd != - 1 ) { cleanup_free char * output = xasprintf ( \"{\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\\\\"child-pid\\\\\":<S2SV_blank>%i\\\\n}\\\\n\" , pid ) ; size_t len = strlen ( output ) ; if ( write ( opt_info_fd , output , len ) != len ) die_with_error ( \"Write<S2SV_blank>to<S2SV_blank>info_fd\" ) ; close ( opt_info_fd ) ; } monitor_child ( event_fd ) ; exit ( 0 ) ; } if ( opt_info_fd != - 1 ) close ( opt_info_fd ) ; res = read ( child_wait_fd , & val , 8 ) ; close ( child_wait_fd ) ; switch_to_user_with_privs ( ) ; if ( opt_unshare_net && loopback_setup ( ) != 0 ) die ( \"Can\\'t<S2SV_blank>create<S2SV_blank>loopback<S2SV_blank>device\" ) ; ns_uid = opt_sandbox_uid ; ns_gid = opt_sandbox_gid ; if ( ! is_privileged && opt_unshare_user ) { if ( opt_needs_devpts ) { ns_uid = 0 ; ns_gid = 0 ; } write_uid_gid_map ( ns_uid , real_uid , ns_gid , real_gid , - 1 , TRUE , FALSE ) ; } old_umask = umask ( 0 ) ; resolve_symlinks_in_ops ( ) ; if ( mount ( NULL , \"/\" , NULL , MS_SLAVE | MS_REC , NULL ) < 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>/<S2SV_blank>slave\" ) ; if ( mount ( \"\" , base_path , \"tmpfs\" , MS_NODEV | MS_NOSUID , NULL ) != 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>tmpfs\" ) ; old_cwd = get_current_dir_name ( ) ; if ( chdir ( base_path ) != 0 ) die_with_error ( \"chdir<S2SV_blank>base_path\" ) ; if ( mkdir ( \"newroot\" , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>newroot<S2SV_blank>failed\" ) ; if ( mkdir ( \"oldroot\" , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>oldroot<S2SV_blank>failed\" ) ; if ( pivot_root ( base_path , \"oldroot\" ) ) die_with_error ( \"pivot_root\" ) ; if ( chdir ( \"/\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/<S2SV_blank>(base<S2SV_blank>path)\" ) ; if ( is_privileged ) { pid_t child ; int privsep_sockets [ 2 ] ; if ( socketpair ( AF_UNIX , SOCK_SEQPACKET | SOCK_CLOEXEC , 0 , privsep_sockets ) != 0 ) die_with_error ( \"Can\\'t<S2SV_blank>create<S2SV_blank>privsep<S2SV_blank>socket\" ) ; child = fork ( ) ; if ( child == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>fork<S2SV_blank>unprivileged<S2SV_blank>helper\" ) ; if ( child == 0 ) { drop_privs ( ) ; close ( privsep_sockets [ 0 ] ) ; setup_newroot ( opt_unshare_pid , privsep_sockets [ 1 ] ) ; exit ( 0 ) ; } else { int status ; uint32_t buffer [ 2048 ] ; uint32_t op , flags ; const char * arg1 , * arg2 ; cleanup_fd int unpriv_socket = - 1 ; unpriv_socket = privsep_sockets [ 0 ] ; close ( privsep_sockets [ 1 ] ) ; do { op = read_priv_sec_op ( unpriv_socket , buffer , sizeof ( buffer ) , & flags , & arg1 , & arg2 ) ; privileged_op ( - 1 , op , flags , arg1 , arg2 ) ; if ( write ( unpriv_socket , buffer , 1 ) != 1 ) die ( \"Can\\'t<S2SV_blank>write<S2SV_blank>to<S2SV_blank>op_socket\" ) ; } while ( op != PRIV_SEP_OP_DONE ) ; waitpid ( child , & status , 0 ) ; } } else { setup_newroot ( opt_unshare_pid , - 1 ) ; } if ( mount ( \"oldroot\" , \"oldroot\" , NULL , MS_REC | MS_PRIVATE , NULL ) != 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>old<S2SV_blank>root<S2SV_blank>rprivate\" ) ; if ( umount2 ( \"oldroot\" , MNT_DETACH ) ) die_with_error ( \"unmount<S2SV_blank>old<S2SV_blank>root\" ) ; if ( opt_unshare_user && ( ns_uid != opt_sandbox_uid || ns_gid != opt_sandbox_gid ) ) { if ( unshare ( CLONE_NEWUSER ) ) die_with_error ( \"unshare<S2SV_blank>user<S2SV_blank>ns\" ) ; write_uid_gid_map ( opt_sandbox_uid , ns_uid , opt_sandbox_gid , ns_gid , - 1 , FALSE , FALSE ) ; } if ( chdir ( \"/newroot\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>newroot\" ) ; if ( chroot ( \"/newroot\" ) != 0 ) die_with_error ( \"chroot<S2SV_blank>/newroot\" ) ; if ( chdir ( \"/\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/\" ) ; drop_privs ( ) ; if ( opt_block_fd != - 1 ) { char b [ 1 ] ; read ( opt_block_fd , b , 1 ) ; close ( opt_block_fd ) ; } if ( opt_seccomp_fd != - 1 ) { cleanup_free char * seccomp_data = NULL ; size_t seccomp_len ; struct sock_fprog prog ; seccomp_data = load_file_data ( opt_seccomp_fd , & seccomp_len ) ; if ( seccomp_data == NULL ) die_with_error ( \"Can\\'t<S2SV_blank>read<S2SV_blank>seccomp<S2SV_blank>data\" ) ; if ( seccomp_len % 8 != 0 ) die ( \"Invalid<S2SV_blank>seccomp<S2SV_blank>data,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>8\" ) ; prog . len = seccomp_len / 8 ; prog . filter = ( struct sock_filter * ) seccomp_data ; close ( opt_seccomp_fd ) ; if ( prctl ( PR_SET_SECCOMP , SECCOMP_MODE_FILTER , & prog ) != 0 ) die_with_error ( \"prctl(PR_SET_SECCOMP)\" ) ; } umask ( old_umask ) ; new_cwd = \"/\" ; if ( opt_chdir_path ) { if ( chdir ( opt_chdir_path ) ) die_with_error ( \"Can\\'t<S2SV_blank>chdir<S2SV_blank>to<S2SV_blank>%s\" , opt_chdir_path ) ; new_cwd = opt_chdir_path ; } else if ( chdir ( old_cwd ) == 0 ) { new_cwd = old_cwd ; } else { const char * home = getenv ( \"HOME\" ) ; if ( home != NULL && chdir ( home ) == 0 ) new_cwd = home ; } xsetenv ( \"PWD\" , new_cwd , 1 ) ; free ( old_cwd ) ; __debug__ ( ( \"forking<S2SV_blank>for<S2SV_blank>child\\\\n\" ) ) ; if ( opt_unshare_pid || lock_files != NULL || opt_sync_fd != - 1 ) { pid = fork ( ) ; if ( pid == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>fork<S2SV_blank>for<S2SV_blank>pid<S2SV_blank>1\" ) ; if ( pid != 0 ) { { int dont_close [ 3 ] ; int j = 0 ; if ( event_fd != - 1 ) dont_close [ j ++ ] = event_fd ; if ( opt_sync_fd != - 1 ) dont_close [ j ++ ] = opt_sync_fd ; dont_close [ j ++ ] = - 1 ; fdwalk ( proc_fd , close_extra_fds , dont_close ) ; } return do_init ( event_fd , pid ) ; } } __debug__ ( ( \"launch<S2SV_blank>executable<S2SV_blank>%s\\\\n\" , argv [ 0 ] ) ) ; if ( proc_fd != - 1 ) close ( proc_fd ) ; if ( opt_sync_fd != - 1 ) close ( opt_sync_fd ) ; unblock_sigchild ( ) ; <S2SV_StartBug> if ( label_exec ( opt_exec_label ) == - 1 ) <S2SV_EndBug> die_with_error ( \"label_exec<S2SV_blank>%s\" , argv [ 0 ] ) ; if ( execvp ( argv [ 0 ] , argv ) == - 1 ) die_with_error ( \"execvp<S2SV_blank>%s\" , argv [ 0 ] ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( setsid ( ) == ( pid_t ) - 1 ) die_with_error ( \"setsid\" ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 long follow_hugetlb_page ( struct mm_struct * mm , struct vm_area_struct * vma , struct page * * pages , struct vm_area_struct * * vmas , unsigned long * position , unsigned long * nr_pages , long i , unsigned int flags , int * nonblocking ) { unsigned long pfn_offset ; unsigned long vaddr = * position ; unsigned long remainder = * nr_pages ; struct hstate * h = hstate_vma ( vma ) ; int err = - EFAULT ; while ( vaddr < vma -> vm_end && remainder ) { pte_t * pte ; spinlock_t * ptl = NULL ; int absent ; struct page * page ; if ( fatal_signal_pending ( current ) ) { remainder = 0 ; break ; } pte = huge_pte_offset ( mm , vaddr & huge_page_mask ( h ) , huge_page_size ( h ) ) ; if ( pte ) ptl = huge_pte_lock ( h , mm , pte ) ; absent = ! pte || huge_pte_none ( huge_ptep_get ( pte ) ) ; if ( absent && ( flags & FOLL_DUMP ) && ! hugetlbfs_pagecache_present ( h , vma , vaddr ) ) { if ( pte ) spin_unlock ( ptl ) ; remainder = 0 ; break ; } if ( absent || is_swap_pte ( huge_ptep_get ( pte ) ) || ( ( flags & FOLL_WRITE ) && ! huge_pte_write ( huge_ptep_get ( pte ) ) ) ) { vm_fault_t ret ; unsigned int fault_flags = 0 ; if ( pte ) spin_unlock ( ptl ) ; if ( flags & FOLL_WRITE ) fault_flags |= FAULT_FLAG_WRITE ; if ( nonblocking ) fault_flags |= FAULT_FLAG_ALLOW_RETRY ; if ( flags & FOLL_NOWAIT ) fault_flags |= FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_RETRY_NOWAIT ; if ( flags & FOLL_TRIED ) { VM_WARN_ON_ONCE ( fault_flags & FAULT_FLAG_ALLOW_RETRY ) ; fault_flags |= FAULT_FLAG_TRIED ; } ret = hugetlb_fault ( mm , vma , vaddr , fault_flags ) ; if ( ret & VM_FAULT_ERROR ) { err = vm_fault_to_errno ( ret , flags ) ; remainder = 0 ; break ; } if ( ret & VM_FAULT_RETRY ) { if ( nonblocking && ! ( fault_flags & FAULT_FLAG_RETRY_NOWAIT ) ) * nonblocking = 0 ; * nr_pages = 0 ; return i ; } continue ; } pfn_offset = ( vaddr & ~ huge_page_mask ( h ) ) >> PAGE_SHIFT ; page = pte_page ( huge_ptep_get ( pte ) ) ; <S2SV_StartBug> same_page : <S2SV_EndBug> if ( pages ) { pages [ i ] = mem_map_offset ( page , pfn_offset ) ; get_page ( pages [ i ] ) ; } if ( vmas ) vmas [ i ] = vma ; vaddr += PAGE_SIZE ; ++ pfn_offset ; -- remainder ; ++ i ; if ( vaddr < vma -> vm_end && remainder && pfn_offset < pages_per_huge_page ( h ) ) { goto same_page ; } spin_unlock ( ptl ) ; } * nr_pages = remainder ; * position = vaddr ; return i ? i : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( unlikely ( page_count ( page ) <= 0 ) ) { if ( pages ) { spin_unlock ( ptl ) ; remainder = 0 ; err = - ENOMEM ; break ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t set_vp8e_config ( VP8_CONFIG * oxcf , vpx_codec_enc_cfg_t cfg , struct vp8_extracfg vp8_cfg , vpx_codec_priv_enc_mr_cfg_t * mr_cfg ) { oxcf -> multi_threaded = cfg . g_threads ; oxcf -> Version = cfg . g_profile ; oxcf -> Width = cfg . g_w ; oxcf -> Height = cfg . g_h ; oxcf -> timebase = cfg . g_timebase ; oxcf -> error_resilient_mode = cfg . g_error_resilient ; switch ( cfg . g_pass ) { case VPX_RC_ONE_PASS : oxcf -> Mode = MODE_BESTQUALITY ; break ; case VPX_RC_FIRST_PASS : oxcf -> Mode = MODE_FIRSTPASS ; break ; case VPX_RC_LAST_PASS : oxcf -> Mode = MODE_SECONDPASS_BEST ; break ; } if ( cfg . g_pass == VPX_RC_FIRST_PASS || cfg . g_pass == VPX_RC_ONE_PASS ) { oxcf -> allow_lag = 0 ; oxcf -> lag_in_frames = 0 ; } else { oxcf -> allow_lag = ( cfg . g_lag_in_frames ) > 0 ; oxcf -> lag_in_frames = cfg . g_lag_in_frames ; } oxcf -> allow_df = ( cfg . rc_dropframe_thresh > 0 ) ; oxcf -> drop_frames_water_mark = cfg . rc_dropframe_thresh ; oxcf -> allow_spatial_resampling = cfg . rc_resize_allowed ; oxcf -> resample_up_water_mark = cfg . rc_resize_up_thresh ; oxcf -> resample_down_water_mark = cfg . rc_resize_down_thresh ; if ( cfg . rc_end_usage == VPX_VBR ) { oxcf -> end_usage = USAGE_LOCAL_FILE_PLAYBACK ; } else if ( cfg . rc_end_usage == VPX_CBR ) { oxcf -> end_usage = USAGE_STREAM_FROM_SERVER ; } else if ( cfg . rc_end_usage == VPX_CQ ) { oxcf -> end_usage = USAGE_CONSTRAINED_QUALITY ; } else if ( cfg . rc_end_usage == VPX_Q ) { oxcf -> end_usage = USAGE_CONSTANT_QUALITY ; } oxcf -> target_bandwidth = cfg . rc_target_bitrate ; oxcf -> rc_max_intra_bitrate_pct = vp8_cfg . rc_max_intra_bitrate_pct ; oxcf -> best_allowed_q = cfg . rc_min_quantizer ; oxcf -> worst_allowed_q = cfg . rc_max_quantizer ; oxcf -> cq_level = vp8_cfg . cq_level ; oxcf -> fixed_q = - 1 ; oxcf -> under_shoot_pct = cfg . rc_undershoot_pct ; oxcf -> over_shoot_pct = cfg . rc_overshoot_pct ; oxcf -> maximum_buffer_size_in_ms = cfg . rc_buf_sz ; oxcf -> starting_buffer_level_in_ms = cfg . rc_buf_initial_sz ; oxcf -> optimal_buffer_level_in_ms = cfg . rc_buf_optimal_sz ; oxcf -> maximum_buffer_size = cfg . rc_buf_sz ; oxcf -> starting_buffer_level = cfg . rc_buf_initial_sz ; oxcf -> optimal_buffer_level = cfg . rc_buf_optimal_sz ; oxcf -> two_pass_vbrbias = cfg . rc_2pass_vbr_bias_pct ; oxcf -> two_pass_vbrmin_section = cfg . rc_2pass_vbr_minsection_pct ; oxcf -> two_pass_vbrmax_section = cfg . rc_2pass_vbr_maxsection_pct ; oxcf -> auto_key = cfg . kf_mode == VPX_KF_AUTO && cfg . kf_min_dist != cfg . kf_max_dist ; oxcf -> key_freq = cfg . kf_max_dist ; oxcf -> number_of_layers = cfg . ts_number_layers ; oxcf -> periodicity = cfg . ts_periodicity ; if ( oxcf -> number_of_layers > 1 ) { memcpy ( oxcf -> target_bitrate , cfg . ts_target_bitrate , sizeof ( cfg . ts_target_bitrate ) ) ; memcpy ( oxcf -> rate_decimator , cfg . ts_rate_decimator , sizeof ( cfg . ts_rate_decimator ) ) ; memcpy ( oxcf -> layer_id , cfg . ts_layer_id , sizeof ( cfg . ts_layer_id ) ) ; } # if CONFIG_MULTI_RES_ENCODING if ( mr_cfg ) { oxcf -> mr_total_resolutions = mr_cfg -> mr_total_resolutions ; oxcf -> mr_encoder_id = mr_cfg -> mr_encoder_id ; oxcf -> mr_down_sampling_factor . num = mr_cfg -> mr_down_sampling_factor . num ; oxcf -> mr_down_sampling_factor . den = mr_cfg -> mr_down_sampling_factor . den ; oxcf -> mr_low_res_mode_info = mr_cfg -> mr_low_res_mode_info ; } <S2SV_StartBug> # endif <S2SV_EndBug> oxcf -> cpu_used = vp8_cfg . cpu_used ; oxcf -> encode_breakout = vp8_cfg . static_thresh ; oxcf -> play_alternate = vp8_cfg . enable_auto_alt_ref ; oxcf -> noise_sensitivity = vp8_cfg . noise_sensitivity ; oxcf -> Sharpness = vp8_cfg . Sharpness ; oxcf -> token_partitions = vp8_cfg . token_partitions ; oxcf -> two_pass_stats_in = cfg . rc_twopass_stats_in ; oxcf -> output_pkt_list = vp8_cfg . pkt_list ; oxcf -> arnr_max_frames = vp8_cfg . arnr_max_frames ; oxcf -> arnr_strength = vp8_cfg . arnr_strength ; oxcf -> arnr_type = vp8_cfg . arnr_type ; <S2SV_StartBug> oxcf -> tuning = vp8_cfg . tuning ; <S2SV_EndBug> return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } # else ( void ) mr_cfg ; # <S2SV_ModStart> vp8_cfg . tuning ; oxcf -> screen_content_mode = vp8_cfg . screen_content_mode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static ssize_t in_read ( struct audio_stream_in * stream , void * buffer , size_t bytes ) { struct a2dp_stream_in * in = ( struct a2dp_stream_in * ) stream ; int read ; DEBUG ( \"read<S2SV_blank>%zu<S2SV_blank>bytes,<S2SV_blank>state:<S2SV_blank>%d\" , bytes , in -> common . state ) ; if ( in -> common . state == AUDIO_A2DP_STATE_SUSPENDED ) { DEBUG ( \"stream<S2SV_blank>suspended\" ) ; return - 1 ; } if ( ( in -> common . state == AUDIO_A2DP_STATE_STOPPED ) || ( in -> common . state == AUDIO_A2DP_STATE_STANDBY ) ) { pthread_mutex_lock ( & in -> common . lock ) ; if ( start_audio_datapath ( & in -> common ) < 0 ) { int us_delay = calc_audiotime ( in -> common . cfg , bytes ) ; DEBUG ( \"emulate<S2SV_blank>a2dp<S2SV_blank>read<S2SV_blank>delay<S2SV_blank>(%d<S2SV_blank>us)\" , us_delay ) ; <S2SV_StartBug> usleep ( us_delay ) ; <S2SV_EndBug> pthread_mutex_unlock ( & in -> common . lock ) ; return - 1 ; } pthread_mutex_unlock ( & in -> common . lock ) ; } else if ( in -> common . state != AUDIO_A2DP_STATE_STARTED ) { ERROR ( \"stream<S2SV_blank>not<S2SV_blank>in<S2SV_blank>stopped<S2SV_blank>or<S2SV_blank>standby\" ) ; return - 1 ; } read = skt_read ( in -> common . audio_fd , buffer , bytes ) ; if ( read == - 1 ) { skt_disconnect ( in -> common . audio_fd ) ; in -> common . audio_fd = AUDIO_SKT_DISCONNECTED ; in -> common . state = AUDIO_A2DP_STATE_STOPPED ; } else if ( read == 0 ) { DEBUG ( \"read<S2SV_blank>time<S2SV_blank>out<S2SV_blank>-<S2SV_blank>return<S2SV_blank>zeros\" ) ; memset ( buffer , 0 , bytes ) ; read = bytes ; } DEBUG ( \"read<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>out<S2SV_blank>of<S2SV_blank>%zu<S2SV_blank>bytes\" , read , bytes ) ; return read ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> us_delay ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> usleep ( us_delay )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t decoder_destroy ( vpx_codec_alg_priv_t * ctx ) { <S2SV_StartBug> if ( ctx -> pbi ) { <S2SV_EndBug> vp9_decoder_remove ( ctx -> pbi ) ; <S2SV_StartBug> ctx -> pbi = NULL ; <S2SV_EndBug> } vpx_free ( ctx ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ctx -> frame_workers != NULL ) { int i ; for ( i = 0 ; i < ctx -> num_frame_workers ; ++ i ) { VPxWorker * const worker = & ctx -> frame_workers [ i ] ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; vpx_get_worker_interface ( ) -> end ( worker ) ; vp9_remove_common ( & frame_worker_data -> pbi -> common ) ; # if CONFIG_VP9_POSTPROC vp9_free_postproc_buffers ( & frame_worker_data -> pbi -> common ) ; # endif vp9_decoder_remove ( frame_worker_data <S2SV_ModEnd> -> pbi ) <S2SV_ModStart> pbi ) ; vpx_free ( frame_worker_data -> scratch_buffer ) ; # if CONFIG_MULTITHREAD pthread_mutex_destroy ( & frame_worker_data -> stats_mutex ) ; pthread_cond_destroy ( & frame_worker_data -> stats_cond ) ; # endif vpx_free ( frame_worker_data ) ; } # if CONFIG_MULTITHREAD pthread_mutex_destroy ( & ctx -> buffer_pool -> pool_mutex ) ; # endif } if ( ctx -> buffer_pool ) { vp9_free_ref_frame_buffers ( ctx -> buffer_pool ) ; vp9_free_internal_frame_buffers ( & ctx -> buffer_pool -> int_frame_buffers ) ; } vpx_free ( ctx -> frame_workers ) ; vpx_free ( ctx -> buffer_pool ) ; <S2SV_ModEnd> vpx_free ( ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5353\n\n```\nCWE-20 static fp_info * fp_set_per_packet_inf_from_conv ( umts_fp_conversation_info_t * p_conv_data , tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree _U_ ) { fp_info * fpi ; guint8 tfi , c_t ; int offset = 0 , i = 0 , j = 0 , num_tbs , chan , tb_size , tb_bit_off ; gboolean is_control_frame ; umts_mac_info * macinf ; rlc_info * rlcinf ; guint8 fake_lchid = 0 ; gint * cur_val = NULL ; fpi = wmem_new0 ( wmem_file_scope ( ) , fp_info ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_fp , 0 , fpi ) ; fpi -> iface_type = p_conv_data -> iface_type ; fpi -> division = p_conv_data -> division ; fpi -> release = 7 ; fpi -> release_year = 2006 ; fpi -> release_month = 12 ; fpi -> channel = p_conv_data -> channel ; fpi -> dch_crc_present = p_conv_data -> dch_crc_present ; fpi -> link_type = FP_Link_Ethernet ; # if 0 if ( ! pinfo -> fd -> flags . visited && p_conv_data -> reset_frag ) { fpi -> reset_frag = p_conv_data -> reset_frag ; p_conv_data -> reset_frag = FALSE ; } # endif fpi -> srcport = pinfo -> srcport ; fpi -> destport = pinfo -> destport ; fpi -> com_context_id = p_conv_data -> com_context_id ; if ( pinfo -> link_dir == P2P_DIR_UL ) { fpi -> is_uplink = TRUE ; } else { fpi -> is_uplink = FALSE ; } is_control_frame = tvb_get_guint8 ( tvb , offset ) & 0x01 ; switch ( fpi -> channel ) { case CHANNEL_HSDSCH : fpi -> hsdsch_entity = p_conv_data -> hsdsch_entity ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; fpi -> hsdsch_macflowd_id = p_conv_data -> hsdsch_macdflow_id ; macinf -> content [ 0 ] = hsdsch_macdflow_id_mac_content_map [ p_conv_data -> hsdsch_macdflow_id ] ; macinf -> lchid [ 0 ] = p_conv_data -> hsdsch_macdflow_id ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; rlcinf -> mode [ 0 ] = hsdsch_macdflow_id_rlc_map [ p_conv_data -> hsdsch_macdflow_id ] ; if ( fpi -> hsdsch_entity == hs ) { for ( i = 0 ; i < MAX_NUM_HSDHSCH_MACDFLOW ; i ++ ) { if ( ( cur_val = ( gint * ) g_tree_lookup ( hsdsch_muxed_flows , GINT_TO_POINTER ( ( gint ) p_conv_data -> hrnti ) ) ) != NULL ) { j = 1 << i ; fpi -> hsdhsch_macfdlow_is_mux [ i ] = j & * cur_val ; } else { fpi -> hsdhsch_macfdlow_is_mux [ i ] = FALSE ; } } } rlcinf -> urnti [ 0 ] = fpi -> com_context_id ; rlcinf -> li_size [ 0 ] = RLC_LI_7BITS ; rlcinf -> ciphered [ 0 ] = FALSE ; rlcinf -> deciphered [ 0 ] = FALSE ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; return fpi ; case CHANNEL_EDCH : macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; fpi -> no_ddi_entries = p_conv_data -> no_ddi_entries ; for ( i = 0 ; i < fpi -> no_ddi_entries ; i ++ ) { fpi -> edch_ddi [ i ] = p_conv_data -> edch_ddi [ i ] ; fpi -> edch_macd_pdu_size [ i ] = p_conv_data -> edch_macd_pdu_size [ i ] ; fpi -> edch_lchId [ i ] = p_conv_data -> edch_lchId [ i ] ; } fpi -> edch_type = p_conv_data -> edch_type ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; rlcinf -> urnti [ 0 ] = fpi -> com_context_id ; rlcinf -> li_size [ 0 ] = RLC_LI_7BITS ; rlcinf -> ciphered [ 0 ] = FALSE ; rlcinf -> deciphered [ 0 ] = FALSE ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; return fpi ; case CHANNEL_PCH : fpi -> paging_indications = p_conv_data -> paging_indications ; fpi -> num_chans = p_conv_data -> num_dch_in_flow ; if ( is_control_frame ) { return fpi ; } offset = 3 ; break ; case CHANNEL_DCH : fpi -> num_chans = p_conv_data -> num_dch_in_flow ; if ( is_control_frame ) { return fpi ; } rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; offset = 2 ; fakes = 5 ; for ( chan = 0 ; chan < fpi -> num_chans ; chan ++ ) { tfi = tvb_get_bits8 ( tvb , 3 + offset * 8 , 5 ) ; num_tbs = ( fpi -> is_uplink ) ? p_conv_data -> fp_dch_channel_info [ chan ] . ul_chan_num_tbs [ tfi ] : p_conv_data -> fp_dch_channel_info [ chan ] . dl_chan_num_tbs [ tfi ] ; tb_size = ( fpi -> is_uplink ) ? p_conv_data -> fp_dch_channel_info [ i ] . ul_chan_tf_size [ tfi ] : p_conv_data -> fp_dch_channel_info [ i ] . dl_chan_tf_size [ tfi ] ; if ( p_conv_data -> dchs_in_flow_list [ chan ] != 31 && ( p_conv_data -> dchs_in_flow_list [ chan ] == 24 && tb_size != 340 ) ) { fake_lchid = make_fake_lchid ( pinfo , p_conv_data -> dchs_in_flow_list [ chan ] ) ; } tb_bit_off = ( 2 + p_conv_data -> num_dch_in_flow ) * 8 ; for ( j = 0 ; j < num_tbs && j + chan < MAX_MAC_FRAMES ; j ++ ) { macinf -> trchid [ j + chan ] = p_conv_data -> dchs_in_flow_list [ chan ] ; if ( p_conv_data -> dchs_in_flow_list [ chan ] == 31 || p_conv_data -> dchs_in_flow_list [ chan ] == 24 ) { if ( 0 ) { macinf -> ctmux [ j + chan ] = FALSE ; macinf -> lchid [ j + chan ] = 1 ; macinf -> content [ j + chan ] = lchId_type_table [ 1 ] ; rlcinf -> mode [ j + chan ] = lchId_rlc_map [ 1 ] ; } else if ( p_conv_data -> dchs_in_flow_list [ chan ] == 24 && tb_size != 340 ) { macinf -> ctmux [ j + chan ] = FALSE ; macinf -> lchid [ j + chan ] = fake_lchid ; macinf -> fake_chid [ j + chan ] = TRUE ; macinf -> content [ j + chan ] = MAC_CONTENT_PS_DTCH ; rlcinf -> mode [ j + chan ] = RLC_AM ; } else { macinf -> ctmux [ j + chan ] = TRUE ; <S2SV_StartBug> c_t = tvb_get_bits8 ( tvb , tb_bit_off , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> macinf -> lchid [ j + chan ] = c_t + 1 ; <S2SV_EndBug> <S2SV_StartBug> macinf -> content [ j + chan ] = lchId_type_table [ c_t + 1 ] ; <S2SV_EndBug> <S2SV_StartBug> rlcinf -> mode [ j + chan ] = lchId_rlc_map [ c_t + 1 ] ; <S2SV_EndBug> } } else { fake_lchid = make_fake_lchid ( pinfo , p_conv_data -> dchs_in_flow_list [ chan ] ) ; macinf -> ctmux [ j + chan ] = FALSE ; macinf -> content [ j + chan ] = lchId_type_table [ fake_lchid ] ; rlcinf -> mode [ j + chan ] = lchId_rlc_map [ fake_lchid ] ; macinf -> fake_chid [ j + chan ] = TRUE ; macinf -> lchid [ j + chan ] = fake_lchid ; } rlcinf -> urnti [ j + chan ] = p_conv_data -> com_context_id ; rlcinf -> li_size [ j + chan ] = RLC_LI_7BITS ; # if 0 if ( rrc_ciph_inf && g_tree_lookup ( rrc_ciph_inf , GINT_TO_POINTER ( ( gint ) p_conv_data -> com_context_id ) ) != NULL ) { rlcinf -> ciphered [ j + chan ] = TRUE ; } else { rlcinf -> ciphered [ j + chan ] = FALSE ; } # endif rlcinf -> ciphered [ j + chan ] = FALSE ; rlcinf -> deciphered [ j + chan ] = FALSE ; rlcinf -> rbid [ j + chan ] = macinf -> lchid [ j + chan ] ; tb_bit_off += tb_size + 4 ; } offset ++ ; } p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; offset = 2 ; break ; case CHANNEL_FACH_FDD : fpi -> num_chans = p_conv_data -> num_dch_in_flow ; if ( is_control_frame ) { return fpi ; } offset = 2 ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; macinf -> ctmux [ 0 ] = 1 ; macinf -> content [ 0 ] = MAC_CONTENT_DCCH ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; rlcinf -> urnti [ 0 ] = fpi -> channel ; rlcinf -> mode [ 0 ] = RLC_AM ; rlcinf -> li_size [ 0 ] = RLC_LI_7BITS ; rlcinf -> ciphered [ 0 ] = FALSE ; rlcinf -> deciphered [ 0 ] = FALSE ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; break ; case CHANNEL_RACH_FDD : fpi -> num_chans = p_conv_data -> num_dch_in_flow ; if ( is_control_frame ) { return fpi ; } offset = 2 ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; for ( chan = 0 ; chan < fpi -> num_chans ; chan ++ ) { macinf -> ctmux [ chan ] = 1 ; macinf -> content [ chan ] = MAC_CONTENT_DCCH ; rlcinf -> urnti [ chan ] = fpi -> com_context_id ; } p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; break ; case CHANNEL_HSDSCH_COMMON : rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; break ; default : expert_add_info ( pinfo , NULL , & ei_fp_transport_channel_type_unknown ) ; return NULL ; } for ( i = 0 ; i < fpi -> num_chans ; i ++ ) { tfi = tvb_get_guint8 ( tvb , offset ) ; if ( pinfo -> link_dir == P2P_DIR_UL ) { fpi -> chan_tf_size [ i ] = p_conv_data -> fp_dch_channel_info [ i ] . ul_chan_tf_size [ tfi ] ; fpi -> chan_num_tbs [ i ] = p_conv_data -> fp_dch_channel_info [ i ] . ul_chan_num_tbs [ tfi ] ; } else { fpi -> chan_tf_size [ i ] = p_conv_data -> fp_dch_channel_info [ i ] . dl_chan_tf_size [ tfi ] ; fpi -> chan_num_tbs [ i ] = p_conv_data -> fp_dch_channel_info [ i ] . dl_chan_num_tbs [ tfi ] ; } offset ++ ; } return fpi ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; c_t = ( <S2SV_ModStart> , 4 ) + 1 ) % 0xf <S2SV_ModStart> ] = c_t <S2SV_ModEnd> ; macinf -> <S2SV_ModStart> lchId_type_table [ c_t <S2SV_ModEnd> ] ; rlcinf <S2SV_ModStart> lchId_rlc_map [ c_t <S2SV_ModEnd> ] ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_stmt ( void * _o ) { stmt_ty o = ( stmt_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { Py_RETURN_NONE ; } switch ( o -> kind ) { case FunctionDef_kind : result = PyType_GenericNew ( FunctionDef_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . FunctionDef . name ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_name , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_arguments ( o -> v . FunctionDef . args ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_args , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . FunctionDef . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . FunctionDef . decorator_list , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_decorator_list , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . FunctionDef . returns ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_returns , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case AsyncFunctionDef_kind : result = PyType_GenericNew ( AsyncFunctionDef_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . AsyncFunctionDef . name ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_name , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_arguments ( o -> v . AsyncFunctionDef . args ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_args , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncFunctionDef . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncFunctionDef . decorator_list , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_decorator_list , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AsyncFunctionDef . returns ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_returns , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case ClassDef_kind : result = PyType_GenericNew ( ClassDef_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . ClassDef . name ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_name , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ClassDef . bases , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_bases , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ClassDef . keywords , ast2obj_keyword ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_keywords , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ClassDef . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ClassDef . decorator_list , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_decorator_list , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Return_kind : result = PyType_GenericNew ( Return_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Return . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Delete_kind : result = PyType_GenericNew ( Delete_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Delete . targets , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_targets , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Assign_kind : result = PyType_GenericNew ( Assign_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Assign . targets , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_targets , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Assign . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case AugAssign_kind : result = PyType_GenericNew ( AugAssign_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . AugAssign . target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_operator ( o -> v . AugAssign . op ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_op , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AugAssign . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case AnnAssign_kind : result = PyType_GenericNew ( AnnAssign_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . AnnAssign . target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AnnAssign . annotation ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_annotation , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AnnAssign . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> v . AnnAssign . simple ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_simple , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case For_kind : result = PyType_GenericNew ( For_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . For . target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . For . iter ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_iter , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . For . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . For . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case AsyncFor_kind : result = PyType_GenericNew ( AsyncFor_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . AsyncFor . target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AsyncFor . iter ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_iter , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncFor . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncFor . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case While_kind : result = PyType_GenericNew ( While_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . While . test ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_test , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . While . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . While . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case If_kind : result = PyType_GenericNew ( If_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . If . test ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_test , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . If . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . If . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case With_kind : result = PyType_GenericNew ( With_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . With . items , ast2obj_withitem ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_items , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . With . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case AsyncWith_kind : result = PyType_GenericNew ( AsyncWith_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . AsyncWith . items , ast2obj_withitem ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_items , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncWith . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case Raise_kind : result = PyType_GenericNew ( Raise_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Raise . exc ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_exc , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Raise . cause ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_cause , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Try_kind : result = PyType_GenericNew ( Try_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Try . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Try . handlers , ast2obj_excepthandler ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_handlers , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Try . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Try . finalbody , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_finalbody , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Assert_kind : result = PyType_GenericNew ( Assert_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Assert . test ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_test , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Assert . msg ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_msg , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Import_kind : result = PyType_GenericNew ( Import_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Import . names , ast2obj_alias ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_names , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case ImportFrom_kind : result = PyType_GenericNew ( ImportFrom_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . ImportFrom . module ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_module , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ImportFrom . names , ast2obj_alias ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_names , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> v . ImportFrom . level ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_level , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Global_kind : result = PyType_GenericNew ( Global_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Global . names , ast2obj_identifier ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_names , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Nonlocal_kind : result = PyType_GenericNew ( Nonlocal_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Nonlocal . names , ast2obj_identifier ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_names , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Expr_kind : result = PyType_GenericNew ( Expr_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Expr . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Pass_kind : result = PyType_GenericNew ( Pass_type , NULL , NULL ) ; if ( ! result ) goto failed ; break ; case Break_kind : result = PyType_GenericNew ( Break_type , NULL , NULL ) ; if ( ! result ) goto failed ; break ; case Continue_kind : result = PyType_GenericNew ( Continue_type , NULL , NULL ) ; if ( ! result ) goto failed ; break ; } value = ast2obj_int ( o -> lineno ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_lineno , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> col_offset ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_col_offset , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> end_lineno ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_end_lineno , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> end_col_offset ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_end_col_offset , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) ; value = ast2obj_string ( o -> v . FunctionDef . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_ModStart> value ) ; value = ast2obj_string ( o -> v . AsyncFunctionDef . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_ModStart> value ) ; value = ast2obj_string ( o -> v . Assign . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_ModStart> value ) ; value = ast2obj_string ( o -> v . For . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_ModStart> value ) ; value = ast2obj_string ( o -> v . AsyncFor . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_ModStart> value ) ; value = ast2obj_string ( o -> v . With . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_ModStart> value ) ; value = ast2obj_string ( o -> v . AsyncWith . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-273(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18276\n\n```\nCWE-273 void disable_priv_mode ( ) { int e ; <S2SV_StartBug> if ( setuid ( current_user . uid ) < 0 ) <S2SV_EndBug> { e = errno ; sys_error ( _ ( \"cannot<S2SV_blank>set<S2SV_blank>uid<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>effective<S2SV_blank>uid<S2SV_blank>%d\" ) , current_user . uid , current_user . euid ) ; # if defined ( EXIT_ON_SETUID_FAILURE ) if ( e == EAGAIN ) exit ( e ) ; # endif } <S2SV_StartBug> if ( setgid ( current_user . gid ) < 0 ) <S2SV_EndBug> sys_error ( _ ( \"cannot<S2SV_blank>set<S2SV_blank>gid<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>effective<S2SV_blank>gid<S2SV_blank>%d\" ) , current_user . gid , current_user . egid ) ; current_user . euid = current_user . uid ; current_user . egid = current_user . gid ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int e ; # if HAVE_DECL_SETRESUID if ( setresuid ( current_user . uid , current_user . uid , current_user . uid ) < 0 ) # else <S2SV_ModStart> < 0 ) # endif <S2SV_ModStart> # endif } # if HAVE_DECL_SETRESGID if ( setresgid ( current_user . gid , current_user . gid , current_user . gid ) < 0 ) # else <S2SV_ModStart> < 0 ) # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5352\n\n```\nCWE-000 OM_uint32 kg_seal_iov ( OM_uint32 * minor_status , gss_ctx_id_t context_handle , int conf_req_flag , gss_qop_t qop_req , int * conf_state , gss_iov_buffer_desc * iov , int iov_count , int toktype ) { krb5_gss_ctx_id_rec * ctx ; krb5_error_code code ; krb5_context context ; if ( qop_req != 0 ) { * minor_status = ( OM_uint32 ) G_UNKNOWN_QOP ; return GSS_S_FAILURE ; } ctx = ( krb5_gss_ctx_id_rec * ) context_handle ; <S2SV_StartBug> if ( ! ctx -> established ) { <S2SV_EndBug> * minor_status = KG_CTX_INCOMPLETE ; return GSS_S_NO_CONTEXT ; } if ( conf_req_flag && kg_integ_only_iov ( iov , iov_count ) ) { conf_req_flag = FALSE ; } context = ctx -> k5_context ; switch ( ctx -> proto ) { case 0 : code = make_seal_token_v1_iov ( context , ctx , conf_req_flag , conf_state , iov , iov_count , toktype ) ; break ; case 1 : code = gss_krb5int_make_seal_token_v3_iov ( context , ctx , conf_req_flag , conf_state , iov , iov_count , toktype ) ; break ; default : code = G_UNKNOWN_QOP ; break ; } if ( code != 0 ) { * minor_status = code ; save_error_info ( * minor_status , context ) ; return GSS_S_FAILURE ; } * minor_status = 0 ; return GSS_S_COMPLETE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ctx -> terminated ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_withitem ( PyObject * obj , withitem_ty * out , PyArena * arena ) { PyObject * tmp = NULL ; expr_ty context_expr ; expr_ty optional_vars ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_context_expr ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_context_expr ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & context_expr , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"context_expr\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>withitem\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_optional_vars ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_optional_vars ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & optional_vars , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { optional_vars = NULL ; } * out = withitem ( context_expr , optional_vars , arena ) ; return 0 ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_context_expr , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"context_expr\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>withitem\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & context_expr , arena ) ; if ( res != 0 <S2SV_ModEnd> ) goto failed <S2SV_ModStart> goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_optional_vars , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; optional_vars = NULL ; } else { int res ; <S2SV_ModStart> tmp , & optional_vars <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } <S2SV_ModEnd> * out =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 long keyctl_read_key ( key_serial_t keyid , char __user * buffer , size_t buflen ) { struct key * key ; key_ref_t key_ref ; long ret ; key_ref = lookup_user_key ( keyid , 0 , 0 ) ; if ( IS_ERR ( key_ref ) ) { ret = - ENOKEY ; goto error ; } key = key_ref_to_ptr ( key_ref ) ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) { <S2SV_EndBug> ret = - ENOKEY ; goto error2 ; } ret = key_permission ( key_ref , KEY_NEED_READ ) ; if ( ret == 0 ) goto can_read_key ; if ( ret != - EACCES ) goto error2 ; if ( ! is_key_possessed ( key_ref ) ) { ret = - EACCES ; goto error2 ; } can_read_key : ret = - EOPNOTSUPP ; if ( key -> type -> read ) { down_read ( & key -> sem ) ; ret = key_validate ( key ) ; if ( ret == 0 ) ret = key -> type -> read ( key , buffer , buflen ) ; up_read ( & key -> sem ) ; } error2 : key_put ( key ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> key_ref ) ; ret = key_read_state ( key ) ; if ( ret < 0 ) goto error2 ; <S2SV_ModEnd> ret = key_permission\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3045\n\n```\nCWE-189 static png_size_t png_inflate ( png_structp png_ptr , const png_byte * data , png_size_t size , png_bytep output , png_size_t output_size ) { png_size_t count = 0 ; png_ptr -> zstream . next_in = ( png_bytep ) data ; png_ptr -> zstream . avail_in = size ; while ( 1 ) { int ret , avail ; png_ptr -> zstream . next_out = png_ptr -> zbuf ; png_ptr -> zstream . avail_out = png_ptr -> zbuf_size ; ret = inflate ( & png_ptr -> zstream , Z_NO_FLUSH ) ; avail = png_ptr -> zbuf_size - png_ptr -> zstream . avail_out ; if ( ( ret == Z_OK || ret == Z_STREAM_END ) && avail > 0 ) { if ( output != 0 && output_size > count ) { <S2SV_StartBug> int copy = output_size - count ; <S2SV_EndBug> <S2SV_StartBug> if ( avail < copy ) copy = avail ; <S2SV_EndBug> png_memcpy ( output + count , png_ptr -> zbuf , copy ) ; } count += avail ; } if ( ret == Z_OK ) continue ; png_ptr -> zstream . avail_in = 0 ; inflateReset ( & png_ptr -> zstream ) ; if ( ret == Z_STREAM_END ) return count ; { PNG_CONST char * msg ; if ( png_ptr -> zstream . msg != 0 ) msg = png_ptr -> zstream . msg ; else { # if defined ( PNG_STDIO_SUPPORTED ) && ! defined ( _WIN32_WCE ) char umsg [ 52 ] ; switch ( ret ) { case Z_BUF_ERROR : msg = \"Buffer<S2SV_blank>error<S2SV_blank>in<S2SV_blank>compressed<S2SV_blank>datastream<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>chunk\" ; break ; case Z_DATA_ERROR : msg = \"Data<S2SV_blank>error<S2SV_blank>in<S2SV_blank>compressed<S2SV_blank>datastream<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>chunk\" ; break ; default : msg = \"Incomplete<S2SV_blank>compressed<S2SV_blank>datastream<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>chunk\" ; break ; } png_snprintf ( umsg , sizeof umsg , msg , png_ptr -> chunk_name ) ; msg = umsg ; # else msg = \"Damaged<S2SV_blank>compressed<S2SV_blank>datastream<S2SV_blank>in<S2SV_blank>chunk<S2SV_blank>other<S2SV_blank>than<S2SV_blank>IDAT\" ; # endif } png_warning ( png_ptr , msg ) ; } return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count ) { png_size_t <S2SV_ModEnd> copy = output_size <S2SV_ModStart> ; if ( ( png_size_t ) <S2SV_ModStart> ) copy = ( png_size_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10251\n\n```\nCWE-190 static int jpc_pi_nextcprl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; uint_fast32_t trx0 ; uint_fast32_t try0 ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> prgvolfirst = 0 ; } for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < JAS_CAST ( int , pchg -> compnoend ) && pi -> compno < pi -> numcomps ; ++ pi -> compno , ++ pi -> picomp ) { pirlvl = pi -> picomp -> pirlvls ; <S2SV_StartBug> pi -> xstep = pi -> picomp -> hsamp * ( 1 << ( pirlvl -> prcwidthexpn + <S2SV_EndBug> pi -> picomp -> numrlvls - 1 ) ) ; <S2SV_StartBug> pi -> ystep = pi -> picomp -> vsamp * ( 1 << ( pirlvl -> prcheightexpn + <S2SV_EndBug> pi -> picomp -> numrlvls - 1 ) ) ; for ( rlvlno = 1 , pirlvl = & pi -> picomp -> pirlvls [ 1 ] ; rlvlno < pi -> picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { <S2SV_StartBug> pi -> xstep = JAS_MIN ( pi -> xstep , pi -> picomp -> hsamp * ( 1 << <S2SV_EndBug> ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls - rlvlno - 1 ) ) ) ; <S2SV_StartBug> pi -> ystep = JAS_MIN ( pi -> ystep , pi -> picomp -> vsamp * ( 1 << <S2SV_EndBug> ( pirlvl -> prcheightexpn + pi -> picomp -> numrlvls - rlvlno - 1 ) ) ) ; } for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> rlvlno = pchg -> rlvlnostart , pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; pi -> rlvlno < pi -> picomp -> numrlvls && pi -> rlvlno < pchg -> rlvlnoend ; ++ pi -> rlvlno , ++ pi -> pirlvl ) { if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( 1 << rpx ) ) ) || ! ( pi -> x % ( pi -> picomp -> hsamp << rpx ) ) ) && ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( 1 << rpy ) ) ) || ! ( pi -> y % ( pi -> picomp -> vsamp << rpy ) ) ) ) { prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> -> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> -> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3188\n\n```\nCWE-000 unsigned int get_random_int ( void ) { <S2SV_StartBug> struct keydata * keyptr ; <S2SV_EndBug> __u32 * hash = get_cpu_var ( get_random_int_hash ) ; <S2SV_StartBug> int ret ; <S2SV_EndBug> keyptr = get_keyptr ( ) ; hash [ 0 ] += current -> pid + jiffies + get_cycles ( ) ; <S2SV_StartBug> ret = half_md4_transform ( hash , keyptr -> secret ) ; <S2SV_EndBug> put_cpu_var ( get_random_int_hash ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { <S2SV_ModEnd> __u32 * hash <S2SV_ModStart> get_random_int_hash ) ; unsigned int ret <S2SV_ModEnd> ; hash [ <S2SV_ModStart> ( ) ; md5_transform <S2SV_ModEnd> ( hash , <S2SV_ModStart> ( hash , random_int_secret ) ; ret = hash [ 0 ] <S2SV_ModEnd> ; put_cpu_var (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15537\n\n```\nCWE-200 static int __fpu__restore_sig ( void __user * buf , void __user * buf_fx , int size ) { int ia32_fxstate = ( buf != buf_fx ) ; struct task_struct * tsk = current ; struct fpu * fpu = & tsk -> thread . fpu ; int state_size = fpu_kernel_xstate_size ; u64 xfeatures = 0 ; int fx_only = 0 ; ia32_fxstate &= ( IS_ENABLED ( CONFIG_X86_32 ) || IS_ENABLED ( CONFIG_IA32_EMULATION ) ) ; if ( ! buf ) { fpu__clear ( fpu ) ; return 0 ; } if ( ! access_ok ( VERIFY_READ , buf , size ) ) return - EACCES ; fpu__activate_curr ( fpu ) ; if ( ! static_cpu_has ( X86_FEATURE_FPU ) ) return fpregs_soft_set ( current , NULL , 0 , sizeof ( struct user_i387_ia32_struct ) , NULL , buf ) != 0 ; if ( use_xsave ( ) ) { struct _fpx_sw_bytes fx_sw_user ; if ( unlikely ( check_for_xstate ( buf_fx , buf_fx , & fx_sw_user ) ) ) { state_size = sizeof ( struct fxregs_state ) ; fx_only = 1 ; trace_x86_fpu_xstate_check_failed ( fpu ) ; } else { state_size = fx_sw_user . xstate_size ; xfeatures = fx_sw_user . xfeatures ; } } if ( ia32_fxstate ) { struct fpu * fpu = & tsk -> thread . fpu ; struct user_i387_ia32_struct env ; int err = 0 ; fpu__drop ( fpu ) ; <S2SV_StartBug> if ( using_compacted_format ( ) ) <S2SV_EndBug> err = copy_user_to_xstate ( & fpu -> state . xsave , buf_fx ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> err = __copy_from_user ( & fpu -> state . xsave , buf_fx , state_size ) ; <S2SV_EndBug> if ( err || __copy_from_user ( & env , buf , sizeof ( env ) ) ) { fpstate_init ( & fpu -> state ) ; trace_x86_fpu_init_state ( fpu ) ; err = - 1 ; } else { sanitize_restored_xstate ( tsk , & env , xfeatures , fx_only ) ; } fpu -> fpstate_active = 1 ; preempt_disable ( ) ; fpu__restore ( fpu ) ; preempt_enable ( ) ; return err ; } else { user_fpu_begin ( ) ; if ( copy_user_to_fpregs_zeroing ( buf_fx , xfeatures , fx_only ) ) { fpu__clear ( fpu ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ) { <S2SV_ModStart> buf_fx ) ; } else { <S2SV_ModEnd> err = __copy_from_user <S2SV_ModStart> state_size ) ; if ( ! err && state_size > offsetof ( struct xregs_state , header ) && fpu -> state . xsave . header . xcomp_bv ) err = - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> swabHorAcc32 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { uint32 * wp = ( uint32 * ) cp0 ; tmsize_t wc = cc / 4 ; TIFFSwabArrayOfLong ( wp , wc ) ; <S2SV_StartBug> horAcc32 ( tif , cp0 , cc ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> swabHorAcc32 ( TIFF <S2SV_ModStart> wc ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10192\n\n```\nCWE-119 static int http_receive_data ( HTTPContext * c ) { HTTPContext * c1 ; int len , loop_run = 0 ; while ( c -> chunked_encoding && ! c -> chunk_size && c -> buffer_end > c -> buffer_ptr ) { len = recv ( c -> fd , c -> buffer_ptr , 1 , 0 ) ; if ( len < 0 ) { if ( ff_neterrno ( ) != AVERROR ( EAGAIN ) && ff_neterrno ( ) != AVERROR ( EINTR ) ) goto fail ; return 0 ; } else if ( len == 0 ) { goto fail ; } else if ( c -> buffer_ptr - c -> buffer >= 2 && ! memcmp ( c -> buffer_ptr - 1 , \"\\\\r\\\\n\" , 2 ) ) { c -> chunk_size = strtol ( c -> buffer , 0 , 16 ) ; <S2SV_StartBug> if ( c -> chunk_size == 0 ) <S2SV_EndBug> goto fail ; c -> buffer_ptr = c -> buffer ; break ; } else if ( ++ loop_run > 10 ) goto fail ; else c -> buffer_ptr ++ ; } if ( c -> buffer_end > c -> buffer_ptr ) { len = recv ( c -> fd , c -> buffer_ptr , FFMIN ( c -> chunk_size , c -> buffer_end - c -> buffer_ptr ) , 0 ) ; if ( len < 0 ) { if ( ff_neterrno ( ) != AVERROR ( EAGAIN ) && ff_neterrno ( ) != AVERROR ( EINTR ) ) goto fail ; } else if ( len == 0 ) goto fail ; <S2SV_StartBug> else { <S2SV_EndBug> c -> chunk_size -= len ; c -> buffer_ptr += len ; c -> data_count += len ; update_datarate ( & c -> datarate , c -> data_count ) ; } } if ( c -> buffer_ptr - c -> buffer >= 2 && c -> data_count > FFM_PACKET_SIZE ) { if ( c -> buffer [ 0 ] != 'f' || c -> buffer [ 1 ] != 'm' ) { http_log ( \"Feed<S2SV_blank>stream<S2SV_blank>has<S2SV_blank>become<S2SV_blank>desynchronized<S2SV_blank>--<S2SV_blank>disconnecting\\\\n\" ) ; goto fail ; } } if ( c -> buffer_ptr >= c -> buffer_end ) { FFServerStream * feed = c -> stream ; if ( c -> data_count > FFM_PACKET_SIZE ) { if ( lseek ( c -> feed_fd , feed -> feed_write_index , SEEK_SET ) == - 1 ) http_log ( \"Seek<S2SV_blank>to<S2SV_blank>%\" PRId64 \"<S2SV_blank>failed\\\\n\" , feed -> feed_write_index ) ; if ( write ( c -> feed_fd , c -> buffer , FFM_PACKET_SIZE ) < 0 ) { http_log ( \"Error<S2SV_blank>writing<S2SV_blank>to<S2SV_blank>feed<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; goto fail ; } feed -> feed_write_index += FFM_PACKET_SIZE ; if ( feed -> feed_write_index > c -> stream -> feed_size ) feed -> feed_size = feed -> feed_write_index ; if ( c -> stream -> feed_max_size && feed -> feed_write_index >= c -> stream -> feed_max_size ) feed -> feed_write_index = FFM_PACKET_SIZE ; if ( ffm_write_write_index ( c -> feed_fd , feed -> feed_write_index ) < 0 ) { http_log ( \"Error<S2SV_blank>writing<S2SV_blank>index<S2SV_blank>to<S2SV_blank>feed<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; goto fail ; } for ( c1 = first_http_ctx ; c1 ; c1 = c1 -> next ) { if ( c1 -> state == HTTPSTATE_WAIT_FEED && c1 -> stream -> feed == c -> stream -> feed ) c1 -> state = HTTPSTATE_SEND_DATA ; } } else { AVFormatContext * s = avformat_alloc_context ( ) ; AVIOContext * pb ; AVInputFormat * fmt_in ; int i ; if ( ! s ) goto fail ; fmt_in = av_find_input_format ( feed -> fmt -> name ) ; if ( ! fmt_in ) goto fail ; pb = avio_alloc_context ( c -> buffer , c -> buffer_end - c -> buffer , 0 , NULL , NULL , NULL , NULL ) ; if ( ! pb ) goto fail ; pb -> seekable = 0 ; s -> pb = pb ; if ( avformat_open_input ( & s , c -> stream -> feed_filename , fmt_in , NULL ) < 0 ) { av_freep ( & pb ) ; goto fail ; } if ( s -> nb_streams != feed -> nb_streams ) { avformat_close_input ( & s ) ; av_freep ( & pb ) ; http_log ( \"Feed<S2SV_blank>\\'%s\\'<S2SV_blank>stream<S2SV_blank>number<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>registered<S2SV_blank>feed\\\\n\" , c -> stream -> feed_filename ) ; goto fail ; } for ( i = 0 ; i < s -> nb_streams ; i ++ ) { LayeredAVStream * fst = feed -> streams [ i ] ; AVStream * st = s -> streams [ i ] ; avcodec_parameters_to_context ( fst -> codec , st -> codecpar ) ; avcodec_parameters_from_context ( fst -> codecpar , fst -> codec ) ; } avformat_close_input ( & s ) ; av_freep ( & pb ) ; } c -> buffer_ptr = c -> buffer ; } return 0 ; fail : c -> stream -> feed_opened = 0 ; close ( c -> feed_fd ) ; for ( c1 = first_http_ctx ; c1 ; c1 = c1 -> next ) { if ( c1 -> state == HTTPSTATE_WAIT_FEED && c1 -> stream -> feed == c -> stream -> feed ) c1 -> state = HTTPSTATE_SEND_DATA_TRAILER ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c -> chunk_size <= 0 ) { c -> chunk_size = 0 ; goto fail ; } <S2SV_ModEnd> c -> buffer_ptr <S2SV_ModStart> ; else { av_assert0 ( len <= c -> chunk_size ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16643\n\n```\nCWE-20 static Image * ReadPICTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowPICTException ( exception , message ) { if ( tile_image != ( Image * ) NULL ) tile_image = DestroyImage ( tile_image ) ; if ( read_info != ( ImageInfo * ) NULL ) read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( ( exception ) , ( message ) ) ; } <S2SV_EndBug> char geometry [ MagickPathExtent ] , header_ole [ 4 ] ; Image * image , * tile_image ; ImageInfo * read_info ; int c , code ; MagickBooleanType jpeg , status ; PICTRectangle frame ; PICTPixmap pixmap ; Quantum index ; register Quantum * q ; register ssize_t i , x ; size_t extent , length ; ssize_t count , flags , j , version , y ; StringInfo * profile ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } read_info = ( ImageInfo * ) NULL ; tile_image = ( Image * ) NULL ; pixmap . bits_per_pixel = 0 ; pixmap . component_count = 0 ; header_ole [ 0 ] = ReadBlobByte ( image ) ; header_ole [ 1 ] = ReadBlobByte ( image ) ; header_ole [ 2 ] = ReadBlobByte ( image ) ; header_ole [ 3 ] = ReadBlobByte ( image ) ; if ( ! ( ( header_ole [ 0 ] == 0x50 ) && ( header_ole [ 1 ] == 0x49 ) && ( header_ole [ 2 ] == 0x43 ) && ( header_ole [ 3 ] == 0x54 ) ) ) for ( i = 0 ; i < 508 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; ( void ) ReadBlobMSBShort ( image ) ; if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; while ( ( c = ReadBlobByte ( image ) ) == 0 ) ; if ( c != 0x11 ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; version = ( ssize_t ) ReadBlobByte ( image ) ; if ( version == 2 ) { c = ReadBlobByte ( image ) ; if ( c != 0xff ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; } else if ( version != 1 ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( frame . left < 0 ) || ( frame . right < 0 ) || ( frame . top < 0 ) || ( frame . bottom < 0 ) || ( frame . left >= frame . right ) || ( frame . top >= frame . bottom ) ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; flags = 0 ; image -> depth = 8 ; image -> columns = ( size_t ) ( frame . right - frame . left ) ; image -> rows = ( size_t ) ( frame . bottom - frame . top ) ; image -> resolution . x = DefaultResolution ; image -> resolution . y = DefaultResolution ; image -> units = UndefinedResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status != MagickFalse ) status = ResetImagePixels ( image , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; jpeg = MagickFalse ; for ( code = 0 ; EOFBlob ( image ) == MagickFalse ; ) { if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( ( version == 1 ) || ( ( TellBlob ( image ) % 2 ) != 0 ) ) code = ReadBlobByte ( image ) ; if ( version == 2 ) code = ReadBlobMSBSignedShort ( image ) ; if ( code < 0 ) break ; if ( code == 0 ) continue ; if ( code > 0xa1 ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"%04X:\" , code ) ; } else { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>%04X<S2SV_blank>%s:<S2SV_blank>%s\" , code , codes [ code ] . name , codes [ code ] . description ) ; switch ( code ) { case 0x01 : { length = ReadBlobMSBShort ( image ) ; if ( length != 0x000a ) { for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( ( frame . left & 0x8000 ) != 0 ) || ( ( frame . top & 0x8000 ) != 0 ) ) break ; image -> columns = ( size_t ) ( frame . right - frame . left ) ; image -> rows = ( size_t ) ( frame . bottom - frame . top ) ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status != MagickFalse ) status = ResetImagePixels ( image , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; break ; } case 0x12 : case 0x13 : case 0x14 : { ssize_t pattern ; size_t height , width ; pattern = ( ssize_t ) ReadBlobMSBShort ( image ) ; for ( i = 0 ; i < 8 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; if ( pattern == 2 ) { for ( i = 0 ; i < 5 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } if ( pattern != 1 ) ThrowPICTException ( CorruptImageError , \"UnknownPatternType\" ) ; length = ReadBlobMSBShort ( image ) ; if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ReadPixmap ( image , & pixmap ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> depth = ( size_t ) pixmap . component_size ; image -> resolution . x = 1.0 * pixmap . horizontal_resolution ; image -> resolution . y = 1.0 * pixmap . vertical_resolution ; image -> units = PixelsPerInchResolution ; ( void ) ReadBlobMSBLong ( image ) ; flags = ( ssize_t ) ReadBlobMSBShort ( image ) ; length = ReadBlobMSBShort ( image ) ; for ( i = 0 ; i <= ( ssize_t ) length ; i ++ ) ( void ) ReadBlobMSBLong ( image ) ; width = ( size_t ) ( frame . bottom - frame . top ) ; height = ( size_t ) ( frame . right - frame . left ) ; if ( pixmap . bits_per_pixel <= 8 ) length &= 0x7fff ; if ( pixmap . bits_per_pixel == 16 ) width <<= 1 ; if ( length == 0 ) length = width ; if ( length < 8 ) { for ( i = 0 ; i < ( ssize_t ) ( length * height ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } else for ( i = 0 ; i < ( ssize_t ) height ; i ++ ) { if ( EOFBlob ( image ) != MagickFalse ) break ; if ( length > 200 ) { for ( j = 0 ; j < ( ssize_t ) ReadBlobMSBShort ( image ) ; j ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } else for ( j = 0 ; j < ( ssize_t ) ReadBlobByte ( image ) ; j ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } break ; } case 0x1b : { image -> background_color . red = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; image -> background_color . green = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; image -> background_color . blue = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; break ; } case 0x70 : case 0x71 : case 0x72 : case 0x73 : case 0x74 : case 0x75 : case 0x76 : case 0x77 : { length = ReadBlobMSBShort ( image ) ; for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } case 0x90 : case 0x91 : case 0x98 : case 0x99 : case 0x9a : case 0x9b : { PICTRectangle source , destination ; register unsigned char * p ; size_t j ; ssize_t bytes_per_line ; unsigned char * pixels ; bytes_per_line = 0 ; if ( ( code != 0x9a ) && ( code != 0x9b ) ) bytes_per_line = ( ssize_t ) ReadBlobMSBShort ( image ) ; else { ( void ) ReadBlobMSBShort ( image ) ; ( void ) ReadBlobMSBShort ( image ) ; ( void ) ReadBlobMSBShort ( image ) ; } if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; tile_image = CloneImage ( image , ( size_t ) ( frame . right - frame . left ) , ( size_t ) ( frame . bottom - frame . top ) , MagickTrue , exception ) ; if ( tile_image == ( Image * ) NULL ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( code == 0x9a ) || ( code == 0x9b ) || ( ( bytes_per_line & 0x8000 ) != 0 ) ) { if ( ReadPixmap ( image , & pixmap ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; tile_image -> depth = ( size_t ) pixmap . component_size ; tile_image -> alpha_trait = pixmap . component_count == 4 ? BlendPixelTrait : UndefinedPixelTrait ; tile_image -> resolution . x = ( double ) pixmap . horizontal_resolution ; tile_image -> resolution . y = ( double ) pixmap . vertical_resolution ; tile_image -> units = PixelsPerInchResolution ; if ( tile_image -> alpha_trait != UndefinedPixelTrait ) ( void ) SetImageAlpha ( tile_image , OpaqueAlpha , exception ) ; } if ( ( code != 0x9a ) && ( code != 0x9b ) ) { tile_image -> colors = 2 ; if ( ( bytes_per_line & 0x8000 ) != 0 ) { ( void ) ReadBlobMSBLong ( image ) ; flags = ( ssize_t ) ReadBlobMSBShort ( image ) ; tile_image -> colors = 1UL * ReadBlobMSBShort ( image ) + 1 ; } status = AcquireImageColormap ( tile_image , tile_image -> colors , exception ) ; if ( status == MagickFalse ) ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bytes_per_line & 0x8000 ) != 0 ) { for ( i = 0 ; i < ( ssize_t ) tile_image -> colors ; i ++ ) { j = ReadBlobMSBShort ( image ) % tile_image -> colors ; if ( ( flags & 0x8000 ) != 0 ) j = ( size_t ) i ; tile_image -> colormap [ j ] . red = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; tile_image -> colormap [ j ] . green = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; tile_image -> colormap [ j ] . blue = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; } } else { for ( i = 0 ; i < ( ssize_t ) tile_image -> colors ; i ++ ) { tile_image -> colormap [ i ] . red = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . red ) ; tile_image -> colormap [ i ] . green = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . green ) ; tile_image -> colormap [ i ] . blue = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . blue ) ; } } } if ( EOFBlob ( image ) != MagickFalse ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ReadRectangle ( image , & source ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ReadRectangle ( image , & destination ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; ( void ) ReadBlobMSBShort ( image ) ; if ( ( code == 0x91 ) || ( code == 0x99 ) || ( code == 0x9b ) ) { length = ReadBlobMSBShort ( image ) ; for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } if ( ( code != 0x9a ) && ( code != 0x9b ) && ( bytes_per_line & 0x8000 ) == 0 ) pixels = DecodeImage ( image , tile_image , ( size_t ) bytes_per_line , 1 , & extent ) ; else pixels = DecodeImage ( image , tile_image , ( size_t ) bytes_per_line , ( unsigned int ) pixmap . bits_per_pixel , & extent ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowPICTException ( CorruptImageError , \"UnableToUncompressImage\" ) ; p = pixels ; for ( y = 0 ; y < ( ssize_t ) tile_image -> rows ; y ++ ) { if ( p > ( pixels + extent + image -> columns ) ) { pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; } q = QueueAuthenticPixels ( tile_image , 0 , y , tile_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) tile_image -> columns ; x ++ ) { if ( tile_image -> storage_class == PseudoClass ) { index = ( Quantum ) ConstrainColormapIndex ( tile_image , ( ssize_t ) * p , exception ) ; SetPixelIndex ( tile_image , index , q ) ; SetPixelRed ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . red , q ) ; SetPixelGreen ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . green , q ) ; SetPixelBlue ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . blue , q ) ; } else { if ( pixmap . bits_per_pixel == 16 ) { i = ( ssize_t ) ( * p ++ ) ; j = ( size_t ) ( * p ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( i & 0x7c ) << 1 ) ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( ( i & 0x03 ) << 6 ) | ( ( j & 0xe0 ) >> 2 ) ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( j & 0x1f ) << 3 ) ) , q ) ; } else if ( tile_image -> alpha_trait == UndefinedPixelTrait ) { if ( p > ( pixels + extent + 2 * image -> columns ) ) ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( * ( p + tile_image -> columns ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( * ( p + 2 * tile_image -> columns ) ) , q ) ; } else { if ( p > ( pixels + extent + 3 * image -> columns ) ) ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; SetPixelAlpha ( tile_image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( * ( p + tile_image -> columns ) ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( * ( p + 2 * tile_image -> columns ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( * ( p + 3 * tile_image -> columns ) ) , q ) ; } } p ++ ; q += GetPixelChannels ( tile_image ) ; } if ( SyncAuthenticPixels ( tile_image , exception ) == MagickFalse ) break ; if ( ( tile_image -> storage_class == DirectClass ) && ( pixmap . bits_per_pixel != 16 ) ) { p += ( pixmap . component_count - 1 ) * tile_image -> columns ; if ( p < pixels ) break ; } status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , tile_image -> rows ) ; if ( status == MagickFalse ) break ; } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( ( jpeg == MagickFalse ) && ( EOFBlob ( image ) == MagickFalse ) ) if ( ( code == 0x9a ) || ( code == 0x9b ) || ( ( bytes_per_line & 0x8000 ) != 0 ) ) ( void ) CompositeImage ( image , tile_image , CopyCompositeOp , MagickTrue , ( ssize_t ) destination . left , ( ssize_t ) destination . top , exception ) ; tile_image = DestroyImage ( tile_image ) ; break ; } case 0xa1 : { unsigned char * info ; size_t type ; type = ReadBlobMSBShort ( image ) ; length = ReadBlobMSBShort ( image ) ; if ( length == 0 ) break ; ( void ) ReadBlobMSBLong ( image ) ; length -= MagickMin ( length , 4 ) ; if ( length == 0 ) break ; info = ( unsigned char * ) AcquireQuantumMemory ( length , sizeof ( * info ) ) ; if ( info == ( unsigned char * ) NULL ) break ; count = ReadBlob ( image , length , info ) ; if ( count != ( ssize_t ) length ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"UnableToReadImageData\" ) ; } switch ( type ) { case 0xe0 : { profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; SetStringInfoDatum ( profile , info ) ; status = SetImageProfile ( image , \"icc\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; if ( status == MagickFalse ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case 0x1f2 : { profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; SetStringInfoDatum ( profile , info ) ; status = SetImageProfile ( image , \"iptc\" , profile , exception ) ; if ( status == MagickFalse ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } profile = DestroyStringInfo ( profile ) ; break ; } default : break ; } info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; break ; } default : { if ( codes [ code ] . length == - 1 ) ( void ) ReadBlobMSBShort ( image ) ; else for ( i = 0 ; i < ( ssize_t ) codes [ code ] . length ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } } } if ( code == 0xc00 ) { for ( i = 0 ; i < 24 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } if ( ( ( code >= 0xb0 ) && ( code <= 0xcf ) ) || ( ( code >= 0x8000 ) && ( code <= 0x80ff ) ) ) continue ; if ( code == 0x8200 ) { char filename [ MaxTextExtent ] ; FILE * file ; int unique_file ; jpeg = MagickTrue ; read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; ( void ) FormatLocaleString ( read_info -> filename , MaxTextExtent , \"jpeg:%s\" , filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( ( unique_file == - 1 ) || ( file == ( FILE * ) NULL ) ) { ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; ( void ) CopyMagickString ( image -> filename , read_info -> filename , MagickPathExtent ) ; ThrowPICTException ( FileOpenError , \"UnableToCreateTemporaryFile\" ) ; } length = ReadBlobMSBLong ( image ) ; if ( length > 154 ) { for ( i = 0 ; i < 6 ; i ++ ) ( void ) ReadBlobMSBLong ( image ) ; if ( ReadRectangle ( image , & frame ) == MagickFalse ) { ( void ) fclose ( file ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; } for ( i = 0 ; i < 122 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; for ( i = 0 ; i < ( ssize_t ) ( length - 154 ) ; i ++ ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; <S2SV_StartBug> ( void ) fputc ( c , file ) ; <S2SV_EndBug> } } ( void ) fclose ( file ) ; ( void ) close ( unique_file ) ; tile_image = ReadImage ( read_info , exception ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( tile_image == ( Image * ) NULL ) continue ; ( void ) FormatLocaleString ( geometry , MagickPathExtent , \"%.20gx%.20g\" , ( double ) MagickMax ( image -> columns , tile_image -> columns ) , ( double ) MagickMax ( image -> rows , tile_image -> rows ) ) ; ( void ) SetImageExtent ( image , MagickMax ( image -> columns , tile_image -> columns ) , MagickMax ( image -> rows , tile_image -> rows ) , exception ) ; ( void ) TransformImageColorspace ( image , tile_image -> colorspace , exception ) ; ( void ) CompositeImage ( image , tile_image , CopyCompositeOp , MagickTrue , ( ssize_t ) frame . left , ( ssize_t ) frame . right , exception ) ; image -> compression = tile_image -> compression ; tile_image = DestroyImage ( tile_image ) ; continue ; } if ( ( code == 0xff ) || ( code == 0xffff ) ) break ; if ( ( ( code >= 0xd0 ) && ( code <= 0xfe ) ) || ( ( code >= 0x8100 ) && ( code <= 0xffff ) ) ) { length = ReadBlobMSBShort ( image ) ; for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } if ( ( code >= 0x100 ) && ( code <= 0x7fff ) ) { length = ( size_t ) ( ( code >> 7 ) & 0xff ) ; for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , message ) \\\\\\n{ <S2SV_ModEnd> if ( tile_image <S2SV_ModStart> ) ) ; \\\\\\n} <S2SV_ModEnd> char geometry [ <S2SV_ModStart> ) break ; if ( <S2SV_ModEnd> fputc ( c <S2SV_ModStart> , file ) != c ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8633\n\n```\nCWE-119 static void fwnet_receive_broadcast ( struct fw_iso_context * context , u32 cycle , size_t header_length , void * header , void * data ) { struct fwnet_device * dev ; struct fw_iso_packet packet ; __be16 * hdr_ptr ; __be32 * buf_ptr ; int retval ; u32 length ; <S2SV_StartBug> u16 source_node_id ; <S2SV_EndBug> u32 specifier_id ; u32 ver ; unsigned long offset ; unsigned long flags ; dev = data ; hdr_ptr = header ; length = be16_to_cpup ( hdr_ptr ) ; spin_lock_irqsave ( & dev -> lock , flags ) ; offset = dev -> rcv_buffer_size * dev -> broadcast_rcv_next_ptr ; buf_ptr = dev -> broadcast_rcv_buffer_ptrs [ dev -> broadcast_rcv_next_ptr ++ ] ; if ( dev -> broadcast_rcv_next_ptr == dev -> num_broadcast_rcv_ptrs ) dev -> broadcast_rcv_next_ptr = 0 ; spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_StartBug> specifier_id = ( be32_to_cpu ( buf_ptr [ 0 ] ) & 0xffff ) << 8 <S2SV_EndBug> | ( be32_to_cpu ( buf_ptr [ 1 ] ) & 0xff000000 ) >> 24 ; ver = be32_to_cpu ( buf_ptr [ 1 ] ) & 0xffffff ; source_node_id = be32_to_cpu ( buf_ptr [ 0 ] ) >> 16 ; if ( specifier_id == IANA_SPECIFIER_ID && <S2SV_StartBug> ( ver == RFC2734_SW_VERSION <S2SV_EndBug> # if IS_ENABLED ( CONFIG_IPV6 ) <S2SV_StartBug> || ver == RFC3146_SW_VERSION <S2SV_EndBug> # endif <S2SV_StartBug> ) ) { <S2SV_EndBug> buf_ptr += 2 ; length -= IEEE1394_GASP_HDR_SIZE ; fwnet_incoming_packet ( dev , buf_ptr , length , source_node_id , context -> card -> generation , true ) ; <S2SV_StartBug> } <S2SV_EndBug> packet . payload_length = dev -> rcv_buffer_size ; packet . interrupt = 1 ; packet . skip = 0 ; packet . tag = 3 ; packet . sy = 0 ; packet . header_length = IEEE1394_GASP_HDR_SIZE ; spin_lock_irqsave ( & dev -> lock , flags ) ; retval = fw_iso_context_queue ( dev -> broadcast_rcv_context , & packet , & dev -> broadcast_rcv_buffer , offset ) ; spin_unlock_irqrestore ( & dev -> lock , flags ) ; if ( retval >= 0 ) fw_iso_context_queue_flush ( dev -> broadcast_rcv_context ) ; else dev_err ( & dev -> netdev -> dev , \"requeue<S2SV_blank>failed\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u32 length ; <S2SV_ModEnd> unsigned long offset <S2SV_ModStart> flags ) ; if ( length > IEEE1394_GASP_HDR_SIZE && gasp_specifier_id ( buf_ptr ) <S2SV_ModEnd> == IANA_SPECIFIER_ID && <S2SV_ModStart> IANA_SPECIFIER_ID && ( gasp_version ( buf_ptr ) <S2SV_ModEnd> == RFC2734_SW_VERSION # <S2SV_ModStart> CONFIG_IPV6 ) || gasp_version ( buf_ptr ) <S2SV_ModEnd> == RFC3146_SW_VERSION # <S2SV_ModStart> endif ) ) fwnet_incoming_packet ( dev , buf_ptr + 2 , length - IEEE1394_GASP_HDR_SIZE , gasp_source_id ( buf_ptr ) <S2SV_ModEnd> , context -> <S2SV_ModStart> true ) ; <S2SV_ModEnd> packet . payload_length\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2695\n\n```\nCWE-763 static OM_uint32 acc_ctx_new ( OM_uint32 * minor_status , gss_buffer_t buf , gss_ctx_id_t * ctx , spnego_gss_cred_id_t spcred , gss_buffer_t * mechToken , gss_buffer_t * mechListMIC , OM_uint32 * negState , send_token_flag * return_token ) { OM_uint32 tmpmin , ret , req_flags ; gss_OID_set supported_mechSet , mechTypes ; gss_buffer_desc der_mechTypes ; gss_OID mech_wanted ; spnego_gss_ctx_id_t sc = NULL ; ret = GSS_S_DEFECTIVE_TOKEN ; der_mechTypes . length = 0 ; der_mechTypes . value = NULL ; * mechToken = * mechListMIC = GSS_C_NO_BUFFER ; supported_mechSet = mechTypes = GSS_C_NO_OID_SET ; * return_token = ERROR_TOKEN_SEND ; * negState = REJECT ; * minor_status = 0 ; ret = get_negTokenInit ( minor_status , buf , & der_mechTypes , & mechTypes , & req_flags , mechToken , mechListMIC ) ; if ( ret != GSS_S_COMPLETE ) { goto cleanup ; } ret = get_negotiable_mechs ( minor_status , spcred , GSS_C_ACCEPT , & supported_mechSet ) ; if ( ret != GSS_S_COMPLETE ) { * return_token = NO_TOKEN_SEND ; goto cleanup ; } mech_wanted = negotiate_mech ( supported_mechSet , mechTypes , negState ) ; if ( * negState == REJECT ) { ret = GSS_S_BAD_MECH ; goto cleanup ; } sc = ( spnego_gss_ctx_id_t ) * ctx ; if ( sc != NULL ) { gss_release_buffer ( & tmpmin , & sc -> DER_mechTypes ) ; assert ( mech_wanted != GSS_C_NO_OID ) ; } else <S2SV_StartBug> sc = create_spnego_ctx ( ) ; <S2SV_EndBug> if ( sc == NULL ) { ret = GSS_S_FAILURE ; * return_token = NO_TOKEN_SEND ; goto cleanup ; } sc -> mech_set = mechTypes ; mechTypes = GSS_C_NO_OID_SET ; sc -> internal_mech = mech_wanted ; sc -> DER_mechTypes = der_mechTypes ; der_mechTypes . length = 0 ; der_mechTypes . value = NULL ; if ( * negState == REQUEST_MIC ) sc -> mic_reqd = 1 ; * return_token = INIT_TOKEN_SEND ; sc -> firstpass = 1 ; * ctx = ( gss_ctx_id_t ) sc ; ret = GSS_S_COMPLETE ; cleanup : gss_release_oid_set ( & tmpmin , & mechTypes ) ; gss_release_oid_set ( & tmpmin , & supported_mechSet ) ; if ( der_mechTypes . length != 0 ) gss_release_buffer ( & tmpmin , & der_mechTypes ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = create_spnego_ctx ( 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3731\n\n```\nCWE-125 static int aes_gcm_ctrl ( EVP_CIPHER_CTX * c , int type , int arg , void * ptr ) { EVP_AES_GCM_CTX * gctx = EVP_C_DATA ( EVP_AES_GCM_CTX , c ) ; switch ( type ) { case EVP_CTRL_INIT : gctx -> key_set = 0 ; gctx -> iv_set = 0 ; gctx -> ivlen = EVP_CIPHER_CTX_iv_length ( c ) ; gctx -> iv = EVP_CIPHER_CTX_iv_noconst ( c ) ; gctx -> taglen = - 1 ; gctx -> iv_gen = 0 ; gctx -> tls_aad_len = - 1 ; return 1 ; case EVP_CTRL_AEAD_SET_IVLEN : if ( arg <= 0 ) return 0 ; if ( ( arg > EVP_MAX_IV_LENGTH ) && ( arg > gctx -> ivlen ) ) { if ( gctx -> iv != EVP_CIPHER_CTX_iv_noconst ( c ) ) OPENSSL_free ( gctx -> iv ) ; gctx -> iv = OPENSSL_malloc ( arg ) ; if ( gctx -> iv == NULL ) return 0 ; } gctx -> ivlen = arg ; return 1 ; case EVP_CTRL_AEAD_SET_TAG : if ( arg <= 0 || arg > 16 || EVP_CIPHER_CTX_encrypting ( c ) ) return 0 ; memcpy ( EVP_CIPHER_CTX_buf_noconst ( c ) , ptr , arg ) ; gctx -> taglen = arg ; return 1 ; case EVP_CTRL_AEAD_GET_TAG : if ( arg <= 0 || arg > 16 || ! EVP_CIPHER_CTX_encrypting ( c ) || gctx -> taglen < 0 ) return 0 ; memcpy ( ptr , EVP_CIPHER_CTX_buf_noconst ( c ) , arg ) ; return 1 ; case EVP_CTRL_GCM_SET_IV_FIXED : if ( arg == - 1 ) { memcpy ( gctx -> iv , ptr , gctx -> ivlen ) ; gctx -> iv_gen = 1 ; return 1 ; } if ( ( arg < 4 ) || ( gctx -> ivlen - arg ) < 8 ) return 0 ; if ( arg ) memcpy ( gctx -> iv , ptr , arg ) ; if ( EVP_CIPHER_CTX_encrypting ( c ) && RAND_bytes ( gctx -> iv + arg , gctx -> ivlen - arg ) <= 0 ) return 0 ; gctx -> iv_gen = 1 ; return 1 ; case EVP_CTRL_GCM_IV_GEN : if ( gctx -> iv_gen == 0 || gctx -> key_set == 0 ) return 0 ; CRYPTO_gcm128_setiv ( & gctx -> gcm , gctx -> iv , gctx -> ivlen ) ; if ( arg <= 0 || arg > gctx -> ivlen ) arg = gctx -> ivlen ; memcpy ( ptr , gctx -> iv + gctx -> ivlen - arg , arg ) ; ctr64_inc ( gctx -> iv + gctx -> ivlen - 8 ) ; gctx -> iv_set = 1 ; return 1 ; case EVP_CTRL_GCM_SET_IV_INV : if ( gctx -> iv_gen == 0 || gctx -> key_set == 0 || EVP_CIPHER_CTX_encrypting ( c ) ) return 0 ; memcpy ( gctx -> iv + gctx -> ivlen - arg , ptr , arg ) ; CRYPTO_gcm128_setiv ( & gctx -> gcm , gctx -> iv , gctx -> ivlen ) ; gctx -> iv_set = 1 ; return 1 ; case EVP_CTRL_AEAD_TLS1_AAD : if ( arg != EVP_AEAD_TLS1_AAD_LEN ) return 0 ; memcpy ( EVP_CIPHER_CTX_buf_noconst ( c ) , ptr , arg ) ; gctx -> tls_aad_len = arg ; { unsigned int len = EVP_CIPHER_CTX_buf_noconst ( c ) [ arg - 2 ] << 8 | EVP_CIPHER_CTX_buf_noconst ( c ) [ arg - 1 ] ; <S2SV_StartBug> len -= EVP_GCM_TLS_EXPLICIT_IV_LEN ; <S2SV_EndBug> <S2SV_StartBug> if ( ! EVP_CIPHER_CTX_encrypting ( c ) ) <S2SV_EndBug> <S2SV_StartBug> len -= EVP_GCM_TLS_TAG_LEN ; <S2SV_EndBug> EVP_CIPHER_CTX_buf_noconst ( c ) [ arg - 2 ] = len >> 8 ; EVP_CIPHER_CTX_buf_noconst ( c ) [ arg - 1 ] = len & 0xff ; } return EVP_GCM_TLS_TAG_LEN ; case EVP_CTRL_COPY : { EVP_CIPHER_CTX * out = ptr ; EVP_AES_GCM_CTX * gctx_out = EVP_C_DATA ( EVP_AES_GCM_CTX , out ) ; if ( gctx -> gcm . key ) { if ( gctx -> gcm . key != & gctx -> ks ) return 0 ; gctx_out -> gcm . key = & gctx_out -> ks ; } if ( gctx -> iv == EVP_CIPHER_CTX_iv_noconst ( c ) ) gctx_out -> iv = EVP_CIPHER_CTX_iv_noconst ( out ) ; else { gctx_out -> iv = OPENSSL_malloc ( gctx -> ivlen ) ; if ( gctx_out -> iv == NULL ) return 0 ; memcpy ( gctx_out -> iv , gctx -> iv , gctx -> ivlen ) ; } return 1 ; } default : return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ] ; if ( len < EVP_GCM_TLS_EXPLICIT_IV_LEN ) return 0 ; <S2SV_ModStart> c ) ) { if ( len < EVP_GCM_TLS_TAG_LEN ) return 0 ; <S2SV_ModStart> -= EVP_GCM_TLS_TAG_LEN ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16163\n\n```\nCWE-400 static int parse_exp ( Node * * np , PToken * tok , int term , UChar * * src , UChar * end , ScanEnv * env , int group_head ) { <S2SV_StartBug> int r , len , group = 0 ; <S2SV_EndBug> Node * qn ; <S2SV_StartBug> Node * * tp ; <S2SV_EndBug> * np = NULL ; if ( tok -> type == ( enum TokenSyms ) term ) <S2SV_StartBug> goto end_of_token ; <S2SV_EndBug> switch ( tok -> type ) { case TK_ALT : case TK_EOT : end_of_token : * np = node_new_empty ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; return tok -> type ; break ; case TK_SUBEXP_OPEN : r = parse_bag ( np , tok , TK_SUBEXP_CLOSE , src , end , env ) ; if ( r < 0 ) return r ; if ( r == 1 ) { if ( group_head == 0 ) group = 1 ; else { Node * target = * np ; * np = node_new_group ( target ) ; if ( IS_NULL ( * np ) ) { onig_node_free ( target ) ; return ONIGERR_MEMORY ; } group = 2 ; } } else if ( r == 2 ) { Node * target ; OnigOptionType prev = env -> options ; env -> options = BAG_ ( * np ) -> o . options ; r = fetch_token ( tok , src , end , env ) ; if ( r < 0 ) return r ; r = parse_subexp ( & target , tok , term , src , end , env , 0 ) ; env -> options = prev ; if ( r < 0 ) { onig_node_free ( target ) ; return r ; } NODE_BODY ( * np ) = target ; return tok -> type ; } break ; case TK_SUBEXP_CLOSE : if ( ! IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_ALLOW_UNMATCHED_CLOSE_SUBEXP ) ) return ONIGERR_UNMATCHED_CLOSE_PARENTHESIS ; if ( tok -> escaped ) goto tk_raw_byte ; else goto tk_byte ; break ; case TK_STRING : tk_byte : { * np = node_new_str ( tok -> backp , * src ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; while ( 1 ) { r = fetch_token ( tok , src , end , env ) ; if ( r < 0 ) return r ; if ( r != TK_STRING ) break ; r = onig_node_str_cat ( * np , tok -> backp , * src ) ; if ( r < 0 ) return r ; } string_end : tp = np ; goto repeat ; } break ; case TK_RAW_BYTE : tk_raw_byte : { * np = node_new_str_raw_char ( ( UChar ) tok -> u . c ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; len = 1 ; while ( 1 ) { if ( len >= ONIGENC_MBC_MINLEN ( env -> enc ) ) { if ( len == enclen ( env -> enc , STR_ ( * np ) -> s ) ) { r = fetch_token ( tok , src , end , env ) ; goto tk_raw_byte_end ; } } r = fetch_token ( tok , src , end , env ) ; if ( r < 0 ) return r ; if ( r != TK_RAW_BYTE ) return ONIGERR_TOO_SHORT_MULTI_BYTE_STRING ; r = node_str_cat_char ( * np , ( UChar ) tok -> u . c ) ; if ( r < 0 ) return r ; len ++ ; } tk_raw_byte_end : if ( ! ONIGENC_IS_VALID_MBC_STRING ( env -> enc , STR_ ( * np ) -> s , STR_ ( * np ) -> end ) ) return ONIGERR_INVALID_WIDE_CHAR_VALUE ; NODE_STRING_CLEAR_RAW ( * np ) ; goto string_end ; } break ; case TK_CODE_POINT : { UChar buf [ ONIGENC_CODE_TO_MBC_MAXLEN ] ; len = ONIGENC_CODE_TO_MBC ( env -> enc , tok -> u . code , buf ) ; if ( len < 0 ) return len ; # ifdef NUMBERED_CHAR_IS_NOT_CASE_AMBIG * np = node_new_str_raw ( buf , buf + len ) ; # else * np = node_new_str ( buf , buf + len ) ; # endif CHECK_NULL_RETURN_MEMERR ( * np ) ; } break ; case TK_QUOTE_OPEN : { OnigCodePoint end_op [ 2 ] ; UChar * qstart , * qend , * nextp ; end_op [ 0 ] = ( OnigCodePoint ) MC_ESC ( env -> syntax ) ; end_op [ 1 ] = ( OnigCodePoint ) 'E' ; qstart = * src ; qend = find_str_position ( end_op , 2 , qstart , end , & nextp , env -> enc ) ; if ( IS_NULL ( qend ) ) { nextp = qend = end ; } * np = node_new_str ( qstart , qend ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; * src = nextp ; } break ; case TK_CHAR_TYPE : { switch ( tok -> u . prop . ctype ) { case ONIGENC_CTYPE_WORD : * np = node_new_ctype ( tok -> u . prop . ctype , tok -> u . prop . not , env -> options ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; break ; case ONIGENC_CTYPE_SPACE : case ONIGENC_CTYPE_DIGIT : case ONIGENC_CTYPE_XDIGIT : { CClassNode * cc ; * np = node_new_cclass ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; cc = CCLASS_ ( * np ) ; add_ctype_to_cc ( cc , tok -> u . prop . ctype , 0 , env ) ; if ( tok -> u . prop . not != 0 ) NCCLASS_SET_NOT ( cc ) ; } break ; default : return ONIGERR_PARSER_BUG ; break ; } } break ; case TK_CHAR_PROPERTY : r = parse_char_property ( np , tok , src , end , env ) ; if ( r != 0 ) return r ; break ; case TK_CC_OPEN : { CClassNode * cc ; r = parse_char_class ( np , tok , src , end , env ) ; if ( r != 0 ) return r ; cc = CCLASS_ ( * np ) ; if ( IS_IGNORECASE ( env -> options ) ) { IApplyCaseFoldArg iarg ; iarg . env = env ; iarg . cc = cc ; iarg . alt_root = NULL_NODE ; iarg . ptail = & ( iarg . alt_root ) ; r = ONIGENC_APPLY_ALL_CASE_FOLD ( env -> enc , env -> case_fold_flag , i_apply_case_fold , & iarg ) ; if ( r != 0 ) { onig_node_free ( iarg . alt_root ) ; return r ; } if ( IS_NOT_NULL ( iarg . alt_root ) ) { Node * work = onig_node_new_alt ( * np , iarg . alt_root ) ; if ( IS_NULL ( work ) ) { onig_node_free ( iarg . alt_root ) ; return ONIGERR_MEMORY ; } * np = work ; } } } break ; case TK_ANYCHAR : * np = node_new_anychar ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; break ; case TK_ANYCHAR_ANYTIME : * np = node_new_anychar ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; qn = node_new_quantifier ( 0 , INFINITE_REPEAT , 0 ) ; CHECK_NULL_RETURN_MEMERR ( qn ) ; NODE_BODY ( qn ) = * np ; * np = qn ; break ; case TK_BACKREF : len = tok -> u . backref . num ; * np = node_new_backref ( len , ( len > 1 ? tok -> u . backref . refs : & ( tok -> u . backref . ref1 ) ) , tok -> u . backref . by_name , # ifdef USE_BACKREF_WITH_LEVEL tok -> u . backref . exist_level , tok -> u . backref . level , # endif env ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; break ; # ifdef USE_CALL case TK_CALL : { int gnum = tok -> u . call . gnum ; * np = node_new_call ( tok -> u . call . name , tok -> u . call . name_end , gnum , tok -> u . call . by_number ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; env -> num_call ++ ; if ( tok -> u . call . by_number != 0 && gnum == 0 ) { env -> has_call_zero = 1 ; } } break ; # endif case TK_ANCHOR : { int ascii_mode = IS_WORD_ASCII ( env -> options ) && IS_WORD_ANCHOR_TYPE ( tok -> u . anchor ) ? 1 : 0 ; * np = onig_node_new_anchor ( tok -> u . anchor , ascii_mode ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; } break ; case TK_REPEAT : case TK_INTERVAL : if ( IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_CONTEXT_INDEP_REPEAT_OPS ) ) { if ( IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_CONTEXT_INVALID_REPEAT_OPS ) ) return ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED ; else { * np = node_new_empty ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; } } else { goto tk_byte ; } break ; case TK_KEEP : r = node_new_keep ( np , env ) ; if ( r < 0 ) return r ; break ; case TK_GENERAL_NEWLINE : r = node_new_general_newline ( np , env ) ; if ( r < 0 ) return r ; break ; case TK_NO_NEWLINE : r = node_new_no_newline ( np , env ) ; if ( r < 0 ) return r ; break ; case TK_TRUE_ANYCHAR : r = node_new_true_anychar ( np , env ) ; if ( r < 0 ) return r ; break ; case TK_TEXT_SEGMENT : r = make_text_segment ( np , env ) ; if ( r < 0 ) return r ; break ; default : return ONIGERR_PARSER_BUG ; break ; } { tp = np ; re_entry : r = fetch_token ( tok , src , end , env ) ; if ( r < 0 ) return r ; repeat : if ( r == TK_REPEAT || r == TK_INTERVAL ) { Node * target ; if ( is_invalid_quantifier_target ( * tp ) ) return ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID ; <S2SV_StartBug> qn = node_new_quantifier ( tok -> u . repeat . lower , tok -> u . repeat . upper , <S2SV_EndBug> r == TK_INTERVAL ) ; CHECK_NULL_RETURN_MEMERR ( qn ) ; QUANT_ ( qn ) -> greedy = tok -> u . repeat . greedy ; if ( group == 2 ) { target = node_drop_group ( * tp ) ; * tp = NULL_NODE ; } else { target = * tp ; } r = set_quantifier ( qn , target , group , env ) ; if ( r < 0 ) { onig_node_free ( qn ) ; return r ; } if ( tok -> u . repeat . possessive != 0 ) { Node * en ; en = node_new_bag ( BAG_STOP_BACKTRACK ) ; if ( IS_NULL ( en ) ) { onig_node_free ( qn ) ; return ONIGERR_MEMORY ; } NODE_BODY ( en ) = qn ; qn = en ; } if ( r == 0 ) { * tp = qn ; } else if ( r == 1 ) { onig_node_free ( qn ) ; * tp = target ; } else if ( r == 2 ) { Node * tmp ; * tp = node_new_list ( * tp , NULL ) ; if ( IS_NULL ( * tp ) ) { onig_node_free ( qn ) ; return ONIGERR_MEMORY ; } tmp = NODE_CDR ( * tp ) = node_new_list ( qn , NULL ) ; if ( IS_NULL ( tmp ) ) { onig_node_free ( qn ) ; return ONIGERR_MEMORY ; } tp = & ( NODE_CAR ( tmp ) ) ; } group = 0 ; goto re_entry ; } } return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len , group <S2SV_ModEnd> ; Node * <S2SV_ModStart> * * tp ; unsigned int parse_depth ; group = 0 <S2SV_ModStart> ) goto end_of_token ; parse_depth = env -> parse_depth <S2SV_ModStart> return ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID ; parse_depth ++ ; if ( parse_depth > ParseDepthLimit ) return ONIGERR_PARSE_DEPTH_LIMIT_OVER ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12135\n\n```\nCWE-190 static int bson_validate_string ( bson * b , const unsigned char * string , <S2SV_StartBug> const int length , const char check_utf8 , const char check_dot , <S2SV_EndBug> const char check_dollar ) { <S2SV_StartBug> int position = 0 ; <S2SV_EndBug> int sequence_length = 1 ; if ( check_dollar && string [ 0 ] == '$' ) { if ( ! bson_string_is_db_ref ( string , length ) ) b -> err |= BSON_FIELD_INIT_DOLLAR ; } while ( position < length ) { if ( check_dot && * ( string + position ) == '.' ) { b -> err |= BSON_FIELD_HAS_DOT ; } if ( check_utf8 ) { sequence_length = trailingBytesForUTF8 [ * ( string + position ) ] + 1 ; if ( ( position + sequence_length ) > length ) { b -> err |= BSON_NOT_UTF8 ; return BSON_ERROR ; } if ( ! isLegalUTF8 ( string + position , sequence_length ) ) { b -> err |= BSON_NOT_UTF8 ; return BSON_ERROR ; } } position += sequence_length ; } return BSON_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> string , const size_t <S2SV_ModEnd> length , const <S2SV_ModStart> check_dollar ) { size_t <S2SV_ModEnd> position = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_keyword ( void * _o ) { keyword_ty o = ( keyword_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } result = PyType_GenericNew ( keyword_type , NULL , NULL ) ; if ( ! result ) return NULL ; value = ast2obj_identifier ( o -> arg ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_arg , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } result\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9907\n\n```\nCWE-20 static MagickBooleanType ReadDXT3 ( Image * image , DDSInfo * dds_info , ExceptionInfo * exception ) { DDSColors colors ; ssize_t j , y ; PixelPacket * q ; register ssize_t i , x ; unsigned char alpha ; size_t a0 , a1 , bits , code ; unsigned short c0 , c1 ; for ( y = 0 ; y < ( ssize_t ) dds_info -> height ; y += 4 ) { for ( x = 0 ; x < ( ssize_t ) dds_info -> width ; x += 4 ) { <S2SV_StartBug> q = QueueAuthenticPixels ( image , x , y , Min ( 4 , dds_info -> width - x ) , <S2SV_EndBug> <S2SV_StartBug> Min ( 4 , dds_info -> height - y ) , exception ) ; <S2SV_EndBug> if ( q == ( PixelPacket * ) NULL ) return MagickFalse ; a0 = ReadBlobLSBLong ( image ) ; a1 = ReadBlobLSBLong ( image ) ; c0 = ReadBlobLSBShort ( image ) ; c1 = ReadBlobLSBShort ( image ) ; bits = ReadBlobLSBLong ( image ) ; CalculateColors ( c0 , c1 , & colors , MagickTrue ) ; for ( j = 0 ; j < 4 ; j ++ ) { for ( i = 0 ; i < 4 ; i ++ ) { if ( ( x + i ) < ( ssize_t ) dds_info -> width && ( y + j ) < ( ssize_t ) dds_info -> height ) { code = ( bits >> ( ( 4 * j + i ) * 2 ) ) & 0x3 ; SetPixelRed ( q , ScaleCharToQuantum ( colors . r [ code ] ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( colors . g [ code ] ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( colors . b [ code ] ) ) ; if ( j < 2 ) alpha = 17U * ( unsigned char ) ( ( a0 >> ( 4 * ( 4 * j + i ) ) ) & 0xf ) ; else alpha = 17U * ( unsigned char ) ( ( a1 >> ( 4 * ( 4 * ( j - 2 ) + i ) ) ) & 0xf ) ; SetPixelAlpha ( q , ScaleCharToQuantum ( ( unsigned char ) alpha ) ) ; q ++ ; } } } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) return MagickFalse ; } } <S2SV_StartBug> SkipDXTMipmaps ( image , dds_info , 16 ) ; <S2SV_EndBug> return MagickTrue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , y , MagickMin <S2SV_ModEnd> ( 4 , <S2SV_ModStart> x ) , MagickMin <S2SV_ModEnd> ( 4 , <S2SV_ModStart> ; } } return ( <S2SV_ModStart> dds_info , 16 , exception ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-24342\n\n```\nCWE-119 void luaD_callnoyield ( lua_State * L , StkId func , int nResults ) { incXCcalls ( L ) ; <S2SV_StartBug> if ( getCcalls ( L ) <= CSTACKERR ) <S2SV_EndBug> <S2SV_StartBug> luaE_freeCI ( L ) ; <S2SV_EndBug> luaD_call ( L , func , nResults ) ; decXCcalls ( L ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <= CSTACKERR ) { luaE_exitCcall <S2SV_ModEnd> ( L ) <S2SV_ModStart> L ) ; luaE_enterCcall ( L ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 void sas_unregister_dev ( struct asd_sas_port * port , struct domain_device * dev ) { if ( ! test_bit ( SAS_DEV_DESTROY , & dev -> state ) && ! list_empty ( & dev -> disco_list_node ) ) { list_del_init ( & dev -> disco_list_node ) ; sas_rphy_free ( dev -> rphy ) ; sas_unregister_common_dev ( port , dev ) ; return ; } if ( ! test_and_set_bit ( SAS_DEV_DESTROY , & dev -> state ) ) { sas_rphy_unlink ( dev -> rphy ) ; list_move_tail ( & dev -> disco_list_node , & port -> destroy_list ) ; <S2SV_StartBug> sas_discover_event ( dev -> port , DISCE_DESTRUCT ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> destroy_list ) ; <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_set_activemap ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { vpx_active_map_t * data = va_arg ( args , vpx_active_map_t * ) ; if ( data ) { vpx_active_map_t * map = ( vpx_active_map_t * ) data ; if ( ! vp8_set_active_map ( ctx -> cpi , map -> active_map , map -> rows , map -> cols ) ) return VPX_CODEC_OK ; else return VPX_CODEC_INVALID_PARAM ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14954\n\n```\nCWE-74 int imap_open_connection ( struct ImapAccountData * adata ) { if ( mutt_socket_open ( adata -> conn ) < 0 ) return - 1 ; adata -> state = IMAP_CONNECTED ; if ( imap_cmd_step ( adata ) != IMAP_RES_OK ) { imap_close_connection ( adata ) ; return - 1 ; } if ( mutt_str_startswith ( adata -> buf , \"*<S2SV_blank>OK\" , CASE_IGNORE ) ) { if ( ! mutt_str_startswith ( adata -> buf , \"*<S2SV_blank>OK<S2SV_blank>[CAPABILITY\" , CASE_IGNORE ) && check_capabilities ( adata ) ) { goto bail ; } # ifdef USE_SSL if ( ! adata -> conn -> ssf && ( C_SslForceTls || ( adata -> capabilities & IMAP_CAP_STARTTLS ) ) ) { enum QuadOption ans ; if ( C_SslForceTls ) ans = MUTT_YES ; else if ( ( ans = query_quadoption ( C_SslStarttls , _ ( \"Secure<S2SV_blank>connection<S2SV_blank>with<S2SV_blank>TLS?\" ) ) ) == MUTT_ABORT ) { goto err_close_conn ; } if ( ans == MUTT_YES ) { <S2SV_StartBug> enum ImapExecResult rc = imap_exec ( adata , \"STARTTLS\" , IMAP_CMD_NO_FLAGS ) ; <S2SV_EndBug> if ( rc == IMAP_EXEC_FATAL ) goto bail ; if ( rc != IMAP_EXEC_ERROR ) { if ( mutt_ssl_starttls ( adata -> conn ) ) { mutt_error ( _ ( \"Could<S2SV_blank>not<S2SV_blank>negotiate<S2SV_blank>TLS<S2SV_blank>connection\" ) ) ; goto err_close_conn ; } else { if ( imap_exec ( adata , \"CAPABILITY\" , IMAP_CMD_NO_FLAGS ) ) goto bail ; } } } } if ( C_SslForceTls && ! adata -> conn -> ssf ) { mutt_error ( _ ( \"Encrypted<S2SV_blank>connection<S2SV_blank>unavailable\" ) ) ; goto err_close_conn ; } # endif } else if ( mutt_str_startswith ( adata -> buf , \"*<S2SV_blank>PREAUTH\" , CASE_IGNORE ) ) { # ifdef USE_SSL if ( adata -> conn -> ssf == 0 ) { bool proceed = true ; if ( C_SslForceTls ) { proceed = false ; } else if ( C_SslStarttls != MUTT_NO ) { proceed = mutt_yesorno ( _ ( \"Abort<S2SV_blank>unencrypted<S2SV_blank>PREAUTH<S2SV_blank>connection?\" ) , C_SslStarttls ) != MUTT_NO ; } if ( ! proceed ) { mutt_error ( _ ( \"Encrypted<S2SV_blank>connection<S2SV_blank>unavailable\" ) ) ; goto err_close_conn ; } } # endif adata -> state = IMAP_AUTHENTICATED ; if ( check_capabilities ( adata ) != 0 ) goto bail ; FREE ( & adata -> capstr ) ; } else { imap_error ( \"imap_open_connection()\" , adata -> buf ) ; goto bail ; } return 0 ; # ifdef USE_SSL err_close_conn : imap_close_connection ( adata ) ; # endif bail : FREE ( & adata -> capstr ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , \"STARTTLS\" , IMAP_CMD_SINGLE ) ; mutt_socket_empty ( adata -> conn <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 void open_log_file ( const char * name , const char * prog , const char * namespace , const char * instance ) { char * file_name ; if ( log_file ) { fclose ( log_file ) ; log_file = NULL ; } if ( ! name ) return ; file_name = make_file_name ( name , prog , namespace , instance ) ; <S2SV_StartBug> log_file = fopen ( file_name , \"a\" ) ; <S2SV_EndBug> if ( log_file ) { int n = fileno ( log_file ) ; fcntl ( n , F_SETFD , FD_CLOEXEC | fcntl ( n , F_GETFD ) ) ; fcntl ( n , F_SETFL , O_NONBLOCK | fcntl ( n , F_GETFL ) ) ; } FREE ( file_name ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; log_file = fopen_safe <S2SV_ModEnd> ( file_name ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13013\n\n```\nCWE-125 static void atmarp_print ( netdissect_options * ndo , const u_char * bp , u_int length , u_int caplen ) { const struct atmarp_pkthdr * ap ; u_short pro , hrd , op ; ap = ( const struct atmarp_pkthdr * ) bp ; ND_TCHECK ( * ap ) ; hrd = ATMHRD ( ap ) ; pro = ATMPRO ( ap ) ; op = ATMOP ( ap ) ; if ( ! ND_TTEST2 ( * aar_tpa ( ap ) , ATMTPROTO_LEN ( ap ) ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) ap , length ) ; return ; } if ( ! ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"ARP,<S2SV_blank>\" ) ) ; } if ( ( pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL ) || ATMSPROTO_LEN ( ap ) != 4 || ATMTPROTO_LEN ( ap ) != 4 || ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"%s,<S2SV_blank>%s<S2SV_blank>(len<S2SV_blank>%u/%u)\" , tok2str ( arphrd_values , \"Unknown<S2SV_blank>Hardware<S2SV_blank>(%u)\" , hrd ) , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , pro ) , ATMSPROTO_LEN ( ap ) , ATMTPROTO_LEN ( ap ) ) ) ; if ( ! ndo -> ndo_vflag ) { goto out ; } } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>\" , ndo -> ndo_vflag ? \",<S2SV_blank>\" : \"\" , tok2str ( arpop_values , \"Unknown<S2SV_blank>(%u)\" , op ) ) ) ; switch ( op ) { case ARPOP_REQUEST : <S2SV_StartBug> ND_PRINT ( ( ndo , \"who-has<S2SV_blank>%s\" , ipaddr_string ( ndo , ATMTPA ( ap ) ) ) ) ; <S2SV_EndBug> if ( ATMTHRD_LEN ( ap ) != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(\" ) ) ; atmarp_addr_print ( ndo , ATMTHA ( ap ) , ATMTHRD_LEN ( ap ) , ATMTSA ( ap ) , ATMTSLN ( ap ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"tell<S2SV_blank>%s\" , ipaddr_string ( ndo , ATMSPA ( ap ) ) ) ) ; <S2SV_EndBug> break ; case ARPOP_REPLY : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>is-at<S2SV_blank>\" , ipaddr_string ( ndo , ATMSPA ( ap ) ) ) ) ; <S2SV_EndBug> atmarp_addr_print ( ndo , ATMSHA ( ap ) , ATMSHRD_LEN ( ap ) , ATMSSA ( ap ) , ATMSSLN ( ap ) ) ; break ; case ARPOP_INVREQUEST : ND_PRINT ( ( ndo , \"who-is<S2SV_blank>\" ) ) ; atmarp_addr_print ( ndo , ATMTHA ( ap ) , ATMTHRD_LEN ( ap ) , ATMTSA ( ap ) , ATMTSLN ( ap ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>tell<S2SV_blank>\" ) ) ; atmarp_addr_print ( ndo , ATMSHA ( ap ) , ATMSHRD_LEN ( ap ) , ATMSSA ( ap ) , ATMSSLN ( ap ) ) ; break ; case ARPOP_INVREPLY : atmarp_addr_print ( ndo , ATMSHA ( ap ) , ATMSHRD_LEN ( ap ) , ATMSSA ( ap ) , ATMSSLN ( ap ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"at<S2SV_blank>%s\" , ipaddr_string ( ndo , ATMSPA ( ap ) ) ) ) ; <S2SV_EndBug> break ; case ARPOP_NAK : <S2SV_StartBug> ND_PRINT ( ( ndo , \"for<S2SV_blank>%s\" , ipaddr_string ( ndo , ATMSPA ( ap ) ) ) ) ; <S2SV_EndBug> break ; default : ND_DEFAULTPRINT ( ( const u_char * ) ap , caplen ) ; return ; } out : ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"who-has<S2SV_blank>\" ) ) ; atmarp_tpaddr_print ( ndo , ap , pro <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( ndo , \"<S2SV_blank>tell<S2SV_blank>\" ) ) ; atmarp_spaddr_print ( ndo , ap , pro <S2SV_ModEnd> ) ; break <S2SV_ModStart> case ARPOP_REPLY : atmarp_spaddr_print ( ndo , ap , pro ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>is-at<S2SV_blank>\" <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( ndo , \"at<S2SV_blank>\" ) ) ; atmarp_spaddr_print ( ndo , ap , pro <S2SV_ModEnd> ) ; break <S2SV_ModStart> ( ndo , \"for<S2SV_blank>\" ) ) ; atmarp_spaddr_print ( ndo , ap , pro <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8689\n\n```\nCWE-125 static int read_Header ( struct archive_read * a , struct _7z_header_info * h , int check_header_id ) { struct _7zip * zip = ( struct _7zip * ) a -> format -> data ; const unsigned char * p ; struct _7z_folder * folders ; struct _7z_stream_info * si = & ( zip -> si ) ; struct _7zip_entry * entries ; uint32_t folderIndex , indexInFolder ; unsigned i ; int eindex , empty_streams , sindex ; if ( check_header_id ) { if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; if ( * p != kHeader ) return ( - 1 ) ; } if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; if ( * p == kArchiveProperties ) { for ( ; ; ) { uint64_t size ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; if ( * p == 0 ) break ; if ( parse_7zip_uint64 ( a , & size ) < 0 ) return ( - 1 ) ; } if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; } if ( * p == kMainStreamsInfo ) { if ( read_StreamsInfo ( a , & ( zip -> si ) ) < 0 ) return ( - 1 ) ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; } if ( * p == kEnd ) return ( 0 ) ; if ( * p != kFilesInfo ) return ( - 1 ) ; if ( parse_7zip_uint64 ( a , & ( zip -> numFiles ) ) < 0 ) return ( - 1 ) ; if ( UMAX_ENTRY < zip -> numFiles ) return ( - 1 ) ; zip -> entries = calloc ( ( size_t ) zip -> numFiles , sizeof ( * zip -> entries ) ) ; if ( zip -> entries == NULL ) return ( - 1 ) ; entries = zip -> entries ; empty_streams = 0 ; for ( ; ; ) { int type ; uint64_t size ; size_t ll ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; if ( type == kEnd ) break ; if ( parse_7zip_uint64 ( a , & size ) < 0 ) return ( - 1 ) ; if ( zip -> header_bytes_remaining < size ) return ( - 1 ) ; ll = ( size_t ) size ; switch ( type ) { case kEmptyStream : <S2SV_StartBug> h -> emptyStreamBools = calloc ( ( size_t ) zip -> numFiles , <S2SV_EndBug> sizeof ( * h -> emptyStreamBools ) ) ; if ( h -> emptyStreamBools == NULL ) return ( - 1 ) ; if ( read_Bools ( a , h -> emptyStreamBools , ( size_t ) zip -> numFiles ) < 0 ) return ( - 1 ) ; empty_streams = 0 ; for ( i = 0 ; i < zip -> numFiles ; i ++ ) { if ( h -> emptyStreamBools [ i ] ) empty_streams ++ ; } break ; case kEmptyFile : if ( empty_streams <= 0 ) { if ( header_bytes ( a , ll ) == NULL ) return ( - 1 ) ; break ; } <S2SV_StartBug> h -> emptyFileBools = calloc ( empty_streams , <S2SV_EndBug> sizeof ( * h -> emptyFileBools ) ) ; if ( h -> emptyFileBools == NULL ) return ( - 1 ) ; if ( read_Bools ( a , h -> emptyFileBools , empty_streams ) < 0 ) return ( - 1 ) ; break ; case kAnti : if ( empty_streams <= 0 ) { if ( header_bytes ( a , ll ) == NULL ) return ( - 1 ) ; break ; } <S2SV_StartBug> h -> antiBools = calloc ( empty_streams , <S2SV_EndBug> sizeof ( * h -> antiBools ) ) ; if ( h -> antiBools == NULL ) return ( - 1 ) ; if ( read_Bools ( a , h -> antiBools , empty_streams ) < 0 ) return ( - 1 ) ; break ; case kCTime : case kATime : case kMTime : if ( read_Times ( a , h , type ) < 0 ) return ( - 1 ) ; break ; case kName : { unsigned char * np ; size_t nl , nb ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; ll -- ; <S2SV_StartBug> if ( ( ll & 1 ) || ll < zip -> numFiles * 4 ) <S2SV_EndBug> return ( - 1 ) ; zip -> entry_names = malloc ( ll ) ; if ( zip -> entry_names == NULL ) return ( - 1 ) ; np = zip -> entry_names ; nb = ll ; while ( nb ) { size_t b ; if ( nb > UBUFF_SIZE ) b = UBUFF_SIZE ; else b = nb ; if ( ( p = header_bytes ( a , b ) ) == NULL ) return ( - 1 ) ; memcpy ( np , p , b ) ; np += b ; nb -= b ; } np = zip -> entry_names ; nl = ll ; for ( i = 0 ; i < zip -> numFiles ; i ++ ) { entries [ i ] . utf16name = np ; # if defined ( _WIN32 ) && ! defined ( __CYGWIN__ ) && defined ( _DEBUG ) entries [ i ] . wname = ( wchar_t * ) np ; # endif while ( nl >= 2 && ( np [ 0 ] || np [ 1 ] ) ) { np += 2 ; nl -= 2 ; } if ( nl < 2 ) return ( - 1 ) ; entries [ i ] . name_len = np - entries [ i ] . utf16name ; np += 2 ; nl -= 2 ; } break ; } case kAttributes : { int allAreDefined ; if ( ( p = header_bytes ( a , 2 ) ) == NULL ) return ( - 1 ) ; allAreDefined = * p ; <S2SV_StartBug> h -> attrBools = calloc ( ( size_t ) zip -> numFiles , <S2SV_EndBug> sizeof ( * h -> attrBools ) ) ; if ( h -> attrBools == NULL ) return ( - 1 ) ; if ( allAreDefined ) memset ( h -> attrBools , 1 , ( size_t ) zip -> numFiles ) ; else { if ( read_Bools ( a , h -> attrBools , ( size_t ) zip -> numFiles ) < 0 ) return ( - 1 ) ; } for ( i = 0 ; i < zip -> numFiles ; i ++ ) { if ( h -> attrBools [ i ] ) { if ( ( p = header_bytes ( a , 4 ) ) == NULL ) return ( - 1 ) ; entries [ i ] . attr = archive_le32dec ( p ) ; } } break ; } case kDummy : if ( ll == 0 ) break ; default : if ( header_bytes ( a , ll ) == NULL ) return ( - 1 ) ; break ; } } folders = si -> ci . folders ; eindex = sindex = 0 ; folderIndex = indexInFolder = 0 ; for ( i = 0 ; i < zip -> numFiles ; i ++ ) { if ( h -> emptyStreamBools == NULL || h -> emptyStreamBools [ i ] == 0 ) entries [ i ] . flg |= HAS_STREAM ; entries [ i ] . mode = entries [ i ] . attr >> 16 ; if ( entries [ i ] . flg & HAS_STREAM ) { if ( ( size_t ) sindex >= si -> ss . unpack_streams ) return ( - 1 ) ; if ( entries [ i ] . mode == 0 ) entries [ i ] . mode = AE_IFREG | 0666 ; if ( si -> ss . digestsDefined [ sindex ] ) entries [ i ] . flg |= CRC32_IS_SET ; entries [ i ] . ssIndex = sindex ; sindex ++ ; } else { int dir ; if ( h -> emptyFileBools == NULL ) dir = 1 ; else { if ( h -> emptyFileBools [ eindex ] ) dir = 0 ; else dir = 1 ; eindex ++ ; } if ( entries [ i ] . mode == 0 ) { if ( dir ) entries [ i ] . mode = AE_IFDIR | 0777 ; else entries [ i ] . mode = AE_IFREG | 0666 ; } else if ( dir && ( entries [ i ] . mode & AE_IFMT ) != AE_IFDIR ) { entries [ i ] . mode &= ~ AE_IFMT ; entries [ i ] . mode |= AE_IFDIR ; } if ( ( entries [ i ] . mode & AE_IFMT ) == AE_IFDIR && entries [ i ] . name_len >= 2 && ( entries [ i ] . utf16name [ entries [ i ] . name_len - 2 ] != '/' || entries [ i ] . utf16name [ entries [ i ] . name_len - 1 ] != 0 ) ) { entries [ i ] . utf16name [ entries [ i ] . name_len ] = '/' ; entries [ i ] . utf16name [ entries [ i ] . name_len + 1 ] = 0 ; entries [ i ] . name_len += 2 ; } entries [ i ] . ssIndex = - 1 ; } if ( entries [ i ] . attr & 0x01 ) entries [ i ] . mode &= ~ 0222 ; if ( ( entries [ i ] . flg & HAS_STREAM ) == 0 && indexInFolder == 0 ) { entries [ i ] . folderIndex = - 1 ; continue ; } if ( indexInFolder == 0 ) { for ( ; ; ) { if ( folderIndex >= si -> ci . numFolders ) return ( - 1 ) ; if ( folders [ folderIndex ] . numUnpackStreams ) break ; folderIndex ++ ; } } entries [ i ] . folderIndex = folderIndex ; if ( ( entries [ i ] . flg & HAS_STREAM ) == 0 ) continue ; indexInFolder ++ ; if ( indexInFolder >= folders [ folderIndex ] . numUnpackStreams ) { folderIndex ++ ; indexInFolder = 0 ; } } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case kEmptyStream : if ( h -> emptyStreamBools != NULL ) return ( - 1 ) ; <S2SV_ModStart> break ; } if ( h -> emptyFileBools != NULL ) return ( - 1 ) ; <S2SV_ModStart> break ; } if ( h -> antiBools != NULL ) return ( - 1 ) ; <S2SV_ModStart> numFiles * 4 ) return ( - 1 ) ; if ( zip -> entry_names != NULL <S2SV_ModStart> * p ; if ( h -> attrBools != NULL ) return ( - 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13304\n\n```\nCWE-617 static enum AVPixelFormat h263_get_format ( AVCodecContext * avctx ) <S2SV_StartBug> { <S2SV_EndBug> if ( avctx -> bits_per_raw_sample > 8 ) { <S2SV_StartBug> av_assert1 ( avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) ; <S2SV_EndBug> return avctx -> pix_fmt ; } if ( avctx -> codec -> id == AV_CODEC_ID_MSS2 ) return AV_PIX_FMT_YUV420P ; if ( CONFIG_GRAY && ( avctx -> flags & AV_CODEC_FLAG_GRAY ) ) { if ( avctx -> color_range == AVCOL_RANGE_UNSPECIFIED ) avctx -> color_range = AVCOL_RANGE_MPEG ; return AV_PIX_FMT_GRAY8 ; } return avctx -> pix_fmt = ff_get_format ( avctx , avctx -> codec -> pix_fmts ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> avctx ) { MpegEncContext * s = avctx -> priv_data ; <S2SV_ModStart> { av_assert1 ( s -> studio_profile <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 int read_file ( struct sc_card * card , char * str_path , unsigned char * * data , size_t * data_len ) { struct sc_path path ; struct sc_file * file ; unsigned char * p ; int ok = 0 ; int r ; size_t len ; sc_format_path ( str_path , & path ) ; if ( SC_SUCCESS != sc_select_file ( card , & path , & file ) ) { goto err ; } <S2SV_StartBug> len = file ? file -> size : 4096 ; <S2SV_EndBug> p = realloc ( * data , len ) ; if ( ! p ) { goto err ; } * data = p ; * data_len = len ; r = sc_read_binary ( card , 0 , p , len , 0 ) ; if ( r < 0 ) goto err ; * data_len = r ; ok = 1 ; err : sc_file_free ( file ) ; return ok ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = file && file -> size > 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t decoder_peek_si ( const uint8_t * data , unsigned int data_sz , vpx_codec_stream_info_t * si ) { <S2SV_StartBug> if ( data_sz <= 8 ) <S2SV_EndBug> return VPX_CODEC_UNSUP_BITSTREAM ; if ( data + data_sz <= data ) return VPX_CODEC_INVALID_PARAM ; si -> is_kf = 0 ; si -> w = si -> h = 0 ; { <S2SV_StartBug> struct vp9_read_bit_buffer rb = { data , data + data_sz , 0 , NULL , NULL } ; <S2SV_EndBug> const int frame_marker = vp9_rb_read_literal ( & rb , 2 ) ; const int version = vp9_rb_read_bit ( & rb ) ; ( void ) vp9_rb_read_bit ( & rb ) ; if ( frame_marker != VP9_FRAME_MARKER ) return VPX_CODEC_UNSUP_BITSTREAM ; if ( version > 1 ) return VPX_CODEC_UNSUP_BITSTREAM ; if ( vp9_rb_read_bit ( & rb ) ) { return VPX_CODEC_OK ; } si -> is_kf = ! vp9_rb_read_bit ( & rb ) ; if ( si -> is_kf ) { const int sRGB = 7 ; int colorspace ; rb . bit_offset += 1 ; rb . bit_offset += 1 ; if ( vp9_rb_read_literal ( & rb , 8 ) != VP9_SYNC_CODE_0 || vp9_rb_read_literal ( & rb , 8 ) != VP9_SYNC_CODE_1 || vp9_rb_read_literal ( & rb , 8 ) != VP9_SYNC_CODE_2 ) { return VPX_CODEC_UNSUP_BITSTREAM ; } colorspace = vp9_rb_read_literal ( & rb , 3 ) ; if ( colorspace != sRGB ) { rb . bit_offset += 1 ; if ( version == 1 ) { rb . bit_offset += 2 ; rb . bit_offset += 1 ; } } else { if ( version == 1 ) { rb . bit_offset += 1 ; } else { return VPX_CODEC_UNSUP_BITSTREAM ; } } si -> w = vp9_rb_read_literal ( & rb , 16 ) + 1 ; si -> h = vp9_rb_read_literal ( & rb , 16 ) + 1 ; } } return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> si ) { return decoder_peek_si_internal ( data , data_sz , si <S2SV_ModEnd> , NULL , <S2SV_ModStart> NULL , NULL , NULL ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15931\n\n```\nCWE-125 static Sdb * store_versioninfo_gnu_verneed ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { ut8 * end , * need = NULL ; const char * section_name = \"\" ; Elf_ ( Shdr ) * link_shdr = NULL ; const char * link_section_name = \"\" ; Sdb * sdb_vernaux = NULL ; Sdb * sdb_version = NULL ; Sdb * sdb = NULL ; int i , cnt ; if ( ! bin || ! bin -> dynstr ) { return NULL ; } if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return NULL ; } if ( shdr -> sh_size < 1 ) { return NULL ; } sdb = sdb_new0 ( ) ; if ( ! sdb ) { return NULL ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! ( need = ( ut8 * ) calloc ( R_MAX ( 1 , shdr -> sh_size ) , sizeof ( ut8 ) ) ) ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Elf_(Verneed)\\\\n\" ) ; goto beach ; } end = need + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"num_entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; if ( shdr -> sh_offset > bin -> size || shdr -> sh_offset + shdr -> sh_size > bin -> size ) { goto beach ; } if ( shdr -> sh_offset + shdr -> sh_size < shdr -> sh_size ) { goto beach ; } i = r_buf_read_at ( bin -> b , shdr -> sh_offset , need , shdr -> sh_size ) ; if ( i < 0 ) goto beach ; for ( i = 0 , cnt = 0 ; cnt < shdr -> sh_info ; ++ cnt ) { int j , isum ; ut8 * vstart = need + i ; Elf_ ( Verneed ) vvn = { 0 } ; if ( vstart + sizeof ( Elf_ ( Verneed ) ) > end ) { goto beach ; } Elf_ ( Verneed ) * entry = & vvn ; char key [ 32 ] = { 0 } ; sdb_version = sdb_new0 ( ) ; if ( ! sdb_version ) { goto beach ; } j = 0 ; vvn . vn_version = READ16 ( vstart , j ) vvn . vn_cnt = READ16 ( vstart , j ) vvn . vn_file = READ32 ( vstart , j ) vvn . vn_aux = READ32 ( vstart , j ) vvn . vn_next = READ32 ( vstart , j ) sdb_num_set ( sdb_version , \"vn_version\" , entry -> vn_version , 0 ) ; sdb_num_set ( sdb_version , \"idx\" , i , 0 ) ; if ( entry -> vn_file > bin -> dynstr_size ) { goto beach ; } { char * s = r_str_ndup ( & bin -> dynstr [ entry -> vn_file ] , 16 ) ; sdb_set ( sdb_version , \"file_name\" , s , 0 ) ; free ( s ) ; } sdb_num_set ( sdb_version , \"cnt\" , entry -> vn_cnt , 0 ) ; <S2SV_StartBug> vstart += entry -> vn_aux ; <S2SV_EndBug> for ( j = 0 , isum = i + entry -> vn_aux ; j < entry -> vn_cnt && vstart + sizeof ( Elf_ ( Vernaux ) ) <= end ; ++ j ) { int k ; Elf_ ( Vernaux ) * aux = NULL ; Elf_ ( Vernaux ) vaux = { 0 } ; sdb_vernaux = sdb_new0 ( ) ; if ( ! sdb_vernaux ) { goto beach ; } aux = ( Elf_ ( Vernaux ) * ) & vaux ; k = 0 ; vaux . vna_hash = READ32 ( vstart , k ) vaux . vna_flags = READ16 ( vstart , k ) vaux . vna_other = READ16 ( vstart , k ) vaux . vna_name = READ32 ( vstart , k ) vaux . vna_next = READ32 ( vstart , k ) if ( aux -> vna_name > bin -> dynstr_size ) { goto beach ; } sdb_num_set ( sdb_vernaux , \"idx\" , isum , 0 ) ; if ( aux -> vna_name > 0 && aux -> vna_name + 8 < bin -> dynstr_size ) { char name [ 16 ] ; strncpy ( name , & bin -> dynstr [ aux -> vna_name ] , sizeof ( name ) - 1 ) ; name [ sizeof ( name ) - 1 ] = 0 ; sdb_set ( sdb_vernaux , \"name\" , name , 0 ) ; } sdb_set ( sdb_vernaux , \"flags\" , get_ver_flags ( aux -> vna_flags ) , 0 ) ; sdb_num_set ( sdb_vernaux , \"version\" , aux -> vna_other , 0 ) ; isum += aux -> vna_next ; vstart += aux -> vna_next ; snprintf ( key , sizeof ( key ) , \"vernaux%d\" , j ) ; sdb_ns_set ( sdb_version , key , sdb_vernaux ) ; } if ( ( int ) entry -> vn_next < 0 ) { bprintf ( \"Invalid<S2SV_blank>vn_next\\\\n\" ) ; break ; } i += entry -> vn_next ; snprintf ( key , sizeof ( key ) , \"version%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_version ) ; if ( ! entry -> vn_next ) { break ; } } free ( need ) ; return sdb ; beach : free ( need ) ; sdb_free ( sdb_vernaux ) ; sdb_free ( sdb_version ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; st32 vnaux = entry -> vn_aux ; if ( vnaux < 1 ) { goto beach ; } vstart += vnaux <S2SV_ModEnd> ; for (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11368\n\n```\nCWE-617 static krb5_error_code kdc_process_for_user ( kdc_realm_t * kdc_active_realm , krb5_pa_data * pa_data , krb5_keyblock * tgs_session , krb5_pa_s4u_x509_user * * s4u_x509_user , const char * * status ) { krb5_error_code code ; krb5_pa_for_user * for_user ; krb5_data req_data ; req_data . length = pa_data -> length ; req_data . data = ( char * ) pa_data -> contents ; code = decode_krb5_pa_for_user ( & req_data , & for_user ) ; if ( code ) <S2SV_StartBug> return code ; <S2SV_EndBug> code = verify_for_user_checksum ( kdc_context , tgs_session , for_user ) ; if ( code ) { * status = \"INVALID_S4U2SELF_CHECKSUM\" ; krb5_free_pa_for_user ( kdc_context , for_user ) ; return code ; } * s4u_x509_user = calloc ( 1 , sizeof ( krb5_pa_s4u_x509_user ) ) ; if ( * s4u_x509_user == NULL ) { krb5_free_pa_for_user ( kdc_context , for_user ) ; return ENOMEM ; } ( * s4u_x509_user ) -> user_id . user = for_user -> user ; for_user -> user = NULL ; krb5_free_pa_for_user ( kdc_context , for_user ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( code ) { * status = \"DECODE_PA_FOR_USER\" ; return code ; } <S2SV_ModEnd> code = verify_for_user_checksum\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static void perf_event_interrupt ( struct pt_regs * regs ) { int i ; struct cpu_hw_events * cpuhw = & __get_cpu_var ( cpu_hw_events ) ; struct perf_event * event ; unsigned long val ; int found = 0 ; int nmi ; if ( cpuhw -> n_limited ) freeze_limited_counters ( cpuhw , mfspr ( SPRN_PMC5 ) , mfspr ( SPRN_PMC6 ) ) ; perf_read_regs ( regs ) ; nmi = perf_intr_is_nmi ( regs ) ; if ( nmi ) nmi_enter ( ) ; else irq_enter ( ) ; for ( i = 0 ; i < cpuhw -> n_events ; ++ i ) { event = cpuhw -> event [ i ] ; if ( ! event -> hw . idx || is_limited_pmc ( event -> hw . idx ) ) continue ; val = read_pmc ( event -> hw . idx ) ; if ( ( int ) val < 0 ) { found = 1 ; <S2SV_StartBug> record_and_restart ( event , val , regs , nmi ) ; <S2SV_EndBug> } } if ( ! found ) { for ( i = 0 ; i < ppmu -> n_counter ; ++ i ) { if ( is_limited_pmc ( i + 1 ) ) continue ; val = read_pmc ( i + 1 ) ; if ( pmc_overflow ( val ) ) write_pmc ( i + 1 , 0 ) ; } } write_mmcr0 ( cpuhw , cpuhw -> mmcr [ 0 ] ) ; if ( nmi ) nmi_exit ( ) ; else irq_exit ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val , regs <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19923\n\n```\nCWE-476 static int flattenSubquery ( Parse * pParse , Select * p , int iFrom , int isAgg ) { const char * zSavedAuthContext = pParse -> zAuthContext ; Select * pParent ; Select * pSub ; Select * pSub1 ; SrcList * pSrc ; SrcList * pSubSrc ; int iParent ; int iNewParent = - 1 ; int isLeftJoin = 0 ; int i ; Expr * pWhere ; struct SrcList_item * pSubitem ; sqlite3 * db = pParse -> db ; assert ( p != 0 ) ; assert ( p -> pPrior == 0 ) ; if ( OptimizationDisabled ( db , SQLITE_QueryFlattener ) ) return 0 ; pSrc = p -> pSrc ; assert ( pSrc && iFrom >= 0 && iFrom < pSrc -> nSrc ) ; pSubitem = & pSrc -> a [ iFrom ] ; iParent = pSubitem -> iCursor ; pSub = pSubitem -> pSelect ; assert ( pSub != 0 ) ; # ifndef SQLITE_OMIT_WINDOWFUNC if ( p -> pWin || pSub -> pWin ) return 0 ; # endif pSubSrc = pSub -> pSrc ; assert ( pSubSrc ) ; if ( pSub -> pLimit && p -> pLimit ) return 0 ; if ( pSub -> pLimit && pSub -> pLimit -> pRight ) return 0 ; if ( ( p -> selFlags & SF_Compound ) != 0 && pSub -> pLimit ) { return 0 ; } if ( pSubSrc -> nSrc == 0 ) return 0 ; if ( pSub -> selFlags & SF_Distinct ) return 0 ; if ( pSub -> pLimit && ( pSrc -> nSrc > 1 || isAgg ) ) { return 0 ; } if ( p -> pOrderBy && pSub -> pOrderBy ) { return 0 ; } if ( isAgg && pSub -> pOrderBy ) return 0 ; if ( pSub -> pLimit && p -> pWhere ) return 0 ; if ( pSub -> pLimit && ( p -> selFlags & SF_Distinct ) != 0 ) { return 0 ; } if ( pSub -> selFlags & ( SF_Recursive ) ) { return 0 ; } if ( ( pSubitem -> fg . jointype & JT_OUTER ) != 0 ) { isLeftJoin = 1 ; <S2SV_StartBug> if ( pSubSrc -> nSrc > 1 || isAgg || IsVirtual ( pSubSrc -> a [ 0 ] . pTab ) ) { <S2SV_EndBug> return 0 ; } } # ifdef SQLITE_EXTRA_IFNULLROW else if ( iFrom > 0 && ! isAgg ) { isLeftJoin = - 1 ; } # endif if ( pSub -> pPrior ) { if ( pSub -> pOrderBy ) { return 0 ; } if ( isAgg || ( p -> selFlags & SF_Distinct ) != 0 || pSrc -> nSrc != 1 ) { return 0 ; } for ( pSub1 = pSub ; pSub1 ; pSub1 = pSub1 -> pPrior ) { testcase ( ( pSub1 -> selFlags & ( SF_Distinct | SF_Aggregate ) ) == SF_Distinct ) ; testcase ( ( pSub1 -> selFlags & ( SF_Distinct | SF_Aggregate ) ) == SF_Aggregate ) ; assert ( pSub -> pSrc != 0 ) ; assert ( pSub -> pEList -> nExpr == pSub1 -> pEList -> nExpr ) ; if ( ( pSub1 -> selFlags & ( SF_Distinct | SF_Aggregate ) ) != 0 || ( pSub1 -> pPrior && pSub1 -> op != TK_ALL ) || pSub1 -> pSrc -> nSrc < 1 ) { return 0 ; } testcase ( pSub1 -> pSrc -> nSrc > 1 ) ; } if ( p -> pOrderBy ) { int ii ; for ( ii = 0 ; ii < p -> pOrderBy -> nExpr ; ii ++ ) { if ( p -> pOrderBy -> a [ ii ] . u . x . iOrderByCol == 0 ) return 0 ; } } } assert ( ( p -> selFlags & SF_Recursive ) == 0 || pSub -> pPrior == 0 ) ; SELECTTRACE ( 1 , pParse , p , ( \"flatten<S2SV_blank>%u.%p<S2SV_blank>from<S2SV_blank>term<S2SV_blank>%d\\\\n\" , pSub -> selId , pSub , iFrom ) ) ; pParse -> zAuthContext = pSubitem -> zName ; TESTONLY ( i = ) sqlite3AuthCheck ( pParse , SQLITE_SELECT , 0 , 0 , 0 ) ; testcase ( i == SQLITE_DENY ) ; pParse -> zAuthContext = zSavedAuthContext ; for ( pSub = pSub -> pPrior ; pSub ; pSub = pSub -> pPrior ) { Select * pNew ; ExprList * pOrderBy = p -> pOrderBy ; Expr * pLimit = p -> pLimit ; Select * pPrior = p -> pPrior ; p -> pOrderBy = 0 ; p -> pSrc = 0 ; p -> pPrior = 0 ; p -> pLimit = 0 ; pNew = sqlite3SelectDup ( db , p , 0 ) ; p -> pLimit = pLimit ; p -> pOrderBy = pOrderBy ; p -> pSrc = pSrc ; p -> op = TK_ALL ; if ( pNew == 0 ) { p -> pPrior = pPrior ; } else { pNew -> pPrior = pPrior ; if ( pPrior ) pPrior -> pNext = pNew ; pNew -> pNext = p ; p -> pPrior = pNew ; SELECTTRACE ( 2 , pParse , p , ( \"compound-subquery<S2SV_blank>flattener\" \"<S2SV_blank>creates<S2SV_blank>%u<S2SV_blank>as<S2SV_blank>peer\\\\n\" , pNew -> selId ) ) ; } if ( db -> mallocFailed ) return 1 ; } pSub = pSub1 = pSubitem -> pSelect ; sqlite3DbFree ( db , pSubitem -> zDatabase ) ; sqlite3DbFree ( db , pSubitem -> zName ) ; sqlite3DbFree ( db , pSubitem -> zAlias ) ; pSubitem -> zDatabase = 0 ; pSubitem -> zName = 0 ; pSubitem -> zAlias = 0 ; pSubitem -> pSelect = 0 ; if ( ALWAYS ( pSubitem -> pTab != 0 ) ) { Table * pTabToDel = pSubitem -> pTab ; if ( pTabToDel -> nTabRef == 1 ) { Parse * pToplevel = sqlite3ParseToplevel ( pParse ) ; pTabToDel -> pNextZombie = pToplevel -> pZombieTab ; pToplevel -> pZombieTab = pTabToDel ; } else { pTabToDel -> nTabRef -- ; } pSubitem -> pTab = 0 ; } for ( pParent = p ; pParent ; pParent = pParent -> pPrior , pSub = pSub -> pPrior ) { int nSubSrc ; u8 jointype = 0 ; assert ( pSub != 0 ) ; pSubSrc = pSub -> pSrc ; nSubSrc = pSubSrc -> nSrc ; pSrc = pParent -> pSrc ; if ( pSrc ) { assert ( pParent == p ) ; jointype = pSubitem -> fg . jointype ; } else { assert ( pParent != p ) ; pSrc = sqlite3SrcListAppend ( pParse , 0 , 0 , 0 ) ; if ( pSrc == 0 ) break ; pParent -> pSrc = pSrc ; } if ( nSubSrc > 1 ) { pSrc = sqlite3SrcListEnlarge ( pParse , pSrc , nSubSrc - 1 , iFrom + 1 ) ; if ( pSrc == 0 ) break ; pParent -> pSrc = pSrc ; } for ( i = 0 ; i < nSubSrc ; i ++ ) { sqlite3IdListDelete ( db , pSrc -> a [ i + iFrom ] . pUsing ) ; assert ( pSrc -> a [ i + iFrom ] . fg . isTabFunc == 0 ) ; pSrc -> a [ i + iFrom ] = pSubSrc -> a [ i ] ; iNewParent = pSubSrc -> a [ i ] . iCursor ; memset ( & pSubSrc -> a [ i ] , 0 , sizeof ( pSubSrc -> a [ i ] ) ) ; } pSrc -> a [ iFrom ] . fg . jointype = jointype ; if ( pSub -> pOrderBy ) { ExprList * pOrderBy = pSub -> pOrderBy ; for ( i = 0 ; i < pOrderBy -> nExpr ; i ++ ) { pOrderBy -> a [ i ] . u . x . iOrderByCol = 0 ; } assert ( pParent -> pOrderBy == 0 ) ; pParent -> pOrderBy = pOrderBy ; pSub -> pOrderBy = 0 ; } pWhere = pSub -> pWhere ; pSub -> pWhere = 0 ; if ( isLeftJoin > 0 ) { sqlite3SetJoinExpr ( pWhere , iNewParent ) ; } pParent -> pWhere = sqlite3ExprAnd ( pParse , pWhere , pParent -> pWhere ) ; if ( db -> mallocFailed == 0 ) { SubstContext x ; x . pParse = pParse ; x . iTable = iParent ; x . iNewTable = iNewParent ; x . isLeftJoin = isLeftJoin ; x . pEList = pSub -> pEList ; substSelect ( & x , pParent , 0 ) ; } pParent -> selFlags |= pSub -> selFlags & SF_Compound ; assert ( ( pSub -> selFlags & SF_Distinct ) == 0 ) ; if ( pSub -> pLimit ) { pParent -> pLimit = pSub -> pLimit ; pSub -> pLimit = 0 ; } } sqlite3SelectDelete ( db , pSub1 ) ; # if SELECTTRACE_ENABLED if ( sqlite3SelectTrace & 0x100 ) { SELECTTRACE ( 0x100 , pParse , p , ( \"After<S2SV_blank>flattening:\\\\n\" ) ) ; sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . pTab ) || ( p -> selFlags & SF_Distinct ) != 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int rd_pick_intra4x4block ( MACROBLOCK * x , BLOCK * be , BLOCKD * b , B_PREDICTION_MODE * best_mode , const int * bmode_costs , ENTROPY_CONTEXT * a , ENTROPY_CONTEXT * l , int * bestrate , int * bestratey , int * bestdistortion ) { B_PREDICTION_MODE mode ; int best_rd = INT_MAX ; int rate = 0 ; int distortion ; ENTROPY_CONTEXT ta = * a , tempa = * a ; ENTROPY_CONTEXT tl = * l , templ = * l ; <S2SV_StartBug> DECLARE_ALIGNED_ARRAY ( 16 , unsigned char , best_predictor , 16 * 4 ) ; <S2SV_EndBug> <S2SV_StartBug> DECLARE_ALIGNED_ARRAY ( 16 , short , best_dqcoeff , 16 ) ; <S2SV_EndBug> int dst_stride = x -> e_mbd . dst . y_stride ; unsigned char * dst = x -> e_mbd . dst . y_buffer + b -> offset ; unsigned char * Above = dst - dst_stride ; unsigned char * yleft = dst - 1 ; unsigned char top_left = Above [ - 1 ] ; for ( mode = B_DC_PRED ; mode <= B_HU_PRED ; mode ++ ) { int this_rd ; int ratey ; rate = bmode_costs [ mode ] ; vp8_intra4x4_predict ( Above , yleft , dst_stride , mode , b -> predictor , 16 , top_left ) ; vp8_subtract_b ( be , b , 16 ) ; x -> short_fdct4x4 ( be -> src_diff , be -> coeff , 32 ) ; x -> quantize_b ( be , b ) ; tempa = ta ; templ = tl ; ratey = cost_coeffs ( x , b , PLANE_TYPE_Y_WITH_DC , & tempa , & templ ) ; rate += ratey ; distortion = vp8_block_error ( be -> coeff , b -> dqcoeff ) >> 2 ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate , distortion ) ; if ( this_rd < best_rd ) { * bestrate = rate ; * bestratey = ratey ; * bestdistortion = distortion ; best_rd = this_rd ; * best_mode = mode ; * a = tempa ; * l = templ ; copy_predictor ( best_predictor , b -> predictor ) ; <S2SV_StartBug> vpx_memcpy ( best_dqcoeff , b -> dqcoeff , 32 ) ; <S2SV_EndBug> } } b -> bmi . as_mode = * best_mode ; vp8_short_idct4x4llm ( best_dqcoeff , best_predictor , 16 , dst , dst_stride ) ; return best_rd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * l ; DECLARE_ALIGNED <S2SV_ModEnd> ( 16 , <S2SV_ModStart> char , best_predictor [ <S2SV_ModEnd> 16 * 4 <S2SV_ModStart> 16 * 4 ] ) ; DECLARE_ALIGNED <S2SV_ModEnd> ( 16 , <S2SV_ModStart> short , best_dqcoeff [ 16 ] <S2SV_ModEnd> ) ; int <S2SV_ModStart> predictor ) ; memcpy <S2SV_ModEnd> ( best_dqcoeff ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5550\n\n```\nCWE-200 static void pipe_advance ( struct iov_iter * i , size_t size ) { struct pipe_inode_info * pipe = i -> pipe ; <S2SV_StartBug> struct pipe_buffer * buf ; <S2SV_EndBug> int idx = i -> idx ; size_t off = i -> iov_offset , orig_sz ; if ( unlikely ( i -> count < size ) ) size = i -> count ; <S2SV_StartBug> orig_sz = size ; <S2SV_EndBug> if ( size ) { <S2SV_StartBug> if ( off ) <S2SV_EndBug> <S2SV_StartBug> size += off - pipe -> bufs [ idx ] . offset ; <S2SV_EndBug> while ( 1 ) { buf = & pipe -> bufs [ idx ] ; <S2SV_StartBug> if ( size <= buf -> len ) <S2SV_EndBug> break ; <S2SV_StartBug> size -= buf -> len ; <S2SV_EndBug> idx = next_idx ( idx , pipe ) ; } <S2SV_StartBug> buf -> len = size ; <S2SV_EndBug> i -> idx = idx ; <S2SV_StartBug> off = i -> iov_offset = buf -> offset + size ; <S2SV_EndBug> } if ( off ) idx = next_idx ( idx , pipe ) ; if ( pipe -> nrbufs ) { int unused = ( pipe -> curbuf + pipe -> nrbufs ) & ( pipe -> buffers - 1 ) ; while ( idx != unused ) { pipe_buf_release ( pipe , & pipe -> bufs [ idx ] ) ; idx = next_idx ( idx , pipe ) ; pipe -> nrbufs -- ; } } <S2SV_StartBug> i -> count -= orig_sz ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pipe ; <S2SV_ModEnd> if ( unlikely <S2SV_ModStart> -> count ; <S2SV_ModEnd> if ( size <S2SV_ModStart> size ) { struct pipe_buffer * buf ; size_t off = i -> iov_offset , left = size ; int idx = i -> idx ; <S2SV_ModStart> ( off ) left <S2SV_ModEnd> += off - <S2SV_ModStart> ; if ( left <S2SV_ModEnd> <= buf -> <S2SV_ModStart> ) break ; left <S2SV_ModEnd> -= buf -> <S2SV_ModStart> ) ; } <S2SV_ModEnd> i -> idx <S2SV_ModStart> = idx ; <S2SV_ModEnd> i -> iov_offset <S2SV_ModStart> -> offset + left ; <S2SV_ModEnd> } i -> <S2SV_ModStart> -> count -= size ; pipe_truncate ( i ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18200\n\n```\nCWE-20 int f2fs_trim_fs ( struct f2fs_sb_info * sbi , struct fstrim_range * range ) { __u64 start = F2FS_BYTES_TO_BLK ( range -> start ) ; __u64 end = start + F2FS_BYTES_TO_BLK ( range -> len ) - 1 ; unsigned int start_segno , end_segno ; struct cp_control cpc ; int err = 0 ; if ( start >= MAX_BLKADDR ( sbi ) || range -> len < sbi -> blocksize ) return - EINVAL ; cpc . trimmed = 0 ; if ( end <= MAIN_BLKADDR ( sbi ) ) goto out ; if ( is_sbi_flag_set ( sbi , SBI_NEED_FSCK ) ) { f2fs_msg ( sbi -> sb , KERN_WARNING , \"Found<S2SV_blank>FS<S2SV_blank>corruption,<S2SV_blank>run<S2SV_blank>fsck<S2SV_blank>to<S2SV_blank>fix.\" ) ; goto out ; } start_segno = ( start <= MAIN_BLKADDR ( sbi ) ) ? 0 : GET_SEGNO ( sbi , start ) ; end_segno = ( end >= MAX_BLKADDR ( sbi ) ) ? MAIN_SEGS ( sbi ) - 1 : GET_SEGNO ( sbi , end ) ; cpc . reason = CP_DISCARD ; cpc . trim_minlen = max_t ( __u64 , 1 , F2FS_BYTES_TO_BLK ( range -> minlen ) ) ; for ( ; start_segno <= end_segno ; start_segno = cpc . trim_end + 1 ) { cpc . trim_start = start_segno ; if ( sbi -> discard_blks == 0 ) break ; else if ( sbi -> discard_blks < BATCHED_TRIM_BLOCKS ( sbi ) ) cpc . trim_end = end_segno ; else cpc . trim_end = min_t ( unsigned int , rounddown ( start_segno + BATCHED_TRIM_SEGMENTS ( sbi ) , sbi -> segs_per_sec ) - 1 , end_segno ) ; mutex_lock ( & sbi -> gc_mutex ) ; err = write_checkpoint ( sbi , & cpc ) ; mutex_unlock ( & sbi -> gc_mutex ) ; if ( err ) break ; schedule ( ) ; } mark_discard_range_all ( sbi ) ; <S2SV_StartBug> f2fs_wait_discard_bios ( sbi ) ; <S2SV_EndBug> out : range -> len = F2FS_BLK_TO_BYTES ( cpc . trimmed ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> f2fs_wait_discard_bios ( sbi , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1176\n\n```\nCWE-119 static PyObject * _pyfribidi_log2vis ( PyObject * self , PyObject * args , PyObject * kw ) { <S2SV_StartBug> PyObject * logical = NULL ; <S2SV_EndBug> <S2SV_StartBug> FriBidiParType base = FRIBIDI_TYPE_RTL ; <S2SV_EndBug> const char * encoding = \"utf-8\" ; int clean = 0 ; int reordernsm = 1 ; static char * kwargs [ ] = <S2SV_StartBug> { \"logical\" , \"base_direction\" , \"encoding\" , \"clean\" , \"reordernsm\" , NULL } ; <S2SV_EndBug> <S2SV_StartBug> if ( ! PyArg_ParseTupleAndKeywords ( args , kw , \"O|isii\" , kwargs , <S2SV_EndBug> <S2SV_StartBug> & logical , & base , & encoding , & clean , & reordernsm ) ) <S2SV_EndBug> <S2SV_StartBug> return NULL ; <S2SV_EndBug> if ( ! ( base == FRIBIDI_TYPE_RTL || <S2SV_StartBug> base == FRIBIDI_TYPE_LTR || base == FRIBIDI_TYPE_ON ) ) <S2SV_EndBug> return PyErr_Format ( PyExc_ValueError , \"invalid<S2SV_blank>value<S2SV_blank>%d:<S2SV_blank>use<S2SV_blank>either<S2SV_blank>RTL,<S2SV_blank>LTR<S2SV_blank>or<S2SV_blank>ON\" , base ) ; <S2SV_StartBug> if ( PyUnicode_Check ( logical ) ) <S2SV_EndBug> return log2vis_unicode ( logical , base , clean , reordernsm ) ; <S2SV_StartBug> else if ( PyString_Check ( logical ) ) <S2SV_EndBug> return log2vis_encoded_string ( logical , encoding , base , clean , reordernsm ) ; else return PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>unicode<S2SV_blank>or<S2SV_blank>str,<S2SV_blank>not<S2SV_blank>%s\" , logical -> ob_type -> tp_name ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> kw ) { PyUnicodeObject <S2SV_ModEnd> * logical = <S2SV_ModStart> base = FRIBIDI_TYPE_RTL <S2SV_ModEnd> ; int clean <S2SV_ModStart> , \"base_direction\" , <S2SV_ModEnd> \"clean\" , \"reordernsm\" <S2SV_ModStart> , kw , \"U|iii\" <S2SV_ModEnd> , kwargs , <S2SV_ModStart> base , & <S2SV_ModEnd> clean , & <S2SV_ModStart> reordernsm ) ) { <S2SV_ModStart> return NULL ; } <S2SV_ModStart> FRIBIDI_TYPE_ON ) ) { <S2SV_ModStart> base ) ; } return unicode_log2vis <S2SV_ModEnd> ( logical , <S2SV_ModStart> reordernsm ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0185\n\n```\nCWE-264 int fpm_unix_resolve_socket_premissions ( struct fpm_worker_pool_s * wp ) { struct fpm_worker_pool_config_s * c = wp -> config ; wp -> socket_uid = - 1 ; wp -> socket_gid = - 1 ; <S2SV_StartBug> wp -> socket_mode = 0666 ; <S2SV_EndBug> if ( ! c ) { return 0 ; } if ( c -> listen_owner && * c -> listen_owner ) { struct passwd * pwd ; pwd = getpwnam ( c -> listen_owner ) ; if ( ! pwd ) { zlog ( ZLOG_SYSERROR , \"[pool<S2SV_blank>%s]<S2SV_blank>cannot<S2SV_blank>get<S2SV_blank>uid<S2SV_blank>for<S2SV_blank>user<S2SV_blank>\\'%s\\'\" , wp -> config -> name , c -> listen_owner ) ; return - 1 ; } wp -> socket_uid = pwd -> pw_uid ; wp -> socket_gid = pwd -> pw_gid ; } if ( c -> listen_group && * c -> listen_group ) { struct group * grp ; grp = getgrnam ( c -> listen_group ) ; if ( ! grp ) { zlog ( ZLOG_SYSERROR , \"[pool<S2SV_blank>%s]<S2SV_blank>cannot<S2SV_blank>get<S2SV_blank>gid<S2SV_blank>for<S2SV_blank>group<S2SV_blank>\\'%s\\'\" , wp -> config -> name , c -> listen_group ) ; return - 1 ; } wp -> socket_gid = grp -> gr_gid ; } if ( c -> listen_mode && * c -> listen_mode ) { wp -> socket_mode = strtoul ( c -> listen_mode , 0 , 8 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> socket_mode = 0660 <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0551\n\n```\nCWE-000 WORD32 ih264d_parse_decode_slice ( UWORD8 u1_is_idr_slice , UWORD8 u1_nal_ref_idc , dec_struct_t * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; dec_pic_params_t * ps_pps ; dec_seq_params_t * ps_seq ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; pocstruct_t s_tmp_poc ; WORD32 i_delta_poc [ 2 ] ; WORD32 i4_poc = 0 ; UWORD16 u2_first_mb_in_slice , u2_frame_num ; UWORD8 u1_field_pic_flag , u1_redundant_pic_cnt = 0 , u1_slice_type ; UWORD32 u4_idr_pic_id = 0 ; UWORD8 u1_bottom_field_flag , u1_pic_order_cnt_type ; UWORD8 u1_nal_unit_type ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; WORD8 i1_is_end_of_poc ; WORD32 ret , end_of_frame ; WORD32 prev_slice_err , num_mb_skipped ; UWORD8 u1_mbaff ; pocstruct_t * ps_cur_poc ; UWORD32 u4_temp ; WORD32 i_temp ; UWORD32 u4_call_end_of_pic = 0 ; ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read_slc = 0 ; u2_first_mb_in_slice = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u2_first_mb_in_slice > ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) ) { return ERROR_CORRUPTED_SLICE ; } if ( ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) <= ps_dec -> u2_cur_mb_addr ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { return ERROR_CORRUPTED_SLICE ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>first_mb_in_slice\" , u2_first_mb_in_slice ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > 9 ) return ERROR_INV_SLC_TYPE_T ; u1_slice_type = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_type\" , ( u1_slice_type ) ) ; ps_dec -> u1_sl_typ_5_9 = 0 ; if ( u1_slice_type > 4 ) { u1_slice_type -= 5 ; ps_dec -> u1_sl_typ_5_9 = 1 ; } { UWORD32 skip ; if ( ( ps_dec -> i4_app_skip_mode == IVD_SKIP_PB ) || ( ps_dec -> i4_dec_skip_mode == IVD_SKIP_PB ) ) { UWORD32 u4_bit_stream_offset = 0 ; if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else if ( ( I_SLICE == u1_slice_type ) && ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else { skip = 1 ; } if ( ( 0 == u2_first_mb_in_slice ) && ( 1 == ps_dec -> u4_prev_nal_skipped ) ) { skip = 0 ; } if ( skip ) { ps_dec -> u4_prev_nal_skipped = 1 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_PB ; return 0 ; } else { if ( 1 == ps_dec -> u4_prev_nal_skipped ) { ps_dec -> u4_return_to_app = 1 ; return 0 ; } } } } u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp & MASK_ERR_PIC_SET_ID ) return ERROR_INV_SLICE_HDR_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_parameter_set_id\" , u4_temp ) ; ps_pps = & ps_dec -> ps_pps [ u4_temp ] ; if ( FALSE == ps_pps -> u1_is_valid ) { return ERROR_INV_SLICE_HDR_T ; } ps_seq = ps_pps -> ps_sps ; if ( ! ps_seq ) return ERROR_INV_SLICE_HDR_T ; if ( FALSE == ps_seq -> u1_is_valid ) return ERROR_INV_SLICE_HDR_T ; u2_frame_num = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_bits_in_frm_num ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>frame_num\" , u2_frame_num ) ; if ( ! ps_seq -> u1_frame_mbs_only_flag ) { u1_field_pic_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>field_pic_flag\" , u1_field_pic_flag ) ; u1_bottom_field_flag = 0 ; if ( u1_field_pic_flag ) { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan_fld ; u1_bottom_field_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>bottom_field_flag\" , u1_bottom_field_flag ) ; } else { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } } else { u1_field_pic_flag = 0 ; u1_bottom_field_flag = 0 ; ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } u1_nal_unit_type = SLICE_NAL ; if ( u1_is_idr_slice ) { if ( 0 == u1_field_pic_flag ) { ps_dec -> u1_top_bottom_decoded = TOP_FIELD_ONLY | BOT_FIELD_ONLY ; } u1_nal_unit_type = IDR_SLICE_NAL ; u4_idr_pic_id = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_idr_pic_id > 65535 ) return ERROR_INV_SLICE_HDR_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank><S2SV_blank>\" , u4_idr_pic_id ) ; } i_delta_poc [ 0 ] = i_delta_poc [ 1 ] = 0 ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; u1_pic_order_cnt_type = ps_seq -> u1_pic_order_cnt_type ; if ( u1_pic_order_cnt_type == 0 ) { i_temp = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_log2_max_pic_order_cnt_lsb_minus ) ; if ( i_temp < 0 || i_temp >= ps_seq -> i4_max_pic_order_cntLsb ) return ERROR_INV_SLICE_HDR_T ; s_tmp_poc . i4_pic_order_cnt_lsb = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_order_cnt_lsb\" , s_tmp_poc . i4_pic_order_cnt_lsb ) ; if ( ( ps_pps -> u1_pic_order_present_flag == 1 ) && ( ! u1_field_pic_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt_bottom = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt_bottom\" , s_tmp_poc . i4_delta_pic_order_cnt_bottom ) ; } } s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = 0 ; if ( u1_pic_order_cnt_type == 1 && ( ! ps_seq -> u1_delta_pic_order_always_zero_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[0]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] ) ; if ( ps_pps -> u1_pic_order_present_flag && ! u1_field_pic_flag ) { s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[1]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] ) ; } } if ( ps_pps -> u1_redundant_pic_cnt_present_flag ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_REDUNDANT_PIC_CNT ) return ERROR_INV_SLICE_HDR_T ; u1_redundant_pic_cnt = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>redundant_pic_cnt\" , u1_redundant_pic_cnt ) ; } <S2SV_StartBug> i1_is_end_of_poc = 0 ; <S2SV_EndBug> if ( ! ps_dec -> u1_first_slice_in_stream ) { i1_is_end_of_poc = ih264d_is_end_of_pic ( u2_frame_num , u1_nal_ref_idc , & s_tmp_poc , & ps_dec -> s_cur_pic_poc , ps_cur_slice , u1_pic_order_cnt_type , u1_nal_unit_type , u4_idr_pic_id , u1_field_pic_flag , u1_bottom_field_flag ) ; if ( ( ps_dec -> u4_first_slice_in_pic == 2 ) && ( i1_is_end_of_poc == 0 ) ) { ps_dec -> ps_dec_err_status -> u1_err_flag |= REJECT_CUR_PIC ; i1_is_end_of_poc = 1 ; } else { ps_dec -> ps_dec_err_status -> u1_err_flag &= MASK_REJECT_CUR_PIC ; <S2SV_StartBug> } <S2SV_EndBug> } u1_mbaff = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; prev_slice_err = 0 ; if ( i1_is_end_of_poc || ps_dec -> u1_first_slice_in_stream ) { if ( u2_frame_num != ps_dec -> u2_prv_frame_num && ps_dec -> u1_top_bottom_decoded != 0 && ps_dec -> u1_top_bottom_decoded != ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) ) { ps_dec -> u1_dangling_field = 1 ; if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; } else { prev_slice_err = 2 ; } if ( ps_dec -> u1_top_bottom_decoded == TOP_FIELD_ONLY ) ps_cur_slice -> u1_bottom_field_flag = 1 ; else ps_cur_slice -> u1_bottom_field_flag = 0 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & ps_dec -> s_cur_pic_poc ; u1_is_idr_slice = ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ; } else if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice > 0 ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; ps_cur_poc = & s_tmp_poc ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; ps_cur_slice -> u1_mbaff_frame_flag = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; } } else { if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; } else { prev_slice_err = 2 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; } ps_cur_poc = & s_tmp_poc ; } } else { if ( ( u2_first_mb_in_slice << u1_mbaff ) > ps_dec -> u2_total_mbs_coded ) { prev_slice_err = 2 ; num_mb_skipped = ( u2_first_mb_in_slice << u1_mbaff ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } else if ( ( u2_first_mb_in_slice << u1_mbaff ) < ps_dec -> u2_total_mbs_coded ) { return ERROR_CORRUPTED_SLICE ; } } if ( prev_slice_err ) { ret = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , u1_is_idr_slice , u2_frame_num , ps_cur_poc , prev_slice_err ) ; if ( ps_dec -> u1_dangling_field == 1 ) { ps_dec -> u1_second_field = 1 - ps_dec -> u1_second_field ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_dec -> u2_prv_frame_num = u2_frame_num ; ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_DANGLING_FIELD_IN_PIC ; } if ( prev_slice_err == 2 ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_IN_LAST_SLICE_OF_PIC ; } if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } if ( ret != OK ) return ret ; i1_is_end_of_poc = 0 ; } if ( ps_dec -> u4_first_slice_in_pic == 0 ) { ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } if ( ( ps_dec -> u1_separate_parse == 0 ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { ps_dec -> ps_decode_cur_slice ++ ; } ps_dec -> u1_slice_header_done = 0 ; if ( ! ps_dec -> u1_first_slice_in_stream ) { UWORD8 uc_mbs_exceed = 0 ; if ( ps_dec -> u2_total_mbs_coded == ( ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ) ) { if ( ps_dec -> u4_first_slice_in_pic == 0 ) uc_mbs_exceed = 1 ; } if ( i1_is_end_of_poc || uc_mbs_exceed ) { if ( 1 == ps_dec -> u1_last_pic_not_decoded ) { ret = ih264d_end_of_pic_dispbuf_mgr ( ps_dec ) ; if ( ret != OK ) return ret ; ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; # if WIN32 H264_DEC_DEBUG_PRINT ( \"<S2SV_blank>------<S2SV_blank>PIC<S2SV_blank>SKIPPED<S2SV_blank>------\\\\n\" ) ; # endif return RET_LAST_SKIP ; } else { ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; } } } if ( u1_field_pic_flag ) { ps_dec -> u2_prv_frame_num = u2_frame_num ; } if ( ps_cur_slice -> u1_mmco_equalto5 ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; if ( ! ps_cur_slice -> u1_field_pic_flag ) { i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; } else if ( ! ps_cur_slice -> u1_bottom_field_flag ) i4_temp_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; else i4_temp_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_poc = i4_temp_poc ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { ret = ih264d_decode_pic_order_cnt ( u1_is_idr_slice , u2_frame_num , & ps_dec -> s_prev_pic_poc , & s_tmp_poc , ps_cur_slice , ps_pps , u1_nal_ref_idc , u1_bottom_field_flag , u1_field_pic_flag , & i4_poc ) ; if ( ret != OK ) return ret ; if ( i4_poc >= ps_dec -> i4_max_poc ) ps_dec -> i4_max_poc = i4_poc ; if ( i4_poc == 0 ) { ps_dec -> i4_prev_max_display_seq = ps_dec -> i4_prev_max_display_seq + ps_dec -> i4_max_poc + ps_dec -> u1_max_dec_frame_buffering + 1 ; ps_dec -> i4_max_poc = 0 ; } } ps_cur_slice -> i4_delta_pic_order_cnt [ 0 ] = i_delta_poc [ 0 ] ; ps_cur_slice -> i4_delta_pic_order_cnt [ 1 ] = i_delta_poc [ 1 ] ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u2_first_mb_in_slice = u2_first_mb_in_slice ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> u1_slice_type = u1_slice_type ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; if ( ps_seq -> u1_frame_mbs_only_flag ) ps_cur_slice -> u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; else ps_cur_slice -> u1_direct_8x8_inference_flag = 1 ; if ( u1_slice_type == B_SLICE ) { ps_cur_slice -> u1_direct_spatial_mv_pred_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>direct_spatial_mv_pred_flag\" , ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ; if ( ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ps_cur_slice -> pf_decodeDirect = ih264d_decode_spatial_direct ; else ps_cur_slice -> pf_decodeDirect = ih264d_decode_temporal_direct ; if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaffB ; } else { if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice == 0 ) { ret = ih264d_start_of_pic ( ps_dec , i4_poc , & s_tmp_poc , u2_frame_num , ps_pps ) ; if ( ret != OK ) return ret ; } ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } { UWORD8 uc_nofield_nombaff ; uc_nofield_nombaff = ( ( ps_dec -> ps_cur_slice -> u1_field_pic_flag == 0 ) && ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag == 0 ) && ( u1_slice_type != B_SLICE ) && ( ps_dec -> ps_cur_pps -> u1_wted_pred_flag == 0 ) ) ; if ( uc_nofield_nombaff ) { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; } else { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_mp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_mp ; } } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u4_frm_sei_sync == u2_frame_num ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; ps_err -> u4_frm_sei_sync = SYNC_FRM_DEFAULT ; } ps_err -> u4_cur_frm = u2_frame_num ; } { WORD32 i4_skip_b_pic , i4_skip_p_pic ; i4_skip_b_pic = ( ps_dec -> u4_skip_frm_mask & B_SLC_BIT ) && ( B_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; i4_skip_p_pic = ( ps_dec -> u4_skip_frm_mask & P_SLC_BIT ) && ( P_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; if ( i4_skip_b_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } if ( i4_skip_p_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } } { UWORD16 u2_mb_x , u2_mb_y ; ps_dec -> i4_submb_ofst = ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) * SUB_BLK_SIZE ) - SUB_BLK_SIZE ; if ( u2_first_mb_in_slice ) { UWORD8 u1_mb_aff ; UWORD8 u1_field_pic ; UWORD16 u2_frm_wd_in_mbs ; u2_frm_wd_in_mbs = ps_seq -> u2_frm_wd_in_mbs ; u1_mb_aff = ps_cur_slice -> u1_mbaff_frame_flag ; u1_field_pic = ps_cur_slice -> u1_field_pic_flag ; { UWORD32 x_offset ; UWORD32 y_offset ; UWORD32 u4_frame_stride ; tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = MOD ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y = DIV ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y <<= u1_mb_aff ; if ( ( u2_mb_x > u2_frm_wd_in_mbs - 1 ) || ( u2_mb_y > ps_dec -> u2_frm_ht_in_mbs - 1 ) ) { return ERROR_CORRUPTED_SLICE ; } u4_frame_stride = ps_dec -> u2_frm_wd_y << u1_field_pic ; x_offset = u2_mb_x << 4 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 4 ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 + x_offset + y_offset ; u4_frame_stride = ps_dec -> u2_frm_wd_uv << u1_field_pic ; x_offset >>= 1 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 3 ; x_offset *= YUV420SP_FACTOR ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 + x_offset + y_offset ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 + x_offset + y_offset ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; if ( ps_dec -> u1_separate_parse == 1 ) { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } else { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } ps_dec -> u2_cur_mb_addr = ( u2_first_mb_in_slice << u1_mb_aff ) ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv + ( ( u2_first_mb_in_slice << u1_mb_aff ) << 4 ) ; } } else { tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = 0xffff ; u2_mb_y = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; } ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= ps_cur_slice -> u1_mbaff_frame_flag ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; } ps_bitstrm -> u4_max_ofst += ps_dec -> ps_cur_pps -> u1_entropy_coding_mode ; ps_dec -> u1_B = ( u1_slice_type == B_SLICE ) ; ps_dec -> u4_next_mb_skip = 0 ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> ps_cur_slice -> u2_first_mb_in_slice ; ps_dec -> ps_parse_cur_slice -> slice_type = ps_dec -> ps_cur_slice -> u1_slice_type ; ps_dec -> u4_start_recon_deblk = 1 ; { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( void * ) pu1_buf ; } if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } if ( u1_slice_type == I_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= I_SLC_BIT ; ret = ih264d_parse_islice ( ps_dec , u2_first_mb_in_slice ) ; if ( ps_dec -> i4_pic_type != B_SLICE && ps_dec -> i4_pic_type != P_SLICE ) ps_dec -> i4_pic_type = I_SLICE ; } else if ( u1_slice_type == P_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ret = ih264d_parse_pslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; if ( ps_dec -> i4_pic_type != B_SLICE ) ps_dec -> i4_pic_type = P_SLICE ; } else if ( u1_slice_type == B_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ret = ih264d_parse_bslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; ps_dec -> i4_pic_type = B_SLICE ; } else return ERROR_INV_SLC_TYPE_T ; if ( ps_dec -> u1_slice_header_done ) { ps_dec -> u4_first_slice_in_pic = 0 ; ps_dec -> u1_first_slice_in_stream = 0 ; } if ( ret != OK ) return ret ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ( ps_seq -> u2_max_mb_addr + 1 ) ) { ps_dec -> u1_pic_decode_done = 1 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ( ps_err -> u1_err_flag & REJECT_PB_PICS ) && ( ps_err -> u1_cur_pic_type == PIC_TYPE_I ) ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } PRINT_BIN_BIT_RATIO ( ps_dec ) return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } i1_is_end_of_poc = 1 ; <S2SV_ModEnd> ps_dec -> ps_dec_err_status <S2SV_ModStart> &= MASK_REJECT_CUR_PIC ; if ( ps_dec -> u4_first_slice_in_pic != 2 ) { i1_is_end_of_poc = ih264d_is_end_of_pic ( u2_frame_num , u1_nal_ref_idc , & s_tmp_poc , & ps_dec -> s_cur_pic_poc , ps_cur_slice , u1_pic_order_cnt_type , u1_nal_unit_type , u4_idr_pic_id , u1_field_pic_flag , u1_bottom_field_flag ) ; <S2SV_ModEnd> } u1_mbaff =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0555\n\n```\nCWE-200 WORD32 ih264d_start_of_pic ( dec_struct_t * ps_dec , WORD32 i4_poc , pocstruct_t * ps_temp_poc , UWORD16 u2_frame_num , dec_pic_params_t * ps_pps ) { pocstruct_t * ps_prev_poc = & ps_dec -> s_cur_pic_poc ; pocstruct_t * ps_cur_poc = ps_temp_poc ; pic_buffer_t * pic_buf ; ivd_video_decode_op_t * ps_dec_output = ( ivd_video_decode_op_t * ) ps_dec -> pv_dec_out ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; dec_seq_params_t * ps_seq = ps_pps -> ps_sps ; UWORD8 u1_bottom_field_flag = ps_cur_slice -> u1_bottom_field_flag ; UWORD8 u1_field_pic_flag = ps_cur_slice -> u1_field_pic_flag ; high_profile_tools_t s_high_profile ; WORD32 ret ; H264_MUTEX_LOCK ( & ps_dec -> process_disp_mutex ) ; ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] ; ps_prev_poc -> u1_bot_field = ps_dec -> ps_cur_slice -> u1_bottom_field_flag ; ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst ; ps_prev_poc -> u2_frame_num = u2_frame_num ; ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> i1_next_ctxt_idx = 0 ; ps_dec -> u4_nmb_deblk = 0 ; if ( ps_dec -> u4_num_cores == 1 ) ps_dec -> u4_nmb_deblk = 1 ; if ( ps_seq -> u1_mb_aff_flag == 1 ) { ps_dec -> u4_nmb_deblk = 0 ; if ( ps_dec -> u4_num_cores > 2 ) ps_dec -> u4_num_cores = 2 ; } ps_dec -> u4_use_intrapred_line_copy = 0 ; if ( ps_seq -> u1_mb_aff_flag == 0 ) { ps_dec -> u4_use_intrapred_line_copy = 1 ; } ps_dec -> u4_app_disable_deblk_frm = 0 ; if ( ps_dec -> i4_degrade_type && ps_dec -> i4_degrade_pics ) { WORD32 degrade_pic ; ps_dec -> i4_degrade_pic_cnt ++ ; degrade_pic = 0 ; switch ( ps_dec -> i4_degrade_pics ) { case 4 : { degrade_pic = 1 ; break ; } case 3 : { if ( ps_cur_slice -> u1_slice_type != I_SLICE ) degrade_pic = 1 ; break ; } case 2 : { if ( ( ps_cur_slice -> u1_slice_type != I_SLICE ) && ( ps_dec -> i4_degrade_pic_cnt != ps_dec -> i4_nondegrade_interval ) ) degrade_pic = 1 ; break ; } case 1 : { if ( 0 == ps_cur_slice -> u1_nal_ref_idc ) { degrade_pic = 1 ; } break ; } } if ( degrade_pic ) { if ( ps_dec -> i4_degrade_type & 0x2 ) ps_dec -> u4_app_disable_deblk_frm = 1 ; if ( 0 == ps_cur_slice -> u1_nal_ref_idc ) { if ( ps_dec -> i4_degrade_type & 0x4 ) ps_dec -> i4_mv_frac_mask = 0 ; if ( ps_dec -> i4_degrade_type & 0x8 ) ps_dec -> i4_mv_frac_mask = 0 ; } } else ps_dec -> i4_degrade_pic_cnt = 0 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_dec -> u1_sl_typ_5_9 && ( ( ps_cur_slice -> u1_slice_type == I_SLICE ) || ( ps_cur_slice -> u1_slice_type == SI_SLICE ) ) ) ps_err -> u1_cur_pic_type = PIC_TYPE_I ; else ps_err -> u1_cur_pic_type = PIC_TYPE_UNKNOWN ; if ( ps_err -> u1_pic_aud_i == PIC_TYPE_I ) { ps_err -> u1_cur_pic_type = PIC_TYPE_I ; ps_err -> u1_pic_aud_i = PIC_TYPE_UNKNOWN ; } if ( ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { if ( ps_err -> u1_err_flag ) ih264d_reset_ref_bufs ( ps_dec -> ps_dpb_mgr ) ; ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } if ( ps_dec -> u1_init_dec_flag && ps_dec -> s_prev_seq_params . u1_eoseq_pending ) { WORD32 j ; for ( j = 0 ; j < MAX_DISP_BUFS_NEW ; j ++ ) { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , ps_dec -> au1_pic_buf_id_mv_buf_id_map [ j ] , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_IO ) ; } ps_dec -> u1_second_field = 0 ; ps_dec -> i4_cur_display_seq = 0 ; ps_dec -> s_prev_seq_params . u1_eoseq_pending = 0 ; } ret = ih264d_init_pic ( ps_dec , u2_frame_num , i4_poc , ps_pps ) ; if ( ret != OK ) return ret ; ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_pic_tu_coeff_data ; ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_pic_tu_coeff_data ; ps_dec -> ps_nmb_info = ps_dec -> ps_frm_mb_info ; if ( ps_dec -> u1_separate_parse ) { UWORD16 pic_wd = ps_dec -> u4_width_at_init ; UWORD16 pic_ht = ps_dec -> u4_height_at_init ; UWORD32 num_mbs ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { pic_wd = ps_dec -> u2_pic_wd ; pic_ht = ps_dec -> u2_pic_ht ; } num_mbs = ( pic_wd * pic_ht ) >> 8 ; if ( ps_dec -> pu1_dec_mb_map ) { memset ( ( void * ) ps_dec -> pu1_dec_mb_map , 0 , num_mbs ) ; } if ( ps_dec -> pu1_recon_mb_map ) { memset ( ( void * ) ps_dec -> pu1_recon_mb_map , 0 , num_mbs ) ; } if ( ps_dec -> pu2_slice_num_map ) { memset ( ( void * ) ps_dec -> pu2_slice_num_map , 0 , ( num_mbs * sizeof ( UWORD16 ) ) ) ; } } ps_dec -> ps_parse_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; ps_dec -> ps_decode_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; ps_dec -> ps_computebs_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> s_high_profile . u1_scaling_present = 0 ; ps_dec -> s_high_profile . u1_transform8x8_present = 0 ; if ( 1 == ps_dec -> u4_share_disp_buf ) { UWORD32 i ; for ( i = 0 ; i < MAX_DISP_BUFS_NEW ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) continue ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , i , BUF_MGR_IO ) ; ps_dec -> u4_disp_buf_to_be_freed [ i ] = 0 ; ps_dec -> u4_disp_buf_mapping [ i ] = 0 ; } } if ( ! ( u1_field_pic_flag && 0 != ps_dec -> u1_top_bottom_decoded ) ) { pic_buffer_t * ps_cur_pic ; WORD32 cur_pic_buf_id , cur_mv_buf_id ; col_mv_buf_t * ps_col_mv ; while ( 1 ) { ps_cur_pic = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & cur_pic_buf_id ) ; if ( ps_cur_pic == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_PICBUF_T ; return ERROR_UNAVAIL_PICBUF_T ; } if ( 0 == ps_dec -> u4_disp_buf_mapping [ cur_pic_buf_id ] ) { break ; } } ps_col_mv = ( col_mv_buf_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , & cur_mv_buf_id ) ; if ( ps_col_mv == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_MVBUF_T ; return ERROR_UNAVAIL_MVBUF_T ; } ps_dec -> ps_cur_pic = ps_cur_pic ; ps_dec -> u1_pic_buf_id = cur_pic_buf_id ; ps_cur_pic -> u4_ts = ps_dec -> u4_ts ; ps_cur_pic -> u1_mv_buf_id = cur_mv_buf_id ; ps_dec -> au1_pic_buf_id_mv_buf_id_map [ cur_pic_buf_id ] = cur_mv_buf_id ; ps_cur_pic -> pu1_col_zero_flag = ( UWORD8 * ) ps_col_mv -> pv_col_zero_flag ; ps_cur_pic -> ps_mv = ( mv_pred_t * ) ps_col_mv -> pv_mv ; ps_dec -> au1_pic_buf_ref_flag [ cur_pic_buf_id ] = 0 ; { ps_dec -> ps_ref_pic_buf_lx [ 0 ] = ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] ; * ( ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] [ 0 ] ) = * ps_cur_pic ; * ( ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] [ MAX_REF_BUFS ] ) = * ps_cur_pic ; } if ( ! ps_dec -> ps_cur_pic ) { WORD32 j ; H264_DEC_DEBUG_PRINT ( \"-------<S2SV_blank>Display<S2SV_blank>Buffers<S2SV_blank>Reset<S2SV_blank>--------\\\\n\" ) ; for ( j = 0 ; j < MAX_DISP_BUFS_NEW ; j ++ ) { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , ps_dec -> au1_pic_buf_id_mv_buf_id_map [ j ] , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_IO ) ; } ps_dec -> i4_cur_display_seq = 0 ; ps_dec -> i4_prev_max_display_seq = 0 ; ps_dec -> i4_max_poc = 0 ; ps_cur_pic = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & cur_pic_buf_id ) ; if ( ps_cur_pic == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_PICBUF_T ; return ERROR_UNAVAIL_PICBUF_T ; } ps_col_mv = ( col_mv_buf_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , & cur_mv_buf_id ) ; if ( ps_col_mv == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_MVBUF_T ; return ERROR_UNAVAIL_MVBUF_T ; } ps_dec -> ps_cur_pic = ps_cur_pic ; ps_dec -> u1_pic_buf_id = cur_pic_buf_id ; ps_cur_pic -> u4_ts = ps_dec -> u4_ts ; ps_dec -> apv_buf_id_pic_buf_map [ cur_pic_buf_id ] = ( void * ) ps_cur_pic ; ps_cur_pic -> u1_mv_buf_id = cur_mv_buf_id ; ps_dec -> au1_pic_buf_id_mv_buf_id_map [ cur_pic_buf_id ] = cur_mv_buf_id ; ps_cur_pic -> pu1_col_zero_flag = ( UWORD8 * ) ps_col_mv -> pv_col_zero_flag ; ps_cur_pic -> ps_mv = ( mv_pred_t * ) ps_col_mv -> pv_mv ; ps_dec -> au1_pic_buf_ref_flag [ cur_pic_buf_id ] = 0 ; } ps_dec -> ps_cur_pic -> u1_picturetype = u1_field_pic_flag ; ps_dec -> ps_cur_pic -> u4_pack_slc_typ = SKIP_NONE ; H264_DEC_DEBUG_PRINT ( \"got<S2SV_blank>a<S2SV_blank>buffer\\\\n\" ) ; } else { H264_DEC_DEBUG_PRINT ( \"did<S2SV_blank>not<S2SV_blank>get<S2SV_blank>a<S2SV_blank>buffer\\\\n\" ) ; } ps_dec -> u4_pic_buf_got = 1 ; ps_dec -> ps_cur_pic -> i4_poc = i4_poc ; ps_dec -> ps_cur_pic -> i4_frame_num = u2_frame_num ; ps_dec -> ps_cur_pic -> i4_pic_num = u2_frame_num ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = ps_pps -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = ps_pps -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_avg_poc = ps_pps -> i4_avg_poc ; ps_dec -> ps_cur_pic -> u4_time_stamp = ps_dec -> u4_pts ; ps_dec -> s_cur_pic = * ( ps_dec -> ps_cur_pic ) ; if ( u1_field_pic_flag && u1_bottom_field_flag ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; ps_dec -> s_cur_pic . pu1_buf1 += ps_dec -> s_cur_pic . u2_frm_wd_y ; ps_dec -> s_cur_pic . pu1_buf2 += ps_dec -> s_cur_pic . u2_frm_wd_uv ; ps_dec -> s_cur_pic . pu1_buf3 += ps_dec -> s_cur_pic . u2_frm_wd_uv ; ps_dec -> s_cur_pic . ps_mv += ( ( ps_dec -> u2_pic_ht * ps_dec -> u2_pic_wd ) >> 5 ) ; ps_dec -> s_cur_pic . pu1_col_zero_flag += ( ( ps_dec -> u2_pic_ht * ps_dec -> u2_pic_wd ) >> 5 ) ; ps_dec -> ps_cur_pic -> u1_picturetype |= BOT_FLD ; i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } ps_cur_slice -> u1_mbaff_frame_flag = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; ps_dec -> ps_cur_pic -> u1_picturetype |= ( ps_cur_slice -> u1_mbaff_frame_flag << 2 ) ; ps_dec -> ps_cur_mb_row = ps_dec -> ps_nbr_mb_row ; ps_dec -> ps_cur_mb_row ++ ; ps_dec -> ps_top_mb_row = ps_dec -> ps_nbr_mb_row + ( ( ps_dec -> u2_frm_wd_in_mbs + 1 ) << ( 1 - ps_dec -> ps_cur_sps -> u1_frame_mbs_only_flag ) ) ; ps_dec -> ps_top_mb_row ++ ; ps_dec -> pu1_y = ps_dec -> pu1_y_scratch [ 0 ] ; ps_dec -> pu1_u = ps_dec -> pu1_u_scratch [ 0 ] ; ps_dec -> pu1_v = ps_dec -> pu1_v_scratch [ 0 ] ; ps_dec -> u1_yuv_scratch_idx = 0 ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> ps_mv_top = ps_dec -> ps_mv_top_p [ 0 ] ; ps_dec -> u1_mv_top_p = 0 ; ps_dec -> u1_mb_idx = 0 ; ps_dec -> ps_mv_left = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> pu1_yleft = 0 ; ps_dec -> pu1_uleft = 0 ; ps_dec -> pu1_vleft = 0 ; ps_dec -> u1_not_wait_rec = 2 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> i4_submb_ofst = - ( SUB_BLK_SIZE ) ; ps_dec -> u4_pred_info_idx = 0 ; ps_dec -> u4_pred_info_pkd_idx = 0 ; ps_dec -> u4_dma_buf_idx = 0 ; ps_dec -> ps_mv = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> ps_mv_bank_cur = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> pu1_col_zero_flag = ps_dec -> s_cur_pic . pu1_col_zero_flag ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> i2_prev_slice_mbx = - 1 ; ps_dec -> i2_prev_slice_mby = 0 ; ps_dec -> u2_mv_2mb [ 0 ] = 0 ; ps_dec -> u2_mv_2mb [ 1 ] = 0 ; ps_dec -> u1_last_pic_not_decoded = 0 ; ps_dec -> u2_cur_slice_num_dec_thread = 0 ; ps_dec -> u2_cur_slice_num_bs = 0 ; ps_dec -> u4_intra_pred_line_ofst = 0 ; ps_dec -> pu1_cur_y_intra_pred_line = ps_dec -> pu1_y_intra_pred_line ; ps_dec -> pu1_cur_u_intra_pred_line = ps_dec -> pu1_u_intra_pred_line ; ps_dec -> pu1_cur_v_intra_pred_line = ps_dec -> pu1_v_intra_pred_line ; ps_dec -> pu1_cur_y_intra_pred_line_base = ps_dec -> pu1_y_intra_pred_line ; ps_dec -> pu1_cur_u_intra_pred_line_base = ps_dec -> pu1_u_intra_pred_line ; ps_dec -> pu1_cur_v_intra_pred_line_base = ps_dec -> pu1_v_intra_pred_line ; ps_dec -> pu1_prev_y_intra_pred_line = ps_dec -> pu1_y_intra_pred_line + ( ps_dec -> u2_frm_wd_in_mbs * MB_SIZE ) ; ps_dec -> pu1_prev_u_intra_pred_line = ps_dec -> pu1_u_intra_pred_line + ps_dec -> u2_frm_wd_in_mbs * BLK8x8SIZE * YUV420SP_FACTOR ; ps_dec -> pu1_prev_v_intra_pred_line = ps_dec -> pu1_v_intra_pred_line + ps_dec -> u2_frm_wd_in_mbs * BLK8x8SIZE ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; ps_dec -> ps_deblk_mbn_curr = ps_dec -> ps_deblk_mbn ; ps_dec -> ps_deblk_mbn_prev = ps_dec -> ps_deblk_mbn + ps_dec -> u1_recon_mb_grp ; { if ( ps_cur_slice -> u1_mbaff_frame_flag ) { ps_dec -> pf_compute_bs = ih264d_compute_bs_mbaff ; ps_dec -> pf_mvpred = ih264d_mvpred_mbaff ; } else { ps_dec -> pf_compute_bs = ih264d_compute_bs_non_mbaff ; ps_dec -> u1_cur_mb_fld_dec_flag = ps_cur_slice -> u1_field_pic_flag ; } } { UWORD8 u1_field_pic_flag = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; UWORD8 u1_mbaff = ps_cur_slice -> u1_mbaff_frame_flag ; UWORD8 uc_lastmbs = ( ( ( ps_dec -> u2_pic_wd ) >> 4 ) % ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) ) ; UWORD16 ui16_lastmbs_widthY = ( uc_lastmbs ? ( uc_lastmbs << 4 ) : ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) << 4 ) ) ; UWORD16 ui16_lastmbs_widthUV = uc_lastmbs ? ( uc_lastmbs << 3 ) : ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) << 3 ) ; ps_dec -> s_tran_addrecon . pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_dec -> s_tran_addrecon . pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_dec -> s_tran_addrecon . pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_dec -> s_tran_addrecon . u2_frm_wd_y = ps_dec -> u2_frm_wd_y << u1_field_pic_flag ; ps_dec -> s_tran_addrecon . u2_frm_wd_uv = ps_dec -> u2_frm_wd_uv << u1_field_pic_flag ; if ( u1_field_pic_flag ) { ui16_lastmbs_widthY += ps_dec -> u2_frm_wd_y ; ui16_lastmbs_widthUV += ps_dec -> u2_frm_wd_uv ; } ps_dec -> s_tran_addrecon . u4_inc_y [ 0 ] = ( ( ps_dec -> u1_recon_mb_grp << 4 ) >> u1_mbaff ) ; ps_dec -> s_tran_addrecon . u4_inc_uv [ 0 ] = ( ( ps_dec -> u1_recon_mb_grp << 4 ) >> u1_mbaff ) ; ps_dec -> s_tran_addrecon . u4_inc_y [ 1 ] = ( ui16_lastmbs_widthY + ( PAD_LEN_Y_H << 1 ) + ps_dec -> s_tran_addrecon . u2_frm_wd_y * ( ( 15 << u1_mbaff ) + u1_mbaff ) ) ; ps_dec -> s_tran_addrecon . u4_inc_uv [ 1 ] = ( ui16_lastmbs_widthUV + ( PAD_LEN_UV_H << 2 ) + ps_dec -> s_tran_addrecon . u2_frm_wd_uv * ( ( 15 << u1_mbaff ) + u1_mbaff ) ) ; ih264d_assign_pic_num ( ps_dec ) ; ps_dec -> s_tran_addrecon . u2_mv_top_left_inc = ( ps_dec -> u1_recon_mb_grp << 2 ) - 1 - ( u1_mbaff << 2 ) ; ps_dec -> s_tran_addrecon . u2_mv_left_inc = ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) - 1 ) << ( 4 + u1_mbaff ) ; } if ( ps_seq -> u1_profile_idc == HIGH_PROFILE_IDC ) { if ( ( ps_seq -> i4_seq_scaling_matrix_present_flag ) || ( ps_pps -> i4_pic_scaling_matrix_present_flag ) ) { ih264d_form_scaling_matrix_picture ( ps_seq , ps_pps , ps_dec ) ; ps_dec -> s_high_profile . u1_scaling_present = 1 ; } else { ih264d_form_default_scaling_matrix ( ps_dec ) ; } if ( ps_pps -> i4_transform_8x8_mode_flag ) { ps_dec -> s_high_profile . u1_transform8x8_present = 1 ; } } else { ih264d_form_default_scaling_matrix ( ps_dec ) ; } ps_dec -> s_high_profile . u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; ps_dec -> s_high_profile . s_cavlc_ctxt = ps_dec -> s_cavlc_ctxt ; ps_dec -> i1_recon_in_thread3_flag = 1 ; ps_dec -> ps_frame_buf_ip_recon = & ps_dec -> s_tran_addrecon ; if ( ps_dec -> u1_separate_parse ) { memcpy ( & ps_dec -> s_tran_addrecon_parse , & ps_dec -> s_tran_addrecon , sizeof ( tfr_ctxt_t ) ) ; if ( ps_dec -> u4_num_cores >= 3 && ps_dec -> i1_recon_in_thread3_flag ) { memcpy ( & ps_dec -> s_tran_iprecon , & ps_dec -> s_tran_addrecon , sizeof ( tfr_ctxt_t ) ) ; ps_dec -> ps_frame_buf_ip_recon = & ps_dec -> s_tran_iprecon ; } } ih264d_init_deblk_tfr_ctxt ( ps_dec , & ( ps_dec -> s_pad_mgr ) , & ( ps_dec -> s_tran_addrecon ) , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; ps_dec -> ps_cur_deblk_mb = ps_dec -> ps_deblk_pic ; ps_dec -> u4_cur_deblk_mb_num = 0 ; ps_dec -> u4_deblk_mb_x = 0 ; ps_dec -> u4_deblk_mb_y = 0 ; ps_dec -> pu4_wt_ofsts = ps_dec -> pu4_wts_ofsts_mat ; <S2SV_StartBug> H264_MUTEX_UNLOCK ( & ps_dec -> process_disp_mutex ) ; <S2SV_EndBug> return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pu4_wts_ofsts_mat ; ps_dec -> u4_first_slice_in_pic = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14283\n\n```\nCWE-125 static int set_geometry ( unsigned int cmd , struct floppy_struct * g , int drive , int type , struct block_device * bdev ) { int cnt ; <S2SV_StartBug> if ( g -> sect <= 0 || <S2SV_EndBug> <S2SV_StartBug> g -> head <= 0 || <S2SV_EndBug> ( unsigned char ) ( ( g -> sect << 2 ) >> FD_SIZECODE ( g ) ) == 0 || g -> track <= 0 || g -> track > UDP -> tracks >> STRETCH ( g ) || ( g -> stretch & ~ ( FD_STRETCH | FD_SWAPSIDES | FD_SECTBASEMASK ) ) != 0 ) return - EINVAL ; if ( type ) { if ( ! capable ( CAP_SYS_ADMIN ) ) return - EPERM ; mutex_lock ( & open_lock ) ; if ( lock_fdc ( drive ) ) { mutex_unlock ( & open_lock ) ; return - EINTR ; } floppy_type [ type ] = * g ; floppy_type [ type ] . name = \"user<S2SV_blank>format\" ; for ( cnt = type << 2 ; cnt < ( type << 2 ) + 4 ; cnt ++ ) floppy_sizes [ cnt ] = floppy_sizes [ cnt + 0x80 ] = floppy_type [ type ] . size + 1 ; process_fd_request ( ) ; for ( cnt = 0 ; cnt < N_DRIVE ; cnt ++ ) { struct block_device * bdev = opened_bdev [ cnt ] ; if ( ! bdev || ITYPE ( drive_state [ cnt ] . fd_device ) != type ) continue ; __invalidate_device ( bdev , true ) ; } mutex_unlock ( & open_lock ) ; } else { int oldStretch ; if ( lock_fdc ( drive ) ) return - EINTR ; if ( cmd != FDDEFPRM ) { if ( poll_drive ( true , FD_RAW_NEED_DISK ) == - EINTR ) return - EINTR ; } oldStretch = g -> stretch ; user_params [ drive ] = * g ; if ( buffer_drive == drive ) SUPBOUND ( buffer_max , user_params [ drive ] . sect ) ; current_type [ drive ] = & user_params [ drive ] ; floppy_sizes [ drive ] = user_params [ drive ] . size ; if ( cmd == FDDEFPRM ) DRS -> keep_data = - 1 ; else DRS -> keep_data = 1 ; if ( DRS -> maxblock > user_params [ drive ] . sect || DRS -> maxtrack || ( ( user_params [ drive ] . sect ^ oldStretch ) & ( FD_SWAPSIDES | FD_SECTBASEMASK ) ) ) invalidate_drive ( bdev ) ; else process_fd_request ( ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( int ) <S2SV_ModStart> <= 0 || ( int ) <S2SV_ModStart> g -> head <= 0 || ( int ) ( g -> sect * g -> head )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3695\n\n```\nCWE-74 static int einj_error_inject ( u32 type , u32 flags , u64 param1 , u64 param2 , u64 param3 , u64 param4 ) { int rc ; <S2SV_StartBug> u64 base_addr , size ; <S2SV_EndBug> if ( flags && ( flags & ~ ( SETWA_FLAGS_APICID | SETWA_FLAGS_MEM | SETWA_FLAGS_PCIE_SBDF ) ) ) return - EINVAL ; if ( ! ( param_extension || acpi5 ) ) goto inject ; if ( type & ACPI5_VENDOR_BIT ) { if ( vendor_flags != SETWA_FLAGS_MEM ) goto inject ; } else if ( ! ( type & MEM_ERROR_MASK ) && ! ( flags & SETWA_FLAGS_MEM ) ) goto inject ; base_addr = param1 & param2 ; size = ~ param2 + 1 ; if ( ( ( param2 & PAGE_MASK ) != PAGE_MASK ) || ( ( region_intersects ( base_addr , size , IORESOURCE_SYSTEM_RAM , IORES_DESC_NONE ) != REGION_INTERSECTS ) && ( region_intersects ( base_addr , size , IORESOURCE_MEM , IORES_DESC_PERSISTENT_MEMORY ) != REGION_INTERSECTS ) ) ) return - EINVAL ; inject : mutex_lock ( & einj_mutex ) ; rc = __einj_error_inject ( type , flags , param1 , param2 , param3 , param4 ) ; mutex_unlock ( & einj_mutex ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base_addr , size ; if ( get_securelevel ( ) > 0 ) return - EPERM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1237\n\n```\nCWE-284 static __be32 nfsacld_proc_setacl ( struct svc_rqst * rqstp , struct nfsd3_setaclargs * argp , struct nfsd_attrstat * resp ) { struct inode * inode ; svc_fh * fh ; __be32 nfserr = 0 ; int error ; dprintk ( \"nfsd:<S2SV_blank>SETACL(2acl)<S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , SVCFH_fmt ( & argp -> fh ) ) ; fh = fh_copy ( & resp -> fh , & argp -> fh ) ; nfserr = fh_verify ( rqstp , & resp -> fh , 0 , NFSD_MAY_SATTR ) ; if ( nfserr ) goto out ; inode = d_inode ( fh -> fh_dentry ) ; <S2SV_StartBug> if ( ! IS_POSIXACL ( inode ) || ! inode -> i_op -> set_acl ) { <S2SV_EndBug> error = - EOPNOTSUPP ; goto out_errno ; <S2SV_StartBug> } <S2SV_EndBug> error = fh_want_write ( fh ) ; if ( error ) goto out_errno ; <S2SV_StartBug> error = inode -> i_op -> set_acl ( inode , argp -> acl_access , ACL_TYPE_ACCESS ) ; <S2SV_EndBug> if ( error ) goto out_drop_write ; <S2SV_StartBug> error = inode -> i_op -> set_acl ( inode , argp -> acl_default , <S2SV_EndBug> ACL_TYPE_DEFAULT ) ; if ( error ) goto out_drop_write ; fh_drop_write ( fh ) ; nfserr = fh_getattr ( fh , & resp -> stat ) ; out : posix_acl_release ( argp -> acl_access ) ; posix_acl_release ( argp -> acl_default ) ; return nfserr ; <S2SV_StartBug> out_drop_write : <S2SV_EndBug> fh_drop_write ( fh ) ; out_errno : nfserr = nfserrno ( error ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fh_dentry ) ; error = fh_want_write ( fh ) ; if ( error ) <S2SV_ModEnd> goto out_errno ; <S2SV_ModStart> goto out_errno ; fh_lock ( fh ) ; error = set_posix_acl ( inode , ACL_TYPE_ACCESS <S2SV_ModEnd> , argp -> <S2SV_ModStart> argp -> acl_access ) ; if ( error ) goto out_drop_lock ; error = set_posix_acl ( inode , ACL_TYPE_DEFAULT <S2SV_ModEnd> , argp -> <S2SV_ModStart> argp -> acl_default ) ; if ( error ) goto out_drop_lock ; fh_unlock ( fh ) <S2SV_ModEnd> ; fh_drop_write ( <S2SV_ModStart> return nfserr ; out_drop_lock : fh_unlock ( fh ) ; <S2SV_ModEnd> fh_drop_write ( fh\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 void bnep_net_setup ( struct net_device * dev ) { memset ( dev -> broadcast , 0xff , ETH_ALEN ) ; dev -> addr_len = ETH_ALEN ; ether_setup ( dev ) ; <S2SV_StartBug> dev -> netdev_ops = & bnep_netdev_ops ; <S2SV_EndBug> dev -> watchdog_timeo = HZ * 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20748\n\n```\nCWE-787 rfbBool rfbHandleAuthResult ( rfbClient * client ) { <S2SV_StartBug> uint32_t authResult = 0 , reasonLen = 0 ; <S2SV_EndBug> char * reason = NULL ; if ( ! ReadFromRFBServer ( client , ( char * ) & authResult , 4 ) ) return FALSE ; authResult = rfbClientSwap32IfLE ( authResult ) ; switch ( authResult ) { case rfbVncAuthOK : rfbClientLog ( \"VNC<S2SV_blank>authentication<S2SV_blank>succeeded\\\\n\" ) ; return TRUE ; break ; case rfbVncAuthFailed : if ( client -> major == 3 && client -> minor > 7 ) { <S2SV_StartBug> if ( ! ReadFromRFBServer ( client , ( char * ) & reasonLen , 4 ) ) return FALSE ; <S2SV_EndBug> reasonLen = rfbClientSwap32IfLE ( reasonLen ) ; reason = malloc ( ( uint64_t ) reasonLen + 1 ) ; if ( ! ReadFromRFBServer ( client , reason , reasonLen ) ) { free ( reason ) ; return FALSE ; } reason [ reasonLen ] = 0 ; rfbClientLog ( \"VNC<S2SV_blank>connection<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , reason ) ; free ( reason ) ; return FALSE ; } rfbClientLog ( \"VNC<S2SV_blank>authentication<S2SV_blank>failed\\\\n\" ) ; return FALSE ; case rfbVncAuthTooMany : rfbClientLog ( \"VNC<S2SV_blank>authentication<S2SV_blank>failed<S2SV_blank>-<S2SV_blank>too<S2SV_blank>many<S2SV_blank>tries\\\\n\" ) ; return FALSE ; } rfbClientLog ( \"Unknown<S2SV_blank>VNC<S2SV_blank>authentication<S2SV_blank>result:<S2SV_blank>%d\\\\n\" , ( int ) authResult ) ; return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> authResult = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> 7 ) { ReadReason ( client <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int pppoe_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t total_len , int flags ) { struct sock * sk = sock -> sk ; struct sk_buff * skb ; int error = 0 ; if ( sk -> sk_state & PPPOX_BOUND ) { error = - EIO ; goto end ; } skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & error ) ; if ( error < 0 ) goto end ; <S2SV_StartBug> m -> msg_namelen = 0 ; <S2SV_EndBug> if ( skb ) { total_len = min_t ( size_t , total_len , skb -> len ) ; error = skb_copy_datagram_iovec ( skb , 0 , m -> msg_iov , total_len ) ; if ( error == 0 ) { consume_skb ( skb ) ; return total_len ; } } kfree_skb ( skb ) ; end : return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto end ; <S2SV_ModEnd> if ( skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> cJSON * cJSON_CreateIntArray ( int64_t * numbers , int count ) <S2SV_EndBug> { int i ; cJSON * n = 0 , * p = 0 , * a = cJSON_CreateArray ( ) ; <S2SV_StartBug> for ( i = 0 ; a && i < count ; ++ i ) { <S2SV_EndBug> <S2SV_StartBug> n = cJSON_CreateInt ( numbers [ i ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! i ) <S2SV_EndBug> a -> child = n ; else suffix_object ( p , n ) ; p = n ; } return a ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cJSON_CreateIntArray ( const int <S2SV_ModEnd> * numbers , <S2SV_ModStart> < count ; i ++ <S2SV_ModEnd> ) { n <S2SV_ModStart> { n = cJSON_CreateNumber <S2SV_ModEnd> ( numbers [ <S2SV_ModStart> ] ) ; if ( ! n ) { cJSON_Delete ( a ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18200\n\n```\nCWE-20 static void f2fs_put_super ( struct super_block * sb ) { struct f2fs_sb_info * sbi = F2FS_SB ( sb ) ; int i ; f2fs_quota_off_umount ( sb ) ; mutex_lock ( & sbi -> umount_mutex ) ; if ( is_sbi_flag_set ( sbi , SBI_IS_DIRTY ) || ! is_set_ckpt_flags ( sbi , CP_UMOUNT_FLAG ) ) { struct cp_control cpc = { . reason = CP_UMOUNT , } ; write_checkpoint ( sbi , & cpc ) ; } <S2SV_StartBug> f2fs_wait_discard_bios ( sbi ) ; <S2SV_EndBug> if ( f2fs_discard_en ( sbi ) && ! sbi -> discard_blks ) { struct cp_control cpc = { . reason = CP_UMOUNT | CP_TRIMMED , } ; write_checkpoint ( sbi , & cpc ) ; } f2fs_destroy_stats ( sbi ) ; release_ino_entry ( sbi , true ) ; f2fs_leave_shrinker ( sbi ) ; mutex_unlock ( & sbi -> umount_mutex ) ; f2fs_flush_merged_writes ( sbi ) ; iput ( sbi -> node_inode ) ; iput ( sbi -> meta_inode ) ; destroy_node_manager ( sbi ) ; destroy_segment_manager ( sbi ) ; kfree ( sbi -> ckpt ) ; f2fs_unregister_sysfs ( sbi ) ; sb -> s_fs_info = NULL ; if ( sbi -> s_chksum_driver ) crypto_free_shash ( sbi -> s_chksum_driver ) ; kfree ( sbi -> raw_super ) ; destroy_device_list ( sbi ) ; mempool_destroy ( sbi -> write_io_dummy ) ; # ifdef CONFIG_QUOTA for ( i = 0 ; i < MAXQUOTAS ; i ++ ) kfree ( sbi -> s_qf_names [ i ] ) ; # endif destroy_percpu_info ( sbi ) ; for ( i = 0 ; i < NR_PAGE_TYPE ; i ++ ) kfree ( sbi -> write_io [ i ] ) ; kfree ( sbi ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> f2fs_wait_discard_bios ( sbi , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8787\n\n```\nCWE-190 static BOOL gdi_Bitmap_Decompress ( rdpContext * context , rdpBitmap * bitmap , const BYTE * pSrcData , UINT32 DstWidth , UINT32 DstHeight , UINT32 bpp , UINT32 length , BOOL compressed , UINT32 codecId ) { UINT32 SrcSize = length ; rdpGdi * gdi = context -> gdi ; <S2SV_StartBug> bitmap -> compressed = FALSE ; <S2SV_EndBug> bitmap -> format = gdi -> dstFormat ; <S2SV_StartBug> bitmap -> length = DstWidth * DstHeight * GetBytesPerPixel ( bitmap -> format ) ; <S2SV_EndBug> bitmap -> data = ( BYTE * ) _aligned_malloc ( bitmap -> length , 16 ) ; if ( ! bitmap -> data ) return FALSE ; if ( compressed ) { if ( bpp < 32 ) { if ( ! interleaved_decompress ( context -> codecs -> interleaved , pSrcData , SrcSize , DstWidth , DstHeight , bpp , bitmap -> data , bitmap -> format , 0 , 0 , 0 , DstWidth , DstHeight , & gdi -> palette ) ) return FALSE ; } else { if ( ! planar_decompress ( context -> codecs -> planar , pSrcData , SrcSize , DstWidth , DstHeight , bitmap -> data , bitmap -> format , 0 , 0 , 0 , DstWidth , DstHeight , TRUE ) ) return FALSE ; } } else { const UINT32 SrcFormat = gdi_get_pixel_format ( bpp ) ; const size_t sbpp = GetBytesPerPixel ( SrcFormat ) ; const size_t dbpp = GetBytesPerPixel ( bitmap -> format ) ; if ( ( sbpp == 0 ) || ( dbpp == 0 ) ) return FALSE ; else { const size_t dstSize = SrcSize * dbpp / sbpp ; if ( dstSize < bitmap -> length ) return FALSE ; } if ( ! freerdp_image_copy ( bitmap -> data , bitmap -> format , 0 , 0 , 0 , DstWidth , DstHeight , pSrcData , SrcFormat , 0 , 0 , 0 , & gdi -> palette , FREERDP_FLIP_VERTICAL ) ) return FALSE ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> gdi ; UINT32 size = DstWidth * DstHeight ; <S2SV_ModStart> -> dstFormat ; if ( ( GetBytesPerPixel ( bitmap -> format ) == 0 ) || ( DstWidth == 0 ) || ( DstHeight == 0 ) || ( DstWidth > UINT32_MAX / DstHeight ) || ( size > ( UINT32_MAX / GetBytesPerPixel ( bitmap -> format ) ) ) ) return FALSE ; size *= GetBytesPerPixel ( bitmap -> format ) ; <S2SV_ModStart> -> length = size <S2SV_ModEnd> ; bitmap ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1477\n\n```\nCWE-264 static void opl3_panning ( int dev , int voice , int value ) { <S2SV_StartBug> devc -> voc [ voice ] . panning = value ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) { if ( voice < 0 || voice >= devc -> nr_voice ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0178\n\n```\nCWE-20 void beforeSleep ( struct aeEventLoop * eventLoop ) { REDIS_NOTUSED ( eventLoop ) ; listNode * ln ; redisClient * c ; <S2SV_StartBug> if ( server . vm_enabled && listLength ( server . io_ready_clients ) ) { <S2SV_EndBug> listIter li ; listRewind ( server . io_ready_clients , & li ) ; while ( ( ln = listNext ( & li ) ) ) { c = ln -> value ; struct redisCommand * cmd ; listDelNode ( server . io_ready_clients , ln ) ; c -> flags &= ( ~ REDIS_IO_WAIT ) ; <S2SV_StartBug> server . vm_blocked_clients -- ; <S2SV_EndBug> aeCreateFileEvent ( server . el , c -> fd , AE_READABLE , readQueryFromClient , c ) ; cmd = lookupCommand ( c -> argv [ 0 ] -> ptr ) ; redisAssert ( cmd != NULL ) ; call ( c , cmd ) ; resetClient ( c ) ; if ( c -> querybuf && sdslen ( c -> querybuf ) > 0 ) processInputBuffer ( c ) ; } } while ( listLength ( server . unblocked_clients ) ) { ln = listFirst ( server . unblocked_clients ) ; redisAssert ( ln != NULL ) ; c = ln -> value ; listDelNode ( server . unblocked_clients , ln ) ; if ( c -> querybuf && sdslen ( c -> querybuf ) > 0 ) processInputBuffer ( c ) ; } flushAppendOnlyFile ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( server . ds_enabled <S2SV_ModEnd> && listLength ( <S2SV_ModStart> ; server . cache_blocked_clients <S2SV_ModEnd> -- ; aeCreateFileEvent\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 void handle_lddfmna ( struct pt_regs * regs , unsigned long sfar , unsigned long sfsr ) { unsigned long pc = regs -> tpc ; unsigned long tstate = regs -> tstate ; u32 insn ; u64 value ; u8 freg ; int flag ; struct fpustate * f = FPUSTATE ; if ( tstate & TSTATE_PRIV ) die_if_kernel ( \"lddfmna<S2SV_blank>from<S2SV_blank>kernel\" , regs ) ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 , 0 , regs , sfar ) ; <S2SV_EndBug> if ( test_thread_flag ( TIF_32BIT ) ) pc = ( u32 ) pc ; if ( get_user ( insn , ( u32 __user * ) pc ) != - EFAULT ) { int asi = decode_asi ( insn , regs ) ; u32 first , second ; int err ; if ( ( asi > ASI_SNFL ) || ( asi < ASI_P ) ) goto daex ; first = second = 0 ; err = get_user ( first , ( u32 __user * ) sfar ) ; if ( ! err ) err = get_user ( second , ( u32 __user * ) ( sfar + 4 ) ) ; if ( err ) { if ( ! ( asi & 0x2 ) ) goto daex ; first = second = 0 ; } save_and_clear_fpu ( ) ; freg = ( ( insn >> 25 ) & 0x1e ) | ( ( insn >> 20 ) & 0x20 ) ; value = ( ( ( u64 ) first ) << 32 ) | second ; if ( asi & 0x8 ) value = __swab64p ( & value ) ; flag = ( freg < 32 ) ? FPRS_DL : FPRS_DU ; if ( ! ( current_thread_info ( ) -> fpsaved [ 0 ] & FPRS_FEF ) ) { current_thread_info ( ) -> fpsaved [ 0 ] = FPRS_FEF ; current_thread_info ( ) -> gsr [ 0 ] = 0 ; } if ( ! ( current_thread_info ( ) -> fpsaved [ 0 ] & flag ) ) { if ( freg < 32 ) memset ( f -> regs , 0 , 32 * sizeof ( u32 ) ) ; else memset ( f -> regs + 32 , 0 , 32 * sizeof ( u32 ) ) ; } * ( u64 * ) ( f -> regs + freg ) = value ; current_thread_info ( ) -> fpsaved [ 0 ] |= flag ; } else { daex : if ( tlb_type == hypervisor ) sun4v_data_access_exception ( regs , sfar , sfsr ) ; else spitfire_data_access_exception ( regs , sfsr , sfar ) ; return ; } advance ( regs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , const char * * argv_ ) { int pass ; vpx_image_t raw ; <S2SV_StartBug> int frame_avail , got_data ; <S2SV_EndBug> <S2SV_StartBug> struct VpxInputContext input = { 0 } ; <S2SV_EndBug> struct VpxEncoderConfig global ; struct stream_state * streams = NULL ; char * * argv , * * argi ; uint64_t cx_time = 0 ; int stream_cnt = 0 ; int res = 0 ; <S2SV_StartBug> exec_name = argv_ [ 0 ] ; <S2SV_EndBug> if ( argc < 3 ) usage_exit ( ) ; input . framerate . numerator = 30 ; input . framerate . denominator = 1 ; <S2SV_StartBug> input . use_i420 = 1 ; <S2SV_EndBug> <S2SV_StartBug> input . only_i420 = 1 ; <S2SV_EndBug> argv = argv_dup ( argc - 1 , argv_ + 1 ) ; <S2SV_StartBug> parse_global_config ( & global , argv ) ; <S2SV_EndBug> { struct stream_state * stream = NULL ; do { stream = new_stream ( & global , stream ) ; stream_cnt ++ ; if ( ! streams ) streams = stream ; } while ( parse_stream_params ( & global , stream , argv ) ) ; } for ( argi = argv ; * argi ; argi ++ ) if ( argi [ 0 ] [ 0 ] == '-' && argi [ 0 ] [ 1 ] ) die ( \"Error:<S2SV_blank>Unrecognized<S2SV_blank>option<S2SV_blank>%s\\\\n\" , * argi ) ; FOREACH_STREAM ( check_encoder_config ( global . disable_warning_prompt , & global , & stream -> config . cfg ) ; ) ; input . filename = argv [ 0 ] ; if ( ! input . filename ) usage_exit ( ) ; if ( global . codec -> fourcc == VP9_FOURCC ) input . only_i420 = 0 ; for ( pass = global . pass ? global . pass - 1 : 0 ; pass < global . passes ; pass ++ ) { int frames_in = 0 , seen_frames = 0 ; int64_t estimated_time_left = - 1 ; int64_t average_rate = - 1 ; <S2SV_StartBug> off_t lagged_count = 0 ; <S2SV_EndBug> open_input_file ( & input ) ; <S2SV_StartBug> if ( ! input . width || ! input . height ) <S2SV_EndBug> FOREACH_STREAM ( { if ( stream -> config . cfg . g_w && stream -> config . cfg . g_h ) { input . width = stream -> config . cfg . g_w ; input . height = stream -> config . cfg . g_h ; break ; } <S2SV_StartBug> } ) ; <S2SV_EndBug> if ( ! input . width || ! input . height ) fatal ( \"Specify<S2SV_blank>stream<S2SV_blank>dimensions<S2SV_blank>with<S2SV_blank>--width<S2SV_blank>(-w)<S2SV_blank>\" <S2SV_StartBug> \"<S2SV_blank>and<S2SV_blank>--height<S2SV_blank>(-h)\" ) ; <S2SV_EndBug> FOREACH_STREAM ( set_stream_dimensions ( stream , input . width , input . height ) ) ; FOREACH_STREAM ( validate_stream_config ( stream , & global ) ) ; if ( global . pass && global . passes == 2 ) FOREACH_STREAM ( { if ( ! stream -> config . stats_fn ) die ( \"Stream<S2SV_blank>%d:<S2SV_blank>Must<S2SV_blank>specify<S2SV_blank>--fpf<S2SV_blank>when<S2SV_blank>--pass=%d\" \"<S2SV_blank>and<S2SV_blank>--passes=2\\\\n\" , stream -> index , global . pass ) ; } ) ; # if ! CONFIG_WEBM_IO FOREACH_STREAM ( { stream -> config . write_webm = 0 ; warn ( \"vpxenc<S2SV_blank>was<S2SV_blank>compiled<S2SV_blank>without<S2SV_blank>WebM<S2SV_blank>container<S2SV_blank>support.\" \"Producing<S2SV_blank>IVF<S2SV_blank>output\" ) ; } ) ; # endif if ( ! global . have_framerate ) { global . framerate . num = input . framerate . numerator ; global . framerate . den = input . framerate . denominator ; } FOREACH_STREAM ( set_default_kf_interval ( stream , & global ) ) ; if ( global . verbose && pass == 0 ) FOREACH_STREAM ( show_stream_config ( stream , & global , & input ) ) ; if ( pass == ( global . pass ? global . pass - 1 : 0 ) ) { if ( input . file_type == FILE_TYPE_Y4M ) memset ( & raw , 0 , sizeof ( raw ) ) ; else vpx_img_alloc ( & raw , <S2SV_StartBug> input . use_i420 ? VPX_IMG_FMT_I420 <S2SV_EndBug> : VPX_IMG_FMT_YV12 , input . width , input . height , 32 ) ; FOREACH_STREAM ( stream -> rate_hist = init_rate_histogram ( & stream -> config . cfg , & global . framerate ) ) ; } FOREACH_STREAM ( setup_pass ( stream , & global , pass ) ) ; <S2SV_StartBug> FOREACH_STREAM ( open_output_file ( stream , & global ) ) ; <S2SV_EndBug> <S2SV_StartBug> FOREACH_STREAM ( initialize_encoder ( stream , & global ) ) ; <S2SV_EndBug> frame_avail = 1 ; got_data = 0 ; while ( frame_avail || got_data ) { struct vpx_usec_timer timer ; if ( ! global . limit || frames_in < global . limit ) { frame_avail = read_frame ( & input , & raw ) ; if ( frame_avail ) frames_in ++ ; seen_frames = frames_in > global . skip_frames ? frames_in - global . skip_frames : 0 ; if ( ! global . quiet ) { float fps = usec_to_fps ( cx_time , seen_frames ) ; fprintf ( stderr , \"\\\\rPass<S2SV_blank>%d/%d<S2SV_blank>\" , pass + 1 , global . passes ) ; if ( stream_cnt == 1 ) fprintf ( stderr , \"frame<S2SV_blank>%4d/%-4d<S2SV_blank>%7\" PRId64 \"B<S2SV_blank>\" , frames_in , streams -> frames_out , ( int64_t ) streams -> nbytes ) ; else fprintf ( stderr , \"frame<S2SV_blank>%4d<S2SV_blank>\" , frames_in ) ; fprintf ( stderr , \"%7\" PRId64 \"<S2SV_blank>%s<S2SV_blank>%.2f<S2SV_blank>%s<S2SV_blank>\" , cx_time > 9999999 ? cx_time / 1000 : cx_time , cx_time > 9999999 ? \"ms\" : \"us\" , fps >= 1.0 ? fps : fps * 60 , fps >= 1.0 ? \"fps\" : \"fpm\" ) ; print_time ( \"ETA\" , estimated_time_left ) ; <S2SV_StartBug> fprintf ( stderr , \"\\\\033[K\" ) ; <S2SV_EndBug> } } else frame_avail = 0 ; <S2SV_StartBug> if ( frames_in > global . skip_frames ) { <S2SV_EndBug> vpx_usec_timer_start ( & timer ) ; FOREACH_STREAM ( encode_frame ( stream , & global , frame_avail ? & raw : NULL , frames_in ) ) ; <S2SV_StartBug> vpx_usec_timer_mark ( & timer ) ; <S2SV_EndBug> cx_time += vpx_usec_timer_elapsed ( & timer ) ; FOREACH_STREAM ( update_quantizer_histogram ( stream ) ) ; got_data = 0 ; FOREACH_STREAM ( get_cx_data ( stream , & global , & got_data ) ) ; <S2SV_StartBug> if ( ! got_data && input . length && ! streams -> frames_out ) { <S2SV_EndBug> lagged_count = global . limit ? seen_frames : ftello ( input . file ) ; } else if ( input . length ) { int64_t remaining ; int64_t rate ; if ( global . limit ) { <S2SV_StartBug> off_t frame_in_lagged = ( seen_frames - lagged_count ) * 1000 ; <S2SV_EndBug> rate = cx_time ? frame_in_lagged * ( int64_t ) 1000000 / cx_time : 0 ; remaining = 1000 * ( global . limit - global . skip_frames - seen_frames + lagged_count ) ; } else { <S2SV_StartBug> off_t input_pos = ftello ( input . file ) ; <S2SV_EndBug> <S2SV_StartBug> off_t input_pos_lagged = input_pos - lagged_count ; <S2SV_EndBug> <S2SV_StartBug> int64_t limit = input . length ; <S2SV_EndBug> rate = cx_time ? input_pos_lagged * ( int64_t ) 1000000 / cx_time : 0 ; remaining = limit - input_pos + lagged_count ; } average_rate = ( average_rate <= 0 ) ? rate : ( average_rate * 7 + rate ) / 8 ; estimated_time_left = average_rate ? remaining / average_rate : - 1 ; } if ( got_data && global . test_decode != TEST_DECODE_OFF ) FOREACH_STREAM ( test_decode ( stream , global . test_decode , global . codec ) ) ; } fflush ( stdout ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( stream_cnt > 1 ) fprintf ( stderr , \"\\\\n\" ) ; <S2SV_StartBug> if ( ! global . quiet ) <S2SV_EndBug> FOREACH_STREAM ( fprintf ( stderr , <S2SV_StartBug> \"\\\\rPass<S2SV_blank>%d/%d<S2SV_blank>frame<S2SV_blank>%4d/%-4d<S2SV_blank>%7\" PRId64 \"B<S2SV_blank>%7lub/f<S2SV_blank>%7\" PRId64 \"b/s\" <S2SV_EndBug> \"<S2SV_blank>%7\" PRId64 \"<S2SV_blank>%s<S2SV_blank>(%.2f<S2SV_blank>fps)\\\\033[K\\\\n\" , pass + 1 , global . passes , frames_in , stream -> frames_out , ( int64_t ) stream -> nbytes , <S2SV_StartBug> seen_frames ? ( unsigned long ) ( stream -> nbytes * 8 / seen_frames ) : 0 , <S2SV_EndBug> seen_frames ? ( int64_t ) stream -> nbytes * 8 * ( int64_t ) global . framerate . num / global . framerate . den / seen_frames : 0 , stream -> cx_time > 9999999 ? stream -> cx_time / 1000 : stream -> cx_time , stream -> cx_time > 9999999 ? \"ms\" : \"us\" , <S2SV_StartBug> usec_to_fps ( stream -> cx_time , seen_frames ) ) ; <S2SV_EndBug> ) ; if ( global . show_psnr ) <S2SV_StartBug> FOREACH_STREAM ( show_psnr ( stream ) ) ; <S2SV_EndBug> FOREACH_STREAM ( vpx_codec_destroy ( & stream -> encoder ) ) ; if ( global . test_decode != TEST_DECODE_OFF ) { FOREACH_STREAM ( vpx_codec_destroy ( & stream -> decoder ) ) ; } close_input_file ( & input ) ; if ( global . test_decode == TEST_DECODE_FATAL ) { FOREACH_STREAM ( res |= stream -> mismatch_seen ) ; } FOREACH_STREAM ( close_output_file ( stream , global . codec -> fourcc ) ) ; <S2SV_StartBug> FOREACH_STREAM ( stats_close ( & stream -> stats , global . passes - 1 ) ) ; <S2SV_EndBug> if ( global . pass ) break ; } if ( global . show_q_hist_buckets ) FOREACH_STREAM ( show_q_histogram ( stream -> counts , global . show_q_hist_buckets ) ) ; if ( global . show_rate_hist_buckets ) FOREACH_STREAM ( show_rate_histogram ( stream -> rate_hist , & stream -> config . cfg , global . show_rate_hist_buckets ) ) ; FOREACH_STREAM ( destroy_rate_histogram ( stream -> rate_hist ) ) ; # if CONFIG_INTERNAL_STATS if ( ! ( global . pass == 1 && global . passes == 2 ) ) FOREACH_STREAM ( { FILE * f = fopen ( \"opsnr.stt\" , \"a\" ) ; if ( stream -> mismatch_seen ) { fprintf ( f , \"First<S2SV_blank>mismatch<S2SV_blank>occurred<S2SV_blank>in<S2SV_blank>frame<S2SV_blank>%d\\\\n\" , stream -> mismatch_seen ) ; } else { fprintf ( f , \"No<S2SV_blank>mismatch<S2SV_blank>detected<S2SV_blank>in<S2SV_blank>recon<S2SV_blank>buffers\\\\n\" ) ; } fclose ( f ) ; <S2SV_StartBug> } ) ; <S2SV_EndBug> # endif vpx_img_free ( & raw ) ; free ( argv ) ; free ( streams ) ; return res ? EXIT_FAILURE : EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_image_t raw ; # if CONFIG_VP9_HIGHBITDEPTH vpx_image_t raw_shift ; int allocated_raw_shift = 0 ; int use_16bit_internal = 0 ; int input_shift = 0 ; # endif <S2SV_ModStart> struct VpxInputContext input <S2SV_ModEnd> ; struct VpxEncoderConfig <S2SV_ModStart> = 0 ; memset ( & input , 0 , sizeof ( input ) ) ; <S2SV_ModStart> ; input . only_i420 <S2SV_ModEnd> = 1 ; <S2SV_ModStart> ; input . bit_depth = 0 <S2SV_ModEnd> ; argv = <S2SV_ModStart> argv ) ; switch ( global . color_type ) { case I420 : input . fmt = VPX_IMG_FMT_I420 ; break ; case I422 : input . fmt = VPX_IMG_FMT_I422 ; break ; case I444 : input . fmt = VPX_IMG_FMT_I444 ; break ; case I440 : input . fmt = VPX_IMG_FMT_I440 ; break ; case YV12 : input . fmt = VPX_IMG_FMT_YV12 ; break ; } <S2SV_ModStart> - 1 ; int64_t <S2SV_ModEnd> lagged_count = 0 <S2SV_ModStart> . height ) { <S2SV_ModStart> } ) ; } <S2SV_ModStart> \"<S2SV_blank>and<S2SV_blank>--height<S2SV_blank>(-h)\" ) ; if ( ! input . bit_depth ) { FOREACH_STREAM ( { if ( stream -> config . cfg . g_input_bit_depth ) input . bit_depth = stream -> config . cfg . g_input_bit_depth ; else input . bit_depth = stream -> config . cfg . g_input_bit_depth = ( int ) stream -> config . cfg . g_bit_depth ; } ) ; if ( input . bit_depth > 8 ) input . fmt |= VPX_IMG_FMT_HIGHBITDEPTH ; } else { FOREACH_STREAM ( { stream -> config . cfg . g_input_bit_depth = input . bit_depth ; } ) ; } <S2SV_ModStart> & raw , input . fmt , <S2SV_ModEnd> input . width <S2SV_ModStart> , & global , & input . pixel_aspect_ratio <S2SV_ModStart> ) ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( strcmp ( global . codec -> name , \"vp9\" ) == 0 || strcmp ( global . codec -> name , \"vp10\" ) == 0 ) { FOREACH_STREAM ( { if ( stream -> config . use_16bit_internal ) { use_16bit_internal = 1 ; } if ( stream -> config . cfg . g_profile == 0 ) { input_shift = 0 ; } else { input_shift = ( int ) stream -> config . cfg . g_bit_depth - stream -> config . cfg . g_input_bit_depth ; } } ) ; } # endif <S2SV_ModStart> estimated_time_left ) ; <S2SV_ModEnd> } } else <S2SV_ModStart> skip_frames ) { # if CONFIG_VP9_HIGHBITDEPTH vpx_image_t * frame_to_encode ; if ( input_shift || ( use_16bit_internal && input . bit_depth == 8 ) ) { assert ( use_16bit_internal ) ; if ( ! allocated_raw_shift ) { vpx_img_alloc ( & raw_shift , raw . fmt | VPX_IMG_FMT_HIGHBITDEPTH , input . width , input . height , 32 ) ; allocated_raw_shift = 1 ; } vpx_img_upshift ( & raw_shift , & raw , input_shift ) ; frame_to_encode = & raw_shift ; } else { frame_to_encode = & raw ; } vpx_usec_timer_start ( & timer ) ; if ( use_16bit_internal ) { assert ( frame_to_encode -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ; FOREACH_STREAM ( { if ( stream -> config . use_16bit_internal ) encode_frame ( stream , & global , frame_avail ? frame_to_encode : NULL , frames_in ) ; else assert ( 0 ) ; } ) ; } else { assert ( ( frame_to_encode -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) == 0 ) ; FOREACH_STREAM ( encode_frame ( stream , & global , frame_avail ? frame_to_encode : NULL , frames_in ) ) ; } # else <S2SV_ModStart> ) ) ; # endif <S2SV_ModStart> . length && streams != NULL && <S2SV_ModStart> limit ) { const int64_t <S2SV_ModEnd> frame_in_lagged = ( <S2SV_ModStart> } else { const int64_t <S2SV_ModEnd> input_pos = ftello <S2SV_ModStart> file ) ; const int64_t <S2SV_ModEnd> input_pos_lagged = input_pos <S2SV_ModStart> - lagged_count ; const <S2SV_ModStart> stdout ) ; if ( ! global . quiet ) fprintf ( stderr , \"\\\\033[K\" ) ; <S2SV_ModStart> . quiet ) { <S2SV_ModStart> , \"\\\\rPass<S2SV_blank>%d/%d<S2SV_blank>frame<S2SV_blank>%4d/%-4d<S2SV_blank>%7\" PRId64 \"B<S2SV_blank>%7\" PRId64 \"b/f<S2SV_blank>%7\" <S2SV_ModEnd> PRId64 \"b/s\" \"<S2SV_blank>%7\" <S2SV_ModStart> seen_frames ? ( int64_t <S2SV_ModEnd> ) ( stream <S2SV_ModStart> seen_frames ) ) ) ; } <S2SV_ModEnd> if ( global <S2SV_ModStart> . show_psnr ) { if ( global . codec -> fourcc == VP9_FOURCC ) { FOREACH_STREAM ( <S2SV_ModEnd> show_psnr ( stream <S2SV_ModStart> show_psnr ( stream , ( 1 << stream -> config . cfg . g_input_bit_depth ) - 1 ) ) ; } else { FOREACH_STREAM ( show_psnr ( stream , 255.0 ) ) ; } } <S2SV_ModEnd> FOREACH_STREAM ( vpx_codec_destroy <S2SV_ModStart> ) ) ; # if CONFIG_FP_MB_STATS FOREACH_STREAM ( stats_close ( & stream -> fpmb_stats , global . passes - 1 ) ) ; # endif <S2SV_ModStart> ) ; } ) ; # endif # if CONFIG_VP9_HIGHBITDEPTH if ( allocated_raw_shift ) vpx_img_free ( & raw_shift\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16909\n\n```\nCWE-119 void CLASS parse_fuji ( int offset ) { unsigned entries , tag , len , save , c ; fseek ( ifp , offset , SEEK_SET ) ; entries = get4 ( ) ; if ( entries > 255 ) return ; <S2SV_StartBug> while ( entries -- ) <S2SV_EndBug> { tag = get2 ( ) ; len = get2 ( ) ; save = ftell ( ifp ) ; if ( tag == 0x100 ) { raw_height = get2 ( ) ; raw_width = get2 ( ) ; } else if ( tag == 0x121 ) { height = get2 ( ) ; if ( ( width = get2 ( ) ) == 4284 ) width += 3 ; } else if ( tag == 0x130 ) { fuji_layout = fgetc ( ifp ) >> 7 ; fuji_width = ! ( fgetc ( ifp ) & 8 ) ; } else if ( tag == 0x131 ) { filters = 9 ; FORC ( 36 ) { int q = fgetc ( ifp ) ; xtrans_abs [ 0 ] [ 35 - c ] = MAX ( 0 , MIN ( q , 2 ) ) ; } } else if ( tag == 0x2ff0 ) { FORC4 cam_mul [ c ^ 1 ] = get2 ( ) ; # ifdef LIBRAW_LIBRARY_BUILD } else if ( tag == 0x9650 ) { short a = ( short ) get2 ( ) ; float b = fMAX ( 1.0f , get2 ( ) ) ; imgdata . makernotes . fuji . FujiExpoMidPointShift = a / b ; } else if ( tag == 0x2f00 ) { int nWBs = get4 ( ) ; nWBs = MIN ( nWBs , 6 ) ; for ( int wb_ind = 0 ; wb_ind < nWBs ; wb_ind ++ ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Custom1 + wb_ind ] [ c ^ 1 ] = get2 ( ) ; fseek ( ifp , 8 , SEEK_CUR ) ; } } else if ( tag == 0x2000 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Auto ] [ c ^ 1 ] = get2 ( ) ; } else if ( tag == 0x2100 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FineWeather ] [ c ^ 1 ] = get2 ( ) ; } else if ( tag == 0x2200 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Shade ] [ c ^ 1 ] = get2 ( ) ; } else if ( tag == 0x2300 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_D ] [ c ^ 1 ] = get2 ( ) ; } else if ( tag == 0x2301 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_N ] [ c ^ 1 ] = get2 ( ) ; } else if ( tag == 0x2302 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_WW ] [ c ^ 1 ] = get2 ( ) ; } else if ( tag == 0x2310 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_L ] [ c ^ 1 ] = get2 ( ) ; } else if ( tag == 0x2400 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Tungsten ] [ c ^ 1 ] = get2 ( ) ; } else if ( tag == 0x2410 ) { FORC4 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Flash ] [ c ^ 1 ] = get2 ( ) ; # endif } else if ( tag == 0xc000 ) { c = order ; order = 0x4949 ; if ( ( tag = get4 ( ) ) > 10000 ) tag = get4 ( ) ; if ( tag > 10000 ) tag = get4 ( ) ; width = tag ; height = get4 ( ) ; # ifdef LIBRAW_LIBRARY_BUILD if ( ! strcmp ( model , \"X-A3\" ) || ! strcmp ( model , \"X-A10\" ) ) { int wb [ 4 ] ; int nWB , tWB , pWB ; int iCCT = 0 ; int cnt ; fseek ( ifp , save + 0x200 , SEEK_SET ) ; for ( int wb_ind = 0 ; wb_ind < 42 ; wb_ind ++ ) { nWB = get4 ( ) ; tWB = get4 ( ) ; wb [ 0 ] = get4 ( ) << 1 ; wb [ 1 ] = get4 ( ) ; wb [ 3 ] = get4 ( ) ; wb [ 2 ] = get4 ( ) << 1 ; if ( tWB && ( iCCT < 255 ) ) { imgdata . color . WBCT_Coeffs [ iCCT ] [ 0 ] = tWB ; for ( cnt = 0 ; cnt < 4 ; cnt ++ ) imgdata . color . WBCT_Coeffs [ iCCT ] [ cnt + 1 ] = wb [ cnt ] ; iCCT ++ ; } if ( nWB != 70 ) { for ( pWB = 1 ; pWB < nFuji_wb_list2 ; pWB += 2 ) { if ( Fuji_wb_list2 [ pWB ] == nWB ) { for ( cnt = 0 ; cnt < 4 ; cnt ++ ) imgdata . color . WB_Coeffs [ Fuji_wb_list2 [ pWB - 1 ] ] [ cnt ] = wb [ cnt ] ; break ; } } } } } else { libraw_internal_data . unpacker_data . posRAFData = save ; libraw_internal_data . unpacker_data . lenRAFData = ( len >> 1 ) ; } # endif order = c ; } fseek ( ifp , save + len , SEEK_SET ) ; } height <<= fuji_layout ; width >>= fuji_layout ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; # ifdef LIBRAW_LIBRARY_BUILD imgdata . process_warnings |= LIBRAW_WARN_PARSEFUJI_PROCESSED ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_regulate_q ( VP8_COMP * cpi , int target_bits_per_frame ) { <S2SV_StartBug> int Q = cpi -> active_worst_quality ; <S2SV_EndBug> cpi -> mb . zbin_over_quant = 0 ; if ( cpi -> oxcf . fixed_q >= 0 ) { Q = cpi -> oxcf . fixed_q ; if ( cpi -> common . frame_type == KEY_FRAME ) { Q = cpi -> oxcf . key_q ; } else if ( cpi -> oxcf . number_of_layers == 1 && cpi -> common . refresh_alt_ref_frame ) { Q = cpi -> oxcf . alt_q ; } else if ( cpi -> oxcf . number_of_layers == 1 && cpi -> common . refresh_golden_frame ) { Q = cpi -> oxcf . gold_q ; } } else { int i ; int last_error = INT_MAX ; int target_bits_per_mb ; int bits_per_mb_at_this_q ; double correction_factor ; if ( cpi -> common . frame_type == KEY_FRAME ) correction_factor = cpi -> key_frame_rate_correction_factor ; else { if ( cpi -> oxcf . number_of_layers == 1 && ( cpi -> common . refresh_alt_ref_frame || cpi -> common . refresh_golden_frame ) ) correction_factor = cpi -> gf_rate_correction_factor ; else correction_factor = cpi -> rate_correction_factor ; } if ( target_bits_per_frame >= ( INT_MAX >> BPER_MB_NORMBITS ) ) target_bits_per_mb = ( target_bits_per_frame / cpi -> common . MBs ) << BPER_MB_NORMBITS ; else target_bits_per_mb = ( target_bits_per_frame << BPER_MB_NORMBITS ) / cpi -> common . MBs ; i = cpi -> active_best_quality ; do { bits_per_mb_at_this_q = ( int ) ( .5 + correction_factor * vp8_bits_per_mb [ cpi -> common . frame_type ] [ i ] ) ; if ( bits_per_mb_at_this_q <= target_bits_per_mb ) { if ( ( target_bits_per_mb - bits_per_mb_at_this_q ) <= last_error ) Q = i ; else Q = i - 1 ; break ; } else last_error = bits_per_mb_at_this_q - target_bits_per_mb ; } while ( ++ i <= cpi -> active_worst_quality ) ; if ( Q >= MAXQ ) { int zbin_oqmax ; double Factor = 0.99 ; double factor_adjustment = 0.01 / 256.0 ; if ( cpi -> common . frame_type == KEY_FRAME ) zbin_oqmax = 0 ; else if ( cpi -> oxcf . number_of_layers == 1 && ( cpi -> common . refresh_alt_ref_frame || ( cpi -> common . refresh_golden_frame && ! cpi -> source_alt_ref_active ) ) ) zbin_oqmax = 16 ; else zbin_oqmax = ZBIN_OQ_MAX ; while ( cpi -> mb . zbin_over_quant < zbin_oqmax ) { cpi -> mb . zbin_over_quant ++ ; if ( cpi -> mb . zbin_over_quant > zbin_oqmax ) cpi -> mb . zbin_over_quant = zbin_oqmax ; bits_per_mb_at_this_q = ( int ) ( Factor * bits_per_mb_at_this_q ) ; Factor += factor_adjustment ; if ( Factor >= 0.999 ) Factor = 0.999 ; if ( bits_per_mb_at_this_q <= target_bits_per_mb ) break ; } } } return Q ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> active_worst_quality ; if ( cpi -> force_maxqp == 1 ) { cpi -> active_worst_quality = cpi -> worst_quality ; return cpi -> worst_quality ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-674 static void Rp_test ( js_State * J ) { js_Regexp * re ; const char * text ; <S2SV_StartBug> int opts ; <S2SV_EndBug> Resub m ; re = js_toregexp ( J , 0 ) ; text = js_tostring ( J , 1 ) ; opts = 0 ; if ( re -> flags & JS_REGEXP_G ) { if ( re -> last > strlen ( text ) ) { re -> last = 0 ; js_pushboolean ( J , 0 ) ; return ; } if ( re -> last > 0 ) { text += re -> last ; opts |= REG_NOTBOL ; } } <S2SV_StartBug> if ( ! js_regexec ( re -> prog , text , & m , opts ) ) { <S2SV_EndBug> if ( re -> flags & JS_REGEXP_G ) re -> last = re -> last + ( m . sub [ 0 ] . ep - text ) ; js_pushboolean ( J , 1 ) ; return ; } if ( re -> flags & JS_REGEXP_G ) re -> last = 0 ; js_pushboolean ( J , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> text ; int result ; int <S2SV_ModStart> ; } } result = <S2SV_ModEnd> js_regexec ( re <S2SV_ModStart> , opts ) ; if ( result < 0 ) js_error ( J , \"regexec<S2SV_blank>failed\" ) ; if ( result == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15148\n\n```\nCWE-787 <S2SV_StartBug> uint32_t GetPayloadTime ( size_t handle , uint32_t index , float * in , float * out ) <S2SV_EndBug> { mp4object * mp4 = ( mp4object * ) handle ; <S2SV_StartBug> if ( mp4 == NULL ) return 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( mp4 -> metaoffsets == 0 || mp4 -> basemetadataduration == 0 || mp4 -> meta_clockdemon == 0 || in == NULL || out == NULL ) return 1 ; <S2SV_EndBug> <S2SV_StartBug> * in = ( float ) ( ( double ) index * ( double ) mp4 -> basemetadataduration / ( double ) mp4 -> meta_clockdemon ) ; <S2SV_EndBug> <S2SV_StartBug> * out = ( float ) ( ( double ) ( index + 1 ) * ( double ) mp4 -> basemetadataduration / ( double ) mp4 -> meta_clockdemon ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t index , double <S2SV_ModEnd> * in , <S2SV_ModStart> * in , double <S2SV_ModEnd> * out ) <S2SV_ModStart> NULL ) return GPMF_ERROR_MEMORY <S2SV_ModEnd> ; if ( <S2SV_ModStart> NULL ) return GPMF_ERROR_MEMORY <S2SV_ModEnd> ; * in <S2SV_ModStart> * in = <S2SV_ModEnd> ( ( double <S2SV_ModStart> * out = <S2SV_ModEnd> ( ( double <S2SV_ModStart> ) ; return GPMF_OK <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6346\n\n```\nCWE-362 static void fanout_release ( struct sock * sk ) { struct packet_sock * po = pkt_sk ( sk ) ; struct packet_fanout * f ; <S2SV_StartBug> f = po -> fanout ; <S2SV_EndBug> <S2SV_StartBug> if ( ! f ) <S2SV_EndBug> return ; mutex_lock ( & fanout_mutex ) ; po -> fanout = NULL ; if ( atomic_dec_and_test ( & f -> sk_ref ) ) { list_del ( & f -> list ) ; dev_remove_pack ( & f -> prot_hook ) ; fanout_release_data ( f ) ; kfree ( f ) ; } <S2SV_StartBug> mutex_unlock ( & fanout_mutex ) ; <S2SV_EndBug> if ( po -> rollover ) kfree_rcu ( po -> rollover , rcu ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * f ; mutex_lock ( & fanout_mutex ) ; <S2SV_ModStart> ; if ( f ) { <S2SV_ModEnd> po -> fanout <S2SV_ModStart> ) ; } <S2SV_ModEnd> if ( po <S2SV_ModStart> ) ; } mutex_unlock ( & fanout_mutex ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_predict_intra_block ( const MACROBLOCKD * xd , int block_idx , int bwl_in , <S2SV_EndBug> <S2SV_StartBug> TX_SIZE tx_size , MB_PREDICTION_MODE mode , <S2SV_EndBug> const uint8_t * ref , int ref_stride , uint8_t * dst , int dst_stride , int aoff , int loff , int plane ) { <S2SV_StartBug> const int bwl = bwl_in - tx_size ; <S2SV_EndBug> <S2SV_StartBug> const int wmask = ( 1 << bwl ) - 1 ; <S2SV_EndBug> <S2SV_StartBug> const int have_top = ( block_idx >> bwl ) || xd -> up_available ; <S2SV_EndBug> <S2SV_StartBug> const int have_left = ( block_idx & wmask ) || xd -> left_available ; <S2SV_EndBug> const int have_right = ( ( block_idx & wmask ) != wmask ) ; const int x = aoff * 4 ; const int y = loff * 4 ; assert ( bwl >= 0 ) ; build_intra_predictors ( xd , ref , ref_stride , dst , dst_stride , mode , tx_size , have_top , have_left , have_right , x , y , plane ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> xd , int <S2SV_ModEnd> bwl_in , TX_SIZE <S2SV_ModStart> TX_SIZE tx_size , PREDICTION_MODE <S2SV_ModEnd> mode , const <S2SV_ModStart> { const int bw <S2SV_ModEnd> = ( 1 <S2SV_ModStart> ( 1 << bwl_in ) ; const int txw = ( 1 << tx_size ) <S2SV_ModEnd> ; const int <S2SV_ModStart> int have_top = loff <S2SV_ModEnd> || xd -> <S2SV_ModStart> int have_left = aoff || xd -> left_available ; const int have_right = ( aoff + txw ) < bw ; const int x = aoff * 4 ; const int y = loff * 4 ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { build_intra_predictors_high ( xd , ref , ref_stride , dst , dst_stride , mode , tx_size , have_top , have_left , have_right , x , y , plane , xd -> bd ) ; return ; } # endif <S2SV_ModEnd> build_intra_predictors ( xd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12902\n\n```\nCWE-125 void zephyr_print ( netdissect_options * ndo , const u_char * cp , int length ) { struct z_packet z ; const char * parse = ( const char * ) cp ; int parselen = length ; const char * s ; int lose = 0 ; <S2SV_StartBug> z . kind = 0 ; <S2SV_EndBug> z . class = 0 ; z . inst = 0 ; z . opcode = 0 ; z . sender = 0 ; z . recipient = 0 ; <S2SV_StartBug> # define PARSE_STRING s = parse_field ( ndo , & parse , & parselen ) ; if ( ! s ) lose = 1 ; <S2SV_EndBug> # define PARSE_FIELD_INT ( field ) PARSE_STRING if ( ! lose ) field = strtol ( s , 0 , 16 ) ; # define PARSE_FIELD_STR ( field ) PARSE_STRING if ( ! lose ) field = s ; PARSE_FIELD_STR ( z . version ) ; if ( lose ) return ; if ( strncmp ( z . version , \"ZEPH\" , 4 ) ) return ; PARSE_FIELD_INT ( z . numfields ) ; PARSE_FIELD_INT ( z . kind ) ; PARSE_FIELD_STR ( z . uid ) ; PARSE_FIELD_INT ( z . port ) ; PARSE_FIELD_INT ( z . auth ) ; PARSE_FIELD_INT ( z . authlen ) ; PARSE_FIELD_STR ( z . authdata ) ; PARSE_FIELD_STR ( z . class ) ; PARSE_FIELD_STR ( z . inst ) ; PARSE_FIELD_STR ( z . opcode ) ; PARSE_FIELD_STR ( z . sender ) ; PARSE_FIELD_STR ( z . recipient ) ; PARSE_FIELD_STR ( z . format ) ; PARSE_FIELD_INT ( z . cksum ) ; PARSE_FIELD_INT ( z . multi ) ; PARSE_FIELD_STR ( z . multi_uid ) ; <S2SV_StartBug> if ( lose ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>[|zephyr]<S2SV_blank>(%d)\" , length ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>zephyr\" ) ) ; if ( strncmp ( z . version + 4 , \"0.2\" , 3 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>v%s\" , z . version + 4 ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( z_types , \"type<S2SV_blank>%d\" , z . kind ) ) ) ; if ( z . kind == Z_PACKET_SERVACK ) { const char * ackdata = NULL ; PARSE_FIELD_STR ( ackdata ) ; if ( ! lose && strcmp ( ackdata , \"SENT\" ) ) ND_PRINT ( ( ndo , \"/%s\" , str_to_lower ( ackdata ) ) ) ; } if ( * z . sender ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , z . sender ) ) ; if ( ! strcmp ( z . class , \"USER_LOCATE\" ) ) { if ( ! strcmp ( z . opcode , \"USER_HIDE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>hide\" ) ) ; else if ( ! strcmp ( z . opcode , \"USER_UNHIDE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>unhide\" ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>locate<S2SV_blank>%s\" , z . inst ) ) ; return ; } if ( ! strcmp ( z . class , \"ZEPHYR_ADMIN\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>zephyr-admin<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . class , \"ZEPHYR_CTL\" ) ) { if ( ! strcmp ( z . inst , \"CLIENT\" ) ) { if ( ! strcmp ( z . opcode , \"SUBSCRIBE\" ) || ! strcmp ( z . opcode , \"SUBSCRIBE_NODEFS\" ) || ! strcmp ( z . opcode , \"UNSUBSCRIBE\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%ssub%s\" , strcmp ( z . opcode , \"SUBSCRIBE\" ) ? \"un\" : \"\" , strcmp ( z . opcode , \"SUBSCRIBE_NODEFS\" ) ? \"\" : \"-nodefs\" ) ) ; if ( z . kind != Z_PACKET_SERVACK ) { const char * c = NULL , * i = NULL , * r = NULL ; PARSE_FIELD_STR ( c ) ; PARSE_FIELD_STR ( i ) ; PARSE_FIELD_STR ( r ) ; if ( ! lose ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , z_triple ( c , i , r ) ) ) ; } return ; } if ( ! strcmp ( z . opcode , \"GIMME\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ret\" ) ) ; return ; } if ( ! strcmp ( z . opcode , \"GIMMEDEFS\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>gimme-defs\" ) ) ; return ; } if ( ! strcmp ( z . opcode , \"CLEARSUB\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>clear-subs\" ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . inst , \"HM\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . inst , \"REALM\" ) ) { if ( ! strcmp ( z . opcode , \"ADD_SUBSCRIBE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>realm<S2SV_blank>add-subs\" ) ) ; if ( ! strcmp ( z . opcode , \"REQ_SUBSCRIBE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>realm<S2SV_blank>req-subs\" ) ) ; if ( ! strcmp ( z . opcode , \"RLM_SUBSCRIBE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>realm<S2SV_blank>rlm-sub\" ) ) ; if ( ! strcmp ( z . opcode , \"RLM_UNSUBSCRIBE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>realm<S2SV_blank>rlm-unsub\" ) ) ; return ; } } if ( ! strcmp ( z . class , \"HM_CTL\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>hm_ctl<S2SV_blank>%s\" , str_to_lower ( z . inst ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . class , \"HM_STAT\" ) ) { if ( ! strcmp ( z . inst , \"HMST_CLIENT\" ) && ! strcmp ( z . opcode , \"GIMMESTATS\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>get-client-stats\" ) ) ; return ; } } if ( ! strcmp ( z . class , \"WG_CTL\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>wg_ctl<S2SV_blank>%s\" , str_to_lower ( z . inst ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . class , \"LOGIN\" ) ) { if ( ! strcmp ( z . opcode , \"USER_FLUSH\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>flush_locs\" ) ) ; return ; } if ( ! strcmp ( z . opcode , \"NONE\" ) || ! strcmp ( z . opcode , \"OPSTAFF\" ) || ! strcmp ( z . opcode , \"REALM-VISIBLE\" ) || ! strcmp ( z . opcode , \"REALM-ANNOUNCED\" ) || ! strcmp ( z . opcode , \"NET-VISIBLE\" ) || ! strcmp ( z . opcode , \"NET-ANNOUNCED\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>set-exposure<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } } if ( ! * z . recipient ) z . recipient = \"*\" ; ND_PRINT ( ( ndo , \"<S2SV_blank>to<S2SV_blank>%s\" , z_triple ( z . class , z . inst , z . recipient ) ) ) ; if ( * z . opcode ) ND_PRINT ( ( ndo , \"<S2SV_blank>op<S2SV_blank>%s\" , z . opcode ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; int truncated = 0 ; <S2SV_ModStart> , & parselen , & truncated ) ; if ( truncated ) goto trunc <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( lose ) goto trunc ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|zephyr]<S2SV_blank>(%d)\" , length ) ) ; return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14459\n\n```\nCWE-190 static void Process_ipfix_template_withdraw ( exporter_ipfix_domain_t * exporter , void * DataPtr , uint32_t size_left , FlowSource_t * fs ) { ipfix_template_record_t * ipfix_template_record ; while ( size_left ) { <S2SV_StartBug> uint32_t id ; <S2SV_EndBug> ipfix_template_record = ( ipfix_template_record_t * ) DataPtr ; size_left -= 4 ; id = ntohs ( ipfix_template_record -> TemplateID ) ; if ( id == IPFIX_TEMPLATE_FLOWSET_ID ) { remove_all_translation_tables ( exporter ) ; ReInitExtensionMapList ( fs ) ; } else { remove_translation_table ( fs , exporter , id ) ; } DataPtr = DataPtr + 4 ; if ( size_left < 4 ) { dbg_printf ( \"Skip<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>padding\\\\n\" , size_left ) ; size_left = 0 ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t id ; if ( size_left < 4 ) { LogError ( \"Process_ipfix<S2SV_blank>[%u]<S2SV_blank>Template<S2SV_blank>withdraw<S2SV_blank>size<S2SV_blank>error<S2SV_blank>at<S2SV_blank>%s<S2SV_blank>line<S2SV_blank>%u\" , exporter -> info . id , __FILE__ , __LINE__ , strerror ( errno ) ) ; size_left = 0 ; continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10067\n\n```\nCWE-119 MagickExport void * AcquireAlignedMemory ( const size_t count , const size_t quantum ) { # define AlignedExtent ( size , alignment ) ( ( ( size ) + ( ( alignment ) - 1 ) ) & ~ ( ( alignment ) - 1 ) ) size_t alignment , extent , size ; void * memory ; <S2SV_StartBug> if ( CheckMemoryOverflow ( count , quantum ) != MagickFalse ) <S2SV_EndBug> return ( ( void * ) NULL ) ; memory = NULL ; alignment = CACHE_LINE_SIZE ; size = count * quantum ; extent = AlignedExtent ( size , alignment ) ; if ( ( size == 0 ) || ( alignment < sizeof ( void * ) ) || ( extent < size ) ) return ( ( void * ) NULL ) ; # if defined ( MAGICKCORE_HAVE_POSIX_MEMALIGN ) if ( posix_memalign ( & memory , alignment , extent ) != 0 ) memory = NULL ; # elif defined ( MAGICKCORE_HAVE__ALIGNED_MALLOC ) memory = _aligned_malloc ( extent , alignment ) ; # else { void * p ; extent = ( size + alignment - 1 ) + sizeof ( void * ) ; if ( extent > size ) { p = malloc ( extent ) ; if ( p != NULL ) { memory = ( void * ) AlignedExtent ( ( size_t ) p + sizeof ( void * ) , alignment ) ; * ( ( void * * ) memory - 1 ) = p ; } } } # endif return ( memory ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( HeapOverflowSanityCheck <S2SV_ModEnd> ( count ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7527\n\n```\nCWE-125 static Image * ExtractPostscript ( Image * image , const ImageInfo * image_info , MagickOffsetType PS_Offset , ssize_t PS_Size , ExceptionInfo * exception ) { char postscript_file [ MagickPathExtent ] ; const MagicInfo * magic_info ; FILE * ps_file ; ImageInfo * clone_info ; Image * image2 ; unsigned char magick [ 2 * MagickPathExtent ] ; if ( ( clone_info = CloneImageInfo ( image_info ) ) == NULL ) return ( image ) ; clone_info -> blob = ( void * ) NULL ; clone_info -> length = 0 ; ( void ) AcquireUniqueFilename ( postscript_file ) ; ps_file = fopen_utf8 ( postscript_file , \"wb\" ) ; if ( ps_file == ( FILE * ) NULL ) goto FINISH ; ( void ) SeekBlob ( image , PS_Offset , SEEK_SET ) ; ( void ) ReadBlob ( image , 2 * MagickPathExtent , magick ) ; ( void ) SeekBlob ( image , PS_Offset , SEEK_SET ) ; while ( PS_Size -- > 0 ) { ( void ) fputc ( ReadBlobByte ( image ) , ps_file ) ; } ( void ) fclose ( ps_file ) ; magic_info = GetMagicInfo ( magick , 2 * MagickPathExtent , exception ) ; if ( magic_info == ( const MagicInfo * ) NULL ) goto FINISH_UNL ; if ( exception -> severity != UndefinedException ) goto FINISH_UNL ; if ( magic_info -> name == ( char * ) NULL ) goto FINISH_UNL ; <S2SV_StartBug> ( void ) CopyMagickMemory ( clone_info -> magick , magic_info -> name , MagickPathExtent ) ; <S2SV_EndBug> FormatLocaleString ( clone_info -> filename , MagickPathExtent , \"%s\" , postscript_file ) ; image2 = ReadImage ( clone_info , exception ) ; if ( ! image2 ) goto FINISH_UNL ; ( void ) CopyMagickMemory ( image2 -> filename , image -> filename , MagickPathExtent ) ; ( void ) CopyMagickMemory ( image2 -> magick_filename , image -> magick_filename , MagickPathExtent ) ; ( void ) CopyMagickMemory ( image2 -> magick , image -> magick , MagickPathExtent ) ; image2 -> depth = image -> depth ; DestroyBlob ( image2 ) ; image2 -> blob = ReferenceBlob ( image -> blob ) ; if ( ( image -> rows == 0 ) || ( image -> columns == 0 ) ) DeleteImageFromList ( & image ) ; AppendImageToList ( & image , image2 ) ; FINISH_UNL : ( void ) RelinquishUniqueFileResource ( postscript_file ) ; FINISH : DestroyImageInfo ( clone_info ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( void ) strncpy <S2SV_ModEnd> ( clone_info ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20763\n\n```\nCWE-787 char * gf_text_get_utf8_line ( char * szLine , u32 lineSize , FILE * txt_in , s32 unicode_type ) { u32 i , j , len ; char * sOK ; char szLineConv [ 1024 ] ; unsigned short * sptr ; memset ( szLine , 0 , sizeof ( char ) * lineSize ) ; sOK = fgets ( szLine , lineSize , txt_in ) ; if ( ! sOK ) return NULL ; if ( unicode_type <= 1 ) { j = 0 ; len = ( u32 ) strlen ( szLine ) ; <S2SV_StartBug> for ( i = 0 ; i < len ; i ++ ) { <S2SV_EndBug> if ( ! unicode_type && ( szLine [ i ] & 0x80 ) ) { if ( ( szLine [ i + 1 ] & 0xc0 ) != 0x80 ) { <S2SV_StartBug> szLineConv [ j ] = 0xc0 | ( ( szLine [ i ] >> 6 ) & 0x3 ) ; <S2SV_EndBug> j ++ ; szLine [ i ] &= 0xbf ; } <S2SV_StartBug> else if ( ( szLine [ i ] & 0xe0 ) == 0xc0 ) { <S2SV_EndBug> <S2SV_StartBug> szLineConv [ j ] = szLine [ i ] ; <S2SV_EndBug> i ++ ; j ++ ; } else if ( ( szLine [ i ] & 0xf0 ) == 0xe0 ) { <S2SV_StartBug> szLineConv [ j ] = szLine [ i ] ; <S2SV_EndBug> i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else if ( ( szLine [ i ] & 0xf8 ) == 0xf0 ) { <S2SV_StartBug> szLineConv [ j ] = szLine [ i ] ; <S2SV_EndBug> i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { i += 1 ; continue ; } } <S2SV_StartBug> szLineConv [ j ] = szLine [ i ] ; <S2SV_EndBug> j ++ ; } szLineConv [ j ] = 0 ; strcpy ( szLine , szLineConv ) ; return sOK ; } # ifdef GPAC_BIG_ENDIAN if ( unicode_type == 3 ) { # else if ( unicode_type == 2 ) { # endif i = 0 ; while ( 1 ) { char c ; if ( ! szLine [ i ] && ! szLine [ i + 1 ] ) break ; c = szLine [ i + 1 ] ; szLine [ i + 1 ] = szLine [ i ] ; szLine [ i ] = c ; i += 2 ; } } sptr = ( u16 * ) szLine ; i = ( u32 ) gf_utf8_wcstombs ( szLineConv , 1024 , ( const unsigned short * * ) & sptr ) ; if ( i >= ( u32 ) ARRAY_LENGTH ( szLineConv ) ) return NULL ; szLineConv [ i ] = 0 ; strcpy ( szLine , szLineConv ) ; if ( unicode_type == 3 ) fgetc ( txt_in ) ; return sOK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i < len && j < sizeof ( szLineConv ) - 1 ; i ++ , j <S2SV_ModEnd> ++ ) { <S2SV_ModStart> 0x80 ) { if ( j + 1 < sizeof ( szLineConv ) - 1 ) { <S2SV_ModStart> ; } else break ; } else <S2SV_ModStart> 0xc0 ) { if ( j + 1 < sizeof ( szLineConv ) - 1 && i + 1 < len ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { break ; } <S2SV_ModEnd> } else if <S2SV_ModStart> 0xe0 ) { if ( j + 2 < sizeof ( szLineConv ) - 1 && i + 2 < len ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { break ; } <S2SV_ModEnd> } else if <S2SV_ModStart> 0xf0 ) { if ( j + 3 < sizeof ( szLineConv ) - 1 && i + 3 < len ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { break ; } <S2SV_ModEnd> } else { <S2SV_ModStart> ; } } if ( j < sizeof ( szLineConv ) - 1 && i < len ) szLineConv [ j ] = szLine [ i ] ; } if ( j >= sizeof ( szLineConv ) ) szLineConv [ sizeof ( szLineConv ) - 1 ] = 0 ; else <S2SV_ModEnd> szLineConv [ j\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11048\n\n```\nCWE-125 <S2SV_StartBug> void rdp_read_flow_control_pdu ( wStream * s , UINT16 * type ) <S2SV_EndBug> { <S2SV_StartBug> UINT8 pduType ; <S2SV_EndBug> Stream_Read_UINT8 ( s , pduType ) ; * type = pduType ; Stream_Seek_UINT8 ( s ) ; Stream_Seek_UINT8 ( s ) ; Stream_Seek_UINT8 ( s ) ; Stream_Seek_UINT16 ( s ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> BOOL <S2SV_ModEnd> rdp_read_flow_control_pdu ( wStream <S2SV_ModStart> { UINT8 pduType ; if ( ! type ) return FALSE ; if ( Stream_GetRemainingLength ( s ) < 6 ) return FALSE <S2SV_ModStart> s ) ; return TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13039\n\n```\nCWE-125 static const u_char * <S2SV_StartBug> ikev1_attr_print ( netdissect_options * ndo , const u_char * p , const u_char * ep ) <S2SV_EndBug> { int totlen ; uint32_t t ; <S2SV_StartBug> if ( p [ 0 ] & 0x80 ) <S2SV_EndBug> totlen = 4 ; <S2SV_StartBug> else <S2SV_EndBug> totlen = 4 + EXTRACT_16BITS ( & p [ 2 ] ) ; <S2SV_StartBug> if ( ep < p + totlen ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[|attr]\" ) ) ; <S2SV_StartBug> return ep + 1 ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"(\" ) ) ; t = EXTRACT_16BITS ( & p [ 0 ] ) & 0x7fff ; ND_PRINT ( ( ndo , \"type=#%d<S2SV_blank>\" , t ) ) ; if ( p [ 0 ] & 0x80 ) { ND_PRINT ( ( ndo , \"value=\" ) ) ; t = p [ 2 ] ; <S2SV_StartBug> rawprint ( ndo , ( const uint8_t * ) & p [ 2 ] , 2 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> ND_PRINT ( ( ndo , \"len=%d<S2SV_blank>value=\" , EXTRACT_16BITS ( & p [ 2 ] ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> rawprint ( ndo , ( const uint8_t * ) & p [ 4 ] , EXTRACT_16BITS ( & p [ 2 ] ) ) ; <S2SV_EndBug> } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_StartBug> return p + totlen ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const u_char * ep2 <S2SV_ModEnd> ) { int <S2SV_ModStart> uint32_t t ; ND_TCHECK ( p [ 0 ] ) ; <S2SV_ModStart> 4 ; else { ND_TCHECK_16BITS ( & p [ 2 ] ) ; <S2SV_ModStart> ] ) ; } if ( ep2 <S2SV_ModEnd> < p + <S2SV_ModStart> ) ; return ep2 <S2SV_ModEnd> + 1 ; <S2SV_ModStart> 1 ; } ND_TCHECK_16BITS ( & p [ 0 ] ) ; <S2SV_ModStart> 2 ] ; if ( ! <S2SV_ModStart> , 2 ) ) { ND_PRINT ( ( ndo , \")\" ) ) ; goto trunc ; } <S2SV_ModEnd> } else { <S2SV_ModStart> , \"len=%d<S2SV_blank>value=\" , totlen - 4 ) ) ; if ( ! <S2SV_ModEnd> rawprint ( ndo <S2SV_ModStart> 4 ] , totlen - 4 ) ) { <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; goto trunc ; } } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_ModStart> + totlen ; trunc : return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int bmp_validate ( jas_stream_t * in ) { int n ; int i ; <S2SV_StartBug> uchar buf [ 2 ] ; <S2SV_EndBug> assert ( JAS_STREAM_MAXPUTBACK >= 2 ) ; if ( ( n = jas_stream_read ( in , ( char * ) buf , 2 ) ) < 0 ) { return - 1 ; } for ( i = n - 1 ; i >= 0 ; -- i ) { if ( jas_stream_ungetc ( in , buf [ i ] ) == EOF ) { return - 1 ; } } if ( n < 2 ) { return - 1 ; } if ( buf [ 0 ] == ( BMP_MAGIC & 0xff ) && buf [ 1 ] == ( BMP_MAGIC >> 8 ) ) { return 0 ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; jas_uchar <S2SV_ModEnd> buf [ 2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 STATIC int xfs_attr3_leaf_add_work ( struct xfs_buf * bp , struct xfs_attr3_icleaf_hdr * ichdr , struct xfs_da_args * args , int mapindex ) { struct xfs_attr_leafblock * leaf ; struct xfs_attr_leaf_entry * entry ; struct xfs_attr_leaf_name_local * name_loc ; struct xfs_attr_leaf_name_remote * name_rmt ; struct xfs_mount * mp ; int tmp ; int i ; trace_xfs_attr_leaf_add_work ( args ) ; leaf = bp -> b_addr ; ASSERT ( mapindex >= 0 && mapindex < XFS_ATTR_LEAF_MAPSIZE ) ; ASSERT ( args -> index >= 0 && args -> index <= ichdr -> count ) ; entry = & xfs_attr3_leaf_entryp ( leaf ) [ args -> index ] ; if ( args -> index < ichdr -> count ) { tmp = ichdr -> count - args -> index ; tmp *= sizeof ( xfs_attr_leaf_entry_t ) ; memmove ( entry + 1 , entry , tmp ) ; xfs_trans_log_buf ( args -> trans , bp , XFS_DA_LOGRANGE ( leaf , entry , tmp + sizeof ( * entry ) ) ) ; } ichdr -> count ++ ; mp = args -> trans -> t_mountp ; ASSERT ( ichdr -> freemap [ mapindex ] . base < XFS_LBSIZE ( mp ) ) ; ASSERT ( ( ichdr -> freemap [ mapindex ] . base & 0x3 ) == 0 ) ; ASSERT ( ichdr -> freemap [ mapindex ] . size >= xfs_attr_leaf_newentsize ( args -> namelen , args -> valuelen , mp -> m_sb . sb_blocksize , NULL ) ) ; ASSERT ( ichdr -> freemap [ mapindex ] . size < XFS_LBSIZE ( mp ) ) ; ASSERT ( ( ichdr -> freemap [ mapindex ] . size & 0x3 ) == 0 ) ; ichdr -> freemap [ mapindex ] . size -= xfs_attr_leaf_newentsize ( args -> namelen , args -> valuelen , mp -> m_sb . sb_blocksize , & tmp ) ; entry -> nameidx = cpu_to_be16 ( ichdr -> freemap [ mapindex ] . base + ichdr -> freemap [ mapindex ] . size ) ; entry -> hashval = cpu_to_be32 ( args -> hashval ) ; entry -> flags = tmp ? XFS_ATTR_LOCAL : 0 ; entry -> flags |= XFS_ATTR_NSP_ARGS_TO_ONDISK ( args -> flags ) ; if ( args -> op_flags & XFS_DA_OP_RENAME ) { entry -> flags |= XFS_ATTR_INCOMPLETE ; if ( ( args -> blkno2 == args -> blkno ) && ( args -> index2 <= args -> index ) ) { args -> index2 ++ ; } } xfs_trans_log_buf ( args -> trans , bp , XFS_DA_LOGRANGE ( leaf , entry , sizeof ( * entry ) ) ) ; ASSERT ( ( args -> index == 0 ) || ( be32_to_cpu ( entry -> hashval ) >= be32_to_cpu ( ( entry - 1 ) -> hashval ) ) ) ; ASSERT ( ( args -> index == ichdr -> count - 1 ) || ( be32_to_cpu ( entry -> hashval ) <= be32_to_cpu ( ( entry + 1 ) -> hashval ) ) ) ; if ( entry -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf , args -> index ) ; name_loc -> namelen = args -> namelen ; name_loc -> valuelen = cpu_to_be16 ( args -> valuelen ) ; memcpy ( ( char * ) name_loc -> nameval , args -> name , args -> namelen ) ; memcpy ( ( char * ) & name_loc -> nameval [ args -> namelen ] , args -> value , be16_to_cpu ( name_loc -> valuelen ) ) ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf , args -> index ) ; name_rmt -> namelen = args -> namelen ; memcpy ( ( char * ) name_rmt -> name , args -> name , args -> namelen ) ; entry -> flags |= XFS_ATTR_INCOMPLETE ; name_rmt -> valuelen = 0 ; name_rmt -> valueblk = 0 ; args -> rmtblkno = 1 ; args -> rmtblkcnt = xfs_attr3_rmt_blocks ( mp , args -> valuelen ) ; <S2SV_StartBug> } <S2SV_EndBug> xfs_trans_log_buf ( args -> trans , bp , XFS_DA_LOGRANGE ( leaf , xfs_attr3_leaf_name ( leaf , args -> index ) , xfs_attr_leaf_entsize ( leaf , args -> index ) ) ) ; if ( be16_to_cpu ( entry -> nameidx ) < ichdr -> firstused ) ichdr -> firstused = be16_to_cpu ( entry -> nameidx ) ; ASSERT ( ichdr -> firstused >= ichdr -> count * sizeof ( xfs_attr_leaf_entry_t ) + xfs_attr3_leaf_hdr_size ( leaf ) ) ; tmp = ( ichdr -> count - 1 ) * sizeof ( xfs_attr_leaf_entry_t ) + xfs_attr3_leaf_hdr_size ( leaf ) ; for ( i = 0 ; i < XFS_ATTR_LEAF_MAPSIZE ; i ++ ) { if ( ichdr -> freemap [ i ] . base == tmp ) { ichdr -> freemap [ i ] . base += sizeof ( xfs_attr_leaf_entry_t ) ; ichdr -> freemap [ i ] . size -= sizeof ( xfs_attr_leaf_entry_t ) ; } } ichdr -> usedbytes += xfs_attr_leaf_entsize ( leaf , args -> index ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> valuelen ) ; args -> rmtvaluelen = args -> valuelen ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7294\n\n```\nCWE-20 static void ikev2_parent_outI1_continue ( struct pluto_crypto_req_cont * pcrc , struct pluto_crypto_req * r , err_t ugh ) { struct ke_continuation * ke = ( struct ke_continuation * ) pcrc ; struct msg_digest * md = ke -> md ; struct state * const st = md -> st ; stf_status e ; DBG ( DBG_CONTROLMORE , DBG_log ( \"ikev2<S2SV_blank>parent<S2SV_blank>outI1:<S2SV_blank>calculated<S2SV_blank>ke+nonce,<S2SV_blank>sending<S2SV_blank>I1\" ) ) ; if ( st == NULL ) { loglog ( RC_LOG_SERIOUS , \"%s:<S2SV_blank>Request<S2SV_blank>was<S2SV_blank>disconnected<S2SV_blank>from<S2SV_blank>state\" , __FUNCTION__ ) ; if ( ke -> md ) release_md ( ke -> md ) ; return ; } passert ( ugh == NULL ) ; passert ( cur_state == NULL ) ; passert ( st != NULL ) ; passert ( st -> st_suspended_md == ke -> md ) ; set_suspended ( st , NULL ) ; set_cur_state ( st ) ; st -> st_calculating = FALSE ; e = ikev2_parent_outI1_tail ( pcrc , r ) ; if ( ke -> md != NULL ) { complete_v2_state_transition ( & ke -> md , e ) ; if ( ke -> md ) release_md ( ke -> md ) ; } reset_cur_state ( ) ; reset_globals ( ) ; <S2SV_StartBug> passert ( GLOBALS_ARE_RESET ( ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0540\n\n```\nCWE-119 UWORD32 ihevcd_cabac_decode_bypass_bins_egk ( cab_ctxt_t * ps_cabac , bitstrm_t * ps_bitstrm , WORD32 k ) { UWORD32 u4_sym ; WORD32 numones ; WORD32 bin ; ASSERT ( ( k >= 0 ) ) ; numones = k ; bin = 1 ; u4_sym = 0 ; <S2SV_StartBug> while ( bin ) <S2SV_EndBug> { IHEVCD_CABAC_DECODE_BYPASS_BIN ( bin , ps_cabac , ps_bitstrm ) ; u4_sym += bin << numones ++ ; } <S2SV_StartBug> numones -= 1 ; <S2SV_EndBug> numones = CLIP3 ( numones , 0 , 16 ) ; if ( numones ) { UWORD32 u4_suffix ; IHEVCD_CABAC_DECODE_BYPASS_BINS ( u4_suffix , ps_cabac , ps_bitstrm , numones ) ; u4_sym += u4_suffix ; } return ( u4_sym ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( bin && ( numones <= 16 ) <S2SV_ModStart> numones -= 1 <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 void Con_Dump_f ( void ) { int l , x , i ; short * line ; fileHandle_t f ; int bufferlen ; char * buffer ; char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { Com_Printf ( \"usage:<S2SV_blank>condump<S2SV_blank><filename>\\\\n\" ) ; return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; <S2SV_StartBug> COM_DefaultExtension ( filename , sizeof ( filename ) , \".txt\" ) ; <S2SV_EndBug> f = FS_FOpenFileWrite ( filename ) ; if ( ! f ) { Com_Printf ( \"ERROR:<S2SV_blank>couldn\\'t<S2SV_blank>open<S2SV_blank>%s.\\\\n\" , filename ) ; return ; } Com_Printf ( \"Dumped<S2SV_blank>console<S2SV_blank>text<S2SV_blank>to<S2SV_blank>%s.\\\\n\" , filename ) ; for ( l = con . current - con . totallines + 1 ; l <= con . current ; l ++ ) { line = con . text + ( l % con . totallines ) * con . linewidth ; for ( x = 0 ; x < con . linewidth ; x ++ ) if ( ( line [ x ] & 0xff ) != '<S2SV_blank>' ) { break ; } if ( x != con . linewidth ) { break ; } } # ifdef _WIN32 bufferlen = con . linewidth + 3 * sizeof ( char ) ; # else bufferlen = con . linewidth + 2 * sizeof ( char ) ; # endif buffer = Hunk_AllocateTempMemory ( bufferlen ) ; buffer [ bufferlen - 1 ] = 0 ; for ( ; l <= con . current ; l ++ ) { line = con . text + ( l % con . totallines ) * con . linewidth ; for ( i = 0 ; i < con . linewidth ; i ++ ) buffer [ i ] = line [ i ] & 0xff ; for ( x = con . linewidth - 1 ; x >= 0 ; x -- ) { if ( buffer [ x ] == '<S2SV_blank>' ) { buffer [ x ] = 0 ; } else { break ; } } # ifdef _WIN32 Q_strcat ( buffer , bufferlen , \"\\\\r\\\\n\" ) ; # else Q_strcat ( buffer , bufferlen , \"\\\\n\" ) ; # endif FS_Write ( buffer , strlen ( buffer ) , f ) ; } Hunk_FreeTempMemory ( buffer ) ; FS_FCloseFile ( f ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \".txt\" ) ; if ( ! COM_CompareExtension ( filename , \".txt\" ) ) { Com_Printf ( \"Con_Dump_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".txt\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12996\n\n```\nCWE-125 static void pimv2_print ( netdissect_options * ndo , register const u_char * bp , register u_int len , const u_char * bp2 ) { register const u_char * ep ; register const struct pim * pim = ( const struct pim * ) bp ; int advance ; enum checksum_status cksum_status ; ep = ( const u_char * ) ndo -> ndo_snapend ; if ( bp >= ep ) return ; if ( ep > bp + len ) ep = bp + len ; ND_TCHECK ( pim -> pim_rsv ) ; pimv2_addr_len = pim -> pim_rsv ; if ( pimv2_addr_len != 0 ) ND_PRINT ( ( ndo , \",<S2SV_blank>RFC2117-encoding\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>cksum<S2SV_blank>0x%04x<S2SV_blank>\" , EXTRACT_16BITS ( & pim -> pim_cksum ) ) ) ; if ( EXTRACT_16BITS ( & pim -> pim_cksum ) == 0 ) { ND_PRINT ( ( ndo , \"(unverified)\" ) ) ; } else { if ( PIM_TYPE ( pim -> pim_typever ) == PIMV2_TYPE_REGISTER ) { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , 8 ) ; if ( cksum_status == INCORRECT ) { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , len ) ; } } else { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , len ) ; } switch ( cksum_status ) { case CORRECT : ND_PRINT ( ( ndo , \"(correct)\" ) ) ; break ; case INCORRECT : ND_PRINT ( ( ndo , \"(incorrect)\" ) ) ; break ; case UNVERIFIED : ND_PRINT ( ( ndo , \"(unverified)\" ) ) ; break ; } } switch ( PIM_TYPE ( pim -> pim_typever ) ) { case PIMV2_TYPE_HELLO : { uint16_t otype , olen ; bp += 4 ; while ( bp < ep ) { ND_TCHECK2 ( bp [ 0 ] , 4 ) ; otype = EXTRACT_16BITS ( & bp [ 0 ] ) ; olen = EXTRACT_16BITS ( & bp [ 2 ] ) ; ND_TCHECK2 ( bp [ 0 ] , 4 + olen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>Value:<S2SV_blank>\" , tok2str ( pimv2_hello_option_values , \"Unknown\" , otype ) , otype , olen ) ) ; bp += 4 ; switch ( otype ) { case PIMV2_HELLO_OPTION_HOLDTIME : <S2SV_StartBug> unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; <S2SV_EndBug> break ; case PIMV2_HELLO_OPTION_LANPRUNEDELAY : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { char t_bit ; uint16_t lan_delay , override_interval ; lan_delay = EXTRACT_16BITS ( bp ) ; override_interval = EXTRACT_16BITS ( bp + 2 ) ; t_bit = ( lan_delay & 0x8000 ) ? 1 : 0 ; lan_delay &= ~ 0x8000 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>T-bit=%d,<S2SV_blank>LAN<S2SV_blank>delay<S2SV_blank>%dms,<S2SV_blank>Override<S2SV_blank>interval<S2SV_blank>%dms\" , t_bit , lan_delay , override_interval ) ) ; } break ; case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD : case PIMV2_HELLO_OPTION_DR_PRIORITY : switch ( olen ) { case 0 : ND_PRINT ( ( ndo , \"Bi-Directional<S2SV_blank>Capability<S2SV_blank>(Old)\" ) ) ; break ; case 4 : ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( bp ) ) ) ; break ; default : ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; break ; } break ; case PIMV2_HELLO_OPTION_GENID : <S2SV_StartBug> ND_PRINT ( ( ndo , \"0x%08x\" , EXTRACT_32BITS ( bp ) ) ) ; <S2SV_EndBug> break ; case PIMV2_HELLO_OPTION_REFRESH_CAP : <S2SV_StartBug> ND_PRINT ( ( ndo , \"v%d\" , * bp ) ) ; <S2SV_EndBug> if ( * ( bp + 1 ) != 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>interval<S2SV_blank>\" ) ) ; unsigned_relts_print ( ndo , * ( bp + 1 ) ) ; } if ( EXTRACT_16BITS ( bp + 2 ) != 0 ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>?0x%04x?\" , EXTRACT_16BITS ( bp + 2 ) ) ) ; <S2SV_EndBug> } break ; case PIMV2_HELLO_OPTION_BIDIR_CAP : break ; case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD : case PIMV2_HELLO_OPTION_ADDRESS_LIST : if ( ndo -> ndo_vflag > 1 ) { const u_char * ptr = bp ; while ( ptr < ( bp + olen ) ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; advance = pimv2_addr_print ( ndo , ptr , pimv2_unicast , 0 ) ; if ( advance < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } ptr += advance ; } } break ; default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , olen ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , olen ) ; bp += olen ; } break ; } case PIMV2_TYPE_REGISTER : { const struct ip * ip ; ND_TCHECK2 ( * ( bp + 4 ) , PIMV2_REGISTER_FLAG_LEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[<S2SV_blank>%s<S2SV_blank>]\\\\n\\\\t\" , tok2str ( pimv2_register_flag_values , \"none\" , EXTRACT_32BITS ( bp + 4 ) ) ) ) ; bp += 8 ; len -= 8 ; ip = ( const struct ip * ) bp ; switch ( IP_V ( ip ) ) { case 0 : ND_PRINT ( ( ndo , \"IP-Null-header<S2SV_blank>%s<S2SV_blank>><S2SV_blank>%s\" , ipaddr_string ( ndo , & ip -> ip_src ) , ipaddr_string ( ndo , & ip -> ip_dst ) ) ) ; break ; case 4 : ip_print ( ndo , bp , len ) ; break ; case 6 : ip6_print ( ndo , bp , len ) ; break ; default : ND_PRINT ( ( ndo , \"IP<S2SV_blank>ver<S2SV_blank>%d\" , IP_V ( ip ) ) ) ; break ; } break ; } case PIMV2_TYPE_REGISTER_STOP : bp += 4 ; len -= 4 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>group=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>source=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; break ; case PIMV2_TYPE_JOIN_PRUNE : case PIMV2_TYPE_GRAFT : case PIMV2_TYPE_GRAFT_ACK : { uint8_t ngroup ; uint16_t holdtime ; uint16_t njoin ; uint16_t nprune ; int i , j ; bp += 4 ; len -= 4 ; if ( PIM_TYPE ( pim -> pim_typever ) != 7 ) { if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \",<S2SV_blank>upstream-neighbor:<S2SV_blank>\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; } if ( bp + 4 > ep ) break ; ngroup = bp [ 1 ] ; holdtime = EXTRACT_16BITS ( & bp [ 2 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%u<S2SV_blank>group(s)\" , ngroup ) ) ; if ( PIM_TYPE ( pim -> pim_typever ) != 7 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>holdtime:<S2SV_blank>\" ) ) ; if ( holdtime == 0xffff ) ND_PRINT ( ( ndo , \"infinite\" ) ) ; else unsigned_relts_print ( ndo , holdtime ) ; } bp += 4 ; len -= 4 ; for ( i = 0 ; i < ngroup ; i ++ ) { if ( bp >= ep ) goto jp_done ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>group<S2SV_blank>#%u:<S2SV_blank>\" , i + 1 ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; if ( bp + 4 > ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } njoin = EXTRACT_16BITS ( & bp [ 0 ] ) ; nprune = EXTRACT_16BITS ( & bp [ 2 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>joined<S2SV_blank>sources:<S2SV_blank>%u,<S2SV_blank>pruned<S2SV_blank>sources:<S2SV_blank>%u\" , njoin , nprune ) ) ; bp += 4 ; len -= 4 ; for ( j = 0 ; j < njoin ; j ++ ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>joined<S2SV_blank>source<S2SV_blank>#%u:<S2SV_blank>\" , j + 1 ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_source , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; } for ( j = 0 ; j < nprune ; j ++ ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>pruned<S2SV_blank>source<S2SV_blank>#%u:<S2SV_blank>\" , j + 1 ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_source , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; } } jp_done : break ; } case PIMV2_TYPE_BOOTSTRAP : { int i , j , frpcnt ; bp += 4 ; if ( bp + sizeof ( uint16_t ) >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>tag=%x\" , EXTRACT_16BITS ( bp ) ) ) ; bp += sizeof ( uint16_t ) ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>hashmlen=%d\" , bp [ 0 ] ) ) ; if ( bp + 1 >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>BSRprio=%d\" , bp [ 1 ] ) ) ; bp += 2 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>BSR=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; for ( i = 0 ; bp < ep ; i ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(group%d:<S2SV_blank>\" , i ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } bp += advance ; if ( bp >= ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \"<S2SV_blank>RPcnt=%d\" , bp [ 0 ] ) ) ; if ( bp + 1 >= ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \"<S2SV_blank>FRPcnt=%d\" , frpcnt = bp [ 1 ] ) ) ; bp += 4 ; for ( j = 0 ; j < frpcnt && bp < ep ; j ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>RP%d=\" , j ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } bp += advance ; if ( bp + 1 >= ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \",holdtime=\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; if ( bp + 2 >= ep ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \",prio=%d\" , bp [ 2 ] ) ) ; bp += 4 ; } ND_PRINT ( ( ndo , \")\" ) ) ; } bs_done : break ; } case PIMV2_TYPE_ASSERT : bp += 4 ; len -= 4 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>group=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>src=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; if ( bp + 8 > ep ) break ; if ( bp [ 0 ] & 0x80 ) ND_PRINT ( ( ndo , \"<S2SV_blank>RPT\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pref=%u\" , EXTRACT_32BITS ( & bp [ 0 ] ) & 0x7fffffff ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>metric=%u\" , EXTRACT_32BITS ( & bp [ 4 ] ) ) ) ; break ; case PIMV2_TYPE_CANDIDATE_RP : { int i , pfxcnt ; bp += 4 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>prefix-cnt=%d\" , bp [ 0 ] ) ) ; pfxcnt = bp [ 0 ] ; if ( bp + 1 >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>prio=%d\" , bp [ 1 ] ) ) ; if ( bp + 3 >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>holdtime=\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( & bp [ 2 ] ) ) ; bp += 4 ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>RP=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; for ( i = 0 ; i < pfxcnt && bp < ep ; i ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>Group%d=\" , i ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; } break ; } case PIMV2_TYPE_PRUNE_REFRESH : ND_PRINT ( ( ndo , \"<S2SV_blank>src=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; ND_PRINT ( ( ndo , \"<S2SV_blank>grp=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; ND_PRINT ( ( ndo , \"<S2SV_blank>forwarder=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; ND_TCHECK2 ( bp [ 0 ] , 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>TUNR<S2SV_blank>\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>[type<S2SV_blank>%d]\" , PIM_TYPE ( pim -> pim_typever ) ) ) ; break ; } return ; trunc : ND_PRINT ( ( ndo , \"[|pim]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case PIMV2_HELLO_OPTION_HOLDTIME : if ( olen != 2 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>2<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { <S2SV_ModStart> ) ) ; } <S2SV_ModStart> case PIMV2_HELLO_OPTION_GENID : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { <S2SV_ModStart> ) ) ; } <S2SV_ModStart> case PIMV2_HELLO_OPTION_REFRESH_CAP : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18216\n\n```\nCWE-476 static struct o2nm_cluster * to_o2nm_cluster_from_node ( struct o2nm_node * node ) { <S2SV_StartBug> return to_o2nm_cluster ( node -> nd_item . ci_parent -> ci_parent ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> node ) { if ( node -> nd_item . ci_parent ) <S2SV_ModStart> ci_parent ) ; else return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15822\n\n```\nCWE-617 static int flv_write_packet ( AVFormatContext * s , AVPacket * pkt ) { AVIOContext * pb = s -> pb ; AVCodecParameters * par = s -> streams [ pkt -> stream_index ] -> codecpar ; FLVContext * flv = s -> priv_data ; FLVStreamContext * sc = s -> streams [ pkt -> stream_index ] -> priv_data ; unsigned ts ; int size = pkt -> size ; uint8_t * data = NULL ; int flags = - 1 , flags_size , ret ; <S2SV_StartBug> int64_t cur_offset = avio_tell ( pb ) ; <S2SV_EndBug> if ( par -> codec_id == AV_CODEC_ID_VP6F || par -> codec_id == AV_CODEC_ID_VP6A || par -> codec_id == AV_CODEC_ID_VP6 || par -> codec_id == AV_CODEC_ID_AAC ) flags_size = 2 ; else if ( par -> codec_id == AV_CODEC_ID_H264 || par -> codec_id == AV_CODEC_ID_MPEG4 ) flags_size = 5 ; else flags_size = 1 ; if ( par -> codec_id == AV_CODEC_ID_AAC || par -> codec_id == AV_CODEC_ID_H264 || par -> codec_id == AV_CODEC_ID_MPEG4 ) { int side_size = 0 ; uint8_t * side = av_packet_get_side_data ( pkt , AV_PKT_DATA_NEW_EXTRADATA , & side_size ) ; if ( side && side_size > 0 && ( side_size != par -> extradata_size || memcmp ( side , par -> extradata , side_size ) ) ) { av_free ( par -> extradata ) ; par -> extradata = av_mallocz ( side_size + AV_INPUT_BUFFER_PADDING_SIZE ) ; if ( ! par -> extradata ) { par -> extradata_size = 0 ; return AVERROR ( ENOMEM ) ; } memcpy ( par -> extradata , side , side_size ) ; par -> extradata_size = side_size ; flv_write_codec_header ( s , par , pkt -> dts ) ; } } if ( flv -> delay == AV_NOPTS_VALUE ) flv -> delay = - pkt -> dts ; if ( pkt -> dts < - flv -> delay ) { av_log ( s , AV_LOG_WARNING , \"Packets<S2SV_blank>are<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>proper<S2SV_blank>order<S2SV_blank>with<S2SV_blank>respect<S2SV_blank>to<S2SV_blank>DTS\\\\n\" ) ; return AVERROR ( EINVAL ) ; } ts = pkt -> dts ; if ( s -> event_flags & AVSTREAM_EVENT_FLAG_METADATA_UPDATED ) { write_metadata ( s , ts ) ; s -> event_flags &= ~ AVSTREAM_EVENT_FLAG_METADATA_UPDATED ; } avio_write_marker ( pb , av_rescale ( ts , AV_TIME_BASE , 1000 ) , pkt -> flags & AV_PKT_FLAG_KEY && ( flv -> video_par ? par -> codec_type == AVMEDIA_TYPE_VIDEO : 1 ) ? AVIO_DATA_MARKER_SYNC_POINT : AVIO_DATA_MARKER_BOUNDARY_POINT ) ; switch ( par -> codec_type ) { case AVMEDIA_TYPE_VIDEO : avio_w8 ( pb , FLV_TAG_TYPE_VIDEO ) ; flags = ff_codec_get_tag ( flv_video_codec_ids , par -> codec_id ) ; flags |= pkt -> flags & AV_PKT_FLAG_KEY ? FLV_FRAME_KEY : FLV_FRAME_INTER ; break ; case AVMEDIA_TYPE_AUDIO : flags = get_audio_flags ( s , par ) ; av_assert0 ( size ) ; avio_w8 ( pb , FLV_TAG_TYPE_AUDIO ) ; break ; case AVMEDIA_TYPE_SUBTITLE : case AVMEDIA_TYPE_DATA : avio_w8 ( pb , FLV_TAG_TYPE_META ) ; break ; default : return AVERROR ( EINVAL ) ; } if ( par -> codec_id == AV_CODEC_ID_H264 || par -> codec_id == AV_CODEC_ID_MPEG4 ) { if ( par -> extradata_size > 0 && * ( uint8_t * ) par -> extradata != 1 ) if ( ( ret = ff_avc_parse_nal_units_buf ( pkt -> data , & data , & size ) ) < 0 ) return ret ; } else if ( par -> codec_id == AV_CODEC_ID_AAC && pkt -> size > 2 && ( AV_RB16 ( pkt -> data ) & 0xfff0 ) == 0xfff0 ) { if ( ! s -> streams [ pkt -> stream_index ] -> nb_frames ) { av_log ( s , AV_LOG_ERROR , \"Malformed<S2SV_blank>AAC<S2SV_blank>bitstream<S2SV_blank>detected:<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>audio<S2SV_blank>bitstream<S2SV_blank>filter<S2SV_blank>\\'aac_adtstoasc\\'<S2SV_blank>to<S2SV_blank>fix<S2SV_blank>it<S2SV_blank>\" \"(\\'-bsf:a<S2SV_blank>aac_adtstoasc\\'<S2SV_blank>option<S2SV_blank>with<S2SV_blank>ffmpeg)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } av_log ( s , AV_LOG_WARNING , \"aac<S2SV_blank>bitstream<S2SV_blank>error\\\\n\" ) ; } if ( par -> codec_id == AV_CODEC_ID_SPEEX && ts - sc -> last_ts > 160 ) av_log ( s , AV_LOG_WARNING , \"Warning:<S2SV_blank>Speex<S2SV_blank>stream<S2SV_blank>has<S2SV_blank>more<S2SV_blank>than<S2SV_blank>\" \"8<S2SV_blank>frames<S2SV_blank>per<S2SV_blank>packet.<S2SV_blank>Adobe<S2SV_blank>Flash<S2SV_blank>\" \"Player<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>this!\\\\n\" ) ; if ( sc -> last_ts < ts ) sc -> last_ts = ts ; if ( size + flags_size >= 1 << 24 ) { av_log ( s , AV_LOG_ERROR , \"Too<S2SV_blank>large<S2SV_blank>packet<S2SV_blank>with<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>>=<S2SV_blank>%u\\\\n\" , size + flags_size , 1 << 24 ) ; return AVERROR ( EINVAL ) ; } avio_wb24 ( pb , size + flags_size ) ; put_timestamp ( pb , ts ) ; avio_wb24 ( pb , flv -> reserved ) ; if ( par -> codec_type == AVMEDIA_TYPE_DATA || par -> codec_type == AVMEDIA_TYPE_SUBTITLE ) { int data_size ; int64_t metadata_size_pos = avio_tell ( pb ) ; if ( par -> codec_id == AV_CODEC_ID_TEXT ) { avio_w8 ( pb , AMF_DATA_TYPE_STRING ) ; put_amf_string ( pb , \"onTextData\" ) ; avio_w8 ( pb , AMF_DATA_TYPE_MIXEDARRAY ) ; avio_wb32 ( pb , 2 ) ; put_amf_string ( pb , \"type\" ) ; avio_w8 ( pb , AMF_DATA_TYPE_STRING ) ; put_amf_string ( pb , \"Text\" ) ; put_amf_string ( pb , \"text\" ) ; avio_w8 ( pb , AMF_DATA_TYPE_STRING ) ; put_amf_string ( pb , pkt -> data ) ; put_amf_string ( pb , \"\" ) ; avio_w8 ( pb , AMF_END_OF_OBJECT ) ; } else { avio_write ( pb , data ? data : pkt -> data , size ) ; } data_size = avio_tell ( pb ) - metadata_size_pos ; avio_seek ( pb , metadata_size_pos - 10 , SEEK_SET ) ; avio_wb24 ( pb , data_size ) ; avio_seek ( pb , data_size + 10 - 3 , SEEK_CUR ) ; avio_wb32 ( pb , data_size + 11 ) ; } else { av_assert1 ( flags >= 0 ) ; avio_w8 ( pb , flags ) ; if ( par -> codec_id == AV_CODEC_ID_VP6 ) avio_w8 ( pb , 0 ) ; if ( par -> codec_id == AV_CODEC_ID_VP6F || par -> codec_id == AV_CODEC_ID_VP6A ) { if ( par -> extradata_size ) avio_w8 ( pb , par -> extradata [ 0 ] ) ; else avio_w8 ( pb , ( ( FFALIGN ( par -> width , 16 ) - par -> width ) << 4 ) | ( FFALIGN ( par -> height , 16 ) - par -> height ) ) ; } else if ( par -> codec_id == AV_CODEC_ID_AAC ) avio_w8 ( pb , 1 ) ; else if ( par -> codec_id == AV_CODEC_ID_H264 || par -> codec_id == AV_CODEC_ID_MPEG4 ) { avio_w8 ( pb , 1 ) ; avio_wb24 ( pb , pkt -> pts - pkt -> dts ) ; } avio_write ( pb , data ? data : pkt -> data , size ) ; avio_wb32 ( pb , size + flags_size + 11 ) ; flv -> duration = FFMAX ( flv -> duration , pkt -> pts + flv -> delay + pkt -> duration ) ; } if ( flv -> flags & FLV_ADD_KEYFRAME_INDEX ) { switch ( par -> codec_type ) { case AVMEDIA_TYPE_VIDEO : flv -> videosize += ( avio_tell ( pb ) - cur_offset ) ; flv -> lasttimestamp = flv -> acurframeindex / flv -> framerate ; if ( pkt -> flags & AV_PKT_FLAG_KEY ) { double ts = flv -> acurframeindex / flv -> framerate ; int64_t pos = cur_offset ; flv -> lastkeyframetimestamp = flv -> acurframeindex / flv -> framerate ; flv -> lastkeyframelocation = pos ; flv_append_keyframe_info ( s , flv , ts , pos ) ; } flv -> acurframeindex ++ ; break ; case AVMEDIA_TYPE_AUDIO : flv -> audiosize += ( avio_tell ( pb ) - cur_offset ) ; break ; default : av_log ( s , AV_LOG_WARNING , \"par->codec_type<S2SV_blank>is<S2SV_blank>type<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , par -> codec_type ) ; break ; } } av_free ( data ) ; return pb -> error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pb ) ; if ( par -> codec_type == AVMEDIA_TYPE_AUDIO && ! pkt -> size ) { av_log ( s , AV_LOG_WARNING , \"Empty<S2SV_blank>audio<S2SV_blank>Packet\\\\n\" ) ; return AVERROR ( EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10094\n\n```\nCWE-189 tsize_t t2p_readwrite_pdf_image_tile ( T2P * t2p , TIFF * input , TIFF * output , ttile_t tile ) { uint16 edge = 0 ; tsize_t written = 0 ; unsigned char * buffer = NULL ; tsize_t bufferoffset = 0 ; unsigned char * samplebuffer = NULL ; tsize_t samplebufferoffset = 0 ; tsize_t read = 0 ; uint16 i = 0 ; ttile_t tilecount = 0 ; ttile_t septilecount = 0 ; tsize_t septilesize = 0 ; # ifdef JPEG_SUPPORT unsigned char * jpt ; float * xfloatp ; uint32 xuint32 = 0 ; # endif if ( t2p -> t2p_error != T2P_ERR_OK ) return ( 0 ) ; edge |= t2p_tile_is_right_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) ; edge |= t2p_tile_is_bottom_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) ; if ( ( t2p -> pdf_transcode == T2P_TRANSCODE_RAW ) && ( ( edge == 0 ) # if defined ( JPEG_SUPPORT ) || defined ( OJPEG_SUPPORT ) || ( t2p -> pdf_compression == T2P_COMPRESS_JPEG ) # endif ) ) { # ifdef CCITT_SUPPORT if ( t2p -> pdf_compression == T2P_COMPRESS_G4 ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } TIFFReadRawTile ( input , tile , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; if ( t2p -> tiff_fillorder == FILLORDER_LSB2MSB ) { TIFFReverseBits ( buffer , t2p -> tiff_datasize ) ; } t2pWriteFile ( output , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; _TIFFfree ( buffer ) ; return ( t2p -> tiff_datasize ) ; } # endif # ifdef ZIP_SUPPORT if ( t2p -> pdf_compression == T2P_COMPRESS_ZIP ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } TIFFReadRawTile ( input , tile , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; if ( t2p -> tiff_fillorder == FILLORDER_LSB2MSB ) { TIFFReverseBits ( buffer , t2p -> tiff_datasize ) ; } t2pWriteFile ( output , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; _TIFFfree ( buffer ) ; return ( t2p -> tiff_datasize ) ; } # endif # ifdef OJPEG_SUPPORT if ( t2p -> tiff_compression == COMPRESSION_OJPEG ) { if ( ! t2p -> pdf_ojpegdata ) { TIFFError ( TIFF2PDF_MODULE , \"No<S2SV_blank>support<S2SV_blank>for<S2SV_blank>OJPEG<S2SV_blank>image<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>\" \"bad<S2SV_blank>tables\" , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } _TIFFmemcpy ( buffer , t2p -> pdf_ojpegdata , t2p -> pdf_ojpegdatalength ) ; if ( edge != 0 ) { if ( t2p_tile_is_bottom_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) ) { buffer [ 7 ] = ( t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilelength >> 8 ) & 0xff ; buffer [ 8 ] = ( t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilelength ) & 0xff ; } if ( t2p_tile_is_right_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) ) { buffer [ 9 ] = ( t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilewidth >> 8 ) & 0xff ; buffer [ 10 ] = ( t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilewidth ) & 0xff ; } } bufferoffset = t2p -> pdf_ojpegdatalength ; bufferoffset += TIFFReadRawTile ( input , tile , ( tdata_t ) & ( ( ( unsigned char * ) buffer ) [ bufferoffset ] ) , - 1 ) ; ( ( unsigned char * ) buffer ) [ bufferoffset ++ ] = 0xff ; ( ( unsigned char * ) buffer ) [ bufferoffset ++ ] = 0xd9 ; t2pWriteFile ( output , ( tdata_t ) buffer , bufferoffset ) ; _TIFFfree ( buffer ) ; return ( bufferoffset ) ; } # endif # ifdef JPEG_SUPPORT if ( t2p -> tiff_compression == COMPRESSION_JPEG ) { unsigned char table_end [ 2 ] ; uint32 count = 0 ; buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>\" TIFF_SIZE_FORMAT \"<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( TIFF_SIZE_T ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } if ( TIFFGetField ( input , TIFFTAG_JPEGTABLES , & count , & jpt ) != 0 ) { <S2SV_StartBug> if ( count >= 4 ) { <S2SV_EndBug> int retTIFFReadRawTile ; _TIFFmemcpy ( buffer , jpt , count - 2 ) ; bufferoffset += count - 2 ; table_end [ 0 ] = buffer [ bufferoffset - 2 ] ; table_end [ 1 ] = buffer [ bufferoffset - 1 ] ; xuint32 = bufferoffset ; bufferoffset -= 2 ; retTIFFReadRawTile = TIFFReadRawTile ( input , tile , ( tdata_t ) & ( ( ( unsigned char * ) buffer ) [ bufferoffset ] ) , - 1 ) ; if ( retTIFFReadRawTile < 0 ) { _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } bufferoffset += retTIFFReadRawTile ; buffer [ xuint32 - 2 ] = table_end [ 0 ] ; buffer [ xuint32 - 1 ] = table_end [ 1 ] ; } } t2pWriteFile ( output , ( tdata_t ) buffer , bufferoffset ) ; _TIFFfree ( buffer ) ; return ( bufferoffset ) ; } # endif ( void ) 0 ; } if ( t2p -> pdf_sample == T2P_SAMPLE_NOTHING ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>\" \"t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } read = TIFFReadEncodedTile ( input , tile , ( tdata_t ) & buffer [ bufferoffset ] , t2p -> tiff_datasize ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>tile<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , tile , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } } else { if ( t2p -> pdf_sample == T2P_SAMPLE_PLANAR_SEPARATE_TO_CONTIG ) { septilesize = TIFFTileSize ( input ) ; septilecount = TIFFNumberOfTiles ( input ) ; tilecount = septilecount / t2p -> tiff_samplesperpixel ; buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } samplebuffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( samplebuffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } samplebufferoffset = 0 ; for ( i = 0 ; i < t2p -> tiff_samplesperpixel ; i ++ ) { read = TIFFReadEncodedTile ( input , tile + i * tilecount , ( tdata_t ) & ( samplebuffer [ samplebufferoffset ] ) , septilesize ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>tile<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , tile + i * tilecount , TIFFFileName ( input ) ) ; _TIFFfree ( samplebuffer ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } samplebufferoffset += read ; } t2p_sample_planar_separate_to_contig ( t2p , & ( buffer [ bufferoffset ] ) , samplebuffer , samplebufferoffset ) ; bufferoffset += samplebufferoffset ; _TIFFfree ( samplebuffer ) ; } if ( buffer == NULL ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } read = TIFFReadEncodedTile ( input , tile , ( tdata_t ) & buffer [ bufferoffset ] , t2p -> tiff_datasize ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>tile<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , tile , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } } if ( t2p -> pdf_sample & T2P_SAMPLE_RGBA_TO_RGB ) { t2p -> tiff_datasize = t2p_sample_rgba_to_rgb ( ( tdata_t ) buffer , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth * t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_RGBAA_TO_RGB ) { t2p -> tiff_datasize = t2p_sample_rgbaa_to_rgb ( ( tdata_t ) buffer , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth * t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_YCBCR_TO_RGB ) { TIFFError ( TIFF2PDF_MODULE , \"No<S2SV_blank>support<S2SV_blank>for<S2SV_blank>YCbCr<S2SV_blank>to<S2SV_blank>RGB<S2SV_blank>in<S2SV_blank>tile<S2SV_blank>for<S2SV_blank>%s\" , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_LAB_SIGNED_TO_UNSIGNED ) { t2p -> tiff_datasize = t2p_sample_lab_signed_to_unsigned ( ( tdata_t ) buffer , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth * t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } } if ( t2p_tile_is_right_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) != 0 ) { t2p_tile_collapse_left ( buffer , TIFFTileRowSize ( input ) , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilewidth , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } t2p_disable ( output ) ; TIFFSetField ( output , TIFFTAG_PHOTOMETRIC , t2p -> tiff_photometric ) ; TIFFSetField ( output , TIFFTAG_BITSPERSAMPLE , t2p -> tiff_bitspersample ) ; TIFFSetField ( output , TIFFTAG_SAMPLESPERPIXEL , t2p -> tiff_samplesperpixel ) ; if ( t2p_tile_is_right_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) == 0 ) { TIFFSetField ( output , TIFFTAG_IMAGEWIDTH , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth ) ; } else { TIFFSetField ( output , TIFFTAG_IMAGEWIDTH , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilewidth ) ; } if ( t2p_tile_is_bottom_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) == 0 ) { TIFFSetField ( output , TIFFTAG_IMAGELENGTH , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; TIFFSetField ( output , TIFFTAG_ROWSPERSTRIP , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } else { TIFFSetField ( output , TIFFTAG_IMAGELENGTH , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilelength ) ; TIFFSetField ( output , TIFFTAG_ROWSPERSTRIP , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilelength ) ; } TIFFSetField ( output , TIFFTAG_PLANARCONFIG , PLANARCONFIG_CONTIG ) ; TIFFSetField ( output , TIFFTAG_FILLORDER , FILLORDER_MSB2LSB ) ; switch ( t2p -> pdf_compression ) { case T2P_COMPRESS_NONE : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_NONE ) ; break ; # ifdef CCITT_SUPPORT case T2P_COMPRESS_G4 : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_CCITTFAX4 ) ; break ; # endif # ifdef JPEG_SUPPORT case T2P_COMPRESS_JPEG : if ( t2p -> tiff_photometric == PHOTOMETRIC_YCBCR ) { uint16 hor = 0 , ver = 0 ; if ( TIFFGetField ( input , TIFFTAG_YCBCRSUBSAMPLING , & hor , & ver ) != 0 ) { if ( hor != 0 && ver != 0 ) { TIFFSetField ( output , TIFFTAG_YCBCRSUBSAMPLING , hor , ver ) ; } } if ( TIFFGetField ( input , TIFFTAG_REFERENCEBLACKWHITE , & xfloatp ) != 0 ) { TIFFSetField ( output , TIFFTAG_REFERENCEBLACKWHITE , xfloatp ) ; } } TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_JPEG ) ; TIFFSetField ( output , TIFFTAG_JPEGTABLESMODE , 0 ) ; if ( t2p -> pdf_colorspace & ( T2P_CS_RGB | T2P_CS_LAB ) ) { TIFFSetField ( output , TIFFTAG_PHOTOMETRIC , PHOTOMETRIC_YCBCR ) ; if ( t2p -> tiff_photometric != PHOTOMETRIC_YCBCR ) { TIFFSetField ( output , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RGB ) ; } else { TIFFSetField ( output , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RAW ) ; } } if ( t2p -> pdf_colorspace & T2P_CS_GRAY ) { ( void ) 0 ; } if ( t2p -> pdf_colorspace & T2P_CS_CMYK ) { ( void ) 0 ; } if ( t2p -> pdf_defaultcompressionquality != 0 ) { TIFFSetField ( output , TIFFTAG_JPEGQUALITY , t2p -> pdf_defaultcompressionquality ) ; } break ; # endif # ifdef ZIP_SUPPORT case T2P_COMPRESS_ZIP : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_DEFLATE ) ; if ( t2p -> pdf_defaultcompressionquality % 100 != 0 ) { TIFFSetField ( output , TIFFTAG_PREDICTOR , t2p -> pdf_defaultcompressionquality % 100 ) ; } if ( t2p -> pdf_defaultcompressionquality / 100 != 0 ) { TIFFSetField ( output , TIFFTAG_ZIPQUALITY , ( t2p -> pdf_defaultcompressionquality / 100 ) ) ; } break ; # endif default : break ; } t2p_enable ( output ) ; t2p -> outputwritten = 0 ; bufferoffset = TIFFWriteEncodedStrip ( output , ( tstrip_t ) 0 , buffer , TIFFStripSize ( output ) ) ; if ( buffer != NULL ) { _TIFFfree ( buffer ) ; buffer = NULL ; } if ( bufferoffset == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>writing<S2SV_blank>encoded<S2SV_blank>tile<S2SV_blank>to<S2SV_blank>output<S2SV_blank>PDF<S2SV_blank>%s\" , TIFFFileName ( output ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } written = t2p -> outputwritten ; return ( written ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( count > <S2SV_ModEnd> 4 ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6271\n\n```\nCWE-254 int bzrtp_packetParser ( bzrtpContext_t * zrtpContext , bzrtpChannelContext_t * zrtpChannelContext , const uint8_t * input , uint16_t inputLength , bzrtpPacket_t * zrtpPacket ) { int i ; uint8_t * messageContent = ( uint8_t * ) ( input + ZRTP_PACKET_HEADER_LENGTH + ZRTP_MESSAGE_HEADER_LENGTH ) ; switch ( zrtpPacket -> messageType ) { case MSGTYPE_HELLO : { bzrtpHelloMessage_t * messageData ; messageData = ( bzrtpHelloMessage_t * ) malloc ( sizeof ( bzrtpHelloMessage_t ) ) ; memcpy ( messageData -> version , messageContent , 4 ) ; messageContent += 4 ; memcpy ( messageData -> clientIdentifier , messageContent , 16 ) ; messageContent += 16 ; memcpy ( messageData -> H3 , messageContent , 32 ) ; messageContent += 32 ; memcpy ( messageData -> ZID , messageContent , 12 ) ; messageContent += 12 ; messageData -> S = ( ( * messageContent ) >> 6 ) & 0x01 ; messageData -> M = ( ( * messageContent ) >> 5 ) & 0x01 ; messageData -> P = ( ( * messageContent ) >> 4 ) & 0x01 ; messageContent += 1 ; messageData -> hc = MIN ( ( * messageContent ) & 0x0F , 7 ) ; messageContent += 1 ; messageData -> cc = MIN ( ( ( * messageContent ) >> 4 ) & 0x0F , 7 ) ; messageData -> ac = MIN ( ( * messageContent ) & 0x0F , 7 ) ; messageContent += 1 ; messageData -> kc = MIN ( ( ( * messageContent ) >> 4 ) & 0x0F , 7 ) ; messageData -> sc = MIN ( ( * messageContent ) & 0x0F , 7 ) ; messageContent += 1 ; if ( zrtpPacket -> messageLength != ZRTP_HELLOMESSAGE_FIXED_LENGTH + 4 * ( ( uint16_t ) ( messageData -> hc ) + ( uint16_t ) ( messageData -> cc ) + ( uint16_t ) ( messageData -> ac ) + ( uint16_t ) ( messageData -> kc ) + ( uint16_t ) ( messageData -> sc ) ) ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } for ( i = 0 ; i < messageData -> hc ; i ++ ) { messageData -> supportedHash [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_HASH_TYPE ) ; messageContent += 4 ; } for ( i = 0 ; i < messageData -> cc ; i ++ ) { messageData -> supportedCipher [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_CIPHERBLOCK_TYPE ) ; messageContent += 4 ; } for ( i = 0 ; i < messageData -> ac ; i ++ ) { messageData -> supportedAuthTag [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_AUTHTAG_TYPE ) ; messageContent += 4 ; } for ( i = 0 ; i < messageData -> kc ; i ++ ) { messageData -> supportedKeyAgreement [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_KEYAGREEMENT_TYPE ) ; messageContent += 4 ; } for ( i = 0 ; i < messageData -> sc ; i ++ ) { messageData -> supportedSas [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_SAS_TYPE ) ; messageContent += 4 ; } addMandatoryCryptoTypesIfNeeded ( ZRTP_HASH_TYPE , messageData -> supportedHash , & messageData -> hc ) ; addMandatoryCryptoTypesIfNeeded ( ZRTP_CIPHERBLOCK_TYPE , messageData -> supportedCipher , & messageData -> cc ) ; addMandatoryCryptoTypesIfNeeded ( ZRTP_AUTHTAG_TYPE , messageData -> supportedAuthTag , & messageData -> ac ) ; addMandatoryCryptoTypesIfNeeded ( ZRTP_KEYAGREEMENT_TYPE , messageData -> supportedKeyAgreement , & messageData -> kc ) ; addMandatoryCryptoTypesIfNeeded ( ZRTP_SAS_TYPE , messageData -> supportedSas , & messageData -> sc ) ; memcpy ( messageData -> MAC , messageContent , 8 ) ; zrtpPacket -> messageData = ( void * ) messageData ; zrtpPacket -> packetString = ( uint8_t * ) malloc ( inputLength * sizeof ( uint8_t ) ) ; memcpy ( zrtpPacket -> packetString , input , inputLength ) ; } break ; case MSGTYPE_HELLOACK : { if ( zrtpPacket -> messageLength != ZRTP_HELLOACKMESSAGE_FIXED_LENGTH ) { return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } } break ; case MSGTYPE_COMMIT : { uint8_t checkH3 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpHelloMessage_t * peerHelloMessageData ; uint16_t variableLength = 0 ; bzrtpCommitMessage_t * messageData ; messageData = ( bzrtpCommitMessage_t * ) malloc ( sizeof ( bzrtpCommitMessage_t ) ) ; memcpy ( messageData -> H2 , messageContent , 32 ) ; messageContent += 32 ; if ( zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerHelloMessageData = ( bzrtpHelloMessage_t * ) zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( messageData -> H2 , 32 , 32 , checkH3 ) ; if ( memcmp ( checkH3 , peerHelloMessageData -> H3 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( messageData -> H2 , 32 , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerHelloMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } memcpy ( messageData -> ZID , messageContent , 12 ) ; messageContent += 12 ; messageData -> hashAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_HASH_TYPE ) ; messageContent += 4 ; messageData -> cipherAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_CIPHERBLOCK_TYPE ) ; messageContent += 4 ; messageData -> authTagAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_AUTHTAG_TYPE ) ; messageContent += 4 ; messageData -> keyAgreementAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_KEYAGREEMENT_TYPE ) ; messageContent += 4 ; switch ( messageData -> keyAgreementAlgo ) { case ZRTP_KEYAGREEMENT_DH2k : case ZRTP_KEYAGREEMENT_EC25 : case ZRTP_KEYAGREEMENT_DH3k : case ZRTP_KEYAGREEMENT_EC38 : case ZRTP_KEYAGREEMENT_EC52 : variableLength = 32 ; break ; case ZRTP_KEYAGREEMENT_Prsh : variableLength = 24 ; break ; case ZRTP_KEYAGREEMENT_Mult : variableLength = 16 ; break ; default : free ( messageData ) ; return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } if ( zrtpPacket -> messageLength != ZRTP_COMMITMESSAGE_FIXED_LENGTH + variableLength ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } messageData -> sasAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_SAS_TYPE ) ; messageContent += 4 ; if ( ( messageData -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Prsh ) || ( messageData -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Mult ) ) { memcpy ( messageData -> nonce , messageContent , 16 ) ; messageContent += 16 ; if ( messageData -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Prsh ) { memcpy ( messageData -> keyID , messageContent , 8 ) ; messageContent += 8 ; } } else { memcpy ( messageData -> hvi , messageContent , 32 ) ; messageContent += 32 ; } memcpy ( messageData -> MAC , messageContent , 8 ) ; zrtpPacket -> messageData = ( void * ) messageData ; zrtpPacket -> packetString = ( uint8_t * ) malloc ( inputLength * sizeof ( uint8_t ) ) ; memcpy ( zrtpPacket -> packetString , input , inputLength ) ; } break ; case MSGTYPE_DHPART1 : case MSGTYPE_DHPART2 : { bzrtpDHPartMessage_t * messageData ; uint16_t pvLength = computeKeyAgreementPrivateValueLength ( zrtpChannelContext -> keyAgreementAlgo ) ; if ( pvLength == 0 ) { return BZRTP_PARSER_ERROR_INVALIDCONTEXT ; } if ( zrtpPacket -> messageLength != ZRTP_DHPARTMESSAGE_FIXED_LENGTH + pvLength ) { return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } messageData = ( bzrtpDHPartMessage_t * ) malloc ( sizeof ( bzrtpDHPartMessage_t ) ) ; messageData -> pv = ( uint8_t * ) malloc ( pvLength * sizeof ( uint8_t ) ) ; memcpy ( messageData -> H1 , messageContent , 32 ) ; messageContent += 32 ; if ( zrtpChannelContext -> role == RESPONDER ) { uint8_t checkH2 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpCommitMessage_t * peerCommitMessageData ; if ( zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerCommitMessageData = ( bzrtpCommitMessage_t * ) zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( messageData -> H1 , 32 , 32 , checkH2 ) ; if ( memcmp ( checkH2 , peerCommitMessageData -> H2 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( messageData -> H1 , 32 , zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerCommitMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } <S2SV_StartBug> } else { <S2SV_EndBug> uint8_t checkH2 [ 32 ] ; uint8_t checkH3 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpHelloMessage_t * peerHelloMessageData ; if ( zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerHelloMessageData = ( bzrtpHelloMessage_t * ) zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( messageData -> H1 , 32 , 32 , checkH2 ) ; bctoolbox_sha256 ( checkH2 , 32 , 32 , checkH3 ) ; if ( memcmp ( checkH3 , peerHelloMessageData -> H3 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( checkH2 , 32 , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerHelloMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } } memcpy ( messageData -> rs1ID , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> rs2ID , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> auxsecretID , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> pbxsecretID , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> pv , messageContent , pvLength ) ; messageContent += pvLength ; memcpy ( messageData -> MAC , messageContent , 8 ) ; zrtpPacket -> messageData = ( void * ) messageData ; zrtpPacket -> packetString = ( uint8_t * ) malloc ( inputLength * sizeof ( uint8_t ) ) ; memcpy ( zrtpPacket -> packetString , input , inputLength ) ; } break ; case MSGTYPE_CONFIRM1 : case MSGTYPE_CONFIRM2 : { uint8_t * confirmMessageKey = NULL ; uint8_t * confirmMessageMacKey = NULL ; bzrtpConfirmMessage_t * messageData ; uint16_t cipherTextLength ; uint8_t computedHmac [ 8 ] ; uint8_t * confirmPlainMessageBuffer ; uint8_t * confirmPlainMessage ; if ( zrtpChannelContext -> role == RESPONDER ) { if ( ( zrtpChannelContext -> zrtpkeyi == NULL ) || ( zrtpChannelContext -> mackeyi == NULL ) ) { return BZRTP_PARSER_ERROR_INVALIDCONTEXT ; } confirmMessageKey = zrtpChannelContext -> zrtpkeyi ; confirmMessageMacKey = zrtpChannelContext -> mackeyi ; } if ( zrtpChannelContext -> role == INITIATOR ) { if ( ( zrtpChannelContext -> zrtpkeyr == NULL ) || ( zrtpChannelContext -> mackeyr == NULL ) ) { return BZRTP_PARSER_ERROR_INVALIDCONTEXT ; } confirmMessageKey = zrtpChannelContext -> zrtpkeyr ; confirmMessageMacKey = zrtpChannelContext -> mackeyr ; } messageData = ( bzrtpConfirmMessage_t * ) malloc ( sizeof ( bzrtpConfirmMessage_t ) ) ; memcpy ( messageData -> confirm_mac , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> CFBIV , messageContent , 16 ) ; messageContent += 16 ; cipherTextLength = zrtpPacket -> messageLength - ZRTP_MESSAGE_HEADER_LENGTH - 24 ; zrtpChannelContext -> hmacFunction ( confirmMessageMacKey , zrtpChannelContext -> hashLength , messageContent , cipherTextLength , 8 , computedHmac ) ; if ( memcmp ( computedHmac , messageData -> confirm_mac , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGCONFIRMMAC ; } confirmPlainMessageBuffer = ( uint8_t * ) malloc ( cipherTextLength * sizeof ( uint8_t ) ) ; zrtpChannelContext -> cipherDecryptionFunction ( confirmMessageKey , messageData -> CFBIV , messageContent , cipherTextLength , confirmPlainMessageBuffer ) ; confirmPlainMessage = confirmPlainMessageBuffer ; memcpy ( messageData -> H0 , confirmPlainMessage , 32 ) ; confirmPlainMessage += 33 ; if ( zrtpChannelContext -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Prsh || zrtpChannelContext -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Mult ) { uint8_t checkH1 [ 32 ] ; bctoolbox_sha256 ( messageData -> H0 , 32 , 32 , checkH1 ) ; if ( zrtpChannelContext -> role == RESPONDER ) { uint8_t checkH2 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpCommitMessage_t * peerCommitMessageData ; if ( zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerCommitMessageData = ( bzrtpCommitMessage_t * ) zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( checkH1 , 32 , 32 , checkH2 ) ; if ( memcmp ( checkH2 , peerCommitMessageData -> H2 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( checkH1 , 32 , zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerCommitMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } } else { uint8_t checkH2 [ 32 ] ; uint8_t checkH3 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpHelloMessage_t * peerHelloMessageData ; if ( zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerHelloMessageData = ( bzrtpHelloMessage_t * ) zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( checkH1 , 32 , 32 , checkH2 ) ; bctoolbox_sha256 ( checkH2 , 32 , 32 , checkH3 ) ; if ( memcmp ( checkH3 , peerHelloMessageData -> H3 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( checkH2 , 32 , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerHelloMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } } } else { uint8_t checkH1 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpDHPartMessage_t * peerDHPartMessageData ; if ( zrtpChannelContext -> peerPackets [ DHPART_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerDHPartMessageData = ( bzrtpDHPartMessage_t * ) zrtpChannelContext -> peerPackets [ DHPART_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( messageData -> H0 , 32 , 32 , checkH1 ) ; if ( memcmp ( checkH1 , peerDHPartMessageData -> H1 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( messageData -> H0 , 32 , zrtpChannelContext -> peerPackets [ DHPART_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ DHPART_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerDHPartMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } } messageData -> sig_len = ( ( uint16_t ) ( confirmPlainMessage [ 0 ] & 0x01 ) ) << 8 | ( ( ( uint16_t ) confirmPlainMessage [ 1 ] ) & 0x00FF ) ; confirmPlainMessage += 2 ; messageData -> E = ( ( * confirmPlainMessage ) & 0x08 ) >> 3 ; messageData -> V = ( ( * confirmPlainMessage ) & 0x04 ) >> 2 ; messageData -> A = ( ( * confirmPlainMessage ) & 0x02 ) >> 1 ; messageData -> D = ( * confirmPlainMessage ) & 0x01 ; confirmPlainMessage += 1 ; messageData -> cacheExpirationInterval = ( ( ( uint32_t ) confirmPlainMessage [ 0 ] ) << 24 ) | ( ( ( uint32_t ) confirmPlainMessage [ 1 ] ) << 16 ) | ( ( ( uint32_t ) confirmPlainMessage [ 2 ] ) << 8 ) | ( ( uint32_t ) confirmPlainMessage [ 3 ] ) ; confirmPlainMessage += 4 ; if ( messageData -> sig_len > 0 ) { memcpy ( messageData -> signatureBlockType , confirmPlainMessage , 4 ) ; confirmPlainMessage += 4 ; messageData -> signatureBlock = ( uint8_t * ) malloc ( 4 * ( messageData -> sig_len - 1 ) * sizeof ( uint8_t ) ) ; memcpy ( messageData -> signatureBlock , confirmPlainMessage , 4 * ( messageData -> sig_len - 1 ) ) ; } else { messageData -> signatureBlock = NULL ; } free ( confirmPlainMessageBuffer ) ; zrtpPacket -> packetString = ( uint8_t * ) malloc ( inputLength * sizeof ( uint8_t ) ) ; memcpy ( zrtpPacket -> packetString , input , inputLength ) ; zrtpPacket -> messageData = ( void * ) messageData ; } break ; case MSGTYPE_CONF2ACK : break ; case MSGTYPE_PING : { bzrtpPingMessage_t * messageData ; messageData = ( bzrtpPingMessage_t * ) malloc ( sizeof ( bzrtpPingMessage_t ) ) ; memcpy ( messageData -> version , messageContent , 4 ) ; messageContent += 4 ; memcpy ( messageData -> endpointHash , messageContent , 8 ) ; zrtpPacket -> messageData = ( void * ) messageData ; } break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } { uint8_t computedHvi [ 32 ] ; uint16_t HelloMessageLength = zrtpChannelContext -> selfPackets [ HELLO_MESSAGE_STORE_ID ] -> messageLength ; uint16_t DHPartHelloMessageStringLength = zrtpPacket -> messageLength + HelloMessageLength ; uint8_t * DHPartHelloMessageString = ( uint8_t * ) malloc ( DHPartHelloMessageStringLength * sizeof ( uint8_t ) ) ; memcpy ( DHPartHelloMessageString , input + ZRTP_PACKET_HEADER_LENGTH , zrtpPacket -> messageLength ) ; memcpy ( DHPartHelloMessageString + zrtpPacket -> messageLength , zrtpChannelContext -> selfPackets [ HELLO_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , HelloMessageLength ) ; zrtpChannelContext -> hashFunction ( DHPartHelloMessageString , DHPartHelloMessageStringLength , 32 , computedHvi ) ; free ( DHPartHelloMessageString ) ; if ( memcmp ( computedHvi , peerCommitMessageData -> hvi , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHVI ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13030\n\n```\nCWE-125 static void pimv2_print ( netdissect_options * ndo , register const u_char * bp , register u_int len , const u_char * bp2 ) { register const u_char * ep ; register const struct pim * pim = ( const struct pim * ) bp ; int advance ; enum checksum_status cksum_status ; <S2SV_StartBug> ep = ( const u_char * ) ndo -> ndo_snapend ; <S2SV_EndBug> if ( bp >= ep ) return ; if ( ep > bp + len ) ep = bp + len ; <S2SV_StartBug> ND_TCHECK ( pim -> pim_rsv ) ; <S2SV_EndBug> pimv2_addr_len = pim -> pim_rsv ; if ( pimv2_addr_len != 0 ) <S2SV_StartBug> ND_PRINT ( ( ndo , \",<S2SV_blank>RFC2117-encoding\" ) ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \",<S2SV_blank>cksum<S2SV_blank>0x%04x<S2SV_blank>\" , EXTRACT_16BITS ( & pim -> pim_cksum ) ) ) ; if ( EXTRACT_16BITS ( & pim -> pim_cksum ) == 0 ) { ND_PRINT ( ( ndo , \"(unverified)\" ) ) ; } else { if ( PIM_TYPE ( pim -> pim_typever ) == PIMV2_TYPE_REGISTER ) { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , 8 ) ; if ( cksum_status == INCORRECT ) { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , len ) ; } } else { cksum_status = pimv2_check_checksum ( ndo , bp , bp2 , len ) ; } switch ( cksum_status ) { case CORRECT : ND_PRINT ( ( ndo , \"(correct)\" ) ) ; break ; case INCORRECT : ND_PRINT ( ( ndo , \"(incorrect)\" ) ) ; break ; case UNVERIFIED : ND_PRINT ( ( ndo , \"(unverified)\" ) ) ; break ; } } <S2SV_StartBug> switch ( PIM_TYPE ( pim -> pim_typever ) ) { <S2SV_EndBug> case PIMV2_TYPE_HELLO : { uint16_t otype , olen ; <S2SV_StartBug> bp += 4 ; <S2SV_EndBug> while ( bp < ep ) { ND_TCHECK2 ( bp [ 0 ] , 4 ) ; otype = EXTRACT_16BITS ( & bp [ 0 ] ) ; olen = EXTRACT_16BITS ( & bp [ 2 ] ) ; <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , 4 + olen ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>Value:<S2SV_blank>\" , tok2str ( pimv2_hello_option_values , \"Unknown\" , otype ) , otype , olen ) ) ; bp += 4 ; switch ( otype ) { case PIMV2_HELLO_OPTION_HOLDTIME : if ( olen != 2 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>2<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; } break ; case PIMV2_HELLO_OPTION_LANPRUNEDELAY : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { char t_bit ; uint16_t lan_delay , override_interval ; lan_delay = EXTRACT_16BITS ( bp ) ; override_interval = EXTRACT_16BITS ( bp + 2 ) ; t_bit = ( lan_delay & 0x8000 ) ? 1 : 0 ; lan_delay &= ~ 0x8000 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>T-bit=%d,<S2SV_blank>LAN<S2SV_blank>delay<S2SV_blank>%dms,<S2SV_blank>Override<S2SV_blank>interval<S2SV_blank>%dms\" , t_bit , lan_delay , override_interval ) ) ; } break ; case PIMV2_HELLO_OPTION_DR_PRIORITY_OLD : case PIMV2_HELLO_OPTION_DR_PRIORITY : switch ( olen ) { case 0 : ND_PRINT ( ( ndo , \"Bi-Directional<S2SV_blank>Capability<S2SV_blank>(Old)\" ) ) ; break ; case 4 : ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( bp ) ) ) ; break ; default : ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; break ; } break ; case PIMV2_HELLO_OPTION_GENID : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { ND_PRINT ( ( ndo , \"0x%08x\" , EXTRACT_32BITS ( bp ) ) ) ; } break ; case PIMV2_HELLO_OPTION_REFRESH_CAP : if ( olen != 4 ) { ND_PRINT ( ( ndo , \"ERROR:<S2SV_blank>Option<S2SV_blank>Length<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>Bytes<S2SV_blank>(%u)\" , olen ) ) ; } else { ND_PRINT ( ( ndo , \"v%d\" , * bp ) ) ; if ( * ( bp + 1 ) != 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>interval<S2SV_blank>\" ) ) ; unsigned_relts_print ( ndo , * ( bp + 1 ) ) ; } if ( EXTRACT_16BITS ( bp + 2 ) != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?0x%04x?\" , EXTRACT_16BITS ( bp + 2 ) ) ) ; } } break ; case PIMV2_HELLO_OPTION_BIDIR_CAP : break ; case PIMV2_HELLO_OPTION_ADDRESS_LIST_OLD : case PIMV2_HELLO_OPTION_ADDRESS_LIST : if ( ndo -> ndo_vflag > 1 ) { const u_char * ptr = bp ; <S2SV_StartBug> while ( ptr < ( bp + olen ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; <S2SV_StartBug> advance = pimv2_addr_print ( ndo , ptr , pimv2_unicast , 0 ) ; <S2SV_EndBug> if ( advance < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } ptr += advance ; } } break ; default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , olen ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , olen ) ; <S2SV_StartBug> bp += olen ; <S2SV_EndBug> } break ; } case PIMV2_TYPE_REGISTER : { const struct ip * ip ; <S2SV_StartBug> ND_TCHECK2 ( * ( bp + 4 ) , PIMV2_REGISTER_FLAG_LEN ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[<S2SV_blank>%s<S2SV_blank>]\\\\n\\\\t\" , tok2str ( pimv2_register_flag_values , \"none\" , <S2SV_StartBug> EXTRACT_32BITS ( bp + 4 ) ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> bp += 8 ; len -= 8 ; <S2SV_EndBug> ip = ( const struct ip * ) bp ; <S2SV_StartBug> switch ( IP_V ( ip ) ) { <S2SV_EndBug> <S2SV_StartBug> case 0 : <S2SV_EndBug> ND_PRINT ( ( ndo , \"IP-Null-header<S2SV_blank>%s<S2SV_blank>><S2SV_blank>%s\" , ipaddr_string ( ndo , & ip -> ip_src ) , ipaddr_string ( ndo , & ip -> ip_dst ) ) ) ; break ; case 4 : ip_print ( ndo , bp , len ) ; break ; case 6 : ip6_print ( ndo , bp , len ) ; break ; default : ND_PRINT ( ( ndo , \"IP<S2SV_blank>ver<S2SV_blank>%d\" , IP_V ( ip ) ) ) ; break ; } break ; } case PIMV2_TYPE_REGISTER_STOP : <S2SV_StartBug> bp += 4 ; len -= 4 ; <S2SV_EndBug> if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>group=\" ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>source=\" ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; break ; case PIMV2_TYPE_JOIN_PRUNE : case PIMV2_TYPE_GRAFT : case PIMV2_TYPE_GRAFT_ACK : { uint8_t ngroup ; uint16_t holdtime ; uint16_t njoin ; uint16_t nprune ; <S2SV_StartBug> int i , j ; <S2SV_EndBug> bp += 4 ; len -= 4 ; if ( PIM_TYPE ( pim -> pim_typever ) != 7 ) { <S2SV_StartBug> if ( bp >= ep ) <S2SV_EndBug> break ; ND_PRINT ( ( ndo , \",<S2SV_blank>upstream-neighbor:<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; } <S2SV_StartBug> if ( bp + 4 > ep ) <S2SV_EndBug> break ; ngroup = bp [ 1 ] ; holdtime = EXTRACT_16BITS ( & bp [ 2 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%u<S2SV_blank>group(s)\" , ngroup ) ) ; if ( PIM_TYPE ( pim -> pim_typever ) != 7 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>holdtime:<S2SV_blank>\" ) ) ; if ( holdtime == 0xffff ) ND_PRINT ( ( ndo , \"infinite\" ) ) ; else unsigned_relts_print ( ndo , holdtime ) ; } bp += 4 ; len -= 4 ; for ( i = 0 ; i < ngroup ; i ++ ) { <S2SV_StartBug> if ( bp >= ep ) <S2SV_EndBug> goto jp_done ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>group<S2SV_blank>#%u:<S2SV_blank>\" , i + 1 ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; <S2SV_StartBug> if ( bp + 4 > ep ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } njoin = EXTRACT_16BITS ( & bp [ 0 ] ) ; nprune = EXTRACT_16BITS ( & bp [ 2 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>joined<S2SV_blank>sources:<S2SV_blank>%u,<S2SV_blank>pruned<S2SV_blank>sources:<S2SV_blank>%u\" , njoin , nprune ) ) ; bp += 4 ; len -= 4 ; for ( j = 0 ; j < njoin ; j ++ ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>joined<S2SV_blank>source<S2SV_blank>#%u:<S2SV_blank>\" , j + 1 ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_source , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; } for ( j = 0 ; j < nprune ; j ++ ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>pruned<S2SV_blank>source<S2SV_blank>#%u:<S2SV_blank>\" , j + 1 ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_source , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...)\" ) ) ; goto jp_done ; } bp += advance ; len -= advance ; } } <S2SV_StartBug> jp_done : <S2SV_EndBug> break ; } case PIMV2_TYPE_BOOTSTRAP : { int i , j , frpcnt ; <S2SV_StartBug> bp += 4 ; <S2SV_EndBug> if ( bp + sizeof ( uint16_t ) >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>tag=%x\" , EXTRACT_16BITS ( bp ) ) ) ; bp += sizeof ( uint16_t ) ; if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>hashmlen=%d\" , bp [ 0 ] ) ) ; <S2SV_StartBug> if ( bp + 1 >= ep ) break ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BSRprio=%d\" , bp [ 1 ] ) ) ; bp += 2 ; <S2SV_StartBug> if ( bp >= ep ) break ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BSR=\" ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; for ( i = 0 ; bp < ep ; i ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(group%d:<S2SV_blank>\" , i ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) <S2SV_EndBug> < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } bp += advance ; <S2SV_StartBug> if ( bp >= ep ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \"<S2SV_blank>RPcnt=%d\" , bp [ 0 ] ) ) ; <S2SV_StartBug> if ( bp + 1 >= ep ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>FRPcnt=%d\" , frpcnt = bp [ 1 ] ) ) ; <S2SV_EndBug> <S2SV_StartBug> bp += 4 ; <S2SV_EndBug> for ( j = 0 ; j < frpcnt && bp < ep ; j ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>RP%d=\" , j ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , <S2SV_EndBug> pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } bp += advance ; <S2SV_StartBug> if ( bp + 1 >= ep ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } ND_PRINT ( ( ndo , \",holdtime=\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; <S2SV_StartBug> if ( bp + 2 >= ep ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...)\" ) ) ; goto bs_done ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \",prio=%d\" , bp [ 2 ] ) ) ; <S2SV_EndBug> bp += 4 ; <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \")\" ) ) ; } <S2SV_StartBug> bs_done : <S2SV_EndBug> break ; } case PIMV2_TYPE_ASSERT : <S2SV_StartBug> bp += 4 ; len -= 4 ; <S2SV_EndBug> if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>group=\" ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; <S2SV_StartBug> if ( bp >= ep ) <S2SV_EndBug> break ; ND_PRINT ( ( ndo , \"<S2SV_blank>src=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; len -= advance ; if ( bp + 8 > ep ) break ; if ( bp [ 0 ] & 0x80 ) ND_PRINT ( ( ndo , \"<S2SV_blank>RPT\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pref=%u\" , EXTRACT_32BITS ( & bp [ 0 ] ) & 0x7fffffff ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>metric=%u\" , EXTRACT_32BITS ( & bp [ 4 ] ) ) ) ; break ; case PIMV2_TYPE_CANDIDATE_RP : { int i , pfxcnt ; <S2SV_StartBug> bp += 4 ; <S2SV_EndBug> if ( bp >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>prefix-cnt=%d\" , bp [ 0 ] ) ) ; pfxcnt = bp [ 0 ] ; <S2SV_StartBug> if ( bp + 1 >= ep ) break ; <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>prio=%d\" , bp [ 1 ] ) ) ; <S2SV_EndBug> if ( bp + 3 >= ep ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>holdtime=\" ) ) ; <S2SV_StartBug> unsigned_relts_print ( ndo , EXTRACT_16BITS ( & bp [ 2 ] ) ) ; <S2SV_EndBug> bp += 4 ; <S2SV_StartBug> if ( bp >= ep ) break ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>RP=\" ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; for ( i = 0 ; i < pfxcnt && bp < ep ; i ++ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>Group%d=\" , i ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) <S2SV_EndBug> < 0 ) { ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; } break ; } case PIMV2_TYPE_PRUNE_REFRESH : ND_PRINT ( ( ndo , \"<S2SV_blank>src=\" ) ) ; <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>grp=\" ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_group , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>forwarder=\" ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( advance = pimv2_addr_print ( ndo , bp , pimv2_unicast , 0 ) ) < 0 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"...\" ) ) ; break ; } bp += advance ; <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>TUNR<S2SV_blank>\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( bp ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>[type<S2SV_blank>%d]\" , PIM_TYPE ( pim -> pim_typever ) ) ) ; break ; } return ; trunc : ND_PRINT ( ( ndo , \"[|pim]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> checksum_status cksum_status ; int pimv2_addr_len ; <S2SV_ModStart> + len ; if ( len < 2 ) goto trunc ; <S2SV_ModStart> , \",<S2SV_blank>RFC2117-encoding\" ) ) ; if ( len < 4 ) goto trunc ; ND_TCHECK ( pim -> pim_cksum <S2SV_ModStart> ; } } bp += 4 ; len -= 4 ; <S2SV_ModStart> , olen ; while ( len > 0 ) { if ( len < 4 ) goto trunc ; <S2SV_ModEnd> ND_TCHECK2 ( bp <S2SV_ModStart> ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>Value:<S2SV_blank>\" , tok2str ( pimv2_hello_option_values , \"Unknown\" , otype ) , otype , olen ) ) ; bp += 4 ; len -= 4 ; if ( len < olen ) goto trunc ; <S2SV_ModStart> 0 ] , olen ) <S2SV_ModEnd> ; switch ( <S2SV_ModStart> = bp ; u_int plen = len ; <S2SV_ModStart> , ptr , plen , pimv2_unicast , pimv2_addr_len , 0 ) ; if ( advance < 0 ) goto trunc ; ptr += advance ; plen -= <S2SV_ModEnd> advance ; } <S2SV_ModStart> ; bp += olen ; len -= <S2SV_ModStart> * ip ; if ( len < 4 ) goto trunc ; <S2SV_ModStart> ND_TCHECK2 ( * bp <S2SV_ModEnd> , PIMV2_REGISTER_FLAG_LEN ) <S2SV_ModStart> EXTRACT_32BITS ( bp <S2SV_ModEnd> ) ) ) <S2SV_ModStart> ; bp += 4 <S2SV_ModEnd> ; len -= <S2SV_ModStart> ; len -= 4 ; if ( len == 0 ) goto trunc <S2SV_ModEnd> ; ip = <S2SV_ModStart> ) bp ; ND_TCHECK ( ip -> ip_vhl ) ; <S2SV_ModStart> case 0 : ND_TCHECK ( ip -> ip_dst ) ; <S2SV_ModStart> case PIMV2_TYPE_REGISTER_STOP : ND_PRINT ( ( ndo , \"<S2SV_blank>group=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , len , pimv2_group , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; bp += advance <S2SV_ModEnd> ; len -= <S2SV_ModStart> ; len -= advance ; ND_PRINT ( ( ndo , \"<S2SV_blank>source=\" <S2SV_ModEnd> ) ) ; <S2SV_ModStart> , bp , len <S2SV_ModEnd> , pimv2_unicast , <S2SV_ModStart> , pimv2_unicast , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> i , j <S2SV_ModEnd> ; if ( <S2SV_ModStart> 7 ) { <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> , bp , len , pimv2_unicast , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> } if ( len < 4 ) goto trunc ; ND_TCHECK2 ( * bp , 4 ) <S2SV_ModEnd> ; ngroup = <S2SV_ModStart> ++ ) { <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> , bp , len , pimv2_group , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> ; if ( len < 4 ) goto trunc ; ND_TCHECK2 ( * bp , 4 ) ; <S2SV_ModEnd> njoin = EXTRACT_16BITS <S2SV_ModStart> , bp , len , pimv2_source , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> , bp , len , pimv2_source , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> ; } } <S2SV_ModEnd> break ; } <S2SV_ModStart> , frpcnt ; if ( len < 2 ) goto trunc ; ND_TCHECK_16BITS ( bp ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>tag=%x\" , EXTRACT_16BITS ( bp ) ) ) ; bp += 2 ; len -= 2 ; if ( len < 1 ) goto trunc ; ND_TCHECK ( bp [ 0 ] ) <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> ; if ( len < 2 ) goto trunc ; ND_TCHECK ( bp [ 2 ] ) <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> += 2 ; len -= 2 <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> , bp , len , pimv2_unicast , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; bp += advance ; len -= <S2SV_ModEnd> advance ; for <S2SV_ModStart> , bp , len , pimv2_group , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> += advance ; len -= advance ; if ( len < 1 ) goto trunc ; ND_TCHECK ( bp [ 0 ] ) ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ; if ( len < 2 ) goto trunc ; ND_TCHECK ( <S2SV_ModEnd> bp [ 1 <S2SV_ModStart> 1 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>FRPcnt=%d\" , frpcnt = bp [ 1 ] ) ) ; if ( len < 4 ) goto trunc <S2SV_ModEnd> ; bp += <S2SV_ModStart> ; bp += 4 ; len -= <S2SV_ModStart> , bp , len , pimv2_unicast , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> += advance ; len -= advance ; if ( len < 2 ) goto trunc ; ND_TCHECK_16BITS ( bp ) ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ; if ( len < 3 ) goto trunc ; ND_TCHECK ( <S2SV_ModEnd> bp [ 2 <S2SV_ModStart> 2 ] ) ; ND_PRINT ( ( ndo , \",prio=%d\" , bp [ 2 ] ) ) ; if ( len < 4 ) goto trunc <S2SV_ModEnd> ; bp += <S2SV_ModStart> += 4 ; len -= 4 ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> break ; } <S2SV_ModStart> case PIMV2_TYPE_ASSERT : ND_PRINT ( ( ndo , \"<S2SV_blank>group=\" ) ) ; if ( ( advance = pimv2_addr_print ( ndo , bp , len , pimv2_group , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; bp += advance <S2SV_ModEnd> ; len -= <S2SV_ModStart> ; len -= advance ; ND_PRINT ( ( ndo , \"<S2SV_blank>src=\" <S2SV_ModEnd> ) ) ; <S2SV_ModStart> , bp , len , pimv2_unicast , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> ; if ( len < 8 ) goto trunc ; ND_TCHECK2 ( * bp , 8 ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> , pfxcnt ; if ( len < 1 ) goto trunc ; ND_TCHECK ( bp [ 0 ] ) <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> ; if ( len < 2 ) goto trunc ; ND_TCHECK ( <S2SV_ModEnd> bp [ 1 <S2SV_ModStart> 1 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>prio=%d\" , bp [ 1 ] ) ) ; if ( len < 4 ) goto trunc ; ND_TCHECK_16BITS <S2SV_ModEnd> ( & bp <S2SV_ModStart> 2 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>holdtime=\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( & bp [ 2 ] ) <S2SV_ModStart> += 4 ; len -= 4 <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> , bp , len , pimv2_unicast , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; bp += advance ; len -= <S2SV_ModEnd> advance ; for <S2SV_ModStart> , bp , len , pimv2_group , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; bp += advance ; len -= <S2SV_ModEnd> advance ; } <S2SV_ModStart> , bp , len , pimv2_unicast , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> += advance ; len -= advance ; <S2SV_ModStart> , bp , len , pimv2_group , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> += advance ; len -= advance ; <S2SV_ModStart> , bp , len , pimv2_unicast , pimv2_addr_len , 0 ) ) < 0 ) goto trunc ; <S2SV_ModEnd> bp += advance <S2SV_ModStart> += advance ; len -= advance ; if ( len < 2 ) goto trunc ; ND_TCHECK_16BITS ( bp <S2SV_ModEnd> ) ; ND_PRINT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19926\n\n```\nCWE-476 static int multiSelect ( Parse * pParse , Select * p , SelectDest * pDest ) { int rc = SQLITE_OK ; Select * pPrior ; Vdbe * v ; SelectDest dest ; Select * pDelete = 0 ; sqlite3 * db ; assert ( p && p -> pPrior ) ; assert ( ( p -> selFlags & SF_Recursive ) == 0 || p -> op == TK_ALL || p -> op == TK_UNION ) ; assert ( p -> selFlags & SF_Compound ) ; db = pParse -> db ; pPrior = p -> pPrior ; dest = * pDest ; if ( pPrior -> pOrderBy || pPrior -> pLimit ) { sqlite3ErrorMsg ( pParse , \"%s<S2SV_blank>clause<S2SV_blank>should<S2SV_blank>come<S2SV_blank>after<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>before\" , pPrior -> pOrderBy != 0 ? \"ORDER<S2SV_blank>BY\" : \"LIMIT\" , selectOpName ( p -> op ) ) ; rc = 1 ; goto multi_select_end ; } v = sqlite3GetVdbe ( pParse ) ; assert ( v != 0 ) ; if ( dest . eDest == SRT_EphemTab ) { assert ( p -> pEList ) ; sqlite3VdbeAddOp2 ( v , OP_OpenEphemeral , dest . iSDParm , p -> pEList -> nExpr ) ; dest . eDest = SRT_Table ; } if ( p -> selFlags & SF_MultiValue ) { rc = multiSelectValues ( pParse , p , & dest ) ; if ( rc >= 0 ) goto multi_select_end ; rc = SQLITE_OK ; } assert ( p -> pEList && pPrior -> pEList ) ; assert ( p -> pEList -> nExpr == pPrior -> pEList -> nExpr ) ; # ifndef SQLITE_OMIT_CTE if ( p -> selFlags & SF_Recursive ) { generateWithRecursiveQuery ( pParse , p , & dest ) ; } else # endif if ( p -> pOrderBy ) { return multiSelectOrderBy ( pParse , p , pDest ) ; } else { # ifndef SQLITE_OMIT_EXPLAIN if ( pPrior -> pPrior == 0 ) { ExplainQueryPlan ( ( pParse , 1 , \"COMPOUND<S2SV_blank>QUERY\" ) ) ; ExplainQueryPlan ( ( pParse , 1 , \"LEFT-MOST<S2SV_blank>SUBQUERY\" ) ) ; } # endif switch ( p -> op ) { case TK_ALL : { int addr = 0 ; int nLimit ; assert ( ! pPrior -> pLimit ) ; pPrior -> iLimit = p -> iLimit ; pPrior -> iOffset = p -> iOffset ; pPrior -> pLimit = p -> pLimit ; rc = sqlite3Select ( pParse , pPrior , & dest ) ; p -> pLimit = 0 ; if ( rc ) { goto multi_select_end ; } p -> pPrior = 0 ; p -> iLimit = pPrior -> iLimit ; p -> iOffset = pPrior -> iOffset ; if ( p -> iLimit ) { addr = sqlite3VdbeAddOp1 ( v , OP_IfNot , p -> iLimit ) ; VdbeCoverage ( v ) ; VdbeComment ( ( v , \"Jump<S2SV_blank>ahead<S2SV_blank>if<S2SV_blank>LIMIT<S2SV_blank>reached\" ) ) ; if ( p -> iOffset ) { sqlite3VdbeAddOp3 ( v , OP_OffsetLimit , p -> iLimit , p -> iOffset + 1 , p -> iOffset ) ; } } ExplainQueryPlan ( ( pParse , 1 , \"UNION<S2SV_blank>ALL\" ) ) ; rc = sqlite3Select ( pParse , p , & dest ) ; testcase ( rc != SQLITE_OK ) ; pDelete = p -> pPrior ; p -> pPrior = pPrior ; p -> nSelectRow = sqlite3LogEstAdd ( p -> nSelectRow , pPrior -> nSelectRow ) ; if ( pPrior -> pLimit && sqlite3ExprIsInteger ( pPrior -> pLimit -> pLeft , & nLimit ) && nLimit > 0 && p -> nSelectRow > sqlite3LogEst ( ( u64 ) nLimit ) ) { p -> nSelectRow = sqlite3LogEst ( ( u64 ) nLimit ) ; } if ( addr ) { sqlite3VdbeJumpHere ( v , addr ) ; } break ; } case TK_EXCEPT : case TK_UNION : { int unionTab ; u8 op = 0 ; int priorOp ; Expr * pLimit ; int addr ; SelectDest uniondest ; testcase ( p -> op == TK_EXCEPT ) ; testcase ( p -> op == TK_UNION ) ; priorOp = SRT_Union ; if ( dest . eDest == priorOp ) { assert ( p -> pLimit == 0 ) ; unionTab = dest . iSDParm ; } else { unionTab = pParse -> nTab ++ ; assert ( p -> pOrderBy == 0 ) ; addr = sqlite3VdbeAddOp2 ( v , OP_OpenEphemeral , unionTab , 0 ) ; assert ( p -> addrOpenEphm [ 0 ] == - 1 ) ; p -> addrOpenEphm [ 0 ] = addr ; findRightmost ( p ) -> selFlags |= SF_UsesEphemeral ; assert ( p -> pEList ) ; } assert ( ! pPrior -> pOrderBy ) ; sqlite3SelectDestInit ( & uniondest , priorOp , unionTab ) ; rc = sqlite3Select ( pParse , pPrior , & uniondest ) ; if ( rc ) { goto multi_select_end ; } if ( p -> op == TK_EXCEPT ) { op = SRT_Except ; } else { assert ( p -> op == TK_UNION ) ; op = SRT_Union ; } p -> pPrior = 0 ; pLimit = p -> pLimit ; p -> pLimit = 0 ; uniondest . eDest = op ; ExplainQueryPlan ( ( pParse , 1 , \"%s<S2SV_blank>USING<S2SV_blank>TEMP<S2SV_blank>B-TREE\" , selectOpName ( p -> op ) ) ) ; rc = sqlite3Select ( pParse , p , & uniondest ) ; testcase ( rc != SQLITE_OK ) ; sqlite3ExprListDelete ( db , p -> pOrderBy ) ; pDelete = p -> pPrior ; p -> pPrior = pPrior ; p -> pOrderBy = 0 ; if ( p -> op == TK_UNION ) { p -> nSelectRow = sqlite3LogEstAdd ( p -> nSelectRow , pPrior -> nSelectRow ) ; } sqlite3ExprDelete ( db , p -> pLimit ) ; p -> pLimit = pLimit ; p -> iLimit = 0 ; p -> iOffset = 0 ; assert ( unionTab == dest . iSDParm || dest . eDest != priorOp ) ; if ( dest . eDest != priorOp ) { int iCont , iBreak , iStart ; assert ( p -> pEList ) ; iBreak = sqlite3VdbeMakeLabel ( pParse ) ; iCont = sqlite3VdbeMakeLabel ( pParse ) ; computeLimitRegisters ( pParse , p , iBreak ) ; sqlite3VdbeAddOp2 ( v , OP_Rewind , unionTab , iBreak ) ; VdbeCoverage ( v ) ; iStart = sqlite3VdbeCurrentAddr ( v ) ; selectInnerLoop ( pParse , p , unionTab , 0 , 0 , & dest , iCont , iBreak ) ; sqlite3VdbeResolveLabel ( v , iCont ) ; sqlite3VdbeAddOp2 ( v , OP_Next , unionTab , iStart ) ; VdbeCoverage ( v ) ; sqlite3VdbeResolveLabel ( v , iBreak ) ; sqlite3VdbeAddOp2 ( v , OP_Close , unionTab , 0 ) ; } break ; } default : assert ( p -> op == TK_INTERSECT ) ; { int tab1 , tab2 ; int iCont , iBreak , iStart ; Expr * pLimit ; int addr ; SelectDest intersectdest ; int r1 ; tab1 = pParse -> nTab ++ ; tab2 = pParse -> nTab ++ ; assert ( p -> pOrderBy == 0 ) ; addr = sqlite3VdbeAddOp2 ( v , OP_OpenEphemeral , tab1 , 0 ) ; assert ( p -> addrOpenEphm [ 0 ] == - 1 ) ; p -> addrOpenEphm [ 0 ] = addr ; findRightmost ( p ) -> selFlags |= SF_UsesEphemeral ; assert ( p -> pEList ) ; sqlite3SelectDestInit ( & intersectdest , SRT_Union , tab1 ) ; rc = sqlite3Select ( pParse , pPrior , & intersectdest ) ; if ( rc ) { goto multi_select_end ; } addr = sqlite3VdbeAddOp2 ( v , OP_OpenEphemeral , tab2 , 0 ) ; assert ( p -> addrOpenEphm [ 1 ] == - 1 ) ; p -> addrOpenEphm [ 1 ] = addr ; p -> pPrior = 0 ; pLimit = p -> pLimit ; p -> pLimit = 0 ; intersectdest . iSDParm = tab2 ; ExplainQueryPlan ( ( pParse , 1 , \"%s<S2SV_blank>USING<S2SV_blank>TEMP<S2SV_blank>B-TREE\" , selectOpName ( p -> op ) ) ) ; rc = sqlite3Select ( pParse , p , & intersectdest ) ; testcase ( rc != SQLITE_OK ) ; pDelete = p -> pPrior ; p -> pPrior = pPrior ; if ( p -> nSelectRow > pPrior -> nSelectRow ) { p -> nSelectRow = pPrior -> nSelectRow ; } sqlite3ExprDelete ( db , p -> pLimit ) ; p -> pLimit = pLimit ; assert ( p -> pEList ) ; iBreak = sqlite3VdbeMakeLabel ( pParse ) ; iCont = sqlite3VdbeMakeLabel ( pParse ) ; computeLimitRegisters ( pParse , p , iBreak ) ; sqlite3VdbeAddOp2 ( v , OP_Rewind , tab1 , iBreak ) ; VdbeCoverage ( v ) ; r1 = sqlite3GetTempReg ( pParse ) ; iStart = sqlite3VdbeAddOp2 ( v , OP_RowData , tab1 , r1 ) ; sqlite3VdbeAddOp4Int ( v , OP_NotFound , tab2 , iCont , r1 , 0 ) ; VdbeCoverage ( v ) ; sqlite3ReleaseTempReg ( pParse , r1 ) ; selectInnerLoop ( pParse , p , tab1 , 0 , 0 , & dest , iCont , iBreak ) ; sqlite3VdbeResolveLabel ( v , iCont ) ; sqlite3VdbeAddOp2 ( v , OP_Next , tab1 , iStart ) ; VdbeCoverage ( v ) ; sqlite3VdbeResolveLabel ( v , iBreak ) ; sqlite3VdbeAddOp2 ( v , OP_Close , tab2 , 0 ) ; sqlite3VdbeAddOp2 ( v , OP_Close , tab1 , 0 ) ; break ; } } # ifndef SQLITE_OMIT_EXPLAIN if ( p -> pNext == 0 ) { ExplainQueryPlanPop ( pParse ) ; } # endif } <S2SV_StartBug> if ( p -> selFlags & SF_UsesEphemeral ) { <S2SV_EndBug> int i ; KeyInfo * pKeyInfo ; Select * pLoop ; CollSeq * * apColl ; int nCol ; assert ( p -> pNext == 0 ) ; nCol = p -> pEList -> nExpr ; pKeyInfo = sqlite3KeyInfoAlloc ( db , nCol , 1 ) ; if ( ! pKeyInfo ) { rc = SQLITE_NOMEM_BKPT ; goto multi_select_end ; } for ( i = 0 , apColl = pKeyInfo -> aColl ; i < nCol ; i ++ , apColl ++ ) { * apColl = multiSelectCollSeq ( pParse , p , i ) ; if ( 0 == * apColl ) { * apColl = db -> pDfltColl ; } } for ( pLoop = p ; pLoop ; pLoop = pLoop -> pPrior ) { for ( i = 0 ; i < 2 ; i ++ ) { int addr = pLoop -> addrOpenEphm [ i ] ; if ( addr < 0 ) { assert ( pLoop -> addrOpenEphm [ 1 ] < 0 ) ; break ; } sqlite3VdbeChangeP2 ( v , addr , nCol ) ; sqlite3VdbeChangeP4 ( v , addr , ( char * ) sqlite3KeyInfoRef ( pKeyInfo ) , P4_KEYINFO ) ; pLoop -> addrOpenEphm [ i ] = - 1 ; } } sqlite3KeyInfoUnref ( pKeyInfo ) ; } multi_select_end : pDest -> iSdst = dest . iSdst ; pDest -> nSdst = dest . nSdst ; sqlite3SelectDelete ( db , pDelete ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( pParse -> nErr ) goto multi_select_end ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-476 int fscrypt_get_encryption_info ( struct inode * inode ) { <S2SV_StartBug> struct fscrypt_info * ci = inode -> i_crypt_info ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ci || <S2SV_EndBug> ( ci -> ci_keyring_key && ( ci -> ci_keyring_key -> flags & ( ( 1 << KEY_FLAG_INVALIDATED ) | ( 1 << KEY_FLAG_REVOKED ) | ( 1 << KEY_FLAG_DEAD ) ) ) ) ) return fscrypt_get_crypt_info ( inode ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct fscrypt_info * crypt_info ; struct fscrypt_context ctx ; struct crypto_skcipher * ctfm ; const char * cipher_str ; int keysize ; u8 * raw_key = NULL ; int res ; if ( <S2SV_ModEnd> inode -> i_crypt_info <S2SV_ModStart> inode -> i_crypt_info ) return 0 ; res = fscrypt_initialize ( inode -> i_sb -> s_cop -> flags ) ; if ( res ) return res <S2SV_ModStart> if ( ! inode -> i_sb -> s_cop -> get_context ) return - EOPNOTSUPP ; res = inode -> i_sb -> s_cop -> get_context ( inode , & ctx , sizeof ( ctx ) ) ; if ( res < 0 ) { if ( ! fscrypt_dummy_context_enabled ( inode ) || inode -> i_sb -> s_cop -> is_encrypted ( inode ) ) return res ; memset ( & ctx , 0 , sizeof ( ctx ) ) ; ctx . format = FS_ENCRYPTION_CONTEXT_FORMAT_V1 ; ctx . contents_encryption_mode = FS_ENCRYPTION_MODE_AES_256_XTS ; ctx . filenames_encryption_mode = FS_ENCRYPTION_MODE_AES_256_CTS ; memset ( ctx . master_key_descriptor , 0x42 , FS_KEY_DESCRIPTOR_SIZE ) ; } else if ( res != sizeof ( ctx ) ) { return - EINVAL ; } if ( ctx . format != FS_ENCRYPTION_CONTEXT_FORMAT_V1 ) return - EINVAL ; if ( ctx . flags & ~ FS_POLICY_FLAGS_VALID ) return - EINVAL ; crypt_info = kmem_cache_alloc ( fscrypt_info_cachep , GFP_NOFS ) ; if ( ! crypt_info ) return - ENOMEM ; crypt_info -> ci_flags = ctx . flags ; crypt_info -> ci_data_mode = ctx . contents_encryption_mode ; crypt_info -> ci_filename_mode = ctx . filenames_encryption_mode ; crypt_info -> ci_ctfm = NULL ; memcpy ( crypt_info -> ci_master_key , ctx . master_key_descriptor , sizeof ( crypt_info -> ci_master_key ) ) ; res = determine_cipher_type ( crypt_info , inode , & cipher_str , & keysize ) ; if ( res ) goto out ; res = - ENOMEM ; raw_key = kmalloc ( FS_MAX_KEY_SIZE , GFP_NOFS ) ; if ( ! raw_key ) goto out ; res = validate_user_key ( crypt_info , & ctx , raw_key , FS_KEY_DESC_PREFIX ) ; if ( res && inode -> i_sb -> s_cop -> key_prefix ) { int res2 = validate_user_key ( crypt_info , & ctx , raw_key , inode -> i_sb -> s_cop -> key_prefix ) ; if ( res2 ) { if ( res2 == - ENOKEY ) res = - ENOKEY ; goto out ; } } else if ( res ) { goto out ; } ctfm = crypto_alloc_skcipher ( cipher_str , 0 , 0 ) ; if ( ! ctfm || IS_ERR ( ctfm ) ) { res = ctfm ? PTR_ERR ( ctfm ) : - ENOMEM ; printk ( KERN_DEBUG \"%s:<S2SV_blank>error<S2SV_blank>%d<S2SV_blank>(inode<S2SV_blank>%u)<S2SV_blank>allocating<S2SV_blank>crypto<S2SV_blank>tfm\\\\n\" , __func__ , res , ( unsigned ) inode -> i_ino ) ; goto out ; } crypt_info -> ci_ctfm = ctfm ; crypto_skcipher_clear_flags ( ctfm , ~ 0 ) ; crypto_skcipher_set_flags ( ctfm , CRYPTO_TFM_REQ_WEAK_KEY ) ; res = crypto_skcipher_setkey ( ctfm , raw_key , keysize ) ; if ( res ) goto out ; if ( cmpxchg ( & inode -> i_crypt_info , NULL , crypt_info ) == NULL ) crypt_info = NULL ; out : if ( res == - ENOKEY ) res = 0 ; put_crypt_info ( crypt_info ) ; kzfree ( raw_key ) ; return res <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_regular_quantize_b_4x4 ( MACROBLOCK * x , int plane , int block , const int16_t * scan , const int16_t * iscan ) { MACROBLOCKD * const xd = & x -> e_mbd ; struct macroblock_plane * p = & x -> plane [ plane ] ; struct macroblockd_plane * pd = & xd -> plane [ plane ] ; <S2SV_StartBug> vp9_quantize_b ( BLOCK_OFFSET ( p -> coeff , block ) , <S2SV_EndBug> 16 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , BLOCK_OFFSET ( p -> qcoeff , block ) , BLOCK_OFFSET ( pd -> dqcoeff , block ) , <S2SV_StartBug> pd -> dequant , p -> zbin_extra , & p -> eobs [ block ] , scan , iscan ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> plane ] ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { vpx_highbd_quantize_b <S2SV_ModEnd> ( BLOCK_OFFSET ( <S2SV_ModStart> -> dequant , & p -> eobs [ block ] , scan , iscan ) ; return ; } # endif vpx_quantize_b ( BLOCK_OFFSET ( p -> coeff , block ) , 16 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , BLOCK_OFFSET ( p -> qcoeff , block ) , BLOCK_OFFSET ( pd -> dqcoeff , block ) , pd -> dequant <S2SV_ModEnd> , & p\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1065\n\n```\nCWE-476 unsigned int ip6t_do_table ( struct sk_buff * skb , const struct nf_hook_state * state , struct xt_table * table ) { unsigned int hook = state -> hook ; static const char nulldevname [ IFNAMSIZ ] __attribute__ ( ( aligned ( sizeof ( long ) ) ) ) ; unsigned int verdict = NF_DROP ; const char * indev , * outdev ; const void * table_base ; struct ip6t_entry * e , * * jumpstack ; unsigned int stackidx , cpu ; const struct xt_table_info * private ; struct xt_action_param acpar ; unsigned int addend ; stackidx = 0 ; indev = state -> in ? state -> in -> name : nulldevname ; outdev = state -> out ? state -> out -> name : nulldevname ; acpar . hotdrop = false ; acpar . state = state ; WARN_ON ( ! ( table -> valid_hooks & ( 1 << hook ) ) ) ; local_bh_disable ( ) ; addend = xt_write_recseq_begin ( ) ; private = READ_ONCE ( table -> private ) ; cpu = smp_processor_id ( ) ; table_base = private -> entries ; jumpstack = ( struct ip6t_entry * * ) private -> jumpstack [ cpu ] ; if ( static_key_false ( & xt_tee_enabled ) ) jumpstack += private -> stacksize * __this_cpu_read ( nf_skb_duplicated ) ; e = get_entry ( table_base , private -> hook_entry [ hook ] ) ; do { const struct xt_entry_target * t ; const struct xt_entry_match * ematch ; struct xt_counters * counter ; WARN_ON ( ! e ) ; acpar . thoff = 0 ; if ( ! ip6_packet_match ( skb , indev , outdev , & e -> ipv6 , & acpar . thoff , & acpar . fragoff , & acpar . hotdrop ) ) { no_match : e = ip6t_next_entry ( e ) ; continue ; } xt_ematch_foreach ( ematch , e ) { acpar . match = ematch -> u . kernel . match ; acpar . matchinfo = ematch -> data ; if ( ! acpar . match -> match ( skb , & acpar ) ) goto no_match ; } counter = xt_get_this_cpu_counter ( & e -> counters ) ; ADD_COUNTER ( * counter , skb -> len , 1 ) ; t = ip6t_get_target_c ( e ) ; WARN_ON ( ! t -> u . kernel . target ) ; # if IS_ENABLED ( CONFIG_NETFILTER_XT_TARGET_TRACE ) if ( unlikely ( skb -> nf_trace ) ) trace_packet ( state -> net , skb , hook , state -> in , state -> out , table -> name , private , e ) ; # endif if ( ! t -> u . kernel . target -> target ) { int v ; v = ( ( struct xt_standard_target * ) t ) -> verdict ; if ( v < 0 ) { if ( v != XT_RETURN ) { verdict = ( unsigned int ) ( - v ) - 1 ; break ; } if ( stackidx == 0 ) e = get_entry ( table_base , private -> underflow [ hook ] ) ; else e = ip6t_next_entry ( jumpstack [ -- stackidx ] ) ; continue ; } if ( table_base + v != ip6t_next_entry ( e ) && ! ( e -> ipv6 . flags & IP6T_F_GOTO ) ) { <S2SV_StartBug> jumpstack [ stackidx ++ ] = e ; <S2SV_EndBug> } e = get_entry ( table_base , v ) ; continue ; } acpar . target = t -> u . kernel . target ; acpar . targinfo = t -> data ; verdict = t -> u . kernel . target -> target ( skb , & acpar ) ; if ( verdict == XT_CONTINUE ) e = ip6t_next_entry ( e ) ; else break ; } while ( ! acpar . hotdrop ) ; xt_write_recseq_end ( addend ) ; local_bh_enable ( ) ; if ( acpar . hotdrop ) return NF_DROP ; else return verdict ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( unlikely ( stackidx >= private -> stacksize ) ) { verdict = NF_DROP ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 static void do_local_notify ( xmlNode * notify_src , const char * client_id , gboolean sync_reply , gboolean from_peer ) { cib_client_t * client_obj = NULL ; int local_rc = pcmk_ok ; if ( client_id != NULL ) { client_obj = g_hash_table_lookup ( client_list , client_id ) ; } else { crm_trace ( \"No<S2SV_blank>client<S2SV_blank>to<S2SV_blank>sent<S2SV_blank>the<S2SV_blank>response<S2SV_blank>to.<S2SV_blank>F_CIB_CLIENTID<S2SV_blank>not<S2SV_blank>set.\" ) ; } if ( client_obj == NULL ) { local_rc = - ECONNRESET ; } else { int rid = 0 ; if ( sync_reply ) { <S2SV_StartBug> CRM_LOG_ASSERT ( client_obj -> request_id ) ; <S2SV_EndBug> rid = client_obj -> request_id ; client_obj -> request_id = 0 ; crm_trace ( \"Sending<S2SV_blank>response<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>%s\" , <S2SV_StartBug> rid , client_obj -> name , from_peer ? \"(originator<S2SV_blank>of<S2SV_blank>delegated<S2SV_blank>request)\" : \"\" ) ; <S2SV_EndBug> } else { crm_trace ( \"Sending<S2SV_blank>an<S2SV_blank>event<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>%s\" , client_obj -> name , from_peer ? \"(originator<S2SV_blank>of<S2SV_blank>delegated<S2SV_blank>request)\" : \"\" ) ; } if ( client_obj -> ipc && crm_ipcs_send ( client_obj -> ipc , rid , notify_src , ! sync_reply ) < 0 ) { local_rc = - ENOMSG ; # ifdef HAVE_GNUTLS_GNUTLS_H } else if ( client_obj -> session ) { crm_send_remote_msg ( client_obj -> session , notify_src , client_obj -> encrypted ) ; # endif } else if ( client_obj -> ipc == NULL ) { crm_err ( \"Unknown<S2SV_blank>transport<S2SV_blank>for<S2SV_blank>%s\" , client_obj -> name ) ; } } if ( local_rc != pcmk_ok && client_obj != NULL ) { crm_warn ( \"%sSync<S2SV_blank>reply<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>failed:<S2SV_blank>%s\" , sync_reply ? \"\" : \"A-\" , client_obj ? client_obj -> name : \"<unknown>\" , pcmk_strerror ( local_rc ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sync_reply ) { if ( client_obj -> ipc ) { <S2SV_ModStart> \"\" ) ; } else { crm_trace ( \"Sending<S2SV_blank>response<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>%s\" , client_obj -> name , from_peer ? \"(originator<S2SV_blank>of<S2SV_blank>delegated<S2SV_blank>request)\" : \"\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14164\n\n```\nCWE-787 static OPJ_BOOL opj_j2k_write_first_tile_part ( opj_j2k_t * p_j2k , OPJ_BYTE * p_data , OPJ_UINT32 * p_data_written , OPJ_UINT32 p_total_data_size , opj_stream_private_t * p_stream , struct opj_event_mgr * p_manager ) { OPJ_UINT32 l_nb_bytes_written = 0 ; OPJ_UINT32 l_current_nb_bytes_written ; OPJ_BYTE * l_begin_data = 00 ; opj_tcd_t * l_tcd = 00 ; opj_cp_t * l_cp = 00 ; l_tcd = p_j2k -> m_tcd ; l_cp = & ( p_j2k -> m_cp ) ; l_tcd -> cur_pino = 0 ; p_j2k -> m_specific_param . m_encoder . m_current_poc_tile_part_number = 0 ; l_current_nb_bytes_written = 0 ; l_begin_data = p_data ; <S2SV_StartBug> if ( ! opj_j2k_write_sot ( p_j2k , p_data , & l_current_nb_bytes_written , p_stream , <S2SV_EndBug> p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; if ( ! OPJ_IS_CINEMA ( l_cp -> rsiz ) ) { # if 0 for ( compno = 1 ; compno < p_j2k -> m_private_image -> numcomps ; compno ++ ) { l_current_nb_bytes_written = 0 ; opj_j2k_write_coc_in_memory ( p_j2k , compno , p_data , & l_current_nb_bytes_written , p_manager ) ; l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_current_nb_bytes_written = 0 ; opj_j2k_write_qcc_in_memory ( p_j2k , compno , p_data , & l_current_nb_bytes_written , p_manager ) ; l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; } # endif if ( l_cp -> tcps [ p_j2k -> m_current_tile_number ] . numpocs ) { l_current_nb_bytes_written = 0 ; opj_j2k_write_poc_in_memory ( p_j2k , p_data , & l_current_nb_bytes_written , p_manager ) ; l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; } } l_current_nb_bytes_written = 0 ; if ( ! opj_j2k_write_sod ( p_j2k , l_tcd , p_data , & l_current_nb_bytes_written , p_total_data_size , p_stream , p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; * p_data_written = l_nb_bytes_written ; opj_write_bytes ( l_begin_data + 6 , l_nb_bytes_written , 4 ) ; if ( OPJ_IS_CINEMA ( l_cp -> rsiz ) ) { opj_j2k_update_tlm ( p_j2k , l_nb_bytes_written ) ; } return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , p_data , p_total_data_size ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2744\n\n```\nCWE-000 static struct sk_buff * nf_ct_frag6_reasm ( struct nf_ct_frag6_queue * fq , struct net_device * dev ) { struct sk_buff * fp , * op , * head = fq -> q . fragments ; int payload_len ; fq_kill ( fq ) ; WARN_ON ( head == NULL ) ; WARN_ON ( NFCT_FRAG6_CB ( head ) -> offset != 0 ) ; payload_len = ( ( head -> data - skb_network_header ( head ) ) - sizeof ( struct ipv6hdr ) + fq -> q . len - sizeof ( struct frag_hdr ) ) ; if ( payload_len > IPV6_MAXPLEN ) { pr_debug ( \"payload<S2SV_blank>len<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.\\\\n\" ) ; goto out_oversize ; } if ( skb_cloned ( head ) && pskb_expand_head ( head , 0 , 0 , GFP_ATOMIC ) ) { pr_debug ( \"skb<S2SV_blank>is<S2SV_blank>cloned<S2SV_blank>but<S2SV_blank>can\\'t<S2SV_blank>expand<S2SV_blank>head\" ) ; goto out_oom ; } if ( skb_has_frags ( head ) ) { struct sk_buff * clone ; int i , plen = 0 ; if ( ( clone = alloc_skb ( 0 , GFP_ATOMIC ) ) == NULL ) { pr_debug ( \"Can\\'t<S2SV_blank>alloc<S2SV_blank>skb\\\\n\" ) ; goto out_oom ; } clone -> next = head -> next ; head -> next = clone ; skb_shinfo ( clone ) -> frag_list = skb_shinfo ( head ) -> frag_list ; skb_frag_list_init ( head ) ; for ( i = 0 ; i < skb_shinfo ( head ) -> nr_frags ; i ++ ) plen += skb_shinfo ( head ) -> frags [ i ] . size ; clone -> len = clone -> data_len = head -> data_len - plen ; head -> data_len -= clone -> len ; head -> len -= clone -> len ; clone -> csum = 0 ; clone -> ip_summed = head -> ip_summed ; NFCT_FRAG6_CB ( clone ) -> orig = NULL ; atomic_add ( clone -> truesize , & nf_init_frags . mem ) ; } skb_network_header ( head ) [ fq -> nhoffset ] = skb_transport_header ( head ) [ 0 ] ; memmove ( head -> head + sizeof ( struct frag_hdr ) , head -> head , ( head -> data - head -> head ) - sizeof ( struct frag_hdr ) ) ; head -> mac_header += sizeof ( struct frag_hdr ) ; head -> network_header += sizeof ( struct frag_hdr ) ; skb_shinfo ( head ) -> frag_list = head -> next ; skb_reset_transport_header ( head ) ; skb_push ( head , head -> data - skb_network_header ( head ) ) ; atomic_sub ( head -> truesize , & nf_init_frags . mem ) ; for ( fp = head -> next ; fp ; fp = fp -> next ) { head -> data_len += fp -> len ; head -> len += fp -> len ; if ( head -> ip_summed != fp -> ip_summed ) head -> ip_summed = CHECKSUM_NONE ; else if ( head -> ip_summed == CHECKSUM_COMPLETE ) head -> csum = csum_add ( head -> csum , fp -> csum ) ; head -> truesize += fp -> truesize ; atomic_sub ( fp -> truesize , & nf_init_frags . mem ) ; } head -> next = NULL ; head -> dev = dev ; head -> tstamp = fq -> q . stamp ; ipv6_hdr ( head ) -> payload_len = htons ( payload_len ) ; if ( head -> ip_summed == CHECKSUM_COMPLETE ) head -> csum = csum_partial ( skb_network_header ( head ) , skb_network_header_len ( head ) , head -> csum ) ; fq -> q . fragments = NULL ; fp = skb_shinfo ( head ) -> frag_list ; <S2SV_StartBug> if ( NFCT_FRAG6_CB ( fp ) -> orig == NULL ) <S2SV_EndBug> fp = fp -> next ; op = NFCT_FRAG6_CB ( head ) -> orig ; for ( ; fp ; fp = fp -> next ) { struct sk_buff * orig = NFCT_FRAG6_CB ( fp ) -> orig ; op -> next = orig ; op = orig ; NFCT_FRAG6_CB ( fp ) -> orig = NULL ; } return head ; out_oversize : if ( net_ratelimit ( ) ) printk ( KERN_DEBUG \"nf_ct_frag6_reasm:<S2SV_blank>payload<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%d\\\\n\" , payload_len ) ; goto out_fail ; out_oom : if ( net_ratelimit ( ) ) printk ( KERN_DEBUG \"nf_ct_frag6_reasm:<S2SV_blank>no<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>reassembly\\\\n\" ) ; out_fail : return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( fp &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2847\n\n```\nCWE-399 void free_pipe_info ( struct pipe_inode_info * pipe ) { <S2SV_StartBug> int i ; <S2SV_EndBug> for ( i = 0 ; i < pipe -> buffers ; i ++ ) { struct pipe_buffer * buf = pipe -> bufs + i ; if ( buf -> ops ) buf -> ops -> release ( pipe , buf ) ; } if ( pipe -> tmp_page ) __free_page ( pipe -> tmp_page ) ; kfree ( pipe -> bufs ) ; kfree ( pipe ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { int i ; account_pipe_buffers ( pipe , pipe -> buffers , 0 ) ; free_uid ( pipe -> user )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t httpReadRequestHeader ( HttpConnection * connection ) { error_t error ; size_t length ; error = socketSetTimeout ( connection -> socket , HTTP_SERVER_IDLE_TIMEOUT ) ; if ( error ) return error ; error = httpReceive ( connection , connection -> buffer , HTTP_SERVER_BUFFER_SIZE - 1 , & length , SOCKET_FLAG_BREAK_CRLF ) ; if ( error ) return error ; error = socketSetTimeout ( connection -> socket , HTTP_SERVER_TIMEOUT ) ; if ( error ) return error ; connection -> buffer [ length ] = '\\\\0' ; TRACE_INFO ( \"%s\" , connection -> buffer ) ; error = httpParseRequestLine ( connection , connection -> buffer ) ; if ( error ) return error ; connection -> request . chunkedEncoding = FALSE ; connection -> request . contentLength = 0 ; # if ( HTTP_SERVER_WEB_SOCKET_SUPPORT == ENABLED ) connection -> request . upgradeWebSocket = FALSE ; connection -> request . connectionUpgrade = FALSE ; osStrcpy ( connection -> request . clientKey , \"\" ) ; # endif if ( connection -> request . version >= HTTP_VERSION_1_0 ) { char_t firstChar ; char_t * separator ; char_t * name ; char_t * value ; firstChar = '\\\\0' ; while ( 1 ) { error = httpReadHeaderField ( connection , connection -> buffer , HTTP_SERVER_BUFFER_SIZE , & firstChar ) ; if ( error ) return error ; TRACE_DEBUG ( \"%s\" , connection -> buffer ) ; if ( ! osStrcmp ( connection -> buffer , \"\\\\r\\\\n\" ) ) break ; <S2SV_StartBug> separator = strchr ( connection -> buffer , ':' ) ; <S2SV_EndBug> if ( separator != NULL ) { * separator = '\\\\0' ; name = strTrimWhitespace ( connection -> buffer ) ; value = strTrimWhitespace ( separator + 1 ) ; httpParseHeaderField ( connection , name , value ) ; } } } if ( connection -> request . chunkedEncoding ) { connection -> request . byteCount = 0 ; connection -> request . firstChunk = TRUE ; connection -> request . lastChunk = FALSE ; } else { connection -> request . byteCount = connection -> request . contentLength ; } return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; separator = osStrchr <S2SV_ModEnd> ( connection ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0178\n\n```\nCWE-20 sds genRedisInfoString ( void ) { sds info ; time_t uptime = time ( NULL ) - server . stat_starttime ; int j ; char hmem [ 64 ] ; struct rusage self_ru , c_ru ; getrusage ( RUSAGE_SELF , & self_ru ) ; getrusage ( RUSAGE_CHILDREN , & c_ru ) ; bytesToHuman ( hmem , zmalloc_used_memory ( ) ) ; info = sdscatprintf ( sdsempty ( ) , \"redis_version:%s\\\\r\\\\n\" \"redis_git_sha1:%s\\\\r\\\\n\" \"redis_git_dirty:%d\\\\r\\\\n\" \"arch_bits:%s\\\\r\\\\n\" \"multiplexing_api:%s\\\\r\\\\n\" \"process_id:%ld\\\\r\\\\n\" \"uptime_in_seconds:%ld\\\\r\\\\n\" \"uptime_in_days:%ld\\\\r\\\\n\" \"lru_clock:%ld\\\\r\\\\n\" \"used_cpu_sys:%.2f\\\\r\\\\n\" \"used_cpu_user:%.2f\\\\r\\\\n\" \"used_cpu_sys_childrens:%.2f\\\\r\\\\n\" \"used_cpu_user_childrens:%.2f\\\\r\\\\n\" \"connected_clients:%d\\\\r\\\\n\" \"connected_slaves:%d\\\\r\\\\n\" \"blocked_clients:%d\\\\r\\\\n\" \"used_memory:%zu\\\\r\\\\n\" \"used_memory_human:%s\\\\r\\\\n\" \"used_memory_rss:%zu\\\\r\\\\n\" \"mem_fragmentation_ratio:%.2f\\\\r\\\\n\" \"use_tcmalloc:%d\\\\r\\\\n\" \"loading:%d\\\\r\\\\n\" \"aof_enabled:%d\\\\r\\\\n\" \"changes_since_last_save:%lld\\\\r\\\\n\" \"bgsave_in_progress:%d\\\\r\\\\n\" \"last_save_time:%ld\\\\r\\\\n\" \"bgrewriteaof_in_progress:%d\\\\r\\\\n\" \"total_connections_received:%lld\\\\r\\\\n\" \"total_commands_processed:%lld\\\\r\\\\n\" \"expired_keys:%lld\\\\r\\\\n\" \"evicted_keys:%lld\\\\r\\\\n\" \"keyspace_hits:%lld\\\\r\\\\n\" \"keyspace_misses:%lld\\\\r\\\\n\" \"hash_max_zipmap_entries:%zu\\\\r\\\\n\" \"hash_max_zipmap_value:%zu\\\\r\\\\n\" \"pubsub_channels:%ld\\\\r\\\\n\" \"pubsub_patterns:%u\\\\r\\\\n\" <S2SV_StartBug> \"vm_enabled:%d\\\\r\\\\n\" <S2SV_EndBug> \"role:%s\\\\r\\\\n\" , REDIS_VERSION , redisGitSHA1 ( ) , strtol ( redisGitDirty ( ) , NULL , 10 ) > 0 , ( sizeof ( long ) == 8 ) ? \"64\" : \"32\" , aeGetApiName ( ) , ( long ) getpid ( ) , uptime , uptime / ( 3600 * 24 ) , ( unsigned long ) server . lruclock , ( float ) self_ru . ru_utime . tv_sec + ( float ) self_ru . ru_utime . tv_usec / 1000000 , ( float ) self_ru . ru_stime . tv_sec + ( float ) self_ru . ru_stime . tv_usec / 1000000 , ( float ) c_ru . ru_utime . tv_sec + ( float ) c_ru . ru_utime . tv_usec / 1000000 , ( float ) c_ru . ru_stime . tv_sec + ( float ) c_ru . ru_stime . tv_usec / 1000000 , listLength ( server . clients ) - listLength ( server . slaves ) , listLength ( server . slaves ) , server . bpop_blocked_clients , zmalloc_used_memory ( ) , hmem , zmalloc_get_rss ( ) , zmalloc_get_fragmentation_ratio ( ) , # ifdef USE_TCMALLOC 1 , # else 0 , # endif server . loading , server . appendonly , server . dirty , server . bgsavechildpid != - 1 , server . lastsave , server . bgrewritechildpid != - 1 , server . stat_numconnections , server . stat_numcommands , server . stat_expiredkeys , server . stat_evictedkeys , server . stat_keyspace_hits , server . stat_keyspace_misses , server . hash_max_zipmap_entries , server . hash_max_zipmap_value , dictSize ( server . pubsub_channels ) , listLength ( server . pubsub_patterns ) , <S2SV_StartBug> server . vm_enabled != 0 , <S2SV_EndBug> server . masterhost == NULL ? \"master\" : \"slave\" ) ; if ( server . masterhost ) { info = sdscatprintf ( info , \"master_host:%s\\\\r\\\\n\" \"master_port:%d\\\\r\\\\n\" \"master_link_status:%s\\\\r\\\\n\" \"master_last_io_seconds_ago:%d\\\\r\\\\n\" \"master_sync_in_progress:%d\\\\r\\\\n\" , server . masterhost , server . masterport , ( server . replstate == REDIS_REPL_CONNECTED ) ? \"up\" : \"down\" , server . master ? ( ( int ) ( time ( NULL ) - server . master -> lastinteraction ) ) : - 1 , server . replstate == REDIS_REPL_TRANSFER ) ; if ( server . replstate == REDIS_REPL_TRANSFER ) { info = sdscatprintf ( info , \"master_sync_left_bytes:%ld\\\\r\\\\n\" \"master_sync_last_io_seconds_ago:%d\\\\r\\\\n\" , ( long ) server . repl_transfer_left , ( int ) ( time ( NULL ) - server . repl_transfer_lastio ) ) ; } } <S2SV_StartBug> if ( server . vm_enabled ) { <S2SV_EndBug> lockThreadedIO ( ) ; info = sdscatprintf ( info , <S2SV_StartBug> \"vm_conf_max_memory:%llu\\\\r\\\\n\" <S2SV_EndBug> \"vm_conf_page_size:%llu\\\\r\\\\n\" \"vm_conf_pages:%llu\\\\r\\\\n\" \"vm_stats_used_pages:%llu\\\\r\\\\n\" \"vm_stats_swapped_objects:%llu\\\\r\\\\n\" \"vm_stats_swappin_count:%llu\\\\r\\\\n\" \"vm_stats_swappout_count:%llu\\\\r\\\\n\" \"vm_stats_io_newjobs_len:%lu\\\\r\\\\n\" \"vm_stats_io_processing_len:%lu\\\\r\\\\n\" \"vm_stats_io_processed_len:%lu\\\\r\\\\n\" \"vm_stats_io_active_threads:%lu\\\\r\\\\n\" \"vm_stats_blocked_clients:%lu\\\\r\\\\n\" <S2SV_StartBug> , ( unsigned long long ) server . vm_max_memory , <S2SV_EndBug> <S2SV_StartBug> ( unsigned long long ) server . vm_page_size , <S2SV_EndBug> ( unsigned long long ) server . vm_pages , ( unsigned long long ) server . vm_stats_used_pages , ( unsigned long long ) server . vm_stats_swapped_objects , ( unsigned long long ) server . vm_stats_swapins , ( unsigned long long ) server . vm_stats_swapouts , ( unsigned long ) listLength ( server . io_newjobs ) , ( unsigned long ) listLength ( server . io_processing ) , ( unsigned long ) listLength ( server . io_processed ) , ( unsigned long ) server . io_active_threads , ( unsigned long ) server . vm_blocked_clients ) ; unlockThreadedIO ( ) ; } if ( server . loading ) { double perc ; time_t eta , elapsed ; off_t remaining_bytes = server . loading_total_bytes - server . loading_loaded_bytes ; perc = ( ( double ) server . loading_loaded_bytes / server . loading_total_bytes ) * 100 ; elapsed = time ( NULL ) - server . loading_start_time ; if ( elapsed == 0 ) { eta = 1 ; } else { eta = ( elapsed * remaining_bytes ) / server . loading_loaded_bytes ; } info = sdscatprintf ( info , \"loading_start_time:%ld\\\\r\\\\n\" \"loading_total_bytes:%llu\\\\r\\\\n\" \"loading_loaded_bytes:%llu\\\\r\\\\n\" \"loading_loaded_perc:%.2f\\\\r\\\\n\" \"loading_eta_seconds:%ld\\\\r\\\\n\" , ( unsigned long ) server . loading_start_time , ( unsigned long long ) server . loading_total_bytes , ( unsigned long long ) server . loading_loaded_bytes , perc , eta ) ; } for ( j = 0 ; j < server . dbnum ; j ++ ) { long long keys , vkeys ; keys = dictSize ( server . db [ j ] . dict ) ; vkeys = dictSize ( server . db [ j ] . expires ) ; if ( keys || vkeys ) { info = sdscatprintf ( info , \"db%d:keys=%lld,expires=%lld\\\\r\\\\n\" , j , keys , vkeys ) ; } } return info ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"hash_max_zipmap_value:%zu\\\\r\\\\n\" \"pubsub_channels:%ld\\\\r\\\\n\" \"pubsub_patterns:%u\\\\r\\\\n\" \"ds_enabled:%d\\\\r\\\\n\" <S2SV_ModEnd> \"role:%s\\\\r\\\\n\" , REDIS_VERSION <S2SV_ModStart> , server . ds_enabled <S2SV_ModEnd> != 0 , <S2SV_ModStart> ( server . ds_enabled <S2SV_ModEnd> ) { lockThreadedIO <S2SV_ModStart> ( info , \"cache_max_memory:%llu\\\\r\\\\n\" \"cache_blocked_clients:%lu\\\\r\\\\n\" <S2SV_ModEnd> , ( unsigned <S2SV_ModStart> ) server . cache_max_memory <S2SV_ModEnd> , ( unsigned <S2SV_ModStart> ( unsigned long ) server . cache_blocked_clients <S2SV_ModEnd> ) ; unlockThreadedIO\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t ftpClientParsePwdReply ( FtpClientContext * context , char_t * path , size_t maxLen ) { size_t length ; char_t * p ; p = strrchr ( context -> buffer , \\'\\\\\"\\' ) ; if ( p == NULL ) return ERROR_INVALID_SYNTAX ; * p = '\\\\0' ; <S2SV_StartBug> p = strchr ( context -> buffer , \\'\\\\\"\\' ) ; <S2SV_EndBug> if ( p == NULL ) return ERROR_INVALID_SYNTAX ; length = osStrlen ( p + 1 ) ; length = MIN ( length , maxLen ) ; osStrncpy ( path , p + 1 , length ) ; path [ length ] = '\\\\0' ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; p = osStrchr <S2SV_ModEnd> ( context ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-78 <S2SV_StartBug> void imap_quote_string ( char * dest , size_t dlen , const char * src ) <S2SV_EndBug> { static const char quote [ ] = \"\\\\\"\\\\\\\\\" ; char * pt = dest ; const char * s = src ; * pt ++ = \\'\"\\' ; dlen -= 2 ; for ( ; * s && dlen ; s ++ ) { if ( strchr ( quote , * s ) ) { dlen -= 2 ; if ( dlen == 0 ) break ; * pt ++ = '\\\\\\\\' ; * pt ++ = * s ; } else { * pt ++ = * s ; dlen -- ; } } * pt ++ = \\'\"\\' ; * pt = '\\\\0' ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * src , bool quote_backtick ) { const char * quote = \"`\\\\\"\\\\\\\\\" ; if ( ! quote_backtick ) quote ++ <S2SV_ModEnd> ; char *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 static inline void header_put_le_short ( SF_PRIVATE * psf , int x ) <S2SV_StartBug> { if ( psf -> headindex < SIGNED_SIZEOF ( psf -> header ) - 2 ) <S2SV_EndBug> <S2SV_StartBug> { psf -> header [ psf -> headindex ++ ] = x ; <S2SV_EndBug> <S2SV_StartBug> psf -> header [ psf -> headindex ++ ] = ( x >> 8 ) ; <S2SV_EndBug> <S2SV_StartBug> } ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x ) { <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . ptr [ <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> [ psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11080\n\n```\nCWE-400 static int session_new ( nghttp2_session * * session_ptr , const nghttp2_session_callbacks * callbacks , void * user_data , int server , const nghttp2_option * option , nghttp2_mem * mem ) { int rv ; size_t nbuffer ; size_t max_deflate_dynamic_table_size = NGHTTP2_HD_DEFAULT_MAX_DEFLATE_BUFFER_SIZE ; if ( mem == NULL ) { mem = nghttp2_mem_default ( ) ; } * session_ptr = nghttp2_mem_calloc ( mem , 1 , sizeof ( nghttp2_session ) ) ; if ( * session_ptr == NULL ) { rv = NGHTTP2_ERR_NOMEM ; goto fail_session ; } ( * session_ptr ) -> mem = * mem ; mem = & ( * session_ptr ) -> mem ; nghttp2_stream_init ( & ( * session_ptr ) -> root , 0 , NGHTTP2_STREAM_FLAG_NONE , NGHTTP2_STREAM_IDLE , NGHTTP2_DEFAULT_WEIGHT , 0 , 0 , NULL , mem ) ; ( * session_ptr ) -> remote_window_size = NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE ; ( * session_ptr ) -> recv_window_size = 0 ; ( * session_ptr ) -> consumed_size = 0 ; ( * session_ptr ) -> recv_reduction = 0 ; ( * session_ptr ) -> local_window_size = NGHTTP2_INITIAL_CONNECTION_WINDOW_SIZE ; ( * session_ptr ) -> goaway_flags = NGHTTP2_GOAWAY_NONE ; ( * session_ptr ) -> local_last_stream_id = ( 1u << 31 ) - 1 ; ( * session_ptr ) -> remote_last_stream_id = ( 1u << 31 ) - 1 ; ( * session_ptr ) -> pending_local_max_concurrent_stream = NGHTTP2_DEFAULT_MAX_CONCURRENT_STREAMS ; ( * session_ptr ) -> pending_enable_push = 1 ; if ( server ) { ( * session_ptr ) -> server = 1 ; } init_settings ( & ( * session_ptr ) -> remote_settings ) ; init_settings ( & ( * session_ptr ) -> local_settings ) ; ( * session_ptr ) -> max_incoming_reserved_streams = NGHTTP2_MAX_INCOMING_RESERVED_STREAMS ; ( * session_ptr ) -> remote_settings . max_concurrent_streams = 100 ; ( * session_ptr ) -> max_send_header_block_length = NGHTTP2_MAX_HEADERSLEN ; ( * session_ptr ) -> max_outbound_ack = NGHTTP2_DEFAULT_MAX_OBQ_FLOOD_ITEM ; <S2SV_StartBug> if ( option ) { <S2SV_EndBug> if ( ( option -> opt_set_mask & NGHTTP2_OPT_NO_AUTO_WINDOW_UPDATE ) && option -> no_auto_window_update ) { ( * session_ptr ) -> opt_flags |= NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE ; } if ( option -> opt_set_mask & NGHTTP2_OPT_PEER_MAX_CONCURRENT_STREAMS ) { ( * session_ptr ) -> remote_settings . max_concurrent_streams = option -> peer_max_concurrent_streams ; } if ( option -> opt_set_mask & NGHTTP2_OPT_MAX_RESERVED_REMOTE_STREAMS ) { ( * session_ptr ) -> max_incoming_reserved_streams = option -> max_reserved_remote_streams ; } if ( ( option -> opt_set_mask & NGHTTP2_OPT_NO_RECV_CLIENT_MAGIC ) && option -> no_recv_client_magic ) { ( * session_ptr ) -> opt_flags |= NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC ; } if ( ( option -> opt_set_mask & NGHTTP2_OPT_NO_HTTP_MESSAGING ) && option -> no_http_messaging ) { ( * session_ptr ) -> opt_flags |= NGHTTP2_OPTMASK_NO_HTTP_MESSAGING ; } if ( option -> opt_set_mask & NGHTTP2_OPT_USER_RECV_EXT_TYPES ) { memcpy ( ( * session_ptr ) -> user_recv_ext_types , option -> user_recv_ext_types , sizeof ( ( * session_ptr ) -> user_recv_ext_types ) ) ; } if ( option -> opt_set_mask & NGHTTP2_OPT_BUILTIN_RECV_EXT_TYPES ) { ( * session_ptr ) -> builtin_recv_ext_types = option -> builtin_recv_ext_types ; } if ( ( option -> opt_set_mask & NGHTTP2_OPT_NO_AUTO_PING_ACK ) && option -> no_auto_ping_ack ) { ( * session_ptr ) -> opt_flags |= NGHTTP2_OPTMASK_NO_AUTO_PING_ACK ; } if ( option -> opt_set_mask & NGHTTP2_OPT_MAX_SEND_HEADER_BLOCK_LENGTH ) { ( * session_ptr ) -> max_send_header_block_length = option -> max_send_header_block_length ; } if ( option -> opt_set_mask & NGHTTP2_OPT_MAX_DEFLATE_DYNAMIC_TABLE_SIZE ) { max_deflate_dynamic_table_size = option -> max_deflate_dynamic_table_size ; } if ( ( option -> opt_set_mask & NGHTTP2_OPT_NO_CLOSED_STREAMS ) && option -> no_closed_streams ) { ( * session_ptr ) -> opt_flags |= NGHTTP2_OPTMASK_NO_CLOSED_STREAMS ; } if ( option -> opt_set_mask & NGHTTP2_OPT_MAX_OUTBOUND_ACK ) { ( * session_ptr ) -> max_outbound_ack = option -> max_outbound_ack ; } <S2SV_StartBug> } <S2SV_EndBug> rv = nghttp2_hd_deflate_init2 ( & ( * session_ptr ) -> hd_deflater , max_deflate_dynamic_table_size , mem ) ; if ( rv != 0 ) { goto fail_hd_deflater ; } rv = nghttp2_hd_inflate_init ( & ( * session_ptr ) -> hd_inflater , mem ) ; if ( rv != 0 ) { goto fail_hd_inflater ; } rv = nghttp2_map_init ( & ( * session_ptr ) -> streams , mem ) ; if ( rv != 0 ) { goto fail_map ; } nbuffer = ( ( * session_ptr ) -> max_send_header_block_length + NGHTTP2_FRAMEBUF_CHUNKLEN - 1 ) / NGHTTP2_FRAMEBUF_CHUNKLEN ; if ( nbuffer == 0 ) { nbuffer = 1 ; } rv = nghttp2_bufs_init3 ( & ( * session_ptr ) -> aob . framebufs , NGHTTP2_FRAMEBUF_CHUNKLEN , nbuffer , 1 , NGHTTP2_FRAME_HDLEN + 1 , mem ) ; if ( rv != 0 ) { goto fail_aob_framebuf ; } active_outbound_item_reset ( & ( * session_ptr ) -> aob , mem ) ; ( * session_ptr ) -> callbacks = * callbacks ; ( * session_ptr ) -> user_data = user_data ; session_inbound_frame_reset ( * session_ptr ) ; if ( nghttp2_enable_strict_preface ) { nghttp2_inbound_frame * iframe = & ( * session_ptr ) -> iframe ; if ( server && ( ( * session_ptr ) -> opt_flags & NGHTTP2_OPTMASK_NO_RECV_CLIENT_MAGIC ) == 0 ) { iframe -> state = NGHTTP2_IB_READ_CLIENT_MAGIC ; iframe -> payloadleft = NGHTTP2_CLIENT_MAGIC_LEN ; } else { iframe -> state = NGHTTP2_IB_READ_FIRST_SETTINGS ; } if ( ! server ) { ( * session_ptr ) -> aob . state = NGHTTP2_OB_SEND_CLIENT_MAGIC ; nghttp2_bufs_add ( & ( * session_ptr ) -> aob . framebufs , NGHTTP2_CLIENT_MAGIC , NGHTTP2_CLIENT_MAGIC_LEN ) ; } } return 0 ; fail_aob_framebuf : nghttp2_map_free ( & ( * session_ptr ) -> streams ) ; fail_map : nghttp2_hd_inflate_free ( & ( * session_ptr ) -> hd_inflater ) ; fail_hd_inflater : nghttp2_hd_deflate_free ( & ( * session_ptr ) -> hd_deflater ) ; fail_hd_deflater : nghttp2_mem_free ( mem , * session_ptr ) ; fail_session : return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NGHTTP2_DEFAULT_MAX_OBQ_FLOOD_ITEM ; ( * session_ptr ) -> max_settings = NGHTTP2_DEFAULT_MAX_SETTINGS ; <S2SV_ModStart> max_outbound_ack ; } if ( ( option -> opt_set_mask & NGHTTP2_OPT_MAX_SETTINGS ) && option -> max_settings ) { ( * session_ptr ) -> max_settings = option -> max_settings ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-532(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5549\n\n```\nCWE-532 static int klsi_105_get_line_state ( struct usb_serial_port * port , unsigned long * line_state_p ) { int rc ; u8 * status_buf ; __u16 status ; dev_info ( & port -> serial -> dev -> dev , \"sending<S2SV_blank>SIO<S2SV_blank>Poll<S2SV_blank>request\\\\n\" ) ; status_buf = kmalloc ( KLSI_STATUSBUF_LEN , GFP_KERNEL ) ; if ( ! status_buf ) return - ENOMEM ; status_buf [ 0 ] = 0xff ; status_buf [ 1 ] = 0xff ; rc = usb_control_msg ( port -> serial -> dev , usb_rcvctrlpipe ( port -> serial -> dev , 0 ) , KL5KUSB105A_SIO_POLL , USB_TYPE_VENDOR | USB_DIR_IN , 0 , 0 , status_buf , KLSI_STATUSBUF_LEN , 10000 ) ; <S2SV_StartBug> if ( rc < 0 ) <S2SV_EndBug> <S2SV_StartBug> dev_err ( & port -> dev , \"Reading<S2SV_blank>line<S2SV_blank>status<S2SV_blank>failed<S2SV_blank>(error<S2SV_blank>=<S2SV_blank>%d)\\\\n\" , <S2SV_EndBug> rc ) ; else { status = get_unaligned_le16 ( status_buf ) ; dev_info ( & port -> serial -> dev -> dev , \"read<S2SV_blank>status<S2SV_blank>%x<S2SV_blank>%x\\\\n\" , status_buf [ 0 ] , status_buf [ 1 ] ) ; * line_state_p = klsi_105_status2linestate ( status ) ; } kfree ( status_buf ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( rc != KLSI_STATUSBUF_LEN ) { <S2SV_ModEnd> dev_err ( & <S2SV_ModStart> -> dev , \"reading<S2SV_blank>line<S2SV_blank>status<S2SV_blank>failed:<S2SV_blank>%d\\\\n\" , rc ) ; if ( rc >= 0 ) rc = - EIO ; } <S2SV_ModEnd> else { status\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void yuvconfig2image ( vpx_image_t * img , const YV12_BUFFER_CONFIG * yv12 , void * user_priv ) { img -> fmt = VPX_IMG_FMT_I420 ; img -> w = yv12 -> y_stride ; img -> h = ( yv12 -> y_height + 2 * VP8BORDERINPIXELS + 15 ) & ~ 15 ; img -> d_w = yv12 -> y_width ; img -> d_h = yv12 -> y_height ; img -> x_chroma_shift = 1 ; img -> y_chroma_shift = 1 ; img -> planes [ VPX_PLANE_Y ] = yv12 -> y_buffer ; img -> planes [ VPX_PLANE_U ] = yv12 -> u_buffer ; img -> planes [ VPX_PLANE_V ] = yv12 -> v_buffer ; img -> planes [ VPX_PLANE_ALPHA ] = NULL ; img -> stride [ VPX_PLANE_Y ] = yv12 -> y_stride ; img -> stride [ VPX_PLANE_U ] = yv12 -> uv_stride ; img -> stride [ VPX_PLANE_V ] = yv12 -> uv_stride ; img -> stride [ VPX_PLANE_ALPHA ] = yv12 -> y_stride ; <S2SV_StartBug> img -> bps = 12 ; <S2SV_EndBug> img -> user_priv = user_priv ; img -> img_data = yv12 -> buffer_alloc ; img -> img_data_owner = 0 ; img -> self_allocd = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; img -> bit_depth = 8 ; img ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2211\n\n```\nCWE-264 SYSCALL_DEFINE5 ( osf_getsysinfo , unsigned long , op , void __user * , buffer , unsigned long , nbytes , int __user * , start , void __user * , arg ) { unsigned long w ; struct percpu_struct * cpu ; switch ( op ) { case GSI_IEEE_FP_CONTROL : w = current_thread_info ( ) -> ieee_state & IEEE_SW_MASK ; w = swcr_update_status ( w , rdfpcr ( ) ) ; if ( put_user ( w , ( unsigned long __user * ) buffer ) ) return - EFAULT ; return 0 ; case GSI_IEEE_STATE_AT_SIGNAL : break ; case GSI_UACPROC : if ( nbytes < sizeof ( unsigned int ) ) return - EINVAL ; w = ( current_thread_info ( ) -> flags >> UAC_SHIFT ) & UAC_BITMASK ; if ( put_user ( w , ( unsigned int __user * ) buffer ) ) return - EFAULT ; return 1 ; case GSI_PROC_TYPE : if ( nbytes < sizeof ( unsigned long ) ) return - EINVAL ; cpu = ( struct percpu_struct * ) ( ( char * ) hwrpb + hwrpb -> processor_offset ) ; w = cpu -> type ; if ( put_user ( w , ( unsigned long __user * ) buffer ) ) return - EFAULT ; return 1 ; case GSI_GET_HWRPB : <S2SV_StartBug> if ( nbytes < sizeof ( * hwrpb ) ) <S2SV_EndBug> return - EINVAL ; if ( copy_to_user ( buffer , hwrpb , nbytes ) != 0 ) return - EFAULT ; return 1 ; default : break ; } return - EOPNOTSUPP ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( nbytes > <S2SV_ModEnd> sizeof ( *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3214\n\n```\nCWE-119 static int pit_ioport_read ( struct kvm_io_device * this , gpa_t addr , int len , void * data ) { struct kvm_pit * pit = dev_to_pit ( this ) ; struct kvm_kpit_state * pit_state = & pit -> pit_state ; struct kvm * kvm = pit -> kvm ; int ret , count ; struct kvm_kpit_channel_state * s ; if ( ! pit_in_range ( addr ) ) return - EOPNOTSUPP ; addr &= KVM_PIT_CHANNEL_MASK ; <S2SV_StartBug> s = & pit_state -> channels [ addr ] ; <S2SV_EndBug> mutex_lock ( & pit_state -> lock ) ; if ( s -> status_latched ) { s -> status_latched = 0 ; ret = s -> status ; } else if ( s -> count_latched ) { switch ( s -> count_latched ) { default : case RW_STATE_LSB : ret = s -> latched_count & 0xff ; s -> count_latched = 0 ; break ; case RW_STATE_MSB : ret = s -> latched_count >> 8 ; s -> count_latched = 0 ; break ; case RW_STATE_WORD0 : ret = s -> latched_count & 0xff ; s -> count_latched = RW_STATE_MSB ; break ; } } else { switch ( s -> read_state ) { default : case RW_STATE_LSB : count = pit_get_count ( kvm , addr ) ; ret = count & 0xff ; break ; case RW_STATE_MSB : count = pit_get_count ( kvm , addr ) ; ret = ( count >> 8 ) & 0xff ; break ; case RW_STATE_WORD0 : count = pit_get_count ( kvm , addr ) ; ret = count & 0xff ; s -> read_state = RW_STATE_WORD1 ; break ; case RW_STATE_WORD1 : count = pit_get_count ( kvm , addr ) ; ret = ( count >> 8 ) & 0xff ; s -> read_state = RW_STATE_WORD0 ; break ; } } if ( len > sizeof ( ret ) ) len = sizeof ( ret ) ; memcpy ( data , ( char * ) & ret , len ) ; mutex_unlock ( & pit_state -> lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> &= KVM_PIT_CHANNEL_MASK ; if ( addr == 3 ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2518\n\n```\nCWE-20 static int tomoyo_mount_acl ( struct tomoyo_request_info * r , char * dev_name , struct path * dir , char * type , unsigned long flags ) { struct path path ; struct file_system_type * fstype = NULL ; const char * requested_type = NULL ; const char * requested_dir_name = NULL ; const char * requested_dev_name = NULL ; struct tomoyo_path_info rtype ; struct tomoyo_path_info rdev ; struct tomoyo_path_info rdir ; int need_dev = 0 ; int error = - ENOMEM ; requested_type = tomoyo_encode ( type ) ; if ( ! requested_type ) goto out ; rtype . name = requested_type ; tomoyo_fill_path_info ( & rtype ) ; requested_dir_name = tomoyo_realpath_from_path ( dir ) ; if ( ! requested_dir_name ) { error = - ENOMEM ; goto out ; } rdir . name = requested_dir_name ; tomoyo_fill_path_info ( & rdir ) ; if ( ! strcmp ( type , TOMOYO_MOUNT_REMOUNT_KEYWORD ) ) { } else if ( ! strcmp ( type , TOMOYO_MOUNT_MAKE_UNBINDABLE_KEYWORD ) || ! strcmp ( type , TOMOYO_MOUNT_MAKE_PRIVATE_KEYWORD ) || ! strcmp ( type , TOMOYO_MOUNT_MAKE_SLAVE_KEYWORD ) || ! strcmp ( type , TOMOYO_MOUNT_MAKE_SHARED_KEYWORD ) ) { } else if ( ! strcmp ( type , TOMOYO_MOUNT_BIND_KEYWORD ) || ! strcmp ( type , TOMOYO_MOUNT_MOVE_KEYWORD ) ) { need_dev = - 1 ; } else { fstype = get_fs_type ( type ) ; if ( ! fstype ) { error = - ENODEV ; goto out ; } if ( fstype -> fs_flags & FS_REQUIRES_DEV ) need_dev = 1 ; } if ( need_dev ) { <S2SV_StartBug> if ( kern_path ( dev_name , LOOKUP_FOLLOW , & path ) ) { <S2SV_EndBug> error = - ENOENT ; goto out ; } requested_dev_name = tomoyo_realpath_from_path ( & path ) ; path_put ( & path ) ; if ( ! requested_dev_name ) { error = - ENOENT ; goto out ; } } else { if ( ! dev_name ) dev_name = \"<NULL>\" ; requested_dev_name = tomoyo_encode ( dev_name ) ; if ( ! requested_dev_name ) { error = - ENOMEM ; goto out ; } } rdev . name = requested_dev_name ; tomoyo_fill_path_info ( & rdev ) ; r -> param_type = TOMOYO_TYPE_MOUNT_ACL ; r -> param . mount . need_dev = need_dev ; r -> param . mount . dev = & rdev ; r -> param . mount . dir = & rdir ; r -> param . mount . type = & rtype ; r -> param . mount . flags = flags ; do { tomoyo_check_acl ( r , tomoyo_check_mount_acl ) ; error = tomoyo_audit_mount_log ( r ) ; } while ( error == TOMOYO_RETRY_REQUEST ) ; out : kfree ( requested_dev_name ) ; kfree ( requested_dir_name ) ; if ( fstype ) put_filesystem ( fstype ) ; kfree ( requested_type ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ! dev_name ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty ast_for_with_stmt ( struct compiling * c , const node * n0 , bool is_async ) { const node * const n = is_async ? CHILD ( n0 , 1 ) : n0 ; <S2SV_StartBug> int i , n_items , end_lineno , end_col_offset ; <S2SV_EndBug> asdl_seq * items , * body ; <S2SV_StartBug> REQ ( n , with_stmt ) ; <S2SV_EndBug> <S2SV_StartBug> n_items = ( NCH ( n ) - 2 ) / 2 ; <S2SV_EndBug> items = _Py_asdl_seq_new ( n_items , c -> c_arena ) ; if ( ! items ) return NULL ; <S2SV_StartBug> for ( i = 1 ; i < NCH ( n ) - 2 ; i += 2 ) { <S2SV_EndBug> withitem_ty item = ast_for_with_item ( c , CHILD ( n , i ) ) ; if ( ! item ) return NULL ; asdl_seq_SET ( items , ( i - 1 ) / 2 , item ) ; } body = ast_for_suite ( c , CHILD ( n , NCH ( n ) - 1 ) ) ; if ( ! body ) return NULL ; get_last_end_pos ( body , & end_lineno , & end_col_offset ) ; <S2SV_StartBug> if ( is_async ) <S2SV_EndBug> <S2SV_StartBug> return AsyncWith ( items , body , LINENO ( n0 ) , n0 -> n_col_offset , <S2SV_EndBug> end_lineno , end_col_offset , c -> c_arena ) ; else <S2SV_StartBug> return With ( items , body , LINENO ( n ) , n -> n_col_offset , <S2SV_EndBug> end_lineno , end_col_offset , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , n_items , nch_minus_type , has_type_comment , <S2SV_ModStart> * body ; string type_comment ; <S2SV_ModStart> with_stmt ) ; has_type_comment = TYPE ( CHILD ( n , NCH ( n ) - 2 ) ) == TYPE_COMMENT ; nch_minus_type = NCH ( n ) - has_type_comment ; <S2SV_ModStart> n_items = ( nch_minus_type <S2SV_ModEnd> - 2 ) <S2SV_ModStart> ; i < nch_minus_type <S2SV_ModEnd> - 2 ; <S2SV_ModStart> ; if ( has_type_comment ) { type_comment = NEW_TYPE_COMMENT ( CHILD ( n , NCH ( n ) - 2 ) ) ; if ( ! type_comment ) return NULL ; } else type_comment = NULL ; if ( <S2SV_ModStart> , body , type_comment , <S2SV_ModStart> items , body , type_comment\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14358\n\n```\nCWE-787 static int msg_parse_fetch ( struct ImapHeader * h , char * s ) { char tmp [ SHORT_STRING ] ; char * ptmp = NULL ; if ( ! s ) return - 1 ; while ( * s ) { SKIPWS ( s ) ; if ( mutt_str_strncasecmp ( \"FLAGS\" , s , 5 ) == 0 ) { s = msg_parse_flags ( h , s ) ; if ( ! s ) return - 1 ; } else if ( mutt_str_strncasecmp ( \"UID\" , s , 3 ) == 0 ) { s += 3 ; SKIPWS ( s ) ; if ( mutt_str_atoui ( s , & h -> data -> uid ) < 0 ) return - 1 ; s = imap_next_word ( s ) ; } else if ( mutt_str_strncasecmp ( \"INTERNALDATE\" , s , 12 ) == 0 ) { s += 12 ; SKIPWS ( s ) ; if ( * s != \\'\\\\\"\\' ) { mutt_debug ( 1 , \"bogus<S2SV_blank>INTERNALDATE<S2SV_blank>entry:<S2SV_blank>%s\\\\n\" , s ) ; return - 1 ; } s ++ ; ptmp = tmp ; <S2SV_StartBug> while ( * s && * s != \\'\\\\\"\\' ) <S2SV_EndBug> * ptmp ++ = * s ++ ; if ( * s != \\'\\\\\"\\' ) return - 1 ; s ++ ; * ptmp = '\\\\0' ; h -> received = mutt_date_parse_imap ( tmp ) ; } else if ( mutt_str_strncasecmp ( \"RFC822.SIZE\" , s , 11 ) == 0 ) { s += 11 ; SKIPWS ( s ) ; ptmp = tmp ; <S2SV_StartBug> while ( isdigit ( ( unsigned char ) * s ) ) <S2SV_EndBug> * ptmp ++ = * s ++ ; * ptmp = '\\\\0' ; if ( mutt_str_atol ( tmp , & h -> content_length ) < 0 ) return - 1 ; } else if ( ( mutt_str_strncasecmp ( \"BODY\" , s , 4 ) == 0 ) || ( mutt_str_strncasecmp ( \"RFC822.HEADER\" , s , 13 ) == 0 ) ) { return - 2 ; } else if ( * s == ')' ) s ++ ; else if ( * s ) { imap_error ( \"msg_parse_fetch\" , s ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * s && ( <S2SV_ModStart> s != \\'\\\\\"\\' ) && ( ptmp != ( tmp + sizeof ( tmp ) - 1 ) ) <S2SV_ModStart> ) * s ) && ( ptmp != ( tmp + sizeof ( tmp ) - 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13042\n\n```\nCWE-125 static int dhcpv6_print ( netdissect_options * ndo , const u_char * cp , u_int length , int indent ) { u_int i , t ; const u_char * tlv , * value ; uint16_t type , optlen ; i = 0 ; while ( i < length ) { <S2SV_StartBug> tlv = cp + i ; <S2SV_EndBug> type = EXTRACT_16BITS ( tlv ) ; optlen = EXTRACT_16BITS ( tlv + 2 ) ; value = tlv + 4 ; ND_PRINT ( ( ndo , \"\\\\n\" ) ) ; for ( t = indent ; t > 0 ; t -- ) ND_PRINT ( ( ndo , \"\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( dh6opt_str , \"Unknown\" , type ) ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>(%u)\" , optlen + 4 ) ) ; <S2SV_EndBug> switch ( type ) { case DH6OPT_DNS_SERVERS : case DH6OPT_SNTP_SERVERS : { if ( optlen % 16 != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , istr ) ) ; return - 1 ; } for ( t = 0 ; t < optlen ; t += 16 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , value + t ) ) ) ; } break ; case DH6OPT_DOMAIN_LIST : { const u_char * tp = value ; while ( tp < value + optlen ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ( tp = ns_nprint ( ndo , tp , value + optlen ) ) == NULL ) return - 1 ; } } break ; } i += 4 + optlen ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length ) { if ( i + 4 > length ) return - 1 ; <S2SV_ModStart> 4 ) ) ; if ( i + 4 + optlen > length ) return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9423\n\n```\nCWE-200 static bool_t svcauth_gss_accept_sec_context ( struct svc_req * rqst , struct rpc_gss_init_res * gr ) { struct svc_rpc_gss_data * gd ; struct rpc_gss_cred * gc ; gss_buffer_desc recv_tok , seqbuf ; gss_OID mech ; OM_uint32 maj_stat = 0 , min_stat = 0 , ret_flags , seq ; log_debug ( \"in<S2SV_blank>svcauth_gss_accept_context()\" ) ; gd = SVCAUTH_PRIVATE ( rqst -> rq_xprt -> xp_auth ) ; gc = ( struct rpc_gss_cred * ) rqst -> rq_clntcred ; memset ( gr , 0 , sizeof ( * gr ) ) ; memset ( & recv_tok , 0 , sizeof ( recv_tok ) ) ; if ( ! svc_getargs ( rqst -> rq_xprt , xdr_rpc_gss_init_args , ( caddr_t ) & recv_tok ) ) return ( FALSE ) ; gr -> gr_major = gss_accept_sec_context ( & gr -> gr_minor , & gd -> ctx , svcauth_gss_creds , & recv_tok , GSS_C_NO_CHANNEL_BINDINGS , & gd -> client_name , & mech , & gr -> gr_token , & ret_flags , NULL , NULL ) ; svc_freeargs ( rqst -> rq_xprt , xdr_rpc_gss_init_args , ( caddr_t ) & recv_tok ) ; log_status ( \"accept_sec_context\" , gr -> gr_major , gr -> gr_minor ) ; if ( gr -> gr_major != GSS_S_COMPLETE && gr -> gr_major != GSS_S_CONTINUE_NEEDED ) { badauth ( gr -> gr_major , gr -> gr_minor , rqst -> rq_xprt ) ; gd -> ctx = GSS_C_NO_CONTEXT ; goto errout ; } <S2SV_StartBug> if ( ( gr -> gr_ctx . value = mem_alloc ( sizeof ( gss_union_ctx_id_desc ) ) ) == NULL ) { <S2SV_EndBug> fprintf ( stderr , \"svcauth_gss_accept_context:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; goto errout ; } <S2SV_StartBug> memcpy ( gr -> gr_ctx . value , gd -> ctx , sizeof ( gss_union_ctx_id_desc ) ) ; <S2SV_EndBug> gr -> gr_ctx . length = sizeof ( gss_union_ctx_id_desc ) ; gr -> gr_win = sizeof ( gd -> seqmask ) * 8 ; gd -> sec . mech = mech ; gd -> sec . qop = GSS_C_QOP_DEFAULT ; gd -> sec . svc = gc -> gc_svc ; gd -> seq = gc -> gc_seq ; gd -> win = gr -> gr_win ; if ( gr -> gr_major == GSS_S_COMPLETE ) { # ifdef SPKM if ( ! g_OID_equal ( gss_mech_spkm3 , mech ) ) { # endif maj_stat = gss_display_name ( & min_stat , gd -> client_name , & gd -> cname , & gd -> sec . mech ) ; # ifdef SPKM } # endif if ( maj_stat != GSS_S_COMPLETE ) { log_status ( \"display_name\" , maj_stat , min_stat ) ; goto errout ; } # ifdef DEBUG # ifdef HAVE_HEIMDAL log_debug ( \"accepted<S2SV_blank>context<S2SV_blank>for<S2SV_blank>%.*s<S2SV_blank>with<S2SV_blank>\" \"<mech<S2SV_blank>{},<S2SV_blank>qop<S2SV_blank>%d,<S2SV_blank>svc<S2SV_blank>%d>\" , gd -> cname . length , ( char * ) gd -> cname . value , gd -> sec . qop , gd -> sec . svc ) ; # else { gss_buffer_desc mechname ; gss_oid_to_str ( & min_stat , mech , & mechname ) ; log_debug ( \"accepted<S2SV_blank>context<S2SV_blank>for<S2SV_blank>%.*s<S2SV_blank>with<S2SV_blank>\" \"<mech<S2SV_blank>%.*s,<S2SV_blank>qop<S2SV_blank>%d,<S2SV_blank>svc<S2SV_blank>%d>\" , gd -> cname . length , ( char * ) gd -> cname . value , mechname . length , ( char * ) mechname . value , gd -> sec . qop , gd -> sec . svc ) ; gss_release_buffer ( & min_stat , & mechname ) ; } # endif # endif seq = htonl ( gr -> gr_win ) ; seqbuf . value = & seq ; seqbuf . length = sizeof ( seq ) ; gss_release_buffer ( & min_stat , & gd -> checksum ) ; maj_stat = gss_sign ( & min_stat , gd -> ctx , GSS_C_QOP_DEFAULT , & seqbuf , & gd -> checksum ) ; if ( maj_stat != GSS_S_COMPLETE ) { goto errout ; } rqst -> rq_xprt -> xp_verf . oa_flavor = RPCSEC_GSS ; rqst -> rq_xprt -> xp_verf . oa_base = gd -> checksum . value ; rqst -> rq_xprt -> xp_verf . oa_length = gd -> checksum . length ; } return ( TRUE ) ; errout : gss_release_buffer ( & min_stat , & gr -> gr_token ) ; return ( FALSE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> errout ; } <S2SV_ModEnd> gr -> gr_ctx <S2SV_ModStart> . value = \"xxxx\" ; <S2SV_ModEnd> gr -> gr_ctx <S2SV_ModStart> -> gr_ctx . length = 4 <S2SV_ModEnd> ; gr ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static void parse_content_range ( URLContext * h , const char * p ) { HTTPContext * s = h -> priv_data ; const char * slash ; if ( ! strncmp ( p , \"bytes<S2SV_blank>\" , 6 ) ) { p += 6 ; <S2SV_StartBug> s -> off = strtoll ( p , NULL , 10 ) ; <S2SV_EndBug> if ( ( slash = strchr ( p , '/' ) ) && strlen ( slash ) > 0 ) <S2SV_StartBug> s -> filesize = strtoll ( slash + 1 , NULL , 10 ) ; <S2SV_EndBug> } if ( s -> seekable == - 1 && ( ! s -> is_akamai || s -> filesize != 2147483647 ) ) h -> is_streamed = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> off = strtoull <S2SV_ModEnd> ( p , <S2SV_ModStart> -> filesize = strtoull <S2SV_ModEnd> ( slash +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9143\n\n```\nCWE-772 static Image * ReadARTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { const unsigned char * pixels ; Image * image ; QuantumInfo * quantum_info ; MagickBooleanType status ; size_t length ; ssize_t count , y ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 1 ; image -> endian = MSBEndian ; ( void ) ReadBlobLSBShort ( image ) ; image -> columns = ( size_t ) ReadBlobLSBShort ( image ) ; ( void ) ReadBlobLSBShort ( image ) ; image -> rows = ( size_t ) ReadBlobLSBShort ( image ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; SetImageColorspace ( image , GRAYColorspace , exception ) ; quantum_info = AcquireQuantumInfo ( image_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; length = GetQuantumExtent ( image , quantum_info , GrayQuantum ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register Quantum * magick_restrict q ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; if ( count != ( ssize_t ) length ) <S2SV_StartBug> ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; <S2SV_EndBug> ( void ) ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , GrayQuantum , pixels , exception ) ; pixels = ( const unsigned char * ) ReadBlobStream ( image , ( size_t ) ( - ( ssize_t ) length ) & 0x01 , GetQuantumPixels ( quantum_info ) , & count ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( SetImageProgress ( image , LoadImageTag , y , image -> rows ) == MagickFalse ) break ; } SetQuantumImageType ( image , GrayQuantum ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) length ) { quantum_info = DestroyQuantumInfo ( quantum_info ) ; <S2SV_ModStart> \"UnableToReadImageData\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_rc_drop_frame ( VP9_COMP * cpi ) { <S2SV_StartBug> const VP9_CONFIG * oxcf = & cpi -> oxcf ; <S2SV_EndBug> RATE_CONTROL * const rc = & cpi -> rc ; if ( ! oxcf -> drop_frames_water_mark ) { return 0 ; } else { if ( rc -> buffer_level < 0 ) { return 1 ; } else { int drop_mark = ( int ) ( oxcf -> drop_frames_water_mark * <S2SV_StartBug> oxcf -> optimal_buffer_level / 100 ) ; <S2SV_EndBug> if ( ( rc -> buffer_level > drop_mark ) && ( rc -> decimation_factor > 0 ) ) { -- rc -> decimation_factor ; } else if ( rc -> buffer_level <= drop_mark && rc -> decimation_factor == 0 ) { rc -> decimation_factor = 1 ; } if ( rc -> decimation_factor > 0 ) { if ( rc -> decimation_count > 0 ) { -- rc -> decimation_count ; return 1 ; } else { rc -> decimation_count = rc -> decimation_factor ; return 0 ; } } else { rc -> decimation_count = 0 ; return 0 ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { const VP9EncoderConfig <S2SV_ModEnd> * oxcf = <S2SV_ModStart> -> drop_frames_water_mark * rc <S2SV_ModEnd> -> optimal_buffer_level /\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12894\n\n```\nCWE-125 const char * le64addr_string ( netdissect_options * ndo , const u_char * ep ) { const unsigned int len = 8 ; register u_int i ; register char * cp ; <S2SV_StartBug> register struct enamemem * tp ; <S2SV_EndBug> char buf [ BUFSIZE ] ; tp = lookup_bytestring ( ndo , ep , len ) ; <S2SV_StartBug> if ( tp -> e_name ) <S2SV_EndBug> <S2SV_StartBug> return ( tp -> e_name ) ; <S2SV_EndBug> cp = buf ; for ( i = len ; i > 0 ; -- i ) { * cp ++ = hex [ * ( ep + i - 1 ) >> 4 ] ; * cp ++ = hex [ * ( ep + i - 1 ) & 0xf ] ; * cp ++ = ':' ; } cp -- ; * cp = '\\\\0' ; <S2SV_StartBug> tp -> e_name = strdup ( buf ) ; <S2SV_EndBug> <S2SV_StartBug> if ( tp -> e_name == NULL ) <S2SV_EndBug> ( * ndo -> ndo_error ) ( ndo , \"le64addr_string:<S2SV_blank>strdup(buf)\" ) ; <S2SV_StartBug> return ( tp -> e_name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; register struct bsnamemem <S2SV_ModEnd> * tp ; <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> ) return ( <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> ) ; cp <S2SV_ModStart> ; tp -> bs_name <S2SV_ModEnd> = strdup ( <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static int can_open_cached ( struct nfs4_state * state , int mode ) <S2SV_EndBug> { int ret = 0 ; <S2SV_StartBug> switch ( mode & ( FMODE_READ | FMODE_WRITE | O_EXCL ) ) { <S2SV_EndBug> case FMODE_READ : ret |= test_bit ( NFS_O_RDONLY_STATE , & state -> flags ) != 0 ; break ; case FMODE_WRITE : ret |= test_bit ( NFS_O_WRONLY_STATE , & state -> flags ) != 0 ; break ; case FMODE_READ | FMODE_WRITE : ret |= test_bit ( NFS_O_RDWR_STATE , & state -> flags ) != 0 ; } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * state , fmode_t mode , int open_mode <S2SV_ModEnd> ) { int <S2SV_ModStart> = 0 ; if ( open_mode & O_EXCL ) goto out ; <S2SV_ModStart> FMODE_READ | FMODE_WRITE <S2SV_ModEnd> ) ) { <S2SV_ModStart> 0 ; } out :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 int oe_iov_sync ( const struct oe_iovec * iov , int iovcnt , const void * buf_ , size_t buf_size ) { struct oe_iovec * buf = ( struct oe_iovec * ) buf_ ; int ret = - 1 ; int i ; size_t n ; if ( iovcnt < 0 || ( iovcnt > 0 && ! iov ) ) goto done ; for ( i = 0 , n = buf_size ; i < iovcnt ; i ++ ) { if ( buf [ i ] . iov_len != iov [ i ] . iov_len ) goto done ; if ( buf [ i ] . iov_len ) { if ( buf [ i ] . iov_base && ! iov [ i ] . iov_base ) goto done ; if ( ! buf [ i ] . iov_base && iov [ i ] . iov_base ) goto done ; if ( ! buf [ i ] . iov_base ) continue ; if ( n < buf [ i ] . iov_len ) goto done ; { uint8_t * src = ( uint8_t * ) buf [ i ] . iov_base + ( uint64_t ) buf ; size_t src_size = buf [ i ] . iov_len ; uint8_t * dest = ( uint8_t * ) iov [ i ] . iov_base ; size_t dest_size = iov [ i ] . iov_len ; if ( src_size != dest_size ) goto done ; <S2SV_StartBug> if ( src < ( uint8_t * ) buf || src > ( uint8_t * ) buf + buf_size ) <S2SV_EndBug> goto done ; if ( oe_memcpy_s ( dest , dest_size , src , src_size ) != OE_OK ) goto done ; } } n -= buf [ i ] . iov_len ; } ret = 0 ; done : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buf || src + src_size < src || src + src_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4913\n\n```\nCWE-20 static int rose_parse_ccitt ( unsigned char * p , struct rose_facilities_struct * facilities , int len ) { unsigned char l , n = 0 ; char callsign [ 11 ] ; do { switch ( * p & 0xC0 ) { case 0x00 : p += 2 ; n += 2 ; len -= 2 ; break ; case 0x40 : p += 3 ; n += 3 ; len -= 3 ; break ; case 0x80 : p += 4 ; n += 4 ; len -= 4 ; break ; case 0xC0 : l = p [ 1 ] ; <S2SV_StartBug> if ( * p == FAC_CCITT_DEST_NSAP ) { <S2SV_EndBug> memcpy ( & facilities -> source_addr , p + 7 , ROSE_ADDR_LEN ) ; memcpy ( callsign , p + 12 , l - 10 ) ; callsign [ l - 10 ] = '\\\\0' ; asc2ax ( & facilities -> source_call , callsign ) ; } if ( * p == FAC_CCITT_SRC_NSAP ) { memcpy ( & facilities -> dest_addr , p + 7 , ROSE_ADDR_LEN ) ; memcpy ( callsign , p + 12 , l - 10 ) ; callsign [ l - 10 ] = '\\\\0' ; asc2ax ( & facilities -> dest_call , callsign ) ; } p += l + 2 ; n += l + 2 ; len -= l + 2 ; break ; } } while ( * p != 0x00 && len > 0 ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( l < 10 || l > 20 ) return - 1 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 SQLITE_PRIVATE With * sqlite3WithAdd ( Parse * pParse , With * pWith , Token * pName , ExprList * pArglist , Select * pQuery ) { sqlite3 * db = pParse -> db ; With * pNew ; char * zName ; zName = sqlite3NameFromToken ( pParse -> db , pName ) ; if ( zName && pWith ) { int i ; for ( i = 0 ; i < pWith -> nCte ; i ++ ) { if ( sqlite3StrICmp ( zName , pWith -> a [ i ] . zName ) == 0 ) { sqlite3ErrorMsg ( pParse , \"duplicate<S2SV_blank>WITH<S2SV_blank>table<S2SV_blank>name:<S2SV_blank>%s\" , zName ) ; } } } if ( pWith ) { <S2SV_StartBug> int nByte = sizeof ( * pWith ) + ( sizeof ( pWith -> a [ 1 ] ) * pWith -> nCte ) ; <S2SV_EndBug> pNew = sqlite3DbRealloc ( db , pWith , nByte ) ; } else { pNew = sqlite3DbMallocZero ( db , sizeof ( * pWith ) ) ; } assert ( ( pNew != 0 && zName != 0 ) || db -> mallocFailed ) ; if ( db -> mallocFailed ) { sqlite3ExprListDelete ( db , pArglist ) ; sqlite3SelectDelete ( db , pQuery ) ; sqlite3DbFree ( db , zName ) ; pNew = pWith ; } else { pNew -> a [ pNew -> nCte ] . pSelect = pQuery ; pNew -> a [ pNew -> nCte ] . pCols = pArglist ; pNew -> a [ pNew -> nCte ] . zName = zName ; pNew -> a [ pNew -> nCte ] . zCteErr = 0 ; pNew -> nCte ++ ; } return pNew ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pWith ) { sqlite3_int64 <S2SV_ModEnd> nByte = sizeof\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2211\n\n```\nCWE-264 SYSCALL_DEFINE3 ( osf_sysinfo , int , command , char __user * , buf , long , count ) { const char * sysinfo_table [ ] = { utsname ( ) -> sysname , utsname ( ) -> nodename , utsname ( ) -> release , utsname ( ) -> version , utsname ( ) -> machine , \"alpha\" , \"dummy\" , \"dummy\" , \"dummy\" , } ; unsigned long offset ; const char * res ; long len , err = - EINVAL ; offset = command - 1 ; if ( offset >= ARRAY_SIZE ( sysinfo_table ) ) { printk ( \"sysinfo(%d)\" , command ) ; goto out ; } down_read ( & uts_sem ) ; res = sysinfo_table [ offset ] ; len = strlen ( res ) + 1 ; <S2SV_StartBug> if ( len > count ) <S2SV_EndBug> len = count ; if ( copy_to_user ( buf , res , len ) ) err = - EFAULT ; else err = 0 ; up_read ( & uts_sem ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( unsigned long ) len > ( unsigned long ) <S2SV_ModEnd> count ) len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15166\n\n```\nCWE-20 void lmp_print ( netdissect_options * ndo , register const u_char * pptr , register u_int len ) { const struct lmp_common_header * lmp_com_header ; const struct lmp_object_header * lmp_obj_header ; const u_char * tptr , * obj_tptr ; u_int tlen , lmp_obj_len , lmp_obj_ctype , obj_tlen ; int hexdump , ret ; u_int offset ; u_int link_type ; union { float f ; uint32_t i ; } bw ; tptr = pptr ; lmp_com_header = ( const struct lmp_common_header * ) pptr ; ND_TCHECK ( * lmp_com_header ) ; if ( LMP_EXTRACT_VERSION ( lmp_com_header -> version_res [ 0 ] ) != LMP_VERSION ) { ND_PRINT ( ( ndo , \"LMP<S2SV_blank>version<S2SV_blank>%u<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , LMP_EXTRACT_VERSION ( lmp_com_header -> version_res [ 0 ] ) ) ) ; return ; } if ( ndo -> ndo_vflag < 1 ) { ND_PRINT ( ( ndo , \"LMPv%u<S2SV_blank>%s<S2SV_blank>Message,<S2SV_blank>length:<S2SV_blank>%u\" , LMP_EXTRACT_VERSION ( lmp_com_header -> version_res [ 0 ] ) , tok2str ( lmp_msg_type_values , \"unknown<S2SV_blank>(%u)\" , lmp_com_header -> msg_type ) , len ) ) ; return ; } tlen = EXTRACT_16BITS ( lmp_com_header -> length ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\tLMPv%u,<S2SV_blank>msg-type:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[%s],<S2SV_blank>length:<S2SV_blank>%u\" , LMP_EXTRACT_VERSION ( lmp_com_header -> version_res [ 0 ] ) , tok2str ( lmp_msg_type_values , \"unknown,<S2SV_blank>type:<S2SV_blank>%u\" , lmp_com_header -> msg_type ) , bittok2str ( lmp_header_flag_values , \"none\" , lmp_com_header -> flags ) , tlen ) ) ; if ( tlen < sizeof ( const struct lmp_common_header ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short)\" ) ) ; return ; } if ( tlen > len ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>long)\" ) ) ; tlen = len ; } tptr += sizeof ( const struct lmp_common_header ) ; tlen -= sizeof ( const struct lmp_common_header ) ; while ( tlen > 0 ) { ND_TCHECK2 ( * tptr , sizeof ( struct lmp_object_header ) ) ; lmp_obj_header = ( const struct lmp_object_header * ) tptr ; lmp_obj_len = EXTRACT_16BITS ( lmp_obj_header -> length ) ; lmp_obj_ctype = ( lmp_obj_header -> ctype ) & 0x7f ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Object<S2SV_blank>(%u),<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u)<S2SV_blank>Flags:<S2SV_blank>[%snegotiable],<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( lmp_obj_values , \"Unknown\" , lmp_obj_header -> class_num ) , lmp_obj_header -> class_num , tok2str ( lmp_ctype_values , \"Unknown\" , ( ( lmp_obj_header -> class_num ) << 8 ) + lmp_obj_ctype ) , lmp_obj_ctype , ( lmp_obj_header -> ctype ) & 0x80 ? \"\" : \"non-\" , lmp_obj_len ) ) ; if ( lmp_obj_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short)\" ) ) ; return ; } if ( ( lmp_obj_len % 4 ) != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4)\" ) ) ; return ; } obj_tptr = tptr + sizeof ( struct lmp_object_header ) ; obj_tlen = lmp_obj_len - sizeof ( struct lmp_object_header ) ; ND_TCHECK2 ( * tptr , lmp_obj_len ) ; hexdump = FALSE ; switch ( lmp_obj_header -> class_num ) { case LMP_OBJ_CC_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_LOC : case LMP_CTYPE_RMT : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Control<S2SV_blank>Channel<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_LINK_ID : case LMP_OBJ_INTERFACE_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4_LOC : case LMP_CTYPE_IPV4_RMT : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Link<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; case LMP_CTYPE_IPV6_LOC : case LMP_CTYPE_IPV6_RMT : if ( obj_tlen != 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Link<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; case LMP_CTYPE_UNMD_LOC : case LMP_CTYPE_UNMD_RMT : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Link<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_MESSAGE_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_1 : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; case LMP_CTYPE_2 : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message<S2SV_blank>ID<S2SV_blank>Ack:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_NODE_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_LOC : case LMP_CTYPE_RMT : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Node<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_CONFIG : switch ( lmp_obj_ctype ) { case LMP_CTYPE_HELLO_CONFIG : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Hello<S2SV_blank>Interval:<S2SV_blank>%u\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Hello<S2SV_blank>Dead<S2SV_blank>Interval:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_HELLO : switch ( lmp_obj_ctype ) { case LMP_CTYPE_HELLO : if ( obj_tlen != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tx<S2SV_blank>Seq:<S2SV_blank>%u,<S2SV_blank>Rx<S2SV_blank>Seq:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_TE_LINK : switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4 : if ( obj_tlen != 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_te_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; break ; case LMP_CTYPE_IPV6 : if ( obj_tlen != 36 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_te_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_32BITS ( obj_tptr + 20 ) ) ) ; break ; case LMP_CTYPE_UNMD : if ( obj_tlen != 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_te_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Link-ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Link-ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_DATA_LINK : switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4 : if ( obj_tlen < 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_data_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; ret = lmp_print_data_link_subobjs ( ndo , obj_tptr , obj_tlen - 12 , 12 ) ; if ( ret == - 1 ) goto trunc ; if ( ret == TRUE ) hexdump = TRUE ; break ; case LMP_CTYPE_IPV6 : if ( obj_tlen < 36 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_data_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_32BITS ( obj_tptr + 20 ) ) ) ; ret = lmp_print_data_link_subobjs ( ndo , obj_tptr , obj_tlen - 36 , 36 ) ; if ( ret == - 1 ) goto trunc ; if ( ret == TRUE ) hexdump = TRUE ; break ; case LMP_CTYPE_UNMD : if ( obj_tlen < 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_data_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; ret = lmp_print_data_link_subobjs ( ndo , obj_tptr , obj_tlen - 12 , 12 ) ; if ( ret == - 1 ) goto trunc ; if ( ret == TRUE ) hexdump = TRUE ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_VERIFY_BEGIN : switch ( lmp_obj_ctype ) { case LMP_CTYPE_1 : if ( obj_tlen != 20 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_begin_verify_flag_values , \"none\" , EXTRACT_16BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Interval:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Data<S2SV_blank>links:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Encoding<S2SV_blank>type:<S2SV_blank>%s\" , tok2str ( gmpls_encoding_values , \"Unknown\" , * ( obj_tptr + 8 ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Transport<S2SV_blank>Mechanism:<S2SV_blank>%u<S2SV_blank>(0x%x)%s\" , EXTRACT_16BITS ( obj_tptr + 10 ) , EXTRACT_16BITS ( obj_tptr + 10 ) , EXTRACT_16BITS ( obj_tptr + 10 ) & 8000 ? \"<S2SV_blank>(Payload<S2SV_blank>test<S2SV_blank>messages<S2SV_blank>capable)\" : \"\" ) ) ; bw . i = EXTRACT_32BITS ( obj_tptr + 12 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Transmission<S2SV_blank>Rate:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Wavelength:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr + 16 ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_VERIFY_BEGIN_ACK : switch ( lmp_obj_ctype ) { case LMP_CTYPE_1 : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Dead<S2SV_blank>Interval:<S2SV_blank>%u\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Transport<S2SV_blank>Response:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_VERIFY_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_1 : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>ID:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_CHANNEL_STATUS : switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4 : offset = 0 ; while ( offset + 8 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Active:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ? \"Allocated\" : \"Non-allocated\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Direction:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ? \"Transmit\" : \"Receive\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Channel<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_obj_channel_status_values , \"Unknown\" , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) ) ; offset += 8 ; } break ; case LMP_CTYPE_IPV6 : offset = 0 ; while ( offset + 20 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Active:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 16 ) >> 31 ) ? \"Allocated\" : \"Non-allocated\" , ( EXTRACT_32BITS ( obj_tptr + offset + 16 ) >> 31 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Direction:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 16 ) >> 30 ) & 0x1 ? \"Transmit\" : \"Receive\" , ( EXTRACT_32BITS ( obj_tptr + offset + 16 ) >> 30 ) & 0x1 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Channel<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_obj_channel_status_values , \"Unknown\" , EXTRACT_32BITS ( obj_tptr + offset + 16 ) & 0x3FFFFFF ) , EXTRACT_32BITS ( obj_tptr + offset + 16 ) & 0x3FFFFFF ) ) ; offset += 20 ; } break ; case LMP_CTYPE_UNMD : offset = 0 ; while ( offset + 8 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Active:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ? \"Allocated\" : \"Non-allocated\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Direction:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ? \"Transmit\" : \"Receive\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Channel<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_obj_channel_status_values , \"Unknown\" , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) ) ; offset += 8 ; } break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_CHANNEL_STATUS_REQ : switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4 : offset = 0 ; while ( offset + 4 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; offset += 4 ; } break ; case LMP_CTYPE_IPV6 : offset = 0 ; while ( offset + 16 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; offset += 16 ; } break ; case LMP_CTYPE_UNMD : offset = 0 ; while ( offset + 4 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; offset += 4 ; } break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_ERROR_CODE : switch ( lmp_obj_ctype ) { case LMP_CTYPE_BEGIN_VERIFY_ERROR : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s\" , bittok2str ( lmp_obj_begin_verify_error_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; break ; case LMP_CTYPE_LINK_SUMMARY_ERROR : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s\" , bittok2str ( lmp_obj_link_summary_error_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_SERVICE_CONFIG : switch ( lmp_obj_ctype ) { case LMP_CTYPE_SERVICE_CONFIG_SP : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_sp_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>UNI<S2SV_blank>Version:<S2SV_blank>%u\" , EXTRACT_8BITS ( obj_tptr + 1 ) ) ) ; break ; case LMP_CTYPE_SERVICE_CONFIG_CPSA : if ( obj_tlen != 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } link_type = EXTRACT_8BITS ( obj_tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Link<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_link_type_values , \"Unknown\" , link_type ) , link_type ) ) ; switch ( link_type ) { case LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SDH : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Signal<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_signal_type_sdh_values , \"Unknown\" , EXTRACT_8BITS ( obj_tptr + 1 ) ) , EXTRACT_8BITS ( obj_tptr + 1 ) ) ) ; break ; case LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SONET : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Signal<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_signal_type_sonet_values , \"Unknown\" , EXTRACT_8BITS ( obj_tptr + 1 ) ) , EXTRACT_8BITS ( obj_tptr + 1 ) ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Transparency:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_cpsa_tp_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Contiguous<S2SV_blank>Concatenation<S2SV_blank>Types:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_cpsa_cct_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr + 3 ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Minimum<S2SV_blank>NCC:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr + 4 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Maximum<S2SV_blank>NCC:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Minimum<S2SV_blank>NVC:%u\" , EXTRACT_16BITS ( obj_tptr + 8 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Maximum<S2SV_blank>NVC:%u\" , EXTRACT_16BITS ( obj_tptr + 10 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + 12 ) , EXTRACT_32BITS ( obj_tptr + 12 ) ) ) ; break ; case LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM : if ( obj_tlen != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Transparency<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_nsa_transparency_flag_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>TCM<S2SV_blank>Monitoring<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_nsa_tcm_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr + 7 ) ) ) ) ; break ; case LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Diversity:<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_nsa_network_diversity_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr + 3 ) ) ) ) ; break ; default : hexdump = TRUE ; } break ; default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 || hexdump == TRUE ) print_unknown_data ( ndo , tptr + sizeof ( struct lmp_object_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , lmp_obj_len - sizeof ( struct lmp_object_header ) ) ; tptr += lmp_obj_len ; tlen -= lmp_obj_len ; } return ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>exceeded<S2SV_blank>snapshot\" ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"%s\" , tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0203\n\n```\nCWE-416 static __always_inline int __do_follow_link ( struct path * path , struct nameidata * nd ) { int error ; void * cookie ; struct dentry * dentry = path -> dentry ; touch_atime ( path -> mnt , dentry ) ; nd_set_link ( nd , NULL ) ; if ( path -> mnt != nd -> path . mnt ) { path_to_nameidata ( path , nd ) ; dget ( dentry ) ; } mntget ( path -> mnt ) ; <S2SV_StartBug> cookie = dentry -> d_inode -> i_op -> follow_link ( dentry , nd ) ; <S2SV_EndBug> error = PTR_ERR ( cookie ) ; if ( ! IS_ERR ( cookie ) ) { char * s = nd_get_link ( nd ) ; error = 0 ; if ( s ) error = __vfs_follow_link ( nd , s ) ; else if ( nd -> last_type == LAST_BIND ) { error = force_reval_path ( & nd -> path , nd ) ; if ( error ) path_put ( & nd -> path ) ; } if ( dentry -> d_inode -> i_op -> put_link ) dentry -> d_inode -> i_op -> put_link ( dentry , nd , cookie ) ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mnt ) ; nd -> last_type = LAST_BIND ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9732\n\n```\nCWE-400 static int read_packet ( int fd , gss_buffer_t buf , int timeout , int first ) { int ret ; static uint32_t len = 0 ; static char len_buf [ 4 ] ; static int len_buf_pos = 0 ; static char * tmpbuf = 0 ; static int tmpbuf_pos = 0 ; if ( first ) { len_buf_pos = 0 ; return - 2 ; } if ( len_buf_pos < 4 ) { ret = timed_read ( fd , & len_buf [ len_buf_pos ] , 4 - len_buf_pos , timeout ) ; if ( ret == - 1 ) { if ( errno == EINTR || errno == EAGAIN ) return - 2 ; LOG ( LOG_ERR , ( \"%s\" , strerror ( errno ) ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } if ( ret == 0 ) { if ( len_buf_pos == 0 ) return 0 ; LOG ( LOG_INFO , ( \"EOF<S2SV_blank>reading<S2SV_blank>packet<S2SV_blank>len\" ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } len_buf_pos += ret ; } if ( len_buf_pos != 4 ) return - 2 ; len = ntohl ( * ( uint32_t * ) len_buf ) ; if ( len > GSTD_MAXPACKETCONTENTS + 512 ) { LOG ( LOG_ERR , ( \"ridiculous<S2SV_blank>length,<S2SV_blank>%ld\" , len ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } if ( ! tmpbuf ) { if ( ( tmpbuf = malloc ( len ) ) == NULL ) { LOG ( LOG_CRIT , ( \"malloc<S2SV_blank>failure,<S2SV_blank>%ld<S2SV_blank>bytes\" , len ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } } ret = timed_read ( fd , tmpbuf + tmpbuf_pos , len - tmpbuf_pos , timeout ) ; if ( ret == - 1 ) { if ( errno == EINTR || errno == EAGAIN ) return - 2 ; LOG ( LOG_ERR , ( \"%s\" , strerror ( errno ) ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } if ( ret == 0 ) { LOG ( LOG_ERR , ( \"EOF<S2SV_blank>while<S2SV_blank>reading<S2SV_blank>packet<S2SV_blank>(len=%d)\" , len ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } tmpbuf_pos += ret ; if ( tmpbuf_pos == len ) { buf -> length = len ; buf -> value = tmpbuf ; len = len_buf_pos = tmpbuf_pos = 0 ; tmpbuf = NULL ; LOG ( LOG_DEBUG , ( \"read<S2SV_blank>packet<S2SV_blank>of<S2SV_blank>length<S2SV_blank>%d\" , buf -> length ) ) ; return 1 ; } return - 2 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } len_buf_pos <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } } <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } tmpbuf_pos <S2SV_ModStart> - 2 ; bail : free ( tmpbuf ) ; tmpbuf = NULL ; return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13037\n\n```\nCWE-125 <S2SV_StartBug> static void <S2SV_EndBug> ip_printts ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register u_int ptr ; register u_int len ; int hoplen ; const char * type ; if ( length < 4 ) { ND_PRINT ( ( ndo , \"[bad<S2SV_blank>length<S2SV_blank>%u]\" , length ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } ND_PRINT ( ( ndo , \"<S2SV_blank>TS{\" ) ) ; hoplen = ( ( cp [ 3 ] & 0xF ) != IPOPT_TS_TSONLY ) ? 8 : 4 ; if ( ( length - 4 ) & ( hoplen - 1 ) ) ND_PRINT ( ( ndo , \"[bad<S2SV_blank>length<S2SV_blank>%u]\" , length ) ) ; <S2SV_StartBug> ptr = cp [ 2 ] - 1 ; <S2SV_EndBug> len = 0 ; if ( ptr < 4 || ( ( ptr - 4 ) & ( hoplen - 1 ) ) || ptr > length + 1 ) ND_PRINT ( ( ndo , \"[bad<S2SV_blank>ptr<S2SV_blank>%u]\" , cp [ 2 ] ) ) ; <S2SV_StartBug> switch ( cp [ 3 ] & 0xF ) { <S2SV_EndBug> case IPOPT_TS_TSONLY : ND_PRINT ( ( ndo , \"TSONLY\" ) ) ; break ; case IPOPT_TS_TSANDADDR : ND_PRINT ( ( ndo , \"TS+ADDR\" ) ) ; break ; case 2 : ND_PRINT ( ( ndo , \"PRESPEC2.0\" ) ) ; break ; case 3 : ND_PRINT ( ( ndo , \"PRESPEC\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"[bad<S2SV_blank>ts<S2SV_blank>type<S2SV_blank>%d]\" , cp [ 3 ] & 0xF ) ) ; goto done ; } type = \"<S2SV_blank>\" ; for ( len = 4 ; len < length ; len += hoplen ) { if ( ptr == len ) <S2SV_StartBug> type = \"<S2SV_blank>^<S2SV_blank>\" ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s%d@%s\" , type , EXTRACT_32BITS ( & cp [ len + hoplen - 4 ] ) , hoplen != 8 ? \"\" : ipaddr_string ( ndo , & cp [ len ] ) ) ) ; type = \"<S2SV_blank>\" ; } done : ND_PRINT ( ( ndo , \"%s\" , ptr == len ? \"<S2SV_blank>^<S2SV_blank>\" : \"\" ) ) ; if ( cp [ 3 ] >> 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>[%d<S2SV_blank>hops<S2SV_blank>not<S2SV_blank>recorded]}<S2SV_blank>\" , cp [ 3 ] >> 4 ) ) ; else ND_PRINT ( ( ndo , \"}\" ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> ip_printts ( netdissect_options <S2SV_ModStart> ) ; return ( 0 ) <S2SV_ModStart> ) ) ; ND_TCHECK ( cp [ 2 ] ) ; <S2SV_ModStart> ) ) ; ND_TCHECK ( cp [ 3 ] ) ; <S2SV_ModStart> type = \"<S2SV_blank>^<S2SV_blank>\" ; ND_TCHECK2 ( cp [ len ] , hoplen ) <S2SV_ModStart> ) ) ; return ( 0 ) ; trunc : return ( - 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0835\n\n```\nCWE-119 <S2SV_StartBug> void impeg2d_dec_pnb_mb_params ( dec_state_t * ps_dec ) <S2SV_EndBug> { stream_t * ps_stream = & ps_dec -> s_bit_stream ; UWORD16 u2_mb_addr_incr ; UWORD16 u2_total_len ; UWORD16 u2_len ; UWORD16 u2_mb_type ; UWORD32 u4_next_word ; const dec_mb_params_t * ps_dec_mb_params ; if ( impeg2d_bit_stream_nxt ( ps_stream , 1 ) == 1 ) { impeg2d_bit_stream_flush ( ps_stream , 1 ) ; } else { u2_mb_addr_incr = impeg2d_get_mb_addr_incr ( ps_stream ) ; if ( ps_dec -> u2_first_mb ) { ps_dec -> u2_mb_x = u2_mb_addr_incr - 1 ; ps_dec -> u2_mb_x = MIN ( ps_dec -> u2_mb_x , ( ps_dec -> u2_num_horiz_mb - 1 ) ) ; u2_mb_addr_incr = 1 ; ps_dec -> u2_first_mb = 0 ; } else { if ( ps_dec -> u2_is_mpeg2 && ( ( ps_dec -> u2_mb_x + u2_mb_addr_incr ) > ps_dec -> u2_num_horiz_mb ) ) { u2_mb_addr_incr = ps_dec -> u2_num_horiz_mb - ps_dec -> u2_mb_x ; } impeg2d_dec_skip_mbs ( ps_dec , ( UWORD16 ) ( u2_mb_addr_incr - 1 ) ) ; } } u4_next_word = ( UWORD16 ) impeg2d_bit_stream_nxt ( ps_stream , 16 ) ; { u2_mb_type = ps_dec -> pu2_mb_type [ BITS ( ( UWORD16 ) u4_next_word , 15 , 10 ) ] ; u2_len = BITS ( u2_mb_type , 15 , 8 ) ; u2_total_len = u2_len ; u4_next_word = ( UWORD16 ) LSW ( ( UWORD16 ) u4_next_word << u2_len ) ; } { WORD32 i4_motion_type = ps_dec -> u2_motion_type ; if ( ( u2_mb_type & MB_FORW_OR_BACK ) && ps_dec -> u2_read_motion_type ) { ps_dec -> u2_motion_type = BITS ( ( UWORD16 ) u4_next_word , 15 , 14 ) ; u2_total_len += MB_MOTION_TYPE_LEN ; u4_next_word = ( UWORD16 ) LSW ( ( UWORD16 ) u4_next_word << MB_MOTION_TYPE_LEN ) ; i4_motion_type = ps_dec -> u2_motion_type ; } if ( ( u2_mb_type & MB_FORW_OR_BACK ) && ( ( i4_motion_type == 0 ) || ( i4_motion_type == 3 ) || ( i4_motion_type == 4 ) || ( i4_motion_type >= 7 ) ) ) { i4_motion_type = 1 ; } } { if ( ( u2_mb_type & MB_CODED ) && ps_dec -> u2_read_dct_type ) { ps_dec -> u2_field_dct = BIT ( ( UWORD16 ) u4_next_word , 15 ) ; u2_total_len += MB_DCT_TYPE_LEN ; u4_next_word = ( UWORD16 ) LSW ( ( UWORD16 ) u4_next_word << MB_DCT_TYPE_LEN ) ; } } if ( u2_mb_type & MB_QUANT ) { UWORD16 u2_quant_scale_code ; u2_quant_scale_code = BITS ( ( UWORD16 ) u4_next_word , 15 , 11 ) ; ps_dec -> u1_quant_scale = ( ps_dec -> u2_q_scale_type ) ? gau1_impeg2_non_linear_quant_scale [ u2_quant_scale_code ] : ( u2_quant_scale_code << 1 ) ; u2_total_len += MB_QUANT_SCALE_CODE_LEN ; } impeg2d_bit_stream_flush ( ps_stream , u2_total_len ) ; ps_dec -> u2_coded_mb = ( UWORD16 ) ( u2_mb_type & MB_CODED ) ; if ( u2_mb_type & MB_BIDRECT ) { UWORD16 u2_index = ( ps_dec -> u2_motion_type ) ; ps_dec -> u2_prev_intra_mb = 0 ; ps_dec -> e_mb_pred = BIDIRECT ; ps_dec_mb_params = & ps_dec -> ps_func_bi_direct [ u2_index ] ; ps_dec -> s_mb_type = ps_dec_mb_params -> s_mb_type ; <S2SV_StartBug> ps_dec_mb_params -> pf_func_mb_params ( ps_dec ) ; <S2SV_EndBug> } else if ( u2_mb_type & MB_FORW_OR_BACK ) { UWORD16 u2_refPic = ! ( u2_mb_type & MB_MV_FORW ) ; UWORD16 u2_index = ( ps_dec -> u2_motion_type ) ; ps_dec -> u2_prev_intra_mb = 0 ; ps_dec -> e_mb_pred = ( e_pred_direction_t ) u2_refPic ; ps_dec_mb_params = & ps_dec -> ps_func_forw_or_back [ u2_index ] ; ps_dec -> s_mb_type = ps_dec_mb_params -> s_mb_type ; <S2SV_StartBug> ps_dec_mb_params -> pf_func_mb_params ( ps_dec ) ; <S2SV_EndBug> } else if ( u2_mb_type & MB_TYPE_INTRA ) { ps_dec -> u2_prev_intra_mb = 1 ; impeg2d_dec_intra_mb ( ps_dec ) ; } else { ps_dec -> u2_prev_intra_mb = 0 ; ps_dec -> e_mb_pred = FORW ; ps_dec -> u2_motion_type = 0 ; impeg2d_dec_0mv_coded_mb ( ps_dec ) ; } if ( ( u2_mb_type & MB_TYPE_INTRA ) ) { ps_dec -> u2_cbp = 0x3f ; ps_dec -> u2_prev_intra_mb = 1 ; } else { ps_dec -> u2_prev_intra_mb = 0 ; ps_dec -> u2_def_dc_pred [ Y_LUMA ] = 128 << ps_dec -> u2_intra_dc_precision ; ps_dec -> u2_def_dc_pred [ U_CHROMA ] = 128 << ps_dec -> u2_intra_dc_precision ; ps_dec -> u2_def_dc_pred [ V_CHROMA ] = 128 << ps_dec -> u2_intra_dc_precision ; if ( ( ps_dec -> u2_coded_mb ) ) { UWORD16 cbpValue ; cbpValue = gau2_impeg2d_cbp_code [ impeg2d_bit_stream_nxt ( ps_stream , MB_CBP_LEN ) ] ; ps_dec -> u2_cbp = cbpValue & 0xFF ; impeg2d_bit_stream_flush ( ps_stream , ( cbpValue >> 8 ) & 0x0FF ) ; } else { ps_dec -> u2_cbp = 0 ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> WORD32 <S2SV_ModEnd> impeg2d_dec_pnb_mb_params ( dec_state_t <S2SV_ModStart> -> s_mb_type ; if ( NULL == ps_dec_mb_params -> pf_func_mb_params ) return - 1 ; <S2SV_ModStart> -> s_mb_type ; if ( NULL == ps_dec_mb_params -> pf_func_mb_params ) return - 1 ; <S2SV_ModStart> ; } } return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000083\n\n```\nCWE-000 static gboolean comics_check_decompress_command ( gchar * mime_type , ComicsDocument * comics_document , GError * * error ) { gboolean success ; gchar * std_out , * std_err ; gint retval ; GError * err = NULL ; if ( g_content_type_is_a ( mime_type , \"application/x-cbr\" ) || g_content_type_is_a ( mime_type , \"application/x-rar\" ) ) { comics_document -> selected_command = g_find_program_in_path ( \"unrar\" ) ; if ( comics_document -> selected_command ) { success = g_spawn_command_line_sync ( comics_document -> selected_command , & std_out , & std_err , & retval , & err ) ; if ( ! success ) { g_propagate_error ( error , err ) ; g_error_free ( err ) ; return FALSE ; } else if ( WIFEXITED ( retval ) ) { if ( g_strrstr ( std_out , \"freeware\" ) != NULL ) comics_document -> command_usage = RARLABS ; else comics_document -> command_usage = GNAUNRAR ; g_free ( std_out ) ; g_free ( std_err ) ; return TRUE ; } } comics_document -> selected_command = g_find_program_in_path ( \"unrar-free\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = GNAUNRAR ; return TRUE ; } <S2SV_StartBug> comics_document -> selected_command = <S2SV_EndBug> g_find_program_in_path ( \"bsdtar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } } else if ( g_content_type_is_a ( mime_type , \"application/x-cbz\" ) || g_content_type_is_a ( mime_type , \"application/zip\" ) ) { comics_document -> selected_command = g_find_program_in_path ( \"unzip\" ) ; comics_document -> alternative_command = g_find_program_in_path ( \"zipnote\" ) ; if ( comics_document -> selected_command && comics_document -> alternative_command ) { comics_document -> command_usage = UNZIP ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"7za\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"7z\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } <S2SV_StartBug> comics_document -> selected_command = <S2SV_EndBug> g_find_program_in_path ( \"bsdtar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } } else if ( g_content_type_is_a ( mime_type , \"application/x-cb7\" ) || g_content_type_is_a ( mime_type , \"application/x-7z-compressed\" ) ) { comics_document -> selected_command = g_find_program_in_path ( \"7zr\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"7za\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"7z\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } <S2SV_StartBug> comics_document -> selected_command = <S2SV_EndBug> g_find_program_in_path ( \"bsdtar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } } else if ( g_content_type_is_a ( mime_type , \"application/x-cbt\" ) || g_content_type_is_a ( mime_type , \"application/x-tar\" ) ) { comics_document -> selected_command = g_find_program_in_path ( \"tar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"bsdtar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } } else { g_set_error ( error , EV_DOCUMENT_ERROR , EV_DOCUMENT_ERROR_INVALID , _ ( \"Not<S2SV_blank>a<S2SV_blank>comic<S2SV_blank>book<S2SV_blank>MIME<S2SV_blank>type:<S2SV_blank>%s\" ) , mime_type ) ; return FALSE ; } g_set_error_literal ( error , EV_DOCUMENT_ERROR , EV_DOCUMENT_ERROR_INVALID , _ ( \"Can’t<S2SV_blank>find<S2SV_blank>an<S2SV_blank>appropriate<S2SV_blank>command<S2SV_blank>to<S2SV_blank>\" \"decompress<S2SV_blank>this<S2SV_blank>type<S2SV_blank>of<S2SV_blank>comic<S2SV_blank>book\" ) ) ; return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TRUE ; } <S2SV_ModEnd> } else if <S2SV_ModStart> TRUE ; } <S2SV_ModEnd> } else if <S2SV_ModStart> TRUE ; } } else <S2SV_ModEnd> { g_set_error (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-326 __be32 ipv6_select_ident ( struct net * net , const struct in6_addr * daddr , const struct in6_addr * saddr ) { <S2SV_StartBug> static u32 ip6_idents_hashrnd __read_mostly ; <S2SV_EndBug> u32 id ; net_get_random_once ( & ip6_idents_hashrnd , sizeof ( ip6_idents_hashrnd ) ) ; <S2SV_StartBug> id = __ipv6_select_ident ( net , ip6_idents_hashrnd , daddr , saddr ) ; <S2SV_EndBug> return htonl ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> saddr ) { u32 id <S2SV_ModEnd> ; id = <S2SV_ModStart> __ipv6_select_ident ( net <S2SV_ModEnd> , daddr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_print_modes_and_motion_vectors ( VP9_COMMON * cm , const char * file ) { int mi_row ; int mi_col ; <S2SV_StartBug> int mi_index = 0 ; <S2SV_EndBug> FILE * mvs = fopen ( file , \"a\" ) ; <S2SV_StartBug> MODE_INFO * * mi_8x8 = cm -> mi_grid_visible ; <S2SV_EndBug> int rows = cm -> mi_rows ; int cols = cm -> mi_cols ; print_mi_data ( cm , mvs , \"Partitions:\" , offsetof ( MB_MODE_INFO , sb_type ) ) ; print_mi_data ( cm , mvs , \"Modes:\" , offsetof ( MB_MODE_INFO , mode ) ) ; <S2SV_StartBug> print_mi_data ( cm , mvs , \"Skips:\" , offsetof ( MB_MODE_INFO , skip ) ) ; <S2SV_EndBug> print_mi_data ( cm , mvs , \"Ref<S2SV_blank>frame:\" , offsetof ( MB_MODE_INFO , ref_frame [ 0 ] ) ) ; print_mi_data ( cm , mvs , \"Transform:\" , offsetof ( MB_MODE_INFO , tx_size ) ) ; print_mi_data ( cm , mvs , \"UV<S2SV_blank>Modes:\" , offsetof ( MB_MODE_INFO , uv_mode ) ) ; log_frame_info ( cm , \"Vectors<S2SV_blank>\" , mvs ) ; for ( mi_row = 0 ; mi_row < rows ; mi_row ++ ) { <S2SV_StartBug> fprintf ( mvs , \"V<S2SV_blank>\" ) ; <S2SV_EndBug> for ( mi_col = 0 ; mi_col < cols ; mi_col ++ ) { <S2SV_StartBug> fprintf ( mvs , \"%4d:%4d<S2SV_blank>\" , mi_8x8 [ mi_index ] -> mbmi . mv [ 0 ] . as_mv . row , <S2SV_EndBug> mi_8x8 [ mi_index ] -> mbmi . mv [ 0 ] . as_mv . col ) ; mi_index ++ ; } fprintf ( mvs , \"\\\\n\" ) ; <S2SV_StartBug> mi_index += 8 ; <S2SV_EndBug> } fprintf ( mvs , \"\\\\n\" ) ; <S2SV_StartBug> fclose ( mvs ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mi_col ; <S2SV_ModEnd> FILE * mvs <S2SV_ModStart> MODE_INFO * * mi <S2SV_ModEnd> = cm -> <S2SV_ModStart> , mvs , \"Ref<S2SV_blank>frame:\" , offsetof ( MB_MODE_INFO , ref_frame [ 0 ] ) ) ; print_mi_data ( cm , mvs , \"Transform:\" , offsetof ( MB_MODE_INFO , tx_size ) ) ; print_mi_data ( cm , mvs , \"UV<S2SV_blank>Modes:\" , offsetof ( MB_MODE_INFO , uv_mode ) ) ; log_frame_info ( cm , \"Skips:\" <S2SV_ModEnd> , mvs ) <S2SV_ModStart> ( mvs , \"S<S2SV_blank>\" <S2SV_ModEnd> ) ; for <S2SV_ModStart> ( mvs , \"%2d<S2SV_blank>\" , mi [ 0 <S2SV_ModEnd> ] -> mbmi <S2SV_ModStart> -> mbmi . skip ) ; mi <S2SV_ModEnd> ++ ; } <S2SV_ModStart> \"\\\\n\" ) ; mi <S2SV_ModEnd> += 8 ; <S2SV_ModStart> \"\\\\n\" ) ; log_frame_info ( cm , \"Vectors<S2SV_blank>\" , mvs ) ; mi = cm -> mi_grid_visible ; for ( mi_row = 0 ; mi_row < rows ; mi_row ++ ) { fprintf ( mvs , \"V<S2SV_blank>\" ) ; for ( mi_col = 0 ; mi_col < cols ; mi_col ++ ) { fprintf ( mvs , \"%4d:%4d<S2SV_blank>\" , mi [ 0 ] -> mbmi . mv [ 0 ] . as_mv . row , mi [ 0 ] -> mbmi . mv [ 0 ] . as_mv . col ) ; mi ++ ; } fprintf ( mvs , \"\\\\n\" ) ; mi += 8 ; } fprintf ( mvs , \"\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2616\n\n```\nCWE-362 static void create_watching_parent ( void ) { pid_t child ; sigset_t ourset ; struct sigaction oldact [ 3 ] ; int status = 0 ; int retval ; retval = pam_open_session ( pamh , 0 ) ; if ( is_pam_failure ( retval ) ) { cleanup_pam ( retval ) ; errx ( EXIT_FAILURE , _ ( \"cannot<S2SV_blank>open<S2SV_blank>session:<S2SV_blank>%s\" ) , pam_strerror ( pamh , retval ) ) ; } else _pam_session_opened = 1 ; memset ( oldact , 0 , sizeof ( oldact ) ) ; child = fork ( ) ; if ( child == ( pid_t ) - 1 ) { cleanup_pam ( PAM_ABORT ) ; err ( EXIT_FAILURE , _ ( \"cannot<S2SV_blank>create<S2SV_blank>child<S2SV_blank>process\" ) ) ; } if ( child == 0 ) return ; if ( chdir ( \"/\" ) != 0 ) warn ( _ ( \"cannot<S2SV_blank>change<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>%s\" ) , \"/\" ) ; sigfillset ( & ourset ) ; if ( sigprocmask ( SIG_BLOCK , & ourset , NULL ) ) { warn ( _ ( \"cannot<S2SV_blank>block<S2SV_blank>signals\" ) ) ; caught_signal = true ; } if ( ! caught_signal ) { struct sigaction action ; action . sa_handler = su_catch_sig ; sigemptyset ( & action . sa_mask ) ; action . sa_flags = 0 ; sigemptyset ( & ourset ) ; if ( ! same_session ) { if ( sigaddset ( & ourset , SIGINT ) || sigaddset ( & ourset , SIGQUIT ) ) { warn ( _ ( \"cannot<S2SV_blank>set<S2SV_blank>signal<S2SV_blank>handler\" ) ) ; caught_signal = true ; } } if ( ! caught_signal && ( sigaddset ( & ourset , SIGTERM ) || sigaddset ( & ourset , SIGALRM ) || sigaction ( SIGTERM , & action , & oldact [ 0 ] ) || sigprocmask ( SIG_UNBLOCK , & ourset , NULL ) ) ) { warn ( _ ( \"cannot<S2SV_blank>set<S2SV_blank>signal<S2SV_blank>handler\" ) ) ; caught_signal = true ; } if ( ! caught_signal && ! same_session && ( sigaction ( SIGINT , & action , & oldact [ 1 ] ) || sigaction ( SIGQUIT , & action , & oldact [ 2 ] ) ) ) { warn ( _ ( \"cannot<S2SV_blank>set<S2SV_blank>signal<S2SV_blank>handler\" ) ) ; caught_signal = true ; } } if ( ! caught_signal ) { pid_t pid ; for ( ; ; ) { pid = waitpid ( child , & status , WUNTRACED ) ; if ( pid != ( pid_t ) - 1 && WIFSTOPPED ( status ) ) { kill ( getpid ( ) , SIGSTOP ) ; kill ( pid , SIGCONT ) ; } else break ; } if ( pid != ( pid_t ) - 1 ) { if ( WIFSIGNALED ( status ) ) { fprintf ( stderr , \"%s%s\\\\n\" , strsignal ( WTERMSIG ( status ) ) , WCOREDUMP ( status ) ? _ ( \"<S2SV_blank>(core<S2SV_blank>dumped)\" ) : \"\" ) ; status = WTERMSIG ( status ) + 128 ; } else status = WEXITSTATUS ( status ) ; <S2SV_StartBug> } <S2SV_EndBug> else if ( caught_signal ) status = caught_signal + 128 ; else status = 1 ; } else status = 1 ; <S2SV_StartBug> if ( caught_signal ) <S2SV_EndBug> { fprintf ( stderr , _ ( \"\\\\nSession<S2SV_blank>terminated,<S2SV_blank>killing<S2SV_blank>shell...\" ) ) ; kill ( child , SIGTERM ) ; } cleanup_pam ( PAM_SUCCESS ) ; if ( caught_signal ) { <S2SV_StartBug> sleep ( 2 ) ; <S2SV_EndBug> kill ( child , SIGKILL ) ; <S2SV_StartBug> fprintf ( stderr , _ ( \"<S2SV_blank>...killed.\\\\n\" ) ) ; <S2SV_EndBug> switch ( caught_signal ) { case SIGTERM : sigaction ( SIGTERM , & oldact [ 0 ] , NULL ) ; break ; case SIGINT : sigaction ( SIGINT , & oldact [ 1 ] , NULL ) ; break ; case SIGQUIT : sigaction ( SIGQUIT , & oldact [ 2 ] , NULL ) ; break ; default : caught_signal = SIGKILL ; break ; } kill ( getpid ( ) , caught_signal ) ; } exit ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> status ) ; child = ( pid_t ) - 1 ; <S2SV_ModStart> if ( caught_signal && child != ( pid_t ) - 1 <S2SV_ModStart> caught_signal ) { if ( child != ( pid_t ) - 1 ) { <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15537\n\n```\nCWE-200 int xstateregs_set ( struct task_struct * target , const struct user_regset * regset , unsigned int pos , unsigned int count , const void * kbuf , const void __user * ubuf ) { struct fpu * fpu = & target -> thread . fpu ; struct xregs_state * xsave ; int ret ; if ( ! boot_cpu_has ( X86_FEATURE_XSAVE ) ) return - ENODEV ; if ( ( pos != 0 ) || ( count < fpu_user_xstate_size ) ) return - EFAULT ; xsave = & fpu -> state . xsave ; fpu__activate_fpstate_write ( fpu ) ; if ( boot_cpu_has ( X86_FEATURE_XSAVES ) ) { if ( kbuf ) ret = copy_kernel_to_xstate ( xsave , kbuf ) ; else ret = copy_user_to_xstate ( xsave , ubuf ) ; } else { ret = user_regset_copyin ( & pos , & count , & kbuf , & ubuf , xsave , 0 , - 1 ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( ret ) fpstate_init ( & fpu -> state ) ; xsave -> i387 . mxcsr &= mxcsr_feature_mask ; xsave -> header . xfeatures &= xfeatures_mask ; memset ( & xsave -> header . reserved , 0 , 48 ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( ! ret && xsave -> header . xcomp_bv ) ret = - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11668\n\n```\nCWE-476 static int cit_get_packet_size ( struct gspca_dev * gspca_dev ) { struct usb_host_interface * alt ; struct usb_interface * intf ; intf = usb_ifnum_to_if ( gspca_dev -> dev , gspca_dev -> iface ) ; alt = usb_altnum_to_altsetting ( intf , gspca_dev -> alt ) ; if ( ! alt ) { pr_err ( \"Couldn\\'t<S2SV_blank>get<S2SV_blank>altsetting\\\\n\" ) ; return - EIO ; } <S2SV_StartBug> return le16_to_cpu ( alt -> endpoint [ 0 ] . desc . wMaxPacketSize ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EIO ; } if ( alt -> desc . bNumEndpoints < 1 ) return - ENODEV ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4943\n\n```\nCWE-264 static int pppol2tp_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; struct l2tp_session * session ; struct l2tp_tunnel * tunnel ; struct pppol2tp_session * ps ; int val ; int err ; if ( level != SOL_PPPOL2TP ) <S2SV_StartBug> return udp_prot . setsockopt ( sk , level , optname , optval , optlen ) ; <S2SV_EndBug> if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; err = - ENOTCONN ; if ( sk -> sk_user_data == NULL ) goto end ; err = - EBADF ; session = pppol2tp_sock_to_session ( sk ) ; if ( session == NULL ) goto end ; ps = l2tp_session_priv ( session ) ; if ( ( session -> session_id == 0 ) && ( session -> peer_session_id == 0 ) ) { err = - EBADF ; tunnel = l2tp_sock_to_tunnel ( ps -> tunnel_sock ) ; if ( tunnel == NULL ) goto end_put_sess ; err = pppol2tp_tunnel_setsockopt ( sk , tunnel , optname , val ) ; sock_put ( ps -> tunnel_sock ) ; } else err = pppol2tp_session_setsockopt ( sk , session , optname , val ) ; err = 0 ; end_put_sess : sock_put ( sk ) ; end : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SOL_PPPOL2TP ) return - EINVAL <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void write_frame_size_with_refs ( VP9_COMP * cpi , <S2SV_StartBug> struct vp9_write_bit_buffer * wb ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; int found = 0 ; MV_REFERENCE_FRAME ref_frame ; for ( ref_frame = LAST_FRAME ; ref_frame <= ALTREF_FRAME ; ++ ref_frame ) { YV12_BUFFER_CONFIG * cfg = get_ref_frame_buffer ( cpi , ref_frame ) ; <S2SV_StartBug> found = cm -> width == cfg -> y_crop_width && <S2SV_EndBug> cm -> height == cfg -> y_crop_height ; <S2SV_StartBug> if ( cpi -> use_svc ) { <S2SV_EndBug> found = 0 ; } vp9_wb_write_bit ( wb , found ) ; if ( found ) { break ; } } if ( ! found ) { <S2SV_StartBug> vp9_wb_write_literal ( wb , cm -> width - 1 , 16 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_literal ( wb , cm -> height - 1 , 16 ) ; <S2SV_EndBug> } write_display_size ( cm , wb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi , struct vpx_write_bit_buffer <S2SV_ModEnd> * wb ) <S2SV_ModStart> ref_frame ) ; if ( cpi -> use_svc && ( ( cpi -> svc . number_temporal_layers > 1 && cpi -> oxcf . rc_mode == VPX_CBR ) || ( cpi -> svc . number_spatial_layers > 1 && cpi -> svc . layer_context [ cpi -> svc . spatial_layer_id ] . is_key_frame ) || ( is_two_pass_svc ( cpi ) && cpi -> svc . encode_empty_frame_state == ENCODING && cpi -> svc . layer_context [ 0 ] . frames_from_key_frame < cpi -> svc . number_temporal_layers + 1 ) ) ) { found = 0 ; } else if ( cfg != NULL ) { <S2SV_ModStart> -> y_crop_height ; } vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> found ) { vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> 16 ) ; vpx_wb_write_literal <S2SV_ModEnd> ( wb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6430\n\n```\nCWE-125 size_t compile_tree ( struct filter_op * * fop ) { int i = 1 ; struct filter_op * array = NULL ; struct unfold_elm * ue ; <S2SV_StartBug> BUG_IF ( tree_root == NULL ) ; <S2SV_EndBug> fprintf ( stdout , \"<S2SV_blank>Unfolding<S2SV_blank>the<S2SV_blank>meta-tree<S2SV_blank>\" ) ; fflush ( stdout ) ; unfold_blk ( & tree_root ) ; fprintf ( stdout , \"<S2SV_blank>done.\\\\n\\\\n\" ) ; labels_to_offsets ( ) ; TAILQ_FOREACH ( ue , & unfolded_tree , next ) { if ( ue -> label == 0 ) { SAFE_REALLOC ( array , i * sizeof ( struct filter_op ) ) ; memcpy ( & array [ i - 1 ] , & ue -> fop , sizeof ( struct filter_op ) ) ; i ++ ; } } SAFE_REALLOC ( array , i * sizeof ( struct filter_op ) ) ; array [ i - 1 ] . opcode = FOP_EXIT ; * fop = array ; return ( i ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ue ; if <S2SV_ModEnd> ( tree_root == <S2SV_ModStart> == NULL ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8543\n\n```\nCWE-000 static int inet_create ( struct net * net , struct socket * sock , int protocol , int kern ) { struct sock * sk ; struct inet_protosw * answer ; struct inet_sock * inet ; struct proto * answer_prot ; unsigned char answer_flags ; int try_loading_module = 0 ; <S2SV_StartBug> int err ; <S2SV_EndBug> sock -> state = SS_UNCONNECTED ; lookup_protocol : err = - ESOCKTNOSUPPORT ; rcu_read_lock ( ) ; list_for_each_entry_rcu ( answer , & inetsw [ sock -> type ] , list ) { err = 0 ; if ( protocol == answer -> protocol ) { if ( protocol != IPPROTO_IP ) break ; } else { if ( IPPROTO_IP == protocol ) { protocol = answer -> protocol ; break ; } if ( IPPROTO_IP == answer -> protocol ) break ; } err = - EPROTONOSUPPORT ; } if ( unlikely ( err ) ) { if ( try_loading_module < 2 ) { rcu_read_unlock ( ) ; if ( ++ try_loading_module == 1 ) request_module ( \"net-pf-%d-proto-%d-type-%d\" , PF_INET , protocol , sock -> type ) ; else request_module ( \"net-pf-%d-proto-%d\" , PF_INET , protocol ) ; goto lookup_protocol ; } else goto out_rcu_unlock ; } err = - EPERM ; if ( sock -> type == SOCK_RAW && ! kern && ! ns_capable ( net -> user_ns , CAP_NET_RAW ) ) goto out_rcu_unlock ; sock -> ops = answer -> ops ; answer_prot = answer -> prot ; answer_flags = answer -> flags ; rcu_read_unlock ( ) ; WARN_ON ( ! answer_prot -> slab ) ; err = - ENOBUFS ; sk = sk_alloc ( net , PF_INET , GFP_KERNEL , answer_prot , kern ) ; if ( ! sk ) goto out ; err = 0 ; if ( INET_PROTOSW_REUSE & answer_flags ) sk -> sk_reuse = SK_CAN_REUSE ; inet = inet_sk ( sk ) ; inet -> is_icsk = ( INET_PROTOSW_ICSK & answer_flags ) != 0 ; inet -> nodefrag = 0 ; if ( SOCK_RAW == sock -> type ) { inet -> inet_num = protocol ; if ( IPPROTO_RAW == protocol ) inet -> hdrincl = 1 ; } if ( net -> ipv4 . sysctl_ip_no_pmtu_disc ) inet -> pmtudisc = IP_PMTUDISC_DONT ; else inet -> pmtudisc = IP_PMTUDISC_WANT ; inet -> inet_id = 0 ; sock_init_data ( sock , sk ) ; sk -> sk_destruct = inet_sock_destruct ; sk -> sk_protocol = protocol ; sk -> sk_backlog_rcv = sk -> sk_prot -> backlog_rcv ; inet -> uc_ttl = - 1 ; inet -> mc_loop = 1 ; inet -> mc_ttl = 1 ; inet -> mc_all = 1 ; inet -> mc_index = 0 ; inet -> mc_list = NULL ; inet -> rcv_tos = 0 ; sk_refcnt_debug_inc ( sk ) ; if ( inet -> inet_num ) { inet -> inet_sport = htons ( inet -> inet_num ) ; sk -> sk_prot -> hash ( sk ) ; } if ( sk -> sk_prot -> init ) { err = sk -> sk_prot -> init ( sk ) ; if ( err ) sk_common_release ( sk ) ; } out : return err ; out_rcu_unlock : rcu_read_unlock ( ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int err ; if ( protocol < 0 || protocol >= IPPROTO_MAX ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20786\n\n```\nCWE-476 static VTermState * vterm_state_new ( VTerm * vt ) { <S2SV_StartBug> VTermState * state = vterm_allocator_malloc ( vt , sizeof ( VTermState ) ) ; <S2SV_EndBug> state -> vt = vt ; state -> rows = vt -> rows ; state -> cols = vt -> cols ; state -> mouse_col = 0 ; state -> mouse_row = 0 ; state -> mouse_buttons = 0 ; state -> mouse_protocol = MOUSE_X10 ; state -> callbacks = NULL ; state -> cbdata = NULL ; vterm_state_newpen ( state ) ; state -> bold_is_highbright = 0 ; return state ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VTermState ) ) ; if ( state == NULL ) return NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static int _nfs4_do_open ( struct inode * dir , struct path * path , int flags , struct iattr * sattr , struct rpc_cred * cred , struct nfs4_state * * res ) <S2SV_EndBug> { struct nfs4_state_owner * sp ; struct nfs4_state * state = NULL ; struct nfs_server * server = NFS_SERVER ( dir ) ; struct nfs4_opendata * opendata ; int status ; status = - ENOMEM ; if ( ! ( sp = nfs4_get_state_owner ( server , cred ) ) ) { dprintk ( \"nfs4_do_open:<S2SV_blank>nfs4_get_state_owner<S2SV_blank>failed!\\\\n\" ) ; goto out_err ; } status = nfs4_recover_expired_lease ( server ) ; if ( status != 0 ) goto err_put_state_owner ; if ( path -> dentry -> d_inode != NULL ) <S2SV_StartBug> nfs4_return_incompatible_delegation ( path -> dentry -> d_inode , flags & ( FMODE_READ | FMODE_WRITE ) ) ; <S2SV_EndBug> status = - ENOMEM ; <S2SV_StartBug> opendata = nfs4_opendata_alloc ( path , sp , flags , sattr ) ; <S2SV_EndBug> if ( opendata == NULL ) goto err_put_state_owner ; if ( path -> dentry -> d_inode != NULL ) opendata -> state = nfs4_get_open_state ( path -> dentry -> d_inode , sp ) ; status = _nfs4_proc_open ( opendata ) ; if ( status != 0 ) goto err_opendata_put ; if ( opendata -> o_arg . open_flags & O_EXCL ) nfs4_exclusive_attrset ( opendata , sattr ) ; state = nfs4_opendata_to_nfs4_state ( opendata ) ; status = PTR_ERR ( state ) ; if ( IS_ERR ( state ) ) goto err_opendata_put ; nfs4_opendata_put ( opendata ) ; nfs4_put_state_owner ( sp ) ; * res = state ; return 0 ; err_opendata_put : nfs4_opendata_put ( opendata ) ; err_put_state_owner : nfs4_put_state_owner ( sp ) ; out_err : * res = NULL ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * path , fmode_t fmode , <S2SV_ModStart> -> d_inode , fmode <S2SV_ModEnd> ) ; status <S2SV_ModStart> path , sp , fmode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum bqarr_in ( PG_FUNCTION_ARGS ) { char * buf = ( char * ) PG_GETARG_POINTER ( 0 ) ; WORKSTATE state ; int32 i ; QUERYTYPE * query ; int32 commonlen ; ITEM * ptr ; NODE * tmp ; int32 pos = 0 ; # ifdef BS_DEBUG StringInfoData pbuf ; # endif state . buf = buf ; state . state = WAITOPERAND ; state . count = 0 ; state . num = 0 ; state . str = NULL ; makepol ( & state ) ; if ( ! state . num ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_PARAMETER_VALUE ) , errmsg ( \"empty<S2SV_blank>query\" ) ) ) ; <S2SV_StartBug> commonlen = COMPUTESIZE ( state . num ) ; <S2SV_EndBug> query = ( QUERYTYPE * ) palloc ( commonlen ) ; SET_VARSIZE ( query , commonlen ) ; query -> size = state . num ; ptr = GETQUERY ( query ) ; for ( i = state . num - 1 ; i >= 0 ; i -- ) { ptr [ i ] . type = state . str -> type ; ptr [ i ] . val = state . str -> val ; tmp = state . str -> next ; pfree ( state . str ) ; state . str = tmp ; } pos = query -> size - 1 ; findoprnd ( ptr , & pos ) ; # ifdef BS_DEBUG initStringInfo ( & pbuf ) ; for ( i = 0 ; i < query -> size ; i ++ ) { if ( ptr [ i ] . type == OPR ) appendStringInfo ( & pbuf , \"%c(%d)<S2SV_blank>\" , ptr [ i ] . val , ptr [ i ] . left ) ; else appendStringInfo ( & pbuf , \"%d<S2SV_blank>\" , ptr [ i ] . val ) ; } elog ( DEBUG3 , \"POR:<S2SV_blank>%s\" , pbuf . data ) ; pfree ( pbuf . data ) ; # endif PG_RETURN_POINTER ( query ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( state . num > QUERYTYPEMAXITEMS ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>query<S2SV_blank>items<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , state . num , ( int ) QUERYTYPEMAXITEMS ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11592\n\n```\nCWE-125 JsVar * jswrap_graphics_createArrayBuffer ( int width , int height , int bpp , JsVar * options ) { if ( width <= 0 || height <= 0 || width > 32767 || height > 32767 ) { jsExceptionHere ( JSET_ERROR , \"Invalid<S2SV_blank>Size\" ) ; return 0 ; } if ( ! isValidBPP ( bpp ) ) { jsExceptionHere ( JSET_ERROR , \"Invalid<S2SV_blank>BPP\" ) ; return 0 ; } JsVar * parent = jspNewObject ( 0 , \"Graphics\" ) ; if ( ! parent ) return 0 ; JsGraphics gfx ; graphicsStructInit ( & gfx ) ; gfx . data . type = JSGRAPHICSTYPE_ARRAYBUFFER ; gfx . data . flags = JSGRAPHICSFLAGS_NONE ; gfx . graphicsVar = parent ; gfx . data . width = ( unsigned short ) width ; gfx . data . height = ( unsigned short ) height ; gfx . data . bpp = ( unsigned char ) bpp ; if ( jsvIsObject ( options ) ) { if ( jsvGetBoolAndUnLock ( jsvObjectGetChild ( options , \"zigzag\" , 0 ) ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_ARRAYBUFFER_ZIGZAG ) ; if ( jsvGetBoolAndUnLock ( jsvObjectGetChild ( options , \"msb\" , 0 ) ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_ARRAYBUFFER_MSB ) ; if ( jsvGetBoolAndUnLock ( jsvObjectGetChild ( options , \"vertical_byte\" , 0 ) ) ) { if ( gfx . data . bpp == 1 ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_ARRAYBUFFER_VERTICAL_BYTE ) ; else <S2SV_StartBug> jsWarn ( \"vertical_byte<S2SV_blank>only<S2SV_blank>works<S2SV_blank>for<S2SV_blank>1bpp<S2SV_blank>ArrayBuffers\\\\n\" ) ; <S2SV_EndBug> } JsVar * colorv = jsvObjectGetChild ( options , \"color_order\" , 0 ) ; if ( colorv ) { if ( jsvIsStringEqual ( colorv , \"rgb\" ) ) ; else if ( ! jsvIsStringEqual ( colorv , \"brg\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_BRG ) ; else if ( ! jsvIsStringEqual ( colorv , \"bgr\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_BGR ) ; else if ( ! jsvIsStringEqual ( colorv , \"gbr\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_GBR ) ; else if ( ! jsvIsStringEqual ( colorv , \"grb\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_GRB ) ; else if ( ! jsvIsStringEqual ( colorv , \"rbg\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_RBG ) ; else jsWarn ( \"color_order<S2SV_blank>must<S2SV_blank>be<S2SV_blank>3<S2SV_blank>characters\" ) ; jsvUnLock ( colorv ) ; } } lcdInit_ArrayBuffer ( & gfx ) ; graphicsSetVar ( & gfx ) ; return parent ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; else { jsExceptionHere ( JSET_ERROR , <S2SV_ModEnd> \"vertical_byte<S2SV_blank>only<S2SV_blank>works<S2SV_blank>for<S2SV_blank>1bpp<S2SV_blank>ArrayBuffers\\\\n\" ) ; <S2SV_ModStart> \"vertical_byte<S2SV_blank>only<S2SV_blank>works<S2SV_blank>for<S2SV_blank>1bpp<S2SV_blank>ArrayBuffers\\\\n\" ) ; return 0 ; } if ( gfx . data . height & 7 ) { jsExceptionHere ( JSET_ERROR , \"height<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>8<S2SV_blank>when<S2SV_blank>using<S2SV_blank>vertical_byte\\\\n\" ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2038\n\n```\nCWE-200 static int nfs_can_extend_write ( struct file * file , struct page * page , struct inode * inode ) { if ( file -> f_flags & O_DSYNC ) return 0 ; <S2SV_StartBug> if ( NFS_PROTO ( inode ) -> have_delegation ( inode , FMODE_WRITE ) ) <S2SV_EndBug> return 1 ; <S2SV_StartBug> if ( nfs_write_pageuptodate ( page , inode ) && ( inode -> i_flock == NULL || <S2SV_EndBug> ( inode -> i_flock -> fl_start == 0 && inode -> i_flock -> fl_end == OFFSET_MAX && <S2SV_StartBug> inode -> i_flock -> fl_type != F_RDLCK ) ) ) <S2SV_EndBug> return 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! nfs_write_pageuptodate ( page , inode ) ) return 0 ; if ( <S2SV_ModStart> ; if ( <S2SV_ModEnd> inode -> i_flock <S2SV_ModStart> F_RDLCK ) ) <S2SV_ModEnd> return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12999\n\n```\nCWE-125 static int isis_print ( netdissect_options * ndo , const uint8_t * p , u_int length ) { const struct isis_common_header * isis_header ; const struct isis_iih_lan_header * header_iih_lan ; const struct isis_iih_ptp_header * header_iih_ptp ; const struct isis_lsp_header * header_lsp ; const struct isis_csnp_header * header_csnp ; const struct isis_psnp_header * header_psnp ; const struct isis_tlv_lsp * tlv_lsp ; const struct isis_tlv_ptp_adj * tlv_ptp_adj ; const struct isis_tlv_is_reach * tlv_is_reach ; const struct isis_tlv_es_reach * tlv_es_reach ; uint8_t pdu_type , max_area , id_length , tlv_type , tlv_len , tmp , alen , lan_alen , prefix_len ; uint8_t ext_is_len , ext_ip_len , mt_len ; const uint8_t * optr , * pptr , * tptr ; u_short packet_len , pdu_len , key_id ; u_int i , vendor_id ; int sigcheck ; packet_len = length ; optr = p ; isis_header = ( const struct isis_common_header * ) p ; ND_TCHECK ( * isis_header ) ; if ( length < ISIS_COMMON_HEADER_SIZE ) goto trunc ; pptr = p + ( ISIS_COMMON_HEADER_SIZE ) ; header_iih_lan = ( const struct isis_iih_lan_header * ) pptr ; header_iih_ptp = ( const struct isis_iih_ptp_header * ) pptr ; header_lsp = ( const struct isis_lsp_header * ) pptr ; header_csnp = ( const struct isis_csnp_header * ) pptr ; header_psnp = ( const struct isis_psnp_header * ) pptr ; if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"IS-IS\" ) ) ; if ( isis_header -> version != ISIS_VERSION ) { ND_PRINT ( ( ndo , \"version<S2SV_blank>%d<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , isis_header -> version ) ) ; return ( 0 ) ; } if ( ( isis_header -> id_length != SYSTEM_ID_LEN ) && ( isis_header -> id_length != 0 ) ) { ND_PRINT ( ( ndo , \"system<S2SV_blank>ID<S2SV_blank>length<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\" , isis_header -> id_length ) ) ; return ( 0 ) ; } if ( isis_header -> pdu_version != ISIS_VERSION ) { ND_PRINT ( ( ndo , \"version<S2SV_blank>%d<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , isis_header -> pdu_version ) ) ; return ( 0 ) ; } if ( length < isis_header -> fixed_len ) { ND_PRINT ( ( ndo , \"fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>><S2SV_blank>packet<S2SV_blank>length<S2SV_blank>%u\" , isis_header -> fixed_len , length ) ) ; return ( 0 ) ; } if ( isis_header -> fixed_len < ISIS_COMMON_HEADER_SIZE ) { ND_PRINT ( ( ndo , \"fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>minimum<S2SV_blank>header<S2SV_blank>size<S2SV_blank>%u\" , isis_header -> fixed_len , ( u_int ) ISIS_COMMON_HEADER_SIZE ) ) ; return ( 0 ) ; } max_area = isis_header -> max_area ; switch ( max_area ) { case 0 : max_area = 3 ; break ; case 255 : ND_PRINT ( ( ndo , \"bad<S2SV_blank>packet<S2SV_blank>--<S2SV_blank>255<S2SV_blank>areas\" ) ) ; return ( 0 ) ; default : break ; } id_length = isis_header -> id_length ; switch ( id_length ) { case 0 : id_length = 6 ; break ; case 1 : case 2 : case 3 : case 4 : case 5 : case 6 : case 7 : case 8 : break ; case 255 : id_length = 0 ; break ; default : break ; } if ( id_length != 6 ) { ND_PRINT ( ( ndo , \"bad<S2SV_blank>packet<S2SV_blank>--<S2SV_blank>illegal<S2SV_blank>sys-ID<S2SV_blank>length<S2SV_blank>(%u)\" , id_length ) ) ; return ( 0 ) ; } pdu_type = isis_header -> pdu_type ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \"%s%s\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , tok2str ( isis_pdu_values , \"unknown<S2SV_blank>PDU-Type<S2SV_blank>%u\" , pdu_type ) ) ) ; } else { ND_PRINT ( ( ndo , \"%slength<S2SV_blank>%u\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , length ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t%s,<S2SV_blank>hlen:<S2SV_blank>%u,<S2SV_blank>v:<S2SV_blank>%u,<S2SV_blank>pdu-v:<S2SV_blank>%u,<S2SV_blank>sys-id-len:<S2SV_blank>%u<S2SV_blank>(%u),<S2SV_blank>max-area:<S2SV_blank>%u<S2SV_blank>(%u)\" , tok2str ( isis_pdu_values , \"unknown,<S2SV_blank>type<S2SV_blank>%u\" , pdu_type ) , isis_header -> fixed_len , isis_header -> version , isis_header -> pdu_version , id_length , isis_header -> id_length , max_area , isis_header -> max_area ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , optr , \"\\\\n\\\\t\" , 8 ) ) return ( 0 ) ; } } switch ( pdu_type ) { case ISIS_PDU_L1_LAN_IIH : case ISIS_PDU_L2_LAN_IIH : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_iih_lan ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>src-id<S2SV_blank>%s\" , isis_print_id ( header_iih_lan -> source_id , SYSTEM_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>lan-id<S2SV_blank>%s,<S2SV_blank>prio<S2SV_blank>%u\" , isis_print_id ( header_iih_lan -> lan_id , NODE_ID_LEN ) , header_iih_lan -> priority ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_iih_lan -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>source-id:<S2SV_blank>%s,<S2SV_blank><S2SV_blank>holding<S2SV_blank>time:<S2SV_blank>%us,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , isis_print_id ( header_iih_lan -> source_id , SYSTEM_ID_LEN ) , EXTRACT_16BITS ( header_iih_lan -> holding_time ) , tok2str ( isis_iih_circuit_type_values , \"unknown<S2SV_blank>circuit<S2SV_blank>type<S2SV_blank>0x%02x\" , header_iih_lan -> circuit_type ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>lan-id:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s,<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , isis_print_id ( header_iih_lan -> lan_id , NODE_ID_LEN ) , ( header_iih_lan -> priority ) & ISIS_LAN_PRIORITY_MASK , pdu_len ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_IIH_LAN_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) ; break ; case ISIS_PDU_PTP_IIH : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_iih_ptp ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>src-id<S2SV_blank>%s\" , isis_print_id ( header_iih_ptp -> source_id , SYSTEM_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_iih_ptp -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>source-id:<S2SV_blank>%s,<S2SV_blank>holding<S2SV_blank>time:<S2SV_blank>%us,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , isis_print_id ( header_iih_ptp -> source_id , SYSTEM_ID_LEN ) , EXTRACT_16BITS ( header_iih_ptp -> holding_time ) , tok2str ( isis_iih_circuit_type_values , \"unknown<S2SV_blank>circuit<S2SV_blank>type<S2SV_blank>0x%02x\" , header_iih_ptp -> circuit_type ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>circuit-id:<S2SV_blank>0x%02x,<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , header_iih_ptp -> circuit_id , pdu_len ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_IIH_PTP_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) ; break ; case ISIS_PDU_L1_LSP : case ISIS_PDU_L2_LSP : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_LSP_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ISIS_LSP_HEADER_SIZE ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_lsp ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_LSP_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>lsp-id<S2SV_blank>%s,<S2SV_blank>seq<S2SV_blank>0x%08x,<S2SV_blank>lifetime<S2SV_blank>%5us\" , isis_print_id ( header_lsp -> lsp_id , LSP_ID_LEN ) , EXTRACT_32BITS ( header_lsp -> sequence_number ) , EXTRACT_16BITS ( header_lsp -> remaining_lifetime ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_lsp -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>lsp-id:<S2SV_blank>%s,<S2SV_blank>seq:<S2SV_blank>0x%08x,<S2SV_blank>lifetime:<S2SV_blank>%5us\\\\n\\\\t<S2SV_blank><S2SV_blank>chksum:<S2SV_blank>0x%04x\" , isis_print_id ( header_lsp -> lsp_id , LSP_ID_LEN ) , EXTRACT_32BITS ( header_lsp -> sequence_number ) , EXTRACT_16BITS ( header_lsp -> remaining_lifetime ) , EXTRACT_16BITS ( header_lsp -> checksum ) ) ) ; osi_print_cksum ( ndo , ( const uint8_t * ) header_lsp -> lsp_id , EXTRACT_16BITS ( header_lsp -> checksum ) , 12 , length - 12 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u,<S2SV_blank>Flags:<S2SV_blank>[<S2SV_blank>%s\" , pdu_len , ISIS_MASK_LSP_OL_BIT ( header_lsp -> typeblock ) ? \"Overload<S2SV_blank>bit<S2SV_blank>set,<S2SV_blank>\" : \"\" ) ) ; if ( ISIS_MASK_LSP_ATT_BITS ( header_lsp -> typeblock ) ) { ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_ATT_DEFAULT_BIT ( header_lsp -> typeblock ) ? \"default<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_ATT_DELAY_BIT ( header_lsp -> typeblock ) ? \"delay<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_ATT_EXPENSE_BIT ( header_lsp -> typeblock ) ? \"expense<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_ATT_ERROR_BIT ( header_lsp -> typeblock ) ? \"error<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"ATT<S2SV_blank>bit<S2SV_blank>set,<S2SV_blank>\" ) ) ; } ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_PARTITION_BIT ( header_lsp -> typeblock ) ? \"P<S2SV_blank>bit<S2SV_blank>set,<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>]\" , tok2str ( isis_lsp_istype_values , \"Unknown(0x%x)\" , ISIS_MASK_LSP_ISTYPE_BITS ( header_lsp -> typeblock ) ) ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_LSP_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_LSP_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_LSP_HEADER_SIZE ) ; break ; case ISIS_PDU_L1_CSNP : case ISIS_PDU_L2_CSNP : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ( ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_csnp ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>src-id<S2SV_blank>%s\" , isis_print_id ( header_csnp -> source_id , NODE_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_csnp -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>source-id:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s,<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , isis_print_id ( header_csnp -> source_id , NODE_ID_LEN ) , pdu_len ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>start<S2SV_blank>lsp-id:<S2SV_blank>%s\" , isis_print_id ( header_csnp -> start_lsp_id , LSP_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>end<S2SV_blank>lsp-id:<S2SV_blank><S2SV_blank><S2SV_blank>%s\" , isis_print_id ( header_csnp -> end_lsp_id , LSP_ID_LEN ) ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_CSNP_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) ; break ; case ISIS_PDU_L1_PSNP : case ISIS_PDU_L2_PSNP : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \"-<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ( ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_psnp ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>src-id<S2SV_blank>%s\" , isis_print_id ( header_psnp -> source_id , NODE_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_psnp -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>source-id:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s,<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , isis_print_id ( header_psnp -> source_id , NODE_ID_LEN ) , pdu_len ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_PSNP_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) ; break ; default : if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } ( void ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , length ) ; return ( 0 ) ; } while ( packet_len > 0 ) { ND_TCHECK2 ( * pptr , 2 ) ; if ( packet_len < 2 ) goto trunc ; tlv_type = * pptr ++ ; tlv_len = * pptr ++ ; tmp = tlv_len ; tptr = pptr ; packet_len -= 2 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>#%u,<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( isis_tlv_values , \"unknown\" , tlv_type ) , tlv_type , tlv_len ) ) ; if ( tlv_len == 0 ) continue ; if ( packet_len < tlv_len ) goto trunc ; switch ( tlv_type ) { case ISIS_TLV_AREA_ADDR : ND_TCHECK2 ( * tptr , 1 ) ; alen = * tptr ++ ; <S2SV_StartBug> while ( tmp && alen < tmp ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Area<S2SV_blank>address<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , alen , isonsap_string ( ndo , tptr , alen ) ) ) ; tptr += alen ; tmp -= alen + 1 ; if ( tmp == 0 ) break ; ND_TCHECK2 ( * tptr , 1 ) ; alen = * tptr ++ ; } break ; case ISIS_TLV_ISNEIGH : while ( tmp >= ETHER_ADDR_LEN ) { ND_TCHECK2 ( * tptr , ETHER_ADDR_LEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SNPA:<S2SV_blank>%s\" , isis_print_id ( tptr , ETHER_ADDR_LEN ) ) ) ; tmp -= ETHER_ADDR_LEN ; tptr += ETHER_ADDR_LEN ; } break ; case ISIS_TLV_ISNEIGH_VARLEN : if ( ! ND_TTEST2 ( * tptr , 1 ) || tmp < 3 ) goto trunctlv ; lan_alen = * tptr ++ ; if ( lan_alen == 0 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>LAN<S2SV_blank>address<S2SV_blank>length<S2SV_blank>0<S2SV_blank>bytes<S2SV_blank>(invalid)\" ) ) ; break ; } tmp -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>LAN<S2SV_blank>address<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>\" , lan_alen ) ) ; while ( tmp >= lan_alen ) { ND_TCHECK2 ( * tptr , lan_alen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tIS<S2SV_blank>Neighbor:<S2SV_blank>%s\" , isis_print_id ( tptr , lan_alen ) ) ) ; tmp -= lan_alen ; tptr += lan_alen ; } break ; case ISIS_TLV_PADDING : break ; case ISIS_TLV_MT_IS_REACH : mt_len = isis_print_mtid ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; if ( mt_len == 0 ) goto trunctlv ; tptr += mt_len ; tmp -= mt_len ; while ( tmp >= 2 + NODE_ID_LEN + 3 + 1 ) { ext_is_len = isis_print_ext_is_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_type ) ; if ( ext_is_len == 0 ) goto trunctlv ; tmp -= ext_is_len ; tptr += ext_is_len ; } break ; case ISIS_TLV_IS_ALIAS_ID : while ( tmp >= NODE_ID_LEN + 1 ) { ext_is_len = isis_print_ext_is_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_type ) ; if ( ext_is_len == 0 ) goto trunctlv ; tmp -= ext_is_len ; tptr += ext_is_len ; } break ; case ISIS_TLV_EXT_IS_REACH : while ( tmp >= NODE_ID_LEN + 3 + 1 ) { ext_is_len = isis_print_ext_is_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_type ) ; if ( ext_is_len == 0 ) goto trunctlv ; tmp -= ext_is_len ; tptr += ext_is_len ; } break ; case ISIS_TLV_IS_REACH : ND_TCHECK2 ( * tptr , 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , tok2str ( isis_is_reach_virtual_values , \"bogus<S2SV_blank>virtual<S2SV_blank>flag<S2SV_blank>0x%02x\" , * tptr ++ ) ) ) ; tlv_is_reach = ( const struct isis_tlv_is_reach * ) tptr ; while ( tmp >= sizeof ( struct isis_tlv_is_reach ) ) { ND_TCHECK ( * tlv_is_reach ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IS<S2SV_blank>Neighbor:<S2SV_blank>%s\" , isis_print_id ( tlv_is_reach -> neighbor_nodeid , NODE_ID_LEN ) ) ) ; isis_print_metric_block ( ndo , & tlv_is_reach -> isis_metric_block ) ; tmp -= sizeof ( struct isis_tlv_is_reach ) ; tlv_is_reach ++ ; } break ; case ISIS_TLV_ESNEIGH : tlv_es_reach = ( const struct isis_tlv_es_reach * ) tptr ; while ( tmp >= sizeof ( struct isis_tlv_es_reach ) ) { ND_TCHECK ( * tlv_es_reach ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ES<S2SV_blank>Neighbor:<S2SV_blank>%s\" , isis_print_id ( tlv_es_reach -> neighbor_sysid , SYSTEM_ID_LEN ) ) ) ; isis_print_metric_block ( ndo , & tlv_es_reach -> isis_metric_block ) ; tmp -= sizeof ( struct isis_tlv_es_reach ) ; tlv_es_reach ++ ; } break ; case ISIS_TLV_INT_IP_REACH : case ISIS_TLV_EXT_IP_REACH : if ( ! isis_print_tlv_ip_reach ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_len ) ) return ( 1 ) ; break ; case ISIS_TLV_EXTD_IP_REACH : while ( tmp > 0 ) { ext_ip_len = isis_print_extd_ip_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , AF_INET ) ; if ( ext_ip_len == 0 ) goto trunctlv ; tptr += ext_ip_len ; tmp -= ext_ip_len ; } break ; case ISIS_TLV_MT_IP_REACH : mt_len = isis_print_mtid ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; if ( mt_len == 0 ) { goto trunctlv ; } tptr += mt_len ; tmp -= mt_len ; while ( tmp > 0 ) { ext_ip_len = isis_print_extd_ip_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , AF_INET ) ; if ( ext_ip_len == 0 ) goto trunctlv ; tptr += ext_ip_len ; tmp -= ext_ip_len ; } break ; case ISIS_TLV_IP6_REACH : while ( tmp > 0 ) { ext_ip_len = isis_print_extd_ip_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , AF_INET6 ) ; if ( ext_ip_len == 0 ) goto trunctlv ; tptr += ext_ip_len ; tmp -= ext_ip_len ; } break ; case ISIS_TLV_MT_IP6_REACH : mt_len = isis_print_mtid ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; if ( mt_len == 0 ) { goto trunctlv ; } tptr += mt_len ; tmp -= mt_len ; while ( tmp > 0 ) { ext_ip_len = isis_print_extd_ip_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , AF_INET6 ) ; if ( ext_ip_len == 0 ) goto trunctlv ; tptr += ext_ip_len ; tmp -= ext_ip_len ; } break ; case ISIS_TLV_IP6ADDR : while ( tmp >= sizeof ( struct in6_addr ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv6<S2SV_blank>interface<S2SV_blank>address:<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tptr += sizeof ( struct in6_addr ) ; tmp -= sizeof ( struct in6_addr ) ; } break ; case ISIS_TLV_AUTH : ND_TCHECK2 ( * tptr , 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s:<S2SV_blank>\" , tok2str ( isis_subtlv_auth_values , \"unknown<S2SV_blank>Authentication<S2SV_blank>type<S2SV_blank>0x%02x\" , * tptr ) ) ) ; switch ( * tptr ) { case ISIS_SUBTLV_AUTH_SIMPLE : if ( fn_printzp ( ndo , tptr + 1 , tlv_len - 1 , ndo -> ndo_snapend ) ) goto trunctlv ; break ; case ISIS_SUBTLV_AUTH_MD5 : for ( i = 1 ; i < tlv_len ; i ++ ) { ND_TCHECK2 ( * ( tptr + i ) , 1 ) ; ND_PRINT ( ( ndo , \"%02x\" , * ( tptr + i ) ) ) ; } if ( tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN + 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>(invalid<S2SV_blank>subTLV)<S2SV_blank>\" ) ) ; sigcheck = signature_verify ( ndo , optr , length , tptr + 1 , isis_clear_checksum_lifetime , header_lsp ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , tok2str ( signature_check_values , \"Unknown\" , sigcheck ) ) ) ; break ; case ISIS_SUBTLV_AUTH_GENERIC : ND_TCHECK2 ( * ( tptr + 1 ) , 2 ) ; key_id = EXTRACT_16BITS ( ( tptr + 1 ) ) ; ND_PRINT ( ( ndo , \"%u,<S2SV_blank>password:<S2SV_blank>\" , key_id ) ) ; for ( i = 1 + sizeof ( uint16_t ) ; i < tlv_len ; i ++ ) { ND_TCHECK2 ( * ( tptr + i ) , 1 ) ; ND_PRINT ( ( ndo , \"%02x\" , * ( tptr + i ) ) ) ; } break ; case ISIS_SUBTLV_AUTH_PRIVATE : default : if ( ! print_unknown_data ( ndo , tptr + 1 , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>\" , tlv_len - 1 ) ) return ( 0 ) ; break ; } break ; case ISIS_TLV_PTP_ADJ : tlv_ptp_adj = ( const struct isis_tlv_ptp_adj * ) tptr ; if ( tmp >= 1 ) { ND_TCHECK2 ( * tptr , 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Adjacency<S2SV_blank>State:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( isis_ptp_adjancey_values , \"unknown\" , * tptr ) , * tptr ) ) ; tmp -- ; } if ( tmp > sizeof ( tlv_ptp_adj -> extd_local_circuit_id ) ) { ND_TCHECK ( tlv_ptp_adj -> extd_local_circuit_id ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended<S2SV_blank>Local<S2SV_blank>circuit-ID:<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tlv_ptp_adj -> extd_local_circuit_id ) ) ) ; tmp -= sizeof ( tlv_ptp_adj -> extd_local_circuit_id ) ; } if ( tmp >= SYSTEM_ID_LEN ) { ND_TCHECK2 ( tlv_ptp_adj -> neighbor_sysid , SYSTEM_ID_LEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Neighbor<S2SV_blank>System-ID:<S2SV_blank>%s\" , isis_print_id ( tlv_ptp_adj -> neighbor_sysid , SYSTEM_ID_LEN ) ) ) ; tmp -= SYSTEM_ID_LEN ; } if ( tmp >= sizeof ( tlv_ptp_adj -> neighbor_extd_local_circuit_id ) ) { ND_TCHECK ( tlv_ptp_adj -> neighbor_extd_local_circuit_id ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Neighbor<S2SV_blank>Extended<S2SV_blank>Local<S2SV_blank>circuit-ID:<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tlv_ptp_adj -> neighbor_extd_local_circuit_id ) ) ) ; } break ; case ISIS_TLV_PROTOCOLS : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>NLPID(s):<S2SV_blank>\" ) ) ; while ( tmp > 0 ) { ND_TCHECK2 ( * ( tptr ) , 1 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>(0x%02x)\" , tok2str ( nlpid_values , \"unknown\" , * tptr ) , * tptr ) ) ; if ( tmp > 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; tptr ++ ; tmp -- ; } break ; case ISIS_TLV_MT_PORT_CAP : { ND_TCHECK2 ( * ( tptr ) , 2 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>MTID(s):<S2SV_blank>%d\" , ( EXTRACT_16BITS ( tptr ) >> 12 ) , ( EXTRACT_16BITS ( tptr ) & 0x0fff ) ) ) ; tmp = tmp - 2 ; tptr = tptr + 2 ; if ( tmp ) isis_print_mt_port_cap_subtlv ( ndo , tptr , tmp ) ; break ; } case ISIS_TLV_MT_CAPABILITY : ND_TCHECK2 ( * ( tptr ) , 2 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>O:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>MTID(s):<S2SV_blank>%d\" , ( EXTRACT_16BITS ( tptr ) >> 15 ) & 0x01 , ( EXTRACT_16BITS ( tptr ) >> 12 ) & 0x07 , EXTRACT_16BITS ( tptr ) & 0x0fff ) ) ; tmp = tmp - 2 ; tptr = tptr + 2 ; if ( tmp ) isis_print_mt_capability_subtlv ( ndo , tptr , tmp ) ; break ; case ISIS_TLV_TE_ROUTER_ID : ND_TCHECK2 ( * pptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Traffic<S2SV_blank>Engineering<S2SV_blank>Router<S2SV_blank>ID:<S2SV_blank>%s\" , ipaddr_string ( ndo , pptr ) ) ) ; break ; case ISIS_TLV_IPADDR : while ( tmp >= sizeof ( struct in_addr ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>interface<S2SV_blank>address:<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tptr += sizeof ( struct in_addr ) ; tmp -= sizeof ( struct in_addr ) ; } break ; case ISIS_TLV_HOSTNAME : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Hostname:<S2SV_blank>\" ) ) ; if ( fn_printzp ( ndo , tptr , tmp , ndo -> ndo_snapend ) ) goto trunctlv ; break ; case ISIS_TLV_SHARED_RISK_GROUP : if ( tmp < NODE_ID_LEN ) break ; ND_TCHECK2 ( * tptr , NODE_ID_LEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IS<S2SV_blank>Neighbor:<S2SV_blank>%s\" , isis_print_id ( tptr , NODE_ID_LEN ) ) ) ; tptr += ( NODE_ID_LEN ) ; tmp -= ( NODE_ID_LEN ) ; if ( tmp < 1 ) break ; ND_TCHECK2 ( * tptr , 1 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags:<S2SV_blank>[%s]\" , ISIS_MASK_TLV_SHARED_RISK_GROUP ( * tptr ++ ) ? \"numbered\" : \"unnumbered\" ) ) ; tmp -- ; if ( tmp < sizeof ( struct in_addr ) ) break ; ND_TCHECK2 ( * tptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>interface<S2SV_blank>address:<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tptr += sizeof ( struct in_addr ) ; tmp -= sizeof ( struct in_addr ) ; if ( tmp < sizeof ( struct in_addr ) ) break ; ND_TCHECK2 ( * tptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>neighbor<S2SV_blank>address:<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tptr += sizeof ( struct in_addr ) ; tmp -= sizeof ( struct in_addr ) ; while ( tmp >= 4 ) { ND_TCHECK2 ( * tptr , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Link-ID:<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr += 4 ; tmp -= 4 ; } break ; case ISIS_TLV_LSP : tlv_lsp = ( const struct isis_tlv_lsp * ) tptr ; while ( tmp >= sizeof ( struct isis_tlv_lsp ) ) { ND_TCHECK ( ( tlv_lsp -> lsp_id ) [ LSP_ID_LEN - 1 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>lsp-id:<S2SV_blank>%s\" , isis_print_id ( tlv_lsp -> lsp_id , LSP_ID_LEN ) ) ) ; ND_TCHECK2 ( tlv_lsp -> sequence_number , 4 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>seq:<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tlv_lsp -> sequence_number ) ) ) ; ND_TCHECK2 ( tlv_lsp -> remaining_lifetime , 2 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>lifetime:<S2SV_blank>%5ds\" , EXTRACT_16BITS ( tlv_lsp -> remaining_lifetime ) ) ) ; ND_TCHECK2 ( tlv_lsp -> checksum , 2 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>chksum:<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( tlv_lsp -> checksum ) ) ) ; tmp -= sizeof ( struct isis_tlv_lsp ) ; tlv_lsp ++ ; } break ; case ISIS_TLV_CHECKSUM : if ( tmp < ISIS_TLV_CHECKSUM_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_CHECKSUM_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>checksum:<S2SV_blank>0x%04x<S2SV_blank>\" , EXTRACT_16BITS ( tptr ) ) ) ; osi_print_cksum ( ndo , optr , EXTRACT_16BITS ( tptr ) , tptr - optr , length ) ; break ; case ISIS_TLV_POI : if ( tlv_len >= SYSTEM_ID_LEN + 1 ) { ND_TCHECK2 ( * tptr , SYSTEM_ID_LEN + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Purge<S2SV_blank>Originator<S2SV_blank>System-ID:<S2SV_blank>%s\" , isis_print_id ( tptr + 1 , SYSTEM_ID_LEN ) ) ) ; } if ( tlv_len == 2 * SYSTEM_ID_LEN + 1 ) { ND_TCHECK2 ( * tptr , 2 * SYSTEM_ID_LEN + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Received<S2SV_blank>from<S2SV_blank>System-ID:<S2SV_blank>%s\" , isis_print_id ( tptr + SYSTEM_ID_LEN + 1 , SYSTEM_ID_LEN ) ) ) ; } break ; case ISIS_TLV_MT_SUPPORTED : if ( tmp < ISIS_TLV_MT_SUPPORTED_MINLEN ) break ; while ( tmp > 1 ) { if ( tmp != 1 ) { mt_len = isis_print_mtid ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; if ( mt_len == 0 ) goto trunctlv ; tptr += mt_len ; tmp -= mt_len ; } else { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>invalid<S2SV_blank>MT-ID\" ) ) ; break ; } } break ; case ISIS_TLV_RESTART_SIGNALING : if ( tmp < ISIS_TLV_RESTART_SIGNALING_FLAGLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_RESTART_SIGNALING_FLAGLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( isis_restart_flag_values , \"none\" , * tptr ) ) ) ; tptr += ISIS_TLV_RESTART_SIGNALING_FLAGLEN ; tmp -= ISIS_TLV_RESTART_SIGNALING_FLAGLEN ; if ( tmp == 0 ) break ; if ( tmp < ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Remaining<S2SV_blank>holding<S2SV_blank>time<S2SV_blank>%us\" , EXTRACT_16BITS ( tptr ) ) ) ; tptr += ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN ; tmp -= ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN ; if ( tmp == SYSTEM_ID_LEN ) { ND_TCHECK2 ( * tptr , SYSTEM_ID_LEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>for<S2SV_blank>%s\" , isis_print_id ( tptr , SYSTEM_ID_LEN ) ) ) ; } break ; case ISIS_TLV_IDRP_INFO : if ( tmp < ISIS_TLV_IDRP_INFO_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_IDRP_INFO_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Inter-Domain<S2SV_blank>Information<S2SV_blank>Type:<S2SV_blank>%s\" , tok2str ( isis_subtlv_idrp_values , \"Unknown<S2SV_blank>(0x%02x)\" , * tptr ) ) ) ; switch ( * tptr ++ ) { case ISIS_SUBTLV_IDRP_ASN : ND_TCHECK2 ( * tptr , 2 ) ; ND_PRINT ( ( ndo , \"AS<S2SV_blank>Number:<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr ) ) ) ; break ; case ISIS_SUBTLV_IDRP_LOCAL : case ISIS_SUBTLV_IDRP_RES : default : if ( ! print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_len - 1 ) ) return ( 0 ) ; break ; } break ; case ISIS_TLV_LSP_BUFFERSIZE : if ( tmp < ISIS_TLV_LSP_BUFFERSIZE_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_LSP_BUFFERSIZE_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>LSP<S2SV_blank>Buffersize:<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr ) ) ) ; break ; case ISIS_TLV_PART_DIS : while ( tmp >= SYSTEM_ID_LEN ) { ND_TCHECK2 ( * tptr , SYSTEM_ID_LEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , isis_print_id ( tptr , SYSTEM_ID_LEN ) ) ) ; tptr += SYSTEM_ID_LEN ; tmp -= SYSTEM_ID_LEN ; } break ; case ISIS_TLV_PREFIX_NEIGH : if ( tmp < sizeof ( struct isis_metric_block ) ) break ; ND_TCHECK2 ( * tptr , sizeof ( struct isis_metric_block ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Metric<S2SV_blank>Block\" ) ) ; isis_print_metric_block ( ndo , ( const struct isis_metric_block * ) tptr ) ; tptr += sizeof ( struct isis_metric_block ) ; tmp -= sizeof ( struct isis_metric_block ) ; while ( tmp > 0 ) { ND_TCHECK2 ( * tptr , 1 ) ; prefix_len = * tptr ++ ; if ( prefix_len < 2 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tAddress:<S2SV_blank>prefix<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>2\" , prefix_len ) ) ; break ; } tmp -- ; if ( tmp < prefix_len / 2 ) break ; ND_TCHECK2 ( * tptr , prefix_len / 2 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tAddress:<S2SV_blank>%s/%u\" , isonsap_string ( ndo , tptr , prefix_len / 2 ) , prefix_len * 4 ) ) ; tptr += prefix_len / 2 ; tmp -= prefix_len / 2 ; } break ; case ISIS_TLV_IIH_SEQNR : if ( tmp < ISIS_TLV_IIH_SEQNR_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_IIH_SEQNR_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sequence<S2SV_blank>number:<S2SV_blank>%u\" , EXTRACT_32BITS ( tptr ) ) ) ; break ; case ISIS_TLV_VENDOR_PRIVATE : if ( tmp < ISIS_TLV_VENDOR_PRIVATE_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_VENDOR_PRIVATE_MINLEN ) ; vendor_id = EXTRACT_24BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Vendor:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( oui_values , \"Unknown\" , vendor_id ) , vendor_id ) ) ; tptr += 3 ; tmp -= 3 ; if ( tmp > 0 ) if ( ! print_unknown_data ( ndo , tptr , \"\\\\n\\\\t\\\\t\" , tmp ) ) return ( 0 ) ; break ; case ISIS_TLV_DECNET_PHASE4 : case ISIS_TLV_LUCENT_PRIVATE : case ISIS_TLV_IPAUTH : case ISIS_TLV_NORTEL_PRIVATE1 : case ISIS_TLV_NORTEL_PRIVATE2 : default : if ( ndo -> ndo_vflag <= 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t\\\\t\" , tlv_len ) ) return ( 0 ) ; } break ; } if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_len ) ) return ( 0 ) ; } pptr += tlv_len ; packet_len -= tlv_len ; } if ( packet_len != 0 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>straggler<S2SV_blank>bytes\" , packet_len ) ) ; } return ( 1 ) ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( 1 ) ; trunctlv : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp ) { ND_TCHECK2 ( * tptr , alen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6430\n\n```\nCWE-125 int main ( int argc , char * argv [ ] ) { <S2SV_StartBug> libettercap_init ( ) ; <S2SV_EndBug> ef_globals_alloc ( ) ; select_text_interface ( ) ; libettercap_ui_init ( ) ; fprintf ( stdout , \"\\\\n\" EC_COLOR_BOLD \"%s<S2SV_blank>%s\" EC_COLOR_END \"<S2SV_blank>copyright<S2SV_blank>%s<S2SV_blank>%s\\\\n\\\\n\" , PROGRAM , EC_VERSION , EC_COPYRIGHT , EC_AUTHORS ) ; EF_GBL -> lineno = 1 ; parse_options ( argc , argv ) ; if ( EF_GBL_OPTIONS -> source_file ) { yyin = fopen ( EF_GBL_OPTIONS -> source_file , \"r\" ) ; if ( yyin == NULL ) FATAL_ERROR ( \"Input<S2SV_blank>file<S2SV_blank>not<S2SV_blank>found<S2SV_blank>!\" ) ; } else { FATAL_ERROR ( \"No<S2SV_blank>source<S2SV_blank>file.\" ) ; } setbuf ( yyin , NULL ) ; setbuf ( stdout , NULL ) ; setbuf ( stderr , NULL ) ; load_tables ( ) ; load_constants ( ) ; fprintf ( stdout , \"\\\\n<S2SV_blank>Parsing<S2SV_blank>source<S2SV_blank>file<S2SV_blank>\\\\\\'%s\\\\\\'<S2SV_blank>\" , EF_GBL_OPTIONS -> source_file ) ; fflush ( stdout ) ; ef_debug ( 1 , \"\\\\n\" ) ; if ( yyparse ( ) == 0 ) fprintf ( stdout , \"<S2SV_blank>done.\\\\n\\\\n\" ) ; else fprintf ( stdout , \"\\\\n\\\\nThe<S2SV_blank>script<S2SV_blank>contains<S2SV_blank>errors...\\\\n\\\\n\" ) ; <S2SV_StartBug> if ( write_output ( ) != E_SUCCESS ) <S2SV_EndBug> FATAL_ERROR ( \"Cannot<S2SV_blank>write<S2SV_blank>output<S2SV_blank>file<S2SV_blank>(%s)\" , EF_GBL_OPTIONS -> output_file ) ; ef_globals_free ( ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) { int ret_value = 0 ; <S2SV_ModStart> \"\\\\n\\\\nThe<S2SV_blank>script<S2SV_blank>contains<S2SV_blank>errors...\\\\n\\\\n\" ) ; ret_value = <S2SV_ModEnd> write_output ( ) <S2SV_ModStart> write_output ( ) ; if ( ret_value == - E_NOTHANDLED ) FATAL_ERROR ( \"Cannot<S2SV_blank>write<S2SV_blank>output<S2SV_blank>file<S2SV_blank>(%s):<S2SV_blank>the<S2SV_blank>filter<S2SV_blank>is<S2SV_blank>not<S2SV_blank>correctly<S2SV_blank>handled.\" , EF_GBL_OPTIONS -> output_file ) ; else if ( ret_value == - E_INVALID ) FATAL_ERROR ( \"Cannot<S2SV_blank>write<S2SV_blank>output<S2SV_blank>file<S2SV_blank>(%s):<S2SV_blank>the<S2SV_blank>filter<S2SV_blank>format<S2SV_blank>is<S2SV_blank>not<S2SV_blank>correct.<S2SV_blank>\" <S2SV_ModEnd> , EF_GBL_OPTIONS ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4804\n\n```\nCWE-119 static void dump_boot ( DOS_FS * fs , struct boot_sector * b , unsigned lss ) { unsigned short sectors ; printf ( \"Boot<S2SV_blank>sector<S2SV_blank>contents:\\\\n\" ) ; if ( ! atari_format ) { char id [ 9 ] ; strncpy ( id , ( const char * ) b -> system_id , 8 ) ; id [ 8 ] = 0 ; printf ( \"System<S2SV_blank>ID<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , id ) ; } else { printf ( \"Serial<S2SV_blank>number<S2SV_blank>0x%x\\\\n\" , b -> system_id [ 5 ] | ( b -> system_id [ 6 ] << 8 ) | ( b -> system_id [ 7 ] << 16 ) ) ; } printf ( \"Media<S2SV_blank>byte<S2SV_blank>0x%02x<S2SV_blank>(%s)\\\\n\" , b -> media , get_media_descr ( b -> media ) ) ; printf ( \"%10d<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>logical<S2SV_blank>sector\\\\n\" , GET_UNALIGNED_W ( b -> sector_size ) ) ; printf ( \"%10d<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>cluster\\\\n\" , fs -> cluster_size ) ; printf ( \"%10d<S2SV_blank>reserved<S2SV_blank>sector%s\\\\n\" , le16toh ( b -> reserved ) , le16toh ( b -> reserved ) == 1 ? \"\" : \"s\" ) ; printf ( \"First<S2SV_blank>FAT<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>byte<S2SV_blank>%llu<S2SV_blank>(sector<S2SV_blank>%llu)\\\\n\" , ( unsigned long long ) fs -> fat_start , ( unsigned long long ) fs -> fat_start / lss ) ; printf ( \"%10d<S2SV_blank>FATs,<S2SV_blank>%d<S2SV_blank>bit<S2SV_blank>entries\\\\n\" , b -> fats , fs -> fat_bits ) ; <S2SV_StartBug> printf ( \"%10d<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>FAT<S2SV_blank>(=<S2SV_blank>%u<S2SV_blank>sectors)\\\\n\" , fs -> fat_size , <S2SV_EndBug> <S2SV_StartBug> fs -> fat_size / lss ) ; <S2SV_EndBug> if ( ! fs -> root_cluster ) { printf ( \"Root<S2SV_blank>directory<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>byte<S2SV_blank>%llu<S2SV_blank>(sector<S2SV_blank>%llu)\\\\n\" , ( unsigned long long ) fs -> root_start , ( unsigned long long ) fs -> root_start / lss ) ; printf ( \"%10d<S2SV_blank>root<S2SV_blank>directory<S2SV_blank>entries\\\\n\" , fs -> root_entries ) ; } else { printf ( \"Root<S2SV_blank>directory<S2SV_blank>start<S2SV_blank>at<S2SV_blank>cluster<S2SV_blank>%lu<S2SV_blank>(arbitrary<S2SV_blank>size)\\\\n\" , ( unsigned long ) fs -> root_cluster ) ; } printf ( \"Data<S2SV_blank>area<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>byte<S2SV_blank>%llu<S2SV_blank>(sector<S2SV_blank>%llu)\\\\n\" , ( unsigned long long ) fs -> data_start , ( unsigned long long ) fs -> data_start / lss ) ; printf ( \"%10lu<S2SV_blank>data<S2SV_blank>clusters<S2SV_blank>(%llu<S2SV_blank>bytes)\\\\n\" , ( unsigned long ) fs -> data_clusters , ( unsigned long long ) fs -> data_clusters * fs -> cluster_size ) ; printf ( \"%u<S2SV_blank>sectors/track,<S2SV_blank>%u<S2SV_blank>heads\\\\n\" , le16toh ( b -> secs_track ) , le16toh ( b -> heads ) ) ; printf ( \"%10u<S2SV_blank>hidden<S2SV_blank>sectors\\\\n\" , atari_format ? ( ( ( unsigned char * ) & b -> hidden ) [ 0 ] | ( ( unsigned char * ) & b -> hidden ) [ 1 ] << 8 ) : le32toh ( b -> hidden ) ) ; sectors = GET_UNALIGNED_W ( b -> sectors ) ; printf ( \"%10u<S2SV_blank>sectors<S2SV_blank>total\\\\n\" , sectors ? sectors : le32toh ( b -> total_sect ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; printf ( \"%10lld<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>FAT<S2SV_blank>(=<S2SV_blank>%llu<S2SV_blank>sectors)\\\\n\" , ( long long ) <S2SV_ModEnd> fs -> fat_size <S2SV_ModStart> -> fat_size , ( long long )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void update_stats ( VP9_COMP * cpi ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; const MACROBLOCK * const x = & cpi -> mb ; const MACROBLOCKD * const xd = & x -> e_mbd ; const MODE_INFO * const mi = xd -> mi [ 0 ] ; const MB_MODE_INFO * const mbmi = & mi -> mbmi ; <S2SV_StartBug> if ( ! frame_is_intra_only ( cm ) ) { <S2SV_EndBug> <S2SV_StartBug> const int seg_ref_active = vp9_segfeature_active ( & cm -> seg , mbmi -> segment_id , <S2SV_EndBug> SEG_LVL_REF_FRAME ) ; if ( ! seg_ref_active ) { <S2SV_StartBug> FRAME_COUNTS * const counts = & cm -> counts ; <S2SV_EndBug> const int inter_block = is_inter_block ( mbmi ) ; counts -> intra_inter [ vp9_get_intra_inter_context ( xd ) ] [ inter_block ] ++ ; if ( inter_block ) { const MV_REFERENCE_FRAME ref0 = mbmi -> ref_frame [ 0 ] ; if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) counts -> comp_inter [ vp9_get_reference_mode_context ( cm , xd ) ] [ has_second_ref ( mbmi ) ] ++ ; if ( has_second_ref ( mbmi ) ) { counts -> comp_ref [ vp9_get_pred_context_comp_ref_p ( cm , xd ) ] [ ref0 == GOLDEN_FRAME ] ++ ; } else { counts -> single_ref [ vp9_get_pred_context_single_ref_p1 ( xd ) ] [ 0 ] [ ref0 != LAST_FRAME ] ++ ; if ( ref0 != LAST_FRAME ) counts -> single_ref [ vp9_get_pred_context_single_ref_p2 ( xd ) ] [ 1 ] [ ref0 != GOLDEN_FRAME ] ++ ; } } } <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void update_stats ( VP9_COMMON * cm , ThreadData * td ) { const MACROBLOCK * x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> -> mbmi ; const MB_MODE_INFO_EXT * const mbmi_ext = x -> mbmi_ext ; const BLOCK_SIZE bsize = mbmi -> sb_type ; <S2SV_ModStart> ) ) { FRAME_COUNTS * const counts = td -> counts ; const int inter_block = is_inter_block ( mbmi ) ; <S2SV_ModStart> int seg_ref_active = segfeature_active <S2SV_ModEnd> ( & cm <S2SV_ModStart> seg_ref_active ) { <S2SV_ModEnd> counts -> intra_inter <S2SV_ModStart> } } } if ( inter_block && ! segfeature_active ( & cm -> seg , mbmi -> segment_id , SEG_LVL_SKIP ) ) { const int mode_ctx = mbmi_ext -> mode_context [ mbmi -> ref_frame [ 0 ] ] ; if ( bsize >= BLOCK_8X8 ) { const PREDICTION_MODE mode = mbmi -> mode ; ++ counts -> inter_mode [ mode_ctx ] [ INTER_OFFSET ( mode ) ] ; } else { const int num_4x4_w = num_4x4_blocks_wide_lookup [ bsize ] ; const int num_4x4_h = num_4x4_blocks_high_lookup [ bsize ] ; int idx , idy ; for ( idy = 0 ; idy < 2 ; idy += num_4x4_h ) { for ( idx = 0 ; idx < 2 ; idx += num_4x4_w ) { const int j = idy * 2 + idx ; const PREDICTION_MODE b_mode = mi -> bmi [ j ] . as_mode ; ++ counts -> inter_mode [ mode_ctx ] [ INTER_OFFSET ( b_mode ) ] ; } } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static void commit_tree ( struct mount * mnt , struct mount * shadows ) { struct mount * parent = mnt -> mnt_parent ; struct mount * m ; LIST_HEAD ( head ) ; struct mnt_namespace * n = parent -> mnt_ns ; BUG_ON ( parent == mnt ) ; list_add_tail ( & head , & mnt -> mnt_list ) ; list_for_each_entry ( m , & head , mnt_list ) m -> mnt_ns = n ; list_splice ( & head , n -> list . prev ) ; <S2SV_StartBug> attach_shadowed ( mnt , parent , shadows ) ; <S2SV_EndBug> touch_mnt_namespace ( n ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prev ) ; n -> mounts += n -> pending_mounts ; n -> pending_mounts = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-1187(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15900\n\n```\nCWE-1187 static int parseuid ( const char * s , uid_t * uid ) { struct passwd * pw ; <S2SV_StartBug> const char * errstr ; <S2SV_EndBug> if ( ( pw = getpwnam ( s ) ) != NULL ) { * uid = pw -> pw_uid ; return 0 ; } # if ! defined ( __linux__ ) && ! defined ( __NetBSD__ ) * uid = strtonum ( s , 0 , UID_MAX , & errstr ) ; <S2SV_StartBug> # else <S2SV_EndBug> sscanf ( s , \"%d\" , uid ) ; <S2SV_StartBug> # endif <S2SV_EndBug> if ( errstr ) return - 1 ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * pw ; # if ! defined ( __linux__ ) && ! defined ( __NetBSD__ ) <S2SV_ModStart> char * errstr = NULL ; # else int status ; # endif <S2SV_ModEnd> if ( ( <S2SV_ModStart> errstr ) ; if ( errstr ) return - 1 ; # else status = <S2SV_ModEnd> sscanf ( s <S2SV_ModStart> uid ) ; if ( status != 1 <S2SV_ModEnd> ) return - <S2SV_ModStart> - 1 ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9907\n\n```\nCWE-20 static MagickBooleanType ReadUncompressedRGB ( Image * image , DDSInfo * dds_info , ExceptionInfo * exception ) { PixelPacket * q ; ssize_t x , y ; unsigned short color ; if ( dds_info -> pixelformat . rgb_bitcount == 8 ) ( void ) SetImageType ( image , GrayscaleType ) ; else if ( dds_info -> pixelformat . rgb_bitcount == 16 && ! IsBitMask ( dds_info -> pixelformat , 0xf800 , 0x07e0 , 0x001f , 0x0000 ) ) ThrowBinaryException ( CorruptImageError , \"ImageTypeNotSupported\" , image -> filename ) ; for ( y = 0 ; y < ( ssize_t ) dds_info -> height ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , dds_info -> width , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) return MagickFalse ; for ( x = 0 ; x < ( ssize_t ) dds_info -> width ; x ++ ) { if ( dds_info -> pixelformat . rgb_bitcount == 8 ) SetPixelGray ( q , ScaleCharToQuantum ( ReadBlobByte ( image ) ) ) ; else if ( dds_info -> pixelformat . rgb_bitcount == 16 ) { color = ReadBlobShort ( image ) ; SetPixelRed ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( color >> 11 ) / 31.0 ) * 255 ) ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( ( unsigned short ) ( color << 5 ) >> 10 ) / 63.0 ) * 255 ) ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( ( unsigned short ) ( color << 11 ) >> 11 ) / 31.0 ) * 255 ) ) ) ; } else { SetPixelBlue ( q , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ) ; SetPixelRed ( q , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ) ; if ( dds_info -> pixelformat . rgb_bitcount == 32 ) ( void ) ReadBlobByte ( image ) ; } SetPixelAlpha ( q , QuantumRange ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) return MagickFalse ; } <S2SV_StartBug> SkipRGBMipmaps ( image , dds_info , 3 ) ; <S2SV_EndBug> return MagickTrue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MagickFalse ; } return ( <S2SV_ModStart> dds_info , 3 , exception ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_fht8x8_sse2 ( const int16_t * input , int16_t * output , <S2SV_EndBug> int stride , int tx_type ) { __m128i in [ 8 ] ; switch ( tx_type ) { case DCT_DCT : <S2SV_StartBug> vp9_fdct8x8_sse2 ( input , output , stride ) ; <S2SV_EndBug> break ; case ADST_DCT : load_buffer_8x8 ( input , in , stride ) ; fadst8_sse2 ( in ) ; fdct8_sse2 ( in ) ; right_shift_8x8 ( in , 1 ) ; write_buffer_8x8 ( output , in , 8 ) ; break ; case DCT_ADST : load_buffer_8x8 ( input , in , stride ) ; fdct8_sse2 ( in ) ; fadst8_sse2 ( in ) ; right_shift_8x8 ( in , 1 ) ; write_buffer_8x8 ( output , in , 8 ) ; break ; case ADST_ADST : load_buffer_8x8 ( input , in , stride ) ; fadst8_sse2 ( in ) ; fadst8_sse2 ( in ) ; right_shift_8x8 ( in , 1 ) ; write_buffer_8x8 ( output , in , 8 ) ; break ; default : assert ( 0 ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * input , tran_low_t <S2SV_ModEnd> * output , <S2SV_ModStart> case DCT_DCT : vpx_fdct8x8_sse2 <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4160\n\n```\nCWE-000 static Curves16Data * CurvesAlloc ( cmsContext ContextID , int nCurves , int nElements , cmsToneCurve * * G ) { int i , j ; Curves16Data * c16 ; c16 = _cmsMallocZero ( ContextID , sizeof ( Curves16Data ) ) ; if ( c16 == NULL ) return NULL ; c16 -> nCurves = nCurves ; c16 -> nElements = nElements ; c16 -> Curves = _cmsCalloc ( ContextID , nCurves , sizeof ( cmsUInt16Number * ) ) ; if ( c16 -> Curves == NULL ) return NULL ; for ( i = 0 ; i < nCurves ; i ++ ) { <S2SV_StartBug> c16 -> Curves [ i ] = _cmsCalloc ( ContextID , nElements , sizeof ( cmsUInt16Number ) ) ; <S2SV_EndBug> if ( nElements == 256 ) { for ( j = 0 ; j < nElements ; j ++ ) { c16 -> Curves [ i ] [ j ] = cmsEvalToneCurve16 ( G [ i ] , FROM_8_TO_16 ( j ) ) ; } } else { for ( j = 0 ; j < nElements ; j ++ ) { c16 -> Curves [ i ] [ j ] = cmsEvalToneCurve16 ( G [ i ] , ( cmsUInt16Number ) j ) ; } } } return c16 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( c16 -> Curves [ i ] == NULL ) { for ( j = 0 ; j < i ; j ++ ) { _cmsFree ( ContextID , c16 -> Curves [ j ] ) ; } _cmsFree ( ContextID , c16 -> Curves ) ; _cmsFree ( ContextID , c16 ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t mqttSnClientSendUnsubscribe ( MqttSnClientContext * context , const char_t * topicName ) { error_t error ; systime_t time ; uint16_t topicId ; MqttSnFlags flags ; error = NO_ERROR ; flags . all = 0 ; topicId = mqttSnClientFindPredefTopicName ( context , topicName ) ; if ( topicId != MQTT_SN_INVALID_TOPIC_ID ) { flags . topicIdType = MQTT_SN_PREDEFINED_TOPIC_ID ; } else { <S2SV_StartBug> if ( osStrlen ( topicName ) == 2 && strchr ( topicName , '#' ) == NULL && <S2SV_EndBug> <S2SV_StartBug> strchr ( topicName , '+' ) == NULL ) <S2SV_EndBug> { flags . topicIdType = MQTT_SN_SHORT_TOPIC_NAME ; } else { flags . topicIdType = MQTT_SN_NORMAL_TOPIC_NAME ; } error = mqttSnFormatUnsubscribe ( & context -> message , flags , context -> msgId , topicId , topicName ) ; } if ( ! error ) { TRACE_INFO ( \"Sending<S2SV_blank>UNSUBSCRIBE<S2SV_blank>message<S2SV_blank>(%\" PRIuSIZE \"<S2SV_blank>bytes)...\\\\r\\\\n\" , context -> message . length ) ; mqttSnDumpMessage ( context -> message . buffer , context -> message . length ) ; error = mqttSnClientSendDatagram ( context , context -> message . buffer , context -> message . length ) ; time = osGetSystemTime ( ) ; context -> retransmitStartTime = time ; context -> keepAliveTimestamp = time ; context -> state = MQTT_SN_CLIENT_STATE_SENDING_REQ ; context -> msgType = MQTT_SN_MSG_TYPE_UNSUBSCRIBE ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 2 && osStrchr <S2SV_ModEnd> ( topicName , <S2SV_ModStart> == NULL && osStrchr <S2SV_ModEnd> ( topicName ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6545\n\n```\nCWE-200 static int rfcomm_sock_getsockopt ( struct socket * sock , int level , int optname , char __user * optval , int __user * optlen ) { struct sock * sk = sock -> sk ; struct bt_security sec ; int len , err = 0 ; BT_DBG ( \"sk<S2SV_blank>%p\" , sk ) ; if ( level == SOL_RFCOMM ) return rfcomm_sock_getsockopt_old ( sock , optname , optval , optlen ) ; if ( level != SOL_BLUETOOTH ) return - ENOPROTOOPT ; if ( get_user ( len , optlen ) ) return - EFAULT ; lock_sock ( sk ) ; switch ( optname ) { case BT_SECURITY : if ( sk -> sk_type != SOCK_STREAM ) { err = - EINVAL ; break ; } sec . level = rfcomm_pi ( sk ) -> sec_level ; <S2SV_StartBug> len = min_t ( unsigned int , len , sizeof ( sec ) ) ; <S2SV_EndBug> if ( copy_to_user ( optval , ( char * ) & sec , len ) ) err = - EFAULT ; break ; case BT_DEFER_SETUP : if ( sk -> sk_state != BT_BOUND && sk -> sk_state != BT_LISTEN ) { err = - EINVAL ; break ; } if ( put_user ( test_bit ( BT_SK_DEFER_SETUP , & bt_sk ( sk ) -> flags ) , ( u32 __user * ) optval ) ) err = - EFAULT ; break ; default : err = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sec_level ; sec . key_size = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11384\n\n```\nCWE-125 static int sh_op ( RAnal * anal , RAnalOp * op , ut64 addr , const ut8 * data , int len ) { ut8 op_MSB , op_LSB ; int ret ; <S2SV_StartBug> if ( ! data ) <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> memset ( op , '\\\\0' , sizeof ( RAnalOp ) ) ; op -> addr = addr ; op -> type = R_ANAL_OP_TYPE_UNK ; op -> jump = op -> fail = - 1 ; op -> ptr = op -> val = - 1 ; op -> size = 2 ; op_MSB = anal -> big_endian ? data [ 0 ] : data [ 1 ] ; op_LSB = anal -> big_endian ? data [ 1 ] : data [ 0 ] ; ret = first_nibble_decode [ ( op_MSB >> 4 ) & 0x0F ] ( anal , op , ( ut16 ) ( op_MSB << 8 | op_LSB ) ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! data || len < 2 ) { <S2SV_ModEnd> return 0 ; <S2SV_ModStart> return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 void show_object_with_name ( FILE * out , struct object * obj , <S2SV_StartBug> struct strbuf * path , const char * component ) <S2SV_EndBug> { char * name = path_name ( path , component ) ; char * p ; fprintf ( out , \"%s<S2SV_blank>\" , oid_to_hex ( & obj -> oid ) ) ; for ( p = name ; * p && * p != '\\\\n' ; p ++ ) fputc ( * p , out ) ; fputc ( '\\\\n' , out ) ; <S2SV_StartBug> free ( name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name ) { const <S2SV_ModEnd> char * p <S2SV_ModStart> out ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 int yr_re_fast_exec ( uint8_t * code , uint8_t * input_data , <S2SV_StartBug> size_t input_size , <S2SV_EndBug> int flags , RE_MATCH_CALLBACK_FUNC callback , void * callback_args ) { RE_REPEAT_ANY_ARGS * repeat_any_args ; uint8_t * code_stack [ MAX_FAST_RE_STACK ] ; uint8_t * input_stack [ MAX_FAST_RE_STACK ] ; int matches_stack [ MAX_FAST_RE_STACK ] ; uint8_t * ip = code ; uint8_t * input = input_data ; uint8_t * next_input ; uint8_t * next_opcode ; uint8_t mask ; uint8_t value ; int i ; int stop ; int input_incr ; int sp = 0 ; int bytes_matched ; <S2SV_StartBug> int max_bytes_matched = input_size ; <S2SV_EndBug> input_incr = flags & RE_FLAGS_BACKWARDS ? - 1 : 1 ; if ( flags & RE_FLAGS_BACKWARDS ) input -- ; code_stack [ sp ] = code ; input_stack [ sp ] = input ; matches_stack [ sp ] = 0 ; sp ++ ; while ( sp > 0 ) { sp -- ; ip = code_stack [ sp ] ; input = input_stack [ sp ] ; bytes_matched = matches_stack [ sp ] ; stop = FALSE ; while ( ! stop ) { if ( * ip == RE_OPCODE_MATCH ) { if ( flags & RE_FLAGS_EXHAUSTIVE ) { int cb_result = callback ( flags & RE_FLAGS_BACKWARDS ? input + 1 : input_data , bytes_matched , flags , callback_args ) ; switch ( cb_result ) { case ERROR_INSUFFICIENT_MEMORY : return - 2 ; case ERROR_TOO_MANY_MATCHES : return - 3 ; default : if ( cb_result != ERROR_SUCCESS ) return - 4 ; } break ; } else { return bytes_matched ; } } if ( bytes_matched >= max_bytes_matched ) break ; switch ( * ip ) { case RE_OPCODE_LITERAL : if ( * input == * ( ip + 1 ) ) { bytes_matched ++ ; input += input_incr ; ip += 2 ; } else { stop = TRUE ; } break ; case RE_OPCODE_MASKED_LITERAL : value = * ( int16_t * ) ( ip + 1 ) & 0xFF ; mask = * ( int16_t * ) ( ip + 1 ) >> 8 ; if ( ( * input & mask ) == value ) { bytes_matched ++ ; input += input_incr ; ip += 3 ; } else { stop = TRUE ; } break ; case RE_OPCODE_ANY : bytes_matched ++ ; input += input_incr ; ip += 1 ; break ; case RE_OPCODE_REPEAT_ANY_UNGREEDY : repeat_any_args = ( RE_REPEAT_ANY_ARGS * ) ( ip + 1 ) ; next_opcode = ip + 1 + sizeof ( RE_REPEAT_ANY_ARGS ) ; for ( i = repeat_any_args -> min + 1 ; i <= repeat_any_args -> max ; i ++ ) { next_input = input + i * input_incr ; if ( bytes_matched + i >= max_bytes_matched ) break ; if ( * ( next_opcode ) != RE_OPCODE_LITERAL || ( * ( next_opcode ) == RE_OPCODE_LITERAL && * ( next_opcode + 1 ) == * next_input ) ) { if ( sp >= MAX_FAST_RE_STACK ) return - 4 ; code_stack [ sp ] = next_opcode ; input_stack [ sp ] = next_input ; matches_stack [ sp ] = bytes_matched + i ; sp ++ ; } } input += input_incr * repeat_any_args -> min ; bytes_matched += repeat_any_args -> min ; ip = next_opcode ; break ; default : assert ( FALSE ) ; } } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> input_data , size_t input_forwards_size , size_t input_backwards_size <S2SV_ModEnd> , int flags <S2SV_ModStart> ; int max_bytes_matched ; max_bytes_matched = flags & RE_FLAGS_BACKWARDS ? input_backwards_size : input_forwards_size <S2SV_ModEnd> ; input_incr =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _hostsock_recvfrom ( oe_fd_t * sock_ , void * buf , size_t count , int flags , <S2SV_StartBug> const struct oe_sockaddr * src_addr , <S2SV_EndBug> oe_socklen_t * addrlen ) { ssize_t ret = - 1 ; sock_t * sock = _cast_sock ( sock_ ) ; <S2SV_StartBug> oe_socklen_t addrlen_in = 0 ; <S2SV_EndBug> oe_errno = 0 ; <S2SV_StartBug> if ( ! sock || ( count && ! buf ) ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( addrlen ) addrlen_in = * addrlen ; if ( oe_syscall_recvfrom_ocall ( & ret , sock -> host_fd , buf , count , flags , <S2SV_StartBug> ( struct oe_sockaddr * ) src_addr , <S2SV_EndBug> addrlen_in , <S2SV_StartBug> addrlen ) != OE_OK ) <S2SV_EndBug> { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> done : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int flags , <S2SV_ModEnd> struct oe_sockaddr * <S2SV_ModStart> ; oe_socklen_t addrlen_in = 0 ; oe_socklen_t addrlen_out <S2SV_ModStart> ! buf ) || count > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( src_addr && <S2SV_ModEnd> addrlen ) addrlen_in <S2SV_ModStart> , flags , <S2SV_ModEnd> src_addr , addrlen_in <S2SV_ModStart> , addrlen_in , & addrlen_out <S2SV_ModEnd> ) != OE_OK <S2SV_ModStart> ) ; } if ( src_addr && addrlen ) { if ( addrlen_out > sizeof ( struct oe_sockaddr_storage ) ) OE_RAISE_ERRNO ( OE_EINVAL ) ; * addrlen = addrlen_out ; } if ( ret > ( ssize_t ) count ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_rc_init ( const VP9_CONFIG * oxcf , int pass , RATE_CONTROL * rc ) { <S2SV_EndBug> <S2SV_StartBug> if ( pass == 0 && oxcf -> end_usage == USAGE_STREAM_FROM_SERVER ) { <S2SV_EndBug> <S2SV_StartBug> rc -> avg_frame_qindex [ 0 ] = oxcf -> worst_allowed_q ; <S2SV_EndBug> <S2SV_StartBug> rc -> avg_frame_qindex [ 1 ] = oxcf -> worst_allowed_q ; <S2SV_EndBug> rc -> avg_frame_qindex [ 2 ] = oxcf -> worst_allowed_q ; } else { <S2SV_StartBug> rc -> avg_frame_qindex [ 0 ] = ( oxcf -> worst_allowed_q + <S2SV_EndBug> oxcf -> best_allowed_q ) / 2 ; <S2SV_StartBug> rc -> avg_frame_qindex [ 1 ] = ( oxcf -> worst_allowed_q + <S2SV_EndBug> oxcf -> best_allowed_q ) / 2 ; <S2SV_StartBug> rc -> avg_frame_qindex [ 2 ] = ( oxcf -> worst_allowed_q + <S2SV_EndBug> oxcf -> best_allowed_q ) / 2 ; } <S2SV_StartBug> rc -> last_q [ 0 ] = oxcf -> best_allowed_q ; <S2SV_EndBug> rc -> last_q [ 1 ] = oxcf -> best_allowed_q ; rc -> last_q [ 2 ] = oxcf -> best_allowed_q ; rc -> buffer_level = oxcf -> starting_buffer_level ; rc -> bits_off_target = oxcf -> starting_buffer_level ; rc -> rolling_target_bits = rc -> av_per_frame_bandwidth ; rc -> rolling_actual_bits = rc -> av_per_frame_bandwidth ; rc -> long_rolling_target_bits = rc -> av_per_frame_bandwidth ; rc -> long_rolling_actual_bits = rc -> av_per_frame_bandwidth ; rc -> total_actual_bits = 0 ; rc -> total_target_vs_actual = 0 ; rc -> baseline_gf_interval = DEFAULT_GF_INTERVAL ; rc -> frames_since_key = 8 ; rc -> this_key_frame_forced = 0 ; rc -> next_key_frame_forced = 0 ; rc -> source_alt_ref_pending = 0 ; rc -> source_alt_ref_active = 0 ; rc -> frames_till_gf_update_due = 0 ; rc -> ni_av_qi = oxcf -> worst_allowed_q ; rc -> ni_tot_qi = 0 ; rc -> ni_frames = 0 ; rc -> tot_q = 0.0 ; rc -> avg_q = vp9_convert_qindex_to_q ( oxcf -> worst_allowed_q ) ; rc -> rate_correction_factor = 1.0 ; rc -> key_frame_rate_correction_factor = 1.0 ; rc -> gf_rate_correction_factor = 1.0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_rc_init ( const VP9EncoderConfig <S2SV_ModEnd> * oxcf , <S2SV_ModStart> rc ) { int i ; <S2SV_ModStart> && oxcf -> rc_mode == VPX_CBR <S2SV_ModEnd> ) { rc <S2SV_ModStart> -> avg_frame_qindex [ KEY_FRAME <S2SV_ModEnd> ] = oxcf <S2SV_ModStart> -> avg_frame_qindex [ INTER_FRAME <S2SV_ModEnd> ] = oxcf <S2SV_ModStart> -> avg_frame_qindex [ KEY_FRAME <S2SV_ModEnd> ] = ( <S2SV_ModStart> -> avg_frame_qindex [ INTER_FRAME <S2SV_ModEnd> ] = ( <S2SV_ModStart> / 2 ; } rc -> last_q [ KEY_FRAME ] = oxcf -> best_allowed_q ; rc -> last_q [ INTER_FRAME ] = oxcf -> worst_allowed_q ; rc -> buffer_level = rc -> starting_buffer_level ; rc -> bits_off_target = rc -> starting_buffer_level ; rc -> rolling_target_bits = rc -> avg_frame_bandwidth ; rc -> rolling_actual_bits = rc -> avg_frame_bandwidth ; rc -> long_rolling_target_bits = rc -> avg_frame_bandwidth ; rc -> long_rolling_actual_bits = rc -> avg_frame_bandwidth ; rc -> total_actual_bits = 0 ; rc -> total_target_bits = 0 ; rc -> total_target_vs_actual = 0 ; rc -> frames_since_key = 8 ; rc -> this_key_frame_forced = 0 ; rc -> next_key_frame_forced = 0 ; rc -> source_alt_ref_pending = 0 ; rc -> source_alt_ref_active = 0 ; rc -> frames_till_gf_update_due = 0 ; rc -> ni_av_qi = oxcf -> worst_allowed_q ; rc -> ni_tot_qi = 0 ; rc -> ni_frames = 0 ; rc -> tot_q = 0.0 ; rc -> avg_q = vp9_convert_qindex_to_q ( oxcf -> worst_allowed_q , oxcf -> bit_depth ) ; for ( i = 0 ; i < RATE_FACTOR_LEVELS ; ++ i ) { rc -> rate_correction_factors [ i ] = 1.0 ; } rc -> min_gf_interval = oxcf -> min_gf_interval ; rc -> max_gf_interval = oxcf -> max_gf_interval ; if ( rc -> min_gf_interval == 0 ) rc -> min_gf_interval = vp9_rc_get_default_min_gf_interval ( oxcf -> width , oxcf -> height , oxcf -> init_framerate ) ; if ( rc -> max_gf_interval == 0 ) rc -> max_gf_interval = vp9_rc_get_default_max_gf_interval ( oxcf -> init_framerate , rc -> min_gf_interval ) ; rc -> baseline_gf_interval = ( rc -> min_gf_interval + rc -> max_gf_interval <S2SV_ModEnd> ) / 2 <S2SV_ModStart> 2 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12135\n\n```\nCWE-190 static bcon_error_t bson_append_bcon_with_state ( bson * b , const bcon * bc , bcon_state_t start_state ) { bcon_error_t ret = BCON_OK ; bcon_state_t state = start_state ; char * key = 0 ; char * typespec = 0 ; unsigned char doc_stack [ DOC_STACK_SIZE ] ; size_t doc_stack_pointer = 0 ; size_t array_index = 0 ; <S2SV_StartBug> unsigned int array_index_stack [ ARRAY_INDEX_STACK_SIZE ] ; <S2SV_EndBug> size_t array_index_stack_pointer = 0 ; char array_index_buffer [ ARRAY_INDEX_BUFFER_SIZE ] ; int end_of_data ; const bcon * bcp ; for ( end_of_data = 0 , bcp = bc ; ret == BCON_OK && ! end_of_data ; bcp ++ ) { bcon bci = * bcp ; char * s = bci . s ; switch ( state ) { case State_Element : switch ( bcon_token ( s ) ) { case Token_CloseBrace : bson_append_finish_object ( b ) ; DOC_POP_STATE ; break ; case Token_End : end_of_data = 1 ; break ; default : key = s ; state = State_DocSpecValue ; break ; } break ; case State_DocSpecValue : switch ( bcon_token ( s ) ) { case Token_Typespec : typespec = s ; state = State_DocValue ; break ; case Token_OpenBrace : bson_append_start_object ( b , key ) ; DOC_PUSH_STATE ( State_Element ) ; state = State_Element ; break ; case Token_OpenBracket : bson_append_start_array ( b , key ) ; ARRAY_PUSH_RESET_INDEX_STATE ( State_Element ) ; state = State_ArraySpecValue ; break ; case Token_End : end_of_data = 1 ; break ; default : ret = bson_bcon_key_value ( b , key , typespec , bci ) ; state = State_Element ; break ; } break ; case State_DocValue : ret = bson_bcon_key_value ( b , key , typespec , bci ) ; state = State_Element ; typespec = 0 ; break ; case State_ArraySpecValue : switch ( bcon_token ( s ) ) { case Token_Typespec : typespec = s ; state = State_ArrayValue ; break ; case Token_OpenBrace : key = ARRAY_KEY_STRING ( array_index ++ ) ; bson_append_start_object ( b , key ) ; DOC_PUSH_STATE ( State_ArraySpecValue ) ; state = State_Element ; break ; case Token_OpenBracket : key = ARRAY_KEY_STRING ( array_index ++ ) ; bson_append_start_array ( b , key ) ; ARRAY_PUSH_RESET_INDEX_STATE ( State_ArraySpecValue ) ; break ; case Token_CloseBracket : bson_append_finish_array ( b ) ; ARRAY_POP_INDEX_STATE ; break ; case Token_End : end_of_data = 1 ; break ; default : key = ARRAY_KEY_STRING ( array_index ++ ) ; ret = bson_bcon_key_value ( b , key , typespec , bci ) ; break ; } break ; case State_ArrayValue : key = ARRAY_KEY_STRING ( array_index ++ ) ; ret = bson_bcon_key_value ( b , key , typespec , bci ) ; state = State_ArraySpecValue ; typespec = 0 ; break ; default : assert ( NOT_REACHED ) ; break ; } } return state == start_state ? BCON_OK : BCON_DOCUMENT_INCOMPLETE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; size_t <S2SV_ModEnd> array_index_stack [ ARRAY_INDEX_STACK_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 int ssl_init ( void ) { # if OPENSSL_VERSION_NUMBER >= 0x10100000L OPENSSL_init_ssl ( OPENSSL_INIT_LOAD_SSL_STRINGS | OPENSSL_INIT_LOAD_CRYPTO_STRINGS | OPENSSL_INIT_LOAD_CONFIG , NULL ) ; # else OPENSSL_config ( NULL ) ; SSL_load_error_strings ( ) ; SSL_library_init ( ) ; # endif index_ssl_cli = SSL_get_ex_new_index ( 0 , \"CLI<S2SV_blank>pointer\" , NULL , NULL , NULL ) ; index_ssl_ctx_opt = SSL_CTX_get_ex_new_index ( 0 , \"SERVICE_OPTIONS<S2SV_blank>pointer\" , NULL , NULL , NULL ) ; index_session_authenticated = SSL_SESSION_get_ex_new_index ( 0 , <S2SV_StartBug> \"session<S2SV_blank>authenticated\" , NULL , NULL , NULL ) ; <S2SV_EndBug> index_session_connect_address = SSL_SESSION_get_ex_new_index ( 0 , \"session<S2SV_blank>connect<S2SV_blank>address\" , NULL , cb_dup_addr , cb_free_addr ) ; if ( index_ssl_cli < 0 || index_ssl_ctx_opt < 0 || index_session_authenticated < 0 || index_session_connect_address < 0 ) { s_log ( LOG_ERR , \"Application<S2SV_blank>specific<S2SV_blank>data<S2SV_blank>initialization<S2SV_blank>failed\" ) ; return 1 ; } # ifndef OPENSSL_NO_ENGINE ENGINE_load_builtin_engines ( ) ; # endif # ifndef OPENSSL_NO_DH dh_params = get_dh2048 ( ) ; if ( ! dh_params ) { s_log ( LOG_ERR , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>default<S2SV_blank>DH<S2SV_blank>parameters\" ) ; return 1 ; } # endif return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , \"session<S2SV_blank>authenticated\" , cb_new_auth <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13223\n\n```\nCWE-617 static __forceinline void draw_line ( float * output , int x0 , int y0 , int x1 , int y1 , int n ) { int dy = y1 - y0 ; int adx = x1 - x0 ; int ady = abs ( dy ) ; int base ; int x = x0 , y = y0 ; int err = 0 ; int sy ; # ifdef STB_VORBIS_DIVIDE_TABLE if ( adx < DIVTAB_DENOM && ady < DIVTAB_NUMER ) { if ( dy < 0 ) { base = - integer_divide_table [ ady ] [ adx ] ; sy = base - 1 ; } else { base = integer_divide_table [ ady ] [ adx ] ; sy = base + 1 ; } } else { base = dy / adx ; if ( dy < 0 ) sy = base - 1 ; else sy = base + 1 ; } # else base = dy / adx ; if ( dy < 0 ) sy = base - 1 ; else sy = base + 1 ; # endif ady -= abs ( base ) * adx ; if ( x1 > n ) x1 = n ; if ( x < x1 ) { <S2SV_StartBug> LINE_OP ( output [ x ] , inverse_db_table [ y ] ) ; <S2SV_EndBug> for ( ++ x ; x < x1 ; ++ x ) { err += ady ; if ( err >= adx ) { err -= adx ; y += sy ; } else y += base ; <S2SV_StartBug> LINE_OP ( output [ x ] , inverse_db_table [ y ] ) ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inverse_db_table [ y & 255 <S2SV_ModStart> inverse_db_table [ y & 255\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static MB_PREDICTION_MODE read_inter_mode ( VP9_COMMON * cm , vp9_reader * r , <S2SV_EndBug> int ctx ) { <S2SV_StartBug> const int mode = vp9_read_tree ( r , vp9_inter_mode_tree , <S2SV_EndBug> <S2SV_StartBug> cm -> fc . inter_mode_probs [ ctx ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! cm -> frame_parallel_decoding_mode ) <S2SV_EndBug> ++ cm -> counts . inter_mode [ ctx ] [ mode ] ; return NEARESTMV + mode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static PREDICTION_MODE <S2SV_ModEnd> read_inter_mode ( VP9_COMMON <S2SV_ModStart> * cm , MACROBLOCKD * xd , vpx_reader <S2SV_ModEnd> * r , <S2SV_ModStart> int mode = vpx_read_tree <S2SV_ModEnd> ( r , <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> inter_mode_probs [ ctx <S2SV_ModStart> ] ) ; FRAME_COUNTS * counts = xd -> counts ; if ( counts ) ++ counts -> <S2SV_ModEnd> inter_mode [ ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4655\n\n```\nCWE-189 static int snd_ctl_elem_add ( struct snd_ctl_file * file , struct snd_ctl_elem_info * info , int replace ) { struct snd_card * card = file -> card ; struct snd_kcontrol kctl , * _kctl ; unsigned int access ; long private_size ; struct user_element * ue ; int idx , err ; <S2SV_StartBug> if ( ! replace && card -> user_ctl_count >= MAX_USER_CONTROLS ) <S2SV_EndBug> <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> if ( info -> count < 1 ) return - EINVAL ; access = info -> access == 0 ? SNDRV_CTL_ELEM_ACCESS_READWRITE : ( info -> access & ( SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE | SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE ) ) ; info -> id . numid = 0 ; memset ( & kctl , 0 , sizeof ( kctl ) ) ; down_write ( & card -> controls_rwsem ) ; _kctl = snd_ctl_find_id ( card , & info -> id ) ; err = 0 ; if ( _kctl ) { if ( replace ) err = snd_ctl_remove ( card , _kctl ) ; else err = - EBUSY ; } else { if ( replace ) err = - ENOENT ; } up_write ( & card -> controls_rwsem ) ; if ( err < 0 ) return err ; memcpy ( & kctl . id , & info -> id , sizeof ( info -> id ) ) ; kctl . count = info -> owner ? info -> owner : 1 ; access |= SNDRV_CTL_ELEM_ACCESS_USER ; if ( info -> type == SNDRV_CTL_ELEM_TYPE_ENUMERATED ) kctl . info = snd_ctl_elem_user_enum_info ; else kctl . info = snd_ctl_elem_user_info ; if ( access & SNDRV_CTL_ELEM_ACCESS_READ ) kctl . get = snd_ctl_elem_user_get ; if ( access & SNDRV_CTL_ELEM_ACCESS_WRITE ) kctl . put = snd_ctl_elem_user_put ; if ( access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE ) { kctl . tlv . c = snd_ctl_elem_user_tlv ; access |= SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK ; } switch ( info -> type ) { case SNDRV_CTL_ELEM_TYPE_BOOLEAN : case SNDRV_CTL_ELEM_TYPE_INTEGER : private_size = sizeof ( long ) ; if ( info -> count > 128 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_INTEGER64 : private_size = sizeof ( long long ) ; if ( info -> count > 64 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_ENUMERATED : private_size = sizeof ( unsigned int ) ; if ( info -> count > 128 || info -> value . enumerated . items == 0 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_BYTES : private_size = sizeof ( unsigned char ) ; if ( info -> count > 512 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_IEC958 : private_size = sizeof ( struct snd_aes_iec958 ) ; if ( info -> count != 1 ) return - EINVAL ; break ; default : return - EINVAL ; } private_size *= info -> count ; ue = kzalloc ( sizeof ( struct user_element ) + private_size , GFP_KERNEL ) ; if ( ue == NULL ) return - ENOMEM ; ue -> card = card ; ue -> info = * info ; ue -> info . access = 0 ; ue -> elem_data = ( char * ) ue + sizeof ( * ue ) ; ue -> elem_data_size = private_size ; if ( ue -> info . type == SNDRV_CTL_ELEM_TYPE_ENUMERATED ) { err = snd_ctl_elem_init_enum_names ( ue ) ; if ( err < 0 ) { kfree ( ue ) ; return err ; } } kctl . private_free = snd_ctl_elem_user_free ; _kctl = snd_ctl_new ( & kctl , access ) ; if ( _kctl == NULL ) { kfree ( ue -> priv_data ) ; kfree ( ue ) ; return - ENOMEM ; } _kctl -> private_data = ue ; for ( idx = 0 ; idx < _kctl -> count ; idx ++ ) _kctl -> vd [ idx ] . owner = file ; err = snd_ctl_add ( card , _kctl ) ; if ( err < 0 ) return err ; down_write ( & card -> controls_rwsem ) ; card -> user_ctl_count ++ ; up_write ( & card -> controls_rwsem ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( info -> count < 1 ) return - EINVAL ; access = info -> access == 0 ? SNDRV_CTL_ELEM_ACCESS_READWRITE : ( info -> access & ( SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE | SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE ) ) ; info -> id . numid = 0 ; memset ( & kctl , 0 , sizeof ( kctl ) ) ; if ( replace ) { err = snd_ctl_remove_user_ctl ( file , & info -> id ) ; if ( err ) return err ; } if ( <S2SV_ModEnd> card -> user_ctl_count <S2SV_ModStart> return - ENOMEM <S2SV_ModEnd> ; memcpy (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void optimize_b ( int plane , int block , BLOCK_SIZE plane_bsize , <S2SV_EndBug> <S2SV_StartBug> TX_SIZE tx_size , MACROBLOCK * mb , <S2SV_EndBug> ENTROPY_CONTEXT * a , ENTROPY_CONTEXT * l ) { MACROBLOCKD * const xd = & mb -> e_mbd ; <S2SV_StartBug> struct macroblock_plane * p = & mb -> plane [ plane ] ; <S2SV_EndBug> <S2SV_StartBug> struct macroblockd_plane * pd = & xd -> plane [ plane ] ; <S2SV_EndBug> const int ref = is_inter_block ( & xd -> mi [ 0 ] -> mbmi ) ; vp9_token_state tokens [ 1025 ] [ 2 ] ; unsigned best_index [ 1025 ] [ 2 ] ; <S2SV_StartBug> const int16_t * coeff = BLOCK_OFFSET ( mb -> plane [ plane ] . coeff , block ) ; <S2SV_EndBug> <S2SV_StartBug> int16_t * qcoeff = BLOCK_OFFSET ( p -> qcoeff , block ) ; <S2SV_EndBug> <S2SV_StartBug> int16_t * dqcoeff = BLOCK_OFFSET ( pd -> dqcoeff , block ) ; <S2SV_EndBug> <S2SV_StartBug> int eob = p -> eobs [ block ] , final_eob , sz = 0 ; <S2SV_EndBug> const int i0 = 0 ; int rc , x , next , i ; int64_t rdmult , rddiv , rd_cost0 , rd_cost1 ; int rate0 , rate1 , error0 , error1 , t0 , t1 ; int best , band , pt ; <S2SV_StartBug> PLANE_TYPE type = pd -> plane_type ; <S2SV_EndBug> int err_mult = plane_rd_mult [ type ] ; const int default_eob = 16 << ( tx_size << 1 ) ; const int mul = 1 + ( tx_size == TX_32X32 ) ; <S2SV_StartBug> uint8_t token_cache [ 1024 ] ; <S2SV_EndBug> <S2SV_StartBug> const int16_t * dequant_ptr = pd -> dequant ; <S2SV_EndBug> const uint8_t * const band_translate = get_band_translate ( tx_size ) ; const scan_order * so = get_scan ( xd , tx_size , type , block ) ; <S2SV_StartBug> const int16_t * scan = so -> scan ; <S2SV_EndBug> const int16_t * nb = so -> neighbors ; assert ( ( ! type && ! plane ) || ( type && plane ) ) ; assert ( eob <= default_eob ) ; <S2SV_StartBug> rdmult = mb -> rdmult * err_mult ; <S2SV_EndBug> <S2SV_StartBug> if ( ! is_inter_block ( & mb -> e_mbd . mi [ 0 ] -> mbmi ) ) <S2SV_EndBug> rdmult = ( rdmult * 9 ) >> 4 ; <S2SV_StartBug> rddiv = mb -> rddiv ; <S2SV_EndBug> tokens [ eob ] [ 0 ] . rate = 0 ; tokens [ eob ] [ 0 ] . error = 0 ; tokens [ eob ] [ 0 ] . next = default_eob ; tokens [ eob ] [ 0 ] . token = EOB_TOKEN ; tokens [ eob ] [ 0 ] . qc = 0 ; <S2SV_StartBug> * ( tokens [ eob ] + 1 ) = * ( tokens [ eob ] + 0 ) ; <S2SV_EndBug> next = eob ; for ( i = 0 ; i < eob ; i ++ ) <S2SV_StartBug> token_cache [ scan [ i ] ] = vp9_pt_energy_class [ vp9_dct_value_tokens_ptr [ <S2SV_EndBug> <S2SV_StartBug> qcoeff [ scan [ i ] ] ] . token ] ; <S2SV_EndBug> <S2SV_StartBug> for ( i = eob ; i -- > i0 ; ) { <S2SV_EndBug> int base_bits , d2 , dx ; <S2SV_StartBug> rc = scan [ i ] ; <S2SV_EndBug> <S2SV_StartBug> x = qcoeff [ rc ] ; <S2SV_EndBug> if ( x ) { int shortcut = 0 ; error0 = tokens [ next ] [ 0 ] . error ; error1 = tokens [ next ] [ 1 ] . error ; rate0 = tokens [ next ] [ 0 ] . rate ; rate1 = tokens [ next ] [ 1 ] . rate ; <S2SV_StartBug> t0 = ( vp9_dct_value_tokens_ptr + x ) -> token ; <S2SV_EndBug> if ( next < default_eob ) { band = band_translate [ i + 1 ] ; pt = trellis_get_coeff_context ( scan , nb , i , t0 , token_cache ) ; rate0 += mb -> token_costs [ tx_size ] [ type ] [ ref ] [ band ] [ 0 ] [ pt ] [ tokens [ next ] [ 0 ] . token ] ; rate1 += mb -> token_costs [ tx_size ] [ type ] [ ref ] [ band ] [ 0 ] [ pt ] [ tokens [ next ] [ 1 ] . token ] ; } UPDATE_RD_COST ( ) ; best = rd_cost1 < rd_cost0 ; <S2SV_StartBug> base_bits = * ( vp9_dct_value_cost_ptr + x ) ; <S2SV_EndBug> <S2SV_StartBug> dx = mul * ( dqcoeff [ rc ] - coeff [ rc ] ) ; <S2SV_EndBug> d2 = dx * dx ; tokens [ i ] [ 0 ] . rate = base_bits + ( best ? rate1 : rate0 ) ; tokens [ i ] [ 0 ] . error = d2 + ( best ? error1 : error0 ) ; tokens [ i ] [ 0 ] . next = next ; tokens [ i ] [ 0 ] . token = t0 ; tokens [ i ] [ 0 ] . qc = x ; best_index [ i ] [ 0 ] = best ; rate0 = tokens [ next ] [ 0 ] . rate ; rate1 = tokens [ next ] [ 1 ] . rate ; if ( ( abs ( x ) * dequant_ptr [ rc != 0 ] > abs ( coeff [ rc ] ) * mul ) && ( abs ( x ) * dequant_ptr [ rc != 0 ] < abs ( coeff [ rc ] ) * mul + dequant_ptr [ rc != 0 ] ) ) shortcut = 1 ; else shortcut = 0 ; if ( shortcut ) { sz = - ( x < 0 ) ; x -= 2 * sz + 1 ; } if ( ! x ) { t0 = tokens [ next ] [ 0 ] . token == EOB_TOKEN ? EOB_TOKEN : ZERO_TOKEN ; t1 = tokens [ next ] [ 1 ] . token == EOB_TOKEN ? EOB_TOKEN : ZERO_TOKEN ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> t0 = t1 = ( vp9_dct_value_tokens_ptr + x ) -> token ; <S2SV_EndBug> } if ( next < default_eob ) { band = band_translate [ i + 1 ] ; if ( t0 != EOB_TOKEN ) { pt = trellis_get_coeff_context ( scan , nb , i , t0 , token_cache ) ; rate0 += mb -> token_costs [ tx_size ] [ type ] [ ref ] [ band ] [ ! x ] [ pt ] [ tokens [ next ] [ 0 ] . token ] ; } if ( t1 != EOB_TOKEN ) { pt = trellis_get_coeff_context ( scan , nb , i , t1 , token_cache ) ; rate1 += mb -> token_costs [ tx_size ] [ type ] [ ref ] [ band ] [ ! x ] [ pt ] [ tokens [ next ] [ 1 ] . token ] ; } } UPDATE_RD_COST ( ) ; best = rd_cost1 < rd_cost0 ; <S2SV_StartBug> base_bits = * ( vp9_dct_value_cost_ptr + x ) ; <S2SV_EndBug> <S2SV_StartBug> if ( shortcut ) { <S2SV_EndBug> <S2SV_StartBug> dx -= ( dequant_ptr [ rc != 0 ] + sz ) ^ sz ; <S2SV_EndBug> d2 = dx * dx ; } tokens [ i ] [ 1 ] . rate = base_bits + ( best ? rate1 : rate0 ) ; tokens [ i ] [ 1 ] . error = d2 + ( best ? error1 : error0 ) ; tokens [ i ] [ 1 ] . next = next ; tokens [ i ] [ 1 ] . token = best ? t1 : t0 ; tokens [ i ] [ 1 ] . qc = x ; best_index [ i ] [ 1 ] = best ; next = i ; } else { band = band_translate [ i + 1 ] ; t0 = tokens [ next ] [ 0 ] . token ; t1 = tokens [ next ] [ 1 ] . token ; if ( t0 != EOB_TOKEN ) { tokens [ next ] [ 0 ] . rate += mb -> token_costs [ tx_size ] [ type ] [ ref ] [ band ] [ 1 ] [ 0 ] [ t0 ] ; tokens [ next ] [ 0 ] . token = ZERO_TOKEN ; } if ( t1 != EOB_TOKEN ) { tokens [ next ] [ 1 ] . rate += mb -> token_costs [ tx_size ] [ type ] [ ref ] [ band ] [ 1 ] [ 0 ] [ t1 ] ; tokens [ next ] [ 1 ] . token = ZERO_TOKEN ; } best_index [ i ] [ 0 ] = best_index [ i ] [ 1 ] = 0 ; } } band = band_translate [ i + 1 ] ; <S2SV_StartBug> pt = combine_entropy_contexts ( * a , * l ) ; <S2SV_EndBug> rate0 = tokens [ next ] [ 0 ] . rate ; rate1 = tokens [ next ] [ 1 ] . rate ; error0 = tokens [ next ] [ 0 ] . error ; error1 = tokens [ next ] [ 1 ] . error ; t0 = tokens [ next ] [ 0 ] . token ; t1 = tokens [ next ] [ 1 ] . token ; <S2SV_StartBug> rate0 += mb -> token_costs [ tx_size ] [ type ] [ ref ] [ band ] [ 0 ] [ pt ] [ t0 ] ; <S2SV_EndBug> <S2SV_StartBug> rate1 += mb -> token_costs [ tx_size ] [ type ] [ ref ] [ band ] [ 0 ] [ pt ] [ t1 ] ; <S2SV_EndBug> UPDATE_RD_COST ( ) ; best = rd_cost1 < rd_cost0 ; <S2SV_StartBug> final_eob = i0 - 1 ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( qcoeff , 0 , sizeof ( * qcoeff ) * ( 16 << ( tx_size * 2 ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( dqcoeff , 0 , sizeof ( * dqcoeff ) * ( 16 << ( tx_size * 2 ) ) ) ; <S2SV_EndBug> for ( i = next ; i < eob ; i = next ) { <S2SV_StartBug> x = tokens [ i ] [ best ] . qc ; <S2SV_EndBug> <S2SV_StartBug> if ( x ) { <S2SV_EndBug> final_eob = i ; } <S2SV_StartBug> rc = scan [ i ] ; <S2SV_EndBug> qcoeff [ rc ] = x ; dqcoeff [ rc ] = ( x * dequant_ptr [ rc != 0 ] ) / mul ; next = tokens [ i ] [ best ] . next ; best = best_index [ i ] [ best ] ; } final_eob ++ ; mb -> plane [ plane ] . eobs [ block ] = final_eob ; <S2SV_StartBug> * a = * l = ( final_eob > 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int optimize_b ( MACROBLOCK * mb , <S2SV_ModEnd> int plane , <S2SV_ModStart> int block , <S2SV_ModEnd> TX_SIZE tx_size , <S2SV_ModStart> TX_SIZE tx_size , int ctx <S2SV_ModEnd> ) { MACROBLOCKD <S2SV_ModStart> struct macroblock_plane * const <S2SV_ModStart> struct macroblockd_plane * const <S2SV_ModStart> 2 ] ; uint8_t token_cache [ 1024 ] ; const tran_low_t * const <S2SV_ModEnd> coeff = BLOCK_OFFSET <S2SV_ModStart> block ) ; tran_low_t * const <S2SV_ModEnd> qcoeff = BLOCK_OFFSET <S2SV_ModStart> block ) ; tran_low_t * const <S2SV_ModEnd> dqcoeff = BLOCK_OFFSET <S2SV_ModStart> block ) ; const <S2SV_ModStart> [ block ] ; const <S2SV_ModEnd> PLANE_TYPE type = <S2SV_ModStart> pd -> plane_type <S2SV_ModEnd> ; const int <S2SV_ModStart> TX_32X32 ) ; const int16_t * dequant_ptr = pd -> dequant ; const uint8_t * const band_translate = get_band_translate ( tx_size ) ; const scan_order * const so = get_scan ( xd , tx_size , type , block ) <S2SV_ModEnd> ; const int16_t <S2SV_ModStart> const int16_t * const scan = so -> scan ; const int16_t * const nb = so -> neighbors ; int next = eob , sz = 0 ; int64_t rdmult = mb -> rdmult * plane_rd_mult [ type ] , rddiv = mb -> rddiv ; int64_t rd_cost0 , rd_cost1 ; int rate0 , rate1 , error0 , error1 ; int16_t t0 , t1 ; EXTRABIT e0 ; int best , band , pt , i , final_eob ; # if CONFIG_VP9_HIGHBITDEPTH const int16_t * cat6_high_cost = vp9_get_high_cost_table ( xd -> bd ) ; # else <S2SV_ModEnd> const int16_t * <S2SV_ModStart> const int16_t * cat6_high_cost = vp9_get_high_cost_table ( 8 ) ; # endif <S2SV_ModEnd> assert ( ( <S2SV_ModStart> default_eob ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! ref <S2SV_ModEnd> ) rdmult = <S2SV_ModStart> >> 4 ; <S2SV_ModEnd> tokens [ eob <S2SV_ModStart> = 0 ; <S2SV_ModEnd> tokens [ eob <S2SV_ModStart> [ eob ] [ 1 ] = <S2SV_ModEnd> tokens [ eob <S2SV_ModStart> [ eob ] [ 0 ] <S2SV_ModEnd> ; for ( <S2SV_ModStart> = vp9_pt_energy_class [ vp9_get_token ( <S2SV_ModEnd> qcoeff [ scan <S2SV_ModStart> i ] ] ) <S2SV_ModEnd> ] ; for <S2SV_ModStart> i -- > 0 <S2SV_ModEnd> ; ) { <S2SV_ModStart> , dx ; const int <S2SV_ModStart> i ] ; int <S2SV_ModStart> . rate ; vp9_get_token_extra ( x , & t0 , & e0 ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; base_bits = vp9_get_cost ( t0 , e0 , cat6_high_cost <S2SV_ModEnd> ) ; dx <S2SV_ModStart> ] ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { dx >>= xd -> bd - 8 ; } # endif <S2SV_ModStart> : ZERO_TOKEN ; e0 = 0 ; <S2SV_ModStart> } else { vp9_get_token_extra ( x , & t0 , & e0 ) ; t1 = t0 <S2SV_ModEnd> ; } if <S2SV_ModStart> ; base_bits = vp9_get_cost ( t0 , e0 , cat6_high_cost <S2SV_ModEnd> ) ; if <S2SV_ModStart> if ( shortcut ) { # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH <S2SV_ModStart> dx -= ( ( <S2SV_ModStart> != 0 ] >> ( xd -> bd - 8 ) ) <S2SV_ModStart> ^ sz ; } else { dx -= ( dequant_ptr [ rc != 0 ] + sz ) ^ sz ; } # else dx -= ( dequant_ptr [ rc != 0 ] + sz ) ^ sz ; # endif <S2SV_ModStart> 1 ] ; <S2SV_ModEnd> rate0 = tokens <S2SV_ModStart> 0 ] [ ctx <S2SV_ModEnd> ] [ t0 <S2SV_ModStart> 0 ] [ ctx <S2SV_ModEnd> ] [ t1 <S2SV_ModStart> ; final_eob = <S2SV_ModEnd> - 1 ; <S2SV_ModStart> - 1 ; memset <S2SV_ModEnd> ( qcoeff , <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( dqcoeff , <S2SV_ModStart> next ) { const int <S2SV_ModStart> . qc ; const int rc = scan [ i ] ; <S2SV_ModStart> i ; } <S2SV_ModEnd> qcoeff [ rc <S2SV_ModStart> = final_eob ; return final_eob <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int vp9_decode_block_tokens ( VP9_COMMON * cm , MACROBLOCKD * xd , <S2SV_EndBug> <S2SV_StartBug> int plane , int block , BLOCK_SIZE plane_bsize , <S2SV_EndBug> <S2SV_StartBug> int x , int y , TX_SIZE tx_size , vp9_reader * r ) { <S2SV_EndBug> <S2SV_StartBug> struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; <S2SV_EndBug> const int ctx = get_entropy_context ( tx_size , pd -> above_context + x , pd -> left_context + y ) ; <S2SV_StartBug> const scan_order * so = get_scan ( xd , tx_size , pd -> plane_type , block ) ; <S2SV_EndBug> <S2SV_StartBug> const int eob = decode_coefs ( cm , xd , pd -> plane_type , <S2SV_EndBug> <S2SV_StartBug> BLOCK_OFFSET ( pd -> dqcoeff , block ) , tx_size , <S2SV_EndBug> <S2SV_StartBug> pd -> dequant , ctx , so -> scan , so -> neighbors , r ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_set_contexts ( xd , pd , plane_bsize , tx_size , eob > 0 , x , y ) ; <S2SV_EndBug> return eob ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int vp9_decode_block_tokens ( <S2SV_ModEnd> MACROBLOCKD * xd <S2SV_ModStart> int plane , const scan_order * sc <S2SV_ModEnd> , int x <S2SV_ModStart> TX_SIZE tx_size , vpx_reader * r , int seg_id <S2SV_ModEnd> ) { struct <S2SV_ModStart> plane [ plane ] ; const int16_t * const dequant = pd -> seg_dequant [ seg_id <S2SV_ModStart> ) ; const <S2SV_ModEnd> int eob = <S2SV_ModStart> = decode_coefs ( <S2SV_ModEnd> xd , pd <S2SV_ModStart> -> plane_type , <S2SV_ModEnd> pd -> dqcoeff <S2SV_ModStart> -> dqcoeff , tx_size , <S2SV_ModEnd> dequant , ctx <S2SV_ModStart> , ctx , sc <S2SV_ModEnd> -> scan , <S2SV_ModStart> -> scan , sc <S2SV_ModEnd> -> neighbors , <S2SV_ModStart> r ) ; dec_set_contexts <S2SV_ModEnd> ( xd , <S2SV_ModStart> xd , pd <S2SV_ModEnd> , tx_size ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static int cJSON_strcasecmp ( const char * s1 , const char * s2 ) { if ( ! s1 ) return ( s1 == s2 ) ? 0 : 1 ; if ( ! s2 ) return 1 ; for ( ; tolower ( * s1 ) == tolower ( * s2 ) ; ++ s1 , ++ s2 ) if ( * s1 == 0 ) return 0 ; return tolower ( * ( const unsigned char * ) s1 ) - tolower ( * ( const unsigned char * ) s2 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6401\n\n```\nCWE-310 static void my_free ( void * ptr ) { <S2SV_StartBug> free_called += 1 ; <S2SV_EndBug> free ( ptr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { free_called = <S2SV_ModEnd> 1 ; free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2002-2443\n\n```\nCWE-20 static krb5_error_code process_chpw_request ( krb5_context context , void * server_handle , char * realm , krb5_keytab keytab , const krb5_fulladdr * local_faddr , const krb5_fulladdr * remote_faddr , krb5_data * req , krb5_data * rep ) { krb5_error_code ret ; char * ptr ; unsigned int plen , vno ; krb5_data ap_req , ap_rep = empty_data ( ) ; krb5_data cipher = empty_data ( ) , clear = empty_data ( ) ; krb5_auth_context auth_context = NULL ; krb5_principal changepw = NULL ; krb5_principal client , target = NULL ; krb5_ticket * ticket = NULL ; krb5_replay_data replay ; krb5_error krberror ; int numresult ; char strresult [ 1024 ] ; char * clientstr = NULL , * targetstr = NULL ; const char * errmsg = NULL ; size_t clen ; char * cdots ; struct sockaddr_storage ss ; socklen_t salen ; char addrbuf [ 100 ] ; krb5_address * addr = remote_faddr -> address ; * rep = empty_data ( ) ; if ( req -> length < 4 ) { ret = KRB5KRB_AP_ERR_MODIFIED ; numresult = KRB5_KPASSWD_MALFORMED ; strlcpy ( strresult , \"Request<S2SV_blank>was<S2SV_blank>truncated\" , sizeof ( strresult ) ) ; <S2SV_StartBug> goto chpwfail ; <S2SV_EndBug> } ptr = req -> data ; plen = ( * ptr ++ & 0xff ) ; plen = ( plen << 8 ) | ( * ptr ++ & 0xff ) ; if ( plen != req -> length ) { ret = KRB5KRB_AP_ERR_MODIFIED ; numresult = KRB5_KPASSWD_MALFORMED ; strlcpy ( strresult , \"Request<S2SV_blank>length<S2SV_blank>was<S2SV_blank>inconsistent\" , sizeof ( strresult ) ) ; <S2SV_StartBug> goto chpwfail ; <S2SV_EndBug> } vno = ( * ptr ++ & 0xff ) ; vno = ( vno << 8 ) | ( * ptr ++ & 0xff ) ; if ( vno != 1 && vno != RFC3244_VERSION ) { ret = KRB5KDC_ERR_BAD_PVNO ; numresult = KRB5_KPASSWD_BAD_VERSION ; snprintf ( strresult , sizeof ( strresult ) , \"Request<S2SV_blank>contained<S2SV_blank>unknown<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>number<S2SV_blank>%d\" , vno ) ; <S2SV_StartBug> goto chpwfail ; <S2SV_EndBug> } ap_req . length = ( * ptr ++ & 0xff ) ; ap_req . length = ( ap_req . length << 8 ) | ( * ptr ++ & 0xff ) ; if ( ptr + ap_req . length >= req -> data + req -> length ) { ret = KRB5KRB_AP_ERR_MODIFIED ; numresult = KRB5_KPASSWD_MALFORMED ; strlcpy ( strresult , \"Request<S2SV_blank>was<S2SV_blank>truncated<S2SV_blank>in<S2SV_blank>AP-REQ\" , sizeof ( strresult ) ) ; <S2SV_StartBug> goto chpwfail ; <S2SV_EndBug> } ap_req . data = ptr ; ptr += ap_req . length ; ret = krb5_auth_con_init ( context , & auth_context ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>initializing<S2SV_blank>auth<S2SV_blank>context\" , sizeof ( strresult ) ) ; goto chpwfail ; } ret = krb5_auth_con_setflags ( context , auth_context , KRB5_AUTH_CONTEXT_DO_SEQUENCE ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>initializing<S2SV_blank>auth<S2SV_blank>context\" , sizeof ( strresult ) ) ; goto chpwfail ; } ret = krb5_build_principal ( context , & changepw , strlen ( realm ) , realm , \"kadmin\" , \"changepw\" , NULL ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>building<S2SV_blank>kadmin/changepw<S2SV_blank>principal\" , sizeof ( strresult ) ) ; goto chpwfail ; } ret = krb5_rd_req ( context , & auth_context , & ap_req , changepw , keytab , NULL , & ticket ) ; if ( ret ) { numresult = KRB5_KPASSWD_AUTHERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>reading<S2SV_blank>application<S2SV_blank>request\" , sizeof ( strresult ) ) ; goto chpwfail ; } ret = krb5_mk_rep ( context , auth_context , & ap_rep ) ; if ( ret ) { numresult = KRB5_KPASSWD_AUTHERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>replying<S2SV_blank>to<S2SV_blank>application<S2SV_blank>request\" , sizeof ( strresult ) ) ; goto chpwfail ; } cipher . length = ( req -> data + req -> length ) - ptr ; cipher . data = ptr ; ret = krb5_rd_priv ( context , auth_context , & cipher , & clear , & replay ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>decrypting<S2SV_blank>request\" , sizeof ( strresult ) ) ; goto chpwfail ; } client = ticket -> enc_part2 -> client ; if ( vno == RFC3244_VERSION ) { krb5_data * clear_data ; ret = decode_krb5_setpw_req ( & clear , & clear_data , & target ) ; if ( ret != 0 ) { numresult = KRB5_KPASSWD_MALFORMED ; strlcpy ( strresult , \"Failed<S2SV_blank>decoding<S2SV_blank>ChangePasswdData\" , sizeof ( strresult ) ) ; goto chpwfail ; } zapfree ( clear . data , clear . length ) ; clear = * clear_data ; free ( clear_data ) ; if ( target != NULL ) { ret = krb5_unparse_name ( context , target , & targetstr ) ; if ( ret != 0 ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>unparsing<S2SV_blank>target<S2SV_blank>name<S2SV_blank>for<S2SV_blank>log\" , sizeof ( strresult ) ) ; goto chpwfail ; } } } ret = krb5_unparse_name ( context , client , & clientstr ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>unparsing<S2SV_blank>client<S2SV_blank>name<S2SV_blank>for<S2SV_blank>log\" , sizeof ( strresult ) ) ; goto chpwfail ; } if ( vno == 1 && ( ticket -> enc_part2 -> flags & TKT_FLG_INITIAL ) == 0 ) { numresult = KRB5_KPASSWD_INITIAL_FLAG_NEEDED ; strlcpy ( strresult , \"Ticket<S2SV_blank>must<S2SV_blank>be<S2SV_blank>derived<S2SV_blank>from<S2SV_blank>a<S2SV_blank>password\" , sizeof ( strresult ) ) ; goto chpwfail ; } ptr = k5memdup0 ( clear . data , clear . length , & ret ) ; ret = schpw_util_wrapper ( server_handle , client , target , ( ticket -> enc_part2 -> flags & TKT_FLG_INITIAL ) != 0 , ptr , NULL , strresult , sizeof ( strresult ) ) ; if ( ret ) errmsg = krb5_get_error_message ( context , ret ) ; zapfree ( clear . data , clear . length ) ; zapfree ( ptr , clear . length ) ; clear = empty_data ( ) ; clen = strlen ( clientstr ) ; trunc_name ( & clen , & cdots ) ; switch ( addr -> addrtype ) { case ADDRTYPE_INET : { struct sockaddr_in * sin = ss2sin ( & ss ) ; sin -> sin_family = AF_INET ; memcpy ( & sin -> sin_addr , addr -> contents , addr -> length ) ; sin -> sin_port = htons ( remote_faddr -> port ) ; salen = sizeof ( * sin ) ; break ; } case ADDRTYPE_INET6 : { struct sockaddr_in6 * sin6 = ss2sin6 ( & ss ) ; sin6 -> sin6_family = AF_INET6 ; memcpy ( & sin6 -> sin6_addr , addr -> contents , addr -> length ) ; sin6 -> sin6_port = htons ( remote_faddr -> port ) ; salen = sizeof ( * sin6 ) ; break ; } default : { struct sockaddr * sa = ss2sa ( & ss ) ; sa -> sa_family = AF_UNSPEC ; salen = sizeof ( * sa ) ; break ; } } if ( getnameinfo ( ss2sa ( & ss ) , salen , addrbuf , sizeof ( addrbuf ) , NULL , 0 , NI_NUMERICHOST | NI_NUMERICSERV ) != 0 ) strlcpy ( addrbuf , \"<unprintable>\" , sizeof ( addrbuf ) ) ; if ( vno == RFC3244_VERSION ) { size_t tlen ; char * tdots ; const char * targetp ; if ( target == NULL ) { tlen = clen ; tdots = cdots ; targetp = targetstr ; } else { tlen = strlen ( targetstr ) ; trunc_name ( & tlen , & tdots ) ; targetp = clientstr ; } krb5_klog_syslog ( LOG_NOTICE , _ ( \"setpw<S2SV_blank>request<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>by<S2SV_blank>%.*s%s<S2SV_blank>for<S2SV_blank>\" \"%.*s%s:<S2SV_blank>%s\" ) , addrbuf , ( int ) clen , clientstr , cdots , ( int ) tlen , targetp , tdots , errmsg ? errmsg : \"success\" ) ; } else { krb5_klog_syslog ( LOG_NOTICE , _ ( \"chpw<S2SV_blank>request<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>%.*s%s:<S2SV_blank>%s\" ) , addrbuf , ( int ) clen , clientstr , cdots , errmsg ? errmsg : \"success\" ) ; } switch ( ret ) { case KADM5_AUTH_CHANGEPW : numresult = KRB5_KPASSWD_ACCESSDENIED ; break ; case KADM5_PASS_Q_TOOSHORT : case KADM5_PASS_REUSE : case KADM5_PASS_Q_CLASS : case KADM5_PASS_Q_DICT : case KADM5_PASS_Q_GENERIC : case KADM5_PASS_TOOSOON : numresult = KRB5_KPASSWD_SOFTERROR ; break ; case 0 : numresult = KRB5_KPASSWD_SUCCESS ; strlcpy ( strresult , \"\" , sizeof ( strresult ) ) ; break ; default : numresult = KRB5_KPASSWD_HARDERROR ; break ; } chpwfail : clear . length = 2 + strlen ( strresult ) ; clear . data = ( char * ) malloc ( clear . length ) ; ptr = clear . data ; * ptr ++ = ( numresult >> 8 ) & 0xff ; * ptr ++ = numresult & 0xff ; memcpy ( ptr , strresult , strlen ( strresult ) ) ; cipher = empty_data ( ) ; if ( ap_rep . length ) { ret = krb5_auth_con_setaddrs ( context , auth_context , local_faddr -> address , NULL ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>storing<S2SV_blank>client<S2SV_blank>and<S2SV_blank>server<S2SV_blank>internet<S2SV_blank>addresses\" , sizeof ( strresult ) ) ; } else { ret = krb5_mk_priv ( context , auth_context , & clear , & cipher , & replay ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>encrypting<S2SV_blank>reply\" , sizeof ( strresult ) ) ; } } } if ( cipher . length == 0 ) { if ( ap_rep . length ) { free ( ap_rep . data ) ; ap_rep = empty_data ( ) ; } krberror . ctime = 0 ; krberror . cusec = 0 ; krberror . susec = 0 ; ret = krb5_timeofday ( context , & krberror . stime ) ; if ( ret ) goto bailout ; krberror . error = ret ; krberror . error -= ERROR_TABLE_BASE_krb5 ; if ( krberror . error < 0 || krberror . error > 128 ) krberror . error = KRB_ERR_GENERIC ; krberror . client = NULL ; ret = krb5_build_principal ( context , & krberror . server , strlen ( realm ) , realm , \"kadmin\" , \"changepw\" , NULL ) ; if ( ret ) goto bailout ; krberror . text . length = 0 ; krberror . e_data = clear ; ret = krb5_mk_error ( context , & krberror , & cipher ) ; krb5_free_principal ( context , krberror . server ) ; if ( ret ) goto bailout ; } ret = alloc_data ( rep , 6 + ap_rep . length + cipher . length ) ; if ( ret ) goto bailout ; ptr = rep -> data ; * ptr ++ = ( rep -> length >> 8 ) & 0xff ; * ptr ++ = rep -> length & 0xff ; * ptr ++ = 0 ; * ptr ++ = 1 ; * ptr ++ = ( ap_rep . length >> 8 ) & 0xff ; * ptr ++ = ap_rep . length & 0xff ; if ( ap_rep . length ) { memcpy ( ptr , ap_rep . data , ap_rep . length ) ; ptr += ap_rep . length ; } memcpy ( ptr , cipher . data , cipher . length ) ; bailout : krb5_auth_con_free ( context , auth_context ) ; krb5_free_principal ( context , changepw ) ; krb5_free_ticket ( context , ticket ) ; free ( ap_rep . data ) ; free ( clear . data ) ; free ( cipher . data ) ; krb5_free_principal ( context , target ) ; krb5_free_unparsed_name ( context , targetstr ) ; krb5_free_unparsed_name ( context , clientstr ) ; krb5_free_error_message ( context , errmsg ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; goto bailout <S2SV_ModEnd> ; } ptr <S2SV_ModStart> ) ; goto bailout <S2SV_ModEnd> ; } vno <S2SV_ModStart> ) ; goto bailout <S2SV_ModEnd> ; } ap_req <S2SV_ModStart> ) ; goto bailout <S2SV_ModEnd> ; } ap_req\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5400\n\n```\nCWE-119 static int airspy_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct airspy * s ; int ret ; u8 u8tmp , buf [ BUF_SIZE ] ; s = kzalloc ( sizeof ( struct airspy ) , GFP_KERNEL ) ; if ( s == NULL ) { dev_err ( & intf -> dev , \"Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>state\\\\n\" ) ; return - ENOMEM ; } mutex_init ( & s -> v4l2_lock ) ; mutex_init ( & s -> vb_queue_lock ) ; spin_lock_init ( & s -> queued_bufs_lock ) ; INIT_LIST_HEAD ( & s -> queued_bufs ) ; s -> dev = & intf -> dev ; s -> udev = interface_to_usbdev ( intf ) ; s -> f_adc = bands [ 0 ] . rangelow ; s -> f_rf = bands_rf [ 0 ] . rangelow ; s -> pixelformat = formats [ 0 ] . pixelformat ; s -> buffersize = formats [ 0 ] . buffersize ; ret = airspy_ctrl_msg ( s , CMD_BOARD_ID_READ , 0 , 0 , & u8tmp , 1 ) ; if ( ret == 0 ) ret = airspy_ctrl_msg ( s , CMD_VERSION_STRING_READ , 0 , 0 , buf , BUF_SIZE ) ; if ( ret ) { dev_err ( s -> dev , \"Could<S2SV_blank>not<S2SV_blank>detect<S2SV_blank>board\\\\n\" ) ; goto err_free_mem ; } buf [ BUF_SIZE - 1 ] = '\\\\0' ; dev_info ( s -> dev , \"Board<S2SV_blank>ID:<S2SV_blank>%02x\\\\n\" , u8tmp ) ; dev_info ( s -> dev , \"Firmware<S2SV_blank>version:<S2SV_blank>%s\\\\n\" , buf ) ; s -> vb_queue . type = V4L2_BUF_TYPE_SDR_CAPTURE ; s -> vb_queue . io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ ; s -> vb_queue . drv_priv = s ; s -> vb_queue . buf_struct_size = sizeof ( struct airspy_frame_buf ) ; s -> vb_queue . ops = & airspy_vb2_ops ; s -> vb_queue . mem_ops = & vb2_vmalloc_memops ; s -> vb_queue . timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC ; ret = vb2_queue_init ( & s -> vb_queue ) ; if ( ret ) { dev_err ( s -> dev , \"Could<S2SV_blank>not<S2SV_blank>initialize<S2SV_blank>vb2<S2SV_blank>queue\\\\n\" ) ; goto err_free_mem ; } s -> vdev = airspy_template ; s -> vdev . queue = & s -> vb_queue ; s -> vdev . queue -> lock = & s -> vb_queue_lock ; video_set_drvdata ( & s -> vdev , s ) ; s -> v4l2_dev . release = airspy_video_release ; ret = v4l2_device_register ( & intf -> dev , & s -> v4l2_dev ) ; if ( ret ) { dev_err ( s -> dev , \"Failed<S2SV_blank>to<S2SV_blank>register<S2SV_blank>v4l2-device<S2SV_blank>(%d)\\\\n\" , ret ) ; goto err_free_mem ; } v4l2_ctrl_handler_init ( & s -> hdl , 5 ) ; s -> lna_gain_auto = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_LNA_GAIN_AUTO , 0 , 1 , 1 , 0 ) ; s -> lna_gain = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_LNA_GAIN , 0 , 14 , 1 , 8 ) ; v4l2_ctrl_auto_cluster ( 2 , & s -> lna_gain_auto , 0 , false ) ; s -> mixer_gain_auto = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO , 0 , 1 , 1 , 0 ) ; s -> mixer_gain = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_MIXER_GAIN , 0 , 15 , 1 , 8 ) ; v4l2_ctrl_auto_cluster ( 2 , & s -> mixer_gain_auto , 0 , false ) ; s -> if_gain = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_IF_GAIN , 0 , 15 , 1 , 0 ) ; if ( s -> hdl . error ) { ret = s -> hdl . error ; dev_err ( s -> dev , \"Could<S2SV_blank>not<S2SV_blank>initialize<S2SV_blank>controls\\\\n\" ) ; goto err_free_controls ; } v4l2_ctrl_handler_setup ( & s -> hdl ) ; s -> v4l2_dev . ctrl_handler = & s -> hdl ; s -> vdev . v4l2_dev = & s -> v4l2_dev ; s -> vdev . lock = & s -> v4l2_lock ; ret = video_register_device ( & s -> vdev , VFL_TYPE_SDR , - 1 ) ; if ( ret ) { dev_err ( s -> dev , \"Failed<S2SV_blank>to<S2SV_blank>register<S2SV_blank>as<S2SV_blank>video<S2SV_blank>device<S2SV_blank>(%d)\\\\n\" , ret ) ; <S2SV_StartBug> goto err_unregister_v4l2_dev ; <S2SV_EndBug> } dev_info ( s -> dev , \"Registered<S2SV_blank>as<S2SV_blank>%s\\\\n\" , video_device_node_name ( & s -> vdev ) ) ; dev_notice ( s -> dev , \"SDR<S2SV_blank>API<S2SV_blank>is<S2SV_blank>still<S2SV_blank>slightly<S2SV_blank>experimental<S2SV_blank>and<S2SV_blank>functionality<S2SV_blank>changes<S2SV_blank>may<S2SV_blank>follow\\\\n\" ) ; return 0 ; err_free_controls : v4l2_ctrl_handler_free ( & s -> hdl ) ; <S2SV_StartBug> err_unregister_v4l2_dev : <S2SV_EndBug> v4l2_device_unregister ( & s -> v4l2_dev ) ; err_free_mem : kfree ( s ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; goto err_free_controls <S2SV_ModEnd> ; } dev_info <S2SV_ModStart> hdl ) ; <S2SV_ModEnd> v4l2_device_unregister ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10065\n\n```\nCWE-284 static Image * ReadVIFFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define VFF_CM_genericRGB 15 # define VFF_CM_ntscRGB 1 # define VFF_CM_NONE 0 # define VFF_DEP_DECORDER 0x4 # define VFF_DEP_NSORDER 0x8 # define VFF_DES_RAW 0 # define VFF_LOC_IMPLICIT 1 # define VFF_MAPTYP_NONE 0 # define VFF_MAPTYP_1_BYTE 1 # define VFF_MAPTYP_2_BYTE 2 # define VFF_MAPTYP_4_BYTE 4 # define VFF_MAPTYP_FLOAT 5 # define VFF_MAPTYP_DOUBLE 7 # define VFF_MS_NONE 0 # define VFF_MS_ONEPERBAND 1 # define VFF_MS_SHARED 3 # define VFF_TYP_BIT 0 # define VFF_TYP_1_BYTE 1 # define VFF_TYP_2_BYTE 2 # define VFF_TYP_4_BYTE 4 # define VFF_TYP_FLOAT 5 # define VFF_TYP_DOUBLE 9 typedef struct _ViffInfo { unsigned char identifier , file_type , release , version , machine_dependency , reserve [ 3 ] ; char comment [ 512 ] ; unsigned int rows , columns , subrows ; int x_offset , y_offset ; float x_bits_per_pixel , y_bits_per_pixel ; unsigned int location_type , location_dimension , number_of_images , number_data_bands , data_storage_type , data_encode_scheme , map_scheme , map_storage_type , map_rows , map_columns , map_subrows , map_enable , maps_per_cycle , color_space_model ; } ViffInfo ; double min_value , scale_factor , value ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bytes_per_pixel , max_packets , quantum ; ssize_t count , y ; unsigned char * pixels ; unsigned long lsb_first ; ViffInfo viff_info ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 1 , & viff_info . identifier ) ; do { if ( ( count != 1 ) || ( ( unsigned char ) viff_info . identifier != 0xab ) ) ThrowReaderException ( CorruptImageError , \"NotAVIFFImage\" ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . file_type ) , & viff_info . file_type ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . release ) , & viff_info . release ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . version ) , & viff_info . version ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . machine_dependency ) , & viff_info . machine_dependency ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . reserve ) , viff_info . reserve ) ; count = ReadBlob ( image , 512 , ( unsigned char * ) viff_info . comment ) ; viff_info . comment [ 511 ] = '\\\\0' ; if ( strlen ( viff_info . comment ) > 4 ) ( void ) SetImageProperty ( image , \"comment\" , viff_info . comment , exception ) ; if ( ( viff_info . machine_dependency == VFF_DEP_DECORDER ) || ( viff_info . machine_dependency == VFF_DEP_NSORDER ) ) image -> endian = LSBEndian ; else image -> endian = MSBEndian ; viff_info . rows = ReadBlobLong ( image ) ; viff_info . columns = ReadBlobLong ( image ) ; viff_info . subrows = ReadBlobLong ( image ) ; viff_info . x_offset = ( int ) ReadBlobLong ( image ) ; viff_info . y_offset = ( int ) ReadBlobLong ( image ) ; viff_info . x_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . y_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . location_type = ReadBlobLong ( image ) ; viff_info . location_dimension = ReadBlobLong ( image ) ; viff_info . number_of_images = ReadBlobLong ( image ) ; viff_info . number_data_bands = ReadBlobLong ( image ) ; viff_info . data_storage_type = ReadBlobLong ( image ) ; viff_info . data_encode_scheme = ReadBlobLong ( image ) ; viff_info . map_scheme = ReadBlobLong ( image ) ; viff_info . map_storage_type = ReadBlobLong ( image ) ; viff_info . map_rows = ReadBlobLong ( image ) ; viff_info . map_columns = ReadBlobLong ( image ) ; viff_info . map_subrows = ReadBlobLong ( image ) ; viff_info . map_enable = ReadBlobLong ( image ) ; viff_info . maps_per_cycle = ReadBlobLong ( image ) ; viff_info . color_space_model = ReadBlobLong ( image ) ; for ( i = 0 ; i < 420 ; i ++ ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; image -> depth = viff_info . x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH ; number_pixels = ( MagickSizeType ) viff_info . columns * viff_info . rows ; if ( number_pixels != ( size_t ) number_pixels ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( number_pixels == 0 ) ThrowReaderException ( CoderError , \"ImageColumnOrRowSizeIsNotSupported\" ) ; if ( ( viff_info . number_data_bands < 1 ) || ( viff_info . number_data_bands > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( viff_info . data_storage_type != VFF_TYP_BIT ) && ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_2_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_4_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_FLOAT ) && ( viff_info . data_storage_type != VFF_TYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"DataStorageTypeIsNotSupported\" ) ; if ( viff_info . data_encode_scheme != VFF_DES_RAW ) ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; if ( ( viff_info . map_storage_type != VFF_MAPTYP_NONE ) && ( viff_info . map_storage_type != VFF_MAPTYP_1_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_2_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_4_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_FLOAT ) && ( viff_info . map_storage_type != VFF_MAPTYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"MapStorageTypeIsNotSupported\" ) ; if ( ( viff_info . color_space_model != VFF_CM_NONE ) && ( viff_info . color_space_model != VFF_CM_ntscRGB ) && ( viff_info . color_space_model != VFF_CM_genericRGB ) ) ThrowReaderException ( CoderError , \"ColorspaceModelIsNotSupported\" ) ; if ( viff_info . location_type != VFF_LOC_IMPLICIT ) ThrowReaderException ( CoderError , \"LocationTypeIsNotSupported\" ) ; if ( viff_info . number_of_images != 1 ) ThrowReaderException ( CoderError , \"NumberOfImagesIsNotSupported\" ) ; if ( viff_info . map_rows == 0 ) viff_info . map_scheme = VFF_MS_NONE ; switch ( ( int ) viff_info . map_scheme ) { case VFF_MS_NONE : { if ( viff_info . number_data_bands < 3 ) { if ( viff_info . data_storage_type == VFF_TYP_BIT ) image -> colors = 2 ; else if ( viff_info . data_storage_type == VFF_MAPTYP_1_BYTE ) image -> colors = 256UL ; else image -> colors = image -> depth <= 8 ? 256UL : 65536UL ; status = AcquireImageColormap ( image , image -> colors , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case VFF_MS_ONEPERBAND : case VFF_MS_SHARED : { unsigned char * viff_colormap ; switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_1_BYTE : bytes_per_pixel = 1 ; break ; case VFF_MAPTYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_MAPTYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } image -> colors = viff_info . map_columns ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( viff_info . map_rows > ( viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ; if ( viff_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , bytes_per_pixel * image -> colors * viff_info . map_rows , viff_colormap ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : { MSBOrderShort ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } case VFF_MAPTYP_4_BYTE : case VFF_MAPTYP_FLOAT : { MSBOrderLong ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } default : break ; } for ( i = 0 ; i < ( ssize_t ) ( viff_info . map_rows * image -> colors ) ; i ++ ) { switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : value = 1.0 * ( ( short * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_4_BYTE : value = 1.0 * ( ( int * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_FLOAT : value = ( ( float * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_DOUBLE : value = ( ( double * ) viff_colormap ) [ i ] ; break ; default : value = 1.0 * viff_colormap [ i ] ; break ; } if ( i < ( ssize_t ) image -> colors ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } else if ( i < ( ssize_t ) ( 2 * image -> colors ) ) image -> colormap [ i % image -> colors ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; else if ( i < ( ssize_t ) ( 3 * image -> colors ) ) image -> colormap [ i % image -> colors ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } viff_colormap = ( unsigned char * ) RelinquishMagickMemory ( viff_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = viff_info . number_data_bands == 4 ? BlendPixelTrait : UndefinedPixelTrait ; image -> storage_class = ( viff_info . number_data_bands < 3 ? PseudoClass : DirectClass ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_TYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_TYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_TYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } if ( viff_info . data_storage_type == VFF_TYP_BIT ) <S2SV_StartBug> max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; <S2SV_EndBug> else <S2SV_StartBug> max_packets = ( size_t ) ( number_pixels * viff_info . number_data_bands ) ; <S2SV_EndBug> pixels = ( unsigned char * ) AcquireQuantumMemory ( MagickMax ( number_pixels , max_packets ) , bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , bytes_per_pixel * max_packets , pixels ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : { MSBOrderShort ( pixels , bytes_per_pixel * max_packets ) ; break ; } case VFF_TYP_4_BYTE : case VFF_TYP_FLOAT : { MSBOrderLong ( pixels , bytes_per_pixel * max_packets ) ; break ; } default : break ; } min_value = 0.0 ; scale_factor = 1.0 ; if ( ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . map_scheme == VFF_MS_NONE ) ) { double max_value ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ 0 ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ 0 ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ 0 ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ 0 ] ; break ; default : value = 1.0 * pixels [ 0 ] ; break ; } max_value = value ; min_value = value ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( value > max_value ) max_value = value ; else if ( value < min_value ) min_value = value ; } if ( ( min_value == 0 ) && ( max_value == 0 ) ) scale_factor = 0 ; else if ( min_value == max_value ) { scale_factor = ( double ) QuantumRange / min_value ; min_value = 0 ; } else scale_factor = ( double ) QuantumRange / ( max_value - min_value ) ; } p = ( unsigned char * ) pixels ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( viff_info . map_scheme == VFF_MS_NONE ) { value = ( value - min_value ) * scale_factor ; if ( value > QuantumRange ) value = QuantumRange ; else if ( value < 0 ) value = 0 ; } * p = ( unsigned char ) ( ( Quantum ) value ) ; p ++ ; } p = ( unsigned char * ) pixels ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) ( image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( int ) ( image -> columns % 8 ) ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else if ( image -> storage_class == PseudoClass ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else { number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + number_pixels ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 * number_pixels ) ) , q ) ; if ( image -> colors != 0 ) { ssize_t index ; index = ( ssize_t ) GetPixelRed ( image , q ) ; SetPixelRed ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . red , q ) ; index = ( ssize_t ) GetPixelGreen ( image , q ) ; SetPixelGreen ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . green , q ) ; index = ( ssize_t ) GetPixelBlue ( image , q ) ; SetPixelBlue ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . blue , q ) ; } SetPixelAlpha ( image , image -> alpha_trait != UndefinedPixelTrait ? ScaleCharToQuantum ( * ( p + number_pixels * 3 ) ) : OpaqueAlpha , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; count = ReadBlob ( image , 1 , & viff_info . identifier ) ; if ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == VFF_TYP_BIT ) { if ( CheckMemoryOverflow <S2SV_ModEnd> ( ( image <S2SV_ModStart> ) >> 3UL , <S2SV_ModEnd> image -> rows <S2SV_ModStart> image -> rows ) != MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; } else { if ( CheckMemoryOverflow ( number_pixels , viff_info . number_data_bands ) != MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_ModEnd> max_packets = ( <S2SV_ModStart> number_data_bands ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11463\n\n```\nCWE-399 static int archive_read_format_zip_cleanup ( struct archive_read * a ) { struct zip * zip ; struct zip_entry * zip_entry , * next_zip_entry ; zip = ( struct zip * ) ( a -> format -> data ) ; # ifdef HAVE_ZLIB_H if ( zip -> stream_valid ) inflateEnd ( & zip -> stream ) ; # endif <S2SV_StartBug> # if HAVA_LZMA_H && HAVE_LIBLZMA <S2SV_EndBug> if ( zip -> zipx_lzma_valid ) { lzma_end ( & zip -> zipx_lzma_stream ) ; } # endif # ifdef HAVE_BZLIB_H if ( zip -> bzstream_valid ) { BZ2_bzDecompressEnd ( & zip -> bzstream ) ; } # endif free ( zip -> uncompressed_buffer ) ; if ( zip -> ppmd8_valid ) __archive_ppmd8_functions . Ppmd8_Free ( & zip -> ppmd8 ) ; if ( zip -> zip_entries ) { zip_entry = zip -> zip_entries ; while ( zip_entry != NULL ) { next_zip_entry = zip_entry -> next ; archive_string_free ( & zip_entry -> rsrcname ) ; free ( zip_entry ) ; zip_entry = next_zip_entry ; } } free ( zip -> decrypted_buffer ) ; if ( zip -> cctx_valid ) archive_decrypto_aes_ctr_release ( & zip -> cctx ) ; if ( zip -> hctx_valid ) archive_hmac_sha1_cleanup ( & zip -> hctx ) ; free ( zip -> iv ) ; free ( zip -> erd ) ; free ( zip -> v_data ) ; archive_string_free ( & zip -> format_name ) ; free ( zip ) ; ( a -> format -> data ) = NULL ; return ( ARCHIVE_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif # if HAVE_LZMA_H <S2SV_ModEnd> && HAVE_LIBLZMA if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10147\n\n```\nCWE-476 static int mcryptd_create_hash ( struct crypto_template * tmpl , struct rtattr * * tb , struct mcryptd_queue * queue ) { struct hashd_instance_ctx * ctx ; struct ahash_instance * inst ; struct hash_alg_common * halg ; struct crypto_alg * alg ; u32 type = 0 ; u32 mask = 0 ; int err ; <S2SV_StartBug> mcryptd_check_internal ( tb , & type , & mask ) ; <S2SV_EndBug> halg = ahash_attr_alg ( tb [ 1 ] , type , mask ) ; if ( IS_ERR ( halg ) ) return PTR_ERR ( halg ) ; alg = & halg -> base ; pr_debug ( \"crypto:<S2SV_blank>mcryptd<S2SV_blank>hash<S2SV_blank>alg:<S2SV_blank>%s\\\\n\" , alg -> cra_name ) ; inst = mcryptd_alloc_instance ( alg , ahash_instance_headroom ( ) , sizeof ( * ctx ) ) ; err = PTR_ERR ( inst ) ; if ( IS_ERR ( inst ) ) goto out_put_alg ; ctx = ahash_instance_ctx ( inst ) ; ctx -> queue = queue ; err = crypto_init_ahash_spawn ( & ctx -> spawn , halg , ahash_crypto_instance ( inst ) ) ; if ( err ) goto out_free_inst ; type = CRYPTO_ALG_ASYNC ; if ( alg -> cra_flags & CRYPTO_ALG_INTERNAL ) type |= CRYPTO_ALG_INTERNAL ; inst -> alg . halg . base . cra_flags = type ; inst -> alg . halg . digestsize = halg -> digestsize ; inst -> alg . halg . statesize = halg -> statesize ; inst -> alg . halg . base . cra_ctxsize = sizeof ( struct mcryptd_hash_ctx ) ; inst -> alg . halg . base . cra_init = mcryptd_hash_init_tfm ; inst -> alg . halg . base . cra_exit = mcryptd_hash_exit_tfm ; inst -> alg . init = mcryptd_hash_init_enqueue ; inst -> alg . update = mcryptd_hash_update_enqueue ; inst -> alg . final = mcryptd_hash_final_enqueue ; inst -> alg . finup = mcryptd_hash_finup_enqueue ; inst -> alg . export = mcryptd_hash_export ; inst -> alg . import = mcryptd_hash_import ; inst -> alg . setkey = mcryptd_hash_setkey ; inst -> alg . digest = mcryptd_hash_digest_enqueue ; err = ahash_register_instance ( tmpl , inst ) ; if ( err ) { crypto_drop_ahash ( & ctx -> spawn ) ; out_free_inst : kfree ( inst ) ; } out_put_alg : crypto_mod_put ( alg ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int err ; if ( ! <S2SV_ModStart> & mask ) ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010295\n\n```\nCWE-119 <S2SV_StartBug> static void utee_param_to_param ( struct tee_ta_param * p , struct utee_params * up ) <S2SV_EndBug> { size_t n ; uint32_t types = up -> types ; p -> types = types ; for ( n = 0 ; n < TEE_NUM_PARAMS ; n ++ ) { uintptr_t a = up -> vals [ n * 2 ] ; size_t b = up -> vals [ n * 2 + 1 ] ; <S2SV_StartBug> switch ( TEE_PARAM_TYPE_GET ( types , n ) ) { <S2SV_EndBug> <S2SV_StartBug> case TEE_PARAM_TYPE_MEMREF_INPUT : <S2SV_EndBug> case TEE_PARAM_TYPE_MEMREF_OUTPUT : case TEE_PARAM_TYPE_MEMREF_INOUT : p -> u [ n ] . mem . mobj = & mobj_virt ; p -> u [ n ] . mem . offs = a ; p -> u [ n ] . mem . size = b ; <S2SV_StartBug> break ; <S2SV_EndBug> case TEE_PARAM_TYPE_VALUE_INPUT : case TEE_PARAM_TYPE_VALUE_INOUT : p -> u [ n ] . val . a = a ; p -> u [ n ] . val . b = b ; break ; default : memset ( & p -> u [ n ] , 0 , sizeof ( p -> u [ n ] ) ) ; break ; } <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static TEE_Result utee_param_to_param ( struct user_ta_ctx * utc , <S2SV_ModEnd> struct tee_ta_param * <S2SV_ModStart> 1 ] ; uint32_t flags = TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER ; <S2SV_ModStart> ) { case TEE_PARAM_TYPE_MEMREF_OUTPUT : case TEE_PARAM_TYPE_MEMREF_INOUT : flags |= TEE_MEMORY_ACCESS_WRITE ; case TEE_PARAM_TYPE_MEMREF_INPUT <S2SV_ModEnd> : p -> <S2SV_ModStart> = b ; if ( tee_mmu_check_access_rights ( utc , flags , a , b ) ) return TEE_ERROR_ACCESS_DENIED ; <S2SV_ModStart> ; } } return TEE_SUCCESS ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10147\n\n```\nCWE-476 static int mcryptd_create_hash ( struct crypto_template * tmpl , struct rtattr * * tb , struct mcryptd_queue * queue ) { struct hashd_instance_ctx * ctx ; struct ahash_instance * inst ; struct hash_alg_common * halg ; struct crypto_alg * alg ; u32 type = 0 ; u32 mask = 0 ; int err ; <S2SV_StartBug> mcryptd_check_internal ( tb , & type , & mask ) ; <S2SV_EndBug> halg = ahash_attr_alg ( tb [ 1 ] , type , mask ) ; if ( IS_ERR ( halg ) ) return PTR_ERR ( halg ) ; alg = & halg -> base ; pr_debug ( \"crypto:<S2SV_blank>mcryptd<S2SV_blank>hash<S2SV_blank>alg:<S2SV_blank>%s\\\\n\" , alg -> cra_name ) ; inst = mcryptd_alloc_instance ( alg , ahash_instance_headroom ( ) , sizeof ( * ctx ) ) ; err = PTR_ERR ( inst ) ; if ( IS_ERR ( inst ) ) goto out_put_alg ; ctx = ahash_instance_ctx ( inst ) ; ctx -> queue = queue ; err = crypto_init_ahash_spawn ( & ctx -> spawn , halg , ahash_crypto_instance ( inst ) ) ; if ( err ) goto out_free_inst ; type = CRYPTO_ALG_ASYNC ; if ( alg -> cra_flags & CRYPTO_ALG_INTERNAL ) type |= CRYPTO_ALG_INTERNAL ; inst -> alg . halg . base . cra_flags = type ; inst -> alg . halg . digestsize = halg -> digestsize ; inst -> alg . halg . statesize = halg -> statesize ; inst -> alg . halg . base . cra_ctxsize = sizeof ( struct mcryptd_hash_ctx ) ; inst -> alg . halg . base . cra_init = mcryptd_hash_init_tfm ; inst -> alg . halg . base . cra_exit = mcryptd_hash_exit_tfm ; inst -> alg . init = mcryptd_hash_init_enqueue ; inst -> alg . update = mcryptd_hash_update_enqueue ; inst -> alg . final = mcryptd_hash_final_enqueue ; inst -> alg . finup = mcryptd_hash_finup_enqueue ; inst -> alg . export = mcryptd_hash_export ; inst -> alg . import = mcryptd_hash_import ; inst -> alg . setkey = mcryptd_hash_setkey ; inst -> alg . digest = mcryptd_hash_digest_enqueue ; err = ahash_register_instance ( tmpl , inst ) ; if ( err ) { crypto_drop_ahash ( & ctx -> spawn ) ; out_free_inst : kfree ( inst ) ; } out_put_alg : crypto_mod_put ( alg ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int err ; if ( ! <S2SV_ModStart> & mask ) ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void fdct8_sse2 ( __m128i * in ) { <S2SV_EndBug> <S2SV_StartBug> const __m128i k__cospi_p16_p16 = _mm_set1_epi16 ( cospi_16_64 ) ; <S2SV_EndBug> const __m128i k__cospi_p16_m16 = pair_set_epi16 ( cospi_16_64 , - cospi_16_64 ) ; const __m128i k__cospi_p24_p08 = pair_set_epi16 ( cospi_24_64 , cospi_8_64 ) ; const __m128i k__cospi_m08_p24 = pair_set_epi16 ( - cospi_8_64 , cospi_24_64 ) ; const __m128i k__cospi_p28_p04 = pair_set_epi16 ( cospi_28_64 , cospi_4_64 ) ; const __m128i k__cospi_m04_p28 = pair_set_epi16 ( - cospi_4_64 , cospi_28_64 ) ; const __m128i k__cospi_p12_p20 = pair_set_epi16 ( cospi_12_64 , cospi_20_64 ) ; const __m128i k__cospi_m20_p12 = pair_set_epi16 ( - cospi_20_64 , cospi_12_64 ) ; const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32 ( DCT_CONST_ROUNDING ) ; __m128i u0 , u1 , u2 , u3 , u4 , u5 , u6 , u7 ; __m128i v0 , v1 , v2 , v3 , v4 , v5 , v6 , v7 ; __m128i s0 , s1 , s2 , s3 , s4 , s5 , s6 , s7 ; s0 = _mm_add_epi16 ( in [ 0 ] , in [ 7 ] ) ; s1 = _mm_add_epi16 ( in [ 1 ] , in [ 6 ] ) ; s2 = _mm_add_epi16 ( in [ 2 ] , in [ 5 ] ) ; s3 = _mm_add_epi16 ( in [ 3 ] , in [ 4 ] ) ; s4 = _mm_sub_epi16 ( in [ 3 ] , in [ 4 ] ) ; s5 = _mm_sub_epi16 ( in [ 2 ] , in [ 5 ] ) ; s6 = _mm_sub_epi16 ( in [ 1 ] , in [ 6 ] ) ; s7 = _mm_sub_epi16 ( in [ 0 ] , in [ 7 ] ) ; u0 = _mm_add_epi16 ( s0 , s3 ) ; u1 = _mm_add_epi16 ( s1 , s2 ) ; u2 = _mm_sub_epi16 ( s1 , s2 ) ; u3 = _mm_sub_epi16 ( s0 , s3 ) ; v0 = _mm_unpacklo_epi16 ( u0 , u1 ) ; v1 = _mm_unpackhi_epi16 ( u0 , u1 ) ; v2 = _mm_unpacklo_epi16 ( u2 , u3 ) ; v3 = _mm_unpackhi_epi16 ( u2 , u3 ) ; u0 = _mm_madd_epi16 ( v0 , k__cospi_p16_p16 ) ; u1 = _mm_madd_epi16 ( v1 , k__cospi_p16_p16 ) ; u2 = _mm_madd_epi16 ( v0 , k__cospi_p16_m16 ) ; u3 = _mm_madd_epi16 ( v1 , k__cospi_p16_m16 ) ; u4 = _mm_madd_epi16 ( v2 , k__cospi_p24_p08 ) ; u5 = _mm_madd_epi16 ( v3 , k__cospi_p24_p08 ) ; u6 = _mm_madd_epi16 ( v2 , k__cospi_m08_p24 ) ; u7 = _mm_madd_epi16 ( v3 , k__cospi_m08_p24 ) ; v0 = _mm_add_epi32 ( u0 , k__DCT_CONST_ROUNDING ) ; v1 = _mm_add_epi32 ( u1 , k__DCT_CONST_ROUNDING ) ; v2 = _mm_add_epi32 ( u2 , k__DCT_CONST_ROUNDING ) ; v3 = _mm_add_epi32 ( u3 , k__DCT_CONST_ROUNDING ) ; v4 = _mm_add_epi32 ( u4 , k__DCT_CONST_ROUNDING ) ; v5 = _mm_add_epi32 ( u5 , k__DCT_CONST_ROUNDING ) ; v6 = _mm_add_epi32 ( u6 , k__DCT_CONST_ROUNDING ) ; v7 = _mm_add_epi32 ( u7 , k__DCT_CONST_ROUNDING ) ; u0 = _mm_srai_epi32 ( v0 , DCT_CONST_BITS ) ; u1 = _mm_srai_epi32 ( v1 , DCT_CONST_BITS ) ; u2 = _mm_srai_epi32 ( v2 , DCT_CONST_BITS ) ; u3 = _mm_srai_epi32 ( v3 , DCT_CONST_BITS ) ; u4 = _mm_srai_epi32 ( v4 , DCT_CONST_BITS ) ; u5 = _mm_srai_epi32 ( v5 , DCT_CONST_BITS ) ; u6 = _mm_srai_epi32 ( v6 , DCT_CONST_BITS ) ; u7 = _mm_srai_epi32 ( v7 , DCT_CONST_BITS ) ; in [ 0 ] = _mm_packs_epi32 ( u0 , u1 ) ; in [ 2 ] = _mm_packs_epi32 ( u4 , u5 ) ; in [ 4 ] = _mm_packs_epi32 ( u2 , u3 ) ; in [ 6 ] = _mm_packs_epi32 ( u6 , u7 ) ; u0 = _mm_unpacklo_epi16 ( s6 , s5 ) ; u1 = _mm_unpackhi_epi16 ( s6 , s5 ) ; v0 = _mm_madd_epi16 ( u0 , k__cospi_p16_m16 ) ; v1 = _mm_madd_epi16 ( u1 , k__cospi_p16_m16 ) ; v2 = _mm_madd_epi16 ( u0 , k__cospi_p16_p16 ) ; v3 = _mm_madd_epi16 ( u1 , k__cospi_p16_p16 ) ; u0 = _mm_add_epi32 ( v0 , k__DCT_CONST_ROUNDING ) ; u1 = _mm_add_epi32 ( v1 , k__DCT_CONST_ROUNDING ) ; u2 = _mm_add_epi32 ( v2 , k__DCT_CONST_ROUNDING ) ; u3 = _mm_add_epi32 ( v3 , k__DCT_CONST_ROUNDING ) ; v0 = _mm_srai_epi32 ( u0 , DCT_CONST_BITS ) ; v1 = _mm_srai_epi32 ( u1 , DCT_CONST_BITS ) ; v2 = _mm_srai_epi32 ( u2 , DCT_CONST_BITS ) ; v3 = _mm_srai_epi32 ( u3 , DCT_CONST_BITS ) ; u0 = _mm_packs_epi32 ( v0 , v1 ) ; u1 = _mm_packs_epi32 ( v2 , v3 ) ; s0 = _mm_add_epi16 ( s4 , u0 ) ; s1 = _mm_sub_epi16 ( s4 , u0 ) ; s2 = _mm_sub_epi16 ( s7 , u1 ) ; s3 = _mm_add_epi16 ( s7 , u1 ) ; u0 = _mm_unpacklo_epi16 ( s0 , s3 ) ; u1 = _mm_unpackhi_epi16 ( s0 , s3 ) ; u2 = _mm_unpacklo_epi16 ( s1 , s2 ) ; u3 = _mm_unpackhi_epi16 ( s1 , s2 ) ; v0 = _mm_madd_epi16 ( u0 , k__cospi_p28_p04 ) ; v1 = _mm_madd_epi16 ( u1 , k__cospi_p28_p04 ) ; v2 = _mm_madd_epi16 ( u2 , k__cospi_p12_p20 ) ; v3 = _mm_madd_epi16 ( u3 , k__cospi_p12_p20 ) ; v4 = _mm_madd_epi16 ( u2 , k__cospi_m20_p12 ) ; v5 = _mm_madd_epi16 ( u3 , k__cospi_m20_p12 ) ; v6 = _mm_madd_epi16 ( u0 , k__cospi_m04_p28 ) ; v7 = _mm_madd_epi16 ( u1 , k__cospi_m04_p28 ) ; u0 = _mm_add_epi32 ( v0 , k__DCT_CONST_ROUNDING ) ; u1 = _mm_add_epi32 ( v1 , k__DCT_CONST_ROUNDING ) ; u2 = _mm_add_epi32 ( v2 , k__DCT_CONST_ROUNDING ) ; u3 = _mm_add_epi32 ( v3 , k__DCT_CONST_ROUNDING ) ; u4 = _mm_add_epi32 ( v4 , k__DCT_CONST_ROUNDING ) ; u5 = _mm_add_epi32 ( v5 , k__DCT_CONST_ROUNDING ) ; u6 = _mm_add_epi32 ( v6 , k__DCT_CONST_ROUNDING ) ; u7 = _mm_add_epi32 ( v7 , k__DCT_CONST_ROUNDING ) ; v0 = _mm_srai_epi32 ( u0 , DCT_CONST_BITS ) ; v1 = _mm_srai_epi32 ( u1 , DCT_CONST_BITS ) ; v2 = _mm_srai_epi32 ( u2 , DCT_CONST_BITS ) ; v3 = _mm_srai_epi32 ( u3 , DCT_CONST_BITS ) ; v4 = _mm_srai_epi32 ( u4 , DCT_CONST_BITS ) ; v5 = _mm_srai_epi32 ( u5 , DCT_CONST_BITS ) ; v6 = _mm_srai_epi32 ( u6 , DCT_CONST_BITS ) ; v7 = _mm_srai_epi32 ( u7 , DCT_CONST_BITS ) ; in [ 1 ] = _mm_packs_epi32 ( v0 , v1 ) ; in [ 3 ] = _mm_packs_epi32 ( v4 , v5 ) ; in [ 5 ] = _mm_packs_epi32 ( v2 , v3 ) ; in [ 7 ] = _mm_packs_epi32 ( v6 , v7 ) ; array_transpose_8x8 ( in , in ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> = _mm_set1_epi16 ( ( int16_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18224\n\n```\nCWE-787 int idn2_to_ascii_4i ( const uint32_t * input , size_t inlen , char * output , int flags ) { uint32_t * input_u32 ; uint8_t * input_u8 , * output_u8 ; size_t length ; int rc ; if ( ! input ) { if ( output ) * output = 0 ; return IDN2_OK ; } input_u32 = ( uint32_t * ) malloc ( ( inlen + 1 ) * sizeof ( uint32_t ) ) ; if ( ! input_u32 ) return IDN2_MALLOC ; u32_cpy ( input_u32 , input , inlen ) ; input_u32 [ inlen ] = 0 ; input_u8 = u32_to_u8 ( input_u32 , inlen + 1 , NULL , & length ) ; free ( input_u32 ) ; if ( ! input_u8 ) { if ( errno == ENOMEM ) return IDN2_MALLOC ; return IDN2_ENCODING_ERROR ; } rc = idn2_lookup_u8 ( input_u8 , & output_u8 , flags ) ; free ( input_u8 ) ; if ( rc == IDN2_OK ) { <S2SV_StartBug> if ( output ) <S2SV_EndBug> <S2SV_StartBug> strcpy ( output , ( const char * ) output_u8 ) ; <S2SV_EndBug> free ( output_u8 ) ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IDN2_OK ) { size_t len = strlen ( ( char * ) output_u8 ) ; if ( len > 63 ) { free ( output_u8 ) ; return IDN2_TOO_BIG_DOMAIN ; } <S2SV_ModStart> output , ( <S2SV_ModEnd> char * )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static bool check_underflow ( const struct ipt_entry * e ) { const struct xt_entry_target * t ; unsigned int verdict ; <S2SV_StartBug> if ( ! unconditional ( & e -> ip ) ) <S2SV_EndBug> return false ; t = ipt_get_target_c ( e ) ; if ( strcmp ( t -> u . user . name , XT_STANDARD_TARGET ) != 0 ) return false ; verdict = ( ( struct xt_standard_target * ) t ) -> verdict ; verdict = - verdict - 1 ; return verdict == NF_DROP || verdict == NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! unconditional ( e <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int ext2_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int name_index ; void * value = NULL ; size_t size = 0 ; int error ; switch ( type ) { case ACL_TYPE_ACCESS : name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; else { inode -> i_ctime = CURRENT_TIME_SEC ; mark_inode_dirty ( inode ) ; <S2SV_StartBug> if ( error == 0 ) <S2SV_EndBug> acl = NULL ; } } break ; case ACL_TYPE_DEFAULT : name_index = EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = ext2_acl_to_disk ( acl , & size ) ; if ( IS_ERR ( value ) ) return ( int ) PTR_ERR ( value ) ; } error = ext2_xattr_set ( inode , name_index , \"\" , value , size , 0 ) ; kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( error ) return error ; <S2SV_ModEnd> inode -> i_ctime <S2SV_ModStart> inode ) ; <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static void keyring_describe ( const struct key * keyring , struct seq_file * m ) { if ( keyring -> description ) seq_puts ( m , keyring -> description ) ; else seq_puts ( m , \"[anon]\" ) ; <S2SV_StartBug> if ( key_is_instantiated ( keyring ) ) { <S2SV_EndBug> if ( keyring -> keys . nr_leaves_on_tree != 0 ) seq_printf ( m , \":<S2SV_blank>%lu\" , keyring -> keys . nr_leaves_on_tree ) ; else seq_puts ( m , \":<S2SV_blank>empty\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( keyring )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum poly_in ( PG_FUNCTION_ARGS ) { char * str = PG_GETARG_CSTRING ( 0 ) ; POLYGON * poly ; int npts ; int size ; <S2SV_StartBug> int isopen ; <S2SV_EndBug> char * s ; if ( ( npts = pair_count ( str , ',' ) ) <= 0 ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"invalid<S2SV_blank>input<S2SV_blank>syntax<S2SV_blank>for<S2SV_blank>type<S2SV_blank>polygon:<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ) ) ; <S2SV_StartBug> size = offsetof ( POLYGON , p [ 0 ] ) + sizeof ( poly -> p [ 0 ] ) * npts ; <S2SV_EndBug> poly = ( POLYGON * ) palloc0 ( size ) ; SET_VARSIZE ( poly , size ) ; poly -> npts = npts ; if ( ( ! path_decode ( FALSE , npts , str , & isopen , & s , & ( poly -> p [ 0 ] ) ) ) || ( * s != '\\\\0' ) ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"invalid<S2SV_blank>input<S2SV_blank>syntax<S2SV_blank>for<S2SV_blank>type<S2SV_blank>polygon:<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ) ) ; make_bound_box ( poly ) ; PG_RETURN_POLYGON_P ( poly ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ; int base_size ; int <S2SV_ModStart> ) ) ; base_size = sizeof ( poly -> p [ 0 ] ) * npts ; <S2SV_ModStart> ] ) + base_size ; if ( base_size / npts != <S2SV_ModStart> 0 ] ) || size <= base_size ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"too<S2SV_blank>many<S2SV_blank>points<S2SV_blank>requested\" ) ) ) <S2SV_ModEnd> ; poly =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> void nsc_encode ( NSC_CONTEXT * context , const BYTE * bmpdata , UINT32 rowstride ) <S2SV_EndBug> { <S2SV_StartBug> nsc_encode_argb_to_aycocg ( context , bmpdata , rowstride ) ; <S2SV_EndBug> if ( context -> ChromaSubsamplingLevel ) { <S2SV_StartBug> nsc_encode_subsampling ( context ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> BOOL <S2SV_ModEnd> nsc_encode ( NSC_CONTEXT <S2SV_ModStart> rowstride ) { if ( ! context || ! bmpdata || ( rowstride == 0 ) ) return FALSE ; if ( ! <S2SV_ModStart> , rowstride ) ) return FALSE <S2SV_ModStart> ChromaSubsamplingLevel ) { if ( ! <S2SV_ModStart> ( context ) ) return FALSE ; } return TRUE ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4244\n\n```\nCWE-119 int process ( register int code , unsigned char * * fill ) { int incode ; static unsigned char firstchar ; if ( code == clear ) { codesize = datasize + 1 ; codemask = ( 1 << codesize ) - 1 ; avail = clear + 2 ; oldcode = - 1 ; return 1 ; } if ( oldcode == - 1 ) { <S2SV_StartBug> * ( * fill ) ++ = suffix [ code ] ; <S2SV_EndBug> firstchar = oldcode = code ; return 1 ; } if ( code > avail ) { fprintf ( stderr , \"code<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>for<S2SV_blank>%d\\\\n\" , code , avail ) ; return 0 ; } incode = code ; if ( code == avail ) { * stackp ++ = firstchar ; code = oldcode ; } while ( code > clear ) { * stackp ++ = suffix [ code ] ; code = prefix [ code ] ; } * stackp ++ = firstchar = suffix [ code ] ; prefix [ avail ] = oldcode ; suffix [ avail ] = firstchar ; avail ++ ; if ( ( ( avail & codemask ) == 0 ) && ( avail < 4096 ) ) { codesize ++ ; codemask += avail ; } oldcode = incode ; do { * ( * fill ) ++ = * -- stackp ; } while ( stackp > stack ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) { if ( code >= clear ) { fprintf ( stderr , \"bad<S2SV_blank>input:<S2SV_blank>code=%d<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>clear=%d\\\\n\" , code , clear ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12858\n\n```\nCWE-415 zip_int64_t _zip_dirent_read ( zip_dirent_t * zde , zip_source_t * src , zip_buffer_t * buffer , bool local , zip_error_t * error ) { zip_uint8_t buf [ CDENTRYSIZE ] ; zip_uint16_t dostime , dosdate ; zip_uint32_t size , variable_size ; zip_uint16_t filename_len , comment_len , ef_len ; bool from_buffer = ( buffer != NULL ) ; size = local ? LENTRYSIZE : CDENTRYSIZE ; if ( buffer ) { if ( _zip_buffer_left ( buffer ) < size ) { zip_error_set ( error , ZIP_ER_NOZIP , 0 ) ; return - 1 ; } } else { if ( ( buffer = _zip_buffer_new_from_source ( src , size , buf , error ) ) == NULL ) { return - 1 ; } } if ( memcmp ( _zip_buffer_get ( buffer , 4 ) , ( local ? LOCAL_MAGIC : CENTRAL_MAGIC ) , 4 ) != 0 ) { zip_error_set ( error , ZIP_ER_NOZIP , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } _zip_dirent_init ( zde ) ; if ( ! local ) zde -> version_madeby = _zip_buffer_get_16 ( buffer ) ; else zde -> version_madeby = 0 ; zde -> version_needed = _zip_buffer_get_16 ( buffer ) ; zde -> bitflags = _zip_buffer_get_16 ( buffer ) ; zde -> comp_method = _zip_buffer_get_16 ( buffer ) ; dostime = _zip_buffer_get_16 ( buffer ) ; dosdate = _zip_buffer_get_16 ( buffer ) ; zde -> last_mod = _zip_d2u_time ( dostime , dosdate ) ; zde -> crc = _zip_buffer_get_32 ( buffer ) ; zde -> comp_size = _zip_buffer_get_32 ( buffer ) ; zde -> uncomp_size = _zip_buffer_get_32 ( buffer ) ; filename_len = _zip_buffer_get_16 ( buffer ) ; ef_len = _zip_buffer_get_16 ( buffer ) ; if ( local ) { comment_len = 0 ; zde -> disk_number = 0 ; zde -> int_attrib = 0 ; zde -> ext_attrib = 0 ; zde -> offset = 0 ; } else { comment_len = _zip_buffer_get_16 ( buffer ) ; zde -> disk_number = _zip_buffer_get_16 ( buffer ) ; zde -> int_attrib = _zip_buffer_get_16 ( buffer ) ; zde -> ext_attrib = _zip_buffer_get_32 ( buffer ) ; zde -> offset = _zip_buffer_get_32 ( buffer ) ; } if ( ! _zip_buffer_ok ( buffer ) ) { zip_error_set ( error , ZIP_ER_INTERNAL , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( zde -> bitflags & ZIP_GPBF_ENCRYPTED ) { if ( zde -> bitflags & ZIP_GPBF_STRONG_ENCRYPTION ) { zde -> encryption_method = ZIP_EM_UNKNOWN ; } else { zde -> encryption_method = ZIP_EM_TRAD_PKWARE ; } } else { zde -> encryption_method = ZIP_EM_NONE ; } zde -> filename = NULL ; zde -> extra_fields = NULL ; zde -> comment = NULL ; variable_size = ( zip_uint32_t ) filename_len + ( zip_uint32_t ) ef_len + ( zip_uint32_t ) comment_len ; if ( from_buffer ) { if ( _zip_buffer_left ( buffer ) < variable_size ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; return - 1 ; } } else { _zip_buffer_free ( buffer ) ; if ( ( buffer = _zip_buffer_new_from_source ( src , variable_size , NULL , error ) ) == NULL ) { return - 1 ; } } if ( filename_len ) { zde -> filename = _zip_read_string ( buffer , src , filename_len , 1 , error ) ; if ( ! zde -> filename ) { if ( zip_error_code_zip ( error ) == ZIP_ER_EOF ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; } if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( zde -> bitflags & ZIP_GPBF_ENCODING_UTF_8 ) { if ( _zip_guess_encoding ( zde -> filename , ZIP_ENCODING_UTF8_KNOWN ) == ZIP_ENCODING_ERROR ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } } } if ( ef_len ) { zip_uint8_t * ef = _zip_read_data ( buffer , src , ef_len , 0 , error ) ; if ( ef == NULL ) { if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( ! _zip_ef_parse ( ef , ef_len , local ? ZIP_EF_LOCAL : ZIP_EF_CENTRAL , & zde -> extra_fields , error ) ) { free ( ef ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } free ( ef ) ; if ( local ) zde -> local_extra_fields_read = 1 ; } if ( comment_len ) { zde -> comment = _zip_read_string ( buffer , src , comment_len , 0 , error ) ; if ( ! zde -> comment ) { if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( zde -> bitflags & ZIP_GPBF_ENCODING_UTF_8 ) { if ( _zip_guess_encoding ( zde -> comment , ZIP_ENCODING_UTF8_KNOWN ) == ZIP_ENCODING_ERROR ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } } } zde -> filename = _zip_dirent_process_ef_utf_8 ( zde , ZIP_EF_UTF_8_NAME , zde -> filename ) ; zde -> comment = _zip_dirent_process_ef_utf_8 ( zde , ZIP_EF_UTF_8_COMMENT , zde -> comment ) ; if ( zde -> uncomp_size == ZIP_UINT32_MAX || zde -> comp_size == ZIP_UINT32_MAX || zde -> offset == ZIP_UINT32_MAX ) { zip_uint16_t got_len ; zip_buffer_t * ef_buffer ; const zip_uint8_t * ef = _zip_ef_get_by_id ( zde -> extra_fields , & got_len , ZIP_EF_ZIP64 , 0 , local ? ZIP_EF_LOCAL : ZIP_EF_CENTRAL , error ) ; if ( ef == NULL ) { if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( ( ef_buffer = _zip_buffer_new ( ( zip_uint8_t * ) ef , got_len ) ) == NULL ) { zip_error_set ( error , ZIP_ER_MEMORY , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( zde -> uncomp_size == ZIP_UINT32_MAX ) zde -> uncomp_size = _zip_buffer_get_64 ( ef_buffer ) ; else if ( local ) { ( void ) _zip_buffer_skip ( ef_buffer , 8 ) ; } if ( zde -> comp_size == ZIP_UINT32_MAX ) zde -> comp_size = _zip_buffer_get_64 ( ef_buffer ) ; if ( ! local ) { if ( zde -> offset == ZIP_UINT32_MAX ) zde -> offset = _zip_buffer_get_64 ( ef_buffer ) ; if ( zde -> disk_number == ZIP_UINT16_MAX ) zde -> disk_number = _zip_buffer_get_32 ( buffer ) ; } if ( ! _zip_buffer_eof ( ef_buffer ) ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; _zip_buffer_free ( ef_buffer ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } _zip_buffer_free ( ef_buffer ) ; } if ( ! _zip_buffer_ok ( buffer ) ) { zip_error_set ( error , ZIP_ER_INTERNAL , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } if ( zde -> offset > ZIP_INT64_MAX ) { zip_error_set ( error , ZIP_ER_SEEK , EFBIG ) ; return - 1 ; } if ( ! _zip_dirent_process_winzip_aes ( zde , error ) ) { <S2SV_StartBug> if ( ! from_buffer ) { <S2SV_EndBug> _zip_buffer_free ( buffer ) ; } return - 1 ; } zde -> extra_fields = _zip_ef_remove_internal ( zde -> extra_fields ) ; return ( zip_int64_t ) ( size + variable_size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { <S2SV_ModEnd> return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3817\n\n```\nCWE-416 void comps_rtree_unite ( COMPS_RTree * rt1 , COMPS_RTree * rt2 ) { COMPS_HSList * tmplist , * tmp_subnodes ; COMPS_HSListItem * it ; struct Pair { COMPS_HSList * subnodes ; char * key ; <S2SV_StartBug> char added ; <S2SV_EndBug> } * pair , * parent_pair ; pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = rt2 -> subnodes ; pair -> key = NULL ; tmplist = comps_hslist_create ( ) ; comps_hslist_init ( tmplist , NULL , NULL , & free ) ; comps_hslist_append ( tmplist , pair , 0 ) ; while ( tmplist -> first != NULL ) { it = tmplist -> first ; comps_hslist_remove ( tmplist , tmplist -> first ) ; tmp_subnodes = ( ( struct Pair * ) it -> data ) -> subnodes ; parent_pair = ( struct Pair * ) it -> data ; free ( it ) ; for ( it = tmp_subnodes -> first ; it != NULL ; it = it -> next ) { pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = ( ( COMPS_RTreeData * ) it -> data ) -> subnodes ; if ( parent_pair -> key != NULL ) { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_RTreeData * ) it -> data ) -> key ) + strlen ( parent_pair -> key ) + 1 ) ) ; memcpy ( pair -> key , parent_pair -> key , sizeof ( char ) * strlen ( parent_pair -> key ) ) ; memcpy ( pair -> key + strlen ( parent_pair -> key ) , ( ( COMPS_RTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_RTreeData * ) it -> data ) -> key ) + 1 ) ) ; } else { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_RTreeData * ) it -> data ) -> key ) + 1 ) ) ; memcpy ( pair -> key , ( ( COMPS_RTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_RTreeData * ) it -> data ) -> key ) + 1 ) ) ; } if ( ( ( COMPS_RTreeData * ) it -> data ) -> data != NULL ) { comps_rtree_set ( rt1 , pair -> key , rt2 -> data_cloner ( ( ( COMPS_RTreeData * ) it -> data ) -> data ) ) ; } if ( ( ( COMPS_RTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } free ( parent_pair -> key ) ; free ( parent_pair ) ; } comps_hslist_destroy ( & tmplist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * key ; <S2SV_ModEnd> } * pair\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t icecastClientConnect ( IcecastClientContext * context ) { error_t error ; size_t length ; uint16_t serverPort ; IpAddr serverIpAddr ; NetInterface * interface ; interface = context -> settings . interface ; if ( osStrcmp ( interface -> proxyName , \"\" ) ) { const char_t requestTemplate [ ] = \"GET<S2SV_blank>http://%s:%\" PRIu16 \"%s<S2SV_blank>HTTP/1.1\\\\r\\\\n\" \"Host:<S2SV_blank>%s:%\" PRIu16 \"\\\\r\\\\n\" \"User-agent:<S2SV_blank>UserAgent\\\\r\\\\n\" \"Icy-MetaData:<S2SV_blank>1\\\\r\\\\n\" \"Connection:<S2SV_blank>close\\\\r\\\\n\" \"\\\\r\\\\n\" ; length = osSprintf ( context -> buffer , requestTemplate , context -> settings . serverName , context -> settings . serverPort , context -> settings . resource , context -> settings . serverName , context -> settings . serverPort ) ; error = getHostByName ( interface , interface -> proxyName , & serverIpAddr , 0 ) ; if ( error ) return error ; serverPort = interface -> proxyPort ; } else { const char_t requestTemplate [ ] = \"GET<S2SV_blank>%s<S2SV_blank>HTTP/1.1\\\\r\\\\n\" \"Host:<S2SV_blank>%s\\\\r\\\\n\" \"User-agent:<S2SV_blank>UserAgent\\\\r\\\\n\" \"Icy-MetaData:<S2SV_blank>1\\\\r\\\\n\" \"Connection:<S2SV_blank>close\\\\r\\\\n\" \"\\\\r\\\\n\" ; length = osSprintf ( context -> buffer , requestTemplate , context -> settings . resource , context -> settings . serverName ) ; error = getHostByName ( interface , context -> settings . serverName , & serverIpAddr , 0 ) ; if ( error ) return error ; serverPort = context -> settings . serverPort ; } context -> socket = socketOpen ( SOCKET_TYPE_STREAM , SOCKET_IP_PROTO_TCP ) ; if ( context -> socket == NULL ) return ERROR_OUT_OF_RESOURCES ; do { error = socketBindToInterface ( context -> socket , interface ) ; if ( error ) break ; error = socketSetTimeout ( context -> socket , ICECAST_CLIENT_TIMEOUT ) ; if ( error ) break ; error = socketConnect ( context -> socket , & serverIpAddr , serverPort ) ; if ( error ) break ; TRACE_DEBUG ( context -> buffer ) ; error = socketSend ( context -> socket , context -> buffer , length , NULL , SOCKET_FLAG_WAIT_ACK ) ; if ( error ) break ; while ( 1 ) { char_t * separator ; char_t * property ; char_t * value ; error = socketReceive ( context -> socket , context -> buffer , ICECAST_CLIENT_METADATA_MAX_SIZE , & length , SOCKET_FLAG_BREAK_CRLF ) ; if ( error ) break ; context -> buffer [ length ] = '\\\\0' ; if ( ! osStrcmp ( context -> buffer , \"\\\\r\\\\n\" ) ) break ; <S2SV_StartBug> separator = strchr ( context -> buffer , ':' ) ; <S2SV_EndBug> if ( separator ) { * separator = '\\\\0' ; property = strTrimWhitespace ( context -> buffer ) ; value = strTrimWhitespace ( separator + 1 ) ; TRACE_INFO ( \"<%s>=<%s>\\\\r\\\\n\" , property , value ) ; if ( ! osStrcasecmp ( property , \"Icy-Metaint\" ) ) { context -> blockSize = atoi ( value ) ; } } } } while ( 0 ) ; if ( error ) { socketClose ( context -> socket ) ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; separator = osStrchr <S2SV_ModEnd> ( context ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010305\n\n```\nCWE-119 static int chmd_read_headers ( struct mspack_system * sys , struct mspack_file * fh , struct mschmd_header * chm , int entire ) { unsigned int section , name_len , x , errors , num_chunks ; unsigned char buf [ 0x54 ] , * chunk = NULL , * name , * p , * end ; struct mschmd_file * fi , * link = NULL ; off_t offset , length ; int num_entries ; chm -> files = NULL ; chm -> sysfiles = NULL ; chm -> chunk_cache = NULL ; chm -> sec0 . base . chm = chm ; chm -> sec0 . base . id = 0 ; chm -> sec1 . base . chm = chm ; chm -> sec1 . base . id = 1 ; chm -> sec1 . content = NULL ; chm -> sec1 . control = NULL ; chm -> sec1 . spaninfo = NULL ; chm -> sec1 . rtable = NULL ; if ( sys -> read ( fh , & buf [ 0 ] , chmhead_SIZEOF ) != chmhead_SIZEOF ) { return MSPACK_ERR_READ ; } if ( EndGetI32 ( & buf [ chmhead_Signature ] ) != 0x46535449 ) { return MSPACK_ERR_SIGNATURE ; } if ( memcmp ( & buf [ chmhead_GUID1 ] , & guids [ 0 ] , 32L ) != 0 ) { D ( ( \"incorrect<S2SV_blank>GUIDs\" ) ) return MSPACK_ERR_SIGNATURE ; } chm -> version = EndGetI32 ( & buf [ chmhead_Version ] ) ; chm -> timestamp = EndGetM32 ( & buf [ chmhead_Timestamp ] ) ; chm -> language = EndGetI32 ( & buf [ chmhead_LanguageID ] ) ; if ( chm -> version > 3 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>CHM<S2SV_blank>version<S2SV_blank>><S2SV_blank>3\" ) ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhst3_SIZEOF ) != chmhst3_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & offset , & buf [ chmhst_OffsetHS0 ] , sys , fh ) || read_off64 ( & chm -> dir_offset , & buf [ chmhst_OffsetHS1 ] , sys , fh ) || read_off64 ( & chm -> sec0 . offset , & buf [ chmhst3_OffsetCS0 ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs0_SIZEOF ) != chmhs0_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & chm -> length , & buf [ chmhs0_FileLen ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , chm -> dir_offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs1_SIZEOF ) != chmhs1_SIZEOF ) { return MSPACK_ERR_READ ; } chm -> dir_offset = sys -> tell ( fh ) ; chm -> chunk_size = EndGetI32 ( & buf [ chmhs1_ChunkSize ] ) ; chm -> density = EndGetI32 ( & buf [ chmhs1_Density ] ) ; chm -> depth = EndGetI32 ( & buf [ chmhs1_Depth ] ) ; chm -> index_root = EndGetI32 ( & buf [ chmhs1_IndexRoot ] ) ; chm -> num_chunks = EndGetI32 ( & buf [ chmhs1_NumChunks ] ) ; chm -> first_pmgl = EndGetI32 ( & buf [ chmhs1_FirstPMGL ] ) ; chm -> last_pmgl = EndGetI32 ( & buf [ chmhs1_LastPMGL ] ) ; if ( chm -> version < 3 ) { chm -> sec0 . offset = chm -> dir_offset + ( chm -> chunk_size * chm -> num_chunks ) ; } if ( chm -> sec0 . offset > chm -> length ) { D ( ( \"content<S2SV_blank>section<S2SV_blank>begins<S2SV_blank>after<S2SV_blank>file<S2SV_blank>has<S2SV_blank>ended\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> chunk_size < ( pmgl_Entries + 2 ) ) { D ( ( \"chunk<S2SV_blank>size<S2SV_blank>not<S2SV_blank>large<S2SV_blank>enough\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks == 0 ) { D ( ( \"no<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks > 100000 ) { D ( ( \"more<S2SV_blank>than<S2SV_blank>100,000<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( off_t ) chm -> chunk_size * ( off_t ) chm -> num_chunks > chm -> length ) { D ( ( \"chunks<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>entire<S2SV_blank>file\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( chm -> chunk_size & ( chm -> chunk_size - 1 ) ) != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>two\" ) ; } if ( chm -> first_pmgl != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>first<S2SV_blank>PMGL<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>not<S2SV_blank>zero\" ) ; } if ( chm -> first_pmgl > chm -> last_pmgl ) { D ( ( \"first<S2SV_blank>pmgl<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>after<S2SV_blank>last<S2SV_blank>pmgl<S2SV_blank>chunk\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> index_root != 0xFFFFFFFF && chm -> index_root >= chm -> num_chunks ) { D ( ( \"index_root<S2SV_blank>outside<S2SV_blank>valid<S2SV_blank>range\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ! entire ) { return MSPACK_ERR_OK ; } if ( ( x = chm -> first_pmgl ) != 0 ) { if ( sys -> seek ( fh , ( off_t ) ( x * chm -> chunk_size ) , MSPACK_SYS_SEEK_CUR ) ) { return MSPACK_ERR_SEEK ; } } num_chunks = chm -> last_pmgl - x + 1 ; if ( ! ( chunk = ( unsigned char * ) sys -> alloc ( sys , ( size_t ) chm -> chunk_size ) ) ) { return MSPACK_ERR_NOMEMORY ; } errors = 0 ; while ( num_chunks -- ) { if ( sys -> read ( fh , chunk , ( int ) chm -> chunk_size ) != ( int ) chm -> chunk_size ) { sys -> free ( chunk ) ; return MSPACK_ERR_READ ; } if ( EndGetI32 ( & chunk [ pmgl_Signature ] ) != 0x4C474D50 ) continue ; if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) < 2 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\" ) ; } if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) > ( ( int ) chm -> chunk_size - pmgl_Entries ) ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ; } p = & chunk [ pmgl_Entries ] ; end = & chunk [ chm -> chunk_size - 2 ] ; num_entries = EndGetI16 ( end ) ; while ( num_entries -- ) { READ_ENCINT ( name_len ) ; if ( name_len > ( unsigned int ) ( end - p ) ) goto chunk_end ; name = p ; p += name_len ; READ_ENCINT ( section ) ; READ_ENCINT ( offset ) ; READ_ENCINT ( length ) ; if ( name_len < 2 || ! name [ 0 ] || ! name [ 1 ] ) continue ; if ( ( offset == 0 ) && ( length == 0 ) ) { if ( ( name_len > 0 ) && ( name [ name_len - 1 ] == '/' ) ) continue ; } if ( section > 1 ) { sys -> message ( fh , \"invalid<S2SV_blank>section<S2SV_blank>number<S2SV_blank>\\'%u\\'.\" , section ) ; continue ; } if ( ! ( fi = ( struct mschmd_file * ) sys -> alloc ( sys , sizeof ( struct mschmd_file ) + name_len + 1 ) ) ) { sys -> free ( chunk ) ; return MSPACK_ERR_NOMEMORY ; } fi -> next = NULL ; fi -> filename = ( char * ) & fi [ 1 ] ; fi -> section = ( ( section == 0 ) ? ( struct mschmd_section * ) ( & chm -> sec0 ) : ( struct mschmd_section * ) ( & chm -> sec1 ) ) ; fi -> offset = offset ; fi -> length = length ; sys -> copy ( name , fi -> filename , ( size_t ) name_len ) ; fi -> filename [ name_len ] = '\\\\0' ; if ( name [ 0 ] == ':' && name [ 1 ] == ':' ) { <S2SV_StartBug> if ( memcmp ( & name [ 2 ] , & content_name [ 2 ] , 31L ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> if ( memcmp ( & name [ 33 ] , & content_name [ 33 ] , 8L ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> chm -> sec1 . content = fi ; <S2SV_EndBug> } <S2SV_StartBug> else if ( memcmp ( & name [ 33 ] , & control_name [ 33 ] , 11L ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> chm -> sec1 . control = fi ; <S2SV_EndBug> } <S2SV_StartBug> else if ( memcmp ( & name [ 33 ] , & spaninfo_name [ 33 ] , 8L ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> chm -> sec1 . spaninfo = fi ; <S2SV_EndBug> } else if ( memcmp ( & name [ 33 ] , & rtable_name [ 33 ] , 72L ) == 0 ) { chm -> sec1 . rtable = fi ; <S2SV_StartBug> } <S2SV_EndBug> } fi -> next = chm -> sysfiles ; chm -> sysfiles = fi ; } else { if ( link ) link -> next = fi ; else chm -> files = fi ; link = fi ; } } chunk_end : if ( num_entries >= 0 ) { D ( ( \"chunk<S2SV_blank>ended<S2SV_blank>before<S2SV_blank>all<S2SV_blank>entries<S2SV_blank>could<S2SV_blank>be<S2SV_blank>read\" ) ) errors ++ ; } } sys -> free ( chunk ) ; return ( errors > 0 ) ? MSPACK_ERR_DATAFORMAT : MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( name_len == 40 && memcmp ( name , content_name , 40 <S2SV_ModEnd> ) == 0 <S2SV_ModStart> 0 ) { chm -> sec1 . content = fi ; } else if ( name_len == 44 && memcmp ( name , control_name , 44 <S2SV_ModEnd> ) == 0 <S2SV_ModStart> -> sec1 . control <S2SV_ModEnd> = fi ; <S2SV_ModStart> else if ( name_len == 41 && memcmp ( name , spaninfo_name , 41 <S2SV_ModEnd> ) == 0 <S2SV_ModStart> -> sec1 . spaninfo <S2SV_ModEnd> = fi ; <S2SV_ModStart> else if ( name_len == 105 && memcmp ( name , rtable_name , 105 <S2SV_ModEnd> ) == 0 <S2SV_ModStart> -> sec1 . <S2SV_ModEnd> rtable = fi <S2SV_ModStart> = fi ; <S2SV_ModEnd> } fi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void generate_filename ( const char * pattern , char * out , size_t q_len , <S2SV_EndBug> unsigned int d_w , unsigned int d_h , unsigned int frame_in ) { const char * p = pattern ; char * q = out ; do { char * next_pat = strchr ( p , '%' ) ; if ( p == next_pat ) { size_t pat_len ; q [ q_len - 1 ] = '\\\\0' ; switch ( p [ 1 ] ) { case 'w' : snprintf ( q , q_len - 1 , \"%d\" , d_w ) ; break ; case 'h' : snprintf ( q , q_len - 1 , \"%d\" , d_h ) ; break ; case '1' : snprintf ( q , q_len - 1 , \"%d\" , frame_in ) ; break ; case '2' : snprintf ( q , q_len - 1 , \"%02d\" , frame_in ) ; break ; case '3' : snprintf ( q , q_len - 1 , \"%03d\" , frame_in ) ; break ; case '4' : snprintf ( q , q_len - 1 , \"%04d\" , frame_in ) ; break ; case '5' : snprintf ( q , q_len - 1 , \"%05d\" , frame_in ) ; break ; case '6' : snprintf ( q , q_len - 1 , \"%06d\" , frame_in ) ; break ; case '7' : snprintf ( q , q_len - 1 , \"%07d\" , frame_in ) ; break ; case '8' : snprintf ( q , q_len - 1 , \"%08d\" , frame_in ) ; break ; case '9' : snprintf ( q , q_len - 1 , \"%09d\" , frame_in ) ; break ; default : die ( \"Unrecognized<S2SV_blank>pattern<S2SV_blank>%%%c\\\\n\" , p [ 1 ] ) ; <S2SV_StartBug> } <S2SV_EndBug> pat_len = strlen ( q ) ; if ( pat_len >= q_len - 1 ) die ( \"Output<S2SV_blank>filename<S2SV_blank>too<S2SV_blank>long.\\\\n\" ) ; q += pat_len ; p += 2 ; q_len -= pat_len ; } else { size_t copy_len ; if ( ! next_pat ) copy_len = strlen ( p ) ; else copy_len = next_pat - p ; if ( copy_len >= q_len - 1 ) die ( \"Output<S2SV_blank>filename<S2SV_blank>too<S2SV_blank>long.\\\\n\" ) ; memcpy ( q , p , copy_len ) ; q [ copy_len ] = '\\\\0' ; q += copy_len ; p += copy_len ; q_len -= copy_len ; } } while ( * p ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> ] ) ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void block_rd_txfm ( int plane , int block , BLOCK_SIZE plane_bsize , TX_SIZE tx_size , void * arg ) { struct rdcost_block_args * args = arg ; MACROBLOCK * const x = args -> x ; MACROBLOCKD * const xd = & x -> e_mbd ; MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; int64_t rd1 , rd2 , rd ; <S2SV_StartBug> if ( args -> skip ) <S2SV_EndBug> return ; <S2SV_StartBug> if ( ! is_inter_block ( mbmi ) ) <S2SV_EndBug> <S2SV_StartBug> vp9_encode_block_intra ( x , plane , block , plane_bsize , tx_size , & mbmi -> skip ) ; <S2SV_EndBug> else vp9_xform_quant ( x , plane , block , plane_bsize , tx_size ) ; <S2SV_StartBug> dist_block ( plane , block , tx_size , args ) ; <S2SV_EndBug> rate_block ( plane , block , plane_bsize , tx_size , args ) ; <S2SV_StartBug> rd1 = RDCOST ( x -> rdmult , x -> rddiv , args -> rate , args -> dist ) ; <S2SV_EndBug> <S2SV_StartBug> rd2 = RDCOST ( x -> rdmult , x -> rddiv , 0 , args -> sse ) ; <S2SV_EndBug> rd = MIN ( rd1 , rd2 ) ; if ( plane == 0 ) x -> zcoeff_blk [ tx_size ] [ block ] = ! x -> plane [ plane ] . eobs [ block ] || ( rd1 > rd2 && ! xd -> lossless ) ; <S2SV_StartBug> args -> this_rate += args -> rate ; <S2SV_EndBug> <S2SV_StartBug> args -> this_dist += args -> dist ; <S2SV_EndBug> <S2SV_StartBug> args -> this_sse += args -> sse ; <S2SV_EndBug> args -> this_rd += rd ; if ( args -> this_rd > args -> best_rd ) { <S2SV_StartBug> args -> skip = 1 ; <S2SV_EndBug> return ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , rd ; int rate ; int64_t dist ; int64_t sse ; if ( args -> exit_early <S2SV_ModEnd> ) return ; <S2SV_ModStart> mbmi ) ) { struct encode_b_args arg = { x , NULL , & mbmi -> skip } ; vp9_encode_block_intra ( <S2SV_ModEnd> plane , block <S2SV_ModStart> tx_size , & arg ) ; dist_block ( x , plane , block , tx_size , & dist , & sse ) ; } else if ( max_txsize_lookup [ plane_bsize ] == tx_size ) { if ( x -> skip_txfm [ ( plane << 2 ) + ( block >> ( tx_size << 1 ) ) ] == SKIP_TXFM_NONE ) { <S2SV_ModEnd> vp9_xform_quant ( x <S2SV_ModStart> ; dist_block ( x , plane , block , tx_size , & dist , & sse ) ; } else if ( x -> skip_txfm [ ( plane << 2 ) + ( block >> ( tx_size << 1 ) ) ] == SKIP_TXFM_AC_ONLY ) { tran_low_t * const coeff = BLOCK_OFFSET ( x -> plane [ plane ] . coeff , block ) ; tran_low_t * const dqcoeff = BLOCK_OFFSET ( xd -> plane [ plane ] . dqcoeff , block ) ; vp9_xform_quant_dc ( x , plane , block , plane_bsize , tx_size ) ; sse = x -> bsse [ ( plane << 2 ) + ( block >> ( tx_size << 1 ) ) ] << 4 ; dist = sse ; if ( x -> plane [ plane ] . eobs [ block ] ) { const int64_t orig_sse = ( int64_t ) coeff [ 0 ] * coeff [ 0 ] ; const int64_t resd_sse = coeff [ 0 ] - dqcoeff [ 0 ] ; int64_t dc_correct = orig_sse - resd_sse * resd_sse ; # if CONFIG_VP9_HIGHBITDEPTH dc_correct >>= ( ( xd -> bd - 8 ) * 2 ) ; # endif if ( tx_size != TX_32X32 ) dc_correct >>= 2 ; dist = MAX ( 0 , sse - dc_correct ) ; } } else { x -> plane [ plane ] . eobs [ block ] = 0 ; sse = x -> bsse [ ( plane << 2 ) + ( block >> ( tx_size << 1 ) ) ] << 4 ; dist = sse ; } } else { vp9_xform_quant ( x , plane , block , plane_bsize , tx_size ) ; dist_block ( x , plane , block , tx_size , & dist , & sse ) ; } rd = RDCOST ( x -> rdmult , x -> rddiv , 0 , dist ) ; if ( args -> this_rd + rd > args -> best_rd ) { args -> exit_early = 1 ; return ; } rate = <S2SV_ModEnd> rate_block ( plane <S2SV_ModStart> -> rddiv , rate , <S2SV_ModEnd> dist ) ; <S2SV_ModStart> , 0 , <S2SV_ModEnd> sse ) ; <S2SV_ModStart> -> this_rate += <S2SV_ModEnd> rate ; args <S2SV_ModStart> -> this_dist += <S2SV_ModEnd> dist ; args <S2SV_ModStart> -> this_sse += <S2SV_ModEnd> sse ; args <S2SV_ModStart> { args -> exit_early <S2SV_ModEnd> = 1 ; <S2SV_ModStart> return ; } args -> skippable &= ! x -> plane [ plane ] . eobs [ block ] ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14174\n\n```\nCWE-834 static MagickBooleanType ReadPSDLayersInternal ( Image * image , const ImageInfo * image_info , const PSDInfo * psd_info , const MagickBooleanType skip_layers , ExceptionInfo * exception ) { char type [ 4 ] ; LayerInfo * layer_info ; MagickSizeType size ; MagickBooleanType status ; register ssize_t i ; ssize_t count , j , number_layers ; size = GetPSDSize ( psd_info , image ) ; if ( size == 0 ) { ( void ) ReadBlobLong ( image ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; status = MagickFalse ; if ( ( count == 0 ) || ( LocaleNCompare ( type , \"8BIM\" , 4 ) != 0 ) ) return ( MagickTrue ) ; else { count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; if ( ( count != 0 ) && ( LocaleNCompare ( type , \"Lr16\" , 4 ) == 0 ) ) size = GetPSDSize ( psd_info , image ) ; else return ( MagickTrue ) ; } } status = MagickTrue ; if ( size != 0 ) { layer_info = ( LayerInfo * ) NULL ; number_layers = ( short ) ReadBlobShort ( image ) ; if ( number_layers < 0 ) { number_layers = MagickAbsoluteValue ( number_layers ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>negative<S2SV_blank>layer<S2SV_blank>count<S2SV_blank>corrected<S2SV_blank>for\" ) ; image -> alpha_trait = BlendPixelTrait ; } if ( skip_layers != MagickFalse ) return ( MagickTrue ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>image<S2SV_blank>contains<S2SV_blank>%.20g<S2SV_blank>layers\" , ( double ) number_layers ) ; if ( number_layers == 0 ) ThrowBinaryException ( CorruptImageError , \"InvalidNumberOfLayers\" , image -> filename ) ; layer_info = ( LayerInfo * ) AcquireQuantumMemory ( ( size_t ) number_layers , sizeof ( * layer_info ) ) ; if ( layer_info == ( LayerInfo * ) NULL ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>allocation<S2SV_blank>of<S2SV_blank>LayerInfo<S2SV_blank>failed\" ) ; ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; } ( void ) ResetMagickMemory ( layer_info , 0 , ( size_t ) number_layers * sizeof ( * layer_info ) ) ; for ( i = 0 ; i < number_layers ; i ++ ) { ssize_t x , y ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>reading<S2SV_blank>layer<S2SV_blank>#%.20g\" , ( double ) i + 1 ) ; layer_info [ i ] . page . y = ReadBlobSignedLong ( image ) ; layer_info [ i ] . page . x = ReadBlobSignedLong ( image ) ; y = ReadBlobSignedLong ( image ) ; x = ReadBlobSignedLong ( image ) ; layer_info [ i ] . page . width = ( size_t ) ( x - layer_info [ i ] . page . x ) ; layer_info [ i ] . page . height = ( size_t ) ( y - layer_info [ i ] . page . y ) ; layer_info [ i ] . channels = ReadBlobShort ( image ) ; if ( layer_info [ i ] . channels > MaxPSDChannels ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"MaximumChannelsExceeded\" , image -> filename ) ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>offset(%.20g,%.20g),<S2SV_blank>size(%.20g,%.20g),<S2SV_blank>channels=%.20g\" , ( double ) layer_info [ i ] . page . x , ( double ) layer_info [ i ] . page . y , ( double ) layer_info [ i ] . page . height , ( double ) layer_info [ i ] . page . width , ( double ) layer_info [ i ] . channels ) ; for ( j = 0 ; j < ( ssize_t ) layer_info [ i ] . channels ; j ++ ) { layer_info [ i ] . channel_info [ j ] . type = ( short ) ReadBlobShort ( image ) ; layer_info [ i ] . channel_info [ j ] . size = ( size_t ) GetPSDSize ( psd_info , image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>channel[%.20g]:<S2SV_blank>type=%.20g,<S2SV_blank>size=%.20g\" , ( double ) j , ( double ) layer_info [ i ] . channel_info [ j ] . type , ( double ) layer_info [ i ] . channel_info [ j ] . size ) ; } count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; if ( ( count == 0 ) || ( LocaleNCompare ( type , \"8BIM\" , 4 ) != 0 ) ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>layer<S2SV_blank>type<S2SV_blank>was<S2SV_blank>%.4s<S2SV_blank>instead<S2SV_blank>of<S2SV_blank>8BIM\" , type ) ; layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"ImproperImageHeader\" , image -> filename ) ; } count = ReadBlob ( image , 4 , ( unsigned char * ) layer_info [ i ] . blendkey ) ; ReversePSDString ( image , layer_info [ i ] . blendkey , 4 ) ; layer_info [ i ] . opacity = ( Quantum ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; layer_info [ i ] . clipping = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . flags = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . visible = ! ( layer_info [ i ] . flags & 0x02 ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>blend=%.4s,<S2SV_blank>opacity=%.20g,<S2SV_blank>clipping=%s,<S2SV_blank>flags=%d,<S2SV_blank>visible=%s\" , layer_info [ i ] . blendkey , ( double ) layer_info [ i ] . opacity , layer_info [ i ] . clipping ? \"true\" : \"false\" , layer_info [ i ] . flags , layer_info [ i ] . visible ? \"true\" : \"false\" ) ; ( void ) ReadBlobByte ( image ) ; size = ReadBlobLong ( image ) ; if ( size != 0 ) { MagickSizeType combined_length , length ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>contains<S2SV_blank>additional<S2SV_blank>info\" ) ; length = ReadBlobLong ( image ) ; combined_length = length + 4 ; if ( length != 0 ) { layer_info [ i ] . mask . page . y = ReadBlobSignedLong ( image ) ; layer_info [ i ] . mask . page . x = ReadBlobSignedLong ( image ) ; layer_info [ i ] . mask . page . height = ( size_t ) ( ReadBlobSignedLong ( image ) - layer_info [ i ] . mask . page . y ) ; layer_info [ i ] . mask . page . width = ( size_t ) ( ReadBlobSignedLong ( image ) - layer_info [ i ] . mask . page . x ) ; layer_info [ i ] . mask . background = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . mask . flags = ( unsigned char ) ReadBlobByte ( image ) ; if ( ! ( layer_info [ i ] . mask . flags & 0x01 ) ) { layer_info [ i ] . mask . page . y = layer_info [ i ] . mask . page . y - layer_info [ i ] . page . y ; layer_info [ i ] . mask . page . x = layer_info [ i ] . mask . page . x - layer_info [ i ] . page . x ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>mask:<S2SV_blank>offset(%.20g,%.20g),<S2SV_blank>size(%.20g,%.20g),<S2SV_blank>length=%.20g\" , ( double ) layer_info [ i ] . mask . page . x , ( double ) layer_info [ i ] . mask . page . y , ( double ) layer_info [ i ] . mask . page . width , ( double ) layer_info [ i ] . mask . page . height , ( double ) ( ( MagickOffsetType ) length ) - 18 ) ; if ( DiscardBlobBytes ( image , ( MagickSizeType ) ( length - 18 ) ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } length = ReadBlobLong ( image ) ; combined_length += length + 4 ; if ( length != 0 ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>blending<S2SV_blank>ranges:<S2SV_blank>length=%.20g\" , ( double ) ( ( MagickOffsetType ) length ) ) ; <S2SV_StartBug> for ( j = 0 ; j < ( ssize_t ) length ; j += 8 ) <S2SV_EndBug> { size_t blend_source = ReadBlobLong ( image ) ; size_t blend_dest = ReadBlobLong ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , <S2SV_StartBug> \"InsufficientImageDataInFile\" , image -> filename ) ; <S2SV_EndBug> } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>source(%x),<S2SV_blank>dest(%x)\" , ( unsigned int ) blend_source , ( unsigned int ) blend_dest ) ; } } length = ( MagickSizeType ) ( unsigned char ) ReadBlobByte ( image ) ; combined_length += length + 1 ; if ( length > 0 ) ( void ) ReadBlob ( image , ( size_t ) length ++ , layer_info [ i ] . name ) ; layer_info [ i ] . name [ length ] = '\\\\0' ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>name:<S2SV_blank>%s\" , layer_info [ i ] . name ) ; if ( ( length % 4 ) != 0 ) { length = 4 - ( length % 4 ) ; combined_length += length ; if ( DiscardBlobBytes ( image , length ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } length = ( MagickSizeType ) size - combined_length ; if ( length > 0 ) { unsigned char * info ; if ( length > GetBlobSize ( image ) ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"InsufficientImageDataInFile\" , image -> filename ) ; } layer_info [ i ] . info = AcquireStringInfo ( ( const size_t ) length ) ; info = GetStringInfoDatum ( layer_info [ i ] . info ) ; ( void ) ReadBlob ( image , ( const size_t ) length , info ) ; } } } for ( i = 0 ; i < number_layers ; i ++ ) { if ( ( layer_info [ i ] . page . width == 0 ) || ( layer_info [ i ] . page . height == 0 ) ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>data<S2SV_blank>is<S2SV_blank>empty\" ) ; if ( layer_info [ i ] . info != ( StringInfo * ) NULL ) layer_info [ i ] . info = DestroyStringInfo ( layer_info [ i ] . info ) ; continue ; } layer_info [ i ] . image = CloneImage ( image , layer_info [ i ] . page . width , layer_info [ i ] . page . height , MagickFalse , exception ) ; if ( layer_info [ i ] . image == ( Image * ) NULL ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>allocation<S2SV_blank>of<S2SV_blank>image<S2SV_blank>for<S2SV_blank>layer<S2SV_blank>%.20g<S2SV_blank>failed\" , ( double ) i ) ; ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; } if ( layer_info [ i ] . info != ( StringInfo * ) NULL ) { ( void ) SetImageProfile ( layer_info [ i ] . image , \"psd:additional-info\" , layer_info [ i ] . info , exception ) ; layer_info [ i ] . info = DestroyStringInfo ( layer_info [ i ] . info ) ; } } if ( image_info -> ping == MagickFalse ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( layer_info [ i ] . image == ( Image * ) NULL ) { for ( j = 0 ; j < layer_info [ i ] . channels ; j ++ ) { if ( DiscardBlobBytes ( image , ( MagickSizeType ) layer_info [ i ] . channel_info [ j ] . size ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } continue ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>reading<S2SV_blank>data<S2SV_blank>for<S2SV_blank>layer<S2SV_blank>%.20g\" , ( double ) i ) ; status = ReadPSDLayer ( image , image_info , psd_info , & layer_info [ i ] , exception ) ; if ( status == MagickFalse ) break ; status = SetImageProgress ( image , LoadImagesTag , i , ( MagickSizeType ) number_layers ) ; if ( status == MagickFalse ) break ; } } if ( status != MagickFalse ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( layer_info [ i ] . image == ( Image * ) NULL ) { for ( j = i ; j < number_layers - 1 ; j ++ ) layer_info [ j ] = layer_info [ j + 1 ] ; number_layers -- ; i -- ; } } if ( number_layers > 0 ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( i > 0 ) layer_info [ i ] . image -> previous = layer_info [ i - 1 ] . image ; if ( i < ( number_layers - 1 ) ) layer_info [ i ] . image -> next = layer_info [ i + 1 ] . image ; layer_info [ i ] . image -> page = layer_info [ i ] . page ; } image -> next = layer_info [ 0 ] . image ; layer_info [ 0 ] . image -> previous = image ; } layer_info = ( LayerInfo * ) RelinquishMagickMemory ( layer_info ) ; } else layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; } return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( DiscardBlobBytes ( image , length ) == <S2SV_ModEnd> MagickFalse ) { <S2SV_ModStart> ( CorruptImageError , \"UnexpectedEndOfFile\" <S2SV_ModEnd> , image -> <S2SV_ModStart> image -> filename <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12818\n\n```\nCWE-476 static int nfc_llcp_build_gb ( struct nfc_llcp_local * local ) { <S2SV_StartBug> u8 * gb_cur , * version_tlv , version , version_length ; <S2SV_EndBug> u8 * lto_tlv , lto_length ; u8 * wks_tlv , wks_length ; u8 * miux_tlv , miux_length ; __be16 wks = cpu_to_be16 ( local -> local_wks ) ; u8 gb_len = 0 ; int ret = 0 ; version = LLCP_VERSION_11 ; version_tlv = nfc_llcp_build_tlv ( LLCP_TLV_VERSION , & version , 1 , & version_length ) ; <S2SV_StartBug> gb_len += version_length ; <S2SV_EndBug> lto_tlv = nfc_llcp_build_tlv ( LLCP_TLV_LTO , & local -> lto , 1 , & lto_length ) ; <S2SV_StartBug> gb_len += lto_length ; <S2SV_EndBug> pr_debug ( \"Local<S2SV_blank>wks<S2SV_blank>0x%lx\\\\n\" , local -> local_wks ) ; wks_tlv = nfc_llcp_build_tlv ( LLCP_TLV_WKS , ( u8 * ) & wks , 2 , & wks_length ) ; <S2SV_StartBug> gb_len += wks_length ; <S2SV_EndBug> miux_tlv = nfc_llcp_build_tlv ( LLCP_TLV_MIUX , ( u8 * ) & local -> miux , 0 , <S2SV_StartBug> & miux_length ) ; <S2SV_EndBug> gb_len += miux_length ; gb_len += ARRAY_SIZE ( llcp_magic ) ; if ( gb_len > NFC_MAX_GT_LEN ) { ret = - EINVAL ; goto out ; } gb_cur = local -> gb ; memcpy ( gb_cur , llcp_magic , ARRAY_SIZE ( llcp_magic ) ) ; gb_cur += ARRAY_SIZE ( llcp_magic ) ; memcpy ( gb_cur , version_tlv , version_length ) ; gb_cur += version_length ; memcpy ( gb_cur , lto_tlv , lto_length ) ; gb_cur += lto_length ; memcpy ( gb_cur , wks_tlv , wks_length ) ; gb_cur += wks_length ; memcpy ( gb_cur , miux_tlv , miux_length ) ; gb_cur += miux_length ; local -> gb_len = gb_len ; out : kfree ( version_tlv ) ; kfree ( lto_tlv ) ; kfree ( wks_tlv ) ; kfree ( miux_tlv ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * gb_cur , version , version_length ; u8 lto_length , wks_length , miux_length ; u8 * version_tlv = NULL , * lto_tlv = NULL , * wks_tlv = NULL , * miux_tlv = NULL <S2SV_ModEnd> ; __be16 wks <S2SV_ModStart> version_length ) ; if ( ! version_tlv ) { ret = - ENOMEM ; goto out ; } <S2SV_ModStart> lto_length ) ; if ( ! lto_tlv ) { ret = - ENOMEM ; goto out ; } <S2SV_ModStart> wks_length ) ; if ( ! wks_tlv ) { ret = - ENOMEM ; goto out ; } <S2SV_ModStart> miux_length ) ; if ( ! miux_tlv ) { ret = - ENOMEM ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7184\n\n```\nCWE-000 static inline int xfrm_replay_verify_len ( struct xfrm_replay_state_esn * replay_esn , struct nlattr * rp ) { struct xfrm_replay_state_esn * up ; int ulen ; if ( ! replay_esn || ! rp ) return 0 ; up = nla_data ( rp ) ; ulen = xfrm_replay_state_esn_len ( up ) ; if ( nla_len ( rp ) < ulen || xfrm_replay_state_esn_len ( replay_esn ) != ulen ) return - EINVAL ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EINVAL ; if ( up -> replay_window > up -> bmp_len * sizeof ( __u32 ) * 8 ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0842\n\n```\nCWE-119 WORD32 ih264d_parse_pslice ( dec_struct_t * ps_dec , UWORD16 u2_first_mb_in_slice ) { dec_pic_params_t * ps_pps = ps_dec -> ps_cur_pps ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; UWORD8 u1_mbaff = ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag ; UWORD8 u1_field_pic_flag = ps_cur_slice -> u1_field_pic_flag ; UWORD32 u4_temp ; WORD32 i_temp ; WORD32 ret ; { WORD8 * pi1_buf ; WORD16 * pi2_mv = ps_dec -> s_default_mv_pred . i2_mv ; WORD32 * pi4_mv = ( WORD32 * ) pi2_mv ; WORD16 * pi16_refFrame ; pi1_buf = ps_dec -> s_default_mv_pred . i1_ref_frame ; pi16_refFrame = ( WORD16 * ) pi1_buf ; * pi4_mv = 0 ; * ( pi4_mv + 1 ) = 0 ; * pi16_refFrame = OUT_OF_RANGE_REF ; ps_dec -> s_default_mv_pred . u1_col_ref_pic_idx = ( UWORD8 ) - 1 ; ps_dec -> s_default_mv_pred . u1_pic_type = ( UWORD8 ) - 1 ; } ps_cur_slice -> u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>num_ref_idx_override_flag\" , ps_cur_slice -> u1_num_ref_idx_active_override_flag ) ; u4_temp = ps_dec -> ps_cur_pps -> u1_num_ref_idx_lx_active [ 0 ] ; if ( ps_cur_slice -> u1_num_ref_idx_active_override_flag ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) + 1 ; } { UWORD8 u1_max_ref_idx = MAX_FRAMES << u1_field_pic_flag ; if ( u4_temp > u1_max_ref_idx ) { return ERROR_NUM_REF ; } ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>num_ref_idx_l0_active_minus1\" , ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] - 1 ) ; } { UWORD8 uc_refIdxReFlagL0 = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>ref_pic_list_reordering_flag_l0\" , uc_refIdxReFlagL0 ) ; { UWORD8 init_idx_flg = ( ps_dec -> u1_pr_sl_type != ps_dec -> ps_cur_slice -> u1_slice_type ) ; if ( ps_dec -> u1_first_pb_nal_in_pic || ( init_idx_flg & ! ps_dec -> u1_sl_typ_5_9 ) || ps_dec -> u1_num_ref_idx_lx_active_prev != ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] ) { ih264d_init_ref_idx_lx_p ( ps_dec ) ; } if ( ps_dec -> u1_first_pb_nal_in_pic & ps_dec -> u1_sl_typ_5_9 ) ps_dec -> u1_first_pb_nal_in_pic = 0 ; } ps_dec -> u1_num_ref_idx_lx_active_prev = ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] ; if ( uc_refIdxReFlagL0 ) { WORD8 ret ; ps_dec -> ps_ref_pic_buf_lx [ 0 ] = ps_dec -> ps_dpb_mgr -> ps_mod_dpb [ 0 ] ; ret = ih264d_ref_idx_reordering ( ps_dec , 0 ) ; if ( ret == - 1 ) return ERROR_REFIDX_ORDER_T ; ps_dec -> ps_ref_pic_buf_lx [ 0 ] = ps_dec -> ps_dpb_mgr -> ps_mod_dpb [ 0 ] ; } else ps_dec -> ps_ref_pic_buf_lx [ 0 ] = ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] ; } { void * * pui_map_ref_idx_to_poc_lx0 , * * pui_map_ref_idx_to_poc_lx1 ; WORD8 idx ; struct pic_buffer_t * ps_pic ; pui_map_ref_idx_to_poc_lx0 = ps_dec -> ppv_map_ref_idx_to_poc + FRM_LIST_L0 ; pui_map_ref_idx_to_poc_lx0 [ 0 ] = 0 ; pui_map_ref_idx_to_poc_lx0 ++ ; for ( idx = 0 ; idx < ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] ; idx ++ ) { ps_pic = ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ idx ] ; pui_map_ref_idx_to_poc_lx0 [ idx ] = ( ps_pic -> pu1_buf1 ) ; } pui_map_ref_idx_to_poc_lx1 = ps_dec -> ppv_map_ref_idx_to_poc + FRM_LIST_L1 ; pui_map_ref_idx_to_poc_lx1 [ 0 ] = 0 ; if ( u1_mbaff ) { void * * ppv_map_ref_idx_to_poc_lx_t , * * ppv_map_ref_idx_to_poc_lx_b ; void * * ppv_map_ref_idx_to_poc_lx_t1 , * * ppv_map_ref_idx_to_poc_lx_b1 ; ppv_map_ref_idx_to_poc_lx_t = ps_dec -> ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L0 ; ppv_map_ref_idx_to_poc_lx_b = ps_dec -> ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L0 ; ppv_map_ref_idx_to_poc_lx_t [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx_t ++ ; ppv_map_ref_idx_to_poc_lx_b [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx_b ++ ; idx = 0 ; for ( idx = 0 ; idx < ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] ; idx ++ ) { ps_pic = ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ idx ] ; ppv_map_ref_idx_to_poc_lx_t [ 0 ] = ( ps_pic -> pu1_buf1 ) ; ppv_map_ref_idx_to_poc_lx_b [ 1 ] = ( ps_pic -> pu1_buf1 ) ; ppv_map_ref_idx_to_poc_lx_b [ 0 ] = ( ps_pic -> pu1_buf1 ) + 1 ; ppv_map_ref_idx_to_poc_lx_t [ 1 ] = ( ps_pic -> pu1_buf1 ) + 1 ; ppv_map_ref_idx_to_poc_lx_t += 2 ; ppv_map_ref_idx_to_poc_lx_b += 2 ; } ppv_map_ref_idx_to_poc_lx_t1 = ps_dec -> ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L1 ; ppv_map_ref_idx_to_poc_lx_t1 [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx_b1 = ps_dec -> ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L1 ; ppv_map_ref_idx_to_poc_lx_b1 [ 0 ] = 0 ; } if ( ps_dec -> u4_num_cores >= 3 ) { WORD32 num_entries ; WORD32 size ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; memcpy ( ( void * ) ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc , ps_dec -> ppv_map_ref_idx_to_poc , size ) ; } } if ( ps_pps -> u1_wted_pred_flag ) { ret = ih264d_parse_pred_weight_table ( ps_cur_slice , ps_bitstrm ) ; if ( ret != OK ) return ret ; ih264d_form_pred_weight_matrix ( ps_dec ) ; ps_dec -> pu4_wt_ofsts = ps_dec -> pu4_wts_ofsts_mat ; } else { ps_dec -> ps_cur_slice -> u2_log2Y_crwd = 0 ; ps_dec -> pu4_wt_ofsts = ps_dec -> pu4_wts_ofsts_mat ; } ps_dec -> ps_parse_cur_slice -> u2_log2Y_crwd = ps_dec -> ps_cur_slice -> u2_log2Y_crwd ; if ( u1_mbaff && ( u1_field_pic_flag == 0 ) ) { ih264d_convert_frm_mbaff_list ( ps_dec ) ; } if ( ps_cur_slice -> u1_nal_ref_idc != 0 ) { if ( ! ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read ) <S2SV_StartBug> ps_dec -> u4_bitoffset = ih264d_read_mmco_commands ( ps_dec ) ; <S2SV_EndBug> else ps_bitstrm -> u4_ofst += ps_dec -> u4_bitoffset ; } if ( ps_pps -> u1_entropy_coding_mode == CABAC ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_CABAC_INIT_IDC ) { return ERROR_INV_SLICE_HDR_T ; } ps_cur_slice -> u1_cabac_init_idc = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>cabac_init_idc\" , ps_cur_slice -> u1_cabac_init_idc ) ; } i_temp = ps_pps -> u1_pic_init_qp + ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( ( i_temp < 0 ) || ( i_temp > 51 ) ) { return ERROR_INV_RANGE_QP_T ; } ps_cur_slice -> u1_slice_qp = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_qp_delta\" , ( WORD8 ) ( ps_cur_slice -> u1_slice_qp - ps_pps -> u1_pic_init_qp ) ) ; if ( ps_pps -> u1_deblocking_filter_parameters_present_flag == 1 ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > SLICE_BOUNDARY_DBLK_DISABLED ) { return ERROR_INV_SLICE_HDR_T ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>disable_deblocking_filter_idc\" , u4_temp ) ; ps_cur_slice -> u1_disable_dblk_filter_idc = u4_temp ; if ( u4_temp != 1 ) { i_temp = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) << 1 ; if ( ( MIN_DBLK_FIL_OFF > i_temp ) || ( i_temp > MAX_DBLK_FIL_OFF ) ) { return ERROR_INV_SLICE_HDR_T ; } ps_cur_slice -> i1_slice_alpha_c0_offset = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_alpha_c0_offset_div2\" , ps_cur_slice -> i1_slice_alpha_c0_offset >> 1 ) ; i_temp = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) << 1 ; if ( ( MIN_DBLK_FIL_OFF > i_temp ) || ( i_temp > MAX_DBLK_FIL_OFF ) ) { return ERROR_INV_SLICE_HDR_T ; } ps_cur_slice -> i1_slice_beta_offset = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_beta_offset_div2\" , ps_cur_slice -> i1_slice_beta_offset >> 1 ) ; } else { ps_cur_slice -> i1_slice_alpha_c0_offset = 0 ; ps_cur_slice -> i1_slice_beta_offset = 0 ; } } else { ps_cur_slice -> u1_disable_dblk_filter_idc = 0 ; ps_cur_slice -> i1_slice_alpha_c0_offset = 0 ; ps_cur_slice -> i1_slice_beta_offset = 0 ; } ps_dec -> u1_slice_header_done = 2 ; if ( ps_pps -> u1_entropy_coding_mode ) { SWITCHOFFTRACE ; SWITCHONTRACECABAC ; ps_dec -> pf_parse_inter_slice = ih264d_parse_inter_slice_data_cabac ; ps_dec -> pf_parse_inter_mb = ih264d_parse_pmb_cabac ; ih264d_init_cabac_contexts ( P_SLICE , ps_dec ) ; if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag ) ps_dec -> pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff ; else ps_dec -> pf_get_mb_info = ih264d_get_mb_info_cabac_nonmbaff ; } else { SWITCHONTRACE ; SWITCHOFFTRACECABAC ; ps_dec -> pf_parse_inter_slice = ih264d_parse_inter_slice_data_cavlc ; ps_dec -> pf_parse_inter_mb = ih264d_parse_pmb_cavlc ; if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag ) { ps_dec -> pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff ; } else ps_dec -> pf_get_mb_info = ih264d_get_mb_info_cavlc_nonmbaff ; } ps_dec -> u1_B = 0 ; ps_dec -> pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb ; ret = ps_dec -> pf_parse_inter_slice ( ps_dec , ps_cur_slice , u2_first_mb_in_slice ) ; if ( ret != OK ) return ret ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> u1_dpb_commands_read ) { i_temp = ih264d_read_mmco_commands ( ps_dec ) ; if ( i_temp < 0 ) { return ERROR_DBP_MANAGER_T ; } <S2SV_ModStart> -> u4_bitoffset = i_temp ; } <S2SV_ModEnd> else ps_bitstrm ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12248\n\n```\nCWE-125 static mrb_value fiber_switch ( mrb_state * mrb , mrb_value self , mrb_int len , const mrb_value * a , mrb_bool resume , mrb_bool vmexec ) { struct mrb_context * c = fiber_check ( mrb , self ) ; struct mrb_context * old_c = mrb -> c ; <S2SV_StartBug> mrb_value value ; <S2SV_EndBug> <S2SV_StartBug> fiber_check_cfunc ( mrb , c ) ; <S2SV_EndBug> <S2SV_StartBug> if ( resume && c -> status == MRB_FIBER_TRANSFERRED ) { <S2SV_EndBug> mrb_raise ( mrb , E_FIBER_ERROR , \"resuming<S2SV_blank>transferred<S2SV_blank>fiber\" ) ; } <S2SV_StartBug> if ( c -> status == MRB_FIBER_RUNNING || c -> status == MRB_FIBER_RESUMED ) { <S2SV_EndBug> mrb_raise ( mrb , E_FIBER_ERROR , \"double<S2SV_blank>resume<S2SV_blank>(fib)\" ) ; } <S2SV_StartBug> if ( c -> status == MRB_FIBER_TERMINATED ) { <S2SV_EndBug> mrb_raise ( mrb , E_FIBER_ERROR , \"resuming<S2SV_blank>dead<S2SV_blank>fiber\" ) ; } <S2SV_StartBug> mrb -> c -> status = resume ? MRB_FIBER_RESUMED : MRB_FIBER_TRANSFERRED ; <S2SV_EndBug> c -> prev = resume ? mrb -> c : ( c -> prev ? c -> prev : mrb -> root_c ) ; <S2SV_StartBug> if ( c -> status == MRB_FIBER_CREATED ) { <S2SV_EndBug> mrb_value * b , * e ; <S2SV_StartBug> if ( len >= c -> stend - c -> stack ) { <S2SV_EndBug> mrb_raise ( mrb , E_FIBER_ERROR , \"too<S2SV_blank>many<S2SV_blank>arguments<S2SV_blank>to<S2SV_blank>fiber\" ) ; } b = c -> stack + 1 ; e = b + len ; while ( b < e ) { * b ++ = * a ++ ; } c -> cibase -> argc = ( int ) len ; value = c -> stack [ 0 ] = MRB_PROC_ENV ( c -> ci -> proc ) -> stack [ 0 ] ; } else { value = fiber_result ( mrb , a , len ) ; } <S2SV_StartBug> fiber_switch_context ( mrb , c ) ; <S2SV_EndBug> if ( vmexec ) { c -> vmexec = TRUE ; value = mrb_vm_exec ( mrb , c -> ci [ - 1 ] . proc , c -> ci -> pc ) ; mrb -> c = old_c ; } else { MARK_CONTEXT_MODIFY ( c ) ; } return value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> c ; enum mrb_fiber_state status ; <S2SV_ModStart> , c ) ; status = c -> status <S2SV_ModStart> ( resume && <S2SV_ModEnd> status == MRB_FIBER_TRANSFERRED <S2SV_ModStart> } if ( <S2SV_ModEnd> status == MRB_FIBER_RUNNING <S2SV_ModStart> == MRB_FIBER_RUNNING || <S2SV_ModEnd> status == MRB_FIBER_RESUMED <S2SV_ModStart> } if ( <S2SV_ModEnd> status == MRB_FIBER_TERMINATED <S2SV_ModStart> ) ; } old_c <S2SV_ModEnd> -> status = <S2SV_ModStart> root_c ) ; fiber_switch_context ( mrb , c ) ; if ( <S2SV_ModEnd> status == MRB_FIBER_CREATED <S2SV_ModStart> * e ; mrb_stack_extend ( mrb , len + 2 ) ; <S2SV_ModEnd> b = c <S2SV_ModStart> ) ; } <S2SV_ModEnd> if ( vmexec\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 DhcpOption * dhcpGetOption ( const DhcpMessage * message , size_t length , uint8_t optionCode ) { <S2SV_StartBug> uint_t i ; <S2SV_EndBug> DhcpOption * option ; <S2SV_StartBug> if ( length < sizeof ( DhcpMessage ) ) <S2SV_EndBug> <S2SV_StartBug> return NULL ; <S2SV_EndBug> length -= sizeof ( DhcpMessage ) ; for ( i = 0 ; i < length ; i ++ ) { option = ( DhcpOption * ) ( message -> options + i ) ; if ( option -> code == DHCP_OPT_PAD ) <S2SV_StartBug> continue ; <S2SV_EndBug> <S2SV_StartBug> if ( option -> code == DHCP_OPT_END ) <S2SV_EndBug> break ; <S2SV_StartBug> if ( ( i + 1 ) >= length || ( i + 1 + option -> length ) >= length ) <S2SV_EndBug> break ; if ( option -> code == optionCode ) return option ; i += option -> length + 1 ; } <S2SV_StartBug> return NULL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> optionCode ) { size_t <S2SV_ModEnd> i ; DhcpOption <S2SV_ModStart> if ( length >= <S2SV_ModEnd> sizeof ( DhcpMessage <S2SV_ModStart> DhcpMessage ) ) { <S2SV_ModEnd> length -= sizeof <S2SV_ModStart> == DHCP_OPT_PAD ) { } else <S2SV_ModEnd> if ( option <S2SV_ModStart> code == DHCP_OPT_END ) { break ; } else { if ( ( i + 1 ) >= length <S2SV_ModStart> ( i + sizeof ( DhcpOption ) <S2SV_ModEnd> + option -> <S2SV_ModStart> -> length ) > <S2SV_ModEnd> length ) break <S2SV_ModStart> 1 ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2699\n\n```\nCWE-000 static struct sk_buff * udp6_ufo_fragment ( struct sk_buff * skb , u32 features ) { struct sk_buff * segs = ERR_PTR ( - EINVAL ) ; unsigned int mss ; unsigned int unfrag_ip6hlen , unfrag_len ; struct frag_hdr * fptr ; u8 * mac_start , * prevhdr ; u8 nexthdr ; u8 frag_hdr_sz = sizeof ( struct frag_hdr ) ; int offset ; __wsum csum ; mss = skb_shinfo ( skb ) -> gso_size ; if ( unlikely ( skb -> len <= mss ) ) goto out ; if ( skb_gso_ok ( skb , features | NETIF_F_GSO_ROBUST ) ) { int type = skb_shinfo ( skb ) -> gso_type ; if ( unlikely ( type & ~ ( SKB_GSO_UDP | SKB_GSO_DODGY ) || ! ( type & ( SKB_GSO_UDP ) ) ) ) goto out ; skb_shinfo ( skb ) -> gso_segs = DIV_ROUND_UP ( skb -> len , mss ) ; segs = NULL ; goto out ; } offset = skb_checksum_start_offset ( skb ) ; csum = skb_checksum ( skb , offset , skb -> len - offset , 0 ) ; offset += skb -> csum_offset ; * ( __sum16 * ) ( skb -> data + offset ) = csum_fold ( csum ) ; skb -> ip_summed = CHECKSUM_NONE ; if ( ( skb_mac_header ( skb ) < skb -> head + frag_hdr_sz ) && pskb_expand_head ( skb , frag_hdr_sz , 0 , GFP_ATOMIC ) ) goto out ; unfrag_ip6hlen = ip6_find_1stfragopt ( skb , & prevhdr ) ; nexthdr = * prevhdr ; * prevhdr = NEXTHDR_FRAGMENT ; unfrag_len = skb_network_header ( skb ) - skb_mac_header ( skb ) + unfrag_ip6hlen ; mac_start = skb_mac_header ( skb ) ; memmove ( mac_start - frag_hdr_sz , mac_start , unfrag_len ) ; skb -> mac_header -= frag_hdr_sz ; skb -> network_header -= frag_hdr_sz ; fptr = ( struct frag_hdr * ) ( skb_network_header ( skb ) + unfrag_ip6hlen ) ; fptr -> nexthdr = nexthdr ; fptr -> reserved = 0 ; <S2SV_StartBug> ipv6_select_ident ( fptr ) ; <S2SV_EndBug> segs = skb_segment ( skb , features ) ; out : return segs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ipv6_select_ident ( fptr , ( struct rt6_info * ) skb_dst ( skb )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-26247\n\n```\nCWE-611 void init_xml_schema ( ) { VALUE nokogiri = rb_define_module ( \"Nokogiri\" ) ; VALUE xml = rb_define_module_under ( nokogiri , \"XML\" ) ; VALUE klass = rb_define_class_under ( xml , \"Schema\" , rb_cObject ) ; cNokogiriXmlSchema = klass ; <S2SV_StartBug> rb_define_singleton_method ( klass , \"read_memory\" , read_memory , 1 ) ; <S2SV_EndBug> <S2SV_StartBug> rb_define_singleton_method ( klass , \"from_document\" , from_document , 1 ) ; <S2SV_EndBug> rb_define_private_method ( klass , \"validate_document\" , validate_document , 1 ) ; rb_define_private_method ( klass , \"validate_file\" , validate_file , 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , read_memory , - <S2SV_ModStart> , from_document , -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13134\n\n```\nCWE-401 static Image * ReadVIFFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define VFF_CM_genericRGB 15 # define VFF_CM_ntscRGB 1 # define VFF_CM_NONE 0 # define VFF_DEP_DECORDER 0x4 # define VFF_DEP_NSORDER 0x8 # define VFF_DES_RAW 0 # define VFF_LOC_IMPLICIT 1 # define VFF_MAPTYP_NONE 0 # define VFF_MAPTYP_1_BYTE 1 # define VFF_MAPTYP_2_BYTE 2 # define VFF_MAPTYP_4_BYTE 4 # define VFF_MAPTYP_FLOAT 5 # define VFF_MAPTYP_DOUBLE 7 # define VFF_MS_NONE 0 # define VFF_MS_ONEPERBAND 1 # define VFF_MS_SHARED 3 # define VFF_TYP_BIT 0 # define VFF_TYP_1_BYTE 1 # define VFF_TYP_2_BYTE 2 # define VFF_TYP_4_BYTE 4 # define VFF_TYP_FLOAT 5 # define VFF_TYP_DOUBLE 9 typedef struct _ViffInfo { unsigned char identifier , file_type , release , version , machine_dependency , reserve [ 3 ] ; char comment [ 512 ] ; unsigned int rows , columns , subrows ; int x_offset , y_offset ; float x_bits_per_pixel , y_bits_per_pixel ; unsigned int location_type , location_dimension , number_of_images , number_data_bands , data_storage_type , data_encode_scheme , map_scheme , map_storage_type , map_rows , map_columns , map_subrows , map_enable , maps_per_cycle , color_space_model ; } ViffInfo ; double min_value , scale_factor , value ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bytes_per_pixel , max_packets , quantum ; ssize_t count , y ; unsigned char * pixels ; unsigned long lsb_first ; ViffInfo viff_info ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 1 , & viff_info . identifier ) ; do { if ( ( count != 1 ) || ( ( unsigned char ) viff_info . identifier != 0xab ) ) ThrowReaderException ( CorruptImageError , \"NotAVIFFImage\" ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . file_type ) , & viff_info . file_type ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . release ) , & viff_info . release ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . version ) , & viff_info . version ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . machine_dependency ) , & viff_info . machine_dependency ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . reserve ) , viff_info . reserve ) ; count = ReadBlob ( image , 512 , ( unsigned char * ) viff_info . comment ) ; if ( count != 512 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_info . comment [ 511 ] = '\\\\0' ; if ( strlen ( viff_info . comment ) > 4 ) ( void ) SetImageProperty ( image , \"comment\" , viff_info . comment , exception ) ; if ( ( viff_info . machine_dependency == VFF_DEP_DECORDER ) || ( viff_info . machine_dependency == VFF_DEP_NSORDER ) ) image -> endian = LSBEndian ; else image -> endian = MSBEndian ; viff_info . rows = ReadBlobLong ( image ) ; viff_info . columns = ReadBlobLong ( image ) ; viff_info . subrows = ReadBlobLong ( image ) ; viff_info . x_offset = ReadBlobSignedLong ( image ) ; viff_info . y_offset = ReadBlobSignedLong ( image ) ; viff_info . x_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . y_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . location_type = ReadBlobLong ( image ) ; viff_info . location_dimension = ReadBlobLong ( image ) ; viff_info . number_of_images = ReadBlobLong ( image ) ; viff_info . number_data_bands = ReadBlobLong ( image ) ; viff_info . data_storage_type = ReadBlobLong ( image ) ; viff_info . data_encode_scheme = ReadBlobLong ( image ) ; viff_info . map_scheme = ReadBlobLong ( image ) ; viff_info . map_storage_type = ReadBlobLong ( image ) ; viff_info . map_rows = ReadBlobLong ( image ) ; viff_info . map_columns = ReadBlobLong ( image ) ; viff_info . map_subrows = ReadBlobLong ( image ) ; viff_info . map_enable = ReadBlobLong ( image ) ; viff_info . maps_per_cycle = ReadBlobLong ( image ) ; viff_info . color_space_model = ReadBlobLong ( image ) ; for ( i = 0 ; i < 420 ; i ++ ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; number_pixels = ( MagickSizeType ) viff_info . columns * viff_info . rows ; if ( number_pixels > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( number_pixels != ( size_t ) number_pixels ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( number_pixels == 0 ) ThrowReaderException ( CoderError , \"ImageColumnOrRowSizeIsNotSupported\" ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; image -> depth = viff_info . x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH ; image -> alpha_trait = viff_info . number_data_bands == 4 ? BlendPixelTrait : UndefinedPixelTrait ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; ( void ) SetImageBackgroundColor ( image , exception ) ; if ( ( viff_info . number_data_bands < 1 ) || ( viff_info . number_data_bands > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( viff_info . data_storage_type != VFF_TYP_BIT ) && ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_2_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_4_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_FLOAT ) && ( viff_info . data_storage_type != VFF_TYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"DataStorageTypeIsNotSupported\" ) ; if ( viff_info . data_encode_scheme != VFF_DES_RAW ) ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; if ( ( viff_info . map_storage_type != VFF_MAPTYP_NONE ) && ( viff_info . map_storage_type != VFF_MAPTYP_1_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_2_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_4_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_FLOAT ) && ( viff_info . map_storage_type != VFF_MAPTYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"MapStorageTypeIsNotSupported\" ) ; if ( ( viff_info . color_space_model != VFF_CM_NONE ) && ( viff_info . color_space_model != VFF_CM_ntscRGB ) && ( viff_info . color_space_model != VFF_CM_genericRGB ) ) ThrowReaderException ( CoderError , \"ColorspaceModelIsNotSupported\" ) ; if ( viff_info . location_type != VFF_LOC_IMPLICIT ) ThrowReaderException ( CoderError , \"LocationTypeIsNotSupported\" ) ; if ( viff_info . number_of_images != 1 ) ThrowReaderException ( CoderError , \"NumberOfImagesIsNotSupported\" ) ; if ( viff_info . map_rows == 0 ) viff_info . map_scheme = VFF_MS_NONE ; switch ( ( int ) viff_info . map_scheme ) { case VFF_MS_NONE : { if ( viff_info . number_data_bands < 3 ) { if ( viff_info . data_storage_type == VFF_TYP_BIT ) image -> colors = 2 ; else if ( viff_info . data_storage_type == VFF_MAPTYP_1_BYTE ) image -> colors = 256UL ; else image -> colors = image -> depth <= 8 ? 256UL : 65536UL ; status = AcquireImageColormap ( image , image -> colors , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case VFF_MS_ONEPERBAND : case VFF_MS_SHARED : { unsigned char * viff_colormap ; switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_1_BYTE : bytes_per_pixel = 1 ; break ; case VFF_MAPTYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_MAPTYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } image -> colors = viff_info . map_columns ; if ( ( MagickSizeType ) ( viff_info . map_rows * image -> colors ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( MagickSizeType ) viff_info . map_rows > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ( MagickSizeType ) viff_info . map_rows > ( viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ; if ( viff_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , bytes_per_pixel * image -> colors * viff_info . map_rows , viff_colormap ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : { MSBOrderShort ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } case VFF_MAPTYP_4_BYTE : case VFF_MAPTYP_FLOAT : { MSBOrderLong ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } default : break ; } for ( i = 0 ; i < ( ssize_t ) ( viff_info . map_rows * image -> colors ) ; i ++ ) { switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : value = 1.0 * ( ( short * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_4_BYTE : value = 1.0 * ( ( int * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_FLOAT : value = ( ( float * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_DOUBLE : value = ( ( double * ) viff_colormap ) [ i ] ; break ; default : value = 1.0 * viff_colormap [ i ] ; break ; } if ( i < ( ssize_t ) image -> colors ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; } else if ( i < ( ssize_t ) ( 2 * image -> colors ) ) image -> colormap [ i % image -> colors ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; else if ( i < ( ssize_t ) ( 3 * image -> colors ) ) image -> colormap [ i % image -> colors ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) value ) ; } viff_colormap = ( unsigned char * ) RelinquishMagickMemory ( viff_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { image -> colors = 2 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; image -> colorspace = GRAYColorspace ; } switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_TYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_TYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_TYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } if ( viff_info . data_storage_type == VFF_TYP_BIT ) { if ( HeapOverflowSanityCheck ( ( image -> columns + 7UL ) >> 3UL , image -> rows ) != MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; } else { if ( HeapOverflowSanityCheck ( ( size_t ) number_pixels , viff_info . number_data_bands ) != MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; max_packets = ( size_t ) ( number_pixels * viff_info . number_data_bands ) ; } if ( ( MagickSizeType ) ( bytes_per_pixel * max_packets ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; pixels = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( number_pixels , max_packets ) , bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( pixels , 0 , MagickMax ( number_pixels , max_packets ) * bytes_per_pixel * sizeof ( * pixels ) ) ; count = ReadBlob ( image , bytes_per_pixel * max_packets , pixels ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : { MSBOrderShort ( pixels , bytes_per_pixel * max_packets ) ; break ; } case VFF_TYP_4_BYTE : case VFF_TYP_FLOAT : { MSBOrderLong ( pixels , bytes_per_pixel * max_packets ) ; break ; } default : break ; } min_value = 0.0 ; scale_factor = 1.0 ; if ( ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . map_scheme == VFF_MS_NONE ) ) { double max_value ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ 0 ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ 0 ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ 0 ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ 0 ] ; break ; default : value = 1.0 * pixels [ 0 ] ; break ; } max_value = value ; min_value = value ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( value > max_value ) max_value = value ; else if ( value < min_value ) min_value = value ; } if ( ( min_value == 0 ) && ( max_value == 0 ) ) scale_factor = 0 ; else if ( min_value == max_value ) { scale_factor = ( double ) QuantumRange / min_value ; min_value = 0 ; } else scale_factor = ( double ) QuantumRange / ( max_value - min_value ) ; } p = ( unsigned char * ) pixels ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( viff_info . map_scheme == VFF_MS_NONE ) { value = ( value - min_value ) * scale_factor ; if ( value > QuantumRange ) value = QuantumRange ; else if ( value < 0 ) value = 0 ; } * p = ( unsigned char ) ( ( Quantum ) value ) ; p ++ ; } p = ( unsigned char * ) pixels ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) ( image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( int ) ( image -> columns % 8 ) ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else if ( image -> storage_class == PseudoClass ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else { number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + number_pixels ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 * number_pixels ) ) , q ) ; if ( image -> colors != 0 ) { ssize_t index ; index = ( ssize_t ) GetPixelRed ( image , q ) ; SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . red ) , q ) ; index = ( ssize_t ) GetPixelGreen ( image , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . green ) , q ) ; index = ( ssize_t ) GetPixelBlue ( image , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . blue ) , q ) ; } SetPixelAlpha ( image , image -> alpha_trait != UndefinedPixelTrait ? ScaleCharToQuantum ( * ( p + number_pixels * 3 ) ) : OpaqueAlpha , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; count = ReadBlob ( image , 1 , & viff_info . identifier ) ; if ( ( count == 1 ) && ( viff_info . identifier == 0xab ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { <S2SV_StartBug> image = DestroyImageList ( image ) ; <S2SV_EndBug> return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { status = MagickFalse ; break <S2SV_ModEnd> ; } image\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int jas_seq2d_output ( jas_matrix_t * matrix , FILE * out ) { # define MAXLINELEN 80 <S2SV_StartBug> int i ; <S2SV_EndBug> int j ; jas_seqent_t x ; char buf [ MAXLINELEN + 1 ] ; char sbuf [ MAXLINELEN + 1 ] ; int n ; fprintf ( out , \"%\" PRIiFAST32 \"<S2SV_blank>%\" PRIiFAST32 \"\\\\n\" , jas_seq2d_xstart ( matrix ) , jas_seq2d_ystart ( matrix ) ) ; fprintf ( out , \"%\" PRIiFAST32 \"<S2SV_blank>%\" PRIiFAST32 \"\\\\n\" , jas_matrix_numcols ( matrix ) , jas_matrix_numrows ( matrix ) ) ; buf [ 0 ] = '\\\\0' ; for ( i = 0 ; i < jas_matrix_numrows ( matrix ) ; ++ i ) { for ( j = 0 ; j < jas_matrix_numcols ( matrix ) ; ++ j ) { x = jas_matrix_get ( matrix , i , j ) ; sprintf ( sbuf , \"%s%4ld\" , ( strlen ( buf ) > 0 ) ? \"<S2SV_blank>\" : \"\" , JAS_CAST ( long , x ) ) ; n = JAS_CAST ( int , strlen ( buf ) ) ; if ( n + JAS_CAST ( int , strlen ( sbuf ) ) > MAXLINELEN ) { fputs ( buf , out ) ; fputs ( \"\\\\n\" , out ) ; buf [ 0 ] = '\\\\0' ; } strcat ( buf , sbuf ) ; if ( j == jas_matrix_numcols ( matrix ) - 1 ) { fputs ( buf , out ) ; fputs ( \"\\\\n\" , out ) ; buf [ 0 ] = '\\\\0' ; } } } fputs ( buf , out ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> define MAXLINELEN 80 jas_matind_t i ; jas_matind_t <S2SV_ModEnd> j ; jas_seqent_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static MB_PREDICTION_MODE read_intra_mode_y ( VP9_COMMON * cm , vp9_reader * r , <S2SV_EndBug> int size_group ) { <S2SV_StartBug> const MB_PREDICTION_MODE y_mode = read_intra_mode ( r , <S2SV_EndBug> <S2SV_StartBug> cm -> fc . y_mode_prob [ size_group ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! cm -> frame_parallel_decoding_mode ) <S2SV_EndBug> ++ cm -> counts . y_mode [ size_group ] [ y_mode ] ; return y_mode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static PREDICTION_MODE <S2SV_ModEnd> read_intra_mode_y ( VP9_COMMON <S2SV_ModStart> * cm , MACROBLOCKD * xd , vpx_reader <S2SV_ModEnd> * r , <S2SV_ModStart> ) { const PREDICTION_MODE <S2SV_ModEnd> y_mode = read_intra_mode <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> y_mode_prob [ size_group <S2SV_ModStart> ] ) ; FRAME_COUNTS * counts = xd -> counts ; if ( counts ) ++ counts -> <S2SV_ModEnd> y_mode [ size_group\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8830\n\n```\nCWE-000 static ssize_t aio_setup_single_vector ( struct kiocb * kiocb , int rw , char __user * buf , unsigned long * nr_segs , size_t len , <S2SV_StartBug> struct iovec * iovec ) <S2SV_EndBug> { if ( unlikely ( ! access_ok ( ! rw , buf , len ) ) ) return - EFAULT ; iovec -> iov_base = buf ; iovec -> iov_len = len ; * nr_segs = 1 ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iovec * iovec , struct iov_iter * iter ) { if ( len > MAX_RW_COUNT ) len = MAX_RW_COUNT ; <S2SV_ModEnd> if ( unlikely <S2SV_ModStart> = 1 ; iov_iter_init ( iter , rw , iovec , * nr_segs , len ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1858\n\n```\nCWE-264 static struct task_struct * copy_process ( unsigned long clone_flags , unsigned long stack_start , unsigned long stack_size , int __user * child_tidptr , struct pid * pid , int trace ) { int retval ; struct task_struct * p ; if ( ( clone_flags & ( CLONE_NEWNS | CLONE_FS ) ) == ( CLONE_NEWNS | CLONE_FS ) ) return ERR_PTR ( - EINVAL ) ; <S2SV_StartBug> if ( ( clone_flags & CLONE_THREAD ) && ! ( clone_flags & CLONE_SIGHAND ) ) <S2SV_EndBug> return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_SIGHAND ) && ! ( clone_flags & CLONE_VM ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_PARENT ) && current -> signal -> flags & SIGNAL_UNKILLABLE ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & ( CLONE_VM | CLONE_NEWPID ) ) && ( task_active_pid_ns ( current ) != current -> nsproxy -> pid_ns ) ) return ERR_PTR ( - EINVAL ) ; retval = security_task_create ( clone_flags ) ; if ( retval ) goto fork_out ; retval = - ENOMEM ; p = dup_task_struct ( current ) ; if ( ! p ) goto fork_out ; ftrace_graph_init_task ( p ) ; get_seccomp_filter ( p ) ; rt_mutex_init_task ( p ) ; # ifdef CONFIG_PROVE_LOCKING DEBUG_LOCKS_WARN_ON ( ! p -> hardirqs_enabled ) ; DEBUG_LOCKS_WARN_ON ( ! p -> softirqs_enabled ) ; # endif retval = - EAGAIN ; if ( atomic_read ( & p -> real_cred -> user -> processes ) >= task_rlimit ( p , RLIMIT_NPROC ) ) { if ( ! capable ( CAP_SYS_ADMIN ) && ! capable ( CAP_SYS_RESOURCE ) && p -> real_cred -> user != INIT_USER ) goto bad_fork_free ; } current -> flags &= ~ PF_NPROC_EXCEEDED ; retval = copy_creds ( p , clone_flags ) ; if ( retval < 0 ) goto bad_fork_free ; retval = - EAGAIN ; if ( nr_threads >= max_threads ) goto bad_fork_cleanup_count ; if ( ! try_module_get ( task_thread_info ( p ) -> exec_domain -> module ) ) goto bad_fork_cleanup_count ; p -> did_exec = 0 ; delayacct_tsk_init ( p ) ; copy_flags ( clone_flags , p ) ; INIT_LIST_HEAD ( & p -> children ) ; INIT_LIST_HEAD ( & p -> sibling ) ; rcu_copy_process ( p ) ; p -> vfork_done = NULL ; spin_lock_init ( & p -> alloc_lock ) ; init_sigpending ( & p -> pending ) ; p -> utime = p -> stime = p -> gtime = 0 ; p -> utimescaled = p -> stimescaled = 0 ; # ifndef CONFIG_VIRT_CPU_ACCOUNTING p -> prev_cputime . utime = p -> prev_cputime . stime = 0 ; # endif # ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN seqlock_init ( & p -> vtime_seqlock ) ; p -> vtime_snap = 0 ; p -> vtime_snap_whence = VTIME_SLEEPING ; # endif # if defined ( SPLIT_RSS_COUNTING ) memset ( & p -> rss_stat , 0 , sizeof ( p -> rss_stat ) ) ; # endif p -> default_timer_slack_ns = current -> timer_slack_ns ; task_io_accounting_init ( & p -> ioac ) ; acct_clear_integrals ( p ) ; posix_cpu_timers_init ( p ) ; do_posix_clock_monotonic_gettime ( & p -> start_time ) ; p -> real_start_time = p -> start_time ; monotonic_to_bootbased ( & p -> real_start_time ) ; p -> io_context = NULL ; p -> audit_context = NULL ; if ( clone_flags & CLONE_THREAD ) threadgroup_change_begin ( current ) ; cgroup_fork ( p ) ; # ifdef CONFIG_NUMA p -> mempolicy = mpol_dup ( p -> mempolicy ) ; if ( IS_ERR ( p -> mempolicy ) ) { retval = PTR_ERR ( p -> mempolicy ) ; p -> mempolicy = NULL ; goto bad_fork_cleanup_cgroup ; } mpol_fix_fork_child_flag ( p ) ; # endif # ifdef CONFIG_CPUSETS p -> cpuset_mem_spread_rotor = NUMA_NO_NODE ; p -> cpuset_slab_spread_rotor = NUMA_NO_NODE ; seqcount_init ( & p -> mems_allowed_seq ) ; # endif # ifdef CONFIG_TRACE_IRQFLAGS p -> irq_events = 0 ; p -> hardirqs_enabled = 0 ; p -> hardirq_enable_ip = 0 ; p -> hardirq_enable_event = 0 ; p -> hardirq_disable_ip = _THIS_IP_ ; p -> hardirq_disable_event = 0 ; p -> softirqs_enabled = 1 ; p -> softirq_enable_ip = _THIS_IP_ ; p -> softirq_enable_event = 0 ; p -> softirq_disable_ip = 0 ; p -> softirq_disable_event = 0 ; p -> hardirq_context = 0 ; p -> softirq_context = 0 ; # endif # ifdef CONFIG_LOCKDEP p -> lockdep_depth = 0 ; p -> curr_chain_key = 0 ; p -> lockdep_recursion = 0 ; # endif # ifdef CONFIG_DEBUG_MUTEXES p -> blocked_on = NULL ; # endif # ifdef CONFIG_MEMCG p -> memcg_batch . do_batch = 0 ; p -> memcg_batch . memcg = NULL ; # endif sched_fork ( p ) ; retval = perf_event_init_task ( p ) ; if ( retval ) goto bad_fork_cleanup_policy ; retval = audit_alloc ( p ) ; if ( retval ) goto bad_fork_cleanup_policy ; retval = copy_semundo ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_audit ; retval = copy_files ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_semundo ; retval = copy_fs ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_files ; retval = copy_sighand ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_fs ; retval = copy_signal ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_sighand ; retval = copy_mm ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_signal ; retval = copy_namespaces ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_mm ; retval = copy_io ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_namespaces ; retval = copy_thread ( clone_flags , stack_start , stack_size , p ) ; if ( retval ) goto bad_fork_cleanup_io ; if ( pid != & init_struct_pid ) { retval = - ENOMEM ; pid = alloc_pid ( p -> nsproxy -> pid_ns ) ; if ( ! pid ) goto bad_fork_cleanup_io ; } p -> pid = pid_nr ( pid ) ; p -> tgid = p -> pid ; if ( clone_flags & CLONE_THREAD ) p -> tgid = current -> tgid ; p -> set_child_tid = ( clone_flags & CLONE_CHILD_SETTID ) ? child_tidptr : NULL ; p -> clear_child_tid = ( clone_flags & CLONE_CHILD_CLEARTID ) ? child_tidptr : NULL ; # ifdef CONFIG_BLOCK p -> plug = NULL ; # endif # ifdef CONFIG_FUTEX p -> robust_list = NULL ; # ifdef CONFIG_COMPAT p -> compat_robust_list = NULL ; # endif INIT_LIST_HEAD ( & p -> pi_state_list ) ; p -> pi_state_cache = NULL ; # endif uprobe_copy_process ( p ) ; if ( ( clone_flags & ( CLONE_VM | CLONE_VFORK ) ) == CLONE_VM ) p -> sas_ss_sp = p -> sas_ss_size = 0 ; user_disable_single_step ( p ) ; clear_tsk_thread_flag ( p , TIF_SYSCALL_TRACE ) ; # ifdef TIF_SYSCALL_EMU clear_tsk_thread_flag ( p , TIF_SYSCALL_EMU ) ; # endif clear_all_latency_tracing ( p ) ; if ( clone_flags & CLONE_THREAD ) p -> exit_signal = - 1 ; else if ( clone_flags & CLONE_PARENT ) p -> exit_signal = current -> group_leader -> exit_signal ; else p -> exit_signal = ( clone_flags & CSIGNAL ) ; p -> pdeath_signal = 0 ; p -> exit_state = 0 ; p -> nr_dirtied = 0 ; p -> nr_dirtied_pause = 128 >> ( PAGE_SHIFT - 10 ) ; p -> dirty_paused_when = 0 ; p -> group_leader = p ; INIT_LIST_HEAD ( & p -> thread_group ) ; p -> task_works = NULL ; write_lock_irq ( & tasklist_lock ) ; if ( clone_flags & ( CLONE_PARENT | CLONE_THREAD ) ) { p -> real_parent = current -> real_parent ; p -> parent_exec_id = current -> parent_exec_id ; } else { p -> real_parent = current ; p -> parent_exec_id = current -> self_exec_id ; } spin_lock ( & current -> sighand -> siglock ) ; recalc_sigpending ( ) ; if ( signal_pending ( current ) ) { spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; retval = - ERESTARTNOINTR ; goto bad_fork_free_pid ; } if ( clone_flags & CLONE_THREAD ) { current -> signal -> nr_threads ++ ; atomic_inc ( & current -> signal -> live ) ; atomic_inc ( & current -> signal -> sigcnt ) ; p -> group_leader = current -> group_leader ; list_add_tail_rcu ( & p -> thread_group , & p -> group_leader -> thread_group ) ; } if ( likely ( p -> pid ) ) { ptrace_init_task ( p , ( clone_flags & CLONE_PTRACE ) || trace ) ; if ( thread_group_leader ( p ) ) { if ( is_child_reaper ( pid ) ) { ns_of_pid ( pid ) -> child_reaper = p ; p -> signal -> flags |= SIGNAL_UNKILLABLE ; } p -> signal -> leader_pid = pid ; p -> signal -> tty = tty_kref_get ( current -> signal -> tty ) ; attach_pid ( p , PIDTYPE_PGID , task_pgrp ( current ) ) ; attach_pid ( p , PIDTYPE_SID , task_session ( current ) ) ; list_add_tail ( & p -> sibling , & p -> real_parent -> children ) ; list_add_tail_rcu ( & p -> tasks , & init_task . tasks ) ; __this_cpu_inc ( process_counts ) ; } attach_pid ( p , PIDTYPE_PID , pid ) ; nr_threads ++ ; } total_forks ++ ; spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; proc_fork_connector ( p ) ; cgroup_post_fork ( p ) ; if ( clone_flags & CLONE_THREAD ) threadgroup_change_end ( current ) ; perf_event_fork ( p ) ; trace_task_newtask ( p , clone_flags ) ; return p ; bad_fork_free_pid : if ( pid != & init_struct_pid ) free_pid ( pid ) ; bad_fork_cleanup_io : if ( p -> io_context ) exit_io_context ( p ) ; bad_fork_cleanup_namespaces : exit_task_namespaces ( p ) ; bad_fork_cleanup_mm : if ( p -> mm ) mmput ( p -> mm ) ; bad_fork_cleanup_signal : if ( ! ( clone_flags & CLONE_THREAD ) ) free_signal_struct ( p -> signal ) ; bad_fork_cleanup_sighand : __cleanup_sighand ( p -> sighand ) ; bad_fork_cleanup_fs : exit_fs ( p ) ; bad_fork_cleanup_files : exit_files ( p ) ; bad_fork_cleanup_semundo : exit_sem ( p ) ; bad_fork_cleanup_audit : audit_free ( p ) ; bad_fork_cleanup_policy : perf_event_free_task ( p ) ; # ifdef CONFIG_NUMA mpol_put ( p -> mempolicy ) ; bad_fork_cleanup_cgroup : # endif if ( clone_flags & CLONE_THREAD ) threadgroup_change_end ( current ) ; cgroup_exit ( p , 0 ) ; delayacct_tsk_free ( p ) ; module_put ( task_thread_info ( p ) -> exec_domain -> module ) ; bad_fork_cleanup_count : atomic_dec ( & p -> cred -> user -> processes ) ; exit_creds ( p ) ; bad_fork_free : free_task ( p ) ; fork_out : return ERR_PTR ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( clone_flags & ( CLONE_NEWUSER | CLONE_FS ) ) == ( CLONE_NEWUSER | CLONE_FS ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6310\n\n```\nCWE-125 static void file_add_mapi_attrs ( File * file , MAPI_Attr * * attrs ) { int i ; for ( i = 0 ; attrs [ i ] ; i ++ ) { MAPI_Attr * a = attrs [ i ] ; if ( a -> num_values ) { switch ( a -> name ) { case MAPI_ATTACH_LONG_FILENAME : <S2SV_StartBug> if ( file -> name ) XFREE ( file -> name ) ; <S2SV_EndBug> file -> name = strdup ( ( char * ) a -> values [ 0 ] . data . buf ) ; break ; case MAPI_ATTACH_DATA_OBJ : <S2SV_StartBug> file -> len = a -> values [ 0 ] . len ; <S2SV_EndBug> if ( file -> data ) XFREE ( file -> data ) ; file -> data = CHECKED_XMALLOC ( unsigned char , file -> len ) ; memmove ( file -> data , a -> values [ 0 ] . data . buf , file -> len ) ; break ; case MAPI_ATTACH_MIME_TAG : <S2SV_StartBug> if ( file -> mime_type ) XFREE ( file -> mime_type ) ; <S2SV_EndBug> file -> mime_type = CHECKED_XMALLOC ( char , a -> values [ 0 ] . len ) ; memmove ( file -> mime_type , a -> values [ 0 ] . data . buf , a -> values [ 0 ] . len ) ; break ; case MAPI_ATTACH_CONTENT_ID : <S2SV_StartBug> if ( file -> content_id ) XFREE ( file -> content_id ) ; <S2SV_EndBug> file -> content_id = CHECKED_XMALLOC ( char , a -> values [ 0 ] . len ) ; memmove ( file -> content_id , a -> values [ 0 ] . data . buf , a -> values [ 0 ] . len ) ; break ; default : break ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case MAPI_ATTACH_LONG_FILENAME : assert ( a -> type == szMAPI_STRING ) ; <S2SV_ModStart> case MAPI_ATTACH_DATA_OBJ : assert ( ( a -> type == szMAPI_BINARY ) || ( a -> type == szMAPI_OBJECT ) ) ; <S2SV_ModStart> case MAPI_ATTACH_MIME_TAG : assert ( a -> type == szMAPI_STRING ) ; <S2SV_ModStart> case MAPI_ATTACH_CONTENT_ID : assert ( a -> type == szMAPI_STRING ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_print_negotiate_flags ( UINT32 flags ) <S2SV_EndBug> { int i ; const char * str ; WLog_INFO ( TAG , \"negotiateFlags<S2SV_blank>\\\\\"0x%08\" PRIX32 \"\\\\\"\" , flags ) ; for ( i = 31 ; i >= 0 ; i -- ) { if ( ( flags >> i ) & 1 ) { str = NTLM_NEGOTIATE_STRINGS [ ( 31 - i ) ] ; WLog_INFO ( TAG , \"\\\\t%s<S2SV_blank>(%d),\" , str , ( 31 - i ) ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static void write_version ( FILE * fp , const char * fname , const char * dirname , xref_t * xref ) { long start ; char * c , * new_fname , data ; FILE * new_fp ; start = ftell ( fp ) ; if ( ( c = strstr ( fname , \".pdf\" ) ) ) * c = '\\\\0' ; <S2SV_StartBug> new_fname = malloc ( strlen ( fname ) + strlen ( dirname ) + 16 ) ; <S2SV_EndBug> snprintf ( new_fname , strlen ( fname ) + strlen ( dirname ) + 16 , \"%s/%s-version-%d.pdf\" , dirname , fname , xref -> version ) ; if ( ! ( new_fp = fopen ( new_fname , \"w\" ) ) ) { ERR ( \"Could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , new_fname ) ; fseek ( fp , start , SEEK_SET ) ; free ( new_fname ) ; return ; } fseek ( fp , 0 , SEEK_SET ) ; while ( fread ( & data , 1 , 1 , fp ) ) fwrite ( & data , 1 , 1 , new_fp ) ; fprintf ( new_fp , \"\\\\r\\\\nstartxref\\\\r\\\\n%ld\\\\r\\\\n%%%%EOF\" , xref -> start ) ; fclose ( new_fp ) ; free ( new_fname ) ; fseek ( fp , start , SEEK_SET ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; new_fname = safe_calloc <S2SV_ModEnd> ( strlen (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 struct dst_entry * inet6_csk_route_req ( const struct sock * sk , struct flowi6 * fl6 , const struct request_sock * req , u8 proto ) { struct inet_request_sock * ireq = inet_rsk ( req ) ; const struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct in6_addr * final_p , final ; struct dst_entry * dst ; memset ( fl6 , 0 , sizeof ( * fl6 ) ) ; fl6 -> flowi6_proto = proto ; fl6 -> daddr = ireq -> ir_v6_rmt_addr ; <S2SV_StartBug> final_p = fl6_update_dst ( fl6 , np -> opt , & final ) ; <S2SV_EndBug> <S2SV_StartBug> fl6 -> saddr = ireq -> ir_v6_loc_addr ; <S2SV_EndBug> fl6 -> flowi6_oif = ireq -> ir_iif ; fl6 -> flowi6_mark = ireq -> ir_mark ; fl6 -> fl6_dport = ireq -> ir_rmt_port ; fl6 -> fl6_sport = htons ( ireq -> ir_num ) ; security_req_classify_flow ( req , flowi6_to_flowi ( fl6 ) ) ; dst = ip6_dst_lookup_flow ( sk , fl6 , final_p ) ; if ( IS_ERR ( dst ) ) return NULL ; return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ir_v6_rmt_addr ; rcu_read_lock ( ) ; <S2SV_ModStart> ( fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt ) <S2SV_ModStart> final ) ; rcu_read_unlock ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10161\n\n```\nCWE-125 PHPAPI int php_var_unserialize ( UNSERIALIZE_PARAMETER ) { const unsigned char * cursor , * limit , * marker , * start ; zval * * rval_ref ; limit = max ; cursor = * p ; if ( YYCURSOR >= YYLIMIT ) { return 0 ; } if ( var_hash && cursor [ 0 ] != 'R' ) { var_push ( var_hash , rval ) ; } start = cursor ; <S2SV_StartBug> # line 496 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> { YYCTYPE yych ; static const unsigned char yybm [ ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , } ; if ( ( YYLIMIT - YYCURSOR ) < 7 ) YYFILL ( 7 ) ; yych = * YYCURSOR ; switch ( yych ) { case 'C' : case 'O' : goto yy13 ; case 'N' : goto yy5 ; case 'R' : goto yy2 ; case 'S' : goto yy10 ; case 'a' : goto yy11 ; case 'b' : goto yy6 ; case 'd' : goto yy8 ; case 'i' : goto yy7 ; case 'o' : goto yy12 ; case 'r' : goto yy4 ; case 's' : goto yy9 ; case '}' : goto yy14 ; default : goto yy16 ; } yy2 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy95 ; yy3 : <S2SV_StartBug> # line 861 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { return 0 ; } <S2SV_StartBug> # line 558 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy4 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy89 ; goto yy3 ; yy5 : yych = * ++ YYCURSOR ; if ( yych == ';' ) goto yy87 ; goto yy3 ; yy6 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy83 ; goto yy3 ; yy7 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy77 ; goto yy3 ; yy8 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy53 ; goto yy3 ; yy9 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy46 ; goto yy3 ; yy10 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy39 ; goto yy3 ; yy11 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy32 ; goto yy3 ; yy12 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy25 ; goto yy3 ; yy13 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy17 ; goto yy3 ; yy14 : ++ YYCURSOR ; <S2SV_StartBug> # line 855 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { php_error_docref ( NULL TSRMLS_CC , E_NOTICE , \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>serialized<S2SV_blank>data\" ) ; return 0 ; } <S2SV_StartBug> # line 607 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy16 : yych = * ++ YYCURSOR ; goto yy3 ; yy17 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych == '+' ) goto yy19 ; yy18 : YYCURSOR = YYMARKER ; goto yy3 ; yy19 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } goto yy18 ; yy20 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych <= '/' ) goto yy18 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 708 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , len2 , len3 , maxlen ; long elements ; char * class_name ; zend_class_entry * ce ; zend_class_entry * * pce ; int incomplete_class = 0 ; int custom_object = 0 ; zval * user_func ; zval * retval_ptr ; zval * * args [ 1 ] ; zval * arg_func_name ; if ( ! var_hash ) return 0 ; if ( * start == 'C' ) { custom_object = 1 ; } INIT_PZVAL ( * rval ) ; len2 = len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len || len == 0 ) { * p = start + 2 ; return 0 ; } class_name = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ':' ) { * p = YYCURSOR + 1 ; return 0 ; } len3 = strspn ( class_name , \"0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\\\\177\\\\200\\\\201\\\\202\\\\203\\\\204\\\\205\\\\206\\\\207\\\\210\\\\211\\\\212\\\\213\\\\214\\\\215\\\\216\\\\217\\\\220\\\\221\\\\222\\\\223\\\\224\\\\225\\\\226\\\\227\\\\230\\\\231\\\\232\\\\233\\\\234\\\\235\\\\236\\\\237\\\\240\\\\241\\\\242\\\\243\\\\244\\\\245\\\\246\\\\247\\\\250\\\\251\\\\252\\\\253\\\\254\\\\255\\\\256\\\\257\\\\260\\\\261\\\\262\\\\263\\\\264\\\\265\\\\266\\\\267\\\\270\\\\271\\\\272\\\\273\\\\274\\\\275\\\\276\\\\277\\\\300\\\\301\\\\302\\\\303\\\\304\\\\305\\\\306\\\\307\\\\310\\\\311\\\\312\\\\313\\\\314\\\\315\\\\316\\\\317\\\\320\\\\321\\\\322\\\\323\\\\324\\\\325\\\\326\\\\327\\\\330\\\\331\\\\332\\\\333\\\\334\\\\335\\\\336\\\\337\\\\340\\\\341\\\\342\\\\343\\\\344\\\\345\\\\346\\\\347\\\\350\\\\351\\\\352\\\\353\\\\354\\\\355\\\\356\\\\357\\\\360\\\\361\\\\362\\\\363\\\\364\\\\365\\\\366\\\\367\\\\370\\\\371\\\\372\\\\373\\\\374\\\\375\\\\376\\\\377\\\\\\\\\" ) ; if ( len3 != len ) { * p = YYCURSOR + len3 - len ; return 0 ; } class_name = estrndup ( class_name , len ) ; do { BG ( serialize_lock ) ++ ; if ( zend_lookup_class ( class_name , len2 , & pce TSRMLS_CC ) == SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; return 0 ; } ce = * pce ; break ; } BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; return 0 ; } if ( ( PG ( unserialize_callback_func ) == NULL ) || ( PG ( unserialize_callback_func ) [ 0 ] == '\\\\0' ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } MAKE_STD_ZVAL ( user_func ) ; ZVAL_STRING ( user_func , PG ( unserialize_callback_func ) , 1 ) ; args [ 0 ] = & arg_func_name ; MAKE_STD_ZVAL ( arg_func_name ) ; ZVAL_STRING ( arg_func_name , class_name , 1 ) ; BG ( serialize_lock ) ++ ; if ( call_user_function_ex ( CG ( function_table ) , NULL , user_func , & retval_ptr , 1 , args , 0 , NULL TSRMLS_CC ) != SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; return 0 ; } php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"defined<S2SV_blank>(%s)<S2SV_blank>but<S2SV_blank>not<S2SV_blank>found\" , user_func -> value . str . val ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; break ; } BG ( serialize_lock ) -- ; if ( retval_ptr ) { zval_ptr_dtor ( & retval_ptr ) ; } if ( EG ( exception ) ) { efree ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; return 0 ; } if ( zend_lookup_class ( class_name , len2 , & pce TSRMLS_CC ) == SUCCESS ) { ce = * pce ; } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Function<S2SV_blank>%s()<S2SV_blank>hasn\\'t<S2SV_blank>defined<S2SV_blank>the<S2SV_blank>class<S2SV_blank>it<S2SV_blank>was<S2SV_blank>called<S2SV_blank>for\" , user_func -> value . str . val ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; } zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; break ; } while ( 1 ) ; * p = YYCURSOR ; if ( custom_object ) { int ret ; ret = object_custom ( UNSERIALIZE_PASSTHRU , ce ) ; if ( ret && incomplete_class ) { php_store_class_name ( * rval , class_name , len2 ) ; } efree ( class_name ) ; return ret ; } elements = object_common1 ( UNSERIALIZE_PASSTHRU , ce ) ; <S2SV_StartBug> if ( incomplete_class ) { <S2SV_EndBug> php_store_class_name ( * rval , class_name , len2 ) ; } efree ( class_name ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } <S2SV_StartBug> # line 785 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy25 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy26 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; goto yy18 ; } yy26 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy27 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 699 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { if ( ! var_hash ) return 0 ; INIT_PZVAL ( * rval ) ; <S2SV_StartBug> return object_common2 ( UNSERIALIZE_PASSTHRU , <S2SV_EndBug> <S2SV_StartBug> object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ) ; <S2SV_EndBug> } <S2SV_StartBug> # line 819 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy32 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy33 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; goto yy18 ; yy33 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy34 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != '{' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 678 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long elements = parse_iv ( start + 2 ) ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; if ( elements < 0 ) { return 0 ; } INIT_PZVAL ( * rval ) ; array_init_size ( * rval , elements ) ; if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_ARRVAL_PP ( rval ) , elements , 0 ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; } <S2SV_StartBug> # line 861 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy39 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy40 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; goto yy18 ; yy40 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy41 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 643 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } if ( ( str = unserialize_str ( & YYCURSOR , & len , maxlen ) ) == NULL ) { return 0 ; } if ( * ( YYCURSOR ) != \\'\"\\' ) { efree ( str ) ; * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { efree ( str ) ; * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_STRINGL ( * rval , str , len , 0 ) ; return 1 ; } <S2SV_StartBug> # line 917 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy46 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy47 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; goto yy18 ; yy47 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy48 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 610 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_STRINGL ( * rval , str , len , 1 ) ; return 1 ; } <S2SV_StartBug> # line 971 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy53 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych <= ',' ) { if ( yych == '+' ) goto yy57 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy55 ; if ( yych <= '.' ) goto yy60 ; goto yy18 ; } } else { if ( yych <= 'I' ) { if ( yych <= '9' ) goto yy58 ; if ( yych <= 'H' ) goto yy18 ; goto yy56 ; } else { if ( yych != 'N' ) goto yy18 ; } } yych = * ++ YYCURSOR ; if ( yych == 'A' ) goto yy76 ; goto yy18 ; yy55 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych == '.' ) goto yy60 ; goto yy18 ; } else { if ( yych <= '9' ) goto yy58 ; if ( yych != 'I' ) goto yy18 ; } yy56 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy72 ; goto yy18 ; yy57 : yych = * ++ YYCURSOR ; if ( yych == '.' ) goto yy60 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy58 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ':' ) { if ( yych <= '.' ) { if ( yych <= '-' ) goto yy18 ; goto yy70 ; } else { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy58 ; goto yy18 ; } } else { if ( yych <= 'E' ) { if ( yych <= ';' ) goto yy63 ; if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy60 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy61 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy61 ; if ( yych <= ':' ) goto yy18 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy63 : ++ YYCURSOR ; <S2SV_StartBug> # line 600 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { # if SIZEOF_LONG == 4 use_double : # endif * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_DOUBLE ( * rval , zend_strtod ( ( const char * ) start + 2 , NULL ) ) ; return 1 ; } <S2SV_StartBug> # line 1069 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy65 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy66 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; } yy66 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy69 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy69 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; } yy67 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; if ( yych == ';' ) goto yy63 ; goto yy18 ; yy69 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; yy70 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy70 ; if ( yych <= ':' ) goto yy18 ; goto yy63 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy72 : yych = * ++ YYCURSOR ; if ( yych != 'F' ) goto yy18 ; yy73 : yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 585 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; if ( ! strncmp ( start + 2 , \"NAN\" , 3 ) ) { ZVAL_DOUBLE ( * rval , php_get_nan ( ) ) ; } else if ( ! strncmp ( start + 2 , \"INF\" , 3 ) ) { ZVAL_DOUBLE ( * rval , php_get_inf ( ) ) ; } else if ( ! strncmp ( start + 2 , \"-INF\" , 4 ) ) { ZVAL_DOUBLE ( * rval , - php_get_inf ( ) ) ; } return 1 ; } <S2SV_StartBug> # line 1143 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy76 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy73 ; goto yy18 ; yy77 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy78 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; goto yy18 ; } yy78 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy79 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 558 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { # if SIZEOF_LONG == 4 int digits = YYCURSOR - start - 3 ; if ( start [ 2 ] == '-' || start [ 2 ] == '+' ) { digits -- ; } if ( digits >= MAX_LENGTH_OF_LONG - 1 ) { if ( digits == MAX_LENGTH_OF_LONG - 1 ) { int cmp = strncmp ( YYCURSOR - MAX_LENGTH_OF_LONG , long_min_digits , MAX_LENGTH_OF_LONG - 1 ) ; if ( ! ( cmp < 0 || ( cmp == 0 && start [ 2 ] == '-' ) ) ) { goto use_double ; } } else { goto use_double ; } } # endif * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_LONG ( * rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1197 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy83 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= '2' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 551 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_BOOL ( * rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1212 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy87 : ++ YYCURSOR ; <S2SV_StartBug> # line 544 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_NULL ( * rval ) ; return 1 ; } <S2SV_StartBug> # line 1222 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy89 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy90 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; goto yy18 ; } yy90 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy91 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 521 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || var_access ( var_hash , id , & rval_ref ) != SUCCESS ) { return 0 ; } if ( * rval == * rval_ref ) return 0 ; if ( * rval != NULL ) { var_push_dtor_no_addref ( var_hash , rval ) ; } * rval = * rval_ref ; Z_ADDREF_PP ( rval ) ; Z_UNSET_ISREF_PP ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1268 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy95 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy96 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; goto yy18 ; } yy96 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy97 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 500 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || var_access ( var_hash , id , & rval_ref ) != SUCCESS ) { return 0 ; } if ( * rval != NULL ) { var_push_dtor_no_addref ( var_hash , rval ) ; } * rval = * rval_ref ; Z_ADDREF_PP ( rval ) ; Z_SET_ISREF_PP ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1312 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> } <S2SV_StartBug> # line 863 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # line 501 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" { YYCTYPE <S2SV_ModStart> : # line 875 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { return <S2SV_ModStart> } # line 563 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy4 : <S2SV_ModStart> ; # line 869 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { php_error_docref <S2SV_ModStart> } # line 612 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy16 : <S2SV_ModStart> ; # line 717 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> ; if ( elements < 0 ) { efree ( class_name ) ; return 0 ; } if ( <S2SV_ModStart> } # line 795 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy25 : <S2SV_ModStart> ; # line 704 \"ext/standard/var_unserializer.re\" { long elements ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> rval ) ; elements = object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ; if ( elements < 0 ) { return 0 ; } <S2SV_ModStart> ( UNSERIALIZE_PASSTHRU , elements <S2SV_ModEnd> ) ; } <S2SV_ModStart> } # line 833 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy32 : <S2SV_ModStart> ; # line 683 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 875 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy39 : <S2SV_ModStart> ; # line 648 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 931 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy46 : <S2SV_ModStart> ; # line 615 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 985 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy53 : <S2SV_ModStart> ; # line 605 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1083 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy65 : <S2SV_ModStart> ; # line 590 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1157 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy76 : <S2SV_ModStart> ; # line 563 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1211 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy83 : <S2SV_ModStart> ; # line 556 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1226 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy87 : <S2SV_ModStart> ; # line 549 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1236 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy89 : <S2SV_ModStart> ; # line 526 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 1282 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy95 : <S2SV_ModStart> ; # line 505 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 1326 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" } # <S2SV_ModStart> } # line 877 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int btsock_thread_exit ( int h ) { if ( h < 0 || h >= MAX_THREAD ) { APPL_TRACE_ERROR ( \"invalid<S2SV_blank>bt<S2SV_blank>thread<S2SV_blank>handle:%d\" , h ) ; return FALSE ; } if ( ts [ h ] . cmd_fdw == - 1 ) { APPL_TRACE_ERROR ( \"cmd<S2SV_blank>socket<S2SV_blank>is<S2SV_blank>not<S2SV_blank>created\" ) ; return FALSE ; } sock_cmd_t cmd = { CMD_EXIT , 0 , 0 , 0 , 0 } ; <S2SV_StartBug> if ( send ( ts [ h ] . cmd_fdw , & cmd , sizeof ( cmd ) , 0 ) == sizeof ( cmd ) ) <S2SV_EndBug> { pthread_join ( ts [ h ] . thread_id , 0 ) ; pthread_mutex_lock ( & thread_slot_lock ) ; free_thread_slot ( h ) ; pthread_mutex_unlock ( & thread_slot_lock ) ; return TRUE ; } return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> ) , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4244\n\n```\nCWE-119 int process ( register int code , unsigned char * * fill ) { int incode ; static unsigned char firstchar ; if ( code == clear ) { codesize = datasize + 1 ; codemask = ( 1 << codesize ) - 1 ; avail = clear + 2 ; oldcode = - 1 ; return 1 ; } if ( oldcode == - 1 ) { <S2SV_StartBug> * ( * fill ) ++ = suffix [ code ] ; <S2SV_EndBug> firstchar = oldcode = code ; return 1 ; } if ( code > avail ) { fprintf ( stderr , \"code<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>for<S2SV_blank>%d\\\\n\" , code , avail ) ; return 0 ; } incode = code ; if ( code == avail ) { * stackp ++ = firstchar ; code = oldcode ; } while ( code > clear ) { * stackp ++ = suffix [ code ] ; code = prefix [ code ] ; } * stackp ++ = firstchar = suffix [ code ] ; prefix [ avail ] = oldcode ; suffix [ avail ] = firstchar ; avail ++ ; if ( ( ( avail & codemask ) == 0 ) && ( avail < 4096 ) ) { codesize ++ ; codemask += avail ; } oldcode = incode ; do { * ( * fill ) ++ = * -- stackp ; } while ( stackp > stack ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) { if ( code >= clear ) { fprintf ( stderr , \"bad<S2SV_blank>input:<S2SV_blank>code=%d<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>clear=%d\\\\n\" , code , clear ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int irda_recvmsg_dgram ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct irda_sock * self = irda_sk ( sk ) ; struct sk_buff * skb ; size_t copied ; int err ; IRDA_DEBUG ( 4 , \"%s()\\\\n\" , __func__ ) ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & err ) ; if ( ! skb ) return err ; skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Received<S2SV_blank>truncated<S2SV_blank>frame<S2SV_blank>(%zd<S2SV_blank><<S2SV_blank>%zd)!\\\\n\" , __func__ , copied , size ) ; copied = size ; msg -> msg_flags |= MSG_TRUNC ; } skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; skb_free_datagram ( sk , skb ) ; if ( self -> rx_flow == FLOW_STOP ) { if ( ( atomic_read ( & sk -> sk_rmem_alloc ) << 2 ) <= sk -> sk_rcvbuf ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Starting<S2SV_blank>IrTTP\\\\n\" , __func__ ) ; self -> rx_flow = FLOW_START ; irttp_flow_request ( self -> tsap , FLOW_START ) ; } } return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> __func__ ) ; <S2SV_ModEnd> skb = skb_recv_datagram\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35508\n\n```\nCWE-665 static __latent_entropy struct task_struct * copy_process ( struct pid * pid , int trace , int node , struct kernel_clone_args * args ) { int pidfd = - 1 , retval ; struct task_struct * p ; struct multiprocess_signals delayed ; struct file * pidfile = NULL ; u64 clone_flags = args -> flags ; struct nsproxy * nsp = current -> nsproxy ; if ( ( clone_flags & ( CLONE_NEWNS | CLONE_FS ) ) == ( CLONE_NEWNS | CLONE_FS ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & ( CLONE_NEWUSER | CLONE_FS ) ) == ( CLONE_NEWUSER | CLONE_FS ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_THREAD ) && ! ( clone_flags & CLONE_SIGHAND ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_SIGHAND ) && ! ( clone_flags & CLONE_VM ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_PARENT ) && current -> signal -> flags & SIGNAL_UNKILLABLE ) return ERR_PTR ( - EINVAL ) ; if ( clone_flags & CLONE_THREAD ) { if ( ( clone_flags & ( CLONE_NEWUSER | CLONE_NEWPID ) ) || ( task_active_pid_ns ( current ) != nsp -> pid_ns_for_children ) ) return ERR_PTR ( - EINVAL ) ; } if ( clone_flags & ( CLONE_THREAD | CLONE_VM ) ) { if ( nsp -> time_ns != nsp -> time_ns_for_children ) return ERR_PTR ( - EINVAL ) ; } if ( clone_flags & CLONE_PIDFD ) { if ( clone_flags & ( CLONE_DETACHED | CLONE_THREAD ) ) return ERR_PTR ( - EINVAL ) ; } sigemptyset ( & delayed . signal ) ; INIT_HLIST_NODE ( & delayed . node ) ; spin_lock_irq ( & current -> sighand -> siglock ) ; if ( ! ( clone_flags & CLONE_THREAD ) ) hlist_add_head ( & delayed . node , & current -> signal -> multiprocess ) ; recalc_sigpending ( ) ; spin_unlock_irq ( & current -> sighand -> siglock ) ; retval = - ERESTARTNOINTR ; if ( signal_pending ( current ) ) goto fork_out ; retval = - ENOMEM ; p = dup_task_struct ( current , node ) ; if ( ! p ) goto fork_out ; p -> set_child_tid = ( clone_flags & CLONE_CHILD_SETTID ) ? args -> child_tid : NULL ; p -> clear_child_tid = ( clone_flags & CLONE_CHILD_CLEARTID ) ? args -> child_tid : NULL ; ftrace_graph_init_task ( p ) ; rt_mutex_init_task ( p ) ; lockdep_assert_irqs_enabled ( ) ; # ifdef CONFIG_PROVE_LOCKING DEBUG_LOCKS_WARN_ON ( ! p -> softirqs_enabled ) ; # endif retval = - EAGAIN ; if ( atomic_read ( & p -> real_cred -> user -> processes ) >= task_rlimit ( p , RLIMIT_NPROC ) ) { if ( p -> real_cred -> user != INIT_USER && ! capable ( CAP_SYS_RESOURCE ) && ! capable ( CAP_SYS_ADMIN ) ) goto bad_fork_free ; } current -> flags &= ~ PF_NPROC_EXCEEDED ; retval = copy_creds ( p , clone_flags ) ; if ( retval < 0 ) goto bad_fork_free ; retval = - EAGAIN ; if ( data_race ( nr_threads >= max_threads ) ) goto bad_fork_cleanup_count ; delayacct_tsk_init ( p ) ; p -> flags &= ~ ( PF_SUPERPRIV | PF_WQ_WORKER | PF_IDLE ) ; p -> flags |= PF_FORKNOEXEC ; INIT_LIST_HEAD ( & p -> children ) ; INIT_LIST_HEAD ( & p -> sibling ) ; rcu_copy_process ( p ) ; p -> vfork_done = NULL ; spin_lock_init ( & p -> alloc_lock ) ; init_sigpending ( & p -> pending ) ; p -> utime = p -> stime = p -> gtime = 0 ; # ifdef CONFIG_ARCH_HAS_SCALED_CPUTIME p -> utimescaled = p -> stimescaled = 0 ; # endif prev_cputime_init ( & p -> prev_cputime ) ; # ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN seqcount_init ( & p -> vtime . seqcount ) ; p -> vtime . starttime = 0 ; p -> vtime . state = VTIME_INACTIVE ; # endif # ifdef CONFIG_IO_URING p -> io_uring = NULL ; # endif # if defined ( SPLIT_RSS_COUNTING ) memset ( & p -> rss_stat , 0 , sizeof ( p -> rss_stat ) ) ; # endif p -> default_timer_slack_ns = current -> timer_slack_ns ; # ifdef CONFIG_PSI p -> psi_flags = 0 ; # endif task_io_accounting_init ( & p -> ioac ) ; acct_clear_integrals ( p ) ; posix_cputimers_init ( & p -> posix_cputimers ) ; p -> io_context = NULL ; audit_set_context ( p , NULL ) ; cgroup_fork ( p ) ; # ifdef CONFIG_NUMA p -> mempolicy = mpol_dup ( p -> mempolicy ) ; if ( IS_ERR ( p -> mempolicy ) ) { retval = PTR_ERR ( p -> mempolicy ) ; p -> mempolicy = NULL ; goto bad_fork_cleanup_threadgroup_lock ; } # endif # ifdef CONFIG_CPUSETS p -> cpuset_mem_spread_rotor = NUMA_NO_NODE ; p -> cpuset_slab_spread_rotor = NUMA_NO_NODE ; seqcount_spinlock_init ( & p -> mems_allowed_seq , & p -> alloc_lock ) ; # endif # ifdef CONFIG_TRACE_IRQFLAGS memset ( & p -> irqtrace , 0 , sizeof ( p -> irqtrace ) ) ; p -> irqtrace . hardirq_disable_ip = _THIS_IP_ ; p -> irqtrace . softirq_enable_ip = _THIS_IP_ ; p -> softirqs_enabled = 1 ; p -> softirq_context = 0 ; # endif p -> pagefault_disabled = 0 ; # ifdef CONFIG_LOCKDEP lockdep_init_task ( p ) ; # endif # ifdef CONFIG_DEBUG_MUTEXES p -> blocked_on = NULL ; # endif # ifdef CONFIG_BCACHE p -> sequential_io = 0 ; p -> sequential_io_avg = 0 ; # endif retval = sched_fork ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_policy ; retval = perf_event_init_task ( p ) ; if ( retval ) goto bad_fork_cleanup_policy ; retval = audit_alloc ( p ) ; if ( retval ) goto bad_fork_cleanup_perf ; shm_init_task ( p ) ; retval = security_task_alloc ( p , clone_flags ) ; if ( retval ) goto bad_fork_cleanup_audit ; retval = copy_semundo ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_security ; retval = copy_files ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_semundo ; retval = copy_fs ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_files ; retval = copy_sighand ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_fs ; retval = copy_signal ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_sighand ; retval = copy_mm ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_signal ; retval = copy_namespaces ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_mm ; retval = copy_io ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_namespaces ; retval = copy_thread ( clone_flags , args -> stack , args -> stack_size , p , args -> tls ) ; if ( retval ) goto bad_fork_cleanup_io ; stackleak_task_init ( p ) ; if ( pid != & init_struct_pid ) { pid = alloc_pid ( p -> nsproxy -> pid_ns_for_children , args -> set_tid , args -> set_tid_size ) ; if ( IS_ERR ( pid ) ) { retval = PTR_ERR ( pid ) ; goto bad_fork_cleanup_thread ; } } if ( clone_flags & CLONE_PIDFD ) { retval = get_unused_fd_flags ( O_RDWR | O_CLOEXEC ) ; if ( retval < 0 ) goto bad_fork_free_pid ; pidfd = retval ; pidfile = anon_inode_getfile ( \"[pidfd]\" , & pidfd_fops , pid , O_RDWR | O_CLOEXEC ) ; if ( IS_ERR ( pidfile ) ) { put_unused_fd ( pidfd ) ; retval = PTR_ERR ( pidfile ) ; goto bad_fork_free_pid ; } get_pid ( pid ) ; retval = put_user ( pidfd , args -> pidfd ) ; if ( retval ) goto bad_fork_put_pidfd ; } # ifdef CONFIG_BLOCK p -> plug = NULL ; # endif futex_init_task ( p ) ; if ( ( clone_flags & ( CLONE_VM | CLONE_VFORK ) ) == CLONE_VM ) sas_ss_reset ( p ) ; user_disable_single_step ( p ) ; clear_tsk_thread_flag ( p , TIF_SYSCALL_TRACE ) ; # ifdef TIF_SYSCALL_EMU clear_tsk_thread_flag ( p , TIF_SYSCALL_EMU ) ; # endif clear_tsk_latency_tracing ( p ) ; p -> pid = pid_nr ( pid ) ; if ( clone_flags & CLONE_THREAD ) { <S2SV_StartBug> p -> exit_signal = - 1 ; <S2SV_EndBug> p -> group_leader = current -> group_leader ; p -> tgid = current -> tgid ; } else { <S2SV_StartBug> if ( clone_flags & CLONE_PARENT ) <S2SV_EndBug> p -> exit_signal = current -> group_leader -> exit_signal ; else p -> exit_signal = args -> exit_signal ; p -> group_leader = p ; p -> tgid = p -> pid ; } p -> nr_dirtied = 0 ; p -> nr_dirtied_pause = 128 >> ( PAGE_SHIFT - 10 ) ; p -> dirty_paused_when = 0 ; p -> pdeath_signal = 0 ; INIT_LIST_HEAD ( & p -> thread_group ) ; p -> task_works = NULL ; retval = cgroup_can_fork ( p , args ) ; if ( retval ) goto bad_fork_put_pidfd ; p -> start_time = ktime_get_ns ( ) ; p -> start_boottime = ktime_get_boottime_ns ( ) ; write_lock_irq ( & tasklist_lock ) ; if ( clone_flags & ( CLONE_PARENT | CLONE_THREAD ) ) { p -> real_parent = current -> real_parent ; p -> parent_exec_id = current -> parent_exec_id ; <S2SV_StartBug> } else { <S2SV_EndBug> p -> real_parent = current ; p -> parent_exec_id = current -> self_exec_id ; <S2SV_StartBug> } <S2SV_EndBug> klp_copy_process ( p ) ; spin_lock ( & current -> sighand -> siglock ) ; copy_seccomp ( p ) ; rseq_fork ( p , clone_flags ) ; if ( unlikely ( ! ( ns_of_pid ( pid ) -> pid_allocated & PIDNS_ADDING ) ) ) { retval = - ENOMEM ; goto bad_fork_cancel_cgroup ; } if ( fatal_signal_pending ( current ) ) { retval = - EINTR ; goto bad_fork_cancel_cgroup ; } if ( pidfile ) fd_install ( pidfd , pidfile ) ; init_task_pid_links ( p ) ; if ( likely ( p -> pid ) ) { ptrace_init_task ( p , ( clone_flags & CLONE_PTRACE ) || trace ) ; init_task_pid ( p , PIDTYPE_PID , pid ) ; if ( thread_group_leader ( p ) ) { init_task_pid ( p , PIDTYPE_TGID , pid ) ; init_task_pid ( p , PIDTYPE_PGID , task_pgrp ( current ) ) ; init_task_pid ( p , PIDTYPE_SID , task_session ( current ) ) ; if ( is_child_reaper ( pid ) ) { ns_of_pid ( pid ) -> child_reaper = p ; p -> signal -> flags |= SIGNAL_UNKILLABLE ; } p -> signal -> shared_pending . signal = delayed . signal ; p -> signal -> tty = tty_kref_get ( current -> signal -> tty ) ; p -> signal -> has_child_subreaper = p -> real_parent -> signal -> has_child_subreaper || p -> real_parent -> signal -> is_child_subreaper ; list_add_tail ( & p -> sibling , & p -> real_parent -> children ) ; list_add_tail_rcu ( & p -> tasks , & init_task . tasks ) ; attach_pid ( p , PIDTYPE_TGID ) ; attach_pid ( p , PIDTYPE_PGID ) ; attach_pid ( p , PIDTYPE_SID ) ; __this_cpu_inc ( process_counts ) ; } else { current -> signal -> nr_threads ++ ; atomic_inc ( & current -> signal -> live ) ; refcount_inc ( & current -> signal -> sigcnt ) ; task_join_group_stop ( p ) ; list_add_tail_rcu ( & p -> thread_group , & p -> group_leader -> thread_group ) ; list_add_tail_rcu ( & p -> thread_node , & p -> signal -> thread_head ) ; } attach_pid ( p , PIDTYPE_PID ) ; nr_threads ++ ; } total_forks ++ ; hlist_del_init ( & delayed . node ) ; spin_unlock ( & current -> sighand -> siglock ) ; syscall_tracepoint_update ( p ) ; write_unlock_irq ( & tasklist_lock ) ; proc_fork_connector ( p ) ; sched_post_fork ( p ) ; cgroup_post_fork ( p , args ) ; perf_event_fork ( p ) ; trace_task_newtask ( p , clone_flags ) ; uprobe_copy_process ( p , clone_flags ) ; copy_oom_score_adj ( clone_flags , p ) ; return p ; bad_fork_cancel_cgroup : spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; cgroup_cancel_fork ( p , args ) ; bad_fork_put_pidfd : if ( clone_flags & CLONE_PIDFD ) { fput ( pidfile ) ; put_unused_fd ( pidfd ) ; } bad_fork_free_pid : if ( pid != & init_struct_pid ) free_pid ( pid ) ; bad_fork_cleanup_thread : exit_thread ( p ) ; bad_fork_cleanup_io : if ( p -> io_context ) exit_io_context ( p ) ; bad_fork_cleanup_namespaces : exit_task_namespaces ( p ) ; bad_fork_cleanup_mm : if ( p -> mm ) { mm_clear_owner ( p -> mm , p ) ; mmput ( p -> mm ) ; } bad_fork_cleanup_signal : if ( ! ( clone_flags & CLONE_THREAD ) ) free_signal_struct ( p -> signal ) ; bad_fork_cleanup_sighand : __cleanup_sighand ( p -> sighand ) ; bad_fork_cleanup_fs : exit_fs ( p ) ; bad_fork_cleanup_files : exit_files ( p ) ; bad_fork_cleanup_semundo : exit_sem ( p ) ; bad_fork_cleanup_security : security_task_free ( p ) ; bad_fork_cleanup_audit : audit_free ( p ) ; bad_fork_cleanup_perf : perf_event_free_task ( p ) ; bad_fork_cleanup_policy : lockdep_free_task ( p ) ; # ifdef CONFIG_NUMA mpol_put ( p -> mempolicy ) ; bad_fork_cleanup_threadgroup_lock : # endif delayacct_tsk_free ( p ) ; bad_fork_cleanup_count : atomic_dec ( & p -> cred -> user -> processes ) ; exit_creds ( p ) ; bad_fork_free : p -> state = TASK_DEAD ; put_task_stack ( p ) ; delayed_free_task ( p ) ; fork_out : spin_lock_irq ( & current -> sighand -> siglock ) ; hlist_del_init ( & delayed . node ) ; spin_unlock_irq ( & current -> sighand -> siglock ) ; return ERR_PTR ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { p -> <S2SV_ModEnd> group_leader = current <S2SV_ModStart> } else { <S2SV_ModEnd> p -> group_leader <S2SV_ModStart> -> parent_exec_id ; if ( clone_flags & CLONE_THREAD ) p -> exit_signal = - 1 ; else p -> exit_signal = current -> group_leader -> exit_signal ; <S2SV_ModStart> -> self_exec_id ; p -> exit_signal = args -> exit_signal ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12990\n\n```\nCWE-835 static const u_char * ikev1_n_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , <S2SV_StartBug> const u_char * ep , uint32_t phase , uint32_t doi0 _U_ , <S2SV_EndBug> <S2SV_StartBug> uint32_t proto0 _U_ , int depth ) <S2SV_EndBug> { const struct ikev1_pl_n * p ; struct ikev1_pl_n n ; const u_char * cp ; const u_char * ep2 ; uint32_t doi ; uint32_t proto ; static const char * notify_error_str [ ] = { NULL , \"INVALID-PAYLOAD-TYPE\" , \"DOI-NOT-SUPPORTED\" , \"SITUATION-NOT-SUPPORTED\" , \"INVALID-COOKIE\" , \"INVALID-MAJOR-VERSION\" , \"INVALID-MINOR-VERSION\" , \"INVALID-EXCHANGE-TYPE\" , \"INVALID-FLAGS\" , \"INVALID-MESSAGE-ID\" , \"INVALID-PROTOCOL-ID\" , \"INVALID-SPI\" , \"INVALID-TRANSFORM-ID\" , \"ATTRIBUTES-NOT-SUPPORTED\" , \"NO-PROPOSAL-CHOSEN\" , \"BAD-PROPOSAL-SYNTAX\" , \"PAYLOAD-MALFORMED\" , \"INVALID-KEY-INFORMATION\" , \"INVALID-ID-INFORMATION\" , \"INVALID-CERT-ENCODING\" , \"INVALID-CERTIFICATE\" , \"CERT-TYPE-UNSUPPORTED\" , \"INVALID-CERT-AUTHORITY\" , \"INVALID-HASH-INFORMATION\" , \"AUTHENTICATION-FAILED\" , \"INVALID-SIGNATURE\" , \"ADDRESS-NOTIFICATION\" , \"NOTIFY-SA-LIFETIME\" , \"CERTIFICATE-UNAVAILABLE\" , \"UNSUPPORTED-EXCHANGE-TYPE\" , \"UNEQUAL-PAYLOAD-LENGTHS\" , } ; static const char * ipsec_notify_error_str [ ] = { \"RESERVED\" , } ; static const char * notify_status_str [ ] = { \"CONNECTED\" , } ; static const char * ipsec_notify_status_str [ ] = { \"RESPONDER-LIFETIME\" , \"REPLAY-STATUS\" , \"INITIAL-CONTACT\" , } ; # define NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( x ) , notify_error_str ) # define IPSEC_NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 8192 ) , ipsec_notify_error_str ) # define NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 16384 ) , notify_status_str ) # define IPSEC_NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 24576 ) , ipsec_notify_status_str ) ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; p = ( const struct ikev1_pl_n * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & n , ext , sizeof ( n ) ) ; doi = ntohl ( n . doi ) ; proto = n . prot_id ; if ( doi != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>doi=%d\" , doi ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%d\" , proto ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } return ( const u_char * ) ( p + 1 ) + n . spi_size ; } ND_PRINT ( ( ndo , \"<S2SV_blank>doi=ipsec\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%s\" , PROTOIDSTR ( proto ) ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 32768 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } cp = ( const u_char * ) ( p + 1 ) + n . spi_size ; ep2 = ( const u_char * ) p + item_len ; if ( cp < ep ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>orig=(\" ) ) ; <S2SV_EndBug> switch ( ntohs ( n . type ) ) { case IPSECDOI_NTYPE_RESPONDER_LIFETIME : { const struct attrmap * map = oakley_t_map ; <S2SV_StartBug> size_t nmap = sizeof ( oakley_t_map ) / sizeof ( oakley_t_map [ 0 ] ) ; <S2SV_EndBug> while ( cp < ep && cp < ep2 ) { cp = ikev1_attrmap_print ( ndo , cp , ( ep < ep2 ) ? ep : ep2 , map , nmap ) ; } <S2SV_StartBug> break ; <S2SV_EndBug> } <S2SV_StartBug> case IPSECDOI_NTYPE_REPLAY_STATUS : <S2SV_EndBug> ND_PRINT ( ( ndo , \"replay<S2SV_blank>detection<S2SV_blank>%sabled\" , EXTRACT_32BITS ( cp ) ? \"en\" : \"dis\" ) ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN : if ( ikev1_sub_print ( ndo , ISAKMP_NPTYPE_SA , ( const struct isakmp_gen * ) cp , ep , phase , doi , proto , depth ) == NULL ) return NULL ; break ; default : <S2SV_StartBug> isakmp_print ( ndo , cp , <S2SV_EndBug> item_len - sizeof ( * p ) - n . spi_size , NULL ) ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_EndBug> } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , uint32_t phase _U_ <S2SV_ModStart> , int depth _U_ <S2SV_ModStart> ep ) { <S2SV_ModEnd> switch ( ntohs <S2SV_ModStart> [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>attrs=(\" ) <S2SV_ModStart> ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_ModStart> case IPSECDOI_NTYPE_REPLAY_STATUS : ND_PRINT ( ( ndo , \"<S2SV_blank>status=(\" ) ) ; <S2SV_ModStart> ) ) ; ND_PRINT ( ( ndo , \")\" ) ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> ; default : if ( ndo -> ndo_vflag > 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>data=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( cp ) , ep - cp ) ) goto trunc ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; } else { if ( ! ike_show_somedata ( ndo , cp , ep ) ) goto trunc ; } break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11080\n\n```\nCWE-400 ssize_t nghttp2_session_mem_recv ( nghttp2_session * session , const uint8_t * in , size_t inlen ) { const uint8_t * first = in , * last = in + inlen ; nghttp2_inbound_frame * iframe = & session -> iframe ; size_t readlen ; ssize_t padlen ; int rv ; int busy = 0 ; nghttp2_frame_hd cont_hd ; nghttp2_stream * stream ; size_t pri_fieldlen ; nghttp2_mem * mem ; DEBUGF ( \"recv:<S2SV_blank>connection<S2SV_blank>recv_window_size=%d,<S2SV_blank>local_window=%d\\\\n\" , session -> recv_window_size , session -> local_window_size ) ; mem = & session -> mem ; rv = nghttp2_session_adjust_idle_stream ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( ! nghttp2_session_want_read ( session ) ) { return ( ssize_t ) inlen ; } for ( ; ; ) { switch ( iframe -> state ) { case NGHTTP2_IB_READ_CLIENT_MAGIC : readlen = nghttp2_min ( inlen , iframe -> payloadleft ) ; if ( memcmp ( & NGHTTP2_CLIENT_MAGIC [ NGHTTP2_CLIENT_MAGIC_LEN - iframe -> payloadleft ] , in , readlen ) != 0 ) { return NGHTTP2_ERR_BAD_CLIENT_MAGIC ; } iframe -> payloadleft -= readlen ; in += readlen ; if ( iframe -> payloadleft == 0 ) { session_inbound_frame_reset ( session ) ; iframe -> state = NGHTTP2_IB_READ_FIRST_SETTINGS ; } break ; case NGHTTP2_IB_READ_FIRST_SETTINGS : DEBUGF ( \"recv:<S2SV_blank>[IB_READ_FIRST_SETTINGS]\\\\n\" ) ; readlen = inbound_frame_buf_read ( iframe , in , last ) ; in += readlen ; if ( nghttp2_buf_mark_avail ( & iframe -> sbuf ) ) { return in - first ; } if ( iframe -> sbuf . pos [ 3 ] != NGHTTP2_SETTINGS || ( iframe -> sbuf . pos [ 4 ] & NGHTTP2_FLAG_ACK ) ) { rv = session_call_error_callback ( session , NGHTTP2_ERR_SETTINGS_EXPECTED , \"Remote<S2SV_blank>peer<S2SV_blank>returned<S2SV_blank>unexpected<S2SV_blank>data<S2SV_blank>while<S2SV_blank>we<S2SV_blank>expected<S2SV_blank>\" \"SETTINGS<S2SV_blank>frame.<S2SV_blank><S2SV_blank>Perhaps,<S2SV_blank>peer<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>HTTP/2<S2SV_blank>\" \"properly.\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"SETTINGS<S2SV_blank>expected\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } iframe -> state = NGHTTP2_IB_READ_HEAD ; case NGHTTP2_IB_READ_HEAD : { int on_begin_frame_called = 0 ; DEBUGF ( \"recv:<S2SV_blank>[IB_READ_HEAD]\\\\n\" ) ; readlen = inbound_frame_buf_read ( iframe , in , last ) ; in += readlen ; if ( nghttp2_buf_mark_avail ( & iframe -> sbuf ) ) { return in - first ; } nghttp2_frame_unpack_frame_hd ( & iframe -> frame . hd , iframe -> sbuf . pos ) ; iframe -> payloadleft = iframe -> frame . hd . length ; DEBUGF ( \"recv:<S2SV_blank>payloadlen=%zu,<S2SV_blank>type=%u,<S2SV_blank>flags=0x%02x,<S2SV_blank>stream_id=%d\\\\n\" , iframe -> frame . hd . length , iframe -> frame . hd . type , iframe -> frame . hd . flags , iframe -> frame . hd . stream_id ) ; if ( iframe -> frame . hd . length > session -> local_settings . max_frame_size ) { DEBUGF ( \"recv:<S2SV_blank>length<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large<S2SV_blank>%zu<S2SV_blank>><S2SV_blank>%u\\\\n\" , iframe -> frame . hd . length , session -> local_settings . max_frame_size ) ; rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_FRAME_SIZE_ERROR , \"too<S2SV_blank>large<S2SV_blank>frame<S2SV_blank>size\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } switch ( iframe -> frame . hd . type ) { case NGHTTP2_DATA : { DEBUGF ( \"recv:<S2SV_blank>DATA\\\\n\" ) ; iframe -> frame . hd . flags &= ( NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_PADDED ) ; busy = 1 ; rv = session_on_data_received_fail_fast ( session ) ; if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } if ( rv == NGHTTP2_ERR_IGN_PAYLOAD ) { DEBUGF ( \"recv:<S2SV_blank>DATA<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>stream_id=%d\\\\n\" , iframe -> frame . hd . stream_id ) ; iframe -> state = NGHTTP2_IB_IGN_DATA ; break ; } if ( nghttp2_is_fatal ( rv ) ) { return rv ; } rv = inbound_frame_handle_pad ( iframe , & iframe -> frame . hd ) ; if ( rv < 0 ) { rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"DATA:<S2SV_blank>insufficient<S2SV_blank>padding<S2SV_blank>space\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } if ( rv == 1 ) { iframe -> state = NGHTTP2_IB_READ_PAD_DATA ; break ; } iframe -> state = NGHTTP2_IB_READ_DATA ; break ; } case NGHTTP2_HEADERS : DEBUGF ( \"recv:<S2SV_blank>HEADERS\\\\n\" ) ; iframe -> frame . hd . flags &= ( NGHTTP2_FLAG_END_STREAM | NGHTTP2_FLAG_END_HEADERS | NGHTTP2_FLAG_PADDED | NGHTTP2_FLAG_PRIORITY ) ; rv = inbound_frame_handle_pad ( iframe , & iframe -> frame . hd ) ; if ( rv < 0 ) { rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"HEADERS:<S2SV_blank>insufficient<S2SV_blank>padding<S2SV_blank>space\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } if ( rv == 1 ) { iframe -> state = NGHTTP2_IB_READ_NBYTE ; break ; } pri_fieldlen = nghttp2_frame_priority_len ( iframe -> frame . hd . flags ) ; if ( pri_fieldlen > 0 ) { if ( iframe -> payloadleft < pri_fieldlen ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , pri_fieldlen ) ; break ; } rv = session_call_on_begin_frame ( session , & iframe -> frame . hd ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } on_begin_frame_called = 1 ; rv = session_process_headers_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } busy = 1 ; if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } if ( rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE ) { rv = nghttp2_session_add_rst_stream ( session , iframe -> frame . hd . stream_id , NGHTTP2_INTERNAL_ERROR ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } iframe -> state = NGHTTP2_IB_IGN_HEADER_BLOCK ; break ; } if ( rv == NGHTTP2_ERR_IGN_HEADER_BLOCK ) { iframe -> state = NGHTTP2_IB_IGN_HEADER_BLOCK ; break ; } iframe -> state = NGHTTP2_IB_READ_HEADER_BLOCK ; break ; case NGHTTP2_PRIORITY : DEBUGF ( \"recv:<S2SV_blank>PRIORITY\\\\n\" ) ; iframe -> frame . hd . flags = NGHTTP2_FLAG_NONE ; if ( iframe -> payloadleft != NGHTTP2_PRIORITY_SPECLEN ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , NGHTTP2_PRIORITY_SPECLEN ) ; break ; case NGHTTP2_RST_STREAM : case NGHTTP2_WINDOW_UPDATE : # ifdef DEBUGBUILD switch ( iframe -> frame . hd . type ) { case NGHTTP2_RST_STREAM : DEBUGF ( \"recv:<S2SV_blank>RST_STREAM\\\\n\" ) ; break ; case NGHTTP2_WINDOW_UPDATE : DEBUGF ( \"recv:<S2SV_blank>WINDOW_UPDATE\\\\n\" ) ; break ; } # endif iframe -> frame . hd . flags = NGHTTP2_FLAG_NONE ; if ( iframe -> payloadleft != 4 ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , 4 ) ; break ; case NGHTTP2_SETTINGS : DEBUGF ( \"recv:<S2SV_blank>SETTINGS\\\\n\" ) ; iframe -> frame . hd . flags &= NGHTTP2_FLAG_ACK ; if ( ( iframe -> frame . hd . length % NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH ) || ( ( iframe -> frame . hd . flags & NGHTTP2_FLAG_ACK ) && iframe -> payloadleft > 0 ) ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_SETTINGS ; if ( iframe -> payloadleft ) { nghttp2_settings_entry * min_header_table_size_entry ; iframe -> max_niv = iframe -> frame . hd . length / NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH + 1 ; <S2SV_StartBug> iframe -> iv = nghttp2_mem_malloc ( mem , sizeof ( nghttp2_settings_entry ) * <S2SV_EndBug> iframe -> max_niv ) ; if ( ! iframe -> iv ) { return NGHTTP2_ERR_NOMEM ; } min_header_table_size_entry = & iframe -> iv [ iframe -> max_niv - 1 ] ; min_header_table_size_entry -> settings_id = NGHTTP2_SETTINGS_HEADER_TABLE_SIZE ; min_header_table_size_entry -> value = UINT32_MAX ; inbound_frame_set_mark ( iframe , NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH ) ; break ; } busy = 1 ; inbound_frame_set_mark ( iframe , 0 ) ; break ; case NGHTTP2_PUSH_PROMISE : DEBUGF ( \"recv:<S2SV_blank>PUSH_PROMISE\\\\n\" ) ; iframe -> frame . hd . flags &= ( NGHTTP2_FLAG_END_HEADERS | NGHTTP2_FLAG_PADDED ) ; rv = inbound_frame_handle_pad ( iframe , & iframe -> frame . hd ) ; if ( rv < 0 ) { rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"PUSH_PROMISE:<S2SV_blank>insufficient<S2SV_blank>padding<S2SV_blank>space\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } if ( rv == 1 ) { iframe -> state = NGHTTP2_IB_READ_NBYTE ; break ; } if ( iframe -> payloadleft < 4 ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , 4 ) ; break ; case NGHTTP2_PING : DEBUGF ( \"recv:<S2SV_blank>PING\\\\n\" ) ; iframe -> frame . hd . flags &= NGHTTP2_FLAG_ACK ; if ( iframe -> payloadleft != 8 ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , 8 ) ; break ; case NGHTTP2_GOAWAY : DEBUGF ( \"recv:<S2SV_blank>GOAWAY\\\\n\" ) ; iframe -> frame . hd . flags = NGHTTP2_FLAG_NONE ; if ( iframe -> payloadleft < 8 ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , 8 ) ; break ; case NGHTTP2_CONTINUATION : DEBUGF ( \"recv:<S2SV_blank>unexpected<S2SV_blank>CONTINUATION\\\\n\" ) ; rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"CONTINUATION:<S2SV_blank>unexpected\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; default : DEBUGF ( \"recv:<S2SV_blank>extension<S2SV_blank>frame\\\\n\" ) ; if ( check_ext_type_set ( session -> user_recv_ext_types , iframe -> frame . hd . type ) ) { if ( ! session -> callbacks . unpack_extension_callback ) { busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_PAYLOAD ; break ; } busy = 1 ; iframe -> state = NGHTTP2_IB_READ_EXTENSION_PAYLOAD ; break ; } else { switch ( iframe -> frame . hd . type ) { case NGHTTP2_ALTSVC : if ( ( session -> builtin_recv_ext_types & NGHTTP2_TYPEMASK_ALTSVC ) == 0 ) { busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_PAYLOAD ; break ; } DEBUGF ( \"recv:<S2SV_blank>ALTSVC\\\\n\" ) ; iframe -> frame . hd . flags = NGHTTP2_FLAG_NONE ; iframe -> frame . ext . payload = & iframe -> ext_frame_payload . altsvc ; if ( session -> server ) { busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_PAYLOAD ; break ; } if ( iframe -> payloadleft < 2 ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } busy = 1 ; iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , 2 ) ; break ; case NGHTTP2_ORIGIN : if ( ! ( session -> builtin_recv_ext_types & NGHTTP2_TYPEMASK_ORIGIN ) ) { busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_PAYLOAD ; break ; } DEBUGF ( \"recv:<S2SV_blank>ORIGIN\\\\n\" ) ; iframe -> frame . ext . payload = & iframe -> ext_frame_payload . origin ; if ( session -> server || iframe -> frame . hd . stream_id || ( iframe -> frame . hd . flags & 0xf0 ) ) { busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_PAYLOAD ; break ; } iframe -> frame . hd . flags = NGHTTP2_FLAG_NONE ; if ( iframe -> payloadleft ) { iframe -> raw_lbuf = nghttp2_mem_malloc ( mem , iframe -> payloadleft ) ; if ( iframe -> raw_lbuf == NULL ) { return NGHTTP2_ERR_NOMEM ; } nghttp2_buf_wrap_init ( & iframe -> lbuf , iframe -> raw_lbuf , iframe -> payloadleft ) ; } else { busy = 1 ; } iframe -> state = NGHTTP2_IB_READ_ORIGIN_PAYLOAD ; break ; default : busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_PAYLOAD ; break ; } } } if ( ! on_begin_frame_called ) { switch ( iframe -> state ) { case NGHTTP2_IB_IGN_HEADER_BLOCK : case NGHTTP2_IB_IGN_PAYLOAD : case NGHTTP2_IB_FRAME_SIZE_ERROR : case NGHTTP2_IB_IGN_DATA : case NGHTTP2_IB_IGN_ALL : break ; default : rv = session_call_on_begin_frame ( session , & iframe -> frame . hd ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } } } break ; } case NGHTTP2_IB_READ_NBYTE : DEBUGF ( \"recv:<S2SV_blank>[IB_READ_NBYTE]\\\\n\" ) ; readlen = inbound_frame_buf_read ( iframe , in , last ) ; in += readlen ; iframe -> payloadleft -= readlen ; DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu,<S2SV_blank>left=%zd\\\\n\" , readlen , iframe -> payloadleft , nghttp2_buf_mark_avail ( & iframe -> sbuf ) ) ; if ( nghttp2_buf_mark_avail ( & iframe -> sbuf ) ) { return in - first ; } switch ( iframe -> frame . hd . type ) { case NGHTTP2_HEADERS : if ( iframe -> padlen == 0 && ( iframe -> frame . hd . flags & NGHTTP2_FLAG_PADDED ) ) { pri_fieldlen = nghttp2_frame_priority_len ( iframe -> frame . hd . flags ) ; padlen = inbound_frame_compute_pad ( iframe ) ; if ( padlen < 0 || ( size_t ) padlen + pri_fieldlen > 1 + iframe -> payloadleft ) { rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"HEADERS:<S2SV_blank>invalid<S2SV_blank>padding\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } iframe -> frame . headers . padlen = ( size_t ) padlen ; if ( pri_fieldlen > 0 ) { if ( iframe -> payloadleft < pri_fieldlen ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , pri_fieldlen ) ; break ; } else { inbound_frame_set_mark ( iframe , 0 ) ; } } rv = session_process_headers_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } busy = 1 ; if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } if ( rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE ) { rv = nghttp2_session_add_rst_stream ( session , iframe -> frame . hd . stream_id , NGHTTP2_INTERNAL_ERROR ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } iframe -> state = NGHTTP2_IB_IGN_HEADER_BLOCK ; break ; } if ( rv == NGHTTP2_ERR_IGN_HEADER_BLOCK ) { iframe -> state = NGHTTP2_IB_IGN_HEADER_BLOCK ; break ; } iframe -> state = NGHTTP2_IB_READ_HEADER_BLOCK ; break ; case NGHTTP2_PRIORITY : rv = session_process_priority_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_RST_STREAM : rv = session_process_rst_stream_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_PUSH_PROMISE : if ( iframe -> padlen == 0 && ( iframe -> frame . hd . flags & NGHTTP2_FLAG_PADDED ) ) { padlen = inbound_frame_compute_pad ( iframe ) ; if ( padlen < 0 || ( size_t ) padlen + 4 > 1 + iframe -> payloadleft ) { rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"PUSH_PROMISE:<S2SV_blank>invalid<S2SV_blank>padding\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } iframe -> frame . push_promise . padlen = ( size_t ) padlen ; if ( iframe -> payloadleft < 4 ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } iframe -> state = NGHTTP2_IB_READ_NBYTE ; inbound_frame_set_mark ( iframe , 4 ) ; break ; } rv = session_process_push_promise_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } busy = 1 ; if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } if ( rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE ) { rv = nghttp2_session_add_rst_stream ( session , iframe -> frame . push_promise . promised_stream_id , NGHTTP2_INTERNAL_ERROR ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } iframe -> state = NGHTTP2_IB_IGN_HEADER_BLOCK ; break ; } if ( rv == NGHTTP2_ERR_IGN_HEADER_BLOCK ) { iframe -> state = NGHTTP2_IB_IGN_HEADER_BLOCK ; break ; } iframe -> state = NGHTTP2_IB_READ_HEADER_BLOCK ; break ; case NGHTTP2_PING : rv = session_process_ping_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_GOAWAY : { size_t debuglen ; debuglen = iframe -> frame . hd . length - 8 ; if ( debuglen > 0 ) { iframe -> raw_lbuf = nghttp2_mem_malloc ( mem , debuglen ) ; if ( iframe -> raw_lbuf == NULL ) { return NGHTTP2_ERR_NOMEM ; } nghttp2_buf_wrap_init ( & iframe -> lbuf , iframe -> raw_lbuf , debuglen ) ; } busy = 1 ; iframe -> state = NGHTTP2_IB_READ_GOAWAY_DEBUG ; break ; } case NGHTTP2_WINDOW_UPDATE : rv = session_process_window_update_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_ALTSVC : { size_t origin_len ; origin_len = nghttp2_get_uint16 ( iframe -> sbuf . pos ) ; DEBUGF ( \"recv:<S2SV_blank>origin_len=%zu\\\\n\" , origin_len ) ; if ( origin_len > iframe -> payloadleft ) { busy = 1 ; iframe -> state = NGHTTP2_IB_FRAME_SIZE_ERROR ; break ; } if ( iframe -> frame . hd . length > 2 ) { iframe -> raw_lbuf = nghttp2_mem_malloc ( mem , iframe -> frame . hd . length - 2 ) ; if ( iframe -> raw_lbuf == NULL ) { return NGHTTP2_ERR_NOMEM ; } nghttp2_buf_wrap_init ( & iframe -> lbuf , iframe -> raw_lbuf , iframe -> frame . hd . length ) ; } busy = 1 ; iframe -> state = NGHTTP2_IB_READ_ALTSVC_PAYLOAD ; break ; } default : session_inbound_frame_reset ( session ) ; break ; } break ; case NGHTTP2_IB_READ_HEADER_BLOCK : case NGHTTP2_IB_IGN_HEADER_BLOCK : { ssize_t data_readlen ; size_t trail_padlen ; int final ; # ifdef DEBUGBUILD if ( iframe -> state == NGHTTP2_IB_READ_HEADER_BLOCK ) { DEBUGF ( \"recv:<S2SV_blank>[IB_READ_HEADER_BLOCK]\\\\n\" ) ; } else { DEBUGF ( \"recv:<S2SV_blank>[IB_IGN_HEADER_BLOCK]\\\\n\" ) ; } # endif readlen = inbound_frame_payload_readlen ( iframe , in , last ) ; DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft - readlen ) ; data_readlen = inbound_frame_effective_readlen ( iframe , iframe -> payloadleft - readlen , readlen ) ; if ( data_readlen == - 1 ) { data_readlen = 0 ; } trail_padlen = nghttp2_frame_trail_padlen ( & iframe -> frame , iframe -> padlen ) ; final = ( iframe -> frame . hd . flags & NGHTTP2_FLAG_END_HEADERS ) && iframe -> payloadleft - ( size_t ) data_readlen == trail_padlen ; if ( data_readlen > 0 || ( data_readlen == 0 && final ) ) { size_t hd_proclen = 0 ; DEBUGF ( \"recv:<S2SV_blank>block<S2SV_blank>final=%d\\\\n\" , final ) ; rv = inflate_header_block ( session , & iframe -> frame , & hd_proclen , ( uint8_t * ) in , ( size_t ) data_readlen , final , iframe -> state == NGHTTP2_IB_READ_HEADER_BLOCK ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } if ( rv == NGHTTP2_ERR_PAUSE ) { in += hd_proclen ; iframe -> payloadleft -= hd_proclen ; return in - first ; } if ( rv == NGHTTP2_ERR_TEMPORAL_CALLBACK_FAILURE ) { in += hd_proclen ; iframe -> payloadleft -= hd_proclen ; rv = nghttp2_session_add_rst_stream ( session , iframe -> frame . hd . type == NGHTTP2_PUSH_PROMISE ? iframe -> frame . push_promise . promised_stream_id : iframe -> frame . hd . stream_id , NGHTTP2_INTERNAL_ERROR ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_HEADER_BLOCK ; break ; } in += readlen ; iframe -> payloadleft -= readlen ; if ( rv == NGHTTP2_ERR_HEADER_COMP ) { if ( iframe -> payloadleft == 0 ) { session_inbound_frame_reset ( session ) ; } else { busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_PAYLOAD ; } break ; } } else { in += readlen ; iframe -> payloadleft -= readlen ; } if ( iframe -> payloadleft ) { break ; } if ( ( iframe -> frame . hd . flags & NGHTTP2_FLAG_END_HEADERS ) == 0 ) { inbound_frame_set_mark ( iframe , NGHTTP2_FRAME_HDLEN ) ; iframe -> padlen = 0 ; if ( iframe -> state == NGHTTP2_IB_READ_HEADER_BLOCK ) { iframe -> state = NGHTTP2_IB_EXPECT_CONTINUATION ; } else { iframe -> state = NGHTTP2_IB_IGN_CONTINUATION ; } } else { if ( iframe -> state == NGHTTP2_IB_READ_HEADER_BLOCK ) { rv = session_after_header_block_received ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } } session_inbound_frame_reset ( session ) ; } break ; } case NGHTTP2_IB_IGN_PAYLOAD : DEBUGF ( \"recv:<S2SV_blank>[IB_IGN_PAYLOAD]\\\\n\" ) ; readlen = inbound_frame_payload_readlen ( iframe , in , last ) ; iframe -> payloadleft -= readlen ; in += readlen ; DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft ) ; if ( iframe -> payloadleft ) { break ; } switch ( iframe -> frame . hd . type ) { case NGHTTP2_HEADERS : case NGHTTP2_PUSH_PROMISE : case NGHTTP2_CONTINUATION : session -> hd_inflater . ctx . bad = 1 ; break ; default : break ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_IB_FRAME_SIZE_ERROR : DEBUGF ( \"recv:<S2SV_blank>[IB_FRAME_SIZE_ERROR]\\\\n\" ) ; rv = session_handle_frame_size_error ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } assert ( iframe -> state == NGHTTP2_IB_IGN_ALL ) ; return ( ssize_t ) inlen ; case NGHTTP2_IB_READ_SETTINGS : DEBUGF ( \"recv:<S2SV_blank>[IB_READ_SETTINGS]\\\\n\" ) ; readlen = inbound_frame_buf_read ( iframe , in , last ) ; iframe -> payloadleft -= readlen ; in += readlen ; DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft ) ; if ( nghttp2_buf_mark_avail ( & iframe -> sbuf ) ) { break ; } if ( readlen > 0 ) { inbound_frame_set_settings_entry ( iframe ) ; } if ( iframe -> payloadleft ) { inbound_frame_set_mark ( iframe , NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH ) ; break ; } rv = session_process_settings_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_IB_READ_GOAWAY_DEBUG : DEBUGF ( \"recv:<S2SV_blank>[IB_READ_GOAWAY_DEBUG]\\\\n\" ) ; readlen = inbound_frame_payload_readlen ( iframe , in , last ) ; if ( readlen > 0 ) { iframe -> lbuf . last = nghttp2_cpymem ( iframe -> lbuf . last , in , readlen ) ; iframe -> payloadleft -= readlen ; in += readlen ; } DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft ) ; if ( iframe -> payloadleft ) { assert ( nghttp2_buf_avail ( & iframe -> lbuf ) > 0 ) ; break ; } rv = session_process_goaway_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_IB_EXPECT_CONTINUATION : case NGHTTP2_IB_IGN_CONTINUATION : # ifdef DEBUGBUILD if ( iframe -> state == NGHTTP2_IB_EXPECT_CONTINUATION ) { fprintf ( stderr , \"recv:<S2SV_blank>[IB_EXPECT_CONTINUATION]\\\\n\" ) ; } else { fprintf ( stderr , \"recv:<S2SV_blank>[IB_IGN_CONTINUATION]\\\\n\" ) ; } # endif readlen = inbound_frame_buf_read ( iframe , in , last ) ; in += readlen ; if ( nghttp2_buf_mark_avail ( & iframe -> sbuf ) ) { return in - first ; } nghttp2_frame_unpack_frame_hd ( & cont_hd , iframe -> sbuf . pos ) ; iframe -> payloadleft = cont_hd . length ; DEBUGF ( \"recv:<S2SV_blank>payloadlen=%zu,<S2SV_blank>type=%u,<S2SV_blank>flags=0x%02x,<S2SV_blank>stream_id=%d\\\\n\" , cont_hd . length , cont_hd . type , cont_hd . flags , cont_hd . stream_id ) ; if ( cont_hd . type != NGHTTP2_CONTINUATION || cont_hd . stream_id != iframe -> frame . hd . stream_id ) { DEBUGF ( \"recv:<S2SV_blank>expected<S2SV_blank>stream_id=%d,<S2SV_blank>type=%d,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>stream_id=%d,<S2SV_blank>\" \"type=%u\\\\n\" , iframe -> frame . hd . stream_id , NGHTTP2_CONTINUATION , cont_hd . stream_id , cont_hd . type ) ; rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"unexpected<S2SV_blank>non-CONTINUATION<S2SV_blank>frame<S2SV_blank>or<S2SV_blank>stream_id<S2SV_blank>is<S2SV_blank>invalid\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } iframe -> frame . hd . flags = ( uint8_t ) ( iframe -> frame . hd . flags | ( cont_hd . flags & NGHTTP2_FLAG_END_HEADERS ) ) ; iframe -> frame . hd . length += cont_hd . length ; busy = 1 ; if ( iframe -> state == NGHTTP2_IB_EXPECT_CONTINUATION ) { iframe -> state = NGHTTP2_IB_READ_HEADER_BLOCK ; rv = session_call_on_begin_frame ( session , & cont_hd ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } } else { iframe -> state = NGHTTP2_IB_IGN_HEADER_BLOCK ; } break ; case NGHTTP2_IB_READ_PAD_DATA : DEBUGF ( \"recv:<S2SV_blank>[IB_READ_PAD_DATA]\\\\n\" ) ; readlen = inbound_frame_buf_read ( iframe , in , last ) ; in += readlen ; iframe -> payloadleft -= readlen ; DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu,<S2SV_blank>left=%zu\\\\n\" , readlen , iframe -> payloadleft , nghttp2_buf_mark_avail ( & iframe -> sbuf ) ) ; if ( nghttp2_buf_mark_avail ( & iframe -> sbuf ) ) { return in - first ; } rv = nghttp2_session_update_recv_connection_window_size ( session , readlen ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } rv = nghttp2_session_consume ( session , iframe -> frame . hd . stream_id , readlen ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } stream = nghttp2_session_get_stream ( session , iframe -> frame . hd . stream_id ) ; if ( stream ) { rv = nghttp2_session_update_recv_stream_window_size ( session , stream , readlen , iframe -> payloadleft || ( iframe -> frame . hd . flags & NGHTTP2_FLAG_END_STREAM ) == 0 ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } } busy = 1 ; padlen = inbound_frame_compute_pad ( iframe ) ; if ( padlen < 0 ) { rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_PROTOCOL_ERROR , \"DATA:<S2SV_blank>invalid<S2SV_blank>padding\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; } iframe -> frame . data . padlen = ( size_t ) padlen ; iframe -> state = NGHTTP2_IB_READ_DATA ; break ; case NGHTTP2_IB_READ_DATA : stream = nghttp2_session_get_stream ( session , iframe -> frame . hd . stream_id ) ; if ( ! stream ) { busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_DATA ; break ; } DEBUGF ( \"recv:<S2SV_blank>[IB_READ_DATA]\\\\n\" ) ; readlen = inbound_frame_payload_readlen ( iframe , in , last ) ; iframe -> payloadleft -= readlen ; in += readlen ; DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft ) ; if ( readlen > 0 ) { ssize_t data_readlen ; rv = nghttp2_session_update_recv_connection_window_size ( session , readlen ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } rv = nghttp2_session_update_recv_stream_window_size ( session , stream , readlen , iframe -> payloadleft || ( iframe -> frame . hd . flags & NGHTTP2_FLAG_END_STREAM ) == 0 ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } data_readlen = inbound_frame_effective_readlen ( iframe , iframe -> payloadleft , readlen ) ; if ( data_readlen == - 1 ) { data_readlen = 0 ; } padlen = ( ssize_t ) readlen - data_readlen ; if ( padlen > 0 ) { rv = nghttp2_session_consume ( session , iframe -> frame . hd . stream_id , ( size_t ) padlen ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } } DEBUGF ( \"recv:<S2SV_blank>data_readlen=%zd\\\\n\" , data_readlen ) ; if ( data_readlen > 0 ) { if ( session_enforce_http_messaging ( session ) ) { if ( nghttp2_http_on_data_chunk ( stream , ( size_t ) data_readlen ) != 0 ) { if ( session -> opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE ) { rv = session_update_connection_consumed_size ( session , ( size_t ) data_readlen ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_DATA ) { return ( ssize_t ) inlen ; } } rv = nghttp2_session_add_rst_stream ( session , iframe -> frame . hd . stream_id , NGHTTP2_PROTOCOL_ERROR ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_DATA ; break ; } } if ( session -> callbacks . on_data_chunk_recv_callback ) { rv = session -> callbacks . on_data_chunk_recv_callback ( session , iframe -> frame . hd . flags , iframe -> frame . hd . stream_id , in - readlen , ( size_t ) data_readlen , session -> user_data ) ; if ( rv == NGHTTP2_ERR_PAUSE ) { return in - first ; } if ( nghttp2_is_fatal ( rv ) ) { return NGHTTP2_ERR_CALLBACK_FAILURE ; } } } } if ( iframe -> payloadleft ) { break ; } rv = session_process_data_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_IB_IGN_DATA : DEBUGF ( \"recv:<S2SV_blank>[IB_IGN_DATA]\\\\n\" ) ; readlen = inbound_frame_payload_readlen ( iframe , in , last ) ; iframe -> payloadleft -= readlen ; in += readlen ; DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft ) ; if ( readlen > 0 ) { rv = nghttp2_session_update_recv_connection_window_size ( session , readlen ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } if ( session -> opt_flags & NGHTTP2_OPTMASK_NO_AUTO_WINDOW_UPDATE ) { rv = session_update_connection_consumed_size ( session , readlen ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } } } if ( iframe -> payloadleft ) { break ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_IB_IGN_ALL : return ( ssize_t ) inlen ; case NGHTTP2_IB_READ_EXTENSION_PAYLOAD : DEBUGF ( \"recv:<S2SV_blank>[IB_READ_EXTENSION_PAYLOAD]\\\\n\" ) ; readlen = inbound_frame_payload_readlen ( iframe , in , last ) ; iframe -> payloadleft -= readlen ; in += readlen ; DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft ) ; if ( readlen > 0 ) { rv = session_call_on_extension_chunk_recv_callback ( session , in - readlen , readlen ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( rv != 0 ) { busy = 1 ; iframe -> state = NGHTTP2_IB_IGN_PAYLOAD ; break ; } } if ( iframe -> payloadleft > 0 ) { break ; } rv = session_process_extension_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_IB_READ_ALTSVC_PAYLOAD : DEBUGF ( \"recv:<S2SV_blank>[IB_READ_ALTSVC_PAYLOAD]\\\\n\" ) ; readlen = inbound_frame_payload_readlen ( iframe , in , last ) ; if ( readlen > 0 ) { iframe -> lbuf . last = nghttp2_cpymem ( iframe -> lbuf . last , in , readlen ) ; iframe -> payloadleft -= readlen ; in += readlen ; } DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft ) ; if ( iframe -> payloadleft ) { assert ( nghttp2_buf_avail ( & iframe -> lbuf ) > 0 ) ; break ; } rv = session_process_altsvc_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } session_inbound_frame_reset ( session ) ; break ; case NGHTTP2_IB_READ_ORIGIN_PAYLOAD : DEBUGF ( \"recv:<S2SV_blank>[IB_READ_ORIGIN_PAYLOAD]\\\\n\" ) ; readlen = inbound_frame_payload_readlen ( iframe , in , last ) ; if ( readlen > 0 ) { iframe -> lbuf . last = nghttp2_cpymem ( iframe -> lbuf . last , in , readlen ) ; iframe -> payloadleft -= readlen ; in += readlen ; } DEBUGF ( \"recv:<S2SV_blank>readlen=%zu,<S2SV_blank>payloadleft=%zu\\\\n\" , readlen , iframe -> payloadleft ) ; if ( iframe -> payloadleft ) { assert ( nghttp2_buf_avail ( & iframe -> lbuf ) > 0 ) ; break ; } rv = session_process_origin_frame ( session ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } if ( iframe -> state == NGHTTP2_IB_IGN_ALL ) { return ( ssize_t ) inlen ; } session_inbound_frame_reset ( session ) ; break ; } if ( ! busy && in == last ) { break ; } busy = 0 ; } assert ( in == last ) ; return in - first ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 1 ; if ( iframe -> max_niv - 1 > session -> max_settings ) { rv = nghttp2_session_terminate_session_with_reason ( session , NGHTTP2_ENHANCE_YOUR_CALM , \"SETTINGS:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>setting<S2SV_blank>entries\" ) ; if ( nghttp2_is_fatal ( rv ) ) { return rv ; } return ( ssize_t ) inlen ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 STATIC int xfs_ioctl_setattr ( xfs_inode_t * ip , struct fsxattr * fa , int mask ) { struct xfs_mount * mp = ip -> i_mount ; struct xfs_trans * tp ; unsigned int lock_flags = 0 ; struct xfs_dquot * udqp = NULL ; struct xfs_dquot * pdqp = NULL ; struct xfs_dquot * olddquot = NULL ; int code ; trace_xfs_ioctl_setattr ( ip ) ; if ( mp -> m_flags & XFS_MOUNT_RDONLY ) return XFS_ERROR ( EROFS ) ; if ( XFS_FORCED_SHUTDOWN ( mp ) ) return XFS_ERROR ( EIO ) ; if ( ( mask & FSX_PROJID ) && ( fa -> fsx_projid > ( __uint16_t ) - 1 ) && ! xfs_sb_version_hasprojid32bit ( & ip -> i_mount -> m_sb ) ) return XFS_ERROR ( EINVAL ) ; if ( XFS_IS_QUOTA_ON ( mp ) && ( mask & FSX_PROJID ) ) { code = xfs_qm_vop_dqalloc ( ip , ip -> i_d . di_uid , ip -> i_d . di_gid , fa -> fsx_projid , XFS_QMOPT_PQUOTA , & udqp , NULL , & pdqp ) ; if ( code ) return code ; } tp = xfs_trans_alloc ( mp , XFS_TRANS_SETATTR_NOT_SIZE ) ; code = xfs_trans_reserve ( tp , & M_RES ( mp ) -> tr_ichange , 0 , 0 ) ; if ( code ) goto error_return ; lock_flags = XFS_ILOCK_EXCL ; xfs_ilock ( ip , lock_flags ) ; if ( ! inode_owner_or_capable ( VFS_I ( ip ) ) ) { code = XFS_ERROR ( EPERM ) ; goto error_return ; } if ( mask & FSX_PROJID ) { if ( current_user_ns ( ) != & init_user_ns ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } if ( XFS_IS_QUOTA_RUNNING ( mp ) && XFS_IS_PQUOTA_ON ( mp ) && xfs_get_projid ( ip ) != fa -> fsx_projid ) { ASSERT ( tp ) ; code = xfs_qm_vop_chown_reserve ( tp , ip , udqp , NULL , pdqp , capable ( CAP_FOWNER ) ? XFS_QMOPT_FORCE_RES : 0 ) ; if ( code ) goto error_return ; } } if ( mask & FSX_EXTSIZE ) { if ( ip -> i_d . di_nextents && ( ( ip -> i_d . di_extsize << mp -> m_sb . sb_blocklog ) != fa -> fsx_extsize ) ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } if ( fa -> fsx_extsize != 0 ) { xfs_extlen_t size ; xfs_fsblock_t extsize_fsb ; extsize_fsb = XFS_B_TO_FSB ( mp , fa -> fsx_extsize ) ; if ( extsize_fsb > MAXEXTLEN ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } if ( XFS_IS_REALTIME_INODE ( ip ) || ( ( mask & FSX_XFLAGS ) && ( fa -> fsx_xflags & XFS_XFLAG_REALTIME ) ) ) { size = mp -> m_sb . sb_rextsize << mp -> m_sb . sb_blocklog ; } else { size = mp -> m_sb . sb_blocksize ; if ( extsize_fsb > mp -> m_sb . sb_agblocks / 2 ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } } if ( fa -> fsx_extsize % size ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } } } if ( mask & FSX_XFLAGS ) { if ( ( ip -> i_d . di_nextents || ip -> i_delayed_blks ) && ( XFS_IS_REALTIME_INODE ( ip ) ) != ( fa -> fsx_xflags & XFS_XFLAG_REALTIME ) ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } if ( ( fa -> fsx_xflags & XFS_XFLAG_REALTIME ) ) { if ( ( mp -> m_sb . sb_rblocks == 0 ) || ( mp -> m_sb . sb_rextsize == 0 ) || ( ip -> i_d . di_extsize % mp -> m_sb . sb_rextsize ) ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } } if ( ( ip -> i_d . di_flags & ( XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND ) || ( fa -> fsx_xflags & ( XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND ) ) ) && ! capable ( CAP_LINUX_IMMUTABLE ) ) { code = XFS_ERROR ( EPERM ) ; goto error_return ; } } xfs_trans_ijoin ( tp , ip , 0 ) ; if ( mask & FSX_PROJID ) { if ( ( ip -> i_d . di_mode & ( S_ISUID | S_ISGID ) ) && <S2SV_StartBug> ! inode_capable ( VFS_I ( ip ) , CAP_FSETID ) ) <S2SV_EndBug> ip -> i_d . di_mode &= ~ ( S_ISUID | S_ISGID ) ; if ( xfs_get_projid ( ip ) != fa -> fsx_projid ) { if ( XFS_IS_QUOTA_RUNNING ( mp ) && XFS_IS_PQUOTA_ON ( mp ) ) { olddquot = xfs_qm_vop_chown ( tp , ip , & ip -> i_pdquot , pdqp ) ; } xfs_set_projid ( ip , fa -> fsx_projid ) ; if ( ip -> i_d . di_version == 1 ) xfs_bump_ino_vers2 ( tp , ip ) ; } } if ( mask & FSX_EXTSIZE ) ip -> i_d . di_extsize = fa -> fsx_extsize >> mp -> m_sb . sb_blocklog ; if ( mask & FSX_XFLAGS ) { xfs_set_diflags ( ip , fa -> fsx_xflags ) ; xfs_diflags_to_linux ( ip ) ; } xfs_trans_ichgtime ( tp , ip , XFS_ICHGTIME_CHG ) ; xfs_trans_log_inode ( tp , ip , XFS_ILOG_CORE ) ; XFS_STATS_INC ( xs_ig_attrchg ) ; if ( mp -> m_flags & XFS_MOUNT_WSYNC ) xfs_trans_set_sync ( tp ) ; code = xfs_trans_commit ( tp , 0 ) ; xfs_iunlock ( ip , lock_flags ) ; xfs_qm_dqrele ( olddquot ) ; xfs_qm_dqrele ( udqp ) ; xfs_qm_dqrele ( pdqp ) ; return code ; error_return : xfs_qm_dqrele ( udqp ) ; xfs_qm_dqrele ( pdqp ) ; xfs_trans_cancel ( tp , 0 ) ; if ( lock_flags ) xfs_iunlock ( ip , lock_flags ) ; return code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) && ! capable_wrt_inode_uidgid <S2SV_ModEnd> ( VFS_I (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static struct nfs4_state * nfs4_opendata_to_nfs4_state ( struct nfs4_opendata * data ) { struct inode * inode ; struct nfs4_state * state = NULL ; struct nfs_delegation * delegation ; int ret ; if ( ! data -> rpc_done ) { state = nfs4_try_open_cached ( data ) ; goto out ; } ret = - EAGAIN ; if ( ! ( data -> f_attr . valid & NFS_ATTR_FATTR ) ) goto err ; inode = nfs_fhget ( data -> dir -> d_sb , & data -> o_res . fh , & data -> f_attr ) ; ret = PTR_ERR ( inode ) ; if ( IS_ERR ( inode ) ) goto err ; ret = - ENOMEM ; state = nfs4_get_open_state ( inode , data -> owner ) ; if ( state == NULL ) goto err_put_inode ; if ( data -> o_res . delegation_type != 0 ) { int delegation_flags = 0 ; rcu_read_lock ( ) ; delegation = rcu_dereference ( NFS_I ( inode ) -> delegation ) ; if ( delegation ) delegation_flags = delegation -> flags ; rcu_read_unlock ( ) ; if ( ( delegation_flags & 1UL << NFS_DELEGATION_NEED_RECLAIM ) == 0 ) nfs_inode_set_delegation ( state -> inode , data -> owner -> so_cred , & data -> o_res ) ; else nfs_inode_reclaim_delegation ( state -> inode , data -> owner -> so_cred , & data -> o_res ) ; } update_open_stateid ( state , & data -> o_res . stateid , NULL , <S2SV_StartBug> data -> o_arg . open_flags ) ; <S2SV_EndBug> iput ( inode ) ; out : return state ; err_put_inode : iput ( inode ) ; err : return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> o_arg . fmode <S2SV_ModEnd> ) ; iput\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static MagickBooleanType GetEXIFProperty ( const Image * image , const char * property , ExceptionInfo * exception ) { # define MaxDirectoryStack 16 # define EXIF_DELIMITER \"\\\\n\" # define EXIF_NUM_FORMATS 12 # define EXIF_FMT_BYTE 1 # define EXIF_FMT_STRING 2 # define EXIF_FMT_USHORT 3 # define EXIF_FMT_ULONG 4 # define EXIF_FMT_URATIONAL 5 # define EXIF_FMT_SBYTE 6 # define EXIF_FMT_UNDEFINED 7 # define EXIF_FMT_SSHORT 8 # define EXIF_FMT_SLONG 9 # define EXIF_FMT_SRATIONAL 10 # define EXIF_FMT_SINGLE 11 # define EXIF_FMT_DOUBLE 12 # define TAG_EXIF_OFFSET 0x8769 # define TAG_GPS_OFFSET 0x8825 # define TAG_INTEROP_OFFSET 0xa005 <S2SV_StartBug> # define EXIFMultipleValues ( size , format , arg ) { ssize_t component ; size_t length ; unsigned char * p1 ; length = 0 ; p1 = p ; for ( component = 0 ; component < components ; component ++ ) { length += FormatLocaleString ( buffer + length , MagickPathExtent - length , format \",<S2SV_blank>\" , arg ) ; if ( length >= ( MagickPathExtent - 1 ) ) length = MagickPathExtent - 1 ; p1 += size ; } if ( length > 1 ) buffer [ length - 2 ] = '\\\\0' ; value = AcquireString ( buffer ) ; } <S2SV_EndBug> <S2SV_StartBug> # define EXIFMultipleFractions ( size , format , arg1 , arg2 ) { ssize_t component ; size_t length ; unsigned char * p1 ; length = 0 ; p1 = p ; for ( component = 0 ; component < components ; component ++ ) { length += FormatLocaleString ( buffer + length , MagickPathExtent - length , format \",<S2SV_blank>\" , ( arg1 ) , ( arg2 ) ) ; if ( length >= ( MagickPathExtent - 1 ) ) length = MagickPathExtent - 1 ; p1 += size ; } if ( length > 1 ) buffer [ length - 2 ] = '\\\\0' ; value = AcquireString ( buffer ) ; } <S2SV_EndBug> typedef struct _DirectoryInfo { const unsigned char * directory ; size_t entry ; ssize_t offset ; } DirectoryInfo ; typedef struct _TagInfo { size_t tag ; const char * description ; } TagInfo ; static TagInfo EXIFTag [ ] = { { 0x001 , \"exif:InteroperabilityIndex\" } , { 0x002 , \"exif:InteroperabilityVersion\" } , { 0x100 , \"exif:ImageWidth\" } , { 0x101 , \"exif:ImageLength\" } , { 0x102 , \"exif:BitsPerSample\" } , { 0x103 , \"exif:Compression\" } , { 0x106 , \"exif:PhotometricInterpretation\" } , { 0x10a , \"exif:FillOrder\" } , { 0x10d , \"exif:DocumentName\" } , { 0x10e , \"exif:ImageDescription\" } , { 0x10f , \"exif:Make\" } , { 0x110 , \"exif:Model\" } , { 0x111 , \"exif:StripOffsets\" } , { 0x112 , \"exif:Orientation\" } , { 0x115 , \"exif:SamplesPerPixel\" } , { 0x116 , \"exif:RowsPerStrip\" } , { 0x117 , \"exif:StripByteCounts\" } , { 0x11a , \"exif:XResolution\" } , { 0x11b , \"exif:YResolution\" } , { 0x11c , \"exif:PlanarConfiguration\" } , { 0x11d , \"exif:PageName\" } , { 0x11e , \"exif:XPosition\" } , { 0x11f , \"exif:YPosition\" } , { 0x118 , \"exif:MinSampleValue\" } , { 0x119 , \"exif:MaxSampleValue\" } , { 0x120 , \"exif:FreeOffsets\" } , { 0x121 , \"exif:FreeByteCounts\" } , { 0x122 , \"exif:GrayResponseUnit\" } , { 0x123 , \"exif:GrayResponseCurve\" } , { 0x124 , \"exif:T4Options\" } , { 0x125 , \"exif:T6Options\" } , { 0x128 , \"exif:ResolutionUnit\" } , { 0x12d , \"exif:TransferFunction\" } , { 0x131 , \"exif:Software\" } , { 0x132 , \"exif:DateTime\" } , { 0x13b , \"exif:Artist\" } , { 0x13e , \"exif:WhitePoint\" } , { 0x13f , \"exif:PrimaryChromaticities\" } , { 0x140 , \"exif:ColorMap\" } , { 0x141 , \"exif:HalfToneHints\" } , { 0x142 , \"exif:TileWidth\" } , { 0x143 , \"exif:TileLength\" } , { 0x144 , \"exif:TileOffsets\" } , { 0x145 , \"exif:TileByteCounts\" } , { 0x14a , \"exif:SubIFD\" } , { 0x14c , \"exif:InkSet\" } , { 0x14d , \"exif:InkNames\" } , { 0x14e , \"exif:NumberOfInks\" } , { 0x150 , \"exif:DotRange\" } , { 0x151 , \"exif:TargetPrinter\" } , { 0x152 , \"exif:ExtraSample\" } , { 0x153 , \"exif:SampleFormat\" } , { 0x154 , \"exif:SMinSampleValue\" } , { 0x155 , \"exif:SMaxSampleValue\" } , { 0x156 , \"exif:TransferRange\" } , { 0x157 , \"exif:ClipPath\" } , { 0x158 , \"exif:XClipPathUnits\" } , { 0x159 , \"exif:YClipPathUnits\" } , { 0x15a , \"exif:Indexed\" } , { 0x15b , \"exif:JPEGTables\" } , { 0x15f , \"exif:OPIProxy\" } , { 0x200 , \"exif:JPEGProc\" } , { 0x201 , \"exif:JPEGInterchangeFormat\" } , { 0x202 , \"exif:JPEGInterchangeFormatLength\" } , { 0x203 , \"exif:JPEGRestartInterval\" } , { 0x205 , \"exif:JPEGLosslessPredictors\" } , { 0x206 , \"exif:JPEGPointTransforms\" } , { 0x207 , \"exif:JPEGQTables\" } , { 0x208 , \"exif:JPEGDCTables\" } , { 0x209 , \"exif:JPEGACTables\" } , { 0x211 , \"exif:YCbCrCoefficients\" } , { 0x212 , \"exif:YCbCrSubSampling\" } , { 0x213 , \"exif:YCbCrPositioning\" } , { 0x214 , \"exif:ReferenceBlackWhite\" } , { 0x2bc , \"exif:ExtensibleMetadataPlatform\" } , { 0x301 , \"exif:Gamma\" } , { 0x302 , \"exif:ICCProfileDescriptor\" } , { 0x303 , \"exif:SRGBRenderingIntent\" } , { 0x320 , \"exif:ImageTitle\" } , { 0x5001 , \"exif:ResolutionXUnit\" } , { 0x5002 , \"exif:ResolutionYUnit\" } , { 0x5003 , \"exif:ResolutionXLengthUnit\" } , { 0x5004 , \"exif:ResolutionYLengthUnit\" } , { 0x5005 , \"exif:PrintFlags\" } , { 0x5006 , \"exif:PrintFlagsVersion\" } , { 0x5007 , \"exif:PrintFlagsCrop\" } , { 0x5008 , \"exif:PrintFlagsBleedWidth\" } , { 0x5009 , \"exif:PrintFlagsBleedWidthScale\" } , { 0x500A , \"exif:HalftoneLPI\" } , { 0x500B , \"exif:HalftoneLPIUnit\" } , { 0x500C , \"exif:HalftoneDegree\" } , { 0x500D , \"exif:HalftoneShape\" } , { 0x500E , \"exif:HalftoneMisc\" } , { 0x500F , \"exif:HalftoneScreen\" } , { 0x5010 , \"exif:JPEGQuality\" } , { 0x5011 , \"exif:GridSize\" } , { 0x5012 , \"exif:ThumbnailFormat\" } , { 0x5013 , \"exif:ThumbnailWidth\" } , { 0x5014 , \"exif:ThumbnailHeight\" } , { 0x5015 , \"exif:ThumbnailColorDepth\" } , { 0x5016 , \"exif:ThumbnailPlanes\" } , { 0x5017 , \"exif:ThumbnailRawBytes\" } , { 0x5018 , \"exif:ThumbnailSize\" } , { 0x5019 , \"exif:ThumbnailCompressedSize\" } , { 0x501a , \"exif:ColorTransferFunction\" } , { 0x501b , \"exif:ThumbnailData\" } , { 0x5020 , \"exif:ThumbnailImageWidth\" } , { 0x5021 , \"exif:ThumbnailImageHeight\" } , { 0x5022 , \"exif:ThumbnailBitsPerSample\" } , { 0x5023 , \"exif:ThumbnailCompression\" } , { 0x5024 , \"exif:ThumbnailPhotometricInterp\" } , { 0x5025 , \"exif:ThumbnailImageDescription\" } , { 0x5026 , \"exif:ThumbnailEquipMake\" } , { 0x5027 , \"exif:ThumbnailEquipModel\" } , { 0x5028 , \"exif:ThumbnailStripOffsets\" } , { 0x5029 , \"exif:ThumbnailOrientation\" } , { 0x502a , \"exif:ThumbnailSamplesPerPixel\" } , { 0x502b , \"exif:ThumbnailRowsPerStrip\" } , { 0x502c , \"exif:ThumbnailStripBytesCount\" } , { 0x502d , \"exif:ThumbnailResolutionX\" } , { 0x502e , \"exif:ThumbnailResolutionY\" } , { 0x502f , \"exif:ThumbnailPlanarConfig\" } , { 0x5030 , \"exif:ThumbnailResolutionUnit\" } , { 0x5031 , \"exif:ThumbnailTransferFunction\" } , { 0x5032 , \"exif:ThumbnailSoftwareUsed\" } , { 0x5033 , \"exif:ThumbnailDateTime\" } , { 0x5034 , \"exif:ThumbnailArtist\" } , { 0x5035 , \"exif:ThumbnailWhitePoint\" } , { 0x5036 , \"exif:ThumbnailPrimaryChromaticities\" } , { 0x5037 , \"exif:ThumbnailYCbCrCoefficients\" } , { 0x5038 , \"exif:ThumbnailYCbCrSubsampling\" } , { 0x5039 , \"exif:ThumbnailYCbCrPositioning\" } , { 0x503A , \"exif:ThumbnailRefBlackWhite\" } , { 0x503B , \"exif:ThumbnailCopyRight\" } , { 0x5090 , \"exif:LuminanceTable\" } , { 0x5091 , \"exif:ChrominanceTable\" } , { 0x5100 , \"exif:FrameDelay\" } , { 0x5101 , \"exif:LoopCount\" } , { 0x5110 , \"exif:PixelUnit\" } , { 0x5111 , \"exif:PixelPerUnitX\" } , { 0x5112 , \"exif:PixelPerUnitY\" } , { 0x5113 , \"exif:PaletteHistogram\" } , { 0x1000 , \"exif:RelatedImageFileFormat\" } , { 0x1001 , \"exif:RelatedImageLength\" } , { 0x1002 , \"exif:RelatedImageWidth\" } , { 0x800d , \"exif:ImageID\" } , { 0x80e3 , \"exif:Matteing\" } , { 0x80e4 , \"exif:DataType\" } , { 0x80e5 , \"exif:ImageDepth\" } , { 0x80e6 , \"exif:TileDepth\" } , { 0x828d , \"exif:CFARepeatPatternDim\" } , { 0x828e , \"exif:CFAPattern2\" } , { 0x828f , \"exif:BatteryLevel\" } , { 0x8298 , \"exif:Copyright\" } , { 0x829a , \"exif:ExposureTime\" } , { 0x829d , \"exif:FNumber\" } , { 0x83bb , \"exif:IPTC/NAA\" } , { 0x84e3 , \"exif:IT8RasterPadding\" } , { 0x84e5 , \"exif:IT8ColorTable\" } , { 0x8649 , \"exif:ImageResourceInformation\" } , { 0x8769 , \"exif:ExifOffset\" } , { 0x8773 , \"exif:InterColorProfile\" } , { 0x8822 , \"exif:ExposureProgram\" } , { 0x8824 , \"exif:SpectralSensitivity\" } , { 0x8825 , \"exif:GPSInfo\" } , { 0x8827 , \"exif:ISOSpeedRatings\" } , { 0x8828 , \"exif:OECF\" } , { 0x8829 , \"exif:Interlace\" } , { 0x882a , \"exif:TimeZoneOffset\" } , { 0x882b , \"exif:SelfTimerMode\" } , { 0x9000 , \"exif:ExifVersion\" } , { 0x9003 , \"exif:DateTimeOriginal\" } , { 0x9004 , \"exif:DateTimeDigitized\" } , { 0x9101 , \"exif:ComponentsConfiguration\" } , { 0x9102 , \"exif:CompressedBitsPerPixel\" } , { 0x9201 , \"exif:ShutterSpeedValue\" } , { 0x9202 , \"exif:ApertureValue\" } , { 0x9203 , \"exif:BrightnessValue\" } , { 0x9204 , \"exif:ExposureBiasValue\" } , { 0x9205 , \"exif:MaxApertureValue\" } , { 0x9206 , \"exif:SubjectDistance\" } , { 0x9207 , \"exif:MeteringMode\" } , { 0x9208 , \"exif:LightSource\" } , { 0x9209 , \"exif:Flash\" } , { 0x920a , \"exif:FocalLength\" } , { 0x920b , \"exif:FlashEnergy\" } , { 0x920c , \"exif:SpatialFrequencyResponse\" } , { 0x920d , \"exif:Noise\" } , { 0x9211 , \"exif:ImageNumber\" } , { 0x9212 , \"exif:SecurityClassification\" } , { 0x9213 , \"exif:ImageHistory\" } , { 0x9214 , \"exif:SubjectArea\" } , { 0x9215 , \"exif:ExposureIndex\" } , { 0x9216 , \"exif:TIFF-EPStandardID\" } , { 0x927c , \"exif:MakerNote\" } , { 0x9C9b , \"exif:WinXP-Title\" } , { 0x9C9c , \"exif:WinXP-Comments\" } , { 0x9C9d , \"exif:WinXP-Author\" } , { 0x9C9e , \"exif:WinXP-Keywords\" } , { 0x9C9f , \"exif:WinXP-Subject\" } , { 0x9286 , \"exif:UserComment\" } , { 0x9290 , \"exif:SubSecTime\" } , { 0x9291 , \"exif:SubSecTimeOriginal\" } , { 0x9292 , \"exif:SubSecTimeDigitized\" } , { 0xa000 , \"exif:FlashPixVersion\" } , { 0xa001 , \"exif:ColorSpace\" } , { 0xa002 , \"exif:ExifImageWidth\" } , { 0xa003 , \"exif:ExifImageLength\" } , { 0xa004 , \"exif:RelatedSoundFile\" } , { 0xa005 , \"exif:InteroperabilityOffset\" } , { 0xa20b , \"exif:FlashEnergy\" } , { 0xa20c , \"exif:SpatialFrequencyResponse\" } , { 0xa20d , \"exif:Noise\" } , { 0xa20e , \"exif:FocalPlaneXResolution\" } , { 0xa20f , \"exif:FocalPlaneYResolution\" } , { 0xa210 , \"exif:FocalPlaneResolutionUnit\" } , { 0xa214 , \"exif:SubjectLocation\" } , { 0xa215 , \"exif:ExposureIndex\" } , { 0xa216 , \"exif:TIFF/EPStandardID\" } , { 0xa217 , \"exif:SensingMethod\" } , { 0xa300 , \"exif:FileSource\" } , { 0xa301 , \"exif:SceneType\" } , { 0xa302 , \"exif:CFAPattern\" } , { 0xa401 , \"exif:CustomRendered\" } , { 0xa402 , \"exif:ExposureMode\" } , { 0xa403 , \"exif:WhiteBalance\" } , { 0xa404 , \"exif:DigitalZoomRatio\" } , { 0xa405 , \"exif:FocalLengthIn35mmFilm\" } , { 0xa406 , \"exif:SceneCaptureType\" } , { 0xa407 , \"exif:GainControl\" } , { 0xa408 , \"exif:Contrast\" } , { 0xa409 , \"exif:Saturation\" } , { 0xa40a , \"exif:Sharpness\" } , { 0xa40b , \"exif:DeviceSettingDescription\" } , { 0xa40c , \"exif:SubjectDistanceRange\" } , { 0xa420 , \"exif:ImageUniqueID\" } , { 0xc4a5 , \"exif:PrintImageMatching\" } , { 0xa500 , \"exif:Gamma\" } , { 0xc640 , \"exif:CR2Slice\" } , { 0x10000 , \"exif:GPSVersionID\" } , { 0x10001 , \"exif:GPSLatitudeRef\" } , { 0x10002 , \"exif:GPSLatitude\" } , { 0x10003 , \"exif:GPSLongitudeRef\" } , { 0x10004 , \"exif:GPSLongitude\" } , { 0x10005 , \"exif:GPSAltitudeRef\" } , { 0x10006 , \"exif:GPSAltitude\" } , { 0x10007 , \"exif:GPSTimeStamp\" } , { 0x10008 , \"exif:GPSSatellites\" } , { 0x10009 , \"exif:GPSStatus\" } , { 0x1000a , \"exif:GPSMeasureMode\" } , { 0x1000b , \"exif:GPSDop\" } , { 0x1000c , \"exif:GPSSpeedRef\" } , { 0x1000d , \"exif:GPSSpeed\" } , { 0x1000e , \"exif:GPSTrackRef\" } , { 0x1000f , \"exif:GPSTrack\" } , { 0x10010 , \"exif:GPSImgDirectionRef\" } , { 0x10011 , \"exif:GPSImgDirection\" } , { 0x10012 , \"exif:GPSMapDatum\" } , { 0x10013 , \"exif:GPSDestLatitudeRef\" } , { 0x10014 , \"exif:GPSDestLatitude\" } , { 0x10015 , \"exif:GPSDestLongitudeRef\" } , { 0x10016 , \"exif:GPSDestLongitude\" } , { 0x10017 , \"exif:GPSDestBearingRef\" } , { 0x10018 , \"exif:GPSDestBearing\" } , { 0x10019 , \"exif:GPSDestDistanceRef\" } , { 0x1001a , \"exif:GPSDestDistance\" } , { 0x1001b , \"exif:GPSProcessingMethod\" } , { 0x1001c , \"exif:GPSAreaInformation\" } , { 0x1001d , \"exif:GPSDateStamp\" } , { 0x1001e , \"exif:GPSDifferential\" } , { 0x00000 , ( const char * ) NULL } } ; const StringInfo * profile ; const unsigned char * directory , * exif ; DirectoryInfo directory_stack [ MaxDirectoryStack ] ; EndianType endian ; MagickBooleanType status ; register ssize_t i ; size_t entry , length , number_entries , tag , tag_value ; SplayTreeInfo * exif_resources ; ssize_t all , id , level , offset , tag_offset ; static int tag_bytes [ ] = { 0 , 1 , 1 , 2 , 4 , 8 , 1 , 1 , 2 , 4 , 8 , 4 , 8 } ; profile = GetImageProfile ( image , \"exif\" ) ; if ( profile == ( const StringInfo * ) NULL ) return ( MagickFalse ) ; if ( ( property == ( const char * ) NULL ) || ( * property == '\\\\0' ) ) return ( MagickFalse ) ; while ( isspace ( ( int ) ( ( unsigned char ) * property ) ) != 0 ) property ++ ; if ( strlen ( property ) <= 5 ) return ( MagickFalse ) ; all = 0 ; tag = ( ~ 0UL ) ; switch ( * ( property + 5 ) ) { case '*' : { tag = 0 ; all = 1 ; break ; } case '!' : { tag = 0 ; all = 2 ; break ; } case '#' : case '@' : { int c ; size_t n ; tag = ( * ( property + 5 ) == '@' ) ? 1UL : 0UL ; property += 6 ; n = strlen ( property ) ; if ( n != 4 ) return ( MagickFalse ) ; n /= 4 ; do { for ( i = ( ssize_t ) n - 1L ; i >= 0 ; i -- ) { c = ( * property ++ ) ; tag <<= 4 ; if ( ( c >= '0' ) && ( c <= '9' ) ) tag |= ( c - '0' ) ; else if ( ( c >= 'A' ) && ( c <= 'F' ) ) tag |= ( c - ( 'A' - 10 ) ) ; else if ( ( c >= 'a' ) && ( c <= 'f' ) ) tag |= ( c - ( 'a' - 10 ) ) ; else return ( MagickFalse ) ; } } while ( * property != '\\\\0' ) ; break ; } default : { for ( i = 0 ; ; i ++ ) { if ( EXIFTag [ i ] . tag == 0 ) break ; if ( LocaleCompare ( EXIFTag [ i ] . description , property ) == 0 ) { tag = ( size_t ) EXIFTag [ i ] . tag ; break ; } } break ; } } if ( tag == ( ~ 0UL ) ) return ( MagickFalse ) ; length = GetStringInfoLength ( profile ) ; exif = GetStringInfoDatum ( profile ) ; while ( length != 0 ) { if ( ReadPropertyByte ( & exif , & length ) != 0x45 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x78 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x69 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x66 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x00 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x00 ) continue ; break ; } if ( length < 16 ) return ( MagickFalse ) ; id = ( ssize_t ) ReadPropertySignedShort ( LSBEndian , exif ) ; endian = LSBEndian ; if ( id == 0x4949 ) endian = LSBEndian ; else if ( id == 0x4D4D ) endian = MSBEndian ; else return ( MagickFalse ) ; if ( ReadPropertyUnsignedShort ( endian , exif + 2 ) != 0x002a ) return ( MagickFalse ) ; offset = ( ssize_t ) ReadPropertySignedLong ( endian , exif + 4 ) ; if ( ( offset < 0 ) || ( size_t ) offset >= length ) return ( MagickFalse ) ; status = MagickFalse ; directory = exif + offset ; level = 0 ; entry = 0 ; tag_offset = 0 ; exif_resources = NewSplayTree ( ( int ( * ) ( const void * , const void * ) ) NULL , ( void * ( * ) ( void * ) ) NULL , ( void * ( * ) ( void * ) ) NULL ) ; do { if ( level > 0 ) { level -- ; directory = directory_stack [ level ] . directory ; entry = directory_stack [ level ] . entry ; tag_offset = directory_stack [ level ] . offset ; } if ( ( directory < exif ) || ( directory > ( exif + length - 2 ) ) ) break ; number_entries = ( size_t ) ReadPropertyUnsignedShort ( endian , directory ) ; for ( ; entry < number_entries ; entry ++ ) { register unsigned char * p , * q ; size_t format ; ssize_t number_bytes , components ; q = ( unsigned char * ) ( directory + ( 12 * entry ) + 2 ) ; <S2SV_StartBug> if ( GetValueFromSplayTree ( exif_resources , q ) == q ) <S2SV_EndBug> break ; ( void ) AddValueToSplayTree ( exif_resources , q , q ) ; tag_value = ( size_t ) ReadPropertyUnsignedShort ( endian , q ) + tag_offset ; format = ( size_t ) ReadPropertyUnsignedShort ( endian , q + 2 ) ; if ( format >= ( sizeof ( tag_bytes ) / sizeof ( * tag_bytes ) ) ) break ; <S2SV_StartBug> components = ( ssize_t ) ReadPropertySignedLong ( endian , q + 4 ) ; <S2SV_EndBug> number_bytes = ( size_t ) components * tag_bytes [ format ] ; if ( number_bytes < components ) break ; if ( number_bytes <= 4 ) p = q + 8 ; else { ssize_t offset ; offset = ( ssize_t ) ReadPropertySignedLong ( endian , q + 8 ) ; if ( ( offset < 0 ) || ( size_t ) offset >= length ) continue ; if ( ( ssize_t ) ( offset + number_bytes ) < offset ) continue ; if ( ( size_t ) ( offset + number_bytes ) > length ) continue ; p = ( unsigned char * ) ( exif + offset ) ; } if ( ( all != 0 ) || ( tag == ( size_t ) tag_value ) ) { char buffer [ MagickPathExtent ] , * value ; value = ( char * ) NULL ; * buffer = '\\\\0' ; switch ( format ) { case EXIF_FMT_BYTE : case EXIF_FMT_UNDEFINED : { EXIFMultipleValues ( 1 , \"%.20g\" , ( double ) ( * ( unsigned char * ) p1 ) ) ; break ; } case EXIF_FMT_SBYTE : { EXIFMultipleValues ( 1 , \"%.20g\" , ( double ) ( * ( signed char * ) p1 ) ) ; break ; } case EXIF_FMT_SSHORT : { EXIFMultipleValues ( 2 , \"%hd\" , ReadPropertySignedShort ( endian , p1 ) ) ; break ; } case EXIF_FMT_USHORT : { EXIFMultipleValues ( 2 , \"%hu\" , ReadPropertyUnsignedShort ( endian , p1 ) ) ; break ; } case EXIF_FMT_ULONG : { EXIFMultipleValues ( 4 , \"%.20g\" , ( double ) ReadPropertyUnsignedLong ( endian , p1 ) ) ; break ; } case EXIF_FMT_SLONG : { EXIFMultipleValues ( 4 , \"%.20g\" , ( double ) ReadPropertySignedLong ( endian , p1 ) ) ; break ; } case EXIF_FMT_URATIONAL : { EXIFMultipleFractions ( 8 , \"%.20g/%.20g\" , ( double ) ReadPropertyUnsignedLong ( endian , p1 ) , ( double ) ReadPropertyUnsignedLong ( endian , p1 + 4 ) ) ; break ; } case EXIF_FMT_SRATIONAL : { EXIFMultipleFractions ( 8 , \"%.20g/%.20g\" , ( double ) ReadPropertySignedLong ( endian , p1 ) , ( double ) ReadPropertySignedLong ( endian , p1 + 4 ) ) ; break ; } case EXIF_FMT_SINGLE : { EXIFMultipleValues ( 4 , \"%f\" , ( double ) * ( float * ) p1 ) ; break ; } case EXIF_FMT_DOUBLE : { EXIFMultipleValues ( 8 , \"%f\" , * ( double * ) p1 ) ; break ; } default : case EXIF_FMT_STRING : { value = ( char * ) NULL ; if ( ~ ( ( size_t ) number_bytes ) >= 1 ) value = ( char * ) AcquireQuantumMemory ( ( size_t ) number_bytes + 1UL , sizeof ( * value ) ) ; if ( value != ( char * ) NULL ) { register ssize_t i ; for ( i = 0 ; i < ( ssize_t ) number_bytes ; i ++ ) { value [ i ] = '.' ; if ( ( isprint ( ( int ) p [ i ] ) != 0 ) || ( p [ i ] == '\\\\0' ) ) value [ i ] = ( char ) p [ i ] ; } value [ i ] = '\\\\0' ; } break ; } } if ( value != ( char * ) NULL ) { char * key ; register const char * p ; key = AcquireString ( property ) ; switch ( all ) { case 1 : { const char * description ; register ssize_t i ; description = \"unknown\" ; for ( i = 0 ; ; i ++ ) { if ( EXIFTag [ i ] . tag == 0 ) break ; if ( EXIFTag [ i ] . tag == tag_value ) { description = EXIFTag [ i ] . description ; break ; } } ( void ) FormatLocaleString ( key , MagickPathExtent , \"%s\" , description ) ; if ( level == 2 ) ( void ) SubstituteString ( & key , \"exif:\" , \"exif:thumbnail:\" ) ; break ; } case 2 : { if ( tag_value < 0x10000 ) ( void ) FormatLocaleString ( key , MagickPathExtent , \"#%04lx\" , ( unsigned long ) tag_value ) ; else if ( tag_value < 0x20000 ) ( void ) FormatLocaleString ( key , MagickPathExtent , \"@%04lx\" , ( unsigned long ) ( tag_value & 0xffff ) ) ; else ( void ) FormatLocaleString ( key , MagickPathExtent , \"unknown\" ) ; break ; } default : { if ( level == 2 ) ( void ) SubstituteString ( & key , \"exif:\" , \"exif:thumbnail:\" ) ; } } p = ( const char * ) NULL ; if ( image -> properties != ( void * ) NULL ) p = ( const char * ) GetValueFromSplayTree ( ( SplayTreeInfo * ) image -> properties , key ) ; if ( p == ( const char * ) NULL ) ( void ) SetImageProperty ( ( Image * ) image , key , value , exception ) ; value = DestroyString ( value ) ; key = DestroyString ( key ) ; status = MagickTrue ; } } if ( ( tag_value == TAG_EXIF_OFFSET ) || ( tag_value == TAG_INTEROP_OFFSET ) || ( tag_value == TAG_GPS_OFFSET ) ) { ssize_t offset ; offset = ( ssize_t ) ReadPropertySignedLong ( endian , p ) ; if ( ( ( size_t ) offset < length ) && ( level < ( MaxDirectoryStack - 2 ) ) ) { ssize_t tag_offset1 ; tag_offset1 = ( ssize_t ) ( ( tag_value == TAG_GPS_OFFSET ) ? 0x10000 : 0 ) ; directory_stack [ level ] . directory = directory ; entry ++ ; directory_stack [ level ] . entry = entry ; directory_stack [ level ] . offset = tag_offset ; level ++ ; directory_stack [ level ] . directory = exif + offset ; directory_stack [ level ] . offset = tag_offset1 ; directory_stack [ level ] . entry = 0 ; level ++ ; if ( ( directory + 2 + ( 12 * number_entries ) ) > ( exif + length ) ) break ; offset = ( ssize_t ) ReadPropertySignedLong ( endian , directory + 2 + ( 12 * number_entries ) ) ; if ( ( offset != 0 ) && ( ( size_t ) offset < length ) && ( level < ( MaxDirectoryStack - 2 ) ) ) { directory_stack [ level ] . directory = exif + offset ; directory_stack [ level ] . entry = 0 ; directory_stack [ level ] . offset = tag_offset1 ; level ++ ; } } break ; } } } while ( level > 0 ) ; exif_resources = DestroySplayTree ( exif_resources ) ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , arg ) \\\\\\n{ <S2SV_ModEnd> ssize_t component ; <S2SV_ModStart> buffer ) ; \\\\\\n} <S2SV_ModEnd> # define EXIFMultipleFractions <S2SV_ModStart> , arg2 ) \\\\\\n{ <S2SV_ModEnd> ssize_t component ; <S2SV_ModStart> buffer ) ; \\\\\\n} <S2SV_ModEnd> typedef struct _DirectoryInfo <S2SV_ModStart> ; if ( q > ( exif + length - 12 ) ) break ; if ( <S2SV_ModStart> + 4 ) ; if ( components < 0 ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7284\n\n```\nCWE-200 static void __net_random_once_deferred ( struct work_struct * w ) { struct __net_random_once_work * work = container_of ( w , struct __net_random_once_work , work ) ; <S2SV_StartBug> if ( ! static_key_enabled ( work -> key ) ) <S2SV_EndBug> static_key_slow_inc ( work -> key ) ; kfree ( work ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> work ) ; BUG_ON <S2SV_ModEnd> ( ! static_key_enabled <S2SV_ModStart> key ) ) ; static_key_slow_dec <S2SV_ModEnd> ( work ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15921\n\n```\nCWE-399 int genl_register_family ( struct genl_family * family ) { int err , i ; int start = GENL_START_ALLOC , end = GENL_MAX_ID ; err = genl_validate_ops ( family ) ; if ( err ) return err ; genl_lock_all ( ) ; if ( genl_family_find_byname ( family -> name ) ) { err = - EEXIST ; goto errout_locked ; } if ( family == & genl_ctrl ) { start = end = GENL_ID_CTRL ; } else if ( strcmp ( family -> name , \"pmcraid\" ) == 0 ) { start = end = GENL_ID_PMCRAID ; } else if ( strcmp ( family -> name , \"VFS_DQUOT\" ) == 0 ) { start = end = GENL_ID_VFS_DQUOT ; } if ( family -> maxattr && ! family -> parallel_ops ) { family -> attrbuf = kmalloc_array ( family -> maxattr + 1 , sizeof ( struct nlattr * ) , GFP_KERNEL ) ; if ( family -> attrbuf == NULL ) { err = - ENOMEM ; goto errout_locked ; } } else family -> attrbuf = NULL ; family -> id = idr_alloc ( & genl_fam_idr , family , start , end + 1 , GFP_KERNEL ) ; if ( family -> id < 0 ) { err = family -> id ; <S2SV_StartBug> goto errout_locked ; <S2SV_EndBug> } err = genl_validate_assign_mc_groups ( family ) ; if ( err ) goto errout_remove ; genl_unlock_all ( ) ; genl_ctrl_event ( CTRL_CMD_NEWFAMILY , family , NULL , 0 ) ; for ( i = 0 ; i < family -> n_mcgrps ; i ++ ) genl_ctrl_event ( CTRL_CMD_NEWMCAST_GRP , family , & family -> mcgrps [ i ] , family -> mcgrp_offset + i ) ; return 0 ; errout_remove : idr_remove ( & genl_fam_idr , family -> id ) ; <S2SV_StartBug> kfree ( family -> attrbuf ) ; <S2SV_EndBug> errout_locked : genl_unlock_all ( ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ; goto errout_free <S2SV_ModEnd> ; } err <S2SV_ModStart> id ) ; errout_free :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14814\n\n```\nCWE-120 void mwifiex_set_wmm_params ( struct mwifiex_private * priv , struct mwifiex_uap_bss_param * bss_cfg , struct cfg80211_ap_settings * params ) { const u8 * vendor_ie ; const u8 * wmm_ie ; u8 wmm_oui [ ] = { 0x00 , 0x50 , 0xf2 , 0x02 } ; vendor_ie = cfg80211_find_vendor_ie ( WLAN_OUI_MICROSOFT , WLAN_OUI_TYPE_MICROSOFT_WMM , params -> beacon . tail , params -> beacon . tail_len ) ; if ( vendor_ie ) { wmm_ie = vendor_ie ; <S2SV_StartBug> memcpy ( & bss_cfg -> wmm_info , wmm_ie + <S2SV_EndBug> <S2SV_StartBug> sizeof ( struct ieee_types_header ) , * ( wmm_ie + 1 ) ) ; <S2SV_EndBug> priv -> wmm_enabled = 1 ; } else { memset ( & bss_cfg -> wmm_info , 0 , sizeof ( bss_cfg -> wmm_info ) ) ; memcpy ( & bss_cfg -> wmm_info . oui , wmm_oui , sizeof ( wmm_oui ) ) ; bss_cfg -> wmm_info . subtype = MWIFIEX_WMM_SUBTYPE ; bss_cfg -> wmm_info . version = MWIFIEX_WMM_VERSION ; priv -> wmm_enabled = 0 ; } bss_cfg -> qos_info = 0x00 ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = vendor_ie ; if ( <S2SV_ModEnd> * ( wmm_ie <S2SV_ModStart> + 1 ) > sizeof ( struct mwifiex_types_wmm_info ) ) return ; memcpy ( & bss_cfg -> wmm_info , wmm_ie + sizeof ( struct ieee_types_header ) , * ( wmm_ie + 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t ssiProcessEchoCommand ( HttpConnection * connection , const char_t * tag , size_t length ) { error_t error ; char_t * separator ; char_t * attribute ; char_t * value ; if ( length < 4 || length >= HTTP_SERVER_BUFFER_SIZE ) return ERROR_INVALID_TAG ; osMemcpy ( connection -> buffer , tag + 4 , length - 4 ) ; connection -> buffer [ length - 4 ] = '\\\\0' ; <S2SV_StartBug> separator = strchr ( connection -> buffer , '=' ) ; <S2SV_EndBug> if ( ! separator ) return ERROR_INVALID_TAG ; * separator = '\\\\0' ; attribute = strTrimWhitespace ( connection -> buffer ) ; value = strTrimWhitespace ( separator + 1 ) ; if ( value [ 0 ] == '\\\\'' || value [ 0 ] == \\'\\\\\"\\' ) value ++ ; length = osStrlen ( value ) ; if ( length > 0 ) { if ( value [ length - 1 ] == '\\\\'' || value [ length - 1 ] == \\'\\\\\"\\' ) value [ length - 1 ] = '\\\\0' ; } if ( osStrcasecmp ( attribute , \"var\" ) ) return ERROR_INVALID_TAG ; if ( ! osStrcasecmp ( value , \"REMOTE_ADDR\" ) ) { ipAddrToString ( & connection -> socket -> remoteIpAddr , connection -> buffer ) ; } else if ( ! osStrcasecmp ( value , \"REMOTE_PORT\" ) ) { osSprintf ( connection -> buffer , \"%\" PRIu16 , connection -> socket -> remotePort ) ; } else if ( ! osStrcasecmp ( value , \"SERVER_ADDR\" ) ) { ipAddrToString ( & connection -> socket -> localIpAddr , connection -> buffer ) ; } else if ( ! osStrcasecmp ( value , \"SERVER_PORT\" ) ) { osSprintf ( connection -> buffer , \"%\" PRIu16 , connection -> socket -> localPort ) ; } else if ( ! osStrcasecmp ( value , \"REQUEST_METHOD\" ) ) { osStrcpy ( connection -> buffer , connection -> request . method ) ; } else if ( ! osStrcasecmp ( value , \"DOCUMENT_ROOT\" ) ) { osStrcpy ( connection -> buffer , connection -> settings -> rootDirectory ) ; } else if ( ! osStrcasecmp ( value , \"DOCUMENT_URI\" ) ) { osStrcpy ( connection -> buffer , connection -> request . uri ) ; } else if ( ! osStrcasecmp ( value , \"DOCUMENT_NAME\" ) ) { httpGetAbsolutePath ( connection , connection -> request . uri , connection -> buffer , HTTP_SERVER_BUFFER_SIZE ) ; } else if ( ! osStrcasecmp ( value , \"QUERY_STRING\" ) ) { osStrcpy ( connection -> buffer , connection -> request . queryString ) ; } else if ( ! osStrcasecmp ( value , \"AUTH_USER\" ) ) { # if ( HTTP_SERVER_BASIC_AUTH_SUPPORT == ENABLED || HTTP_SERVER_DIGEST_AUTH_SUPPORT == ENABLED ) osStrcpy ( connection -> buffer , connection -> request . auth . user ) ; # else connection -> buffer [ 0 ] = '\\\\0' ; # endif } else if ( ! osStrcasecmp ( value , \"DATE_GMT\" ) ) { connection -> buffer [ 0 ] = '\\\\0' ; } else if ( ! osStrcasecmp ( value , \"DATE_LOCAL\" ) ) { connection -> buffer [ 0 ] = '\\\\0' ; } else { return ERROR_INVALID_TAG ; } length = osStrlen ( connection -> buffer ) ; error = httpWriteStream ( connection , connection -> buffer , length ) ; if ( error ) return error ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; separator = osStrchr <S2SV_ModEnd> ( connection ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11455\n\n```\nCWE-125 int Util_handle0Escapes ( char * buf ) { int editpos ; int insertpos ; ASSERT ( buf ) ; for ( editpos = insertpos = 0 ; * ( buf + editpos ) != '\\\\0' ; editpos ++ , insertpos ++ ) { if ( * ( buf + editpos ) == '\\\\\\\\' ) { switch ( * ( buf + editpos + 1 ) ) { case '0' : if ( * ( buf + editpos + 2 ) == 'x' ) { <S2SV_StartBug> * ( buf + insertpos ) = x2c ( & buf [ editpos + 3 ] ) ; <S2SV_EndBug> editpos += 4 ; } break ; default : * ( buf + insertpos ) = * ( buf + editpos ) ; } } else { * ( buf + insertpos ) = * ( buf + editpos ) ; } } * ( buf + insertpos ) = '\\\\0' ; return insertpos ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> insertpos ) = _x2c <S2SV_ModEnd> ( & buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static int ext4_ext_handle_uninitialized_extents ( handle_t * handle , struct inode * inode , ext4_lblk_t iblock , unsigned int max_blocks , struct ext4_ext_path * path , int flags , unsigned int allocated , struct buffer_head * bh_result , ext4_fsblk_t newblock ) { int ret = 0 ; int err = 0 ; ext4_io_end_t * io = EXT4_I ( inode ) -> cur_aio_dio ; ext_debug ( \"ext4_ext_handle_uninitialized_extents:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical\" \"block<S2SV_blank>%llu,<S2SV_blank>max_blocks<S2SV_blank>%u,<S2SV_blank>flags<S2SV_blank>%d,<S2SV_blank>allocated<S2SV_blank>%u\" , inode -> i_ino , ( unsigned long long ) iblock , max_blocks , flags , allocated ) ; ext4_ext_show_leaf ( inode , path ) ; <S2SV_StartBug> if ( flags == EXT4_GET_BLOCKS_PRE_IO ) { <S2SV_EndBug> ret = ext4_split_unwritten_extents ( handle , inode , path , iblock , max_blocks , flags ) ; if ( io ) io -> flag = EXT4_IO_UNWRITTEN ; else <S2SV_StartBug> ext4_set_inode_state ( inode , EXT4_STATE_DIO_UNWRITTEN ) ; <S2SV_EndBug> goto out ; } <S2SV_StartBug> if ( flags == EXT4_GET_BLOCKS_CONVERT ) { <S2SV_EndBug> ret = ext4_convert_unwritten_extents_endio ( handle , inode , path ) ; if ( ret >= 0 ) ext4_update_inode_fsync_trans ( handle , inode , 1 ) ; goto out2 ; } if ( flags & EXT4_GET_BLOCKS_UNINIT_EXT ) goto map_out ; if ( ( flags & EXT4_GET_BLOCKS_CREATE ) == 0 ) { set_buffer_unwritten ( bh_result ) ; goto out1 ; } ret = ext4_ext_convert_to_initialized ( handle , inode , path , iblock , max_blocks ) ; if ( ret >= 0 ) ext4_update_inode_fsync_trans ( handle , inode , 1 ) ; out : if ( ret <= 0 ) { err = ret ; goto out2 ; } else allocated = ret ; set_buffer_new ( bh_result ) ; if ( allocated > max_blocks ) { unmap_underlying_metadata_blocks ( inode -> i_sb -> s_bdev , newblock + max_blocks , allocated - max_blocks ) ; allocated = max_blocks ; } if ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) ext4_da_update_reserve_space ( inode , allocated , 0 ) ; map_out : set_buffer_mapped ( bh_result ) ; out1 : if ( allocated > max_blocks ) allocated = max_blocks ; ext4_ext_show_leaf ( inode , path ) ; bh_result -> b_bdev = inode -> i_sb -> s_bdev ; bh_result -> b_blocknr = newblock ; out2 : if ( path ) { ext4_ext_drop_refs ( path ) ; kfree ( path ) ; } return err ? err : allocated ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( flags & EXT4_GET_BLOCKS_PRE_IO ) ) <S2SV_ModEnd> { ret = <S2SV_ModStart> inode , EXT4_STATE_DIO_UNWRITTEN ) ; if ( ext4_should_dioread_nolock ( inode ) ) set_buffer_uninit ( bh_result <S2SV_ModStart> } if ( ( flags & EXT4_GET_BLOCKS_CONVERT ) <S2SV_ModEnd> ) { ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3955\n\n```\nCWE-119 int usbip_recv_xbuff ( struct usbip_device * ud , struct urb * urb ) { int ret ; int size ; if ( ud -> side == USBIP_STUB ) { if ( usb_pipein ( urb -> pipe ) ) return 0 ; size = urb -> transfer_buffer_length ; } else { if ( usb_pipeout ( urb -> pipe ) ) return 0 ; size = urb -> actual_length ; } if ( ! ( size > 0 ) ) return 0 ; <S2SV_StartBug> ret = usbip_recv ( ud -> tcp_socket , urb -> transfer_buffer , size ) ; <S2SV_EndBug> if ( ret != size ) { dev_err ( & urb -> dev -> dev , \"recv<S2SV_blank>xbuf,<S2SV_blank>%d\\\\n\" , ret ) ; if ( ud -> side == USBIP_STUB ) { usbip_event_add ( ud , SDEV_EVENT_ERROR_TCP ) ; <S2SV_StartBug> } else { <S2SV_EndBug> usbip_event_add ( ud , VDEV_EVENT_ERROR_TCP ) ; return - EPIPE ; } } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; if ( size > urb -> transfer_buffer_length ) { <S2SV_ModEnd> if ( ud <S2SV_ModStart> SDEV_EVENT_ERROR_TCP ) ; return 0 ; <S2SV_ModStart> ; } } ret = usbip_recv ( ud -> tcp_socket , urb -> transfer_buffer , size ) ; if ( ret != size ) { dev_err ( & urb -> dev -> dev , \"recv<S2SV_blank>xbuf,<S2SV_blank>%d\\\\n\" , ret ) ; if ( ud -> side == USBIP_STUB ) { usbip_event_add ( ud , SDEV_EVENT_ERROR_TCP ) ; } else { usbip_event_add ( ud , VDEV_EVENT_ERROR_TCP ) ; return - EPIPE ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10639\n\n```\nCWE-326 static __net_init int setup_net ( struct net * net , struct user_namespace * user_ns ) { const struct pernet_operations * ops , * saved_ops ; int error = 0 ; LIST_HEAD ( net_exit_list ) ; refcount_set ( & net -> count , 1 ) ; refcount_set ( & net -> passive , 1 ) ; <S2SV_StartBug> net -> dev_base_seq = 1 ; <S2SV_EndBug> net -> user_ns = user_ns ; idr_init ( & net -> netns_ids ) ; spin_lock_init ( & net -> nsid_lock ) ; mutex_init ( & net -> ipv4 . ra_mutex ) ; list_for_each_entry ( ops , & pernet_list , list ) { error = ops_init ( ops , net ) ; if ( error < 0 ) goto out_undo ; } down_write ( & net_rwsem ) ; list_add_tail_rcu ( & net -> list , & net_namespace_list ) ; up_write ( & net_rwsem ) ; out : return error ; out_undo : list_add ( & net -> exit_list , & net_exit_list ) ; saved_ops = ops ; list_for_each_entry_continue_reverse ( ops , & pernet_list , list ) ops_exit_list ( ops , & net_exit_list ) ; ops = saved_ops ; list_for_each_entry_continue_reverse ( ops , & pernet_list , list ) ops_free_list ( ops , & net_exit_list ) ; rcu_barrier ( ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; get_random_bytes ( & net -> hash_mix , sizeof ( u32 ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-200 static int crypto_report_one ( struct crypto_alg * alg , struct crypto_user_alg * ualg , struct sk_buff * skb ) { <S2SV_StartBug> strlcpy ( ualg -> cru_name , alg -> cra_name , sizeof ( ualg -> cru_name ) ) ; <S2SV_EndBug> <S2SV_StartBug> strlcpy ( ualg -> cru_driver_name , alg -> cra_driver_name , <S2SV_EndBug> sizeof ( ualg -> cru_driver_name ) ) ; <S2SV_StartBug> strlcpy ( ualg -> cru_module_name , module_name ( alg -> cra_module ) , <S2SV_EndBug> sizeof ( ualg -> cru_module_name ) ) ; ualg -> cru_type = 0 ; ualg -> cru_mask = 0 ; ualg -> cru_flags = alg -> cra_flags ; ualg -> cru_refcnt = refcount_read ( & alg -> cra_refcnt ) ; if ( nla_put_u32 ( skb , CRYPTOCFGA_PRIORITY_VAL , alg -> cra_priority ) ) goto nla_put_failure ; if ( alg -> cra_flags & CRYPTO_ALG_LARVAL ) { struct crypto_report_larval rl ; <S2SV_StartBug> strlcpy ( rl . type , \"larval\" , sizeof ( rl . type ) ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_LARVAL , sizeof ( struct crypto_report_larval ) , & rl ) ) goto nla_put_failure ; goto out ; } if ( alg -> cra_type && alg -> cra_type -> report ) { if ( alg -> cra_type -> report ( skb , alg ) ) goto nla_put_failure ; goto out ; } switch ( alg -> cra_flags & ( CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL ) ) { case CRYPTO_ALG_TYPE_CIPHER : if ( crypto_report_cipher ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_COMPRESS : if ( crypto_report_comp ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_ACOMPRESS : if ( crypto_report_acomp ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_AKCIPHER : if ( crypto_report_akcipher ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_KPP : if ( crypto_report_kpp ( skb , alg ) ) goto nla_put_failure ; break ; } out : return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) { strncpy <S2SV_ModEnd> ( ualg -> <S2SV_ModStart> ) ) ; strncpy <S2SV_ModEnd> ( ualg -> <S2SV_ModStart> ) ) ; strncpy <S2SV_ModEnd> ( ualg -> <S2SV_ModStart> crypto_report_larval rl ; strncpy <S2SV_ModEnd> ( rl .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_Parse ( const char * value ) { <S2SV_StartBug> cJSON * c ; <S2SV_EndBug> ep = 0 ; if ( ! ( c = cJSON_New_Item ( ) ) ) return 0 ; if ( ! parse_value ( c , skip ( value ) ) ) { cJSON_Delete ( c ) ; return 0 ; } return c ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) { return cJSON_ParseWithOpts ( value , 0 , 0 ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4300\n\n```\nCWE-190 static int read_SubStreamsInfo ( struct archive_read * a , struct _7z_substream_info * ss , struct _7z_folder * f , size_t numFolders ) { const unsigned char * p ; uint64_t * usizes ; size_t unpack_streams ; int type ; unsigned i ; uint32_t numDigests ; memset ( ss , 0 , sizeof ( * ss ) ) ; for ( i = 0 ; i < numFolders ; i ++ ) f [ i ] . numUnpackStreams = 1 ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; if ( type == kNumUnPackStream ) { unpack_streams = 0 ; for ( i = 0 ; i < numFolders ; i ++ ) { if ( parse_7zip_uint64 ( a , & ( f [ i ] . numUnpackStreams ) ) < 0 ) return ( - 1 ) ; if ( UMAX_ENTRY < f [ i ] . numUnpackStreams ) return ( - 1 ) ; <S2SV_StartBug> unpack_streams += ( size_t ) f [ i ] . numUnpackStreams ; <S2SV_EndBug> } if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; } else unpack_streams = numFolders ; ss -> unpack_streams = unpack_streams ; if ( unpack_streams ) { ss -> unpackSizes = calloc ( unpack_streams , sizeof ( * ss -> unpackSizes ) ) ; ss -> digestsDefined = calloc ( unpack_streams , sizeof ( * ss -> digestsDefined ) ) ; ss -> digests = calloc ( unpack_streams , sizeof ( * ss -> digests ) ) ; if ( ss -> unpackSizes == NULL || ss -> digestsDefined == NULL || ss -> digests == NULL ) return ( - 1 ) ; } usizes = ss -> unpackSizes ; for ( i = 0 ; i < numFolders ; i ++ ) { unsigned pack ; uint64_t sum ; if ( f [ i ] . numUnpackStreams == 0 ) continue ; sum = 0 ; if ( type == kSize ) { for ( pack = 1 ; pack < f [ i ] . numUnpackStreams ; pack ++ ) { if ( parse_7zip_uint64 ( a , usizes ) < 0 ) return ( - 1 ) ; sum += * usizes ++ ; } } * usizes ++ = folder_uncompressed_size ( & f [ i ] ) - sum ; } if ( type == kSize ) { if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; } for ( i = 0 ; i < unpack_streams ; i ++ ) { ss -> digestsDefined [ i ] = 0 ; ss -> digests [ i ] = 0 ; } numDigests = 0 ; for ( i = 0 ; i < numFolders ; i ++ ) { if ( f [ i ] . numUnpackStreams != 1 || ! f [ i ] . digest_defined ) numDigests += ( uint32_t ) f [ i ] . numUnpackStreams ; } if ( type == kCRC ) { struct _7z_digests tmpDigests ; unsigned char * digestsDefined = ss -> digestsDefined ; uint32_t * digests = ss -> digests ; int di = 0 ; memset ( & tmpDigests , 0 , sizeof ( tmpDigests ) ) ; if ( read_Digests ( a , & ( tmpDigests ) , numDigests ) < 0 ) { free_Digest ( & tmpDigests ) ; return ( - 1 ) ; } for ( i = 0 ; i < numFolders ; i ++ ) { if ( f [ i ] . numUnpackStreams == 1 && f [ i ] . digest_defined ) { * digestsDefined ++ = 1 ; * digests ++ = f [ i ] . digest ; } else { unsigned j ; for ( j = 0 ; j < f [ i ] . numUnpackStreams ; j ++ , di ++ ) { * digestsDefined ++ = tmpDigests . defineds [ di ] ; * digests ++ = tmpDigests . digests [ di ] ; } } } free_Digest ( & tmpDigests ) ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; } if ( type != kEnd ) return ( - 1 ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( unpack_streams > SIZE_MAX - UMAX_ENTRY ) { return ( - 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5550\n\n```\nCWE-200 void iov_iter_pipe ( struct iov_iter * i , int direction , struct pipe_inode_info * pipe , size_t count ) { <S2SV_StartBug> BUG_ON ( direction != ITER_PIPE ) ; <S2SV_EndBug> i -> type = direction ; i -> pipe = pipe ; i -> idx = ( pipe -> curbuf + pipe -> nrbufs ) & ( pipe -> buffers - 1 ) ; i -> iov_offset = 0 ; i -> count = count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> direction != ITER_PIPE ) ; WARN_ON ( pipe -> nrbufs == pipe -> buffers\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5206\n\n```\nCWE-264 static int do_remount ( struct path * path , int flags , int mnt_flags , void * data ) { int err ; struct super_block * sb = path -> mnt -> mnt_sb ; struct mount * mnt = real_mount ( path -> mnt ) ; if ( ! check_mnt ( mnt ) ) return - EINVAL ; if ( path -> dentry != path -> mnt -> mnt_root ) return - EINVAL ; err = security_sb_remount ( sb , data ) ; if ( err ) return err ; down_write ( & sb -> s_umount ) ; if ( flags & MS_BIND ) err = change_mount_flags ( path -> mnt , flags ) ; else if ( ! capable ( CAP_SYS_ADMIN ) ) err = - EPERM ; else err = do_remount_sb ( sb , flags , data , 0 ) ; if ( ! err ) { lock_mount_hash ( ) ; <S2SV_StartBug> mnt_flags |= mnt -> mnt . mnt_flags & MNT_PROPAGATION_MASK ; <S2SV_EndBug> mnt -> mnt . mnt_flags = mnt_flags ; touch_mnt_namespace ( mnt -> mnt_ns ) ; unlock_mount_hash ( ) ; } up_write ( & sb -> s_umount ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . mnt_flags & ~ MNT_USER_SETTABLE_MASK <S2SV_ModEnd> ; mnt ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7500\n\n```\nCWE-59 <S2SV_StartBug> static int fsmVerify ( const char * path , rpmfi fi ) <S2SV_EndBug> { int rc ; int saveerrno = errno ; struct stat dsb ; mode_t mode = rpmfiFMode ( fi ) ; rc = fsmStat ( path , 1 , & dsb ) ; if ( rc ) return rc ; if ( S_ISREG ( mode ) ) { char * rmpath = rstrscat ( NULL , path , \"-RPMDELETE\" , NULL ) ; rc = fsmRename ( path , rmpath ) ; if ( ! rc ) ( void ) fsmUnlink ( rmpath ) ; else rc = RPMERR_UNLINK_FAILED ; free ( rmpath ) ; return ( rc ? rc : RPMERR_ENOENT ) ; } else if ( S_ISDIR ( mode ) ) { if ( S_ISDIR ( dsb . st_mode ) ) return 0 ; if ( S_ISLNK ( dsb . st_mode ) ) { <S2SV_StartBug> rc = fsmStat ( path , 0 , & dsb ) ; <S2SV_EndBug> if ( rc == RPMERR_ENOENT ) rc = 0 ; if ( rc ) return rc ; errno = saveerrno ; <S2SV_StartBug> if ( S_ISDIR ( dsb . st_mode ) ) return 0 ; <S2SV_EndBug> } } else if ( S_ISLNK ( mode ) ) { if ( S_ISLNK ( dsb . st_mode ) ) { char buf [ 8 * BUFSIZ ] ; size_t len ; rc = fsmReadLink ( path , buf , 8 * BUFSIZ , & len ) ; errno = saveerrno ; if ( rc ) return rc ; if ( rstreq ( rpmfiFLink ( fi ) , buf ) ) return 0 ; } } else if ( S_ISFIFO ( mode ) ) { if ( S_ISFIFO ( dsb . st_mode ) ) return 0 ; } else if ( S_ISCHR ( mode ) || S_ISBLK ( mode ) ) { if ( ( S_ISCHR ( dsb . st_mode ) || S_ISBLK ( dsb . st_mode ) ) && ( dsb . st_rdev == rpmfiFRdev ( fi ) ) ) return 0 ; } else if ( S_ISSOCK ( mode ) ) { if ( S_ISSOCK ( dsb . st_mode ) ) return 0 ; } rc = fsmUnlink ( path ) ; if ( rc == 0 ) rc = RPMERR_ENOENT ; return ( rc ? rc : RPMERR_ENOENT ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , rpmfi fi , const struct stat * fsb <S2SV_ModStart> ) ) { uid_t luid = dsb . st_uid ; <S2SV_ModStart> . st_mode ) && ( luid == 0 || luid == fsb -> st_uid ) ) <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9794\n\n```\nCWE-416 void snd_pcm_period_elapsed ( struct snd_pcm_substream * substream ) { struct snd_pcm_runtime * runtime ; unsigned long flags ; if ( PCM_RUNTIME_CHECK ( substream ) ) return ; runtime = substream -> runtime ; snd_pcm_stream_lock_irqsave ( substream , flags ) ; if ( ! snd_pcm_running ( substream ) || snd_pcm_update_hw_ptr0 ( substream , 1 ) < 0 ) goto _end ; # ifdef CONFIG_SND_PCM_TIMER if ( substream -> timer_running ) snd_timer_interrupt ( substream -> timer , 1 ) ; # endif _end : <S2SV_StartBug> snd_pcm_stream_unlock_irqrestore ( substream , flags ) ; <S2SV_EndBug> kill_fasync ( & runtime -> fasync , SIGIO , POLL_IN ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif _end : <S2SV_ModEnd> kill_fasync ( & <S2SV_ModStart> POLL_IN ) ; snd_pcm_stream_unlock_irqrestore ( substream , flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { AVFilterContext * ctx = inlink -> dst ; BoxBlurContext * s = ctx -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; AVFrame * out ; int plane ; int cw = FF_CEIL_RSHIFT ( inlink -> w , s -> hsub ) , ch = FF_CEIL_RSHIFT ( in -> height , s -> vsub ) ; int w [ 4 ] = { inlink -> w , cw , cw , inlink -> w } ; int h [ 4 ] = { in -> height , ch , ch , in -> height } ; out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; <S2SV_StartBug> for ( plane = 0 ; in -> data [ plane ] && plane < 4 ; plane ++ ) <S2SV_EndBug> hblur ( out -> data [ plane ] , out -> linesize [ plane ] , in -> data [ plane ] , in -> linesize [ plane ] , w [ plane ] , h [ plane ] , s -> radius [ plane ] , s -> power [ plane ] , s -> temp ) ; <S2SV_StartBug> for ( plane = 0 ; in -> data [ plane ] && plane < 4 ; plane ++ ) <S2SV_EndBug> vblur ( out -> data [ plane ] , out -> linesize [ plane ] , out -> data [ plane ] , out -> linesize [ plane ] , w [ plane ] , h [ plane ] , s -> radius [ plane ] , s -> power [ plane ] , s -> temp ) ; av_frame_free ( & in ) ; return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> plane < 4 <S2SV_ModStart> plane < 4 && in -> data [ plane ] && in -> linesize [ plane ] <S2SV_ModStart> = 0 ; <S2SV_ModEnd> plane < 4 <S2SV_ModStart> plane < 4 && in -> data [ plane ] && in -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9120\n\n```\nCWE-416 void ion_free ( struct ion_client * client , struct ion_handle * handle ) { <S2SV_StartBug> bool valid_handle ; <S2SV_EndBug> BUG_ON ( client != handle -> client ) ; mutex_lock ( & client -> lock ) ; <S2SV_StartBug> valid_handle = ion_handle_validate ( client , handle ) ; <S2SV_EndBug> if ( ! valid_handle ) { WARN ( 1 , \"%s:<S2SV_blank>invalid<S2SV_blank>handle<S2SV_blank>passed<S2SV_blank>to<S2SV_blank>free.\\\\n\" , __func__ ) ; mutex_unlock ( & client -> lock ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } mutex_unlock ( & client -> lock ) ; ion_handle_put ( handle ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> handle ) { <S2SV_ModEnd> BUG_ON ( client <S2SV_ModStart> lock ) ; ion_free_nolock <S2SV_ModEnd> ( client , <S2SV_ModStart> client , handle <S2SV_ModEnd> ) ; mutex_unlock <S2SV_ModStart> lock ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0840\n\n```\nCWE-119 WORD32 ih264d_cavlc_4x4res_block_totalcoeff_2to10 ( UWORD32 u4_isdc , UWORD32 u4_total_coeff_trail_one , dec_bit_stream_t * ps_bitstrm ) { UWORD32 u4_total_zeroes ; WORD32 i ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 u4_bitstream_offset = ps_bitstrm -> u4_ofst ; UWORD32 u4_trailing_ones = u4_total_coeff_trail_one & 0xFFFF ; UWORD32 u4_total_coeff = u4_total_coeff_trail_one >> 16 ; <S2SV_StartBug> WORD16 i2_level_arr [ 16 ] ; <S2SV_EndBug> tu_sblk4x4_coeff_data_t * ps_tu_4x4 ; WORD16 * pi2_coeff_data ; dec_struct_t * ps_dec = ( dec_struct_t * ) ps_bitstrm -> pv_codec_handle ; ps_tu_4x4 = ( tu_sblk4x4_coeff_data_t * ) ps_dec -> pv_parse_tu_coeff_data ; ps_tu_4x4 -> u2_sig_coeff_map = 0 ; pi2_coeff_data = & ps_tu_4x4 -> ai2_level [ 0 ] ; i = u4_total_coeff - 1 ; if ( u4_trailing_ones ) { UWORD32 u4_signs , u4_cnt = u4_trailing_ones ; WORD16 ( * ppi2_trlone_lkup ) [ 3 ] = ( WORD16 ( * ) [ 3 ] ) gai2_ih264d_trailing_one_level ; WORD16 * pi2_trlone_lkup ; GETBITS ( u4_signs , u4_bitstream_offset , pu4_bitstrm_buf , u4_cnt ) ; pi2_trlone_lkup = ppi2_trlone_lkup [ ( 1 << u4_cnt ) - 2 + u4_signs ] ; while ( u4_cnt -- ) i2_level_arr [ i -- ] = * pi2_trlone_lkup ++ ; } if ( i >= 0 ) { UWORD32 u4_lev_suffix , u4_suffix_len , u4_lev_suffix_size ; WORD32 u2_lev_code , u2_abs_value ; UWORD32 u4_lev_prefix ; FIND_ONE_IN_STREAM_32 ( u4_lev_prefix , u4_bitstream_offset , pu4_bitstrm_buf ) ; u2_lev_code = MIN ( 15 , u4_lev_prefix ) ; u2_lev_code += ( 3 == u4_trailing_ones ) ? 0 : 2 ; if ( 14 == u4_lev_prefix ) u4_lev_suffix_size = 4 ; else if ( 15 <= u4_lev_prefix ) { u2_lev_code += 15 ; u4_lev_suffix_size = u4_lev_prefix - 3 ; } else u4_lev_suffix_size = 0 ; if ( 16 <= u4_lev_prefix ) { u2_lev_code += ( ( 1 << ( u4_lev_prefix - 3 ) ) - 4096 ) ; } if ( u4_lev_suffix_size ) { GETBITS ( u4_lev_suffix , u4_bitstream_offset , pu4_bitstrm_buf , u4_lev_suffix_size ) ; u2_lev_code += u4_lev_suffix ; } u2_abs_value = ( u2_lev_code + 2 ) >> 1 ; i2_level_arr [ i -- ] = ( u2_lev_code & 1 ) ? - u2_abs_value : u2_abs_value ; u4_suffix_len = ( u2_abs_value > 3 ) ? 2 : 1 ; while ( i >= 0 ) { FIND_ONE_IN_STREAM_32 ( u4_lev_prefix , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_lev_suffix_size = ( 15 <= u4_lev_prefix ) ? ( u4_lev_prefix - 3 ) : u4_suffix_len ; GETBITS ( u4_lev_suffix , u4_bitstream_offset , pu4_bitstrm_buf , u4_lev_suffix_size ) ; u2_lev_code = ( MIN ( 15 , u4_lev_prefix ) << u4_suffix_len ) + u4_lev_suffix ; if ( 16 <= u4_lev_prefix ) { u2_lev_code += ( ( 1 << ( u4_lev_prefix - 3 ) ) - 4096 ) ; } u2_abs_value = ( u2_lev_code + 2 ) >> 1 ; i2_level_arr [ i -- ] = ( u2_lev_code & 1 ) ? - u2_abs_value : u2_abs_value ; u4_suffix_len += ( u4_suffix_len < 6 ) ? ( u2_abs_value > ( 3 << ( u4_suffix_len - 1 ) ) ) : 0 ; } } { UWORD32 u4_index ; const UWORD8 ( * ppu1_total_zero_lkup ) [ 64 ] = ( const UWORD8 ( * ) [ 64 ] ) gau1_ih264d_table_total_zero_2to10 ; NEXTBITS ( u4_index , u4_bitstream_offset , pu4_bitstrm_buf , 6 ) ; u4_total_zeroes = ppu1_total_zero_lkup [ u4_total_coeff - 2 ] [ u4_index ] ; FLUSHBITS ( u4_bitstream_offset , ( u4_total_zeroes >> 4 ) ) ; u4_total_zeroes &= 0xf ; } { const UWORD8 * pu1_table_runbefore ; UWORD32 u4_run ; WORD32 k ; UWORD32 u4_scan_pos = u4_total_coeff + u4_total_zeroes - 1 + u4_isdc ; WORD32 u4_zeroes_left = u4_total_zeroes ; k = u4_total_coeff - 1 ; while ( ( u4_zeroes_left > 6 ) && k ) { UWORD32 u4_code ; NEXTBITS ( u4_code , u4_bitstream_offset , pu4_bitstrm_buf , 3 ) ; if ( u4_code != 0 ) { FLUSHBITS ( u4_bitstream_offset , 3 ) ; u4_run = ( 7 - u4_code ) ; } else { FIND_ONE_IN_STREAM_LEN ( u4_code , u4_bitstream_offset , pu4_bitstrm_buf , 11 ) ; u4_run = ( 4 + u4_code ) ; } SET_BIT ( ps_tu_4x4 -> u2_sig_coeff_map , u4_scan_pos ) ; * pi2_coeff_data ++ = i2_level_arr [ k -- ] ; u4_zeroes_left -= u4_run ; u4_scan_pos -= ( u4_run + 1 ) ; } pu1_table_runbefore = ( UWORD8 * ) gau1_ih264d_table_run_before ; while ( ( u4_zeroes_left > 0 ) && k ) { UWORD32 u4_code ; NEXTBITS ( u4_code , u4_bitstream_offset , pu4_bitstrm_buf , 3 ) ; u4_code = pu1_table_runbefore [ u4_code + ( u4_zeroes_left << 3 ) ] ; u4_run = u4_code >> 2 ; FLUSHBITS ( u4_bitstream_offset , ( u4_code & 0x03 ) ) ; SET_BIT ( ps_tu_4x4 -> u2_sig_coeff_map , u4_scan_pos ) ; * pi2_coeff_data ++ = i2_level_arr [ k -- ] ; u4_zeroes_left -= u4_run ; u4_scan_pos -= ( u4_run + 1 ) ; } if ( u4_zeroes_left < 0 ) return - 1 ; while ( k >= 0 ) { SET_BIT ( ps_tu_4x4 -> u2_sig_coeff_map , u4_scan_pos ) ; * pi2_coeff_data ++ = i2_level_arr [ k -- ] ; u4_scan_pos -- ; } } { WORD32 offset ; offset = ( UWORD8 * ) pi2_coeff_data - ( UWORD8 * ) ps_tu_4x4 ; offset = ALIGN4 ( offset ) ; ps_dec -> pv_parse_tu_coeff_data = ( void * ) ( ( UWORD8 * ) ps_dec -> pv_parse_tu_coeff_data + offset ) ; } ps_bitstrm -> u4_ofst = u4_bitstream_offset ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 16 ; WORD16 ai2_level_arr [ 19 ] ; WORD16 * i2_level_arr = & ai2_level_arr [ 3 <S2SV_ModEnd> ] ; tu_sblk4x4_coeff_data_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14225\n\n```\nCWE-476 static void show_frame ( WriterContext * w , AVFrame * frame , AVStream * stream , AVFormatContext * fmt_ctx ) { AVBPrint pbuf ; char val_str [ 128 ] ; const char * s ; int i ; av_bprint_init ( & pbuf , 1 , AV_BPRINT_SIZE_UNLIMITED ) ; writer_print_section_header ( w , SECTION_ID_FRAME ) ; s = av_get_media_type_string ( stream -> codecpar -> codec_type ) ; if ( s ) print_str ( \"media_type\" , s ) ; else print_str_opt ( \"media_type\" , \"unknown\" ) ; print_int ( \"stream_index\" , stream -> index ) ; print_int ( \"key_frame\" , frame -> key_frame ) ; print_ts ( \"pkt_pts\" , frame -> pts ) ; print_time ( \"pkt_pts_time\" , frame -> pts , & stream -> time_base ) ; print_ts ( \"pkt_dts\" , frame -> pkt_dts ) ; print_time ( \"pkt_dts_time\" , frame -> pkt_dts , & stream -> time_base ) ; print_ts ( \"best_effort_timestamp\" , frame -> best_effort_timestamp ) ; print_time ( \"best_effort_timestamp_time\" , frame -> best_effort_timestamp , & stream -> time_base ) ; print_duration_ts ( \"pkt_duration\" , frame -> pkt_duration ) ; print_duration_time ( \"pkt_duration_time\" , frame -> pkt_duration , & stream -> time_base ) ; if ( frame -> pkt_pos != - 1 ) print_fmt ( \"pkt_pos\" , \"%\" PRId64 , frame -> pkt_pos ) ; else print_str_opt ( \"pkt_pos\" , \"N/A\" ) ; if ( frame -> pkt_size != - 1 ) print_val ( \"pkt_size\" , frame -> pkt_size , unit_byte_str ) ; else print_str_opt ( \"pkt_size\" , \"N/A\" ) ; switch ( stream -> codecpar -> codec_type ) { AVRational sar ; case AVMEDIA_TYPE_VIDEO : print_int ( \"width\" , frame -> width ) ; print_int ( \"height\" , frame -> height ) ; s = av_get_pix_fmt_name ( frame -> format ) ; if ( s ) print_str ( \"pix_fmt\" , s ) ; else print_str_opt ( \"pix_fmt\" , \"unknown\" ) ; sar = av_guess_sample_aspect_ratio ( fmt_ctx , stream , frame ) ; if ( sar . num ) { print_q ( \"sample_aspect_ratio\" , sar , ':' ) ; } else { print_str_opt ( \"sample_aspect_ratio\" , \"N/A\" ) ; } print_fmt ( \"pict_type\" , \"%c\" , av_get_picture_type_char ( frame -> pict_type ) ) ; print_int ( \"coded_picture_number\" , frame -> coded_picture_number ) ; print_int ( \"display_picture_number\" , frame -> display_picture_number ) ; print_int ( \"interlaced_frame\" , frame -> interlaced_frame ) ; print_int ( \"top_field_first\" , frame -> top_field_first ) ; print_int ( \"repeat_pict\" , frame -> repeat_pict ) ; if ( frame -> color_range != AVCOL_RANGE_UNSPECIFIED ) print_str ( \"color_range\" , av_color_range_name ( frame -> color_range ) ) ; else print_str_opt ( \"color_range\" , av_color_range_name ( frame -> color_range ) ) ; if ( frame -> colorspace != AVCOL_SPC_UNSPECIFIED ) print_str ( \"color_space\" , av_color_space_name ( frame -> colorspace ) ) ; else print_str_opt ( \"color_space\" , av_color_space_name ( frame -> colorspace ) ) ; <S2SV_StartBug> if ( frame -> color_primaries != AVCOL_PRI_UNSPECIFIED ) <S2SV_EndBug> print_str ( \"color_primaries\" , av_color_primaries_name ( frame -> color_primaries ) ) ; else print_str_opt ( \"color_primaries\" , av_color_primaries_name ( frame -> color_primaries ) ) ; if ( frame -> color_trc != AVCOL_TRC_UNSPECIFIED ) print_str ( \"color_transfer\" , av_color_transfer_name ( frame -> color_trc ) ) ; else print_str_opt ( \"color_transfer\" , av_color_transfer_name ( frame -> color_trc ) ) ; if ( frame -> chroma_location != AVCHROMA_LOC_UNSPECIFIED ) print_str ( \"chroma_location\" , av_chroma_location_name ( frame -> chroma_location ) ) ; else print_str_opt ( \"chroma_location\" , av_chroma_location_name ( frame -> chroma_location ) ) ; break ; case AVMEDIA_TYPE_AUDIO : s = av_get_sample_fmt_name ( frame -> format ) ; if ( s ) print_str ( \"sample_fmt\" , s ) ; else print_str_opt ( \"sample_fmt\" , \"unknown\" ) ; print_int ( \"nb_samples\" , frame -> nb_samples ) ; print_int ( \"channels\" , frame -> channels ) ; if ( frame -> channel_layout ) { av_bprint_clear ( & pbuf ) ; av_bprint_channel_layout ( & pbuf , frame -> channels , frame -> channel_layout ) ; print_str ( \"channel_layout\" , pbuf . str ) ; } else print_str_opt ( \"channel_layout\" , \"unknown\" ) ; break ; } if ( do_show_frame_tags ) show_tags ( w , frame -> metadata , SECTION_ID_FRAME_TAGS ) ; if ( do_show_log ) show_log ( w , SECTION_ID_FRAME_LOGS , SECTION_ID_FRAME_LOG , do_show_log ) ; if ( frame -> nb_side_data ) { writer_print_section_header ( w , SECTION_ID_FRAME_SIDE_DATA_LIST ) ; for ( i = 0 ; i < frame -> nb_side_data ; i ++ ) { AVFrameSideData * sd = frame -> side_data [ i ] ; const char * name ; writer_print_section_header ( w , SECTION_ID_FRAME_SIDE_DATA ) ; name = av_frame_side_data_name ( sd -> type ) ; print_str ( \"side_data_type\" , name ? name : \"unknown\" ) ; if ( sd -> type == AV_FRAME_DATA_DISPLAYMATRIX && sd -> size >= 9 * 4 ) { writer_print_integers ( w , \"displaymatrix\" , sd -> data , 9 , \"<S2SV_blank>%11d\" , 3 , 4 , 1 ) ; print_int ( \"rotation\" , av_display_rotation_get ( ( int32_t * ) sd -> data ) ) ; } else if ( sd -> type == AV_FRAME_DATA_GOP_TIMECODE && sd -> size >= 8 ) { char tcbuf [ AV_TIMECODE_STR_SIZE ] ; av_timecode_make_mpeg_tc_string ( tcbuf , * ( int64_t * ) ( sd -> data ) ) ; print_str ( \"timecode\" , tcbuf ) ; } else if ( sd -> type == AV_FRAME_DATA_MASTERING_DISPLAY_METADATA ) { AVMasteringDisplayMetadata * metadata = ( AVMasteringDisplayMetadata * ) sd -> data ; if ( metadata -> has_primaries ) { print_q ( \"red_x\" , metadata -> display_primaries [ 0 ] [ 0 ] , '/' ) ; print_q ( \"red_y\" , metadata -> display_primaries [ 0 ] [ 1 ] , '/' ) ; print_q ( \"green_x\" , metadata -> display_primaries [ 1 ] [ 0 ] , '/' ) ; print_q ( \"green_y\" , metadata -> display_primaries [ 1 ] [ 1 ] , '/' ) ; print_q ( \"blue_x\" , metadata -> display_primaries [ 2 ] [ 0 ] , '/' ) ; print_q ( \"blue_y\" , metadata -> display_primaries [ 2 ] [ 1 ] , '/' ) ; print_q ( \"white_point_x\" , metadata -> white_point [ 0 ] , '/' ) ; print_q ( \"white_point_y\" , metadata -> white_point [ 1 ] , '/' ) ; } if ( metadata -> has_luminance ) { print_q ( \"min_luminance\" , metadata -> min_luminance , '/' ) ; print_q ( \"max_luminance\" , metadata -> max_luminance , '/' ) ; } } else if ( sd -> type == AV_FRAME_DATA_CONTENT_LIGHT_LEVEL ) { AVContentLightMetadata * metadata = ( AVContentLightMetadata * ) sd -> data ; print_int ( \"max_content\" , metadata -> MaxCLL ) ; print_int ( \"max_average\" , metadata -> MaxFALL ) ; } else if ( sd -> type == AV_FRAME_DATA_ICC_PROFILE ) { AVDictionaryEntry * tag = av_dict_get ( sd -> metadata , \"name\" , NULL , AV_DICT_MATCH_CASE ) ; if ( tag ) print_str ( tag -> key , tag -> value ) ; print_int ( \"size\" , sd -> size ) ; } writer_print_section_footer ( w ) ; } writer_print_section_footer ( w ) ; } writer_print_section_footer ( w ) ; av_bprint_finalize ( & pbuf , NULL ) ; fflush ( stdout ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; print_primaries ( w , <S2SV_ModEnd> frame -> color_primaries <S2SV_ModStart> frame -> color_primaries <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7016\n\n```\nCWE-119 static int get_siz ( Jpeg2000DecoderContext * s ) { int i ; int ncomponents ; uint32_t log2_chroma_wh = 0 ; const enum AVPixelFormat * possible_fmts = NULL ; int possible_fmts_nb = 0 ; if ( bytestream2_get_bytes_left ( & s -> g ) < 36 ) return AVERROR_INVALIDDATA ; s -> avctx -> profile = bytestream2_get_be16u ( & s -> g ) ; s -> width = bytestream2_get_be32u ( & s -> g ) ; s -> height = bytestream2_get_be32u ( & s -> g ) ; s -> image_offset_x = bytestream2_get_be32u ( & s -> g ) ; s -> image_offset_y = bytestream2_get_be32u ( & s -> g ) ; s -> tile_width = bytestream2_get_be32u ( & s -> g ) ; s -> tile_height = bytestream2_get_be32u ( & s -> g ) ; s -> tile_offset_x = bytestream2_get_be32u ( & s -> g ) ; s -> tile_offset_y = bytestream2_get_be32u ( & s -> g ) ; ncomponents = bytestream2_get_be16u ( & s -> g ) ; if ( ncomponents <= 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components:<S2SV_blank>%d\\\\n\" , s -> ncomponents ) ; return AVERROR_INVALIDDATA ; } if ( ncomponents > 4 ) { avpriv_request_sample ( s -> avctx , \"Support<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>components\" , s -> ncomponents ) ; return AVERROR_PATCHWELCOME ; } s -> ncomponents = ncomponents ; if ( s -> tile_width <= 0 || s -> tile_height <= 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>tile<S2SV_blank>dimension<S2SV_blank>%dx%d.\\\\n\" , s -> tile_width , s -> tile_height ) ; return AVERROR_INVALIDDATA ; } if ( bytestream2_get_bytes_left ( & s -> g ) < 3 * s -> ncomponents ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < s -> ncomponents ; i ++ ) { uint8_t x = bytestream2_get_byteu ( & s -> g ) ; s -> cbps [ i ] = ( x & 0x7f ) + 1 ; s -> precision = FFMAX ( s -> cbps [ i ] , s -> precision ) ; s -> sgnd [ i ] = ! ! ( x & 0x80 ) ; s -> cdx [ i ] = bytestream2_get_byteu ( & s -> g ) ; s -> cdy [ i ] = bytestream2_get_byteu ( & s -> g ) ; <S2SV_StartBug> if ( ! s -> cdx [ i ] || ! s -> cdy [ i ] ) { <S2SV_EndBug> av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>sample<S2SV_blank>seperation\\\\n\" ) ; return AVERROR_INVALIDDATA ; } log2_chroma_wh |= s -> cdy [ i ] >> 1 << i * 4 | s -> cdx [ i ] >> 1 << i * 4 + 2 ; } s -> numXtiles = ff_jpeg2000_ceildiv ( s -> width - s -> tile_offset_x , s -> tile_width ) ; s -> numYtiles = ff_jpeg2000_ceildiv ( s -> height - s -> tile_offset_y , s -> tile_height ) ; if ( s -> numXtiles * ( uint64_t ) s -> numYtiles > INT_MAX / sizeof ( * s -> tile ) ) { s -> numXtiles = s -> numYtiles = 0 ; return AVERROR ( EINVAL ) ; } s -> tile = av_mallocz_array ( s -> numXtiles * s -> numYtiles , sizeof ( * s -> tile ) ) ; if ( ! s -> tile ) { s -> numXtiles = s -> numYtiles = 0 ; return AVERROR ( ENOMEM ) ; } for ( i = 0 ; i < s -> numXtiles * s -> numYtiles ; i ++ ) { Jpeg2000Tile * tile = s -> tile + i ; tile -> comp = av_mallocz ( s -> ncomponents * sizeof ( * tile -> comp ) ) ; if ( ! tile -> comp ) return AVERROR ( ENOMEM ) ; } s -> avctx -> width = ff_jpeg2000_ceildivpow2 ( s -> width - s -> image_offset_x , s -> reduction_factor ) ; s -> avctx -> height = ff_jpeg2000_ceildivpow2 ( s -> height - s -> image_offset_y , s -> reduction_factor ) ; if ( s -> avctx -> profile == FF_PROFILE_JPEG2000_DCINEMA_2K || s -> avctx -> profile == FF_PROFILE_JPEG2000_DCINEMA_4K ) { possible_fmts = xyz_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( xyz_pix_fmts ) ; } else { switch ( s -> colour_space ) { case 16 : possible_fmts = rgb_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( rgb_pix_fmts ) ; break ; case 17 : possible_fmts = gray_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( gray_pix_fmts ) ; break ; case 18 : possible_fmts = yuv_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( yuv_pix_fmts ) ; break ; default : possible_fmts = all_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( all_pix_fmts ) ; break ; } } for ( i = 0 ; i < possible_fmts_nb ; ++ i ) { if ( pix_fmt_match ( possible_fmts [ i ] , ncomponents , s -> precision , log2_chroma_wh , s -> pal8 ) ) { s -> avctx -> pix_fmt = possible_fmts [ i ] ; break ; } } if ( s -> avctx -> pix_fmt == AV_PIX_FMT_NONE ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>pix_fmt,<S2SV_blank>profile:<S2SV_blank>%d,<S2SV_blank>colour_space:<S2SV_blank>%d,<S2SV_blank>\" \"components:<S2SV_blank>%d,<S2SV_blank>precision:<S2SV_blank>%d,<S2SV_blank>\" \"cdx[1]:<S2SV_blank>%d,<S2SV_blank>cdy[1]:<S2SV_blank>%d,<S2SV_blank>cdx[2]:<S2SV_blank>%d,<S2SV_blank>cdy[2]:<S2SV_blank>%d\\\\n\" , s -> avctx -> profile , s -> colour_space , ncomponents , s -> precision , ncomponents > 2 ? s -> cdx [ 1 ] : 0 , ncomponents > 2 ? s -> cdy [ 1 ] : 0 , ncomponents > 2 ? s -> cdx [ 2 ] : 0 , ncomponents > 2 ? s -> cdy [ 2 ] : 0 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ] || s -> cdx [ i ] == 3 || s -> cdx [ i ] > 4 || <S2SV_ModStart> [ i ] || s -> cdy [ i ] == 3 || s -> cdy [ i ] > 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10540\n\n```\nCWE-787 int ParseRiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int is_rf64 = ! strncmp ( fourcc , \"RF64\" , 4 ) , got_ds64 = 0 ; int64_t total_samples = 0 , infilesize ; RiffChunkHeader riff_chunk_header ; ChunkHeader chunk_header ; WaveHeader WaveHeader ; DS64Chunk ds64_chunk ; uint32_t bcount ; CLEAR ( WaveHeader ) ; CLEAR ( ds64_chunk ) ; infilesize = DoGetFileSize ( infile ) ; if ( ! is_rf64 && infilesize >= 4294967296LL && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) ) { error_line ( \"can\\'t<S2SV_blank>handle<S2SV_blank>.WAV<S2SV_blank>files<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>4<S2SV_blank>GB<S2SV_blank>(non-standard)!\" ) ; return WAVPACK_SOFT_ERROR ; } memcpy ( & riff_chunk_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & riff_chunk_header ) + 4 , sizeof ( RiffChunkHeader ) - 4 , & bcount ) || bcount != sizeof ( RiffChunkHeader ) - 4 || strncmp ( riff_chunk_header . formType , \"WAVE\" , 4 ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & riff_chunk_header , sizeof ( RiffChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( ChunkHeader ) , & bcount ) || bcount != sizeof ( ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , ChunkHeaderFormat ) ; if ( ! strncmp ( chunk_header . ckID , \"ds64\" , 4 ) ) { if ( chunk_header . ckSize < sizeof ( DS64Chunk ) || ! DoReadFile ( infile , & ds64_chunk , sizeof ( DS64Chunk ) , & bcount ) || bcount != sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & ds64_chunk , sizeof ( DS64Chunk ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } got_ds64 = 1 ; WavpackLittleEndianToNative ( & ds64_chunk , DS64ChunkFormat ) ; if ( debug_logging_mode ) error_line ( \"DS64:<S2SV_blank>riffSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>dataSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>sampleCount<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>table_length<S2SV_blank>=<S2SV_blank>%d\" , ( long long ) ds64_chunk . riffSize64 , ( long long ) ds64_chunk . dataSize64 , ( long long ) ds64_chunk . sampleCount64 , ds64_chunk . tableLength ) ; if ( ds64_chunk . tableLength * sizeof ( CS64Chunk ) != chunk_header . ckSize - sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } while ( ds64_chunk . tableLength -- ) { CS64Chunk cs64_chunk ; if ( ! DoReadFile ( infile , & cs64_chunk , sizeof ( CS64Chunk ) , & bcount ) || bcount != sizeof ( CS64Chunk ) || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & cs64_chunk , sizeof ( CS64Chunk ) ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } } } else if ( ! strncmp ( chunk_header . ckID , \"fmt<S2SV_blank>\" , 4 ) ) { int supported = TRUE , format ; if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.WAV<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>WAV<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else if ( config -> float_norm_exp ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point<S2SV_blank>(Audition<S2SV_blank>%d:%d<S2SV_blank>float<S2SV_blank>type<S2SV_blank>1)\" , config -> float_norm_exp - 126 , 150 - config -> float_norm_exp ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! strncmp ( chunk_header . ckID , \"data\" , 4 ) ) { int64_t data_chunk_size = ( got_ds64 && chunk_header . ckSize == ( uint32_t ) - 1 ) ? ds64_chunk . dataSize64 : chunk_header . ckSize ; if ( ! WaveHeader . NumChannels || ( is_rf64 && ! got_ds64 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && infilesize - data_chunk_size > 16777216 ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( config -> qmode & QMODE_IGNORE_LENGTH ) { if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { total_samples = data_chunk_size / WaveHeader . BlockAlign ; if ( got_ds64 && total_samples != ds64_chunk . sampleCount64 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 1 ) & ~ 1L ; <S2SV_StartBug> char * buff = malloc ( bytes_to_copy ) ; <S2SV_EndBug> if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2925\n\n```\nCWE-254 static inline int handle_dots ( struct nameidata * nd , int type ) { if ( type == LAST_DOTDOT ) { if ( nd -> flags & LOOKUP_RCU ) { return follow_dotdot_rcu ( nd ) ; } else <S2SV_StartBug> follow_dotdot ( nd ) ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } else return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 int main ( int argc , char * * argv ) { int i , n_valid , do_write , do_scrub ; char * c , * dname , * name ; DIR * dir ; FILE * fp ; pdf_t * pdf ; pdf_flag_t flags ; if ( argc < 2 ) usage ( ) ; do_write = do_scrub = flags = 0 ; name = NULL ; for ( i = 1 ; i < argc ; i ++ ) { if ( strncmp ( argv [ i ] , \"-w\" , 2 ) == 0 ) do_write = 1 ; else if ( strncmp ( argv [ i ] , \"-i\" , 2 ) == 0 ) flags |= PDF_FLAG_DISP_CREATOR ; else if ( strncmp ( argv [ i ] , \"-q\" , 2 ) == 0 ) flags |= PDF_FLAG_QUIET ; else if ( strncmp ( argv [ i ] , \"-s\" , 2 ) == 0 ) do_scrub = 1 ; else if ( argv [ i ] [ 0 ] != '-' ) name = argv [ i ] ; else if ( argv [ i ] [ 0 ] == '-' ) usage ( ) ; } if ( ! name ) usage ( ) ; if ( ! ( fp = fopen ( name , \"r\" ) ) ) { ERR ( \"Could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , argv [ 1 ] ) ; return - 1 ; } else if ( ! pdf_is_pdf ( fp ) ) { ERR ( \"\\'%s\\'<S2SV_blank>specified<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>PDF\\\\n\" , name ) ; fclose ( fp ) ; return - 1 ; } if ( ! ( pdf = init_pdf ( fp , name ) ) ) { fclose ( fp ) ; return - 1 ; } for ( i = 0 , n_valid = 0 ; i < pdf -> n_xrefs ; i ++ ) if ( pdf -> xrefs [ i ] . version ) ++ n_valid ; if ( n_valid < 2 ) { if ( ! ( flags & ( PDF_FLAG_QUIET | PDF_FLAG_DISP_CREATOR ) ) ) printf ( \"%s:<S2SV_blank>There<S2SV_blank>is<S2SV_blank>only<S2SV_blank>one<S2SV_blank>version<S2SV_blank>of<S2SV_blank>this<S2SV_blank>PDF\\\\n\" , pdf -> name ) ; if ( do_write ) { fclose ( fp ) ; pdf_delete ( pdf ) ; return 0 ; } } dname = NULL ; if ( do_write ) { if ( ( c = strrchr ( name , '/' ) ) ) name = c + 1 ; if ( ( c = strrchr ( name , '.' ) ) ) * c = '\\\\0' ; <S2SV_StartBug> dname = malloc ( strlen ( name ) + 16 ) ; <S2SV_EndBug> sprintf ( dname , \"%s-versions\" , name ) ; if ( ! ( dir = opendir ( dname ) ) ) mkdir ( dname , S_IRWXU ) ; else { ERR ( \"This<S2SV_blank>directory<S2SV_blank>already<S2SV_blank>exists,<S2SV_blank>PDF<S2SV_blank>version<S2SV_blank>extraction<S2SV_blank>will<S2SV_blank>\" \"not<S2SV_blank>occur.\\\\n\" ) ; fclose ( fp ) ; closedir ( dir ) ; free ( dname ) ; pdf_delete ( pdf ) ; return - 1 ; } for ( i = 0 ; i < pdf -> n_xrefs ; i ++ ) if ( pdf -> xrefs [ i ] . version ) write_version ( fp , name , dname , & pdf -> xrefs [ i ] ) ; } pdf_summarize ( fp , pdf , dname , flags ) ; if ( do_scrub ) scrub_document ( fp , pdf ) ; if ( flags & PDF_FLAG_DISP_CREATOR ) display_creator ( fp , pdf ) ; fclose ( fp ) ; free ( dname ) ; pdf_delete ( pdf ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dname = safe_calloc <S2SV_ModEnd> ( strlen (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 static int32 makepol ( QPRS_STATE * state ) { int32 val = 0 , type ; int32 lenval = 0 ; char * strval = NULL ; int32 stack [ STACKDEPTH ] ; int32 lenstack = 0 ; uint16 flag = 0 ; <S2SV_StartBug> while ( ( type = gettoken_query ( state , & val , & lenval , & strval , & flag ) ) != END ) <S2SV_EndBug> { switch ( type ) { case VAL : pushval_asis ( state , VAL , strval , lenval , flag ) ; while ( lenstack && ( stack [ lenstack - 1 ] == ( int32 ) '&' || stack [ lenstack - 1 ] == ( int32 ) '!' ) ) { lenstack -- ; pushquery ( state , OPR , stack [ lenstack ] , 0 , 0 , 0 ) ; } break ; case OPR : if ( lenstack && val == ( int32 ) '|' ) pushquery ( state , OPR , val , 0 , 0 , 0 ) ; else { if ( lenstack == STACKDEPTH ) elog ( ERROR , \"stack<S2SV_blank>too<S2SV_blank>short\" ) ; stack [ lenstack ] = val ; lenstack ++ ; } break ; case OPEN : if ( makepol ( state ) == ERR ) return ERR ; while ( lenstack && ( stack [ lenstack - 1 ] == ( int32 ) '&' || stack [ lenstack - 1 ] == ( int32 ) '!' ) ) { lenstack -- ; pushquery ( state , OPR , stack [ lenstack ] , 0 , 0 , 0 ) ; } break ; case CLOSE : while ( lenstack ) { lenstack -- ; pushquery ( state , OPR , stack [ lenstack ] , 0 , 0 , 0 ) ; } ; return END ; break ; case ERR : default : ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) ) ) ; return ERR ; } } while ( lenstack ) { lenstack -- ; pushquery ( state , OPR , stack [ lenstack ] , 0 , 0 , 0 ) ; } ; return END ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; check_stack_depth ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8543\n\n```\nCWE-000 static int dn_create ( struct net * net , struct socket * sock , int protocol , int kern ) { <S2SV_StartBug> struct sock * sk ; <S2SV_EndBug> if ( ! net_eq ( net , & init_net ) ) return - EAFNOSUPPORT ; switch ( sock -> type ) { case SOCK_SEQPACKET : if ( protocol != DNPROTO_NSP ) return - EPROTONOSUPPORT ; break ; case SOCK_STREAM : break ; default : return - ESOCKTNOSUPPORT ; } if ( ( sk = dn_alloc_sock ( net , sock , GFP_KERNEL , kern ) ) == NULL ) return - ENOBUFS ; sk -> sk_protocol = protocol ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock * sk ; if ( protocol < 0 || protocol > SK_PROTOCOL_MAX ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void usage ( char * progname ) { <S2SV_EndBug> printf ( \"Usage:\\\\n\" ) ; printf ( \"%s<S2SV_blank><input_yuv><S2SV_blank><width>x<height><S2SV_blank><target_width>x<target_height><S2SV_blank>\" , <S2SV_StartBug> progname ) ; <S2SV_EndBug> printf ( \"<output_yuv><S2SV_blank>[<frames>]\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage ( <S2SV_ModEnd> ) { printf <S2SV_ModStart> ( \"%s<S2SV_blank><input_yuv><S2SV_blank><width>x<height><S2SV_blank><target_width>x<target_height><S2SV_blank>\" , exec_name <S2SV_ModEnd> ) ; printf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 NOEXPORT void transfer ( CLI * c ) { int timeout ; int pending ; # if OPENSSL_VERSION_NUMBER >= 0x10100000L int has_pending = 0 , prev_has_pending ; # endif <S2SV_StartBug> int watchdog = 0 ; <S2SV_EndBug> ssize_t num ; int err ; int sock_open_rd = 1 , sock_open_wr = 1 ; int shutdown_wants_read = 0 , shutdown_wants_write = 0 ; int read_wants_read = 0 , read_wants_write = 0 ; int write_wants_read = 0 , write_wants_write = 0 ; int sock_can_rd , sock_can_wr , ssl_can_rd , ssl_can_wr ; # ifdef USE_WIN32 unsigned long bytes ; # else int bytes ; # endif c -> sock_ptr = c -> ssl_ptr = 0 ; do { read_wants_read |= ! ( SSL_get_shutdown ( c -> ssl ) & SSL_RECEIVED_SHUTDOWN ) && c -> ssl_ptr < BUFFSIZE && ! read_wants_write ; write_wants_write |= ! ( SSL_get_shutdown ( c -> ssl ) & SSL_SENT_SHUTDOWN ) && c -> sock_ptr && ! write_wants_read ; s_poll_init ( c -> fds , 0 ) ; if ( sock_open_rd ) s_poll_add ( c -> fds , c -> sock_rfd -> fd , c -> sock_ptr < BUFFSIZE , 0 ) ; if ( sock_open_wr ) s_poll_add ( c -> fds , c -> sock_wfd -> fd , 0 , c -> ssl_ptr > 0 ) ; if ( SSL_get_shutdown ( c -> ssl ) != ( SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ) { s_poll_add ( c -> fds , c -> ssl_rfd -> fd , read_wants_read || write_wants_read || shutdown_wants_read , 0 ) ; s_poll_add ( c -> fds , c -> ssl_wfd -> fd , 0 , read_wants_write || write_wants_write || shutdown_wants_write ) ; } pending = SSL_pending ( c -> ssl ) ; # if OPENSSL_VERSION_NUMBER >= 0x10100000L prev_has_pending = has_pending ; has_pending = SSL_has_pending ( c -> ssl ) ; pending = pending || ( has_pending && ! prev_has_pending ) ; # endif if ( read_wants_read && pending ) { timeout = 0 ; } else if ( ( sock_open_rd && ! ( SSL_get_shutdown ( c -> ssl ) & SSL_RECEIVED_SHUTDOWN ) ) || c -> ssl_ptr || c -> sock_ptr ) { timeout = c -> opt -> timeout_idle ; } else { timeout = c -> opt -> timeout_close ; } err = s_poll_wait ( c -> fds , timeout , 0 ) ; switch ( err ) { case - 1 : sockerror ( \"transfer:<S2SV_blank>s_poll_wait\" ) ; throw_exception ( c , 1 ) ; case 0 : if ( read_wants_read && pending ) break ; if ( ( sock_open_rd && ! ( SSL_get_shutdown ( c -> ssl ) & SSL_RECEIVED_SHUTDOWN ) ) || c -> ssl_ptr || c -> sock_ptr ) { s_log ( LOG_INFO , \"transfer:<S2SV_blank>s_poll_wait:\" \"<S2SV_blank>TIMEOUTidle<S2SV_blank>exceeded:<S2SV_blank>sending<S2SV_blank>reset\" ) ; s_poll_dump ( c -> fds , LOG_DEBUG ) ; throw_exception ( c , 1 ) ; } s_log ( LOG_ERR , \"transfer:<S2SV_blank>s_poll_wait:\" \"<S2SV_blank>TIMEOUTclose<S2SV_blank>exceeded:<S2SV_blank>closing\" ) ; s_poll_dump ( c -> fds , LOG_DEBUG ) ; return ; } sock_can_rd = s_poll_canread ( c -> fds , c -> sock_rfd -> fd ) ; sock_can_wr = s_poll_canwrite ( c -> fds , c -> sock_wfd -> fd ) ; ssl_can_rd = s_poll_canread ( c -> fds , c -> ssl_rfd -> fd ) ; ssl_can_wr = s_poll_canwrite ( c -> fds , c -> ssl_wfd -> fd ) ; if ( c -> sock_rfd -> fd == c -> sock_wfd -> fd ) { if ( ( sock_can_rd || sock_can_wr ) && s_poll_err ( c -> fds , c -> sock_rfd -> fd ) ) { err = get_socket_error ( c -> sock_rfd -> fd ) ; if ( err ) log_error ( LOG_INFO , err , \"socket<S2SV_blank>fd\" ) ; } } else { if ( sock_can_rd && s_poll_err ( c -> fds , c -> sock_rfd -> fd ) ) { err = get_socket_error ( c -> sock_rfd -> fd ) ; if ( err ) log_error ( LOG_INFO , err , \"socket<S2SV_blank>rfd\" ) ; } if ( sock_can_wr && s_poll_err ( c -> fds , c -> sock_wfd -> fd ) ) { err = get_socket_error ( c -> sock_wfd -> fd ) ; if ( err ) log_error ( LOG_INFO , err , \"socket<S2SV_blank>wfd\" ) ; } } if ( c -> ssl_rfd -> fd == c -> ssl_wfd -> fd ) { if ( ( ssl_can_rd || ssl_can_wr ) && s_poll_err ( c -> fds , c -> ssl_rfd -> fd ) ) { err = get_socket_error ( c -> ssl_rfd -> fd ) ; if ( err ) log_error ( LOG_INFO , err , \"TLS<S2SV_blank>fd\" ) ; } } else { if ( ssl_can_rd && s_poll_err ( c -> fds , c -> ssl_rfd -> fd ) ) { err = get_socket_error ( c -> ssl_rfd -> fd ) ; if ( err ) log_error ( LOG_INFO , err , \"TLS<S2SV_blank>rfd\" ) ; } if ( c -> ssl_rfd -> fd != c -> ssl_wfd -> fd && ssl_can_wr && s_poll_err ( c -> fds , c -> ssl_wfd -> fd ) ) { err = get_socket_error ( c -> ssl_wfd -> fd ) ; if ( err ) log_error ( LOG_INFO , err , \"TLS<S2SV_blank>wfd\" ) ; } } if ( ! ( sock_can_rd || sock_can_wr || ssl_can_rd || ssl_can_wr ) ) { if ( s_poll_hup ( c -> fds , c -> sock_rfd -> fd ) || s_poll_hup ( c -> fds , c -> sock_wfd -> fd ) ) { if ( c -> ssl_ptr ) { s_log ( LOG_ERR , \"Socket<S2SV_blank>closed<S2SV_blank>(HUP)<S2SV_blank>with<S2SV_blank>%ld<S2SV_blank>unsent<S2SV_blank>byte(s)\" , ( long ) c -> ssl_ptr ) ; throw_exception ( c , 1 ) ; } s_log ( LOG_INFO , \"Socket<S2SV_blank>closed<S2SV_blank>(HUP)\" ) ; sock_open_rd = sock_open_wr = 0 ; } else if ( s_poll_hup ( c -> fds , c -> ssl_rfd -> fd ) || s_poll_hup ( c -> fds , c -> ssl_wfd -> fd ) ) { if ( c -> sock_ptr ) { s_log ( LOG_ERR , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(HUP)<S2SV_blank>with<S2SV_blank>%ld<S2SV_blank>unsent<S2SV_blank>byte(s)\" , ( long ) c -> sock_ptr ) ; throw_exception ( c , 1 ) ; } s_log ( LOG_INFO , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(HUP)\" ) ; SSL_set_shutdown ( c -> ssl , SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ; } } if ( c -> reneg_state == RENEG_DETECTED && ! c -> opt -> option . renegotiation ) { s_log ( LOG_ERR , \"Aborting<S2SV_blank>due<S2SV_blank>to<S2SV_blank>renegotiation<S2SV_blank>request\" ) ; throw_exception ( c , 1 ) ; } if ( shutdown_wants_read || shutdown_wants_write ) { <S2SV_StartBug> num = SSL_shutdown ( c -> ssl ) ; <S2SV_EndBug> if ( num < 0 ) <S2SV_StartBug> err = SSL_get_error ( c -> ssl , ( int ) num ) ; <S2SV_EndBug> else err = SSL_ERROR_NONE ; switch ( err ) { case SSL_ERROR_NONE : s_log ( LOG_INFO , \"SSL_shutdown<S2SV_blank>successfully<S2SV_blank>sent<S2SV_blank>close_notify<S2SV_blank>alert\" ) ; shutdown_wants_read = shutdown_wants_write = 0 ; break ; <S2SV_StartBug> case SSL_ERROR_SYSCALL : <S2SV_EndBug> if ( parse_socket_error ( c , \"SSL_shutdown\" ) ) break ; SSL_set_shutdown ( c -> ssl , SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ; shutdown_wants_read = shutdown_wants_write = 0 ; break ; <S2SV_StartBug> case SSL_ERROR_ZERO_RETURN : <S2SV_EndBug> SSL_set_shutdown ( c -> ssl , SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ; shutdown_wants_read = shutdown_wants_write = 0 ; break ; <S2SV_StartBug> case SSL_ERROR_WANT_WRITE : <S2SV_EndBug> s_log ( LOG_DEBUG , \"SSL_shutdown<S2SV_blank>returned<S2SV_blank>WANT_WRITE:<S2SV_blank>retrying\" ) ; shutdown_wants_read = 0 ; shutdown_wants_write = 1 ; break ; case SSL_ERROR_WANT_READ : s_log ( LOG_DEBUG , \"SSL_shutdown<S2SV_blank>returned<S2SV_blank>WANT_READ:<S2SV_blank>retrying\" ) ; shutdown_wants_read = 1 ; shutdown_wants_write = 0 ; break ; case SSL_ERROR_SSL : sslerror ( \"SSL_shutdown\" ) ; throw_exception ( c , 1 ) ; default : s_log ( LOG_ERR , \"SSL_shutdown/SSL_get_error<S2SV_blank>returned<S2SV_blank>%d\" , err ) ; throw_exception ( c , 1 ) ; } } if ( sock_open_wr && sock_can_wr ) { <S2SV_StartBug> num = writesocket ( c -> sock_wfd -> fd , c -> ssl_buff , c -> ssl_ptr ) ; <S2SV_EndBug> switch ( num ) { case - 1 : if ( parse_socket_error ( c , \"writesocket\" ) ) break ; sock_open_rd = sock_open_wr = 0 ; break ; case 0 : s_log ( LOG_DEBUG , \"writesocket<S2SV_blank>returned<S2SV_blank>0\" ) ; break ; default : memmove ( c -> ssl_buff , c -> ssl_buff + num , c -> ssl_ptr - ( size_t ) num ) ; c -> ssl_ptr -= ( size_t ) num ; memset ( c -> ssl_buff + c -> ssl_ptr , 0 , ( size_t ) num ) ; c -> sock_bytes += ( size_t ) num ; watchdog = 0 ; } } if ( sock_open_rd && sock_can_rd ) { <S2SV_StartBug> num = readsocket ( c -> sock_rfd -> fd , <S2SV_EndBug> c -> sock_buff + c -> sock_ptr , BUFFSIZE - c -> sock_ptr ) ; switch ( num ) { case - 1 : if ( parse_socket_error ( c , \"readsocket\" ) ) break ; sock_open_rd = sock_open_wr = 0 ; break ; case 0 : s_log ( LOG_INFO , \"Read<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(readsocket)\" ) ; sock_open_rd = 0 ; break ; default : c -> sock_ptr += ( size_t ) num ; watchdog = 0 ; } } read_wants_read |= ! ( SSL_get_shutdown ( c -> ssl ) & SSL_RECEIVED_SHUTDOWN ) && c -> ssl_ptr < BUFFSIZE && ! read_wants_write ; write_wants_write |= ! ( SSL_get_shutdown ( c -> ssl ) & SSL_SENT_SHUTDOWN ) && c -> sock_ptr && ! write_wants_read ; if ( ( write_wants_read && ssl_can_rd ) || ( write_wants_write && ssl_can_wr ) ) { <S2SV_StartBug> write_wants_read = 0 ; <S2SV_EndBug> write_wants_write = 0 ; <S2SV_StartBug> num = SSL_write ( c -> ssl , c -> sock_buff , ( int ) ( c -> sock_ptr ) ) ; <S2SV_EndBug> <S2SV_StartBug> switch ( err = SSL_get_error ( c -> ssl , ( int ) num ) ) { <S2SV_EndBug> case SSL_ERROR_NONE : if ( num == 0 ) { s_log ( LOG_DEBUG , \"SSL_write<S2SV_blank>returned<S2SV_blank>0\" ) ; break ; } memmove ( c -> sock_buff , c -> sock_buff + num , c -> sock_ptr - ( size_t ) num ) ; c -> sock_ptr -= ( size_t ) num ; memset ( c -> sock_buff + c -> sock_ptr , 0 , ( size_t ) num ) ; c -> ssl_bytes += ( size_t ) num ; watchdog = 0 ; break ; case SSL_ERROR_WANT_WRITE : s_log ( LOG_DEBUG , \"SSL_write<S2SV_blank>returned<S2SV_blank>WANT_WRITE:<S2SV_blank>retrying\" ) ; write_wants_write = 1 ; break ; case SSL_ERROR_WANT_READ : s_log ( LOG_DEBUG , \"SSL_write<S2SV_blank>returned<S2SV_blank>WANT_READ:<S2SV_blank>retrying\" ) ; write_wants_read = 1 ; break ; case SSL_ERROR_WANT_X509_LOOKUP : s_log ( LOG_DEBUG , \"SSL_write<S2SV_blank>returned<S2SV_blank>WANT_X509_LOOKUP:<S2SV_blank>retrying\" ) ; break ; <S2SV_StartBug> case SSL_ERROR_SYSCALL : <S2SV_EndBug> <S2SV_StartBug> if ( num && parse_socket_error ( c , \"SSL_write\" ) ) <S2SV_EndBug> break ; if ( c -> sock_ptr ) { s_log ( LOG_ERR , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(SSL_write)<S2SV_blank>with<S2SV_blank>%ld<S2SV_blank>unsent<S2SV_blank>byte(s)\" , ( long ) c -> sock_ptr ) ; throw_exception ( c , 1 ) ; } s_log ( LOG_INFO , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(SSL_write)\" ) ; SSL_set_shutdown ( c -> ssl , SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ; break ; <S2SV_StartBug> case SSL_ERROR_ZERO_RETURN : <S2SV_EndBug> <S2SV_StartBug> s_log ( LOG_INFO , \"TLS<S2SV_blank>closed<S2SV_blank>(SSL_write)\" ) ; <S2SV_EndBug> if ( SSL_version ( c -> ssl ) == SSL2_VERSION ) SSL_set_shutdown ( c -> ssl , SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ; break ; <S2SV_StartBug> case SSL_ERROR_SSL : <S2SV_EndBug> sslerror ( \"SSL_write\" ) ; throw_exception ( c , 1 ) ; default : s_log ( LOG_ERR , \"SSL_write/SSL_get_error<S2SV_blank>returned<S2SV_blank>%d\" , err ) ; throw_exception ( c , 1 ) ; } } if ( ( read_wants_read && ( ssl_can_rd || pending ) ) || ( read_wants_write && ssl_can_wr ) ) { read_wants_read = 0 ; read_wants_write = 0 ; num = SSL_read ( c -> ssl , c -> ssl_buff + c -> ssl_ptr , ( int ) ( BUFFSIZE - c -> ssl_ptr ) ) ; switch ( err = SSL_get_error ( c -> ssl , ( int ) num ) ) { case SSL_ERROR_NONE : if ( num == 0 ) { s_log ( LOG_DEBUG , \"SSL_read<S2SV_blank>returned<S2SV_blank>0\" ) ; break ; } c -> ssl_ptr += ( size_t ) num ; watchdog = 0 ; break ; case SSL_ERROR_WANT_WRITE : s_log ( LOG_DEBUG , \"SSL_read<S2SV_blank>returned<S2SV_blank>WANT_WRITE:<S2SV_blank>retrying\" ) ; read_wants_write = 1 ; break ; case SSL_ERROR_WANT_READ : # if 0 s_log ( LOG_DEBUG , \"SSL_read<S2SV_blank>returned<S2SV_blank>WANT_READ:<S2SV_blank>retrying\" ) ; # endif read_wants_read = 1 ; break ; case SSL_ERROR_WANT_X509_LOOKUP : s_log ( LOG_DEBUG , \"SSL_read<S2SV_blank>returned<S2SV_blank>WANT_X509_LOOKUP:<S2SV_blank>retrying\" ) ; break ; case SSL_ERROR_SYSCALL : if ( num && parse_socket_error ( c , \"SSL_read\" ) ) break ; if ( c -> sock_ptr || write_wants_write ) { s_log ( LOG_ERR , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(SSL_read)<S2SV_blank>with<S2SV_blank>%ld<S2SV_blank>unsent<S2SV_blank>byte(s)\" , ( long ) c -> sock_ptr ) ; throw_exception ( c , 1 ) ; } s_log ( LOG_INFO , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(SSL_read)\" ) ; SSL_set_shutdown ( c -> ssl , SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case SSL_ERROR_ZERO_RETURN : s_log ( LOG_INFO , \"TLS<S2SV_blank>closed<S2SV_blank>(SSL_read)\" ) ; if ( SSL_version ( c -> ssl ) == SSL2_VERSION ) SSL_set_shutdown ( c -> ssl , SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ; break ; case SSL_ERROR_SSL : sslerror ( \"SSL_read\" ) ; throw_exception ( c , 1 ) ; default : s_log ( LOG_ERR , \"SSL_read/SSL_get_error<S2SV_blank>returned<S2SV_blank>%d\" , err ) ; throw_exception ( c , 1 ) ; } } if ( sock_open_rd && s_poll_rdhup ( c -> fds , c -> sock_rfd -> fd ) && ( ioctlsocket ( c -> sock_rfd -> fd , FIONREAD , & bytes ) || ! bytes ) ) { s_log ( LOG_INFO , \"Read<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(read<S2SV_blank>hangup)\" ) ; sock_open_rd = 0 ; } if ( sock_open_wr && s_poll_hup ( c -> fds , c -> sock_wfd -> fd ) ) { if ( c -> ssl_ptr ) { s_log ( LOG_ERR , \"Write<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(write<S2SV_blank>hangup)<S2SV_blank>with<S2SV_blank>%ld<S2SV_blank>unsent<S2SV_blank>byte(s)\" , ( long ) c -> ssl_ptr ) ; throw_exception ( c , 1 ) ; } s_log ( LOG_INFO , \"Write<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(write<S2SV_blank>hangup)\" ) ; sock_open_wr = 0 ; } if ( ! ( SSL_get_shutdown ( c -> ssl ) & SSL_RECEIVED_SHUTDOWN ) && s_poll_rdhup ( c -> fds , c -> ssl_rfd -> fd ) && ( ioctlsocket ( c -> ssl_rfd -> fd , FIONREAD , & bytes ) || ! bytes ) ) { s_log ( LOG_INFO , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(read<S2SV_blank>hangup)\" ) ; SSL_set_shutdown ( c -> ssl , SSL_get_shutdown ( c -> ssl ) | SSL_RECEIVED_SHUTDOWN ) ; } if ( ! ( SSL_get_shutdown ( c -> ssl ) & SSL_SENT_SHUTDOWN ) && s_poll_hup ( c -> fds , c -> ssl_wfd -> fd ) ) { if ( c -> sock_ptr || write_wants_write ) { s_log ( LOG_ERR , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(write<S2SV_blank>hangup)<S2SV_blank>with<S2SV_blank>%ld<S2SV_blank>unsent<S2SV_blank>byte(s)\" , ( long ) c -> sock_ptr ) ; throw_exception ( c , 1 ) ; } s_log ( LOG_INFO , \"TLS<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>(write<S2SV_blank>hangup)\" ) ; SSL_set_shutdown ( c -> ssl , SSL_get_shutdown ( c -> ssl ) | SSL_SENT_SHUTDOWN ) ; } if ( sock_open_wr && SSL_get_shutdown ( c -> ssl ) & SSL_RECEIVED_SHUTDOWN && ! c -> ssl_ptr ) { sock_open_wr = 0 ; if ( ! c -> sock_wfd -> is_socket ) { s_log ( LOG_DEBUG , \"Closing<S2SV_blank>the<S2SV_blank>file<S2SV_blank>descriptor\" ) ; sock_open_rd = 0 ; } else if ( ! shutdown ( c -> sock_wfd -> fd , SHUT_WR ) ) { s_log ( LOG_DEBUG , \"Sent<S2SV_blank>socket<S2SV_blank>write<S2SV_blank>shutdown\" ) ; } else { s_log ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>socket<S2SV_blank>write<S2SV_blank>shutdown\" ) ; sock_open_rd = 0 ; } } if ( ! ( SSL_get_shutdown ( c -> ssl ) & SSL_SENT_SHUTDOWN ) && ! sock_open_rd && ! c -> sock_ptr && ! write_wants_write ) { if ( SSL_version ( c -> ssl ) != SSL2_VERSION ) { s_log ( LOG_DEBUG , \"Sending<S2SV_blank>close_notify<S2SV_blank>alert\" ) ; shutdown_wants_write = 1 ; } else { s_log ( LOG_DEBUG , \"Closing<S2SV_blank>SSLv2<S2SV_blank>socket\" ) ; if ( c -> ssl_rfd -> is_socket ) shutdown ( c -> ssl_rfd -> fd , SHUT_RD ) ; if ( c -> ssl_wfd -> is_socket ) shutdown ( c -> ssl_wfd -> fd , SHUT_WR ) ; SSL_set_shutdown ( c -> ssl , SSL_SENT_SHUTDOWN | SSL_RECEIVED_SHUTDOWN ) ; } } if ( ++ watchdog > 100 ) { s_log ( LOG_ERR , \"transfer()<S2SV_blank>loop<S2SV_blank>executes<S2SV_blank>not<S2SV_blank>transferring<S2SV_blank>any<S2SV_blank>data\" ) ; s_log ( LOG_ERR , \"please<S2SV_blank>report<S2SV_blank>the<S2SV_blank>problem<S2SV_blank>to<S2SV_blank>Michal.Trojnara@stunnel.org\" ) ; stunnel_info ( LOG_ERR ) ; # if OPENSSL_VERSION_NUMBER >= 0x10100000L s_log ( LOG_ERR , \"protocol=%s,<S2SV_blank>SSL_pending=%d,<S2SV_blank>SSL_has_pending=%d\" , SSL_get_version ( c -> ssl ) , SSL_pending ( c -> ssl ) , SSL_has_pending ( c -> ssl ) ) ; # else s_log ( LOG_ERR , \"protocol=%s,<S2SV_blank>SSL_pending=%d\" , SSL_get_version ( c -> ssl ) , SSL_pending ( c -> ssl ) ) ; # endif s_log ( LOG_ERR , \"sock_open_rd=%s,<S2SV_blank>sock_open_wr=%s\" , sock_open_rd ? \"Y\" : \"n\" , sock_open_wr ? \"Y\" : \"n\" ) ; s_log ( LOG_ERR , \"SSL_RECEIVED_SHUTDOWN=%s,<S2SV_blank>SSL_SENT_SHUTDOWN=%s\" , ( SSL_get_shutdown ( c -> ssl ) & SSL_RECEIVED_SHUTDOWN ) ? \"Y\" : \"n\" , ( SSL_get_shutdown ( c -> ssl ) & SSL_SENT_SHUTDOWN ) ? \"Y\" : \"n\" ) ; s_log ( LOG_ERR , \"sock_can_rd=%s,<S2SV_blank>sock_can_wr=%s\" , sock_can_rd ? \"Y\" : \"n\" , sock_can_wr ? \"Y\" : \"n\" ) ; s_log ( LOG_ERR , \"ssl_can_rd=%s,<S2SV_blank>ssl_can_wr=%s\" , ssl_can_rd ? \"Y\" : \"n\" , ssl_can_wr ? \"Y\" : \"n\" ) ; s_log ( LOG_ERR , \"read_wants_read=%s,<S2SV_blank>read_wants_write=%s\" , read_wants_read ? \"Y\" : \"n\" , read_wants_write ? \"Y\" : \"n\" ) ; s_log ( LOG_ERR , \"write_wants_read=%s,<S2SV_blank>write_wants_write=%s\" , write_wants_read ? \"Y\" : \"n\" , write_wants_write ? \"Y\" : \"n\" ) ; s_log ( LOG_ERR , \"shutdown_wants_read=%s,<S2SV_blank>shutdown_wants_write=%s\" , shutdown_wants_read ? \"Y\" : \"n\" , shutdown_wants_write ? \"Y\" : \"n\" ) ; s_log ( LOG_ERR , \"socket<S2SV_blank>input<S2SV_blank>buffer:<S2SV_blank>%ld<S2SV_blank>byte(s),<S2SV_blank>\" \"TLS<S2SV_blank>input<S2SV_blank>buffer:<S2SV_blank>%ld<S2SV_blank>byte(s)\" , ( long ) c -> sock_ptr , ( long ) c -> ssl_ptr ) ; throw_exception ( c , 1 ) ; } } while ( sock_open_wr || ! ( SSL_get_shutdown ( c -> ssl ) & SSL_SENT_SHUTDOWN ) || shutdown_wants_read || shutdown_wants_write ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> watchdog = 0 <S2SV_ModEnd> ; int err <S2SV_ModStart> shutdown_wants_write ) { int <S2SV_ModStart> -> ssl , <S2SV_ModEnd> num ) ; <S2SV_ModStart> break ; case SSL_ERROR_WANT_WRITE : s_log ( LOG_DEBUG , \"SSL_shutdown<S2SV_blank>returned<S2SV_blank>WANT_WRITE:<S2SV_blank>retrying\" ) ; shutdown_wants_read = 0 ; shutdown_wants_write = 1 ; break ; case SSL_ERROR_WANT_READ : s_log ( LOG_DEBUG , \"SSL_shutdown<S2SV_blank>returned<S2SV_blank>WANT_READ:<S2SV_blank>retrying\" ) ; shutdown_wants_read = 1 ; shutdown_wants_write = 0 ; break ; case SSL_ERROR_SSL : sslerror ( \"SSL_shutdown\" ) ; throw_exception ( c , 1 ) ; case SSL_ERROR_ZERO_RETURN : <S2SV_ModEnd> SSL_set_shutdown ( c <S2SV_ModStart> break ; case SSL_ERROR_SYSCALL : if ( parse_socket_error ( c , \"SSL_shutdown\" ) ) break ; <S2SV_ModEnd> SSL_set_shutdown ( c <S2SV_ModStart> ; break ; default : s_log ( LOG_ERR , \"SSL_shutdown/SSL_get_error<S2SV_blank>returned<S2SV_blank>%d\" , err ) ; throw_exception ( c , 1 <S2SV_ModEnd> ) ; } <S2SV_ModStart> sock_can_wr ) { ssize_t <S2SV_ModStart> sock_can_rd ) { ssize_t <S2SV_ModStart> ) ) { int num = SSL_write ( c -> ssl , c -> sock_buff , ( int ) ( c -> sock_ptr ) ) ; <S2SV_ModStart> = 0 ; <S2SV_ModEnd> switch ( err <S2SV_ModStart> -> ssl , <S2SV_ModEnd> num ) ) <S2SV_ModStart> break ; case SSL_ERROR_SSL : sslerror ( \"SSL_write\" ) ; throw_exception ( c , 1 ) ; case SSL_ERROR_ZERO_RETURN : case <S2SV_ModStart> : if ( parse_socket_error ( c , \"SSL_write\" ) && num <S2SV_ModEnd> ) break ; <S2SV_ModStart> ; break ; default : s_log ( LOG_ERR , \"SSL_write/SSL_get_error<S2SV_blank>returned<S2SV_blank>%d\" , err ) ; throw_exception ( c , 1 ) ; } } if ( ( read_wants_read && ( ssl_can_rd || pending ) ) || ( read_wants_write && ssl_can_wr ) ) { int num = SSL_read ( c -> ssl , c -> ssl_buff + c -> ssl_ptr , ( int ) ( BUFFSIZE - c -> ssl_ptr ) ) ; read_wants_read = 0 ; read_wants_write = 0 ; switch ( err = SSL_get_error ( c -> ssl , num ) ) { case SSL_ERROR_NONE : if ( num == 0 ) { s_log ( LOG_DEBUG , \"SSL_read<S2SV_blank>returned<S2SV_blank>0\" ) ; break ; } c -> ssl_ptr += ( size_t ) num ; watchdog = 0 ; break ; case SSL_ERROR_WANT_WRITE : s_log ( LOG_DEBUG , \"SSL_read<S2SV_blank>returned<S2SV_blank>WANT_WRITE:<S2SV_blank>retrying\" ) ; read_wants_write = 1 ; break ; case SSL_ERROR_WANT_READ : # if 0 s_log ( LOG_DEBUG , \"SSL_read<S2SV_blank>returned<S2SV_blank>WANT_READ:<S2SV_blank>retrying\" ) ; # endif read_wants_read = 1 ; break ; case SSL_ERROR_WANT_X509_LOOKUP : s_log ( LOG_DEBUG , \"SSL_read<S2SV_blank>returned<S2SV_blank>WANT_X509_LOOKUP:<S2SV_blank>retrying\" ) ; break ; case SSL_ERROR_SSL : sslerror ( \"SSL_read\" ) ; throw_exception ( c , 1 ) ; <S2SV_ModStart> ( LOG_INFO , \"TLS<S2SV_blank>closed<S2SV_blank>(SSL_read)\" <S2SV_ModEnd> ) ; if <S2SV_ModStart> break ; case SSL_ERROR_SYSCALL : if ( parse_socket_error ( c , \"SSL_read\" ) && num <S2SV_ModEnd> ) break ; <S2SV_ModStart> ) ; break <S2SV_ModEnd> ; default :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19047\n\n```\nCWE-401 static int mlx5_fw_fatal_reporter_dump ( struct devlink_health_reporter * reporter , struct devlink_fmsg * fmsg , void * priv_ctx ) { struct mlx5_core_dev * dev = devlink_health_reporter_priv ( reporter ) ; u32 crdump_size = dev -> priv . health . crdump_size ; u32 * cr_data ; u32 data_size ; u32 offset ; int err ; if ( ! mlx5_core_is_pf ( dev ) ) return - EPERM ; cr_data = kvmalloc ( crdump_size , GFP_KERNEL ) ; if ( ! cr_data ) return - ENOMEM ; err = mlx5_crdump_collect ( dev , cr_data ) ; if ( err ) <S2SV_StartBug> return err ; <S2SV_EndBug> if ( priv_ctx ) { struct mlx5_fw_reporter_ctx * fw_reporter_ctx = priv_ctx ; err = mlx5_fw_reporter_ctx_pairs_put ( fmsg , fw_reporter_ctx ) ; if ( err ) goto free_data ; } err = devlink_fmsg_arr_pair_nest_start ( fmsg , \"crdump_data\" ) ; if ( err ) goto free_data ; for ( offset = 0 ; offset < crdump_size ; offset += data_size ) { if ( crdump_size - offset < MLX5_CR_DUMP_CHUNK_SIZE ) data_size = crdump_size - offset ; else data_size = MLX5_CR_DUMP_CHUNK_SIZE ; err = devlink_fmsg_binary_put ( fmsg , ( char * ) cr_data + offset , data_size ) ; if ( err ) goto free_data ; } err = devlink_fmsg_arr_pair_nest_end ( fmsg ) ; free_data : kvfree ( cr_data ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( err ) goto free_data <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2844\n\n```\nCWE-000 static Browser_Window * window_create ( const char * url ) { Browser_Window * app_data = malloc ( sizeof ( Browser_Window ) ) ; if ( ! app_data ) { info ( \"ERROR:<S2SV_blank>could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>browser<S2SV_blank>window.\\\\n\" ) ; return NULL ; } app_data -> window = elm_win_add ( NULL , \"minibrowser-window\" , ELM_WIN_BASIC ) ; elm_win_title_set ( app_data -> window , APP_NAME ) ; evas_object_smart_callback_add ( app_data -> window , \"delete,request\" , on_window_deletion , & app_data ) ; Evas_Object * bg = elm_bg_add ( app_data -> window ) ; elm_bg_color_set ( bg , 193 , 192 , 191 ) ; evas_object_size_hint_weight_set ( bg , EVAS_HINT_EXPAND , EVAS_HINT_EXPAND ) ; elm_win_resize_object_add ( app_data -> window , bg ) ; evas_object_show ( bg ) ; Evas_Object * vertical_layout = elm_box_add ( app_data -> window ) ; elm_box_padding_set ( vertical_layout , 0 , 2 ) ; evas_object_size_hint_weight_set ( vertical_layout , EVAS_HINT_EXPAND , EVAS_HINT_EXPAND ) ; elm_win_resize_object_add ( app_data -> window , vertical_layout ) ; evas_object_show ( vertical_layout ) ; Evas_Object * horizontal_layout = elm_box_add ( app_data -> window ) ; elm_box_horizontal_set ( horizontal_layout , EINA_TRUE ) ; evas_object_size_hint_weight_set ( horizontal_layout , EVAS_HINT_EXPAND , 0.0 ) ; evas_object_size_hint_align_set ( horizontal_layout , EVAS_HINT_FILL , 0.0 ) ; elm_box_pack_end ( vertical_layout , horizontal_layout ) ; evas_object_show ( horizontal_layout ) ; app_data -> back_button = create_toolbar_button ( app_data -> window , \"arrow_left\" ) ; evas_object_smart_callback_add ( app_data -> back_button , \"clicked\" , on_back_button_clicked , app_data ) ; elm_object_disabled_set ( app_data -> back_button , EINA_TRUE ) ; evas_object_size_hint_weight_set ( app_data -> back_button , 0.0 , EVAS_HINT_EXPAND ) ; evas_object_size_hint_align_set ( app_data -> back_button , 0.0 , 0.5 ) ; elm_box_pack_end ( horizontal_layout , app_data -> back_button ) ; evas_object_show ( app_data -> back_button ) ; app_data -> forward_button = create_toolbar_button ( app_data -> window , \"arrow_right\" ) ; evas_object_smart_callback_add ( app_data -> forward_button , \"clicked\" , on_forward_button_clicked , app_data ) ; elm_object_disabled_set ( app_data -> forward_button , EINA_TRUE ) ; evas_object_size_hint_weight_set ( app_data -> forward_button , 0.0 , EVAS_HINT_EXPAND ) ; evas_object_size_hint_align_set ( app_data -> forward_button , 0.0 , 0.5 ) ; elm_box_pack_end ( horizontal_layout , app_data -> forward_button ) ; evas_object_show ( app_data -> forward_button ) ; app_data -> url_bar = elm_entry_add ( app_data -> window ) ; elm_entry_scrollable_set ( app_data -> url_bar , EINA_TRUE ) ; elm_entry_scrollbar_policy_set ( app_data -> url_bar , ELM_SCROLLER_POLICY_OFF , ELM_SCROLLER_POLICY_OFF ) ; elm_entry_single_line_set ( app_data -> url_bar , EINA_TRUE ) ; elm_entry_cnp_mode_set ( app_data -> url_bar , ELM_CNP_MODE_PLAINTEXT ) ; elm_entry_text_style_user_push ( app_data -> url_bar , \"DEFAULT=\\'font_size=18\\'\" ) ; evas_object_smart_callback_add ( app_data -> url_bar , \"activated\" , on_url_bar_activated , app_data ) ; evas_object_smart_callback_add ( app_data -> url_bar , \"clicked\" , on_url_bar_clicked , app_data ) ; evas_object_size_hint_weight_set ( app_data -> url_bar , EVAS_HINT_EXPAND , EVAS_HINT_EXPAND ) ; evas_object_size_hint_align_set ( app_data -> url_bar , EVAS_HINT_FILL , EVAS_HINT_FILL ) ; elm_box_pack_end ( horizontal_layout , app_data -> url_bar ) ; evas_object_show ( app_data -> url_bar ) ; Evas_Object * refresh_button = create_toolbar_button ( app_data -> window , \"refresh\" ) ; evas_object_smart_callback_add ( refresh_button , \"clicked\" , on_refresh_button_clicked , app_data ) ; evas_object_size_hint_weight_set ( refresh_button , 0.0 , EVAS_HINT_EXPAND ) ; evas_object_size_hint_align_set ( refresh_button , 1.0 , 0.5 ) ; elm_box_pack_end ( horizontal_layout , refresh_button ) ; evas_object_show ( refresh_button ) ; Evas_Object * home_button = create_toolbar_button ( app_data -> window , \"home\" ) ; evas_object_smart_callback_add ( home_button , \"clicked\" , on_home_button_clicked , app_data ) ; evas_object_size_hint_weight_set ( home_button , 0.0 , EVAS_HINT_EXPAND ) ; evas_object_size_hint_align_set ( home_button , 1.0 , 0.5 ) ; elm_box_pack_end ( horizontal_layout , home_button ) ; evas_object_show ( home_button ) ; Ewk_View_Smart_Class * ewkViewClass = miniBrowserViewSmartClass ( ) ; ewkViewClass -> run_javascript_alert = on_javascript_alert ; ewkViewClass -> run_javascript_confirm = on_javascript_confirm ; ewkViewClass -> run_javascript_prompt = on_javascript_prompt ; Evas * evas = evas_object_evas_get ( app_data -> window ) ; Evas_Smart * smart = evas_smart_class_new ( & ewkViewClass -> sc ) ; app_data -> webview = ewk_view_smart_add ( evas , smart , ewk_context_default_get ( ) ) ; ewk_view_theme_set ( app_data -> webview , THEME_DIR \"/default.edj\" ) ; Ewk_Settings * settings = ewk_view_settings_get ( app_data -> webview ) ; ewk_settings_file_access_from_file_urls_allowed_set ( settings , EINA_TRUE ) ; ewk_settings_frame_flattening_enabled_set ( settings , frame_flattening_enabled ) ; ewk_settings_developer_extras_enabled_set ( settings , EINA_TRUE ) ; evas_object_smart_callback_add ( app_data -> webview , \"authentication,request\" , on_authentication_request , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"close,window\" , on_close_window , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"create,window\" , on_new_window , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"download,failed\" , on_download_failed , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"download,finished\" , on_download_finished , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"download,request\" , on_download_request , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"file,chooser,request\" , on_file_chooser_request , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"icon,changed\" , on_view_icon_changed , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"load,error\" , on_error , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"load,progress\" , on_progress , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"title,changed\" , on_title_changed , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"url,changed\" , on_url_changed , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"back,forward,list,changed\" , on_back_forward_list_changed , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"tooltip,text,set\" , on_tooltip_text_set , app_data ) ; evas_object_smart_callback_add ( app_data -> webview , \"tooltip,text,unset\" , on_tooltip_text_unset , app_data ) ; evas_object_event_callback_add ( app_data -> webview , EVAS_CALLBACK_KEY_DOWN , on_key_down , app_data ) ; evas_object_event_callback_add ( app_data -> webview , EVAS_CALLBACK_MOUSE_DOWN , on_mouse_down , app_data ) ; evas_object_size_hint_weight_set ( app_data -> webview , EVAS_HINT_EXPAND , EVAS_HINT_EXPAND ) ; evas_object_size_hint_align_set ( app_data -> webview , EVAS_HINT_FILL , EVAS_HINT_FILL ) ; elm_box_pack_end ( vertical_layout , app_data -> webview ) ; evas_object_show ( app_data -> webview ) ; if ( url ) ewk_view_url_set ( app_data -> webview , url ) ; <S2SV_StartBug> evas_object_resize ( app_data -> window , DEFAULT_WIDTH , DEFAULT_HEIGHT ) ; <S2SV_EndBug> evas_object_show ( app_data -> window ) ; view_focus_set ( app_data , EINA_TRUE ) ; return app_data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> window , window_width , window_height <S2SV_ModEnd> ) ; evas_object_show\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3153\n\n```\nCWE-264 static int futex_requeue ( u32 __user * uaddr1 , unsigned int flags , u32 __user * uaddr2 , int nr_wake , int nr_requeue , u32 * cmpval , int requeue_pi ) { union futex_key key1 = FUTEX_KEY_INIT , key2 = FUTEX_KEY_INIT ; int drop_count = 0 , task_count = 0 , ret ; struct futex_pi_state * pi_state = NULL ; struct futex_hash_bucket * hb1 , * hb2 ; struct futex_q * this , * next ; if ( requeue_pi ) { <S2SV_StartBug> if ( refill_pi_state_cache ( ) ) <S2SV_EndBug> return - ENOMEM ; if ( nr_wake != 1 ) return - EINVAL ; } retry : if ( pi_state != NULL ) { free_pi_state ( pi_state ) ; pi_state = NULL ; } ret = get_futex_key ( uaddr1 , flags & FLAGS_SHARED , & key1 , VERIFY_READ ) ; if ( unlikely ( ret != 0 ) ) goto out ; ret = get_futex_key ( uaddr2 , flags & FLAGS_SHARED , & key2 , requeue_pi ? VERIFY_WRITE : VERIFY_READ ) ; if ( unlikely ( ret != 0 ) ) <S2SV_StartBug> goto out_put_key1 ; <S2SV_EndBug> hb1 = hash_futex ( & key1 ) ; hb2 = hash_futex ( & key2 ) ; retry_private : hb_waiters_inc ( hb2 ) ; double_lock_hb ( hb1 , hb2 ) ; if ( likely ( cmpval != NULL ) ) { u32 curval ; ret = get_futex_value_locked ( & curval , uaddr1 ) ; if ( unlikely ( ret ) ) { double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; ret = get_user ( curval , uaddr1 ) ; if ( ret ) goto out_put_keys ; if ( ! ( flags & FLAGS_SHARED ) ) goto retry_private ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; goto retry ; } if ( curval != * cmpval ) { ret = - EAGAIN ; goto out_unlock ; } } if ( requeue_pi && ( task_count - nr_wake < nr_requeue ) ) { ret = futex_proxy_trylock_atomic ( uaddr2 , hb1 , hb2 , & key1 , & key2 , & pi_state , nr_requeue ) ; if ( ret > 0 ) { WARN_ON ( pi_state ) ; drop_count ++ ; task_count ++ ; ret = lookup_pi_state ( ret , hb2 , & key2 , & pi_state , NULL ) ; } switch ( ret ) { case 0 : break ; case - EFAULT : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; ret = fault_in_user_writeable ( uaddr2 ) ; if ( ! ret ) goto retry ; goto out ; case - EAGAIN : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; cond_resched ( ) ; goto retry ; default : goto out_unlock ; } } plist_for_each_entry_safe ( this , next , & hb1 -> chain , list ) { if ( task_count - nr_wake >= nr_requeue ) break ; if ( ! match_futex ( & this -> key , & key1 ) ) continue ; if ( ( requeue_pi && ! this -> rt_waiter ) || ( ! requeue_pi && this -> rt_waiter ) || this -> pi_state ) { ret = - EINVAL ; break ; } if ( ++ task_count <= nr_wake && ! requeue_pi ) { wake_futex ( this ) ; continue ; } if ( requeue_pi && ! match_futex ( this -> requeue_pi_key , & key2 ) ) { ret = - EINVAL ; break ; } if ( requeue_pi ) { atomic_inc ( & pi_state -> refcount ) ; this -> pi_state = pi_state ; ret = rt_mutex_start_proxy_lock ( & pi_state -> pi_mutex , this -> rt_waiter , this -> task , 1 ) ; if ( ret == 1 ) { requeue_pi_wake_futex ( this , & key2 , hb2 ) ; drop_count ++ ; continue ; } else if ( ret ) { this -> pi_state = NULL ; free_pi_state ( pi_state ) ; goto out_unlock ; } } requeue_futex ( this , hb1 , hb2 , & key2 ) ; drop_count ++ ; } out_unlock : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; while ( -- drop_count >= 0 ) drop_futex_key_refs ( & key1 ) ; out_put_keys : put_futex_key ( & key2 ) ; out_put_key1 : put_futex_key ( & key1 ) ; out : if ( pi_state != NULL ) free_pi_state ( pi_state ) ; return ret ? ret : task_count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( uaddr1 == uaddr2 ) return - EINVAL ; if ( <S2SV_ModStart> goto out_put_key1 ; if ( requeue_pi && match_futex ( & key1 , & key2 ) ) { ret = - EINVAL ; goto out_put_keys ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3673\n\n```\nCWE-399 struct sctp_chunk * sctp_process_asconf ( struct sctp_association * asoc , struct sctp_chunk * asconf ) { <S2SV_StartBug> sctp_addiphdr_t * hdr ; <S2SV_EndBug> union sctp_addr_param * addr_param ; sctp_addip_param_t * asconf_param ; struct sctp_chunk * asconf_ack ; __be16 err_code ; int length = 0 ; int chunk_len ; __u32 serial ; <S2SV_StartBug> int all_param_pass = 1 ; <S2SV_EndBug> chunk_len = ntohs ( asconf -> chunk_hdr -> length ) - sizeof ( sctp_chunkhdr_t ) ; hdr = ( sctp_addiphdr_t * ) asconf -> skb -> data ; serial = ntohl ( hdr -> serial ) ; length = sizeof ( sctp_addiphdr_t ) ; addr_param = ( union sctp_addr_param * ) ( asconf -> skb -> data + length ) ; chunk_len -= length ; length = ntohs ( addr_param -> p . length ) ; asconf_param = ( void * ) addr_param + length ; chunk_len -= length ; asconf_ack = sctp_make_asconf_ack ( asoc , serial , chunk_len * 4 ) ; if ( ! asconf_ack ) goto done ; <S2SV_StartBug> while ( chunk_len > 0 ) { <S2SV_EndBug> err_code = sctp_process_asconf_param ( asoc , asconf , <S2SV_StartBug> asconf_param ) ; <S2SV_EndBug> if ( SCTP_ERROR_NO_ERROR != err_code ) <S2SV_StartBug> all_param_pass = 0 ; <S2SV_EndBug> if ( ! all_param_pass ) sctp_add_asconf_response ( asconf_ack , <S2SV_StartBug> asconf_param -> crr_id , err_code , <S2SV_EndBug> asconf_param ) ; if ( SCTP_ERROR_RSRC_LOW == err_code ) goto done ; <S2SV_StartBug> length = ntohs ( asconf_param -> param_hdr . length ) ; <S2SV_EndBug> asconf_param = ( void * ) asconf_param + length ; chunk_len -= length ; } done : asoc -> peer . addip_serial ++ ; if ( asconf_ack ) { sctp_chunk_hold ( asconf_ack ) ; list_add_tail ( & asconf_ack -> transmitted_list , & asoc -> asconf_ack_list ) ; } return asconf_ack ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> asconf ) { sctp_addip_chunk_t * addip = ( sctp_addip_chunk_t * ) asconf -> chunk_hdr ; bool all_param_pass = true ; union sctp_params param ; <S2SV_ModStart> __u32 serial ; <S2SV_ModEnd> chunk_len = ntohs <S2SV_ModStart> goto done ; sctp_walk_params ( param , addip , addip_hdr . params ) { if ( param . p -> type == SCTP_PARAM_IPV4_ADDRESS || param . p -> type == SCTP_PARAM_IPV6_ADDRESS ) continue ; <S2SV_ModEnd> err_code = sctp_process_asconf_param <S2SV_ModStart> , asconf , param . addip ) ; if ( err_code != SCTP_ERROR_NO_ERROR <S2SV_ModEnd> ) all_param_pass = <S2SV_ModStart> ) all_param_pass = false <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( asconf_ack , param . addip <S2SV_ModEnd> -> crr_id , <S2SV_ModStart> -> crr_id , err_code , param . addip ) ; if ( err_code == SCTP_ERROR_RSRC_LOW <S2SV_ModEnd> ) goto done <S2SV_ModStart> goto done ; <S2SV_ModEnd> } done :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2304\n\n```\nCWE-22 int main ( int argc , char * argv [ ] ) { static char buff [ 16384 ] ; struct cpio _cpio ; struct cpio * cpio ; const char * errmsg ; int uid , gid ; int opt ; cpio = & _cpio ; memset ( cpio , 0 , sizeof ( * cpio ) ) ; cpio -> buff = buff ; cpio -> buff_size = sizeof ( buff ) ; # if defined ( HAVE_SIGACTION ) && defined ( SIGPIPE ) { struct sigaction sa ; sigemptyset ( & sa . sa_mask ) ; sa . sa_flags = 0 ; sa . sa_handler = SIG_IGN ; sigaction ( SIGPIPE , & sa , NULL ) ; } # endif lafe_setprogname ( * argv , \"bsdcpio\" ) ; # if HAVE_SETLOCALE if ( setlocale ( LC_ALL , \"\" ) == NULL ) lafe_warnc ( 0 , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>default<S2SV_blank>locale\" ) ; # endif cpio -> uid_override = - 1 ; cpio -> gid_override = - 1 ; cpio -> argv = argv ; cpio -> argc = argc ; cpio -> mode = '\\\\0' ; cpio -> verbose = 0 ; cpio -> compress = '\\\\0' ; cpio -> extract_flags = ARCHIVE_EXTRACT_NO_AUTODIR ; cpio -> extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER ; cpio -> extract_flags |= ARCHIVE_EXTRACT_SECURE_SYMLINKS ; cpio -> extract_flags |= ARCHIVE_EXTRACT_SECURE_NODOTDOT ; <S2SV_StartBug> cpio -> extract_flags |= ARCHIVE_EXTRACT_PERM ; <S2SV_EndBug> cpio -> extract_flags |= ARCHIVE_EXTRACT_FFLAGS ; cpio -> extract_flags |= ARCHIVE_EXTRACT_ACL ; # if ! defined ( _WIN32 ) && ! defined ( __CYGWIN__ ) if ( geteuid ( ) == 0 ) cpio -> extract_flags |= ARCHIVE_EXTRACT_OWNER ; # endif cpio -> bytes_per_block = 512 ; cpio -> filename = NULL ; cpio -> matching = archive_match_new ( ) ; if ( cpio -> matching == NULL ) lafe_errc ( 1 , 0 , \"Out<S2SV_blank>of<S2SV_blank>memory\" ) ; while ( ( opt = cpio_getopt ( cpio ) ) != - 1 ) { switch ( opt ) { case '0' : cpio -> option_null = 1 ; break ; case 'A' : cpio -> option_append = 1 ; break ; case 'a' : cpio -> option_atime_restore = 1 ; break ; case 'B' : cpio -> bytes_per_block = 5120 ; break ; case OPTION_B64ENCODE : cpio -> add_filter = opt ; break ; case 'C' : cpio -> bytes_per_block = atoi ( cpio -> argument ) ; if ( cpio -> bytes_per_block <= 0 ) lafe_errc ( 1 , 0 , \"Invalid<S2SV_blank>blocksize<S2SV_blank>%s\" , cpio -> argument ) ; break ; case 'c' : cpio -> format = \"odc\" ; break ; case 'd' : cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_NO_AUTODIR ; break ; case 'E' : if ( archive_match_include_pattern_from_file ( cpio -> matching , cpio -> argument , cpio -> option_null ) != ARCHIVE_OK ) lafe_errc ( 1 , 0 , \"Error<S2SV_blank>:<S2SV_blank>%s\" , archive_error_string ( cpio -> matching ) ) ; break ; case 'F' : cpio -> filename = cpio -> argument ; break ; case 'f' : if ( archive_match_exclude_pattern ( cpio -> matching , cpio -> argument ) != ARCHIVE_OK ) lafe_errc ( 1 , 0 , \"Error<S2SV_blank>:<S2SV_blank>%s\" , archive_error_string ( cpio -> matching ) ) ; break ; case OPTION_GRZIP : cpio -> compress = opt ; break ; case 'H' : cpio -> format = cpio -> argument ; break ; case 'h' : long_help ( ) ; break ; case 'I' : cpio -> filename = cpio -> argument ; break ; case 'i' : if ( cpio -> mode != '\\\\0' ) lafe_errc ( 1 , 0 , \"Cannot<S2SV_blank>use<S2SV_blank>both<S2SV_blank>-i<S2SV_blank>and<S2SV_blank>-%c\" , cpio -> mode ) ; cpio -> mode = opt ; break ; case 'J' : cpio -> compress = opt ; break ; case 'j' : cpio -> compress = opt ; break ; case OPTION_INSECURE : cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_SECURE_SYMLINKS ; <S2SV_StartBug> cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_SECURE_NODOTDOT ; <S2SV_EndBug> break ; case 'L' : cpio -> option_follow_links = 1 ; break ; case 'l' : cpio -> option_link = 1 ; break ; case OPTION_LRZIP : case OPTION_LZ4 : case OPTION_LZMA : case OPTION_LZOP : cpio -> compress = opt ; break ; case 'm' : cpio -> extract_flags |= ARCHIVE_EXTRACT_TIME ; break ; case 'n' : cpio -> option_numeric_uid_gid = 1 ; break ; case OPTION_NO_PRESERVE_OWNER : cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_OWNER ; break ; case 'O' : cpio -> filename = cpio -> argument ; break ; case 'o' : if ( cpio -> mode != '\\\\0' ) lafe_errc ( 1 , 0 , \"Cannot<S2SV_blank>use<S2SV_blank>both<S2SV_blank>-o<S2SV_blank>and<S2SV_blank>-%c\" , cpio -> mode ) ; cpio -> mode = opt ; break ; case 'p' : if ( cpio -> mode != '\\\\0' ) lafe_errc ( 1 , 0 , \"Cannot<S2SV_blank>use<S2SV_blank>both<S2SV_blank>-p<S2SV_blank>and<S2SV_blank>-%c\" , cpio -> mode ) ; cpio -> mode = opt ; cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_SECURE_NODOTDOT ; break ; case OPTION_PASSPHRASE : cpio -> passphrase = cpio -> argument ; break ; case OPTION_PRESERVE_OWNER : cpio -> extract_flags |= ARCHIVE_EXTRACT_OWNER ; break ; case OPTION_QUIET : cpio -> quiet = 1 ; break ; case 'R' : errmsg = owner_parse ( cpio -> argument , & uid , & gid ) ; if ( errmsg ) { lafe_warnc ( - 1 , \"%s\" , errmsg ) ; usage ( ) ; } if ( uid != - 1 ) { cpio -> uid_override = uid ; cpio -> uname_override = NULL ; } if ( gid != - 1 ) { cpio -> gid_override = gid ; cpio -> gname_override = NULL ; } break ; case 'r' : cpio -> option_rename = 1 ; break ; case 't' : cpio -> option_list = 1 ; break ; case 'u' : cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER ; break ; case OPTION_UUENCODE : cpio -> add_filter = opt ; break ; case 'v' : cpio -> verbose ++ ; break ; case 'V' : cpio -> dot ++ ; break ; case OPTION_VERSION : version ( ) ; break ; # if 0 case 'W' : break ; # endif case 'y' : cpio -> compress = opt ; break ; case 'Z' : cpio -> compress = opt ; break ; case 'z' : cpio -> compress = opt ; break ; default : usage ( ) ; } } if ( cpio -> option_list && cpio -> mode == '\\\\0' ) cpio -> mode = 'i' ; if ( cpio -> option_list && cpio -> mode != 'i' ) lafe_errc ( 1 , 0 , \"Option<S2SV_blank>-t<S2SV_blank>requires<S2SV_blank>-i\" ) ; if ( cpio -> option_numeric_uid_gid && ! cpio -> option_list ) lafe_errc ( 1 , 0 , \"Option<S2SV_blank>-n<S2SV_blank>requires<S2SV_blank>-it\" ) ; if ( cpio -> format != NULL && cpio -> mode != 'o' ) lafe_errc ( 1 , 0 , \"Option<S2SV_blank>--format<S2SV_blank>requires<S2SV_blank>-o\" ) ; if ( cpio -> option_link && cpio -> mode != 'p' ) lafe_errc ( 1 , 0 , \"Option<S2SV_blank>-l<S2SV_blank>requires<S2SV_blank>-p\" ) ; if ( cpio -> dot && cpio -> verbose ) cpio -> dot = 0 ; switch ( cpio -> mode ) { case 'o' : if ( cpio -> format == NULL ) cpio -> format = \"odc\" ; mode_out ( cpio ) ; break ; case 'i' : while ( * cpio -> argv != NULL ) { if ( archive_match_include_pattern ( cpio -> matching , * cpio -> argv ) != ARCHIVE_OK ) lafe_errc ( 1 , 0 , \"Error<S2SV_blank>:<S2SV_blank>%s\" , archive_error_string ( cpio -> matching ) ) ; -- cpio -> argc ; ++ cpio -> argv ; } if ( cpio -> option_list ) mode_list ( cpio ) ; else mode_in ( cpio ) ; break ; case 'p' : if ( * cpio -> argv == NULL || * * cpio -> argv == '\\\\0' ) lafe_errc ( 1 , 0 , \"-p<S2SV_blank>mode<S2SV_blank>requires<S2SV_blank>a<S2SV_blank>target<S2SV_blank>directory\" ) ; mode_pass ( cpio , * cpio -> argv ) ; break ; default : lafe_errc ( 1 , 0 , \"Must<S2SV_blank>specify<S2SV_blank>at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>of<S2SV_blank>-i,<S2SV_blank>-o,<S2SV_blank>or<S2SV_blank>-p\" ) ; } archive_match_free ( cpio -> matching ) ; free_cache ( cpio -> gname_cache ) ; free_cache ( cpio -> uname_cache ) ; free ( cpio -> destdir ) ; passphrase_free ( cpio -> ppbuff ) ; return ( cpio -> return_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> extract_flags |= ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS ; cpio -> extract_flags |= <S2SV_ModStart> &= ~ ARCHIVE_EXTRACT_SECURE_NODOTDOT ; cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int tok_get ( struct tok_state * tok , char * * p_start , char * * p_end ) { int c ; int blankline , nonascii ; * p_start = * p_end = NULL ; nextline : tok -> start = NULL ; blankline = 0 ; if ( tok -> atbol ) { int col = 0 ; int altcol = 0 ; tok -> atbol = 0 ; for ( ; ; ) { c = tok_nextc ( tok ) ; if ( c == '<S2SV_blank>' ) { col ++ , altcol ++ ; } else if ( c == '\\\\t' ) { col = ( col / tok -> tabsize + 1 ) * tok -> tabsize ; altcol = ( altcol / ALTTABSIZE + 1 ) * ALTTABSIZE ; } else if ( c == '\\\\014' ) { col = altcol = 0 ; } else { break ; } } tok_backup ( tok , c ) ; if ( c == '#' || c == '\\\\n' ) { if ( col == 0 && c == '\\\\n' && tok -> prompt != NULL ) { blankline = 0 ; } else { blankline = 1 ; } } if ( ! blankline && tok -> level == 0 ) { if ( col == tok -> indstack [ tok -> indent ] ) { if ( altcol != tok -> altindstack [ tok -> indent ] ) { return indenterror ( tok ) ; } } else if ( col > tok -> indstack [ tok -> indent ] ) { if ( tok -> indent + 1 >= MAXINDENT ) { tok -> done = E_TOODEEP ; tok -> cur = tok -> inp ; return ERRORTOKEN ; } if ( altcol <= tok -> altindstack [ tok -> indent ] ) { return indenterror ( tok ) ; } tok -> pendin ++ ; tok -> indstack [ ++ tok -> indent ] = col ; tok -> altindstack [ tok -> indent ] = altcol ; } else { while ( tok -> indent > 0 && col < tok -> indstack [ tok -> indent ] ) { tok -> pendin -- ; tok -> indent -- ; } if ( col != tok -> indstack [ tok -> indent ] ) { tok -> done = E_DEDENT ; tok -> cur = tok -> inp ; return ERRORTOKEN ; } if ( altcol != tok -> altindstack [ tok -> indent ] ) { return indenterror ( tok ) ; } } } } tok -> start = tok -> cur ; if ( tok -> pendin != 0 ) { if ( tok -> pendin < 0 ) { tok -> pendin ++ ; return DEDENT ; } else { tok -> pendin -- ; return INDENT ; } } again : tok -> start = NULL ; do { c = tok_nextc ( tok ) ; } while ( c == '<S2SV_blank>' || c == '\\\\t' || c == '\\\\014' ) ; tok -> start = tok -> cur - 1 ; if ( c == '#' ) { <S2SV_StartBug> while ( c != EOF && c != '\\\\n' ) { <S2SV_EndBug> <S2SV_StartBug> c = tok_nextc ( tok ) ; <S2SV_EndBug> } } if ( c == EOF ) { return tok -> done == E_EOF ? ENDMARKER : ERRORTOKEN ; } nonascii = 0 ; if ( is_potential_identifier_start ( c ) ) { int saw_b = 0 , saw_r = 0 , saw_u = 0 , saw_f = 0 ; while ( 1 ) { if ( ! ( saw_b || saw_u || saw_f ) && ( c == 'b' || c == 'B' ) ) saw_b = 1 ; else if ( ! ( saw_b || saw_u || saw_r || saw_f ) && ( c == 'u' || c == 'U' ) ) { saw_u = 1 ; } else if ( ! ( saw_r || saw_u ) && ( c == 'r' || c == 'R' ) ) { saw_r = 1 ; } else if ( ! ( saw_f || saw_b || saw_u ) && ( c == 'f' || c == 'F' ) ) { saw_f = 1 ; } else { break ; } c = tok_nextc ( tok ) ; if ( c == \\'\"\\' || c == '\\\\'' ) { goto letter_quote ; } } while ( is_potential_identifier_char ( c ) ) { if ( c >= 128 ) { nonascii = 1 ; } c = tok_nextc ( tok ) ; } tok_backup ( tok , c ) ; if ( nonascii && ! verify_identifier ( tok ) ) { return ERRORTOKEN ; } * p_start = tok -> start ; * p_end = tok -> cur ; return NAME ; } if ( c == '\\\\n' ) { tok -> atbol = 1 ; if ( blankline || tok -> level > 0 ) { goto nextline ; } * p_start = tok -> start ; * p_end = tok -> cur - 1 ; tok -> cont_line = 0 ; return NEWLINE ; } if ( c == '.' ) { c = tok_nextc ( tok ) ; if ( isdigit ( c ) ) { goto fraction ; } else if ( c == '.' ) { c = tok_nextc ( tok ) ; if ( c == '.' ) { * p_start = tok -> start ; * p_end = tok -> cur ; return ELLIPSIS ; } else { tok_backup ( tok , c ) ; } tok_backup ( tok , '.' ) ; } else { tok_backup ( tok , c ) ; } * p_start = tok -> start ; * p_end = tok -> cur ; return DOT ; } if ( isdigit ( c ) ) { if ( c == '0' ) { c = tok_nextc ( tok ) ; if ( c == 'x' || c == 'X' ) { c = tok_nextc ( tok ) ; do { if ( c == '_' ) { c = tok_nextc ( tok ) ; } if ( ! isxdigit ( c ) ) { tok_backup ( tok , c ) ; return syntaxerror ( tok , \"invalid<S2SV_blank>hexadecimal<S2SV_blank>literal\" ) ; } do { c = tok_nextc ( tok ) ; } while ( isxdigit ( c ) ) ; } while ( c == '_' ) ; } else if ( c == 'o' || c == 'O' ) { c = tok_nextc ( tok ) ; do { if ( c == '_' ) { c = tok_nextc ( tok ) ; } if ( c < '0' || c >= '8' ) { tok_backup ( tok , c ) ; if ( isdigit ( c ) ) { return syntaxerror ( tok , \"invalid<S2SV_blank>digit<S2SV_blank>\\'%c\\'<S2SV_blank>in<S2SV_blank>octal<S2SV_blank>literal\" , c ) ; } else { return syntaxerror ( tok , \"invalid<S2SV_blank>octal<S2SV_blank>literal\" ) ; } } do { c = tok_nextc ( tok ) ; } while ( '0' <= c && c < '8' ) ; } while ( c == '_' ) ; if ( isdigit ( c ) ) { return syntaxerror ( tok , \"invalid<S2SV_blank>digit<S2SV_blank>\\'%c\\'<S2SV_blank>in<S2SV_blank>octal<S2SV_blank>literal\" , c ) ; } } else if ( c == 'b' || c == 'B' ) { c = tok_nextc ( tok ) ; do { if ( c == '_' ) { c = tok_nextc ( tok ) ; } if ( c != '0' && c != '1' ) { tok_backup ( tok , c ) ; if ( isdigit ( c ) ) { return syntaxerror ( tok , \"invalid<S2SV_blank>digit<S2SV_blank>\\'%c\\'<S2SV_blank>in<S2SV_blank>binary<S2SV_blank>literal\" , c ) ; } else { return syntaxerror ( tok , \"invalid<S2SV_blank>binary<S2SV_blank>literal\" ) ; } } do { c = tok_nextc ( tok ) ; } while ( c == '0' || c == '1' ) ; } while ( c == '_' ) ; if ( isdigit ( c ) ) { return syntaxerror ( tok , \"invalid<S2SV_blank>digit<S2SV_blank>\\'%c\\'<S2SV_blank>in<S2SV_blank>binary<S2SV_blank>literal\" , c ) ; } } else { int nonzero = 0 ; while ( 1 ) { if ( c == '_' ) { c = tok_nextc ( tok ) ; if ( ! isdigit ( c ) ) { tok_backup ( tok , c ) ; return syntaxerror ( tok , \"invalid<S2SV_blank>decimal<S2SV_blank>literal\" ) ; } } if ( c != '0' ) { break ; } c = tok_nextc ( tok ) ; } if ( isdigit ( c ) ) { nonzero = 1 ; c = tok_decimal_tail ( tok ) ; if ( c == 0 ) { return ERRORTOKEN ; } } if ( c == '.' ) { c = tok_nextc ( tok ) ; goto fraction ; } else if ( c == 'e' || c == 'E' ) { goto exponent ; } else if ( c == 'j' || c == 'J' ) { goto imaginary ; } else if ( nonzero ) { tok_backup ( tok , c ) ; return syntaxerror ( tok , \"leading<S2SV_blank>zeros<S2SV_blank>in<S2SV_blank>decimal<S2SV_blank>integer<S2SV_blank>\" \"literals<S2SV_blank>are<S2SV_blank>not<S2SV_blank>permitted;<S2SV_blank>\" \"use<S2SV_blank>an<S2SV_blank>0o<S2SV_blank>prefix<S2SV_blank>for<S2SV_blank>octal<S2SV_blank>integers\" ) ; } } } else { c = tok_decimal_tail ( tok ) ; if ( c == 0 ) { return ERRORTOKEN ; } { if ( c == '.' ) { c = tok_nextc ( tok ) ; fraction : if ( isdigit ( c ) ) { c = tok_decimal_tail ( tok ) ; if ( c == 0 ) { return ERRORTOKEN ; } } } if ( c == 'e' || c == 'E' ) { int e ; exponent : e = c ; c = tok_nextc ( tok ) ; if ( c == '+' || c == '-' ) { c = tok_nextc ( tok ) ; if ( ! isdigit ( c ) ) { tok_backup ( tok , c ) ; return syntaxerror ( tok , \"invalid<S2SV_blank>decimal<S2SV_blank>literal\" ) ; } } else if ( ! isdigit ( c ) ) { tok_backup ( tok , c ) ; tok_backup ( tok , e ) ; * p_start = tok -> start ; * p_end = tok -> cur ; return NUMBER ; } c = tok_decimal_tail ( tok ) ; if ( c == 0 ) { return ERRORTOKEN ; } } if ( c == 'j' || c == 'J' ) { imaginary : c = tok_nextc ( tok ) ; } } } tok_backup ( tok , c ) ; * p_start = tok -> start ; * p_end = tok -> cur ; return NUMBER ; } letter_quote : if ( c == '\\\\'' || c == \\'\"\\' ) { int quote = c ; int quote_size = 1 ; int end_quote_size = 0 ; tok -> first_lineno = tok -> lineno ; tok -> multi_line_start = tok -> line_start ; c = tok_nextc ( tok ) ; if ( c == quote ) { c = tok_nextc ( tok ) ; if ( c == quote ) { quote_size = 3 ; } else { end_quote_size = 1 ; } } if ( c != quote ) { tok_backup ( tok , c ) ; } while ( end_quote_size != quote_size ) { c = tok_nextc ( tok ) ; if ( c == EOF ) { if ( quote_size == 3 ) { tok -> done = E_EOFS ; } else { tok -> done = E_EOLS ; } tok -> cur = tok -> inp ; return ERRORTOKEN ; } if ( quote_size == 1 && c == '\\\\n' ) { tok -> done = E_EOLS ; tok -> cur = tok -> inp ; return ERRORTOKEN ; } if ( c == quote ) { end_quote_size += 1 ; } else { end_quote_size = 0 ; if ( c == '\\\\\\\\' ) { tok_nextc ( tok ) ; } } } * p_start = tok -> start ; * p_end = tok -> cur ; return STRING ; } if ( c == '\\\\\\\\' ) { c = tok_nextc ( tok ) ; if ( c != '\\\\n' ) { tok -> done = E_LINECONT ; tok -> cur = tok -> inp ; return ERRORTOKEN ; } tok -> cont_line = 1 ; goto again ; } { int c2 = tok_nextc ( tok ) ; int token = PyToken_TwoChars ( c , c2 ) ; if ( token != OP ) { int c3 = tok_nextc ( tok ) ; int token3 = PyToken_ThreeChars ( c , c2 , c3 ) ; if ( token3 != OP ) { token = token3 ; } else { tok_backup ( tok , c3 ) ; } * p_start = tok -> start ; * p_end = tok -> cur ; return token ; } tok_backup ( tok , c2 ) ; } switch ( c ) { case '(' : case '[' : case '{' : # ifndef PGEN if ( tok -> level >= MAXLEVEL ) { return syntaxerror ( tok , \"too<S2SV_blank>many<S2SV_blank>nested<S2SV_blank>parentheses\" ) ; } tok -> parenstack [ tok -> level ] = c ; tok -> parenlinenostack [ tok -> level ] = tok -> lineno ; # endif tok -> level ++ ; break ; case ')' : case ']' : case '}' : # ifndef PGEN if ( ! tok -> level ) { return syntaxerror ( tok , \"unmatched<S2SV_blank>\\'%c\\'\" , c ) ; } # endif tok -> level -- ; # ifndef PGEN int opening = tok -> parenstack [ tok -> level ] ; if ( ! ( ( opening == '(' && c == ')' ) || ( opening == '[' && c == ']' ) || ( opening == '{' && c == '}' ) ) ) { if ( tok -> parenlinenostack [ tok -> level ] != tok -> lineno ) { return syntaxerror ( tok , \"closing<S2SV_blank>parenthesis<S2SV_blank>\\'%c\\'<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>\" \"opening<S2SV_blank>parenthesis<S2SV_blank>\\'%c\\'<S2SV_blank>on<S2SV_blank>line<S2SV_blank>%d\" , c , opening , tok -> parenlinenostack [ tok -> level ] ) ; } else { return syntaxerror ( tok , \"closing<S2SV_blank>parenthesis<S2SV_blank>\\'%c\\'<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>\" \"opening<S2SV_blank>parenthesis<S2SV_blank>\\'%c\\'\" , c , opening ) ; } } # endif break ; } * p_start = tok -> start ; * p_end = tok -> cur ; return PyToken_OneChar ( c ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> '#' ) { const char * prefix , * p , * type_start ; <S2SV_ModStart> tok ) ; } if ( tok -> type_comments ) { p = tok -> start ; prefix = type_comment_prefix ; while ( * prefix && p < tok -> cur ) { if ( * prefix == '<S2SV_blank>' ) { while ( * p == '<S2SV_blank>' || * p == '\\\\t' ) { p ++ ; } } else if ( * prefix == * p ) { p ++ ; } else { break ; } prefix ++ ; } if ( ! * prefix ) { int is_type_ignore = 1 ; tok_backup ( tok , c ) ; type_start = p ; is_type_ignore = tok -> cur >= p + 6 && memcmp ( p , \"ignore\" , 6 ) == 0 ; p += 6 ; while ( is_type_ignore && p < tok -> cur ) { if ( * p == '#' ) break ; is_type_ignore = is_type_ignore && ( * p == '<S2SV_blank>' || * p == '\\\\t' ) ; p ++ ; } if ( is_type_ignore ) { if ( blankline ) { tok_nextc ( tok ) ; tok -> atbol = 1 ; } return TYPE_IGNORE ; } else { * p_start = ( char * ) type_start ; * p_end = tok -> cur ; return TYPE_COMMENT ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_restore_layer_context ( VP9_COMP * const cpi ) { <S2SV_StartBug> LAYER_CONTEXT * const lc = get_layer_context ( & cpi -> svc ) ; <S2SV_EndBug> const int old_frame_since_key = cpi -> rc . frames_since_key ; const int old_frame_to_key = cpi -> rc . frames_to_key ; cpi -> rc = lc -> rc ; cpi -> twopass = lc -> twopass ; cpi -> oxcf . target_bandwidth = lc -> target_bandwidth ; <S2SV_StartBug> cpi -> oxcf . starting_buffer_level = lc -> starting_buffer_level ; <S2SV_EndBug> cpi -> oxcf . optimal_buffer_level = lc -> optimal_buffer_level ; cpi -> oxcf . maximum_buffer_size = lc -> maximum_buffer_size ; cpi -> output_framerate = lc -> framerate ; if ( cpi -> svc . number_temporal_layers > 1 ) { cpi -> rc . frames_since_key = old_frame_since_key ; cpi -> rc . frames_to_key = old_frame_to_key ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = get_layer_context ( cpi <S2SV_ModEnd> ) ; const <S2SV_ModStart> ; cpi -> alt_ref_source <S2SV_ModEnd> = lc -> <S2SV_ModStart> = lc -> alt_ref_source <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void ksz8851EventHandler ( NetInterface * interface ) { uint16_t status ; uint_t frameCount ; <S2SV_StartBug> status = ksz8851ReadReg ( interface , KSZ8851_REG_ISR ) ; <S2SV_EndBug> if ( ( status & ISR_LCIS ) != 0 ) { <S2SV_StartBug> ksz8851WriteReg ( interface , KSZ8851_REG_ISR , ISR_LCIS ) ; <S2SV_EndBug> <S2SV_StartBug> status = ksz8851ReadReg ( interface , KSZ8851_REG_P1SR ) ; <S2SV_EndBug> if ( ( status & P1SR_LINK_GOOD ) != 0 ) { if ( ( status & P1SR_OPERATION_SPEED ) != 0 ) { interface -> linkSpeed = NIC_LINK_SPEED_100MBPS ; } else { interface -> linkSpeed = NIC_LINK_SPEED_10MBPS ; } <S2SV_StartBug> if ( ( status & P1SR_OPERATION_DUPLEX ) != 0 ) <S2SV_EndBug> { interface -> duplexMode = NIC_FULL_DUPLEX_MODE ; } else { interface -> duplexMode = NIC_HALF_DUPLEX_MODE ; } interface -> linkState = TRUE ; } else { interface -> linkState = FALSE ; } nicNotifyLinkChange ( interface ) ; } <S2SV_StartBug> if ( ( status & ISR_RXIS ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> ksz8851WriteReg ( interface , KSZ8851_REG_ISR , ISR_RXIS ) ; <S2SV_EndBug> <S2SV_StartBug> frameCount = MSB ( ksz8851ReadReg ( interface , KSZ8851_REG_RXFCTR ) ) ; <S2SV_EndBug> while ( frameCount > 0 ) { ksz8851ReceivePacket ( interface ) ; frameCount -- ; } } <S2SV_StartBug> ksz8851SetBit ( interface , KSZ8851_REG_IER , IER_LCIE | IER_RXIE ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , KSZ8851_ISR ) ; if ( ( status & KSZ8851_ISR_LCIS <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , KSZ8851_ISR , KSZ8851_ISR_LCIS <S2SV_ModEnd> ) ; status <S2SV_ModStart> ( interface , KSZ8851_P1SR ) ; if ( ( status & KSZ8851_P1SR_LINK_GOOD ) != 0 ) { if ( ( status & KSZ8851_P1SR_OPERATION_SPEED <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( status & KSZ8851_P1SR_OPERATION_DUPLEX <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( status & KSZ8851_ISR_RXIS <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , KSZ8851_ISR , KSZ8851_ISR_RXIS <S2SV_ModEnd> ) ; frameCount <S2SV_ModStart> ( interface , KSZ8851_RXFCTR <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , KSZ8851_IER , KSZ8851_IER_LCIE | KSZ8851_IER_RXIE <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imageaffine ) { zval * IM ; gdImagePtr src ; gdImagePtr dst ; gdRect rect ; gdRectPtr pRect = NULL ; zval * z_rect = NULL ; zval * z_affine ; zval * * tmp ; double affine [ 6 ] ; int i , nelems ; zval * * zval_affine_elem = NULL ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"ra|a\" , & IM , & z_affine , & z_rect ) == FAILURE ) { return ; } ZEND_FETCH_RESOURCE ( src , gdImagePtr , & IM , - 1 , \"Image\" , le_gd ) ; if ( ( nelems = zend_hash_num_elements ( Z_ARRVAL_P ( z_affine ) ) ) != 6 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Affine<S2SV_blank>array<S2SV_blank>must<S2SV_blank>have<S2SV_blank>six<S2SV_blank>elements\" ) ; RETURN_FALSE ; } for ( i = 0 ; i < nelems ; i ++ ) { if ( zend_hash_index_find ( Z_ARRVAL_P ( z_affine ) , i , ( void * * ) & zval_affine_elem ) == SUCCESS ) { switch ( Z_TYPE_PP ( zval_affine_elem ) ) { case IS_LONG : affine [ i ] = Z_LVAL_PP ( zval_affine_elem ) ; break ; case IS_DOUBLE : affine [ i ] = Z_DVAL_PP ( zval_affine_elem ) ; break ; case IS_STRING : <S2SV_StartBug> convert_to_double_ex ( zval_affine_elem ) ; <S2SV_EndBug> <S2SV_StartBug> affine [ i ] = Z_DVAL_PP ( zval_affine_elem ) ; <S2SV_EndBug> break ; default : php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Invalid<S2SV_blank>type<S2SV_blank>for<S2SV_blank>element<S2SV_blank>%i\" , i ) ; RETURN_FALSE ; } } } if ( z_rect != NULL ) { if ( zend_hash_find ( HASH_OF ( z_rect ) , \"x\" , sizeof ( \"x\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> convert_to_long_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> rect . x = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> } else { <S2SV_EndBug> php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>x<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"y\" , sizeof ( \"x\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> convert_to_long_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> rect . y = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> } else { <S2SV_EndBug> php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>y<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"width\" , sizeof ( \"width\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> convert_to_long_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> rect . width = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> } else { <S2SV_EndBug> php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>width\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"height\" , sizeof ( \"height\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> convert_to_long_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> rect . height = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>height\" ) ; RETURN_FALSE ; } pRect = & rect ; } else { rect . x = - 1 ; rect . y = - 1 ; rect . width = gdImageSX ( src ) ; rect . height = gdImageSY ( src ) ; pRect = NULL ; } if ( gdTransformAffineGetImage ( & dst , src , pRect , affine ) != GD_TRUE ) { RETURN_FALSE ; } if ( dst == NULL ) { RETURN_FALSE ; } else { ZEND_REGISTER_RESOURCE ( return_value , dst , le_gd ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case IS_STRING : { zval dval ; dval = * * zval_affine_elem ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; affine <S2SV_ModStart> i ] = Z_DVAL ( dval ) ; } <S2SV_ModEnd> break ; default <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval <S2SV_ModEnd> ) ; rect <S2SV_ModStart> . x = Z_LVAL ( lval ) ; } else { rect . x = <S2SV_ModStart> ) ; } } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval <S2SV_ModEnd> ) ; rect <S2SV_ModStart> . y = Z_LVAL ( lval ) ; } else { rect . y = <S2SV_ModStart> ) ; } } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval <S2SV_ModEnd> ) ; rect <S2SV_ModStart> . width = Z_LVAL ( lval ) ; } else { rect . width = <S2SV_ModStart> ) ; } } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval <S2SV_ModEnd> ) ; rect <S2SV_ModStart> . height = Z_LVAL ( lval ) ; } else { rect . height = <S2SV_ModStart> tmp ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6712\n\n```\nCWE-20 int vp9_alloc_context_buffers ( VP9_COMMON * cm , int width , int height ) { int new_mi_size ; vp9_set_mb_mi ( cm , width , height ) ; new_mi_size = cm -> mi_stride * calc_mi_size ( cm -> mi_rows ) ; if ( cm -> mi_alloc_size < new_mi_size ) { cm -> free_mi ( cm ) ; if ( cm -> alloc_mi ( cm , new_mi_size ) ) goto fail ; } if ( cm -> seg_map_alloc_size < cm -> mi_rows * cm -> mi_cols ) { free_seg_map ( cm ) ; if ( alloc_seg_map ( cm , cm -> mi_rows * cm -> mi_cols ) ) goto fail ; } if ( cm -> above_context_alloc_cols < cm -> mi_cols ) { vpx_free ( cm -> above_context ) ; cm -> above_context = ( ENTROPY_CONTEXT * ) vpx_calloc ( 2 * mi_cols_aligned_to_sb ( cm -> mi_cols ) * MAX_MB_PLANE , sizeof ( * cm -> above_context ) ) ; if ( ! cm -> above_context ) goto fail ; vpx_free ( cm -> above_seg_context ) ; cm -> above_seg_context = ( PARTITION_CONTEXT * ) vpx_calloc ( mi_cols_aligned_to_sb ( cm -> mi_cols ) , sizeof ( * cm -> above_seg_context ) ) ; if ( ! cm -> above_seg_context ) goto fail ; cm -> above_context_alloc_cols = cm -> mi_cols ; } return 0 ; fail : <S2SV_StartBug> vp9_free_context_buffers ( cm ) ; <S2SV_EndBug> return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; fail : vp9_set_mb_mi ( cm , 0 , 0 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-319(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5489\n\n```\nCWE-319 static int mincore_pte_range ( pmd_t * pmd , unsigned long addr , unsigned long end , struct mm_walk * walk ) { spinlock_t * ptl ; struct vm_area_struct * vma = walk -> vma ; pte_t * ptep ; unsigned char * vec = walk -> private ; int nr = ( end - addr ) >> PAGE_SHIFT ; ptl = pmd_trans_huge_lock ( pmd , vma ) ; if ( ptl ) { memset ( vec , 1 , nr ) ; spin_unlock ( ptl ) ; goto out ; } if ( pmd_trans_unstable ( pmd ) ) { <S2SV_StartBug> __mincore_unmapped_range ( addr , end , vma , vec ) ; <S2SV_EndBug> goto out ; } ptep = pte_offset_map_lock ( walk -> mm , pmd , addr , & ptl ) ; for ( ; addr != end ; ptep ++ , addr += PAGE_SIZE ) { pte_t pte = * ptep ; if ( pte_none ( pte ) ) <S2SV_StartBug> __mincore_unmapped_range ( addr , addr + PAGE_SIZE , <S2SV_EndBug> vma , vec ) ; else if ( pte_present ( pte ) ) * vec = 1 ; else { swp_entry_t entry = pte_to_swp_entry ( pte ) ; <S2SV_StartBug> if ( non_swap_entry ( entry ) ) { <S2SV_EndBug> * vec = 1 ; } else { # ifdef CONFIG_SWAP * vec = mincore_page ( swap_address_space ( entry ) , swp_offset ( entry ) ) ; # else WARN_ON ( 1 ) ; * vec = 1 ; # endif } } vec ++ ; } pte_unmap_unlock ( ptep - 1 , ptl ) ; out : walk -> private += nr ; cond_resched ( ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { memset ( vec , 1 , nr <S2SV_ModEnd> ) ; goto <S2SV_ModStart> pte ) ) * vec = 0 <S2SV_ModEnd> ; else if <S2SV_ModStart> pte ) ; * vec = ! ! <S2SV_ModEnd> non_swap_entry ( entry <S2SV_ModStart> ( entry ) ; <S2SV_ModEnd> } vec ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3078\n\n```\nCWE-190 static void php_zip_get_from ( INTERNAL_FUNCTION_PARAMETERS , int type ) { struct zip * intern ; zval * self = getThis ( ) ; struct zip_stat sb ; struct zip_file * zf ; zend_long index = - 1 ; zend_long flags = 0 ; zend_long len = 0 ; zend_string * filename ; zend_string * buffer ; int n = 0 ; if ( ! self ) { RETURN_FALSE ; } ZIP_FROM_OBJECT ( intern , self ) ; if ( type == 1 ) { if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) , \"P|ll\" , & filename , & len , & flags ) == FAILURE ) { return ; } PHP_ZIP_STAT_PATH ( intern , ZSTR_VAL ( filename ) , ZSTR_LEN ( filename ) , flags , sb ) ; } else { if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) , \"l|ll\" , & index , & len , & flags ) == FAILURE ) { return ; } PHP_ZIP_STAT_INDEX ( intern , index , 0 , sb ) ; } if ( sb . size < 1 ) { RETURN_EMPTY_STRING ( ) ; } if ( len < 1 ) { len = sb . size ; } if ( index >= 0 ) { zf = zip_fopen_index ( intern , index , flags ) ; } else { zf = zip_fopen ( intern , ZSTR_VAL ( filename ) , flags ) ; } if ( zf == NULL ) { RETURN_FALSE ; } <S2SV_StartBug> buffer = zend_string_alloc ( len , 0 ) ; <S2SV_EndBug> n = zip_fread ( zf , ZSTR_VAL ( buffer ) , ZSTR_LEN ( buffer ) ) ; if ( n < 1 ) { zend_string_free ( buffer ) ; RETURN_EMPTY_STRING ( ) ; } zip_fclose ( zf ) ; ZSTR_VAL ( buffer ) [ n ] = '\\\\0' ; ZSTR_LEN ( buffer ) = n ; RETURN_NEW_STR ( buffer ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } buffer = zend_string_safe_alloc ( 1 , len , 0 <S2SV_ModEnd> , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2016\n\n```\nCWE-269 void virtio_config_writew ( VirtIODevice * vdev , uint32_t addr , uint32_t data ) { VirtioDeviceClass * k = VIRTIO_DEVICE_GET_CLASS ( vdev ) ; uint16_t val = data ; <S2SV_StartBug> if ( addr > ( vdev -> config_len - sizeof ( val ) ) ) <S2SV_EndBug> return ; stw_p ( vdev -> config + addr , val ) ; if ( k -> set_config ) { k -> set_config ( vdev , vdev -> config ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( addr + <S2SV_ModEnd> sizeof ( val <S2SV_ModStart> ( val ) > vdev -> config_len ) { return ; } <S2SV_ModEnd> stw_p ( vdev\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 void jiffies_to_timespec ( const unsigned long jiffies , struct timespec * value ) { <S2SV_StartBug> u64 nsec = ( u64 ) jiffies * TICK_NSEC ; <S2SV_EndBug> <S2SV_StartBug> value -> tv_sec = div_long_long_rem ( nsec , NSEC_PER_SEC , & value -> tv_nsec ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) { u32 rem ; value -> tv_sec = div_u64_rem ( <S2SV_ModEnd> ( u64 ) <S2SV_ModStart> jiffies * TICK_NSEC , NSEC_PER_SEC , & rem ) <S2SV_ModStart> ; value -> tv_nsec = rem <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17862\n\n```\nCWE-20 int bpf_check ( struct bpf_prog * * prog , union bpf_attr * attr ) { struct bpf_verifier_env * env ; struct bpf_verifer_log * log ; int ret = - EINVAL ; if ( ARRAY_SIZE ( bpf_verifier_ops ) == 0 ) return - EINVAL ; env = kzalloc ( sizeof ( struct bpf_verifier_env ) , GFP_KERNEL ) ; if ( ! env ) return - ENOMEM ; log = & env -> log ; env -> insn_aux_data = vzalloc ( sizeof ( struct bpf_insn_aux_data ) * ( * prog ) -> len ) ; ret = - ENOMEM ; if ( ! env -> insn_aux_data ) goto err_free_env ; env -> prog = * prog ; env -> ops = bpf_verifier_ops [ env -> prog -> type ] ; mutex_lock ( & bpf_verifier_lock ) ; if ( attr -> log_level || attr -> log_buf || attr -> log_size ) { log -> level = attr -> log_level ; log -> ubuf = ( char __user * ) ( unsigned long ) attr -> log_buf ; log -> len_total = attr -> log_size ; ret = - EINVAL ; if ( log -> len_total < 128 || log -> len_total > UINT_MAX >> 8 || ! log -> level || ! log -> ubuf ) goto err_unlock ; } env -> strict_alignment = ! ! ( attr -> prog_flags & BPF_F_STRICT_ALIGNMENT ) ; if ( ! IS_ENABLED ( CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS ) ) env -> strict_alignment = true ; if ( env -> prog -> aux -> offload ) { ret = bpf_prog_offload_verifier_prep ( env ) ; if ( ret ) goto err_unlock ; } ret = replace_map_fd_with_map_ptr ( env ) ; if ( ret < 0 ) goto skip_full_check ; env -> explored_states = kcalloc ( env -> prog -> len , sizeof ( struct bpf_verifier_state_list * ) , GFP_USER ) ; ret = - ENOMEM ; if ( ! env -> explored_states ) goto skip_full_check ; ret = check_cfg ( env ) ; if ( ret < 0 ) goto skip_full_check ; env -> allow_ptr_leaks = capable ( CAP_SYS_ADMIN ) ; ret = do_check ( env ) ; if ( env -> cur_state ) { free_verifier_state ( env -> cur_state , true ) ; env -> cur_state = NULL ; } skip_full_check : while ( ! pop_stack ( env , NULL , NULL ) ) ; free_states ( env ) ; if ( ret == 0 ) <S2SV_StartBug> ret = convert_ctx_accesses ( env ) ; <S2SV_EndBug> if ( ret == 0 ) ret = fixup_bpf_calls ( env ) ; if ( log -> level && bpf_verifier_log_full ( log ) ) ret = - ENOSPC ; if ( log -> level && ! log -> ubuf ) { ret = - EFAULT ; goto err_release_maps ; } if ( ret == 0 && env -> used_map_cnt ) { env -> prog -> aux -> used_maps = kmalloc_array ( env -> used_map_cnt , sizeof ( env -> used_maps [ 0 ] ) , GFP_KERNEL ) ; if ( ! env -> prog -> aux -> used_maps ) { ret = - ENOMEM ; goto err_release_maps ; } memcpy ( env -> prog -> aux -> used_maps , env -> used_maps , sizeof ( env -> used_maps [ 0 ] ) * env -> used_map_cnt ) ; env -> prog -> aux -> used_map_cnt = env -> used_map_cnt ; convert_pseudo_ld_imm64 ( env ) ; } err_release_maps : if ( ! env -> prog -> aux -> used_maps ) release_maps ( env ) ; * prog = env -> prog ; err_unlock : mutex_unlock ( & bpf_verifier_lock ) ; vfree ( env -> insn_aux_data ) ; err_free_env : kfree ( env ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) sanitize_dead_code ( env ) ; if ( ret == 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void * vpx_realloc ( void * memblk , size_t size ) { void * addr , * new_addr = NULL ; int align = DEFAULT_ALIGNMENT ; if ( ! memblk ) new_addr = vpx_malloc ( size ) ; else if ( ! size ) vpx_free ( memblk ) ; else { addr = ( void * ) ( ( ( size_t * ) memblk ) [ - 1 ] ) ; memblk = NULL ; <S2SV_StartBug> # if CONFIG_MEM_MANAGER <S2SV_EndBug> new_addr = vpx_mm_realloc ( addr , size + align + ADDRESS_STORAGE_SIZE ) ; <S2SV_StartBug> # else <S2SV_EndBug> new_addr = VPX_REALLOC_L ( addr , size + align + ADDRESS_STORAGE_SIZE ) ; # endif if ( new_addr ) { addr = new_addr ; new_addr = ( void * ) ( ( ( size_t ) ( ( unsigned char * ) new_addr + ADDRESS_STORAGE_SIZE ) + ( align - 1 ) ) & ( size_t ) - align ) ; ( ( size_t * ) new_addr ) [ - 1 ] = ( size_t ) addr ; } } return new_addr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; new_addr = realloc <S2SV_ModEnd> ( addr , <S2SV_ModStart> ADDRESS_STORAGE_SIZE ) ; <S2SV_ModEnd> if ( new_addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11368\n\n```\nCWE-617 static void finish_process_as_req ( struct as_req_state * state , krb5_error_code errcode ) { krb5_key_data * server_key ; krb5_keyblock * as_encrypting_key = NULL ; krb5_data * response = NULL ; const char * emsg = 0 ; int did_log = 0 ; loop_respond_fn oldrespond ; void * oldarg ; kdc_realm_t * kdc_active_realm = state -> active_realm ; krb5_audit_state * au_state = state -> au_state ; assert ( state ) ; oldrespond = state -> respond ; oldarg = state -> arg ; if ( errcode ) goto egress ; au_state -> stage = ENCR_REP ; if ( ( errcode = validate_forwardable ( state -> request , * state -> client , * state -> server , state -> kdc_time , & state -> status ) ) ) { errcode += ERROR_TABLE_BASE_krb5 ; goto egress ; } errcode = check_indicators ( kdc_context , state -> server , state -> auth_indicators ) ; if ( errcode ) { state -> status = \"HIGHER_AUTHENTICATION_REQUIRED\" ; goto egress ; } state -> ticket_reply . enc_part2 = & state -> enc_tkt_reply ; if ( ( errcode = krb5_dbe_find_enctype ( kdc_context , state -> server , - 1 , - 1 , 0 , & server_key ) ) ) { state -> status = \"FINDING_SERVER_KEY\" ; goto egress ; } if ( ( errcode = krb5_dbe_decrypt_key_data ( kdc_context , NULL , server_key , & state -> server_keyblock , NULL ) ) ) { state -> status = \"DECRYPT_SERVER_KEY\" ; goto egress ; } state -> reply . msg_type = KRB5_AS_REP ; state -> reply . client = state -> enc_tkt_reply . client ; state -> reply . ticket = & state -> ticket_reply ; state -> reply_encpart . session = & state -> session_key ; if ( ( errcode = fetch_last_req_info ( state -> client , & state -> reply_encpart . last_req ) ) ) { state -> status = \"FETCH_LAST_REQ\" ; goto egress ; } state -> reply_encpart . nonce = state -> request -> nonce ; state -> reply_encpart . key_exp = get_key_exp ( state -> client ) ; state -> reply_encpart . flags = state -> enc_tkt_reply . flags ; state -> reply_encpart . server = state -> ticket_reply . server ; state -> reply_encpart . times = state -> enc_tkt_reply . times ; state -> reply_encpart . times . authtime = state -> authtime = state -> kdc_time ; state -> reply_encpart . caddrs = state -> enc_tkt_reply . caddrs ; state -> reply_encpart . enc_padata = NULL ; errcode = return_padata ( kdc_context , & state -> rock , state -> req_pkt , state -> request , & state -> reply , & state -> client_keyblock , & state -> pa_context ) ; if ( errcode ) { state -> status = \"KDC_RETURN_PADATA\" ; goto egress ; } if ( state -> client_keyblock . enctype == ENCTYPE_NULL ) { state -> status = \"CANT_FIND_CLIENT_KEY\" ; errcode = KRB5KDC_ERR_ETYPE_NOSUPP ; goto egress ; } errcode = handle_authdata ( kdc_context , state -> c_flags , state -> client , state -> server , NULL , state -> local_tgt , & state -> client_keyblock , & state -> server_keyblock , NULL , state -> req_pkt , state -> request , NULL , NULL , state -> auth_indicators , & state -> enc_tkt_reply ) ; if ( errcode ) { krb5_klog_syslog ( LOG_INFO , _ ( \"AS_REQ<S2SV_blank>:<S2SV_blank>handle_authdata<S2SV_blank>(%d)\" ) , errcode ) ; state -> status = \"HANDLE_AUTHDATA\" ; goto egress ; } errcode = krb5_encrypt_tkt_part ( kdc_context , & state -> server_keyblock , & state -> ticket_reply ) ; if ( errcode ) { state -> status = \"ENCRYPT_TICKET\" ; goto egress ; } errcode = kau_make_tkt_id ( kdc_context , & state -> ticket_reply , & au_state -> tkt_out_id ) ; if ( errcode ) { state -> status = \"GENERATE_TICKET_ID\" ; goto egress ; } state -> ticket_reply . enc_part . kvno = server_key -> key_data_kvno ; errcode = kdc_fast_response_handle_padata ( state -> rstate , state -> request , & state -> reply , state -> client_keyblock . enctype ) ; if ( errcode ) { state -> status = \"MAKE_FAST_RESPONSE\" ; goto egress ; } state -> reply . enc_part . enctype = state -> client_keyblock . enctype ; errcode = kdc_fast_handle_reply_key ( state -> rstate , & state -> client_keyblock , & as_encrypting_key ) ; if ( errcode ) { state -> status = \"MAKE_FAST_REPLY_KEY\" ; goto egress ; } errcode = return_enc_padata ( kdc_context , state -> req_pkt , state -> request , as_encrypting_key , state -> server , & state -> reply_encpart , FALSE ) ; if ( errcode ) { state -> status = \"KDC_RETURN_ENC_PADATA\" ; goto egress ; } if ( kdc_fast_hide_client ( state -> rstate ) ) state -> reply . client = ( krb5_principal ) krb5_anonymous_principal ( ) ; errcode = krb5_encode_kdc_rep ( kdc_context , KRB5_AS_REP , & state -> reply_encpart , 0 , as_encrypting_key , & state -> reply , & response ) ; if ( state -> client_key != NULL ) state -> reply . enc_part . kvno = state -> client_key -> key_data_kvno ; if ( errcode ) { state -> status = \"ENCODE_KDC_REP\" ; goto egress ; } memset ( state -> reply . enc_part . ciphertext . data , 0 , state -> reply . enc_part . ciphertext . length ) ; free ( state -> reply . enc_part . ciphertext . data ) ; log_as_req ( kdc_context , state -> local_addr , state -> remote_addr , state -> request , & state -> reply , state -> client , state -> cname , state -> server , state -> sname , state -> authtime , 0 , 0 , 0 ) ; did_log = 1 ; egress : <S2SV_StartBug> if ( errcode != 0 ) <S2SV_EndBug> assert ( state -> status != 0 ) ; au_state -> status = state -> status ; au_state -> reply = & state -> reply ; kau_as_req ( kdc_context , ( errcode || state -> preauth_err ) ? FALSE : TRUE , au_state ) ; kau_free_kdc_req ( au_state ) ; free_padata_context ( kdc_context , state -> pa_context ) ; if ( as_encrypting_key ) krb5_free_keyblock ( kdc_context , as_encrypting_key ) ; if ( errcode ) emsg = krb5_get_error_message ( kdc_context , errcode ) ; if ( state -> status ) { log_as_req ( kdc_context , state -> local_addr , state -> remote_addr , state -> request , & state -> reply , state -> client , state -> cname , state -> server , state -> sname , state -> authtime , state -> status , errcode , emsg ) ; did_log = 1 ; } if ( errcode ) { if ( state -> status == 0 ) { state -> status = emsg ; } if ( errcode != KRB5KDC_ERR_DISCARD ) { errcode -= ERROR_TABLE_BASE_krb5 ; if ( errcode < 0 || errcode > KRB_ERR_MAX ) errcode = KRB_ERR_GENERIC ; errcode = prepare_error_as ( state -> rstate , state -> request , state -> local_tgt , errcode , state -> e_data , state -> typed_e_data , ( ( state -> client != NULL ) ? state -> client -> princ : NULL ) , & response , state -> status ) ; state -> status = 0 ; } } if ( emsg ) krb5_free_error_message ( kdc_context , emsg ) ; if ( state -> enc_tkt_reply . authorization_data != NULL ) krb5_free_authdata ( kdc_context , state -> enc_tkt_reply . authorization_data ) ; if ( state -> server_keyblock . contents != NULL ) krb5_free_keyblock_contents ( kdc_context , & state -> server_keyblock ) ; if ( state -> client_keyblock . contents != NULL ) krb5_free_keyblock_contents ( kdc_context , & state -> client_keyblock ) ; if ( state -> reply . padata != NULL ) krb5_free_pa_data ( kdc_context , state -> reply . padata ) ; if ( state -> reply_encpart . enc_padata ) krb5_free_pa_data ( kdc_context , state -> reply_encpart . enc_padata ) ; if ( state -> cname != NULL ) free ( state -> cname ) ; if ( state -> sname != NULL ) free ( state -> sname ) ; krb5_db_free_principal ( kdc_context , state -> client ) ; krb5_db_free_principal ( kdc_context , state -> server ) ; krb5_db_free_principal ( kdc_context , state -> local_tgt_storage ) ; if ( state -> session_key . contents != NULL ) krb5_free_keyblock_contents ( kdc_context , & state -> session_key ) ; if ( state -> ticket_reply . enc_part . ciphertext . data != NULL ) { memset ( state -> ticket_reply . enc_part . ciphertext . data , 0 , state -> ticket_reply . enc_part . ciphertext . length ) ; free ( state -> ticket_reply . enc_part . ciphertext . data ) ; } krb5_free_pa_data ( kdc_context , state -> e_data ) ; krb5_free_data ( kdc_context , state -> inner_body ) ; kdc_free_rstate ( state -> rstate ) ; krb5_free_kdc_req ( kdc_context , state -> request ) ; k5_free_data_ptr_list ( state -> auth_indicators ) ; assert ( did_log != 0 ) ; free ( state ) ; ( * oldrespond ) ( oldarg , errcode , response ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> errcode != 0 && state -> status == NULL ) state -> status = \"UNKNOWN_REASON\" <S2SV_ModEnd> ; au_state ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10067\n\n```\nCWE-119 static Image * ReadVIFFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define VFF_CM_genericRGB 15 # define VFF_CM_ntscRGB 1 # define VFF_CM_NONE 0 # define VFF_DEP_DECORDER 0x4 # define VFF_DEP_NSORDER 0x8 # define VFF_DES_RAW 0 # define VFF_LOC_IMPLICIT 1 # define VFF_MAPTYP_NONE 0 # define VFF_MAPTYP_1_BYTE 1 # define VFF_MAPTYP_2_BYTE 2 # define VFF_MAPTYP_4_BYTE 4 # define VFF_MAPTYP_FLOAT 5 # define VFF_MAPTYP_DOUBLE 7 # define VFF_MS_NONE 0 # define VFF_MS_ONEPERBAND 1 # define VFF_MS_SHARED 3 # define VFF_TYP_BIT 0 # define VFF_TYP_1_BYTE 1 # define VFF_TYP_2_BYTE 2 # define VFF_TYP_4_BYTE 4 # define VFF_TYP_FLOAT 5 # define VFF_TYP_DOUBLE 9 typedef struct _ViffInfo { unsigned char identifier , file_type , release , version , machine_dependency , reserve [ 3 ] ; char comment [ 512 ] ; unsigned int rows , columns , subrows ; int x_offset , y_offset ; float x_bits_per_pixel , y_bits_per_pixel ; unsigned int location_type , location_dimension , number_of_images , number_data_bands , data_storage_type , data_encode_scheme , map_scheme , map_storage_type , map_rows , map_columns , map_subrows , map_enable , maps_per_cycle , color_space_model ; } ViffInfo ; double min_value , scale_factor , value ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register IndexPacket * indexes ; register ssize_t x ; register PixelPacket * q ; register ssize_t i ; register unsigned char * p ; size_t bytes_per_pixel , max_packets , quantum ; ssize_t count , y ; unsigned char * pixels ; unsigned long lsb_first ; ViffInfo viff_info ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 1 , & viff_info . identifier ) ; do { if ( ( count != 1 ) || ( ( unsigned char ) viff_info . identifier != 0xab ) ) ThrowReaderException ( CorruptImageError , \"NotAVIFFImage\" ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . file_type ) , & viff_info . file_type ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . release ) , & viff_info . release ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . version ) , & viff_info . version ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . machine_dependency ) , & viff_info . machine_dependency ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . reserve ) , viff_info . reserve ) ; ( void ) ReadBlob ( image , 512 , ( unsigned char * ) viff_info . comment ) ; viff_info . comment [ 511 ] = '\\\\0' ; if ( strlen ( viff_info . comment ) > 4 ) ( void ) SetImageProperty ( image , \"comment\" , viff_info . comment ) ; if ( ( viff_info . machine_dependency == VFF_DEP_DECORDER ) || ( viff_info . machine_dependency == VFF_DEP_NSORDER ) ) image -> endian = LSBEndian ; else image -> endian = MSBEndian ; viff_info . rows = ReadBlobLong ( image ) ; viff_info . columns = ReadBlobLong ( image ) ; viff_info . subrows = ReadBlobLong ( image ) ; viff_info . x_offset = ReadBlobSignedLong ( image ) ; viff_info . y_offset = ReadBlobSignedLong ( image ) ; viff_info . x_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . y_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . location_type = ReadBlobLong ( image ) ; viff_info . location_dimension = ReadBlobLong ( image ) ; viff_info . number_of_images = ReadBlobLong ( image ) ; viff_info . number_data_bands = ReadBlobLong ( image ) ; viff_info . data_storage_type = ReadBlobLong ( image ) ; viff_info . data_encode_scheme = ReadBlobLong ( image ) ; viff_info . map_scheme = ReadBlobLong ( image ) ; viff_info . map_storage_type = ReadBlobLong ( image ) ; viff_info . map_rows = ReadBlobLong ( image ) ; viff_info . map_columns = ReadBlobLong ( image ) ; viff_info . map_subrows = ReadBlobLong ( image ) ; viff_info . map_enable = ReadBlobLong ( image ) ; viff_info . maps_per_cycle = ReadBlobLong ( image ) ; viff_info . color_space_model = ReadBlobLong ( image ) ; for ( i = 0 ; i < 420 ; i ++ ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; image -> depth = viff_info . x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH ; number_pixels = ( MagickSizeType ) viff_info . columns * viff_info . rows ; if ( number_pixels != ( size_t ) number_pixels ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( number_pixels == 0 ) ThrowReaderException ( CoderError , \"ImageColumnOrRowSizeIsNotSupported\" ) ; if ( ( viff_info . number_data_bands < 1 ) || ( viff_info . number_data_bands > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( viff_info . data_storage_type != VFF_TYP_BIT ) && ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_2_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_4_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_FLOAT ) && ( viff_info . data_storage_type != VFF_TYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"DataStorageTypeIsNotSupported\" ) ; if ( viff_info . data_encode_scheme != VFF_DES_RAW ) ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; if ( ( viff_info . map_storage_type != VFF_MAPTYP_NONE ) && ( viff_info . map_storage_type != VFF_MAPTYP_1_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_2_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_4_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_FLOAT ) && ( viff_info . map_storage_type != VFF_MAPTYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"MapStorageTypeIsNotSupported\" ) ; if ( ( viff_info . color_space_model != VFF_CM_NONE ) && ( viff_info . color_space_model != VFF_CM_ntscRGB ) && ( viff_info . color_space_model != VFF_CM_genericRGB ) ) ThrowReaderException ( CoderError , \"ColorspaceModelIsNotSupported\" ) ; if ( viff_info . location_type != VFF_LOC_IMPLICIT ) ThrowReaderException ( CoderError , \"LocationTypeIsNotSupported\" ) ; if ( viff_info . number_of_images != 1 ) ThrowReaderException ( CoderError , \"NumberOfImagesIsNotSupported\" ) ; if ( viff_info . map_rows == 0 ) viff_info . map_scheme = VFF_MS_NONE ; switch ( ( int ) viff_info . map_scheme ) { case VFF_MS_NONE : { if ( viff_info . number_data_bands < 3 ) { if ( viff_info . data_storage_type == VFF_TYP_BIT ) image -> colors = 2 ; else if ( viff_info . data_storage_type == VFF_MAPTYP_1_BYTE ) image -> colors = 256UL ; else image -> colors = image -> depth <= 8 ? 256UL : 65536UL ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case VFF_MS_ONEPERBAND : case VFF_MS_SHARED : { unsigned char * viff_colormap ; switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_1_BYTE : bytes_per_pixel = 1 ; break ; case VFF_MAPTYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_MAPTYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } image -> colors = viff_info . map_columns ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( viff_info . map_rows > ( viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ; if ( viff_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ReadBlob ( image , bytes_per_pixel * image -> colors * viff_info . map_rows , viff_colormap ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : { MSBOrderShort ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } case VFF_MAPTYP_4_BYTE : case VFF_MAPTYP_FLOAT : { MSBOrderLong ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } default : break ; } for ( i = 0 ; i < ( ssize_t ) ( viff_info . map_rows * image -> colors ) ; i ++ ) { switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : value = 1.0 * ( ( short * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_4_BYTE : value = 1.0 * ( ( int * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_FLOAT : value = ( ( float * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_DOUBLE : value = ( ( double * ) viff_colormap ) [ i ] ; break ; default : value = 1.0 * viff_colormap [ i ] ; break ; } if ( i < ( ssize_t ) image -> colors ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } else if ( i < ( ssize_t ) ( 2 * image -> colors ) ) image -> colormap [ i % image -> colors ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; else if ( i < ( ssize_t ) ( 3 * image -> colors ) ) image -> colormap [ i % image -> colors ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } viff_colormap = ( unsigned char * ) RelinquishMagickMemory ( viff_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> matte = viff_info . number_data_bands == 4 ? MagickTrue : MagickFalse ; image -> storage_class = ( viff_info . number_data_bands < 3 ? PseudoClass : DirectClass ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_TYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_TYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_TYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } if ( viff_info . data_storage_type == VFF_TYP_BIT ) { <S2SV_StartBug> if ( CheckMemoryOverflow ( ( image -> columns + 7UL ) >> 3UL , image -> rows ) != MagickFalse ) <S2SV_EndBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; } else { <S2SV_StartBug> if ( CheckMemoryOverflow ( number_pixels , viff_info . number_data_bands ) != MagickFalse ) <S2SV_EndBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; max_packets = ( size_t ) ( number_pixels * viff_info . number_data_bands ) ; } pixels = ( unsigned char * ) AcquireQuantumMemory ( MagickMax ( number_pixels , max_packets ) , bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ReadBlob ( image , bytes_per_pixel * max_packets , pixels ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : { MSBOrderShort ( pixels , bytes_per_pixel * max_packets ) ; break ; } case VFF_TYP_4_BYTE : case VFF_TYP_FLOAT : { MSBOrderLong ( pixels , bytes_per_pixel * max_packets ) ; break ; } default : break ; } min_value = 0.0 ; scale_factor = 1.0 ; if ( ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . map_scheme == VFF_MS_NONE ) ) { double max_value ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ 0 ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ 0 ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ 0 ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ 0 ] ; break ; default : value = 1.0 * pixels [ 0 ] ; break ; } max_value = value ; min_value = value ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( value > max_value ) max_value = value ; else if ( value < min_value ) min_value = value ; } if ( ( min_value == 0 ) && ( max_value == 0 ) ) scale_factor = 0 ; else if ( min_value == max_value ) { scale_factor = ( MagickRealType ) QuantumRange / min_value ; min_value = 0 ; } else scale_factor = ( MagickRealType ) QuantumRange / ( max_value - min_value ) ; } p = ( unsigned char * ) pixels ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( viff_info . map_scheme == VFF_MS_NONE ) { value = ( value - min_value ) * scale_factor ; if ( value > QuantumRange ) value = QuantumRange ; else if ( value < 0 ) value = 0 ; } * p = ( unsigned char ) ( ( Quantum ) value ) ; p ++ ; } p = ( unsigned char * ) pixels ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { if ( image -> storage_class != PseudoClass ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) ( image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( q , quantum == 0 ? 0 : QuantumRange ) ; SetPixelGreen ( q , quantum == 0 ? 0 : QuantumRange ) ; SetPixelBlue ( q , quantum == 0 ? 0 : QuantumRange ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( indexes + x + bit , quantum ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( int ) ( image -> columns % 8 ) ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( q , quantum == 0 ? 0 : QuantumRange ) ; SetPixelGreen ( q , quantum == 0 ? 0 : QuantumRange ) ; SetPixelBlue ( q , quantum == 0 ? 0 : QuantumRange ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( indexes + x + bit , quantum ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else if ( image -> storage_class == PseudoClass ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) SetPixelIndex ( indexes + x , * p ++ ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else { number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( q , ScaleCharToQuantum ( * p ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * ( p + number_pixels ) ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( * ( p + 2 * number_pixels ) ) ) ; if ( image -> colors != 0 ) { ssize_t index ; index = ( ssize_t ) GetPixelRed ( q ) ; SetPixelRed ( q , image -> colormap [ ( ssize_t ) ConstrainColormapIndex ( image , index ) ] . red ) ; index = ( ssize_t ) GetPixelGreen ( q ) ; SetPixelGreen ( q , image -> colormap [ ( ssize_t ) ConstrainColormapIndex ( image , index ) ] . green ) ; index = ( ssize_t ) GetPixelRed ( q ) ; SetPixelBlue ( q , image -> colormap [ ( ssize_t ) ConstrainColormapIndex ( image , index ) ] . blue ) ; } SetPixelOpacity ( q , image -> matte != MagickFalse ? QuantumRange - ScaleCharToQuantum ( * ( p + number_pixels * 3 ) ) : OpaqueOpacity ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; count = ReadBlob ( image , 1 , & viff_info . identifier ) ; if ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( HeapOverflowSanityCheck <S2SV_ModEnd> ( ( image <S2SV_ModStart> { if ( HeapOverflowSanityCheck <S2SV_ModEnd> ( number_pixels ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 static int newkeys_from_blob ( struct sshbuf * m , struct ssh * ssh , int mode ) { struct sshbuf * b = NULL ; struct sshcomp * comp ; struct sshenc * enc ; struct sshmac * mac ; struct newkeys * newkey = NULL ; size_t keylen , ivlen , maclen ; int r ; if ( ( newkey = calloc ( 1 , sizeof ( * newkey ) ) ) == NULL ) { r = SSH_ERR_ALLOC_FAIL ; goto out ; } if ( ( r = sshbuf_froms ( m , & b ) ) != 0 ) goto out ; # ifdef DEBUG_PK sshbuf_dump ( b , stderr ) ; # endif enc = & newkey -> enc ; mac = & newkey -> mac ; comp = & newkey -> comp ; if ( ( r = sshbuf_get_cstring ( b , & enc -> name , NULL ) ) != 0 || ( r = sshbuf_get ( b , & enc -> cipher , sizeof ( enc -> cipher ) ) ) != 0 || ( r = sshbuf_get_u32 ( b , ( u_int * ) & enc -> enabled ) ) != 0 || ( r = sshbuf_get_u32 ( b , & enc -> block_size ) ) != 0 || ( r = sshbuf_get_string ( b , & enc -> key , & keylen ) ) != 0 || ( r = sshbuf_get_string ( b , & enc -> iv , & ivlen ) ) != 0 ) goto out ; if ( cipher_authlen ( enc -> cipher ) == 0 ) { if ( ( r = sshbuf_get_cstring ( b , & mac -> name , NULL ) ) != 0 ) goto out ; if ( ( r = mac_setup ( mac , mac -> name ) ) != 0 ) goto out ; if ( ( r = sshbuf_get_u32 ( b , ( u_int * ) & mac -> enabled ) ) != 0 || ( r = sshbuf_get_string ( b , & mac -> key , & maclen ) ) != 0 ) goto out ; if ( maclen > mac -> key_len ) { r = SSH_ERR_INVALID_FORMAT ; goto out ; } mac -> key_len = maclen ; } <S2SV_StartBug> if ( ( r = sshbuf_get_u32 ( b , & comp -> type ) ) != 0 || <S2SV_EndBug> ( r = sshbuf_get_u32 ( b , ( u_int * ) & comp -> enabled ) ) != 0 || ( r = sshbuf_get_cstring ( b , & comp -> name , NULL ) ) != 0 ) goto out ; if ( enc -> name == NULL || cipher_by_name ( enc -> name ) != enc -> cipher ) { r = SSH_ERR_INVALID_FORMAT ; goto out ; } if ( sshbuf_len ( b ) != 0 ) { r = SSH_ERR_INVALID_FORMAT ; goto out ; } enc -> key_len = keylen ; enc -> iv_len = ivlen ; ssh -> kex -> newkeys [ mode ] = newkey ; newkey = NULL ; r = 0 ; out : free ( newkey ) ; sshbuf_free ( b ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> comp -> type <S2SV_ModEnd> ) ) !=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12877\n\n```\nCWE-416 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; register Quantum * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } quantum_info = ( QuantumInfo * ) NULL ; clone_info = ( ImageInfo * ) NULL ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image2 = ReadMATImageV4 ( image_info , image , exception ) ; if ( image2 == NULL ) goto MATLAB_KO ; image = image2 ; goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) { MATLAB_KO : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; if ( ( MagickSizeType ) ( MATLAB_HDR . ObjectSize + filepos ) > GetBlobSize ( image ) ) goto MATLAB_KO ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; clone_info = CloneImageInfo ( image_info ) ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = decompress_block ( image , & MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) { clone_info = DestroyImageInfo ( clone_info ) ; continue ; } MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; ( void ) ReadBlobXXXLong ( image2 ) ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; default : if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( unsigned long ) ldblk * MATLAB_HDR . SizeY > MATLAB_HDR . ObjectSize ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { image -> type = GrayscaleType ; SetImageColorspace ( image , GRAYColorspace , exception ) ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) { if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; return ( DestroyImageList ( image ) ) ; } quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( image , q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( image , ( double * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( image , ( float * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image , exception ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( ( image2 != NULL ) && ( image2 != image ) ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; } RelinquishMagickMemory ( BImgBuff ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; END_OF_READING : <S2SV_StartBug> if ( clone_info ) <S2SV_EndBug> clone_info = DestroyImageInfo ( clone_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; <S2SV_StartBug> DeleteImageFromList ( & tmp ) ; <S2SV_EndBug> } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) else if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; END_OF_READING : <S2SV_ModEnd> CloseBlob ( image <S2SV_ModStart> -> previous ; if ( tmp == image2 ) image2 = ( Image * ) NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static struct nfs4_state * nfs4_try_open_cached ( struct nfs4_opendata * opendata ) { struct nfs4_state * state = opendata -> state ; struct nfs_inode * nfsi = NFS_I ( state -> inode ) ; struct nfs_delegation * delegation ; <S2SV_StartBug> int open_mode = opendata -> o_arg . open_flags & ( FMODE_READ | FMODE_WRITE | O_EXCL ) ; <S2SV_EndBug> nfs4_stateid stateid ; int ret = - EAGAIN ; for ( ; ; ) { <S2SV_StartBug> if ( can_open_cached ( state , open_mode ) ) { <S2SV_EndBug> spin_lock ( & state -> owner -> so_lock ) ; <S2SV_StartBug> if ( can_open_cached ( state , open_mode ) ) { <S2SV_EndBug> <S2SV_StartBug> update_open_stateflags ( state , open_mode ) ; <S2SV_EndBug> spin_unlock ( & state -> owner -> so_lock ) ; goto out_return_state ; } spin_unlock ( & state -> owner -> so_lock ) ; } rcu_read_lock ( ) ; delegation = rcu_dereference ( nfsi -> delegation ) ; if ( delegation == NULL || <S2SV_StartBug> ! can_open_delegated ( delegation , open_mode ) ) { <S2SV_EndBug> rcu_read_unlock ( ) ; break ; } memcpy ( stateid . data , delegation -> stateid . data , sizeof ( stateid . data ) ) ; rcu_read_unlock ( ) ; ret = nfs_may_open ( state -> inode , state -> owner -> so_cred , open_mode ) ; if ( ret != 0 ) goto out ; ret = - EAGAIN ; <S2SV_StartBug> if ( update_open_stateid ( state , NULL , & stateid , open_mode ) ) <S2SV_EndBug> goto out_return_state ; } out : return ERR_PTR ( ret ) ; out_return_state : atomic_inc ( & state -> count ) ; return state ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . open_flags & O_EXCL ; fmode_t fmode = opendata -> o_arg . fmode <S2SV_ModEnd> ; nfs4_stateid stateid <S2SV_ModStart> ( state , fmode , <S2SV_ModStart> ( state , fmode , <S2SV_ModStart> ( state , fmode <S2SV_ModEnd> ) ; spin_unlock <S2SV_ModStart> ( delegation , fmode <S2SV_ModEnd> ) ) { <S2SV_ModStart> & stateid , fmode <S2SV_ModEnd> ) ) goto\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6376\n\n```\nCWE-189 static void recalculate_apic_map ( struct kvm * kvm ) { struct kvm_apic_map * new , * old = NULL ; struct kvm_vcpu * vcpu ; int i ; new = kzalloc ( sizeof ( struct kvm_apic_map ) , GFP_KERNEL ) ; mutex_lock ( & kvm -> arch . apic_map_lock ) ; if ( ! new ) goto out ; new -> ldr_bits = 8 ; new -> cid_shift = 8 ; new -> cid_mask = 0 ; new -> lid_mask = 0xff ; kvm_for_each_vcpu ( i , vcpu , kvm ) { struct kvm_lapic * apic = vcpu -> arch . apic ; u16 cid , lid ; u32 ldr ; if ( ! kvm_apic_present ( vcpu ) ) continue ; if ( apic_x2apic_mode ( apic ) ) { new -> ldr_bits = 32 ; new -> cid_shift = 16 ; <S2SV_StartBug> new -> cid_mask = new -> lid_mask = 0xffff ; <S2SV_EndBug> } else if ( kvm_apic_sw_enabled ( apic ) && ! new -> cid_mask && kvm_apic_get_reg ( apic , APIC_DFR ) == APIC_DFR_CLUSTER ) { new -> cid_shift = 4 ; new -> cid_mask = 0xf ; new -> lid_mask = 0xf ; } new -> phys_map [ kvm_apic_id ( apic ) ] = apic ; ldr = kvm_apic_get_reg ( apic , APIC_LDR ) ; cid = apic_cluster_id ( new , ldr ) ; lid = apic_logical_id ( new , ldr ) ; if ( lid ) new -> logical_map [ cid ] [ ffs ( lid ) - 1 ] = apic ; } out : old = rcu_dereference_protected ( kvm -> arch . apic_map , lockdep_is_held ( & kvm -> arch . apic_map_lock ) ) ; rcu_assign_pointer ( kvm -> arch . apic_map , new ) ; mutex_unlock ( & kvm -> arch . apic_map_lock ) ; if ( old ) kfree_rcu ( old , rcu ) ; kvm_vcpu_request_scan_ioapic ( kvm ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> cid_mask = ( 1 << KVM_X2APIC_CID_BITS ) - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9584\n\n```\nCWE-20 static int parse_rock_ridge_inode_internal ( struct iso_directory_record * de , struct inode * inode , int flags ) { int symlink_len = 0 ; int cnt , sig ; unsigned int reloc_block ; struct inode * reloc ; struct rock_ridge * rr ; int rootflag ; struct rock_state rs ; int ret = 0 ; if ( ! ISOFS_SB ( inode -> i_sb ) -> s_rock ) return 0 ; init_rock_state ( & rs , inode ) ; setup_rock_ridge ( de , inode , & rs ) ; if ( flags & RR_REGARD_XA ) { rs . chr += 14 ; rs . len -= 14 ; if ( rs . len < 0 ) rs . len = 0 ; } repeat : while ( rs . len > 2 ) { rr = ( struct rock_ridge * ) rs . chr ; if ( rr -> len < 3 ) goto out ; sig = isonum_721 ( rs . chr ) ; if ( rock_check_overflow ( & rs , sig ) ) goto eio ; rs . chr += rr -> len ; rs . len -= rr -> len ; if ( rs . len < 0 ) goto out ; switch ( sig ) { # ifndef CONFIG_ZISOFS case SIG ( 'R' , 'R' ) : if ( ( rr -> u . RR . flags [ 0 ] & ( RR_PX | RR_TF | RR_SL | RR_CL ) ) == 0 ) goto out ; break ; # endif case SIG ( 'S' , 'P' ) : if ( check_sp ( rr , inode ) ) goto out ; break ; case SIG ( 'C' , 'E' ) : rs . cont_extent = isonum_733 ( rr -> u . CE . extent ) ; rs . cont_offset = isonum_733 ( rr -> u . CE . offset ) ; rs . cont_size = isonum_733 ( rr -> u . CE . size ) ; break ; case SIG ( 'E' , 'R' ) : <S2SV_StartBug> ISOFS_SB ( inode -> i_sb ) -> s_rock = 1 ; <S2SV_EndBug> printk ( KERN_DEBUG \"ISO<S2SV_blank>9660<S2SV_blank>Extensions:<S2SV_blank>\" ) ; { int p ; for ( p = 0 ; p < rr -> u . ER . len_id ; p ++ ) printk ( \"%c\" , rr -> u . ER . data [ p ] ) ; } printk ( \"\\\\n\" ) ; break ; case SIG ( 'P' , 'X' ) : inode -> i_mode = isonum_733 ( rr -> u . PX . mode ) ; set_nlink ( inode , isonum_733 ( rr -> u . PX . n_links ) ) ; i_uid_write ( inode , isonum_733 ( rr -> u . PX . uid ) ) ; i_gid_write ( inode , isonum_733 ( rr -> u . PX . gid ) ) ; break ; case SIG ( 'P' , 'N' ) : { int high , low ; high = isonum_733 ( rr -> u . PN . dev_high ) ; low = isonum_733 ( rr -> u . PN . dev_low ) ; if ( ( low & ~ 0xff ) && high == 0 ) { inode -> i_rdev = MKDEV ( low >> 8 , low & 0xff ) ; } else { inode -> i_rdev = MKDEV ( high , low ) ; } } break ; case SIG ( 'T' , 'F' ) : cnt = 0 ; if ( rr -> u . TF . flags & TF_CREATE ) { inode -> i_ctime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_ctime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_MODIFY ) { inode -> i_mtime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_mtime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_ACCESS ) { inode -> i_atime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_atime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_ATTRIBUTES ) { inode -> i_ctime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_ctime . tv_nsec = 0 ; } break ; case SIG ( 'S' , 'L' ) : { int slen ; struct SL_component * slp ; struct SL_component * oldslp ; slen = rr -> len - 5 ; slp = & rr -> u . SL . link ; inode -> i_size = symlink_len ; while ( slen > 1 ) { rootflag = 0 ; switch ( slp -> flags & ~ 1 ) { case 0 : inode -> i_size += slp -> len ; break ; case 2 : inode -> i_size += 1 ; break ; case 4 : inode -> i_size += 2 ; break ; case 8 : rootflag = 1 ; inode -> i_size += 1 ; break ; default : printk ( \"Symlink<S2SV_blank>component<S2SV_blank>flag<S2SV_blank>\" \"not<S2SV_blank>implemented\\\\n\" ) ; } slen -= slp -> len + 2 ; oldslp = slp ; slp = ( struct SL_component * ) ( ( ( char * ) slp ) + slp -> len + 2 ) ; if ( slen < 2 ) { if ( ( ( rr -> u . SL . flags & 1 ) != 0 ) && ( ( oldslp -> flags & 1 ) == 0 ) ) inode -> i_size += 1 ; break ; } if ( ! rootflag && ( oldslp -> flags & 1 ) == 0 ) inode -> i_size += 1 ; } } symlink_len = inode -> i_size ; break ; case SIG ( 'R' , 'E' ) : printk ( KERN_WARNING \"Attempt<S2SV_blank>to<S2SV_blank>read<S2SV_blank>inode<S2SV_blank>for<S2SV_blank>\" \"relocated<S2SV_blank>directory\\\\n\" ) ; goto out ; case SIG ( 'C' , 'L' ) : if ( flags & RR_RELOC_DE ) { printk ( KERN_ERR \"ISOFS:<S2SV_blank>Recursive<S2SV_blank>directory<S2SV_blank>relocation<S2SV_blank>\" \"is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; goto eio ; } reloc_block = isonum_733 ( rr -> u . CL . location ) ; if ( reloc_block == ISOFS_I ( inode ) -> i_iget5_block && ISOFS_I ( inode ) -> i_iget5_offset == 0 ) { printk ( KERN_ERR \"ISOFS:<S2SV_blank>Directory<S2SV_blank>relocation<S2SV_blank>points<S2SV_blank>to<S2SV_blank>\" \"itself\\\\n\" ) ; goto eio ; } ISOFS_I ( inode ) -> i_first_extent = reloc_block ; reloc = isofs_iget_reloc ( inode -> i_sb , reloc_block , 0 ) ; if ( IS_ERR ( reloc ) ) { ret = PTR_ERR ( reloc ) ; goto out ; } inode -> i_mode = reloc -> i_mode ; set_nlink ( inode , reloc -> i_nlink ) ; inode -> i_uid = reloc -> i_uid ; inode -> i_gid = reloc -> i_gid ; inode -> i_rdev = reloc -> i_rdev ; inode -> i_size = reloc -> i_size ; inode -> i_blocks = reloc -> i_blocks ; inode -> i_atime = reloc -> i_atime ; inode -> i_ctime = reloc -> i_ctime ; inode -> i_mtime = reloc -> i_mtime ; iput ( reloc ) ; break ; # ifdef CONFIG_ZISOFS case SIG ( 'Z' , 'F' ) : { int algo ; if ( ISOFS_SB ( inode -> i_sb ) -> s_nocompress ) break ; algo = isonum_721 ( rr -> u . ZF . algorithm ) ; if ( algo == SIG ( 'p' , 'z' ) ) { int block_shift = isonum_711 ( & rr -> u . ZF . parms [ 1 ] ) ; if ( block_shift > 17 ) { printk ( KERN_WARNING \"isofs:<S2SV_blank>\" \"Can\\'t<S2SV_blank>handle<S2SV_blank>ZF<S2SV_blank>block<S2SV_blank>\" \"size<S2SV_blank>of<S2SV_blank>2^%d\\\\n\" , block_shift ) ; } else { ISOFS_I ( inode ) -> i_file_format = isofs_file_compressed ; ISOFS_I ( inode ) -> i_format_parm [ 0 ] = isonum_711 ( & rr -> u . ZF . parms [ 0 ] ) ; ISOFS_I ( inode ) -> i_format_parm [ 1 ] = isonum_711 ( & rr -> u . ZF . parms [ 1 ] ) ; inode -> i_size = isonum_733 ( rr -> u . ZF . real_size ) ; } } else { printk ( KERN_WARNING \"isofs:<S2SV_blank>Unknown<S2SV_blank>ZF<S2SV_blank>compression<S2SV_blank>\" \"algorithm:<S2SV_blank>%c%c\\\\n\" , rr -> u . ZF . algorithm [ 0 ] , rr -> u . ZF . algorithm [ 1 ] ) ; } break ; } # endif default : break ; } } ret = rock_continue ( & rs ) ; if ( ret == 0 ) goto repeat ; if ( ret == 1 ) ret = 0 ; out : kfree ( rs . buffer ) ; return ret ; eio : ret = - EIO ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 'R' ) : if ( rr -> u . ER . len_id + offsetof ( struct rock_ridge , u . ER . data ) > rr -> len ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10675\n\n```\nCWE-416 static long do_get_mempolicy ( int * policy , nodemask_t * nmask , unsigned long addr , unsigned long flags ) { int err ; struct mm_struct * mm = current -> mm ; struct vm_area_struct * vma = NULL ; struct mempolicy * pol = current -> mempolicy ; if ( flags & ~ ( unsigned long ) ( MPOL_F_NODE | MPOL_F_ADDR | MPOL_F_MEMS_ALLOWED ) ) return - EINVAL ; if ( flags & MPOL_F_MEMS_ALLOWED ) { if ( flags & ( MPOL_F_NODE | MPOL_F_ADDR ) ) return - EINVAL ; * policy = 0 ; task_lock ( current ) ; * nmask = cpuset_current_mems_allowed ; task_unlock ( current ) ; return 0 ; } if ( flags & MPOL_F_ADDR ) { down_read ( & mm -> mmap_sem ) ; vma = find_vma_intersection ( mm , addr , addr + 1 ) ; if ( ! vma ) { up_read ( & mm -> mmap_sem ) ; return - EFAULT ; } if ( vma -> vm_ops && vma -> vm_ops -> get_policy ) pol = vma -> vm_ops -> get_policy ( vma , addr ) ; else pol = vma -> vm_policy ; } else if ( addr ) return - EINVAL ; if ( ! pol ) pol = & default_policy ; if ( flags & MPOL_F_NODE ) { if ( flags & MPOL_F_ADDR ) { err = lookup_node ( addr ) ; if ( err < 0 ) goto out ; * policy = err ; } else if ( pol == current -> mempolicy && pol -> mode == MPOL_INTERLEAVE ) { * policy = next_node_in ( current -> il_prev , pol -> v . nodes ) ; } else { err = - EINVAL ; goto out ; } } else { * policy = pol == & default_policy ? MPOL_DEFAULT : pol -> mode ; * policy |= ( pol -> flags & MPOL_MODE_FLAGS ) ; } <S2SV_StartBug> if ( vma ) { <S2SV_EndBug> up_read ( & current -> mm -> mmap_sem ) ; vma = NULL ; } err = 0 ; if ( nmask ) { if ( mpol_store_user_nodemask ( pol ) ) { * nmask = pol -> w . user_nodemask ; } else { task_lock ( current ) ; get_policy_nodemask ( pol , nmask ) ; task_unlock ( current ) ; } } out : mpol_cond_put ( pol ) ; if ( vma ) up_read ( & current -> mm -> mmap_sem ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } <S2SV_ModEnd> err = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12985\n\n```\nCWE-125 int mobility_print ( netdissect_options * ndo , const u_char * bp , const u_char * bp2 _U_ ) { const struct ip6_mobility * mh ; const u_char * ep ; unsigned mhlen , hlen ; uint8_t type ; mh = ( const struct ip6_mobility * ) bp ; ep = ndo -> ndo_snapend ; if ( ! ND_TTEST ( mh -> ip6m_len ) ) { mhlen = ep - bp ; goto trunc ; } mhlen = ( mh -> ip6m_len + 1 ) << 3 ; ND_TCHECK ( mh -> ip6m_type ) ; type = mh -> ip6m_type ; if ( type <= IP6M_MAX && mhlen < ip6m_hdrlen [ type ] ) { ND_PRINT ( ( ndo , \"(header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>for<S2SV_blank>type<S2SV_blank>%u)\" , mhlen , type ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"mobility:<S2SV_blank>%s\" , tok2str ( ip6m_str , \"type-#%u\" , type ) ) ) ; switch ( type ) { case IP6M_BINDING_REQUEST : hlen = IP6M_MINLEN ; break ; case IP6M_HOME_TEST_INIT : case IP6M_CAREOF_TEST_INIT : hlen = IP6M_MINLEN ; if ( ndo -> ndo_vflag ) { ND_TCHECK2 ( * mh , hlen + 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Init<S2SV_blank>Cookie=%08x:%08x\" , type == IP6M_HOME_TEST_INIT ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; break ; case IP6M_HOME_TEST : case IP6M_CAREOF_TEST : ND_TCHECK ( mh -> ip6m_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>nonce<S2SV_blank>id=0x%x\" , EXTRACT_16BITS ( & mh -> ip6m_data16 [ 0 ] ) ) ) ; hlen = IP6M_MINLEN ; if ( ndo -> ndo_vflag ) { ND_TCHECK2 ( * mh , hlen + 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Init<S2SV_blank>Cookie=%08x:%08x\" , type == IP6M_HOME_TEST ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; if ( ndo -> ndo_vflag ) { ND_TCHECK2 ( * mh , hlen + 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>Keygen<S2SV_blank>Token=%08x:%08x\" , type == IP6M_HOME_TEST ? \"Home\" : \"Care-of\" , EXTRACT_32BITS ( & bp [ hlen ] ) , EXTRACT_32BITS ( & bp [ hlen + 4 ] ) ) ) ; } hlen += 8 ; break ; case IP6M_BINDING_UPDATE : ND_TCHECK ( mh -> ip6m_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>seq#=%u\" , EXTRACT_16BITS ( & mh -> ip6m_data16 [ 0 ] ) ) ) ; hlen = IP6M_MINLEN ; ND_TCHECK2 ( * mh , hlen + 1 ) ; if ( bp [ hlen ] & 0xf0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( bp [ hlen ] & 0x80 ) ND_PRINT ( ( ndo , \"A\" ) ) ; if ( bp [ hlen ] & 0x40 ) ND_PRINT ( ( ndo , \"H\" ) ) ; if ( bp [ hlen ] & 0x20 ) ND_PRINT ( ( ndo , \"L\" ) ) ; if ( bp [ hlen ] & 0x10 ) ND_PRINT ( ( ndo , \"K\" ) ) ; hlen += 1 ; hlen += 1 ; ND_TCHECK2 ( * mh , hlen + 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>lifetime=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) << 2 ) ) ; hlen += 2 ; break ; case IP6M_BINDING_ACK : ND_TCHECK ( mh -> ip6m_data8 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>status=%u\" , mh -> ip6m_data8 [ 0 ] ) ) ; if ( mh -> ip6m_data8 [ 1 ] & 0x80 ) ND_PRINT ( ( ndo , \"<S2SV_blank>K\" ) ) ; hlen = IP6M_MINLEN ; ND_TCHECK2 ( * mh , hlen + 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>seq#=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) ) ) ; hlen += 2 ; ND_TCHECK2 ( * mh , hlen + 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>lifetime=%u\" , EXTRACT_16BITS ( & bp [ hlen ] ) << 2 ) ) ; hlen += 2 ; break ; case IP6M_BINDING_ERROR : ND_TCHECK ( mh -> ip6m_data8 [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>status=%u\" , mh -> ip6m_data8 [ 0 ] ) ) ; hlen = IP6M_MINLEN ; ND_TCHECK2 ( * mh , hlen + 16 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>homeaddr<S2SV_blank>%s\" , ip6addr_string ( ndo , & bp [ hlen ] ) ) ) ; hlen += 16 ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>len=%u\" , mh -> ip6m_len ) ) ; return ( mhlen ) ; break ; } if ( ndo -> ndo_vflag ) if ( mobility_opt_print ( ndo , & bp [ hlen ] , mhlen - hlen ) ) goto trunc ; return ( mhlen ) ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_StartBug> return ( mhlen ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return ( - 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8787\n\n```\nCWE-787 static BOOL gdi_Bitmap_Decompress ( rdpContext * context , rdpBitmap * bitmap , const BYTE * pSrcData , UINT32 DstWidth , UINT32 DstHeight , UINT32 bpp , UINT32 length , BOOL compressed , UINT32 codecId ) { UINT32 SrcSize = length ; rdpGdi * gdi = context -> gdi ; <S2SV_StartBug> bitmap -> compressed = FALSE ; <S2SV_EndBug> bitmap -> format = gdi -> dstFormat ; <S2SV_StartBug> bitmap -> length = DstWidth * DstHeight * GetBytesPerPixel ( bitmap -> format ) ; <S2SV_EndBug> bitmap -> data = ( BYTE * ) _aligned_malloc ( bitmap -> length , 16 ) ; if ( ! bitmap -> data ) return FALSE ; if ( compressed ) { if ( bpp < 32 ) { if ( ! interleaved_decompress ( context -> codecs -> interleaved , pSrcData , SrcSize , DstWidth , DstHeight , bpp , bitmap -> data , bitmap -> format , 0 , 0 , 0 , DstWidth , DstHeight , & gdi -> palette ) ) return FALSE ; } else { if ( ! planar_decompress ( context -> codecs -> planar , pSrcData , SrcSize , DstWidth , DstHeight , bitmap -> data , bitmap -> format , 0 , 0 , 0 , DstWidth , DstHeight , TRUE ) ) return FALSE ; } } else { const UINT32 SrcFormat = gdi_get_pixel_format ( bpp ) ; const size_t sbpp = GetBytesPerPixel ( SrcFormat ) ; const size_t dbpp = GetBytesPerPixel ( bitmap -> format ) ; if ( ( sbpp == 0 ) || ( dbpp == 0 ) ) return FALSE ; else { const size_t dstSize = SrcSize * dbpp / sbpp ; if ( dstSize < bitmap -> length ) return FALSE ; } if ( ! freerdp_image_copy ( bitmap -> data , bitmap -> format , 0 , 0 , 0 , DstWidth , DstHeight , pSrcData , SrcFormat , 0 , 0 , 0 , & gdi -> palette , FREERDP_FLIP_VERTICAL ) ) return FALSE ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> gdi ; UINT32 size = DstWidth * DstHeight ; <S2SV_ModStart> -> dstFormat ; if ( ( GetBytesPerPixel ( bitmap -> format ) == 0 ) || ( DstWidth == 0 ) || ( DstHeight == 0 ) || ( DstWidth > UINT32_MAX / DstHeight ) || ( size > ( UINT32_MAX / GetBytesPerPixel ( bitmap -> format ) ) ) ) return FALSE ; size *= GetBytesPerPixel ( bitmap -> format ) ; <S2SV_ModStart> -> length = size <S2SV_ModEnd> ; bitmap ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int rc_pick_q_and_bounds_one_pass_vbr ( const VP9_COMP * cpi , int * bottom_index , int * top_index ) { const VP9_COMMON * const cm = & cpi -> common ; const RATE_CONTROL * const rc = & cpi -> rc ; <S2SV_StartBug> const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> <S2SV_StartBug> int active_best_quality ; <S2SV_EndBug> int active_worst_quality = calc_active_worst_quality_one_pass_vbr ( cpi ) ; int q ; <S2SV_StartBug> if ( frame_is_intra_only ( cm ) ) { <S2SV_EndBug> <S2SV_StartBug> active_best_quality = rc -> best_quality ; <S2SV_EndBug> # if ! CONFIG_MULTIPLE_ARF if ( rc -> this_key_frame_forced ) { int qindex = rc -> last_boosted_qindex ; <S2SV_StartBug> double last_boosted_q = vp9_convert_qindex_to_q ( qindex ) ; <S2SV_EndBug> int delta_qindex = vp9_compute_qdelta ( rc , last_boosted_q , <S2SV_StartBug> last_boosted_q * 0.75 ) ; <S2SV_EndBug> active_best_quality = MAX ( qindex + delta_qindex , rc -> best_quality ) ; <S2SV_StartBug> } else if ( cm -> current_video_frame > 0 ) { <S2SV_EndBug> double q_adj_factor = 1.0 ; double q_val ; <S2SV_StartBug> active_best_quality = get_active_quality ( rc -> avg_frame_qindex [ KEY_FRAME ] , <S2SV_EndBug> <S2SV_StartBug> rc -> kf_boost , <S2SV_EndBug> kf_low , kf_high , kf_low_motion_minq , kf_high_motion_minq ) ; if ( ( cm -> width * cm -> height ) <= ( 352 * 288 ) ) { q_adj_factor -= 0.25 ; } <S2SV_StartBug> q_val = vp9_convert_qindex_to_q ( active_best_quality ) ; <S2SV_EndBug> active_best_quality += vp9_compute_qdelta ( rc , q_val , <S2SV_StartBug> q_val * q_adj_factor ) ; <S2SV_EndBug> } # else double current_q ; current_q = vp9_convert_qindex_to_q ( active_worst_quality ) ; active_best_quality = active_worst_quality + vp9_compute_qdelta ( rc , current_q , current_q * 0.3 ) ; # endif } else if ( ! rc -> is_src_frame_alt_ref && ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) ) { if ( rc -> frames_since_key > 1 && rc -> avg_frame_qindex [ INTER_FRAME ] < active_worst_quality ) { q = rc -> avg_frame_qindex [ INTER_FRAME ] ; } else { q = rc -> avg_frame_qindex [ KEY_FRAME ] ; } <S2SV_StartBug> if ( oxcf -> end_usage == USAGE_CONSTRAINED_QUALITY ) { <S2SV_EndBug> <S2SV_StartBug> if ( q < cpi -> cq_target_quality ) <S2SV_EndBug> q = cpi -> cq_target_quality ; if ( rc -> frames_since_key > 1 ) { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , afq_low_motion_minq , afq_high_motion_minq ) ; } else { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , gf_low_motion_minq , gf_high_motion_minq ) ; } active_best_quality = active_best_quality * 15 / 16 ; <S2SV_StartBug> } else if ( oxcf -> end_usage == USAGE_CONSTANT_QUALITY ) { <S2SV_EndBug> if ( ! cpi -> refresh_alt_ref_frame ) { <S2SV_StartBug> active_best_quality = cpi -> cq_target_quality ; <S2SV_EndBug> } else { if ( rc -> frames_since_key > 1 ) { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , afq_low_motion_minq , afq_high_motion_minq ) ; } else { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , gf_low_motion_minq , gf_high_motion_minq ) ; } } } else { active_best_quality = get_active_quality ( q , rc -> gfu_boost , gf_low , gf_high , gf_low_motion_minq , gf_high_motion_minq ) ; } } else { <S2SV_StartBug> if ( oxcf -> end_usage == USAGE_CONSTANT_QUALITY ) { <S2SV_EndBug> active_best_quality = cpi -> cq_target_quality ; } else { if ( cm -> current_video_frame > 1 ) active_best_quality = inter_minq [ rc -> avg_frame_qindex [ INTER_FRAME ] ] ; else active_best_quality = inter_minq [ rc -> avg_frame_qindex [ KEY_FRAME ] ] ; <S2SV_StartBug> if ( ( oxcf -> end_usage == USAGE_CONSTRAINED_QUALITY ) && <S2SV_EndBug> <S2SV_StartBug> ( active_best_quality < cpi -> cq_target_quality ) ) { <S2SV_EndBug> if ( rc -> rolling_actual_bits < rc -> min_frame_bandwidth ) active_best_quality = oxcf -> cq_level ; else active_best_quality = cpi -> cq_target_quality ; } } } active_best_quality = clamp ( active_best_quality , rc -> best_quality , rc -> worst_quality ) ; active_worst_quality = clamp ( active_worst_quality , active_best_quality , rc -> worst_quality ) ; * top_index = active_worst_quality ; * bottom_index = active_best_quality ; <S2SV_StartBug> # if LIMIT_QRANGE_FOR_ALTREF_AND_KEY <S2SV_EndBug> <S2SV_StartBug> if ( cm -> frame_type == KEY_FRAME && ! rc -> this_key_frame_forced ) { <S2SV_EndBug> if ( ! ( cm -> current_video_frame == 0 ) ) <S2SV_StartBug> * top_index = ( active_worst_quality + active_best_quality * 3 ) / 4 ; <S2SV_EndBug> } else if ( ! rc -> is_src_frame_alt_ref && ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) ) { * top_index = ( active_worst_quality + active_best_quality ) / 2 ; } # endif <S2SV_StartBug> if ( oxcf -> end_usage == USAGE_CONSTANT_QUALITY ) { <S2SV_EndBug> q = active_best_quality ; } else if ( ( cm -> frame_type == KEY_FRAME ) && rc -> this_key_frame_forced ) { q = rc -> last_boosted_qindex ; } else { q = vp9_rc_regulate_q ( cpi , rc -> this_frame_target , active_best_quality , active_worst_quality ) ; if ( q > * top_index ) { if ( rc -> this_frame_target >= rc -> max_frame_bandwidth ) * top_index = q ; else q = * top_index ; } } <S2SV_StartBug> # if CONFIG_MULTIPLE_ARF <S2SV_EndBug> if ( cpi -> multi_arf_enabled && ( cm -> frame_type != KEY_FRAME ) && cpi -> oxcf . end_usage != USAGE_CONSTANT_QUALITY ) { double new_q ; double current_q = vp9_convert_qindex_to_q ( active_worst_quality ) ; int level = cpi -> this_frame_weight ; assert ( level >= 0 ) ; new_q = current_q * ( 1.0 - ( 0.2 * ( cpi -> max_arf_level - level ) ) ) ; q = active_worst_quality + vp9_compute_qdelta ( rc , current_q , new_q ) ; * bottom_index = q ; * top_index = q ; printf ( \"frame:%d<S2SV_blank>q:%d\\\\n\" , cm -> current_video_frame , q ) ; } # endif assert ( * top_index <= rc -> worst_quality && * top_index >= rc -> best_quality ) ; assert ( * bottom_index <= rc -> worst_quality && * bottom_index >= rc -> best_quality ) ; assert ( q <= rc -> worst_quality && q >= rc -> best_quality ) ; return q ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc ; const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> -> oxcf ; const int cq_level = get_active_cq_level ( rc , oxcf ) ; <S2SV_ModStart> int q ; int * inter_minq ; ASSIGN_MINQ_TABLE ( cm -> bit_depth , inter_minq ) ; <S2SV_ModStart> ) ) { <S2SV_ModEnd> if ( rc <S2SV_ModStart> vp9_convert_qindex_to_q ( qindex , cm -> bit_depth <S2SV_ModStart> last_boosted_q * 0.75 , cm -> bit_depth <S2SV_ModStart> ; } else <S2SV_ModEnd> { double q_adj_factor <S2SV_ModStart> ; active_best_quality = get_kf_active_quality ( rc , <S2SV_ModEnd> rc -> avg_frame_qindex <S2SV_ModStart> KEY_FRAME ] , cm -> bit_depth <S2SV_ModEnd> ) ; if <S2SV_ModStart> vp9_convert_qindex_to_q ( active_best_quality , cm -> bit_depth <S2SV_ModStart> q_val * q_adj_factor , cm -> bit_depth ) ; } <S2SV_ModEnd> } else if <S2SV_ModStart> ( oxcf -> rc_mode == VPX_CQ <S2SV_ModEnd> ) { if <S2SV_ModStart> ( q < cq_level ) q = cq_level ; active_best_quality = get_gf_active_quality ( rc , q , cm -> bit_depth ) ; <S2SV_ModEnd> active_best_quality = active_best_quality <S2SV_ModStart> ( oxcf -> rc_mode == VPX_Q <S2SV_ModEnd> ) { if <S2SV_ModStart> { active_best_quality = cq_level ; } else { active_best_quality = get_gf_active_quality ( rc , q , cm -> bit_depth ) ; } } else { active_best_quality = get_gf_active_quality ( rc , q , cm -> bit_depth <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( oxcf -> rc_mode == VPX_Q ) { active_best_quality = cq_level <S2SV_ModEnd> ; } else <S2SV_ModStart> ( oxcf -> rc_mode == VPX_CQ <S2SV_ModEnd> ) && ( <S2SV_ModStart> ( active_best_quality < cq_level ) ) { active_best_quality = cq_level <S2SV_ModEnd> ; } } <S2SV_ModStart> # if LIMIT_QRANGE_FOR_ALTREF_AND_KEY { int qdelta = 0 ; vpx_clear_system_state ( ) ; <S2SV_ModStart> rc -> this_key_frame_forced && <S2SV_ModEnd> ! ( cm <S2SV_ModStart> 0 ) ) { qdelta = vp9_compute_qdelta_by_rate ( & cpi -> rc , cm -> frame_type , active_worst_quality , 2.0 , cm -> bit_depth ) ; } else if ( ! rc -> is_src_frame_alt_ref && ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) ) { qdelta = vp9_compute_qdelta_by_rate ( & cpi -> rc , cm -> frame_type , active_worst_quality , 1.75 , cm -> bit_depth ) ; } * top_index = active_worst_quality + qdelta ; * top_index = ( * top_index > * bottom_index ) ? * top_index : * bottom_index <S2SV_ModEnd> ; } # <S2SV_ModStart> ( oxcf -> rc_mode == VPX_Q <S2SV_ModEnd> ) { q <S2SV_ModStart> ; } } <S2SV_ModEnd> assert ( *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-119 void mp_encode_lua_table_as_array ( lua_State * L , mp_buf * buf , int level ) { # if LUA_VERSION_NUM < 502 size_t len = lua_objlen ( L , - 1 ) , j ; # else size_t len = lua_rawlen ( L , - 1 ) , j ; # endif mp_encode_array ( L , buf , len ) ; <S2SV_StartBug> for ( j = 1 ; j <= len ; j ++ ) { <S2SV_EndBug> lua_pushnumber ( L , j ) ; lua_gettable ( L , - 2 ) ; mp_encode_lua_type ( L , buf , level + 1 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) ; luaL_checkstack ( L , 1 , \"in<S2SV_blank>function<S2SV_blank>mp_encode_lua_table_as_array\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5359\n\n```\nCWE-119 static guint32 parse_wbxml_tag ( proto_tree * tree , tvbuff_t * tvb , guint32 offset , guint32 str_tbl , guint8 * level , guint8 * codepage_stag , guint8 * codepage_attr ) { guint32 tvb_len = tvb_reported_length ( tvb ) ; <S2SV_StartBug> guint32 off = offset ; <S2SV_EndBug> guint32 len ; guint str_len ; guint32 ent ; guint32 idx ; guint8 peek ; guint32 tag_len ; guint8 tag_save_known = 0 ; guint8 tag_new_known = 0 ; const char * tag_save_literal ; const char * tag_new_literal ; char * tag_save_buf = NULL ; char * tag_new_buf = NULL ; guint8 parsing_tag_content = FALSE ; tag_save_literal = NULL ; <S2SV_StartBug> DebugLog ( ( \"parse_wbxml_tag<S2SV_blank>(level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>offset<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , * level , offset ) ) ; <S2SV_EndBug> while ( off < tvb_len ) { peek = tvb_get_guint8 ( tvb , off ) ; DebugLog ( ( \"STAG:<S2SV_blank>(top<S2SV_blank>of<S2SV_blank>while)<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%3u,<S2SV_blank>peek<S2SV_blank>=<S2SV_blank>0x%02X,<S2SV_blank>off<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>tvb_len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , * level , peek , off , tvb_len ) ) ; if ( ( peek & 0x3F ) < 4 ) switch ( peek ) { case 0x00 : * codepage_stag = tvb_get_guint8 ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 2 , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>-->%3d<S2SV_blank>\" \"|<S2SV_blank>SWITCH_PAGE<S2SV_blank>(Tag<S2SV_blank>code<S2SV_blank>page)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|\" , * codepage_stag ) ; off += 2 ; break ; case 0x01 : if ( tag_save_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(Known<S2SV_blank>Tag<S2SV_blank>0x%02X)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s</%s>\" , * level , * codepage_stag , tag_save_known , Indent ( * level ) , tag_save_literal ) ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s</%s>\" , * level , * codepage_stag , Indent ( * level ) , tag_save_literal ? tag_save_literal : \"\" ) ; } ( * level ) -- ; off ++ ; DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , * level , off - offset ) ) ; return ( off - offset ) ; case 0x02 : ent = tvb_get_guintvar ( tvb , off + 1 , & len ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>ENTITY<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s\\'&#%u;\\'\" , * level , * codepage_stag , Indent ( * level ) , ent ) ; off += 1 + len ; break ; case 0x03 : len = tvb_strsize ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>STR_I<S2SV_blank>(Inline<S2SV_blank>string)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s\\\\\\'%s\\\\\\'\" , * level , * codepage_stag , Indent ( * level ) , tvb_format_text ( tvb , off + 1 , len - 1 ) ) ; off += 1 + len ; break ; case 0x40 : case 0x41 : case 0x42 : len = tvb_strsize ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_I_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s(Inline<S2SV_blank>string<S2SV_blank>extension:<S2SV_blank>\\\\\\'%s\\\\\\')\" , * level , * codepage_stag , peek & 0x0f , Indent ( * level ) , tvb_format_text ( tvb , off + 1 , len - 1 ) ) ; off += 1 + len ; break ; case 0x43 : proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>PI<S2SV_blank>(XML<S2SV_blank>Processing<S2SV_blank>Instruction)<S2SV_blank>\" \"|<S2SV_blank>%s<?xml\" , * level , * codepage_stag , Indent ( * level ) ) ; len = parse_wbxml_attribute_list ( tree , tvb , off , str_tbl , * level , codepage_attr ) ; off += len ; if ( off >= tvb_len ) { DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>ThrowException:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(short<S2SV_blank>frame)\\\\n\" , * level , off - offset ) ) ; THROW ( ReportedBoundsError ) ; } proto_tree_add_text ( tree , tvb , off - 1 , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(PI)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s?>\" , * level , * codepage_stag , Indent ( * level ) ) ; break ; case 0x80 : case 0x81 : case 0x82 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_T_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s(Extension<S2SV_blank>Token,<S2SV_blank>integer<S2SV_blank>value:<S2SV_blank>%u)\" , * level , * codepage_stag , peek & 0x0f , Indent ( * level ) , idx ) ; off += 1 + len ; break ; case 0x83 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; str_len = tvb_strsize ( tvb , str_tbl + idx ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>STR_T<S2SV_blank>(Tableref<S2SV_blank>string)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s\\\\\\'%s\\\\\\'\" , * level , * codepage_stag , Indent ( * level ) , tvb_format_text ( tvb , str_tbl + idx , str_len - 1 ) ) ; off += 1 + len ; break ; case 0xC0 : case 0xC1 : case 0xC2 : proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s(Single-byte<S2SV_blank>extension)\" , * level , * codepage_stag , peek & 0x0f , Indent ( * level ) ) ; off ++ ; break ; case 0xC3 : if ( tvb_get_guint8 ( tvb , 0 ) ) { idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; proto_tree_add_text ( tree , tvb , off , 1 + len + idx , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>OPAQUE<S2SV_blank>(Opaque<S2SV_blank>data)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s(%d<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>opaque<S2SV_blank>data)\" , * level , * codepage_stag , Indent ( * level ) , idx ) ; off += 1 + len + idx ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>RESERVED_2<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Invalid<S2SV_blank>Token!)<S2SV_blank>\" \"|<S2SV_blank>WBXML<S2SV_blank>1.0<S2SV_blank>parsing<S2SV_blank>stops<S2SV_blank>here.\" , * level , * codepage_stag ) ; off = tvb_len ; DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , * level , off - offset ) ) ; return ( off - offset ) ; } break ; } else { tag_len = 0 ; if ( ( peek & 0x3F ) == 4 ) { DebugLog ( ( \"STAG:<S2SV_blank>LITERAL<S2SV_blank>tag<S2SV_blank>(peek<S2SV_blank>=<S2SV_blank>0x%02X,<S2SV_blank>off<S2SV_blank>=<S2SV_blank>%u)\" \"<S2SV_blank>-<S2SV_blank>TableRef<S2SV_blank>follows!\\\\n\" , peek , off ) ) ; idx = tvb_get_guintvar ( tvb , off + 1 , & tag_len ) ; str_len = tvb_strsize ( tvb , str_tbl + idx ) ; tag_new_literal = ( const gchar * ) tvb_get_ptr ( tvb , str_tbl + idx , str_len ) ; tag_new_known = 0 ; } else { tag_new_known = peek & 0x3F ; tag_new_buf = wmem_strdup_printf ( wmem_packet_scope ( ) , \"Tag_0x%02X\" , tag_new_known ) ; tag_new_literal = tag_new_buf ; } if ( peek & 0x40 ) { if ( parsing_tag_content ) { DebugLog ( ( \"STAG:<S2SV_blank>Tag<S2SV_blank>in<S2SV_blank>Tag<S2SV_blank>-<S2SV_blank>RECURSE!<S2SV_blank>(off<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , off ) ) ; ( * level ) ++ ; len = parse_wbxml_tag ( tree , tvb , off , str_tbl , level , codepage_stag , codepage_attr ) ; off += len ; } else { if ( ( peek & 0x3F ) == 4 ) { tag_save_literal = tag_new_literal ; tag_save_known = 0 ; } else { tag_save_known = tag_new_known ; tag_save_buf = wmem_strdup_printf ( wmem_packet_scope ( ) , \"Tag_0x%02X\" , tag_new_known ) ; tag_save_literal = tag_save_buf ; } if ( peek & 0x80 ) { if ( tag_new_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>Tag<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(AC)<S2SV_blank>\" \"|<S2SV_blank>%s<%s\" , * level , * codepage_stag , tag_new_known , Indent ( * level ) , tag_new_literal ) ; off ++ ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL_AC<S2SV_blank>(Literal<S2SV_blank>tag)<S2SV_blank><S2SV_blank><S2SV_blank>(AC)<S2SV_blank>\" \"|<S2SV_blank>%s<%s\" , * level , * codepage_stag , Indent ( * level ) , tag_new_literal ) ; off += 1 + tag_len ; } len = parse_wbxml_attribute_list ( tree , tvb , off , str_tbl , * level , codepage_attr ) ; off += len ; if ( off >= tvb_len ) { DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>ThrowException:<S2SV_blank>\" \"len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(short<S2SV_blank>frame)\\\\n\" , * level , off - offset ) ) ; THROW ( ReportedBoundsError ) ; } proto_tree_add_text ( tree , tvb , off - 1 , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(attribute<S2SV_blank>list)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s>\" , * level , * codepage_stag , Indent ( * level ) ) ; } else { if ( tag_new_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>Tag<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(.C)<S2SV_blank>\" \"|<S2SV_blank>%s<%s>\" , * level , * codepage_stag , tag_new_known , Indent ( * level ) , tag_new_literal ) ; off ++ ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL_C<S2SV_blank><S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank>(.C)<S2SV_blank>\" \"|<S2SV_blank>%s<%s>\" , * level , * codepage_stag , Indent ( * level ) , tag_new_literal ) ; off += 1 + tag_len ; } } parsing_tag_content = TRUE ; DebugLog ( ( \"Tag<S2SV_blank>in<S2SV_blank>Tag<S2SV_blank>-<S2SV_blank>No<S2SV_blank>recursion<S2SV_blank>this<S2SV_blank>time!<S2SV_blank>\" \"(off<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , off ) ) ; } } else { DebugLog ( ( \"<Tag/><S2SV_blank>in<S2SV_blank>Tag<S2SV_blank>-<S2SV_blank>No<S2SV_blank>recursion!<S2SV_blank>(off<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , off ) ) ; ( * level ) ++ ; if ( peek & 0x80 ) { if ( tag_new_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>Tag<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(A.)<S2SV_blank>\" \"|<S2SV_blank>%s<%s\" , * level , * codepage_stag , tag_new_known , Indent ( * level ) , tag_new_literal ) ; off ++ ; len = parse_wbxml_attribute_list ( tree , tvb , off , str_tbl , * level , codepage_attr ) ; off += len ; if ( off >= tvb_len ) { DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>ThrowException:<S2SV_blank>\" \"len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(short<S2SV_blank>frame)\\\\n\" , * level , off - offset ) ) ; THROW ( ReportedBoundsError ) ; } proto_tree_add_text ( tree , tvb , off - 1 , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(Known<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s/>\" , * level , * codepage_stag , Indent ( * level ) ) ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL_A<S2SV_blank><S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank>(A.)<S2SV_blank>\" \"|<S2SV_blank>%s<%s\" , * level , * codepage_stag , Indent ( * level ) , tag_new_literal ) ; off += 1 + tag_len ; len = parse_wbxml_attribute_list ( tree , tvb , off , str_tbl , * level , codepage_attr ) ; off += len ; if ( off >= tvb_len ) { DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>ThrowException:<S2SV_blank>\" \"len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(short<S2SV_blank>frame)\\\\n\" , * level , off - offset ) ) ; THROW ( ReportedBoundsError ) ; } proto_tree_add_text ( tree , tvb , off - 1 , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>END<S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%s/>\" , * level , * codepage_stag , Indent ( * level ) ) ; } } else { if ( tag_new_known ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>Tag<S2SV_blank>0x%02x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(..)<S2SV_blank>\" \"|<S2SV_blank>%s<%s<S2SV_blank>/>\" , * level , * codepage_stag , tag_new_known , Indent ( * level ) , tag_new_literal ) ; off ++ ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank>T<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Literal<S2SV_blank>Tag)<S2SV_blank><S2SV_blank><S2SV_blank>(..)<S2SV_blank>\" \"|<S2SV_blank>%s<%s<S2SV_blank>/>\" , * level , * codepage_stag , Indent ( * level ) , tag_new_literal ) ; off += 1 + tag_len ; } } ( * level ) -- ; } } <S2SV_StartBug> } <S2SV_EndBug> DebugLog ( ( \"STAG:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(end<S2SV_blank>of<S2SV_blank>function<S2SV_blank>body)\\\\n\" , * level , off - offset ) ) ; return ( off - offset ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> off = offset , last_off <S2SV_ModStart> offset ) ) ; last_off = off <S2SV_ModStart> ; } } if ( off < last_off ) { THROW ( ReportedBoundsError ) ; } last_off = off ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2132\n\n```\nCWE-000 static PyObject * get_value ( PyObject * self , const char * buffer , int * position , int type , int max , PyObject * as_class , unsigned char tz_aware , unsigned char uuid_subtype ) { struct module_state * state = GETSTATE ( self ) ; PyObject * value ; PyObject * error ; switch ( type ) { case 1 : { double d ; if ( max < 8 ) { goto invalid ; } memcpy ( & d , buffer + * position , 8 ) ; value = PyFloat_FromDouble ( d ) ; if ( ! value ) { return NULL ; } * position += 8 ; break ; } case 2 : case 14 : { int value_length = ( ( int * ) ( buffer + * position ) ) [ 0 ] - 1 ; if ( max < value_length ) { goto invalid ; } * position += 4 ; value = PyUnicode_DecodeUTF8 ( buffer + * position , value_length , \"strict\" ) ; if ( ! value ) { return NULL ; } * position += value_length + 1 ; break ; } case 3 : { int size ; memcpy ( & size , buffer + * position , 4 ) ; if ( max < size ) { goto invalid ; } value = elements_to_dict ( self , buffer + * position + 4 , size - 5 , as_class , tz_aware , uuid_subtype ) ; if ( ! value ) { return NULL ; } if ( strcmp ( buffer + * position + 5 , \"$ref\" ) == 0 ) { PyObject * dbref ; PyObject * collection = PyDict_GetItemString ( value , \"$ref\" ) ; PyObject * id = PyDict_GetItemString ( value , \"$id\" ) ; PyObject * database = PyDict_GetItemString ( value , \"$db\" ) ; Py_INCREF ( collection ) ; PyDict_DelItemString ( value , \"$ref\" ) ; <S2SV_StartBug> Py_INCREF ( id ) ; <S2SV_EndBug> <S2SV_StartBug> PyDict_DelItemString ( value , \"$id\" ) ; <S2SV_EndBug> if ( database == NULL ) { database = Py_None ; Py_INCREF ( database ) ; } else { Py_INCREF ( database ) ; PyDict_DelItemString ( value , \"$db\" ) ; } dbref = PyObject_CallFunctionObjArgs ( state -> DBRef , collection , id , database , value , NULL ) ; Py_DECREF ( value ) ; value = dbref ; Py_DECREF ( id ) ; Py_DECREF ( collection ) ; Py_DECREF ( database ) ; if ( ! value ) { return NULL ; } } * position += size ; break ; } case 4 : { int size , end ; memcpy ( & size , buffer + * position , 4 ) ; if ( max < size ) { goto invalid ; } end = * position + size - 1 ; * position += 4 ; value = PyList_New ( 0 ) ; if ( ! value ) { return NULL ; } while ( * position < end ) { PyObject * to_append ; int type = ( int ) buffer [ ( * position ) ++ ] ; int key_size = strlen ( buffer + * position ) ; * position += key_size + 1 ; to_append = get_value ( self , buffer , position , type , max - key_size , as_class , tz_aware , uuid_subtype ) ; if ( ! to_append ) { Py_DECREF ( value ) ; return NULL ; } PyList_Append ( value , to_append ) ; Py_DECREF ( to_append ) ; } ( * position ) ++ ; break ; } case 5 : { PyObject * data ; PyObject * st ; int length , subtype ; memcpy ( & length , buffer + * position , 4 ) ; if ( max < length ) { goto invalid ; } subtype = ( unsigned char ) buffer [ * position + 4 ] ; # if PY_MAJOR_VERSION >= 3 if ( subtype == 0 ) { value = PyBytes_FromStringAndSize ( buffer + * position + 5 , length ) ; * position += length + 5 ; break ; } if ( subtype == 2 ) { data = PyBytes_FromStringAndSize ( buffer + * position + 9 , length - 4 ) ; } else { data = PyBytes_FromStringAndSize ( buffer + * position + 5 , length ) ; } # else if ( subtype == 2 ) { data = PyString_FromStringAndSize ( buffer + * position + 9 , length - 4 ) ; } else { data = PyString_FromStringAndSize ( buffer + * position + 5 , length ) ; } # endif if ( ! data ) { return NULL ; } if ( ( subtype == 3 || subtype == 4 ) && state -> UUID ) { PyObject * kwargs ; PyObject * args = PyTuple_New ( 0 ) ; if ( ! args ) { Py_DECREF ( data ) ; return NULL ; } kwargs = PyDict_New ( ) ; if ( ! kwargs ) { Py_DECREF ( data ) ; Py_DECREF ( args ) ; return NULL ; } assert ( length == 16 ) ; if ( uuid_subtype == CSHARP_LEGACY ) { PyDict_SetItemString ( kwargs , \"bytes_le\" , data ) ; } else { if ( uuid_subtype == JAVA_LEGACY ) { char big_endian [ 16 ] ; _fix_java ( buffer + * position + 5 , big_endian ) ; Py_DECREF ( data ) ; # if PY_MAJOR_VERSION >= 3 data = PyBytes_FromStringAndSize ( big_endian , length ) ; # else data = PyString_FromStringAndSize ( big_endian , length ) ; # endif } PyDict_SetItemString ( kwargs , \"bytes\" , data ) ; } value = PyObject_Call ( state -> UUID , args , kwargs ) ; Py_DECREF ( args ) ; Py_DECREF ( kwargs ) ; Py_DECREF ( data ) ; if ( ! value ) { return NULL ; } * position += length + 5 ; break ; } # if PY_MAJOR_VERSION >= 3 st = PyLong_FromLong ( subtype ) ; # else st = PyInt_FromLong ( subtype ) ; # endif if ( ! st ) { Py_DECREF ( data ) ; return NULL ; } value = PyObject_CallFunctionObjArgs ( state -> Binary , data , st , NULL ) ; Py_DECREF ( st ) ; Py_DECREF ( data ) ; if ( ! value ) { return NULL ; } * position += length + 5 ; break ; } case 6 : case 10 : { value = Py_None ; Py_INCREF ( value ) ; break ; } case 7 : { if ( max < 12 ) { goto invalid ; } # if PY_MAJOR_VERSION >= 3 value = PyObject_CallFunction ( state -> ObjectId , \"y#\" , buffer + * position , 12 ) ; # else value = PyObject_CallFunction ( state -> ObjectId , \"s#\" , buffer + * position , 12 ) ; # endif if ( ! value ) { return NULL ; } * position += 12 ; break ; } case 8 : { value = buffer [ ( * position ) ++ ] ? Py_True : Py_False ; Py_INCREF ( value ) ; break ; } case 9 : { PyObject * naive ; PyObject * replace ; PyObject * args ; PyObject * kwargs ; if ( max < 8 ) { goto invalid ; } naive = datetime_from_millis ( * ( long long * ) ( buffer + * position ) ) ; * position += 8 ; if ( ! tz_aware ) { value = naive ; break ; } if ( ! naive ) { return NULL ; } replace = PyObject_GetAttrString ( naive , \"replace\" ) ; Py_DECREF ( naive ) ; if ( ! replace ) { return NULL ; } args = PyTuple_New ( 0 ) ; if ( ! args ) { Py_DECREF ( replace ) ; return NULL ; } kwargs = PyDict_New ( ) ; if ( ! kwargs ) { Py_DECREF ( replace ) ; Py_DECREF ( args ) ; return NULL ; } if ( PyDict_SetItemString ( kwargs , \"tzinfo\" , state -> UTC ) == - 1 ) { Py_DECREF ( replace ) ; Py_DECREF ( args ) ; Py_DECREF ( kwargs ) ; return NULL ; } value = PyObject_Call ( replace , args , kwargs ) ; Py_DECREF ( replace ) ; Py_DECREF ( args ) ; Py_DECREF ( kwargs ) ; break ; } case 11 : { PyObject * pattern ; int flags_length , flags , i ; int pattern_length = strlen ( buffer + * position ) ; if ( max < pattern_length ) { goto invalid ; } pattern = PyUnicode_DecodeUTF8 ( buffer + * position , pattern_length , \"strict\" ) ; if ( ! pattern ) { return NULL ; } * position += pattern_length + 1 ; flags_length = strlen ( buffer + * position ) ; if ( max < pattern_length + flags_length ) { Py_DECREF ( pattern ) ; goto invalid ; } flags = 0 ; for ( i = 0 ; i < flags_length ; i ++ ) { if ( buffer [ * position + i ] == 'i' ) { flags |= 2 ; } else if ( buffer [ * position + i ] == 'l' ) { flags |= 4 ; } else if ( buffer [ * position + i ] == 'm' ) { flags |= 8 ; } else if ( buffer [ * position + i ] == 's' ) { flags |= 16 ; } else if ( buffer [ * position + i ] == 'u' ) { flags |= 32 ; } else if ( buffer [ * position + i ] == 'x' ) { flags |= 64 ; } } * position += flags_length + 1 ; value = PyObject_CallFunction ( state -> RECompile , \"Oi\" , pattern , flags ) ; Py_DECREF ( pattern ) ; break ; } case 12 : { int collection_length ; PyObject * collection ; PyObject * id ; * position += 4 ; collection_length = strlen ( buffer + * position ) ; if ( max < collection_length ) { goto invalid ; } collection = PyUnicode_DecodeUTF8 ( buffer + * position , collection_length , \"strict\" ) ; if ( ! collection ) { return NULL ; } * position += collection_length + 1 ; if ( max < collection_length + 12 ) { Py_DECREF ( collection ) ; goto invalid ; } id = PyObject_CallFunction ( state -> ObjectId , \"s#\" , buffer + * position , 12 ) ; if ( ! id ) { Py_DECREF ( collection ) ; return NULL ; } * position += 12 ; value = PyObject_CallFunctionObjArgs ( state -> DBRef , collection , id , NULL ) ; Py_DECREF ( collection ) ; Py_DECREF ( id ) ; break ; } case 13 : { PyObject * code ; int value_length = ( ( int * ) ( buffer + * position ) ) [ 0 ] - 1 ; if ( max < value_length ) { goto invalid ; } * position += 4 ; code = PyUnicode_DecodeUTF8 ( buffer + * position , value_length , \"strict\" ) ; if ( ! code ) { return NULL ; } * position += value_length + 1 ; value = PyObject_CallFunctionObjArgs ( state -> Code , code , NULL , NULL ) ; Py_DECREF ( code ) ; break ; } case 15 : { int code_length , scope_size ; PyObject * code ; PyObject * scope ; * position += 8 ; code_length = strlen ( buffer + * position ) ; if ( max < 8 + code_length ) { goto invalid ; } code = PyUnicode_DecodeUTF8 ( buffer + * position , code_length , \"strict\" ) ; if ( ! code ) { return NULL ; } * position += code_length + 1 ; memcpy ( & scope_size , buffer + * position , 4 ) ; scope = elements_to_dict ( self , buffer + * position + 4 , scope_size - 5 , ( PyObject * ) & PyDict_Type , tz_aware , uuid_subtype ) ; if ( ! scope ) { Py_DECREF ( code ) ; return NULL ; } * position += scope_size ; value = PyObject_CallFunctionObjArgs ( state -> Code , code , scope , NULL ) ; Py_DECREF ( code ) ; Py_DECREF ( scope ) ; break ; } case 16 : { int i ; if ( max < 4 ) { goto invalid ; } memcpy ( & i , buffer + * position , 4 ) ; # if PY_MAJOR_VERSION >= 3 value = PyLong_FromLong ( i ) ; # else value = PyInt_FromLong ( i ) ; # endif if ( ! value ) { return NULL ; } * position += 4 ; break ; } case 17 : { unsigned int time , inc ; if ( max < 8 ) { goto invalid ; } memcpy ( & inc , buffer + * position , 4 ) ; memcpy ( & time , buffer + * position + 4 , 4 ) ; value = PyObject_CallFunction ( state -> Timestamp , \"II\" , time , inc ) ; if ( ! value ) { return NULL ; } * position += 8 ; break ; } case 18 : { long long ll ; if ( max < 8 ) { goto invalid ; } memcpy ( & ll , buffer + * position , 8 ) ; value = PyLong_FromLongLong ( ll ) ; if ( ! value ) { return NULL ; } * position += 8 ; break ; } case - 1 : { value = PyObject_CallFunctionObjArgs ( state -> MinKey , NULL ) ; break ; } case 127 : { value = PyObject_CallFunctionObjArgs ( state -> MaxKey , NULL ) ; break ; } default : { PyObject * InvalidDocument = _error ( \"InvalidDocument\" ) ; PyErr_SetString ( InvalidDocument , \"no<S2SV_blank>c<S2SV_blank>decoder<S2SV_blank>for<S2SV_blank>this<S2SV_blank>type<S2SV_blank>yet\" ) ; Py_DECREF ( InvalidDocument ) ; return NULL ; } } return value ; invalid : error = _error ( \"InvalidBSON\" ) ; PyErr_SetNone ( error ) ; Py_DECREF ( error ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"$ref\" ) ; if ( id == NULL ) { id = Py_None ; <S2SV_ModStart> id ) ; } else { Py_INCREF ( id ) ; <S2SV_ModStart> \"$id\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14881\n\n```\nCWE-125 static void bgp_capabilities_print ( netdissect_options * ndo , const u_char * opt , int caps_len ) { int cap_type , cap_len , tcap_len , cap_offset ; int i = 0 ; while ( i < caps_len ) { ND_TCHECK2 ( opt [ i ] , BGP_CAP_HEADER_SIZE ) ; cap_type = opt [ i ] ; cap_len = opt [ i + 1 ] ; tcap_len = cap_len ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_capcode_values , \"Unknown\" , cap_type ) , cap_type , cap_len ) ) ; ND_TCHECK2 ( opt [ i + 2 ] , cap_len ) ; switch ( cap_type ) { case BGP_CAPCODE_MP : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tAFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>SAFI<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown\" , EXTRACT_16BITS ( opt + i + 2 ) ) , EXTRACT_16BITS ( opt + i + 2 ) , tok2str ( bgp_safi_values , \"Unknown\" , opt [ i + 5 ] ) , opt [ i + 5 ] ) ) ; break ; <S2SV_StartBug> case BGP_CAPCODE_RESTART : <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tRestart<S2SV_blank>Flags:<S2SV_blank>[%s],<S2SV_blank>Restart<S2SV_blank>Time<S2SV_blank>%us\" , ( ( opt [ i + 2 ] ) & 0x80 ) ? \"R\" : \"none\" , EXTRACT_16BITS ( opt + i + 2 ) & 0xfff ) ) ; tcap_len -= 2 ; cap_offset = 4 ; while ( tcap_len >= 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>AFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>SAFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Forwarding<S2SV_blank>state<S2SV_blank>preserved:<S2SV_blank>%s\" , tok2str ( af_values , \"Unknown\" , EXTRACT_16BITS ( opt + i + cap_offset ) ) , EXTRACT_16BITS ( opt + i + cap_offset ) , tok2str ( bgp_safi_values , \"Unknown\" , opt [ i + cap_offset + 2 ] ) , opt [ i + cap_offset + 2 ] , ( ( opt [ i + cap_offset + 3 ] ) & 0x80 ) ? \"yes\" : \"no\" ) ) ; tcap_len -= 4 ; cap_offset += 4 ; } break ; case BGP_CAPCODE_RR : case BGP_CAPCODE_RR_CISCO : break ; case BGP_CAPCODE_AS_NEW : if ( cap_len == 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>4<S2SV_blank>Byte<S2SV_blank>AS<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( opt + i + 2 ) ) ) ) ; } break ; case BGP_CAPCODE_ADD_PATH : cap_offset = 2 ; if ( tcap_len == 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(bogus)\" ) ) ; break ; } while ( tcap_len > 0 ) { if ( tcap_len < 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t(invalid)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tAFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>SAFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Send/Receive:<S2SV_blank>%s\" , tok2str ( af_values , \"Unknown\" , EXTRACT_16BITS ( opt + i + cap_offset ) ) , EXTRACT_16BITS ( opt + i + cap_offset ) , tok2str ( bgp_safi_values , \"Unknown\" , opt [ i + cap_offset + 2 ] ) , opt [ i + cap_offset + 2 ] , tok2str ( bgp_add_path_recvsend , \"Bogus<S2SV_blank>(0x%02x)\" , opt [ i + cap_offset + 3 ] ) ) ) ; tcap_len -= 4 ; cap_offset += 4 ; } break ; default : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tno<S2SV_blank>decoder<S2SV_blank>for<S2SV_blank>Capability<S2SV_blank>%u\" , cap_type ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , & opt [ i + 2 ] , \"\\\\n\\\\t\\\\t\" , cap_len ) ; break ; } if ( ndo -> ndo_vflag > 1 && cap_len > 0 ) { print_unknown_data ( ndo , & opt [ i + 2 ] , \"\\\\n\\\\t\\\\t\" , cap_len ) ; } i += BGP_CAP_HEADER_SIZE + cap_len ; } return ; trunc : ND_PRINT ( ( ndo , \"[|BGP]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case BGP_CAPCODE_RESTART : ND_TCHECK_16BITS ( opt + i + 2 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11339\n\n```\nCWE-125 static int mpeg4_decode_studio_block ( MpegEncContext * s , int32_t block [ 64 ] , int n ) { Mpeg4DecContext * ctx = s -> avctx -> priv_data ; int cc , dct_dc_size , dct_diff , code , j , idx = 1 , group = 0 , run = 0 , additional_code_len , sign , mismatch ; VLC * cur_vlc = & ctx -> studio_intra_tab [ 0 ] ; uint8_t * const scantable = s -> intra_scantable . permutated ; const uint16_t * quant_matrix ; uint32_t flc ; const int min = - 1 * ( 1 << ( s -> avctx -> bits_per_raw_sample + 6 ) ) ; const int max = ( ( 1 << ( s -> avctx -> bits_per_raw_sample + 6 ) ) - 1 ) ; mismatch = 1 ; memset ( block , 0 , 64 * sizeof ( int32_t ) ) ; if ( n < 4 ) { cc = 0 ; dct_dc_size = get_vlc2 ( & s -> gb , ctx -> studio_luma_dc . table , STUDIO_INTRA_BITS , 2 ) ; quant_matrix = s -> intra_matrix ; } else { cc = ( n & 1 ) + 1 ; if ( ctx -> rgb ) dct_dc_size = get_vlc2 ( & s -> gb , ctx -> studio_luma_dc . table , STUDIO_INTRA_BITS , 2 ) ; else dct_dc_size = get_vlc2 ( & s -> gb , ctx -> studio_chroma_dc . table , STUDIO_INTRA_BITS , 2 ) ; quant_matrix = s -> chroma_intra_matrix ; } if ( dct_dc_size < 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"illegal<S2SV_blank>dct_dc_size<S2SV_blank>vlc\\\\n\" ) ; return AVERROR_INVALIDDATA ; } else if ( dct_dc_size == 0 ) { dct_diff = 0 ; } else { dct_diff = get_xbits ( & s -> gb , dct_dc_size ) ; if ( dct_dc_size > 8 ) { if ( ! check_marker ( s -> avctx , & s -> gb , \"dct_dc_size<S2SV_blank>><S2SV_blank>8\" ) ) return AVERROR_INVALIDDATA ; } } s -> last_dc [ cc ] += dct_diff ; if ( s -> mpeg_quant ) block [ 0 ] = s -> last_dc [ cc ] * ( 8 >> s -> intra_dc_precision ) ; else block [ 0 ] = s -> last_dc [ cc ] * ( 8 >> s -> intra_dc_precision ) * ( 8 >> s -> dct_precision ) ; block [ 0 ] = av_clip ( block [ 0 ] , min , max ) ; mismatch ^= block [ 0 ] ; while ( 1 ) { group = get_vlc2 ( & s -> gb , cur_vlc -> table , STUDIO_INTRA_BITS , 2 ) ; if ( group < 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"illegal<S2SV_blank>ac<S2SV_blank>coefficient<S2SV_blank>group<S2SV_blank>vlc\\\\n\" ) ; return AVERROR_INVALIDDATA ; } additional_code_len = ac_state_tab [ group ] [ 0 ] ; cur_vlc = & ctx -> studio_intra_tab [ ac_state_tab [ group ] [ 1 ] ] ; if ( group == 0 ) { break ; } else if ( group >= 1 && group <= 6 ) { run = 1 << additional_code_len ; if ( additional_code_len ) run += get_bits ( & s -> gb , additional_code_len ) ; idx += run ; continue ; } else if ( group >= 7 && group <= 12 ) { code = get_bits ( & s -> gb , additional_code_len ) ; sign = code & 1 ; code >>= 1 ; run = ( 1 << ( additional_code_len - 1 ) ) + code ; idx += run ; <S2SV_StartBug> j = scantable [ idx ++ ] ; <S2SV_EndBug> block [ j ] = sign ? 1 : - 1 ; } else if ( group >= 13 && group <= 20 ) { <S2SV_StartBug> j = scantable [ idx ++ ] ; <S2SV_EndBug> block [ j ] = get_xbits ( & s -> gb , additional_code_len ) ; <S2SV_StartBug> } else if ( group == 21 ) { <S2SV_EndBug> j = scantable [ idx ++ ] ; additional_code_len = s -> avctx -> bits_per_raw_sample + s -> dct_precision + 4 ; flc = get_bits ( & s -> gb , additional_code_len ) ; if ( flc >> ( additional_code_len - 1 ) ) block [ j ] = - 1 * ( ( flc ^ ( ( 1 << additional_code_len ) - 1 ) ) + 1 ) ; else block [ j ] = flc ; } block [ j ] = ( ( 8 * 2 * block [ j ] * quant_matrix [ j ] * s -> qscale ) >> s -> dct_precision ) / 32 ; block [ j ] = av_clip ( block [ j ] , min , max ) ; mismatch ^= block [ j ] ; } block [ 63 ] ^= mismatch & 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += run ; if ( idx > 63 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> 20 ) { if ( idx > 63 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> 21 ) { if ( idx > 63 ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void extend_to_full_distribution ( vp9_prob * probs , vp9_prob p ) { <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( probs , vp9_pareto8_full [ p = 0 ? 0 : p - 1 ] , <S2SV_EndBug> <S2SV_StartBug> MODEL_NODES * sizeof ( vp9_prob ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void extend_to_full_distribution ( vpx_prob <S2SV_ModEnd> * probs , <S2SV_ModStart> * probs , vpx_prob <S2SV_ModEnd> p ) { <S2SV_ModStart> p ) { memcpy <S2SV_ModEnd> ( probs , <S2SV_ModStart> * sizeof ( vpx_prob <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8126\n\n```\nCWE-119 png_charp PNGAPI png_get_copyright ( png_structp png_ptr ) { PNG_UNUSED ( png_ptr ) # ifdef PNG_STRING_COPYRIGHT return PNG_STRING_COPYRIGHT # else # ifdef __STDC__ <S2SV_StartBug> return ( ( png_charp ) PNG_STRING_NEWLINE \"libpng<S2SV_blank>version<S2SV_blank>1.2.52<S2SV_blank>-<S2SV_blank>November<S2SV_blank>20,<S2SV_blank>2014\" PNG_STRING_NEWLINE \"Copyright<S2SV_blank>(c)<S2SV_blank>1998-2014<S2SV_blank>Glenn<S2SV_blank>Randers-Pehrson\" PNG_STRING_NEWLINE \"Copyright<S2SV_blank>(c)<S2SV_blank>1996-1997<S2SV_blank>Andreas<S2SV_blank>Dilger\" PNG_STRING_NEWLINE \"Copyright<S2SV_blank>(c)<S2SV_blank>1995-1996<S2SV_blank>Guy<S2SV_blank>Eric<S2SV_blank>Schalnat,<S2SV_blank>Group<S2SV_blank>42,<S2SV_blank>Inc.\" PNG_STRING_NEWLINE ) ; <S2SV_EndBug> # else <S2SV_StartBug> return ( ( png_charp ) \"libpng<S2SV_blank>version<S2SV_blank>1.2.52<S2SV_blank>-<S2SV_blank>November<S2SV_blank>20,<S2SV_blank>2014\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Copyright<S2SV_blank>(c)<S2SV_blank>1998-2014<S2SV_blank>Glenn<S2SV_blank>Randers-Pehrson\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Copyright<S2SV_blank>(c)<S2SV_blank>1996-1997<S2SV_blank>Andreas<S2SV_blank>Dilger\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Copyright<S2SV_blank>(c)<S2SV_blank>1995-1996<S2SV_blank>Guy<S2SV_blank>Eric<S2SV_blank>Schalnat,<S2SV_blank>Group<S2SV_blank>42,<S2SV_blank>Inc.\" ) ; <S2SV_EndBug> # endif # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> png_charp ) PNG_STRING_NEWLINE \"libpng<S2SV_blank>version<S2SV_blank>1.2.54<S2SV_blank>-<S2SV_blank>November<S2SV_blank>12,<S2SV_blank>2015\" PNG_STRING_NEWLINE \"Copyright<S2SV_blank>(c)<S2SV_blank>1998-2015<S2SV_blank>Glenn<S2SV_blank>Randers-Pehrson\" <S2SV_ModEnd> PNG_STRING_NEWLINE \"Copyright<S2SV_blank>(c)<S2SV_blank>1996-1997<S2SV_blank>Andreas<S2SV_blank>Dilger\" PNG_STRING_NEWLINE <S2SV_ModStart> ( png_charp ) \"libpng<S2SV_blank>version<S2SV_blank>1.2.54<S2SV_blank>-<S2SV_blank>November<S2SV_blank>12,<S2SV_blank>2015\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Copyright<S2SV_blank>(c)<S2SV_blank>1998-2015<S2SV_blank>Glenn<S2SV_blank>Randers-Pehrson\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Copyright<S2SV_blank>(c)<S2SV_blank>1996-1997<S2SV_blank>Andreas<S2SV_blank>Dilger\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Copyright<S2SV_blank>(c)<S2SV_blank>1995-1996<S2SV_blank>Guy<S2SV_blank>Eric<S2SV_blank>Schalnat,<S2SV_blank>Group<S2SV_blank>42,<S2SV_blank>Inc.\" <S2SV_ModEnd> ) ; #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4054\n\n```\nCWE-476 static bool handle_client_startup ( PgSocket * client , PktHdr * pkt ) { const char * passwd ; const uint8_t * key ; bool ok ; SBuf * sbuf = & client -> sbuf ; if ( incomplete_pkt ( pkt ) ) { disconnect_client ( client , true , \"client<S2SV_blank>sent<S2SV_blank>partial<S2SV_blank>pkt<S2SV_blank>in<S2SV_blank>startup<S2SV_blank>phase\" ) ; return false ; } if ( client -> wait_for_welcome ) { if ( finish_client_login ( client ) ) { sbuf_prepare_skip ( sbuf , pkt -> len ) ; return true ; } else return false ; } switch ( pkt -> type ) { case PKT_SSLREQ : slog_noise ( client , \"C:<S2SV_blank>req<S2SV_blank>SSL\" ) ; slog_noise ( client , \"P:<S2SV_blank>nak\" ) ; if ( ! sbuf_answer ( & client -> sbuf , \"N\" , 1 ) ) { disconnect_client ( client , false , \"failed<S2SV_blank>to<S2SV_blank>nak<S2SV_blank>SSL\" ) ; return false ; } break ; case PKT_STARTUP_V2 : disconnect_client ( client , true , \"Old<S2SV_blank>V2<S2SV_blank>protocol<S2SV_blank>not<S2SV_blank>supported\" ) ; return false ; case PKT_STARTUP : if ( client -> pool ) { disconnect_client ( client , true , \"client<S2SV_blank>re-sent<S2SV_blank>startup<S2SV_blank>pkt\" ) ; return false ; } if ( ! decide_startup_pool ( client , pkt ) ) return false ; if ( client -> pool -> db -> admin ) { if ( ! admin_pre_login ( client ) ) return false ; } if ( cf_auth_type <= AUTH_TRUST || client -> own_user ) { if ( ! finish_client_login ( client ) ) return false ; } else { if ( ! send_client_authreq ( client ) ) { disconnect_client ( client , false , \"failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>auth<S2SV_blank>req\" ) ; return false ; } } break ; case 'p' : <S2SV_StartBug> if ( cf_auth_type <= AUTH_TRUST ) { <S2SV_EndBug> disconnect_client ( client , true , \"unrequested<S2SV_blank>passwd<S2SV_blank>pkt\" ) ; return false ; } ok = mbuf_get_string ( & pkt -> data , & passwd ) ; if ( ok && check_client_passwd ( client , passwd ) ) { if ( ! finish_client_login ( client ) ) return false ; } else { disconnect_client ( client , true , \"Auth<S2SV_blank>failed\" ) ; return false ; } break ; case PKT_CANCEL : if ( mbuf_avail_for_read ( & pkt -> data ) == BACKENDKEY_LEN && mbuf_get_bytes ( & pkt -> data , BACKENDKEY_LEN , & key ) ) { memcpy ( client -> cancel_key , key , BACKENDKEY_LEN ) ; accept_cancel_request ( client ) ; } else disconnect_client ( client , false , \"bad<S2SV_blank>cancel<S2SV_blank>request\" ) ; return false ; default : disconnect_client ( client , false , \"bad<S2SV_blank>packet\" ) ; return false ; } sbuf_prepare_skip ( sbuf , pkt -> len ) ; client -> request_time = get_cached_time ( ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( ! client -> auth_user ) { disconnect_client ( client , true , \"client<S2SV_blank>password<S2SV_blank>pkt<S2SV_blank>before<S2SV_blank>startup<S2SV_blank>packet\" ) ; return false ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14954\n\n```\nCWE-74 int imap_exec ( struct ImapAccountData * adata , const char * cmdstr , ImapCmdFlags flags ) { int rc ; <S2SV_StartBug> rc = cmd_start ( adata , cmdstr , flags ) ; <S2SV_EndBug> if ( rc < 0 ) { cmd_handle_fatal ( adata ) ; return IMAP_EXEC_FATAL ; } if ( flags & IMAP_CMD_QUEUE ) return IMAP_EXEC_SUCCESS ; if ( ( flags & IMAP_CMD_POLL ) && ( C_ImapPollTimeout > 0 ) && ( ( mutt_socket_poll ( adata -> conn , C_ImapPollTimeout ) ) == 0 ) ) { mutt_error ( _ ( \"Connection<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>timed<S2SV_blank>out\" ) , adata -> conn -> account . host ) ; cmd_handle_fatal ( adata ) ; return IMAP_EXEC_FATAL ; } mutt_sig_allow_interrupt ( true ) ; do { rc = imap_cmd_step ( adata ) ; <S2SV_StartBug> } while ( rc == IMAP_RES_CONTINUE ) ; <S2SV_EndBug> mutt_sig_allow_interrupt ( false ) ; if ( rc == IMAP_RES_NO ) return IMAP_EXEC_ERROR ; if ( rc != IMAP_RES_OK ) { if ( adata -> status != IMAP_FATAL ) return IMAP_EXEC_ERROR ; mutt_debug ( LL_DEBUG1 , \"command<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , adata -> buf ) ; return IMAP_EXEC_FATAL ; } return IMAP_EXEC_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int rc ; if ( flags & IMAP_CMD_SINGLE ) { if ( adata -> nextcmd != adata -> lastcmd ) imap_exec ( adata , NULL , IMAP_CMD_POLL ) ; } <S2SV_ModStart> adata ) ; if ( ( flags & IMAP_CMD_SINGLE ) && ( adata -> nextcmd == adata -> lastcmd ) ) break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5735\n\n```\nCWE-190 static pngquant_error rwpng_read_image24_libpng ( FILE * infile , png24_image * mainprog_ptr , int verbose ) { png_structp png_ptr = NULL ; png_infop info_ptr = NULL ; png_size_t rowbytes ; int color_type , bit_depth ; png_ptr = png_create_read_struct ( PNG_LIBPNG_VER_STRING , mainprog_ptr , rwpng_error_handler , verbose ? rwpng_warning_stderr_handler : rwpng_warning_silent_handler ) ; if ( ! png_ptr ) { return PNG_OUT_OF_MEMORY_ERROR ; } info_ptr = png_create_info_struct ( png_ptr ) ; if ( ! info_ptr ) { png_destroy_read_struct ( & png_ptr , NULL , NULL ) ; return PNG_OUT_OF_MEMORY_ERROR ; } if ( setjmp ( mainprog_ptr -> jmpbuf ) ) { png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; return LIBPNG_FATAL_ERROR ; } # if defined ( PNG_SKIP_sRGB_CHECK_PROFILE ) && defined ( PNG_SET_OPTION_SUPPORTED ) png_set_option ( png_ptr , PNG_SKIP_sRGB_CHECK_PROFILE , PNG_OPTION_ON ) ; # endif # if PNG_LIBPNG_VER >= 10500 && defined ( PNG_UNKNOWN_CHUNKS_SUPPORTED ) png_set_keep_unknown_chunks ( png_ptr , PNG_HANDLE_CHUNK_IF_SAFE , ( png_const_bytep ) \"pHYs\\\\0iTXt\\\\0tEXt\\\\0zTXt\" , 4 ) ; # endif png_set_read_user_chunk_fn ( png_ptr , & mainprog_ptr -> chunks , read_chunk_callback ) ; struct rwpng_read_data read_data = { infile , 0 } ; png_set_read_fn ( png_ptr , & read_data , user_read_data ) ; png_read_info ( png_ptr , info_ptr ) ; png_get_IHDR ( png_ptr , info_ptr , & mainprog_ptr -> width , & mainprog_ptr -> height , & bit_depth , & color_type , NULL , NULL , NULL ) ; <S2SV_StartBug> if ( mainprog_ptr -> width > INT_MAX / mainprog_ptr -> height ) { <S2SV_EndBug> png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; return PNG_OUT_OF_MEMORY_ERROR ; } if ( ! ( color_type & PNG_COLOR_MASK_ALPHA ) ) { # ifdef PNG_READ_FILLER_SUPPORTED png_set_expand ( png_ptr ) ; png_set_filler ( png_ptr , 65535L , PNG_FILLER_AFTER ) ; # else fprintf ( stderr , \"pngquant<S2SV_blank>readpng:<S2SV_blank><S2SV_blank>image<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>RGBA<S2SV_blank>nor<S2SV_blank>GA\\\\n\" ) ; png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; mainprog_ptr -> retval = WRONG_INPUT_COLOR_TYPE ; return mainprog_ptr -> retval ; # endif } if ( bit_depth == 16 ) { png_set_strip_16 ( png_ptr ) ; } if ( ! ( color_type & PNG_COLOR_MASK_COLOR ) ) { png_set_gray_to_rgb ( png_ptr ) ; } double gamma = 0.45455 ; if ( png_get_valid ( png_ptr , info_ptr , PNG_INFO_sRGB ) ) { mainprog_ptr -> input_color = RWPNG_SRGB ; mainprog_ptr -> output_color = RWPNG_SRGB ; } else { png_get_gAMA ( png_ptr , info_ptr , & gamma ) ; if ( gamma > 0 && gamma <= 1.0 ) { mainprog_ptr -> input_color = RWPNG_GAMA_ONLY ; mainprog_ptr -> output_color = RWPNG_GAMA_ONLY ; } else { fprintf ( stderr , \"pngquant<S2SV_blank>readpng:<S2SV_blank><S2SV_blank>ignored<S2SV_blank>out-of-range<S2SV_blank>gamma<S2SV_blank>%f\\\\n\" , gamma ) ; mainprog_ptr -> input_color = RWPNG_NONE ; mainprog_ptr -> output_color = RWPNG_NONE ; gamma = 0.45455 ; } } mainprog_ptr -> gamma = gamma ; png_set_interlace_handling ( png_ptr ) ; png_read_update_info ( png_ptr , info_ptr ) ; rowbytes = png_get_rowbytes ( png_ptr , info_ptr ) ; <S2SV_StartBug> if ( ( mainprog_ptr -> rgba_data = malloc ( rowbytes * mainprog_ptr -> height ) ) == NULL ) { <S2SV_EndBug> fprintf ( stderr , \"pngquant<S2SV_blank>readpng:<S2SV_blank><S2SV_blank>unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>image<S2SV_blank>data\\\\n\" ) ; png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; return PNG_OUT_OF_MEMORY_ERROR ; } png_bytepp row_pointers = rwpng_create_row_pointers ( info_ptr , png_ptr , mainprog_ptr -> rgba_data , mainprog_ptr -> height , 0 ) ; png_read_image ( png_ptr , row_pointers ) ; png_read_end ( png_ptr , NULL ) ; # if USE_LCMS # if PNG_LIBPNG_VER < 10500 png_charp ProfileData ; # else png_bytep ProfileData ; # endif png_uint_32 ProfileLen ; cmsHPROFILE hInProfile = NULL ; int COLOR_PNG = color_type & PNG_COLOR_MASK_COLOR ; if ( png_get_iCCP ( png_ptr , info_ptr , & ( png_charp ) { 0 } , & ( int ) { 0 } , & ProfileData , & ProfileLen ) ) { hInProfile = cmsOpenProfileFromMem ( ProfileData , ProfileLen ) ; cmsColorSpaceSignature colorspace = cmsGetColorSpace ( hInProfile ) ; if ( colorspace == cmsSigRgbData && COLOR_PNG ) { mainprog_ptr -> input_color = RWPNG_ICCP ; mainprog_ptr -> output_color = RWPNG_SRGB ; } else { if ( colorspace == cmsSigGrayData && ! COLOR_PNG ) { mainprog_ptr -> input_color = RWPNG_ICCP_WARN_GRAY ; mainprog_ptr -> output_color = RWPNG_SRGB ; } cmsCloseProfile ( hInProfile ) ; hInProfile = NULL ; } } if ( hInProfile == NULL && COLOR_PNG && ! png_get_valid ( png_ptr , info_ptr , PNG_INFO_sRGB ) && png_get_valid ( png_ptr , info_ptr , PNG_INFO_gAMA ) && png_get_valid ( png_ptr , info_ptr , PNG_INFO_cHRM ) ) { cmsCIExyY WhitePoint ; cmsCIExyYTRIPLE Primaries ; png_get_cHRM ( png_ptr , info_ptr , & WhitePoint . x , & WhitePoint . y , & Primaries . Red . x , & Primaries . Red . y , & Primaries . Green . x , & Primaries . Green . y , & Primaries . Blue . x , & Primaries . Blue . y ) ; WhitePoint . Y = Primaries . Red . Y = Primaries . Green . Y = Primaries . Blue . Y = 1.0 ; cmsToneCurve * GammaTable [ 3 ] ; GammaTable [ 0 ] = GammaTable [ 1 ] = GammaTable [ 2 ] = cmsBuildGamma ( NULL , 1 / gamma ) ; hInProfile = cmsCreateRGBProfile ( & WhitePoint , & Primaries , GammaTable ) ; cmsFreeToneCurve ( GammaTable [ 0 ] ) ; mainprog_ptr -> input_color = RWPNG_GAMA_CHRM ; mainprog_ptr -> output_color = RWPNG_SRGB ; } if ( hInProfile != NULL ) { cmsHPROFILE hOutProfile = cmsCreate_sRGBProfile ( ) ; cmsHTRANSFORM hTransform = cmsCreateTransform ( hInProfile , TYPE_RGBA_8 , hOutProfile , TYPE_RGBA_8 , INTENT_PERCEPTUAL , omp_get_max_threads ( ) > 1 ? cmsFLAGS_NOCACHE : 0 ) ; # pragma omp parallel for if ( mainprog_ptr -> height * mainprog_ptr -> width > 8000 ) schedule ( static ) for ( unsigned int i = 0 ; i < mainprog_ptr -> height ; i ++ ) { cmsDoTransform ( hTransform , row_pointers [ i ] , row_pointers [ i ] , mainprog_ptr -> width ) ; } cmsDeleteTransform ( hTransform ) ; cmsCloseProfile ( hOutProfile ) ; cmsCloseProfile ( hInProfile ) ; mainprog_ptr -> gamma = 0.45455 ; } # endif png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; mainprog_ptr -> file_size = read_data . bytes_read ; mainprog_ptr -> row_pointers = ( unsigned char * * ) row_pointers ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> ; if ( rowbytes > INT_MAX / mainprog_ptr -> height ) { png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; return PNG_OUT_OF_MEMORY_ERROR ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2185\n\n```\nCWE-000 static int ati_remote2_probe ( struct usb_interface * interface , const struct usb_device_id * id ) { struct usb_device * udev = interface_to_usbdev ( interface ) ; struct usb_host_interface * alt = interface -> cur_altsetting ; struct ati_remote2 * ar2 ; int r ; if ( alt -> desc . bInterfaceNumber ) return - ENODEV ; ar2 = kzalloc ( sizeof ( struct ati_remote2 ) , GFP_KERNEL ) ; if ( ! ar2 ) return - ENOMEM ; ar2 -> udev = udev ; <S2SV_StartBug> ar2 -> intf [ 0 ] = interface ; <S2SV_EndBug> ar2 -> ep [ 0 ] = & alt -> endpoint [ 0 ] . desc ; ar2 -> intf [ 1 ] = usb_ifnum_to_if ( udev , 1 ) ; <S2SV_StartBug> r = usb_driver_claim_interface ( & ati_remote2_driver , ar2 -> intf [ 1 ] , ar2 ) ; <S2SV_EndBug> if ( r ) goto fail1 ; alt = ar2 -> intf [ 1 ] -> cur_altsetting ; <S2SV_StartBug> ar2 -> ep [ 1 ] = & alt -> endpoint [ 0 ] . desc ; <S2SV_EndBug> r = ati_remote2_urb_init ( ar2 ) ; if ( r ) <S2SV_StartBug> goto fail2 ; <S2SV_EndBug> ar2 -> channel_mask = channel_mask ; ar2 -> mode_mask = mode_mask ; r = ati_remote2_setup ( ar2 , ar2 -> channel_mask ) ; if ( r ) <S2SV_StartBug> goto fail2 ; <S2SV_EndBug> usb_make_path ( udev , ar2 -> phys , sizeof ( ar2 -> phys ) ) ; strlcat ( ar2 -> phys , \"/input0\" , sizeof ( ar2 -> phys ) ) ; strlcat ( ar2 -> name , \"ATI<S2SV_blank>Remote<S2SV_blank>Wonder<S2SV_blank>II\" , sizeof ( ar2 -> name ) ) ; r = sysfs_create_group ( & udev -> dev . kobj , & ati_remote2_attr_group ) ; if ( r ) <S2SV_StartBug> goto fail2 ; <S2SV_EndBug> r = ati_remote2_input_init ( ar2 ) ; if ( r ) <S2SV_StartBug> goto fail3 ; <S2SV_EndBug> usb_set_intfdata ( interface , ar2 ) ; interface -> needs_remote_wakeup = 1 ; return 0 ; <S2SV_StartBug> fail3 : <S2SV_EndBug> sysfs_remove_group ( & udev -> dev . kobj , & ati_remote2_attr_group ) ; fail2 : <S2SV_StartBug> ati_remote2_urb_cleanup ( ar2 ) ; <S2SV_EndBug> usb_driver_release_interface ( & ati_remote2_driver , ar2 -> intf [ 1 ] ) ; fail1 : kfree ( ar2 ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = udev ; if ( alt -> desc . bNumEndpoints < 1 || ! alt -> endpoint ) { dev_err ( & interface -> dev , \"%s():<S2SV_blank>interface<S2SV_blank>0<S2SV_blank>must<S2SV_blank>have<S2SV_blank>an<S2SV_blank>endpoint\\\\n\" , __func__ ) ; r = - ENODEV ; goto fail1 ; } <S2SV_ModStart> 1 ) ; if ( ( udev -> actconfig -> desc . bNumInterfaces < 2 ) || ! ar2 -> intf [ 1 ] ) { dev_err ( & interface -> dev , \"%s():<S2SV_blank>need<S2SV_blank>2<S2SV_blank>interfaces,<S2SV_blank>found<S2SV_blank>%d\\\\n\" , __func__ , udev -> actconfig -> desc . bNumInterfaces ) ; r = - ENODEV ; goto fail1 ; } <S2SV_ModStart> -> cur_altsetting ; if ( alt -> desc . bNumEndpoints < 1 || ! alt -> endpoint ) { dev_err ( & interface -> dev , \"%s():<S2SV_blank>interface<S2SV_blank>1<S2SV_blank>must<S2SV_blank>have<S2SV_blank>an<S2SV_blank>endpoint\\\\n\" , __func__ ) ; r = - ENODEV ; goto fail2 ; } <S2SV_ModStart> r ) goto fail3 <S2SV_ModEnd> ; ar2 -> <S2SV_ModStart> r ) goto fail3 <S2SV_ModEnd> ; usb_make_path ( <S2SV_ModStart> r ) goto fail3 <S2SV_ModEnd> ; r = <S2SV_ModStart> r ) goto fail4 <S2SV_ModEnd> ; usb_set_intfdata ( <S2SV_ModStart> return 0 ; fail4 : sysfs_remove_group ( & udev -> dev . kobj , & ati_remote2_attr_group ) ; fail3 : ati_remote2_urb_cleanup ( ar2 <S2SV_ModEnd> ) ; fail2 <S2SV_ModStart> ; fail2 : <S2SV_ModEnd> usb_driver_release_interface ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13203\n\n```\nCWE-200 WORD32 ih264d_video_decode ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ( dec_hdl -> pv_codec_handle ) ; WORD32 i4_err_status = 0 ; UWORD8 * pu1_buf = NULL ; WORD32 buflen ; UWORD32 u4_max_ofst , u4_length_of_start_code = 0 ; UWORD32 bytes_consumed = 0 ; UWORD32 cur_slice_is_nonref = 0 ; UWORD32 u4_next_is_aud ; UWORD32 u4_first_start_code_found = 0 ; WORD32 ret = 0 , api_ret_value = IV_SUCCESS ; WORD32 header_data_left = 0 , frame_data_left = 0 ; UWORD8 * pu1_bitstrm_buf ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; ithread_set_name ( ( void * ) \"Parse_thread\" ) ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size ; u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } ps_dec -> pv_dec_out = ps_dec_op ; if ( ps_dec -> init_done != 1 ) { return IV_FAIL ; } DATA_SYNC ( ) ; if ( 0 == ps_dec -> u1_flushfrm ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } ps_dec -> u1_pic_decode_done = 0 ; ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec -> ps_out_buffer = NULL ; if ( ps_dec_ip -> u4_size >= offsetof ( ivd_video_decode_ip_t , s_out_buffer ) ) ps_dec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 0 ; ps_dec -> s_disp_op . u4_error_code = 1 ; ps_dec -> u4_fmt_conv_num_rows = FMT_CONV_NUM_ROWS ; if ( 0 == ps_dec -> u4_share_disp_buf && ps_dec -> i4_decode_header == 0 ) { UWORD32 i ; if ( ( ps_dec -> ps_out_buffer -> u4_num_bufs == 0 ) || ( ps_dec -> ps_out_buffer -> u4_num_bufs > IVD_VIDDEC_MAX_IO_BUFFERS ) ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec -> ps_out_buffer -> u4_num_bufs ; i ++ ) { if ( ps_dec -> ps_out_buffer -> pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec -> ps_out_buffer -> u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } if ( ps_dec -> u4_total_frames_decoded >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code = ERROR_FRAME_LIMIT_OVER ; return IV_FAIL ; } ps_dec -> u4_ts = ps_dec_ip -> u4_ts ; ps_dec_op -> u4_error_code = 0 ; ps_dec_op -> e_pic_type = - 1 ; ps_dec_op -> u4_output_present = 0 ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; ps_dec -> u4_slice_start_code_found = 0 ; if ( ps_dec -> u1_init_dec_flag == 1 && ps_dec -> u4_share_disp_buf == 1 && ps_dec -> u1_flushfrm == 0 ) { UWORD32 i ; WORD32 disp_avail = 0 , free_id ; for ( i = 0 ; i < ps_dec -> u1_pic_bufs ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_mapping [ i ] || 1 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) { disp_avail = 1 ; break ; } } if ( 0 == disp_avail ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } while ( 1 ) { pic_buffer_t * ps_pic_buf ; ps_pic_buf = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & free_id ) ; if ( ps_pic_buf == NULL ) { UWORD32 i , display_queued = 0 ; for ( i = 0 ; i < ( MAX_DISP_BUFS_NEW ) ; i ++ ) { if ( 0 != ps_dec -> u4_disp_buf_mapping [ i ] ) { display_queued = 1 ; break ; } } if ( 1 == display_queued ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } } else { if ( 1 == ps_dec -> u4_disp_buf_mapping [ free_id ] ) { ih264_buf_mgr_set_status ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; } else { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; break ; } } } } if ( ps_dec -> u1_flushfrm ) { if ( ps_dec -> u1_init_dec_flag == 0 ) { ps_dec -> u1_flushfrm = 0 ; return ( IV_FAIL ) ; } ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { if ( check_app_out_buf_size ( ps_dec ) != IV_SUCCESS ) { ps_dec_op -> u4_error_code = IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return ( IV_FAIL ) ; } ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; ps_dec -> u4_output_present = 1 ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; ps_dec_op -> u4_new_seq = 0 ; ps_dec_op -> u4_output_present = ps_dec -> u4_output_present ; ps_dec_op -> u4_progressive_frame_flag = ps_dec -> s_disp_op . u4_progressive_frame_flag ; ps_dec_op -> e_output_format = ps_dec -> s_disp_op . e_output_format ; ps_dec_op -> s_disp_frm_buf = ps_dec -> s_disp_op . s_disp_frm_buf ; ps_dec_op -> e4_fld_type = ps_dec -> s_disp_op . e4_fld_type ; ps_dec_op -> u4_ts = ps_dec -> s_disp_op . u4_ts ; ps_dec_op -> u4_disp_buf_id = ps_dec -> s_disp_op . u4_disp_buf_id ; ps_dec_op -> u4_is_ref_flag = - 1 ; ps_dec_op -> e_pic_type = IV_NA_FRAME ; ps_dec_op -> u4_frame_decoded_flag = 0 ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { return ( IV_SUCCESS ) ; } else return ( IV_FAIL ) ; } if ( ps_dec -> u1_res_changed == 1 ) { ih264d_init_decoder ( ps_dec ) ; } ps_dec -> u4_prev_nal_skipped = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> cur_dec_mb_num = 0 ; ps_dec -> cur_recon_mb_num = 0 ; ps_dec -> u4_first_slice_in_pic = 1 ; ps_dec -> u1_slice_header_done = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> u4_dec_thread_created = 0 ; ps_dec -> u4_bs_deblk_thread_created = 0 ; ps_dec -> u4_cur_bs_mb_num = 0 ; ps_dec -> u4_start_recon_deblk = 0 ; ps_dec -> u4_sps_cnt_in_process = 0 ; DEBUG_THREADS_PRINTF ( \"<S2SV_blank>Starting<S2SV_blank>process<S2SV_blank>call\\\\n\" ) ; ps_dec -> u4_pic_buf_got = 0 ; do { WORD32 buf_size ; pu1_buf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer + ps_dec_op -> u4_num_bytes_consumed ; u4_max_ofst = ps_dec_ip -> u4_num_Bytes - ps_dec_op -> u4_num_bytes_consumed ; if ( ( NULL == ps_dec -> pu1_bits_buf_dynamic ) && ( ps_dec -> i4_header_decoded & 1 ) ) { WORD32 size ; void * pv_buf ; void * pv_mem_ctxt = ps_dec -> pv_mem_ctxt ; size = MAX ( 256000 , ps_dec -> u2_pic_wd * ps_dec -> u2_pic_ht * 3 / 2 ) ; <S2SV_StartBug> pv_buf = ps_dec -> pf_aligned_alloc ( pv_mem_ctxt , 128 , size ) ; <S2SV_EndBug> RETURN_IF ( ( NULL == pv_buf ) , IV_FAIL ) ; ps_dec -> pu1_bits_buf_dynamic = pv_buf ; ps_dec -> u4_dynamic_bits_buf_size = size ; } if ( ps_dec -> pu1_bits_buf_dynamic ) { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_dynamic ; buf_size = ps_dec -> u4_dynamic_bits_buf_size ; } else { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_static ; buf_size = ps_dec -> u4_static_bits_buf_size ; } u4_next_is_aud = 0 ; buflen = ih264d_find_start_code ( pu1_buf , 0 , u4_max_ofst , & u4_length_of_start_code , & u4_next_is_aud ) ; if ( buflen == - 1 ) buflen = 0 ; buflen = MIN ( buflen , buf_size - 8 ) ; bytes_consumed = buflen + u4_length_of_start_code ; ps_dec_op -> u4_num_bytes_consumed += bytes_consumed ; { UWORD8 u1_firstbyte , u1_nal_ref_idc ; if ( ps_dec -> i4_app_skip_mode == IVD_SKIP_B ) { u1_firstbyte = * ( pu1_buf + u4_length_of_start_code ) ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_firstbyte ) ) ; if ( u1_nal_ref_idc == 0 ) { cur_slice_is_nonref = 1 ; continue ; } else { if ( 1 == cur_slice_is_nonref ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> e_pic_type = IV_B_FRAME ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } } } } if ( buflen ) { memcpy ( pu1_bitstrm_buf , pu1_buf + u4_length_of_start_code , buflen ) ; if ( ( buflen + 8 ) < buf_size ) { memset ( pu1_bitstrm_buf + buflen , 0 , 8 ) ; } u4_first_start_code_found = 1 ; } else { if ( u4_first_start_code_found == 0 ) { ps_dec -> i4_error_code = ERROR_START_CODE_NOT_FOUND ; ps_dec_op -> u4_error_code |= 1 << IVD_INSUFFICIENTDATA ; if ( ps_dec -> u4_pic_buf_got == 0 ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; ps_dec_op -> u4_error_code = ps_dec -> i4_error_code ; ps_dec_op -> u4_frame_decoded_flag = 0 ; return ( IV_FAIL ) ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } else { frame_data_left = 0 ; header_data_left = 0 ; continue ; } } ps_dec -> u4_return_to_app = 0 ; ret = ih264d_parse_nal_unit ( dec_hdl , ps_dec_op , pu1_bitstrm_buf , buflen ) ; if ( ret != OK ) { UWORD32 error = ih264d_map_error ( ret ) ; ps_dec_op -> u4_error_code = error | ret ; api_ret_value = IV_FAIL ; if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) || ( ret == IVD_DISP_FRM_ZERO_OP_BUF_SIZE ) ) { ps_dec -> u4_slice_start_code_found = 0 ; break ; } if ( ( ret == ERROR_INCOMPLETE_FRAME ) || ( ret == ERROR_DANGLING_FIELD_IN_PIC ) ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; api_ret_value = IV_FAIL ; break ; } if ( ret == ERROR_IN_LAST_SLICE_OF_PIC ) { api_ret_value = IV_FAIL ; break ; } } if ( ps_dec -> u4_return_to_app ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } header_data_left = ( ( ps_dec -> i4_decode_header == 1 ) && ( ps_dec -> i4_header_decoded != 3 ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; frame_data_left = ( ( ( ps_dec -> i4_decode_header == 0 ) && ( ( ps_dec -> u1_pic_decode_done == 0 ) || ( u4_next_is_aud == 1 ) ) ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; } while ( ( header_data_left == 1 ) || ( frame_data_left == 1 ) ) ; if ( ( ps_dec -> u4_pic_buf_got == 1 ) && ( ret != IVD_MEM_ALLOC_FAILED ) && ps_dec -> u2_total_mbs_coded < ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { WORD32 num_mb_skipped ; WORD32 prev_slice_err ; pocstruct_t temp_poc ; WORD32 ret1 ; WORD32 ht_in_mbs ; ht_in_mbs = ps_dec -> u2_pic_ht >> ( 4 + ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ; num_mb_skipped = ( ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u4_pic_buf_got == 0 ) ) prev_slice_err = 1 ; else prev_slice_err = 2 ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u2_total_mbs_coded == 0 ) ) prev_slice_err = 1 ; ret1 = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL , ps_dec -> ps_cur_slice -> u2_frame_num , & temp_poc , prev_slice_err ) ; if ( ( ret1 == ERROR_UNAVAIL_PICBUF_T ) || ( ret1 == ERROR_UNAVAIL_MVBUF_T ) || ( ret1 == ERROR_INV_SPS_PPS_T ) ) { ret = ret1 ; } } if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } if ( ret == IVD_RES_CHANGED ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; } return IV_FAIL ; } if ( ps_dec -> u1_separate_parse ) { if ( ps_dec -> u4_num_cores == 2 ) { if ( ( ps_dec -> u4_nmb_deblk == 0 ) && ( ps_dec -> u4_start_recon_deblk == 1 ) && ( ps_dec -> ps_cur_sps -> u1_mb_aff_flag == 0 ) ) { UWORD32 u4_num_mbs , u4_max_addr ; tfr_ctxt_t s_tfr_ctxt ; tfr_ctxt_t * ps_tfr_cxt = & s_tfr_ctxt ; pad_mgr_t * ps_pad_mgr = & ps_dec -> s_pad_mgr ; u4_max_addr = ( ps_dec -> u2_frm_wd_in_mbs * ps_dec -> u2_frm_ht_in_mbs ) - 1 ; ps_dec -> u4_cur_bs_mb_num = u4_max_addr + 1 ; ih264d_init_deblk_tfr_ctxt ( ps_dec , ps_pad_mgr , ps_tfr_cxt , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; u4_num_mbs = u4_max_addr - ps_dec -> u4_cur_deblk_mb_num + 1 ; DEBUG_PERF_PRINTF ( \"mbs<S2SV_blank>left<S2SV_blank>for<S2SV_blank>deblocking=<S2SV_blank>%d<S2SV_blank>\\\\n\" , u4_num_mbs ) ; if ( u4_num_mbs != 0 ) ih264d_check_mb_map_deblk ( ps_dec , u4_num_mbs , ps_tfr_cxt , 1 ) ; ps_dec -> u4_start_recon_deblk = 0 ; } } ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } } DATA_SYNC ( ) ; if ( ( ps_dec_op -> u4_error_code & 0xff ) != ERROR_DYNAMIC_RESOLUTION_NOT_SUPPORTED ) { ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; } if ( ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> i4_decode_header == 1 && ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> u4_prev_nal_skipped ) { ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } if ( ( ps_dec -> u4_pic_buf_got == 1 ) && ( ERROR_DANGLING_FIELD_IN_PIC != i4_err_status ) ) { if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) { if ( 1 == ps_dec -> ps_cur_slice -> u1_bottom_field_flag ) { ps_dec -> u1_top_bottom_decoded |= BOT_FIELD_ONLY ; } else { ps_dec -> u1_top_bottom_decoded |= TOP_FIELD_ONLY ; } } else { ps_dec -> u1_top_bottom_decoded = TOP_FIELD_ONLY | BOT_FIELD_ONLY ; } if ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) { ret = ih264d_deblock_display ( ps_dec ) ; } if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_dec -> i4_frametype = IV_IDR_FRAME ; } else if ( ps_dec -> i4_pic_type == B_SLICE ) { ps_dec -> i4_frametype = IV_B_FRAME ; } else if ( ps_dec -> i4_pic_type == P_SLICE ) { ps_dec -> i4_frametype = IV_P_FRAME ; } else if ( ps_dec -> i4_pic_type == I_SLICE ) { ps_dec -> i4_frametype = IV_I_FRAME ; } else { H264_DEC_DEBUG_PRINT ( \"Shouldn\\'t<S2SV_blank>come<S2SV_blank>here\\\\n\" ) ; } ps_dec -> i4_content_type = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded + 2 ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded - ps_dec -> ps_cur_slice -> u1_field_pic_flag ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } { if ( ( IVD_DECODE_FRAME_OUT == ps_dec -> e_frm_out_mode ) && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 1 ; } } ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; if ( ps_dec -> u4_output_present && ( ps_dec -> u4_fmt_conv_cur_row < ps_dec -> s_disp_frame_info . u4_y_ht ) ) { ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht - ps_dec -> u4_fmt_conv_cur_row ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; } if ( ps_dec -> i4_decode_header == 1 && ( ps_dec -> i4_header_decoded & 1 ) == 1 ) { ps_dec_op -> u4_progressive_frame_flag = 1 ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { if ( ( 0 == ps_dec -> ps_sps -> u1_frame_mbs_only_flag ) && ( 0 == ps_dec -> ps_sps -> u1_mb_aff_flag ) ) ps_dec_op -> u4_progressive_frame_flag = 0 ; } } if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } if ( ps_dec -> u4_pic_buf_got == 1 ) { if ( 1 == ps_dec -> u1_last_pic_not_decoded ) { ret = ih264d_end_of_pic_dispbuf_mgr ( ps_dec ) ; if ( ret != OK ) return ret ; ret = ih264d_end_of_pic ( ps_dec ) ; if ( ret != OK ) return ret ; } else { ret = ih264d_end_of_pic ( ps_dec ) ; if ( ret != OK ) return ret ; } } DATA_SYNC ( ) ; H264_DEC_DEBUG_PRINT ( \"The<S2SV_blank>num<S2SV_blank>bytes<S2SV_blank>consumed:<S2SV_blank>%d\\\\n\" , ps_dec_op -> u4_num_bytes_consumed ) ; return api_ret_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 128 , size + EXTRA_BS_OFFSET\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1874\n\n```\nCWE-20 static int security_context_to_sid_core ( const char * scontext , u32 scontext_len , u32 * sid , u32 def_sid , gfp_t gfp_flags , int force ) { char * scontext2 , * str = NULL ; struct context context ; <S2SV_StartBug> int rc = 0 ; <S2SV_EndBug> if ( ! ss_initialized ) { int i ; for ( i = 1 ; i < SECINITSID_NUM ; i ++ ) { if ( ! strcmp ( initial_sid_to_string [ i ] , scontext ) ) { * sid = i ; return 0 ; } } * sid = SECINITSID_KERNEL ; return 0 ; } * sid = SECSID_NULL ; scontext2 = kmalloc ( scontext_len + 1 , gfp_flags ) ; if ( ! scontext2 ) return - ENOMEM ; memcpy ( scontext2 , scontext , scontext_len ) ; scontext2 [ scontext_len ] = 0 ; if ( force ) { rc = - ENOMEM ; str = kstrdup ( scontext2 , gfp_flags ) ; if ( ! str ) goto out ; } read_lock ( & policy_rwlock ) ; rc = string_to_context_struct ( & policydb , & sidtab , scontext2 , scontext_len , & context , def_sid ) ; if ( rc == - EINVAL && force ) { context . str = str ; context . len = scontext_len ; str = NULL ; } else if ( rc ) goto out_unlock ; rc = sidtab_context_to_sid ( & sidtab , & context , sid ) ; context_destroy ( & context ) ; out_unlock : read_unlock ( & policy_rwlock ) ; out : kfree ( scontext2 ) ; kfree ( str ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc = 0 ; if ( ! scontext_len ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 long follow_hugetlb_page ( struct mm_struct * mm , struct vm_area_struct * vma , struct page * * pages , struct vm_area_struct * * vmas , unsigned long * position , unsigned long * nr_pages , long i , unsigned int flags , int * nonblocking ) { unsigned long pfn_offset ; unsigned long vaddr = * position ; unsigned long remainder = * nr_pages ; struct hstate * h = hstate_vma ( vma ) ; int err = - EFAULT ; while ( vaddr < vma -> vm_end && remainder ) { pte_t * pte ; spinlock_t * ptl = NULL ; int absent ; struct page * page ; if ( fatal_signal_pending ( current ) ) { remainder = 0 ; break ; } pte = huge_pte_offset ( mm , vaddr & huge_page_mask ( h ) , huge_page_size ( h ) ) ; if ( pte ) ptl = huge_pte_lock ( h , mm , pte ) ; absent = ! pte || huge_pte_none ( huge_ptep_get ( pte ) ) ; if ( absent && ( flags & FOLL_DUMP ) && ! hugetlbfs_pagecache_present ( h , vma , vaddr ) ) { if ( pte ) spin_unlock ( ptl ) ; remainder = 0 ; break ; } if ( absent || is_swap_pte ( huge_ptep_get ( pte ) ) || ( ( flags & FOLL_WRITE ) && ! huge_pte_write ( huge_ptep_get ( pte ) ) ) ) { vm_fault_t ret ; unsigned int fault_flags = 0 ; if ( pte ) spin_unlock ( ptl ) ; if ( flags & FOLL_WRITE ) fault_flags |= FAULT_FLAG_WRITE ; if ( nonblocking ) fault_flags |= FAULT_FLAG_ALLOW_RETRY ; if ( flags & FOLL_NOWAIT ) fault_flags |= FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_RETRY_NOWAIT ; if ( flags & FOLL_TRIED ) { VM_WARN_ON_ONCE ( fault_flags & FAULT_FLAG_ALLOW_RETRY ) ; fault_flags |= FAULT_FLAG_TRIED ; } ret = hugetlb_fault ( mm , vma , vaddr , fault_flags ) ; if ( ret & VM_FAULT_ERROR ) { err = vm_fault_to_errno ( ret , flags ) ; remainder = 0 ; break ; } if ( ret & VM_FAULT_RETRY ) { if ( nonblocking && ! ( fault_flags & FAULT_FLAG_RETRY_NOWAIT ) ) * nonblocking = 0 ; * nr_pages = 0 ; return i ; } continue ; } pfn_offset = ( vaddr & ~ huge_page_mask ( h ) ) >> PAGE_SHIFT ; page = pte_page ( huge_ptep_get ( pte ) ) ; <S2SV_StartBug> same_page : <S2SV_EndBug> if ( pages ) { pages [ i ] = mem_map_offset ( page , pfn_offset ) ; get_page ( pages [ i ] ) ; } if ( vmas ) vmas [ i ] = vma ; vaddr += PAGE_SIZE ; ++ pfn_offset ; -- remainder ; ++ i ; if ( vaddr < vma -> vm_end && remainder && pfn_offset < pages_per_huge_page ( h ) ) { goto same_page ; } spin_unlock ( ptl ) ; } * nr_pages = remainder ; * position = vaddr ; return i ? i : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( unlikely ( page_count ( page ) <= 0 ) ) { if ( pages ) { spin_unlock ( ptl ) ; remainder = 0 ; err = - ENOMEM ; break ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8065\n\n```\nCWE-119 static int crypto_ccm_auth ( struct aead_request * req , struct scatterlist * plain , unsigned int cryptlen ) { struct crypto_ccm_req_priv_ctx * pctx = crypto_ccm_reqctx ( req ) ; struct crypto_aead * aead = crypto_aead_reqtfm ( req ) ; struct crypto_ccm_ctx * ctx = crypto_aead_ctx ( aead ) ; AHASH_REQUEST_ON_STACK ( ahreq , ctx -> mac ) ; unsigned int assoclen = req -> assoclen ; struct scatterlist sg [ 3 ] ; <S2SV_StartBug> u8 odata [ 16 ] ; <S2SV_EndBug> u8 idata [ 16 ] ; int ilen , err ; err = format_input ( odata , req , cryptlen ) ; if ( err ) goto out ; sg_init_table ( sg , 3 ) ; sg_set_buf ( & sg [ 0 ] , odata , 16 ) ; if ( assoclen ) { ilen = format_adata ( idata , assoclen ) ; sg_set_buf ( & sg [ 1 ] , idata , ilen ) ; sg_chain ( sg , 3 , req -> src ) ; } else { ilen = 0 ; sg_chain ( sg , 2 , req -> src ) ; } ahash_request_set_tfm ( ahreq , ctx -> mac ) ; ahash_request_set_callback ( ahreq , pctx -> flags , NULL , NULL ) ; ahash_request_set_crypt ( ahreq , sg , NULL , assoclen + ilen + 16 ) ; err = crypto_ahash_init ( ahreq ) ; if ( err ) goto out ; err = crypto_ahash_update ( ahreq ) ; if ( err ) goto out ; ilen = 16 - ( assoclen + ilen ) % 16 ; if ( ilen < 16 ) { memset ( idata , 0 , ilen ) ; sg_init_table ( sg , 2 ) ; sg_set_buf ( & sg [ 0 ] , idata , ilen ) ; if ( plain ) sg_chain ( sg , 2 , plain ) ; plain = sg ; cryptlen += ilen ; } ahash_request_set_crypt ( ahreq , plain , pctx -> odata , cryptlen ) ; err = crypto_ahash_finup ( ahreq ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ; u8 * odata = pctx -> odata ; u8 * idata = pctx -> idata <S2SV_ModEnd> ; int ilen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3185\n\n```\nCWE-119 static void command_port_read_callback ( struct urb * urb ) { struct usb_serial_port * command_port = urb -> context ; struct whiteheat_command_private * command_info ; int status = urb -> status ; unsigned char * data = urb -> transfer_buffer ; int result ; command_info = usb_get_serial_port_data ( command_port ) ; if ( ! command_info ) { dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>command_info<S2SV_blank>is<S2SV_blank>NULL,<S2SV_blank>exiting.\\\\n\" , __func__ ) ; return ; } <S2SV_StartBug> if ( status ) { <S2SV_EndBug> dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>nonzero<S2SV_blank>urb<S2SV_blank>status:<S2SV_blank>%d\\\\n\" , __func__ , status ) ; if ( status != - ENOENT ) command_info -> command_finished = WHITEHEAT_CMD_FAILURE ; wake_up ( & command_info -> wait_command ) ; return ; } usb_serial_debug_data ( & command_port -> dev , __func__ , urb -> actual_length , data ) ; if ( data [ 0 ] == WHITEHEAT_CMD_COMPLETE ) { command_info -> command_finished = WHITEHEAT_CMD_COMPLETE ; wake_up ( & command_info -> wait_command ) ; } else if ( data [ 0 ] == WHITEHEAT_CMD_FAILURE ) { command_info -> command_finished = WHITEHEAT_CMD_FAILURE ; wake_up ( & command_info -> wait_command ) ; } else if ( data [ 0 ] == WHITEHEAT_EVENT ) { dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>event<S2SV_blank>received\\\\n\" , __func__ ) ; <S2SV_StartBug> } else if ( data [ 0 ] == WHITEHEAT_GET_DTR_RTS ) { <S2SV_EndBug> memcpy ( command_info -> result_buffer , & data [ 1 ] , <S2SV_StartBug> urb -> actual_length - 1 ) ; <S2SV_EndBug> command_info -> command_finished = WHITEHEAT_CMD_COMPLETE ; wake_up ( & command_info -> wait_command ) ; } else dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>bad<S2SV_blank>reply<S2SV_blank>from<S2SV_blank>firmware\\\\n\" , __func__ ) ; result = usb_submit_urb ( command_port -> read_urb , GFP_ATOMIC ) ; if ( result ) dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>failed<S2SV_blank>resubmitting<S2SV_blank>read<S2SV_blank>urb,<S2SV_blank>error<S2SV_blank>%d\\\\n\" , __func__ , result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ! urb -> actual_length ) { dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>empty<S2SV_blank>response,<S2SV_blank>exiting.\\\\n\" , __func__ ) ; return ; } if ( <S2SV_ModStart> else if ( ( <S2SV_ModStart> == WHITEHEAT_GET_DTR_RTS ) && ( <S2SV_ModEnd> urb -> actual_length <S2SV_ModStart> actual_length - 1 <= sizeof ( command_info -> result_buffer ) ) ) { memcpy ( command_info -> result_buffer , & data [ 1 ] , urb -> actual_length - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20542\n\n```\nCWE-119 LIBXSMM_API_INTERN void libxsmm_sparse_csr_reader ( libxsmm_generated_code * io_generated_code , const char * i_csr_file_in , unsigned int * * o_row_idx , unsigned int * * o_column_idx , double * * o_values , unsigned int * o_row_count , unsigned int * o_column_count , unsigned int * o_element_count ) { FILE * l_csr_file_handle ; const unsigned int l_line_length = 512 ; char l_line [ 512 + 1 ] ; unsigned int l_header_read = 0 ; unsigned int * l_row_idx_id = NULL ; unsigned int l_i = 0 ; l_csr_file_handle = fopen ( i_csr_file_in , \"r\" ) ; if ( l_csr_file_handle == NULL ) { LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_INPUT ) ; return ; } while ( fgets ( l_line , l_line_length , l_csr_file_handle ) != NULL ) { if ( strlen ( l_line ) == l_line_length ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_row_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csr_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_READ_LEN ) ; return ; } if ( l_line [ 0 ] == '%' ) { continue ; } else { if ( l_header_read == 0 ) { <S2SV_StartBug> if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%u\" , o_row_count , o_column_count , o_element_count ) == 3 ) { <S2SV_EndBug> * o_column_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_element_count ) ) ; * o_row_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( ( size_t ) ( * o_row_count ) + 1 ) ) ; * o_values = ( double * ) malloc ( sizeof ( double ) * ( * o_element_count ) ) ; l_row_idx_id = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_row_count ) ) ; if ( ( * o_row_idx == NULL ) || ( * o_column_idx == NULL ) || ( * o_values == NULL ) || ( l_row_idx_id == NULL ) ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_row_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csr_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSC_ALLOC_DATA ) ; return ; } memset ( * o_row_idx , 0 , sizeof ( unsigned int ) * ( ( size_t ) ( * o_row_count ) + 1 ) ) ; memset ( * o_column_idx , 0 , sizeof ( unsigned int ) * ( * o_element_count ) ) ; memset ( * o_values , 0 , sizeof ( double ) * ( * o_element_count ) ) ; memset ( l_row_idx_id , 0 , sizeof ( unsigned int ) * ( * o_row_count ) ) ; for ( l_i = 0 ; l_i <= * o_row_count ; ++ l_i ) ( * o_row_idx ) [ l_i ] = ( * o_element_count ) ; ( * o_row_idx ) [ 0 ] = 0 ; l_i = 0 ; l_header_read = 1 ; } else { LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_READ_DESC ) ; fclose ( l_csr_file_handle ) ; return ; } } else { unsigned int l_row = 0 , l_column = 0 ; double l_value = 0 ; if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%lf\" , & l_row , & l_column , & l_value ) != 3 ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_row_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csr_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_READ_ELEMS ) ; return ; } <S2SV_StartBug> l_row -- ; <S2SV_EndBug> l_column -- ; ( * o_column_idx ) [ l_i ] = l_column ; ( * o_values ) [ l_i ] = l_value ; l_i ++ ; l_row_idx_id [ l_row ] = 1 ; ( * o_row_idx ) [ l_row + 1 ] = l_i ; } } } fclose ( l_csr_file_handle ) ; if ( l_i != ( * o_element_count ) ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_row_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSR_LEN ) ; return ; } if ( l_row_idx_id != NULL ) { for ( l_i = 0 ; l_i < ( * o_row_count ) ; l_i ++ ) { if ( l_row_idx_id [ l_i ] == 0 ) { ( * o_row_idx ) [ l_i + 1 ] = ( * o_row_idx ) [ l_i ] ; } } free ( l_row_idx_id ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( 3 == <S2SV_ModStart> , o_element_count ) && 0 != * o_row_count && 0 != * o_column_count && 0 != * o_element_count ) <S2SV_ModEnd> { * o_column_idx <S2SV_ModStart> return ; } LIBXSMM_ASSERT ( 0 != l_row && 0 != l_column ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static struct buffer_head * ext4_xattr_cache_find ( struct inode * inode , struct ext4_xattr_header * header , <S2SV_StartBug> struct mb_cache_entry * * pce ) <S2SV_EndBug> { __u32 hash = le32_to_cpu ( header -> h_hash ) ; <S2SV_StartBug> struct mb_cache_entry * ce ; <S2SV_EndBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; if ( ! header -> h_hash ) return NULL ; ea_idebug ( inode , \"looking<S2SV_blank>for<S2SV_blank>cached<S2SV_blank>blocks<S2SV_blank>[%x]\" , ( int ) hash ) ; <S2SV_StartBug> again : <S2SV_EndBug> <S2SV_StartBug> ce = mb_cache_entry_find_first ( ext4_mb_cache , inode -> i_sb -> s_bdev , <S2SV_EndBug> hash ) ; while ( ce ) { struct buffer_head * bh ; <S2SV_StartBug> if ( IS_ERR ( ce ) ) { <S2SV_EndBug> if ( PTR_ERR ( ce ) == - EAGAIN ) goto again ; break ; } bh = sb_bread ( inode -> i_sb , ce -> e_block ) ; if ( ! bh ) { EXT4_ERROR_INODE ( inode , \"block<S2SV_blank>%lu<S2SV_blank>read<S2SV_blank>error\" , ( unsigned long ) ce -> e_block ) ; } else if ( le32_to_cpu ( BHDR ( bh ) -> h_refcount ) >= EXT4_XATTR_REFCOUNT_MAX ) { ea_idebug ( inode , \"block<S2SV_blank>%lu<S2SV_blank>refcount<S2SV_blank>%d>=%d\" , ( unsigned long ) ce -> e_block , le32_to_cpu ( BHDR ( bh ) -> h_refcount ) , EXT4_XATTR_REFCOUNT_MAX ) ; } else if ( ext4_xattr_cmp ( header , BHDR ( bh ) ) == 0 ) { * pce = ce ; return bh ; } brelse ( bh ) ; <S2SV_StartBug> ce = mb_cache_entry_find_next ( ce , inode -> i_sb -> s_bdev , hash ) ; <S2SV_EndBug> } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> header , struct mb2_cache_entry <S2SV_ModEnd> * * pce <S2SV_ModStart> ) ; struct mb2_cache_entry * ce ; struct mb2_cache <S2SV_ModEnd> * ext4_mb_cache = <S2SV_ModStart> hash ) ; ce = mb2_cache_entry_find_first <S2SV_ModEnd> ( ext4_mb_cache , <S2SV_ModStart> ( ext4_mb_cache , <S2SV_ModEnd> hash ) ; <S2SV_ModStart> * bh ; <S2SV_ModEnd> bh = sb_bread <S2SV_ModStart> ; ce = mb2_cache_entry_find_next ( ext4_mb_cache , ce <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 int hugetlb_reserve_pages ( struct inode * inode , long from , long to , struct vm_area_struct * vma , vm_flags_t vm_flags ) { long ret , chg ; struct hstate * h = hstate_inode ( inode ) ; <S2SV_StartBug> if ( vm_flags & VM_NORESERVE ) <S2SV_EndBug> return 0 ; if ( ! vma || vma -> vm_flags & VM_MAYSHARE ) chg = region_chg ( & inode -> i_mapping -> private_list , from , to ) ; else { struct resv_map * resv_map = resv_map_alloc ( ) ; if ( ! resv_map ) return - ENOMEM ; chg = to - from ; set_vma_resv_map ( vma , resv_map ) ; set_vma_resv_flags ( vma , HPAGE_RESV_OWNER ) ; } if ( chg < 0 ) return chg ; <S2SV_StartBug> if ( hugetlb_get_quota ( inode -> i_mapping , chg ) ) <S2SV_EndBug> return - ENOSPC ; ret = hugetlb_acct_memory ( h , chg ) ; if ( ret < 0 ) { <S2SV_StartBug> hugetlb_put_quota ( inode -> i_mapping , chg ) ; <S2SV_EndBug> return ret ; } if ( ! vma || vma -> vm_flags & VM_MAYSHARE ) region_add ( & inode -> i_mapping -> private_list , from , to ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode ) ; struct hugepage_subpool * spool = subpool_inode ( inode ) ; <S2SV_ModStart> ; if ( hugepage_subpool_get_pages ( spool <S2SV_ModEnd> , chg ) <S2SV_ModStart> 0 ) { hugepage_subpool_put_pages ( spool <S2SV_ModEnd> , chg )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-119 int mp_pack ( lua_State * L ) { int nargs = lua_gettop ( L ) ; int i ; mp_buf * buf ; if ( nargs == 0 ) return luaL_argerror ( L , 0 , \"MessagePack<S2SV_blank>pack<S2SV_blank>needs<S2SV_blank>input.\" ) ; if ( ! lua_checkstack ( L , nargs ) ) return luaL_argerror ( L , 0 , \"Too<S2SV_blank>many<S2SV_blank>arguments<S2SV_blank>for<S2SV_blank>MessagePack<S2SV_blank>pack.\" ) ; buf = mp_buf_new ( L ) ; for ( i = 1 ; i <= nargs ; i ++ ) { <S2SV_StartBug> lua_pushvalue ( L , i ) ; <S2SV_EndBug> mp_encode_lua_type ( L , buf , 0 ) ; lua_pushlstring ( L , ( char * ) buf -> b , buf -> len ) ; buf -> free += buf -> len ; buf -> len = 0 ; } mp_buf_free ( L , buf ) ; lua_concat ( L , nargs ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { luaL_checkstack ( L , 1 , \"in<S2SV_blank>function<S2SV_blank>mp_check\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13223\n\n```\nCWE-617 static int vorbis_finish_frame ( stb_vorbis * f , int len , int left , int right ) { int prev , i , j ; if ( f -> previous_length ) { int i , j , n = f -> previous_length ; <S2SV_StartBug> float * w = get_window ( f , n ) ; <S2SV_EndBug> for ( i = 0 ; i < f -> channels ; ++ i ) { for ( j = 0 ; j < n ; ++ j ) f -> channel_buffers [ i ] [ left + j ] = f -> channel_buffers [ i ] [ left + j ] * w [ j ] + f -> previous_window [ i ] [ j ] * w [ n - 1 - j ] ; } } prev = f -> previous_length ; f -> previous_length = len - right ; for ( i = 0 ; i < f -> channels ; ++ i ) for ( j = 0 ; right + j < len ; ++ j ) f -> previous_window [ i ] [ j ] = f -> channel_buffers [ i ] [ right + j ] ; if ( ! prev ) return 0 ; if ( len < right ) right = len ; f -> samples_output += right - left ; return right - left ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , n ) ; if ( w == NULL ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0205\n\n```\nCWE-119 static inline void queue_unlock ( struct futex_q * q , struct futex_hash_bucket * hb ) { spin_unlock ( & hb -> lock ) ; <S2SV_StartBug> drop_futex_key_refs ( & q -> key ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lock ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 void Con_Dump_f ( void ) { int l , x , i ; short * line ; fileHandle_t f ; int bufferlen ; char * buffer ; char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { Com_Printf ( \"usage:<S2SV_blank>condump<S2SV_blank><filename>\\\\n\" ) ; return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; <S2SV_StartBug> COM_DefaultExtension ( filename , sizeof ( filename ) , \".txt\" ) ; <S2SV_EndBug> f = FS_FOpenFileWrite ( filename ) ; if ( ! f ) { Com_Printf ( \"ERROR:<S2SV_blank>couldn\\'t<S2SV_blank>open<S2SV_blank>%s.\\\\n\" , filename ) ; return ; } Com_Printf ( \"Dumped<S2SV_blank>console<S2SV_blank>text<S2SV_blank>to<S2SV_blank>%s.\\\\n\" , filename ) ; for ( l = con . current - con . totallines + 1 ; l <= con . current ; l ++ ) { line = con . text + ( l % con . totallines ) * con . linewidth ; for ( x = 0 ; x < con . linewidth ; x ++ ) if ( ( line [ x ] & 0xff ) != '<S2SV_blank>' ) break ; if ( x != con . linewidth ) break ; } # ifdef _WIN32 bufferlen = con . linewidth + 3 * sizeof ( char ) ; # else bufferlen = con . linewidth + 2 * sizeof ( char ) ; # endif buffer = Hunk_AllocateTempMemory ( bufferlen ) ; buffer [ bufferlen - 1 ] = 0 ; for ( ; l <= con . current ; l ++ ) { line = con . text + ( l % con . totallines ) * con . linewidth ; for ( i = 0 ; i < con . linewidth ; i ++ ) buffer [ i ] = line [ i ] & 0xff ; for ( x = con . linewidth - 1 ; x >= 0 ; x -- ) { if ( buffer [ x ] == '<S2SV_blank>' ) buffer [ x ] = 0 ; else break ; } # ifdef _WIN32 Q_strcat ( buffer , bufferlen , \"\\\\r\\\\n\" ) ; # else Q_strcat ( buffer , bufferlen , \"\\\\n\" ) ; # endif FS_Write ( buffer , strlen ( buffer ) , f ) ; } Hunk_FreeTempMemory ( buffer ) ; FS_FCloseFile ( f ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \".txt\" ) ; if ( ! COM_CompareExtension ( filename , \".txt\" ) ) { Com_Printf ( \"Con_Dump_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".txt\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2671\n\n```\nCWE-000 void ping_unhash ( struct sock * sk ) { struct inet_sock * isk = inet_sk ( sk ) ; pr_debug ( \"ping_unhash(isk=%p,isk->num=%u)\\\\n\" , isk , isk -> inet_num ) ; <S2SV_StartBug> if ( sk_hashed ( sk ) ) { <S2SV_EndBug> <S2SV_StartBug> write_lock_bh ( & ping_table . lock ) ; <S2SV_EndBug> hlist_nulls_del ( & sk -> sk_nulls_node ) ; sk_nulls_node_init ( & sk -> sk_nulls_node ) ; sock_put ( sk ) ; isk -> inet_num = 0 ; isk -> inet_sport = 0 ; sock_prot_inuse_add ( sock_net ( sk ) , sk -> sk_prot , - 1 ) ; <S2SV_StartBug> write_unlock_bh ( & ping_table . lock ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inet_num ) ; write_lock_bh ( & ping_table . lock ) ; <S2SV_ModStart> ) ) { <S2SV_ModEnd> hlist_nulls_del ( & <S2SV_ModStart> 1 ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3181\n\n```\nCWE-119 static int magicmouse_raw_event ( struct hid_device * hdev , struct hid_report * report , u8 * data , int size ) { struct magicmouse_sc * msc = hid_get_drvdata ( hdev ) ; struct input_dev * input = msc -> input ; int x = 0 , y = 0 , ii , clicks = 0 , npoints ; switch ( data [ 0 ] ) { case TRACKPAD_REPORT_ID : if ( size < 4 || ( ( size - 4 ) % 9 ) != 0 ) return 0 ; npoints = ( size - 4 ) / 9 ; <S2SV_StartBug> msc -> ntouches = 0 ; <S2SV_EndBug> for ( ii = 0 ; ii < npoints ; ii ++ ) magicmouse_emit_touch ( msc , ii , data + ii * 9 + 4 ) ; clicks = data [ 1 ] ; break ; case MOUSE_REPORT_ID : if ( size < 6 || ( ( size - 6 ) % 8 ) != 0 ) return 0 ; <S2SV_StartBug> npoints = ( size - 6 ) / 8 ; <S2SV_EndBug> msc -> ntouches = 0 ; for ( ii = 0 ; ii < npoints ; ii ++ ) magicmouse_emit_touch ( msc , ii , data + ii * 8 + 6 ) ; x = ( int ) ( ( ( data [ 3 ] & 0x0c ) << 28 ) | ( data [ 1 ] << 22 ) ) >> 22 ; y = ( int ) ( ( ( data [ 3 ] & 0x30 ) << 26 ) | ( data [ 2 ] << 22 ) ) >> 22 ; clicks = data [ 3 ] ; break ; case DOUBLE_REPORT_ID : magicmouse_raw_event ( hdev , report , data + 2 , data [ 1 ] ) ; magicmouse_raw_event ( hdev , report , data + 2 + data [ 1 ] , size - 2 - data [ 1 ] ) ; break ; default : return 0 ; } if ( input -> id . product == USB_DEVICE_ID_APPLE_MAGICMOUSE ) { magicmouse_emit_buttons ( msc , clicks & 3 ) ; input_report_rel ( input , REL_X , x ) ; input_report_rel ( input , REL_Y , y ) ; } else { input_report_key ( input , BTN_MOUSE , clicks & 1 ) ; input_mt_report_pointer_emulation ( input , true ) ; } input_sync ( input ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> / 9 ; if ( npoints > 15 ) { hid_warn ( hdev , \"invalid<S2SV_blank>size<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>for<S2SV_blank>TRACKPAD_REPORT_ID\\\\n\" , size ) ; return 0 ; } <S2SV_ModStart> / 8 ; if ( npoints > 15 ) { hid_warn ( hdev , \"invalid<S2SV_blank>size<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>for<S2SV_blank>MOUSE_REPORT_ID\\\\n\" , size ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13000\n\n```\nCWE-125 u_int ieee802_15_4_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int caplen = h -> caplen ; <S2SV_StartBug> int hdrlen ; <S2SV_EndBug> uint16_t fc ; uint8_t seq ; <S2SV_StartBug> if ( caplen < 3 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[|802.15.4]<S2SV_blank>%x\" , caplen ) ) ; return caplen ; } fc = EXTRACT_LE_16BITS ( p ) ; hdrlen = extract_header_length ( fc ) ; seq = EXTRACT_LE_8BITS ( p + 2 ) ; p += 3 ; caplen -= 3 ; ND_PRINT ( ( ndo , \"IEEE<S2SV_blank>802.15.4<S2SV_blank>%s<S2SV_blank>packet<S2SV_blank>\" , ftypes [ fc & 0x7 ] ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"seq<S2SV_blank>%02x<S2SV_blank>\" , seq ) ) ; if ( hdrlen == - 1 ) { ND_PRINT ( ( ndo , \"invalid!<S2SV_blank>\" ) ) ; return caplen ; } if ( ! ndo -> ndo_vflag ) { p += hdrlen ; caplen -= hdrlen ; } else { uint16_t panid = 0 ; <S2SV_StartBug> switch ( ( fc >> 10 ) & 0x3 ) { <S2SV_EndBug> case 0x00 : ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case 0x01 : ND_PRINT ( ( ndo , \"reserved<S2SV_blank>destination<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return 0 ; case 0x02 : panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p ) ) ) ; <S2SV_EndBug> p += 2 ; break ; <S2SV_StartBug> case 0x03 : <S2SV_EndBug> panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; <S2SV_EndBug> p += 8 ; <S2SV_StartBug> break ; <S2SV_EndBug> } <S2SV_StartBug> ND_PRINT ( ( ndo , \"<<S2SV_blank>\" ) ) ; <S2SV_EndBug> <S2SV_StartBug> switch ( ( fc >> 14 ) & 0x3 ) { <S2SV_EndBug> <S2SV_StartBug> case 0x00 : <S2SV_EndBug> ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; <S2SV_StartBug> case 0x01 : <S2SV_EndBug> ND_PRINT ( ( ndo , \"reserved<S2SV_blank>source<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return 0 ; <S2SV_StartBug> case 0x02 : <S2SV_EndBug> <S2SV_StartBug> if ( ! ( fc & ( 1 << 6 ) ) ) { <S2SV_EndBug> panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p ) ) ) ; p += 2 ; <S2SV_StartBug> break ; <S2SV_EndBug> <S2SV_StartBug> case 0x03 : <S2SV_EndBug> <S2SV_StartBug> if ( ! ( fc & ( 1 << 6 ) ) ) { <S2SV_EndBug> panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; p += 8 ; <S2SV_StartBug> break ; <S2SV_EndBug> } <S2SV_StartBug> caplen -= hdrlen ; <S2SV_EndBug> } if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , caplen ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> caplen ; u_int <S2SV_ModEnd> hdrlen ; uint16_t <S2SV_ModStart> uint8_t seq ; <S2SV_ModEnd> uint16_t panid = <S2SV_ModStart> = 0 ; if ( caplen < 3 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return caplen ; } hdrlen = 3 ; fc = EXTRACT_LE_16BITS ( p ) ; seq = EXTRACT_LE_8BITS ( p + 2 ) ; p += 3 ; caplen -= 3 ; ND_PRINT ( ( ndo , \"IEEE<S2SV_blank>802.15.4<S2SV_blank>%s<S2SV_blank>packet<S2SV_blank>\" , ftypes [ FC_FRAME_TYPE ( fc ) ] ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"seq<S2SV_blank>%02x<S2SV_blank>\" , seq ) ) ; switch ( FC_DEST_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( fc & FC_PAN_ID_COMPRESSION ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>destination<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return hdrlen ; case FC_ADDRESSING_MODE_SHORT : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } <S2SV_ModEnd> panid = EXTRACT_LE_16BITS <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_ModStart> EXTRACT_LE_16BITS ( p + 2 ) ) ) ; p += 2 ; caplen -= 2 ; hdrlen <S2SV_ModEnd> += 2 ; <S2SV_ModStart> break ; case FC_ADDRESSING_MODE_LONG : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } <S2SV_ModEnd> panid = EXTRACT_LE_16BITS <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_ModStart> ndo , p + 2 <S2SV_ModStart> += 8 ; caplen -= 8 ; hdrlen += 8 ; <S2SV_ModStart> break ; } if ( ndo -> ndo_vflag ) <S2SV_ModStart> ; switch ( FC_SRC_ADDRESSING_MODE ( fc ) <S2SV_ModEnd> ) { case <S2SV_ModStart> ) { case FC_ADDRESSING_MODE_NONE : if ( ndo -> ndo_vflag ) <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> 0 ; case FC_ADDRESSING_MODE_SHORT <S2SV_ModEnd> : if ( <S2SV_ModStart> ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } <S2SV_ModEnd> panid = EXTRACT_LE_16BITS <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; <S2SV_ModStart> break ; case FC_ADDRESSING_MODE_LONG <S2SV_ModEnd> : if ( <S2SV_ModStart> ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } <S2SV_ModEnd> panid = EXTRACT_LE_16BITS <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> += 8 ; caplen -= 8 ; hdrlen += 8 ; <S2SV_ModStart> break ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> ) ; return hdrlen <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4254\n\n```\nCWE-20 static int validate_event ( struct pmu_hw_events * hw_events , struct perf_event * event ) { struct arm_pmu * armpmu = to_arm_pmu ( event -> pmu ) ; <S2SV_StartBug> struct pmu * leader_pmu = event -> group_leader -> pmu ; <S2SV_EndBug> if ( event -> pmu != leader_pmu || event -> state < PERF_EVENT_STATE_OFF ) return 1 ; if ( event -> state == PERF_EVENT_STATE_OFF && ! event -> attr . enable_on_exec ) return 1 ; return armpmu -> get_event_idx ( hw_events , event ) >= 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> group_leader -> pmu ; if ( is_software_event ( event ) ) return 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7613\n\n```\nCWE-362 static int newque ( struct ipc_namespace * ns , struct ipc_params * params ) { struct msg_queue * msq ; int id , retval ; key_t key = params -> key ; int msgflg = params -> flg ; msq = ipc_rcu_alloc ( sizeof ( * msq ) ) ; if ( ! msq ) return - ENOMEM ; msq -> q_perm . mode = msgflg & S_IRWXUGO ; msq -> q_perm . key = key ; msq -> q_perm . security = NULL ; retval = security_msg_queue_alloc ( msq ) ; if ( retval ) { ipc_rcu_putref ( msq , ipc_rcu_free ) ; return retval ; } <S2SV_StartBug> id = ipc_addid ( & msg_ids ( ns ) , & msq -> q_perm , ns -> msg_ctlmni ) ; <S2SV_EndBug> if ( id < 0 ) { ipc_rcu_putref ( msq , msg_rcu_free ) ; return id ; } <S2SV_StartBug> msq -> q_stime = msq -> q_rtime = 0 ; <S2SV_EndBug> msq -> q_ctime = get_seconds ( ) ; msq -> q_cbytes = msq -> q_qnum = 0 ; msq -> q_qbytes = ns -> msg_ctlmnb ; msq -> q_lspid = msq -> q_lrpid = 0 ; INIT_LIST_HEAD ( & msq -> q_messages ) ; INIT_LIST_HEAD ( & msq -> q_receivers ) ; INIT_LIST_HEAD ( & msq -> q_senders ) ; ipc_unlock_object ( & msq -> q_perm ) ; rcu_read_unlock ( ) ; return msq -> q_perm . id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> retval ; } msq -> q_stime = msq -> q_rtime = 0 ; msq -> q_ctime = get_seconds ( ) ; msq -> q_cbytes = msq -> q_qnum = 0 ; msq -> q_qbytes = ns -> msg_ctlmnb ; msq -> q_lspid = msq -> q_lrpid = 0 ; INIT_LIST_HEAD ( & msq -> q_messages ) ; INIT_LIST_HEAD ( & msq -> q_receivers ) ; INIT_LIST_HEAD ( & msq -> q_senders ) ; <S2SV_ModStart> id ; } <S2SV_ModEnd> ipc_unlock_object ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7998\n\n```\nCWE-362 static void * vips_foreign_load_start ( VipsImage * out , void * a , void * b ) { VipsForeignLoad * load = VIPS_FOREIGN_LOAD ( b ) ; <S2SV_StartBug> VipsForeignLoadClass * class = VIPS_FOREIGN_LOAD_GET_CLASS ( load ) ; <S2SV_EndBug> if ( ! load -> real ) { if ( ! ( load -> real = vips_foreign_load_temp ( load ) ) ) return ( NULL ) ; # ifdef DEBUG printf ( \"vips_foreign_load_start:<S2SV_blank>triggering<S2SV_blank>->load()\\\\n\" ) ; # endif load -> real -> progress_signal = load -> out ; g_object_set_qdata ( G_OBJECT ( load -> real ) , vips__foreign_load_operation , load ) ; if ( class -> load ( load ) || <S2SV_StartBug> vips_image_pio_input ( load -> real ) ) <S2SV_EndBug> return ( NULL ) ; if ( ! vips_foreign_load_iscompat ( load -> real , out ) ) <S2SV_StartBug> return ( NULL ) ; <S2SV_EndBug> vips_image_pipelinev ( load -> out , load -> out -> dhint , load -> real , NULL ) ; } return ( vips_region_new ( load -> real ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VIPS_FOREIGN_LOAD_GET_CLASS ( load ) ; if ( load -> error ) return ( NULL <S2SV_ModStart> -> real ) || <S2SV_ModEnd> vips_foreign_load_iscompat ( load <S2SV_ModStart> out ) ) { vips_operation_invalidate ( VIPS_OPERATION ( load ) ) ; load -> error = TRUE ; return ( NULL ) ; } <S2SV_ModEnd> vips_image_pipelinev ( load\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_fix_contexts ( MACROBLOCKD * x ) { if ( x -> mode_info_context -> mbmi . mode != B_PRED && x -> mode_info_context -> mbmi . mode != SPLITMV ) { <S2SV_StartBug> vpx_memset ( x -> above_context , 0 , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( x -> left_context , 0 , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> } else { <S2SV_StartBug> vpx_memset ( x -> above_context , 0 , sizeof ( ENTROPY_CONTEXT_PLANES ) - 1 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( x -> left_context , 0 , sizeof ( ENTROPY_CONTEXT_PLANES ) - 1 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SPLITMV ) { memset <S2SV_ModEnd> ( x -> <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( x -> <S2SV_ModStart> } else { memset <S2SV_ModEnd> ( x -> <S2SV_ModStart> 1 ) ; memset <S2SV_ModEnd> ( x ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3119\n\n```\nCWE-000 static krb5_error_code process_db_args ( krb5_context context , char * * db_args , xargs_t * xargs , OPERATION optype ) { int i = 0 ; krb5_error_code st = 0 ; char * arg = NULL , * arg_val = NULL ; char * * dptr = NULL ; unsigned int arg_val_len = 0 ; if ( db_args ) { for ( i = 0 ; db_args [ i ] ; ++ i ) { arg = strtok_r ( db_args [ i ] , \"=\" , & arg_val ) ; <S2SV_StartBug> if ( strcmp ( arg , TKTPOLICY_ARG ) == 0 ) { <S2SV_EndBug> dptr = & xargs -> tktpolicydn ; } else { if ( strcmp ( arg , USERDN_ARG ) == 0 ) { if ( optype == MODIFY_PRINCIPAL || xargs -> dn != NULL || xargs -> containerdn != NULL || xargs -> linkdn != NULL ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>not<S2SV_blank>supported\" ) , arg ) ; goto cleanup ; } dptr = & xargs -> dn ; } else if ( strcmp ( arg , CONTAINERDN_ARG ) == 0 ) { if ( optype == MODIFY_PRINCIPAL || xargs -> dn != NULL || xargs -> containerdn != NULL ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>not<S2SV_blank>supported\" ) , arg ) ; goto cleanup ; } dptr = & xargs -> containerdn ; } else if ( strcmp ( arg , LINKDN_ARG ) == 0 ) { if ( xargs -> dn != NULL || xargs -> linkdn != NULL ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>not<S2SV_blank>supported\" ) , arg ) ; goto cleanup ; } dptr = & xargs -> linkdn ; } else { st = EINVAL ; k5_setmsg ( context , st , _ ( \"unknown<S2SV_blank>option:<S2SV_blank>%s\" ) , arg ) ; goto cleanup ; } xargs -> dn_from_kbd = TRUE ; if ( arg_val == NULL || strlen ( arg_val ) == 0 ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>value<S2SV_blank>missing\" ) , arg ) ; goto cleanup ; } } if ( arg_val == NULL ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>value<S2SV_blank>missing\" ) , arg ) ; goto cleanup ; } arg_val_len = strlen ( arg_val ) + 1 ; if ( strcmp ( arg , TKTPOLICY_ARG ) == 0 ) { if ( ( st = krb5_ldap_name_to_policydn ( context , arg_val , dptr ) ) != 0 ) goto cleanup ; } else { * dptr = k5memdup ( arg_val , arg_val_len , & st ) ; if ( * dptr == NULL ) goto cleanup ; } } } cleanup : return st ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg_val ) ; arg = ( arg != NULL ) ? arg : \"\" ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10128\n\n```\nCWE-119 int git_pkt_parse_line ( git_pkt * * head , const char * line , const char * * out , size_t bufflen ) { int ret ; int32_t len ; if ( bufflen > 0 && bufflen < PKT_LEN_SIZE ) return GIT_EBUFS ; len = parse_len ( line ) ; if ( len < 0 ) { if ( bufflen >= 4 && ! git__prefixcmp ( line , \"PACK\" ) ) { giterr_clear ( ) ; * out = line ; return pack_pkt ( head ) ; } return ( int ) len ; } if ( bufflen > 0 && bufflen < ( size_t ) len ) return GIT_EBUFS ; <S2SV_StartBug> line += PKT_LEN_SIZE ; <S2SV_EndBug> if ( len == PKT_LEN_SIZE ) { * head = NULL ; * out = line ; return 0 ; } if ( len == 0 ) { * out = line ; return flush_pkt ( head ) ; } len -= PKT_LEN_SIZE ; if ( * line == GIT_SIDE_BAND_DATA ) ret = data_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_PROGRESS ) ret = sideband_progress_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_ERROR ) ret = sideband_error_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ACK\" ) ) ret = ack_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"NAK\" ) ) ret = nak_pkt ( head ) ; else if ( ! git__prefixcmp ( line , \"ERR<S2SV_blank>\" ) ) ret = err_pkt ( head , line , len ) ; else if ( * line == '#' ) ret = comment_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ok\" ) ) ret = ok_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ng\" ) ) ret = ng_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"unpack\" ) ) ret = unpack_pkt ( head , line , len ) ; else ret = ref_pkt ( head , line , len ) ; * out = line + len ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return GIT_EBUFS ; if ( len != 0 && len < PKT_LEN_SIZE ) return GIT_ERROR ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 static struct fileIdentDesc * udf_find_entry ( struct inode * dir , const struct qstr * child , struct udf_fileident_bh * fibh , struct fileIdentDesc * cfi ) { struct fileIdentDesc * fi = NULL ; loff_t f_pos ; int block , flen ; unsigned char * fname = NULL ; unsigned char * nameptr ; uint8_t lfi ; uint16_t liu ; loff_t size ; struct kernel_lb_addr eloc ; uint32_t elen ; sector_t offset ; struct extent_position epos = { } ; struct udf_inode_info * dinfo = UDF_I ( dir ) ; int isdotdot = child -> len == 2 && child -> name [ 0 ] == '.' && child -> name [ 1 ] == '.' ; size = udf_ext0_offset ( dir ) + dir -> i_size ; f_pos = udf_ext0_offset ( dir ) ; fibh -> sbh = fibh -> ebh = NULL ; fibh -> soffset = fibh -> eoffset = f_pos & ( dir -> i_sb -> s_blocksize - 1 ) ; if ( dinfo -> i_alloc_type != ICBTAG_FLAG_AD_IN_ICB ) { if ( inode_bmap ( dir , f_pos >> dir -> i_sb -> s_blocksize_bits , & epos , & eloc , & elen , & offset ) != ( EXT_RECORDED_ALLOCATED >> 30 ) ) goto out_err ; block = udf_get_lb_pblock ( dir -> i_sb , & eloc , offset ) ; if ( ( ++ offset << dir -> i_sb -> s_blocksize_bits ) < elen ) { if ( dinfo -> i_alloc_type == ICBTAG_FLAG_AD_SHORT ) epos . offset -= sizeof ( struct short_ad ) ; else if ( dinfo -> i_alloc_type == ICBTAG_FLAG_AD_LONG ) epos . offset -= sizeof ( struct long_ad ) ; } else offset = 0 ; fibh -> sbh = fibh -> ebh = udf_tread ( dir -> i_sb , block ) ; if ( ! fibh -> sbh ) goto out_err ; } fname = kmalloc ( UDF_NAME_LEN , GFP_NOFS ) ; if ( ! fname ) goto out_err ; while ( f_pos < size ) { fi = udf_fileident_read ( dir , & f_pos , fibh , cfi , & epos , & eloc , & elen , & offset ) ; if ( ! fi ) goto out_err ; liu = le16_to_cpu ( cfi -> lengthOfImpUse ) ; lfi = cfi -> lengthFileIdent ; if ( fibh -> sbh == fibh -> ebh ) { nameptr = fi -> fileIdent + liu ; } else { int poffset ; poffset = fibh -> soffset + sizeof ( struct fileIdentDesc ) + liu + lfi ; if ( poffset >= lfi ) nameptr = ( uint8_t * ) ( fibh -> ebh -> b_data + poffset - lfi ) ; else { nameptr = fname ; memcpy ( nameptr , fi -> fileIdent + liu , lfi - poffset ) ; memcpy ( nameptr + lfi - poffset , fibh -> ebh -> b_data , poffset ) ; } } if ( ( cfi -> fileCharacteristics & FID_FILE_CHAR_DELETED ) != 0 ) { if ( ! UDF_QUERY_FLAG ( dir -> i_sb , UDF_FLAG_UNDELETE ) ) continue ; } if ( ( cfi -> fileCharacteristics & FID_FILE_CHAR_HIDDEN ) != 0 ) { if ( ! UDF_QUERY_FLAG ( dir -> i_sb , UDF_FLAG_UNHIDE ) ) continue ; } if ( ( cfi -> fileCharacteristics & FID_FILE_CHAR_PARENT ) && isdotdot ) goto out_ok ; if ( ! lfi ) continue ; <S2SV_StartBug> flen = udf_get_filename ( dir -> i_sb , nameptr , fname , lfi ) ; <S2SV_EndBug> if ( flen && udf_match ( flen , fname , child -> len , child -> name ) ) goto out_ok ; } out_err : fi = NULL ; if ( fibh -> sbh != fibh -> ebh ) brelse ( fibh -> ebh ) ; brelse ( fibh -> sbh ) ; out_ok : brelse ( epos . bh ) ; kfree ( fname ) ; return fi ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , nameptr , lfi , fname , UDF_NAME_LEN <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void Triangle ( double x1 , double y1 , double x2 , double y2 , double x3 , double y3 ) { <S2SV_StartBug> outpos += <S2SV_EndBug> sprintf ( outpos , \"\\\\n<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>m<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>l<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>l<S2SV_blank>h\" , x1 , y1 , x2 , y2 , x3 , y3 ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> y3 ) { sprintf ( outputbuffer <S2SV_ModEnd> , \"\\\\n<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>m<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>l<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>l<S2SV_blank>h\" , <S2SV_ModStart> y3 ) ; sendClean ( outputbuffer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadHDRImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char format [ MaxTextExtent ] , keyword [ MaxTextExtent ] , tag [ MaxTextExtent ] , value [ MaxTextExtent ] ; double gamma ; Image * image ; int c ; MagickBooleanType status , value_expected ; register PixelPacket * q ; register unsigned char * p ; register ssize_t i , x ; ssize_t count , y ; unsigned char * end , pixel [ 4 ] , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> columns = 0 ; image -> rows = 0 ; * format = '\\\\0' ; c = ReadBlobByte ( image ) ; if ( c == EOF ) { image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } while ( isgraph ( c ) && ( image -> columns == 0 ) && ( image -> rows == 0 ) ) { if ( c == ( int ) '#' ) { char * comment ; register char * p ; size_t length ; length = MaxTextExtent ; comment = AcquireString ( ( char * ) NULL ) ; for ( p = comment ; comment != ( char * ) NULL ; p ++ ) { c = ReadBlobByte ( image ) ; if ( ( c == EOF ) || ( c == ( int ) '\\\\n' ) ) break ; if ( ( size_t ) ( p - comment + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; comment = ( char * ) ResizeQuantumMemory ( comment , length + MaxTextExtent , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) break ; p = comment + strlen ( comment ) ; } * p = ( char ) c ; } if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; * p = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment ) ; comment = DestroyString ( comment ) ; c = ReadBlobByte ( image ) ; } else if ( isalnum ( c ) == MagickFalse ) c = ReadBlobByte ( image ) ; else { register char * p ; p = keyword ; do { if ( ( size_t ) ( p - keyword ) < ( MaxTextExtent - 1 ) ) * p ++ = c ; c = ReadBlobByte ( image ) ; } while ( isalnum ( c ) || ( c == '_' ) ) ; * p = '\\\\0' ; value_expected = MagickFalse ; while ( ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) || ( c == '=' ) ) { if ( c == '=' ) value_expected = MagickTrue ; c = ReadBlobByte ( image ) ; } if ( LocaleCompare ( keyword , \"Y\" ) == 0 ) value_expected = MagickTrue ; if ( value_expected == MagickFalse ) continue ; p = value ; while ( ( c != '\\\\n' ) && ( c != '\\\\0' ) ) { if ( ( size_t ) ( p - value ) < ( MaxTextExtent - 1 ) ) * p ++ = c ; c = ReadBlobByte ( image ) ; } * p = '\\\\0' ; switch ( * keyword ) { case 'F' : case 'f' : { if ( LocaleCompare ( keyword , \"format\" ) == 0 ) { ( void ) CopyMagickString ( format , value , MaxTextExtent ) ; break ; } ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value ) ; break ; } case 'G' : case 'g' : { if ( LocaleCompare ( keyword , \"gamma\" ) == 0 ) { image -> gamma = StringToDouble ( value , ( char * * ) NULL ) ; break ; } ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value ) ; break ; } case 'P' : case 'p' : { if ( LocaleCompare ( keyword , \"primaries\" ) == 0 ) { float chromaticity [ 6 ] , white_point [ 2 ] ; ( void ) sscanf ( value , \"%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g<S2SV_blank>%g\" , & chromaticity [ 0 ] , & chromaticity [ 1 ] , & chromaticity [ 2 ] , & chromaticity [ 3 ] , & chromaticity [ 4 ] , & chromaticity [ 5 ] , & white_point [ 0 ] , & white_point [ 1 ] ) ; image -> chromaticity . red_primary . x = chromaticity [ 0 ] ; image -> chromaticity . red_primary . y = chromaticity [ 1 ] ; image -> chromaticity . green_primary . x = chromaticity [ 2 ] ; image -> chromaticity . green_primary . y = chromaticity [ 3 ] ; image -> chromaticity . blue_primary . x = chromaticity [ 4 ] ; image -> chromaticity . blue_primary . y = chromaticity [ 5 ] ; image -> chromaticity . white_point . x = white_point [ 0 ] , image -> chromaticity . white_point . y = white_point [ 1 ] ; break ; } ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value ) ; break ; } case 'Y' : case 'y' : { if ( strcmp ( keyword , \"Y\" ) == 0 ) { int height , width ; ( void ) sscanf ( value , \"%d<S2SV_blank>+X<S2SV_blank>%d\" , & height , & width ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; break ; } ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value ) ; break ; } default : { ( void ) FormatLocaleString ( tag , MaxTextExtent , \"hdr:%s\" , keyword ) ; ( void ) SetImageProperty ( image , tag , value ) ; break ; } } } if ( ( image -> columns == 0 ) && ( image -> rows == 0 ) ) while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; } if ( ( LocaleCompare ( format , \"32-bit_rle_rgbe\" ) != 0 ) && ( LocaleCompare ( format , \"32-bit_rle_xyze\" ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; ( void ) SetImageColorspace ( image , RGBColorspace ) ; if ( LocaleCompare ( format , \"32-bit_rle_xyze\" ) == 0 ) ( void ) SetImageColorspace ( image , XYZColorspace ) ; image -> compression = ( image -> columns < 8 ) || ( image -> columns > 0x7ffff ) ? NoCompression : RLECompression ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } <S2SV_StartBug> pixels = ( unsigned char * ) AcquireQuantumMemory ( image -> columns , 4 * <S2SV_EndBug> sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { if ( image -> compression != RLECompression ) { count = ReadBlob ( image , 4 * image -> columns * sizeof ( * pixels ) , pixels ) ; if ( count != ( ssize_t ) ( 4 * image -> columns * sizeof ( * pixels ) ) ) break ; } else { count = ReadBlob ( image , 4 * sizeof ( * pixel ) , pixel ) ; if ( count != 4 ) break ; if ( ( size_t ) ( ( ( ( size_t ) pixel [ 2 ] ) << 8 ) | pixel [ 3 ] ) != image -> columns ) { ( void ) memcpy ( pixels , pixel , 4 * sizeof ( * pixel ) ) ; count = ReadBlob ( image , 4 * ( image -> columns - 1 ) * sizeof ( * pixels ) , pixels + 4 ) ; image -> compression = NoCompression ; } else { p = pixels ; for ( i = 0 ; i < 4 ; i ++ ) { end = & pixels [ ( i + 1 ) * image -> columns ] ; while ( p < end ) { count = ReadBlob ( image , 2 * sizeof ( * pixel ) , pixel ) ; if ( count < 1 ) break ; if ( pixel [ 0 ] > 128 ) { count = ( ssize_t ) pixel [ 0 ] - 128 ; if ( ( count == 0 ) || ( count > ( ssize_t ) ( end - p ) ) ) break ; while ( count -- > 0 ) * p ++ = pixel [ 1 ] ; } else { count = ( ssize_t ) pixel [ 0 ] ; if ( ( count == 0 ) || ( count > ( ssize_t ) ( end - p ) ) ) break ; * p ++ = pixel [ 1 ] ; if ( -- count > 0 ) { count = ReadBlob ( image , ( size_t ) count * sizeof ( * p ) , p ) ; if ( count < 1 ) break ; p += count ; } } } } } } q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; i = 0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> compression == RLECompression ) { pixel [ 0 ] = pixels [ x ] ; pixel [ 1 ] = pixels [ x + image -> columns ] ; pixel [ 2 ] = pixels [ x + 2 * image -> columns ] ; pixel [ 3 ] = pixels [ x + 3 * image -> columns ] ; } else { pixel [ 0 ] = pixels [ i ++ ] ; pixel [ 1 ] = pixels [ i ++ ] ; pixel [ 2 ] = pixels [ i ++ ] ; pixel [ 3 ] = pixels [ i ++ ] ; } SetPixelRed ( q , 0 ) ; SetPixelGreen ( q , 0 ) ; SetPixelBlue ( q , 0 ) ; if ( pixel [ 3 ] != 0 ) { gamma = pow ( 2.0 , pixel [ 3 ] - ( 128.0 + 8.0 ) ) ; SetPixelRed ( q , ClampToQuantum ( QuantumRange * gamma * pixel [ 0 ] ) ) ; SetPixelGreen ( q , ClampToQuantum ( QuantumRange * gamma * pixel [ 1 ] ) ) ; SetPixelBlue ( q , ClampToQuantum ( QuantumRange * gamma * pixel [ 2 ] ) ) ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1828\n\n```\nCWE-20 static int sctp_getsockopt_assoc_stats ( struct sock * sk , int len , char __user * optval , int __user * optlen ) { struct sctp_assoc_stats sas ; struct sctp_association * asoc = NULL ; if ( len < sizeof ( sctp_assoc_t ) ) return - EINVAL ; <S2SV_StartBug> if ( copy_from_user ( & sas , optval , len ) ) <S2SV_EndBug> return - EFAULT ; asoc = sctp_id2assoc ( sk , sas . sas_assoc_id ) ; if ( ! asoc ) return - EINVAL ; sas . sas_rtxchunks = asoc -> stats . rtxchunks ; sas . sas_gapcnt = asoc -> stats . gapcnt ; sas . sas_outofseqtsns = asoc -> stats . outofseqtsns ; sas . sas_osacks = asoc -> stats . osacks ; sas . sas_isacks = asoc -> stats . isacks ; sas . sas_octrlchunks = asoc -> stats . octrlchunks ; sas . sas_ictrlchunks = asoc -> stats . ictrlchunks ; sas . sas_oodchunks = asoc -> stats . oodchunks ; sas . sas_iodchunks = asoc -> stats . iodchunks ; sas . sas_ouodchunks = asoc -> stats . ouodchunks ; sas . sas_iuodchunks = asoc -> stats . iuodchunks ; sas . sas_idupchunks = asoc -> stats . idupchunks ; sas . sas_opackets = asoc -> stats . opackets ; sas . sas_ipackets = asoc -> stats . ipackets ; sas . sas_maxrto = asoc -> stats . max_obs_rto ; memcpy ( & sas . sas_obs_rto_ipaddr , & asoc -> stats . obs_rto_ipaddr , sizeof ( struct sockaddr_storage ) ) ; asoc -> stats . max_obs_rto = asoc -> rto_min ; <S2SV_StartBug> len = min_t ( size_t , len , sizeof ( sas ) ) ; <S2SV_EndBug> if ( put_user ( len , optlen ) ) return - EFAULT ; SCTP_DEBUG_PRINTK ( \"sctp_getsockopt_assoc_stat(%d):<S2SV_blank>%d\\\\n\" , len , sas . sas_assoc_id ) ; if ( copy_to_user ( optval , & sas , len ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EINVAL ; len = min_t ( size_t , len , sizeof ( sas ) ) ; <S2SV_ModStart> -> rto_min ; <S2SV_ModEnd> if ( put_user\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7010\n\n```\nCWE-189 static void add_bytes_c ( uint8_t * dst , uint8_t * src , int w ) { long i ; <S2SV_StartBug> for ( i = 0 ; i <= w - sizeof ( long ) ; i += sizeof ( long ) ) { <S2SV_EndBug> long a = * ( long * ) ( src + i ) ; long b = * ( long * ) ( dst + i ) ; * ( long * ) ( dst + i ) = ( ( a & pb_7f ) + ( b & pb_7f ) ) ^ ( ( a ^ b ) & pb_80 ) ; } for ( ; i < w ; i ++ ) dst [ i + 0 ] += src [ i + 0 ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <= w - ( int )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0807\n\n```\nCWE-119 char * suhosin_encrypt_single_cookie ( char * name , int name_len , char * value , int value_len , char * key TSRMLS_DC ) { <S2SV_StartBug> char buffer [ 4096 ] ; <S2SV_EndBug> char buffer2 [ 4096 ] ; char * buf = buffer , * buf2 = buffer2 , * d , * d_url ; int l ; <S2SV_StartBug> if ( name_len > sizeof ( buffer ) - 2 ) { <S2SV_EndBug> buf = estrndup ( name , name_len ) ; <S2SV_StartBug> } else { <S2SV_EndBug> memcpy ( buf , name , name_len ) ; buf [ name_len ] = 0 ; } name_len = php_url_decode ( buf , name_len ) ; normalize_varname ( buf ) ; name_len = strlen ( buf ) ; if ( SUHOSIN_G ( cookie_plainlist ) ) { if ( zend_hash_exists ( SUHOSIN_G ( cookie_plainlist ) , buf , name_len + 1 ) ) { encrypt_return_plain : <S2SV_StartBug> if ( buf != buffer ) { <S2SV_EndBug> efree ( buf ) ; } return estrndup ( value , value_len ) ; } } else if ( SUHOSIN_G ( cookie_cryptlist ) ) { if ( ! zend_hash_exists ( SUHOSIN_G ( cookie_cryptlist ) , buf , name_len + 1 ) ) { goto encrypt_return_plain ; } } <S2SV_StartBug> if ( strlen ( value ) <= sizeof ( buffer2 ) - 2 ) { <S2SV_EndBug> memcpy ( buf2 , value , value_len ) ; buf2 [ value_len ] = 0 ; } else { buf2 = estrndup ( value , value_len ) ; } value_len = php_url_decode ( buf2 , value_len ) ; d = suhosin_encrypt_string ( buf2 , value_len , buf , name_len , key TSRMLS_CC ) ; d_url = php_url_encode ( d , strlen ( d ) , & l ) ; efree ( d ) ; <S2SV_StartBug> if ( buf != buffer ) { <S2SV_EndBug> efree ( buf ) ; } if ( buf2 != buffer2 ) { efree ( buf2 ) ; } return d_url ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { char * buf , * buf2 <S2SV_ModEnd> , * d <S2SV_ModStart> int l ; <S2SV_ModEnd> buf = estrndup <S2SV_ModStart> name_len ) ; <S2SV_ModEnd> name_len = php_url_decode <S2SV_ModStart> { encrypt_return_plain : efree ( buf ) ; <S2SV_ModEnd> return estrndup ( <S2SV_ModStart> ; } } buf2 = estrndup ( value , value_len ) ; <S2SV_ModEnd> value_len = php_url_decode <S2SV_ModStart> d ) ; efree ( buf ) ; efree ( buf2 ) ; <S2SV_ModEnd> return d_url ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9588\n\n```\nCWE-388 static void vmx_complete_atomic_exit ( struct vcpu_vmx * vmx ) { u32 exit_intr_info ; if ( ! ( vmx -> exit_reason == EXIT_REASON_MCE_DURING_VMENTRY || vmx -> exit_reason == EXIT_REASON_EXCEPTION_NMI ) ) return ; vmx -> exit_intr_info = vmcs_read32 ( VM_EXIT_INTR_INFO ) ; exit_intr_info = vmx -> exit_intr_info ; if ( is_machine_check ( exit_intr_info ) ) kvm_machine_check ( ) ; <S2SV_StartBug> if ( ( exit_intr_info & INTR_INFO_INTR_TYPE_MASK ) == INTR_TYPE_NMI_INTR && <S2SV_EndBug> ( exit_intr_info & INTR_INFO_VALID_MASK ) ) { kvm_before_handle_nmi ( & vmx -> vcpu ) ; asm ( \"int<S2SV_blank>$2\" ) ; kvm_after_handle_nmi ( & vmx -> vcpu ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( is_nmi ( exit_intr_info <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static REFERENCE_MODE read_frame_reference_mode ( const VP9_COMMON * cm , <S2SV_StartBug> vp9_reader * r ) { <S2SV_EndBug> if ( is_compound_reference_allowed ( cm ) ) { <S2SV_StartBug> return vp9_read_bit ( r ) ? ( vp9_read_bit ( r ) ? REFERENCE_MODE_SELECT <S2SV_EndBug> : COMPOUND_REFERENCE ) : SINGLE_REFERENCE ; } else { return SINGLE_REFERENCE ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cm , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> ) { return vpx_read_bit <S2SV_ModEnd> ( r ) <S2SV_ModStart> ) ? ( vpx_read_bit <S2SV_ModEnd> ( r )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static const interp_kernel * choose_interp_filter ( int inlength , int outlength ) { int outlength16 = outlength * 16 ; if ( outlength16 >= inlength * 16 ) <S2SV_StartBug> return vp9_filteredinterp_filters1000 ; <S2SV_EndBug> else if ( outlength16 >= inlength * 13 ) <S2SV_StartBug> return vp9_filteredinterp_filters875 ; <S2SV_EndBug> else if ( outlength16 >= inlength * 11 ) <S2SV_StartBug> return vp9_filteredinterp_filters750 ; <S2SV_EndBug> else if ( outlength16 >= inlength * 9 ) <S2SV_StartBug> return vp9_filteredinterp_filters625 ; <S2SV_EndBug> else <S2SV_StartBug> return vp9_filteredinterp_filters500 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 16 ) return filteredinterp_filters1000 <S2SV_ModEnd> ; else if <S2SV_ModStart> 13 ) return filteredinterp_filters875 <S2SV_ModEnd> ; else if <S2SV_ModStart> 11 ) return filteredinterp_filters750 <S2SV_ModEnd> ; else if <S2SV_ModStart> 9 ) return filteredinterp_filters625 <S2SV_ModEnd> ; else return <S2SV_ModStart> ; else return filteredinterp_filters500 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 static int rose_parse_national ( unsigned char * p , struct rose_facilities_struct * facilities , int len ) { unsigned char * pt ; unsigned char l , lg , n = 0 ; int fac_national_digis_received = 0 ; do { switch ( * p & 0xC0 ) { case 0x00 : <S2SV_StartBug> p += 2 ; <S2SV_EndBug> n += 2 ; len -= 2 ; break ; case 0x40 : <S2SV_StartBug> if ( * p == FAC_NATIONAL_RAND ) <S2SV_EndBug> facilities -> rand = ( ( p [ 1 ] << 8 ) & 0xFF00 ) + ( ( p [ 2 ] << 0 ) & 0x00FF ) ; p += 3 ; n += 3 ; len -= 3 ; break ; case 0x80 : <S2SV_StartBug> p += 4 ; <S2SV_EndBug> n += 4 ; len -= 4 ; break ; case 0xC0 : <S2SV_StartBug> l = p [ 1 ] ; <S2SV_EndBug> if ( * p == FAC_NATIONAL_DEST_DIGI ) { if ( ! fac_national_digis_received ) { <S2SV_StartBug> memcpy ( & facilities -> source_digis [ 0 ] , p + 2 , AX25_ADDR_LEN ) ; <S2SV_EndBug> facilities -> source_ndigis = 1 ; } } else if ( * p == FAC_NATIONAL_SRC_DIGI ) { if ( ! fac_national_digis_received ) { <S2SV_StartBug> memcpy ( & facilities -> dest_digis [ 0 ] , p + 2 , AX25_ADDR_LEN ) ; <S2SV_EndBug> facilities -> dest_ndigis = 1 ; } } else if ( * p == FAC_NATIONAL_FAIL_CALL ) { <S2SV_StartBug> memcpy ( & facilities -> fail_call , p + 2 , AX25_ADDR_LEN ) ; <S2SV_EndBug> } else if ( * p == FAC_NATIONAL_FAIL_ADD ) { <S2SV_StartBug> memcpy ( & facilities -> fail_addr , p + 3 , ROSE_ADDR_LEN ) ; <S2SV_EndBug> } <S2SV_StartBug> else if ( * p == FAC_NATIONAL_DIGIS ) { <S2SV_EndBug> fac_national_digis_received = 1 ; facilities -> source_ndigis = 0 ; facilities -> dest_ndigis = 0 ; for ( pt = p + 2 , lg = 0 ; lg < l ; pt += AX25_ADDR_LEN , lg += AX25_ADDR_LEN ) { if ( pt [ 6 ] & AX25_HBIT ) { if ( facilities -> dest_ndigis >= ROSE_MAX_DIGIS ) return - 1 ; memcpy ( & facilities -> dest_digis [ facilities -> dest_ndigis ++ ] , pt , AX25_ADDR_LEN ) ; } else { if ( facilities -> source_ndigis >= ROSE_MAX_DIGIS ) return - 1 ; memcpy ( & facilities -> source_digis [ facilities -> source_ndigis ++ ] , pt , AX25_ADDR_LEN ) ; } } } p += l + 2 ; n += l + 2 ; len -= l + 2 ; break ; } } while ( * p != 0x00 && len > 0 ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 0x00 : if ( len < 2 ) return - 1 ; <S2SV_ModStart> : if ( len < 3 ) return - 1 ; if ( <S2SV_ModStart> case 0x80 : if ( len < 4 ) return - 1 ; <S2SV_ModStart> case 0xC0 : if ( len < 2 ) return - 1 ; l = p [ 1 ] ; if ( len < 2 + l ) return - 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> fac_national_digis_received ) { if ( l < AX25_ADDR_LEN ) return - 1 ; <S2SV_ModStart> fac_national_digis_received ) { if ( l < AX25_ADDR_LEN ) return - 1 ; <S2SV_ModStart> FAC_NATIONAL_FAIL_CALL ) { if ( l < AX25_ADDR_LEN ) return - 1 ; <S2SV_ModStart> FAC_NATIONAL_FAIL_ADD ) { if ( l < 1 + ROSE_ADDR_LEN ) return - 1 ; <S2SV_ModStart> FAC_NATIONAL_DIGIS ) { if ( l % AX25_ADDR_LEN ) return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void update_coef_probs_common ( vp9_writer * const bc , VP9_COMP * cpi , <S2SV_EndBug> TX_SIZE tx_size , <S2SV_StartBug> vp9_coeff_stats * frame_branch_ct ) { <S2SV_EndBug> vp9_coeff_probs_model * new_frame_coef_probs = cpi -> frame_coef_probs [ tx_size ] ; vp9_coeff_probs_model * old_frame_coef_probs = <S2SV_StartBug> cpi -> common . fc . coef_probs [ tx_size ] ; <S2SV_EndBug> const vp9_prob upd = DIFF_UPDATE_PROB ; const int entropy_nodes_update = UNCONSTRAINED_NODES ; int i , j , k , l , t ; switch ( cpi -> sf . use_fast_coef_updates ) { case TWO_LOOP : { int savings = 0 ; int update [ 2 ] = { 0 , 0 } ; for ( i = 0 ; i < PLANE_TYPES ; ++ i ) { for ( j = 0 ; j < REF_TYPES ; ++ j ) { for ( k = 0 ; k < COEF_BANDS ; ++ k ) { for ( l = 0 ; l < BAND_COEFF_CONTEXTS ( k ) ; ++ l ) { for ( t = 0 ; t < entropy_nodes_update ; ++ t ) { <S2SV_StartBug> vp9_prob newp = new_frame_coef_probs [ i ] [ j ] [ k ] [ l ] [ t ] ; <S2SV_EndBug> <S2SV_StartBug> const vp9_prob oldp = old_frame_coef_probs [ i ] [ j ] [ k ] [ l ] [ t ] ; <S2SV_EndBug> int s ; int u = 0 ; if ( t == PIVOT_NODE ) s = vp9_prob_diff_update_savings_search_model ( frame_branch_ct [ i ] [ j ] [ k ] [ l ] [ 0 ] , <S2SV_StartBug> old_frame_coef_probs [ i ] [ j ] [ k ] [ l ] , & newp , upd ) ; <S2SV_EndBug> else s = vp9_prob_diff_update_savings_search ( frame_branch_ct [ i ] [ j ] [ k ] [ l ] [ t ] , oldp , & newp , upd ) ; if ( s > 0 && newp != oldp ) u = 1 ; if ( u ) savings += s - ( int ) ( vp9_cost_zero ( upd ) ) ; else savings -= ( int ) ( vp9_cost_zero ( upd ) ) ; update [ u ] ++ ; } } } } } if ( update [ 1 ] == 0 || savings < 0 ) { <S2SV_StartBug> vp9_write_bit ( bc , 0 ) ; <S2SV_EndBug> return ; } <S2SV_StartBug> vp9_write_bit ( bc , 1 ) ; <S2SV_EndBug> for ( i = 0 ; i < PLANE_TYPES ; ++ i ) { for ( j = 0 ; j < REF_TYPES ; ++ j ) { for ( k = 0 ; k < COEF_BANDS ; ++ k ) { for ( l = 0 ; l < BAND_COEFF_CONTEXTS ( k ) ; ++ l ) { for ( t = 0 ; t < entropy_nodes_update ; ++ t ) { <S2SV_StartBug> vp9_prob newp = new_frame_coef_probs [ i ] [ j ] [ k ] [ l ] [ t ] ; <S2SV_EndBug> vp9_prob * oldp = old_frame_coef_probs [ i ] [ j ] [ k ] [ l ] + t ; <S2SV_StartBug> const vp9_prob upd = DIFF_UPDATE_PROB ; <S2SV_EndBug> int s ; int u = 0 ; if ( t == PIVOT_NODE ) s = vp9_prob_diff_update_savings_search_model ( frame_branch_ct [ i ] [ j ] [ k ] [ l ] [ 0 ] , <S2SV_StartBug> old_frame_coef_probs [ i ] [ j ] [ k ] [ l ] , & newp , upd ) ; <S2SV_EndBug> else s = vp9_prob_diff_update_savings_search ( frame_branch_ct [ i ] [ j ] [ k ] [ l ] [ t ] , * oldp , & newp , upd ) ; if ( s > 0 && newp != * oldp ) u = 1 ; <S2SV_StartBug> vp9_write ( bc , u , upd ) ; <S2SV_EndBug> if ( u ) { vp9_write_prob_diff_update ( bc , newp , * oldp ) ; * oldp = newp ; } } } } } } return ; } <S2SV_StartBug> case ONE_LOOP : <S2SV_EndBug> case ONE_LOOP_REDUCED : { <S2SV_StartBug> const int prev_coef_contexts_to_update = <S2SV_EndBug> cpi -> sf . use_fast_coef_updates == ONE_LOOP_REDUCED ? COEFF_CONTEXTS >> 1 : COEFF_CONTEXTS ; const int coef_band_to_update = cpi -> sf . use_fast_coef_updates == ONE_LOOP_REDUCED ? COEF_BANDS >> 1 : COEF_BANDS ; int updates = 0 ; int noupdates_before_first = 0 ; for ( i = 0 ; i < PLANE_TYPES ; ++ i ) { for ( j = 0 ; j < REF_TYPES ; ++ j ) { for ( k = 0 ; k < COEF_BANDS ; ++ k ) { for ( l = 0 ; l < BAND_COEFF_CONTEXTS ( k ) ; ++ l ) { for ( t = 0 ; t < entropy_nodes_update ; ++ t ) { <S2SV_StartBug> vp9_prob newp = new_frame_coef_probs [ i ] [ j ] [ k ] [ l ] [ t ] ; <S2SV_EndBug> vp9_prob * oldp = old_frame_coef_probs [ i ] [ j ] [ k ] [ l ] + t ; int s ; int u = 0 ; <S2SV_StartBug> if ( l >= prev_coef_contexts_to_update || <S2SV_EndBug> k >= coef_band_to_update ) { u = 0 ; } else { <S2SV_StartBug> if ( t == PIVOT_NODE ) <S2SV_EndBug> s = vp9_prob_diff_update_savings_search_model ( frame_branch_ct [ i ] [ j ] [ k ] [ l ] [ 0 ] , <S2SV_StartBug> old_frame_coef_probs [ i ] [ j ] [ k ] [ l ] , & newp , upd ) ; <S2SV_EndBug> else s = vp9_prob_diff_update_savings_search ( frame_branch_ct [ i ] [ j ] [ k ] [ l ] [ t ] , * oldp , & newp , upd ) ; <S2SV_StartBug> if ( s > 0 && newp != * oldp ) <S2SV_EndBug> u = 1 ; <S2SV_StartBug> } <S2SV_EndBug> updates += u ; if ( u == 0 && updates == 0 ) { noupdates_before_first ++ ; continue ; } if ( u == 1 && updates == 1 ) { int v ; <S2SV_StartBug> vp9_write_bit ( bc , 1 ) ; <S2SV_EndBug> for ( v = 0 ; v < noupdates_before_first ; ++ v ) <S2SV_StartBug> vp9_write ( bc , 0 , upd ) ; <S2SV_EndBug> } <S2SV_StartBug> vp9_write ( bc , u , upd ) ; <S2SV_EndBug> if ( u ) { vp9_write_prob_diff_update ( bc , newp , * oldp ) ; * oldp = newp ; } } } } } } if ( updates == 0 ) { <S2SV_StartBug> vp9_write_bit ( bc , 0 ) ; <S2SV_EndBug> } return ; } default : assert ( 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void update_coef_probs_common ( vpx_writer <S2SV_ModEnd> * const bc <S2SV_ModStart> vp9_coeff_stats * frame_branch_ct , vp9_coeff_probs_model * new_coef_probs ) { vp9_coeff_probs_model * old_coef_probs = <S2SV_ModEnd> cpi -> common <S2SV_ModStart> common . fc -> coef_probs [ tx_size ] ; const vpx_prob upd = DIFF_UPDATE_PROB ; const int entropy_nodes_update = UNCONSTRAINED_NODES ; int i , j , k , l , t ; int stepsize = cpi -> sf . coeff_prob_appx_step <S2SV_ModEnd> ; switch ( <S2SV_ModStart> t ) { vpx_prob newp = new_coef_probs <S2SV_ModEnd> [ i ] <S2SV_ModStart> ] ; const vpx_prob oldp = old_coef_probs <S2SV_ModEnd> [ i ] <S2SV_ModStart> 0 ] , old_coef_probs <S2SV_ModEnd> [ i ] <S2SV_ModStart> newp , upd , stepsize <S2SV_ModStart> 0 ) { vpx_write_bit <S2SV_ModEnd> ( bc , <S2SV_ModStart> return ; } vpx_write_bit <S2SV_ModEnd> ( bc , <S2SV_ModStart> t ) { vpx_prob newp = new_coef_probs [ i ] [ j ] [ k ] [ l ] [ t ] ; vpx_prob * oldp = old_coef_probs <S2SV_ModEnd> [ i ] <S2SV_ModStart> t ; const vpx_prob <S2SV_ModEnd> upd = DIFF_UPDATE_PROB <S2SV_ModStart> 0 ] , old_coef_probs <S2SV_ModEnd> [ i ] <S2SV_ModStart> newp , upd , stepsize <S2SV_ModStart> = 1 ; vpx_write <S2SV_ModEnd> ( bc , <S2SV_ModStart> return ; } <S2SV_ModEnd> case ONE_LOOP_REDUCED : <S2SV_ModStart> ONE_LOOP_REDUCED : { int updates = 0 ; int noupdates_before_first = 0 ; for ( i = 0 ; i < PLANE_TYPES ; ++ i ) { for ( j = 0 ; j < REF_TYPES ; ++ j ) { for ( k = 0 ; k < COEF_BANDS <S2SV_ModEnd> ; ++ k <S2SV_ModStart> t ) { vpx_prob newp = new_coef_probs [ i ] [ j ] [ k ] [ l ] [ t ] ; vpx_prob * oldp = old_coef_probs <S2SV_ModEnd> [ i ] <S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( t <S2SV_ModStart> == PIVOT_NODE ) { <S2SV_ModStart> 0 ] , old_coef_probs <S2SV_ModEnd> [ i ] <S2SV_ModStart> newp , upd , stepsize ) ; } else { <S2SV_ModEnd> s = vp9_prob_diff_update_savings_search <S2SV_ModStart> upd ) ; } <S2SV_ModStart> = 1 ; <S2SV_ModEnd> updates += u <S2SV_ModStart> int v ; vpx_write_bit <S2SV_ModEnd> ( bc , <S2SV_ModStart> ++ v ) vpx_write <S2SV_ModEnd> ( bc , <S2SV_ModStart> ) ; } vpx_write <S2SV_ModEnd> ( bc , <S2SV_ModStart> 0 ) { vpx_write_bit <S2SV_ModEnd> ( bc ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2697\n\n```\nCWE-125 static krb5_error_code build_principal_va ( krb5_context context , krb5_principal princ , unsigned int rlen , const char * realm , va_list ap ) { krb5_error_code retval = 0 ; char * r = NULL ; krb5_data * data = NULL ; krb5_int32 count = 0 ; krb5_int32 size = 2 ; char * component = NULL ; data = malloc ( size * sizeof ( krb5_data ) ) ; if ( ! data ) { retval = ENOMEM ; } <S2SV_StartBug> if ( ! retval ) { <S2SV_EndBug> r = strdup ( realm ) ; if ( ! r ) { retval = ENOMEM ; } } while ( ! retval && ( component = va_arg ( ap , char * ) ) ) { if ( count == size ) { krb5_data * new_data = NULL ; size *= 2 ; new_data = realloc ( data , size * sizeof ( krb5_data ) ) ; if ( new_data ) { data = new_data ; } else { retval = ENOMEM ; } } if ( ! retval ) { data [ count ] . length = strlen ( component ) ; data [ count ] . data = strdup ( component ) ; if ( ! data [ count ] . data ) { retval = ENOMEM ; } count ++ ; } } if ( ! retval ) { princ -> type = KRB5_NT_UNKNOWN ; princ -> magic = KV5M_PRINCIPAL ; princ -> realm = make_data ( r , rlen ) ; princ -> data = data ; princ -> length = count ; r = NULL ; data = NULL ; } if ( data ) { while ( -- count >= 0 ) { free ( data [ count ] . data ) ; } free ( data ) ; } free ( r ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! retval ) r = k5memdup0 ( realm , rlen , & retval ) ; <S2SV_ModEnd> while ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9141\n\n```\nCWE-20 static Image * ReadDDSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status , cubemap = MagickFalse , volume = MagickFalse ; CompressionType compression ; DDSInfo dds_info ; DDSDecoder * decoder ; PixelTrait alpha_trait ; size_t n , num_images ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } <S2SV_StartBug> if ( ReadDDSInfo ( image , & dds_info ) != MagickTrue ) { <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP ) cubemap = MagickTrue ; if ( dds_info . ddscaps2 & DDSCAPS2_VOLUME && dds_info . depth > 0 ) volume = MagickTrue ; ( void ) SeekBlob ( image , 128 , SEEK_SET ) ; if ( dds_info . pixelformat . flags & DDPF_RGB ) { compression = NoCompression ; if ( dds_info . pixelformat . flags & DDPF_ALPHAPIXELS ) { alpha_trait = BlendPixelTrait ; decoder = ReadUncompressedRGBA ; } else { alpha_trait = UndefinedPixelTrait ; decoder = ReadUncompressedRGB ; } } else if ( dds_info . pixelformat . flags & DDPF_LUMINANCE ) { compression = NoCompression ; if ( dds_info . pixelformat . flags & DDPF_ALPHAPIXELS ) { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } else { alpha_trait = UndefinedPixelTrait ; decoder = ReadUncompressedRGB ; } } else if ( dds_info . pixelformat . flags & DDPF_FOURCC ) { switch ( dds_info . pixelformat . fourcc ) { case FOURCC_DXT1 : { alpha_trait = UndefinedPixelTrait ; compression = DXT1Compression ; decoder = ReadDXT1 ; break ; } case FOURCC_DXT3 : { alpha_trait = BlendPixelTrait ; compression = DXT3Compression ; decoder = ReadDXT3 ; break ; } case FOURCC_DXT5 : { alpha_trait = BlendPixelTrait ; compression = DXT5Compression ; decoder = ReadDXT5 ; break ; } default : { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } } } else { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } num_images = 1 ; if ( cubemap ) { num_images = 0 ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEX ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEX ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEY ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEY ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEZ ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEZ ) num_images ++ ; } if ( volume ) num_images = dds_info . depth ; <S2SV_StartBug> for ( n = 0 ; n < num_images ; n ++ ) <S2SV_EndBug> { if ( n != 0 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) return ( DestroyImageList ( image ) ) ; image = SyncNextImageInList ( image ) ; } image -> alpha_trait = alpha_trait ; image -> compression = compression ; image -> columns = dds_info . width ; image -> rows = dds_info . height ; image -> storage_class = DirectClass ; image -> endian = LSBEndian ; image -> depth = 8 ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( decoder ) ( image , & dds_info , exception ) != MagickTrue ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != MagickTrue ) <S2SV_ModEnd> ThrowReaderException ( CorruptImageError <S2SV_ModStart> \"ImproperImageHeader\" ) ; <S2SV_ModEnd> if ( dds_info <S2SV_ModStart> . depth ; if ( num_images < 1 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_fht16x16_sse2 ( const int16_t * input , int16_t * output , <S2SV_EndBug> int stride , int tx_type ) { __m128i in0 [ 16 ] , in1 [ 16 ] ; switch ( tx_type ) { case DCT_DCT : <S2SV_StartBug> vp9_fdct16x16_sse2 ( input , output , stride ) ; <S2SV_EndBug> break ; case ADST_DCT : load_buffer_16x16 ( input , in0 , in1 , stride ) ; fadst16_sse2 ( in0 , in1 ) ; right_shift_16x16 ( in0 , in1 ) ; fdct16_sse2 ( in0 , in1 ) ; write_buffer_16x16 ( output , in0 , in1 , 16 ) ; break ; case DCT_ADST : load_buffer_16x16 ( input , in0 , in1 , stride ) ; fdct16_sse2 ( in0 , in1 ) ; right_shift_16x16 ( in0 , in1 ) ; fadst16_sse2 ( in0 , in1 ) ; write_buffer_16x16 ( output , in0 , in1 , 16 ) ; break ; case ADST_ADST : load_buffer_16x16 ( input , in0 , in1 , stride ) ; fadst16_sse2 ( in0 , in1 ) ; right_shift_16x16 ( in0 , in1 ) ; fadst16_sse2 ( in0 , in1 ) ; write_buffer_16x16 ( output , in0 , in1 , 16 ) ; break ; default : assert ( 0 ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * input , tran_low_t <S2SV_ModEnd> * output , <S2SV_ModStart> case DCT_DCT : vpx_fdct16x16_sse2 <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12460\n\n```\nCWE-476 av_cold void ff_idctdsp_init ( IDCTDSPContext * c , AVCodecContext * avctx ) { const unsigned high_bit_depth = avctx -> bits_per_raw_sample > 8 ; if ( avctx -> lowres == 1 ) { c -> idct_put = ff_jref_idct4_put ; c -> idct_add = ff_jref_idct4_add ; c -> idct = ff_j_rev_dct4 ; c -> perm_type = FF_IDCT_PERM_NONE ; } else if ( avctx -> lowres == 2 ) { c -> idct_put = ff_jref_idct2_put ; c -> idct_add = ff_jref_idct2_add ; c -> idct = ff_j_rev_dct2 ; c -> perm_type = FF_IDCT_PERM_NONE ; } else if ( avctx -> lowres == 3 ) { c -> idct_put = ff_jref_idct1_put ; c -> idct_add = ff_jref_idct1_add ; c -> idct = ff_j_rev_dct1 ; c -> perm_type = FF_IDCT_PERM_NONE ; } else { if ( avctx -> bits_per_raw_sample == 10 || avctx -> bits_per_raw_sample == 9 ) { <S2SV_StartBug> if ( avctx -> codec_id == AV_CODEC_ID_MPEG4 && avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) <S2SV_EndBug> c -> idct_put = ff_simple_idct_put_int32_10bit ; else { c -> idct_put = ff_simple_idct_put_int16_10bit ; c -> idct_add = ff_simple_idct_add_int16_10bit ; c -> idct = ff_simple_idct_int16_10bit ; } c -> perm_type = FF_IDCT_PERM_NONE ; } else if ( avctx -> bits_per_raw_sample == 12 ) { c -> idct_put = ff_simple_idct_put_int16_12bit ; c -> idct_add = ff_simple_idct_add_int16_12bit ; c -> idct = ff_simple_idct_int16_12bit ; c -> perm_type = FF_IDCT_PERM_NONE ; } else { if ( avctx -> idct_algo == FF_IDCT_INT ) { c -> idct_put = ff_jref_idct_put ; c -> idct_add = ff_jref_idct_add ; c -> idct = ff_j_rev_dct ; c -> perm_type = FF_IDCT_PERM_LIBMPEG2 ; # if CONFIG_FAANIDCT } else if ( avctx -> idct_algo == FF_IDCT_FAAN ) { c -> idct_put = ff_faanidct_put ; c -> idct_add = ff_faanidct_add ; c -> idct = ff_faanidct ; c -> perm_type = FF_IDCT_PERM_NONE ; # endif } else { c -> idct_put = ff_simple_idct_put_int16_8bit ; c -> idct_add = ff_simple_idct_add_int16_8bit ; c -> idct = ff_simple_idct_int16_8bit ; c -> perm_type = FF_IDCT_PERM_NONE ; } } } c -> put_pixels_clamped = ff_put_pixels_clamped_c ; c -> put_signed_pixels_clamped = put_signed_pixels_clamped_c ; c -> add_pixels_clamped = ff_add_pixels_clamped_c ; if ( CONFIG_MPEG4_DECODER && avctx -> idct_algo == FF_IDCT_XVID ) ff_xvid_idct_init ( c , avctx ) ; if ( ARCH_AARCH64 ) ff_idctdsp_init_aarch64 ( c , avctx , high_bit_depth ) ; if ( ARCH_ALPHA ) ff_idctdsp_init_alpha ( c , avctx , high_bit_depth ) ; if ( ARCH_ARM ) ff_idctdsp_init_arm ( c , avctx , high_bit_depth ) ; if ( ARCH_PPC ) ff_idctdsp_init_ppc ( c , avctx , high_bit_depth ) ; if ( ARCH_X86 ) ff_idctdsp_init_x86 ( c , avctx , high_bit_depth ) ; if ( ARCH_MIPS ) ff_idctdsp_init_mips ( c , avctx , high_bit_depth ) ; ff_init_scantable_permutation ( c -> idct_permutation , c -> perm_type ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( c -> mpeg4_studio_profile <S2SV_ModEnd> ) c ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void encode_block ( int plane , int block , BLOCK_SIZE plane_bsize , TX_SIZE tx_size , void * arg ) { struct encode_b_args * const args = arg ; MACROBLOCK * const x = args -> x ; MACROBLOCKD * const xd = & x -> e_mbd ; struct optimize_ctx * const ctx = args -> ctx ; struct macroblock_plane * const p = & x -> plane [ plane ] ; struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; <S2SV_StartBug> int16_t * const dqcoeff = BLOCK_OFFSET ( pd -> dqcoeff , block ) ; <S2SV_EndBug> int i , j ; uint8_t * dst ; ENTROPY_CONTEXT * a , * l ; txfrm_block_to_raster_xy ( plane_bsize , tx_size , block , & i , & j ) ; dst = & pd -> dst . buf [ 4 * j * pd -> dst . stride + 4 * i ] ; a = & ctx -> ta [ plane ] [ i ] ; l = & ctx -> tl [ plane ] [ j ] ; if ( x -> zcoeff_blk [ tx_size ] [ block ] && plane == 0 ) { p -> eobs [ block ] = 0 ; * a = * l = 0 ; return ; } <S2SV_StartBug> if ( ! x -> skip_recode ) <S2SV_EndBug> <S2SV_StartBug> vp9_xform_quant ( x , plane , block , plane_bsize , tx_size ) ; <S2SV_EndBug> if ( x -> optimize && ( ! x -> skip_recode || ! x -> skip_optimize ) ) { <S2SV_StartBug> optimize_b ( plane , block , plane_bsize , tx_size , x , a , l ) ; <S2SV_EndBug> } else { * a = * l = p -> eobs [ block ] > 0 ; } if ( p -> eobs [ block ] ) * ( args -> skip ) = 0 ; if ( x -> skip_encode || p -> eobs [ block ] == 0 ) return ; <S2SV_StartBug> switch ( tx_size ) { <S2SV_EndBug> case TX_32X32 : <S2SV_StartBug> vp9_idct32x32_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; <S2SV_EndBug> break ; case TX_16X16 : <S2SV_StartBug> vp9_idct16x16_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; <S2SV_EndBug> break ; case TX_8X8 : <S2SV_StartBug> vp9_idct8x8_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; <S2SV_EndBug> break ; case TX_4X4 : <S2SV_StartBug> xd -> itxm_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; <S2SV_EndBug> break ; default : assert ( 0 && \"Invalid<S2SV_blank>transform<S2SV_blank>size\" ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> plane ] ; tran_low_t <S2SV_ModEnd> * const dqcoeff <S2SV_ModStart> -> skip_recode ) { if ( x -> quant_fp ) { if ( x -> skip_txfm [ 0 ] == SKIP_TXFM_AC_DC && plane == 0 ) { p -> eobs [ block ] = 0 ; * a = * l = 0 ; return ; } else { vp9_xform_quant_fp ( x , plane , block , plane_bsize , tx_size ) ; } } else { if ( max_txsize_lookup [ plane_bsize ] == tx_size ) { int txfm_blk_index = ( plane << 2 ) + ( block >> ( tx_size << 1 ) ) ; if ( x -> skip_txfm [ txfm_blk_index ] == SKIP_TXFM_NONE ) { <S2SV_ModStart> tx_size ) ; } else if ( x -> skip_txfm [ txfm_blk_index ] == SKIP_TXFM_AC_ONLY ) { vp9_xform_quant_dc ( x , plane , block , plane_bsize , tx_size ) ; } else { p -> eobs [ block ] = 0 ; * a = * l = 0 ; return ; } } else { vp9_xform_quant ( x , plane , block , plane_bsize , tx_size ) ; } } } <S2SV_ModStart> ) ) { const int ctx = combine_entropy_contexts ( * a , * l ) ; * a = * l = optimize_b ( x , plane , block , tx_size , ctx ) > 0 <S2SV_ModEnd> ; } else <S2SV_ModStart> ) return ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { <S2SV_ModStart> case TX_32X32 : vp9_highbd_idct32x32_add <S2SV_ModEnd> ( dqcoeff , <S2SV_ModStart> . stride , p -> eobs [ block ] , xd -> bd <S2SV_ModEnd> ) ; break <S2SV_ModStart> case TX_16X16 : vp9_highbd_idct16x16_add <S2SV_ModEnd> ( dqcoeff , <S2SV_ModStart> . stride , p -> eobs [ block ] , xd -> bd <S2SV_ModEnd> ) ; break <S2SV_ModStart> case TX_8X8 : vp9_highbd_idct8x8_add <S2SV_ModEnd> ( dqcoeff , <S2SV_ModStart> . stride , p -> eobs [ block ] , xd -> bd <S2SV_ModEnd> ) ; break <S2SV_ModStart> case TX_4X4 : x -> highbd_itxm_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] , xd -> bd <S2SV_ModEnd> ) ; break <S2SV_ModStart> ) ; } return ; } # endif switch ( tx_size ) { case TX_32X32 : vp9_idct32x32_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; break ; case TX_16X16 : vp9_idct16x16_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; break ; case TX_8X8 : vp9_idct8x8_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; break ; case TX_4X4 : x -> itxm_add ( dqcoeff , dst , pd -> dst . stride , p -> eobs [ block ] ) ; break ; default : assert ( 0 && \"Invalid<S2SV_blank>transform<S2SV_blank>size\" ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void y4m_convert_mono_420jpeg ( y4m_input * _y4m , unsigned char * _dst , unsigned char * _aux ) { <S2SV_StartBug> int c_sz ; <S2SV_EndBug> _dst += _y4m -> pic_w * _y4m -> pic_h ; c_sz = ( ( _y4m -> pic_w + _y4m -> dst_c_dec_h - 1 ) / _y4m -> dst_c_dec_h ) * ( ( _y4m -> pic_h + _y4m -> dst_c_dec_v - 1 ) / _y4m -> dst_c_dec_v ) ; memset ( _dst , 128 , c_sz * 2 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { int c_sz ; ( void ) _aux\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9556\n\n```\nCWE-119 static Image * ReadSGIImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; SGIInfo iris_info ; size_t bytes_per_pixel , quantum ; ssize_t count , y , z ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } iris_info . magic = ReadBlobMSBShort ( image ) ; do { if ( iris_info . magic != 0x01DA ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . storage = ( unsigned char ) ReadBlobByte ( image ) ; switch ( iris_info . storage ) { case 0x00 : image -> compression = NoCompression ; break ; case 0x01 : image -> compression = RLECompression ; break ; default : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } iris_info . bytes_per_pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( iris_info . bytes_per_pixel == 0 ) || ( iris_info . bytes_per_pixel > 2 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_StartBug> iris_info . dimension = ReadBlobMSBShort ( image ) ; <S2SV_EndBug> iris_info . columns = ReadBlobMSBShort ( image ) ; iris_info . rows = ReadBlobMSBShort ( image ) ; iris_info . depth = ReadBlobMSBShort ( image ) ; if ( ( iris_info . depth == 0 ) || ( iris_info . depth > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . minimum_value = ReadBlobMSBLong ( image ) ; iris_info . maximum_value = ReadBlobMSBLong ( image ) ; iris_info . sans = ReadBlobMSBLong ( image ) ; count = ReadBlob ( image , sizeof ( iris_info . name ) , ( unsigned char * ) iris_info . name ) ; if ( ( size_t ) count != sizeof ( iris_info . name ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . name [ sizeof ( iris_info . name ) - 1 ] = '\\\\0' ; if ( * iris_info . name != '\\\\0' ) ( void ) SetImageProperty ( image , \"label\" , iris_info . name , exception ) ; iris_info . pixel_format = ReadBlobMSBLong ( image ) ; if ( iris_info . pixel_format != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , sizeof ( iris_info . filler ) , iris_info . filler ) ; if ( ( size_t ) count != sizeof ( iris_info . filler ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; image -> depth = ( size_t ) MagickMin ( iris_info . depth , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . pixel_format == 0 ) image -> depth = ( size_t ) MagickMin ( ( size_t ) 8 * iris_info . bytes_per_pixel , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . depth < 3 ) { image -> storage_class = PseudoClass ; image -> colors = ( size_t ) ( iris_info . bytes_per_pixel > 1 ? 65535 : 256 ) ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; bytes_per_pixel = ( size_t ) iris_info . bytes_per_pixel ; number_pixels = ( MagickSizeType ) iris_info . columns * iris_info . rows ; if ( ( 4 * bytes_per_pixel * number_pixels ) != ( ( MagickSizeType ) ( size_t ) ( 4 * bytes_per_pixel * number_pixels ) ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info = AcquireVirtualMemory ( iris_info . columns , iris_info . rows * 4 * bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( int ) iris_info . storage != 0x01 ) { unsigned char * scanline ; scanline = ( unsigned char * ) AcquireQuantumMemory ( iris_info . columns , bytes_per_pixel * sizeof ( * scanline ) ) ; if ( scanline == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels + bytes_per_pixel * z ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { count = ReadBlob ( image , bytes_per_pixel * iris_info . columns , scanline ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; if ( bytes_per_pixel == 2 ) for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ 2 * x ] ; * ( p + 1 ) = scanline [ 2 * x + 1 ] ; p += 8 ; } else for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ x ] ; p += 4 ; } } } scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; } else { MemoryInfo * packet_info ; size_t * runlength ; ssize_t offset , * offsets ; unsigned char * packets ; unsigned int data_order ; offsets = ( ssize_t * ) AcquireQuantumMemory ( ( size_t ) iris_info . rows , iris_info . depth * sizeof ( * offsets ) ) ; runlength = ( size_t * ) AcquireQuantumMemory ( iris_info . rows , iris_info . depth * sizeof ( * runlength ) ) ; packet_info = AcquireVirtualMemory ( ( size_t ) iris_info . columns + 10UL , 4UL * sizeof ( * packets ) ) ; if ( ( offsets == ( ssize_t * ) NULL ) || ( runlength == ( size_t * ) NULL ) || ( packet_info == ( MemoryInfo * ) NULL ) ) { if ( offsets == ( ssize_t * ) NULL ) offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; if ( runlength == ( size_t * ) NULL ) runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; if ( packet_info == ( MemoryInfo * ) NULL ) packet_info = RelinquishVirtualMemory ( packet_info ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } packets = ( unsigned char * ) GetVirtualMemoryBlob ( packet_info ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) offsets [ i ] = ( ssize_t ) ReadBlobMSBSignedLong ( image ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) { runlength [ i ] = ReadBlobMSBLong ( image ) ; if ( runlength [ i ] > ( 4 * ( size_t ) iris_info . columns + 10 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } offset = 0 ; data_order = 0 ; for ( y = 0 ; ( ( y < ( ssize_t ) iris_info . rows ) && ( data_order == 0 ) ) ; y ++ ) for ( z = 0 ; ( ( z < ( ssize_t ) iris_info . depth ) && ( data_order == 0 ) ) ; z ++ ) { if ( offsets [ y + z * iris_info . rows ] < offset ) data_order = 1 ; offset = offsets [ y + z * iris_info . rows ] ; } offset = ( ssize_t ) TellBlob ( image ) ; if ( data_order == 1 ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( MagickOffsetType ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , ( ssize_t ) iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } } } else { MagickOffsetType position ; position = TellBlob ( image ) ; p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( MagickOffsetType ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , ( ssize_t ) iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } offset = ( ssize_t ) SeekBlob ( image , position , SEEK_SET ) ; } packet_info = RelinquishVirtualMemory ( packet_info ) ; runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; } image -> alpha_trait = iris_info . depth == 4 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; if ( image -> storage_class == DirectClass ) { if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 0 ) << 8 ) | ( * ( p + 1 ) ) ) ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 2 ) << 8 ) | ( * ( p + 3 ) ) ) ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 4 ) << 8 ) | ( * ( p + 5 ) ) ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 6 ) << 8 ) | ( * ( p + 7 ) ) ) ) , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + 1 ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * ( p + 3 ) ) , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { quantum = ( * p << 8 ) ; quantum |= ( * ( p + 1 ) ) ; SetPixelIndex ( image , ( Quantum ) quantum , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; iris_info . magic = ReadBlobMSBShort ( image ) ; if ( iris_info . magic == 0x01DA ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( iris_info . magic == 0x01DA ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ReadBlobMSBShort ( image ) ; if ( ( iris_info . dimension == 0 ) || ( iris_info . dimension > 3 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7501\n\n```\nCWE-59 int rpmPackageFilesInstall ( rpmts ts , rpmte te , rpmfiles files , rpmpsm psm , char * * failedFile ) { FD_t payload = rpmtePayload ( te ) ; rpmfi fi = rpmfiNewArchiveReader ( payload , files , RPMFI_ITER_READ_ARCHIVE ) ; rpmfs fs = rpmteGetFileStates ( te ) ; rpmPlugins plugins = rpmtsPlugins ( ts ) ; struct stat sb ; int saveerrno = errno ; int rc = 0 ; int nodigest = ( rpmtsFlags ( ts ) & RPMTRANS_FLAG_NOFILEDIGEST ) ? 1 : 0 ; int nofcaps = ( rpmtsFlags ( ts ) & RPMTRANS_FLAG_NOCAPS ) ? 1 : 0 ; int firsthardlink = - 1 ; int skip ; rpmFileAction action ; char * tid = NULL ; const char * suffix ; char * fpath = NULL ; if ( fi == NULL ) { rc = RPMERR_BAD_MAGIC ; goto exit ; } rasprintf ( & tid , \";%08x\" , ( unsigned ) rpmtsGetTid ( ts ) ) ; rc = fsmMkdirs ( files , fs , plugins ) ; while ( ! rc ) { rc = rpmfiNext ( fi ) ; if ( rc < 0 ) { if ( rc == RPMERR_ITER_END ) rc = 0 ; break ; } action = rpmfsGetAction ( fs , rpmfiFX ( fi ) ) ; skip = XFA_SKIPPING ( action ) ; suffix = S_ISDIR ( rpmfiFMode ( fi ) ) ? NULL : tid ; if ( action != FA_TOUCH ) { fpath = fsmFsPath ( fi , suffix ) ; } else { fpath = fsmFsPath ( fi , \"\" ) ; } rc = rpmfiStat ( fi , 1 , & sb ) ; fsmDebug ( fpath , action , & sb ) ; if ( rc ) break ; rc = rpmpluginsCallFsmFilePre ( plugins , fi , fpath , sb . st_mode , action ) ; if ( rc ) { skip = 1 ; } else { setFileState ( fs , rpmfiFX ( fi ) ) ; } if ( ! skip ) { int setmeta = 1 ; if ( ! suffix ) { rc = fsmBackup ( fi , action ) ; } if ( ! suffix ) { rc = fsmVerify ( fpath , fi ) ; } else { rc = ( action == FA_TOUCH ) ? 0 : RPMERR_ENOENT ; } if ( S_ISREG ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMkfile ( fi , fpath , files , psm , nodigest , & setmeta , & firsthardlink ) ; } } else if ( S_ISDIR ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { mode_t mode = sb . st_mode ; mode &= ~ 07777 ; mode |= 00700 ; rc = fsmMkdir ( fpath , mode ) ; } } else if ( S_ISLNK ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmSymlink ( rpmfiFLink ( fi ) , fpath ) ; } } else if ( S_ISFIFO ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMkfifo ( fpath , 0000 ) ; } } else if ( S_ISCHR ( sb . st_mode ) || S_ISBLK ( sb . st_mode ) || S_ISSOCK ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMknod ( fpath , sb . st_mode , sb . st_rdev ) ; } } else { if ( ! IS_DEV_LOG ( fpath ) ) rc = RPMERR_UNKNOWN_FILETYPE ; } if ( ! rc && setmeta ) { rc = fsmSetmeta ( fpath , fi , plugins , action , & sb , nofcaps ) ; } } else if ( firsthardlink >= 0 && rpmfiArchiveHasContent ( fi ) ) { char * fn = rpmfilesFN ( files , firsthardlink ) ; <S2SV_StartBug> rc = expandRegular ( fi , fn , psm , nodigest , 0 ) ; <S2SV_EndBug> firsthardlink = - 1 ; free ( fn ) ; } if ( rc ) { if ( ! skip ) { if ( suffix && ( action != FA_TOUCH ) ) { ( void ) fsmRemove ( fpath , sb . st_mode ) ; } errno = saveerrno ; } } else { rpmpsmNotify ( psm , RPMCALLBACK_INST_PROGRESS , rpmfiArchiveTell ( fi ) ) ; if ( ! skip ) { if ( suffix ) rc = fsmBackup ( fi , action ) ; if ( ! rc ) rc = fsmCommit ( & fpath , fi , action , suffix ) ; } } if ( rc ) * failedFile = xstrdup ( fpath ) ; rpmpluginsCallFsmFilePost ( plugins , fi , fpath , sb . st_mode , action , rc ) ; fpath = _free ( fpath ) ; } rpmswAdd ( rpmtsOp ( ts , RPMTS_OP_UNCOMPRESS ) , fdOp ( payload , FDSTAT_READ ) ) ; rpmswAdd ( rpmtsOp ( ts , RPMTS_OP_DIGEST ) , fdOp ( payload , FDSTAT_DIGEST ) ) ; exit : rpmfiArchiveClose ( fi ) ; rpmfiFree ( fi ) ; Fclose ( payload ) ; free ( tid ) ; free ( fpath ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , psm , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 ssize_t cdf_read_short_sector ( const cdf_stream_t * sst , void * buf , size_t offs , size_t len , const cdf_header_t * h , cdf_secid_t id ) { <S2SV_StartBug> size_t ss = CDF_SEC_SIZE ( h ) ; <S2SV_EndBug> size_t pos = CDF_SHORT_SEC_POS ( h , id ) ; assert ( ss == len ) ; <S2SV_StartBug> if ( pos > ss * sst -> sst_len ) { <S2SV_EndBug> DPRINTF ( ( \"Out<S2SV_blank>of<S2SV_blank>bounds<S2SV_blank>read<S2SV_blank>%\" SIZE_T_FORMAT \"u<S2SV_blank>><S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , <S2SV_StartBug> pos , ss * sst -> sst_len ) ) ; <S2SV_EndBug> return - 1 ; } ( void ) memcpy ( ( ( char * ) buf ) + offs , ( ( const char * ) sst -> sst_tab ) + pos , len ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t ss = CDF_SHORT_SEC_SIZE <S2SV_ModEnd> ( h ) <S2SV_ModStart> ( pos > CDF_SEC_SIZE ( h ) <S2SV_ModEnd> * sst -> <S2SV_ModStart> , pos , CDF_SEC_SIZE ( h ) <S2SV_ModEnd> * sst ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7884\n\n```\nCWE-200 static int vivid_fb_ioctl ( struct fb_info * info , unsigned cmd , unsigned long arg ) { struct vivid_dev * dev = ( struct vivid_dev * ) info -> par ; switch ( cmd ) { case FBIOGET_VBLANK : { <S2SV_StartBug> struct fb_vblank vblank ; <S2SV_EndBug> vblank . flags = FB_VBLANK_HAVE_COUNT | FB_VBLANK_HAVE_VCOUNT | FB_VBLANK_HAVE_VSYNC ; vblank . count = 0 ; vblank . vcount = 0 ; vblank . hcount = 0 ; if ( copy_to_user ( ( void __user * ) arg , & vblank , sizeof ( vblank ) ) ) return - EFAULT ; return 0 ; } default : dprintk ( dev , 1 , \"Unknown<S2SV_blank>ioctl<S2SV_blank>%08x\\\\n\" , cmd ) ; return - EINVAL ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct fb_vblank vblank ; memset ( & vblank , 0 , sizeof ( vblank ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 void jas_matrix_asl ( jas_matrix_t * matrix , int n ) { <S2SV_StartBug> int i ; <S2SV_EndBug> int j ; jas_seqent_t * rowstart ; <S2SV_StartBug> int rowstep ; <S2SV_EndBug> jas_seqent_t * data ; if ( jas_matrix_numrows ( matrix ) > 0 && jas_matrix_numcols ( matrix ) > 0 ) { assert ( matrix -> rows_ ) ; rowstep = jas_matrix_rowstep ( matrix ) ; for ( i = matrix -> numrows_ , rowstart = matrix -> rows_ [ 0 ] ; i > 0 ; -- i , rowstart += rowstep ) { for ( j = matrix -> numcols_ , data = rowstart ; j > 0 ; -- j , ++ data ) { * data = jas_seqent_asl ( * data , n ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> n ) { jas_matind_t i ; jas_matind_t <S2SV_ModEnd> j ; jas_seqent_t <S2SV_ModStart> * rowstart ; jas_matind_t <S2SV_ModEnd> rowstep ; jas_seqent_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static void ext4_end_io_work ( struct work_struct * work ) { ext4_io_end_t * io = container_of ( work , ext4_io_end_t , work ) ; struct inode * inode = io -> inode ; <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> mutex_lock ( & inode -> i_mutex ) ; ret = ext4_end_io_nolock ( io ) ; <S2SV_StartBug> if ( ret >= 0 ) { <S2SV_EndBug> if ( ! list_empty ( & io -> list ) ) list_del_init ( & io -> list ) ; <S2SV_StartBug> ext4_free_io_end ( io ) ; <S2SV_EndBug> } mutex_unlock ( & inode -> i_mutex ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> inode ; struct ext4_inode_info * ei = EXT4_I ( inode ) ; unsigned long flags ; int ret <S2SV_ModEnd> ; mutex_lock ( <S2SV_ModStart> if ( ret < <S2SV_ModEnd> 0 ) { <S2SV_ModStart> 0 ) { mutex_unlock ( & inode -> i_mutex ) ; return ; } spin_lock_irqsave ( & ei -> i_completed_io_lock , flags ) ; <S2SV_ModStart> list ) ; spin_unlock_irqrestore ( & ei -> i_completed_io_lock , flags ) ; <S2SV_ModEnd> mutex_unlock ( & <S2SV_ModStart> i_mutex ) ; ext4_free_io_end ( io ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4502\n\n```\nCWE-119 bool initiate_stratum ( struct pool * pool ) { bool ret = false , recvd = false , noresume = false , sockd = false ; char s [ RBUFSIZE ] , * sret = NULL , * nonce1 , * sessionid ; json_t * val = NULL , * res_val , * err_val ; json_error_t err ; int n2size ; resend : if ( ! setup_stratum_socket ( pool ) ) { applog ( LOG_INFO , \"setup_stratum_socket()<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>failed\" , get_pool_name ( pool ) ) ; sockd = false ; goto out ; } sockd = true ; if ( recvd ) { clear_sock ( pool ) ; sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[]}\" , swork_id ++ ) ; } else { if ( pool -> sessionid ) sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[\\\\\"\" PACKAGE \"/\" VERSION \"\\\\\",<S2SV_blank>\\\\\"%s\\\\\"]}\" , swork_id ++ , pool -> sessionid ) ; else sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[\\\\\"\" PACKAGE \"/\" VERSION \"\\\\\"]}\" , swork_id ++ ) ; } if ( __stratum_send ( pool , s , strlen ( s ) ) != SEND_OK ) { applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>s<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } if ( ! socket_full ( pool , DEFAULT_SOCKWAIT ) ) { applog ( LOG_DEBUG , \"Timed<S2SV_blank>out<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>response<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } sret = recv_line ( pool ) ; if ( ! sret ) goto out ; recvd = true ; val = JSON_LOADS ( sret , & err ) ; free ( sret ) ; if ( ! val ) { applog ( LOG_INFO , \"JSON<S2SV_blank>decode<S2SV_blank>failed(%d):<S2SV_blank>%s\" , err . line , err . text ) ; goto out ; } res_val = json_object_get ( val , \"result\" ) ; err_val = json_object_get ( val , \"error\" ) ; if ( ! res_val || json_is_null ( res_val ) || ( err_val && ! json_is_null ( err_val ) ) ) { char * ss ; if ( err_val ) ss = json_dumps ( err_val , JSON_INDENT ( 3 ) ) ; else ss = strdup ( \"(unknown<S2SV_blank>reason)\" ) ; applog ( LOG_INFO , \"JSON-RPC<S2SV_blank>decode<S2SV_blank>failed:<S2SV_blank>%s\" , ss ) ; free ( ss ) ; goto out ; } sessionid = get_sessionid ( res_val ) ; if ( ! sessionid ) applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>sessionid<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; nonce1 = json_array_string ( res_val , 1 ) ; if ( ! nonce1 ) { applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>nonce1<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; free ( sessionid ) ; goto out ; } n2size = json_integer_value ( json_array_get ( res_val , 2 ) ) ; <S2SV_StartBug> if ( ! n2size ) { <S2SV_EndBug> applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>n2size<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; free ( sessionid ) ; free ( nonce1 ) ; goto out ; } cg_wlock ( & pool -> data_lock ) ; pool -> sessionid = sessionid ; pool -> nonce1 = nonce1 ; pool -> n1_len = strlen ( nonce1 ) / 2 ; free ( pool -> nonce1bin ) ; pool -> nonce1bin = ( unsigned char * ) calloc ( pool -> n1_len , 1 ) ; if ( unlikely ( ! pool -> nonce1bin ) ) quithere ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>pool->nonce1bin\" ) ; hex2bin ( pool -> nonce1bin , pool -> nonce1 , pool -> n1_len ) ; pool -> n2size = n2size ; cg_wunlock ( & pool -> data_lock ) ; if ( sessionid ) applog ( LOG_DEBUG , \"%s<S2SV_blank>stratum<S2SV_blank>session<S2SV_blank>id:<S2SV_blank>%s\" , get_pool_name ( pool ) , pool -> sessionid ) ; ret = true ; out : if ( ret ) { if ( ! pool -> stratum_url ) pool -> stratum_url = pool -> sockaddr_url ; pool -> stratum_active = true ; pool -> swork . diff = 1 ; if ( opt_protocol ) { applog ( LOG_DEBUG , \"%s<S2SV_blank>confirmed<S2SV_blank>mining.subscribe<S2SV_blank>with<S2SV_blank>extranonce1<S2SV_blank>%s<S2SV_blank>extran2size<S2SV_blank>%d\" , get_pool_name ( pool ) , pool -> nonce1 , pool -> n2size ) ; } } else { if ( recvd && ! noresume ) { cg_wlock ( & pool -> data_lock ) ; free ( pool -> sessionid ) ; free ( pool -> nonce1 ) ; pool -> sessionid = pool -> nonce1 = NULL ; cg_wunlock ( & pool -> data_lock ) ; applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>resume<S2SV_blank>stratum,<S2SV_blank>trying<S2SV_blank>afresh\" ) ; noresume = true ; json_decref ( val ) ; goto resend ; } applog ( LOG_DEBUG , \"Initiating<S2SV_blank>stratum<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>%s\" , get_pool_name ( pool ) ) ; if ( sockd ) { applog ( LOG_DEBUG , \"Suspending<S2SV_blank>stratum<S2SV_blank>on<S2SV_blank>%s\" , get_pool_name ( pool ) ) ; suspend_stratum ( pool ) ; } } json_decref ( val ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( n2size < 1 ) <S2SV_ModEnd> { applog (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4312\n\n```\nCWE-119 void unix_inflight ( struct file * fp ) { struct sock * s = unix_get_socket ( fp ) ; <S2SV_StartBug> if ( s ) { <S2SV_EndBug> <S2SV_StartBug> struct unix_sock * u = unix_sk ( s ) ; <S2SV_EndBug> spin_lock ( & unix_gc_lock ) ; if ( atomic_long_inc_return ( & u -> inflight ) == 1 ) { BUG_ON ( ! list_empty ( & u -> link ) ) ; list_add_tail ( & u -> link , & gc_inflight_list ) ; } else { BUG_ON ( list_empty ( & u -> link ) ) ; } unix_tot_inflight ++ ; <S2SV_StartBug> spin_unlock ( & unix_gc_lock ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fp ) ; spin_lock ( & unix_gc_lock ) ; <S2SV_ModStart> unix_sk ( s <S2SV_ModEnd> ) ; if <S2SV_ModStart> unix_tot_inflight ++ ; } fp -> f_cred -> user -> unix_inflight ++ ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-9336\n\n```\nCWE-415 static BOOL GetStartupData ( HANDLE pipe , STARTUP_DATA * sud ) { size_t size , len ; <S2SV_StartBug> BOOL ret = FALSE ; <S2SV_EndBug> WCHAR * data = NULL ; DWORD bytes , read ; bytes = PeekNamedPipeAsync ( pipe , 1 , & exit_event ) ; if ( bytes == 0 ) { MsgToEventLog ( M_SYSERR , TEXT ( \"PeekNamedPipeAsync<S2SV_blank>failed\" ) ) ; ReturnLastError ( pipe , L\"PeekNamedPipeAsync\" ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } size = bytes / sizeof ( * data ) ; if ( size == 0 ) { MsgToEventLog ( M_SYSERR , TEXT ( \"malformed<S2SV_blank>startup<S2SV_blank>data:<S2SV_blank>1<S2SV_blank>byte<S2SV_blank>received\" ) ) ; ReturnError ( pipe , ERROR_STARTUP_DATA , L\"GetStartupData\" , 1 , & exit_event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } data = malloc ( bytes ) ; if ( data == NULL ) { MsgToEventLog ( M_SYSERR , TEXT ( \"malloc<S2SV_blank>failed\" ) ) ; ReturnLastError ( pipe , L\"malloc\" ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } read = ReadPipeAsync ( pipe , data , bytes , 1 , & exit_event ) ; if ( bytes != read ) { MsgToEventLog ( M_SYSERR , TEXT ( \"ReadPipeAsync<S2SV_blank>failed\" ) ) ; ReturnLastError ( pipe , L\"ReadPipeAsync\" ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } if ( data [ size - 1 ] != 0 ) { MsgToEventLog ( M_ERR , TEXT ( \"Startup<S2SV_blank>data<S2SV_blank>is<S2SV_blank>not<S2SV_blank>NULL<S2SV_blank>terminated\" ) ) ; ReturnError ( pipe , ERROR_STARTUP_DATA , L\"GetStartupData\" , 1 , & exit_event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } sud -> directory = data ; len = wcslen ( sud -> directory ) + 1 ; size -= len ; if ( size <= 0 ) { MsgToEventLog ( M_ERR , TEXT ( \"Startup<S2SV_blank>data<S2SV_blank>ends<S2SV_blank>at<S2SV_blank>working<S2SV_blank>directory\" ) ) ; ReturnError ( pipe , ERROR_STARTUP_DATA , L\"GetStartupData\" , 1 , & exit_event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } sud -> options = sud -> directory + len ; len = wcslen ( sud -> options ) + 1 ; size -= len ; if ( size <= 0 ) { MsgToEventLog ( M_ERR , TEXT ( \"Startup<S2SV_blank>data<S2SV_blank>ends<S2SV_blank>at<S2SV_blank>command<S2SV_blank>line<S2SV_blank>options\" ) ) ; ReturnError ( pipe , ERROR_STARTUP_DATA , L\"GetStartupData\" , 1 , & exit_event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } sud -> std_input = sud -> options + len ; <S2SV_StartBug> data = NULL ; <S2SV_EndBug> <S2SV_StartBug> ret = TRUE ; <S2SV_EndBug> out : free ( data ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , len ; <S2SV_ModEnd> WCHAR * data <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } size <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } data <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } read <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } sud <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } sud <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } sud <S2SV_ModStart> + len ; return TRUE ; err : sud -> directory <S2SV_ModEnd> = NULL ; <S2SV_ModStart> = NULL ; <S2SV_ModEnd> free ( data <S2SV_ModStart> ) ; return FALSE <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3156\n\n```\nCWE-399 void fib_del_ifaddr ( struct in_ifaddr * ifa , struct in_ifaddr * iprim ) { struct in_device * in_dev = ifa -> ifa_dev ; struct net_device * dev = in_dev -> dev ; struct in_ifaddr * ifa1 ; struct in_ifaddr * prim = ifa , * prim1 = NULL ; __be32 brd = ifa -> ifa_address | ~ ifa -> ifa_mask ; __be32 any = ifa -> ifa_address & ifa -> ifa_mask ; # define LOCAL_OK 1 # define BRD_OK 2 # define BRD0_OK 4 # define BRD1_OK 8 unsigned int ok = 0 ; int subnet = 0 ; int gone = 1 ; int same_prefsrc = 0 ; if ( ifa -> ifa_flags & IFA_F_SECONDARY ) { prim = inet_ifa_byprefix ( in_dev , any , ifa -> ifa_mask ) ; if ( ! prim ) { pr_warn ( \"%s:<S2SV_blank>bug:<S2SV_blank>prim<S2SV_blank>==<S2SV_blank>NULL\\\\n\" , __func__ ) ; return ; } if ( iprim && iprim != prim ) { pr_warn ( \"%s:<S2SV_blank>bug:<S2SV_blank>iprim<S2SV_blank>!=<S2SV_blank>prim\\\\n\" , __func__ ) ; return ; } } else if ( ! ipv4_is_zeronet ( any ) && ( any != ifa -> ifa_local || ifa -> ifa_prefixlen < 32 ) ) { if ( ! ( ifa -> ifa_flags & IFA_F_NOPREFIXROUTE ) ) fib_magic ( RTM_DELROUTE , dev -> flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST , any , ifa -> ifa_prefixlen , prim ) ; subnet = 1 ; } <S2SV_StartBug> for ( ifa1 = in_dev -> ifa_list ; ifa1 ; ifa1 = ifa1 -> ifa_next ) { <S2SV_EndBug> if ( ifa1 == ifa ) { gone = 0 ; continue ; } if ( iprim && ifa1 -> ifa_mask == iprim -> ifa_mask && inet_ifa_match ( ifa1 -> ifa_address , iprim ) ) continue ; if ( ifa1 -> ifa_flags & IFA_F_SECONDARY ) { if ( ifa1 -> ifa_mask == prim -> ifa_mask && inet_ifa_match ( ifa1 -> ifa_address , prim ) ) prim1 = prim ; else { if ( ! same_prefsrc ) continue ; if ( ! prim1 || ifa1 -> ifa_mask != prim1 -> ifa_mask || ! inet_ifa_match ( ifa1 -> ifa_address , prim1 ) ) prim1 = inet_ifa_byprefix ( in_dev , ifa1 -> ifa_address , ifa1 -> ifa_mask ) ; if ( ! prim1 ) continue ; if ( prim1 -> ifa_local != prim -> ifa_local ) continue ; } } else { if ( prim -> ifa_local != ifa1 -> ifa_local ) continue ; prim1 = ifa1 ; if ( prim != prim1 ) same_prefsrc = 1 ; } if ( ifa -> ifa_local == ifa1 -> ifa_local ) ok |= LOCAL_OK ; if ( ifa -> ifa_broadcast == ifa1 -> ifa_broadcast ) ok |= BRD_OK ; if ( brd == ifa1 -> ifa_broadcast ) ok |= BRD1_OK ; if ( any == ifa1 -> ifa_broadcast ) ok |= BRD0_OK ; if ( prim1 == ifa1 && ifa1 -> ifa_prefixlen < 31 ) { __be32 brd1 = ifa1 -> ifa_address | ~ ifa1 -> ifa_mask ; __be32 any1 = ifa1 -> ifa_address & ifa1 -> ifa_mask ; if ( ! ipv4_is_zeronet ( any1 ) ) { if ( ifa -> ifa_broadcast == brd1 || ifa -> ifa_broadcast == any1 ) ok |= BRD_OK ; if ( brd == brd1 || brd == any1 ) ok |= BRD1_OK ; if ( any == brd1 || any == any1 ) ok |= BRD0_OK ; } } <S2SV_StartBug> } <S2SV_EndBug> if ( ! ( ok & BRD_OK ) ) fib_magic ( RTM_DELROUTE , RTN_BROADCAST , ifa -> ifa_broadcast , 32 , prim ) ; if ( subnet && ifa -> ifa_prefixlen < 31 ) { if ( ! ( ok & BRD1_OK ) ) fib_magic ( RTM_DELROUTE , RTN_BROADCAST , brd , 32 , prim ) ; if ( ! ( ok & BRD0_OK ) ) fib_magic ( RTM_DELROUTE , RTN_BROADCAST , any , 32 , prim ) ; } if ( ! ( ok & LOCAL_OK ) ) { unsigned int addr_type ; fib_magic ( RTM_DELROUTE , RTN_LOCAL , ifa -> ifa_local , 32 , prim ) ; addr_type = inet_addr_type_dev_table ( dev_net ( dev ) , dev , ifa -> ifa_local ) ; if ( gone && addr_type != RTN_LOCAL ) { if ( fib_sync_down_addr ( dev_net ( dev ) , ifa -> ifa_local ) ) fib_flush ( dev_net ( dev ) ) ; } } # undef LOCAL_OK # undef BRD_OK # undef BRD0_OK # undef BRD1_OK }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; } if ( in_dev -> dead ) goto no_promotions ; <S2SV_ModStart> } } } no_promotions :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static void process_secondary_order ( STREAM s ) { uint16 length ; uint16 flags ; uint8 type ; uint8 * next_order ; <S2SV_StartBug> in_uint16_le ( s , length ) ; <S2SV_EndBug> in_uint16_le ( s , flags ) ; <S2SV_StartBug> in_uint8 ( s , type ) ; <S2SV_EndBug> next_order = s -> p + ( sint16 ) length + 7 ; switch ( type ) { case RDP_ORDER_RAW_BMPCACHE : process_raw_bmpcache ( s ) ; break ; case RDP_ORDER_COLCACHE : process_colcache ( s ) ; break ; case RDP_ORDER_BMPCACHE : process_bmpcache ( s ) ; break ; case RDP_ORDER_FONTCACHE : process_fontcache ( s ) ; break ; case RDP_ORDER_RAW_BMPCACHE2 : process_bmpcache2 ( s , flags , False ) ; break ; case RDP_ORDER_BMPCACHE2 : process_bmpcache2 ( s , flags , True ) ; break ; case RDP_ORDER_BRUSHCACHE : process_brushcache ( s , flags ) ; break ; default : logger ( Graphics , Warning , \"process_secondary_order(),<S2SV_blank>unhandled<S2SV_blank>secondary<S2SV_blank>order<S2SV_blank>%d\" , type ) ; } s -> p = next_order ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * next_order ; struct stream packet = * s ; <S2SV_ModStart> type ) ; if ( ! s_check_rem ( s , length + 7 ) ) { rdp_protocol_error ( \"process_secondary_order(),<S2SV_blank>next<S2SV_blank>order<S2SV_blank>pointer<S2SV_blank>would<S2SV_blank>overrun<S2SV_blank>stream\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_rate_correction_factor ( VP9_COMP * cpi , double factor ) { <S2SV_StartBug> if ( cpi -> common . frame_type == KEY_FRAME ) { <S2SV_EndBug> <S2SV_StartBug> cpi -> rc . key_frame_rate_correction_factor = factor ; <S2SV_EndBug> } else { if ( ( cpi -> refresh_alt_ref_frame || cpi -> refresh_golden_frame ) && <S2SV_StartBug> ! cpi -> rc . is_src_frame_alt_ref && <S2SV_EndBug> <S2SV_StartBug> ! ( cpi -> use_svc && cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) ) <S2SV_EndBug> cpi -> rc . gf_rate_correction_factor = factor ; else <S2SV_StartBug> cpi -> rc . rate_correction_factor = factor ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> factor ) { RATE_CONTROL * const rc = & cpi -> rc ; factor /= rcf_mult [ cpi -> rc . frame_size_selector ] ; factor = fclamp ( factor , MIN_BPB_FACTOR , MAX_BPB_FACTOR ) ; <S2SV_ModStart> KEY_FRAME ) { rc -> rate_correction_factors [ KF_STD ] = factor ; } else if ( cpi -> oxcf . pass == 2 ) { RATE_FACTOR_LEVEL rf_lvl = cpi -> twopass . gf_group . rf_level [ cpi -> twopass . gf_group . index ] ; rc -> rate_correction_factors [ rf_lvl ] <S2SV_ModEnd> = factor ; <S2SV_ModStart> ) && ! rc -> <S2SV_ModEnd> is_src_frame_alt_ref && ! <S2SV_ModStart> is_src_frame_alt_ref && ! <S2SV_ModEnd> cpi -> use_svc <S2SV_ModStart> -> use_svc && ( <S2SV_ModStart> -> oxcf . rc_mode != VPX_CBR || cpi -> oxcf . gf_cbr_boost_pct > 20 ) ) rc -> rate_correction_factors [ GF_ARF_STD ] <S2SV_ModEnd> = factor ; <S2SV_ModStart> factor ; else rc -> rate_correction_factors [ INTER_NORMAL ] <S2SV_ModEnd> = factor ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2546\n\n```\nCWE-362 static int snd_timer_user_open ( struct inode * inode , struct file * file ) { struct snd_timer_user * tu ; int err ; err = nonseekable_open ( inode , file ) ; if ( err < 0 ) return err ; tu = kzalloc ( sizeof ( * tu ) , GFP_KERNEL ) ; if ( tu == NULL ) return - ENOMEM ; spin_lock_init ( & tu -> qlock ) ; init_waitqueue_head ( & tu -> qchange_sleep ) ; <S2SV_StartBug> mutex_init ( & tu -> tread_sem ) ; <S2SV_EndBug> tu -> ticks = 1 ; tu -> queue_size = 128 ; tu -> queue = kmalloc ( tu -> queue_size * sizeof ( struct snd_timer_read ) , GFP_KERNEL ) ; if ( tu -> queue == NULL ) { kfree ( tu ) ; return - ENOMEM ; } file -> private_data = tu ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & tu -> ioctl_lock <S2SV_ModEnd> ) ; tu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13186\n\n```\nCWE-20 WORD32 ih264d_parse_decode_slice ( UWORD8 u1_is_idr_slice , UWORD8 u1_nal_ref_idc , dec_struct_t * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; dec_pic_params_t * ps_pps ; dec_seq_params_t * ps_seq ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; pocstruct_t s_tmp_poc ; WORD32 i_delta_poc [ 2 ] ; WORD32 i4_poc = 0 ; UWORD16 u2_first_mb_in_slice , u2_frame_num ; UWORD8 u1_field_pic_flag , u1_redundant_pic_cnt = 0 , u1_slice_type ; UWORD32 u4_idr_pic_id = 0 ; UWORD8 u1_bottom_field_flag , u1_pic_order_cnt_type ; UWORD8 u1_nal_unit_type ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; WORD8 i1_is_end_of_poc ; WORD32 ret , end_of_frame ; WORD32 prev_slice_err , num_mb_skipped ; UWORD8 u1_mbaff ; pocstruct_t * ps_cur_poc ; UWORD32 u4_temp ; WORD32 i_temp ; UWORD32 u4_call_end_of_pic = 0 ; ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read_slc = 0 ; u2_first_mb_in_slice = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u2_first_mb_in_slice > ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) ) { return ERROR_CORRUPTED_SLICE ; } if ( ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) <= ps_dec -> u2_cur_mb_addr ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { return ERROR_CORRUPTED_SLICE ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>first_mb_in_slice\" , u2_first_mb_in_slice ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > 9 ) return ERROR_INV_SLC_TYPE_T ; u1_slice_type = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_type\" , ( u1_slice_type ) ) ; if ( u1_slice_type > 4 ) { u1_slice_type -= 5 ; } { UWORD32 skip ; if ( ( ps_dec -> i4_app_skip_mode == IVD_SKIP_PB ) || ( ps_dec -> i4_dec_skip_mode == IVD_SKIP_PB ) ) { UWORD32 u4_bit_stream_offset = 0 ; if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else if ( ( I_SLICE == u1_slice_type ) && ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else { skip = 1 ; } if ( ( 0 == u2_first_mb_in_slice ) && ( 1 == ps_dec -> u4_prev_nal_skipped ) ) { skip = 0 ; } if ( skip ) { ps_dec -> u4_prev_nal_skipped = 1 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_PB ; return 0 ; } else { if ( 1 == ps_dec -> u4_prev_nal_skipped ) { ps_dec -> u4_return_to_app = 1 ; return 0 ; } } } } u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp & MASK_ERR_PIC_SET_ID ) return ERROR_INV_SLICE_HDR_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_parameter_set_id\" , u4_temp ) ; ps_pps = & ps_dec -> ps_pps [ u4_temp ] ; if ( FALSE == ps_pps -> u1_is_valid ) { return ERROR_INV_SLICE_HDR_T ; } ps_seq = ps_pps -> ps_sps ; if ( ! ps_seq ) return ERROR_INV_SLICE_HDR_T ; if ( FALSE == ps_seq -> u1_is_valid ) return ERROR_INV_SLICE_HDR_T ; u2_frame_num = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_bits_in_frm_num ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>frame_num\" , u2_frame_num ) ; if ( ! ps_dec -> u1_first_slice_in_stream && ps_dec -> u4_first_slice_in_pic ) { pocstruct_t * ps_prev_poc = & ps_dec -> s_prev_pic_poc ; pocstruct_t * ps_cur_poc = & ps_dec -> s_cur_pic_poc ; ps_dec -> u2_mbx = 0xffff ; ps_dec -> u2_mby = 0 ; if ( ( 0 == u1_is_idr_slice ) && ps_cur_slice -> u1_nal_ref_idc ) ps_dec -> u2_prev_ref_frame_num = ps_cur_slice -> u2_frame_num ; if ( u1_is_idr_slice || ps_cur_slice -> u1_mmco_equalto5 ) ps_dec -> u2_prev_ref_frame_num = 0 ; if ( ps_dec -> ps_cur_sps -> u1_gaps_in_frame_num_value_allowed_flag ) { ih264d_decode_gaps_in_frame_num ( ps_dec , u2_frame_num ) ; } ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst ; ps_prev_poc -> u2_frame_num = ps_cur_poc -> u2_frame_num ; ps_prev_poc -> u1_mmco_equalto5 = ps_cur_slice -> u1_mmco_equalto5 ; if ( ps_cur_slice -> u1_nal_ref_idc ) { ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] ; ps_prev_poc -> u1_bot_field = ps_cur_poc -> u1_bot_field ; } ps_dec -> u2_total_mbs_coded = 0 ; } if ( ! ps_seq -> u1_frame_mbs_only_flag ) { u1_field_pic_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>field_pic_flag\" , u1_field_pic_flag ) ; u1_bottom_field_flag = 0 ; if ( u1_field_pic_flag ) { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan_fld ; u1_bottom_field_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>bottom_field_flag\" , u1_bottom_field_flag ) ; } else { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } } else { u1_field_pic_flag = 0 ; u1_bottom_field_flag = 0 ; ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } u1_nal_unit_type = SLICE_NAL ; if ( u1_is_idr_slice ) { u1_nal_unit_type = IDR_SLICE_NAL ; u4_idr_pic_id = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_idr_pic_id > 65535 ) return ERROR_INV_SLICE_HDR_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank><S2SV_blank>\" , u4_idr_pic_id ) ; } i_delta_poc [ 0 ] = i_delta_poc [ 1 ] = 0 ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; u1_pic_order_cnt_type = ps_seq -> u1_pic_order_cnt_type ; if ( u1_pic_order_cnt_type == 0 ) { i_temp = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_log2_max_pic_order_cnt_lsb_minus ) ; if ( i_temp < 0 || i_temp >= ps_seq -> i4_max_pic_order_cntLsb ) return ERROR_INV_SLICE_HDR_T ; s_tmp_poc . i4_pic_order_cnt_lsb = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_order_cnt_lsb\" , s_tmp_poc . i4_pic_order_cnt_lsb ) ; if ( ( ps_pps -> u1_pic_order_present_flag == 1 ) && ( ! u1_field_pic_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt_bottom = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt_bottom\" , s_tmp_poc . i4_delta_pic_order_cnt_bottom ) ; } } s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = 0 ; if ( u1_pic_order_cnt_type == 1 && ( ! ps_seq -> u1_delta_pic_order_always_zero_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[0]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] ) ; if ( ps_pps -> u1_pic_order_present_flag && ! u1_field_pic_flag ) { s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[1]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] ) ; } } if ( ps_pps -> u1_redundant_pic_cnt_present_flag ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_REDUNDANT_PIC_CNT ) return ERROR_INV_SLICE_HDR_T ; u1_redundant_pic_cnt = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>redundant_pic_cnt\" , u1_redundant_pic_cnt ) ; } i1_is_end_of_poc = 1 ; ps_dec -> ps_dec_err_status -> u1_err_flag &= MASK_REJECT_CUR_PIC ; if ( ps_dec -> u4_first_slice_in_pic == 0 ) { i1_is_end_of_poc = ih264d_is_end_of_pic ( u2_frame_num , u1_nal_ref_idc , & s_tmp_poc , & ps_dec -> s_cur_pic_poc , ps_cur_slice , u1_pic_order_cnt_type , u1_nal_unit_type , u4_idr_pic_id , u1_field_pic_flag , u1_bottom_field_flag ) ; if ( i1_is_end_of_poc ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } } u1_mbaff = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; prev_slice_err = 0 ; if ( i1_is_end_of_poc || ps_dec -> u1_first_slice_in_stream ) { if ( u2_frame_num != ps_dec -> u2_prv_frame_num && ps_dec -> u1_top_bottom_decoded != 0 && ps_dec -> u1_top_bottom_decoded != ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) ) { ps_dec -> u1_dangling_field = 1 ; if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; } else { prev_slice_err = 2 ; } if ( ps_dec -> u1_top_bottom_decoded == TOP_FIELD_ONLY ) ps_cur_slice -> u1_bottom_field_flag = 1 ; else ps_cur_slice -> u1_bottom_field_flag = 0 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & ps_dec -> s_cur_pic_poc ; u1_is_idr_slice = ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ; } else if ( ps_dec -> u4_first_slice_in_pic ) { if ( u2_first_mb_in_slice > 0 ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; ps_cur_poc = & s_tmp_poc ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; ps_cur_slice -> u1_mbaff_frame_flag = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; } } else { prev_slice_err = 2 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } } else { if ( ( u2_first_mb_in_slice << u1_mbaff ) > ps_dec -> u2_total_mbs_coded ) { prev_slice_err = 2 ; num_mb_skipped = ( u2_first_mb_in_slice << u1_mbaff ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } else if ( ( u2_first_mb_in_slice << u1_mbaff ) < ps_dec -> u2_total_mbs_coded ) { return ERROR_CORRUPTED_SLICE ; } } if ( prev_slice_err ) { ret = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , u1_is_idr_slice , u2_frame_num , ps_cur_poc , prev_slice_err ) ; if ( ps_dec -> u1_dangling_field == 1 ) { ps_dec -> u1_second_field = 1 - ps_dec -> u1_second_field ; ps_dec -> u1_first_slice_in_stream = 0 ; ps_dec -> u1_top_bottom_decoded = TOP_FIELD_ONLY | BOT_FIELD_ONLY ; return ERROR_DANGLING_FIELD_IN_PIC ; } if ( prev_slice_err == 2 ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_IN_LAST_SLICE_OF_PIC ; } if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } if ( ret != OK ) return ret ; i1_is_end_of_poc = 0 ; } if ( ps_dec -> u4_first_slice_in_pic == 0 ) { ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } if ( ( ps_dec -> u1_separate_parse == 0 ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { ps_dec -> ps_decode_cur_slice ++ ; } ps_dec -> u1_slice_header_done = 0 ; if ( u1_field_pic_flag ) { ps_dec -> u2_prv_frame_num = u2_frame_num ; } if ( ps_cur_slice -> u1_mmco_equalto5 ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; if ( ! ps_cur_slice -> u1_field_pic_flag ) { i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; } else if ( ! ps_cur_slice -> u1_bottom_field_flag ) i4_temp_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; else i4_temp_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_poc = i4_temp_poc ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } if ( ps_dec -> u4_first_slice_in_pic ) { ret = ih264d_decode_pic_order_cnt ( u1_is_idr_slice , u2_frame_num , & ps_dec -> s_prev_pic_poc , & s_tmp_poc , ps_cur_slice , ps_pps , u1_nal_ref_idc , u1_bottom_field_flag , u1_field_pic_flag , & i4_poc ) ; if ( ret != OK ) return ret ; if ( i4_poc >= ps_dec -> i4_max_poc ) ps_dec -> i4_max_poc = i4_poc ; if ( i4_poc == 0 ) { ps_dec -> i4_prev_max_display_seq = ps_dec -> i4_prev_max_display_seq + ps_dec -> i4_max_poc + ps_dec -> u1_max_dec_frame_buffering + 1 ; ps_dec -> i4_max_poc = 0 ; } } ps_cur_slice -> i4_delta_pic_order_cnt [ 0 ] = i_delta_poc [ 0 ] ; ps_cur_slice -> i4_delta_pic_order_cnt [ 1 ] = i_delta_poc [ 1 ] ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u2_first_mb_in_slice = u2_first_mb_in_slice ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> u1_slice_type = u1_slice_type ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; if ( ps_seq -> u1_frame_mbs_only_flag ) ps_cur_slice -> u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; else ps_cur_slice -> u1_direct_8x8_inference_flag = 1 ; if ( u1_slice_type == B_SLICE ) { ps_cur_slice -> u1_direct_spatial_mv_pred_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>direct_spatial_mv_pred_flag\" , ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ; if ( ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ps_cur_slice -> pf_decodeDirect = ih264d_decode_spatial_direct ; else ps_cur_slice -> pf_decodeDirect = ih264d_decode_temporal_direct ; if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaffB ; } else { if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; } if ( ps_dec -> u4_first_slice_in_pic ) { if ( u2_first_mb_in_slice == 0 ) { ret = ih264d_start_of_pic ( ps_dec , i4_poc , & s_tmp_poc , u2_frame_num , ps_pps ) ; if ( ret != OK ) return ret ; } ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } { UWORD8 uc_nofield_nombaff ; uc_nofield_nombaff = ( ( ps_dec -> ps_cur_slice -> u1_field_pic_flag == 0 ) && ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag == 0 ) && ( u1_slice_type != B_SLICE ) && ( ps_dec -> ps_cur_pps -> u1_wted_pred_flag == 0 ) ) ; if ( uc_nofield_nombaff ) { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; } else { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_mp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_mp ; } } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u4_frm_sei_sync == u2_frame_num ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; ps_err -> u4_frm_sei_sync = SYNC_FRM_DEFAULT ; } ps_err -> u4_cur_frm = u2_frame_num ; } { WORD32 i4_skip_b_pic , i4_skip_p_pic ; i4_skip_b_pic = ( ps_dec -> u4_skip_frm_mask & B_SLC_BIT ) && ( B_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; i4_skip_p_pic = ( ps_dec -> u4_skip_frm_mask & P_SLC_BIT ) && ( P_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; if ( i4_skip_b_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } if ( i4_skip_p_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } } { UWORD16 u2_mb_x , u2_mb_y ; ps_dec -> i4_submb_ofst = ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) * SUB_BLK_SIZE ) - SUB_BLK_SIZE ; if ( u2_first_mb_in_slice ) { UWORD8 u1_mb_aff ; UWORD8 u1_field_pic ; UWORD16 u2_frm_wd_in_mbs ; u2_frm_wd_in_mbs = ps_seq -> u2_frm_wd_in_mbs ; u1_mb_aff = ps_cur_slice -> u1_mbaff_frame_flag ; u1_field_pic = ps_cur_slice -> u1_field_pic_flag ; { UWORD32 x_offset ; UWORD32 y_offset ; UWORD32 u4_frame_stride ; tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = MOD ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y = DIV ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y <<= u1_mb_aff ; if ( ( u2_mb_x > u2_frm_wd_in_mbs - 1 ) || ( u2_mb_y > ps_dec -> u2_frm_ht_in_mbs - 1 ) ) { return ERROR_CORRUPTED_SLICE ; } u4_frame_stride = ps_dec -> u2_frm_wd_y << u1_field_pic ; x_offset = u2_mb_x << 4 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 4 ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 + x_offset + y_offset ; u4_frame_stride = ps_dec -> u2_frm_wd_uv << u1_field_pic ; x_offset >>= 1 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 3 ; x_offset *= YUV420SP_FACTOR ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 + x_offset + y_offset ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 + x_offset + y_offset ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; if ( ps_dec -> u1_separate_parse == 1 ) { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } else { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } ps_dec -> u2_cur_mb_addr = ( u2_first_mb_in_slice << u1_mb_aff ) ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv + ( ( u2_first_mb_in_slice << u1_mb_aff ) << 4 ) ; } } else { tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = 0xffff ; u2_mb_y = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; } ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= ps_cur_slice -> u1_mbaff_frame_flag ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; } ps_bitstrm -> u4_max_ofst += ps_dec -> ps_cur_pps -> u1_entropy_coding_mode ; ps_dec -> u1_B = ( u1_slice_type == B_SLICE ) ; ps_dec -> u4_next_mb_skip = 0 ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> ps_cur_slice -> u2_first_mb_in_slice ; ps_dec -> ps_parse_cur_slice -> slice_type = ps_dec -> ps_cur_slice -> u1_slice_type ; ps_dec -> u4_start_recon_deblk = 1 ; { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MAX_FRAMES ; if ( ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) && ( 0 == ps_dec -> i4_display_delay ) ) { num_entries = 1 ; } num_entries = ( ( 2 * num_entries ) + 1 ) ; num_entries *= 2 ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( void * ) pu1_buf ; } if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } if ( u1_slice_type == I_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= I_SLC_BIT ; ret = ih264d_parse_islice ( ps_dec , u2_first_mb_in_slice ) ; if ( ps_dec -> i4_pic_type != B_SLICE && ps_dec -> i4_pic_type != P_SLICE ) ps_dec -> i4_pic_type = I_SLICE ; } else if ( u1_slice_type == P_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ret = ih264d_parse_pslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; if ( ps_dec -> i4_pic_type != B_SLICE ) ps_dec -> i4_pic_type = P_SLICE ; } else if ( u1_slice_type == B_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ret = ih264d_parse_bslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; ps_dec -> i4_pic_type = B_SLICE ; } else return ERROR_INV_SLC_TYPE_T ; if ( ps_dec -> u1_slice_header_done ) { ps_dec -> u1_first_slice_in_stream = 0 ; } if ( ret != OK ) return ret ; <S2SV_StartBug> ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; <S2SV_EndBug> ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ( ps_seq -> u2_max_mb_addr + 1 ) ) { ps_dec -> u1_pic_decode_done = 1 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ( ps_err -> u1_err_flag & REJECT_PB_PICS ) && ( ps_err -> u1_cur_pic_type == PIC_TYPE_I ) ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } PRINT_BIN_BIT_RATIO ( ps_dec ) return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ret ; if ( u1_nal_ref_idc != 0 ) { if ( ! ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read ) { memcpy ( ( void * ) ps_dec -> ps_dpb_cmds , ( void * ) ( & ( ps_dec -> s_dpb_cmds_scratch ) ) , sizeof ( dpb_commands_t ) ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11411\n\n```\nCWE-119 static void Np_toString ( js_State * J ) { <S2SV_StartBug> char buf [ 32 ] ; <S2SV_EndBug> js_Object * self = js_toobject ( J , 0 ) ; int radix = js_isundefined ( J , 1 ) ? 10 : js_tointeger ( J , 1 ) ; if ( self -> type != JS_CNUMBER ) js_typeerror ( J , \"not<S2SV_blank>a<S2SV_blank>number\" ) ; if ( radix == 10 ) { js_pushstring ( J , jsV_numbertostring ( J , buf , self -> u . number ) ) ; return ; } if ( radix < 2 || radix > 36 ) js_rangeerror ( J , \"invalid<S2SV_blank>radix\" ) ; { static const char digits [ ] = \"0123456789abcdefghijklmnopqrstuvwxyz\" ; <S2SV_StartBug> char buf [ 100 ] ; <S2SV_EndBug> double number = self -> u . number ; int sign = self -> u . number < 0 ; js_Buffer * sb = NULL ; uint64_t u , limit = ( ( uint64_t ) 1 << 52 ) ; int ndigits , exp , point ; if ( number == 0 ) { js_pushstring ( J , \"0\" ) ; return ; } if ( isnan ( number ) ) { js_pushstring ( J , \"NaN\" ) ; return ; } if ( isinf ( number ) ) { js_pushstring ( J , sign ? \"-Infinity\" : \"Infinity\" ) ; return ; } if ( sign ) number = - number ; exp = 0 ; while ( number * pow ( radix , exp ) > limit ) -- exp ; while ( number * pow ( radix , exp + 1 ) < limit ) ++ exp ; u = number * pow ( radix , exp ) + 0.5 ; while ( u > 0 && ( u % radix ) == 0 ) { u /= radix ; -- exp ; } ndigits = 0 ; while ( u > 0 ) { buf [ ndigits ++ ] = digits [ u % radix ] ; u /= radix ; } point = ndigits - exp ; if ( js_try ( J ) ) { js_free ( J , sb ) ; js_throw ( J ) ; } if ( sign ) js_putc ( J , & sb , '-' ) ; if ( point <= 0 ) { js_putc ( J , & sb , '0' ) ; js_putc ( J , & sb , '.' ) ; while ( point ++ < 0 ) js_putc ( J , & sb , '0' ) ; while ( ndigits -- > 0 ) js_putc ( J , & sb , buf [ ndigits ] ) ; } else { while ( ndigits -- > 0 ) { js_putc ( J , & sb , buf [ ndigits ] ) ; if ( -- point == 0 && ndigits > 0 ) js_putc ( J , & sb , '.' ) ; } while ( point -- > 0 ) js_putc ( J , & sb , '0' ) ; } js_putc ( J , & sb , 0 ) ; js_pushstring ( J , sb -> s ) ; js_endtry ( J ) ; js_free ( J , sb ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ 100 <S2SV_ModEnd> ] ; js_Object <S2SV_ModStart> = \"0123456789abcdefghijklmnopqrstuvwxyz\" ; <S2SV_ModEnd> double number =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-8460\n\n```\nCWE-20 void tcp_sack_option ( struct tcpcb * tp , struct tcphdr * th , u_char * cp , int optlen ) { int tmp_olen ; u_char * tmp_cp ; struct sackhole * cur , * p , * temp ; if ( ! tp -> sack_enable ) return ; if ( ( th -> th_flags & TH_ACK ) == 0 ) return ; if ( SEQ_LT ( th -> th_ack , tp -> snd_una ) || SEQ_GT ( th -> th_ack , tp -> snd_max ) ) return ; if ( optlen <= 2 || ( optlen - 2 ) % TCPOLEN_SACK != 0 ) return ; tmp_cp = cp + 2 ; tmp_olen = optlen - 2 ; tcpstat_inc ( tcps_sack_rcv_opts ) ; if ( tp -> snd_numholes < 0 ) tp -> snd_numholes = 0 ; if ( tp -> t_maxseg == 0 ) panic ( \"tcp_sack_option\" ) ; while ( tmp_olen > 0 ) { struct sackblk sack ; memcpy ( & sack . start , tmp_cp , sizeof ( tcp_seq ) ) ; sack . start = ntohl ( sack . start ) ; memcpy ( & sack . end , tmp_cp + sizeof ( tcp_seq ) , sizeof ( tcp_seq ) ) ; sack . end = ntohl ( sack . end ) ; tmp_olen -= TCPOLEN_SACK ; tmp_cp += TCPOLEN_SACK ; if ( SEQ_LEQ ( sack . end , sack . start ) ) continue ; if ( SEQ_LEQ ( sack . end , tp -> snd_una ) ) continue ; if ( SEQ_GT ( th -> th_ack , tp -> snd_una ) ) { if ( SEQ_LT ( sack . start , th -> th_ack ) ) continue ; } if ( SEQ_GT ( sack . end , tp -> snd_max ) ) continue ; if ( tp -> snd_holes == NULL ) { tp -> snd_holes = ( struct sackhole * ) pool_get ( & sackhl_pool , PR_NOWAIT ) ; if ( tp -> snd_holes == NULL ) { goto done ; } cur = tp -> snd_holes ; cur -> start = th -> th_ack ; cur -> end = sack . start ; cur -> rxmit = cur -> start ; cur -> next = NULL ; tp -> snd_numholes = 1 ; tp -> rcv_lastsack = sack . end ; cur -> dups = min ( tcprexmtthresh , ( ( sack . end - cur -> end ) / tp -> t_maxseg ) ) ; if ( cur -> dups < 1 ) cur -> dups = 1 ; continue ; } p = cur = tp -> snd_holes ; while ( cur ) { if ( SEQ_LEQ ( sack . end , cur -> start ) ) break ; if ( SEQ_GEQ ( sack . start , cur -> end ) ) { cur -> dups ++ ; if ( ( ( sack . end - cur -> end ) / tp -> t_maxseg ) >= tcprexmtthresh ) cur -> dups = tcprexmtthresh ; p = cur ; cur = cur -> next ; continue ; } if ( SEQ_LEQ ( sack . start , cur -> start ) ) { if ( SEQ_GEQ ( sack . end , cur -> end ) ) { if ( p != cur ) { p -> next = cur -> next ; pool_put ( & sackhl_pool , cur ) ; cur = p -> next ; } else { cur = cur -> next ; pool_put ( & sackhl_pool , p ) ; p = cur ; tp -> snd_holes = p ; } tp -> snd_numholes -- ; continue ; } cur -> start = sack . end ; cur -> rxmit = SEQ_MAX ( cur -> rxmit , cur -> start ) ; p = cur ; cur = cur -> next ; continue ; } if ( SEQ_GEQ ( sack . end , cur -> end ) ) { cur -> end = sack . start ; cur -> rxmit = SEQ_MIN ( cur -> rxmit , cur -> end ) ; cur -> dups ++ ; if ( ( ( sack . end - cur -> end ) / tp -> t_maxseg ) >= tcprexmtthresh ) cur -> dups = tcprexmtthresh ; p = cur ; cur = cur -> next ; continue ; } if ( SEQ_LT ( cur -> start , sack . start ) && SEQ_GT ( cur -> end , sack . end ) ) { <S2SV_StartBug> temp = ( struct sackhole * ) <S2SV_EndBug> pool_get ( & sackhl_pool , PR_NOWAIT ) ; if ( temp == NULL ) goto done ; temp -> next = cur -> next ; temp -> start = sack . end ; temp -> end = cur -> end ; temp -> dups = cur -> dups ; temp -> rxmit = SEQ_MAX ( cur -> rxmit , temp -> start ) ; cur -> end = sack . start ; cur -> rxmit = SEQ_MIN ( cur -> rxmit , cur -> end ) ; cur -> dups ++ ; if ( ( ( sack . end - cur -> end ) / tp -> t_maxseg ) >= tcprexmtthresh ) cur -> dups = tcprexmtthresh ; cur -> next = temp ; p = temp ; cur = p -> next ; tp -> snd_numholes ++ ; } } if ( SEQ_LT ( tp -> rcv_lastsack , sack . start ) ) { <S2SV_StartBug> temp = ( struct sackhole * ) <S2SV_EndBug> pool_get ( & sackhl_pool , PR_NOWAIT ) ; if ( temp == NULL ) goto done ; temp -> start = tp -> rcv_lastsack ; temp -> end = sack . start ; temp -> dups = min ( tcprexmtthresh , ( ( sack . end - sack . start ) / tp -> t_maxseg ) ) ; if ( temp -> dups < 1 ) temp -> dups = 1 ; temp -> rxmit = temp -> start ; temp -> next = 0 ; p -> next = temp ; tp -> rcv_lastsack = sack . end ; tp -> snd_numholes ++ ; } } done : return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( tp -> snd_numholes >= TCP_SACKHOLE_LIMIT ) goto done ; <S2SV_ModStart> ) ) { if ( tp -> snd_numholes >= TCP_SACKHOLE_LIMIT ) goto done ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6059\n\n```\nCWE-20 int oidc_handle_redirect_uri_request ( request_rec * r , oidc_cfg * c , oidc_session_t * session ) { if ( oidc_proto_is_redirect_authorization_response ( r , c ) ) { return oidc_handle_redirect_authorization_response ( r , c , session ) ; } else if ( oidc_proto_is_post_authorization_response ( r , c ) ) { return oidc_handle_post_authorization_response ( r , c , session ) ; } else if ( oidc_is_discovery_response ( r , c ) ) { return oidc_handle_discovery_response ( r , c ) ; } else if ( oidc_util_request_has_parameter ( r , \"logout\" ) ) { return oidc_handle_logout ( r , c , session ) ; } else if ( oidc_util_request_has_parameter ( r , \"jwks\" ) ) { return oidc_handle_jwks ( r , c ) ; } else if ( oidc_util_request_has_parameter ( r , \"session\" ) ) { return oidc_handle_session_management ( r , c , session ) ; } else if ( oidc_util_request_has_parameter ( r , \"refresh\" ) ) { return oidc_handle_refresh_token_request ( r , c , session ) ; } else if ( oidc_util_request_has_parameter ( r , \"request_uri\" ) ) { return oidc_handle_request_uri ( r , c ) ; } else if ( oidc_util_request_has_parameter ( r , \"remove_at_cache\" ) ) { return oidc_handle_remove_at_cache ( r , c ) ; } else if ( ( r -> args == NULL ) || ( apr_strnatcmp ( r -> args , \"\" ) == 0 ) ) { return oidc_proto_javascript_implicit ( r , c ) ; } if ( oidc_util_request_has_parameter ( r , \"error\" ) ) { oidc_handle_redirect_authorization_response ( r , c , session ) ; } return oidc_util_html_send_error ( r , c -> error_template , \"Invalid<S2SV_blank>Request\" , apr_psprintf ( r -> pool , <S2SV_StartBug> \"The<S2SV_blank>OpenID<S2SV_blank>Connect<S2SV_blank>callback<S2SV_blank>URL<S2SV_blank>received<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>request:<S2SV_blank>%s\" , <S2SV_EndBug> r -> args ) , HTTP_INTERNAL_SERVER_ERROR ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pool , \"The<S2SV_blank>OpenID<S2SV_blank>Connect<S2SV_blank>callback<S2SV_blank>URL<S2SV_blank>received<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>request\" ) , <S2SV_ModEnd> HTTP_INTERNAL_SERVER_ERROR ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3572\n\n```\nCWE-310 int ssl3_get_key_exchange ( SSL * s ) { # ifndef OPENSSL_NO_RSA unsigned char * q , md_buf [ EVP_MAX_MD_SIZE * 2 ] ; # endif EVP_MD_CTX md_ctx ; unsigned char * param , * p ; int al , j , ok ; long i , param_len , n , alg_k , alg_a ; EVP_PKEY * pkey = NULL ; const EVP_MD * md = NULL ; # ifndef OPENSSL_NO_RSA RSA * rsa = NULL ; # endif # ifndef OPENSSL_NO_DH DH * dh = NULL ; # endif # ifndef OPENSSL_NO_ECDH EC_KEY * ecdh = NULL ; BN_CTX * bn_ctx = NULL ; EC_POINT * srvr_ecpoint = NULL ; int curve_nid = 0 ; int encoded_pt_len = 0 ; # endif <S2SV_StartBug> n = s -> method -> ssl_get_message ( s , <S2SV_EndBug> SSL3_ST_CR_KEY_EXCH_A , SSL3_ST_CR_KEY_EXCH_B , - 1 , s -> max_cert_list , & ok ) ; <S2SV_StartBug> if ( ! ok ) return ( ( int ) n ) ; <S2SV_EndBug> if ( s -> s3 -> tmp . message_type != SSL3_MT_SERVER_KEY_EXCHANGE ) { <S2SV_StartBug> # ifndef OPENSSL_NO_PSK <S2SV_EndBug> <S2SV_StartBug> if ( s -> s3 -> tmp . new_cipher -> algorithm_mkey & SSL_kPSK ) <S2SV_EndBug> { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; if ( s -> ctx -> psk_identity_hint ) OPENSSL_free ( s -> ctx -> psk_identity_hint ) ; s -> ctx -> psk_identity_hint = NULL ; } # endif s -> s3 -> tmp . reuse_message = 1 ; return ( 1 ) ; } param = p = ( unsigned char * ) s -> init_msg ; if ( s -> session -> sess_cert != NULL ) { # ifndef OPENSSL_NO_RSA if ( s -> session -> sess_cert -> peer_rsa_tmp != NULL ) { RSA_free ( s -> session -> sess_cert -> peer_rsa_tmp ) ; s -> session -> sess_cert -> peer_rsa_tmp = NULL ; } # endif # ifndef OPENSSL_NO_DH if ( s -> session -> sess_cert -> peer_dh_tmp ) { DH_free ( s -> session -> sess_cert -> peer_dh_tmp ) ; s -> session -> sess_cert -> peer_dh_tmp = NULL ; } # endif # ifndef OPENSSL_NO_ECDH if ( s -> session -> sess_cert -> peer_ecdh_tmp ) { EC_KEY_free ( s -> session -> sess_cert -> peer_ecdh_tmp ) ; s -> session -> sess_cert -> peer_ecdh_tmp = NULL ; } # endif } else { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; } param_len = 0 ; alg_k = s -> s3 -> tmp . new_cipher -> algorithm_mkey ; alg_a = s -> s3 -> tmp . new_cipher -> algorithm_auth ; EVP_MD_CTX_init ( & md_ctx ) ; al = SSL_AD_DECODE_ERROR ; # ifndef OPENSSL_NO_PSK if ( alg_k & SSL_kPSK ) { char tmp_id_hint [ PSK_MAX_IDENTITY_LEN + 1 ] ; param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > PSK_MAX_IDENTITY_LEN ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_DATA_LENGTH_TOO_LONG ) ; goto f_err ; } if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH ) ; goto f_err ; } param_len += i ; memcpy ( tmp_id_hint , p , i ) ; memset ( tmp_id_hint + i , 0 , PSK_MAX_IDENTITY_LEN + 1 - i ) ; if ( s -> ctx -> psk_identity_hint != NULL ) OPENSSL_free ( s -> ctx -> psk_identity_hint ) ; s -> ctx -> psk_identity_hint = BUF_strdup ( tmp_id_hint ) ; if ( s -> ctx -> psk_identity_hint == NULL ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto f_err ; } p += i ; n -= param_len ; } else # endif # ifndef OPENSSL_NO_SRP if ( alg_k & SSL_kSRP ) { param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_N_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . N = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_G_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . g = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 1 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 1 ; i = ( unsigned int ) ( p [ 0 ] ) ; p ++ ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_S_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . s = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_B_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . B = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( ! srp_verify_server_param ( s , & al ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_PARAMETERS ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DSA else if ( alg_a & SSL_aDSS ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_DSA_SIGN ] . x509 ) ; # endif } else # endif # ifndef OPENSSL_NO_RSA if ( alg_k & SSL_kRSA ) { if ( ( rsa = RSA_new ( ) ) == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_MODULUS_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( rsa -> n = BN_bin2bn ( p , i , rsa -> n ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_E_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( rsa -> e = BN_bin2bn ( p , i , rsa -> e ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; else { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_INTERNAL_ERROR ) ; goto err ; } s -> session -> sess_cert -> peer_rsa_tmp = rsa ; rsa = NULL ; } # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DH else if ( alg_k & SSL_kDHE ) { if ( ( dh = DH_new ( ) ) == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_DH_LIB ) ; goto err ; } param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_P_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> p = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_G_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> g = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_PUB_KEY_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> pub_key = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( ! ssl_security ( s , SSL_SECOP_TMP_DH , DH_security_bits ( dh ) , 0 , dh ) ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_DH_KEY_TOO_SMALL ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DSA else if ( alg_a & SSL_aDSS ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_DSA_SIGN ] . x509 ) ; # endif s -> session -> sess_cert -> peer_dh_tmp = dh ; dh = NULL ; } else if ( ( alg_k & SSL_kDHr ) || ( alg_k & SSL_kDHd ) ) { al = SSL_AD_ILLEGAL_PARAMETER ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER ) ; goto f_err ; } # endif # ifndef OPENSSL_NO_ECDH else if ( alg_k & SSL_kECDHE ) { EC_GROUP * ngroup ; const EC_GROUP * group ; if ( ( ecdh = EC_KEY_new ( ) ) == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } param_len = 4 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } if ( ! tls1_check_curve ( s , p , 3 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_WRONG_CURVE ) ; goto f_err ; } if ( ( curve_nid = tls1_ec_curve_id2nid ( * ( p + 2 ) ) ) == 0 ) { al = SSL_AD_INTERNAL_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS ) ; goto f_err ; } ngroup = EC_GROUP_new_by_curve_name ( curve_nid ) ; if ( ngroup == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_EC_LIB ) ; goto err ; } if ( EC_KEY_set_group ( ecdh , ngroup ) == 0 ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_EC_LIB ) ; goto err ; } EC_GROUP_free ( ngroup ) ; group = EC_KEY_get0_group ( ecdh ) ; if ( SSL_C_IS_EXPORT ( s -> s3 -> tmp . new_cipher ) && ( EC_GROUP_get_degree ( group ) > 163 ) ) { al = SSL_AD_EXPORT_RESTRICTION ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER ) ; goto f_err ; } p += 3 ; if ( ( ( srvr_ecpoint = EC_POINT_new ( group ) ) == NULL ) || ( ( bn_ctx = BN_CTX_new ( ) ) == NULL ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } encoded_pt_len = * p ; p += 1 ; if ( ( encoded_pt_len > n - param_len ) || ( EC_POINT_oct2point ( group , srvr_ecpoint , p , encoded_pt_len , bn_ctx ) == 0 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_ECPOINT ) ; goto f_err ; } param_len += encoded_pt_len ; n -= param_len ; p += encoded_pt_len ; if ( 0 ) ; # ifndef OPENSSL_NO_RSA else if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # endif # ifndef OPENSSL_NO_ECDSA else if ( alg_a & SSL_aECDSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_ECC ] . x509 ) ; # endif EC_KEY_set_public_key ( ecdh , srvr_ecpoint ) ; s -> session -> sess_cert -> peer_ecdh_tmp = ecdh ; ecdh = NULL ; BN_CTX_free ( bn_ctx ) ; bn_ctx = NULL ; EC_POINT_free ( srvr_ecpoint ) ; srvr_ecpoint = NULL ; } else if ( alg_k ) { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNEXPECTED_MESSAGE ) ; goto f_err ; } # endif if ( pkey != NULL ) { if ( SSL_USE_SIGALGS ( s ) ) { int rv ; if ( 2 > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } rv = tls12_check_peer_sigalg ( & md , s , p , pkey ) ; if ( rv == - 1 ) goto err ; else if ( rv == 0 ) { goto f_err ; } # ifdef SSL_DEBUG fprintf ( stderr , \"USING<S2SV_blank>TLSv1.2<S2SV_blank>HASH<S2SV_blank>%s\\\\n\" , EVP_MD_name ( md ) ) ; # endif p += 2 ; n -= 2 ; } else md = EVP_sha1 ( ) ; if ( 2 > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; n -= 2 ; j = EVP_PKEY_size ( pkey ) ; if ( ( i != n ) || ( n > j ) || ( n <= 0 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_WRONG_SIGNATURE_LENGTH ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( pkey -> type == EVP_PKEY_RSA && ! SSL_USE_SIGALGS ( s ) ) { int num ; unsigned int size ; j = 0 ; q = md_buf ; for ( num = 2 ; num > 0 ; num -- ) { EVP_MD_CTX_set_flags ( & md_ctx , EVP_MD_CTX_FLAG_NON_FIPS_ALLOW ) ; EVP_DigestInit_ex ( & md_ctx , ( num == 2 ) ? s -> ctx -> md5 : s -> ctx -> sha1 , NULL ) ; EVP_DigestUpdate ( & md_ctx , & ( s -> s3 -> client_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_DigestUpdate ( & md_ctx , & ( s -> s3 -> server_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_DigestUpdate ( & md_ctx , param , param_len ) ; EVP_DigestFinal_ex ( & md_ctx , q , & size ) ; q += size ; j += size ; } i = RSA_verify ( NID_md5_sha1 , md_buf , j , p , n , pkey -> pkey . rsa ) ; if ( i < 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_DECRYPT ) ; goto f_err ; } if ( i == 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SIGNATURE ) ; goto f_err ; } } else # endif { EVP_VerifyInit_ex ( & md_ctx , md , NULL ) ; EVP_VerifyUpdate ( & md_ctx , & ( s -> s3 -> client_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_VerifyUpdate ( & md_ctx , & ( s -> s3 -> server_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_VerifyUpdate ( & md_ctx , param , param_len ) ; if ( EVP_VerifyFinal ( & md_ctx , p , ( int ) n , pkey ) <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SIGNATURE ) ; goto f_err ; } } } else { if ( ! ( alg_a & ( SSL_aNULL | SSL_aSRP ) ) && ! ( alg_k & SSL_kPSK ) ) { if ( ssl3_check_cert_and_algorithm ( s ) ) SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_INTERNAL_ERROR ) ; goto err ; } if ( n != 0 ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_EXTRA_DATA_IN_MESSAGE ) ; goto f_err ; } } EVP_PKEY_free ( pkey ) ; EVP_MD_CTX_cleanup ( & md_ctx ) ; return ( 1 ) ; f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : EVP_PKEY_free ( pkey ) ; # ifndef OPENSSL_NO_RSA if ( rsa != NULL ) RSA_free ( rsa ) ; # endif # ifndef OPENSSL_NO_DH if ( dh != NULL ) DH_free ( dh ) ; # endif # ifndef OPENSSL_NO_ECDH BN_CTX_free ( bn_ctx ) ; EC_POINT_free ( srvr_ecpoint ) ; if ( ecdh != NULL ) EC_KEY_free ( ecdh ) ; # endif EVP_MD_CTX_cleanup ( & md_ctx ) ; return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif EVP_MD_CTX_init ( & md_ctx ) ; <S2SV_ModStart> ) n ) ; alg_k = s -> s3 -> tmp . new_cipher -> algorithm_mkey <S2SV_ModStart> SSL3_MT_SERVER_KEY_EXCHANGE ) { if ( alg_k & ( SSL_kDHE | SSL_kECDHE ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNEXPECTED_MESSAGE ) ; al = SSL_AD_UNEXPECTED_MESSAGE ; goto f_err ; } <S2SV_ModStart> OPENSSL_NO_PSK if ( alg_k & SSL_kPSK ) { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; if ( s -> ctx -> psk_identity_hint ) OPENSSL_free ( s -> ctx -> psk_identity_hint ) ; s -> ctx -> psk_identity_hint = NULL ; } # endif s -> s3 -> tmp . reuse_message = 1 ; return ( 1 ) ; } param = p = ( unsigned char * ) s -> init_msg ; if ( s -> session -> sess_cert != NULL ) { # ifndef OPENSSL_NO_RSA if ( s -> session -> sess_cert -> peer_rsa_tmp != NULL ) { RSA_free ( s -> session -> sess_cert -> peer_rsa_tmp ) ; s -> session -> sess_cert -> peer_rsa_tmp = NULL ; } # endif # ifndef OPENSSL_NO_DH if ( s -> session -> sess_cert -> peer_dh_tmp ) { DH_free ( s -> session -> sess_cert -> peer_dh_tmp ) ; s -> session -> sess_cert -> peer_dh_tmp = NULL ; } # endif # ifndef OPENSSL_NO_ECDH if ( s -> session -> sess_cert -> peer_ecdh_tmp ) { EC_KEY_free ( s -> session -> sess_cert -> peer_ecdh_tmp ) ; s -> session -> sess_cert -> peer_ecdh_tmp = NULL ; } # endif } else { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; } param_len = 0 ; alg_a = <S2SV_ModStart> . new_cipher -> algorithm_auth <S2SV_ModEnd> ; al =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12973\n\n```\nCWE-834 static OPJ_BOOL bmp_read_rle8_data ( FILE * IN , OPJ_UINT8 * pData , OPJ_UINT32 stride , OPJ_UINT32 width , OPJ_UINT32 height ) { <S2SV_StartBug> OPJ_UINT32 x , y ; <S2SV_EndBug> OPJ_UINT8 * pix ; const OPJ_UINT8 * beyond ; beyond = pData + stride * height ; pix = pData ; <S2SV_StartBug> x = y = 0U ; <S2SV_EndBug> while ( y < height ) { int c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } if ( c ) { int j , c1_int ; OPJ_UINT8 c1 ; c1_int = getc ( IN ) ; if ( c1_int == EOF ) { return OPJ_FALSE ; } c1 = ( OPJ_UINT8 ) c1_int ; for ( j = 0 ; ( j < c ) && ( x < width ) && ( ( OPJ_SIZE_T ) pix < ( OPJ_SIZE_T ) beyond ) ; j ++ , x ++ , pix ++ ) { <S2SV_StartBug> * pix = c1 ; <S2SV_EndBug> } } else { c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } if ( c == 0x00 ) { x = 0 ; ++ y ; pix = pData + y * stride + x ; } else if ( c == 0x01 ) { break ; } else if ( c == 0x02 ) { c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } x += ( OPJ_UINT32 ) c ; c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } y += ( OPJ_UINT32 ) c ; pix = pData + y * stride + x ; } else { int j ; for ( j = 0 ; ( j < c ) && ( x < width ) && ( ( OPJ_SIZE_T ) pix < ( OPJ_SIZE_T ) beyond ) ; j ++ , x ++ , pix ++ ) { int c1_int ; OPJ_UINT8 c1 ; c1_int = getc ( IN ) ; if ( c1_int == EOF ) { return OPJ_FALSE ; } c1 = ( OPJ_UINT8 ) c1_int ; * pix = c1 ; <S2SV_StartBug> } <S2SV_EndBug> if ( ( OPJ_UINT32 ) c & 1U ) { c = getc ( IN ) ; if ( c == EOF ) { return OPJ_FALSE ; } } } } } <S2SV_StartBug> return OPJ_TRUE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x , y , written <S2SV_ModStart> = y = written = <S2SV_ModStart> pix = c1 ; written ++ <S2SV_ModStart> = c1 ; written ++ ; <S2SV_ModStart> } } } if ( written != width * height ) { fprintf ( stderr , \"warning,<S2SV_blank>image\\'s<S2SV_blank>actual<S2SV_blank>size<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>advertized<S2SV_blank>one\\\\n\" ) ; return OPJ_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 static bool parse_cmdline ( int argc , char * * argv ) { int c ; bool reopen_log = false ; int signum ; struct utsname uname_buf ; int longindex ; int curind ; bool bad_option = false ; unsigned facility ; mode_t new_umask_val ; struct option long_options [ ] = { { \"use-file\" , required_argument , NULL , 'f' } , # if defined _WITH_VRRP_ && defined _WITH_LVS_ { \"vrrp\" , no_argument , NULL , 'P' } , { \"check\" , no_argument , NULL , 'C' } , # endif # ifdef _WITH_BFD_ { \"no_bfd\" , no_argument , NULL , 'B' } , # endif { \"all\" , no_argument , NULL , 3 } , { \"log-console\" , no_argument , NULL , 'l' } , { \"log-detail\" , no_argument , NULL , 'D' } , { \"log-facility\" , required_argument , NULL , 'S' } , { \"log-file\" , optional_argument , NULL , 'g' } , { \"flush-log-file\" , no_argument , NULL , 2 } , { \"no-syslog\" , no_argument , NULL , 'G' } , { \"umask\" , required_argument , NULL , 'u' } , # ifdef _WITH_VRRP_ { \"release-vips\" , no_argument , NULL , 'X' } , { \"dont-release-vrrp\" , no_argument , NULL , 'V' } , # endif # ifdef _WITH_LVS_ { \"dont-release-ipvs\" , no_argument , NULL , 'I' } , # endif { \"dont-respawn\" , no_argument , NULL , 'R' } , { \"dont-fork\" , no_argument , NULL , 'n' } , { \"dump-conf\" , no_argument , NULL , 'd' } , { \"pid\" , required_argument , NULL , 'p' } , # ifdef _WITH_VRRP_ { \"vrrp_pid\" , required_argument , NULL , 'r' } , # endif # ifdef _WITH_LVS_ { \"checkers_pid\" , required_argument , NULL , 'c' } , { \"address-monitoring\" , no_argument , NULL , 'a' } , # endif # ifdef _WITH_BFD_ { \"bfd_pid\" , required_argument , NULL , 'b' } , # endif # ifdef _WITH_SNMP_ { \"snmp\" , no_argument , NULL , 'x' } , { \"snmp-agent-socket\" , required_argument , NULL , 'A' } , # endif { \"core-dump\" , no_argument , NULL , 'm' } , { \"core-dump-pattern\" , optional_argument , NULL , 'M' } , # ifdef _MEM_CHECK_LOG_ { \"mem-check-log\" , no_argument , NULL , 'L' } , # endif # if HAVE_DECL_CLONE_NEWNET { \"namespace\" , required_argument , NULL , 's' } , # endif { \"config-id\" , required_argument , NULL , 'i' } , { \"signum\" , required_argument , NULL , 4 } , { \"config-test\" , optional_argument , NULL , 't' } , # ifdef _WITH_PERF_ { \"perf\" , optional_argument , NULL , 5 } , # endif # ifdef WITH_DEBUG_OPTIONS { \"debug\" , optional_argument , NULL , 6 } , # endif { \"version\" , no_argument , NULL , 'v' } , { \"help\" , no_argument , NULL , 'h' } , { NULL , 0 , NULL , 0 } } ; curind = optind ; while ( longindex = - 1 , ( c = getopt_long ( argc , argv , \":vhlndu:DRS:f:p:i:mM::g::Gt::\" # if defined _WITH_VRRP_ && defined _WITH_LVS_ \"PC\" # endif # ifdef _WITH_VRRP_ \"r:VX\" # endif # ifdef _WITH_LVS_ \"ac:I\" # endif # ifdef _WITH_BFD_ \"Bb:\" # endif # ifdef _WITH_SNMP_ \"xA:\" # endif # ifdef _MEM_CHECK_LOG_ \"L\" # endif # if HAVE_DECL_CLONE_NEWNET \"s:\" # endif , long_options , & longindex ) ) != - 1 ) { if ( longindex >= 0 && long_options [ longindex ] . has_arg == required_argument && optarg && ! optarg [ 0 ] ) { c = ':' ; optarg = NULL ; } switch ( c ) { case 'v' : fprintf ( stderr , \"%s\" , version_string ) ; # ifdef GIT_COMMIT fprintf ( stderr , \",<S2SV_blank>git<S2SV_blank>commit<S2SV_blank>%s\" , GIT_COMMIT ) ; # endif fprintf ( stderr , \"\\\\n\\\\n%s\\\\n\\\\n\" , COPYRIGHT_STRING ) ; fprintf ( stderr , \"Built<S2SV_blank>with<S2SV_blank>kernel<S2SV_blank>headers<S2SV_blank>for<S2SV_blank>Linux<S2SV_blank>%d.%d.%d\\\\n\" , ( LINUX_VERSION_CODE >> 16 ) & 0xff , ( LINUX_VERSION_CODE >> 8 ) & 0xff , ( LINUX_VERSION_CODE ) & 0xff ) ; uname ( & uname_buf ) ; fprintf ( stderr , \"Running<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\\\\n\" , uname_buf . sysname , uname_buf . release , uname_buf . version ) ; fprintf ( stderr , \"configure<S2SV_blank>options:<S2SV_blank>%s\\\\n\\\\n\" , KEEPALIVED_CONFIGURE_OPTIONS ) ; fprintf ( stderr , \"Config<S2SV_blank>options:<S2SV_blank>%s\\\\n\\\\n\" , CONFIGURATION_OPTIONS ) ; fprintf ( stderr , \"System<S2SV_blank>options:<S2SV_blank>%s\\\\n\" , SYSTEM_OPTIONS ) ; exit ( 0 ) ; break ; case 'h' : usage ( argv [ 0 ] ) ; exit ( 0 ) ; break ; case 'l' : __set_bit ( LOG_CONSOLE_BIT , & debug ) ; reopen_log = true ; break ; case 'n' : __set_bit ( DONT_FORK_BIT , & debug ) ; break ; case 'd' : __set_bit ( DUMP_CONF_BIT , & debug ) ; break ; # ifdef _WITH_VRRP_ case 'V' : __set_bit ( DONT_RELEASE_VRRP_BIT , & debug ) ; break ; # endif # ifdef _WITH_LVS_ case 'I' : __set_bit ( DONT_RELEASE_IPVS_BIT , & debug ) ; break ; # endif case 'D' : if ( __test_bit ( LOG_DETAIL_BIT , & debug ) ) __set_bit ( LOG_EXTRA_DETAIL_BIT , & debug ) ; else __set_bit ( LOG_DETAIL_BIT , & debug ) ; break ; case 'R' : __set_bit ( DONT_RESPAWN_BIT , & debug ) ; break ; # ifdef _WITH_VRRP_ case 'X' : __set_bit ( RELEASE_VIPS_BIT , & debug ) ; break ; # endif case 'S' : if ( ! read_unsigned ( optarg , & facility , 0 , LOG_FACILITY_MAX , false ) ) fprintf ( stderr , \"Invalid<S2SV_blank>log<S2SV_blank>facility<S2SV_blank>\\'%s\\'\\\\n\" , optarg ) ; else { log_facility = LOG_FACILITY [ facility ] . facility ; reopen_log = true ; } break ; case 'g' : if ( optarg && optarg [ 0 ] ) log_file_name = optarg ; else log_file_name = \"/tmp/keepalived.log\" ; open_log_file ( log_file_name , NULL , NULL , NULL ) ; break ; case 'G' : __set_bit ( NO_SYSLOG_BIT , & debug ) ; reopen_log = true ; break ; case 'u' : new_umask_val = set_umask ( optarg ) ; if ( umask_cmdline ) umask_val = new_umask_val ; break ; case 't' : __set_bit ( CONFIG_TEST_BIT , & debug ) ; __set_bit ( DONT_RESPAWN_BIT , & debug ) ; __set_bit ( DONT_FORK_BIT , & debug ) ; __set_bit ( NO_SYSLOG_BIT , & debug ) ; if ( optarg && optarg [ 0 ] ) { <S2SV_StartBug> int fd = open ( optarg , O_WRONLY | O_APPEND | O_CREAT , S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ) ; <S2SV_EndBug> if ( fd == - 1 ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>config-test<S2SV_blank>log<S2SV_blank>file<S2SV_blank>%s\\\\n\" , optarg ) ; exit ( EXIT_FAILURE ) ; } dup2 ( fd , STDERR_FILENO ) ; close ( fd ) ; } break ; case 'f' : conf_file = optarg ; break ; case 2 : set_flush_log_file ( ) ; break ; # if defined _WITH_VRRP_ && defined _WITH_LVS_ case 'P' : __clear_bit ( DAEMON_CHECKERS , & daemon_mode ) ; break ; case 'C' : __clear_bit ( DAEMON_VRRP , & daemon_mode ) ; break ; # endif # ifdef _WITH_BFD_ case 'B' : __clear_bit ( DAEMON_BFD , & daemon_mode ) ; break ; # endif case 'p' : main_pidfile = optarg ; break ; # ifdef _WITH_LVS_ case 'c' : checkers_pidfile = optarg ; break ; case 'a' : __set_bit ( LOG_ADDRESS_CHANGES , & debug ) ; break ; # endif # ifdef _WITH_VRRP_ case 'r' : vrrp_pidfile = optarg ; break ; # endif # ifdef _WITH_BFD_ case 'b' : bfd_pidfile = optarg ; break ; # endif # ifdef _WITH_SNMP_ case 'x' : snmp = 1 ; break ; case 'A' : snmp_socket = optarg ; break ; # endif case 'M' : set_core_dump_pattern = true ; if ( optarg && optarg [ 0 ] ) core_dump_pattern = optarg ; case 'm' : create_core_dump = true ; break ; # ifdef _MEM_CHECK_LOG_ case 'L' : __set_bit ( MEM_CHECK_LOG_BIT , & debug ) ; break ; # endif # if HAVE_DECL_CLONE_NEWNET case 's' : override_namespace = MALLOC ( strlen ( optarg ) + 1 ) ; strcpy ( override_namespace , optarg ) ; break ; # endif case 'i' : FREE_PTR ( config_id ) ; config_id = MALLOC ( strlen ( optarg ) + 1 ) ; strcpy ( config_id , optarg ) ; break ; case 4 : signum = get_signum ( optarg ) ; if ( signum == - 1 ) { fprintf ( stderr , \"Unknown<S2SV_blank>sigfunc<S2SV_blank>%s\\\\n\" , optarg ) ; exit ( 1 ) ; } printf ( \"%d\\\\n\" , signum ) ; exit ( 0 ) ; break ; case 3 : __set_bit ( RUN_ALL_CHILDREN , & daemon_mode ) ; # ifdef _WITH_VRRP_ __set_bit ( DAEMON_VRRP , & daemon_mode ) ; # endif # ifdef _WITH_LVS_ __set_bit ( DAEMON_CHECKERS , & daemon_mode ) ; # endif # ifdef _WITH_BFD_ __set_bit ( DAEMON_BFD , & daemon_mode ) ; # endif break ; # ifdef _WITH_PERF_ case 5 : if ( optarg && optarg [ 0 ] ) { if ( ! strcmp ( optarg , \"run\" ) ) perf_run = PERF_RUN ; else if ( ! strcmp ( optarg , \"all\" ) ) perf_run = PERF_ALL ; else if ( ! strcmp ( optarg , \"end\" ) ) perf_run = PERF_END ; else log_message ( LOG_INFO , \"Unknown<S2SV_blank>perf<S2SV_blank>start<S2SV_blank>point<S2SV_blank>%s\" , optarg ) ; } else perf_run = PERF_RUN ; break ; # endif # ifdef WITH_DEBUG_OPTIONS case 6 : set_debug_options ( optarg && optarg [ 0 ] ? optarg : NULL ) ; break ; # endif case '?' : if ( optopt && argv [ curind ] [ 1 ] != '-' ) fprintf ( stderr , \"Unknown<S2SV_blank>option<S2SV_blank>-%c\\\\n\" , optopt ) ; else fprintf ( stderr , \"Unknown<S2SV_blank>option<S2SV_blank>%s\\\\n\" , argv [ curind ] ) ; bad_option = true ; break ; case ':' : if ( optopt && argv [ curind ] [ 1 ] != '-' ) fprintf ( stderr , \"Missing<S2SV_blank>parameter<S2SV_blank>for<S2SV_blank>option<S2SV_blank>-%c\\\\n\" , optopt ) ; else fprintf ( stderr , \"Missing<S2SV_blank>parameter<S2SV_blank>for<S2SV_blank>option<S2SV_blank>--%s\\\\n\" , long_options [ longindex ] . name ) ; bad_option = true ; break ; default : exit ( 1 ) ; break ; } curind = optind ; } if ( optind < argc ) { printf ( \"Unexpected<S2SV_blank>argument(s):<S2SV_blank>\" ) ; while ( optind < argc ) printf ( \"%s<S2SV_blank>\" , argv [ optind ++ ] ) ; printf ( \"\\\\n\" ) ; } if ( bad_option ) exit ( 1 ) ; return reopen_log ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> O_APPEND | O_CREAT | O_NOFOLLOW\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void <S2SV_StartBug> l2tp_proto_ver_print ( netdissect_options * ndo , const uint16_t * dat ) <S2SV_EndBug> { ND_PRINT ( ( ndo , \"%u.%u\" , ( EXTRACT_16BITS ( dat ) >> 8 ) , ( EXTRACT_16BITS ( dat ) & 0xff ) ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint16_t * dat , u_int length ) { if ( length < 2 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; } <S2SV_ModEnd> ND_PRINT ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 int kvm_set_msr_common ( struct kvm_vcpu * vcpu , struct msr_data * msr_info ) { bool pr = false ; u32 msr = msr_info -> index ; u64 data = msr_info -> data ; switch ( msr ) { case MSR_AMD64_NB_CFG : case MSR_IA32_UCODE_REV : case MSR_IA32_UCODE_WRITE : case MSR_VM_HSAVE_PA : case MSR_AMD64_PATCH_LOADER : case MSR_AMD64_BU_CFG2 : break ; case MSR_EFER : return set_efer ( vcpu , data ) ; case MSR_K7_HWCR : data &= ~ ( u64 ) 0x40 ; data &= ~ ( u64 ) 0x100 ; data &= ~ ( u64 ) 0x8 ; if ( data != 0 ) { vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>HWCR<S2SV_blank>wrmsr:<S2SV_blank>0x%llx\\\\n\" , data ) ; return 1 ; } break ; case MSR_FAM10H_MMIO_CONF_BASE : if ( data != 0 ) { vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>MMIO_CONF_BASE<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%llx\\\\n\" , data ) ; return 1 ; } break ; case MSR_IA32_DEBUGCTLMSR : if ( ! data ) { break ; } else if ( data & ~ ( DEBUGCTLMSR_LBR | DEBUGCTLMSR_BTF ) ) { return 1 ; } vcpu_unimpl ( vcpu , \"%s:<S2SV_blank>MSR_IA32_DEBUGCTLMSR<S2SV_blank>0x%llx,<S2SV_blank>nop\\\\n\" , __func__ , data ) ; break ; case 0x200 ... 0x2ff : return set_msr_mtrr ( vcpu , msr , data ) ; case MSR_IA32_APICBASE : kvm_set_apic_base ( vcpu , data ) ; break ; case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff : return kvm_x2apic_msr_write ( vcpu , msr , data ) ; case MSR_IA32_TSCDEADLINE : kvm_set_lapic_tscdeadline_msr ( vcpu , data ) ; break ; case MSR_IA32_TSC_ADJUST : if ( guest_cpuid_has_tsc_adjust ( vcpu ) ) { if ( ! msr_info -> host_initiated ) { u64 adj = data - vcpu -> arch . ia32_tsc_adjust_msr ; kvm_x86_ops -> adjust_tsc_offset ( vcpu , adj , true ) ; } vcpu -> arch . ia32_tsc_adjust_msr = data ; } break ; case MSR_IA32_MISC_ENABLE : vcpu -> arch . ia32_misc_enable_msr = data ; break ; case MSR_KVM_WALL_CLOCK_NEW : case MSR_KVM_WALL_CLOCK : vcpu -> kvm -> arch . wall_clock = data ; kvm_write_wall_clock ( vcpu -> kvm , data ) ; break ; case MSR_KVM_SYSTEM_TIME_NEW : case MSR_KVM_SYSTEM_TIME : { <S2SV_StartBug> kvmclock_reset ( vcpu ) ; <S2SV_EndBug> vcpu -> arch . time = data ; kvm_make_request ( KVM_REQ_CLOCK_UPDATE , vcpu ) ; if ( ! ( data & 1 ) ) break ; <S2SV_StartBug> vcpu -> arch . time_offset = data & ~ ( PAGE_MASK | 1 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( vcpu -> arch . time_offset & <S2SV_EndBug> ( sizeof ( struct pvclock_vcpu_time_info ) - 1 ) ) break ; <S2SV_StartBug> vcpu -> arch . time_page = <S2SV_EndBug> <S2SV_StartBug> gfn_to_page ( vcpu -> kvm , data >> PAGE_SHIFT ) ; <S2SV_EndBug> if ( is_error_page ( vcpu -> arch . time_page ) ) vcpu -> arch . time_page = NULL ; break ; } case MSR_KVM_ASYNC_PF_EN : if ( kvm_pv_enable_async_pf ( vcpu , data ) ) return 1 ; break ; case MSR_KVM_STEAL_TIME : if ( unlikely ( ! sched_info_on ( ) ) ) return 1 ; if ( data & KVM_STEAL_RESERVED_MASK ) return 1 ; if ( kvm_gfn_to_hva_cache_init ( vcpu -> kvm , & vcpu -> arch . st . stime , data & KVM_STEAL_VALID_BITS ) ) return 1 ; vcpu -> arch . st . msr_val = data ; if ( ! ( data & KVM_MSR_ENABLED ) ) break ; vcpu -> arch . st . last_steal = current -> sched_info . run_delay ; preempt_disable ( ) ; accumulate_steal_time ( vcpu ) ; preempt_enable ( ) ; kvm_make_request ( KVM_REQ_STEAL_UPDATE , vcpu ) ; break ; case MSR_KVM_PV_EOI_EN : if ( kvm_lapic_enable_pv_eoi ( vcpu , data ) ) return 1 ; break ; case MSR_IA32_MCG_CTL : case MSR_IA32_MCG_STATUS : case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1 : return set_msr_mce ( vcpu , msr , data ) ; case MSR_K7_EVNTSEL0 : case MSR_K7_EVNTSEL1 : case MSR_K7_EVNTSEL2 : case MSR_K7_EVNTSEL3 : if ( data != 0 ) vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_K7_PERFCTR0 : case MSR_K7_PERFCTR1 : case MSR_K7_PERFCTR2 : case MSR_K7_PERFCTR3 : vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_P6_PERFCTR0 : case MSR_P6_PERFCTR1 : pr = true ; case MSR_P6_EVNTSEL0 : case MSR_P6_EVNTSEL1 : if ( kvm_pmu_msr ( vcpu , msr ) ) return kvm_pmu_set_msr ( vcpu , msr , data ) ; if ( pr || data != 0 ) vcpu_unimpl ( vcpu , \"disabled<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_K7_CLK_CTL : break ; case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15 : if ( kvm_hv_msr_partition_wide ( msr ) ) { int r ; mutex_lock ( & vcpu -> kvm -> lock ) ; r = set_msr_hyperv_pw ( vcpu , msr , data ) ; mutex_unlock ( & vcpu -> kvm -> lock ) ; return r ; } else return set_msr_hyperv ( vcpu , msr , data ) ; break ; case MSR_IA32_BBL_CR_CTL3 : vcpu_unimpl ( vcpu , \"ignored<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; break ; case MSR_AMD64_OSVW_ID_LENGTH : if ( ! guest_cpuid_has_osvw ( vcpu ) ) return 1 ; vcpu -> arch . osvw . length = data ; break ; case MSR_AMD64_OSVW_STATUS : if ( ! guest_cpuid_has_osvw ( vcpu ) ) return 1 ; vcpu -> arch . osvw . status = data ; break ; default : if ( msr && ( msr == vcpu -> kvm -> arch . xen_hvm_config . msr ) ) return xen_hvm_config ( vcpu , data ) ; if ( kvm_pmu_msr ( vcpu , msr ) ) return kvm_pmu_set_msr ( vcpu , msr , data ) ; if ( ! ignore_msrs ) { vcpu_unimpl ( vcpu , \"unhandled<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; return 1 ; } else { vcpu_unimpl ( vcpu , \"ignored<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MSR_KVM_SYSTEM_TIME : { u64 gpa_offset ; <S2SV_ModStart> ) break ; gpa_offset <S2SV_ModEnd> = data & <S2SV_ModStart> ; if ( gpa_offset <S2SV_ModEnd> & ( sizeof <S2SV_ModStart> ) break ; if ( kvm_gfn_to_hva_cache_init <S2SV_ModEnd> ( vcpu -> <S2SV_ModStart> -> kvm , & vcpu -> arch . pv_time , data & ~ 1ULL ) ) vcpu -> arch . pv_time_enabled = false ; else vcpu -> arch . pv_time_enabled = true <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * lg_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { struct lg_drv_data * drv_data = hid_get_drvdata ( hdev ) ; struct usb_device_descriptor * udesc ; __u16 bcdDevice , rev_maj , rev_min ; <S2SV_StartBug> if ( ( drv_data -> quirks & LG_RDESC ) && * rsize >= 90 && rdesc [ 83 ] == 0x26 && <S2SV_EndBug> rdesc [ 84 ] == 0x8c && rdesc [ 85 ] == 0x02 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>keyboard<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 84 ] = rdesc [ 89 ] = 0x4d ; rdesc [ 85 ] = rdesc [ 90 ] = 0x10 ; } <S2SV_StartBug> if ( ( drv_data -> quirks & LG_RDESC_REL_ABS ) && * rsize >= 50 && <S2SV_EndBug> rdesc [ 32 ] == 0x81 && rdesc [ 33 ] == 0x06 && rdesc [ 49 ] == 0x81 && rdesc [ 50 ] == 0x06 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>rel/abs<S2SV_blank>in<S2SV_blank>Logitech<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 33 ] = rdesc [ 50 ] = 0x02 ; } switch ( hdev -> product ) { case USB_DEVICE_ID_LOGITECH_WHEEL : udesc = & ( hid_to_usb_dev ( hdev ) -> descriptor ) ; if ( ! udesc ) { hid_err ( hdev , \"NULL<S2SV_blank>USB<S2SV_blank>device<S2SV_blank>descriptor\\\\n\" ) ; break ; } bcdDevice = le16_to_cpu ( udesc -> bcdDevice ) ; rev_maj = bcdDevice >> 8 ; rev_min = bcdDevice & 0xff ; if ( rev_maj == 1 && rev_min == 2 && * rsize == DF_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Driving<S2SV_blank>Force<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = df_rdesc_fixed ; * rsize = sizeof ( df_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL : if ( * rsize == MOMO_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Momo<S2SV_blank>Force<S2SV_blank>(Red)<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = momo_rdesc_fixed ; * rsize = sizeof ( momo_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2 : if ( * rsize == MOMO2_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Momo<S2SV_blank>Racing<S2SV_blank>Force<S2SV_blank>(Black)<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = momo2_rdesc_fixed ; * rsize = sizeof ( momo2_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL : if ( * rsize == FV_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Formula<S2SV_blank>Vibration<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = fv_rdesc_fixed ; * rsize = sizeof ( fv_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_DFP_WHEEL : if ( * rsize == DFP_RDESC_ORIG_SIZE ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Driving<S2SV_blank>Force<S2SV_blank>Pro<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc = dfp_rdesc_fixed ; * rsize = sizeof ( dfp_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_LOGITECH_WII_WHEEL : if ( * rsize >= 101 && rdesc [ 41 ] == 0x95 && rdesc [ 42 ] == 0x0B && rdesc [ 47 ] == 0x05 && rdesc [ 48 ] == 0x09 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Logitech<S2SV_blank>Speed<S2SV_blank>Force<S2SV_blank>Wireless<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 41 ] = 0x05 ; rdesc [ 42 ] = 0x09 ; rdesc [ 47 ] = 0x95 ; rdesc [ 48 ] = 0x0B ; } break ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 91 <S2SV_ModEnd> && rdesc [ <S2SV_ModStart> * rsize >= 51 <S2SV_ModEnd> && rdesc [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3760\n\n```\nCWE-20 <S2SV_StartBug> static int enable ( void ) { <S2SV_EndBug> <S2SV_StartBug> LOG_INFO ( \"%s\" , __func__ ) ; <S2SV_EndBug> if ( ! interface_ready ( ) ) return BT_STATUS_NOT_READY ; stack_manager_get_interface ( ) -> start_up_stack_async ( ) ; return BT_STATUS_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int enable ( bool start_restricted <S2SV_ModEnd> ) { LOG_INFO <S2SV_ModStart> { LOG_INFO ( LOG_TAG , \"%s:<S2SV_blank>start<S2SV_blank>restricted<S2SV_blank>=<S2SV_blank>%d\" , __func__ , start_restricted ) ; restricted_mode = start_restricted <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _consolefs_writev ( oe_fd_t * desc , const struct oe_iovec * iov , int iovcnt ) { ssize_t ret = - 1 ; file_t * file = _cast_file ( desc ) ; void * buf = NULL ; size_t buf_size = 0 ; <S2SV_StartBug> if ( ! file || ( ! iov && iovcnt ) || iovcnt < 0 || iovcnt > OE_IOV_MAX ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( oe_iov_pack ( iov , iovcnt , & buf , & buf_size ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> OE_RAISE_ERRNO ( OE_ENOMEM ) ; <S2SV_EndBug> if ( oe_syscall_writev_ocall ( & ret , file -> host_fd , buf , iovcnt , buf_size ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> done : <S2SV_EndBug> if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; size_t data_size = 0 ; <S2SV_ModStart> , & buf_size , & data_size <S2SV_ModStart> OE_RAISE_ERRNO ( OE_ENOMEM ) ; if ( data_size > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL <S2SV_ModStart> ) ; } if ( ret > ( ssize_t ) data_size ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11590\n\n```\nCWE-190 size_t jsuGetFreeStack ( ) { # ifdef ARM void * frame = __builtin_frame_address ( 0 ) ; size_t stackPos = ( size_t ) ( ( char * ) frame ) ; size_t stackEnd = ( size_t ) ( ( char * ) & LINKER_END_VAR ) ; if ( stackPos < stackEnd ) return 0 ; return stackPos - stackEnd ; # elif defined ( LINUX ) char ptr ; extern void * STACK_BASE ; uint32_t count = ( uint32_t ) ( ( size_t ) STACK_BASE - ( size_t ) & ptr ) ; <S2SV_StartBug> return 1000000 - count ; <S2SV_EndBug> # else return 1000000 ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptr ) ; const uint32_t max_stack = 1000000 ; if ( count > max_stack ) return 0 ; return max_stack <S2SV_ModEnd> - count ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void CleanupOutput ( char * str ) { char * s , * t ; int period = 0 ; s = t = str ; <S2SV_StartBug> while ( * s && * s != '}' ) { <S2SV_EndBug> <S2SV_StartBug> if ( * s == '\\\\n' ) * s = '<S2SV_blank>' ; <S2SV_EndBug> <S2SV_StartBug> if ( ( * s == '<S2SV_blank>' || * s == '\\\\n' ) && ( s [ 1 ] == '<S2SV_blank>' || s [ 1 ] == '\\\\n' ) ) s ++ ; <S2SV_EndBug> else * t ++ = * s ++ ; } while ( * s ) * t ++ = * s ++ ; * t = 0 ; s = t = str ; while ( * s ) { if ( * s == '.' ) { period = 1 ; * t ++ = * s ++ ; } else if ( * s == '-' && s [ 1 ] == '0' && s [ 2 ] == '<S2SV_blank>' ) { s ++ ; } else if ( * s <= '9' && * s >= '0' ) { * t ++ = * s ++ ; } else if ( * s == '\\\\n' && ( t > str && t [ - 1 ] == '\\\\n' ) ) { s ++ ; } else if ( period ) { while ( t > str && t [ - 1 ] == '0' ) t -- ; if ( t > str && t [ - 1 ] == '.' ) t -- ; while ( * s == '<S2SV_blank>' && s [ 1 ] == '<S2SV_blank>' ) s ++ ; period = 0 ; * t ++ = * s ++ ; } else if ( * s == '<S2SV_blank>' && s [ 1 ] == '<S2SV_blank>' ) s ++ ; else { period = 0 ; * t ++ = * s ++ ; } } * t = 0 ; s = t = str ; while ( * s ) { if ( * s == '-' && s [ 1 ] == '0' && s [ 2 ] == '<S2SV_blank>' ) { s ++ ; } else * t ++ = * s ++ ; } * t = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( * s <S2SV_ModEnd> ) { if <S2SV_ModStart> == '\\\\n' ) { <S2SV_ModStart> = '<S2SV_blank>' ; } if ( ( * s == '<S2SV_blank>' ) && ( s [ 1 ] <S2SV_ModEnd> == '<S2SV_blank>' || <S2SV_ModStart> == '<S2SV_blank>' || s [ 1 ] == '\\\\n' || s [ 1 ] == 0 ) ) { s ++ ; } else { * t ++ = * s ++ ; } } * t = 0 ; s = t = str ; while ( * s ) { if ( * s == '.' ) { period = 1 ; * t ++ = * s ++ ; } else if ( isdigit ( * s ) ) { * t ++ = * s ++ ; } else if ( period ) { while ( t > str && t [ - 1 ] == '0' ) { t -- ; } if ( t > str && t [ - 1 ] == '.' ) { t -- ; if ( t > str && ! isdigit ( t [ - 1 ] ) ) { * t ++ = '0' ; } } period = 0 ; * t ++ = * s ++ ; } else { period = 0 ; * t ++ = * s ++ ; } } * t = 0 ; s = t = str ; while ( * s ) { if ( * s == '-' && s [ 1 ] == '0' && s [ 2 <S2SV_ModEnd> ] == '<S2SV_blank>' <S2SV_ModStart> ] == '<S2SV_blank>' <S2SV_ModEnd> ) { s\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6647\n\n```\nCWE-20 static int futex_wait_requeue_pi ( u32 __user * uaddr , unsigned int flags , u32 val , ktime_t * abs_time , u32 bitset , u32 __user * uaddr2 ) { struct hrtimer_sleeper timeout , * to = NULL ; struct rt_mutex_waiter rt_waiter ; struct rt_mutex * pi_mutex = NULL ; struct futex_hash_bucket * hb ; union futex_key key2 = FUTEX_KEY_INIT ; struct futex_q q = futex_q_init ; <S2SV_StartBug> int res , ret ; <S2SV_EndBug> if ( ! bitset ) return - EINVAL ; if ( abs_time ) { to = & timeout ; hrtimer_init_on_stack ( & to -> timer , ( flags & FLAGS_CLOCKRT ) ? CLOCK_REALTIME : CLOCK_MONOTONIC , HRTIMER_MODE_ABS ) ; hrtimer_init_sleeper ( to , current ) ; hrtimer_set_expires_range_ns ( & to -> timer , * abs_time , current -> timer_slack_ns ) ; } debug_rt_mutex_init_waiter ( & rt_waiter ) ; rt_waiter . task = NULL ; ret = get_futex_key ( uaddr2 , flags & FLAGS_SHARED , & key2 , VERIFY_WRITE ) ; if ( unlikely ( ret != 0 ) ) goto out ; q . bitset = bitset ; q . rt_waiter = & rt_waiter ; q . requeue_pi_key = & key2 ; ret = futex_wait_setup ( uaddr , val , flags , & q , & hb ) ; if ( ret ) goto out_key2 ; futex_wait_queue_me ( hb , & q , to ) ; spin_lock ( & hb -> lock ) ; ret = handle_early_requeue_pi_wakeup ( hb , & q , & key2 , to ) ; spin_unlock ( & hb -> lock ) ; if ( ret ) goto out_put_keys ; if ( ! q . rt_waiter ) { if ( q . pi_state && ( q . pi_state -> owner != current ) ) { spin_lock ( q . lock_ptr ) ; ret = fixup_pi_state_owner ( uaddr2 , & q , current ) ; spin_unlock ( q . lock_ptr ) ; } } else { WARN_ON ( ! q . pi_state ) ; pi_mutex = & q . pi_state -> pi_mutex ; ret = rt_mutex_finish_proxy_lock ( pi_mutex , to , & rt_waiter , 1 ) ; debug_rt_mutex_free_waiter ( & rt_waiter ) ; spin_lock ( q . lock_ptr ) ; res = fixup_owner ( uaddr2 , & q , ! ret ) ; if ( res ) ret = ( res < 0 ) ? res : 0 ; unqueue_me_pi ( & q ) ; } if ( ret == - EFAULT ) { if ( pi_mutex && rt_mutex_owner ( pi_mutex ) == current ) rt_mutex_unlock ( pi_mutex ) ; } else if ( ret == - EINTR ) { ret = - EWOULDBLOCK ; } out_put_keys : put_futex_key ( & q . key ) ; out_key2 : put_futex_key ( & key2 ) ; out : if ( to ) { hrtimer_cancel ( & to -> timer ) ; destroy_hrtimer_on_stack ( & to -> timer ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> res , ret ; if ( uaddr == uaddr2 ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6712\n\n```\nCWE-119 <S2SV_StartBug> static void iwl_sta_ucode_activate ( struct iwl_priv * priv , u8 sta_id ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> if ( ! ( priv -> stations [ sta_id ] . used & IWL_STA_DRIVER_ACTIVE ) ) IWL_ERR ( priv , \"ACTIVATE<S2SV_blank>a<S2SV_blank>non<S2SV_blank>DRIVER<S2SV_blank>active<S2SV_blank>station<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>\" \"addr<S2SV_blank>%pM\\\\n\" , sta_id , priv -> stations [ sta_id ] . sta . sta . addr ) ; if ( priv -> stations [ sta_id ] . used & IWL_STA_UCODE_ACTIVE ) { IWL_DEBUG_ASSOC ( priv , \"STA<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>addr<S2SV_blank>%pM<S2SV_blank>already<S2SV_blank>present<S2SV_blank>in<S2SV_blank>uCode<S2SV_blank>\" \"(according<S2SV_blank>to<S2SV_blank>driver)\\\\n\" , sta_id , priv -> stations [ sta_id ] . sta . sta . addr ) ; } else { priv -> stations [ sta_id ] . used |= IWL_STA_UCODE_ACTIVE ; IWL_DEBUG_ASSOC ( priv , \"Added<S2SV_blank>STA<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>addr<S2SV_blank>%pM<S2SV_blank>to<S2SV_blank>uCode\\\\n\" , sta_id , priv -> stations [ sta_id ] . sta . sta . addr ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> iwl_sta_ucode_activate ( struct <S2SV_ModStart> sta_id ) { if ( sta_id >= IWLAGN_STATION_COUNT ) { IWL_ERR ( priv , \"invalid<S2SV_blank>sta_id<S2SV_blank>%u\" , sta_id ) ; return - EINVAL ; } <S2SV_ModStart> ) ; } return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int store_icy ( URLContext * h , int size ) { HTTPContext * s = h -> priv_data ; <S2SV_StartBug> int remaining = s -> icy_metaint - s -> icy_data_read ; <S2SV_EndBug> if ( remaining < 0 ) return AVERROR_INVALIDDATA ; if ( ! remaining ) { uint8_t ch ; int len = http_read_stream_all ( h , & ch , 1 ) ; if ( len < 0 ) return len ; if ( ch > 0 ) { char data [ 255 * 16 + 1 ] ; int ret ; len = ch * 16 ; ret = http_read_stream_all ( h , data , len ) ; if ( ret < 0 ) return ret ; data [ len + 1 ] = 0 ; if ( ( ret = av_opt_set ( s , \"icy_metadata_packet\" , data , 0 ) ) < 0 ) return ret ; update_metadata ( s , data ) ; } s -> icy_data_read = 0 ; remaining = s -> icy_metaint ; } return FFMIN ( size , remaining ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> priv_data ; uint64_t remaining ; if ( s -> icy_metaint < s -> icy_data_read ) return AVERROR_INVALIDDATA ; <S2SV_ModEnd> remaining = s <S2SV_ModStart> s -> icy_data_read <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static PyObject * parsenumber ( struct compiling * c , const char * s ) { char * dup , * end ; PyObject * res = NULL ; assert ( s != NULL ) ; if ( strchr ( s , '_' ) == NULL ) { return parsenumber_raw ( c , s ) ; } dup = PyMem_Malloc ( strlen ( s ) + 1 ) ; <S2SV_StartBug> end = dup ; <S2SV_EndBug> for ( ; * s ; s ++ ) { if ( * s != '_' ) { * end ++ = * s ; } } * end = '\\\\0' ; res = parsenumber_raw ( c , dup ) ; PyMem_Free ( dup ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( dup == NULL ) { return PyErr_NoMemory ( ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2117\n\n```\nCWE-200 static int atl2_probe ( struct pci_dev * pdev , const struct pci_device_id * ent ) { struct net_device * netdev ; struct atl2_adapter * adapter ; static int cards_found ; unsigned long mmio_start ; int mmio_len ; int err ; cards_found = 0 ; err = pci_enable_device ( pdev ) ; if ( err ) return err ; if ( pci_set_dma_mask ( pdev , DMA_BIT_MASK ( 32 ) ) && pci_set_consistent_dma_mask ( pdev , DMA_BIT_MASK ( 32 ) ) ) { printk ( KERN_ERR \"atl2:<S2SV_blank>No<S2SV_blank>usable<S2SV_blank>DMA<S2SV_blank>configuration,<S2SV_blank>aborting\\\\n\" ) ; goto err_dma ; } err = pci_request_regions ( pdev , atl2_driver_name ) ; if ( err ) goto err_pci_reg ; pci_set_master ( pdev ) ; err = - ENOMEM ; netdev = alloc_etherdev ( sizeof ( struct atl2_adapter ) ) ; if ( ! netdev ) goto err_alloc_etherdev ; SET_NETDEV_DEV ( netdev , & pdev -> dev ) ; pci_set_drvdata ( pdev , netdev ) ; adapter = netdev_priv ( netdev ) ; adapter -> netdev = netdev ; adapter -> pdev = pdev ; adapter -> hw . back = adapter ; mmio_start = pci_resource_start ( pdev , 0x0 ) ; mmio_len = pci_resource_len ( pdev , 0x0 ) ; adapter -> hw . mem_rang = ( u32 ) mmio_len ; adapter -> hw . hw_addr = ioremap ( mmio_start , mmio_len ) ; if ( ! adapter -> hw . hw_addr ) { err = - EIO ; goto err_ioremap ; } atl2_setup_pcicmd ( pdev ) ; netdev -> netdev_ops = & atl2_netdev_ops ; netdev -> ethtool_ops = & atl2_ethtool_ops ; netdev -> watchdog_timeo = 5 * HZ ; strncpy ( netdev -> name , pci_name ( pdev ) , sizeof ( netdev -> name ) - 1 ) ; netdev -> mem_start = mmio_start ; netdev -> mem_end = mmio_start + mmio_len ; adapter -> bd_number = cards_found ; adapter -> pci_using_64 = false ; err = atl2_sw_init ( adapter ) ; if ( err ) goto err_sw_init ; err = - EIO ; <S2SV_StartBug> netdev -> hw_features = NETIF_F_SG | NETIF_F_HW_VLAN_CTAG_RX ; <S2SV_EndBug> netdev -> features |= ( NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX ) ; atl2_phy_init ( & adapter -> hw ) ; if ( atl2_reset_hw ( & adapter -> hw ) ) { err = - EIO ; goto err_reset ; } atl2_read_mac_addr ( & adapter -> hw ) ; memcpy ( netdev -> dev_addr , adapter -> hw . mac_addr , netdev -> addr_len ) ; if ( ! is_valid_ether_addr ( netdev -> dev_addr ) ) { err = - EIO ; goto err_eeprom ; } atl2_check_options ( adapter ) ; setup_timer ( & adapter -> watchdog_timer , atl2_watchdog , ( unsigned long ) adapter ) ; setup_timer ( & adapter -> phy_config_timer , atl2_phy_config , ( unsigned long ) adapter ) ; INIT_WORK ( & adapter -> reset_task , atl2_reset_task ) ; INIT_WORK ( & adapter -> link_chg_task , atl2_link_chg_task ) ; strcpy ( netdev -> name , \"eth%d\" ) ; err = register_netdev ( netdev ) ; if ( err ) goto err_register ; netif_carrier_off ( netdev ) ; netif_stop_queue ( netdev ) ; cards_found ++ ; return 0 ; err_reset : err_register : err_sw_init : err_eeprom : iounmap ( adapter -> hw . hw_addr ) ; err_ioremap : free_netdev ( netdev ) ; err_alloc_etherdev : pci_release_regions ( pdev ) ; err_pci_reg : err_dma : pci_disable_device ( pdev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> hw_features = <S2SV_ModEnd> NETIF_F_HW_VLAN_CTAG_RX ; netdev\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-0429\n\n```\nCWE-119 void TEMPLATE ( process_block_dec ) ( decoder_info_t * decoder_info , int size , int yposY , int xposY , int sub ) { int width = decoder_info -> width ; int height = decoder_info -> height ; stream_t * stream = decoder_info -> stream ; frame_type_t frame_type = decoder_info -> frame_info . frame_type ; int split_flag = 0 ; if ( yposY >= height || xposY >= width ) return ; int decode_this_size = ( yposY + size <= height ) && ( xposY + size <= width ) ; int decode_rectangular_size = ! decode_this_size && frame_type != I_FRAME ; int bit_start = stream -> bitcnt ; int mode = MODE_SKIP ; block_context_t block_context ; TEMPLATE ( find_block_contexts ) ( yposY , xposY , height , width , size , decoder_info -> deblock_data , & block_context , decoder_info -> use_block_contexts ) ; decoder_info -> block_context = & block_context ; split_flag = decode_super_mode ( decoder_info , size , decode_this_size ) ; mode = decoder_info -> mode ; if ( size == ( 1 << decoder_info -> log2_sb_size ) && ( split_flag || mode != MODE_SKIP ) && decoder_info -> max_delta_qp > 0 ) { int delta_qp = read_delta_qp ( stream ) ; int prev_qp ; if ( yposY == 0 && xposY == 0 ) prev_qp = decoder_info -> frame_info . qp ; else prev_qp = decoder_info -> frame_info . qpb ; decoder_info -> frame_info . qpb = prev_qp + delta_qp ; } decoder_info -> bit_count . super_mode [ decoder_info -> bit_count . stat_frame_type ] += ( stream -> bitcnt - bit_start ) ; <S2SV_StartBug> if ( split_flag ) { <S2SV_EndBug> int new_size = size / 2 ; TEMPLATE ( process_block_dec ) ( decoder_info , new_size , yposY + 0 * new_size , xposY + 0 * new_size , sub ) ; TEMPLATE ( process_block_dec ) ( decoder_info , new_size , yposY + 1 * new_size , xposY + 0 * new_size , sub ) ; TEMPLATE ( process_block_dec ) ( decoder_info , new_size , yposY + 0 * new_size , xposY + 1 * new_size , sub ) ; TEMPLATE ( process_block_dec ) ( decoder_info , new_size , yposY + 1 * new_size , xposY + 1 * new_size , sub ) ; } else if ( decode_this_size || decode_rectangular_size ) { decode_block ( decoder_info , size , yposY , xposY , sub ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( split_flag && size >= MIN_BLOCK_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4565\n\n```\nCWE-264 static ssize_t hfi1_file_write ( struct file * fp , const char __user * data , size_t count , loff_t * offset ) { const struct hfi1_cmd __user * ucmd ; struct hfi1_filedata * fd = fp -> private_data ; struct hfi1_ctxtdata * uctxt = fd -> uctxt ; struct hfi1_cmd cmd ; struct hfi1_user_info uinfo ; struct hfi1_tid_info tinfo ; unsigned long addr ; ssize_t consumed = 0 , copy = 0 , ret = 0 ; void * dest = NULL ; __u64 user_val = 0 ; int uctxt_required = 1 ; int must_be_root = 0 ; <S2SV_StartBug> if ( count < sizeof ( cmd ) ) { <S2SV_EndBug> ret = - EINVAL ; goto bail ; } ucmd = ( const struct hfi1_cmd __user * ) data ; if ( copy_from_user ( & cmd , ucmd , sizeof ( cmd ) ) ) { ret = - EFAULT ; goto bail ; } consumed = sizeof ( cmd ) ; switch ( cmd . type ) { case HFI1_CMD_ASSIGN_CTXT : uctxt_required = 0 ; copy = sizeof ( uinfo ) ; dest = & uinfo ; break ; case HFI1_CMD_SDMA_STATUS_UPD : case HFI1_CMD_CREDIT_UPD : copy = 0 ; break ; case HFI1_CMD_TID_UPDATE : case HFI1_CMD_TID_FREE : case HFI1_CMD_TID_INVAL_READ : copy = sizeof ( tinfo ) ; dest = & tinfo ; break ; case HFI1_CMD_USER_INFO : case HFI1_CMD_RECV_CTRL : case HFI1_CMD_POLL_TYPE : case HFI1_CMD_ACK_EVENT : case HFI1_CMD_CTXT_INFO : case HFI1_CMD_SET_PKEY : case HFI1_CMD_CTXT_RESET : copy = 0 ; user_val = cmd . addr ; break ; case HFI1_CMD_EP_INFO : case HFI1_CMD_EP_ERASE_CHIP : case HFI1_CMD_EP_ERASE_RANGE : case HFI1_CMD_EP_READ_RANGE : case HFI1_CMD_EP_WRITE_RANGE : uctxt_required = 0 ; must_be_root = 1 ; copy = 0 ; break ; default : ret = - EINVAL ; goto bail ; } if ( copy ) { if ( copy_from_user ( dest , ( void __user * ) cmd . addr , copy ) ) { ret = - EFAULT ; goto bail ; } consumed += copy ; } if ( uctxt_required && ! uctxt ) { ret = - EINVAL ; goto bail ; } if ( must_be_root && ! capable ( CAP_SYS_ADMIN ) ) { ret = - EPERM ; goto bail ; } switch ( cmd . type ) { case HFI1_CMD_ASSIGN_CTXT : ret = assign_ctxt ( fp , & uinfo ) ; if ( ret < 0 ) goto bail ; ret = setup_ctxt ( fp ) ; if ( ret ) goto bail ; ret = user_init ( fp ) ; break ; case HFI1_CMD_CTXT_INFO : ret = get_ctxt_info ( fp , ( void __user * ) ( unsigned long ) user_val , cmd . len ) ; break ; case HFI1_CMD_USER_INFO : ret = get_base_info ( fp , ( void __user * ) ( unsigned long ) user_val , cmd . len ) ; break ; case HFI1_CMD_SDMA_STATUS_UPD : break ; case HFI1_CMD_CREDIT_UPD : if ( uctxt && uctxt -> sc ) sc_return_credits ( uctxt -> sc ) ; break ; case HFI1_CMD_TID_UPDATE : ret = hfi1_user_exp_rcv_setup ( fp , & tinfo ) ; if ( ! ret ) { addr = ( unsigned long ) cmd . addr + offsetof ( struct hfi1_tid_info , tidcnt ) ; if ( copy_to_user ( ( void __user * ) addr , & tinfo . tidcnt , sizeof ( tinfo . tidcnt ) + sizeof ( tinfo . length ) ) ) ret = - EFAULT ; } break ; case HFI1_CMD_TID_INVAL_READ : ret = hfi1_user_exp_rcv_invalid ( fp , & tinfo ) ; if ( ret ) break ; addr = ( unsigned long ) cmd . addr + offsetof ( struct hfi1_tid_info , tidcnt ) ; if ( copy_to_user ( ( void __user * ) addr , & tinfo . tidcnt , sizeof ( tinfo . tidcnt ) ) ) ret = - EFAULT ; break ; case HFI1_CMD_TID_FREE : ret = hfi1_user_exp_rcv_clear ( fp , & tinfo ) ; if ( ret ) break ; addr = ( unsigned long ) cmd . addr + offsetof ( struct hfi1_tid_info , tidcnt ) ; if ( copy_to_user ( ( void __user * ) addr , & tinfo . tidcnt , sizeof ( tinfo . tidcnt ) ) ) ret = - EFAULT ; break ; case HFI1_CMD_RECV_CTRL : ret = manage_rcvq ( uctxt , fd -> subctxt , ( int ) user_val ) ; break ; case HFI1_CMD_POLL_TYPE : uctxt -> poll_type = ( typeof ( uctxt -> poll_type ) ) user_val ; break ; case HFI1_CMD_ACK_EVENT : ret = user_event_ack ( uctxt , fd -> subctxt , user_val ) ; break ; case HFI1_CMD_SET_PKEY : if ( HFI1_CAP_IS_USET ( PKEY_CHECK ) ) ret = set_ctxt_pkey ( uctxt , fd -> subctxt , user_val ) ; else ret = - EPERM ; break ; case HFI1_CMD_CTXT_RESET : { struct send_context * sc ; struct hfi1_devdata * dd ; if ( ! uctxt || ! uctxt -> dd || ! uctxt -> sc ) { ret = - EINVAL ; break ; } dd = uctxt -> dd ; sc = uctxt -> sc ; wait_event_interruptible_timeout ( sc -> halt_wait , ( sc -> flags & SCF_HALTED ) , msecs_to_jiffies ( SEND_CTXT_HALT_TIMEOUT ) ) ; if ( ! ( sc -> flags & SCF_HALTED ) ) { ret = - ENOLCK ; break ; } if ( sc -> flags & SCF_FROZEN ) { wait_event_interruptible_timeout ( dd -> event_queue , ! ( ACCESS_ONCE ( dd -> flags ) & HFI1_FROZEN ) , msecs_to_jiffies ( SEND_CTXT_HALT_TIMEOUT ) ) ; if ( dd -> flags & HFI1_FROZEN ) { ret = - ENOLCK ; break ; } if ( dd -> flags & HFI1_FORCED_FREEZE ) { ret = - ENODEV ; break ; } sc_disable ( sc ) ; ret = sc_enable ( sc ) ; hfi1_rcvctrl ( dd , HFI1_RCVCTRL_CTXT_ENB , uctxt -> ctxt ) ; } else { ret = sc_restart ( sc ) ; } if ( ! ret ) sc_return_credits ( sc ) ; break ; } case HFI1_CMD_EP_INFO : case HFI1_CMD_EP_ERASE_CHIP : case HFI1_CMD_EP_ERASE_RANGE : case HFI1_CMD_EP_READ_RANGE : case HFI1_CMD_EP_WRITE_RANGE : ret = handle_eprom_command ( fp , & cmd ) ; break ; } if ( ret >= 0 ) ret = consumed ; bail : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( WARN_ON_ONCE ( ! ib_safe_file_access ( fp ) ) ) return - EACCES ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 SQLRETURN SQLSetDescFieldW ( SQLHDESC descriptor_handle , SQLSMALLINT rec_number , SQLSMALLINT field_identifier , SQLPOINTER value , SQLINTEGER buffer_length ) { DMHDESC descriptor = ( DMHDESC ) descriptor_handle ; SQLRETURN ret ; SQLCHAR s1 [ 100 + LOG_MESSAGE_LEN ] ; int isStrField = 0 ; if ( ! __validate_desc ( descriptor ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>SQL_INVALID_HANDLE\" ) ; # ifdef WITH_HANDLE_REDIRECT { DMHDESC parent_desc ; parent_desc = find_parent_handle ( descriptor , SQL_HANDLE_DESC ) ; if ( parent_desc ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Info:<S2SV_blank>found<S2SV_blank>parent<S2SV_blank>handle\" ) ; if ( CHECK_SQLSETDESCFIELDW ( parent_desc -> connection ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Info:<S2SV_blank>calling<S2SV_blank>redirected<S2SV_blank>driver<S2SV_blank>function\" ) ; return SQLSETDESCFIELDW ( parent_desc -> connection , descriptor , rec_number , field_identifier , value , buffer_length ) ; } } } # endif return SQL_INVALID_HANDLE ; } function_entry ( descriptor ) ; if ( log_info . log_flag ) { <S2SV_StartBug> sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tEntry:\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tDescriptor<S2SV_blank>=<S2SV_blank>%p\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tRec<S2SV_blank>Number<S2SV_blank>=<S2SV_blank>%d\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tField<S2SV_blank>Ident<S2SV_blank>=<S2SV_blank>%s\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tValue<S2SV_blank>=<S2SV_blank>%p\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tBuffer<S2SV_blank>Length<S2SV_blank>=<S2SV_blank>%d\" , <S2SV_EndBug> descriptor , rec_number , __desc_attr_as_string ( s1 , field_identifier ) , value , ( int ) buffer_length ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } thread_protect ( SQL_HANDLE_DESC , descriptor ) ; if ( descriptor -> connection -> state < STATE_C4 ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>HY010\" ) ; __post_internal_error ( & descriptor -> error , ERROR_HY010 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( __check_stmt_from_desc ( descriptor , STATE_S8 ) || __check_stmt_from_desc ( descriptor , STATE_S9 ) || __check_stmt_from_desc ( descriptor , STATE_S10 ) || __check_stmt_from_desc ( descriptor , STATE_S11 ) || __check_stmt_from_desc ( descriptor , STATE_S12 ) || __check_stmt_from_desc ( descriptor , STATE_S13 ) || __check_stmt_from_desc ( descriptor , STATE_S14 ) || __check_stmt_from_desc ( descriptor , STATE_S15 ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>HY010\" ) ; __post_internal_error ( & descriptor -> error , ERROR_HY010 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( rec_number < 0 ) { __post_internal_error ( & descriptor -> error , ERROR_07009 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } switch ( field_identifier ) { case SQL_DESC_ALLOC_TYPE : case SQL_DESC_ARRAY_SIZE : case SQL_DESC_ARRAY_STATUS_PTR : case SQL_DESC_BIND_OFFSET_PTR : case SQL_DESC_BIND_TYPE : case SQL_DESC_COUNT : case SQL_DESC_ROWS_PROCESSED_PTR : case SQL_DESC_AUTO_UNIQUE_VALUE : case SQL_DESC_CASE_SENSITIVE : case SQL_DESC_CONCISE_TYPE : case SQL_DESC_DATA_PTR : case SQL_DESC_DATETIME_INTERVAL_CODE : case SQL_DESC_DATETIME_INTERVAL_PRECISION : case SQL_DESC_DISPLAY_SIZE : case SQL_DESC_FIXED_PREC_SCALE : case SQL_DESC_INDICATOR_PTR : case SQL_DESC_LENGTH : case SQL_DESC_NULLABLE : case SQL_DESC_NUM_PREC_RADIX : case SQL_DESC_OCTET_LENGTH : case SQL_DESC_OCTET_LENGTH_PTR : case SQL_DESC_PARAMETER_TYPE : case SQL_DESC_PRECISION : case SQL_DESC_ROWVER : case SQL_DESC_SCALE : case SQL_DESC_SEARCHABLE : case SQL_DESC_TYPE : case SQL_DESC_UNNAMED : case SQL_DESC_UNSIGNED : case SQL_DESC_UPDATABLE : isStrField = 0 ; break ; case SQL_DESC_BASE_COLUMN_NAME : case SQL_DESC_BASE_TABLE_NAME : case SQL_DESC_CATALOG_NAME : case SQL_DESC_LABEL : case SQL_DESC_LITERAL_PREFIX : case SQL_DESC_LITERAL_SUFFIX : case SQL_DESC_LOCAL_TYPE_NAME : case SQL_DESC_NAME : case SQL_DESC_SCHEMA_NAME : case SQL_DESC_TABLE_NAME : case SQL_DESC_TYPE_NAME : isStrField = 1 ; break ; default : isStrField = buffer_length != SQL_IS_POINTER && buffer_length != SQL_IS_INTEGER && buffer_length != SQL_IS_UINTEGER && buffer_length != SQL_IS_SMALLINT && buffer_length != SQL_IS_USMALLINT ; } if ( isStrField && buffer_length < 0 && buffer_length != SQL_NTS ) { __post_internal_error ( & descriptor -> error , ERROR_HY090 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } <S2SV_StartBug> if ( field_identifier == SQL_DESC_COUNT && ( SQLINTEGER ) value < 0 ) <S2SV_EndBug> { __post_internal_error ( & descriptor -> error , ERROR_07009 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } <S2SV_StartBug> if ( field_identifier == SQL_DESC_PARAMETER_TYPE && value != SQL_PARAM_INPUT <S2SV_EndBug> <S2SV_StartBug> && value != SQL_PARAM_OUTPUT && value != SQL_PARAM_INPUT_OUTPUT && <S2SV_EndBug> <S2SV_StartBug> value != SQL_PARAM_INPUT_OUTPUT_STREAM && value != SQL_PARAM_OUTPUT_STREAM ) <S2SV_EndBug> { __post_internal_error ( & descriptor -> error , ERROR_HY105 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( descriptor -> connection -> unicode_driver || CHECK_SQLSETDESCFIELDW ( descriptor -> connection ) ) { if ( ! CHECK_SQLSETDESCFIELDW ( descriptor -> connection ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>IM001\" ) ; __post_internal_error ( & descriptor -> error , ERROR_IM001 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } ret = SQLSETDESCFIELDW ( descriptor -> connection , descriptor -> driver_desc , rec_number , field_identifier , value , buffer_length ) ; if ( log_info . log_flag ) { sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tExit:[%s]\" , __get_return_status ( ret , s1 ) ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } } else { SQLCHAR * ascii_str = NULL ; if ( ! CHECK_SQLSETDESCFIELD ( descriptor -> connection ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>IM001\" ) ; __post_internal_error ( & descriptor -> error , ERROR_IM001 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } switch ( field_identifier ) { case SQL_DESC_NAME : ascii_str = ( SQLCHAR * ) unicode_to_ansi_alloc ( value , buffer_length , descriptor -> connection , NULL ) ; value = ascii_str ; buffer_length = strlen ( ( char * ) ascii_str ) ; break ; default : break ; } ret = SQLSETDESCFIELD ( descriptor -> connection , descriptor -> driver_desc , rec_number , field_identifier , value , buffer_length ) ; if ( log_info . log_flag ) { sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tExit:[%s]\" , __get_return_status ( ret , s1 ) ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } if ( ascii_str ) { free ( ascii_str ) ; } } return function_return ( SQL_HANDLE_DESC , descriptor , ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> msg , \"\\\\n\\\\t\\\\tEntry:\\\\\\n\\\\n\\\\t\\\\t\\\\tDescriptor<S2SV_blank>=<S2SV_blank>%p\\\\\\n\\\\n\\\\t\\\\t\\\\tRec<S2SV_blank>Number<S2SV_blank>=<S2SV_blank>%d\\\\\\n\\\\n\\\\t\\\\t\\\\tField<S2SV_blank>Ident<S2SV_blank>=<S2SV_blank>%s\\\\\\n\\\\n\\\\t\\\\t\\\\tValue<S2SV_blank>=<S2SV_blank>%p\\\\\\n\\\\n\\\\t\\\\t\\\\tBuffer<S2SV_blank>Length<S2SV_blank>=<S2SV_blank>%d\" <S2SV_ModEnd> , descriptor , <S2SV_ModStart> SQL_DESC_COUNT && ( intptr_t <S2SV_ModEnd> ) value < <S2SV_ModStart> == SQL_DESC_PARAMETER_TYPE && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_OUTPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT_OUTPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT_OUTPUT_STREAM && ( intptr_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14604\n\n```\nCWE-20 static void copy_move_file ( CopyMoveJob * copy_job , GFile * src , GFile * dest_dir , gboolean same_fs , gboolean unique_names , char * * dest_fs_type , SourceInfo * source_info , TransferInfo * transfer_info , GHashTable * debuting_files , GdkPoint * position , gboolean overwrite , gboolean * skipped_file , gboolean readonly_source_fs ) { GFile * dest , * new_dest ; g_autofree gchar * dest_uri = NULL ; GError * error ; GFileCopyFlags flags ; char * primary , * secondary , * details ; int response ; ProgressData pdata ; gboolean would_recurse , is_merge ; CommonJob * job ; gboolean res ; int unique_name_nr ; gboolean handled_invalid_filename ; job = ( CommonJob * ) copy_job ; if ( should_skip_file ( job , src ) ) { * skipped_file = TRUE ; return ; } unique_name_nr = 1 ; handled_invalid_filename = * dest_fs_type != NULL ; if ( unique_names ) { dest = get_unique_target_file ( src , dest_dir , same_fs , * dest_fs_type , unique_name_nr ++ ) ; } else if ( copy_job -> target_name != NULL ) { dest = get_target_file_with_custom_name ( src , dest_dir , * dest_fs_type , same_fs , copy_job -> target_name ) ; } else { dest = get_target_file ( src , dest_dir , * dest_fs_type , same_fs ) ; } if ( test_dir_is_parent ( dest_dir , src ) ) { if ( job -> skip_all_error ) { goto out ; } primary = copy_job -> is_move ? g_strdup ( _ ( \"You<S2SV_blank>cannot<S2SV_blank>move<S2SV_blank>a<S2SV_blank>folder<S2SV_blank>into<S2SV_blank>itself.\" ) ) : g_strdup ( _ ( \"You<S2SV_blank>cannot<S2SV_blank>copy<S2SV_blank>a<S2SV_blank>folder<S2SV_blank>into<S2SV_blank>itself.\" ) ) ; secondary = g_strdup ( _ ( \"The<S2SV_blank>destination<S2SV_blank>folder<S2SV_blank>is<S2SV_blank>inside<S2SV_blank>the<S2SV_blank>source<S2SV_blank>folder.\" ) ) ; response = run_cancel_or_skip_warning ( job , primary , secondary , NULL , source_info -> num_files , source_info -> num_files - transfer_info -> num_files ) ; if ( response == 0 || response == GTK_RESPONSE_DELETE_EVENT ) { abort_job ( job ) ; } else if ( response == 1 ) { job -> skip_all_error = TRUE ; } else if ( response == 2 ) { } else { g_assert_not_reached ( ) ; } goto out ; } if ( test_dir_is_parent ( src , dest ) ) { if ( job -> skip_all_error ) { goto out ; } primary = copy_job -> is_move ? g_strdup ( _ ( \"You<S2SV_blank>cannot<S2SV_blank>move<S2SV_blank>a<S2SV_blank>file<S2SV_blank>over<S2SV_blank>itself.\" ) ) : g_strdup ( _ ( \"You<S2SV_blank>cannot<S2SV_blank>copy<S2SV_blank>a<S2SV_blank>file<S2SV_blank>over<S2SV_blank>itself.\" ) ) ; secondary = g_strdup ( _ ( \"The<S2SV_blank>source<S2SV_blank>file<S2SV_blank>would<S2SV_blank>be<S2SV_blank>overwritten<S2SV_blank>by<S2SV_blank>the<S2SV_blank>destination.\" ) ) ; response = run_cancel_or_skip_warning ( job , primary , secondary , NULL , source_info -> num_files , source_info -> num_files - transfer_info -> num_files ) ; if ( response == 0 || response == GTK_RESPONSE_DELETE_EVENT ) { abort_job ( job ) ; } else if ( response == 1 ) { job -> skip_all_error = TRUE ; } else if ( response == 2 ) { } else { g_assert_not_reached ( ) ; } goto out ; } retry : error = NULL ; flags = G_FILE_COPY_NOFOLLOW_SYMLINKS ; if ( overwrite ) { flags |= G_FILE_COPY_OVERWRITE ; } if ( readonly_source_fs ) { flags |= G_FILE_COPY_TARGET_DEFAULT_PERMS ; } pdata . job = copy_job ; pdata . last_size = 0 ; pdata . source_info = source_info ; pdata . transfer_info = transfer_info ; if ( copy_job -> is_move ) { res = g_file_move ( src , dest , flags , job -> cancellable , copy_file_progress_callback , & pdata , & error ) ; } else { res = g_file_copy ( src , dest , flags , job -> cancellable , copy_file_progress_callback , & pdata , & error ) ; } if ( res ) { GFile * real ; real = map_possibly_volatile_file_to_real ( dest , job -> cancellable , & error ) ; if ( real == NULL ) { res = FALSE ; } else { g_object_unref ( dest ) ; dest = real ; } } if ( res ) { transfer_info -> num_files ++ ; report_copy_progress ( copy_job , source_info , transfer_info ) ; if ( debuting_files ) { dest_uri = g_file_get_uri ( dest ) ; if ( position ) { nautilus_file_changes_queue_schedule_position_set ( dest , * position , job -> screen_num ) ; } else if ( eel_uri_is_desktop ( dest_uri ) ) { nautilus_file_changes_queue_schedule_position_remove ( dest ) ; } g_hash_table_replace ( debuting_files , g_object_ref ( dest ) , GINT_TO_POINTER ( TRUE ) ) ; } if ( copy_job -> is_move ) { nautilus_file_changes_queue_file_moved ( src , dest ) ; } else { nautilus_file_changes_queue_file_added ( dest ) ; } if ( copy_job -> desktop_location != NULL && g_file_equal ( copy_job -> desktop_location , dest_dir ) && is_trusted_desktop_file ( src , job -> cancellable ) ) { <S2SV_StartBug> mark_desktop_file_trusted ( job , <S2SV_EndBug> job -> cancellable , dest , FALSE ) ; } if ( job -> undo_info != NULL ) { nautilus_file_undo_info_ext_add_origin_target_pair ( NAUTILUS_FILE_UNDO_INFO_EXT ( job -> undo_info ) , src , dest ) ; } g_object_unref ( dest ) ; return ; } if ( ! handled_invalid_filename && IS_IO_ERROR ( error , INVALID_FILENAME ) ) { handled_invalid_filename = TRUE ; g_assert ( * dest_fs_type == NULL ) ; * dest_fs_type = query_fs_type ( dest_dir , job -> cancellable ) ; if ( unique_names ) { new_dest = get_unique_target_file ( src , dest_dir , same_fs , * dest_fs_type , unique_name_nr ) ; } else { new_dest = get_target_file ( src , dest_dir , * dest_fs_type , same_fs ) ; } if ( ! g_file_equal ( dest , new_dest ) ) { g_object_unref ( dest ) ; dest = new_dest ; g_error_free ( error ) ; goto retry ; } else { g_object_unref ( new_dest ) ; } } if ( ! overwrite && IS_IO_ERROR ( error , EXISTS ) ) { gboolean is_merge ; FileConflictResponse * response ; g_error_free ( error ) ; if ( unique_names ) { g_object_unref ( dest ) ; dest = get_unique_target_file ( src , dest_dir , same_fs , * dest_fs_type , unique_name_nr ++ ) ; goto retry ; } is_merge = FALSE ; if ( is_dir ( dest ) && is_dir ( src ) ) { is_merge = TRUE ; } if ( ( is_merge && job -> merge_all ) || ( ! is_merge && job -> replace_all ) ) { overwrite = TRUE ; goto retry ; } if ( job -> skip_all_conflict ) { goto out ; } response = handle_copy_move_conflict ( job , src , dest , dest_dir ) ; if ( response -> id == GTK_RESPONSE_CANCEL || response -> id == GTK_RESPONSE_DELETE_EVENT ) { file_conflict_response_free ( response ) ; abort_job ( job ) ; } else if ( response -> id == CONFLICT_RESPONSE_SKIP ) { if ( response -> apply_to_all ) { job -> skip_all_conflict = TRUE ; } file_conflict_response_free ( response ) ; } else if ( response -> id == CONFLICT_RESPONSE_REPLACE ) { if ( response -> apply_to_all ) { if ( is_merge ) { job -> merge_all = TRUE ; } else { job -> replace_all = TRUE ; } } overwrite = TRUE ; file_conflict_response_free ( response ) ; goto retry ; } else if ( response -> id == CONFLICT_RESPONSE_RENAME ) { g_object_unref ( dest ) ; dest = get_target_file_for_display_name ( dest_dir , response -> new_name ) ; file_conflict_response_free ( response ) ; goto retry ; } else { g_assert_not_reached ( ) ; } } else if ( overwrite && IS_IO_ERROR ( error , IS_DIRECTORY ) ) { gboolean existing_file_deleted ; DeleteExistingFileData data ; g_error_free ( error ) ; data . job = job ; data . source = src ; existing_file_deleted = delete_file_recursively ( dest , job -> cancellable , existing_file_removed_callback , & data ) ; if ( existing_file_deleted ) { goto retry ; } } else if ( IS_IO_ERROR ( error , WOULD_RECURSE ) || IS_IO_ERROR ( error , WOULD_MERGE ) ) { is_merge = error -> code == G_IO_ERROR_WOULD_MERGE ; would_recurse = error -> code == G_IO_ERROR_WOULD_RECURSE ; g_error_free ( error ) ; if ( overwrite && would_recurse ) { error = NULL ; if ( ! g_file_delete ( dest , job -> cancellable , & error ) && ! IS_IO_ERROR ( error , NOT_FOUND ) ) { if ( job -> skip_all_error ) { g_error_free ( error ) ; goto out ; } if ( copy_job -> is_move ) { primary = f ( _ ( \"Error<S2SV_blank>while<S2SV_blank>moving<S2SV_blank>“%B”.\" ) , src ) ; } else { primary = f ( _ ( \"Error<S2SV_blank>while<S2SV_blank>copying<S2SV_blank>“%B”.\" ) , src ) ; } secondary = f ( _ ( \"Could<S2SV_blank>not<S2SV_blank>remove<S2SV_blank>the<S2SV_blank>already<S2SV_blank>existing<S2SV_blank>file<S2SV_blank>with<S2SV_blank>the<S2SV_blank>same<S2SV_blank>name<S2SV_blank>in<S2SV_blank>%F.\" ) , dest_dir ) ; details = error -> message ; response = run_warning ( job , primary , secondary , details , TRUE , CANCEL , SKIP_ALL , SKIP , NULL ) ; g_error_free ( error ) ; if ( response == 0 || response == GTK_RESPONSE_DELETE_EVENT ) { abort_job ( job ) ; } else if ( response == 1 ) { job -> skip_all_error = TRUE ; } else if ( response == 2 ) { } else { g_assert_not_reached ( ) ; } goto out ; } if ( error ) { g_error_free ( error ) ; error = NULL ; } nautilus_file_changes_queue_file_removed ( dest ) ; } if ( is_merge ) { same_fs = FALSE ; } if ( ! copy_move_directory ( copy_job , src , & dest , same_fs , would_recurse , dest_fs_type , source_info , transfer_info , debuting_files , skipped_file , readonly_source_fs ) ) { g_assert ( * dest_fs_type != NULL ) ; handled_invalid_filename = TRUE ; goto retry ; } g_object_unref ( dest ) ; return ; } else if ( IS_IO_ERROR ( error , CANCELLED ) ) { g_error_free ( error ) ; } else { if ( job -> skip_all_error ) { g_error_free ( error ) ; goto out ; } primary = f ( _ ( \"Error<S2SV_blank>while<S2SV_blank>copying<S2SV_blank>“%B”.\" ) , src ) ; secondary = f ( _ ( \"There<S2SV_blank>was<S2SV_blank>an<S2SV_blank>error<S2SV_blank>copying<S2SV_blank>the<S2SV_blank>file<S2SV_blank>into<S2SV_blank>%F.\" ) , dest_dir ) ; details = error -> message ; response = run_cancel_or_skip_warning ( job , primary , secondary , details , source_info -> num_files , source_info -> num_files - transfer_info -> num_files ) ; g_error_free ( error ) ; if ( response == 0 || response == GTK_RESPONSE_DELETE_EVENT ) { abort_job ( job ) ; } else if ( response == 1 ) { job -> skip_all_error = TRUE ; } else if ( response == 2 ) { } else { g_assert_not_reached ( ) ; } } out : * skipped_file = TRUE ; g_object_unref ( dest ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { mark_desktop_file_executable <S2SV_ModEnd> ( job ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11590\n\n```\nCWE-190 size_t jsuGetFreeStack ( ) { # ifdef ARM void * frame = __builtin_frame_address ( 0 ) ; size_t stackPos = ( size_t ) ( ( char * ) frame ) ; size_t stackEnd = ( size_t ) ( ( char * ) & LINKER_END_VAR ) ; if ( stackPos < stackEnd ) return 0 ; return stackPos - stackEnd ; # elif defined ( LINUX ) char ptr ; extern void * STACK_BASE ; uint32_t count = ( uint32_t ) ( ( size_t ) STACK_BASE - ( size_t ) & ptr ) ; <S2SV_StartBug> return 1000000 - count ; <S2SV_EndBug> # else return 1000000 ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptr ) ; const uint32_t max_stack = 1000000 ; if ( count > max_stack ) return 0 ; return max_stack <S2SV_ModEnd> - count ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int ipx_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct ipx_sock * ipxs = ipx_sk ( sk ) ; struct sockaddr_ipx * sipx = ( struct sockaddr_ipx * ) msg -> msg_name ; struct ipxhdr * ipx = NULL ; struct sk_buff * skb ; int copied , rc ; lock_sock ( sk ) ; if ( ! ipxs -> port ) { struct sockaddr_ipx uaddr ; uaddr . sipx_port = 0 ; uaddr . sipx_network = 0 ; # ifdef CONFIG_IPX_INTERN rc = - ENETDOWN ; if ( ! ipxs -> intrfc ) goto out ; memcpy ( uaddr . sipx_node , ipxs -> intrfc -> if_node , IPX_NODE_LEN ) ; # endif rc = __ipx_bind ( sock , ( struct sockaddr * ) & uaddr , sizeof ( struct sockaddr_ipx ) ) ; if ( rc ) goto out ; } rc = - ENOTCONN ; if ( sock_flag ( sk , SOCK_ZAPPED ) ) goto out ; skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & rc ) ; if ( ! skb ) goto out ; ipx = ipx_hdr ( skb ) ; copied = ntohs ( ipx -> ipx_pktsize ) - sizeof ( struct ipxhdr ) ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } rc = skb_copy_datagram_iovec ( skb , sizeof ( struct ipxhdr ) , msg -> msg_iov , copied ) ; if ( rc ) goto out_free ; if ( skb -> tstamp . tv64 ) sk -> sk_stamp = skb -> tstamp ; <S2SV_StartBug> msg -> msg_namelen = sizeof ( * sipx ) ; <S2SV_EndBug> if ( sipx ) { sipx -> sipx_family = AF_IPX ; sipx -> sipx_port = ipx -> ipx_source . sock ; memcpy ( sipx -> sipx_node , ipx -> ipx_source . node , IPX_NODE_LEN ) ; sipx -> sipx_network = IPX_SKB_CB ( skb ) -> ipx_source_net ; sipx -> sipx_type = ipx -> ipx_type ; sipx -> sipx_zero = 0 ; } rc = copied ; out_free : skb_free_datagram ( sk , skb ) ; out : release_sock ( sk ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> tstamp ; if ( sipx ) { sipx -> sipx_family = AF_IPX ; sipx -> sipx_port = ipx -> ipx_source . sock ; memcpy ( sipx -> sipx_node , ipx -> ipx_source . node , IPX_NODE_LEN ) ; sipx -> sipx_network = IPX_SKB_CB ( skb ) -> ipx_source_net ; sipx -> sipx_type = ipx -> ipx_type ; sipx -> sipx_zero = 0 ; <S2SV_ModStart> * sipx ) <S2SV_ModEnd> ; } rc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18120\n\n```\nCWE-415 static Gif_Stream * read_gif ( Gif_Reader * grr , int read_flags , const char * landmark , Gif_ReadErrorHandler handler ) { Gif_Stream * gfs ; Gif_Image * gfi ; Gif_Context gfc ; int unknown_block_type = 0 ; if ( gifgetc ( grr ) != 'G' || gifgetc ( grr ) != 'I' || gifgetc ( grr ) != 'F' ) return 0 ; ( void ) gifgetc ( grr ) ; ( void ) gifgetc ( grr ) ; ( void ) gifgetc ( grr ) ; gfs = Gif_NewStream ( ) ; gfi = Gif_NewImage ( ) ; gfc . stream = gfs ; gfc . prefix = Gif_NewArray ( Gif_Code , GIF_MAX_CODE ) ; gfc . suffix = Gif_NewArray ( uint8_t , GIF_MAX_CODE ) ; gfc . length = Gif_NewArray ( uint16_t , GIF_MAX_CODE ) ; gfc . handler = handler ; gfc . gfi = gfi ; gfc . errors [ 0 ] = gfc . errors [ 1 ] = 0 ; if ( ! gfs || ! gfi || ! gfc . prefix || ! gfc . suffix || ! gfc . length ) goto done ; gfs -> landmark = landmark ; GIF_DEBUG ( ( \"\\\\nGIF<S2SV_blank>\" ) ) ; if ( ! read_logical_screen_descriptor ( gfs , grr ) ) goto done ; GIF_DEBUG ( ( \"logscrdesc<S2SV_blank>\" ) ) ; while ( ! gifeof ( grr ) ) { uint8_t block = gifgetbyte ( grr ) ; switch ( block ) { case ',' : GIF_DEBUG ( ( \"imageread<S2SV_blank>%d<S2SV_blank>\" , gfs -> nimages ) ) ; gfi -> identifier = last_name ; last_name = 0 ; if ( ! Gif_AddImage ( gfs , gfi ) ) goto done ; else if ( ! read_image ( grr , & gfc , gfi , read_flags ) ) { Gif_RemoveImage ( gfs , gfs -> nimages - 1 ) ; gfi = 0 ; goto done ; } gfc . gfi = gfi = Gif_NewImage ( ) ; if ( ! gfi ) goto done ; break ; case ';' : GIF_DEBUG ( ( \"term\\\\n\" ) ) ; goto done ; case '!' : block = gifgetbyte ( grr ) ; GIF_DEBUG ( ( \"ext(0x%02X)<S2SV_blank>\" , block ) ) ; switch ( block ) { case 0xF9 : read_graphic_control_extension ( & gfc , gfi , grr ) ; break ; case 0xCE : last_name = suck_data ( last_name , 0 , grr ) ; break ; case 0xFE : if ( ! read_comment_extension ( gfi , grr ) ) goto done ; break ; case 0xFF : read_application_extension ( & gfc , grr ) ; break ; default : read_unknown_extension ( & gfc , grr , block , 0 , 0 ) ; break ; } break ; default : if ( ! unknown_block_type ) { char buf [ 256 ] ; sprintf ( buf , \"unknown<S2SV_blank>block<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>at<S2SV_blank>file<S2SV_blank>offset<S2SV_blank>%u\" , block , grr -> pos - 1 ) ; gif_read_error ( & gfc , 1 , buf ) ; unknown_block_type = 1 ; } break ; } } done : if ( gfs && gfi ) { Gif_Extension * gfex ; gfs -> end_comment = gfi -> comment ; gfi -> comment = 0 ; gfs -> end_extension_list = gfi -> extension_list ; gfi -> extension_list = 0 ; for ( gfex = gfs -> end_extension_list ; gfex ; gfex = gfex -> next ) gfex -> image = NULL ; } Gif_DeleteImage ( gfi ) ; Gif_DeleteArray ( last_name ) ; Gif_DeleteArray ( gfc . prefix ) ; Gif_DeleteArray ( gfc . suffix ) ; Gif_DeleteArray ( gfc . length ) ; gfc . gfi = 0 ; <S2SV_StartBug> if ( gfs ) <S2SV_EndBug> gfs -> errors = gfc . errors [ 1 ] ; if ( gfs && gfc . errors [ 1 ] == 0 && ! ( read_flags & GIF_READ_TRAILING_GARBAGE_OK ) && ! grr -> eofer ( grr ) ) gif_read_error ( & gfc , 0 , \"trailing<S2SV_blank>garbage<S2SV_blank>after<S2SV_blank>GIF<S2SV_blank>ignored\" ) ; gif_read_error ( & gfc , - 1 , 0 ) ; return gfs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; last_name = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8575\n\n```\nCWE-200 static int sco_sock_bind ( struct socket * sock , struct sockaddr * addr , int addr_len ) { struct sockaddr_sco * sa = ( struct sockaddr_sco * ) addr ; struct sock * sk = sock -> sk ; int err = 0 ; BT_DBG ( \"sk<S2SV_blank>%p<S2SV_blank>%pMR\" , sk , & sa -> sco_bdaddr ) ; <S2SV_StartBug> if ( ! addr || addr -> sa_family != AF_BLUETOOTH ) <S2SV_EndBug> return - EINVAL ; lock_sock ( sk ) ; if ( sk -> sk_state != BT_OPEN ) { err = - EBADFD ; goto done ; } if ( sk -> sk_type != SOCK_SEQPACKET ) { err = - EINVAL ; goto done ; } bacpy ( & sco_pi ( sk ) -> src , & sa -> sco_bdaddr ) ; sk -> sk_state = BT_BOUND ; done : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sa_family != AF_BLUETOOTH ) return - EINVAL ; if ( addr_len < sizeof ( struct sockaddr_sco )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4656\n\n```\nCWE-190 int snd_ctl_add ( struct snd_card * card , struct snd_kcontrol * kcontrol ) { struct snd_ctl_elem_id id ; unsigned int idx ; unsigned int count ; int err = - EINVAL ; if ( ! kcontrol ) return err ; if ( snd_BUG_ON ( ! card || ! kcontrol -> info ) ) goto error ; id = kcontrol -> id ; <S2SV_StartBug> down_write ( & card -> controls_rwsem ) ; <S2SV_EndBug> if ( snd_ctl_find_id ( card , & id ) ) { up_write ( & card -> controls_rwsem ) ; dev_err ( card -> dev , \"control<S2SV_blank>%i:%i:%i:%s:%i<S2SV_blank>is<S2SV_blank>already<S2SV_blank>present\\\\n\" , id . iface , id . device , id . subdevice , id . name , id . index ) ; err = - EBUSY ; goto error ; } if ( snd_ctl_find_hole ( card , kcontrol -> count ) < 0 ) { up_write ( & card -> controls_rwsem ) ; err = - ENOMEM ; goto error ; } list_add_tail ( & kcontrol -> list , & card -> controls ) ; card -> controls_count += kcontrol -> count ; kcontrol -> id . numid = card -> last_numid + 1 ; card -> last_numid += kcontrol -> count ; count = kcontrol -> count ; up_write ( & card -> controls_rwsem ) ; for ( idx = 0 ; idx < count ; idx ++ , id . index ++ , id . numid ++ ) snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_ADD , & id ) ; return 0 ; error : snd_ctl_free_one ( kcontrol ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> id ; if ( id . index > UINT_MAX - kcontrol -> count ) goto error ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2844\n\n```\nCWE-000 EAPI_MAIN int elm_main ( int argc , char * argv [ ] ) { int args = 1 ; unsigned char quitOption = 0 ; <S2SV_StartBug> Browser_Window * window ; <S2SV_EndBug> Ecore_Getopt_Value values [ ] = { ECORE_GETOPT_VALUE_STR ( evas_engine_name ) , <S2SV_StartBug> ECORE_GETOPT_VALUE_BOOL ( quitOption ) , <S2SV_EndBug> ECORE_GETOPT_VALUE_BOOL ( frame_flattening_enabled ) , ECORE_GETOPT_VALUE_BOOL ( quitOption ) , ECORE_GETOPT_VALUE_BOOL ( quitOption ) , ECORE_GETOPT_VALUE_BOOL ( quitOption ) , ECORE_GETOPT_VALUE_NONE } ; if ( ! ewk_init ( ) ) return EXIT_FAILURE ; ewk_view_smart_class_set ( miniBrowserViewSmartClass ( ) ) ; ecore_app_args_set ( argc , ( const char * * ) argv ) ; args = ecore_getopt_parse ( & options , values , argc , argv ) ; if ( args < 0 ) return quit ( EINA_FALSE , \"ERROR:<S2SV_blank>could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>options.\\\\n\" ) ; if ( quitOption ) return quit ( EINA_TRUE , NULL ) ; if ( evas_engine_name ) elm_config_preferred_engine_set ( evas_engine_name ) ; # if defined ( WTF_USE_ACCELERATED_COMPOSITING ) && defined ( HAVE_ECORE_X ) else { evas_engine_name = \"opengl_x11\" ; elm_config_preferred_engine_set ( evas_engine_name ) ; } # endif Ewk_Context * context = ewk_context_default_get ( ) ; ewk_context_favicon_database_directory_set ( context , NULL ) ; <S2SV_StartBug> if ( args < argc ) { <S2SV_EndBug> char * url = url_from_user_input ( argv [ args ] ) ; window = window_create ( url ) ; free ( url ) ; } else window = window_create ( DEFAULT_URL ) ; if ( ! window ) return quit ( EINA_FALSE , \"ERROR:<S2SV_blank>could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>browser<S2SV_blank>window.\\\\n\" ) ; windows = eina_list_append ( windows , window ) ; elm_run ( ) ; return quit ( EINA_TRUE , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Browser_Window * window ; char * window_size_string = NULL <S2SV_ModStart> evas_engine_name ) , ECORE_GETOPT_VALUE_STR ( window_size_string ) , <S2SV_ModStart> ; if ( window_size_string ) parse_window_size ( window_size_string , & window_width , & window_height ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 int perf_output_begin ( struct perf_output_handle * handle , struct perf_event * event , unsigned int size , <S2SV_StartBug> int nmi , int sample ) <S2SV_EndBug> { struct ring_buffer * rb ; unsigned long tail , offset , head ; int have_lost ; struct perf_sample_data sample_data ; struct { struct perf_event_header header ; u64 id ; u64 lost ; } lost_event ; rcu_read_lock ( ) ; if ( event -> parent ) event = event -> parent ; rb = rcu_dereference ( event -> rb ) ; if ( ! rb ) goto out ; handle -> rb = rb ; handle -> event = event ; <S2SV_StartBug> handle -> nmi = nmi ; <S2SV_EndBug> handle -> sample = sample ; if ( ! rb -> nr_pages ) goto out ; have_lost = local_read ( & rb -> lost ) ; if ( have_lost ) { lost_event . header . size = sizeof ( lost_event ) ; perf_event_header__init_id ( & lost_event . header , & sample_data , event ) ; size += lost_event . header . size ; } perf_output_get_handle ( handle ) ; do { tail = ACCESS_ONCE ( rb -> user_page -> data_tail ) ; smp_rmb ( ) ; offset = head = local_read ( & rb -> head ) ; head += size ; if ( unlikely ( ! perf_output_space ( rb , tail , offset , head ) ) ) goto fail ; } while ( local_cmpxchg ( & rb -> head , offset , head ) != offset ) ; if ( head - local_read ( & rb -> wakeup ) > rb -> watermark ) local_add ( rb -> watermark , & rb -> wakeup ) ; handle -> page = offset >> ( PAGE_SHIFT + page_order ( rb ) ) ; handle -> page &= rb -> nr_pages - 1 ; handle -> size = offset & ( ( PAGE_SIZE << page_order ( rb ) ) - 1 ) ; handle -> addr = rb -> data_pages [ handle -> page ] ; handle -> addr += handle -> size ; handle -> size = ( PAGE_SIZE << page_order ( rb ) ) - handle -> size ; if ( have_lost ) { lost_event . header . type = PERF_RECORD_LOST ; lost_event . header . misc = 0 ; lost_event . id = event -> id ; lost_event . lost = local_xchg ( & rb -> lost , 0 ) ; perf_output_put ( handle , lost_event ) ; perf_event__output_id_sample ( event , handle , & sample_data ) ; } return 0 ; fail : local_inc ( & rb -> lost ) ; perf_output_put_handle ( handle ) ; out : rcu_read_unlock ( ) ; return - ENOSPC ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size , int <S2SV_ModEnd> sample ) { <S2SV_ModStart> ; handle -> <S2SV_ModEnd> sample = sample\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 int do_fpu_inst ( unsigned short inst , struct pt_regs * regs ) { struct task_struct * tsk = current ; struct sh_fpu_soft_struct * fpu = & ( tsk -> thread . xstate -> softfpu ) ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , 0 ) ; <S2SV_EndBug> if ( ! ( task_thread_info ( tsk ) -> status & TS_USEDFPU ) ) { fpu_init ( fpu ) ; task_thread_info ( tsk ) -> status |= TS_USEDFPU ; } return fpu_emulate ( inst , fpu , regs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-36278\n\n```\nCWE-125 static l_int32 findNextBorderPixel ( l_int32 w , l_int32 h , l_uint32 * data , l_int32 wpl , l_int32 px , l_int32 py , l_int32 * pqpos , l_int32 * pnpx , l_int32 * pnpy ) { l_int32 qpos , i , pos , npx , npy , val ; l_uint32 * line ; qpos = * pqpos ; for ( i = 1 ; i < 8 ; i ++ ) { pos = ( qpos + i ) % 8 ; npx = px + xpostab [ pos ] ; npy = py + ypostab [ pos ] ; <S2SV_StartBug> line = data + npy * wpl ; <S2SV_EndBug> val = GET_DATA_BIT ( line , npx ) ; if ( val ) { * pnpx = npx ; * pnpy = npy ; * pqpos = qpostab [ pos ] ; return 0 ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pos ] ; if ( npx < 0 || npx >= w || npy < 0 || npy >= h ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10067\n\n```\nCWE-119 static Image * ReadLABELImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char geometry [ MaxTextExtent ] , * property ; const char * label ; DrawInfo * draw_info ; Image * image ; MagickBooleanType status ; TypeMetric metrics ; size_t height , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; ( void ) ResetImagePage ( image , \"0x0+0+0\" ) ; property = InterpretImageProperties ( image_info , image , image_info -> filename ) ; ( void ) SetImageProperty ( image , \"label\" , property ) ; property = DestroyString ( property ) ; label = GetImageProperty ( image , \"label\" ) ; draw_info = CloneDrawInfo ( image_info , ( DrawInfo * ) NULL ) ; draw_info -> text = ConstantString ( label ) ; metrics . width = 0 ; metrics . ascent = 0.0 ; status = GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; if ( ( image -> columns == 0 ) && ( image -> rows == 0 ) ) { <S2SV_StartBug> image -> columns = ( size_t ) ( metrics . width + draw_info -> stroke_width + 0.5 ) ; <S2SV_EndBug> image -> rows = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; } else if ( ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) || ( fabs ( image_info -> pointsize ) < MagickEpsilon ) ) { double high , low ; for ( ; ; draw_info -> pointsize *= 2.0 ) { ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; ( void ) GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; height = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; if ( ( image -> columns != 0 ) && ( image -> rows != 0 ) ) { if ( ( width >= image -> columns ) && ( height >= image -> rows ) ) break ; } else if ( ( ( image -> columns != 0 ) && ( width >= image -> columns ) ) || ( ( image -> rows != 0 ) && ( height >= image -> rows ) ) ) break ; } high = draw_info -> pointsize ; for ( low = 1.0 ; ( high - low ) > 0.5 ; ) { draw_info -> pointsize = ( low + high ) / 2.0 ; ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; ( void ) GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; height = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; if ( ( image -> columns != 0 ) && ( image -> rows != 0 ) ) { if ( ( width < image -> columns ) && ( height < image -> rows ) ) low = draw_info -> pointsize + 0.5 ; else high = draw_info -> pointsize - 0.5 ; } else if ( ( ( image -> columns != 0 ) && ( width < image -> columns ) ) || ( ( image -> rows != 0 ) && ( height < image -> rows ) ) ) low = draw_info -> pointsize + 0.5 ; else high = draw_info -> pointsize - 0.5 ; } draw_info -> pointsize = ( low + high ) / 2.0 - 0.5 ; } status = GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; if ( status == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; InheritException ( exception , & image -> exception ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( image -> columns == 0 ) <S2SV_StartBug> image -> columns = ( size_t ) ( metrics . width + draw_info -> stroke_width + 0.5 ) ; <S2SV_EndBug> if ( image -> columns == 0 ) <S2SV_StartBug> image -> columns = ( size_t ) ( draw_info -> pointsize + draw_info -> stroke_width + 0.5 ) ; <S2SV_EndBug> if ( image -> rows == 0 ) <S2SV_StartBug> image -> rows = ( size_t ) ( metrics . ascent - metrics . descent + <S2SV_EndBug> draw_info -> stroke_width + 0.5 ) ; if ( image -> rows == 0 ) <S2SV_StartBug> image -> rows = ( size_t ) ( draw_info -> pointsize + draw_info -> stroke_width + 0.5 ) ; <S2SV_EndBug> status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( SetImageBackgroundColor ( image ) == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; InheritException ( exception , & image -> exception ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , draw_info -> direction == RightToLeftDirection ? image -> columns - metrics . bounds . x2 : 0.0 , draw_info -> gravity == UndefinedGravity ? metrics . ascent : 0.0 ) ; draw_info -> geometry = AcquireString ( geometry ) ; status = AnnotateImage ( image , draw_info ) ; if ( image_info -> pointsize == 0.0 ) { char pointsize [ MaxTextExtent ] ; ( void ) FormatLocaleString ( pointsize , MaxTextExtent , \"%.20g\" , draw_info -> pointsize ) ; ( void ) SetImageProperty ( image , \"label:pointsize\" , pointsize ) ; } draw_info = DestroyDrawInfo ( draw_info ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( size_t ) floor <S2SV_ModStart> ( size_t ) floor <S2SV_ModStart> ( size_t ) floor <S2SV_ModStart> ( size_t ) floor <S2SV_ModStart> ( size_t ) floor\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7294\n\n```\nCWE-20 static void ikev2_parent_inI1outR1_continue ( struct pluto_crypto_req_cont * pcrc , struct pluto_crypto_req * r , err_t ugh ) { struct ke_continuation * ke = ( struct ke_continuation * ) pcrc ; struct msg_digest * md = ke -> md ; struct state * const st = md -> st ; stf_status e ; DBG ( DBG_CONTROLMORE , DBG_log ( \"ikev2<S2SV_blank>parent<S2SV_blank>inI1outR1:<S2SV_blank>calculated<S2SV_blank>ke+nonce,<S2SV_blank>sending<S2SV_blank>R1\" ) ) ; if ( st == NULL ) { loglog ( RC_LOG_SERIOUS , \"%s:<S2SV_blank>Request<S2SV_blank>was<S2SV_blank>disconnected<S2SV_blank>from<S2SV_blank>state\" , __FUNCTION__ ) ; if ( ke -> md ) release_md ( ke -> md ) ; return ; } passert ( ugh == NULL ) ; passert ( cur_state == NULL ) ; passert ( st != NULL ) ; passert ( st -> st_suspended_md == ke -> md ) ; set_suspended ( st , NULL ) ; set_cur_state ( st ) ; st -> st_calculating = FALSE ; e = ikev2_parent_inI1outR1_tail ( pcrc , r ) ; if ( ke -> md != NULL ) { complete_v2_state_transition ( & ke -> md , e ) ; if ( ke -> md ) release_md ( ke -> md ) ; } reset_globals ( ) ; <S2SV_StartBug> passert ( GLOBALS_ARE_RESET ( ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11232\n\n```\nCWE-20 static void * etm_setup_aux ( int event_cpu , void * * pages , int nr_pages , bool overwrite ) { int cpu ; cpumask_t * mask ; struct coresight_device * sink ; struct etm_event_data * event_data = NULL ; event_data = alloc_event_data ( event_cpu ) ; if ( ! event_data ) return NULL ; sink = coresight_get_enabled_sink ( true ) ; if ( ! sink ) goto err ; INIT_WORK ( & event_data -> work , free_event_data ) ; mask = & event_data -> mask ; for_each_cpu ( cpu , mask ) { struct coresight_device * csdev ; csdev = per_cpu ( csdev_src , cpu ) ; if ( ! csdev ) goto err ; event_data -> path [ cpu ] = coresight_build_path ( csdev , sink ) ; if ( IS_ERR ( event_data -> path [ cpu ] ) ) goto err ; } if ( ! sink_ops ( sink ) -> alloc_buffer ) goto err ; <S2SV_StartBug> event_data -> snk_config = <S2SV_EndBug> sink_ops ( sink ) -> alloc_buffer ( sink , cpu , pages , nr_pages , overwrite ) ; if ( ! event_data -> snk_config ) goto err ; out : return event_data ; err : etm_free_aux ( event_data ) ; event_data = NULL ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto err ; cpu = cpumask_first ( mask ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 static int rose_parse_national ( unsigned char * p , struct rose_facilities_struct * facilities , int len ) { unsigned char * pt ; unsigned char l , lg , n = 0 ; int fac_national_digis_received = 0 ; do { switch ( * p & 0xC0 ) { case 0x00 : <S2SV_StartBug> p += 2 ; <S2SV_EndBug> n += 2 ; len -= 2 ; break ; case 0x40 : <S2SV_StartBug> if ( * p == FAC_NATIONAL_RAND ) <S2SV_EndBug> facilities -> rand = ( ( p [ 1 ] << 8 ) & 0xFF00 ) + ( ( p [ 2 ] << 0 ) & 0x00FF ) ; p += 3 ; n += 3 ; len -= 3 ; break ; case 0x80 : <S2SV_StartBug> p += 4 ; <S2SV_EndBug> n += 4 ; len -= 4 ; break ; case 0xC0 : <S2SV_StartBug> l = p [ 1 ] ; <S2SV_EndBug> if ( * p == FAC_NATIONAL_DEST_DIGI ) { if ( ! fac_national_digis_received ) { <S2SV_StartBug> memcpy ( & facilities -> source_digis [ 0 ] , p + 2 , AX25_ADDR_LEN ) ; <S2SV_EndBug> facilities -> source_ndigis = 1 ; } } else if ( * p == FAC_NATIONAL_SRC_DIGI ) { if ( ! fac_national_digis_received ) { <S2SV_StartBug> memcpy ( & facilities -> dest_digis [ 0 ] , p + 2 , AX25_ADDR_LEN ) ; <S2SV_EndBug> facilities -> dest_ndigis = 1 ; } } else if ( * p == FAC_NATIONAL_FAIL_CALL ) { <S2SV_StartBug> memcpy ( & facilities -> fail_call , p + 2 , AX25_ADDR_LEN ) ; <S2SV_EndBug> } else if ( * p == FAC_NATIONAL_FAIL_ADD ) { <S2SV_StartBug> memcpy ( & facilities -> fail_addr , p + 3 , ROSE_ADDR_LEN ) ; <S2SV_EndBug> } <S2SV_StartBug> else if ( * p == FAC_NATIONAL_DIGIS ) { <S2SV_EndBug> fac_national_digis_received = 1 ; facilities -> source_ndigis = 0 ; facilities -> dest_ndigis = 0 ; for ( pt = p + 2 , lg = 0 ; lg < l ; pt += AX25_ADDR_LEN , lg += AX25_ADDR_LEN ) { if ( pt [ 6 ] & AX25_HBIT ) { if ( facilities -> dest_ndigis >= ROSE_MAX_DIGIS ) return - 1 ; memcpy ( & facilities -> dest_digis [ facilities -> dest_ndigis ++ ] , pt , AX25_ADDR_LEN ) ; } else { if ( facilities -> source_ndigis >= ROSE_MAX_DIGIS ) return - 1 ; memcpy ( & facilities -> source_digis [ facilities -> source_ndigis ++ ] , pt , AX25_ADDR_LEN ) ; } } } p += l + 2 ; n += l + 2 ; len -= l + 2 ; break ; } } while ( * p != 0x00 && len > 0 ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 0x00 : if ( len < 2 ) return - 1 ; <S2SV_ModStart> : if ( len < 3 ) return - 1 ; if ( <S2SV_ModStart> case 0x80 : if ( len < 4 ) return - 1 ; <S2SV_ModStart> case 0xC0 : if ( len < 2 ) return - 1 ; l = p [ 1 ] ; if ( len < 2 + l ) return - 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> fac_national_digis_received ) { if ( l < AX25_ADDR_LEN ) return - 1 ; <S2SV_ModStart> fac_national_digis_received ) { if ( l < AX25_ADDR_LEN ) return - 1 ; <S2SV_ModStart> FAC_NATIONAL_FAIL_CALL ) { if ( l < AX25_ADDR_LEN ) return - 1 ; <S2SV_ModStart> FAC_NATIONAL_FAIL_ADD ) { if ( l < 1 + ROSE_ADDR_LEN ) return - 1 ; <S2SV_ModStart> FAC_NATIONAL_DIGIS ) { if ( l % AX25_ADDR_LEN ) return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4515\n\n```\nCWE-200 static long bcm_char_ioctl ( struct file * filp , UINT cmd , ULONG arg ) { struct bcm_tarang_data * pTarang = filp -> private_data ; void __user * argp = ( void __user * ) arg ; struct bcm_mini_adapter * Adapter = pTarang -> Adapter ; INT Status = STATUS_FAILURE ; int timeout = 0 ; struct bcm_ioctl_buffer IoBuffer ; int bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Parameters<S2SV_blank>Passed<S2SV_blank>to<S2SV_blank>control<S2SV_blank>IOCTL<S2SV_blank>cmd=0x%X<S2SV_blank>arg=0x%lX\" , cmd , arg ) ; if ( _IOC_TYPE ( cmd ) != BCM_IOCTL ) return - EFAULT ; if ( _IOC_DIR ( cmd ) & _IOC_READ ) Status = ! access_ok ( VERIFY_WRITE , argp , _IOC_SIZE ( cmd ) ) ; else if ( _IOC_DIR ( cmd ) & _IOC_WRITE ) Status = ! access_ok ( VERIFY_READ , argp , _IOC_SIZE ( cmd ) ) ; else if ( _IOC_NONE == ( _IOC_DIR ( cmd ) & _IOC_NONE ) ) Status = STATUS_SUCCESS ; if ( Status ) return - EFAULT ; if ( Adapter -> device_removed ) return - EFAULT ; if ( FALSE == Adapter -> fw_download_done ) { switch ( cmd ) { case IOCTL_MAC_ADDR_REQ : case IOCTL_LINK_REQ : case IOCTL_CM_REQUEST : case IOCTL_SS_INFO_REQ : case IOCTL_SEND_CONTROL_MESSAGE : case IOCTL_IDLE_REQ : case IOCTL_BCM_GPIO_SET_REQUEST : case IOCTL_BCM_GPIO_STATUS_REQUEST : return - EACCES ; default : break ; } } Status = vendorextnIoctl ( Adapter , cmd , arg ) ; if ( Status != CONTINUE_COMMON_PATH ) return Status ; switch ( cmd ) { case IOCTL_BCM_REGISTER_READ_PRIVATE : { struct bcm_rdm_buffer sRdmBuffer = { 0 } ; PCHAR temp_buff ; UINT Bufflen ; u16 temp_value ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( sRdmBuffer ) ) return - EINVAL ; if ( copy_from_user ( & sRdmBuffer , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( IoBuffer . OutputLength > USHRT_MAX || IoBuffer . OutputLength == 0 ) { return - EINVAL ; } Bufflen = IoBuffer . OutputLength ; temp_value = 4 - ( Bufflen % 4 ) ; Bufflen += temp_value % 4 ; temp_buff = kmalloc ( Bufflen , GFP_KERNEL ) ; if ( ! temp_buff ) return - ENOMEM ; bytes = rdmalt ( Adapter , ( UINT ) sRdmBuffer . Register , ( PUINT ) temp_buff , Bufflen ) ; if ( bytes > 0 ) { Status = STATUS_SUCCESS ; if ( copy_to_user ( IoBuffer . OutputBuffer , temp_buff , bytes ) ) { kfree ( temp_buff ) ; return - EFAULT ; } } else { Status = bytes ; } kfree ( temp_buff ) ; break ; } case IOCTL_BCM_REGISTER_WRITE_PRIVATE : { struct bcm_wrm_buffer sWrmBuffer = { 0 } ; UINT uiTempVar = 0 ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( sWrmBuffer ) ) return - EINVAL ; if ( copy_from_user ( & sWrmBuffer , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; uiTempVar = sWrmBuffer . Register & EEPROM_REJECT_MASK ; if ( ! ( ( Adapter -> pstargetparams -> m_u32Customize ) & VSG_MODE ) && ( ( uiTempVar == EEPROM_REJECT_REG_1 ) || ( uiTempVar == EEPROM_REJECT_REG_2 ) || ( uiTempVar == EEPROM_REJECT_REG_3 ) || ( uiTempVar == EEPROM_REJECT_REG_4 ) ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"EEPROM<S2SV_blank>Access<S2SV_blank>Denied,<S2SV_blank>not<S2SV_blank>in<S2SV_blank>VSG<S2SV_blank>Mode\\\\n\" ) ; return - EFAULT ; } Status = wrmalt ( Adapter , ( UINT ) sWrmBuffer . Register , ( PUINT ) sWrmBuffer . Data , sizeof ( ULONG ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>Done\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>Failed\\\\n\" ) ; Status = - EFAULT ; } break ; } case IOCTL_BCM_REGISTER_READ : case IOCTL_BCM_EEPROM_REGISTER_READ : { struct bcm_rdm_buffer sRdmBuffer = { 0 } ; PCHAR temp_buff = NULL ; UINT uiTempVar = 0 ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>in<S2SV_blank>Idle<S2SV_blank>Mode,<S2SV_blank>Blocking<S2SV_blank>Rdms\\\\n\" ) ; return - EACCES ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( sRdmBuffer ) ) return - EINVAL ; if ( copy_from_user ( & sRdmBuffer , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( IoBuffer . OutputLength > USHRT_MAX || IoBuffer . OutputLength == 0 ) { return - EINVAL ; } temp_buff = kmalloc ( IoBuffer . OutputLength , GFP_KERNEL ) ; if ( ! temp_buff ) return STATUS_FAILURE ; if ( ( ( ( ULONG ) sRdmBuffer . Register & 0x0F000000 ) != 0x0F000000 ) || ( ( ULONG ) sRdmBuffer . Register & 0x3 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"RDM<S2SV_blank>Done<S2SV_blank>On<S2SV_blank>invalid<S2SV_blank>Address<S2SV_blank>:<S2SV_blank>%x<S2SV_blank>Access<S2SV_blank>Denied.\\\\n\" , ( int ) sRdmBuffer . Register ) ; kfree ( temp_buff ) ; return - EINVAL ; } uiTempVar = sRdmBuffer . Register & EEPROM_REJECT_MASK ; bytes = rdmaltWithLock ( Adapter , ( UINT ) sRdmBuffer . Register , ( PUINT ) temp_buff , IoBuffer . OutputLength ) ; if ( bytes > 0 ) { Status = STATUS_SUCCESS ; if ( copy_to_user ( IoBuffer . OutputBuffer , temp_buff , bytes ) ) { kfree ( temp_buff ) ; return - EFAULT ; } } else { Status = bytes ; } kfree ( temp_buff ) ; break ; } case IOCTL_BCM_REGISTER_WRITE : case IOCTL_BCM_EEPROM_REGISTER_WRITE : { struct bcm_wrm_buffer sWrmBuffer = { 0 } ; UINT uiTempVar = 0 ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>in<S2SV_blank>Idle<S2SV_blank>Mode,<S2SV_blank>Blocking<S2SV_blank>Wrms\\\\n\" ) ; return - EACCES ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( sWrmBuffer ) ) return - EINVAL ; if ( copy_from_user ( & sWrmBuffer , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( ( ( ( ULONG ) sWrmBuffer . Register & 0x0F000000 ) != 0x0F000000 ) || ( ( ULONG ) sWrmBuffer . Register & 0x3 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>Done<S2SV_blank>On<S2SV_blank>invalid<S2SV_blank>Address<S2SV_blank>:<S2SV_blank>%x<S2SV_blank>Access<S2SV_blank>Denied.\\\\n\" , ( int ) sWrmBuffer . Register ) ; return - EINVAL ; } uiTempVar = sWrmBuffer . Register & EEPROM_REJECT_MASK ; if ( ! ( ( Adapter -> pstargetparams -> m_u32Customize ) & VSG_MODE ) && ( ( uiTempVar == EEPROM_REJECT_REG_1 ) || ( uiTempVar == EEPROM_REJECT_REG_2 ) || ( uiTempVar == EEPROM_REJECT_REG_3 ) || ( uiTempVar == EEPROM_REJECT_REG_4 ) ) && ( cmd == IOCTL_BCM_REGISTER_WRITE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"EEPROM<S2SV_blank>Access<S2SV_blank>Denied,<S2SV_blank>not<S2SV_blank>in<S2SV_blank>VSG<S2SV_blank>Mode\\\\n\" ) ; return - EFAULT ; } Status = wrmaltWithLock ( Adapter , ( UINT ) sWrmBuffer . Register , ( PUINT ) sWrmBuffer . Data , sWrmBuffer . Length ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>Done\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>Failed\\\\n\" ) ; Status = - EFAULT ; } break ; } case IOCTL_BCM_GPIO_SET_REQUEST : { UCHAR ucResetValue [ 4 ] ; UINT value = 0 ; UINT uiBit = 0 ; UINT uiOperation = 0 ; struct bcm_gpio_info gpio_info = { 0 } ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"GPIO<S2SV_blank>Can\\'t<S2SV_blank>be<S2SV_blank>set/clear<S2SV_blank>in<S2SV_blank>Low<S2SV_blank>power<S2SV_blank>Mode\" ) ; return - EACCES ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( gpio_info ) ) return - EINVAL ; if ( copy_from_user ( & gpio_info , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; uiBit = gpio_info . uiGpioNumber ; uiOperation = gpio_info . uiGpioValue ; value = ( 1 << uiBit ) ; if ( IsReqGpioIsLedInNVM ( Adapter , value ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Sorry,<S2SV_blank>Requested<S2SV_blank>GPIO<0x%X><S2SV_blank>is<S2SV_blank>not<S2SV_blank>correspond<S2SV_blank>to<S2SV_blank>LED<S2SV_blank>!!!\" , value ) ; Status = - EINVAL ; break ; } if ( uiOperation ) { Status = wrmaltWithLock ( Adapter , BCM_GPIO_OUTPUT_SET_REG , ( PUINT ) ( & value ) , sizeof ( UINT ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Set<S2SV_blank>the<S2SV_blank>GPIO<S2SV_blank>bit\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>the<S2SV_blank>%dth<S2SV_blank>GPIO\\\\n\" , uiBit ) ; break ; } } else { Status = wrmaltWithLock ( Adapter , BCM_GPIO_OUTPUT_CLR_REG , ( PUINT ) ( & value ) , sizeof ( UINT ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Set<S2SV_blank>the<S2SV_blank>GPIO<S2SV_blank>bit\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Failed<S2SV_blank>to<S2SV_blank>clear<S2SV_blank>the<S2SV_blank>%dth<S2SV_blank>GPIO\\\\n\" , uiBit ) ; break ; } } bytes = rdmaltWithLock ( Adapter , ( UINT ) GPIO_MODE_REGISTER , ( PUINT ) ucResetValue , sizeof ( UINT ) ) ; if ( bytes < 0 ) { Status = bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"GPIO_MODE_REGISTER<S2SV_blank>read<S2SV_blank>failed\" ) ; break ; } else { Status = STATUS_SUCCESS ; } * ( UINT * ) ucResetValue |= ( 1 << uiBit ) ; Status = wrmaltWithLock ( Adapter , GPIO_MODE_REGISTER , ( PUINT ) ucResetValue , sizeof ( UINT ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Set<S2SV_blank>the<S2SV_blank>GPIO<S2SV_blank>to<S2SV_blank>output<S2SV_blank>Mode\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Failed<S2SV_blank>to<S2SV_blank>put<S2SV_blank>GPIO<S2SV_blank>in<S2SV_blank>Output<S2SV_blank>Mode\\\\n\" ) ; break ; } } break ; case BCM_LED_THREAD_STATE_CHANGE_REQ : { struct bcm_user_thread_req threadReq = { 0 } ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"User<S2SV_blank>made<S2SV_blank>LED<S2SV_blank>thread<S2SV_blank>InActive\" ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"GPIO<S2SV_blank>Can\\'t<S2SV_blank>be<S2SV_blank>set/clear<S2SV_blank>in<S2SV_blank>Low<S2SV_blank>power<S2SV_blank>Mode\" ) ; Status = - EACCES ; break ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( threadReq ) ) return - EINVAL ; if ( copy_from_user ( & threadReq , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( Adapter -> LEDInfo . led_thread_running ) { if ( threadReq . ThreadState == LED_THREAD_ACTIVATION_REQ ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Activating<S2SV_blank>thread<S2SV_blank>req\" ) ; Adapter -> DriverState = LED_THREAD_ACTIVE ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"DeActivating<S2SV_blank>Thread<S2SV_blank>req.....\" ) ; Adapter -> DriverState = LED_THREAD_INACTIVE ; } wake_up ( & Adapter -> LEDInfo . notify_led_event ) ; } } break ; case IOCTL_BCM_GPIO_STATUS_REQUEST : { ULONG uiBit = 0 ; UCHAR ucRead [ 4 ] ; struct bcm_gpio_info gpio_info = { 0 } ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) return - EACCES ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( gpio_info ) ) return - EINVAL ; if ( copy_from_user ( & gpio_info , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; uiBit = gpio_info . uiGpioNumber ; bytes = rdmaltWithLock ( Adapter , ( UINT ) GPIO_PIN_STATE_REGISTER , ( PUINT ) ucRead , sizeof ( UINT ) ) ; if ( bytes < 0 ) { Status = bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"RDM<S2SV_blank>Failed\\\\n\" ) ; return Status ; } else { Status = STATUS_SUCCESS ; } } break ; case IOCTL_BCM_GPIO_MULTI_REQUEST : { UCHAR ucResetValue [ 4 ] ; struct bcm_gpio_multi_info gpio_multi_info [ MAX_IDX ] ; struct bcm_gpio_multi_info * pgpio_multi_info = ( struct bcm_gpio_multi_info * ) gpio_multi_info ; memset ( pgpio_multi_info , 0 , MAX_IDX * sizeof ( struct bcm_gpio_multi_info ) ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) return - EINVAL ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( gpio_multi_info ) ) return - EINVAL ; if ( copy_from_user ( & gpio_multi_info , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( IsReqGpioIsLedInNVM ( Adapter , pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Sorry,<S2SV_blank>Requested<S2SV_blank>GPIO<0x%X><S2SV_blank>is<S2SV_blank>not<S2SV_blank>correspond<S2SV_blank>to<S2SV_blank>NVM<S2SV_blank>LED<S2SV_blank>bit<S2SV_blank>map<0x%X>!!!\" , pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask , Adapter -> gpioBitMap ) ; Status = - EINVAL ; break ; } if ( ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask ) & ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOCommand ) ) { * ( UINT * ) ucResetValue = pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask & pgpio_multi_info [ WIMAX_IDX ] . uiGPIOCommand & pgpio_multi_info [ WIMAX_IDX ] . uiGPIOValue ; if ( * ( UINT * ) ucResetValue ) Status = wrmaltWithLock ( Adapter , BCM_GPIO_OUTPUT_SET_REG , ( PUINT ) ucResetValue , sizeof ( ULONG ) ) ; if ( Status != STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>to<S2SV_blank>BCM_GPIO_OUTPUT_SET_REG<S2SV_blank>Failed.\" ) ; return Status ; } * ( UINT * ) ucResetValue = ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask & pgpio_multi_info [ WIMAX_IDX ] . uiGPIOCommand & ( ~ ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOValue ) ) ) ; if ( * ( UINT * ) ucResetValue ) Status = wrmaltWithLock ( Adapter , BCM_GPIO_OUTPUT_CLR_REG , ( PUINT ) ucResetValue , sizeof ( ULONG ) ) ; if ( Status != STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>to<S2SV_blank>BCM_GPIO_OUTPUT_CLR_REG<S2SV_blank>Failed.\" ) ; return Status ; } } if ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask ) { bytes = rdmaltWithLock ( Adapter , ( UINT ) GPIO_PIN_STATE_REGISTER , ( PUINT ) ucResetValue , sizeof ( UINT ) ) ; if ( bytes < 0 ) { Status = bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"RDM<S2SV_blank>to<S2SV_blank>GPIO_PIN_STATE_REGISTER<S2SV_blank>Failed.\" ) ; return Status ; } else { Status = STATUS_SUCCESS ; } pgpio_multi_info [ WIMAX_IDX ] . uiGPIOValue = ( * ( UINT * ) ucResetValue & pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask ) ; } Status = copy_to_user ( IoBuffer . OutputBuffer , & gpio_multi_info , IoBuffer . OutputLength ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Failed<S2SV_blank>while<S2SV_blank>copying<S2SV_blank>Content<S2SV_blank>to<S2SV_blank>IOBufer<S2SV_blank>for<S2SV_blank>user<S2SV_blank>space<S2SV_blank>err:%d\" , Status ) ; return - EFAULT ; } } break ; case IOCTL_BCM_GPIO_MODE_REQUEST : { UCHAR ucResetValue [ 4 ] ; struct bcm_gpio_multi_mode gpio_multi_mode [ MAX_IDX ] ; struct bcm_gpio_multi_mode * pgpio_multi_mode = ( struct bcm_gpio_multi_mode * ) gpio_multi_mode ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) return - EINVAL ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( gpio_multi_mode ) ) return - EINVAL ; if ( copy_from_user ( & gpio_multi_mode , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; bytes = rdmaltWithLock ( Adapter , ( UINT ) GPIO_MODE_REGISTER , ( PUINT ) ucResetValue , sizeof ( UINT ) ) ; if ( bytes < 0 ) { Status = bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Read<S2SV_blank>of<S2SV_blank>GPIO_MODE_REGISTER<S2SV_blank>failed\" ) ; return Status ; } else { Status = STATUS_SUCCESS ; } if ( IsReqGpioIsLedInNVM ( Adapter , pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Sorry,<S2SV_blank>Requested<S2SV_blank>GPIO<0x%X><S2SV_blank>is<S2SV_blank>not<S2SV_blank>correspond<S2SV_blank>to<S2SV_blank>NVM<S2SV_blank>LED<S2SV_blank>bit<S2SV_blank>map<0x%X>!!!\" , pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask , Adapter -> gpioBitMap ) ; Status = - EINVAL ; break ; } if ( pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask ) { * ( UINT * ) ucResetValue |= ( pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMode & pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask ) ; * ( UINT * ) ucResetValue &= ~ ( ( ~ pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMode ) & pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask ) ; pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMode = * ( UINT * ) ucResetValue ; Status = wrmaltWithLock ( Adapter , GPIO_MODE_REGISTER , ( PUINT ) ucResetValue , sizeof ( ULONG ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>to<S2SV_blank>GPIO_MODE_REGISTER<S2SV_blank>Done\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>to<S2SV_blank>GPIO_MODE_REGISTER<S2SV_blank>Failed\" ) ; Status = - EFAULT ; break ; } } else { pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMode = * ( UINT * ) ucResetValue ; } Status = copy_to_user ( IoBuffer . OutputBuffer , & gpio_multi_mode , IoBuffer . OutputLength ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Failed<S2SV_blank>while<S2SV_blank>copying<S2SV_blank>Content<S2SV_blank>to<S2SV_blank>IOBufer<S2SV_blank>for<S2SV_blank>user<S2SV_blank>space<S2SV_blank>err:%d\" , Status ) ; return - EFAULT ; } } break ; case IOCTL_MAC_ADDR_REQ : case IOCTL_LINK_REQ : case IOCTL_CM_REQUEST : case IOCTL_SS_INFO_REQ : case IOCTL_SEND_CONTROL_MESSAGE : case IOCTL_IDLE_REQ : { PVOID pvBuffer = NULL ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength < sizeof ( struct bcm_link_request ) ) return - EINVAL ; if ( IoBuffer . InputLength > MAX_CNTL_PKT_SIZE ) return - EINVAL ; pvBuffer = memdup_user ( IoBuffer . InputBuffer , IoBuffer . InputLength ) ; if ( IS_ERR ( pvBuffer ) ) return PTR_ERR ( pvBuffer ) ; down ( & Adapter -> LowPowerModeSync ) ; Status = wait_event_interruptible_timeout ( Adapter -> lowpower_mode_wait_queue , ! Adapter -> bPreparingForLowPowerMode , ( 1 * HZ ) ) ; if ( Status == - ERESTARTSYS ) goto cntrlEnd ; if ( Adapter -> bPreparingForLowPowerMode ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Preparing<S2SV_blank>Idle<S2SV_blank>Mode<S2SV_blank>is<S2SV_blank>still<S2SV_blank>True<S2SV_blank>-<S2SV_blank>Hence<S2SV_blank>Rejecting<S2SV_blank>control<S2SV_blank>message\\\\n\" ) ; Status = STATUS_FAILURE ; goto cntrlEnd ; } Status = CopyBufferToControlPacket ( Adapter , ( PVOID ) pvBuffer ) ; cntrlEnd : up ( & Adapter -> LowPowerModeSync ) ; kfree ( pvBuffer ) ; break ; } case IOCTL_BCM_BUFFER_DOWNLOAD_START : { if ( down_trylock ( & Adapter -> NVMRdmWrmLock ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_CHIP_RESET<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>as<S2SV_blank>EEPROM<S2SV_blank>Read/Write<S2SV_blank>is<S2SV_blank>in<S2SV_blank>progress\\\\n\" ) ; return - EACCES ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Starting<S2SV_blank>the<S2SV_blank>firmware<S2SV_blank>download<S2SV_blank>PID<S2SV_blank>=0x%x!!!!\\\\n\" , current -> pid ) ; if ( down_trylock ( & Adapter -> fw_download_sema ) ) return - EBUSY ; Adapter -> bBinDownloaded = FALSE ; Adapter -> fw_download_process_pid = current -> pid ; Adapter -> bCfgDownloaded = FALSE ; Adapter -> fw_download_done = FALSE ; netif_carrier_off ( Adapter -> dev ) ; netif_stop_queue ( Adapter -> dev ) ; Status = reset_card_proc ( Adapter ) ; if ( Status ) { pr_err ( PFX \"%s:<S2SV_blank>reset_card_proc<S2SV_blank>Failed!\\\\n\" , Adapter -> dev -> name ) ; up ( & Adapter -> fw_download_sema ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } mdelay ( 10 ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } case IOCTL_BCM_BUFFER_DOWNLOAD : { struct bcm_firmware_info * psFwInfo = NULL ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Starting<S2SV_blank>the<S2SV_blank>firmware<S2SV_blank>download<S2SV_blank>PID<S2SV_blank>=0x%x!!!!\\\\n\" , current -> pid ) ; if ( ! down_trylock ( & Adapter -> fw_download_sema ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Invalid<S2SV_blank>way<S2SV_blank>to<S2SV_blank>download<S2SV_blank>buffer.<S2SV_blank>Use<S2SV_blank>Start<S2SV_blank>and<S2SV_blank>then<S2SV_blank>call<S2SV_blank>this!!!\\\\n\" ) ; up ( & Adapter -> fw_download_sema ) ; Status = - EINVAL ; return Status ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) { up ( & Adapter -> fw_download_sema ) ; return - EFAULT ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Length<S2SV_blank>for<S2SV_blank>FW<S2SV_blank>DLD<S2SV_blank>is<S2SV_blank>:<S2SV_blank>%lx\\\\n\" , IoBuffer . InputLength ) ; if ( IoBuffer . InputLength > sizeof ( struct bcm_firmware_info ) ) { up ( & Adapter -> fw_download_sema ) ; return - EINVAL ; } psFwInfo = kmalloc ( sizeof ( * psFwInfo ) , GFP_KERNEL ) ; if ( ! psFwInfo ) { up ( & Adapter -> fw_download_sema ) ; return - ENOMEM ; } if ( copy_from_user ( psFwInfo , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) { up ( & Adapter -> fw_download_sema ) ; kfree ( psFwInfo ) ; return - EFAULT ; } if ( ! psFwInfo -> pvMappedFirmwareAddress || ( psFwInfo -> u32FirmwareLength == 0 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Something<S2SV_blank>else<S2SV_blank>is<S2SV_blank>wrong<S2SV_blank>%lu\\\\n\" , psFwInfo -> u32FirmwareLength ) ; up ( & Adapter -> fw_download_sema ) ; kfree ( psFwInfo ) ; Status = - EINVAL ; return Status ; } Status = bcm_ioctl_fw_download ( Adapter , psFwInfo ) ; if ( Status != STATUS_SUCCESS ) { if ( psFwInfo -> u32StartingAddress == CONFIG_BEGIN_ADDR ) BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"IOCTL:<S2SV_blank>Configuration<S2SV_blank>File<S2SV_blank>Upload<S2SV_blank>Failed\\\\n\" ) ; else BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"IOCTL:<S2SV_blank>Firmware<S2SV_blank>File<S2SV_blank>Upload<S2SV_blank>Failed\\\\n\" ) ; if ( Adapter -> LEDInfo . led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY ) { Adapter -> DriverState = DRIVER_INIT ; Adapter -> LEDInfo . bLedInitDone = FALSE ; wake_up ( & Adapter -> LEDInfo . notify_led_event ) ; } } if ( Status != STATUS_SUCCESS ) up ( & Adapter -> fw_download_sema ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , OSAL_DBG , DBG_LVL_ALL , \"IOCTL:<S2SV_blank>Firmware<S2SV_blank>File<S2SV_blank>Uploaded\\\\n\" ) ; kfree ( psFwInfo ) ; return Status ; } case IOCTL_BCM_BUFFER_DOWNLOAD_STOP : { if ( ! down_trylock ( & Adapter -> fw_download_sema ) ) { up ( & Adapter -> fw_download_sema ) ; return - EINVAL ; } if ( down_trylock ( & Adapter -> NVMRdmWrmLock ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"FW<S2SV_blank>download<S2SV_blank>blocked<S2SV_blank>as<S2SV_blank>EEPROM<S2SV_blank>Read/Write<S2SV_blank>is<S2SV_blank>in<S2SV_blank>progress\\\\n\" ) ; up ( & Adapter -> fw_download_sema ) ; return - EACCES ; } Adapter -> bBinDownloaded = TRUE ; Adapter -> bCfgDownloaded = TRUE ; atomic_set ( & Adapter -> CurrNumFreeTxDesc , 0 ) ; Adapter -> CurrNumRecvDescs = 0 ; Adapter -> downloadDDR = 0 ; Status = run_card_proc ( Adapter ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Firm<S2SV_blank>Download<S2SV_blank>Failed\\\\n\" ) ; up ( & Adapter -> fw_download_sema ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Firm<S2SV_blank>Download<S2SV_blank>Over...\\\\n\" ) ; } mdelay ( 10 ) ; if ( StartInterruptUrb ( ( struct bcm_interface_adapter * ) Adapter -> pvInterfaceAdapter ) ) BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Unable<S2SV_blank>to<S2SV_blank>send<S2SV_blank>interrupt...\\\\n\" ) ; timeout = 5 * HZ ; Adapter -> waiting_to_fw_download_done = FALSE ; wait_event_timeout ( Adapter -> ioctl_fw_dnld_wait_queue , Adapter -> waiting_to_fw_download_done , timeout ) ; Adapter -> fw_download_process_pid = INVALID_PID ; Adapter -> fw_download_done = TRUE ; atomic_set ( & Adapter -> CurrNumFreeTxDesc , 0 ) ; Adapter -> CurrNumRecvDescs = 0 ; Adapter -> PrevNumRecvDescs = 0 ; atomic_set ( & Adapter -> cntrlpktCnt , 0 ) ; Adapter -> LinkUpStatus = 0 ; Adapter -> LinkStatus = 0 ; if ( Adapter -> LEDInfo . led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY ) { Adapter -> DriverState = FW_DOWNLOAD_DONE ; wake_up ( & Adapter -> LEDInfo . notify_led_event ) ; } if ( ! timeout ) Status = - ENODEV ; up ( & Adapter -> fw_download_sema ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } case IOCTL_BE_BUCKET_SIZE : Status = 0 ; if ( get_user ( Adapter -> BEBucketSize , ( unsigned long __user * ) arg ) ) Status = - EFAULT ; break ; case IOCTL_RTPS_BUCKET_SIZE : Status = 0 ; if ( get_user ( Adapter -> rtPSBucketSize , ( unsigned long __user * ) arg ) ) Status = - EFAULT ; break ; case IOCTL_CHIP_RESET : { INT NVMAccess = down_trylock ( & Adapter -> NVMRdmWrmLock ) ; if ( NVMAccess ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"<S2SV_blank>IOCTL_BCM_CHIP_RESET<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>as<S2SV_blank>EEPROM<S2SV_blank>Read/Write<S2SV_blank>is<S2SV_blank>in<S2SV_blank>progress\\\\n\" ) ; return - EACCES ; } down ( & Adapter -> RxAppControlQueuelock ) ; Status = reset_card_proc ( Adapter ) ; flushAllAppQ ( ) ; up ( & Adapter -> RxAppControlQueuelock ) ; up ( & Adapter -> NVMRdmWrmLock ) ; ResetCounters ( Adapter ) ; break ; } case IOCTL_QOS_THRESHOLD : { USHORT uiLoopIndex ; Status = 0 ; for ( uiLoopIndex = 0 ; uiLoopIndex < NO_OF_QUEUES ; uiLoopIndex ++ ) { if ( get_user ( Adapter -> PackInfo [ uiLoopIndex ] . uiThreshold , ( unsigned long __user * ) arg ) ) { Status = - EFAULT ; break ; } } break ; } case IOCTL_DUMP_PACKET_INFO : DumpPackInfo ( Adapter ) ; DumpPhsRules ( & Adapter -> stBCMPhsContext ) ; Status = STATUS_SUCCESS ; break ; case IOCTL_GET_PACK_INFO : if ( copy_to_user ( argp , & Adapter -> PackInfo , sizeof ( struct bcm_packet_info ) * NO_OF_QUEUES ) ) return - EFAULT ; Status = STATUS_SUCCESS ; break ; case IOCTL_BCM_SWITCH_TRANSFER_MODE : { UINT uiData = 0 ; if ( copy_from_user ( & uiData , argp , sizeof ( UINT ) ) ) return - EFAULT ; if ( uiData ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_SWITCH_TRANSFER_MODE:<S2SV_blank>ETH_PACKET_TUNNELING_MODE\\\\n\" ) ; Adapter -> TransferMode = ETH_PACKET_TUNNELING_MODE ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_SWITCH_TRANSFER_MODE:<S2SV_blank>IP_PACKET_ONLY_MODE\\\\n\" ) ; Adapter -> TransferMode = IP_PACKET_ONLY_MODE ; } Status = STATUS_SUCCESS ; break ; } case IOCTL_BCM_GET_DRIVER_VERSION : { ulong len ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; len = min_t ( ulong , IoBuffer . OutputLength , strlen ( DRV_VERSION ) + 1 ) ; if ( copy_to_user ( IoBuffer . OutputBuffer , DRV_VERSION , len ) ) return - EFAULT ; Status = STATUS_SUCCESS ; break ; } case IOCTL_BCM_GET_CURRENT_STATUS : { struct bcm_link_state link_state ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"copy_from_user<S2SV_blank>failed..\\\\n\" ) ; return - EFAULT ; } if ( IoBuffer . OutputLength != sizeof ( link_state ) ) { Status = - EINVAL ; break ; } memset ( & link_state , 0 , sizeof ( link_state ) ) ; link_state . bIdleMode = Adapter -> IdleMode ; link_state . bShutdownMode = Adapter -> bShutStatus ; link_state . ucLinkStatus = Adapter -> LinkStatus ; if ( copy_to_user ( IoBuffer . OutputBuffer , & link_state , min_t ( size_t , sizeof ( link_state ) , IoBuffer . OutputLength ) ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy_to_user<S2SV_blank>Failed..\\\\n\" ) ; return - EFAULT ; } Status = STATUS_SUCCESS ; break ; } case IOCTL_BCM_SET_MAC_TRACING : { UINT tracing_flag ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & tracing_flag , IoBuffer . InputBuffer , sizeof ( UINT ) ) ) return - EFAULT ; if ( tracing_flag ) Adapter -> pTarangs -> MacTracingEnabled = TRUE ; else Adapter -> pTarangs -> MacTracingEnabled = FALSE ; break ; } case IOCTL_BCM_GET_DSX_INDICATION : { ULONG ulSFId = 0 ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength < sizeof ( struct bcm_add_indication_alt ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Mismatch<S2SV_blank>req:<S2SV_blank>%lx<S2SV_blank>needed<S2SV_blank>is<S2SV_blank>=0x%zx!!!\" , IoBuffer . OutputLength , sizeof ( struct bcm_add_indication_alt ) ) ; return - EINVAL ; } if ( copy_from_user ( & ulSFId , IoBuffer . InputBuffer , sizeof ( ulSFId ) ) ) return - EFAULT ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Get<S2SV_blank>DSX<S2SV_blank>Data<S2SV_blank>SF<S2SV_blank>ID<S2SV_blank>is<S2SV_blank>=%lx\\\\n\" , ulSFId ) ; get_dsx_sf_data_to_application ( Adapter , ulSFId , IoBuffer . OutputBuffer ) ; Status = STATUS_SUCCESS ; } break ; case IOCTL_BCM_GET_HOST_MIBS : { PVOID temp_buff ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength != sizeof ( struct bcm_host_stats_mibs ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Length<S2SV_blank>Check<S2SV_blank>failed<S2SV_blank>%lu<S2SV_blank>%zd\\\\n\" , IoBuffer . OutputLength , sizeof ( struct bcm_host_stats_mibs ) ) ; return - EINVAL ; } temp_buff = kzalloc ( sizeof ( struct bcm_host_stats_mibs ) , GFP_KERNEL ) ; if ( ! temp_buff ) return STATUS_FAILURE ; Status = ProcessGetHostMibs ( Adapter , temp_buff ) ; GetDroppedAppCntrlPktMibs ( temp_buff , pTarang ) ; if ( Status != STATUS_FAILURE ) if ( copy_to_user ( IoBuffer . OutputBuffer , temp_buff , sizeof ( struct bcm_host_stats_mibs ) ) ) { kfree ( temp_buff ) ; return - EFAULT ; } kfree ( temp_buff ) ; break ; } case IOCTL_BCM_WAKE_UP_DEVICE_FROM_IDLE : if ( ( FALSE == Adapter -> bTriedToWakeUpFromlowPowerMode ) && ( TRUE == Adapter -> IdleMode ) ) { Adapter -> usIdleModePattern = ABORT_IDLE_MODE ; Adapter -> bWakeUpDevice = TRUE ; wake_up ( & Adapter -> process_rx_cntrlpkt ) ; } Status = STATUS_SUCCESS ; break ; case IOCTL_BCM_BULK_WRM : { struct bcm_bulk_wrm_buffer * pBulkBuffer ; UINT uiTempVar = 0 ; PCHAR pvBuffer = NULL ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode,<S2SV_blank>Blocking<S2SV_blank>Wrms\\\\n\" ) ; Status = - EACCES ; break ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength < sizeof ( ULONG ) * 2 ) return - EINVAL ; pvBuffer = memdup_user ( IoBuffer . InputBuffer , IoBuffer . InputLength ) ; if ( IS_ERR ( pvBuffer ) ) return PTR_ERR ( pvBuffer ) ; pBulkBuffer = ( struct bcm_bulk_wrm_buffer * ) pvBuffer ; if ( ( ( ULONG ) pBulkBuffer -> Register & 0x0F000000 ) != 0x0F000000 || ( ( ULONG ) pBulkBuffer -> Register & 0x3 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>Done<S2SV_blank>On<S2SV_blank>invalid<S2SV_blank>Address<S2SV_blank>:<S2SV_blank>%x<S2SV_blank>Access<S2SV_blank>Denied.\\\\n\" , ( int ) pBulkBuffer -> Register ) ; kfree ( pvBuffer ) ; Status = - EINVAL ; break ; } uiTempVar = pBulkBuffer -> Register & EEPROM_REJECT_MASK ; if ( ! ( ( Adapter -> pstargetparams -> m_u32Customize ) & VSG_MODE ) && ( ( uiTempVar == EEPROM_REJECT_REG_1 ) || ( uiTempVar == EEPROM_REJECT_REG_2 ) || ( uiTempVar == EEPROM_REJECT_REG_3 ) || ( uiTempVar == EEPROM_REJECT_REG_4 ) ) && ( cmd == IOCTL_BCM_REGISTER_WRITE ) ) { kfree ( pvBuffer ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"EEPROM<S2SV_blank>Access<S2SV_blank>Denied,<S2SV_blank>not<S2SV_blank>in<S2SV_blank>VSG<S2SV_blank>Mode\\\\n\" ) ; Status = - EFAULT ; break ; } if ( pBulkBuffer -> SwapEndian == FALSE ) Status = wrmWithLock ( Adapter , ( UINT ) pBulkBuffer -> Register , ( PCHAR ) pBulkBuffer -> Values , IoBuffer . InputLength - 2 * sizeof ( ULONG ) ) ; else Status = wrmaltWithLock ( Adapter , ( UINT ) pBulkBuffer -> Register , ( PUINT ) pBulkBuffer -> Values , IoBuffer . InputLength - 2 * sizeof ( ULONG ) ) ; if ( Status != STATUS_SUCCESS ) BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>Failed\\\\n\" ) ; kfree ( pvBuffer ) ; break ; } case IOCTL_BCM_GET_NVM_SIZE : if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( Adapter -> eNVMType == NVM_EEPROM || Adapter -> eNVMType == NVM_FLASH ) { if ( copy_to_user ( IoBuffer . OutputBuffer , & Adapter -> uiNVMDSDSize , sizeof ( UINT ) ) ) return - EFAULT ; } Status = STATUS_SUCCESS ; break ; case IOCTL_BCM_CAL_INIT : { UINT uiSectorSize = 0 ; if ( Adapter -> eNVMType == NVM_FLASH ) { if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & uiSectorSize , IoBuffer . InputBuffer , sizeof ( UINT ) ) ) return - EFAULT ; if ( ( uiSectorSize < MIN_SECTOR_SIZE ) || ( uiSectorSize > MAX_SECTOR_SIZE ) ) { if ( copy_to_user ( IoBuffer . OutputBuffer , & Adapter -> uiSectorSize , sizeof ( UINT ) ) ) return - EFAULT ; } else { if ( IsFlash2x ( Adapter ) ) { if ( copy_to_user ( IoBuffer . OutputBuffer , & Adapter -> uiSectorSize , sizeof ( UINT ) ) ) return - EFAULT ; } else { if ( ( TRUE == Adapter -> bShutStatus ) || ( TRUE == Adapter -> IdleMode ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; return - EACCES ; } Adapter -> uiSectorSize = uiSectorSize ; BcmUpdateSectorSize ( Adapter , Adapter -> uiSectorSize ) ; } } Status = STATUS_SUCCESS ; } else { Status = STATUS_FAILURE ; } } break ; case IOCTL_BCM_SET_DEBUG : # ifdef DEBUG { struct bcm_user_debug_state sUserDebugState ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"In<S2SV_blank>SET_DEBUG<S2SV_blank>ioctl\\\\n\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & sUserDebugState , IoBuffer . InputBuffer , sizeof ( struct bcm_user_debug_state ) ) ) return - EFAULT ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"IOCTL_BCM_SET_DEBUG:<S2SV_blank>OnOff=%d<S2SV_blank>Type<S2SV_blank>=<S2SV_blank>0x%x<S2SV_blank>\" , sUserDebugState . OnOff , sUserDebugState . Type ) ; sUserDebugState . Subtype = 1 << sUserDebugState . Subtype ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"actual<S2SV_blank>Subtype=0x%x\\\\n\" , sUserDebugState . Subtype ) ; Adapter -> stDebugState . type |= sUserDebugState . Type ; if ( sUserDebugState . OnOff ) Adapter -> stDebugState . subtype [ sUserDebugState . Type ] |= sUserDebugState . Subtype ; else Adapter -> stDebugState . subtype [ sUserDebugState . Type ] &= ~ sUserDebugState . Subtype ; BCM_SHOW_DEBUG_BITMAP ( Adapter ) ; } # endif break ; case IOCTL_BCM_NVM_READ : case IOCTL_BCM_NVM_WRITE : { struct bcm_nvm_readwrite stNVMReadWrite ; PUCHAR pReadData = NULL ; ULONG ulDSDMagicNumInUsrBuff = 0 ; struct timeval tv0 , tv1 ; memset ( & tv0 , 0 , sizeof ( struct timeval ) ) ; memset ( & tv1 , 0 , sizeof ( struct timeval ) ) ; if ( ( Adapter -> eNVMType == NVM_FLASH ) && ( Adapter -> uiFlashLayoutMajorVersion == 0 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"The<S2SV_blank>Flash<S2SV_blank>Control<S2SV_blank>Section<S2SV_blank>is<S2SV_blank>Corrupted.<S2SV_blank>Hence<S2SV_blank>Rejection<S2SV_blank>on<S2SV_blank>NVM<S2SV_blank>Read/Write\\\\n\" ) ; return - EFAULT ; } if ( IsFlash2x ( Adapter ) ) { if ( ( Adapter -> eActiveDSD != DSD0 ) && ( Adapter -> eActiveDSD != DSD1 ) && ( Adapter -> eActiveDSD != DSD2 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"No<S2SV_blank>DSD<S2SV_blank>is<S2SV_blank>active..hence<S2SV_blank>NVM<S2SV_blank>Command<S2SV_blank>is<S2SV_blank>blocked\" ) ; return STATUS_FAILURE ; } } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & stNVMReadWrite , ( IOCTL_BCM_NVM_READ == cmd ) ? IoBuffer . OutputBuffer : IoBuffer . InputBuffer , sizeof ( struct bcm_nvm_readwrite ) ) ) return - EFAULT ; if ( stNVMReadWrite . uiNumBytes > Adapter -> uiNVMDSDSize ) return STATUS_FAILURE ; if ( stNVMReadWrite . uiOffset > Adapter -> uiNVMDSDSize - stNVMReadWrite . uiNumBytes ) { return STATUS_FAILURE ; } pReadData = memdup_user ( stNVMReadWrite . pBuffer , stNVMReadWrite . uiNumBytes ) ; if ( IS_ERR ( pReadData ) ) return PTR_ERR ( pReadData ) ; do_gettimeofday ( & tv0 ) ; if ( IOCTL_BCM_NVM_READ == cmd ) { down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadData ) ; return - EACCES ; } Status = BeceemNVMRead ( Adapter , ( PUINT ) pReadData , stNVMReadWrite . uiOffset , stNVMReadWrite . uiNumBytes ) ; up ( & Adapter -> NVMRdmWrmLock ) ; if ( Status != STATUS_SUCCESS ) { kfree ( pReadData ) ; return Status ; } if ( copy_to_user ( stNVMReadWrite . pBuffer , pReadData , stNVMReadWrite . uiNumBytes ) ) { kfree ( pReadData ) ; return - EFAULT ; } } else { down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadData ) ; return - EACCES ; } Adapter -> bHeaderChangeAllowed = TRUE ; if ( IsFlash2x ( Adapter ) ) { Status = BcmFlash2xCorruptSig ( Adapter , Adapter -> eActiveDSD ) ; if ( Status != STATUS_SUCCESS ) { if ( ( ( stNVMReadWrite . uiOffset + stNVMReadWrite . uiNumBytes ) != Adapter -> uiNVMDSDSize ) || ( stNVMReadWrite . uiNumBytes < SIGNATURE_SIZE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"DSD<S2SV_blank>Sig<S2SV_blank>is<S2SV_blank>present<S2SV_blank>neither<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>nor<S2SV_blank>User<S2SV_blank>provided<S2SV_blank>Input..\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadData ) ; return Status ; } ulDSDMagicNumInUsrBuff = ntohl ( * ( PUINT ) ( pReadData + stNVMReadWrite . uiNumBytes - SIGNATURE_SIZE ) ) ; if ( ulDSDMagicNumInUsrBuff != DSD_IMAGE_MAGIC_NUMBER ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"DSD<S2SV_blank>Sig<S2SV_blank>is<S2SV_blank>present<S2SV_blank>neither<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>nor<S2SV_blank>User<S2SV_blank>provided<S2SV_blank>Input..\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadData ) ; return Status ; } } } Status = BeceemNVMWrite ( Adapter , ( PUINT ) pReadData , stNVMReadWrite . uiOffset , stNVMReadWrite . uiNumBytes , stNVMReadWrite . bVerify ) ; if ( IsFlash2x ( Adapter ) ) BcmFlash2xWriteSig ( Adapter , Adapter -> eActiveDSD ) ; Adapter -> bHeaderChangeAllowed = FALSE ; up ( & Adapter -> NVMRdmWrmLock ) ; if ( Status != STATUS_SUCCESS ) { kfree ( pReadData ) ; return Status ; } } do_gettimeofday ( & tv1 ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"<S2SV_blank>timetaken<S2SV_blank>by<S2SV_blank>Write/read<S2SV_blank>:%ld<S2SV_blank>msec\\\\n\" , ( tv1 . tv_sec - tv0 . tv_sec ) * 1000 + ( tv1 . tv_usec - tv0 . tv_usec ) / 1000 ) ; kfree ( pReadData ) ; return STATUS_SUCCESS ; } case IOCTL_BCM_FLASH2X_SECTION_READ : { struct bcm_flash2x_readwrite sFlash2xRead = { 0 } ; PUCHAR pReadBuff = NULL ; UINT NOB = 0 ; UINT BuffSize = 0 ; UINT ReadBytes = 0 ; UINT ReadOffset = 0 ; void __user * OutPutBuff ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_FLASH2X_SECTION_READ<S2SV_blank>Called\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & sFlash2xRead , IoBuffer . InputBuffer , sizeof ( struct bcm_flash2x_readwrite ) ) ) return - EFAULT ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.Section<S2SV_blank>:%x\" , sFlash2xRead . Section ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.offset<S2SV_blank>:%x\" , sFlash2xRead . offset ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.numOfBytes<S2SV_blank>:%x\" , sFlash2xRead . numOfBytes ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.bVerify<S2SV_blank>:%x\\\\n\" , sFlash2xRead . bVerify ) ; if ( validateFlash2xReadWrite ( Adapter , & sFlash2xRead ) == FALSE ) return STATUS_FAILURE ; NOB = sFlash2xRead . numOfBytes ; if ( NOB > Adapter -> uiSectorSize ) BuffSize = Adapter -> uiSectorSize ; else BuffSize = NOB ; ReadOffset = sFlash2xRead . offset ; OutPutBuff = IoBuffer . OutputBuffer ; pReadBuff = ( PCHAR ) kzalloc ( BuffSize , GFP_KERNEL ) ; if ( pReadBuff == NULL ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Memory<S2SV_blank>allocation<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>Flash<S2SV_blank>2.x<S2SV_blank>Read<S2SV_blank>Structure\" ) ; return - ENOMEM ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; return - EACCES ; } while ( NOB ) { if ( NOB > Adapter -> uiSectorSize ) ReadBytes = Adapter -> uiSectorSize ; else ReadBytes = NOB ; Status = BcmFlash2xBulkRead ( Adapter , ( PUINT ) pReadBuff , sFlash2xRead . Section , ReadOffset , ReadBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Flash<S2SV_blank>2x<S2SV_blank>read<S2SV_blank>err<S2SV_blank>with<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; break ; } BCM_DEBUG_PRINT_BUFFER ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , pReadBuff , ReadBytes ) ; Status = copy_to_user ( OutPutBuff , pReadBuff , ReadBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Copy<S2SV_blank>to<S2SV_blank>use<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>status<S2SV_blank>:%d\" , Status ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; return - EFAULT ; } NOB = NOB - ReadBytes ; if ( NOB ) { ReadOffset = ReadOffset + ReadBytes ; OutPutBuff = OutPutBuff + ReadBytes ; } } up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; } break ; case IOCTL_BCM_FLASH2X_SECTION_WRITE : { struct bcm_flash2x_readwrite sFlash2xWrite = { 0 } ; PUCHAR pWriteBuff ; void __user * InputAddr ; UINT NOB = 0 ; UINT BuffSize = 0 ; UINT WriteOffset = 0 ; UINT WriteBytes = 0 ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } Adapter -> bAllDSDWriteAllow = FALSE ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_FLASH2X_SECTION_WRITE<S2SV_blank>Called\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & sFlash2xWrite , IoBuffer . InputBuffer , sizeof ( struct bcm_flash2x_readwrite ) ) ) return - EFAULT ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.Section<S2SV_blank>:%x\" , sFlash2xWrite . Section ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.offset<S2SV_blank>:%d\" , sFlash2xWrite . offset ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.numOfBytes<S2SV_blank>:%x\" , sFlash2xWrite . numOfBytes ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.bVerify<S2SV_blank>:%x\\\\n\" , sFlash2xWrite . bVerify ) ; if ( ( sFlash2xWrite . Section != VSA0 ) && ( sFlash2xWrite . Section != VSA1 ) && ( sFlash2xWrite . Section != VSA2 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Only<S2SV_blank>VSA<S2SV_blank>write<S2SV_blank>is<S2SV_blank>allowed\" ) ; return - EINVAL ; } if ( validateFlash2xReadWrite ( Adapter , & sFlash2xWrite ) == FALSE ) return STATUS_FAILURE ; InputAddr = sFlash2xWrite . pDataBuff ; WriteOffset = sFlash2xWrite . offset ; NOB = sFlash2xWrite . numOfBytes ; if ( NOB > Adapter -> uiSectorSize ) BuffSize = Adapter -> uiSectorSize ; else BuffSize = NOB ; pWriteBuff = kmalloc ( BuffSize , GFP_KERNEL ) ; if ( pWriteBuff == NULL ) return - ENOMEM ; WriteBytes = Adapter -> uiSectorSize ; if ( WriteOffset % Adapter -> uiSectorSize ) WriteBytes = Adapter -> uiSectorSize - ( WriteOffset % Adapter -> uiSectorSize ) ; if ( NOB < WriteBytes ) WriteBytes = NOB ; down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pWriteBuff ) ; return - EACCES ; } BcmFlash2xCorruptSig ( Adapter , sFlash2xWrite . Section ) ; do { Status = copy_from_user ( pWriteBuff , InputAddr , WriteBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>to<S2SV_blank>user<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>status<S2SV_blank>:%d\" , Status ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pWriteBuff ) ; return - EFAULT ; } BCM_DEBUG_PRINT_BUFFER ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , pWriteBuff , WriteBytes ) ; Status = BcmFlash2xBulkWrite ( Adapter , ( PUINT ) pWriteBuff , sFlash2xWrite . Section , WriteOffset , WriteBytes , sFlash2xWrite . bVerify ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>2x<S2SV_blank>read<S2SV_blank>err<S2SV_blank>with<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; break ; } NOB = NOB - WriteBytes ; if ( NOB ) { WriteOffset = WriteOffset + WriteBytes ; InputAddr = InputAddr + WriteBytes ; if ( NOB > Adapter -> uiSectorSize ) WriteBytes = Adapter -> uiSectorSize ; else WriteBytes = NOB ; } } while ( NOB > 0 ) ; BcmFlash2xWriteSig ( Adapter , sFlash2xWrite . Section ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pWriteBuff ) ; } break ; case IOCTL_BCM_GET_FLASH2X_SECTION_BITMAP : { struct bcm_flash2x_bitmap * psFlash2xBitMap ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_GET_FLASH2X_SECTION_BITMAP<S2SV_blank>Called\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength != sizeof ( struct bcm_flash2x_bitmap ) ) return - EINVAL ; psFlash2xBitMap = kzalloc ( sizeof ( struct bcm_flash2x_bitmap ) , GFP_KERNEL ) ; if ( psFlash2xBitMap == NULL ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Memory<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available\" ) ; return - ENOMEM ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( psFlash2xBitMap ) ; return - EACCES ; } BcmGetFlash2xSectionalBitMap ( Adapter , psFlash2xBitMap ) ; up ( & Adapter -> NVMRdmWrmLock ) ; if ( copy_to_user ( IoBuffer . OutputBuffer , psFlash2xBitMap , sizeof ( struct bcm_flash2x_bitmap ) ) ) { kfree ( psFlash2xBitMap ) ; return - EFAULT ; } kfree ( psFlash2xBitMap ) ; } break ; case IOCTL_BCM_SET_ACTIVE_SECTION : { enum bcm_flash2x_section_val eFlash2xSectionVal = 0 ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_SET_ACTIVE_SECTION<S2SV_blank>Called\" ) ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>IOCTL<S2SV_blank>BUFFER<S2SV_blank>failed\" ) ; return - EFAULT ; } Status = copy_from_user ( & eFlash2xSectionVal , IoBuffer . InputBuffer , sizeof ( INT ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>flash<S2SV_blank>section<S2SV_blank>val<S2SV_blank>failed\" ) ; return - EFAULT ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return - EACCES ; } Status = BcmSetActiveSection ( Adapter , eFlash2xSectionVal ) ; if ( Status ) BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>it\\'s<S2SV_blank>priority<S2SV_blank>Highest.<S2SV_blank>Status<S2SV_blank>%d\" , Status ) ; up ( & Adapter -> NVMRdmWrmLock ) ; } break ; case IOCTL_BCM_IDENTIFY_ACTIVE_SECTION : { Adapter -> bAllDSDWriteAllow = FALSE ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_IDENTIFY_ACTIVE_SECTION<S2SV_blank>called\" ) ; Status = STATUS_SUCCESS ; } break ; case IOCTL_BCM_COPY_SECTION : { struct bcm_flash2x_copy_section sCopySectStrut = { 0 } ; Status = STATUS_SUCCESS ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_COPY_SECTION<S2SV_blank><S2SV_blank>Called\" ) ; Adapter -> bAllDSDWriteAllow = FALSE ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>IOCTL<S2SV_blank>BUFFER<S2SV_blank>failed<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; return - EFAULT ; } Status = copy_from_user ( & sCopySectStrut , IoBuffer . InputBuffer , sizeof ( struct bcm_flash2x_copy_section ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>Copy_Section_Struct<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; return - EFAULT ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Source<S2SV_blank>SEction<S2SV_blank>:%x\" , sCopySectStrut . SrcSection ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Destination<S2SV_blank>SEction<S2SV_blank>:%x\" , sCopySectStrut . DstSection ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"offset<S2SV_blank>:%x\" , sCopySectStrut . offset ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"NOB<S2SV_blank>:%x\" , sCopySectStrut . numOfBytes ) ; if ( IsSectionExistInFlash ( Adapter , sCopySectStrut . SrcSection ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Source<S2SV_blank>Section<%x><S2SV_blank>does<S2SV_blank>not<S2SV_blank>exixt<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>\" , sCopySectStrut . SrcSection ) ; return - EINVAL ; } if ( IsSectionExistInFlash ( Adapter , sCopySectStrut . DstSection ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Destinatio<S2SV_blank>Section<%x><S2SV_blank>does<S2SV_blank>not<S2SV_blank>exixt<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>\" , sCopySectStrut . DstSection ) ; return - EINVAL ; } if ( sCopySectStrut . SrcSection == sCopySectStrut . DstSection ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Source<S2SV_blank>and<S2SV_blank>Destination<S2SV_blank>section<S2SV_blank>should<S2SV_blank>be<S2SV_blank>different\" ) ; return - EINVAL ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return - EACCES ; } if ( sCopySectStrut . SrcSection == ISO_IMAGE1 || sCopySectStrut . SrcSection == ISO_IMAGE2 ) { if ( IsNonCDLessDevice ( Adapter ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>is<S2SV_blank>Non-CDLess<S2SV_blank>hence<S2SV_blank>won\\'t<S2SV_blank>have<S2SV_blank>ISO<S2SV_blank>!!\" ) ; Status = - EINVAL ; } else if ( sCopySectStrut . numOfBytes == 0 ) { Status = BcmCopyISO ( Adapter , sCopySectStrut ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Partial<S2SV_blank>Copy<S2SV_blank>of<S2SV_blank>ISO<S2SV_blank>section<S2SV_blank>is<S2SV_blank>not<S2SV_blank>Allowed..\" ) ; Status = STATUS_FAILURE ; } up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } Status = BcmCopySection ( Adapter , sCopySectStrut . SrcSection , sCopySectStrut . DstSection , sCopySectStrut . offset , sCopySectStrut . numOfBytes ) ; up ( & Adapter -> NVMRdmWrmLock ) ; } break ; case IOCTL_BCM_GET_FLASH_CS_INFO : { Status = STATUS_SUCCESS ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"<S2SV_blank>IOCTL_BCM_GET_FLASH_CS_INFO<S2SV_blank>Called\" ) ; Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>IOCTL<S2SV_blank>BUFFER<S2SV_blank>failed\" ) ; return - EFAULT ; } if ( Adapter -> eNVMType != NVM_FLASH ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Connected<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>flash\" ) ; Status = - EINVAL ; break ; } if ( IsFlash2x ( Adapter ) == TRUE ) { if ( IoBuffer . OutputLength < sizeof ( struct bcm_flash2x_cs_info ) ) return - EINVAL ; if ( copy_to_user ( IoBuffer . OutputBuffer , Adapter -> psFlash2xCSInfo , sizeof ( struct bcm_flash2x_cs_info ) ) ) return - EFAULT ; } else { if ( IoBuffer . OutputLength < sizeof ( struct bcm_flash_cs_info ) ) return - EINVAL ; if ( copy_to_user ( IoBuffer . OutputBuffer , Adapter -> psFlashCSInfo , sizeof ( struct bcm_flash_cs_info ) ) ) return - EFAULT ; } } break ; case IOCTL_BCM_SELECT_DSD : { UINT SectOfset = 0 ; enum bcm_flash2x_section_val eFlash2xSectionVal ; eFlash2xSectionVal = NO_SECTION_VAL ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_SELECT_DSD<S2SV_blank>Called\" ) ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>IOCTL<S2SV_blank>BUFFER<S2SV_blank>failed\" ) ; return - EFAULT ; } Status = copy_from_user ( & eFlash2xSectionVal , IoBuffer . InputBuffer , sizeof ( INT ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>flash<S2SV_blank>section<S2SV_blank>val<S2SV_blank>failed\" ) ; return - EFAULT ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Read<S2SV_blank>Section<S2SV_blank>:%d\" , eFlash2xSectionVal ) ; if ( ( eFlash2xSectionVal != DSD0 ) && ( eFlash2xSectionVal != DSD1 ) && ( eFlash2xSectionVal != DSD2 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Passed<S2SV_blank>section<%x><S2SV_blank>is<S2SV_blank>not<S2SV_blank>DSD<S2SV_blank>section\" , eFlash2xSectionVal ) ; return STATUS_FAILURE ; } SectOfset = BcmGetSectionValStartOffset ( Adapter , eFlash2xSectionVal ) ; if ( SectOfset == INVALID_OFFSET ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Provided<S2SV_blank>Section<S2SV_blank>val<S2SV_blank><%d><S2SV_blank>does<S2SV_blank>not<S2SV_blank>exixt<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>2.x\" , eFlash2xSectionVal ) ; return - EINVAL ; } Adapter -> bAllDSDWriteAllow = TRUE ; Adapter -> ulFlashCalStart = SectOfset ; Adapter -> eActiveDSD = eFlash2xSectionVal ; } Status = STATUS_SUCCESS ; break ; case IOCTL_BCM_NVM_RAW_READ : { struct bcm_nvm_readwrite stNVMRead ; INT NOB ; INT BuffSize ; INT ReadOffset = 0 ; UINT ReadBytes = 0 ; PUCHAR pReadBuff ; void __user * OutPutBuff ; if ( Adapter -> eNVMType != NVM_FLASH ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"NVM<S2SV_blank>TYPE<S2SV_blank>is<S2SV_blank>not<S2SV_blank>Flash\" ) ; return - EINVAL ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"copy_from_user<S2SV_blank>1<S2SV_blank>failed\\\\n\" ) ; return - EFAULT ; } if ( copy_from_user ( & stNVMRead , IoBuffer . OutputBuffer , sizeof ( struct bcm_nvm_readwrite ) ) ) return - EFAULT ; NOB = stNVMRead . uiNumBytes ; if ( NOB > DEFAULT_BUFF_SIZE ) BuffSize = DEFAULT_BUFF_SIZE ; else BuffSize = NOB ; ReadOffset = stNVMRead . uiOffset ; OutPutBuff = stNVMRead . pBuffer ; pReadBuff = kzalloc ( BuffSize , GFP_KERNEL ) ; if ( pReadBuff == NULL ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Memory<S2SV_blank>allocation<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>Flash<S2SV_blank>2.x<S2SV_blank>Read<S2SV_blank>Structure\" ) ; Status = - ENOMEM ; break ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; kfree ( pReadBuff ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return - EACCES ; } Adapter -> bFlashRawRead = TRUE ; while ( NOB ) { if ( NOB > DEFAULT_BUFF_SIZE ) ReadBytes = DEFAULT_BUFF_SIZE ; else ReadBytes = NOB ; Status = BeceemNVMRead ( Adapter , ( PUINT ) pReadBuff , ReadOffset , ReadBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>2x<S2SV_blank>read<S2SV_blank>err<S2SV_blank>with<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; break ; } BCM_DEBUG_PRINT_BUFFER ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , pReadBuff , ReadBytes ) ; Status = copy_to_user ( OutPutBuff , pReadBuff , ReadBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>to<S2SV_blank>use<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>status<S2SV_blank>:%d\" , Status ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; return - EFAULT ; } NOB = NOB - ReadBytes ; if ( NOB ) { ReadOffset = ReadOffset + ReadBytes ; OutPutBuff = OutPutBuff + ReadBytes ; } } Adapter -> bFlashRawRead = FALSE ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; break ; } case IOCTL_BCM_CNTRLMSG_MASK : { ULONG RxCntrlMsgBitMask = 0 ; Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"copy<S2SV_blank>of<S2SV_blank>Ioctl<S2SV_blank>buffer<S2SV_blank>is<S2SV_blank>failed<S2SV_blank>from<S2SV_blank>user<S2SV_blank>space\" ) ; return - EFAULT ; } if ( IoBuffer . InputLength != sizeof ( unsigned long ) ) { Status = - EINVAL ; break ; } Status = copy_from_user ( & RxCntrlMsgBitMask , IoBuffer . InputBuffer , IoBuffer . InputLength ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"copy<S2SV_blank>of<S2SV_blank>control<S2SV_blank>bit<S2SV_blank>mask<S2SV_blank>failed<S2SV_blank>from<S2SV_blank>user<S2SV_blank>space\" ) ; return - EFAULT ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\n<S2SV_blank>Got<S2SV_blank>user<S2SV_blank>defined<S2SV_blank>cntrl<S2SV_blank>msg<S2SV_blank>bit<S2SV_blank>mask<S2SV_blank>:%lx\" , RxCntrlMsgBitMask ) ; pTarang -> RxCntrlMsgBitMask = RxCntrlMsgBitMask ; } break ; case IOCTL_BCM_GET_DEVICE_DRIVER_INFO : { struct bcm_driver_info DevInfo ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Called<S2SV_blank>IOCTL_BCM_GET_DEVICE_DRIVER_INFO\\\\n\" ) ; <S2SV_StartBug> DevInfo . MaxRDMBufferSize = BUFFER_4K ; <S2SV_EndBug> DevInfo . u32DSDStartOffset = EEPROM_CALPARAM_START ; DevInfo . u32RxAlignmentCorrection = 0 ; DevInfo . u32NVMType = Adapter -> eNVMType ; DevInfo . u32InterfaceType = BCM_USB ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength < sizeof ( DevInfo ) ) return - EINVAL ; if ( copy_to_user ( IoBuffer . OutputBuffer , & DevInfo , sizeof ( DevInfo ) ) ) return - EFAULT ; } break ; case IOCTL_BCM_TIME_SINCE_NET_ENTRY : { struct bcm_time_elapsed stTimeElapsedSinceNetEntry = { 0 } ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_TIME_SINCE_NET_ENTRY<S2SV_blank>called\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength < sizeof ( struct bcm_time_elapsed ) ) return - EINVAL ; stTimeElapsedSinceNetEntry . ul64TimeElapsedSinceNetEntry = get_seconds ( ) - Adapter -> liTimeSinceLastNetEntry ; if ( copy_to_user ( IoBuffer . OutputBuffer , & stTimeElapsedSinceNetEntry , sizeof ( struct bcm_time_elapsed ) ) ) return - EFAULT ; } break ; case IOCTL_CLOSE_NOTIFICATION : BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_CLOSE_NOTIFICATION\" ) ; break ; default : pr_info ( DRV_NAME \":<S2SV_blank>unknown<S2SV_blank>ioctl<S2SV_blank>cmd=%#x\\\\n\" , cmd ) ; Status = STATUS_FAILURE ; break ; } return Status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Called<S2SV_blank>IOCTL_BCM_GET_DEVICE_DRIVER_INFO\\\\n\" ) ; memset ( & DevInfo , 0 , sizeof ( DevInfo ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 unsigned char * ssl_add_serverhello_tlsext ( SSL * s , unsigned char * buf , unsigned char * limit , int * al ) { int extdatalen = 0 ; unsigned char * orig = buf ; unsigned char * ret = buf ; # ifndef OPENSSL_NO_NEXTPROTONEG int next_proto_neg_seen ; # endif # ifndef OPENSSL_NO_EC unsigned long alg_k = s -> s3 -> tmp . new_cipher -> algorithm_mkey ; unsigned long alg_a = s -> s3 -> tmp . new_cipher -> algorithm_auth ; int using_ecc = ( alg_k & SSL_kECDHE ) || ( alg_a & SSL_aECDSA ) ; using_ecc = using_ecc && ( s -> session -> tlsext_ecpointformatlist != NULL ) ; # endif ret += 2 ; if ( ret >= limit ) return NULL ; if ( s -> s3 -> send_connection_binding ) { int el ; if ( ! ssl_add_serverhello_renegotiate_ext ( s , 0 , & el , 0 ) ) { SSLerr ( SSL_F_SSL_ADD_SERVERHELLO_TLSEXT , ERR_R_INTERNAL_ERROR ) ; return NULL ; } if ( CHECKLEN ( ret , 4 + el , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_renegotiate , ret ) ; s2n ( el , ret ) ; if ( ! ssl_add_serverhello_renegotiate_ext ( s , ret , & el , el ) ) { SSLerr ( SSL_F_SSL_ADD_SERVERHELLO_TLSEXT , ERR_R_INTERNAL_ERROR ) ; return NULL ; } ret += el ; } if ( s -> version == SSL3_VERSION ) goto done ; if ( ! s -> hit && s -> servername_done == 1 && s -> session -> tlsext_hostname != NULL ) { if ( CHECKLEN ( ret , 4 , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_server_name , ret ) ; s2n ( 0 , ret ) ; } # ifndef OPENSSL_NO_EC if ( using_ecc ) { const unsigned char * plist ; size_t plistlen ; tls1_get_formatlist ( s , & plist , & plistlen ) ; if ( plistlen > 255 ) { SSLerr ( SSL_F_SSL_ADD_SERVERHELLO_TLSEXT , ERR_R_INTERNAL_ERROR ) ; return NULL ; } if ( CHECKLEN ( ret , 5 + plistlen , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_ec_point_formats , ret ) ; s2n ( plistlen + 1 , ret ) ; * ( ret ++ ) = ( unsigned char ) plistlen ; memcpy ( ret , plist , plistlen ) ; ret += plistlen ; } # endif if ( s -> tlsext_ticket_expected && tls_use_ticket ( s ) ) { if ( CHECKLEN ( ret , 4 , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_session_ticket , ret ) ; s2n ( 0 , ret ) ; } else { s -> tlsext_ticket_expected = 0 ; } if ( s -> tlsext_status_expected ) { if ( CHECKLEN ( ret , 4 , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_status_request , ret ) ; s2n ( 0 , ret ) ; } # ifndef OPENSSL_NO_SRTP if ( SSL_IS_DTLS ( s ) && s -> srtp_profile ) { int el ; if ( ssl_add_serverhello_use_srtp_ext ( s , 0 , & el , 0 ) ) { SSLerr ( SSL_F_SSL_ADD_SERVERHELLO_TLSEXT , ERR_R_INTERNAL_ERROR ) ; return NULL ; } if ( CHECKLEN ( ret , 4 + el , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_use_srtp , ret ) ; s2n ( el , ret ) ; if ( ssl_add_serverhello_use_srtp_ext ( s , ret , & el , el ) ) { SSLerr ( SSL_F_SSL_ADD_SERVERHELLO_TLSEXT , ERR_R_INTERNAL_ERROR ) ; return NULL ; } ret += el ; } # endif if ( ( ( s -> s3 -> tmp . new_cipher -> id & 0xFFFF ) == 0x80 || ( s -> s3 -> tmp . new_cipher -> id & 0xFFFF ) == 0x81 ) && ( SSL_get_options ( s ) & SSL_OP_CRYPTOPRO_TLSEXT_BUG ) ) { const unsigned char cryptopro_ext [ 36 ] = { 0xfd , 0xe8 , 0x00 , 0x20 , 0x30 , 0x1e , 0x30 , 0x08 , 0x06 , 0x06 , 0x2a , 0x85 , 0x03 , 0x02 , 0x02 , 0x09 , 0x30 , 0x08 , 0x06 , 0x06 , 0x2a , 0x85 , 0x03 , 0x02 , 0x02 , 0x16 , 0x30 , 0x08 , 0x06 , 0x06 , 0x2a , 0x85 , 0x03 , 0x02 , 0x02 , 0x17 } ; if ( CHECKLEN ( ret , sizeof ( cryptopro_ext ) , limit ) ) return NULL ; memcpy ( ret , cryptopro_ext , sizeof ( cryptopro_ext ) ) ; ret += sizeof ( cryptopro_ext ) ; } # ifndef OPENSSL_NO_HEARTBEATS if ( SSL_IS_DTLS ( s ) && ( s -> tlsext_heartbeat & SSL_DTLSEXT_HB_ENABLED ) ) { if ( CHECKLEN ( ret , 5 , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_heartbeat , ret ) ; s2n ( 1 , ret ) ; if ( s -> tlsext_heartbeat & SSL_DTLSEXT_HB_DONT_RECV_REQUESTS ) * ( ret ++ ) = SSL_DTLSEXT_HB_DONT_SEND_REQUESTS ; else * ( ret ++ ) = SSL_DTLSEXT_HB_ENABLED ; } # endif # ifndef OPENSSL_NO_NEXTPROTONEG next_proto_neg_seen = s -> s3 -> next_proto_neg_seen ; s -> s3 -> next_proto_neg_seen = 0 ; if ( next_proto_neg_seen && s -> ctx -> next_protos_advertised_cb ) { const unsigned char * npa ; unsigned int npalen ; int r ; r = s -> ctx -> next_protos_advertised_cb ( s , & npa , & npalen , s -> ctx -> next_protos_advertised_cb_arg ) ; if ( r == SSL_TLSEXT_ERR_OK ) { if ( CHECKLEN ( ret , 4 + npalen , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_next_proto_neg , ret ) ; s2n ( npalen , ret ) ; memcpy ( ret , npa , npalen ) ; ret += npalen ; s -> s3 -> next_proto_neg_seen = 1 ; } } # endif if ( ! custom_ext_add ( s , 1 , & ret , limit , al ) ) return NULL ; <S2SV_StartBug> if ( s -> s3 -> flags & TLS1_FLAGS_ENCRYPT_THEN_MAC ) { <S2SV_EndBug> if ( SSL_IS_DTLS ( s ) || s -> s3 -> tmp . new_cipher -> algorithm_mac == SSL_AEAD || s -> s3 -> tmp . new_cipher -> algorithm_enc == SSL_RC4 || s -> s3 -> tmp . new_cipher -> algorithm_enc == SSL_eGOST2814789CNT || s -> s3 -> tmp . new_cipher -> algorithm_enc == SSL_eGOST2814789CNT12 ) <S2SV_StartBug> s -> s3 -> flags &= ~ TLS1_FLAGS_ENCRYPT_THEN_MAC ; <S2SV_EndBug> else { if ( CHECKLEN ( ret , 4 , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_encrypt_then_mac , ret ) ; s2n ( 0 , ret ) ; } } if ( s -> s3 -> flags & TLS1_FLAGS_RECEIVED_EXTMS ) { if ( CHECKLEN ( ret , 4 , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_extended_master_secret , ret ) ; s2n ( 0 , ret ) ; } if ( s -> s3 -> alpn_selected != NULL ) { const unsigned char * selected = s -> s3 -> alpn_selected ; size_t len = s -> s3 -> alpn_selected_len ; if ( CHECKLEN ( ret , 7 + len , limit ) ) return NULL ; s2n ( TLSEXT_TYPE_application_layer_protocol_negotiation , ret ) ; s2n ( 3 + len , ret ) ; s2n ( 1 + len , ret ) ; * ret ++ = len ; memcpy ( ret , selected , len ) ; ret += len ; } done : if ( ( extdatalen = ret - orig - 2 ) == 0 ) return orig ; s2n ( extdatalen , orig ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( s -> tlsext_use_etm <S2SV_ModEnd> ) { if <S2SV_ModStart> ) s -> tlsext_use_etm = 0 <S2SV_ModEnd> ; else {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static unsigned int block_variance ( VP9_COMP * cpi , MACROBLOCK * x , BLOCK_SIZE bs ) { MACROBLOCKD * xd = & x -> e_mbd ; unsigned int var , sse ; int right_overflow = ( xd -> mb_to_right_edge < 0 ) ? ( ( - xd -> mb_to_right_edge ) >> 3 ) : 0 ; int bottom_overflow = ( xd -> mb_to_bottom_edge < 0 ) ? ( ( - xd -> mb_to_bottom_edge ) >> 3 ) : 0 ; if ( right_overflow || bottom_overflow ) { const int bw = 8 * num_8x8_blocks_wide_lookup [ bs ] - right_overflow ; const int bh = 8 * num_8x8_blocks_high_lookup [ bs ] - bottom_overflow ; int avg ; <S2SV_StartBug> variance ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , <S2SV_EndBug> <S2SV_StartBug> vp9_64_zeros , 0 , bw , bh , & sse , & avg ) ; <S2SV_EndBug> <S2SV_StartBug> var = sse - ( ( ( int64_t ) avg * avg ) / ( bw * bh ) ) ; <S2SV_EndBug> return ( 256 * var ) / ( bw * bh ) ; } else { <S2SV_StartBug> var = cpi -> fn_ptr [ bs ] . vf ( x -> plane [ 0 ] . src . buf , <S2SV_EndBug> x -> plane [ 0 ] . src . stride , <S2SV_StartBug> vp9_64_zeros , 0 , & sse ) ; <S2SV_EndBug> return ( 256 * var ) >> num_pels_log2_lookup [ bs ] ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int avg ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { aq_highbd_8_variance <S2SV_ModEnd> ( x -> <S2SV_ModStart> . stride , CONVERT_TO_BYTEPTR ( vp9_highbd_64_zeros ) , 0 , bw , bh , & sse , & avg ) ; sse >>= 2 * ( xd -> bd - 8 ) ; avg >>= ( xd -> bd - 8 ) ; } else { aq_variance ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , <S2SV_ModStart> avg ) ; } # else aq_variance ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , vp9_64_zeros , 0 , bw , bh , & sse , & avg ) ; # endif <S2SV_ModStart> } else { # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { <S2SV_ModStart> . stride , CONVERT_TO_BYTEPTR ( vp9_highbd_64_zeros ) , 0 , & sse ) ; } else { var = cpi -> fn_ptr [ bs ] . vf ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , <S2SV_ModStart> sse ) ; } # else var = cpi -> fn_ptr [ bs ] . vf ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , vp9_64_zeros , 0 , & sse ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_stmt ( void * _o ) { stmt_ty o = ( stmt_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } switch ( o -> kind ) { case FunctionDef_kind : result = PyType_GenericNew ( FunctionDef_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . FunctionDef . name ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_name , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_arguments ( o -> v . FunctionDef . args ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_args , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . FunctionDef . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . FunctionDef . decorator_list , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_decorator_list , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . FunctionDef . returns ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_returns , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> v . FunctionDef . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case AsyncFunctionDef_kind : result = PyType_GenericNew ( AsyncFunctionDef_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . AsyncFunctionDef . name ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_name , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_arguments ( o -> v . AsyncFunctionDef . args ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_args , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncFunctionDef . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncFunctionDef . decorator_list , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_decorator_list , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AsyncFunctionDef . returns ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_returns , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> v . AsyncFunctionDef . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case ClassDef_kind : result = PyType_GenericNew ( ClassDef_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . ClassDef . name ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_name , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ClassDef . bases , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_bases , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ClassDef . keywords , ast2obj_keyword ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_keywords , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ClassDef . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ClassDef . decorator_list , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_decorator_list , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Return_kind : result = PyType_GenericNew ( Return_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Return . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Delete_kind : result = PyType_GenericNew ( Delete_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Delete . targets , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_targets , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Assign_kind : result = PyType_GenericNew ( Assign_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Assign . targets , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_targets , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Assign . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> v . Assign . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case AugAssign_kind : result = PyType_GenericNew ( AugAssign_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . AugAssign . target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_operator ( o -> v . AugAssign . op ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_op , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AugAssign . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case AnnAssign_kind : result = PyType_GenericNew ( AnnAssign_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . AnnAssign . target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AnnAssign . annotation ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_annotation , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AnnAssign . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> v . AnnAssign . simple ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_simple , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case For_kind : result = PyType_GenericNew ( For_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . For . target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . For . iter ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_iter , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . For . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . For . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> v . For . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case AsyncFor_kind : result = PyType_GenericNew ( AsyncFor_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . AsyncFor . target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . AsyncFor . iter ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_iter , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncFor . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncFor . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> v . AsyncFor . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case While_kind : result = PyType_GenericNew ( While_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . While . test ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_test , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . While . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . While . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case If_kind : result = PyType_GenericNew ( If_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . If . test ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_test , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . If . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . If . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case With_kind : result = PyType_GenericNew ( With_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . With . items , ast2obj_withitem ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_items , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . With . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> v . With . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case AsyncWith_kind : result = PyType_GenericNew ( AsyncWith_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . AsyncWith . items , ast2obj_withitem ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_items , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . AsyncWith . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> v . AsyncWith . type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Raise_kind : result = PyType_GenericNew ( Raise_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Raise . exc ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_exc , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Raise . cause ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_cause , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Try_kind : result = PyType_GenericNew ( Try_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Try . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Try . handlers , ast2obj_excepthandler ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_handlers , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Try . orelse , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Try . finalbody , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_finalbody , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Assert_kind : result = PyType_GenericNew ( Assert_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Assert . test ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_test , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Assert . msg ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_msg , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Import_kind : result = PyType_GenericNew ( Import_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Import . names , ast2obj_alias ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_names , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case ImportFrom_kind : result = PyType_GenericNew ( ImportFrom_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . ImportFrom . module ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_module , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ImportFrom . names , ast2obj_alias ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_names , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> v . ImportFrom . level ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_level , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Global_kind : result = PyType_GenericNew ( Global_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Global . names , ast2obj_identifier ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_names , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Nonlocal_kind : result = PyType_GenericNew ( Nonlocal_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Nonlocal . names , ast2obj_identifier ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_names , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Expr_kind : result = PyType_GenericNew ( Expr_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Expr . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Pass_kind : result = PyType_GenericNew ( Pass_type , NULL , NULL ) ; if ( ! result ) goto failed ; break ; case Break_kind : result = PyType_GenericNew ( Break_type , NULL , NULL ) ; if ( ! result ) goto failed ; break ; case Continue_kind : result = PyType_GenericNew ( Continue_type , NULL , NULL ) ; if ( ! result ) goto failed ; break ; } value = ast2obj_int ( o -> lineno ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_lineno , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> col_offset ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_col_offset , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } switch\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12168\n\n```\nCWE-617 static bool access_pmu_evcntr ( struct kvm_vcpu * vcpu , struct sys_reg_params * p , const struct sys_reg_desc * r ) { u64 idx ; if ( ! kvm_arm_pmu_v3_ready ( vcpu ) ) return trap_raz_wi ( vcpu , p , r ) ; if ( r -> CRn == 9 && r -> CRm == 13 ) { if ( r -> Op2 == 2 ) { if ( pmu_access_event_counter_el0_disabled ( vcpu ) ) return false ; idx = vcpu_sys_reg ( vcpu , PMSELR_EL0 ) & ARMV8_PMU_COUNTER_MASK ; } else if ( r -> Op2 == 0 ) { if ( pmu_access_cycle_counter_el0_disabled ( vcpu ) ) return false ; idx = ARMV8_PMU_CYCLE_IDX ; } else { <S2SV_StartBug> BUG ( ) ; <S2SV_EndBug> } } else if ( r -> CRn == 14 && ( r -> CRm & 12 ) == 8 ) { if ( pmu_access_event_counter_el0_disabled ( vcpu ) ) return false ; idx = ( ( r -> CRm & 3 ) << 3 ) | ( r -> Op2 & 7 ) ; } else { <S2SV_StartBug> BUG ( ) ; <S2SV_EndBug> } if ( ! pmu_counter_idx_valid ( vcpu , idx ) ) return false ; if ( p -> is_write ) { if ( pmu_access_el0_disabled ( vcpu ) ) return false ; kvm_pmu_set_counter_value ( vcpu , idx , p -> regval ) ; } else { p -> regval = kvm_pmu_get_counter_value ( vcpu , idx ) ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { return false ; } } else if ( r -> CRn == 0 && r -> CRm == 9 ) { if ( pmu_access_event_counter_el0_disabled ( vcpu ) ) return false ; idx = ARMV8_PMU_CYCLE_IDX ; <S2SV_ModEnd> } else if <S2SV_ModStart> } else { return false <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4796\n\n```\nCWE-119 void color_cmyk_to_rgb ( opj_image_t * image ) { float C , M , Y , K ; float sC , sM , sY , sK ; unsigned int w , h , max , i ; w = image -> comps [ 0 ] . w ; h = image -> comps [ 0 ] . h ; <S2SV_StartBug> if ( image -> numcomps < 4 ) return ; <S2SV_EndBug> max = w * h ; sC = 1.0F / ( float ) ( ( 1 << image -> comps [ 0 ] . prec ) - 1 ) ; sM = 1.0F / ( float ) ( ( 1 << image -> comps [ 1 ] . prec ) - 1 ) ; sY = 1.0F / ( float ) ( ( 1 << image -> comps [ 2 ] . prec ) - 1 ) ; sK = 1.0F / ( float ) ( ( 1 << image -> comps [ 3 ] . prec ) - 1 ) ; for ( i = 0 ; i < max ; ++ i ) { C = ( float ) ( image -> comps [ 0 ] . data [ i ] ) * sC ; M = ( float ) ( image -> comps [ 1 ] . data [ i ] ) * sM ; Y = ( float ) ( image -> comps [ 2 ] . data [ i ] ) * sY ; K = ( float ) ( image -> comps [ 3 ] . data [ i ] ) * sK ; C = 1.0F - C ; M = 1.0F - M ; Y = 1.0F - Y ; K = 1.0F - K ; image -> comps [ 0 ] . data [ i ] = ( int ) ( 255.0F * C * K ) ; image -> comps [ 1 ] . data [ i ] = ( int ) ( 255.0F * M * K ) ; image -> comps [ 2 ] . data [ i ] = ( int ) ( 255.0F * Y * K ) ; } free ( image -> comps [ 3 ] . data ) ; image -> comps [ 3 ] . data = NULL ; image -> comps [ 0 ] . prec = 8 ; image -> comps [ 1 ] . prec = 8 ; image -> comps [ 2 ] . prec = 8 ; image -> numcomps -= 1 ; image -> color_space = OPJ_CLRSPC_SRGB ; for ( i = 3 ; i < image -> numcomps ; ++ i ) { memcpy ( & ( image -> comps [ i ] ) , & ( image -> comps [ i + 1 ] ) , sizeof ( image -> comps [ i ] ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( <S2SV_ModStart> < 4 ) || ( image -> comps [ 0 ] . dx != image -> comps [ 1 ] . dx ) || ( image -> comps [ 0 ] . dx != image -> comps [ 2 ] . dx ) || ( image -> comps [ 0 ] . dx != image -> comps [ 3 ] . dx ) || ( image -> comps [ 0 ] . dy != image -> comps [ 1 ] . dy ) || ( image -> comps [ 0 ] . dy != image -> comps [ 2 ] . dy ) || ( image -> comps [ 0 ] . dy != image -> comps [ 3 ] . dy ) ) { fprintf ( stderr , \"%s:%d:color_cmyk_to_rgb\\\\n\\\\tCAN<S2SV_blank>NOT<S2SV_blank>CONVERT\\\\n\" , __FILE__ , __LINE__ ) ; return ; } <S2SV_ModEnd> max = w\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6074\n\n```\nCWE-415 int dccp_rcv_state_process ( struct sock * sk , struct sk_buff * skb , struct dccp_hdr * dh , unsigned int len ) { struct dccp_sock * dp = dccp_sk ( sk ) ; struct dccp_skb_cb * dcb = DCCP_SKB_CB ( skb ) ; const int old_state = sk -> sk_state ; int queued = 0 ; if ( sk -> sk_state == DCCP_LISTEN ) { if ( dh -> dccph_type == DCCP_PKT_REQUEST ) { if ( inet_csk ( sk ) -> icsk_af_ops -> conn_request ( sk , skb ) < 0 ) return 1 ; <S2SV_StartBug> goto discard ; <S2SV_EndBug> } if ( dh -> dccph_type == DCCP_PKT_RESET ) goto discard ; dcb -> dccpd_reset_code = DCCP_RESET_CODE_NO_CONNECTION ; return 1 ; } else if ( sk -> sk_state == DCCP_CLOSED ) { dcb -> dccpd_reset_code = DCCP_RESET_CODE_NO_CONNECTION ; return 1 ; } if ( sk -> sk_state != DCCP_REQUESTING && dccp_check_seqno ( sk , skb ) ) goto discard ; if ( ( dp -> dccps_role != DCCP_ROLE_CLIENT && dh -> dccph_type == DCCP_PKT_RESPONSE ) || ( dp -> dccps_role == DCCP_ROLE_CLIENT && dh -> dccph_type == DCCP_PKT_REQUEST ) || ( sk -> sk_state == DCCP_RESPOND && dh -> dccph_type == DCCP_PKT_DATA ) ) { dccp_send_sync ( sk , dcb -> dccpd_seq , DCCP_PKT_SYNC ) ; goto discard ; } if ( dccp_parse_options ( sk , NULL , skb ) ) return 1 ; if ( dh -> dccph_type == DCCP_PKT_RESET ) { dccp_rcv_reset ( sk , skb ) ; return 0 ; } else if ( dh -> dccph_type == DCCP_PKT_CLOSEREQ ) { if ( dccp_rcv_closereq ( sk , skb ) ) return 0 ; goto discard ; } else if ( dh -> dccph_type == DCCP_PKT_CLOSE ) { if ( dccp_rcv_close ( sk , skb ) ) return 0 ; goto discard ; } switch ( sk -> sk_state ) { case DCCP_REQUESTING : queued = dccp_rcv_request_sent_state_process ( sk , skb , dh , len ) ; if ( queued >= 0 ) return queued ; __kfree_skb ( skb ) ; return 0 ; case DCCP_PARTOPEN : dccp_handle_ackvec_processing ( sk , skb ) ; dccp_deliver_input_to_ccids ( sk , skb ) ; case DCCP_RESPOND : queued = dccp_rcv_respond_partopen_state_process ( sk , skb , dh , len ) ; break ; } if ( dh -> dccph_type == DCCP_PKT_ACK || dh -> dccph_type == DCCP_PKT_DATAACK ) { switch ( old_state ) { case DCCP_PARTOPEN : sk -> sk_state_change ( sk ) ; sk_wake_async ( sk , SOCK_WAKE_IO , POLL_OUT ) ; break ; } } else if ( unlikely ( dh -> dccph_type == DCCP_PKT_SYNC ) ) { dccp_send_sync ( sk , dcb -> dccpd_seq , DCCP_PKT_SYNCACK ) ; goto discard ; } if ( ! queued ) { discard : __kfree_skb ( skb ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 1 ; consume_skb ( skb ) ; return 0 <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14174\n\n```\nCWE-834 static MagickBooleanType ReadPSDLayersInternal ( Image * image , const ImageInfo * image_info , const PSDInfo * psd_info , const MagickBooleanType skip_layers , ExceptionInfo * exception ) { char type [ 4 ] ; LayerInfo * layer_info ; MagickSizeType size ; MagickBooleanType status ; register ssize_t i ; ssize_t count , j , number_layers ; size = GetPSDSize ( psd_info , image ) ; if ( size == 0 ) { ( void ) ReadBlobLong ( image ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; status = MagickFalse ; if ( ( count == 0 ) || ( LocaleNCompare ( type , \"8BIM\" , 4 ) != 0 ) ) return ( MagickTrue ) ; else { count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; if ( ( count != 0 ) && ( LocaleNCompare ( type , \"Lr16\" , 4 ) == 0 ) ) size = GetPSDSize ( psd_info , image ) ; else return ( MagickTrue ) ; } } status = MagickTrue ; if ( size != 0 ) { layer_info = ( LayerInfo * ) NULL ; number_layers = ( short ) ReadBlobShort ( image ) ; if ( number_layers < 0 ) { number_layers = MagickAbsoluteValue ( number_layers ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>negative<S2SV_blank>layer<S2SV_blank>count<S2SV_blank>corrected<S2SV_blank>for\" ) ; image -> alpha_trait = BlendPixelTrait ; } if ( skip_layers != MagickFalse ) return ( MagickTrue ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>image<S2SV_blank>contains<S2SV_blank>%.20g<S2SV_blank>layers\" , ( double ) number_layers ) ; if ( number_layers == 0 ) ThrowBinaryException ( CorruptImageError , \"InvalidNumberOfLayers\" , image -> filename ) ; layer_info = ( LayerInfo * ) AcquireQuantumMemory ( ( size_t ) number_layers , sizeof ( * layer_info ) ) ; if ( layer_info == ( LayerInfo * ) NULL ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>allocation<S2SV_blank>of<S2SV_blank>LayerInfo<S2SV_blank>failed\" ) ; ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; } ( void ) ResetMagickMemory ( layer_info , 0 , ( size_t ) number_layers * sizeof ( * layer_info ) ) ; for ( i = 0 ; i < number_layers ; i ++ ) { ssize_t x , y ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>reading<S2SV_blank>layer<S2SV_blank>#%.20g\" , ( double ) i + 1 ) ; layer_info [ i ] . page . y = ReadBlobSignedLong ( image ) ; layer_info [ i ] . page . x = ReadBlobSignedLong ( image ) ; y = ReadBlobSignedLong ( image ) ; x = ReadBlobSignedLong ( image ) ; layer_info [ i ] . page . width = ( size_t ) ( x - layer_info [ i ] . page . x ) ; layer_info [ i ] . page . height = ( size_t ) ( y - layer_info [ i ] . page . y ) ; layer_info [ i ] . channels = ReadBlobShort ( image ) ; if ( layer_info [ i ] . channels > MaxPSDChannels ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"MaximumChannelsExceeded\" , image -> filename ) ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>offset(%.20g,%.20g),<S2SV_blank>size(%.20g,%.20g),<S2SV_blank>channels=%.20g\" , ( double ) layer_info [ i ] . page . x , ( double ) layer_info [ i ] . page . y , ( double ) layer_info [ i ] . page . height , ( double ) layer_info [ i ] . page . width , ( double ) layer_info [ i ] . channels ) ; for ( j = 0 ; j < ( ssize_t ) layer_info [ i ] . channels ; j ++ ) { layer_info [ i ] . channel_info [ j ] . type = ( short ) ReadBlobShort ( image ) ; layer_info [ i ] . channel_info [ j ] . size = ( size_t ) GetPSDSize ( psd_info , image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>channel[%.20g]:<S2SV_blank>type=%.20g,<S2SV_blank>size=%.20g\" , ( double ) j , ( double ) layer_info [ i ] . channel_info [ j ] . type , ( double ) layer_info [ i ] . channel_info [ j ] . size ) ; } count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; if ( ( count == 0 ) || ( LocaleNCompare ( type , \"8BIM\" , 4 ) != 0 ) ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>layer<S2SV_blank>type<S2SV_blank>was<S2SV_blank>%.4s<S2SV_blank>instead<S2SV_blank>of<S2SV_blank>8BIM\" , type ) ; layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"ImproperImageHeader\" , image -> filename ) ; } count = ReadBlob ( image , 4 , ( unsigned char * ) layer_info [ i ] . blendkey ) ; ReversePSDString ( image , layer_info [ i ] . blendkey , 4 ) ; layer_info [ i ] . opacity = ( Quantum ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; layer_info [ i ] . clipping = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . flags = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . visible = ! ( layer_info [ i ] . flags & 0x02 ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>blend=%.4s,<S2SV_blank>opacity=%.20g,<S2SV_blank>clipping=%s,<S2SV_blank>flags=%d,<S2SV_blank>visible=%s\" , layer_info [ i ] . blendkey , ( double ) layer_info [ i ] . opacity , layer_info [ i ] . clipping ? \"true\" : \"false\" , layer_info [ i ] . flags , layer_info [ i ] . visible ? \"true\" : \"false\" ) ; ( void ) ReadBlobByte ( image ) ; size = ReadBlobLong ( image ) ; if ( size != 0 ) { MagickSizeType combined_length , length ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>contains<S2SV_blank>additional<S2SV_blank>info\" ) ; length = ReadBlobLong ( image ) ; combined_length = length + 4 ; if ( length != 0 ) { layer_info [ i ] . mask . page . y = ReadBlobSignedLong ( image ) ; layer_info [ i ] . mask . page . x = ReadBlobSignedLong ( image ) ; layer_info [ i ] . mask . page . height = ( size_t ) ( ReadBlobSignedLong ( image ) - layer_info [ i ] . mask . page . y ) ; layer_info [ i ] . mask . page . width = ( size_t ) ( ReadBlobSignedLong ( image ) - layer_info [ i ] . mask . page . x ) ; layer_info [ i ] . mask . background = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . mask . flags = ( unsigned char ) ReadBlobByte ( image ) ; if ( ! ( layer_info [ i ] . mask . flags & 0x01 ) ) { layer_info [ i ] . mask . page . y = layer_info [ i ] . mask . page . y - layer_info [ i ] . page . y ; layer_info [ i ] . mask . page . x = layer_info [ i ] . mask . page . x - layer_info [ i ] . page . x ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>mask:<S2SV_blank>offset(%.20g,%.20g),<S2SV_blank>size(%.20g,%.20g),<S2SV_blank>length=%.20g\" , ( double ) layer_info [ i ] . mask . page . x , ( double ) layer_info [ i ] . mask . page . y , ( double ) layer_info [ i ] . mask . page . width , ( double ) layer_info [ i ] . mask . page . height , ( double ) ( ( MagickOffsetType ) length ) - 18 ) ; if ( DiscardBlobBytes ( image , ( MagickSizeType ) ( length - 18 ) ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } length = ReadBlobLong ( image ) ; combined_length += length + 4 ; if ( length != 0 ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>blending<S2SV_blank>ranges:<S2SV_blank>length=%.20g\" , ( double ) ( ( MagickOffsetType ) length ) ) ; <S2SV_StartBug> for ( j = 0 ; j < ( ssize_t ) length ; j += 8 ) <S2SV_EndBug> { size_t blend_source = ReadBlobLong ( image ) ; size_t blend_dest = ReadBlobLong ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , <S2SV_StartBug> \"InsufficientImageDataInFile\" , image -> filename ) ; <S2SV_EndBug> } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>source(%x),<S2SV_blank>dest(%x)\" , ( unsigned int ) blend_source , ( unsigned int ) blend_dest ) ; } } length = ( MagickSizeType ) ( unsigned char ) ReadBlobByte ( image ) ; combined_length += length + 1 ; if ( length > 0 ) ( void ) ReadBlob ( image , ( size_t ) length ++ , layer_info [ i ] . name ) ; layer_info [ i ] . name [ length ] = '\\\\0' ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>name:<S2SV_blank>%s\" , layer_info [ i ] . name ) ; if ( ( length % 4 ) != 0 ) { length = 4 - ( length % 4 ) ; combined_length += length ; if ( DiscardBlobBytes ( image , length ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } length = ( MagickSizeType ) size - combined_length ; if ( length > 0 ) { unsigned char * info ; if ( length > GetBlobSize ( image ) ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"InsufficientImageDataInFile\" , image -> filename ) ; } layer_info [ i ] . info = AcquireStringInfo ( ( const size_t ) length ) ; info = GetStringInfoDatum ( layer_info [ i ] . info ) ; ( void ) ReadBlob ( image , ( const size_t ) length , info ) ; } } } for ( i = 0 ; i < number_layers ; i ++ ) { if ( ( layer_info [ i ] . page . width == 0 ) || ( layer_info [ i ] . page . height == 0 ) ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>data<S2SV_blank>is<S2SV_blank>empty\" ) ; if ( layer_info [ i ] . info != ( StringInfo * ) NULL ) layer_info [ i ] . info = DestroyStringInfo ( layer_info [ i ] . info ) ; continue ; } layer_info [ i ] . image = CloneImage ( image , layer_info [ i ] . page . width , layer_info [ i ] . page . height , MagickFalse , exception ) ; if ( layer_info [ i ] . image == ( Image * ) NULL ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>allocation<S2SV_blank>of<S2SV_blank>image<S2SV_blank>for<S2SV_blank>layer<S2SV_blank>%.20g<S2SV_blank>failed\" , ( double ) i ) ; ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; } if ( layer_info [ i ] . info != ( StringInfo * ) NULL ) { ( void ) SetImageProfile ( layer_info [ i ] . image , \"psd:additional-info\" , layer_info [ i ] . info , exception ) ; layer_info [ i ] . info = DestroyStringInfo ( layer_info [ i ] . info ) ; } } if ( image_info -> ping == MagickFalse ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( layer_info [ i ] . image == ( Image * ) NULL ) { for ( j = 0 ; j < layer_info [ i ] . channels ; j ++ ) { if ( DiscardBlobBytes ( image , ( MagickSizeType ) layer_info [ i ] . channel_info [ j ] . size ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } continue ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>reading<S2SV_blank>data<S2SV_blank>for<S2SV_blank>layer<S2SV_blank>%.20g\" , ( double ) i ) ; status = ReadPSDLayer ( image , image_info , psd_info , & layer_info [ i ] , exception ) ; if ( status == MagickFalse ) break ; status = SetImageProgress ( image , LoadImagesTag , i , ( MagickSizeType ) number_layers ) ; if ( status == MagickFalse ) break ; } } if ( status != MagickFalse ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( layer_info [ i ] . image == ( Image * ) NULL ) { for ( j = i ; j < number_layers - 1 ; j ++ ) layer_info [ j ] = layer_info [ j + 1 ] ; number_layers -- ; i -- ; } } if ( number_layers > 0 ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( i > 0 ) layer_info [ i ] . image -> previous = layer_info [ i - 1 ] . image ; if ( i < ( number_layers - 1 ) ) layer_info [ i ] . image -> next = layer_info [ i + 1 ] . image ; layer_info [ i ] . image -> page = layer_info [ i ] . page ; } image -> next = layer_info [ 0 ] . image ; layer_info [ 0 ] . image -> previous = image ; } layer_info = ( LayerInfo * ) RelinquishMagickMemory ( layer_info ) ; } else layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; } return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( DiscardBlobBytes ( image , length ) == <S2SV_ModEnd> MagickFalse ) { <S2SV_ModStart> ( CorruptImageError , \"UnexpectedEndOfFile\" <S2SV_ModEnd> , image -> <S2SV_ModStart> image -> filename <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13300\n\n```\nCWE-787 <S2SV_StartBug> static PixelChannels * * AcquirePixelThreadSet ( const Image * image ) <S2SV_EndBug> { PixelChannels * * pixels ; register ssize_t i ; size_t <S2SV_StartBug> number_threads ; <S2SV_EndBug> number_threads = ( size_t ) GetMagickResourceLimit ( ThreadResource ) ; pixels = ( PixelChannels * * ) AcquireQuantumMemory ( number_threads , sizeof ( * pixels ) ) ; if ( pixels == ( PixelChannels * * ) NULL ) return ( ( PixelChannels * * ) NULL ) ; ( void ) memset ( pixels , 0 , number_threads * sizeof ( * pixels ) ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) number_threads ; i ++ ) <S2SV_EndBug> { register ssize_t j ; <S2SV_StartBug> pixels [ i ] = ( PixelChannels * ) AcquireQuantumMemory ( image -> columns , <S2SV_EndBug> sizeof ( * * pixels ) ) ; if ( pixels [ i ] == ( PixelChannels * ) NULL ) return ( DestroyPixelThreadSet ( pixels ) ) ; <S2SV_StartBug> for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) <S2SV_EndBug> { register ssize_t k ; for ( k = 0 ; k < MaxPixelChannels ; k ++ ) pixels [ i ] [ j ] . channel [ k ] = 0.0 ; } } return ( pixels ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const Image * images ) { const Image * next ; <S2SV_ModEnd> PixelChannels * * <S2SV_ModStart> i ; size_t columns , <S2SV_ModStart> ) ) ; columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; <S2SV_ModStart> ) AcquireQuantumMemory ( columns , <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> ( ssize_t ) <S2SV_ModEnd> columns ; j\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int handle_keywordonly_args ( struct compiling * c , const node * n , int start , asdl_seq * kwonlyargs , asdl_seq * kwdefaults ) { PyObject * argname ; node * ch ; expr_ty expression , annotation ; arg_ty arg ; int i = start ; int j = 0 ; if ( kwonlyargs == NULL ) { ast_error ( c , CHILD ( n , start ) , \"named<S2SV_blank>arguments<S2SV_blank>must<S2SV_blank>follow<S2SV_blank>bare<S2SV_blank>*\" ) ; return - 1 ; } assert ( kwdefaults != NULL ) ; while ( i < NCH ( n ) ) { ch = CHILD ( n , i ) ; switch ( TYPE ( ch ) ) { case vfpdef : case tfpdef : if ( i + 1 < NCH ( n ) && TYPE ( CHILD ( n , i + 1 ) ) == EQUAL ) { expression = ast_for_expr ( c , CHILD ( n , i + 2 ) ) ; if ( ! expression ) goto error ; asdl_seq_SET ( kwdefaults , j , expression ) ; i += 2 ; } else { asdl_seq_SET ( kwdefaults , j , NULL ) ; } if ( NCH ( ch ) == 3 ) { annotation = ast_for_expr ( c , CHILD ( ch , 2 ) ) ; if ( ! annotation ) goto error ; } else { annotation = NULL ; } ch = CHILD ( ch , 0 ) ; argname = NEW_IDENTIFIER ( ch ) ; if ( ! argname ) goto error ; if ( forbidden_name ( c , argname , ch , 0 ) ) goto error ; arg = arg ( argname , annotation , NULL , LINENO ( ch ) , ch -> n_col_offset , c -> c_arena ) ; if ( ! arg ) goto error ; asdl_seq_SET ( kwonlyargs , j ++ , arg ) ; i += 1 ; <S2SV_StartBug> if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == COMMA ) <S2SV_EndBug> i += 1 ; break ; case TYPE_COMMENT : arg -> type_comment = NEW_TYPE_COMMENT ( ch ) ; i += 1 ; break ; case DOUBLESTAR : return i ; default : ast_error ( c , ch , \"unexpected<S2SV_blank>node\" ) ; goto error ; } } return i ; error : return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> TYPE ( CHILD\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16805\n\n```\nCWE-125 static const ut8 * r_bin_dwarf_parse_comp_unit ( Sdb * s , const ut8 * obuf , RBinDwarfCompUnit * cu , const RBinDwarfDebugAbbrev * da , size_t offset , const ut8 * debug_str , size_t debug_str_len ) { const ut8 * buf = obuf , * buf_end = obuf + ( cu -> hdr . length - 7 ) ; ut64 abbr_code ; size_t i ; if ( cu -> hdr . length > debug_str_len ) { return NULL ; } while ( buf && buf < buf_end && buf >= obuf ) { if ( cu -> length && cu -> capacity == cu -> length ) { r_bin_dwarf_expand_cu ( cu ) ; } buf = r_uleb128 ( buf , buf_end - buf , & abbr_code ) ; if ( abbr_code > da -> length || ! buf ) { return NULL ; } r_bin_dwarf_init_die ( & cu -> dies [ cu -> length ] ) ; if ( ! abbr_code ) { cu -> dies [ cu -> length ] . abbrev_code = 0 ; cu -> length ++ ; buf ++ ; continue ; } cu -> dies [ cu -> length ] . abbrev_code = abbr_code ; cu -> dies [ cu -> length ] . tag = da -> decls [ abbr_code - 1 ] . tag ; abbr_code += offset ; if ( da -> capacity < abbr_code ) { return NULL ; } for ( i = 0 ; i < da -> decls [ abbr_code - 1 ] . length ; i ++ ) { if ( cu -> dies [ cu -> length ] . length == cu -> dies [ cu -> length ] . capacity ) { r_bin_dwarf_expand_die ( & cu -> dies [ cu -> length ] ) ; } if ( i >= cu -> dies [ cu -> length ] . capacity || i >= da -> decls [ abbr_code - 1 ] . capacity ) { eprintf ( \"Warning:<S2SV_blank>malformed<S2SV_blank>dwarf<S2SV_blank>attribute<S2SV_blank>capacity<S2SV_blank>doesn\\'t<S2SV_blank>match<S2SV_blank>length\\\\n\" ) ; break ; } memset ( & cu -> dies [ cu -> length ] . attr_values [ i ] , 0 , sizeof ( cu -> dies [ cu -> length ] . attr_values [ i ] ) ) ; buf = r_bin_dwarf_parse_attr_value ( buf , buf_end - buf , & da -> decls [ abbr_code - 1 ] . specs [ i ] , & cu -> dies [ cu -> length ] . attr_values [ i ] , & cu -> hdr , debug_str , debug_str_len ) ; if ( cu -> dies [ cu -> length ] . attr_values [ i ] . name == DW_AT_comp_dir ) { const char * name = cu -> dies [ cu -> length ] . attr_values [ i ] . encoding . str_struct . string ; sdb_set ( s , \"DW_AT_comp_dir\" , name , 0 ) ; } cu -> dies [ cu -> length ] . length ++ ; } cu -> length ++ ; } return buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void model_rd_for_sb_y ( VP9_COMP * cpi , BLOCK_SIZE bsize , MACROBLOCK * x , MACROBLOCKD * xd , <S2SV_StartBug> int * out_rate_sum , int64_t * out_dist_sum ) { <S2SV_EndBug> unsigned int sse ; int rate ; int64_t dist ; struct macroblock_plane * const p = & x -> plane [ 0 ] ; struct macroblockd_plane * const pd = & xd -> plane [ 0 ] ; <S2SV_StartBug> int var = cpi -> fn_ptr [ bsize ] . vf ( p -> src . buf , p -> src . stride , <S2SV_EndBug> pd -> dst . buf , pd -> dst . stride , & sse ) ; <S2SV_StartBug> vp9_model_rd_from_var_lapndz ( sse + var , 1 << num_pels_log2_lookup [ bsize ] , <S2SV_EndBug> pd -> dequant [ 1 ] >> 3 , & rate , & dist ) ; * out_rate_sum = rate ; * out_dist_sum = dist << 3 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int64_t * out_dist_sum , unsigned int * var_y , unsigned int * sse_y <S2SV_ModStart> 0 ] ; const int64_t dc_thr = p -> quant_thred [ 0 ] >> 6 ; const int64_t ac_thr = p -> quant_thred [ 1 ] >> 6 ; const uint32_t dc_quant = pd -> dequant [ 0 ] ; const uint32_t ac_quant = pd -> dequant [ 1 ] ; unsigned <S2SV_ModStart> sse ) ; int skip_dc = 0 ; * var_y = var ; * sse_y = sse ; if ( cpi -> common . tx_mode == TX_MODE_SELECT ) { if ( sse > ( var << 2 ) ) xd -> mi [ 0 ] -> mbmi . tx_size = MIN ( max_txsize_lookup [ bsize ] , tx_mode_to_biggest_tx_size [ cpi -> common . tx_mode ] ) ; else xd -> mi [ 0 ] -> mbmi . tx_size = TX_8X8 ; if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ && cyclic_refresh_segment_id_boosted ( xd -> mi [ 0 ] -> mbmi . segment_id ) ) xd -> mi [ 0 ] -> mbmi . tx_size = TX_8X8 ; else if ( xd -> mi [ 0 ] -> mbmi . tx_size > TX_16X16 ) xd -> mi [ 0 ] -> mbmi . tx_size = TX_16X16 ; } else { xd -> mi [ 0 ] -> mbmi . tx_size = MIN ( max_txsize_lookup [ bsize ] , tx_mode_to_biggest_tx_size [ cpi -> common . tx_mode ] ) ; } { const BLOCK_SIZE unit_size = txsize_to_bsize [ xd -> mi [ 0 ] -> mbmi . tx_size ] ; const unsigned int num_blk_log2 = ( b_width_log2_lookup [ bsize ] - b_width_log2_lookup [ unit_size ] ) + ( b_height_log2_lookup [ bsize ] - b_height_log2_lookup [ unit_size ] ) ; const unsigned int sse_tx = sse >> num_blk_log2 ; const unsigned int var_tx = var >> num_blk_log2 ; x -> skip_txfm [ 0 ] = SKIP_TXFM_NONE ; if ( var_tx < ac_thr || var == 0 ) { x -> skip_txfm [ 0 ] = SKIP_TXFM_AC_ONLY ; if ( sse_tx - var_tx < dc_thr || sse == var ) x -> skip_txfm [ 0 ] = SKIP_TXFM_AC_DC ; } else { if ( sse_tx - var_tx < dc_thr || sse == var ) skip_dc = 1 ; } } if ( x -> skip_txfm [ 0 ] == SKIP_TXFM_AC_DC ) { * out_rate_sum = 0 ; * out_dist_sum = sse << 4 ; return ; } if ( ! skip_dc ) { # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { <S2SV_ModStart> vp9_model_rd_from_var_lapndz ( sse - var , num_pels_log2_lookup [ bsize ] , dc_quant >> ( xd -> bd - 5 ) , & rate , & dist ) ; } else { vp9_model_rd_from_var_lapndz ( sse - var , num_pels_log2_lookup [ bsize ] , dc_quant >> 3 , & rate , & dist ) ; } # else vp9_model_rd_from_var_lapndz ( sse - var , num_pels_log2_lookup [ bsize ] , dc_quant >> 3 , & rate , & dist ) ; # endif } if ( ! skip_dc ) { * out_rate_sum = rate >> 1 <S2SV_ModEnd> ; * out_dist_sum <S2SV_ModStart> 3 ; } else { * out_rate_sum = 0 ; * out_dist_sum = ( sse - var ) << 4 ; } # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { vp9_model_rd_from_var_lapndz ( var , num_pels_log2_lookup [ bsize ] , ac_quant >> ( xd -> bd - 5 ) , & rate , & dist ) ; } else { vp9_model_rd_from_var_lapndz ( var , num_pels_log2_lookup [ bsize ] , ac_quant >> 3 , & rate , & dist ) ; } # else vp9_model_rd_from_var_lapndz ( var , num_pels_log2_lookup [ bsize ] , ac_quant >> 3 , & rate , & dist ) ; # endif * out_rate_sum += rate ; * out_dist_sum += dist << 4 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_full_search_sad_c ( MACROBLOCK * x , BLOCK * b , BLOCKD * d , int_mv * ref_mv , int sad_per_bit , int distance , vp8_variance_fn_ptr_t * fn_ptr , int * mvcost [ 2 ] , int_mv * center_mv ) { unsigned char * what = ( * ( b -> base_src ) + b -> src ) ; int what_stride = b -> src_stride ; unsigned char * in_what ; int pre_stride = x -> e_mbd . pre . y_stride ; unsigned char * base_pre = x -> e_mbd . pre . y_buffer ; int in_what_stride = pre_stride ; int mv_stride = pre_stride ; unsigned char * bestaddress ; int_mv * best_mv = & d -> bmi . mv ; int_mv this_mv ; unsigned int bestsad ; unsigned int thissad ; int r , c ; unsigned char * check_here ; int ref_row = ref_mv -> as_mv . row ; int ref_col = ref_mv -> as_mv . col ; int row_min = ref_row - distance ; int row_max = ref_row + distance ; int col_min = ref_col - distance ; int col_max = ref_col + distance ; int * mvsadcost [ 2 ] ; int_mv fcenter_mv ; mvsadcost [ 0 ] = x -> mvsadcost [ 0 ] ; mvsadcost [ 1 ] = x -> mvsadcost [ 1 ] ; fcenter_mv . as_mv . row = center_mv -> as_mv . row >> 3 ; fcenter_mv . as_mv . col = center_mv -> as_mv . col >> 3 ; in_what = base_pre + d -> offset ; bestaddress = in_what + ( ref_row * pre_stride ) + ref_col ; best_mv -> as_mv . row = ref_row ; best_mv -> as_mv . col = ref_col ; bestsad = fn_ptr -> sdf ( what , what_stride , bestaddress , <S2SV_StartBug> in_what_stride , UINT_MAX ) <S2SV_EndBug> + mvsad_err_cost ( best_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( col_min < x -> mv_col_min ) col_min = x -> mv_col_min ; if ( col_max > x -> mv_col_max ) col_max = x -> mv_col_max ; if ( row_min < x -> mv_row_min ) row_min = x -> mv_row_min ; if ( row_max > x -> mv_row_max ) row_max = x -> mv_row_max ; for ( r = row_min ; r < row_max ; r ++ ) { this_mv . as_mv . row = r ; check_here = r * mv_stride + in_what + col_min ; for ( c = col_min ; c < col_max ; c ++ ) { <S2SV_StartBug> thissad = fn_ptr -> sdf ( what , what_stride , check_here , in_what_stride , bestsad ) ; <S2SV_EndBug> this_mv . as_mv . col = c ; thissad += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( thissad < bestsad ) { bestsad = thissad ; best_mv -> as_mv . row = r ; best_mv -> as_mv . col = c ; bestaddress = check_here ; } check_here ++ ; } } this_mv . as_mv . row = best_mv -> as_mv . row << 3 ; this_mv . as_mv . col = best_mv -> as_mv . col << 3 ; return fn_ptr -> vf ( what , what_stride , bestaddress , in_what_stride , & thissad ) + mv_err_cost ( & this_mv , center_mv , mvcost , x -> errorperbit ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bestaddress , in_what_stride <S2SV_ModEnd> ) + mvsad_err_cost <S2SV_ModStart> check_here , in_what_stride <S2SV_ModEnd> ) ; this_mv\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0217\n\n```\nCWE-399 <S2SV_StartBug> static void xen_netbk_idx_release ( struct xen_netbk * netbk , u16 pending_idx ) <S2SV_EndBug> { struct xenvif * vif ; struct pending_tx_info * pending_tx_info ; pending_ring_idx_t index ; if ( netbk -> mmap_pages [ pending_idx ] == NULL ) return ; pending_tx_info = & netbk -> pending_tx_info [ pending_idx ] ; vif = pending_tx_info -> vif ; <S2SV_StartBug> make_tx_response ( vif , & pending_tx_info -> req , XEN_NETIF_RSP_OKAY ) ; <S2SV_EndBug> index = pending_index ( netbk -> pending_prod ++ ) ; netbk -> pending_ring [ index ] = pending_idx ; xenvif_put ( vif ) ; netbk -> mmap_pages [ pending_idx ] -> mapping = 0 ; put_page ( netbk -> mmap_pages [ pending_idx ] ) ; netbk -> mmap_pages [ pending_idx ] = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , u16 pending_idx , u8 status <S2SV_ModStart> -> req , status <S2SV_ModEnd> ) ; index\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5134\n\n```\nCWE-119 static xmlChar * xmlParseAttValueComplex ( xmlParserCtxtPtr ctxt , int * attlen , int normalize ) { xmlChar limit = 0 ; xmlChar * buf = NULL ; xmlChar * rep = NULL ; int len = 0 ; int buf_size = 0 ; int c , l , in_space = 0 ; xmlChar * current = NULL ; xmlEntityPtr ent ; if ( NXT ( 0 ) == \\'\"\\' ) { ctxt -> instate = XML_PARSER_ATTRIBUTE_VALUE ; limit = \\'\"\\' ; NEXT ; } else if ( NXT ( 0 ) == '\\\\'' ) { limit = '\\\\'' ; ctxt -> instate = XML_PARSER_ATTRIBUTE_VALUE ; NEXT ; } else { xmlFatalErr ( ctxt , XML_ERR_ATTRIBUTE_NOT_STARTED , NULL ) ; return ( NULL ) ; } buf_size = XML_PARSER_BUFFER_SIZE ; buf = ( xmlChar * ) xmlMallocAtomic ( buf_size * sizeof ( xmlChar ) ) ; if ( buf == NULL ) goto mem_error ; c = CUR_CHAR ( l ) ; while ( ( NXT ( 0 ) != limit ) && ( IS_CHAR ( c ) ) && ( c != '<' ) ) { if ( c == 0 ) break ; if ( c == '&' ) { in_space = 0 ; if ( NXT ( 1 ) == '#' ) { int val = xmlParseCharRef ( ctxt ) ; if ( val == '&' ) { if ( ctxt -> replaceEntities ) { if ( len > buf_size - 10 ) { growBuffer ( buf , 10 ) ; } buf [ len ++ ] = '&' ; } else { if ( len > buf_size - 10 ) { growBuffer ( buf , 10 ) ; } buf [ len ++ ] = '&' ; buf [ len ++ ] = '#' ; buf [ len ++ ] = '3' ; buf [ len ++ ] = '8' ; buf [ len ++ ] = ';' ; } } else if ( val != 0 ) { if ( len > buf_size - 10 ) { growBuffer ( buf , 10 ) ; } len += xmlCopyChar ( 0 , & buf [ len ] , val ) ; } } else { ent = xmlParseEntityRef ( ctxt ) ; ctxt -> nbentities ++ ; if ( ent != NULL ) ctxt -> nbentities += ent -> owner ; if ( ( ent != NULL ) && ( ent -> etype == XML_INTERNAL_PREDEFINED_ENTITY ) ) { if ( len > buf_size - 10 ) { growBuffer ( buf , 10 ) ; } if ( ( ctxt -> replaceEntities == 0 ) && ( ent -> content [ 0 ] == '&' ) ) { buf [ len ++ ] = '&' ; buf [ len ++ ] = '#' ; buf [ len ++ ] = '3' ; buf [ len ++ ] = '8' ; buf [ len ++ ] = ';' ; } else { buf [ len ++ ] = ent -> content [ 0 ] ; } } else if ( ( ent != NULL ) && ( ctxt -> replaceEntities != 0 ) ) { if ( ent -> etype != XML_INTERNAL_PREDEFINED_ENTITY ) { rep = xmlStringDecodeEntities ( ctxt , ent -> content , XML_SUBSTITUTE_REF , 0 , 0 , 0 ) ; if ( rep != NULL ) { current = rep ; while ( * current != 0 ) { if ( ( * current == 0xD ) || ( * current == 0xA ) || ( * current == 0x9 ) ) { buf [ len ++ ] = 0x20 ; current ++ ; } else buf [ len ++ ] = * current ++ ; if ( len > buf_size - 10 ) { growBuffer ( buf , 10 ) ; } } xmlFree ( rep ) ; rep = NULL ; } } else { if ( len > buf_size - 10 ) { growBuffer ( buf , 10 ) ; } if ( ent -> content != NULL ) buf [ len ++ ] = ent -> content [ 0 ] ; } } else if ( ent != NULL ) { int i = xmlStrlen ( ent -> name ) ; const xmlChar * cur = ent -> name ; if ( ( ent -> etype != XML_INTERNAL_PREDEFINED_ENTITY ) && ( ent -> content != NULL ) ) { rep = xmlStringDecodeEntities ( ctxt , ent -> content , XML_SUBSTITUTE_REF , 0 , 0 , 0 ) ; if ( rep != NULL ) { xmlFree ( rep ) ; rep = NULL ; } } buf [ len ++ ] = '&' ; while ( len > buf_size - i - 10 ) { growBuffer ( buf , i + 10 ) ; } for ( ; i > 0 ; i -- ) buf [ len ++ ] = * cur ++ ; buf [ len ++ ] = ';' ; } } } else { if ( ( c == 0x20 ) || ( c == 0xD ) || ( c == 0xA ) || ( c == 0x9 ) ) { if ( ( len != 0 ) || ( ! normalize ) ) { if ( ( ! normalize ) || ( ! in_space ) ) { COPY_BUF ( l , buf , len , 0x20 ) ; while ( len > buf_size - 10 ) { growBuffer ( buf , 10 ) ; } } in_space = 1 ; } } else { in_space = 0 ; COPY_BUF ( l , buf , len , c ) ; if ( len > buf_size - 10 ) { growBuffer ( buf , 10 ) ; } } NEXTL ( l ) ; } GROW ; c = CUR_CHAR ( l ) ; } if ( ( in_space ) && ( normalize ) ) { <S2SV_StartBug> while ( buf [ len - 1 ] == 0x20 ) len -- ; <S2SV_EndBug> } buf [ len ] = 0 ; if ( RAW == '<' ) { xmlFatalErr ( ctxt , XML_ERR_LT_IN_ATTRIBUTE , NULL ) ; } else if ( RAW != limit ) { if ( ( c != 0 ) && ( ! IS_CHAR ( c ) ) ) { xmlFatalErrMsg ( ctxt , XML_ERR_INVALID_CHAR , \"invalid<S2SV_blank>character<S2SV_blank>in<S2SV_blank>attribute<S2SV_blank>value\\\\n\" ) ; } else { xmlFatalErrMsg ( ctxt , XML_ERR_ATTRIBUTE_NOT_FINISHED , \"AttValue:<S2SV_blank>\\'<S2SV_blank>expected\\\\n\" ) ; } } else NEXT ; if ( attlen != NULL ) * attlen = len ; return ( buf ) ; mem_error : xmlErrMemory ( ctxt , NULL ) ; if ( buf != NULL ) xmlFree ( buf ) ; if ( rep != NULL ) xmlFree ( rep ) ; return ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { while ( ( len > 0 ) && ( <S2SV_ModStart> == 0x20 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3511\n\n```\nCWE-362 static long madvise_remove ( struct vm_area_struct * vma , struct vm_area_struct * * prev , unsigned long start , unsigned long end ) { loff_t offset ; int error ; <S2SV_StartBug> * prev = NULL ; <S2SV_EndBug> if ( vma -> vm_flags & ( VM_LOCKED | VM_NONLINEAR | VM_HUGETLB ) ) return - EINVAL ; <S2SV_StartBug> if ( ! vma -> vm_file || ! vma -> vm_file -> f_mapping <S2SV_EndBug> <S2SV_StartBug> || ! vma -> vm_file -> f_mapping -> host ) { <S2SV_EndBug> return - EINVAL ; } if ( ( vma -> vm_flags & ( VM_SHARED | VM_WRITE ) ) != ( VM_SHARED | VM_WRITE ) ) return - EACCES ; offset = ( loff_t ) ( start - vma -> vm_start ) + ( ( loff_t ) vma -> vm_pgoff << PAGE_SHIFT ) ; <S2SV_StartBug> up_read ( & current -> mm -> mmap_sem ) ; <S2SV_EndBug> <S2SV_StartBug> error = do_fallocate ( vma -> vm_file , <S2SV_EndBug> FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE , <S2SV_StartBug> offset , end - start ) ; <S2SV_EndBug> down_read ( & current -> mm -> mmap_sem ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int error ; struct file * f ; <S2SV_ModStart> - EINVAL ; f = vma -> vm_file ; <S2SV_ModStart> if ( ! f || ! f <S2SV_ModEnd> -> f_mapping || <S2SV_ModStart> f_mapping || ! f <S2SV_ModEnd> -> f_mapping -> <S2SV_ModStart> PAGE_SHIFT ) ; get_file ( f ) ; <S2SV_ModStart> = do_fallocate ( f <S2SV_ModEnd> , FALLOC_FL_PUNCH_HOLE | <S2SV_ModStart> end - start ) ; fput ( f\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14763\n\n```\nCWE-189 static ssize_t f_hidg_write ( struct file * file , const char __user * buffer , size_t count , loff_t * offp ) { struct f_hidg * hidg = file -> private_data ; struct usb_request * req ; unsigned long flags ; ssize_t status = - ENOMEM ; if ( ! access_ok ( buffer , count ) ) return - EFAULT ; spin_lock_irqsave ( & hidg -> write_spinlock , flags ) ; # define WRITE_COND ( ! hidg -> write_pending ) try_again : while ( ! WRITE_COND ) { spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; if ( file -> f_flags & O_NONBLOCK ) return - EAGAIN ; if ( wait_event_interruptible_exclusive ( hidg -> write_queue , WRITE_COND ) ) return - ERESTARTSYS ; spin_lock_irqsave ( & hidg -> write_spinlock , flags ) ; } hidg -> write_pending = 1 ; req = hidg -> req ; count = min_t ( unsigned , count , hidg -> report_length ) ; spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; status = copy_from_user ( req -> buf , buffer , count ) ; if ( status != 0 ) { ERROR ( hidg -> func . config -> cdev , \"copy_from_user<S2SV_blank>error\\\\n\" ) ; status = - EINVAL ; goto release_write_pending ; } spin_lock_irqsave ( & hidg -> write_spinlock , flags ) ; if ( ! hidg -> req ) { free_ep_req ( hidg -> in_ep , req ) ; goto try_again ; } req -> status = 0 ; req -> zero = 0 ; req -> length = count ; req -> complete = f_hidg_req_complete ; req -> context = hidg ; <S2SV_StartBug> status = usb_ep_queue ( hidg -> in_ep , req , GFP_ATOMIC ) ; <S2SV_EndBug> if ( status < 0 ) { ERROR ( hidg -> func . config -> cdev , \"usb_ep_queue<S2SV_blank>error<S2SV_blank>on<S2SV_blank>int<S2SV_blank>endpoint<S2SV_blank>%zd\\\\n\" , status ) ; <S2SV_StartBug> goto release_write_pending_unlocked ; <S2SV_EndBug> } else { status = count ; } <S2SV_StartBug> spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; <S2SV_EndBug> return status ; release_write_pending : spin_lock_irqsave ( & hidg -> write_spinlock , flags ) ; <S2SV_StartBug> release_write_pending_unlocked : <S2SV_EndBug> hidg -> write_pending = 0 ; spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; wake_up ( & hidg -> write_queue ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = hidg ; spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; <S2SV_ModStart> ) ; goto release_write_pending <S2SV_ModEnd> ; } else <S2SV_ModStart> count ; } <S2SV_ModEnd> return status ; <S2SV_ModStart> flags ) ; <S2SV_ModEnd> hidg -> write_pending\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-426(不受信任的搜索路径)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10009\n\n```\nCWE-426 int main ( int ac , char * * av ) { int c_flag = 0 , d_flag = 0 , D_flag = 0 , k_flag = 0 , s_flag = 0 ; int sock , fd , ch , result , saved_errno ; u_int nalloc ; char * shell , * format , * pidstr , * agentsocket = NULL ; fd_set * readsetp = NULL , * writesetp = NULL ; struct rlimit rlim ; extern int optind ; extern char * optarg ; pid_t pid ; char pidstrbuf [ 1 + 3 * sizeof pid ] ; struct timeval * tvp = NULL ; size_t len ; mode_t prev_mask ; ssh_malloc_init ( ) ; sanitise_stdfd ( ) ; setegid ( getgid ( ) ) ; setgid ( getgid ( ) ) ; # ifdef WITH_OPENSSL OpenSSL_add_all_algorithms ( ) ; # endif <S2SV_StartBug> while ( ( ch = getopt ( ac , av , \"cDdksE:a:t:\" ) ) != - 1 ) { <S2SV_EndBug> switch ( ch ) { case 'E' : fingerprint_hash = ssh_digest_alg_by_name ( optarg ) ; if ( fingerprint_hash == - 1 ) fatal ( \"Invalid<S2SV_blank>hash<S2SV_blank>algorithm<S2SV_blank>\\\\\"%s\\\\\"\" , optarg ) ; break ; case 'c' : if ( s_flag ) usage ( ) ; c_flag ++ ; break ; case 'k' : <S2SV_StartBug> k_flag ++ ; <S2SV_EndBug> break ; case 's' : if ( c_flag ) usage ( ) ; s_flag ++ ; break ; case 'd' : if ( d_flag || D_flag ) usage ( ) ; d_flag ++ ; break ; case 'D' : if ( d_flag || D_flag ) usage ( ) ; D_flag ++ ; break ; case 'a' : agentsocket = optarg ; break ; case 't' : if ( ( lifetime = convtime ( optarg ) ) == - 1 ) { fprintf ( stderr , \"Invalid<S2SV_blank>lifetime\\\\n\" ) ; usage ( ) ; } break ; default : usage ( ) ; } } ac -= optind ; av += optind ; if ( ac > 0 && ( c_flag || k_flag || s_flag || d_flag || D_flag ) ) usage ( ) ; <S2SV_StartBug> if ( ac == 0 && ! c_flag && ! s_flag ) { <S2SV_EndBug> shell = getenv ( \"SHELL\" ) ; if ( shell != NULL && ( len = strlen ( shell ) ) > 2 && strncmp ( shell + len - 3 , \"csh\" , 3 ) == 0 ) c_flag = 1 ; } if ( k_flag ) { const char * errstr = NULL ; pidstr = getenv ( SSH_AGENTPID_ENV_NAME ) ; if ( pidstr == NULL ) { fprintf ( stderr , \"%s<S2SV_blank>not<S2SV_blank>set,<S2SV_blank>cannot<S2SV_blank>kill<S2SV_blank>agent\\\\n\" , SSH_AGENTPID_ENV_NAME ) ; exit ( 1 ) ; } pid = ( int ) strtonum ( pidstr , 2 , INT_MAX , & errstr ) ; if ( errstr ) { fprintf ( stderr , \"%s=\\\\\"%s\\\\\",<S2SV_blank>which<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>good<S2SV_blank>PID:<S2SV_blank>%s\\\\n\" , SSH_AGENTPID_ENV_NAME , pidstr , errstr ) ; exit ( 1 ) ; } if ( kill ( pid , SIGTERM ) == - 1 ) { perror ( \"kill\" ) ; exit ( 1 ) ; } format = c_flag ? \"unsetenv<S2SV_blank>%s;\\\\n\" : \"unset<S2SV_blank>%s;\\\\n\" ; printf ( format , SSH_AUTHSOCKET_ENV_NAME ) ; printf ( format , SSH_AGENTPID_ENV_NAME ) ; printf ( \"echo<S2SV_blank>Agent<S2SV_blank>pid<S2SV_blank>%ld<S2SV_blank>killed;\\\\n\" , ( long ) pid ) ; exit ( 0 ) ; } parent_pid = getpid ( ) ; if ( agentsocket == NULL ) { mktemp_proto ( socket_dir , sizeof ( socket_dir ) ) ; if ( mkdtemp ( socket_dir ) == NULL ) { perror ( \"mkdtemp:<S2SV_blank>private<S2SV_blank>socket<S2SV_blank>dir\" ) ; exit ( 1 ) ; } snprintf ( socket_name , sizeof socket_name , \"%s/agent.%ld\" , socket_dir , ( long ) parent_pid ) ; } else { socket_dir [ 0 ] = '\\\\0' ; strlcpy ( socket_name , agentsocket , sizeof socket_name ) ; } prev_mask = umask ( 0177 ) ; sock = unix_listener ( socket_name , SSH_LISTEN_BACKLOG , 0 ) ; if ( sock < 0 ) { * socket_name = '\\\\0' ; cleanup_exit ( 1 ) ; } umask ( prev_mask ) ; if ( D_flag || d_flag ) { log_init ( __progname , d_flag ? SYSLOG_LEVEL_DEBUG3 : SYSLOG_LEVEL_INFO , SYSLOG_FACILITY_AUTH , 1 ) ; format = c_flag ? \"setenv<S2SV_blank>%s<S2SV_blank>%s;\\\\n\" : \"%s=%s;<S2SV_blank>export<S2SV_blank>%s;\\\\n\" ; printf ( format , SSH_AUTHSOCKET_ENV_NAME , socket_name , SSH_AUTHSOCKET_ENV_NAME ) ; printf ( \"echo<S2SV_blank>Agent<S2SV_blank>pid<S2SV_blank>%ld;\\\\n\" , ( long ) parent_pid ) ; fflush ( stdout ) ; goto skip ; } pid = fork ( ) ; if ( pid == - 1 ) { perror ( \"fork\" ) ; cleanup_exit ( 1 ) ; } if ( pid != 0 ) { close ( sock ) ; snprintf ( pidstrbuf , sizeof pidstrbuf , \"%ld\" , ( long ) pid ) ; if ( ac == 0 ) { format = c_flag ? \"setenv<S2SV_blank>%s<S2SV_blank>%s;\\\\n\" : \"%s=%s;<S2SV_blank>export<S2SV_blank>%s;\\\\n\" ; printf ( format , SSH_AUTHSOCKET_ENV_NAME , socket_name , SSH_AUTHSOCKET_ENV_NAME ) ; printf ( format , SSH_AGENTPID_ENV_NAME , pidstrbuf , SSH_AGENTPID_ENV_NAME ) ; printf ( \"echo<S2SV_blank>Agent<S2SV_blank>pid<S2SV_blank>%ld;\\\\n\" , ( long ) pid ) ; exit ( 0 ) ; } if ( setenv ( SSH_AUTHSOCKET_ENV_NAME , socket_name , 1 ) == - 1 || setenv ( SSH_AGENTPID_ENV_NAME , pidstrbuf , 1 ) == - 1 ) { perror ( \"setenv\" ) ; exit ( 1 ) ; } execvp ( av [ 0 ] , av ) ; perror ( av [ 0 ] ) ; exit ( 1 ) ; } log_init ( __progname , SYSLOG_LEVEL_INFO , SYSLOG_FACILITY_AUTH , 0 ) ; if ( setsid ( ) == - 1 ) { error ( \"setsid:<S2SV_blank>%s\" , strerror ( errno ) ) ; cleanup_exit ( 1 ) ; } ( void ) chdir ( \"/\" ) ; if ( ( fd = open ( _PATH_DEVNULL , O_RDWR , 0 ) ) != - 1 ) { ( void ) dup2 ( fd , STDIN_FILENO ) ; ( void ) dup2 ( fd , STDOUT_FILENO ) ; ( void ) dup2 ( fd , STDERR_FILENO ) ; if ( fd > 2 ) close ( fd ) ; } rlim . rlim_cur = rlim . rlim_max = 0 ; if ( setrlimit ( RLIMIT_CORE , & rlim ) < 0 ) { error ( \"setrlimit<S2SV_blank>RLIMIT_CORE:<S2SV_blank>%s\" , strerror ( errno ) ) ; cleanup_exit ( 1 ) ; } skip : cleanup_pid = getpid ( ) ; # ifdef ENABLE_PKCS11 pkcs11_init ( 0 ) ; # endif new_socket ( AUTH_SOCKET , sock ) ; if ( ac > 0 ) parent_alive_interval = 10 ; idtab_init ( ) ; signal ( SIGPIPE , SIG_IGN ) ; signal ( SIGINT , ( d_flag | D_flag ) ? cleanup_handler : SIG_IGN ) ; signal ( SIGHUP , cleanup_handler ) ; signal ( SIGTERM , cleanup_handler ) ; nalloc = 0 ; <S2SV_StartBug> if ( pledge ( \"stdio<S2SV_blank>cpath<S2SV_blank>unix<S2SV_blank>id<S2SV_blank>proc<S2SV_blank>exec\" , NULL ) == - 1 ) <S2SV_EndBug> fatal ( \"%s:<S2SV_blank>pledge:<S2SV_blank>%s\" , __progname , strerror ( errno ) ) ; while ( 1 ) { prepare_select ( & readsetp , & writesetp , & max_fd , & nalloc , & tvp ) ; result = select ( max_fd + 1 , readsetp , writesetp , NULL , tvp ) ; saved_errno = errno ; if ( parent_alive_interval != 0 ) check_parent_exists ( ) ; ( void ) reaper ( ) ; if ( result < 0 ) { if ( saved_errno == EINTR ) continue ; fatal ( \"select:<S2SV_blank>%s\" , strerror ( saved_errno ) ) ; } else if ( result > 0 ) after_select ( readsetp , writesetp ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , av , \"cDdksE:a:P:t:\" <S2SV_ModEnd> ) ) != <S2SV_ModStart> : k_flag ++ ; break ; case 'P' : if ( pkcs11_whitelist != NULL ) fatal ( \"-P<S2SV_blank>option<S2SV_blank>already<S2SV_blank>specified\" ) ; pkcs11_whitelist = xstrdup ( optarg ) <S2SV_ModStart> ; if ( pkcs11_whitelist == NULL ) pkcs11_whitelist = xstrdup ( DEFAULT_PKCS11_WHITELIST ) ; if ( <S2SV_ModStart> ( pledge ( \"stdio<S2SV_blank>rpath<S2SV_blank>cpath<S2SV_blank>unix<S2SV_blank>id<S2SV_blank>proc<S2SV_blank>exec\" <S2SV_ModEnd> , NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12894\n\n```\nCWE-125 const char * linkaddr_string ( netdissect_options * ndo , const u_char * ep , const unsigned int type , const unsigned int len ) { register u_int i ; register char * cp ; <S2SV_StartBug> register struct enamemem * tp ; <S2SV_EndBug> if ( len == 0 ) return ( \"<empty>\" ) ; if ( type == LINKADDR_ETHER && len == ETHER_ADDR_LEN ) return ( etheraddr_string ( ndo , ep ) ) ; if ( type == LINKADDR_FRELAY ) return ( q922_string ( ndo , ep , len ) ) ; tp = lookup_bytestring ( ndo , ep , len ) ; <S2SV_StartBug> if ( tp -> e_name ) <S2SV_EndBug> return ( tp -> e_name ) ; tp -> e_name = cp = ( char * ) malloc ( len * 3 ) ; <S2SV_StartBug> if ( tp -> e_name == NULL ) <S2SV_EndBug> ( * ndo -> ndo_error ) ( ndo , \"linkaddr_string:<S2SV_blank>malloc\" ) ; * cp ++ = hex [ * ep >> 4 ] ; * cp ++ = hex [ * ep ++ & 0xf ] ; for ( i = len - 1 ; i > 0 ; -- i ) { * cp ++ = ':' ; * cp ++ = hex [ * ep >> 4 ] ; * cp ++ = hex [ * ep ++ & 0xf ] ; } * cp = '\\\\0' ; <S2SV_StartBug> return ( tp -> e_name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; register struct bsnamemem <S2SV_ModEnd> * tp ; <S2SV_ModStart> ( tp -> bs_name ) return ( tp -> bs_name ) ; tp -> bs_name <S2SV_ModEnd> = cp = <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 int ext4_collapse_range ( struct inode * inode , loff_t offset , loff_t len ) { struct super_block * sb = inode -> i_sb ; ext4_lblk_t punch_start , punch_stop ; handle_t * handle ; unsigned int credits ; loff_t new_size , ioffset ; int ret ; if ( ! ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) return - EOPNOTSUPP ; if ( offset & ( EXT4_CLUSTER_SIZE ( sb ) - 1 ) || len & ( EXT4_CLUSTER_SIZE ( sb ) - 1 ) ) return - EINVAL ; if ( ! S_ISREG ( inode -> i_mode ) ) return - EINVAL ; trace_ext4_collapse_range ( inode , offset , len ) ; punch_start = offset >> EXT4_BLOCK_SIZE_BITS ( sb ) ; punch_stop = ( offset + len ) >> EXT4_BLOCK_SIZE_BITS ( sb ) ; if ( ext4_should_journal_data ( inode ) ) { ret = ext4_force_commit ( inode -> i_sb ) ; if ( ret ) return ret ; } ioffset = round_down ( offset , PAGE_SIZE ) ; ret = filemap_write_and_wait_range ( inode -> i_mapping , ioffset , LLONG_MAX ) ; if ( ret ) return ret ; mutex_lock ( & inode -> i_mutex ) ; if ( offset + len >= i_size_read ( inode ) ) { ret = - EINVAL ; goto out_mutex ; } if ( ! ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) { ret = - EOPNOTSUPP ; goto out_mutex ; } <S2SV_StartBug> truncate_pagecache ( inode , ioffset ) ; <S2SV_EndBug> <S2SV_StartBug> ext4_inode_block_unlocked_dio ( inode ) ; <S2SV_EndBug> inode_dio_wait ( inode ) ; credits = ext4_writepage_trans_blocks ( inode ) ; handle = ext4_journal_start ( inode , EXT4_HT_TRUNCATE , credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; <S2SV_StartBug> goto out_dio ; <S2SV_EndBug> } down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; ext4_discard_preallocations ( inode ) ; ret = ext4_es_remove_extent ( inode , punch_start , EXT_MAX_BLOCKS - punch_start ) ; if ( ret ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } ret = ext4_ext_remove_space ( inode , punch_start , punch_stop - 1 ) ; if ( ret ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } ext4_discard_preallocations ( inode ) ; ret = ext4_ext_shift_extents ( inode , handle , punch_stop , punch_stop - punch_start , SHIFT_LEFT ) ; if ( ret ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } new_size = i_size_read ( inode ) - len ; i_size_write ( inode , new_size ) ; EXT4_I ( inode ) -> i_disksize = new_size ; up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( IS_SYNC ( inode ) ) ext4_handle_sync ( handle ) ; inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; ext4_mark_inode_dirty ( handle , inode ) ; out_stop : ext4_journal_stop ( handle ) ; <S2SV_StartBug> out_dio : <S2SV_EndBug> ext4_inode_resume_unlocked_dio ( inode ) ; out_mutex : mutex_unlock ( & inode -> i_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_mutex ; } ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> ioffset ) ; <S2SV_ModEnd> credits = ext4_writepage_trans_blocks <S2SV_ModStart> ) ; goto out_mmap <S2SV_ModEnd> ; } down_write <S2SV_ModStart> handle ) ; out_mmap : up_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModEnd> ext4_inode_resume_unlocked_dio ( inode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18671\n\n```\nCWE-787 void handle_usb_rx ( const void * msg , size_t len ) { if ( msg_tiny_flag ) { <S2SV_StartBug> uint8_t buf [ 64 ] ; <S2SV_EndBug> memcpy ( buf , msg , sizeof ( buf ) ) ; uint16_t msgId = buf [ 4 ] | ( ( uint16_t ) buf [ 3 ] ) << 8 ; uint32_t msgSize = buf [ 8 ] | ( ( uint32_t ) buf [ 7 ] ) << 8 | ( ( uint32_t ) buf [ 6 ] ) << 16 | ( ( uint32_t ) buf [ 5 ] ) << 24 ; if ( msgSize > 64 - 9 ) { ( * msg_failure ) ( FailureType_Failure_UnexpectedMessage , \"Malformed<S2SV_blank>tiny<S2SV_blank>packet\" ) ; return ; } const MessagesMap_t * entry = message_map_entry ( NORMAL_MSG , msgId , IN_MSG ) ; if ( ! entry ) { ( * msg_failure ) ( FailureType_Failure_UnexpectedMessage , \"Unknown<S2SV_blank>message\" ) ; return ; } tiny_dispatch ( entry , buf + 9 , msgSize ) ; } else { usb_rx_helper ( msg , len , NORMAL_MSG ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> msg_tiny_flag ) { msg_read_tiny ( msg , len <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static void hugetlbfs_put_super ( struct super_block * sb ) { struct hugetlbfs_sb_info * sbi = HUGETLBFS_SB ( sb ) ; if ( sbi ) { sb -> s_fs_info = NULL ; <S2SV_StartBug> kfree ( sbi ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; if ( sbi -> spool ) hugepage_put_subpool ( sbi -> spool ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-326 static VALUE ossl_cipher_set_key ( VALUE self , VALUE key ) { EVP_CIPHER_CTX * ctx ; int key_len ; StringValue ( key ) ; GetCipher ( self , ctx ) ; key_len = EVP_CIPHER_CTX_key_length ( ctx ) ; if ( RSTRING_LEN ( key ) != key_len ) ossl_raise ( rb_eArgError , \"key<S2SV_blank>must<S2SV_blank>be<S2SV_blank>%d<S2SV_blank>bytes\" , key_len ) ; if ( EVP_CipherInit_ex ( ctx , NULL , NULL , ( unsigned char * ) RSTRING_PTR ( key ) , NULL , - 1 ) != 1 ) ossl_raise ( eCipherError , NULL ) ; <S2SV_StartBug> return key ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; rb_ivar_set ( self , id_key_set , Qtrue ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8666\n\n```\nCWE-400 struct sk_buff * * udp_gro_receive ( struct sk_buff * * head , struct sk_buff * skb , struct udphdr * uh ) { struct udp_offload_priv * uo_priv ; struct sk_buff * p , * * pp = NULL ; struct udphdr * uh2 ; unsigned int off = skb_gro_offset ( skb ) ; int flush = 1 ; <S2SV_StartBug> if ( NAPI_GRO_CB ( skb ) -> udp_mark || <S2SV_EndBug> ( skb -> ip_summed != CHECKSUM_PARTIAL && NAPI_GRO_CB ( skb ) -> csum_cnt == 0 && ! NAPI_GRO_CB ( skb ) -> csum_valid ) ) goto out ; <S2SV_StartBug> NAPI_GRO_CB ( skb ) -> udp_mark = 1 ; <S2SV_EndBug> rcu_read_lock ( ) ; uo_priv = rcu_dereference ( udp_offload_base ) ; for ( ; uo_priv != NULL ; uo_priv = rcu_dereference ( uo_priv -> next ) ) { if ( net_eq ( read_pnet ( & uo_priv -> net ) , dev_net ( skb -> dev ) ) && uo_priv -> offload -> port == uh -> dest && uo_priv -> offload -> callbacks . gro_receive ) goto unflush ; } goto out_unlock ; unflush : flush = 0 ; for ( p = * head ; p ; p = p -> next ) { if ( ! NAPI_GRO_CB ( p ) -> same_flow ) continue ; uh2 = ( struct udphdr * ) ( p -> data + off ) ; if ( ( * ( u32 * ) & uh -> source != * ( u32 * ) & uh2 -> source ) || ( ! uh -> check ^ ! uh2 -> check ) ) { NAPI_GRO_CB ( p ) -> same_flow = 0 ; continue ; } } skb_gro_pull ( skb , sizeof ( struct udphdr ) ) ; skb_gro_postpull_rcsum ( skb , uh , sizeof ( struct udphdr ) ) ; NAPI_GRO_CB ( skb ) -> proto = uo_priv -> offload -> ipproto ; pp = uo_priv -> offload -> callbacks . gro_receive ( head , skb , uo_priv -> offload ) ; out_unlock : rcu_read_unlock ( ) ; out : NAPI_GRO_CB ( skb ) -> flush |= flush ; return pp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) -> encap_mark <S2SV_ModEnd> || ( skb <S2SV_ModStart> skb ) -> encap_mark <S2SV_ModEnd> = 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16803\n\n```\nCWE-119 static int smacker_decode_tree ( BitstreamContext * bc , HuffContext * hc , uint32_t prefix , int length ) { <S2SV_StartBug> if ( ! bitstream_read_bit ( bc ) ) { <S2SV_EndBug> if ( hc -> current >= 256 ) { av_log ( NULL , AV_LOG_ERROR , \"Tree<S2SV_blank>size<S2SV_blank>exceeded!\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( length ) { hc -> bits [ hc -> current ] = prefix ; hc -> lengths [ hc -> current ] = length ; } else { hc -> bits [ hc -> current ] = 0 ; hc -> lengths [ hc -> current ] = 0 ; } hc -> values [ hc -> current ] = bitstream_read ( bc , 8 ) ; hc -> current ++ ; if ( hc -> maxlength < length ) hc -> maxlength = length ; return 0 ; } else { int r ; length ++ ; r = smacker_decode_tree ( bc , hc , prefix , length ) ; if ( r ) return r ; return smacker_decode_tree ( bc , hc , prefix | ( 1 << ( length - 1 ) ) , length ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( length > SMKTREE_DECODE_MAX_RECURSION ) { av_log ( NULL , AV_LOG_ERROR , \"Maximum<S2SV_blank>tree<S2SV_blank>recursion<S2SV_blank>level<S2SV_blank>exceeded.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 static void veth_setup ( struct net_device * dev ) { <S2SV_StartBug> ether_setup ( dev ) ; <S2SV_EndBug> dev -> netdev_ops = & veth_netdev_ops ; dev -> ethtool_ops = & veth_ethtool_ops ; dev -> features |= NETIF_F_LLTX ; dev -> destructor = veth_dev_free ; dev -> hw_features = NETIF_F_NO_CSUM | NETIF_F_SG | NETIF_F_RXCSUM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( dev ) ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6371\n\n```\nCWE-310 unsigned long lh_char_hash ( const void * k ) { <S2SV_StartBug> unsigned int h = 0 ; <S2SV_EndBug> <S2SV_StartBug> const char * data = ( const char * ) k ; <S2SV_EndBug> while ( * data != 0 ) h = h * 129 + ( unsigned int ) ( * data ++ ) + LH_PRIME ; return h ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> k ) { static volatile int random_seed = - 1 ; if ( random_seed == - 1 ) { int seed ; while ( ( seed = json_c_get_random_seed ( ) ) == - 1 ) ; # if defined __GNUC__ __sync_val_compare_and_swap ( & random_seed , - 1 , seed ) ; # elif defined _MSC_VER InterlockedCompareExchange ( & random_seed , seed , - 1 ) ; # else # warning \"racy<S2SV_blank>random<S2SV_blank>seed<S2SV_blank>initializtion<S2SV_blank>if<S2SV_blank>used<S2SV_blank>by<S2SV_blank>multiple<S2SV_blank>threads\" random_seed = seed ; # endif } return hashlittle ( <S2SV_ModEnd> ( const char <S2SV_ModStart> * ) k , strlen ( ( const char * ) k ) , random_seed ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11502\n\n```\nCWE-59 static void setup_private_mount ( const char * snap_name ) { <S2SV_StartBug> uid_t uid = getuid ( ) ; <S2SV_EndBug> gid_t gid = getgid ( ) ; char tmpdir [ MAX_BUF ] = { 0 } ; sc_must_snprintf ( tmpdir , sizeof ( tmpdir ) , \"/tmp/snap.%s_XXXXXX\" , snap_name ) ; if ( mkdtemp ( tmpdir ) == NULL ) { die ( \"cannot<S2SV_blank>create<S2SV_blank>temporary<S2SV_blank>directory<S2SV_blank>essential<S2SV_blank>for<S2SV_blank>private<S2SV_blank>/tmp\" ) ; } mode_t old_mask = umask ( 0 ) ; char * d = sc_strdup ( tmpdir ) ; sc_must_snprintf ( tmpdir , sizeof ( tmpdir ) , \"%s/tmp\" , d ) ; free ( d ) ; if ( mkdir ( tmpdir , 01777 ) != 0 ) { die ( \"cannot<S2SV_blank>create<S2SV_blank>temporary<S2SV_blank>directory<S2SV_blank>for<S2SV_blank>private<S2SV_blank>/tmp\" ) ; } umask ( old_mask ) ; char * pwd = get_current_dir_name ( ) ; if ( pwd == NULL ) die ( \"cannot<S2SV_blank>get<S2SV_blank>current<S2SV_blank>working<S2SV_blank>directory\" ) ; if ( chdir ( \"/\" ) != 0 ) die ( \"cannot<S2SV_blank>change<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>\\'/\\'\" ) ; sc_do_mount ( tmpdir , \"/tmp\" , NULL , MS_BIND , NULL ) ; sc_do_mount ( \"none\" , \"/tmp\" , NULL , MS_PRIVATE , NULL ) ; <S2SV_StartBug> if ( chown ( \"/tmp/\" , uid , gid ) < 0 ) { <S2SV_EndBug> die ( \"cannot<S2SV_blank>change<S2SV_blank>ownership<S2SV_blank>of<S2SV_blank>/tmp\" ) ; } if ( chdir ( pwd ) != 0 ) die ( \"cannot<S2SV_blank>change<S2SV_blank>current<S2SV_blank>working<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>the<S2SV_blank>original<S2SV_blank>directory\" ) ; free ( pwd ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snap_name ) { <S2SV_ModEnd> char tmpdir [ <S2SV_ModStart> ( \"/tmp/\" , 0 , 0 <S2SV_ModEnd> ) < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 void lxc_execute_bind_init ( struct lxc_conf * conf ) { int ret ; char path [ PATH_MAX ] , destpath [ PATH_MAX ] , * p ; p = choose_init ( conf -> rootfs . mount ) ; if ( p ) { free ( p ) ; return ; } ret = snprintf ( path , PATH_MAX , SBINDIR \"/init.lxc.static\" ) ; if ( ret < 0 || ret >= PATH_MAX ) { WARN ( \"Path<S2SV_blank>name<S2SV_blank>too<S2SV_blank>long<S2SV_blank>searching<S2SV_blank>for<S2SV_blank>lxc.init.static\" ) ; return ; } if ( ! file_exists ( path ) ) { INFO ( \"%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist<S2SV_blank>on<S2SV_blank>host\" , path ) ; return ; } ret = snprintf ( destpath , PATH_MAX , \"%s%s\" , conf -> rootfs . mount , \"/init.lxc.static\" ) ; if ( ret < 0 || ret >= PATH_MAX ) { WARN ( \"Path<S2SV_blank>name<S2SV_blank>too<S2SV_blank>long<S2SV_blank>for<S2SV_blank>container\\'s<S2SV_blank>lxc.init.static\" ) ; return ; } if ( ! file_exists ( destpath ) ) { FILE * pathfile = fopen ( destpath , \"wb\" ) ; if ( ! pathfile ) { SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>mount<S2SV_blank>target<S2SV_blank>\\'%s\\'\" , destpath ) ; return ; } fclose ( pathfile ) ; } <S2SV_StartBug> ret = mount ( path , destpath , \"none\" , MS_BIND , NULL ) ; <S2SV_EndBug> if ( ret < 0 ) SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>bind<S2SV_blank>lxc.init.static<S2SV_blank>into<S2SV_blank>container\" ) ; INFO ( \"lxc.init.static<S2SV_blank>bound<S2SV_blank>into<S2SV_blank>container<S2SV_blank>at<S2SV_blank>%s\" , path ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } ret = safe_mount ( path , destpath , \"none\" , MS_BIND , NULL , conf -> rootfs . mount <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0879\n\n```\nCWE-20 NORET_TYPE void do_exit ( long code ) { struct task_struct * tsk = current ; int group_dead ; profile_task_exit ( tsk ) ; WARN_ON ( atomic_read ( & tsk -> fs_excl ) ) ; if ( unlikely ( in_interrupt ( ) ) ) panic ( \"Aiee,<S2SV_blank>killing<S2SV_blank>interrupt<S2SV_blank>handler!\" ) ; if ( unlikely ( ! tsk -> pid ) ) panic ( \"Attempted<S2SV_blank>to<S2SV_blank>kill<S2SV_blank>the<S2SV_blank>idle<S2SV_blank>task!\" ) ; tracehook_report_exit ( & code ) ; validate_creds_for_do_exit ( tsk ) ; if ( unlikely ( tsk -> flags & PF_EXITING ) ) { printk ( KERN_ALERT \"Fixing<S2SV_blank>recursive<S2SV_blank>fault<S2SV_blank>but<S2SV_blank>reboot<S2SV_blank>is<S2SV_blank>needed!\\\\n\" ) ; tsk -> flags |= PF_EXITPIDONE ; set_current_state ( TASK_UNINTERRUPTIBLE ) ; schedule ( ) ; } exit_irq_thread ( ) ; exit_signals ( tsk ) ; smp_mb ( ) ; spin_unlock_wait ( & tsk -> pi_lock ) ; if ( unlikely ( in_atomic ( ) ) ) printk ( KERN_INFO \"note:<S2SV_blank>%s[%d]<S2SV_blank>exited<S2SV_blank>with<S2SV_blank>preempt_count<S2SV_blank>%d\\\\n\" , current -> comm , task_pid_nr ( current ) , preempt_count ( ) ) ; acct_update_integrals ( tsk ) ; group_dead = atomic_dec_and_test ( & tsk -> signal -> live ) ; if ( group_dead ) { hrtimer_cancel ( & tsk -> signal -> real_timer ) ; exit_itimers ( tsk -> signal ) ; if ( tsk -> mm ) setmax_mm_hiwater_rss ( & tsk -> signal -> maxrss , tsk -> mm ) ; } acct_collect ( code , group_dead ) ; if ( group_dead ) tty_audit_exit ( ) ; if ( unlikely ( tsk -> audit_context ) ) audit_free ( tsk ) ; tsk -> exit_code = code ; taskstats_exit ( tsk , group_dead ) ; exit_mm ( tsk ) ; if ( group_dead ) acct_process ( ) ; trace_sched_process_exit ( tsk ) ; exit_sem ( tsk ) ; exit_files ( tsk ) ; exit_fs ( tsk ) ; check_stack_usage ( ) ; exit_thread ( ) ; cgroup_exit ( tsk , 1 ) ; if ( group_dead && tsk -> signal -> leader ) disassociate_ctty ( 1 ) ; module_put ( task_thread_info ( tsk ) -> exec_domain -> module ) ; proc_exit_connector ( tsk ) ; perf_event_exit_task ( tsk ) ; exit_notify ( tsk , group_dead ) ; # ifdef CONFIG_NUMA mpol_put ( tsk -> mempolicy ) ; tsk -> mempolicy = NULL ; # endif # ifdef CONFIG_FUTEX if ( unlikely ( current -> pi_state_cache ) ) kfree ( current -> pi_state_cache ) ; # endif debug_check_no_locks_held ( tsk ) ; tsk -> flags |= PF_EXITPIDONE ; if ( tsk -> io_context ) <S2SV_StartBug> exit_io_context ( ) ; <S2SV_EndBug> if ( tsk -> splice_pipe ) __free_pipe_info ( tsk -> splice_pipe ) ; validate_creds_for_do_exit ( tsk ) ; preempt_disable ( ) ; exit_rcu ( ) ; tsk -> state = TASK_DEAD ; schedule ( ) ; BUG ( ) ; for ( ; ; ) cpu_relax ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) exit_io_context ( tsk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static bool write_hci_command ( hci_packet_t type , const void * packet , size_t length ) { int sock = socket ( AF_INET , SOCK_STREAM , IPPROTO_TCP ) ; if ( sock == INVALID_FD ) goto error ; struct sockaddr_in addr ; addr . sin_family = AF_INET ; addr . sin_addr . s_addr = htonl ( 0x7F000001 ) ; addr . sin_port = htons ( 8873 ) ; <S2SV_StartBug> if ( connect ( sock , ( const struct sockaddr * ) & addr , sizeof ( addr ) ) == - 1 ) <S2SV_EndBug> goto error ; <S2SV_StartBug> if ( send ( sock , & type , 1 , 0 ) != 1 ) <S2SV_EndBug> goto error ; <S2SV_StartBug> if ( send ( sock , & length , 2 , 0 ) != 2 ) <S2SV_EndBug> goto error ; <S2SV_StartBug> if ( send ( sock , packet , length , 0 ) != ( ssize_t ) length ) <S2SV_EndBug> goto error ; close ( sock ) ; return true ; error : ; close ( sock ) ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> addr ) ) ) <S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) ) <S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> 2 , 0 ) <S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> length , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18204\n\n```\nCWE-000 int ocfs2_setattr ( struct dentry * dentry , struct iattr * attr ) { int status = 0 , size_change ; int inode_locked = 0 ; struct inode * inode = d_inode ( dentry ) ; struct super_block * sb = inode -> i_sb ; struct ocfs2_super * osb = OCFS2_SB ( sb ) ; struct buffer_head * bh = NULL ; handle_t * handle = NULL ; struct dquot * transfer_to [ MAXQUOTAS ] = { } ; int qtype ; int had_lock ; struct ocfs2_lock_holder oh ; trace_ocfs2_setattr ( inode , dentry , ( unsigned long long ) OCFS2_I ( inode ) -> ip_blkno , dentry -> d_name . len , dentry -> d_name . name , attr -> ia_valid , attr -> ia_mode , from_kuid ( & init_user_ns , attr -> ia_uid ) , from_kgid ( & init_user_ns , attr -> ia_gid ) ) ; if ( S_ISLNK ( inode -> i_mode ) ) attr -> ia_valid &= ~ ATTR_SIZE ; # define OCFS2_VALID_ATTRS ( ATTR_ATIME | ATTR_MTIME | ATTR_CTIME | ATTR_SIZE | ATTR_GID | ATTR_UID | ATTR_MODE ) if ( ! ( attr -> ia_valid & OCFS2_VALID_ATTRS ) ) return 0 ; status = setattr_prepare ( dentry , attr ) ; if ( status ) return status ; if ( is_quota_modification ( inode , attr ) ) { status = dquot_initialize ( inode ) ; if ( status ) return status ; } size_change = S_ISREG ( inode -> i_mode ) && attr -> ia_valid & ATTR_SIZE ; if ( size_change ) { <S2SV_StartBug> status = ocfs2_rw_lock ( inode , 1 ) ; <S2SV_EndBug> if ( status < 0 ) { mlog_errno ( status ) ; goto bail ; } } had_lock = ocfs2_inode_lock_tracker ( inode , & bh , 1 , & oh ) ; if ( had_lock < 0 ) { status = had_lock ; goto bail_unlock_rw ; } else if ( had_lock ) { mlog ( ML_ERROR , \"Another<S2SV_blank>case<S2SV_blank>of<S2SV_blank>recursive<S2SV_blank>locking:\\\\n\" ) ; dump_stack ( ) ; } inode_locked = 1 ; if ( size_change ) { status = inode_newsize_ok ( inode , attr -> ia_size ) ; if ( status ) <S2SV_StartBug> goto bail_unlock ; <S2SV_EndBug> inode_dio_wait ( inode ) ; if ( i_size_read ( inode ) >= attr -> ia_size ) { if ( ocfs2_should_order_data ( inode ) ) { status = ocfs2_begin_ordered_truncate ( inode , attr -> ia_size ) ; if ( status ) goto bail_unlock ; } status = ocfs2_truncate_file ( inode , bh , attr -> ia_size ) ; } else status = ocfs2_extend_file ( inode , bh , attr -> ia_size ) ; if ( status < 0 ) { if ( status != - ENOSPC ) mlog_errno ( status ) ; status = - ENOSPC ; goto bail_unlock ; } } if ( ( attr -> ia_valid & ATTR_UID && ! uid_eq ( attr -> ia_uid , inode -> i_uid ) ) || ( attr -> ia_valid & ATTR_GID && ! gid_eq ( attr -> ia_gid , inode -> i_gid ) ) ) { if ( attr -> ia_valid & ATTR_UID && ! uid_eq ( attr -> ia_uid , inode -> i_uid ) && OCFS2_HAS_RO_COMPAT_FEATURE ( sb , OCFS2_FEATURE_RO_COMPAT_USRQUOTA ) ) { transfer_to [ USRQUOTA ] = dqget ( sb , make_kqid_uid ( attr -> ia_uid ) ) ; if ( IS_ERR ( transfer_to [ USRQUOTA ] ) ) { status = PTR_ERR ( transfer_to [ USRQUOTA ] ) ; goto bail_unlock ; } } if ( attr -> ia_valid & ATTR_GID && ! gid_eq ( attr -> ia_gid , inode -> i_gid ) && OCFS2_HAS_RO_COMPAT_FEATURE ( sb , OCFS2_FEATURE_RO_COMPAT_GRPQUOTA ) ) { transfer_to [ GRPQUOTA ] = dqget ( sb , make_kqid_gid ( attr -> ia_gid ) ) ; if ( IS_ERR ( transfer_to [ GRPQUOTA ] ) ) { status = PTR_ERR ( transfer_to [ GRPQUOTA ] ) ; goto bail_unlock ; } } handle = ocfs2_start_trans ( osb , OCFS2_INODE_UPDATE_CREDITS + 2 * ocfs2_quota_trans_credits ( sb ) ) ; if ( IS_ERR ( handle ) ) { status = PTR_ERR ( handle ) ; mlog_errno ( status ) ; goto bail_unlock ; } status = __dquot_transfer ( inode , transfer_to ) ; if ( status < 0 ) goto bail_commit ; } else { handle = ocfs2_start_trans ( osb , OCFS2_INODE_UPDATE_CREDITS ) ; if ( IS_ERR ( handle ) ) { status = PTR_ERR ( handle ) ; mlog_errno ( status ) ; goto bail_unlock ; } } setattr_copy ( inode , attr ) ; mark_inode_dirty ( inode ) ; status = ocfs2_mark_inode_dirty ( handle , inode , bh ) ; if ( status < 0 ) mlog_errno ( status ) ; bail_commit : ocfs2_commit_trans ( osb , handle ) ; bail_unlock : if ( status && inode_locked ) { ocfs2_inode_unlock_tracker ( inode , 1 , & oh , had_lock ) ; inode_locked = 0 ; } bail_unlock_rw : if ( size_change ) ocfs2_rw_unlock ( inode , 1 ) ; bail : for ( qtype = 0 ; qtype < OCFS2_MAXQUOTAS ; qtype ++ ) dqput ( transfer_to [ qtype ] ) ; if ( ! status && attr -> ia_valid & ATTR_MODE ) { status = ocfs2_acl_chmod ( inode , bh ) ; if ( status < 0 ) mlog_errno ( status ) ; } if ( inode_locked ) ocfs2_inode_unlock_tracker ( inode , 1 , & oh , had_lock ) ; brelse ( bh ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_change ) { inode_dio_wait ( inode ) ; <S2SV_ModStart> ) goto bail_unlock <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-119 GPLOT * gplotRead ( const char * filename ) { <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> char * rootname , * title , * xlabel , * ylabel , * ignores ; l_int32 outformat , ret , version , ignore ; FILE * fp ; GPLOT * gplot ; PROCNAME ( \"gplotRead\" ) ; if ( ! filename ) return ( GPLOT * ) ERROR_PTR ( \"filename<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( ( fp = fopenReadStream ( filename ) ) == NULL ) return ( GPLOT * ) ERROR_PTR ( \"stream<S2SV_blank>not<S2SV_blank>opened\" , procName , NULL ) ; ret = fscanf ( fp , \"Gplot<S2SV_blank>Version<S2SV_blank>%d\\\\n\" , & version ) ; if ( ret != 1 ) { fclose ( fp ) ; return ( GPLOT * ) ERROR_PTR ( \"not<S2SV_blank>a<S2SV_blank>gplot<S2SV_blank>file\" , procName , NULL ) ; } if ( version != GPLOT_VERSION_NUMBER ) { fclose ( fp ) ; return ( GPLOT * ) ERROR_PTR ( \"invalid<S2SV_blank>gplot<S2SV_blank>version\" , procName , NULL ) ; } <S2SV_StartBug> ignore = fscanf ( fp , \"Rootname:<S2SV_blank>%s\\\\n\" , buf ) ; <S2SV_EndBug> rootname = stringNew ( buf ) ; ignore = fscanf ( fp , \"Output<S2SV_blank>format:<S2SV_blank>%d\\\\n\" , & outformat ) ; <S2SV_StartBug> ignores = fgets ( buf , L_BUF_SIZE , fp ) ; <S2SV_EndBug> title = stringNew ( buf + 7 ) ; title [ strlen ( title ) - 1 ] = '\\\\0' ; <S2SV_StartBug> ignores = fgets ( buf , L_BUF_SIZE , fp ) ; <S2SV_EndBug> xlabel = stringNew ( buf + 14 ) ; xlabel [ strlen ( xlabel ) - 1 ] = '\\\\0' ; <S2SV_StartBug> ignores = fgets ( buf , L_BUF_SIZE , fp ) ; <S2SV_EndBug> ylabel = stringNew ( buf + 14 ) ; ylabel [ strlen ( ylabel ) - 1 ] = '\\\\0' ; gplot = gplotCreate ( rootname , outformat , title , xlabel , ylabel ) ; LEPT_FREE ( rootname ) ; LEPT_FREE ( title ) ; LEPT_FREE ( xlabel ) ; LEPT_FREE ( ylabel ) ; if ( ! gplot ) { fclose ( fp ) ; return ( GPLOT * ) ERROR_PTR ( \"gplot<S2SV_blank>not<S2SV_blank>made\" , procName , NULL ) ; } sarrayDestroy ( & gplot -> cmddata ) ; sarrayDestroy ( & gplot -> datanames ) ; sarrayDestroy ( & gplot -> plotdata ) ; sarrayDestroy ( & gplot -> plottitles ) ; numaDestroy ( & gplot -> plotstyles ) ; <S2SV_StartBug> ignore = fscanf ( fp , \"Commandfile<S2SV_blank>name:<S2SV_blank>%s\\\\n\" , buf ) ; <S2SV_EndBug> stringReplace ( & gplot -> cmdname , buf ) ; ignore = fscanf ( fp , \"\\\\nCommandfile<S2SV_blank>data:\" ) ; gplot -> cmddata = sarrayReadStream ( fp ) ; ignore = fscanf ( fp , \"\\\\nDatafile<S2SV_blank>names:\" ) ; gplot -> datanames = sarrayReadStream ( fp ) ; ignore = fscanf ( fp , \"\\\\nPlot<S2SV_blank>data:\" ) ; gplot -> plotdata = sarrayReadStream ( fp ) ; ignore = fscanf ( fp , \"\\\\nPlot<S2SV_blank>titles:\" ) ; gplot -> plottitles = sarrayReadStream ( fp ) ; ignore = fscanf ( fp , \"\\\\nPlot<S2SV_blank>styles:\" ) ; gplot -> plotstyles = numaReadStream ( fp ) ; ignore = fscanf ( fp , \"Number<S2SV_blank>of<S2SV_blank>plots:<S2SV_blank>%d\\\\n\" , & gplot -> nplots ) ; <S2SV_StartBug> ignore = fscanf ( fp , \"Output<S2SV_blank>file<S2SV_blank>name:<S2SV_blank>%s\\\\n\" , buf ) ; <S2SV_EndBug> stringReplace ( & gplot -> outname , buf ) ; ignore = fscanf ( fp , \"Axis<S2SV_blank>scaling:<S2SV_blank>%d\\\\n\" , & gplot -> scaling ) ; fclose ( fp ) ; return gplot ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( fp , \"Rootname:<S2SV_blank>%511s\\\\n\" <S2SV_ModEnd> , buf ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , fp ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , fp ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , fp ) <S2SV_ModStart> ( fp , \"Commandfile<S2SV_blank>name:<S2SV_blank>%511s\\\\n\" <S2SV_ModEnd> , buf ) <S2SV_ModStart> ( fp , \"Output<S2SV_blank>file<S2SV_blank>name:<S2SV_blank>%511s\\\\n\" <S2SV_ModEnd> , buf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2016\n\n```\nCWE-269 void virtio_config_writeb ( VirtIODevice * vdev , uint32_t addr , uint32_t data ) { VirtioDeviceClass * k = VIRTIO_DEVICE_GET_CLASS ( vdev ) ; uint8_t val = data ; <S2SV_StartBug> if ( addr > ( vdev -> config_len - sizeof ( val ) ) ) <S2SV_EndBug> return ; stb_p ( vdev -> config + addr , val ) ; if ( k -> set_config ) { k -> set_config ( vdev , vdev -> config ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( addr + <S2SV_ModEnd> sizeof ( val <S2SV_ModStart> ( val ) > vdev -> config_len ) { return ; } <S2SV_ModEnd> stb_p ( vdev\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6978\n\n```\nCWE-415 void gdImageGifCtx ( gdImagePtr im , gdIOCtxPtr out ) { <S2SV_StartBug> gdImagePtr pim = 0 , tim = im ; <S2SV_EndBug> int interlace , BitsPerPixel ; interlace = im -> interlace ; if ( im -> trueColor ) { <S2SV_StartBug> pim = gdImageCreatePaletteFromTrueColor ( im , 1 , 256 ) ; <S2SV_EndBug> if ( ! pim ) { return ; } tim = pim ; } BitsPerPixel = colorstobpp ( tim -> colorsTotal ) ; GIFEncode ( out , tim -> sx , tim -> sy , tim -> interlace , 0 , tim -> transparent , BitsPerPixel , tim -> red , tim -> green , tim -> blue , tim ) ; if ( pim ) { gdImageDestroy ( pim ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ) { _gdImageGifCtx <S2SV_ModEnd> ( im , <S2SV_ModStart> ( im , out <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7500\n\n```\nCWE-59 int rpmPackageFilesInstall ( rpmts ts , rpmte te , rpmfiles files , rpmpsm psm , char * * failedFile ) { FD_t payload = rpmtePayload ( te ) ; rpmfi fi = rpmfiNewArchiveReader ( payload , files , RPMFI_ITER_READ_ARCHIVE ) ; rpmfs fs = rpmteGetFileStates ( te ) ; rpmPlugins plugins = rpmtsPlugins ( ts ) ; struct stat sb ; int saveerrno = errno ; int rc = 0 ; int nodigest = ( rpmtsFlags ( ts ) & RPMTRANS_FLAG_NOFILEDIGEST ) ? 1 : 0 ; int nofcaps = ( rpmtsFlags ( ts ) & RPMTRANS_FLAG_NOCAPS ) ? 1 : 0 ; int firsthardlink = - 1 ; int skip ; rpmFileAction action ; char * tid = NULL ; const char * suffix ; char * fpath = NULL ; if ( fi == NULL ) { rc = RPMERR_BAD_MAGIC ; goto exit ; } rasprintf ( & tid , \";%08x\" , ( unsigned ) rpmtsGetTid ( ts ) ) ; rc = fsmMkdirs ( files , fs , plugins ) ; while ( ! rc ) { rc = rpmfiNext ( fi ) ; if ( rc < 0 ) { if ( rc == RPMERR_ITER_END ) rc = 0 ; break ; } action = rpmfsGetAction ( fs , rpmfiFX ( fi ) ) ; skip = XFA_SKIPPING ( action ) ; suffix = S_ISDIR ( rpmfiFMode ( fi ) ) ? NULL : tid ; if ( action != FA_TOUCH ) { fpath = fsmFsPath ( fi , suffix ) ; } else { fpath = fsmFsPath ( fi , \"\" ) ; } rc = rpmfiStat ( fi , 1 , & sb ) ; fsmDebug ( fpath , action , & sb ) ; if ( rc ) break ; rc = rpmpluginsCallFsmFilePre ( plugins , fi , fpath , sb . st_mode , action ) ; if ( rc ) { skip = 1 ; } else { setFileState ( fs , rpmfiFX ( fi ) ) ; } if ( ! skip ) { int setmeta = 1 ; if ( ! suffix ) { rc = fsmBackup ( fi , action ) ; } if ( ! suffix ) { <S2SV_StartBug> rc = fsmVerify ( fpath , fi ) ; <S2SV_EndBug> } else { rc = ( action == FA_TOUCH ) ? 0 : RPMERR_ENOENT ; } if ( S_ISREG ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMkfile ( fi , fpath , files , psm , nodigest , & setmeta , & firsthardlink ) ; } } else if ( S_ISDIR ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { mode_t mode = sb . st_mode ; mode &= ~ 07777 ; mode |= 00700 ; rc = fsmMkdir ( fpath , mode ) ; } } else if ( S_ISLNK ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmSymlink ( rpmfiFLink ( fi ) , fpath ) ; } } else if ( S_ISFIFO ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMkfifo ( fpath , 0000 ) ; } } else if ( S_ISCHR ( sb . st_mode ) || S_ISBLK ( sb . st_mode ) || S_ISSOCK ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMknod ( fpath , sb . st_mode , sb . st_rdev ) ; } } else { if ( ! IS_DEV_LOG ( fpath ) ) rc = RPMERR_UNKNOWN_FILETYPE ; } if ( ! rc && setmeta ) { rc = fsmSetmeta ( fpath , fi , plugins , action , & sb , nofcaps ) ; } } else if ( firsthardlink >= 0 && rpmfiArchiveHasContent ( fi ) ) { char * fn = rpmfilesFN ( files , firsthardlink ) ; rc = expandRegular ( fi , fn , psm , 0 , nodigest , 0 ) ; firsthardlink = - 1 ; free ( fn ) ; } if ( rc ) { if ( ! skip ) { if ( suffix && ( action != FA_TOUCH ) ) { ( void ) fsmRemove ( fpath , sb . st_mode ) ; } errno = saveerrno ; } } else { rpmpsmNotify ( psm , RPMCALLBACK_INST_PROGRESS , rpmfiArchiveTell ( fi ) ) ; if ( ! skip ) { if ( suffix ) rc = fsmBackup ( fi , action ) ; if ( ! rc ) rc = fsmCommit ( & fpath , fi , action , suffix ) ; } } if ( rc ) * failedFile = xstrdup ( fpath ) ; rpmpluginsCallFsmFilePost ( plugins , fi , fpath , sb . st_mode , action , rc ) ; fpath = _free ( fpath ) ; } rpmswAdd ( rpmtsOp ( ts , RPMTS_OP_UNCOMPRESS ) , fdOp ( payload , FDSTAT_READ ) ) ; rpmswAdd ( rpmtsOp ( ts , RPMTS_OP_DIGEST ) , fdOp ( payload , FDSTAT_DIGEST ) ) ; exit : rpmfiArchiveClose ( fi ) ; rpmfiFree ( fi ) ; Fclose ( payload ) ; free ( tid ) ; free ( fpath ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fpath , fi , & sb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1791\n\n```\nCWE-362 int ssl3_get_new_session_ticket ( SSL * s ) { int ok , al , ret = 0 , ticklen ; long n ; const unsigned char * p ; unsigned char * d ; n = s -> method -> ssl_get_message ( s , SSL3_ST_CR_SESSION_TICKET_A , SSL3_ST_CR_SESSION_TICKET_B , SSL3_MT_NEWSESSION_TICKET , 16384 , & ok ) ; if ( ! ok ) return ( ( int ) n ) ; if ( n < 6 ) { al = SSL_AD_DECODE_ERROR ; SSLerr ( SSL_F_SSL3_GET_NEW_SESSION_TICKET , SSL_R_LENGTH_MISMATCH ) ; goto f_err ; } p = d = ( unsigned char * ) s -> init_msg ; <S2SV_StartBug> n2l ( p , s -> session -> tlsext_tick_lifetime_hint ) ; <S2SV_EndBug> n2s ( p , ticklen ) ; if ( ticklen + 6 != n ) { al = SSL_AD_DECODE_ERROR ; SSLerr ( SSL_F_SSL3_GET_NEW_SESSION_TICKET , SSL_R_LENGTH_MISMATCH ) ; goto f_err ; } OPENSSL_free ( s -> session -> tlsext_tick ) ; s -> session -> tlsext_ticklen = 0 ; s -> session -> tlsext_tick = OPENSSL_malloc ( ticklen ) ; if ( ! s -> session -> tlsext_tick ) { SSLerr ( SSL_F_SSL3_GET_NEW_SESSION_TICKET , ERR_R_MALLOC_FAILURE ) ; goto err ; } memcpy ( s -> session -> tlsext_tick , p , ticklen ) ; s -> session -> tlsext_ticklen = ticklen ; EVP_Digest ( p , ticklen , s -> session -> session_id , & s -> session -> session_id_length , EVP_sha256 ( ) , NULL ) ; ret = 1 ; return ( ret ) ; f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : s -> state = SSL_ST_ERR ; return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> init_msg ; if ( s -> session -> session_id_length > 0 ) { int i = s -> session_ctx -> session_cache_mode ; SSL_SESSION * new_sess ; if ( i & SSL_SESS_CACHE_CLIENT ) { if ( i & SSL_SESS_CACHE_NO_INTERNAL_STORE ) { if ( s -> session_ctx -> remove_session_cb != NULL ) s -> session_ctx -> remove_session_cb ( s -> session_ctx , s -> session ) ; } else { SSL_CTX_remove_session ( s -> session_ctx , s -> session ) ; } } if ( ( new_sess = ssl_session_dup ( s -> session , 0 ) ) == 0 ) { al = SSL_AD_INTERNAL_ERROR ; SSLerr ( SSL_F_SSL3_GET_NEW_SESSION_TICKET , ERR_R_MALLOC_FAILURE ) ; goto f_err ; } SSL_SESSION_free ( s -> session ) ; s -> session = new_sess ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 asmlinkage void kernel_unaligned_trap ( struct pt_regs * regs , unsigned int insn ) { enum direction dir = decode_direction ( insn ) ; int size = decode_access_size ( insn ) ; if ( ! ok_for_kernel ( insn ) || dir == both ) { printk ( \"Unsupported<S2SV_blank>unaligned<S2SV_blank>load/store<S2SV_blank>trap<S2SV_blank>for<S2SV_blank>kernel<S2SV_blank>at<S2SV_blank><%08lx>.\\\\n\" , regs -> pc ) ; unaligned_panic ( \"Wheee.<S2SV_blank>Kernel<S2SV_blank>does<S2SV_blank>fpu/atomic<S2SV_blank>unaligned<S2SV_blank>load/store.\" ) ; } else { unsigned long addr = compute_effective_address ( regs , insn ) ; int err ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 , 0 , regs , addr ) ; <S2SV_EndBug> switch ( dir ) { case load : err = do_int_load ( fetch_reg_addr ( ( ( insn >> 25 ) & 0x1f ) , regs ) , size , ( unsigned long * ) addr , decode_signedness ( insn ) ) ; break ; case store : err = do_int_store ( ( ( insn >> 25 ) & 0x1f ) , size , ( unsigned long * ) addr , regs ) ; break ; default : panic ( \"Impossible<S2SV_blank>kernel<S2SV_blank>unaligned<S2SV_blank>trap.\" ) ; } if ( err ) kernel_mna_trap_fault ( regs , insn ) ; else advance ( regs ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5547\n\n```\nCWE-119 static enum led_brightness k90_backlight_get ( struct led_classdev * led_cdev ) { int ret ; struct k90_led * led = container_of ( led_cdev , struct k90_led , cdev ) ; struct device * dev = led -> cdev . dev -> parent ; struct usb_interface * usbif = to_usb_interface ( dev -> parent ) ; struct usb_device * usbdev = interface_to_usbdev ( usbif ) ; int brightness ; <S2SV_StartBug> char data [ 8 ] ; <S2SV_EndBug> ret = usb_control_msg ( usbdev , usb_rcvctrlpipe ( usbdev , 0 ) , K90_REQUEST_STATUS , USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE , 0 , 0 , data , 8 , USB_CTRL_SET_TIMEOUT ) ; if ( ret < 0 ) { dev_warn ( dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>K90<S2SV_blank>initial<S2SV_blank>state<S2SV_blank>(error<S2SV_blank>%d).\\\\n\" , ret ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> } brightness = data [ 4 ] ; if ( brightness < 0 || brightness > 3 ) { dev_warn ( dev , \"Read<S2SV_blank>invalid<S2SV_blank>backlight<S2SV_blank>brightness:<S2SV_blank>%02hhx.\\\\n\" , data [ 4 ] ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return brightness ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> brightness ; char * data ; data = kmalloc ( 8 , GFP_KERNEL ) ; if ( ! data ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> ret ) ; ret = - EIO ; goto out <S2SV_ModEnd> ; } brightness <S2SV_ModStart> ] ) ; ret = <S2SV_ModEnd> - EIO ; <S2SV_ModStart> - EIO ; goto out ; } ret = brightness ; out : kfree ( data ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10129\n\n```\nCWE-476 static int parse_report ( transport_smart * transport , git_push * push ) { git_pkt * pkt = NULL ; const char * line_end = NULL ; gitno_buffer * buf = & transport -> buffer ; int error , recvd ; git_buf data_pkt_buf = GIT_BUF_INIT ; for ( ; ; ) { if ( buf -> offset > 0 ) error = git_pkt_parse_line ( & pkt , buf -> data , & line_end , buf -> offset ) ; else error = GIT_EBUFS ; if ( error < 0 && error != GIT_EBUFS ) { error = - 1 ; goto done ; } if ( error == GIT_EBUFS ) { if ( ( recvd = gitno_recv ( buf ) ) < 0 ) { error = recvd ; goto done ; } if ( recvd == 0 ) { giterr_set ( GITERR_NET , \"early<S2SV_blank>EOF\" ) ; error = GIT_EEOF ; goto done ; } continue ; } gitno_consume ( buf , line_end ) ; <S2SV_StartBug> error = 0 ; <S2SV_EndBug> if ( pkt == NULL ) continue ; switch ( pkt -> type ) { case GIT_PKT_DATA : error = add_push_report_sideband_pkt ( push , ( git_pkt_data * ) pkt , & data_pkt_buf ) ; break ; case GIT_PKT_ERR : giterr_set ( GITERR_NET , \"report-status:<S2SV_blank>Error<S2SV_blank>reported:<S2SV_blank>%s\" , ( ( git_pkt_err * ) pkt ) -> error ) ; error = - 1 ; break ; case GIT_PKT_PROGRESS : if ( transport -> progress_cb ) { git_pkt_progress * p = ( git_pkt_progress * ) pkt ; error = transport -> progress_cb ( p -> data , p -> len , transport -> message_cb_payload ) ; } break ; default : error = add_push_report_pkt ( push , pkt ) ; break ; } git_pkt_free ( pkt ) ; if ( error == GIT_ITEROVER ) { error = 0 ; if ( data_pkt_buf . size > 0 ) { giterr_set ( GITERR_NET , \"Incomplete<S2SV_blank>pack<S2SV_blank>data<S2SV_blank>pkt-line\" ) ; error = GIT_ERROR ; } goto done ; } if ( error < 0 ) { goto done ; } } done : git_buf_free ( & data_pkt_buf ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error = 0 <S2SV_ModEnd> ; switch (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-78 enum ImapAuthRes imap_auth_login ( struct ImapData * idata , const char * method ) { char q_user [ SHORT_STRING ] , q_pass [ SHORT_STRING ] ; char buf [ STRING ] ; int rc ; if ( mutt_bit_isset ( idata -> capabilities , LOGINDISABLED ) ) { mutt_message ( _ ( \"LOGIN<S2SV_blank>disabled<S2SV_blank>on<S2SV_blank>this<S2SV_blank>server.\" ) ) ; return IMAP_AUTH_UNAVAIL ; } if ( mutt_account_getuser ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; if ( mutt_account_getpass ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; mutt_message ( _ ( \"Logging<S2SV_blank>in...\" ) ) ; <S2SV_StartBug> imap_quote_string ( q_user , sizeof ( q_user ) , idata -> conn -> account . user ) ; <S2SV_EndBug> <S2SV_StartBug> imap_quote_string ( q_pass , sizeof ( q_pass ) , idata -> conn -> account . pass ) ; <S2SV_EndBug> if ( DebugLevel < IMAP_LOG_PASS ) mutt_debug ( 2 , \"Sending<S2SV_blank>LOGIN<S2SV_blank>command<S2SV_blank>for<S2SV_blank>%s...\\\\n\" , idata -> conn -> account . user ) ; snprintf ( buf , sizeof ( buf ) , \"LOGIN<S2SV_blank>%s<S2SV_blank>%s\" , q_user , q_pass ) ; rc = imap_exec ( idata , buf , IMAP_CMD_FAIL_OK | IMAP_CMD_PASS ) ; if ( ! rc ) { mutt_clear_error ( ) ; return IMAP_AUTH_SUCCESS ; } mutt_error ( _ ( \"Login<S2SV_blank>failed.\" ) ) ; return IMAP_AUTH_FAILURE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> account . user , false <S2SV_ModStart> account . pass , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0216\n\n```\nCWE-20 static int xen_netbk_get_extras ( struct xenvif * vif , struct xen_netif_extra_info * extras , int work_to_do ) { struct xen_netif_extra_info extra ; RING_IDX cons = vif -> tx . req_cons ; do { if ( unlikely ( work_to_do -- <= 0 ) ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"Missing<S2SV_blank>extra<S2SV_blank>info\\\\n\" ) ; <S2SV_EndBug> return - EBADR ; } memcpy ( & extra , RING_GET_REQUEST ( & vif -> tx , cons ) , sizeof ( extra ) ) ; if ( unlikely ( ! extra . type || extra . type >= XEN_NETIF_EXTRA_TYPE_MAX ) ) { vif -> tx . req_cons = ++ cons ; <S2SV_StartBug> netdev_dbg ( vif -> dev , <S2SV_EndBug> <S2SV_StartBug> \"Invalid<S2SV_blank>extra<S2SV_blank>type:<S2SV_blank>%d\\\\n\" , extra . type ) ; <S2SV_EndBug> return - EINVAL ; } memcpy ( & extras [ extra . type - 1 ] , & extra , sizeof ( extra ) ) ; vif -> tx . req_cons = ++ cons ; } while ( extra . flags & XEN_NETIF_EXTRA_FLAG_MORE ) ; return work_to_do ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> dev , \"Missing<S2SV_blank>extra<S2SV_blank>info\\\\n\" ) ; netbk_fatal_tx_err ( vif <S2SV_ModStart> ++ cons ; netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> extra . type ) ; netbk_fatal_tx_err ( vif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6262\n\n```\nCWE-134 int print_calc ( image_desc_t * im ) { long i , ii , validsteps ; double printval ; struct tm tmvdef ; int graphelement = 0 ; long vidx ; int max_ii ; double magfact = - 1 ; char * si_symb = \"\" ; char * percent_s ; int prline_cnt = 0 ; time_t now = time ( NULL ) ; localtime_r ( & now , & tmvdef ) ; for ( i = 0 ; i < im -> gdes_c ; i ++ ) { vidx = im -> gdes [ i ] . vidx ; switch ( im -> gdes [ i ] . gf ) { case GF_PRINT : case GF_GPRINT : if ( im -> gdes [ vidx ] . gf == GF_VDEF ) { printval = im -> gdes [ vidx ] . vf . val ; localtime_r ( & im -> gdes [ vidx ] . vf . when , & tmvdef ) ; } else { max_ii = ( ( im -> gdes [ vidx ] . end - im -> gdes [ vidx ] . start ) / im -> gdes [ vidx ] . step * im -> gdes [ vidx ] . ds_cnt ) ; printval = DNAN ; validsteps = 0 ; for ( ii = im -> gdes [ vidx ] . ds ; ii < max_ii ; ii += im -> gdes [ vidx ] . ds_cnt ) { if ( ! finite ( im -> gdes [ vidx ] . data [ ii ] ) ) continue ; if ( isnan ( printval ) ) { printval = im -> gdes [ vidx ] . data [ ii ] ; validsteps ++ ; continue ; } switch ( im -> gdes [ i ] . cf ) { case CF_HWPREDICT : case CF_MHWPREDICT : case CF_DEVPREDICT : case CF_DEVSEASONAL : case CF_SEASONAL : case CF_AVERAGE : validsteps ++ ; printval += im -> gdes [ vidx ] . data [ ii ] ; break ; case CF_MINIMUM : printval = min ( printval , im -> gdes [ vidx ] . data [ ii ] ) ; break ; case CF_FAILURES : case CF_MAXIMUM : printval = max ( printval , im -> gdes [ vidx ] . data [ ii ] ) ; break ; case CF_LAST : printval = im -> gdes [ vidx ] . data [ ii ] ; } } if ( im -> gdes [ i ] . cf == CF_AVERAGE || im -> gdes [ i ] . cf > CF_LAST ) { if ( validsteps > 1 ) { printval = ( printval / validsteps ) ; } } } if ( ! im -> gdes [ i ] . strftm && ( percent_s = strstr ( im -> gdes [ i ] . format , \"%S\" ) ) != NULL ) { if ( magfact < 0.0 ) { auto_scale ( im , & printval , & si_symb , & magfact ) ; if ( printval == 0.0 ) magfact = - 1.0 ; } else { printval /= magfact ; } * ( ++ percent_s ) = 's' ; } else if ( ! im -> gdes [ i ] . strftm && strstr ( im -> gdes [ i ] . format , \"%s\" ) != NULL ) { auto_scale ( im , & printval , & si_symb , & magfact ) ; } if ( im -> gdes [ i ] . gf == GF_PRINT ) { rrd_infoval_t prline ; if ( im -> gdes [ i ] . strftm ) { prline . u_str = ( char * ) malloc ( ( FMT_LEG_LEN + 2 ) * sizeof ( char ) ) ; strftime ( prline . u_str , FMT_LEG_LEN , im -> gdes [ i ] . format , & tmvdef ) ; <S2SV_StartBug> } else if ( bad_format ( im -> gdes [ i ] . format ) ) { <S2SV_EndBug> <S2SV_StartBug> rrd_set_error <S2SV_EndBug> ( \"bad<S2SV_blank>format<S2SV_blank>for<S2SV_blank>PRINT<S2SV_blank>in<S2SV_blank>\\'%s\\'\" , im -> gdes [ i ] . format ) ; return - 1 ; } else { prline . u_str = sprintf_alloc ( im -> gdes [ i ] . format , printval , si_symb ) ; } grinfo_push ( im , sprintf_alloc ( \"print[%ld]\" , prline_cnt ++ ) , RD_I_STR , prline ) ; free ( prline . u_str ) ; } else { if ( im -> gdes [ i ] . strftm ) { strftime ( im -> gdes [ i ] . legend , FMT_LEG_LEN , im -> gdes [ i ] . format , & tmvdef ) ; } else { <S2SV_StartBug> if ( bad_format ( im -> gdes [ i ] . format ) ) { <S2SV_EndBug> <S2SV_StartBug> rrd_set_error <S2SV_EndBug> ( \"bad<S2SV_blank>format<S2SV_blank>for<S2SV_blank>GPRINT<S2SV_blank>in<S2SV_blank>\\'%s\\'\" , im -> gdes [ i ] . format ) ; return - 1 ; } # ifdef HAVE_SNPRINTF snprintf ( im -> gdes [ i ] . legend , FMT_LEG_LEN - 2 , im -> gdes [ i ] . format , printval , si_symb ) ; # else sprintf ( im -> gdes [ i ] . legend , im -> gdes [ i ] . format , printval , si_symb ) ; # endif } graphelement = 1 ; } break ; case GF_LINE : case GF_AREA : case GF_TICK : graphelement = 1 ; break ; case GF_HRULE : if ( isnan ( im -> gdes [ i ] . yrule ) ) { im -> gdes [ i ] . yrule = im -> gdes [ vidx ] . vf . val ; } ; graphelement = 1 ; break ; case GF_VRULE : if ( im -> gdes [ i ] . xrule == 0 ) { im -> gdes [ i ] . xrule = im -> gdes [ vidx ] . vf . when ; } ; graphelement = 1 ; break ; case GF_COMMENT : case GF_TEXTALIGN : case GF_DEF : case GF_CDEF : case GF_VDEF : # ifdef WITH_PIECHART case GF_PART : # endif case GF_SHIFT : case GF_XPORT : break ; case GF_STACK : rrd_set_error ( \"STACK<S2SV_blank>should<S2SV_blank>already<S2SV_blank>be<S2SV_blank>turned<S2SV_blank>into<S2SV_blank>LINE<S2SV_blank>or<S2SV_blank>AREA<S2SV_blank>here\" ) ; return - 1 ; break ; } } return graphelement ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> else if ( bad_format_print <S2SV_ModEnd> ( im -> <S2SV_ModStart> ) ) { <S2SV_ModEnd> return - 1 <S2SV_ModStart> { if ( bad_format_print <S2SV_ModEnd> ( im -> <S2SV_ModStart> ) ) { <S2SV_ModEnd> return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9717\n\n```\nCWE-284 void __detach_mounts ( struct dentry * dentry ) { struct mountpoint * mp ; struct mount * mnt ; namespace_lock ( ) ; mp = lookup_mountpoint ( dentry ) ; if ( ! mp ) goto out_unlock ; lock_mount_hash ( ) ; while ( ! hlist_empty ( & mp -> m_list ) ) { mnt = hlist_entry ( mp -> m_list . first , struct mount , mnt_mp_list ) ; <S2SV_StartBug> umount_tree ( mnt , 0 ) ; <S2SV_EndBug> } unlock_mount_hash ( ) ; put_mountpoint ( mp ) ; out_unlock : namespace_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mnt_mp_list ) ; if ( mnt -> mnt . mnt_flags & MNT_UMOUNT ) { struct mount * p , * tmp ; list_for_each_entry_safe ( p , tmp , & mnt -> mnt_mounts , mnt_child ) { hlist_add_head ( & p -> mnt_umount . s_list , & unmounted ) ; umount_mnt ( p ) ; } } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-444(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7670\n\n```\nCWE-444 agooCon agoo_con_create ( agooErr err , int sock , uint64_t id , agooBind b ) { agooCon c ; if ( NULL == ( c = ( agooCon ) AGOO_CALLOC ( 1 , sizeof ( struct _agooCon ) ) ) ) { AGOO_ERR_MEM ( err , \"Connection\" ) ; } else { <S2SV_StartBug> c -> sock = sock ; <S2SV_EndBug> c -> id = id ; c -> timeout = dtime ( ) + CON_TIMEOUT ; c -> bind = b ; c -> loop = NULL ; pthread_mutex_init ( & c -> res_lock , 0 ) ; } return c ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { struct sockaddr_storage addr ; socklen_t len = sizeof ( addr ) ; getpeername ( sock , ( struct sockaddr * ) & addr , & len ) ; if ( addr . ss_family == AF_INET ) { struct sockaddr_in * s = ( struct sockaddr_in * ) & addr ; inet_ntop ( AF_INET , & s -> sin_addr , c -> remote , sizeof ( c -> remote ) ) ; } else { struct sockaddr_in6 * s = ( struct sockaddr_in6 * ) & addr ; inet_ntop ( AF_INET6 , & s -> sin6_addr , c -> remote , sizeof ( c -> remote ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int find_best_16x16_intra ( VP9_COMP * cpi , <S2SV_StartBug> MB_PREDICTION_MODE * pbest_mode ) { <S2SV_EndBug> <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> MB_PREDICTION_MODE best_mode = - 1 , mode ; <S2SV_EndBug> unsigned int best_err = INT_MAX ; for ( mode = DC_PRED ; mode <= TM_PRED ; mode ++ ) { unsigned int err ; xd -> mi [ 0 ] -> mbmi . mode = mode ; <S2SV_StartBug> vp9_predict_intra_block ( xd , 0 , 2 , TX_16X16 , mode , <S2SV_EndBug> x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , xd -> plane [ 0 ] . dst . buf , xd -> plane [ 0 ] . dst . stride , 0 , 0 , 0 ) ; <S2SV_StartBug> err = vp9_sad16x16 ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , <S2SV_EndBug> xd -> plane [ 0 ] . dst . buf , xd -> plane [ 0 ] . dst . stride , best_err ) ; if ( err < best_err ) { best_err = err ; best_mode = mode ; } } if ( pbest_mode ) * pbest_mode = best_mode ; return best_err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , PREDICTION_MODE <S2SV_ModEnd> * pbest_mode ) <S2SV_ModStart> & cpi -> td . <S2SV_ModStart> -> e_mbd ; PREDICTION_MODE <S2SV_ModEnd> best_mode = - <S2SV_ModStart> ( xd , <S2SV_ModEnd> 2 , TX_16X16 <S2SV_ModStart> ; err = vpx_sad16x16 ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , xd -> plane [ 0 ] . dst . buf , xd -> plane [ 0 ] . dst . stride <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3905\n\n```\nCWE-119 int main ( int argc , char * argv [ ] ) { int i , c ; FILE * ifp = 0 , * ofp = 0 ; const char * ifp_filename = \"<stdin>\" ; const char * ofp_filename = \"<stdout>\" ; const char * set_font_name = 0 ; struct font_reader fr ; uint32_t rfork_len ; int raw = 0 , macbinary = 1 , applesingle = 0 , appledouble = 0 , binhex = 0 ; Clp_Parser * clp = Clp_NewParser ( argc , ( const char * const * ) argv , sizeof ( options ) / sizeof ( options [ 0 ] ) , options ) ; program_name = Clp_ProgramName ( clp ) ; while ( 1 ) { int opt = Clp_Next ( clp ) ; switch ( opt ) { case RAW_OPT : raw = 1 ; macbinary = applesingle = appledouble = binhex = 0 ; break ; case MACBINARY_OPT : macbinary = 1 ; raw = applesingle = appledouble = binhex = 0 ; break ; case APPLESINGLE_OPT : applesingle = 1 ; raw = macbinary = appledouble = binhex = 0 ; break ; case APPLEDOUBLE_OPT : appledouble = 1 ; raw = macbinary = applesingle = binhex = 0 ; break ; case BINHEX_OPT : binhex = 1 ; raw = macbinary = applesingle = appledouble = 0 ; break ; output_file : case OUTPUT_OPT : if ( ofp ) fatal_error ( \"output<S2SV_blank>file<S2SV_blank>already<S2SV_blank>specified\" ) ; if ( strcmp ( clp -> vstr , \"-\" ) == 0 ) ofp = stdout ; else { ofp_filename = clp -> vstr ; ofp = fopen ( ofp_filename , \"wb\" ) ; if ( ! ofp ) fatal_error ( \"%s:<S2SV_blank>%s\" , ofp_filename , strerror ( errno ) ) ; } break ; case FILENAME_OPT : if ( set_font_name ) fatal_error ( \"Macintosh<S2SV_blank>font<S2SV_blank>filename<S2SV_blank>already<S2SV_blank>specified\" ) ; set_font_name = clp -> vstr ; break ; case HELP_OPT : usage ( ) ; exit ( 0 ) ; break ; case VERSION_OPT : printf ( \"t1mac<S2SV_blank>(LCDF<S2SV_blank>t1utils)<S2SV_blank>%s\\\\n\" , VERSION ) ; <S2SV_StartBug> printf ( \"Copyright<S2SV_blank>(C)<S2SV_blank>2000-2010<S2SV_blank>Eddie<S2SV_blank>Kohler<S2SV_blank>et<S2SV_blank>al.\\\\n\\\\\\n<S2SV_blank>This<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>see<S2SV_blank>the<S2SV_blank>source<S2SV_blank>for<S2SV_blank>copying<S2SV_blank>conditions.\\\\n\\\\\\n<S2SV_blank>There<S2SV_blank>is<S2SV_blank>NO<S2SV_blank>warranty,<S2SV_blank>not<S2SV_blank>even<S2SV_blank>for<S2SV_blank>merchantability<S2SV_blank>or<S2SV_blank>fitness<S2SV_blank>for<S2SV_blank>a\\\\n\\\\\\n<S2SV_blank>particular<S2SV_blank>purpose.\\\\n\" ) ; <S2SV_EndBug> exit ( 0 ) ; break ; case Clp_NotOption : if ( ifp && ofp ) fatal_error ( \"too<S2SV_blank>many<S2SV_blank>arguments\" ) ; else if ( ifp ) goto output_file ; if ( strcmp ( clp -> vstr , \"-\" ) == 0 ) ifp = stdin ; else { ifp_filename = clp -> vstr ; ifp = fopen ( clp -> vstr , \"r\" ) ; if ( ! ifp ) fatal_error ( \"%s:<S2SV_blank>%s\" , clp -> vstr , strerror ( errno ) ) ; } break ; case Clp_Done : goto done ; case Clp_BadOption : short_usage ( ) ; exit ( 1 ) ; break ; } } done : if ( ! ifp ) ifp = stdin ; if ( ! ofp ) ofp = stdout ; # if defined ( _MSDOS ) || defined ( _WIN32 ) _setmode ( _fileno ( ofp ) , _O_BINARY ) ; # endif fr . output_ascii = t1mac_output_ascii ; fr . output_binary = t1mac_output_binary ; fr . output_end = t1mac_output_end ; rfork_f = tmpfile ( ) ; if ( ! rfork_f ) fatal_error ( \"cannot<S2SV_blank>open<S2SV_blank>temorary<S2SV_blank>file:<S2SV_blank>%s\" , strerror ( errno ) ) ; for ( i = 0 ; i < RFORK_HEADERLEN ; i ++ ) putc ( 0 , rfork_f ) ; init_current_post ( ) ; c = getc ( ifp ) ; ungetc ( c , ifp ) ; if ( c == PFB_MARKER ) process_pfb ( ifp , ifp_filename , & fr ) ; else if ( c == '%' ) process_pfa ( ifp , ifp_filename , & fr ) ; else fatal_error ( \"%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>start<S2SV_blank>with<S2SV_blank>font<S2SV_blank>marker<S2SV_blank>(`%%\\'<S2SV_blank>or<S2SV_blank>0x80)\" , ifp_filename ) ; if ( ifp != stdin ) fclose ( ifp ) ; if ( nrsrc == 0 ) error ( \"no<S2SV_blank>POST<S2SV_blank>resources<S2SV_blank>written<S2SV_blank>--<S2SV_blank>are<S2SV_blank>you<S2SV_blank>sure<S2SV_blank>this<S2SV_blank>was<S2SV_blank>a<S2SV_blank>font?\" ) ; output_new_rsrc ( \"ICN#\" , 256 , 32 , ( const char * ) icon_bw_data , 256 ) ; output_new_rsrc ( \"FREF\" , 256 , 32 , \"LWFN\\\\0\\\\0\\\\0\" , 7 ) ; output_new_rsrc ( \"BNDL\" , 256 , 32 , \"T1UT\\\\0\\\\0\\\\0\\\\1FREF\\\\0\\\\0\\\\0\\\\0\\\\1\\\\0ICN#\\\\0\\\\0\\\\0\\\\0\\\\1\\\\0\" , 28 ) ; output_new_rsrc ( \"icl8\" , 256 , 32 , ( const char * ) icon_8_data , 1024 ) ; output_new_rsrc ( \"icl4\" , 256 , 32 , ( const char * ) icon_4_data , 512 ) ; output_new_rsrc ( \"ics#\" , 256 , 32 , ( const char * ) small_icon_bw_data , 64 ) ; output_new_rsrc ( \"ics8\" , 256 , 32 , ( const char * ) small_icon_8_data , 256 ) ; output_new_rsrc ( \"ics4\" , 256 , 32 , ( const char * ) small_icon_4_data , 128 ) ; output_new_rsrc ( \"T1UT\" , 0 , 0 , \"DConverted<S2SV_blank>by<S2SV_blank>t1mac<S2SV_blank>(t1utils)<S2SV_blank>\\\\251Eddie<S2SV_blank>Kohler<S2SV_blank>http://www.lcdf.org/type/\" , 69 ) ; rfork_len = complete_rfork ( ) ; if ( ! set_font_name && font_name ) { int part = 0 , len = 0 ; char * x , * s ; for ( x = s = font_name ; * s ; s ++ ) <S2SV_StartBug> if ( isupper ( * s ) || isdigit ( * s ) ) { <S2SV_EndBug> * x ++ = * s ; part ++ ; len = 1 ; <S2SV_StartBug> } else if ( islower ( * s ) ) { <S2SV_EndBug> if ( len < ( part <= 1 ? 5 : 3 ) ) * x ++ = * s ; len ++ ; } * x ++ = 0 ; set_font_name = font_name ; } else if ( ! set_font_name ) set_font_name = \"Unknown<S2SV_blank>Font\" ; if ( macbinary ) output_macbinary ( rfork_f , rfork_len , set_font_name , ofp ) ; else if ( raw ) output_raw ( rfork_f , rfork_len , ofp ) ; else if ( applesingle || appledouble ) output_applesingle ( rfork_f , rfork_len , set_font_name , ofp , appledouble ) ; else if ( binhex ) output_binhex ( rfork_f , rfork_len , set_font_name , ofp ) ; else fatal_error ( \"strange<S2SV_blank>output<S2SV_blank>format\" ) ; fclose ( rfork_f ) ; if ( ofp != stdout ) fclose ( ofp ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; printf ( \"Copyright<S2SV_blank>(C)<S2SV_blank>2000-2010<S2SV_blank>Eddie<S2SV_blank>Kohler<S2SV_blank>et<S2SV_blank>al.\\\\n\\\\\\nThis<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>see<S2SV_blank>the<S2SV_blank>source<S2SV_blank>for<S2SV_blank>copying<S2SV_blank>conditions.\\\\n\\\\\\nThere<S2SV_blank>is<S2SV_blank>NO<S2SV_blank>warranty,<S2SV_blank>not<S2SV_blank>even<S2SV_blank>for<S2SV_blank>merchantability<S2SV_blank>or<S2SV_blank>fitness<S2SV_blank>for<S2SV_blank>a\\\\n\\\\\\nparticular<S2SV_blank>purpose.\\\\n\" <S2SV_ModEnd> ) ; exit <S2SV_ModStart> ( isupper ( ( unsigned char ) <S2SV_ModStart> || isdigit ( ( unsigned char ) <S2SV_ModStart> ( islower ( ( unsigned char )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11328\n\n```\nCWE-119 int yr_object_array_set_item ( YR_OBJECT * object , YR_OBJECT * item , int index ) { YR_OBJECT_ARRAY * array ; int i ; int count ; assert ( index >= 0 ) ; assert ( object -> type == OBJECT_TYPE_ARRAY ) ; array = object_as_array ( object ) ; if ( array -> items == NULL ) { <S2SV_StartBug> count = yr_max ( 64 , ( index + 1 ) * 2 ) ; <S2SV_EndBug> array -> items = ( YR_ARRAY_ITEMS * ) yr_malloc ( sizeof ( YR_ARRAY_ITEMS ) + count * sizeof ( YR_OBJECT * ) ) ; if ( array -> items == NULL ) return ERROR_INSUFFICIENT_MEMORY ; memset ( array -> items -> objects , 0 , count * sizeof ( YR_OBJECT * ) ) ; array -> items -> count = count ; } else if ( index >= array -> items -> count ) { count = array -> items -> count * 2 ; <S2SV_StartBug> array -> items = ( YR_ARRAY_ITEMS * ) yr_realloc ( <S2SV_EndBug> array -> items , sizeof ( YR_ARRAY_ITEMS ) + count * sizeof ( YR_OBJECT * ) ) ; if ( array -> items == NULL ) return ERROR_INSUFFICIENT_MEMORY ; for ( i = array -> items -> count ; i < count ; i ++ ) array -> items -> objects [ i ] = NULL ; array -> items -> count = count ; } item -> parent = object ; array -> items -> objects [ index ] = item ; return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { count = 64 ; while ( count <= index ) count *= 2 <S2SV_ModEnd> ; array -> <S2SV_ModStart> * 2 ; while ( count <= index ) count *= 2 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2699\n\n```\nCWE-000 int ip6_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int transhdrlen , int hlimit , int tclass , struct ipv6_txoptions * opt , struct flowi6 * fl6 , struct rt6_info * rt , unsigned int flags , int dontfrag ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_cork * cork ; struct sk_buff * skb ; unsigned int maxfraglen , fragheaderlen ; int exthdrlen ; int hh_len ; int mtu ; int copy ; int err ; int offset = 0 ; int csummode = CHECKSUM_NONE ; __u8 tx_flags = 0 ; if ( flags & MSG_PROBE ) return 0 ; cork = & inet -> cork . base ; if ( skb_queue_empty ( & sk -> sk_write_queue ) ) { if ( opt ) { if ( WARN_ON ( np -> cork . opt ) ) return - EINVAL ; np -> cork . opt = kmalloc ( opt -> tot_len , sk -> sk_allocation ) ; if ( unlikely ( np -> cork . opt == NULL ) ) return - ENOBUFS ; np -> cork . opt -> tot_len = opt -> tot_len ; np -> cork . opt -> opt_flen = opt -> opt_flen ; np -> cork . opt -> opt_nflen = opt -> opt_nflen ; np -> cork . opt -> dst0opt = ip6_opt_dup ( opt -> dst0opt , sk -> sk_allocation ) ; if ( opt -> dst0opt && ! np -> cork . opt -> dst0opt ) return - ENOBUFS ; np -> cork . opt -> dst1opt = ip6_opt_dup ( opt -> dst1opt , sk -> sk_allocation ) ; if ( opt -> dst1opt && ! np -> cork . opt -> dst1opt ) return - ENOBUFS ; np -> cork . opt -> hopopt = ip6_opt_dup ( opt -> hopopt , sk -> sk_allocation ) ; if ( opt -> hopopt && ! np -> cork . opt -> hopopt ) return - ENOBUFS ; np -> cork . opt -> srcrt = ip6_rthdr_dup ( opt -> srcrt , sk -> sk_allocation ) ; if ( opt -> srcrt && ! np -> cork . opt -> srcrt ) return - ENOBUFS ; } dst_hold ( & rt -> dst ) ; cork -> dst = & rt -> dst ; inet -> cork . fl . u . ip6 = * fl6 ; np -> cork . hop_limit = hlimit ; np -> cork . tclass = tclass ; mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( rt -> dst . path ) ; if ( np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } cork -> fragsize = mtu ; if ( dst_allfrag ( rt -> dst . path ) ) cork -> flags |= IPCORK_ALLFRAG ; cork -> length = 0 ; sk -> sk_sndmsg_page = NULL ; sk -> sk_sndmsg_off = 0 ; exthdrlen = rt -> dst . header_len + ( opt ? opt -> opt_flen : 0 ) - rt -> rt6i_nfheader_len ; length += exthdrlen ; transhdrlen += exthdrlen ; } else { rt = ( struct rt6_info * ) cork -> dst ; fl6 = & inet -> cork . fl . u . ip6 ; opt = np -> cork . opt ; transhdrlen = 0 ; exthdrlen = 0 ; mtu = cork -> fragsize ; } hh_len = LL_RESERVED_SPACE ( rt -> dst . dev ) ; fragheaderlen = sizeof ( struct ipv6hdr ) + rt -> rt6i_nfheader_len + ( opt ? opt -> opt_nflen : 0 ) ; maxfraglen = ( ( mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; if ( mtu <= sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN ) { if ( cork -> length + length > sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN - fragheaderlen ) { ipv6_local_error ( sk , EMSGSIZE , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } } if ( sk -> sk_type == SOCK_DGRAM ) { err = sock_tx_timestamp ( sk , & tx_flags ) ; if ( err ) goto error ; } cork -> length += length ; if ( length > mtu ) { int proto = sk -> sk_protocol ; if ( dontfrag && ( proto == IPPROTO_UDP || proto == IPPROTO_RAW ) ) { ipv6_local_rxpmtu ( sk , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } if ( proto == IPPROTO_UDP && ( rt -> dst . dev -> features & NETIF_F_UFO ) ) { err = ip6_ufo_append_data ( sk , getfrag , from , length , hh_len , fragheaderlen , <S2SV_StartBug> transhdrlen , mtu , flags ) ; <S2SV_EndBug> if ( err ) goto error ; return 0 ; } } if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) goto alloc_new_skb ; while ( length > 0 ) { copy = ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - skb -> len ; if ( copy < length ) copy = maxfraglen - skb -> len ; if ( copy <= 0 ) { char * data ; unsigned int datalen ; unsigned int fraglen ; unsigned int fraggap ; unsigned int alloclen ; struct sk_buff * skb_prev ; alloc_new_skb : skb_prev = skb ; if ( skb_prev ) fraggap = skb_prev -> len - maxfraglen ; else fraggap = 0 ; datalen = length + fraggap ; if ( datalen > ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - fragheaderlen ) datalen = maxfraglen - fragheaderlen ; fraglen = datalen + fragheaderlen ; if ( ( flags & MSG_MORE ) && ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) alloclen = mtu ; else alloclen = datalen + fragheaderlen ; if ( datalen == length + fraggap ) alloclen += rt -> dst . trailer_len ; alloclen += sizeof ( struct frag_hdr ) ; if ( transhdrlen ) { skb = sock_alloc_send_skb ( sk , alloclen + hh_len , ( flags & MSG_DONTWAIT ) , & err ) ; } else { skb = NULL ; if ( atomic_read ( & sk -> sk_wmem_alloc ) <= 2 * sk -> sk_sndbuf ) skb = sock_wmalloc ( sk , alloclen + hh_len , 1 , sk -> sk_allocation ) ; if ( unlikely ( skb == NULL ) ) err = - ENOBUFS ; else { tx_flags = 0 ; } } if ( skb == NULL ) goto error ; skb -> ip_summed = csummode ; skb -> csum = 0 ; skb_reserve ( skb , hh_len + sizeof ( struct frag_hdr ) ) ; if ( sk -> sk_type == SOCK_DGRAM ) skb_shinfo ( skb ) -> tx_flags = tx_flags ; data = skb_put ( skb , fraglen ) ; skb_set_network_header ( skb , exthdrlen ) ; data += fragheaderlen ; skb -> transport_header = ( skb -> network_header + fragheaderlen ) ; if ( fraggap ) { skb -> csum = skb_copy_and_csum_bits ( skb_prev , maxfraglen , data + transhdrlen , fraggap , 0 ) ; skb_prev -> csum = csum_sub ( skb_prev -> csum , skb -> csum ) ; data += fraggap ; pskb_trim_unique ( skb_prev , maxfraglen ) ; } copy = datalen - transhdrlen - fraggap ; if ( copy < 0 ) { err = - EINVAL ; kfree_skb ( skb ) ; goto error ; } else if ( copy > 0 && getfrag ( from , data + transhdrlen , offset , copy , fraggap , skb ) < 0 ) { err = - EFAULT ; kfree_skb ( skb ) ; goto error ; } offset += copy ; length -= datalen - fraggap ; transhdrlen = 0 ; exthdrlen = 0 ; csummode = CHECKSUM_NONE ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; continue ; } if ( copy > length ) copy = length ; if ( ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) { unsigned int off ; off = skb -> len ; if ( getfrag ( from , skb_put ( skb , copy ) , offset , copy , off , skb ) < 0 ) { __skb_trim ( skb , off ) ; err = - EFAULT ; goto error ; } } else { int i = skb_shinfo ( skb ) -> nr_frags ; skb_frag_t * frag = & skb_shinfo ( skb ) -> frags [ i - 1 ] ; struct page * page = sk -> sk_sndmsg_page ; int off = sk -> sk_sndmsg_off ; unsigned int left ; if ( page && ( left = PAGE_SIZE - off ) > 0 ) { if ( copy >= left ) copy = left ; if ( page != frag -> page ) { if ( i == MAX_SKB_FRAGS ) { err = - EMSGSIZE ; goto error ; } get_page ( page ) ; skb_fill_page_desc ( skb , i , page , sk -> sk_sndmsg_off , 0 ) ; frag = & skb_shinfo ( skb ) -> frags [ i ] ; } } else if ( i < MAX_SKB_FRAGS ) { if ( copy > PAGE_SIZE ) copy = PAGE_SIZE ; page = alloc_pages ( sk -> sk_allocation , 0 ) ; if ( page == NULL ) { err = - ENOMEM ; goto error ; } sk -> sk_sndmsg_page = page ; sk -> sk_sndmsg_off = 0 ; skb_fill_page_desc ( skb , i , page , 0 , 0 ) ; frag = & skb_shinfo ( skb ) -> frags [ i ] ; } else { err = - EMSGSIZE ; goto error ; } if ( getfrag ( from , page_address ( frag -> page ) + frag -> page_offset + frag -> size , offset , copy , skb -> len , skb ) < 0 ) { err = - EFAULT ; goto error ; } sk -> sk_sndmsg_off += copy ; frag -> size += copy ; skb -> len += copy ; skb -> data_len += copy ; skb -> truesize += copy ; atomic_add ( copy , & sk -> sk_wmem_alloc ) ; } offset += copy ; length -= copy ; } return 0 ; error : cork -> length -= length ; IP6_INC_STATS ( sock_net ( sk ) , rt -> rt6i_idev , IPSTATS_MIB_OUTDISCARDS ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mtu , flags , rt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2211\n\n```\nCWE-264 SYSCALL_DEFINE3 ( osf_sysinfo , int , command , char __user * , buf , long , count ) { const char * sysinfo_table [ ] = { utsname ( ) -> sysname , utsname ( ) -> nodename , utsname ( ) -> release , utsname ( ) -> version , utsname ( ) -> machine , \"alpha\" , \"dummy\" , \"dummy\" , \"dummy\" , } ; unsigned long offset ; const char * res ; long len , err = - EINVAL ; offset = command - 1 ; if ( offset >= ARRAY_SIZE ( sysinfo_table ) ) { printk ( \"sysinfo(%d)\" , command ) ; goto out ; } down_read ( & uts_sem ) ; res = sysinfo_table [ offset ] ; len = strlen ( res ) + 1 ; <S2SV_StartBug> if ( len > count ) <S2SV_EndBug> len = count ; if ( copy_to_user ( buf , res , len ) ) err = - EFAULT ; else err = 0 ; up_read ( & uts_sem ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( unsigned long ) len > ( unsigned long ) <S2SV_ModEnd> count ) len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_set_scalemode ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { vpx_scaling_mode_t * data = va_arg ( args , vpx_scaling_mode_t * ) ; if ( data ) { int res ; vpx_scaling_mode_t scalemode = * ( vpx_scaling_mode_t * ) data ; res = vp8_set_internal_size ( ctx -> cpi , ( VPX_SCALING ) scalemode . h_scaling_mode , ( VPX_SCALING ) scalemode . v_scaling_mode ) ; if ( ! res ) { ctx -> next_frame_flag |= FRAMEFLAGS_KEY ; return VPX_CODEC_OK ; } else return VPX_CODEC_INVALID_PARAM ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14815\n\n```\nCWE-787 static int mwifiex_update_vs_ie ( const u8 * ies , int ies_len , struct mwifiex_ie * * ie_ptr , u16 mask , unsigned int oui , u8 oui_type ) { struct ieee_types_header * vs_ie ; struct mwifiex_ie * ie = * ie_ptr ; const u8 * vendor_ie ; vendor_ie = cfg80211_find_vendor_ie ( oui , oui_type , ies , ies_len ) ; if ( vendor_ie ) { if ( ! * ie_ptr ) { * ie_ptr = kzalloc ( sizeof ( struct mwifiex_ie ) , GFP_KERNEL ) ; if ( ! * ie_ptr ) return - ENOMEM ; ie = * ie_ptr ; } vs_ie = ( struct ieee_types_header * ) vendor_ie ; <S2SV_StartBug> memcpy ( ie -> ie_buffer + le16_to_cpu ( ie -> ie_length ) , <S2SV_EndBug> vs_ie , vs_ie -> len + 2 ) ; le16_unaligned_add_cpu ( & ie -> ie_length , vs_ie -> len + 2 ) ; ie -> mgmt_subtype_mask = cpu_to_le16 ( mask ) ; ie -> ie_index = cpu_to_le16 ( MWIFIEX_AUTO_IDX_MASK ) ; } * ie_ptr = ie ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) vendor_ie ; if ( le16_to_cpu ( ie -> ie_length ) + vs_ie -> len + 2 > IEEE_MAX_IE_SIZE ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16525\n\n```\nCWE-416 void usb_serial_console_disconnect ( struct usb_serial * serial ) { <S2SV_StartBug> if ( serial -> port [ 0 ] == usbcons_info . port ) { <S2SV_EndBug> usb_serial_console_exit ( ) ; usb_serial_put ( serial ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( serial -> port [ 0 ] &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7125\n\n```\nCWE-74 PS_SERIALIZER_DECODE_FUNC ( php_binary ) { const char * p ; char * name ; const char * endptr = val + vallen ; zval * current ; int namelen ; int has_value ; php_unserialize_data_t var_hash ; <S2SV_StartBug> PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; <S2SV_EndBug> for ( p = val ; p < endptr ; ) { <S2SV_StartBug> zval * * tmp ; <S2SV_EndBug> namelen = ( ( unsigned char ) ( * p ) ) & ( ~ PS_BIN_UNDEF ) ; if ( namelen < 0 || namelen > PS_BIN_MAX || ( p + namelen ) >= endptr ) { PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return FAILURE ; } has_value = * p & PS_BIN_UNDEF ? 0 : 1 ; name = estrndup ( p + 1 , namelen ) ; p += namelen + 1 ; if ( zend_hash_find ( & EG ( symbol_table ) , name , namelen + 1 , ( void * * ) & tmp ) == SUCCESS ) { if ( ( Z_TYPE_PP ( tmp ) == IS_ARRAY && Z_ARRVAL_PP ( tmp ) == & EG ( symbol_table ) ) || * tmp == PS ( http_session_vars ) ) { <S2SV_StartBug> efree ( name ) ; <S2SV_EndBug> continue ; } } if ( has_value ) { ALLOC_INIT_ZVAL ( current ) ; if ( php_var_unserialize ( & current , ( const unsigned char * * ) & p , ( const unsigned char * ) endptr , & var_hash TSRMLS_CC ) ) { <S2SV_StartBug> php_set_session_var ( name , namelen , current , & var_hash TSRMLS_CC ) ; <S2SV_EndBug> } else { PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return FAILURE ; } var_push_dtor_no_addref ( & var_hash , & current ) ; } <S2SV_StartBug> PS_ADD_VARL ( name , namelen ) ; <S2SV_EndBug> efree ( name ) ; } PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> php_unserialize_data_t var_hash ; int skip = 0 ; <S2SV_ModStart> * * tmp ; skip = 0 <S2SV_ModStart> ) ) { skip = 1 <S2SV_ModEnd> ; } } <S2SV_ModStart> ) ) { if ( ! skip ) { <S2SV_ModStart> TSRMLS_CC ) ; } <S2SV_ModStart> ) ; } if ( ! skip ) { <S2SV_ModStart> namelen ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-90(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5730\n\n```\nCWE-90 kadm5_ret_t kadm5_create_principal_3 ( void * server_handle , kadm5_principal_ent_t entry , long mask , int n_ks_tuple , krb5_key_salt_tuple * ks_tuple , char * password ) { krb5_db_entry * kdb ; osa_princ_ent_rec adb ; kadm5_policy_ent_rec polent ; krb5_boolean have_polent = FALSE ; krb5_timestamp now ; krb5_tl_data * tl_data_tail ; unsigned int ret ; kadm5_server_handle_t handle = server_handle ; krb5_keyblock * act_mkey ; krb5_kvno act_kvno ; int new_n_ks_tuple = 0 ; krb5_key_salt_tuple * new_ks_tuple = NULL ; CHECK_HANDLE ( server_handle ) ; krb5_clear_error_message ( handle -> context ) ; check_1_6_dummy ( entry , mask , n_ks_tuple , ks_tuple , & password ) ; if ( entry == NULL ) return EINVAL ; if ( ! ( mask & KADM5_PRINCIPAL ) || ( mask & KADM5_MOD_NAME ) || ( mask & KADM5_MOD_TIME ) || ( mask & KADM5_LAST_PWD_CHANGE ) || ( mask & KADM5_MKVNO ) || ( mask & KADM5_AUX_ATTRIBUTES ) || ( mask & KADM5_LAST_SUCCESS ) || ( mask & KADM5_LAST_FAILED ) || ( mask & KADM5_FAIL_AUTH_COUNT ) ) return KADM5_BAD_MASK ; if ( ( mask & KADM5_KEY_DATA ) && entry -> n_key_data != 0 ) return KADM5_BAD_MASK ; if ( ( mask & KADM5_POLICY ) && entry -> policy == NULL ) return KADM5_BAD_MASK ; if ( ( mask & KADM5_POLICY ) && ( mask & KADM5_POLICY_CLR ) ) return KADM5_BAD_MASK ; if ( ( mask & ~ ALL_PRINC_MASK ) ) <S2SV_StartBug> return KADM5_BAD_MASK ; <S2SV_EndBug> ret = kdb_get_entry ( handle , entry -> principal , & kdb , & adb ) ; switch ( ret ) { case KADM5_UNK_PRINC : break ; case 0 : kdb_free_entry ( handle , kdb , & adb ) ; return KADM5_DUP ; default : return ret ; } kdb = calloc ( 1 , sizeof ( * kdb ) ) ; if ( kdb == NULL ) return ENOMEM ; memset ( & adb , 0 , sizeof ( osa_princ_ent_rec ) ) ; if ( ( mask & KADM5_POLICY ) ) { ret = get_policy ( handle , entry -> policy , & polent , & have_polent ) ; if ( ret ) goto cleanup ; } if ( password ) { ret = passwd_check ( handle , password , have_polent ? & polent : NULL , entry -> principal ) ; if ( ret ) goto cleanup ; } if ( ( ret = krb5_timeofday ( handle -> context , & now ) ) ) goto cleanup ; kdb -> magic = KRB5_KDB_MAGIC_NUMBER ; kdb -> len = KRB5_KDB_V1_BASE_LENGTH ; if ( ( mask & KADM5_ATTRIBUTES ) ) kdb -> attributes = entry -> attributes ; else kdb -> attributes = handle -> params . flags ; if ( ( mask & KADM5_MAX_LIFE ) ) kdb -> max_life = entry -> max_life ; else kdb -> max_life = handle -> params . max_life ; if ( mask & KADM5_MAX_RLIFE ) kdb -> max_renewable_life = entry -> max_renewable_life ; else kdb -> max_renewable_life = handle -> params . max_rlife ; if ( ( mask & KADM5_PRINC_EXPIRE_TIME ) ) kdb -> expiration = entry -> princ_expire_time ; else kdb -> expiration = handle -> params . expiration ; kdb -> pw_expiration = 0 ; if ( have_polent ) { if ( polent . pw_max_life ) kdb -> pw_expiration = ts_incr ( now , polent . pw_max_life ) ; else kdb -> pw_expiration = 0 ; } if ( ( mask & KADM5_PW_EXPIRATION ) ) kdb -> pw_expiration = entry -> pw_expiration ; kdb -> last_success = 0 ; kdb -> last_failed = 0 ; kdb -> fail_auth_count = 0 ; ret = krb5_copy_principal ( handle -> context , entry -> principal , & kdb -> princ ) ; if ( ret ) goto cleanup ; if ( ( ret = krb5_dbe_update_last_pwd_change ( handle -> context , kdb , now ) ) ) goto cleanup ; if ( mask & KADM5_TL_DATA ) { for ( tl_data_tail = entry -> tl_data ; tl_data_tail ; tl_data_tail = tl_data_tail -> tl_data_next ) { ret = krb5_dbe_update_tl_data ( handle -> context , kdb , tl_data_tail ) ; if ( ret ) goto cleanup ; } } ret = apply_keysalt_policy ( handle , entry -> policy , n_ks_tuple , ks_tuple , & new_n_ks_tuple , & new_ks_tuple ) ; if ( ret ) goto cleanup ; ret = kdb_get_active_mkey ( handle , & act_kvno , & act_mkey ) ; if ( ret ) goto cleanup ; if ( mask & KADM5_KEY_DATA ) { assert ( entry -> n_key_data == 0 ) ; } else if ( password ) { ret = krb5_dbe_cpw ( handle -> context , act_mkey , new_ks_tuple , new_n_ks_tuple , password , ( mask & KADM5_KVNO ) ? entry -> kvno : 1 , FALSE , kdb ) ; } else { ret = krb5_dbe_crk ( handle -> context , & master_keyblock , new_ks_tuple , new_n_ks_tuple , FALSE , kdb ) ; } if ( ret ) goto cleanup ; ret = krb5_dbe_update_mkvno ( handle -> context , kdb , act_kvno ) ; if ( ret ) goto cleanup ; ret = k5_kadm5_hook_create ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_PRECOMMIT , entry , mask , new_n_ks_tuple , new_ks_tuple , password ) ; if ( ret ) goto cleanup ; adb . admin_history_kvno = INITIAL_HIST_KVNO ; if ( mask & KADM5_POLICY ) { adb . aux_attributes = KADM5_POLICY ; adb . policy = entry -> policy ; } kdb -> mask = mask | KADM5_KEY_DATA | KADM5_PRINCIPAL ; ret = kdb_put_entry ( handle , kdb , & adb ) ; ( void ) k5_kadm5_hook_create ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_POSTCOMMIT , entry , mask , new_n_ks_tuple , new_ks_tuple , password ) ; cleanup : free ( new_ks_tuple ) ; krb5_db_free_principal ( handle -> context , kdb ) ; if ( have_polent ) ( void ) kadm5_free_policy_ent ( handle -> lhandle , & polent ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return KADM5_BAD_MASK ; if ( mask & KADM5_TL_DATA ) { for ( tl_data_tail = entry -> tl_data ; tl_data_tail != NULL ; tl_data_tail = tl_data_tail -> tl_data_next ) { if ( tl_data_tail -> tl_data_type < 256 ) return KADM5_BAD_TL_TYPE ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-522(凭证保护不足)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11008\n\n```\nCWE-522 static int check_submodule_url ( const char * url ) { const char * curl_url ; if ( looks_like_command_line_option ( url ) ) return - 1 ; if ( submodule_url_is_relative ( url ) ) { <S2SV_StartBug> char * decoded = url_decode ( url ) ; <S2SV_EndBug> <S2SV_StartBug> int has_nl = ! ! strchr ( decoded , '\\\\n' ) ; <S2SV_EndBug> free ( decoded ) ; <S2SV_StartBug> if ( has_nl ) <S2SV_EndBug> return - 1 ; } else if ( url_to_curl_url ( url , & curl_url ) ) { struct credential c = CREDENTIAL_INIT ; int ret = credential_from_url_gently ( & c , curl_url , 1 ) ; credential_clear ( & c ) ; return ret ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * decoded ; const char * next ; int has_nl ; decoded <S2SV_ModStart> url ) ; <S2SV_ModEnd> has_nl = ! <S2SV_ModStart> if ( has_nl ) return - 1 ; if ( count_leading_dotdots ( url , & next ) > 0 && * next == ':'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int64_t handle_inter_mode ( VP9_COMP * cpi , MACROBLOCK * x , <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> BLOCK_SIZE bsize , <S2SV_StartBug> int64_t txfm_cache [ ] , <S2SV_EndBug> <S2SV_StartBug> int * rate2 , int64_t * distortion , <S2SV_EndBug> <S2SV_StartBug> int * skippable , <S2SV_EndBug> int * rate_y , int64_t * distortion_y , <S2SV_StartBug> int * rate_uv , int64_t * distortion_uv , <S2SV_EndBug> int * mode_excluded , int * disable_skip , INTERP_FILTER * best_filter , int_mv ( * mode_mv ) [ MAX_REF_FRAMES ] , int mi_row , int mi_col , <S2SV_StartBug> int_mv single_newmv [ MAX_REF_FRAMES ] , <S2SV_EndBug> int64_t * psse , <S2SV_StartBug> const int64_t ref_best_rd ) { <S2SV_EndBug> VP9_COMMON * cm = & cpi -> common ; MACROBLOCKD * xd = & x -> e_mbd ; <S2SV_StartBug> MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> const int is_comp_pred = has_second_ref ( mbmi ) ; <S2SV_StartBug> const int num_refs = is_comp_pred ? 2 : 1 ; <S2SV_EndBug> const int this_mode = mbmi -> mode ; int_mv * frame_mv = mode_mv [ this_mode ] ; int i ; int refs [ 2 ] = { mbmi -> ref_frame [ 0 ] , ( mbmi -> ref_frame [ 1 ] < 0 ? 0 : mbmi -> ref_frame [ 1 ] ) } ; int_mv cur_mv [ 2 ] ; <S2SV_StartBug> int64_t this_rd = 0 ; <S2SV_EndBug> <S2SV_StartBug> DECLARE_ALIGNED_ARRAY ( 16 , uint8_t , tmp_buf , MAX_MB_PLANE * 64 * 64 ) ; <S2SV_EndBug> int pred_exists = 0 ; int intpel_mv ; <S2SV_StartBug> int64_t rd , best_rd = INT64_MAX ; <S2SV_EndBug> int best_needs_copy = 0 ; uint8_t * orig_dst [ MAX_MB_PLANE ] ; int orig_dst_stride [ MAX_MB_PLANE ] ; <S2SV_StartBug> int rs = 0 ; <S2SV_EndBug> if ( is_comp_pred ) { if ( frame_mv [ refs [ 0 ] ] . as_int == INVALID_MV || frame_mv [ refs [ 1 ] ] . as_int == INVALID_MV ) return INT64_MAX ; <S2SV_StartBug> } <S2SV_EndBug> if ( this_mode == NEWMV ) { int rate_mv ; if ( is_comp_pred ) { frame_mv [ refs [ 0 ] ] . as_int = single_newmv [ refs [ 0 ] ] . as_int ; frame_mv [ refs [ 1 ] ] . as_int = single_newmv [ refs [ 1 ] ] . as_int ; if ( cpi -> sf . comp_inter_joint_search_thresh <= bsize ) { joint_motion_search ( cpi , x , bsize , frame_mv , mi_row , mi_col , single_newmv , & rate_mv ) ; } else { rate_mv = vp9_mv_bit_cost ( & frame_mv [ refs [ 0 ] ] . as_mv , <S2SV_StartBug> & mbmi -> ref_mvs [ refs [ 0 ] ] [ 0 ] . as_mv , <S2SV_EndBug> x -> nmvjointcost , x -> mvcost , MV_COST_WEIGHT ) ; rate_mv += vp9_mv_bit_cost ( & frame_mv [ refs [ 1 ] ] . as_mv , <S2SV_StartBug> & mbmi -> ref_mvs [ refs [ 1 ] ] [ 0 ] . as_mv , <S2SV_EndBug> x -> nmvjointcost , x -> mvcost , MV_COST_WEIGHT ) ; } * rate2 += rate_mv ; } else { int_mv tmp_mv ; <S2SV_StartBug> single_motion_search ( cpi , x , tile , bsize , mi_row , mi_col , <S2SV_EndBug> & tmp_mv , & rate_mv ) ; if ( tmp_mv . as_int == INVALID_MV ) return INT64_MAX ; <S2SV_StartBug> * rate2 += rate_mv ; <S2SV_EndBug> <S2SV_StartBug> frame_mv [ refs [ 0 ] ] . as_int = <S2SV_EndBug> xd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_int = tmp_mv . as_int ; single_newmv [ refs [ 0 ] ] . as_int = tmp_mv . as_int ; } } <S2SV_StartBug> for ( i = 0 ; i < num_refs ; ++ i ) { <S2SV_EndBug> cur_mv [ i ] = frame_mv [ refs [ i ] ] ; if ( this_mode != NEWMV ) clamp_mv2 ( & cur_mv [ i ] . as_mv , xd ) ; if ( mv_check_bounds ( x , & cur_mv [ i ] . as_mv ) ) return INT64_MAX ; mbmi -> mv [ i ] . as_int = cur_mv [ i ] . as_int ; } for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) { orig_dst [ i ] = xd -> plane [ i ] . dst . buf ; orig_dst_stride [ i ] = xd -> plane [ i ] . dst . stride ; } <S2SV_StartBug> * rate2 += cost_mv_ref ( cpi , this_mode , mbmi -> mode_context [ refs [ 0 ] ] ) ; <S2SV_EndBug> if ( ! ( * mode_excluded ) ) * mode_excluded = is_comp_pred ? cm -> reference_mode == SINGLE_REFERENCE : cm -> reference_mode == COMPOUND_REFERENCE ; pred_exists = 0 ; intpel_mv = ! mv_has_subpel ( & mbmi -> mv [ 0 ] . as_mv ) ; if ( is_comp_pred ) intpel_mv &= ! mv_has_subpel ( & mbmi -> mv [ 1 ] . as_mv ) ; <S2SV_StartBug> cpi -> mask_filter_rd = 0 ; <S2SV_EndBug> for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; ++ i ) <S2SV_StartBug> cpi -> rd_filter_cache [ i ] = INT64_MAX ; <S2SV_EndBug> if ( cm -> interp_filter != BILINEAR ) { <S2SV_StartBug> * best_filter = EIGHTTAP ; <S2SV_EndBug> if ( x -> source_variance < cpi -> sf . disable_filter_search_var_thresh ) { <S2SV_StartBug> * best_filter = EIGHTTAP ; <S2SV_EndBug> <S2SV_StartBug> } else { <S2SV_EndBug> int newbest ; int tmp_rate_sum = 0 ; int64_t tmp_dist_sum = 0 ; for ( i = 0 ; i < SWITCHABLE_FILTERS ; ++ i ) { int j ; int64_t rs_rd ; <S2SV_StartBug> mbmi -> interp_filter = i ; <S2SV_EndBug> <S2SV_StartBug> rs = vp9_get_switchable_rate ( x ) ; <S2SV_EndBug> rs_rd = RDCOST ( x -> rdmult , x -> rddiv , rs , 0 ) ; if ( i > 0 && intpel_mv ) { rd = RDCOST ( x -> rdmult , x -> rddiv , tmp_rate_sum , tmp_dist_sum ) ; <S2SV_StartBug> cpi -> rd_filter_cache [ i ] = rd ; <S2SV_EndBug> <S2SV_StartBug> cpi -> rd_filter_cache [ SWITCHABLE_FILTERS ] = <S2SV_EndBug> <S2SV_StartBug> MIN ( cpi -> rd_filter_cache [ SWITCHABLE_FILTERS ] , rd + rs_rd ) ; <S2SV_EndBug> if ( cm -> interp_filter == SWITCHABLE ) rd += rs_rd ; <S2SV_StartBug> cpi -> mask_filter_rd = MAX ( cpi -> mask_filter_rd , rd ) ; <S2SV_EndBug> } else { int rate_sum = 0 ; <S2SV_StartBug> int64_t dist_sum = 0 ; <S2SV_EndBug> if ( ( cm -> interp_filter == SWITCHABLE && ( ! i || best_needs_copy ) ) || ( cm -> interp_filter != SWITCHABLE && ( cm -> interp_filter == mbmi -> interp_filter || ( i == 0 && intpel_mv ) ) ) ) { restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; } else { for ( j = 0 ; j < MAX_MB_PLANE ; j ++ ) { xd -> plane [ j ] . dst . buf = tmp_buf + j * 64 * 64 ; xd -> plane [ j ] . dst . stride = 64 ; } } vp9_build_inter_predictors_sb ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> model_rd_for_sb ( cpi , bsize , x , xd , & rate_sum , & dist_sum ) ; <S2SV_EndBug> rd = RDCOST ( x -> rdmult , x -> rddiv , rate_sum , dist_sum ) ; <S2SV_StartBug> cpi -> rd_filter_cache [ i ] = rd ; <S2SV_EndBug> <S2SV_StartBug> cpi -> rd_filter_cache [ SWITCHABLE_FILTERS ] = <S2SV_EndBug> <S2SV_StartBug> MIN ( cpi -> rd_filter_cache [ SWITCHABLE_FILTERS ] , rd + rs_rd ) ; <S2SV_EndBug> if ( cm -> interp_filter == SWITCHABLE ) rd += rs_rd ; <S2SV_StartBug> cpi -> mask_filter_rd = MAX ( cpi -> mask_filter_rd , rd ) ; <S2SV_EndBug> if ( i == 0 && intpel_mv ) { tmp_rate_sum = rate_sum ; tmp_dist_sum = dist_sum ; } } if ( i == 0 && cpi -> sf . use_rd_breakout && ref_best_rd < INT64_MAX ) { if ( rd / 2 > ref_best_rd ) { restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; return INT64_MAX ; } } newbest = i == 0 || rd < best_rd ; if ( newbest ) { best_rd = rd ; <S2SV_StartBug> * best_filter = mbmi -> interp_filter ; <S2SV_EndBug> if ( cm -> interp_filter == SWITCHABLE && i && ! intpel_mv ) best_needs_copy = ! best_needs_copy ; } if ( ( cm -> interp_filter == SWITCHABLE && newbest ) || ( cm -> interp_filter != SWITCHABLE && cm -> interp_filter == mbmi -> interp_filter ) ) { pred_exists = 1 ; <S2SV_StartBug> } <S2SV_EndBug> } restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; } } mbmi -> interp_filter = cm -> interp_filter != SWITCHABLE ? <S2SV_StartBug> cm -> interp_filter : * best_filter ; <S2SV_EndBug> <S2SV_StartBug> rs = cm -> interp_filter == SWITCHABLE ? vp9_get_switchable_rate ( x ) : 0 ; <S2SV_EndBug> if ( pred_exists ) { if ( best_needs_copy ) { for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) { xd -> plane [ i ] . dst . buf = tmp_buf + i * 64 * 64 ; xd -> plane [ i ] . dst . stride = 64 ; } } <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> vp9_build_inter_predictors_sb ( xd , mi_row , mi_col , bsize ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> if ( cpi -> sf . use_rd_breakout && ref_best_rd < INT64_MAX ) { <S2SV_StartBug> int tmp_rate ; <S2SV_EndBug> int64_t tmp_dist ; model_rd_for_sb ( cpi , bsize , x , xd , & tmp_rate , & tmp_dist ) ; rd = RDCOST ( x -> rdmult , x -> rddiv , rs + tmp_rate , tmp_dist ) ; if ( rd / 2 > ref_best_rd ) { restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; return INT64_MAX ; } } if ( cm -> interp_filter == SWITCHABLE ) <S2SV_StartBug> * rate2 += vp9_get_switchable_rate ( x ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! is_comp_pred ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! x -> in_active_map ) { <S2SV_EndBug> if ( psse ) * psse = 0 ; <S2SV_StartBug> * distortion = 0 ; <S2SV_EndBug> x -> skip = 1 ; <S2SV_StartBug> } else if ( cpi -> allow_encode_breakout && x -> encode_breakout ) { <S2SV_EndBug> const BLOCK_SIZE y_size = get_plane_block_size ( bsize , & xd -> plane [ 0 ] ) ; const BLOCK_SIZE uv_size = get_plane_block_size ( bsize , & xd -> plane [ 1 ] ) ; unsigned int var , sse ; unsigned int thresh_ac ; const unsigned int max_thresh = ( cpi -> allow_encode_breakout == ENCODE_BREAKOUT_LIMITED ) ? 128 : 36000 ; const unsigned int min_thresh = MIN ( ( ( unsigned int ) x -> encode_breakout << 4 ) , max_thresh ) ; thresh_ac = ( xd -> plane [ 0 ] . dequant [ 1 ] * xd -> plane [ 0 ] . dequant [ 1 ] ) / 9 ; thresh_ac = clamp ( thresh_ac , min_thresh , max_thresh ) ; var = cpi -> fn_ptr [ y_size ] . vf ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , xd -> plane [ 0 ] . dst . buf , xd -> plane [ 0 ] . dst . stride , & sse ) ; thresh_ac >>= 8 - ( b_width_log2_lookup [ bsize ] + b_height_log2_lookup [ bsize ] ) ; if ( sse < thresh_ac || sse == 0 ) { unsigned int thresh_dc ; thresh_dc = ( xd -> plane [ 0 ] . dequant [ 0 ] * xd -> plane [ 0 ] . dequant [ 0 ] >> 6 ) ; if ( ( sse - var ) < thresh_dc || sse == var ) { unsigned int sse_u , sse_v ; unsigned int var_u , var_v ; var_u = cpi -> fn_ptr [ uv_size ] . vf ( x -> plane [ 1 ] . src . buf , x -> plane [ 1 ] . src . stride , xd -> plane [ 1 ] . dst . buf , xd -> plane [ 1 ] . dst . stride , & sse_u ) ; if ( ( sse_u * 4 < thresh_ac || sse_u == 0 ) && ( sse_u - var_u < thresh_dc || sse_u == var_u ) ) { var_v = cpi -> fn_ptr [ uv_size ] . vf ( x -> plane [ 2 ] . src . buf , x -> plane [ 2 ] . src . stride , xd -> plane [ 2 ] . dst . buf , xd -> plane [ 2 ] . dst . stride , & sse_v ) ; if ( ( sse_v * 4 < thresh_ac || sse_v == 0 ) && ( sse_v - var_v < thresh_dc || sse_v == var_v ) ) { x -> skip = 1 ; * rate2 += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 1 ) ; <S2SV_StartBug> * distortion_uv = ( sse_u + sse_v ) << 4 ; <S2SV_EndBug> * distortion = ( sse << 4 ) + * distortion_uv ; * disable_skip = 1 ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , * rate2 , * distortion ) ; } } } } } } <S2SV_StartBug> if ( ! x -> skip ) { <S2SV_EndBug> int skippable_y , skippable_uv ; int64_t sseuv = INT64_MAX ; int64_t rdcosty = INT64_MAX ; inter_super_block_yrd ( cpi , x , rate_y , distortion_y , & skippable_y , psse , bsize , txfm_cache , ref_best_rd ) ; if ( * rate_y == INT_MAX ) { * rate2 = INT_MAX ; * distortion = INT64_MAX ; restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; <S2SV_StartBug> return INT64_MAX ; <S2SV_EndBug> } * rate2 += * rate_y ; * distortion += * distortion_y ; rdcosty = RDCOST ( x -> rdmult , x -> rddiv , * rate2 , * distortion ) ; rdcosty = MIN ( rdcosty , RDCOST ( x -> rdmult , x -> rddiv , 0 , * psse ) ) ; super_block_uvrd ( cpi , x , rate_uv , distortion_uv , & skippable_uv , & sseuv , bsize , ref_best_rd - rdcosty ) ; if ( * rate_uv == INT_MAX ) { * rate2 = INT_MAX ; * distortion = INT64_MAX ; restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; return INT64_MAX ; } * psse += sseuv ; * rate2 += * rate_uv ; * distortion += * distortion_uv ; * skippable = skippable_y && skippable_uv ; } restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; return this_rd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * x , <S2SV_ModEnd> BLOCK_SIZE bsize , <S2SV_ModStart> BLOCK_SIZE bsize , int * rate2 , int64_t * distortion <S2SV_ModEnd> , int * <S2SV_ModStart> , int * skippable <S2SV_ModEnd> , int * <S2SV_ModStart> , int * rate_y , int * rate_uv <S2SV_ModEnd> , int * <S2SV_ModStart> , int * disable_skip <S2SV_ModEnd> , int_mv ( <S2SV_ModStart> , int_mv single_newmv [ MAX_REF_FRAMES ] , INTERP_FILTER ( * single_filter ) [ MAX_REF_FRAMES ] , int ( * single_skippable ) <S2SV_ModStart> const int64_t ref_best_rd , int64_t * mask_filter , int64_t filter_cache [ ] <S2SV_ModStart> ] -> mbmi ; MB_MODE_INFO_EXT * const mbmi_ext = x -> mbmi_ext <S2SV_ModStart> ; const int <S2SV_ModEnd> this_mode = mbmi <S2SV_ModStart> 2 ] ; # if CONFIG_VP9_HIGHBITDEPTH DECLARE_ALIGNED <S2SV_ModEnd> ( 16 , <S2SV_ModStart> ( 16 , uint16_t , tmp_buf16 [ MAX_MB_PLANE * 64 * 64 ] ) ; uint8_t * tmp_buf ; # else DECLARE_ALIGNED ( 16 , uint8_t , tmp_buf [ <S2SV_ModEnd> MAX_MB_PLANE * 64 <S2SV_ModStart> 64 * 64 ] ) ; # endif <S2SV_ModEnd> int pred_exists = <S2SV_ModStart> int64_t rd , tmp_rd , <S2SV_ModStart> = 0 ; INTERP_FILTER best_filter = SWITCHABLE ; uint8_t skip_txfm [ MAX_MB_PLANE << 2 ] = { 0 } ; int64_t bsse [ MAX_MB_PLANE << 2 ] = { 0 } ; int bsl = mi_width_log2_lookup [ bsize ] ; int pred_filter_search = cpi -> sf . cb_pred_filter_search ? ( ( ( mi_row + mi_col ) >> bsl ) + get_chessboard_index ( cm -> current_video_frame ) ) & 0x1 : 0 ; int skip_txfm_sb = 0 ; int64_t skip_sse_sb = INT64_MAX ; int64_t distortion_y = 0 , distortion_uv = 0 ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { tmp_buf = CONVERT_TO_BYTEPTR ( tmp_buf16 ) ; } else { tmp_buf = ( uint8_t * ) tmp_buf16 ; } # endif if ( pred_filter_search ) { INTERP_FILTER af = SWITCHABLE , lf = SWITCHABLE ; if ( xd -> up_available ) af = xd -> mi [ - xd -> mi_stride ] -> mbmi . interp_filter ; if ( xd -> left_available ) lf = xd -> mi [ - 1 ] -> mbmi . interp_filter ; if ( ( this_mode != NEWMV ) || ( af == lf ) ) best_filter = af ; } <S2SV_ModStart> return INT64_MAX ; if ( cpi -> sf . adaptive_mode_search ) { if ( single_filter [ this_mode ] [ refs [ 0 ] ] == single_filter [ this_mode ] [ refs [ 1 ] ] ) best_filter = single_filter [ this_mode ] [ refs [ 0 ] ] ; } <S2SV_ModStart> as_mv , & x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> as_mv , & x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> , x , <S2SV_ModEnd> bsize , mi_row <S2SV_ModStart> return INT64_MAX ; frame_mv [ refs [ 0 ] ] . as_int = xd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_int = tmp_mv . as_int ; single_newmv [ refs [ 0 ] ] . as_int = tmp_mv . as_int ; if ( discount_newmv_test ( cpi , this_mode , tmp_mv , mode_mv , refs [ 0 ] ) ) { * rate2 += MAX ( ( rate_mv / NEW_MV_DISCOUNT_FACTOR ) , 1 ) ; } else { <S2SV_ModStart> += rate_mv ; } <S2SV_ModEnd> } } for <S2SV_ModStart> ; i < is_comp_pred + 1 <S2SV_ModEnd> ; ++ i <S2SV_ModStart> stride ; } if ( discount_newmv_test ( cpi , this_mode , frame_mv [ refs [ 0 ] ] , mode_mv , refs [ 0 ] ) ) { * rate2 += MIN ( cost_mv_ref ( cpi , this_mode , mbmi_ext -> mode_context [ refs [ 0 ] ] ) , cost_mv_ref ( cpi , NEARESTMV , mbmi_ext -> mode_context [ refs [ 0 ] ] ) ) ; } else { <S2SV_ModStart> , this_mode , mbmi_ext -> mode_context [ refs [ 0 ] ] ) ; } if ( RDCOST ( x -> rdmult , x -> rddiv , * rate2 , 0 ) > ref_best_rd && mbmi -> mode != NEARESTMV ) return INT64_MAX <S2SV_ModEnd> ; pred_exists = <S2SV_ModStart> as_mv ) ; <S2SV_ModEnd> for ( i <S2SV_ModStart> ++ i ) filter_cache <S2SV_ModEnd> [ i ] <S2SV_ModStart> BILINEAR ) { <S2SV_ModEnd> if ( x <S2SV_ModStart> disable_filter_search_var_thresh ) { <S2SV_ModEnd> best_filter = EIGHTTAP <S2SV_ModStart> ; } else if ( best_filter == SWITCHABLE ) <S2SV_ModStart> int64_t rs_rd ; int tmp_skip_sb = 0 ; int64_t tmp_skip_sse = INT64_MAX ; <S2SV_ModStart> = vp9_get_switchable_rate ( cpi , xd <S2SV_ModEnd> ) ; rs_rd <S2SV_ModStart> tmp_dist_sum ) ; filter_cache <S2SV_ModEnd> [ i ] <S2SV_ModStart> = rd ; filter_cache <S2SV_ModEnd> [ SWITCHABLE_FILTERS ] <S2SV_ModStart> = MIN ( filter_cache <S2SV_ModEnd> [ SWITCHABLE_FILTERS ] <S2SV_ModStart> += rs_rd ; * mask_filter <S2SV_ModEnd> = MAX ( <S2SV_ModStart> = MAX ( * mask_filter <S2SV_ModEnd> , rd ) <S2SV_ModStart> = 0 ; if ( i > 0 && cpi -> sf . adaptive_interp_filter_search && ( cpi -> sf . interp_filter_search_mask & ( 1 << i ) ) ) { rate_sum = INT_MAX ; dist_sum = INT64_MAX ; continue ; } <S2SV_ModStart> , & dist_sum , & tmp_skip_sb , & tmp_skip_sse <S2SV_ModStart> dist_sum ) ; filter_cache <S2SV_ModEnd> [ i ] <S2SV_ModStart> = rd ; filter_cache <S2SV_ModEnd> [ SWITCHABLE_FILTERS ] <S2SV_ModStart> = MIN ( filter_cache <S2SV_ModEnd> [ SWITCHABLE_FILTERS ] <S2SV_ModStart> += rs_rd ; * mask_filter <S2SV_ModEnd> = MAX ( <S2SV_ModStart> = MAX ( * mask_filter <S2SV_ModEnd> , rd ) <S2SV_ModStart> = rd ; <S2SV_ModEnd> best_filter = mbmi <S2SV_ModStart> = 1 ; tmp_rd = best_rd ; skip_txfm_sb = tmp_skip_sb ; skip_sse_sb = tmp_skip_sse ; memcpy ( skip_txfm , x -> skip_txfm , sizeof ( skip_txfm ) ) ; memcpy ( bsse , x -> bsse , sizeof ( bsse ) ) ; <S2SV_ModStart> -> interp_filter : <S2SV_ModEnd> best_filter ; rs <S2SV_ModStart> ? vp9_get_switchable_rate ( cpi , xd <S2SV_ModEnd> ) : 0 <S2SV_ModStart> ; } } rd = tmp_rd + RDCOST ( x -> rdmult , x -> rddiv , rs , 0 ) ; <S2SV_ModStart> } else { int tmp_rate ; int64_t tmp_dist ; <S2SV_ModStart> bsize ) ; model_rd_for_sb ( cpi , bsize , x , xd , & tmp_rate , & tmp_dist , & skip_txfm_sb , & skip_sse_sb ) ; rd = RDCOST ( x -> rdmult , x -> rddiv , rs + tmp_rate , tmp_dist ) ; memcpy ( skip_txfm , x -> skip_txfm , sizeof ( skip_txfm ) ) ; memcpy ( bsse , x -> bsse , sizeof ( bsse ) ) ; } if ( ! is_comp_pred ) single_filter [ this_mode ] [ refs [ 0 ] ] = mbmi -> interp_filter ; if ( cpi -> sf . adaptive_mode_search ) if ( is_comp_pred ) if ( single_skippable [ this_mode ] [ refs [ 0 ] ] && single_skippable [ this_mode ] [ refs [ 1 ] ] ) memset ( skip_txfm , SKIP_TXFM_AC_DC , sizeof ( skip_txfm ) ) ; <S2SV_ModEnd> if ( cpi <S2SV_ModStart> INT64_MAX ) { <S2SV_ModEnd> if ( rd <S2SV_ModStart> * rate2 += rs ; memcpy ( x -> skip_txfm , skip_txfm , sizeof ( skip_txfm ) ) ; memcpy ( x -> bsse , bsse , sizeof ( bsse ) <S2SV_ModEnd> ) ; if <S2SV_ModStart> if ( ! skip_txfm_sb ) { int skippable_y , skippable_uv ; int64_t sseuv = INT64_MAX ; int64_t rdcosty = INT64_MAX ; vp9_subtract_plane ( x , bsize , 0 ) ; super_block_yrd ( cpi , x , rate_y , & distortion_y , & skippable_y , psse , bsize , ref_best_rd ) ; if ( * rate_y == INT_MAX ) { * rate2 = INT_MAX ; * distortion = INT64_MAX ; restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; return INT64_MAX ; } * rate2 += * rate_y ; * distortion += distortion_y ; rdcosty = RDCOST ( x -> rdmult , x -> rddiv , * rate2 , * distortion ) ; rdcosty = MIN ( rdcosty , RDCOST ( x -> rdmult , x -> rddiv , 0 , * psse ) ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! super_block_uvrd ( cpi , x , rate_uv , & distortion_uv , & skippable_uv , & sseuv , bsize , ref_best_rd - rdcosty ) ) { * rate2 = INT_MAX ; * distortion = INT64_MAX ; restore_dst_buf ( xd , orig_dst , orig_dst_stride ) ; return INT64_MAX ; } * psse += sseuv ; * rate2 += * rate_uv <S2SV_ModEnd> ; * distortion <S2SV_ModStart> ; * distortion += distortion_uv ; * skippable = skippable_y && skippable_uv ; } else { <S2SV_ModEnd> x -> skip <S2SV_ModStart> = 1 ; * disable_skip <S2SV_ModEnd> = 1 ; <S2SV_ModStart> ) ; * distortion = skip_sse_sb ; <S2SV_ModEnd> } if ( <S2SV_ModStart> if ( ! is_comp_pred ) single_skippable [ this_mode ] [ refs [ 0 ] ] = * skippable <S2SV_ModEnd> ; restore_dst_buf ( <S2SV_ModStart> ) ; return 0 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10540\n\n```\nCWE-787 int ParseWave64HeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t total_samples = 0 , infilesize ; Wave64ChunkHeader chunk_header ; Wave64FileHeader filehdr ; WaveHeader WaveHeader ; uint32_t bcount ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & filehdr , fourcc , 4 ) ; if ( ! DoReadFile ( infile , ( ( char * ) & filehdr ) + 4 , sizeof ( Wave64FileHeader ) - 4 , & bcount ) || bcount != sizeof ( Wave64FileHeader ) - 4 || memcmp ( filehdr . ckID , riff_guid , sizeof ( riff_guid ) ) || memcmp ( filehdr . formType , wave_guid , sizeof ( wave_guid ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & filehdr , sizeof ( filehdr ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackLittleEndianToNative ( & filehdr , Wave64ChunkHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && filehdr . ckSize && filehdr . ckSize + 1 && filehdr . ckSize != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } # endif while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( Wave64ChunkHeader ) , & bcount ) || bcount != sizeof ( Wave64ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( Wave64ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , Wave64ChunkHeaderFormat ) ; chunk_header . ckSize -= sizeof ( chunk_header ) ; if ( ! memcmp ( chunk_header . ckID , fmt_guid , sizeof ( fmt_guid ) ) ) { int supported = TRUE , format ; chunk_header . ckSize = ( chunk_header . ckSize + 7 ) & ~ 7L ; if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , ( uint32_t ) chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , ( uint32_t ) chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.W64<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>W64<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! memcmp ( chunk_header . ckID , data_guid , sizeof ( data_guid ) ) ) { if ( ! WaveHeader . NumChannels ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ( config -> qmode & QMODE_IGNORE_LENGTH ) || chunk_header . ckSize <= 0 ) { config -> qmode |= QMODE_IGNORE_LENGTH ; if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { if ( infilesize && infilesize - chunk_header . ckSize > 16777216 ) { error_line ( \"this<S2SV_blank>.W64<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } total_samples = chunk_header . ckSize / WaveHeader . BlockAlign ; if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.W64<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 7 ) & ~ 7L ; <S2SV_StartBug> char * buff = malloc ( bytes_to_copy ) ; <S2SV_EndBug> if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10248\n\n```\nCWE-476 int jpc_tsfb_synthesize ( jpc_tsfb_t * tsfb , jas_seq2d_t * a ) { <S2SV_StartBug> return ( tsfb -> numlvls > 0 ) ? jpc_tsfb_synthesize2 ( tsfb , <S2SV_EndBug> jas_seq2d_getref ( a , jas_seq2d_xstart ( a ) , jas_seq2d_ystart ( a ) ) , jas_seq2d_xstart ( a ) , jas_seq2d_ystart ( a ) , jas_seq2d_width ( a ) , jas_seq2d_height ( a ) , jas_seq2d_rowstep ( a ) , tsfb -> numlvls - 1 ) : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> numlvls > 0 && jas_seq2d_size ( a )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadHALDImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; size_t cube_size , level ; ssize_t y ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; level = 0 ; if ( * image_info -> filename != '\\\\0' ) level = StringToUnsignedLong ( image_info -> filename ) ; if ( level < 2 ) level = 8 ; status = MagickTrue ; cube_size = level * level ; image -> columns = ( size_t ) ( level * cube_size ) ; image -> rows = ( size_t ) ( level * cube_size ) ; <S2SV_StartBug> for ( y = 0 ; y < ( ssize_t ) image -> rows ; y += ( ssize_t ) level ) <S2SV_EndBug> { ssize_t blue , green , red ; register PixelPacket * restrict q ; if ( status == MagickFalse ) continue ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , ( size_t ) level , exception ) ; if ( q == ( PixelPacket * ) NULL ) { status = MagickFalse ; continue ; } blue = y / ( ssize_t ) level ; for ( green = 0 ; green < ( ssize_t ) cube_size ; green ++ ) { for ( red = 0 ; red < ( ssize_t ) cube_size ; red ++ ) { SetPixelRed ( q , ClampToQuantum ( ( MagickRealType ) ( QuantumRange * red / ( cube_size - 1.0 ) ) ) ) ; SetPixelGreen ( q , ClampToQuantum ( ( MagickRealType ) ( QuantumRange * green / ( cube_size - 1.0 ) ) ) ) ; SetPixelBlue ( q , ClampToQuantum ( ( MagickRealType ) ( QuantumRange * blue / ( cube_size - 1.0 ) ) ) ) ; SetPixelOpacity ( q , OpaqueOpacity ) ; q ++ ; } } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) status = MagickFalse ; } return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cube_size ) ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_entropy_mv_init ( ) { <S2SV_EndBug> vp9_tokens_from_tree ( mv_joint_encodings , vp9_mv_joint_tree ) ; vp9_tokens_from_tree ( mv_class_encodings , vp9_mv_class_tree ) ; vp9_tokens_from_tree ( mv_class0_encodings , vp9_mv_class0_tree ) ; vp9_tokens_from_tree ( mv_fp_encodings , vp9_mv_fp_tree ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_entropy_mv_init ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3230\n\n```\nCWE-200 static int l2tp_ip6_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct sockaddr_l2tpip6 * lsa = ( struct sockaddr_l2tpip6 * ) msg -> msg_name ; size_t copied = 0 ; int err = - EOPNOTSUPP ; struct sk_buff * skb ; if ( flags & MSG_OOB ) goto out ; if ( addr_len ) * addr_len = sizeof ( * lsa ) ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len ) ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_timestamp ( msg , sk , skb ) ; if ( lsa ) { lsa -> l2tp_family = AF_INET6 ; lsa -> l2tp_unused = 0 ; lsa -> l2tp_addr = ipv6_hdr ( skb ) -> saddr ; lsa -> l2tp_flowinfo = 0 ; lsa -> l2tp_scope_id = 0 ; <S2SV_StartBug> if ( ipv6_addr_type ( & lsa -> l2tp_addr ) & IPV6_ADDR_LINKLOCAL ) <S2SV_EndBug> lsa -> l2tp_scope_id = IP6CB ( skb ) -> iif ; } if ( np -> rxopt . all ) ip6_datagram_recv_ctl ( sk , msg , skb ) ; if ( flags & MSG_TRUNC ) copied = skb -> len ; done : skb_free_datagram ( sk , skb ) ; out : return err ? err : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; lsa -> l2tp_conn_id = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 GPLOT * gplotCreate ( const char * rootname , l_int32 outformat , const char * title , const char * xlabel , const char * ylabel ) { char * newroot ; <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> l_int32 badchar ; GPLOT * gplot ; PROCNAME ( \"gplotCreate\" ) ; if ( ! rootname ) return ( GPLOT * ) ERROR_PTR ( \"rootname<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( outformat != GPLOT_PNG && outformat != GPLOT_PS && outformat != GPLOT_EPS && outformat != GPLOT_LATEX ) return ( GPLOT * ) ERROR_PTR ( \"outformat<S2SV_blank>invalid\" , procName , NULL ) ; stringCheckForChars ( rootname , \"`;&|><\\\\\"?*\" , & badchar ) ; if ( badchar ) return ( GPLOT * ) ERROR_PTR ( \"invalid<S2SV_blank>rootname\" , procName , NULL ) ; if ( ( gplot = ( GPLOT * ) LEPT_CALLOC ( 1 , sizeof ( GPLOT ) ) ) == NULL ) return ( GPLOT * ) ERROR_PTR ( \"gplot<S2SV_blank>not<S2SV_blank>made\" , procName , NULL ) ; gplot -> cmddata = sarrayCreate ( 0 ) ; gplot -> datanames = sarrayCreate ( 0 ) ; gplot -> plotdata = sarrayCreate ( 0 ) ; gplot -> plottitles = sarrayCreate ( 0 ) ; gplot -> plotstyles = numaCreate ( 0 ) ; newroot = genPathname ( rootname , NULL ) ; gplot -> rootname = newroot ; gplot -> outformat = outformat ; <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.cmd\" , rootname ) ; <S2SV_EndBug> gplot -> cmdname = stringNew ( buf ) ; if ( outformat == GPLOT_PNG ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.png\" , newroot ) ; <S2SV_EndBug> else if ( outformat == GPLOT_PS ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.ps\" , newroot ) ; <S2SV_EndBug> else if ( outformat == GPLOT_EPS ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.eps\" , newroot ) ; <S2SV_EndBug> else if ( outformat == GPLOT_LATEX ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.tex\" , newroot ) ; <S2SV_EndBug> gplot -> outname = stringNew ( buf ) ; if ( title ) gplot -> title = stringNew ( title ) ; if ( xlabel ) gplot -> xlabel = stringNew ( xlabel ) ; if ( ylabel ) gplot -> ylabel = stringNew ( ylabel ) ; return gplot ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; l_int32 <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.cmd\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.png\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.ps\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.eps\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.tex\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static int hugetlbfs_statfs ( struct dentry * dentry , struct kstatfs * buf ) { struct hugetlbfs_sb_info * sbinfo = HUGETLBFS_SB ( dentry -> d_sb ) ; struct hstate * h = hstate_inode ( dentry -> d_inode ) ; buf -> f_type = HUGETLBFS_MAGIC ; buf -> f_bsize = huge_page_size ( h ) ; if ( sbinfo ) { spin_lock ( & sbinfo -> stat_lock ) ; <S2SV_StartBug> if ( sbinfo -> max_blocks >= 0 ) { <S2SV_EndBug> <S2SV_StartBug> buf -> f_blocks = sbinfo -> max_blocks ; <S2SV_EndBug> <S2SV_StartBug> buf -> f_bavail = buf -> f_bfree = sbinfo -> free_blocks ; <S2SV_EndBug> buf -> f_files = sbinfo -> max_inodes ; buf -> f_ffree = sbinfo -> free_inodes ; } spin_unlock ( & sbinfo -> stat_lock ) ; } buf -> f_namelen = NAME_MAX ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sbinfo -> spool ) { long free_pages ; spin_lock ( & sbinfo -> spool -> lock ) ; <S2SV_ModEnd> buf -> f_blocks <S2SV_ModStart> = sbinfo -> spool -> max_hpages ; free_pages = sbinfo -> spool -> max_hpages - sbinfo -> spool -> used_hpages <S2SV_ModEnd> ; buf -> <S2SV_ModStart> -> f_bfree = free_pages ; spin_unlock ( & sbinfo -> spool -> lock ) <S2SV_ModEnd> ; buf ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 static inline void header_put_le_int ( SF_PRIVATE * psf , int x ) <S2SV_StartBug> { if ( psf -> headindex < SIGNED_SIZEOF ( psf -> header ) - 4 ) <S2SV_EndBug> <S2SV_StartBug> { psf -> header [ psf -> headindex ++ ] = x ; <S2SV_EndBug> <S2SV_StartBug> psf -> header [ psf -> headindex ++ ] = ( x >> 8 ) ; <S2SV_EndBug> <S2SV_StartBug> psf -> header [ psf -> headindex ++ ] = ( x >> 16 ) ; <S2SV_EndBug> <S2SV_StartBug> psf -> header [ psf -> headindex ++ ] = ( x >> 24 ) ; <S2SV_EndBug> <S2SV_StartBug> } ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x ) { <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . ptr [ <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> [ psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> [ psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> [ psf -> header . indx <S2SV_ModEnd> ++ ] = <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 <S2SV_StartBug> int rose_parse_facilities ( unsigned char * p , <S2SV_EndBug> struct rose_facilities_struct * facilities ) { int facilities_len , len ; facilities_len = * p ++ ; <S2SV_StartBug> if ( facilities_len == 0 ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> while ( facilities_len > 0 ) { <S2SV_EndBug> if ( * p == 0x00 ) { facilities_len -- ; p ++ ; switch ( * p ) { case FAC_NATIONAL : len = rose_parse_national ( p + 1 , facilities , facilities_len - 1 ) ; <S2SV_StartBug> if ( len < 0 ) <S2SV_EndBug> return 0 ; facilities_len -= len + 1 ; p += len + 1 ; break ; case FAC_CCITT : len = rose_parse_ccitt ( p + 1 , facilities , facilities_len - 1 ) ; <S2SV_StartBug> if ( len < 0 ) <S2SV_EndBug> return 0 ; facilities_len -= len + 1 ; p += len + 1 ; <S2SV_StartBug> break ; <S2SV_EndBug> default : printk ( KERN_DEBUG \"ROSE:<S2SV_blank>rose_parse_facilities<S2SV_blank>-<S2SV_blank>unknown<S2SV_blank>facilities<S2SV_blank>family<S2SV_blank>%02X\\\\n\" , * p ) ; facilities_len -- ; p ++ ; break ; } } else break ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * p , unsigned packet_len <S2SV_ModStart> facilities_len == 0 || ( unsigned ) facilities_len > packet_len <S2SV_ModStart> while ( facilities_len >= 3 && <S2SV_ModEnd> * p == <S2SV_ModStart> 1 ) ; <S2SV_ModEnd> break ; case <S2SV_ModStart> 1 ) ; break ; default : printk ( KERN_DEBUG \"ROSE:<S2SV_blank>rose_parse_facilities<S2SV_blank>-<S2SV_blank>unknown<S2SV_blank>facilities<S2SV_blank>family<S2SV_blank>%02X\\\\n\" , * p ) ; len = 1 ; break ; } <S2SV_ModStart> len < 0 ) return 0 ; if ( WARN_ON ( len >= facilities_len ) <S2SV_ModStart> + 1 ; } return facilities_len == 0 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17439\n\n```\nCWE-476 krb5_error_code _kdc_as_rep ( kdc_request_t r , krb5_data * reply , const char * from , struct sockaddr * from_addr , int datagram_reply ) { krb5_context context = r -> context ; krb5_kdc_configuration * config = r -> config ; KDC_REQ * req = & r -> req ; KDC_REQ_BODY * b = NULL ; AS_REP rep ; KDCOptions f ; krb5_enctype setype ; krb5_error_code ret = 0 ; Key * skey ; int found_pa = 0 ; int i , flags = HDB_F_FOR_AS_REQ ; METHOD_DATA error_method ; const PA_DATA * pa ; memset ( & rep , 0 , sizeof ( rep ) ) ; error_method . len = 0 ; error_method . val = NULL ; ret = _kdc_fast_unwrap_request ( r ) ; if ( ret ) { _kdc_r_log ( r , 0 , \"FAST<S2SV_blank>unwrap<S2SV_blank>request<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>failed:<S2SV_blank>%d\" , from , ret ) ; goto out ; } b = & req -> req_body ; f = b -> kdc_options ; if ( f . canonicalize ) flags |= HDB_F_CANON ; if ( b -> sname == NULL ) { ret = KRB5KRB_ERR_GENERIC ; _kdc_set_e_text ( r , \"No<S2SV_blank>server<S2SV_blank>in<S2SV_blank>request\" ) ; } else { ret = _krb5_principalname2krb5_principal ( context , & r -> server_princ , * ( b -> sname ) , b -> realm ) ; if ( ret == 0 ) ret = krb5_unparse_name ( context , r -> server_princ , & r -> server_name ) ; } if ( ret ) { kdc_log ( context , config , 0 , \"AS-REQ<S2SV_blank>malformed<S2SV_blank>server<S2SV_blank>name<S2SV_blank>from<S2SV_blank>%s\" , from ) ; goto out ; } if ( b -> cname == NULL ) { ret = KRB5KRB_ERR_GENERIC ; _kdc_set_e_text ( r , \"No<S2SV_blank>client<S2SV_blank>in<S2SV_blank>request\" ) ; } else { ret = _krb5_principalname2krb5_principal ( context , & r -> client_princ , * ( b -> cname ) , b -> realm ) ; if ( ret ) goto out ; ret = krb5_unparse_name ( context , r -> client_princ , & r -> client_name ) ; } if ( ret ) { kdc_log ( context , config , 0 , \"AS-REQ<S2SV_blank>malformed<S2SV_blank>client<S2SV_blank>name<S2SV_blank>from<S2SV_blank>%s\" , from ) ; goto out ; } kdc_log ( context , config , 0 , \"AS-REQ<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>%s\" , r -> client_name , from , r -> server_name ) ; if ( _kdc_is_anonymous ( context , r -> client_princ ) ) { if ( ! _kdc_is_anon_request ( b ) ) { kdc_log ( context , config , 0 , \"Anonymous<S2SV_blank>ticket<S2SV_blank>w/o<S2SV_blank>anonymous<S2SV_blank>flag\" ) ; ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; goto out ; } } else if ( _kdc_is_anon_request ( b ) ) { kdc_log ( context , config , 0 , \"Request<S2SV_blank>for<S2SV_blank>a<S2SV_blank>anonymous<S2SV_blank>ticket<S2SV_blank>with<S2SV_blank>non<S2SV_blank>\" \"anonymous<S2SV_blank>client<S2SV_blank>name:<S2SV_blank>%s\" , r -> client_name ) ; ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; goto out ; } ret = _kdc_db_fetch ( context , config , r -> client_princ , HDB_F_GET_CLIENT | flags , NULL , & r -> clientdb , & r -> client ) ; if ( ret == HDB_ERR_NOT_FOUND_HERE ) { kdc_log ( context , config , 5 , \"client<S2SV_blank>%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>secrets<S2SV_blank>at<S2SV_blank>this<S2SV_blank>KDC,<S2SV_blank>need<S2SV_blank>to<S2SV_blank>proxy\" , r -> client_name ) ; goto out ; } else if ( ret == HDB_ERR_WRONG_REALM ) { char * fixed_client_name = NULL ; ret = krb5_unparse_name ( context , r -> client -> entry . principal , & fixed_client_name ) ; if ( ret ) { goto out ; } kdc_log ( context , config , 0 , \"WRONG_REALM<S2SV_blank>-<S2SV_blank>%s<S2SV_blank>-><S2SV_blank>%s\" , r -> client_name , fixed_client_name ) ; free ( fixed_client_name ) ; ret = _kdc_fast_mk_error ( context , r , & error_method , r -> armor_crypto , & req -> req_body , KRB5_KDC_ERR_WRONG_REALM , NULL , r -> server_princ , NULL , & r -> client -> entry . principal -> realm , NULL , NULL , reply ) ; goto out ; } else if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"UNKNOWN<S2SV_blank>--<S2SV_blank>%s:<S2SV_blank>%s\" , r -> client_name , msg ) ; krb5_free_error_message ( context , msg ) ; ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; goto out ; } ret = _kdc_db_fetch ( context , config , r -> server_princ , HDB_F_GET_SERVER | HDB_F_GET_KRBTGT | flags , NULL , NULL , & r -> server ) ; if ( ret == HDB_ERR_NOT_FOUND_HERE ) { kdc_log ( context , config , 5 , \"target<S2SV_blank>%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>secrets<S2SV_blank>at<S2SV_blank>this<S2SV_blank>KDC,<S2SV_blank>need<S2SV_blank>to<S2SV_blank>proxy\" , r -> server_name ) ; goto out ; } else if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"UNKNOWN<S2SV_blank>--<S2SV_blank>%s:<S2SV_blank>%s\" , r -> server_name , msg ) ; krb5_free_error_message ( context , msg ) ; ret = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; goto out ; } ret = _kdc_find_etype ( context , krb5_principal_is_krbtgt ( context , r -> server_princ ) ? config -> tgt_use_strongest_session_key : config -> svc_use_strongest_session_key , FALSE , r -> client , b -> etype . val , b -> etype . len , & r -> sessionetype , NULL ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Client<S2SV_blank>(%s)<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>no<S2SV_blank>common<S2SV_blank>enctypes<S2SV_blank>with<S2SV_blank>KDC<S2SV_blank>\" \"to<S2SV_blank>use<S2SV_blank>for<S2SV_blank>the<S2SV_blank>session<S2SV_blank>key\" , r -> client_name , from ) ; goto out ; } if ( req -> padata ) { unsigned int n ; log_patypes ( context , config , req -> padata ) ; for ( n = 0 ; ! found_pa && n < sizeof ( pat ) / sizeof ( pat [ 0 ] ) ; n ++ ) { if ( pat [ n ] . validate == NULL ) continue ; if ( r -> armor_crypto == NULL && ( pat [ n ] . flags & PA_REQ_FAST ) ) continue ; kdc_log ( context , config , 5 , \"Looking<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>pa-data<S2SV_blank>--<S2SV_blank>%s\" , pat [ n ] . name , r -> client_name ) ; i = 0 ; pa = _kdc_find_padata ( req , & i , pat [ n ] . type ) ; if ( pa ) { ret = pat [ n ] . validate ( r , pa ) ; if ( ret != 0 ) { goto out ; } kdc_log ( context , config , 0 , \"%s<S2SV_blank>pre-authentication<S2SV_blank>succeeded<S2SV_blank>--<S2SV_blank>%s\" , pat [ n ] . name , r -> client_name ) ; found_pa = 1 ; r -> et . flags . pre_authent = 1 ; } } } if ( found_pa == 0 ) { Key * ckey = NULL ; size_t n ; for ( n = 0 ; n < sizeof ( pat ) / sizeof ( pat [ 0 ] ) ; n ++ ) { if ( ( pat [ n ] . flags & PA_ANNOUNCE ) == 0 ) continue ; ret = krb5_padata_add ( context , & error_method , pat [ n ] . type , NULL , 0 ) ; if ( ret ) goto out ; } ret = _kdc_find_etype ( context , config -> preauth_use_strongest_session_key , TRUE , r -> client , b -> etype . val , b -> etype . len , NULL , & ckey ) ; if ( ret == 0 ) { if ( older_enctype ( ckey -> key . keytype ) ) { ret = get_pa_etype_info ( context , config , & error_method , ckey ) ; if ( ret ) goto out ; } ret = get_pa_etype_info2 ( context , config , & error_method , ckey ) ; if ( ret ) goto out ; } if ( require_preauth_p ( r ) || _kdc_is_anon_request ( b ) ) { ret = KRB5KDC_ERR_PREAUTH_REQUIRED ; _kdc_set_e_text ( r , \"Need<S2SV_blank>to<S2SV_blank>use<S2SV_blank>PA-ENC-TIMESTAMP/PA-PK-AS-REQ\" ) ; goto out ; } if ( ckey == NULL ) { ret = KRB5KDC_ERR_CLIENT_NOTYET ; _kdc_set_e_text ( r , \"Doesn\\'t<S2SV_blank>have<S2SV_blank>a<S2SV_blank>client<S2SV_blank>key<S2SV_blank>available\" ) ; goto out ; } krb5_free_keyblock_contents ( r -> context , & r -> reply_key ) ; ret = krb5_copy_keyblock_contents ( r -> context , & ckey -> key , & r -> reply_key ) ; if ( ret ) goto out ; } if ( r -> clientdb -> hdb_auth_status ) { r -> clientdb -> hdb_auth_status ( context , r -> clientdb , r -> client , HDB_AUTH_SUCCESS ) ; } ret = _kdc_check_access ( context , config , r -> client , r -> client_name , r -> server , r -> server_name , req , & error_method ) ; if ( ret ) goto out ; ret = _kdc_get_preferred_key ( context , config , r -> server , r -> server_name , & setype , & skey ) ; if ( ret ) goto out ; if ( f . renew || f . validate || f . proxy || f . forwarded || f . enc_tkt_in_skey || ( _kdc_is_anon_request ( b ) && ! config -> allow_anonymous ) ) { ret = KRB5KDC_ERR_BADOPTION ; _kdc_set_e_text ( r , \"Bad<S2SV_blank>KDC<S2SV_blank>options\" ) ; goto out ; } rep . pvno = 5 ; rep . msg_type = krb_as_rep ; if ( _kdc_is_anonymous ( context , r -> client_princ ) ) { Realm anon_realm = KRB5_ANON_REALM ; ret = copy_Realm ( & anon_realm , & rep . crealm ) ; } else ret = copy_Realm ( & r -> client -> entry . principal -> realm , & rep . crealm ) ; if ( ret ) goto out ; ret = _krb5_principal2principalname ( & rep . cname , r -> client -> entry . principal ) ; if ( ret ) goto out ; rep . ticket . tkt_vno = 5 ; ret = copy_Realm ( & r -> server -> entry . principal -> realm , & rep . ticket . realm ) ; if ( ret ) goto out ; _krb5_principal2principalname ( & rep . ticket . sname , r -> server -> entry . principal ) ; # define CNT ( sp , t ) ( ( ( sp ) -> sname -> name_type ) == KRB5_NT_ ## t ) if ( CNT ( b , UNKNOWN ) || CNT ( b , PRINCIPAL ) || CNT ( b , SRV_INST ) || CNT ( b , SRV_HST ) || CNT ( b , SRV_XHST ) ) rep . ticket . sname . name_type = b -> sname -> name_type ; # undef CNT r -> et . flags . initial = 1 ; if ( r -> client -> entry . flags . forwardable && r -> server -> entry . flags . forwardable ) r -> et . flags . forwardable = f . forwardable ; else if ( f . forwardable ) { _kdc_set_e_text ( r , \"Ticket<S2SV_blank>may<S2SV_blank>not<S2SV_blank>be<S2SV_blank>forwardable\" ) ; ret = KRB5KDC_ERR_POLICY ; goto out ; } if ( r -> client -> entry . flags . proxiable && r -> server -> entry . flags . proxiable ) r -> et . flags . proxiable = f . proxiable ; else if ( f . proxiable ) { _kdc_set_e_text ( r , \"Ticket<S2SV_blank>may<S2SV_blank>not<S2SV_blank>be<S2SV_blank>proxiable\" ) ; ret = KRB5KDC_ERR_POLICY ; goto out ; } if ( r -> client -> entry . flags . postdate && r -> server -> entry . flags . postdate ) r -> et . flags . may_postdate = f . allow_postdate ; else if ( f . allow_postdate ) { _kdc_set_e_text ( r , \"Ticket<S2SV_blank>may<S2SV_blank>not<S2SV_blank>be<S2SV_blank>postdate\" ) ; ret = KRB5KDC_ERR_POLICY ; goto out ; } if ( ! _kdc_check_addresses ( context , config , b -> addresses , from_addr ) ) { _kdc_set_e_text ( r , \"Bad<S2SV_blank>address<S2SV_blank>list<S2SV_blank>in<S2SV_blank>requested\" ) ; ret = KRB5KRB_AP_ERR_BADADDR ; goto out ; } ret = copy_PrincipalName ( & rep . cname , & r -> et . cname ) ; if ( ret ) goto out ; ret = copy_Realm ( & rep . crealm , & r -> et . crealm ) ; if ( ret ) goto out ; { time_t start ; time_t t ; start = r -> et . authtime = kdc_time ; if ( f . postdated && req -> req_body . from ) { ALLOC ( r -> et . starttime ) ; start = * r -> et . starttime = * req -> req_body . from ; r -> et . flags . invalid = 1 ; r -> et . flags . postdated = 1 ; } _kdc_fix_time ( & b -> till ) ; t = * b -> till ; if ( r -> client -> entry . max_life ) t = start + min ( t - start , * r -> client -> entry . max_life ) ; if ( r -> server -> entry . max_life ) t = start + min ( t - start , * r -> server -> entry . max_life ) ; # if 0 t = min ( t , start + realm -> max_life ) ; # endif r -> et . endtime = t ; if ( f . renewable_ok && r -> et . endtime < * b -> till ) { f . renewable = 1 ; if ( b -> rtime == NULL ) { ALLOC ( b -> rtime ) ; * b -> rtime = 0 ; } if ( * b -> rtime < * b -> till ) * b -> rtime = * b -> till ; } if ( f . renewable && b -> rtime ) { t = * b -> rtime ; if ( t == 0 ) t = MAX_TIME ; if ( r -> client -> entry . max_renew ) t = start + min ( t - start , * r -> client -> entry . max_renew ) ; if ( r -> server -> entry . max_renew ) t = start + min ( t - start , * r -> server -> entry . max_renew ) ; # if 0 t = min ( t , start + realm -> max_renew ) ; # endif ALLOC ( r -> et . renew_till ) ; * r -> et . renew_till = t ; r -> et . flags . renewable = 1 ; } } if ( _kdc_is_anon_request ( b ) ) r -> et . flags . anonymous = 1 ; if ( b -> addresses ) { ALLOC ( r -> et . caddr ) ; copy_HostAddresses ( b -> addresses , r -> et . caddr ) ; } r -> et . transited . tr_type = DOMAIN_X500_COMPRESS ; krb5_data_zero ( & r -> et . transited . contents ) ; r -> ek . last_req . val = malloc ( 2 * sizeof ( * r -> ek . last_req . val ) ) ; if ( r -> ek . last_req . val == NULL ) { ret = ENOMEM ; goto out ; } r -> ek . last_req . len = 0 ; if ( r -> client -> entry . pw_end && ( config -> kdc_warn_pwexpire == 0 || kdc_time + config -> kdc_warn_pwexpire >= * r -> client -> entry . pw_end ) ) { r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_type = LR_PW_EXPTIME ; r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_value = * r -> client -> entry . pw_end ; ++ r -> ek . last_req . len ; } if ( r -> client -> entry . valid_end ) { r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_type = LR_ACCT_EXPTIME ; r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_value = * r -> client -> entry . valid_end ; ++ r -> ek . last_req . len ; } if ( r -> ek . last_req . len == 0 ) { r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_type = LR_NONE ; r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_value = 0 ; ++ r -> ek . last_req . len ; } r -> ek . nonce = b -> nonce ; if ( r -> client -> entry . valid_end || r -> client -> entry . pw_end ) { ALLOC ( r -> ek . key_expiration ) ; if ( r -> client -> entry . valid_end ) { if ( r -> client -> entry . pw_end ) * r -> ek . key_expiration = min ( * r -> client -> entry . valid_end , * r -> client -> entry . pw_end ) ; else * r -> ek . key_expiration = * r -> client -> entry . valid_end ; } else * r -> ek . key_expiration = * r -> client -> entry . pw_end ; } else r -> ek . key_expiration = NULL ; r -> ek . flags = r -> et . flags ; r -> ek . authtime = r -> et . authtime ; if ( r -> et . starttime ) { ALLOC ( r -> ek . starttime ) ; * r -> ek . starttime = * r -> et . starttime ; } r -> ek . endtime = r -> et . endtime ; if ( r -> et . renew_till ) { ALLOC ( r -> ek . renew_till ) ; * r -> ek . renew_till = * r -> et . renew_till ; } ret = copy_Realm ( & rep . ticket . realm , & r -> ek . srealm ) ; if ( ret ) goto out ; ret = copy_PrincipalName ( & rep . ticket . sname , & r -> ek . sname ) ; if ( ret ) goto out ; if ( r -> et . caddr ) { ALLOC ( r -> ek . caddr ) ; copy_HostAddresses ( r -> et . caddr , r -> ek . caddr ) ; } if ( r -> session_key . keytype == ETYPE_NULL ) { ret = krb5_generate_random_keyblock ( context , r -> sessionetype , & r -> session_key ) ; if ( ret ) goto out ; } if ( r -> reply_key . keytype == ETYPE_NULL ) { _kdc_set_e_text ( r , \"Client<S2SV_blank>have<S2SV_blank>no<S2SV_blank>reply<S2SV_blank>key\" ) ; ret = KRB5KDC_ERR_CLIENT_NOTYET ; goto out ; } ret = copy_EncryptionKey ( & r -> session_key , & r -> et . key ) ; if ( ret ) goto out ; ret = copy_EncryptionKey ( & r -> session_key , & r -> ek . key ) ; if ( ret ) goto out ; if ( r -> outpadata . len ) { ALLOC ( rep . padata ) ; if ( rep . padata == NULL ) { ret = ENOMEM ; goto out ; } ret = copy_METHOD_DATA ( & r -> outpadata , rep . padata ) ; if ( ret ) goto out ; } if ( send_pac_p ( context , req ) ) { generate_pac ( r , skey ) ; } _kdc_log_timestamp ( context , config , \"AS-REQ\" , r -> et . authtime , r -> et . starttime , r -> et . endtime , r -> et . renew_till ) ; ret = _kdc_add_KRB5SignedPath ( context , config , r -> server , setype , r -> client -> entry . principal , NULL , NULL , & r -> et ) ; if ( ret ) goto out ; log_as_req ( context , config , r -> reply_key . keytype , setype , b ) ; r -> et . flags . enc_pa_rep = r -> ek . flags . enc_pa_rep = 1 ; i = 0 ; pa = _kdc_find_padata ( req , & i , KRB5_PADATA_REQ_ENC_PA_REP ) ; if ( pa ) { ret = add_enc_pa_rep ( r ) ; if ( ret ) { const char * msg = krb5_get_error_message ( r -> context , ret ) ; _kdc_r_log ( r , 0 , \"add_enc_pa_rep<S2SV_blank>failed:<S2SV_blank>%s:<S2SV_blank>%d\" , msg , ret ) ; krb5_free_error_message ( r -> context , msg ) ; goto out ; } } ret = _kdc_encode_reply ( context , config , r -> armor_crypto , req -> req_body . nonce , & rep , & r -> et , & r -> ek , setype , r -> server -> entry . kvno , & skey -> key , r -> client -> entry . kvno , & r -> reply_key , 0 , & r -> e_text , reply ) ; if ( ret ) goto out ; if ( datagram_reply && reply -> length > config -> max_datagram_reply_length ) { krb5_data_free ( reply ) ; ret = KRB5KRB_ERR_RESPONSE_TOO_BIG ; _kdc_set_e_text ( r , \"Reply<S2SV_blank>packet<S2SV_blank>too<S2SV_blank>large\" ) ; } out : free_AS_REP ( & rep ) ; if ( ret != 0 && ret != HDB_ERR_NOT_FOUND_HERE && reply -> length == 0 ) { ret = _kdc_fast_mk_error ( context , r , & error_method , r -> armor_crypto , & req -> req_body , ret , r -> e_text , r -> server_princ , <S2SV_StartBug> & r -> client_princ -> name , <S2SV_EndBug> <S2SV_StartBug> & r -> client_princ -> realm , <S2SV_EndBug> NULL , NULL , reply ) ; if ( ret ) goto out2 ; } out2 : free_EncTicketPart ( & r -> et ) ; free_EncKDCRepPart ( & r -> ek ) ; free_KDCFastState ( & r -> fast ) ; if ( error_method . len ) free_METHOD_DATA ( & error_method ) ; if ( r -> outpadata . len ) free_METHOD_DATA ( & r -> outpadata ) ; if ( r -> client_princ ) { krb5_free_principal ( context , r -> client_princ ) ; r -> client_princ = NULL ; } if ( r -> client_name ) { free ( r -> client_name ) ; r -> client_name = NULL ; } if ( r -> server_princ ) { krb5_free_principal ( context , r -> server_princ ) ; r -> server_princ = NULL ; } if ( r -> server_name ) { free ( r -> server_name ) ; r -> server_name = NULL ; } if ( r -> client ) _kdc_free_ent ( context , r -> client ) ; if ( r -> server ) _kdc_free_ent ( context , r -> server ) ; if ( r -> armor_crypto ) { krb5_crypto_destroy ( r -> context , r -> armor_crypto ) ; r -> armor_crypto = NULL ; } krb5_free_keyblock_contents ( r -> context , & r -> reply_key ) ; krb5_free_keyblock_contents ( r -> context , & r -> session_key ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> server_princ , <S2SV_ModEnd> r -> client_princ <S2SV_ModStart> r -> client_princ ? & r -> client_princ -> name : NULL , <S2SV_ModEnd> r -> client_princ <S2SV_ModStart> r -> client_princ ? & r -> client_princ -> realm : NULL <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1958\n\n```\nCWE-264 static __inline__ int scm_check_creds ( struct ucred * creds ) { const struct cred * cred = current_cred ( ) ; kuid_t uid = make_kuid ( cred -> user_ns , creds -> uid ) ; kgid_t gid = make_kgid ( cred -> user_ns , creds -> gid ) ; if ( ! uid_valid ( uid ) || ! gid_valid ( gid ) ) return - EINVAL ; <S2SV_StartBug> if ( ( creds -> pid == task_tgid_vnr ( current ) || nsown_capable ( CAP_SYS_ADMIN ) ) && <S2SV_EndBug> ( ( uid_eq ( uid , cred -> uid ) || uid_eq ( uid , cred -> euid ) || uid_eq ( uid , cred -> suid ) ) || nsown_capable ( CAP_SETUID ) ) && ( ( gid_eq ( gid , cred -> gid ) || gid_eq ( gid , cred -> egid ) || gid_eq ( gid , cred -> sgid ) ) || nsown_capable ( CAP_SETGID ) ) ) { return 0 ; } return - EPERM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current ) || ns_capable ( current -> nsproxy -> pid_ns -> user_ns , <S2SV_ModEnd> CAP_SYS_ADMIN ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2008-7316\n\n```\nCWE-20 static void __iov_iter_advance_iov ( struct iov_iter * i , size_t bytes ) { if ( likely ( i -> nr_segs == 1 ) ) { i -> iov_offset += bytes ; } else { const struct iovec * iov = i -> iov ; size_t base = i -> iov_offset ; <S2SV_StartBug> while ( bytes ) { <S2SV_EndBug> int copy = min ( bytes , iov -> iov_len - base ) ; bytes -= copy ; base += copy ; if ( iov -> iov_len == base ) { iov ++ ; base = 0 ; } } i -> iov = iov ; i -> iov_offset = base ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( bytes || ! iov -> iov_len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: nan\n\n```\nCWE-000 static HB_Bool myanmar_shape_syllable ( HB_Bool openType , HB_ShaperItem * item , HB_Bool invalid ) { # ifndef NO_OPENTYPE const int availableGlyphs = item -> num_glyphs ; # endif const HB_UChar16 * uc = item -> string + item -> item . pos ; int vowel_e = - 1 ; int kinzi = - 1 ; int medial_ra = - 1 ; int base = - 1 ; int i ; int len = 0 ; unsigned short reordered [ 32 ] ; unsigned char properties [ 32 ] ; enum { AboveForm = 0x01 , PreForm = 0x02 , PostForm = 0x04 , BelowForm = 0x08 } ; HB_Bool lastWasVirama = FALSE ; int basePos = - 1 ; memset ( properties , 0 , 32 * sizeof ( unsigned char ) ) ; assert ( item -> item . length < 32 ) ; # ifdef MYANMAR_DEBUG printf ( \"original:\" ) ; for ( i = 0 ; i < ( int ) item -> item . length ; i ++ ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d:<S2SV_blank>%4x\" , i , uc [ i ] ) ; } # endif for ( i = 0 ; i < ( int ) item -> item . length ; ++ i ) { HB_UChar16 chr = uc [ i ] ; if ( chr == Mymr_C_VOWEL_E ) { vowel_e = i ; continue ; } if ( i == 0 && chr == Mymr_C_NGA && i + 2 < ( int ) item -> item . length && uc [ i + 1 ] == Mymr_C_VIRAMA ) { int mc = getMyanmarCharClass ( uc [ i + 2 ] ) ; if ( ( mc & Mymr_CF_CONSONANT ) == Mymr_CF_CONSONANT ) { kinzi = i ; continue ; } } if ( base >= 0 && chr == Mymr_C_VIRAMA && i + 1 < ( int ) item -> item . length && uc [ i + 1 ] == Mymr_C_RA ) { medial_ra = i ; continue ; } if ( base < 0 ) base = i ; } MMDEBUG ( \"\\\\n<S2SV_blank><S2SV_blank>base=%d,<S2SV_blank>vowel_e=%d,<S2SV_blank>kinzi=%d,<S2SV_blank>medial_ra=%d\" , base , vowel_e , kinzi , medial_ra ) ; if ( vowel_e >= 0 ) { reordered [ 0 ] = Mymr_C_VOWEL_E ; len = 1 ; } if ( medial_ra >= 0 ) { reordered [ len ] = Mymr_C_VIRAMA ; reordered [ len + 1 ] = Mymr_C_RA ; properties [ len ] = PreForm ; properties [ len + 1 ] = PreForm ; len += 2 ; } if ( invalid ) { reordered [ len ] = C_DOTTED_CIRCLE ; ++ len ; } for ( i = 0 ; i < ( int ) item -> item . length ; ++ i ) { hb_uint16 chr = uc [ i ] ; MymrCharClass cc ; if ( i == vowel_e ) continue ; if ( i == medial_ra || i == kinzi ) { ++ i ; continue ; } cc = getMyanmarCharClass ( uc [ i ] ) ; if ( kinzi >= 0 && i > base && ( cc & Mymr_CF_AFTER_KINZI ) ) { reordered [ len ] = Mymr_C_NGA ; <S2SV_StartBug> reordered [ len + 1 ] = Mymr_C_VIRAMA ; <S2SV_EndBug> properties [ len - 1 ] = AboveForm ; properties [ len ] = AboveForm ; len += 2 ; kinzi = - 1 ; } if ( lastWasVirama ) { int prop = 0 ; switch ( cc & Mymr_CF_POS_MASK ) { case Mymr_CF_POS_BEFORE : prop = PreForm ; break ; case Mymr_CF_POS_BELOW : prop = BelowForm ; break ; case Mymr_CF_POS_ABOVE : prop = AboveForm ; break ; case Mymr_CF_POS_AFTER : prop = PostForm ; break ; default : break ; } properties [ len - 1 ] = prop ; properties [ len ] = prop ; if ( basePos >= 0 && basePos == len - 2 ) properties [ len - 2 ] = prop ; } lastWasVirama = ( chr == Mymr_C_VIRAMA ) ; if ( i == base ) basePos = len ; if ( ( chr != Mymr_C_SIGN_ZWNJ && chr != Mymr_C_SIGN_ZWJ ) || ! len ) { reordered [ len ] = chr ; ++ len ; } } if ( kinzi >= 0 ) { reordered [ len ] = Mymr_C_NGA ; reordered [ len + 1 ] = Mymr_C_VIRAMA ; properties [ len ] = AboveForm ; properties [ len + 1 ] = AboveForm ; len += 2 ; } if ( ! item -> font -> klass -> convertStringToGlyphIndices ( item -> font , reordered , len , item -> glyphs , & item -> num_glyphs , item -> item . bidiLevel % 2 ) ) return FALSE ; MMDEBUG ( \"after<S2SV_blank>shaping:<S2SV_blank>len=%d\" , len ) ; for ( i = 0 ; i < len ; i ++ ) { item -> attributes [ i ] . mark = FALSE ; item -> attributes [ i ] . clusterStart = FALSE ; item -> attributes [ i ] . justification = 0 ; item -> attributes [ i ] . zeroWidth = FALSE ; MMDEBUG ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d:<S2SV_blank>%4x<S2SV_blank>property=%x\" , i , reordered [ i ] , properties [ i ] ) ; } # ifndef NO_OPENTYPE if ( openType ) { hb_uint32 where [ 32 ] ; for ( i = 0 ; i < len ; ++ i ) { where [ i ] = ~ ( PreSubstProperty | BelowSubstProperty | AboveSubstProperty | PostSubstProperty | CligProperty | PositioningProperties ) ; if ( properties [ i ] & PreForm ) where [ i ] &= ~ PreFormProperty ; if ( properties [ i ] & BelowForm ) where [ i ] &= ~ BelowFormProperty ; if ( properties [ i ] & AboveForm ) where [ i ] &= ~ AboveFormProperty ; if ( properties [ i ] & PostForm ) where [ i ] &= ~ PostFormProperty ; } HB_OpenTypeShape ( item , where ) ; if ( ! HB_OpenTypePosition ( item , availableGlyphs , FALSE ) ) return FALSE ; } else # endif { MMDEBUG ( \"Not<S2SV_blank>using<S2SV_blank>openType\" ) ; HB_HeuristicPosition ( item ) ; } item -> attributes [ 0 ] . clusterStart = TRUE ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = Mymr_C_VIRAMA ; if ( len > 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8066\n\n```\nCWE-119 static int gs_usb_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct gs_usb * dev ; int rc = - ENOMEM ; unsigned int icount , i ; <S2SV_StartBug> struct gs_host_config hconf = { <S2SV_EndBug> . byte_order = 0x0000beef , } ; <S2SV_StartBug> struct gs_device_config dconf ; <S2SV_EndBug> rc = usb_control_msg ( interface_to_usbdev ( intf ) , usb_sndctrlpipe ( interface_to_usbdev ( intf ) , 0 ) , GS_USB_BREQ_HOST_FORMAT , USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE , 1 , intf -> altsetting [ 0 ] . desc . bInterfaceNumber , <S2SV_StartBug> & hconf , <S2SV_EndBug> <S2SV_StartBug> sizeof ( hconf ) , <S2SV_EndBug> 1000 ) ; <S2SV_StartBug> if ( rc < 0 ) { <S2SV_EndBug> dev_err ( & intf -> dev , \"Couldn\\'t<S2SV_blank>send<S2SV_blank>data<S2SV_blank>format<S2SV_blank>(err=%d)\\\\n\" , rc ) ; return rc ; <S2SV_StartBug> } <S2SV_EndBug> rc = usb_control_msg ( interface_to_usbdev ( intf ) , usb_rcvctrlpipe ( interface_to_usbdev ( intf ) , 0 ) , GS_USB_BREQ_DEVICE_CONFIG , USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE , 1 , intf -> altsetting [ 0 ] . desc . bInterfaceNumber , <S2SV_StartBug> & dconf , <S2SV_EndBug> <S2SV_StartBug> sizeof ( dconf ) , <S2SV_EndBug> 1000 ) ; if ( rc < 0 ) { dev_err ( & intf -> dev , \"Couldn\\'t<S2SV_blank>get<S2SV_blank>device<S2SV_blank>config:<S2SV_blank>(err=%d)\\\\n\" , rc ) ; <S2SV_StartBug> return rc ; <S2SV_EndBug> } icount = dconf . icount + 1 ; dev_info ( & intf -> dev , \"Configuring<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>interfaces\\\\n\" , icount ) ; if ( icount > GS_MAX_INTF ) { dev_err ( & intf -> dev , \"Driver<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>more<S2SV_blank>that<S2SV_blank>%d<S2SV_blank>CAN<S2SV_blank>interfaces\\\\n\" , GS_MAX_INTF ) ; <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> } dev = kzalloc ( sizeof ( * dev ) , GFP_KERNEL ) ; <S2SV_StartBug> if ( ! dev ) <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> init_usb_anchor ( & dev -> rx_submitted ) ; <S2SV_EndBug> atomic_set ( & dev -> active_channels , 0 ) ; usb_set_intfdata ( intf , dev ) ; dev -> udev = interface_to_usbdev ( intf ) ; for ( i = 0 ; i < icount ; i ++ ) { <S2SV_StartBug> dev -> canch [ i ] = gs_make_candev ( i , intf , & dconf ) ; <S2SV_EndBug> if ( IS_ERR_OR_NULL ( dev -> canch [ i ] ) ) { rc = PTR_ERR ( dev -> canch [ i ] ) ; icount = i ; for ( i = 0 ; i < icount ; i ++ ) gs_destroy_candev ( dev -> canch [ i ] ) ; usb_kill_anchored_urbs ( & dev -> rx_submitted ) ; <S2SV_StartBug> kfree ( dev ) ; <S2SV_EndBug> return rc ; } dev -> canch [ i ] -> parent = dev ; } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; struct gs_host_config * hconf <S2SV_ModEnd> ; struct gs_device_config <S2SV_ModStart> ; struct gs_device_config * dconf ; hconf = kmalloc ( sizeof ( * hconf ) , GFP_KERNEL ) ; if ( ! hconf ) return - ENOMEM ; hconf -> byte_order = 0x0000beef <S2SV_ModEnd> ; rc = <S2SV_ModStart> . bInterfaceNumber , <S2SV_ModEnd> hconf , sizeof <S2SV_ModStart> , sizeof ( * <S2SV_ModStart> 1000 ) ; kfree ( hconf ) ; <S2SV_ModStart> rc ; } dconf = kmalloc ( sizeof ( * dconf ) , GFP_KERNEL ) ; if ( ! dconf ) return - ENOMEM ; <S2SV_ModStart> . bInterfaceNumber , <S2SV_ModEnd> dconf , sizeof <S2SV_ModStart> , sizeof ( * <S2SV_ModStart> rc ) ; kfree ( dconf ) ; return rc ; } icount = dconf -> <S2SV_ModEnd> icount + 1 <S2SV_ModStart> GS_MAX_INTF ) ; kfree ( dconf ) ; <S2SV_ModStart> ! dev ) { kfree ( dconf ) ; <S2SV_ModStart> - ENOMEM ; } <S2SV_ModStart> , intf , <S2SV_ModEnd> dconf ) ; <S2SV_ModStart> ; kfree ( dconf ) ; kfree ( <S2SV_ModStart> dev ; } kfree ( dconf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void MoveTo ( double x1 , double y1 ) { <S2SV_StartBug> outpos += <S2SV_EndBug> sprintf ( outpos , \"\\\\n<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>m\" , x1 , y1 ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> y1 ) { sprintf ( outputbuffer <S2SV_ModEnd> , \"\\\\n<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>m\" , <S2SV_ModStart> y1 ) ; sendClean ( outputbuffer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3122\n\n```\nCWE-400 static int try_to_unmap_cluster ( unsigned long cursor , unsigned int * mapcount , struct vm_area_struct * vma , struct page * check_page ) { struct mm_struct * mm = vma -> vm_mm ; pmd_t * pmd ; pte_t * pte ; pte_t pteval ; spinlock_t * ptl ; struct page * page ; unsigned long address ; unsigned long mmun_start ; unsigned long mmun_end ; unsigned long end ; int ret = SWAP_AGAIN ; int locked_vma = 0 ; address = ( vma -> vm_start + cursor ) & CLUSTER_MASK ; end = address + CLUSTER_SIZE ; if ( address < vma -> vm_start ) address = vma -> vm_start ; if ( end > vma -> vm_end ) end = vma -> vm_end ; pmd = mm_find_pmd ( mm , address ) ; if ( ! pmd ) return ret ; mmun_start = address ; mmun_end = end ; mmu_notifier_invalidate_range_start ( mm , mmun_start , mmun_end ) ; if ( down_read_trylock ( & vma -> vm_mm -> mmap_sem ) ) { locked_vma = ( vma -> vm_flags & VM_LOCKED ) ; if ( ! locked_vma ) up_read ( & vma -> vm_mm -> mmap_sem ) ; } pte = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; update_hiwater_rss ( mm ) ; for ( ; address < end ; pte ++ , address += PAGE_SIZE ) { if ( ! pte_present ( * pte ) ) continue ; page = vm_normal_page ( vma , address , * pte ) ; BUG_ON ( ! page || PageAnon ( page ) ) ; if ( locked_vma ) { <S2SV_StartBug> mlock_vma_page ( page ) ; <S2SV_EndBug> <S2SV_StartBug> if ( page == check_page ) <S2SV_EndBug> <S2SV_StartBug> ret = SWAP_MLOCK ; <S2SV_EndBug> continue ; } if ( ptep_clear_flush_young_notify ( vma , address , pte ) ) continue ; flush_cache_page ( vma , address , pte_pfn ( * pte ) ) ; pteval = ptep_clear_flush ( vma , address , pte ) ; if ( page -> index != linear_page_index ( vma , address ) ) { pte_t ptfile = pgoff_to_pte ( page -> index ) ; if ( pte_soft_dirty ( pteval ) ) pte_file_mksoft_dirty ( ptfile ) ; set_pte_at ( mm , address , pte , ptfile ) ; } if ( pte_dirty ( pteval ) ) set_page_dirty ( page ) ; page_remove_rmap ( page ) ; page_cache_release ( page ) ; dec_mm_counter ( mm , MM_FILEPAGES ) ; ( * mapcount ) -- ; } pte_unmap_unlock ( pte - 1 , ptl ) ; mmu_notifier_invalidate_range_end ( mm , mmun_start , mmun_end ) ; if ( locked_vma ) up_read ( & vma -> vm_mm -> mmap_sem ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> locked_vma ) { <S2SV_ModEnd> if ( page <S2SV_ModStart> == check_page ) { mlock_vma_page ( page ) ; <S2SV_ModStart> = SWAP_MLOCK ; } else if ( trylock_page ( page ) ) { mlock_vma_page ( page ) ; unlock_page ( page ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11072\n\n```\nCWE-190 static void test_burl_normalize ( void ) { buffer * psrc = buffer_init ( ) ; buffer * ptmp = buffer_init ( ) ; int flags ; flags = HTTP_PARSEOPT_URL_NORMALIZE_UNRESERVED ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"no-slash\" ) , CONST_STR_LEN ( \"no-slash\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\" ) , CONST_STR_LEN ( \"/\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc\" ) , CONST_STR_LEN ( \"/abc\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc/\" ) , CONST_STR_LEN ( \"/abc/\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc/def\" ) , CONST_STR_LEN ( \"/abc/def\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?\" ) , CONST_STR_LEN ( \"/abc?\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d\" ) , CONST_STR_LEN ( \"/abc?d\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=\" ) , CONST_STR_LEN ( \"/abc?d=\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e\" ) , CONST_STR_LEN ( \"/abc?d=e\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&\" ) , CONST_STR_LEN ( \"/abc?d=e&\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&f\" ) , CONST_STR_LEN ( \"/abc?d=e&f\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&f=g\" ) , CONST_STR_LEN ( \"/abc?d=e&f=g\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&f=g#\" ) , CONST_STR_LEN ( \"/abc?d=e&f=g\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&f=g#any\" ) , CONST_STR_LEN ( \"/abc?d=e&f=g\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2F\" ) , CONST_STR_LEN ( \"/%2F\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2f\" ) , CONST_STR_LEN ( \"/%2F\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%20\" ) , CONST_STR_LEN ( \"/%20\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2b\" ) , CONST_STR_LEN ( \"/%2B\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2B\" ) , CONST_STR_LEN ( \"/%2B\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%3a\" ) , CONST_STR_LEN ( \"/%3A\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%3A\" ) , CONST_STR_LEN ( \"/%3A\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/~test%20ä_\" ) , CONST_STR_LEN ( \"/~test%20%C3%A4_\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\375\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\376\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\377\" ) , \"\" , ( size_t ) - 2 ) ; flags = HTTP_PARSEOPT_URL_NORMALIZE_REQUIRED ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\" ) , CONST_STR_LEN ( \"/\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc\" ) , CONST_STR_LEN ( \"/abc\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc/\" ) , CONST_STR_LEN ( \"/abc/\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc/def\" ) , CONST_STR_LEN ( \"/abc/def\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?\" ) , CONST_STR_LEN ( \"/abc?\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d\" ) , CONST_STR_LEN ( \"/abc?d\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=\" ) , CONST_STR_LEN ( \"/abc?d=\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e\" ) , CONST_STR_LEN ( \"/abc?d=e\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&\" ) , CONST_STR_LEN ( \"/abc?d=e&\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&f\" ) , CONST_STR_LEN ( \"/abc?d=e&f\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&f=g\" ) , CONST_STR_LEN ( \"/abc?d=e&f=g\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&f=g#\" ) , CONST_STR_LEN ( \"/abc?d=e&f=g\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/abc?d=e&f=g#any\" ) , CONST_STR_LEN ( \"/abc?d=e&f=g\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2F\" ) , CONST_STR_LEN ( \"/%2F\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2f\" ) , CONST_STR_LEN ( \"/%2F\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%20\" ) , CONST_STR_LEN ( \"/%20\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2b\" ) , CONST_STR_LEN ( \"/+\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2B\" ) , CONST_STR_LEN ( \"/+\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%3a\" ) , CONST_STR_LEN ( \"/:\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%3A\" ) , CONST_STR_LEN ( \"/:\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/~test%20ä_\" ) , CONST_STR_LEN ( \"/~test%20%C3%A4_\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\375\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\376\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\377\" ) , \"\" , ( size_t ) - 2 ) ; flags |= HTTP_PARSEOPT_URL_NORMALIZE_CTRLS_REJECT ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\a\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\t\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\r\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/\\\\177\" ) , \"\" , ( size_t ) - 2 ) ; # if defined ( __WIN32 ) || defined ( __CYGWIN__ ) flags |= HTTP_PARSEOPT_URL_NORMALIZE_PATH_BACKSLASH_TRANS ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a\\\\\\\\b\" ) , CONST_STR_LEN ( \"/a/b\" ) ) ; # endif flags |= HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b?c=/\" ) , CONST_STR_LEN ( \"/a/b?c=/\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b?c=%2f\" ) , CONST_STR_LEN ( \"/a/b?c=/\" ) ) ; <S2SV_StartBug> run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a%2fb\" ) , CONST_STR_LEN ( \"/a/b\" ) ) ; <S2SV_EndBug> run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a%2Fb\" ) , CONST_STR_LEN ( \"/a/b\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a%2fb?c=/\" ) , CONST_STR_LEN ( \"/a/b?c=/\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a%2fb?c=%2f\" ) , CONST_STR_LEN ( \"/a/b?c=/\" ) ) ; flags &= ~ HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_DECODE ; flags |= HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_REJECT ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a%2fb\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a%2Fb\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b?c=%2f\" ) , CONST_STR_LEN ( \"/a/b?c=/\" ) ) ; flags &= ~ HTTP_PARSEOPT_URL_NORMALIZE_PATH_2F_REJECT ; flags |= HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REMOVE ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"./a/b\" ) , CONST_STR_LEN ( \"/a/b\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"../a/b\" ) , CONST_STR_LEN ( \"/a/b\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/./b\" ) , CONST_STR_LEN ( \"/a/b\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/../b\" ) , CONST_STR_LEN ( \"/b\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b/.\" ) , CONST_STR_LEN ( \"/a/b/\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b/..\" ) , CONST_STR_LEN ( \"/a/\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/../b/..\" ) , CONST_STR_LEN ( \"/\" ) ) ; flags &= ~ HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REMOVE ; flags |= HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REJECT ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"./a/b\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"../a/b\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/./b\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/../b\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b/.\" ) , \"\" , ( size_t ) - 2 ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b/..\" ) , \"\" , ( size_t ) - 2 ) ; flags &= ~ HTTP_PARSEOPT_URL_NORMALIZE_PATH_DOTSEG_REJECT ; flags |= HTTP_PARSEOPT_URL_NORMALIZE_QUERY_20_PLUS ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b?c=d+e\" ) , CONST_STR_LEN ( \"/a/b?c=d+e\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/a/b?c=d%20e\" ) , CONST_STR_LEN ( \"/a/b?c=d+e\" ) ) ; flags &= ~ HTTP_PARSEOPT_URL_NORMALIZE_QUERY_20_PLUS ; buffer_free ( psrc ) ; buffer_free ( ptmp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , CONST_STR_LEN ( \"%2f?\" ) , CONST_STR_LEN ( \"/?\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN ( \"/%2f?\" ) , CONST_STR_LEN ( \"//?\" ) ) ; run_burl_normalize ( psrc , ptmp , flags , __LINE__ , CONST_STR_LEN (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 static Bool FFD_CanHandleURL ( GF_InputService * plug , const char * url ) { Bool has_audio , has_video ; s32 i ; AVFormatContext * ctx ; AVOutputFormat * fmt_out ; Bool ret = GF_FALSE ; <S2SV_StartBug> char * ext , szName [ 1000 ] , szExt [ 20 ] ; <S2SV_EndBug> const char * szExtList ; FFDemux * ffd ; if ( ! plug || ! url ) return GF_FALSE ; if ( ! strnicmp ( url , \"rtsp://\" , 7 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"rtspu://\" , 8 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"rtp://\" , 6 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"plato://\" , 8 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"udp://\" , 6 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"tcp://\" , 6 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"data:\" , 5 ) ) return GF_FALSE ; ffd = ( FFDemux * ) plug -> priv ; <S2SV_StartBug> strcpy ( szName , url ) ; <S2SV_EndBug> ext = strrchr ( szName , '#' ) ; if ( ext ) ext [ 0 ] = 0 ; ext = strrchr ( szName , '?' ) ; if ( ext ) ext [ 0 ] = 0 ; ext = strrchr ( szName , '.' ) ; if ( ext && strlen ( ext ) > 19 ) ext = NULL ; <S2SV_StartBug> if ( ext && strlen ( ext ) > 1 ) { <S2SV_EndBug> strcpy ( szExt , & ext [ 1 ] ) ; strlwr ( szExt ) ; # ifndef FFMPEG_DEMUX_ENABLE_MPEG2TS if ( strstr ( \"ts<S2SV_blank>m2t<S2SV_blank>mts<S2SV_blank>dmb<S2SV_blank>trp\" , szExt ) ) return GF_FALSE ; # endif if ( ! strcmp ( szExt , \"mp4\" ) || ! strcmp ( szExt , \"mpg4\" ) || ! strcmp ( szExt , \"m4a\" ) || ! strcmp ( szExt , \"m21\" ) || ! strcmp ( szExt , \"m4v\" ) || ! strcmp ( szExt , \"m4a\" ) || ! strcmp ( szExt , \"m4s\" ) || ! strcmp ( szExt , \"3gs\" ) || ! strcmp ( szExt , \"3gp\" ) || ! strcmp ( szExt , \"3gpp\" ) || ! strcmp ( szExt , \"3gp2\" ) || ! strcmp ( szExt , \"3g2\" ) || ! strcmp ( szExt , \"mp3\" ) || ! strcmp ( szExt , \"ac3\" ) || ! strcmp ( szExt , \"amr\" ) || ! strcmp ( szExt , \"bt\" ) || ! strcmp ( szExt , \"wrl\" ) || ! strcmp ( szExt , \"x3dv\" ) || ! strcmp ( szExt , \"xmt\" ) || ! strcmp ( szExt , \"xmta\" ) || ! strcmp ( szExt , \"x3d\" ) || ! strcmp ( szExt , \"jpg\" ) || ! strcmp ( szExt , \"jpeg\" ) || ! strcmp ( szExt , \"png\" ) ) return GF_FALSE ; { u32 i ; for ( i = 0 ; FFD_MIME_TYPES [ i ] ; i += 3 ) { if ( gf_service_check_mime_register ( plug , FFD_MIME_TYPES [ i ] , FFD_MIME_TYPES [ i + 1 ] , FFD_MIME_TYPES [ i + 2 ] , ext ) ) return GF_TRUE ; } } } ffd_parse_options ( ffd , url ) ; ctx = NULL ; if ( open_file ( & ctx , szName , NULL , ffd -> options ? & ffd -> options : NULL ) < 0 ) { AVInputFormat * av_in = NULL ; if ( ext && ! strcmp ( szExt , \"cmp\" ) ) av_in = av_find_input_format ( \"m4v\" ) ; if ( open_file ( & ctx , szName , av_in , ffd -> options ? & ffd -> options : NULL ) < 0 ) { return GF_FALSE ; } } if ( ! ctx ) goto exit ; if ( av_find_stream_info ( ctx ) < 0 ) goto exit ; has_video = has_audio = GF_FALSE ; for ( i = 0 ; i < ( s32 ) ctx -> nb_streams ; i ++ ) { AVCodecContext * enc = ctx -> streams [ i ] -> codec ; switch ( enc -> codec_type ) { case AVMEDIA_TYPE_AUDIO : if ( ! has_audio ) has_audio = GF_TRUE ; break ; case AVMEDIA_TYPE_VIDEO : if ( ! has_video ) has_video = GF_TRUE ; break ; default : break ; } } if ( ! has_audio && ! has_video ) goto exit ; ret = GF_TRUE ; # if ( ( LIBAVFORMAT_VERSION_MAJOR == 52 ) && ( LIBAVFORMAT_VERSION_MINOR <= 47 ) ) || ( LIBAVFORMAT_VERSION_MAJOR < 52 ) fmt_out = guess_stream_format ( NULL , url , NULL ) ; # else fmt_out = av_guess_format ( NULL , url , NULL ) ; # endif if ( fmt_out ) gf_service_register_mime ( plug , fmt_out -> mime_type , fmt_out -> extensions , fmt_out -> name ) ; else { ext = strrchr ( szName , '.' ) ; if ( ext ) { strcpy ( szExt , & ext [ 1 ] ) ; strlwr ( szExt ) ; szExtList = gf_modules_get_option ( ( GF_BaseInterface * ) plug , \"MimeTypes\" , \"application/x-ffmpeg\" ) ; if ( ! szExtList ) { gf_service_register_mime ( plug , \"application/x-ffmpeg\" , szExt , \"Other<S2SV_blank>Movies<S2SV_blank>(FFMPEG)\" ) ; } else if ( ! strstr ( szExtList , szExt ) ) { u32 len ; char * buf ; len = ( u32 ) ( strlen ( szExtList ) + strlen ( szExt ) + 10 ) ; buf = ( char * ) gf_malloc ( sizeof ( char ) * len ) ; sprintf ( buf , \"\\\\\"%s<S2SV_blank>\" , szExt ) ; strcat ( buf , & szExtList [ 1 ] ) ; gf_modules_set_option ( ( GF_BaseInterface * ) plug , \"MimeTypes\" , \"application/x-ffmpeg\" , buf ) ; gf_free ( buf ) ; } } } exit : # if FF_API_CLOSE_INPUT_FILE if ( ctx ) av_close_input_file ( ctx ) ; # else if ( ctx ) avformat_close_input ( & ctx ) ; # endif return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , szName [ 1024 <S2SV_ModEnd> ] , szExt <S2SV_ModStart> -> priv ; if ( strlen ( url ) >= sizeof ( szName ) ) return GF_FALSE ; <S2SV_ModStart> ) > 1 && strlen ( ext ) <= sizeof ( szExt )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><infile><S2SV_blank><outfile><S2SV_blank><N-M|N/M>\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void <S2SV_StartBug> l2tp_msgtype_print ( netdissect_options * ndo , const u_char * dat ) <S2SV_EndBug> { <S2SV_StartBug> const uint16_t * ptr = ( const uint16_t * ) dat ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , tok2str ( l2tp_msgtype2str , \"MSGTYPE-#%u\" , EXTRACT_16BITS ( ptr ) ) ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_char * dat , u_int length <S2SV_ModStart> ) dat ; if ( length < 2 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3905\n\n```\nCWE-119 static int check_line_charstring ( void ) { char * p = line ; <S2SV_StartBug> while ( isspace ( * p ) ) <S2SV_EndBug> p ++ ; return ( * p == '/' || ( p [ 0 ] == 'd' && p [ 1 ] == 'u' && p [ 2 ] == 'p' ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( isspace ( ( unsigned char )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7495\n\n```\nCWE-200 static int ext4_write_end ( struct file * file , struct address_space * mapping , loff_t pos , unsigned len , unsigned copied , struct page * page , void * fsdata ) { handle_t * handle = ext4_journal_current_handle ( ) ; struct inode * inode = mapping -> host ; loff_t old_size = inode -> i_size ; int ret = 0 , ret2 ; int i_size_changed = 0 ; trace_ext4_write_end ( inode , pos , len , copied ) ; <S2SV_StartBug> if ( ext4_test_inode_state ( inode , EXT4_STATE_ORDERED_MODE ) ) { <S2SV_EndBug> ret = ext4_jbd2_file_inode ( handle , inode ) ; if ( ret ) { unlock_page ( page ) ; put_page ( page ) ; goto errout ; } } if ( ext4_has_inline_data ( inode ) ) { ret = ext4_write_inline_data_end ( inode , pos , len , copied , page ) ; if ( ret < 0 ) goto errout ; copied = ret ; } else copied = block_write_end ( file , mapping , pos , len , copied , page , fsdata ) ; i_size_changed = ext4_update_inode_size ( inode , pos + copied ) ; unlock_page ( page ) ; put_page ( page ) ; if ( old_size < pos ) pagecache_isize_extended ( inode , old_size , pos ) ; if ( i_size_changed ) ext4_mark_inode_dirty ( handle , inode ) ; if ( pos + len > inode -> i_size && ext4_can_truncate ( inode ) ) ext4_orphan_add ( handle , inode ) ; errout : ret2 = ext4_journal_stop ( handle ) ; if ( ! ret ) ret = ret2 ; if ( pos + len > inode -> i_size ) { ext4_truncate_failed_write ( inode ) ; if ( inode -> i_nlink ) ext4_orphan_del ( NULL , inode ) ; } return ret ? ret : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> ext4_has_inline_data ( inode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15785\n\n```\nCWE-119 static void GTextFieldSave ( GTextField * gt , int utf8 ) { unichar_t * ret ; char * cret ; FILE * file ; unichar_t * pt ; if ( _ggadget_use_gettext ) { char * temp = GWidgetOpenFile8 ( _ ( \"Save\" ) , NULL , \"*.{txt,py}\" , NULL , NULL ) ; ret = utf82u_copy ( temp ) ; free ( temp ) ; } else ret = GWidgetSaveAsFile ( GStringGetResource ( _STR_Save , NULL ) , NULL , txt , NULL , NULL ) ; if ( ret == NULL ) return ; cret = u2def_copy ( ret ) ; free ( ret ) ; file = fopen ( cret , \"w\" ) ; if ( file == NULL ) { if ( _ggadget_use_gettext ) GWidgetError8 ( _ ( \"Could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>file\" ) , _ ( \"Could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>%.100s\" ) , cret ) ; else GWidgetError ( errort , error , cret ) ; free ( cret ) ; return ; } free ( cret ) ; if ( utf8 ) { putc ( 0xef , file ) ; putc ( 0xbb , file ) ; putc ( 0xbf , file ) ; for ( pt = gt -> text ; * pt ; ++ pt ) { if ( * pt < 0x80 ) putc ( * pt , file ) ; else if ( * pt < 0x800 ) { putc ( 0xc0 | ( * pt >> 6 ) , file ) ; putc ( 0x80 | ( * pt & 0x3f ) , file ) ; } else if ( * pt >= 0xd800 && * pt < 0xdc00 && pt [ 1 ] >= 0xdc00 && pt [ 1 ] < 0xe000 ) { int u = ( ( * pt >> 6 ) & 0xf ) + 1 , y = ( ( * pt & 3 ) << 4 ) | ( ( pt [ 1 ] >> 6 ) & 0xf ) ; putc ( 0xf0 | ( u >> 2 ) , file ) ; putc ( 0x80 | ( ( u & 3 ) << 4 ) | ( ( * pt >> 2 ) & 0xf ) , file ) ; putc ( 0x80 | y , file ) ; putc ( 0x80 | ( pt [ 1 ] & 0x3f ) , file ) ; } else { putc ( 0xe0 | ( * pt >> 12 ) , file ) ; putc ( 0x80 | ( ( * pt >> 6 ) & 0x3f ) , file ) ; putc ( 0x80 | ( * pt & 0x3f ) , file ) ; } } } else { putc ( 0xfeff >> 8 , file ) ; putc ( 0xfeff & 0xff , file ) ; for ( pt = gt -> text ; * pt ; ++ pt ) { putc ( * pt >> 8 , file ) ; putc ( * pt & 0xff , file ) ; } } fclose ( file ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> file ) ; GTextFieldSaved ( gt ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9895\n\n```\nCWE-200 static long __media_device_enum_links ( struct media_device * mdev , struct media_links_enum * links ) { struct media_entity * entity ; entity = find_entity ( mdev , links -> entity ) ; if ( entity == NULL ) return - EINVAL ; if ( links -> pads ) { unsigned int p ; for ( p = 0 ; p < entity -> num_pads ; p ++ ) { struct media_pad_desc pad ; <S2SV_StartBug> media_device_kpad_to_upad ( & entity -> pads [ p ] , & pad ) ; <S2SV_EndBug> if ( copy_to_user ( & links -> pads [ p ] , & pad , sizeof ( pad ) ) ) return - EFAULT ; } } if ( links -> links ) { struct media_link_desc __user * ulink ; unsigned int l ; for ( l = 0 , ulink = links -> links ; l < entity -> num_links ; l ++ ) { struct media_link_desc link ; if ( entity -> links [ l ] . source -> entity != entity ) continue ; <S2SV_StartBug> media_device_kpad_to_upad ( entity -> links [ l ] . source , <S2SV_EndBug> & link . source ) ; media_device_kpad_to_upad ( entity -> links [ l ] . sink , & link . sink ) ; link . flags = entity -> links [ l ] . flags ; if ( copy_to_user ( ulink , & link , sizeof ( * ulink ) ) ) return - EFAULT ; ulink ++ ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> media_pad_desc pad ; memset ( & pad , 0 , sizeof ( pad ) ) ; <S2SV_ModStart> ) continue ; memset ( & link , 0 , sizeof ( link ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 <S2SV_StartBug> static struct ip_options * tcp_v4_save_options ( struct sock * sk , <S2SV_EndBug> struct sk_buff * skb ) { <S2SV_StartBug> struct ip_options * opt = & ( IPCB ( skb ) -> opt ) ; <S2SV_EndBug> <S2SV_StartBug> struct ip_options * dopt = NULL ; <S2SV_EndBug> if ( opt && opt -> optlen ) { <S2SV_StartBug> int opt_size = optlength ( opt ) ; <S2SV_EndBug> dopt = kmalloc ( opt_size , GFP_ATOMIC ) ; if ( dopt ) { <S2SV_StartBug> if ( ip_options_echo ( dopt , skb ) ) { <S2SV_EndBug> kfree ( dopt ) ; dopt = NULL ; } } } return dopt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static struct ip_options_rcu <S2SV_ModEnd> * tcp_v4_save_options ( <S2SV_ModStart> skb ) { const <S2SV_ModStart> ) ; struct ip_options_rcu <S2SV_ModEnd> * dopt = <S2SV_ModStart> int opt_size = sizeof ( * dopt ) + opt -> optlen <S2SV_ModEnd> ; dopt = <S2SV_ModStart> ( ip_options_echo ( & dopt -> opt <S2SV_ModEnd> , skb )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 static int replace_map_fd_with_map_ptr ( struct verifier_env * env ) { struct bpf_insn * insn = env -> prog -> insnsi ; int insn_cnt = env -> prog -> len ; int i , j ; for ( i = 0 ; i < insn_cnt ; i ++ , insn ++ ) { if ( BPF_CLASS ( insn -> code ) == BPF_LDX && ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> imm != 0 ) ) { verbose ( \"BPF_LDX<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( BPF_CLASS ( insn -> code ) == BPF_STX && ( ( BPF_MODE ( insn -> code ) != BPF_MEM && BPF_MODE ( insn -> code ) != BPF_XADD ) || insn -> imm != 0 ) ) { verbose ( \"BPF_STX<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( insn [ 0 ] . code == ( BPF_LD | BPF_IMM | BPF_DW ) ) { struct bpf_map * map ; struct fd f ; if ( i == insn_cnt - 1 || insn [ 1 ] . code != 0 || insn [ 1 ] . dst_reg != 0 || insn [ 1 ] . src_reg != 0 || insn [ 1 ] . off != 0 ) { verbose ( \"invalid<S2SV_blank>bpf_ld_imm64<S2SV_blank>insn\\\\n\" ) ; return - EINVAL ; } if ( insn -> src_reg == 0 ) goto next_insn ; if ( insn -> src_reg != BPF_PSEUDO_MAP_FD ) { verbose ( \"unrecognized<S2SV_blank>bpf_ld_imm64<S2SV_blank>insn\\\\n\" ) ; return - EINVAL ; } f = fdget ( insn -> imm ) ; map = __bpf_map_get ( f ) ; if ( IS_ERR ( map ) ) { verbose ( \"fd<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>not<S2SV_blank>pointing<S2SV_blank>to<S2SV_blank>valid<S2SV_blank>bpf_map\\\\n\" , insn -> imm ) ; return PTR_ERR ( map ) ; } insn [ 0 ] . imm = ( u32 ) ( unsigned long ) map ; insn [ 1 ] . imm = ( ( u64 ) ( unsigned long ) map ) >> 32 ; for ( j = 0 ; j < env -> used_map_cnt ; j ++ ) if ( env -> used_maps [ j ] == map ) { fdput ( f ) ; goto next_insn ; } if ( env -> used_map_cnt >= MAX_USED_MAPS ) { fdput ( f ) ; return - E2BIG ; } <S2SV_StartBug> env -> used_maps [ env -> used_map_cnt ++ ] = map ; <S2SV_EndBug> <S2SV_StartBug> bpf_map_inc ( map , false ) ; <S2SV_EndBug> fdput ( f ) ; next_insn : insn ++ ; i ++ ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> E2BIG ; } map = bpf_map_inc ( map , false ) ; if ( IS_ERR ( map ) ) { fdput ( f ) ; return PTR_ERR ( map ) ; } <S2SV_ModStart> = map ; <S2SV_ModEnd> fdput ( f\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3412\n\n```\nCWE-189 static int efx_probe_all ( struct efx_nic * efx ) { int rc ; rc = efx_probe_nic ( efx ) ; if ( rc ) { netif_err ( efx , probe , efx -> net_dev , \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>NIC\\\\n\" ) ; goto fail1 ; } rc = efx_probe_port ( efx ) ; if ( rc ) { netif_err ( efx , probe , efx -> net_dev , \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>port\\\\n\" ) ; goto fail2 ; } <S2SV_StartBug> efx -> rxq_entries = efx -> txq_entries = EFX_DEFAULT_DMAQ_SIZE ; <S2SV_EndBug> rc = efx_probe_channels ( efx ) ; if ( rc ) goto fail3 ; rc = efx_probe_filters ( efx ) ; if ( rc ) { netif_err ( efx , probe , efx -> net_dev , \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>filter<S2SV_blank>tables\\\\n\" ) ; goto fail4 ; } return 0 ; fail4 : efx_remove_channels ( efx ) ; fail3 : efx_remove_port ( efx ) ; fail2 : efx_remove_nic ( efx ) ; fail1 : return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fail2 ; } BUILD_BUG_ON ( EFX_DEFAULT_DMAQ_SIZE < EFX_RXQ_MIN_ENT ) ; if ( WARN_ON ( EFX_DEFAULT_DMAQ_SIZE < EFX_TXQ_MIN_ENT ( efx ) ) ) { rc = - EINVAL ; goto fail3 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4804\n\n```\nCWE-119 void read_boot ( DOS_FS * fs ) { struct boot_sector b ; unsigned total_sectors ; unsigned short logical_sector_size , sectors ; <S2SV_StartBug> unsigned fat_length ; <S2SV_EndBug> unsigned total_fat_entries ; off_t data_size ; fs_read ( 0 , sizeof ( b ) , & b ) ; logical_sector_size = GET_UNALIGNED_W ( b . sector_size ) ; if ( ! logical_sector_size ) die ( \"Logical<S2SV_blank>sector<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero.\" ) ; if ( logical_sector_size & ( SECTOR_SIZE - 1 ) ) die ( \"Logical<S2SV_blank>sector<S2SV_blank>size<S2SV_blank>(%d<S2SV_blank>bytes)<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>the<S2SV_blank>physical<S2SV_blank>\" \"sector<S2SV_blank>size.\" , logical_sector_size ) ; fs -> cluster_size = b . cluster_size * logical_sector_size ; if ( ! fs -> cluster_size ) die ( \"Cluster<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero.\" ) ; if ( b . fats != 2 && b . fats != 1 ) die ( \"Currently,<S2SV_blank>only<S2SV_blank>1<S2SV_blank>or<S2SV_blank>2<S2SV_blank>FATs<S2SV_blank>are<S2SV_blank>supported,<S2SV_blank>not<S2SV_blank>%d.\\\\n\" , b . fats ) ; fs -> nfats = b . fats ; sectors = GET_UNALIGNED_W ( b . sectors ) ; total_sectors = sectors ? sectors : le32toh ( b . total_sect ) ; if ( verbose ) printf ( \"Checking<S2SV_blank>we<S2SV_blank>can<S2SV_blank>access<S2SV_blank>the<S2SV_blank>last<S2SV_blank>sector<S2SV_blank>of<S2SV_blank>the<S2SV_blank>filesystem\\\\n\" ) ; fs_test ( ( off_t ) ( ( total_sectors & ~ 1 ) - 1 ) * logical_sector_size , logical_sector_size ) ; fat_length = le16toh ( b . fat_length ) ? le16toh ( b . fat_length ) : le32toh ( b . fat32_length ) ; <S2SV_StartBug> fs -> fat_start = ( off_t ) le16toh ( b . reserved ) * logical_sector_size ; <S2SV_EndBug> fs -> root_start = ( ( off_t ) le16toh ( b . reserved ) + b . fats * fat_length ) * logical_sector_size ; fs -> root_entries = GET_UNALIGNED_W ( b . dir_entries ) ; fs -> data_start = fs -> root_start + ROUND_TO_MULTIPLE ( fs -> root_entries << MSDOS_DIR_BITS , logical_sector_size ) ; <S2SV_StartBug> data_size = ( off_t ) total_sectors * logical_sector_size - fs -> data_start ; <S2SV_EndBug> fs -> data_clusters = data_size / fs -> cluster_size ; fs -> root_cluster = 0 ; fs -> fsinfo_start = 0 ; fs -> free_clusters = - 1 ; if ( ! b . fat_length && b . fat32_length ) { fs -> fat_bits = 32 ; fs -> root_cluster = le32toh ( b . root_cluster ) ; if ( ! fs -> root_cluster && fs -> root_entries ) printf ( \"Warning:<S2SV_blank>FAT32<S2SV_blank>root<S2SV_blank>dir<S2SV_blank>not<S2SV_blank>in<S2SV_blank>cluster<S2SV_blank>chain!<S2SV_blank>\" \"Compatibility<S2SV_blank>mode...\\\\n\" ) ; else if ( ! fs -> root_cluster && ! fs -> root_entries ) die ( \"No<S2SV_blank>root<S2SV_blank>directory!\" ) ; else if ( fs -> root_cluster && fs -> root_entries ) printf ( \"Warning:<S2SV_blank>FAT32<S2SV_blank>root<S2SV_blank>dir<S2SV_blank>is<S2SV_blank>in<S2SV_blank>a<S2SV_blank>cluster<S2SV_blank>chain,<S2SV_blank>but<S2SV_blank>\" \"a<S2SV_blank>separate<S2SV_blank>root<S2SV_blank>dir\\\\n\" \"<S2SV_blank><S2SV_blank>area<S2SV_blank>is<S2SV_blank>defined.<S2SV_blank>Cannot<S2SV_blank>fix<S2SV_blank>this<S2SV_blank>easily.\\\\n\" ) ; if ( fs -> data_clusters < FAT16_THRESHOLD ) printf ( \"Warning:<S2SV_blank>Filesystem<S2SV_blank>is<S2SV_blank>FAT32<S2SV_blank>according<S2SV_blank>to<S2SV_blank>fat_length<S2SV_blank>\" \"and<S2SV_blank>fat32_length<S2SV_blank>fields,\\\\n\" \"<S2SV_blank><S2SV_blank>but<S2SV_blank>has<S2SV_blank>only<S2SV_blank>%lu<S2SV_blank>clusters,<S2SV_blank>less<S2SV_blank>than<S2SV_blank>the<S2SV_blank>required<S2SV_blank>\" \"minimum<S2SV_blank>of<S2SV_blank>%d.\\\\n\" \"<S2SV_blank><S2SV_blank>This<S2SV_blank>may<S2SV_blank>lead<S2SV_blank>to<S2SV_blank>problems<S2SV_blank>on<S2SV_blank>some<S2SV_blank>systems.\\\\n\" , ( unsigned long ) fs -> data_clusters , FAT16_THRESHOLD ) ; check_fat_state_bit ( fs , & b ) ; fs -> backupboot_start = le16toh ( b . backup_boot ) * logical_sector_size ; check_backup_boot ( fs , & b , logical_sector_size ) ; read_fsinfo ( fs , & b , logical_sector_size ) ; } else if ( ! atari_format ) { fs -> fat_bits = ( fs -> data_clusters >= FAT12_THRESHOLD ) ? 16 : 12 ; if ( fs -> data_clusters >= FAT16_THRESHOLD ) die ( \"Too<S2SV_blank>many<S2SV_blank>clusters<S2SV_blank>(%lu)<S2SV_blank>for<S2SV_blank>FAT16<S2SV_blank>filesystem.\" , fs -> data_clusters ) ; check_fat_state_bit ( fs , & b ) ; } else { fs -> fat_bits = 16 ; if ( fs -> data_clusters + 2 > fat_length * logical_sector_size * 8 / 16 || ( total_sectors == 720 || total_sectors == 1440 || total_sectors == 2880 ) ) fs -> fat_bits = 12 ; } fs -> eff_fat_bits = ( fs -> fat_bits == 32 ) ? 28 : fs -> fat_bits ; fs -> fat_size = fat_length * logical_sector_size ; fs -> label = calloc ( 12 , sizeof ( uint8_t ) ) ; if ( fs -> fat_bits == 12 || fs -> fat_bits == 16 ) { struct boot_sector_16 * b16 = ( struct boot_sector_16 * ) & b ; if ( b16 -> extended_sig == 0x29 ) memmove ( fs -> label , b16 -> label , 11 ) ; else fs -> label = NULL ; } else if ( fs -> fat_bits == 32 ) { if ( b . extended_sig == 0x29 ) memmove ( fs -> label , & b . label , 11 ) ; else fs -> label = NULL ; } total_fat_entries = ( uint64_t ) fs -> fat_size * 8 / fs -> fat_bits ; if ( fs -> data_clusters > total_fat_entries - 2 ) die ( \"Filesystem<S2SV_blank>has<S2SV_blank>%u<S2SV_blank>clusters<S2SV_blank>but<S2SV_blank>only<S2SV_blank>space<S2SV_blank>for<S2SV_blank>%u<S2SV_blank>FAT<S2SV_blank>entries.\" , fs -> data_clusters , total_fat_entries - 2 ) ; if ( ! fs -> root_entries && ! fs -> root_cluster ) die ( \"Root<S2SV_blank>directory<S2SV_blank>has<S2SV_blank>zero<S2SV_blank>size.\" ) ; if ( fs -> root_entries & ( MSDOS_DPS - 1 ) ) die ( \"Root<S2SV_blank>directory<S2SV_blank>(%d<S2SV_blank>entries)<S2SV_blank>doesn\\'t<S2SV_blank>span<S2SV_blank>an<S2SV_blank>integral<S2SV_blank>number<S2SV_blank>of<S2SV_blank>\" \"sectors.\" , fs -> root_entries ) ; if ( logical_sector_size & ( SECTOR_SIZE - 1 ) ) die ( \"Logical<S2SV_blank>sector<S2SV_blank>size<S2SV_blank>(%d<S2SV_blank>bytes)<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>the<S2SV_blank>physical<S2SV_blank>\" \"sector<S2SV_blank>size.\" , logical_sector_size ) ; # if 0 if ( ! atari_format && ( ! b . secs_track || ! b . heads ) ) die ( \"Invalid<S2SV_blank>disk<S2SV_blank>format<S2SV_blank>in<S2SV_blank>boot<S2SV_blank>sector.\" ) ; # endif if ( verbose ) dump_boot ( fs , & b , logical_sector_size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , sectors ; off_t <S2SV_ModEnd> fat_length ; unsigned <S2SV_ModStart> fat32_length ) ; if ( ! fat_length ) die ( \"FAT<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero.\" ) ; <S2SV_ModStart> fs -> data_start ; if ( data_size < fs -> cluster_size ) die ( \"Filesystem<S2SV_blank>has<S2SV_blank>no<S2SV_blank>space<S2SV_blank>for<S2SV_blank>any<S2SV_blank>data<S2SV_blank>clusters\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6536\n\n```\nCWE-200 static int xfrm_alloc_replay_state_esn ( struct xfrm_replay_state_esn * * replay_esn , struct xfrm_replay_state_esn * * preplay_esn , struct nlattr * rta ) { struct xfrm_replay_state_esn * p , * pp , * up ; <S2SV_StartBug> if ( ! rta ) <S2SV_EndBug> return 0 ; up = nla_data ( rta ) ; <S2SV_StartBug> p = kmemdup ( up , xfrm_replay_state_esn_len ( up ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! p ) return - ENOMEM ; <S2SV_StartBug> pp = kmemdup ( up , xfrm_replay_state_esn_len ( up ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! pp ) { kfree ( p ) ; return - ENOMEM ; } <S2SV_StartBug> * replay_esn = p ; <S2SV_EndBug> * preplay_esn = pp ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * up ; int klen , ulen ; <S2SV_ModStart> rta ) ; klen = <S2SV_ModEnd> xfrm_replay_state_esn_len ( up <S2SV_ModStart> ( up ) ; ulen = nla_len ( rta ) >= klen ? klen : sizeof ( * up ) ; p = kzalloc ( klen <S2SV_ModStart> ; pp = kzalloc ( klen <S2SV_ModEnd> , GFP_KERNEL ) <S2SV_ModStart> ENOMEM ; } memcpy ( p , up , ulen ) ; memcpy ( pp , up , ulen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 void jiffies_to_timeval ( const unsigned long jiffies , struct timeval * value ) { <S2SV_StartBug> u64 nsec = ( u64 ) jiffies * TICK_NSEC ; <S2SV_EndBug> long tv_usec ; <S2SV_StartBug> value -> tv_sec = div_long_long_rem ( nsec , NSEC_PER_SEC , & tv_usec ) ; <S2SV_EndBug> tv_usec /= NSEC_PER_USEC ; <S2SV_StartBug> value -> tv_usec = tv_usec ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) { u32 rem ; value -> tv_sec = div_u64_rem ( <S2SV_ModEnd> ( u64 ) <S2SV_ModStart> jiffies * TICK_NSEC , <S2SV_ModEnd> NSEC_PER_SEC , & <S2SV_ModStart> NSEC_PER_SEC , & rem ) <S2SV_ModEnd> ; value -> <S2SV_ModStart> -> tv_usec = rem / NSEC_PER_USEC <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13035\n\n```\nCWE-125 static char * isis_print_id ( const uint8_t * cp , int id_len ) { int i ; static char id [ sizeof ( \"xxxx.xxxx.xxxx.yy-zz\" ) ] ; char * pos = id ; <S2SV_StartBug> for ( i = 1 ; i <= SYSTEM_ID_LEN ; i ++ ) { <S2SV_EndBug> snprintf ( pos , sizeof ( id ) - ( pos - id ) , \"%02x\" , * cp ++ ) ; pos += strlen ( pos ) ; if ( i == 2 || i == 4 ) * pos ++ = '.' ; } if ( id_len >= NODE_ID_LEN ) { snprintf ( pos , sizeof ( id ) - ( pos - id ) , \".%02x\" , * cp ++ ) ; pos += strlen ( pos ) ; } if ( id_len == LSP_ID_LEN ) snprintf ( pos , sizeof ( id ) - ( pos - id ) , \"-%02x\" , * cp ) ; return ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = id ; int sysid_len ; sysid_len = SYSTEM_ID_LEN ; if ( sysid_len > id_len ) sysid_len = id_len ; <S2SV_ModStart> ; i <= sysid_len <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13217\n\n```\nCWE-119 static float * get_window ( vorb * f , int len ) { len <<= 1 ; if ( len == f -> blocksize_0 ) return f -> window [ 0 ] ; if ( len == f -> blocksize_1 ) return f -> window [ 1 ] ; <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ] ; <S2SV_ModEnd> return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-787 void mp_encode_lua_table_as_map ( lua_State * L , mp_buf * buf , int level ) { <S2SV_StartBug> size_t len = 0 ; <S2SV_EndBug> lua_pushnil ( L ) ; while ( lua_next ( L , - 2 ) ) { lua_pop ( L , 1 ) ; len ++ ; } mp_encode_map ( L , buf , len ) ; lua_pushnil ( L ) ; while ( lua_next ( L , - 2 ) ) { lua_pushvalue ( L , - 2 ) ; mp_encode_lua_type ( L , buf , level + 1 ) ; mp_encode_lua_type ( L , buf , level + 1 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = 0 ; luaL_checkstack ( L , 3 , \"in<S2SV_blank>function<S2SV_blank>mp_encode_lua_table_as_map\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 void cipso_v4_sock_delattr ( struct sock * sk ) { int hdr_delta ; <S2SV_StartBug> struct ip_options * opt ; <S2SV_EndBug> struct inet_sock * sk_inet ; sk_inet = inet_sk ( sk ) ; <S2SV_StartBug> opt = sk_inet -> opt ; <S2SV_EndBug> <S2SV_StartBug> if ( opt == NULL || opt -> cipso == 0 ) <S2SV_EndBug> return ; <S2SV_StartBug> hdr_delta = cipso_v4_delopt ( & sk_inet -> opt ) ; <S2SV_EndBug> if ( sk_inet -> is_icsk && hdr_delta > 0 ) { struct inet_connection_sock * sk_conn = inet_csk ( sk ) ; sk_conn -> icsk_ext_hdr_len -= hdr_delta ; sk_conn -> icsk_sync_mss ( sk , sk_conn -> icsk_pmtu_cookie ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> hdr_delta ; struct ip_options_rcu <S2SV_ModEnd> * opt ; <S2SV_ModStart> ; opt = rcu_dereference_protected ( sk_inet -> inet_opt , 1 ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> || opt -> opt . <S2SV_ModStart> & sk_inet -> inet_opt <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9217\n\n```\nCWE-20 int dns_packet_is_reply_for ( DnsPacket * p , const DnsResourceKey * key ) { int r ; assert ( p ) ; assert ( key ) ; if ( DNS_PACKET_QR ( p ) != 1 ) return 0 ; r = dns_packet_extract ( p ) ; if ( r < 0 ) return r ; <S2SV_StartBug> if ( p -> question -> n_keys != 1 ) <S2SV_EndBug> return 0 ; return dns_resource_key_equal ( p -> question -> keys [ 0 ] , key ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! p -> question ) return 0 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2546\n\n```\nCWE-362 static int snd_timer_user_release ( struct inode * inode , struct file * file ) { struct snd_timer_user * tu ; if ( file -> private_data ) { tu = file -> private_data ; file -> private_data = NULL ; <S2SV_StartBug> if ( tu -> timeri ) <S2SV_EndBug> <S2SV_StartBug> snd_timer_close ( tu -> timeri ) ; <S2SV_EndBug> kfree ( tu -> queue ) ; kfree ( tu -> tqueue ) ; kfree ( tu ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; mutex_lock ( & tu -> ioctl_lock ) ; <S2SV_ModStart> tu -> timeri ) ; mutex_unlock ( & tu -> ioctl_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6711\n\n```\nCWE-20 static vpx_codec_err_t vp8_peek_si_internal ( const uint8_t * data , unsigned int data_sz , vpx_codec_stream_info_t * si , vpx_decrypt_cb decrypt_cb , void * decrypt_state ) { vpx_codec_err_t res = VPX_CODEC_OK ; if ( data + data_sz <= data ) { res = VPX_CODEC_INVALID_PARAM ; } else { uint8_t clear_buffer [ 10 ] ; const uint8_t * clear = data ; if ( decrypt_cb ) { int n = MIN ( sizeof ( clear_buffer ) , data_sz ) ; decrypt_cb ( decrypt_state , data , clear_buffer , n ) ; clear = clear_buffer ; } si -> is_kf = 0 ; if ( data_sz >= 10 && ! ( clear [ 0 ] & 0x01 ) ) { si -> is_kf = 1 ; if ( clear [ 3 ] != 0x9d || clear [ 4 ] != 0x01 || clear [ 5 ] != 0x2a ) return VPX_CODEC_UNSUP_BITSTREAM ; si -> w = ( clear [ 6 ] | ( clear [ 7 ] << 8 ) ) & 0x3fff ; si -> h = ( clear [ 8 ] | ( clear [ 9 ] << 8 ) ) & 0x3fff ; <S2SV_StartBug> if ( ! ( si -> h | si -> w ) ) <S2SV_EndBug> <S2SV_StartBug> res = VPX_CODEC_UNSUP_BITSTREAM ; <S2SV_EndBug> } <S2SV_StartBug> else <S2SV_EndBug> { res = VPX_CODEC_UNSUP_BITSTREAM ; } } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> si -> h && <S2SV_ModEnd> si -> w <S2SV_ModStart> ) res = VPX_CODEC_CORRUPT_FRAME ; } else { res = <S2SV_ModStart> VPX_CODEC_UNSUP_BITSTREAM ; } <S2SV_ModEnd> } return res\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5224\n\n```\nCWE-000 <S2SV_StartBug> int xmkstemp ( char * * tmpname , char * dir ) <S2SV_EndBug> { char * localtmp ; <S2SV_StartBug> char * tmpenv ; <S2SV_EndBug> mode_t old_mode ; int fd , rc ; <S2SV_StartBug> if ( dir != NULL ) <S2SV_EndBug> <S2SV_StartBug> tmpenv = dir ; <S2SV_EndBug> else tmpenv = getenv ( \"TMPDIR\" ) ; <S2SV_StartBug> if ( tmpenv ) <S2SV_EndBug> rc = asprintf ( & localtmp , \"%s/%s.XXXXXX\" , tmpenv , <S2SV_StartBug> program_invocation_short_name ) ; <S2SV_EndBug> else rc = asprintf ( & localtmp , \"%s/%s.XXXXXX\" , _PATH_TMP , program_invocation_short_name ) ; if ( rc < 0 ) return - 1 ; old_mode = umask ( 077 ) ; fd = mkostemp ( localtmp , O_RDWR | O_CREAT | O_EXCL | O_CLOEXEC ) ; umask ( old_mode ) ; if ( fd == - 1 ) { free ( localtmp ) ; localtmp = NULL ; } * tmpname = localtmp ; return fd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tmpname , const <S2SV_ModStart> char * dir , const char * prefix <S2SV_ModStart> * localtmp ; const <S2SV_ModStart> , rc ; <S2SV_ModEnd> tmpenv = dir <S2SV_ModStart> tmpenv = dir ? dir : <S2SV_ModEnd> getenv ( \"TMPDIR\" <S2SV_ModStart> ; if ( ! tmpenv ) tmpenv = _PATH_TMP ; <S2SV_ModEnd> rc = asprintf <S2SV_ModStart> , tmpenv , prefix <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3571\n\n```\nCWE-000 int ssl3_read_n ( SSL * s , int n , int max , int extend ) { int i , len , left ; long align = 0 ; unsigned char * pkt ; SSL3_BUFFER * rb ; if ( n <= 0 ) return n ; rb = & ( s -> s3 -> rbuf ) ; if ( rb -> buf == NULL ) if ( ! ssl3_setup_read_buffer ( s ) ) return - 1 ; left = rb -> left ; # if defined ( SSL3_ALIGN_PAYLOAD ) && SSL3_ALIGN_PAYLOAD != 0 align = ( long ) rb -> buf + SSL3_RT_HEADER_LENGTH ; align = ( - align ) & ( SSL3_ALIGN_PAYLOAD - 1 ) ; # endif if ( ! extend ) { if ( left == 0 ) rb -> offset = align ; else if ( align != 0 && left >= SSL3_RT_HEADER_LENGTH ) { pkt = rb -> buf + rb -> offset ; if ( pkt [ 0 ] == SSL3_RT_APPLICATION_DATA && ( pkt [ 3 ] << 8 | pkt [ 4 ] ) >= 128 ) { memmove ( rb -> buf + align , pkt , left ) ; rb -> offset = align ; } } s -> packet = rb -> buf + rb -> offset ; s -> packet_length = 0 ; } if ( SSL_IS_DTLS ( s ) ) { <S2SV_StartBug> if ( left > 0 && n > left ) <S2SV_EndBug> n = left ; } if ( left >= n ) { s -> packet_length += n ; rb -> left = left - n ; rb -> offset += n ; return ( n ) ; } len = s -> packet_length ; pkt = rb -> buf + align ; if ( s -> packet != pkt ) { memmove ( pkt , s -> packet , len + left ) ; s -> packet = pkt ; rb -> offset = len + align ; } if ( n > ( int ) ( rb -> len - rb -> offset ) ) { SSLerr ( SSL_F_SSL3_READ_N , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } if ( ! s -> read_ahead ) max = n ; else { if ( max < n ) max = n ; if ( max > ( int ) ( rb -> len - rb -> offset ) ) max = rb -> len - rb -> offset ; } while ( left < n ) { clear_sys_error ( ) ; if ( s -> rbio != NULL ) { s -> rwstate = SSL_READING ; i = BIO_read ( s -> rbio , pkt + len + left , max - left ) ; } else { SSLerr ( SSL_F_SSL3_READ_N , SSL_R_READ_BIO_NOT_SET ) ; i = - 1 ; } if ( i <= 0 ) { rb -> left = left ; if ( s -> mode & SSL_MODE_RELEASE_BUFFERS && ! SSL_IS_DTLS ( s ) ) if ( len + left == 0 ) ssl3_release_read_buffer ( s ) ; return ( i ) ; } left += i ; if ( SSL_IS_DTLS ( s ) ) { if ( n > left ) n = left ; } } rb -> offset += n ; rb -> left = left - n ; s -> packet_length += n ; s -> rwstate = SSL_NOTHING ; return ( n ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( left == 0 && extend ) return 0 ; if ( left\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20892\n\n```\nCWE-415 static struct usmStateReference * usm_malloc_usmStateReference ( void ) { <S2SV_StartBug> struct usmStateReference * retval = ( struct usmStateReference * ) <S2SV_EndBug> calloc ( 1 , sizeof ( struct usmStateReference ) ) ; <S2SV_StartBug> return retval ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> usmStateReference * retval ; retval = <S2SV_ModEnd> calloc ( 1 <S2SV_ModStart> ) ) ; if ( retval ) retval -> refcnt = 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int inv_recenter_nonneg ( int v , int m ) { if ( v > 2 * m ) return v ; <S2SV_StartBug> return v % 2 ? m - ( v + 1 ) / 2 : m + v / 2 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> v ; return ( v & 1 ) <S2SV_ModEnd> ? m - <S2SV_ModStart> ? m - ( <S2SV_ModStart> + 1 ) >> 1 ) <S2SV_ModEnd> : m + <S2SV_ModStart> : m + ( v >> 1 ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int atalk_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { <S2SV_StartBug> struct sock * sk = sock -> sk ; <S2SV_EndBug> struct sockaddr_at * sat = ( struct sockaddr_at * ) msg -> msg_name ; struct ddpehdr * ddp ; int copied = 0 ; int offset = 0 ; int err = 0 ; struct sk_buff * skb ; skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & err ) ; lock_sock ( sk ) ; if ( ! skb ) goto out ; ddp = ddp_hdr ( skb ) ; copied = ntohs ( ddp -> deh_len_hops ) & 1023 ; if ( sk -> sk_type != SOCK_RAW ) { offset = sizeof ( * ddp ) ; copied -= offset ; } if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } err = skb_copy_datagram_iovec ( skb , offset , msg -> msg_iov , copied ) ; <S2SV_StartBug> if ( ! err ) { <S2SV_EndBug> if ( sat ) { sat -> sat_family = AF_APPLETALK ; sat -> sat_port = ddp -> deh_sport ; sat -> sat_addr . s_node = ddp -> deh_snode ; sat -> sat_addr . s_net = ddp -> deh_snet ; <S2SV_StartBug> } <S2SV_EndBug> msg -> msg_namelen = sizeof ( * sat ) ; } skb_free_datagram ( sk , skb ) ; out : release_sock ( sk ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock -> sk <S2SV_ModEnd> ; struct ddpehdr <S2SV_ModStart> ( ! err && msg -> msg_name ) { struct sockaddr_at * sat = msg -> msg_name ; <S2SV_ModEnd> sat -> sat_family <S2SV_ModStart> -> deh_snet ; <S2SV_ModEnd> msg -> msg_namelen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13029\n\n```\nCWE-125 static int print_ccp_config_options ( netdissect_options * ndo , const u_char * p , int length ) { int len , opt ; if ( length < 2 ) return 0 ; ND_TCHECK2 ( * p , 2 ) ; len = p [ 1 ] ; opt = p [ 0 ] ; if ( length < len ) return 0 ; if ( len < 2 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>2)\" , tok2str ( ccpconfopts_values , \"Unknown\" , opt ) , opt , len ) ) ; return 0 ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( ccpconfopts_values , \"Unknown\" , opt ) , opt , len ) ) ; switch ( opt ) { case CCPOPT_BSDCOMP : if ( len < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>3)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 1 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>Version:<S2SV_blank>%u,<S2SV_blank>Dictionary<S2SV_blank>Bits:<S2SV_blank>%u\" , p [ 2 ] >> 5 , p [ 2 ] & 0x1f ) ) ; break ; case CCPOPT_MVRCA : if ( len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 1 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>Features:<S2SV_blank>%u,<S2SV_blank>PxP:<S2SV_blank>%s,<S2SV_blank>History:<S2SV_blank>%u,<S2SV_blank>#CTX-ID:<S2SV_blank>%u\" , ( p [ 2 ] & 0xc0 ) >> 6 , ( p [ 2 ] & 0x20 ) ? \"Enabled\" : \"Disabled\" , p [ 2 ] & 0x1f , p [ 3 ] ) ) ; break ; case CCPOPT_DEFLATE : if ( len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 1 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>Window:<S2SV_blank>%uK,<S2SV_blank>Method:<S2SV_blank>%s<S2SV_blank>(0x%x),<S2SV_blank>MBZ:<S2SV_blank>%u,<S2SV_blank>CHK:<S2SV_blank>%u\" , ( p [ 2 ] & 0xf0 ) >> 4 , ( ( p [ 2 ] & 0x0f ) == 8 ) ? \"zlib\" : \"unknown\" , p [ 2 ] & 0x0f , ( p [ 3 ] & 0xfc ) >> 2 , p [ 3 ] & 0x03 ) ) ; break ; # if 0 case CCPOPT_OUI : case CCPOPT_PRED1 : case CCPOPT_PRED2 : case CCPOPT_PJUMP : case CCPOPT_HPPPC : case CCPOPT_STACLZS : case CCPOPT_MPPC : case CCPOPT_GFZA : case CCPOPT_V42BIS : case CCPOPT_LZSDCP : case CCPOPT_DEC : case CCPOPT_RESV : break ; # endif default : if ( ndo -> ndo_vflag < 2 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; return len ; trunc : ND_PRINT ( ( ndo , \"[|ccp]\" ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ; } ND_TCHECK ( p [ 2 ] <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> len ; } ND_TCHECK ( p [ 3 ] <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> len ; } ND_TCHECK ( p [ 3 ] <S2SV_ModEnd> ) ; ND_PRINT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 stmt_ty FunctionDef ( identifier name , arguments_ty args , asdl_seq * body , asdl_seq * <S2SV_StartBug> decorator_list , expr_ty returns , int lineno , int col_offset , int <S2SV_EndBug> end_lineno , int end_col_offset , PyArena * arena ) { stmt_ty p ; if ( ! name ) { PyErr_SetString ( PyExc_ValueError , \"field<S2SV_blank>name<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>FunctionDef\" ) ; return NULL ; } if ( ! args ) { PyErr_SetString ( PyExc_ValueError , \"field<S2SV_blank>args<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>FunctionDef\" ) ; return NULL ; } p = ( stmt_ty ) PyArena_Malloc ( arena , sizeof ( * p ) ) ; if ( ! p ) return NULL ; p -> kind = FunctionDef_kind ; p -> v . FunctionDef . name = name ; p -> v . FunctionDef . args = args ; p -> v . FunctionDef . body = body ; p -> v . FunctionDef . decorator_list = decorator_list ; <S2SV_StartBug> p -> v . FunctionDef . returns = returns ; <S2SV_EndBug> p -> lineno = lineno ; p -> col_offset = col_offset ; p -> end_lineno = end_lineno ; p -> end_col_offset = end_col_offset ; return p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> expr_ty returns , string type_comment , <S2SV_ModStart> returns = returns ; p -> v . FunctionDef . type_comment = type_comment\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9016\n\n```\nCWE-264 struct request * blk_mq_tag_to_rq ( struct blk_mq_tags * tags , unsigned int tag ) { <S2SV_StartBug> struct request * rq = tags -> rqs [ tag ] ; <S2SV_EndBug> <S2SV_StartBug> struct blk_flush_queue * fq = blk_get_flush_queue ( rq -> q , rq -> mq_ctx ) ; <S2SV_EndBug> if ( ! is_flush_request ( rq , fq , tag ) ) return rq ; return fq -> flush_rq ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tag ) { return <S2SV_ModEnd> tags -> rqs <S2SV_ModStart> tag ] ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-88(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17456\n\n```\nCWE-88 static int fsck_gitmodules_fn ( const char * var , const char * value , void * vdata ) { struct fsck_gitmodules_data * data = vdata ; const char * subsection , * key ; int subsection_len ; char * name ; if ( parse_config_key ( var , \"submodule\" , & subsection , & subsection_len , & key ) < 0 || ! subsection ) return 0 ; name = xmemdupz ( subsection , subsection_len ) ; if ( check_submodule_name ( name ) < 0 ) data -> ret |= report ( data -> options , data -> obj , FSCK_MSG_GITMODULES_NAME , \"disallowed<S2SV_blank>submodule<S2SV_blank>name:<S2SV_blank>%s\" , name ) ; <S2SV_StartBug> free ( name ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> name ) ; if ( ! strcmp ( key , \"url\" ) && value && looks_like_command_line_option ( value ) ) data -> ret |= report ( data -> options , data -> obj , FSCK_MSG_GITMODULES_URL , \"disallowed<S2SV_blank>submodule<S2SV_blank>url:<S2SV_blank>%s\" , value ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void read_ref_frames ( VP9_COMMON * const cm , MACROBLOCKD * const xd , <S2SV_StartBug> vp9_reader * r , <S2SV_EndBug> int segment_id , MV_REFERENCE_FRAME ref_frame [ 2 ] ) { <S2SV_StartBug> FRAME_CONTEXT * const fc = & cm -> fc ; <S2SV_EndBug> FRAME_COUNTS * const counts = & cm -> counts ; if ( vp9_segfeature_active ( & cm -> seg , segment_id , SEG_LVL_REF_FRAME ) ) { <S2SV_StartBug> ref_frame [ 0 ] = ( MV_REFERENCE_FRAME ) vp9_get_segdata ( & cm -> seg , segment_id , <S2SV_EndBug> SEG_LVL_REF_FRAME ) ; ref_frame [ 1 ] = NONE ; } else { const REFERENCE_MODE mode = read_block_reference_mode ( cm , xd , r ) ; if ( mode == COMPOUND_REFERENCE ) { const int idx = cm -> ref_frame_sign_bias [ cm -> comp_fixed_ref ] ; const int ctx = vp9_get_pred_context_comp_ref_p ( cm , xd ) ; <S2SV_StartBug> const int bit = vp9_read ( r , fc -> comp_ref_prob [ ctx ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! cm -> frame_parallel_decoding_mode ) <S2SV_EndBug> ++ counts -> comp_ref [ ctx ] [ bit ] ; ref_frame [ idx ] = cm -> comp_fixed_ref ; ref_frame [ ! idx ] = cm -> comp_var_ref [ bit ] ; } else if ( mode == SINGLE_REFERENCE ) { const int ctx0 = vp9_get_pred_context_single_ref_p1 ( xd ) ; <S2SV_StartBug> const int bit0 = vp9_read ( r , fc -> single_ref_prob [ ctx0 ] [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! cm -> frame_parallel_decoding_mode ) <S2SV_EndBug> ++ counts -> single_ref [ ctx0 ] [ 0 ] [ bit0 ] ; if ( bit0 ) { const int ctx1 = vp9_get_pred_context_single_ref_p2 ( xd ) ; <S2SV_StartBug> const int bit1 = vp9_read ( r , fc -> single_ref_prob [ ctx1 ] [ 1 ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! cm -> frame_parallel_decoding_mode ) <S2SV_EndBug> ++ counts -> single_ref [ ctx1 ] [ 1 ] [ bit1 ] ; ref_frame [ 0 ] = bit1 ? ALTREF_FRAME : GOLDEN_FRAME ; } else { ref_frame [ 0 ] = LAST_FRAME ; } ref_frame [ 1 ] = NONE ; } else { assert ( 0 && \"Invalid<S2SV_blank>prediction<S2SV_blank>mode.\" ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const xd , vpx_reader <S2SV_ModEnd> * r , <S2SV_ModStart> const fc = cm -> fc ; FRAME_COUNTS * counts = xd -> counts ; if ( segfeature_active ( <S2SV_ModStart> & cm -> <S2SV_ModEnd> seg , segment_id <S2SV_ModStart> ( MV_REFERENCE_FRAME ) get_segdata <S2SV_ModEnd> ( & cm <S2SV_ModStart> int bit = vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> ; if ( counts <S2SV_ModEnd> ) ++ counts <S2SV_ModStart> int bit0 = vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> ; if ( counts <S2SV_ModEnd> ) ++ counts <S2SV_ModStart> int bit1 = vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> ; if ( counts <S2SV_ModEnd> ) ++ counts\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-494(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13083\n\n```\nCWE-494 const char * WinPKIErrorString ( void ) { static char error_string [ 64 ] ; DWORD error_code = GetLastError ( ) ; <S2SV_StartBug> if ( ( error_code >> 16 ) != 0x8009 ) <S2SV_EndBug> return WindowsErrorString ( ) ; switch ( error_code ) { case NTE_BAD_UID : return \"Bad<S2SV_blank>UID.\" ; case CRYPT_E_MSG_ERROR : return \"An<S2SV_blank>error<S2SV_blank>occurred<S2SV_blank>while<S2SV_blank>performing<S2SV_blank>an<S2SV_blank>operation<S2SV_blank>on<S2SV_blank>a<S2SV_blank>cryptographic<S2SV_blank>message.\" ; case CRYPT_E_UNKNOWN_ALGO : return \"Unknown<S2SV_blank>cryptographic<S2SV_blank>algorithm.\" ; case CRYPT_E_INVALID_MSG_TYPE : return \"Invalid<S2SV_blank>cryptographic<S2SV_blank>message<S2SV_blank>type.\" ; case CRYPT_E_HASH_VALUE : return \"The<S2SV_blank>hash<S2SV_blank>value<S2SV_blank>is<S2SV_blank>not<S2SV_blank>correct\" ; case CRYPT_E_ISSUER_SERIALNUMBER : return \"Invalid<S2SV_blank>issuer<S2SV_blank>and/or<S2SV_blank>serial<S2SV_blank>number.\" ; case CRYPT_E_BAD_LEN : return \"The<S2SV_blank>length<S2SV_blank>specified<S2SV_blank>for<S2SV_blank>the<S2SV_blank>output<S2SV_blank>data<S2SV_blank>was<S2SV_blank>insufficient.\" ; case CRYPT_E_BAD_ENCODE : return \"An<S2SV_blank>error<S2SV_blank>occurred<S2SV_blank>during<S2SV_blank>encode<S2SV_blank>or<S2SV_blank>decode<S2SV_blank>operation.\" ; case CRYPT_E_FILE_ERROR : return \"An<S2SV_blank>error<S2SV_blank>occurred<S2SV_blank>while<S2SV_blank>reading<S2SV_blank>or<S2SV_blank>writing<S2SV_blank>to<S2SV_blank>a<S2SV_blank>file.\" ; case CRYPT_E_NOT_FOUND : return \"Cannot<S2SV_blank>find<S2SV_blank>object<S2SV_blank>or<S2SV_blank>property.\" ; case CRYPT_E_EXISTS : return \"The<S2SV_blank>object<S2SV_blank>or<S2SV_blank>property<S2SV_blank>already<S2SV_blank>exists.\" ; case CRYPT_E_NO_PROVIDER : return \"No<S2SV_blank>provider<S2SV_blank>was<S2SV_blank>specified<S2SV_blank>for<S2SV_blank>the<S2SV_blank>store<S2SV_blank>or<S2SV_blank>object.\" ; case CRYPT_E_DELETED_PREV : return \"The<S2SV_blank>previous<S2SV_blank>certificate<S2SV_blank>or<S2SV_blank>CRL<S2SV_blank>context<S2SV_blank>was<S2SV_blank>deleted.\" ; case CRYPT_E_NO_MATCH : return \"Cannot<S2SV_blank>find<S2SV_blank>the<S2SV_blank>requested<S2SV_blank>object.\" ; case CRYPT_E_UNEXPECTED_MSG_TYPE : case CRYPT_E_NO_KEY_PROPERTY : case CRYPT_E_NO_DECRYPT_CERT : return \"Private<S2SV_blank>key<S2SV_blank>or<S2SV_blank>certificate<S2SV_blank>issue\" ; case CRYPT_E_BAD_MSG : return \"Not<S2SV_blank>a<S2SV_blank>cryptographic<S2SV_blank>message.\" ; case CRYPT_E_NO_SIGNER : return \"The<S2SV_blank>signed<S2SV_blank>cryptographic<S2SV_blank>message<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>a<S2SV_blank>signer<S2SV_blank>for<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>signer<S2SV_blank>index.\" ; case CRYPT_E_REVOKED : return \"The<S2SV_blank>certificate<S2SV_blank>is<S2SV_blank>revoked.\" ; case CRYPT_E_NO_REVOCATION_DLL : case CRYPT_E_NO_REVOCATION_CHECK : case CRYPT_E_REVOCATION_OFFLINE : case CRYPT_E_NOT_IN_REVOCATION_DATABASE : return \"Cannot<S2SV_blank>check<S2SV_blank>certificate<S2SV_blank>revocation.\" ; case CRYPT_E_INVALID_NUMERIC_STRING : case CRYPT_E_INVALID_PRINTABLE_STRING : case CRYPT_E_INVALID_IA5_STRING : case CRYPT_E_INVALID_X500_STRING : case CRYPT_E_NOT_CHAR_STRING : return \"Invalid<S2SV_blank>string.\" ; case CRYPT_E_SECURITY_SETTINGS : return \"The<S2SV_blank>cryptographic<S2SV_blank>operation<S2SV_blank>failed<S2SV_blank>due<S2SV_blank>to<S2SV_blank>a<S2SV_blank>local<S2SV_blank>security<S2SV_blank>option<S2SV_blank>setting.\" ; case CRYPT_E_NO_VERIFY_USAGE_CHECK : case CRYPT_E_VERIFY_USAGE_OFFLINE : return \"Cannot<S2SV_blank>complete<S2SV_blank>usage<S2SV_blank>check.\" ; case CRYPT_E_NO_TRUSTED_SIGNER : <S2SV_StartBug> return \"None<S2SV_blank>of<S2SV_blank>the<S2SV_blank>signers<S2SV_blank>of<S2SV_blank>the<S2SV_blank>cryptographic<S2SV_blank>message<S2SV_blank>or<S2SV_blank>certificate<S2SV_blank>trust<S2SV_blank>list<S2SV_blank>is<S2SV_blank>trusted.\" ; <S2SV_EndBug> default : static_sprintf ( error_string , \"Unknown<S2SV_blank>PKI<S2SV_blank>error<S2SV_blank>0x%08lX\" , error_code ) ; return error_string ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( ( <S2SV_ModStart> != 0x8009 ) && ( ( error_code >> 16 ) != 0x800B ) ) <S2SV_ModStart> : return \"None<S2SV_blank>of<S2SV_blank>the<S2SV_blank>signers<S2SV_blank>of<S2SV_blank>the<S2SV_blank>cryptographic<S2SV_blank>message<S2SV_blank>or<S2SV_blank>certificate<S2SV_blank>trust<S2SV_blank>list<S2SV_blank>is<S2SV_blank>trusted.\" ; case CERT_E_UNTRUSTEDROOT : return \"The<S2SV_blank>root<S2SV_blank>certificate<S2SV_blank>is<S2SV_blank>not<S2SV_blank>trusted.\" ; case TRUST_E_NOSIGNATURE : return \"Not<S2SV_blank>digitally<S2SV_blank>signed.\" ; case TRUST_E_EXPLICIT_DISTRUST : return \"One<S2SV_blank>of<S2SV_blank>the<S2SV_blank>certificates<S2SV_blank>used<S2SV_blank>was<S2SV_blank>marked<S2SV_blank>as<S2SV_blank>untrusted<S2SV_blank>by<S2SV_blank>the<S2SV_blank>user.\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5354\n\n```\nCWE-000 krb5_error_code krb5_ldap_put_principal ( krb5_context context , krb5_db_entry * entry , char * * db_args ) { int l = 0 , kerberos_principal_object_type = 0 ; unsigned int ntrees = 0 , tre = 0 ; krb5_error_code st = 0 , tempst = 0 ; LDAP * ld = NULL ; LDAPMessage * result = NULL , * ent = NULL ; char * * subtreelist = NULL ; char * user = NULL , * subtree = NULL , * principal_dn = NULL ; char * * values = NULL , * strval [ 10 ] = { NULL } , errbuf [ 1024 ] ; char * filtuser = NULL ; struct berval * * bersecretkey = NULL ; LDAPMod * * mods = NULL ; krb5_boolean create_standalone_prinicipal = FALSE ; krb5_boolean krb_identity_exists = FALSE , establish_links = FALSE ; char * standalone_principal_dn = NULL ; krb5_tl_data * tl_data = NULL ; krb5_key_data * * keys = NULL ; kdb5_dal_handle * dal_handle = NULL ; krb5_ldap_context * ldap_context = NULL ; krb5_ldap_server_handle * ldap_server_handle = NULL ; osa_princ_ent_rec princ_ent = { 0 } ; xargs_t xargs = { 0 } ; char * polname = NULL ; OPERATION optype ; krb5_boolean found_entry = FALSE ; krb5_clear_error_message ( context ) ; SETUP_CONTEXT ( ) ; if ( ldap_context -> lrparams == NULL || ldap_context -> container_dn == NULL ) return EINVAL ; GET_HANDLE ( ) ; if ( ! is_principal_in_realm ( ldap_context , entry -> princ ) ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"Principal<S2SV_blank>does<S2SV_blank>not<S2SV_blank>belong<S2SV_blank>to<S2SV_blank>the<S2SV_blank>default<S2SV_blank>realm\" ) ) ; goto cleanup ; } if ( ( ( st = krb5_unparse_name ( context , entry -> princ , & user ) ) != 0 ) || ( ( st = krb5_ldap_unparse_principal_name ( user ) ) != 0 ) ) goto cleanup ; filtuser = ldap_filter_correct ( user ) ; if ( filtuser == NULL ) { st = ENOMEM ; goto cleanup ; } if ( entry -> mask & KADM5_PRINCIPAL ) optype = ADD_PRINCIPAL ; else optype = MODIFY_PRINCIPAL ; if ( ( ( st = krb5_get_princ_type ( context , entry , & kerberos_principal_object_type ) ) != 0 ) || ( ( st = krb5_get_userdn ( context , entry , & principal_dn ) ) != 0 ) ) goto cleanup ; if ( ( st = process_db_args ( context , db_args , & xargs , optype ) ) != 0 ) goto cleanup ; if ( entry -> mask & KADM5_LOAD ) { unsigned int tree = 0 ; int numlentries = 0 ; char * filter = NULL ; if ( asprintf ( & filter , FILTER \"%s))\" , filtuser ) < 0 ) { filter = NULL ; st = ENOMEM ; goto cleanup ; } if ( ( st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ) != 0 ) goto cleanup ; found_entry = FALSE ; for ( tree = 0 ; found_entry == FALSE && tree < ntrees ; ++ tree ) { if ( principal_dn == NULL ) { LDAP_SEARCH_1 ( subtreelist [ tree ] , ldap_context -> lrparams -> search_scope , filter , principal_attributes , IGNORE_STATUS ) ; } else { LDAP_SEARCH_1 ( principal_dn , LDAP_SCOPE_BASE , filter , principal_attributes , IGNORE_STATUS ) ; } if ( st == LDAP_SUCCESS ) { numlentries = ldap_count_entries ( ld , result ) ; if ( numlentries > 1 ) { free ( filter ) ; st = EINVAL ; k5_setmsg ( context , st , _ ( \"operation<S2SV_blank>can<S2SV_blank>not<S2SV_blank>continue,<S2SV_blank>more<S2SV_blank>than<S2SV_blank>one<S2SV_blank>\" \"entry<S2SV_blank>with<S2SV_blank>principal<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>found\" ) , user ) ; goto cleanup ; } else if ( numlentries == 1 ) { found_entry = TRUE ; if ( principal_dn == NULL ) { ent = ldap_first_entry ( ld , result ) ; if ( ent != NULL ) { if ( ( principal_dn = ldap_get_dn ( ld , ent ) ) == NULL ) { ldap_get_option ( ld , LDAP_OPT_RESULT_CODE , & st ) ; st = set_ldap_error ( context , st , 0 ) ; free ( filter ) ; goto cleanup ; } } } } } else if ( st != LDAP_NO_SUCH_OBJECT ) { st = set_ldap_error ( context , st , 0 ) ; free ( filter ) ; goto cleanup ; } ldap_msgfree ( result ) ; result = NULL ; } free ( filter ) ; if ( found_entry == FALSE && principal_dn != NULL ) { create_standalone_prinicipal = TRUE ; standalone_principal_dn = strdup ( principal_dn ) ; CHECK_NULL ( standalone_principal_dn ) ; } } if ( principal_dn == NULL && xargs . dn == NULL ) { if ( entry -> princ -> length == 2 && entry -> princ -> data [ 0 ] . length == strlen ( \"krbtgt\" ) && strncmp ( entry -> princ -> data [ 0 ] . data , \"krbtgt\" , entry -> princ -> data [ 0 ] . length ) == 0 ) { subtree = strdup ( ldap_context -> lrparams -> realmdn ) ; } else if ( xargs . containerdn ) { if ( ( st = checkattributevalue ( ld , xargs . containerdn , NULL , NULL , NULL ) ) != 0 ) { if ( st == KRB5_KDB_NOENTRY || st == KRB5_KDB_CONSTRAINT_VIOLATION ) { int ost = st ; st = EINVAL ; k5_prependmsg ( context , ost , st , _ ( \"\\'%s\\'<S2SV_blank>not<S2SV_blank>found\" ) , xargs . containerdn ) ; } goto cleanup ; } subtree = strdup ( xargs . containerdn ) ; } else if ( ldap_context -> lrparams -> containerref && strlen ( ldap_context -> lrparams -> containerref ) != 0 ) { subtree = strdup ( ldap_context -> lrparams -> containerref ) ; } else { subtree = strdup ( ldap_context -> lrparams -> realmdn ) ; } CHECK_NULL ( subtree ) ; if ( asprintf ( & standalone_principal_dn , \"krbprincipalname=%s,%s\" , filtuser , subtree ) < 0 ) standalone_principal_dn = NULL ; CHECK_NULL ( standalone_principal_dn ) ; create_standalone_prinicipal = TRUE ; free ( subtree ) ; subtree = NULL ; } if ( xargs . dn_from_kbd == TRUE ) { int dnlen = 0 , subtreelen = 0 ; char * dn = NULL ; krb5_boolean outofsubtree = TRUE ; if ( xargs . dn != NULL ) { dn = xargs . dn ; } else if ( xargs . linkdn != NULL ) { dn = xargs . linkdn ; } else if ( standalone_principal_dn != NULL ) { dn = standalone_principal_dn ; } if ( subtreelist == NULL ) { st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ; if ( st ) goto cleanup ; } for ( tre = 0 ; tre < ntrees ; ++ tre ) { if ( subtreelist [ tre ] == NULL || strlen ( subtreelist [ tre ] ) == 0 ) { outofsubtree = FALSE ; break ; } else { dnlen = strlen ( dn ) ; subtreelen = strlen ( subtreelist [ tre ] ) ; if ( ( dnlen >= subtreelen ) && ( strcasecmp ( ( dn + dnlen - subtreelen ) , subtreelist [ tre ] ) == 0 ) ) { outofsubtree = FALSE ; break ; } } } if ( outofsubtree == TRUE ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"DN<S2SV_blank>is<S2SV_blank>out<S2SV_blank>of<S2SV_blank>the<S2SV_blank>realm<S2SV_blank>subtree\" ) ) ; goto cleanup ; } if ( standalone_principal_dn == NULL ) { char * attributes [ ] = { \"krbticketpolicyreference\" , \"krbprincipalname\" , NULL } ; ldap_msgfree ( result ) ; result = NULL ; LDAP_SEARCH_1 ( dn , LDAP_SCOPE_BASE , 0 , attributes , IGNORE_STATUS ) ; if ( st == LDAP_SUCCESS ) { ent = ldap_first_entry ( ld , result ) ; if ( ent != NULL ) { if ( ( values = ldap_get_values ( ld , ent , \"krbticketpolicyreference\" ) ) != NULL ) { ldap_value_free ( values ) ; } if ( ( values = ldap_get_values ( ld , ent , \"krbprincipalname\" ) ) != NULL ) { krb_identity_exists = TRUE ; ldap_value_free ( values ) ; } } } else { st = set_ldap_error ( context , st , OP_SEARCH ) ; goto cleanup ; } } } if ( xargs . dn != NULL && krb_identity_exists == TRUE ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"ldap<S2SV_blank>object<S2SV_blank>is<S2SV_blank>already<S2SV_blank>kerberized\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( xargs . linkdn != NULL ) { if ( optype == MODIFY_PRINCIPAL && kerberos_principal_object_type != KDB_STANDALONE_PRINCIPAL_OBJECT ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"link<S2SV_blank>information<S2SV_blank>can<S2SV_blank>not<S2SV_blank>be<S2SV_blank>set/updated<S2SV_blank>as<S2SV_blank>the<S2SV_blank>\" \"kerberos<S2SV_blank>principal<S2SV_blank>belongs<S2SV_blank>to<S2SV_blank>an<S2SV_blank>ldap<S2SV_blank>object\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } { char * * linkdns = NULL ; int j = 0 ; if ( ( st = krb5_get_linkdn ( context , entry , & linkdns ) ) != 0 ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Failed<S2SV_blank>getting<S2SV_blank>object<S2SV_blank>references\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( linkdns != NULL ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"kerberos<S2SV_blank>principal<S2SV_blank>is<S2SV_blank>already<S2SV_blank>linked<S2SV_blank>to<S2SV_blank>a<S2SV_blank>ldap<S2SV_blank>\" \"object\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; for ( j = 0 ; linkdns [ j ] != NULL ; ++ j ) free ( linkdns [ j ] ) ; free ( linkdns ) ; goto cleanup ; } } establish_links = TRUE ; } if ( entry -> mask & KADM5_LAST_SUCCESS ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> last_success ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastSuccessfulAuth\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_LAST_FAILED ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> last_failed ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastFailedAuth\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_FAIL_AUTH_COUNT ) { krb5_kvno fail_auth_count ; fail_auth_count = entry -> fail_auth_count ; if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) fail_auth_count ++ ; st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_REPLACE , fail_auth_count ) ; if ( st != 0 ) goto cleanup ; } else if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) { int attr_mask = 0 ; krb5_boolean has_fail_count ; st = krb5_get_attributes_mask ( context , entry , & attr_mask ) ; if ( st != 0 ) goto cleanup ; has_fail_count = ( ( attr_mask & KDB_FAIL_AUTH_COUNT_ATTR ) != 0 ) ; # ifdef LDAP_MOD_INCREMENT if ( ldap_server_handle -> server_info -> modify_increment && has_fail_count ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_INCREMENT , 1 ) ; if ( st != 0 ) goto cleanup ; } else { # endif if ( has_fail_count ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_DELETE , entry -> fail_auth_count ) ; if ( st != 0 ) goto cleanup ; } st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_ADD , entry -> fail_auth_count + 1 ) ; if ( st != 0 ) goto cleanup ; # ifdef LDAP_MOD_INCREMENT } # endif } else if ( optype == ADD_PRINCIPAL ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_ADD , 0 ) ; } if ( entry -> mask & KADM5_MAX_LIFE ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbmaxticketlife\" , LDAP_MOD_REPLACE , entry -> max_life ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_MAX_RLIFE ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbmaxrenewableage\" , LDAP_MOD_REPLACE , entry -> max_renewable_life ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_ATTRIBUTES ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbticketflags\" , LDAP_MOD_REPLACE , entry -> attributes ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_PRINCIPAL ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = user ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbprincipalname\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_PRINC_EXPIRE_TIME ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbprincipalexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_PW_EXPIRATION ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> pw_expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpasswordexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_POLICY ) { memset ( & princ_ent , 0 , sizeof ( princ_ent ) ) ; for ( tl_data = entry -> tl_data ; tl_data ; tl_data = tl_data -> tl_data_next ) { if ( tl_data -> tl_data_type == KRB5_TL_KADM_DATA ) { if ( ( st = krb5_lookup_tl_kadm_data ( tl_data , & princ_ent ) ) != 0 ) { goto cleanup ; } break ; } } if ( princ_ent . aux_attributes & KADM5_POLICY ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( st = krb5_ldap_name_to_policydn ( context , princ_ent . policy , & polname ) ) != 0 ) goto cleanup ; strval [ 0 ] = polname ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } else { st = EINVAL ; k5_setmsg ( context , st , \"Password<S2SV_blank>policy<S2SV_blank>value<S2SV_blank>null\" ) ; goto cleanup ; } } else if ( entry -> mask & KADM5_LOAD && found_entry == TRUE ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_REPLACE , NULL ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_POLICY_CLR ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_DELETE , NULL ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_KEY_DATA || entry -> mask & KADM5_KVNO ) { krb5_kvno mkvno ; if ( ( st = krb5_dbe_lookup_mkvno ( context , entry , & mkvno ) ) != 0 ) goto cleanup ; bersecretkey = krb5_encode_krbsecretkey ( entry -> key_data , entry -> n_key_data , mkvno ) ; <S2SV_StartBug> if ( ( st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbprincipalkey\" , <S2SV_EndBug> <S2SV_StartBug> LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , bersecretkey ) ) != 0 ) <S2SV_EndBug> goto cleanup ; if ( ! ( entry -> mask & KADM5_PRINCIPAL ) ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> pw_expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpasswordexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } { krb5_timestamp last_pw_changed ; if ( ( st = krb5_dbe_lookup_last_pwd_change ( context , entry , & last_pw_changed ) ) != 0 ) goto cleanup ; memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( last_pw_changed ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastPwdChange\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } } if ( entry -> tl_data != NULL ) { int count = 0 ; struct berval * * ber_tl_data = NULL ; krb5_tl_data * ptr ; krb5_timestamp unlock_time ; for ( ptr = entry -> tl_data ; ptr != NULL ; ptr = ptr -> tl_data_next ) { if ( ptr -> tl_data_type == KRB5_TL_LAST_PWD_CHANGE # ifdef SECURID || ptr -> tl_data_type == KRB5_TL_DB_ARGS # endif || ptr -> tl_data_type == KRB5_TL_KADM_DATA || ptr -> tl_data_type == KDB_TL_USER_INFO || ptr -> tl_data_type == KRB5_TL_CONSTRAINED_DELEGATION_ACL || ptr -> tl_data_type == KRB5_TL_LAST_ADMIN_UNLOCK ) continue ; count ++ ; } if ( count != 0 ) { int j ; ber_tl_data = ( struct berval * * ) calloc ( count + 1 , sizeof ( struct berval * ) ) ; if ( ber_tl_data == NULL ) { st = ENOMEM ; goto cleanup ; } for ( j = 0 , ptr = entry -> tl_data ; ptr != NULL ; ptr = ptr -> tl_data_next ) { if ( ptr -> tl_data_type == KRB5_TL_LAST_PWD_CHANGE # ifdef SECURID || ptr -> tl_data_type == KRB5_TL_DB_ARGS # endif || ptr -> tl_data_type == KRB5_TL_KADM_DATA || ptr -> tl_data_type == KDB_TL_USER_INFO || ptr -> tl_data_type == KRB5_TL_CONSTRAINED_DELEGATION_ACL || ptr -> tl_data_type == KRB5_TL_LAST_ADMIN_UNLOCK ) continue ; if ( ( st = tl_data2berval ( ptr , & ber_tl_data [ j ] ) ) != 0 ) break ; j ++ ; } if ( st == 0 ) { ber_tl_data [ count ] = NULL ; st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbExtraData\" , LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , ber_tl_data ) ; } for ( j = 0 ; ber_tl_data [ j ] != NULL ; j ++ ) { free ( ber_tl_data [ j ] -> bv_val ) ; free ( ber_tl_data [ j ] ) ; } free ( ber_tl_data ) ; if ( st != 0 ) goto cleanup ; } if ( ( st = krb5_dbe_lookup_last_admin_unlock ( context , entry , & unlock_time ) ) != 0 ) goto cleanup ; if ( unlock_time != 0 ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( unlock_time ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastAdminUnlock\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } } if ( xargs . tktpolicydn != NULL ) { int tmask = 0 ; if ( strlen ( xargs . tktpolicydn ) != 0 ) { st = checkattributevalue ( ld , xargs . tktpolicydn , \"objectclass\" , policyclass , & tmask ) ; CHECK_CLASS_VALIDITY ( st , tmask , _ ( \"ticket<S2SV_blank>policy<S2SV_blank>object<S2SV_blank>value:<S2SV_blank>\" ) ) ; strval [ 0 ] = xargs . tktpolicydn ; strval [ 1 ] = NULL ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbticketpolicyreference\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } else { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbticketpolicyreference\" , LDAP_MOD_DELETE , NULL ) ) != 0 ) goto cleanup ; } } if ( establish_links == TRUE ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = xargs . linkdn ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbObjectReferences\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } if ( mods == NULL ) goto cleanup ; if ( create_standalone_prinicipal == TRUE ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = \"krbprincipal\" ; strval [ 1 ] = \"krbprincipalaux\" ; strval [ 2 ] = \"krbTicketPolicyAux\" ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"objectclass\" , LDAP_MOD_ADD , strval ) ) != 0 ) goto cleanup ; st = ldap_add_ext_s ( ld , standalone_principal_dn , mods , NULL , NULL ) ; if ( st == LDAP_ALREADY_EXISTS && entry -> mask & KADM5_LOAD ) { st = ldap_delete_ext_s ( ld , standalone_principal_dn , NULL , NULL ) ; if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Principal<S2SV_blank>delete<S2SV_blank>failed<S2SV_blank>(trying<S2SV_blank>to<S2SV_blank>replace<S2SV_blank>\" \"entry):<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_ADD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } else { st = ldap_add_ext_s ( ld , standalone_principal_dn , mods , NULL , NULL ) ; } } if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Principal<S2SV_blank>add<S2SV_blank>failed:<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_ADD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } } else { { char * attrvalues [ ] = { \"krbprincipalaux\" , \"krbTicketPolicyAux\" , NULL } ; int p , q , r = 0 , amask = 0 ; if ( ( st = checkattributevalue ( ld , ( xargs . dn ) ? xargs . dn : principal_dn , \"objectclass\" , attrvalues , & amask ) ) != 0 ) goto cleanup ; memset ( strval , 0 , sizeof ( strval ) ) ; for ( p = 1 , q = 0 ; p <= 2 ; p <<= 1 , ++ q ) { if ( ( p & amask ) == 0 ) strval [ r ++ ] = attrvalues [ q ] ; } if ( r != 0 ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"objectclass\" , LDAP_MOD_ADD , strval ) ) != 0 ) goto cleanup ; } } if ( xargs . dn != NULL ) st = ldap_modify_ext_s ( ld , xargs . dn , mods , NULL , NULL ) ; else st = ldap_modify_ext_s ( ld , principal_dn , mods , NULL , NULL ) ; if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"User<S2SV_blank>modification<S2SV_blank>failed:<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_MOD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) entry -> fail_auth_count ++ ; } cleanup : if ( user ) free ( user ) ; if ( filtuser ) free ( filtuser ) ; free_xargs ( xargs ) ; if ( standalone_principal_dn ) free ( standalone_principal_dn ) ; if ( principal_dn ) free ( principal_dn ) ; if ( polname != NULL ) free ( polname ) ; for ( tre = 0 ; tre < ntrees ; tre ++ ) free ( subtreelist [ tre ] ) ; free ( subtreelist ) ; if ( subtree ) free ( subtree ) ; if ( bersecretkey ) { for ( l = 0 ; bersecretkey [ l ] ; ++ l ) { if ( bersecretkey [ l ] -> bv_val ) free ( bersecretkey [ l ] -> bv_val ) ; free ( bersecretkey [ l ] ) ; } free ( bersecretkey ) ; } if ( keys ) free ( keys ) ; ldap_mods_free ( mods , 1 ) ; ldap_osa_free_princ_ent ( & princ_ent ) ; ldap_msgfree ( result ) ; krb5_ldap_put_handle_to_pool ( ldap_context , ldap_server_handle ) ; return ( st ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( bersecretkey == NULL ) { st = ENOMEM ; goto cleanup ; } if ( bersecretkey [ 0 ] != NULL || ! create_standalone_prinicipal ) { <S2SV_ModEnd> st = krb5_add_ber_mem_ldap_mod <S2SV_ModStart> , bersecretkey ) ; if ( st != 0 ) goto cleanup ; } <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18270\n\n```\nCWE-000 int install_user_keyrings ( void ) { struct user_struct * user ; const struct cred * cred ; struct key * uid_keyring , * session_keyring ; key_perm_t user_keyring_perm ; char buf [ 20 ] ; int ret ; uid_t uid ; user_keyring_perm = ( KEY_POS_ALL & ~ KEY_POS_SETATTR ) | KEY_USR_ALL ; cred = current_cred ( ) ; user = cred -> user ; uid = from_kuid ( cred -> user_ns , user -> uid ) ; kenter ( \"%p{%u}\" , user , uid ) ; if ( user -> uid_keyring && user -> session_keyring ) { kleave ( \"<S2SV_blank>=<S2SV_blank>0<S2SV_blank>[exist]\" ) ; return 0 ; } mutex_lock ( & key_user_keyring_mutex ) ; ret = 0 ; if ( ! user -> uid_keyring ) { sprintf ( buf , \"_uid.%u\" , uid ) ; uid_keyring = find_keyring_by_name ( buf , true ) ; if ( IS_ERR ( uid_keyring ) ) { uid_keyring = keyring_alloc ( buf , user -> uid , INVALID_GID , cred , user_keyring_perm , <S2SV_StartBug> KEY_ALLOC_IN_QUOTA , <S2SV_EndBug> NULL , NULL ) ; if ( IS_ERR ( uid_keyring ) ) { ret = PTR_ERR ( uid_keyring ) ; goto error ; } } sprintf ( buf , \"_uid_ses.%u\" , uid ) ; session_keyring = find_keyring_by_name ( buf , true ) ; if ( IS_ERR ( session_keyring ) ) { session_keyring = keyring_alloc ( buf , user -> uid , INVALID_GID , cred , user_keyring_perm , <S2SV_StartBug> KEY_ALLOC_IN_QUOTA , <S2SV_EndBug> NULL , NULL ) ; if ( IS_ERR ( session_keyring ) ) { ret = PTR_ERR ( session_keyring ) ; goto error_release ; } ret = key_link ( session_keyring , uid_keyring ) ; if ( ret < 0 ) goto error_release_both ; } user -> uid_keyring = uid_keyring ; user -> session_keyring = session_keyring ; } mutex_unlock ( & key_user_keyring_mutex ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>0\" ) ; return 0 ; error_release_both : key_put ( session_keyring ) ; error_release : key_put ( uid_keyring ) ; error : mutex_unlock ( & key_user_keyring_mutex ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , user_keyring_perm , KEY_ALLOC_UID_KEYRING | <S2SV_ModStart> , user_keyring_perm , KEY_ALLOC_UID_KEYRING |\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2211\n\n```\nCWE-264 SYSCALL_DEFINE2 ( osf_getdomainname , char __user * , name , int , namelen ) { unsigned len ; int i ; if ( ! access_ok ( VERIFY_WRITE , name , namelen ) ) return - EFAULT ; len = namelen ; <S2SV_StartBug> if ( namelen > 32 ) <S2SV_EndBug> len = 32 ; down_read ( & uts_sem ) ; for ( i = 0 ; i < len ; ++ i ) { __put_user ( utsname ( ) -> domainname [ i ] , name + i ) ; if ( utsname ( ) -> domainname [ i ] == '\\\\0' ) break ; } up_read ( & uts_sem ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( len <S2SV_ModEnd> > 32 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10172\n\n```\nCWE-125 static int read_new_config_info ( WavpackContext * wpc , WavpackMetadata * wpmd ) { int bytecnt = wpmd -> byte_length ; unsigned char * byteptr = wpmd -> data ; wpc -> version_five = 1 ; wpc -> file_format = wpc -> config . qmode = wpc -> channel_layout = 0 ; if ( wpc -> channel_reordering ) { free ( wpc -> channel_reordering ) ; wpc -> channel_reordering = NULL ; } <S2SV_StartBug> if ( bytecnt ) { <S2SV_EndBug> wpc -> file_format = * byteptr ++ ; wpc -> config . qmode = ( wpc -> config . qmode & ~ 0xff ) | * byteptr ++ ; bytecnt -= 2 ; if ( bytecnt ) { int nchans , i ; wpc -> channel_layout = ( int32_t ) * byteptr ++ << 16 ; bytecnt -- ; if ( bytecnt ) { wpc -> channel_layout += nchans = * byteptr ++ ; bytecnt -- ; if ( bytecnt ) { if ( bytecnt > nchans ) return FALSE ; wpc -> channel_reordering = malloc ( nchans ) ; if ( wpc -> channel_reordering ) { for ( i = 0 ; i < nchans ; ++ i ) if ( bytecnt ) { wpc -> channel_reordering [ i ] = * byteptr ++ ; <S2SV_StartBug> bytecnt -- ; <S2SV_EndBug> } else wpc -> channel_reordering [ i ] = i ; } } } else wpc -> channel_layout += wpc -> config . num_channels ; } } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( bytecnt >= 2 <S2SV_ModStart> byteptr ++ ; if ( wpc -> channel_reordering [ i ] >= nchans ) wpc -> channel_reordering [ i ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3905\n\n```\nCWE-119 int main ( int argc , char * argv [ ] ) { int i , c ; FILE * ifp = 0 , * ofp = 0 ; const char * ifp_filename = \"<stdin>\" ; const char * ofp_filename = \"<stdout>\" ; const char * set_font_name = 0 ; struct font_reader fr ; uint32_t rfork_len ; int raw = 0 , macbinary = 1 , applesingle = 0 , appledouble = 0 , binhex = 0 ; Clp_Parser * clp = Clp_NewParser ( argc , ( const char * const * ) argv , sizeof ( options ) / sizeof ( options [ 0 ] ) , options ) ; program_name = Clp_ProgramName ( clp ) ; while ( 1 ) { int opt = Clp_Next ( clp ) ; switch ( opt ) { case RAW_OPT : raw = 1 ; macbinary = applesingle = appledouble = binhex = 0 ; break ; case MACBINARY_OPT : macbinary = 1 ; raw = applesingle = appledouble = binhex = 0 ; break ; case APPLESINGLE_OPT : applesingle = 1 ; raw = macbinary = appledouble = binhex = 0 ; break ; case APPLEDOUBLE_OPT : appledouble = 1 ; raw = macbinary = applesingle = binhex = 0 ; break ; case BINHEX_OPT : binhex = 1 ; raw = macbinary = applesingle = appledouble = 0 ; break ; output_file : case OUTPUT_OPT : if ( ofp ) fatal_error ( \"output<S2SV_blank>file<S2SV_blank>already<S2SV_blank>specified\" ) ; if ( strcmp ( clp -> vstr , \"-\" ) == 0 ) ofp = stdout ; else { ofp_filename = clp -> vstr ; ofp = fopen ( ofp_filename , \"wb\" ) ; if ( ! ofp ) fatal_error ( \"%s:<S2SV_blank>%s\" , ofp_filename , strerror ( errno ) ) ; } break ; case FILENAME_OPT : if ( set_font_name ) fatal_error ( \"Macintosh<S2SV_blank>font<S2SV_blank>filename<S2SV_blank>already<S2SV_blank>specified\" ) ; set_font_name = clp -> vstr ; break ; case HELP_OPT : usage ( ) ; exit ( 0 ) ; break ; case VERSION_OPT : printf ( \"t1mac<S2SV_blank>(LCDF<S2SV_blank>t1utils)<S2SV_blank>%s\\\\n\" , VERSION ) ; <S2SV_StartBug> printf ( \"Copyright<S2SV_blank>(C)<S2SV_blank>2000-2010<S2SV_blank>Eddie<S2SV_blank>Kohler<S2SV_blank>et<S2SV_blank>al.\\\\n\\\\\\n<S2SV_blank>This<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>see<S2SV_blank>the<S2SV_blank>source<S2SV_blank>for<S2SV_blank>copying<S2SV_blank>conditions.\\\\n\\\\\\n<S2SV_blank>There<S2SV_blank>is<S2SV_blank>NO<S2SV_blank>warranty,<S2SV_blank>not<S2SV_blank>even<S2SV_blank>for<S2SV_blank>merchantability<S2SV_blank>or<S2SV_blank>fitness<S2SV_blank>for<S2SV_blank>a\\\\n\\\\\\n<S2SV_blank>particular<S2SV_blank>purpose.\\\\n\" ) ; <S2SV_EndBug> exit ( 0 ) ; break ; case Clp_NotOption : if ( ifp && ofp ) fatal_error ( \"too<S2SV_blank>many<S2SV_blank>arguments\" ) ; else if ( ifp ) goto output_file ; if ( strcmp ( clp -> vstr , \"-\" ) == 0 ) ifp = stdin ; else { ifp_filename = clp -> vstr ; ifp = fopen ( clp -> vstr , \"r\" ) ; if ( ! ifp ) fatal_error ( \"%s:<S2SV_blank>%s\" , clp -> vstr , strerror ( errno ) ) ; } break ; case Clp_Done : goto done ; case Clp_BadOption : short_usage ( ) ; exit ( 1 ) ; break ; } } done : if ( ! ifp ) ifp = stdin ; if ( ! ofp ) ofp = stdout ; # if defined ( _MSDOS ) || defined ( _WIN32 ) _setmode ( _fileno ( ofp ) , _O_BINARY ) ; # endif fr . output_ascii = t1mac_output_ascii ; fr . output_binary = t1mac_output_binary ; fr . output_end = t1mac_output_end ; rfork_f = tmpfile ( ) ; if ( ! rfork_f ) fatal_error ( \"cannot<S2SV_blank>open<S2SV_blank>temorary<S2SV_blank>file:<S2SV_blank>%s\" , strerror ( errno ) ) ; for ( i = 0 ; i < RFORK_HEADERLEN ; i ++ ) putc ( 0 , rfork_f ) ; init_current_post ( ) ; c = getc ( ifp ) ; ungetc ( c , ifp ) ; if ( c == PFB_MARKER ) process_pfb ( ifp , ifp_filename , & fr ) ; else if ( c == '%' ) process_pfa ( ifp , ifp_filename , & fr ) ; else fatal_error ( \"%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>start<S2SV_blank>with<S2SV_blank>font<S2SV_blank>marker<S2SV_blank>(`%%\\'<S2SV_blank>or<S2SV_blank>0x80)\" , ifp_filename ) ; if ( ifp != stdin ) fclose ( ifp ) ; if ( nrsrc == 0 ) error ( \"no<S2SV_blank>POST<S2SV_blank>resources<S2SV_blank>written<S2SV_blank>--<S2SV_blank>are<S2SV_blank>you<S2SV_blank>sure<S2SV_blank>this<S2SV_blank>was<S2SV_blank>a<S2SV_blank>font?\" ) ; output_new_rsrc ( \"ICN#\" , 256 , 32 , ( const char * ) icon_bw_data , 256 ) ; output_new_rsrc ( \"FREF\" , 256 , 32 , \"LWFN\\\\0\\\\0\\\\0\" , 7 ) ; output_new_rsrc ( \"BNDL\" , 256 , 32 , \"T1UT\\\\0\\\\0\\\\0\\\\1FREF\\\\0\\\\0\\\\0\\\\0\\\\1\\\\0ICN#\\\\0\\\\0\\\\0\\\\0\\\\1\\\\0\" , 28 ) ; output_new_rsrc ( \"icl8\" , 256 , 32 , ( const char * ) icon_8_data , 1024 ) ; output_new_rsrc ( \"icl4\" , 256 , 32 , ( const char * ) icon_4_data , 512 ) ; output_new_rsrc ( \"ics#\" , 256 , 32 , ( const char * ) small_icon_bw_data , 64 ) ; output_new_rsrc ( \"ics8\" , 256 , 32 , ( const char * ) small_icon_8_data , 256 ) ; output_new_rsrc ( \"ics4\" , 256 , 32 , ( const char * ) small_icon_4_data , 128 ) ; output_new_rsrc ( \"T1UT\" , 0 , 0 , \"DConverted<S2SV_blank>by<S2SV_blank>t1mac<S2SV_blank>(t1utils)<S2SV_blank>\\\\251Eddie<S2SV_blank>Kohler<S2SV_blank>http://www.lcdf.org/type/\" , 69 ) ; rfork_len = complete_rfork ( ) ; if ( ! set_font_name && font_name ) { int part = 0 , len = 0 ; char * x , * s ; for ( x = s = font_name ; * s ; s ++ ) <S2SV_StartBug> if ( isupper ( * s ) || isdigit ( * s ) ) { <S2SV_EndBug> * x ++ = * s ; part ++ ; len = 1 ; <S2SV_StartBug> } else if ( islower ( * s ) ) { <S2SV_EndBug> if ( len < ( part <= 1 ? 5 : 3 ) ) * x ++ = * s ; len ++ ; } * x ++ = 0 ; set_font_name = font_name ; } else if ( ! set_font_name ) set_font_name = \"Unknown<S2SV_blank>Font\" ; if ( macbinary ) output_macbinary ( rfork_f , rfork_len , set_font_name , ofp ) ; else if ( raw ) output_raw ( rfork_f , rfork_len , ofp ) ; else if ( applesingle || appledouble ) output_applesingle ( rfork_f , rfork_len , set_font_name , ofp , appledouble ) ; else if ( binhex ) output_binhex ( rfork_f , rfork_len , set_font_name , ofp ) ; else fatal_error ( \"strange<S2SV_blank>output<S2SV_blank>format\" ) ; fclose ( rfork_f ) ; if ( ofp != stdout ) fclose ( ofp ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; printf ( \"Copyright<S2SV_blank>(C)<S2SV_blank>2000-2010<S2SV_blank>Eddie<S2SV_blank>Kohler<S2SV_blank>et<S2SV_blank>al.\\\\n\\\\\\nThis<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>see<S2SV_blank>the<S2SV_blank>source<S2SV_blank>for<S2SV_blank>copying<S2SV_blank>conditions.\\\\n\\\\\\nThere<S2SV_blank>is<S2SV_blank>NO<S2SV_blank>warranty,<S2SV_blank>not<S2SV_blank>even<S2SV_blank>for<S2SV_blank>merchantability<S2SV_blank>or<S2SV_blank>fitness<S2SV_blank>for<S2SV_blank>a\\\\n\\\\\\nparticular<S2SV_blank>purpose.\\\\n\" <S2SV_ModEnd> ) ; exit <S2SV_ModStart> ( isupper ( ( unsigned char ) <S2SV_ModStart> || isdigit ( ( unsigned char ) <S2SV_ModStart> ( islower ( ( unsigned char )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9533\n\n```\nCWE-787 static int loadImage ( TIFF * in , struct image_data * image , struct dump_opts * dump , unsigned char * * read_ptr ) { uint32 i ; float xres = 0.0 , yres = 0.0 ; <S2SV_StartBug> uint16 nstrips = 0 , ntiles = 0 , planar = 0 ; <S2SV_EndBug> uint16 bps = 0 , spp = 0 , res_unit = 0 ; uint16 orientation = 0 ; uint16 input_compression = 0 , input_photometric = 0 ; uint16 subsampling_horiz , subsampling_vert ; uint32 width = 0 , length = 0 ; uint32 stsize = 0 , tlsize = 0 , buffsize = 0 , scanlinesize = 0 ; uint32 tw = 0 , tl = 0 ; uint32 tile_rowsize = 0 ; unsigned char * read_buff = NULL ; unsigned char * new_buff = NULL ; int readunit = 0 ; static uint32 prev_readsize = 0 ; TIFFGetFieldDefaulted ( in , TIFFTAG_BITSPERSAMPLE , & bps ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_SAMPLESPERPIXEL , & spp ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_PLANARCONFIG , & planar ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_ORIENTATION , & orientation ) ; if ( ! TIFFGetFieldDefaulted ( in , TIFFTAG_PHOTOMETRIC , & input_photometric ) ) TIFFError ( \"loadImage\" , \"Image<S2SV_blank>lacks<S2SV_blank>Photometric<S2SV_blank>interpreation<S2SV_blank>tag\" ) ; if ( ! TIFFGetField ( in , TIFFTAG_IMAGEWIDTH , & width ) ) TIFFError ( \"loadimage\" , \"Image<S2SV_blank>lacks<S2SV_blank>image<S2SV_blank>width<S2SV_blank>tag\" ) ; if ( ! TIFFGetField ( in , TIFFTAG_IMAGELENGTH , & length ) ) TIFFError ( \"loadimage\" , \"Image<S2SV_blank>lacks<S2SV_blank>image<S2SV_blank>length<S2SV_blank>tag\" ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_XRESOLUTION , & xres ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_YRESOLUTION , & yres ) ; if ( ! TIFFGetFieldDefaulted ( in , TIFFTAG_RESOLUTIONUNIT , & res_unit ) ) res_unit = RESUNIT_INCH ; if ( ! TIFFGetField ( in , TIFFTAG_COMPRESSION , & input_compression ) ) input_compression = COMPRESSION_NONE ; # ifdef DEBUG2 char compressionid [ 16 ] ; switch ( input_compression ) { case COMPRESSION_NONE : strcpy ( compressionid , \"None/dump\" ) ; break ; case COMPRESSION_CCITTRLE : strcpy ( compressionid , \"Huffman<S2SV_blank>RLE\" ) ; break ; case COMPRESSION_CCITTFAX3 : strcpy ( compressionid , \"Group3<S2SV_blank>Fax\" ) ; break ; case COMPRESSION_CCITTFAX4 : strcpy ( compressionid , \"Group4<S2SV_blank>Fax\" ) ; break ; case COMPRESSION_LZW : strcpy ( compressionid , \"LZW\" ) ; break ; case COMPRESSION_OJPEG : strcpy ( compressionid , \"Old<S2SV_blank>Jpeg\" ) ; break ; case COMPRESSION_JPEG : strcpy ( compressionid , \"New<S2SV_blank>Jpeg\" ) ; break ; case COMPRESSION_NEXT : strcpy ( compressionid , \"Next<S2SV_blank>RLE\" ) ; break ; case COMPRESSION_CCITTRLEW : strcpy ( compressionid , \"CITTRLEW\" ) ; break ; case COMPRESSION_PACKBITS : strcpy ( compressionid , \"Mac<S2SV_blank>Packbits\" ) ; break ; case COMPRESSION_THUNDERSCAN : strcpy ( compressionid , \"Thunderscan\" ) ; break ; case COMPRESSION_IT8CTPAD : strcpy ( compressionid , \"IT8<S2SV_blank>padded\" ) ; break ; case COMPRESSION_IT8LW : strcpy ( compressionid , \"IT8<S2SV_blank>RLE\" ) ; break ; case COMPRESSION_IT8MP : strcpy ( compressionid , \"IT8<S2SV_blank>mono\" ) ; break ; case COMPRESSION_IT8BL : strcpy ( compressionid , \"IT8<S2SV_blank>lineart\" ) ; break ; case COMPRESSION_PIXARFILM : strcpy ( compressionid , \"Pixar<S2SV_blank>10<S2SV_blank>bit\" ) ; break ; case COMPRESSION_PIXARLOG : strcpy ( compressionid , \"Pixar<S2SV_blank>11bit\" ) ; break ; case COMPRESSION_DEFLATE : strcpy ( compressionid , \"Deflate\" ) ; break ; case COMPRESSION_ADOBE_DEFLATE : strcpy ( compressionid , \"Adobe<S2SV_blank>deflate\" ) ; break ; default : strcpy ( compressionid , \"None/unknown\" ) ; break ; } TIFFError ( \"loadImage\" , \"Input<S2SV_blank>compression<S2SV_blank>%s\" , compressionid ) ; # endif scanlinesize = TIFFScanlineSize ( in ) ; image -> bps = bps ; image -> spp = spp ; image -> planar = planar ; image -> width = width ; image -> length = length ; image -> xres = xres ; image -> yres = yres ; image -> res_unit = res_unit ; image -> compression = input_compression ; image -> photometric = input_photometric ; # ifdef DEBUG2 char photometricid [ 12 ] ; switch ( input_photometric ) { case PHOTOMETRIC_MINISWHITE : strcpy ( photometricid , \"MinIsWhite\" ) ; break ; case PHOTOMETRIC_MINISBLACK : strcpy ( photometricid , \"MinIsBlack\" ) ; break ; case PHOTOMETRIC_RGB : strcpy ( photometricid , \"RGB\" ) ; break ; case PHOTOMETRIC_PALETTE : strcpy ( photometricid , \"Palette\" ) ; break ; case PHOTOMETRIC_MASK : strcpy ( photometricid , \"Mask\" ) ; break ; case PHOTOMETRIC_SEPARATED : strcpy ( photometricid , \"Separated\" ) ; break ; case PHOTOMETRIC_YCBCR : strcpy ( photometricid , \"YCBCR\" ) ; break ; case PHOTOMETRIC_CIELAB : strcpy ( photometricid , \"CIELab\" ) ; break ; case PHOTOMETRIC_ICCLAB : strcpy ( photometricid , \"ICCLab\" ) ; break ; case PHOTOMETRIC_ITULAB : strcpy ( photometricid , \"ITULab\" ) ; break ; case PHOTOMETRIC_LOGL : strcpy ( photometricid , \"LogL\" ) ; break ; case PHOTOMETRIC_LOGLUV : strcpy ( photometricid , \"LOGLuv\" ) ; break ; default : strcpy ( photometricid , \"Unknown\" ) ; break ; } TIFFError ( \"loadImage\" , \"Input<S2SV_blank>photometric<S2SV_blank>interpretation<S2SV_blank>%s\" , photometricid ) ; # endif image -> orientation = orientation ; switch ( orientation ) { case 0 : case ORIENTATION_TOPLEFT : image -> adjustments = 0 ; break ; case ORIENTATION_TOPRIGHT : image -> adjustments = MIRROR_HORIZ ; break ; case ORIENTATION_BOTRIGHT : image -> adjustments = ROTATECW_180 ; break ; case ORIENTATION_BOTLEFT : image -> adjustments = MIRROR_VERT ; break ; case ORIENTATION_LEFTTOP : image -> adjustments = MIRROR_VERT | ROTATECW_90 ; break ; case ORIENTATION_RIGHTTOP : image -> adjustments = ROTATECW_90 ; break ; case ORIENTATION_RIGHTBOT : image -> adjustments = MIRROR_VERT | ROTATECW_270 ; break ; case ORIENTATION_LEFTBOT : image -> adjustments = ROTATECW_270 ; break ; default : image -> adjustments = 0 ; image -> orientation = ORIENTATION_TOPLEFT ; } if ( ( bps == 0 ) || ( spp == 0 ) ) { TIFFError ( \"loadImage\" , \"Invalid<S2SV_blank>samples<S2SV_blank>per<S2SV_blank>pixel<S2SV_blank>(%d)<S2SV_blank>or<S2SV_blank>bits<S2SV_blank>per<S2SV_blank>sample<S2SV_blank>(%d)\" , spp , bps ) ; return ( - 1 ) ; } if ( TIFFIsTiled ( in ) ) { readunit = TILE ; tlsize = TIFFTileSize ( in ) ; ntiles = TIFFNumberOfTiles ( in ) ; TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tw ) ; TIFFGetField ( in , TIFFTAG_TILELENGTH , & tl ) ; tile_rowsize = TIFFTileRowSize ( in ) ; if ( ntiles == 0 || tlsize == 0 || tile_rowsize == 0 ) { TIFFError ( \"loadImage\" , \"File<S2SV_blank>appears<S2SV_blank>to<S2SV_blank>be<S2SV_blank>tiled,<S2SV_blank>but<S2SV_blank>the<S2SV_blank>number<S2SV_blank>of<S2SV_blank>tiles,<S2SV_blank>tile<S2SV_blank>size,<S2SV_blank>or<S2SV_blank>tile<S2SV_blank>rowsize<S2SV_blank>is<S2SV_blank>zero.\" ) ; exit ( - 1 ) ; } buffsize = tlsize * ntiles ; if ( tlsize != ( buffsize / ntiles ) ) { TIFFError ( \"loadImage\" , \"Integer<S2SV_blank>overflow<S2SV_blank>when<S2SV_blank>calculating<S2SV_blank>buffer<S2SV_blank>size\" ) ; exit ( - 1 ) ; } if ( buffsize < ( uint32 ) ( ntiles * tl * tile_rowsize ) ) { buffsize = ntiles * tl * tile_rowsize ; if ( ntiles != ( buffsize / tl / tile_rowsize ) ) { TIFFError ( \"loadImage\" , \"Integer<S2SV_blank>overflow<S2SV_blank>when<S2SV_blank>calculating<S2SV_blank>buffer<S2SV_blank>size\" ) ; exit ( - 1 ) ; } # ifdef DEBUG2 TIFFError ( \"loadImage\" , \"Tilesize<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small,<S2SV_blank>using<S2SV_blank>ntiles<S2SV_blank>*<S2SV_blank>tilelength<S2SV_blank>*<S2SV_blank>tilerowsize<S2SV_blank>%lu\" , tlsize , ( unsigned long ) buffsize ) ; # endif } if ( dump -> infile != NULL ) dump_info ( dump -> infile , dump -> format , \"\" , \"Tilesize:<S2SV_blank>%u,<S2SV_blank>Number<S2SV_blank>of<S2SV_blank>Tiles:<S2SV_blank>%u,<S2SV_blank>Tile<S2SV_blank>row<S2SV_blank>size:<S2SV_blank>%u\" , tlsize , ntiles , tile_rowsize ) ; } else { uint32 buffsize_check ; readunit = STRIP ; TIFFGetFieldDefaulted ( in , TIFFTAG_ROWSPERSTRIP , & rowsperstrip ) ; stsize = TIFFStripSize ( in ) ; nstrips = TIFFNumberOfStrips ( in ) ; if ( nstrips == 0 || stsize == 0 ) { TIFFError ( \"loadImage\" , \"File<S2SV_blank>appears<S2SV_blank>to<S2SV_blank>be<S2SV_blank>striped,<S2SV_blank>but<S2SV_blank>the<S2SV_blank>number<S2SV_blank>of<S2SV_blank>stipes<S2SV_blank>or<S2SV_blank>stripe<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero.\" ) ; exit ( - 1 ) ; } buffsize = stsize * nstrips ; if ( stsize != ( buffsize / nstrips ) ) { TIFFError ( \"loadImage\" , \"Integer<S2SV_blank>overflow<S2SV_blank>when<S2SV_blank>calculating<S2SV_blank>buffer<S2SV_blank>size\" ) ; exit ( - 1 ) ; } buffsize_check = ( ( length * width * spp * bps ) + 7 ) ; if ( length != ( ( buffsize_check - 7 ) / width / spp / bps ) ) { TIFFError ( \"loadImage\" , \"Integer<S2SV_blank>overflow<S2SV_blank>detected.\" ) ; exit ( - 1 ) ; } if ( buffsize < ( uint32 ) ( ( ( length * width * spp * bps ) + 7 ) / 8 ) ) { buffsize = ( ( length * width * spp * bps ) + 7 ) / 8 ; # ifdef DEBUG2 TIFFError ( \"loadImage\" , \"Stripsize<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small,<S2SV_blank>using<S2SV_blank>imagelength<S2SV_blank>*<S2SV_blank>width<S2SV_blank>*<S2SV_blank>spp<S2SV_blank>*<S2SV_blank>bps<S2SV_blank>/<S2SV_blank>8<S2SV_blank>=<S2SV_blank>%lu\" , stsize , ( unsigned long ) buffsize ) ; # endif } if ( dump -> infile != NULL ) dump_info ( dump -> infile , dump -> format , \"\" , \"Stripsize:<S2SV_blank>%u,<S2SV_blank>Number<S2SV_blank>of<S2SV_blank>Strips:<S2SV_blank>%u,<S2SV_blank>Rows<S2SV_blank>per<S2SV_blank>Strip:<S2SV_blank>%u,<S2SV_blank>Scanline<S2SV_blank>size:<S2SV_blank>%u\" , stsize , nstrips , rowsperstrip , scanlinesize ) ; } if ( input_compression == COMPRESSION_JPEG ) { jpegcolormode = JPEGCOLORMODE_RGB ; TIFFSetField ( in , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RGB ) ; } else { if ( input_photometric == PHOTOMETRIC_YCBCR ) { TIFFGetFieldDefaulted ( in , TIFFTAG_YCBCRSUBSAMPLING , & subsampling_horiz , & subsampling_vert ) ; if ( subsampling_horiz != 1 || subsampling_vert != 1 ) { TIFFError ( \"loadImage\" , \"Can\\'t<S2SV_blank>copy/convert<S2SV_blank>subsampled<S2SV_blank>image<S2SV_blank>with<S2SV_blank>subsampling<S2SV_blank>%d<S2SV_blank>horiz<S2SV_blank>%d<S2SV_blank>vert\" , subsampling_horiz , subsampling_vert ) ; return ( - 1 ) ; } } } read_buff = * read_ptr ; if ( ! read_buff ) <S2SV_StartBug> read_buff = ( unsigned char * ) _TIFFmalloc ( buffsize + 3 ) ; <S2SV_EndBug> <S2SV_StartBug> else <S2SV_EndBug> { if ( prev_readsize < buffsize ) <S2SV_StartBug> { <S2SV_EndBug> new_buff = _TIFFrealloc ( read_buff , buffsize + 3 ) ; if ( ! new_buff ) { free ( read_buff ) ; read_buff = ( unsigned char * ) _TIFFmalloc ( buffsize + 3 ) ; } else read_buff = new_buff ; } } if ( ! read_buff ) { TIFFError ( \"loadImage\" , \"Unable<S2SV_blank>to<S2SV_blank>allocate/reallocate<S2SV_blank>read<S2SV_blank>buffer\" ) ; return ( - 1 ) ; } read_buff [ buffsize ] = 0 ; read_buff [ buffsize + 1 ] = 0 ; read_buff [ buffsize + 2 ] = 0 ; prev_readsize = buffsize ; * read_ptr = read_buff ; switch ( readunit ) { case STRIP : if ( planar == PLANARCONFIG_CONTIG ) { if ( ! ( readContigStripsIntoBuffer ( in , read_buff ) ) ) { TIFFError ( \"loadImage\" , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>contiguous<S2SV_blank>strips<S2SV_blank>into<S2SV_blank>buffer\" ) ; return ( - 1 ) ; } } else { if ( ! ( readSeparateStripsIntoBuffer ( in , read_buff , length , width , spp , dump ) ) ) { TIFFError ( \"loadImage\" , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>separate<S2SV_blank>strips<S2SV_blank>into<S2SV_blank>buffer\" ) ; return ( - 1 ) ; } } break ; case TILE : if ( planar == PLANARCONFIG_CONTIG ) { if ( ! ( readContigTilesIntoBuffer ( in , read_buff , length , width , tw , tl , spp , bps ) ) ) { TIFFError ( \"loadImage\" , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>contiguous<S2SV_blank>tiles<S2SV_blank>into<S2SV_blank>buffer\" ) ; return ( - 1 ) ; } } else { if ( ! ( readSeparateTilesIntoBuffer ( in , read_buff , length , width , tw , tl , spp , bps ) ) ) { TIFFError ( \"loadImage\" , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>separate<S2SV_blank>tiles<S2SV_blank>into<S2SV_blank>buffer\" ) ; return ( - 1 ) ; } } break ; default : TIFFError ( \"loadImage\" , \"Unsupported<S2SV_blank>image<S2SV_blank>file<S2SV_blank>format\" ) ; return ( - 1 ) ; break ; } if ( ( dump -> infile != NULL ) && ( dump -> level == 2 ) ) { dump_info ( dump -> infile , dump -> format , \"loadImage\" , \"Image<S2SV_blank>width<S2SV_blank>%d,<S2SV_blank>length<S2SV_blank>%d,<S2SV_blank>Raw<S2SV_blank>image<S2SV_blank>data,<S2SV_blank>%4d<S2SV_blank>bytes\" , width , length , buffsize ) ; dump_info ( dump -> infile , dump -> format , \"\" , \"Bits<S2SV_blank>per<S2SV_blank>sample<S2SV_blank>%d,<S2SV_blank>Samples<S2SV_blank>per<S2SV_blank>pixel<S2SV_blank>%d\" , bps , spp ) ; for ( i = 0 ; i < length ; i ++ ) dump_buffer ( dump -> infile , dump -> format , 1 , scanlinesize , i , read_buff + ( i * scanlinesize ) ) ; } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0.0 ; uint32 nstrips = 0 , ntiles = 0 ; uint16 <S2SV_ModEnd> planar = 0 <S2SV_ModStart> ! read_buff ) { if ( buffsize > 0xFFFFFFFFU - 3 ) { TIFFError ( \"loadImage\" , \"Unable<S2SV_blank>to<S2SV_blank>allocate/reallocate<S2SV_blank>read<S2SV_blank>buffer\" ) ; return ( - 1 ) ; } <S2SV_ModStart> 3 ) ; } <S2SV_ModStart> buffsize ) { if ( buffsize > 0xFFFFFFFFU - 3 ) { TIFFError ( \"loadImage\" , \"Unable<S2SV_blank>to<S2SV_blank>allocate/reallocate<S2SV_blank>read<S2SV_blank>buffer\" ) ; return ( - 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15537\n\n```\nCWE-200 static int __fpu__restore_sig ( void __user * buf , void __user * buf_fx , int size ) { int ia32_fxstate = ( buf != buf_fx ) ; struct task_struct * tsk = current ; struct fpu * fpu = & tsk -> thread . fpu ; int state_size = fpu_kernel_xstate_size ; u64 xfeatures = 0 ; int fx_only = 0 ; ia32_fxstate &= ( IS_ENABLED ( CONFIG_X86_32 ) || IS_ENABLED ( CONFIG_IA32_EMULATION ) ) ; if ( ! buf ) { fpu__clear ( fpu ) ; return 0 ; } if ( ! access_ok ( VERIFY_READ , buf , size ) ) return - EACCES ; fpu__activate_curr ( fpu ) ; if ( ! static_cpu_has ( X86_FEATURE_FPU ) ) return fpregs_soft_set ( current , NULL , 0 , sizeof ( struct user_i387_ia32_struct ) , NULL , buf ) != 0 ; if ( use_xsave ( ) ) { struct _fpx_sw_bytes fx_sw_user ; if ( unlikely ( check_for_xstate ( buf_fx , buf_fx , & fx_sw_user ) ) ) { state_size = sizeof ( struct fxregs_state ) ; fx_only = 1 ; trace_x86_fpu_xstate_check_failed ( fpu ) ; } else { state_size = fx_sw_user . xstate_size ; xfeatures = fx_sw_user . xfeatures ; } } if ( ia32_fxstate ) { struct fpu * fpu = & tsk -> thread . fpu ; struct user_i387_ia32_struct env ; int err = 0 ; fpu__drop ( fpu ) ; <S2SV_StartBug> if ( using_compacted_format ( ) ) <S2SV_EndBug> err = copy_user_to_xstate ( & fpu -> state . xsave , buf_fx ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> err = __copy_from_user ( & fpu -> state . xsave , buf_fx , state_size ) ; <S2SV_EndBug> if ( err || __copy_from_user ( & env , buf , sizeof ( env ) ) ) { fpstate_init ( & fpu -> state ) ; trace_x86_fpu_init_state ( fpu ) ; err = - 1 ; } else { sanitize_restored_xstate ( tsk , & env , xfeatures , fx_only ) ; } fpu -> fpstate_active = 1 ; preempt_disable ( ) ; fpu__restore ( fpu ) ; preempt_enable ( ) ; return err ; } else { user_fpu_begin ( ) ; if ( copy_user_to_fpregs_zeroing ( buf_fx , xfeatures , fx_only ) ) { fpu__clear ( fpu ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ) { <S2SV_ModStart> buf_fx ) ; } else { <S2SV_ModEnd> err = __copy_from_user <S2SV_ModStart> state_size ) ; if ( ! err && state_size > offsetof ( struct xregs_state , header ) && fpu -> state . xsave . header . xcomp_bv ) err = - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_free_request ( SCSIRequest * req ) { SCSIDiskReq * r = DO_UPCAST ( SCSIDiskReq , req , req ) ; <S2SV_StartBug> qemu_vfree ( r -> iov . iov_base ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> req ) ; if ( r -> iov . iov_base ) { <S2SV_ModStart> ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 static int jpc_pi_nextcprl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; uint_fast32_t trx0 ; uint_fast32_t try0 ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> prgvolfirst = 0 ; } for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < JAS_CAST ( int , pchg -> compnoend ) && pi -> compno < pi -> numcomps ; ++ pi -> compno , ++ pi -> picomp ) { <S2SV_StartBug> pirlvl = pi -> picomp -> pirlvls ; <S2SV_EndBug> pi -> xstep = pi -> picomp -> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls - 1 ) ) ; pi -> ystep = pi -> picomp -> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcheightexpn + pi -> picomp -> numrlvls - 1 ) ) ; for ( rlvlno = 1 , pirlvl = & pi -> picomp -> pirlvls [ 1 ] ; rlvlno < pi -> picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { pi -> xstep = JAS_MIN ( pi -> xstep , pi -> picomp -> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls - rlvlno - 1 ) ) ) ; pi -> ystep = JAS_MIN ( pi -> ystep , pi -> picomp -> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcheightexpn + pi -> picomp -> numrlvls - rlvlno - 1 ) ) ) ; } for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> rlvlno = pchg -> rlvlnostart , pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; pi -> rlvlno < pi -> picomp -> numrlvls && pi -> rlvlno < pchg -> rlvlnoend ; ++ pi -> rlvlno , ++ pi -> pirlvl ) { if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; <S2SV_StartBug> if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( 1 << rpx ) ) ) || <S2SV_EndBug> ! ( pi -> x % ( pi -> picomp -> hsamp << rpx ) ) ) && <S2SV_StartBug> ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( 1 << rpy ) ) ) || <S2SV_EndBug> ! ( pi -> y % ( pi -> picomp -> vsamp << rpy ) ) ) ) { prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pirlvls ; if ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 || pirlvl -> prcheightexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 ) { return - 1 ; } <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpx ) <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpy )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18257\n\n```\nCWE-190 static int __get_data_block ( struct inode * inode , sector_t iblock , struct buffer_head * bh , int create , int flag , pgoff_t * next_pgofs ) { struct f2fs_map_blocks map ; int err ; map . m_lblk = iblock ; map . m_len = bh -> b_size >> inode -> i_blkbits ; map . m_next_pgofs = next_pgofs ; err = f2fs_map_blocks ( inode , & map , create , flag ) ; if ( ! err ) { map_bh ( bh , inode -> i_sb , map . m_pblk ) ; bh -> b_state = ( bh -> b_state & ~ F2FS_MAP_FLAGS ) | map . m_flags ; <S2SV_StartBug> bh -> b_size = map . m_len << inode -> i_blkbits ; <S2SV_EndBug> } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> b_size = ( u64 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t ksz8851UpdateMacAddrFilter ( NetInterface * interface ) { uint_t i ; uint_t k ; uint32_t crc ; uint16_t hashTable [ 4 ] ; MacFilterEntry * entry ; TRACE_DEBUG ( \"Updating<S2SV_blank>MAC<S2SV_blank>filter...\\\\r\\\\n\" ) ; osMemset ( hashTable , 0 , sizeof ( hashTable ) ) ; for ( i = 0 ; i < MAC_ADDR_FILTER_SIZE ; i ++ ) { entry = & interface -> macAddrFilter [ i ] ; if ( entry -> refCount > 0 ) { crc = ksz8851CalcCrc ( & entry -> addr , sizeof ( MacAddr ) ) ; k = ( crc >> 26 ) & 0x3F ; hashTable [ k / 16 ] |= ( 1 << ( k % 16 ) ) ; } } <S2SV_StartBug> ksz8851WriteReg ( interface , KSZ8851_REG_MAHTR0 , hashTable [ 0 ] ) ; <S2SV_EndBug> ksz8851WriteReg ( interface , KSZ8851_REG_MAHTR1 , hashTable [ 1 ] ) ; <S2SV_StartBug> ksz8851WriteReg ( interface , KSZ8851_REG_MAHTR2 , hashTable [ 2 ] ) ; <S2SV_EndBug> <S2SV_StartBug> ksz8851WriteReg ( interface , KSZ8851_REG_MAHTR3 , hashTable [ 3 ] ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>MAHTR0<S2SV_blank>=<S2SV_blank>%04\" PRIX16 \"\\\\r\\\\n\" , ksz8851ReadReg ( interface , KSZ8851_REG_MAHTR0 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>MAHTR1<S2SV_blank>=<S2SV_blank>%04\" PRIX16 \"\\\\r\\\\n\" , ksz8851ReadReg ( interface , KSZ8851_REG_MAHTR1 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>MAHTR2<S2SV_blank>=<S2SV_blank>%04\" PRIX16 \"\\\\r\\\\n\" , ksz8851ReadReg ( interface , KSZ8851_REG_MAHTR2 ) ) ; <S2SV_EndBug> <S2SV_StartBug> TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>MAHTR3<S2SV_blank>=<S2SV_blank>%04\" PRIX16 \"\\\\r\\\\n\" , ksz8851ReadReg ( interface , KSZ8851_REG_MAHTR3 ) ) ; <S2SV_EndBug> return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , KSZ8851_MAHTR0 , hashTable [ 0 ] ) ; ksz8851WriteReg ( interface , KSZ8851_MAHTR1 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , KSZ8851_MAHTR2 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , KSZ8851_MAHTR3 <S2SV_ModEnd> , hashTable [ <S2SV_ModStart> ( interface , KSZ8851_MAHTR0 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , KSZ8851_MAHTR1 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , KSZ8851_MAHTR2 <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( interface , KSZ8851_MAHTR3 <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * modify_policy_2_svc ( mpol_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } prime_arg = arg -> rec . policy ; if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_MODIFY , NULL , NULL ) ) { log_unauth ( \"kadm5_modify_policy\" , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_MODIFY ; } else { ret . code = kadm5_modify_policy ( ( void * ) handle , & arg -> rec , arg -> mask ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_modify_policy\" , ( ( prime_arg == NULL ) ? \"(null)\" : prime_arg ) , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> ) ; } exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static AVFrame * get_video_buffer ( AVFilterLink * inlink , int w , int h ) { PadContext * s = inlink -> dst -> priv ; AVFrame * frame = ff_get_video_buffer ( inlink -> dst -> outputs [ 0 ] , w + ( s -> w - s -> in_w ) , h + ( s -> h - s -> in_h ) ) ; int plane ; if ( ! frame ) return NULL ; frame -> width = w ; frame -> height = h ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && frame -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> int hsub = s -> draw . hsub [ plane ] ; int vsub = s -> draw . vsub [ plane ] ; frame -> data [ plane ] += ( s -> x >> hsub ) * s -> draw . pixelstep [ plane ] + ( s -> y >> vsub ) * frame -> linesize [ plane ] ; } return frame ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ plane ] && frame -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8807\n\n```\nCWE-119 static enum fetch_step vbf_stp_error ( struct worker * wrk , struct busyobj * bo ) { ssize_t l , ll , o ; double now ; uint8_t * ptr ; struct vsb * synth_body ; CHECK_OBJ_NOTNULL ( wrk , WORKER_MAGIC ) ; CHECK_OBJ_NOTNULL ( bo , BUSYOBJ_MAGIC ) ; CHECK_OBJ_NOTNULL ( bo -> fetch_objcore , OBJCORE_MAGIC ) ; AN ( bo -> fetch_objcore -> flags & OC_F_BUSY ) ; assert ( bo -> director_state == DIR_S_NULL ) ; wrk -> stats -> fetch_failed ++ ; now = W_TIM_real ( wrk ) ; VSLb_ts_busyobj ( bo , \"Error\" , now ) ; if ( bo -> fetch_objcore -> stobj -> stevedore != NULL ) ObjFreeObj ( bo -> wrk , bo -> fetch_objcore ) ; HTTP_Setup ( bo -> beresp , bo -> ws , bo -> vsl , SLT_BerespMethod ) ; http_PutResponse ( bo -> beresp , \"HTTP/1.1\" , 503 , \"Backend<S2SV_blank>fetch<S2SV_blank>failed\" ) ; http_TimeHeader ( bo -> beresp , \"Date:<S2SV_blank>\" , now ) ; http_SetHeader ( bo -> beresp , \"Server:<S2SV_blank>Varnish\" ) ; bo -> fetch_objcore -> t_origin = now ; if ( ! VTAILQ_EMPTY ( & bo -> fetch_objcore -> objhead -> waitinglist ) ) { bo -> fetch_objcore -> ttl = 1 ; bo -> fetch_objcore -> grace = 5 ; bo -> fetch_objcore -> keep = 5 ; } else { bo -> fetch_objcore -> ttl = 0 ; bo -> fetch_objcore -> grace = 0 ; bo -> fetch_objcore -> keep = 0 ; } synth_body = VSB_new_auto ( ) ; AN ( synth_body ) ; VCL_backend_error_method ( bo -> vcl , wrk , NULL , bo , synth_body ) ; AZ ( VSB_finish ( synth_body ) ) ; if ( wrk -> handling == VCL_RET_ABANDON || wrk -> handling == VCL_RET_FAIL ) { VSB_destroy ( & synth_body ) ; return ( F_STP_FAIL ) ; } if ( wrk -> handling == VCL_RET_RETRY ) { VSB_destroy ( & synth_body ) ; if ( bo -> retries ++ < cache_param -> max_retries ) return ( F_STP_RETRY ) ; VSLb ( bo -> vsl , SLT_VCL_Error , \"Too<S2SV_blank>many<S2SV_blank>retries,<S2SV_blank>failing\" ) ; return ( F_STP_FAIL ) ; } assert ( wrk -> handling == VCL_RET_DELIVER ) ; bo -> vfc -> bo = bo ; bo -> vfc -> wrk = bo -> wrk ; bo -> vfc -> oc = bo -> fetch_objcore ; bo -> vfc -> http = bo -> beresp ; bo -> vfc -> esi_req = bo -> bereq ; if ( vbf_beresp2obj ( bo ) ) { ( void ) VFP_Error ( bo -> vfc , \"Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>storage\" ) ; VSB_destroy ( & synth_body ) ; return ( F_STP_FAIL ) ; } ll = VSB_len ( synth_body ) ; o = 0 ; while ( ll > 0 ) { l = ll ; if ( VFP_GetStorage ( bo -> vfc , & l , & ptr ) != VFP_OK ) break ; <S2SV_StartBug> memcpy ( ptr , VSB_data ( synth_body ) + o , l ) ; <S2SV_EndBug> VFP_Extend ( bo -> vfc , l ) ; ll -= l ; o += l ; } AZ ( ObjSetU64 ( wrk , bo -> fetch_objcore , OA_LEN , o ) ) ; VSB_destroy ( & synth_body ) ; HSH_Unbusy ( wrk , bo -> fetch_objcore ) ; ObjSetState ( wrk , bo -> fetch_objcore , BOS_FINISHED ) ; return ( F_STP_DONE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; if ( l > ll ) l = ll ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13223\n\n```\nCWE-617 static int start_decoder ( vorb * f ) { uint8 header [ 6 ] , x , y ; int len , i , j , k , max_submaps = 0 ; int longest_floorlist = 0 ; if ( ! start_page ( f ) ) return FALSE ; if ( ! ( f -> page_flag & PAGEFLAG_first_page ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> page_flag & PAGEFLAG_last_page ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> page_flag & PAGEFLAG_continued_packet ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> segment_count != 1 ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> segments [ 0 ] != 30 ) { if ( f -> segments [ 0 ] == 64 && getn ( f , header , 6 ) && header [ 0 ] == 'f' && header [ 1 ] == 'i' && header [ 2 ] == 's' && header [ 3 ] == 'h' && header [ 4 ] == 'e' && header [ 5 ] == 'a' && get8 ( f ) == 'd' && get8 ( f ) == '\\\\0' ) return error ( f , VORBIS_ogg_skeleton_not_supported ) ; else return error ( f , VORBIS_invalid_first_page ) ; } if ( get8 ( f ) != VORBIS_packet_id ) return error ( f , VORBIS_invalid_first_page ) ; if ( ! getn ( f , header , 6 ) ) return error ( f , VORBIS_unexpected_eof ) ; if ( ! vorbis_validate ( header ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( get32 ( f ) != 0 ) return error ( f , VORBIS_invalid_first_page ) ; f -> channels = get8 ( f ) ; if ( ! f -> channels ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> channels > STB_VORBIS_MAX_CHANNELS ) return error ( f , VORBIS_too_many_channels ) ; f -> sample_rate = get32 ( f ) ; if ( ! f -> sample_rate ) return error ( f , VORBIS_invalid_first_page ) ; get32 ( f ) ; get32 ( f ) ; get32 ( f ) ; x = get8 ( f ) ; { int log0 , log1 ; log0 = x & 15 ; log1 = x >> 4 ; f -> blocksize_0 = 1 << log0 ; f -> blocksize_1 = 1 << log1 ; if ( log0 < 6 || log0 > 13 ) return error ( f , VORBIS_invalid_setup ) ; if ( log1 < 6 || log1 > 13 ) return error ( f , VORBIS_invalid_setup ) ; if ( log0 > log1 ) return error ( f , VORBIS_invalid_setup ) ; } x = get8 ( f ) ; if ( ! ( x & 1 ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( ! start_page ( f ) ) return FALSE ; if ( ! start_packet ( f ) ) return FALSE ; do { len = next_segment ( f ) ; skip ( f , len ) ; f -> bytes_in_seg = 0 ; } while ( len ) ; if ( ! start_packet ( f ) ) return FALSE ; # ifndef STB_VORBIS_NO_PUSHDATA_API if ( IS_PUSH_MODE ( f ) ) { if ( ! is_whole_packet_present ( f , TRUE ) ) { if ( f -> error == VORBIS_invalid_stream ) f -> error = VORBIS_invalid_setup ; return FALSE ; } } # endif crc32_init ( ) ; if ( get8_packet ( f ) != VORBIS_packet_setup ) return error ( f , VORBIS_invalid_setup ) ; for ( i = 0 ; i < 6 ; ++ i ) header [ i ] = get8_packet ( f ) ; if ( ! vorbis_validate ( header ) ) return error ( f , VORBIS_invalid_setup ) ; f -> codebook_count = get_bits ( f , 8 ) + 1 ; f -> codebooks = ( Codebook * ) setup_malloc ( f , sizeof ( * f -> codebooks ) * f -> codebook_count ) ; if ( f -> codebooks == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> codebooks , 0 , sizeof ( * f -> codebooks ) * f -> codebook_count ) ; for ( i = 0 ; i < f -> codebook_count ; ++ i ) { uint32 * values ; int ordered , sorted_count ; int total = 0 ; uint8 * lengths ; Codebook * c = f -> codebooks + i ; CHECK ( f ) ; x = get_bits ( f , 8 ) ; if ( x != 0x42 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; if ( x != 0x43 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; if ( x != 0x56 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; c -> dimensions = ( get_bits ( f , 8 ) << 8 ) + x ; x = get_bits ( f , 8 ) ; y = get_bits ( f , 8 ) ; c -> entries = ( get_bits ( f , 8 ) << 16 ) + ( y << 8 ) + x ; ordered = get_bits ( f , 1 ) ; c -> sparse = ordered ? 0 : get_bits ( f , 1 ) ; if ( c -> dimensions == 0 && c -> entries != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( c -> sparse ) lengths = ( uint8 * ) setup_temp_malloc ( f , c -> entries ) ; else lengths = c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> entries ) ; if ( ! lengths ) return error ( f , VORBIS_outofmem ) ; if ( ordered ) { int current_entry = 0 ; int current_length = get_bits ( f , 5 ) + 1 ; while ( current_entry < c -> entries ) { int limit = c -> entries - current_entry ; int n = get_bits ( f , ilog ( limit ) ) ; <S2SV_StartBug> if ( current_entry + n > ( int ) c -> entries ) { return error ( f , VORBIS_invalid_setup ) ; } <S2SV_EndBug> memset ( lengths + current_entry , current_length , n ) ; current_entry += n ; ++ current_length ; } } else { for ( j = 0 ; j < c -> entries ; ++ j ) { int present = c -> sparse ? get_bits ( f , 1 ) : 1 ; if ( present ) { lengths [ j ] = get_bits ( f , 5 ) + 1 ; ++ total ; if ( lengths [ j ] == 32 ) return error ( f , VORBIS_invalid_setup ) ; } else { lengths [ j ] = NO_CODE ; } } } if ( c -> sparse && total >= c -> entries >> 2 ) { if ( c -> entries > ( int ) f -> setup_temp_memory_required ) f -> setup_temp_memory_required = c -> entries ; c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> entries ) ; if ( c -> codeword_lengths == NULL ) return error ( f , VORBIS_outofmem ) ; memcpy ( c -> codeword_lengths , lengths , c -> entries ) ; setup_temp_free ( f , lengths , c -> entries ) ; lengths = c -> codeword_lengths ; c -> sparse = 0 ; } if ( c -> sparse ) { sorted_count = total ; } else { sorted_count = 0 ; # ifndef STB_VORBIS_NO_HUFFMAN_BINARY_SEARCH for ( j = 0 ; j < c -> entries ; ++ j ) if ( lengths [ j ] > STB_VORBIS_FAST_HUFFMAN_LENGTH && lengths [ j ] != NO_CODE ) ++ sorted_count ; # endif } c -> sorted_entries = sorted_count ; values = NULL ; CHECK ( f ) ; if ( ! c -> sparse ) { c -> codewords = ( uint32 * ) setup_malloc ( f , sizeof ( c -> codewords [ 0 ] ) * c -> entries ) ; if ( ! c -> codewords ) return error ( f , VORBIS_outofmem ) ; } else { unsigned int size ; if ( c -> sorted_entries ) { c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> sorted_entries ) ; if ( ! c -> codeword_lengths ) return error ( f , VORBIS_outofmem ) ; c -> codewords = ( uint32 * ) setup_temp_malloc ( f , sizeof ( * c -> codewords ) * c -> sorted_entries ) ; if ( ! c -> codewords ) return error ( f , VORBIS_outofmem ) ; values = ( uint32 * ) setup_temp_malloc ( f , sizeof ( * values ) * c -> sorted_entries ) ; if ( ! values ) return error ( f , VORBIS_outofmem ) ; } size = c -> entries + ( sizeof ( * c -> codewords ) + sizeof ( * values ) ) * c -> sorted_entries ; if ( size > f -> setup_temp_memory_required ) f -> setup_temp_memory_required = size ; } if ( ! compute_codewords ( c , lengths , c -> entries , values ) ) { if ( c -> sparse ) setup_temp_free ( f , values , 0 ) ; return error ( f , VORBIS_invalid_setup ) ; } if ( c -> sorted_entries ) { c -> sorted_codewords = ( uint32 * ) setup_malloc ( f , sizeof ( * c -> sorted_codewords ) * ( c -> sorted_entries + 1 ) ) ; if ( c -> sorted_codewords == NULL ) return error ( f , VORBIS_outofmem ) ; c -> sorted_values = ( int * ) setup_malloc ( f , sizeof ( * c -> sorted_values ) * ( c -> sorted_entries + 1 ) ) ; if ( c -> sorted_values == NULL ) return error ( f , VORBIS_outofmem ) ; ++ c -> sorted_values ; c -> sorted_values [ - 1 ] = - 1 ; compute_sorted_huffman ( c , lengths , values ) ; } if ( c -> sparse ) { setup_temp_free ( f , values , sizeof ( * values ) * c -> sorted_entries ) ; setup_temp_free ( f , c -> codewords , sizeof ( * c -> codewords ) * c -> sorted_entries ) ; setup_temp_free ( f , lengths , c -> entries ) ; c -> codewords = NULL ; } compute_accelerated_huffman ( c ) ; CHECK ( f ) ; c -> lookup_type = get_bits ( f , 4 ) ; if ( c -> lookup_type > 2 ) return error ( f , VORBIS_invalid_setup ) ; if ( c -> lookup_type > 0 ) { uint16 * mults ; c -> minimum_value = float32_unpack ( get_bits ( f , 32 ) ) ; c -> delta_value = float32_unpack ( get_bits ( f , 32 ) ) ; c -> value_bits = get_bits ( f , 4 ) + 1 ; c -> sequence_p = get_bits ( f , 1 ) ; if ( c -> lookup_type == 1 ) { <S2SV_StartBug> c -> lookup_values = lookup1_values ( c -> entries , c -> dimensions ) ; <S2SV_EndBug> } else { c -> lookup_values = c -> entries * c -> dimensions ; } if ( c -> lookup_values == 0 ) return error ( f , VORBIS_invalid_setup ) ; mults = ( uint16 * ) setup_temp_malloc ( f , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; if ( mults == NULL ) return error ( f , VORBIS_outofmem ) ; for ( j = 0 ; j < ( int ) c -> lookup_values ; ++ j ) { int q = get_bits ( f , c -> value_bits ) ; if ( q == EOP ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_invalid_setup ) ; } mults [ j ] = q ; } # ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK if ( c -> lookup_type == 1 ) { int len , sparse = c -> sparse ; float last = 0 ; if ( sparse ) { if ( c -> sorted_entries == 0 ) goto skip ; c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> sorted_entries * c -> dimensions ) ; } else c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> entries * c -> dimensions ) ; if ( c -> multiplicands == NULL ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_outofmem ) ; } len = sparse ? c -> sorted_entries : c -> entries ; for ( j = 0 ; j < len ; ++ j ) { unsigned int z = sparse ? c -> sorted_values [ j ] : j ; unsigned int div = 1 ; for ( k = 0 ; k < c -> dimensions ; ++ k ) { int off = ( z / div ) % c -> lookup_values ; float val = mults [ off ] ; val = mults [ off ] * c -> delta_value + c -> minimum_value + last ; c -> multiplicands [ j * c -> dimensions + k ] = val ; if ( c -> sequence_p ) last = val ; if ( k + 1 < c -> dimensions ) { if ( div > UINT_MAX / ( unsigned int ) c -> lookup_values ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_invalid_setup ) ; } div *= c -> lookup_values ; } } } c -> lookup_type = 2 ; } else # endif { float last = 0 ; CHECK ( f ) ; c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> lookup_values ) ; if ( c -> multiplicands == NULL ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_outofmem ) ; } for ( j = 0 ; j < ( int ) c -> lookup_values ; ++ j ) { float val = mults [ j ] * c -> delta_value + c -> minimum_value + last ; c -> multiplicands [ j ] = val ; if ( c -> sequence_p ) last = val ; } } # ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK skip : ; # endif setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; CHECK ( f ) ; } CHECK ( f ) ; } x = get_bits ( f , 6 ) + 1 ; for ( i = 0 ; i < x ; ++ i ) { uint32 z = get_bits ( f , 16 ) ; if ( z != 0 ) return error ( f , VORBIS_invalid_setup ) ; } f -> floor_count = get_bits ( f , 6 ) + 1 ; f -> floor_config = ( Floor * ) setup_malloc ( f , f -> floor_count * sizeof ( * f -> floor_config ) ) ; if ( f -> floor_config == NULL ) return error ( f , VORBIS_outofmem ) ; for ( i = 0 ; i < f -> floor_count ; ++ i ) { f -> floor_types [ i ] = get_bits ( f , 16 ) ; if ( f -> floor_types [ i ] > 1 ) return error ( f , VORBIS_invalid_setup ) ; if ( f -> floor_types [ i ] == 0 ) { Floor0 * g = & f -> floor_config [ i ] . floor0 ; g -> order = get_bits ( f , 8 ) ; g -> rate = get_bits ( f , 16 ) ; g -> bark_map_size = get_bits ( f , 16 ) ; g -> amplitude_bits = get_bits ( f , 6 ) ; g -> amplitude_offset = get_bits ( f , 8 ) ; g -> number_of_books = get_bits ( f , 4 ) + 1 ; for ( j = 0 ; j < g -> number_of_books ; ++ j ) g -> book_list [ j ] = get_bits ( f , 8 ) ; return error ( f , VORBIS_feature_not_supported ) ; } else { stbv__floor_ordering p [ 31 * 8 + 2 ] ; Floor1 * g = & f -> floor_config [ i ] . floor1 ; int max_class = - 1 ; g -> partitions = get_bits ( f , 5 ) ; for ( j = 0 ; j < g -> partitions ; ++ j ) { g -> partition_class_list [ j ] = get_bits ( f , 4 ) ; if ( g -> partition_class_list [ j ] > max_class ) max_class = g -> partition_class_list [ j ] ; } for ( j = 0 ; j <= max_class ; ++ j ) { g -> class_dimensions [ j ] = get_bits ( f , 3 ) + 1 ; g -> class_subclasses [ j ] = get_bits ( f , 2 ) ; if ( g -> class_subclasses [ j ] ) { g -> class_masterbooks [ j ] = get_bits ( f , 8 ) ; if ( g -> class_masterbooks [ j ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } for ( k = 0 ; k < 1 << g -> class_subclasses [ j ] ; ++ k ) { g -> subclass_books [ j ] [ k ] = get_bits ( f , 8 ) - 1 ; if ( g -> subclass_books [ j ] [ k ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } } g -> floor1_multiplier = get_bits ( f , 2 ) + 1 ; g -> rangebits = get_bits ( f , 4 ) ; g -> Xlist [ 0 ] = 0 ; g -> Xlist [ 1 ] = 1 << g -> rangebits ; g -> values = 2 ; for ( j = 0 ; j < g -> partitions ; ++ j ) { int c = g -> partition_class_list [ j ] ; for ( k = 0 ; k < g -> class_dimensions [ c ] ; ++ k ) { g -> Xlist [ g -> values ] = get_bits ( f , g -> rangebits ) ; ++ g -> values ; } } for ( j = 0 ; j < g -> values ; ++ j ) { p [ j ] . x = g -> Xlist [ j ] ; p [ j ] . id = j ; } qsort ( p , g -> values , sizeof ( p [ 0 ] ) , point_compare ) ; <S2SV_StartBug> for ( j = 0 ; j < g -> values ; ++ j ) <S2SV_EndBug> g -> sorted_order [ j ] = ( uint8 ) p [ j ] . id ; for ( j = 2 ; j < g -> values ; ++ j ) { int low , hi ; neighbors ( g -> Xlist , j , & low , & hi ) ; g -> neighbors [ j ] [ 0 ] = low ; g -> neighbors [ j ] [ 1 ] = hi ; } if ( g -> values > longest_floorlist ) longest_floorlist = g -> values ; } } f -> residue_count = get_bits ( f , 6 ) + 1 ; f -> residue_config = ( Residue * ) setup_malloc ( f , f -> residue_count * sizeof ( f -> residue_config [ 0 ] ) ) ; if ( f -> residue_config == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> residue_config , 0 , f -> residue_count * sizeof ( f -> residue_config [ 0 ] ) ) ; for ( i = 0 ; i < f -> residue_count ; ++ i ) { uint8 residue_cascade [ 64 ] ; Residue * r = f -> residue_config + i ; f -> residue_types [ i ] = get_bits ( f , 16 ) ; if ( f -> residue_types [ i ] > 2 ) return error ( f , VORBIS_invalid_setup ) ; r -> begin = get_bits ( f , 24 ) ; r -> end = get_bits ( f , 24 ) ; if ( r -> end < r -> begin ) return error ( f , VORBIS_invalid_setup ) ; r -> part_size = get_bits ( f , 24 ) + 1 ; r -> classifications = get_bits ( f , 6 ) + 1 ; r -> classbook = get_bits ( f , 8 ) ; if ( r -> classbook >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; for ( j = 0 ; j < r -> classifications ; ++ j ) { uint8 high_bits = 0 ; uint8 low_bits = get_bits ( f , 3 ) ; if ( get_bits ( f , 1 ) ) high_bits = get_bits ( f , 5 ) ; residue_cascade [ j ] = high_bits * 8 + low_bits ; } r -> residue_books = ( short ( * ) [ 8 ] ) setup_malloc ( f , sizeof ( r -> residue_books [ 0 ] ) * r -> classifications ) ; if ( r -> residue_books == NULL ) return error ( f , VORBIS_outofmem ) ; for ( j = 0 ; j < r -> classifications ; ++ j ) { for ( k = 0 ; k < 8 ; ++ k ) { if ( residue_cascade [ j ] & ( 1 << k ) ) { r -> residue_books [ j ] [ k ] = get_bits ( f , 8 ) ; if ( r -> residue_books [ j ] [ k ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } else { r -> residue_books [ j ] [ k ] = - 1 ; } } } r -> classdata = ( uint8 * * ) setup_malloc ( f , sizeof ( * r -> classdata ) * f -> codebooks [ r -> classbook ] . entries ) ; if ( ! r -> classdata ) return error ( f , VORBIS_outofmem ) ; memset ( r -> classdata , 0 , sizeof ( * r -> classdata ) * f -> codebooks [ r -> classbook ] . entries ) ; for ( j = 0 ; j < f -> codebooks [ r -> classbook ] . entries ; ++ j ) { int classwords = f -> codebooks [ r -> classbook ] . dimensions ; int temp = j ; r -> classdata [ j ] = ( uint8 * ) setup_malloc ( f , sizeof ( r -> classdata [ j ] [ 0 ] ) * classwords ) ; if ( r -> classdata [ j ] == NULL ) return error ( f , VORBIS_outofmem ) ; for ( k = classwords - 1 ; k >= 0 ; -- k ) { r -> classdata [ j ] [ k ] = temp % r -> classifications ; temp /= r -> classifications ; } } } f -> mapping_count = get_bits ( f , 6 ) + 1 ; f -> mapping = ( Mapping * ) setup_malloc ( f , f -> mapping_count * sizeof ( * f -> mapping ) ) ; if ( f -> mapping == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> mapping , 0 , f -> mapping_count * sizeof ( * f -> mapping ) ) ; for ( i = 0 ; i < f -> mapping_count ; ++ i ) { Mapping * m = f -> mapping + i ; int mapping_type = get_bits ( f , 16 ) ; if ( mapping_type != 0 ) return error ( f , VORBIS_invalid_setup ) ; m -> chan = ( MappingChannel * ) setup_malloc ( f , f -> channels * sizeof ( * m -> chan ) ) ; if ( m -> chan == NULL ) return error ( f , VORBIS_outofmem ) ; if ( get_bits ( f , 1 ) ) m -> submaps = get_bits ( f , 4 ) + 1 ; else m -> submaps = 1 ; if ( m -> submaps > max_submaps ) max_submaps = m -> submaps ; if ( get_bits ( f , 1 ) ) { <S2SV_StartBug> m -> coupling_steps = get_bits ( f , 8 ) + 1 ; <S2SV_EndBug> for ( k = 0 ; k < m -> coupling_steps ; ++ k ) { m -> chan [ k ] . magnitude = get_bits ( f , ilog ( f -> channels - 1 ) ) ; m -> chan [ k ] . angle = get_bits ( f , ilog ( f -> channels - 1 ) ) ; if ( m -> chan [ k ] . magnitude >= f -> channels ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> chan [ k ] . angle >= f -> channels ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> chan [ k ] . magnitude == m -> chan [ k ] . angle ) return error ( f , VORBIS_invalid_setup ) ; } } else m -> coupling_steps = 0 ; if ( get_bits ( f , 2 ) ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> submaps > 1 ) { for ( j = 0 ; j < f -> channels ; ++ j ) { m -> chan [ j ] . mux = get_bits ( f , 4 ) ; if ( m -> chan [ j ] . mux >= m -> submaps ) return error ( f , VORBIS_invalid_setup ) ; } } else for ( j = 0 ; j < f -> channels ; ++ j ) m -> chan [ j ] . mux = 0 ; for ( j = 0 ; j < m -> submaps ; ++ j ) { get_bits ( f , 8 ) ; m -> submap_floor [ j ] = get_bits ( f , 8 ) ; m -> submap_residue [ j ] = get_bits ( f , 8 ) ; if ( m -> submap_floor [ j ] >= f -> floor_count ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> submap_residue [ j ] >= f -> residue_count ) return error ( f , VORBIS_invalid_setup ) ; } } f -> mode_count = get_bits ( f , 6 ) + 1 ; for ( i = 0 ; i < f -> mode_count ; ++ i ) { Mode * m = f -> mode_config + i ; m -> blockflag = get_bits ( f , 1 ) ; m -> windowtype = get_bits ( f , 16 ) ; m -> transformtype = get_bits ( f , 16 ) ; m -> mapping = get_bits ( f , 8 ) ; if ( m -> windowtype != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> transformtype != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> mapping >= f -> mapping_count ) return error ( f , VORBIS_invalid_setup ) ; } flush_packet ( f ) ; f -> previous_length = 0 ; for ( i = 0 ; i < f -> channels ; ++ i ) { f -> channel_buffers [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 ) ; f -> previous_window [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 / 2 ) ; f -> finalY [ i ] = ( int16 * ) setup_malloc ( f , sizeof ( int16 ) * longest_floorlist ) ; if ( f -> channel_buffers [ i ] == NULL || f -> previous_window [ i ] == NULL || f -> finalY [ i ] == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> channel_buffers [ i ] , 0 , sizeof ( float ) * f -> blocksize_1 ) ; # ifdef STB_VORBIS_NO_DEFER_FLOOR f -> floor_buffers [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 / 2 ) ; if ( f -> floor_buffers [ i ] == NULL ) return error ( f , VORBIS_outofmem ) ; # endif } if ( ! init_blocksize ( f , 0 , f -> blocksize_0 ) ) return FALSE ; if ( ! init_blocksize ( f , 1 , f -> blocksize_1 ) ) return FALSE ; f -> blocksize [ 0 ] = f -> blocksize_0 ; f -> blocksize [ 1 ] = f -> blocksize_1 ; # ifdef STB_VORBIS_DIVIDE_TABLE if ( integer_divide_table [ 1 ] [ 1 ] == 0 ) for ( i = 0 ; i < DIVTAB_NUMER ; ++ i ) for ( j = 1 ; j < DIVTAB_DENOM ; ++ j ) integer_divide_table [ i ] [ j ] = i / j ; # endif { uint32 imdct_mem = ( f -> blocksize_1 * sizeof ( float ) >> 1 ) ; uint32 classify_mem ; int i , max_part_read = 0 ; for ( i = 0 ; i < f -> residue_count ; ++ i ) { Residue * r = f -> residue_config + i ; unsigned int actual_size = f -> blocksize_1 / 2 ; unsigned int limit_r_begin = r -> begin < actual_size ? r -> begin : actual_size ; unsigned int limit_r_end = r -> end < actual_size ? r -> end : actual_size ; int n_read = limit_r_end - limit_r_begin ; int part_read = n_read / r -> part_size ; if ( part_read > max_part_read ) max_part_read = part_read ; } # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE classify_mem = f -> channels * ( sizeof ( void * ) + max_part_read * sizeof ( uint8 * ) ) ; # else classify_mem = f -> channels * ( sizeof ( void * ) + max_part_read * sizeof ( int * ) ) ; # endif f -> temp_memory_required = classify_mem ; if ( imdct_mem > f -> temp_memory_required ) f -> temp_memory_required = imdct_mem ; } f -> first_decode = TRUE ; if ( f -> alloc . alloc_buffer ) { assert ( f -> temp_offset == f -> alloc . alloc_buffer_length_in_bytes ) ; if ( f -> setup_offset + sizeof ( * f ) + f -> temp_memory_required > ( unsigned ) f -> temp_offset ) return error ( f , VORBIS_outofmem ) ; } f -> first_audio_page_offset = stb_vorbis_get_file_offset ( f ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( current_length >= 32 ) return error ( f , VORBIS_invalid_setup ) ; if ( <S2SV_ModStart> 1 ) { int values = lookup1_values ( c -> entries , c -> dimensions ) ; if ( values < 0 ) return error ( f , VORBIS_invalid_setup ) ; <S2SV_ModStart> -> lookup_values = ( uint32 ) values <S2SV_ModEnd> ; } else <S2SV_ModStart> g -> values - 1 ; ++ j ) if ( p [ j ] . x == p [ j + 1 ] . x ) return error ( f , VORBIS_invalid_setup ) ; for ( j = 0 ; j < g -> values <S2SV_ModStart> ) + 1 ; if ( m -> coupling_steps > f -> channels ) return error ( f , VORBIS_invalid_setup )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10021\n\n```\nCWE-000 static void sas_eh_handle_sas_errors ( struct Scsi_Host * shost , struct list_head * work_q ) { struct scsi_cmnd * cmd , * n ; enum task_disposition res = TASK_IS_DONE ; int tmf_resp , need_reset ; struct sas_internal * i = to_sas_internal ( shost -> transportt ) ; unsigned long flags ; struct sas_ha_struct * ha = SHOST_TO_SAS_HA ( shost ) ; LIST_HEAD ( done ) ; list_for_each_entry_safe ( cmd , n , work_q , eh_entry ) { struct domain_device * dev = cmd_to_domain_dev ( cmd ) ; struct sas_task * task ; spin_lock_irqsave ( & dev -> done_lock , flags ) ; task = TO_SAS_TASK ( cmd ) ; spin_unlock_irqrestore ( & dev -> done_lock , flags ) ; if ( ! task ) list_move_tail ( & cmd -> eh_entry , & done ) ; } Again : list_for_each_entry_safe ( cmd , n , work_q , eh_entry ) { struct sas_task * task = TO_SAS_TASK ( cmd ) ; list_del_init ( & cmd -> eh_entry ) ; spin_lock_irqsave ( & task -> task_state_lock , flags ) ; need_reset = task -> task_state_flags & SAS_TASK_NEED_DEV_RESET ; spin_unlock_irqrestore ( & task -> task_state_lock , flags ) ; if ( need_reset ) { SAS_DPRINTK ( \"%s:<S2SV_blank>task<S2SV_blank>0x%p<S2SV_blank>requests<S2SV_blank>reset\\\\n\" , __func__ , task ) ; goto reset ; } SAS_DPRINTK ( \"trying<S2SV_blank>to<S2SV_blank>find<S2SV_blank>task<S2SV_blank>0x%p\\\\n\" , task ) ; res = sas_scsi_find_task ( task ) ; switch ( res ) { case TASK_IS_DONE : SAS_DPRINTK ( \"%s:<S2SV_blank>task<S2SV_blank>0x%p<S2SV_blank>is<S2SV_blank>done\\\\n\" , __func__ , task ) ; <S2SV_StartBug> sas_eh_defer_cmd ( cmd ) ; <S2SV_EndBug> continue ; case TASK_IS_ABORTED : SAS_DPRINTK ( \"%s:<S2SV_blank>task<S2SV_blank>0x%p<S2SV_blank>is<S2SV_blank>aborted\\\\n\" , __func__ , task ) ; <S2SV_StartBug> sas_eh_defer_cmd ( cmd ) ; <S2SV_EndBug> continue ; case TASK_IS_AT_LU : SAS_DPRINTK ( \"task<S2SV_blank>0x%p<S2SV_blank>is<S2SV_blank>at<S2SV_blank>LU:<S2SV_blank>lu<S2SV_blank>recover\\\\n\" , task ) ; reset : tmf_resp = sas_recover_lu ( task -> dev , cmd ) ; if ( tmf_resp == TMF_RESP_FUNC_COMPLETE ) { SAS_DPRINTK ( \"dev<S2SV_blank>%016llx<S2SV_blank>LU<S2SV_blank>%llx<S2SV_blank>is<S2SV_blank>\" \"recovered\\\\n\" , SAS_ADDR ( task -> dev ) , cmd -> device -> lun ) ; <S2SV_StartBug> sas_eh_defer_cmd ( cmd ) ; <S2SV_EndBug> sas_scsi_clear_queue_lu ( work_q , cmd ) ; goto Again ; } case TASK_IS_NOT_AT_LU : case TASK_ABORT_FAILED : SAS_DPRINTK ( \"task<S2SV_blank>0x%p<S2SV_blank>is<S2SV_blank>not<S2SV_blank>at<S2SV_blank>LU:<S2SV_blank>I_T<S2SV_blank>recover\\\\n\" , task ) ; tmf_resp = sas_recover_I_T ( task -> dev ) ; if ( tmf_resp == TMF_RESP_FUNC_COMPLETE || tmf_resp == - ENODEV ) { struct domain_device * dev = task -> dev ; SAS_DPRINTK ( \"I_T<S2SV_blank>%016llx<S2SV_blank>recovered\\\\n\" , SAS_ADDR ( task -> dev -> sas_addr ) ) ; sas_eh_finish_cmd ( cmd ) ; sas_scsi_clear_queue_I_T ( work_q , dev ) ; goto Again ; } try_to_reset_cmd_device ( cmd ) ; if ( i -> dft -> lldd_clear_nexus_port ) { struct asd_sas_port * port = task -> dev -> port ; SAS_DPRINTK ( \"clearing<S2SV_blank>nexus<S2SV_blank>for<S2SV_blank>port:%d\\\\n\" , port -> id ) ; res = i -> dft -> lldd_clear_nexus_port ( port ) ; if ( res == TMF_RESP_FUNC_COMPLETE ) { SAS_DPRINTK ( \"clear<S2SV_blank>nexus<S2SV_blank>port:%d<S2SV_blank>\" \"succeeded\\\\n\" , port -> id ) ; sas_eh_finish_cmd ( cmd ) ; sas_scsi_clear_queue_port ( work_q , port ) ; goto Again ; } } if ( i -> dft -> lldd_clear_nexus_ha ) { SAS_DPRINTK ( \"clear<S2SV_blank>nexus<S2SV_blank>ha\\\\n\" ) ; res = i -> dft -> lldd_clear_nexus_ha ( ha ) ; if ( res == TMF_RESP_FUNC_COMPLETE ) { SAS_DPRINTK ( \"clear<S2SV_blank>nexus<S2SV_blank>ha<S2SV_blank>\" \"succeeded\\\\n\" ) ; sas_eh_finish_cmd ( cmd ) ; goto clear_q ; } } SAS_DPRINTK ( \"error<S2SV_blank>from<S2SV_blank><S2SV_blank>device<S2SV_blank>%llx,<S2SV_blank>LUN<S2SV_blank>%llx<S2SV_blank>\" \"couldn\\'t<S2SV_blank>be<S2SV_blank>recovered<S2SV_blank>in<S2SV_blank>any<S2SV_blank>way\\\\n\" , SAS_ADDR ( task -> dev -> sas_addr ) , cmd -> device -> lun ) ; sas_eh_finish_cmd ( cmd ) ; goto clear_q ; } } out : list_splice_tail ( & done , work_q ) ; list_splice_tail_init ( & ha -> eh_ata_q , work_q ) ; return ; clear_q : SAS_DPRINTK ( \"---<S2SV_blank>Exit<S2SV_blank>%s<S2SV_blank>--<S2SV_blank>clear_q\\\\n\" , __func__ ) ; list_for_each_entry_safe ( cmd , n , work_q , eh_entry ) sas_eh_finish_cmd ( cmd ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> task ) ; sas_eh_finish_cmd <S2SV_ModEnd> ( cmd ) <S2SV_ModStart> task ) ; sas_eh_finish_cmd <S2SV_ModEnd> ( cmd ) <S2SV_ModStart> lun ) ; sas_eh_finish_cmd <S2SV_ModEnd> ( cmd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 int wait_for_key_construction ( struct key * key , bool intr ) { int ret ; ret = wait_on_bit ( & key -> flags , KEY_FLAG_USER_CONSTRUCT , intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE ) ; if ( ret ) return - ERESTARTSYS ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) { <S2SV_EndBug> smp_rmb ( ) ; return key -> reject_error ; } return key_validate ( key ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ERESTARTSYS ; ret = key_read_state ( key ) ; if ( ret < 0 ) return ret ; <S2SV_ModEnd> return key_validate (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_set_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> <S2SV_StartBug> vpx_ref_frame_t * const data = va_arg ( args , vpx_ref_frame_t * ) ; <S2SV_EndBug> if ( data ) { vpx_ref_frame_t * const frame = ( vpx_ref_frame_t * ) data ; YV12_BUFFER_CONFIG sd ; <S2SV_StartBug> image2yuvconfig ( & frame -> img , & sd ) ; <S2SV_EndBug> <S2SV_StartBug> return vp9_set_reference_dec ( & ctx -> pbi -> common , <S2SV_EndBug> ( VP9_REFFRAME ) frame -> frame_type , & sd ) ; } else { return VPX_CODEC_INVALID_PARAM ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> * ) ; if ( ctx -> frame_parallel_decode ) { set_error_detail ( ctx , \"Not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>frame<S2SV_blank>parallel<S2SV_blank>decode\" ) ; return VPX_CODEC_INCAPABLE ; } <S2SV_ModStart> YV12_BUFFER_CONFIG sd ; VPxWorker * const worker = ctx -> frame_workers ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; <S2SV_ModStart> vp9_set_reference_dec ( & frame_worker_data <S2SV_ModEnd> -> pbi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11089\n\n```\nCWE-125 static UINT printer_process_irp_write ( PRINTER_DEVICE * printer_dev , IRP * irp ) { UINT32 Length ; UINT64 Offset ; rdpPrintJob * printjob = NULL ; UINT error = CHANNEL_RC_OK ; <S2SV_StartBug> Stream_Read_UINT32 ( irp -> input , Length ) ; <S2SV_EndBug> Stream_Read_UINT64 ( irp -> input , Offset ) ; Stream_Seek ( irp -> input , 20 ) ; <S2SV_StartBug> if ( printer_dev -> printer ) <S2SV_EndBug> printjob = printer_dev -> printer -> FindPrintJob ( printer_dev -> printer , irp -> FileId ) ; if ( ! printjob ) { irp -> IoStatus = STATUS_UNSUCCESSFUL ; Length = 0 ; } else { <S2SV_StartBug> error = printjob -> Write ( printjob , Stream_Pointer ( irp -> input ) , Length ) ; <S2SV_EndBug> } if ( error ) { WLog_ERR ( TAG , \"printjob->Write<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>error<S2SV_blank>%\" PRIu32 \"!\" , error ) ; return error ; } Stream_Write_UINT32 ( irp -> output , Length ) ; Stream_Write_UINT8 ( irp -> output , 0 ) ; return irp -> Complete ( irp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = CHANNEL_RC_OK ; void * ptr ; if ( Stream_GetRemainingLength ( irp -> input ) < 32 ) return ERROR_INVALID_DATA ; <S2SV_ModStart> 20 ) ; ptr = Stream_Pointer ( irp -> input ) ; if ( ! Stream_SafeSeek ( irp -> input , Length ) ) return ERROR_INVALID_DATA ; <S2SV_ModStart> ( printjob , ptr <S2SV_ModEnd> , Length )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-327(使用破解或有风险的加密算法)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19962\n\n```\nCWE-327 int wc_SignatureGenerateHash ( enum wc_HashType hash_type , enum wc_SignatureType sig_type , const byte * hash_data , word32 hash_len , byte * sig , word32 * sig_len , const void * key , word32 key_len , WC_RNG * rng ) { <S2SV_StartBug> int ret ; <S2SV_EndBug> ( void ) rng ; if ( hash_data == NULL || hash_len <= 0 || sig == NULL || sig_len == NULL || * sig_len <= 0 || key == NULL || key_len <= 0 ) { return BAD_FUNC_ARG ; } <S2SV_StartBug> if ( ( int ) * sig_len < wc_SignatureGetSize ( sig_type , key , key_len ) ) { <S2SV_EndBug> WOLFSSL_MSG ( \"wc_SignatureGenerate:<S2SV_blank>Invalid<S2SV_blank>sig<S2SV_blank>type/len\" ) ; return BAD_FUNC_ARG ; } ret = wc_HashGetDigestSize ( hash_type ) ; if ( ret < 0 ) { WOLFSSL_MSG ( \"wc_SignatureGenerate:<S2SV_blank>Invalid<S2SV_blank>hash<S2SV_blank>type/len\" ) ; return ret ; } ret = 0 ; switch ( sig_type ) { case WC_SIGNATURE_TYPE_ECC : # if defined ( HAVE_ECC ) && defined ( HAVE_ECC_SIGN ) do { # ifdef WOLFSSL_ASYNC_CRYPT ret = wc_AsyncWait ( ret , & ( ( ecc_key * ) key ) -> asyncDev , WC_ASYNC_FLAG_CALL_AGAIN ) ; # endif if ( ret >= 0 ) ret = wc_ecc_sign_hash ( hash_data , hash_len , sig , sig_len , rng , ( ecc_key * ) key ) ; <S2SV_StartBug> } while ( ret == WC_PENDING_E ) ; <S2SV_EndBug> # else ret = SIG_TYPE_E ; # endif break ; case WC_SIGNATURE_TYPE_RSA_W_ENC : case WC_SIGNATURE_TYPE_RSA : # if ! defined ( NO_RSA ) && ! defined ( WOLFSSL_RSA_PUBLIC_ONLY ) do { # ifdef WOLFSSL_ASYNC_CRYPT ret = wc_AsyncWait ( ret , & ( ( RsaKey * ) key ) -> asyncDev , WC_ASYNC_FLAG_CALL_AGAIN ) ; # endif if ( ret >= 0 ) ret = wc_RsaSSL_Sign ( hash_data , hash_len , sig , * sig_len , ( RsaKey * ) key , rng ) ; } while ( ret == WC_PENDING_E ) ; if ( ret >= 0 ) { * sig_len = ret ; ret = 0 ; } # else ret = SIG_TYPE_E ; # endif break ; case WC_SIGNATURE_TYPE_NONE : default : ret = BAD_FUNC_ARG ; break ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rng ) { return wc_SignatureGenerateHash_ex ( hash_type , sig_type , hash_data , hash_len , sig , sig_len <S2SV_ModEnd> , key , <S2SV_ModStart> key , key_len , rng , 1 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4470\n\n```\nCWE-264 static inline int ip6_ufo_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int hh_len , int fragheaderlen , int transhdrlen , int mtu , unsigned int flags , struct rt6_info * rt ) { struct sk_buff * skb ; <S2SV_StartBug> int err ; <S2SV_EndBug> if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) { <S2SV_StartBug> struct frag_hdr fhdr ; <S2SV_EndBug> skb = sock_alloc_send_skb ( sk , hh_len + fragheaderlen + transhdrlen + 20 , ( flags & MSG_DONTWAIT ) , & err ) ; if ( skb == NULL ) return err ; skb_reserve ( skb , hh_len ) ; skb_put ( skb , fragheaderlen + transhdrlen ) ; skb_reset_network_header ( skb ) ; skb -> transport_header = skb -> network_header + fragheaderlen ; skb -> protocol = htons ( ETH_P_IPV6 ) ; <S2SV_StartBug> skb -> ip_summed = CHECKSUM_PARTIAL ; <S2SV_EndBug> skb -> csum = 0 ; skb_shinfo ( skb ) -> gso_size = ( mtu - fragheaderlen - sizeof ( struct frag_hdr ) ) & ~ 7 ; skb_shinfo ( skb ) -> gso_type = SKB_GSO_UDP ; ipv6_select_ident ( & fhdr , rt ) ; skb_shinfo ( skb ) -> ip6_frag_id = fhdr . identification ; <S2SV_StartBug> __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; <S2SV_EndBug> } return skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * skb ; struct frag_hdr fhdr ; <S2SV_ModStart> NULL ) { <S2SV_ModEnd> skb = sock_alloc_send_skb <S2SV_ModStart> ; skb -> csum = 0 ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; } else if ( skb_is_gso ( skb ) ) { goto append ; } skb -> <S2SV_ModStart> ip_summed = CHECKSUM_PARTIAL <S2SV_ModEnd> ; skb_shinfo ( <S2SV_ModStart> . identification ; append : <S2SV_ModEnd> return skb_append_datato_frags (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6546\n\n```\nCWE-200 static int pvc_getname ( struct socket * sock , struct sockaddr * sockaddr , int * sockaddr_len , int peer ) { struct sockaddr_atmpvc * addr ; struct atm_vcc * vcc = ATM_SD ( sock ) ; if ( ! vcc -> dev || ! test_bit ( ATM_VF_ADDR , & vcc -> flags ) ) return - ENOTCONN ; * sockaddr_len = sizeof ( struct sockaddr_atmpvc ) ; addr = ( struct sockaddr_atmpvc * ) sockaddr ; <S2SV_StartBug> addr -> sap_family = AF_ATMPVC ; <S2SV_EndBug> addr -> sap_addr . itf = vcc -> dev -> number ; addr -> sap_addr . vpi = vcc -> vpi ; addr -> sap_addr . vci = vcc -> vci ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) sockaddr ; memset ( addr , 0 , sizeof ( * addr ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9529\n\n```\nCWE-362 static noinline void key_gc_unused_keys ( struct list_head * keys ) { while ( ! list_empty ( keys ) ) { struct key * key = list_entry ( keys -> next , struct key , graveyard_link ) ; list_del ( & key -> graveyard_link ) ; kdebug ( \"-<S2SV_blank>%u\" , key -> serial ) ; key_check ( key ) ; security_key_free ( key ) ; if ( test_bit ( KEY_FLAG_IN_QUOTA , & key -> flags ) ) { spin_lock ( & key -> user -> lock ) ; key -> user -> qnkeys -- ; key -> user -> qnbytes -= key -> quotalen ; spin_unlock ( & key -> user -> lock ) ; } atomic_dec ( & key -> user -> nkeys ) ; if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) atomic_dec ( & key -> user -> nikeys ) ; <S2SV_StartBug> key_user_put ( key -> user ) ; <S2SV_EndBug> if ( key -> type -> destroy ) key -> type -> destroy ( key ) ; kfree ( key -> description ) ; # ifdef KEY_DEBUGGING key -> magic = KEY_DEBUG_MAGIC_X ; # endif kmem_cache_free ( key_jar , key ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nikeys ) ; if ( key -> type -> destroy ) key -> type -> destroy ( key ) ; <S2SV_ModStart> key -> user <S2SV_ModEnd> ) ; kfree\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9120\n\n```\nCWE-416 static long ion_ioctl ( struct file * filp , unsigned int cmd , unsigned long arg ) { struct ion_client * client = filp -> private_data ; struct ion_device * dev = client -> dev ; struct ion_handle * cleanup_handle = NULL ; int ret = 0 ; unsigned int dir ; union { struct ion_fd_data fd ; struct ion_allocation_data allocation ; struct ion_handle_data handle ; struct ion_custom_data custom ; } data ; dir = ion_ioctl_dir ( cmd ) ; if ( _IOC_SIZE ( cmd ) > sizeof ( data ) ) return - EINVAL ; if ( dir & _IOC_WRITE ) if ( copy_from_user ( & data , ( void __user * ) arg , _IOC_SIZE ( cmd ) ) ) return - EFAULT ; switch ( cmd ) { case ION_IOC_ALLOC : { struct ion_handle * handle ; handle = ion_alloc ( client , data . allocation . len , data . allocation . align , data . allocation . heap_id_mask , data . allocation . flags ) ; if ( IS_ERR ( handle ) ) return PTR_ERR ( handle ) ; data . allocation . handle = handle -> id ; cleanup_handle = handle ; break ; } case ION_IOC_FREE : { struct ion_handle * handle ; <S2SV_StartBug> handle = ion_handle_get_by_id ( client , data . handle . handle ) ; <S2SV_EndBug> <S2SV_StartBug> if ( IS_ERR ( handle ) ) <S2SV_EndBug> return PTR_ERR ( handle ) ; <S2SV_StartBug> ion_free ( client , handle ) ; <S2SV_EndBug> ion_handle_put ( handle ) ; break ; } case ION_IOC_SHARE : case ION_IOC_MAP : { struct ion_handle * handle ; handle = ion_handle_get_by_id ( client , data . handle . handle ) ; if ( IS_ERR ( handle ) ) return PTR_ERR ( handle ) ; data . fd . fd = ion_share_dma_buf_fd ( client , handle ) ; ion_handle_put ( handle ) ; if ( data . fd . fd < 0 ) ret = data . fd . fd ; break ; } case ION_IOC_IMPORT : { struct ion_handle * handle ; handle = ion_import_dma_buf_fd ( client , data . fd . fd ) ; if ( IS_ERR ( handle ) ) ret = PTR_ERR ( handle ) ; else data . handle . handle = handle -> id ; break ; } case ION_IOC_SYNC : { ret = ion_sync_for_device ( client , data . fd . fd ) ; break ; } case ION_IOC_CUSTOM : { if ( ! dev -> custom_ioctl ) return - ENOTTY ; ret = dev -> custom_ioctl ( client , data . custom . cmd , data . custom . arg ) ; break ; } default : return - ENOTTY ; } if ( dir & _IOC_READ ) { if ( copy_to_user ( ( void __user * ) arg , & data , _IOC_SIZE ( cmd ) ) ) { if ( cleanup_handle ) ion_free ( client , cleanup_handle ) ; return - EFAULT ; } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * handle ; mutex_lock ( & client -> lock ) ; handle = ion_handle_get_by_id_nolock <S2SV_ModEnd> ( client , <S2SV_ModStart> handle ) ) { mutex_unlock ( & client -> lock ) ; <S2SV_ModStart> handle ) ; } ion_free_nolock ( client , handle ) ; ion_handle_put_nolock ( handle ) ; mutex_unlock ( & client -> lock <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1860\n\n```\nCWE-119 static int wdm_post_reset ( struct usb_interface * intf ) { struct wdm_device * desc = wdm_find_device ( intf ) ; <S2SV_StartBug> int rv ; <S2SV_EndBug> clear_bit ( WDM_RESETTING , & desc -> flags ) ; rv = recover_from_urb_loss ( desc ) ; mutex_unlock ( & desc -> wlock ) ; mutex_unlock ( & desc -> rlock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int rv ; clear_bit ( WDM_OVERFLOW , & desc -> flags )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 void __fput_sync ( struct file * file ) { if ( atomic_long_dec_and_test ( & file -> f_count ) ) { struct task_struct * task = current ; <S2SV_StartBug> file_sb_list_del ( file ) ; <S2SV_EndBug> BUG_ON ( ! ( task -> flags & PF_KTHREAD ) ) ; __fput ( file ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = current ; <S2SV_ModEnd> BUG_ON ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { PadContext * s = inlink -> dst -> priv ; AVFrame * out ; int needs_copy = frame_needs_copy ( s , in ) ; if ( needs_copy ) { av_log ( inlink -> dst , AV_LOG_DEBUG , \"Direct<S2SV_blank>padding<S2SV_blank>impossible<S2SV_blank>allocating<S2SV_blank>new<S2SV_blank>frame\\\\n\" ) ; out = ff_get_video_buffer ( inlink -> dst -> outputs [ 0 ] , FFMAX ( inlink -> w , s -> w ) , FFMAX ( inlink -> h , s -> h ) ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; } else { int i ; out = in ; <S2SV_StartBug> for ( i = 0 ; i < 4 && out -> data [ i ] ; i ++ ) { <S2SV_EndBug> int hsub = s -> draw . hsub [ i ] ; int vsub = s -> draw . vsub [ i ] ; out -> data [ i ] -= ( s -> x >> hsub ) * s -> draw . pixelstep [ i ] + ( s -> y >> vsub ) * out -> linesize [ i ] ; } } if ( s -> y ) { ff_fill_rectangle ( & s -> draw , & s -> color , out -> data , out -> linesize , 0 , 0 , s -> w , s -> y ) ; } if ( s -> h > s -> y + s -> in_h ) { ff_fill_rectangle ( & s -> draw , & s -> color , out -> data , out -> linesize , 0 , s -> y + s -> in_h , s -> w , s -> h - s -> y - s -> in_h ) ; } ff_fill_rectangle ( & s -> draw , & s -> color , out -> data , out -> linesize , 0 , s -> y , s -> x , in -> height ) ; if ( needs_copy ) { ff_copy_rectangle2 ( & s -> draw , out -> data , out -> linesize , in -> data , in -> linesize , s -> x , s -> y , 0 , 0 , in -> width , in -> height ) ; } ff_fill_rectangle ( & s -> draw , & s -> color , out -> data , out -> linesize , s -> x + s -> in_w , s -> y , s -> w - s -> x - s -> in_w , in -> height ) ; out -> width = s -> w ; out -> height = s -> h ; if ( in != out ) av_frame_free ( & in ) ; return ff_filter_frame ( inlink -> dst -> outputs [ 0 ] , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ i ] && out -> linesize [ i ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 int handle_popc ( u32 insn , struct pt_regs * regs ) { u64 value ; int ret , i , rd = ( ( insn >> 25 ) & 0x1f ) ; int from_kernel = ( regs -> tstate & TSTATE_PRIV ) != 0 ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , 0 ) ; <S2SV_EndBug> if ( insn & 0x2000 ) { maybe_flush_windows ( 0 , 0 , rd , from_kernel ) ; value = sign_extend_imm13 ( insn ) ; } else { maybe_flush_windows ( 0 , insn & 0x1f , rd , from_kernel ) ; value = fetch_reg ( insn & 0x1f , regs ) ; } for ( ret = 0 , i = 0 ; i < 16 ; i ++ ) { ret += popc_helper [ value & 0xf ] ; value >>= 4 ; } if ( rd < 16 ) { if ( rd ) regs -> u_regs [ rd ] = ret ; } else { if ( test_thread_flag ( TIF_32BIT ) ) { struct reg_window32 __user * win32 ; win32 = ( struct reg_window32 __user * ) ( ( unsigned long ) ( ( u32 ) regs -> u_regs [ UREG_FP ] ) ) ; put_user ( ret , & win32 -> locals [ rd - 16 ] ) ; } else { struct reg_window __user * win ; win = ( struct reg_window __user * ) ( regs -> u_regs [ UREG_FP ] + STACK_BIAS ) ; put_user ( ret , & win -> locals [ rd - 16 ] ) ; } } advance ( regs ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 int jp2_box_put ( jp2_box_t * box , jas_stream_t * out ) { jas_stream_t * tmpstream ; bool extlen ; bool dataflag ; tmpstream = 0 ; dataflag = ! ( box -> info -> flags & ( JP2_BOX_SUPER | JP2_BOX_NODATA ) ) ; if ( dataflag ) { if ( ! ( tmpstream = jas_stream_memopen ( 0 , 0 ) ) ) { goto error ; } if ( box -> ops -> putdata ) { if ( ( * box -> ops -> putdata ) ( box , tmpstream ) ) { goto error ; } } box -> len = jas_stream_tell ( tmpstream ) + JP2_BOX_HDRLEN ( false ) ; jas_stream_rewind ( tmpstream ) ; } extlen = ( box -> len >= ( ( ( uint_fast64_t ) 1 ) << 32 ) ) != 0 ; if ( jp2_putuint32 ( out , extlen ? 1 : box -> len ) ) { goto error ; } if ( jp2_putuint32 ( out , box -> type ) ) { goto error ; } if ( extlen ) { if ( jp2_putuint64 ( out , box -> len ) ) { goto error ; } } if ( dataflag ) { <S2SV_StartBug> if ( jas_stream_copy ( out , tmpstream , box -> len - JP2_BOX_HDRLEN ( false ) ) ) { <S2SV_EndBug> goto error ; } jas_stream_close ( tmpstream ) ; } return 0 ; error : if ( tmpstream ) { jas_stream_close ( tmpstream ) ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5207\n\n```\nCWE-264 static int do_new_mount ( struct path * path , const char * fstype , int flags , int mnt_flags , const char * name , void * data ) { struct file_system_type * type ; struct user_namespace * user_ns = current -> nsproxy -> mnt_ns -> user_ns ; struct vfsmount * mnt ; int err ; if ( ! fstype ) return - EINVAL ; type = get_fs_type ( fstype ) ; if ( ! type ) return - ENODEV ; if ( user_ns != & init_user_ns ) { if ( ! ( type -> fs_flags & FS_USERNS_MOUNT ) ) { put_filesystem ( type ) ; return - EPERM ; } if ( ! ( type -> fs_flags & FS_USERNS_DEV_MOUNT ) ) { flags |= MS_NODEV ; <S2SV_StartBug> mnt_flags |= MNT_NODEV ; <S2SV_EndBug> } } mnt = vfs_kern_mount ( type , flags , name , data ) ; if ( ! IS_ERR ( mnt ) && ( type -> fs_flags & FS_HAS_SUBTYPE ) && ! mnt -> mnt_sb -> s_subtype ) mnt = fs_set_subtype ( mnt , fstype ) ; put_filesystem ( type ) ; if ( IS_ERR ( mnt ) ) return PTR_ERR ( mnt ) ; err = do_add_mount ( real_mount ( mnt ) , path , mnt_flags ) ; if ( err ) mntput ( mnt ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mnt_flags |= MNT_NODEV | MNT_LOCK_NODEV\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 static void bond_setup ( struct net_device * bond_dev ) { struct bonding * bond = netdev_priv ( bond_dev ) ; rwlock_init ( & bond -> lock ) ; rwlock_init ( & bond -> curr_slave_lock ) ; bond -> params = bonding_defaults ; bond -> dev = bond_dev ; INIT_LIST_HEAD ( & bond -> vlan_list ) ; ether_setup ( bond_dev ) ; bond_dev -> netdev_ops = & bond_netdev_ops ; bond_dev -> ethtool_ops = & bond_ethtool_ops ; bond_set_mode_ops ( bond , bond -> params . mode ) ; bond_dev -> destructor = bond_destructor ; bond_dev -> tx_queue_len = 0 ; bond_dev -> flags |= IFF_MASTER | IFF_MULTICAST ; bond_dev -> priv_flags |= IFF_BONDING ; <S2SV_StartBug> bond_dev -> priv_flags &= ~ IFF_XMIT_DST_RELEASE ; <S2SV_EndBug> bond_dev -> features |= NETIF_F_VLAN_CHALLENGED ; bond_dev -> features |= NETIF_F_LLTX ; bond_dev -> hw_features = BOND_VLAN_FEATURES | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER ; bond_dev -> hw_features &= ~ ( NETIF_F_ALL_CSUM & ~ NETIF_F_NO_CSUM ) ; bond_dev -> features |= bond_dev -> hw_features ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> priv_flags &= ~ ( IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING ) <S2SV_ModEnd> ; bond_dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-601(开放重定向)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14857\n\n```\nCWE-601 static apr_byte_t oidc_validate_post_logout_url ( request_rec * r , const char * url , char * * err_str , char * * err_desc ) { apr_uri_t uri ; const char * c_host = NULL ; if ( apr_uri_parse ( r -> pool , url , & uri ) != APR_SUCCESS ) { * err_str = apr_pstrdup ( r -> pool , \"Malformed<S2SV_blank>URL\" ) ; * err_desc = apr_psprintf ( r -> pool , \"Logout<S2SV_blank>URL<S2SV_blank>malformed:<S2SV_blank>%s\" , url ) ; oidc_error ( r , \"%s:<S2SV_blank>%s\" , * err_str , * err_desc ) ; return FALSE ; } c_host = oidc_get_current_url_host ( r ) ; if ( ( uri . hostname != NULL ) && ( ( strstr ( c_host , uri . hostname ) == NULL ) || ( strstr ( uri . hostname , c_host ) == NULL ) ) ) { * err_str = apr_pstrdup ( r -> pool , \"Invalid<S2SV_blank>Request\" ) ; * err_desc = apr_psprintf ( r -> pool , \"logout<S2SV_blank>value<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>the<S2SV_blank>hostname<S2SV_blank>of<S2SV_blank>the<S2SV_blank>current<S2SV_blank>request<S2SV_blank>\\\\\"%s\\\\\"\" , apr_uri_unparse ( r -> pool , & uri , 0 ) , c_host ) ; oidc_error ( r , \"%s:<S2SV_blank>%s\" , * err_str , * err_desc ) ; return FALSE ; <S2SV_StartBug> } else if ( strstr ( url , \"/\" ) != url ) { <S2SV_EndBug> * err_str = apr_pstrdup ( r -> pool , \"Malformed<S2SV_blank>URL\" ) ; * err_desc = apr_psprintf ( r -> pool , \"No<S2SV_blank>hostname<S2SV_blank>was<S2SV_blank>parsed<S2SV_blank>and<S2SV_blank>it<S2SV_blank>does<S2SV_blank>not<S2SV_blank>seem<S2SV_blank>to<S2SV_blank>be<S2SV_blank>relative,<S2SV_blank>i.e<S2SV_blank>starting<S2SV_blank>with<S2SV_blank>\\'/\\':<S2SV_blank>%s\" , url ) ; oidc_error ( r , \"%s:<S2SV_blank>%s\" , * err_str , * err_desc ) ; return FALSE ; } if ( ( ( strstr ( url , \"\\\\n\" ) != NULL ) || strstr ( url , \"\\\\r\" ) != NULL ) ) { * err_str = apr_pstrdup ( r -> pool , \"Invalid<S2SV_blank>Request\" ) ; * err_desc = apr_psprintf ( r -> pool , \"logout<S2SV_blank>value<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>contains<S2SV_blank>illegal<S2SV_blank>\\\\\"\\\\n\\\\\"<S2SV_blank>or<S2SV_blank>\\\\\"\\\\r\\\\\"<S2SV_blank>character(s)\" , url ) ; oidc_error ( r , \"%s:<S2SV_blank>%s\" , * err_str , * err_desc ) ; return FALSE ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> else if ( ( uri . hostname == NULL ) && ( <S2SV_ModStart> != url ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1943\n\n```\nCWE-20 int kvm_read_guest_page ( struct kvm * kvm , gfn_t gfn , void * data , int offset , int len ) { int r ; unsigned long addr ; addr = gfn_to_hva ( kvm , gfn ) ; if ( kvm_is_error_hva ( addr ) ) return - EFAULT ; <S2SV_StartBug> r = copy_from_user ( data , ( void __user * ) addr + offset , len ) ; <S2SV_EndBug> if ( r ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; r = __copy_from_user <S2SV_ModEnd> ( data ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 static void perf_remove_from_owner ( struct perf_event * event ) { struct task_struct * owner ; rcu_read_lock ( ) ; owner = ACCESS_ONCE ( event -> owner ) ; smp_read_barrier_depends ( ) ; if ( owner ) { get_task_struct ( owner ) ; } rcu_read_unlock ( ) ; if ( owner ) { <S2SV_StartBug> mutex_lock ( & owner -> perf_event_mutex ) ; <S2SV_EndBug> if ( event -> owner ) list_del_init ( & event -> owner_entry ) ; mutex_unlock ( & owner -> perf_event_mutex ) ; put_task_struct ( owner ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> owner ) { mutex_lock_nested <S2SV_ModEnd> ( & owner <S2SV_ModStart> owner -> perf_event_mutex , SINGLE_DEPTH_NESTING\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static int check_entry_size_and_hooks ( struct ipt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ipt_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct ipt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ipt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { <S2SV_StartBug> pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" <S2SV_EndBug> \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { pr_debug <S2SV_ModEnd> ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><infile><S2SV_blank><outfile>\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2636\n\n```\nCWE-399 static int nlmsg_populate_mdb_fill ( struct sk_buff * skb , struct net_device * dev , struct br_mdb_entry * entry , u32 pid , u32 seq , int type , unsigned int flags ) { struct nlmsghdr * nlh ; struct br_port_msg * bpm ; struct nlattr * nest , * nest2 ; nlh = nlmsg_put ( skb , pid , seq , type , sizeof ( * bpm ) , NLM_F_MULTI ) ; if ( ! nlh ) return - EMSGSIZE ; bpm = nlmsg_data ( nlh ) ; <S2SV_StartBug> bpm -> family = AF_BRIDGE ; <S2SV_EndBug> bpm -> ifindex = dev -> ifindex ; nest = nla_nest_start ( skb , MDBA_MDB ) ; if ( nest == NULL ) goto cancel ; nest2 = nla_nest_start ( skb , MDBA_MDB_ENTRY ) ; if ( nest2 == NULL ) goto end ; if ( nla_put ( skb , MDBA_MDB_ENTRY_INFO , sizeof ( * entry ) , entry ) ) goto end ; nla_nest_end ( skb , nest2 ) ; nla_nest_end ( skb , nest ) ; return nlmsg_end ( skb , nlh ) ; end : nla_nest_end ( skb , nest ) ; cancel : nlmsg_cancel ( skb , nlh ) ; return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nlh ) ; memset ( bpm , 0 , sizeof ( * bpm ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5375\n\n```\nCWE-310 static int btrfs_rename ( struct inode * old_dir , struct dentry * old_dentry , struct inode * new_dir , struct dentry * new_dentry ) { struct btrfs_trans_handle * trans ; struct btrfs_root * root = BTRFS_I ( old_dir ) -> root ; struct btrfs_root * dest = BTRFS_I ( new_dir ) -> root ; struct inode * new_inode = new_dentry -> d_inode ; struct inode * old_inode = old_dentry -> d_inode ; struct timespec ctime = CURRENT_TIME ; u64 index = 0 ; u64 root_objectid ; int ret ; u64 old_ino = btrfs_ino ( old_inode ) ; if ( btrfs_ino ( new_dir ) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID ) return - EPERM ; if ( old_ino != BTRFS_FIRST_FREE_OBJECTID && root != dest ) return - EXDEV ; if ( old_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID || ( new_inode && btrfs_ino ( new_inode ) == BTRFS_FIRST_FREE_OBJECTID ) ) return - ENOTEMPTY ; if ( S_ISDIR ( old_inode -> i_mode ) && new_inode && new_inode -> i_size > BTRFS_EMPTY_DIR_SIZE ) return - ENOTEMPTY ; <S2SV_StartBug> if ( new_inode && S_ISREG ( old_inode -> i_mode ) && new_inode -> i_size && <S2SV_EndBug> old_inode -> i_size > BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT ) filemap_flush ( old_inode -> i_mapping ) ; if ( old_ino == BTRFS_FIRST_FREE_OBJECTID ) down_read ( & root -> fs_info -> subvol_sem ) ; trans = btrfs_start_transaction ( root , 20 ) ; if ( IS_ERR ( trans ) ) { ret = PTR_ERR ( trans ) ; goto out_notrans ; } if ( dest != root ) btrfs_record_root_in_trans ( trans , dest ) ; ret = btrfs_set_inode_index ( new_dir , & index ) ; if ( ret ) goto out_fail ; if ( unlikely ( old_ino == BTRFS_FIRST_FREE_OBJECTID ) ) { root -> fs_info -> last_trans_log_full_commit = trans -> transid ; } else { ret = btrfs_insert_inode_ref ( trans , dest , new_dentry -> d_name . name , new_dentry -> d_name . len , old_ino , btrfs_ino ( new_dir ) , index ) ; if ( ret ) goto out_fail ; btrfs_pin_log_trans ( root ) ; } if ( new_inode && new_inode -> i_size && S_ISREG ( old_inode -> i_mode ) ) btrfs_add_ordered_operation ( trans , root , old_inode ) ; inode_inc_iversion ( old_dir ) ; inode_inc_iversion ( new_dir ) ; inode_inc_iversion ( old_inode ) ; old_dir -> i_ctime = old_dir -> i_mtime = ctime ; new_dir -> i_ctime = new_dir -> i_mtime = ctime ; old_inode -> i_ctime = ctime ; if ( old_dentry -> d_parent != new_dentry -> d_parent ) btrfs_record_unlink_dir ( trans , old_dir , old_inode , 1 ) ; if ( unlikely ( old_ino == BTRFS_FIRST_FREE_OBJECTID ) ) { root_objectid = BTRFS_I ( old_inode ) -> root -> root_key . objectid ; ret = btrfs_unlink_subvol ( trans , root , old_dir , root_objectid , old_dentry -> d_name . name , old_dentry -> d_name . len ) ; } else { ret = __btrfs_unlink_inode ( trans , root , old_dir , old_dentry -> d_inode , old_dentry -> d_name . name , old_dentry -> d_name . len ) ; if ( ! ret ) ret = btrfs_update_inode ( trans , root , old_inode ) ; } if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto out_fail ; } if ( new_inode ) { inode_inc_iversion ( new_inode ) ; new_inode -> i_ctime = CURRENT_TIME ; if ( unlikely ( btrfs_ino ( new_inode ) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID ) ) { root_objectid = BTRFS_I ( new_inode ) -> location . objectid ; ret = btrfs_unlink_subvol ( trans , dest , new_dir , root_objectid , new_dentry -> d_name . name , new_dentry -> d_name . len ) ; BUG_ON ( new_inode -> i_nlink == 0 ) ; } else { ret = btrfs_unlink_inode ( trans , dest , new_dir , new_dentry -> d_inode , new_dentry -> d_name . name , new_dentry -> d_name . len ) ; } if ( ! ret && new_inode -> i_nlink == 0 ) { ret = btrfs_orphan_add ( trans , new_dentry -> d_inode ) ; BUG_ON ( ret ) ; } if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto out_fail ; } } fixup_inode_flags ( new_dir , old_inode ) ; ret = btrfs_add_link ( trans , new_dir , old_inode , new_dentry -> d_name . name , new_dentry -> d_name . len , 0 , index ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto out_fail ; } if ( old_ino != BTRFS_FIRST_FREE_OBJECTID ) { struct dentry * parent = new_dentry -> d_parent ; btrfs_log_new_name ( trans , old_inode , old_dir , parent ) ; btrfs_end_log_trans ( root ) ; } out_fail : btrfs_end_transaction ( trans , root ) ; out_notrans : if ( old_ino == BTRFS_FIRST_FREE_OBJECTID ) up_read ( & root -> fs_info -> subvol_sem ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOTEMPTY ; ret = btrfs_check_dir_item_collision ( root , new_dir -> i_ino , new_dentry -> d_name . name , new_dentry -> d_name . len ) ; if ( ret ) { if ( ret == - EEXIST ) { if ( ! new_inode ) { WARN_ON ( 1 ) ; return ret ; } } else { return ret ; } } ret = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0006\n\n```\nCWE-264 static int ima_lsm_rule_init ( struct ima_measure_rule_entry * entry , char * args , int lsm_rule , int audit_type ) { int result ; if ( entry -> lsm [ lsm_rule ] . rule ) return - EINVAL ; entry -> lsm [ lsm_rule ] . type = audit_type ; result = security_filter_rule_init ( entry -> lsm [ lsm_rule ] . type , Audit_equal , args , & entry -> lsm [ lsm_rule ] . rule ) ; <S2SV_StartBug> return result ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rule ) ; if ( ! entry -> lsm [ lsm_rule ] . rule ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void encode_frame_to_data_rate ( VP8_COMP * cpi , unsigned long * size , unsigned char * dest , unsigned char * dest_end , unsigned int * frame_flags ) { int Q ; int frame_over_shoot_limit ; int frame_under_shoot_limit ; int Loop = 0 ; int loop_count ; VP8_COMMON * cm = & cpi -> common ; int active_worst_qchanged = 0 ; # if ! ( CONFIG_REALTIME_ONLY ) int q_low ; int q_high ; int zbin_oq_high ; int zbin_oq_low = 0 ; int top_index ; int bottom_index ; int overshoot_seen = 0 ; int undershoot_seen = 0 ; # endif int drop_mark = ( int ) ( cpi -> oxcf . drop_frames_water_mark * cpi -> oxcf . optimal_buffer_level / 100 ) ; int drop_mark75 = drop_mark * 2 / 3 ; int drop_mark50 = drop_mark / 4 ; int drop_mark25 = drop_mark / 8 ; vp8_clear_system_state ( ) ; # if CONFIG_MULTITHREAD if ( cpi -> b_lpf_running ) { sem_wait ( & cpi -> h_event_end_lpf ) ; cpi -> b_lpf_running = 0 ; } # endif if ( cpi -> force_next_frame_intra ) { cm -> frame_type = KEY_FRAME ; cpi -> force_next_frame_intra = 0 ; } # if ! ( CONFIG_REALTIME_ONLY ) if ( cpi -> pass == 2 ) { if ( cpi -> common . refresh_alt_ref_frame ) { cpi -> per_frame_bandwidth = cpi -> twopass . gf_bits ; cpi -> target_bandwidth = ( int ) ( cpi -> twopass . gf_bits * cpi -> output_framerate ) ; } } else # endif cpi -> per_frame_bandwidth = ( int ) ( cpi -> target_bandwidth / cpi -> output_framerate ) ; cm -> copy_buffer_to_gf = 0 ; cm -> copy_buffer_to_arf = 0 ; cpi -> mb . zbin_over_quant = 0 ; cpi -> mb . zbin_mode_boost = 0 ; cpi -> mb . zbin_mode_boost_enabled = 1 ; if ( cpi -> pass == 2 ) { if ( cpi -> gfu_boost <= 400 ) { cpi -> mb . zbin_mode_boost_enabled = 0 ; } } if ( cpi -> source_alt_ref_active ) cpi -> common . ref_frame_sign_bias [ ALTREF_FRAME ] = 1 ; else cpi -> common . ref_frame_sign_bias [ ALTREF_FRAME ] = 0 ; if ( ( cm -> current_video_frame == 0 ) || ( cm -> frame_flags & FRAMEFLAGS_KEY ) || ( cpi -> oxcf . auto_key && ( cpi -> frames_since_key % cpi -> key_frame_frequency == 0 ) ) ) { cm -> frame_type = KEY_FRAME ; <S2SV_StartBug> } <S2SV_EndBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_StartBug> if ( cpi -> oxcf . mr_encoder_id ) <S2SV_EndBug> { LOWER_RES_FRAME_INFO * low_res_frame_info <S2SV_StartBug> = ( LOWER_RES_FRAME_INFO * ) cpi -> oxcf . mr_low_res_mode_info ; <S2SV_EndBug> cm -> frame_type = low_res_frame_info -> frame_type ; if ( cm -> frame_type != KEY_FRAME ) { cpi -> mr_low_res_mv_avail = 1 ; cpi -> mr_low_res_mv_avail &= ! ( low_res_frame_info -> is_frame_dropped ) ; if ( cpi -> ref_frame_flags & VP8_LAST_FRAME ) cpi -> mr_low_res_mv_avail &= ( cpi -> current_ref_frames [ LAST_FRAME ] == low_res_frame_info -> low_res_ref_frames [ LAST_FRAME ] ) ; if ( cpi -> ref_frame_flags & VP8_GOLD_FRAME ) cpi -> mr_low_res_mv_avail &= ( cpi -> current_ref_frames [ GOLDEN_FRAME ] == low_res_frame_info -> low_res_ref_frames [ GOLDEN_FRAME ] ) ; <S2SV_StartBug> if ( cpi -> ref_frame_flags & VP8_ALTR_FRAME ) <S2SV_EndBug> <S2SV_StartBug> cpi -> mr_low_res_mv_avail &= ( cpi -> current_ref_frames [ ALTREF_FRAME ] <S2SV_EndBug> == low_res_frame_info -> low_res_ref_frames [ ALTREF_FRAME ] ) ; } } # endif if ( cm -> frame_type == KEY_FRAME ) { int i ; setup_features ( cpi ) ; cpi -> source_alt_ref_active = 0 ; for ( i = 0 ; i < MAX_MODES ; i ++ ) { cpi -> mb . rd_thresh_mult [ i ] = 128 ; <S2SV_StartBug> } <S2SV_EndBug> } # if 0 { cpi -> one_pass_frame_index = cm -> current_video_frame % MAX_LAG_BUFFERS ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frames_so_far = 0 ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_intra_error = 0.0 ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_coded_error = 0.0 ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_pcnt_inter = 0.0 ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_pcnt_motion = 0.0 ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_mvr = 0.0 ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_mvr_abs = 0.0 ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_mvc = 0.0 ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_mvc_abs = 0.0 ; } # endif update_rd_ref_frame_probs ( cpi ) ; if ( cpi -> drop_frames_allowed ) { if ( ( cpi -> buffer_level > drop_mark ) && ( cpi -> decimation_factor > 0 ) ) cpi -> decimation_factor -- ; if ( cpi -> buffer_level > drop_mark75 && cpi -> decimation_factor > 0 ) cpi -> decimation_factor = 1 ; else if ( cpi -> buffer_level < drop_mark25 && ( cpi -> decimation_factor == 2 || cpi -> decimation_factor == 3 ) ) { cpi -> decimation_factor = 3 ; } else if ( cpi -> buffer_level < drop_mark50 && ( cpi -> decimation_factor == 1 || cpi -> decimation_factor == 2 ) ) { cpi -> decimation_factor = 2 ; } else if ( cpi -> buffer_level < drop_mark75 && ( cpi -> decimation_factor == 0 || cpi -> decimation_factor == 1 ) ) { cpi -> decimation_factor = 1 ; } } if ( cpi -> decimation_factor > 0 ) { switch ( cpi -> decimation_factor ) { case 1 : cpi -> per_frame_bandwidth = cpi -> per_frame_bandwidth * 3 / 2 ; break ; case 2 : cpi -> per_frame_bandwidth = cpi -> per_frame_bandwidth * 5 / 4 ; break ; case 3 : cpi -> per_frame_bandwidth = cpi -> per_frame_bandwidth * 5 / 4 ; break ; } if ( cm -> frame_type == KEY_FRAME ) { cpi -> decimation_count = cpi -> decimation_factor ; } else if ( cpi -> decimation_count > 0 ) { cpi -> decimation_count -- ; cpi -> bits_off_target += cpi -> av_per_frame_bandwidth ; if ( cpi -> bits_off_target > cpi -> oxcf . maximum_buffer_size ) cpi -> bits_off_target = cpi -> oxcf . maximum_buffer_size ; # if CONFIG_MULTI_RES_ENCODING vp8_store_drop_frame_info ( cpi ) ; # endif cm -> current_video_frame ++ ; cpi -> frames_since_key ++ ; cpi -> temporal_pattern_counter ++ ; # if CONFIG_INTERNAL_STATS cpi -> count ++ ; # endif cpi -> buffer_level = cpi -> bits_off_target ; if ( cpi -> oxcf . number_of_layers > 1 ) { unsigned int i ; for ( i = cpi -> current_layer + 1 ; i < cpi -> oxcf . number_of_layers ; i ++ ) { LAYER_CONTEXT * lc = & cpi -> layer_context [ i ] ; lc -> bits_off_target += ( int ) ( lc -> target_bandwidth / lc -> framerate ) ; if ( lc -> bits_off_target > lc -> maximum_buffer_size ) lc -> bits_off_target = lc -> maximum_buffer_size ; lc -> buffer_level = lc -> bits_off_target ; } } return ; } else cpi -> decimation_count = cpi -> decimation_factor ; } else cpi -> decimation_count = 0 ; if ( ! vp8_pick_frame_size ( cpi ) ) { # if CONFIG_MULTI_RES_ENCODING vp8_store_drop_frame_info ( cpi ) ; # endif cm -> current_video_frame ++ ; cpi -> frames_since_key ++ ; cpi -> temporal_pattern_counter ++ ; return ; } if ( ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) && ( cpi -> buffer_level >= cpi -> oxcf . optimal_buffer_level ) && cpi -> buffered_mode ) { int Adjustment = cpi -> active_worst_quality / 4 ; if ( Adjustment ) { int buff_lvl_step ; if ( cpi -> buffer_level < cpi -> oxcf . maximum_buffer_size ) { buff_lvl_step = ( int ) ( ( cpi -> oxcf . maximum_buffer_size - cpi -> oxcf . optimal_buffer_level ) / Adjustment ) ; if ( buff_lvl_step ) Adjustment = ( int ) ( ( cpi -> buffer_level - cpi -> oxcf . optimal_buffer_level ) / buff_lvl_step ) ; else Adjustment = 0 ; } cpi -> active_worst_quality -= Adjustment ; if ( cpi -> active_worst_quality < cpi -> active_best_quality ) cpi -> active_worst_quality = cpi -> active_best_quality ; } } if ( ( cpi -> pass == 2 ) || ( cpi -> ni_frames > 150 ) ) { vp8_clear_system_state ( ) ; Q = cpi -> active_worst_quality ; if ( cm -> frame_type == KEY_FRAME ) { if ( cpi -> pass == 2 ) { if ( cpi -> gfu_boost > 600 ) cpi -> active_best_quality = kf_low_motion_minq [ Q ] ; else cpi -> active_best_quality = kf_high_motion_minq [ Q ] ; if ( cpi -> this_key_frame_forced ) { if ( cpi -> active_best_quality > cpi -> avg_frame_qindex * 7 / 8 ) cpi -> active_best_quality = cpi -> avg_frame_qindex * 7 / 8 ; else if ( cpi -> active_best_quality < cpi -> avg_frame_qindex >> 2 ) cpi -> active_best_quality = cpi -> avg_frame_qindex >> 2 ; } } else cpi -> active_best_quality = kf_high_motion_minq [ Q ] ; } else if ( cpi -> oxcf . number_of_layers == 1 && ( cm -> refresh_golden_frame || cpi -> common . refresh_alt_ref_frame ) ) { if ( ( cpi -> frames_since_key > 1 ) && ( cpi -> avg_frame_qindex < cpi -> active_worst_quality ) ) { Q = cpi -> avg_frame_qindex ; } if ( ( cpi -> oxcf . end_usage == USAGE_CONSTRAINED_QUALITY ) && ( Q < cpi -> cq_target_quality ) ) { Q = cpi -> cq_target_quality ; } if ( cpi -> pass == 2 ) { if ( cpi -> gfu_boost > 1000 ) cpi -> active_best_quality = gf_low_motion_minq [ Q ] ; else if ( cpi -> gfu_boost < 400 ) cpi -> active_best_quality = gf_high_motion_minq [ Q ] ; else cpi -> active_best_quality = gf_mid_motion_minq [ Q ] ; if ( cpi -> oxcf . end_usage == USAGE_CONSTRAINED_QUALITY ) { cpi -> active_best_quality = cpi -> active_best_quality * 15 / 16 ; } } else cpi -> active_best_quality = gf_high_motion_minq [ Q ] ; } else { cpi -> active_best_quality = inter_minq [ Q ] ; if ( ( cpi -> oxcf . end_usage == USAGE_CONSTRAINED_QUALITY ) && ( cpi -> active_best_quality < cpi -> cq_target_quality ) ) { if ( cpi -> rolling_actual_bits < cpi -> min_frame_bandwidth ) cpi -> active_best_quality = cpi -> oxcf . cq_level ; else cpi -> active_best_quality = cpi -> cq_target_quality ; } } if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { if ( cpi -> buffer_level >= cpi -> oxcf . maximum_buffer_size ) cpi -> active_best_quality = cpi -> best_quality ; else if ( cpi -> buffer_level > cpi -> oxcf . optimal_buffer_level ) { int Fraction = ( int ) ( ( ( cpi -> buffer_level - cpi -> oxcf . optimal_buffer_level ) * 128 ) / ( cpi -> oxcf . maximum_buffer_size - cpi -> oxcf . optimal_buffer_level ) ) ; int min_qadjustment = ( ( cpi -> active_best_quality - cpi -> best_quality ) * Fraction ) / 128 ; cpi -> active_best_quality -= min_qadjustment ; } } } else if ( cpi -> oxcf . end_usage == USAGE_CONSTRAINED_QUALITY ) { if ( ( cm -> frame_type == KEY_FRAME ) || cm -> refresh_golden_frame || cpi -> common . refresh_alt_ref_frame ) { cpi -> active_best_quality = cpi -> best_quality ; } else if ( cpi -> active_best_quality < cpi -> cq_target_quality ) { cpi -> active_best_quality = cpi -> cq_target_quality ; } } if ( cpi -> active_worst_quality > cpi -> worst_quality ) cpi -> active_worst_quality = cpi -> worst_quality ; if ( cpi -> active_best_quality < cpi -> best_quality ) cpi -> active_best_quality = cpi -> best_quality ; if ( cpi -> active_worst_quality < cpi -> active_best_quality ) cpi -> active_worst_quality = cpi -> active_best_quality ; Q = vp8_regulate_q ( cpi , cpi -> this_frame_target ) ; # if ! ( CONFIG_REALTIME_ONLY ) if ( cm -> frame_type == KEY_FRAME ) zbin_oq_high = 0 ; else if ( ( cpi -> oxcf . number_of_layers == 1 ) && ( ( cm -> refresh_alt_ref_frame || ( cm -> refresh_golden_frame && ! cpi -> source_alt_ref_active ) ) ) ) { zbin_oq_high = 16 ; } else zbin_oq_high = ZBIN_OQ_MAX ; # endif if ( cpi -> cyclic_refresh_mode_enabled ) { <S2SV_StartBug> if ( cpi -> current_layer == 0 ) <S2SV_EndBug> cyclic_background_refresh ( cpi , Q , 0 ) ; else disable_segmentation ( cpi ) ; } vp8_compute_frame_size_bounds ( cpi , & frame_under_shoot_limit , & frame_over_shoot_limit ) ; # if ! ( CONFIG_REALTIME_ONLY ) bottom_index = cpi -> active_best_quality ; top_index = cpi -> active_worst_quality ; q_low = cpi -> active_best_quality ; q_high = cpi -> active_worst_quality ; # endif vp8_save_coding_context ( cpi ) ; loop_count = 0 ; <S2SV_StartBug> scale_and_extend_source ( cpi -> un_scaled_source , cpi ) ; <S2SV_EndBug> # if ! ( CONFIG_REALTIME_ONLY ) && CONFIG_POSTPROC && ! ( CONFIG_TEMPORAL_DENOISING ) if ( cpi -> oxcf . noise_sensitivity > 0 ) { unsigned char * src ; int l = 0 ; switch ( cpi -> oxcf . noise_sensitivity ) { case 1 : l = 20 ; break ; case 2 : l = 40 ; break ; case 3 : l = 60 ; break ; case 4 : l = 80 ; break ; case 5 : l = 100 ; break ; case 6 : l = 150 ; break ; } if ( cm -> frame_type == KEY_FRAME ) { <S2SV_StartBug> vp8_de_noise ( cm , cpi -> Source , cpi -> Source , l , 1 , 0 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> vp8_de_noise ( cm , cpi -> Source , cpi -> Source , l , 1 , 0 ) ; <S2SV_EndBug> src = cpi -> Source -> y_buffer ; if ( cpi -> Source -> y_stride < 0 ) { src += cpi -> Source -> y_stride * ( cpi -> Source -> y_height - 1 ) ; } } } # endif # ifdef OUTPUT_YUV_SRC <S2SV_StartBug> vp8_write_yuv_frame ( cpi -> Source ) ; <S2SV_EndBug> # endif do { vp8_clear_system_state ( ) ; vp8_set_quantizer ( cpi , Q ) ; if ( cpi -> common . mb_no_coeff_skip ) { cpi -> prob_skip_false = cpi -> base_skip_false_prob [ Q ] ; if ( cm -> frame_type != KEY_FRAME ) { if ( cpi -> common . refresh_alt_ref_frame ) { if ( cpi -> last_skip_false_probs [ 2 ] != 0 ) cpi -> prob_skip_false = cpi -> last_skip_false_probs [ 2 ] ; } else if ( cpi -> common . refresh_golden_frame ) { if ( cpi -> last_skip_false_probs [ 1 ] != 0 ) cpi -> prob_skip_false = cpi -> last_skip_false_probs [ 1 ] ; } else { if ( cpi -> last_skip_false_probs [ 0 ] != 0 ) cpi -> prob_skip_false = cpi -> last_skip_false_probs [ 0 ] ; } if ( cpi -> prob_skip_false < 5 ) cpi -> prob_skip_false = 5 ; if ( cpi -> prob_skip_false > 250 ) cpi -> prob_skip_false = 250 ; if ( cpi -> oxcf . number_of_layers == 1 && cpi -> is_src_frame_alt_ref ) cpi -> prob_skip_false = 1 ; } # if 0 if ( cpi -> pass != 1 ) { FILE * f = fopen ( \"skip.stt\" , \"a\" ) ; fprintf ( f , \"%d,<S2SV_blank>%d,<S2SV_blank>%4d<S2SV_blank>\" , cpi -> common . refresh_golden_frame , cpi -> common . refresh_alt_ref_frame , cpi -> prob_skip_false ) ; fclose ( f ) ; } # endif } if ( cm -> frame_type == KEY_FRAME ) { if ( resize_key_frame ( cpi ) ) { Q = vp8_regulate_q ( cpi , cpi -> this_frame_target ) ; if ( cpi -> cyclic_refresh_mode_enabled ) { if ( cpi -> current_layer == 0 ) cyclic_background_refresh ( cpi , Q , 0 ) ; else disable_segmentation ( cpi ) ; } <S2SV_StartBug> vp8_set_quantizer ( cpi , Q ) ; <S2SV_EndBug> } vp8_setup_key_frame ( cpi ) ; } # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING { if ( cpi -> oxcf . error_resilient_mode ) cm -> refresh_entropy_probs = 0 ; if ( cpi -> oxcf . error_resilient_mode & VPX_ERROR_RESILIENT_PARTITIONS ) { if ( cm -> frame_type == KEY_FRAME ) cm -> refresh_entropy_probs = 1 ; } if ( cm -> refresh_entropy_probs == 0 ) { <S2SV_StartBug> vpx_memcpy ( & cm -> lfc , & cm -> fc , sizeof ( cm -> fc ) ) ; <S2SV_EndBug> } vp8_update_coef_context ( cpi ) ; vp8_update_coef_probs ( cpi ) ; vp8_encode_frame ( cpi ) ; } # else <S2SV_StartBug> vp8_encode_frame ( cpi ) ; <S2SV_EndBug> cpi -> projected_frame_size -= vp8_estimate_entropy_savings ( cpi ) ; cpi -> projected_frame_size = ( cpi -> projected_frame_size > 0 ) ? cpi -> projected_frame_size : 0 ; # endif vp8_clear_system_state ( ) ; if ( cpi -> pass != 2 && cpi -> oxcf . auto_key && cm -> frame_type != KEY_FRAME && cpi -> compressor_speed != 2 ) { # if ! ( CONFIG_REALTIME_ONLY ) if ( decide_key_frame ( cpi ) ) { cm -> frame_type = KEY_FRAME ; vp8_pick_frame_size ( cpi ) ; cpi -> source_alt_ref_active = 0 ; setup_features ( cpi ) ; vp8_restore_coding_context ( cpi ) ; Q = vp8_regulate_q ( cpi , cpi -> this_frame_target ) ; vp8_compute_frame_size_bounds ( cpi , & frame_under_shoot_limit , & frame_over_shoot_limit ) ; bottom_index = cpi -> active_best_quality ; top_index = cpi -> active_worst_quality ; q_low = cpi -> active_best_quality ; q_high = cpi -> active_worst_quality ; loop_count ++ ; Loop = 1 ; continue ; } # endif } vp8_clear_system_state ( ) ; if ( frame_over_shoot_limit == 0 ) frame_over_shoot_limit = 1 ; if ( ( ( cpi -> pass != 2 ) || ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) ) && ( Q == cpi -> active_worst_quality ) && ( cpi -> active_worst_quality < cpi -> worst_quality ) && ( cpi -> projected_frame_size > frame_over_shoot_limit ) ) { int over_size_percent = ( ( cpi -> projected_frame_size - frame_over_shoot_limit ) * 100 ) / frame_over_shoot_limit ; while ( ( cpi -> active_worst_quality < cpi -> worst_quality ) && ( over_size_percent > 0 ) ) { cpi -> active_worst_quality ++ ; over_size_percent = ( int ) ( over_size_percent * 0.96 ) ; } # if ! ( CONFIG_REALTIME_ONLY ) top_index = cpi -> active_worst_quality ; # endif active_worst_qchanged = 1 ; } else active_worst_qchanged = 0 ; # if ! ( CONFIG_REALTIME_ONLY ) if ( ( cm -> frame_type == KEY_FRAME ) && cpi -> this_key_frame_forced ) { int last_q = Q ; int kf_err = vp8_calc_ss_err ( cpi -> Source , & cm -> yv12_fb [ cm -> new_fb_idx ] ) ; if ( kf_err > ( ( cpi -> ambient_err * 7 ) >> 3 ) ) { q_high = ( Q > q_low ) ? ( Q - 1 ) : q_low ; Q = ( q_high + q_low ) >> 1 ; } else if ( kf_err < ( cpi -> ambient_err >> 1 ) ) { q_low = ( Q < q_high ) ? ( Q + 1 ) : q_high ; Q = ( q_high + q_low + 1 ) >> 1 ; } if ( Q > q_high ) Q = q_high ; else if ( Q < q_low ) Q = q_low ; Loop = Q != last_q ; } else if ( recode_loop_test ( cpi , frame_over_shoot_limit , frame_under_shoot_limit , Q , top_index , bottom_index ) ) { int last_q = Q ; int Retries = 0 ; if ( cpi -> projected_frame_size > cpi -> this_frame_target ) { q_low = ( Q < q_high ) ? ( Q + 1 ) : q_high ; if ( cpi -> mb . zbin_over_quant > 0 ) zbin_oq_low = ( cpi -> mb . zbin_over_quant < zbin_oq_high ) ? ( cpi -> mb . zbin_over_quant + 1 ) : zbin_oq_high ; if ( undershoot_seen ) { if ( ! active_worst_qchanged ) vp8_update_rate_correction_factors ( cpi , 1 ) ; Q = ( q_high + q_low + 1 ) / 2 ; if ( Q < MAXQ ) cpi -> mb . zbin_over_quant = 0 ; else { zbin_oq_low = ( cpi -> mb . zbin_over_quant < zbin_oq_high ) ? ( cpi -> mb . zbin_over_quant + 1 ) : zbin_oq_high ; cpi -> mb . zbin_over_quant = ( zbin_oq_high + zbin_oq_low ) / 2 ; } } else { if ( ! active_worst_qchanged ) vp8_update_rate_correction_factors ( cpi , 0 ) ; Q = vp8_regulate_q ( cpi , cpi -> this_frame_target ) ; while ( ( ( Q < q_low ) || ( cpi -> mb . zbin_over_quant < zbin_oq_low ) ) && ( Retries < 10 ) ) { vp8_update_rate_correction_factors ( cpi , 0 ) ; Q = vp8_regulate_q ( cpi , cpi -> this_frame_target ) ; Retries ++ ; } } overshoot_seen = 1 ; } else { if ( cpi -> mb . zbin_over_quant == 0 ) q_high = ( Q > q_low ) ? ( Q - 1 ) : q_low ; else zbin_oq_high = ( cpi -> mb . zbin_over_quant > zbin_oq_low ) ? ( cpi -> mb . zbin_over_quant - 1 ) : zbin_oq_low ; if ( overshoot_seen ) { if ( ! active_worst_qchanged ) vp8_update_rate_correction_factors ( cpi , 1 ) ; Q = ( q_high + q_low ) / 2 ; if ( Q < MAXQ ) cpi -> mb . zbin_over_quant = 0 ; else cpi -> mb . zbin_over_quant = ( zbin_oq_high + zbin_oq_low ) / 2 ; } else { if ( ! active_worst_qchanged ) vp8_update_rate_correction_factors ( cpi , 0 ) ; Q = vp8_regulate_q ( cpi , cpi -> this_frame_target ) ; if ( ( cpi -> oxcf . end_usage == USAGE_CONSTRAINED_QUALITY ) && ( Q < q_low ) ) { q_low = Q ; } while ( ( ( Q > q_high ) || ( cpi -> mb . zbin_over_quant > zbin_oq_high ) ) && ( Retries < 10 ) ) { vp8_update_rate_correction_factors ( cpi , 0 ) ; Q = vp8_regulate_q ( cpi , cpi -> this_frame_target ) ; Retries ++ ; } } undershoot_seen = 1 ; } if ( Q > q_high ) Q = q_high ; else if ( Q < q_low ) Q = q_low ; cpi -> mb . zbin_over_quant = ( cpi -> mb . zbin_over_quant < zbin_oq_low ) ? zbin_oq_low : ( cpi -> mb . zbin_over_quant > zbin_oq_high ) ? zbin_oq_high : cpi -> mb . zbin_over_quant ; Loop = Q != last_q ; } else # endif Loop = 0 ; if ( cpi -> is_src_frame_alt_ref ) Loop = 0 ; if ( Loop == 1 ) { vp8_restore_coding_context ( cpi ) ; loop_count ++ ; # if CONFIG_INTERNAL_STATS cpi -> tot_recode_hits ++ ; # endif } } while ( Loop == 1 ) ; # if 0 { cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_coded_error = ( double ) cpi -> prediction_error ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_intra_error = ( double ) cpi -> intra_error ; cpi -> one_pass_frame_stats [ cpi -> one_pass_frame_index ] . frame_pcnt_inter = ( double ) ( 100 - cpi -> this_frame_percent_intra ) / 100.0 ; } # endif if ( cpi -> next_key_frame_forced && ( cpi -> twopass . frames_to_key == 0 ) ) { cpi -> ambient_err = vp8_calc_ss_err ( cpi -> Source , & cm -> yv12_fb [ cm -> new_fb_idx ] ) ; } # if CONFIG_MULTI_RES_ENCODING if ( ! cpi -> oxcf . mr_encoder_id && cm -> show_frame ) # else if ( cm -> show_frame ) # endif { int mb_row ; int mb_col ; MODE_INFO * tmp = cm -> mip ; if ( cm -> frame_type != KEY_FRAME ) { for ( mb_row = 0 ; mb_row < cm -> mb_rows + 1 ; mb_row ++ ) { for ( mb_col = 0 ; mb_col < cm -> mb_cols + 1 ; mb_col ++ ) { if ( tmp -> mbmi . ref_frame != INTRA_FRAME ) cpi -> lfmv [ mb_col + mb_row * ( cm -> mode_info_stride + 1 ) ] . as_int = tmp -> mbmi . mv . as_int ; cpi -> lf_ref_frame_sign_bias [ mb_col + mb_row * ( cm -> mode_info_stride + 1 ) ] = cm -> ref_frame_sign_bias [ tmp -> mbmi . ref_frame ] ; cpi -> lf_ref_frame [ mb_col + mb_row * ( cm -> mode_info_stride + 1 ) ] = tmp -> mbmi . ref_frame ; tmp ++ ; } } } } { int mb_row ; int mb_col ; MODE_INFO * tmp = cm -> mi ; cpi -> zeromv_count = 0 ; if ( cm -> frame_type != KEY_FRAME ) { for ( mb_row = 0 ; mb_row < cm -> mb_rows ; mb_row ++ ) { for ( mb_col = 0 ; mb_col < cm -> mb_cols ; mb_col ++ ) { <S2SV_StartBug> if ( tmp -> mbmi . mode == ZEROMV ) <S2SV_EndBug> cpi -> zeromv_count ++ ; tmp ++ ; } tmp ++ ; } } } # if CONFIG_MULTI_RES_ENCODING vp8_cal_dissimilarity ( cpi ) ; # endif if ( cpi -> oxcf . number_of_layers == 1 ) vp8_update_gf_useage_maps ( cpi , cm , & cpi -> mb ) ; if ( cm -> frame_type == KEY_FRAME ) cm -> refresh_last_frame = 1 ; # if 0 { FILE * f = fopen ( \"gfactive.stt\" , \"a\" ) ; fprintf ( f , \"%8d<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%8d\\\\n\" , cm -> current_video_frame , ( 100 * cpi -> gf_active_count ) / ( cpi -> common . mb_rows * cpi -> common . mb_cols ) , cpi -> this_iiratio , cpi -> next_iiratio , cm -> refresh_golden_frame ) ; fclose ( f ) ; } # endif if ( ! cpi -> oxcf . error_resilient_mode && cm -> refresh_golden_frame ) cm -> copy_buffer_to_arf = 2 ; else cm -> copy_buffer_to_arf = 0 ; cm -> frame_to_show = & cm -> yv12_fb [ cm -> new_fb_idx ] ; <S2SV_StartBug> # if CONFIG_MULTITHREAD <S2SV_EndBug> if ( cpi -> b_multi_threaded ) { <S2SV_StartBug> sem_post ( & cpi -> h_event_start_lpf ) ; <S2SV_EndBug> cpi -> b_lpf_running = 1 ; } else # endif { vp8_loopfilter_frame ( cpi , cm ) ; } <S2SV_StartBug> update_reference_frames ( cpi ) ; <S2SV_EndBug> # if ! ( CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING ) if ( cpi -> oxcf . error_resilient_mode ) { cm -> refresh_entropy_probs = 0 ; } # endif # if CONFIG_MULTITHREAD if ( cpi -> b_multi_threaded ) sem_wait ( & cpi -> h_event_end_lpf ) ; # endif vp8_pack_bitstream ( cpi , dest , dest_end , size ) ; # if CONFIG_MULTITHREAD if ( cpi -> b_lpf_running && cpi -> b_calculate_psnr ) { sem_wait ( & cpi -> h_event_end_lpf ) ; cpi -> b_lpf_running = 0 ; } # endif cm -> last_frame_type = cm -> frame_type ; cpi -> total_byte_count += ( * size ) ; cpi -> projected_frame_size = ( * size ) << 3 ; if ( cpi -> oxcf . number_of_layers > 1 ) { unsigned int i ; for ( i = cpi -> current_layer + 1 ; i < cpi -> oxcf . number_of_layers ; i ++ ) cpi -> layer_context [ i ] . total_byte_count += ( * size ) ; } if ( ! active_worst_qchanged ) vp8_update_rate_correction_factors ( cpi , 2 ) ; cpi -> last_q [ cm -> frame_type ] = cm -> base_qindex ; if ( cm -> frame_type == KEY_FRAME ) { vp8_adjust_key_frame_context ( cpi ) ; } if ( cm -> frame_type != KEY_FRAME ) cpi -> avg_frame_qindex = ( 2 + 3 * cpi -> avg_frame_qindex + cm -> base_qindex ) >> 2 ; if ( ( cm -> frame_type != KEY_FRAME ) && ( ( cpi -> oxcf . number_of_layers > 1 ) || ( ! cm -> refresh_golden_frame && ! cm -> refresh_alt_ref_frame ) ) ) { cpi -> ni_frames ++ ; if ( cpi -> pass == 2 ) { cpi -> ni_tot_qi += Q ; cpi -> ni_av_qi = ( cpi -> ni_tot_qi / cpi -> ni_frames ) ; } else { if ( cpi -> ni_frames > 150 ) { cpi -> ni_tot_qi += Q ; cpi -> ni_av_qi = ( cpi -> ni_tot_qi / cpi -> ni_frames ) ; } else { cpi -> ni_tot_qi += Q ; cpi -> ni_av_qi = ( ( cpi -> ni_tot_qi / cpi -> ni_frames ) + cpi -> worst_quality + 1 ) / 2 ; } if ( Q > cpi -> ni_av_qi ) cpi -> ni_av_qi = Q - 1 ; } } if ( ! cm -> show_frame ) cpi -> bits_off_target -= cpi -> projected_frame_size ; else cpi -> bits_off_target += cpi -> av_per_frame_bandwidth - cpi -> projected_frame_size ; if ( cpi -> bits_off_target > cpi -> oxcf . maximum_buffer_size ) <S2SV_StartBug> cpi -> bits_off_target = cpi -> oxcf . maximum_buffer_size ; <S2SV_EndBug> cpi -> rolling_target_bits = ( ( cpi -> rolling_target_bits * 3 ) + cpi -> this_frame_target + 2 ) / 4 ; cpi -> rolling_actual_bits = ( ( cpi -> rolling_actual_bits * 3 ) + cpi -> projected_frame_size + 2 ) / 4 ; cpi -> long_rolling_target_bits = ( ( cpi -> long_rolling_target_bits * 31 ) + cpi -> this_frame_target + 16 ) / 32 ; cpi -> long_rolling_actual_bits = ( ( cpi -> long_rolling_actual_bits * 31 ) + cpi -> projected_frame_size + 16 ) / 32 ; cpi -> total_actual_bits += cpi -> projected_frame_size ; cpi -> total_target_vs_actual += ( cpi -> this_frame_target - cpi -> projected_frame_size ) ; cpi -> buffer_level = cpi -> bits_off_target ; if ( cpi -> oxcf . number_of_layers > 1 ) { unsigned int i ; for ( i = cpi -> current_layer + 1 ; i < cpi -> oxcf . number_of_layers ; i ++ ) { LAYER_CONTEXT * lc = & cpi -> layer_context [ i ] ; int bits_off_for_this_layer = ( int ) ( lc -> target_bandwidth / lc -> framerate - cpi -> projected_frame_size ) ; lc -> bits_off_target += bits_off_for_this_layer ; if ( lc -> bits_off_target > lc -> maximum_buffer_size ) lc -> bits_off_target = lc -> maximum_buffer_size ; lc -> total_actual_bits += cpi -> projected_frame_size ; lc -> total_target_vs_actual += bits_off_for_this_layer ; lc -> buffer_level = lc -> bits_off_target ; } } if ( cm -> frame_type == KEY_FRAME ) { cpi -> twopass . kf_group_bits += cpi -> this_frame_target - cpi -> projected_frame_size ; if ( cpi -> twopass . kf_group_bits < 0 ) cpi -> twopass . kf_group_bits = 0 ; } else if ( cm -> refresh_golden_frame || cm -> refresh_alt_ref_frame ) { cpi -> twopass . gf_group_bits += cpi -> this_frame_target - cpi -> projected_frame_size ; if ( cpi -> twopass . gf_group_bits < 0 ) cpi -> twopass . gf_group_bits = 0 ; } if ( cm -> frame_type != KEY_FRAME ) { if ( cpi -> common . refresh_alt_ref_frame ) { cpi -> last_skip_false_probs [ 2 ] = cpi -> prob_skip_false ; cpi -> last_skip_probs_q [ 2 ] = cm -> base_qindex ; } else if ( cpi -> common . refresh_golden_frame ) { cpi -> last_skip_false_probs [ 1 ] = cpi -> prob_skip_false ; cpi -> last_skip_probs_q [ 1 ] = cm -> base_qindex ; } else { cpi -> last_skip_false_probs [ 0 ] = cpi -> prob_skip_false ; cpi -> last_skip_probs_q [ 0 ] = cm -> base_qindex ; cpi -> base_skip_false_prob [ cm -> base_qindex ] = cpi -> prob_skip_false ; } } # if 0 && CONFIG_INTERNAL_STATS { FILE * f = fopen ( \"tmp.stt\" , \"a\" ) ; vp8_clear_system_state ( ) ; if ( cpi -> twopass . total_left_stats . coded_error != 0.0 ) fprintf ( f , \"%10d<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>%10\" PRId64 \"<S2SV_blank>%10\" PRId64 \"%10\" PRId64 \"<S2SV_blank>%10d<S2SV_blank>%6d<S2SV_blank>%6d<S2SV_blank>%6d<S2SV_blank>%6d<S2SV_blank>%5d<S2SV_blank>%5d<S2SV_blank>%5d<S2SV_blank>%8d<S2SV_blank>\" \"%8.2lf<S2SV_blank>%\" PRId64 \"<S2SV_blank>%10.3lf<S2SV_blank>%10\" PRId64 \"<S2SV_blank>%8d\\\\n\" , cpi -> common . current_video_frame , cpi -> this_frame_target , cpi -> projected_frame_size , ( cpi -> projected_frame_size - cpi -> this_frame_target ) , cpi -> total_target_vs_actual , cpi -> buffer_level , ( cpi -> oxcf . starting_buffer_level - cpi -> bits_off_target ) , cpi -> total_actual_bits , cm -> base_qindex , cpi -> active_best_quality , cpi -> active_worst_quality , cpi -> ni_av_qi , cpi -> cq_target_quality , cm -> refresh_golden_frame , cm -> refresh_alt_ref_frame , cm -> frame_type , cpi -> gfu_boost , cpi -> twopass . est_max_qcorrection_factor , cpi -> twopass . bits_left , cpi -> twopass . total_left_stats . coded_error , ( double ) cpi -> twopass . bits_left / cpi -> twopass . total_left_stats . coded_error , cpi -> tot_recode_hits ) ; else fprintf ( f , \"%10d<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>%10\" PRId64 \"<S2SV_blank>%10\" PRId64 \"%10\" PRId64 \"<S2SV_blank>%10d<S2SV_blank>%6d<S2SV_blank>%6d<S2SV_blank>%6d<S2SV_blank>%6d<S2SV_blank>%5d<S2SV_blank>%5d<S2SV_blank>%5d<S2SV_blank>%8d<S2SV_blank>\" \"%8.2lf<S2SV_blank>%\" PRId64 \"<S2SV_blank>%10.3lf<S2SV_blank>%8d\\\\n\" , cpi -> common . current_video_frame , cpi -> this_frame_target , cpi -> projected_frame_size , ( cpi -> projected_frame_size - cpi -> this_frame_target ) , cpi -> total_target_vs_actual , cpi -> buffer_level , ( cpi -> oxcf . starting_buffer_level - cpi -> bits_off_target ) , cpi -> total_actual_bits , cm -> base_qindex , cpi -> active_best_quality , cpi -> active_worst_quality , cpi -> ni_av_qi , cpi -> cq_target_quality , cm -> refresh_golden_frame , cm -> refresh_alt_ref_frame , cm -> frame_type , cpi -> gfu_boost , cpi -> twopass . est_max_qcorrection_factor , cpi -> twopass . bits_left , cpi -> twopass . total_left_stats . coded_error , cpi -> tot_recode_hits ) ; fclose ( f ) ; { FILE * fmodes = fopen ( \"Modes.stt\" , \"a\" ) ; fprintf ( fmodes , \"%6d:%1d:%1d:%1d<S2SV_blank>\" , cpi -> common . current_video_frame , cm -> frame_type , cm -> refresh_golden_frame , cm -> refresh_alt_ref_frame ) ; fprintf ( fmodes , \"\\\\n\" ) ; fclose ( fmodes ) ; } } # endif if ( cm -> refresh_golden_frame == 1 ) cm -> frame_flags = cm -> frame_flags | FRAMEFLAGS_GOLDEN ; else cm -> frame_flags = cm -> frame_flags & ~ FRAMEFLAGS_GOLDEN ; if ( cm -> refresh_alt_ref_frame == 1 ) cm -> frame_flags = cm -> frame_flags | FRAMEFLAGS_ALTREF ; else cm -> frame_flags = cm -> frame_flags & ~ FRAMEFLAGS_ALTREF ; if ( cm -> refresh_last_frame & cm -> refresh_golden_frame ) cpi -> gold_is_last = 1 ; else if ( cm -> refresh_last_frame ^ cm -> refresh_golden_frame ) cpi -> gold_is_last = 0 ; if ( cm -> refresh_last_frame & cm -> refresh_alt_ref_frame ) cpi -> alt_is_last = 1 ; else if ( cm -> refresh_last_frame ^ cm -> refresh_alt_ref_frame ) cpi -> alt_is_last = 0 ; if ( cm -> refresh_alt_ref_frame & cm -> refresh_golden_frame ) cpi -> gold_is_alt = 1 ; else if ( cm -> refresh_alt_ref_frame ^ cm -> refresh_golden_frame ) cpi -> gold_is_alt = 0 ; cpi -> ref_frame_flags = VP8_ALTR_FRAME | VP8_GOLD_FRAME | VP8_LAST_FRAME ; if ( cpi -> gold_is_last ) cpi -> ref_frame_flags &= ~ VP8_GOLD_FRAME ; if ( cpi -> alt_is_last ) cpi -> ref_frame_flags &= ~ VP8_ALTR_FRAME ; if ( cpi -> gold_is_alt ) cpi -> ref_frame_flags &= ~ VP8_ALTR_FRAME ; if ( ! cpi -> oxcf . error_resilient_mode ) { if ( cpi -> oxcf . play_alternate && cm -> refresh_alt_ref_frame && ( cm -> frame_type != KEY_FRAME ) ) update_alt_ref_frame_stats ( cpi ) ; else update_golden_frame_stats ( cpi ) ; } if ( cm -> frame_type == KEY_FRAME ) { * frame_flags = cm -> frame_flags | FRAMEFLAGS_KEY ; cm -> frame_type = INTER_FRAME ; cpi -> last_frame_percent_intra = 100 ; } else { * frame_flags = cm -> frame_flags & ~ FRAMEFLAGS_KEY ; cpi -> last_frame_percent_intra = cpi -> this_frame_percent_intra ; } cpi -> mb . e_mbd . update_mb_segmentation_map = 0 ; cpi -> mb . e_mbd . update_mb_segmentation_data = 0 ; cpi -> mb . e_mbd . mode_ref_lf_delta_update = 0 ; if ( cm -> show_frame ) { cm -> current_video_frame ++ ; cpi -> frames_since_key ++ ; cpi -> temporal_pattern_counter ++ ; } # if 0 { char filename [ 512 ] ; FILE * recon_file ; sprintf ( filename , \"enc%04d.yuv\" , ( int ) cm -> current_video_frame ) ; recon_file = fopen ( filename , \"wb\" ) ; fwrite ( cm -> yv12_fb [ cm -> lst_fb_idx ] . buffer_alloc , cm -> yv12_fb [ cm -> lst_fb_idx ] . frame_size , 1 , recon_file ) ; fclose ( recon_file ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = KEY_FRAME ; # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity == 4 ) { vp8_denoiser_set_parameters ( & cpi -> denoiser , kDenoiserOnYUV ) ; } # endif } # if <S2SV_ModEnd> CONFIG_MULTI_RES_ENCODING if ( <S2SV_ModStart> -> oxcf . mr_total_resolutions > 1 ) <S2SV_ModEnd> { LOWER_RES_FRAME_INFO * <S2SV_ModStart> . mr_low_res_mode_info ; if ( cpi -> oxcf . mr_encoder_id ) { <S2SV_ModStart> ] ) ; } } if ( cm -> frame_type == KEY_FRAME ) { if ( cpi -> oxcf . mr_encoder_id ) { if ( cpi -> common . current_video_frame == 0 && cpi -> buffer_level == 0 ) { unsigned int i ; cpi -> bits_off_target = cpi -> oxcf . starting_buffer_level ; cpi -> buffer_level = cpi -> oxcf . starting_buffer_level ; for ( i = 0 ; i < cpi -> oxcf . number_of_layers ; i ++ ) { LAYER_CONTEXT * lc = & cpi -> layer_context [ i ] ; lc -> bits_off_target = lc -> starting_buffer_level ; lc -> buffer_level = lc -> starting_buffer_level ; } } cpi -> common . current_video_frame = low_res_frame_info -> key_frame_counter_value ; } else { low_res_frame_info -> key_frame_counter_value = cpi -> common . current_video_frame ; } } } # endif cpi -> closest_reference_frame = LAST_FRAME ; if ( cm -> frame_type != KEY_FRAME ) { int i ; MV_REFERENCE_FRAME closest_ref = INTRA_FRAME ; if ( cpi -> ref_frame_flags & VP8_LAST_FRAME ) { closest_ref = LAST_FRAME ; } else if ( cpi -> ref_frame_flags & VP8_GOLD_FRAME ) { closest_ref = GOLDEN_FRAME ; } else <S2SV_ModStart> & VP8_ALTR_FRAME ) { closest_ref = ALTREF_FRAME ; } for ( i = 1 ; i <= 3 ; i ++ ) { vpx_ref_frame_type_t ref_frame_type = ( vpx_ref_frame_type_t ) ( ( i == 3 ) ? 4 : i ) ; if ( cpi -> ref_frame_flags & ref_frame_type ) { if ( ( cm -> current_video_frame - <S2SV_ModEnd> cpi -> current_ref_frames <S2SV_ModStart> -> current_ref_frames [ i ] ) < ( cm -> current_video_frame - cpi -> current_ref_frames [ closest_ref ] ) ) { closest_ref = i ; } } } cpi -> closest_reference_frame = closest_ref ; } <S2SV_ModEnd> if ( cm <S2SV_ModStart> 128 ; } memset ( cpi -> consec_zero_last , 0 , cm -> mb_rows * cm -> mb_cols ) ; memset ( cpi -> consec_zero_last_mvbias , 0 , ( cpi -> common . mb_rows * cpi -> common . mb_cols ) ) ; <S2SV_ModStart> cyclic_refresh_mode_enabled ) { int disable_cr_gf = ( cpi -> oxcf . screen_content_mode == 2 && cm -> refresh_golden_frame ) ; <S2SV_ModStart> current_layer == 0 && cpi -> force_maxqp == 0 && ! disable_cr_gf <S2SV_ModStart> cpi ) ; # if CONFIG_TEMPORAL_DENOISING && CONFIG_POSTPROC if ( cpi -> oxcf . noise_sensitivity >= 3 ) { if ( cpi -> denoiser . denoise_pars . spatial_blur != 0 ) { vp8_de_noise ( cm , cpi -> Source , cpi -> Source , cpi -> denoiser . denoise_pars . spatial_blur , 1 , 0 , 0 ) ; } } # endif <S2SV_ModStart> 1 , 0 , 1 <S2SV_ModStart> 1 , 0 , 1 <S2SV_ModStart> OUTPUT_YUV_SRC vp8_write_yuv_frame ( yuv_file , <S2SV_ModStart> ) ; } memset ( cpi -> consec_zero_last , 0 , cm -> mb_rows * cm -> mb_cols ) ; memset ( cpi -> consec_zero_last_mvbias , 0 , ( cpi -> common . mb_rows * cpi -> common . mb_cols ) ) ; <S2SV_ModStart> 0 ) { memcpy <S2SV_ModEnd> ( & cm <S2SV_ModStart> cpi ) ; if ( cpi -> oxcf . screen_content_mode == 2 ) { if ( vp8_drop_encodedframe_overshoot ( cpi , Q ) ) return ; } <S2SV_ModStart> mode == ZEROMV && tmp -> mbmi . ref_frame == LAST_FRAME <S2SV_ModStart> ; # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity > 0 && cpi -> oxcf . noise_sensitivity < 4 && ! cpi -> oxcf . screen_content_mode && cpi -> frames_since_key % 8 == 0 && cm -> frame_type != KEY_FRAME ) { cpi -> mse_source_denoised = measure_square_diff_partial ( <S2SV_ModEnd> & cpi -> <S2SV_ModStart> & cpi -> denoiser . yv12_running_avg [ INTRA_FRAME ] , cpi -> Source , cpi ) ; } if ( cpi -> oxcf . noise_sensitivity == 4 && ! cpi -> oxcf . screen_content_mode && cpi -> frames_since_key % 8 == 0 && cm -> frame_type != KEY_FRAME ) { process_denoiser_mode_change ( cpi ) ; } # endif # if CONFIG_MULTITHREAD if ( cpi -> b_multi_threaded ) { sem_post ( & cpi -> h_event_start_lpf ) ; cpi -> b_lpf_running = 1 ; } else # endif <S2SV_ModEnd> { vp8_loopfilter_frame ( <S2SV_ModStart> cpi ) ; # ifdef OUTPUT_YUV_DENOISED vp8_write_yuv_frame ( yuv_denoised_file , & cpi -> denoiser . yv12_running_avg [ INTRA_FRAME ] ) ; # endif <S2SV_ModStart> -> bits_off_target = cpi -> oxcf . maximum_buffer_size ; if ( cpi -> drop_frames_allowed == 0 && cpi -> oxcf . screen_content_mode && cpi -> bits_off_target < - cpi -> oxcf . maximum_buffer_size ) cpi -> bits_off_target = -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 long keyctl_chown_key ( key_serial_t id , uid_t user , gid_t group ) { struct key_user * newowner , * zapowner = NULL ; struct key * key ; key_ref_t key_ref ; long ret ; kuid_t uid ; kgid_t gid ; uid = make_kuid ( current_user_ns ( ) , user ) ; gid = make_kgid ( current_user_ns ( ) , group ) ; ret = - EINVAL ; if ( ( user != ( uid_t ) - 1 ) && ! uid_valid ( uid ) ) goto error ; if ( ( group != ( gid_t ) - 1 ) && ! gid_valid ( gid ) ) goto error ; ret = 0 ; if ( user == ( uid_t ) - 1 && group == ( gid_t ) - 1 ) goto error ; key_ref = lookup_user_key ( id , KEY_LOOKUP_CREATE | KEY_LOOKUP_PARTIAL , KEY_NEED_SETATTR ) ; if ( IS_ERR ( key_ref ) ) { ret = PTR_ERR ( key_ref ) ; goto error ; } key = key_ref_to_ptr ( key_ref ) ; ret = - EACCES ; down_write ( & key -> sem ) ; if ( ! capable ( CAP_SYS_ADMIN ) ) { if ( user != ( uid_t ) - 1 && ! uid_eq ( key -> uid , uid ) ) goto error_put ; if ( group != ( gid_t ) - 1 && ! gid_eq ( gid , key -> gid ) && ! in_group_p ( gid ) ) goto error_put ; } if ( user != ( uid_t ) - 1 && ! uid_eq ( uid , key -> uid ) ) { ret = - ENOMEM ; newowner = key_user_lookup ( uid ) ; if ( ! newowner ) goto error_put ; if ( test_bit ( KEY_FLAG_IN_QUOTA , & key -> flags ) ) { unsigned maxkeys = uid_eq ( uid , GLOBAL_ROOT_UID ) ? key_quota_root_maxkeys : key_quota_maxkeys ; unsigned maxbytes = uid_eq ( uid , GLOBAL_ROOT_UID ) ? key_quota_root_maxbytes : key_quota_maxbytes ; spin_lock ( & newowner -> lock ) ; if ( newowner -> qnkeys + 1 >= maxkeys || newowner -> qnbytes + key -> quotalen >= maxbytes || newowner -> qnbytes + key -> quotalen < newowner -> qnbytes ) goto quota_overrun ; newowner -> qnkeys ++ ; newowner -> qnbytes += key -> quotalen ; spin_unlock ( & newowner -> lock ) ; spin_lock ( & key -> user -> lock ) ; key -> user -> qnkeys -- ; key -> user -> qnbytes -= key -> quotalen ; spin_unlock ( & key -> user -> lock ) ; } atomic_dec ( & key -> user -> nkeys ) ; atomic_inc ( & newowner -> nkeys ) ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) { <S2SV_EndBug> atomic_dec ( & key -> user -> nikeys ) ; atomic_inc ( & newowner -> nikeys ) ; } zapowner = key -> user ; key -> user = newowner ; key -> uid = uid ; } if ( group != ( gid_t ) - 1 ) key -> gid = gid ; ret = 0 ; error_put : up_write ( & key -> sem ) ; key_put ( key ) ; if ( zapowner ) key_user_put ( zapowner ) ; error : return ret ; quota_overrun : spin_unlock ( & newowner -> lock ) ; zapowner = newowner ; ret = - EDQUOT ; goto error_put ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key -> state != KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) { atomic_dec\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15683\n\n```\nCWE-787 Bool rfbOptPamAuth ( void ) { SecTypeData * s ; for ( s = secTypes ; s -> name != NULL ; s ++ ) { if ( ( ! strcmp ( s -> name , \"unixlogin\" ) || <S2SV_StartBug> ! strcmp ( & s -> name [ strlen ( s -> name ) - 5 ] , \"plain\" ) ) && s -> enabled ) <S2SV_EndBug> return TRUE ; } return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"unixlogin\" ) || strstr <S2SV_ModEnd> ( s -> <S2SV_ModStart> s -> name <S2SV_ModEnd> , \"plain\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9710\n\n```\nCWE-362 int btrfs_search_slot ( struct btrfs_trans_handle * trans , struct btrfs_root * root , struct btrfs_key * key , struct btrfs_path * p , int ins_len , int cow ) { struct extent_buffer * b ; int slot ; int ret ; int err ; int level ; int lowest_unlock = 1 ; int root_lock ; int write_lock_level = 0 ; u8 lowest_level = 0 ; int min_write_lock_level ; int prev_cmp ; lowest_level = p -> lowest_level ; WARN_ON ( lowest_level && ins_len > 0 ) ; WARN_ON ( p -> nodes [ 0 ] != NULL ) ; BUG_ON ( ! cow && ins_len ) ; if ( ins_len < 0 ) { lowest_unlock = 2 ; write_lock_level = 2 ; } else if ( ins_len > 0 ) { write_lock_level = 1 ; } if ( ! cow ) write_lock_level = - 1 ; if ( cow && ( p -> keep_locks || p -> lowest_level ) ) write_lock_level = BTRFS_MAX_LEVEL ; min_write_lock_level = write_lock_level ; again : prev_cmp = - 1 ; root_lock = BTRFS_READ_LOCK ; level = 0 ; if ( p -> search_commit_root ) { if ( p -> need_commit_sem ) down_read ( & root -> fs_info -> commit_root_sem ) ; b = root -> commit_root ; extent_buffer_get ( b ) ; level = btrfs_header_level ( b ) ; if ( p -> need_commit_sem ) up_read ( & root -> fs_info -> commit_root_sem ) ; if ( ! p -> skip_locking ) btrfs_tree_read_lock ( b ) ; } else { if ( p -> skip_locking ) { b = btrfs_root_node ( root ) ; level = btrfs_header_level ( b ) ; } else { b = btrfs_read_lock_root_node ( root ) ; level = btrfs_header_level ( b ) ; if ( level <= write_lock_level ) { btrfs_tree_read_unlock ( b ) ; free_extent_buffer ( b ) ; b = btrfs_lock_root_node ( root ) ; root_lock = BTRFS_WRITE_LOCK ; level = btrfs_header_level ( b ) ; } } } p -> nodes [ level ] = b ; if ( ! p -> skip_locking ) p -> locks [ level ] = root_lock ; while ( b ) { level = btrfs_header_level ( b ) ; if ( cow ) { if ( ! should_cow_block ( trans , root , b ) ) goto cow_done ; if ( level > write_lock_level || ( level + 1 > write_lock_level && level + 1 < BTRFS_MAX_LEVEL && p -> nodes [ level + 1 ] ) ) { write_lock_level = level + 1 ; btrfs_release_path ( p ) ; goto again ; } btrfs_set_path_blocking ( p ) ; err = btrfs_cow_block ( trans , root , b , p -> nodes [ level + 1 ] , p -> slots [ level + 1 ] , & b ) ; if ( err ) { ret = err ; goto done ; } } cow_done : p -> nodes [ level ] = b ; btrfs_clear_path_blocking ( p , NULL , 0 ) ; if ( ! ins_len && ! p -> keep_locks ) { int u = level + 1 ; if ( u < BTRFS_MAX_LEVEL && p -> locks [ u ] ) { btrfs_tree_unlock_rw ( p -> nodes [ u ] , p -> locks [ u ] ) ; p -> locks [ u ] = 0 ; } } ret = key_search ( b , key , level , & prev_cmp , & slot ) ; if ( level != 0 ) { int dec = 0 ; if ( ret && slot > 0 ) { dec = 1 ; slot -= 1 ; } p -> slots [ level ] = slot ; err = setup_nodes_for_search ( trans , root , p , b , level , ins_len , & write_lock_level ) ; if ( err == - EAGAIN ) goto again ; if ( err ) { ret = err ; goto done ; } b = p -> nodes [ level ] ; slot = p -> slots [ level ] ; if ( slot == 0 && ins_len && write_lock_level < level + 1 ) { write_lock_level = level + 1 ; btrfs_release_path ( p ) ; goto again ; } unlock_up ( p , level , lowest_unlock , min_write_lock_level , & write_lock_level ) ; if ( level == lowest_level ) { if ( dec ) p -> slots [ level ] ++ ; goto done ; } err = read_block_for_search ( trans , root , p , & b , level , slot , key , 0 ) ; if ( err == - EAGAIN ) goto again ; if ( err ) { ret = err ; goto done ; } if ( ! p -> skip_locking ) { level = btrfs_header_level ( b ) ; if ( level <= write_lock_level ) { err = btrfs_try_tree_write_lock ( b ) ; if ( ! err ) { btrfs_set_path_blocking ( p ) ; btrfs_tree_lock ( b ) ; btrfs_clear_path_blocking ( p , b , BTRFS_WRITE_LOCK ) ; } p -> locks [ level ] = BTRFS_WRITE_LOCK ; } else { err = btrfs_try_tree_read_lock ( b ) ; if ( ! err ) { btrfs_set_path_blocking ( p ) ; btrfs_tree_read_lock ( b ) ; btrfs_clear_path_blocking ( p , b , BTRFS_READ_LOCK ) ; } p -> locks [ level ] = BTRFS_READ_LOCK ; } p -> nodes [ level ] = b ; } } else { p -> slots [ level ] = slot ; if ( ins_len > 0 && btrfs_leaf_free_space ( root , b ) < ins_len ) { if ( write_lock_level < 1 ) { write_lock_level = 1 ; btrfs_release_path ( p ) ; goto again ; } btrfs_set_path_blocking ( p ) ; err = split_leaf ( trans , root , key , p , ins_len , ret == 0 ) ; btrfs_clear_path_blocking ( p , NULL , 0 ) ; BUG_ON ( err > 0 ) ; if ( err ) { ret = err ; goto done ; } } if ( ! p -> search_for_split ) unlock_up ( p , level , lowest_unlock , min_write_lock_level , & write_lock_level ) ; goto done ; } } ret = 1 ; done : if ( ! p -> leave_spinning ) btrfs_set_path_blocking ( p ) ; <S2SV_StartBug> if ( ret < 0 ) <S2SV_EndBug> btrfs_release_path ( p ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret < 0 && ! p -> skip_release_on_error\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_plane_add_noise_c ( unsigned char * Start , char * noise , char blackclamp [ 16 ] , char whiteclamp [ 16 ] , char bothclamp [ 16 ] , unsigned int Width , unsigned int Height , int Pitch ) { <S2SV_StartBug> unsigned int i , j ; <S2SV_EndBug> for ( i = 0 ; i < Height ; i ++ ) { unsigned char * Pos = Start + i * Pitch ; char * Ref = ( char * ) ( noise + ( rand ( ) & 0xff ) ) ; for ( j = 0 ; j < Width ; j ++ ) { if ( Pos [ j ] < blackclamp [ 0 ] ) Pos [ j ] = blackclamp [ 0 ] ; if ( Pos [ j ] > 255 + whiteclamp [ 0 ] ) Pos [ j ] = 255 + whiteclamp [ 0 ] ; Pos [ j ] += Ref [ j ] ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i , j ; ( void ) bothclamp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2482\n\n```\nCWE-000 static void sctp_sock_migrate ( struct sock * oldsk , struct sock * newsk , struct sctp_association * assoc , sctp_socket_type_t type ) { struct sctp_sock * oldsp = sctp_sk ( oldsk ) ; struct sctp_sock * newsp = sctp_sk ( newsk ) ; struct sctp_bind_bucket * pp ; struct sctp_endpoint * newep = newsp -> ep ; struct sk_buff * skb , * tmp ; struct sctp_ulpevent * event ; int flags = 0 ; newsk -> sk_sndbuf = oldsk -> sk_sndbuf ; newsk -> sk_rcvbuf = oldsk -> sk_rcvbuf ; inet_sk_copy_descendant ( newsk , oldsk ) ; newsp -> ep = newep ; newsp -> hmac = NULL ; pp = sctp_sk ( oldsk ) -> bind_hash ; sk_add_bind_node ( newsk , & pp -> owner ) ; sctp_sk ( newsk ) -> bind_hash = pp ; inet_sk ( newsk ) -> num = inet_sk ( oldsk ) -> num ; if ( PF_INET6 == assoc -> base . sk -> sk_family ) flags = SCTP_ADDR6_ALLOWED ; if ( assoc -> peer . ipv4_address ) flags |= SCTP_ADDR4_PEERSUPP ; if ( assoc -> peer . ipv6_address ) flags |= SCTP_ADDR6_PEERSUPP ; sctp_bind_addr_copy ( & newsp -> ep -> base . bind_addr , & oldsp -> ep -> base . bind_addr , SCTP_SCOPE_GLOBAL , GFP_KERNEL , flags ) ; sctp_skb_for_each ( skb , & oldsk -> sk_receive_queue , tmp ) { event = sctp_skb2event ( skb ) ; if ( event -> asoc == assoc ) { <S2SV_StartBug> sctp_sock_rfree ( skb ) ; <S2SV_EndBug> __skb_unlink ( skb , & oldsk -> sk_receive_queue ) ; __skb_queue_tail ( & newsk -> sk_receive_queue , skb ) ; <S2SV_StartBug> sctp_skb_set_owner_r ( skb , newsk ) ; <S2SV_EndBug> } } skb_queue_head_init ( & newsp -> pd_lobby ) ; sctp_sk ( newsk ) -> pd_mode = assoc -> ulpq . pd_mode ; if ( sctp_sk ( oldsk ) -> pd_mode ) { struct sk_buff_head * queue ; if ( assoc -> ulpq . pd_mode ) { queue = & newsp -> pd_lobby ; } else queue = & newsk -> sk_receive_queue ; sctp_skb_for_each ( skb , & oldsp -> pd_lobby , tmp ) { event = sctp_skb2event ( skb ) ; if ( event -> asoc == assoc ) { <S2SV_StartBug> sctp_sock_rfree ( skb ) ; <S2SV_EndBug> __skb_unlink ( skb , & oldsp -> pd_lobby ) ; __skb_queue_tail ( queue , skb ) ; <S2SV_StartBug> sctp_skb_set_owner_r ( skb , newsk ) ; <S2SV_EndBug> } } if ( assoc -> ulpq . pd_mode ) <S2SV_StartBug> sctp_clear_pd ( oldsk ) ; <S2SV_EndBug> } newsp -> type = type ; sctp_lock_sock ( newsk ) ; sctp_assoc_migrate ( assoc , newsk ) ; if ( sctp_state ( assoc , CLOSED ) && sctp_style ( newsk , TCP ) ) newsk -> sk_shutdown |= RCV_SHUTDOWN ; newsk -> sk_state = SCTP_SS_ESTABLISHED ; sctp_release_sock ( newsk ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> assoc ) { sctp_sock_rfree_frag <S2SV_ModEnd> ( skb ) <S2SV_ModStart> skb ) ; sctp_skb_set_owner_r_frag <S2SV_ModEnd> ( skb , <S2SV_ModStart> assoc ) { sctp_sock_rfree_frag <S2SV_ModEnd> ( skb ) <S2SV_ModStart> skb ) ; sctp_skb_set_owner_r_frag <S2SV_ModEnd> ( skb , <S2SV_ModStart> sctp_clear_pd ( oldsk ) ; } sctp_skb_for_each ( skb , & assoc -> ulpq . reasm , tmp ) { sctp_sock_rfree_frag ( skb ) ; sctp_skb_set_owner_r_frag ( skb , newsk ) ; } sctp_skb_for_each ( skb , & assoc -> ulpq . lobby , tmp ) { sctp_sock_rfree_frag ( skb ) ; sctp_skb_set_owner_r_frag ( skb , newsk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5375\n\n```\nCWE-310 static int btrfs_rename ( struct inode * old_dir , struct dentry * old_dentry , struct inode * new_dir , struct dentry * new_dentry ) { struct btrfs_trans_handle * trans ; struct btrfs_root * root = BTRFS_I ( old_dir ) -> root ; struct btrfs_root * dest = BTRFS_I ( new_dir ) -> root ; struct inode * new_inode = new_dentry -> d_inode ; struct inode * old_inode = old_dentry -> d_inode ; struct timespec ctime = CURRENT_TIME ; u64 index = 0 ; u64 root_objectid ; int ret ; u64 old_ino = btrfs_ino ( old_inode ) ; if ( btrfs_ino ( new_dir ) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID ) return - EPERM ; if ( old_ino != BTRFS_FIRST_FREE_OBJECTID && root != dest ) return - EXDEV ; if ( old_ino == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID || ( new_inode && btrfs_ino ( new_inode ) == BTRFS_FIRST_FREE_OBJECTID ) ) return - ENOTEMPTY ; if ( S_ISDIR ( old_inode -> i_mode ) && new_inode && new_inode -> i_size > BTRFS_EMPTY_DIR_SIZE ) return - ENOTEMPTY ; <S2SV_StartBug> if ( new_inode && S_ISREG ( old_inode -> i_mode ) && new_inode -> i_size && <S2SV_EndBug> old_inode -> i_size > BTRFS_ORDERED_OPERATIONS_FLUSH_LIMIT ) filemap_flush ( old_inode -> i_mapping ) ; if ( old_ino == BTRFS_FIRST_FREE_OBJECTID ) down_read ( & root -> fs_info -> subvol_sem ) ; trans = btrfs_start_transaction ( root , 20 ) ; if ( IS_ERR ( trans ) ) { ret = PTR_ERR ( trans ) ; goto out_notrans ; } if ( dest != root ) btrfs_record_root_in_trans ( trans , dest ) ; ret = btrfs_set_inode_index ( new_dir , & index ) ; if ( ret ) goto out_fail ; if ( unlikely ( old_ino == BTRFS_FIRST_FREE_OBJECTID ) ) { root -> fs_info -> last_trans_log_full_commit = trans -> transid ; } else { ret = btrfs_insert_inode_ref ( trans , dest , new_dentry -> d_name . name , new_dentry -> d_name . len , old_ino , btrfs_ino ( new_dir ) , index ) ; if ( ret ) goto out_fail ; btrfs_pin_log_trans ( root ) ; } if ( new_inode && new_inode -> i_size && S_ISREG ( old_inode -> i_mode ) ) btrfs_add_ordered_operation ( trans , root , old_inode ) ; inode_inc_iversion ( old_dir ) ; inode_inc_iversion ( new_dir ) ; inode_inc_iversion ( old_inode ) ; old_dir -> i_ctime = old_dir -> i_mtime = ctime ; new_dir -> i_ctime = new_dir -> i_mtime = ctime ; old_inode -> i_ctime = ctime ; if ( old_dentry -> d_parent != new_dentry -> d_parent ) btrfs_record_unlink_dir ( trans , old_dir , old_inode , 1 ) ; if ( unlikely ( old_ino == BTRFS_FIRST_FREE_OBJECTID ) ) { root_objectid = BTRFS_I ( old_inode ) -> root -> root_key . objectid ; ret = btrfs_unlink_subvol ( trans , root , old_dir , root_objectid , old_dentry -> d_name . name , old_dentry -> d_name . len ) ; } else { ret = __btrfs_unlink_inode ( trans , root , old_dir , old_dentry -> d_inode , old_dentry -> d_name . name , old_dentry -> d_name . len ) ; if ( ! ret ) ret = btrfs_update_inode ( trans , root , old_inode ) ; } if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto out_fail ; } if ( new_inode ) { inode_inc_iversion ( new_inode ) ; new_inode -> i_ctime = CURRENT_TIME ; if ( unlikely ( btrfs_ino ( new_inode ) == BTRFS_EMPTY_SUBVOL_DIR_OBJECTID ) ) { root_objectid = BTRFS_I ( new_inode ) -> location . objectid ; ret = btrfs_unlink_subvol ( trans , dest , new_dir , root_objectid , new_dentry -> d_name . name , new_dentry -> d_name . len ) ; BUG_ON ( new_inode -> i_nlink == 0 ) ; } else { ret = btrfs_unlink_inode ( trans , dest , new_dir , new_dentry -> d_inode , new_dentry -> d_name . name , new_dentry -> d_name . len ) ; } if ( ! ret && new_inode -> i_nlink == 0 ) { ret = btrfs_orphan_add ( trans , new_dentry -> d_inode ) ; BUG_ON ( ret ) ; } if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto out_fail ; } } fixup_inode_flags ( new_dir , old_inode ) ; ret = btrfs_add_link ( trans , new_dir , old_inode , new_dentry -> d_name . name , new_dentry -> d_name . len , 0 , index ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto out_fail ; } if ( old_ino != BTRFS_FIRST_FREE_OBJECTID ) { struct dentry * parent = new_dentry -> d_parent ; btrfs_log_new_name ( trans , old_inode , old_dir , parent ) ; btrfs_end_log_trans ( root ) ; } out_fail : btrfs_end_transaction ( trans , root ) ; out_notrans : if ( old_ino == BTRFS_FIRST_FREE_OBJECTID ) up_read ( & root -> fs_info -> subvol_sem ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOTEMPTY ; ret = btrfs_check_dir_item_collision ( root , new_dir -> i_ino , new_dentry -> d_name . name , new_dentry -> d_name . len ) ; if ( ret ) { if ( ret == - EEXIST ) { if ( ! new_inode ) { WARN_ON ( 1 ) ; return ret ; } } else { return ret ; } } ret = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9761\n\n```\nCWE-119 static int r_core_cmd_subst_i ( RCore * core , char * cmd , char * colon ) { const char * quotestr = \"`\" ; const char * tick = NULL ; char * ptr , * ptr2 , * str ; char * arroba = NULL ; int i , ret = 0 , pipefd ; bool usemyblock = false ; int scr_html = - 1 ; int scr_color = - 1 ; bool eos = false ; bool haveQuote = false ; if ( ! cmd ) { return 0 ; } cmd = r_str_trim_head_tail ( cmd ) ; switch ( * cmd ) { case '.' : if ( cmd [ 1 ] == \\'\"\\' ) { return r_cmd_call ( core -> rcmd , cmd ) ; } break ; case \\'\"\\' : for ( ; * cmd ; ) { int pipefd = - 1 ; ut64 oseek = UT64_MAX ; char * line , * p ; haveQuote = * cmd == \\'\"\\' ; if ( haveQuote ) { cmd ++ ; <S2SV_StartBug> p = find_eoq ( cmd + 1 ) ; <S2SV_EndBug> if ( ! p || ! * p ) { eprintf ( \"Missing<S2SV_blank>\\\\\"<S2SV_blank>in<S2SV_blank>(%s).\" , cmd ) ; return false ; } * p ++ = 0 ; if ( ! * p ) { eos = true ; } } else { char * sc = strchr ( cmd , ';' ) ; if ( sc ) { * sc = 0 ; } r_core_cmd0 ( core , cmd ) ; if ( ! sc ) { break ; } cmd = sc + 1 ; continue ; } if ( p [ 0 ] ) { if ( p [ 0 ] == '@' ) { p -- ; } while ( p [ 1 ] == ';' || IS_WHITESPACE ( p [ 1 ] ) ) { p ++ ; } if ( p [ 1 ] == '@' || ( p [ 1 ] && p [ 2 ] == '@' ) ) { char * q = strchr ( p + 1 , \\'\"\\' ) ; if ( q ) { * q = 0 ; } haveQuote = q != NULL ; oseek = core -> offset ; r_core_seek ( core , r_num_math ( core -> num , p + 2 ) , 1 ) ; if ( q ) { * p = \\'\"\\' ; p = q ; } else { p = strchr ( p + 1 , ';' ) ; } } if ( p && * p && p [ 1 ] == '>' ) { str = p + 2 ; while ( * str == '>' ) { str ++ ; } while ( IS_WHITESPACE ( * str ) ) { str ++ ; } r_cons_flush ( ) ; pipefd = r_cons_pipe_open ( str , 1 , p [ 2 ] == '>' ) ; } } line = strdup ( cmd ) ; line = r_str_replace ( line , \"\\\\\\\\\\\\\"\" , \"\\\\\"\" , true ) ; if ( p && * p && p [ 1 ] == '|' ) { str = p + 2 ; while ( IS_WHITESPACE ( * str ) ) { str ++ ; } r_core_cmd_pipe ( core , cmd , str ) ; } else { r_cmd_call ( core -> rcmd , line ) ; } free ( line ) ; if ( oseek != UT64_MAX ) { r_core_seek ( core , oseek , 1 ) ; oseek = UT64_MAX ; } if ( pipefd != - 1 ) { r_cons_flush ( ) ; r_cons_pipe_close ( pipefd ) ; } if ( ! p ) { break ; } if ( eos ) { break ; } if ( haveQuote ) { if ( * p == ';' ) { cmd = p + 1 ; } else { if ( * p == \\'\"\\' ) { cmd = p + 1 ; } else { * p = \\'\"\\' ; cmd = p ; } } } else { cmd = p + 1 ; } } return true ; case '(' : if ( cmd [ 1 ] != '*' ) { return r_cmd_call ( core -> rcmd , cmd ) ; } } if ( * cmd != '#' ) { ptr = ( char * ) r_str_lastbut ( cmd , '#' , quotestr ) ; if ( ptr && ( ptr [ 1 ] == '<S2SV_blank>' || ptr [ 1 ] == '\\\\t' ) ) { * ptr = '\\\\0' ; } } if ( * cmd != '#' ) { ptr = ( char * ) r_str_lastbut ( cmd , ';' , quotestr ) ; if ( colon && ptr ) { int ret ; * ptr = '\\\\0' ; if ( r_core_cmd_subst ( core , cmd ) == - 1 ) { return - 1 ; } cmd = ptr + 1 ; ret = r_core_cmd_subst ( core , cmd ) ; * ptr = ';' ; return ret ; } } ptr = ( char * ) r_str_lastbut ( cmd , '|' , quotestr ) ; if ( ptr ) { char * ptr2 = strchr ( cmd , '`' ) ; if ( ! ptr2 || ( ptr2 && ptr2 > ptr ) ) { if ( ! tick || ( tick && tick > ptr ) ) { * ptr = '\\\\0' ; cmd = r_str_clean ( cmd ) ; if ( ! strcmp ( ptr + 1 , \"?\" ) ) { eprintf ( \"Usage:<S2SV_blank><r2command><S2SV_blank>|<S2SV_blank><program|H|>\\\\n\" ) ; eprintf ( \"<S2SV_blank>pd|?<S2SV_blank><S2SV_blank><S2SV_blank>-<S2SV_blank>show<S2SV_blank>this<S2SV_blank>help\\\\n\" ) ; eprintf ( \"<S2SV_blank>pd|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>-<S2SV_blank>disable<S2SV_blank>scr.html<S2SV_blank>and<S2SV_blank>scr.color\\\\n\" ) ; eprintf ( \"<S2SV_blank>pd|H<S2SV_blank><S2SV_blank><S2SV_blank>-<S2SV_blank>enable<S2SV_blank>scr.html,<S2SV_blank>respect<S2SV_blank>scr.color\\\\n\" ) ; return ret ; } else if ( ! strcmp ( ptr + 1 , \"H\" ) ) { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , true ) ; } else if ( ptr [ 1 ] ) { int value = core -> num -> value ; if ( * cmd ) { r_core_cmd_pipe ( core , cmd , ptr + 1 ) ; } else { r_io_system ( core -> io , ptr + 1 ) ; } core -> num -> value = value ; return 0 ; } else { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , 0 ) ; scr_color = r_config_get_i ( core -> config , \"scr.color\" ) ; r_config_set_i ( core -> config , \"scr.color\" , false ) ; } } } } ptr = ( char * ) r_str_lastbut ( cmd , '&' , quotestr ) ; while ( ptr && ptr [ 1 ] == '&' ) { * ptr = '\\\\0' ; ret = r_cmd_call ( core -> rcmd , cmd ) ; if ( ret == - 1 ) { eprintf ( \"command<S2SV_blank>error(%s)\\\\n\" , cmd ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } return ret ; } for ( cmd = ptr + 2 ; cmd && * cmd == '<S2SV_blank>' ; cmd ++ ) ; ptr = strchr ( cmd , '&' ) ; } free ( core -> oobi ) ; core -> oobi = NULL ; ptr = strstr ( cmd , \"?*\" ) ; if ( ptr ) { char * prech = ptr - 1 ; if ( * prech != '~' ) { ptr [ 1 ] = 0 ; if ( * cmd != '#' && strlen ( cmd ) < 5 ) { r_cons_break_push ( NULL , NULL ) ; recursive_help ( core , cmd ) ; r_cons_break_pop ( ) ; r_cons_grep_parsecmd ( ptr + 2 , \"`\" ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } return 0 ; } } } # if 0 ptr = strchr ( cmd , '<' ) ; if ( ptr ) { ptr [ 0 ] = '\\\\0' ; if ( r_cons_singleton ( ) -> is_interactive ) { if ( ptr [ 1 ] == '<' ) { for ( str = ptr + 2 ; str [ 0 ] == '<S2SV_blank>' ; str ++ ) { } eprintf ( \"==><S2SV_blank>Reading<S2SV_blank>from<S2SV_blank>stdin<S2SV_blank>until<S2SV_blank>\\'%s\\'\\\\n\" , str ) ; free ( core -> oobi ) ; core -> oobi = malloc ( 1 ) ; if ( core -> oobi ) { core -> oobi [ 0 ] = '\\\\0' ; } core -> oobi_len = 0 ; for ( ; ; ) { char buf [ 1024 ] ; int ret ; write ( 1 , \"><S2SV_blank>\" , 2 ) ; fgets ( buf , sizeof ( buf ) - 1 , stdin ) ; if ( feof ( stdin ) ) { break ; } if ( * buf ) buf [ strlen ( buf ) - 1 ] = '\\\\0' ; ret = strlen ( buf ) ; core -> oobi_len += ret ; core -> oobi = realloc ( core -> oobi , core -> oobi_len + 1 ) ; if ( core -> oobi ) { if ( ! strcmp ( buf , str ) ) { break ; } strcat ( ( char * ) core -> oobi , buf ) ; } } } else { for ( str = ptr + 1 ; * str == '<S2SV_blank>' ; str ++ ) { } if ( ! * str ) { goto next ; } eprintf ( \"Slurping<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , str ) ; free ( core -> oobi ) ; core -> oobi = ( ut8 * ) r_file_slurp ( str , & core -> oobi_len ) ; if ( ! core -> oobi ) { eprintf ( \"cannot<S2SV_blank>open<S2SV_blank>file\\\\n\" ) ; } else if ( ptr == cmd ) { return r_core_cmd_buffer ( core , ( const char * ) core -> oobi ) ; } } } else { eprintf ( \"Cannot<S2SV_blank>slurp<S2SV_blank>with<S2SV_blank><<<S2SV_blank>in<S2SV_blank>non-interactive<S2SV_blank>mode\\\\n\" ) ; return 0 ; } } next : # endif ptr = strchr ( cmd , '>' ) ; if ( ptr ) { int fdn = 1 ; int pipecolor = r_config_get_i ( core -> config , \"scr.pipecolor\" ) ; int use_editor = false ; int ocolor = r_config_get_i ( core -> config , \"scr.color\" ) ; * ptr = '\\\\0' ; str = r_str_trim_head_tail ( ptr + 1 + ( ptr [ 1 ] == '>' ) ) ; if ( ! * str ) { eprintf ( \"No<S2SV_blank>output?\\\\n\" ) ; goto next2 ; } if ( ptr > ( cmd + 1 ) && ISWHITECHAR ( ptr [ - 2 ] ) ) { char * fdnum = ptr - 1 ; if ( * fdnum == 'H' ) { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , true ) ; pipecolor = true ; * fdnum = 0 ; } else { if ( IS_DIGIT ( * fdnum ) ) { fdn = * fdnum - '0' ; } * fdnum = 0 ; } } r_cons_set_interactive ( false ) ; if ( ! strcmp ( str , \"-\" ) ) { use_editor = true ; str = r_file_temp ( \"dumpedit\" ) ; r_config_set ( core -> config , \"scr.color\" , \"false\" ) ; } if ( fdn > 0 ) { pipefd = r_cons_pipe_open ( str , fdn , ptr [ 1 ] == '>' ) ; if ( pipefd != - 1 ) { if ( ! pipecolor ) { r_config_set_i ( core -> config , \"scr.color\" , 0 ) ; } ret = r_core_cmd_subst ( core , cmd ) ; r_cons_flush ( ) ; r_cons_pipe_close ( pipefd ) ; } } r_cons_set_last_interactive ( ) ; if ( ! pipecolor ) { r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; } if ( use_editor ) { const char * editor = r_config_get ( core -> config , \"cfg.editor\" ) ; if ( editor && * editor ) { r_sys_cmdf ( \"%s<S2SV_blank>\\'%s\\'\" , editor , str ) ; r_file_rm ( str ) ; } else { eprintf ( \"No<S2SV_blank>cfg.editor<S2SV_blank>configured\\\\n\" ) ; } r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; free ( str ) ; } if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } return ret ; } next2 : ptr = strchr ( cmd , '`' ) ; if ( ptr ) { int empty = 0 ; int oneline = 1 ; if ( ptr [ 1 ] == '`' ) { memmove ( ptr , ptr + 1 , strlen ( ptr ) ) ; oneline = 0 ; empty = 1 ; } ptr2 = strchr ( ptr + 1 , '`' ) ; if ( empty ) { } else if ( ! ptr2 ) { eprintf ( \"parse:<S2SV_blank>Missing<S2SV_blank>backtick<S2SV_blank>in<S2SV_blank>expression.\\\\n\" ) ; goto fail ; } else { int value = core -> num -> value ; * ptr = '\\\\0' ; * ptr2 = '\\\\0' ; if ( ptr [ 1 ] == '!' ) { str = r_core_cmd_str_pipe ( core , ptr + 1 ) ; } else { str = r_core_cmd_str ( core , ptr + 1 ) ; } if ( ! str ) { goto fail ; } if ( * str == '|' || * str == '*' ) { eprintf ( \"r_core_cmd_subst_i:<S2SV_blank>invalid<S2SV_blank>backticked<S2SV_blank>command\\\\n\" ) ; free ( str ) ; goto fail ; } if ( oneline && str ) { for ( i = 0 ; str [ i ] ; i ++ ) { if ( str [ i ] == '\\\\n' ) { str [ i ] = '<S2SV_blank>' ; } } } str = r_str_append ( str , ptr2 + 1 ) ; cmd = r_str_append ( strdup ( cmd ) , str ) ; core -> num -> value = value ; ret = r_core_cmd_subst ( core , cmd ) ; free ( cmd ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } free ( str ) ; return ret ; } } core -> fixedblock = false ; if ( r_str_endswith ( cmd , \"~?\" ) && cmd [ 2 ] == '\\\\0' ) { r_cons_grep_help ( ) ; return true ; } if ( * cmd != '.' ) { r_cons_grep_parsecmd ( cmd , quotestr ) ; } if ( * cmd != '(' && * cmd != \\'\"\\' ) { ptr = strchr ( cmd , '@' ) ; if ( ptr == cmd + 1 && * cmd == '?' ) { ptr = NULL ; } } else { ptr = NULL ; } core -> tmpseek = ptr ? true : false ; int rc = 0 ; if ( ptr ) { char * f , * ptr2 = strchr ( ptr + 1 , '!' ) ; ut64 addr = UT64_MAX ; const char * tmpbits = NULL ; const char * offstr = NULL ; ut64 tmpbsz = core -> blocksize ; char * tmpeval = NULL ; ut64 tmpoff = core -> offset ; char * tmpasm = NULL ; int tmpfd = - 1 ; int sz , len ; ut8 * buf ; * ptr = '\\\\0' ; for ( ptr ++ ; * ptr == '<S2SV_blank>' ; ptr ++ ) { } if ( * ptr && ptr [ 1 ] == ':' ) { } else { ptr -- ; } arroba = ( ptr [ 0 ] && ptr [ 1 ] && ptr [ 2 ] ) ? strchr ( ptr + 2 , '@' ) : NULL ; repeat_arroba : if ( arroba ) { * arroba = 0 ; } if ( ptr [ 1 ] == '?' ) { helpCmdAt ( core ) ; } else if ( ptr [ 0 ] && ptr [ 1 ] == ':' && ptr [ 2 ] ) { usemyblock = true ; switch ( ptr [ 0 ] ) { case 'f' : f = r_file_slurp ( ptr + 2 , & sz ) ; if ( f ) { buf = malloc ( sz ) ; if ( buf ) { free ( core -> block ) ; core -> block = buf ; core -> blocksize = sz ; memcpy ( core -> block , f , sz ) ; } else { eprintf ( \"cannot<S2SV_blank>alloc<S2SV_blank>%d\" , sz ) ; } free ( f ) ; } else { eprintf ( \"cannot<S2SV_blank>open<S2SV_blank>\\'%s\\'\\\\n\" , ptr + 3 ) ; } break ; case 'r' : if ( ptr [ 1 ] == ':' ) { ut64 regval ; char * mander = strdup ( ptr + 2 ) ; char * sep = findSeparator ( mander ) ; if ( sep ) { char ch = * sep ; * sep = 0 ; regval = r_debug_reg_get ( core -> dbg , mander ) ; * sep = ch ; char * numexpr = r_str_newf ( \"0x%\" PFMT64x \"%s\" , regval , sep ) ; regval = r_num_math ( core -> num , numexpr ) ; free ( numexpr ) ; } else { regval = r_debug_reg_get ( core -> dbg , ptr + 2 ) ; } r_core_seek ( core , regval , 1 ) ; free ( mander ) ; } break ; case 'b' : tmpbits = strdup ( r_config_get ( core -> config , \"asm.bits\" ) ) ; r_config_set_i ( core -> config , \"asm.bits\" , r_num_math ( core -> num , ptr + 2 ) ) ; break ; case 'i' : { ut64 addr = r_num_math ( core -> num , ptr + 2 ) ; if ( addr ) { r_core_cmdf ( core , \"so<S2SV_blank>%s\" , ptr + 2 ) ; } } break ; case 'e' : tmpeval = parse_tmp_evals ( core , ptr + 2 ) ; break ; case 'x' : if ( ptr [ 1 ] == ':' ) { buf = malloc ( strlen ( ptr + 2 ) + 1 ) ; if ( buf ) { len = r_hex_str2bin ( ptr + 2 , buf ) ; r_core_block_size ( core , R_ABS ( len ) ) ; memcpy ( core -> block , buf , core -> blocksize ) ; core -> fixedblock = true ; free ( buf ) ; } else { eprintf ( \"cannot<S2SV_blank>allocate\\\\n\" ) ; } } else { eprintf ( \"Invalid<S2SV_blank>@x:<S2SV_blank>syntax\\\\n\" ) ; } break ; case 'k' : { char * out = sdb_querys ( core -> sdb , NULL , 0 , ptr + ( ( ptr [ 1 ] ) ? 2 : 1 ) ) ; if ( out ) { r_core_seek ( core , r_num_math ( core -> num , out ) , 1 ) ; free ( out ) ; } } break ; case 'o' : if ( ptr [ 1 ] == ':' ) { tmpfd = core -> io -> raised ; r_io_raise ( core -> io , atoi ( ptr + 2 ) ) ; } break ; case 'a' : if ( ptr [ 1 ] == ':' ) { char * q = strchr ( ptr + 2 , ':' ) ; tmpasm = strdup ( r_config_get ( core -> config , \"asm.arch\" ) ) ; if ( q ) { * q ++ = 0 ; tmpbits = r_config_get ( core -> config , \"asm.bits\" ) ; r_config_set ( core -> config , \"asm.bits\" , q ) ; } r_config_set ( core -> config , \"asm.arch\" , ptr + 2 ) ; } else { eprintf ( \"Usage:<S2SV_blank>pd<S2SV_blank>10<S2SV_blank>@a:arm:32\\\\n\" ) ; } break ; case 's' : len = strlen ( ptr + 2 ) ; r_core_block_size ( core , len ) ; memcpy ( core -> block , ptr + 2 , len ) ; break ; default : goto ignore ; } * ptr = '@' ; goto next_arroba ; } ignore : ptr = r_str_trim_head ( ptr + 1 ) ; ptr -- ; cmd = r_str_clean ( cmd ) ; if ( ptr2 ) { if ( strlen ( ptr + 1 ) == 13 && strlen ( ptr2 + 1 ) == 6 && ! memcmp ( ptr + 1 , \"0x\" , 2 ) && ! memcmp ( ptr2 + 1 , \"0x\" , 2 ) ) { } else if ( strlen ( ptr + 1 ) == 9 && strlen ( ptr2 + 1 ) == 4 ) { } else { * ptr2 = '\\\\0' ; if ( ! ptr2 [ 1 ] ) { goto fail ; } r_core_block_size ( core , r_num_math ( core -> num , ptr2 + 1 ) ) ; } } offstr = r_str_trim_head ( ptr + 1 ) ; addr = r_num_math ( core -> num , offstr ) ; if ( isalpha ( ( unsigned char ) ptr [ 1 ] ) && ! addr ) { if ( ! r_flag_get ( core -> flags , ptr + 1 ) ) { eprintf ( \"Invalid<S2SV_blank>address<S2SV_blank>(%s)\\\\n\" , ptr + 1 ) ; goto fail ; } } else { char ch = * offstr ; if ( ch == '-' || ch == '+' ) { addr = core -> offset + addr ; } } next_arroba : if ( arroba ) { ptr = arroba ; arroba = NULL ; goto repeat_arroba ; } if ( ptr [ 1 ] == '@' ) { if ( ptr [ 2 ] == '@' ) { char * rule = ptr + 3 ; while ( * rule && * rule == '<S2SV_blank>' ) rule ++ ; ret = r_core_cmd_foreach3 ( core , cmd , rule ) ; } else { ret = r_core_cmd_foreach ( core , cmd , ptr + 2 ) ; } } else { bool tmpseek = false ; const char * fromvars [ ] = { \"anal.from\" , \"diff.from\" , \"graph.from\" , \"io.buffer.from\" , \"lines.from\" , \"search.from\" , \"zoom.from\" , NULL } ; const char * tovars [ ] = { \"anal.to\" , \"diff.to\" , \"graph.to\" , \"io.buffer.to\" , \"lines.to\" , \"search.to\" , \"zoom.to\" , NULL } ; ut64 curfrom [ R_ARRAY_SIZE ( fromvars ) - 1 ] , curto [ R_ARRAY_SIZE ( tovars ) - 1 ] ; if ( ptr [ 1 ] == '.' && ptr [ 2 ] == '.' ) { char * range = ptr + 3 ; char * p = strchr ( range , '<S2SV_blank>' ) ; if ( ! p ) { eprintf ( \"Usage:<S2SV_blank>/<S2SV_blank>ABCD<S2SV_blank>@..0x1000<S2SV_blank>0x3000\\\\n\" ) ; free ( tmpeval ) ; free ( tmpasm ) ; goto fail ; } * p = '\\\\x00' ; ut64 from = r_num_math ( core -> num , range ) ; ut64 to = r_num_math ( core -> num , p + 1 ) ; for ( i = 0 ; fromvars [ i ] ; i ++ ) { curfrom [ i ] = r_config_get_i ( core -> config , fromvars [ i ] ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { curto [ i ] = r_config_get_i ( core -> config , tovars [ i ] ) ; } for ( i = 0 ; fromvars [ i ] ; i ++ ) { r_config_set_i ( core -> config , fromvars [ i ] , from ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { r_config_set_i ( core -> config , tovars [ i ] , to ) ; } tmpseek = true ; } if ( usemyblock ) { if ( addr != UT64_MAX ) { core -> offset = addr ; } ret = r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) ; } else { if ( addr != UT64_MAX ) { if ( ! ptr [ 1 ] || r_core_seek ( core , addr , 1 ) ) { r_core_block_read ( core ) ; ret = r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) ; } else { ret = 0 ; } } } if ( tmpseek ) { for ( i = 0 ; fromvars [ i ] ; i ++ ) { r_config_set_i ( core -> config , fromvars [ i ] , curfrom [ i ] ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { r_config_set_i ( core -> config , tovars [ i ] , curto [ i ] ) ; } } } if ( ptr2 ) { * ptr2 = '!' ; r_core_block_size ( core , tmpbsz ) ; } if ( tmpasm ) { r_config_set ( core -> config , \"asm.arch\" , tmpasm ) ; tmpasm = NULL ; } if ( tmpfd != - 1 ) { r_io_raise ( core -> io , tmpfd ) ; } if ( tmpbits ) { r_config_set ( core -> config , \"asm.bits\" , tmpbits ) ; tmpbits = NULL ; } if ( tmpeval ) { r_core_cmd0 ( core , tmpeval ) ; R_FREE ( tmpeval ) ; } r_core_seek ( core , tmpoff , 1 ) ; * ptr = '@' ; rc = ret ; goto beach ; } rc = cmd ? r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) : false ; beach : if ( scr_html != - 1 ) { r_cons_flush ( ) ; r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } core -> fixedblock = false ; return rc ; fail : rc = - 1 ; goto beach ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; p = cmd [ 0 ] ? <S2SV_ModStart> + 1 ) : NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static struct bpf_verifier_state * push_stack ( struct bpf_verifier_env * env , <S2SV_StartBug> int insn_idx , int prev_insn_idx ) <S2SV_EndBug> { struct bpf_verifier_state * cur = env -> cur_state ; struct bpf_verifier_stack_elem * elem ; int err ; elem = kzalloc ( sizeof ( struct bpf_verifier_stack_elem ) , GFP_KERNEL ) ; if ( ! elem ) goto err ; elem -> insn_idx = insn_idx ; elem -> prev_insn_idx = prev_insn_idx ; elem -> next = env -> head ; env -> head = elem ; env -> stack_size ++ ; err = copy_verifier_state ( & elem -> st , cur ) ; if ( err ) <S2SV_StartBug> goto err ; <S2SV_EndBug> if ( env -> stack_size > BPF_COMPLEXITY_LIMIT_STACK ) { verbose ( env , \"BPF<S2SV_blank>program<S2SV_blank>is<S2SV_blank>too<S2SV_blank>complex\\\\n\" ) ; goto err ; } return & elem -> st ; err : free_verifier_state ( env -> cur_state , true ) ; env -> cur_state = NULL ; while ( ! pop_stack ( env , NULL , NULL ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int prev_insn_idx , bool speculative <S2SV_ModStart> ) goto err ; elem -> st . speculative |= speculative\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3315\n\n```\nCWE-59 int main ( int argc , char * * argv ) { int fd = xopen ( \"/dev/null\" , O_RDWR ) ; while ( fd < 2 ) fd = xdup ( fd ) ; if ( fd > 2 ) close ( fd ) ; if ( argc < 8 ) { error_msg_and_die ( \"Usage:<S2SV_blank>%s<S2SV_blank>SIGNO<S2SV_blank>CORE_SIZE_LIMIT<S2SV_blank>PID<S2SV_blank>UID<S2SV_blank>GID<S2SV_blank>TIME<S2SV_blank>BINARY_NAME<S2SV_blank>[HOSTNAME]\" , argv [ 0 ] ) ; } if ( strchr ( argv [ 1 ] , '<S2SV_blank>' ) ) { int i ; for ( i = 1 ; argv [ i ] ; i ++ ) { strchrnul ( argv [ i ] , '<S2SV_blank>' ) [ 0 ] = '\\\\0' ; } } logmode = LOGMODE_JOURNAL ; load_abrt_conf ( ) ; bool setting_MakeCompatCore ; bool setting_SaveBinaryImage ; { map_string_t * settings = new_map_string ( ) ; load_abrt_plugin_conf_file ( \"CCpp.conf\" , settings ) ; const char * value ; value = get_map_string_item_or_NULL ( settings , \"MakeCompatCore\" ) ; setting_MakeCompatCore = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"SaveBinaryImage\" ) ; setting_SaveBinaryImage = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"VerboseLog\" ) ; if ( value ) g_verbose = xatoi_positive ( value ) ; free_map_string ( settings ) ; } errno = 0 ; const char * signal_str = argv [ 1 ] ; int signal_no = xatoi_positive ( signal_str ) ; off_t ulimit_c = strtoull ( argv [ 2 ] , NULL , 10 ) ; if ( ulimit_c < 0 ) { ulimit_c = ~ ( ( off_t ) 1 << ( sizeof ( off_t ) * 8 - 1 ) ) ; } const char * pid_str = argv [ 3 ] ; pid_t pid = xatoi_positive ( argv [ 3 ] ) ; uid_t uid = xatoi_positive ( argv [ 4 ] ) ; if ( errno || pid <= 0 ) { perror_msg_and_die ( \"PID<S2SV_blank>\\'%s\\'<S2SV_blank>or<S2SV_blank>limit<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>bogus\" , argv [ 3 ] , argv [ 2 ] ) ; } { char * s = xmalloc_fopen_fgetline_fclose ( VAR_RUN \"/abrt/saved_core_pattern\" ) ; if ( s && s [ 0 ] != '|' ) core_basename = s ; else free ( s ) ; } struct utsname uts ; if ( ! argv [ 8 ] ) { uname ( & uts ) ; argv [ 8 ] = uts . nodename ; } char path [ PATH_MAX ] ; int src_fd_binary = - 1 ; char * executable = get_executable ( pid , setting_SaveBinaryImage ? & src_fd_binary : NULL ) ; if ( executable && strstr ( executable , \"/abrt-hook-ccpp\" ) ) { error_msg_and_die ( \"PID<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>\\'%s\\',<S2SV_blank>not<S2SV_blank>dumping<S2SV_blank>it<S2SV_blank>to<S2SV_blank>avoid<S2SV_blank>recursion\" , ( long ) pid , executable ) ; } user_pwd = get_cwd ( pid ) ; log_notice ( \"user_pwd:\\'%s\\'\" , user_pwd ) ; sprintf ( path , \"/proc/%lu/status\" , ( long ) pid ) ; proc_pid_status = xmalloc_xopen_read_close ( path , NULL ) ; uid_t fsuid = uid ; uid_t tmp_fsuid = get_fsuid ( ) ; int suid_policy = dump_suid_policy ( ) ; if ( tmp_fsuid != uid ) { fsuid = 0 ; if ( suid_policy == DUMP_SUID_UNSAFE ) { fsuid = tmp_fsuid ; } } if ( setting_MakeCompatCore && ulimit_c != 0 ) user_core_fd = open_user_core ( uid , fsuid , pid , & argv [ 1 ] ) ; if ( executable == NULL ) { error_msg ( \"Can\\'t<S2SV_blank>read<S2SV_blank>/proc/%lu/exe<S2SV_blank>link\" , ( long ) pid ) ; goto create_user_core ; } const char * signame = NULL ; switch ( signal_no ) { case SIGILL : signame = \"ILL\" ; break ; case SIGFPE : signame = \"FPE\" ; break ; case SIGSEGV : signame = \"SEGV\" ; break ; case SIGBUS : signame = \"BUS\" ; break ; case SIGABRT : signame = \"ABRT\" ; break ; case SIGTRAP : signame = \"TRAP\" ; break ; default : goto create_user_core ; } if ( ! daemon_is_ok ( ) ) { log ( \"abrtd<S2SV_blank>is<S2SV_blank>not<S2SV_blank>running.<S2SV_blank>If<S2SV_blank>it<S2SV_blank>crashed,<S2SV_blank>\" \"/proc/sys/kernel/core_pattern<S2SV_blank>contains<S2SV_blank>a<S2SV_blank>stale<S2SV_blank>value,<S2SV_blank>\" \"consider<S2SV_blank>resetting<S2SV_blank>it<S2SV_blank>to<S2SV_blank>\\'core\\'\" ) ; goto create_user_core ; } if ( g_settings_nMaxCrashReportsSize > 0 ) { if ( low_free_space ( g_settings_nMaxCrashReportsSize , g_settings_dump_location ) ) goto create_user_core ; } snprintf ( path , sizeof ( path ) , \"%s/last-ccpp\" , g_settings_dump_location ) ; if ( check_recent_crash_file ( path , executable ) ) { goto create_user_core ; } const char * last_slash = strrchr ( executable , '/' ) ; if ( last_slash && strncmp ( ++ last_slash , \"abrt\" , 4 ) == 0 ) { snprintf ( path , sizeof ( path ) , \"%s/%s-coredump\" , g_settings_dump_location , last_slash ) ; int abrt_core_fd = xopen3 ( path , O_WRONLY | O_CREAT | O_TRUNC , 0600 ) ; off_t core_size = copyfd_eof ( STDIN_FILENO , abrt_core_fd , COPYFD_SPARSE ) ; if ( core_size < 0 || fsync ( abrt_core_fd ) != 0 ) { unlink ( path ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; return 0 ; } unsigned path_len = snprintf ( path , sizeof ( path ) , \"%s/ccpp-%s-%lu.new\" , g_settings_dump_location , iso_date_string ( NULL ) , ( long ) pid ) ; if ( path_len >= ( sizeof ( path ) - sizeof ( \"/\" FILENAME_COREDUMP ) ) ) { goto create_user_core ; } dd = dd_create ( path , fsuid , DEFAULT_DUMP_DIR_MODE ) ; if ( dd ) { char * rootdir = get_rootdir ( pid ) ; dd_create_basic_files ( dd , fsuid , ( rootdir && strcmp ( rootdir , \"/\" ) != 0 ) ? rootdir : NULL ) ; char source_filename [ sizeof ( \"/proc/%lu/somewhat_long_name\" ) + sizeof ( long ) * 3 ] ; int source_base_ofs = sprintf ( source_filename , \"/proc/%lu/smaps\" , ( long ) pid ) ; source_base_ofs -= strlen ( \"smaps\" ) ; char * dest_filename = concat_path_file ( dd -> dd_dirname , \"also_somewhat_longish_name\" ) ; char * dest_base = strrchr ( dest_filename , '/' ) + 1 ; strcpy ( source_filename + source_base_ofs , \"maps\" ) ; strcpy ( dest_base , FILENAME_MAPS ) ; <S2SV_StartBug> copy_file ( source_filename , dest_filename , DEFAULT_DUMP_DIR_MODE ) ; <S2SV_EndBug> <S2SV_StartBug> IGNORE_RESULT ( chown ( dest_filename , dd -> dd_uid , dd -> dd_gid ) ) ; <S2SV_EndBug> strcpy ( source_filename + source_base_ofs , \"limits\" ) ; strcpy ( dest_base , FILENAME_LIMITS ) ; <S2SV_StartBug> copy_file ( source_filename , dest_filename , DEFAULT_DUMP_DIR_MODE ) ; <S2SV_EndBug> <S2SV_StartBug> IGNORE_RESULT ( chown ( dest_filename , dd -> dd_uid , dd -> dd_gid ) ) ; <S2SV_EndBug> strcpy ( source_filename + source_base_ofs , \"cgroup\" ) ; strcpy ( dest_base , FILENAME_CGROUP ) ; <S2SV_StartBug> copy_file ( source_filename , dest_filename , DEFAULT_DUMP_DIR_MODE ) ; <S2SV_EndBug> <S2SV_StartBug> IGNORE_RESULT ( chown ( dest_filename , dd -> dd_uid , dd -> dd_gid ) ) ; <S2SV_EndBug> strcpy ( dest_base , FILENAME_OPEN_FDS ) ; <S2SV_StartBug> if ( dump_fd_info ( dest_filename , source_filename , source_base_ofs ) ) <S2SV_EndBug> <S2SV_StartBug> IGNORE_RESULT ( chown ( dest_filename , dd -> dd_uid , dd -> dd_gid ) ) ; <S2SV_EndBug> free ( dest_filename ) ; dd_save_text ( dd , FILENAME_ANALYZER , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_TYPE , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_EXECUTABLE , executable ) ; dd_save_text ( dd , FILENAME_PID , pid_str ) ; dd_save_text ( dd , FILENAME_PROC_PID_STATUS , proc_pid_status ) ; if ( user_pwd ) dd_save_text ( dd , FILENAME_PWD , user_pwd ) ; if ( rootdir ) { if ( strcmp ( rootdir , \"/\" ) != 0 ) dd_save_text ( dd , FILENAME_ROOTDIR , rootdir ) ; } char * reason = xasprintf ( \"%s<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>SIG%s\" , last_slash , signame ? signame : signal_str ) ; dd_save_text ( dd , FILENAME_REASON , reason ) ; free ( reason ) ; char * cmdline = get_cmdline ( pid ) ; dd_save_text ( dd , FILENAME_CMDLINE , cmdline ? : \"\" ) ; free ( cmdline ) ; char * environ = get_environ ( pid ) ; dd_save_text ( dd , FILENAME_ENVIRON , environ ? : \"\" ) ; free ( environ ) ; char * fips_enabled = xmalloc_fopen_fgetline_fclose ( \"/proc/sys/crypto/fips_enabled\" ) ; if ( fips_enabled ) { if ( strcmp ( fips_enabled , \"0\" ) != 0 ) dd_save_text ( dd , \"fips_enabled\" , fips_enabled ) ; free ( fips_enabled ) ; } dd_save_text ( dd , FILENAME_ABRT_VERSION , VERSION ) ; if ( src_fd_binary > 0 ) { strcpy ( path + path_len , \"/\" FILENAME_BINARY ) ; int dst_fd = create_or_die ( path ) ; off_t sz = copyfd_eof ( src_fd_binary , dst_fd , COPYFD_SPARSE ) ; if ( fsync ( dst_fd ) != 0 || close ( dst_fd ) != 0 || sz < 0 ) { dd_delete ( dd ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } close ( src_fd_binary ) ; } strcpy ( path + path_len , \"/\" FILENAME_COREDUMP ) ; int abrt_core_fd = create_or_die ( path ) ; off_t core_size = copyfd_sparse ( STDIN_FILENO , abrt_core_fd , user_core_fd , ulimit_c ) ; if ( fsync ( abrt_core_fd ) != 0 || close ( abrt_core_fd ) != 0 || core_size < 0 ) { unlink ( path ) ; dd_delete ( dd ) ; if ( user_core_fd >= 0 ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; } error_msg_and_die ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , path ) ; } if ( user_core_fd >= 0 && ( fsync ( user_core_fd ) != 0 || close ( user_core_fd ) != 0 || ( ulimit_c == 0 || core_size > ulimit_c ) ) ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; } { char * java_log = xasprintf ( \"/tmp/jvm-%lu/hs_error.log\" , ( long ) pid ) ; int src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; if ( src_fd < 0 ) { java_log = xasprintf ( \"%s/hs_err_pid%lu.log\" , user_pwd , ( long ) pid ) ; src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; } if ( src_fd >= 0 ) { strcpy ( path + path_len , \"/hs_err.log\" ) ; int dst_fd = create_or_die ( path ) ; off_t sz = copyfd_eof ( src_fd , dst_fd , COPYFD_SPARSE ) ; if ( close ( dst_fd ) != 0 || sz < 0 ) { dd_delete ( dd ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } close ( src_fd ) ; } } dd_close ( dd ) ; path [ path_len ] = '\\\\0' ; char * newpath = xstrndup ( path , path_len - ( sizeof ( \".new\" ) - 1 ) ) ; if ( rename ( path , newpath ) == 0 ) strcpy ( path , newpath ) ; free ( newpath ) ; log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; notify_new_path ( path ) ; if ( g_settings_nMaxCrashReportsSize > 0 ) { unsigned maxsize = g_settings_nMaxCrashReportsSize + g_settings_nMaxCrashReportsSize / 4 ; maxsize |= 63 ; trim_problem_dirs ( g_settings_dump_location , maxsize * ( double ) ( 1024 * 1024 ) , path ) ; } free ( rootdir ) ; return 0 ; } create_user_core : if ( user_core_fd >= 0 ) { off_t core_size = copyfd_size ( STDIN_FILENO , user_core_fd , ulimit_c , COPYFD_SPARSE ) ; if ( fsync ( user_core_fd ) != 0 || close ( user_core_fd ) != 0 || core_size < 0 ) { perror_msg ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , full_core_basename ) ; xchdir ( user_pwd ) ; unlink ( core_basename ) ; return 1 ; } if ( ulimit_c == 0 || core_size > ulimit_c ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; return 1 ; } log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , full_core_basename , ( long long ) core_size ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FILENAME_MAPS ) ; copy_file_ext <S2SV_ModEnd> ( source_filename , <S2SV_ModStart> , dest_filename , 0640 <S2SV_ModEnd> , dd -> <S2SV_ModStart> dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL <S2SV_ModEnd> ) ; strcpy <S2SV_ModStart> FILENAME_LIMITS ) ; copy_file_ext <S2SV_ModEnd> ( source_filename , <S2SV_ModStart> , dest_filename , 0640 <S2SV_ModEnd> , dd -> <S2SV_ModStart> dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL <S2SV_ModEnd> ) ; strcpy <S2SV_ModStart> FILENAME_CGROUP ) ; copy_file_ext <S2SV_ModEnd> ( source_filename , <S2SV_ModStart> , dest_filename , 0640 <S2SV_ModEnd> , dd -> <S2SV_ModStart> dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL <S2SV_ModEnd> ) ; strcpy <S2SV_ModStart> FILENAME_OPEN_FDS ) ; <S2SV_ModEnd> dump_fd_info ( dest_filename <S2SV_ModStart> source_filename , source_base_ofs <S2SV_ModEnd> , dd -> <S2SV_ModStart> dd -> dd_gid <S2SV_ModEnd> ) ; free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int raw_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; size_t copied = 0 ; int err = - EOPNOTSUPP ; struct sockaddr_in * sin = ( struct sockaddr_in * ) msg -> msg_name ; struct sk_buff * skb ; if ( flags & MSG_OOB ) <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( * sin ) ; if ( flags & MSG_ERRQUEUE ) { err = ip_recv_error ( sk , msg , len ) ; goto out ; } skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; sin -> sin_port = 0 ; memset ( & sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; if ( flags & MSG_TRUNC ) copied = skb -> len ; done : skb_free_datagram ( sk , skb ) ; out : if ( err ) return err ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto out <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) ; * addr_len = sizeof ( * sin ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5766\n\n```\nCWE-190 static int _gd2GetHeader ( gdIOCtxPtr in , int * sx , int * sy , int * cs , int * vers , int * fmt , int * ncx , int * ncy , t_chunk_info * * chunkIdx ) { int i ; int ch ; char id [ 5 ] ; t_chunk_info * cidx ; int sidx ; int nc ; GD2_DBG ( php_gd_error ( \"Reading<S2SV_blank>gd2<S2SV_blank>header<S2SV_blank>info\" ) ) ; for ( i = 0 ; i < 4 ; i ++ ) { ch = gdGetC ( in ) ; if ( ch == EOF ) { goto fail1 ; } id [ i ] = ch ; } id [ 4 ] = 0 ; GD2_DBG ( php_gd_error ( \"Got<S2SV_blank>file<S2SV_blank>code:<S2SV_blank>%s\" , id ) ) ; if ( strcmp ( id , GD2_ID ) != 0 ) { GD2_DBG ( php_gd_error ( \"Not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>gd2<S2SV_blank>file\" ) ) ; goto fail1 ; } if ( gdGetWord ( vers , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"Version:<S2SV_blank>%d\" , * vers ) ) ; if ( ( * vers != 1 ) && ( * vers != 2 ) ) { GD2_DBG ( php_gd_error ( \"Bad<S2SV_blank>version:<S2SV_blank>%d\" , * vers ) ) ; goto fail1 ; } if ( ! gdGetWord ( sx , in ) ) { GD2_DBG ( php_gd_error ( \"Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>x-size\" ) ) ; goto fail1 ; } if ( ! gdGetWord ( sy , in ) ) { GD2_DBG ( php_gd_error ( \"Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>y-size\" ) ) ; goto fail1 ; } GD2_DBG ( php_gd_error ( \"Image<S2SV_blank>is<S2SV_blank>%dx%d\" , * sx , * sy ) ) ; if ( gdGetWord ( cs , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"ChunkSize:<S2SV_blank>%d\" , * cs ) ) ; if ( ( * cs < GD2_CHUNKSIZE_MIN ) || ( * cs > GD2_CHUNKSIZE_MAX ) ) { GD2_DBG ( php_gd_error ( \"Bad<S2SV_blank>chunk<S2SV_blank>size:<S2SV_blank>%d\" , * cs ) ) ; goto fail1 ; } if ( gdGetWord ( fmt , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"Format:<S2SV_blank>%d\" , * fmt ) ) ; if ( ( * fmt != GD2_FMT_RAW ) && ( * fmt != GD2_FMT_COMPRESSED ) && ( * fmt != GD2_FMT_TRUECOLOR_RAW ) && ( * fmt != GD2_FMT_TRUECOLOR_COMPRESSED ) ) { GD2_DBG ( php_gd_error ( \"Bad<S2SV_blank>data<S2SV_blank>format:<S2SV_blank>%d\" , * fmt ) ) ; goto fail1 ; } if ( gdGetWord ( ncx , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"%d<S2SV_blank>Chunks<S2SV_blank>Wide\" , * ncx ) ) ; if ( gdGetWord ( ncy , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"%d<S2SV_blank>Chunks<S2SV_blank>vertically\" , * ncy ) ) ; if ( gd2_compressed ( * fmt ) ) { nc = ( * ncx ) * ( * ncy ) ; GD2_DBG ( php_gd_error ( \"Reading<S2SV_blank>%d<S2SV_blank>chunk<S2SV_blank>index<S2SV_blank>entries\" , nc ) ) ; <S2SV_StartBug> sidx = sizeof ( t_chunk_info ) * nc ; <S2SV_EndBug> if ( sidx <= 0 ) { goto fail1 ; } <S2SV_StartBug> cidx = gdCalloc ( sidx , 1 ) ; <S2SV_EndBug> for ( i = 0 ; i < nc ; i ++ ) { if ( gdGetInt ( & cidx [ i ] . offset , in ) != 1 ) { gdFree ( cidx ) ; goto fail1 ; } if ( gdGetInt ( & cidx [ i ] . size , in ) != 1 ) { gdFree ( cidx ) ; goto fail1 ; } if ( cidx [ i ] . offset < 0 || cidx [ i ] . size < 0 ) { gdFree ( cidx ) ; goto fail1 ; } } * chunkIdx = cidx ; } GD2_DBG ( php_gd_error ( \"gd2<S2SV_blank>header<S2SV_blank>complete\" ) ) ; return 1 ; fail1 : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( overflow2 ( sidx , nc ) ) { goto fail1 ; } <S2SV_ModStart> 1 ) ; if ( cidx == NULL ) { goto fail1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000251\n\n```\nCWE-787 static int l2cap_parse_conf_req ( struct sock * sk , void * data ) { struct l2cap_pinfo * pi = l2cap_pi ( sk ) ; struct l2cap_conf_rsp * rsp = data ; void * ptr = rsp -> data ; void * req = pi -> conf_req ; int len = pi -> conf_len ; int type , hint , olen ; unsigned long val ; struct l2cap_conf_rfc rfc = { . mode = L2CAP_MODE_BASIC } ; u16 mtu = L2CAP_DEFAULT_MTU ; u16 result = L2CAP_CONF_SUCCESS ; BT_DBG ( \"sk<S2SV_blank>%p\" , sk ) ; while ( len >= L2CAP_CONF_OPT_SIZE ) { len -= l2cap_get_conf_opt ( & req , & type , & olen , & val ) ; hint = type & L2CAP_CONF_HINT ; type &= L2CAP_CONF_MASK ; switch ( type ) { case L2CAP_CONF_MTU : mtu = val ; break ; case L2CAP_CONF_FLUSH_TO : pi -> flush_to = val ; break ; case L2CAP_CONF_QOS : break ; case L2CAP_CONF_RFC : if ( olen == sizeof ( rfc ) ) memcpy ( & rfc , ( void * ) val , olen ) ; break ; default : if ( hint ) break ; result = L2CAP_CONF_UNKNOWN ; * ( ( u8 * ) ptr ++ ) = type ; break ; } } <S2SV_StartBug> if ( result == L2CAP_CONF_SUCCESS ) { <S2SV_EndBug> <S2SV_StartBug> if ( rfc . mode == L2CAP_MODE_BASIC ) { <S2SV_EndBug> <S2SV_StartBug> if ( mtu < pi -> omtu ) <S2SV_EndBug> result = L2CAP_CONF_UNACCEPT ; <S2SV_StartBug> else { <S2SV_EndBug> pi -> omtu = mtu ; pi -> conf_state |= L2CAP_CONF_OUTPUT_DONE ; <S2SV_StartBug> } <S2SV_EndBug> l2cap_add_conf_opt ( & ptr , L2CAP_CONF_MTU , 2 , pi -> omtu ) ; } else { result = L2CAP_CONF_UNACCEPT ; memset ( & rfc , 0 , sizeof ( rfc ) ) ; rfc . mode = L2CAP_MODE_BASIC ; l2cap_add_conf_opt ( & ptr , L2CAP_CONF_RFC , sizeof ( rfc ) , ( unsigned long ) & rfc ) ; } } rsp -> scid = cpu_to_le16 ( pi -> dcid ) ; rsp -> result = cpu_to_le16 ( result ) ; rsp -> flags = cpu_to_le16 ( 0x0000 ) ; return ptr - data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( pi -> num_conf_rsp || pi -> num_conf_req ) goto done ; switch ( pi -> mode ) { case L2CAP_MODE_STREAMING : case L2CAP_MODE_ERTM : pi -> conf_state |= L2CAP_CONF_STATE2_DEVICE ; if ( ! l2cap_mode_supported ( pi -> mode , pi -> conn -> feat_mask ) ) return - ECONNREFUSED ; break ; default : pi -> mode = l2cap_select_mode ( rfc . mode , pi -> conn -> feat_mask ) ; break ; } done : if ( pi -> mode != rfc . mode ) { result = L2CAP_CONF_UNACCEPT ; rfc . mode = pi -> mode ; if ( pi -> num_conf_rsp == 1 ) return - ECONNREFUSED ; l2cap_add_conf_opt ( & ptr , L2CAP_CONF_RFC , sizeof ( rfc ) , ( unsigned long ) & rfc ) ; } if ( <S2SV_ModStart> { if ( mtu < L2CAP_DEFAULT_MIN_MTU ) result = L2CAP_CONF_UNACCEPT ; else { <S2SV_ModEnd> pi -> omtu <S2SV_ModStart> pi -> omtu = mtu ; pi -> conf_state |= L2CAP_CONF_MTU_DONE ; } l2cap_add_conf_opt ( & ptr , L2CAP_CONF_MTU , 2 , pi -> omtu ) ; switch ( rfc . mode ) { case L2CAP_MODE_BASIC : pi -> fcs = L2CAP_FCS_NONE ; pi -> conf_state |= L2CAP_CONF_MODE_DONE ; break ; case L2CAP_MODE_ERTM : pi -> remote_tx_win = rfc . txwin_size ; pi -> remote_max_tx = rfc . max_transmit ; pi -> max_pdu_size = rfc . max_pdu_size ; rfc . retrans_timeout = L2CAP_DEFAULT_RETRANS_TO ; rfc . monitor_timeout = L2CAP_DEFAULT_MONITOR_TO ; pi -> conf_state |= L2CAP_CONF_MODE_DONE ; break ; case L2CAP_MODE_STREAMING : pi -> remote_tx_win = rfc . txwin_size ; pi -> max_pdu_size = rfc . max_pdu_size ; pi -> conf_state |= L2CAP_CONF_MODE_DONE ; break ; default : <S2SV_ModEnd> result = L2CAP_CONF_UNACCEPT <S2SV_ModStart> = L2CAP_CONF_UNACCEPT ; memset ( & rfc , 0 , sizeof ( rfc ) ) ; rfc . mode = pi -> mode ; } l2cap_add_conf_opt ( & ptr , L2CAP_CONF_RFC , sizeof ( rfc ) , ( unsigned long ) & rfc ) ; if ( result == L2CAP_CONF_SUCCESS ) <S2SV_ModEnd> pi -> conf_state <S2SV_ModStart> |= L2CAP_CONF_OUTPUT_DONE ; <S2SV_ModEnd> } rsp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int inv_remap_prob ( int v , int m ) { <S2SV_StartBug> static int inv_map_table [ MAX_PROB - 1 ] = { <S2SV_EndBug> <S2SV_StartBug> 6 , 19 , 32 , 45 , 58 , 71 , 84 , 97 , 110 , 123 , 136 , 149 , 162 , 175 , 188 , <S2SV_EndBug> 201 , 214 , 227 , 240 , 253 , 0 , 1 , 2 , 3 , 4 , 5 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 72 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 85 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 98 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 111 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 124 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 137 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 , 148 , 150 , 151 , 152 , 153 , 154 , 155 , 156 , 157 , 158 , 159 , 160 , 161 , 163 , 164 , 165 , 166 , 167 , 168 , 169 , 170 , 171 , 172 , 173 , 174 , 176 , 177 , 178 , 179 , 180 , 181 , 182 , 183 , 184 , 185 , 186 , 187 , 189 , 190 , 191 , 192 , 193 , 194 , 195 , 196 , 197 , 198 , 199 , 200 , 202 , 203 , 204 , 205 , 206 , 207 , 208 , 209 , 210 , 211 , 212 , 213 , 215 , 216 , 217 , 218 , 219 , 220 , 221 , 222 , 223 , 224 , 225 , 226 , 228 , 229 , 230 , 231 , 232 , 233 , 234 , 235 , 236 , 237 , 238 , 239 , 241 , 242 , 243 , 244 , 245 , 246 , 247 , 248 , 249 , 250 , 251 , 252 } ; v = clamp ( v , 0 , 253 ) ; v = inv_map_table [ v ] ; m -- ; if ( ( m << 1 ) <= MAX_PROB ) { <S2SV_StartBug> return 1 + inv_recenter_nonneg ( v + 1 , m ) ; <S2SV_EndBug> } else { <S2SV_StartBug> return MAX_PROB - inv_recenter_nonneg ( v + 1 , MAX_PROB - 1 - m ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inv_map_table [ MAX_PROB <S2SV_ModEnd> ] = { <S2SV_ModStart> ] = { 7 , 20 , 33 , 46 , 59 , 72 , 85 , 98 , 111 , 124 , 137 , 150 , 163 , 176 , 189 , 202 , 215 , 228 , 241 , 254 , 1 , 2 , 3 , 4 , 5 , 6 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 , 69 , 70 , 71 , 73 , 74 , 75 , 76 , 77 , 78 , 79 , 80 , 81 , 82 , 83 , 84 , 86 , 87 , 88 , 89 , 90 , 91 , 92 , 93 , 94 , 95 , 96 , 97 , 99 , 100 , 101 , 102 , 103 , 104 , 105 , 106 , 107 , 108 , 109 , 110 , 112 , 113 , 114 , 115 , 116 , 117 , 118 , 119 , 120 , 121 , 122 , 123 , 125 , 126 , 127 , 128 , 129 , 130 , 131 , 132 , 133 , 134 , 135 , 136 , 138 , 139 , 140 , 141 , 142 , 143 , 144 , 145 , 146 , 147 , 148 , 149 , 151 , 152 , 153 , 154 , 155 , 156 , 157 , 158 , 159 , 160 , 161 , 162 , 164 , 165 , 166 , 167 , 168 , 169 , 170 , 171 , 172 , 173 , 174 , 175 , 177 , 178 , 179 , 180 , 181 , 182 , 183 , 184 , 185 , 186 , 187 , 188 , 190 , 191 , 192 , 193 , 194 , 195 , 196 , 197 , 198 , 199 , 200 , 201 , 203 , 204 , 205 , 206 , 207 , 208 , 209 , 210 , 211 , 212 , 213 , 214 , 216 , 217 , 218 , 219 , 220 , 221 , 222 , 223 , 224 , 225 , 226 , 227 , 229 , 230 , 231 , 232 , 233 , 234 , 235 , 236 , 237 , 238 , 239 , 240 , 242 , 243 , 244 , 245 , 246 , 247 , 248 , 249 , 250 , 251 , 252 , 253 , 253 } ; assert ( v < ( int ) ( sizeof ( inv_map_table ) / sizeof ( inv_map_table [ 0 ] ) ) <S2SV_ModEnd> ) ; v <S2SV_ModStart> inv_recenter_nonneg ( v <S2SV_ModEnd> , m ) <S2SV_ModStart> inv_recenter_nonneg ( v <S2SV_ModEnd> , MAX_PROB -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6638\n\n```\nCWE-399 int tcp_rcv_state_process ( struct sock * sk , struct sk_buff * skb , const struct tcphdr * th , unsigned int len ) { struct tcp_sock * tp = tcp_sk ( sk ) ; struct inet_connection_sock * icsk = inet_csk ( sk ) ; int queued = 0 ; int res ; tp -> rx_opt . saw_tstamp = 0 ; switch ( sk -> sk_state ) { case TCP_CLOSE : goto discard ; case TCP_LISTEN : if ( th -> ack ) return 1 ; if ( th -> rst ) goto discard ; if ( th -> syn ) { <S2SV_StartBug> if ( icsk -> icsk_af_ops -> conn_request ( sk , skb ) < 0 ) <S2SV_EndBug> return 1 ; kfree_skb ( skb ) ; return 0 ; } goto discard ; case TCP_SYN_SENT : queued = tcp_rcv_synsent_state_process ( sk , skb , th , len ) ; if ( queued >= 0 ) return queued ; tcp_urg ( sk , skb , th ) ; __kfree_skb ( skb ) ; tcp_data_snd_check ( sk ) ; return 0 ; } res = tcp_validate_incoming ( sk , skb , th , 0 ) ; if ( res <= 0 ) return - res ; if ( th -> ack ) { int acceptable = tcp_ack ( sk , skb , FLAG_SLOWPATH ) > 0 ; switch ( sk -> sk_state ) { case TCP_SYN_RECV : if ( acceptable ) { tp -> copied_seq = tp -> rcv_nxt ; smp_mb ( ) ; tcp_set_state ( sk , TCP_ESTABLISHED ) ; sk -> sk_state_change ( sk ) ; if ( sk -> sk_socket ) sk_wake_async ( sk , SOCK_WAKE_IO , POLL_OUT ) ; tp -> snd_una = TCP_SKB_CB ( skb ) -> ack_seq ; tp -> snd_wnd = ntohs ( th -> window ) << tp -> rx_opt . snd_wscale ; tcp_init_wl ( tp , TCP_SKB_CB ( skb ) -> seq ) ; if ( tp -> rx_opt . tstamp_ok ) tp -> advmss -= TCPOLEN_TSTAMP_ALIGNED ; icsk -> icsk_af_ops -> rebuild_header ( sk ) ; tcp_init_metrics ( sk ) ; tcp_init_congestion_control ( sk ) ; tp -> lsndtime = tcp_time_stamp ; tcp_mtup_init ( sk ) ; tcp_initialize_rcv_mss ( sk ) ; tcp_init_buffer_space ( sk ) ; tcp_fast_path_on ( tp ) ; } else { return 1 ; } break ; case TCP_FIN_WAIT1 : if ( tp -> snd_una == tp -> write_seq ) { tcp_set_state ( sk , TCP_FIN_WAIT2 ) ; sk -> sk_shutdown |= SEND_SHUTDOWN ; dst_confirm ( __sk_dst_get ( sk ) ) ; if ( ! sock_flag ( sk , SOCK_DEAD ) ) sk -> sk_state_change ( sk ) ; else { int tmo ; if ( tp -> linger2 < 0 || ( TCP_SKB_CB ( skb ) -> end_seq != TCP_SKB_CB ( skb ) -> seq && after ( TCP_SKB_CB ( skb ) -> end_seq - th -> fin , tp -> rcv_nxt ) ) ) { tcp_done ( sk ) ; NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_TCPABORTONDATA ) ; return 1 ; } tmo = tcp_fin_time ( sk ) ; if ( tmo > TCP_TIMEWAIT_LEN ) { inet_csk_reset_keepalive_timer ( sk , tmo - TCP_TIMEWAIT_LEN ) ; } else if ( th -> fin || sock_owned_by_user ( sk ) ) { inet_csk_reset_keepalive_timer ( sk , tmo ) ; } else { tcp_time_wait ( sk , TCP_FIN_WAIT2 , tmo ) ; goto discard ; } } } break ; case TCP_CLOSING : if ( tp -> snd_una == tp -> write_seq ) { tcp_time_wait ( sk , TCP_TIME_WAIT , 0 ) ; goto discard ; } break ; case TCP_LAST_ACK : if ( tp -> snd_una == tp -> write_seq ) { tcp_update_metrics ( sk ) ; tcp_done ( sk ) ; goto discard ; } break ; } } else goto discard ; tcp_urg ( sk , skb , th ) ; switch ( sk -> sk_state ) { case TCP_CLOSE_WAIT : case TCP_CLOSING : case TCP_LAST_ACK : if ( ! before ( TCP_SKB_CB ( skb ) -> seq , tp -> rcv_nxt ) ) break ; case TCP_FIN_WAIT1 : case TCP_FIN_WAIT2 : if ( sk -> sk_shutdown & RCV_SHUTDOWN ) { if ( TCP_SKB_CB ( skb ) -> end_seq != TCP_SKB_CB ( skb ) -> seq && after ( TCP_SKB_CB ( skb ) -> end_seq - th -> fin , tp -> rcv_nxt ) ) { NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_TCPABORTONDATA ) ; tcp_reset ( sk ) ; return 1 ; } } case TCP_ESTABLISHED : tcp_data_queue ( sk , skb ) ; queued = 1 ; break ; } if ( sk -> sk_state != TCP_CLOSE ) { tcp_data_snd_check ( sk ) ; tcp_ack_snd_check ( sk ) ; } if ( ! queued ) { discard : __kfree_skb ( skb ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( th -> fin ) goto discard ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7550\n\n```\nCWE-362 long keyctl_read_key ( key_serial_t keyid , char __user * buffer , size_t buflen ) { struct key * key ; key_ref_t key_ref ; long ret ; key_ref = lookup_user_key ( keyid , 0 , 0 ) ; if ( IS_ERR ( key_ref ) ) { ret = - ENOKEY ; goto error ; } key = key_ref_to_ptr ( key_ref ) ; ret = key_permission ( key_ref , KEY_NEED_READ ) ; if ( ret == 0 ) goto can_read_key ; if ( ret != - EACCES ) goto error ; if ( ! is_key_possessed ( key_ref ) ) { ret = - EACCES ; goto error2 ; } can_read_key : <S2SV_StartBug> ret = key_validate ( key ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ret == 0 ) { <S2SV_EndBug> ret = - EOPNOTSUPP ; <S2SV_StartBug> if ( key -> type -> read ) { <S2SV_EndBug> down_read ( & key -> sem ) ; <S2SV_StartBug> ret = key -> type -> read ( key , buffer , buflen ) ; <S2SV_EndBug> up_read ( & key -> sem ) ; } } error2 : key_put ( key ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : ret = - EOPNOTSUPP ; if ( key -> type -> read ) { down_read ( & key -> sem ) ; ret = <S2SV_ModStart> == 0 ) ret = <S2SV_ModEnd> key -> type <S2SV_ModStart> type -> read ( key , buffer , buflen ) ; up_read <S2SV_ModEnd> ( & key <S2SV_ModStart> sem ) ; <S2SV_ModEnd> } error2 :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0840\n\n```\nCWE-119 WORD32 ih264d_cavlc_4x4res_block_totalcoeff_11to16 ( UWORD32 u4_isdc , UWORD32 u4_total_coeff_trail_one , dec_bit_stream_t * ps_bitstrm ) { UWORD32 u4_total_zeroes ; WORD32 i ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 u4_bitstream_offset = ps_bitstrm -> u4_ofst ; UWORD32 u4_trailing_ones = u4_total_coeff_trail_one & 0xFFFF ; UWORD32 u4_total_coeff = u4_total_coeff_trail_one >> 16 ; <S2SV_StartBug> WORD16 i2_level_arr [ 16 ] ; <S2SV_EndBug> tu_sblk4x4_coeff_data_t * ps_tu_4x4 ; WORD16 * pi2_coeff_data ; dec_struct_t * ps_dec = ( dec_struct_t * ) ps_bitstrm -> pv_codec_handle ; ps_tu_4x4 = ( tu_sblk4x4_coeff_data_t * ) ps_dec -> pv_parse_tu_coeff_data ; ps_tu_4x4 -> u2_sig_coeff_map = 0 ; pi2_coeff_data = & ps_tu_4x4 -> ai2_level [ 0 ] ; i = u4_total_coeff - 1 ; if ( u4_trailing_ones ) { UWORD32 u4_signs , u4_cnt = u4_trailing_ones ; WORD16 ( * ppi2_trlone_lkup ) [ 3 ] = ( WORD16 ( * ) [ 3 ] ) gai2_ih264d_trailing_one_level ; WORD16 * pi2_trlone_lkup ; GETBITS ( u4_signs , u4_bitstream_offset , pu4_bitstrm_buf , u4_cnt ) ; pi2_trlone_lkup = ppi2_trlone_lkup [ ( 1 << u4_cnt ) - 2 + u4_signs ] ; while ( u4_cnt -- ) i2_level_arr [ i -- ] = * pi2_trlone_lkup ++ ; } if ( i >= 0 ) { UWORD32 u4_lev_suffix , u4_suffix_len , u4_lev_suffix_size ; UWORD16 u2_lev_code , u2_abs_value ; UWORD32 u4_lev_prefix ; if ( u4_trailing_ones < 3 ) { FIND_ONE_IN_STREAM_32 ( u4_lev_prefix , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_lev_suffix_size = ( 15 <= u4_lev_prefix ) ? ( u4_lev_prefix - 3 ) : 1 ; GETBITS ( u4_lev_suffix , u4_bitstream_offset , pu4_bitstrm_buf , u4_lev_suffix_size ) ; u2_lev_code = 2 + ( MIN ( u4_lev_prefix , 15 ) << 1 ) + u4_lev_suffix ; if ( 16 <= u4_lev_prefix ) { u2_lev_code += ( ( 1 << ( u4_lev_prefix - 3 ) ) - 4096 ) ; } } else { FIND_ONE_IN_STREAM_32 ( u4_lev_prefix , u4_bitstream_offset , pu4_bitstrm_buf ) ; u2_lev_code = MIN ( 15 , u4_lev_prefix ) ; u2_lev_code += ( 3 == u4_trailing_ones ) ? 0 : ( 2 ) ; if ( 14 == u4_lev_prefix ) u4_lev_suffix_size = 4 ; else if ( 15 <= u4_lev_prefix ) { u2_lev_code += 15 ; u4_lev_suffix_size = ( u4_lev_prefix - 3 ) ; } else u4_lev_suffix_size = 0 ; if ( 16 <= u4_lev_prefix ) { u2_lev_code += ( ( 1 << ( u4_lev_prefix - 3 ) ) - 4096 ) ; } if ( u4_lev_suffix_size ) { GETBITS ( u4_lev_suffix , u4_bitstream_offset , pu4_bitstrm_buf , u4_lev_suffix_size ) ; u2_lev_code += u4_lev_suffix ; } } u2_abs_value = ( u2_lev_code + 2 ) >> 1 ; i2_level_arr [ i -- ] = ( u2_lev_code & 1 ) ? - u2_abs_value : u2_abs_value ; u4_suffix_len = ( u2_abs_value > 3 ) ? 2 : 1 ; while ( i >= 0 ) { FIND_ONE_IN_STREAM_32 ( u4_lev_prefix , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_lev_suffix_size = ( 15 <= u4_lev_prefix ) ? ( u4_lev_prefix - 3 ) : u4_suffix_len ; GETBITS ( u4_lev_suffix , u4_bitstream_offset , pu4_bitstrm_buf , u4_lev_suffix_size ) ; u2_lev_code = ( MIN ( 15 , u4_lev_prefix ) << u4_suffix_len ) + u4_lev_suffix ; if ( 16 <= u4_lev_prefix ) { u2_lev_code += ( ( 1 << ( u4_lev_prefix - 3 ) ) - 4096 ) ; } u2_abs_value = ( u2_lev_code + 2 ) >> 1 ; i2_level_arr [ i -- ] = ( u2_lev_code & 1 ) ? - u2_abs_value : u2_abs_value ; u4_suffix_len += ( u4_suffix_len < 6 ) ? ( u2_abs_value > ( 3 << ( u4_suffix_len - 1 ) ) ) : 0 ; } } if ( u4_total_coeff < ( 16 - u4_isdc ) ) { UWORD32 u4_index ; const UWORD8 ( * ppu1_total_zero_lkup ) [ 16 ] = ( const UWORD8 ( * ) [ 16 ] ) gau1_ih264d_table_total_zero_11to15 ; NEXTBITS ( u4_index , u4_bitstream_offset , pu4_bitstrm_buf , 4 ) ; u4_total_zeroes = ppu1_total_zero_lkup [ u4_total_coeff - 11 ] [ u4_index ] ; FLUSHBITS ( u4_bitstream_offset , ( u4_total_zeroes >> 4 ) ) ; u4_total_zeroes &= 0xf ; } else u4_total_zeroes = 0 ; { const UWORD8 * pu1_table_runbefore ; UWORD32 u4_run ; WORD32 k ; UWORD32 u4_scan_pos = u4_total_coeff + u4_total_zeroes - 1 + u4_isdc ; WORD32 u4_zeroes_left = u4_total_zeroes ; k = u4_total_coeff - 1 ; pu1_table_runbefore = ( UWORD8 * ) gau1_ih264d_table_run_before ; while ( ( u4_zeroes_left > 0 ) && k ) { UWORD32 u4_code ; NEXTBITS ( u4_code , u4_bitstream_offset , pu4_bitstrm_buf , 3 ) ; u4_code = pu1_table_runbefore [ u4_code + ( u4_zeroes_left << 3 ) ] ; u4_run = u4_code >> 2 ; FLUSHBITS ( u4_bitstream_offset , ( u4_code & 0x03 ) ) ; SET_BIT ( ps_tu_4x4 -> u2_sig_coeff_map , u4_scan_pos ) ; * pi2_coeff_data ++ = i2_level_arr [ k -- ] ; u4_zeroes_left -= u4_run ; u4_scan_pos -= ( u4_run + 1 ) ; } if ( u4_zeroes_left < 0 ) return - 1 ; while ( k >= 0 ) { SET_BIT ( ps_tu_4x4 -> u2_sig_coeff_map , u4_scan_pos ) ; * pi2_coeff_data ++ = i2_level_arr [ k -- ] ; u4_scan_pos -- ; } } { WORD32 offset ; offset = ( UWORD8 * ) pi2_coeff_data - ( UWORD8 * ) ps_tu_4x4 ; offset = ALIGN4 ( offset ) ; ps_dec -> pv_parse_tu_coeff_data = ( void * ) ( ( UWORD8 * ) ps_dec -> pv_parse_tu_coeff_data + offset ) ; } ps_bitstrm -> u4_ofst = u4_bitstream_offset ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 16 ; WORD16 ai2_level_arr [ 19 ] ; WORD16 * i2_level_arr = & ai2_level_arr [ 3 <S2SV_ModEnd> ] ; tu_sblk4x4_coeff_data_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3231\n\n```\nCWE-200 static int llc_ui_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sockaddr_llc * uaddr = ( struct sockaddr_llc * ) msg -> msg_name ; const int nonblock = flags & MSG_DONTWAIT ; struct sk_buff * skb = NULL ; struct sock * sk = sock -> sk ; struct llc_sock * llc = llc_sk ( sk ) ; unsigned long cpu_flags ; size_t copied = 0 ; u32 peek_seq = 0 ; u32 * seq ; unsigned long used ; int target ; <S2SV_StartBug> long timeo ; <S2SV_EndBug> lock_sock ( sk ) ; copied = - ENOTCONN ; if ( unlikely ( sk -> sk_type == SOCK_STREAM && sk -> sk_state == TCP_LISTEN ) ) goto out ; timeo = sock_rcvtimeo ( sk , nonblock ) ; seq = & llc -> copied_seq ; if ( flags & MSG_PEEK ) { peek_seq = llc -> copied_seq ; seq = & peek_seq ; } target = sock_rcvlowat ( sk , flags & MSG_WAITALL , len ) ; copied = 0 ; do { u32 offset ; if ( signal_pending ( current ) ) { if ( copied ) break ; copied = timeo ? sock_intr_errno ( timeo ) : - EAGAIN ; break ; } skb = skb_peek ( & sk -> sk_receive_queue ) ; if ( skb ) { offset = * seq ; goto found_ok_skb ; } if ( copied >= target && ! sk -> sk_backlog . tail ) break ; if ( copied ) { if ( sk -> sk_err || sk -> sk_state == TCP_CLOSE || ( sk -> sk_shutdown & RCV_SHUTDOWN ) || ! timeo || ( flags & MSG_PEEK ) ) break ; } else { if ( sock_flag ( sk , SOCK_DONE ) ) break ; if ( sk -> sk_err ) { copied = sock_error ( sk ) ; break ; } if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; if ( sk -> sk_type == SOCK_STREAM && sk -> sk_state == TCP_CLOSE ) { if ( ! sock_flag ( sk , SOCK_DONE ) ) { copied = - ENOTCONN ; break ; } break ; } if ( ! timeo ) { copied = - EAGAIN ; break ; } } if ( copied >= target ) { release_sock ( sk ) ; lock_sock ( sk ) ; } else sk_wait_data ( sk , & timeo ) ; if ( ( flags & MSG_PEEK ) && peek_seq != llc -> copied_seq ) { net_dbg_ratelimited ( \"LLC(%s:%d):<S2SV_blank>Application<S2SV_blank>bug,<S2SV_blank>race<S2SV_blank>in<S2SV_blank>MSG_PEEK\\\\n\" , current -> comm , task_pid_nr ( current ) ) ; peek_seq = llc -> copied_seq ; } continue ; found_ok_skb : used = skb -> len - offset ; if ( len < used ) used = len ; if ( ! ( flags & MSG_TRUNC ) ) { int rc = skb_copy_datagram_iovec ( skb , offset , msg -> msg_iov , used ) ; if ( rc ) { if ( ! copied ) copied = - EFAULT ; break ; } } * seq += used ; copied += used ; len -= used ; if ( sk -> sk_type != SOCK_STREAM ) goto copy_uaddr ; if ( ! ( flags & MSG_PEEK ) ) { spin_lock_irqsave ( & sk -> sk_receive_queue . lock , cpu_flags ) ; sk_eat_skb ( sk , skb , false ) ; spin_unlock_irqrestore ( & sk -> sk_receive_queue . lock , cpu_flags ) ; * seq = 0 ; } if ( used + offset < skb -> len ) continue ; } while ( len > 0 ) ; out : release_sock ( sk ) ; return copied ; copy_uaddr : if ( uaddr != NULL && skb != NULL ) { memcpy ( uaddr , llc_ui_skb_cb ( skb ) , sizeof ( * uaddr ) ) ; msg -> msg_namelen = sizeof ( * uaddr ) ; } if ( llc_sk ( sk ) -> cmsg_flags ) llc_cmsg_rcv ( msg , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { spin_lock_irqsave ( & sk -> sk_receive_queue . lock , cpu_flags ) ; sk_eat_skb ( sk , skb , false ) ; spin_unlock_irqrestore ( & sk -> sk_receive_queue . lock , cpu_flags ) ; * seq = 0 ; } goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; long timeo ; msg -> msg_namelen = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0038\n\n```\nCWE-190 STATIC struct posix_acl * xfs_acl_from_disk ( struct xfs_acl * aclp ) { struct posix_acl_entry * acl_e ; struct posix_acl * acl ; struct xfs_acl_entry * ace ; <S2SV_StartBug> int count , i ; <S2SV_EndBug> count = be32_to_cpu ( aclp -> acl_cnt ) ; if ( count > XFS_ACL_MAX_ENTRIES ) return ERR_PTR ( - EFSCORRUPTED ) ; acl = posix_acl_alloc ( count , GFP_KERNEL ) ; if ( ! acl ) return ERR_PTR ( - ENOMEM ) ; for ( i = 0 ; i < count ; i ++ ) { acl_e = & acl -> a_entries [ i ] ; ace = & aclp -> acl_entry [ i ] ; acl_e -> e_tag = be32_to_cpu ( ace -> ae_tag ) ; acl_e -> e_perm = be16_to_cpu ( ace -> ae_perm ) ; switch ( acl_e -> e_tag ) { case ACL_USER : case ACL_GROUP : acl_e -> e_id = be32_to_cpu ( ace -> ae_id ) ; break ; case ACL_USER_OBJ : case ACL_GROUP_OBJ : case ACL_MASK : case ACL_OTHER : acl_e -> e_id = ACL_UNDEFINED_ID ; break ; default : goto fail ; } } return acl ; fail : posix_acl_release ( acl ) ; return ERR_PTR ( - EINVAL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ace ; unsigned\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_set_dbg_options ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctrl_id , va_list args ) { <S2SV_EndBug> <S2SV_StartBug> # if CONFIG_POSTPROC_VISUALIZER && CONFIG_POSTPROC <S2SV_EndBug> int data = va_arg ( args , int ) ; # define MAP ( id , var ) case id : var = data ; break ; switch ( ctrl_id ) { MAP ( VP8_SET_DBG_COLOR_REF_FRAME , ctx -> dbg_color_ref_frame_flag ) ; MAP ( VP8_SET_DBG_COLOR_MB_MODES , ctx -> dbg_color_mb_modes_flag ) ; MAP ( VP8_SET_DBG_COLOR_B_MODES , ctx -> dbg_color_b_modes_flag ) ; MAP ( VP8_SET_DBG_DISPLAY_MV , ctx -> dbg_display_mv_flag ) ; } return VPX_CODEC_OK ; # else return VPX_CODEC_INCAPABLE ; <S2SV_StartBug> # endif <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> args ) { ( void ) ctx ; ( void ) args ; <S2SV_ModEnd> return VPX_CODEC_INCAPABLE ; <S2SV_ModStart> return VPX_CODEC_INCAPABLE ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 struct pci_vdev * pci_get_vdev_info ( int slot ) { struct businfo * bi ; struct slotinfo * si ; struct pci_vdev * dev = NULL ; bi = pci_businfo [ 0 ] ; <S2SV_StartBug> assert ( bi != NULL ) ; <S2SV_EndBug> si = & bi -> slotinfo [ slot ] ; if ( si != NULL ) dev = si -> si_funcs [ 0 ] . fi_devi ; else fprintf ( stderr , \"slot=%d<S2SV_blank>is<S2SV_blank>empty!\\\\n\" , slot ) ; return dev ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ] ; if ( bi == NULL ) return NULL <S2SV_ModEnd> ; si =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2185\n\n```\nCWE-000 static int ati_remote2_probe ( struct usb_interface * interface , const struct usb_device_id * id ) { struct usb_device * udev = interface_to_usbdev ( interface ) ; struct usb_host_interface * alt = interface -> cur_altsetting ; struct ati_remote2 * ar2 ; int r ; if ( alt -> desc . bInterfaceNumber ) return - ENODEV ; ar2 = kzalloc ( sizeof ( struct ati_remote2 ) , GFP_KERNEL ) ; if ( ! ar2 ) return - ENOMEM ; ar2 -> udev = udev ; <S2SV_StartBug> ar2 -> intf [ 0 ] = interface ; <S2SV_EndBug> ar2 -> ep [ 0 ] = & alt -> endpoint [ 0 ] . desc ; ar2 -> intf [ 1 ] = usb_ifnum_to_if ( udev , 1 ) ; <S2SV_StartBug> r = usb_driver_claim_interface ( & ati_remote2_driver , ar2 -> intf [ 1 ] , ar2 ) ; <S2SV_EndBug> if ( r ) goto fail1 ; alt = ar2 -> intf [ 1 ] -> cur_altsetting ; <S2SV_StartBug> ar2 -> ep [ 1 ] = & alt -> endpoint [ 0 ] . desc ; <S2SV_EndBug> r = ati_remote2_urb_init ( ar2 ) ; if ( r ) <S2SV_StartBug> goto fail2 ; <S2SV_EndBug> ar2 -> channel_mask = channel_mask ; ar2 -> mode_mask = mode_mask ; r = ati_remote2_setup ( ar2 , ar2 -> channel_mask ) ; if ( r ) <S2SV_StartBug> goto fail2 ; <S2SV_EndBug> usb_make_path ( udev , ar2 -> phys , sizeof ( ar2 -> phys ) ) ; strlcat ( ar2 -> phys , \"/input0\" , sizeof ( ar2 -> phys ) ) ; strlcat ( ar2 -> name , \"ATI<S2SV_blank>Remote<S2SV_blank>Wonder<S2SV_blank>II\" , sizeof ( ar2 -> name ) ) ; r = sysfs_create_group ( & udev -> dev . kobj , & ati_remote2_attr_group ) ; if ( r ) <S2SV_StartBug> goto fail2 ; <S2SV_EndBug> r = ati_remote2_input_init ( ar2 ) ; if ( r ) <S2SV_StartBug> goto fail3 ; <S2SV_EndBug> usb_set_intfdata ( interface , ar2 ) ; interface -> needs_remote_wakeup = 1 ; return 0 ; <S2SV_StartBug> fail3 : <S2SV_EndBug> sysfs_remove_group ( & udev -> dev . kobj , & ati_remote2_attr_group ) ; fail2 : <S2SV_StartBug> ati_remote2_urb_cleanup ( ar2 ) ; <S2SV_EndBug> usb_driver_release_interface ( & ati_remote2_driver , ar2 -> intf [ 1 ] ) ; fail1 : kfree ( ar2 ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = udev ; if ( alt -> desc . bNumEndpoints < 1 || ! alt -> endpoint ) { dev_err ( & interface -> dev , \"%s():<S2SV_blank>interface<S2SV_blank>0<S2SV_blank>must<S2SV_blank>have<S2SV_blank>an<S2SV_blank>endpoint\\\\n\" , __func__ ) ; r = - ENODEV ; goto fail1 ; } <S2SV_ModStart> 1 ) ; if ( ( udev -> actconfig -> desc . bNumInterfaces < 2 ) || ! ar2 -> intf [ 1 ] ) { dev_err ( & interface -> dev , \"%s():<S2SV_blank>need<S2SV_blank>2<S2SV_blank>interfaces,<S2SV_blank>found<S2SV_blank>%d\\\\n\" , __func__ , udev -> actconfig -> desc . bNumInterfaces ) ; r = - ENODEV ; goto fail1 ; } <S2SV_ModStart> -> cur_altsetting ; if ( alt -> desc . bNumEndpoints < 1 || ! alt -> endpoint ) { dev_err ( & interface -> dev , \"%s():<S2SV_blank>interface<S2SV_blank>1<S2SV_blank>must<S2SV_blank>have<S2SV_blank>an<S2SV_blank>endpoint\\\\n\" , __func__ ) ; r = - ENODEV ; goto fail2 ; } <S2SV_ModStart> r ) goto fail3 <S2SV_ModEnd> ; ar2 -> <S2SV_ModStart> r ) goto fail3 <S2SV_ModEnd> ; usb_make_path ( <S2SV_ModStart> r ) goto fail3 <S2SV_ModEnd> ; r = <S2SV_ModStart> r ) goto fail4 <S2SV_ModEnd> ; usb_set_intfdata ( <S2SV_ModStart> return 0 ; fail4 : sysfs_remove_group ( & udev -> dev . kobj , & ati_remote2_attr_group ) ; fail3 : ati_remote2_urb_cleanup ( ar2 <S2SV_ModEnd> ) ; fail2 <S2SV_ModStart> ; fail2 : <S2SV_ModEnd> usb_driver_release_interface ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * create_principal3_2_svc ( cprinc3_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , service_name ; <S2SV_EndBug> OM_uint32 minor_stat ; kadm5_server_handle_t handle ; restriction_t * rp ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> rec . principal , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_ADD , arg -> rec . principal , & rp ) || kadm5int_acl_impose_restrictions ( handle -> context , & arg -> rec , & arg -> mask , rp ) ) { ret . code = KADM5_AUTH_ADD ; log_unauth ( \"kadm5_create_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_create_principal_3 ( ( void * ) handle , & arg -> rec , arg -> mask , arg -> n_ks_tuple , arg -> ks_tuple , arg -> passwd ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_create_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4482\n\n```\nCWE-200 static int proc_connectinfo ( struct usb_dev_state * ps , void __user * arg ) { <S2SV_StartBug> struct usbdevfs_connectinfo ci = { <S2SV_EndBug> <S2SV_StartBug> . devnum = ps -> dev -> devnum , <S2SV_EndBug> . slow = ps -> dev -> speed == USB_SPEED_LOW <S2SV_StartBug> } ; <S2SV_EndBug> if ( copy_to_user ( arg , & ci , sizeof ( ci ) ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct usbdevfs_connectinfo ci ; memset ( & ci , 0 , sizeof ( ci ) ) ; ci <S2SV_ModEnd> . devnum = <S2SV_ModStart> dev -> devnum ; ci <S2SV_ModEnd> . slow = <S2SV_ModStart> speed == USB_SPEED_LOW <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5302\n\n```\nCWE-200 static void on_page_prepare ( GtkNotebook * assistant , GtkWidget * page , gpointer user_data ) { if ( ! is_processing_finished ( ) ) { show_next_step_button ( ) ; clear_warnings ( ) ; } gtk_widget_hide ( g_btn_detail ) ; gtk_widget_hide ( g_btn_onfail ) ; if ( ! g_expert_mode ) gtk_widget_hide ( g_btn_repeat ) ; save_items_from_notepad ( ) ; <S2SV_StartBug> save_text_from_text_view ( g_tv_comment , FILENAME_COMMENT ) ; <S2SV_EndBug> if ( pages [ PAGENO_SUMMARY ] . page_widget == page ) { if ( ! g_expert_mode ) { int n = select_next_page_no ( pages [ PAGENO_SUMMARY ] . page_no , NULL ) ; log_info ( \"switching<S2SV_blank>to<S2SV_blank>page_no:%d\" , n ) ; gtk_notebook_set_current_page ( assistant , n ) ; return ; } } if ( pages [ PAGENO_EDIT_ELEMENTS ] . page_widget == page ) { if ( highlight_forbidden ( ) ) { add_sensitive_data_warning ( ) ; show_warnings ( ) ; gtk_expander_set_expanded ( g_exp_search , TRUE ) ; } else gtk_toggle_button_set_active ( GTK_TOGGLE_BUTTON ( g_rb_custom_search ) , TRUE ) ; show_warnings ( ) ; } if ( pages [ PAGENO_REVIEW_DATA ] . page_widget == page ) { update_ls_details_checkboxes ( g_event_selected ) ; gtk_widget_set_sensitive ( g_btn_next , gtk_toggle_button_get_active ( g_tb_approve_bt ) ) ; } if ( pages [ PAGENO_EDIT_COMMENT ] . page_widget == page ) { gtk_widget_show ( g_btn_detail ) ; gtk_widget_set_sensitive ( g_btn_next , false ) ; on_comment_changed ( gtk_text_view_get_buffer ( g_tv_comment ) , NULL ) ; } if ( pages [ PAGENO_EVENT_PROGRESS ] . page_widget == page ) { log_info ( \"g_event_selected:\\'%s\\'\" , g_event_selected ) ; if ( g_event_selected && g_event_selected [ 0 ] ) { clear_warnings ( ) ; start_event_run ( g_event_selected ) ; } } if ( pages [ PAGENO_EVENT_SELECTOR ] . page_widget == page ) { if ( ! g_expert_mode && ! g_auto_event_list ) hide_next_step_button ( ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> g_tv_comment , FILENAME_COMMENT ) ; problem_data_reload_from_dump_dir ( ) ; update_gui_state_from_problem_data ( 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11455\n\n```\nCWE-125 char * Util_urlDecode ( char * url ) { if ( url && * url ) { register int x , y ; for ( x = 0 , y = 0 ; url [ y ] ; x ++ , y ++ ) { <S2SV_StartBug> if ( ( url [ x ] = url [ y ] ) == '+' ) <S2SV_EndBug> url [ x ] = '<S2SV_blank>' ; <S2SV_StartBug> else if ( url [ x ] == '%' ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! ( url [ x + 1 ] && url [ x + 2 ] ) ) <S2SV_EndBug> break ; <S2SV_StartBug> url [ x ] = x2c ( url + y + 1 ) ; <S2SV_EndBug> <S2SV_StartBug> y += 2 ; <S2SV_EndBug> } } url [ x ] = 0 ; } return url ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( <S2SV_ModEnd> url [ y <S2SV_ModStart> [ y ] <S2SV_ModEnd> == '+' ) <S2SV_ModStart> == '+' ) { <S2SV_ModStart> = '<S2SV_blank>' ; } <S2SV_ModStart> ( url [ y <S2SV_ModEnd> ] == '%' <S2SV_ModStart> if ( ! url [ y <S2SV_ModEnd> + 1 ] <S2SV_ModStart> + 1 ] || ! url [ y <S2SV_ModEnd> + 2 ] <S2SV_ModStart> + 2 ] <S2SV_ModEnd> ) break ; <S2SV_ModStart> x ] = _x2c <S2SV_ModEnd> ( url + <S2SV_ModStart> y += 2 ; } else { url [ x ] = url [ y ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17439\n\n```\nCWE-476 krb5_error_code _kdc_as_rep ( kdc_request_t r , krb5_data * reply , const char * from , struct sockaddr * from_addr , int datagram_reply ) { krb5_context context = r -> context ; krb5_kdc_configuration * config = r -> config ; KDC_REQ * req = & r -> req ; KDC_REQ_BODY * b = NULL ; AS_REP rep ; KDCOptions f ; krb5_enctype setype ; krb5_error_code ret = 0 ; Key * skey ; int found_pa = 0 ; int i , flags = HDB_F_FOR_AS_REQ ; METHOD_DATA error_method ; const PA_DATA * pa ; memset ( & rep , 0 , sizeof ( rep ) ) ; error_method . len = 0 ; error_method . val = NULL ; ret = _kdc_fast_unwrap_request ( r ) ; if ( ret ) { _kdc_r_log ( r , 0 , \"FAST<S2SV_blank>unwrap<S2SV_blank>request<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>failed:<S2SV_blank>%d\" , from , ret ) ; goto out ; } b = & req -> req_body ; f = b -> kdc_options ; if ( f . canonicalize ) flags |= HDB_F_CANON ; if ( b -> sname == NULL ) { ret = KRB5KRB_ERR_GENERIC ; _kdc_set_e_text ( r , \"No<S2SV_blank>server<S2SV_blank>in<S2SV_blank>request\" ) ; } else { ret = _krb5_principalname2krb5_principal ( context , & r -> server_princ , * ( b -> sname ) , b -> realm ) ; if ( ret == 0 ) ret = krb5_unparse_name ( context , r -> server_princ , & r -> server_name ) ; } if ( ret ) { kdc_log ( context , config , 0 , \"AS-REQ<S2SV_blank>malformed<S2SV_blank>server<S2SV_blank>name<S2SV_blank>from<S2SV_blank>%s\" , from ) ; goto out ; } if ( b -> cname == NULL ) { ret = KRB5KRB_ERR_GENERIC ; _kdc_set_e_text ( r , \"No<S2SV_blank>client<S2SV_blank>in<S2SV_blank>request\" ) ; } else { ret = _krb5_principalname2krb5_principal ( context , & r -> client_princ , * ( b -> cname ) , b -> realm ) ; if ( ret ) goto out ; ret = krb5_unparse_name ( context , r -> client_princ , & r -> client_name ) ; } if ( ret ) { kdc_log ( context , config , 0 , \"AS-REQ<S2SV_blank>malformed<S2SV_blank>client<S2SV_blank>name<S2SV_blank>from<S2SV_blank>%s\" , from ) ; goto out ; } kdc_log ( context , config , 0 , \"AS-REQ<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>%s\" , r -> client_name , from , r -> server_name ) ; if ( _kdc_is_anonymous ( context , r -> client_princ ) ) { if ( ! _kdc_is_anon_request ( b ) ) { kdc_log ( context , config , 0 , \"Anonymous<S2SV_blank>ticket<S2SV_blank>w/o<S2SV_blank>anonymous<S2SV_blank>flag\" ) ; ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; goto out ; } } else if ( _kdc_is_anon_request ( b ) ) { kdc_log ( context , config , 0 , \"Request<S2SV_blank>for<S2SV_blank>a<S2SV_blank>anonymous<S2SV_blank>ticket<S2SV_blank>with<S2SV_blank>non<S2SV_blank>\" \"anonymous<S2SV_blank>client<S2SV_blank>name:<S2SV_blank>%s\" , r -> client_name ) ; ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; goto out ; } ret = _kdc_db_fetch ( context , config , r -> client_princ , HDB_F_GET_CLIENT | flags , NULL , & r -> clientdb , & r -> client ) ; if ( ret == HDB_ERR_NOT_FOUND_HERE ) { kdc_log ( context , config , 5 , \"client<S2SV_blank>%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>secrets<S2SV_blank>at<S2SV_blank>this<S2SV_blank>KDC,<S2SV_blank>need<S2SV_blank>to<S2SV_blank>proxy\" , r -> client_name ) ; goto out ; } else if ( ret == HDB_ERR_WRONG_REALM ) { char * fixed_client_name = NULL ; ret = krb5_unparse_name ( context , r -> client -> entry . principal , & fixed_client_name ) ; if ( ret ) { goto out ; } kdc_log ( context , config , 0 , \"WRONG_REALM<S2SV_blank>-<S2SV_blank>%s<S2SV_blank>-><S2SV_blank>%s\" , r -> client_name , fixed_client_name ) ; free ( fixed_client_name ) ; ret = _kdc_fast_mk_error ( context , r , & error_method , r -> armor_crypto , & req -> req_body , KRB5_KDC_ERR_WRONG_REALM , NULL , r -> server_princ , NULL , & r -> client -> entry . principal -> realm , NULL , NULL , reply ) ; goto out ; } else if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"UNKNOWN<S2SV_blank>--<S2SV_blank>%s:<S2SV_blank>%s\" , r -> client_name , msg ) ; krb5_free_error_message ( context , msg ) ; ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; goto out ; } ret = _kdc_db_fetch ( context , config , r -> server_princ , HDB_F_GET_SERVER | HDB_F_GET_KRBTGT | flags , NULL , NULL , & r -> server ) ; if ( ret == HDB_ERR_NOT_FOUND_HERE ) { kdc_log ( context , config , 5 , \"target<S2SV_blank>%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>secrets<S2SV_blank>at<S2SV_blank>this<S2SV_blank>KDC,<S2SV_blank>need<S2SV_blank>to<S2SV_blank>proxy\" , r -> server_name ) ; goto out ; } else if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"UNKNOWN<S2SV_blank>--<S2SV_blank>%s:<S2SV_blank>%s\" , r -> server_name , msg ) ; krb5_free_error_message ( context , msg ) ; ret = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; goto out ; } ret = _kdc_find_etype ( context , krb5_principal_is_krbtgt ( context , r -> server_princ ) ? config -> tgt_use_strongest_session_key : config -> svc_use_strongest_session_key , FALSE , r -> client , b -> etype . val , b -> etype . len , & r -> sessionetype , NULL ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Client<S2SV_blank>(%s)<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>no<S2SV_blank>common<S2SV_blank>enctypes<S2SV_blank>with<S2SV_blank>KDC<S2SV_blank>\" \"to<S2SV_blank>use<S2SV_blank>for<S2SV_blank>the<S2SV_blank>session<S2SV_blank>key\" , r -> client_name , from ) ; goto out ; } if ( req -> padata ) { unsigned int n ; log_patypes ( context , config , req -> padata ) ; for ( n = 0 ; ! found_pa && n < sizeof ( pat ) / sizeof ( pat [ 0 ] ) ; n ++ ) { if ( pat [ n ] . validate == NULL ) continue ; if ( r -> armor_crypto == NULL && ( pat [ n ] . flags & PA_REQ_FAST ) ) continue ; kdc_log ( context , config , 5 , \"Looking<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>pa-data<S2SV_blank>--<S2SV_blank>%s\" , pat [ n ] . name , r -> client_name ) ; i = 0 ; pa = _kdc_find_padata ( req , & i , pat [ n ] . type ) ; if ( pa ) { ret = pat [ n ] . validate ( r , pa ) ; if ( ret != 0 ) { goto out ; } kdc_log ( context , config , 0 , \"%s<S2SV_blank>pre-authentication<S2SV_blank>succeeded<S2SV_blank>--<S2SV_blank>%s\" , pat [ n ] . name , r -> client_name ) ; found_pa = 1 ; r -> et . flags . pre_authent = 1 ; } } } if ( found_pa == 0 ) { Key * ckey = NULL ; size_t n ; for ( n = 0 ; n < sizeof ( pat ) / sizeof ( pat [ 0 ] ) ; n ++ ) { if ( ( pat [ n ] . flags & PA_ANNOUNCE ) == 0 ) continue ; ret = krb5_padata_add ( context , & error_method , pat [ n ] . type , NULL , 0 ) ; if ( ret ) goto out ; } ret = _kdc_find_etype ( context , config -> preauth_use_strongest_session_key , TRUE , r -> client , b -> etype . val , b -> etype . len , NULL , & ckey ) ; if ( ret == 0 ) { if ( older_enctype ( ckey -> key . keytype ) ) { ret = get_pa_etype_info ( context , config , & error_method , ckey ) ; if ( ret ) goto out ; } ret = get_pa_etype_info2 ( context , config , & error_method , ckey ) ; if ( ret ) goto out ; } if ( require_preauth_p ( r ) || _kdc_is_anon_request ( b ) ) { ret = KRB5KDC_ERR_PREAUTH_REQUIRED ; _kdc_set_e_text ( r , \"Need<S2SV_blank>to<S2SV_blank>use<S2SV_blank>PA-ENC-TIMESTAMP/PA-PK-AS-REQ\" ) ; goto out ; } if ( ckey == NULL ) { ret = KRB5KDC_ERR_CLIENT_NOTYET ; _kdc_set_e_text ( r , \"Doesn\\'t<S2SV_blank>have<S2SV_blank>a<S2SV_blank>client<S2SV_blank>key<S2SV_blank>available\" ) ; goto out ; } krb5_free_keyblock_contents ( r -> context , & r -> reply_key ) ; ret = krb5_copy_keyblock_contents ( r -> context , & ckey -> key , & r -> reply_key ) ; if ( ret ) goto out ; } if ( r -> clientdb -> hdb_auth_status ) { r -> clientdb -> hdb_auth_status ( context , r -> clientdb , r -> client , HDB_AUTH_SUCCESS ) ; } ret = _kdc_check_access ( context , config , r -> client , r -> client_name , r -> server , r -> server_name , req , & error_method ) ; if ( ret ) goto out ; ret = _kdc_get_preferred_key ( context , config , r -> server , r -> server_name , & setype , & skey ) ; if ( ret ) goto out ; if ( f . renew || f . validate || f . proxy || f . forwarded || f . enc_tkt_in_skey || ( _kdc_is_anon_request ( b ) && ! config -> allow_anonymous ) ) { ret = KRB5KDC_ERR_BADOPTION ; _kdc_set_e_text ( r , \"Bad<S2SV_blank>KDC<S2SV_blank>options\" ) ; goto out ; } rep . pvno = 5 ; rep . msg_type = krb_as_rep ; if ( _kdc_is_anonymous ( context , r -> client_princ ) ) { Realm anon_realm = KRB5_ANON_REALM ; ret = copy_Realm ( & anon_realm , & rep . crealm ) ; } else ret = copy_Realm ( & r -> client -> entry . principal -> realm , & rep . crealm ) ; if ( ret ) goto out ; ret = _krb5_principal2principalname ( & rep . cname , r -> client -> entry . principal ) ; if ( ret ) goto out ; rep . ticket . tkt_vno = 5 ; ret = copy_Realm ( & r -> server -> entry . principal -> realm , & rep . ticket . realm ) ; if ( ret ) goto out ; _krb5_principal2principalname ( & rep . ticket . sname , r -> server -> entry . principal ) ; # define CNT ( sp , t ) ( ( ( sp ) -> sname -> name_type ) == KRB5_NT_ ## t ) if ( CNT ( b , UNKNOWN ) || CNT ( b , PRINCIPAL ) || CNT ( b , SRV_INST ) || CNT ( b , SRV_HST ) || CNT ( b , SRV_XHST ) ) rep . ticket . sname . name_type = b -> sname -> name_type ; # undef CNT r -> et . flags . initial = 1 ; if ( r -> client -> entry . flags . forwardable && r -> server -> entry . flags . forwardable ) r -> et . flags . forwardable = f . forwardable ; else if ( f . forwardable ) { _kdc_set_e_text ( r , \"Ticket<S2SV_blank>may<S2SV_blank>not<S2SV_blank>be<S2SV_blank>forwardable\" ) ; ret = KRB5KDC_ERR_POLICY ; goto out ; } if ( r -> client -> entry . flags . proxiable && r -> server -> entry . flags . proxiable ) r -> et . flags . proxiable = f . proxiable ; else if ( f . proxiable ) { _kdc_set_e_text ( r , \"Ticket<S2SV_blank>may<S2SV_blank>not<S2SV_blank>be<S2SV_blank>proxiable\" ) ; ret = KRB5KDC_ERR_POLICY ; goto out ; } if ( r -> client -> entry . flags . postdate && r -> server -> entry . flags . postdate ) r -> et . flags . may_postdate = f . allow_postdate ; else if ( f . allow_postdate ) { _kdc_set_e_text ( r , \"Ticket<S2SV_blank>may<S2SV_blank>not<S2SV_blank>be<S2SV_blank>postdate\" ) ; ret = KRB5KDC_ERR_POLICY ; goto out ; } if ( ! _kdc_check_addresses ( context , config , b -> addresses , from_addr ) ) { _kdc_set_e_text ( r , \"Bad<S2SV_blank>address<S2SV_blank>list<S2SV_blank>in<S2SV_blank>requested\" ) ; ret = KRB5KRB_AP_ERR_BADADDR ; goto out ; } ret = copy_PrincipalName ( & rep . cname , & r -> et . cname ) ; if ( ret ) goto out ; ret = copy_Realm ( & rep . crealm , & r -> et . crealm ) ; if ( ret ) goto out ; { time_t start ; time_t t ; start = r -> et . authtime = kdc_time ; if ( f . postdated && req -> req_body . from ) { ALLOC ( r -> et . starttime ) ; start = * r -> et . starttime = * req -> req_body . from ; r -> et . flags . invalid = 1 ; r -> et . flags . postdated = 1 ; } _kdc_fix_time ( & b -> till ) ; t = * b -> till ; if ( r -> client -> entry . max_life ) t = start + min ( t - start , * r -> client -> entry . max_life ) ; if ( r -> server -> entry . max_life ) t = start + min ( t - start , * r -> server -> entry . max_life ) ; # if 0 t = min ( t , start + realm -> max_life ) ; # endif r -> et . endtime = t ; if ( f . renewable_ok && r -> et . endtime < * b -> till ) { f . renewable = 1 ; if ( b -> rtime == NULL ) { ALLOC ( b -> rtime ) ; * b -> rtime = 0 ; } if ( * b -> rtime < * b -> till ) * b -> rtime = * b -> till ; } if ( f . renewable && b -> rtime ) { t = * b -> rtime ; if ( t == 0 ) t = MAX_TIME ; if ( r -> client -> entry . max_renew ) t = start + min ( t - start , * r -> client -> entry . max_renew ) ; if ( r -> server -> entry . max_renew ) t = start + min ( t - start , * r -> server -> entry . max_renew ) ; # if 0 t = min ( t , start + realm -> max_renew ) ; # endif ALLOC ( r -> et . renew_till ) ; * r -> et . renew_till = t ; r -> et . flags . renewable = 1 ; } } if ( _kdc_is_anon_request ( b ) ) r -> et . flags . anonymous = 1 ; if ( b -> addresses ) { ALLOC ( r -> et . caddr ) ; copy_HostAddresses ( b -> addresses , r -> et . caddr ) ; } r -> et . transited . tr_type = DOMAIN_X500_COMPRESS ; krb5_data_zero ( & r -> et . transited . contents ) ; r -> ek . last_req . val = malloc ( 2 * sizeof ( * r -> ek . last_req . val ) ) ; if ( r -> ek . last_req . val == NULL ) { ret = ENOMEM ; goto out ; } r -> ek . last_req . len = 0 ; if ( r -> client -> entry . pw_end && ( config -> kdc_warn_pwexpire == 0 || kdc_time + config -> kdc_warn_pwexpire >= * r -> client -> entry . pw_end ) ) { r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_type = LR_PW_EXPTIME ; r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_value = * r -> client -> entry . pw_end ; ++ r -> ek . last_req . len ; } if ( r -> client -> entry . valid_end ) { r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_type = LR_ACCT_EXPTIME ; r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_value = * r -> client -> entry . valid_end ; ++ r -> ek . last_req . len ; } if ( r -> ek . last_req . len == 0 ) { r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_type = LR_NONE ; r -> ek . last_req . val [ r -> ek . last_req . len ] . lr_value = 0 ; ++ r -> ek . last_req . len ; } r -> ek . nonce = b -> nonce ; if ( r -> client -> entry . valid_end || r -> client -> entry . pw_end ) { ALLOC ( r -> ek . key_expiration ) ; if ( r -> client -> entry . valid_end ) { if ( r -> client -> entry . pw_end ) * r -> ek . key_expiration = min ( * r -> client -> entry . valid_end , * r -> client -> entry . pw_end ) ; else * r -> ek . key_expiration = * r -> client -> entry . valid_end ; } else * r -> ek . key_expiration = * r -> client -> entry . pw_end ; } else r -> ek . key_expiration = NULL ; r -> ek . flags = r -> et . flags ; r -> ek . authtime = r -> et . authtime ; if ( r -> et . starttime ) { ALLOC ( r -> ek . starttime ) ; * r -> ek . starttime = * r -> et . starttime ; } r -> ek . endtime = r -> et . endtime ; if ( r -> et . renew_till ) { ALLOC ( r -> ek . renew_till ) ; * r -> ek . renew_till = * r -> et . renew_till ; } ret = copy_Realm ( & rep . ticket . realm , & r -> ek . srealm ) ; if ( ret ) goto out ; ret = copy_PrincipalName ( & rep . ticket . sname , & r -> ek . sname ) ; if ( ret ) goto out ; if ( r -> et . caddr ) { ALLOC ( r -> ek . caddr ) ; copy_HostAddresses ( r -> et . caddr , r -> ek . caddr ) ; } if ( r -> session_key . keytype == ETYPE_NULL ) { ret = krb5_generate_random_keyblock ( context , r -> sessionetype , & r -> session_key ) ; if ( ret ) goto out ; } if ( r -> reply_key . keytype == ETYPE_NULL ) { _kdc_set_e_text ( r , \"Client<S2SV_blank>have<S2SV_blank>no<S2SV_blank>reply<S2SV_blank>key\" ) ; ret = KRB5KDC_ERR_CLIENT_NOTYET ; goto out ; } ret = copy_EncryptionKey ( & r -> session_key , & r -> et . key ) ; if ( ret ) goto out ; ret = copy_EncryptionKey ( & r -> session_key , & r -> ek . key ) ; if ( ret ) goto out ; if ( r -> outpadata . len ) { ALLOC ( rep . padata ) ; if ( rep . padata == NULL ) { ret = ENOMEM ; goto out ; } ret = copy_METHOD_DATA ( & r -> outpadata , rep . padata ) ; if ( ret ) goto out ; } if ( send_pac_p ( context , req ) ) { generate_pac ( r , skey ) ; } _kdc_log_timestamp ( context , config , \"AS-REQ\" , r -> et . authtime , r -> et . starttime , r -> et . endtime , r -> et . renew_till ) ; ret = _kdc_add_KRB5SignedPath ( context , config , r -> server , setype , r -> client -> entry . principal , NULL , NULL , & r -> et ) ; if ( ret ) goto out ; log_as_req ( context , config , r -> reply_key . keytype , setype , b ) ; r -> et . flags . enc_pa_rep = r -> ek . flags . enc_pa_rep = 1 ; i = 0 ; pa = _kdc_find_padata ( req , & i , KRB5_PADATA_REQ_ENC_PA_REP ) ; if ( pa ) { ret = add_enc_pa_rep ( r ) ; if ( ret ) { const char * msg = krb5_get_error_message ( r -> context , ret ) ; _kdc_r_log ( r , 0 , \"add_enc_pa_rep<S2SV_blank>failed:<S2SV_blank>%s:<S2SV_blank>%d\" , msg , ret ) ; krb5_free_error_message ( r -> context , msg ) ; goto out ; } } ret = _kdc_encode_reply ( context , config , r -> armor_crypto , req -> req_body . nonce , & rep , & r -> et , & r -> ek , setype , r -> server -> entry . kvno , & skey -> key , r -> client -> entry . kvno , & r -> reply_key , 0 , & r -> e_text , reply ) ; if ( ret ) goto out ; if ( datagram_reply && reply -> length > config -> max_datagram_reply_length ) { krb5_data_free ( reply ) ; ret = KRB5KRB_ERR_RESPONSE_TOO_BIG ; _kdc_set_e_text ( r , \"Reply<S2SV_blank>packet<S2SV_blank>too<S2SV_blank>large\" ) ; } out : free_AS_REP ( & rep ) ; if ( ret != 0 && ret != HDB_ERR_NOT_FOUND_HERE && reply -> length == 0 ) { ret = _kdc_fast_mk_error ( context , r , & error_method , r -> armor_crypto , & req -> req_body , ret , r -> e_text , r -> server_princ , <S2SV_StartBug> & r -> client_princ -> name , <S2SV_EndBug> <S2SV_StartBug> & r -> client_princ -> realm , <S2SV_EndBug> NULL , NULL , reply ) ; if ( ret ) goto out2 ; } out2 : free_EncTicketPart ( & r -> et ) ; free_EncKDCRepPart ( & r -> ek ) ; free_KDCFastState ( & r -> fast ) ; if ( error_method . len ) free_METHOD_DATA ( & error_method ) ; if ( r -> outpadata . len ) free_METHOD_DATA ( & r -> outpadata ) ; if ( r -> client_princ ) { krb5_free_principal ( context , r -> client_princ ) ; r -> client_princ = NULL ; } if ( r -> client_name ) { free ( r -> client_name ) ; r -> client_name = NULL ; } if ( r -> server_princ ) { krb5_free_principal ( context , r -> server_princ ) ; r -> server_princ = NULL ; } if ( r -> server_name ) { free ( r -> server_name ) ; r -> server_name = NULL ; } if ( r -> client ) _kdc_free_ent ( context , r -> client ) ; if ( r -> server ) _kdc_free_ent ( context , r -> server ) ; if ( r -> armor_crypto ) { krb5_crypto_destroy ( r -> context , r -> armor_crypto ) ; r -> armor_crypto = NULL ; } krb5_free_keyblock_contents ( r -> context , & r -> reply_key ) ; krb5_free_keyblock_contents ( r -> context , & r -> session_key ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> server_princ , <S2SV_ModEnd> r -> client_princ <S2SV_ModStart> r -> client_princ ? & r -> client_princ -> name : NULL , <S2SV_ModEnd> r -> client_princ <S2SV_ModStart> r -> client_princ ? & r -> client_princ -> realm : NULL <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16527\n\n```\nCWE-416 void snd_usb_mixer_disconnect ( struct usb_mixer_interface * mixer ) { <S2SV_StartBug> usb_kill_urb ( mixer -> urb ) ; <S2SV_EndBug> usb_kill_urb ( mixer -> rc_urb ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mixer ) { if ( mixer -> disconnected ) return ; if ( mixer -> urb ) <S2SV_ModStart> urb ) ; if ( mixer -> rc_urb ) <S2SV_ModStart> rc_urb ) ; mixer -> disconnected = true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jas_image_t * bmp_decode ( jas_stream_t * in , char * optstr ) { jas_image_t * image ; bmp_hdr_t hdr ; bmp_info_t * info ; uint_fast16_t cmptno ; jas_image_cmptparm_t cmptparms [ 3 ] ; jas_image_cmptparm_t * cmptparm ; uint_fast16_t numcmpts ; long n ; <S2SV_StartBug> image = 0 ; <S2SV_EndBug> info = 0 ; if ( optstr ) { jas_eprintf ( \"warning:<S2SV_blank>ignoring<S2SV_blank>BMP<S2SV_blank>decoder<S2SV_blank>options\\\\n\" ) ; } jas_eprintf ( \"THE<S2SV_blank>BMP<S2SV_blank>FORMAT<S2SV_blank>IS<S2SV_blank>NOT<S2SV_blank>FULLY<S2SV_blank>SUPPORTED!\\\\n\" \"THAT<S2SV_blank>IS,<S2SV_blank>THE<S2SV_blank>JASPER<S2SV_blank>SOFTWARE<S2SV_blank>CANNOT<S2SV_blank>DECODE<S2SV_blank>ALL<S2SV_blank>TYPES<S2SV_blank>OF<S2SV_blank>BMP<S2SV_blank>DATA.\\\\n\" \"IF<S2SV_blank>YOU<S2SV_blank>HAVE<S2SV_blank>ANY<S2SV_blank>PROBLEMS,<S2SV_blank>PLEASE<S2SV_blank>TRY<S2SV_blank>CONVERTING<S2SV_blank>YOUR<S2SV_blank>IMAGE<S2SV_blank>DATA\\\\n\" \"TO<S2SV_blank>THE<S2SV_blank>PNM<S2SV_blank>FORMAT,<S2SV_blank>AND<S2SV_blank>USING<S2SV_blank>THIS<S2SV_blank>FORMAT<S2SV_blank>INSTEAD.\\\\n\" ) ; if ( bmp_gethdr ( in , & hdr ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>header\\\\n\" ) ; goto error ; } JAS_DBGLOG ( 1 , ( \"BMP<S2SV_blank>header:<S2SV_blank>magic<S2SV_blank>0x%x;<S2SV_blank>siz<S2SV_blank>%d;<S2SV_blank>res1<S2SV_blank>%d;<S2SV_blank>res2<S2SV_blank>%d;<S2SV_blank>off<S2SV_blank>%d\\\\n\" , hdr . magic , hdr . siz , hdr . reserved1 , hdr . reserved2 , hdr . off ) ) ; if ( ! ( info = bmp_getinfo ( in ) ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>info\\\\n\" ) ; goto error ; } JAS_DBGLOG ( 1 , ( \"BMP<S2SV_blank>information:<S2SV_blank>len<S2SV_blank>%ld;<S2SV_blank>width<S2SV_blank>%ld;<S2SV_blank>height<S2SV_blank>%ld;<S2SV_blank>numplanes<S2SV_blank>%d;<S2SV_blank>\" \"depth<S2SV_blank>%d;<S2SV_blank>enctype<S2SV_blank>%ld;<S2SV_blank>siz<S2SV_blank>%ld;<S2SV_blank>hres<S2SV_blank>%ld;<S2SV_blank>vres<S2SV_blank>%ld;<S2SV_blank>numcolors<S2SV_blank>%ld;<S2SV_blank>\" \"mincolors<S2SV_blank>%ld\\\\n\" , JAS_CAST ( long , info -> len ) , JAS_CAST ( long , info -> width ) , JAS_CAST ( long , info -> height ) , JAS_CAST ( long , info -> numplanes ) , JAS_CAST ( long , info -> depth ) , JAS_CAST ( long , info -> enctype ) , JAS_CAST ( long , info -> siz ) , JAS_CAST ( long , info -> hres ) , JAS_CAST ( long , info -> vres ) , JAS_CAST ( long , info -> numcolors ) , JAS_CAST ( long , info -> mincolors ) ) ) ; if ( info -> width < 0 || info -> height < 0 || info -> numplanes < 0 || info -> depth < 0 || info -> siz < 0 || info -> hres < 0 || info -> vres < 0 ) { <S2SV_StartBug> jas_eprintf ( \"corrupt<S2SV_blank>bit<S2SV_blank>stream\\\\n\" ) ; <S2SV_EndBug> goto error ; } if ( ! bmp_issupported ( & hdr , info ) ) { jas_eprintf ( \"error:<S2SV_blank>unsupported<S2SV_blank>BMP<S2SV_blank>encoding\\\\n\" ) ; goto error ; } if ( ( n = hdr . off - ( BMP_HDRLEN + BMP_INFOLEN + BMP_PALLEN ( info ) ) ) < 0 ) { jas_eprintf ( \"error:<S2SV_blank>possibly<S2SV_blank>bad<S2SV_blank>bitmap<S2SV_blank>offset?\\\\n\" ) ; goto error ; } if ( n > 0 ) { jas_eprintf ( \"skipping<S2SV_blank>unknown<S2SV_blank>data<S2SV_blank>in<S2SV_blank>BMP<S2SV_blank>file\\\\n\" ) ; if ( bmp_gobble ( in , n ) ) { goto error ; } } numcmpts = bmp_numcmpts ( info ) ; for ( cmptno = 0 , cmptparm = cmptparms ; cmptno < numcmpts ; ++ cmptno , ++ cmptparm ) { cmptparm -> tlx = 0 ; cmptparm -> tly = 0 ; cmptparm -> hstep = 1 ; cmptparm -> vstep = 1 ; cmptparm -> width = info -> width ; cmptparm -> height = info -> height ; cmptparm -> prec = 8 ; cmptparm -> sgnd = false ; } if ( ! ( image = jas_image_create ( numcmpts , cmptparms , JAS_CLRSPC_UNKNOWN ) ) ) { goto error ; } if ( numcmpts == 3 ) { jas_image_setclrspc ( image , JAS_CLRSPC_SRGB ) ; jas_image_setcmpttype ( image , 0 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_R ) ) ; jas_image_setcmpttype ( image , 1 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_G ) ) ; jas_image_setcmpttype ( image , 2 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_B ) ) ; } else { jas_image_setclrspc ( image , JAS_CLRSPC_SGRAY ) ; jas_image_setcmpttype ( image , 0 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_GRAY_Y ) ) ; } if ( bmp_getdata ( in , info , image ) ) { goto error ; } bmp_info_destroy ( info ) ; return image ; error : if ( info ) { bmp_info_destroy ( info ) ; } if ( image ) { jas_image_destroy ( image ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long n ; bmp_dec_importopts_t opts ; size_t num_samples ; image = 0 ; info = 0 ; if ( bmp_dec_parseopts ( optstr , & opts ) ) { goto error <S2SV_ModEnd> ; } jas_eprintf <S2SV_ModStart> jas_eprintf ( \"corrupt<S2SV_blank>bit<S2SV_blank>stream\\\\n\" ) ; goto error ; } if ( ! jas_safe_size_mul3 ( info -> width , info -> height , info -> numplanes , & num_samples ) ) { jas_eprintf ( \"image<S2SV_blank>size<S2SV_blank>too<S2SV_blank>large\\\\n\" ) ; goto error ; } if ( opts . max_samples > 0 && num_samples > opts . max_samples ) { jas_eprintf ( \"maximum<S2SV_blank>number<S2SV_blank>of<S2SV_blank>pixels<S2SV_blank>exceeded<S2SV_blank>(%zu)\\\\n\" , opts . max_samples\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty ast_for_classdef ( struct compiling * c , const node * n , asdl_seq * decorator_seq ) { PyObject * classname ; asdl_seq * s ; expr_ty call ; REQ ( n , classdef ) ; if ( NCH ( n ) == 4 ) { s = ast_for_suite ( c , CHILD ( n , 3 ) ) ; if ( ! s ) return NULL ; classname = NEW_IDENTIFIER ( CHILD ( n , 1 ) ) ; if ( ! classname ) return NULL ; if ( forbidden_name ( c , classname , CHILD ( n , 3 ) , 0 ) ) return NULL ; return ClassDef ( classname , NULL , NULL , s , decorator_seq , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } if ( TYPE ( CHILD ( n , 3 ) ) == RPAR ) { s = ast_for_suite ( c , CHILD ( n , 5 ) ) ; if ( ! s ) return NULL ; classname = NEW_IDENTIFIER ( CHILD ( n , 1 ) ) ; if ( ! classname ) return NULL ; if ( forbidden_name ( c , classname , CHILD ( n , 3 ) , 0 ) ) return NULL ; return ClassDef ( classname , NULL , NULL , s , decorator_seq , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } { PyObject * dummy_name ; expr_ty dummy ; dummy_name = NEW_IDENTIFIER ( CHILD ( n , 1 ) ) ; if ( ! dummy_name ) return NULL ; dummy = Name ( dummy_name , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; <S2SV_StartBug> call = ast_for_call ( c , CHILD ( n , 3 ) , dummy ) ; <S2SV_EndBug> if ( ! call ) return NULL ; } s = ast_for_suite ( c , CHILD ( n , 6 ) ) ; if ( ! s ) return NULL ; classname = NEW_IDENTIFIER ( CHILD ( n , 1 ) ) ; if ( ! classname ) return NULL ; if ( forbidden_name ( c , classname , CHILD ( n , 1 ) , 0 ) ) return NULL ; return ClassDef ( classname , call -> v . Call . args , call -> v . Call . keywords , s , decorator_seq , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) , dummy , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12190\n\n```\nCWE-772 struct bio * bio_map_user_iov ( struct request_queue * q , const struct iov_iter * iter , gfp_t gfp_mask ) { int j ; int nr_pages = 0 ; struct page * * pages ; struct bio * bio ; int cur_page = 0 ; int ret , offset ; struct iov_iter i ; <S2SV_StartBug> struct iovec iov ; <S2SV_EndBug> iov_for_each ( iov , i , * iter ) { unsigned long uaddr = ( unsigned long ) iov . iov_base ; unsigned long len = iov . iov_len ; unsigned long end = ( uaddr + len + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; unsigned long start = uaddr >> PAGE_SHIFT ; if ( end < start ) return ERR_PTR ( - EINVAL ) ; nr_pages += end - start ; if ( uaddr & queue_dma_alignment ( q ) ) return ERR_PTR ( - EINVAL ) ; } if ( ! nr_pages ) return ERR_PTR ( - EINVAL ) ; bio = bio_kmalloc ( gfp_mask , nr_pages ) ; if ( ! bio ) return ERR_PTR ( - ENOMEM ) ; ret = - ENOMEM ; pages = kcalloc ( nr_pages , sizeof ( struct page * ) , gfp_mask ) ; if ( ! pages ) goto out ; iov_for_each ( iov , i , * iter ) { unsigned long uaddr = ( unsigned long ) iov . iov_base ; unsigned long len = iov . iov_len ; unsigned long end = ( uaddr + len + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; unsigned long start = uaddr >> PAGE_SHIFT ; const int local_nr_pages = end - start ; const int page_limit = cur_page + local_nr_pages ; ret = get_user_pages_fast ( uaddr , local_nr_pages , ( iter -> type & WRITE ) != WRITE , & pages [ cur_page ] ) ; <S2SV_StartBug> if ( ret < local_nr_pages ) { <S2SV_EndBug> ret = - EFAULT ; goto out_unmap ; } offset = offset_in_page ( uaddr ) ; for ( j = cur_page ; j < page_limit ; j ++ ) { unsigned int bytes = PAGE_SIZE - offset ; unsigned short prev_bi_vcnt = bio -> bi_vcnt ; if ( len <= 0 ) break ; if ( bytes > len ) bytes = len ; if ( bio_add_pc_page ( q , bio , pages [ j ] , bytes , offset ) < bytes ) break ; if ( bio -> bi_vcnt == prev_bi_vcnt ) put_page ( pages [ j ] ) ; len -= bytes ; offset = 0 ; } cur_page = j ; while ( j < page_limit ) put_page ( pages [ j ++ ] ) ; } kfree ( pages ) ; bio_set_flag ( bio , BIO_USER_MAPPED ) ; bio_get ( bio ) ; return bio ; out_unmap : <S2SV_StartBug> for ( j = 0 ; j < nr_pages ; j ++ ) { <S2SV_EndBug> if ( ! pages [ j ] ) break ; put_page ( pages [ j ] ) ; } out : kfree ( pages ) ; bio_put ( bio ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct iovec iov ; struct bio_vec * bvec <S2SV_ModStart> ; if ( unlikely ( <S2SV_ModStart> < local_nr_pages ) ) { for ( j = cur_page ; j < page_limit ; j ++ ) { if ( ! pages [ j ] ) break ; put_page ( pages [ j ] ) ; } <S2SV_ModEnd> ret = - <S2SV_ModStart> ; out_unmap : bio_for_each_segment_all ( bvec , bio , j ) { put_page ( bvec -> bv_page <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0206\n\n```\nCWE-000 static long aio_read_events_ring ( struct kioctx * ctx , struct io_event __user * event , long nr ) { struct aio_ring * ring ; unsigned head , tail , pos ; long ret = 0 ; int copy_ret ; mutex_lock ( & ctx -> ring_lock ) ; ring = kmap_atomic ( ctx -> ring_pages [ 0 ] ) ; head = ring -> head ; tail = ring -> tail ; kunmap_atomic ( ring ) ; pr_debug ( \"h%u<S2SV_blank>t%u<S2SV_blank>m%u\\\\n\" , head , tail , ctx -> nr_events ) ; if ( head == tail ) goto out ; <S2SV_StartBug> while ( ret < nr ) { <S2SV_EndBug> long avail ; struct io_event * ev ; struct page * page ; avail = ( head <= tail ? tail : ctx -> nr_events ) - head ; if ( head == tail ) break ; avail = min ( avail , nr - ret ) ; avail = min_t ( long , avail , AIO_EVENTS_PER_PAGE - ( ( head + AIO_EVENTS_OFFSET ) % AIO_EVENTS_PER_PAGE ) ) ; pos = head + AIO_EVENTS_OFFSET ; page = ctx -> ring_pages [ pos / AIO_EVENTS_PER_PAGE ] ; pos %= AIO_EVENTS_PER_PAGE ; ev = kmap ( page ) ; copy_ret = copy_to_user ( event + ret , ev + pos , sizeof ( * ev ) * avail ) ; kunmap ( page ) ; if ( unlikely ( copy_ret ) ) { ret = - EFAULT ; goto out ; } ret += avail ; head += avail ; head %= ctx -> nr_events ; } ring = kmap_atomic ( ctx -> ring_pages [ 0 ] ) ; ring -> head = head ; kunmap_atomic ( ring ) ; flush_dcache_page ( ctx -> ring_pages [ 0 ] ) ; pr_debug ( \"%li<S2SV_blank><S2SV_blank>h%u<S2SV_blank>t%u\\\\n\" , ret , head , tail ) ; out : mutex_unlock ( & ctx -> ring_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; head %= ctx -> nr_events ; tail %= ctx -> nr_events ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6538\n\n```\nCWE-200 static int copy_to_user_auth ( struct xfrm_algo_auth * auth , struct sk_buff * skb ) { struct xfrm_algo * algo ; struct nlattr * nla ; nla = nla_reserve ( skb , XFRMA_ALG_AUTH , sizeof ( * algo ) + ( auth -> alg_key_len + 7 ) / 8 ) ; if ( ! nla ) return - EMSGSIZE ; algo = nla_data ( nla ) ; <S2SV_StartBug> strcpy ( algo -> alg_name , auth -> alg_name ) ; <S2SV_EndBug> memcpy ( algo -> alg_key , auth -> alg_key , ( auth -> alg_key_len + 7 ) / 8 ) ; algo -> alg_key_len = auth -> alg_key_len ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nla ) ; strncpy <S2SV_ModEnd> ( algo -> <S2SV_ModStart> auth -> alg_name , sizeof ( algo -> alg_name )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3744\n\n```\nCWE-119 static BT_HDR * create_pbuf ( UINT16 len , UINT8 * data ) { <S2SV_StartBug> BT_HDR * p_buf = GKI_getbuf ( ( UINT16 ) ( len + BTA_HH_MIN_OFFSET + sizeof ( BT_HDR ) ) ) ; <S2SV_EndBug> if ( p_buf ) { UINT8 * pbuf_data ; p_buf -> len = len ; p_buf -> offset = BTA_HH_MIN_OFFSET ; pbuf_data = ( UINT8 * ) ( p_buf + 1 ) + p_buf -> offset ; memcpy ( pbuf_data , data , len ) ; } return p_buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { UINT16 buflen = <S2SV_ModEnd> ( UINT16 ) <S2SV_ModStart> BT_HDR ) ) ; if ( buflen < len ) { android_errorWriteWithInfoLog ( 0x534e4554 , \"28672558\" , - 1 , NULL , 0 ) ; return NULL ; } BT_HDR * p_buf = GKI_getbuf ( buflen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t httpClientFormatAuthorizationField ( HttpClientContext * context ) { size_t n ; char_t * p ; HttpClientAuthParams * authParams ; if ( context -> bufferLen < 2 || context -> bufferLen > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_INVALID_SYNTAX ; authParams = & context -> authParams ; # if ( HTTP_CLIENT_BASIC_AUTH_SUPPORT == ENABLED ) if ( authParams -> mode == HTTP_AUTH_MODE_BASIC ) { size_t k ; size_t m ; n = osStrlen ( authParams -> username ) + osStrlen ( authParams -> password ) ; if ( ( context -> bufferLen + n + 22 ) > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_BUFFER_OVERFLOW ; p = context -> buffer + context -> bufferLen - 2 ; n = osSprintf ( p , \"Authorization:<S2SV_blank>Basic<S2SV_blank>\" ) ; m = osSprintf ( p + n , \"%s:%s\" , authParams -> username , authParams -> password ) ; base64Encode ( p + n , m , NULL , & k ) ; if ( ( context -> bufferLen + n + k ) > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_BUFFER_OVERFLOW ; base64Encode ( p + n , m , p + n , & k ) ; n += k ; if ( ( context -> bufferLen + n + 2 ) > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_BUFFER_OVERFLOW ; osSprintf ( p + n , \"\\\\r\\\\n\\\\r\\\\n\" ) ; context -> bufferLen = context -> bufferLen + n + 2 ; } else # endif # if ( HTTP_CLIENT_DIGEST_AUTH_SUPPORT == ENABLED ) if ( authParams -> mode == HTTP_AUTH_MODE_DIGEST ) { error_t error ; const char_t * q ; const char_t * uri ; size_t uriLen ; char_t response [ HTTP_CLIENT_MAX_RESPONSE_LEN + 1 ] ; context -> buffer [ context -> bufferLen ] = '\\\\0' ; <S2SV_StartBug> q = strchr ( context -> buffer , '<S2SV_blank>' ) ; <S2SV_EndBug> if ( q == NULL ) return ERROR_INVALID_SYNTAX ; uri = q + 1 ; <S2SV_StartBug> q = strchr ( uri , '<S2SV_blank>' ) ; <S2SV_EndBug> if ( q == NULL ) return ERROR_INVALID_SYNTAX ; uriLen = q - uri ; if ( authParams -> qop == HTTP_AUTH_QOP_AUTH || authParams -> qop == HTTP_AUTH_QOP_AUTH_INT ) { if ( context -> randCallback == NULL ) return ERROR_PRNG_NOT_READY ; error = context -> randCallback ( authParams -> cnonce , HTTP_CLIENT_CNONCE_SIZE ) ; if ( error ) return error ; httpEncodeHexString ( authParams -> cnonce , HTTP_CLIENT_CNONCE_SIZE , authParams -> cnonce ) ; authParams -> nc ++ ; } error = httpClientComputeDigest ( authParams , context -> method , osStrlen ( context -> method ) , uri , uriLen , response ) ; if ( error ) return error ; n = osStrlen ( authParams -> username ) + osStrlen ( authParams -> realm ) + uriLen + osStrlen ( authParams -> nonce ) + osStrlen ( authParams -> cnonce ) + osStrlen ( response ) + osStrlen ( authParams -> opaque ) ; if ( ( context -> bufferLen + n + 121 ) > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_BUFFER_OVERFLOW ; p = context -> buffer + context -> bufferLen - 2 ; n = osSprintf ( p , \"Authorization:<S2SV_blank>Digest<S2SV_blank>\" ) ; n += osSprintf ( p + n , \"username=\\\\\"%s\\\\\",<S2SV_blank>\" , authParams -> username ) ; n += osSprintf ( p + n , \"realm=\\\\\"%s\\\\\",<S2SV_blank>\" , authParams -> realm ) ; n += osSprintf ( p + n , \"uri=\\\\\"\" ) ; osStrncpy ( p + n , uri , uriLen ) ; n += uriLen ; n += osSprintf ( p + n , \"\\\\\",<S2SV_blank>\" ) ; n += osSprintf ( p + n , \"nonce=\\\\\"%s\\\\\",<S2SV_blank>\" , authParams -> nonce ) ; if ( authParams -> qop == HTTP_AUTH_QOP_AUTH ) { n += osSprintf ( p + n , \"qop=auth,<S2SV_blank>\" ) ; n += osSprintf ( p + n , \"nc=%08x,<S2SV_blank>\" , authParams -> nc ) ; n += osSprintf ( p + n , \"cnonce=\\\\\"%s\\\\\",<S2SV_blank>\" , authParams -> cnonce ) ; } n += osSprintf ( p + n , \"response=\\\\\"%s\\\\\"\" , response ) ; if ( authParams -> opaque [ 0 ] != '\\\\0' ) { n += osSprintf ( p + n , \",<S2SV_blank>opaque=\\\\\"%s\\\\\"\" , authParams -> opaque ) ; } osSprintf ( p + n , \"\\\\r\\\\n\\\\r\\\\n\" ) ; context -> bufferLen = context -> bufferLen + n + 2 ; } else # endif { } return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; q = osStrchr <S2SV_ModEnd> ( context -> <S2SV_ModStart> ; q = osStrchr <S2SV_ModEnd> ( uri ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3183\n\n```\nCWE-125 void color_sycc_to_rgb ( opj_image_t * img ) { if ( img -> numcomps < 3 ) { img -> color_space = OPJ_CLRSPC_GRAY ; return ; } if ( ( img -> comps [ 0 ] . dx == 1 ) && ( img -> comps [ 1 ] . dx == 2 ) && ( img -> comps [ 2 ] . dx == 2 ) && ( img -> comps [ 0 ] . dy == 1 ) && ( img -> comps [ 1 ] . dy == 2 ) && ( img -> comps [ 2 ] . dy == 2 ) ) { sycc420_to_rgb ( img ) ; } else if ( ( img -> comps [ 0 ] . dx == 1 ) && ( img -> comps [ 1 ] . dx == 2 ) && ( img -> comps [ 2 ] . dx == 2 ) && ( img -> comps [ 0 ] . dy == 1 ) && ( img -> comps [ 1 ] . dy == 1 ) && ( img -> comps [ 2 ] . dy == 1 ) ) { sycc422_to_rgb ( img ) ; } else if ( ( img -> comps [ 0 ] . dx == 1 ) && ( img -> comps [ 1 ] . dx == 1 ) && ( img -> comps [ 2 ] . dx == 1 ) && ( img -> comps [ 0 ] . dy == 1 ) && ( img -> comps [ 1 ] . dy == 1 ) && ( img -> comps [ 2 ] . dy == 1 ) ) { sycc444_to_rgb ( img ) ; } else { fprintf ( stderr , \"%s:%d:color_sycc_to_rgb\\\\n\\\\tCAN<S2SV_blank>NOT<S2SV_blank>CONVERT\\\\n\" , __FILE__ , __LINE__ ) ; return ; } <S2SV_StartBug> img -> color_space = OPJ_CLRSPC_SRGB ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 int sas_discover_end_dev ( struct domain_device * dev ) { int res ; res = sas_notify_lldd_dev_found ( dev ) ; if ( res ) return res ; <S2SV_StartBug> sas_discover_event ( dev -> port , DISCE_PROBE ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 void hostap_setup_dev ( struct net_device * dev , local_info_t * local , int type ) { struct hostap_interface * iface ; iface = netdev_priv ( dev ) ; <S2SV_StartBug> ether_setup ( dev ) ; <S2SV_EndBug> if ( iface ) { iface -> wireless_data . spy_data = & iface -> spy_data ; dev -> wireless_data = & iface -> wireless_data ; } dev -> wireless_handlers = & hostap_iw_handler_def ; dev -> watchdog_timeo = TX_TIMEOUT ; switch ( type ) { case HOSTAP_INTERFACE_AP : dev -> tx_queue_len = 0 ; dev -> netdev_ops = & hostap_mgmt_netdev_ops ; dev -> type = ARPHRD_IEEE80211 ; dev -> header_ops = & hostap_80211_ops ; break ; case HOSTAP_INTERFACE_MASTER : dev -> netdev_ops = & hostap_master_ops ; break ; default : dev -> tx_queue_len = 0 ; dev -> netdev_ops = & hostap_netdev_ops ; } dev -> mtu = local -> mtu ; SET_ETHTOOL_OPS ( dev , & prism2_ethtool_ops ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( dev ) ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int accept_server_socket ( int sfd ) { struct sockaddr_un remote ; struct pollfd pfd ; int fd ; socklen_t len = sizeof ( struct sockaddr_un ) ; BTIF_TRACE_EVENT ( \"accept<S2SV_blank>fd<S2SV_blank>%d\" , sfd ) ; pfd . fd = sfd ; pfd . events = POLLIN ; <S2SV_StartBug> if ( poll ( & pfd , 1 , 0 ) == 0 ) <S2SV_EndBug> { BTIF_TRACE_EVENT ( \"accept<S2SV_blank>poll<S2SV_blank>timeout\" ) ; return - 1 ; } <S2SV_StartBug> if ( ( fd = accept ( sfd , ( struct sockaddr * ) & remote , & len ) ) == - 1 ) <S2SV_EndBug> { BTIF_TRACE_ERROR ( \"sock<S2SV_blank>accept<S2SV_blank>failed<S2SV_blank>(%s)\" , strerror ( errno ) ) ; return - 1 ; } return fd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> 1 , 0 ) <S2SV_ModStart> ( fd = TEMP_FAILURE_RETRY ( <S2SV_ModStart> , & len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20217\n\n```\nCWE-617 static krb5_error_code s4u_identify_user ( krb5_context context , krb5_creds * in_creds , krb5_data * subject_cert , krb5_principal * canon_user ) { krb5_error_code code ; krb5_preauthtype ptypes [ 1 ] = { KRB5_PADATA_S4U_X509_USER } ; krb5_creds creds ; int use_master = 0 ; krb5_get_init_creds_opt * opts = NULL ; krb5_principal_data client ; krb5_s4u_userid userid ; * canon_user = NULL ; if ( in_creds -> client == NULL && subject_cert == NULL ) { return EINVAL ; } if ( in_creds -> client != NULL && in_creds -> client -> type != KRB5_NT_ENTERPRISE_PRINCIPAL ) { int anonymous ; anonymous = krb5_principal_compare ( context , in_creds -> client , krb5_anonymous_principal ( ) ) ; return krb5_copy_principal ( context , anonymous ? in_creds -> server : in_creds -> client , canon_user ) ; } memset ( & creds , 0 , sizeof ( creds ) ) ; memset ( & userid , 0 , sizeof ( userid ) ) ; if ( subject_cert != NULL ) userid . subject_cert = * subject_cert ; code = krb5_get_init_creds_opt_alloc ( context , & opts ) ; if ( code != 0 ) goto cleanup ; krb5_get_init_creds_opt_set_tkt_life ( opts , 15 ) ; krb5_get_init_creds_opt_set_renew_life ( opts , 0 ) ; krb5_get_init_creds_opt_set_forwardable ( opts , 0 ) ; krb5_get_init_creds_opt_set_proxiable ( opts , 0 ) ; krb5_get_init_creds_opt_set_canonicalize ( opts , 1 ) ; krb5_get_init_creds_opt_set_preauth_list ( opts , ptypes , 1 ) ; if ( in_creds -> client != NULL ) { client = * in_creds -> client ; client . realm = in_creds -> server -> realm ; } else { client . magic = KV5M_PRINCIPAL ; client . realm = in_creds -> server -> realm ; client . data = NULL ; client . length = 0 ; client . type = KRB5_NT_ENTERPRISE_PRINCIPAL ; } code = k5_get_init_creds ( context , & creds , & client , NULL , NULL , 0 , NULL , opts , krb5_get_as_key_noop , & userid , & use_master , NULL ) ; <S2SV_StartBug> if ( code == 0 || code == KRB5_PREAUTH_FAILED ) { <S2SV_EndBug> * canon_user = userid . user ; userid . user = NULL ; code = 0 ; } cleanup : krb5_free_cred_contents ( context , & creds ) ; if ( opts != NULL ) krb5_get_init_creds_opt_free ( context , opts ) ; if ( userid . user != NULL ) krb5_free_principal ( context , userid . user ) ; return code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! code <S2SV_ModEnd> || code == <S2SV_ModStart> code == KRB5_PREAUTH_FAILED || code == KRB5KDC_ERR_KEY_EXP\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12146\n\n```\nCWE-362 static ssize_t driver_override_store ( struct device * dev , struct device_attribute * attr , const char * buf , size_t count ) { struct platform_device * pdev = to_platform_device ( dev ) ; <S2SV_StartBug> char * driver_override , * old = pdev -> driver_override , * cp ; <S2SV_EndBug> if ( count > PATH_MAX ) return - EINVAL ; driver_override = kstrndup ( buf , count , GFP_KERNEL ) ; if ( ! driver_override ) return - ENOMEM ; cp = strchr ( driver_override , '\\\\n' ) ; if ( cp ) * cp = '\\\\0' ; <S2SV_StartBug> if ( strlen ( driver_override ) ) { <S2SV_EndBug> pdev -> driver_override = driver_override ; } else { kfree ( driver_override ) ; pdev -> driver_override = NULL ; } <S2SV_StartBug> kfree ( old ) ; <S2SV_EndBug> return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * old <S2SV_ModEnd> , * cp <S2SV_ModStart> = '\\\\0' ; device_lock ( dev ) ; old = pdev -> driver_override ; <S2SV_ModStart> NULL ; } device_unlock ( dev ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7842\n\n```\nCWE-362 static int handle_emulation_failure ( struct kvm_vcpu * vcpu ) { int r = EMULATE_DONE ; ++ vcpu -> stat . insn_emulation_fail ; trace_kvm_emulate_insn_failed ( vcpu ) ; <S2SV_StartBug> if ( ! is_guest_mode ( vcpu ) ) { <S2SV_EndBug> vcpu -> run -> exit_reason = KVM_EXIT_INTERNAL_ERROR ; vcpu -> run -> internal . suberror = KVM_INTERNAL_ERROR_EMULATION ; vcpu -> run -> internal . ndata = 0 ; r = EMULATE_FAIL ; } kvm_queue_exception ( vcpu , UD_VECTOR ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( vcpu ) && kvm_x86_ops -> get_cpl ( vcpu ) == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4646\n\n```\nCWE-20 int read_xattrs_from_disk ( int fd , struct squashfs_super_block * sBlk , int flag , long long * table_start ) { <S2SV_StartBug> int res , bytes , i , indexes , index_bytes , ids ; <S2SV_EndBug> long long * index , start , end ; struct squashfs_xattr_table id_table ; TRACE ( \"read_xattrs_from_disk\\\\n\" ) ; if ( sBlk -> xattr_id_table_start == SQUASHFS_INVALID_BLK ) return SQUASHFS_INVALID_BLK ; res = read_fs_bytes ( fd , sBlk -> xattr_id_table_start , sizeof ( id_table ) , & id_table ) ; if ( res == 0 ) return 0 ; SQUASHFS_INSWAP_XATTR_TABLE ( & id_table ) ; <S2SV_StartBug> if ( flag ) { <S2SV_EndBug> * table_start = id_table . xattr_table_start ; <S2SV_StartBug> return id_table . xattr_ids ; <S2SV_EndBug> } ids = id_table . xattr_ids ; xattr_table_start = id_table . xattr_table_start ; index_bytes = SQUASHFS_XATTR_BLOCK_BYTES ( ids ) ; indexes = SQUASHFS_XATTR_BLOCKS ( ids ) ; index = malloc ( index_bytes ) ; if ( index == NULL ) MEM_ERROR ( ) ; <S2SV_StartBug> res = read_fs_bytes ( fd , sBlk -> xattr_id_table_start + sizeof ( id_table ) , <S2SV_EndBug> index_bytes , index ) ; if ( res == 0 ) goto failed1 ; SQUASHFS_INSWAP_LONG_LONGS ( index , indexes ) ; <S2SV_StartBug> bytes = SQUASHFS_XATTR_BYTES ( ids ) ; <S2SV_EndBug> xattr_ids = malloc ( bytes ) ; if ( xattr_ids == NULL ) MEM_ERROR ( ) ; for ( i = 0 ; i < indexes ; i ++ ) { int expected = ( i + 1 ) != indexes ? SQUASHFS_METADATA_SIZE : bytes & ( SQUASHFS_METADATA_SIZE - 1 ) ; int length = read_block ( fd , index [ i ] , NULL , expected , ( ( unsigned char * ) xattr_ids ) + <S2SV_StartBug> ( i * SQUASHFS_METADATA_SIZE ) ) ; <S2SV_EndBug> TRACE ( \"Read<S2SV_blank>xattr<S2SV_blank>id<S2SV_blank>table<S2SV_blank>block<S2SV_blank>%d,<S2SV_blank>from<S2SV_blank>0x%llx,<S2SV_blank>length<S2SV_blank>\" \"%d\\\\n\" , i , index [ i ] , length ) ; if ( length == 0 ) { ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>xattr<S2SV_blank>id<S2SV_blank>table<S2SV_blank>block<S2SV_blank>%d,<S2SV_blank>\" \"from<S2SV_blank>0x%llx,<S2SV_blank>length<S2SV_blank>%d\\\\n\" , i , index [ i ] , length ) ; goto failed2 ; } } start = xattr_table_start ; end = index [ 0 ] ; for ( i = 0 ; start < end ; i ++ ) { int length ; xattrs = realloc ( xattrs , ( i + 1 ) * SQUASHFS_METADATA_SIZE ) ; if ( xattrs == NULL ) MEM_ERROR ( ) ; save_xattr_block ( start , i * SQUASHFS_METADATA_SIZE ) ; length = read_block ( fd , start , & start , 0 , ( ( unsigned char * ) xattrs ) + ( i * SQUASHFS_METADATA_SIZE ) ) ; TRACE ( \"Read<S2SV_blank>xattr<S2SV_blank>block<S2SV_blank>%d,<S2SV_blank>length<S2SV_blank>%d\\\\n\" , i , length ) ; if ( length == 0 ) { ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>xattr<S2SV_blank>block<S2SV_blank>%d\\\\n\" , i ) ; goto failed3 ; } if ( start != end && length != SQUASHFS_METADATA_SIZE ) { ERROR ( \"Xattr<S2SV_blank>block<S2SV_blank>%d<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>length,<S2SV_blank>\" \"it<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , i , SQUASHFS_METADATA_SIZE , length ) ; goto failed3 ; } } for ( i = 0 ; i < ids ; i ++ ) SQUASHFS_INSWAP_XATTR_ID ( & xattr_ids [ i ] ) ; free ( index ) ; return ids ; failed3 : free ( xattrs ) ; failed2 : free ( xattr_ids ) ; failed1 : free ( index ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int res , i , indexes , index_bytes ; unsigned int ids ; long long bytes <S2SV_ModEnd> ; long long <S2SV_ModStart> id_table ) ; ids = id_table . xattr_ids ; xattr_table_start <S2SV_ModEnd> = id_table . <S2SV_ModStart> . xattr_table_start ; index_bytes = SQUASHFS_XATTR_BLOCK_BYTES ( ( long long ) ids ) ; indexes = SQUASHFS_XATTR_BLOCKS ( ( long long ) ids ) ; if ( index_bytes != ( sBlk -> bytes_used - ( <S2SV_ModEnd> sBlk -> xattr_id_table_start <S2SV_ModStart> ( id_table ) ) ) ) { ERROR ( \"read_xattrs_from_disk:<S2SV_blank>Bad<S2SV_blank>xattr_ids<S2SV_blank>count<S2SV_blank>in<S2SV_blank>super<S2SV_blank>block\\\\n\" ) ; return 0 ; } if ( table_start != NULL ) * table_start = id_table . xattr_table_start ; if ( flag ) return id_table . xattr_ids ; index = malloc ( index_bytes ) ; if ( index == NULL ) MEM_ERROR ( ) ; res = read_fs_bytes ( fd , sBlk -> xattr_id_table_start + sizeof ( id_table ) <S2SV_ModStart> = SQUASHFS_XATTR_BYTES ( ( long long ) <S2SV_ModStart> ) + ( ( long long )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 static void rose_loopback_timer ( unsigned long param ) { struct sk_buff * skb ; struct net_device * dev ; rose_address * dest ; struct sock * sk ; unsigned short frametype ; unsigned int lci_i , lci_o ; <S2SV_StartBug> while ( ( skb = skb_dequeue ( & loopback_queue ) ) != NULL ) { <S2SV_EndBug> lci_i = ( ( skb -> data [ 0 ] << 8 ) & 0xF00 ) + ( ( skb -> data [ 1 ] << 0 ) & 0x0FF ) ; frametype = skb -> data [ 2 ] ; <S2SV_StartBug> dest = ( rose_address * ) ( skb -> data + 4 ) ; <S2SV_EndBug> lci_o = ROSE_DEFAULT_MAXVC + 1 - lci_i ; skb_reset_transport_header ( skb ) ; sk = rose_find_socket ( lci_o , rose_loopback_neigh ) ; if ( sk ) { if ( rose_process_rx_frame ( sk , skb ) == 0 ) kfree_skb ( skb ) ; continue ; } if ( frametype == ROSE_CALL_REQUEST ) { if ( ( dev = rose_dev_get ( dest ) ) != NULL ) { if ( rose_rx_call_request ( skb , dev , rose_loopback_neigh , lci_o ) == 0 ) kfree_skb ( skb ) ; } else { kfree_skb ( skb ) ; } } else { kfree_skb ( skb ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { if ( skb -> len < ROSE_MIN_LEN ) { kfree_skb ( skb ) ; continue ; } <S2SV_ModStart> 2 ] ; if ( frametype == ROSE_CALL_REQUEST && ( skb -> len <= ROSE_CALL_REQ_FACILITIES_OFF || skb -> data [ ROSE_CALL_REQ_ADDR_LEN_OFF ] != ROSE_CALL_REQ_ADDR_LEN_VAL ) ) { kfree_skb ( skb ) ; continue ; } <S2SV_ModStart> -> data + ROSE_CALL_REQ_DEST_ADDR_OFF <S2SV_ModEnd> ) ; lci_o\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12988\n\n```\nCWE-125 static int telnet_parse ( netdissect_options * ndo , const u_char * sp , u_int length , int print ) { int i , x ; u_int c ; const u_char * osp , * p ; # define FETCH ( c , sp , length ) do { if ( length < 1 ) goto pktend ; ND_TCHECK ( * sp ) ; c = * sp ++ ; length -- ; } while ( 0 ) osp = sp ; FETCH ( c , sp , length ) ; if ( c != IAC ) goto pktend ; FETCH ( c , sp , length ) ; if ( c == IAC ) { if ( print ) ND_PRINT ( ( ndo , \"IAC<S2SV_blank>IAC\" ) ) ; goto done ; } i = c - TELCMD_FIRST ; if ( i < 0 || i > IAC - TELCMD_FIRST ) goto pktend ; switch ( c ) { case DONT : case DO : case WONT : case WILL : case SB : FETCH ( x , sp , length ) ; if ( x >= 0 && x < NTELOPTS ) { if ( print ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>%s\" , telcmds [ i ] , telopts [ x ] ) ) ; } else { if ( print ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>%#x\" , telcmds [ i ] , x ) ) ; } if ( c != SB ) break ; p = sp ; while ( length > ( u_int ) ( p + 1 - sp ) ) { ND_TCHECK2 ( * p , 2 ) ; if ( p [ 0 ] == IAC && p [ 1 ] == SE ) break ; p ++ ; } <S2SV_StartBug> if ( * p != IAC ) <S2SV_EndBug> goto pktend ; switch ( x ) { case TELOPT_AUTHENTICATION : if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , authcmd ) ) ) ; if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , authtype ) ) ) ; break ; case TELOPT_ENCRYPT : if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , enccmd ) ) ) ; if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , enctype ) ) ) ; break ; default : if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , cmds ) ) ) ; break ; } while ( p > sp ) { FETCH ( x , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%#x\" , x ) ) ; } if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>SE\" ) ) ; sp += 2 ; break ; default : if ( print ) ND_PRINT ( ( ndo , \"%s\" , telcmds [ i ] ) ) ; goto done ; } done : return sp - osp ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; pktend : return - 1 ; # undef FETCH }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ; } ND_TCHECK ( * p ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1929\n\n```\nCWE-119 static void tg3_read_vpd ( struct tg3 * tp ) { u8 * vpd_data ; unsigned int block_end , rosize , len ; u32 vpdlen ; int j , i = 0 ; vpd_data = ( u8 * ) tg3_vpd_readblock ( tp , & vpdlen ) ; if ( ! vpd_data ) goto out_no_vpd ; i = pci_vpd_find_tag ( vpd_data , 0 , vpdlen , PCI_VPD_LRDT_RO_DATA ) ; if ( i < 0 ) goto out_not_found ; rosize = pci_vpd_lrdt_size ( & vpd_data [ i ] ) ; block_end = i + PCI_VPD_LRDT_TAG_SIZE + rosize ; i += PCI_VPD_LRDT_TAG_SIZE ; if ( block_end > vpdlen ) goto out_not_found ; j = pci_vpd_find_info_keyword ( vpd_data , i , rosize , PCI_VPD_RO_KEYWORD_MFR_ID ) ; if ( j > 0 ) { len = pci_vpd_info_field_size ( & vpd_data [ j ] ) ; j += PCI_VPD_INFO_FLD_HDR_SIZE ; if ( j + len > block_end || len != 4 || memcmp ( & vpd_data [ j ] , \"1028\" , 4 ) ) goto partno ; j = pci_vpd_find_info_keyword ( vpd_data , i , rosize , PCI_VPD_RO_KEYWORD_VENDOR0 ) ; if ( j < 0 ) goto partno ; len = pci_vpd_info_field_size ( & vpd_data [ j ] ) ; j += PCI_VPD_INFO_FLD_HDR_SIZE ; if ( j + len > block_end ) goto partno ; <S2SV_StartBug> memcpy ( tp -> fw_ver , & vpd_data [ j ] , len ) ; <S2SV_EndBug> <S2SV_StartBug> strncat ( tp -> fw_ver , \"<S2SV_blank>bc<S2SV_blank>\" , vpdlen - len - 1 ) ; <S2SV_EndBug> } partno : i = pci_vpd_find_info_keyword ( vpd_data , i , rosize , PCI_VPD_RO_KEYWORD_PARTNO ) ; if ( i < 0 ) goto out_not_found ; len = pci_vpd_info_field_size ( & vpd_data [ i ] ) ; i += PCI_VPD_INFO_FLD_HDR_SIZE ; if ( len > TG3_BPN_SIZE || ( len + i ) > vpdlen ) goto out_not_found ; memcpy ( tp -> board_part_number , & vpd_data [ i ] , len ) ; out_not_found : kfree ( vpd_data ) ; if ( tp -> board_part_number [ 0 ] ) return ; out_no_vpd : if ( tg3_asic_rev ( tp ) == ASIC_REV_5717 ) { if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_5717 || tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_5717_C ) strcpy ( tp -> board_part_number , \"BCM5717\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_5718 ) strcpy ( tp -> board_part_number , \"BCM5718\" ) ; else goto nomatch ; } else if ( tg3_asic_rev ( tp ) == ASIC_REV_57780 ) { if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57780 ) strcpy ( tp -> board_part_number , \"BCM57780\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57760 ) strcpy ( tp -> board_part_number , \"BCM57760\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57790 ) strcpy ( tp -> board_part_number , \"BCM57790\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57788 ) strcpy ( tp -> board_part_number , \"BCM57788\" ) ; else goto nomatch ; } else if ( tg3_asic_rev ( tp ) == ASIC_REV_57765 ) { if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57761 ) strcpy ( tp -> board_part_number , \"BCM57761\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57765 ) strcpy ( tp -> board_part_number , \"BCM57765\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57781 ) strcpy ( tp -> board_part_number , \"BCM57781\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57785 ) strcpy ( tp -> board_part_number , \"BCM57785\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57791 ) strcpy ( tp -> board_part_number , \"BCM57791\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57795 ) strcpy ( tp -> board_part_number , \"BCM57795\" ) ; else goto nomatch ; } else if ( tg3_asic_rev ( tp ) == ASIC_REV_57766 ) { if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57762 ) strcpy ( tp -> board_part_number , \"BCM57762\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57766 ) strcpy ( tp -> board_part_number , \"BCM57766\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57782 ) strcpy ( tp -> board_part_number , \"BCM57782\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57786 ) strcpy ( tp -> board_part_number , \"BCM57786\" ) ; else goto nomatch ; } else if ( tg3_asic_rev ( tp ) == ASIC_REV_5906 ) { strcpy ( tp -> board_part_number , \"BCM95906\" ) ; } else { nomatch : strcpy ( tp -> board_part_number , \"none\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto partno ; if ( len >= sizeof <S2SV_ModEnd> ( tp -> <S2SV_ModStart> tp -> fw_ver ) ) len = sizeof <S2SV_ModEnd> ( tp -> <S2SV_ModStart> tp -> fw_ver ) - 1 ; memset ( tp -> fw_ver , 0 , sizeof ( tp -> fw_ver ) ) ; snprintf ( tp -> fw_ver , sizeof ( tp -> fw_ver ) , \"%.*s<S2SV_blank>bc<S2SV_blank>\" , len , & vpd_data [ j ] <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1146\n\n```\nCWE-000 static void mem_cgroup_usage_unregister_event ( struct cgroup * cgrp , struct cftype * cft , struct eventfd_ctx * eventfd ) { struct mem_cgroup * memcg = mem_cgroup_from_cont ( cgrp ) ; struct mem_cgroup_thresholds * thresholds ; struct mem_cgroup_threshold_ary * new ; int type = MEMFILE_TYPE ( cft -> private ) ; u64 usage ; int i , j , size ; mutex_lock ( & memcg -> thresholds_lock ) ; if ( type == _MEM ) thresholds = & memcg -> thresholds ; else if ( type == _MEMSWAP ) thresholds = & memcg -> memsw_thresholds ; else BUG ( ) ; <S2SV_StartBug> BUG_ON ( ! thresholds ) ; <S2SV_EndBug> usage = mem_cgroup_usage ( memcg , type == _MEMSWAP ) ; __mem_cgroup_threshold ( memcg , type == _MEMSWAP ) ; size = 0 ; for ( i = 0 ; i < thresholds -> primary -> size ; i ++ ) { if ( thresholds -> primary -> entries [ i ] . eventfd != eventfd ) size ++ ; } new = thresholds -> spare ; if ( ! size ) { kfree ( new ) ; new = NULL ; goto swap_buffers ; } new -> size = size ; new -> current_threshold = - 1 ; for ( i = 0 , j = 0 ; i < thresholds -> primary -> size ; i ++ ) { if ( thresholds -> primary -> entries [ i ] . eventfd == eventfd ) continue ; new -> entries [ j ] = thresholds -> primary -> entries [ i ] ; if ( new -> entries [ j ] . threshold < usage ) { ++ new -> current_threshold ; } j ++ ; } swap_buffers : thresholds -> spare = thresholds -> primary ; rcu_assign_pointer ( thresholds -> primary , new ) ; synchronize_rcu ( ) ; <S2SV_StartBug> mutex_unlock ( & memcg -> thresholds_lock ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! thresholds ) ; if ( ! thresholds -> primary ) goto unlock <S2SV_ModStart> ( ) ; unlock :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8543\n\n```\nCWE-000 static int inet6_create ( struct net * net , struct socket * sock , int protocol , int kern ) { struct inet_sock * inet ; struct ipv6_pinfo * np ; struct sock * sk ; struct inet_protosw * answer ; struct proto * answer_prot ; unsigned char answer_flags ; int try_loading_module = 0 ; <S2SV_StartBug> int err ; <S2SV_EndBug> lookup_protocol : err = - ESOCKTNOSUPPORT ; rcu_read_lock ( ) ; list_for_each_entry_rcu ( answer , & inetsw6 [ sock -> type ] , list ) { err = 0 ; if ( protocol == answer -> protocol ) { if ( protocol != IPPROTO_IP ) break ; } else { if ( IPPROTO_IP == protocol ) { protocol = answer -> protocol ; break ; } if ( IPPROTO_IP == answer -> protocol ) break ; } err = - EPROTONOSUPPORT ; } if ( err ) { if ( try_loading_module < 2 ) { rcu_read_unlock ( ) ; if ( ++ try_loading_module == 1 ) request_module ( \"net-pf-%d-proto-%d-type-%d\" , PF_INET6 , protocol , sock -> type ) ; else request_module ( \"net-pf-%d-proto-%d\" , PF_INET6 , protocol ) ; goto lookup_protocol ; } else goto out_rcu_unlock ; } err = - EPERM ; if ( sock -> type == SOCK_RAW && ! kern && ! ns_capable ( net -> user_ns , CAP_NET_RAW ) ) goto out_rcu_unlock ; sock -> ops = answer -> ops ; answer_prot = answer -> prot ; answer_flags = answer -> flags ; rcu_read_unlock ( ) ; WARN_ON ( ! answer_prot -> slab ) ; err = - ENOBUFS ; sk = sk_alloc ( net , PF_INET6 , GFP_KERNEL , answer_prot , kern ) ; if ( ! sk ) goto out ; sock_init_data ( sock , sk ) ; err = 0 ; if ( INET_PROTOSW_REUSE & answer_flags ) sk -> sk_reuse = SK_CAN_REUSE ; inet = inet_sk ( sk ) ; inet -> is_icsk = ( INET_PROTOSW_ICSK & answer_flags ) != 0 ; if ( SOCK_RAW == sock -> type ) { inet -> inet_num = protocol ; if ( IPPROTO_RAW == protocol ) inet -> hdrincl = 1 ; } sk -> sk_destruct = inet_sock_destruct ; sk -> sk_family = PF_INET6 ; sk -> sk_protocol = protocol ; sk -> sk_backlog_rcv = answer -> prot -> backlog_rcv ; inet_sk ( sk ) -> pinet6 = np = inet6_sk_generic ( sk ) ; np -> hop_limit = - 1 ; np -> mcast_hops = IPV6_DEFAULT_MCASTHOPS ; np -> mc_loop = 1 ; np -> pmtudisc = IPV6_PMTUDISC_WANT ; np -> autoflowlabel = ip6_default_np_autolabel ( sock_net ( sk ) ) ; sk -> sk_ipv6only = net -> ipv6 . sysctl . bindv6only ; inet -> uc_ttl = - 1 ; inet -> mc_loop = 1 ; inet -> mc_ttl = 1 ; inet -> mc_index = 0 ; inet -> mc_list = NULL ; inet -> rcv_tos = 0 ; if ( net -> ipv4 . sysctl_ip_no_pmtu_disc ) inet -> pmtudisc = IP_PMTUDISC_DONT ; else inet -> pmtudisc = IP_PMTUDISC_WANT ; sk_refcnt_debug_inc ( sk ) ; if ( inet -> inet_num ) { inet -> inet_sport = htons ( inet -> inet_num ) ; sk -> sk_prot -> hash ( sk ) ; } if ( sk -> sk_prot -> init ) { err = sk -> sk_prot -> init ( sk ) ; if ( err ) { sk_common_release ( sk ) ; goto out ; } } out : return err ; out_rcu_unlock : rcu_read_unlock ( ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int err ; if ( protocol < 0 || protocol >= IPPROTO_MAX ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9710\n\n```\nCWE-362 <S2SV_StartBug> static struct btrfs_dir_item * btrfs_match_dir_item_name ( struct btrfs_root * root , <S2SV_EndBug> struct btrfs_path * path , const char * name , int name_len ) { struct btrfs_dir_item * dir_item ; unsigned long name_ptr ; u32 total_len ; u32 cur = 0 ; u32 this_len ; struct extent_buffer * leaf ; leaf = path -> nodes [ 0 ] ; dir_item = btrfs_item_ptr ( leaf , path -> slots [ 0 ] , struct btrfs_dir_item ) ; if ( verify_dir_item ( root , leaf , dir_item ) ) return NULL ; total_len = btrfs_item_size_nr ( leaf , path -> slots [ 0 ] ) ; while ( cur < total_len ) { this_len = sizeof ( * dir_item ) + btrfs_dir_name_len ( leaf , dir_item ) + btrfs_dir_data_len ( leaf , dir_item ) ; name_ptr = ( unsigned long ) ( dir_item + 1 ) ; if ( btrfs_dir_name_len ( leaf , dir_item ) == name_len && memcmp_extent_buffer ( leaf , name , name_ptr , name_len ) == 0 ) return dir_item ; cur += this_len ; dir_item = ( struct btrfs_dir_item * ) ( ( char * ) dir_item + this_len ) ; } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> struct btrfs_dir_item *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4163\n\n```\nCWE-399 <S2SV_StartBug> static void ip6_append_data_mtu ( int * mtu , <S2SV_EndBug> int * maxfraglen , unsigned int fragheaderlen , struct sk_buff * skb , <S2SV_StartBug> struct rt6_info * rt ) <S2SV_EndBug> { if ( ! ( rt -> dst . flags & DST_XFRM_TUNNEL ) ) { if ( skb == NULL ) { * mtu = * mtu - rt -> dst . header_len ; } else { <S2SV_StartBug> * mtu = dst_mtu ( rt -> dst . path ) ; <S2SV_EndBug> } * maxfraglen = ( ( * mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ip6_append_data_mtu ( unsigned <S2SV_ModStart> rt6_info * rt , bool pmtuprobe <S2SV_ModStart> * mtu = min ( * mtu , pmtuprobe ? rt -> dst . dev -> mtu : <S2SV_ModStart> dst . path )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void alpha_perf_event_irq_handler ( unsigned long la_ptr , struct pt_regs * regs ) { struct cpu_hw_events * cpuc ; struct perf_sample_data data ; struct perf_event * event ; struct hw_perf_event * hwc ; int idx , j ; __get_cpu_var ( irq_pmi_count ) ++ ; cpuc = & __get_cpu_var ( cpu_hw_events ) ; wrperfmon ( PERFMON_CMD_DISABLE , cpuc -> idx_mask ) ; if ( unlikely ( la_ptr >= alpha_pmu -> num_pmcs ) ) { irq_err_count ++ ; pr_warning ( \"PMI:<S2SV_blank>silly<S2SV_blank>index<S2SV_blank>%ld\\\\n\" , la_ptr ) ; wrperfmon ( PERFMON_CMD_ENABLE , cpuc -> idx_mask ) ; return ; } idx = la_ptr ; perf_sample_data_init ( & data , 0 ) ; for ( j = 0 ; j < cpuc -> n_events ; j ++ ) { if ( cpuc -> current_idx [ j ] == idx ) break ; } if ( unlikely ( j == cpuc -> n_events ) ) { wrperfmon ( PERFMON_CMD_ENABLE , cpuc -> idx_mask ) ; return ; } event = cpuc -> event [ j ] ; if ( unlikely ( ! event ) ) { irq_err_count ++ ; pr_warning ( \"PMI:<S2SV_blank>No<S2SV_blank>event<S2SV_blank>at<S2SV_blank>index<S2SV_blank>%d!\\\\n\" , idx ) ; wrperfmon ( PERFMON_CMD_ENABLE , cpuc -> idx_mask ) ; return ; } hwc = & event -> hw ; alpha_perf_event_update ( event , hwc , idx , alpha_pmu -> pmc_max_period [ idx ] + 1 ) ; data . period = event -> hw . last_period ; if ( alpha_perf_event_set_period ( event , hwc , idx ) ) { <S2SV_StartBug> if ( perf_event_overflow ( event , 1 , & data , regs ) ) { <S2SV_EndBug> alpha_pmu_stop ( event , 0 ) ; } } wrperfmon ( PERFMON_CMD_ENABLE , cpuc -> idx_mask ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( event , <S2SV_ModEnd> & data ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum varbit_in ( PG_FUNCTION_ARGS ) { char * input_string = PG_GETARG_CSTRING ( 0 ) ; # ifdef NOT_USED Oid typelem = PG_GETARG_OID ( 1 ) ; # endif int32 atttypmod = PG_GETARG_INT32 ( 2 ) ; VarBit * result ; char * sp ; bits8 * r ; int len , bitlen , slen ; bool bit_not_hex ; int bc ; bits8 x = 0 ; if ( input_string [ 0 ] == 'b' || input_string [ 0 ] == 'B' ) { bit_not_hex = true ; sp = input_string + 1 ; } else if ( input_string [ 0 ] == 'x' || input_string [ 0 ] == 'X' ) { bit_not_hex = false ; sp = input_string + 1 ; } else { bit_not_hex = true ; sp = input_string ; } slen = strlen ( sp ) ; if ( bit_not_hex ) bitlen = slen ; else <S2SV_StartBug> bitlen = slen * 4 ; <S2SV_EndBug> if ( atttypmod <= 0 ) atttypmod = bitlen ; else if ( bitlen > atttypmod ) ereport ( ERROR , ( errcode ( ERRCODE_STRING_DATA_RIGHT_TRUNCATION ) , errmsg ( \"bit<S2SV_blank>string<S2SV_blank>too<S2SV_blank>long<S2SV_blank>for<S2SV_blank>type<S2SV_blank>bit<S2SV_blank>varying(%d)\" , atttypmod ) ) ) ; len = VARBITTOTALLEN ( bitlen ) ; result = ( VarBit * ) palloc0 ( len ) ; SET_VARSIZE ( result , len ) ; VARBITLEN ( result ) = Min ( bitlen , atttypmod ) ; r = VARBITS ( result ) ; if ( bit_not_hex ) { x = HIGHBIT ; for ( ; * sp ; sp ++ ) { if ( * sp == '1' ) * r |= x ; else if ( * sp != '0' ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"\\\\\"%c\\\\\"<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>binary<S2SV_blank>digit\" , * sp ) ) ) ; x >>= 1 ; if ( x == 0 ) { x = HIGHBIT ; r ++ ; } } } else { for ( bc = 0 ; * sp ; sp ++ ) { if ( * sp >= '0' && * sp <= '9' ) x = ( bits8 ) ( * sp - '0' ) ; else if ( * sp >= 'A' && * sp <= 'F' ) x = ( bits8 ) ( * sp - 'A' ) + 10 ; else if ( * sp >= 'a' && * sp <= 'f' ) x = ( bits8 ) ( * sp - 'a' ) + 10 ; else ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"\\\\\"%c\\\\\"<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>hexadecimal<S2SV_blank>digit\" , * sp ) ) ) ; if ( bc ) { * r ++ |= x ; bc = 0 ; } else { * r = x << 4 ; bc = 1 ; } } } PG_RETURN_VARBIT_P ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> slen ; else { if ( slen > VARBITMAXLEN / 4 ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"bit<S2SV_blank>string<S2SV_blank>length<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , VARBITMAXLEN ) ) ) ; <S2SV_ModStart> * 4 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3520\n\n```\nCWE-287 static int unix_dgram_sendmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct sock * sk = sock -> sk ; struct net * net = sock_net ( sk ) ; struct unix_sock * u = unix_sk ( sk ) ; struct sockaddr_un * sunaddr = msg -> msg_name ; struct sock * other = NULL ; int namelen = 0 ; int err ; unsigned int hash ; struct sk_buff * skb ; long timeo ; struct scm_cookie tmp_scm ; int max_level ; int data_len = 0 ; if ( NULL == siocb -> scm ) siocb -> scm = & tmp_scm ; wait_for_unix_gc ( ) ; <S2SV_StartBug> err = scm_send ( sock , msg , siocb -> scm ) ; <S2SV_EndBug> if ( err < 0 ) return err ; err = - EOPNOTSUPP ; if ( msg -> msg_flags & MSG_OOB ) goto out ; if ( msg -> msg_namelen ) { err = unix_mkname ( sunaddr , msg -> msg_namelen , & hash ) ; if ( err < 0 ) goto out ; namelen = err ; } else { sunaddr = NULL ; err = - ENOTCONN ; other = unix_peer_get ( sk ) ; if ( ! other ) goto out ; } if ( test_bit ( SOCK_PASSCRED , & sock -> flags ) && ! u -> addr && ( err = unix_autobind ( sock ) ) != 0 ) goto out ; err = - EMSGSIZE ; if ( len > sk -> sk_sndbuf - 32 ) goto out ; if ( len > SKB_MAX_ALLOC ) data_len = min_t ( size_t , len - SKB_MAX_ALLOC , MAX_SKB_FRAGS * PAGE_SIZE ) ; skb = sock_alloc_send_pskb ( sk , len - data_len , data_len , msg -> msg_flags & MSG_DONTWAIT , & err ) ; if ( skb == NULL ) goto out ; err = unix_scm_to_skb ( siocb -> scm , skb , true ) ; if ( err < 0 ) goto out_free ; max_level = err + 1 ; unix_get_secdata ( siocb -> scm , skb ) ; skb_put ( skb , len - data_len ) ; skb -> data_len = data_len ; skb -> len = len ; err = skb_copy_datagram_from_iovec ( skb , 0 , msg -> msg_iov , 0 , len ) ; if ( err ) goto out_free ; timeo = sock_sndtimeo ( sk , msg -> msg_flags & MSG_DONTWAIT ) ; restart : if ( ! other ) { err = - ECONNRESET ; if ( sunaddr == NULL ) goto out_free ; other = unix_find_other ( net , sunaddr , namelen , sk -> sk_type , hash , & err ) ; if ( other == NULL ) goto out_free ; } if ( sk_filter ( other , skb ) < 0 ) { err = len ; goto out_free ; } unix_state_lock ( other ) ; err = - EPERM ; if ( ! unix_may_send ( sk , other ) ) goto out_unlock ; if ( sock_flag ( other , SOCK_DEAD ) ) { unix_state_unlock ( other ) ; sock_put ( other ) ; err = 0 ; unix_state_lock ( sk ) ; if ( unix_peer ( sk ) == other ) { unix_peer ( sk ) = NULL ; unix_state_unlock ( sk ) ; unix_dgram_disconnected ( sk , other ) ; sock_put ( other ) ; err = - ECONNREFUSED ; } else { unix_state_unlock ( sk ) ; } other = NULL ; if ( err ) goto out_free ; goto restart ; } err = - EPIPE ; if ( other -> sk_shutdown & RCV_SHUTDOWN ) goto out_unlock ; if ( sk -> sk_type != SOCK_SEQPACKET ) { err = security_unix_may_send ( sk -> sk_socket , other -> sk_socket ) ; if ( err ) goto out_unlock ; } if ( unix_peer ( other ) != sk && unix_recvq_full ( other ) ) { if ( ! timeo ) { err = - EAGAIN ; goto out_unlock ; } timeo = unix_wait_for_peer ( other , timeo ) ; err = sock_intr_errno ( timeo ) ; if ( signal_pending ( current ) ) goto out_free ; goto restart ; } if ( sock_flag ( other , SOCK_RCVTSTAMP ) ) __net_timestamp ( skb ) ; maybe_add_creds ( skb , sock , other ) ; skb_queue_tail ( & other -> sk_receive_queue , skb ) ; if ( max_level > unix_sk ( other ) -> recursion_level ) unix_sk ( other ) -> recursion_level = max_level ; unix_state_unlock ( other ) ; other -> sk_data_ready ( other , len ) ; sock_put ( other ) ; scm_destroy ( siocb -> scm ) ; return len ; out_unlock : unix_state_unlock ( other ) ; out_free : kfree_skb ( skb ) ; out : if ( other ) sock_put ( other ) ; scm_destroy ( siocb -> scm ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> siocb -> scm , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10250\n\n```\nCWE-476 void jp2_box_dump ( jp2_box_t * box , FILE * out ) { jp2_boxinfo_t * boxinfo ; boxinfo = jp2_boxinfolookup ( box -> type ) ; assert ( boxinfo ) ; fprintf ( out , \"JP2<S2SV_blank>box:<S2SV_blank>\" ) ; fprintf ( out , \"type=%c%s%c<S2SV_blank>(0x%08\" PRIxFAST32 \");<S2SV_blank>length=%\" PRIuFAST32 \"\\\\n\" , \\'\"\\' , boxinfo -> name , \\'\"\\' , box -> type , box -> len ) ; if ( box -> ops -> dumpdata ) { ( * box -> ops -> dumpdata ) ( box , out ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4162\n\n```\nCWE-399 <S2SV_StartBug> static int udp_push_pending_frames ( struct sock * sk ) <S2SV_EndBug> { struct udp_sock * up = udp_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct flowi4 * fl4 = & inet -> cork . fl . u . ip4 ; struct sk_buff * skb ; int err = 0 ; skb = ip_finish_skb ( sk , fl4 ) ; if ( ! skb ) goto out ; err = udp_send_skb ( skb , fl4 ) ; out : up -> len = 0 ; up -> pending = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> int udp_push_pending_frames (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int mount_autodev ( const char * name , const struct lxc_rootfs * rootfs , const char * lxcpath ) { int ret ; size_t clen ; char * path ; INFO ( \"Mounting<S2SV_blank>container<S2SV_blank>/dev\" ) ; clen = ( rootfs -> path ? strlen ( rootfs -> mount ) : 0 ) + 9 ; path = alloca ( clen ) ; ret = snprintf ( path , clen , \"%s/dev\" , rootfs -> path ? rootfs -> mount : \"\" ) ; if ( ret < 0 || ret >= clen ) return - 1 ; if ( ! dir_exists ( path ) ) { WARN ( \"No<S2SV_blank>/dev<S2SV_blank>in<S2SV_blank>container.\" ) ; WARN ( \"Proceeding<S2SV_blank>without<S2SV_blank>autodev<S2SV_blank>setup\" ) ; return 0 ; } <S2SV_StartBug> if ( mount ( \"none\" , path , \"tmpfs\" , 0 , \"size=100000,mode=755\" ) ) { <S2SV_EndBug> SYSERROR ( \"Failed<S2SV_blank>mounting<S2SV_blank>tmpfs<S2SV_blank>onto<S2SV_blank>%s\\\\n\" , path ) ; return false ; } INFO ( \"Mounted<S2SV_blank>tmpfs<S2SV_blank>onto<S2SV_blank>%s\" , path ) ; ret = snprintf ( path , clen , \"%s/dev/pts\" , rootfs -> path ? rootfs -> mount : \"\" ) ; if ( ret < 0 || ret >= clen ) return - 1 ; if ( ! dir_exists ( path ) ) { ret = mkdir ( path , S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH ) ; if ( ret ) { SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>/dev/pts<S2SV_blank>in<S2SV_blank>container\" ) ; return - 1 ; } } INFO ( \"Mounted<S2SV_blank>container<S2SV_blank>/dev\" ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( safe_mount <S2SV_ModEnd> ( \"none\" , <S2SV_ModStart> 0 , \"size=100000,mode=755\" , rootfs -> path ? rootfs -> mount : NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0546\n\n```\nCWE-000 static int list_dbs ( MYSQL * mysql , const char * wild ) { const char * header ; uint length , counter = 0 ; ulong rowcount = 0L ; char tables [ NAME_LEN + 1 ] , rows [ NAME_LEN + 1 ] ; <S2SV_StartBug> char query [ 255 ] ; <S2SV_EndBug> MYSQL_FIELD * field ; MYSQL_RES * result ; MYSQL_ROW row = NULL , rrow ; if ( ! ( result = mysql_list_dbs ( mysql , wild ) ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>list<S2SV_blank>databases:<S2SV_blank>%s\\\\n\" , my_progname , mysql_error ( mysql ) ) ; return 1 ; } if ( wild && mysql_num_rows ( result ) == 1 ) { row = mysql_fetch_row ( result ) ; if ( ! my_strcasecmp ( & my_charset_latin1 , row [ 0 ] , wild ) ) { mysql_free_result ( result ) ; if ( opt_status ) return list_table_status ( mysql , wild , NULL ) ; else return list_tables ( mysql , wild , NULL ) ; } } if ( wild ) printf ( \"Wildcard:<S2SV_blank>%s\\\\n\" , wild ) ; header = \"Databases\" ; length = ( uint ) strlen ( header ) ; field = mysql_fetch_field ( result ) ; if ( length < field -> max_length ) length = field -> max_length ; if ( ! opt_verbose ) print_header ( header , length , NullS ) ; else if ( opt_verbose == 1 ) print_header ( header , length , \"Tables\" , 6 , NullS ) ; else print_header ( header , length , \"Tables\" , 6 , \"Total<S2SV_blank>Rows\" , 12 , NullS ) ; while ( row || ( row = mysql_fetch_row ( result ) ) ) { counter ++ ; if ( opt_verbose ) { if ( ! ( mysql_select_db ( mysql , row [ 0 ] ) ) ) { MYSQL_RES * tresult = mysql_list_tables ( mysql , ( char * ) NULL ) ; if ( mysql_affected_rows ( mysql ) > 0 ) { sprintf ( tables , \"%6lu\" , ( ulong ) mysql_affected_rows ( mysql ) ) ; rowcount = 0 ; if ( opt_verbose > 1 ) { MYSQL_ROW trow ; while ( ( trow = mysql_fetch_row ( tresult ) ) ) { <S2SV_StartBug> sprintf ( query , \"SELECT<S2SV_blank>COUNT(*)<S2SV_blank>FROM<S2SV_blank>`%s`\" , trow [ 0 ] ) ; <S2SV_EndBug> if ( ! ( mysql_query ( mysql , query ) ) ) { MYSQL_RES * rresult ; if ( ( rresult = mysql_store_result ( mysql ) ) ) { rrow = mysql_fetch_row ( rresult ) ; rowcount += ( ulong ) strtoull ( rrow [ 0 ] , ( char * * ) 0 , 10 ) ; mysql_free_result ( rresult ) ; } } } sprintf ( rows , \"%12lu\" , rowcount ) ; } } else { sprintf ( tables , \"%6d\" , 0 ) ; sprintf ( rows , \"%12d\" , 0 ) ; } mysql_free_result ( tresult ) ; } else { strmov ( tables , \"N/A\" ) ; strmov ( rows , \"N/A\" ) ; } } if ( ! opt_verbose ) print_row ( row [ 0 ] , length , 0 ) ; else if ( opt_verbose == 1 ) print_row ( row [ 0 ] , length , tables , 6 , NullS ) ; else print_row ( row [ 0 ] , length , tables , 6 , rows , 12 , NullS ) ; row = NULL ; } print_trailer ( length , ( opt_verbose > 0 ? 6 : 0 ) , ( opt_verbose > 1 ? 12 : 0 ) , 0 ) ; if ( counter && opt_verbose ) printf ( \"%u<S2SV_blank>row%s<S2SV_blank>in<S2SV_blank>set.\\\\n\" , counter , ( counter > 1 ) ? \"s\" : \"\" ) ; mysql_free_result ( result ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char query [ NAME_LEN + 100 <S2SV_ModEnd> ] ; MYSQL_FIELD <S2SV_ModStart> ) ) { my_snprintf <S2SV_ModEnd> ( query , <S2SV_ModStart> ( query , sizeof ( query ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7411\n\n```\nCWE-119 PHPAPI int php_var_unserialize ( UNSERIALIZE_PARAMETER ) { const unsigned char * cursor , * limit , * marker , * start ; zval * * rval_ref ; limit = max ; cursor = * p ; if ( YYCURSOR >= YYLIMIT ) { return 0 ; } if ( var_hash && cursor [ 0 ] != 'R' ) { var_push ( var_hash , rval ) ; } start = cursor ; <S2SV_StartBug> # line 495 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> { YYCTYPE yych ; static const unsigned char yybm [ ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , } ; if ( ( YYLIMIT - YYCURSOR ) < 7 ) YYFILL ( 7 ) ; yych = * YYCURSOR ; switch ( yych ) { case 'C' : case 'O' : goto yy13 ; case 'N' : goto yy5 ; case 'R' : goto yy2 ; case 'S' : goto yy10 ; case 'a' : goto yy11 ; case 'b' : goto yy6 ; case 'd' : goto yy8 ; case 'i' : goto yy7 ; case 'o' : goto yy12 ; case 'r' : goto yy4 ; case 's' : goto yy9 ; case '}' : goto yy14 ; default : goto yy16 ; } yy2 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy95 ; yy3 : <S2SV_StartBug> # line 860 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { return 0 ; } <S2SV_StartBug> # line 557 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy4 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy89 ; goto yy3 ; yy5 : yych = * ++ YYCURSOR ; if ( yych == ';' ) goto yy87 ; goto yy3 ; yy6 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy83 ; goto yy3 ; yy7 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy77 ; goto yy3 ; yy8 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy53 ; goto yy3 ; yy9 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy46 ; goto yy3 ; yy10 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy39 ; goto yy3 ; yy11 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy32 ; goto yy3 ; yy12 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy25 ; goto yy3 ; yy13 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy17 ; goto yy3 ; yy14 : ++ YYCURSOR ; <S2SV_StartBug> # line 854 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { php_error_docref ( NULL TSRMLS_CC , E_NOTICE , \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>serialized<S2SV_blank>data\" ) ; return 0 ; } <S2SV_StartBug> # line 606 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy16 : yych = * ++ YYCURSOR ; goto yy3 ; yy17 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych == '+' ) goto yy19 ; yy18 : YYCURSOR = YYMARKER ; goto yy3 ; yy19 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } goto yy18 ; yy20 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych <= '/' ) goto yy18 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 707 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , len2 , len3 , maxlen ; long elements ; char * class_name ; zend_class_entry * ce ; zend_class_entry * * pce ; int incomplete_class = 0 ; int custom_object = 0 ; zval * user_func ; zval * retval_ptr ; zval * * args [ 1 ] ; zval * arg_func_name ; if ( ! var_hash ) return 0 ; if ( * start == 'C' ) { custom_object = 1 ; } INIT_PZVAL ( * rval ) ; len2 = len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len || len == 0 ) { * p = start + 2 ; return 0 ; } class_name = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ':' ) { * p = YYCURSOR + 1 ; return 0 ; } len3 = strspn ( class_name , \"0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\\\\177\\\\200\\\\201\\\\202\\\\203\\\\204\\\\205\\\\206\\\\207\\\\210\\\\211\\\\212\\\\213\\\\214\\\\215\\\\216\\\\217\\\\220\\\\221\\\\222\\\\223\\\\224\\\\225\\\\226\\\\227\\\\230\\\\231\\\\232\\\\233\\\\234\\\\235\\\\236\\\\237\\\\240\\\\241\\\\242\\\\243\\\\244\\\\245\\\\246\\\\247\\\\250\\\\251\\\\252\\\\253\\\\254\\\\255\\\\256\\\\257\\\\260\\\\261\\\\262\\\\263\\\\264\\\\265\\\\266\\\\267\\\\270\\\\271\\\\272\\\\273\\\\274\\\\275\\\\276\\\\277\\\\300\\\\301\\\\302\\\\303\\\\304\\\\305\\\\306\\\\307\\\\310\\\\311\\\\312\\\\313\\\\314\\\\315\\\\316\\\\317\\\\320\\\\321\\\\322\\\\323\\\\324\\\\325\\\\326\\\\327\\\\330\\\\331\\\\332\\\\333\\\\334\\\\335\\\\336\\\\337\\\\340\\\\341\\\\342\\\\343\\\\344\\\\345\\\\346\\\\347\\\\350\\\\351\\\\352\\\\353\\\\354\\\\355\\\\356\\\\357\\\\360\\\\361\\\\362\\\\363\\\\364\\\\365\\\\366\\\\367\\\\370\\\\371\\\\372\\\\373\\\\374\\\\375\\\\376\\\\377\\\\\\\\\" ) ; if ( len3 != len ) { * p = YYCURSOR + len3 - len ; return 0 ; } class_name = estrndup ( class_name , len ) ; do { BG ( serialize_lock ) ++ ; if ( zend_lookup_class ( class_name , len2 , & pce TSRMLS_CC ) == SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; return 0 ; } ce = * pce ; break ; } BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; return 0 ; } if ( ( PG ( unserialize_callback_func ) == NULL ) || ( PG ( unserialize_callback_func ) [ 0 ] == '\\\\0' ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } MAKE_STD_ZVAL ( user_func ) ; ZVAL_STRING ( user_func , PG ( unserialize_callback_func ) , 1 ) ; args [ 0 ] = & arg_func_name ; MAKE_STD_ZVAL ( arg_func_name ) ; ZVAL_STRING ( arg_func_name , class_name , 1 ) ; BG ( serialize_lock ) ++ ; if ( call_user_function_ex ( CG ( function_table ) , NULL , user_func , & retval_ptr , 1 , args , 0 , NULL TSRMLS_CC ) != SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; return 0 ; } php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"defined<S2SV_blank>(%s)<S2SV_blank>but<S2SV_blank>not<S2SV_blank>found\" , user_func -> value . str . val ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; break ; } BG ( serialize_lock ) -- ; if ( retval_ptr ) { zval_ptr_dtor ( & retval_ptr ) ; } if ( EG ( exception ) ) { efree ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; return 0 ; } if ( zend_lookup_class ( class_name , len2 , & pce TSRMLS_CC ) == SUCCESS ) { ce = * pce ; } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Function<S2SV_blank>%s()<S2SV_blank>hasn\\'t<S2SV_blank>defined<S2SV_blank>the<S2SV_blank>class<S2SV_blank>it<S2SV_blank>was<S2SV_blank>called<S2SV_blank>for\" , user_func -> value . str . val ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; } zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; break ; } while ( 1 ) ; * p = YYCURSOR ; if ( custom_object ) { int ret ; ret = object_custom ( UNSERIALIZE_PASSTHRU , ce ) ; if ( ret && incomplete_class ) { php_store_class_name ( * rval , class_name , len2 ) ; } efree ( class_name ) ; return ret ; } elements = object_common1 ( UNSERIALIZE_PASSTHRU , ce ) ; if ( incomplete_class ) { php_store_class_name ( * rval , class_name , len2 ) ; } efree ( class_name ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } <S2SV_StartBug> # line 784 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy25 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy26 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; goto yy18 ; } yy26 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy27 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 698 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { if ( ! var_hash ) return 0 ; INIT_PZVAL ( * rval ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ) ; } <S2SV_StartBug> # line 818 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy32 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy33 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; goto yy18 ; yy33 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy34 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != '{' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 677 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long elements = parse_iv ( start + 2 ) ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; if ( elements < 0 ) { return 0 ; } INIT_PZVAL ( * rval ) ; array_init_size ( * rval , elements ) ; if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_ARRVAL_PP ( rval ) , elements , 0 ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; } <S2SV_StartBug> # line 860 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy39 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy40 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; goto yy18 ; yy40 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy41 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 642 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } if ( ( str = unserialize_str ( & YYCURSOR , & len , maxlen ) ) == NULL ) { return 0 ; } if ( * ( YYCURSOR ) != \\'\"\\' ) { efree ( str ) ; * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { efree ( str ) ; * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_STRINGL ( * rval , str , len , 0 ) ; return 1 ; } <S2SV_StartBug> # line 916 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy46 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy47 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; goto yy18 ; yy47 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy48 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 609 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_STRINGL ( * rval , str , len , 1 ) ; return 1 ; } <S2SV_StartBug> # line 970 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy53 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych <= ',' ) { if ( yych == '+' ) goto yy57 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy55 ; if ( yych <= '.' ) goto yy60 ; goto yy18 ; } } else { if ( yych <= 'I' ) { if ( yych <= '9' ) goto yy58 ; if ( yych <= 'H' ) goto yy18 ; goto yy56 ; } else { if ( yych != 'N' ) goto yy18 ; } } yych = * ++ YYCURSOR ; if ( yych == 'A' ) goto yy76 ; goto yy18 ; yy55 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych == '.' ) goto yy60 ; goto yy18 ; } else { if ( yych <= '9' ) goto yy58 ; if ( yych != 'I' ) goto yy18 ; } yy56 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy72 ; goto yy18 ; yy57 : yych = * ++ YYCURSOR ; if ( yych == '.' ) goto yy60 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy58 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ':' ) { if ( yych <= '.' ) { if ( yych <= '-' ) goto yy18 ; goto yy70 ; } else { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy58 ; goto yy18 ; } } else { if ( yych <= 'E' ) { if ( yych <= ';' ) goto yy63 ; if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy60 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy61 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy61 ; if ( yych <= ':' ) goto yy18 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy63 : ++ YYCURSOR ; <S2SV_StartBug> # line 599 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { # if SIZEOF_LONG == 4 use_double : # endif * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_DOUBLE ( * rval , zend_strtod ( ( const char * ) start + 2 , NULL ) ) ; return 1 ; } <S2SV_StartBug> # line 1068 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy65 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy66 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; } yy66 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy69 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy69 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; } yy67 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; if ( yych == ';' ) goto yy63 ; goto yy18 ; yy69 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; yy70 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy70 ; if ( yych <= ':' ) goto yy18 ; goto yy63 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy72 : yych = * ++ YYCURSOR ; if ( yych != 'F' ) goto yy18 ; yy73 : yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 584 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; if ( ! strncmp ( start + 2 , \"NAN\" , 3 ) ) { ZVAL_DOUBLE ( * rval , php_get_nan ( ) ) ; } else if ( ! strncmp ( start + 2 , \"INF\" , 3 ) ) { ZVAL_DOUBLE ( * rval , php_get_inf ( ) ) ; } else if ( ! strncmp ( start + 2 , \"-INF\" , 4 ) ) { ZVAL_DOUBLE ( * rval , - php_get_inf ( ) ) ; } return 1 ; } <S2SV_StartBug> # line 1142 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy76 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy73 ; goto yy18 ; yy77 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy78 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; goto yy18 ; } yy78 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy79 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 557 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { # if SIZEOF_LONG == 4 int digits = YYCURSOR - start - 3 ; if ( start [ 2 ] == '-' || start [ 2 ] == '+' ) { digits -- ; } if ( digits >= MAX_LENGTH_OF_LONG - 1 ) { if ( digits == MAX_LENGTH_OF_LONG - 1 ) { int cmp = strncmp ( YYCURSOR - MAX_LENGTH_OF_LONG , long_min_digits , MAX_LENGTH_OF_LONG - 1 ) ; if ( ! ( cmp < 0 || ( cmp == 0 && start [ 2 ] == '-' ) ) ) { goto use_double ; } } else { goto use_double ; } } # endif * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_LONG ( * rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1196 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy83 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= '2' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 550 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_BOOL ( * rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1211 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy87 : ++ YYCURSOR ; <S2SV_StartBug> # line 543 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_NULL ( * rval ) ; return 1 ; } <S2SV_StartBug> # line 1221 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy89 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy90 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; goto yy18 ; } yy90 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy91 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 520 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || var_access ( var_hash , id , & rval_ref ) != SUCCESS ) { return 0 ; } if ( * rval == * rval_ref ) return 0 ; if ( * rval != NULL ) { var_push_dtor_no_addref ( var_hash , rval ) ; } * rval = * rval_ref ; Z_ADDREF_PP ( rval ) ; Z_UNSET_ISREF_PP ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1267 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy95 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy96 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; goto yy18 ; } yy96 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy97 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 499 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || var_access ( var_hash , id , & rval_ref ) != SUCCESS ) { return 0 ; } if ( * rval != NULL ) { var_push_dtor_no_addref ( var_hash , rval ) ; } * rval = * rval_ref ; Z_ADDREF_PP ( rval ) ; Z_SET_ISREF_PP ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1311 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> } <S2SV_StartBug> # line 862 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # line 496 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" { YYCTYPE <S2SV_ModStart> : # line 861 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { return <S2SV_ModStart> } # line 558 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy4 : <S2SV_ModStart> ; # line 855 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { php_error_docref <S2SV_ModStart> } # line 607 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy16 : <S2SV_ModStart> ; # line 708 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 785 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy25 : <S2SV_ModStart> ; # line 699 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { if <S2SV_ModStart> } # line 819 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy32 : <S2SV_ModStart> ; # line 678 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 861 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy39 : <S2SV_ModStart> ; # line 643 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 917 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy46 : <S2SV_ModStart> ; # line 610 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 971 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy53 : <S2SV_ModStart> ; # line 600 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1069 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy65 : <S2SV_ModStart> ; # line 585 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1143 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy76 : <S2SV_ModStart> ; # line 558 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1197 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy83 : <S2SV_ModStart> ; # line 551 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1212 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy87 : <S2SV_ModStart> ; # line 544 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1222 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy89 : <S2SV_ModStart> ; # line 521 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 1268 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy95 : <S2SV_ModStart> ; # line 500 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 1312 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" } # <S2SV_ModStart> } # line 863 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0879\n\n```\nCWE-20 static struct task_struct * copy_process ( unsigned long clone_flags , unsigned long stack_start , struct pt_regs * regs , unsigned long stack_size , int __user * child_tidptr , struct pid * pid , int trace ) { int retval ; struct task_struct * p ; int cgroup_callbacks_done = 0 ; if ( ( clone_flags & ( CLONE_NEWNS | CLONE_FS ) ) == ( CLONE_NEWNS | CLONE_FS ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_THREAD ) && ! ( clone_flags & CLONE_SIGHAND ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_SIGHAND ) && ! ( clone_flags & CLONE_VM ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_PARENT ) && current -> signal -> flags & SIGNAL_UNKILLABLE ) return ERR_PTR ( - EINVAL ) ; retval = security_task_create ( clone_flags ) ; if ( retval ) goto fork_out ; retval = - ENOMEM ; p = dup_task_struct ( current ) ; if ( ! p ) goto fork_out ; ftrace_graph_init_task ( p ) ; rt_mutex_init_task ( p ) ; # ifdef CONFIG_PROVE_LOCKING DEBUG_LOCKS_WARN_ON ( ! p -> hardirqs_enabled ) ; DEBUG_LOCKS_WARN_ON ( ! p -> softirqs_enabled ) ; # endif retval = - EAGAIN ; if ( atomic_read ( & p -> real_cred -> user -> processes ) >= p -> signal -> rlim [ RLIMIT_NPROC ] . rlim_cur ) { if ( ! capable ( CAP_SYS_ADMIN ) && ! capable ( CAP_SYS_RESOURCE ) && p -> real_cred -> user != INIT_USER ) goto bad_fork_free ; } retval = copy_creds ( p , clone_flags ) ; if ( retval < 0 ) goto bad_fork_free ; retval = - EAGAIN ; if ( nr_threads >= max_threads ) goto bad_fork_cleanup_count ; if ( ! try_module_get ( task_thread_info ( p ) -> exec_domain -> module ) ) goto bad_fork_cleanup_count ; p -> did_exec = 0 ; delayacct_tsk_init ( p ) ; copy_flags ( clone_flags , p ) ; INIT_LIST_HEAD ( & p -> children ) ; INIT_LIST_HEAD ( & p -> sibling ) ; rcu_copy_process ( p ) ; p -> vfork_done = NULL ; spin_lock_init ( & p -> alloc_lock ) ; init_sigpending ( & p -> pending ) ; p -> utime = cputime_zero ; p -> stime = cputime_zero ; p -> gtime = cputime_zero ; p -> utimescaled = cputime_zero ; p -> stimescaled = cputime_zero ; p -> prev_utime = cputime_zero ; p -> prev_stime = cputime_zero ; p -> default_timer_slack_ns = current -> timer_slack_ns ; task_io_accounting_init ( & p -> ioac ) ; acct_clear_integrals ( p ) ; posix_cpu_timers_init ( p ) ; p -> lock_depth = - 1 ; do_posix_clock_monotonic_gettime ( & p -> start_time ) ; p -> real_start_time = p -> start_time ; monotonic_to_bootbased ( & p -> real_start_time ) ; p -> io_context = NULL ; p -> audit_context = NULL ; cgroup_fork ( p ) ; # ifdef CONFIG_NUMA p -> mempolicy = mpol_dup ( p -> mempolicy ) ; if ( IS_ERR ( p -> mempolicy ) ) { retval = PTR_ERR ( p -> mempolicy ) ; p -> mempolicy = NULL ; goto bad_fork_cleanup_cgroup ; } mpol_fix_fork_child_flag ( p ) ; # endif # ifdef CONFIG_TRACE_IRQFLAGS p -> irq_events = 0 ; # ifdef __ARCH_WANT_INTERRUPTS_ON_CTXSW p -> hardirqs_enabled = 1 ; # else p -> hardirqs_enabled = 0 ; # endif p -> hardirq_enable_ip = 0 ; p -> hardirq_enable_event = 0 ; p -> hardirq_disable_ip = _THIS_IP_ ; p -> hardirq_disable_event = 0 ; p -> softirqs_enabled = 1 ; p -> softirq_enable_ip = _THIS_IP_ ; p -> softirq_enable_event = 0 ; p -> softirq_disable_ip = 0 ; p -> softirq_disable_event = 0 ; p -> hardirq_context = 0 ; p -> softirq_context = 0 ; # endif # ifdef CONFIG_LOCKDEP p -> lockdep_depth = 0 ; p -> curr_chain_key = 0 ; p -> lockdep_recursion = 0 ; # endif # ifdef CONFIG_DEBUG_MUTEXES p -> blocked_on = NULL ; # endif p -> bts = NULL ; p -> stack_start = stack_start ; sched_fork ( p , clone_flags ) ; retval = perf_event_init_task ( p ) ; if ( retval ) goto bad_fork_cleanup_policy ; if ( ( retval = audit_alloc ( p ) ) ) goto bad_fork_cleanup_policy ; if ( ( retval = copy_semundo ( clone_flags , p ) ) ) goto bad_fork_cleanup_audit ; if ( ( retval = copy_files ( clone_flags , p ) ) ) goto bad_fork_cleanup_semundo ; if ( ( retval = copy_fs ( clone_flags , p ) ) ) goto bad_fork_cleanup_files ; if ( ( retval = copy_sighand ( clone_flags , p ) ) ) goto bad_fork_cleanup_fs ; if ( ( retval = copy_signal ( clone_flags , p ) ) ) goto bad_fork_cleanup_sighand ; if ( ( retval = copy_mm ( clone_flags , p ) ) ) goto bad_fork_cleanup_signal ; if ( ( retval = copy_namespaces ( clone_flags , p ) ) ) goto bad_fork_cleanup_mm ; if ( ( retval = copy_io ( clone_flags , p ) ) ) goto bad_fork_cleanup_namespaces ; retval = copy_thread ( clone_flags , stack_start , stack_size , p , regs ) ; if ( retval ) goto bad_fork_cleanup_io ; if ( pid != & init_struct_pid ) { retval = - ENOMEM ; pid = alloc_pid ( p -> nsproxy -> pid_ns ) ; if ( ! pid ) goto bad_fork_cleanup_io ; if ( clone_flags & CLONE_NEWPID ) { retval = pid_ns_prepare_proc ( p -> nsproxy -> pid_ns ) ; if ( retval < 0 ) goto bad_fork_free_pid ; } } p -> pid = pid_nr ( pid ) ; p -> tgid = p -> pid ; if ( clone_flags & CLONE_THREAD ) p -> tgid = current -> tgid ; if ( current -> nsproxy != p -> nsproxy ) { retval = ns_cgroup_clone ( p , pid ) ; if ( retval ) goto bad_fork_free_pid ; } p -> set_child_tid = ( clone_flags & CLONE_CHILD_SETTID ) ? child_tidptr : NULL ; p -> clear_child_tid = ( clone_flags & CLONE_CHILD_CLEARTID ) ? child_tidptr : NULL ; # ifdef CONFIG_FUTEX p -> robust_list = NULL ; # ifdef CONFIG_COMPAT p -> compat_robust_list = NULL ; # endif INIT_LIST_HEAD ( & p -> pi_state_list ) ; p -> pi_state_cache = NULL ; # endif if ( ( clone_flags & ( CLONE_VM | CLONE_VFORK ) ) == CLONE_VM ) p -> sas_ss_sp = p -> sas_ss_size = 0 ; clear_tsk_thread_flag ( p , TIF_SYSCALL_TRACE ) ; # ifdef TIF_SYSCALL_EMU clear_tsk_thread_flag ( p , TIF_SYSCALL_EMU ) ; # endif clear_all_latency_tracing ( p ) ; p -> exit_signal = ( clone_flags & CLONE_THREAD ) ? - 1 : ( clone_flags & CSIGNAL ) ; p -> pdeath_signal = 0 ; p -> exit_state = 0 ; p -> group_leader = p ; INIT_LIST_HEAD ( & p -> thread_group ) ; cgroup_fork_callbacks ( p ) ; cgroup_callbacks_done = 1 ; write_lock_irq ( & tasklist_lock ) ; p -> cpus_allowed = current -> cpus_allowed ; p -> rt . nr_cpus_allowed = current -> rt . nr_cpus_allowed ; if ( unlikely ( ! cpu_isset ( task_cpu ( p ) , p -> cpus_allowed ) || ! cpu_online ( task_cpu ( p ) ) ) ) set_task_cpu ( p , smp_processor_id ( ) ) ; if ( clone_flags & ( CLONE_PARENT | CLONE_THREAD ) ) { p -> real_parent = current -> real_parent ; p -> parent_exec_id = current -> parent_exec_id ; } else { p -> real_parent = current ; p -> parent_exec_id = current -> self_exec_id ; } spin_lock ( & current -> sighand -> siglock ) ; recalc_sigpending ( ) ; if ( signal_pending ( current ) ) { spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; retval = - ERESTARTNOINTR ; goto bad_fork_free_pid ; } if ( clone_flags & CLONE_THREAD ) { atomic_inc ( & current -> signal -> count ) ; atomic_inc ( & current -> signal -> live ) ; p -> group_leader = current -> group_leader ; list_add_tail_rcu ( & p -> thread_group , & p -> group_leader -> thread_group ) ; } if ( likely ( p -> pid ) ) { list_add_tail ( & p -> sibling , & p -> real_parent -> children ) ; tracehook_finish_clone ( p , clone_flags , trace ) ; if ( thread_group_leader ( p ) ) { if ( clone_flags & CLONE_NEWPID ) p -> nsproxy -> pid_ns -> child_reaper = p ; p -> signal -> leader_pid = pid ; tty_kref_put ( p -> signal -> tty ) ; p -> signal -> tty = tty_kref_get ( current -> signal -> tty ) ; attach_pid ( p , PIDTYPE_PGID , task_pgrp ( current ) ) ; attach_pid ( p , PIDTYPE_SID , task_session ( current ) ) ; list_add_tail_rcu ( & p -> tasks , & init_task . tasks ) ; __get_cpu_var ( process_counts ) ++ ; } attach_pid ( p , PIDTYPE_PID , pid ) ; nr_threads ++ ; } total_forks ++ ; spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; proc_fork_connector ( p ) ; cgroup_post_fork ( p ) ; perf_event_fork ( p ) ; return p ; bad_fork_free_pid : if ( pid != & init_struct_pid ) free_pid ( pid ) ; bad_fork_cleanup_io : <S2SV_StartBug> put_io_context ( p -> io_context ) ; <S2SV_EndBug> bad_fork_cleanup_namespaces : exit_task_namespaces ( p ) ; bad_fork_cleanup_mm : if ( p -> mm ) mmput ( p -> mm ) ; bad_fork_cleanup_signal : if ( ! ( clone_flags & CLONE_THREAD ) ) __cleanup_signal ( p -> signal ) ; bad_fork_cleanup_sighand : __cleanup_sighand ( p -> sighand ) ; bad_fork_cleanup_fs : exit_fs ( p ) ; bad_fork_cleanup_files : exit_files ( p ) ; bad_fork_cleanup_semundo : exit_sem ( p ) ; bad_fork_cleanup_audit : audit_free ( p ) ; bad_fork_cleanup_policy : perf_event_free_task ( p ) ; # ifdef CONFIG_NUMA mpol_put ( p -> mempolicy ) ; bad_fork_cleanup_cgroup : # endif cgroup_exit ( p , cgroup_callbacks_done ) ; delayacct_tsk_free ( p ) ; module_put ( task_thread_info ( p ) -> exec_domain -> module ) ; bad_fork_cleanup_count : atomic_dec ( & p -> cred -> user -> processes ) ; exit_creds ( p ) ; bad_fork_free : free_task ( p ) ; fork_out : return ERR_PTR ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bad_fork_cleanup_io : if <S2SV_ModEnd> ( p -> <S2SV_ModStart> p -> io_context ) exit_io_context ( p\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 <S2SV_StartBug> void kvm_lapic_set_vapic_addr ( struct kvm_vcpu * vcpu , gpa_t vapic_addr ) <S2SV_EndBug> { <S2SV_StartBug> vcpu -> arch . apic -> vapic_addr = vapic_addr ; <S2SV_EndBug> if ( vapic_addr ) __set_bit ( KVM_APIC_CHECK_VAPIC , & vcpu -> arch . apic_attention ) ; <S2SV_StartBug> else <S2SV_EndBug> __clear_bit ( KVM_APIC_CHECK_VAPIC , & vcpu -> arch . apic_attention ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> int <S2SV_ModEnd> kvm_lapic_set_vapic_addr ( struct <S2SV_ModStart> vapic_addr ) { if ( vapic_addr ) { if ( kvm_gfn_to_hva_cache_init ( vcpu -> kvm , & <S2SV_ModStart> . apic -> vapic_cache , vapic_addr , sizeof ( u32 ) ) ) return - EINVAL ; <S2SV_ModEnd> __set_bit ( KVM_APIC_CHECK_VAPIC <S2SV_ModStart> apic_attention ) ; } else { <S2SV_ModEnd> __clear_bit ( KVM_APIC_CHECK_VAPIC <S2SV_ModStart> ) ; } vcpu -> arch . apic -> vapic_addr = vapic_addr ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 static int timer_start ( Unit * u ) { Timer * t = TIMER ( u ) ; TimerValue * v ; assert ( t ) ; assert ( t -> state == TIMER_DEAD || t -> state == TIMER_FAILED ) ; if ( UNIT_TRIGGER ( u ) -> load_state != UNIT_LOADED ) return - ENOENT ; t -> last_trigger = DUAL_TIMESTAMP_NULL ; LIST_FOREACH ( value , v , t -> values ) if ( v -> base == TIMER_ACTIVE ) v -> disabled = false ; if ( t -> stamp_path ) { struct stat st ; if ( stat ( t -> stamp_path , & st ) >= 0 ) t -> last_trigger . realtime = timespec_load ( & st . st_atim ) ; else if ( errno == ENOENT ) <S2SV_StartBug> touch_file ( t -> stamp_path , true , USEC_INFINITY , UID_INVALID , GID_INVALID , 0 ) ; <S2SV_EndBug> } t -> result = TIMER_SUCCESS ; timer_enter_waiting ( t , true ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , GID_INVALID , MODE_INVALID <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6345\n\n```\nCWE-20 static void llc_sap_rcv ( struct llc_sap * sap , struct sk_buff * skb , struct sock * sk ) { struct llc_sap_state_ev * ev = llc_sap_ev ( skb ) ; ev -> type = LLC_SAP_EV_TYPE_PDU ; ev -> reason = 0 ; <S2SV_StartBug> skb -> sk = sk ; <S2SV_EndBug> llc_sap_state_process ( sap , skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; skb_orphan ( skb ) ; sock_hold ( sk ) ; <S2SV_ModStart> sk = sk ; skb -> destructor = sock_efree\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16995\n\n```\nCWE-772 int hsr_dev_finalize ( struct net_device * hsr_dev , struct net_device * slave [ 2 ] , unsigned char multicast_spec , u8 protocol_version ) { struct hsr_priv * hsr ; struct hsr_port * port ; int res ; hsr = netdev_priv ( hsr_dev ) ; INIT_LIST_HEAD ( & hsr -> ports ) ; INIT_LIST_HEAD ( & hsr -> node_db ) ; INIT_LIST_HEAD ( & hsr -> self_node_db ) ; ether_addr_copy ( hsr_dev -> dev_addr , slave [ 0 ] -> dev_addr ) ; res = hsr_create_self_node ( & hsr -> self_node_db , hsr_dev -> dev_addr , slave [ 1 ] -> dev_addr ) ; if ( res < 0 ) return res ; spin_lock_init ( & hsr -> seqnr_lock ) ; hsr -> sequence_nr = HSR_SEQNR_START ; hsr -> sup_sequence_nr = HSR_SUP_SEQNR_START ; timer_setup ( & hsr -> announce_timer , hsr_announce , 0 ) ; timer_setup ( & hsr -> prune_timer , hsr_prune_nodes , 0 ) ; ether_addr_copy ( hsr -> sup_multicast_addr , def_multicast_addr ) ; hsr -> sup_multicast_addr [ ETH_ALEN - 1 ] = multicast_spec ; hsr -> protVersion = protocol_version ; netif_carrier_off ( hsr_dev ) ; res = hsr_add_port ( hsr , hsr_dev , HSR_PT_MASTER ) ; if ( res ) <S2SV_StartBug> return res ; <S2SV_EndBug> res = register_netdevice ( hsr_dev ) ; if ( res ) goto fail ; res = hsr_add_port ( hsr , slave [ 0 ] , HSR_PT_SLAVE_A ) ; if ( res ) goto fail ; res = hsr_add_port ( hsr , slave [ 1 ] , HSR_PT_SLAVE_B ) ; if ( res ) goto fail ; mod_timer ( & hsr -> prune_timer , jiffies + msecs_to_jiffies ( PRUNE_PERIOD ) ) ; return 0 ; fail : hsr_for_each_port ( hsr , port ) hsr_del_port ( port ) ; <S2SV_StartBug> return res ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( res ) goto err_add_port <S2SV_ModEnd> ; res = <S2SV_ModStart> port ) ; err_add_port : hsr_del_node ( & hsr -> self_node_db ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void init_encode_frame_mb_context ( VP8_COMP * cpi ) { MACROBLOCK * const x = & cpi -> mb ; VP8_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & x -> e_mbd ; x -> gf_active_ptr = ( signed char * ) cpi -> gf_active_flags ; x -> mb_activity_ptr = cpi -> mb_activity_map ; x -> act_zbin_adj = 0 ; x -> partition_info = x -> pi ; xd -> mode_info_context = cm -> mi ; xd -> mode_info_stride = cm -> mode_info_stride ; xd -> frame_type = cm -> frame_type ; if ( cm -> frame_type == KEY_FRAME ) vp8_init_mbmode_probs ( cm ) ; x -> src = * cpi -> Source ; xd -> pre = cm -> yv12_fb [ cm -> lst_fb_idx ] ; xd -> dst = cm -> yv12_fb [ cm -> new_fb_idx ] ; vp8_setup_intra_recon ( & cm -> yv12_fb [ cm -> new_fb_idx ] ) ; vp8_build_block_offsets ( x ) ; xd -> mode_info_context -> mbmi . mode = DC_PRED ; xd -> mode_info_context -> mbmi . uv_mode = DC_PRED ; xd -> left_context = & cm -> left_context ; x -> mvc = cm -> fc . mvc ; <S2SV_StartBug> vpx_memset ( cm -> above_context , 0 , <S2SV_EndBug> sizeof ( ENTROPY_CONTEXT_PLANES ) * cm -> mb_cols ) ; if ( cpi -> ref_frame_flags == VP8_LAST_FRAME ) vp8_calc_ref_frame_costs ( x -> ref_frame_cost , cpi -> prob_intra_coded , 255 , 128 ) ; else if ( ( cpi -> oxcf . number_of_layers > 1 ) && ( cpi -> ref_frame_flags == VP8_GOLD_FRAME ) ) vp8_calc_ref_frame_costs ( x -> ref_frame_cost , cpi -> prob_intra_coded , 1 , 255 ) ; else if ( ( cpi -> oxcf . number_of_layers > 1 ) && ( cpi -> ref_frame_flags == VP8_ALTR_FRAME ) ) vp8_calc_ref_frame_costs ( x -> ref_frame_cost , cpi -> prob_intra_coded , 1 , 1 ) ; else vp8_calc_ref_frame_costs ( x -> ref_frame_cost , cpi -> prob_intra_coded , cpi -> prob_last_coded , cpi -> prob_gf_coded ) ; xd -> fullpixel_mask = 0xffffffff ; if ( cm -> full_pixel ) xd -> fullpixel_mask = 0xfffffff8 ; vp8_zero ( x -> coef_counts ) ; vp8_zero ( x -> ymode_count ) ; vp8_zero ( x -> uv_mode_count ) x -> prediction_error = 0 ; x -> intra_error = 0 ; vp8_zero ( x -> count_mb_ref_frame_usage ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . mvc ; memset <S2SV_ModEnd> ( cm ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-5327\n\n```\nCWE-119 struct se_portal_group * tcm_loop_make_naa_tpg ( struct se_wwn * wwn , struct config_group * group , const char * name ) { struct tcm_loop_hba * tl_hba = container_of ( wwn , struct tcm_loop_hba , tl_hba_wwn ) ; struct tcm_loop_tpg * tl_tpg ; char * tpgt_str , * end_ptr ; int ret ; unsigned short int tpgt ; tpgt_str = strstr ( name , \"tpgt_\" ) ; if ( ! tpgt_str ) { printk ( KERN_ERR \"Unable<S2SV_blank>to<S2SV_blank>locate<S2SV_blank>\\\\\"tpgt_#\\\\\"<S2SV_blank>directory\" \"<S2SV_blank>group\\\\n\" ) ; return ERR_PTR ( - EINVAL ) ; } tpgt_str += 5 ; tpgt = ( unsigned short int ) simple_strtoul ( tpgt_str , & end_ptr , 0 ) ; <S2SV_StartBug> if ( tpgt > TL_TPGS_PER_HBA ) { <S2SV_EndBug> printk ( KERN_ERR \"Passed<S2SV_blank>tpgt:<S2SV_blank>%hu<S2SV_blank>exceeds<S2SV_blank>TL_TPGS_PER_HBA:\" \"<S2SV_blank>%u\\\\n\" , tpgt , TL_TPGS_PER_HBA ) ; return ERR_PTR ( - EINVAL ) ; } tl_tpg = & tl_hba -> tl_hba_tpgs [ tpgt ] ; tl_tpg -> tl_hba = tl_hba ; tl_tpg -> tl_tpgt = tpgt ; ret = core_tpg_register ( & tcm_loop_fabric_configfs -> tf_ops , wwn , & tl_tpg -> tl_se_tpg , tl_tpg , TRANSPORT_TPG_TYPE_NORMAL ) ; if ( ret < 0 ) return ERR_PTR ( - ENOMEM ) ; printk ( KERN_INFO \"TCM_Loop_ConfigFS:<S2SV_blank>Allocated<S2SV_blank>Emulated<S2SV_blank>%s\" \"<S2SV_blank>Target<S2SV_blank>Port<S2SV_blank>%s,t,0x%04x\\\\n\" , tcm_loop_dump_proto_id ( tl_hba ) , config_item_name ( & wwn -> wwn_group . cg_item ) , tpgt ) ; return & tl_tpg -> tl_se_tpg ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( tpgt >= <S2SV_ModEnd> TL_TPGS_PER_HBA ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static struct bpf_verifier_state * push_stack ( struct bpf_verifier_env * env , <S2SV_StartBug> int insn_idx , int prev_insn_idx ) <S2SV_EndBug> { struct bpf_verifier_state * cur = env -> cur_state ; struct bpf_verifier_stack_elem * elem ; int err ; elem = kzalloc ( sizeof ( struct bpf_verifier_stack_elem ) , GFP_KERNEL ) ; if ( ! elem ) goto err ; elem -> insn_idx = insn_idx ; elem -> prev_insn_idx = prev_insn_idx ; elem -> next = env -> head ; env -> head = elem ; env -> stack_size ++ ; err = copy_verifier_state ( & elem -> st , cur ) ; if ( err ) <S2SV_StartBug> goto err ; <S2SV_EndBug> if ( env -> stack_size > BPF_COMPLEXITY_LIMIT_STACK ) { verbose ( env , \"BPF<S2SV_blank>program<S2SV_blank>is<S2SV_blank>too<S2SV_blank>complex\\\\n\" ) ; goto err ; } return & elem -> st ; err : free_verifier_state ( env -> cur_state , true ) ; env -> cur_state = NULL ; while ( ! pop_stack ( env , NULL , NULL ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int prev_insn_idx , bool speculative <S2SV_ModStart> ) goto err ; elem -> st . speculative |= speculative\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_setup_intra_recon ( YV12_BUFFER_CONFIG * ybf ) { int i ; <S2SV_StartBug> vpx_memset ( ybf -> y_buffer - 1 - ybf -> y_stride , 127 , ybf -> y_width + 5 ) ; <S2SV_EndBug> for ( i = 0 ; i < ybf -> y_height ; i ++ ) ybf -> y_buffer [ ybf -> y_stride * i - 1 ] = ( unsigned char ) 129 ; <S2SV_StartBug> vpx_memset ( ybf -> u_buffer - 1 - ybf -> uv_stride , 127 , ybf -> uv_width + 5 ) ; <S2SV_EndBug> for ( i = 0 ; i < ybf -> uv_height ; i ++ ) ybf -> u_buffer [ ybf -> uv_stride * i - 1 ] = ( unsigned char ) 129 ; <S2SV_StartBug> vpx_memset ( ybf -> v_buffer - 1 - ybf -> uv_stride , 127 , ybf -> uv_width + 5 ) ; <S2SV_EndBug> for ( i = 0 ; i < ybf -> uv_height ; i ++ ) ybf -> v_buffer [ ybf -> uv_stride * i - 1 ] = ( unsigned char ) 129 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; memset <S2SV_ModEnd> ( ybf -> <S2SV_ModStart> ) 129 ; memset <S2SV_ModEnd> ( ybf -> <S2SV_ModStart> ) 129 ; memset <S2SV_ModEnd> ( ybf ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_discover_domain ( struct work_struct * work ) { struct domain_device * dev ; int error = 0 ; struct sas_discovery_event * ev = to_sas_discovery_event ( work ) ; struct asd_sas_port * port = ev -> port ; clear_bit ( DISCE_DISCOVER_DOMAIN , & port -> disc . pending ) ; if ( port -> port_dev ) return ; error = sas_get_port_device ( port ) ; if ( error ) return ; dev = port -> port_dev ; SAS_DPRINTK ( \"DOING<S2SV_blank>DISCOVERY<S2SV_blank>on<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>pid:%d\\\\n\" , port -> id , task_pid_nr ( current ) ) ; switch ( dev -> dev_type ) { case SAS_END_DEVICE : error = sas_discover_end_dev ( dev ) ; break ; case SAS_EDGE_EXPANDER_DEVICE : case SAS_FANOUT_EXPANDER_DEVICE : error = sas_discover_root_expander ( dev ) ; break ; case SAS_SATA_DEV : case SAS_SATA_PM : # ifdef CONFIG_SCSI_SAS_ATA error = sas_discover_sata ( dev ) ; break ; # else SAS_DPRINTK ( \"ATA<S2SV_blank>device<S2SV_blank>seen<S2SV_blank>but<S2SV_blank>CONFIG_SCSI_SAS_ATA=N<S2SV_blank>so<S2SV_blank>cannot<S2SV_blank>attach\\\\n\" ) ; # endif default : error = - ENXIO ; SAS_DPRINTK ( \"unhandled<S2SV_blank>device<S2SV_blank>%d\\\\n\" , dev -> dev_type ) ; break ; } if ( error ) { sas_rphy_free ( dev -> rphy ) ; list_del_init ( & dev -> disco_list_node ) ; spin_lock_irq ( & port -> dev_list_lock ) ; list_del_init ( & dev -> dev_list_node ) ; spin_unlock_irq ( & port -> dev_list_lock ) ; sas_put_device ( dev ) ; port -> port_dev = NULL ; } <S2SV_StartBug> SAS_DPRINTK ( \"DONE<S2SV_blank>DISCOVERY<S2SV_blank>on<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>pid:%d,<S2SV_blank>result:%d\\\\n\" , port -> id , <S2SV_EndBug> task_pid_nr ( current ) , error ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } sas_probe_devices ( port ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5352\n\n```\nCWE-125 static INT AirPDcapDecryptWPABroadcastKey ( const EAPOL_RSN_KEY * pEAPKey , guint8 * decryption_key , PAIRPDCAP_SEC_ASSOCIATION sa , guint eapol_len ) { guint8 key_version ; guint8 * key_data ; guint8 * szEncryptedKey ; guint16 key_bytes_len = 0 ; guint16 key_len ; static AIRPDCAP_KEY_ITEM dummy_key ; AIRPDCAP_SEC_ASSOCIATION * tmp_sa ; key_version = AIRPDCAP_EAP_KEY_DESCR_VER ( pEAPKey -> key_information [ 1 ] ) ; if ( key_version == AIRPDCAP_WPA_KEY_VER_NOT_CCMP ) { key_bytes_len = pntoh16 ( pEAPKey -> key_length ) ; } else if ( key_version == AIRPDCAP_WPA_KEY_VER_AES_CCMP ) { key_bytes_len = pntoh16 ( pEAPKey -> key_data_len ) ; if ( key_bytes_len < 16 ) { return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } } <S2SV_StartBug> if ( key_bytes_len < GROUP_KEY_MIN_LEN || key_bytes_len > eapol_len - sizeof ( EAPOL_RSN_KEY ) ) { <S2SV_EndBug> return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } key_data = ( guint8 * ) pEAPKey + sizeof ( EAPOL_RSN_KEY ) ; szEncryptedKey = ( guint8 * ) g_memdup ( key_data , key_bytes_len ) ; DEBUG_DUMP ( \"Encrypted<S2SV_blank>Broadcast<S2SV_blank>key:\" , szEncryptedKey , key_bytes_len ) ; DEBUG_DUMP ( \"KeyIV:\" , pEAPKey -> key_iv , 16 ) ; DEBUG_DUMP ( \"decryption_key:\" , decryption_key , 16 ) ; tmp_sa = ( AIRPDCAP_SEC_ASSOCIATION * ) g_malloc ( sizeof ( AIRPDCAP_SEC_ASSOCIATION ) ) ; memcpy ( tmp_sa , sa , sizeof ( AIRPDCAP_SEC_ASSOCIATION ) ) ; sa -> next = tmp_sa ; if ( key_version == AIRPDCAP_WPA_KEY_VER_NOT_CCMP ) { guint8 new_key [ 32 ] ; guint8 dummy [ 256 ] ; rc4_state_struct rc4_state ; sa -> wpa . key_ver = ( key_bytes_len >= TKIP_GROUP_KEY_LEN ) ? AIRPDCAP_WPA_KEY_VER_NOT_CCMP : AIRPDCAP_WPA_KEY_VER_AES_CCMP ; memcpy ( new_key , pEAPKey -> key_iv , 16 ) ; memcpy ( new_key + 16 , decryption_key , 16 ) ; DEBUG_DUMP ( \"FullDecrKey:\" , new_key , 32 ) ; crypt_rc4_init ( & rc4_state , new_key , sizeof ( new_key ) ) ; crypt_rc4 ( & rc4_state , dummy , 256 ) ; crypt_rc4 ( & rc4_state , szEncryptedKey , key_bytes_len ) ; } else if ( key_version == AIRPDCAP_WPA_KEY_VER_AES_CCMP ) { guint8 key_found ; guint8 key_length ; guint16 key_index ; guint8 * decrypted_data ; decrypted_data = AES_unwrap ( decryption_key , 16 , szEncryptedKey , key_bytes_len ) ; key_found = FALSE ; key_index = 0 ; while ( key_index < ( key_bytes_len - 6 ) && ! key_found ) { guint8 rsn_id ; guint32 type ; rsn_id = decrypted_data [ key_index ] ; type = ( ( decrypted_data [ key_index + 2 ] << 24 ) + ( decrypted_data [ key_index + 3 ] << 16 ) + ( decrypted_data [ key_index + 4 ] << 8 ) + ( decrypted_data [ key_index + 5 ] ) ) ; if ( rsn_id == 0xdd && type == 0x000fac01 ) { key_found = TRUE ; } else { key_index += decrypted_data [ key_index + 1 ] + 2 ; } } if ( key_found ) { key_length = decrypted_data [ key_index + 1 ] - 6 ; if ( key_index + 8 >= key_bytes_len || key_length > key_bytes_len - key_index - 8 ) { g_free ( decrypted_data ) ; g_free ( szEncryptedKey ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } memcpy ( szEncryptedKey , decrypted_data + key_index + 8 , key_length ) ; } else { g_free ( decrypted_data ) ; g_free ( szEncryptedKey ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } if ( key_length == TKIP_GROUP_KEY_LEN ) sa -> wpa . key_ver = AIRPDCAP_WPA_KEY_VER_NOT_CCMP ; else sa -> wpa . key_ver = AIRPDCAP_WPA_KEY_VER_AES_CCMP ; g_free ( decrypted_data ) ; } key_len = ( sa -> wpa . key_ver == AIRPDCAP_WPA_KEY_VER_NOT_CCMP ) ? TKIP_GROUP_KEY_LEN : CCMP_GROUP_KEY_LEN ; if ( key_len > key_bytes_len ) { g_free ( szEncryptedKey ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } DEBUG_DUMP ( \"Broadcast<S2SV_blank>key:\" , szEncryptedKey , key_len ) ; sa -> key = & dummy_key ; sa -> validKey = TRUE ; memset ( sa -> wpa . ptk , 0 , sizeof ( sa -> wpa . ptk ) ) ; memcpy ( sa -> wpa . ptk + 32 , szEncryptedKey , key_len ) ; g_free ( szEncryptedKey ) ; return AIRPDCAP_RET_SUCCESS_HANDSHAKE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ( <S2SV_ModStart> key_bytes_len < GROUP_KEY_MIN_LEN ) || ( eapol_len < sizeof ( EAPOL_RSN_KEY ) ) || ( <S2SV_ModEnd> key_bytes_len > eapol_len <S2SV_ModStart> sizeof ( EAPOL_RSN_KEY )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6560\n\n```\nCWE-436 static gboolean side_in_cb ( GSocket * socket , GIOCondition condition , gpointer user_data ) { ProxySide * side = user_data ; FlatpakProxyClient * client = side -> client ; GError * error = NULL ; Buffer * buffer ; gboolean retval = G_SOURCE_CONTINUE ; g_object_ref ( client ) ; while ( ! side -> closed ) { if ( ! side -> got_first_byte ) buffer = buffer_new ( 1 , NULL ) ; else if ( ! client -> authenticated ) buffer = buffer_new ( 64 , NULL ) ; else buffer = side -> current_read_buffer ; if ( ! buffer_read ( side , buffer , socket ) ) { if ( buffer != side -> current_read_buffer ) buffer_unref ( buffer ) ; break ; } if ( ! client -> authenticated ) { if ( buffer -> pos > 0 ) { gboolean found_auth_end = FALSE ; gsize extra_data ; buffer -> size = buffer -> pos ; if ( ! side -> got_first_byte ) { buffer -> send_credentials = TRUE ; side -> got_first_byte = TRUE ; } else if ( side == & client -> client_side ) { gssize auth_end = find_auth_end ( client , buffer ) ; if ( auth_end >= 0 ) { found_auth_end = TRUE ; buffer -> size = auth_end ; extra_data = buffer -> pos - buffer -> size ; if ( extra_data > 0 ) side -> extra_input_data = g_bytes_new ( buffer -> data + buffer -> size , extra_data ) ; } <S2SV_StartBug> } <S2SV_EndBug> got_buffer_from_side ( side , buffer ) ; if ( found_auth_end ) client -> authenticated = TRUE ; } else { buffer_unref ( buffer ) ; } } else if ( buffer -> pos == buffer -> size ) { if ( buffer == & side -> header_buffer ) { gssize required ; required = g_dbus_message_bytes_needed ( buffer -> data , buffer -> size , & error ) ; if ( required < 0 ) { g_warning ( \"Invalid<S2SV_blank>message<S2SV_blank>header<S2SV_blank>read\" ) ; side_closed ( side ) ; } else { side -> current_read_buffer = buffer_new ( required , buffer ) ; } } else { got_buffer_from_side ( side , buffer ) ; side -> header_buffer . pos = 0 ; side -> current_read_buffer = & side -> header_buffer ; } } } if ( side -> closed ) { side -> in_source = NULL ; retval = G_SOURCE_REMOVE ; } g_object_unref ( client ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } else if ( auth_end == FIND_AUTH_END_ABORT ) { buffer_unref ( buffer ) ; if ( client -> proxy -> log_messages ) g_print ( \"Invalid<S2SV_blank>AUTH<S2SV_blank>line,<S2SV_blank>aborting\\\\n\" ) ; side_closed ( side ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 int ext2_xattr_get ( struct inode * inode , int name_index , const char * name , void * buffer , size_t buffer_size ) { struct buffer_head * bh = NULL ; struct ext2_xattr_entry * entry ; size_t name_len , size ; char * end ; <S2SV_StartBug> int error ; <S2SV_EndBug> ea_idebug ( inode , \"name=%d.%s,<S2SV_blank>buffer=%p,<S2SV_blank>buffer_size=%ld\" , name_index , name , buffer , ( long ) buffer_size ) ; if ( name == NULL ) return - EINVAL ; name_len = strlen ( name ) ; if ( name_len > 255 ) return - ERANGE ; down_read ( & EXT2_I ( inode ) -> xattr_sem ) ; error = - ENODATA ; if ( ! EXT2_I ( inode ) -> i_file_acl ) goto cleanup ; ea_idebug ( inode , \"reading<S2SV_blank>block<S2SV_blank>%d\" , EXT2_I ( inode ) -> i_file_acl ) ; bh = sb_bread ( inode -> i_sb , EXT2_I ( inode ) -> i_file_acl ) ; error = - EIO ; if ( ! bh ) goto cleanup ; ea_bdebug ( bh , \"b_count=%d,<S2SV_blank>refcount=%d\" , atomic_read ( & ( bh -> b_count ) ) , le32_to_cpu ( HDR ( bh ) -> h_refcount ) ) ; end = bh -> b_data + bh -> b_size ; if ( HDR ( bh ) -> h_magic != cpu_to_le32 ( EXT2_XATTR_MAGIC ) || HDR ( bh ) -> h_blocks != cpu_to_le32 ( 1 ) ) { bad_block : ext2_error ( inode -> i_sb , \"ext2_xattr_get\" , \"inode<S2SV_blank>%ld:<S2SV_blank>bad<S2SV_blank>block<S2SV_blank>%d\" , inode -> i_ino , EXT2_I ( inode ) -> i_file_acl ) ; error = - EIO ; goto cleanup ; } entry = FIRST_ENTRY ( bh ) ; while ( ! IS_LAST_ENTRY ( entry ) ) { struct ext2_xattr_entry * next = EXT2_XATTR_NEXT ( entry ) ; if ( ( char * ) next >= end ) goto bad_block ; if ( name_index == entry -> e_name_index && name_len == entry -> e_name_len && memcmp ( name , entry -> e_name , name_len ) == 0 ) goto found ; entry = next ; } <S2SV_StartBug> if ( ext2_xattr_cache_insert ( bh ) ) <S2SV_EndBug> ea_idebug ( inode , \"cache<S2SV_blank>insert<S2SV_blank>failed\" ) ; error = - ENODATA ; goto cleanup ; found : if ( entry -> e_value_block != 0 ) goto bad_block ; size = le32_to_cpu ( entry -> e_value_size ) ; if ( size > inode -> i_sb -> s_blocksize || le16_to_cpu ( entry -> e_value_offs ) + size > inode -> i_sb -> s_blocksize ) goto bad_block ; <S2SV_StartBug> if ( ext2_xattr_cache_insert ( bh ) ) <S2SV_EndBug> ea_idebug ( inode , \"cache<S2SV_blank>insert<S2SV_blank>failed\" ) ; if ( buffer ) { error = - ERANGE ; if ( size > buffer_size ) goto cleanup ; memcpy ( buffer , bh -> b_data + le16_to_cpu ( entry -> e_value_offs ) , size ) ; } error = size ; cleanup : brelse ( bh ) ; up_read ( & EXT2_I ( inode ) -> xattr_sem ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int error ; struct mb2_cache * ext2_mb_cache = EXT2_SB ( inode -> i_sb ) -> s_mb_cache <S2SV_ModStart> ( ext2_xattr_cache_insert ( ext2_mb_cache , <S2SV_ModStart> ( ext2_xattr_cache_insert ( ext2_mb_cache ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7866\n\n```\nCWE-787 static int decode_zbuf ( AVBPrint * bp , const uint8_t * data , const uint8_t * data_end ) { z_stream zstream ; unsigned char * buf ; unsigned buf_size ; int ret ; zstream . zalloc = ff_png_zalloc ; zstream . zfree = ff_png_zfree ; zstream . opaque = NULL ; if ( inflateInit ( & zstream ) != Z_OK ) return AVERROR_EXTERNAL ; zstream . next_in = ( unsigned char * ) data ; zstream . avail_in = data_end - data ; av_bprint_init ( bp , 0 , - 1 ) ; while ( zstream . avail_in > 0 ) { <S2SV_StartBug> av_bprint_get_buffer ( bp , 1 , & buf , & buf_size ) ; <S2SV_EndBug> if ( ! buf_size ) { ret = AVERROR ( ENOMEM ) ; goto fail ; } zstream . next_out = buf ; <S2SV_StartBug> zstream . avail_out = buf_size ; <S2SV_EndBug> ret = inflate ( & zstream , Z_PARTIAL_FLUSH ) ; if ( ret != Z_OK && ret != Z_STREAM_END ) { ret = AVERROR_EXTERNAL ; goto fail ; } bp -> len += zstream . next_out - buf ; if ( ret == Z_STREAM_END ) break ; } inflateEnd ( & zstream ) ; bp -> str [ bp -> len ] = 0 ; return 0 ; fail : inflateEnd ( & zstream ) ; av_bprint_finalize ( bp , NULL ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( bp , 2 , & buf , & buf_size ) ; if ( buf_size < 2 <S2SV_ModEnd> ) { ret <S2SV_ModStart> avail_out = buf_size - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11810\n\n```\nCWE-476 int megasas_alloc_cmds ( struct megasas_instance * instance ) { int i ; int j ; u16 max_cmd ; struct megasas_cmd * cmd ; max_cmd = instance -> max_mfi_cmds ; instance -> cmd_list = kcalloc ( max_cmd , sizeof ( struct megasas_cmd * ) , GFP_KERNEL ) ; if ( ! instance -> cmd_list ) { dev_printk ( KERN_DEBUG , & instance -> pdev -> dev , \"out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; return - ENOMEM ; } memset ( instance -> cmd_list , 0 , sizeof ( struct megasas_cmd * ) * max_cmd ) ; for ( i = 0 ; i < max_cmd ; i ++ ) { instance -> cmd_list [ i ] = kmalloc ( sizeof ( struct megasas_cmd ) , GFP_KERNEL ) ; if ( ! instance -> cmd_list [ i ] ) { for ( j = 0 ; j < i ; j ++ ) kfree ( instance -> cmd_list [ j ] ) ; kfree ( instance -> cmd_list ) ; instance -> cmd_list = NULL ; return - ENOMEM ; } } for ( i = 0 ; i < max_cmd ; i ++ ) { cmd = instance -> cmd_list [ i ] ; memset ( cmd , 0 , sizeof ( struct megasas_cmd ) ) ; cmd -> index = i ; cmd -> scmd = NULL ; cmd -> instance = instance ; list_add_tail ( & cmd -> list , & instance -> cmd_pool ) ; } if ( megasas_create_frame_pool ( instance ) ) { dev_printk ( KERN_DEBUG , & instance -> pdev -> dev , \"Error<S2SV_blank>creating<S2SV_blank>frame<S2SV_blank>DMA<S2SV_blank>pool\\\\n\" ) ; megasas_free_cmds ( instance ) ; <S2SV_StartBug> } <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> instance ) ; return - ENOMEM ; } return <S2SV_ModEnd> 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1870\n\n```\nCWE-200 static unsigned create_oops_dump_dirs ( GList * oops_list , unsigned oops_cnt ) { unsigned countdown = MAX_DUMPED_DD_COUNT ; log_notice ( \"Saving<S2SV_blank>%u<S2SV_blank>oopses<S2SV_blank>as<S2SV_blank>problem<S2SV_blank>dirs\" , oops_cnt >= countdown ? countdown : oops_cnt ) ; char * cmdline_str = xmalloc_fopen_fgetline_fclose ( \"/proc/cmdline\" ) ; char * fips_enabled = xmalloc_fopen_fgetline_fclose ( \"/proc/sys/crypto/fips_enabled\" ) ; char * proc_modules = xmalloc_open_read_close ( \"/proc/modules\" , NULL ) ; char * suspend_stats = xmalloc_open_read_close ( \"/sys/kernel/debug/suspend_stats\" , NULL ) ; time_t t = time ( NULL ) ; const char * iso_date = iso_date_string ( & t ) ; uid_t my_euid = ( uid_t ) - 1L ; mode_t mode = DEFAULT_DUMP_DIR_MODE | S_IROTH ; if ( ! world_readable_dump ) { mode = DEFAULT_DUMP_DIR_MODE ; my_euid = geteuid ( ) ; } <S2SV_StartBug> pid_t my_pid = getpid ( ) ; <S2SV_EndBug> unsigned idx = 0 ; unsigned errors = 0 ; while ( idx < oops_cnt ) { char base [ sizeof ( \"oops-YYYY-MM-DD-hh:mm:ss-%lu-%lu\" ) + 2 * sizeof ( long ) * 3 ] ; sprintf ( base , \"oops-%s-%lu-%lu\" , iso_date , ( long ) my_pid , ( long ) idx ) ; char * path = concat_path_file ( debug_dumps_dir , base ) ; struct dump_dir * dd = dd_create ( path , my_euid , mode ) ; if ( dd ) { dd_create_basic_files ( dd , my_euid , NULL ) ; save_oops_data_in_dump_dir ( dd , ( char * ) g_list_nth_data ( oops_list , idx ++ ) , proc_modules ) ; dd_save_text ( dd , FILENAME_ABRT_VERSION , VERSION ) ; dd_save_text ( dd , FILENAME_ANALYZER , \"Kerneloops\" ) ; dd_save_text ( dd , FILENAME_TYPE , \"Kerneloops\" ) ; if ( cmdline_str ) dd_save_text ( dd , FILENAME_CMDLINE , cmdline_str ) ; if ( proc_modules ) dd_save_text ( dd , \"proc_modules\" , proc_modules ) ; if ( fips_enabled && strcmp ( fips_enabled , \"0\" ) != 0 ) dd_save_text ( dd , \"fips_enabled\" , fips_enabled ) ; if ( suspend_stats ) dd_save_text ( dd , \"suspend_stats\" , suspend_stats ) ; dd_close ( dd ) ; notify_new_path ( path ) ; } else errors ++ ; free ( path ) ; if ( -- countdown == 0 ) break ; if ( dd && throttle_dd_creation ) sleep ( 1 ) ; } free ( cmdline_str ) ; free ( proc_modules ) ; free ( fips_enabled ) ; free ( suspend_stats ) ; return errors ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( g_settings_privatereports ) { if ( world_readable_dump ) log ( \"Not<S2SV_blank>going<S2SV_blank>to<S2SV_blank>make<S2SV_blank>dump<S2SV_blank>directories<S2SV_blank>world<S2SV_blank>readable<S2SV_blank>because<S2SV_blank>PrivateReports<S2SV_blank>is<S2SV_blank>on\" ) ; mode = DEFAULT_DUMP_DIR_MODE ; my_euid = 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 void vrrp_print_stats ( void ) { <S2SV_StartBug> FILE * file ; <S2SV_EndBug> <S2SV_StartBug> file = fopen ( stats_file , \"w\" ) ; <S2SV_EndBug> if ( ! file ) { log_message ( LOG_INFO , \"Can\\'t<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>(%d:<S2SV_blank>%s)\" , stats_file , errno , strerror ( errno ) ) ; return ; } list l = vrrp_data -> vrrp ; element e ; vrrp_t * vrrp ; <S2SV_StartBug> for ( e = LIST_HEAD ( l ) ; e ; ELEMENT_NEXT ( e ) ) { <S2SV_EndBug> vrrp = ELEMENT_DATA ( e ) ; fprintf ( file , \"VRRP<S2SV_blank>Instance:<S2SV_blank>%s\\\\n\" , vrrp -> iname ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Advertisements:\\\\n\" ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Received:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> advert_rcvd ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sent:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> advert_sent ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Became<S2SV_blank>master:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> become_master ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Released<S2SV_blank>master:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> release_master ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Packet<S2SV_blank>Errors:\\\\n\" ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Length:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> packet_len_err ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>TTL:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> ip_ttl_err ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Invalid<S2SV_blank>Type:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> invalid_type_rcvd ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Advertisement<S2SV_blank>Interval:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> advert_interval_err ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Address<S2SV_blank>List:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> addr_list_err ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Authentication<S2SV_blank>Errors:\\\\n\" ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Invalid<S2SV_blank>Type:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> invalid_authtype ) ; # ifdef _WITH_VRRP_AUTH_ fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Type<S2SV_blank>Mismatch:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> authtype_mismatch ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Failure:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> auth_failure ) ; # endif fprintf ( file , \"<S2SV_blank><S2SV_blank>Priority<S2SV_blank>Zero:\\\\n\" ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Received:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> pri_zero_rcvd ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sent:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> pri_zero_sent ) ; } fclose ( file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FILE * file = fopen_safe <S2SV_ModEnd> ( stats_file , <S2SV_ModStart> , \"w\" ) <S2SV_ModEnd> ; element e <S2SV_ModStart> * vrrp ; if ( ! file ) { log_message ( LOG_INFO , \"Can\\'t<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>(%d:<S2SV_blank>%s)\" , stats_file , errno , strerror ( errno ) ) ; return ; } LIST_FOREACH ( vrrp_data -> vrrp , vrrp , e ) { <S2SV_ModEnd> fprintf ( file\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16359\n\n```\nCWE-476 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( shdr -> sh_size < 1 || shdr -> sh_size > SIZE_MAX ) { return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; for ( cnt = 0 , i = 0 ; i >= 0 && cnt < shdr -> sh_info && ( end - ( char * ) defs > i ) ; ++ cnt ) { Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; char key [ 32 ] = { 0 } ; Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) int vdaux = verdef -> vd_aux ; <S2SV_StartBug> if ( vdaux < 1 || ( char * ) UINTPTR_MAX - vstart < vdaux ) { <S2SV_EndBug> sdb_free ( sdb_verdef ) ; goto out_error ; } vstart += vdaux ; if ( vstart > end || end - vstart < sizeof ( Elf_ ( Verdaux ) ) ) { sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; if ( vstart > end || end - vstart < sizeof ( Elf_ ( Verdaux ) ) ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; } i += verdef -> vd_next ; } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 1 || vstart + vdaux < vstart <S2SV_ModEnd> ) { sdb_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13043\n\n```\nCWE-125 static int decode_multicast_vpn ( netdissect_options * ndo , const u_char * pptr , char * buf , u_int buflen ) { uint8_t route_type , route_length , addr_length , sg_length ; u_int offset ; ND_TCHECK2 ( pptr [ 0 ] , 2 ) ; route_type = * pptr ++ ; route_length = * pptr ++ ; snprintf ( buf , buflen , \"Route-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_multicast_vpn_route_type_values , \"Unknown\" , route_type ) , route_type , route_length ) ; switch ( route_type ) { case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI : ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s,<S2SV_blank>Originator<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) , bgp_vpn_ip_print ( ndo , pptr + BGP_VPN_RD_LEN , ( route_length - BGP_VPN_RD_LEN ) << 3 ) ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI : ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN + 4 ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s,<S2SV_blank>Source-AS<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( pptr + BGP_VPN_RD_LEN ) ) ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI : ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) ) ; pptr += BGP_VPN_RD_LEN ; sg_length = bgp_vpn_sg_print ( ndo , pptr , buf , buflen ) ; addr_length = route_length - sg_length ; ND_TCHECK2 ( pptr [ 0 ] , addr_length ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>Originator<S2SV_blank>%s\" , bgp_vpn_ip_print ( ndo , pptr , addr_length << 3 ) ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE : ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) ) ; pptr += BGP_VPN_RD_LEN ; bgp_vpn_sg_print ( ndo , pptr , buf , buflen ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN : case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN : <S2SV_StartBug> ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN ) ; <S2SV_EndBug> offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s,<S2SV_blank>Source-AS<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( pptr + BGP_VPN_RD_LEN ) ) ) ; <S2SV_StartBug> pptr += BGP_VPN_RD_LEN ; <S2SV_EndBug> bgp_vpn_sg_print ( ndo , pptr , buf , buflen ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_SEG_LEAF : default : break ; } return route_length + 2 ; trunc : return - 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] , BGP_VPN_RD_LEN + 4 <S2SV_ModStart> pptr += BGP_VPN_RD_LEN + 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3227\n\n```\nCWE-200 static int caif_seqpkt_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sk_buff * skb ; int ret ; int copylen ; ret = - EOPNOTSUPP ; if ( m -> msg_flags & MSG_OOB ) goto read_error ; <S2SV_StartBug> skb = skb_recv_datagram ( sk , flags , 0 , & ret ) ; <S2SV_EndBug> if ( ! skb ) goto read_error ; copylen = skb -> len ; if ( len < copylen ) { m -> msg_flags |= MSG_TRUNC ; copylen = len ; } ret = skb_copy_datagram_iovec ( skb , 0 , m -> msg_iov , copylen ) ; if ( ret ) goto out_free ; ret = ( flags & MSG_TRUNC ) ? skb -> len : copylen ; out_free : skb_free_datagram ( sk , skb ) ; caif_check_flow_release ( sk ) ; return ret ; read_error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto read_error ; m -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16643\n\n```\nCWE-125 static void parse_hid_report_descriptor ( struct gtco * device , char * report , int length ) { struct device * ddev = & device -> intf -> dev ; int x , i = 0 ; __u8 prefix ; __u8 size ; __u8 tag ; __u8 type ; __u8 data = 0 ; __u16 data16 = 0 ; __u32 data32 = 0 ; int inputnum = 0 ; __u32 usage = 0 ; __u32 globalval [ TAG_GLOB_MAX ] ; __u32 oldval [ TAG_GLOB_MAX ] ; char maintype = 'x' ; char globtype [ 12 ] ; int indent = 0 ; char indentstr [ 10 ] = \"\" ; dev_dbg ( ddev , \"======>>>>>>PARSE<<<<<<======\\\\n\" ) ; while ( i < length ) { <S2SV_StartBug> prefix = report [ i ] ; <S2SV_EndBug> i ++ ; size = PREF_SIZE ( prefix ) ; switch ( size ) { case 1 : data = report [ i ] ; break ; case 2 : data16 = get_unaligned_le16 ( & report [ i ] ) ; break ; <S2SV_StartBug> case 3 : <S2SV_EndBug> size = 4 ; data32 = get_unaligned_le32 ( & report [ i ] ) ; break ; } i += size ; tag = PREF_TAG ( prefix ) ; type = PREF_TYPE ( prefix ) ; switch ( type ) { case TYPE_MAIN : strcpy ( globtype , \"\" ) ; switch ( tag ) { case TAG_MAIN_INPUT : maintype = 'I' ; if ( data == 2 ) strcpy ( globtype , \"Variable\" ) ; else if ( data == 3 ) strcpy ( globtype , \"Var|Const\" ) ; dev_dbg ( ddev , \":::::<S2SV_blank>Saving<S2SV_blank>Report:<S2SV_blank>%d<S2SV_blank>input<S2SV_blank>#%d<S2SV_blank>Max:<S2SV_blank>0x%X(%d)<S2SV_blank>Min:0x%X(%d)<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bits\\\\n\" , globalval [ TAG_GLOB_REPORT_ID ] , inputnum , globalval [ TAG_GLOB_LOG_MAX ] , globalval [ TAG_GLOB_LOG_MAX ] , globalval [ TAG_GLOB_LOG_MIN ] , globalval [ TAG_GLOB_LOG_MIN ] , globalval [ TAG_GLOB_REPORT_SZ ] * globalval [ TAG_GLOB_REPORT_CNT ] ) ; switch ( inputnum ) { case 0 : dev_dbg ( ddev , \"GER:<S2SV_blank>X<S2SV_blank>Usage:<S2SV_blank>0x%x\\\\n\" , usage ) ; if ( device -> max_X == 0 ) { device -> max_X = globalval [ TAG_GLOB_LOG_MAX ] ; device -> min_X = globalval [ TAG_GLOB_LOG_MIN ] ; } break ; case 1 : dev_dbg ( ddev , \"GER:<S2SV_blank>Y<S2SV_blank>Usage:<S2SV_blank>0x%x\\\\n\" , usage ) ; if ( device -> max_Y == 0 ) { device -> max_Y = globalval [ TAG_GLOB_LOG_MAX ] ; device -> min_Y = globalval [ TAG_GLOB_LOG_MIN ] ; } break ; default : if ( usage == DIGITIZER_USAGE_TILT_X ) { if ( device -> maxtilt_X == 0 ) { device -> maxtilt_X = globalval [ TAG_GLOB_LOG_MAX ] ; device -> mintilt_X = globalval [ TAG_GLOB_LOG_MIN ] ; } } if ( usage == DIGITIZER_USAGE_TILT_Y ) { if ( device -> maxtilt_Y == 0 ) { device -> maxtilt_Y = globalval [ TAG_GLOB_LOG_MAX ] ; device -> mintilt_Y = globalval [ TAG_GLOB_LOG_MIN ] ; } } if ( usage == DIGITIZER_USAGE_TIP_PRESSURE ) { if ( device -> maxpressure == 0 ) { device -> maxpressure = globalval [ TAG_GLOB_LOG_MAX ] ; device -> minpressure = globalval [ TAG_GLOB_LOG_MIN ] ; } } break ; } inputnum ++ ; break ; case TAG_MAIN_OUTPUT : maintype = 'O' ; break ; case TAG_MAIN_FEATURE : maintype = 'F' ; break ; case TAG_MAIN_COL_START : maintype = 'S' ; if ( data == 0 ) { dev_dbg ( ddev , \"======>>>>>><S2SV_blank>Physical\\\\n\" ) ; strcpy ( globtype , \"Physical\" ) ; } else dev_dbg ( ddev , \"======>>>>>>\\\\n\" ) ; indent ++ ; for ( x = 0 ; x < indent ; x ++ ) indentstr [ x ] = '-' ; indentstr [ x ] = 0 ; for ( x = 0 ; x < TAG_GLOB_MAX ; x ++ ) oldval [ x ] = globalval [ x ] ; break ; case TAG_MAIN_COL_END : dev_dbg ( ddev , \"<<<<<<======\\\\n\" ) ; maintype = 'E' ; indent -- ; for ( x = 0 ; x < indent ; x ++ ) indentstr [ x ] = '-' ; indentstr [ x ] = 0 ; for ( x = 0 ; x < TAG_GLOB_MAX ; x ++ ) globalval [ x ] = oldval [ x ] ; break ; } switch ( size ) { case 1 : dev_dbg ( ddev , \"%sMAINTAG:(%d)<S2SV_blank>%c<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>%s<S2SV_blank>0x%x\\\\n\" , indentstr , tag , maintype , size , globtype , data ) ; break ; case 2 : dev_dbg ( ddev , \"%sMAINTAG:(%d)<S2SV_blank>%c<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>%s<S2SV_blank>0x%x\\\\n\" , indentstr , tag , maintype , size , globtype , data16 ) ; break ; case 4 : dev_dbg ( ddev , \"%sMAINTAG:(%d)<S2SV_blank>%c<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>%s<S2SV_blank>0x%x\\\\n\" , indentstr , tag , maintype , size , globtype , data32 ) ; break ; } break ; case TYPE_GLOBAL : switch ( tag ) { case TAG_GLOB_USAGE : if ( device -> usage == 0 ) device -> usage = data ; strcpy ( globtype , \"USAGE\" ) ; break ; case TAG_GLOB_LOG_MIN : strcpy ( globtype , \"LOG_MIN\" ) ; break ; case TAG_GLOB_LOG_MAX : strcpy ( globtype , \"LOG_MAX\" ) ; break ; case TAG_GLOB_PHYS_MIN : strcpy ( globtype , \"PHYS_MIN\" ) ; break ; case TAG_GLOB_PHYS_MAX : strcpy ( globtype , \"PHYS_MAX\" ) ; break ; case TAG_GLOB_UNIT_EXP : strcpy ( globtype , \"EXP\" ) ; break ; case TAG_GLOB_UNIT : strcpy ( globtype , \"UNIT\" ) ; break ; case TAG_GLOB_REPORT_SZ : strcpy ( globtype , \"REPORT_SZ\" ) ; break ; case TAG_GLOB_REPORT_ID : strcpy ( globtype , \"REPORT_ID\" ) ; inputnum = 0 ; break ; case TAG_GLOB_REPORT_CNT : strcpy ( globtype , \"REPORT_CNT\" ) ; break ; case TAG_GLOB_PUSH : strcpy ( globtype , \"PUSH\" ) ; break ; case TAG_GLOB_POP : strcpy ( globtype , \"POP\" ) ; break ; } if ( tag < TAG_GLOB_MAX ) { switch ( size ) { case 1 : dev_dbg ( ddev , \"%sGLOBALTAG:%s(%d)<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , globtype , tag , size , data ) ; globalval [ tag ] = data ; break ; case 2 : dev_dbg ( ddev , \"%sGLOBALTAG:%s(%d)<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , globtype , tag , size , data16 ) ; globalval [ tag ] = data16 ; break ; case 4 : dev_dbg ( ddev , \"%sGLOBALTAG:%s(%d)<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , globtype , tag , size , data32 ) ; globalval [ tag ] = data32 ; break ; } } else { dev_dbg ( ddev , \"%sGLOBALTAG:<S2SV_blank>ILLEGAL<S2SV_blank>TAG:%d<S2SV_blank>SIZE:<S2SV_blank>%d\\\\n\" , indentstr , tag , size ) ; } break ; case TYPE_LOCAL : switch ( tag ) { case TAG_GLOB_USAGE : strcpy ( globtype , \"USAGE\" ) ; usage = data ; break ; case TAG_GLOB_LOG_MIN : strcpy ( globtype , \"MIN\" ) ; break ; case TAG_GLOB_LOG_MAX : strcpy ( globtype , \"MAX\" ) ; break ; default : strcpy ( globtype , \"UNKNOWN\" ) ; break ; } switch ( size ) { case 1 : dev_dbg ( ddev , \"%sLOCALTAG:(%d)<S2SV_blank>%s<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , tag , globtype , size , data ) ; break ; case 2 : dev_dbg ( ddev , \"%sLOCALTAG:(%d)<S2SV_blank>%s<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , tag , globtype , size , data16 ) ; break ; case 4 : dev_dbg ( ddev , \"%sLOCALTAG:(%d)<S2SV_blank>%s<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , tag , globtype , size , data32 ) ; break ; } break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> report [ i ++ ] ; size = ( 1U << PREF_SIZE ( prefix ) ) >> 1 ; if ( i + size > length ) { dev_err ( ddev , \"Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>(need<S2SV_blank>%d,<S2SV_blank>have<S2SV_blank>%d)\\\\n\" , i + size , length ) ; break ; } <S2SV_ModEnd> switch ( size <S2SV_ModStart> break ; case 4 : <S2SV_ModEnd> data32 = get_unaligned_le32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 int jas_stream_write ( jas_stream_t * stream , const void * buf , int cnt ) { int n ; <S2SV_StartBug> const char * bufptr ; <S2SV_EndBug> bufptr = buf ; n = 0 ; while ( n < cnt ) { if ( jas_stream_putc ( stream , * bufptr ) == EOF ) { return n ; } ++ bufptr ; ++ n ; } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * bufptr ; if ( cnt < 0 ) { jas_deprecated ( \"negative<S2SV_blank>count<S2SV_blank>for<S2SV_blank>jas_stream_write\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19645\n\n```\nCWE-674 static int renameUnmapSelectCb ( Walker * pWalker , Select * p ) { Parse * pParse = pWalker -> pParse ; int i ; if ( pParse -> nErr ) return WRC_Abort ; <S2SV_StartBug> if ( ALWAYS ( p -> pEList ) ) { <S2SV_EndBug> ExprList * pList = p -> pEList ; for ( i = 0 ; i < pList -> nExpr ; i ++ ) { if ( pList -> a [ i ] . zName ) { sqlite3RenameTokenRemap ( pParse , 0 , ( void * ) pList -> a [ i ] . zName ) ; } } } if ( ALWAYS ( p -> pSrc ) ) { SrcList * pSrc = p -> pSrc ; for ( i = 0 ; i < pSrc -> nSrc ; i ++ ) { sqlite3RenameTokenRemap ( pParse , 0 , ( void * ) pSrc -> a [ i ] . zName ) ; } } renameWalkWith ( pWalker , p ) ; return WRC_Continue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( p -> selFlags & SF_View ) return WRC_Prune ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int uhid_write ( int fd , const struct uhid_event * ev ) { <S2SV_StartBug> ssize_t ret = write ( fd , ev , sizeof ( * ev ) ) ; <S2SV_EndBug> if ( ret < 0 ) { int rtn = - errno ; APPL_TRACE_ERROR ( \"%s:<S2SV_blank>Cannot<S2SV_blank>write<S2SV_blank>to<S2SV_blank>uhid:%s\" , __FUNCTION__ , strerror ( errno ) ) ; return rtn ; } else if ( ret != ( ssize_t ) sizeof ( * ev ) ) { APPL_TRACE_ERROR ( \"%s:<S2SV_blank>Wrong<S2SV_blank>size<S2SV_blank>written<S2SV_blank>to<S2SV_blank>uhid:<S2SV_blank>%zd<S2SV_blank>!=<S2SV_blank>%zu\" , __FUNCTION__ , ret , sizeof ( * ev ) ) ; return - EFAULT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ssize_t ret = TEMP_FAILURE_RETRY ( <S2SV_ModStart> ( * ev )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15863\n\n```\nCWE-476 static bool ResolveStateAndPredicate ( ExprDef * expr , enum xkb_match_operation * pred_rtrn , xkb_mod_mask_t * mods_rtrn , CompatInfo * info ) { if ( expr == NULL ) { * pred_rtrn = MATCH_ANY_OR_NONE ; * mods_rtrn = MOD_REAL_MASK_ALL ; return true ; } * pred_rtrn = MATCH_EXACTLY ; if ( expr -> expr . op == EXPR_ACTION_DECL ) { const char * pred_txt = xkb_atom_text ( info -> ctx , expr -> action . name ) ; <S2SV_StartBug> if ( ! LookupString ( symInterpretMatchMaskNames , pred_txt , pred_rtrn ) ) { <S2SV_EndBug> log_err ( info -> ctx , \"Illegal<S2SV_blank>modifier<S2SV_blank>predicate<S2SV_blank>\\\\\"%s\\\\\";<S2SV_blank>Ignored\\\\n\" , pred_txt ) ; return false ; } expr = expr -> action . args ; } else if ( expr -> expr . op == EXPR_IDENT ) { const char * pred_txt = xkb_atom_text ( info -> ctx , expr -> ident . ident ) ; if ( pred_txt && istreq ( pred_txt , \"any\" ) ) { * pred_rtrn = MATCH_ANY ; * mods_rtrn = MOD_REAL_MASK_ALL ; return true ; } } return ExprResolveModMask ( info -> ctx , expr , MOD_REAL , & info -> mods , mods_rtrn ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , pred_rtrn ) || ! expr -> action . args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1773\n\n```\nCWE-119 static void kvp_respond_to_host ( char * key , char * value , int error ) { struct hv_kvp_msg * kvp_msg ; struct hv_kvp_msg_enumerate * kvp_data ; char * key_name ; struct icmsg_hdr * icmsghdrp ; int keylen , valuelen ; u32 buf_len ; struct vmbus_channel * channel ; u64 req_id ; if ( ! kvp_transaction . active ) { pr_warn ( \"KVP:<S2SV_blank>Transaction<S2SV_blank>not<S2SV_blank>active\\\\n\" ) ; return ; } buf_len = kvp_transaction . recv_len ; channel = kvp_transaction . recv_channel ; req_id = kvp_transaction . recv_req_id ; kvp_transaction . active = false ; if ( channel -> onchannel_callback == NULL ) return ; icmsghdrp = ( struct icmsg_hdr * ) & recv_buffer [ sizeof ( struct vmbuspipe_hdr ) ] ; kvp_msg = ( struct hv_kvp_msg * ) & recv_buffer [ sizeof ( struct vmbuspipe_hdr ) + sizeof ( struct icmsg_hdr ) ] ; kvp_data = & kvp_msg -> kvp_data ; key_name = key ; if ( error ) { icmsghdrp -> status = HV_E_FAIL ; goto response_done ; } <S2SV_StartBug> keylen = utf8s_to_utf16s ( key_name , strlen ( key_name ) , <S2SV_EndBug> <S2SV_StartBug> ( wchar_t * ) kvp_data -> data . key ) ; <S2SV_EndBug> kvp_data -> data . key_size = 2 * ( keylen + 1 ) ; <S2SV_StartBug> valuelen = utf8s_to_utf16s ( value , strlen ( value ) , <S2SV_EndBug> <S2SV_StartBug> ( wchar_t * ) kvp_data -> data . value ) ; <S2SV_EndBug> kvp_data -> data . value_size = 2 * ( valuelen + 1 ) ; kvp_data -> data . value_type = REG_SZ ; icmsghdrp -> status = HV_S_OK ; response_done : icmsghdrp -> icflags = ICMSGHDRFLAG_TRANSACTION | ICMSGHDRFLAG_RESPONSE ; vmbus_sendpacket ( channel , recv_buffer , buf_len , req_id , VM_PKT_DATA_INBAND , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> key_name ) , UTF16_HOST_ENDIAN , <S2SV_ModStart> data . key , HV_KVP_EXCHANGE_MAX_KEY_SIZE / 2 <S2SV_ModStart> value ) , UTF16_HOST_ENDIAN , <S2SV_ModStart> data . value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE / 2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0217\n\n```\nCWE-399 static void xen_netbk_fill_frags ( struct xen_netbk * netbk , struct sk_buff * skb ) { struct skb_shared_info * shinfo = skb_shinfo ( skb ) ; int nr_frags = shinfo -> nr_frags ; int i ; for ( i = 0 ; i < nr_frags ; i ++ ) { skb_frag_t * frag = shinfo -> frags + i ; struct xen_netif_tx_request * txp ; struct page * page ; u16 pending_idx ; pending_idx = frag_get_pending_idx ( frag ) ; txp = & netbk -> pending_tx_info [ pending_idx ] . req ; page = virt_to_page ( idx_to_kaddr ( netbk , pending_idx ) ) ; __skb_fill_page_desc ( skb , i , page , txp -> offset , txp -> size ) ; skb -> len += txp -> size ; skb -> data_len += txp -> size ; skb -> truesize += txp -> size ; get_page ( netbk -> mmap_pages [ pending_idx ] ) ; <S2SV_StartBug> xen_netbk_idx_release ( netbk , pending_idx ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> netbk , pending_idx , XEN_NETIF_RSP_OKAY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2384\n\n```\nCWE-000 int snd_usbmidi_create ( struct snd_card * card , struct usb_interface * iface , struct list_head * midi_list , const struct snd_usb_audio_quirk * quirk ) { struct snd_usb_midi * umidi ; struct snd_usb_midi_endpoint_info endpoints [ MIDI_MAX_ENDPOINTS ] ; int out_ports , in_ports ; int i , err ; umidi = kzalloc ( sizeof ( * umidi ) , GFP_KERNEL ) ; if ( ! umidi ) return - ENOMEM ; umidi -> dev = interface_to_usbdev ( iface ) ; umidi -> card = card ; umidi -> iface = iface ; umidi -> quirk = quirk ; umidi -> usb_protocol_ops = & snd_usbmidi_standard_ops ; spin_lock_init ( & umidi -> disc_lock ) ; init_rwsem ( & umidi -> disc_rwsem ) ; mutex_init ( & umidi -> mutex ) ; umidi -> usb_id = USB_ID ( le16_to_cpu ( umidi -> dev -> descriptor . idVendor ) , le16_to_cpu ( umidi -> dev -> descriptor . idProduct ) ) ; setup_timer ( & umidi -> error_timer , snd_usbmidi_error_timer , ( unsigned long ) umidi ) ; memset ( endpoints , 0 , sizeof ( endpoints ) ) ; switch ( quirk ? quirk -> type : QUIRK_MIDI_STANDARD_INTERFACE ) { case QUIRK_MIDI_STANDARD_INTERFACE : err = snd_usbmidi_get_ms_info ( umidi , endpoints ) ; if ( umidi -> usb_id == USB_ID ( 0x0763 , 0x0150 ) ) umidi -> usb_protocol_ops = & snd_usbmidi_maudio_broken_running_status_ops ; break ; case QUIRK_MIDI_US122L : umidi -> usb_protocol_ops = & snd_usbmidi_122l_ops ; case QUIRK_MIDI_FIXED_ENDPOINT : memcpy ( & endpoints [ 0 ] , quirk -> data , sizeof ( struct snd_usb_midi_endpoint_info ) ) ; err = snd_usbmidi_detect_endpoints ( umidi , & endpoints [ 0 ] , 1 ) ; break ; case QUIRK_MIDI_YAMAHA : err = snd_usbmidi_detect_yamaha ( umidi , & endpoints [ 0 ] ) ; break ; case QUIRK_MIDI_ROLAND : err = snd_usbmidi_detect_roland ( umidi , & endpoints [ 0 ] ) ; break ; case QUIRK_MIDI_MIDIMAN : umidi -> usb_protocol_ops = & snd_usbmidi_midiman_ops ; memcpy ( & endpoints [ 0 ] , quirk -> data , sizeof ( struct snd_usb_midi_endpoint_info ) ) ; err = 0 ; break ; case QUIRK_MIDI_NOVATION : umidi -> usb_protocol_ops = & snd_usbmidi_novation_ops ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; case QUIRK_MIDI_RAW_BYTES : umidi -> usb_protocol_ops = & snd_usbmidi_raw_ops ; if ( umidi -> usb_id == USB_ID ( 0x07fd , 0x0001 ) ) usb_set_interface ( umidi -> dev , 0 , 0 ) ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; case QUIRK_MIDI_EMAGIC : umidi -> usb_protocol_ops = & snd_usbmidi_emagic_ops ; memcpy ( & endpoints [ 0 ] , quirk -> data , sizeof ( struct snd_usb_midi_endpoint_info ) ) ; err = snd_usbmidi_detect_endpoints ( umidi , & endpoints [ 0 ] , 1 ) ; break ; case QUIRK_MIDI_CME : umidi -> usb_protocol_ops = & snd_usbmidi_cme_ops ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; case QUIRK_MIDI_AKAI : umidi -> usb_protocol_ops = & snd_usbmidi_akai_ops ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; endpoints [ 1 ] . out_cables = 0 ; break ; case QUIRK_MIDI_FTDI : umidi -> usb_protocol_ops = & snd_usbmidi_ftdi_ops ; err = usb_control_msg ( umidi -> dev , usb_sndctrlpipe ( umidi -> dev , 0 ) , 3 , 0x40 , 0x60 , 0 , NULL , 0 , 1000 ) ; if ( err < 0 ) break ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; case QUIRK_MIDI_CH345 : umidi -> usb_protocol_ops = & snd_usbmidi_ch345_broken_sysex_ops ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; default : dev_err ( & umidi -> dev -> dev , \"invalid<S2SV_blank>quirk<S2SV_blank>type<S2SV_blank>%d\\\\n\" , quirk -> type ) ; err = - ENXIO ; break ; } if ( err < 0 ) { kfree ( umidi ) ; return err ; } out_ports = 0 ; in_ports = 0 ; for ( i = 0 ; i < MIDI_MAX_ENDPOINTS ; ++ i ) { out_ports += hweight16 ( endpoints [ i ] . out_cables ) ; in_ports += hweight16 ( endpoints [ i ] . in_cables ) ; } err = snd_usbmidi_create_rawmidi ( umidi , out_ports , in_ports ) ; if ( err < 0 ) { kfree ( umidi ) ; return err ; } if ( quirk && quirk -> type == QUIRK_MIDI_MIDIMAN ) err = snd_usbmidi_create_endpoints_midiman ( umidi , & endpoints [ 0 ] ) ; else err = snd_usbmidi_create_endpoints ( umidi , endpoints ) ; if ( err < 0 ) { <S2SV_StartBug> snd_usbmidi_free ( umidi ) ; <S2SV_EndBug> return err ; } usb_autopm_get_interface_no_resume ( umidi -> iface ) ; list_add_tail ( & umidi -> list , midi_list ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { <S2SV_ModEnd> return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17862\n\n```\nCWE-20 static int adjust_insn_aux_data ( struct bpf_verifier_env * env , u32 prog_len , u32 off , u32 cnt ) { <S2SV_StartBug> struct bpf_insn_aux_data * new_data , * old_data = env -> insn_aux_data ; <S2SV_EndBug> if ( cnt == 1 ) return 0 ; new_data = vzalloc ( sizeof ( struct bpf_insn_aux_data ) * prog_len ) ; if ( ! new_data ) return - ENOMEM ; memcpy ( new_data , old_data , sizeof ( struct bpf_insn_aux_data ) * off ) ; memcpy ( new_data + off + cnt - 1 , old_data + off , sizeof ( struct bpf_insn_aux_data ) * ( prog_len - off - cnt + 1 ) ) ; <S2SV_StartBug> env -> insn_aux_data = new_data ; <S2SV_EndBug> vfree ( old_data ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> env -> insn_aux_data ; int i <S2SV_ModStart> ) ) ; for ( i = off ; i < off + cnt - 1 ; i ++ ) new_data [ i ] . seen = true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3980\n\n```\nCWE-264 int _fep_open_control_socket ( Fep * fep ) { struct sockaddr_un sun ; char * path ; int fd ; ssize_t sun_len ; fd = socket ( AF_UNIX , SOCK_STREAM , 0 ) ; if ( fd < 0 ) { perror ( \"socket\" ) ; return - 1 ; } path = create_socket_name ( \"fep-XXXXXX/control\" ) ; if ( strlen ( path ) + 1 >= sizeof ( sun . sun_path ) ) { fep_log ( FEP_LOG_LEVEL_WARNING , \"unix<S2SV_blank>domain<S2SV_blank>socket<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long:<S2SV_blank>%d<S2SV_blank>+<S2SV_blank>1<S2SV_blank>>=<S2SV_blank>%d\" , strlen ( path ) , sizeof ( sun . sun_path ) ) ; free ( path ) ; return - 1 ; } memset ( & sun , 0 , sizeof ( sun ) ) ; sun . sun_family = AF_UNIX ; <S2SV_StartBug> # ifdef __linux__ <S2SV_EndBug> <S2SV_StartBug> sun . sun_path [ 0 ] = '\\\\0' ; <S2SV_EndBug> memcpy ( sun . sun_path + 1 , path , strlen ( path ) ) ; <S2SV_StartBug> sun_len = offsetof ( struct sockaddr_un , sun_path ) + strlen ( path ) + 1 ; <S2SV_EndBug> remove_control_socket ( path ) ; # else memcpy ( sun . sun_path , path , strlen ( path ) ) ; sun_len = sizeof ( struct sockaddr_un ) ; # endif if ( bind ( fd , ( const struct sockaddr * ) & sun , sun_len ) < 0 ) { perror ( \"bind\" ) ; free ( path ) ; close ( fd ) ; return - 1 ; } if ( listen ( fd , 5 ) < 0 ) { perror ( \"listen\" ) ; free ( path ) ; close ( fd ) ; return - 1 ; } fep -> server = fd ; fep -> control_socket_path = path ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = AF_UNIX ; memcpy ( <S2SV_ModEnd> sun . sun_path <S2SV_ModStart> sun . sun_path <S2SV_ModEnd> , path , <S2SV_ModStart> ; sun_len = sizeof <S2SV_ModEnd> ( struct sockaddr_un <S2SV_ModStart> ( struct sockaddr_un ) ; <S2SV_ModEnd> if ( bind\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9644\n\n```\nCWE-264 struct crypto_template * crypto_lookup_template ( const char * name ) { <S2SV_StartBug> return try_then_request_module ( __crypto_lookup_template ( name ) , \"%s\" , <S2SV_EndBug> name ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> name ) , \"crypto-%s\" <S2SV_ModEnd> , name )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 static struct net_device * _init_airo_card ( unsigned short irq , int port , int is_pcmcia , struct pci_dev * pci , struct device * dmdev ) { struct net_device * dev ; struct airo_info * ai ; int i , rc ; CapabilityRid cap_rid ; dev = alloc_netdev ( sizeof ( * ai ) , \"\" , ether_setup ) ; if ( ! dev ) { airo_print_err ( \"\" , \"Couldn\\'t<S2SV_blank>alloc_etherdev\" ) ; return NULL ; } ai = dev -> ml_priv = netdev_priv ( dev ) ; ai -> wifidev = NULL ; ai -> flags = 1 << FLAG_RADIO_DOWN ; ai -> jobs = 0 ; ai -> dev = dev ; if ( pci && ( pci -> device == 0x5000 || pci -> device == 0xa504 ) ) { airo_print_dbg ( \"\" , \"Found<S2SV_blank>an<S2SV_blank>MPI350<S2SV_blank>card\" ) ; set_bit ( FLAG_MPI , & ai -> flags ) ; } spin_lock_init ( & ai -> aux_lock ) ; sema_init ( & ai -> sem , 1 ) ; ai -> config . len = 0 ; ai -> pci = pci ; init_waitqueue_head ( & ai -> thr_wait ) ; ai -> tfm = NULL ; add_airo_dev ( ai ) ; if ( airo_networks_allocate ( ai ) ) goto err_out_free ; airo_networks_initialize ( ai ) ; skb_queue_head_init ( & ai -> txq ) ; if ( test_bit ( FLAG_MPI , & ai -> flags ) ) dev -> netdev_ops = & mpi_netdev_ops ; else dev -> netdev_ops = & airo_netdev_ops ; dev -> wireless_handlers = & airo_handler_def ; ai -> wireless_data . spy_data = & ai -> spy_data ; dev -> wireless_data = & ai -> wireless_data ; dev -> irq = irq ; dev -> base_addr = port ; <S2SV_StartBug> SET_NETDEV_DEV ( dev , dmdev ) ; <S2SV_EndBug> reset_card ( dev , 1 ) ; msleep ( 400 ) ; if ( ! is_pcmcia ) { if ( ! request_region ( dev -> base_addr , 64 , DRV_NAME ) ) { rc = - EBUSY ; airo_print_err ( dev -> name , \"Couldn\\'t<S2SV_blank>request<S2SV_blank>region\" ) ; goto err_out_nets ; } } if ( test_bit ( FLAG_MPI , & ai -> flags ) ) { if ( mpi_map_card ( ai , pci ) ) { airo_print_err ( \"\" , \"Could<S2SV_blank>not<S2SV_blank>map<S2SV_blank>memory\" ) ; goto err_out_res ; } } if ( probe ) { if ( setup_card ( ai , dev -> dev_addr , 1 ) != SUCCESS ) { airo_print_err ( dev -> name , \"MAC<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>enabled\" ) ; rc = - EIO ; goto err_out_map ; } } else if ( ! test_bit ( FLAG_MPI , & ai -> flags ) ) { ai -> bap_read = fast_bap_read ; set_bit ( FLAG_FLASHING , & ai -> flags ) ; } strcpy ( dev -> name , \"eth%d\" ) ; rc = register_netdev ( dev ) ; if ( rc ) { airo_print_err ( dev -> name , \"Couldn\\'t<S2SV_blank>register_netdev\" ) ; goto err_out_map ; } ai -> wifidev = init_wifidev ( ai , dev ) ; if ( ! ai -> wifidev ) goto err_out_reg ; rc = readCapabilityRid ( ai , & cap_rid , 1 ) ; if ( rc != SUCCESS ) { rc = - EIO ; goto err_out_wifi ; } ai -> wep_capable = ( cap_rid . softCap & cpu_to_le16 ( 0x02 ) ) ? 1 : 0 ; ai -> max_wep_idx = ( cap_rid . softCap & cpu_to_le16 ( 0x80 ) ) ? 3 : 0 ; airo_print_info ( dev -> name , \"Firmware<S2SV_blank>version<S2SV_blank>%x.%x.%02d\" , ( ( le16_to_cpu ( cap_rid . softVer ) >> 8 ) & 0xF ) , ( le16_to_cpu ( cap_rid . softVer ) & 0xFF ) , le16_to_cpu ( cap_rid . softSubVer ) ) ; if ( le16_to_cpu ( cap_rid . softVer ) > 0x530 || ( le16_to_cpu ( cap_rid . softVer ) == 0x530 && le16_to_cpu ( cap_rid . softSubVer ) >= 17 ) ) { airo_print_info ( ai -> dev -> name , \"WPA<S2SV_blank>supported.\" ) ; set_bit ( FLAG_WPA_CAPABLE , & ai -> flags ) ; ai -> bssListFirst = RID_WPA_BSSLISTFIRST ; ai -> bssListNext = RID_WPA_BSSLISTNEXT ; ai -> bssListRidLen = sizeof ( BSSListRid ) ; } else { airo_print_info ( ai -> dev -> name , \"WPA<S2SV_blank>unsupported<S2SV_blank>with<S2SV_blank>firmware<S2SV_blank>\" \"versions<S2SV_blank>older<S2SV_blank>than<S2SV_blank>5.30.17.\" ) ; ai -> bssListFirst = RID_BSSLISTFIRST ; ai -> bssListNext = RID_BSSLISTNEXT ; ai -> bssListRidLen = sizeof ( BSSListRid ) - sizeof ( BSSListRidExtra ) ; } set_bit ( FLAG_REGISTERED , & ai -> flags ) ; airo_print_info ( dev -> name , \"MAC<S2SV_blank>enabled<S2SV_blank>%pM\" , dev -> dev_addr ) ; if ( probe && ! test_bit ( FLAG_MPI , & ai -> flags ) ) for ( i = 0 ; i < MAX_FIDS ; i ++ ) ai -> fids [ i ] = transmit_allocate ( ai , AIRO_DEF_MTU , i >= MAX_FIDS / 2 ) ; if ( setup_proc_entry ( dev , dev -> ml_priv ) < 0 ) goto err_out_wifi ; return dev ; err_out_wifi : unregister_netdev ( ai -> wifidev ) ; free_netdev ( ai -> wifidev ) ; err_out_reg : unregister_netdev ( dev ) ; err_out_map : if ( test_bit ( FLAG_MPI , & ai -> flags ) && pci ) { pci_free_consistent ( pci , PCI_SHARED_LEN , ai -> shared , ai -> shared_dma ) ; iounmap ( ai -> pciaux ) ; iounmap ( ai -> pcimem ) ; mpi_unmap_card ( ai -> pci ) ; } err_out_res : if ( ! is_pcmcia ) release_region ( dev -> base_addr , 64 ) ; err_out_nets : airo_networks_free ( ai ) ; err_out_free : del_airo_dev ( ai ) ; free_netdev ( dev ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = port ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6371\n\n```\nCWE-310 struct json_object * json_tokener_parse_ex ( struct json_tokener * tok , const char * str , int len ) { struct json_object * obj = NULL ; char c = '\\\\1' ; # ifdef HAVE_SETLOCALE char * oldlocale = NULL , * tmplocale ; tmplocale = setlocale ( LC_NUMERIC , NULL ) ; if ( tmplocale ) oldlocale = strdup ( tmplocale ) ; setlocale ( LC_NUMERIC , \"C\" ) ; # endif tok -> char_offset = 0 ; <S2SV_StartBug> tok -> err = json_tokener_success ; <S2SV_EndBug> while ( PEEK_CHAR ( c , tok ) ) { redo_char : switch ( state ) { case json_tokener_state_eatws : while ( isspace ( ( int ) c ) ) { if ( ( ! ADVANCE_CHAR ( str , tok ) ) || ( ! PEEK_CHAR ( c , tok ) ) ) goto out ; } if ( c == '/' && ! ( tok -> flags & JSON_TOKENER_STRICT ) ) { printbuf_reset ( tok -> pb ) ; printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; state = json_tokener_state_comment_start ; } else { state = saved_state ; goto redo_char ; } break ; case json_tokener_state_start : switch ( c ) { case '{' : state = json_tokener_state_eatws ; saved_state = json_tokener_state_object_field_start ; current = json_object_new_object ( ) ; break ; case '[' : state = json_tokener_state_eatws ; saved_state = json_tokener_state_array ; current = json_object_new_array ( ) ; break ; case 'I' : case 'i' : state = json_tokener_state_inf ; printbuf_reset ( tok -> pb ) ; tok -> st_pos = 0 ; goto redo_char ; case 'N' : case 'n' : state = json_tokener_state_null ; printbuf_reset ( tok -> pb ) ; tok -> st_pos = 0 ; goto redo_char ; case '\\\\'' : if ( tok -> flags & JSON_TOKENER_STRICT ) { tok -> err = json_tokener_error_parse_unexpected ; goto out ; } case \\'\"\\' : state = json_tokener_state_string ; printbuf_reset ( tok -> pb ) ; tok -> quote_char = c ; break ; case 'T' : case 't' : case 'F' : case 'f' : state = json_tokener_state_boolean ; printbuf_reset ( tok -> pb ) ; tok -> st_pos = 0 ; goto redo_char ; # if defined ( __GNUC__ ) case '0' ... '9' : # else case '0' : case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : # endif case '-' : state = json_tokener_state_number ; printbuf_reset ( tok -> pb ) ; tok -> is_double = 0 ; goto redo_char ; default : tok -> err = json_tokener_error_parse_unexpected ; goto out ; } break ; case json_tokener_state_finish : if ( tok -> depth == 0 ) goto out ; obj = json_object_get ( current ) ; json_tokener_reset_level ( tok , tok -> depth ) ; tok -> depth -- ; goto redo_char ; case json_tokener_state_inf : { int size ; int size_inf ; int is_negative = 0 ; printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; size = json_min ( tok -> st_pos + 1 , json_null_str_len ) ; size_inf = json_min ( tok -> st_pos + 1 , json_inf_str_len ) ; char * infbuf = tok -> pb -> buf ; if ( * infbuf == '-' ) { infbuf ++ ; is_negative = 1 ; } if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_inf_str , infbuf , size_inf ) == 0 ) || ( strncmp ( json_inf_str , infbuf , size_inf ) == 0 ) ) { if ( tok -> st_pos == json_inf_str_len ) { current = json_object_new_double ( is_negative ? - INFINITY : INFINITY ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else { tok -> err = json_tokener_error_parse_unexpected ; goto out ; } tok -> st_pos ++ ; } break ; case json_tokener_state_null : { int size ; int size_nan ; printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; size = json_min ( tok -> st_pos + 1 , json_null_str_len ) ; size_nan = json_min ( tok -> st_pos + 1 , json_nan_str_len ) ; if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_null_str , tok -> pb -> buf , size ) == 0 ) || ( strncmp ( json_null_str , tok -> pb -> buf , size ) == 0 ) ) { if ( tok -> st_pos == json_null_str_len ) { current = NULL ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_nan_str , tok -> pb -> buf , size_nan ) == 0 ) || ( strncmp ( json_nan_str , tok -> pb -> buf , size_nan ) == 0 ) ) { if ( tok -> st_pos == json_nan_str_len ) { current = json_object_new_double ( NAN ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else { tok -> err = json_tokener_error_parse_null ; goto out ; } tok -> st_pos ++ ; } break ; case json_tokener_state_comment_start : if ( c == '*' ) { state = json_tokener_state_comment ; } else if ( c == '/' ) { state = json_tokener_state_comment_eol ; } else { tok -> err = json_tokener_error_parse_comment ; goto out ; } printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; break ; case json_tokener_state_comment : { const char * case_start = str ; while ( c != '*' ) { if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; goto out ; } } printbuf_memappend_fast ( tok -> pb , case_start , 1 + str - case_start ) ; state = json_tokener_state_comment_end ; } break ; case json_tokener_state_comment_eol : { const char * case_start = str ; while ( c != '\\\\n' ) { if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; goto out ; } } printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; MC_DEBUG ( \"json_tokener_comment:<S2SV_blank>%s\\\\n\" , tok -> pb -> buf ) ; state = json_tokener_state_eatws ; } break ; case json_tokener_state_comment_end : printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; if ( c == '/' ) { MC_DEBUG ( \"json_tokener_comment:<S2SV_blank>%s\\\\n\" , tok -> pb -> buf ) ; state = json_tokener_state_eatws ; } else { state = json_tokener_state_comment ; } break ; case json_tokener_state_string : { const char * case_start = str ; while ( 1 ) { if ( c == tok -> quote_char ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; current = json_object_new_string_len ( tok -> pb -> buf , tok -> pb -> bpos ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; break ; } else if ( c == '\\\\\\\\' ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; saved_state = json_tokener_state_string ; state = json_tokener_state_string_escape ; break ; } if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; goto out ; } } } break ; case json_tokener_state_string_escape : switch ( c ) { case \\'\"\\' : case '\\\\\\\\' : case '/' : printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; state = saved_state ; break ; case 'b' : case 'n' : case 'r' : case 't' : case 'f' : if ( c == 'b' ) printbuf_memappend_fast ( tok -> pb , \"\\\\b\" , 1 ) ; else if ( c == 'n' ) printbuf_memappend_fast ( tok -> pb , \"\\\\n\" , 1 ) ; else if ( c == 'r' ) printbuf_memappend_fast ( tok -> pb , \"\\\\r\" , 1 ) ; else if ( c == 't' ) printbuf_memappend_fast ( tok -> pb , \"\\\\t\" , 1 ) ; else if ( c == 'f' ) printbuf_memappend_fast ( tok -> pb , \"\\\\f\" , 1 ) ; state = saved_state ; break ; case 'u' : tok -> ucs_char = 0 ; tok -> st_pos = 0 ; state = json_tokener_state_escape_unicode ; break ; default : tok -> err = json_tokener_error_parse_string ; goto out ; } break ; case json_tokener_state_escape_unicode : { unsigned int got_hi_surrogate = 0 ; while ( 1 ) { if ( strchr ( json_hex_chars , c ) ) { tok -> ucs_char += ( ( unsigned int ) hexdigit ( c ) << ( ( 3 - tok -> st_pos ++ ) * 4 ) ) ; if ( tok -> st_pos == 4 ) { unsigned char unescaped_utf [ 4 ] ; if ( got_hi_surrogate ) { if ( IS_LOW_SURROGATE ( tok -> ucs_char ) ) { tok -> ucs_char = DECODE_SURROGATE_PAIR ( got_hi_surrogate , tok -> ucs_char ) ; } else { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } got_hi_surrogate = 0 ; } if ( tok -> ucs_char < 0x80 ) { unescaped_utf [ 0 ] = tok -> ucs_char ; printbuf_memappend_fast ( tok -> pb , ( char * ) unescaped_utf , 1 ) ; } else if ( tok -> ucs_char < 0x800 ) { unescaped_utf [ 0 ] = 0xc0 | ( tok -> ucs_char >> 6 ) ; unescaped_utf [ 1 ] = 0x80 | ( tok -> ucs_char & 0x3f ) ; printbuf_memappend_fast ( tok -> pb , ( char * ) unescaped_utf , 2 ) ; } else if ( IS_HIGH_SURROGATE ( tok -> ucs_char ) ) { got_hi_surrogate = tok -> ucs_char ; if ( ( tok -> char_offset + 1 != len ) && ( tok -> char_offset + 2 != len ) && ( str [ 1 ] == '\\\\\\\\' ) && ( str [ 2 ] == 'u' ) ) { if ( ! ADVANCE_CHAR ( str , tok ) || ! ADVANCE_CHAR ( str , tok ) ) { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; goto out ; } tok -> ucs_char = 0 ; tok -> st_pos = 0 ; continue ; } else { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } } else if ( IS_LOW_SURROGATE ( tok -> ucs_char ) ) { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } else if ( tok -> ucs_char < 0x10000 ) { unescaped_utf [ 0 ] = 0xe0 | ( tok -> ucs_char >> 12 ) ; unescaped_utf [ 1 ] = 0x80 | ( ( tok -> ucs_char >> 6 ) & 0x3f ) ; unescaped_utf [ 2 ] = 0x80 | ( tok -> ucs_char & 0x3f ) ; printbuf_memappend_fast ( tok -> pb , ( char * ) unescaped_utf , 3 ) ; } else if ( tok -> ucs_char < 0x110000 ) { unescaped_utf [ 0 ] = 0xf0 | ( ( tok -> ucs_char >> 18 ) & 0x07 ) ; unescaped_utf [ 1 ] = 0x80 | ( ( tok -> ucs_char >> 12 ) & 0x3f ) ; unescaped_utf [ 2 ] = 0x80 | ( ( tok -> ucs_char >> 6 ) & 0x3f ) ; unescaped_utf [ 3 ] = 0x80 | ( tok -> ucs_char & 0x3f ) ; printbuf_memappend_fast ( tok -> pb , ( char * ) unescaped_utf , 4 ) ; } else { printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; } state = saved_state ; break ; } } else { tok -> err = json_tokener_error_parse_string ; goto out ; } if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { if ( got_hi_surrogate ) printbuf_memappend_fast ( tok -> pb , ( char * ) utf8_replacement_char , 3 ) ; goto out ; } } } break ; case json_tokener_state_boolean : { int size1 , size2 ; printbuf_memappend_fast ( tok -> pb , & c , 1 ) ; size1 = json_min ( tok -> st_pos + 1 , json_true_str_len ) ; size2 = json_min ( tok -> st_pos + 1 , json_false_str_len ) ; if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_true_str , tok -> pb -> buf , size1 ) == 0 ) || ( strncmp ( json_true_str , tok -> pb -> buf , size1 ) == 0 ) ) { if ( tok -> st_pos == json_true_str_len ) { current = json_object_new_boolean ( 1 ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else if ( ( ! ( tok -> flags & JSON_TOKENER_STRICT ) && strncasecmp ( json_false_str , tok -> pb -> buf , size2 ) == 0 ) || ( strncmp ( json_false_str , tok -> pb -> buf , size2 ) == 0 ) ) { if ( tok -> st_pos == json_false_str_len ) { current = json_object_new_boolean ( 0 ) ; saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } } else { tok -> err = json_tokener_error_parse_boolean ; goto out ; } tok -> st_pos ++ ; } break ; case json_tokener_state_number : { const char * case_start = str ; int case_len = 0 ; while ( c && strchr ( json_number_chars , c ) ) { ++ case_len ; if ( c == '.' || c == 'e' || c == 'E' ) tok -> is_double = 1 ; if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , case_len ) ; goto out ; } } if ( case_len > 0 ) printbuf_memappend_fast ( tok -> pb , case_start , case_len ) ; if ( tok -> pb -> buf [ 0 ] == '-' && case_len == 1 && ( c == 'i' || c == 'I' ) ) { state = json_tokener_state_inf ; goto redo_char ; } } { int64_t num64 ; double numd ; if ( ! tok -> is_double && json_parse_int64 ( tok -> pb -> buf , & num64 ) == 0 ) { if ( num64 && tok -> pb -> buf [ 0 ] == '0' && ( tok -> flags & JSON_TOKENER_STRICT ) ) { tok -> err = json_tokener_error_parse_number ; goto out ; } current = json_object_new_int64 ( num64 ) ; } else if ( tok -> is_double && json_parse_double ( tok -> pb -> buf , & numd ) == 0 ) { current = json_object_new_double_s ( numd , tok -> pb -> buf ) ; } else { tok -> err = json_tokener_error_parse_number ; goto out ; } saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; goto redo_char ; } break ; case json_tokener_state_array_after_sep : case json_tokener_state_array : if ( c == ']' ) { if ( state == json_tokener_state_array_after_sep && ( tok -> flags & JSON_TOKENER_STRICT ) ) { tok -> err = json_tokener_error_parse_unexpected ; goto out ; } saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; } else { if ( tok -> depth >= tok -> max_depth - 1 ) { tok -> err = json_tokener_error_depth ; goto out ; } state = json_tokener_state_array_add ; tok -> depth ++ ; json_tokener_reset_level ( tok , tok -> depth ) ; goto redo_char ; } break ; case json_tokener_state_array_add : json_object_array_add ( current , obj ) ; saved_state = json_tokener_state_array_sep ; state = json_tokener_state_eatws ; goto redo_char ; case json_tokener_state_array_sep : if ( c == ']' ) { saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; } else if ( c == ',' ) { saved_state = json_tokener_state_array_after_sep ; state = json_tokener_state_eatws ; } else { tok -> err = json_tokener_error_parse_array ; goto out ; } break ; case json_tokener_state_object_field_start : case json_tokener_state_object_field_start_after_sep : if ( c == '}' ) { if ( state == json_tokener_state_object_field_start_after_sep && ( tok -> flags & JSON_TOKENER_STRICT ) ) { tok -> err = json_tokener_error_parse_unexpected ; goto out ; } saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; } else if ( c == \\'\"\\' || c == '\\\\'' ) { tok -> quote_char = c ; printbuf_reset ( tok -> pb ) ; state = json_tokener_state_object_field ; } else { tok -> err = json_tokener_error_parse_object_key_name ; goto out ; } break ; case json_tokener_state_object_field : { const char * case_start = str ; while ( 1 ) { if ( c == tok -> quote_char ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; obj_field_name = strdup ( tok -> pb -> buf ) ; saved_state = json_tokener_state_object_field_end ; state = json_tokener_state_eatws ; break ; } else if ( c == '\\\\\\\\' ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; saved_state = json_tokener_state_object_field ; state = json_tokener_state_string_escape ; break ; } if ( ! ADVANCE_CHAR ( str , tok ) || ! PEEK_CHAR ( c , tok ) ) { printbuf_memappend_fast ( tok -> pb , case_start , str - case_start ) ; goto out ; } } } break ; case json_tokener_state_object_field_end : if ( c == ':' ) { saved_state = json_tokener_state_object_value ; state = json_tokener_state_eatws ; } else { tok -> err = json_tokener_error_parse_object_key_sep ; goto out ; } break ; case json_tokener_state_object_value : if ( tok -> depth >= tok -> max_depth - 1 ) { tok -> err = json_tokener_error_depth ; goto out ; } state = json_tokener_state_object_value_add ; tok -> depth ++ ; json_tokener_reset_level ( tok , tok -> depth ) ; goto redo_char ; case json_tokener_state_object_value_add : json_object_object_add ( current , obj_field_name , obj ) ; free ( obj_field_name ) ; obj_field_name = NULL ; saved_state = json_tokener_state_object_sep ; state = json_tokener_state_eatws ; goto redo_char ; case json_tokener_state_object_sep : if ( c == '}' ) { saved_state = json_tokener_state_finish ; state = json_tokener_state_eatws ; } else if ( c == ',' ) { saved_state = json_tokener_state_object_field_start_after_sep ; state = json_tokener_state_eatws ; } else { tok -> err = json_tokener_error_parse_object_value_sep ; goto out ; } break ; } if ( ! ADVANCE_CHAR ( str , tok ) ) goto out ; } out : if ( c && ( state == json_tokener_state_finish ) && ( tok -> depth == 0 ) && ( tok -> flags & JSON_TOKENER_STRICT ) ) { tok -> err = json_tokener_error_parse_unexpected ; } if ( ! c ) { if ( state != json_tokener_state_finish && saved_state != json_tokener_state_finish ) tok -> err = json_tokener_error_parse_eof ; } # ifdef HAVE_SETLOCALE setlocale ( LC_NUMERIC , oldlocale ) ; if ( oldlocale ) free ( oldlocale ) ; # endif if ( tok -> err == json_tokener_success ) { json_object * ret = json_object_get ( current ) ; int ii ; for ( ii = tok -> depth ; ii >= 0 ; ii -- ) json_tokener_reset_level ( tok , ii ) ; return ret ; } MC_DEBUG ( \"json_tokener_parse_ex:<S2SV_blank>error<S2SV_blank>%s<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%d\\\\n\" , json_tokener_errors [ tok -> err ] , tok -> char_offset ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = json_tokener_success ; if ( ( len < - 1 ) || ( len == - 1 && strlen ( str ) > INT32_MAX ) ) { tok -> err = json_tokener_error_size ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10211\n\n```\nCWE-416 int yyparse ( void * yyscanner , YR_COMPILER * compiler ) { int yychar ; YY_INITIAL_VALUE ( static YYSTYPE yyval_default ; ) YYSTYPE yylval YY_INITIAL_VALUE ( = yyval_default ) ; int yynerrs ; int yystate ; int yyerrstatus ; yytype_int16 yyssa [ YYINITDEPTH ] ; yytype_int16 * yyss ; yytype_int16 * yyssp ; YYSTYPE yyvsa [ YYINITDEPTH ] ; YYSTYPE * yyvs ; YYSTYPE * yyvsp ; YYSIZE_T yystacksize ; int yyn ; int yyresult ; int yytoken = 0 ; YYSTYPE yyval ; # if YYERROR_VERBOSE char yymsgbuf [ 128 ] ; char * yymsg = yymsgbuf ; YYSIZE_T yymsg_alloc = sizeof yymsgbuf ; # endif # define YYPOPSTACK ( N ) ( yyvsp -= ( N ) , yyssp -= ( N ) ) int yylen = 0 ; yyssp = yyss = yyssa ; yyvsp = yyvs = yyvsa ; yystacksize = YYINITDEPTH ; YYDPRINTF ( ( stderr , \"Starting<S2SV_blank>parse\\\\n\" ) ) ; yystate = 0 ; yyerrstatus = 0 ; yynerrs = 0 ; yychar = YYEMPTY ; goto yysetstate ; yynewstate : yyssp ++ ; yysetstate : * yyssp = yystate ; if ( yyss + yystacksize - 1 <= yyssp ) { YYSIZE_T yysize = yyssp - yyss + 1 ; # ifdef yyoverflow { YYSTYPE * yyvs1 = yyvs ; yytype_int16 * yyss1 = yyss ; yyoverflow ( YY_ ( \"memory<S2SV_blank>exhausted\" ) , & yyss1 , yysize * sizeof ( * yyssp ) , & yyvs1 , yysize * sizeof ( * yyvsp ) , & yystacksize ) ; yyss = yyss1 ; yyvs = yyvs1 ; } # else # ifndef YYSTACK_RELOCATE goto yyexhaustedlab ; # else if ( YYMAXDEPTH <= yystacksize ) goto yyexhaustedlab ; yystacksize *= 2 ; if ( YYMAXDEPTH < yystacksize ) yystacksize = YYMAXDEPTH ; { yytype_int16 * yyss1 = yyss ; union yyalloc * yyptr = ( union yyalloc * ) YYSTACK_ALLOC ( YYSTACK_BYTES ( yystacksize ) ) ; if ( ! yyptr ) goto yyexhaustedlab ; YYSTACK_RELOCATE ( yyss_alloc , yyss ) ; YYSTACK_RELOCATE ( yyvs_alloc , yyvs ) ; # undef YYSTACK_RELOCATE if ( yyss1 != yyssa ) YYSTACK_FREE ( yyss1 ) ; } # endif # endif yyssp = yyss + yysize - 1 ; yyvsp = yyvs + yysize - 1 ; YYDPRINTF ( ( stderr , \"Stack<S2SV_blank>size<S2SV_blank>increased<S2SV_blank>to<S2SV_blank>%lu\\\\n\" , ( unsigned long int ) yystacksize ) ) ; if ( yyss + yystacksize - 1 <= yyssp ) YYABORT ; } YYDPRINTF ( ( stderr , \"Entering<S2SV_blank>state<S2SV_blank>%d\\\\n\" , yystate ) ) ; if ( yystate == YYFINAL ) YYACCEPT ; goto yybackup ; yybackup : yyn = yypact [ yystate ] ; if ( yypact_value_is_default ( yyn ) ) goto yydefault ; if ( yychar == YYEMPTY ) { YYDPRINTF ( ( stderr , \"Reading<S2SV_blank>a<S2SV_blank>token:<S2SV_blank>\" ) ) ; yychar = yylex ( & yylval , yyscanner , compiler ) ; } if ( yychar <= YYEOF ) { yychar = yytoken = YYEOF ; YYDPRINTF ( ( stderr , \"Now<S2SV_blank>at<S2SV_blank>end<S2SV_blank>of<S2SV_blank>input.\\\\n\" ) ) ; } else { yytoken = YYTRANSLATE ( yychar ) ; YY_SYMBOL_PRINT ( \"Next<S2SV_blank>token<S2SV_blank>is\" , yytoken , & yylval , & yylloc ) ; } yyn += yytoken ; if ( yyn < 0 || YYLAST < yyn || yycheck [ yyn ] != yytoken ) goto yydefault ; yyn = yytable [ yyn ] ; if ( yyn <= 0 ) { if ( yytable_value_is_error ( yyn ) ) goto yyerrlab ; yyn = - yyn ; goto yyreduce ; } if ( yyerrstatus ) yyerrstatus -- ; YY_SYMBOL_PRINT ( \"Shifting\" , yytoken , & yylval , & yylloc ) ; yychar = YYEMPTY ; yystate = yyn ; YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN * ++ yyvsp = yylval ; YY_IGNORE_MAYBE_UNINITIALIZED_END goto yynewstate ; yydefault : yyn = yydefact [ yystate ] ; if ( yyn == 0 ) goto yyerrlab ; goto yyreduce ; yyreduce : yylen = yyr2 [ yyn ] ; yyval = yyvsp [ 1 - yylen ] ; YY_REDUCE_PRINT ( yyn ) ; switch ( yyn ) { case 8 : # line 230 \"grammar.y\" { int result = yr_parser_reduce_import ( yyscanner , ( yyvsp [ 0 ] . sized_string ) ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; ERROR_IF ( result != ERROR_SUCCESS ) ; } # line 1661 \"grammar.c\" break ; case 9 : # line 242 \"grammar.y\" { YR_RULE * rule = yr_parser_reduce_rule_declaration_phase_1 ( yyscanner , ( int32_t ) ( yyvsp [ - 2 ] . integer ) , ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( rule == NULL ) ; ( yyval . rule ) = rule ; } # line 1674 \"grammar.c\" break ; case 10 : # line 251 \"grammar.y\" { YR_RULE * rule = ( yyvsp [ - 4 ] . rule ) ; rule -> tags = ( yyvsp [ - 3 ] . c_string ) ; rule -> metas = ( yyvsp [ - 1 ] . meta ) ; rule -> strings = ( yyvsp [ 0 ] . string ) ; } # line 1686 \"grammar.c\" break ; case 11 : # line 259 \"grammar.y\" { YR_RULE * rule = ( yyvsp [ - 7 ] . rule ) ; compiler -> last_result = yr_parser_reduce_rule_declaration_phase_2 ( yyscanner , rule ) ; yr_free ( ( yyvsp [ - 8 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 1701 \"grammar.c\" break ; case 12 : # line 274 \"grammar.y\" { ( yyval . meta ) = NULL ; } # line 1709 \"grammar.c\" break ; case 13 : # line 278 \"grammar.y\" { YR_META null_meta ; memset ( & null_meta , 0xFF , sizeof ( YR_META ) ) ; null_meta . type = META_TYPE_NULL ; compiler -> last_result = yr_arena_write_data ( compiler -> metas_arena , & null_meta , sizeof ( YR_META ) , NULL ) ; ( yyval . meta ) = ( yyvsp [ 0 ] . meta ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 1736 \"grammar.c\" break ; case 14 : # line 305 \"grammar.y\" { ( yyval . string ) = NULL ; } # line 1744 \"grammar.c\" break ; case 15 : # line 309 \"grammar.y\" { YR_STRING null_string ; memset ( & null_string , 0xFF , sizeof ( YR_STRING ) ) ; null_string . g_flags = STRING_GFLAGS_NULL ; compiler -> last_result = yr_arena_write_data ( compiler -> strings_arena , & null_string , sizeof ( YR_STRING ) , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . string ) = ( yyvsp [ 0 ] . string ) ; } # line 1771 \"grammar.c\" break ; case 17 : # line 340 \"grammar.y\" { ( yyval . integer ) = 0 ; } # line 1777 \"grammar.c\" break ; case 18 : # line 341 \"grammar.y\" { ( yyval . integer ) = ( yyvsp [ - 1 ] . integer ) | ( yyvsp [ 0 ] . integer ) ; } # line 1783 \"grammar.c\" break ; case 19 : # line 346 \"grammar.y\" { ( yyval . integer ) = RULE_GFLAGS_PRIVATE ; } # line 1789 \"grammar.c\" break ; case 20 : # line 347 \"grammar.y\" { ( yyval . integer ) = RULE_GFLAGS_GLOBAL ; } # line 1795 \"grammar.c\" break ; case 21 : # line 353 \"grammar.y\" { ( yyval . c_string ) = NULL ; } # line 1803 \"grammar.c\" break ; case 22 : # line 357 \"grammar.y\" { compiler -> last_result = yr_arena_write_string ( yyget_extra ( yyscanner ) -> sz_arena , \"\" , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . c_string ) = ( yyvsp [ 0 ] . c_string ) ; } # line 1821 \"grammar.c\" break ; case 23 : # line 375 \"grammar.y\" { char * identifier ; compiler -> last_result = yr_arena_write_string ( yyget_extra ( yyscanner ) -> sz_arena , ( yyvsp [ 0 ] . c_string ) , & identifier ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . c_string ) = identifier ; } # line 1838 \"grammar.c\" break ; case 24 : # line 388 \"grammar.y\" { char * tag_name = ( yyvsp [ - 1 ] . c_string ) ; size_t tag_length = tag_name != NULL ? strlen ( tag_name ) : 0 ; while ( tag_length > 0 ) { if ( strcmp ( tag_name , ( yyvsp [ 0 ] . c_string ) ) == 0 ) { yr_compiler_set_error_extra_info ( compiler , tag_name ) ; compiler -> last_result = ERROR_DUPLICATED_TAG_IDENTIFIER ; break ; } tag_name = ( char * ) yr_arena_next_address ( yyget_extra ( yyscanner ) -> sz_arena , tag_name , tag_length + 1 ) ; tag_length = tag_name != NULL ? strlen ( tag_name ) : 0 ; } if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_arena_write_string ( yyget_extra ( yyscanner ) -> sz_arena , ( yyvsp [ 0 ] . c_string ) , NULL ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . c_string ) = ( yyvsp [ - 1 ] . c_string ) ; } # line 1874 \"grammar.c\" break ; case 25 : # line 424 \"grammar.y\" { ( yyval . meta ) = ( yyvsp [ 0 ] . meta ) ; } # line 1880 \"grammar.c\" break ; case 26 : # line 425 \"grammar.y\" { ( yyval . meta ) = ( yyvsp [ - 1 ] . meta ) ; } # line 1886 \"grammar.c\" break ; case 27 : # line 431 \"grammar.y\" { SIZED_STRING * sized_string = ( yyvsp [ 0 ] . sized_string ) ; ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_STRING , ( yyvsp [ - 2 ] . c_string ) , sized_string -> c_string , 0 ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1906 \"grammar.c\" break ; case 28 : # line 447 \"grammar.y\" { ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_INTEGER , ( yyvsp [ - 2 ] . c_string ) , NULL , ( yyvsp [ 0 ] . integer ) ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1923 \"grammar.c\" break ; case 29 : # line 460 \"grammar.y\" { ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_INTEGER , ( yyvsp [ - 3 ] . c_string ) , NULL , - ( yyvsp [ 0 ] . integer ) ) ; yr_free ( ( yyvsp [ - 3 ] . c_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1940 \"grammar.c\" break ; case 30 : # line 473 \"grammar.y\" { ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_BOOLEAN , ( yyvsp [ - 2 ] . c_string ) , NULL , TRUE ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1957 \"grammar.c\" break ; case 31 : # line 486 \"grammar.y\" { ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_BOOLEAN , ( yyvsp [ - 2 ] . c_string ) , NULL , FALSE ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1974 \"grammar.c\" break ; case 32 : # line 502 \"grammar.y\" { ( yyval . string ) = ( yyvsp [ 0 ] . string ) ; } # line 1980 \"grammar.c\" break ; case 33 : # line 503 \"grammar.y\" { ( yyval . string ) = ( yyvsp [ - 1 ] . string ) ; } # line 1986 \"grammar.c\" break ; case 34 : # line 509 \"grammar.y\" { compiler -> error_line = yyget_lineno ( yyscanner ) ; } # line 1994 \"grammar.c\" break ; case 35 : # line 513 \"grammar.y\" { ( yyval . string ) = yr_parser_reduce_string_declaration ( yyscanner , ( int32_t ) ( yyvsp [ 0 ] . integer ) , ( yyvsp [ - 4 ] . c_string ) , ( yyvsp [ - 1 ] . sized_string ) ) ; yr_free ( ( yyvsp [ - 4 ] . c_string ) ) ; yr_free ( ( yyvsp [ - 1 ] . sized_string ) ) ; ERROR_IF ( ( yyval . string ) == NULL ) ; compiler -> error_line = 0 ; } # line 2009 \"grammar.c\" break ; case 36 : # line 524 \"grammar.y\" { compiler -> error_line = yyget_lineno ( yyscanner ) ; } # line 2017 \"grammar.c\" break ; case 37 : # line 528 \"grammar.y\" { ( yyval . string ) = yr_parser_reduce_string_declaration ( yyscanner , ( int32_t ) ( yyvsp [ 0 ] . integer ) | STRING_GFLAGS_REGEXP , ( yyvsp [ - 4 ] . c_string ) , ( yyvsp [ - 1 ] . sized_string ) ) ; yr_free ( ( yyvsp [ - 4 ] . c_string ) ) ; yr_free ( ( yyvsp [ - 1 ] . sized_string ) ) ; ERROR_IF ( ( yyval . string ) == NULL ) ; compiler -> error_line = 0 ; } # line 2033 \"grammar.c\" break ; case 38 : # line 540 \"grammar.y\" { ( yyval . string ) = yr_parser_reduce_string_declaration ( yyscanner , STRING_GFLAGS_HEXADECIMAL , ( yyvsp [ - 2 ] . c_string ) , ( yyvsp [ 0 ] . sized_string ) ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; ERROR_IF ( ( yyval . string ) == NULL ) ; } # line 2047 \"grammar.c\" break ; case 39 : # line 553 \"grammar.y\" { ( yyval . integer ) = 0 ; } # line 2053 \"grammar.c\" break ; case 40 : # line 554 \"grammar.y\" { ( yyval . integer ) = ( yyvsp [ - 1 ] . integer ) | ( yyvsp [ 0 ] . integer ) ; } # line 2059 \"grammar.c\" break ; case 41 : # line 559 \"grammar.y\" { ( yyval . integer ) = STRING_GFLAGS_WIDE ; } # line 2065 \"grammar.c\" break ; case 42 : # line 560 \"grammar.y\" { ( yyval . integer ) = STRING_GFLAGS_ASCII ; } # line 2071 \"grammar.c\" break ; case 43 : # line 561 \"grammar.y\" { ( yyval . integer ) = STRING_GFLAGS_NO_CASE ; } # line 2077 \"grammar.c\" break ; case 44 : # line 562 \"grammar.y\" { ( yyval . integer ) = STRING_GFLAGS_FULL_WORD ; } # line 2083 \"grammar.c\" break ; case 45 : # line 568 \"grammar.y\" { int var_index = yr_parser_lookup_loop_variable ( yyscanner , ( yyvsp [ 0 ] . c_string ) ) ; if ( var_index >= 0 ) { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , LOOP_LOCAL_VARS * var_index , NULL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; ( yyval . expression ) . identifier = compiler -> loop_identifier [ var_index ] ; } else { YR_OBJECT * object = ( YR_OBJECT * ) yr_hash_table_lookup ( compiler -> objects_table , ( yyvsp [ 0 ] . c_string ) , NULL ) ; if ( object == NULL ) { char * ns = compiler -> current_namespace -> name ; object = ( YR_OBJECT * ) yr_hash_table_lookup ( compiler -> objects_table , ( yyvsp [ 0 ] . c_string ) , ns ) ; } if ( object != NULL ) { char * id ; compiler -> last_result = yr_arena_write_string ( compiler -> sz_arena , ( yyvsp [ 0 ] . c_string ) , & id ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_OBJ_LOAD , id , NULL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = object ; ( yyval . expression ) . identifier = object -> identifier ; } else { YR_RULE * rule = ( YR_RULE * ) yr_hash_table_lookup ( compiler -> rules_table , ( yyvsp [ 0 ] . c_string ) , compiler -> current_namespace -> name ) ; if ( rule != NULL ) { compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_PUSH_RULE , rule , NULL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; ( yyval . expression ) . value . integer = UNDEFINED ; ( yyval . expression ) . identifier = rule -> identifier ; } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ 0 ] . c_string ) ) ; compiler -> last_result = ERROR_UNDEFINED_IDENTIFIER ; } } } yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 2172 \"grammar.c\" break ; case 46 : # line 653 \"grammar.y\" { YR_OBJECT * field = NULL ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_OBJECT && ( yyvsp [ - 2 ] . expression ) . value . object -> type == OBJECT_TYPE_STRUCTURE ) { field = yr_object_lookup_field ( ( yyvsp [ - 2 ] . expression ) . value . object , ( yyvsp [ 0 ] . c_string ) ) ; if ( field != NULL ) { char * ident ; compiler -> last_result = yr_arena_write_string ( compiler -> sz_arena , ( yyvsp [ 0 ] . c_string ) , & ident ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_OBJ_FIELD , ident , NULL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = field ; ( yyval . expression ) . identifier = field -> identifier ; } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ 0 ] . c_string ) ) ; compiler -> last_result = ERROR_INVALID_FIELD_NAME ; } } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ - 2 ] . expression ) . identifier ) ; compiler -> last_result = ERROR_NOT_A_STRUCTURE ; } yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 2222 \"grammar.c\" break ; case 47 : # line 699 \"grammar.y\" { YR_OBJECT_ARRAY * array ; YR_OBJECT_DICTIONARY * dict ; if ( ( yyvsp [ - 3 ] . expression ) . type == EXPRESSION_TYPE_OBJECT && ( yyvsp [ - 3 ] . expression ) . value . object -> type == OBJECT_TYPE_ARRAY ) { if ( ( yyvsp [ - 1 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"array<S2SV_blank>indexes<S2SV_blank>must<S2SV_blank>be<S2SV_blank>of<S2SV_blank>integer<S2SV_blank>type\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_INDEX_ARRAY , NULL ) ; array = ( YR_OBJECT_ARRAY * ) ( yyvsp [ - 3 ] . expression ) . value . object ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = array -> prototype_item ; ( yyval . expression ) . identifier = array -> identifier ; } else if ( ( yyvsp [ - 3 ] . expression ) . type == EXPRESSION_TYPE_OBJECT && ( yyvsp [ - 3 ] . expression ) . value . object -> type == OBJECT_TYPE_DICTIONARY ) { if ( ( yyvsp [ - 1 ] . expression ) . type != EXPRESSION_TYPE_STRING ) { yr_compiler_set_error_extra_info ( compiler , \"dictionary<S2SV_blank>keys<S2SV_blank>must<S2SV_blank>be<S2SV_blank>of<S2SV_blank>string<S2SV_blank>type\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_LOOKUP_DICT , NULL ) ; dict = ( YR_OBJECT_DICTIONARY * ) ( yyvsp [ - 3 ] . expression ) . value . object ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = dict -> prototype_item ; ( yyval . expression ) . identifier = dict -> identifier ; } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ - 3 ] . expression ) . identifier ) ; compiler -> last_result = ERROR_NOT_INDEXABLE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 2283 \"grammar.c\" break ; case 48 : # line 757 \"grammar.y\" { YR_OBJECT_FUNCTION * function ; char * args_fmt ; if ( ( yyvsp [ - 3 ] . expression ) . type == EXPRESSION_TYPE_OBJECT && ( yyvsp [ - 3 ] . expression ) . value . object -> type == OBJECT_TYPE_FUNCTION ) { compiler -> last_result = yr_parser_check_types ( compiler , ( YR_OBJECT_FUNCTION * ) ( yyvsp [ - 3 ] . expression ) . value . object , ( yyvsp [ - 1 ] . c_string ) ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_arena_write_string ( compiler -> sz_arena , ( yyvsp [ - 1 ] . c_string ) , & args_fmt ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_CALL , args_fmt , NULL , NULL ) ; function = ( YR_OBJECT_FUNCTION * ) ( yyvsp [ - 3 ] . expression ) . value . object ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = function -> return_obj ; ( yyval . expression ) . identifier = function -> identifier ; } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ - 3 ] . expression ) . identifier ) ; compiler -> last_result = ERROR_NOT_A_FUNCTION ; } yr_free ( ( yyvsp [ - 1 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 2328 \"grammar.c\" break ; case 49 : # line 801 \"grammar.y\" { ( yyval . c_string ) = yr_strdup ( \"\" ) ; } # line 2334 \"grammar.c\" break ; case 50 : # line 802 \"grammar.y\" { ( yyval . c_string ) = ( yyvsp [ 0 ] . c_string ) ; } # line 2340 \"grammar.c\" break ; case 51 : # line 807 \"grammar.y\" { ( yyval . c_string ) = ( char * ) yr_malloc ( MAX_FUNCTION_ARGS + 1 ) ; switch ( ( yyvsp [ 0 ] . expression ) . type ) { case EXPRESSION_TYPE_INTEGER : strlcpy ( ( yyval . c_string ) , \"i\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_FLOAT : strlcpy ( ( yyval . c_string ) , \"f\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_BOOLEAN : strlcpy ( ( yyval . c_string ) , \"b\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_STRING : strlcpy ( ( yyval . c_string ) , \"s\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_REGEXP : strlcpy ( ( yyval . c_string ) , \"r\" , MAX_FUNCTION_ARGS ) ; break ; } ERROR_IF ( ( yyval . c_string ) == NULL ) ; } # line 2369 \"grammar.c\" break ; case 52 : # line 832 \"grammar.y\" { if ( strlen ( ( yyvsp [ - 2 ] . c_string ) ) == MAX_FUNCTION_ARGS ) { compiler -> last_result = ERROR_TOO_MANY_ARGUMENTS ; } else { switch ( ( yyvsp [ 0 ] . expression ) . type ) { case EXPRESSION_TYPE_INTEGER : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"i\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_FLOAT : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"f\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_BOOLEAN : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"b\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_STRING : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"s\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_REGEXP : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"r\" , MAX_FUNCTION_ARGS ) ; break ; } } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . c_string ) = ( yyvsp [ - 2 ] . c_string ) ; } # line 2405 \"grammar.c\" break ; case 53 : # line 868 \"grammar.y\" { SIZED_STRING * sized_string = ( yyvsp [ 0 ] . sized_string ) ; RE * re ; RE_ERROR error ; int re_flags = 0 ; if ( sized_string -> flags & SIZED_STRING_FLAGS_NO_CASE ) re_flags |= RE_FLAGS_NO_CASE ; if ( sized_string -> flags & SIZED_STRING_FLAGS_DOT_ALL ) re_flags |= RE_FLAGS_DOT_ALL ; compiler -> last_result = yr_re_compile ( sized_string -> c_string , re_flags , compiler -> re_code_arena , & re , & error ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; if ( compiler -> last_result == ERROR_INVALID_REGULAR_EXPRESSION ) yr_compiler_set_error_extra_info ( compiler , error . message ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_PUSH , re -> root_node -> forward_code , NULL , NULL ) ; yr_re_destroy ( re ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_REGEXP ; } # line 2451 \"grammar.c\" break ; case 54 : # line 914 \"grammar.y\" { if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_STRING ) { if ( ( yyvsp [ 0 ] . expression ) . value . sized_string != NULL ) { yywarning ( yyscanner , \"Using<S2SV_blank>literal<S2SV_blank>string<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>in<S2SV_blank>a<S2SV_blank>boolean<S2SV_blank>operation.\" , ( yyvsp [ 0 ] . expression ) . value . sized_string -> c_string ) ; } compiler -> last_result = yr_parser_emit ( yyscanner , OP_STR_TO_BOOL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2474 \"grammar.c\" break ; case 55 : # line 936 \"grammar.y\" { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2487 \"grammar.c\" break ; case 56 : # line 945 \"grammar.y\" { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 0 , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2500 \"grammar.c\" break ; case 57 : # line 954 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_STRING , \"matches\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_REGEXP , \"matches\" ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit ( yyscanner , OP_MATCHES , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2519 \"grammar.c\" break ; case 58 : # line 969 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_STRING , \"contains\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_STRING , \"contains\" ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_CONTAINS , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2535 \"grammar.c\" break ; case 59 : # line 981 \"grammar.y\" { int result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ 0 ] . c_string ) , OP_FOUND , UNDEFINED ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2553 \"grammar.c\" break ; case 60 : # line 995 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"at\" ) ; compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ - 2 ] . c_string ) , OP_FOUND_AT , ( yyvsp [ 0 ] . expression ) . value . integer ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2570 \"grammar.c\" break ; case 61 : # line 1008 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ - 2 ] . c_string ) , OP_FOUND_IN , UNDEFINED ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2585 \"grammar.c\" break ; case 62 : # line 1019 \"grammar.y\" { <S2SV_StartBug> int var_index ; <S2SV_EndBug> if ( compiler -> loop_depth == MAX_LOOP_NESTING ) compiler -> last_result = ERROR_LOOP_NESTING_LIMIT_EXCEEDED ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; var_index = yr_parser_lookup_loop_variable ( yyscanner , ( yyvsp [ - 1 ] . c_string ) ) ; if ( var_index >= 0 ) { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ - 1 ] . c_string ) ) ; compiler -> last_result = ERROR_DUPLICATED_LOOP_IDENTIFIER ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 2619 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 63 : <S2SV_EndBug> # line 1049 \"grammar.y\" { int mem_offset = LOOP_LOCAL_VARS * compiler -> loop_depth ; uint8_t * addr ; yr_parser_emit_with_arg ( yyscanner , OP_CLEAR_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_CLEAR_M , mem_offset + 2 , NULL , NULL ) ; if ( ( yyvsp [ - 1 ] . integer ) == INTEGER_SET_ENUMERATION ) { yr_parser_emit_with_arg ( yyscanner , OP_POP_M , mem_offset , & addr , NULL ) ; } else { yr_parser_emit_with_arg ( yyscanner , OP_POP_M , mem_offset + 3 , & addr , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_POP_M , mem_offset , NULL , NULL ) ; } compiler -> loop_address [ compiler -> loop_depth ] = addr ; compiler -> loop_identifier [ compiler -> loop_depth ] = ( yyvsp [ - 4 ] . c_string ) ; compiler -> loop_depth ++ ; } <S2SV_StartBug> # line 2658 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 64 : <S2SV_EndBug> # line 1084 \"grammar.y\" { int mem_offset ; compiler -> loop_depth -- ; mem_offset = LOOP_LOCAL_VARS * compiler -> loop_depth ; yr_parser_emit_with_arg ( yyscanner , OP_ADD_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_INCR_M , mem_offset + 2 , NULL , NULL ) ; if ( ( yyvsp [ - 5 ] . integer ) == INTEGER_SET_ENUMERATION ) { yr_parser_emit_with_arg_reloc ( yyscanner , OP_JNUNDEF , compiler -> loop_address [ compiler -> loop_depth ] , NULL , NULL ) ; } else { yr_parser_emit_with_arg ( yyscanner , OP_INCR_M , mem_offset , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , mem_offset , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , mem_offset + 3 , NULL , NULL ) ; yr_parser_emit_with_arg_reloc ( yyscanner , OP_JLE , compiler -> loop_address [ compiler -> loop_depth ] , NULL , NULL ) ; yr_parser_emit ( yyscanner , OP_POP , NULL ) ; yr_parser_emit ( yyscanner , OP_POP , NULL ) ; } yr_parser_emit ( yyscanner , OP_POP , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_SWAPUNDEF , mem_offset + 2 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit ( yyscanner , OP_INT_LE , NULL ) ; compiler -> loop_identifier [ compiler -> loop_depth ] = NULL ; yr_free ( ( yyvsp [ - 8 ] . c_string ) ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2741 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 65 : <S2SV_EndBug> # line 1163 \"grammar.y\" { int mem_offset = LOOP_LOCAL_VARS * compiler -> loop_depth ; uint8_t * addr ; if ( compiler -> loop_depth == MAX_LOOP_NESTING ) compiler -> last_result = ERROR_LOOP_NESTING_LIMIT_EXCEEDED ; if ( compiler -> loop_for_of_mem_offset != - 1 ) compiler -> last_result = ERROR_NESTED_FOR_OF_LOOP ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; yr_parser_emit_with_arg ( yyscanner , OP_CLEAR_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_CLEAR_M , mem_offset + 2 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_POP_M , mem_offset , & addr , NULL ) ; compiler -> loop_for_of_mem_offset = mem_offset ; compiler -> loop_address [ compiler -> loop_depth ] = addr ; compiler -> loop_identifier [ compiler -> loop_depth ] = NULL ; compiler -> loop_depth ++ ; } <S2SV_StartBug> # line 2775 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 66 : <S2SV_EndBug> # line 1193 \"grammar.y\" { int mem_offset ; compiler -> loop_depth -- ; compiler -> loop_for_of_mem_offset = - 1 ; mem_offset = LOOP_LOCAL_VARS * compiler -> loop_depth ; yr_parser_emit_with_arg ( yyscanner , OP_ADD_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_INCR_M , mem_offset + 2 , NULL , NULL ) ; yr_parser_emit_with_arg_reloc ( yyscanner , OP_JNUNDEF , compiler -> loop_address [ compiler -> loop_depth ] , NULL , NULL ) ; yr_parser_emit ( yyscanner , OP_POP , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_SWAPUNDEF , mem_offset + 2 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit ( yyscanner , OP_INT_LE , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2828 \"grammar.c\" <S2SV_EndBug> break ; case 67 : # line 1242 \"grammar.y\" { yr_parser_emit ( yyscanner , OP_OF , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2838 \"grammar.c\" break ; case 68 : <S2SV_StartBug> # line 1248 \"grammar.y\" <S2SV_EndBug> { <S2SV_StartBug> yr_parser_emit ( yyscanner , OP_NOT , NULL ) ; <S2SV_EndBug> ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2848 \"grammar.c\" <S2SV_EndBug> break ; case 69 : <S2SV_StartBug> # line 1254 \"grammar.y\" <S2SV_EndBug> { YR_FIXUP * fixup ; void * jmp_destination_addr ; compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_JFALSE , 0 , NULL , & jmp_destination_addr ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup = ( YR_FIXUP * ) yr_malloc ( sizeof ( YR_FIXUP ) ) ; if ( fixup == NULL ) compiler -> last_error = ERROR_INSUFFICIENT_MEMORY ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup -> address = jmp_destination_addr ; fixup -> next = compiler -> fixup_stack_head ; compiler -> fixup_stack_head = fixup ; } <S2SV_StartBug> # line 2878 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 70 : <S2SV_EndBug> # line 1280 \"grammar.y\" { YR_FIXUP * fixup ; uint8_t * and_addr ; compiler -> last_result = yr_arena_reserve_memory ( compiler -> code_arena , 2 ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_AND , & and_addr ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup = compiler -> fixup_stack_head ; * ( void * * ) ( fixup -> address ) = ( void * ) ( and_addr + 1 ) ; compiler -> fixup_stack_head = fixup -> next ; yr_free ( fixup ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2918 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 71 : <S2SV_EndBug> # line 1316 \"grammar.y\" { YR_FIXUP * fixup ; void * jmp_destination_addr ; compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_JTRUE , 0 , NULL , & jmp_destination_addr ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup = ( YR_FIXUP * ) yr_malloc ( sizeof ( YR_FIXUP ) ) ; if ( fixup == NULL ) compiler -> last_error = ERROR_INSUFFICIENT_MEMORY ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup -> address = jmp_destination_addr ; fixup -> next = compiler -> fixup_stack_head ; compiler -> fixup_stack_head = fixup ; } <S2SV_StartBug> # line 2947 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 72 : <S2SV_EndBug> # line 1341 \"grammar.y\" { YR_FIXUP * fixup ; uint8_t * or_addr ; compiler -> last_result = yr_arena_reserve_memory ( compiler -> code_arena , 2 ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_OR , & or_addr ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup = compiler -> fixup_stack_head ; * ( void * * ) ( fixup -> address ) = ( void * ) ( or_addr + 1 ) ; compiler -> fixup_stack_head = fixup -> next ; yr_free ( fixup ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2987 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 73 : <S2SV_EndBug> # line 1377 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"<\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3000 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 74 : <S2SV_EndBug> # line 1386 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \">\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3013 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 75 : <S2SV_EndBug> # line 1395 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"<=\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3026 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 76 : <S2SV_EndBug> # line 1404 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \">=\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3039 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 77 : <S2SV_EndBug> # line 1413 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"==\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3052 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 78 : <S2SV_EndBug> # line 1422 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"!=\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3065 \"grammar.c\" <S2SV_EndBug> break ; case 79 : # line 1431 \"grammar.y\" { ( yyval . expression ) = ( yyvsp [ 0 ] . expression ) ; } # line 3073 \"grammar.c\" break ; case 80 : <S2SV_StartBug> # line 1435 \"grammar.y\" <S2SV_EndBug> { ( yyval . expression ) = ( yyvsp [ - 1 ] . expression ) ; } <S2SV_StartBug> # line 3081 \"grammar.c\" <S2SV_EndBug> break ; case 81 : # line 1442 \"grammar.y\" { ( yyval . integer ) = INTEGER_SET_ENUMERATION ; } # line 3087 \"grammar.c\" break ; case 82 : <S2SV_StartBug> # line 1443 \"grammar.y\" <S2SV_EndBug> <S2SV_StartBug> { ( yyval . integer ) = INTEGER_SET_RANGE ; } <S2SV_EndBug> # line 3093 \"grammar.c\" break ; case 83 : <S2SV_StartBug> # line 1449 \"grammar.y\" <S2SV_EndBug> { if ( ( yyvsp [ - 3 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"wrong<S2SV_blank>type<S2SV_blank>for<S2SV_blank>range\\'s<S2SV_blank>lower<S2SV_blank>bound\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } if ( ( yyvsp [ - 1 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"wrong<S2SV_blank>type<S2SV_blank>for<S2SV_blank>range\\'s<S2SV_blank>upper<S2SV_blank>bound\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3115 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 84 : <S2SV_EndBug> # line 1471 \"grammar.y\" { if ( ( yyvsp [ 0 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"wrong<S2SV_blank>type<S2SV_blank>for<S2SV_blank>enumeration<S2SV_blank>item\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3131 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 85 : <S2SV_EndBug> # line 1483 \"grammar.y\" { if ( ( yyvsp [ 0 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"wrong<S2SV_blank>type<S2SV_blank>for<S2SV_blank>enumeration<S2SV_blank>item\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3146 \"grammar.c\" <S2SV_EndBug> break ; case 86 : # line 1498 \"grammar.y\" { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; } # line 3155 \"grammar.c\" break ; <S2SV_StartBug> case 88 : <S2SV_EndBug> # line 1504 \"grammar.y\" { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; yr_parser_emit_pushes_for_strings ( yyscanner , \"$*\" ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3166 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 91 : <S2SV_EndBug> # line 1521 \"grammar.y\" { yr_parser_emit_pushes_for_strings ( yyscanner , ( yyvsp [ 0 ] . c_string ) ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3177 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 92 : <S2SV_EndBug> # line 1528 \"grammar.y\" { yr_parser_emit_pushes_for_strings ( yyscanner , ( yyvsp [ 0 ] . c_string ) ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3188 \"grammar.c\" <S2SV_EndBug> break ; case 94 : # line 1540 \"grammar.y\" { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; } # line 3196 \"grammar.c\" break ; case 95 : <S2SV_StartBug> # line 1544 \"grammar.y\" <S2SV_EndBug> { <S2SV_StartBug> yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; <S2SV_EndBug> } # line 3204 \"grammar.c\" break ; case 96 : <S2SV_StartBug> # line 1552 \"grammar.y\" <S2SV_EndBug> { ( yyval . expression ) = ( yyvsp [ - 1 ] . expression ) ; } <S2SV_StartBug> # line 3212 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 97 : <S2SV_EndBug> # line 1556 \"grammar.y\" { compiler -> last_result = yr_parser_emit ( yyscanner , OP_FILESIZE , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3226 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 98 : <S2SV_EndBug> # line 1566 \"grammar.y\" { yywarning ( yyscanner , \"Using<S2SV_blank>deprecated<S2SV_blank>\\\\\"entrypoint\\\\\"<S2SV_blank>keyword.<S2SV_blank>Use<S2SV_blank>the<S2SV_blank>\\\\\"entry_point\\\\\"<S2SV_blank>\" \"function<S2SV_blank>from<S2SV_blank>PE<S2SV_blank>module<S2SV_blank>instead.\" ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_ENTRYPOINT , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3244 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 99 : <S2SV_EndBug> # line 1580 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 1 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"intXXXX<S2SV_blank>or<S2SV_blank>uintXXXX\" ) ; compiler -> last_result = yr_parser_emit ( yyscanner , ( uint8_t ) ( OP_READ_INT + ( yyvsp [ - 3 ] . integer ) ) , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3264 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 100 : <S2SV_EndBug> # line 1596 \"grammar.y\" { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , ( yyvsp [ 0 ] . integer ) , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = ( yyvsp [ 0 ] . integer ) ; } <S2SV_StartBug> # line 3278 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 101 : <S2SV_EndBug> # line 1606 \"grammar.y\" { compiler -> last_result = yr_parser_emit_with_arg_double ( yyscanner , OP_PUSH , ( yyvsp [ 0 ] . double_ ) , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } <S2SV_StartBug> # line 3291 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 102 : <S2SV_EndBug> # line 1615 \"grammar.y\" { SIZED_STRING * sized_string ; compiler -> last_result = yr_arena_write_data ( compiler -> sz_arena , ( yyvsp [ 0 ] . sized_string ) , ( yyvsp [ 0 ] . sized_string ) -> length + sizeof ( SIZED_STRING ) , ( void * * ) & sized_string ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_PUSH , sized_string , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_STRING ; ( yyval . expression ) . value . sized_string = sized_string ; } <S2SV_StartBug> # line 3320 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 103 : <S2SV_EndBug> # line 1640 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ 0 ] . c_string ) , OP_COUNT , UNDEFINED ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3336 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 104 : <S2SV_EndBug> # line 1652 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ - 3 ] . c_string ) , OP_OFFSET , UNDEFINED ) ; yr_free ( ( yyvsp [ - 3 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3352 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 105 : <S2SV_EndBug> # line 1664 \"grammar.y\" { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ 0 ] . c_string ) , OP_OFFSET , UNDEFINED ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3372 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 106 : <S2SV_EndBug> # line 1680 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ - 3 ] . c_string ) , OP_LENGTH , UNDEFINED ) ; yr_free ( ( yyvsp [ - 3 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3388 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 107 : <S2SV_EndBug> # line 1692 \"grammar.y\" { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ 0 ] . c_string ) , OP_LENGTH , UNDEFINED ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3408 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 108 : <S2SV_EndBug> # line 1708 \"grammar.y\" { if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } else if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_BOOLEAN ) { ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; ( yyval . expression ) . value . integer = UNDEFINED ; } else if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_OBJECT ) { compiler -> last_result = yr_parser_emit ( yyscanner , OP_OBJ_VALUE , NULL ) ; switch ( ( yyvsp [ 0 ] . expression ) . value . object -> type ) { case OBJECT_TYPE_INTEGER : ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; break ; case OBJECT_TYPE_FLOAT : ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; break ; case OBJECT_TYPE_STRING : ( yyval . expression ) . type = EXPRESSION_TYPE_STRING ; ( yyval . expression ) . value . sized_string = NULL ; break ; default : yr_compiler_set_error_extra_info_fmt ( compiler , \"wrong<S2SV_blank>usage<S2SV_blank>of<S2SV_blank>identifier<S2SV_blank>\\\\\"%s\\\\\"\" , ( yyvsp [ 0 ] . expression ) . identifier ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } } else { assert ( FALSE ) ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3457 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 109 : <S2SV_EndBug> # line 1753 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER | EXPRESSION_TYPE_FLOAT , \"-\" ) ; if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = ( ( yyvsp [ 0 ] . expression ) . value . integer == UNDEFINED ) ? UNDEFINED : - ( ( yyvsp [ 0 ] . expression ) . value . integer ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_INT_MINUS , NULL ) ; } else if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_FLOAT ) { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_DBL_MINUS , NULL ) ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3480 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 110 : <S2SV_EndBug> # line 1772 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"+\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_INTEGER && ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . value . integer = OPERATION ( + , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } } <S2SV_StartBug> # line 3502 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 111 : <S2SV_EndBug> # line 1790 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"-\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_INTEGER && ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . value . integer = OPERATION ( - , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } } <S2SV_StartBug> # line 3524 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 112 : <S2SV_EndBug> # line 1808 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"*\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_INTEGER && ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . value . integer = OPERATION ( * , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } } <S2SV_StartBug> # line 3546 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 113 : <S2SV_EndBug> # line 1826 \"grammar.y\" { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"\\\\\\\\\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_INTEGER && ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { if ( ( yyvsp [ 0 ] . expression ) . value . integer != 0 ) { ( yyval . expression ) . value . integer = OPERATION ( / , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { compiler -> last_result = ERROR_DIVISION_BY_ZERO ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } } else { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } } <S2SV_StartBug> # line 3576 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 114 : <S2SV_EndBug> # line 1852 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"%\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"%\" ) ; yr_parser_emit ( yyscanner , OP_MOD , NULL ) ; if ( ( yyvsp [ 0 ] . expression ) . value . integer != 0 ) { ( yyval . expression ) . value . integer = OPERATION ( % , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { compiler -> last_result = ERROR_DIVISION_BY_ZERO ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } } <S2SV_StartBug> # line 3598 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 115 : <S2SV_EndBug> # line 1870 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"^\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"^\" ) ; yr_parser_emit ( yyscanner , OP_BITWISE_XOR , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( ^ , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3612 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 116 : <S2SV_EndBug> # line 1880 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"^\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"^\" ) ; yr_parser_emit ( yyscanner , OP_BITWISE_AND , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( & , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3626 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 117 : <S2SV_EndBug> # line 1890 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"|\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"|\" ) ; yr_parser_emit ( yyscanner , OP_BITWISE_OR , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( | , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3640 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 118 : <S2SV_EndBug> # line 1900 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"~\" ) ; yr_parser_emit ( yyscanner , OP_BITWISE_NOT , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = ( ( yyvsp [ 0 ] . expression ) . value . integer == UNDEFINED ) ? UNDEFINED : ~ ( ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3654 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 119 : <S2SV_EndBug> # line 1910 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"<<\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"<<\" ) ; yr_parser_emit ( yyscanner , OP_SHL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( << , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3668 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 120 : <S2SV_EndBug> # line 1920 \"grammar.y\" { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \">>\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \">>\" ) ; yr_parser_emit ( yyscanner , OP_SHR , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( >> , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3682 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> case 121 : <S2SV_EndBug> # line 1930 \"grammar.y\" { ( yyval . expression ) = ( yyvsp [ 0 ] . expression ) ; } <S2SV_StartBug> # line 3690 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> # line 3694 \"grammar.c\" <S2SV_EndBug> default : break ; } YY_SYMBOL_PRINT ( \"-><S2SV_blank>$$<S2SV_blank>=\" , yyr1 [ yyn ] , & yyval , & yyloc ) ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; * ++ yyvsp = yyval ; yyn = yyr1 [ yyn ] ; yystate = yypgoto [ yyn - YYNTOKENS ] + * yyssp ; if ( 0 <= yystate && yystate <= YYLAST && yycheck [ yystate ] == * yyssp ) yystate = yytable [ yystate ] ; else yystate = yydefgoto [ yyn - YYNTOKENS ] ; goto yynewstate ; yyerrlab : yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE ( yychar ) ; if ( ! yyerrstatus ) { ++ yynerrs ; # if ! YYERROR_VERBOSE yyerror ( yyscanner , compiler , YY_ ( \"syntax<S2SV_blank>error\" ) ) ; # else # define YYSYNTAX_ERROR yysyntax_error ( & yymsg_alloc , & yymsg , yyssp , yytoken ) { char const * yymsgp = YY_ ( \"syntax<S2SV_blank>error\" ) ; int yysyntax_error_status ; yysyntax_error_status = YYSYNTAX_ERROR ; if ( yysyntax_error_status == 0 ) yymsgp = yymsg ; else if ( yysyntax_error_status == 1 ) { if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; yymsg = ( char * ) YYSTACK_ALLOC ( yymsg_alloc ) ; if ( ! yymsg ) { yymsg = yymsgbuf ; yymsg_alloc = sizeof yymsgbuf ; yysyntax_error_status = 2 ; } else { yysyntax_error_status = YYSYNTAX_ERROR ; yymsgp = yymsg ; } } yyerror ( yyscanner , compiler , yymsgp ) ; if ( yysyntax_error_status == 2 ) goto yyexhaustedlab ; } # undef YYSYNTAX_ERROR # endif } if ( yyerrstatus == 3 ) { if ( yychar <= YYEOF ) { if ( yychar == YYEOF ) YYABORT ; } else { yydestruct ( \"Error:<S2SV_blank>discarding\" , yytoken , & yylval , yyscanner , compiler ) ; yychar = YYEMPTY ; } } goto yyerrlab1 ; yyerrorlab : if ( 0 ) goto yyerrorlab ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; yystate = * yyssp ; goto yyerrlab1 ; yyerrlab1 : yyerrstatus = 3 ; for ( ; ; ) { yyn = yypact [ yystate ] ; if ( ! yypact_value_is_default ( yyn ) ) { yyn += YYTERROR ; if ( 0 <= yyn && yyn <= YYLAST && yycheck [ yyn ] == YYTERROR ) { yyn = yytable [ yyn ] ; if ( 0 < yyn ) break ; } } if ( yyssp == yyss ) YYABORT ; yydestruct ( \"Error:<S2SV_blank>popping\" , yystos [ yystate ] , yyvsp , yyscanner , compiler ) ; YYPOPSTACK ( 1 ) ; yystate = * yyssp ; YY_STACK_PRINT ( yyss , yyssp ) ; } YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN * ++ yyvsp = yylval ; YY_IGNORE_MAYBE_UNINITIALIZED_END YY_SYMBOL_PRINT ( \"Shifting\" , yystos [ yyn ] , yyvsp , yylsp ) ; yystate = yyn ; goto yynewstate ; yyacceptlab : yyresult = 0 ; goto yyreturn ; yyabortlab : yyresult = 1 ; goto yyreturn ; # if ! defined yyoverflow || YYERROR_VERBOSE yyexhaustedlab : yyerror ( yyscanner , compiler , YY_ ( \"memory<S2SV_blank>exhausted\" ) ) ; yyresult = 2 ; # endif yyreturn : if ( yychar != YYEMPTY ) { yytoken = YYTRANSLATE ( yychar ) ; yydestruct ( \"Cleanup:<S2SV_blank>discarding<S2SV_blank>lookahead\" , yytoken , & yylval , yyscanner , compiler ) ; } YYPOPSTACK ( yylen ) ; YY_STACK_PRINT ( yyss , yyssp ) ; while ( yyssp != yyss ) { yydestruct ( \"Cleanup:<S2SV_blank>popping\" , yystos [ * yyssp ] , yyvsp , yyscanner , compiler ) ; YYPOPSTACK ( 1 ) ; } # ifndef yyoverflow if ( yyss != yyssa ) YYSTACK_FREE ( yyss ) ; # endif # if YYERROR_VERBOSE if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; # endif return yyresult ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1019 \"grammar.y\" { compiler -> loop_depth -- ; compiler -> loop_identifier [ compiler -> loop_depth ] = NULL ; } # line 2594 \"grammar.c\" break ; case 63 : # line 1024 \"grammar.y\" { <S2SV_ModStart> } # line 2628 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 64 : # line 1054 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2667 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 65 : # line 1089 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2750 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 66 : # line 1168 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2784 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 67 : # line 1198 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2837 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1247 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit <S2SV_ModStart> ( yyscanner , OP_OF <S2SV_ModEnd> , NULL ) <S2SV_ModStart> } # line 2847 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1253 \"grammar.y\" { yr_parser_emit ( yyscanner , OP_NOT , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } # line 2857 \"grammar.c\" break ; case 70 : # line 1259 <S2SV_ModEnd> \"grammar.y\" { YR_FIXUP <S2SV_ModStart> } # line 2887 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 71 : # line 1285 <S2SV_ModEnd> \"grammar.y\" { YR_FIXUP <S2SV_ModStart> } # line 2927 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 72 : # line 1321 <S2SV_ModEnd> \"grammar.y\" { YR_FIXUP <S2SV_ModStart> } # line 2956 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 73 : # line 1346 <S2SV_ModEnd> \"grammar.y\" { YR_FIXUP <S2SV_ModStart> } # line 2996 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 74 : # line 1382 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3009 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 75 : # line 1391 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3022 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 76 : # line 1400 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3035 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 77 : # line 1409 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3048 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 78 : # line 1418 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3061 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 79 : # line 1427 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3074 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1436 \"grammar.y\" { ( yyval . expression ) = ( yyvsp [ 0 ] . expression ) ; } # line 3082 \"grammar.c\" break ; case 81 : # line 1440 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3090 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1447 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> integer ) = INTEGER_SET_ENUMERATION ; } # line 3096 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1448 \"grammar.y\" { ( yyval . integer ) = INTEGER_SET_RANGE ; } # line 3102 \"grammar.c\" break ; case 84 : # line 1454 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line 3124 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 85 : # line 1476 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line 3140 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 86 : # line 1488 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line <S2SV_ModEnd> 3155 \"grammar.c\" break <S2SV_ModStart> break ; case 87 : # line 1503 \"grammar.y\" { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; } # line 3164 \"grammar.c\" break ; case 89 : # line 1509 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_with_arg <S2SV_ModStart> } # line 3175 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 92 : # line 1526 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_pushes_for_strings <S2SV_ModStart> } # line 3186 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 93 : # line 1533 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_pushes_for_strings <S2SV_ModStart> } # line 3197 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1545 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_with_arg <S2SV_ModStart> , OP_PUSH , UNDEFINED , NULL , NULL ) ; } # line 3205 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1549 \"grammar.y\" { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; } # line 3213 \"grammar.c\" break ; case 97 : # line 1557 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3221 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 98 : # line 1561 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3235 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 99 : # line 1571 <S2SV_ModEnd> \"grammar.y\" { yywarning <S2SV_ModStart> } # line 3253 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 100 : # line 1585 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3273 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 101 : # line 1601 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3287 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 102 : # line 1611 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3300 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 103 : # line 1620 <S2SV_ModEnd> \"grammar.y\" { SIZED_STRING <S2SV_ModStart> } # line 3329 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 104 : # line 1645 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3345 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 105 : # line 1657 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3361 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 106 : # line 1669 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3381 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 107 : # line 1685 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3397 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 108 : # line 1697 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3417 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 109 : # line 1713 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line 3466 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 110 : # line 1758 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3489 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 111 : # line 1777 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3511 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 112 : # line 1795 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3533 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 113 : # line 1813 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3555 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 114 : # line 1831 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3585 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 115 : # line 1857 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3607 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 116 : # line 1875 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3621 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 117 : # line 1885 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3635 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 118 : # line 1895 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3649 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 119 : # line 1905 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3663 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 120 : # line 1915 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3677 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 121 : # line 1925 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3691 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> break ; case 122 : # line 1935 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3699 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> ; # line 3703 <S2SV_ModEnd> \"grammar.c\" default :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2491\n\n```\nCWE-400 static void call_bind_status ( struct rpc_task * task ) { int status = - EIO ; if ( task -> tk_status >= 0 ) { dprint_status ( task ) ; task -> tk_status = 0 ; task -> tk_action = call_connect ; return ; } switch ( task -> tk_status ) { case - ENOMEM : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>rpcbind<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" , task -> tk_pid ) ; rpc_delay ( task , HZ >> 2 ) ; goto retry_timeout ; case - EACCES : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>remote<S2SV_blank>rpcbind:<S2SV_blank>RPC<S2SV_blank>program/version<S2SV_blank>\" \"unavailable\\\\n\" , task -> tk_pid ) ; if ( task -> tk_msg . rpc_proc -> p_proc == 0 ) { status = - EOPNOTSUPP ; break ; } <S2SV_StartBug> rpc_delay ( task , 3 * HZ ) ; <S2SV_EndBug> goto retry_timeout ; case - ETIMEDOUT : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>rpcbind<S2SV_blank>request<S2SV_blank>timed<S2SV_blank>out\\\\n\" , task -> tk_pid ) ; goto retry_timeout ; case - EPFNOSUPPORT : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>unrecognized<S2SV_blank>remote<S2SV_blank>rpcbind<S2SV_blank>service\\\\n\" , task -> tk_pid ) ; break ; case - EPROTONOSUPPORT : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>remote<S2SV_blank>rpcbind<S2SV_blank>version<S2SV_blank>unavailable,<S2SV_blank>retrying\\\\n\" , task -> tk_pid ) ; task -> tk_status = 0 ; task -> tk_action = call_bind ; return ; case - ECONNREFUSED : case - ECONNRESET : case - ENOTCONN : case - EHOSTDOWN : case - EHOSTUNREACH : case - ENETUNREACH : case - EPIPE : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>remote<S2SV_blank>rpcbind<S2SV_blank>unreachable:<S2SV_blank>%d\\\\n\" , task -> tk_pid , task -> tk_status ) ; if ( ! RPC_IS_SOFTCONN ( task ) ) { rpc_delay ( task , 5 * HZ ) ; goto retry_timeout ; } status = task -> tk_status ; break ; default : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>unrecognized<S2SV_blank>rpcbind<S2SV_blank>error<S2SV_blank>(%d)\\\\n\" , task -> tk_pid , - task -> tk_status ) ; } rpc_exit ( task , status ) ; return ; retry_timeout : task -> tk_action = call_timeout ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } if ( task -> tk_rebind_retry == 0 ) break ; task -> tk_rebind_retry -- ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21261\n\n```\nCWE-74 static gboolean handle_spawn ( PortalFlatpak * object , GDBusMethodInvocation * invocation , GUnixFDList * fd_list , const gchar * arg_cwd_path , const gchar * const * arg_argv , GVariant * arg_fds , GVariant * arg_envs , guint arg_flags , GVariant * arg_options ) { g_autoptr ( GError ) error = NULL ; ChildSetupData child_setup_data = { NULL } ; GPid pid ; PidData * pid_data ; InstanceIdReadData * instance_id_read_data = NULL ; gsize i , j , n_fds , n_envs ; const gint * fds = NULL ; gint fds_len = 0 ; g_autofree FdMapEntry * fd_map = NULL ; gchar * * env ; gint32 max_fd ; GKeyFile * app_info ; g_autoptr ( GPtrArray ) flatpak_argv = g_ptr_array_new_with_free_func ( g_free ) ; g_autofree char * app_id = NULL ; g_autofree char * branch = NULL ; g_autofree char * arch = NULL ; g_autofree char * app_commit = NULL ; g_autofree char * runtime_ref = NULL ; g_auto ( GStrv ) runtime_parts = NULL ; g_autofree char * runtime_commit = NULL ; g_autofree char * instance_path = NULL ; g_auto ( GStrv ) extra_args = NULL ; g_auto ( GStrv ) shares = NULL ; g_auto ( GStrv ) sockets = NULL ; g_auto ( GStrv ) devices = NULL ; g_auto ( GStrv ) sandbox_expose = NULL ; g_auto ( GStrv ) sandbox_expose_ro = NULL ; g_autoptr ( GVariant ) sandbox_expose_fd = NULL ; g_autoptr ( GVariant ) sandbox_expose_fd_ro = NULL ; g_autoptr ( GOutputStream ) instance_id_out_stream = NULL ; guint sandbox_flags = 0 ; gboolean sandboxed ; gboolean expose_pids ; gboolean share_pids ; gboolean notify_start ; <S2SV_StartBug> gboolean devel ; <S2SV_EndBug> <S2SV_StartBug> child_setup_data . instance_id_fd = - 1 ; <S2SV_EndBug> if ( fd_list != NULL ) fds = g_unix_fd_list_peek_fds ( fd_list , & fds_len ) ; app_info = g_object_get_data ( G_OBJECT ( invocation ) , \"app-info\" ) ; g_assert ( app_info != NULL ) ; app_id = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_APPLICATION , FLATPAK_METADATA_KEY_NAME , NULL ) ; g_assert ( app_id != NULL ) ; g_debug ( \"spawn()<S2SV_blank>called<S2SV_blank>from<S2SV_blank>app:<S2SV_blank>\\'%s\\'\" , app_id ) ; if ( * app_id == 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"org.freedesktop.portal.Flatpak.Spawn<S2SV_blank>only<S2SV_blank>works<S2SV_blank>in<S2SV_blank>a<S2SV_blank>flatpak\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( * arg_cwd_path == 0 ) arg_cwd_path = NULL ; if ( arg_argv == NULL || * arg_argv == NULL ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>command<S2SV_blank>given\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( ( arg_flags & ~ FLATPAK_SPAWN_FLAGS_ALL ) != 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Unsupported<S2SV_blank>flags<S2SV_blank>enabled:<S2SV_blank>0x%x\" , arg_flags & ~ FLATPAK_SPAWN_FLAGS_ALL ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } runtime_ref = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_APPLICATION , FLATPAK_METADATA_KEY_RUNTIME , NULL ) ; if ( runtime_ref == NULL ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>runtime<S2SV_blank>found\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } runtime_parts = g_strsplit ( runtime_ref , \"/\" , - 1 ) ; branch = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_BRANCH , NULL ) ; instance_path = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_INSTANCE_PATH , NULL ) ; arch = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_ARCH , NULL ) ; extra_args = g_key_file_get_string_list ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_EXTRA_ARGS , NULL , NULL ) ; app_commit = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_APP_COMMIT , NULL ) ; runtime_commit = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_RUNTIME_COMMIT , NULL ) ; shares = g_key_file_get_string_list ( app_info , FLATPAK_METADATA_GROUP_CONTEXT , FLATPAK_METADATA_KEY_SHARED , NULL , NULL ) ; sockets = g_key_file_get_string_list ( app_info , FLATPAK_METADATA_GROUP_CONTEXT , FLATPAK_METADATA_KEY_SOCKETS , NULL , NULL ) ; devices = g_key_file_get_string_list ( app_info , FLATPAK_METADATA_GROUP_CONTEXT , FLATPAK_METADATA_KEY_DEVICES , NULL , NULL ) ; devel = g_key_file_get_boolean ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_DEVEL , NULL ) ; g_variant_lookup ( arg_options , \"sandbox-expose\" , \"^as\" , & sandbox_expose ) ; g_variant_lookup ( arg_options , \"sandbox-expose-ro\" , \"^as\" , & sandbox_expose_ro ) ; g_variant_lookup ( arg_options , \"sandbox-flags\" , \"u\" , & sandbox_flags ) ; sandbox_expose_fd = g_variant_lookup_value ( arg_options , \"sandbox-expose-fd\" , G_VARIANT_TYPE ( \"ah\" ) ) ; sandbox_expose_fd_ro = g_variant_lookup_value ( arg_options , \"sandbox-expose-fd-ro\" , G_VARIANT_TYPE ( \"ah\" ) ) ; if ( ( sandbox_flags & ~ FLATPAK_SPAWN_SANDBOX_FLAGS_ALL ) != 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Unsupported<S2SV_blank>sandbox<S2SV_blank>flags<S2SV_blank>enabled:<S2SV_blank>0x%x\" , arg_flags & ~ FLATPAK_SPAWN_SANDBOX_FLAGS_ALL ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( instance_path == NULL && ( ( sandbox_expose != NULL && sandbox_expose [ 0 ] != NULL ) || ( sandbox_expose_ro != NULL && sandbox_expose_ro [ 0 ] != NULL ) ) ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Invalid<S2SV_blank>sandbox<S2SV_blank>expose,<S2SV_blank>caller<S2SV_blank>has<S2SV_blank>no<S2SV_blank>instance<S2SV_blank>path\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } for ( i = 0 ; sandbox_expose != NULL && sandbox_expose [ i ] != NULL ; i ++ ) { const char * expose = sandbox_expose [ i ] ; g_debug ( \"exposing<S2SV_blank>%s\" , expose ) ; if ( ! is_valid_expose ( expose , & error ) ) { g_dbus_method_invocation_return_gerror ( invocation , error ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } } for ( i = 0 ; sandbox_expose_ro != NULL && sandbox_expose_ro [ i ] != NULL ; i ++ ) { const char * expose = sandbox_expose_ro [ i ] ; g_debug ( \"exposing<S2SV_blank>%s\" , expose ) ; if ( ! is_valid_expose ( expose , & error ) ) { g_dbus_method_invocation_return_gerror ( invocation , error ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } } g_debug ( \"Running<S2SV_blank>spawn<S2SV_blank>command<S2SV_blank>%s\" , arg_argv [ 0 ] ) ; n_fds = 0 ; if ( fds != NULL ) n_fds = g_variant_n_children ( arg_fds ) ; fd_map = g_new0 ( FdMapEntry , n_fds ) ; child_setup_data . fd_map = fd_map ; child_setup_data . fd_map_len = n_fds ; max_fd = - 1 ; for ( i = 0 ; i < n_fds ; i ++ ) { gint32 handle , dest_fd ; int handle_fd ; g_variant_get_child ( arg_fds , i , \"{uh}\" , & dest_fd , & handle ) ; if ( handle >= fds_len || handle < 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>file<S2SV_blank>descriptor<S2SV_blank>for<S2SV_blank>handle<S2SV_blank>%d\" , handle ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } handle_fd = fds [ handle ] ; fd_map [ i ] . to = dest_fd ; fd_map [ i ] . from = handle_fd ; fd_map [ i ] . final = fd_map [ i ] . to ; if ( ( dest_fd == 0 || dest_fd == 1 || dest_fd == 2 ) && ! child_setup_data . set_tty && isatty ( handle_fd ) ) { child_setup_data . set_tty = TRUE ; child_setup_data . tty = handle_fd ; } max_fd = MAX ( max_fd , fd_map [ i ] . to ) ; max_fd = MAX ( max_fd , fd_map [ i ] . from ) ; } for ( i = 0 ; i < n_fds ; i ++ ) { int to_fd = fd_map [ i ] . to ; gboolean conflict = FALSE ; for ( j = i + 1 ; j < n_fds ; j ++ ) { int from_fd = fd_map [ j ] . from ; if ( from_fd == to_fd ) { conflict = TRUE ; break ; } } if ( conflict ) fd_map [ i ] . to = ++ max_fd ; } if ( arg_flags & FLATPAK_SPAWN_FLAGS_CLEAR_ENV ) { char * empty [ ] = { NULL } ; env = g_strdupv ( empty ) ; } else env = g_get_environ ( ) ; n_envs = g_variant_n_children ( arg_envs ) ; for ( i = 0 ; i < n_envs ; i ++ ) { const char * var = NULL ; const char * val = NULL ; g_variant_get_child ( arg_envs , i , \"{&s&s}\" , & var , & val ) ; env = g_environ_setenv ( env , var , val , TRUE ) ; } g_ptr_array_add ( flatpak_argv , g_strdup ( \"flatpak\" ) ) ; g_ptr_array_add ( flatpak_argv , g_strdup ( \"run\" ) ) ; sandboxed = ( arg_flags & FLATPAK_SPAWN_FLAGS_SANDBOX ) != 0 ; if ( sandboxed ) { g_ptr_array_add ( flatpak_argv , g_strdup ( \"--sandbox\" ) ) ; if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_SHARE_DISPLAY ) { if ( sockets != NULL && g_strv_contains ( ( const char * const * ) sockets , \"wayland\" ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--socket=wayland\" ) ) ; if ( sockets != NULL && g_strv_contains ( ( const char * const * ) sockets , \"fallback-x11\" ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--socket=fallback-x11\" ) ) ; if ( sockets != NULL && g_strv_contains ( ( const char * const * ) sockets , \"x11\" ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--socket=x11\" ) ) ; if ( shares != NULL && g_strv_contains ( ( const char * const * ) shares , \"ipc\" ) && sockets != NULL && ( g_strv_contains ( ( const char * const * ) sockets , \"fallback-x11\" ) || g_strv_contains ( ( const char * const * ) sockets , \"x11\" ) ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--share=ipc\" ) ) ; } if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_SHARE_SOUND ) { if ( sockets != NULL && g_strv_contains ( ( const char * const * ) sockets , \"pulseaudio\" ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--socket=pulseaudio\" ) ) ; } if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_SHARE_GPU ) { if ( devices != NULL && ( g_strv_contains ( ( const char * const * ) devices , \"dri\" ) || g_strv_contains ( ( const char * const * ) devices , \"all\" ) ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--device=dri\" ) ) ; } if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_ALLOW_DBUS ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--session-bus\" ) ) ; if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_ALLOW_A11Y ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--a11y-bus\" ) ) ; } else { for ( i = 0 ; extra_args != NULL && extra_args [ i ] != NULL ; i ++ ) <S2SV_StartBug> g_ptr_array_add ( flatpak_argv , g_strdup ( extra_args [ i ] ) ) ; <S2SV_EndBug> } expose_pids = ( arg_flags & FLATPAK_SPAWN_FLAGS_EXPOSE_PIDS ) != 0 ; share_pids = ( arg_flags & FLATPAK_SPAWN_FLAGS_SHARE_PIDS ) != 0 ; if ( expose_pids || share_pids ) { g_autofree char * instance_id = NULL ; int sender_pid1 = 0 ; if ( ! ( supports & FLATPAK_SPAWN_SUPPORT_FLAGS_EXPOSE_PIDS ) ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_NOT_SUPPORTED , \"Expose<S2SV_blank>pids<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>with<S2SV_blank>setuid<S2SV_blank>bwrap\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } instance_id = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_INSTANCE_ID , NULL ) ; if ( instance_id ) { g_autoptr ( FlatpakInstance ) instance = flatpak_instance_new_for_id ( instance_id ) ; sender_pid1 = flatpak_instance_get_child_pid ( instance ) ; } if ( sender_pid1 == 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Could<S2SV_blank>not<S2SV_blank>find<S2SV_blank>requesting<S2SV_blank>pid\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--parent-pid=%d\" , sender_pid1 ) ) ; if ( share_pids ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--parent-share-pids\" ) ) ; else g_ptr_array_add ( flatpak_argv , g_strdup ( \"--parent-expose-pids\" ) ) ; } notify_start = ( arg_flags & FLATPAK_SPAWN_FLAGS_NOTIFY_START ) != 0 ; if ( notify_start ) { int pipe_fds [ 2 ] ; if ( pipe ( pipe_fds ) == - 1 ) { int errsv = errno ; g_dbus_method_invocation_return_error ( invocation , G_IO_ERROR , g_io_error_from_errno ( errsv ) , \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>instance<S2SV_blank>ID<S2SV_blank>pipe:<S2SV_blank>%s\" , g_strerror ( errsv ) ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } GInputStream * in_stream = G_INPUT_STREAM ( g_unix_input_stream_new ( pipe_fds [ 0 ] , TRUE ) ) ; instance_id_out_stream = G_OUTPUT_STREAM ( g_unix_output_stream_new ( pipe_fds [ 1 ] , TRUE ) ) ; instance_id_read_data = g_new0 ( InstanceIdReadData , 1 ) ; g_input_stream_read_async ( in_stream , instance_id_read_data -> buffer , INSTANCE_ID_BUFFER_SIZE - 1 , G_PRIORITY_DEFAULT , NULL , instance_id_read_finish , instance_id_read_data ) ; g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--instance-id-fd=%d\" , pipe_fds [ 1 ] ) ) ; child_setup_data . instance_id_fd = pipe_fds [ 1 ] ; } if ( devel ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--devel\" ) ) ; if ( shares != NULL && g_strv_contains ( ( const char * const * ) shares , \"network\" ) && ! ( arg_flags & FLATPAK_SPAWN_FLAGS_NO_NETWORK ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--share=network\" ) ) ; else g_ptr_array_add ( flatpak_argv , g_strdup ( \"--unshare=network\" ) ) ; if ( instance_path ) { for ( i = 0 ; sandbox_expose != NULL && sandbox_expose [ i ] != NULL ; i ++ ) g_ptr_array_add ( flatpak_argv , filesystem_sandbox_arg ( instance_path , sandbox_expose [ i ] , FALSE ) ) ; for ( i = 0 ; sandbox_expose_ro != NULL && sandbox_expose_ro [ i ] != NULL ; i ++ ) g_ptr_array_add ( flatpak_argv , filesystem_sandbox_arg ( instance_path , sandbox_expose_ro [ i ] , TRUE ) ) ; } for ( i = 0 ; sandbox_expose_ro != NULL && sandbox_expose_ro [ i ] != NULL ; i ++ ) { const char * expose = sandbox_expose_ro [ i ] ; g_debug ( \"exposing<S2SV_blank>%s\" , expose ) ; } if ( sandbox_expose_fd != NULL ) { gsize len = g_variant_n_children ( sandbox_expose_fd ) ; for ( i = 0 ; i < len ; i ++ ) { gint32 handle ; g_variant_get_child ( sandbox_expose_fd , i , \"h\" , & handle ) ; if ( handle >= 0 && handle < fds_len ) { int handle_fd = fds [ handle ] ; g_autofree char * path = NULL ; gboolean writable = FALSE ; path = get_path_for_fd ( handle_fd , & writable , & error ) ; if ( path ) { g_ptr_array_add ( flatpak_argv , filesystem_arg ( path , ! writable ) ) ; } else { g_debug ( \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>path<S2SV_blank>for<S2SV_blank>sandbox-exposed<S2SV_blank>fd<S2SV_blank>%d,<S2SV_blank>ignoring:<S2SV_blank>%s\" , handle_fd , error -> message ) ; g_clear_error ( & error ) ; } } else { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>file<S2SV_blank>descriptor<S2SV_blank>for<S2SV_blank>handle<S2SV_blank>%d\" , handle ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } } } if ( sandbox_expose_fd_ro != NULL ) { gsize len = g_variant_n_children ( sandbox_expose_fd_ro ) ; for ( i = 0 ; i < len ; i ++ ) { gint32 handle ; g_variant_get_child ( sandbox_expose_fd_ro , i , \"h\" , & handle ) ; if ( handle >= 0 && handle < fds_len ) { int handle_fd = fds [ handle ] ; g_autofree char * path = NULL ; gboolean writable = FALSE ; path = get_path_for_fd ( handle_fd , & writable , & error ) ; if ( path ) { g_ptr_array_add ( flatpak_argv , filesystem_arg ( path , TRUE ) ) ; } else { g_debug ( \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>path<S2SV_blank>for<S2SV_blank>sandbox-exposed<S2SV_blank>fd<S2SV_blank>%d,<S2SV_blank>ignoring:<S2SV_blank>%s\" , handle_fd , error -> message ) ; g_clear_error ( & error ) ; } } else { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>file<S2SV_blank>descriptor<S2SV_blank>for<S2SV_blank>handle<S2SV_blank>%d\" , handle ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } } } g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--runtime=%s\" , runtime_parts [ 1 ] ) ) ; g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--runtime-version=%s\" , runtime_parts [ 3 ] ) ) ; if ( ( arg_flags & FLATPAK_SPAWN_FLAGS_LATEST_VERSION ) == 0 ) { if ( app_commit ) g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--commit=%s\" , app_commit ) ) ; if ( runtime_commit ) g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--runtime-commit=%s\" , runtime_commit ) ) ; } if ( arg_cwd_path != NULL ) g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--cwd=%s\" , arg_cwd_path ) ) ; if ( arg_argv [ 0 ] [ 0 ] != 0 ) g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--command=%s\" , arg_argv [ 0 ] ) ) ; g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"%s/%s/%s\" , app_id , arch ? arch : \"\" , branch ? branch : \"\" ) ) ; for ( i = 1 ; arg_argv [ i ] != NULL ; i ++ ) g_ptr_array_add ( flatpak_argv , g_strdup ( arg_argv [ i ] ) ) ; g_ptr_array_add ( flatpak_argv , NULL ) ; if ( opt_verbose ) { g_autoptr ( GString ) cmd = g_string_new ( \"\" ) ; for ( i = 0 ; flatpak_argv -> pdata [ i ] != NULL ; i ++ ) { if ( i > 0 ) g_string_append ( cmd , \"<S2SV_blank>\" ) ; g_string_append ( cmd , flatpak_argv -> pdata [ i ] ) ; } g_debug ( \"Starting:<S2SV_blank>%s\\\\n\" , cmd -> str ) ; } if ( ! g_spawn_async_with_pipes ( NULL , ( char * * ) flatpak_argv -> pdata , env , G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD | G_SPAWN_LEAVE_DESCRIPTORS_OPEN , child_setup_func , & child_setup_data , & pid , NULL , NULL , NULL , & error ) ) { gint code = G_DBUS_ERROR_FAILED ; if ( g_error_matches ( error , G_SPAWN_ERROR , G_SPAWN_ERROR_ACCES ) ) code = G_DBUS_ERROR_ACCESS_DENIED ; else if ( g_error_matches ( error , G_SPAWN_ERROR , G_SPAWN_ERROR_NOENT ) ) code = G_DBUS_ERROR_FILE_NOT_FOUND ; g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , code , \"Failed<S2SV_blank>to<S2SV_blank>start<S2SV_blank>command:<S2SV_blank>%s\" , error -> message ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( instance_id_read_data ) instance_id_read_data -> pid = pid ; pid_data = g_new0 ( PidData , 1 ) ; pid_data -> pid = pid ; pid_data -> client = g_strdup ( g_dbus_method_invocation_get_sender ( invocation ) ) ; pid_data -> watch_bus = ( arg_flags & FLATPAK_SPAWN_FLAGS_WATCH_BUS ) != 0 ; pid_data -> expose_or_share_pids = ( expose_pids || share_pids ) ; pid_data -> child_watch = g_child_watch_add_full ( G_PRIORITY_DEFAULT , pid , child_watch_died , pid_data , NULL ) ; g_debug ( \"Client<S2SV_blank>Pid<S2SV_blank>is<S2SV_blank>%d\" , pid_data -> pid ) ; g_hash_table_replace ( client_pid_data_hash , GUINT_TO_POINTER ( pid_data -> pid ) , pid_data ) ; portal_flatpak_complete_spawn ( object , invocation , NULL , pid ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gboolean devel ; g_autoptr ( GString ) env_string = g_string_new ( \"\" ) <S2SV_ModStart> child_setup_data . instance_id_fd = - 1 ; child_setup_data . env_fd <S2SV_ModStart> i ++ ) { if ( g_str_has_prefix ( extra_args [ i ] , \"--env=\" ) ) { const char * var_val = extra_args [ i ] + strlen ( \"--env=\" ) ; if ( var_val [ 0 ] == '\\\\0' || var_val [ 0 ] == '=' ) { g_warning ( \"Environment<S2SV_blank>variable<S2SV_blank>in<S2SV_blank>extra-args<S2SV_blank>has<S2SV_blank>empty<S2SV_blank>name\" ) ; continue ; } if ( strchr ( var_val , '=' ) == NULL ) { g_warning ( \"Environment<S2SV_blank>variable<S2SV_blank>in<S2SV_blank>extra-args<S2SV_blank>has<S2SV_blank>no<S2SV_blank>value\" ) ; continue ; } g_string_append ( env_string , var_val ) ; g_string_append_c ( env_string , '\\\\0' ) ; } else { <S2SV_ModStart> [ i ] ) ) ; } } } if ( env_string -> len > 0 ) { g_auto ( GLnxTmpfile ) env_tmpf = { 0 , } ; if ( ! flatpak_buffer_to_sealed_memfd_or_tmpfile ( & env_tmpf , \"environ\" , env_string -> str , env_string -> len , & error ) ) { g_dbus_method_invocation_return_gerror ( invocation , error ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } child_setup_data . env_fd = glnx_steal_fd ( & env_tmpf . fd ) ; g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--env-fd=%d\" , child_setup_data . env_fd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static char * decode_text_string ( const char * str , size_t str_len ) { int idx , is_hex , is_utf16be , ascii_idx ; char * ascii , hex_buf [ 5 ] = { 0 } ; is_hex = is_utf16be = idx = ascii_idx = 0 ; if ( str [ 0 ] == '(' ) { <S2SV_StartBug> ascii = malloc ( strlen ( str ) + 1 ) ; <S2SV_EndBug> strncpy ( ascii , str , strlen ( str ) + 1 ) ; return ascii ; } else if ( str [ 0 ] == '<' ) { is_hex = 1 ; ++ idx ; } if ( is_hex && ( str_len > 5 ) && ( str [ idx ] == 'F' ) && ( str [ idx + 1 ] == 'E' ) && ( str [ idx + 2 ] == 'F' ) && ( str [ idx + 3 ] == 'F' ) ) { is_utf16be = 1 ; idx += 4 ; } else return NULL ; <S2SV_StartBug> ascii = malloc ( str_len ) ; <S2SV_EndBug> for ( ; idx < str_len ; ++ idx ) { hex_buf [ 0 ] = str [ idx ++ ] ; hex_buf [ 1 ] = str [ idx ++ ] ; hex_buf [ 2 ] = str [ idx ++ ] ; hex_buf [ 3 ] = str [ idx ] ; ascii [ ascii_idx ++ ] = strtol ( hex_buf , NULL , 16 ) ; } return ascii ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ascii = safe_calloc <S2SV_ModEnd> ( strlen ( <S2SV_ModStart> ; ascii = safe_calloc <S2SV_ModEnd> ( str_len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18360\n\n```\nCWE-369 static void change_port_settings ( struct tty_struct * tty , struct edgeport_port * edge_port , struct ktermios * old_termios ) { struct device * dev = & edge_port -> port -> dev ; struct ump_uart_config * config ; int baud ; unsigned cflag ; int status ; int port_number = edge_port -> port -> port_number ; config = kmalloc ( sizeof ( * config ) , GFP_KERNEL ) ; if ( ! config ) { tty -> termios = * old_termios ; return ; } cflag = tty -> termios . c_cflag ; config -> wFlags = 0 ; config -> wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT ; config -> wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR ; config -> bUartMode = ( __u8 ) ( edge_port -> bUartMode ) ; switch ( cflag & CSIZE ) { case CS5 : config -> bDataBits = UMP_UART_CHAR5BITS ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>data<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>5\\\\n\" , __func__ ) ; break ; case CS6 : config -> bDataBits = UMP_UART_CHAR6BITS ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>data<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>6\\\\n\" , __func__ ) ; break ; case CS7 : config -> bDataBits = UMP_UART_CHAR7BITS ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>data<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>7\\\\n\" , __func__ ) ; break ; default : case CS8 : config -> bDataBits = UMP_UART_CHAR8BITS ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>data<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>8\\\\n\" , __func__ ) ; break ; } if ( cflag & PARENB ) { if ( cflag & PARODD ) { config -> wFlags |= UMP_MASK_UART_FLAGS_PARITY ; config -> bParity = UMP_UART_ODDPARITY ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>parity<S2SV_blank>=<S2SV_blank>odd\\\\n\" , __func__ ) ; } else { config -> wFlags |= UMP_MASK_UART_FLAGS_PARITY ; config -> bParity = UMP_UART_EVENPARITY ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>parity<S2SV_blank>=<S2SV_blank>even\\\\n\" , __func__ ) ; } } else { config -> bParity = UMP_UART_NOPARITY ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>parity<S2SV_blank>=<S2SV_blank>none\\\\n\" , __func__ ) ; } if ( cflag & CSTOPB ) { config -> bStopBits = UMP_UART_STOPBIT2 ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>stop<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>2\\\\n\" , __func__ ) ; } else { config -> bStopBits = UMP_UART_STOPBIT1 ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>stop<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>1\\\\n\" , __func__ ) ; } if ( cflag & CRTSCTS ) { config -> wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW ; config -> wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>RTS/CTS<S2SV_blank>is<S2SV_blank>enabled\\\\n\" , __func__ ) ; } else { dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>RTS/CTS<S2SV_blank>is<S2SV_blank>disabled\\\\n\" , __func__ ) ; restart_read ( edge_port ) ; } config -> cXon = START_CHAR ( tty ) ; config -> cXoff = STOP_CHAR ( tty ) ; if ( I_IXOFF ( tty ) ) { config -> wFlags |= UMP_MASK_UART_FLAGS_IN_X ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>INBOUND<S2SV_blank>XON/XOFF<S2SV_blank>is<S2SV_blank>enabled,<S2SV_blank>XON<S2SV_blank>=<S2SV_blank>%2x,<S2SV_blank>XOFF<S2SV_blank>=<S2SV_blank>%2x\\\\n\" , __func__ , config -> cXon , config -> cXoff ) ; } else dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>INBOUND<S2SV_blank>XON/XOFF<S2SV_blank>is<S2SV_blank>disabled\\\\n\" , __func__ ) ; if ( I_IXON ( tty ) ) { config -> wFlags |= UMP_MASK_UART_FLAGS_OUT_X ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>OUTBOUND<S2SV_blank>XON/XOFF<S2SV_blank>is<S2SV_blank>enabled,<S2SV_blank>XON<S2SV_blank>=<S2SV_blank>%2x,<S2SV_blank>XOFF<S2SV_blank>=<S2SV_blank>%2x\\\\n\" , __func__ , config -> cXon , config -> cXoff ) ; } else dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>OUTBOUND<S2SV_blank>XON/XOFF<S2SV_blank>is<S2SV_blank>disabled\\\\n\" , __func__ ) ; tty -> termios . c_cflag &= ~ CMSPAR ; baud = tty_get_baud_rate ( tty ) ; if ( ! baud ) { baud = 9600 ; <S2SV_StartBug> } else <S2SV_EndBug> <S2SV_StartBug> tty_encode_baud_rate ( tty , baud , baud ) ; <S2SV_EndBug> edge_port -> baud_rate = baud ; config -> wBaudRate = ( __u16 ) ( ( 461550L + baud / 2 ) / baud ) ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>baud<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>wBaudRate<S2SV_blank>=<S2SV_blank>%d\\\\n\" , __func__ , baud , config -> wBaudRate ) ; dev_dbg ( dev , \"wBaudRate:<S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , ( int ) ( 461550L / config -> wBaudRate ) ) ; dev_dbg ( dev , \"wFlags:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%x\\\\n\" , config -> wFlags ) ; dev_dbg ( dev , \"bDataBits:<S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> bDataBits ) ; dev_dbg ( dev , \"bParity:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> bParity ) ; dev_dbg ( dev , \"bStopBits:<S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> bStopBits ) ; dev_dbg ( dev , \"cXon:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> cXon ) ; dev_dbg ( dev , \"cXoff:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> cXoff ) ; dev_dbg ( dev , \"bUartMode:<S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> bUartMode ) ; cpu_to_be16s ( & config -> wFlags ) ; cpu_to_be16s ( & config -> wBaudRate ) ; status = send_cmd ( edge_port -> port -> serial -> dev , UMPC_SET_CONFIG , ( __u8 ) ( UMPM_UART1_PORT + port_number ) , 0 , ( __u8 * ) config , sizeof ( * config ) ) ; if ( status ) dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>error<S2SV_blank>%d<S2SV_blank>when<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>write<S2SV_blank>config<S2SV_blank>to<S2SV_blank>device\\\\n\" , __func__ , status ) ; kfree ( config ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } else { baud = min ( baud , 461550 ) ; <S2SV_ModStart> baud ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1019\n\n```\nCWE-000 void dev_load ( struct net * net , const char * name ) { struct net_device * dev ; <S2SV_StartBug> rcu_read_lock ( ) ; <S2SV_EndBug> dev = dev_get_by_name_rcu ( net , name ) ; rcu_read_unlock ( ) ; <S2SV_StartBug> if ( ! dev && capable ( CAP_NET_ADMIN ) ) <S2SV_EndBug> <S2SV_StartBug> request_module ( \"%s\" , name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * dev ; int no_module ; <S2SV_ModStart> ( ) ; no_module = ! dev ; if ( no_module <S2SV_ModEnd> && capable ( <S2SV_ModStart> CAP_NET_ADMIN ) ) no_module = request_module ( \"netdev-%s\" , name ) ; if ( no_module && capable ( CAP_SYS_MODULE ) ) { if ( ! <S2SV_ModStart> , name ) ) pr_err ( \"Loading<S2SV_blank>kernel<S2SV_blank>module<S2SV_blank>for<S2SV_blank>a<S2SV_blank>network<S2SV_blank>device<S2SV_blank>\" \"with<S2SV_blank>CAP_SYS_MODULE<S2SV_blank>(deprecated).<S2SV_blank><S2SV_blank>Use<S2SV_blank>CAP_NET_ADMIN<S2SV_blank>and<S2SV_blank>alias<S2SV_blank>netdev-%s<S2SV_blank>\" \"instead\\\\n\" , name ) ; } } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0991\n\n```\nCWE-399 void mono_gc_init ( void ) { InitializeCriticalSection ( & handle_section ) ; InitializeCriticalSection ( & allocator_section ) ; <S2SV_StartBug> InitializeCriticalSection ( & finalizer_mutex ) ; <S2SV_EndBug> MONO_GC_REGISTER_ROOT_FIXED ( gc_handles [ HANDLE_NORMAL ] . entries ) ; MONO_GC_REGISTER_ROOT_FIXED ( gc_handles [ HANDLE_PINNED ] . entries ) ; mono_gc_base_init ( ) ; if ( mono_gc_is_disabled ( ) ) { gc_disabled = TRUE ; return ; } finalizer_event = CreateEvent ( NULL , FALSE , FALSE , NULL ) ; pending_done_event = CreateEvent ( NULL , TRUE , FALSE , NULL ) ; shutdown_event = CreateEvent ( NULL , TRUE , FALSE , NULL ) ; if ( finalizer_event == NULL || pending_done_event == NULL || shutdown_event == NULL ) { g_assert_not_reached ( ) ; } # ifdef MONO_HAS_SEMAPHORES MONO_SEM_INIT ( & finalizer_sem , 0 ) ; # endif gc_thread = mono_thread_create_internal ( mono_domain_get ( ) , finalizer_thread , NULL , FALSE ) ; ves_icall_System_Threading_Thread_SetName_internal ( gc_thread , mono_string_new ( mono_domain_get ( ) , \"Finalizer\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( & finalizer_mutex ) ; InitializeCriticalSection ( & reference_queue_mutex\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-326 static VALUE ossl_cipher_update ( int argc , VALUE * argv , VALUE self ) { EVP_CIPHER_CTX * ctx ; unsigned char * in ; long in_len , out_len ; VALUE data , str ; rb_scan_args ( argc , argv , \"11\" , & data , & str ) ; <S2SV_StartBug> StringValue ( data ) ; <S2SV_EndBug> in = ( unsigned char * ) RSTRING_PTR ( data ) ; if ( ( in_len = RSTRING_LEN ( data ) ) == 0 ) ossl_raise ( rb_eArgError , \"data<S2SV_blank>must<S2SV_blank>not<S2SV_blank>be<S2SV_blank>empty\" ) ; GetCipher ( self , ctx ) ; out_len = in_len + EVP_CIPHER_CTX_block_size ( ctx ) ; if ( out_len <= 0 ) { ossl_raise ( rb_eRangeError , \"data<S2SV_blank>too<S2SV_blank>big<S2SV_blank>to<S2SV_blank>make<S2SV_blank>output<S2SV_blank>buffer:<S2SV_blank>%ld<S2SV_blank>bytes\" , in_len ) ; } if ( NIL_P ( str ) ) { str = rb_str_new ( 0 , out_len ) ; } else { StringValue ( str ) ; rb_str_resize ( str , out_len ) ; } if ( ! ossl_cipher_update_long ( ctx , ( unsigned char * ) RSTRING_PTR ( str ) , & out_len , in , in_len ) ) ossl_raise ( eCipherError , NULL ) ; assert ( out_len < RSTRING_LEN ( str ) ) ; rb_str_set_len ( str , out_len ) ; return str ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> str ) ; if ( ! RTEST ( rb_attr_get ( self , id_key_set ) ) ) ossl_raise ( eCipherError , \"key<S2SV_blank>not<S2SV_blank>set\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int test_candidate_kf ( VP8_COMP * cpi , FIRSTPASS_STATS * last_frame , FIRSTPASS_STATS * this_frame , FIRSTPASS_STATS * next_frame ) { int is_viable_kf = 0 ; if ( ( this_frame -> pcnt_second_ref < 0.10 ) && ( next_frame -> pcnt_second_ref < 0.10 ) && ( ( this_frame -> pcnt_inter < 0.05 ) || ( ( ( this_frame -> pcnt_inter - this_frame -> pcnt_neutral ) < .25 ) && ( ( this_frame -> intra_error / DOUBLE_DIVIDE_CHECK ( this_frame -> coded_error ) ) < 2.5 ) && ( ( fabs ( last_frame -> coded_error - this_frame -> coded_error ) / DOUBLE_DIVIDE_CHECK ( this_frame -> coded_error ) > .40 ) || ( fabs ( last_frame -> intra_error - this_frame -> intra_error ) / DOUBLE_DIVIDE_CHECK ( this_frame -> intra_error ) > .40 ) || ( ( next_frame -> intra_error / DOUBLE_DIVIDE_CHECK ( next_frame -> coded_error ) ) > 3.5 ) ) ) ) ) { int i ; FIRSTPASS_STATS * start_pos ; FIRSTPASS_STATS local_next_frame ; double boost_score = 0.0 ; double old_boost_score = 0.0 ; double decay_accumulator = 1.0 ; double next_iiratio ; <S2SV_StartBug> vpx_memcpy ( & local_next_frame , next_frame , sizeof ( * next_frame ) ) ; <S2SV_EndBug> start_pos = cpi -> twopass . stats_in ; for ( i = 0 ; i < 16 ; i ++ ) { next_iiratio = ( IIKFACTOR1 * local_next_frame . intra_error / DOUBLE_DIVIDE_CHECK ( local_next_frame . coded_error ) ) ; if ( next_iiratio > RMAX ) next_iiratio = RMAX ; if ( local_next_frame . pcnt_inter > 0.85 ) decay_accumulator = decay_accumulator * local_next_frame . pcnt_inter ; else decay_accumulator = decay_accumulator * ( ( 0.85 + local_next_frame . pcnt_inter ) / 2.0 ) ; boost_score += ( decay_accumulator * next_iiratio ) ; if ( ( local_next_frame . pcnt_inter < 0.05 ) || ( next_iiratio < 1.5 ) || ( ( ( local_next_frame . pcnt_inter - local_next_frame . pcnt_neutral ) < 0.20 ) && ( next_iiratio < 3.0 ) ) || ( ( boost_score - old_boost_score ) < 0.5 ) || ( local_next_frame . intra_error < 200 ) ) { break ; } old_boost_score = boost_score ; if ( EOF == input_stats ( cpi , & local_next_frame ) ) break ; } if ( boost_score > 5.0 && ( i > 3 ) ) is_viable_kf = 1 ; else { reset_fpf_position ( cpi , start_pos ) ; is_viable_kf = 0 ; } } return is_viable_kf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> double next_iiratio ; memcpy <S2SV_ModEnd> ( & local_next_frame\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _epoll_writev ( oe_fd_t * desc , const struct oe_iovec * iov , int iovcnt ) { ssize_t ret = - 1 ; epoll_t * file = _cast_epoll ( desc ) ; void * buf = NULL ; size_t buf_size = 0 ; <S2SV_StartBug> if ( ! file || ( iovcnt && ! iov ) || iovcnt < 0 || iovcnt > OE_IOV_MAX ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( oe_iov_pack ( iov , iovcnt , & buf , & buf_size ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> OE_RAISE_ERRNO ( OE_ENOMEM ) ; <S2SV_EndBug> if ( oe_syscall_writev_ocall ( & ret , file -> host_fd , buf , iovcnt , buf_size ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> done : <S2SV_EndBug> if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; size_t data_size = 0 ; <S2SV_ModStart> , & buf_size , & data_size <S2SV_ModStart> OE_RAISE_ERRNO ( OE_ENOMEM ) ; if ( data_size > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL <S2SV_ModStart> ) ; } if ( ret > ( ssize_t ) data_size ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void * vpx_calloc ( size_t num , size_t size ) { void * x ; x = vpx_memalign ( DEFAULT_ALIGNMENT , num * size ) ; if ( x ) <S2SV_StartBug> VPX_MEMSET_L ( x , 0 , num * size ) ; <S2SV_EndBug> return x ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( x ) memset <S2SV_ModEnd> ( x ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static arguments_ty ast_for_arguments ( struct compiling * c , const node * n ) { int i , j , k , nposargs = 0 , nkwonlyargs = 0 ; int nposdefaults = 0 , found_default = 0 ; asdl_seq * posargs , * posdefaults , * kwonlyargs , * kwdefaults ; arg_ty vararg = NULL , kwarg = NULL ; arg_ty arg = NULL ; node * ch ; if ( TYPE ( n ) == parameters ) { if ( NCH ( n ) == 2 ) return arguments ( NULL , NULL , NULL , NULL , NULL , NULL , c -> c_arena ) ; n = CHILD ( n , 1 ) ; } assert ( TYPE ( n ) == typedargslist || TYPE ( n ) == varargslist ) ; for ( i = 0 ; i < NCH ( n ) ; i ++ ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == STAR ) { i ++ ; if ( i < NCH ( n ) && ( TYPE ( CHILD ( n , i ) ) == tfpdef || TYPE ( CHILD ( n , i ) ) == vfpdef ) ) { i ++ ; } break ; } if ( TYPE ( ch ) == DOUBLESTAR ) break ; if ( TYPE ( ch ) == vfpdef || TYPE ( ch ) == tfpdef ) nposargs ++ ; if ( TYPE ( ch ) == EQUAL ) nposdefaults ++ ; } for ( ; i < NCH ( n ) ; ++ i ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == DOUBLESTAR ) break ; if ( TYPE ( ch ) == tfpdef || TYPE ( ch ) == vfpdef ) nkwonlyargs ++ ; } posargs = ( nposargs ? _Ta3_asdl_seq_new ( nposargs , c -> c_arena ) : NULL ) ; if ( ! posargs && nposargs ) return NULL ; kwonlyargs = ( nkwonlyargs ? _Ta3_asdl_seq_new ( nkwonlyargs , c -> c_arena ) : NULL ) ; if ( ! kwonlyargs && nkwonlyargs ) return NULL ; posdefaults = ( nposdefaults ? _Ta3_asdl_seq_new ( nposdefaults , c -> c_arena ) : NULL ) ; if ( ! posdefaults && nposdefaults ) return NULL ; kwdefaults = ( nkwonlyargs ? _Ta3_asdl_seq_new ( nkwonlyargs , c -> c_arena ) : NULL ) ; if ( ! kwdefaults && nkwonlyargs ) return NULL ; i = 0 ; j = 0 ; k = 0 ; while ( i < NCH ( n ) ) { ch = CHILD ( n , i ) ; switch ( TYPE ( ch ) ) { case tfpdef : case vfpdef : if ( i + 1 < NCH ( n ) && TYPE ( CHILD ( n , i + 1 ) ) == EQUAL ) { expr_ty expression = ast_for_expr ( c , CHILD ( n , i + 2 ) ) ; if ( ! expression ) return NULL ; assert ( posdefaults != NULL ) ; asdl_seq_SET ( posdefaults , j ++ , expression ) ; i += 2 ; found_default = 1 ; } else if ( found_default ) { ast_error ( c , n , \"non-default<S2SV_blank>argument<S2SV_blank>follows<S2SV_blank>default<S2SV_blank>argument\" ) ; return NULL ; } arg = ast_for_arg ( c , ch ) ; if ( ! arg ) return NULL ; asdl_seq_SET ( posargs , k ++ , arg ) ; i += 1 ; if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == COMMA ) i += 1 ; break ; case STAR : if ( i + 1 >= NCH ( n ) || ( i + 2 == NCH ( n ) && ( TYPE ( CHILD ( n , i + 1 ) ) == COMMA || TYPE ( CHILD ( n , i + 1 ) ) == TYPE_COMMENT ) ) ) { ast_error ( c , CHILD ( n , i ) , \"named<S2SV_blank>arguments<S2SV_blank>must<S2SV_blank>follow<S2SV_blank>bare<S2SV_blank>*\" ) ; return NULL ; } ch = CHILD ( n , i + 1 ) ; if ( TYPE ( ch ) == COMMA ) { int res = 0 ; i += 2 ; if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == TYPE_COMMENT ) { ast_error ( c , CHILD ( n , i ) , \"bare<S2SV_blank>*<S2SV_blank>has<S2SV_blank>associated<S2SV_blank>type<S2SV_blank>comment\" ) ; return NULL ; } res = handle_keywordonly_args ( c , n , i , kwonlyargs , kwdefaults ) ; if ( res == - 1 ) return NULL ; i = res ; } else { vararg = ast_for_arg ( c , ch ) ; if ( ! vararg ) return NULL ; i += 2 ; if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == COMMA ) i += 1 ; if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == TYPE_COMMENT ) { vararg -> type_comment = NEW_TYPE_COMMENT ( CHILD ( n , i ) ) ; if ( ! vararg -> type_comment ) return NULL ; i += 1 ; } if ( i < NCH ( n ) && ( TYPE ( CHILD ( n , i ) ) == tfpdef || TYPE ( CHILD ( n , i ) ) == vfpdef ) ) { int res = 0 ; res = handle_keywordonly_args ( c , n , i , kwonlyargs , kwdefaults ) ; if ( res == - 1 ) return NULL ; i = res ; } } break ; case DOUBLESTAR : ch = CHILD ( n , i + 1 ) ; assert ( TYPE ( ch ) == tfpdef || TYPE ( ch ) == vfpdef ) ; kwarg = ast_for_arg ( c , ch ) ; if ( ! kwarg ) return NULL ; i += 2 ; <S2SV_StartBug> if ( TYPE ( CHILD ( n , i ) ) == COMMA ) <S2SV_EndBug> i += 1 ; break ; case TYPE_COMMENT : assert ( i ) ; if ( kwarg ) arg = kwarg ; arg -> type_comment = NEW_TYPE_COMMENT ( ch ) ; if ( ! arg -> type_comment ) return NULL ; i += 1 ; break ; default : PyErr_Format ( PyExc_SystemError , \"unexpected<S2SV_blank>node<S2SV_blank>in<S2SV_blank>varargslist:<S2SV_blank>%d<S2SV_blank>@<S2SV_blank>%d\" , TYPE ( ch ) , i ) ; return NULL ; } } return arguments ( posargs , vararg , kwonlyargs , kwdefaults , kwarg , posdefaults , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( i < NCH ( n ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-25016\n\n```\nCWE-732 char * * <S2SV_StartBug> prepenv ( const struct rule * rule ) <S2SV_EndBug> { static const char * safeset [ ] = { \"DISPLAY\" , \"HOME\" , \"LOGNAME\" , \"MAIL\" , \"PATH\" , \"TERM\" , \"USER\" , \"USERNAME\" , NULL } ; struct env * env ; <S2SV_StartBug> env = createenv ( rule ) ; <S2SV_EndBug> if ( ! ( rule -> options & KEEPENV ) ) fillenv ( env , safeset ) ; if ( rule -> envlist ) fillenv ( env , rule -> envlist ) ; return flattenenv ( env ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rule * rule , const struct passwd * mypw , const struct passwd * targpw ) { <S2SV_ModEnd> struct env * <S2SV_ModStart> createenv ( rule , mypw , targpw <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6413\n\n```\nCWE-287 int oidc_oauth_check_userid ( request_rec * r , oidc_cfg * c ) { if ( ! ap_is_initial_req ( r ) ) { if ( r -> main != NULL ) r -> user = r -> main -> user ; else if ( r -> prev != NULL ) r -> user = r -> prev -> user ; if ( r -> user != NULL ) { oidc_debug ( r , \"recycling<S2SV_blank>user<S2SV_blank>\\'%s\\'<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>request<S2SV_blank>for<S2SV_blank>sub-request\" , r -> user ) ; return OK ; } } else if ( ( c -> redirect_uri != NULL ) && ( oidc_util_request_matches_url ( r , c -> redirect_uri ) ) ) { if ( oidc_util_request_has_parameter ( r , \"jwks\" ) ) { return oidc_handle_jwks ( r , c ) ; } } const char * access_token = NULL ; if ( oidc_oauth_get_bearer_token ( r , & access_token ) == FALSE ) return oidc_oauth_return_www_authenticate ( r , \"invalid_request\" , \"No<S2SV_blank>bearer<S2SV_blank>token<S2SV_blank>found<S2SV_blank>in<S2SV_blank>the<S2SV_blank>request\" ) ; json_t * token = NULL ; char * s_token = NULL ; if ( c -> oauth . introspection_endpoint_url != NULL ) { if ( oidc_oauth_resolve_access_token ( r , c , access_token , & token , & s_token ) == FALSE ) return oidc_oauth_return_www_authenticate ( r , \"invalid_token\" , \"Reference<S2SV_blank>token<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>introspected\" ) ; } else { if ( oidc_oauth_validate_jwt_access_token ( r , c , access_token , & token , & s_token ) == FALSE ) return oidc_oauth_return_www_authenticate ( r , \"invalid_token\" , \"JWT<S2SV_blank>token<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>validated\" ) ; } if ( token == NULL ) { oidc_error ( r , \"could<S2SV_blank>not<S2SV_blank>resolve<S2SV_blank>claims<S2SV_blank>(token<S2SV_blank>==<S2SV_blank>NULL)\" ) ; return oidc_oauth_return_www_authenticate ( r , \"invalid_token\" , \"No<S2SV_blank>claims<S2SV_blank>could<S2SV_blank>be<S2SV_blank>parsed<S2SV_blank>from<S2SV_blank>the<S2SV_blank>token\" ) ; } oidc_request_state_set ( r , OIDC_CLAIMS_SESSION_KEY , ( const char * ) s_token ) ; if ( oidc_oauth_set_remote_user ( r , c , token ) == FALSE ) { oidc_error ( r , \"remote<S2SV_blank>user<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>set,<S2SV_blank>aborting<S2SV_blank>with<S2SV_blank>HTTP_UNAUTHORIZED\" ) ; return oidc_oauth_return_www_authenticate ( r , \"invalid_token\" , \"Could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>remote<S2SV_blank>user\" ) ; } <S2SV_StartBug> char * authn_header = oidc_cfg_dir_authn_header ( r ) ; <S2SV_EndBug> int pass_headers = oidc_cfg_dir_pass_info_in_headers ( r ) ; int pass_envvars = oidc_cfg_dir_pass_info_in_envvars ( r ) ; if ( ( r -> user != NULL ) && ( authn_header != NULL ) ) { oidc_debug ( r , \"setting<S2SV_blank>authn<S2SV_blank>header<S2SV_blank>(%s)<S2SV_blank>to:<S2SV_blank>%s\" , authn_header , r -> user ) ; apr_table_set ( r -> headers_in , authn_header , r -> user ) ; } oidc_util_set_app_infos ( r , token , c -> claim_prefix , c -> claim_delimiter , pass_headers , pass_envvars ) ; if ( access_token != NULL ) { oidc_util_set_app_info ( r , \"access_token\" , access_token , OIDC_DEFAULT_HEADER_PREFIX , pass_headers , pass_envvars ) ; } json_decref ( token ) ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } oidc_scrub_headers ( r ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4097\n\n```\nCWE-189 unsigned int oom_badness ( struct task_struct * p , struct mem_cgroup * mem , const nodemask_t * nodemask , unsigned long totalpages ) { <S2SV_StartBug> int points ; <S2SV_EndBug> if ( oom_unkillable_task ( p , mem , nodemask ) ) return 0 ; p = find_lock_task_mm ( p ) ; if ( ! p ) return 0 ; if ( atomic_read ( & p -> mm -> oom_disable_count ) ) { task_unlock ( p ) ; return 0 ; } if ( ! totalpages ) totalpages = 1 ; points = get_mm_rss ( p -> mm ) + p -> mm -> nr_ptes ; points += get_mm_counter ( p -> mm , MM_SWAPENTS ) ; points *= 1000 ; points /= totalpages ; task_unlock ( p ) ; if ( has_capability_noaudit ( p , CAP_SYS_ADMIN ) ) points -= 30 ; points += p -> signal -> oom_score_adj ; if ( points <= 0 ) return 1 ; return ( points < 1000 ) ? points : 1000 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> totalpages ) { long <S2SV_ModEnd> points ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12843\n\n```\nCWE-20 static void cmdloop ( void ) { int c ; int usinguid , havepartition , havenamespace , recursive ; static struct buf tag , cmd , arg1 , arg2 , arg3 ; char * p , shut [ MAX_MAILBOX_PATH + 1 ] , cmdname [ 100 ] ; const char * err ; const char * commandmintimer ; double commandmintimerd = 0.0 ; struct sync_reserve_list * reserve_list = sync_reserve_list_create ( SYNC_MESSAGE_LIST_HASH_SIZE ) ; struct applepushserviceargs applepushserviceargs ; prot_printf ( imapd_out , \"*<S2SV_blank>OK<S2SV_blank>[CAPABILITY<S2SV_blank>\" ) ; capa_response ( CAPA_PREAUTH ) ; prot_printf ( imapd_out , \"]\" ) ; if ( config_serverinfo ) prot_printf ( imapd_out , \"<S2SV_blank>%s\" , config_servername ) ; if ( config_serverinfo == IMAP_ENUM_SERVERINFO_ON ) { prot_printf ( imapd_out , \"<S2SV_blank>Cyrus<S2SV_blank>IMAP<S2SV_blank>%s\" , cyrus_version ( ) ) ; } prot_printf ( imapd_out , \"<S2SV_blank>server<S2SV_blank>ready\\\\r\\\\n\" ) ; cmd_cancelled ( ) ; motd_file ( ) ; commandmintimer = config_getstring ( IMAPOPT_COMMANDMINTIMER ) ; cmdtime_settimer ( commandmintimer ? 1 : 0 ) ; if ( commandmintimer ) { commandmintimerd = atof ( commandmintimer ) ; } for ( ; ; ) { index_release ( imapd_index ) ; prot_flush ( imapd_out ) ; if ( backend_current ) prot_flush ( backend_current -> out ) ; proc_register ( config_ident , imapd_clienthost , imapd_userid , index_mboxname ( imapd_index ) , NULL ) ; if ( ! imapd_userisadmin && imapd_userid && ( shutdown_file ( shut , sizeof ( shut ) ) || userdeny ( imapd_userid , config_ident , shut , sizeof ( shut ) ) ) ) { for ( p = shut ; * p == '[' ; p ++ ) ; prot_printf ( imapd_out , \"*<S2SV_blank>BYE<S2SV_blank>[ALERT]<S2SV_blank>%s\\\\r\\\\n\" , p ) ; telemetry_rusage ( imapd_userid ) ; shut_down ( 0 ) ; } signals_poll ( ) ; if ( ! proxy_check_input ( protin , imapd_in , imapd_out , backend_current ? backend_current -> in : NULL , NULL , 0 ) ) { continue ; } c = getword ( imapd_in , & tag ) ; if ( c == EOF ) { if ( ( err = prot_error ( imapd_in ) ) != NULL && strcmp ( err , PROT_EOF_STRING ) ) { syslog ( LOG_WARNING , \"%s,<S2SV_blank>closing<S2SV_blank>connection\" , err ) ; prot_printf ( imapd_out , \"*<S2SV_blank>BYE<S2SV_blank>%s\\\\r\\\\n\" , err ) ; } goto done ; } if ( c != '<S2SV_blank>' || ! imparse_isatom ( tag . s ) || ( tag . s [ 0 ] == '*' && ! tag . s [ 1 ] ) ) { prot_printf ( imapd_out , \"*<S2SV_blank>BAD<S2SV_blank>Invalid<S2SV_blank>tag\\\\r\\\\n\" ) ; eatline ( imapd_in , c ) ; continue ; } c = getword ( imapd_in , & cmd ) ; if ( ! cmd . s [ 0 ] ) { prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Null<S2SV_blank>command\\\\r\\\\n\" , tag . s ) ; eatline ( imapd_in , c ) ; continue ; } lcase ( cmd . s ) ; xstrncpy ( cmdname , cmd . s , 99 ) ; cmd . s [ 0 ] = toupper ( ( unsigned char ) cmd . s [ 0 ] ) ; if ( config_getswitch ( IMAPOPT_CHATTY ) ) syslog ( LOG_NOTICE , \"command:<S2SV_blank>%s<S2SV_blank>%s\" , tag . s , cmd . s ) ; proc_register ( config_ident , imapd_clienthost , imapd_userid , index_mboxname ( imapd_index ) , cmd . s ) ; if ( referral_kick ) { kick_mupdate ( ) ; referral_kick = 0 ; } if ( plaintextloginalert ) { prot_printf ( imapd_out , \"*<S2SV_blank>OK<S2SV_blank>[ALERT]<S2SV_blank>%s\\\\r\\\\n\" , plaintextloginalert ) ; plaintextloginalert = NULL ; } if ( ! imapd_userid && ! strchr ( \"AELNCIS\" , cmd . s [ 0 ] ) ) goto nologin ; cmdtime_starttimer ( ) ; switch ( cmd . s [ 0 ] ) { case 'A' : if ( ! strcmp ( cmd . s , \"Authenticate\" ) ) { int haveinitresp = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getword ( imapd_in , & arg1 ) ; if ( ! imparse_isatom ( arg1 . s ) ) { prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Invalid<S2SV_blank>authenticate<S2SV_blank>mechanism\\\\r\\\\n\" , tag . s ) ; eatline ( imapd_in , c ) ; continue ; } if ( c == '<S2SV_blank>' ) { haveinitresp = 1 ; c = getword ( imapd_in , & arg2 ) ; if ( c == EOF ) goto missingargs ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; if ( imapd_userid ) { prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Already<S2SV_blank>authenticated\\\\r\\\\n\" , tag . s ) ; continue ; } cmd_authenticate ( tag . s , arg1 . s , haveinitresp ? arg2 . s : NULL ) ; snmp_increment ( AUTHENTICATE_COUNT , 1 ) ; } else if ( ! imapd_userid ) goto nologin ; else if ( ! strcmp ( cmd . s , \"Append\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_append ( tag . s , arg1 . s , NULL ) ; snmp_increment ( APPEND_COUNT , 1 ) ; } else goto badcmd ; break ; case 'C' : if ( ! strcmp ( cmd . s , \"Capability\" ) ) { if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_capability ( tag . s ) ; snmp_increment ( CAPABILITY_COUNT , 1 ) ; } else if ( ! imapd_userid ) goto nologin ; # ifdef HAVE_ZLIB else if ( ! strcmp ( cmd . s , \"Compress\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getword ( imapd_in , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_compress ( tag . s , arg1 . s ) ; snmp_increment ( COMPRESS_COUNT , 1 ) ; } # endif else if ( ! strcmp ( cmd . s , \"Check\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_noop ( tag . s , cmd . s ) ; snmp_increment ( CHECK_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Copy\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; copy : c = getword ( imapd_in , & arg1 ) ; if ( c == '\\\\r' ) goto missingargs ; if ( c != '<S2SV_blank>' || ! imparse_issequence ( arg1 . s ) ) goto badsequence ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_copy ( tag . s , arg1 . s , arg2 . s , usinguid , 0 ) ; snmp_increment ( COPY_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Create\" ) ) { struct dlist * extargs = NULL ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '<S2SV_blank>' ) { c = parsecreateargs ( & extargs ) ; if ( c == EOF ) goto badpartition ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_create ( tag . s , arg1 . s , extargs , 0 ) ; dlist_free ( & extargs ) ; snmp_increment ( CREATE_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Close\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_close ( tag . s , cmd . s ) ; snmp_increment ( CLOSE_COUNT , 1 ) ; } else goto badcmd ; break ; case 'D' : if ( ! strcmp ( cmd . s , \"Delete\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_delete ( tag . s , arg1 . s , 0 , 0 ) ; snmp_increment ( DELETE_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Deleteacl\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_setacl ( tag . s , arg1 . s , arg2 . s , NULL ) ; snmp_increment ( DELETEACL_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Dump\" ) ) { int uid_start = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == '<S2SV_blank>' ) { c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( ! imparse_isnumber ( arg2 . s ) ) goto extraargs ; uid_start = atoi ( arg2 . s ) ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_dump ( tag . s , arg1 . s , uid_start ) ; } else goto badcmd ; break ; case 'E' : if ( ! imapd_userid ) goto nologin ; else if ( ! strcmp ( cmd . s , \"Enable\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_enable ( tag . s ) ; } else if ( ! strcmp ( cmd . s , \"Expunge\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_expunge ( tag . s , 0 ) ; snmp_increment ( EXPUNGE_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Examine\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; prot_ungetc ( c , imapd_in ) ; cmd_select ( tag . s , cmd . s , arg1 . s ) ; snmp_increment ( EXAMINE_COUNT , 1 ) ; } else goto badcmd ; break ; case 'F' : if ( ! strcmp ( cmd . s , \"Fetch\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; fetch : c = getword ( imapd_in , & arg1 ) ; if ( c == '\\\\r' ) goto missingargs ; if ( c != '<S2SV_blank>' || ! imparse_issequence ( arg1 . s ) ) goto badsequence ; cmd_fetch ( tag . s , arg1 . s , usinguid ) ; snmp_increment ( FETCH_COUNT , 1 ) ; } else goto badcmd ; break ; case 'G' : if ( ! strcmp ( cmd . s , \"Getacl\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_getacl ( tag . s , arg1 . s ) ; snmp_increment ( GETACL_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Getannotation\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_getannotation ( tag . s , arg1 . s ) ; snmp_increment ( GETANNOTATION_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Getmetadata\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_getmetadata ( tag . s ) ; snmp_increment ( GETANNOTATION_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Getquota\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_getquota ( tag . s , arg1 . s ) ; snmp_increment ( GETQUOTA_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Getquotaroot\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_getquotaroot ( tag . s , arg1 . s ) ; snmp_increment ( GETQUOTAROOT_COUNT , 1 ) ; } # ifdef HAVE_SSL else if ( ! strcmp ( cmd . s , \"Genurlauth\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_genurlauth ( tag . s ) ; } # endif else goto badcmd ; break ; case 'I' : if ( ! strcmp ( cmd . s , \"Id\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_id ( tag . s ) ; snmp_increment ( ID_COUNT , 1 ) ; } else if ( ! imapd_userid ) goto nologin ; else if ( ! strcmp ( cmd . s , \"Idle\" ) && idle_enabled ( ) ) { if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_idle ( tag . s ) ; snmp_increment ( IDLE_COUNT , 1 ) ; } else goto badcmd ; break ; case 'L' : if ( ! strcmp ( cmd . s , \"Login\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_login ( tag . s , arg1 . s ) ; snmp_increment ( LOGIN_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Logout\" ) ) { if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; snmp_increment ( LOGOUT_COUNT , 1 ) ; if ( backend_current ) imapd_check ( NULL , 0 ) ; prot_printf ( imapd_out , \"*<S2SV_blank>BYE<S2SV_blank>%s\\\\r\\\\n\" , error_message ( IMAP_BYE_LOGOUT ) ) ; prot_printf ( imapd_out , \"%s<S2SV_blank>OK<S2SV_blank>%s\\\\r\\\\n\" , tag . s , error_message ( IMAP_OK_COMPLETED ) ) ; if ( imapd_userid && * imapd_userid ) { telemetry_rusage ( imapd_userid ) ; } goto done ; } else if ( ! imapd_userid ) goto nologin ; else if ( ! strcmp ( cmd . s , \"List\" ) ) { struct listargs listargs ; if ( c != '<S2SV_blank>' ) goto missingargs ; memset ( & listargs , 0 , sizeof ( struct listargs ) ) ; listargs . ret = LIST_RET_CHILDREN ; getlistargs ( tag . s , & listargs ) ; if ( listargs . pat . count ) cmd_list ( tag . s , & listargs ) ; snmp_increment ( LIST_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Lsub\" ) ) { struct listargs listargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; memset ( & listargs , 0 , sizeof ( struct listargs ) ) ; listargs . cmd = LIST_CMD_LSUB ; listargs . sel = LIST_SEL_SUBSCRIBED ; if ( ! strcasecmpsafe ( imapd_magicplus , \"+dav\" ) ) listargs . sel |= LIST_SEL_DAV ; listargs . ref = arg1 . s ; strarray_append ( & listargs . pat , arg2 . s ) ; cmd_list ( tag . s , & listargs ) ; snmp_increment ( LSUB_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Listrights\" ) ) { c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_listrights ( tag . s , arg1 . s , arg2 . s ) ; snmp_increment ( LISTRIGHTS_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Localappend\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_append ( tag . s , arg1 . s , * arg2 . s ? arg2 . s : NULL ) ; snmp_increment ( APPEND_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Localcreate\" ) ) { struct dlist * extargs = NULL ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '<S2SV_blank>' ) { c = parsecreateargs ( & extargs ) ; if ( c == EOF ) goto badpartition ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_create ( tag . s , arg1 . s , extargs , 1 ) ; dlist_free ( & extargs ) ; } else if ( ! strcmp ( cmd . s , \"Localdelete\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_delete ( tag . s , arg1 . s , 1 , 1 ) ; } else goto badcmd ; break ; case 'M' : if ( ! strcmp ( cmd . s , \"Myrights\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_myrights ( tag . s , arg1 . s ) ; } else if ( ! strcmp ( cmd . s , \"Mupdatepush\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_mupdatepush ( tag . s , arg1 . s ) ; } else if ( ! strcmp ( cmd . s , \"Move\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; move : c = getword ( imapd_in , & arg1 ) ; if ( c == '\\\\r' ) goto missingargs ; if ( c != '<S2SV_blank>' || ! imparse_issequence ( arg1 . s ) ) goto badsequence ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_copy ( tag . s , arg1 . s , arg2 . s , usinguid , 1 ) ; snmp_increment ( COPY_COUNT , 1 ) ; } else goto badcmd ; break ; case 'N' : if ( ! strcmp ( cmd . s , \"Noop\" ) ) { if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_noop ( tag . s , cmd . s ) ; } else if ( ! imapd_userid ) goto nologin ; else if ( ! strcmp ( cmd . s , \"Namespace\" ) ) { if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_namespace ( tag . s ) ; } else goto badcmd ; break ; case 'R' : if ( ! strcmp ( cmd . s , \"Rename\" ) ) { havepartition = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == EOF ) goto missingargs ; if ( c == '<S2SV_blank>' ) { havepartition = 1 ; c = getword ( imapd_in , & arg3 ) ; if ( ! imparse_isatom ( arg3 . s ) ) goto badpartition ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_rename ( tag . s , arg1 . s , arg2 . s , havepartition ? arg3 . s : 0 ) ; } else if ( ! strcmp ( cmd . s , \"Reconstruct\" ) ) { recursive = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == '<S2SV_blank>' ) { c = getword ( imapd_in , & arg2 ) ; if ( ! imparse_isatom ( arg2 . s ) ) goto extraargs ; else if ( ! strcasecmp ( arg2 . s , \"RECURSIVE\" ) ) recursive = 1 ; else goto extraargs ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_reconstruct ( tag . s , arg1 . s , recursive ) ; } else if ( ! strcmp ( cmd . s , \"Rlist\" ) ) { struct listargs listargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; memset ( & listargs , 0 , sizeof ( struct listargs ) ) ; listargs . sel = LIST_SEL_REMOTE ; listargs . ret = LIST_RET_CHILDREN ; listargs . ref = arg1 . s ; strarray_append ( & listargs . pat , arg2 . s ) ; cmd_list ( tag . s , & listargs ) ; } else if ( ! strcmp ( cmd . s , \"Rlsub\" ) ) { struct listargs listargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; memset ( & listargs , 0 , sizeof ( struct listargs ) ) ; listargs . cmd = LIST_CMD_LSUB ; listargs . sel = LIST_SEL_REMOTE | LIST_SEL_SUBSCRIBED ; listargs . ref = arg1 . s ; strarray_append ( & listargs . pat , arg2 . s ) ; cmd_list ( tag . s , & listargs ) ; } # ifdef HAVE_SSL else if ( ! strcmp ( cmd . s , \"Resetkey\" ) ) { int have_mbox = 0 , have_mech = 0 ; if ( c == '<S2SV_blank>' ) { have_mbox = 1 ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '<S2SV_blank>' ) { have_mech = 1 ; c = getword ( imapd_in , & arg2 ) ; } } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_resetkey ( tag . s , have_mbox ? arg1 . s : 0 , have_mech ? arg2 . s : 0 ) ; } # endif else goto badcmd ; break ; case 'S' : if ( ! strcmp ( cmd . s , \"Starttls\" ) ) { if ( ! tls_enabled ( ) ) { goto badcmd ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; prot_flush ( imapd_in ) ; if ( imapd_userid != NULL ) { prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Can\\'t<S2SV_blank>Starttls<S2SV_blank>after<S2SV_blank>authentication\\\\r\\\\n\" , tag . s ) ; continue ; } if ( imapd_compress_done == 1 ) { prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Can\\'t<S2SV_blank>Starttls<S2SV_blank>after<S2SV_blank>Compress\\\\r\\\\n\" , tag . s ) ; continue ; } if ( imapd_starttls_done == 1 ) { prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Already<S2SV_blank>did<S2SV_blank>a<S2SV_blank>successful<S2SV_blank>Starttls\\\\r\\\\n\" , tag . s ) ; continue ; } cmd_starttls ( tag . s , 0 ) ; snmp_increment ( STARTTLS_COUNT , 1 ) ; continue ; } if ( ! imapd_userid ) { goto nologin ; } else if ( ! strcmp ( cmd . s , \"Store\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; store : c = getword ( imapd_in , & arg1 ) ; if ( c != '<S2SV_blank>' || ! imparse_issequence ( arg1 . s ) ) goto badsequence ; cmd_store ( tag . s , arg1 . s , usinguid ) ; snmp_increment ( STORE_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Select\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; prot_ungetc ( c , imapd_in ) ; cmd_select ( tag . s , cmd . s , arg1 . s ) ; snmp_increment ( SELECT_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Search\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; search : cmd_search ( tag . s , usinguid ) ; snmp_increment ( SEARCH_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Subscribe\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; havenamespace = 0 ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == '<S2SV_blank>' ) { havenamespace = 1 ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; } if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; if ( havenamespace ) { cmd_changesub ( tag . s , arg1 . s , arg2 . s , 1 ) ; } else { cmd_changesub ( tag . s , ( char * ) 0 , arg1 . s , 1 ) ; } snmp_increment ( SUBSCRIBE_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Setacl\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg3 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_setacl ( tag . s , arg1 . s , arg2 . s , arg3 . s ) ; snmp_increment ( SETACL_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Setannotation\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_setannotation ( tag . s , arg1 . s ) ; snmp_increment ( SETANNOTATION_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Setmetadata\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_setmetadata ( tag . s , arg1 . s ) ; snmp_increment ( SETANNOTATION_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Setquota\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_setquota ( tag . s , arg1 . s ) ; snmp_increment ( SETQUOTA_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Sort\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; sort : cmd_sort ( tag . s , usinguid ) ; snmp_increment ( SORT_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Status\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_status ( tag . s , arg1 . s ) ; snmp_increment ( STATUS_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Scan\" ) ) { struct listargs listargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg3 ) ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; memset ( & listargs , 0 , sizeof ( struct listargs ) ) ; listargs . ref = arg1 . s ; strarray_append ( & listargs . pat , arg2 . s ) ; listargs . scan = arg3 . s ; cmd_list ( tag . s , & listargs ) ; snmp_increment ( SCAN_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Syncapply\" ) ) { <S2SV_StartBug> struct dlist * kl = sync_parseline ( imapd_in ) ; <S2SV_EndBug> if ( kl ) { cmd_syncapply ( tag . s , kl , reserve_list ) ; dlist_free ( & kl ) ; } else goto extraargs ; } else if ( ! strcmp ( cmd . s , \"Syncget\" ) ) { <S2SV_StartBug> struct dlist * kl = sync_parseline ( imapd_in ) ; <S2SV_EndBug> if ( kl ) { cmd_syncget ( tag . s , kl ) ; dlist_free ( & kl ) ; } else goto extraargs ; } else if ( ! strcmp ( cmd . s , \"Syncrestart\" ) ) { <S2SV_StartBug> if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; <S2SV_EndBug> if ( c != '\\\\n' ) goto extraargs ; cmd_syncrestart ( tag . s , & reserve_list , 1 ) ; } <S2SV_StartBug> else if ( ! strcmp ( cmd . s , \"Syncrestore\" ) ) { <S2SV_EndBug> struct dlist * kl = sync_parseline ( imapd_in ) ; if ( kl ) { cmd_syncrestore ( tag . s , kl , reserve_list ) ; dlist_free ( & kl ) ; } else goto extraargs ; } else goto badcmd ; break ; case 'T' : if ( ! strcmp ( cmd . s , \"Thread\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; thread : cmd_thread ( tag . s , usinguid ) ; snmp_increment ( THREAD_COUNT , 1 ) ; } else goto badcmd ; break ; case 'U' : if ( ! strcmp ( cmd . s , \"Uid\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 1 ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getword ( imapd_in , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; lcase ( arg1 . s ) ; xstrncpy ( cmdname , arg1 . s , 99 ) ; if ( ! strcmp ( arg1 . s , \"fetch\" ) ) { goto fetch ; } else if ( ! strcmp ( arg1 . s , \"store\" ) ) { goto store ; } else if ( ! strcmp ( arg1 . s , \"search\" ) ) { goto search ; } else if ( ! strcmp ( arg1 . s , \"sort\" ) ) { goto sort ; } else if ( ! strcmp ( arg1 . s , \"thread\" ) ) { goto thread ; } else if ( ! strcmp ( arg1 . s , \"copy\" ) ) { goto copy ; } else if ( ! strcmp ( arg1 . s , \"move\" ) ) { goto move ; } else if ( ! strcmp ( arg1 . s , \"xmove\" ) ) { goto move ; } else if ( ! strcmp ( arg1 . s , \"expunge\" ) ) { c = getword ( imapd_in , & arg1 ) ; if ( ! imparse_issequence ( arg1 . s ) ) goto badsequence ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_expunge ( tag . s , arg1 . s ) ; snmp_increment ( EXPUNGE_COUNT , 1 ) ; } else if ( ! strcmp ( arg1 . s , \"xrunannotator\" ) ) { goto xrunannotator ; } else { prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Unrecognized<S2SV_blank>UID<S2SV_blank>subcommand\\\\r\\\\n\" , tag . s ) ; eatline ( imapd_in , c ) ; } } else if ( ! strcmp ( cmd . s , \"Unsubscribe\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; havenamespace = 0 ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == '<S2SV_blank>' ) { havenamespace = 1 ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; } if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; if ( havenamespace ) { cmd_changesub ( tag . s , arg1 . s , arg2 . s , 0 ) ; } else { cmd_changesub ( tag . s , ( char * ) 0 , arg1 . s , 0 ) ; } snmp_increment ( UNSUBSCRIBE_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Unselect\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_close ( tag . s , cmd . s ) ; snmp_increment ( UNSELECT_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Undump\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_undump ( tag . s , arg1 . s ) ; } # ifdef HAVE_SSL else if ( ! strcmp ( cmd . s , \"Urlfetch\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_urlfetch ( tag . s ) ; } # endif else goto badcmd ; break ; case 'X' : if ( ! strcmp ( cmd . s , \"Xbackup\" ) ) { int havechannel = 0 ; if ( ! config_getswitch ( IMAPOPT_XBACKUP_ENABLED ) ) goto badcmd ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == '<S2SV_blank>' ) { havechannel = 1 ; c = getword ( imapd_in , & arg2 ) ; if ( c == EOF ) goto missingargs ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_xbackup ( tag . s , arg1 . s , havechannel ? arg2 . s : NULL ) ; } else if ( ! strcmp ( cmd . s , \"Xconvfetch\" ) ) { cmd_xconvfetch ( tag . s ) ; } else if ( ! strcmp ( cmd . s , \"Xconvmultisort\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; if ( ! imapd_index && ! backend_current ) goto nomailbox ; cmd_xconvmultisort ( tag . s ) ; } else if ( ! strcmp ( cmd . s , \"Xconvsort\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; if ( ! imapd_index && ! backend_current ) goto nomailbox ; cmd_xconvsort ( tag . s , 0 ) ; } else if ( ! strcmp ( cmd . s , \"Xconvupdates\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; if ( ! imapd_index && ! backend_current ) goto nomailbox ; cmd_xconvsort ( tag . s , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Xfer\" ) ) { int havepartition = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == '<S2SV_blank>' ) { c = getastring ( imapd_in , imapd_out , & arg3 ) ; if ( ! imparse_isatom ( arg3 . s ) ) goto badpartition ; havepartition = 1 ; } if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_xfer ( tag . s , arg1 . s , arg2 . s , ( havepartition ? arg3 . s : NULL ) ) ; } else if ( ! strcmp ( cmd . s , \"Xconvmeta\" ) ) { cmd_xconvmeta ( tag . s ) ; } else if ( ! strcmp ( cmd . s , \"Xlist\" ) ) { struct listargs listargs ; if ( c != '<S2SV_blank>' ) goto missingargs ; memset ( & listargs , 0 , sizeof ( struct listargs ) ) ; listargs . cmd = LIST_CMD_XLIST ; listargs . ret = LIST_RET_CHILDREN | LIST_RET_SPECIALUSE ; getlistargs ( tag . s , & listargs ) ; if ( listargs . pat . count ) cmd_list ( tag . s , & listargs ) ; snmp_increment ( LIST_COUNT , 1 ) ; } else if ( ! strcmp ( cmd . s , \"Xmove\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; goto move ; } else if ( ! strcmp ( cmd . s , \"Xrunannotator\" ) ) { if ( ! imapd_index && ! backend_current ) goto nomailbox ; usinguid = 0 ; if ( c != '<S2SV_blank>' ) goto missingargs ; xrunannotator : c = getword ( imapd_in , & arg1 ) ; if ( ! arg1 . len || ! imparse_issequence ( arg1 . s ) ) goto badsequence ; cmd_xrunannotator ( tag . s , arg1 . s , usinguid ) ; } else if ( ! strcmp ( cmd . s , \"Xsnippets\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; if ( ! imapd_index && ! backend_current ) goto nomailbox ; cmd_xsnippets ( tag . s ) ; } else if ( ! strcmp ( cmd . s , \"Xstats\" ) ) { cmd_xstats ( tag . s , c ) ; } else if ( ! strcmp ( cmd . s , \"Xwarmup\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; cmd_xwarmup ( tag . s ) ; } else if ( ! strcmp ( cmd . s , \"Xkillmy\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_xkillmy ( tag . s , arg1 . s ) ; } else if ( ! strcmp ( cmd . s , \"Xforever\" ) ) { if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_xforever ( tag . s ) ; } else if ( ! strcmp ( cmd . s , \"Xmeid\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto missingargs ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto extraargs ; cmd_xmeid ( tag . s , arg1 . s ) ; } else if ( apns_enabled && ! strcmp ( cmd . s , \"Xapplepushservice\" ) ) { if ( c != '<S2SV_blank>' ) goto missingargs ; memset ( & applepushserviceargs , 0 , sizeof ( struct applepushserviceargs ) ) ; do { c = getastring ( imapd_in , imapd_out , & arg1 ) ; if ( c == EOF ) goto aps_missingargs ; if ( ! strcmp ( arg1 . s , \"mailboxes\" ) ) { c = prot_getc ( imapd_in ) ; if ( c != '(' ) goto aps_missingargs ; c = prot_getc ( imapd_in ) ; if ( c != ')' ) { prot_ungetc ( c , imapd_in ) ; do { c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( c == EOF ) break ; strarray_push ( & applepushserviceargs . mailboxes , arg2 . s ) ; } while ( c == '<S2SV_blank>' ) ; } if ( c != ')' ) goto aps_missingargs ; c = prot_getc ( imapd_in ) ; } else { c = getastring ( imapd_in , imapd_out , & arg2 ) ; if ( ! strcmp ( arg1 . s , \"aps-version\" ) ) { if ( ! imparse_isnumber ( arg2 . s ) ) goto aps_extraargs ; applepushserviceargs . aps_version = atoi ( arg2 . s ) ; } else if ( ! strcmp ( arg1 . s , \"aps-account-id\" ) ) buf_copy ( & applepushserviceargs . aps_account_id , & arg2 ) ; else if ( ! strcmp ( arg1 . s , \"aps-device-token\" ) ) buf_copy ( & applepushserviceargs . aps_device_token , & arg2 ) ; else if ( ! strcmp ( arg1 . s , \"aps-subtopic\" ) ) buf_copy ( & applepushserviceargs . aps_subtopic , & arg2 ) ; else goto aps_extraargs ; } } while ( c == '<S2SV_blank>' ) ; if ( c == '\\\\r' ) c = prot_getc ( imapd_in ) ; if ( c != '\\\\n' ) goto aps_extraargs ; cmd_xapplepushservice ( tag . s , & applepushserviceargs ) ; } else goto badcmd ; break ; default : badcmd : prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Unrecognized<S2SV_blank>command\\\\r\\\\n\" , tag . s ) ; eatline ( imapd_in , c ) ; } if ( commandmintimer && strcmp ( \"idle\" , cmdname ) ) { double cmdtime , nettime ; const char * mboxname = index_mboxname ( imapd_index ) ; if ( ! mboxname ) mboxname = \"<none>\" ; cmdtime_endtimer ( & cmdtime , & nettime ) ; if ( cmdtime >= commandmintimerd ) { syslog ( LOG_NOTICE , \"cmdtimer:<S2SV_blank>\\'%s\\'<S2SV_blank>\\'%s\\'<S2SV_blank>\\'%s\\'<S2SV_blank>\\'%f\\'<S2SV_blank>\\'%f\\'<S2SV_blank>\\'%f\\'\" , imapd_userid ? imapd_userid : \"<none>\" , cmdname , mboxname , cmdtime , nettime , cmdtime + nettime ) ; } } continue ; nologin : prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Please<S2SV_blank>login<S2SV_blank>first\\\\r\\\\n\" , tag . s ) ; eatline ( imapd_in , c ) ; continue ; nomailbox : prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Please<S2SV_blank>select<S2SV_blank>a<S2SV_blank>mailbox<S2SV_blank>first\\\\r\\\\n\" , tag . s ) ; eatline ( imapd_in , c ) ; continue ; aps_missingargs : buf_free ( & applepushserviceargs . aps_account_id ) ; buf_free ( & applepushserviceargs . aps_device_token ) ; buf_free ( & applepushserviceargs . aps_subtopic ) ; strarray_fini ( & applepushserviceargs . mailboxes ) ; missingargs : prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Missing<S2SV_blank>required<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>%s\\\\r\\\\n\" , tag . s , cmd . s ) ; eatline ( imapd_in , c ) ; continue ; aps_extraargs : buf_free ( & applepushserviceargs . aps_account_id ) ; buf_free ( & applepushserviceargs . aps_device_token ) ; buf_free ( & applepushserviceargs . aps_subtopic ) ; strarray_fini ( & applepushserviceargs . mailboxes ) ; extraargs : prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Unexpected<S2SV_blank>extra<S2SV_blank>arguments<S2SV_blank>to<S2SV_blank>%s\\\\r\\\\n\" , tag . s , cmd . s ) ; eatline ( imapd_in , c ) ; continue ; badsequence : prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Invalid<S2SV_blank>sequence<S2SV_blank>in<S2SV_blank>%s\\\\r\\\\n\" , tag . s , cmd . s ) ; eatline ( imapd_in , c ) ; continue ; badpartition : prot_printf ( imapd_out , \"%s<S2SV_blank>BAD<S2SV_blank>Invalid<S2SV_blank>partition<S2SV_blank>name<S2SV_blank>in<S2SV_blank>%s\\\\r\\\\n\" , tag . s , cmd . s ) ; eatline ( imapd_in , c ) ; continue ; } done : cmd_syncrestart ( NULL , & reserve_list , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( ! imapd_userisadmin ) goto badcmd ; <S2SV_ModStart> ) ) { if ( ! imapd_userisadmin ) goto badcmd ; <S2SV_ModStart> { if ( ! imapd_userisadmin ) goto badcmd ; if ( <S2SV_ModStart> ) ) { if ( ! imapd_userisadmin ) goto badcmd ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1739\n\n```\nCWE-200 static long media_device_enum_entities ( struct media_device * mdev , struct media_entity_desc __user * uent ) { struct media_entity * ent ; struct media_entity_desc u_ent ; <S2SV_StartBug> if ( copy_from_user ( & u_ent . id , & uent -> id , sizeof ( u_ent . id ) ) ) <S2SV_EndBug> return - EFAULT ; ent = find_entity ( mdev , u_ent . id ) ; if ( ent == NULL ) return - EINVAL ; u_ent . id = ent -> id ; if ( ent -> name ) { strncpy ( u_ent . name , ent -> name , sizeof ( u_ent . name ) ) ; u_ent . name [ sizeof ( u_ent . name ) - 1 ] = '\\\\0' ; } else { memset ( u_ent . name , 0 , sizeof ( u_ent . name ) ) ; } u_ent . type = ent -> type ; u_ent . revision = ent -> revision ; u_ent . flags = ent -> flags ; u_ent . group_id = ent -> group_id ; u_ent . pads = ent -> num_pads ; u_ent . links = ent -> num_links - ent -> num_backlinks ; memcpy ( & u_ent . raw , & ent -> info , sizeof ( ent -> info ) ) ; if ( copy_to_user ( uent , & u_ent , sizeof ( u_ent ) ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> media_entity_desc u_ent ; memset ( & u_ent , 0 , sizeof ( u_ent ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6348\n\n```\nCWE-000 int hashbin_delete ( hashbin_t * hashbin , FREE_FUNC free_func ) { irda_queue_t * queue ; unsigned long flags = 0 ; int i ; IRDA_ASSERT ( hashbin != NULL , return - 1 ; ) ; IRDA_ASSERT ( hashbin -> magic == HB_MAGIC , return - 1 ; ) ; <S2SV_StartBug> if ( hashbin -> hb_type & HB_LOCK ) { <S2SV_EndBug> spin_lock_irqsave_nested ( & hashbin -> hb_spinlock , flags , hashbin_lock_depth ++ ) ; } for ( i = 0 ; i < HASHBIN_SIZE ; i ++ ) { <S2SV_StartBug> queue = dequeue_first ( ( irda_queue_t * * ) & hashbin -> hb_queue [ i ] ) ; <S2SV_EndBug> <S2SV_StartBug> while ( queue ) { <S2SV_EndBug> if ( free_func ) <S2SV_StartBug> ( * free_func ) ( queue ) ; <S2SV_EndBug> queue = dequeue_first ( ( irda_queue_t * * ) & hashbin -> hb_queue [ i ] ) ; } } hashbin -> hb_current = NULL ; hashbin -> magic = ~ HB_MAGIC ; <S2SV_StartBug> if ( hashbin -> hb_type & HB_LOCK ) { <S2SV_EndBug> spin_unlock_irqrestore ( & hashbin -> hb_spinlock , flags ) ; <S2SV_StartBug> # ifdef CONFIG_LOCKDEP <S2SV_EndBug> hashbin_lock_depth -- ; # endif } kfree ( hashbin ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & HB_LOCK ) spin_lock_irqsave ( & hashbin -> hb_spinlock , flags ) ; <S2SV_ModEnd> for ( i <S2SV_ModStart> ++ ) { while ( 1 ) { <S2SV_ModStart> ] ) ; if ( ! queue ) break ; <S2SV_ModEnd> if ( free_func <S2SV_ModStart> ( free_func ) { if ( hashbin -> hb_type & HB_LOCK ) spin_unlock_irqrestore ( & hashbin -> hb_spinlock , flags ) ; free_func ( queue ) ; if ( hashbin -> hb_type & HB_LOCK ) spin_lock_irqsave ( & hashbin -> hb_spinlock , flags ) ; } <S2SV_ModEnd> } } hashbin <S2SV_ModStart> & HB_LOCK ) <S2SV_ModEnd> spin_unlock_irqrestore ( & <S2SV_ModStart> flags ) ; <S2SV_ModEnd> kfree ( hashbin\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-476 static int validate_user_key ( struct fscrypt_info * crypt_info , struct fscrypt_context * ctx , u8 * raw_key , const char * prefix ) { char * description ; struct key * keyring_key ; struct fscrypt_key * master_key ; const struct user_key_payload * ukp ; int res ; description = kasprintf ( GFP_NOFS , \"%s%*phN\" , prefix , FS_KEY_DESCRIPTOR_SIZE , ctx -> master_key_descriptor ) ; if ( ! description ) return - ENOMEM ; keyring_key = request_key ( & key_type_logon , description , NULL ) ; kfree ( description ) ; if ( IS_ERR ( keyring_key ) ) return PTR_ERR ( keyring_key ) ; <S2SV_StartBug> if ( keyring_key -> type != & key_type_logon ) { <S2SV_EndBug> printk_once ( KERN_WARNING \"%s:<S2SV_blank>key<S2SV_blank>type<S2SV_blank>must<S2SV_blank>be<S2SV_blank>logon\\\\n\" , __func__ ) ; res = - ENOKEY ; goto out ; } <S2SV_StartBug> down_read ( & keyring_key -> sem ) ; <S2SV_EndBug> <S2SV_StartBug> ukp = user_key_payload ( keyring_key ) ; <S2SV_EndBug> if ( ukp -> datalen != sizeof ( struct fscrypt_key ) ) { res = - EINVAL ; up_read ( & keyring_key -> sem ) ; goto out ; } master_key = ( struct fscrypt_key * ) ukp -> data ; BUILD_BUG_ON ( FS_AES_128_ECB_KEY_SIZE != FS_KEY_DERIVATION_NONCE_SIZE ) ; if ( master_key -> size != FS_AES_256_XTS_KEY_SIZE ) { printk_once ( KERN_WARNING \"%s:<S2SV_blank>key<S2SV_blank>size<S2SV_blank>incorrect:<S2SV_blank>%d\\\\n\" , __func__ , master_key -> size ) ; res = - ENOKEY ; up_read ( & keyring_key -> sem ) ; goto out ; } res = derive_key_aes ( ctx -> nonce , master_key -> raw , raw_key ) ; up_read ( & keyring_key -> sem ) ; if ( res ) goto out ; crypt_info -> ci_keyring_key = keyring_key ; return 0 ; out : key_put ( keyring_key ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> keyring_key ) ; down_read ( & keyring_key -> sem ) ; <S2SV_ModStart> out ; } ukp = user_key_payload ( keyring_key ) ; if ( ukp -> datalen != sizeof ( struct fscrypt_key ) ) { res = - EINVAL ; goto out ; } master_key = ( struct fscrypt_key * ) ukp -> data ; BUILD_BUG_ON ( FS_AES_128_ECB_KEY_SIZE != FS_KEY_DERIVATION_NONCE_SIZE ) ; if ( master_key -> size != FS_AES_256_XTS_KEY_SIZE ) { printk_once ( KERN_WARNING \"%s:<S2SV_blank>key<S2SV_blank>size<S2SV_blank>incorrect:<S2SV_blank>%d\\\\n\" , __func__ , master_key -> size ) ; res = - ENOKEY ; goto out ; } res = derive_key_aes ( ctx -> nonce , master_key -> raw , raw_key ) ; out : up_read <S2SV_ModEnd> ( & keyring_key <S2SV_ModStart> sem ) ; key_put ( keyring_key ) ; return <S2SV_ModEnd> res ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7411\n\n```\nCWE-119 PHPAPI int php_var_unserialize ( UNSERIALIZE_PARAMETER ) { const unsigned char * cursor , * limit , * marker , * start ; zval * * rval_ref ; limit = max ; cursor = * p ; if ( YYCURSOR >= YYLIMIT ) { return 0 ; } if ( var_hash && cursor [ 0 ] != 'R' ) { var_push ( var_hash , rval ) ; } start = cursor ; <S2SV_StartBug> # line 495 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> { YYCTYPE yych ; static const unsigned char yybm [ ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , } ; if ( ( YYLIMIT - YYCURSOR ) < 7 ) YYFILL ( 7 ) ; yych = * YYCURSOR ; switch ( yych ) { case 'C' : case 'O' : goto yy13 ; case 'N' : goto yy5 ; case 'R' : goto yy2 ; case 'S' : goto yy10 ; case 'a' : goto yy11 ; case 'b' : goto yy6 ; case 'd' : goto yy8 ; case 'i' : goto yy7 ; case 'o' : goto yy12 ; case 'r' : goto yy4 ; case 's' : goto yy9 ; case '}' : goto yy14 ; default : goto yy16 ; } yy2 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy95 ; yy3 : <S2SV_StartBug> # line 860 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { return 0 ; } <S2SV_StartBug> # line 557 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy4 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy89 ; goto yy3 ; yy5 : yych = * ++ YYCURSOR ; if ( yych == ';' ) goto yy87 ; goto yy3 ; yy6 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy83 ; goto yy3 ; yy7 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy77 ; goto yy3 ; yy8 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy53 ; goto yy3 ; yy9 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy46 ; goto yy3 ; yy10 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy39 ; goto yy3 ; yy11 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy32 ; goto yy3 ; yy12 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy25 ; goto yy3 ; yy13 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy17 ; goto yy3 ; yy14 : ++ YYCURSOR ; <S2SV_StartBug> # line 854 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { php_error_docref ( NULL TSRMLS_CC , E_NOTICE , \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>serialized<S2SV_blank>data\" ) ; return 0 ; } <S2SV_StartBug> # line 606 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy16 : yych = * ++ YYCURSOR ; goto yy3 ; yy17 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych == '+' ) goto yy19 ; yy18 : YYCURSOR = YYMARKER ; goto yy3 ; yy19 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } goto yy18 ; yy20 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych <= '/' ) goto yy18 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 707 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , len2 , len3 , maxlen ; long elements ; char * class_name ; zend_class_entry * ce ; zend_class_entry * * pce ; int incomplete_class = 0 ; int custom_object = 0 ; zval * user_func ; zval * retval_ptr ; zval * * args [ 1 ] ; zval * arg_func_name ; if ( ! var_hash ) return 0 ; if ( * start == 'C' ) { custom_object = 1 ; } INIT_PZVAL ( * rval ) ; len2 = len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len || len == 0 ) { * p = start + 2 ; return 0 ; } class_name = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ':' ) { * p = YYCURSOR + 1 ; return 0 ; } len3 = strspn ( class_name , \"0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\\\\177\\\\200\\\\201\\\\202\\\\203\\\\204\\\\205\\\\206\\\\207\\\\210\\\\211\\\\212\\\\213\\\\214\\\\215\\\\216\\\\217\\\\220\\\\221\\\\222\\\\223\\\\224\\\\225\\\\226\\\\227\\\\230\\\\231\\\\232\\\\233\\\\234\\\\235\\\\236\\\\237\\\\240\\\\241\\\\242\\\\243\\\\244\\\\245\\\\246\\\\247\\\\250\\\\251\\\\252\\\\253\\\\254\\\\255\\\\256\\\\257\\\\260\\\\261\\\\262\\\\263\\\\264\\\\265\\\\266\\\\267\\\\270\\\\271\\\\272\\\\273\\\\274\\\\275\\\\276\\\\277\\\\300\\\\301\\\\302\\\\303\\\\304\\\\305\\\\306\\\\307\\\\310\\\\311\\\\312\\\\313\\\\314\\\\315\\\\316\\\\317\\\\320\\\\321\\\\322\\\\323\\\\324\\\\325\\\\326\\\\327\\\\330\\\\331\\\\332\\\\333\\\\334\\\\335\\\\336\\\\337\\\\340\\\\341\\\\342\\\\343\\\\344\\\\345\\\\346\\\\347\\\\350\\\\351\\\\352\\\\353\\\\354\\\\355\\\\356\\\\357\\\\360\\\\361\\\\362\\\\363\\\\364\\\\365\\\\366\\\\367\\\\370\\\\371\\\\372\\\\373\\\\374\\\\375\\\\376\\\\377\\\\\\\\\" ) ; if ( len3 != len ) { * p = YYCURSOR + len3 - len ; return 0 ; } class_name = estrndup ( class_name , len ) ; do { BG ( serialize_lock ) ++ ; if ( zend_lookup_class ( class_name , len2 , & pce TSRMLS_CC ) == SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; return 0 ; } ce = * pce ; break ; } BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; return 0 ; } if ( ( PG ( unserialize_callback_func ) == NULL ) || ( PG ( unserialize_callback_func ) [ 0 ] == '\\\\0' ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } MAKE_STD_ZVAL ( user_func ) ; ZVAL_STRING ( user_func , PG ( unserialize_callback_func ) , 1 ) ; args [ 0 ] = & arg_func_name ; MAKE_STD_ZVAL ( arg_func_name ) ; ZVAL_STRING ( arg_func_name , class_name , 1 ) ; BG ( serialize_lock ) ++ ; if ( call_user_function_ex ( CG ( function_table ) , NULL , user_func , & retval_ptr , 1 , args , 0 , NULL TSRMLS_CC ) != SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; return 0 ; } php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"defined<S2SV_blank>(%s)<S2SV_blank>but<S2SV_blank>not<S2SV_blank>found\" , user_func -> value . str . val ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; break ; } BG ( serialize_lock ) -- ; if ( retval_ptr ) { zval_ptr_dtor ( & retval_ptr ) ; } if ( EG ( exception ) ) { efree ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; return 0 ; } if ( zend_lookup_class ( class_name , len2 , & pce TSRMLS_CC ) == SUCCESS ) { ce = * pce ; } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Function<S2SV_blank>%s()<S2SV_blank>hasn\\'t<S2SV_blank>defined<S2SV_blank>the<S2SV_blank>class<S2SV_blank>it<S2SV_blank>was<S2SV_blank>called<S2SV_blank>for\" , user_func -> value . str . val ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; } zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; break ; } while ( 1 ) ; * p = YYCURSOR ; if ( custom_object ) { int ret ; ret = object_custom ( UNSERIALIZE_PASSTHRU , ce ) ; if ( ret && incomplete_class ) { php_store_class_name ( * rval , class_name , len2 ) ; } efree ( class_name ) ; return ret ; } elements = object_common1 ( UNSERIALIZE_PASSTHRU , ce ) ; if ( incomplete_class ) { php_store_class_name ( * rval , class_name , len2 ) ; } efree ( class_name ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } <S2SV_StartBug> # line 784 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy25 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy26 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; goto yy18 ; } yy26 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy27 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 698 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { if ( ! var_hash ) return 0 ; INIT_PZVAL ( * rval ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ) ; } <S2SV_StartBug> # line 818 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy32 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy33 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; goto yy18 ; yy33 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy34 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != '{' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 677 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long elements = parse_iv ( start + 2 ) ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; if ( elements < 0 ) { return 0 ; } INIT_PZVAL ( * rval ) ; array_init_size ( * rval , elements ) ; if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_ARRVAL_PP ( rval ) , elements , 0 ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; } <S2SV_StartBug> # line 860 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy39 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy40 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; goto yy18 ; yy40 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy41 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 642 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } if ( ( str = unserialize_str ( & YYCURSOR , & len , maxlen ) ) == NULL ) { return 0 ; } if ( * ( YYCURSOR ) != \\'\"\\' ) { efree ( str ) ; * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { efree ( str ) ; * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_STRINGL ( * rval , str , len , 0 ) ; return 1 ; } <S2SV_StartBug> # line 916 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy46 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy47 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; goto yy18 ; yy47 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy48 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 609 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_STRINGL ( * rval , str , len , 1 ) ; return 1 ; } <S2SV_StartBug> # line 970 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy53 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych <= ',' ) { if ( yych == '+' ) goto yy57 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy55 ; if ( yych <= '.' ) goto yy60 ; goto yy18 ; } } else { if ( yych <= 'I' ) { if ( yych <= '9' ) goto yy58 ; if ( yych <= 'H' ) goto yy18 ; goto yy56 ; } else { if ( yych != 'N' ) goto yy18 ; } } yych = * ++ YYCURSOR ; if ( yych == 'A' ) goto yy76 ; goto yy18 ; yy55 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych == '.' ) goto yy60 ; goto yy18 ; } else { if ( yych <= '9' ) goto yy58 ; if ( yych != 'I' ) goto yy18 ; } yy56 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy72 ; goto yy18 ; yy57 : yych = * ++ YYCURSOR ; if ( yych == '.' ) goto yy60 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy58 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ':' ) { if ( yych <= '.' ) { if ( yych <= '-' ) goto yy18 ; goto yy70 ; } else { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy58 ; goto yy18 ; } } else { if ( yych <= 'E' ) { if ( yych <= ';' ) goto yy63 ; if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy60 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy61 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy61 ; if ( yych <= ':' ) goto yy18 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy63 : ++ YYCURSOR ; <S2SV_StartBug> # line 599 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { # if SIZEOF_LONG == 4 use_double : # endif * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_DOUBLE ( * rval , zend_strtod ( ( const char * ) start + 2 , NULL ) ) ; return 1 ; } <S2SV_StartBug> # line 1068 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy65 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy66 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; } yy66 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy69 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy69 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; } yy67 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; if ( yych == ';' ) goto yy63 ; goto yy18 ; yy69 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; yy70 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy70 ; if ( yych <= ':' ) goto yy18 ; goto yy63 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy72 : yych = * ++ YYCURSOR ; if ( yych != 'F' ) goto yy18 ; yy73 : yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 584 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; if ( ! strncmp ( start + 2 , \"NAN\" , 3 ) ) { ZVAL_DOUBLE ( * rval , php_get_nan ( ) ) ; } else if ( ! strncmp ( start + 2 , \"INF\" , 3 ) ) { ZVAL_DOUBLE ( * rval , php_get_inf ( ) ) ; } else if ( ! strncmp ( start + 2 , \"-INF\" , 4 ) ) { ZVAL_DOUBLE ( * rval , - php_get_inf ( ) ) ; } return 1 ; } <S2SV_StartBug> # line 1142 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy76 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy73 ; goto yy18 ; yy77 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy78 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; goto yy18 ; } yy78 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy79 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 557 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { # if SIZEOF_LONG == 4 int digits = YYCURSOR - start - 3 ; if ( start [ 2 ] == '-' || start [ 2 ] == '+' ) { digits -- ; } if ( digits >= MAX_LENGTH_OF_LONG - 1 ) { if ( digits == MAX_LENGTH_OF_LONG - 1 ) { int cmp = strncmp ( YYCURSOR - MAX_LENGTH_OF_LONG , long_min_digits , MAX_LENGTH_OF_LONG - 1 ) ; if ( ! ( cmp < 0 || ( cmp == 0 && start [ 2 ] == '-' ) ) ) { goto use_double ; } } else { goto use_double ; } } # endif * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_LONG ( * rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1196 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy83 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= '2' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 550 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_BOOL ( * rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1211 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy87 : ++ YYCURSOR ; <S2SV_StartBug> # line 543 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_NULL ( * rval ) ; return 1 ; } <S2SV_StartBug> # line 1221 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy89 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy90 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; goto yy18 ; } yy90 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy91 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 520 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || var_access ( var_hash , id , & rval_ref ) != SUCCESS ) { return 0 ; } if ( * rval == * rval_ref ) return 0 ; if ( * rval != NULL ) { var_push_dtor_no_addref ( var_hash , rval ) ; } * rval = * rval_ref ; Z_ADDREF_PP ( rval ) ; Z_UNSET_ISREF_PP ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1267 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy95 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy96 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; goto yy18 ; } yy96 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy97 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 499 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || var_access ( var_hash , id , & rval_ref ) != SUCCESS ) { return 0 ; } if ( * rval != NULL ) { var_push_dtor_no_addref ( var_hash , rval ) ; } * rval = * rval_ref ; Z_ADDREF_PP ( rval ) ; Z_SET_ISREF_PP ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1311 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> } <S2SV_StartBug> # line 862 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # line 496 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" { YYCTYPE <S2SV_ModStart> : # line 861 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { return <S2SV_ModStart> } # line 558 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy4 : <S2SV_ModStart> ; # line 855 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { php_error_docref <S2SV_ModStart> } # line 607 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy16 : <S2SV_ModStart> ; # line 708 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 785 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy25 : <S2SV_ModStart> ; # line 699 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { if <S2SV_ModStart> } # line 819 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy32 : <S2SV_ModStart> ; # line 678 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 861 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy39 : <S2SV_ModStart> ; # line 643 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 917 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy46 : <S2SV_ModStart> ; # line 610 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 971 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy53 : <S2SV_ModStart> ; # line 600 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1069 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy65 : <S2SV_ModStart> ; # line 585 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1143 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy76 : <S2SV_ModStart> ; # line 558 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1197 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy83 : <S2SV_ModStart> ; # line 551 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1212 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy87 : <S2SV_ModStart> ; # line 544 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1222 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy89 : <S2SV_ModStart> ; # line 521 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 1268 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy95 : <S2SV_ModStart> ; # line 500 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 1312 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" } # <S2SV_ModStart> } # line 863 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4804\n\n```\nCWE-119 void read_boot ( DOS_FS * fs ) { struct boot_sector b ; unsigned total_sectors ; unsigned short logical_sector_size , sectors ; <S2SV_StartBug> unsigned fat_length ; <S2SV_EndBug> unsigned total_fat_entries ; off_t data_size ; fs_read ( 0 , sizeof ( b ) , & b ) ; logical_sector_size = GET_UNALIGNED_W ( b . sector_size ) ; if ( ! logical_sector_size ) die ( \"Logical<S2SV_blank>sector<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero.\" ) ; if ( logical_sector_size & ( SECTOR_SIZE - 1 ) ) die ( \"Logical<S2SV_blank>sector<S2SV_blank>size<S2SV_blank>(%d<S2SV_blank>bytes)<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>the<S2SV_blank>physical<S2SV_blank>\" \"sector<S2SV_blank>size.\" , logical_sector_size ) ; fs -> cluster_size = b . cluster_size * logical_sector_size ; if ( ! fs -> cluster_size ) die ( \"Cluster<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero.\" ) ; if ( b . fats != 2 && b . fats != 1 ) die ( \"Currently,<S2SV_blank>only<S2SV_blank>1<S2SV_blank>or<S2SV_blank>2<S2SV_blank>FATs<S2SV_blank>are<S2SV_blank>supported,<S2SV_blank>not<S2SV_blank>%d.\\\\n\" , b . fats ) ; fs -> nfats = b . fats ; sectors = GET_UNALIGNED_W ( b . sectors ) ; total_sectors = sectors ? sectors : le32toh ( b . total_sect ) ; if ( verbose ) printf ( \"Checking<S2SV_blank>we<S2SV_blank>can<S2SV_blank>access<S2SV_blank>the<S2SV_blank>last<S2SV_blank>sector<S2SV_blank>of<S2SV_blank>the<S2SV_blank>filesystem\\\\n\" ) ; fs_test ( ( off_t ) ( ( total_sectors & ~ 1 ) - 1 ) * logical_sector_size , logical_sector_size ) ; fat_length = le16toh ( b . fat_length ) ? le16toh ( b . fat_length ) : le32toh ( b . fat32_length ) ; <S2SV_StartBug> fs -> fat_start = ( off_t ) le16toh ( b . reserved ) * logical_sector_size ; <S2SV_EndBug> fs -> root_start = ( ( off_t ) le16toh ( b . reserved ) + b . fats * fat_length ) * logical_sector_size ; fs -> root_entries = GET_UNALIGNED_W ( b . dir_entries ) ; fs -> data_start = fs -> root_start + ROUND_TO_MULTIPLE ( fs -> root_entries << MSDOS_DIR_BITS , logical_sector_size ) ; <S2SV_StartBug> data_size = ( off_t ) total_sectors * logical_sector_size - fs -> data_start ; <S2SV_EndBug> fs -> data_clusters = data_size / fs -> cluster_size ; fs -> root_cluster = 0 ; fs -> fsinfo_start = 0 ; fs -> free_clusters = - 1 ; if ( ! b . fat_length && b . fat32_length ) { fs -> fat_bits = 32 ; fs -> root_cluster = le32toh ( b . root_cluster ) ; if ( ! fs -> root_cluster && fs -> root_entries ) printf ( \"Warning:<S2SV_blank>FAT32<S2SV_blank>root<S2SV_blank>dir<S2SV_blank>not<S2SV_blank>in<S2SV_blank>cluster<S2SV_blank>chain!<S2SV_blank>\" \"Compatibility<S2SV_blank>mode...\\\\n\" ) ; else if ( ! fs -> root_cluster && ! fs -> root_entries ) die ( \"No<S2SV_blank>root<S2SV_blank>directory!\" ) ; else if ( fs -> root_cluster && fs -> root_entries ) printf ( \"Warning:<S2SV_blank>FAT32<S2SV_blank>root<S2SV_blank>dir<S2SV_blank>is<S2SV_blank>in<S2SV_blank>a<S2SV_blank>cluster<S2SV_blank>chain,<S2SV_blank>but<S2SV_blank>\" \"a<S2SV_blank>separate<S2SV_blank>root<S2SV_blank>dir\\\\n\" \"<S2SV_blank><S2SV_blank>area<S2SV_blank>is<S2SV_blank>defined.<S2SV_blank>Cannot<S2SV_blank>fix<S2SV_blank>this<S2SV_blank>easily.\\\\n\" ) ; if ( fs -> data_clusters < FAT16_THRESHOLD ) printf ( \"Warning:<S2SV_blank>Filesystem<S2SV_blank>is<S2SV_blank>FAT32<S2SV_blank>according<S2SV_blank>to<S2SV_blank>fat_length<S2SV_blank>\" \"and<S2SV_blank>fat32_length<S2SV_blank>fields,\\\\n\" \"<S2SV_blank><S2SV_blank>but<S2SV_blank>has<S2SV_blank>only<S2SV_blank>%lu<S2SV_blank>clusters,<S2SV_blank>less<S2SV_blank>than<S2SV_blank>the<S2SV_blank>required<S2SV_blank>\" \"minimum<S2SV_blank>of<S2SV_blank>%d.\\\\n\" \"<S2SV_blank><S2SV_blank>This<S2SV_blank>may<S2SV_blank>lead<S2SV_blank>to<S2SV_blank>problems<S2SV_blank>on<S2SV_blank>some<S2SV_blank>systems.\\\\n\" , ( unsigned long ) fs -> data_clusters , FAT16_THRESHOLD ) ; check_fat_state_bit ( fs , & b ) ; fs -> backupboot_start = le16toh ( b . backup_boot ) * logical_sector_size ; check_backup_boot ( fs , & b , logical_sector_size ) ; read_fsinfo ( fs , & b , logical_sector_size ) ; } else if ( ! atari_format ) { fs -> fat_bits = ( fs -> data_clusters >= FAT12_THRESHOLD ) ? 16 : 12 ; if ( fs -> data_clusters >= FAT16_THRESHOLD ) die ( \"Too<S2SV_blank>many<S2SV_blank>clusters<S2SV_blank>(%lu)<S2SV_blank>for<S2SV_blank>FAT16<S2SV_blank>filesystem.\" , fs -> data_clusters ) ; check_fat_state_bit ( fs , & b ) ; } else { fs -> fat_bits = 16 ; if ( fs -> data_clusters + 2 > fat_length * logical_sector_size * 8 / 16 || ( total_sectors == 720 || total_sectors == 1440 || total_sectors == 2880 ) ) fs -> fat_bits = 12 ; } fs -> eff_fat_bits = ( fs -> fat_bits == 32 ) ? 28 : fs -> fat_bits ; fs -> fat_size = fat_length * logical_sector_size ; fs -> label = calloc ( 12 , sizeof ( uint8_t ) ) ; if ( fs -> fat_bits == 12 || fs -> fat_bits == 16 ) { struct boot_sector_16 * b16 = ( struct boot_sector_16 * ) & b ; if ( b16 -> extended_sig == 0x29 ) memmove ( fs -> label , b16 -> label , 11 ) ; else fs -> label = NULL ; } else if ( fs -> fat_bits == 32 ) { if ( b . extended_sig == 0x29 ) memmove ( fs -> label , & b . label , 11 ) ; else fs -> label = NULL ; } total_fat_entries = ( uint64_t ) fs -> fat_size * 8 / fs -> fat_bits ; if ( fs -> data_clusters > total_fat_entries - 2 ) die ( \"Filesystem<S2SV_blank>has<S2SV_blank>%u<S2SV_blank>clusters<S2SV_blank>but<S2SV_blank>only<S2SV_blank>space<S2SV_blank>for<S2SV_blank>%u<S2SV_blank>FAT<S2SV_blank>entries.\" , fs -> data_clusters , total_fat_entries - 2 ) ; if ( ! fs -> root_entries && ! fs -> root_cluster ) die ( \"Root<S2SV_blank>directory<S2SV_blank>has<S2SV_blank>zero<S2SV_blank>size.\" ) ; if ( fs -> root_entries & ( MSDOS_DPS - 1 ) ) die ( \"Root<S2SV_blank>directory<S2SV_blank>(%d<S2SV_blank>entries)<S2SV_blank>doesn\\'t<S2SV_blank>span<S2SV_blank>an<S2SV_blank>integral<S2SV_blank>number<S2SV_blank>of<S2SV_blank>\" \"sectors.\" , fs -> root_entries ) ; if ( logical_sector_size & ( SECTOR_SIZE - 1 ) ) die ( \"Logical<S2SV_blank>sector<S2SV_blank>size<S2SV_blank>(%d<S2SV_blank>bytes)<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>the<S2SV_blank>physical<S2SV_blank>\" \"sector<S2SV_blank>size.\" , logical_sector_size ) ; # if 0 if ( ! atari_format && ( ! b . secs_track || ! b . heads ) ) die ( \"Invalid<S2SV_blank>disk<S2SV_blank>format<S2SV_blank>in<S2SV_blank>boot<S2SV_blank>sector.\" ) ; # endif if ( verbose ) dump_boot ( fs , & b , logical_sector_size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , sectors ; off_t <S2SV_ModEnd> fat_length ; unsigned <S2SV_ModStart> fat32_length ) ; if ( ! fat_length ) die ( \"FAT<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero.\" ) ; <S2SV_ModStart> fs -> data_start ; if ( data_size < fs -> cluster_size ) die ( \"Filesystem<S2SV_blank>has<S2SV_blank>no<S2SV_blank>space<S2SV_blank>for<S2SV_blank>any<S2SV_blank>data<S2SV_blank>clusters\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8645\n\n```\nCWE-284 int tcp_v4_rcv ( struct sk_buff * skb ) { struct net * net = dev_net ( skb -> dev ) ; const struct iphdr * iph ; const struct tcphdr * th ; bool refcounted ; struct sock * sk ; int ret ; if ( skb -> pkt_type != PACKET_HOST ) goto discard_it ; __TCP_INC_STATS ( net , TCP_MIB_INSEGS ) ; if ( ! pskb_may_pull ( skb , sizeof ( struct tcphdr ) ) ) goto discard_it ; th = ( const struct tcphdr * ) skb -> data ; if ( unlikely ( th -> doff < sizeof ( struct tcphdr ) / 4 ) ) goto bad_packet ; if ( ! pskb_may_pull ( skb , th -> doff * 4 ) ) goto discard_it ; if ( skb_checksum_init ( skb , IPPROTO_TCP , inet_compute_pseudo ) ) goto csum_error ; th = ( const struct tcphdr * ) skb -> data ; iph = ip_hdr ( skb ) ; memmove ( & TCP_SKB_CB ( skb ) -> header . h4 , IPCB ( skb ) , sizeof ( struct inet_skb_parm ) ) ; barrier ( ) ; TCP_SKB_CB ( skb ) -> seq = ntohl ( th -> seq ) ; TCP_SKB_CB ( skb ) -> end_seq = ( TCP_SKB_CB ( skb ) -> seq + th -> syn + th -> fin + skb -> len - th -> doff * 4 ) ; TCP_SKB_CB ( skb ) -> ack_seq = ntohl ( th -> ack_seq ) ; TCP_SKB_CB ( skb ) -> tcp_flags = tcp_flag_byte ( th ) ; TCP_SKB_CB ( skb ) -> tcp_tw_isn = 0 ; TCP_SKB_CB ( skb ) -> ip_dsfield = ipv4_get_dsfield ( iph ) ; TCP_SKB_CB ( skb ) -> sacked = 0 ; lookup : sk = __inet_lookup_skb ( & tcp_hashinfo , skb , __tcp_hdrlen ( th ) , th -> source , th -> dest , & refcounted ) ; if ( ! sk ) goto no_tcp_socket ; process : if ( sk -> sk_state == TCP_TIME_WAIT ) goto do_time_wait ; if ( sk -> sk_state == TCP_NEW_SYN_RECV ) { struct request_sock * req = inet_reqsk ( sk ) ; struct sock * nsk ; sk = req -> rsk_listener ; if ( unlikely ( tcp_v4_inbound_md5_hash ( sk , skb ) ) ) { sk_drops_add ( sk , skb ) ; reqsk_put ( req ) ; goto discard_it ; } if ( unlikely ( sk -> sk_state != TCP_LISTEN ) ) { inet_csk_reqsk_queue_drop_and_put ( sk , req ) ; goto lookup ; } sock_hold ( sk ) ; refcounted = true ; nsk = tcp_check_req ( sk , skb , req , false ) ; if ( ! nsk ) { reqsk_put ( req ) ; goto discard_and_relse ; } if ( nsk == sk ) { reqsk_put ( req ) ; } else if ( tcp_child_process ( sk , nsk , skb ) ) { tcp_v4_send_reset ( nsk , skb ) ; goto discard_and_relse ; } else { sock_put ( sk ) ; return 0 ; } } if ( unlikely ( iph -> ttl < inet_sk ( sk ) -> min_ttl ) ) { __NET_INC_STATS ( net , LINUX_MIB_TCPMINTTLDROP ) ; goto discard_and_relse ; } if ( ! xfrm4_policy_check ( sk , XFRM_POLICY_IN , skb ) ) goto discard_and_relse ; if ( tcp_v4_inbound_md5_hash ( sk , skb ) ) goto discard_and_relse ; nf_reset ( skb ) ; <S2SV_StartBug> if ( sk_filter ( sk , skb ) ) <S2SV_EndBug> <S2SV_StartBug> goto discard_and_relse ; <S2SV_EndBug> skb -> dev = NULL ; if ( sk -> sk_state == TCP_LISTEN ) { ret = tcp_v4_do_rcv ( sk , skb ) ; goto put_and_return ; } sk_incoming_cpu_update ( sk ) ; bh_lock_sock_nested ( sk ) ; tcp_segs_in ( tcp_sk ( sk ) , skb ) ; ret = 0 ; if ( ! sock_owned_by_user ( sk ) ) { if ( ! tcp_prequeue ( sk , skb ) ) ret = tcp_v4_do_rcv ( sk , skb ) ; } else if ( tcp_add_backlog ( sk , skb ) ) { goto discard_and_relse ; } bh_unlock_sock ( sk ) ; put_and_return : if ( refcounted ) sock_put ( sk ) ; return ret ; no_tcp_socket : if ( ! xfrm4_policy_check ( NULL , XFRM_POLICY_IN , skb ) ) goto discard_it ; if ( tcp_checksum_complete ( skb ) ) { csum_error : __TCP_INC_STATS ( net , TCP_MIB_CSUMERRORS ) ; bad_packet : __TCP_INC_STATS ( net , TCP_MIB_INERRS ) ; } else { tcp_v4_send_reset ( NULL , skb ) ; } discard_it : kfree_skb ( skb ) ; return 0 ; discard_and_relse : sk_drops_add ( sk , skb ) ; if ( refcounted ) sock_put ( sk ) ; goto discard_it ; do_time_wait : if ( ! xfrm4_policy_check ( NULL , XFRM_POLICY_IN , skb ) ) { inet_twsk_put ( inet_twsk ( sk ) ) ; goto discard_it ; } if ( tcp_checksum_complete ( skb ) ) { inet_twsk_put ( inet_twsk ( sk ) ) ; goto csum_error ; } switch ( tcp_timewait_state_process ( inet_twsk ( sk ) , skb , th ) ) { case TCP_TW_SYN : { struct sock * sk2 = inet_lookup_listener ( dev_net ( skb -> dev ) , & tcp_hashinfo , skb , __tcp_hdrlen ( th ) , iph -> saddr , th -> source , iph -> daddr , th -> dest , inet_iif ( skb ) ) ; if ( sk2 ) { inet_twsk_deschedule_put ( inet_twsk ( sk ) ) ; sk = sk2 ; refcounted = false ; goto process ; } } case TCP_TW_ACK : tcp_v4_timewait_ack ( sk , skb ) ; break ; case TCP_TW_RST : tcp_v4_send_reset ( sk , skb ) ; inet_twsk_deschedule_put ( inet_twsk ( sk ) ) ; goto discard_it ; case TCP_TW_SUCCESS : ; } goto discard_it ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( tcp_filter <S2SV_ModEnd> ( sk , <S2SV_ModStart> ) goto discard_and_relse ; th = ( const struct tcphdr * ) skb -> data ; iph = ip_hdr ( skb )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void accumulate_stats ( FIRSTPASS_STATS * section , const FIRSTPASS_STATS * frame ) { section -> frame += frame -> frame ; <S2SV_StartBug> section -> spatial_layer_id = frame -> spatial_layer_id ; <S2SV_EndBug> section -> intra_error += frame -> intra_error ; section -> coded_error += frame -> coded_error ; section -> sr_coded_error += frame -> sr_coded_error ; <S2SV_StartBug> section -> ssim_weighted_pred_err += frame -> ssim_weighted_pred_err ; <S2SV_EndBug> section -> pcnt_inter += frame -> pcnt_inter ; section -> pcnt_motion += frame -> pcnt_motion ; section -> pcnt_second_ref += frame -> pcnt_second_ref ; <S2SV_StartBug> section -> pcnt_neutral += frame -> pcnt_neutral ; <S2SV_EndBug> section -> MVr += frame -> MVr ; section -> mvr_abs += frame -> mvr_abs ; section -> MVc += frame -> MVc ; section -> mvc_abs += frame -> mvc_abs ; section -> MVrv += frame -> MVrv ; section -> MVcv += frame -> MVcv ; section -> mv_in_out_count += frame -> mv_in_out_count ; section -> new_mv_count += frame -> new_mv_count ; section -> count += frame -> count ; section -> duration += frame -> duration ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; section -> weight += frame -> weight ; section -> <S2SV_ModStart> ; section -> <S2SV_ModEnd> pcnt_inter += frame <S2SV_ModStart> frame -> pcnt_neutral ; section -> intra_skip_pct += frame -> intra_skip_pct ; section -> inactive_zone_rows += frame -> inactive_zone_rows ; section -> inactive_zone_cols += frame -> inactive_zone_cols\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12993\n\n```\nCWE-125 static int juniper_parse_header ( netdissect_options * ndo , const u_char * p , const struct pcap_pkthdr * h , struct juniper_l2info_t * l2info ) { const struct juniper_cookie_table_t * lp = juniper_cookie_table ; u_int idx , jnx_ext_len , jnx_header_len = 0 ; uint8_t tlv_type , tlv_len ; uint32_t control_word ; int tlv_value ; const u_char * tptr ; l2info -> header_len = 0 ; l2info -> cookie_len = 0 ; l2info -> proto = 0 ; l2info -> length = h -> len ; l2info -> caplen = h -> caplen ; ND_TCHECK2 ( p [ 0 ] , 4 ) ; l2info -> flags = p [ 3 ] ; l2info -> direction = p [ 3 ] & JUNIPER_BPF_PKT_IN ; if ( EXTRACT_24BITS ( p ) != JUNIPER_MGC_NUMBER ) { ND_PRINT ( ( ndo , \"no<S2SV_blank>magic-number<S2SV_blank>found!\" ) ) ; return 0 ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%3s<S2SV_blank>\" , tok2str ( juniper_direction_values , \"---\" , l2info -> direction ) ) ) ; jnx_header_len = 4 ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\tJuniper<S2SV_blank>PCAP<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( jnx_flag_values , \"none\" , l2info -> flags ) ) ) ; if ( ( l2info -> flags & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) { tptr = p + jnx_header_len ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; jnx_ext_len = EXTRACT_16BITS ( tptr ) ; jnx_header_len += 2 ; tptr += 2 ; jnx_header_len += jnx_ext_len ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>PCAP<S2SV_blank>Extension(s)<S2SV_blank>total<S2SV_blank>length<S2SV_blank>%u\" , jnx_ext_len ) ) ; ND_TCHECK2 ( tptr [ 0 ] , jnx_ext_len ) ; while ( jnx_ext_len > JUNIPER_EXT_TLV_OVERHEAD ) { tlv_type = * ( tptr ++ ) ; tlv_len = * ( tptr ++ ) ; tlv_value = 0 ; if ( tlv_type == 0 || tlv_len == 0 ) break ; if ( tlv_len + JUNIPER_EXT_TLV_OVERHEAD > jnx_ext_len ) goto trunc ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Extension<S2SV_blank>TLV<S2SV_blank>#%u,<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>value<S2SV_blank>\" , tok2str ( jnx_ext_tlv_values , \"Unknown\" , tlv_type ) , tlv_type , tlv_len ) ) ; tlv_value = juniper_read_tlv_value ( tptr , tlv_type , tlv_len ) ; switch ( tlv_type ) { case JUNIPER_EXT_TLV_IFD_NAME : break ; case JUNIPER_EXT_TLV_IFD_MEDIATYPE : case JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%u)\" , tok2str ( juniper_ifmt_values , \"Unknown\" , tlv_value ) , tlv_value ) ) ; } break ; case JUNIPER_EXT_TLV_IFL_ENCAPS : case JUNIPER_EXT_TLV_TTP_IFL_ENCAPS : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%u)\" , tok2str ( juniper_ifle_values , \"Unknown\" , tlv_value ) , tlv_value ) ) ; } break ; case JUNIPER_EXT_TLV_IFL_IDX : case JUNIPER_EXT_TLV_IFL_UNIT : case JUNIPER_EXT_TLV_IFD_IDX : default : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%u\" , tlv_value ) ) ; } break ; } tptr += tlv_len ; jnx_ext_len -= tlv_len + JUNIPER_EXT_TLV_OVERHEAD ; } if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t-----original<S2SV_blank>packet-----\\\\n\\\\t\" ) ) ; } if ( ( l2info -> flags & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"no-L2-hdr,<S2SV_blank>\" ) ) ; ND_TCHECK2 ( p [ jnx_header_len + 4 ] , 1 ) ; if ( ip_heuristic_guess ( ndo , p + jnx_header_len + 4 , l2info -> length - ( jnx_header_len + 4 ) ) == 0 ) ND_PRINT ( ( ndo , \"no<S2SV_blank>IP-hdr<S2SV_blank>found!\" ) ) ; l2info -> header_len = jnx_header_len + 4 ; return 0 ; } l2info -> header_len = jnx_header_len ; p += l2info -> header_len ; l2info -> length -= l2info -> header_len ; l2info -> caplen -= l2info -> header_len ; <S2SV_StartBug> while ( lp -> s != NULL ) { <S2SV_EndBug> if ( lp -> pictype == l2info -> pictype ) { l2info -> cookie_len += lp -> cookie_len ; switch ( p [ 0 ] ) { case LS_COOKIE_ID : l2info -> cookie_type = LS_COOKIE_ID ; l2info -> cookie_len += 2 ; break ; case AS_COOKIE_ID : l2info -> cookie_type = AS_COOKIE_ID ; l2info -> cookie_len = 8 ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } # ifdef DLT_JUNIPER_MFR if ( l2info -> pictype == DLT_JUNIPER_MFR && ( p [ 0 ] & MFR_BE_MASK ) == MFR_BE_MASK ) { l2info -> cookie_len = 0 ; } # endif l2info -> header_len += l2info -> cookie_len ; l2info -> length -= l2info -> cookie_len ; l2info -> caplen -= l2info -> cookie_len ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%s-PIC,<S2SV_blank>cookie-len<S2SV_blank>%u\" , lp -> s , l2info -> cookie_len ) ) ; if ( l2info -> cookie_len > 0 ) { ND_TCHECK2 ( p [ 0 ] , l2info -> cookie_len ) ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>cookie<S2SV_blank>0x\" ) ) ; for ( idx = 0 ; idx < l2info -> cookie_len ; idx ++ ) { l2info -> cookie [ idx ] = p [ idx ] ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%02x\" , p [ idx ] ) ) ; } } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \":<S2SV_blank>\" ) ) ; l2info -> proto = EXTRACT_16BITS ( p + l2info -> cookie_len ) ; break ; } ++ lp ; } p += l2info -> cookie_len ; switch ( l2info -> pictype ) { # ifdef DLT_JUNIPER_MLPPP case DLT_JUNIPER_MLPPP : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : l2info -> bundle = l2info -> cookie [ 1 ] ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } break ; # endif # ifdef DLT_JUNIPER_MLFR case DLT_JUNIPER_MLFR : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : <S2SV_StartBug> l2info -> bundle = l2info -> cookie [ 1 ] ; <S2SV_EndBug> l2info -> proto = EXTRACT_16BITS ( p ) ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; } break ; # endif # ifdef DLT_JUNIPER_MFR case DLT_JUNIPER_MFR : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : <S2SV_StartBug> l2info -> bundle = l2info -> cookie [ 1 ] ; <S2SV_EndBug> l2info -> proto = EXTRACT_16BITS ( p ) ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } break ; # endif # ifdef DLT_JUNIPER_ATM2 case DLT_JUNIPER_ATM2 : ND_TCHECK2 ( p [ 0 ] , 4 ) ; if ( l2info -> cookie [ 7 ] & ATM2_PKT_TYPE_MASK ) { control_word = EXTRACT_32BITS ( p ) ; switch ( control_word ) { case 0 : case 0x08000000 : case 0x08380000 : l2info -> header_len += 4 ; break ; default : break ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"control-word<S2SV_blank>0x%08x<S2SV_blank>\" , control_word ) ) ; } break ; # endif # ifdef DLT_JUNIPER_GGSN case DLT_JUNIPER_GGSN : break ; # endif # ifdef DLT_JUNIPER_ATM1 case DLT_JUNIPER_ATM1 : break ; # endif # ifdef DLT_JUNIPER_PPP case DLT_JUNIPER_PPP : break ; # endif # ifdef DLT_JUNIPER_CHDLC case DLT_JUNIPER_CHDLC : break ; # endif # ifdef DLT_JUNIPER_ETHER case DLT_JUNIPER_ETHER : break ; # endif # ifdef DLT_JUNIPER_FRELAY case DLT_JUNIPER_FRELAY : break ; # endif default : ND_PRINT ( ( ndo , \"Unknown<S2SV_blank>Juniper<S2SV_blank>DLT_<S2SV_blank>type<S2SV_blank>%u:<S2SV_blank>\" , l2info -> pictype ) ) ; break ; } if ( ndo -> ndo_eflag > 1 ) ND_PRINT ( ( ndo , \"hlen<S2SV_blank>%u,<S2SV_blank>proto<S2SV_blank>0x%04x,<S2SV_blank>\" , l2info -> header_len , l2info -> proto ) ) ; return 1 ; trunc : ND_PRINT ( ( ndo , \"[|juniper_hdr],<S2SV_blank>length<S2SV_blank>%u\" , h -> len ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> header_len ; ND_TCHECK ( p [ 0 ] ) ; <S2SV_ModStart> case LS_COOKIE_ID : ND_TCHECK2 ( p [ 0 ] , 2 ) ; <S2SV_ModStart> case LS_COOKIE_ID : ND_TCHECK2 ( p [ 0 ] , 2 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 const char * cJSON_GetErrorPtr ( void ) { <S2SV_StartBug> return ep ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return global_ep <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0552\n\n```\nCWE-000 WORD32 ih264d_parse_decode_slice ( UWORD8 u1_is_idr_slice , UWORD8 u1_nal_ref_idc , dec_struct_t * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; dec_pic_params_t * ps_pps ; dec_seq_params_t * ps_seq ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; pocstruct_t s_tmp_poc ; WORD32 i_delta_poc [ 2 ] ; WORD32 i4_poc = 0 ; UWORD16 u2_first_mb_in_slice , u2_frame_num ; UWORD8 u1_field_pic_flag , u1_redundant_pic_cnt = 0 , u1_slice_type ; UWORD32 u4_idr_pic_id = 0 ; UWORD8 u1_bottom_field_flag , u1_pic_order_cnt_type ; UWORD8 u1_nal_unit_type ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; WORD8 i1_is_end_of_poc ; WORD32 ret , end_of_frame ; WORD32 prev_slice_err , num_mb_skipped ; UWORD8 u1_mbaff ; pocstruct_t * ps_cur_poc ; UWORD32 u4_temp ; WORD32 i_temp ; UWORD32 u4_call_end_of_pic = 0 ; ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read_slc = 0 ; u2_first_mb_in_slice = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u2_first_mb_in_slice > ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) ) { return ERROR_CORRUPTED_SLICE ; } if ( ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) <= ps_dec -> u2_cur_mb_addr ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { return ERROR_CORRUPTED_SLICE ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>first_mb_in_slice\" , u2_first_mb_in_slice ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > 9 ) return ERROR_INV_SLC_TYPE_T ; u1_slice_type = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_type\" , ( u1_slice_type ) ) ; ps_dec -> u1_sl_typ_5_9 = 0 ; if ( u1_slice_type > 4 ) { u1_slice_type -= 5 ; ps_dec -> u1_sl_typ_5_9 = 1 ; } { UWORD32 skip ; if ( ( ps_dec -> i4_app_skip_mode == IVD_SKIP_PB ) || ( ps_dec -> i4_dec_skip_mode == IVD_SKIP_PB ) ) { UWORD32 u4_bit_stream_offset = 0 ; if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else if ( ( I_SLICE == u1_slice_type ) && ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else { skip = 1 ; } if ( ( 0 == u2_first_mb_in_slice ) && ( 1 == ps_dec -> u4_prev_nal_skipped ) ) { skip = 0 ; } if ( skip ) { ps_dec -> u4_prev_nal_skipped = 1 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_PB ; return 0 ; } else { if ( 1 == ps_dec -> u4_prev_nal_skipped ) { ps_dec -> u4_return_to_app = 1 ; return 0 ; } } } } u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp & MASK_ERR_PIC_SET_ID ) <S2SV_StartBug> return ERROR_INV_SPS_PPS_T ; <S2SV_EndBug> COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_parameter_set_id\" , u4_temp ) ; ps_pps = & ps_dec -> ps_pps [ u4_temp ] ; if ( FALSE == ps_pps -> u1_is_valid ) { <S2SV_StartBug> return ERROR_INV_SPS_PPS_T ; <S2SV_EndBug> } ps_seq = ps_pps -> ps_sps ; if ( ! ps_seq ) <S2SV_StartBug> return ERROR_INV_SPS_PPS_T ; <S2SV_EndBug> if ( FALSE == ps_seq -> u1_is_valid ) <S2SV_StartBug> return ERROR_INV_SPS_PPS_T ; <S2SV_EndBug> u2_frame_num = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_bits_in_frm_num ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>frame_num\" , u2_frame_num ) ; if ( ! ps_seq -> u1_frame_mbs_only_flag ) { u1_field_pic_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>field_pic_flag\" , u1_field_pic_flag ) ; u1_bottom_field_flag = 0 ; if ( u1_field_pic_flag ) { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan_fld ; u1_bottom_field_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>bottom_field_flag\" , u1_bottom_field_flag ) ; } else { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } } else { u1_field_pic_flag = 0 ; u1_bottom_field_flag = 0 ; ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } u1_nal_unit_type = SLICE_NAL ; if ( u1_is_idr_slice ) { if ( 0 == u1_field_pic_flag ) { ps_dec -> u1_top_bottom_decoded = TOP_FIELD_ONLY | BOT_FIELD_ONLY ; } u1_nal_unit_type = IDR_SLICE_NAL ; u4_idr_pic_id = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_idr_pic_id > 65535 ) <S2SV_StartBug> return ERROR_INV_SPS_PPS_T ; <S2SV_EndBug> COPYTHECONTEXT ( \"SH:<S2SV_blank><S2SV_blank>\" , u4_idr_pic_id ) ; } i_delta_poc [ 0 ] = i_delta_poc [ 1 ] = 0 ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; u1_pic_order_cnt_type = ps_seq -> u1_pic_order_cnt_type ; if ( u1_pic_order_cnt_type == 0 ) { i_temp = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_log2_max_pic_order_cnt_lsb_minus ) ; if ( i_temp < 0 || i_temp >= ps_seq -> i4_max_pic_order_cntLsb ) <S2SV_StartBug> return ERROR_INV_SPS_PPS_T ; <S2SV_EndBug> s_tmp_poc . i4_pic_order_cnt_lsb = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_order_cnt_lsb\" , s_tmp_poc . i4_pic_order_cnt_lsb ) ; if ( ( ps_pps -> u1_pic_order_present_flag == 1 ) && ( ! u1_field_pic_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt_bottom = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt_bottom\" , s_tmp_poc . i4_delta_pic_order_cnt_bottom ) ; } } s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = 0 ; if ( u1_pic_order_cnt_type == 1 && ( ! ps_seq -> u1_delta_pic_order_always_zero_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[0]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] ) ; if ( ps_pps -> u1_pic_order_present_flag && ! u1_field_pic_flag ) { s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[1]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] ) ; } } if ( ps_pps -> u1_redundant_pic_cnt_present_flag ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_REDUNDANT_PIC_CNT ) <S2SV_StartBug> return ERROR_INV_SPS_PPS_T ; <S2SV_EndBug> u1_redundant_pic_cnt = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>redundant_pic_cnt\" , u1_redundant_pic_cnt ) ; } i1_is_end_of_poc = 0 ; if ( ! ps_dec -> u1_first_slice_in_stream ) { i1_is_end_of_poc = ih264d_is_end_of_pic ( u2_frame_num , u1_nal_ref_idc , & s_tmp_poc , & ps_dec -> s_cur_pic_poc , ps_cur_slice , u1_pic_order_cnt_type , u1_nal_unit_type , u4_idr_pic_id , u1_field_pic_flag , u1_bottom_field_flag ) ; if ( ( ps_dec -> u4_first_slice_in_pic == 2 ) && ( i1_is_end_of_poc == 0 ) ) { ps_dec -> ps_dec_err_status -> u1_err_flag |= REJECT_CUR_PIC ; i1_is_end_of_poc = 1 ; } else { ps_dec -> ps_dec_err_status -> u1_err_flag &= MASK_REJECT_CUR_PIC ; } } u1_mbaff = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; prev_slice_err = 0 ; if ( i1_is_end_of_poc || ps_dec -> u1_first_slice_in_stream ) { if ( u2_frame_num != ps_dec -> u2_prv_frame_num && ps_dec -> u1_top_bottom_decoded != 0 && ps_dec -> u1_top_bottom_decoded != ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) ) { ps_dec -> u1_dangling_field = 1 ; if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; } else { prev_slice_err = 2 ; } if ( ps_dec -> u1_top_bottom_decoded == TOP_FIELD_ONLY ) ps_cur_slice -> u1_bottom_field_flag = 1 ; else ps_cur_slice -> u1_bottom_field_flag = 0 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & ps_dec -> s_cur_pic_poc ; u1_is_idr_slice = ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ; } else if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice > 0 ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; ps_cur_poc = & s_tmp_poc ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; ps_cur_slice -> u1_mbaff_frame_flag = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; } } else { if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; } else { prev_slice_err = 2 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; } ps_cur_poc = & s_tmp_poc ; } } else { if ( ( u2_first_mb_in_slice << u1_mbaff ) > ps_dec -> u2_total_mbs_coded ) { prev_slice_err = 2 ; num_mb_skipped = ( u2_first_mb_in_slice << u1_mbaff ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } else if ( ( u2_first_mb_in_slice << u1_mbaff ) < ps_dec -> u2_total_mbs_coded ) { return ERROR_CORRUPTED_SLICE ; } } if ( prev_slice_err ) { ret = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , u1_is_idr_slice , u2_frame_num , ps_cur_poc , prev_slice_err ) ; if ( ps_dec -> u1_dangling_field == 1 ) { ps_dec -> u1_second_field = 1 - ps_dec -> u1_second_field ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_dec -> u2_prv_frame_num = u2_frame_num ; ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_DANGLING_FIELD_IN_PIC ; } if ( prev_slice_err == 2 ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_IN_LAST_SLICE_OF_PIC ; } if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } if ( ret != OK ) return ret ; i1_is_end_of_poc = 0 ; } if ( ps_dec -> u4_first_slice_in_pic == 0 ) { ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } if ( ( ps_dec -> u1_separate_parse == 0 ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { ps_dec -> ps_decode_cur_slice ++ ; } ps_dec -> u1_slice_header_done = 0 ; if ( ! ps_dec -> u1_first_slice_in_stream ) { UWORD8 uc_mbs_exceed = 0 ; if ( ps_dec -> u2_total_mbs_coded == ( ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ) ) { if ( ps_dec -> u4_first_slice_in_pic == 0 ) uc_mbs_exceed = 1 ; } if ( i1_is_end_of_poc || uc_mbs_exceed ) { if ( 1 == ps_dec -> u1_last_pic_not_decoded ) { ret = ih264d_end_of_pic_dispbuf_mgr ( ps_dec ) ; if ( ret != OK ) return ret ; ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; # if WIN32 H264_DEC_DEBUG_PRINT ( \"<S2SV_blank>------<S2SV_blank>PIC<S2SV_blank>SKIPPED<S2SV_blank>------\\\\n\" ) ; # endif return RET_LAST_SKIP ; } else { ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; } } } if ( u1_field_pic_flag ) { ps_dec -> u2_prv_frame_num = u2_frame_num ; } if ( ps_cur_slice -> u1_mmco_equalto5 ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; if ( ! ps_cur_slice -> u1_field_pic_flag ) { i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; } else if ( ! ps_cur_slice -> u1_bottom_field_flag ) i4_temp_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; else i4_temp_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_poc = i4_temp_poc ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { ret = ih264d_decode_pic_order_cnt ( u1_is_idr_slice , u2_frame_num , & ps_dec -> s_prev_pic_poc , & s_tmp_poc , ps_cur_slice , ps_pps , u1_nal_ref_idc , u1_bottom_field_flag , u1_field_pic_flag , & i4_poc ) ; if ( ret != OK ) return ret ; if ( i4_poc >= ps_dec -> i4_max_poc ) ps_dec -> i4_max_poc = i4_poc ; if ( i4_poc == 0 ) { ps_dec -> i4_prev_max_display_seq = ps_dec -> i4_prev_max_display_seq + ps_dec -> i4_max_poc + ps_dec -> u1_max_dec_frame_buffering + 1 ; ps_dec -> i4_max_poc = 0 ; } } ps_cur_slice -> i4_delta_pic_order_cnt [ 0 ] = i_delta_poc [ 0 ] ; ps_cur_slice -> i4_delta_pic_order_cnt [ 1 ] = i_delta_poc [ 1 ] ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u2_first_mb_in_slice = u2_first_mb_in_slice ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> u1_slice_type = u1_slice_type ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; if ( ps_seq -> u1_frame_mbs_only_flag ) ps_cur_slice -> u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; else ps_cur_slice -> u1_direct_8x8_inference_flag = 1 ; if ( u1_slice_type == B_SLICE ) { ps_cur_slice -> u1_direct_spatial_mv_pred_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>direct_spatial_mv_pred_flag\" , ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ; if ( ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ps_cur_slice -> pf_decodeDirect = ih264d_decode_spatial_direct ; else ps_cur_slice -> pf_decodeDirect = ih264d_decode_temporal_direct ; if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaffB ; } else { if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice == 0 ) { ret = ih264d_start_of_pic ( ps_dec , i4_poc , & s_tmp_poc , u2_frame_num , ps_pps ) ; if ( ret != OK ) return ret ; } ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } { UWORD8 uc_nofield_nombaff ; uc_nofield_nombaff = ( ( ps_dec -> ps_cur_slice -> u1_field_pic_flag == 0 ) && ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag == 0 ) && ( u1_slice_type != B_SLICE ) && ( ps_dec -> ps_cur_pps -> u1_wted_pred_flag == 0 ) ) ; if ( uc_nofield_nombaff ) { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; } else { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_mp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_mp ; } } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u4_frm_sei_sync == u2_frame_num ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; ps_err -> u4_frm_sei_sync = SYNC_FRM_DEFAULT ; } ps_err -> u4_cur_frm = u2_frame_num ; } { WORD32 i4_skip_b_pic , i4_skip_p_pic ; i4_skip_b_pic = ( ps_dec -> u4_skip_frm_mask & B_SLC_BIT ) && ( B_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; i4_skip_p_pic = ( ps_dec -> u4_skip_frm_mask & P_SLC_BIT ) && ( P_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; if ( i4_skip_b_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } if ( i4_skip_p_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } } { UWORD16 u2_mb_x , u2_mb_y ; ps_dec -> i4_submb_ofst = ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) * SUB_BLK_SIZE ) - SUB_BLK_SIZE ; if ( u2_first_mb_in_slice ) { UWORD8 u1_mb_aff ; UWORD8 u1_field_pic ; UWORD16 u2_frm_wd_in_mbs ; u2_frm_wd_in_mbs = ps_seq -> u2_frm_wd_in_mbs ; u1_mb_aff = ps_cur_slice -> u1_mbaff_frame_flag ; u1_field_pic = ps_cur_slice -> u1_field_pic_flag ; { UWORD32 x_offset ; UWORD32 y_offset ; UWORD32 u4_frame_stride ; tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = MOD ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y = DIV ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y <<= u1_mb_aff ; if ( ( u2_mb_x > u2_frm_wd_in_mbs - 1 ) || ( u2_mb_y > ps_dec -> u2_frm_ht_in_mbs - 1 ) ) { return ERROR_CORRUPTED_SLICE ; } u4_frame_stride = ps_dec -> u2_frm_wd_y << u1_field_pic ; x_offset = u2_mb_x << 4 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 4 ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 + x_offset + y_offset ; u4_frame_stride = ps_dec -> u2_frm_wd_uv << u1_field_pic ; x_offset >>= 1 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 3 ; x_offset *= YUV420SP_FACTOR ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 + x_offset + y_offset ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 + x_offset + y_offset ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; if ( ps_dec -> u1_separate_parse == 1 ) { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } else { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } ps_dec -> u2_cur_mb_addr = ( u2_first_mb_in_slice << u1_mb_aff ) ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv + ( ( u2_first_mb_in_slice << u1_mb_aff ) << 4 ) ; } } else { tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = 0xffff ; u2_mb_y = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; } ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= ps_cur_slice -> u1_mbaff_frame_flag ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; } ps_bitstrm -> u4_max_ofst += ps_dec -> ps_cur_pps -> u1_entropy_coding_mode ; ps_dec -> u1_B = ( u1_slice_type == B_SLICE ) ; ps_dec -> u4_next_mb_skip = 0 ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> ps_cur_slice -> u2_first_mb_in_slice ; ps_dec -> ps_parse_cur_slice -> slice_type = ps_dec -> ps_cur_slice -> u1_slice_type ; ps_dec -> u4_start_recon_deblk = 1 ; { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( void * ) pu1_buf ; } if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } if ( u1_slice_type == I_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= I_SLC_BIT ; ret = ih264d_parse_islice ( ps_dec , u2_first_mb_in_slice ) ; if ( ps_dec -> i4_pic_type != B_SLICE && ps_dec -> i4_pic_type != P_SLICE ) ps_dec -> i4_pic_type = I_SLICE ; } else if ( u1_slice_type == P_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ret = ih264d_parse_pslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; if ( ps_dec -> i4_pic_type != B_SLICE ) ps_dec -> i4_pic_type = P_SLICE ; } else if ( u1_slice_type == B_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ret = ih264d_parse_bslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; ps_dec -> i4_pic_type = B_SLICE ; } else return ERROR_INV_SLC_TYPE_T ; if ( ps_dec -> u1_slice_header_done ) { ps_dec -> u4_first_slice_in_pic = 0 ; ps_dec -> u1_first_slice_in_stream = 0 ; } if ( ret != OK ) return ret ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ( ps_seq -> u2_max_mb_addr + 1 ) ) { ps_dec -> u1_pic_decode_done = 1 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ( ps_err -> u1_err_flag & REJECT_PB_PICS ) && ( ps_err -> u1_cur_pic_type == PIC_TYPE_I ) ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } PRINT_BIN_BIT_RATIO ( ps_dec ) return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MASK_ERR_PIC_SET_ID ) return ERROR_INV_SLICE_HDR_T <S2SV_ModEnd> ; COPYTHECONTEXT ( <S2SV_ModStart> ) { return ERROR_INV_SLICE_HDR_T <S2SV_ModEnd> ; } ps_seq <S2SV_ModStart> ps_seq ) return ERROR_INV_SLICE_HDR_T <S2SV_ModEnd> ; if ( <S2SV_ModStart> u1_is_valid ) return ERROR_INV_SLICE_HDR_T <S2SV_ModEnd> ; u2_frame_num = <S2SV_ModStart> 65535 ) return ERROR_INV_SLICE_HDR_T <S2SV_ModEnd> ; COPYTHECONTEXT ( <S2SV_ModStart> i4_max_pic_order_cntLsb ) return ERROR_INV_SLICE_HDR_T <S2SV_ModEnd> ; s_tmp_poc . <S2SV_ModStart> MAX_REDUNDANT_PIC_CNT ) return ERROR_INV_SLICE_HDR_T <S2SV_ModEnd> ; u1_redundant_pic_cnt =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-9496\n\n```\nCWE-787 WORD32 ixheaacd_real_synth_filt ( ia_esbr_hbe_txposer_struct * ptr_hbe_txposer , WORD32 num_columns , FLOAT32 qmf_buf_real [ ] [ 64 ] , FLOAT32 qmf_buf_imag [ ] [ 64 ] ) { WORD32 i , j , k , l , idx ; FLOAT32 g [ 640 ] ; FLOAT32 w [ 640 ] ; FLOAT32 synth_out [ 128 ] ; FLOAT32 accu_r ; WORD32 synth_size = ptr_hbe_txposer -> synth_size ; FLOAT32 * ptr_cos_tab_trans_qmf = ( FLOAT32 * ) & ixheaacd_cos_table_trans_qmf [ 0 ] [ 0 ] + ptr_hbe_txposer -> k_start * 32 ; FLOAT32 * buffer = ptr_hbe_txposer -> synth_buf ; for ( idx = 0 ; idx < num_columns ; idx ++ ) { FLOAT32 loc_qmf_buf [ 64 ] ; FLOAT32 * synth_buf_r = loc_qmf_buf ; FLOAT32 * out_buf = ptr_hbe_txposer -> ptr_input_buf + ( idx + 1 ) * ptr_hbe_txposer -> synth_size ; FLOAT32 * synth_cos_tab = ptr_hbe_txposer -> synth_cos_tab ; const FLOAT32 * interp_window_coeff = ptr_hbe_txposer -> synth_wind_coeff ; if ( ptr_hbe_txposer -> k_start < 0 ) return - 1 ; for ( k = 0 ; k < synth_size ; k ++ ) { WORD32 ki = ptr_hbe_txposer -> k_start + k ; synth_buf_r [ k ] = ( FLOAT32 ) ( ptr_cos_tab_trans_qmf [ ( k << 1 ) + 0 ] * qmf_buf_real [ idx ] [ ki ] + ptr_cos_tab_trans_qmf [ ( k << 1 ) + 1 ] * qmf_buf_imag [ idx ] [ ki ] ) ; synth_buf_r [ k + ptr_hbe_txposer -> synth_size ] = 0 ; } for ( l = ( 20 * synth_size - 1 ) ; l >= 2 * synth_size ; l -- ) { buffer [ l ] = buffer [ l - 2 * synth_size ] ; } if ( synth_size == 20 ) { FLOAT32 * psynth_cos_tab = synth_cos_tab ; for ( l = 0 ; l < ( synth_size + 1 ) ; l ++ ) { accu_r = 0.0 ; for ( k = 0 ; k < synth_size ; k ++ ) { accu_r += synth_buf_r [ k ] * psynth_cos_tab [ k ] ; } buffer [ 0 + l ] = accu_r ; buffer [ synth_size - l ] = accu_r ; psynth_cos_tab = psynth_cos_tab + synth_size ; } for ( l = ( synth_size + 1 ) ; l < ( 2 * synth_size - synth_size / 2 ) ; l ++ ) { accu_r = 0.0 ; for ( k = 0 ; k < synth_size ; k ++ ) { accu_r += synth_buf_r [ k ] * psynth_cos_tab [ k ] ; } buffer [ 0 + l ] = accu_r ; buffer [ 3 * synth_size - l ] = - accu_r ; psynth_cos_tab = psynth_cos_tab + synth_size ; } accu_r = 0.0 ; for ( k = 0 ; k < synth_size ; k ++ ) { accu_r += synth_buf_r [ k ] * psynth_cos_tab [ k ] ; } buffer [ 3 * synth_size >> 1 ] = accu_r ; } else { FLOAT32 tmp ; FLOAT32 * ptr_u = synth_out ; WORD32 kmax = ( synth_size >> 1 ) ; FLOAT32 * syn_buf = & buffer [ kmax ] ; kmax += synth_size ; <S2SV_StartBug> if ( ixheaacd_real_synth_fft != NULL ) <S2SV_EndBug> <S2SV_StartBug> ( * ixheaacd_real_synth_fft ) ( synth_buf_r , synth_out , synth_size * 2 ) ; <S2SV_EndBug> else return - 1 ; for ( k = 0 ; k < kmax ; k ++ ) { tmp = ( ( * ptr_u ++ ) * ( * synth_cos_tab ++ ) ) ; tmp -= ( ( * ptr_u ++ ) * ( * synth_cos_tab ++ ) ) ; * syn_buf ++ = tmp ; } syn_buf = & buffer [ 0 ] ; kmax -= synth_size ; for ( k = 0 ; k < kmax ; k ++ ) { tmp = ( ( * ptr_u ++ ) * ( * synth_cos_tab ++ ) ) ; tmp -= ( ( * ptr_u ++ ) * ( * synth_cos_tab ++ ) ) ; * syn_buf ++ = tmp ; } } for ( i = 0 ; i < 5 ; i ++ ) { memcpy ( & g [ ( 2 * i + 0 ) * synth_size ] , & buffer [ ( 4 * i + 0 ) * synth_size ] , sizeof ( FLOAT32 ) * synth_size ) ; memcpy ( & g [ ( 2 * i + 1 ) * synth_size ] , & buffer [ ( 4 * i + 3 ) * synth_size ] , sizeof ( FLOAT32 ) * synth_size ) ; } for ( k = 0 ; k < 10 * synth_size ; k ++ ) { w [ k ] = g [ k ] * interp_window_coeff [ k ] ; } for ( i = 0 ; i < synth_size ; i ++ ) { accu_r = 0.0 ; for ( j = 0 ; j < 10 ; j ++ ) { accu_r = accu_r + w [ synth_size * j + i ] ; } out_buf [ i ] = ( FLOAT32 ) accu_r ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ptr_hbe_txposer -> <S2SV_ModStart> ) ( * ( ptr_hbe_txposer -> ixheaacd_real_synth_fft ) ) <S2SV_ModEnd> ( synth_buf_r ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6367\n\n```\nCWE-189 static u32 apic_get_tmcct ( struct kvm_lapic * apic ) { ktime_t remaining ; s64 ns ; u32 tmcct ; ASSERT ( apic != NULL ) ; <S2SV_StartBug> if ( kvm_apic_get_reg ( apic , APIC_TMICT ) == 0 ) <S2SV_EndBug> return 0 ; remaining = hrtimer_get_remaining ( & apic -> lapic_timer . timer ) ; if ( ktime_to_ns ( remaining ) < 0 ) remaining = ktime_set ( 0 , 0 ) ; ns = mod_64 ( ktime_to_ns ( remaining ) , apic -> lapic_timer . period ) ; tmcct = div64_u64 ( ns , ( APIC_BUS_CYCLE_NS * apic -> divide_count ) ) ; return tmcct ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , APIC_TMICT ) == 0 || apic -> lapic_timer . period\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8831\n\n```\nCWE-125 int saa7164_bus_get ( struct saa7164_dev * dev , struct tmComResInfo * msg , void * buf , int peekonly ) { struct tmComResBusInfo * bus = & dev -> bus ; u32 bytes_to_read , write_distance , curr_grp , curr_gwp , new_grp , buf_size , space_rem ; struct tmComResInfo msg_tmp ; int ret = SAA_ERR_BAD_PARAMETER ; saa7164_bus_verify ( dev ) ; if ( msg == NULL ) return ret ; if ( msg -> size > dev -> bus . m_wMaxReqSize ) { printk ( KERN_ERR \"%s()<S2SV_blank>Exceeded<S2SV_blank>dev->bus.m_wMaxReqSize\\\\n\" , __func__ ) ; return ret ; } if ( ( peekonly == 0 ) && ( msg -> size > 0 ) && ( buf == NULL ) ) { printk ( KERN_ERR \"%s()<S2SV_blank>Missing<S2SV_blank>msg<S2SV_blank>buf,<S2SV_blank>size<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , __func__ , msg -> size ) ; return ret ; } mutex_lock ( & bus -> lock ) ; curr_gwp = saa7164_readl ( bus -> m_dwGetWritePos ) ; curr_grp = saa7164_readl ( bus -> m_dwGetReadPos ) ; if ( curr_gwp == curr_grp ) { ret = SAA_ERR_EMPTY ; goto out ; } bytes_to_read = sizeof ( * msg ) ; write_distance = 0 ; if ( curr_gwp >= curr_grp ) write_distance = curr_gwp - curr_grp ; else write_distance = curr_gwp + bus -> m_dwSizeGetRing - curr_grp ; if ( bytes_to_read > write_distance ) { printk ( KERN_ERR \"%s()<S2SV_blank>No<S2SV_blank>message/response<S2SV_blank>found\\\\n\" , __func__ ) ; ret = SAA_ERR_INVALID_COMMAND ; goto out ; } new_grp = curr_grp + bytes_to_read ; if ( new_grp > bus -> m_dwSizeGetRing ) { new_grp -= bus -> m_dwSizeGetRing ; space_rem = bus -> m_dwSizeGetRing - curr_grp ; memcpy_fromio ( & msg_tmp , bus -> m_pdwGetRing + curr_grp , space_rem ) ; memcpy_fromio ( ( u8 * ) & msg_tmp + space_rem , bus -> m_pdwGetRing , bytes_to_read - space_rem ) ; } else { memcpy_fromio ( & msg_tmp , bus -> m_pdwGetRing + curr_grp , bytes_to_read ) ; } msg_tmp . size = le16_to_cpu ( ( __force __le16 ) msg_tmp . size ) ; msg_tmp . command = le32_to_cpu ( ( __force __le32 ) msg_tmp . command ) ; msg_tmp . controlselector = le16_to_cpu ( ( __force __le16 ) msg_tmp . controlselector ) ; <S2SV_StartBug> if ( peekonly ) { <S2SV_EndBug> <S2SV_StartBug> memcpy ( msg , & msg_tmp , sizeof ( * msg ) ) ; <S2SV_EndBug> goto peekout ; } if ( ( msg_tmp . id != msg -> id ) || ( msg_tmp . command != msg -> command ) || ( msg_tmp . controlselector != msg -> controlselector ) || ( msg_tmp . seqno != msg -> seqno ) || ( msg_tmp . size != msg -> size ) ) { printk ( KERN_ERR \"%s()<S2SV_blank>Unexpected<S2SV_blank>msg<S2SV_blank>miss-match\\\\n\" , __func__ ) ; saa7164_bus_dumpmsg ( dev , msg , buf ) ; saa7164_bus_dumpmsg ( dev , & msg_tmp , NULL ) ; ret = SAA_ERR_INVALID_COMMAND ; goto out ; } buf_size = msg -> size ; bytes_to_read = sizeof ( * msg ) + msg -> size ; write_distance = 0 ; if ( curr_gwp >= curr_grp ) write_distance = curr_gwp - curr_grp ; else write_distance = curr_gwp + bus -> m_dwSizeGetRing - curr_grp ; if ( bytes_to_read > write_distance ) { printk ( KERN_ERR \"%s()<S2SV_blank>Invalid<S2SV_blank>bus<S2SV_blank>state,<S2SV_blank>missing<S2SV_blank>msg<S2SV_blank>or<S2SV_blank>mangled<S2SV_blank>ring,<S2SV_blank>faulty<S2SV_blank>H/W<S2SV_blank>/<S2SV_blank>bad<S2SV_blank>code?\\\\n\" , __func__ ) ; ret = SAA_ERR_INVALID_COMMAND ; goto out ; } new_grp = curr_grp + bytes_to_read ; if ( new_grp > bus -> m_dwSizeGetRing ) { new_grp -= bus -> m_dwSizeGetRing ; space_rem = bus -> m_dwSizeGetRing - curr_grp ; if ( space_rem < sizeof ( * msg ) ) { <S2SV_StartBug> memcpy_fromio ( msg , bus -> m_pdwGetRing + curr_grp , space_rem ) ; <S2SV_EndBug> memcpy_fromio ( ( u8 * ) msg + space_rem , bus -> m_pdwGetRing , <S2SV_StartBug> sizeof ( * msg ) - space_rem ) ; <S2SV_EndBug> if ( buf ) <S2SV_StartBug> memcpy_fromio ( buf , bus -> m_pdwGetRing + sizeof ( * msg ) - <S2SV_EndBug> space_rem , buf_size ) ; <S2SV_StartBug> } else if ( space_rem == sizeof ( * msg ) ) { <S2SV_EndBug> memcpy_fromio ( msg , bus -> m_pdwGetRing + curr_grp , sizeof ( * msg ) ) ; if ( buf ) memcpy_fromio ( buf , bus -> m_pdwGetRing , buf_size ) ; } else { memcpy_fromio ( msg , bus -> m_pdwGetRing + curr_grp , sizeof ( * msg ) ) ; if ( buf ) { memcpy_fromio ( buf , bus -> m_pdwGetRing + curr_grp + sizeof ( * msg ) , space_rem - sizeof ( * msg ) ) ; memcpy_fromio ( buf + space_rem - sizeof ( * msg ) , bus -> m_pdwGetRing , bytes_to_read - space_rem ) ; } } } else { memcpy_fromio ( msg , bus -> m_pdwGetRing + curr_grp , sizeof ( * msg ) ) ; if ( buf ) memcpy_fromio ( buf , bus -> m_pdwGetRing + curr_grp + sizeof ( * msg ) , buf_size ) ; } msg -> size = le16_to_cpu ( ( __force __le16 ) msg -> size ) ; msg -> command = le32_to_cpu ( ( __force __le32 ) msg -> command ) ; msg -> controlselector = le16_to_cpu ( ( __force __le16 ) msg -> controlselector ) ; saa7164_writel ( bus -> m_dwGetReadPos , new_grp ) ; peekout : ret = SAA_OK ; out : mutex_unlock ( & bus -> lock ) ; saa7164_bus_verify ( dev ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> controlselector ) ; memcpy ( msg , & msg_tmp , sizeof ( * msg ) ) ; <S2SV_ModStart> peekonly ) { <S2SV_ModEnd> goto peekout ; <S2SV_ModStart> ) ) { if ( buf ) memcpy_fromio ( buf <S2SV_ModEnd> , bus -> <S2SV_ModStart> -> m_pdwGetRing + sizeof ( * msg ) - space_rem , buf_size ) ; } else if ( space_rem == sizeof ( * msg ) ) { if ( buf ) memcpy_fromio ( buf <S2SV_ModEnd> , bus -> <S2SV_ModStart> -> m_pdwGetRing , buf_size ) ; } else { if ( buf ) { <S2SV_ModEnd> memcpy_fromio ( buf <S2SV_ModStart> -> m_pdwGetRing + curr_grp + sizeof ( * msg ) , space_rem - sizeof ( * msg ) ) ; memcpy_fromio ( buf + space_rem - sizeof ( * msg ) , bus -> m_pdwGetRing , bytes_to_read - space_rem ) ; } } } else { if ( buf ) memcpy_fromio ( buf , bus -> m_pdwGetRing + curr_grp + sizeof ( * msg ) , <S2SV_ModEnd> buf_size ) ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> saa7164_writel ( bus\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5344\n\n```\nCWE-362 static void lo_release ( struct gendisk * disk , fmode_t mode ) { <S2SV_StartBug> struct loop_device * lo = disk -> private_data ; <S2SV_EndBug> int err ; if ( atomic_dec_return ( & lo -> lo_refcnt ) ) return ; mutex_lock ( & lo -> lo_ctl_mutex ) ; if ( lo -> lo_flags & LO_FLAGS_AUTOCLEAR ) { err = loop_clr_fd ( lo ) ; if ( ! err ) return ; } else if ( lo -> lo_state == Lo_bound ) { blk_mq_freeze_queue ( lo -> lo_queue ) ; blk_mq_unfreeze_queue ( lo -> lo_queue ) ; } <S2SV_StartBug> mutex_unlock ( & lo -> lo_ctl_mutex ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mode ) { mutex_lock ( & loop_index_mutex ) ; __lo_release ( <S2SV_ModEnd> disk -> private_data <S2SV_ModStart> disk -> private_data ) ; <S2SV_ModEnd> mutex_unlock ( & <S2SV_ModStart> mutex_unlock ( & loop_index_mutex <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static void jas_stream_initbuf ( jas_stream_t * stream , int bufmode , char * buf , int bufsize ) { assert ( ! stream -> bufbase_ ) ; if ( bufmode != JAS_STREAM_UNBUF ) { if ( ! buf ) { if ( ( stream -> bufbase_ = jas_malloc ( JAS_STREAM_BUFSIZE + JAS_STREAM_MAXPUTBACK ) ) ) { stream -> bufmode_ |= JAS_STREAM_FREEBUF ; stream -> bufsize_ = JAS_STREAM_BUFSIZE ; } else { stream -> bufbase_ = stream -> tinybuf_ ; stream -> bufsize_ = 1 ; } } else { assert ( bufsize > JAS_STREAM_MAXPUTBACK ) ; <S2SV_StartBug> stream -> bufbase_ = JAS_CAST ( uchar * , buf ) ; <S2SV_EndBug> stream -> bufsize_ = bufsize - JAS_STREAM_MAXPUTBACK ; } } else { assert ( ! buf ) ; stream -> bufbase_ = stream -> tinybuf_ ; stream -> bufsize_ = 1 ; } stream -> bufstart_ = & stream -> bufbase_ [ JAS_STREAM_MAXPUTBACK ] ; stream -> ptr_ = stream -> bufstart_ ; stream -> cnt_ = 0 ; stream -> bufmode_ |= bufmode & JAS_STREAM_BUFMODEMASK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = JAS_CAST ( jas_uchar <S2SV_ModEnd> * , buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2847\n\n```\nCWE-399 struct pipe_inode_info * alloc_pipe_info ( void ) { struct pipe_inode_info * pipe ; pipe = kzalloc ( sizeof ( struct pipe_inode_info ) , GFP_KERNEL ) ; if ( pipe ) { <S2SV_StartBug> pipe -> bufs = kzalloc ( sizeof ( struct pipe_buffer ) * PIPE_DEF_BUFFERS , GFP_KERNEL ) ; <S2SV_EndBug> if ( pipe -> bufs ) { init_waitqueue_head ( & pipe -> wait ) ; pipe -> r_counter = pipe -> w_counter = 1 ; <S2SV_StartBug> pipe -> buffers = PIPE_DEF_BUFFERS ; <S2SV_EndBug> mutex_init ( & pipe -> mutex ) ; return pipe ; } <S2SV_StartBug> kfree ( pipe ) ; <S2SV_EndBug> } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pipe ) { unsigned long pipe_bufs = PIPE_DEF_BUFFERS ; struct user_struct * user = get_current_user ( ) ; if ( ! too_many_pipe_buffers_hard ( user ) ) { if ( too_many_pipe_buffers_soft ( user ) ) pipe_bufs = 1 ; <S2SV_ModStart> pipe_buffer ) * pipe_bufs <S2SV_ModEnd> , GFP_KERNEL ) <S2SV_ModStart> GFP_KERNEL ) ; } <S2SV_ModStart> -> buffers = pipe_bufs ; pipe -> user = user ; account_pipe_buffers ( pipe , 0 , pipe_bufs ) <S2SV_ModEnd> ; mutex_init ( <S2SV_ModStart> pipe ; } free_uid ( user ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2909\n\n```\nCWE-200 static int do_devinfo_ioctl ( struct comedi_device * dev , struct comedi_devinfo __user * arg , struct file * file ) { struct comedi_devinfo devinfo ; const unsigned minor = iminor ( file -> f_dentry -> d_inode ) ; struct comedi_device_file_info * dev_file_info = comedi_get_device_file_info ( minor ) ; struct comedi_subdevice * read_subdev = comedi_get_read_subdevice ( dev_file_info ) ; struct comedi_subdevice * write_subdev = comedi_get_write_subdevice ( dev_file_info ) ; memset ( & devinfo , 0 , sizeof ( devinfo ) ) ; devinfo . version_code = COMEDI_VERSION_CODE ; devinfo . n_subdevs = dev -> n_subdevices ; <S2SV_StartBug> memcpy ( devinfo . driver_name , dev -> driver -> driver_name , COMEDI_NAMELEN ) ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( devinfo . board_name , dev -> board_name , COMEDI_NAMELEN ) ; <S2SV_EndBug> if ( read_subdev ) devinfo . read_subdevice = read_subdev - dev -> subdevices ; else devinfo . read_subdevice = - 1 ; if ( write_subdev ) devinfo . write_subdevice = write_subdev - dev -> subdevices ; else devinfo . write_subdevice = - 1 ; if ( copy_to_user ( arg , & devinfo , sizeof ( struct comedi_devinfo ) ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> n_subdevices ; strlcpy <S2SV_ModEnd> ( devinfo . <S2SV_ModStart> COMEDI_NAMELEN ) ; strlcpy <S2SV_ModEnd> ( devinfo .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15923\n\n```\nCWE-476 static int pcd_detect ( void ) { char id [ 18 ] ; int k , unit ; struct pcd_unit * cd ; printk ( \"%s:<S2SV_blank>%s<S2SV_blank>version<S2SV_blank>%s,<S2SV_blank>major<S2SV_blank>%d,<S2SV_blank>nice<S2SV_blank>%d\\\\n\" , name , name , PCD_VERSION , major , nice ) ; par_drv = pi_register_driver ( name ) ; if ( ! par_drv ) { pr_err ( \"failed<S2SV_blank>to<S2SV_blank>register<S2SV_blank>%s<S2SV_blank>driver\\\\n\" , name ) ; return - 1 ; } k = 0 ; if ( pcd_drive_count == 0 ) { cd = pcd ; if ( pi_init ( cd -> pi , 1 , - 1 , - 1 , - 1 , - 1 , - 1 , pcd_buffer , PI_PCD , verbose , cd -> name ) ) { if ( ! pcd_probe ( cd , - 1 , id ) && cd -> disk ) { cd -> present = 1 ; k ++ ; } else pi_release ( cd -> pi ) ; } } else { for ( unit = 0 , cd = pcd ; unit < PCD_UNITS ; unit ++ , cd ++ ) { int * conf = * drives [ unit ] ; if ( ! conf [ D_PRT ] ) continue ; if ( ! pi_init ( cd -> pi , 0 , conf [ D_PRT ] , conf [ D_MOD ] , conf [ D_UNI ] , conf [ D_PRO ] , conf [ D_DLY ] , pcd_buffer , PI_PCD , verbose , cd -> name ) ) continue ; if ( ! pcd_probe ( cd , conf [ D_SLV ] , id ) && cd -> disk ) { cd -> present = 1 ; k ++ ; } else pi_release ( cd -> pi ) ; } } if ( k ) return 0 ; printk ( \"%s:<S2SV_blank>No<S2SV_blank>CD-ROM<S2SV_blank>drive<S2SV_blank>found\\\\n\" , name ) ; for ( unit = 0 , cd = pcd ; unit < PCD_UNITS ; unit ++ , cd ++ ) { <S2SV_StartBug> blk_cleanup_queue ( cd -> disk -> queue ) ; <S2SV_EndBug> cd -> disk -> queue = NULL ; blk_mq_free_tag_set ( & cd -> tag_set ) ; put_disk ( cd -> disk ) ; } pi_unregister_driver ( par_drv ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { if ( ! cd -> disk ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12684\n\n```\nCWE-125 static void send_ssi_file ( struct mg_connection * conn , const char * path , struct mg_file * filep , int include_level ) { char buf [ MG_BUF_LEN ] ; int ch , offset , len , in_tag , in_ssi_tag ; if ( include_level > 10 ) { mg_cry_internal ( conn , \"SSI<S2SV_blank>#include<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>deep<S2SV_blank>(%s)\" , path ) ; return ; } in_tag = in_ssi_tag = len = offset = 0 ; while ( ( ch = mg_fgetc ( filep , offset ++ ) ) != EOF ) { if ( in_tag ) { if ( ch == '>' ) { buf [ len ++ ] = '>' ; if ( in_ssi_tag ) { buf [ len ] = 0 ; <S2SV_StartBug> if ( ! memcmp ( buf + 5 , \"include\" , 7 ) ) { <S2SV_EndBug> do_ssi_include ( conn , path , buf + 12 , include_level + 1 ) ; # if ! defined ( NO_POPEN ) <S2SV_StartBug> } else if ( ! memcmp ( buf + 5 , \"exec\" , 4 ) ) { <S2SV_EndBug> do_ssi_exec ( conn , buf + 9 ) ; # endif } else { mg_cry_internal ( conn , \"%s:<S2SV_blank>unknown<S2SV_blank>SSI<S2SV_blank>\" \"command:<S2SV_blank>\\\\\"%s\\\\\"\" , path , buf ) ; } len = 0 ; in_ssi_tag = in_tag = 0 ; } else { ( void ) mg_write ( conn , buf , ( size_t ) len ) ; len = 0 ; in_tag = 0 ; } } else { buf [ len ++ ] = ( char ) ( ch & 0xff ) ; if ( ( len == 5 ) && ! memcmp ( buf , \"<!--#\" , 5 ) ) { in_ssi_tag = 1 ; } if ( ( len + 2 ) > ( int ) sizeof ( buf ) ) { mg_cry_internal ( conn , \"%s:<S2SV_blank>tag<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" , path ) ; return ; } } } else { if ( ch == '<' ) { in_tag = 1 ; if ( len > 0 ) { ( void ) mg_write ( conn , buf , ( size_t ) len ) ; } len = 1 ; buf [ 0 ] = '<' ; } else { buf [ len ++ ] = ( char ) ( ch & 0xff ) ; if ( len == ( int ) sizeof ( buf ) ) { mg_write ( conn , buf , ( size_t ) len ) ; len = 0 ; } } } } if ( len > 0 ) { mg_write ( conn , buf , ( size_t ) len ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( len > 12 ) && <S2SV_ModStart> else if ( ( len > 9 ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2745\n\n```\nCWE-119 int copy_creds ( struct task_struct * p , unsigned long clone_flags ) { # ifdef CONFIG_KEYS struct thread_group_cred * tgcred ; # endif struct cred * new ; int ret ; <S2SV_StartBug> if ( <S2SV_EndBug> # ifdef CONFIG_KEYS ! p -> cred -> thread_keyring && # endif clone_flags & CLONE_THREAD ) { p -> real_cred = get_cred ( p -> cred ) ; get_cred ( p -> cred ) ; alter_cred_subscribers ( p -> cred , 2 ) ; kdebug ( \"share_creds(%p{%d,%d})\" , p -> cred , atomic_read ( & p -> cred -> usage ) , read_cred_subscribers ( p -> cred ) ) ; atomic_inc ( & p -> cred -> user -> processes ) ; return 0 ; } new = prepare_creds ( ) ; if ( ! new ) return - ENOMEM ; if ( clone_flags & CLONE_NEWUSER ) { ret = create_user_ns ( new ) ; if ( ret < 0 ) goto error_put ; } new -> user_ns = new -> user -> user_ns ; # ifdef CONFIG_KEYS if ( new -> thread_keyring ) { key_put ( new -> thread_keyring ) ; new -> thread_keyring = NULL ; if ( clone_flags & CLONE_THREAD ) install_thread_keyring_to_cred ( new ) ; } if ( ! ( clone_flags & CLONE_THREAD ) ) { tgcred = kmalloc ( sizeof ( * tgcred ) , GFP_KERNEL ) ; if ( ! tgcred ) { ret = - ENOMEM ; goto error_put ; } atomic_set ( & tgcred -> usage , 1 ) ; spin_lock_init ( & tgcred -> lock ) ; tgcred -> process_keyring = NULL ; tgcred -> session_keyring = key_get ( new -> tgcred -> session_keyring ) ; release_tgcred ( new ) ; new -> tgcred = tgcred ; } # endif atomic_inc ( & new -> user -> processes ) ; p -> cred = p -> real_cred = get_cred ( new ) ; alter_cred_subscribers ( new , 2 ) ; validate_creds ( new ) ; return 0 ; error_put : put_cred ( new ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int ret ; p -> replacement_session_keyring = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20911\n\n```\nCWE-835 int dwg_encode_add_object ( Dwg_Object * restrict obj , Bit_Chain * restrict dat , unsigned long address ) { int error = 0 ; unsigned long oldpos ; unsigned long end_address = address + obj -> size ; oldpos = bit_position ( dat ) ; assert ( address ) ; dat -> byte = address ; dat -> bit = 0 ; LOG_INFO ( \"Object<S2SV_blank>number:<S2SV_blank>%lu\" , ( unsigned long ) obj -> index ) ; if ( obj -> size > 0x100000 ) { LOG_ERROR ( \"Object<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>overflow\" , obj -> size ) ; return DWG_ERR_VALUEOUTOFBOUNDS ; } while ( dat -> byte + obj -> size >= dat -> size ) bit_chain_alloc ( dat ) ; bit_write_MS ( dat , obj -> size ) ; obj -> address = dat -> byte ; PRE ( R_2010 ) { bit_write_BS ( dat , obj -> type ) ; LOG_INFO ( \",<S2SV_blank>Size:<S2SV_blank>%d<S2SV_blank>[MS],<S2SV_blank>Type:<S2SV_blank>%d<S2SV_blank>[BS]\\\\n\" , obj -> size , obj -> type ) } LATER_VERSIONS { if ( ! obj -> handlestream_size && obj -> bitsize ) obj -> handlestream_size = obj -> size * 8 - obj -> bitsize ; bit_write_UMC ( dat , obj -> handlestream_size ) ; obj -> address = dat -> byte ; bit_write_BOT ( dat , obj -> type ) ; LOG_INFO ( \",<S2SV_blank>Size:<S2SV_blank>%d<S2SV_blank>[MS],<S2SV_blank>Hdlsize:<S2SV_blank>%lu<S2SV_blank>[UMC],<S2SV_blank>Type:<S2SV_blank>%d<S2SV_blank>[BOT]\\\\n\" , obj -> size , ( unsigned long ) obj -> handlestream_size , obj -> type ) } switch ( obj -> type ) { case DWG_TYPE_TEXT : error = dwg_encode_TEXT ( dat , obj ) ; break ; case DWG_TYPE_ATTRIB : error = dwg_encode_ATTRIB ( dat , obj ) ; break ; case DWG_TYPE_ATTDEF : error = dwg_encode_ATTDEF ( dat , obj ) ; break ; case DWG_TYPE_BLOCK : error = dwg_encode_BLOCK ( dat , obj ) ; break ; case DWG_TYPE_ENDBLK : error = dwg_encode_ENDBLK ( dat , obj ) ; break ; case DWG_TYPE_SEQEND : error = dwg_encode_SEQEND ( dat , obj ) ; break ; case DWG_TYPE_INSERT : error = dwg_encode_INSERT ( dat , obj ) ; break ; case DWG_TYPE_MINSERT : error = dwg_encode_MINSERT ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_2D : error = dwg_encode_VERTEX_2D ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_3D : error = dwg_encode_VERTEX_3D ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_MESH : error = dwg_encode_VERTEX_MESH ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_PFACE : error = dwg_encode_VERTEX_PFACE ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_PFACE_FACE : error = dwg_encode_VERTEX_PFACE_FACE ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_2D : error = dwg_encode_POLYLINE_2D ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_3D : error = dwg_encode_POLYLINE_3D ( dat , obj ) ; break ; case DWG_TYPE_ARC : error = dwg_encode_ARC ( dat , obj ) ; break ; case DWG_TYPE_CIRCLE : error = dwg_encode_CIRCLE ( dat , obj ) ; break ; case DWG_TYPE_LINE : error = dwg_encode_LINE ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ORDINATE : error = dwg_encode_DIMENSION_ORDINATE ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_LINEAR : error = dwg_encode_DIMENSION_LINEAR ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ALIGNED : error = dwg_encode_DIMENSION_ALIGNED ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ANG3PT : error = dwg_encode_DIMENSION_ANG3PT ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ANG2LN : error = dwg_encode_DIMENSION_ANG2LN ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_RADIUS : error = dwg_encode_DIMENSION_RADIUS ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_DIAMETER : error = dwg_encode_DIMENSION_DIAMETER ( dat , obj ) ; break ; case DWG_TYPE_POINT : error = dwg_encode_POINT ( dat , obj ) ; break ; case DWG_TYPE__3DFACE : error = dwg_encode__3DFACE ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_PFACE : error = dwg_encode_POLYLINE_PFACE ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_MESH : error = dwg_encode_POLYLINE_MESH ( dat , obj ) ; break ; case DWG_TYPE_SOLID : error = dwg_encode_SOLID ( dat , obj ) ; break ; case DWG_TYPE_TRACE : error = dwg_encode_TRACE ( dat , obj ) ; break ; case DWG_TYPE_SHAPE : error = dwg_encode_SHAPE ( dat , obj ) ; break ; case DWG_TYPE_VIEWPORT : error = dwg_encode_VIEWPORT ( dat , obj ) ; break ; case DWG_TYPE_ELLIPSE : error = dwg_encode_ELLIPSE ( dat , obj ) ; break ; case DWG_TYPE_SPLINE : error = dwg_encode_SPLINE ( dat , obj ) ; break ; case DWG_TYPE_REGION : error = dwg_encode_REGION ( dat , obj ) ; break ; case DWG_TYPE__3DSOLID : error = dwg_encode__3DSOLID ( dat , obj ) ; break ; case DWG_TYPE_BODY : error = dwg_encode_BODY ( dat , obj ) ; break ; case DWG_TYPE_RAY : error = dwg_encode_RAY ( dat , obj ) ; break ; case DWG_TYPE_XLINE : error = dwg_encode_XLINE ( dat , obj ) ; break ; case DWG_TYPE_DICTIONARY : error = dwg_encode_DICTIONARY ( dat , obj ) ; break ; case DWG_TYPE_MTEXT : error = dwg_encode_MTEXT ( dat , obj ) ; break ; case DWG_TYPE_LEADER : error = dwg_encode_LEADER ( dat , obj ) ; break ; case DWG_TYPE_TOLERANCE : error = dwg_encode_TOLERANCE ( dat , obj ) ; break ; case DWG_TYPE_MLINE : error = dwg_encode_MLINE ( dat , obj ) ; break ; case DWG_TYPE_BLOCK_CONTROL : error = dwg_encode_BLOCK_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_BLOCK_HEADER : error = dwg_encode_BLOCK_HEADER ( dat , obj ) ; break ; case DWG_TYPE_LAYER_CONTROL : error = dwg_encode_LAYER_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_LAYER : error = dwg_encode_LAYER ( dat , obj ) ; break ; case DWG_TYPE_STYLE_CONTROL : error = dwg_encode_STYLE_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_STYLE : error = dwg_encode_STYLE ( dat , obj ) ; break ; case DWG_TYPE_LTYPE_CONTROL : error = dwg_encode_LTYPE_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_LTYPE : error = dwg_encode_LTYPE ( dat , obj ) ; break ; case DWG_TYPE_VIEW_CONTROL : error = dwg_encode_VIEW_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_VIEW : error = dwg_encode_VIEW ( dat , obj ) ; break ; case DWG_TYPE_UCS_CONTROL : error = dwg_encode_UCS_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_UCS : error = dwg_encode_UCS ( dat , obj ) ; break ; case DWG_TYPE_VPORT_CONTROL : error = dwg_encode_VPORT_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_VPORT : error = dwg_encode_VPORT ( dat , obj ) ; break ; case DWG_TYPE_APPID_CONTROL : error = dwg_encode_APPID_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_APPID : error = dwg_encode_APPID ( dat , obj ) ; break ; case DWG_TYPE_DIMSTYLE_CONTROL : error = dwg_encode_DIMSTYLE_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_DIMSTYLE : error = dwg_encode_DIMSTYLE ( dat , obj ) ; break ; case DWG_TYPE_VPORT_ENTITY_CONTROL : error = dwg_encode_VPORT_ENTITY_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_VPORT_ENTITY_HEADER : error = dwg_encode_VPORT_ENTITY_HEADER ( dat , obj ) ; break ; case DWG_TYPE_GROUP : error = dwg_encode_GROUP ( dat , obj ) ; break ; case DWG_TYPE_MLINESTYLE : error = dwg_encode_MLINESTYLE ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; break ; case DWG_TYPE_OLE2FRAME : error = dwg_encode_OLE2FRAME ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; break ; case DWG_TYPE_DUMMY : error = dwg_encode_DUMMY ( dat , obj ) ; break ; case DWG_TYPE_LONG_TRANSACTION : error = dwg_encode_LONG_TRANSACTION ( dat , obj ) ; break ; case DWG_TYPE_LWPOLYLINE : error = dwg_encode_LWPOLYLINE ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; break ; case DWG_TYPE_HATCH : error = dwg_encode_HATCH ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; break ; case DWG_TYPE_XRECORD : error = dwg_encode_XRECORD ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; break ; case DWG_TYPE_PLACEHOLDER : error = dwg_encode_PLACEHOLDER ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; break ; case DWG_TYPE_OLEFRAME : error = dwg_encode_OLEFRAME ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; break ; case DWG_TYPE_VBA_PROJECT : LOG_ERROR ( \"Unhandled<S2SV_blank>Object<S2SV_blank>VBA_PROJECT.<S2SV_blank>Has<S2SV_blank>its<S2SV_blank>own<S2SV_blank>section\" ) ; break ; case DWG_TYPE_LAYOUT : error |= dwg_encode_LAYOUT ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; break ; case DWG_TYPE_PROXY_ENTITY : error = dwg_encode_PROXY_ENTITY ( dat , obj ) ; break ; case DWG_TYPE_PROXY_OBJECT : error = dwg_encode_PROXY_OBJECT ( dat , obj ) ; break ; default : if ( obj -> type == obj -> parent -> layout_type && obj -> fixedtype == DWG_TYPE_LAYOUT ) { error = dwg_encode_LAYOUT ( dat , obj ) ; ( void ) dwg_encode_get_class ( obj -> parent , obj ) ; } else if ( ( error = dwg_encode_variable_type ( obj -> parent , dat , obj ) ) & DWG_ERR_UNHANDLEDCLASS ) { Dwg_Data * dwg = obj -> parent ; int is_entity ; int i = obj -> type - 500 ; Dwg_Class * klass = dwg_encode_get_class ( dwg , obj ) ; assert ( address ) ; dat -> byte = address ; dat -> bit = 0 ; bit_write_MS ( dat , obj -> size ) ; if ( dat -> version >= R_2010 ) { bit_write_UMC ( dat , obj -> handlestream_size ) ; bit_write_BOT ( dat , obj -> type ) ; } else bit_write_BS ( dat , obj -> type ) ; if ( klass && obj -> supertype == DWG_SUPERTYPE_UNKNOWN ) is_entity = dwg_class_is_entity ( klass ) ; else is_entity = obj -> supertype == DWG_SUPERTYPE_ENTITY ; <S2SV_StartBug> if ( klass && ! is_entity ) <S2SV_EndBug> <S2SV_StartBug> error = dwg_encode_UNKNOWN_OBJ ( dat , obj ) ; <S2SV_EndBug> <S2SV_StartBug> else if ( klass ) <S2SV_EndBug> error = dwg_encode_UNKNOWN_ENT ( dat , obj ) ; else { LOG_WARN ( \"Unknown<S2SV_blank>object,<S2SV_blank>skipping<S2SV_blank>eed/reactors/xdic\" ) ; error = DWG_ERR_UNHANDLEDCLASS ; SINCE ( R_2000 ) { bit_write_RL ( dat , obj -> bitsize ) ; LOG_INFO ( \"bitsize:<S2SV_blank>\" FORMAT_RL \"<S2SV_blank>[RL]<S2SV_blank>(@%lu.%u)\\\\n\" , obj -> bitsize , dat -> byte - 4 , dat -> bit ) ; } bit_write_H ( dat , & obj -> handle ) ; LOG_INFO ( \"handle:<S2SV_blank>\" FORMAT_H \"<S2SV_blank>[H<S2SV_blank>5]\\\\n\" , ARGS_H ( obj -> handle ) ) ; bit_write_TF ( dat , obj -> tio . unknown , obj -> size ) ; } } } if ( ! obj -> size ) { BITCODE_BL pos = bit_position ( dat ) ; assert ( address ) ; obj -> size = dat -> byte - address - 2 ; if ( dat -> bit ) obj -> size ++ ; if ( ! obj -> bitsize ) { LOG_TRACE ( \"-bitsize<S2SV_blank>calc<S2SV_blank>from<S2SV_blank>address<S2SV_blank>(no<S2SV_blank>handle)<S2SV_blank>@%lu.%u\\\\n\" , dat -> byte , dat -> bit ) ; obj -> bitsize = pos - ( obj -> address * 8 ) ; } bit_set_position ( dat , address * 8 ) ; if ( obj -> size > 0x7fff ) LOG_ERROR ( \"Unhandled<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>><S2SV_blank>0x7fff\" , ( unsigned ) obj -> size ) ; bit_write_MS ( dat , obj -> size ) ; LOG_TRACE ( \"-size:<S2SV_blank>%u<S2SV_blank>[MS]<S2SV_blank>@%lu\\\\n\" , obj -> size , address ) ; SINCE ( R_2013 ) { if ( ! obj -> handlestream_size && obj -> bitsize ) obj -> handlestream_size = obj -> size * 8 - obj -> bitsize ; bit_write_UMC ( dat , obj -> handlestream_size ) ; LOG_TRACE ( \"-handlestream_size:<S2SV_blank>%lu<S2SV_blank>[UMC]\\\\n\" , obj -> handlestream_size ) ; } SINCE ( R_2000 ) { if ( obj -> bitsize_pos && obj -> bitsize ) { bit_set_position ( dat , obj -> bitsize_pos ) ; bit_write_RL ( dat , obj -> bitsize ) ; LOG_TRACE ( \"-bitsize:<S2SV_blank>%u<S2SV_blank>[RL]<S2SV_blank>@%lu.%lu\\\\n\" , obj -> bitsize , obj -> bitsize_pos / 8 , obj -> bitsize_pos % 8 ) ; } } bit_set_position ( dat , pos ) ; } if ( dat -> bit ) LOG_TRACE ( \"padding:<S2SV_blank>+%d<S2SV_blank>[*B]\\\\n\" , 8 - dat -> bit ) while ( dat -> bit ) bit_write_B ( dat , 1 ) ; end_address = obj -> address + obj -> size ; if ( end_address != dat -> byte ) { if ( obj -> size ) LOG_WARN ( \"Wrong<S2SV_blank>object<S2SV_blank>size:<S2SV_blank>%lu<S2SV_blank>+<S2SV_blank>%u<S2SV_blank>=<S2SV_blank>%lu<S2SV_blank>!=<S2SV_blank>%lu:<S2SV_blank>%ld<S2SV_blank>off\" , obj -> address , obj -> size , end_address , dat -> byte , ( long ) ( end_address - dat -> byte ) ) ; dat -> byte = end_address ; } assert ( ! dat -> bit ) ; bit_write_CRC ( dat , address , 0xC0C1 ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> is_entity ) error <S2SV_ModStart> ) error = dwg_encode_UNKNOWN_ENT ( dat , obj ) ; else error = <S2SV_ModStart> obj ) ; <S2SV_ModEnd> } } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6194\n\n```\nCWE-119 static void * load_bytes ( RBinFile * arch , const ut8 * buf , ut64 sz , ut64 loaddr , Sdb * sdb ) { if ( ! buf || ! sz || sz == UT64_MAX ) { return NULL ; } RBuffer * tbuf = r_buf_new ( ) ; <S2SV_StartBug> r_buf_set_bytes ( tbuf , buf , sz ) ; <S2SV_EndBug> struct r_bin_bflt_obj * res = r_bin_bflt_new_buf ( tbuf ) ; r_buf_free ( tbuf ) ; return res ? res : NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; if ( ! tbuf ) { return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5359\n\n```\nCWE-119 static guint32 parse_wbxml_attribute_list ( proto_tree * tree , tvbuff_t * tvb , guint32 offset , guint32 str_tbl , guint8 level , guint8 * codepage_attr ) { guint32 tvb_len = tvb_reported_length ( tvb ) ; <S2SV_StartBug> guint32 off = offset ; <S2SV_EndBug> guint32 len ; guint str_len ; guint32 ent ; guint32 idx ; guint8 peek ; <S2SV_StartBug> DebugLog ( ( \"parse_wbxml_attr<S2SV_blank>(level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>offset<S2SV_blank>=<S2SV_blank>%u)\\\\n\" , level , offset ) ) ; <S2SV_EndBug> while ( off < tvb_len ) { peek = tvb_get_guint8 ( tvb , off ) ; DebugLog ( ( \"ATTR:<S2SV_blank>(top<S2SV_blank>of<S2SV_blank>while)<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%3u,<S2SV_blank>peek<S2SV_blank>=<S2SV_blank>0x%02X,<S2SV_blank>\" \"off<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>tvb_len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , level , peek , off , tvb_len ) ) ; if ( ( peek & 0x3F ) < 5 ) switch ( peek ) { case 0x00 : * codepage_attr = tvb_get_guint8 ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 2 , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>-->%3d<S2SV_blank>\" \"|<S2SV_blank>SWITCH_PAGE<S2SV_blank>(Attr<S2SV_blank>code<S2SV_blank>page)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>|\" , * codepage_attr ) ; off += 2 ; break ; case 0x01 : off ++ ; DebugLog ( ( \"ATTR:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , level , off - offset ) ) ; return ( off - offset ) ; case 0x02 : ent = tvb_get_guintvar ( tvb , off + 1 , & len ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>ENTITY<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\'&#%u;\\'\" , level , * codepage_attr , Indent ( level ) , ent ) ; off += 1 + len ; break ; case 0x03 : len = tvb_strsize ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>STR_I<S2SV_blank>(Inline<S2SV_blank>string)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\\\'%s\\\\\\'\" , level , * codepage_attr , Indent ( level ) , tvb_format_text ( tvb , off + 1 , len - 1 ) ) ; off += 1 + len ; break ; case 0x04 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; str_len = tvb_strsize ( tvb , str_tbl + idx ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>LITERAL<S2SV_blank>(Literal<S2SV_blank>Attribute)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>%s<%s<S2SV_blank>/>\" , level , * codepage_attr , Indent ( level ) , tvb_format_text ( tvb , str_tbl + idx , str_len - 1 ) ) ; off += 1 + len ; break ; case 0x40 : case 0x41 : case 0x42 : len = tvb_strsize ( tvb , off + 1 ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_I_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s(Inline<S2SV_blank>string<S2SV_blank>extension:<S2SV_blank>\\\\\\'%s\\\\\\')\" , level , * codepage_attr , peek & 0x0f , Indent ( level ) , tvb_format_text ( tvb , off + 1 , len - 1 ) ) ; off += 1 + len ; break ; case 0x80 : case 0x81 : case 0x82 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_T_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s(Extension<S2SV_blank>Token,<S2SV_blank>integer<S2SV_blank>value:<S2SV_blank>%u)\" , level , * codepage_attr , peek & 0x0f , Indent ( level ) , idx ) ; off += 1 + len ; break ; case 0x83 : idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; str_len = tvb_strsize ( tvb , str_tbl + idx ) ; proto_tree_add_text ( tree , tvb , off , 1 + len , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>STR_T<S2SV_blank>(Tableref<S2SV_blank>string)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\\\'%s\\\\\\'\" , level , * codepage_attr , Indent ( level ) , tvb_format_text ( tvb , str_tbl + idx , str_len - 1 ) ) ; off += 1 + len ; break ; case 0xC0 : case 0xC1 : case 0xC2 : proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>EXT_%1x<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Extension<S2SV_blank>Token)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s(Single-byte<S2SV_blank>extension)\" , level , * codepage_attr , peek & 0x0f , Indent ( level ) ) ; off ++ ; break ; case 0xC3 : if ( tvb_get_guint8 ( tvb , 0 ) ) { idx = tvb_get_guintvar ( tvb , off + 1 , & len ) ; proto_tree_add_text ( tree , tvb , off , 1 + len + idx , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>OPAQUE<S2SV_blank>(Opaque<S2SV_blank>data)<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s(%d<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>opaque<S2SV_blank>data)\" , level , * codepage_attr , Indent ( level ) , idx ) ; off += 1 + len + idx ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>RESERVED_2<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Invalid<S2SV_blank>Token!)<S2SV_blank>\" \"|<S2SV_blank>WBXML<S2SV_blank>1.0<S2SV_blank>parsing<S2SV_blank>stops<S2SV_blank>here.\" , level , * codepage_attr ) ; off = tvb_len ; DebugLog ( ( \"ATTR:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u\\\\n\" , level , off - offset ) ) ; return ( off - offset ) ; } break ; default : proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank>%-10s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(Invalid<S2SV_blank>Token!)<S2SV_blank>\" \"|<S2SV_blank>WBXML<S2SV_blank>parsing<S2SV_blank>stops<S2SV_blank>here.\" , level , * codepage_attr , val_to_str_ext ( peek , & vals_wbxml1x_global_tokens_ext , \"(unknown<S2SV_blank>0x%x)\" ) ) ; off = tvb_len ; break ; } else { if ( peek & 0x80 ) { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>attrValue<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%sattrValue_0x%02X\" , level , * codepage_attr , peek & 0x7f , Indent ( level ) , peek ) ; off ++ ; } else { proto_tree_add_text ( tree , tvb , off , 1 , \"<S2SV_blank><S2SV_blank>%3d<S2SV_blank>|<S2SV_blank><S2SV_blank>Attr<S2SV_blank>|<S2SV_blank>A<S2SV_blank>%3d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>Known<S2SV_blank>attrStart<S2SV_blank>0x%02X<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"|<S2SV_blank><S2SV_blank><S2SV_blank>%sattrStart_0x%02X\" , level , * codepage_attr , peek & 0x7f , Indent ( level ) , peek ) ; off ++ ; } } <S2SV_StartBug> } <S2SV_EndBug> DebugLog ( ( \"ATTR:<S2SV_blank>level<S2SV_blank>=<S2SV_blank>%u,<S2SV_blank>Return:<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%u<S2SV_blank>(end<S2SV_blank>of<S2SV_blank>function<S2SV_blank>body)\\\\n\" , level , off - offset ) ) ; return ( off - offset ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> off = offset , last_off <S2SV_ModStart> offset ) ) ; last_off = off <S2SV_ModStart> ; } } if ( off < last_off ) { THROW ( ReportedBoundsError ) ; } last_off = off ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12990\n\n```\nCWE-835 static const u_char * ikev2_n_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { const struct ikev2_n * p ; struct ikev2_n n ; const u_char * cp ; <S2SV_StartBug> u_char showspi , showdata , showsomedata ; <S2SV_EndBug> const char * notify_name ; uint32_t type ; p = ( const struct ikev2_n * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & n , ext , sizeof ( n ) ) ; ikev2_pay_print ( ndo , NPSTR ( ISAKMP_NPTYPE_N ) , n . h . critical ) ; showspi = 1 ; <S2SV_StartBug> showdata = 0 ; <S2SV_EndBug> showsomedata = 0 ; notify_name = NULL ; ND_PRINT ( ( ndo , \"<S2SV_blank>prot_id=%s\" , PROTOIDSTR ( n . prot_id ) ) ) ; type = ntohs ( n . type ) ; switch ( type ) { case IV2_NOTIFY_UNSUPPORTED_CRITICAL_PAYLOAD : notify_name = \"unsupported_critical_payload\" ; showspi = 0 ; break ; case IV2_NOTIFY_INVALID_IKE_SPI : notify_name = \"invalid_ike_spi\" ; showspi = 1 ; break ; case IV2_NOTIFY_INVALID_MAJOR_VERSION : notify_name = \"invalid_major_version\" ; showspi = 0 ; break ; case IV2_NOTIFY_INVALID_SYNTAX : notify_name = \"invalid_syntax\" ; showspi = 1 ; break ; case IV2_NOTIFY_INVALID_MESSAGE_ID : notify_name = \"invalid_message_id\" ; showspi = 1 ; break ; case IV2_NOTIFY_INVALID_SPI : notify_name = \"invalid_spi\" ; showspi = 1 ; break ; case IV2_NOTIFY_NO_PROPOSAL_CHOSEN : notify_name = \"no_protocol_chosen\" ; showspi = 1 ; break ; case IV2_NOTIFY_INVALID_KE_PAYLOAD : notify_name = \"invalid_ke_payload\" ; showspi = 1 ; break ; case IV2_NOTIFY_AUTHENTICATION_FAILED : notify_name = \"authentication_failed\" ; showspi = 1 ; break ; case IV2_NOTIFY_SINGLE_PAIR_REQUIRED : notify_name = \"single_pair_required\" ; showspi = 1 ; break ; case IV2_NOTIFY_NO_ADDITIONAL_SAS : notify_name = \"no_additional_sas\" ; showspi = 0 ; break ; case IV2_NOTIFY_INTERNAL_ADDRESS_FAILURE : notify_name = \"internal_address_failure\" ; showspi = 0 ; break ; case IV2_NOTIFY_FAILED_CP_REQUIRED : notify_name = \"failed:cp_required\" ; showspi = 0 ; break ; case IV2_NOTIFY_INVALID_SELECTORS : notify_name = \"invalid_selectors\" ; showspi = 0 ; break ; case IV2_NOTIFY_INITIAL_CONTACT : notify_name = \"initial_contact\" ; showspi = 0 ; break ; case IV2_NOTIFY_SET_WINDOW_SIZE : notify_name = \"set_window_size\" ; showspi = 0 ; break ; case IV2_NOTIFY_ADDITIONAL_TS_POSSIBLE : notify_name = \"additional_ts_possible\" ; showspi = 0 ; break ; case IV2_NOTIFY_IPCOMP_SUPPORTED : notify_name = \"ipcomp_supported\" ; showspi = 0 ; break ; case IV2_NOTIFY_NAT_DETECTION_SOURCE_IP : notify_name = \"nat_detection_source_ip\" ; showspi = 1 ; break ; case IV2_NOTIFY_NAT_DETECTION_DESTINATION_IP : notify_name = \"nat_detection_destination_ip\" ; showspi = 1 ; break ; case IV2_NOTIFY_COOKIE : notify_name = \"cookie\" ; showspi = 1 ; <S2SV_StartBug> showsomedata = 1 ; <S2SV_EndBug> showdata = 0 ; break ; case IV2_NOTIFY_USE_TRANSPORT_MODE : notify_name = \"use_transport_mode\" ; showspi = 0 ; break ; case IV2_NOTIFY_HTTP_CERT_LOOKUP_SUPPORTED : notify_name = \"http_cert_lookup_supported\" ; showspi = 0 ; break ; case IV2_NOTIFY_REKEY_SA : notify_name = \"rekey_sa\" ; showspi = 1 ; break ; case IV2_NOTIFY_ESP_TFC_PADDING_NOT_SUPPORTED : notify_name = \"tfc_padding_not_supported\" ; showspi = 0 ; break ; case IV2_NOTIFY_NON_FIRST_FRAGMENTS_ALSO : notify_name = \"non_first_fragment_also\" ; showspi = 0 ; break ; default : if ( type < 8192 ) { notify_name = \"error\" ; } else if ( type < 16384 ) { notify_name = \"private-error\" ; } else if ( type < 40960 ) { notify_name = \"status\" ; } else { notify_name = \"private-status\" ; } } if ( notify_name ) { ND_PRINT ( ( ndo , \"<S2SV_blank>type=%u(%s)\" , type , notify_name ) ) ; } if ( showspi && n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } cp = ( const u_char * ) ( p + 1 ) + n . spi_size ; <S2SV_StartBug> if ( 3 < ndo -> ndo_vflag ) { <S2SV_EndBug> showdata = 1 ; } <S2SV_StartBug> if ( ( showdata || ( showsomedata && ep - cp < 30 ) ) && cp < ep ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>data=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( cp ) , ep - cp ) ) goto trunc ; ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_StartBug> } else if ( showsomedata && cp < ep ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! ike_show_somedata ( ndo , cp , ep ) ) goto trunc ; <S2SV_EndBug> } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; u_char showspi <S2SV_ModEnd> , showsomedata ; <S2SV_ModStart> = 1 ; <S2SV_ModEnd> showsomedata = 0 <S2SV_ModStart> showsomedata = 1 <S2SV_ModEnd> ; break ; <S2SV_ModStart> ; if ( cp < ep ) { if ( <S2SV_ModEnd> ndo -> ndo_vflag <S2SV_ModStart> ndo -> ndo_vflag > 3 <S2SV_ModEnd> || ( showsomedata <S2SV_ModStart> 30 ) ) <S2SV_ModEnd> { ND_PRINT ( <S2SV_ModStart> if ( showsomedata <S2SV_ModEnd> ) { if <S2SV_ModStart> goto trunc ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9763\n\n```\nCWE-119 void grubfs_free ( GrubFS * gf ) { if ( gf ) { <S2SV_StartBug> if ( gf -> file && gf -> file -> device ) <S2SV_EndBug> <S2SV_StartBug> free ( gf -> file -> device -> disk ) ; <S2SV_EndBug> free ( gf -> file ) ; free ( gf ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> device ) { <S2SV_ModStart> disk ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 NOEXPORT void print_cipher ( CLI * c ) { SSL_CIPHER * cipher ; # ifndef OPENSSL_NO_COMP const COMP_METHOD * compression , * expansion ; # endif if ( c -> opt -> log_level < LOG_INFO ) return ; s_log ( LOG_INFO , \"TLS<S2SV_blank>%s:<S2SV_blank>%s\" , c -> opt -> option . client ? \"connected\" : \"accepted\" , SSL_session_reused ( c -> ssl ) && ! c -> flag . psk ? \"previous<S2SV_blank>session<S2SV_blank>reused\" : \"new<S2SV_blank>session<S2SV_blank>negotiated\" ) ; cipher = ( SSL_CIPHER * ) SSL_get_current_cipher ( c -> ssl ) ; s_log ( LOG_INFO , \"%s<S2SV_blank>ciphersuite:<S2SV_blank>%s<S2SV_blank>(%d-bit<S2SV_blank>encryption)\" , SSL_get_version ( c -> ssl ) , SSL_CIPHER_get_name ( cipher ) , SSL_CIPHER_get_bits ( cipher , NULL ) ) ; <S2SV_StartBug> # ifndef OPENSSL_NO_COMP <S2SV_EndBug> compression = SSL_get_current_compression ( c -> ssl ) ; expansion = SSL_get_current_expansion ( c -> ssl ) ; s_log ( compression || expansion ? LOG_INFO : LOG_DEBUG , \"Compression:<S2SV_blank>%s,<S2SV_blank>expansion:<S2SV_blank>%s\" , compression ? SSL_COMP_get_name ( compression ) : \"null\" , expansion ? SSL_COMP_get_name ( expansion ) : \"null\" ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; # if OPENSSL_VERSION_NUMBER >= 0x10101000L print_tmp_key ( c -> ssl ) ; # endif #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4532\n\n```\nCWE-119 static void stellaris_enet_unrealize ( DeviceState * dev , Error * * errp ) { stellaris_enet_state * s = STELLARIS_ENET ( dev ) ; <S2SV_StartBug> unregister_savevm ( DEVICE ( s ) , \"stellaris_enet\" , s ) ; <S2SV_EndBug> memory_region_destroy ( & s -> mmio ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) ; <S2SV_ModEnd> memory_region_destroy ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7184\n\n```\nCWE-000 static inline int xfrm_replay_verify_len ( struct xfrm_replay_state_esn * replay_esn , struct nlattr * rp ) { struct xfrm_replay_state_esn * up ; int ulen ; if ( ! replay_esn || ! rp ) return 0 ; up = nla_data ( rp ) ; ulen = xfrm_replay_state_esn_len ( up ) ; <S2SV_StartBug> if ( nla_len ( rp ) < ulen || xfrm_replay_state_esn_len ( replay_esn ) != ulen ) <S2SV_EndBug> return - EINVAL ; if ( up -> replay_window > up -> bmp_len * sizeof ( __u32 ) * 8 ) return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) != ulen || replay_esn -> bmp_len != up -> bmp_len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7115\n\n```\nCWE-119 int add_packetdata ( struct mt_packet * packet , unsigned char * data , unsigned short length ) { <S2SV_StartBug> if ( packet -> size + length > MT_PACKET_LEN ) { <S2SV_EndBug> fprintf ( stderr , _ ( \"add_control_packet:<S2SV_blank>ERROR,<S2SV_blank>too<S2SV_blank>large<S2SV_blank>packet.<S2SV_blank>Exceeds<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" ) , MT_PACKET_LEN ) ; return - 1 ; } memcpy ( packet -> data + packet -> size , data , length ) ; packet -> size += length ; return length ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( length > MT_PACKET_LEN - <S2SV_ModStart> packet -> size <S2SV_ModEnd> ) { fprintf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_save_layer_context ( VP9_COMP * const cpi ) { <S2SV_StartBug> const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> <S2SV_StartBug> LAYER_CONTEXT * const lc = get_layer_context ( & cpi -> svc ) ; <S2SV_EndBug> lc -> rc = cpi -> rc ; lc -> twopass = cpi -> twopass ; lc -> target_bandwidth = ( int ) oxcf -> target_bandwidth ; <S2SV_StartBug> lc -> starting_buffer_level = oxcf -> starting_buffer_level ; <S2SV_EndBug> lc -> optimal_buffer_level = oxcf -> optimal_buffer_level ; lc -> maximum_buffer_size = oxcf -> maximum_buffer_size ; <S2SV_StartBug> lc -> framerate = cpi -> output_framerate ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> = get_layer_context ( cpi <S2SV_ModEnd> ) ; lc <S2SV_ModStart> ; lc -> alt_ref_source <S2SV_ModEnd> = cpi -> <S2SV_ModStart> = cpi -> alt_ref_source <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2636\n\n```\nCWE-399 void br_mdb_notify ( struct net_device * dev , struct net_bridge_port * port , struct br_ip * group , int type ) { <S2SV_StartBug> struct br_mdb_entry entry ; <S2SV_EndBug> entry . ifindex = port -> dev -> ifindex ; entry . addr . proto = group -> proto ; entry . addr . u . ip4 = group -> u . ip4 ; # if IS_ENABLED ( CONFIG_IPV6 ) entry . addr . u . ip6 = group -> u . ip6 ; # endif __br_mdb_notify ( dev , & entry , type ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct br_mdb_entry entry ; memset ( & entry , 0 , sizeof ( entry ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0037\n\n```\nCWE-200 int raptor_turtle_writer_set_option ( raptor_turtle_writer * turtle_writer , raptor_option option , int value ) { if ( value < 0 || ! raptor_option_is_valid_for_area ( option , RAPTOR_OPTION_AREA_TURTLE_WRITER ) ) return 1 ; switch ( option ) { case RAPTOR_OPTION_WRITER_AUTO_INDENT : if ( value ) turtle_writer -> flags |= TURTLE_WRITER_AUTO_INDENT ; else turtle_writer -> flags &= ~ TURTLE_WRITER_AUTO_INDENT ; break ; case RAPTOR_OPTION_WRITER_INDENT_WIDTH : turtle_writer -> indent = value ; break ; case RAPTOR_OPTION_WRITER_AUTO_EMPTY : case RAPTOR_OPTION_WRITER_XML_VERSION : case RAPTOR_OPTION_WRITER_XML_DECLARATION : break ; case RAPTOR_OPTION_SCANNING : case RAPTOR_OPTION_ALLOW_NON_NS_ATTRIBUTES : case RAPTOR_OPTION_ALLOW_OTHER_PARSETYPES : case RAPTOR_OPTION_ALLOW_BAGID : case RAPTOR_OPTION_ALLOW_RDF_TYPE_RDF_LIST : case RAPTOR_OPTION_NORMALIZE_LANGUAGE : case RAPTOR_OPTION_NON_NFC_FATAL : case RAPTOR_OPTION_WARN_OTHER_PARSETYPES : case RAPTOR_OPTION_CHECK_RDF_ID : case RAPTOR_OPTION_HTML_TAG_SOUP : case RAPTOR_OPTION_MICROFORMATS : case RAPTOR_OPTION_HTML_LINK : case RAPTOR_OPTION_WWW_TIMEOUT : case RAPTOR_OPTION_STRICT : case RAPTOR_OPTION_NO_NET : case RAPTOR_OPTION_NO_FILE : <S2SV_StartBug> case RAPTOR_OPTION_RELATIVE_URIS : <S2SV_EndBug> case RAPTOR_OPTION_RESOURCE_BORDER : case RAPTOR_OPTION_LITERAL_BORDER : case RAPTOR_OPTION_BNODE_BORDER : case RAPTOR_OPTION_RESOURCE_FILL : case RAPTOR_OPTION_LITERAL_FILL : case RAPTOR_OPTION_BNODE_FILL : case RAPTOR_OPTION_JSON_CALLBACK : case RAPTOR_OPTION_JSON_EXTRA_DATA : case RAPTOR_OPTION_RSS_TRIPLES : case RAPTOR_OPTION_ATOM_ENTRY_URI : case RAPTOR_OPTION_PREFIX_ELEMENTS : case RAPTOR_OPTION_WRITE_BASE_URI : case RAPTOR_OPTION_WWW_HTTP_CACHE_CONTROL : case RAPTOR_OPTION_WWW_HTTP_USER_AGENT : case RAPTOR_OPTION_WWW_CERT_FILENAME : case RAPTOR_OPTION_WWW_CERT_TYPE : case RAPTOR_OPTION_WWW_CERT_PASSPHRASE : case RAPTOR_OPTION_WWW_SSL_VERIFY_PEER : case RAPTOR_OPTION_WWW_SSL_VERIFY_HOST : default : return - 1 ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RAPTOR_OPTION_NO_FILE : case RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES : case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000251\n\n```\nCWE-787 static int l2cap_sock_listen ( struct socket * sock , int backlog ) { struct sock * sk = sock -> sk ; int err = 0 ; BT_DBG ( \"sk<S2SV_blank>%p<S2SV_blank>backlog<S2SV_blank>%d\" , sk , backlog ) ; lock_sock ( sk ) ; if ( sk -> sk_state != BT_BOUND || sock -> type != SOCK_SEQPACKET ) { err = - EBADFD ; goto done ; } switch ( l2cap_pi ( sk ) -> mode ) { case L2CAP_MODE_BASIC : break ; case L2CAP_MODE_ERTM : <S2SV_StartBug> if ( enable_ertm ) <S2SV_EndBug> break ; default : err = - ENOTSUPP ; goto done ; } if ( ! l2cap_pi ( sk ) -> psm ) { bdaddr_t * src = & bt_sk ( sk ) -> src ; u16 psm ; err = - EINVAL ; write_lock_bh ( & l2cap_sk_list . lock ) ; for ( psm = 0x1001 ; psm < 0x1100 ; psm += 2 ) if ( ! __l2cap_get_sock_by_addr ( cpu_to_le16 ( psm ) , src ) ) { l2cap_pi ( sk ) -> psm = cpu_to_le16 ( psm ) ; l2cap_pi ( sk ) -> sport = cpu_to_le16 ( psm ) ; err = 0 ; break ; } write_unlock_bh ( & l2cap_sk_list . lock ) ; if ( err < 0 ) goto done ; } sk -> sk_max_ack_backlog = backlog ; sk -> sk_ack_backlog = 0 ; sk -> sk_state = BT_LISTEN ; done : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case L2CAP_MODE_ERTM : case L2CAP_MODE_STREAMING :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int check_dual_ref_flags ( VP9_COMP * cpi ) { const int ref_flags = cpi -> ref_frame_flags ; <S2SV_StartBug> if ( vp9_segfeature_active ( & cpi -> common . seg , 1 , SEG_LVL_REF_FRAME ) ) { <S2SV_EndBug> return 0 ; } else { return ( ! ! ( ref_flags & VP9_GOLD_FLAG ) + ! ! ( ref_flags & VP9_LAST_FLAG ) + ! ! ( ref_flags & VP9_ALT_FLAG ) ) >= 2 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( segfeature_active <S2SV_ModEnd> ( & cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35518\n\n```\nCWE-200 int ldbm_back_bind ( Slapi_PBlock * pb ) { backend * be ; ldbm_instance * inst ; ber_tag_t method ; struct berval * cred ; struct ldbminfo * li ; struct backentry * e ; Slapi_Attr * attr ; Slapi_Value * * bvals ; entry_address * addr ; back_txn txn = { NULL } ; int rc = SLAPI_BIND_SUCCESS ; int result_sent = 0 ; slapi_pblock_get ( pb , SLAPI_BACKEND , & be ) ; slapi_pblock_get ( pb , SLAPI_PLUGIN_PRIVATE , & li ) ; slapi_pblock_get ( pb , SLAPI_TARGET_ADDRESS , & addr ) ; slapi_pblock_get ( pb , SLAPI_BIND_METHOD , & method ) ; slapi_pblock_get ( pb , SLAPI_BIND_CREDENTIALS , & cred ) ; slapi_pblock_get ( pb , SLAPI_TXN , & txn . back_txn_txn ) ; if ( ! txn . back_txn_txn ) { dblayer_txn_init ( li , & txn ) ; slapi_pblock_set ( pb , SLAPI_TXN , txn . back_txn_txn ) ; } inst = ( ldbm_instance * ) be -> be_instance_info ; if ( inst -> inst_ref_count ) { slapi_counter_increment ( inst -> inst_ref_count ) ; } else { slapi_log_err ( SLAPI_LOG_ERR , \"ldbm_back_bind\" , \"instance<S2SV_blank>%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist.\\\\n\" , inst -> inst_name ) ; return ( SLAPI_BIND_FAIL ) ; } if ( method == LDAP_AUTH_SIMPLE && cred -> bv_len == 0 ) { rc = SLAPI_BIND_ANONYMOUS ; goto bail ; } if ( ( e = find_entry ( pb , be , addr , & txn , & result_sent ) ) == NULL ) { rc = SLAPI_BIND_FAIL ; if ( ! result_sent ) { slapi_send_ldap_result ( pb , LDAP_INAPPROPRIATE_AUTH , NULL , NULL , 0 , NULL ) ; } goto bail ; } switch ( method ) { case LDAP_AUTH_SIMPLE : { Slapi_Value cv ; if ( slapi_entry_attr_find ( e -> ep_entry , \"userpassword\" , & attr ) != 0 ) { <S2SV_StartBug> slapi_send_ldap_result ( pb , LDAP_INAPPROPRIATE_AUTH , NULL , <S2SV_EndBug> NULL , 0 , NULL ) ; CACHE_RETURN ( & inst -> inst_cache , & e ) ; rc = SLAPI_BIND_FAIL ; goto bail ; } bvals = attr_get_present_values ( attr ) ; slapi_value_init_berval ( & cv , cred ) ; if ( slapi_pw_find_sv ( bvals , & cv ) != 0 ) { slapi_pblock_set ( pb , SLAPI_PB_RESULT_TEXT , \"Invalid<S2SV_blank>credentials\" ) ; slapi_send_ldap_result ( pb , LDAP_INVALID_CREDENTIALS , NULL , NULL , 0 , NULL ) ; CACHE_RETURN ( & inst -> inst_cache , & e ) ; value_done ( & cv ) ; rc = SLAPI_BIND_FAIL ; goto bail ; } value_done ( & cv ) ; } break ; default : slapi_send_ldap_result ( pb , LDAP_STRONG_AUTH_NOT_SUPPORTED , NULL , \"auth<S2SV_blank>method<S2SV_blank>not<S2SV_blank>supported\" , 0 , NULL ) ; CACHE_RETURN ( & inst -> inst_cache , & e ) ; rc = SLAPI_BIND_FAIL ; goto bail ; } CACHE_RETURN ( & inst -> inst_cache , & e ) ; bail : if ( inst -> inst_ref_count ) { slapi_counter_decrement ( inst -> inst_ref_count ) ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { slapi_pblock_set ( pb , SLAPI_PB_RESULT_TEXT , \"Entry<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>userpassword<S2SV_blank>set\" ) ; <S2SV_ModStart> ( pb , LDAP_INVALID_CREDENTIALS , NULL , <S2SV_ModEnd> NULL , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0555\n\n```\nCWE-200 WORD32 ih264d_video_decode ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ( dec_hdl -> pv_codec_handle ) ; WORD32 i4_err_status = 0 ; UWORD8 * pu1_buf = NULL ; WORD32 buflen ; UWORD32 u4_max_ofst , u4_length_of_start_code = 0 ; UWORD32 bytes_consumed = 0 ; UWORD32 cur_slice_is_nonref = 0 ; UWORD32 u4_next_is_aud ; UWORD32 u4_first_start_code_found = 0 ; WORD32 ret = 0 , api_ret_value = IV_SUCCESS ; WORD32 header_data_left = 0 , frame_data_left = 0 ; UWORD8 * pu1_bitstrm_buf ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; ithread_set_name ( ( void * ) \"Parse_thread\" ) ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size ; u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } ps_dec -> pv_dec_out = ps_dec_op ; ps_dec -> process_called = 1 ; if ( ps_dec -> init_done != 1 ) { return IV_FAIL ; } DATA_SYNC ( ) ; if ( 0 == ps_dec -> u1_flushfrm ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } ps_dec -> u1_pic_decode_done = 0 ; ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec -> ps_out_buffer = NULL ; if ( ps_dec_ip -> u4_size >= offsetof ( ivd_video_decode_ip_t , s_out_buffer ) ) ps_dec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 0 ; ps_dec -> s_disp_op . u4_error_code = 1 ; ps_dec -> u4_fmt_conv_num_rows = FMT_CONV_NUM_ROWS ; ps_dec -> u4_stop_threads = 0 ; if ( 0 == ps_dec -> u4_share_disp_buf && ps_dec -> i4_decode_header == 0 ) { UWORD32 i ; if ( ps_dec -> ps_out_buffer -> u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec -> ps_out_buffer -> u4_num_bufs ; i ++ ) { if ( ps_dec -> ps_out_buffer -> pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec -> ps_out_buffer -> u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } if ( ps_dec -> u4_total_frames_decoded >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code = ERROR_FRAME_LIMIT_OVER ; return IV_FAIL ; } ps_dec -> u4_ts = ps_dec_ip -> u4_ts ; ps_dec_op -> u4_error_code = 0 ; ps_dec_op -> e_pic_type = - 1 ; ps_dec_op -> u4_output_present = 0 ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; ps_dec -> u4_slice_start_code_found = 0 ; if ( ps_dec -> u1_init_dec_flag == 1 && ps_dec -> u4_share_disp_buf == 1 && ps_dec -> u1_flushfrm == 0 ) { UWORD32 i ; WORD32 disp_avail = 0 , free_id ; for ( i = 0 ; i < ps_dec -> u1_pic_bufs ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_mapping [ i ] || 1 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) { disp_avail = 1 ; break ; } } if ( 0 == disp_avail ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } while ( 1 ) { pic_buffer_t * ps_pic_buf ; ps_pic_buf = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & free_id ) ; if ( ps_pic_buf == NULL ) { UWORD32 i , display_queued = 0 ; for ( i = 0 ; i < ( MAX_DISP_BUFS_NEW ) ; i ++ ) { if ( 0 != ps_dec -> u4_disp_buf_mapping [ i ] ) { display_queued = 1 ; break ; } } if ( 1 == display_queued ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } } else { if ( 1 == ps_dec -> u4_disp_buf_mapping [ free_id ] ) { ih264_buf_mgr_set_status ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; } else { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; break ; } } } } if ( ps_dec -> u1_flushfrm && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; ps_dec -> u4_output_present = 1 ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; ps_dec_op -> u4_new_seq = 0 ; ps_dec_op -> u4_output_present = ps_dec -> u4_output_present ; ps_dec_op -> u4_progressive_frame_flag = ps_dec -> s_disp_op . u4_progressive_frame_flag ; ps_dec_op -> e_output_format = ps_dec -> s_disp_op . e_output_format ; ps_dec_op -> s_disp_frm_buf = ps_dec -> s_disp_op . s_disp_frm_buf ; ps_dec_op -> e4_fld_type = ps_dec -> s_disp_op . e4_fld_type ; ps_dec_op -> u4_ts = ps_dec -> s_disp_op . u4_ts ; ps_dec_op -> u4_disp_buf_id = ps_dec -> s_disp_op . u4_disp_buf_id ; ps_dec_op -> u4_is_ref_flag = - 1 ; ps_dec_op -> e_pic_type = IV_NA_FRAME ; ps_dec_op -> u4_frame_decoded_flag = 0 ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { return ( IV_SUCCESS ) ; } else return ( IV_FAIL ) ; } if ( ps_dec -> u1_res_changed == 1 ) { ih264d_init_decoder ( ps_dec ) ; } ps_dec -> u4_prev_nal_skipped = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> cur_dec_mb_num = 0 ; ps_dec -> cur_recon_mb_num = 0 ; <S2SV_StartBug> ps_dec -> u4_first_slice_in_pic = 2 ; <S2SV_EndBug> ps_dec -> u1_first_pb_nal_in_pic = 1 ; ps_dec -> u1_slice_header_done = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> u4_dec_thread_created = 0 ; ps_dec -> u4_bs_deblk_thread_created = 0 ; ps_dec -> u4_cur_bs_mb_num = 0 ; ps_dec -> u4_start_recon_deblk = 0 ; DEBUG_THREADS_PRINTF ( \"<S2SV_blank>Starting<S2SV_blank>process<S2SV_blank>call\\\\n\" ) ; ps_dec -> u4_pic_buf_got = 0 ; do { pu1_buf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer + ps_dec_op -> u4_num_bytes_consumed ; u4_max_ofst = ps_dec_ip -> u4_num_Bytes - ps_dec_op -> u4_num_bytes_consumed ; pu1_bitstrm_buf = ps_dec -> ps_mem_tab [ MEM_REC_BITSBUF ] . pv_base ; u4_next_is_aud = 0 ; buflen = ih264d_find_start_code ( pu1_buf , 0 , u4_max_ofst , & u4_length_of_start_code , & u4_next_is_aud ) ; if ( buflen == - 1 ) buflen = 0 ; buflen = MIN ( buflen , ( WORD32 ) ( ps_dec -> ps_mem_tab [ MEM_REC_BITSBUF ] . u4_mem_size - 8 ) ) ; bytes_consumed = buflen + u4_length_of_start_code ; ps_dec_op -> u4_num_bytes_consumed += bytes_consumed ; if ( buflen >= MAX_NAL_UNIT_SIZE ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; H264_DEC_DEBUG_PRINT ( \"\\\\nNal<S2SV_blank>Size<S2SV_blank>exceeded<S2SV_blank>%d,<S2SV_blank>Processing<S2SV_blank>Stopped..\\\\n\" , MAX_NAL_UNIT_SIZE ) ; ps_dec -> i4_error_code = 1 << IVD_CORRUPTEDDATA ; ps_dec_op -> e_pic_type = - 1 ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_pic_buf_got == 0 ) { if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return IV_FAIL ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } { UWORD8 u1_firstbyte , u1_nal_ref_idc ; if ( ps_dec -> i4_app_skip_mode == IVD_SKIP_B ) { u1_firstbyte = * ( pu1_buf + u4_length_of_start_code ) ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_firstbyte ) ) ; if ( u1_nal_ref_idc == 0 ) { cur_slice_is_nonref = 1 ; continue ; } else { if ( 1 == cur_slice_is_nonref ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> e_pic_type = IV_B_FRAME ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } } } } if ( buflen ) { memcpy ( pu1_bitstrm_buf , pu1_buf + u4_length_of_start_code , buflen ) ; u4_first_start_code_found = 1 ; } else { if ( u4_first_start_code_found == 0 ) { ps_dec -> i4_error_code = ERROR_START_CODE_NOT_FOUND ; ps_dec_op -> u4_error_code |= 1 << IVD_INSUFFICIENTDATA ; if ( ps_dec -> u4_pic_buf_got == 0 ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; ps_dec_op -> u4_error_code = ps_dec -> i4_error_code ; ps_dec_op -> u4_frame_decoded_flag = 0 ; return ( IV_FAIL ) ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } else { frame_data_left = 0 ; header_data_left = 0 ; continue ; } } ps_dec -> u4_return_to_app = 0 ; ret = ih264d_parse_nal_unit ( dec_hdl , ps_dec_op , pu1_bitstrm_buf , buflen ) ; if ( ret != OK ) { UWORD32 error = ih264d_map_error ( ret ) ; ps_dec_op -> u4_error_code = error | ret ; api_ret_value = IV_FAIL ; if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ps_dec -> u4_slice_start_code_found = 0 ; break ; } if ( ( ret == ERROR_INCOMPLETE_FRAME ) || ( ret == ERROR_DANGLING_FIELD_IN_PIC ) ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; api_ret_value = IV_FAIL ; break ; } if ( ret == ERROR_IN_LAST_SLICE_OF_PIC ) { api_ret_value = IV_FAIL ; break ; } } if ( ps_dec -> u4_return_to_app ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } header_data_left = ( ( ps_dec -> i4_decode_header == 1 ) && ( ps_dec -> i4_header_decoded != 3 ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; frame_data_left = ( ( ( ps_dec -> i4_decode_header == 0 ) && ( ( ps_dec -> u1_pic_decode_done == 0 ) || ( u4_next_is_aud == 1 ) ) ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; } while ( ( header_data_left == 1 ) || ( frame_data_left == 1 ) ) ; if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ps_dec -> u2_total_mbs_coded < ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { WORD32 num_mb_skipped ; WORD32 prev_slice_err ; pocstruct_t temp_poc ; WORD32 ret1 ; WORD32 ht_in_mbs ; ht_in_mbs = ps_dec -> u2_pic_ht >> ( 4 + ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ; num_mb_skipped = ( ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u4_pic_buf_got == 0 ) ) prev_slice_err = 1 ; else prev_slice_err = 2 ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u2_total_mbs_coded == 0 ) ) prev_slice_err = 1 ; ret1 = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL , ps_dec -> ps_cur_slice -> u2_frame_num , & temp_poc , prev_slice_err ) ; if ( ( ret1 == ERROR_UNAVAIL_PICBUF_T ) || ( ret1 == ERROR_UNAVAIL_MVBUF_T ) || ( ret1 == ERROR_INV_SPS_PPS_T ) ) { ret = ret1 ; } } if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } if ( ret == IVD_RES_CHANGED ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; } return IV_FAIL ; } if ( ps_dec -> u1_separate_parse ) { if ( ps_dec -> u4_num_cores == 2 ) { if ( ( ps_dec -> u4_nmb_deblk == 0 ) && ( ps_dec -> u4_start_recon_deblk == 1 ) && ( ps_dec -> ps_cur_sps -> u1_mb_aff_flag == 0 ) ) { UWORD32 u4_num_mbs , u4_max_addr ; tfr_ctxt_t s_tfr_ctxt ; tfr_ctxt_t * ps_tfr_cxt = & s_tfr_ctxt ; pad_mgr_t * ps_pad_mgr = & ps_dec -> s_pad_mgr ; u4_max_addr = ( ps_dec -> u2_frm_wd_in_mbs * ps_dec -> u2_frm_ht_in_mbs ) - 1 ; ps_dec -> u4_cur_bs_mb_num = u4_max_addr + 1 ; ih264d_init_deblk_tfr_ctxt ( ps_dec , ps_pad_mgr , ps_tfr_cxt , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; u4_num_mbs = u4_max_addr - ps_dec -> u4_cur_deblk_mb_num + 1 ; DEBUG_PERF_PRINTF ( \"mbs<S2SV_blank>left<S2SV_blank>for<S2SV_blank>deblocking=<S2SV_blank>%d<S2SV_blank>\\\\n\" , u4_num_mbs ) ; if ( u4_num_mbs != 0 ) ih264d_check_mb_map_deblk ( ps_dec , u4_num_mbs , ps_tfr_cxt , 1 ) ; ps_dec -> u4_start_recon_deblk = 0 ; } } ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } } DATA_SYNC ( ) ; if ( ( ps_dec_op -> u4_error_code & 0xff ) != ERROR_DYNAMIC_RESOLUTION_NOT_SUPPORTED ) { ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; } if ( ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> i4_decode_header == 1 && ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> u4_prev_nal_skipped ) { ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ERROR_DANGLING_FIELD_IN_PIC != i4_err_status ) ) { if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) { if ( 1 == ps_dec -> ps_cur_slice -> u1_bottom_field_flag ) { ps_dec -> u1_top_bottom_decoded |= BOT_FIELD_ONLY ; } else { ps_dec -> u1_top_bottom_decoded |= TOP_FIELD_ONLY ; } } if ( ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) && ( ps_dec -> u4_pic_buf_got == 1 ) ) { ret = ih264d_deblock_display ( ps_dec ) ; } if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_dec -> i4_frametype = IV_IDR_FRAME ; } else if ( ps_dec -> i4_pic_type == B_SLICE ) { ps_dec -> i4_frametype = IV_B_FRAME ; } else if ( ps_dec -> i4_pic_type == P_SLICE ) { ps_dec -> i4_frametype = IV_P_FRAME ; } else if ( ps_dec -> i4_pic_type == I_SLICE ) { ps_dec -> i4_frametype = IV_I_FRAME ; } else { H264_DEC_DEBUG_PRINT ( \"Shouldn\\'t<S2SV_blank>come<S2SV_blank>here\\\\n\" ) ; } ps_dec -> i4_content_type = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded + 2 ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded - ps_dec -> ps_cur_slice -> u1_field_pic_flag ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } { if ( ( 0 == ps_dec -> u4_num_reorder_frames_at_init ) && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 1 ; } } ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; if ( ps_dec -> u4_output_present && ( ps_dec -> u4_fmt_conv_cur_row < ps_dec -> s_disp_frame_info . u4_y_ht ) ) { ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht - ps_dec -> u4_fmt_conv_cur_row ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; } if ( ps_dec -> i4_decode_header == 1 && ( ps_dec -> i4_header_decoded & 1 ) == 1 ) { ps_dec_op -> u4_progressive_frame_flag = 1 ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { if ( ( 0 == ps_dec -> ps_sps -> u1_frame_mbs_only_flag ) && ( 0 == ps_dec -> ps_sps -> u1_mb_aff_flag ) ) ps_dec_op -> u4_progressive_frame_flag = 0 ; } } if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } if ( ps_dec -> u4_pic_buf_got == 1 ) { if ( 1 == ps_dec -> u1_last_pic_not_decoded ) { ret = ih264d_end_of_pic_dispbuf_mgr ( ps_dec ) ; if ( ret != OK ) return ret ; ret = ih264d_end_of_pic ( ps_dec ) ; if ( ret != OK ) return ret ; } else { ret = ih264d_end_of_pic ( ps_dec ) ; if ( ret != OK ) return ret ; } } DATA_SYNC ( ) ; H264_DEC_DEBUG_PRINT ( \"The<S2SV_blank>num<S2SV_blank>bytes<S2SV_blank>consumed:<S2SV_blank>%d\\\\n\" , ps_dec_op -> u4_num_bytes_consumed ) ; return api_ret_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> u4_first_slice_in_pic = 1 <S2SV_ModEnd> ; ps_dec ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8896\n\n```\nCWE-189 MagickExport const char * GetMagickFeatures ( void ) { return \"DPC\" <S2SV_StartBug> # if defined ( MAGICKCORE_BUILD_MODULES ) || defined ( _DLL ) <S2SV_EndBug> \"<S2SV_blank>Modules\" # endif # if defined ( MAGICKCORE_HDRI_SUPPORT ) <S2SV_StartBug> \"<S2SV_blank>HDRI\" <S2SV_EndBug> # endif # if defined ( MAGICKCORE_OPENCL_SUPPORT ) \"<S2SV_blank>OpenCL\" # endif # if defined ( MAGICKCORE_OPENMP_SUPPORT ) \"<S2SV_blank>OpenMP\" # endif <S2SV_StartBug> ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if defined ( MAGICKCORE_WINDOWS_SUPPORT ) && defined ( _DEBUG ) \"<S2SV_blank>Debug\" # endif # if defined ( MAGICKCORE_CIPHER_SUPPORT ) \"<S2SV_blank>Cipher\" <S2SV_ModEnd> # endif # <S2SV_ModStart> MAGICKCORE_HDRI_SUPPORT ) \"<S2SV_blank>HDRI\" # endif # if defined ( MAGICKCORE_BUILD_MODULES ) || defined ( _DLL ) \"<S2SV_blank>Modules\" <S2SV_ModStart> \"<S2SV_blank>OpenMP\" # endif # if defined ( ZERO_CONFIGURATION_SUPPORT ) \"<S2SV_blank>Zero-configuration\" # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5239\n\n```\nCWE-835 static int protocol_client_msg ( VncState * vs , uint8_t * data , size_t len ) { int i ; uint16_t limit ; VncDisplay * vd = vs -> vd ; if ( data [ 0 ] > 3 ) { update_displaychangelistener ( & vd -> dcl , VNC_REFRESH_INTERVAL_BASE ) ; } switch ( data [ 0 ] ) { case VNC_MSG_CLIENT_SET_PIXEL_FORMAT : if ( len == 1 ) return 20 ; set_pixel_format ( vs , read_u8 ( data , 4 ) , read_u8 ( data , 5 ) , read_u8 ( data , 6 ) , read_u8 ( data , 7 ) , read_u16 ( data , 8 ) , read_u16 ( data , 10 ) , read_u16 ( data , 12 ) , read_u8 ( data , 14 ) , read_u8 ( data , 15 ) , read_u8 ( data , 16 ) ) ; break ; case VNC_MSG_CLIENT_SET_ENCODINGS : if ( len == 1 ) return 4 ; if ( len == 4 ) { limit = read_u16 ( data , 2 ) ; if ( limit > 0 ) return 4 + ( limit * 4 ) ; } else limit = read_u16 ( data , 2 ) ; for ( i = 0 ; i < limit ; i ++ ) { int32_t val = read_s32 ( data , 4 + ( i * 4 ) ) ; memcpy ( data + 4 + ( i * 4 ) , & val , sizeof ( val ) ) ; } set_encodings ( vs , ( int32_t * ) ( data + 4 ) , limit ) ; break ; case VNC_MSG_CLIENT_FRAMEBUFFER_UPDATE_REQUEST : if ( len == 1 ) return 10 ; framebuffer_update_request ( vs , read_u8 ( data , 1 ) , read_u16 ( data , 2 ) , read_u16 ( data , 4 ) , read_u16 ( data , 6 ) , read_u16 ( data , 8 ) ) ; break ; case VNC_MSG_CLIENT_KEY_EVENT : if ( len == 1 ) return 8 ; key_event ( vs , read_u8 ( data , 1 ) , read_u32 ( data , 4 ) ) ; break ; case VNC_MSG_CLIENT_POINTER_EVENT : if ( len == 1 ) return 6 ; pointer_event ( vs , read_u8 ( data , 1 ) , read_u16 ( data , 2 ) , read_u16 ( data , 4 ) ) ; break ; case VNC_MSG_CLIENT_CUT_TEXT : <S2SV_StartBug> if ( len == 1 ) <S2SV_EndBug> <S2SV_StartBug> return 8 ; <S2SV_EndBug> if ( len == 8 ) { <S2SV_StartBug> uint32_t dlen = read_u32 ( data , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dlen > 0 ) <S2SV_EndBug> <S2SV_StartBug> return 8 + dlen ; <S2SV_EndBug> } client_cut_text ( vs , read_u32 ( data , 4 ) , data + 8 ) ; break ; case VNC_MSG_CLIENT_QEMU : if ( len == 1 ) return 2 ; switch ( read_u8 ( data , 1 ) ) { case VNC_MSG_CLIENT_QEMU_EXT_KEY_EVENT : if ( len == 2 ) return 12 ; ext_key_event ( vs , read_u16 ( data , 2 ) , read_u32 ( data , 4 ) , read_u32 ( data , 8 ) ) ; break ; case VNC_MSG_CLIENT_QEMU_AUDIO : if ( len == 2 ) return 4 ; switch ( read_u16 ( data , 2 ) ) { case VNC_MSG_CLIENT_QEMU_AUDIO_ENABLE : audio_add ( vs ) ; break ; case VNC_MSG_CLIENT_QEMU_AUDIO_DISABLE : audio_del ( vs ) ; break ; case VNC_MSG_CLIENT_QEMU_AUDIO_SET_FORMAT : if ( len == 4 ) return 10 ; switch ( read_u8 ( data , 4 ) ) { case 0 : vs -> as . fmt = AUD_FMT_U8 ; break ; case 1 : vs -> as . fmt = AUD_FMT_S8 ; break ; case 2 : vs -> as . fmt = AUD_FMT_U16 ; break ; case 3 : vs -> as . fmt = AUD_FMT_S16 ; break ; case 4 : vs -> as . fmt = AUD_FMT_U32 ; break ; case 5 : vs -> as . fmt = AUD_FMT_S32 ; break ; default : printf ( \"Invalid<S2SV_blank>audio<S2SV_blank>format<S2SV_blank>%d\\\\n\" , read_u8 ( data , 4 ) ) ; vnc_client_error ( vs ) ; break ; } vs -> as . nchannels = read_u8 ( data , 5 ) ; if ( vs -> as . nchannels != 1 && vs -> as . nchannels != 2 ) { printf ( \"Invalid<S2SV_blank>audio<S2SV_blank>channel<S2SV_blank>coount<S2SV_blank>%d\\\\n\" , read_u8 ( data , 5 ) ) ; vnc_client_error ( vs ) ; break ; } vs -> as . freq = read_u32 ( data , 6 ) ; break ; default : printf ( \"Invalid<S2SV_blank>audio<S2SV_blank>message<S2SV_blank>%d\\\\n\" , read_u8 ( data , 4 ) ) ; vnc_client_error ( vs ) ; break ; } break ; default : printf ( \"Msg:<S2SV_blank>%d\\\\n\" , read_u16 ( data , 0 ) ) ; vnc_client_error ( vs ) ; break ; } break ; default : printf ( \"Msg:<S2SV_blank>%d\\\\n\" , data [ 0 ] ) ; vnc_client_error ( vs ) ; break ; } vnc_read_when ( vs , protocol_client_msg , 1 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 1 ) { <S2SV_ModStart> return 8 ; } <S2SV_ModStart> 4 ) ; if ( dlen > ( 1 << 20 ) ) { error_report ( \"vnc:<S2SV_blank>client_cut_text<S2SV_blank>msg<S2SV_blank>payload<S2SV_blank>has<S2SV_blank>%u<S2SV_blank>bytes\" \"<S2SV_blank>which<S2SV_blank>exceeds<S2SV_blank>our<S2SV_blank>limit<S2SV_blank>of<S2SV_blank>1MB.\" , dlen ) ; vnc_client_error ( vs ) ; break ; } <S2SV_ModStart> > 0 ) { <S2SV_ModStart> + dlen ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 static int cg_getattr ( const char * path , struct stat * sb ) { struct timespec now ; struct fuse_context * fc = fuse_get_context ( ) ; char * cgdir = NULL ; char * fpath = NULL , * path1 , * path2 ; struct cgfs_files * k = NULL ; const char * cgroup ; const char * controller = NULL ; int ret = - ENOENT ; if ( ! fc ) return - EIO ; memset ( sb , 0 , sizeof ( struct stat ) ) ; if ( clock_gettime ( CLOCK_REALTIME , & now ) < 0 ) return - EINVAL ; sb -> st_uid = sb -> st_gid = 0 ; sb -> st_atim = sb -> st_mtim = sb -> st_ctim = now ; sb -> st_size = 0 ; if ( strcmp ( path , \"/cgroup\" ) == 0 ) { sb -> st_mode = S_IFDIR | 00755 ; sb -> st_nlink = 2 ; return 0 ; } controller = pick_controller_from_path ( fc , path ) ; if ( ! controller ) return - EIO ; cgroup = find_cgroup_in_path ( path ) ; if ( ! cgroup ) { sb -> st_mode = S_IFDIR | 00755 ; sb -> st_nlink = 2 ; return 0 ; } get_cgdir_and_path ( cgroup , & cgdir , & fpath ) ; if ( ! fpath ) { path1 = \"/\" ; path2 = cgdir ; } else { path1 = cgdir ; path2 = fpath ; } if ( is_child_cgroup ( controller , path1 , path2 ) ) { <S2SV_StartBug> if ( ! caller_is_in_ancestor ( fc -> pid , controller , cgroup , NULL ) ) { <S2SV_EndBug> sb -> st_mode = S_IFDIR | 00555 ; sb -> st_nlink = 2 ; ret = 0 ; goto out ; } if ( ! fc_may_access ( fc , controller , cgroup , NULL , O_RDONLY ) ) { ret = - EACCES ; goto out ; } sb -> st_mode = S_IFDIR | 00755 ; k = cgfs_get_key ( controller , cgroup , \"tasks\" ) ; if ( ! k ) { sb -> st_uid = sb -> st_gid = 0 ; } else { sb -> st_uid = k -> uid ; sb -> st_gid = k -> gid ; } free_key ( k ) ; sb -> st_nlink = 2 ; ret = 0 ; goto out ; } if ( ( k = cgfs_get_key ( controller , path1 , path2 ) ) != NULL ) { sb -> st_mode = S_IFREG | k -> mode ; sb -> st_nlink = 1 ; sb -> st_uid = k -> uid ; sb -> st_gid = k -> gid ; sb -> st_size = 0 ; free_key ( k ) ; if ( ! caller_is_in_ancestor ( fc -> pid , controller , path1 , NULL ) ) { ret = - ENOENT ; goto out ; } if ( ! fc_may_access ( fc , controller , path1 , path2 , O_RDONLY ) ) { ret = - EACCES ; goto out ; } ret = 0 ; } out : free ( cgdir ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! caller_may_see_dir ( fc -> pid , controller , cgroup ) ) { ret = - ENOENT ; goto out ; } if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13032\n\n```\nCWE-125 static void print_attr_string ( netdissect_options * ndo , register const u_char * data , u_int length , u_short attr_code ) { register u_int i ; ND_TCHECK2 ( data [ 0 ] , length ) ; switch ( attr_code ) { case TUNNEL_PASS : if ( length < 3 ) <S2SV_StartBug> { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } if ( * data && ( * data <= 0x1F ) ) ND_PRINT ( ( ndo , \"Tag[%u]<S2SV_blank>\" , * data ) ) ; else ND_PRINT ( ( ndo , \"Tag[Unused]<S2SV_blank>\" ) ) ; data ++ ; length -- ; ND_PRINT ( ( ndo , \"Salt<S2SV_blank>%u<S2SV_blank>\" , EXTRACT_16BITS ( data ) ) ) ; data += 2 ; length -= 2 ; break ; case TUNNEL_CLIENT_END : case TUNNEL_SERVER_END : case TUNNEL_PRIV_GROUP : case TUNNEL_ASSIGN_ID : case TUNNEL_CLIENT_AUTH : case TUNNEL_SERVER_AUTH : if ( * data <= 0x1F ) { if ( length < 1 ) <S2SV_StartBug> { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } if ( * data ) ND_PRINT ( ( ndo , \"Tag[%u]<S2SV_blank>\" , * data ) ) ; else ND_PRINT ( ( ndo , \"Tag[Unused]<S2SV_blank>\" ) ) ; data ++ ; length -- ; } break ; <S2SV_StartBug> case EGRESS_VLAN_NAME : <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>(0x%02x)<S2SV_blank>\" , tok2str ( rfc4675_tagged , \"Unknown<S2SV_blank>tag\" , * data ) , * data ) ) ; data ++ ; length -- ; break ; } <S2SV_StartBug> for ( i = 0 ; * data && i < length ; i ++ , data ++ ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"%c\" , ( * data < 32 || * data > 126 ) ? '.' : * data ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 3 ) goto trunc ; <S2SV_ModEnd> if ( * <S2SV_ModStart> < 1 ) goto trunc ; if ( * data ) ND_PRINT ( ( ndo , \"Tag[%u]<S2SV_blank>\" , * data ) ) ; else ND_PRINT ( ( ndo , \"Tag[Unused]<S2SV_blank>\" ) ) ; data ++ ; length -- ; } <S2SV_ModEnd> break ; case <S2SV_ModStart> case EGRESS_VLAN_NAME : if ( length < 1 ) goto trunc ; <S2SV_ModStart> = 0 ; i < length && * data <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10129\n\n```\nCWE-476 static int parse_report ( transport_smart * transport , git_push * push ) { git_pkt * pkt = NULL ; const char * line_end = NULL ; gitno_buffer * buf = & transport -> buffer ; int error , recvd ; git_buf data_pkt_buf = GIT_BUF_INIT ; for ( ; ; ) { if ( buf -> offset > 0 ) error = git_pkt_parse_line ( & pkt , buf -> data , & line_end , buf -> offset ) ; else error = GIT_EBUFS ; if ( error < 0 && error != GIT_EBUFS ) { error = - 1 ; goto done ; } if ( error == GIT_EBUFS ) { if ( ( recvd = gitno_recv ( buf ) ) < 0 ) { error = recvd ; goto done ; } if ( recvd == 0 ) { giterr_set ( GITERR_NET , \"early<S2SV_blank>EOF\" ) ; error = GIT_EEOF ; goto done ; } continue ; } gitno_consume ( buf , line_end ) ; <S2SV_StartBug> error = 0 ; <S2SV_EndBug> if ( pkt == NULL ) continue ; switch ( pkt -> type ) { case GIT_PKT_DATA : error = add_push_report_sideband_pkt ( push , ( git_pkt_data * ) pkt , & data_pkt_buf ) ; break ; case GIT_PKT_ERR : giterr_set ( GITERR_NET , \"report-status:<S2SV_blank>Error<S2SV_blank>reported:<S2SV_blank>%s\" , ( ( git_pkt_err * ) pkt ) -> error ) ; error = - 1 ; break ; case GIT_PKT_PROGRESS : if ( transport -> progress_cb ) { git_pkt_progress * p = ( git_pkt_progress * ) pkt ; error = transport -> progress_cb ( p -> data , p -> len , transport -> message_cb_payload ) ; } break ; default : error = add_push_report_pkt ( push , pkt ) ; break ; } git_pkt_free ( pkt ) ; if ( error == GIT_ITEROVER ) { error = 0 ; if ( data_pkt_buf . size > 0 ) { giterr_set ( GITERR_NET , \"Incomplete<S2SV_blank>pack<S2SV_blank>data<S2SV_blank>pkt-line\" ) ; error = GIT_ERROR ; } goto done ; } if ( error < 0 ) { goto done ; } } done : git_buf_free ( & data_pkt_buf ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error = 0 <S2SV_ModEnd> ; switch (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0204\n\n```\nCWE-310 int ssl3_accept ( SSL * s ) { BUF_MEM * buf ; unsigned long alg_k , Time = ( unsigned long ) time ( NULL ) ; void ( * cb ) ( const SSL * ssl , int type , int val ) = NULL ; int ret = - 1 ; int new_state , state , skip = 0 ; RAND_add ( & Time , sizeof ( Time ) , 0 ) ; ERR_clear_error ( ) ; clear_sys_error ( ) ; if ( s -> info_callback != NULL ) cb = s -> info_callback ; else if ( s -> ctx -> info_callback != NULL ) cb = s -> ctx -> info_callback ; s -> in_handshake ++ ; if ( ! SSL_in_init ( s ) || SSL_in_before ( s ) ) SSL_clear ( s ) ; if ( s -> cert == NULL ) { SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_NO_CERTIFICATE_SET ) ; return ( - 1 ) ; } # ifndef OPENSSL_NO_HEARTBEATS if ( s -> tlsext_hb_pending ) { s -> tlsext_hb_pending = 0 ; s -> tlsext_hb_seq ++ ; } # endif for ( ; ; ) { state = s -> state ; switch ( s -> state ) { case SSL_ST_RENEGOTIATE : s -> renegotiate = 1 ; case SSL_ST_BEFORE : case SSL_ST_ACCEPT : case SSL_ST_BEFORE | SSL_ST_ACCEPT : case SSL_ST_OK | SSL_ST_ACCEPT : s -> server = 1 ; if ( cb != NULL ) cb ( s , SSL_CB_HANDSHAKE_START , 1 ) ; if ( ( s -> version >> 8 ) != 3 ) { SSLerr ( SSL_F_SSL3_ACCEPT , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } if ( ! ssl_security ( s , SSL_SECOP_VERSION , 0 , s -> version , NULL ) ) { SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_VERSION_TOO_LOW ) ; return - 1 ; } s -> type = SSL_ST_ACCEPT ; if ( s -> init_buf == NULL ) { if ( ( buf = BUF_MEM_new ( ) ) == NULL ) { ret = - 1 ; goto end ; } if ( ! BUF_MEM_grow ( buf , SSL3_RT_MAX_PLAIN_LENGTH ) ) { BUF_MEM_free ( buf ) ; ret = - 1 ; goto end ; } s -> init_buf = buf ; } if ( ! ssl3_setup_buffers ( s ) ) { ret = - 1 ; goto end ; } s -> init_num = 0 ; s -> s3 -> flags &= ~ TLS1_FLAGS_SKIP_CERT_VERIFY ; s -> s3 -> flags &= ~ SSL3_FLAGS_CCS_OK ; s -> s3 -> change_cipher_spec = 0 ; if ( s -> state != SSL_ST_RENEGOTIATE ) { if ( ! ssl_init_wbio_buffer ( s , 1 ) ) { ret = - 1 ; goto end ; } ssl3_init_finished_mac ( s ) ; s -> state = SSL3_ST_SR_CLNT_HELLO_A ; s -> ctx -> stats . sess_accept ++ ; } else if ( ! s -> s3 -> send_connection_binding && ! ( s -> options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION ) ) { SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED ) ; ssl3_send_alert ( s , SSL3_AL_FATAL , SSL_AD_HANDSHAKE_FAILURE ) ; ret = - 1 ; goto end ; } else { s -> ctx -> stats . sess_accept_renegotiate ++ ; s -> state = SSL3_ST_SW_HELLO_REQ_A ; } break ; case SSL3_ST_SW_HELLO_REQ_A : case SSL3_ST_SW_HELLO_REQ_B : s -> shutdown = 0 ; ret = ssl3_send_hello_request ( s ) ; if ( ret <= 0 ) goto end ; s -> s3 -> tmp . next_state = SSL3_ST_SW_HELLO_REQ_C ; s -> state = SSL3_ST_SW_FLUSH ; s -> init_num = 0 ; ssl3_init_finished_mac ( s ) ; break ; case SSL3_ST_SW_HELLO_REQ_C : s -> state = SSL_ST_OK ; break ; case SSL3_ST_SR_CLNT_HELLO_A : case SSL3_ST_SR_CLNT_HELLO_B : case SSL3_ST_SR_CLNT_HELLO_C : ret = ssl3_get_client_hello ( s ) ; if ( ret <= 0 ) goto end ; # ifndef OPENSSL_NO_SRP s -> state = SSL3_ST_SR_CLNT_HELLO_D ; case SSL3_ST_SR_CLNT_HELLO_D : { int al ; if ( ( ret = ssl_check_srp_ext_ClientHello ( s , & al ) ) < 0 ) { s -> rwstate = SSL_X509_LOOKUP ; goto end ; } if ( ret != SSL_ERROR_NONE ) { ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; if ( al != TLS1_AD_UNKNOWN_PSK_IDENTITY ) SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_CLIENTHELLO_TLSEXT ) ; ret = SSL_TLSEXT_ERR_ALERT_FATAL ; ret = - 1 ; goto end ; } } # endif s -> renegotiate = 2 ; s -> state = SSL3_ST_SW_SRVR_HELLO_A ; s -> init_num = 0 ; break ; case SSL3_ST_SW_SRVR_HELLO_A : case SSL3_ST_SW_SRVR_HELLO_B : ret = ssl3_send_server_hello ( s ) ; if ( ret <= 0 ) goto end ; # ifndef OPENSSL_NO_TLSEXT if ( s -> hit ) { if ( s -> tlsext_ticket_expected ) s -> state = SSL3_ST_SW_SESSION_TICKET_A ; else s -> state = SSL3_ST_SW_CHANGE_A ; } # else if ( s -> hit ) s -> state = SSL3_ST_SW_CHANGE_A ; # endif else s -> state = SSL3_ST_SW_CERT_A ; s -> init_num = 0 ; break ; case SSL3_ST_SW_CERT_A : case SSL3_ST_SW_CERT_B : if ( ! ( s -> s3 -> tmp . new_cipher -> algorithm_auth & ( SSL_aNULL | SSL_aKRB5 | SSL_aSRP ) ) && ! ( s -> s3 -> tmp . new_cipher -> algorithm_mkey & SSL_kPSK ) ) { ret = ssl3_send_server_certificate ( s ) ; if ( ret <= 0 ) goto end ; # ifndef OPENSSL_NO_TLSEXT if ( s -> tlsext_status_expected ) s -> state = SSL3_ST_SW_CERT_STATUS_A ; else s -> state = SSL3_ST_SW_KEY_EXCH_A ; } else { skip = 1 ; s -> state = SSL3_ST_SW_KEY_EXCH_A ; } # else } else skip = 1 ; s -> state = SSL3_ST_SW_KEY_EXCH_A ; # endif s -> init_num = 0 ; break ; case SSL3_ST_SW_KEY_EXCH_A : case SSL3_ST_SW_KEY_EXCH_B : alg_k = s -> s3 -> tmp . new_cipher -> algorithm_mkey ; <S2SV_StartBug> if ( ( s -> options & SSL_OP_EPHEMERAL_RSA ) <S2SV_EndBug> # ifndef OPENSSL_NO_KRB5 && ! ( alg_k & SSL_kKRB5 ) # endif ) <S2SV_StartBug> s -> s3 -> tmp . use_rsa_tmp = 1 ; <S2SV_EndBug> else s -> s3 -> tmp . use_rsa_tmp = 0 ; if ( s -> s3 -> tmp . use_rsa_tmp # ifndef OPENSSL_NO_PSK || ( ( alg_k & SSL_kPSK ) && s -> ctx -> psk_identity_hint ) # endif # ifndef OPENSSL_NO_SRP || ( alg_k & SSL_kSRP ) # endif || ( alg_k & SSL_kDHE ) || ( alg_k & SSL_kECDHE ) || ( ( alg_k & SSL_kRSA ) && ( s -> cert -> pkeys [ SSL_PKEY_RSA_ENC ] . privatekey == NULL || ( SSL_C_IS_EXPORT ( s -> s3 -> tmp . new_cipher ) && EVP_PKEY_size ( s -> cert -> pkeys [ SSL_PKEY_RSA_ENC ] . privatekey ) * 8 > SSL_C_EXPORT_PKEYLENGTH ( s -> s3 -> tmp . new_cipher ) ) ) ) ) { ret = ssl3_send_server_key_exchange ( s ) ; if ( ret <= 0 ) goto end ; } else skip = 1 ; s -> state = SSL3_ST_SW_CERT_REQ_A ; s -> init_num = 0 ; break ; case SSL3_ST_SW_CERT_REQ_A : case SSL3_ST_SW_CERT_REQ_B : if ( ! ( s -> verify_mode & SSL_VERIFY_PEER ) || ( ( s -> session -> peer != NULL ) && ( s -> verify_mode & SSL_VERIFY_CLIENT_ONCE ) ) || ( ( s -> s3 -> tmp . new_cipher -> algorithm_auth & SSL_aNULL ) && ! ( s -> verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT ) ) || ( s -> s3 -> tmp . new_cipher -> algorithm_auth & SSL_aKRB5 ) || ( s -> s3 -> tmp . new_cipher -> algorithm_auth & SSL_aSRP ) || ( s -> s3 -> tmp . new_cipher -> algorithm_mkey & SSL_kPSK ) ) { skip = 1 ; s -> s3 -> tmp . cert_request = 0 ; s -> state = SSL3_ST_SW_SRVR_DONE_A ; if ( s -> s3 -> handshake_buffer ) if ( ! ssl3_digest_cached_records ( s ) ) return - 1 ; } else { s -> s3 -> tmp . cert_request = 1 ; ret = ssl3_send_certificate_request ( s ) ; if ( ret <= 0 ) goto end ; # ifndef NETSCAPE_HANG_BUG s -> state = SSL3_ST_SW_SRVR_DONE_A ; # else s -> state = SSL3_ST_SW_FLUSH ; s -> s3 -> tmp . next_state = SSL3_ST_SR_CERT_A ; # endif s -> init_num = 0 ; } break ; case SSL3_ST_SW_SRVR_DONE_A : case SSL3_ST_SW_SRVR_DONE_B : ret = ssl3_send_server_done ( s ) ; if ( ret <= 0 ) goto end ; s -> s3 -> tmp . next_state = SSL3_ST_SR_CERT_A ; s -> state = SSL3_ST_SW_FLUSH ; s -> init_num = 0 ; break ; case SSL3_ST_SW_FLUSH : s -> rwstate = SSL_WRITING ; if ( BIO_flush ( s -> wbio ) <= 0 ) { ret = - 1 ; goto end ; } s -> rwstate = SSL_NOTHING ; s -> state = s -> s3 -> tmp . next_state ; break ; case SSL3_ST_SR_CERT_A : case SSL3_ST_SR_CERT_B : if ( s -> s3 -> tmp . cert_request ) { ret = ssl3_get_client_certificate ( s ) ; if ( ret <= 0 ) goto end ; } s -> init_num = 0 ; s -> state = SSL3_ST_SR_KEY_EXCH_A ; break ; case SSL3_ST_SR_KEY_EXCH_A : case SSL3_ST_SR_KEY_EXCH_B : ret = ssl3_get_client_key_exchange ( s ) ; if ( ret <= 0 ) goto end ; if ( ret == 2 ) { # if defined ( OPENSSL_NO_TLSEXT ) || defined ( OPENSSL_NO_NEXTPROTONEG ) s -> state = SSL3_ST_SR_FINISHED_A ; # else if ( s -> s3 -> next_proto_neg_seen ) s -> state = SSL3_ST_SR_NEXT_PROTO_A ; else s -> state = SSL3_ST_SR_FINISHED_A ; # endif s -> init_num = 0 ; } else if ( SSL_USE_SIGALGS ( s ) ) { s -> state = SSL3_ST_SR_CERT_VRFY_A ; s -> init_num = 0 ; if ( ! s -> session -> peer ) break ; if ( ! s -> s3 -> handshake_buffer ) { SSLerr ( SSL_F_SSL3_ACCEPT , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } s -> s3 -> flags |= TLS1_FLAGS_KEEP_HANDSHAKE ; if ( ! ssl3_digest_cached_records ( s ) ) return - 1 ; } else { int offset = 0 ; int dgst_num ; s -> state = SSL3_ST_SR_CERT_VRFY_A ; s -> init_num = 0 ; if ( s -> s3 -> handshake_buffer ) if ( ! ssl3_digest_cached_records ( s ) ) return - 1 ; for ( dgst_num = 0 ; dgst_num < SSL_MAX_DIGEST ; dgst_num ++ ) if ( s -> s3 -> handshake_dgst [ dgst_num ] ) { int dgst_size ; s -> method -> ssl3_enc -> cert_verify_mac ( s , EVP_MD_CTX_type ( s -> s3 -> handshake_dgst [ dgst_num ] ) , & ( s -> s3 -> tmp . cert_verify_md [ offset ] ) ) ; dgst_size = EVP_MD_CTX_size ( s -> s3 -> handshake_dgst [ dgst_num ] ) ; if ( dgst_size < 0 ) { ret = - 1 ; goto end ; } offset += dgst_size ; } } break ; case SSL3_ST_SR_CERT_VRFY_A : case SSL3_ST_SR_CERT_VRFY_B : if ( ! s -> s3 -> change_cipher_spec ) s -> s3 -> flags |= SSL3_FLAGS_CCS_OK ; ret = ssl3_get_cert_verify ( s ) ; if ( ret <= 0 ) goto end ; # if defined ( OPENSSL_NO_TLSEXT ) || defined ( OPENSSL_NO_NEXTPROTONEG ) s -> state = SSL3_ST_SR_FINISHED_A ; # else if ( s -> s3 -> next_proto_neg_seen ) s -> state = SSL3_ST_SR_NEXT_PROTO_A ; else s -> state = SSL3_ST_SR_FINISHED_A ; # endif s -> init_num = 0 ; break ; # if ! defined ( OPENSSL_NO_TLSEXT ) && ! defined ( OPENSSL_NO_NEXTPROTONEG ) case SSL3_ST_SR_NEXT_PROTO_A : case SSL3_ST_SR_NEXT_PROTO_B : if ( ! s -> s3 -> change_cipher_spec ) s -> s3 -> flags |= SSL3_FLAGS_CCS_OK ; ret = ssl3_get_next_proto ( s ) ; if ( ret <= 0 ) goto end ; s -> init_num = 0 ; s -> state = SSL3_ST_SR_FINISHED_A ; break ; # endif case SSL3_ST_SR_FINISHED_A : case SSL3_ST_SR_FINISHED_B : if ( ! s -> s3 -> change_cipher_spec ) s -> s3 -> flags |= SSL3_FLAGS_CCS_OK ; ret = ssl3_get_finished ( s , SSL3_ST_SR_FINISHED_A , SSL3_ST_SR_FINISHED_B ) ; if ( ret <= 0 ) goto end ; if ( s -> hit ) s -> state = SSL_ST_OK ; # ifndef OPENSSL_NO_TLSEXT else if ( s -> tlsext_ticket_expected ) s -> state = SSL3_ST_SW_SESSION_TICKET_A ; # endif else s -> state = SSL3_ST_SW_CHANGE_A ; s -> init_num = 0 ; break ; # ifndef OPENSSL_NO_TLSEXT case SSL3_ST_SW_SESSION_TICKET_A : case SSL3_ST_SW_SESSION_TICKET_B : ret = ssl3_send_newsession_ticket ( s ) ; if ( ret <= 0 ) goto end ; s -> state = SSL3_ST_SW_CHANGE_A ; s -> init_num = 0 ; break ; case SSL3_ST_SW_CERT_STATUS_A : case SSL3_ST_SW_CERT_STATUS_B : ret = ssl3_send_cert_status ( s ) ; if ( ret <= 0 ) goto end ; s -> state = SSL3_ST_SW_KEY_EXCH_A ; s -> init_num = 0 ; break ; # endif case SSL3_ST_SW_CHANGE_A : case SSL3_ST_SW_CHANGE_B : s -> session -> cipher = s -> s3 -> tmp . new_cipher ; if ( ! s -> method -> ssl3_enc -> setup_key_block ( s ) ) { ret = - 1 ; goto end ; } ret = ssl3_send_change_cipher_spec ( s , SSL3_ST_SW_CHANGE_A , SSL3_ST_SW_CHANGE_B ) ; if ( ret <= 0 ) goto end ; s -> state = SSL3_ST_SW_FINISHED_A ; s -> init_num = 0 ; if ( ! s -> method -> ssl3_enc -> change_cipher_state ( s , SSL3_CHANGE_CIPHER_SERVER_WRITE ) ) { ret = - 1 ; goto end ; } break ; case SSL3_ST_SW_FINISHED_A : case SSL3_ST_SW_FINISHED_B : ret = ssl3_send_finished ( s , SSL3_ST_SW_FINISHED_A , SSL3_ST_SW_FINISHED_B , s -> method -> ssl3_enc -> server_finished_label , s -> method -> ssl3_enc -> server_finished_label_len ) ; if ( ret <= 0 ) goto end ; s -> state = SSL3_ST_SW_FLUSH ; if ( s -> hit ) { # if defined ( OPENSSL_NO_TLSEXT ) || defined ( OPENSSL_NO_NEXTPROTONEG ) s -> s3 -> tmp . next_state = SSL3_ST_SR_FINISHED_A ; # else if ( s -> s3 -> next_proto_neg_seen ) { s -> s3 -> tmp . next_state = SSL3_ST_SR_NEXT_PROTO_A ; } else s -> s3 -> tmp . next_state = SSL3_ST_SR_FINISHED_A ; # endif } else s -> s3 -> tmp . next_state = SSL_ST_OK ; s -> init_num = 0 ; break ; case SSL_ST_OK : ssl3_cleanup_key_block ( s ) ; BUF_MEM_free ( s -> init_buf ) ; s -> init_buf = NULL ; ssl_free_wbio_buffer ( s ) ; s -> init_num = 0 ; if ( s -> renegotiate == 2 ) { s -> renegotiate = 0 ; s -> new_session = 0 ; ssl_update_cache ( s , SSL_SESS_CACHE_SERVER ) ; s -> ctx -> stats . sess_accept_good ++ ; s -> handshake_func = ssl3_accept ; if ( cb != NULL ) cb ( s , SSL_CB_HANDSHAKE_DONE , 1 ) ; } ret = 1 ; goto end ; default : SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_UNKNOWN_STATE ) ; ret = - 1 ; goto end ; } if ( ! s -> s3 -> tmp . reuse_message && ! skip ) { if ( s -> debug ) { if ( ( ret = BIO_flush ( s -> wbio ) ) <= 0 ) goto end ; } if ( ( cb != NULL ) && ( s -> state != state ) ) { new_state = s -> state ; s -> state = state ; cb ( s , SSL_CB_ACCEPT_LOOP , 1 ) ; s -> state = new_state ; } } skip = 0 ; } end : s -> in_handshake -- ; if ( cb != NULL ) cb ( s , SSL_CB_ACCEPT_EXIT , ret ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> algorithm_mkey ; <S2SV_ModEnd> s -> s3 <S2SV_ModStart> . use_rsa_tmp = 0 ; if ( <S2SV_ModEnd> # ifndef OPENSSL_NO_PSK\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1080\n\n```\nCWE-20 static int do_replace ( struct net * net , const void __user * user , unsigned int len ) { int ret , countersize ; struct ebt_table_info * newinfo ; struct ebt_replace tmp ; if ( copy_from_user ( & tmp , user , sizeof ( tmp ) ) != 0 ) return - EFAULT ; if ( len != sizeof ( tmp ) + tmp . entries_size ) { BUGPRINT ( \"Wrong<S2SV_blank>len<S2SV_blank>argument\\\\n\" ) ; return - EINVAL ; } if ( tmp . entries_size == 0 ) { BUGPRINT ( \"Entries_size<S2SV_blank>never<S2SV_blank>zero\\\\n\" ) ; return - EINVAL ; } if ( tmp . nentries >= ( ( INT_MAX - sizeof ( struct ebt_table_info ) ) / NR_CPUS - SMP_CACHE_BYTES ) / sizeof ( struct ebt_counter ) ) return - ENOMEM ; if ( tmp . num_counters >= INT_MAX / sizeof ( struct ebt_counter ) ) return - ENOMEM ; <S2SV_StartBug> countersize = COUNTER_OFFSET ( tmp . nentries ) * nr_cpu_ids ; <S2SV_EndBug> newinfo = vmalloc ( sizeof ( * newinfo ) + countersize ) ; if ( ! newinfo ) return - ENOMEM ; if ( countersize ) memset ( newinfo -> counters , 0 , countersize ) ; newinfo -> entries = vmalloc ( tmp . entries_size ) ; if ( ! newinfo -> entries ) { ret = - ENOMEM ; goto free_newinfo ; } if ( copy_from_user ( newinfo -> entries , tmp . entries , tmp . entries_size ) != 0 ) { BUGPRINT ( \"Couldn\\'t<S2SV_blank>copy<S2SV_blank>entries<S2SV_blank>from<S2SV_blank>userspace\\\\n\" ) ; ret = - EFAULT ; goto free_entries ; } ret = do_replace_finish ( net , & tmp , newinfo ) ; if ( ret == 0 ) return ret ; free_entries : vfree ( newinfo -> entries ) ; free_newinfo : vfree ( newinfo ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOMEM ; tmp . name [ sizeof ( tmp . name ) - 1 ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13045\n\n```\nCWE-125 void vqp_print ( netdissect_options * ndo , register const u_char * pptr , register u_int len ) { const struct vqp_common_header_t * vqp_common_header ; const struct vqp_obj_tlv_t * vqp_obj_tlv ; const u_char * tptr ; uint16_t vqp_obj_len ; uint32_t vqp_obj_type ; <S2SV_StartBug> int tlen ; <S2SV_EndBug> uint8_t nitems ; tptr = pptr ; tlen = len ; vqp_common_header = ( const struct vqp_common_header_t * ) pptr ; <S2SV_StartBug> ND_TCHECK ( * vqp_common_header ) ; <S2SV_EndBug> if ( VQP_EXTRACT_VERSION ( vqp_common_header -> version ) != VQP_VERSION ) { ND_PRINT ( ( ndo , \"VQP<S2SV_blank>version<S2SV_blank>%u<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , VQP_EXTRACT_VERSION ( vqp_common_header -> version ) ) ) ; return ; } if ( ndo -> ndo_vflag < 1 ) { ND_PRINT ( ( ndo , \"VQPv%u<S2SV_blank>%s<S2SV_blank>Message,<S2SV_blank>error-code<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , VQP_EXTRACT_VERSION ( vqp_common_header -> version ) , tok2str ( vqp_msg_type_values , \"unknown<S2SV_blank>(%u)\" , vqp_common_header -> msg_type ) , tok2str ( vqp_error_code_values , \"unknown<S2SV_blank>(%u)\" , vqp_common_header -> error_code ) , vqp_common_header -> error_code , len ) ) ; return ; } nitems = vqp_common_header -> nitems ; ND_PRINT ( ( ndo , \"\\\\n\\\\tVQPv%u,<S2SV_blank>%s<S2SV_blank>Message,<S2SV_blank>error-code<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>seq<S2SV_blank>0x%08x,<S2SV_blank>items<S2SV_blank>%u,<S2SV_blank>length<S2SV_blank>%u\" , VQP_EXTRACT_VERSION ( vqp_common_header -> version ) , tok2str ( vqp_msg_type_values , \"unknown<S2SV_blank>(%u)\" , vqp_common_header -> msg_type ) , tok2str ( vqp_error_code_values , \"unknown<S2SV_blank>(%u)\" , vqp_common_header -> error_code ) , vqp_common_header -> error_code , EXTRACT_32BITS ( & vqp_common_header -> sequence ) , nitems , len ) ) ; tptr += sizeof ( const struct vqp_common_header_t ) ; tlen -= sizeof ( const struct vqp_common_header_t ) ; while ( nitems > 0 && tlen > 0 ) { vqp_obj_tlv = ( const struct vqp_obj_tlv_t * ) tptr ; <S2SV_StartBug> vqp_obj_type = EXTRACT_32BITS ( vqp_obj_tlv -> obj_type ) ; <S2SV_EndBug> vqp_obj_len = EXTRACT_16BITS ( vqp_obj_tlv -> obj_length ) ; tptr += sizeof ( struct vqp_obj_tlv_t ) ; tlen -= sizeof ( struct vqp_obj_tlv_t ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Object<S2SV_blank>(0x%08x),<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>value:<S2SV_blank>\" , tok2str ( vqp_obj_values , \"Unknown\" , vqp_obj_type ) , vqp_obj_type , vqp_obj_len ) ) ; if ( vqp_obj_type == 0 || vqp_obj_len == 0 ) { return ; } ND_TCHECK2 ( * tptr , vqp_obj_len ) ; <S2SV_StartBug> switch ( vqp_obj_type ) { <S2SV_EndBug> case VQP_OBJ_IP_ADDRESS : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr ) ) ) ; <S2SV_EndBug> break ; case VQP_OBJ_PORT_NAME : case VQP_OBJ_VLAN_NAME : case VQP_OBJ_VTP_DOMAIN : case VQP_OBJ_ETHERNET_PKT : safeputs ( ndo , tptr , vqp_obj_len ) ; break ; case VQP_OBJ_MAC_ADDRESS : <S2SV_StartBug> case VQP_OBJ_MAC_NULL : <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , etheraddr_string ( ndo , tptr ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , vqp_obj_len ) ; break ; } tptr += vqp_obj_len ; tlen -= vqp_obj_len ; nitems -- ; } return ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t[|VQP]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t vqp_obj_type ; u_int <S2SV_ModEnd> tlen ; uint8_t <S2SV_ModStart> * vqp_common_header ) ; if ( sizeof ( struct vqp_common_header_t ) > tlen ) goto trunc <S2SV_ModStart> ) tptr ; ND_TCHECK ( * vqp_obj_tlv ) ; if ( sizeof ( struct vqp_obj_tlv_t ) > tlen ) goto trunc ; <S2SV_ModStart> vqp_obj_len ) ; if ( vqp_obj_len > tlen ) goto trunc ; <S2SV_ModStart> case VQP_OBJ_IP_ADDRESS : if ( vqp_obj_len != 4 ) goto trunc ; <S2SV_ModStart> case VQP_OBJ_MAC_NULL : if ( vqp_obj_len != ETHER_ADDR_LEN ) goto trunc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8693\n\n```\nCWE-415 static int mem_resize ( jas_stream_memobj_t * m , int bufsize ) { <S2SV_StartBug> unsigned char * buf ; <S2SV_EndBug> assert ( m -> buf_ ) ; assert ( bufsize >= 0 ) ; <S2SV_StartBug> if ( ! ( buf = jas_realloc2 ( m -> buf_ , bufsize , sizeof ( unsigned char ) ) ) ) { <S2SV_EndBug> return - 1 ; } m -> buf_ = buf ; m -> bufsize_ = bufsize ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * buf <S2SV_ModEnd> ; assert ( <S2SV_ModStart> ) ) ) && bufsize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6704\n\n```\nCWE-119 int sock_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; int val ; int valbool ; struct linger ling ; int ret = 0 ; if ( optname == SO_BINDTODEVICE ) return sock_bindtodevice ( sk , optval , optlen ) ; if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; valbool = val ? 1 : 0 ; lock_sock ( sk ) ; switch ( optname ) { case SO_DEBUG : if ( val && ! capable ( CAP_NET_ADMIN ) ) ret = - EACCES ; else sock_valbool_flag ( sk , SOCK_DBG , valbool ) ; break ; case SO_REUSEADDR : sk -> sk_reuse = ( valbool ? SK_CAN_REUSE : SK_NO_REUSE ) ; break ; case SO_TYPE : case SO_PROTOCOL : case SO_DOMAIN : case SO_ERROR : ret = - ENOPROTOOPT ; break ; case SO_DONTROUTE : sock_valbool_flag ( sk , SOCK_LOCALROUTE , valbool ) ; break ; case SO_BROADCAST : sock_valbool_flag ( sk , SOCK_BROADCAST , valbool ) ; break ; case SO_SNDBUF : <S2SV_StartBug> if ( val > sysctl_wmem_max ) <S2SV_EndBug> val = sysctl_wmem_max ; set_sndbuf : sk -> sk_userlocks |= SOCK_SNDBUF_LOCK ; <S2SV_StartBug> if ( ( val * 2 ) < SOCK_MIN_SNDBUF ) <S2SV_EndBug> sk -> sk_sndbuf = SOCK_MIN_SNDBUF ; else sk -> sk_sndbuf = val * 2 ; sk -> sk_write_space ( sk ) ; break ; case SO_SNDBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_sndbuf ; case SO_RCVBUF : <S2SV_StartBug> if ( val > sysctl_rmem_max ) <S2SV_EndBug> val = sysctl_rmem_max ; set_rcvbuf : sk -> sk_userlocks |= SOCK_RCVBUF_LOCK ; <S2SV_StartBug> if ( ( val * 2 ) < SOCK_MIN_RCVBUF ) <S2SV_EndBug> sk -> sk_rcvbuf = SOCK_MIN_RCVBUF ; else sk -> sk_rcvbuf = val * 2 ; break ; case SO_RCVBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_rcvbuf ; case SO_KEEPALIVE : # ifdef CONFIG_INET if ( sk -> sk_protocol == IPPROTO_TCP ) tcp_set_keepalive ( sk , valbool ) ; # endif sock_valbool_flag ( sk , SOCK_KEEPOPEN , valbool ) ; break ; case SO_OOBINLINE : sock_valbool_flag ( sk , SOCK_URGINLINE , valbool ) ; break ; case SO_NO_CHECK : sk -> sk_no_check = valbool ; break ; case SO_PRIORITY : if ( ( val >= 0 && val <= 6 ) || capable ( CAP_NET_ADMIN ) ) sk -> sk_priority = val ; else ret = - EPERM ; break ; case SO_LINGER : if ( optlen < sizeof ( ling ) ) { ret = - EINVAL ; break ; } if ( copy_from_user ( & ling , optval , sizeof ( ling ) ) ) { ret = - EFAULT ; break ; } if ( ! ling . l_onoff ) sock_reset_flag ( sk , SOCK_LINGER ) ; else { # if ( BITS_PER_LONG == 32 ) if ( ( unsigned int ) ling . l_linger >= MAX_SCHEDULE_TIMEOUT / HZ ) sk -> sk_lingertime = MAX_SCHEDULE_TIMEOUT ; else # endif sk -> sk_lingertime = ( unsigned int ) ling . l_linger * HZ ; sock_set_flag ( sk , SOCK_LINGER ) ; } break ; case SO_BSDCOMPAT : sock_warn_obsolete_bsdism ( \"setsockopt\" ) ; break ; case SO_PASSCRED : if ( valbool ) set_bit ( SOCK_PASSCRED , & sock -> flags ) ; else clear_bit ( SOCK_PASSCRED , & sock -> flags ) ; break ; case SO_TIMESTAMP : case SO_TIMESTAMPNS : if ( valbool ) { if ( optname == SO_TIMESTAMP ) sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; else sock_set_flag ( sk , SOCK_RCVTSTAMPNS ) ; sock_set_flag ( sk , SOCK_RCVTSTAMP ) ; sock_enable_timestamp ( sk , SOCK_TIMESTAMP ) ; } else { sock_reset_flag ( sk , SOCK_RCVTSTAMP ) ; sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; } break ; case SO_TIMESTAMPING : if ( val & ~ SOF_TIMESTAMPING_MASK ) { ret = - EINVAL ; break ; } sock_valbool_flag ( sk , SOCK_TIMESTAMPING_TX_HARDWARE , val & SOF_TIMESTAMPING_TX_HARDWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_TX_SOFTWARE , val & SOF_TIMESTAMPING_TX_SOFTWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_RX_HARDWARE , val & SOF_TIMESTAMPING_RX_HARDWARE ) ; if ( val & SOF_TIMESTAMPING_RX_SOFTWARE ) sock_enable_timestamp ( sk , SOCK_TIMESTAMPING_RX_SOFTWARE ) ; else sock_disable_timestamp ( sk , ( 1UL << SOCK_TIMESTAMPING_RX_SOFTWARE ) ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_SOFTWARE , val & SOF_TIMESTAMPING_SOFTWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_SYS_HARDWARE , val & SOF_TIMESTAMPING_SYS_HARDWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_RAW_HARDWARE , val & SOF_TIMESTAMPING_RAW_HARDWARE ) ; break ; case SO_RCVLOWAT : if ( val < 0 ) val = INT_MAX ; sk -> sk_rcvlowat = val ? : 1 ; break ; case SO_RCVTIMEO : ret = sock_set_timeout ( & sk -> sk_rcvtimeo , optval , optlen ) ; break ; case SO_SNDTIMEO : ret = sock_set_timeout ( & sk -> sk_sndtimeo , optval , optlen ) ; break ; case SO_ATTACH_FILTER : ret = - EINVAL ; if ( optlen == sizeof ( struct sock_fprog ) ) { struct sock_fprog fprog ; ret = - EFAULT ; if ( copy_from_user ( & fprog , optval , sizeof ( fprog ) ) ) break ; ret = sk_attach_filter ( & fprog , sk ) ; } break ; case SO_DETACH_FILTER : ret = sk_detach_filter ( sk ) ; break ; case SO_PASSSEC : if ( valbool ) set_bit ( SOCK_PASSSEC , & sock -> flags ) ; else clear_bit ( SOCK_PASSSEC , & sock -> flags ) ; break ; case SO_MARK : if ( ! capable ( CAP_NET_ADMIN ) ) ret = - EPERM ; else sk -> sk_mark = val ; break ; case SO_RXQ_OVFL : sock_valbool_flag ( sk , SOCK_RXQ_OVFL , valbool ) ; break ; case SO_WIFI_STATUS : sock_valbool_flag ( sk , SOCK_WIFI_STATUS , valbool ) ; break ; case SO_PEEK_OFF : if ( sock -> ops -> set_peek_off ) sock -> ops -> set_peek_off ( sk , val ) ; else ret = - EOPNOTSUPP ; break ; case SO_NOFCS : sock_valbool_flag ( sk , SOCK_NOFCS , valbool ) ; break ; default : ret = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case SO_SNDBUF : val = min_t ( u32 , val , sysctl_wmem_max ) <S2SV_ModEnd> ; set_sndbuf : <S2SV_ModStart> |= SOCK_SNDBUF_LOCK ; sk -> sk_sndbuf = max_t ( u32 , <S2SV_ModEnd> val * 2 <S2SV_ModStart> val * 2 , SOCK_MIN_SNDBUF ) <S2SV_ModEnd> ; sk -> <S2SV_ModStart> case SO_RCVBUF : val = min_t ( u32 , val , sysctl_rmem_max ) <S2SV_ModEnd> ; set_rcvbuf : <S2SV_ModStart> |= SOCK_RCVBUF_LOCK ; sk -> sk_rcvbuf = max_t ( u32 , <S2SV_ModEnd> val * 2 <S2SV_ModStart> val * 2 , SOCK_MIN_RCVBUF ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-522(凭证保护不足)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7524\n\n```\nCWE-522 <S2SV_StartBug> TPM_RC tpm_kdfa ( TSS2_SYS_CONTEXT * sapi_context , TPMI_ALG_HASH hashAlg , <S2SV_EndBug> TPM2B * key , char * label , TPM2B * contextU , TPM2B * contextV , UINT16 bits , TPM2B_MAX_BUFFER * resultKey ) { <S2SV_StartBug> TPM2B_DIGEST tmpResult ; <S2SV_EndBug> TPM2B_DIGEST tpm2bLabel , tpm2bBits , tpm2b_i_2 ; UINT8 * tpm2bBitsPtr = & tpm2bBits . t . buffer [ 0 ] ; UINT8 * tpm2b_i_2Ptr = & tpm2b_i_2 . t . buffer [ 0 ] ; TPM2B_DIGEST * bufferList [ 8 ] ; UINT32 bitsSwizzled , i_Swizzled ; <S2SV_StartBug> TPM_RC rval ; <S2SV_EndBug> int i , j ; UINT16 bytes = bits / 8 ; resultKey -> t . size = 0 ; tpm2b_i_2 . t . size = 4 ; tpm2bBits . t . size = 4 ; bitsSwizzled = string_bytes_endian_convert_32 ( bits ) ; * ( UINT32 * ) tpm2bBitsPtr = bitsSwizzled ; for ( i = 0 ; label [ i ] != 0 ; i ++ ) ; tpm2bLabel . t . size = i + 1 ; for ( i = 0 ; i < tpm2bLabel . t . size ; i ++ ) { tpm2bLabel . t . buffer [ i ] = label [ i ] ; } resultKey -> t . size = 0 ; i = 1 ; <S2SV_StartBug> while ( resultKey -> t . size < bytes ) <S2SV_EndBug> { <S2SV_StartBug> i_Swizzled = string_bytes_endian_convert_32 ( i ) ; <S2SV_EndBug> * ( UINT32 * ) tpm2b_i_2Ptr = i_Swizzled ; j = 0 ; bufferList [ j ++ ] = ( TPM2B_DIGEST * ) & ( tpm2b_i_2 . b ) ; bufferList [ j ++ ] = ( TPM2B_DIGEST * ) & ( tpm2bLabel . b ) ; bufferList [ j ++ ] = ( TPM2B_DIGEST * ) contextU ; bufferList [ j ++ ] = ( TPM2B_DIGEST * ) contextV ; bufferList [ j ++ ] = ( TPM2B_DIGEST * ) & ( tpm2bBits . b ) ; <S2SV_StartBug> bufferList [ j ++ ] = ( TPM2B_DIGEST * ) 0 ; <S2SV_EndBug> <S2SV_StartBug> rval = tpm_hmac ( sapi_context , hashAlg , key , ( TPM2B * * ) & ( bufferList [ 0 ] ) , & tmpResult ) ; <S2SV_EndBug> <S2SV_StartBug> if ( rval != TPM_RC_SUCCESS ) <S2SV_EndBug> { return ( rval ) ; } bool res = string_bytes_concat_buffer ( resultKey , & ( tmpResult . b ) ) ; if ( ! res ) { <S2SV_StartBug> return TSS2_SYS_RC_BAD_VALUE ; <S2SV_EndBug> } } resultKey -> t . size = bytes ; return TPM_RC_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TPM_RC tpm_kdfa ( <S2SV_ModEnd> TPMI_ALG_HASH hashAlg , <S2SV_ModStart> ) { TPM2B_DIGEST <S2SV_ModEnd> tpm2bLabel , tpm2bBits <S2SV_ModStart> ; TPM_RC rval = TPM_RC_SUCCESS <S2SV_ModStart> = 1 ; const EVP_MD * md = tpm_algorithm_to_openssl_digest ( hashAlg ) ; if ( ! md ) { LOG_ERR ( \"Algorithm<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>for<S2SV_blank>hmac:<S2SV_blank>%x\" , hashAlg ) ; return TPM_RC_HASH ; } HMAC_CTX ctx ; HMAC_CTX_init ( & ctx ) ; int rc = HMAC_Init_ex ( & ctx , key -> buffer , key -> size , md , NULL ) ; if ( ! rc ) { LOG_ERR ( \"HMAC<S2SV_blank>Init<S2SV_blank>failed:<S2SV_blank>%s\" , ERR_error_string ( rc , NULL ) ) ; return TPM_RC_MEMORY ; } <S2SV_ModStart> bytes ) { TPM2B_DIGEST tmpResult ; <S2SV_ModStart> bufferList [ j ] = ( TPM2B_DIGEST * ) 0 ; int c ; for ( c = 0 ; c < j ; c ++ ) { TPM2B_DIGEST * digest = bufferList [ c ] ; int rc = HMAC_Update ( & ctx , digest -> b . buffer , digest -> b . size ) ; if ( ! rc ) { LOG_ERR ( \"HMAC<S2SV_blank>Update<S2SV_blank>failed:<S2SV_blank>%s\" , ERR_error_string ( rc , NULL ) ) <S2SV_ModEnd> ; rval = <S2SV_ModStart> ; rval = TPM_RC_MEMORY ; goto err ; } } unsigned size = sizeof ( tmpResult . t . buffer ) ; int rc = HMAC_Final ( & ctx , tmpResult . t . buffer , & size <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; if ( ! rc ) { LOG_ERR ( \"HMAC<S2SV_blank>Final<S2SV_blank>failed:<S2SV_blank>%s\" , ERR_error_string ( rc , NULL ) ) ; rval = TPM_RC_MEMORY ; goto err ; } tmpResult . t . size = size ; <S2SV_ModEnd> bool res = <S2SV_ModStart> res ) { rval = TSS2_SYS_RC_BAD_VALUE ; goto err ; } } resultKey -> t . size = bytes ; err : HMAC_CTX_cleanup ( & ctx ) ; return rval <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13690\n\n```\nCWE-125 static const u_char * ikev2_ke_print ( netdissect_options * ndo , u_char tpay , const struct isakmp_gen * ext , u_int item_len _U_ , const u_char * ep _U_ , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { struct ikev2_ke ke ; const struct ikev2_ke * k ; k = ( const struct ikev2_ke * ) ext ; <S2SV_StartBug> ND_TCHECK ( * ext ) ; <S2SV_EndBug> UNALIGNED_MEMCPY ( & ke , ext , sizeof ( ke ) ) ; ikev2_pay_print ( ndo , NPSTR ( tpay ) , ke . h . critical ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%u<S2SV_blank>group=%s\" , ntohs ( ke . h . len ) - 8 , STR_OR_ID ( ntohs ( ke . ke_group ) , dh_p_map ) ) ) ; if ( 2 < ndo -> ndo_vflag && 8 < ntohs ( ke . h . len ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( k + 1 ) , ntohs ( ke . h . len ) - 8 ) ) goto trunc ; } return ( const u_char * ) ext + ntohs ( ke . h . len ) ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( tpay ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ND_TCHECK ( * k <S2SV_ModEnd> ) ; UNALIGNED_MEMCPY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6548\n\n```\nCWE-200 static int udf_encode_fh ( struct inode * inode , __u32 * fh , int * lenp , struct inode * parent ) { int len = * lenp ; struct kernel_lb_addr location = UDF_I ( inode ) -> i_location ; struct fid * fid = ( struct fid * ) fh ; int type = FILEID_UDF_WITHOUT_PARENT ; if ( parent && ( len < 5 ) ) { * lenp = 5 ; return 255 ; } else if ( len < 3 ) { * lenp = 3 ; return 255 ; } * lenp = 3 ; fid -> udf . block = location . logicalBlockNum ; fid -> udf . partref = location . partitionReferenceNum ; <S2SV_StartBug> fid -> udf . generation = inode -> i_generation ; <S2SV_EndBug> if ( parent ) { location = UDF_I ( parent ) -> i_location ; fid -> udf . parent_block = location . logicalBlockNum ; fid -> udf . parent_partref = location . partitionReferenceNum ; fid -> udf . parent_generation = inode -> i_generation ; * lenp = 5 ; type = FILEID_UDF_WITH_PARENT ; } return type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> udf . parent_partref = 0 ; fid -> udf .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6544\n\n```\nCWE-200 static int l2cap_sock_getname ( struct socket * sock , struct sockaddr * addr , int * len , int peer ) { struct sockaddr_l2 * la = ( struct sockaddr_l2 * ) addr ; struct sock * sk = sock -> sk ; struct l2cap_chan * chan = l2cap_pi ( sk ) -> chan ; <S2SV_StartBug> BT_DBG ( \"sock<S2SV_blank>%p,<S2SV_blank>sk<S2SV_blank>%p\" , sock , sk ) ; <S2SV_EndBug> addr -> sa_family = AF_BLUETOOTH ; * len = sizeof ( struct sockaddr_l2 ) ; if ( peer ) { la -> l2_psm = chan -> psm ; bacpy ( & la -> l2_bdaddr , & bt_sk ( sk ) -> dst ) ; la -> l2_cid = cpu_to_le16 ( chan -> dcid ) ; } else { la -> l2_psm = chan -> sport ; bacpy ( & la -> l2_bdaddr , & bt_sk ( sk ) -> src ) ; la -> l2_cid = cpu_to_le16 ( chan -> scid ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock , sk ) ; memset ( la , 0 , sizeof ( struct sockaddr_l2 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6817\n\n```\nCWE-287 static void start_auth_request ( PgSocket * client , const char * username ) { int res ; PktBuf * buf ; <S2SV_StartBug> client -> auth_user = client -> db -> auth_user ; <S2SV_EndBug> client -> pool = get_pool ( client -> db , client -> db -> auth_user ) ; if ( ! find_server ( client ) ) { client -> wait_for_user_conn = true ; return ; } slog_noise ( client , \"Doing<S2SV_blank>auth_conn<S2SV_blank>query\" ) ; client -> wait_for_user_conn = false ; client -> wait_for_user = true ; if ( ! sbuf_pause ( & client -> sbuf ) ) { release_server ( client -> link ) ; disconnect_client ( client , true , \"pause<S2SV_blank>failed\" ) ; return ; } client -> link -> ready = 0 ; res = 0 ; buf = pktbuf_dynamic ( 512 ) ; if ( buf ) { pktbuf_write_ExtQuery ( buf , cf_auth_query , 1 , username ) ; res = pktbuf_send_immediate ( buf , client -> link ) ; pktbuf_free ( buf ) ; } if ( ! res ) disconnect_server ( client -> link , false , \"unable<S2SV_blank>to<S2SV_blank>send<S2SV_blank>login<S2SV_blank>query\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; client -> <S2SV_ModEnd> pool = get_pool\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0587\n\n```\nCWE-119 IV_API_CALL_STATUS_T impeg2d_api_entity ( iv_obj_t * ps_dechdl , void * pv_api_ip , void * pv_api_op ) { iv_obj_t * ps_dec_handle ; dec_state_t * ps_dec_state ; dec_state_multi_core_t * ps_dec_state_multi_core ; impeg2d_video_decode_ip_t * ps_dec_ip ; impeg2d_video_decode_op_t * ps_dec_op ; WORD32 bytes_remaining ; pic_buf_t * ps_disp_pic ; ps_dec_ip = ( impeg2d_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( impeg2d_video_decode_op_t * ) pv_api_op ; memset ( ps_dec_op , 0 , sizeof ( impeg2d_video_decode_op_t ) ) ; ps_dec_op -> s_ivd_video_decode_op_t . u4_size = sizeof ( impeg2d_video_decode_op_t ) ; ps_dec_op -> s_ivd_video_decode_op_t . u4_output_present = 0 ; bytes_remaining = ps_dec_ip -> s_ivd_video_decode_ip_t . u4_num_Bytes ; ps_dec_handle = ( iv_obj_t * ) ps_dechdl ; if ( ps_dechdl == NULL ) { return ( IV_FAIL ) ; } ps_dec_state_multi_core = ps_dec_handle -> pv_codec_handle ; ps_dec_state = ps_dec_state_multi_core -> ps_dec_state [ 0 ] ; ps_dec_state -> ps_disp_frm_buf = & ( ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf ) ; if ( 0 == ps_dec_state -> u4_share_disp_buf ) { ps_dec_state -> ps_disp_frm_buf -> pv_y_buf = ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 0 ] ; ps_dec_state -> ps_disp_frm_buf -> pv_u_buf = ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 1 ] ; ps_dec_state -> ps_disp_frm_buf -> pv_v_buf = ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 2 ] ; } ps_dec_state -> ps_disp_pic = NULL ; ps_dec_state -> i4_frame_decoded = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . u4_error_code = IV_SUCCESS ; if ( ( ps_dec_ip -> s_ivd_video_decode_ip_t . pv_stream_buffer == NULL ) && ( ps_dec_state -> u1_flushfrm == 0 ) ) { ps_dec_op -> s_ivd_video_decode_op_t . u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> s_ivd_video_decode_op_t . u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_state -> u4_num_frames_decoded > NUM_FRAMES_LIMIT ) { ps_dec_op -> s_ivd_video_decode_op_t . u4_error_code = IMPEG2D_SAMPLE_VERSION_LIMIT_ERR ; return ( IV_FAIL ) ; } if ( ( ( 0 == ps_dec_state -> u2_header_done ) || ( ps_dec_state -> u2_decode_header == 1 ) ) && ( ps_dec_state -> u1_flushfrm == 0 ) ) { impeg2d_dec_hdr ( ps_dec_state , ps_dec_ip , ps_dec_op ) ; bytes_remaining -= ps_dec_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed ; } <S2SV_StartBug> if ( ( 1 != ps_dec_state -> u2_decode_header ) && ( ( bytes_remaining > 0 ) || ps_dec_state -> u1_flushfrm ) ) <S2SV_EndBug> { if ( ps_dec_state -> u1_flushfrm ) { if ( ps_dec_state -> aps_ref_pics [ 1 ] != NULL ) { impeg2_disp_mgr_add ( & ps_dec_state -> s_disp_mgr , ps_dec_state -> aps_ref_pics [ 1 ] , ps_dec_state -> aps_ref_pics [ 1 ] -> i4_buf_id ) ; impeg2_buf_mgr_release ( ps_dec_state -> pv_pic_buf_mg , ps_dec_state -> aps_ref_pics [ 1 ] -> i4_buf_id , BUF_MGR_REF ) ; impeg2_buf_mgr_release ( ps_dec_state -> pv_pic_buf_mg , ps_dec_state -> aps_ref_pics [ 0 ] -> i4_buf_id , BUF_MGR_REF ) ; ps_dec_state -> aps_ref_pics [ 1 ] = NULL ; ps_dec_state -> aps_ref_pics [ 0 ] = NULL ; } else if ( ps_dec_state -> aps_ref_pics [ 0 ] != NULL ) { impeg2_disp_mgr_add ( & ps_dec_state -> s_disp_mgr , ps_dec_state -> aps_ref_pics [ 0 ] , ps_dec_state -> aps_ref_pics [ 0 ] -> i4_buf_id ) ; impeg2_buf_mgr_release ( ps_dec_state -> pv_pic_buf_mg , ps_dec_state -> aps_ref_pics [ 0 ] -> i4_buf_id , BUF_MGR_REF ) ; ps_dec_state -> aps_ref_pics [ 0 ] = NULL ; } ps_dec_ip -> s_ivd_video_decode_ip_t . u4_size = sizeof ( impeg2d_video_decode_ip_t ) ; ps_dec_op -> s_ivd_video_decode_op_t . u4_size = sizeof ( impeg2d_video_decode_op_t ) ; ps_disp_pic = impeg2_disp_mgr_get ( & ps_dec_state -> s_disp_mgr , & ps_dec_state -> i4_disp_buf_id ) ; ps_dec_state -> ps_disp_pic = ps_disp_pic ; if ( ps_disp_pic == NULL ) { ps_dec_op -> s_ivd_video_decode_op_t . u4_output_present = 0 ; } else { WORD32 fmt_conv ; if ( 0 == ps_dec_state -> u4_share_disp_buf ) { ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . pv_y_buf = ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 0 ] ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . pv_u_buf = ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 1 ] ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . pv_v_buf = ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 2 ] ; fmt_conv = 1 ; } else { ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . pv_y_buf = ps_disp_pic -> pu1_y ; if ( IV_YUV_420P == ps_dec_state -> i4_chromaFormat ) { ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . pv_u_buf = ps_disp_pic -> pu1_u ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . pv_v_buf = ps_disp_pic -> pu1_v ; fmt_conv = 0 ; } else { UWORD8 * pu1_buf ; pu1_buf = ps_dec_state -> as_disp_buffers [ ps_disp_pic -> i4_buf_id ] . pu1_bufs [ 1 ] ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . pv_u_buf = pu1_buf ; pu1_buf = ps_dec_state -> as_disp_buffers [ ps_disp_pic -> i4_buf_id ] . pu1_bufs [ 2 ] ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . pv_v_buf = pu1_buf ; fmt_conv = 1 ; } } if ( fmt_conv == 1 ) { iv_yuv_buf_t * ps_dst ; ps_dst = & ( ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf ) ; if ( ps_dec_state -> u4_deinterlace && ( 0 == ps_dec_state -> u2_progressive_frame ) ) { impeg2d_deinterlace ( ps_dec_state , ps_disp_pic , ps_dst , 0 , ps_dec_state -> u2_vertical_size ) ; } else { impeg2d_format_convert ( ps_dec_state , ps_disp_pic , ps_dst , 0 , ps_dec_state -> u2_vertical_size ) ; } } if ( ps_dec_state -> u4_deinterlace ) { if ( ps_dec_state -> ps_deint_pic ) { impeg2_buf_mgr_release ( ps_dec_state -> pv_pic_buf_mg , ps_dec_state -> ps_deint_pic -> i4_buf_id , MPEG2_BUF_MGR_DEINT ) ; } ps_dec_state -> ps_deint_pic = ps_disp_pic ; } if ( 0 == ps_dec_state -> u4_share_disp_buf ) impeg2_buf_mgr_release ( ps_dec_state -> pv_pic_buf_mg , ps_disp_pic -> i4_buf_id , BUF_MGR_DISP ) ; ps_dec_op -> s_ivd_video_decode_op_t . u4_pic_ht = ps_dec_state -> u2_vertical_size ; ps_dec_op -> s_ivd_video_decode_op_t . u4_pic_wd = ps_dec_state -> u2_horizontal_size ; ps_dec_op -> s_ivd_video_decode_op_t . u4_output_present = 1 ; ps_dec_op -> s_ivd_video_decode_op_t . u4_disp_buf_id = ps_disp_pic -> i4_buf_id ; ps_dec_op -> s_ivd_video_decode_op_t . u4_ts = ps_disp_pic -> u4_ts ; ps_dec_op -> s_ivd_video_decode_op_t . e_output_format = ( IV_COLOR_FORMAT_T ) ps_dec_state -> i4_chromaFormat ; ps_dec_op -> s_ivd_video_decode_op_t . u4_is_ref_flag = ( B_PIC != ps_dec_state -> e_pic_type ) ; ps_dec_op -> s_ivd_video_decode_op_t . u4_progressive_frame_flag = IV_PROGRESSIVE ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_y_wd = ps_dec_state -> u2_horizontal_size ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_y_strd = ps_dec_state -> u4_frm_buf_stride ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_y_ht = ps_dec_state -> u2_vertical_size ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_wd = ps_dec_state -> u2_horizontal_size >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_strd = ps_dec_state -> u4_frm_buf_stride >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_ht = ps_dec_state -> u2_vertical_size >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_wd = ps_dec_state -> u2_horizontal_size >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_strd = ps_dec_state -> u4_frm_buf_stride >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_ht = ps_dec_state -> u2_vertical_size >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_size = sizeof ( ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf ) ; switch ( ps_dec_state -> i4_chromaFormat ) { case IV_YUV_420SP_UV : case IV_YUV_420SP_VU : ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_wd = ps_dec_state -> u2_horizontal_size ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_strd = ps_dec_state -> u4_frm_buf_stride ; break ; case IV_YUV_422ILE : ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_wd = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_ht = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_wd = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_ht = 0 ; break ; default : break ; } } if ( ps_dec_op -> s_ivd_video_decode_op_t . u4_output_present ) { if ( 1 == ps_dec_op -> s_ivd_video_decode_op_t . u4_output_present ) { INSERT_LOGO ( ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 2 ] , ps_dec_state -> u4_frm_buf_stride , ps_dec_state -> u2_horizontal_size , ps_dec_state -> u2_vertical_size , ps_dec_state -> i4_chromaFormat , ps_dec_state -> u2_horizontal_size , ps_dec_state -> u2_vertical_size ) ; } return ( IV_SUCCESS ) ; } else { ps_dec_state -> u1_flushfrm = 0 ; return ( IV_FAIL ) ; } } else if ( ps_dec_state -> u1_flushfrm == 0 ) { ps_dec_ip -> s_ivd_video_decode_ip_t . u4_size = sizeof ( impeg2d_video_decode_ip_t ) ; ps_dec_op -> s_ivd_video_decode_op_t . u4_size = sizeof ( impeg2d_video_decode_op_t ) ; if ( ps_dec_ip -> s_ivd_video_decode_ip_t . u4_num_Bytes < 4 ) { ps_dec_op -> s_ivd_video_decode_op_t . u4_num_bytes_consumed = ps_dec_ip -> s_ivd_video_decode_ip_t . u4_num_Bytes ; return ( IV_FAIL ) ; } if ( 1 == ps_dec_state -> u4_share_disp_buf ) { if ( 0 == impeg2_buf_mgr_check_free ( ps_dec_state -> pv_pic_buf_mg ) ) { ps_dec_op -> s_ivd_video_decode_op_t . u4_error_code = ( IMPEG2D_ERROR_CODES_T ) IVD_DEC_REF_BUF_NULL ; return IV_FAIL ; } } ps_dec_op -> s_ivd_video_decode_op_t . e_output_format = ( IV_COLOR_FORMAT_T ) ps_dec_state -> i4_chromaFormat ; ps_dec_op -> s_ivd_video_decode_op_t . u4_is_ref_flag = ( B_PIC != ps_dec_state -> e_pic_type ) ; ps_dec_op -> s_ivd_video_decode_op_t . u4_progressive_frame_flag = IV_PROGRESSIVE ; if ( 0 == ps_dec_state -> u4_frm_buf_stride ) { ps_dec_state -> u4_frm_buf_stride = ( ps_dec_state -> u2_horizontal_size ) ; } ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_y_wd = ps_dec_state -> u2_horizontal_size ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_y_strd = ps_dec_state -> u4_frm_buf_stride ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_y_ht = ps_dec_state -> u2_vertical_size ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_wd = ps_dec_state -> u2_horizontal_size >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_strd = ps_dec_state -> u4_frm_buf_stride >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_ht = ps_dec_state -> u2_vertical_size >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_wd = ps_dec_state -> u2_horizontal_size >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_strd = ps_dec_state -> u4_frm_buf_stride >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_ht = ps_dec_state -> u2_vertical_size >> 1 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_size = sizeof ( ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf ) ; switch ( ps_dec_state -> i4_chromaFormat ) { case IV_YUV_420SP_UV : case IV_YUV_420SP_VU : ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_wd = ps_dec_state -> u2_horizontal_size ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_strd = ps_dec_state -> u4_frm_buf_stride ; break ; case IV_YUV_422ILE : ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_wd = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_u_ht = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_wd = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . s_disp_frm_buf . u4_v_ht = 0 ; break ; default : break ; } if ( ps_dec_state -> u1_flushfrm == 0 ) { ps_dec_state -> u1_flushcnt = 0 ; impeg2d_dec_frm ( ps_dec_state , ps_dec_ip , ps_dec_op ) ; if ( IVD_ERROR_NONE == ps_dec_op -> s_ivd_video_decode_op_t . u4_error_code ) { if ( ps_dec_state -> u1_first_frame_done == 0 ) { ps_dec_state -> u1_first_frame_done = 1 ; } if ( ps_dec_state -> ps_disp_pic ) { ps_dec_op -> s_ivd_video_decode_op_t . u4_output_present = 1 ; switch ( ps_dec_state -> ps_disp_pic -> e_pic_type ) { case I_PIC : ps_dec_op -> s_ivd_video_decode_op_t . e_pic_type = IV_I_FRAME ; break ; case P_PIC : ps_dec_op -> s_ivd_video_decode_op_t . e_pic_type = IV_P_FRAME ; break ; case B_PIC : ps_dec_op -> s_ivd_video_decode_op_t . e_pic_type = IV_B_FRAME ; break ; case D_PIC : ps_dec_op -> s_ivd_video_decode_op_t . e_pic_type = IV_I_FRAME ; break ; default : ps_dec_op -> s_ivd_video_decode_op_t . e_pic_type = IV_FRAMETYPE_DEFAULT ; break ; } } else { ps_dec_op -> s_ivd_video_decode_op_t . u4_output_present = 0 ; ps_dec_op -> s_ivd_video_decode_op_t . e_pic_type = IV_NA_FRAME ; } ps_dec_state -> u4_num_frames_decoded ++ ; } } else { ps_dec_state -> u1_flushcnt ++ ; } } if ( ps_dec_state -> ps_disp_pic ) { ps_dec_op -> s_ivd_video_decode_op_t . u4_disp_buf_id = ps_dec_state -> ps_disp_pic -> i4_buf_id ; ps_dec_op -> s_ivd_video_decode_op_t . u4_ts = ps_dec_state -> ps_disp_pic -> u4_ts ; if ( 0 == ps_dec_state -> u4_share_disp_buf ) { impeg2_buf_mgr_release ( ps_dec_state -> pv_pic_buf_mg , ps_dec_state -> ps_disp_pic -> i4_buf_id , BUF_MGR_DISP ) ; } } if ( ps_dec_state -> u4_deinterlace ) { if ( ps_dec_state -> ps_deint_pic ) { impeg2_buf_mgr_release ( ps_dec_state -> pv_pic_buf_mg , ps_dec_state -> ps_deint_pic -> i4_buf_id , MPEG2_BUF_MGR_DEINT ) ; } ps_dec_state -> ps_deint_pic = ps_dec_state -> ps_disp_pic ; } if ( 1 == ps_dec_op -> s_ivd_video_decode_op_t . u4_output_present ) { INSERT_LOGO ( ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_ivd_video_decode_ip_t . s_out_buffer . pu1_bufs [ 2 ] , ps_dec_state -> u4_frm_buf_stride , ps_dec_state -> u2_horizontal_size , ps_dec_state -> u2_vertical_size , ps_dec_state -> i4_chromaFormat , ps_dec_state -> u2_horizontal_size , ps_dec_state -> u2_vertical_size ) ; } } ps_dec_op -> s_ivd_video_decode_op_t . u4_progressive_frame_flag = 1 ; ps_dec_op -> s_ivd_video_decode_op_t . e4_fld_type = ps_dec_state -> s_disp_op . e4_fld_type ; if ( ps_dec_op -> s_ivd_video_decode_op_t . u4_error_code ) return IV_FAIL ; else return IV_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u2_decode_header ) && ( <S2SV_ModStart> bytes_remaining > 0 ) && ( 1 == ps_dec_state -> u2_header_done )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static void nfs4_open_confirm_release ( void * calldata ) { struct nfs4_opendata * data = calldata ; struct nfs4_state * state = NULL ; if ( data -> cancelled == 0 ) goto out_free ; if ( ! data -> rpc_done ) goto out_free ; state = nfs4_opendata_to_nfs4_state ( data ) ; if ( ! IS_ERR ( state ) ) <S2SV_StartBug> nfs4_close_state ( & data -> path , state , data -> o_arg . open_flags ) ; <S2SV_EndBug> out_free : nfs4_opendata_put ( data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> o_arg . fmode <S2SV_ModEnd> ) ; out_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7514\n\n```\nCWE-125 static MagickBooleanType ReadPSDChannelPixels ( Image * image , const size_t channels , const size_t row , const ssize_t type , const unsigned char * pixels , ExceptionInfo * exception ) { Quantum pixel ; register const unsigned char * p ; register Quantum * q ; register ssize_t x ; size_t packet_size ; unsigned short nibble ; p = pixels ; q = GetAuthenticPixels ( image , 0 , row , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) return MagickFalse ; packet_size = GetPSDPacketSize ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( packet_size == 1 ) pixel = ScaleCharToQuantum ( * p ++ ) ; else { p = PushShortPixel ( MSBEndian , p , & nibble ) ; pixel = ScaleShortToQuantum ( nibble ) ; } switch ( type ) { case - 1 : { SetPixelAlpha ( image , pixel , q ) ; break ; } case - 2 : case 0 : { SetPixelRed ( image , pixel , q ) ; if ( channels == 1 || type == - 2 ) SetPixelGray ( image , pixel , q ) ; if ( image -> storage_class == PseudoClass ) { if ( packet_size == 1 ) SetPixelIndex ( image , ScaleQuantumToChar ( pixel ) , q ) ; else SetPixelIndex ( image , ScaleQuantumToShort ( pixel ) , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) ConstrainColormapIndex ( image , GetPixelIndex ( image , q ) , exception ) , q ) ; if ( image -> depth == 1 ) { ssize_t bit , number_bits ; number_bits = image -> columns - x ; if ( number_bits > 8 ) number_bits = 8 ; for ( bit = 0 ; bit < number_bits ; bit ++ ) { SetPixelIndex ( image , ( ( ( unsigned char ) pixel ) & ( 0x01 << ( 7 - bit ) ) ) != 0 ? 0 : 255 , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) <S2SV_StartBug> GetPixelIndex ( image , q ) , q ) ; <S2SV_EndBug> q += GetPixelChannels ( image ) ; x ++ ; } x -- ; continue ; } } break ; } case 1 : { if ( image -> storage_class == PseudoClass ) SetPixelAlpha ( image , pixel , q ) ; else SetPixelGreen ( image , pixel , q ) ; break ; } case 2 : { if ( image -> storage_class == PseudoClass ) SetPixelAlpha ( image , pixel , q ) ; else SetPixelBlue ( image , pixel , q ) ; break ; } case 3 : { if ( image -> colorspace == CMYKColorspace ) SetPixelBlack ( image , pixel , q ) ; else if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , pixel , q ) ; break ; } case 4 : { if ( ( IssRGBCompatibleColorspace ( image -> colorspace ) != MagickFalse ) && ( channels > 3 ) ) break ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , pixel , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } return ( SyncAuthenticPixels ( image , exception ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ssize_t ) ConstrainColormapIndex ( image , <S2SV_ModStart> image , q ) , exception\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void duplicate_mode_info_in_sb ( VP9_COMMON * const cm , <S2SV_EndBug> <S2SV_StartBug> MACROBLOCKD * const xd , <S2SV_EndBug> int mi_row , int mi_col , BLOCK_SIZE bsize ) { const int block_width = num_8x8_blocks_wide_lookup [ bsize ] ; const int block_height = num_8x8_blocks_high_lookup [ bsize ] ; int i , j ; for ( j = 0 ; j < block_height ; ++ j ) for ( i = 0 ; i < block_width ; ++ i ) { if ( mi_row + j < cm -> mi_rows && mi_col + i < cm -> mi_cols ) xd -> mi [ j * xd -> mi_stride + i ] = xd -> mi [ 0 ] ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( VP9_COMMON * <S2SV_ModEnd> cm , MACROBLOCKD <S2SV_ModStart> , MACROBLOCKD * <S2SV_ModEnd> xd , int\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int irda_recvmsg_stream ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct irda_sock * self = irda_sk ( sk ) ; int noblock = flags & MSG_DONTWAIT ; size_t copied = 0 ; int target , err ; long timeo ; IRDA_DEBUG ( 3 , \"%s()\\\\n\" , __func__ ) ; if ( ( err = sock_error ( sk ) ) < 0 ) return err ; if ( sock -> flags & __SO_ACCEPTCON ) return - EINVAL ; err = - EOPNOTSUPP ; if ( flags & MSG_OOB ) return - EOPNOTSUPP ; err = 0 ; target = sock_rcvlowat ( sk , flags & MSG_WAITALL , size ) ; timeo = sock_rcvtimeo ( sk , noblock ) ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> do { int chunk ; struct sk_buff * skb = skb_dequeue ( & sk -> sk_receive_queue ) ; if ( skb == NULL ) { DEFINE_WAIT ( wait ) ; err = 0 ; if ( copied >= target ) break ; prepare_to_wait_exclusive ( sk_sleep ( sk ) , & wait , TASK_INTERRUPTIBLE ) ; err = sock_error ( sk ) ; if ( err ) ; else if ( sk -> sk_shutdown & RCV_SHUTDOWN ) ; else if ( noblock ) err = - EAGAIN ; else if ( signal_pending ( current ) ) err = sock_intr_errno ( timeo ) ; else if ( sk -> sk_state != TCP_ESTABLISHED ) err = - ENOTCONN ; else if ( skb_peek ( & sk -> sk_receive_queue ) == NULL ) schedule ( ) ; finish_wait ( sk_sleep ( sk ) , & wait ) ; if ( err ) return err ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; continue ; } chunk = min_t ( unsigned int , skb -> len , size ) ; if ( memcpy_toiovec ( msg -> msg_iov , skb -> data , chunk ) ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; if ( copied == 0 ) copied = - EFAULT ; break ; } copied += chunk ; size -= chunk ; if ( ! ( flags & MSG_PEEK ) ) { skb_pull ( skb , chunk ) ; if ( skb -> len ) { IRDA_DEBUG ( 1 , \"%s(),<S2SV_blank>back<S2SV_blank>on<S2SV_blank>q!\\\\n\" , __func__ ) ; skb_queue_head ( & sk -> sk_receive_queue , skb ) ; break ; } kfree_skb ( skb ) ; } else { IRDA_DEBUG ( 0 , \"%s()<S2SV_blank>questionable!?\\\\n\" , __func__ ) ; skb_queue_head ( & sk -> sk_receive_queue , skb ) ; break ; } } while ( size ) ; if ( self -> rx_flow == FLOW_STOP ) { if ( ( atomic_read ( & sk -> sk_rmem_alloc ) << 2 ) <= sk -> sk_rcvbuf ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Starting<S2SV_blank>IrTTP\\\\n\" , __func__ ) ; self -> rx_flow = FLOW_START ; irttp_flow_request ( self -> tsap , FLOW_START ) ; } } return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> noblock ) ; <S2SV_ModEnd> do { int\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10661\n\n```\nCWE-416 static void timerfd_remove_cancel ( struct timerfd_ctx * ctx ) { <S2SV_StartBug> if ( ctx -> might_cancel ) { <S2SV_EndBug> ctx -> might_cancel = false ; <S2SV_StartBug> spin_lock ( & cancel_lock ) ; <S2SV_EndBug> <S2SV_StartBug> list_del_rcu ( & ctx -> clist ) ; <S2SV_EndBug> <S2SV_StartBug> spin_unlock ( & cancel_lock ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx ) { <S2SV_ModEnd> spin_lock ( & <S2SV_ModStart> spin_lock ( & ctx -> <S2SV_ModStart> cancel_lock ) ; __timerfd_remove_cancel ( ctx <S2SV_ModEnd> ) ; spin_unlock <S2SV_ModStart> spin_unlock ( & ctx -> <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4997\n\n```\nCWE-264 <S2SV_StartBug> int xt_check_entry_offsets ( const void * base , <S2SV_EndBug> unsigned int target_offset , unsigned int next_offset ) { <S2SV_StartBug> const struct xt_entry_target * t ; <S2SV_EndBug> <S2SV_StartBug> const char * e = base ; <S2SV_EndBug> if ( target_offset + sizeof ( * t ) > next_offset ) return - EINVAL ; t = ( void * ) ( e + target_offset ) ; if ( t -> u . target_size < sizeof ( * t ) ) return - EINVAL ; if ( target_offset + t -> u . target_size > next_offset ) return - EINVAL ; if ( strcmp ( t -> u . user . name , XT_STANDARD_TARGET ) == 0 && target_offset + sizeof ( struct xt_standard_target ) != next_offset ) return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void * base , const char * elems <S2SV_ModStart> next_offset ) { long size_of_base_struct = elems - ( const char * ) base ; <S2SV_ModStart> e = base ; if ( target_offset < size_of_base_struct ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6542\n\n```\nCWE-200 static int llc_ui_getname ( struct socket * sock , struct sockaddr * uaddr , int * uaddrlen , int peer ) { struct sockaddr_llc sllc ; struct sock * sk = sock -> sk ; struct llc_sock * llc = llc_sk ( sk ) ; <S2SV_StartBug> int rc = 0 ; <S2SV_EndBug> memset ( & sllc , 0 , sizeof ( sllc ) ) ; lock_sock ( sk ) ; if ( sock_flag ( sk , SOCK_ZAPPED ) ) goto out ; <S2SV_StartBug> * uaddrlen = sizeof ( sllc ) ; <S2SV_EndBug> memset ( uaddr , 0 , * uaddrlen ) ; if ( peer ) { rc = - ENOTCONN ; if ( sk -> sk_state != TCP_ESTABLISHED ) goto out ; if ( llc -> dev ) sllc . sllc_arphrd = llc -> dev -> type ; sllc . sllc_sap = llc -> daddr . lsap ; memcpy ( & sllc . sllc_mac , & llc -> daddr . mac , IFHWADDRLEN ) ; } else { rc = - EINVAL ; if ( ! llc -> sap ) goto out ; sllc . sllc_sap = llc -> sap -> laddr . lsap ; if ( llc -> dev ) { sllc . sllc_arphrd = llc -> dev -> type ; memcpy ( & sllc . sllc_mac , llc -> dev -> dev_addr , IFHWADDRLEN ) ; } } rc = 0 ; sllc . sllc_family = AF_LLC ; memcpy ( uaddr , & sllc , sizeof ( sllc ) ) ; out : release_sock ( sk ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int rc = - EBADF ; memset ( & sllc , 0 <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> sizeof ( sllc <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12589\n\n```\nCWE-284 void preproc_mount_mnt_dir ( void ) { if ( ! tmpfs_mounted ) { if ( arg_debug ) printf ( \"Mounting<S2SV_blank>tmpfs<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>directory\\\\n\" , RUN_MNT_DIR ) ; if ( mount ( \"tmpfs\" , RUN_MNT_DIR , \"tmpfs\" , MS_NOSUID | MS_STRICTATIME , \"mode=755,gid=0\" ) < 0 ) errExit ( \"mounting<S2SV_blank>/run/firejail/mnt\" ) ; tmpfs_mounted = 1 ; fs_logger2 ( \"tmpfs\" , RUN_MNT_DIR ) ; # ifdef HAVE_SECCOMP <S2SV_StartBug> if ( arg_seccomp_block_secondary ) <S2SV_EndBug> copy_file ( PATH_SECCOMP_BLOCK_SECONDARY , RUN_SECCOMP_BLOCK_SECONDARY , getuid ( ) , getgid ( ) , 0644 ) ; else { copy_file ( PATH_SECCOMP_32 , RUN_SECCOMP_32 , getuid ( ) , getgid ( ) , 0644 ) ; } if ( arg_allow_debuggers ) copy_file ( PATH_SECCOMP_DEFAULT_DEBUG , RUN_SECCOMP_CFG , getuid ( ) , getgid ( ) , 0644 ) ; else copy_file ( PATH_SECCOMP_DEFAULT , RUN_SECCOMP_CFG , getuid ( ) , getgid ( ) , 0644 ) ; if ( arg_memory_deny_write_execute ) copy_file ( PATH_SECCOMP_MDWX , RUN_SECCOMP_MDWX , getuid ( ) , getgid ( ) , 0644 ) ; create_empty_file_as_root ( RUN_SECCOMP_PROTOCOL , 0644 ) ; if ( set_perms ( RUN_SECCOMP_PROTOCOL , getuid ( ) , getgid ( ) , 0644 ) ) errExit ( \"set_perms\" ) ; create_empty_file_as_root ( RUN_SECCOMP_POSTEXEC , 0644 ) ; if ( set_perms ( RUN_SECCOMP_POSTEXEC , getuid ( ) , getgid ( ) , 0644 ) ) errExit ( \"set_perms\" ) ; # endif } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> # ifdef HAVE_SECCOMP create_empty_dir_as_root ( RUN_SECCOMP_DIR , 0755 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9213\n\n```\nCWE-476 int expand_downwards ( struct vm_area_struct * vma , unsigned long address ) { struct mm_struct * mm = vma -> vm_mm ; struct vm_area_struct * prev ; <S2SV_StartBug> int error ; <S2SV_EndBug> address &= PAGE_MASK ; <S2SV_StartBug> error = security_mmap_addr ( address ) ; <S2SV_EndBug> if ( error ) return error ; prev = vma -> vm_prev ; if ( prev && ! ( prev -> vm_flags & VM_GROWSDOWN ) && ( prev -> vm_flags & ( VM_WRITE | VM_READ | VM_EXEC ) ) ) { if ( address - prev -> vm_end < stack_guard_gap ) return - ENOMEM ; } if ( unlikely ( anon_vma_prepare ( vma ) ) ) return - ENOMEM ; anon_vma_lock_write ( vma -> anon_vma ) ; if ( address < vma -> vm_start ) { unsigned long size , grow ; size = vma -> vm_end - address ; grow = ( vma -> vm_start - address ) >> PAGE_SHIFT ; error = - ENOMEM ; if ( grow <= vma -> vm_pgoff ) { error = acct_stack_growth ( vma , size , grow ) ; if ( ! error ) { spin_lock ( & mm -> page_table_lock ) ; if ( vma -> vm_flags & VM_LOCKED ) mm -> locked_vm += grow ; vm_stat_account ( mm , vma -> vm_flags , grow ) ; anon_vma_interval_tree_pre_update_vma ( vma ) ; vma -> vm_start = address ; vma -> vm_pgoff -= grow ; anon_vma_interval_tree_post_update_vma ( vma ) ; vma_gap_update ( vma ) ; spin_unlock ( & mm -> page_table_lock ) ; perf_event_mmap ( vma ) ; } } } anon_vma_unlock_write ( vma -> anon_vma ) ; khugepaged_enter_vma_merge ( vma , vma -> vm_flags ) ; validate_mm ( mm ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int error = 0 <S2SV_ModStart> &= PAGE_MASK ; if ( address < mmap_min_addr ) return - EPERM <S2SV_ModEnd> ; prev =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13025\n\n```\nCWE-125 static int mobility_opt_print ( netdissect_options * ndo , const u_char * bp , const unsigned len ) { unsigned i , optlen ; for ( i = 0 ; i < len ; i += optlen ) { ND_TCHECK ( bp [ i ] ) ; if ( bp [ i ] == IP6MOPT_PAD1 ) optlen = 1 ; else { if ( i + 1 < len ) { ND_TCHECK ( bp [ i + 1 ] ) ; optlen = bp [ i + 1 ] + 2 ; } else goto trunc ; } if ( i + optlen > len ) goto trunc ; ND_TCHECK ( bp [ i + optlen ] ) ; switch ( bp [ i ] ) { case IP6MOPT_PAD1 : ND_PRINT ( ( ndo , \"(pad1)\" ) ) ; break ; case IP6MOPT_PADN : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(padn:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(padn)\" ) ) ; break ; case IP6MOPT_REFRESH : if ( len - i < IP6MOPT_REFRESH_MINLEN ) { ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ; ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>%u)\" , EXTRACT_16BITS ( & bp [ i + 2 ] ) << 2 ) ) ; break ; case IP6MOPT_ALTCOA : if ( len - i < IP6MOPT_ALTCOA_MINLEN ) { ND_PRINT ( ( ndo , \"(altcoa:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"(alt-CoA:<S2SV_blank>%s)\" , ip6addr_string ( ndo , & bp [ i + 2 ] ) ) ) ; <S2SV_EndBug> break ; case IP6MOPT_NONCEID : if ( len - i < IP6MOPT_NONCEID_MINLEN ) { ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ; ND_TCHECK_16BITS ( & bp [ i + 4 ] ) ; ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>ho=0x%04x<S2SV_blank>co=0x%04x)\" , EXTRACT_16BITS ( & bp [ i + 2 ] ) , EXTRACT_16BITS ( & bp [ i + 4 ] ) ) ) ; break ; case IP6MOPT_AUTH : if ( len - i < IP6MOPT_AUTH_MINLEN ) { ND_PRINT ( ( ndo , \"(auth:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(auth)\" ) ) ; break ; default : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(sopt_type<S2SV_blank>%u:<S2SV_blank>trunc)\" , bp [ i ] ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(type-0x%02x:<S2SV_blank>len=%u)\" , bp [ i ] , bp [ i + 1 ] ) ) ; break ; } } return 0 ; trunc : return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> trunc ; } ND_TCHECK_128BITS ( & bp [ i + 2 ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , char * * argv ) { int frame_cnt = 0 ; FILE * outfile = NULL ; vpx_codec_ctx_t codec ; const VpxInterface * decoder = NULL ; VpxVideoReader * reader = NULL ; const VpxVideoInfo * info = NULL ; int n = 0 ; int m = 0 ; int is_range = 0 ; char * nptr = NULL ; exec_name = argv [ 0 ] ; if ( argc != 4 ) die ( \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments.\" ) ; reader = vpx_video_reader_open ( argv [ 1 ] ) ; if ( ! reader ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading.\" , argv [ 1 ] ) ; if ( ! ( outfile = fopen ( argv [ 2 ] , \"wb\" ) ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing.\" , argv [ 2 ] ) ; n = strtol ( argv [ 3 ] , & nptr , 0 ) ; m = strtol ( nptr + 1 , NULL , 0 ) ; is_range = ( * nptr == '-' ) ; if ( ! n || ! m || ( * nptr != '-' && * nptr != '/' ) ) die ( \"Couldn\\'t<S2SV_blank>parse<S2SV_blank>pattern<S2SV_blank>%s.\\\\n\" , argv [ 3 ] ) ; info = vpx_video_reader_get_info ( reader ) ; decoder = get_vpx_decoder_by_fourcc ( info -> codec_fourcc ) ; if ( ! decoder ) die ( \"Unknown<S2SV_blank>input<S2SV_blank>codec.\" ) ; <S2SV_StartBug> printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( decoder -> interface ( ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( vpx_codec_dec_init ( & codec , decoder -> interface ( ) , NULL , 0 ) ) <S2SV_EndBug> die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>decoder.\" ) ; while ( vpx_video_reader_read_frame ( reader ) ) { vpx_codec_iter_t iter = NULL ; vpx_image_t * img = NULL ; size_t frame_size = 0 ; int skip ; const unsigned char * frame = vpx_video_reader_get_frame ( reader , & frame_size ) ; if ( vpx_codec_decode ( & codec , frame , ( unsigned int ) frame_size , NULL , 0 ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>frame.\" ) ; ++ frame_cnt ; skip = ( is_range && frame_cnt >= n && frame_cnt <= m ) || ( ! is_range && m - ( frame_cnt - 1 ) % m <= n ) ; if ( ! skip ) { putc ( '.' , stdout ) ; while ( ( img = vpx_codec_get_frame ( & codec , & iter ) ) != NULL ) vpx_img_write ( img , outfile ) ; } else { putc ( 'X' , stdout ) ; } fflush ( stdout ) ; } printf ( \"Processed<S2SV_blank>%d<S2SV_blank>frames.\\\\n\" , frame_cnt ) ; if ( vpx_codec_destroy ( & codec ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>codec.\" ) ; printf ( \"Play:<S2SV_blank>ffplay<S2SV_blank>-f<S2SV_blank>rawvideo<S2SV_blank>-pix_fmt<S2SV_blank>yuv420p<S2SV_blank>-s<S2SV_blank>%dx%d<S2SV_blank>%s\\\\n\" , info -> frame_width , info -> frame_height , argv [ 2 ] ) ; vpx_video_reader_close ( reader ) ; fclose ( outfile ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( decoder -> codec_interface <S2SV_ModEnd> ( ) ) <S2SV_ModStart> , decoder -> codec_interface <S2SV_ModEnd> ( ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-200 __be32 ipv6_select_ident ( struct net * net , const struct in6_addr * daddr , const struct in6_addr * saddr ) { <S2SV_StartBug> static u32 ip6_idents_hashrnd __read_mostly ; <S2SV_EndBug> u32 id ; net_get_random_once ( & ip6_idents_hashrnd , sizeof ( ip6_idents_hashrnd ) ) ; <S2SV_StartBug> id = __ipv6_select_ident ( net , ip6_idents_hashrnd , daddr , saddr ) ; <S2SV_EndBug> return htonl ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> saddr ) { u32 id <S2SV_ModEnd> ; id = <S2SV_ModStart> __ipv6_select_ident ( net <S2SV_ModEnd> , daddr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14466\n\n```\nCWE-125 static void rx_cache_insert ( netdissect_options * ndo , const u_char * bp , const struct ip * ip , int dport ) { struct rx_cache_entry * rxent ; const struct rx_header * rxh = ( const struct rx_header * ) bp ; if ( ndo -> ndo_snapend - bp + 1 <= ( int ) ( sizeof ( struct rx_header ) + sizeof ( int32_t ) ) ) return ; rxent = & rx_cache [ rx_cache_next ] ; if ( ++ rx_cache_next >= RX_CACHE_SIZE ) rx_cache_next = 0 ; rxent -> callnum = EXTRACT_32BITS ( & rxh -> callNumber ) ; UNALIGNED_MEMCPY ( & rxent -> client , & ip -> ip_src , sizeof ( uint32_t ) ) ; UNALIGNED_MEMCPY ( & rxent -> server , & ip -> ip_dst , sizeof ( uint32_t ) ) ; rxent -> dport = dport ; <S2SV_StartBug> rxent -> serviceId = EXTRACT_32BITS ( & rxh -> serviceId ) ; <S2SV_EndBug> rxent -> opcode = EXTRACT_32BITS ( bp + sizeof ( struct rx_header ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> serviceId = EXTRACT_16BITS <S2SV_ModEnd> ( & rxh\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_model_to_full_probs ( const vp9_prob * model , vp9_prob * full ) { <S2SV_EndBug> if ( full != model ) <S2SV_StartBug> vpx_memcpy ( full , model , sizeof ( vp9_prob ) * UNCONSTRAINED_NODES ) ; <S2SV_EndBug> extend_to_full_distribution ( & full [ UNCONSTRAINED_NODES ] , model [ PIVOT_NODE ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_model_to_full_probs ( const vpx_prob <S2SV_ModEnd> * model , <S2SV_ModStart> * model , vpx_prob <S2SV_ModEnd> * full ) <S2SV_ModStart> != model ) memcpy <S2SV_ModEnd> ( full , <S2SV_ModStart> , sizeof ( vpx_prob <S2SV_ModEnd> ) * UNCONSTRAINED_NODES\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_CreateArray ( void ) { cJSON * item = cJSON_New_Item ( ) ; if ( item ) item -> type = cJSON_Array ; return item ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16939\n\n```\nCWE-416 static int xfrm_dump_policy_done ( struct netlink_callback * cb ) { <S2SV_StartBug> struct xfrm_policy_walk * walk = ( struct xfrm_policy_walk * ) & cb -> args [ 1 ] ; <S2SV_EndBug> struct net * net = sock_net ( cb -> skb -> sk ) ; xfrm_policy_walk_done ( walk , net ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> xfrm_policy_walk * ) <S2SV_ModEnd> cb -> args <S2SV_ModStart> cb -> args <S2SV_ModEnd> ; struct net\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-704(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18386\n\n```\nCWE-704 static void n_tty_set_termios ( struct tty_struct * tty , struct ktermios * old ) { struct n_tty_data * ldata = tty -> disc_data ; <S2SV_StartBug> if ( ! old || ( old -> c_lflag ^ tty -> termios . c_lflag ) & ICANON ) { <S2SV_EndBug> bitmap_zero ( ldata -> read_flags , N_TTY_BUF_SIZE ) ; ldata -> line_start = ldata -> read_tail ; if ( ! L_ICANON ( tty ) || ! read_cnt ( ldata ) ) { ldata -> canon_head = ldata -> read_tail ; ldata -> push = 0 ; } else { set_bit ( ( ldata -> read_head - 1 ) & ( N_TTY_BUF_SIZE - 1 ) , ldata -> read_flags ) ; ldata -> canon_head = ldata -> read_head ; ldata -> push = 1 ; } ldata -> commit_head = ldata -> read_head ; ldata -> erasing = 0 ; ldata -> lnext = 0 ; } ldata -> icanon = ( L_ICANON ( tty ) != 0 ) ; if ( I_ISTRIP ( tty ) || I_IUCLC ( tty ) || I_IGNCR ( tty ) || I_ICRNL ( tty ) || I_INLCR ( tty ) || L_ICANON ( tty ) || I_IXON ( tty ) || L_ISIG ( tty ) || L_ECHO ( tty ) || I_PARMRK ( tty ) ) { bitmap_zero ( ldata -> char_map , 256 ) ; if ( I_IGNCR ( tty ) || I_ICRNL ( tty ) ) set_bit ( '\\\\r' , ldata -> char_map ) ; if ( I_INLCR ( tty ) ) set_bit ( '\\\\n' , ldata -> char_map ) ; if ( L_ICANON ( tty ) ) { set_bit ( ERASE_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( KILL_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( EOF_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( '\\\\n' , ldata -> char_map ) ; set_bit ( EOL_CHAR ( tty ) , ldata -> char_map ) ; if ( L_IEXTEN ( tty ) ) { set_bit ( WERASE_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( LNEXT_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( EOL2_CHAR ( tty ) , ldata -> char_map ) ; if ( L_ECHO ( tty ) ) set_bit ( REPRINT_CHAR ( tty ) , ldata -> char_map ) ; } } if ( I_IXON ( tty ) ) { set_bit ( START_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( STOP_CHAR ( tty ) , ldata -> char_map ) ; } if ( L_ISIG ( tty ) ) { set_bit ( INTR_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( QUIT_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( SUSP_CHAR ( tty ) , ldata -> char_map ) ; } clear_bit ( __DISABLED_CHAR , ldata -> char_map ) ; ldata -> raw = 0 ; ldata -> real_raw = 0 ; } else { ldata -> raw = 1 ; if ( ( I_IGNBRK ( tty ) || ( ! I_BRKINT ( tty ) && ! I_PARMRK ( tty ) ) ) && ( I_IGNPAR ( tty ) || ! I_INPCK ( tty ) ) && ( tty -> driver -> flags & TTY_DRIVER_REAL_RAW ) ) ldata -> real_raw = 1 ; else ldata -> real_raw = 0 ; } if ( ! I_IXON ( tty ) && old && ( old -> c_iflag & IXON ) && ! tty -> flow_stopped ) { start_tty ( tty ) ; process_echoes ( tty ) ; } wake_up_interruptible ( & tty -> write_wait ) ; wake_up_interruptible ( & tty -> read_wait ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c_lflag ) & ( ICANON | EXTPROC ) <S2SV_ModEnd> ) { bitmap_zero\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1805\n\n```\nCWE-17 static ssize_t <S2SV_StartBug> pipe_write ( struct kiocb * iocb , const struct iovec * _iov , <S2SV_EndBug> unsigned long nr_segs , loff_t ppos ) { struct file * filp = iocb -> ki_filp ; struct pipe_inode_info * pipe = filp -> private_data ; <S2SV_StartBug> ssize_t ret ; <S2SV_EndBug> <S2SV_StartBug> int do_wakeup ; <S2SV_EndBug> struct iovec * iov = ( struct iovec * ) _iov ; <S2SV_StartBug> size_t total_len ; <S2SV_EndBug> ssize_t chars ; <S2SV_StartBug> total_len = iov_length ( iov , nr_segs ) ; <S2SV_EndBug> if ( unlikely ( total_len == 0 ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> do_wakeup = 0 ; ret = 0 ; __pipe_lock ( pipe ) ; if ( ! pipe -> readers ) { send_sig ( SIGPIPE , current , 0 ) ; ret = - EPIPE ; goto out ; } chars = total_len & ( PAGE_SIZE - 1 ) ; if ( pipe -> nrbufs && chars != 0 ) { int lastbuf = ( pipe -> curbuf + pipe -> nrbufs - 1 ) & ( pipe -> buffers - 1 ) ; struct pipe_buffer * buf = pipe -> bufs + lastbuf ; const struct pipe_buf_operations * ops = buf -> ops ; int offset = buf -> offset + buf -> len ; if ( ops -> can_merge && offset + chars <= PAGE_SIZE ) { <S2SV_StartBug> int error , atomic = 1 ; <S2SV_EndBug> void * addr ; error = ops -> confirm ( pipe , buf ) ; if ( error ) goto out ; <S2SV_StartBug> iov_fault_in_pages_read ( iov , chars ) ; <S2SV_EndBug> redo1 : if ( atomic ) addr = kmap_atomic ( buf -> page ) ; else addr = kmap ( buf -> page ) ; error = pipe_iov_copy_from_user ( offset + addr , iov , chars , atomic ) ; if ( atomic ) kunmap_atomic ( addr ) ; else kunmap ( buf -> page ) ; ret = error ; do_wakeup = 1 ; if ( error ) { if ( atomic ) { atomic = 0 ; goto redo1 ; } goto out ; <S2SV_StartBug> } <S2SV_EndBug> buf -> len += chars ; <S2SV_StartBug> total_len -= chars ; <S2SV_EndBug> ret = chars ; if ( ! total_len ) goto out ; } } for ( ; ; ) { int bufs ; if ( ! pipe -> readers ) { send_sig ( SIGPIPE , current , 0 ) ; if ( ! ret ) ret = - EPIPE ; break ; } bufs = pipe -> nrbufs ; if ( bufs < pipe -> buffers ) { int newbuf = ( pipe -> curbuf + bufs ) & ( pipe -> buffers - 1 ) ; struct pipe_buffer * buf = pipe -> bufs + newbuf ; struct page * page = pipe -> tmp_page ; <S2SV_StartBug> char * src ; <S2SV_EndBug> int error , atomic = 1 ; if ( ! page ) { page = alloc_page ( GFP_HIGHUSER ) ; if ( unlikely ( ! page ) ) { ret = ret ? : - ENOMEM ; break ; } pipe -> tmp_page = page ; } do_wakeup = 1 ; <S2SV_StartBug> chars = PAGE_SIZE ; <S2SV_EndBug> if ( chars > total_len ) chars = total_len ; iov_fault_in_pages_read ( iov , chars ) ; redo2 : if ( atomic ) src = kmap_atomic ( page ) ; else src = kmap ( page ) ; error = pipe_iov_copy_from_user ( src , iov , chars , atomic ) ; if ( atomic ) kunmap_atomic ( src ) ; else kunmap ( page ) ; <S2SV_StartBug> if ( unlikely ( error ) ) { <S2SV_EndBug> if ( atomic ) { atomic = 0 ; goto redo2 ; } if ( ! ret ) ret = error ; break ; } <S2SV_StartBug> ret += chars ; <S2SV_EndBug> buf -> page = page ; buf -> ops = & anon_pipe_buf_ops ; buf -> offset = 0 ; <S2SV_StartBug> buf -> len = chars ; <S2SV_EndBug> buf -> flags = 0 ; if ( is_packetized ( filp ) ) { buf -> ops = & packet_pipe_buf_ops ; buf -> flags = PIPE_BUF_FLAG_PACKET ; } pipe -> nrbufs = ++ bufs ; pipe -> tmp_page = NULL ; <S2SV_StartBug> total_len -= chars ; <S2SV_EndBug> if ( ! total_len ) break ; } if ( bufs < pipe -> buffers ) continue ; if ( filp -> f_flags & O_NONBLOCK ) { if ( ! ret ) ret = - EAGAIN ; break ; } if ( signal_pending ( current ) ) { if ( ! ret ) ret = - ERESTARTSYS ; break ; } if ( do_wakeup ) { wake_up_interruptible_sync_poll ( & pipe -> wait , POLLIN | POLLRDNORM ) ; kill_fasync ( & pipe -> fasync_readers , SIGIO , POLL_IN ) ; do_wakeup = 0 ; } pipe -> waiting_writers ++ ; pipe_wait ( pipe ) ; pipe -> waiting_writers -- ; } out : __pipe_unlock ( pipe ) ; if ( do_wakeup ) { wake_up_interruptible_sync_poll ( & pipe -> wait , POLLIN | POLLRDNORM ) ; kill_fasync ( & pipe -> fasync_readers , SIGIO , POLL_IN ) ; } if ( ret > 0 && sb_start_write_trylock ( file_inode ( filp ) -> i_sb ) ) { int err = file_update_time ( filp ) ; if ( err ) ret = err ; sb_end_write ( file_inode ( filp ) -> i_sb ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * iocb , struct iov_iter * from <S2SV_ModEnd> ) { struct <S2SV_ModStart> ; ssize_t ret = 0 <S2SV_ModStart> ; int do_wakeup = 0 <S2SV_ModEnd> ; size_t total_len <S2SV_ModStart> ; size_t total_len = iov_iter_count ( from ) <S2SV_ModStart> ssize_t chars ; <S2SV_ModEnd> if ( unlikely <S2SV_ModStart> ) ) return <S2SV_ModEnd> 0 ; __pipe_lock <S2SV_ModStart> { int error <S2SV_ModEnd> = ops -> <S2SV_ModStart> goto out ; ret = copy_page_from_iter ( buf -> page , offset , chars , from ) ; if ( unlikely ( ret < chars ) ) { error = - EFAULT ; <S2SV_ModEnd> goto out ; <S2SV_ModStart> out ; } do_wakeup = 1 ; <S2SV_ModStart> += chars ; ret = chars ; if ( ! iov_iter_count ( from ) <S2SV_ModEnd> ) goto out <S2SV_ModStart> -> tmp_page ; int copied <S2SV_ModEnd> ; if ( <S2SV_ModStart> = 1 ; copied = copy_page_from_iter ( page , 0 , PAGE_SIZE , from <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( unlikely ( copied < PAGE_SIZE && iov_iter_count ( from ) ) ) { if ( ! ret ) ret = - EFAULT <S2SV_ModEnd> ; break ; <S2SV_ModStart> } ret += copied <S2SV_ModEnd> ; buf -> <S2SV_ModStart> -> len = copied <S2SV_ModEnd> ; buf -> <S2SV_ModStart> = NULL ; if ( ! iov_iter_count ( from ) <S2SV_ModEnd> ) break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4027\n\n```\nCWE-200 static void rd_release_device_space ( struct rd_dev * rd_dev ) { <S2SV_StartBug> u32 i , j , page_count = 0 , sg_per_table ; <S2SV_EndBug> struct rd_dev_sg_table * sg_table ; struct page * pg ; struct scatterlist * sg ; if ( ! rd_dev -> sg_table_array || ! rd_dev -> sg_table_count ) return ; <S2SV_StartBug> sg_table = rd_dev -> sg_table_array ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < rd_dev -> sg_table_count ; i ++ ) { <S2SV_EndBug> sg = sg_table [ i ] . sg_table ; sg_per_table = sg_table [ i ] . rd_sg_count ; for ( j = 0 ; j < sg_per_table ; j ++ ) { pg = sg_page ( & sg [ j ] ) ; if ( pg ) { __free_page ( pg ) ; page_count ++ ; } } kfree ( sg ) ; } pr_debug ( \"CORE_RD[%u]<S2SV_blank>-<S2SV_blank>Released<S2SV_blank>device<S2SV_blank>space<S2SV_blank>for<S2SV_blank>Ramdisk\" \"<S2SV_blank>Device<S2SV_blank>ID:<S2SV_blank>%u,<S2SV_blank>pages<S2SV_blank>%u<S2SV_blank>in<S2SV_blank>%u<S2SV_blank>tables<S2SV_blank>total<S2SV_blank>bytes<S2SV_blank>%lu\\\\n\" , rd_dev -> rd_host -> rd_host_id , rd_dev -> rd_dev_id , page_count , rd_dev -> sg_table_count , ( unsigned long ) page_count * PAGE_SIZE ) ; <S2SV_StartBug> kfree ( sg_table ) ; <S2SV_EndBug> rd_dev -> sg_table_array = NULL ; rd_dev -> sg_table_count = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { u32 page_count <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) return ; page_count = rd_release_sgl_table ( rd_dev , <S2SV_ModEnd> rd_dev -> sg_table_array <S2SV_ModStart> rd_dev -> sg_table_array , <S2SV_ModEnd> rd_dev -> sg_table_count <S2SV_ModStart> rd_dev -> sg_table_count ) ; <S2SV_ModEnd> pr_debug ( \"CORE_RD[%u]<S2SV_blank>-<S2SV_blank>Released<S2SV_blank>device<S2SV_blank>space<S2SV_blank>for<S2SV_blank>Ramdisk\" <S2SV_ModStart> PAGE_SIZE ) ; <S2SV_ModEnd> rd_dev -> sg_table_array\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5225\n\n```\nCWE-119 static int tiffcp ( TIFF * in , TIFF * out ) { <S2SV_StartBug> uint16 bitspersample , samplesperpixel = 1 ; <S2SV_EndBug> uint16 input_compression , input_photometric = PHOTOMETRIC_MINISBLACK ; copyFunc cf ; uint32 width , length ; struct cpTag * p ; CopyField ( TIFFTAG_IMAGEWIDTH , width ) ; CopyField ( TIFFTAG_IMAGELENGTH , length ) ; CopyField ( TIFFTAG_BITSPERSAMPLE , bitspersample ) ; CopyField ( TIFFTAG_SAMPLESPERPIXEL , samplesperpixel ) ; if ( compression != ( uint16 ) - 1 ) TIFFSetField ( out , TIFFTAG_COMPRESSION , compression ) ; else CopyField ( TIFFTAG_COMPRESSION , compression ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_COMPRESSION , & input_compression ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_PHOTOMETRIC , & input_photometric ) ; if ( input_compression == COMPRESSION_JPEG ) { TIFFSetField ( in , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RGB ) ; } else if ( input_photometric == PHOTOMETRIC_YCBCR ) { uint16 subsamplinghor , subsamplingver ; TIFFGetFieldDefaulted ( in , TIFFTAG_YCBCRSUBSAMPLING , & subsamplinghor , & subsamplingver ) ; if ( subsamplinghor != 1 || subsamplingver != 1 ) { fprintf ( stderr , \"tiffcp:<S2SV_blank>%s:<S2SV_blank>Can\\'t<S2SV_blank>copy/convert<S2SV_blank>subsampled<S2SV_blank>image.\\\\n\" , TIFFFileName ( in ) ) ; return FALSE ; } } if ( compression == COMPRESSION_JPEG ) { if ( input_photometric == PHOTOMETRIC_RGB && jpegcolormode == JPEGCOLORMODE_RGB ) TIFFSetField ( out , TIFFTAG_PHOTOMETRIC , PHOTOMETRIC_YCBCR ) ; else TIFFSetField ( out , TIFFTAG_PHOTOMETRIC , input_photometric ) ; } else if ( compression == COMPRESSION_SGILOG || compression == COMPRESSION_SGILOG24 ) TIFFSetField ( out , TIFFTAG_PHOTOMETRIC , samplesperpixel == 1 ? PHOTOMETRIC_LOGL : PHOTOMETRIC_LOGLUV ) ; else if ( input_compression == COMPRESSION_JPEG && samplesperpixel == 3 ) { TIFFSetField ( out , TIFFTAG_PHOTOMETRIC , PHOTOMETRIC_RGB ) ; } else CopyTag ( TIFFTAG_PHOTOMETRIC , 1 , TIFF_SHORT ) ; if ( fillorder != 0 ) TIFFSetField ( out , TIFFTAG_FILLORDER , fillorder ) ; else CopyTag ( TIFFTAG_FILLORDER , 1 , TIFF_SHORT ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_ORIENTATION , & orientation ) ; switch ( orientation ) { case ORIENTATION_BOTRIGHT : case ORIENTATION_RIGHTBOT : TIFFWarning ( TIFFFileName ( in ) , \"using<S2SV_blank>bottom-left<S2SV_blank>orientation\" ) ; orientation = ORIENTATION_BOTLEFT ; case ORIENTATION_LEFTBOT : case ORIENTATION_BOTLEFT : break ; case ORIENTATION_TOPRIGHT : case ORIENTATION_RIGHTTOP : default : TIFFWarning ( TIFFFileName ( in ) , \"using<S2SV_blank>top-left<S2SV_blank>orientation\" ) ; orientation = ORIENTATION_TOPLEFT ; case ORIENTATION_LEFTTOP : case ORIENTATION_TOPLEFT : break ; } TIFFSetField ( out , TIFFTAG_ORIENTATION , orientation ) ; if ( outtiled == - 1 ) outtiled = TIFFIsTiled ( in ) ; if ( outtiled ) { if ( tilewidth == ( uint32 ) - 1 ) TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tilewidth ) ; if ( tilelength == ( uint32 ) - 1 ) TIFFGetField ( in , TIFFTAG_TILELENGTH , & tilelength ) ; TIFFDefaultTileSize ( out , & tilewidth , & tilelength ) ; TIFFSetField ( out , TIFFTAG_TILEWIDTH , tilewidth ) ; TIFFSetField ( out , TIFFTAG_TILELENGTH , tilelength ) ; } else { if ( rowsperstrip == ( uint32 ) 0 ) { if ( ! TIFFGetField ( in , TIFFTAG_ROWSPERSTRIP , & rowsperstrip ) ) { rowsperstrip = TIFFDefaultStripSize ( out , rowsperstrip ) ; } if ( rowsperstrip > length && rowsperstrip != ( uint32 ) - 1 ) rowsperstrip = length ; } else if ( rowsperstrip == ( uint32 ) - 1 ) rowsperstrip = length ; TIFFSetField ( out , TIFFTAG_ROWSPERSTRIP , rowsperstrip ) ; } if ( config != ( uint16 ) - 1 ) TIFFSetField ( out , TIFFTAG_PLANARCONFIG , config ) ; else CopyField ( TIFFTAG_PLANARCONFIG , config ) ; if ( samplesperpixel <= 4 ) CopyTag ( TIFFTAG_TRANSFERFUNCTION , 4 , TIFF_SHORT ) ; CopyTag ( TIFFTAG_COLORMAP , 4 , TIFF_SHORT ) ; switch ( compression ) { case COMPRESSION_JPEG : TIFFSetField ( out , TIFFTAG_JPEGQUALITY , quality ) ; TIFFSetField ( out , TIFFTAG_JPEGCOLORMODE , jpegcolormode ) ; break ; case COMPRESSION_JBIG : CopyTag ( TIFFTAG_FAXRECVPARAMS , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXRECVTIME , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXSUBADDRESS , 1 , TIFF_ASCII ) ; CopyTag ( TIFFTAG_FAXDCS , 1 , TIFF_ASCII ) ; break ; case COMPRESSION_LZW : case COMPRESSION_ADOBE_DEFLATE : case COMPRESSION_DEFLATE : case COMPRESSION_LZMA : if ( predictor != ( uint16 ) - 1 ) TIFFSetField ( out , TIFFTAG_PREDICTOR , predictor ) ; else CopyField ( TIFFTAG_PREDICTOR , predictor ) ; if ( preset != - 1 ) { if ( compression == COMPRESSION_ADOBE_DEFLATE || compression == COMPRESSION_DEFLATE ) TIFFSetField ( out , TIFFTAG_ZIPQUALITY , preset ) ; else if ( compression == COMPRESSION_LZMA ) TIFFSetField ( out , TIFFTAG_LZMAPRESET , preset ) ; } break ; case COMPRESSION_CCITTFAX3 : case COMPRESSION_CCITTFAX4 : if ( compression == COMPRESSION_CCITTFAX3 ) { if ( g3opts != ( uint32 ) - 1 ) TIFFSetField ( out , TIFFTAG_GROUP3OPTIONS , g3opts ) ; else CopyField ( TIFFTAG_GROUP3OPTIONS , g3opts ) ; } else CopyTag ( TIFFTAG_GROUP4OPTIONS , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_BADFAXLINES , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_CLEANFAXDATA , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_CONSECUTIVEBADFAXLINES , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXRECVPARAMS , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXRECVTIME , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXSUBADDRESS , 1 , TIFF_ASCII ) ; break ; } { uint32 len32 ; void * * data ; if ( TIFFGetField ( in , TIFFTAG_ICCPROFILE , & len32 , & data ) ) TIFFSetField ( out , TIFFTAG_ICCPROFILE , len32 , data ) ; } { uint16 ninks ; const char * inknames ; if ( TIFFGetField ( in , TIFFTAG_NUMBEROFINKS , & ninks ) ) { TIFFSetField ( out , TIFFTAG_NUMBEROFINKS , ninks ) ; if ( TIFFGetField ( in , TIFFTAG_INKNAMES , & inknames ) ) { int inknameslen = strlen ( inknames ) + 1 ; const char * cp = inknames ; while ( ninks > 1 ) { cp = strchr ( cp , '\\\\0' ) ; cp ++ ; inknameslen += ( strlen ( cp ) + 1 ) ; ninks -- ; } TIFFSetField ( out , TIFFTAG_INKNAMES , inknameslen , inknames ) ; } } } { unsigned short pg0 , pg1 ; if ( pageInSeq == 1 ) { if ( pageNum < 0 ) { if ( TIFFGetField ( in , TIFFTAG_PAGENUMBER , & pg0 , & pg1 ) ) TIFFSetField ( out , TIFFTAG_PAGENUMBER , pg0 , pg1 ) ; } else TIFFSetField ( out , TIFFTAG_PAGENUMBER , pageNum ++ , 0 ) ; } else { if ( TIFFGetField ( in , TIFFTAG_PAGENUMBER , & pg0 , & pg1 ) ) { if ( pageNum < 0 ) TIFFSetField ( out , TIFFTAG_PAGENUMBER , pg0 , pg1 ) ; else TIFFSetField ( out , TIFFTAG_PAGENUMBER , pageNum ++ , 0 ) ; } } } for ( p = tags ; p < & tags [ NTAGS ] ; p ++ ) CopyTag ( p -> tag , p -> count , p -> type ) ; cf = pickCopyFunc ( in , out , bitspersample , samplesperpixel ) ; return ( cf ? ( * cf ) ( in , out , length , width , samplesperpixel ) : FALSE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { uint16 bitspersample = 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0393\n\n```\nCWE-000 void vp8mt_de_alloc_temp_buffers ( VP8D_COMP * pbi , int mb_rows ) { int i ; <S2SV_StartBug> if ( pbi -> b_multithreaded_rd ) <S2SV_EndBug> { vpx_free ( pbi -> mt_current_mb_col ) ; pbi -> mt_current_mb_col = NULL ; if ( pbi -> mt_yabove_row ) <S2SV_StartBug> { <S2SV_EndBug> for ( i = 0 ; i < mb_rows ; i ++ ) { vpx_free ( pbi -> mt_yabove_row [ i ] ) ; pbi -> mt_yabove_row [ i ] = NULL ; } vpx_free ( pbi -> mt_yabove_row ) ; pbi -> mt_yabove_row = NULL ; } if ( pbi -> mt_uabove_row ) <S2SV_StartBug> { <S2SV_EndBug> for ( i = 0 ; i < mb_rows ; i ++ ) { vpx_free ( pbi -> mt_uabove_row [ i ] ) ; pbi -> mt_uabove_row [ i ] = NULL ; } vpx_free ( pbi -> mt_uabove_row ) ; pbi -> mt_uabove_row = NULL ; } if ( pbi -> mt_vabove_row ) <S2SV_StartBug> { <S2SV_EndBug> for ( i = 0 ; i < mb_rows ; i ++ ) { vpx_free ( pbi -> mt_vabove_row [ i ] ) ; pbi -> mt_vabove_row [ i ] = NULL ; } vpx_free ( pbi -> mt_vabove_row ) ; pbi -> mt_vabove_row = NULL ; } if ( pbi -> mt_yleft_col ) <S2SV_StartBug> { <S2SV_EndBug> for ( i = 0 ; i < mb_rows ; i ++ ) { vpx_free ( pbi -> mt_yleft_col [ i ] ) ; pbi -> mt_yleft_col [ i ] = NULL ; } vpx_free ( pbi -> mt_yleft_col ) ; pbi -> mt_yleft_col = NULL ; } if ( pbi -> mt_uleft_col ) <S2SV_StartBug> { <S2SV_EndBug> for ( i = 0 ; i < mb_rows ; i ++ ) { vpx_free ( pbi -> mt_uleft_col [ i ] ) ; pbi -> mt_uleft_col [ i ] = NULL ; } vpx_free ( pbi -> mt_uleft_col ) ; pbi -> mt_uleft_col = NULL ; } if ( pbi -> mt_vleft_col ) <S2SV_StartBug> { <S2SV_EndBug> for ( i = 0 ; i < mb_rows ; i ++ ) { vpx_free ( pbi -> mt_vleft_col [ i ] ) ; pbi -> mt_vleft_col [ i ] = NULL ; } vpx_free ( pbi -> mt_vleft_col ) ; pbi -> mt_vleft_col = NULL ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; <S2SV_ModEnd> vpx_free ( pbi <S2SV_ModStart> -> mt_yabove_row ) { for ( i = 0 ; i < mb_rows ; ++ i ) <S2SV_ModEnd> { vpx_free ( <S2SV_ModStart> -> mt_uabove_row ) { for ( i = 0 ; i < mb_rows ; ++ i ) <S2SV_ModEnd> { vpx_free ( <S2SV_ModStart> -> mt_vabove_row ) { for ( i = 0 ; i < mb_rows ; ++ i ) <S2SV_ModEnd> { vpx_free ( <S2SV_ModStart> -> mt_yleft_col ) { for ( i = 0 ; i < mb_rows ; ++ i ) <S2SV_ModEnd> { vpx_free ( <S2SV_ModStart> -> mt_uleft_col ) { for ( i = 0 ; i < mb_rows ; ++ i ) <S2SV_ModEnd> { vpx_free ( <S2SV_ModStart> -> mt_vleft_col ) { for ( i = 0 ; i < mb_rows ; ++ i ) <S2SV_ModEnd> { vpx_free ( <S2SV_ModStart> ; } } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3980\n\n```\nCWE-264 FepClient * fep_client_open ( const char * address ) { FepClient * client ; struct sockaddr_un sun ; ssize_t sun_len ; int retval ; if ( ! address ) address = getenv ( \"LIBFEP_CONTROL_SOCK\" ) ; if ( ! address ) return NULL ; if ( strlen ( address ) + 1 >= sizeof ( sun . sun_path ) ) { fep_log ( FEP_LOG_LEVEL_WARNING , \"unix<S2SV_blank>domain<S2SV_blank>socket<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long:<S2SV_blank>%d<S2SV_blank>+<S2SV_blank>1<S2SV_blank>>=<S2SV_blank>%d\" , strlen ( address ) , sizeof ( sun . sun_path ) ) ; free ( address ) ; return NULL ; } client = xzalloc ( sizeof ( FepClient ) ) ; client -> filter_running = false ; client -> messages = NULL ; memset ( & sun , 0 , sizeof ( struct sockaddr_un ) ) ; sun . sun_family = AF_UNIX ; <S2SV_StartBug> # ifdef __linux__ <S2SV_EndBug> <S2SV_StartBug> sun . sun_path [ 0 ] = '\\\\0' ; <S2SV_EndBug> memcpy ( sun . sun_path + 1 , address , strlen ( address ) ) ; <S2SV_StartBug> sun_len = offsetof ( struct sockaddr_un , sun_path ) + strlen ( address ) + 1 ; <S2SV_EndBug> # else memcpy ( sun . sun_path , address , strlen ( address ) ) ; sun_len = sizeof ( struct sockaddr_un ) ; # endif client -> control = socket ( AF_UNIX , SOCK_STREAM , 0 ) ; if ( client -> control < 0 ) { free ( client ) ; return NULL ; } retval = connect ( client -> control , ( const struct sockaddr * ) & sun , sun_len ) ; if ( retval < 0 ) { close ( client -> control ) ; free ( client ) ; return NULL ; } return client ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = AF_UNIX ; memcpy ( <S2SV_ModEnd> sun . sun_path <S2SV_ModStart> sun . sun_path <S2SV_ModEnd> , address , <S2SV_ModStart> ; sun_len = sizeof <S2SV_ModEnd> ( struct sockaddr_un <S2SV_ModStart> ( struct sockaddr_un ) ; <S2SV_ModEnd> client -> control\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2548\n\n```\nCWE-310 static int crypto_report_cipher ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_cipher rcipher ; <S2SV_StartBug> snprintf ( rcipher . type , CRYPTO_MAX_ALG_NAME , \"%s\" , \"cipher\" ) ; <S2SV_EndBug> rcipher . blocksize = alg -> cra_blocksize ; rcipher . min_keysize = alg -> cra_cipher . cia_min_keysize ; rcipher . max_keysize = alg -> cra_cipher . cia_max_keysize ; if ( nla_put ( skb , CRYPTOCFGA_REPORT_CIPHER , sizeof ( struct crypto_report_cipher ) , & rcipher ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_cipher rcipher ; strncpy <S2SV_ModEnd> ( rcipher . <S2SV_ModStart> . type , \"cipher\" , sizeof ( rcipher . type ) <S2SV_ModEnd> ) ; rcipher\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13017\n\n```\nCWE-125 static void dhcp6opt_print ( netdissect_options * ndo , const u_char * cp , const u_char * ep ) { const struct dhcp6opt * dh6o ; const u_char * tp ; size_t i ; uint16_t opttype ; size_t optlen ; uint8_t auth_proto ; u_int authinfolen , authrealmlen ; int remain_len ; int label_len ; uint16_t subopt_code ; uint16_t subopt_len ; if ( cp == ep ) return ; while ( cp < ep ) { if ( ep < cp + sizeof ( * dh6o ) ) goto trunc ; dh6o = ( const struct dhcp6opt * ) cp ; ND_TCHECK ( * dh6o ) ; optlen = EXTRACT_16BITS ( & dh6o -> dh6opt_len ) ; if ( ep < cp + sizeof ( * dh6o ) + optlen ) goto trunc ; opttype = EXTRACT_16BITS ( & dh6o -> dh6opt_type ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s\" , tok2str ( dh6opt_str , \"opt_%u\" , opttype ) ) ) ; ND_TCHECK2 ( * ( cp + sizeof ( * dh6o ) ) , optlen ) ; switch ( opttype ) { case DH6OPT_CLIENTID : case DH6OPT_SERVERID : if ( optlen < 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; switch ( EXTRACT_16BITS ( tp ) ) { case 1 : if ( optlen >= 2 + 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>hwaddr/time<S2SV_blank>type<S2SV_blank>%u<S2SV_blank>time<S2SV_blank>%u<S2SV_blank>\" , EXTRACT_16BITS ( & tp [ 2 ] ) , EXTRACT_32BITS ( & tp [ 4 ] ) ) ) ; for ( i = 8 ; i < optlen ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; } break ; case 2 : if ( optlen >= 2 + 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>vid<S2SV_blank>\" ) ) ; for ( i = 2 ; i < 2 + 8 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; } break ; case 3 : if ( optlen >= 2 + 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>hwaddr<S2SV_blank>type<S2SV_blank>%u<S2SV_blank>\" , EXTRACT_16BITS ( & tp [ 2 ] ) ) ) ; for ( i = 4 ; i < optlen ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; } break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>type<S2SV_blank>%d)\" , EXTRACT_16BITS ( tp ) ) ) ; break ; } break ; case DH6OPT_IA_ADDR : if ( optlen < 24 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & tp [ 0 ] ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pltime:%u<S2SV_blank>vltime:%u\" , EXTRACT_32BITS ( & tp [ 16 ] ) , EXTRACT_32BITS ( & tp [ 20 ] ) ) ) ; if ( optlen > 24 ) { dhcp6opt_print ( ndo , tp + 24 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_ORO : case DH6OPT_ERO : if ( optlen % 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; for ( i = 0 ; i < optlen ; i += 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( dh6opt_str , \"opt_%u\" , EXTRACT_16BITS ( & tp [ i ] ) ) ) ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_PREFERENCE : if ( optlen != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%d)\" , * tp ) ) ; break ; case DH6OPT_ELAPSED_TIME : if ( optlen != 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%d)\" , EXTRACT_16BITS ( tp ) ) ) ; break ; case DH6OPT_RELAY_MSG : ND_PRINT ( ( ndo , \"<S2SV_blank>(\" ) ) ; tp = ( const u_char * ) ( dh6o + 1 ) ; dhcp6_print ( ndo , tp , optlen ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_AUTH : if ( optlen < 11 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; auth_proto = * tp ; switch ( auth_proto ) { case DH6OPT_AUTHPROTO_DELAYED : ND_PRINT ( ( ndo , \"<S2SV_blank>proto:<S2SV_blank>delayed\" ) ) ; break ; case DH6OPT_AUTHPROTO_RECONFIG : ND_PRINT ( ( ndo , \"<S2SV_blank>proto:<S2SV_blank>reconfigure\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>proto:<S2SV_blank>%d\" , auth_proto ) ) ; break ; } tp ++ ; switch ( * tp ) { case DH6OPT_AUTHALG_HMACMD5 : ND_PRINT ( ( ndo , \",<S2SV_blank>alg:<S2SV_blank>HMAC-MD5\" ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>alg:<S2SV_blank>%d\" , * tp ) ) ; break ; } tp ++ ; switch ( * tp ) { case DH6OPT_AUTHRDM_MONOCOUNTER : ND_PRINT ( ( ndo , \",<S2SV_blank>RDM:<S2SV_blank>mono\" ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>RDM:<S2SV_blank>%d\" , * tp ) ) ; break ; } tp ++ ; ND_PRINT ( ( ndo , \",<S2SV_blank>RD:\" ) ) ; for ( i = 0 ; i < 4 ; i ++ , tp += 2 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%04x\" , EXTRACT_16BITS ( tp ) ) ) ; authinfolen = optlen - 11 ; switch ( auth_proto ) { case DH6OPT_AUTHPROTO_DELAYED : if ( authinfolen == 0 ) break ; if ( authinfolen < 20 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>??\" ) ) ; break ; } authrealmlen = authinfolen - 20 ; if ( authrealmlen > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>realm:<S2SV_blank>\" ) ) ; } for ( i = 0 ; i < authrealmlen ; i ++ , tp ++ ) ND_PRINT ( ( ndo , \"%02x\" , * tp ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>key<S2SV_blank>ID:<S2SV_blank>%08x\" , EXTRACT_32BITS ( tp ) ) ) ; tp += 4 ; ND_PRINT ( ( ndo , \",<S2SV_blank>HMAC-MD5:\" ) ) ; for ( i = 0 ; i < 4 ; i ++ , tp += 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%08x\" , EXTRACT_32BITS ( tp ) ) ) ; break ; case DH6OPT_AUTHPROTO_RECONFIG : if ( authinfolen != 17 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>??\" ) ) ; break ; } switch ( * tp ++ ) { case DH6OPT_AUTHRECONFIG_KEY : ND_PRINT ( ( ndo , \"<S2SV_blank>reconfig-key\" ) ) ; break ; case DH6OPT_AUTHRECONFIG_HMACMD5 : ND_PRINT ( ( ndo , \"<S2SV_blank>type:<S2SV_blank>HMAC-MD5\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>type:<S2SV_blank>??\" ) ) ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>value:\" ) ) ; for ( i = 0 ; i < 4 ; i ++ , tp += 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%08x\" , EXTRACT_32BITS ( tp ) ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>??\" ) ) ; break ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_RAPID_COMMIT : ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_INTERFACE_ID : case DH6OPT_SUBSCRIBER_ID : tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; for ( i = 0 ; i < optlen && i < 10 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \"...)\" ) ) ; break ; <S2SV_StartBug> case DH6OPT_RECONF_MSG : <S2SV_EndBug> tp = ( const u_char * ) ( dh6o + 1 ) ; switch ( * tp ) { case DH6_RENEW : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>renew)\" ) ) ; break ; case DH6_INFORM_REQ : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>inf-req)\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>?\\\\?\\\\?(%02x))\" , * tp ) ) ; break ; } break ; case DH6OPT_RECONF_ACCEPT : ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_SIP_SERVER_A : case DH6OPT_DNS_SERVERS : case DH6OPT_SNTP_SERVERS : case DH6OPT_NIS_SERVERS : case DH6OPT_NISP_SERVERS : case DH6OPT_BCMCS_SERVER_A : case DH6OPT_PANA_AGENT : case DH6OPT_LQ_CLIENT_LINK : if ( optlen % 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; for ( i = 0 ; i < optlen ; i += 16 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & tp [ i ] ) ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_SIP_SERVER_D : case DH6OPT_DOMAIN_LIST : tp = ( const u_char * ) ( dh6o + 1 ) ; while ( tp < cp + sizeof ( * dh6o ) + optlen ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ( tp = ns_nprint ( ndo , tp , cp + sizeof ( * dh6o ) + optlen ) ) == NULL ) goto trunc ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_STATUS_CODE : if ( optlen < 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s)\" , dhcp6stcode ( EXTRACT_16BITS ( & tp [ 0 ] ) ) ) ) ; break ; case DH6OPT_IA_NA : case DH6OPT_IA_PD : if ( optlen < 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>IAID:%u<S2SV_blank>T1:%u<S2SV_blank>T2:%u\" , EXTRACT_32BITS ( & tp [ 0 ] ) , EXTRACT_32BITS ( & tp [ 4 ] ) , EXTRACT_32BITS ( & tp [ 8 ] ) ) ) ; if ( optlen > 12 ) { dhcp6opt_print ( ndo , tp + 12 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_IA_TA : if ( optlen < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>IAID:%u\" , EXTRACT_32BITS ( tp ) ) ) ; if ( optlen > 4 ) { dhcp6opt_print ( ndo , tp + 4 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_IA_PD_PREFIX : if ( optlen < 25 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s/%d\" , ip6addr_string ( ndo , & tp [ 9 ] ) , tp [ 8 ] ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pltime:%u<S2SV_blank>vltime:%u\" , EXTRACT_32BITS ( & tp [ 0 ] ) , EXTRACT_32BITS ( & tp [ 4 ] ) ) ) ; if ( optlen > 25 ) { dhcp6opt_print ( ndo , tp + 25 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_LIFETIME : case DH6OPT_CLT_TIME : if ( optlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%d)\" , EXTRACT_32BITS ( tp ) ) ) ; break ; case DH6OPT_REMOTE_ID : if ( optlen < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%d<S2SV_blank>\" , EXTRACT_32BITS ( tp ) ) ) ; for ( i = 4 ; i < optlen && i < 14 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \"...)\" ) ) ; break ; case DH6OPT_LQ_QUERY : if ( optlen < 17 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; switch ( * tp ) { case 1 : ND_PRINT ( ( ndo , \"<S2SV_blank>by-address\" ) ) ; break ; case 2 : ND_PRINT ( ( ndo , \"<S2SV_blank>by-clientID\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>type_%d\" , ( int ) * tp ) ) ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & tp [ 1 ] ) ) ) ; if ( optlen > 17 ) { dhcp6opt_print ( ndo , tp + 17 , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_CLIENT_DATA : tp = ( const u_char * ) ( dh6o + 1 ) ; if ( optlen > 0 ) { dhcp6opt_print ( ndo , tp , tp + optlen ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_LQ_RELAY_DATA : if ( optlen < 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>\" , ip6addr_string ( ndo , & tp [ 0 ] ) ) ) ; for ( i = 16 ; i < optlen && i < 26 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , tp [ i ] ) ) ; ND_PRINT ( ( ndo , \"...)\" ) ) ; break ; case DH6OPT_NTP_SERVER : if ( optlen < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; while ( tp < cp + sizeof ( * dh6o ) + optlen - 4 ) { subopt_code = EXTRACT_16BITS ( tp ) ; tp += 2 ; subopt_len = EXTRACT_16BITS ( tp ) ; tp += 2 ; if ( tp + subopt_len > cp + sizeof ( * dh6o ) + optlen ) goto trunc ; ND_PRINT ( ( ndo , \"<S2SV_blank>subopt:%d\" , subopt_code ) ) ; switch ( subopt_code ) { case DH6OPT_NTP_SUBOPTION_SRV_ADDR : case DH6OPT_NTP_SUBOPTION_MC_ADDR : if ( subopt_len != 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?\" ) ) ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & tp [ 0 ] ) ) ) ; break ; case DH6OPT_NTP_SUBOPTION_SRV_FQDN : ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ns_nprint ( ndo , tp , tp + subopt_len ) == NULL ) goto trunc ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>?\" ) ) ; break ; } tp += subopt_len ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_AFTR_NAME : if ( optlen < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; remain_len = optlen ; ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; while ( remain_len && * tp ) { label_len = * tp ++ ; if ( label_len < remain_len - 1 ) { ( void ) fn_printn ( ndo , tp , label_len , NULL ) ; tp += label_len ; remain_len -= ( label_len + 1 ) ; if ( * tp ) ND_PRINT ( ( ndo , \".\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>?\" ) ) ; break ; } } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case DH6OPT_NEW_POSIX_TIMEZONE : case DH6OPT_NEW_TZDB_TIMEZONE : case DH6OPT_MUDURL : if ( optlen < 5 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; } tp = ( const u_char * ) ( dh6o + 1 ) ; ND_PRINT ( ( ndo , \"=\" ) ) ; ( void ) fn_printn ( ndo , tp , ( u_int ) optlen , NULL ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; default : ND_PRINT ( ( ndo , \")\" ) ) ; break ; } cp += sizeof ( * dh6o ) + optlen ; } return ; trunc : ND_PRINT ( ( ndo , \"[|dhcp6ext]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case DH6OPT_RECONF_MSG : if ( optlen != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>?)\" ) ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 int keepalived_main ( int argc , char * * argv ) { bool report_stopped = true ; struct utsname uname_buf ; char * end ; set_time_now ( ) ; save_cmd_line_options ( argc , argv ) ; debug = 0 ; # ifndef _DEBUG_ prog_type = PROG_TYPE_PARENT ; # endif # ifdef _WITH_VRRP_ __set_bit ( DAEMON_VRRP , & daemon_mode ) ; # endif # ifdef _WITH_LVS_ __set_bit ( DAEMON_CHECKERS , & daemon_mode ) ; # endif # ifdef _WITH_BFD_ __set_bit ( DAEMON_BFD , & daemon_mode ) ; <S2SV_StartBug> # endif <S2SV_EndBug> openlog ( PACKAGE_NAME , LOG_PID , log_facility ) ; # ifdef _MEM_CHECK_ mem_log_init ( PACKAGE_NAME , \"Parent<S2SV_blank>process\" ) ; # endif if ( uname ( & uname_buf ) ) log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>uname()<S2SV_blank>information<S2SV_blank>-<S2SV_blank>error<S2SV_blank>%d\" , errno ) ; else { os_major = ( unsigned ) strtoul ( uname_buf . release , & end , 10 ) ; if ( * end != '.' ) os_major = 0 ; else { os_minor = ( unsigned ) strtoul ( end + 1 , & end , 10 ) ; if ( * end != '.' ) os_major = 0 ; else { if ( ! isdigit ( end [ 1 ] ) ) os_major = 0 ; else os_release = ( unsigned ) strtoul ( end + 1 , & end , 10 ) ; } } if ( ! os_major ) log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>kernel<S2SV_blank>version<S2SV_blank>%s\" , uname_buf . release ) ; if ( ! config_id ) { end = strchrnul ( uname_buf . nodename , '.' ) ; config_id = MALLOC ( ( size_t ) ( end - uname_buf . nodename ) + 1 ) ; strncpy ( config_id , uname_buf . nodename , ( size_t ) ( end - uname_buf . nodename ) ) ; config_id [ end - uname_buf . nodename ] = '\\\\0' ; } } if ( parse_cmdline ( argc , argv ) ) { closelog ( ) ; if ( ! __test_bit ( NO_SYSLOG_BIT , & debug ) ) openlog ( PACKAGE_NAME , LOG_PID | ( ( __test_bit ( LOG_CONSOLE_BIT , & debug ) ) ? LOG_CONS : 0 ) , log_facility ) ; } if ( __test_bit ( LOG_CONSOLE_BIT , & debug ) ) enable_console_log ( ) ; # ifdef GIT_COMMIT log_message ( LOG_INFO , \"Starting<S2SV_blank>%s,<S2SV_blank>git<S2SV_blank>commit<S2SV_blank>%s\" , version_string , GIT_COMMIT ) ; # else log_message ( LOG_INFO , \"Starting<S2SV_blank>%s\" , version_string ) ; # endif core_dump_init ( ) ; if ( os_major ) { if ( KERNEL_VERSION ( os_major , os_minor , os_release ) < LINUX_VERSION_CODE ) { log_message ( LOG_INFO , \"WARNING<S2SV_blank>-<S2SV_blank>keepalived<S2SV_blank>was<S2SV_blank>build<S2SV_blank>for<S2SV_blank>newer<S2SV_blank>Linux<S2SV_blank>%d.%d.%d,<S2SV_blank>running<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\" , ( LINUX_VERSION_CODE >> 16 ) & 0xff , ( LINUX_VERSION_CODE >> 8 ) & 0xff , ( LINUX_VERSION_CODE ) & 0xff , uname_buf . sysname , uname_buf . release , uname_buf . version ) ; } else { log_message ( LOG_INFO , \"Running<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>(built<S2SV_blank>for<S2SV_blank>Linux<S2SV_blank>%d.%d.%d)\" , uname_buf . sysname , uname_buf . release , uname_buf . version , ( LINUX_VERSION_CODE >> 16 ) & 0xff , ( LINUX_VERSION_CODE >> 8 ) & 0xff , ( LINUX_VERSION_CODE ) & 0xff ) ; } } # ifndef _DEBUG_ log_command_line ( 0 ) ; # endif if ( ! check_conf_file ( conf_file ) ) { if ( __test_bit ( CONFIG_TEST_BIT , & debug ) ) config_test_exit ( ) ; goto end ; } global_data = alloc_global_data ( ) ; <S2SV_StartBug> read_config_file ( ) ; <S2SV_EndBug> init_global_data ( global_data , NULL ) ; # if HAVE_DECL_CLONE_NEWNET if ( override_namespace ) { if ( global_data -> network_namespace ) { log_message ( LOG_INFO , \"Overriding<S2SV_blank>config<S2SV_blank>net_namespace<S2SV_blank>\\'%s\\'<S2SV_blank>with<S2SV_blank>command<S2SV_blank>line<S2SV_blank>namespace<S2SV_blank>\\'%s\\'\" , global_data -> network_namespace , override_namespace ) ; FREE ( global_data -> network_namespace ) ; } global_data -> network_namespace = override_namespace ; override_namespace = NULL ; } # endif if ( ! __test_bit ( CONFIG_TEST_BIT , & debug ) && ( global_data -> instance_name # if HAVE_DECL_CLONE_NEWNET || global_data -> network_namespace # endif ) ) { if ( ( syslog_ident = make_syslog_ident ( PACKAGE_NAME ) ) ) { log_message ( LOG_INFO , \"Changing<S2SV_blank>syslog<S2SV_blank>ident<S2SV_blank>to<S2SV_blank>%s\" , syslog_ident ) ; closelog ( ) ; openlog ( syslog_ident , LOG_PID | ( ( __test_bit ( LOG_CONSOLE_BIT , & debug ) ) ? LOG_CONS : 0 ) , log_facility ) ; } else log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>change<S2SV_blank>syslog<S2SV_blank>ident\" ) ; use_pid_dir = true ; open_log_file ( log_file_name , NULL , # if HAVE_DECL_CLONE_NEWNET global_data -> network_namespace , # else NULL , # endif global_data -> instance_name ) ; } set_child_finder_name ( find_keepalived_child_name ) ; if ( ! __test_bit ( CONFIG_TEST_BIT , & debug ) ) { if ( use_pid_dir ) { create_pid_dir ( ) ; } } # if HAVE_DECL_CLONE_NEWNET if ( global_data -> network_namespace ) { if ( global_data -> network_namespace && ! set_namespaces ( global_data -> network_namespace ) ) { log_message ( LOG_ERR , \"Unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>exiting\" , global_data -> network_namespace ) ; goto end ; } } # endif if ( ! __test_bit ( CONFIG_TEST_BIT , & debug ) ) { if ( global_data -> instance_name ) { if ( ! main_pidfile && ( main_pidfile = make_pidfile_name ( KEEPALIVED_PID_DIR KEEPALIVED_PID_FILE , global_data -> instance_name , PID_EXTENSION ) ) ) free_main_pidfile = true ; # ifdef _WITH_LVS_ if ( ! checkers_pidfile && ( checkers_pidfile = make_pidfile_name ( KEEPALIVED_PID_DIR CHECKERS_PID_FILE , global_data -> instance_name , PID_EXTENSION ) ) ) free_checkers_pidfile = true ; # endif # ifdef _WITH_VRRP_ if ( ! vrrp_pidfile && ( vrrp_pidfile = make_pidfile_name ( KEEPALIVED_PID_DIR VRRP_PID_FILE , global_data -> instance_name , PID_EXTENSION ) ) ) free_vrrp_pidfile = true ; # endif # ifdef _WITH_BFD_ if ( ! bfd_pidfile && ( bfd_pidfile = make_pidfile_name ( KEEPALIVED_PID_DIR VRRP_PID_FILE , global_data -> instance_name , PID_EXTENSION ) ) ) free_bfd_pidfile = true ; # endif } if ( use_pid_dir ) { if ( ! main_pidfile ) main_pidfile = KEEPALIVED_PID_DIR KEEPALIVED_PID_FILE PID_EXTENSION ; # ifdef _WITH_LVS_ if ( ! checkers_pidfile ) checkers_pidfile = KEEPALIVED_PID_DIR CHECKERS_PID_FILE PID_EXTENSION ; # endif # ifdef _WITH_VRRP_ if ( ! vrrp_pidfile ) vrrp_pidfile = KEEPALIVED_PID_DIR VRRP_PID_FILE PID_EXTENSION ; # endif # ifdef _WITH_BFD_ if ( ! bfd_pidfile ) bfd_pidfile = KEEPALIVED_PID_DIR BFD_PID_FILE PID_EXTENSION ; # endif } else { if ( ! main_pidfile ) main_pidfile = PID_DIR KEEPALIVED_PID_FILE PID_EXTENSION ; # ifdef _WITH_LVS_ if ( ! checkers_pidfile ) checkers_pidfile = PID_DIR CHECKERS_PID_FILE PID_EXTENSION ; # endif # ifdef _WITH_VRRP_ if ( ! vrrp_pidfile ) vrrp_pidfile = PID_DIR VRRP_PID_FILE PID_EXTENSION ; # endif # ifdef _WITH_BFD_ if ( ! bfd_pidfile ) bfd_pidfile = PID_DIR BFD_PID_FILE PID_EXTENSION ; # endif } if ( keepalived_running ( daemon_mode ) ) { log_message ( LOG_INFO , \"daemon<S2SV_blank>is<S2SV_blank>already<S2SV_blank>running\" ) ; report_stopped = false ; goto end ; } } if ( ! __test_bit ( DONT_FORK_BIT , & debug ) && xdaemon ( false , false , true ) > 0 ) { closelog ( ) ; FREE_PTR ( config_id ) ; FREE_PTR ( orig_core_dump_pattern ) ; close_std_fd ( ) ; exit ( 0 ) ; } <S2SV_StartBug> umask ( 0 ) ; <S2SV_EndBug> # ifdef _MEM_CHECK_ enable_mem_log_termination ( ) ; # endif if ( __test_bit ( CONFIG_TEST_BIT , & debug ) ) { validate_config ( ) ; config_test_exit ( ) ; } if ( ! pidfile_write ( main_pidfile , getpid ( ) ) ) goto end ; master = thread_make_master ( ) ; signal_init ( ) ; if ( ! start_keepalived ( ) ) log_message ( LOG_INFO , \"Warning<S2SV_blank>-<S2SV_blank>keepalived<S2SV_blank>has<S2SV_blank>no<S2SV_blank>configuration<S2SV_blank>to<S2SV_blank>run\" ) ; initialise_debug_options ( ) ; # ifdef THREAD_DUMP register_parent_thread_addresses ( ) ; # endif launch_thread_scheduler ( master ) ; stop_keepalived ( ) ; # ifdef THREAD_DUMP deregister_thread_addresses ( ) ; # endif end : if ( report_stopped ) { # ifdef GIT_COMMIT log_message ( LOG_INFO , \"Stopped<S2SV_blank>%s,<S2SV_blank>git<S2SV_blank>commit<S2SV_blank>%s\" , version_string , GIT_COMMIT ) ; # else log_message ( LOG_INFO , \"Stopped<S2SV_blank>%s\" , version_string ) ; # endif } # if HAVE_DECL_CLONE_NEWNET if ( global_data && global_data -> network_namespace ) clear_namespaces ( ) ; # endif if ( use_pid_dir ) remove_pid_dir ( ) ; if ( orig_core_dump_pattern ) update_core_dump_pattern ( orig_core_dump_pattern ) ; free_parent_mallocs_startup ( false ) ; free_parent_mallocs_exit ( ) ; free_global_data ( global_data ) ; closelog ( ) ; # ifndef _MEM_CHECK_LOG_ FREE_PTR ( syslog_ident ) ; # else if ( syslog_ident ) free ( syslog_ident ) ; # endif close_std_fd ( ) ; exit ( KEEPALIVED_EXIT_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif umask ( 022 ) ; <S2SV_ModStart> ( ) ; global_data -> umask = umask_val ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> # ifdef _MEM_CHECK_\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13040\n\n```\nCWE-125 static int mp_capable_print ( netdissect_options * ndo , const u_char * opt , u_int opt_len , u_char flags ) { const struct mp_capable * mpc = ( const struct mp_capable * ) opt ; <S2SV_StartBug> if ( ! ( opt_len == 12 && flags & TH_SYN ) && <S2SV_EndBug> ! ( opt_len == 20 && ( flags & ( TH_SYN | TH_ACK ) ) == TH_ACK ) ) return 0 ; if ( MP_CAPABLE_OPT_VERSION ( mpc -> sub_ver ) != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>Unknown<S2SV_blank>Version<S2SV_blank>(%d)\" , MP_CAPABLE_OPT_VERSION ( mpc -> sub_ver ) ) ) ; return 1 ; } if ( mpc -> flags & MP_CAPABLE_C ) ND_PRINT ( ( ndo , \"<S2SV_blank>csum\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>{0x%\" PRIx64 , EXTRACT_64BITS ( mpc -> sender_key ) ) ) ; if ( opt_len == 20 ) ND_PRINT ( ( ndo , \",0x%\" PRIx64 , EXTRACT_64BITS ( mpc -> receiver_key ) ) ) ; ND_PRINT ( ( ndo , \"}\" ) ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 12 && ( <S2SV_ModStart> flags & TH_SYN )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_unsigned_max ( struct vp9_write_bit_buffer * wb , <S2SV_EndBug> int data , int max ) { <S2SV_StartBug> vp9_wb_write_literal ( wb , data , get_unsigned_bits ( max ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> encode_unsigned_max ( struct vpx_write_bit_buffer <S2SV_ModEnd> * wb , <S2SV_ModStart> max ) { vpx_wb_write_literal <S2SV_ModEnd> ( wb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2319\n\n```\nCWE-264 int hfsplus_rename_cat ( u32 cnid , struct inode * src_dir , struct qstr * src_name , struct inode * dst_dir , struct qstr * dst_name ) { struct super_block * sb = src_dir -> i_sb ; struct hfs_find_data src_fd , dst_fd ; hfsplus_cat_entry entry ; int entry_size , type ; int err ; dprint ( DBG_CAT_MOD , \"rename_cat:<S2SV_blank>%u<S2SV_blank>-<S2SV_blank>%lu,%s<S2SV_blank>-<S2SV_blank>%lu,%s\\\\n\" , cnid , src_dir -> i_ino , src_name -> name , dst_dir -> i_ino , dst_name -> name ) ; err = hfs_find_init ( HFSPLUS_SB ( sb ) -> cat_tree , & src_fd ) ; if ( err ) return err ; dst_fd = src_fd ; hfsplus_cat_build_key ( sb , src_fd . search_key , src_dir -> i_ino , src_name ) ; err = hfs_brec_find ( & src_fd ) ; if ( err ) goto out ; <S2SV_StartBug> hfs_bnode_read ( src_fd . bnode , & entry , src_fd . entryoffset , <S2SV_EndBug> src_fd . entrylength ) ; hfsplus_cat_build_key ( sb , dst_fd . search_key , dst_dir -> i_ino , dst_name ) ; err = hfs_brec_find ( & dst_fd ) ; if ( err != - ENOENT ) { if ( ! err ) err = - EEXIST ; goto out ; } err = hfs_brec_insert ( & dst_fd , & entry , src_fd . entrylength ) ; if ( err ) goto out ; dst_dir -> i_size ++ ; dst_dir -> i_mtime = dst_dir -> i_ctime = CURRENT_TIME_SEC ; hfsplus_cat_build_key ( sb , src_fd . search_key , src_dir -> i_ino , src_name ) ; err = hfs_brec_find ( & src_fd ) ; if ( err ) goto out ; err = hfs_brec_remove ( & src_fd ) ; if ( err ) goto out ; src_dir -> i_size -- ; src_dir -> i_mtime = src_dir -> i_ctime = CURRENT_TIME_SEC ; hfsplus_cat_build_key ( sb , src_fd . search_key , cnid , NULL ) ; err = hfs_brec_find ( & src_fd ) ; if ( err ) goto out ; type = hfs_bnode_read_u16 ( src_fd . bnode , src_fd . entryoffset ) ; err = hfs_brec_remove ( & src_fd ) ; if ( err ) goto out ; hfsplus_cat_build_key ( sb , dst_fd . search_key , cnid , NULL ) ; entry_size = hfsplus_fill_cat_thread ( sb , & entry , type , dst_dir -> i_ino , dst_name ) ; err = hfs_brec_find ( & dst_fd ) ; if ( err != - ENOENT ) { if ( ! err ) err = - EEXIST ; goto out ; } err = hfs_brec_insert ( & dst_fd , & entry , entry_size ) ; hfsplus_mark_inode_dirty ( dst_dir , HFSPLUS_I_CAT_DIRTY ) ; hfsplus_mark_inode_dirty ( src_dir , HFSPLUS_I_CAT_DIRTY ) ; out : hfs_bnode_put ( dst_fd . bnode ) ; hfs_find_exit ( & src_fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; if ( src_fd . entrylength > sizeof ( entry ) || src_fd . entrylength < 0 ) { err = - EIO ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16932\n\n```\nCWE-835 void xmlParsePEReference ( xmlParserCtxtPtr ctxt ) { const xmlChar * name ; xmlEntityPtr entity = NULL ; xmlParserInputPtr input ; if ( RAW != '%' ) return ; NEXT ; name = xmlParseName ( ctxt ) ; if ( name == NULL ) { xmlFatalErrMsg ( ctxt , XML_ERR_PEREF_NO_NAME , \"PEReference:<S2SV_blank>no<S2SV_blank>name\\\\n\" ) ; return ; } if ( xmlParserDebugEntities ) xmlGenericError ( xmlGenericErrorContext , \"PEReference:<S2SV_blank>%s\\\\n\" , name ) ; if ( RAW != ';' ) { xmlFatalErr ( ctxt , XML_ERR_PEREF_SEMICOL_MISSING , NULL ) ; return ; } NEXT ; ctxt -> nbentities ++ ; if ( ( ctxt -> sax != NULL ) && ( ctxt -> sax -> getParameterEntity != NULL ) ) entity = ctxt -> sax -> getParameterEntity ( ctxt -> userData , name ) ; if ( ctxt -> instate == XML_PARSER_EOF ) return ; if ( entity == NULL ) { if ( ( ctxt -> standalone == 1 ) || ( ( ctxt -> hasExternalSubset == 0 ) && ( ctxt -> hasPErefs == 0 ) ) ) { xmlFatalErrMsgStr ( ctxt , XML_ERR_UNDECLARED_ENTITY , \"PEReference:<S2SV_blank>%%%s;<S2SV_blank>not<S2SV_blank>found\\\\n\" , name ) ; } else { if ( ( ctxt -> validate ) && ( ctxt -> vctxt . error != NULL ) ) { xmlValidityError ( ctxt , XML_WAR_UNDECLARED_ENTITY , \"PEReference:<S2SV_blank>%%%s;<S2SV_blank>not<S2SV_blank>found\\\\n\" , name , NULL ) ; } else xmlWarningMsg ( ctxt , XML_WAR_UNDECLARED_ENTITY , \"PEReference:<S2SV_blank>%%%s;<S2SV_blank>not<S2SV_blank>found\\\\n\" , name , NULL ) ; ctxt -> valid = 0 ; } xmlParserEntityCheck ( ctxt , 0 , NULL , 0 ) ; } else { if ( ( entity -> etype != XML_INTERNAL_PARAMETER_ENTITY ) && ( entity -> etype != XML_EXTERNAL_PARAMETER_ENTITY ) ) { xmlWarningMsg ( ctxt , XML_WAR_UNDECLARED_ENTITY , \"Internal:<S2SV_blank>%%%s;<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>parameter<S2SV_blank>entity\\\\n\" , name , NULL ) ; } else { xmlChar start [ 4 ] ; xmlCharEncoding enc ; if ( ( entity -> etype == XML_EXTERNAL_PARAMETER_ENTITY ) && ( ( ctxt -> options & XML_PARSE_NOENT ) == 0 ) && ( ( ctxt -> options & XML_PARSE_DTDVALID ) == 0 ) && ( ( ctxt -> options & XML_PARSE_DTDLOAD ) == 0 ) && ( ( ctxt -> options & XML_PARSE_DTDATTR ) == 0 ) && ( ctxt -> replaceEntities == 0 ) && ( ctxt -> validate == 0 ) ) return ; input = xmlNewEntityInputStream ( ctxt , entity ) ; <S2SV_StartBug> if ( xmlPushInput ( ctxt , input ) < 0 ) <S2SV_EndBug> return ; if ( entity -> etype == XML_EXTERNAL_PARAMETER_ENTITY ) { GROW if ( ctxt -> instate == XML_PARSER_EOF ) return ; if ( ( ctxt -> input -> end - ctxt -> input -> cur ) >= 4 ) { start [ 0 ] = RAW ; start [ 1 ] = NXT ( 1 ) ; start [ 2 ] = NXT ( 2 ) ; start [ 3 ] = NXT ( 3 ) ; enc = xmlDetectCharEncoding ( start , 4 ) ; if ( enc != XML_CHAR_ENCODING_NONE ) { xmlSwitchEncoding ( ctxt , enc ) ; } } if ( ( CMP5 ( CUR_PTR , '<' , '?' , 'x' , 'm' , 'l' ) ) && ( IS_BLANK_CH ( NXT ( 5 ) ) ) ) { xmlParseTextDecl ( ctxt ) ; } } } } ctxt -> hasPErefs = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) { xmlFreeInputStream ( input ) ; return ; } <S2SV_ModEnd> if ( entity\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3722\n\n```\nCWE-835 int lookup ( struct sip_msg * _m , char * _t , char * _f , char * _s ) { unsigned int flags ; urecord_t * r ; str aor , uri ; ucontact_t * ptr , * it ; int res ; int ret ; str path_dst ; str flags_s ; pv_value_t val ; int_str istr ; str sip_instance = { 0 , 0 } , call_id = { 0 , 0 } ; flags = 0 ; if ( _f && _f [ 0 ] != 0 ) { if ( fixup_get_svalue ( _m , ( gparam_p ) _f , & flags_s ) != 0 ) { LM_ERR ( \"invalid<S2SV_blank>owner<S2SV_blank>uri<S2SV_blank>parameter\" ) ; return - 1 ; } for ( res = 0 ; res < flags_s . len ; res ++ ) { switch ( flags_s . s [ res ] ) { case 'm' : flags |= REG_LOOKUP_METHODFILTER_FLAG ; break ; case 'b' : flags |= REG_LOOKUP_NOBRANCH_FLAG ; break ; default : LM_WARN ( \"unsuported<S2SV_blank>flag<S2SV_blank>%c<S2SV_blank>\\\\n\" , flags_s . s [ res ] ) ; } } } if ( _s ) { if ( pv_get_spec_value ( _m , ( pv_spec_p ) _s , & val ) != 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>PV<S2SV_blank>value\\\\n\" ) ; return - 1 ; } if ( ( val . flags & PV_VAL_STR ) == 0 ) { LM_ERR ( \"PV<S2SV_blank>vals<S2SV_blank>is<S2SV_blank>not<S2SV_blank>string\\\\n\" ) ; return - 1 ; } uri = val . rs ; } else { if ( _m -> new_uri . s ) uri = _m -> new_uri ; else uri = _m -> first_line . u . request . uri ; } if ( extract_aor ( & uri , & aor , & sip_instance , & call_id ) < 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>extract<S2SV_blank>address<S2SV_blank>of<S2SV_blank>record\\\\n\" ) ; return - 3 ; } get_act_time ( ) ; ul . lock_udomain ( ( udomain_t * ) _t , & aor ) ; res = ul . get_urecord ( ( udomain_t * ) _t , & aor , & r ) ; if ( res > 0 ) { LM_DBG ( \"\\'%.*s\\'<S2SV_blank>Not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>usrloc\\\\n\" , aor . len , ZSW ( aor . s ) ) ; ul . unlock_udomain ( ( udomain_t * ) _t , & aor ) ; return - 1 ; } ptr = r -> contacts ; ret = - 1 ; search_valid_contact : while ( ( ptr ) && ! ( VALID_CONTACT ( ptr , act_time ) && ( ret = - 2 ) && allowed_method ( _m , ptr , flags ) ) ) ptr = ptr -> next ; if ( ptr == 0 ) { LM_DBG ( \"nothing<S2SV_blank>found<S2SV_blank>!\\\\n\" ) ; goto done ; } if ( sip_instance . len && sip_instance . s ) { LM_DBG ( \"ruri<S2SV_blank>has<S2SV_blank>gruu<S2SV_blank>in<S2SV_blank>lookup\\\\n\" ) ; if ( ptr -> instance . len - 2 != sip_instance . len || memcmp ( ptr -> instance . s + 1 , sip_instance . s , sip_instance . len ) ) { LM_DBG ( \"no<S2SV_blank>match<S2SV_blank>to<S2SV_blank>sip<S2SV_blank>instace<S2SV_blank>-<S2SV_blank>[%.*s]<S2SV_blank>-<S2SV_blank>[%.*s]\\\\n\" , ptr -> instance . len - 2 , ptr -> instance . s + 1 , sip_instance . len , sip_instance . s ) ; ptr = ptr -> next ; goto search_valid_contact ; } LM_DBG ( \"matched<S2SV_blank>sip<S2SV_blank>instace\\\\n\" ) ; } if ( call_id . len && call_id . s ) { if ( ptr -> callid . len != call_id . len || memcmp ( ptr -> callid . s , call_id . s , call_id . len ) ) { LM_DBG ( \"no<S2SV_blank>match<S2SV_blank>to<S2SV_blank>call<S2SV_blank>id<S2SV_blank>-<S2SV_blank>[%.*s]<S2SV_blank>-<S2SV_blank>[%.*s]\\\\n\" , ptr -> callid . len , ptr -> callid . s , call_id . len , call_id . s ) ; ptr = ptr -> next ; goto search_valid_contact ; } it = ptr -> next ; while ( it ) { if ( VALID_CONTACT ( it , act_time ) ) { if ( it -> instance . len - 2 == sip_instance . len && memcmp ( it -> instance . s + 1 , sip_instance . s , sip_instance . len ) == 0 ) if ( it -> last_modified > ptr -> last_modified ) { break ; } } <S2SV_StartBug> } <S2SV_EndBug> if ( it != NULL ) { ret = - 1 ; goto done ; } } LM_DBG ( \"found<S2SV_blank>a<S2SV_blank>complete<S2SV_blank>match\\\\n\" ) ; ret = 1 ; if ( ptr ) { LM_DBG ( \"setting<S2SV_blank>as<S2SV_blank>ruri<S2SV_blank><%.*s>\\\\n\" , ptr -> c . len , ptr -> c . s ) ; if ( set_ruri ( _m , & ptr -> c ) < 0 ) { LM_ERR ( \"unable<S2SV_blank>to<S2SV_blank>rewrite<S2SV_blank>Request-URI\\\\n\" ) ; ret = - 3 ; goto done ; } if ( ptr -> path . s && ptr -> path . len ) { if ( get_path_dst_uri ( & ptr -> path , & path_dst ) < 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>dst_uri<S2SV_blank>for<S2SV_blank>Path\\\\n\" ) ; ret = - 3 ; goto done ; } if ( set_path_vector ( _m , & ptr -> path ) < 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>path<S2SV_blank>vector\\\\n\" ) ; ret = - 3 ; goto done ; } if ( set_dst_uri ( _m , & path_dst ) < 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>dst_uri<S2SV_blank>of<S2SV_blank>Path\\\\n\" ) ; ret = - 3 ; goto done ; } } else if ( ptr -> received . s && ptr -> received . len ) { if ( set_dst_uri ( _m , & ptr -> received ) < 0 ) { ret = - 3 ; goto done ; } } set_ruri_q ( ptr -> q ) ; setbflag ( 0 , ptr -> cflags ) ; if ( ptr -> sock ) _m -> force_send_socket = ptr -> sock ; if ( attr_avp_name != - 1 ) { istr . s = ptr -> attr ; if ( add_avp_last ( AVP_VAL_STR , attr_avp_name , istr ) != 0 ) { LM_ERR ( \"Failed<S2SV_blank>to<S2SV_blank>populate<S2SV_blank>attr<S2SV_blank>avp!\\\\n\" ) ; } } ptr = ptr -> next ; } if ( flags & REG_LOOKUP_NOBRANCH_FLAG || ( sip_instance . len && sip_instance . s ) ) goto done ; LM_DBG ( \"looking<S2SV_blank>for<S2SV_blank>branches\\\\n\" ) ; for ( ; ptr ; ptr = ptr -> next ) { if ( VALID_CONTACT ( ptr , act_time ) && allowed_method ( _m , ptr , flags ) ) { path_dst . len = 0 ; if ( ptr -> path . s && ptr -> path . len && get_path_dst_uri ( & ptr -> path , & path_dst ) < 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>dst_uri<S2SV_blank>for<S2SV_blank>Path\\\\n\" ) ; continue ; } LM_DBG ( \"setting<S2SV_blank>branch<S2SV_blank><%.*s>\\\\n\" , ptr -> c . len , ptr -> c . s ) ; if ( append_branch ( _m , & ptr -> c , path_dst . len ? & path_dst : & ptr -> received , & ptr -> path , ptr -> q , ptr -> cflags , ptr -> sock ) == - 1 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>append<S2SV_blank>a<S2SV_blank>branch\\\\n\" ) ; continue ; } if ( attr_avp_name != - 1 ) { istr . s = ptr -> attr ; if ( add_avp_last ( AVP_VAL_STR , attr_avp_name , istr ) != 0 ) { LM_ERR ( \"Failed<S2SV_blank>to<S2SV_blank>populate<S2SV_blank>attr<S2SV_blank>avp!\\\\n\" ) ; } } } } done : ul . release_urecord ( r ) ; ul . unlock_udomain ( ( udomain_t * ) _t , & aor ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } it = it -> next ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13026\n\n```\nCWE-125 static int isis_print_mt_port_cap_subtlv ( netdissect_options * ndo , const uint8_t * tptr , int len ) { int stlv_type , stlv_len ; const struct isis_subtlv_spb_mcid * subtlv_spb_mcid ; int i ; while ( len > 2 ) { <S2SV_StartBug> stlv_type = * ( tptr ++ ) ; <S2SV_EndBug> stlv_len = * ( tptr ++ ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>subTLV<S2SV_blank>#%u,<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( isis_mt_port_cap_subtlv_values , \"unknown\" , stlv_type ) , stlv_type , stlv_len ) ) ; <S2SV_StartBug> len = len - 2 ; <S2SV_EndBug> switch ( stlv_type ) { case ISIS_SUBTLV_SPB_MCID : { <S2SV_StartBug> ND_TCHECK2 ( * ( tptr ) , ISIS_SUBTLV_SPB_MCID_MIN_LEN ) ; <S2SV_EndBug> subtlv_spb_mcid = ( const struct isis_subtlv_spb_mcid * ) tptr ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MCID:<S2SV_blank>\" ) ) ; isis_print_mcid ( ndo , & ( subtlv_spb_mcid -> mcid ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AUX-MCID:<S2SV_blank>\" ) ) ; isis_print_mcid ( ndo , & ( subtlv_spb_mcid -> aux_mcid ) ) ; <S2SV_StartBug> tptr = tptr + sizeof ( struct isis_subtlv_spb_mcid ) ; <S2SV_EndBug> len = len - sizeof ( struct isis_subtlv_spb_mcid ) ; break ; } case ISIS_SUBTLV_SPB_DIGEST : { <S2SV_StartBug> ND_TCHECK2 ( * ( tptr ) , ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d<S2SV_blank>V:<S2SV_blank>%d<S2SV_blank>A:<S2SV_blank>%d<S2SV_blank>D:<S2SV_blank>%d\" , ( * ( tptr ) >> 5 ) , ( ( ( * tptr ) >> 4 ) & 0x01 ) , ( ( * ( tptr ) >> 2 ) & 0x03 ) , ( ( * tptr ) & 0x03 ) ) ) ; tptr ++ ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Digest:<S2SV_blank>\" ) ) ; for ( i = 1 ; i <= 8 ; i ++ ) { ND_PRINT ( ( ndo , \"%08x<S2SV_blank>\" , EXTRACT_32BITS ( tptr ) ) ) ; if ( i % 4 == 0 && i != 8 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; tptr = tptr + 4 ; } len = len - ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ; <S2SV_StartBug> break ; <S2SV_EndBug> } case ISIS_SUBTLV_SPB_BVID : { <S2SV_StartBug> ND_TCHECK2 ( * ( tptr ) , stlv_len ) ; <S2SV_EndBug> while ( len >= ISIS_SUBTLV_SPB_BVID_MIN_LEN ) { <S2SV_StartBug> ND_TCHECK2 ( * ( tptr ) , ISIS_SUBTLV_SPB_BVID_MIN_LEN ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ECT:<S2SV_blank>%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr = tptr + 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>BVID:<S2SV_blank>%d,<S2SV_blank>U:%01x<S2SV_blank>M:%01x<S2SV_blank>\" , ( EXTRACT_16BITS ( tptr ) >> 4 ) , ( EXTRACT_16BITS ( tptr ) >> 3 ) & 0x01 , ( EXTRACT_16BITS ( tptr ) >> 2 ) & 0x01 ) ) ; tptr = tptr + 2 ; len = len - ISIS_SUBTLV_SPB_BVID_MIN_LEN ; <S2SV_StartBug> } <S2SV_EndBug> break ; } default : break ; } <S2SV_StartBug> } <S2SV_EndBug> return 0 ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) { ND_TCHECK2 ( * tptr , 2 ) ; <S2SV_ModStart> len - 2 ; if ( len < stlv_len ) goto trunc ; ND_TCHECK2 ( * ( tptr ) , stlv_len ) <S2SV_ModStart> ISIS_SUBTLV_SPB_MCID : { if ( stlv_len < ISIS_SUBTLV_SPB_MCID_MIN_LEN ) goto trunc <S2SV_ModEnd> ; subtlv_spb_mcid = <S2SV_ModStart> = tptr + ISIS_SUBTLV_SPB_MCID_MIN_LEN ; len = len - ISIS_SUBTLV_SPB_MCID_MIN_LEN ; stlv_len = stlv_len - ISIS_SUBTLV_SPB_MCID_MIN_LEN <S2SV_ModEnd> ; break ; <S2SV_ModStart> ISIS_SUBTLV_SPB_DIGEST : { if ( stlv_len < ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ) goto trunc <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> - ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ; stlv_len = stlv_len - ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ; <S2SV_ModStart> ISIS_SUBTLV_SPB_BVID : { while ( stlv_len <S2SV_ModEnd> >= ISIS_SUBTLV_SPB_BVID_MIN_LEN ) <S2SV_ModStart> ISIS_SUBTLV_SPB_BVID_MIN_LEN ) { <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> - ISIS_SUBTLV_SPB_BVID_MIN_LEN ; stlv_len = stlv_len - ISIS_SUBTLV_SPB_BVID_MIN_LEN ; <S2SV_ModStart> break ; } tptr += stlv_len ; len -= stlv_len ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16529\n\n```\nCWE-125 static int snd_usb_create_streams ( struct snd_usb_audio * chip , int ctrlif ) { struct usb_device * dev = chip -> dev ; struct usb_host_interface * host_iface ; struct usb_interface_descriptor * altsd ; void * control_header ; <S2SV_StartBug> int i , protocol ; <S2SV_EndBug> host_iface = & usb_ifnum_to_if ( dev , ctrlif ) -> altsetting [ 0 ] ; control_header = snd_usb_find_csint_desc ( host_iface -> extra , host_iface -> extralen , NULL , UAC_HEADER ) ; altsd = get_iface_desc ( host_iface ) ; protocol = altsd -> bInterfaceProtocol ; if ( ! control_header ) { dev_err ( & dev -> dev , \"cannot<S2SV_blank>find<S2SV_blank>UAC_HEADER\\\\n\" ) ; return - EINVAL ; } <S2SV_StartBug> switch ( protocol ) { <S2SV_EndBug> default : dev_warn ( & dev -> dev , \"unknown<S2SV_blank>interface<S2SV_blank>protocol<S2SV_blank>%#02x,<S2SV_blank>assuming<S2SV_blank>v1\\\\n\" , protocol ) ; case UAC_VERSION_1 : { struct uac1_ac_header_descriptor * h1 = control_header ; <S2SV_StartBug> if ( ! h1 -> bInCollection ) { <S2SV_EndBug> <S2SV_StartBug> dev_info ( & dev -> dev , \"skipping<S2SV_blank>empty<S2SV_blank>audio<S2SV_blank>interface<S2SV_blank>(v1)\\\\n\" ) ; <S2SV_EndBug> return - EINVAL ; } if ( h1 -> bLength < sizeof ( * h1 ) + h1 -> bInCollection ) { dev_err ( & dev -> dev , \"invalid<S2SV_blank>UAC_HEADER<S2SV_blank>(v1)\\\\n\" ) ; return - EINVAL ; } for ( i = 0 ; i < h1 -> bInCollection ; i ++ ) snd_usb_create_stream ( chip , ctrlif , h1 -> baInterfaceNr [ i ] ) ; break ; } case UAC_VERSION_2 : { struct usb_interface_assoc_descriptor * assoc = usb_ifnum_to_if ( dev , ctrlif ) -> intf_assoc ; if ( ! assoc ) { struct usb_interface * iface = usb_ifnum_to_if ( dev , ctrlif + 1 ) ; if ( iface && iface -> intf_assoc && iface -> intf_assoc -> bFunctionClass == USB_CLASS_AUDIO && iface -> intf_assoc -> bFunctionProtocol == UAC_VERSION_2 ) assoc = iface -> intf_assoc ; } if ( ! assoc ) { dev_err ( & dev -> dev , \"Audio<S2SV_blank>class<S2SV_blank>v2<S2SV_blank>interfaces<S2SV_blank>need<S2SV_blank>an<S2SV_blank>interface<S2SV_blank>association\\\\n\" ) ; return - EINVAL ; } for ( i = 0 ; i < assoc -> bInterfaceCount ; i ++ ) { int intf = assoc -> bFirstInterface + i ; if ( intf != ctrlif ) snd_usb_create_stream ( chip , ctrlif , intf ) ; } break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i , protocol ; int rest_bytes <S2SV_ModStart> EINVAL ; } rest_bytes = ( void * ) ( host_iface -> extra + host_iface -> extralen ) - control_header ; if ( rest_bytes <= 0 ) { dev_err ( & dev -> dev , \"invalid<S2SV_blank>control<S2SV_blank>header\\\\n\" ) ; return - EINVAL ; } <S2SV_ModStart> ; if ( rest_bytes < sizeof ( * h1 ) ) { dev_err ( & dev -> dev , \"too<S2SV_blank>short<S2SV_blank>v1<S2SV_blank>buffer<S2SV_blank>descriptor\\\\n\" ) ; return - EINVAL ; } if ( <S2SV_ModStart> dev , \"skipping<S2SV_blank>empty<S2SV_blank>audio<S2SV_blank>interface<S2SV_blank>(v1)\\\\n\" ) ; return - EINVAL ; } if ( rest_bytes < h1 -> bLength ) { dev_err ( & dev -> dev , \"invalid<S2SV_blank>buffer<S2SV_blank>length<S2SV_blank>(v1)\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-862(缺少授权)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17807\n\n```\nCWE-862 static struct key * construct_key_and_link ( struct keyring_search_context * ctx , const char * callout_info , size_t callout_len , void * aux , struct key * dest_keyring , unsigned long flags ) { struct key_user * user ; struct key * key ; int ret ; kenter ( \"\" ) ; if ( ctx -> index_key . type == & key_type_keyring ) return ERR_PTR ( - EPERM ) ; <S2SV_StartBug> user = key_user_lookup ( current_fsuid ( ) ) ; <S2SV_EndBug> if ( ! user ) <S2SV_StartBug> return ERR_PTR ( - ENOMEM ) ; <S2SV_EndBug> construct_get_dest_keyring ( & dest_keyring ) ; ret = construct_alloc_key ( ctx , dest_keyring , flags , user , & key ) ; key_user_put ( user ) ; if ( ret == 0 ) { ret = construct_key ( key , callout_info , callout_len , aux , dest_keyring ) ; if ( ret < 0 ) { kdebug ( \"cons<S2SV_blank>failed\" ) ; goto construction_failed ; } } else if ( ret == - EINPROGRESS ) { ret = 0 ; } else { <S2SV_StartBug> goto couldnt_alloc_key ; <S2SV_EndBug> } key_put ( dest_keyring ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>key<S2SV_blank>%d\" , key_serial ( key ) ) ; return key ; construction_failed : key_negate_and_link ( key , key_negative_timeout , NULL , NULL ) ; key_put ( key ) ; <S2SV_StartBug> couldnt_alloc_key : <S2SV_EndBug> <S2SV_StartBug> key_put ( dest_keyring ) ; <S2SV_EndBug> kleave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EPERM ) ; ret = construct_get_dest_keyring ( & dest_keyring ) ; if ( ret ) goto error ; <S2SV_ModStart> ! user ) { ret = - ENOMEM ; goto error_put_dest_keyring ; } <S2SV_ModEnd> ret = construct_alloc_key <S2SV_ModStart> else { goto error_put_dest_keyring <S2SV_ModEnd> ; } key_put <S2SV_ModStart> key ) ; error_put_dest_keyring <S2SV_ModEnd> : key_put ( <S2SV_ModStart> dest_keyring ) ; error :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void rd_auto_partition_range ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_StartBug> int mi_row , int mi_col , <S2SV_EndBug> BLOCK_SIZE * min_block_size , BLOCK_SIZE * max_block_size ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> <S2SV_StartBug> MODE_INFO * * mi_8x8 = xd -> mi ; <S2SV_EndBug> <S2SV_StartBug> const int left_in_image = xd -> left_available && mi_8x8 [ - 1 ] ; <S2SV_EndBug> const int above_in_image = xd -> up_available && <S2SV_StartBug> mi_8x8 [ - xd -> mi_stride ] ; <S2SV_EndBug> <S2SV_StartBug> MODE_INFO * * above_sb64_mi_8x8 ; <S2SV_EndBug> MODE_INFO * * left_sb64_mi_8x8 ; int row8x8_remaining = tile -> mi_row_end - mi_row ; <S2SV_StartBug> int col8x8_remaining = tile -> mi_col_end - mi_col ; <S2SV_EndBug> int bh , bw ; BLOCK_SIZE min_size = BLOCK_4X4 ; <S2SV_StartBug> BLOCK_SIZE max_size = BLOCK_64X64 ; <S2SV_EndBug> if ( left_in_image || above_in_image || cm -> frame_type != KEY_FRAME ) { min_size = BLOCK_64X64 ; max_size = BLOCK_4X4 ; if ( cm -> frame_type != KEY_FRAME ) { <S2SV_StartBug> MODE_INFO * * const prev_mi = <S2SV_EndBug> & cm -> prev_mi_grid_visible [ mi_row * xd -> mi_stride + mi_col ] ; <S2SV_StartBug> get_sb_partition_size_range ( cpi , prev_mi , & min_size , & max_size ) ; <S2SV_EndBug> } if ( left_in_image ) { <S2SV_StartBug> left_sb64_mi_8x8 = & mi_8x8 [ - MI_BLOCK_SIZE ] ; <S2SV_EndBug> <S2SV_StartBug> get_sb_partition_size_range ( cpi , left_sb64_mi_8x8 , <S2SV_EndBug> & min_size , & max_size ) ; } if ( above_in_image ) { <S2SV_StartBug> above_sb64_mi_8x8 = & mi_8x8 [ - xd -> mi_stride * MI_BLOCK_SIZE ] ; <S2SV_EndBug> <S2SV_StartBug> get_sb_partition_size_range ( cpi , above_sb64_mi_8x8 , <S2SV_EndBug> & min_size , & max_size ) ; } if ( cpi -> sf . auto_min_max_partition_size == RELAXED_NEIGHBORING_MIN_MAX ) { min_size = min_partition_size [ min_size ] ; max_size = max_partition_size [ max_size ] ; } } max_size = find_partition_size ( max_size , row8x8_remaining , col8x8_remaining , & bh , & bw ) ; <S2SV_StartBug> min_size = MIN ( min_size , max_size ) ; <S2SV_EndBug> if ( cpi -> sf . use_square_partition_only && next_square_size [ max_size ] < min_size ) { min_size = next_square_size [ max_size ] ; } * min_block_size = min_size ; * max_block_size = max_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const tile , MACROBLOCKD * const xd , <S2SV_ModStart> -> common ; <S2SV_ModEnd> MODE_INFO * * <S2SV_ModStart> MODE_INFO * * mi <S2SV_ModEnd> = xd -> <S2SV_ModStart> -> left_available && mi <S2SV_ModEnd> [ - 1 <S2SV_ModStart> -> up_available && mi <S2SV_ModEnd> [ - xd <S2SV_ModStart> mi_stride ] ; const <S2SV_ModEnd> int row8x8_remaining = <S2SV_ModStart> - mi_row ; const <S2SV_ModStart> max_size = BLOCK_64X64 ; int bs_hist [ BLOCK_SIZES ] = { 0 } <S2SV_ModStart> MODE_INFO * * <S2SV_ModEnd> prev_mi = & <S2SV_ModStart> ; get_sb_partition_size_range ( xd <S2SV_ModEnd> , prev_mi , <S2SV_ModStart> , & max_size , bs_hist <S2SV_ModStart> left_in_image ) { MODE_INFO * * left_sb64_mi = & mi <S2SV_ModEnd> [ - MI_BLOCK_SIZE <S2SV_ModStart> ; get_sb_partition_size_range ( xd , left_sb64_mi , & min_size , & max_size , bs_hist <S2SV_ModEnd> ) ; } <S2SV_ModStart> above_in_image ) { MODE_INFO * * above_sb64_mi = & mi <S2SV_ModEnd> [ - xd <S2SV_ModStart> ; get_sb_partition_size_range ( xd , above_sb64_mi , & min_size , & max_size , bs_hist <S2SV_ModEnd> ) ; } <S2SV_ModStart> bw ) ; if ( vp9_active_edge_sb ( cpi , mi_row , mi_col ) ) { min_size = BLOCK_4X4 ; } else { <S2SV_ModStart> = MIN ( cpi -> sf . rd_auto_partition_min_limit , MIN ( min_size , max_size ) ) ; } <S2SV_ModEnd> if ( cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 void init_global_keywords ( bool global_active ) { install_keyword_root ( \"linkbeat_use_polling\" , use_polling_handler , global_active ) ; # if HAVE_DECL_CLONE_NEWNET install_keyword_root ( \"net_namespace\" , & net_namespace_handler , global_active ) ; install_keyword_root ( \"namespace_with_ipsets\" , & namespace_ipsets_handler , global_active ) ; # endif install_keyword_root ( \"use_pid_dir\" , & use_pid_dir_handler , global_active ) ; install_keyword_root ( \"instance\" , & instance_handler , global_active ) ; install_keyword_root ( \"child_wait_time\" , & child_wait_handler , global_active ) ; install_keyword_root ( \"global_defs\" , NULL , global_active ) ; install_keyword ( \"router_id\" , & routerid_handler ) ; install_keyword ( \"notification_email_from\" , & emailfrom_handler ) ; install_keyword ( \"smtp_server\" , & smtpserver_handler ) ; install_keyword ( \"smtp_helo_name\" , & smtphelo_handler ) ; install_keyword ( \"smtp_connect_timeout\" , & smtpto_handler ) ; install_keyword ( \"notification_email\" , & email_handler ) ; install_keyword ( \"smtp_alert\" , & smtp_alert_handler ) ; # ifdef _WITH_VRRP_ install_keyword ( \"smtp_alert_vrrp\" , & smtp_alert_vrrp_handler ) ; # endif # ifdef _WITH_LVS_ install_keyword ( \"smtp_alert_checker\" , & smtp_alert_checker_handler ) ; # endif # ifdef _WITH_VRRP_ install_keyword ( \"dynamic_interfaces\" , & dynamic_interfaces_handler ) ; install_keyword ( \"no_email_faults\" , & no_email_faults_handler ) ; install_keyword ( \"default_interface\" , & default_interface_handler ) ; # endif # ifdef _WITH_LVS_ install_keyword ( \"lvs_timeouts\" , & lvs_timeouts ) ; install_keyword ( \"lvs_flush\" , & lvs_flush_handler ) ; # ifdef _WITH_VRRP_ install_keyword ( \"lvs_sync_daemon\" , & lvs_syncd_handler ) ; # endif # endif # ifdef _WITH_VRRP_ install_keyword ( \"vrrp_mcast_group4\" , & vrrp_mcast_group4_handler ) ; install_keyword ( \"vrrp_mcast_group6\" , & vrrp_mcast_group6_handler ) ; install_keyword ( \"vrrp_garp_master_delay\" , & vrrp_garp_delay_handler ) ; install_keyword ( \"vrrp_garp_master_repeat\" , & vrrp_garp_rep_handler ) ; install_keyword ( \"vrrp_garp_master_refresh\" , & vrrp_garp_refresh_handler ) ; install_keyword ( \"vrrp_garp_master_refresh_repeat\" , & vrrp_garp_refresh_rep_handler ) ; install_keyword ( \"vrrp_garp_lower_prio_delay\" , & vrrp_garp_lower_prio_delay_handler ) ; install_keyword ( \"vrrp_garp_lower_prio_repeat\" , & vrrp_garp_lower_prio_rep_handler ) ; install_keyword ( \"vrrp_garp_interval\" , & vrrp_garp_interval_handler ) ; install_keyword ( \"vrrp_gna_interval\" , & vrrp_gna_interval_handler ) ; install_keyword ( \"vrrp_lower_prio_no_advert\" , & vrrp_lower_prio_no_advert_handler ) ; install_keyword ( \"vrrp_higher_prio_send_advert\" , & vrrp_higher_prio_send_advert_handler ) ; install_keyword ( \"vrrp_version\" , & vrrp_version_handler ) ; install_keyword ( \"vrrp_iptables\" , & vrrp_iptables_handler ) ; # ifdef _HAVE_LIBIPSET_ install_keyword ( \"vrrp_ipsets\" , & vrrp_ipsets_handler ) ; # endif install_keyword ( \"vrrp_check_unicast_src\" , & vrrp_check_unicast_src_handler ) ; install_keyword ( \"vrrp_skip_check_adv_addr\" , & vrrp_check_adv_addr_handler ) ; install_keyword ( \"vrrp_strict\" , & vrrp_strict_handler ) ; install_keyword ( \"vrrp_priority\" , & vrrp_prio_handler ) ; install_keyword ( \"vrrp_no_swap\" , & vrrp_no_swap_handler ) ; # ifdef _HAVE_SCHED_RT_ install_keyword ( \"vrrp_rt_priority\" , & vrrp_rt_priority_handler ) ; # if HAVE_DECL_RLIMIT_RTTIME == 1 install_keyword ( \"vrrp_rlimit_rtime\" , & vrrp_rt_rlimit_handler ) ; # endif # endif # endif install_keyword ( \"notify_fifo\" , & global_notify_fifo ) ; install_keyword ( \"notify_fifo_script\" , & global_notify_fifo_script ) ; # ifdef _WITH_VRRP_ install_keyword ( \"vrrp_notify_fifo\" , & vrrp_notify_fifo ) ; install_keyword ( \"vrrp_notify_fifo_script\" , & vrrp_notify_fifo_script ) ; # endif # ifdef _WITH_LVS_ install_keyword ( \"lvs_notify_fifo\" , & lvs_notify_fifo ) ; install_keyword ( \"lvs_notify_fifo_script\" , & lvs_notify_fifo_script ) ; install_keyword ( \"checker_priority\" , & checker_prio_handler ) ; install_keyword ( \"checker_no_swap\" , & checker_no_swap_handler ) ; # ifdef _HAVE_SCHED_RT_ install_keyword ( \"checker_rt_priority\" , & checker_rt_priority_handler ) ; # if HAVE_DECL_RLIMIT_RTTIME == 1 install_keyword ( \"checker_rlimit_rtime\" , & checker_rt_rlimit_handler ) ; # endif # endif # endif # ifdef _WITH_BFD_ install_keyword ( \"bfd_priority\" , & bfd_prio_handler ) ; install_keyword ( \"bfd_no_swap\" , & bfd_no_swap_handler ) ; # ifdef _HAVE_SCHED_RT_ install_keyword ( \"bfd_rt_priority\" , & bfd_rt_priority_handler ) ; # if HAVE_DECL_RLIMIT_RTTIME == 1 install_keyword ( \"bfd_rlimit_rtime\" , & bfd_rt_rlimit_handler ) ; # endif # endif # endif # ifdef _WITH_SNMP_ install_keyword ( \"snmp_socket\" , & snmp_socket_handler ) ; install_keyword ( \"enable_traps\" , & trap_handler ) ; # ifdef _WITH_SNMP_VRRP_ install_keyword ( \"enable_snmp_vrrp\" , & snmp_vrrp_handler ) ; install_keyword ( \"enable_snmp_keepalived\" , & snmp_vrrp_handler ) ; # endif # ifdef _WITH_SNMP_RFC_ install_keyword ( \"enable_snmp_rfc\" , & snmp_rfc_handler ) ; # endif # ifdef _WITH_SNMP_RFCV2_ install_keyword ( \"enable_snmp_rfcv2\" , & snmp_rfcv2_handler ) ; # endif # ifdef _WITH_SNMP_RFCV3_ install_keyword ( \"enable_snmp_rfcv3\" , & snmp_rfcv3_handler ) ; # endif # ifdef _WITH_SNMP_CHECKER_ install_keyword ( \"enable_snmp_checker\" , & snmp_checker_handler ) ; # endif # endif # ifdef _WITH_DBUS_ install_keyword ( \"enable_dbus\" , & enable_dbus_handler ) ; install_keyword ( \"dbus_service_name\" , & dbus_service_name_handler ) ; # endif install_keyword ( \"script_user\" , & script_user_handler ) ; install_keyword ( \"enable_script_security\" , & script_security_handler ) ; # ifdef _WITH_VRRP_ install_keyword ( \"vrrp_netlink_cmd_rcv_bufs\" , & vrrp_netlink_cmd_rcv_bufs_handler ) ; install_keyword ( \"vrrp_netlink_cmd_rcv_bufs_force\" , & vrrp_netlink_cmd_rcv_bufs_force_handler ) ; install_keyword ( \"vrrp_netlink_monitor_rcv_bufs\" , & vrrp_netlink_monitor_rcv_bufs_handler ) ; install_keyword ( \"vrrp_netlink_monitor_rcv_bufs_force\" , & vrrp_netlink_monitor_rcv_bufs_force_handler ) ; # endif # ifdef _WITH_LVS_ install_keyword ( \"lvs_netlink_cmd_rcv_bufs\" , & lvs_netlink_cmd_rcv_bufs_handler ) ; install_keyword ( \"lvs_netlink_cmd_rcv_bufs_force\" , & lvs_netlink_cmd_rcv_bufs_force_handler ) ; install_keyword ( \"lvs_netlink_monitor_rcv_bufs\" , & lvs_netlink_monitor_rcv_bufs_handler ) ; install_keyword ( \"lvs_netlink_monitor_rcv_bufs_force\" , & lvs_netlink_monitor_rcv_bufs_force_handler ) ; # endif # ifdef _WITH_LVS_ install_keyword ( \"rs_init_notifies\" , & rs_init_notifies_handler ) ; install_keyword ( \"no_checker_emails\" , & no_checker_emails_handler ) ; # endif # ifdef _WITH_VRRP_ install_keyword ( \"vrrp_rx_bufs_policy\" , & vrrp_rx_bufs_policy_handler ) ; install_keyword ( \"vrrp_rx_bufs_multiplier\" , & vrrp_rx_bufs_multiplier_handler ) ; # endif <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif install_keyword ( \"umask\" , & umask_handler ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-426(不受信任的搜索路径)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10009\n\n```\nCWE-426 int main ( int ac , char * * av ) { int c_flag = 0 , d_flag = 0 , D_flag = 0 , k_flag = 0 , s_flag = 0 ; int sock , fd , ch , result , saved_errno ; u_int nalloc ; char * shell , * format , * pidstr , * agentsocket = NULL ; fd_set * readsetp = NULL , * writesetp = NULL ; struct rlimit rlim ; extern int optind ; extern char * optarg ; pid_t pid ; char pidstrbuf [ 1 + 3 * sizeof pid ] ; struct timeval * tvp = NULL ; size_t len ; mode_t prev_mask ; ssh_malloc_init ( ) ; sanitise_stdfd ( ) ; setegid ( getgid ( ) ) ; setgid ( getgid ( ) ) ; # ifdef WITH_OPENSSL OpenSSL_add_all_algorithms ( ) ; # endif <S2SV_StartBug> while ( ( ch = getopt ( ac , av , \"cDdksE:a:t:\" ) ) != - 1 ) { <S2SV_EndBug> switch ( ch ) { case 'E' : fingerprint_hash = ssh_digest_alg_by_name ( optarg ) ; if ( fingerprint_hash == - 1 ) fatal ( \"Invalid<S2SV_blank>hash<S2SV_blank>algorithm<S2SV_blank>\\\\\"%s\\\\\"\" , optarg ) ; break ; case 'c' : if ( s_flag ) usage ( ) ; c_flag ++ ; break ; case 'k' : <S2SV_StartBug> k_flag ++ ; <S2SV_EndBug> break ; case 's' : if ( c_flag ) usage ( ) ; s_flag ++ ; break ; case 'd' : if ( d_flag || D_flag ) usage ( ) ; d_flag ++ ; break ; case 'D' : if ( d_flag || D_flag ) usage ( ) ; D_flag ++ ; break ; case 'a' : agentsocket = optarg ; break ; case 't' : if ( ( lifetime = convtime ( optarg ) ) == - 1 ) { fprintf ( stderr , \"Invalid<S2SV_blank>lifetime\\\\n\" ) ; usage ( ) ; } break ; default : usage ( ) ; } } ac -= optind ; av += optind ; if ( ac > 0 && ( c_flag || k_flag || s_flag || d_flag || D_flag ) ) usage ( ) ; <S2SV_StartBug> if ( ac == 0 && ! c_flag && ! s_flag ) { <S2SV_EndBug> shell = getenv ( \"SHELL\" ) ; if ( shell != NULL && ( len = strlen ( shell ) ) > 2 && strncmp ( shell + len - 3 , \"csh\" , 3 ) == 0 ) c_flag = 1 ; } if ( k_flag ) { const char * errstr = NULL ; pidstr = getenv ( SSH_AGENTPID_ENV_NAME ) ; if ( pidstr == NULL ) { fprintf ( stderr , \"%s<S2SV_blank>not<S2SV_blank>set,<S2SV_blank>cannot<S2SV_blank>kill<S2SV_blank>agent\\\\n\" , SSH_AGENTPID_ENV_NAME ) ; exit ( 1 ) ; } pid = ( int ) strtonum ( pidstr , 2 , INT_MAX , & errstr ) ; if ( errstr ) { fprintf ( stderr , \"%s=\\\\\"%s\\\\\",<S2SV_blank>which<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>good<S2SV_blank>PID:<S2SV_blank>%s\\\\n\" , SSH_AGENTPID_ENV_NAME , pidstr , errstr ) ; exit ( 1 ) ; } if ( kill ( pid , SIGTERM ) == - 1 ) { perror ( \"kill\" ) ; exit ( 1 ) ; } format = c_flag ? \"unsetenv<S2SV_blank>%s;\\\\n\" : \"unset<S2SV_blank>%s;\\\\n\" ; printf ( format , SSH_AUTHSOCKET_ENV_NAME ) ; printf ( format , SSH_AGENTPID_ENV_NAME ) ; printf ( \"echo<S2SV_blank>Agent<S2SV_blank>pid<S2SV_blank>%ld<S2SV_blank>killed;\\\\n\" , ( long ) pid ) ; exit ( 0 ) ; } parent_pid = getpid ( ) ; if ( agentsocket == NULL ) { mktemp_proto ( socket_dir , sizeof ( socket_dir ) ) ; if ( mkdtemp ( socket_dir ) == NULL ) { perror ( \"mkdtemp:<S2SV_blank>private<S2SV_blank>socket<S2SV_blank>dir\" ) ; exit ( 1 ) ; } snprintf ( socket_name , sizeof socket_name , \"%s/agent.%ld\" , socket_dir , ( long ) parent_pid ) ; } else { socket_dir [ 0 ] = '\\\\0' ; strlcpy ( socket_name , agentsocket , sizeof socket_name ) ; } prev_mask = umask ( 0177 ) ; sock = unix_listener ( socket_name , SSH_LISTEN_BACKLOG , 0 ) ; if ( sock < 0 ) { * socket_name = '\\\\0' ; cleanup_exit ( 1 ) ; } umask ( prev_mask ) ; if ( D_flag || d_flag ) { log_init ( __progname , d_flag ? SYSLOG_LEVEL_DEBUG3 : SYSLOG_LEVEL_INFO , SYSLOG_FACILITY_AUTH , 1 ) ; format = c_flag ? \"setenv<S2SV_blank>%s<S2SV_blank>%s;\\\\n\" : \"%s=%s;<S2SV_blank>export<S2SV_blank>%s;\\\\n\" ; printf ( format , SSH_AUTHSOCKET_ENV_NAME , socket_name , SSH_AUTHSOCKET_ENV_NAME ) ; printf ( \"echo<S2SV_blank>Agent<S2SV_blank>pid<S2SV_blank>%ld;\\\\n\" , ( long ) parent_pid ) ; fflush ( stdout ) ; goto skip ; } pid = fork ( ) ; if ( pid == - 1 ) { perror ( \"fork\" ) ; cleanup_exit ( 1 ) ; } if ( pid != 0 ) { close ( sock ) ; snprintf ( pidstrbuf , sizeof pidstrbuf , \"%ld\" , ( long ) pid ) ; if ( ac == 0 ) { format = c_flag ? \"setenv<S2SV_blank>%s<S2SV_blank>%s;\\\\n\" : \"%s=%s;<S2SV_blank>export<S2SV_blank>%s;\\\\n\" ; printf ( format , SSH_AUTHSOCKET_ENV_NAME , socket_name , SSH_AUTHSOCKET_ENV_NAME ) ; printf ( format , SSH_AGENTPID_ENV_NAME , pidstrbuf , SSH_AGENTPID_ENV_NAME ) ; printf ( \"echo<S2SV_blank>Agent<S2SV_blank>pid<S2SV_blank>%ld;\\\\n\" , ( long ) pid ) ; exit ( 0 ) ; } if ( setenv ( SSH_AUTHSOCKET_ENV_NAME , socket_name , 1 ) == - 1 || setenv ( SSH_AGENTPID_ENV_NAME , pidstrbuf , 1 ) == - 1 ) { perror ( \"setenv\" ) ; exit ( 1 ) ; } execvp ( av [ 0 ] , av ) ; perror ( av [ 0 ] ) ; exit ( 1 ) ; } log_init ( __progname , SYSLOG_LEVEL_INFO , SYSLOG_FACILITY_AUTH , 0 ) ; if ( setsid ( ) == - 1 ) { error ( \"setsid:<S2SV_blank>%s\" , strerror ( errno ) ) ; cleanup_exit ( 1 ) ; } ( void ) chdir ( \"/\" ) ; if ( ( fd = open ( _PATH_DEVNULL , O_RDWR , 0 ) ) != - 1 ) { ( void ) dup2 ( fd , STDIN_FILENO ) ; ( void ) dup2 ( fd , STDOUT_FILENO ) ; ( void ) dup2 ( fd , STDERR_FILENO ) ; if ( fd > 2 ) close ( fd ) ; } rlim . rlim_cur = rlim . rlim_max = 0 ; if ( setrlimit ( RLIMIT_CORE , & rlim ) < 0 ) { error ( \"setrlimit<S2SV_blank>RLIMIT_CORE:<S2SV_blank>%s\" , strerror ( errno ) ) ; cleanup_exit ( 1 ) ; } skip : cleanup_pid = getpid ( ) ; # ifdef ENABLE_PKCS11 pkcs11_init ( 0 ) ; # endif new_socket ( AUTH_SOCKET , sock ) ; if ( ac > 0 ) parent_alive_interval = 10 ; idtab_init ( ) ; signal ( SIGPIPE , SIG_IGN ) ; signal ( SIGINT , ( d_flag | D_flag ) ? cleanup_handler : SIG_IGN ) ; signal ( SIGHUP , cleanup_handler ) ; signal ( SIGTERM , cleanup_handler ) ; nalloc = 0 ; <S2SV_StartBug> if ( pledge ( \"stdio<S2SV_blank>cpath<S2SV_blank>unix<S2SV_blank>id<S2SV_blank>proc<S2SV_blank>exec\" , NULL ) == - 1 ) <S2SV_EndBug> fatal ( \"%s:<S2SV_blank>pledge:<S2SV_blank>%s\" , __progname , strerror ( errno ) ) ; while ( 1 ) { prepare_select ( & readsetp , & writesetp , & max_fd , & nalloc , & tvp ) ; result = select ( max_fd + 1 , readsetp , writesetp , NULL , tvp ) ; saved_errno = errno ; if ( parent_alive_interval != 0 ) check_parent_exists ( ) ; ( void ) reaper ( ) ; if ( result < 0 ) { if ( saved_errno == EINTR ) continue ; fatal ( \"select:<S2SV_blank>%s\" , strerror ( saved_errno ) ) ; } else if ( result > 0 ) after_select ( readsetp , writesetp ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , av , \"cDdksE:a:P:t:\" <S2SV_ModEnd> ) ) != <S2SV_ModStart> : k_flag ++ ; break ; case 'P' : if ( pkcs11_whitelist != NULL ) fatal ( \"-P<S2SV_blank>option<S2SV_blank>already<S2SV_blank>specified\" ) ; pkcs11_whitelist = xstrdup ( optarg ) <S2SV_ModStart> ; if ( pkcs11_whitelist == NULL ) pkcs11_whitelist = xstrdup ( DEFAULT_PKCS11_WHITELIST ) ; if ( <S2SV_ModStart> ( pledge ( \"stdio<S2SV_blank>rpath<S2SV_blank>cpath<S2SV_blank>unix<S2SV_blank>id<S2SV_blank>proc<S2SV_blank>exec\" <S2SV_ModEnd> , NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0206\n\n```\nCWE-000 static long aio_read_events_ring ( struct kioctx * ctx , struct io_event __user * event , long nr ) { struct aio_ring * ring ; unsigned head , tail , pos ; long ret = 0 ; int copy_ret ; mutex_lock ( & ctx -> ring_lock ) ; ring = kmap_atomic ( ctx -> ring_pages [ 0 ] ) ; head = ring -> head ; tail = ring -> tail ; kunmap_atomic ( ring ) ; pr_debug ( \"h%u<S2SV_blank>t%u<S2SV_blank>m%u\\\\n\" , head , tail , ctx -> nr_events ) ; if ( head == tail ) goto out ; <S2SV_StartBug> while ( ret < nr ) { <S2SV_EndBug> long avail ; struct io_event * ev ; struct page * page ; avail = ( head <= tail ? tail : ctx -> nr_events ) - head ; if ( head == tail ) break ; avail = min ( avail , nr - ret ) ; avail = min_t ( long , avail , AIO_EVENTS_PER_PAGE - ( ( head + AIO_EVENTS_OFFSET ) % AIO_EVENTS_PER_PAGE ) ) ; pos = head + AIO_EVENTS_OFFSET ; page = ctx -> ring_pages [ pos / AIO_EVENTS_PER_PAGE ] ; pos %= AIO_EVENTS_PER_PAGE ; ev = kmap ( page ) ; copy_ret = copy_to_user ( event + ret , ev + pos , sizeof ( * ev ) * avail ) ; kunmap ( page ) ; if ( unlikely ( copy_ret ) ) { ret = - EFAULT ; goto out ; } ret += avail ; head += avail ; head %= ctx -> nr_events ; } ring = kmap_atomic ( ctx -> ring_pages [ 0 ] ) ; ring -> head = head ; kunmap_atomic ( ring ) ; flush_dcache_page ( ctx -> ring_pages [ 0 ] ) ; pr_debug ( \"%li<S2SV_blank><S2SV_blank>h%u<S2SV_blank>t%u\\\\n\" , ret , head , tail ) ; out : mutex_unlock ( & ctx -> ring_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; head %= ctx -> nr_events ; tail %= ctx -> nr_events ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static void nfs4_open_release ( void * calldata ) { struct nfs4_opendata * data = calldata ; struct nfs4_state * state = NULL ; if ( data -> cancelled == 0 ) goto out_free ; if ( data -> rpc_status != 0 || ! data -> rpc_done ) goto out_free ; if ( data -> o_res . rflags & NFS4_OPEN_RESULT_CONFIRM ) goto out_free ; state = nfs4_opendata_to_nfs4_state ( data ) ; if ( ! IS_ERR ( state ) ) <S2SV_StartBug> nfs4_close_state ( & data -> path , state , data -> o_arg . open_flags ) ; <S2SV_EndBug> out_free : nfs4_opendata_put ( data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> o_arg . fmode <S2SV_ModEnd> ) ; out_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-13112\n\n```\nCWE-125 static void exif_mnote_data_canon_load ( ExifMnoteData * ne , const unsigned char * buf , unsigned int buf_size ) { ExifMnoteDataCanon * n = ( ExifMnoteDataCanon * ) ne ; ExifShort c ; size_t i , tcount , o , datao ; if ( ! n || ! buf || ! buf_size ) { exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } datao = 6 + n -> offset ; <S2SV_StartBug> if ( ( datao + 2 < datao ) || ( datao + 2 < 2 ) || ( datao + 2 > buf_size ) ) { <S2SV_EndBug> exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } c = exif_get_short ( buf + datao , n -> order ) ; datao += 2 ; exif_mnote_data_canon_clear ( n ) ; n -> entries = exif_mem_alloc ( ne -> mem , sizeof ( MnoteCanonEntry ) * c ) ; if ( ! n -> entries ) { EXIF_LOG_NO_MEMORY ( ne -> log , \"ExifMnoteCanon\" , sizeof ( MnoteCanonEntry ) * c ) ; return ; } tcount = 0 ; for ( i = c , o = datao ; i ; -- i , o += 12 ) { size_t s ; <S2SV_StartBug> if ( ( o + 12 < o ) || ( o + 12 < 12 ) || ( o + 12 > buf_size ) ) { <S2SV_EndBug> exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , <S2SV_StartBug> \"ExifMnoteCanon\" , \"Short<S2SV_blank>MakerNote\" ) ; <S2SV_EndBug> break ; } n -> entries [ tcount ] . tag = exif_get_short ( buf + o , n -> order ) ; <S2SV_StartBug> n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; <S2SV_EndBug> <S2SV_StartBug> n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; <S2SV_EndBug> n -> entries [ tcount ] . order = n -> order ; exif_log ( ne -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteCanon\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_canon_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; s = exif_format_get_size ( n -> entries [ tcount ] . format ) * n -> entries [ tcount ] . components ; n -> entries [ tcount ] . size = s ; if ( ! s ) { exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Invalid<S2SV_blank>zero-length<S2SV_blank>tag<S2SV_blank>size\" ) ; continue ; } else { size_t dataofs = o + 8 ; if ( s > 4 ) dataofs = exif_get_long ( buf + dataofs , n -> order ) + 6 ; <S2SV_StartBug> if ( ( dataofs + s < s ) || ( dataofs + s < dataofs ) || ( dataofs + s > buf_size ) ) { <S2SV_EndBug> exif_log ( ne -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteCanon\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) ( dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( ne -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( ne -> log , \"ExifMnoteCanon\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs , s ) ; } ++ tcount ; } n -> count = tcount ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( CHECKOVERFLOW ( datao , buf_size , 2 <S2SV_ModEnd> ) ) { <S2SV_ModStart> ; if ( CHECKOVERFLOW ( o , buf_size , 12 ) ) { exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Short<S2SV_blank>MakerNote\" ) ; break ; } n -> entries [ tcount ] . tag = exif_get_short ( buf + o , n -> order ) ; n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; n -> entries [ tcount ] . order = n -> order ; exif_log ( ne -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteCanon\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_canon_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; if ( exif_format_get_size ( n -> entries [ tcount ] . format ) && buf_size / exif_format_get_size ( n -> entries [ tcount ] . format ) < n -> entries [ tcount ] . components <S2SV_ModEnd> ) { exif_log <S2SV_ModStart> , \"ExifMnoteCanon\" , \"Tag<S2SV_blank>size<S2SV_blank>overflow<S2SV_blank>detected<S2SV_blank>(%u<S2SV_blank>*<S2SV_blank>%lu)\" , exif_format_get_size ( <S2SV_ModEnd> n -> entries <S2SV_ModStart> ] . format ) , <S2SV_ModEnd> n -> entries <S2SV_ModStart> ] . components ) ; continue ; } <S2SV_ModEnd> s = exif_format_get_size <S2SV_ModStart> ; if ( CHECKOVERFLOW ( dataofs , buf_size , s ) ) { exif_log ( ne -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteCanon\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) <S2SV_ModEnd> ( dataofs + <S2SV_ModStart> dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( ne -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( ne -> log , \"ExifMnoteCanon\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs <S2SV_ModEnd> , s )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 static void sample_to_timespec ( const clockid_t which_clock , union cpu_time_count cpu , struct timespec * tp ) { <S2SV_StartBug> if ( CPUCLOCK_WHICH ( which_clock ) == CPUCLOCK_SCHED ) { <S2SV_EndBug> <S2SV_StartBug> tp -> tv_sec = div_long_long_rem ( cpu . sched , <S2SV_EndBug> NSEC_PER_SEC , & tp -> tv_nsec ) ; } else { cputime_to_timespec ( cpu . cpu , tp ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == CPUCLOCK_SCHED ) * tp = ns_to_timespec <S2SV_ModEnd> ( cpu . <S2SV_ModStart> cpu . sched ) ; else <S2SV_ModEnd> cputime_to_timespec ( cpu <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5207\n\n```\nCWE-269 static int do_new_mount ( struct path * path , const char * fstype , int flags , int mnt_flags , const char * name , void * data ) { struct file_system_type * type ; struct user_namespace * user_ns = current -> nsproxy -> mnt_ns -> user_ns ; struct vfsmount * mnt ; int err ; if ( ! fstype ) return - EINVAL ; type = get_fs_type ( fstype ) ; if ( ! type ) return - ENODEV ; if ( user_ns != & init_user_ns ) { if ( ! ( type -> fs_flags & FS_USERNS_MOUNT ) ) { put_filesystem ( type ) ; return - EPERM ; } if ( ! ( type -> fs_flags & FS_USERNS_DEV_MOUNT ) ) { flags |= MS_NODEV ; <S2SV_StartBug> mnt_flags |= MNT_NODEV ; <S2SV_EndBug> } } mnt = vfs_kern_mount ( type , flags , name , data ) ; if ( ! IS_ERR ( mnt ) && ( type -> fs_flags & FS_HAS_SUBTYPE ) && ! mnt -> mnt_sb -> s_subtype ) mnt = fs_set_subtype ( mnt , fstype ) ; put_filesystem ( type ) ; if ( IS_ERR ( mnt ) ) return PTR_ERR ( mnt ) ; err = do_add_mount ( real_mount ( mnt ) , path , mnt_flags ) ; if ( err ) mntput ( mnt ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mnt_flags |= MNT_NODEV | MNT_LOCK_NODEV\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010297\n\n```\nCWE-119 TEE_Result syscall_cryp_derive_key ( unsigned long state , const struct utee_attribute * usr_params , unsigned long param_count , unsigned long derived_key ) { TEE_Result res = TEE_ERROR_NOT_SUPPORTED ; struct tee_ta_session * sess ; struct tee_obj * ko ; struct tee_obj * so ; struct tee_cryp_state * cs ; struct tee_cryp_obj_secret * sk ; const struct tee_cryp_obj_type_props * type_props ; TEE_Attribute * params = NULL ; struct user_ta_ctx * utc ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; utc = to_user_ta_ctx ( sess -> ctx ) ; res = tee_svc_cryp_get_state ( sess , tee_svc_uref_to_vaddr ( state ) , & cs ) ; if ( res != TEE_SUCCESS ) return res ; <S2SV_StartBug> params = malloc ( sizeof ( TEE_Attribute ) * param_count ) ; <S2SV_EndBug> if ( ! params ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( utc , usr_params , param_count , params ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_obj_get ( utc , cs -> key1 , & ko ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_obj_get ( utc , tee_svc_uref_to_vaddr ( derived_key ) , & so ) ; if ( res != TEE_SUCCESS ) goto out ; sk = so -> attr ; type_props = tee_svc_find_type_props ( so -> info . objectType ) ; if ( ! type_props ) { res = TEE_ERROR_NOT_SUPPORTED ; goto out ; } if ( cs -> algo == TEE_ALG_DH_DERIVE_SHARED_SECRET ) { size_t alloc_size ; struct bignum * pub ; struct bignum * ss ; if ( param_count != 1 || params [ 0 ] . attributeID != TEE_ATTR_DH_PUBLIC_VALUE ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } alloc_size = params [ 0 ] . content . ref . length * 8 ; pub = crypto_bignum_allocate ( alloc_size ) ; ss = crypto_bignum_allocate ( alloc_size ) ; if ( pub && ss ) { crypto_bignum_bin2bn ( params [ 0 ] . content . ref . buffer , params [ 0 ] . content . ref . length , pub ) ; res = crypto_acipher_dh_shared_secret ( ko -> attr , pub , ss ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = crypto_bignum_num_bytes ( ss ) ; crypto_bignum_bn2bin ( ss , ( uint8_t * ) ( sk + 1 ) ) ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } } else { res = TEE_ERROR_OUT_OF_MEMORY ; } crypto_bignum_free ( pub ) ; crypto_bignum_free ( ss ) ; } else if ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) == TEE_MAIN_ALGO_ECDH ) { size_t alloc_size ; struct ecc_public_key key_public ; uint8_t * pt_secret ; unsigned long pt_secret_len ; if ( param_count != 2 || params [ 0 ] . attributeID != TEE_ATTR_ECC_PUBLIC_VALUE_X || params [ 1 ] . attributeID != TEE_ATTR_ECC_PUBLIC_VALUE_Y ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } switch ( cs -> algo ) { case TEE_ALG_ECDH_P192 : alloc_size = 192 ; break ; case TEE_ALG_ECDH_P224 : alloc_size = 224 ; break ; case TEE_ALG_ECDH_P256 : alloc_size = 256 ; break ; case TEE_ALG_ECDH_P384 : alloc_size = 384 ; break ; case TEE_ALG_ECDH_P521 : alloc_size = 521 ; break ; default : res = TEE_ERROR_NOT_IMPLEMENTED ; goto out ; } res = crypto_acipher_alloc_ecc_public_key ( & key_public , alloc_size ) ; if ( res != TEE_SUCCESS ) goto out ; key_public . curve = ( ( struct ecc_keypair * ) ko -> attr ) -> curve ; crypto_bignum_bin2bn ( params [ 0 ] . content . ref . buffer , params [ 0 ] . content . ref . length , key_public . x ) ; crypto_bignum_bin2bn ( params [ 1 ] . content . ref . buffer , params [ 1 ] . content . ref . length , key_public . y ) ; pt_secret = ( uint8_t * ) ( sk + 1 ) ; pt_secret_len = sk -> alloc_size ; res = crypto_acipher_ecc_shared_secret ( ko -> attr , & key_public , pt_secret , & pt_secret_len ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = pt_secret_len ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } crypto_acipher_free_ecc_public_key ( & key_public ) ; } # if defined ( CFG_CRYPTO_HKDF ) else if ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) == TEE_MAIN_ALGO_HKDF ) { void * salt , * info ; size_t salt_len , info_len , okm_len ; uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH ( cs -> algo ) ; struct tee_cryp_obj_secret * ik = ko -> attr ; const uint8_t * ikm = ( const uint8_t * ) ( ik + 1 ) ; res = get_hkdf_params ( params , param_count , & salt , & salt_len , & info , & info_len , & okm_len ) ; if ( res != TEE_SUCCESS ) goto out ; if ( okm_len > ik -> alloc_size ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } res = tee_cryp_hkdf ( hash_id , ikm , ik -> key_size , salt , salt_len , info , info_len , ( uint8_t * ) ( sk + 1 ) , okm_len ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = okm_len ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } } # endif # if defined ( CFG_CRYPTO_CONCAT_KDF ) else if ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) == TEE_MAIN_ALGO_CONCAT_KDF ) { void * info ; size_t info_len , derived_key_len ; uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH ( cs -> algo ) ; struct tee_cryp_obj_secret * ss = ko -> attr ; const uint8_t * shared_secret = ( const uint8_t * ) ( ss + 1 ) ; res = get_concat_kdf_params ( params , param_count , & info , & info_len , & derived_key_len ) ; if ( res != TEE_SUCCESS ) goto out ; if ( derived_key_len > ss -> alloc_size ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } res = tee_cryp_concat_kdf ( hash_id , shared_secret , ss -> key_size , info , info_len , ( uint8_t * ) ( sk + 1 ) , derived_key_len ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = derived_key_len ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } } # endif # if defined ( CFG_CRYPTO_PBKDF2 ) else if ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) == TEE_MAIN_ALGO_PBKDF2 ) { void * salt ; size_t salt_len , iteration_count , derived_key_len ; uint32_t hash_id = TEE_ALG_GET_DIGEST_HASH ( cs -> algo ) ; struct tee_cryp_obj_secret * ss = ko -> attr ; const uint8_t * password = ( const uint8_t * ) ( ss + 1 ) ; res = get_pbkdf2_params ( params , param_count , & salt , & salt_len , & derived_key_len , & iteration_count ) ; if ( res != TEE_SUCCESS ) goto out ; if ( derived_key_len > ss -> alloc_size ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } res = tee_cryp_pbkdf2 ( hash_id , password , ss -> key_size , salt , salt_len , iteration_count , ( uint8_t * ) ( sk + 1 ) , derived_key_len ) ; if ( res == TEE_SUCCESS ) { sk -> key_size = derived_key_len ; so -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; set_attribute ( so , type_props , TEE_ATTR_SECRET_VALUE ) ; } } # endif else res = TEE_ERROR_NOT_SUPPORTED ; out : free ( params ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , param_count , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_diff_update_prob ( vp9_reader * r , vp9_prob * p ) { <S2SV_EndBug> <S2SV_StartBug> if ( vp9_read ( r , DIFF_UPDATE_PROB ) ) { <S2SV_EndBug> const int delp = decode_term_subexp ( r ) ; <S2SV_StartBug> * p = ( vp9_prob ) inv_remap_prob ( delp , * p ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_diff_update_prob ( vpx_reader <S2SV_ModEnd> * r , <S2SV_ModStart> * r , vpx_prob <S2SV_ModEnd> * p ) <S2SV_ModStart> { if ( vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> p = ( vpx_prob <S2SV_ModEnd> ) inv_remap_prob (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> struct nfs_open_context * nfs_find_open_context ( struct inode * inode , struct rpc_cred * cred , int mode ) <S2SV_EndBug> { struct nfs_inode * nfsi = NFS_I ( inode ) ; struct nfs_open_context * pos , * ctx = NULL ; spin_lock ( & inode -> i_lock ) ; list_for_each_entry ( pos , & nfsi -> open_files , list ) { if ( cred != NULL && pos -> cred != cred ) continue ; if ( ( pos -> mode & mode ) == mode ) { ctx = get_nfs_open_context ( pos ) ; break ; } } spin_unlock ( & inode -> i_lock ) ; return ctx ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cred , fmode_t <S2SV_ModEnd> mode ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3137\n\n```\nCWE-000 static int cypress_open ( struct tty_struct * tty , struct usb_serial_port * port ) { struct cypress_private * priv = usb_get_serial_port_data ( port ) ; struct usb_serial * serial = port -> serial ; unsigned long flags ; int result = 0 ; if ( ! priv -> comm_is_ok ) return - EIO ; usb_clear_halt ( serial -> dev , 0x81 ) ; usb_clear_halt ( serial -> dev , 0x02 ) ; spin_lock_irqsave ( & priv -> lock , flags ) ; priv -> bytes_in = 0 ; priv -> bytes_out = 0 ; priv -> cmd_count = 0 ; priv -> rx_flags = 0 ; spin_unlock_irqrestore ( & priv -> lock , flags ) ; cypress_send ( port ) ; if ( tty ) cypress_set_termios ( tty , port , & priv -> tmp_termios ) ; <S2SV_StartBug> if ( ! port -> interrupt_in_urb ) { <S2SV_EndBug> dev_err ( & port -> dev , \"%s<S2SV_blank>-<S2SV_blank>interrupt_in_urb<S2SV_blank>is<S2SV_blank>empty!\\\\n\" , __func__ ) ; return - 1 ; } usb_fill_int_urb ( port -> interrupt_in_urb , serial -> dev , usb_rcvintpipe ( serial -> dev , port -> interrupt_in_endpointAddress ) , port -> interrupt_in_urb -> transfer_buffer , port -> interrupt_in_urb -> transfer_buffer_length , cypress_read_int_callback , port , priv -> read_urb_interval ) ; result = usb_submit_urb ( port -> interrupt_in_urb , GFP_KERNEL ) ; if ( result ) { dev_err ( & port -> dev , \"%s<S2SV_blank>-<S2SV_blank>failed<S2SV_blank>submitting<S2SV_blank>read<S2SV_blank>urb,<S2SV_blank>error<S2SV_blank>%d\\\\n\" , __func__ , result ) ; cypress_set_dead ( port ) ; } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp_termios ) ; <S2SV_ModEnd> usb_fill_int_urb ( port\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int btsock_thread_add_fd ( int h , int fd , int type , int flags , uint32_t user_id ) { if ( h < 0 || h >= MAX_THREAD ) { APPL_TRACE_ERROR ( \"invalid<S2SV_blank>bt<S2SV_blank>thread<S2SV_blank>handle:%d\" , h ) ; return FALSE ; } if ( ts [ h ] . cmd_fdw == - 1 ) { APPL_TRACE_ERROR ( \"cmd<S2SV_blank>socket<S2SV_blank>is<S2SV_blank>not<S2SV_blank>created.<S2SV_blank>socket<S2SV_blank>thread<S2SV_blank>may<S2SV_blank>not<S2SV_blank>initialized\" ) ; return FALSE ; } if ( flags & SOCK_THREAD_ADD_FD_SYNC ) { if ( ts [ h ] . thread_id == pthread_self ( ) ) { flags &= ~ SOCK_THREAD_ADD_FD_SYNC ; add_poll ( h , fd , type , flags , user_id ) ; return TRUE ; } APPL_TRACE_DEBUG ( \"THREAD_ADD_FD_SYNC<S2SV_blank>is<S2SV_blank>not<S2SV_blank>called<S2SV_blank>in<S2SV_blank>poll<S2SV_blank>thread,<S2SV_blank>fallback<S2SV_blank>to<S2SV_blank>async\" ) ; } sock_cmd_t cmd = { CMD_ADD_FD , fd , type , flags , user_id } ; APPL_TRACE_DEBUG ( \"adding<S2SV_blank>fd:%d,<S2SV_blank>flags:0x%x\" , fd , flags ) ; <S2SV_StartBug> return send ( ts [ h ] . cmd_fdw , & cmd , sizeof ( cmd ) , 0 ) == sizeof ( cmd ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19481\n\n```\nCWE-119 static int cac_cac1_get_certificate ( sc_card_t * card , u8 * * out_buf , size_t * out_len ) { u8 buf [ CAC_MAX_SIZE ] ; u8 * out_ptr ; size_t size = 0 ; size_t left = 0 ; <S2SV_StartBug> size_t len , next_len ; <S2SV_EndBug> sc_apdu_t apdu ; int r = SC_SUCCESS ; SC_FUNC_CALLED ( card -> ctx , SC_LOG_DEBUG_VERBOSE ) ; size = left = * out_buf ? * out_len : sizeof ( buf ) ; out_ptr = * out_buf ? * out_buf : buf ; sc_format_apdu ( card , & apdu , SC_APDU_CASE_2_SHORT , CAC_INS_GET_CERTIFICATE , 0 , 0 ) ; <S2SV_StartBug> next_len = MIN ( left , 100 ) ; <S2SV_EndBug> <S2SV_StartBug> for ( ; left > 0 ; left -= len , out_ptr += len ) { <S2SV_EndBug> len = next_len ; apdu . resp = out_ptr ; apdu . le = len ; apdu . resplen = left ; r = sc_transmit_apdu ( card , & apdu ) ; if ( r < 0 ) { break ; } if ( apdu . resplen == 0 ) { r = SC_ERROR_INTERNAL ; break ; } if ( apdu . sw1 != 0x63 || apdu . sw2 < 1 ) { r = sc_check_sw ( card , apdu . sw1 , apdu . sw2 ) ; left -= len ; break ; } <S2SV_StartBug> next_len = MIN ( left , apdu . sw2 ) ; <S2SV_EndBug> } if ( r < 0 ) { SC_FUNC_RETURN ( card -> ctx , SC_LOG_DEBUG_VERBOSE , r ) ; } r = size - left ; if ( * out_buf == NULL ) { * out_buf = malloc ( r ) ; if ( * out_buf == NULL ) { SC_FUNC_RETURN ( card -> ctx , SC_LOG_DEBUG_VERBOSE , SC_ERROR_OUT_OF_MEMORY ) ; } memcpy ( * out_buf , buf , r ) ; } * out_len = r ; SC_FUNC_RETURN ( card -> ctx , SC_LOG_DEBUG_VERBOSE , r ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t len <S2SV_ModEnd> ; sc_apdu_t apdu <S2SV_ModStart> 0 ) ; len <S2SV_ModEnd> = MIN ( <S2SV_ModStart> > 0 ; ) { <S2SV_ModEnd> apdu . resp <S2SV_ModStart> break ; } left -= len ; out_ptr += len ; len <S2SV_ModEnd> = MIN (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11068\n\n```\nCWE-120 static void ProcessRadioRxDone ( void ) { LoRaMacHeader_t macHdr ; ApplyCFListParams_t applyCFList ; GetPhyParams_t getPhy ; PhyParam_t phyParam ; LoRaMacCryptoStatus_t macCryptoStatus = LORAMAC_CRYPTO_ERROR ; LoRaMacMessageData_t macMsgData ; LoRaMacMessageJoinAccept_t macMsgJoinAccept ; uint8_t * payload = RxDoneParams . Payload ; uint16_t size = RxDoneParams . Size ; int16_t rssi = RxDoneParams . Rssi ; int8_t snr = RxDoneParams . Snr ; uint8_t pktHeaderLen = 0 ; uint32_t downLinkCounter = 0 ; uint32_t address = MacCtx . NvmCtx -> DevAddr ; uint8_t multicast = 0 ; AddressIdentifier_t addrID = UNICAST_DEV_ADDR ; FCntIdentifier_t fCntID ; MacCtx . McpsConfirm . AckReceived = false ; MacCtx . McpsIndication . Rssi = rssi ; MacCtx . McpsIndication . Snr = snr ; MacCtx . McpsIndication . RxSlot = MacCtx . RxSlot ; MacCtx . McpsIndication . Port = 0 ; MacCtx . McpsIndication . Multicast = 0 ; MacCtx . McpsIndication . FramePending = 0 ; MacCtx . McpsIndication . Buffer = NULL ; MacCtx . McpsIndication . BufferSize = 0 ; MacCtx . McpsIndication . RxData = false ; MacCtx . McpsIndication . AckReceived = false ; MacCtx . McpsIndication . DownLinkCounter = 0 ; MacCtx . McpsIndication . McpsIndication = MCPS_UNCONFIRMED ; MacCtx . McpsIndication . DevAddress = 0 ; MacCtx . McpsIndication . DeviceTimeAnsReceived = false ; Radio . Sleep ( ) ; TimerStop ( & MacCtx . RxWindowTimer2 ) ; if ( LoRaMacClassBRxBeacon ( payload , size ) == true ) { MacCtx . MlmeIndication . BeaconInfo . Rssi = rssi ; MacCtx . MlmeIndication . BeaconInfo . Snr = snr ; return ; } if ( MacCtx . NvmCtx -> DeviceClass == CLASS_B ) { if ( LoRaMacClassBIsPingExpected ( ) == true ) { LoRaMacClassBSetPingSlotState ( PINGSLOT_STATE_CALC_PING_OFFSET ) ; LoRaMacClassBPingSlotTimerEvent ( NULL ) ; MacCtx . McpsIndication . RxSlot = RX_SLOT_WIN_CLASS_B_PING_SLOT ; } else if ( LoRaMacClassBIsMulticastExpected ( ) == true ) { LoRaMacClassBSetMulticastSlotState ( PINGSLOT_STATE_CALC_PING_OFFSET ) ; LoRaMacClassBMulticastSlotTimerEvent ( NULL ) ; MacCtx . McpsIndication . RxSlot = RX_SLOT_WIN_CLASS_B_MULTICAST_SLOT ; } } macHdr . Value = payload [ pktHeaderLen ++ ] ; switch ( macHdr . Bits . MType ) { <S2SV_StartBug> case FRAME_TYPE_JOIN_ACCEPT : <S2SV_EndBug> macMsgJoinAccept . Buffer = payload ; macMsgJoinAccept . BufSize = size ; if ( MacCtx . NvmCtx -> NetworkActivation != ACTIVATION_TYPE_NONE ) { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; PrepareRxDoneAbort ( ) ; return ; } macCryptoStatus = LoRaMacCryptoHandleJoinAccept ( JOIN_REQ , SecureElementGetJoinEui ( ) , & macMsgJoinAccept ) ; if ( LORAMAC_CRYPTO_SUCCESS == macCryptoStatus ) { MacCtx . NvmCtx -> NetID = ( uint32_t ) macMsgJoinAccept . NetID [ 0 ] ; MacCtx . NvmCtx -> NetID |= ( ( uint32_t ) macMsgJoinAccept . NetID [ 1 ] << 8 ) ; MacCtx . NvmCtx -> NetID |= ( ( uint32_t ) macMsgJoinAccept . NetID [ 2 ] << 16 ) ; MacCtx . NvmCtx -> DevAddr = macMsgJoinAccept . DevAddr ; MacCtx . NvmCtx -> MacParams . Rx1DrOffset = macMsgJoinAccept . DLSettings . Bits . RX1DRoffset ; MacCtx . NvmCtx -> MacParams . Rx2Channel . Datarate = macMsgJoinAccept . DLSettings . Bits . RX2DataRate ; MacCtx . NvmCtx -> MacParams . RxCChannel . Datarate = macMsgJoinAccept . DLSettings . Bits . RX2DataRate ; MacCtx . NvmCtx -> MacParams . ReceiveDelay1 = macMsgJoinAccept . RxDelay ; if ( MacCtx . NvmCtx -> MacParams . ReceiveDelay1 == 0 ) { MacCtx . NvmCtx -> MacParams . ReceiveDelay1 = 1 ; } MacCtx . NvmCtx -> MacParams . ReceiveDelay1 *= 1000 ; MacCtx . NvmCtx -> MacParams . ReceiveDelay2 = MacCtx . NvmCtx -> MacParams . ReceiveDelay1 + 1000 ; MacCtx . NvmCtx -> Version . Fields . Minor = 0 ; applyCFList . Payload = macMsgJoinAccept . CFList ; applyCFList . Size = size - 17 ; RegionApplyCFList ( MacCtx . NvmCtx -> Region , & applyCFList ) ; MacCtx . NvmCtx -> NetworkActivation = ACTIVATION_TYPE_OTAA ; if ( LoRaMacConfirmQueueIsCmdActive ( MLME_JOIN ) == true ) { LoRaMacConfirmQueueSetStatus ( LORAMAC_EVENT_INFO_STATUS_OK , MLME_JOIN ) ; } } else { if ( LoRaMacConfirmQueueIsCmdActive ( MLME_JOIN ) == true ) { LoRaMacConfirmQueueSetStatus ( LORAMAC_EVENT_INFO_STATUS_JOIN_FAIL , MLME_JOIN ) ; } } break ; case FRAME_TYPE_DATA_CONFIRMED_DOWN : MacCtx . McpsIndication . McpsIndication = MCPS_CONFIRMED ; case FRAME_TYPE_DATA_UNCONFIRMED_DOWN : getPhy . UplinkDwellTime = MacCtx . NvmCtx -> MacParams . DownlinkDwellTime ; getPhy . Datarate = MacCtx . McpsIndication . RxDatarate ; getPhy . Attribute = PHY_MAX_PAYLOAD ; phyParam = RegionGetPhyParam ( MacCtx . NvmCtx -> Region , & getPhy ) ; <S2SV_StartBug> if ( MAX ( 0 , ( int16_t ) ( ( int16_t ) size - ( int16_t ) LORA_MAC_FRMPAYLOAD_OVERHEAD ) ) > ( int16_t ) phyParam . Value ) <S2SV_EndBug> { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; PrepareRxDoneAbort ( ) ; return ; } macMsgData . Buffer = payload ; macMsgData . BufSize = size ; macMsgData . FRMPayload = MacCtx . RxPayload ; macMsgData . FRMPayloadSize = LORAMAC_PHY_MAXPAYLOAD ; if ( LORAMAC_PARSER_SUCCESS != LoRaMacParserData ( & macMsgData ) ) { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; PrepareRxDoneAbort ( ) ; return ; } MacCtx . McpsIndication . DevAddress = macMsgData . FHDR . DevAddr ; FType_t fType ; if ( LORAMAC_STATUS_OK != DetermineFrameType ( & macMsgData , & fType ) ) { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; PrepareRxDoneAbort ( ) ; return ; } multicast = 0 ; downLinkCounter = 0 ; for ( uint8_t i = 0 ; i < LORAMAC_MAX_MC_CTX ; i ++ ) { if ( ( MacCtx . NvmCtx -> MulticastChannelList [ i ] . ChannelParams . Address == macMsgData . FHDR . DevAddr ) && ( MacCtx . NvmCtx -> MulticastChannelList [ i ] . ChannelParams . IsEnabled == true ) ) { multicast = 1 ; addrID = MacCtx . NvmCtx -> MulticastChannelList [ i ] . ChannelParams . GroupID ; downLinkCounter = * ( MacCtx . NvmCtx -> MulticastChannelList [ i ] . DownLinkCounter ) ; address = MacCtx . NvmCtx -> MulticastChannelList [ i ] . ChannelParams . Address ; if ( MacCtx . NvmCtx -> DeviceClass == CLASS_C ) { MacCtx . McpsIndication . RxSlot = RX_SLOT_WIN_CLASS_C_MULTICAST ; } break ; } } if ( ( multicast == 1 ) && ( ( fType != FRAME_TYPE_D ) || ( macMsgData . FHDR . FCtrl . Bits . Ack == true ) || ( macMsgData . FHDR . FCtrl . Bits . AdrAckReq == true ) ) ) { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; PrepareRxDoneAbort ( ) ; return ; } getPhy . Attribute = PHY_MAX_FCNT_GAP ; phyParam = RegionGetPhyParam ( MacCtx . NvmCtx -> Region , & getPhy ) ; macCryptoStatus = GetFCntDown ( addrID , fType , & macMsgData , MacCtx . NvmCtx -> Version , phyParam . Value , & fCntID , & downLinkCounter ) ; if ( macCryptoStatus != LORAMAC_CRYPTO_SUCCESS ) { if ( macCryptoStatus == LORAMAC_CRYPTO_FAIL_FCNT_DUPLICATED ) { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_DOWNLINK_REPEATED ; if ( ( MacCtx . NvmCtx -> Version . Fields . Minor == 0 ) && ( macHdr . Bits . MType == FRAME_TYPE_DATA_CONFIRMED_DOWN ) && ( MacCtx . NvmCtx -> LastRxMic == macMsgData . MIC ) ) { MacCtx . NvmCtx -> SrvAckRequested = true ; } } else if ( macCryptoStatus == LORAMAC_CRYPTO_FAIL_MAX_GAP_FCNT ) { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_DOWNLINK_TOO_MANY_FRAMES_LOSS ; } else { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; } MacCtx . McpsIndication . DownLinkCounter = downLinkCounter ; PrepareRxDoneAbort ( ) ; return ; } macCryptoStatus = LoRaMacCryptoUnsecureMessage ( addrID , address , fCntID , downLinkCounter , & macMsgData ) ; if ( macCryptoStatus != LORAMAC_CRYPTO_SUCCESS ) { if ( macCryptoStatus == LORAMAC_CRYPTO_FAIL_ADDRESS ) { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ADDRESS_FAIL ; } else { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_MIC_FAIL ; } PrepareRxDoneAbort ( ) ; return ; } MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_OK ; MacCtx . McpsIndication . Multicast = multicast ; MacCtx . McpsIndication . FramePending = macMsgData . FHDR . FCtrl . Bits . FPending ; MacCtx . McpsIndication . Buffer = NULL ; MacCtx . McpsIndication . BufferSize = 0 ; MacCtx . McpsIndication . DownLinkCounter = downLinkCounter ; MacCtx . McpsIndication . AckReceived = macMsgData . FHDR . FCtrl . Bits . Ack ; MacCtx . McpsConfirm . Status = LORAMAC_EVENT_INFO_STATUS_OK ; MacCtx . McpsConfirm . AckReceived = macMsgData . FHDR . FCtrl . Bits . Ack ; if ( ( MacCtx . McpsIndication . RxSlot == RX_SLOT_WIN_1 ) || ( MacCtx . McpsIndication . RxSlot == RX_SLOT_WIN_2 ) ) { MacCtx . NvmCtx -> AdrAckCounter = 0 ; } if ( multicast == 1 ) { MacCtx . McpsIndication . McpsIndication = MCPS_MULTICAST ; } else { if ( macHdr . Bits . MType == FRAME_TYPE_DATA_CONFIRMED_DOWN ) { MacCtx . NvmCtx -> SrvAckRequested = true ; if ( MacCtx . NvmCtx -> Version . Fields . Minor == 0 ) { MacCtx . NvmCtx -> LastRxMic = macMsgData . MIC ; } MacCtx . McpsIndication . McpsIndication = MCPS_CONFIRMED ; } else { MacCtx . NvmCtx -> SrvAckRequested = false ; MacCtx . McpsIndication . McpsIndication = MCPS_UNCONFIRMED ; } } RemoveMacCommands ( MacCtx . McpsIndication . RxSlot , macMsgData . FHDR . FCtrl , MacCtx . McpsConfirm . McpsRequest ) ; switch ( fType ) { case FRAME_TYPE_A : { ProcessMacCommands ( macMsgData . FHDR . FOpts , 0 , macMsgData . FHDR . FCtrl . Bits . FOptsLen , snr , MacCtx . McpsIndication . RxSlot ) ; MacCtx . McpsIndication . Port = macMsgData . FPort ; MacCtx . McpsIndication . Buffer = macMsgData . FRMPayload ; MacCtx . McpsIndication . BufferSize = macMsgData . FRMPayloadSize ; MacCtx . McpsIndication . RxData = true ; break ; } case FRAME_TYPE_B : { ProcessMacCommands ( macMsgData . FHDR . FOpts , 0 , macMsgData . FHDR . FCtrl . Bits . FOptsLen , snr , MacCtx . McpsIndication . RxSlot ) ; MacCtx . McpsIndication . Port = macMsgData . FPort ; break ; } case FRAME_TYPE_C : { ProcessMacCommands ( macMsgData . FRMPayload , 0 , macMsgData . FRMPayloadSize , snr , MacCtx . McpsIndication . RxSlot ) ; MacCtx . McpsIndication . Port = macMsgData . FPort ; break ; } case FRAME_TYPE_D : { MacCtx . McpsIndication . Port = macMsgData . FPort ; MacCtx . McpsIndication . Buffer = macMsgData . FRMPayload ; MacCtx . McpsIndication . BufferSize = macMsgData . FRMPayloadSize ; MacCtx . McpsIndication . RxData = true ; break ; } default : MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; PrepareRxDoneAbort ( ) ; break ; } MacCtx . MacFlags . Bits . McpsInd = 1 ; break ; case FRAME_TYPE_PROPRIETARY : memcpy1 ( MacCtx . RxPayload , & payload [ pktHeaderLen ] , size - pktHeaderLen ) ; MacCtx . McpsIndication . McpsIndication = MCPS_PROPRIETARY ; MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_OK ; MacCtx . McpsIndication . Buffer = MacCtx . RxPayload ; MacCtx . McpsIndication . BufferSize = size - pktHeaderLen ; MacCtx . MacFlags . Bits . McpsInd = 1 ; break ; default : MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; PrepareRxDoneAbort ( ) ; break ; } if ( MacCtx . NodeAckRequested == true ) { if ( MacCtx . McpsConfirm . AckReceived == true ) { OnAckTimeoutTimerEvent ( NULL ) ; } } else { if ( MacCtx . NvmCtx -> DeviceClass == CLASS_C ) { OnAckTimeoutTimerEvent ( NULL ) ; } } MacCtx . MacFlags . Bits . MacDone = 1 ; UpdateRxSlotIdleState ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case FRAME_TYPE_JOIN_ACCEPT : if ( size < LORAMAC_JOIN_ACCEPT_FRAME_MIN_SIZE ) { MacCtx . McpsIndication . Status = LORAMAC_EVENT_INFO_STATUS_ERROR ; PrepareRxDoneAbort ( ) ; return ; } <S2SV_ModStart> ; if ( ( <S2SV_ModStart> ( int16_t ) LORAMAC_FRAME_PAYLOAD_OVERHEAD_SIZE <S2SV_ModEnd> ) ) > <S2SV_ModStart> phyParam . Value ) || ( size < LORAMAC_FRAME_PAYLOAD_MIN_SIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1334\n\n```\nCWE-17 static int attach_child_main ( void * data ) { struct attach_clone_payload * payload = ( struct attach_clone_payload * ) data ; int ipc_socket = payload -> ipc_socket ; <S2SV_StartBug> lxc_attach_options_t * options = payload -> options ; <S2SV_EndBug> struct lxc_proc_context_info * init_ctx = payload -> init_ctx ; # if HAVE_SYS_PERSONALITY_H long new_personality ; # endif int ret ; int status ; int expected ; long flags ; int fd ; uid_t new_uid ; gid_t new_gid ; expected = 0 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_socket , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>(0)\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( ! ( options -> namespaces & CLONE_NEWNS ) && ( options -> attach_flags & LXC_ATTACH_REMOUNT_PROC_SYS ) ) { ret = lxc_attach_remount_sys_proc ( ) ; if ( ret < 0 ) { shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } # if HAVE_SYS_PERSONALITY_H if ( options -> personality < 0 ) new_personality = init_ctx -> personality ; else new_personality = options -> personality ; if ( options -> attach_flags & LXC_ATTACH_SET_PERSONALITY ) { ret = personality ( new_personality ) ; if ( ret < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>ensure<S2SV_blank>correct<S2SV_blank>architecture\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } # endif if ( options -> attach_flags & LXC_ATTACH_DROP_CAPABILITIES ) { ret = lxc_attach_drop_privs ( init_ctx ) ; if ( ret < 0 ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>drop<S2SV_blank>privileges\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } ret = lxc_attach_set_environment ( options -> env_policy , options -> extra_env_vars , options -> extra_keep_env ) ; if ( ret < 0 ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>initial<S2SV_blank>environment<S2SV_blank>for<S2SV_blank>attached<S2SV_blank>process\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } new_uid = 0 ; new_gid = 0 ; if ( options -> namespaces & CLONE_NEWUSER ) lxc_attach_get_init_uidgid ( & new_uid , & new_gid ) ; if ( options -> uid != ( uid_t ) - 1 ) new_uid = options -> uid ; if ( options -> gid != ( gid_t ) - 1 ) new_gid = options -> gid ; if ( options -> stdin_fd && isatty ( options -> stdin_fd ) ) { if ( setsid ( ) < 0 ) { SYSERROR ( \"unable<S2SV_blank>to<S2SV_blank>setsid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( ioctl ( options -> stdin_fd , TIOCSCTTY , ( char * ) NULL ) < 0 ) { SYSERROR ( \"unable<S2SV_blank>to<S2SV_blank>TIOCSTTY\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } if ( ( new_gid != 0 || options -> namespaces & CLONE_NEWUSER ) ) { if ( setgid ( new_gid ) || setgroups ( 0 , NULL ) ) { SYSERROR ( \"switching<S2SV_blank>to<S2SV_blank>container<S2SV_blank>gid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } if ( ( new_uid != 0 || options -> namespaces & CLONE_NEWUSER ) && setuid ( new_uid ) ) { SYSERROR ( \"switching<S2SV_blank>to<S2SV_blank>container<S2SV_blank>uid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } status = 1 ; ret = lxc_write_nointr ( ipc_socket , & status , sizeof ( status ) ) ; if ( ret != sizeof ( status ) ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(1)\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } expected = 2 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_socket , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>final<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>(2)\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } shutdown ( ipc_socket , SHUT_RDWR ) ; close ( ipc_socket ) ; <S2SV_StartBug> if ( ( options -> namespaces & CLONE_NEWNS ) && ( options -> attach_flags & LXC_ATTACH_LSM ) ) { <S2SV_EndBug> int on_exec ; <S2SV_StartBug> int proc_mounted ; <S2SV_EndBug> on_exec = options -> attach_flags & LXC_ATTACH_LSM_EXEC ? 1 : 0 ; <S2SV_StartBug> proc_mounted = mount_proc_if_needed ( \"/\" ) ; <S2SV_EndBug> if ( proc_mounted == - 1 ) { ERROR ( \"Error<S2SV_blank>mounting<S2SV_blank>a<S2SV_blank>sane<S2SV_blank>/proc\" ) ; rexit ( - 1 ) ; } <S2SV_StartBug> ret = lsm_process_label_set ( init_ctx -> lsm_label , <S2SV_EndBug> init_ctx -> container -> lxc_conf , 0 , on_exec ) ; if ( proc_mounted ) umount ( \"/proc\" ) ; if ( ret < 0 ) { rexit ( - 1 ) ; } } if ( init_ctx -> container && init_ctx -> container -> lxc_conf && lxc_seccomp_load ( init_ctx -> container -> lxc_conf ) != 0 ) { ERROR ( \"Loading<S2SV_blank>seccomp<S2SV_blank>policy\" ) ; rexit ( - 1 ) ; } lxc_proc_put_context_info ( init_ctx ) ; if ( options -> stdin_fd >= 0 && options -> stdin_fd != 0 ) dup2 ( options -> stdin_fd , 0 ) ; if ( options -> stdout_fd >= 0 && options -> stdout_fd != 1 ) dup2 ( options -> stdout_fd , 1 ) ; if ( options -> stderr_fd >= 0 && options -> stderr_fd != 2 ) dup2 ( options -> stderr_fd , 2 ) ; if ( options -> stdin_fd > 2 ) close ( options -> stdin_fd ) ; if ( options -> stdout_fd > 2 ) close ( options -> stdout_fd ) ; if ( options -> stderr_fd > 2 ) close ( options -> stderr_fd ) ; for ( fd = 0 ; fd <= 2 ; fd ++ ) { flags = fcntl ( fd , F_GETFL ) ; if ( flags < 0 ) continue ; if ( flags & FD_CLOEXEC ) { if ( fcntl ( fd , F_SETFL , flags & ~ FD_CLOEXEC ) < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>clear<S2SV_blank>CLOEXEC<S2SV_blank>from<S2SV_blank>fd\" ) ; } } } <S2SV_StartBug> rexit ( payload -> exec_function ( payload -> exec_payload ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ipc_socket ; int procfd = payload -> procfd ; <S2SV_ModStart> & LXC_ATTACH_LSM ) && init_ctx -> lsm_label <S2SV_ModStart> int on_exec ; <S2SV_ModEnd> on_exec = options <S2SV_ModStart> : 0 ; if ( lsm_set_label_at ( procfd , on_exec , <S2SV_ModEnd> init_ctx -> lsm_label <S2SV_ModStart> init_ctx -> lsm_label ) <S2SV_ModEnd> < 0 ) <S2SV_ModStart> } } } close ( procfd ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1479\n\n```\nCWE-399 SYSCALL_DEFINE1 ( inotify_init1 , int , flags ) { <S2SV_StartBug> struct fsnotify_group * group ; <S2SV_EndBug> struct user_struct * user ; int ret ; BUILD_BUG_ON ( IN_CLOEXEC != O_CLOEXEC ) ; BUILD_BUG_ON ( IN_NONBLOCK != O_NONBLOCK ) ; if ( flags & ~ ( IN_CLOEXEC | IN_NONBLOCK ) ) return - EINVAL ; <S2SV_StartBug> user = get_current_user ( ) ; <S2SV_EndBug> if ( unlikely ( atomic_read ( & user -> inotify_devs ) >= inotify_max_user_instances ) ) { ret = - EMFILE ; goto out_free_uid ; } <S2SV_StartBug> group = inotify_new_group ( user , inotify_max_queued_events ) ; <S2SV_EndBug> <S2SV_StartBug> if ( IS_ERR ( group ) ) { <S2SV_EndBug> <S2SV_StartBug> ret = PTR_ERR ( group ) ; <S2SV_EndBug> goto out_free_uid ; } atomic_inc ( & user -> inotify_devs ) ; ret = anon_inode_getfd ( \"inotify\" , & inotify_fops , group , O_RDONLY | flags ) ; <S2SV_StartBug> if ( ret >= 0 ) <S2SV_EndBug> return ret ; <S2SV_StartBug> fsnotify_put_group ( group ) ; <S2SV_EndBug> atomic_dec ( & user -> inotify_devs ) ; out_free_uid : free_uid ( user ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fsnotify_group * group <S2SV_ModEnd> ; int ret <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> group = inotify_new_group <S2SV_ModStart> = inotify_new_group ( <S2SV_ModEnd> inotify_max_queued_events ) ; <S2SV_ModStart> group ) ) return <S2SV_ModEnd> PTR_ERR ( group <S2SV_ModStart> PTR_ERR ( group <S2SV_ModEnd> ) ; ret <S2SV_ModStart> if ( ret < 0 ) <S2SV_ModEnd> fsnotify_put_group ( group <S2SV_ModStart> fsnotify_put_group ( group <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7854\n\n```\nCWE-125 static size_t consume_init_expr ( ut8 * buf , ut8 * max , ut8 eoc , void * out , ut32 * offset ) { ut32 i = 0 ; while ( buf + i < max && buf [ i ] != eoc ) { <S2SV_StartBug> i += 1 ; <S2SV_EndBug> } if ( buf [ i ] != eoc ) { return 0 ; } if ( offset ) { * offset += i + 1 ; } return i + 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { i ++ <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_use_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { int reference_flag = va_arg ( args , int ) ; vp8_use_as_reference ( ctx -> cpi , reference_flag ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 static struct super_block * alloc_super ( struct file_system_type * type , int flags ) { struct super_block * s = kzalloc ( sizeof ( struct super_block ) , GFP_USER ) ; static const struct super_operations default_op ; int i ; if ( ! s ) return NULL ; if ( security_sb_alloc ( s ) ) goto fail ; <S2SV_StartBug> # ifdef CONFIG_SMP <S2SV_EndBug> s -> s_files = alloc_percpu ( struct list_head ) ; if ( ! s -> s_files ) goto fail ; <S2SV_StartBug> for_each_possible_cpu ( i ) <S2SV_EndBug> INIT_LIST_HEAD ( per_cpu_ptr ( s -> s_files , i ) ) ; # else INIT_LIST_HEAD ( & s -> s_files ) ; # endif for ( i = 0 ; i < SB_FREEZE_LEVELS ; i ++ ) { if ( percpu_counter_init ( & s -> s_writers . counter [ i ] , 0 ) < 0 ) goto fail ; <S2SV_StartBug> lockdep_init_map ( & s -> s_writers . lock_map [ i ] , sb_writers_name [ i ] , <S2SV_EndBug> & type -> s_writers_key [ i ] , 0 ) ; } init_waitqueue_head ( & s -> s_writers . wait ) ; init_waitqueue_head ( & s -> s_writers . wait_unfrozen ) ; s -> s_flags = flags ; s -> s_bdi = & default_backing_dev_info ; INIT_HLIST_NODE ( & s -> s_instances ) ; INIT_HLIST_BL_HEAD ( & s -> s_anon ) ; INIT_LIST_HEAD ( & s -> s_inodes ) ; <S2SV_StartBug> if ( list_lru_init ( & s -> s_dentry_lru ) ) <S2SV_EndBug> goto fail ; <S2SV_StartBug> if ( list_lru_init ( & s -> s_inode_lru ) ) <S2SV_EndBug> goto fail ; INIT_LIST_HEAD ( & s -> s_mounts ) ; init_rwsem ( & s -> s_umount ) ; lockdep_set_class ( & s -> s_umount , & type -> s_umount_key ) ; down_write_nested ( & s -> s_umount , SINGLE_DEPTH_NESTING ) ; s -> s_count = 1 ; atomic_set ( & s -> s_active , 1 ) ; mutex_init ( & s -> s_vfs_rename_mutex ) ; lockdep_set_class ( & s -> s_vfs_rename_mutex , & type -> s_vfs_rename_key ) ; mutex_init ( & s -> s_dquot . dqio_mutex ) ; mutex_init ( & s -> s_dquot . dqonoff_mutex ) ; init_rwsem ( & s -> s_dquot . dqptr_sem ) ; s -> s_maxbytes = MAX_NON_LFS ; s -> s_op = & default_op ; s -> s_time_gran = 1000000000 ; s -> cleancache_poolid = - 1 ; s -> s_shrink . seeks = DEFAULT_SEEKS ; s -> s_shrink . scan_objects = super_cache_scan ; s -> s_shrink . count_objects = super_cache_count ; s -> s_shrink . batch = 1024 ; s -> s_shrink . flags = SHRINKER_NUMA_AWARE ; return s ; fail : destroy_super ( s ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto fail ; for ( i = 0 ; i < SB_FREEZE_LEVELS ; i ++ ) { if ( percpu_counter_init ( & s -> s_writers . counter [ i ] , 0 ) < 0 <S2SV_ModEnd> ) goto fail <S2SV_ModStart> goto fail ; lockdep_init_map ( & s -> s_writers . lock_map [ i ] , sb_writers_name [ i ] , & type -> s_writers_key [ i ] , 0 ) ; } init_waitqueue_head ( & s -> s_writers . wait ) ; init_waitqueue_head ( & s -> s_writers . wait_unfrozen ) ; s -> s_flags = flags ; s -> s_bdi = & default_backing_dev_info ; INIT_HLIST_NODE ( & s -> s_instances ) ; INIT_HLIST_BL_HEAD ( & s -> s_anon ) ; INIT_LIST_HEAD ( & s -> s_inodes ) ; if ( list_lru_init ( & s -> s_dentry_lru ) <S2SV_ModEnd> ) goto fail <S2SV_ModStart> goto fail ; <S2SV_ModEnd> if ( list_lru_init <S2SV_ModStart> & s -> s_inode_lru <S2SV_ModEnd> ) ) goto <S2SV_ModStart> goto fail ; <S2SV_ModEnd> INIT_LIST_HEAD ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4131\n\n```\nCWE-189 static ssize_t __nfs4_get_acl_uncached ( struct inode * inode , void * buf , size_t buflen ) { <S2SV_StartBug> struct page * pages [ NFS4ACL_MAXPAGES ] ; <S2SV_EndBug> struct nfs_getaclargs args = { . fh = NFS_FH ( inode ) , . acl_pages = pages , . acl_len = buflen , } ; struct nfs_getaclres res = { . acl_len = buflen , } ; void * resp_buf ; struct rpc_message msg = { . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_GETACL ] , . rpc_argp = & args , . rpc_resp = & res , } ; <S2SV_StartBug> struct page * localpage = NULL ; <S2SV_EndBug> int ret ; if ( buflen < PAGE_SIZE ) { localpage = alloc_page ( GFP_KERNEL ) ; resp_buf = page_address ( localpage ) ; if ( localpage == NULL ) <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> args . acl_pages [ 0 ] = localpage ; args . acl_pgbase = 0 ; args . acl_len = PAGE_SIZE ; } else { resp_buf = buf ; buf_to_pages ( buf , buflen , args . acl_pages , & args . acl_pgbase ) ; } ret = nfs4_call_sync ( NFS_SERVER ( inode ) -> client , NFS_SERVER ( inode ) , & msg , & args . seq_args , & res . seq_res , 0 ) ; if ( ret ) goto out_free ; <S2SV_StartBug> if ( res . acl_len > args . acl_len ) <S2SV_EndBug> <S2SV_StartBug> nfs4_write_cached_acl ( inode , NULL , res . acl_len ) ; <S2SV_EndBug> else <S2SV_StartBug> nfs4_write_cached_acl ( inode , resp_buf , res . acl_len ) ; <S2SV_EndBug> if ( buf ) { ret = - ERANGE ; <S2SV_StartBug> if ( res . acl_len > buflen ) <S2SV_EndBug> goto out_free ; <S2SV_StartBug> if ( localpage ) <S2SV_EndBug> <S2SV_StartBug> memcpy ( buf , resp_buf , res . acl_len ) ; <S2SV_EndBug> } ret = res . acl_len ; out_free : <S2SV_StartBug> if ( localpage ) <S2SV_EndBug> <S2SV_StartBug> __free_page ( localpage ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ NFS4ACL_MAXPAGES ] = { NULL , } <S2SV_ModStart> , } ; int ret = - ENOMEM , npages , i , acl_len = 0 ; npages = ( buflen + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; if ( npages == 0 ) npages = 1 ; for ( i = 0 ; i < npages ; i ++ ) { pages [ i ] = alloc_page ( GFP_KERNEL ) ; if ( ! pages [ i ] ) goto out_free ; } if ( npages > 1 ) { args . acl_scratch = alloc_page ( GFP_KERNEL ) ; if ( ! args . acl_scratch ) goto out_free ; } args . acl_len = npages * PAGE_SIZE ; args . acl_pgbase = 0 ; if ( buf <S2SV_ModEnd> == NULL ) <S2SV_ModStart> == NULL ) res . acl_flags |= NFS4_ACL_LEN_REQUEST ; resp_buf = page_address ( pages [ 0 ] ) ; dprintk ( \"%s<S2SV_blank><S2SV_blank>buf<S2SV_blank>%p<S2SV_blank>buflen<S2SV_blank>%ld<S2SV_blank>npages<S2SV_blank>%d<S2SV_blank>args.acl_len<S2SV_blank>%ld\\\\n\" , __func__ , buf , buflen , npages , args . acl_len ) ; <S2SV_ModEnd> ret = nfs4_call_sync <S2SV_ModStart> goto out_free ; acl_len = res . acl_len - res . acl_data_offset ; if ( <S2SV_ModEnd> acl_len > args <S2SV_ModStart> , NULL , <S2SV_ModEnd> acl_len ) ; <S2SV_ModStart> inode , resp_buf + res . acl_data_offset , <S2SV_ModEnd> acl_len ) ; <S2SV_ModStart> ; if ( <S2SV_ModEnd> acl_len > buflen <S2SV_ModStart> goto out_free ; _copy_from_pages <S2SV_ModEnd> ( buf , <S2SV_ModStart> ( buf , pages , res . acl_data_offset , res . acl_len ) ; } ret = <S2SV_ModEnd> acl_len ; out_free <S2SV_ModStart> ; out_free : for ( i = 0 ; i < npages ; i ++ ) if ( pages [ i ] <S2SV_ModEnd> ) __free_page ( <S2SV_ModStart> ) __free_page ( pages [ i ] ) ; if ( args . acl_scratch ) __free_page ( args . acl_scratch <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12818\n\n```\nCWE-476 int nfc_llcp_send_cc ( struct nfc_llcp_sock * sock ) { struct nfc_llcp_local * local ; struct sk_buff * skb ; u8 * miux_tlv = NULL , miux_tlv_length ; u8 * rw_tlv = NULL , rw_tlv_length , rw ; int err ; u16 size = 0 ; __be16 miux ; pr_debug ( \"Sending<S2SV_blank>CC\\\\n\" ) ; local = sock -> local ; if ( local == NULL ) return - ENODEV ; miux = be16_to_cpu ( sock -> miux ) > LLCP_MAX_MIUX ? local -> miux : sock -> miux ; rw = sock -> rw > LLCP_MAX_RW ? local -> rw : sock -> rw ; miux_tlv = nfc_llcp_build_tlv ( LLCP_TLV_MIUX , ( u8 * ) & miux , 0 , & miux_tlv_length ) ; <S2SV_StartBug> size += miux_tlv_length ; <S2SV_EndBug> rw_tlv = nfc_llcp_build_tlv ( LLCP_TLV_RW , & rw , 0 , & rw_tlv_length ) ; <S2SV_StartBug> size += rw_tlv_length ; <S2SV_EndBug> skb = llcp_allocate_pdu ( sock , LLCP_PDU_CC , size ) ; if ( skb == NULL ) { err = - ENOMEM ; goto error_tlv ; } llcp_add_tlv ( skb , miux_tlv , miux_tlv_length ) ; llcp_add_tlv ( skb , rw_tlv , rw_tlv_length ) ; skb_queue_tail ( & local -> tx_queue , skb ) ; err = 0 ; error_tlv : if ( err ) pr_err ( \"error<S2SV_blank>%d\\\\n\" , err ) ; kfree ( miux_tlv ) ; kfree ( rw_tlv ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> miux_tlv_length ) ; if ( ! miux_tlv ) { err = - ENOMEM ; goto error_tlv ; } <S2SV_ModStart> rw_tlv_length ) ; if ( ! rw_tlv ) { err = - ENOMEM ; goto error_tlv ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 gprinc_ret * get_principal_2_svc ( gprinc_arg * arg , struct svc_req * rqstp ) { static gprinc_ret ret ; char * prime_arg , * funcname ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_gprinc_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; funcname = \"kadm5_get_principal\" ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( ! cmp_gss_krb5_name ( handle , rqst2name ( rqstp ) , arg -> princ ) && ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_INQUIRE , arg -> princ , NULL ) ) ) { ret . code = KADM5_AUTH_GET ; log_unauth ( funcname , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_get_principal ( handle , arg -> princ , & ret . rec , arg -> mask ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( funcname , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_StartBug> exit_func : <S2SV_EndBug> free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : <S2SV_ModStart> service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2304\n\n```\nCWE-22 static int cleanup_pathname ( struct archive_write_disk * a ) { char * dest , * src ; char separator = '\\\\0' ; dest = src = a -> name ; if ( * src == '\\\\0' ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Invalid<S2SV_blank>empty<S2SV_blank>pathname\" ) ; return ( ARCHIVE_FAILED ) ; } # if defined ( __CYGWIN__ ) cleanup_pathname_win ( a ) ; # endif if ( * src == '/' ) <S2SV_StartBug> separator = * src ++ ; <S2SV_EndBug> for ( ; ; ) { if ( src [ 0 ] == '\\\\0' ) { break ; } else if ( src [ 0 ] == '/' ) { src ++ ; continue ; } else if ( src [ 0 ] == '.' ) { if ( src [ 1 ] == '\\\\0' ) { break ; } else if ( src [ 1 ] == '/' ) { src += 2 ; continue ; } else if ( src [ 1 ] == '.' ) { if ( src [ 2 ] == '/' || src [ 2 ] == '\\\\0' ) { if ( a -> flags & ARCHIVE_EXTRACT_SECURE_NODOTDOT ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Path<S2SV_blank>contains<S2SV_blank>\\'..\\'\" ) ; return ( ARCHIVE_FAILED ) ; } } } } if ( separator ) * dest ++ = '/' ; while ( * src != '\\\\0' && * src != '/' ) { * dest ++ = * src ++ ; } if ( * src == '\\\\0' ) break ; separator = * src ++ ; } if ( dest == a -> name ) { if ( separator ) * dest ++ = '/' ; else * dest ++ = '.' ; } * dest = '\\\\0' ; return ( ARCHIVE_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == '/' ) { if ( a -> flags & ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Path<S2SV_blank>is<S2SV_blank>absolute\" ) ; return ( ARCHIVE_FAILED ) ; } separator = * src ++ ; } <S2SV_ModEnd> for ( ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9588\n\n```\nCWE-388 static int handle_exception ( struct kvm_vcpu * vcpu ) { struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; struct kvm_run * kvm_run = vcpu -> run ; u32 intr_info , ex_no , error_code ; unsigned long cr2 , rip , dr6 ; u32 vect_info ; enum emulation_result er ; vect_info = vmx -> idt_vectoring_info ; intr_info = vmx -> exit_intr_info ; if ( is_machine_check ( intr_info ) ) return handle_machine_check ( vcpu ) ; <S2SV_StartBug> if ( ( intr_info & INTR_INFO_INTR_TYPE_MASK ) == INTR_TYPE_NMI_INTR ) <S2SV_EndBug> return 1 ; if ( is_no_device ( intr_info ) ) { vmx_fpu_activate ( vcpu ) ; return 1 ; } if ( is_invalid_opcode ( intr_info ) ) { if ( is_guest_mode ( vcpu ) ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } er = emulate_instruction ( vcpu , EMULTYPE_TRAP_UD ) ; if ( er != EMULATE_DONE ) kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } error_code = 0 ; if ( intr_info & INTR_INFO_DELIVER_CODE_MASK ) error_code = vmcs_read32 ( VM_EXIT_INTR_ERROR_CODE ) ; if ( ( vect_info & VECTORING_INFO_VALID_MASK ) && ! ( is_page_fault ( intr_info ) && ! ( error_code & PFERR_RSVD_MASK ) ) ) { vcpu -> run -> exit_reason = KVM_EXIT_INTERNAL_ERROR ; vcpu -> run -> internal . suberror = KVM_INTERNAL_ERROR_SIMUL_EX ; vcpu -> run -> internal . ndata = 3 ; vcpu -> run -> internal . data [ 0 ] = vect_info ; vcpu -> run -> internal . data [ 1 ] = intr_info ; vcpu -> run -> internal . data [ 2 ] = error_code ; return 0 ; } if ( is_page_fault ( intr_info ) ) { BUG_ON ( enable_ept ) ; cr2 = vmcs_readl ( EXIT_QUALIFICATION ) ; trace_kvm_page_fault ( cr2 , error_code ) ; if ( kvm_event_needs_reinjection ( vcpu ) ) kvm_mmu_unprotect_page_virt ( vcpu , cr2 ) ; return kvm_mmu_page_fault ( vcpu , cr2 , error_code , NULL , 0 ) ; } ex_no = intr_info & INTR_INFO_VECTOR_MASK ; if ( vmx -> rmode . vm86_active && rmode_exception ( vcpu , ex_no ) ) return handle_rmode_exception ( vcpu , ex_no , error_code ) ; switch ( ex_no ) { case AC_VECTOR : kvm_queue_exception_e ( vcpu , AC_VECTOR , error_code ) ; return 1 ; case DB_VECTOR : dr6 = vmcs_readl ( EXIT_QUALIFICATION ) ; if ( ! ( vcpu -> guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) ) { vcpu -> arch . dr6 &= ~ 15 ; vcpu -> arch . dr6 |= dr6 | DR6_RTM ; if ( ! ( dr6 & ~ DR6_RESERVED ) ) skip_emulated_instruction ( vcpu ) ; kvm_queue_exception ( vcpu , DB_VECTOR ) ; return 1 ; } kvm_run -> debug . arch . dr6 = dr6 | DR6_FIXED_1 ; kvm_run -> debug . arch . dr7 = vmcs_readl ( GUEST_DR7 ) ; case BP_VECTOR : vmx -> vcpu . arch . event_exit_inst_len = vmcs_read32 ( VM_EXIT_INSTRUCTION_LEN ) ; kvm_run -> exit_reason = KVM_EXIT_DEBUG ; rip = kvm_rip_read ( vcpu ) ; kvm_run -> debug . arch . pc = vmcs_readl ( GUEST_CS_BASE ) + rip ; kvm_run -> debug . arch . exception = ex_no ; break ; default : kvm_run -> exit_reason = KVM_EXIT_EXCEPTION ; kvm_run -> ex . exception = ex_no ; kvm_run -> ex . error_code = error_code ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( is_nmi ( intr_info ) <S2SV_ModEnd> ) return 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 void __sock_recv_timestamp ( struct msghdr * msg , struct sock * sk , struct sk_buff * skb ) { int need_software_tstamp = sock_flag ( sk , SOCK_RCVTSTAMP ) ; struct scm_timestamping tss ; int empty = 1 ; struct skb_shared_hwtstamps * shhwtstamps = skb_hwtstamps ( skb ) ; if ( need_software_tstamp && skb -> tstamp == 0 ) __net_timestamp ( skb ) ; if ( need_software_tstamp ) { if ( ! sock_flag ( sk , SOCK_RCVTSTAMPNS ) ) { struct timeval tv ; skb_get_timestamp ( skb , & tv ) ; put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMP , sizeof ( tv ) , & tv ) ; } else { struct timespec ts ; skb_get_timestampns ( skb , & ts ) ; put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPNS , sizeof ( ts ) , & ts ) ; } } memset ( & tss , 0 , sizeof ( tss ) ) ; if ( ( sk -> sk_tsflags & SOF_TIMESTAMPING_SOFTWARE ) && ktime_to_timespec_cond ( skb -> tstamp , tss . ts + 0 ) ) empty = 0 ; if ( shhwtstamps && ( sk -> sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE ) && ktime_to_timespec_cond ( shhwtstamps -> hwtstamp , tss . ts + 2 ) ) empty = 0 ; if ( ! empty ) { put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPING , sizeof ( tss ) , & tss ) ; <S2SV_StartBug> if ( skb -> len && ( sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_STATS ) ) <S2SV_EndBug> put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPING_OPT_STATS , skb -> len , skb -> data ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( skb_is_err_queue ( skb ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20406\n\n```\nCWE-190 static PyMemoTable * PyMemoTable_Copy ( PyMemoTable * self ) { <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> PyMemoTable * new = PyMemoTable_New ( ) ; if ( new == NULL ) return NULL ; new -> mt_used = self -> mt_used ; new -> mt_allocated = self -> mt_allocated ; new -> mt_mask = self -> mt_mask ; PyMem_FREE ( new -> mt_table ) ; new -> mt_table = PyMem_NEW ( PyMemoEntry , self -> mt_allocated ) ; if ( new -> mt_table == NULL ) { PyMem_FREE ( new ) ; PyErr_NoMemory ( ) ; return NULL ; } <S2SV_StartBug> for ( i = 0 ; i < self -> mt_allocated ; i ++ ) { <S2SV_EndBug> Py_XINCREF ( self -> mt_table [ i ] . me_key ) ; } memcpy ( new -> mt_table , self -> mt_table , sizeof ( PyMemoEntry ) * self -> mt_allocated ) ; return new ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> self ) { <S2SV_ModEnd> PyMemoTable * new <S2SV_ModStart> } for ( size_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5313\n\n```\nCWE-362 static int handle_emulation_failure ( struct kvm_vcpu * vcpu ) <S2SV_StartBug> { <S2SV_EndBug> ++ vcpu -> stat . insn_emulation_fail ; <S2SV_StartBug> trace_kvm_emulate_insn_failed ( vcpu ) ; <S2SV_EndBug> vcpu -> run -> exit_reason = KVM_EXIT_INTERNAL_ERROR ; vcpu -> run -> internal . suberror = KVM_INTERNAL_ERROR_EMULATION ; vcpu -> run -> internal . ndata = 0 ; <S2SV_StartBug> kvm_queue_exception ( vcpu , UD_VECTOR ) ; <S2SV_EndBug> <S2SV_StartBug> return EMULATE_FAIL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu ) { int r = EMULATE_DONE ; <S2SV_ModStart> vcpu ) ; if ( ! is_guest_mode ( vcpu ) ) { <S2SV_ModStart> = 0 ; r = EMULATE_FAIL ; } <S2SV_ModStart> ) ; return r <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0131\n\n```\nCWE-416 struct sk_buff * skb_segment ( struct sk_buff * head_skb , netdev_features_t features ) { struct sk_buff * segs = NULL ; struct sk_buff * tail = NULL ; struct sk_buff * list_skb = skb_shinfo ( head_skb ) -> frag_list ; skb_frag_t * frag = skb_shinfo ( head_skb ) -> frags ; unsigned int mss = skb_shinfo ( head_skb ) -> gso_size ; <S2SV_StartBug> unsigned int doffset = head_skb -> data - skb_mac_header ( head_skb ) ; <S2SV_EndBug> unsigned int offset = doffset ; unsigned int tnl_hlen = skb_tnl_header_len ( head_skb ) ; unsigned int headroom ; unsigned int len ; __be16 proto ; bool csum ; int sg = ! ! ( features & NETIF_F_SG ) ; int nfrags = skb_shinfo ( head_skb ) -> nr_frags ; int err = - ENOMEM ; int i = 0 ; int pos ; proto = skb_network_protocol ( head_skb ) ; if ( unlikely ( ! proto ) ) return ERR_PTR ( - EINVAL ) ; csum = ! ! can_checksum_protocol ( features , proto ) ; __skb_push ( head_skb , doffset ) ; headroom = skb_headroom ( head_skb ) ; pos = skb_headlen ( head_skb ) ; do { struct sk_buff * nskb ; skb_frag_t * nskb_frag ; int hsize ; int size ; len = head_skb -> len - offset ; if ( len > mss ) len = mss ; hsize = skb_headlen ( head_skb ) - offset ; if ( hsize < 0 ) hsize = 0 ; if ( hsize > len || ! sg ) hsize = len ; if ( ! hsize && i >= nfrags && skb_headlen ( list_skb ) && ( skb_headlen ( list_skb ) == len || sg ) ) { BUG_ON ( skb_headlen ( list_skb ) > len ) ; i = 0 ; nfrags = skb_shinfo ( list_skb ) -> nr_frags ; frag = skb_shinfo ( list_skb ) -> frags ; <S2SV_StartBug> pos += skb_headlen ( list_skb ) ; <S2SV_EndBug> while ( pos < offset + len ) { BUG_ON ( i >= nfrags ) ; size = skb_frag_size ( frag ) ; if ( pos + size > offset + len ) break ; i ++ ; pos += size ; frag ++ ; } nskb = skb_clone ( list_skb , GFP_ATOMIC ) ; list_skb = list_skb -> next ; if ( unlikely ( ! nskb ) ) goto err ; if ( unlikely ( pskb_trim ( nskb , len ) ) ) { kfree_skb ( nskb ) ; goto err ; } hsize = skb_end_offset ( nskb ) ; if ( skb_cow_head ( nskb , doffset + headroom ) ) { kfree_skb ( nskb ) ; goto err ; } nskb -> truesize += skb_end_offset ( nskb ) - hsize ; skb_release_head_state ( nskb ) ; __skb_push ( nskb , doffset ) ; } else { nskb = __alloc_skb ( hsize + doffset + headroom , GFP_ATOMIC , skb_alloc_rx_flag ( head_skb ) , NUMA_NO_NODE ) ; if ( unlikely ( ! nskb ) ) goto err ; skb_reserve ( nskb , headroom ) ; __skb_put ( nskb , doffset ) ; } if ( segs ) tail -> next = nskb ; else segs = nskb ; tail = nskb ; __copy_skb_header ( nskb , head_skb ) ; nskb -> mac_len = head_skb -> mac_len ; skb_headers_offset_update ( nskb , skb_headroom ( nskb ) - headroom ) ; skb_copy_from_linear_data_offset ( head_skb , - tnl_hlen , nskb -> data - tnl_hlen , doffset + tnl_hlen ) ; if ( nskb -> len == len + doffset ) goto perform_csum_check ; if ( ! sg ) { nskb -> ip_summed = CHECKSUM_NONE ; nskb -> csum = skb_copy_and_csum_bits ( head_skb , offset , skb_put ( nskb , len ) , len , 0 ) ; continue ; } nskb_frag = skb_shinfo ( nskb ) -> frags ; skb_copy_from_linear_data_offset ( head_skb , offset , skb_put ( nskb , hsize ) , hsize ) ; skb_shinfo ( nskb ) -> tx_flags = skb_shinfo ( head_skb ) -> tx_flags & SKBTX_SHARED_FRAG ; while ( pos < offset + len ) { if ( i >= nfrags ) { BUG_ON ( skb_headlen ( list_skb ) ) ; i = 0 ; nfrags = skb_shinfo ( list_skb ) -> nr_frags ; frag = skb_shinfo ( list_skb ) -> frags ; <S2SV_StartBug> BUG_ON ( ! nfrags ) ; <S2SV_EndBug> list_skb = list_skb -> next ; } if ( unlikely ( skb_shinfo ( nskb ) -> nr_frags >= MAX_SKB_FRAGS ) ) { net_warn_ratelimited ( \"skb_segment:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>frags:<S2SV_blank>%u<S2SV_blank>%u\\\\n\" , pos , mss ) ; goto err ; } <S2SV_StartBug> * nskb_frag = * frag ; <S2SV_EndBug> __skb_frag_ref ( nskb_frag ) ; size = skb_frag_size ( nskb_frag ) ; if ( pos < offset ) { nskb_frag -> page_offset += offset - pos ; skb_frag_size_sub ( nskb_frag , offset - pos ) ; } skb_shinfo ( nskb ) -> nr_frags ++ ; if ( pos + size <= offset + len ) { i ++ ; frag ++ ; pos += size ; } else { skb_frag_size_sub ( nskb_frag , pos + size - ( offset + len ) ) ; goto skip_fraglist ; } nskb_frag ++ ; } skip_fraglist : nskb -> data_len = len - hsize ; nskb -> len += nskb -> data_len ; nskb -> truesize += nskb -> data_len ; perform_csum_check : if ( ! csum ) { nskb -> csum = skb_checksum ( nskb , doffset , nskb -> len - doffset , 0 ) ; nskb -> ip_summed = CHECKSUM_NONE ; } } while ( ( offset += len ) < head_skb -> len ) ; return segs ; err : kfree_skb_list ( segs ) ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( head_skb ) ; struct sk_buff * frag_skb = head_skb <S2SV_ModStart> -> frags ; frag_skb = list_skb ; <S2SV_ModStart> -> frags ; frag_skb = list_skb ; <S2SV_ModStart> err ; } if ( unlikely ( skb_orphan_frags ( frag_skb , GFP_ATOMIC ) ) ) goto err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int jas_matrix_cmp ( jas_matrix_t * mat0 , jas_matrix_t * mat1 ) { <S2SV_StartBug> int i ; <S2SV_EndBug> int j ; if ( mat0 -> numrows_ != mat1 -> numrows_ || mat0 -> numcols_ != mat1 -> numcols_ ) { return 1 ; } for ( i = 0 ; i < mat0 -> numrows_ ; i ++ ) { for ( j = 0 ; j < mat0 -> numcols_ ; j ++ ) { if ( jas_matrix_get ( mat0 , i , j ) != jas_matrix_get ( mat1 , i , j ) ) { return 1 ; } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mat1 ) { jas_matind_t i ; jas_matind_t <S2SV_ModEnd> j ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-94(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8284\n\n```\nCWE-94 static target_ulong disas_insn ( CPUX86State * env , DisasContext * s , target_ulong pc_start ) { int b , prefixes ; int shift ; TCGMemOp ot , aflag , dflag ; int modrm , reg , rm , mod , op , opreg , val ; target_ulong next_eip , tval ; int rex_w , rex_r ; s -> pc_start = s -> pc = pc_start ; prefixes = 0 ; s -> override = - 1 ; rex_w = - 1 ; rex_r = 0 ; # ifdef TARGET_X86_64 s -> rex_x = 0 ; s -> rex_b = 0 ; x86_64_hregs = 0 ; # endif s -> rip_offset = 0 ; s -> vex_l = 0 ; s -> vex_v = 0 ; <S2SV_StartBug> next_byte : <S2SV_EndBug> b = cpu_ldub_code ( env , s -> pc ) ; s -> pc ++ ; switch ( b ) { case 0xf3 : prefixes |= PREFIX_REPZ ; goto next_byte ; case 0xf2 : prefixes |= PREFIX_REPNZ ; goto next_byte ; case 0xf0 : prefixes |= PREFIX_LOCK ; goto next_byte ; case 0x2e : s -> override = R_CS ; goto next_byte ; case 0x36 : s -> override = R_SS ; goto next_byte ; case 0x3e : s -> override = R_DS ; goto next_byte ; case 0x26 : s -> override = R_ES ; goto next_byte ; case 0x64 : s -> override = R_FS ; goto next_byte ; case 0x65 : s -> override = R_GS ; goto next_byte ; case 0x66 : prefixes |= PREFIX_DATA ; goto next_byte ; case 0x67 : prefixes |= PREFIX_ADR ; goto next_byte ; # ifdef TARGET_X86_64 case 0x40 ... 0x4f : if ( CODE64 ( s ) ) { rex_w = ( b >> 3 ) & 1 ; rex_r = ( b & 0x4 ) << 1 ; s -> rex_x = ( b & 0x2 ) << 2 ; REX_B ( s ) = ( b & 0x1 ) << 3 ; x86_64_hregs = 1 ; goto next_byte ; } break ; # endif case 0xc5 : case 0xc4 : if ( s -> code32 && ! s -> vm86 ) { static const int pp_prefix [ 4 ] = { 0 , PREFIX_DATA , PREFIX_REPZ , PREFIX_REPNZ } ; int vex3 , vex2 = cpu_ldub_code ( env , s -> pc ) ; if ( ! CODE64 ( s ) && ( vex2 & 0xc0 ) != 0xc0 ) { break ; } s -> pc ++ ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ | PREFIX_LOCK | PREFIX_DATA ) ) { goto illegal_op ; } # ifdef TARGET_X86_64 if ( x86_64_hregs ) { goto illegal_op ; } # endif rex_r = ( ~ vex2 >> 4 ) & 8 ; if ( b == 0xc5 ) { vex3 = vex2 ; b = cpu_ldub_code ( env , s -> pc ++ ) ; } else { # ifdef TARGET_X86_64 s -> rex_x = ( ~ vex2 >> 3 ) & 8 ; s -> rex_b = ( ~ vex2 >> 2 ) & 8 ; # endif vex3 = cpu_ldub_code ( env , s -> pc ++ ) ; rex_w = ( vex3 >> 7 ) & 1 ; switch ( vex2 & 0x1f ) { case 0x01 : b = cpu_ldub_code ( env , s -> pc ++ ) | 0x100 ; break ; case 0x02 : b = 0x138 ; break ; case 0x03 : b = 0x13a ; break ; default : goto unknown_op ; } } s -> vex_v = ( ~ vex3 >> 3 ) & 0xf ; s -> vex_l = ( vex3 >> 2 ) & 1 ; prefixes |= pp_prefix [ vex3 & 3 ] | PREFIX_VEX ; } break ; } if ( CODE64 ( s ) ) { dflag = ( rex_w > 0 ? MO_64 : prefixes & PREFIX_DATA ? MO_16 : MO_32 ) ; aflag = ( prefixes & PREFIX_ADR ? MO_32 : MO_64 ) ; } else { if ( s -> code32 ^ ( ( prefixes & PREFIX_DATA ) != 0 ) ) { dflag = MO_32 ; } else { dflag = MO_16 ; } if ( s -> code32 ^ ( ( prefixes & PREFIX_ADR ) != 0 ) ) { aflag = MO_32 ; } else { aflag = MO_16 ; } } s -> prefix = prefixes ; s -> aflag = aflag ; s -> dflag = dflag ; reswitch : switch ( b ) { case 0x0f : b = cpu_ldub_code ( env , s -> pc ++ ) | 0x100 ; goto reswitch ; case 0x00 ... 0x05 : case 0x08 ... 0x0d : case 0x10 ... 0x15 : case 0x18 ... 0x1d : case 0x20 ... 0x25 : case 0x28 ... 0x2d : case 0x30 ... 0x35 : case 0x38 ... 0x3d : { int op , f , val ; op = ( b >> 3 ) & 7 ; f = ( b >> 1 ) & 3 ; ot = mo_b_d ( b , dflag ) ; switch ( f ) { case 0 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; opreg = OR_TMP0 ; } else if ( op == OP_XORL && rm == reg ) { xor_zero : set_cc_op ( s , CC_OP_CLR ) ; tcg_gen_movi_tl ( cpu_T0 , 0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; break ; } else { opreg = rm ; } gen_op_mov_v_reg ( ot , cpu_T1 , reg ) ; gen_op ( s , op , ot , opreg ) ; break ; case 1 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; } else if ( op == OP_XORL && rm == reg ) { goto xor_zero ; } else { gen_op_mov_v_reg ( ot , cpu_T1 , rm ) ; } gen_op ( s , op , ot , reg ) ; break ; case 2 : val = insn_get ( env , s , ot ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; gen_op ( s , op , ot , OR_EAX ) ; break ; } } break ; case 0x82 : if ( CODE64 ( s ) ) goto illegal_op ; case 0x80 : case 0x81 : case 0x83 : { int val ; ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; op = ( modrm >> 3 ) & 7 ; if ( mod != 3 ) { if ( b == 0x83 ) s -> rip_offset = 1 ; else s -> rip_offset = insn_const_size ( ot ) ; gen_lea_modrm ( env , s , modrm ) ; opreg = OR_TMP0 ; } else { opreg = rm ; } switch ( b ) { default : case 0x80 : case 0x81 : case 0x82 : val = insn_get ( env , s , ot ) ; break ; case 0x83 : val = ( int8_t ) insn_get ( env , s , MO_8 ) ; break ; } tcg_gen_movi_tl ( cpu_T1 , val ) ; gen_op ( s , op , ot , opreg ) ; } break ; case 0x40 ... 0x47 : ot = dflag ; gen_inc ( s , ot , OR_EAX + ( b & 7 ) , 1 ) ; break ; case 0x48 ... 0x4f : ot = dflag ; gen_inc ( s , ot , OR_EAX + ( b & 7 ) , - 1 ) ; break ; case 0xf6 : case 0xf7 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; op = ( modrm >> 3 ) & 7 ; if ( mod != 3 ) { if ( op == 0 ) { s -> rip_offset = insn_const_size ( ot ) ; } gen_lea_modrm ( env , s , modrm ) ; if ( ! ( s -> prefix & PREFIX_LOCK ) || op != 2 ) { gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; } } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; } switch ( op ) { case 0 : val = insn_get ( env , s , ot ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; gen_op_testl_T0_T1_cc ( ) ; set_cc_op ( s , CC_OP_LOGICB + ot ) ; break ; case 2 : if ( s -> prefix & PREFIX_LOCK ) { if ( mod == 3 ) { goto illegal_op ; } tcg_gen_movi_tl ( cpu_T0 , ~ 0 ) ; tcg_gen_atomic_xor_fetch_tl ( cpu_T0 , cpu_A0 , cpu_T0 , s -> mem_index , ot | MO_LE ) ; } else { tcg_gen_not_tl ( cpu_T0 , cpu_T0 ) ; if ( mod != 3 ) { gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } } break ; case 3 : if ( s -> prefix & PREFIX_LOCK ) { TCGLabel * label1 ; TCGv a0 , t0 , t1 , t2 ; if ( mod == 3 ) { goto illegal_op ; } a0 = tcg_temp_local_new ( ) ; t0 = tcg_temp_local_new ( ) ; label1 = gen_new_label ( ) ; tcg_gen_mov_tl ( a0 , cpu_A0 ) ; tcg_gen_mov_tl ( t0 , cpu_T0 ) ; gen_set_label ( label1 ) ; t1 = tcg_temp_new ( ) ; t2 = tcg_temp_new ( ) ; tcg_gen_mov_tl ( t2 , t0 ) ; tcg_gen_neg_tl ( t1 , t0 ) ; tcg_gen_atomic_cmpxchg_tl ( t0 , a0 , t0 , t1 , s -> mem_index , ot | MO_LE ) ; tcg_temp_free ( t1 ) ; tcg_gen_brcond_tl ( TCG_COND_NE , t0 , t2 , label1 ) ; tcg_temp_free ( t2 ) ; tcg_temp_free ( a0 ) ; tcg_gen_mov_tl ( cpu_T0 , t0 ) ; tcg_temp_free ( t0 ) ; } else { tcg_gen_neg_tl ( cpu_T0 , cpu_T0 ) ; if ( mod != 3 ) { gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } } gen_op_update_neg_cc ( ) ; set_cc_op ( s , CC_OP_SUBB + ot ) ; break ; case 4 : switch ( ot ) { case MO_8 : gen_op_mov_v_reg ( MO_8 , cpu_T1 , R_EAX ) ; tcg_gen_ext8u_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext8u_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_andi_tl ( cpu_cc_src , cpu_T0 , 0xff00 ) ; set_cc_op ( s , CC_OP_MULB ) ; break ; case MO_16 : gen_op_mov_v_reg ( MO_16 , cpu_T1 , R_EAX ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext16u_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_shri_tl ( cpu_T0 , cpu_T0 , 16 ) ; gen_op_mov_reg_v ( MO_16 , R_EDX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_src , cpu_T0 ) ; set_cc_op ( s , CC_OP_MULW ) ; break ; default : case MO_32 : tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_regs [ R_EAX ] ) ; tcg_gen_mulu2_i32 ( cpu_tmp2_i32 , cpu_tmp3_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ R_EAX ] , cpu_tmp2_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ R_EDX ] , cpu_tmp3_i32 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ R_EAX ] ) ; tcg_gen_mov_tl ( cpu_cc_src , cpu_regs [ R_EDX ] ) ; set_cc_op ( s , CC_OP_MULL ) ; break ; # ifdef TARGET_X86_64 case MO_64 : tcg_gen_mulu2_i64 ( cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] , cpu_T0 , cpu_regs [ R_EAX ] ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ R_EAX ] ) ; tcg_gen_mov_tl ( cpu_cc_src , cpu_regs [ R_EDX ] ) ; set_cc_op ( s , CC_OP_MULQ ) ; break ; # endif } break ; case 5 : switch ( ot ) { case MO_8 : gen_op_mov_v_reg ( MO_8 , cpu_T1 , R_EAX ) ; tcg_gen_ext8s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext8s_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_ext8s_tl ( cpu_tmp0 , cpu_T0 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_T0 , cpu_tmp0 ) ; set_cc_op ( s , CC_OP_MULB ) ; break ; case MO_16 : gen_op_mov_v_reg ( MO_16 , cpu_T1 , R_EAX ) ; tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext16s_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_ext16s_tl ( cpu_tmp0 , cpu_T0 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_T0 , cpu_tmp0 ) ; tcg_gen_shri_tl ( cpu_T0 , cpu_T0 , 16 ) ; gen_op_mov_reg_v ( MO_16 , R_EDX , cpu_T0 ) ; set_cc_op ( s , CC_OP_MULW ) ; break ; default : case MO_32 : tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_regs [ R_EAX ] ) ; tcg_gen_muls2_i32 ( cpu_tmp2_i32 , cpu_tmp3_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ R_EAX ] , cpu_tmp2_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ R_EDX ] , cpu_tmp3_i32 ) ; tcg_gen_sari_i32 ( cpu_tmp2_i32 , cpu_tmp2_i32 , 31 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ R_EAX ] ) ; tcg_gen_sub_i32 ( cpu_tmp2_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_cc_src , cpu_tmp2_i32 ) ; set_cc_op ( s , CC_OP_MULL ) ; break ; # ifdef TARGET_X86_64 case MO_64 : tcg_gen_muls2_i64 ( cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] , cpu_T0 , cpu_regs [ R_EAX ] ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ R_EAX ] ) ; tcg_gen_sari_tl ( cpu_cc_src , cpu_regs [ R_EAX ] , 63 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_cc_src , cpu_regs [ R_EDX ] ) ; set_cc_op ( s , CC_OP_MULQ ) ; break ; # endif } break ; case 6 : switch ( ot ) { case MO_8 : gen_helper_divb_AL ( cpu_env , cpu_T0 ) ; break ; case MO_16 : gen_helper_divw_AX ( cpu_env , cpu_T0 ) ; break ; default : case MO_32 : gen_helper_divl_EAX ( cpu_env , cpu_T0 ) ; break ; # ifdef TARGET_X86_64 case MO_64 : gen_helper_divq_EAX ( cpu_env , cpu_T0 ) ; break ; # endif } break ; case 7 : switch ( ot ) { case MO_8 : gen_helper_idivb_AL ( cpu_env , cpu_T0 ) ; break ; case MO_16 : gen_helper_idivw_AX ( cpu_env , cpu_T0 ) ; break ; default : case MO_32 : gen_helper_idivl_EAX ( cpu_env , cpu_T0 ) ; break ; # ifdef TARGET_X86_64 case MO_64 : gen_helper_idivq_EAX ( cpu_env , cpu_T0 ) ; break ; # endif } break ; default : goto unknown_op ; } break ; case 0xfe : case 0xff : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; op = ( modrm >> 3 ) & 7 ; if ( op >= 2 && b == 0xfe ) { goto unknown_op ; } if ( CODE64 ( s ) ) { if ( op == 2 || op == 4 ) { ot = MO_64 ; } else if ( op == 3 || op == 5 ) { ot = dflag != MO_16 ? MO_32 + ( rex_w == 1 ) : MO_16 ; } else if ( op == 6 ) { ot = mo_pushpop ( s , dflag ) ; } } if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; if ( op >= 2 && op != 3 && op != 5 ) gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; } switch ( op ) { case 0 : if ( mod != 3 ) opreg = OR_TMP0 ; else opreg = rm ; gen_inc ( s , ot , opreg , 1 ) ; break ; case 1 : if ( mod != 3 ) opreg = OR_TMP0 ; else opreg = rm ; gen_inc ( s , ot , opreg , - 1 ) ; break ; case 2 : if ( dflag == MO_16 ) { tcg_gen_ext16u_tl ( cpu_T0 , cpu_T0 ) ; } next_eip = s -> pc - s -> cs_base ; tcg_gen_movi_tl ( cpu_T1 , next_eip ) ; gen_push_v ( s , cpu_T1 ) ; gen_op_jmp_v ( cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_eob ( s ) ; break ; case 3 : gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 1 << ot ) ; gen_op_ld_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; do_lcall : if ( s -> pe && ! s -> vm86 ) { tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_lcall_protected ( cpu_env , cpu_tmp2_i32 , cpu_T1 , tcg_const_i32 ( dflag - 1 ) , tcg_const_tl ( s -> pc - s -> cs_base ) ) ; } else { tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_lcall_real ( cpu_env , cpu_tmp2_i32 , cpu_T1 , tcg_const_i32 ( dflag - 1 ) , tcg_const_i32 ( s -> pc - s -> cs_base ) ) ; } gen_eob ( s ) ; break ; case 4 : if ( dflag == MO_16 ) { tcg_gen_ext16u_tl ( cpu_T0 , cpu_T0 ) ; } gen_op_jmp_v ( cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_eob ( s ) ; break ; case 5 : gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 1 << ot ) ; gen_op_ld_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; do_ljmp : if ( s -> pe && ! s -> vm86 ) { tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_ljmp_protected ( cpu_env , cpu_tmp2_i32 , cpu_T1 , tcg_const_tl ( s -> pc - s -> cs_base ) ) ; } else { gen_op_movl_seg_T0_vm ( R_CS ) ; gen_op_jmp_v ( cpu_T1 ) ; } gen_eob ( s ) ; break ; case 6 : gen_push_v ( s , cpu_T0 ) ; break ; default : goto unknown_op ; } break ; case 0x84 : case 0x85 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; gen_op_mov_v_reg ( ot , cpu_T1 , reg ) ; gen_op_testl_T0_T1_cc ( ) ; set_cc_op ( s , CC_OP_LOGICB + ot ) ; break ; case 0xa8 : case 0xa9 : ot = mo_b_d ( b , dflag ) ; val = insn_get ( env , s , ot ) ; gen_op_mov_v_reg ( ot , cpu_T0 , OR_EAX ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; gen_op_testl_T0_T1_cc ( ) ; set_cc_op ( s , CC_OP_LOGICB + ot ) ; break ; case 0x98 : switch ( dflag ) { # ifdef TARGET_X86_64 case MO_64 : gen_op_mov_v_reg ( MO_32 , cpu_T0 , R_EAX ) ; tcg_gen_ext32s_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_64 , R_EAX , cpu_T0 ) ; break ; # endif case MO_32 : gen_op_mov_v_reg ( MO_16 , cpu_T0 , R_EAX ) ; tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_32 , R_EAX , cpu_T0 ) ; break ; case MO_16 : gen_op_mov_v_reg ( MO_8 , cpu_T0 , R_EAX ) ; tcg_gen_ext8s_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; break ; default : tcg_abort ( ) ; } break ; case 0x99 : switch ( dflag ) { # ifdef TARGET_X86_64 case MO_64 : gen_op_mov_v_reg ( MO_64 , cpu_T0 , R_EAX ) ; tcg_gen_sari_tl ( cpu_T0 , cpu_T0 , 63 ) ; gen_op_mov_reg_v ( MO_64 , R_EDX , cpu_T0 ) ; break ; # endif case MO_32 : gen_op_mov_v_reg ( MO_32 , cpu_T0 , R_EAX ) ; tcg_gen_ext32s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_sari_tl ( cpu_T0 , cpu_T0 , 31 ) ; gen_op_mov_reg_v ( MO_32 , R_EDX , cpu_T0 ) ; break ; case MO_16 : gen_op_mov_v_reg ( MO_16 , cpu_T0 , R_EAX ) ; tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_sari_tl ( cpu_T0 , cpu_T0 , 15 ) ; gen_op_mov_reg_v ( MO_16 , R_EDX , cpu_T0 ) ; break ; default : tcg_abort ( ) ; } break ; case 0x1af : case 0x69 : case 0x6b : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( b == 0x69 ) s -> rip_offset = insn_const_size ( ot ) ; else if ( b == 0x6b ) s -> rip_offset = 1 ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; if ( b == 0x69 ) { val = insn_get ( env , s , ot ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; } else if ( b == 0x6b ) { val = ( int8_t ) insn_get ( env , s , MO_8 ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; } else { gen_op_mov_v_reg ( ot , cpu_T1 , reg ) ; } switch ( ot ) { # ifdef TARGET_X86_64 case MO_64 : tcg_gen_muls2_i64 ( cpu_regs [ reg ] , cpu_T1 , cpu_T0 , cpu_T1 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ reg ] ) ; tcg_gen_sari_tl ( cpu_cc_src , cpu_cc_dst , 63 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_cc_src , cpu_T1 ) ; break ; # endif case MO_32 : tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_T1 ) ; tcg_gen_muls2_i32 ( cpu_tmp2_i32 , cpu_tmp3_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_regs [ reg ] , cpu_tmp2_i32 ) ; tcg_gen_sari_i32 ( cpu_tmp2_i32 , cpu_tmp2_i32 , 31 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_regs [ reg ] ) ; tcg_gen_sub_i32 ( cpu_tmp2_i32 , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; tcg_gen_extu_i32_tl ( cpu_cc_src , cpu_tmp2_i32 ) ; break ; default : tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_ext16s_tl ( cpu_T1 , cpu_T1 ) ; tcg_gen_mul_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; tcg_gen_ext16s_tl ( cpu_tmp0 , cpu_T0 ) ; tcg_gen_sub_tl ( cpu_cc_src , cpu_T0 , cpu_tmp0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; break ; } set_cc_op ( s , CC_OP_MULB + ot ) ; break ; case 0x1c0 : case 0x1c1 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; gen_op_mov_v_reg ( ot , cpu_T0 , reg ) ; if ( mod == 3 ) { rm = ( modrm & 7 ) | REX_B ( s ) ; gen_op_mov_v_reg ( ot , cpu_T1 , rm ) ; tcg_gen_add_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } else { gen_lea_modrm ( env , s , modrm ) ; if ( s -> prefix & PREFIX_LOCK ) { tcg_gen_atomic_fetch_add_tl ( cpu_T1 , cpu_A0 , cpu_T0 , s -> mem_index , ot | MO_LE ) ; tcg_gen_add_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; } else { gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; tcg_gen_add_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; } gen_op_update2_cc ( ) ; set_cc_op ( s , CC_OP_ADDB + ot ) ; break ; case 0x1b0 : case 0x1b1 : { TCGv oldv , newv , cmpv ; ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; oldv = tcg_temp_new ( ) ; newv = tcg_temp_new ( ) ; cmpv = tcg_temp_new ( ) ; gen_op_mov_v_reg ( ot , newv , reg ) ; tcg_gen_mov_tl ( cmpv , cpu_regs [ R_EAX ] ) ; if ( s -> prefix & PREFIX_LOCK ) { if ( mod == 3 ) { goto illegal_op ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_atomic_cmpxchg_tl ( oldv , cpu_A0 , cmpv , newv , s -> mem_index , ot | MO_LE ) ; gen_op_mov_reg_v ( ot , R_EAX , oldv ) ; } else { if ( mod == 3 ) { rm = ( modrm & 7 ) | REX_B ( s ) ; gen_op_mov_v_reg ( ot , oldv , rm ) ; } else { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , ot , oldv , cpu_A0 ) ; rm = 0 ; } gen_extu ( ot , oldv ) ; gen_extu ( ot , cmpv ) ; tcg_gen_movcond_tl ( TCG_COND_EQ , newv , oldv , cmpv , newv , oldv ) ; if ( mod == 3 ) { gen_op_mov_reg_v ( ot , R_EAX , oldv ) ; gen_op_mov_reg_v ( ot , rm , newv ) ; } else { gen_op_st_v ( s , ot , newv , cpu_A0 ) ; gen_op_mov_reg_v ( ot , R_EAX , oldv ) ; } } tcg_gen_mov_tl ( cpu_cc_src , oldv ) ; tcg_gen_mov_tl ( cpu_cc_srcT , cmpv ) ; tcg_gen_sub_tl ( cpu_cc_dst , cmpv , oldv ) ; set_cc_op ( s , CC_OP_SUBB + ot ) ; tcg_temp_free ( oldv ) ; tcg_temp_free ( newv ) ; tcg_temp_free ( cmpv ) ; } break ; case 0x1c7 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( ( mod == 3 ) || ( ( modrm & 0x38 ) != 0x8 ) ) goto illegal_op ; # ifdef TARGET_X86_64 if ( dflag == MO_64 ) { if ( ! ( s -> cpuid_ext_features & CPUID_EXT_CX16 ) ) goto illegal_op ; gen_lea_modrm ( env , s , modrm ) ; if ( ( s -> prefix & PREFIX_LOCK ) && parallel_cpus ) { gen_helper_cmpxchg16b ( cpu_env , cpu_A0 ) ; } else { gen_helper_cmpxchg16b_unlocked ( cpu_env , cpu_A0 ) ; } } else # endif { if ( ! ( s -> cpuid_features & CPUID_CX8 ) ) goto illegal_op ; gen_lea_modrm ( env , s , modrm ) ; if ( ( s -> prefix & PREFIX_LOCK ) && parallel_cpus ) { gen_helper_cmpxchg8b ( cpu_env , cpu_A0 ) ; } else { gen_helper_cmpxchg8b_unlocked ( cpu_env , cpu_A0 ) ; } } set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x50 ... 0x57 : gen_op_mov_v_reg ( MO_32 , cpu_T0 , ( b & 7 ) | REX_B ( s ) ) ; gen_push_v ( s , cpu_T0 ) ; break ; case 0x58 ... 0x5f : ot = gen_pop_T0 ( s ) ; gen_pop_update ( s , ot ) ; gen_op_mov_reg_v ( ot , ( b & 7 ) | REX_B ( s ) , cpu_T0 ) ; break ; case 0x60 : if ( CODE64 ( s ) ) goto illegal_op ; gen_pusha ( s ) ; break ; case 0x61 : if ( CODE64 ( s ) ) goto illegal_op ; gen_popa ( s ) ; break ; case 0x68 : case 0x6a : ot = mo_pushpop ( s , dflag ) ; if ( b == 0x68 ) val = insn_get ( env , s , ot ) ; else val = ( int8_t ) insn_get ( env , s , MO_8 ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_push_v ( s , cpu_T0 ) ; break ; case 0x8f : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; ot = gen_pop_T0 ( s ) ; if ( mod == 3 ) { gen_pop_update ( s , ot ) ; rm = ( modrm & 7 ) | REX_B ( s ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } else { s -> popl_esp_hack = 1 << ot ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; s -> popl_esp_hack = 0 ; gen_pop_update ( s , ot ) ; } break ; case 0xc8 : { int level ; val = cpu_lduw_code ( env , s -> pc ) ; s -> pc += 2 ; level = cpu_ldub_code ( env , s -> pc ++ ) ; gen_enter ( s , val , level ) ; } break ; case 0xc9 : gen_leave ( s ) ; break ; case 0x06 : case 0x0e : case 0x16 : case 0x1e : if ( CODE64 ( s ) ) goto illegal_op ; gen_op_movl_T0_seg ( b >> 3 ) ; gen_push_v ( s , cpu_T0 ) ; break ; case 0x1a0 : case 0x1a8 : gen_op_movl_T0_seg ( ( b >> 3 ) & 7 ) ; gen_push_v ( s , cpu_T0 ) ; break ; case 0x07 : case 0x17 : case 0x1f : if ( CODE64 ( s ) ) goto illegal_op ; reg = b >> 3 ; ot = gen_pop_T0 ( s ) ; gen_movl_seg_T0 ( s , reg ) ; gen_pop_update ( s , ot ) ; if ( s -> is_jmp ) { gen_jmp_im ( s -> pc - s -> cs_base ) ; if ( reg == R_SS ) { s -> tf = 0 ; gen_eob_inhibit_irq ( s , true ) ; } else { gen_eob ( s ) ; } } break ; case 0x1a1 : case 0x1a9 : ot = gen_pop_T0 ( s ) ; gen_movl_seg_T0 ( s , ( b >> 3 ) & 7 ) ; gen_pop_update ( s , ot ) ; if ( s -> is_jmp ) { gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } break ; case 0x88 : case 0x89 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , reg , 1 ) ; break ; case 0xc6 : case 0xc7 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( mod != 3 ) { s -> rip_offset = insn_const_size ( ot ) ; gen_lea_modrm ( env , s , modrm ) ; } val = insn_get ( env , s , ot ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; if ( mod != 3 ) { gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_reg_v ( ot , ( modrm & 7 ) | REX_B ( s ) , cpu_T0 ) ; } break ; case 0x8a : case 0x8b : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; break ; case 0x8e : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( modrm >> 3 ) & 7 ; if ( reg >= 6 || reg == R_CS ) goto illegal_op ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; gen_movl_seg_T0 ( s , reg ) ; if ( s -> is_jmp ) { gen_jmp_im ( s -> pc - s -> cs_base ) ; if ( reg == R_SS ) { s -> tf = 0 ; gen_eob_inhibit_irq ( s , true ) ; } else { gen_eob ( s ) ; } } break ; case 0x8c : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( modrm >> 3 ) & 7 ; mod = ( modrm >> 6 ) & 3 ; if ( reg >= 6 ) goto illegal_op ; gen_op_movl_T0_seg ( reg ) ; ot = mod == 3 ? dflag : MO_16 ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; break ; case 0x1b6 : case 0x1b7 : case 0x1be : case 0x1bf : { TCGMemOp d_ot ; TCGMemOp s_ot ; d_ot = dflag ; ot = ( b & 1 ) + MO_8 ; s_ot = b & 8 ? MO_SIGN | ot : ot ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod == 3 ) { if ( s_ot == MO_SB && byte_reg_is_xH ( rm ) ) { tcg_gen_sextract_tl ( cpu_T0 , cpu_regs [ rm - 4 ] , 8 , 8 ) ; } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; switch ( s_ot ) { case MO_UB : tcg_gen_ext8u_tl ( cpu_T0 , cpu_T0 ) ; break ; case MO_SB : tcg_gen_ext8s_tl ( cpu_T0 , cpu_T0 ) ; break ; case MO_UW : tcg_gen_ext16u_tl ( cpu_T0 , cpu_T0 ) ; break ; default : case MO_SW : tcg_gen_ext16s_tl ( cpu_T0 , cpu_T0 ) ; break ; } } gen_op_mov_reg_v ( d_ot , reg , cpu_T0 ) ; } else { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , s_ot , cpu_T0 , cpu_A0 ) ; gen_op_mov_reg_v ( d_ot , reg , cpu_T0 ) ; } } break ; case 0x8d : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; { AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; TCGv ea = gen_lea_modrm_1 ( a ) ; gen_lea_v_seg ( s , s -> aflag , ea , - 1 , - 1 ) ; gen_op_mov_reg_v ( dflag , reg , cpu_A0 ) ; } break ; case 0xa0 : case 0xa1 : case 0xa2 : case 0xa3 : { target_ulong offset_addr ; ot = mo_b_d ( b , dflag ) ; switch ( s -> aflag ) { # ifdef TARGET_X86_64 case MO_64 : offset_addr = cpu_ldq_code ( env , s -> pc ) ; s -> pc += 8 ; break ; # endif default : offset_addr = insn_get ( env , s , s -> aflag ) ; break ; } tcg_gen_movi_tl ( cpu_A0 , offset_addr ) ; gen_add_A0_ds_seg ( s ) ; if ( ( b & 2 ) == 0 ) { gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; gen_op_mov_reg_v ( ot , R_EAX , cpu_T0 ) ; } else { gen_op_mov_v_reg ( ot , cpu_T0 , R_EAX ) ; gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } } break ; case 0xd7 : tcg_gen_mov_tl ( cpu_A0 , cpu_regs [ R_EBX ] ) ; tcg_gen_ext8u_tl ( cpu_T0 , cpu_regs [ R_EAX ] ) ; tcg_gen_add_tl ( cpu_A0 , cpu_A0 , cpu_T0 ) ; gen_extu ( s -> aflag , cpu_A0 ) ; gen_add_A0_ds_seg ( s ) ; gen_op_ld_v ( s , MO_8 , cpu_T0 , cpu_A0 ) ; gen_op_mov_reg_v ( MO_8 , R_EAX , cpu_T0 ) ; break ; case 0xb0 ... 0xb7 : val = insn_get ( env , s , MO_8 ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_op_mov_reg_v ( MO_8 , ( b & 7 ) | REX_B ( s ) , cpu_T0 ) ; break ; case 0xb8 ... 0xbf : # ifdef TARGET_X86_64 if ( dflag == MO_64 ) { uint64_t tmp ; tmp = cpu_ldq_code ( env , s -> pc ) ; s -> pc += 8 ; reg = ( b & 7 ) | REX_B ( s ) ; tcg_gen_movi_tl ( cpu_T0 , tmp ) ; gen_op_mov_reg_v ( MO_64 , reg , cpu_T0 ) ; } else # endif { ot = dflag ; val = insn_get ( env , s , ot ) ; reg = ( b & 7 ) | REX_B ( s ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; } break ; case 0x91 ... 0x97 : do_xchg_reg_eax : ot = dflag ; reg = ( b & 7 ) | REX_B ( s ) ; rm = R_EAX ; goto do_xchg_reg ; case 0x86 : case 0x87 : ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) { rm = ( modrm & 7 ) | REX_B ( s ) ; do_xchg_reg : gen_op_mov_v_reg ( ot , cpu_T0 , reg ) ; gen_op_mov_v_reg ( ot , cpu_T1 , rm ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; } else { gen_lea_modrm ( env , s , modrm ) ; gen_op_mov_v_reg ( ot , cpu_T0 , reg ) ; tcg_gen_atomic_xchg_tl ( cpu_T1 , cpu_A0 , cpu_T0 , s -> mem_index , ot | MO_LE ) ; gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; } break ; case 0xc4 : op = R_ES ; goto do_lxx ; case 0xc5 : op = R_DS ; goto do_lxx ; case 0x1b2 : op = R_SS ; goto do_lxx ; case 0x1b4 : op = R_FS ; goto do_lxx ; case 0x1b5 : op = R_GS ; do_lxx : ot = dflag != MO_16 ? MO_32 : MO_16 ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , ot , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 1 << ot ) ; gen_op_ld_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; gen_movl_seg_T0 ( s , op ) ; gen_op_mov_reg_v ( ot , reg , cpu_T1 ) ; if ( s -> is_jmp ) { gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } break ; case 0xc0 : case 0xc1 : shift = 2 ; grp2 : { ot = mo_b_d ( b , dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; op = ( modrm >> 3 ) & 7 ; if ( mod != 3 ) { if ( shift == 2 ) { s -> rip_offset = 1 ; } gen_lea_modrm ( env , s , modrm ) ; opreg = OR_TMP0 ; } else { opreg = ( modrm & 7 ) | REX_B ( s ) ; } if ( shift == 0 ) { gen_shift ( s , op , ot , opreg , OR_ECX ) ; } else { if ( shift == 2 ) { shift = cpu_ldub_code ( env , s -> pc ++ ) ; } gen_shifti ( s , op , ot , opreg , shift ) ; } } break ; case 0xd0 : case 0xd1 : shift = 1 ; goto grp2 ; case 0xd2 : case 0xd3 : shift = 0 ; goto grp2 ; case 0x1a4 : op = 0 ; shift = 1 ; goto do_shiftd ; case 0x1a5 : op = 0 ; shift = 0 ; goto do_shiftd ; case 0x1ac : op = 1 ; shift = 1 ; goto do_shiftd ; case 0x1ad : op = 1 ; shift = 0 ; do_shiftd : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; opreg = OR_TMP0 ; } else { opreg = rm ; } gen_op_mov_v_reg ( ot , cpu_T1 , reg ) ; if ( shift ) { TCGv imm = tcg_const_tl ( cpu_ldub_code ( env , s -> pc ++ ) ) ; gen_shiftd_rm_T1 ( s , ot , opreg , op , imm ) ; tcg_temp_free ( imm ) ; } else { gen_shiftd_rm_T1 ( s , ot , opreg , op , cpu_regs [ R_ECX ] ) ; } break ; case 0xd8 ... 0xdf : if ( s -> flags & ( HF_EM_MASK | HF_TS_MASK ) ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; rm = modrm & 7 ; op = ( ( b & 7 ) << 3 ) | ( ( modrm >> 3 ) & 7 ) ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; switch ( op ) { case 0x00 ... 0x07 : case 0x10 ... 0x17 : case 0x20 ... 0x27 : case 0x30 ... 0x37 : { int op1 ; op1 = op & 7 ; switch ( op >> 4 ) { case 0 : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_flds_FT0 ( cpu_env , cpu_tmp2_i32 ) ; break ; case 1 : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_fildl_FT0 ( cpu_env , cpu_tmp2_i32 ) ; break ; case 2 : tcg_gen_qemu_ld_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; gen_helper_fldl_FT0 ( cpu_env , cpu_tmp1_i64 ) ; break ; case 3 : default : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LESW ) ; gen_helper_fildl_FT0 ( cpu_env , cpu_tmp2_i32 ) ; break ; } gen_helper_fp_arith_ST0_FT0 ( op1 ) ; if ( op1 == 3 ) { gen_helper_fpop ( cpu_env ) ; } } break ; case 0x08 : case 0x0a : case 0x0b : case 0x18 ... 0x1b : case 0x28 ... 0x2b : case 0x38 ... 0x3b : switch ( op & 7 ) { case 0 : switch ( op >> 4 ) { case 0 : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_flds_ST0 ( cpu_env , cpu_tmp2_i32 ) ; break ; case 1 : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_fildl_ST0 ( cpu_env , cpu_tmp2_i32 ) ; break ; case 2 : tcg_gen_qemu_ld_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; gen_helper_fldl_ST0 ( cpu_env , cpu_tmp1_i64 ) ; break ; case 3 : default : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LESW ) ; gen_helper_fildl_ST0 ( cpu_env , cpu_tmp2_i32 ) ; break ; } break ; case 1 : switch ( op >> 4 ) { case 1 : gen_helper_fisttl_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; break ; case 2 : gen_helper_fisttll_ST0 ( cpu_tmp1_i64 , cpu_env ) ; tcg_gen_qemu_st_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; break ; case 3 : default : gen_helper_fistt_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; break ; } gen_helper_fpop ( cpu_env ) ; break ; default : switch ( op >> 4 ) { case 0 : gen_helper_fsts_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; break ; case 1 : gen_helper_fistl_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; break ; case 2 : gen_helper_fstl_ST0 ( cpu_tmp1_i64 , cpu_env ) ; tcg_gen_qemu_st_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; break ; case 3 : default : gen_helper_fist_ST0 ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; break ; } if ( ( op & 7 ) == 3 ) gen_helper_fpop ( cpu_env ) ; break ; } break ; case 0x0c : gen_helper_fldenv ( cpu_env , cpu_A0 , tcg_const_i32 ( dflag - 1 ) ) ; break ; case 0x0d : tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; gen_helper_fldcw ( cpu_env , cpu_tmp2_i32 ) ; break ; case 0x0e : gen_helper_fstenv ( cpu_env , cpu_A0 , tcg_const_i32 ( dflag - 1 ) ) ; break ; case 0x0f : gen_helper_fnstcw ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; break ; case 0x1d : gen_helper_fldt_ST0 ( cpu_env , cpu_A0 ) ; break ; case 0x1f : gen_helper_fstt_ST0 ( cpu_env , cpu_A0 ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x2c : gen_helper_frstor ( cpu_env , cpu_A0 , tcg_const_i32 ( dflag - 1 ) ) ; break ; case 0x2e : gen_helper_fsave ( cpu_env , cpu_A0 , tcg_const_i32 ( dflag - 1 ) ) ; break ; case 0x2f : gen_helper_fnstsw ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_qemu_st_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUW ) ; break ; case 0x3c : gen_helper_fbld_ST0 ( cpu_env , cpu_A0 ) ; break ; case 0x3e : gen_helper_fbst_ST0 ( cpu_env , cpu_A0 ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x3d : tcg_gen_qemu_ld_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; gen_helper_fildll_ST0 ( cpu_env , cpu_tmp1_i64 ) ; break ; case 0x3f : gen_helper_fistll_ST0 ( cpu_tmp1_i64 , cpu_env ) ; tcg_gen_qemu_st_i64 ( cpu_tmp1_i64 , cpu_A0 , s -> mem_index , MO_LEQ ) ; gen_helper_fpop ( cpu_env ) ; break ; default : goto unknown_op ; } } else { opreg = rm ; switch ( op ) { case 0x08 : gen_helper_fpush ( cpu_env ) ; gen_helper_fmov_ST0_STN ( cpu_env , tcg_const_i32 ( ( opreg + 1 ) & 7 ) ) ; break ; case 0x09 : case 0x29 : case 0x39 : gen_helper_fxchg_ST0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; break ; case 0x0a : switch ( rm ) { case 0 : gen_helper_fwait ( cpu_env ) ; break ; default : goto unknown_op ; } break ; case 0x0c : switch ( rm ) { case 0 : gen_helper_fchs_ST0 ( cpu_env ) ; break ; case 1 : gen_helper_fabs_ST0 ( cpu_env ) ; break ; case 4 : gen_helper_fldz_FT0 ( cpu_env ) ; gen_helper_fcom_ST0_FT0 ( cpu_env ) ; break ; case 5 : gen_helper_fxam_ST0 ( cpu_env ) ; break ; default : goto unknown_op ; } break ; case 0x0d : { switch ( rm ) { case 0 : gen_helper_fpush ( cpu_env ) ; gen_helper_fld1_ST0 ( cpu_env ) ; break ; case 1 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldl2t_ST0 ( cpu_env ) ; break ; case 2 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldl2e_ST0 ( cpu_env ) ; break ; case 3 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldpi_ST0 ( cpu_env ) ; break ; case 4 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldlg2_ST0 ( cpu_env ) ; break ; case 5 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldln2_ST0 ( cpu_env ) ; break ; case 6 : gen_helper_fpush ( cpu_env ) ; gen_helper_fldz_ST0 ( cpu_env ) ; break ; default : goto unknown_op ; } } break ; case 0x0e : switch ( rm ) { case 0 : gen_helper_f2xm1 ( cpu_env ) ; break ; case 1 : gen_helper_fyl2x ( cpu_env ) ; break ; case 2 : gen_helper_fptan ( cpu_env ) ; break ; case 3 : gen_helper_fpatan ( cpu_env ) ; break ; case 4 : gen_helper_fxtract ( cpu_env ) ; break ; case 5 : gen_helper_fprem1 ( cpu_env ) ; break ; case 6 : gen_helper_fdecstp ( cpu_env ) ; break ; default : case 7 : gen_helper_fincstp ( cpu_env ) ; break ; } break ; case 0x0f : switch ( rm ) { case 0 : gen_helper_fprem ( cpu_env ) ; break ; case 1 : gen_helper_fyl2xp1 ( cpu_env ) ; break ; case 2 : gen_helper_fsqrt ( cpu_env ) ; break ; case 3 : gen_helper_fsincos ( cpu_env ) ; break ; case 5 : gen_helper_fscale ( cpu_env ) ; break ; case 4 : gen_helper_frndint ( cpu_env ) ; break ; case 6 : gen_helper_fsin ( cpu_env ) ; break ; default : case 7 : gen_helper_fcos ( cpu_env ) ; break ; } break ; case 0x00 : case 0x01 : case 0x04 ... 0x07 : case 0x20 : case 0x21 : case 0x24 ... 0x27 : case 0x30 : case 0x31 : case 0x34 ... 0x37 : { int op1 ; op1 = op & 7 ; if ( op >= 0x20 ) { gen_helper_fp_arith_STN_ST0 ( op1 , opreg ) ; if ( op >= 0x30 ) gen_helper_fpop ( cpu_env ) ; } else { gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fp_arith_ST0_FT0 ( op1 ) ; } } break ; case 0x02 : case 0x22 : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fcom_ST0_FT0 ( cpu_env ) ; break ; case 0x03 : case 0x23 : case 0x32 : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fcom_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x15 : switch ( rm ) { case 1 : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( 1 ) ) ; gen_helper_fucom_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; break ; default : goto unknown_op ; } break ; case 0x1c : switch ( rm ) { case 0 : break ; case 1 : break ; case 2 : gen_helper_fclex ( cpu_env ) ; break ; case 3 : gen_helper_fninit ( cpu_env ) ; break ; case 4 : break ; default : goto unknown_op ; } break ; case 0x1d : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fucomi_ST0_FT0 ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x1e : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fcomi_ST0_FT0 ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x28 : gen_helper_ffree_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; break ; case 0x2a : gen_helper_fmov_STN_ST0 ( cpu_env , tcg_const_i32 ( opreg ) ) ; break ; case 0x2b : case 0x0b : case 0x3a : case 0x3b : gen_helper_fmov_STN_ST0 ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x2c : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fucom_ST0_FT0 ( cpu_env ) ; break ; case 0x2d : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fucom_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x33 : switch ( rm ) { case 1 : gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( 1 ) ) ; gen_helper_fcom_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; break ; default : goto unknown_op ; } break ; case 0x38 : gen_helper_ffree_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fpop ( cpu_env ) ; break ; case 0x3c : switch ( rm ) { case 0 : gen_helper_fnstsw ( cpu_tmp2_i32 , cpu_env ) ; tcg_gen_extu_i32_tl ( cpu_T0 , cpu_tmp2_i32 ) ; gen_op_mov_reg_v ( MO_16 , R_EAX , cpu_T0 ) ; break ; default : goto unknown_op ; } break ; case 0x3d : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fucomi_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x3e : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_helper_fmov_FT0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_helper_fcomi_ST0_FT0 ( cpu_env ) ; gen_helper_fpop ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x10 ... 0x13 : case 0x18 ... 0x1b : { int op1 ; TCGLabel * l1 ; static const uint8_t fcmov_cc [ 8 ] = { ( JCC_B << 1 ) , ( JCC_Z << 1 ) , ( JCC_BE << 1 ) , ( JCC_P << 1 ) , } ; if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } op1 = fcmov_cc [ op & 3 ] | ( ( ( op >> 3 ) & 1 ) ^ 1 ) ; l1 = gen_new_label ( ) ; gen_jcc1_noeob ( s , op1 , l1 ) ; gen_helper_fmov_ST0_STN ( cpu_env , tcg_const_i32 ( opreg ) ) ; gen_set_label ( l1 ) ; } break ; default : goto unknown_op ; } } break ; case 0xa4 : case 0xa5 : ot = mo_b_d ( b , dflag ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_movs ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_movs ( s , ot ) ; } break ; case 0xaa : case 0xab : ot = mo_b_d ( b , dflag ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_stos ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_stos ( s , ot ) ; } break ; case 0xac : case 0xad : ot = mo_b_d ( b , dflag ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_lods ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_lods ( s , ot ) ; } break ; case 0xae : case 0xaf : ot = mo_b_d ( b , dflag ) ; if ( prefixes & PREFIX_REPNZ ) { gen_repz_scas ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base , 1 ) ; } else if ( prefixes & PREFIX_REPZ ) { gen_repz_scas ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base , 0 ) ; } else { gen_scas ( s , ot ) ; } break ; case 0xa6 : case 0xa7 : ot = mo_b_d ( b , dflag ) ; if ( prefixes & PREFIX_REPNZ ) { gen_repz_cmps ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base , 1 ) ; } else if ( prefixes & PREFIX_REPZ ) { gen_repz_cmps ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base , 0 ) ; } else { gen_cmps ( s , ot ) ; } break ; case 0x6c : case 0x6d : ot = mo_b_d32 ( b , dflag ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_regs [ R_EDX ] ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , SVM_IOIO_TYPE_MASK | svm_is_rep ( prefixes ) | 4 ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_ins ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_ins ( s , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_jmp ( s , s -> pc - s -> cs_base ) ; } } break ; case 0x6e : case 0x6f : ot = mo_b_d32 ( b , dflag ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_regs [ R_EDX ] ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , svm_is_rep ( prefixes ) | 4 ) ; if ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) { gen_repz_outs ( s , ot , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } else { gen_outs ( s , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_jmp ( s , s -> pc - s -> cs_base ) ; } } break ; case 0xe4 : case 0xe5 : ot = mo_b_d32 ( b , dflag ) ; val = cpu_ldub_code ( env , s -> pc ++ ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , SVM_IOIO_TYPE_MASK | svm_is_rep ( prefixes ) ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } tcg_gen_movi_i32 ( cpu_tmp2_i32 , val ) ; gen_helper_in_func ( ot , cpu_T1 , cpu_tmp2_i32 ) ; gen_op_mov_reg_v ( ot , R_EAX , cpu_T1 ) ; gen_bpt_io ( s , cpu_tmp2_i32 , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0xe6 : case 0xe7 : ot = mo_b_d32 ( b , dflag ) ; val = cpu_ldub_code ( env , s -> pc ++ ) ; tcg_gen_movi_tl ( cpu_T0 , val ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , svm_is_rep ( prefixes ) ) ; gen_op_mov_v_reg ( ot , cpu_T1 , R_EAX ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } tcg_gen_movi_i32 ( cpu_tmp2_i32 , val ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_T1 ) ; gen_helper_out_func ( ot , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; gen_bpt_io ( s , cpu_tmp2_i32 , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0xec : case 0xed : ot = mo_b_d32 ( b , dflag ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_regs [ R_EDX ] ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , SVM_IOIO_TYPE_MASK | svm_is_rep ( prefixes ) ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_in_func ( ot , cpu_T1 , cpu_tmp2_i32 ) ; gen_op_mov_reg_v ( ot , R_EAX , cpu_T1 ) ; gen_bpt_io ( s , cpu_tmp2_i32 , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0xee : case 0xef : ot = mo_b_d32 ( b , dflag ) ; tcg_gen_ext16u_tl ( cpu_T0 , cpu_regs [ R_EDX ] ) ; gen_check_io ( s , ot , pc_start - s -> cs_base , svm_is_rep ( prefixes ) ) ; gen_op_mov_v_reg ( ot , cpu_T1 , R_EAX ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp3_i32 , cpu_T1 ) ; gen_helper_out_func ( ot , cpu_tmp2_i32 , cpu_tmp3_i32 ) ; gen_bpt_io ( s , cpu_tmp2_i32 , ot ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0xc2 : val = cpu_ldsw_code ( env , s -> pc ) ; s -> pc += 2 ; ot = gen_pop_T0 ( s ) ; gen_stack_update ( s , val + ( 1 << ot ) ) ; gen_op_jmp_v ( cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_eob ( s ) ; break ; case 0xc3 : ot = gen_pop_T0 ( s ) ; gen_pop_update ( s , ot ) ; gen_op_jmp_v ( cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_eob ( s ) ; break ; case 0xca : val = cpu_ldsw_code ( env , s -> pc ) ; s -> pc += 2 ; do_lret : if ( s -> pe && ! s -> vm86 ) { gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_lret_protected ( cpu_env , tcg_const_i32 ( dflag - 1 ) , tcg_const_i32 ( val ) ) ; } else { gen_stack_A0 ( s ) ; gen_op_ld_v ( s , dflag , cpu_T0 , cpu_A0 ) ; gen_op_jmp_v ( cpu_T0 ) ; gen_add_A0_im ( s , 1 << dflag ) ; gen_op_ld_v ( s , dflag , cpu_T0 , cpu_A0 ) ; gen_op_movl_seg_T0_vm ( R_CS ) ; gen_stack_update ( s , val + ( 2 << dflag ) ) ; } gen_eob ( s ) ; break ; case 0xcb : val = 0 ; goto do_lret ; case 0xcf : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_IRET ) ; if ( ! s -> pe ) { gen_helper_iret_real ( cpu_env , tcg_const_i32 ( dflag - 1 ) ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; } else if ( s -> vm86 ) { if ( s -> iopl != 3 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_helper_iret_real ( cpu_env , tcg_const_i32 ( dflag - 1 ) ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; } } else { gen_helper_iret_protected ( cpu_env , tcg_const_i32 ( dflag - 1 ) , tcg_const_i32 ( s -> pc - s -> cs_base ) ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; } gen_eob ( s ) ; break ; case 0xe8 : { if ( dflag != MO_16 ) { tval = ( int32_t ) insn_get ( env , s , MO_32 ) ; } else { tval = ( int16_t ) insn_get ( env , s , MO_16 ) ; } next_eip = s -> pc - s -> cs_base ; tval += next_eip ; if ( dflag == MO_16 ) { tval &= 0xffff ; } else if ( ! CODE64 ( s ) ) { tval &= 0xffffffff ; } tcg_gen_movi_tl ( cpu_T0 , next_eip ) ; gen_push_v ( s , cpu_T0 ) ; gen_bnd_jmp ( s ) ; gen_jmp ( s , tval ) ; } break ; case 0x9a : { unsigned int selector , offset ; if ( CODE64 ( s ) ) goto illegal_op ; ot = dflag ; offset = insn_get ( env , s , ot ) ; selector = insn_get ( env , s , MO_16 ) ; tcg_gen_movi_tl ( cpu_T0 , selector ) ; tcg_gen_movi_tl ( cpu_T1 , offset ) ; } goto do_lcall ; case 0xe9 : if ( dflag != MO_16 ) { tval = ( int32_t ) insn_get ( env , s , MO_32 ) ; } else { tval = ( int16_t ) insn_get ( env , s , MO_16 ) ; } tval += s -> pc - s -> cs_base ; if ( dflag == MO_16 ) { tval &= 0xffff ; } else if ( ! CODE64 ( s ) ) { tval &= 0xffffffff ; } gen_bnd_jmp ( s ) ; gen_jmp ( s , tval ) ; break ; case 0xea : { unsigned int selector , offset ; if ( CODE64 ( s ) ) goto illegal_op ; ot = dflag ; offset = insn_get ( env , s , ot ) ; selector = insn_get ( env , s , MO_16 ) ; tcg_gen_movi_tl ( cpu_T0 , selector ) ; tcg_gen_movi_tl ( cpu_T1 , offset ) ; } goto do_ljmp ; case 0xeb : tval = ( int8_t ) insn_get ( env , s , MO_8 ) ; tval += s -> pc - s -> cs_base ; if ( dflag == MO_16 ) { tval &= 0xffff ; } gen_jmp ( s , tval ) ; break ; case 0x70 ... 0x7f : tval = ( int8_t ) insn_get ( env , s , MO_8 ) ; goto do_jcc ; case 0x180 ... 0x18f : if ( dflag != MO_16 ) { tval = ( int32_t ) insn_get ( env , s , MO_32 ) ; } else { tval = ( int16_t ) insn_get ( env , s , MO_16 ) ; } do_jcc : next_eip = s -> pc - s -> cs_base ; tval += next_eip ; if ( dflag == MO_16 ) { tval &= 0xffff ; } gen_bnd_jmp ( s ) ; gen_jcc ( s , b , tval , next_eip ) ; break ; case 0x190 ... 0x19f : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; gen_setcc1 ( s , b , cpu_T0 ) ; gen_ldst_modrm ( env , s , modrm , MO_8 , OR_TMP0 , 1 ) ; break ; case 0x140 ... 0x14f : if ( ! ( s -> cpuid_features & CPUID_CMOV ) ) { goto illegal_op ; } ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_cmovcc1 ( env , s , ot , b , modrm , reg ) ; break ; case 0x9c : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_PUSHF ) ; if ( s -> vm86 && s -> iopl != 3 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_update_cc_op ( s ) ; gen_helper_read_eflags ( cpu_T0 , cpu_env ) ; gen_push_v ( s , cpu_T0 ) ; } break ; case 0x9d : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_POPF ) ; if ( s -> vm86 && s -> iopl != 3 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { ot = gen_pop_T0 ( s ) ; if ( s -> cpl == 0 ) { if ( dflag != MO_16 ) { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK ) ) ) ; } else { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK | IOPL_MASK ) & 0xffff ) ) ; } } else { if ( s -> cpl <= s -> iopl ) { if ( dflag != MO_16 ) { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK ) ) ) ; } else { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK | IF_MASK ) & 0xffff ) ) ; } } else { if ( dflag != MO_16 ) { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK ) ) ) ; } else { gen_helper_write_eflags ( cpu_env , cpu_T0 , tcg_const_i32 ( ( TF_MASK | AC_MASK | ID_MASK | NT_MASK ) & 0xffff ) ) ; } } } gen_pop_update ( s , ot ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } break ; case 0x9e : if ( CODE64 ( s ) && ! ( s -> cpuid_ext3_features & CPUID_EXT3_LAHF_LM ) ) goto illegal_op ; gen_op_mov_v_reg ( MO_8 , cpu_T0 , R_AH ) ; gen_compute_eflags ( s ) ; tcg_gen_andi_tl ( cpu_cc_src , cpu_cc_src , CC_O ) ; tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , CC_S | CC_Z | CC_A | CC_P | CC_C ) ; tcg_gen_or_tl ( cpu_cc_src , cpu_cc_src , cpu_T0 ) ; break ; case 0x9f : if ( CODE64 ( s ) && ! ( s -> cpuid_ext3_features & CPUID_EXT3_LAHF_LM ) ) goto illegal_op ; gen_compute_eflags ( s ) ; tcg_gen_ori_tl ( cpu_T0 , cpu_cc_src , 0x02 ) ; gen_op_mov_reg_v ( MO_8 , R_AH , cpu_T0 ) ; break ; case 0xf5 : gen_compute_eflags ( s ) ; tcg_gen_xori_tl ( cpu_cc_src , cpu_cc_src , CC_C ) ; break ; case 0xf8 : gen_compute_eflags ( s ) ; tcg_gen_andi_tl ( cpu_cc_src , cpu_cc_src , ~ CC_C ) ; break ; case 0xf9 : gen_compute_eflags ( s ) ; tcg_gen_ori_tl ( cpu_cc_src , cpu_cc_src , CC_C ) ; break ; case 0xfc : tcg_gen_movi_i32 ( cpu_tmp2_i32 , 1 ) ; tcg_gen_st_i32 ( cpu_tmp2_i32 , cpu_env , offsetof ( CPUX86State , df ) ) ; break ; case 0xfd : tcg_gen_movi_i32 ( cpu_tmp2_i32 , - 1 ) ; tcg_gen_st_i32 ( cpu_tmp2_i32 , cpu_env , offsetof ( CPUX86State , df ) ) ; break ; case 0x1ba : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; op = ( modrm >> 3 ) & 7 ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod != 3 ) { s -> rip_offset = 1 ; gen_lea_modrm ( env , s , modrm ) ; if ( ! ( s -> prefix & PREFIX_LOCK ) ) { gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; } } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; } val = cpu_ldub_code ( env , s -> pc ++ ) ; tcg_gen_movi_tl ( cpu_T1 , val ) ; if ( op < 4 ) goto unknown_op ; op -= 4 ; goto bt_op ; case 0x1a3 : op = 0 ; goto do_btx ; case 0x1ab : op = 1 ; goto do_btx ; case 0x1b3 : op = 2 ; goto do_btx ; case 0x1bb : op = 3 ; do_btx : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; gen_op_mov_v_reg ( MO_32 , cpu_T1 , reg ) ; if ( mod != 3 ) { AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; gen_exts ( ot , cpu_T1 ) ; tcg_gen_sari_tl ( cpu_tmp0 , cpu_T1 , 3 + ot ) ; tcg_gen_shli_tl ( cpu_tmp0 , cpu_tmp0 , ot ) ; tcg_gen_add_tl ( cpu_A0 , gen_lea_modrm_1 ( a ) , cpu_tmp0 ) ; gen_lea_v_seg ( s , s -> aflag , cpu_A0 , a . def_seg , s -> override ) ; if ( ! ( s -> prefix & PREFIX_LOCK ) ) { gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; } } else { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; } bt_op : tcg_gen_andi_tl ( cpu_T1 , cpu_T1 , ( 1 << ( 3 + ot ) ) - 1 ) ; tcg_gen_movi_tl ( cpu_tmp0 , 1 ) ; tcg_gen_shl_tl ( cpu_tmp0 , cpu_tmp0 , cpu_T1 ) ; if ( s -> prefix & PREFIX_LOCK ) { switch ( op ) { case 0 : gen_op_ld_v ( s , ot , cpu_T0 , cpu_A0 ) ; break ; case 1 : tcg_gen_atomic_fetch_or_tl ( cpu_T0 , cpu_A0 , cpu_tmp0 , s -> mem_index , ot | MO_LE ) ; break ; case 2 : tcg_gen_not_tl ( cpu_tmp0 , cpu_tmp0 ) ; tcg_gen_atomic_fetch_and_tl ( cpu_T0 , cpu_A0 , cpu_tmp0 , s -> mem_index , ot | MO_LE ) ; break ; default : case 3 : tcg_gen_atomic_fetch_xor_tl ( cpu_T0 , cpu_A0 , cpu_tmp0 , s -> mem_index , ot | MO_LE ) ; break ; } tcg_gen_shr_tl ( cpu_tmp4 , cpu_T0 , cpu_T1 ) ; } else { tcg_gen_shr_tl ( cpu_tmp4 , cpu_T0 , cpu_T1 ) ; switch ( op ) { case 0 : break ; case 1 : tcg_gen_or_tl ( cpu_T0 , cpu_T0 , cpu_tmp0 ) ; break ; case 2 : tcg_gen_andc_tl ( cpu_T0 , cpu_T0 , cpu_tmp0 ) ; break ; default : case 3 : tcg_gen_xor_tl ( cpu_T0 , cpu_T0 , cpu_tmp0 ) ; break ; } if ( op != 0 ) { if ( mod != 3 ) { gen_op_st_v ( s , ot , cpu_T0 , cpu_A0 ) ; } else { gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } } } switch ( s -> cc_op ) { case CC_OP_MULB ... CC_OP_MULQ : case CC_OP_ADDB ... CC_OP_ADDQ : case CC_OP_ADCB ... CC_OP_ADCQ : case CC_OP_SUBB ... CC_OP_SUBQ : case CC_OP_SBBB ... CC_OP_SBBQ : case CC_OP_LOGICB ... CC_OP_LOGICQ : case CC_OP_INCB ... CC_OP_INCQ : case CC_OP_DECB ... CC_OP_DECQ : case CC_OP_SHLB ... CC_OP_SHLQ : case CC_OP_SARB ... CC_OP_SARQ : case CC_OP_BMILGB ... CC_OP_BMILGQ : tcg_gen_mov_tl ( cpu_cc_src , cpu_tmp4 ) ; set_cc_op ( s , ( ( s -> cc_op - CC_OP_MULB ) & 3 ) + CC_OP_SARB ) ; break ; default : gen_compute_eflags ( s ) ; tcg_gen_deposit_tl ( cpu_cc_src , cpu_cc_src , cpu_tmp4 , ctz32 ( CC_C ) , 1 ) ; break ; } break ; case 0x1bc : case 0x1bd : ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; gen_extu ( ot , cpu_T0 ) ; if ( ( prefixes & PREFIX_REPZ ) && ( b & 1 ? s -> cpuid_ext3_features & CPUID_EXT3_ABM : s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI1 ) ) { int size = 8 << ot ; tcg_gen_mov_tl ( cpu_cc_src , cpu_T0 ) ; if ( b & 1 ) { tcg_gen_clzi_tl ( cpu_T0 , cpu_T0 , TARGET_LONG_BITS ) ; tcg_gen_subi_tl ( cpu_T0 , cpu_T0 , TARGET_LONG_BITS - size ) ; } else { tcg_gen_ctzi_tl ( cpu_T0 , cpu_T0 , size ) ; } gen_op_update1_cc ( ) ; set_cc_op ( s , CC_OP_BMILGB + ot ) ; } else { tcg_gen_mov_tl ( cpu_cc_dst , cpu_T0 ) ; set_cc_op ( s , CC_OP_LOGICB + ot ) ; if ( b & 1 ) { tcg_gen_xori_tl ( cpu_T1 , cpu_regs [ reg ] , TARGET_LONG_BITS - 1 ) ; tcg_gen_clz_tl ( cpu_T0 , cpu_T0 , cpu_T1 ) ; tcg_gen_xori_tl ( cpu_T0 , cpu_T0 , TARGET_LONG_BITS - 1 ) ; } else { tcg_gen_ctz_tl ( cpu_T0 , cpu_T0 , cpu_regs [ reg ] ) ; } } gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; break ; case 0x27 : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_helper_daa ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x2f : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_helper_das ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x37 : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_helper_aaa ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0x3f : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_helper_aas ( cpu_env ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; break ; case 0xd4 : if ( CODE64 ( s ) ) goto illegal_op ; val = cpu_ldub_code ( env , s -> pc ++ ) ; if ( val == 0 ) { gen_exception ( s , EXCP00_DIVZ , pc_start - s -> cs_base ) ; } else { gen_helper_aam ( cpu_env , tcg_const_i32 ( val ) ) ; set_cc_op ( s , CC_OP_LOGICB ) ; } break ; case 0xd5 : if ( CODE64 ( s ) ) goto illegal_op ; val = cpu_ldub_code ( env , s -> pc ++ ) ; gen_helper_aad ( cpu_env , tcg_const_i32 ( val ) ) ; set_cc_op ( s , CC_OP_LOGICB ) ; break ; case 0x90 : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } if ( REX_B ( s ) ) { goto do_xchg_reg_eax ; } if ( prefixes & PREFIX_REPZ ) { gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_pause ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; s -> is_jmp = DISAS_TB_JUMP ; } break ; case 0x9b : if ( ( s -> flags & ( HF_MP_MASK | HF_TS_MASK ) ) == ( HF_MP_MASK | HF_TS_MASK ) ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; } else { gen_helper_fwait ( cpu_env ) ; } break ; case 0xcc : gen_interrupt ( s , EXCP03_INT3 , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; break ; case 0xcd : val = cpu_ldub_code ( env , s -> pc ++ ) ; if ( s -> vm86 && s -> iopl != 3 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_interrupt ( s , val , pc_start - s -> cs_base , s -> pc - s -> cs_base ) ; } break ; case 0xce : if ( CODE64 ( s ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_into ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; break ; # ifdef WANT_ICEBP case 0xf1 : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_ICEBP ) ; # if 1 gen_debug ( s , pc_start - s -> cs_base ) ; # else tb_flush ( CPU ( x86_env_get_cpu ( env ) ) ) ; qemu_set_log ( CPU_LOG_INT | CPU_LOG_TB_IN_ASM ) ; # endif break ; # endif case 0xfa : if ( ! s -> vm86 ) { if ( s -> cpl <= s -> iopl ) { gen_helper_cli ( cpu_env ) ; } else { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } } else { if ( s -> iopl == 3 ) { gen_helper_cli ( cpu_env ) ; } else { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } } break ; case 0xfb : if ( s -> vm86 ? s -> iopl == 3 : s -> cpl <= s -> iopl ) { gen_helper_sti ( cpu_env ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob_inhibit_irq ( s , true ) ; } else { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } break ; case 0x62 : if ( CODE64 ( s ) ) goto illegal_op ; ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( modrm >> 3 ) & 7 ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; gen_op_mov_v_reg ( ot , cpu_T0 , reg ) ; gen_lea_modrm ( env , s , modrm ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; if ( ot == MO_16 ) { gen_helper_boundw ( cpu_env , cpu_A0 , cpu_tmp2_i32 ) ; } else { gen_helper_boundl ( cpu_env , cpu_A0 , cpu_tmp2_i32 ) ; } break ; case 0x1c8 ... 0x1cf : reg = ( b & 7 ) | REX_B ( s ) ; # ifdef TARGET_X86_64 if ( dflag == MO_64 ) { gen_op_mov_v_reg ( MO_64 , cpu_T0 , reg ) ; tcg_gen_bswap64_i64 ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_64 , reg , cpu_T0 ) ; } else # endif { gen_op_mov_v_reg ( MO_32 , cpu_T0 , reg ) ; tcg_gen_ext32u_tl ( cpu_T0 , cpu_T0 ) ; tcg_gen_bswap32_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_32 , reg , cpu_T0 ) ; } break ; case 0xd6 : if ( CODE64 ( s ) ) goto illegal_op ; gen_compute_eflags_c ( s , cpu_T0 ) ; tcg_gen_neg_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( MO_8 , R_EAX , cpu_T0 ) ; break ; case 0xe0 : case 0xe1 : case 0xe2 : case 0xe3 : { TCGLabel * l1 , * l2 , * l3 ; tval = ( int8_t ) insn_get ( env , s , MO_8 ) ; next_eip = s -> pc - s -> cs_base ; tval += next_eip ; if ( dflag == MO_16 ) { tval &= 0xffff ; } l1 = gen_new_label ( ) ; l2 = gen_new_label ( ) ; l3 = gen_new_label ( ) ; b &= 3 ; switch ( b ) { case 0 : case 1 : gen_op_add_reg_im ( s -> aflag , R_ECX , - 1 ) ; gen_op_jz_ecx ( s -> aflag , l3 ) ; gen_jcc1 ( s , ( JCC_Z << 1 ) | ( b ^ 1 ) , l1 ) ; break ; case 2 : gen_op_add_reg_im ( s -> aflag , R_ECX , - 1 ) ; gen_op_jnz_ecx ( s -> aflag , l1 ) ; break ; default : case 3 : gen_op_jz_ecx ( s -> aflag , l1 ) ; break ; } gen_set_label ( l3 ) ; gen_jmp_im ( next_eip ) ; tcg_gen_br ( l2 ) ; gen_set_label ( l1 ) ; gen_jmp_im ( tval ) ; gen_set_label ( l2 ) ; gen_eob ( s ) ; } break ; case 0x130 : case 0x132 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; if ( b & 2 ) { gen_helper_rdmsr ( cpu_env ) ; } else { gen_helper_wrmsr ( cpu_env ) ; } } break ; case 0x131 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } gen_helper_rdtsc ( cpu_env ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; case 0x133 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_rdpmc ( cpu_env ) ; break ; case 0x134 : if ( CODE64 ( s ) && env -> cpuid_vendor1 != CPUID_VENDOR_INTEL_1 ) goto illegal_op ; if ( ! s -> pe ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_helper_sysenter ( cpu_env ) ; gen_eob ( s ) ; } break ; case 0x135 : if ( CODE64 ( s ) && env -> cpuid_vendor1 != CPUID_VENDOR_INTEL_1 ) goto illegal_op ; if ( ! s -> pe ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_helper_sysexit ( cpu_env , tcg_const_i32 ( dflag - 1 ) ) ; gen_eob ( s ) ; } break ; # ifdef TARGET_X86_64 case 0x105 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_syscall ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; gen_eob_worker ( s , false , true ) ; break ; case 0x107 : if ( ! s -> pe ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_helper_sysret ( cpu_env , tcg_const_i32 ( dflag - 1 ) ) ; if ( s -> lma ) { set_cc_op ( s , CC_OP_EFLAGS ) ; } gen_eob_worker ( s , false , true ) ; } break ; # endif case 0x1a2 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_cpuid ( cpu_env ) ; break ; case 0xf4 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_hlt ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; s -> is_jmp = DISAS_TB_JUMP ; } break ; case 0x100 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; op = ( modrm >> 3 ) & 7 ; switch ( op ) { case 0 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; gen_svm_check_intercept ( s , pc_start , SVM_EXIT_LDTR_READ ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , ldt . selector ) ) ; ot = mod == 3 ? dflag : MO_16 ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; break ; case 2 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_LDTR_WRITE ) ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_lldt ( cpu_env , cpu_tmp2_i32 ) ; } break ; case 1 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; gen_svm_check_intercept ( s , pc_start , SVM_EXIT_TR_READ ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , tr . selector ) ) ; ot = mod == 3 ? dflag : MO_16 ; gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; break ; case 3 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_TR_WRITE ) ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_T0 ) ; gen_helper_ltr ( cpu_env , cpu_tmp2_i32 ) ; } break ; case 4 : case 5 : if ( ! s -> pe || s -> vm86 ) goto illegal_op ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; gen_update_cc_op ( s ) ; if ( op == 4 ) { gen_helper_verr ( cpu_env , cpu_T0 ) ; } else { gen_helper_verw ( cpu_env , cpu_T0 ) ; } set_cc_op ( s , CC_OP_EFLAGS ) ; break ; default : goto unknown_op ; } break ; case 0x101 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; switch ( modrm ) { CASE_MODRM_MEM_OP ( 0 ) : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_GDTR_READ ) ; gen_lea_modrm ( env , s , modrm ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , gdt . limit ) ) ; gen_op_st_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; gen_add_A0_im ( s , 2 ) ; tcg_gen_ld_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , gdt . base ) ) ; if ( dflag == MO_16 ) { tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , 0xffffff ) ; } gen_op_st_v ( s , CODE64 ( s ) + MO_32 , cpu_T0 , cpu_A0 ) ; break ; case 0xc8 : if ( ! ( s -> cpuid_ext_features & CPUID_EXT_MONITOR ) || s -> cpl != 0 ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; tcg_gen_mov_tl ( cpu_A0 , cpu_regs [ R_EAX ] ) ; gen_extu ( s -> aflag , cpu_A0 ) ; gen_add_A0_ds_seg ( s ) ; gen_helper_monitor ( cpu_env , cpu_A0 ) ; break ; case 0xc9 : if ( ! ( s -> cpuid_ext_features & CPUID_EXT_MONITOR ) || s -> cpl != 0 ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_mwait ( cpu_env , tcg_const_i32 ( s -> pc - pc_start ) ) ; gen_eob ( s ) ; break ; case 0xca : if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_SMAP ) || s -> cpl != 0 ) { goto illegal_op ; } gen_helper_clac ( cpu_env ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; case 0xcb : if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_SMAP ) || s -> cpl != 0 ) { goto illegal_op ; } gen_helper_stac ( cpu_env ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; CASE_MODRM_MEM_OP ( 1 ) : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_IDTR_READ ) ; gen_lea_modrm ( env , s , modrm ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , idt . limit ) ) ; gen_op_st_v ( s , MO_16 , cpu_T0 , cpu_A0 ) ; gen_add_A0_im ( s , 2 ) ; tcg_gen_ld_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , idt . base ) ) ; if ( dflag == MO_16 ) { tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , 0xffffff ) ; } gen_op_st_v ( s , CODE64 ( s ) + MO_32 , cpu_T0 , cpu_A0 ) ; break ; case 0xd0 : if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( s -> prefix & ( PREFIX_LOCK | PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_regs [ R_ECX ] ) ; gen_helper_xgetbv ( cpu_tmp1_i64 , cpu_env , cpu_tmp2_i32 ) ; tcg_gen_extr_i64_tl ( cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] , cpu_tmp1_i64 ) ; break ; case 0xd1 : if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( s -> prefix & ( PREFIX_LOCK | PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_regs [ R_ECX ] ) ; gen_helper_xsetbv ( cpu_env , cpu_tmp2_i32 , cpu_tmp1_i64 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; case 0xd8 : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_vmrun ( cpu_env , tcg_const_i32 ( s -> aflag - 1 ) , tcg_const_i32 ( s -> pc - pc_start ) ) ; tcg_gen_exit_tb ( 0 ) ; s -> is_jmp = DISAS_TB_JUMP ; break ; case 0xd9 : if ( ! ( s -> flags & HF_SVME_MASK ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_vmmcall ( cpu_env ) ; break ; case 0xda : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_vmload ( cpu_env , tcg_const_i32 ( s -> aflag - 1 ) ) ; break ; case 0xdb : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_vmsave ( cpu_env , tcg_const_i32 ( s -> aflag - 1 ) ) ; break ; case 0xdc : if ( ( ! ( s -> flags & HF_SVME_MASK ) && ! ( s -> cpuid_ext3_features & CPUID_EXT3_SKINIT ) ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_stgi ( cpu_env ) ; break ; case 0xdd : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_clgi ( cpu_env ) ; break ; case 0xde : if ( ( ! ( s -> flags & HF_SVME_MASK ) && ! ( s -> cpuid_ext3_features & CPUID_EXT3_SKINIT ) ) || ! s -> pe ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_skinit ( cpu_env ) ; break ; case 0xdf : if ( ! ( s -> flags & HF_SVME_MASK ) || ! s -> pe ) { goto illegal_op ; } if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_helper_invlpga ( cpu_env , tcg_const_i32 ( s -> aflag - 1 ) ) ; break ; CASE_MODRM_MEM_OP ( 2 ) : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_svm_check_intercept ( s , pc_start , SVM_EXIT_GDTR_WRITE ) ; gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , MO_16 , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 2 ) ; gen_op_ld_v ( s , CODE64 ( s ) + MO_32 , cpu_T0 , cpu_A0 ) ; if ( dflag == MO_16 ) { tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , 0xffffff ) ; } tcg_gen_st_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , gdt . base ) ) ; tcg_gen_st32_tl ( cpu_T1 , cpu_env , offsetof ( CPUX86State , gdt . limit ) ) ; break ; CASE_MODRM_MEM_OP ( 3 ) : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_svm_check_intercept ( s , pc_start , SVM_EXIT_IDTR_WRITE ) ; gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , MO_16 , cpu_T1 , cpu_A0 ) ; gen_add_A0_im ( s , 2 ) ; gen_op_ld_v ( s , CODE64 ( s ) + MO_32 , cpu_T0 , cpu_A0 ) ; if ( dflag == MO_16 ) { tcg_gen_andi_tl ( cpu_T0 , cpu_T0 , 0xffffff ) ; } tcg_gen_st_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , idt . base ) ) ; tcg_gen_st32_tl ( cpu_T1 , cpu_env , offsetof ( CPUX86State , idt . limit ) ) ; break ; CASE_MODRM_OP ( 4 ) : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_READ_CR0 ) ; tcg_gen_ld_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , cr [ 0 ] ) ) ; if ( CODE64 ( s ) ) { mod = ( modrm >> 6 ) & 3 ; ot = ( mod != 3 ? MO_16 : s -> dflag ) ; } else { ot = MO_16 ; } gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 1 ) ; break ; case 0xee : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_regs [ R_ECX ] ) ; gen_helper_rdpkru ( cpu_tmp1_i64 , cpu_env , cpu_tmp2_i32 ) ; tcg_gen_extr_i64_tl ( cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] , cpu_tmp1_i64 ) ; break ; case 0xef : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; tcg_gen_trunc_tl_i32 ( cpu_tmp2_i32 , cpu_regs [ R_ECX ] ) ; gen_helper_wrpkru ( cpu_env , cpu_tmp2_i32 , cpu_tmp1_i64 ) ; break ; CASE_MODRM_OP ( 6 ) : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_svm_check_intercept ( s , pc_start , SVM_EXIT_WRITE_CR0 ) ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; gen_helper_lmsw ( cpu_env , cpu_T0 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; CASE_MODRM_MEM_OP ( 7 ) : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; break ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; gen_lea_modrm ( env , s , modrm ) ; gen_helper_invlpg ( cpu_env , cpu_A0 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; case 0xf8 : # ifdef TARGET_X86_64 if ( CODE64 ( s ) ) { if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { tcg_gen_mov_tl ( cpu_T0 , cpu_seg_base [ R_GS ] ) ; tcg_gen_ld_tl ( cpu_seg_base [ R_GS ] , cpu_env , offsetof ( CPUX86State , kernelgsbase ) ) ; tcg_gen_st_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , kernelgsbase ) ) ; } break ; } # endif goto illegal_op ; case 0xf9 : if ( ! ( s -> cpuid_ext2_features & CPUID_EXT2_RDTSCP ) ) { goto illegal_op ; } gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_start ( ) ; } gen_helper_rdtscp ( cpu_env ) ; if ( s -> tb -> cflags & CF_USE_ICOUNT ) { gen_io_end ( ) ; gen_jmp ( s , s -> pc - s -> cs_base ) ; } break ; default : goto unknown_op ; } break ; case 0x108 : case 0x109 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_svm_check_intercept ( s , pc_start , ( b & 2 ) ? SVM_EXIT_INVD : SVM_EXIT_WBINVD ) ; } break ; case 0x63 : # ifdef TARGET_X86_64 if ( CODE64 ( s ) ) { int d_ot ; d_ot = dflag ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; mod = ( modrm >> 6 ) & 3 ; rm = ( modrm & 7 ) | REX_B ( s ) ; if ( mod == 3 ) { gen_op_mov_v_reg ( MO_32 , cpu_T0 , rm ) ; if ( d_ot == MO_64 ) { tcg_gen_ext32s_tl ( cpu_T0 , cpu_T0 ) ; } gen_op_mov_reg_v ( d_ot , reg , cpu_T0 ) ; } else { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , MO_32 | MO_SIGN , cpu_T0 , cpu_A0 ) ; gen_op_mov_reg_v ( d_ot , reg , cpu_T0 ) ; } } else # endif { TCGLabel * label1 ; TCGv t0 , t1 , t2 , a0 ; if ( ! s -> pe || s -> vm86 ) goto illegal_op ; t0 = tcg_temp_local_new ( ) ; t1 = tcg_temp_local_new ( ) ; t2 = tcg_temp_local_new ( ) ; ot = MO_16 ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( modrm >> 3 ) & 7 ; mod = ( modrm >> 6 ) & 3 ; rm = modrm & 7 ; if ( mod != 3 ) { gen_lea_modrm ( env , s , modrm ) ; gen_op_ld_v ( s , ot , t0 , cpu_A0 ) ; a0 = tcg_temp_local_new ( ) ; tcg_gen_mov_tl ( a0 , cpu_A0 ) ; } else { gen_op_mov_v_reg ( ot , t0 , rm ) ; TCGV_UNUSED ( a0 ) ; } gen_op_mov_v_reg ( ot , t1 , reg ) ; tcg_gen_andi_tl ( cpu_tmp0 , t0 , 3 ) ; tcg_gen_andi_tl ( t1 , t1 , 3 ) ; tcg_gen_movi_tl ( t2 , 0 ) ; label1 = gen_new_label ( ) ; tcg_gen_brcond_tl ( TCG_COND_GE , cpu_tmp0 , t1 , label1 ) ; tcg_gen_andi_tl ( t0 , t0 , ~ 3 ) ; tcg_gen_or_tl ( t0 , t0 , t1 ) ; tcg_gen_movi_tl ( t2 , CC_Z ) ; gen_set_label ( label1 ) ; if ( mod != 3 ) { gen_op_st_v ( s , ot , t0 , a0 ) ; tcg_temp_free ( a0 ) ; } else { gen_op_mov_reg_v ( ot , rm , t0 ) ; } gen_compute_eflags ( s ) ; tcg_gen_andi_tl ( cpu_cc_src , cpu_cc_src , ~ CC_Z ) ; tcg_gen_or_tl ( cpu_cc_src , cpu_cc_src , t2 ) ; tcg_temp_free ( t0 ) ; tcg_temp_free ( t1 ) ; tcg_temp_free ( t2 ) ; } break ; case 0x102 : case 0x103 : { TCGLabel * label1 ; TCGv t0 ; if ( ! s -> pe || s -> vm86 ) goto illegal_op ; ot = dflag != MO_16 ? MO_32 : MO_16 ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , MO_16 , OR_TMP0 , 0 ) ; t0 = tcg_temp_local_new ( ) ; gen_update_cc_op ( s ) ; if ( b == 0x102 ) { gen_helper_lar ( t0 , cpu_env , cpu_T0 ) ; } else { gen_helper_lsl ( t0 , cpu_env , cpu_T0 ) ; } tcg_gen_andi_tl ( cpu_tmp0 , cpu_cc_src , CC_Z ) ; label1 = gen_new_label ( ) ; tcg_gen_brcondi_tl ( TCG_COND_EQ , cpu_tmp0 , 0 , label1 ) ; gen_op_mov_reg_v ( ot , reg , t0 ) ; gen_set_label ( label1 ) ; set_cc_op ( s , CC_OP_EFLAGS ) ; tcg_temp_free ( t0 ) ; } break ; case 0x118 : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; op = ( modrm >> 3 ) & 7 ; switch ( op ) { case 0 : case 1 : case 2 : case 3 : if ( mod == 3 ) goto illegal_op ; gen_nop_modrm ( env , s , modrm ) ; break ; default : gen_nop_modrm ( env , s , modrm ) ; break ; } break ; case 0x11a : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; if ( s -> flags & HF_MPX_EN_MASK ) { mod = ( modrm >> 6 ) & 3 ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( prefixes & PREFIX_REPZ ) { if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 ) { goto illegal_op ; } gen_bndck ( env , s , modrm , TCG_COND_LTU , cpu_bndl [ reg ] ) ; } else if ( prefixes & PREFIX_REPNZ ) { if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 ) { goto illegal_op ; } TCGv_i64 notu = tcg_temp_new_i64 ( ) ; tcg_gen_not_i64 ( notu , cpu_bndu [ reg ] ) ; gen_bndck ( env , s , modrm , TCG_COND_GTU , notu ) ; tcg_temp_free_i64 ( notu ) ; } else if ( prefixes & PREFIX_DATA ) { if ( reg >= 4 || s -> aflag == MO_16 ) { goto illegal_op ; } if ( mod == 3 ) { int reg2 = ( modrm & 7 ) | REX_B ( s ) ; if ( reg2 >= 4 || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } if ( s -> flags & HF_MPX_IU_MASK ) { tcg_gen_mov_i64 ( cpu_bndl [ reg ] , cpu_bndl [ reg2 ] ) ; tcg_gen_mov_i64 ( cpu_bndu [ reg ] , cpu_bndu [ reg2 ] ) ; } } else { gen_lea_modrm ( env , s , modrm ) ; if ( CODE64 ( s ) ) { tcg_gen_qemu_ld_i64 ( cpu_bndl [ reg ] , cpu_A0 , s -> mem_index , MO_LEQ ) ; tcg_gen_addi_tl ( cpu_A0 , cpu_A0 , 8 ) ; tcg_gen_qemu_ld_i64 ( cpu_bndu [ reg ] , cpu_A0 , s -> mem_index , MO_LEQ ) ; } else { tcg_gen_qemu_ld_i64 ( cpu_bndl [ reg ] , cpu_A0 , s -> mem_index , MO_LEUL ) ; tcg_gen_addi_tl ( cpu_A0 , cpu_A0 , 4 ) ; tcg_gen_qemu_ld_i64 ( cpu_bndu [ reg ] , cpu_A0 , s -> mem_index , MO_LEUL ) ; } gen_set_hflag ( s , HF_MPX_IU_MASK ) ; } } else if ( mod != 3 ) { AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 || a . base < - 1 ) { goto illegal_op ; } if ( a . base >= 0 ) { tcg_gen_addi_tl ( cpu_A0 , cpu_regs [ a . base ] , a . disp ) ; } else { tcg_gen_movi_tl ( cpu_A0 , 0 ) ; } gen_lea_v_seg ( s , s -> aflag , cpu_A0 , a . def_seg , s -> override ) ; if ( a . index >= 0 ) { tcg_gen_mov_tl ( cpu_T0 , cpu_regs [ a . index ] ) ; } else { tcg_gen_movi_tl ( cpu_T0 , 0 ) ; } if ( CODE64 ( s ) ) { gen_helper_bndldx64 ( cpu_bndl [ reg ] , cpu_env , cpu_A0 , cpu_T0 ) ; tcg_gen_ld_i64 ( cpu_bndu [ reg ] , cpu_env , offsetof ( CPUX86State , mmx_t0 . MMX_Q ( 0 ) ) ) ; } else { gen_helper_bndldx32 ( cpu_bndu [ reg ] , cpu_env , cpu_A0 , cpu_T0 ) ; tcg_gen_ext32u_i64 ( cpu_bndl [ reg ] , cpu_bndu [ reg ] ) ; tcg_gen_shri_i64 ( cpu_bndu [ reg ] , cpu_bndu [ reg ] , 32 ) ; } gen_set_hflag ( s , HF_MPX_IU_MASK ) ; } } gen_nop_modrm ( env , s , modrm ) ; break ; case 0x11b : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; if ( s -> flags & HF_MPX_EN_MASK ) { mod = ( modrm >> 6 ) & 3 ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( mod != 3 && ( prefixes & PREFIX_REPZ ) ) { if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 ) { goto illegal_op ; } AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; if ( a . base >= 0 ) { tcg_gen_extu_tl_i64 ( cpu_bndl [ reg ] , cpu_regs [ a . base ] ) ; if ( ! CODE64 ( s ) ) { tcg_gen_ext32u_i64 ( cpu_bndl [ reg ] , cpu_bndl [ reg ] ) ; } } else if ( a . base == - 1 ) { tcg_gen_movi_i64 ( cpu_bndl [ reg ] , 0 ) ; } else { goto illegal_op ; } tcg_gen_not_tl ( cpu_A0 , gen_lea_modrm_1 ( a ) ) ; if ( ! CODE64 ( s ) ) { tcg_gen_ext32u_tl ( cpu_A0 , cpu_A0 ) ; } tcg_gen_extu_tl_i64 ( cpu_bndu [ reg ] , cpu_A0 ) ; gen_set_hflag ( s , HF_MPX_IU_MASK ) ; break ; } else if ( prefixes & PREFIX_REPNZ ) { if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 ) { goto illegal_op ; } gen_bndck ( env , s , modrm , TCG_COND_GTU , cpu_bndu [ reg ] ) ; } else if ( prefixes & PREFIX_DATA ) { if ( reg >= 4 || s -> aflag == MO_16 ) { goto illegal_op ; } if ( mod == 3 ) { int reg2 = ( modrm & 7 ) | REX_B ( s ) ; if ( reg2 >= 4 || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } if ( s -> flags & HF_MPX_IU_MASK ) { tcg_gen_mov_i64 ( cpu_bndl [ reg2 ] , cpu_bndl [ reg ] ) ; tcg_gen_mov_i64 ( cpu_bndu [ reg2 ] , cpu_bndu [ reg ] ) ; } } else { gen_lea_modrm ( env , s , modrm ) ; if ( CODE64 ( s ) ) { tcg_gen_qemu_st_i64 ( cpu_bndl [ reg ] , cpu_A0 , s -> mem_index , MO_LEQ ) ; tcg_gen_addi_tl ( cpu_A0 , cpu_A0 , 8 ) ; tcg_gen_qemu_st_i64 ( cpu_bndu [ reg ] , cpu_A0 , s -> mem_index , MO_LEQ ) ; } else { tcg_gen_qemu_st_i64 ( cpu_bndl [ reg ] , cpu_A0 , s -> mem_index , MO_LEUL ) ; tcg_gen_addi_tl ( cpu_A0 , cpu_A0 , 4 ) ; tcg_gen_qemu_st_i64 ( cpu_bndu [ reg ] , cpu_A0 , s -> mem_index , MO_LEUL ) ; } } } else if ( mod != 3 ) { AddressParts a = gen_lea_modrm_0 ( env , s , modrm ) ; if ( reg >= 4 || ( prefixes & PREFIX_LOCK ) || s -> aflag == MO_16 || a . base < - 1 ) { goto illegal_op ; } if ( a . base >= 0 ) { tcg_gen_addi_tl ( cpu_A0 , cpu_regs [ a . base ] , a . disp ) ; } else { tcg_gen_movi_tl ( cpu_A0 , 0 ) ; } gen_lea_v_seg ( s , s -> aflag , cpu_A0 , a . def_seg , s -> override ) ; if ( a . index >= 0 ) { tcg_gen_mov_tl ( cpu_T0 , cpu_regs [ a . index ] ) ; } else { tcg_gen_movi_tl ( cpu_T0 , 0 ) ; } if ( CODE64 ( s ) ) { gen_helper_bndstx64 ( cpu_env , cpu_A0 , cpu_T0 , cpu_bndl [ reg ] , cpu_bndu [ reg ] ) ; } else { gen_helper_bndstx32 ( cpu_env , cpu_A0 , cpu_T0 , cpu_bndl [ reg ] , cpu_bndu [ reg ] ) ; } } } gen_nop_modrm ( env , s , modrm ) ; break ; case 0x119 : case 0x11c ... 0x11f : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; gen_nop_modrm ( env , s , modrm ) ; break ; case 0x120 : case 0x122 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { modrm = cpu_ldub_code ( env , s -> pc ++ ) ; rm = ( modrm & 7 ) | REX_B ( s ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( CODE64 ( s ) ) ot = MO_64 ; else ot = MO_32 ; if ( ( prefixes & PREFIX_LOCK ) && ( reg == 0 ) && ( s -> cpuid_ext3_features & CPUID_EXT3_CR8LEG ) ) { reg = 8 ; } switch ( reg ) { case 0 : case 2 : case 3 : case 4 : case 8 : gen_update_cc_op ( s ) ; gen_jmp_im ( pc_start - s -> cs_base ) ; if ( b & 2 ) { gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; gen_helper_write_crN ( cpu_env , tcg_const_i32 ( reg ) , cpu_T0 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } else { gen_helper_read_crN ( cpu_T0 , cpu_env , tcg_const_i32 ( reg ) ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } break ; default : goto unknown_op ; } } break ; case 0x121 : case 0x123 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { modrm = cpu_ldub_code ( env , s -> pc ++ ) ; rm = ( modrm & 7 ) | REX_B ( s ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( CODE64 ( s ) ) ot = MO_64 ; else ot = MO_32 ; if ( reg >= 8 ) { goto illegal_op ; } if ( b & 2 ) { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_WRITE_DR0 + reg ) ; gen_op_mov_v_reg ( ot , cpu_T0 , rm ) ; tcg_gen_movi_i32 ( cpu_tmp2_i32 , reg ) ; gen_helper_set_dr ( cpu_env , cpu_tmp2_i32 , cpu_T0 ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } else { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_READ_DR0 + reg ) ; tcg_gen_movi_i32 ( cpu_tmp2_i32 , reg ) ; gen_helper_get_dr ( cpu_T0 , cpu_env , cpu_tmp2_i32 ) ; gen_op_mov_reg_v ( ot , rm , cpu_T0 ) ; } } break ; case 0x106 : if ( s -> cpl != 0 ) { gen_exception ( s , EXCP0D_GPF , pc_start - s -> cs_base ) ; } else { gen_svm_check_intercept ( s , pc_start , SVM_EXIT_WRITE_CR0 ) ; gen_helper_clts ( cpu_env ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; } break ; case 0x1c3 : if ( ! ( s -> cpuid_features & CPUID_SSE2 ) ) goto illegal_op ; ot = mo_64_32 ( dflag ) ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; gen_ldst_modrm ( env , s , modrm , ot , reg , 1 ) ; break ; case 0x1ae : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; switch ( modrm ) { CASE_MODRM_MEM_OP ( 0 ) : if ( ! ( s -> cpuid_features & CPUID_FXSR ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } if ( ( s -> flags & HF_EM_MASK ) || ( s -> flags & HF_TS_MASK ) ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } gen_lea_modrm ( env , s , modrm ) ; gen_helper_fxsave ( cpu_env , cpu_A0 ) ; break ; CASE_MODRM_MEM_OP ( 1 ) : if ( ! ( s -> cpuid_features & CPUID_FXSR ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } if ( ( s -> flags & HF_EM_MASK ) || ( s -> flags & HF_TS_MASK ) ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } gen_lea_modrm ( env , s , modrm ) ; gen_helper_fxrstor ( cpu_env , cpu_A0 ) ; break ; CASE_MODRM_MEM_OP ( 2 ) : if ( ( s -> flags & HF_EM_MASK ) || ! ( s -> flags & HF_OSFXSR_MASK ) ) { goto illegal_op ; } if ( s -> flags & HF_TS_MASK ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_qemu_ld_i32 ( cpu_tmp2_i32 , cpu_A0 , s -> mem_index , MO_LEUL ) ; gen_helper_ldmxcsr ( cpu_env , cpu_tmp2_i32 ) ; break ; CASE_MODRM_MEM_OP ( 3 ) : if ( ( s -> flags & HF_EM_MASK ) || ! ( s -> flags & HF_OSFXSR_MASK ) ) { goto illegal_op ; } if ( s -> flags & HF_TS_MASK ) { gen_exception ( s , EXCP07_PREX , pc_start - s -> cs_base ) ; break ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_ld32u_tl ( cpu_T0 , cpu_env , offsetof ( CPUX86State , mxcsr ) ) ; gen_op_st_v ( s , MO_32 , cpu_T0 , cpu_A0 ) ; break ; CASE_MODRM_MEM_OP ( 4 ) : if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( prefixes & ( PREFIX_LOCK | PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; gen_helper_xsave ( cpu_env , cpu_A0 , cpu_tmp1_i64 ) ; break ; CASE_MODRM_MEM_OP ( 5 ) : if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( prefixes & ( PREFIX_LOCK | PREFIX_DATA | PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; gen_helper_xrstor ( cpu_env , cpu_A0 , cpu_tmp1_i64 ) ; gen_update_cc_op ( s ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_eob ( s ) ; break ; CASE_MODRM_MEM_OP ( 6 ) : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } if ( prefixes & PREFIX_DATA ) { if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLWB ) ) { goto illegal_op ; } gen_nop_modrm ( env , s , modrm ) ; } else { if ( ( s -> cpuid_ext_features & CPUID_EXT_XSAVE ) == 0 || ( s -> cpuid_xsave_features & CPUID_XSAVE_XSAVEOPT ) == 0 || ( prefixes & ( PREFIX_REPZ | PREFIX_REPNZ ) ) ) { goto illegal_op ; } gen_lea_modrm ( env , s , modrm ) ; tcg_gen_concat_tl_i64 ( cpu_tmp1_i64 , cpu_regs [ R_EAX ] , cpu_regs [ R_EDX ] ) ; gen_helper_xsaveopt ( cpu_env , cpu_A0 , cpu_tmp1_i64 ) ; } break ; CASE_MODRM_MEM_OP ( 7 ) : if ( prefixes & PREFIX_LOCK ) { goto illegal_op ; } if ( prefixes & PREFIX_DATA ) { if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLFLUSHOPT ) ) { goto illegal_op ; } } else { if ( ( s -> prefix & ( PREFIX_REPZ | PREFIX_REPNZ ) ) || ! ( s -> cpuid_features & CPUID_CLFLUSH ) ) { goto illegal_op ; } } gen_nop_modrm ( env , s , modrm ) ; break ; case 0xc0 ... 0xc7 : case 0xc8 ... 0xc8 : case 0xd0 ... 0xd7 : case 0xd8 ... 0xd8 : if ( CODE64 ( s ) && ( prefixes & PREFIX_REPZ ) && ! ( prefixes & PREFIX_LOCK ) && ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_FSGSBASE ) ) { TCGv base , treg , src , dst ; tcg_gen_movi_i32 ( cpu_tmp2_i32 , CR4_FSGSBASE_MASK ) ; gen_helper_cr4_testbit ( cpu_env , cpu_tmp2_i32 ) ; base = cpu_seg_base [ modrm & 8 ? R_GS : R_FS ] ; treg = cpu_regs [ ( modrm & 7 ) | REX_B ( s ) ] ; if ( modrm & 0x10 ) { dst = base , src = treg ; } else { dst = treg , src = base ; } if ( s -> dflag == MO_32 ) { tcg_gen_ext32u_tl ( dst , src ) ; } else { tcg_gen_mov_tl ( dst , src ) ; } break ; } goto unknown_op ; case 0xf8 : if ( prefixes & PREFIX_DATA ) { if ( ! ( s -> cpuid_7_0_ebx_features & CPUID_7_0_EBX_PCOMMIT ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } break ; } case 0xf9 ... 0xff : if ( ! ( s -> cpuid_features & CPUID_SSE ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } tcg_gen_mb ( TCG_MO_ST_ST | TCG_BAR_SC ) ; break ; case 0xe8 ... 0xef : if ( ! ( s -> cpuid_features & CPUID_SSE ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } tcg_gen_mb ( TCG_MO_LD_LD | TCG_BAR_SC ) ; break ; case 0xf0 ... 0xf7 : if ( ! ( s -> cpuid_features & CPUID_SSE2 ) || ( prefixes & PREFIX_LOCK ) ) { goto illegal_op ; } tcg_gen_mb ( TCG_MO_ALL | TCG_BAR_SC ) ; break ; default : goto unknown_op ; } break ; case 0x10d : modrm = cpu_ldub_code ( env , s -> pc ++ ) ; mod = ( modrm >> 6 ) & 3 ; if ( mod == 3 ) goto illegal_op ; gen_nop_modrm ( env , s , modrm ) ; break ; case 0x1aa : gen_svm_check_intercept ( s , pc_start , SVM_EXIT_RSM ) ; if ( ! ( s -> flags & HF_SMM_MASK ) ) goto illegal_op ; gen_update_cc_op ( s ) ; gen_jmp_im ( s -> pc - s -> cs_base ) ; gen_helper_rsm ( cpu_env ) ; gen_eob ( s ) ; break ; case 0x1b8 : if ( ( prefixes & ( PREFIX_REPZ | PREFIX_LOCK | PREFIX_REPNZ ) ) != PREFIX_REPZ ) goto illegal_op ; if ( ! ( s -> cpuid_ext_features & CPUID_EXT_POPCNT ) ) goto illegal_op ; modrm = cpu_ldub_code ( env , s -> pc ++ ) ; reg = ( ( modrm >> 3 ) & 7 ) | rex_r ; if ( s -> prefix & PREFIX_DATA ) { ot = MO_16 ; } else { ot = mo_64_32 ( dflag ) ; } gen_ldst_modrm ( env , s , modrm , ot , OR_TMP0 , 0 ) ; gen_extu ( ot , cpu_T0 ) ; tcg_gen_mov_tl ( cpu_cc_src , cpu_T0 ) ; tcg_gen_ctpop_tl ( cpu_T0 , cpu_T0 ) ; gen_op_mov_reg_v ( ot , reg , cpu_T0 ) ; set_cc_op ( s , CC_OP_POPCNT ) ; break ; case 0x10e ... 0x10f : s -> prefix &= ~ ( PREFIX_REPZ | PREFIX_REPNZ | PREFIX_DATA ) ; case 0x110 ... 0x117 : case 0x128 ... 0x12f : case 0x138 ... 0x13a : case 0x150 ... 0x179 : case 0x17c ... 0x17f : case 0x1c2 : case 0x1c4 ... 0x1c6 : case 0x1d0 ... 0x1fe : gen_sse ( env , s , b , pc_start , rex_r ) ; break ; default : goto unknown_op ; } return s -> pc ; illegal_op : gen_illegal_opcode ( s ) ; return s -> pc ; unknown_op : gen_unknown_opcode ( env , s ) ; return s -> pc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; next_byte : if ( s -> pc - pc_start > 14 ) { goto illegal_op ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9499\n\n```\nCWE-617 static Image * ReadMPCImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char cache_filename [ MagickPathExtent ] , id [ MagickPathExtent ] , keyword [ MagickPathExtent ] , * options ; const unsigned char * p ; GeometryInfo geometry_info ; Image * image ; int c ; LinkedListInfo * profiles ; MagickBooleanType status ; MagickOffsetType offset ; MagickStatusType flags ; register ssize_t i ; size_t depth , length ; ssize_t count ; StringInfo * profile ; unsigned int signature ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( cache_filename , image -> filename , MagickPathExtent ) ; AppendImageFormat ( \"cache\" , cache_filename ) ; c = ReadBlobByte ( image ) ; if ( c == EOF ) { image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } * id = '\\\\0' ; ( void ) ResetMagickMemory ( keyword , 0 , sizeof ( keyword ) ) ; offset = 0 ; do { profiles = ( LinkedListInfo * ) NULL ; length = MagickPathExtent ; options = AcquireString ( ( char * ) NULL ) ; signature = GetMagickSignature ( ( const StringInfo * ) NULL ) ; image -> depth = 8 ; image -> compression = NoCompression ; while ( ( isgraph ( c ) != MagickFalse ) && ( c != ( int ) ':' ) ) { register char * p ; if ( c == ( int ) '{' ) { char * comment ; length = MagickPathExtent ; comment = AcquireString ( ( char * ) NULL ) ; for ( p = comment ; comment != ( char * ) NULL ; p ++ ) { c = ReadBlobByte ( image ) ; if ( c == ( int ) '\\\\\\\\' ) c = ReadBlobByte ( image ) ; else if ( ( c == EOF ) || ( c == ( int ) '}' ) ) break ; if ( ( size_t ) ( p - comment + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; comment = ( char * ) ResizeQuantumMemory ( comment , length + MagickPathExtent , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) break ; p = comment + strlen ( comment ) ; } * p = ( char ) c ; } if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; * p = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; c = ReadBlobByte ( image ) ; } else if ( isalnum ( c ) != MagickFalse ) { length = MagickPathExtent ; p = keyword ; do { if ( c == ( int ) '=' ) break ; if ( ( size_t ) ( p - keyword ) < ( MagickPathExtent - 1 ) ) * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; } while ( c != EOF ) ; * p = '\\\\0' ; p = options ; while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; if ( c == ( int ) '=' ) { c = ReadBlobByte ( image ) ; while ( ( c != ( int ) '}' ) && ( c != EOF ) ) { if ( ( size_t ) ( p - options + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; options = ( char * ) ResizeQuantumMemory ( options , length + MagickPathExtent , sizeof ( * options ) ) ; if ( options == ( char * ) NULL ) break ; p = options + strlen ( options ) ; } * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; if ( c == '\\\\\\\\' ) { c = ReadBlobByte ( image ) ; if ( c == ( int ) '}' ) { * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; } } if ( * options != '{' ) if ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) break ; } if ( options == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } * p = '\\\\0' ; if ( * options == '{' ) ( void ) CopyMagickString ( options , options + 1 , strlen ( options ) ) ; switch ( * keyword ) { case 'a' : case 'A' : { if ( LocaleCompare ( keyword , \"alpha-trait\" ) == 0 ) { ssize_t alpha_trait ; alpha_trait = ParseCommandOption ( MagickPixelTraitOptions , MagickFalse , options ) ; if ( alpha_trait < 0 ) break ; image -> alpha_trait = ( PixelTrait ) alpha_trait ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'b' : case 'B' : { if ( LocaleCompare ( keyword , \"background-color\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> background_color , exception ) ; break ; } if ( LocaleCompare ( keyword , \"blue-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . blue_primary . x = geometry_info . rho ; image -> chromaticity . blue_primary . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . blue_primary . y = image -> chromaticity . blue_primary . x ; break ; } if ( LocaleCompare ( keyword , \"border-color\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> border_color , exception ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'c' : case 'C' : { if ( LocaleCompare ( keyword , \"class\" ) == 0 ) { ssize_t storage_class ; storage_class = ParseCommandOption ( MagickClassOptions , MagickFalse , options ) ; if ( storage_class < 0 ) break ; image -> storage_class = ( ClassType ) storage_class ; break ; } if ( LocaleCompare ( keyword , \"colors\" ) == 0 ) { image -> colors = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"colorspace\" ) == 0 ) { ssize_t colorspace ; colorspace = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , options ) ; if ( colorspace < 0 ) break ; image -> colorspace = ( ColorspaceType ) colorspace ; break ; } if ( LocaleCompare ( keyword , \"compression\" ) == 0 ) { ssize_t compression ; compression = ParseCommandOption ( MagickCompressOptions , MagickFalse , options ) ; if ( compression < 0 ) break ; image -> compression = ( CompressionType ) compression ; break ; } if ( LocaleCompare ( keyword , \"columns\" ) == 0 ) { image -> columns = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'd' : case 'D' : { if ( LocaleCompare ( keyword , \"delay\" ) == 0 ) { image -> delay = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"depth\" ) == 0 ) { image -> depth = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"dispose\" ) == 0 ) { ssize_t dispose ; dispose = ParseCommandOption ( MagickDisposeOptions , MagickFalse , options ) ; if ( dispose < 0 ) break ; image -> dispose = ( DisposeType ) dispose ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'e' : case 'E' : { if ( LocaleCompare ( keyword , \"endian\" ) == 0 ) { ssize_t endian ; endian = ParseCommandOption ( MagickEndianOptions , MagickFalse , options ) ; if ( endian < 0 ) break ; image -> endian = ( EndianType ) endian ; break ; } if ( LocaleCompare ( keyword , \"error\" ) == 0 ) { image -> error . mean_error_per_pixel = StringToDouble ( options , ( char * * ) NULL ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'g' : case 'G' : { if ( LocaleCompare ( keyword , \"gamma\" ) == 0 ) { image -> gamma = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"green-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . green_primary . x = geometry_info . rho ; image -> chromaticity . green_primary . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . green_primary . y = image -> chromaticity . green_primary . x ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'i' : case 'I' : { if ( LocaleCompare ( keyword , \"id\" ) == 0 ) { ( void ) CopyMagickString ( id , options , MagickPathExtent ) ; break ; } if ( LocaleCompare ( keyword , \"iterations\" ) == 0 ) { image -> iterations = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'm' : case 'M' : { if ( LocaleCompare ( keyword , \"magick-signature\" ) == 0 ) { signature = ( unsigned int ) StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"mattecolor\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> matte_color , exception ) ; break ; } if ( LocaleCompare ( keyword , \"maximum-error\" ) == 0 ) { image -> error . normalized_maximum_error = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"mean-error\" ) == 0 ) { image -> error . normalized_mean_error = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"montage\" ) == 0 ) { ( void ) CloneString ( & image -> montage , options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'n' : case 'N' : { if ( LocaleCompare ( keyword , \"number-channels\" ) == 0 ) { image -> number_channels = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"number-meta-channels\" ) == 0 ) { image -> number_meta_channels = StringToUnsignedLong ( options ) ; <S2SV_StartBug> break ; <S2SV_EndBug> } break ; } case 'o' : case 'O' : { if ( LocaleCompare ( keyword , \"orientation\" ) == 0 ) { ssize_t orientation ; orientation = ParseCommandOption ( MagickOrientationOptions , MagickFalse , options ) ; if ( orientation < 0 ) break ; image -> orientation = ( OrientationType ) orientation ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'p' : case 'P' : { if ( LocaleCompare ( keyword , \"page\" ) == 0 ) { char * geometry ; geometry = GetPageGeometry ( options ) ; ( void ) ParseAbsoluteGeometry ( geometry , & image -> page ) ; geometry = DestroyString ( geometry ) ; break ; } if ( LocaleCompare ( keyword , \"pixel-intensity\" ) == 0 ) { ssize_t intensity ; intensity = ParseCommandOption ( MagickPixelIntensityOptions , MagickFalse , options ) ; if ( intensity < 0 ) break ; image -> intensity = ( PixelIntensityMethod ) intensity ; break ; } if ( ( LocaleNCompare ( keyword , \"profile:\" , 8 ) == 0 ) || ( LocaleNCompare ( keyword , \"profile-\" , 8 ) == 0 ) ) { if ( profiles == ( LinkedListInfo * ) NULL ) profiles = NewLinkedList ( 0 ) ; ( void ) AppendValueToLinkedList ( profiles , AcquireString ( keyword + 8 ) ) ; profile = BlobToStringInfo ( ( const void * ) NULL , ( size_t ) StringToLong ( options ) ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) SetImageProfile ( image , keyword + 8 , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'q' : case 'Q' : { if ( LocaleCompare ( keyword , \"quality\" ) == 0 ) { image -> quality = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'r' : case 'R' : { if ( LocaleCompare ( keyword , \"red-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . red_primary . x = geometry_info . rho ; if ( ( flags & SigmaValue ) != 0 ) image -> chromaticity . red_primary . y = geometry_info . sigma ; break ; } if ( LocaleCompare ( keyword , \"rendering-intent\" ) == 0 ) { ssize_t rendering_intent ; rendering_intent = ParseCommandOption ( MagickIntentOptions , MagickFalse , options ) ; if ( rendering_intent < 0 ) break ; image -> rendering_intent = ( RenderingIntent ) rendering_intent ; break ; } if ( LocaleCompare ( keyword , \"resolution\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> resolution . x = geometry_info . rho ; image -> resolution . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> resolution . y = image -> resolution . x ; break ; } if ( LocaleCompare ( keyword , \"rows\" ) == 0 ) { image -> rows = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 's' : case 'S' : { if ( LocaleCompare ( keyword , \"scene\" ) == 0 ) { image -> scene = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 't' : case 'T' : { if ( LocaleCompare ( keyword , \"ticks-per-second\" ) == 0 ) { image -> ticks_per_second = ( ssize_t ) StringToLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"tile-offset\" ) == 0 ) { char * geometry ; geometry = GetPageGeometry ( options ) ; ( void ) ParseAbsoluteGeometry ( geometry , & image -> tile_offset ) ; geometry = DestroyString ( geometry ) ; } if ( LocaleCompare ( keyword , \"type\" ) == 0 ) { ssize_t type ; type = ParseCommandOption ( MagickTypeOptions , MagickFalse , options ) ; if ( type < 0 ) break ; image -> type = ( ImageType ) type ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'u' : case 'U' : { if ( LocaleCompare ( keyword , \"units\" ) == 0 ) { ssize_t units ; units = ParseCommandOption ( MagickResolutionOptions , MagickFalse , options ) ; if ( units < 0 ) break ; image -> units = ( ResolutionType ) units ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'w' : case 'W' : { if ( LocaleCompare ( keyword , \"white-point\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . white_point . x = geometry_info . rho ; image -> chromaticity . white_point . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . white_point . y = image -> chromaticity . white_point . x ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } default : { ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } } } else c = ReadBlobByte ( image ) ; while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; } options = DestroyString ( options ) ; ( void ) ReadBlobByte ( image ) ; if ( ( LocaleCompare ( id , \"MagickCache\" ) != 0 ) || ( image -> storage_class == UndefinedClass ) || ( image -> compression == UndefinedCompression ) || ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( signature != GetMagickSignature ( ( const StringInfo * ) NULL ) ) ThrowReaderException ( CacheError , \"IncompatibleAPI\" ) ; if ( image -> montage != ( char * ) NULL ) { register char * p ; length = MagickPathExtent ; image -> directory = AcquireString ( ( char * ) NULL ) ; p = image -> directory ; do { * p = '\\\\0' ; if ( ( strlen ( image -> directory ) + MagickPathExtent ) >= length ) { length <<= 1 ; image -> directory = ( char * ) ResizeQuantumMemory ( image -> directory , length + MagickPathExtent , sizeof ( * image -> directory ) ) ; if ( image -> directory == ( char * ) NULL ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; p = image -> directory + strlen ( image -> directory ) ; } c = ReadBlobByte ( image ) ; * p ++ = ( char ) c ; } while ( c != ( int ) '\\\\0' ) ; } if ( profiles != ( LinkedListInfo * ) NULL ) { const char * name ; const StringInfo * profile ; register unsigned char * p ; ResetLinkedListIterator ( profiles ) ; name = ( const char * ) GetNextValueInLinkedList ( profiles ) ; while ( name != ( const char * ) NULL ) { profile = GetImageProfile ( image , name ) ; if ( profile != ( StringInfo * ) NULL ) { p = GetStringInfoDatum ( profile ) ; count = ReadBlob ( image , GetStringInfoLength ( profile ) , p ) ; } name = ( const char * ) GetNextValueInLinkedList ( profiles ) ; } profiles = DestroyLinkedList ( profiles , RelinquishMagickMemory ) ; } depth = GetImageQuantumDepth ( image , MagickFalse ) ; if ( image -> storage_class == PseudoClass ) { image -> colormap = ( PixelInfo * ) AcquireQuantumMemory ( image -> colors + 1 , sizeof ( * image -> colormap ) ) ; if ( image -> colormap == ( PixelInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( image -> colors != 0 ) { size_t packet_size ; unsigned char * colormap ; packet_size = ( size_t ) ( 3UL * depth / 8UL ) ; colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , packet_size * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , packet_size * image -> colors , colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) { colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = colormap ; switch ( depth ) { default : colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; ThrowReaderException ( CorruptImageError , \"ImageDepthNotSupported\" ) ; case 8 : { unsigned char pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . red = ScaleCharToQuantum ( pixel ) ; p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( pixel ) ; p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( pixel ) ; } break ; } case 16 : { unsigned short pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . red = ScaleShortToQuantum ( pixel ) ; p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . green = ScaleShortToQuantum ( pixel ) ; p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . blue = ScaleShortToQuantum ( pixel ) ; } break ; } case 32 : { unsigned int pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . red = ScaleLongToQuantum ( pixel ) ; p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . green = ScaleLongToQuantum ( pixel ) ; p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . blue = ScaleLongToQuantum ( pixel ) ; } break ; } } colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( ( AcquireMagickResource ( WidthResource , image -> columns ) == MagickFalse ) || ( AcquireMagickResource ( HeightResource , image -> rows ) == MagickFalse ) ) ThrowReaderException ( ImageError , \"WidthOrHeightExceedsLimit\" ) ; status = PersistPixelCache ( image , cache_filename , MagickTrue , & offset , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( CacheError , \"UnableToPersistPixelCache\" ) ; do { c = ReadBlobByte ( image ) ; } while ( ( isgraph ( c ) == MagickFalse ) && ( c != EOF ) ) ; if ( c != EOF ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( c != EOF ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> options ) ; if ( image -> number_meta_channels > MaxPixelChannels ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0835\n\n```\nCWE-119 void impeg2d_dec_pic_data_thread ( dec_state_t * ps_dec ) { WORD32 i4_continue_decode ; WORD32 i4_cur_row , temp ; UWORD32 u4_bits_read ; WORD32 i4_dequeue_job ; IMPEG2D_ERROR_CODES_T e_error ; i4_cur_row = ps_dec -> u2_mb_y + 1 ; i4_continue_decode = 1 ; i4_dequeue_job = 1 ; do { if ( i4_cur_row > ps_dec -> u2_num_vert_mb ) { i4_continue_decode = 0 ; break ; } { if ( ( ps_dec -> i4_num_cores > 1 ) && ( i4_dequeue_job ) ) { job_t s_job ; IV_API_CALL_STATUS_T e_ret ; UWORD8 * pu1_buf ; e_ret = impeg2_jobq_dequeue ( ps_dec -> pv_jobq , & s_job , sizeof ( s_job ) , 1 , 1 ) ; if ( e_ret != IV_SUCCESS ) break ; if ( CMD_PROCESS == s_job . i4_cmd ) { pu1_buf = ps_dec -> pu1_inp_bits_buf + s_job . i4_bistream_ofst ; impeg2d_bit_stream_init ( & ( ps_dec -> s_bit_stream ) , pu1_buf , ( ps_dec -> u4_num_inp_bytes - s_job . i4_bistream_ofst ) + 8 ) ; i4_cur_row = s_job . i2_start_mb_y ; ps_dec -> i4_start_mb_y = s_job . i2_start_mb_y ; ps_dec -> i4_end_mb_y = s_job . i2_end_mb_y ; ps_dec -> u2_mb_x = 0 ; ps_dec -> u2_mb_y = ps_dec -> i4_start_mb_y ; ps_dec -> u2_num_mbs_left = ( ps_dec -> i4_end_mb_y - ps_dec -> i4_start_mb_y ) * ps_dec -> u2_num_horiz_mb ; } else { WORD32 start_row ; WORD32 num_rows ; start_row = s_job . i2_start_mb_y << 4 ; num_rows = MIN ( ( s_job . i2_end_mb_y << 4 ) , ps_dec -> u2_vertical_size ) ; num_rows -= start_row ; impeg2d_format_convert ( ps_dec , ps_dec -> ps_disp_pic , ps_dec -> ps_disp_frm_buf , start_row , num_rows ) ; break ; } } e_error = impeg2d_dec_slice ( ps_dec ) ; if ( ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE != e_error ) { impeg2d_next_start_code ( ps_dec ) ; } } while ( 1 ) { u4_bits_read = impeg2d_bit_stream_nxt ( & ps_dec -> s_bit_stream , START_CODE_LEN ) ; temp = u4_bits_read & 0xFF ; i4_continue_decode = ( ( ( u4_bits_read >> 8 ) == 0x01 ) && ( temp ) && ( temp <= 0xAF ) ) ; <S2SV_StartBug> if ( i4_continue_decode ) <S2SV_EndBug> { if ( ( temp - 1 ) == i4_cur_row ) { i4_dequeue_job = 0 ; break ; } if ( temp < ps_dec -> i4_end_mb_y ) { i4_cur_row = ps_dec -> u2_mb_y ; } else { i4_dequeue_job = 1 ; } break ; } else break ; } } while ( i4_continue_decode ) ; if ( ps_dec -> i4_num_cores > 1 ) { while ( 1 ) { job_t s_job ; IV_API_CALL_STATUS_T e_ret ; e_ret = impeg2_jobq_dequeue ( ps_dec -> pv_jobq , & s_job , sizeof ( s_job ) , 1 , 1 ) ; if ( e_ret != IV_SUCCESS ) break ; if ( CMD_FMTCONV == s_job . i4_cmd ) { WORD32 start_row ; WORD32 num_rows ; start_row = s_job . i2_start_mb_y << 4 ; num_rows = MIN ( ( s_job . i2_end_mb_y << 4 ) , ps_dec -> u2_vertical_size ) ; num_rows -= start_row ; impeg2d_format_convert ( ps_dec , ps_dec -> ps_disp_pic , ps_dec -> ps_disp_frm_buf , start_row , num_rows ) ; } } } else { if ( ( NULL != ps_dec -> ps_disp_pic ) && ( ( 0 == ps_dec -> u4_share_disp_buf ) || ( IV_YUV_420P != ps_dec -> i4_chromaFormat ) ) ) impeg2d_format_convert ( ps_dec , ps_dec -> ps_disp_pic , ps_dec -> ps_disp_frm_buf , 0 , ps_dec -> u2_vertical_size ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( 1 == ps_dec -> i4_num_cores && 0 == ps_dec -> u2_num_mbs_left ) { i4_continue_decode = 0 ; android_errorWriteLog ( 0x534e4554 , \"26070014\" ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 static int udf_readdir ( struct file * file , struct dir_context * ctx ) { struct inode * dir = file_inode ( file ) ; struct udf_inode_info * iinfo = UDF_I ( dir ) ; struct udf_fileident_bh fibh = { . sbh = NULL , . ebh = NULL } ; struct fileIdentDesc * fi = NULL ; struct fileIdentDesc cfi ; int block , iblock ; loff_t nf_pos ; int flen ; unsigned char * fname = NULL ; unsigned char * nameptr ; uint16_t liu ; uint8_t lfi ; loff_t size = udf_ext0_offset ( dir ) + dir -> i_size ; struct buffer_head * tmp , * bha [ 16 ] ; struct kernel_lb_addr eloc ; uint32_t elen ; sector_t offset ; int i , num , ret = 0 ; struct extent_position epos = { NULL , 0 , { 0 , 0 } } ; if ( ctx -> pos == 0 ) { if ( ! dir_emit_dot ( file , ctx ) ) return 0 ; ctx -> pos = 1 ; } nf_pos = ( ctx -> pos - 1 ) << 2 ; if ( nf_pos >= size ) goto out ; fname = kmalloc ( UDF_NAME_LEN , GFP_NOFS ) ; if ( ! fname ) { ret = - ENOMEM ; goto out ; } if ( nf_pos == 0 ) nf_pos = udf_ext0_offset ( dir ) ; fibh . soffset = fibh . eoffset = nf_pos & ( dir -> i_sb -> s_blocksize - 1 ) ; if ( iinfo -> i_alloc_type != ICBTAG_FLAG_AD_IN_ICB ) { if ( inode_bmap ( dir , nf_pos >> dir -> i_sb -> s_blocksize_bits , & epos , & eloc , & elen , & offset ) != ( EXT_RECORDED_ALLOCATED >> 30 ) ) { ret = - ENOENT ; goto out ; } block = udf_get_lb_pblock ( dir -> i_sb , & eloc , offset ) ; if ( ( ++ offset << dir -> i_sb -> s_blocksize_bits ) < elen ) { if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_SHORT ) epos . offset -= sizeof ( struct short_ad ) ; else if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_LONG ) epos . offset -= sizeof ( struct long_ad ) ; } else { offset = 0 ; } if ( ! ( fibh . sbh = fibh . ebh = udf_tread ( dir -> i_sb , block ) ) ) { ret = - EIO ; goto out ; } if ( ! ( offset & ( ( 16 >> ( dir -> i_sb -> s_blocksize_bits - 9 ) ) - 1 ) ) ) { i = 16 >> ( dir -> i_sb -> s_blocksize_bits - 9 ) ; if ( i + offset > ( elen >> dir -> i_sb -> s_blocksize_bits ) ) i = ( elen >> dir -> i_sb -> s_blocksize_bits ) - offset ; for ( num = 0 ; i > 0 ; i -- ) { block = udf_get_lb_pblock ( dir -> i_sb , & eloc , offset + i ) ; tmp = udf_tgetblk ( dir -> i_sb , block ) ; if ( tmp && ! buffer_uptodate ( tmp ) && ! buffer_locked ( tmp ) ) bha [ num ++ ] = tmp ; else brelse ( tmp ) ; } if ( num ) { ll_rw_block ( READA , num , bha ) ; for ( i = 0 ; i < num ; i ++ ) brelse ( bha [ i ] ) ; } } } while ( nf_pos < size ) { struct kernel_lb_addr tloc ; ctx -> pos = ( nf_pos >> 2 ) + 1 ; fi = udf_fileident_read ( dir , & nf_pos , & fibh , & cfi , & epos , & eloc , & elen , & offset ) ; if ( ! fi ) goto out ; liu = le16_to_cpu ( cfi . lengthOfImpUse ) ; lfi = cfi . lengthFileIdent ; if ( fibh . sbh == fibh . ebh ) { nameptr = fi -> fileIdent + liu ; } else { int poffset ; poffset = fibh . soffset + sizeof ( struct fileIdentDesc ) + liu + lfi ; if ( poffset >= lfi ) { nameptr = ( char * ) ( fibh . ebh -> b_data + poffset - lfi ) ; } else { nameptr = fname ; memcpy ( nameptr , fi -> fileIdent + liu , lfi - poffset ) ; memcpy ( nameptr + lfi - poffset , fibh . ebh -> b_data , poffset ) ; } } if ( ( cfi . fileCharacteristics & FID_FILE_CHAR_DELETED ) != 0 ) { if ( ! UDF_QUERY_FLAG ( dir -> i_sb , UDF_FLAG_UNDELETE ) ) continue ; } if ( ( cfi . fileCharacteristics & FID_FILE_CHAR_HIDDEN ) != 0 ) { if ( ! UDF_QUERY_FLAG ( dir -> i_sb , UDF_FLAG_UNHIDE ) ) continue ; } if ( cfi . fileCharacteristics & FID_FILE_CHAR_PARENT ) { if ( ! dir_emit_dotdot ( file , ctx ) ) goto out ; continue ; } <S2SV_StartBug> flen = udf_get_filename ( dir -> i_sb , nameptr , fname , lfi ) ; <S2SV_EndBug> if ( ! flen ) continue ; tloc = lelb_to_cpu ( cfi . icb . extLocation ) ; iblock = udf_get_lb_pblock ( dir -> i_sb , & tloc , 0 ) ; if ( ! dir_emit ( ctx , fname , flen , iblock , DT_UNKNOWN ) ) goto out ; } ctx -> pos = ( nf_pos >> 2 ) + 1 ; out : if ( fibh . sbh != fibh . ebh ) brelse ( fibh . ebh ) ; brelse ( fibh . sbh ) ; brelse ( epos . bh ) ; kfree ( fname ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , nameptr , lfi , fname , UDF_NAME_LEN <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0217\n\n```\nCWE-399 <S2SV_StartBug> static void xen_netbk_idx_release ( struct xen_netbk * netbk , u16 pending_idx ) <S2SV_EndBug> { struct xenvif * vif ; struct pending_tx_info * pending_tx_info ; pending_ring_idx_t index ; if ( netbk -> mmap_pages [ pending_idx ] == NULL ) return ; pending_tx_info = & netbk -> pending_tx_info [ pending_idx ] ; vif = pending_tx_info -> vif ; <S2SV_StartBug> make_tx_response ( vif , & pending_tx_info -> req , XEN_NETIF_RSP_OKAY ) ; <S2SV_EndBug> index = pending_index ( netbk -> pending_prod ++ ) ; netbk -> pending_ring [ index ] = pending_idx ; xenvif_put ( vif ) ; netbk -> mmap_pages [ pending_idx ] -> mapping = 0 ; put_page ( netbk -> mmap_pages [ pending_idx ] ) ; netbk -> mmap_pages [ pending_idx ] = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , u16 pending_idx , u8 status <S2SV_ModStart> -> req , status <S2SV_ModEnd> ) ; index\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5207\n\n```\nCWE-269 void bandwidth_pid ( pid_t pid , const char * command , const char * dev , int down , int up ) { EUID_ASSERT ( ) ; EUID_ROOT ( ) ; char * comm = pid_proc_comm ( pid ) ; EUID_USER ( ) ; if ( ! comm ) { fprintf ( stderr , \"Error:<S2SV_blank>cannot<S2SV_blank>find<S2SV_blank>sandbox\\\\n\" ) ; exit ( 1 ) ; } if ( strcmp ( comm , \"firejail\" ) != 0 ) { fprintf ( stderr , \"Error:<S2SV_blank>cannot<S2SV_blank>find<S2SV_blank>sandbox\\\\n\" ) ; exit ( 1 ) ; } free ( comm ) ; char * name ; if ( asprintf ( & name , \"/run/firejail/network/%d-netmap\" , pid ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( name , & s ) == - 1 ) { fprintf ( stderr , \"Error:<S2SV_blank>the<S2SV_blank>sandbox<S2SV_blank>doesn\\'t<S2SV_blank>use<S2SV_blank>a<S2SV_blank>new<S2SV_blank>network<S2SV_blank>namespace\\\\n\" ) ; exit ( 1 ) ; } pid_t child ; if ( find_child ( pid , & child ) == - 1 ) { fprintf ( stderr , \"Error:<S2SV_blank>cannot<S2SV_blank>join<S2SV_blank>the<S2SV_blank>network<S2SV_blank>namespace\\\\n\" ) ; exit ( 1 ) ; } EUID_ROOT ( ) ; if ( join_namespace ( child , \"net\" ) ) { fprintf ( stderr , \"Error:<S2SV_blank>cannot<S2SV_blank>join<S2SV_blank>the<S2SV_blank>network<S2SV_blank>namespace\\\\n\" ) ; exit ( 1 ) ; } if ( strcmp ( command , \"set\" ) == 0 ) bandwidth_set ( pid , dev , down , up ) ; else if ( strcmp ( command , \"clear\" ) == 0 ) bandwidth_remove ( pid , dev ) ; char * devname = NULL ; if ( dev ) { char * fname ; if ( asprintf ( & fname , \"%s/%d-netmap\" , RUN_FIREJAIL_NETWORK_DIR , ( int ) pid ) == - 1 ) errExit ( \"asprintf\" ) ; FILE * fp = fopen ( fname , \"r\" ) ; if ( ! fp ) { fprintf ( stderr , \"Error:<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>network<S2SV_blank>map<S2SV_blank>file<S2SV_blank>%s\\\\n\" , fname ) ; exit ( 1 ) ; } char buf [ 1024 ] ; int len = strlen ( dev ) ; while ( fgets ( buf , 1024 , fp ) ) { char * ptr = strchr ( buf , '\\\\n' ) ; if ( ptr ) * ptr = '\\\\0' ; if ( * buf == '\\\\0' ) break ; if ( strncmp ( buf , dev , len ) == 0 && buf [ len ] == ':' ) { devname = strdup ( buf + len + 1 ) ; if ( ! devname ) errExit ( \"strdup\" ) ; if ( if_nametoindex ( devname ) == 0 ) { fprintf ( stderr , \"Error:<S2SV_blank>cannot<S2SV_blank>find<S2SV_blank>network<S2SV_blank>device<S2SV_blank>%s\\\\n\" , devname ) ; exit ( 1 ) ; } break ; } } free ( fname ) ; fclose ( fp ) ; } char * cmd = NULL ; if ( devname ) { if ( strcmp ( command , \"set\" ) == 0 ) { if ( asprintf ( & cmd , \"%s/firejail/fshaper.sh<S2SV_blank>--%s<S2SV_blank>%s<S2SV_blank>%d<S2SV_blank>%d\" , LIBDIR , command , devname , down , up ) == - 1 ) errExit ( \"asprintf\" ) ; } else { if ( asprintf ( & cmd , \"%s/firejail/fshaper.sh<S2SV_blank>--%s<S2SV_blank>%s\" , LIBDIR , command , devname ) == - 1 ) errExit ( \"asprintf\" ) ; } } else { if ( asprintf ( & cmd , \"%s/firejail/fshaper.sh<S2SV_blank>--%s\" , LIBDIR , command ) == - 1 ) errExit ( \"asprintf\" ) ; } assert ( cmd ) ; environ = NULL ; if ( setreuid ( 0 , 0 ) ) errExit ( \"setreuid\" ) ; if ( setregid ( 0 , 0 ) ) errExit ( \"setregid\" ) ; <S2SV_StartBug> if ( ! cfg . shell ) <S2SV_EndBug> cfg . shell = guess_shell ( ) ; if ( ! cfg . shell ) { fprintf ( stderr , \"Error:<S2SV_blank>no<S2SV_blank>POSIX<S2SV_blank>shell<S2SV_blank>found,<S2SV_blank>please<S2SV_blank>use<S2SV_blank>--shell<S2SV_blank>command<S2SV_blank>line<S2SV_blank>option\\\\n\" ) ; exit ( 1 ) ; } char * arg [ 4 ] ; <S2SV_StartBug> arg [ 0 ] = cfg . shell ; <S2SV_EndBug> arg [ 1 ] = \"-c\" ; arg [ 2 ] = cmd ; arg [ 3 ] = NULL ; clearenv ( ) ; execvp ( arg [ 0 ] , arg ) ; errExit ( \"execvp\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"setregid\" ) ; <S2SV_ModEnd> char * arg <S2SV_ModStart> 0 ] = \"/bin/sh\" <S2SV_ModEnd> ; arg [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int64_t vp9_rd_pick_inter_mode_sb ( VP9_COMP * cpi , MACROBLOCK * x , <S2SV_EndBug> <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> int mi_row , int mi_col , <S2SV_StartBug> int * returnrate , <S2SV_EndBug> int64_t * returndistortion , BLOCK_SIZE bsize , PICK_MODE_CONTEXT * ctx , int64_t best_rd_so_far ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_EndBug> <S2SV_StartBug> MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> const struct segmentation * const seg = & cm -> seg ; <S2SV_StartBug> MB_PREDICTION_MODE this_mode ; <S2SV_EndBug> MV_REFERENCE_FRAME ref_frame , second_ref_frame ; unsigned char segment_id = mbmi -> segment_id ; <S2SV_StartBug> int comp_pred , i ; <S2SV_EndBug> int_mv frame_mv [ MB_MODE_COUNT ] [ MAX_REF_FRAMES ] ; struct buf_2d yv12_mb [ 4 ] [ MAX_MB_PLANE ] ; <S2SV_StartBug> int_mv single_newmv [ MAX_REF_FRAMES ] = { { 0 } } ; <S2SV_EndBug> static const int flag_list [ 4 ] = { 0 , VP9_LAST_FLAG , VP9_GOLD_FLAG , VP9_ALT_FLAG } ; int64_t best_rd = best_rd_so_far ; <S2SV_StartBug> int64_t best_tx_rd [ TX_MODES ] ; <S2SV_EndBug> int64_t best_tx_diff [ TX_MODES ] ; int64_t best_pred_diff [ REFERENCE_MODES ] ; int64_t best_pred_rd [ REFERENCE_MODES ] ; int64_t best_filter_rd [ SWITCHABLE_FILTER_CONTEXTS ] ; int64_t best_filter_diff [ SWITCHABLE_FILTER_CONTEXTS ] ; <S2SV_StartBug> MB_MODE_INFO best_mbmode = { 0 } ; <S2SV_EndBug> <S2SV_StartBug> int mode_index , best_mode_index = 0 ; <S2SV_EndBug> unsigned int ref_costs_single [ MAX_REF_FRAMES ] , ref_costs_comp [ MAX_REF_FRAMES ] ; <S2SV_StartBug> vp9_prob comp_mode_p ; <S2SV_EndBug> int64_t best_intra_rd = INT64_MAX ; <S2SV_StartBug> int64_t best_inter_rd = INT64_MAX ; <S2SV_EndBug> <S2SV_StartBug> MB_PREDICTION_MODE best_intra_mode = DC_PRED ; <S2SV_EndBug> MV_REFERENCE_FRAME best_inter_ref_frame = LAST_FRAME ; INTERP_FILTER tmp_best_filter = SWITCHABLE ; int rate_uv_intra [ TX_SIZES ] , rate_uv_tokenonly [ TX_SIZES ] ; int64_t dist_uv [ TX_SIZES ] ; int skip_uv [ TX_SIZES ] ; <S2SV_StartBug> MB_PREDICTION_MODE mode_uv [ TX_SIZES ] ; <S2SV_EndBug> <S2SV_StartBug> int64_t mode_distortions [ MB_MODE_COUNT ] = { - 1 } ; <S2SV_EndBug> <S2SV_StartBug> int intra_cost_penalty = 20 * vp9_dc_quant ( cm -> base_qindex , cm -> y_dc_delta_q ) ; <S2SV_EndBug> const int bws = num_8x8_blocks_wide_lookup [ bsize ] / 2 ; const int bhs = num_8x8_blocks_high_lookup [ bsize ] / 2 ; int best_skip2 = 0 ; <S2SV_StartBug> int mode_skip_mask = 0 ; <S2SV_EndBug> <S2SV_StartBug> int mode_skip_start = cpi -> sf . mode_skip_start + 1 ; <S2SV_EndBug> <S2SV_StartBug> const int * const rd_threshes = cpi -> rd_threshes [ segment_id ] [ bsize ] ; <S2SV_EndBug> <S2SV_StartBug> const int * const rd_thresh_freq_fact = cpi -> rd_thresh_freq_fact [ bsize ] ; <S2SV_EndBug> <S2SV_StartBug> const int mode_search_skip_flags = cpi -> sf . mode_search_skip_flags ; <S2SV_EndBug> const int intra_y_mode_mask = cpi -> sf . intra_y_mode_mask [ max_txsize_lookup [ bsize ] ] ; int disable_inter_mode_mask = cpi -> sf . disable_inter_mode_mask [ bsize ] ; x -> skip_encode = cpi -> sf . skip_encode_frame && x -> q_index < QIDX_SKIP_THRESH ; <S2SV_StartBug> estimate_ref_frame_costs ( cpi , segment_id , ref_costs_single , ref_costs_comp , <S2SV_EndBug> & comp_mode_p ) ; for ( i = 0 ; i < REFERENCE_MODES ; ++ i ) best_pred_rd [ i ] = INT64_MAX ; <S2SV_StartBug> for ( i = 0 ; i < TX_MODES ; i ++ ) <S2SV_EndBug> best_tx_rd [ i ] = INT64_MAX ; for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) best_filter_rd [ i ] = INT64_MAX ; for ( i = 0 ; i < TX_SIZES ; i ++ ) rate_uv_intra [ i ] = INT_MAX ; for ( i = 0 ; i < MAX_REF_FRAMES ; ++ i ) x -> pred_sse [ i ] = INT_MAX ; <S2SV_StartBug> * returnrate = INT_MAX ; <S2SV_EndBug> for ( ref_frame = LAST_FRAME ; ref_frame <= ALTREF_FRAME ; ++ ref_frame ) { x -> pred_mv_sad [ ref_frame ] = INT_MAX ; if ( cpi -> ref_frame_flags & flag_list [ ref_frame ] ) { <S2SV_StartBug> vp9_setup_buffer_inter ( cpi , x , tile , <S2SV_EndBug> ref_frame , bsize , mi_row , mi_col , frame_mv [ NEARESTMV ] , frame_mv [ NEARMV ] , yv12_mb ) ; } frame_mv [ NEWMV ] [ ref_frame ] . as_int = INVALID_MV ; frame_mv [ ZEROMV ] [ ref_frame ] . as_int = 0 ; } for ( ref_frame = LAST_FRAME ; ref_frame <= ALTREF_FRAME ; ++ ref_frame ) { <S2SV_StartBug> static const int ref_frame_mask_all [ ] = { <S2SV_EndBug> 0x0 , 0x123291 , 0x25c444 , 0x39b722 } ; static const int ref_frame_mask_fixedmv [ ] = { 0x0 , 0x121281 , 0x24c404 , 0x080102 } ; if ( ! ( cpi -> ref_frame_flags & flag_list [ ref_frame ] ) ) { <S2SV_StartBug> mode_skip_mask |= ref_frame_mask_all [ ref_frame ] ; <S2SV_EndBug> <S2SV_StartBug> } else if ( cpi -> sf . reference_masking ) { <S2SV_EndBug> for ( i = LAST_FRAME ; i <= ALTREF_FRAME ; ++ i ) { if ( ( x -> pred_mv_sad [ ref_frame ] >> 2 ) > x -> pred_mv_sad [ i ] ) { <S2SV_StartBug> mode_skip_mask |= ref_frame_mask_fixedmv [ ref_frame ] ; <S2SV_EndBug> break ; } } } <S2SV_StartBug> if ( vp9_segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) && <S2SV_EndBug> <S2SV_StartBug> vp9_get_segdata ( seg , segment_id , SEG_LVL_REF_FRAME ) != ( int ) ref_frame ) { <S2SV_EndBug> <S2SV_StartBug> mode_skip_mask |= ref_frame_mask_all [ ref_frame ] ; <S2SV_EndBug> } } if ( vp9_segfeature_active ( seg , segment_id , SEG_LVL_SKIP ) ) { const int inter_non_zero_mode_mask = 0x1F7F7 ; mode_skip_mask |= inter_non_zero_mode_mask ; } <S2SV_StartBug> if ( ! vp9_segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) ) { <S2SV_EndBug> if ( cpi -> rc . is_src_frame_alt_ref && ( cpi -> oxcf . arnr_max_frames == 0 ) ) { <S2SV_StartBug> const int altref_zero_mask = <S2SV_EndBug> ~ ( ( 1 << THR_NEARESTA ) | ( 1 << THR_NEARA ) | ( 1 << THR_ZEROA ) ) ; mode_skip_mask |= altref_zero_mask ; if ( frame_mv [ NEARMV ] [ ALTREF_FRAME ] . as_int != 0 ) <S2SV_StartBug> mode_skip_mask |= ( 1 << THR_NEARA ) ; <S2SV_EndBug> if ( frame_mv [ NEARESTMV ] [ ALTREF_FRAME ] . as_int != 0 ) <S2SV_StartBug> mode_skip_mask |= ( 1 << THR_NEARESTA ) ; <S2SV_EndBug> } } if ( ( mi_row + bhs ) > cm -> mi_rows || ( mi_col + bws ) > cm -> mi_cols ) { const int new_modes_mask = ( 1 << THR_NEWMV ) | ( 1 << THR_NEWG ) | ( 1 << THR_NEWA ) | ( 1 << THR_COMP_NEWLA ) | ( 1 << THR_COMP_NEWGA ) ; mode_skip_mask |= new_modes_mask ; } <S2SV_StartBug> if ( bsize > cpi -> sf . max_intra_bsize ) { <S2SV_EndBug> <S2SV_StartBug> mode_skip_mask |= 0xFF30808 ; <S2SV_EndBug> } if ( ! x -> in_active_map ) { <S2SV_StartBug> int mode_index ; <S2SV_EndBug> assert ( cpi -> ref_frame_flags & VP9_LAST_FLAG ) ; if ( frame_mv [ NEARESTMV ] [ LAST_FRAME ] . as_int == 0 ) mode_index = THR_NEARESTMV ; else if ( frame_mv [ NEARMV ] [ LAST_FRAME ] . as_int == 0 ) mode_index = THR_NEARMV ; else mode_index = THR_ZEROMV ; mode_skip_mask = ~ ( 1 << mode_index ) ; mode_skip_start = MAX_MODES ; disable_inter_mode_mask = 0 ; } for ( mode_index = 0 ; mode_index < MAX_MODES ; ++ mode_index ) { int mode_excluded = 0 ; int64_t this_rd = INT64_MAX ; int disable_skip = 0 ; int compmode_cost = 0 ; int rate2 = 0 , rate_y = 0 , rate_uv = 0 ; int64_t distortion2 = 0 , distortion_y = 0 , distortion_uv = 0 ; int skippable = 0 ; <S2SV_StartBug> int64_t tx_cache [ TX_MODES ] ; <S2SV_EndBug> int i ; int this_skip2 = 0 ; int64_t total_sse = INT64_MAX ; int early_term = 0 ; <S2SV_StartBug> if ( mode_index == mode_skip_start ) { <S2SV_EndBug> <S2SV_StartBug> switch ( vp9_mode_order [ best_mode_index ] . ref_frame [ 0 ] ) { <S2SV_EndBug> case INTRA_FRAME : break ; case LAST_FRAME : <S2SV_StartBug> mode_skip_mask |= LAST_FRAME_MODE_MASK ; <S2SV_EndBug> break ; case GOLDEN_FRAME : <S2SV_StartBug> mode_skip_mask |= GOLDEN_FRAME_MODE_MASK ; <S2SV_EndBug> break ; case ALTREF_FRAME : <S2SV_StartBug> mode_skip_mask |= ALT_REF_MODE_MASK ; <S2SV_EndBug> break ; case NONE : case MAX_REF_FRAMES : assert ( 0 && \"Invalid<S2SV_blank>Reference<S2SV_blank>frame\" ) ; <S2SV_StartBug> } <S2SV_EndBug> } <S2SV_StartBug> if ( mode_skip_mask & ( 1 << mode_index ) ) <S2SV_EndBug> continue ; <S2SV_StartBug> if ( best_rd < ( ( int64_t ) rd_threshes [ mode_index ] * <S2SV_EndBug> rd_thresh_freq_fact [ mode_index ] >> 5 ) || rd_threshes [ mode_index ] == INT_MAX ) continue ; <S2SV_StartBug> this_mode = vp9_mode_order [ mode_index ] . mode ; <S2SV_EndBug> ref_frame = vp9_mode_order [ mode_index ] . ref_frame [ 0 ] ; if ( ref_frame != INTRA_FRAME && disable_inter_mode_mask & ( 1 << INTER_OFFSET ( this_mode ) ) ) continue ; second_ref_frame = vp9_mode_order [ mode_index ] . ref_frame [ 1 ] ; comp_pred = second_ref_frame > INTRA_FRAME ; if ( comp_pred ) { <S2SV_StartBug> if ( ( mode_search_skip_flags & FLAG_SKIP_COMP_BESTINTRA ) && <S2SV_EndBug> <S2SV_StartBug> vp9_mode_order [ best_mode_index ] . ref_frame [ 0 ] == INTRA_FRAME ) <S2SV_EndBug> continue ; if ( ( mode_search_skip_flags & FLAG_SKIP_COMP_REFMISMATCH ) && ref_frame != best_inter_ref_frame && second_ref_frame != best_inter_ref_frame ) continue ; mode_excluded = cm -> reference_mode == SINGLE_REFERENCE ; } else { if ( ref_frame != INTRA_FRAME ) mode_excluded = cm -> reference_mode == COMPOUND_REFERENCE ; } if ( ref_frame == INTRA_FRAME ) { <S2SV_StartBug> if ( ! ( intra_y_mode_mask & ( 1 << this_mode ) ) ) <S2SV_EndBug> continue ; if ( this_mode != DC_PRED ) { const unsigned int skip_intra_var_thresh = 64 ; if ( ( mode_search_skip_flags & FLAG_SKIP_INTRA_LOWVAR ) && x -> source_variance < skip_intra_var_thresh ) continue ; if ( ( mode_search_skip_flags & FLAG_SKIP_INTRA_BESTINTER ) && ( this_mode >= D45_PRED && this_mode <= TM_PRED ) ) { <S2SV_StartBug> if ( vp9_mode_order [ best_mode_index ] . ref_frame [ 0 ] > INTRA_FRAME ) <S2SV_EndBug> continue ; } if ( mode_search_skip_flags & FLAG_SKIP_INTRA_DIRMISMATCH ) { if ( conditional_skipintra ( this_mode , best_intra_mode ) ) continue ; } } } else { <S2SV_StartBug> if ( x -> in_active_map && <S2SV_EndBug> ! vp9_segfeature_active ( & cm -> seg , mbmi -> segment_id , SEG_LVL_SKIP ) ) <S2SV_StartBug> if ( ! check_best_zero_mv ( cpi , mbmi -> mode_context , frame_mv , <S2SV_EndBug> disable_inter_mode_mask , this_mode , ref_frame , second_ref_frame ) ) continue ; } mbmi -> mode = this_mode ; mbmi -> uv_mode = x -> in_active_map ? DC_PRED : this_mode ; mbmi -> ref_frame [ 0 ] = ref_frame ; mbmi -> ref_frame [ 1 ] = second_ref_frame ; mbmi -> interp_filter = cm -> interp_filter == SWITCHABLE ? EIGHTTAP : cm -> interp_filter ; <S2SV_StartBug> x -> skip = 0 ; <S2SV_EndBug> set_ref_ptrs ( cm , xd , ref_frame , second_ref_frame ) ; for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) { xd -> plane [ i ] . pre [ 0 ] = yv12_mb [ ref_frame ] [ i ] ; if ( comp_pred ) xd -> plane [ i ] . pre [ 1 ] = yv12_mb [ second_ref_frame ] [ i ] ; } <S2SV_StartBug> for ( i = 0 ; i < TX_MODES ; ++ i ) <S2SV_EndBug> tx_cache [ i ] = INT64_MAX ; # ifdef MODE_TEST_HIT_STATS cpi -> mode_test_hits [ bsize ] ++ ; # endif if ( ref_frame == INTRA_FRAME ) { TX_SIZE uv_tx ; <S2SV_StartBug> intra_super_block_yrd ( cpi , x , & rate_y , & distortion_y , & skippable , NULL , <S2SV_EndBug> <S2SV_StartBug> bsize , tx_cache , best_rd ) ; <S2SV_EndBug> if ( rate_y == INT_MAX ) continue ; <S2SV_StartBug> uv_tx = get_uv_tx_size_impl ( mbmi -> tx_size , bsize ) ; <S2SV_EndBug> if ( rate_uv_intra [ uv_tx ] == INT_MAX ) { <S2SV_StartBug> choose_intra_uv_mode ( cpi , ctx , bsize , uv_tx , <S2SV_EndBug> & rate_uv_intra [ uv_tx ] , & rate_uv_tokenonly [ uv_tx ] , & dist_uv [ uv_tx ] , & skip_uv [ uv_tx ] , & mode_uv [ uv_tx ] ) ; } rate_uv = rate_uv_tokenonly [ uv_tx ] ; distortion_uv = dist_uv [ uv_tx ] ; skippable = skippable && skip_uv [ uv_tx ] ; mbmi -> uv_mode = mode_uv [ uv_tx ] ; <S2SV_StartBug> rate2 = rate_y + x -> mbmode_cost [ mbmi -> mode ] + rate_uv_intra [ uv_tx ] ; <S2SV_EndBug> if ( this_mode != DC_PRED && this_mode != TM_PRED ) rate2 += intra_cost_penalty ; distortion2 = distortion_y + distortion_uv ; } else { <S2SV_StartBug> this_rd = handle_inter_mode ( cpi , x , tile , bsize , <S2SV_EndBug> tx_cache , & rate2 , & distortion2 , & skippable , <S2SV_StartBug> & rate_y , & distortion_y , <S2SV_EndBug> & rate_uv , & distortion_uv , & mode_excluded , & disable_skip , <S2SV_StartBug> & tmp_best_filter , frame_mv , <S2SV_EndBug> mi_row , mi_col , <S2SV_StartBug> single_newmv , & total_sse , best_rd ) ; <S2SV_EndBug> if ( this_rd == INT64_MAX ) continue ; compmode_cost = vp9_cost_bit ( comp_mode_p , comp_pred ) ; if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) rate2 += compmode_cost ; } if ( comp_pred ) { rate2 += ref_costs_comp [ ref_frame ] ; } else { rate2 += ref_costs_single [ ref_frame ] ; } if ( ! disable_skip ) { <S2SV_StartBug> const int mb_skip_allowed = ! vp9_segfeature_active ( seg , segment_id , <S2SV_EndBug> SEG_LVL_SKIP ) ; if ( skippable ) { rate2 -= ( rate_y + rate_uv ) ; <S2SV_StartBug> rate_uv = 0 ; <S2SV_EndBug> if ( mb_skip_allowed ) { int prob_skip_cost ; vp9_prob skip_prob = vp9_get_skip_prob ( cm , xd ) ; if ( skip_prob ) { prob_skip_cost = vp9_cost_bit ( skip_prob , 1 ) ; rate2 += prob_skip_cost ; } } <S2SV_StartBug> } else if ( mb_skip_allowed && ref_frame != INTRA_FRAME && ! xd -> lossless ) { <S2SV_EndBug> if ( RDCOST ( x -> rdmult , x -> rddiv , rate_y + rate_uv , distortion2 ) < RDCOST ( x -> rdmult , x -> rddiv , 0 , total_sse ) ) { rate2 += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 0 ) ; } else { rate2 += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 1 ) ; distortion2 = total_sse ; assert ( total_sse >= 0 ) ; rate2 -= ( rate_y + rate_uv ) ; <S2SV_StartBug> rate_y = 0 ; <S2SV_EndBug> rate_uv = 0 ; this_skip2 = 1 ; } <S2SV_StartBug> } else if ( mb_skip_allowed ) { <S2SV_EndBug> rate2 += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 0 ) ; } this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate2 , distortion2 ) ; } <S2SV_StartBug> if ( ref_frame == INTRA_FRAME ) { <S2SV_EndBug> if ( this_rd < best_intra_rd ) { best_intra_rd = this_rd ; best_intra_mode = mbmi -> mode ; } <S2SV_StartBug> } else { <S2SV_EndBug> if ( ! comp_pred && ! mode_excluded && this_rd < best_inter_rd ) { best_inter_rd = this_rd ; best_inter_ref_frame = ref_frame ; } } if ( ! disable_skip && ref_frame == INTRA_FRAME ) { for ( i = 0 ; i < REFERENCE_MODES ; ++ i ) best_pred_rd [ i ] = MIN ( best_pred_rd [ i ] , this_rd ) ; for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) <S2SV_StartBug> best_filter_rd [ i ] = MIN ( best_filter_rd [ i ] , this_rd ) ; <S2SV_EndBug> } if ( mode_distortions [ this_mode ] == - 1 || distortion2 < mode_distortions [ this_mode ] ) { mode_distortions [ this_mode ] = distortion2 ; } if ( this_rd < best_rd || x -> skip ) { int max_plane = MAX_MB_PLANE ; if ( ! mode_excluded ) { best_mode_index = mode_index ; if ( ref_frame == INTRA_FRAME ) { mbmi -> mv [ 0 ] . as_int = 0 ; max_plane = 1 ; } <S2SV_StartBug> * returnrate = rate2 ; <S2SV_EndBug> <S2SV_StartBug> * returndistortion = distortion2 ; <S2SV_EndBug> best_rd = this_rd ; best_mbmode = * mbmi ; best_skip2 = this_skip2 ; <S2SV_StartBug> if ( ! x -> select_txfm_size ) <S2SV_EndBug> <S2SV_StartBug> swap_block_ptr ( x , ctx , max_plane ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( ctx -> zcoeff_blk , x -> zcoeff_blk [ mbmi -> tx_size ] , <S2SV_EndBug> <S2SV_StartBug> sizeof ( uint8_t ) * ctx -> num_4x4_blk ) ; <S2SV_EndBug> if ( ( mode_search_skip_flags & FLAG_EARLY_TERMINATE ) && ( mode_index > MIN_EARLY_TERM_INDEX ) ) { <S2SV_StartBug> const int qstep = xd -> plane [ 0 ] . dequant [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> int scale = 4 ; <S2SV_EndBug> if ( x -> source_variance < UINT_MAX ) { const int var_adjust = ( x -> source_variance < 16 ) ; scale -= var_adjust ; } if ( ref_frame > INTRA_FRAME && distortion2 * scale < qstep * qstep ) { early_term = 1 ; } } } } if ( ! disable_skip && ref_frame != INTRA_FRAME ) { int64_t single_rd , hybrid_rd , single_rate , hybrid_rate ; if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) { single_rate = rate2 - compmode_cost ; hybrid_rate = rate2 ; } else { single_rate = rate2 ; hybrid_rate = rate2 + compmode_cost ; } single_rd = RDCOST ( x -> rdmult , x -> rddiv , single_rate , distortion2 ) ; hybrid_rd = RDCOST ( x -> rdmult , x -> rddiv , hybrid_rate , distortion2 ) ; if ( ! comp_pred ) { <S2SV_StartBug> if ( single_rd < best_pred_rd [ SINGLE_REFERENCE ] ) { <S2SV_EndBug> best_pred_rd [ SINGLE_REFERENCE ] = single_rd ; <S2SV_StartBug> } <S2SV_EndBug> } else { <S2SV_StartBug> if ( single_rd < best_pred_rd [ COMPOUND_REFERENCE ] ) { <S2SV_EndBug> best_pred_rd [ COMPOUND_REFERENCE ] = single_rd ; <S2SV_StartBug> } <S2SV_EndBug> } if ( hybrid_rd < best_pred_rd [ REFERENCE_MODE_SELECT ] ) best_pred_rd [ REFERENCE_MODE_SELECT ] = hybrid_rd ; if ( ! mode_excluded && cm -> interp_filter != BILINEAR ) { <S2SV_StartBug> int64_t ref = cpi -> rd_filter_cache [ cm -> interp_filter == SWITCHABLE ? <S2SV_EndBug> SWITCHABLE_FILTERS : cm -> interp_filter ] ; for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) { int64_t adj_rd ; if ( ref == INT64_MAX ) adj_rd = 0 ; <S2SV_StartBug> else if ( cpi -> rd_filter_cache [ i ] == INT64_MAX ) <S2SV_EndBug> <S2SV_StartBug> adj_rd = cpi -> mask_filter_rd - ref + 10 ; <S2SV_EndBug> else <S2SV_StartBug> adj_rd = cpi -> rd_filter_cache [ i ] - ref ; <S2SV_EndBug> adj_rd += this_rd ; best_filter_rd [ i ] = MIN ( best_filter_rd [ i ] , adj_rd ) ; } <S2SV_StartBug> } <S2SV_EndBug> } if ( bsize < BLOCK_32X32 ) { if ( bsize < BLOCK_16X16 ) tx_cache [ ALLOW_16X16 ] = tx_cache [ ALLOW_8X8 ] ; tx_cache [ ALLOW_32X32 ] = tx_cache [ ALLOW_16X16 ] ; } if ( ! mode_excluded && this_rd != INT64_MAX ) { for ( i = 0 ; i < TX_MODES && tx_cache [ i ] < INT64_MAX ; i ++ ) { int64_t adj_rd = INT64_MAX ; adj_rd = this_rd + tx_cache [ i ] - tx_cache [ cm -> tx_mode ] ; if ( adj_rd < best_tx_rd [ i ] ) best_tx_rd [ i ] = adj_rd ; } } if ( early_term ) break ; if ( x -> skip && ! comp_pred ) break ; } <S2SV_StartBug> if ( best_rd >= best_rd_so_far ) <S2SV_EndBug> return INT64_MAX ; if ( cpi -> sf . use_uv_intra_rd_estimate ) { <S2SV_StartBug> if ( vp9_mode_order [ best_mode_index ] . ref_frame [ 0 ] == INTRA_FRAME ) { <S2SV_EndBug> TX_SIZE uv_tx_size ; * mbmi = best_mbmode ; <S2SV_StartBug> uv_tx_size = get_uv_tx_size ( mbmi ) ; <S2SV_EndBug> rd_pick_intra_sbuv_mode ( cpi , x , ctx , & rate_uv_intra [ uv_tx_size ] , & rate_uv_tokenonly [ uv_tx_size ] , & dist_uv [ uv_tx_size ] , & skip_uv [ uv_tx_size ] , bsize < BLOCK_8X8 ? BLOCK_8X8 : bsize , uv_tx_size ) ; } } assert ( ( cm -> interp_filter == SWITCHABLE ) || ( cm -> interp_filter == best_mbmode . interp_filter ) || ! is_inter_block ( & best_mbmode ) ) ; <S2SV_StartBug> if ( cpi -> sf . adaptive_rd_thresh ) { <S2SV_EndBug> for ( mode_index = 0 ; mode_index < MAX_MODES ; ++ mode_index ) { int * const fact = & cpi -> rd_thresh_freq_fact [ bsize ] [ mode_index ] ; if ( mode_index == best_mode_index ) { * fact -= ( * fact >> 3 ) ; } else { * fact = MIN ( * fact + RD_THRESH_INC , cpi -> sf . adaptive_rd_thresh * RD_THRESH_MAX_FACT ) ; } } } * mbmi = best_mbmode ; x -> skip |= best_skip2 ; for ( i = 0 ; i < REFERENCE_MODES ; ++ i ) { if ( best_pred_rd [ i ] == INT64_MAX ) best_pred_diff [ i ] = INT_MIN ; else best_pred_diff [ i ] = best_rd - best_pred_rd [ i ] ; } if ( ! x -> skip ) { for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; i ++ ) { if ( best_filter_rd [ i ] == INT64_MAX ) best_filter_diff [ i ] = 0 ; else best_filter_diff [ i ] = best_rd - best_filter_rd [ i ] ; } if ( cm -> interp_filter == SWITCHABLE ) assert ( best_filter_diff [ SWITCHABLE_FILTERS ] == 0 ) ; <S2SV_StartBug> for ( i = 0 ; i < TX_MODES ; i ++ ) { <S2SV_EndBug> if ( best_tx_rd [ i ] == INT64_MAX ) best_tx_diff [ i ] = 0 ; else best_tx_diff [ i ] = best_rd - best_tx_rd [ i ] ; } } else { vp9_zero ( best_filter_diff ) ; vp9_zero ( best_tx_diff ) ; } if ( ! x -> in_active_map ) { assert ( mbmi -> ref_frame [ 0 ] == LAST_FRAME ) ; assert ( mbmi -> ref_frame [ 1 ] == NONE ) ; assert ( mbmi -> mode == NEARESTMV || mbmi -> mode == NEARMV || mbmi -> mode == ZEROMV ) ; assert ( frame_mv [ mbmi -> mode ] [ LAST_FRAME ] . as_int == 0 ) ; assert ( mbmi -> mode == mbmi -> uv_mode ) ; } set_ref_ptrs ( cm , xd , mbmi -> ref_frame [ 0 ] , mbmi -> ref_frame [ 1 ] ) ; store_coding_context ( x , ctx , best_mode_index , & mbmi -> ref_mvs [ mbmi -> ref_frame [ 0 ] ] [ 0 ] , & mbmi -> ref_mvs [ mbmi -> ref_frame [ 1 ] < 0 ? 0 : mbmi -> ref_frame [ 1 ] ] [ 0 ] , best_pred_diff , best_tx_diff , best_filter_diff ) ; return best_rd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> void <S2SV_ModEnd> vp9_rd_pick_inter_mode_sb ( VP9_COMP <S2SV_ModStart> * cpi , TileDataEnc * tile_data , <S2SV_ModStart> * x , <S2SV_ModEnd> int mi_row , <S2SV_ModStart> int mi_col , RD_COST * rd_cost , <S2SV_ModEnd> BLOCK_SIZE bsize , <S2SV_ModStart> -> common ; TileInfo * const tile_info = & tile_data -> tile_info ; RD_OPT * const rd_opt = & cpi -> rd ; SPEED_FEATURES * const sf = & cpi -> sf ; <S2SV_ModStart> ] -> mbmi ; MB_MODE_INFO_EXT * const mbmi_ext = x -> mbmi_ext <S2SV_ModStart> -> seg ; PREDICTION_MODE <S2SV_ModEnd> this_mode ; MV_REFERENCE_FRAME <S2SV_ModStart> comp_pred , i , k <S2SV_ModStart> 0 } } ; INTERP_FILTER single_inter_filter [ MB_MODE_COUNT ] [ MAX_REF_FRAMES ] ; int single_skippable [ MB_MODE_COUNT ] [ MAX_REF_FRAMES ] <S2SV_ModStart> best_rd_so_far ; int64_t <S2SV_ModEnd> best_pred_diff [ REFERENCE_MODES <S2SV_ModStart> ; MB_MODE_INFO best_mbmode ; int best_mode_skippable = 0 ; int midx <S2SV_ModEnd> , best_mode_index = <S2SV_ModStart> , best_mode_index = - 1 <S2SV_ModEnd> ; unsigned int <S2SV_ModStart> MAX_REF_FRAMES ] ; vpx_prob <S2SV_ModEnd> comp_mode_p ; int64_t <S2SV_ModStart> = INT64_MAX ; unsigned int best_pred_sse = UINT_MAX ; PREDICTION_MODE <S2SV_ModEnd> best_intra_mode = DC_PRED <S2SV_ModStart> best_intra_mode = DC_PRED <S2SV_ModEnd> ; int rate_uv_intra <S2SV_ModStart> TX_SIZES ] ; PREDICTION_MODE <S2SV_ModEnd> mode_uv [ TX_SIZES <S2SV_ModStart> TX_SIZES ] ; const <S2SV_ModEnd> int intra_cost_penalty = <S2SV_ModStart> int intra_cost_penalty = vp9_get_intra_cost_penalty ( <S2SV_ModEnd> cm -> base_qindex <S2SV_ModStart> cm -> y_dc_delta_q , cm -> bit_depth ) <S2SV_ModEnd> ; int best_skip2 <S2SV_ModStart> = 0 ; uint8_t ref_frame_skip_mask [ 2 ] = { 0 } ; uint16_t mode_skip_mask [ MAX_REF_FRAMES ] = { 0 } <S2SV_ModEnd> ; int mode_skip_start <S2SV_ModStart> int mode_skip_start = sf -> <S2SV_ModEnd> mode_skip_start + 1 <S2SV_ModStart> const rd_threshes = rd_opt -> threshes <S2SV_ModEnd> [ segment_id ] <S2SV_ModStart> const rd_thresh_freq_fact = tile_data -> thresh_freq_fact [ bsize ] ; int64_t mode_threshold [ MAX_MODES ] ; int * mode_map = tile_data -> mode_map <S2SV_ModEnd> [ bsize ] <S2SV_ModStart> int mode_search_skip_flags = sf -> mode_search_skip_flags ; int64_t mask_filter = 0 ; int64_t filter_cache [ SWITCHABLE_FILTER_CONTEXTS ] ; vp9_zero ( best_mbmode ) ; x -> skip_encode = sf -> <S2SV_ModEnd> skip_encode_frame && x <S2SV_ModStart> < QIDX_SKIP_THRESH ; for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; ++ i ) filter_cache [ i ] = INT64_MAX ; estimate_ref_frame_costs ( cm , xd <S2SV_ModEnd> , segment_id , <S2SV_ModStart> ; i < <S2SV_ModEnd> SWITCHABLE_FILTER_CONTEXTS ; i <S2SV_ModStart> = INT_MAX ; for ( i = 0 ; i < MB_MODE_COUNT ; ++ i ) { for ( k = 0 ; k < MAX_REF_FRAMES ; ++ k ) { single_inter_filter [ i ] [ k ] = SWITCHABLE ; single_skippable [ i ] [ k ] = 0 ; } } rd_cost -> rate <S2SV_ModEnd> = INT_MAX ; <S2SV_ModStart> ] ) { assert ( get_ref_frame_buffer <S2SV_ModEnd> ( cpi , <S2SV_ModStart> ( cpi , ref_frame ) != NULL ) ; setup_buffer_inter ( cpi , x , <S2SV_ModEnd> ref_frame , bsize <S2SV_ModStart> ref_frame ) { <S2SV_ModEnd> if ( ! <S2SV_ModStart> ) ) { ref_frame_skip_mask [ 0 ] |= ( 1 << ref_frame ) ; ref_frame_skip_mask [ 1 ] |= SECOND_REF_FRAME_MASK <S2SV_ModEnd> ; } else <S2SV_ModStart> else if ( sf -> <S2SV_ModEnd> reference_masking ) { <S2SV_ModStart> ) { mode_skip_mask [ ref_frame ] |= INTER_NEAREST_NEAR_ZERO <S2SV_ModEnd> ; break ; <S2SV_ModStart> } if ( segfeature_active <S2SV_ModEnd> ( seg , <S2SV_ModStart> SEG_LVL_REF_FRAME ) && get_segdata <S2SV_ModEnd> ( seg , <S2SV_ModStart> ref_frame ) { ref_frame_skip_mask [ 0 ] |= ( 1 << ref_frame ) ; ref_frame_skip_mask [ 1 ] |= SECOND_REF_FRAME_MASK ; } <S2SV_ModEnd> } if ( <S2SV_ModStart> if ( ! segfeature_active <S2SV_ModEnd> ( seg , <S2SV_ModStart> ) ) { ref_frame_skip_mask [ 0 ] = ( 1 << LAST_FRAME ) | ( 1 << GOLDEN_FRAME ) ; ref_frame_skip_mask [ 1 ] = SECOND_REF_FRAME_MASK ; mode_skip_mask [ ALTREF_FRAME ] = ~ INTER_NEAREST_NEAR_ZERO <S2SV_ModEnd> ; if ( <S2SV_ModStart> 0 ) mode_skip_mask [ ALTREF_FRAME ] <S2SV_ModStart> ( 1 << NEARMV <S2SV_ModEnd> ) ; if <S2SV_ModStart> 0 ) mode_skip_mask [ ALTREF_FRAME ] <S2SV_ModStart> ( 1 << NEARESTMV ) ; } } if ( cpi -> rc . is_src_frame_alt_ref ) { if ( sf -> alt_ref_search_fp ) { mode_skip_mask [ ALTREF_FRAME ] = 0 ; ref_frame_skip_mask [ 0 ] = ~ ( 1 << ALTREF_FRAME ) ; ref_frame_skip_mask [ 1 ] = SECOND_REF_FRAME_MASK ; } } if ( sf -> alt_ref_search_fp ) if ( ! cm -> show_frame && x -> pred_mv_sad [ GOLDEN_FRAME ] < INT_MAX ) if ( x -> pred_mv_sad [ ALTREF_FRAME ] > ( x -> pred_mv_sad [ GOLDEN_FRAME ] << 1 ) ) mode_skip_mask [ ALTREF_FRAME ] |= INTER_ALL ; if ( sf -> adaptive_mode_search ) { if ( cm -> show_frame && ! cpi -> rc . is_src_frame_alt_ref && cpi -> rc . frames_since_golden >= 3 ) if ( x -> pred_mv_sad [ GOLDEN_FRAME ] > ( x -> pred_mv_sad [ LAST_FRAME ] << 1 ) ) mode_skip_mask [ GOLDEN_FRAME ] |= INTER_ALL <S2SV_ModEnd> ; } if <S2SV_ModStart> ( bsize > sf -> <S2SV_ModEnd> max_intra_bsize ) { <S2SV_ModStart> max_intra_bsize ) { ref_frame_skip_mask [ 0 ] |= ( 1 << INTRA_FRAME ) ; ref_frame_skip_mask [ 1 ] |= ( 1 << INTRA_FRAME ) ; } mode_skip_mask [ INTRA_FRAME ] |= ~ ( sf -> intra_y_mode_mask [ max_txsize_lookup [ bsize ] ] ) ; for ( i = 0 ; i <= LAST_NEW_MV_INDEX ; ++ i ) mode_threshold [ i ] = 0 ; for ( i = LAST_NEW_MV_INDEX + 1 ; i < MAX_MODES ; ++ i ) mode_threshold [ i ] = ( ( int64_t ) rd_threshes [ i ] * rd_thresh_freq_fact [ i ] ) >> 5 ; midx = sf -> schedule_mode_search ? mode_skip_start : 0 ; while ( midx > 4 ) { uint8_t end_pos = 0 ; for ( i = 5 ; i < midx ; ++ i ) { if ( mode_threshold [ mode_map [ i - 1 ] ] > mode_threshold [ mode_map [ i ] ] ) { uint8_t tmp = mode_map [ i ] ; mode_map [ i ] = mode_map [ i - 1 ] ; mode_map [ i - 1 ] = tmp ; end_pos = i ; } } midx = end_pos ; } for ( midx = 0 ; midx < MAX_MODES ; ++ midx <S2SV_ModEnd> ) { int <S2SV_ModStart> { int mode_index = mode_map [ midx ] ; <S2SV_ModEnd> int mode_excluded = <S2SV_ModStart> = 0 ; <S2SV_ModEnd> int this_skip2 = <S2SV_ModStart> = 0 ; this_mode = vp9_mode_order [ mode_index ] . mode ; ref_frame = vp9_mode_order [ mode_index ] . ref_frame [ 0 ] ; second_ref_frame = vp9_mode_order [ mode_index ] . ref_frame [ 1 ] ; if ( midx == mode_skip_start && best_mode_index >= 0 <S2SV_ModEnd> ) { switch <S2SV_ModStart> { switch ( best_mbmode <S2SV_ModEnd> . ref_frame [ <S2SV_ModStart> case LAST_FRAME : ref_frame_skip_mask [ 0 ] |= LAST_FRAME_MODE_MASK ; ref_frame_skip_mask [ 1 ] |= SECOND_REF_FRAME_MASK <S2SV_ModEnd> ; break ; <S2SV_ModStart> case GOLDEN_FRAME : ref_frame_skip_mask [ 0 ] |= GOLDEN_FRAME_MODE_MASK ; ref_frame_skip_mask [ 1 ] |= SECOND_REF_FRAME_MASK <S2SV_ModEnd> ; break ; <S2SV_ModStart> case ALTREF_FRAME : ref_frame_skip_mask [ 0 ] <S2SV_ModEnd> |= ALT_REF_MODE_MASK ; <S2SV_ModStart> \"Invalid<S2SV_blank>Reference<S2SV_blank>frame\" ) ; break ; } } if ( ( ref_frame_skip_mask [ 0 ] & ( 1 << ref_frame ) ) && ( ref_frame_skip_mask [ 1 ] & ( 1 << MAX ( 0 , second_ref_frame ) ) ) ) continue ; <S2SV_ModEnd> if ( mode_skip_mask <S2SV_ModStart> if ( mode_skip_mask [ ref_frame ] <S2SV_ModStart> ( 1 << this_mode ) ) continue ; if ( best_mode_skippable && sf -> schedule_mode_search ) mode_threshold [ mode_index ] <<= 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( best_rd < mode_threshold <S2SV_ModEnd> [ mode_index ] <S2SV_ModStart> [ mode_index ] ) continue ; if ( sf -> motion_field_mode_search ) { const int mi_width = MIN ( num_8x8_blocks_wide_lookup [ bsize ] , tile_info -> mi_col_end - mi_col ) ; const int mi_height = MIN ( num_8x8_blocks_high_lookup [ bsize ] , tile_info -> mi_row_end - mi_row ) ; const int bsl = mi_width_log2_lookup [ bsize ] ; int cb_partition_search_ctrl = ( ( ( mi_row + mi_col ) >> bsl ) + get_chessboard_index ( cm -> current_video_frame ) ) & 0x1 ; MB_MODE_INFO * ref_mbmi ; int const_motion = 1 ; int skip_ref_frame = ! cb_partition_search_ctrl ; MV_REFERENCE_FRAME rf = NONE ; int_mv ref_mv ; ref_mv . as_int = INVALID_MV ; if ( ( mi_row - 1 ) >= tile_info -> mi_row_start ) { ref_mv = xd -> mi [ - xd -> mi_stride ] -> mbmi . mv [ 0 ] ; rf = xd -> mi [ - xd -> mi_stride ] -> mbmi . ref_frame [ 0 ] ; for ( i = 0 ; i < mi_width ; ++ i ) { ref_mbmi = & xd -> mi [ - xd -> mi_stride + i ] -> mbmi ; const_motion &= ( ref_mv . as_int == ref_mbmi -> mv [ 0 ] . as_int ) && ( ref_frame == ref_mbmi -> ref_frame [ 0 ] ) ; skip_ref_frame &= ( rf == ref_mbmi -> ref_frame [ 0 ] ) ; } } if ( ( mi_col - 1 ) >= tile_info -> mi_col_start ) { if ( ref_mv . as_int == INVALID_MV ) ref_mv = xd -> mi [ - 1 ] -> mbmi . mv [ 0 ] ; if ( rf == NONE ) rf = xd -> mi [ - 1 ] -> mbmi . ref_frame [ 0 ] ; for ( i = 0 ; i < mi_height ; ++ i ) { ref_mbmi = & xd -> mi [ i * xd -> mi_stride - 1 ] -> mbmi ; const_motion &= ( ref_mv . as_int == ref_mbmi -> mv [ 0 ] . as_int ) && ( ref_frame == ref_mbmi -> ref_frame [ 0 ] ) ; skip_ref_frame &= ( rf == ref_mbmi -> ref_frame [ 0 ] ) ; } } if ( skip_ref_frame && this_mode != NEARESTMV && this_mode != NEWMV ) if ( rf > INTRA_FRAME ) if ( ref_frame != rf ) continue ; if ( const_motion ) if ( this_mode == NEARMV || this_mode == ZEROMV <S2SV_ModEnd> ) continue ; <S2SV_ModStart> ) continue ; } <S2SV_ModEnd> comp_pred = second_ref_frame <S2SV_ModStart> { if ( ! cpi -> allow_comp_inter_inter ) continue ; if ( ! ( cpi -> ref_frame_flags & flag_list [ second_ref_frame ] ) ) continue ; if ( segfeature_active ( seg , segment_id , SEG_LVL_REF_FRAME ) ) continue ; if ( <S2SV_ModStart> FLAG_SKIP_COMP_BESTINTRA ) && best_mode_index >= 0 && best_mbmode <S2SV_ModEnd> . ref_frame [ <S2SV_ModStart> ] == INTRA_FRAME <S2SV_ModEnd> ) continue ; <S2SV_ModStart> { if ( sf -> adaptive_mode_search ) if ( ( x -> source_variance << num_pels_log2_lookup [ bsize ] ) > best_pred_sse <S2SV_ModEnd> ) continue ; <S2SV_ModStart> { if ( best_mode_index >= 0 && best_mbmode <S2SV_ModEnd> . ref_frame [ <S2SV_ModStart> } else { const MV_REFERENCE_FRAME ref_frames [ 2 ] = { ref_frame , second_ref_frame } ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> ( cpi , mbmi_ext -> mode_context , frame_mv , this_mode , ref_frames ) ) continue ; } mbmi -> mode = this_mode ; mbmi -> uv_mode = DC_PRED <S2SV_ModEnd> ; mbmi -> <S2SV_ModStart> -> interp_filter ; mbmi -> mv [ 0 ] . as_int = mbmi -> mv [ 1 ] . as_int = 0 ; <S2SV_ModStart> ] ; } <S2SV_ModEnd> if ( ref_frame <S2SV_ModStart> TX_SIZE uv_tx ; struct macroblockd_plane * const pd = & xd -> plane [ 1 ] ; memset ( x -> skip_txfm , 0 , sizeof ( x -> skip_txfm ) ) ; super_block_yrd <S2SV_ModEnd> ( cpi , <S2SV_ModStart> NULL , bsize <S2SV_ModEnd> , best_rd ) <S2SV_ModStart> tx_size , bsize , pd -> subsampling_x , pd -> subsampling_y <S2SV_ModStart> choose_intra_uv_mode ( cpi , x <S2SV_ModStart> = rate_y + cpi <S2SV_ModEnd> -> mbmode_cost [ <S2SV_ModStart> , x , bsize <S2SV_ModEnd> , & rate2 <S2SV_ModStart> rate_y , & rate_uv , <S2SV_ModEnd> & disable_skip , <S2SV_ModStart> & disable_skip , <S2SV_ModEnd> frame_mv , mi_row <S2SV_ModStart> mi_col , single_newmv , single_inter_filter , single_skippable <S2SV_ModStart> total_sse , best_rd , & mask_filter , filter_cache <S2SV_ModStart> disable_skip ) { <S2SV_ModEnd> if ( skippable <S2SV_ModStart> rate_uv ) ; rate2 += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 1 ) ; <S2SV_ModEnd> } else if <S2SV_ModStart> else if ( <S2SV_ModEnd> ref_frame != INTRA_FRAME <S2SV_ModStart> rate_uv ) ; <S2SV_ModEnd> this_skip2 = 1 <S2SV_ModStart> } } else <S2SV_ModEnd> { rate2 += <S2SV_ModStart> ) ; } rd_variance_adjustment ( cpi , x , bsize , & this_rd , ref_frame , x -> source_variance ) ; <S2SV_ModStart> ; } } <S2SV_ModEnd> if ( ! <S2SV_ModStart> , this_rd ) <S2SV_ModEnd> ; } if <S2SV_ModStart> 1 ; } else { best_pred_sse = x -> pred_sse [ ref_frame ] ; } rd_cost -> rate <S2SV_ModEnd> = rate2 ; <S2SV_ModStart> = rate2 ; rd_cost -> dist = distortion2 ; rd_cost -> rdcost = this_rd <S2SV_ModEnd> ; best_rd = <S2SV_ModStart> = this_skip2 ; best_mode_skippable = skippable ; <S2SV_ModStart> ! x -> select_tx_size <S2SV_ModEnd> ) swap_block_ptr ( <S2SV_ModStart> , ctx , 1 , 0 , 0 , <S2SV_ModStart> max_plane ) ; memcpy <S2SV_ModEnd> ( ctx -> <S2SV_ModStart> , sizeof ( ctx -> zcoeff_blk [ 0 ] <S2SV_ModEnd> ) * ctx <S2SV_ModStart> ) ) { <S2SV_ModEnd> int qstep = <S2SV_ModStart> = 4 ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { qstep >>= ( xd -> bd - 8 ) ; } # endif <S2SV_ModStart> SINGLE_REFERENCE ] ) <S2SV_ModEnd> best_pred_rd [ SINGLE_REFERENCE <S2SV_ModStart> = single_rd ; <S2SV_ModEnd> } else { <S2SV_ModStart> COMPOUND_REFERENCE ] ) <S2SV_ModEnd> best_pred_rd [ COMPOUND_REFERENCE <S2SV_ModStart> = single_rd ; <S2SV_ModEnd> } if ( <S2SV_ModStart> int64_t ref = filter_cache <S2SV_ModEnd> [ cm -> <S2SV_ModStart> else if ( filter_cache <S2SV_ModEnd> [ i ] <S2SV_ModStart> ) adj_rd = mask_filter <S2SV_ModEnd> - ref + <S2SV_ModStart> else adj_rd = filter_cache <S2SV_ModEnd> [ i ] <S2SV_ModStart> ) ; } <S2SV_ModEnd> } } if <S2SV_ModStart> } if ( best_mbmode . mode == NEWMV ) { const MV_REFERENCE_FRAME refs [ 2 ] = { best_mbmode . ref_frame [ 0 ] , best_mbmode . ref_frame [ 1 ] } ; int comp_pred_mode = refs [ 1 ] > INTRA_FRAME ; if ( frame_mv [ NEARESTMV ] [ refs [ 0 ] ] . as_int == best_mbmode . mv [ 0 ] . as_int && ( ( comp_pred_mode && frame_mv [ NEARESTMV ] [ refs [ 1 ] ] . as_int == best_mbmode . mv [ 1 ] . as_int ) || ! comp_pred_mode ) ) best_mbmode . mode = NEARESTMV ; else if ( frame_mv [ NEARMV ] [ refs [ 0 ] ] . as_int == best_mbmode . mv [ 0 ] . as_int && ( ( comp_pred_mode && frame_mv [ NEARMV ] [ refs [ 1 ] ] . as_int == best_mbmode . mv [ 1 ] . as_int ) || ! comp_pred_mode ) ) best_mbmode . mode = NEARMV ; else if ( best_mbmode . mv [ 0 ] . as_int == 0 && ( ( comp_pred_mode && best_mbmode . mv [ 1 ] . as_int == 0 ) || ! comp_pred_mode ) ) best_mbmode . mode = ZEROMV ; } if ( best_mode_index < 0 || <S2SV_ModStart> >= best_rd_so_far ) { rd_cost -> rate = INT_MAX ; rd_cost -> rdcost = INT64_MAX ; return ; } if ( sf -> <S2SV_ModEnd> use_uv_intra_rd_estimate ) { <S2SV_ModStart> { if ( best_mbmode <S2SV_ModEnd> . ref_frame [ <S2SV_ModStart> get_uv_tx_size ( mbmi , & xd -> plane [ 1 ] <S2SV_ModStart> ; if ( ! cpi -> rc . is_src_frame_alt_ref ) vp9_update_rd_thresh_fact ( tile_data -> thresh_freq_fact , sf -> adaptive_rd_thresh , bsize , best_mode_index ) ; <S2SV_ModEnd> * mbmi = <S2SV_ModStart> 0 ) ; } else { vp9_zero ( best_filter_diff ) ; } x -> skip |= best_mode_skippable ; if ( ! x -> skip && ! x -> select_tx_size ) { int has_high_freq_coeff = 0 ; int plane ; int max_plane = is_inter_block ( & xd -> mi [ 0 ] -> mbmi ) ? MAX_MB_PLANE : 1 ; for ( plane = 0 ; plane < max_plane ; ++ plane ) { x -> plane [ plane ] . eobs = ctx -> eobs_pbuf [ plane ] [ 1 ] ; has_high_freq_coeff |= vp9_has_high_freq_in_plane ( x , bsize , plane ) ; } for ( plane = max_plane ; plane < MAX_MB_PLANE ; ++ plane ) { x -> plane [ plane ] . eobs = ctx -> eobs_pbuf [ plane ] [ 2 ] ; has_high_freq_coeff |= vp9_has_high_freq_in_plane ( x , bsize , plane ) ; } best_mode_skippable |= ! has_high_freq_coeff ; } assert ( best_mode_index >= 0 ) ; store_coding_context ( x , ctx , best_mode_index , best_pred_diff , best_filter_diff , best_mode_skippable ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15472\n\n```\nCWE-125 void ndpi_search_h323 ( struct ndpi_detection_module_struct * ndpi_struct , struct ndpi_flow_struct * flow ) { struct ndpi_packet_struct * packet = & flow -> packet ; u_int16_t dport = 0 , sport = 0 ; NDPI_LOG_DBG ( ndpi_struct , \"search<S2SV_blank>H323\\\\n\" ) ; if ( ( packet -> tcp != NULL ) && ( packet -> tcp -> dest != ntohs ( 102 ) ) ) { NDPI_LOG_DBG2 ( ndpi_struct , \"calculated<S2SV_blank>dport<S2SV_blank>over<S2SV_blank>tcp\\\\n\" ) ; if ( packet -> payload_packet_len >= 4 && ( packet -> payload [ 0 ] == 0x03 ) && ( packet -> payload [ 1 ] == 0x00 ) ) { struct tpkt * t = ( struct tpkt * ) packet -> payload ; u_int16_t len = ntohs ( t -> len ) ; if ( packet -> payload_packet_len == len ) { if ( packet -> payload [ 4 ] == ( packet -> payload_packet_len - sizeof ( struct tpkt ) - 1 ) ) { if ( ( packet -> payload [ 5 ] == 0xE0 ) || ( packet -> payload [ 5 ] == 0xD0 ) ) { NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>RDP\\\\n\" ) ; ndpi_set_detected_protocol ( ndpi_struct , flow , NDPI_PROTOCOL_RDP , NDPI_PROTOCOL_UNKNOWN ) ; return ; } } flow -> l4 . tcp . h323_valid_packets ++ ; if ( flow -> l4 . tcp . h323_valid_packets >= 2 ) { NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>H323<S2SV_blank>broadcast\\\\n\" ) ; ndpi_set_detected_protocol ( ndpi_struct , flow , NDPI_PROTOCOL_H323 , NDPI_PROTOCOL_UNKNOWN ) ; } } else { NDPI_EXCLUDE_PROTO ( ndpi_struct , flow ) ; return ; } } } else if ( packet -> udp != NULL ) { sport = ntohs ( packet -> udp -> source ) , dport = ntohs ( packet -> udp -> dest ) ; NDPI_LOG_DBG2 ( ndpi_struct , \"calculated<S2SV_blank>dport<S2SV_blank>over<S2SV_blank>udp\\\\n\" ) ; if ( packet -> payload_packet_len >= 6 && packet -> payload [ 0 ] == 0x80 && packet -> payload [ 1 ] == 0x08 && ( packet -> payload [ 2 ] == 0xe7 || packet -> payload [ 2 ] == 0x26 ) && packet -> payload [ 4 ] == 0x00 && packet -> payload [ 5 ] == 0x00 ) { NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>H323<S2SV_blank>broadcast\\\\n\" ) ; ndpi_set_detected_protocol ( ndpi_struct , flow , NDPI_PROTOCOL_H323 , NDPI_PROTOCOL_UNKNOWN ) ; return ; } if ( sport == 1719 || dport == 1719 ) <S2SV_StartBug> { <S2SV_EndBug> <S2SV_StartBug> if ( packet -> payload [ 0 ] == 0x16 && packet -> payload [ 1 ] == 0x80 && packet -> payload [ 4 ] == 0x06 && packet -> payload [ 5 ] == 0x00 ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>H323<S2SV_blank>broadcast\\\\n\" ) ; ndpi_set_detected_protocol ( ndpi_struct , flow , NDPI_PROTOCOL_H323 , NDPI_PROTOCOL_UNKNOWN ) ; return ; } else if ( packet -> payload_packet_len >= 20 && packet -> payload_packet_len <= 117 ) { NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>H323<S2SV_blank>broadcast\\\\n\" ) ; ndpi_set_detected_protocol ( ndpi_struct , flow , NDPI_PROTOCOL_H323 , NDPI_PROTOCOL_UNKNOWN ) ; return ; } else { NDPI_EXCLUDE_PROTO ( ndpi_struct , flow ) ; return ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 1719 ) { if ( ( packet -> payload_packet_len >= 5 ) && <S2SV_ModEnd> ( packet -> <S2SV_ModStart> ] == 0x16 ) && ( <S2SV_ModEnd> packet -> payload <S2SV_ModStart> ] == 0x80 ) && ( <S2SV_ModEnd> packet -> payload <S2SV_ModStart> ] == 0x06 ) && ( <S2SV_ModEnd> packet -> payload <S2SV_ModStart> == 0x00 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9888\n\n```\nCWE-476 static GsfInfileTar * tar_directory_for_file ( GsfInfileTar * dir , const char * name , gboolean last ) { const char * s = name ; while ( 1 ) { const char * s0 = s ; char * dirname ; while ( 1 ) { if ( * s == 0 ) { if ( last && s != s0 ) break ; else return dir ; } if ( * s == '/' ) break ; s ++ ; } dirname = g_strndup ( s0 , s - s0 ) ; while ( * s == '/' ) s ++ ; if ( strcmp ( dirname , \".\" ) != 0 ) { GsfInput * subdir = gsf_infile_child_by_name ( GSF_INFILE ( dir ) , dirname ) ; if ( subdir ) { <S2SV_StartBug> g_object_unref ( subdir ) ; <S2SV_EndBug> <S2SV_StartBug> dir = GSF_INFILE_TAR ( subdir ) ; <S2SV_EndBug> } else dir = tar_create_dir ( dir , dirname ) ; } g_free ( dirname ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> subdir ) { dir = GSF_IS_INFILE_TAR ( subdir ) ? GSF_INFILE_TAR ( subdir ) : dir ; <S2SV_ModStart> subdir ) ; <S2SV_ModEnd> } else dir\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9436\n\n```\nCWE-20 struct parsed_tag * parse_tag ( char * * s , int internal ) { struct parsed_tag * tag = NULL ; int tag_id ; char tagname [ MAX_TAG_LEN ] , attrname [ MAX_TAG_LEN ] ; char * p , * q ; <S2SV_StartBug> int i , attr_id = 0 , nattr ; <S2SV_EndBug> q = ( * s ) + 1 ; p = tagname ; if ( * q == '/' ) { * ( p ++ ) = * ( q ++ ) ; SKIP_BLANKS ( q ) ; } while ( * q && ! IS_SPACE ( * q ) && ! ( tagname [ 0 ] != '/' && * q == '/' ) && * q != '>' && p - tagname < MAX_TAG_LEN - 1 ) { * ( p ++ ) = TOLOWER ( * q ) ; q ++ ; } * p = '\\\\0' ; while ( * q && ! IS_SPACE ( * q ) && ! ( tagname [ 0 ] != '/' && * q == '/' ) && * q != '>' ) q ++ ; tag_id = getHash_si ( & tagtable , tagname , HTML_UNKNOWN ) ; if ( tag_id == HTML_UNKNOWN || ( ! internal && TagMAP [ tag_id ] . flag & TFLG_INT ) ) goto skip_parse_tagarg ; tag = New ( struct parsed_tag ) ; bzero ( tag , sizeof ( struct parsed_tag ) ) ; tag -> tagid = tag_id ; if ( ( nattr = TagMAP [ tag_id ] . max_attribute ) > 0 ) { tag -> attrid = NewAtom_N ( unsigned char , nattr ) ; tag -> value = New_N ( char * , nattr ) ; tag -> map = NewAtom_N ( unsigned char , MAX_TAGATTR ) ; memset ( tag -> map , MAX_TAGATTR , MAX_TAGATTR ) ; memset ( tag -> attrid , ATTR_UNKNOWN , nattr ) ; for ( i = 0 ; i < nattr ; i ++ ) tag -> map [ TagMAP [ tag_id ] . accept_attribute [ i ] ] = i ; } SKIP_BLANKS ( q ) ; while ( 1 ) { Str value = NULL , value_tmp = NULL ; if ( * q == '>' || * q == '\\\\0' ) goto done_parse_tag ; p = attrname ; while ( * q && * q != '=' && ! IS_SPACE ( * q ) && * q != '>' && p - attrname < MAX_TAG_LEN - 1 ) { * ( p ++ ) = TOLOWER ( * q ) ; q ++ ; } * p = '\\\\0' ; while ( * q && * q != '=' && ! IS_SPACE ( * q ) && * q != '>' ) q ++ ; SKIP_BLANKS ( q ) ; if ( * q == '=' ) { value_tmp = Strnew ( ) ; q ++ ; SKIP_BLANKS ( q ) ; if ( * q == \\'\"\\' ) { q ++ ; while ( * q && * q != \\'\"\\' ) { Strcat_char ( value_tmp , * q ) ; if ( ! tag -> need_reconstruct && is_html_quote ( * q ) ) tag -> need_reconstruct = TRUE ; q ++ ; } if ( * q == \\'\"\\' ) q ++ ; } else if ( * q == '\\\\'' ) { q ++ ; while ( * q && * q != '\\\\'' ) { Strcat_char ( value_tmp , * q ) ; if ( ! tag -> need_reconstruct && is_html_quote ( * q ) ) tag -> need_reconstruct = TRUE ; q ++ ; } if ( * q == '\\\\'' ) q ++ ; } else if ( * q ) { while ( * q && ! IS_SPACE ( * q ) && * q != '>' ) { Strcat_char ( value_tmp , * q ) ; if ( ! tag -> need_reconstruct && is_html_quote ( * q ) ) tag -> need_reconstruct = TRUE ; q ++ ; } } } for ( i = 0 ; i < nattr ; i ++ ) { if ( ( tag ) -> attrid [ i ] == ATTR_UNKNOWN && strcmp ( AttrMAP [ TagMAP [ tag_id ] . accept_attribute [ i ] ] . name , attrname ) == 0 ) { attr_id = TagMAP [ tag_id ] . accept_attribute [ i ] ; break ; } } if ( value_tmp ) { int j , hidden = FALSE ; for ( j = 0 ; j < i ; j ++ ) { if ( tag -> attrid [ j ] == ATTR_TYPE && tag -> value [ j ] && strcmp ( \"hidden\" , tag -> value [ j ] ) == 0 ) { hidden = TRUE ; break ; } } if ( ( tag_id == HTML_INPUT || tag_id == HTML_INPUT_ALT ) && attr_id == ATTR_VALUE && hidden ) { value = value_tmp ; } else { char * x ; value = Strnew ( ) ; for ( x = value_tmp -> ptr ; * x ; x ++ ) { if ( * x != '\\\\n' ) Strcat_char ( value , * x ) ; } } } if ( i != nattr ) { if ( ! internal && ( ( AttrMAP [ attr_id ] . flag & AFLG_INT ) || ( value && AttrMAP [ attr_id ] . vtype == VTYPE_METHOD && ! strcasecmp ( value -> ptr , \"internal\" ) ) ) ) { tag -> need_reconstruct = TRUE ; continue ; } tag -> attrid [ i ] = attr_id ; if ( value ) tag -> value [ i ] = html_unquote ( value -> ptr ) ; else tag -> value [ i ] = NULL ; } else { tag -> need_reconstruct = TRUE ; } } skip_parse_tagarg : while ( * q != '>' && * q ) q ++ ; done_parse_tag : if ( * q == '>' ) q ++ ; * s = q ; return tag ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 , nattr ; tagname [ 0 ] = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1583\n\n```\nCWE-119 static inline void schedule_debug ( struct task_struct * prev ) { # ifdef CONFIG_SCHED_STACK_END_CHECK <S2SV_StartBug> BUG_ON ( task_stack_end_corrupted ( prev ) ) ; <S2SV_EndBug> # endif if ( unlikely ( in_atomic_preempt_off ( ) ) ) { __schedule_bug ( prev ) ; preempt_count_set ( PREEMPT_DISABLED ) ; } rcu_sleep_check ( ) ; profile_hit ( SCHED_PROFILING , __builtin_return_address ( 0 ) ) ; schedstat_inc ( this_rq ( ) , sched_count ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> # ifdef CONFIG_SCHED_STACK_END_CHECK if <S2SV_ModEnd> ( task_stack_end_corrupted ( <S2SV_ModStart> ( prev ) ) panic ( \"corrupted<S2SV_blank>stack<S2SV_blank>end<S2SV_blank>detected<S2SV_blank>inside<S2SV_blank>scheduler\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5206\n\n```\nCWE-269 static int do_remount ( struct path * path , int flags , int mnt_flags , void * data ) { int err ; struct super_block * sb = path -> mnt -> mnt_sb ; struct mount * mnt = real_mount ( path -> mnt ) ; if ( ! check_mnt ( mnt ) ) return - EINVAL ; if ( path -> dentry != path -> mnt -> mnt_root ) return - EINVAL ; err = security_sb_remount ( sb , data ) ; if ( err ) return err ; down_write ( & sb -> s_umount ) ; if ( flags & MS_BIND ) err = change_mount_flags ( path -> mnt , flags ) ; else if ( ! capable ( CAP_SYS_ADMIN ) ) err = - EPERM ; else err = do_remount_sb ( sb , flags , data , 0 ) ; if ( ! err ) { lock_mount_hash ( ) ; <S2SV_StartBug> mnt_flags |= mnt -> mnt . mnt_flags & MNT_PROPAGATION_MASK ; <S2SV_EndBug> mnt -> mnt . mnt_flags = mnt_flags ; touch_mnt_namespace ( mnt -> mnt_ns ) ; unlock_mount_hash ( ) ; } up_write ( & sb -> s_umount ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . mnt_flags & ~ MNT_USER_SETTABLE_MASK <S2SV_ModEnd> ; mnt ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3179\n\n```\nCWE-388 void processRequest ( struct reqelem * req ) { ssize_t n ; unsigned int l , m ; unsigned char buf [ 2048 ] ; const unsigned char * p ; int type ; struct device * d = devlist ; unsigned char rbuf [ 4096 ] ; unsigned char * rp = rbuf + 1 ; unsigned char nrep = 0 ; time_t t ; struct service * newserv = NULL ; struct service * serv ; n = read ( req -> socket , buf , sizeof ( buf ) ) ; if ( n < 0 ) { if ( errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK ) return ; syslog ( LOG_ERR , \"(s=%d)<S2SV_blank>processRequest():<S2SV_blank>read():<S2SV_blank>%m\" , req -> socket ) ; goto error ; } if ( n == 0 ) { syslog ( LOG_INFO , \"(s=%d)<S2SV_blank>request<S2SV_blank>connection<S2SV_blank>closed\" , req -> socket ) ; goto error ; } t = time ( NULL ) ; type = buf [ 0 ] ; p = buf + 1 ; DECODELENGTH_CHECKLIMIT ( l , p , buf + n ) ; if ( p + l > buf + n ) { syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length<S2SV_blank>encoding)\" ) ; goto error ; } if ( l == 0 && type != 3 ) { syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length=0)\" ) ; goto error ; } syslog ( LOG_INFO , \"(s=%d)<S2SV_blank>request<S2SV_blank>type=%d<S2SV_blank>str=\\'%.*s\\'\" , req -> socket , type , l , p ) ; switch ( type ) { case 1 : case 2 : case 3 : while ( d && ( nrep < 255 ) ) { if ( d -> t < t ) { syslog ( LOG_INFO , \"outdated<S2SV_blank>device\" ) ; } else { if ( d -> headers [ HEADER_LOCATION ] . l + d -> headers [ HEADER_NT ] . l + d -> headers [ HEADER_USN ] . l + 6 + ( rp - rbuf ) >= ( int ) sizeof ( rbuf ) ) break ; if ( ( type == 1 && 0 == memcmp ( d -> headers [ HEADER_NT ] . p , p , l ) ) || ( type == 2 && 0 == memcmp ( d -> headers [ HEADER_USN ] . p , p , l ) ) || ( type == 3 ) ) { m = d -> headers [ HEADER_LOCATION ] . l ; CODELENGTH ( m , rp ) ; memcpy ( rp , d -> headers [ HEADER_LOCATION ] . p , d -> headers [ HEADER_LOCATION ] . l ) ; rp += d -> headers [ HEADER_LOCATION ] . l ; m = d -> headers [ HEADER_NT ] . l ; CODELENGTH ( m , rp ) ; memcpy ( rp , d -> headers [ HEADER_NT ] . p , d -> headers [ HEADER_NT ] . l ) ; rp += d -> headers [ HEADER_NT ] . l ; m = d -> headers [ HEADER_USN ] . l ; CODELENGTH ( m , rp ) ; memcpy ( rp , d -> headers [ HEADER_USN ] . p , d -> headers [ HEADER_USN ] . l ) ; rp += d -> headers [ HEADER_USN ] . l ; nrep ++ ; } } d = d -> next ; } for ( serv = servicelisthead . lh_first ; serv && ( nrep < 255 ) ; serv = serv -> entries . le_next ) { if ( strlen ( serv -> location ) + strlen ( serv -> st ) + strlen ( serv -> usn ) + 6 + ( rp - rbuf ) >= sizeof ( rbuf ) ) break ; if ( ( type == 1 && 0 == strncmp ( serv -> st , ( const char * ) p , l ) ) || ( type == 2 && 0 == strncmp ( serv -> usn , ( const char * ) p , l ) ) || ( type == 3 ) ) { m = strlen ( serv -> location ) ; CODELENGTH ( m , rp ) ; memcpy ( rp , serv -> location , m ) ; rp += m ; m = strlen ( serv -> st ) ; CODELENGTH ( m , rp ) ; memcpy ( rp , serv -> st , m ) ; rp += m ; m = strlen ( serv -> usn ) ; CODELENGTH ( m , rp ) ; memcpy ( rp , serv -> usn , m ) ; rp += m ; nrep ++ ; } } rbuf [ 0 ] = nrep ; syslog ( LOG_DEBUG , \"(s=%d)<S2SV_blank>response<S2SV_blank>:<S2SV_blank>%d<S2SV_blank>device%s\" , req -> socket , nrep , ( nrep > 1 ) ? \"s\" : \"\" ) ; if ( write ( req -> socket , rbuf , rp - rbuf ) < 0 ) { syslog ( LOG_ERR , \"(s=%d)<S2SV_blank>write:<S2SV_blank>%m\" , req -> socket ) ; goto error ; } break ; case 4 : newserv = malloc ( sizeof ( struct service ) ) ; if ( ! newserv ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } <S2SV_StartBug> if ( containsForbiddenChars ( p , l ) ) { <S2SV_EndBug> syslog ( LOG_ERR , \"bad<S2SV_blank>request<S2SV_blank>(st<S2SV_blank>contains<S2SV_blank>forbidden<S2SV_blank>chars)\" ) ; goto error ; } newserv -> st = malloc ( l + 1 ) ; if ( ! newserv -> st ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memcpy ( newserv -> st , p , l ) ; newserv -> st [ l ] = '\\\\0' ; p += l ; if ( p >= buf + n ) { syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(missing<S2SV_blank>usn)\" ) ; goto error ; } DECODELENGTH_CHECKLIMIT ( l , p , buf + n ) ; if ( p + l > buf + n ) { syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length<S2SV_blank>encoding)\" ) ; goto error ; } if ( containsForbiddenChars ( p , l ) ) { syslog ( LOG_ERR , \"bad<S2SV_blank>request<S2SV_blank>(usn<S2SV_blank>contains<S2SV_blank>forbidden<S2SV_blank>chars)\" ) ; goto error ; } syslog ( LOG_INFO , \"usn=\\'%.*s\\'\" , l , p ) ; newserv -> usn = malloc ( l + 1 ) ; if ( ! newserv -> usn ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memcpy ( newserv -> usn , p , l ) ; newserv -> usn [ l ] = '\\\\0' ; p += l ; DECODELENGTH_CHECKLIMIT ( l , p , buf + n ) ; if ( p + l > buf + n ) { syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length<S2SV_blank>encoding)\" ) ; goto error ; } if ( containsForbiddenChars ( p , l ) ) { syslog ( LOG_ERR , \"bad<S2SV_blank>request<S2SV_blank>(server<S2SV_blank>contains<S2SV_blank>forbidden<S2SV_blank>chars)\" ) ; goto error ; } syslog ( LOG_INFO , \"server=\\'%.*s\\'\" , l , p ) ; newserv -> server = malloc ( l + 1 ) ; if ( ! newserv -> server ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memcpy ( newserv -> server , p , l ) ; newserv -> server [ l ] = '\\\\0' ; p += l ; DECODELENGTH_CHECKLIMIT ( l , p , buf + n ) ; if ( p + l > buf + n ) { syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length<S2SV_blank>encoding)\" ) ; goto error ; } if ( containsForbiddenChars ( p , l ) ) { syslog ( LOG_ERR , \"bad<S2SV_blank>request<S2SV_blank>(location<S2SV_blank>contains<S2SV_blank>forbidden<S2SV_blank>chars)\" ) ; goto error ; } syslog ( LOG_INFO , \"location=\\'%.*s\\'\" , l , p ) ; newserv -> location = malloc ( l + 1 ) ; if ( ! newserv -> location ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memcpy ( newserv -> location , p , l ) ; newserv -> location [ l ] = '\\\\0' ; for ( serv = servicelisthead . lh_first ; serv ; serv = serv -> entries . le_next ) { if ( 0 == strcmp ( newserv -> usn , serv -> usn ) && 0 == strcmp ( newserv -> st , serv -> st ) ) { syslog ( LOG_INFO , \"Service<S2SV_blank>allready<S2SV_blank>in<S2SV_blank>the<S2SV_blank>list.<S2SV_blank>Updating...\" ) ; free ( newserv -> st ) ; free ( newserv -> usn ) ; free ( serv -> server ) ; serv -> server = newserv -> server ; free ( serv -> location ) ; serv -> location = newserv -> location ; free ( newserv ) ; newserv = NULL ; return ; } } LIST_INSERT_HEAD ( & servicelisthead , newserv , entries ) ; newserv = NULL ; break ; default : syslog ( LOG_WARNING , \"Unknown<S2SV_blank>request<S2SV_blank>type<S2SV_blank>%d\" , type ) ; rbuf [ 0 ] = '\\\\0' ; if ( write ( req -> socket , rbuf , 1 ) < 0 ) { syslog ( LOG_ERR , \"(s=%d)<S2SV_blank>write:<S2SV_blank>%m\" , req -> socket ) ; goto error ; } } return ; error : if ( newserv ) { free ( newserv -> st ) ; free ( newserv -> usn ) ; free ( newserv -> server ) ; free ( newserv -> location ) ; free ( newserv ) ; newserv = NULL ; } close ( req -> socket ) ; req -> socket = - 1 ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error ; } memset ( newserv , 0 , sizeof ( struct service ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_write_data ( SCSIRequest * req ) { SCSIDiskReq * r = DO_UPCAST ( SCSIDiskReq , req , req ) ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; uint32_t n ; assert ( r -> req . aiocb == NULL ) ; if ( r -> req . cmd . mode != SCSI_XFER_TO_DEV ) { DPRINTF ( \"Data<S2SV_blank>transfer<S2SV_blank>direction<S2SV_blank>invalid\\\\n\" ) ; scsi_write_complete ( r , - EINVAL ) ; return ; } <S2SV_StartBug> n = r -> iov . iov_len / 512 ; <S2SV_EndBug> if ( n ) { if ( s -> tray_open ) { scsi_write_complete ( r , - ENOMEDIUM ) ; } <S2SV_StartBug> qemu_iovec_init_external ( & r -> qiov , & r -> iov , 1 ) ; <S2SV_EndBug> bdrv_acct_start ( s -> bs , & r -> acct , n * BDRV_SECTOR_SIZE , BDRV_ACCT_WRITE ) ; r -> req . aiocb = bdrv_aio_writev ( s -> bs , r -> sector , & r -> qiov , n , scsi_write_complete , r ) ; if ( r -> req . aiocb == NULL ) { scsi_write_complete ( r , - ENOMEM ) ; } } else { scsi_write_complete ( r , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = r -> qiov . size <S2SV_ModEnd> / 512 ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> bdrv_acct_start ( s\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0376\n\n```\nCWE-617 static int connection_edge_process_relay_cell ( cell_t * cell , circuit_t * circ , edge_connection_t * conn , crypt_path_t * layer_hint ) { static int num_seen = 0 ; relay_header_t rh ; unsigned domain = layer_hint ? LD_APP : LD_EXIT ; int reason ; int optimistic_data = 0 ; tor_assert ( cell ) ; tor_assert ( circ ) ; relay_header_unpack ( & rh , cell -> payload ) ; num_seen ++ ; log_debug ( domain , \"Now<S2SV_blank>seen<S2SV_blank>%d<S2SV_blank>relay<S2SV_blank>cells<S2SV_blank>here<S2SV_blank>(command<S2SV_blank>%d,<S2SV_blank>stream<S2SV_blank>%d).\" , num_seen , rh . command , rh . stream_id ) ; if ( rh . length > RELAY_PAYLOAD_SIZE ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Relay<S2SV_blank>cell<S2SV_blank>length<S2SV_blank>field<S2SV_blank>too<S2SV_blank>long.<S2SV_blank>Closing<S2SV_blank>circuit.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } if ( rh . stream_id == 0 ) { switch ( rh . command ) { case RELAY_COMMAND_BEGIN : case RELAY_COMMAND_CONNECTED : case RELAY_COMMAND_DATA : case RELAY_COMMAND_END : case RELAY_COMMAND_RESOLVE : case RELAY_COMMAND_RESOLVED : case RELAY_COMMAND_BEGIN_DIR : log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Relay<S2SV_blank>command<S2SV_blank>%d<S2SV_blank>with<S2SV_blank>zero<S2SV_blank>\" \"stream_id.<S2SV_blank>Dropping.\" , ( int ) rh . command ) ; return 0 ; default : ; } } if ( conn && ! connection_state_is_open ( TO_CONN ( conn ) ) ) { if ( conn -> base_ . type == CONN_TYPE_EXIT && ( conn -> base_ . state == EXIT_CONN_STATE_CONNECTING || conn -> base_ . state == EXIT_CONN_STATE_RESOLVING ) && rh . command == RELAY_COMMAND_DATA ) { optimistic_data = 1 ; } else { return connection_edge_process_relay_cell_not_open ( & rh , cell , circ , conn , layer_hint ) ; } } switch ( rh . command ) { case RELAY_COMMAND_DROP : return 0 ; case RELAY_COMMAND_BEGIN : case RELAY_COMMAND_BEGIN_DIR : if ( layer_hint && circ -> purpose != CIRCUIT_PURPOSE_S_REND_JOINED ) { log_fn ( LOG_PROTOCOL_WARN , LD_APP , \"Relay<S2SV_blank>begin<S2SV_blank>request<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>AP.<S2SV_blank>Dropping.\" ) ; return 0 ; } if ( circ -> purpose == CIRCUIT_PURPOSE_S_REND_JOINED && layer_hint != TO_ORIGIN_CIRCUIT ( circ ) -> cpath -> prev ) { log_fn ( LOG_PROTOCOL_WARN , LD_APP , \"Relay<S2SV_blank>begin<S2SV_blank>request<S2SV_blank>to<S2SV_blank>Hidden<S2SV_blank>Service<S2SV_blank>\" \"from<S2SV_blank>intermediary<S2SV_blank>node.<S2SV_blank>Dropping.\" ) ; return 0 ; } if ( conn ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"Begin<S2SV_blank>cell<S2SV_blank>for<S2SV_blank>known<S2SV_blank>stream.<S2SV_blank>Dropping.\" ) ; return 0 ; } <S2SV_StartBug> if ( rh . command == RELAY_COMMAND_BEGIN_DIR ) { <S2SV_EndBug> static uint64_t next_id = 0 ; circ -> dirreq_id = ++ next_id ; TO_OR_CIRCUIT ( circ ) -> p_chan -> dirreq_id = circ -> dirreq_id ; } return connection_exit_begin_conn ( cell , circ ) ; case RELAY_COMMAND_DATA : ++ stats_n_data_cells_received ; if ( ( layer_hint && -- layer_hint -> deliver_window < 0 ) || ( ! layer_hint && -- circ -> deliver_window < 0 ) ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"(relay<S2SV_blank>data)<S2SV_blank>circ<S2SV_blank>deliver_window<S2SV_blank>below<S2SV_blank>0.<S2SV_blank>Killing.\" ) ; if ( conn ) { connection_edge_end ( conn , END_STREAM_REASON_TORPROTOCOL ) ; connection_mark_for_close ( TO_CONN ( conn ) ) ; } return - END_CIRC_REASON_TORPROTOCOL ; } log_debug ( domain , \"circ<S2SV_blank>deliver_window<S2SV_blank>now<S2SV_blank>%d.\" , layer_hint ? layer_hint -> deliver_window : circ -> deliver_window ) ; circuit_consider_sending_sendme ( circ , layer_hint ) ; if ( ! conn ) { log_info ( domain , \"data<S2SV_blank>cell<S2SV_blank>dropped,<S2SV_blank>unknown<S2SV_blank>stream<S2SV_blank>(streamid<S2SV_blank>%d).\" , rh . stream_id ) ; return 0 ; } if ( -- conn -> deliver_window < 0 ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"(relay<S2SV_blank>data)<S2SV_blank>conn<S2SV_blank>deliver_window<S2SV_blank>below<S2SV_blank>0.<S2SV_blank>Killing.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } stats_n_data_bytes_received += rh . length ; connection_write_to_buf ( ( char * ) ( cell -> payload + RELAY_HEADER_SIZE ) , rh . length , TO_CONN ( conn ) ) ; if ( ! optimistic_data ) { connection_edge_consider_sending_sendme ( conn ) ; } return 0 ; case RELAY_COMMAND_END : reason = rh . length > 0 ? get_uint8 ( cell -> payload + RELAY_HEADER_SIZE ) : END_STREAM_REASON_MISC ; if ( ! conn ) { log_info ( domain , \"end<S2SV_blank>cell<S2SV_blank>(%s)<S2SV_blank>dropped,<S2SV_blank>unknown<S2SV_blank>stream.\" , stream_end_reason_to_string ( reason ) ) ; return 0 ; } log_info ( domain , TOR_SOCKET_T_FORMAT \":<S2SV_blank>end<S2SV_blank>cell<S2SV_blank>(%s)<S2SV_blank>for<S2SV_blank>stream<S2SV_blank>%d.<S2SV_blank>\" \"Removing<S2SV_blank>stream.\" , conn -> base_ . s , stream_end_reason_to_string ( reason ) , conn -> stream_id ) ; if ( conn -> base_ . type == CONN_TYPE_AP ) { entry_connection_t * entry_conn = EDGE_TO_ENTRY_CONN ( conn ) ; if ( entry_conn -> socks_request && ! entry_conn -> socks_request -> has_finished ) log_warn ( LD_BUG , \"open<S2SV_blank>stream<S2SV_blank>hasn\\'t<S2SV_blank>sent<S2SV_blank>socks<S2SV_blank>answer<S2SV_blank>yet?<S2SV_blank>Closing.\" ) ; } conn -> edge_has_sent_end = 1 ; if ( ! conn -> end_reason ) conn -> end_reason = reason | END_STREAM_REASON_FLAG_REMOTE ; if ( ! conn -> base_ . marked_for_close ) { connection_mark_and_flush ( TO_CONN ( conn ) ) ; } return 0 ; case RELAY_COMMAND_EXTEND : case RELAY_COMMAND_EXTEND2 : { static uint64_t total_n_extend = 0 , total_nonearly = 0 ; total_n_extend ++ ; if ( rh . stream_id ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"\\'extend\\'<S2SV_blank>cell<S2SV_blank>received<S2SV_blank>for<S2SV_blank>non-zero<S2SV_blank>stream.<S2SV_blank>Dropping.\" ) ; return 0 ; } if ( cell -> command != CELL_RELAY_EARLY && ! networkstatus_get_param ( NULL , \"AllowNonearlyExtend\" , 0 , 0 , 1 ) ) { # define EARLY_WARNING_INTERVAL 3600 static ratelim_t early_warning_limit = RATELIM_INIT ( EARLY_WARNING_INTERVAL ) ; char * m ; if ( cell -> command == CELL_RELAY ) { ++ total_nonearly ; if ( ( m = rate_limit_log ( & early_warning_limit , approx_time ( ) ) ) ) { double percentage = ( ( double ) total_nonearly ) / total_n_extend ; percentage *= 100 ; log_fn ( LOG_PROTOCOL_WARN , domain , \"EXTEND<S2SV_blank>cell<S2SV_blank>received,<S2SV_blank>\" \"but<S2SV_blank>not<S2SV_blank>via<S2SV_blank>RELAY_EARLY.<S2SV_blank>Dropping.%s\" , m ) ; log_fn ( LOG_PROTOCOL_WARN , domain , \"<S2SV_blank><S2SV_blank>(We<S2SV_blank>have<S2SV_blank>dropped<S2SV_blank>%.02f%%<S2SV_blank>of<S2SV_blank>\" \"all<S2SV_blank>EXTEND<S2SV_blank>cells<S2SV_blank>for<S2SV_blank>this<S2SV_blank>reason)\" , percentage ) ; tor_free ( m ) ; } } else { log_fn ( LOG_WARN , domain , \"EXTEND<S2SV_blank>cell<S2SV_blank>received,<S2SV_blank>in<S2SV_blank>a<S2SV_blank>cell<S2SV_blank>with<S2SV_blank>type<S2SV_blank>%d!<S2SV_blank>Dropping.\" , cell -> command ) ; } return 0 ; } return circuit_extend ( cell , circ ) ; } case RELAY_COMMAND_EXTENDED : case RELAY_COMMAND_EXTENDED2 : if ( ! layer_hint ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"\\'extended\\'<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>non-origin.<S2SV_blank>Dropping.\" ) ; return 0 ; } log_debug ( domain , \"Got<S2SV_blank>an<S2SV_blank>extended<S2SV_blank>cell!<S2SV_blank>Yay.\" ) ; { extended_cell_t extended_cell ; if ( extended_cell_parse ( & extended_cell , rh . command , ( const uint8_t * ) cell -> payload + RELAY_HEADER_SIZE , rh . length ) < 0 ) { log_warn ( LD_PROTOCOL , \"Can\\'t<S2SV_blank>parse<S2SV_blank>EXTENDED<S2SV_blank>cell;<S2SV_blank>killing<S2SV_blank>circuit.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } if ( ( reason = circuit_finish_handshake ( TO_ORIGIN_CIRCUIT ( circ ) , & extended_cell . created_cell ) ) < 0 ) { log_warn ( domain , \"circuit_finish_handshake<S2SV_blank>failed.\" ) ; return reason ; } } if ( ( reason = circuit_send_next_onion_skin ( TO_ORIGIN_CIRCUIT ( circ ) ) ) < 0 ) { log_info ( domain , \"circuit_send_next_onion_skin()<S2SV_blank>failed.\" ) ; return reason ; } return 0 ; case RELAY_COMMAND_TRUNCATE : if ( layer_hint ) { log_fn ( LOG_PROTOCOL_WARN , LD_APP , \"\\'truncate\\'<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>origin.<S2SV_blank>Dropping.\" ) ; return 0 ; } if ( circ -> n_hop ) { if ( circ -> n_chan ) log_warn ( LD_BUG , \"n_chan<S2SV_blank>and<S2SV_blank>n_hop<S2SV_blank>set<S2SV_blank>on<S2SV_blank>the<S2SV_blank>same<S2SV_blank>circuit!\" ) ; extend_info_free ( circ -> n_hop ) ; circ -> n_hop = NULL ; tor_free ( circ -> n_chan_create_cell ) ; circuit_set_state ( circ , CIRCUIT_STATE_OPEN ) ; } if ( circ -> n_chan ) { uint8_t trunc_reason = get_uint8 ( cell -> payload + RELAY_HEADER_SIZE ) ; circuit_clear_cell_queue ( circ , circ -> n_chan ) ; channel_send_destroy ( circ -> n_circ_id , circ -> n_chan , trunc_reason ) ; circuit_set_n_circid_chan ( circ , 0 , NULL ) ; } log_debug ( LD_EXIT , \"Processed<S2SV_blank>\\'truncate\\',<S2SV_blank>replying.\" ) ; { char payload [ 1 ] ; payload [ 0 ] = ( char ) END_CIRC_REASON_REQUESTED ; relay_send_command_from_edge ( 0 , circ , RELAY_COMMAND_TRUNCATED , payload , sizeof ( payload ) , NULL ) ; } return 0 ; case RELAY_COMMAND_TRUNCATED : if ( ! layer_hint ) { log_fn ( LOG_PROTOCOL_WARN , LD_EXIT , \"\\'truncated\\'<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>non-origin.<S2SV_blank>Dropping.\" ) ; return 0 ; } circuit_truncated ( TO_ORIGIN_CIRCUIT ( circ ) , layer_hint , get_uint8 ( cell -> payload + RELAY_HEADER_SIZE ) ) ; return 0 ; case RELAY_COMMAND_CONNECTED : if ( conn ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"\\'connected\\'<S2SV_blank>unsupported<S2SV_blank>while<S2SV_blank>open.<S2SV_blank>Closing<S2SV_blank>circ.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } log_info ( domain , \"\\'connected\\'<S2SV_blank>received,<S2SV_blank>no<S2SV_blank>conn<S2SV_blank>attached<S2SV_blank>anymore.<S2SV_blank>Ignoring.\" ) ; return 0 ; case RELAY_COMMAND_SENDME : if ( ! rh . stream_id ) { if ( layer_hint ) { if ( layer_hint -> package_window + CIRCWINDOW_INCREMENT > CIRCWINDOW_START_MAX ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Unexpected<S2SV_blank>sendme<S2SV_blank>cell<S2SV_blank>from<S2SV_blank>exit<S2SV_blank>relay.<S2SV_blank>\" \"Closing<S2SV_blank>circ.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } layer_hint -> package_window += CIRCWINDOW_INCREMENT ; log_debug ( LD_APP , \"circ-level<S2SV_blank>sendme<S2SV_blank>at<S2SV_blank>origin,<S2SV_blank>packagewindow<S2SV_blank>%d.\" , layer_hint -> package_window ) ; circuit_resume_edge_reading ( circ , layer_hint ) ; } else { if ( circ -> package_window + CIRCWINDOW_INCREMENT > CIRCWINDOW_START_MAX ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Unexpected<S2SV_blank>sendme<S2SV_blank>cell<S2SV_blank>from<S2SV_blank>client.<S2SV_blank>\" \"Closing<S2SV_blank>circ<S2SV_blank>(window<S2SV_blank>%d).\" , circ -> package_window ) ; return - END_CIRC_REASON_TORPROTOCOL ; } circ -> package_window += CIRCWINDOW_INCREMENT ; log_debug ( LD_APP , \"circ-level<S2SV_blank>sendme<S2SV_blank>at<S2SV_blank>non-origin,<S2SV_blank>packagewindow<S2SV_blank>%d.\" , circ -> package_window ) ; circuit_resume_edge_reading ( circ , layer_hint ) ; } return 0 ; } if ( ! conn ) { log_info ( domain , \"sendme<S2SV_blank>cell<S2SV_blank>dropped,<S2SV_blank>unknown<S2SV_blank>stream<S2SV_blank>(streamid<S2SV_blank>%d).\" , rh . stream_id ) ; return 0 ; } conn -> package_window += STREAMWINDOW_INCREMENT ; log_debug ( domain , \"stream-level<S2SV_blank>sendme,<S2SV_blank>packagewindow<S2SV_blank>now<S2SV_blank>%d.\" , conn -> package_window ) ; if ( circuit_queue_streams_are_blocked ( circ ) ) { return 0 ; } connection_start_reading ( TO_CONN ( conn ) ) ; if ( connection_edge_package_raw_inbuf ( conn , 1 , NULL ) < 0 ) { connection_mark_for_close ( TO_CONN ( conn ) ) ; return 0 ; } return 0 ; case RELAY_COMMAND_RESOLVE : if ( layer_hint ) { log_fn ( LOG_PROTOCOL_WARN , LD_APP , \"resolve<S2SV_blank>request<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>AP;<S2SV_blank>dropping.\" ) ; return 0 ; } else if ( conn ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"resolve<S2SV_blank>request<S2SV_blank>for<S2SV_blank>known<S2SV_blank>stream;<S2SV_blank>dropping.\" ) ; return 0 ; } else if ( circ -> purpose != CIRCUIT_PURPOSE_OR ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"resolve<S2SV_blank>request<S2SV_blank>on<S2SV_blank>circ<S2SV_blank>with<S2SV_blank>purpose<S2SV_blank>%d;<S2SV_blank>dropping\" , circ -> purpose ) ; return 0 ; } connection_exit_begin_resolve ( cell , TO_OR_CIRCUIT ( circ ) ) ; return 0 ; case RELAY_COMMAND_RESOLVED : if ( conn ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"\\'resolved\\'<S2SV_blank>unsupported<S2SV_blank>while<S2SV_blank>open.<S2SV_blank>Closing<S2SV_blank>circ.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } log_info ( domain , \"\\'resolved\\'<S2SV_blank>received,<S2SV_blank>no<S2SV_blank>conn<S2SV_blank>attached<S2SV_blank>anymore.<S2SV_blank>Ignoring.\" ) ; return 0 ; case RELAY_COMMAND_ESTABLISH_INTRO : case RELAY_COMMAND_ESTABLISH_RENDEZVOUS : case RELAY_COMMAND_INTRODUCE1 : case RELAY_COMMAND_INTRODUCE2 : case RELAY_COMMAND_INTRODUCE_ACK : case RELAY_COMMAND_RENDEZVOUS1 : case RELAY_COMMAND_RENDEZVOUS2 : case RELAY_COMMAND_INTRO_ESTABLISHED : case RELAY_COMMAND_RENDEZVOUS_ESTABLISHED : rend_process_relay_cell ( circ , layer_hint , rh . command , rh . length , cell -> payload + RELAY_HEADER_SIZE ) ; return 0 ; } log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Received<S2SV_blank>unknown<S2SV_blank>relay<S2SV_blank>command<S2SV_blank>%d.<S2SV_blank>Perhaps<S2SV_blank>the<S2SV_blank>other<S2SV_blank>side<S2SV_blank>is<S2SV_blank>using<S2SV_blank>\" \"a<S2SV_blank>newer<S2SV_blank>version<S2SV_blank>of<S2SV_blank>Tor?<S2SV_blank>Dropping.\" , rh . command ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> command == RELAY_COMMAND_BEGIN_DIR && circ -> purpose != CIRCUIT_PURPOSE_S_REND_JOINED\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-3844\n\n```\nCWE-120 void gtkui_conf_read ( void ) { FILE * fd ; const char * path ; char line [ 100 ] , name [ 30 ] ; short value ; # ifdef OS_WINDOWS path = ec_win_get_user_dir ( ) ; # else <S2SV_StartBug> path = g_get_tmp_dir ( ) ; <S2SV_EndBug> # endif filename = g_build_filename ( path , \".ettercap_gtk\" , NULL ) ; DEBUG_MSG ( \"gtkui_conf_read:<S2SV_blank>%s\" , filename ) ; fd = fopen ( filename , \"r\" ) ; if ( ! fd ) return ; while ( fgets ( line , 100 , fd ) ) { sscanf ( line , \"%s<S2SV_blank>=<S2SV_blank>%hd\" , name , & value ) ; gtkui_conf_set ( name , value ) ; } fclose ( fd ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> else path = g_get_home_dir <S2SV_ModEnd> ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static PyObject * decode_bytes_with_escapes ( struct compiling * c , const node * n , const char * s , size_t len ) { <S2SV_StartBug> return PyBytes_DecodeEscape ( s , len , NULL , 0 , NULL ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) { const char * first_invalid_escape ; PyObject * result = _PyBytes_DecodeEscape <S2SV_ModEnd> ( s , <S2SV_ModStart> 0 , NULL , & first_invalid_escape ) ; if ( result == NULL ) return NULL ; if ( first_invalid_escape != NULL ) { if ( warn_invalid_escape_sequence ( c , n , * first_invalid_escape ) < 0 ) { Py_DECREF ( result ) ; return NULL ; } } return result <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13194\n\n```\nCWE-20 static vpx_image_t * img_alloc_helper ( vpx_image_t * img , vpx_img_fmt_t fmt , unsigned int d_w , unsigned int d_h , unsigned int buf_align , unsigned int stride_align , unsigned char * img_data ) { unsigned int h , w , s , xcs , ycs , bps ; unsigned int stride_in_bytes ; int align ; if ( ! buf_align ) buf_align = 1 ; if ( buf_align & ( buf_align - 1 ) ) goto fail ; if ( ! stride_align ) stride_align = 1 ; if ( stride_align & ( stride_align - 1 ) ) goto fail ; switch ( fmt ) { case VPX_IMG_FMT_RGB32 : case VPX_IMG_FMT_RGB32_LE : case VPX_IMG_FMT_ARGB : case VPX_IMG_FMT_ARGB_LE : bps = 32 ; break ; case VPX_IMG_FMT_RGB24 : case VPX_IMG_FMT_BGR24 : bps = 24 ; break ; case VPX_IMG_FMT_RGB565 : case VPX_IMG_FMT_RGB565_LE : case VPX_IMG_FMT_RGB555 : case VPX_IMG_FMT_RGB555_LE : case VPX_IMG_FMT_UYVY : case VPX_IMG_FMT_YUY2 : case VPX_IMG_FMT_YVYU : bps = 16 ; break ; case VPX_IMG_FMT_I420 : case VPX_IMG_FMT_YV12 : case VPX_IMG_FMT_VPXI420 : case VPX_IMG_FMT_VPXYV12 : bps = 12 ; break ; case VPX_IMG_FMT_I422 : case VPX_IMG_FMT_I440 : bps = 16 ; break ; case VPX_IMG_FMT_I444 : bps = 24 ; break ; case VPX_IMG_FMT_I42016 : bps = 24 ; break ; case VPX_IMG_FMT_I42216 : case VPX_IMG_FMT_I44016 : bps = 32 ; break ; case VPX_IMG_FMT_I44416 : bps = 48 ; break ; default : bps = 16 ; break ; } switch ( fmt ) { case VPX_IMG_FMT_I420 : case VPX_IMG_FMT_YV12 : case VPX_IMG_FMT_VPXI420 : case VPX_IMG_FMT_VPXYV12 : case VPX_IMG_FMT_I422 : case VPX_IMG_FMT_I42016 : case VPX_IMG_FMT_I42216 : xcs = 1 ; break ; default : xcs = 0 ; break ; } switch ( fmt ) { case VPX_IMG_FMT_I420 : case VPX_IMG_FMT_I440 : case VPX_IMG_FMT_YV12 : case VPX_IMG_FMT_VPXI420 : case VPX_IMG_FMT_VPXYV12 : case VPX_IMG_FMT_I42016 : case VPX_IMG_FMT_I44016 : ycs = 1 ; break ; default : ycs = 0 ; break ; } <S2SV_StartBug> align = ( 1 << xcs ) - 1 ; <S2SV_EndBug> w = ( d_w + align ) & ~ align ; align = ( 1 << ycs ) - 1 ; h = ( d_h + align ) & ~ align ; s = ( fmt & VPX_IMG_FMT_PLANAR ) ? w : bps * w / 8 ; s = ( s + stride_align - 1 ) & ~ ( stride_align - 1 ) ; stride_in_bytes = ( fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? s * 2 : s ; <S2SV_StartBug> if ( ! img ) { <S2SV_EndBug> img = ( vpx_image_t * ) calloc ( 1 , sizeof ( vpx_image_t ) ) ; if ( ! img ) goto fail ; img -> self_allocd = 1 ; } else { memset ( img , 0 , sizeof ( vpx_image_t ) ) ; } img -> img_data = img_data ; if ( ! img_data ) { const uint64_t alloc_size = ( fmt & VPX_IMG_FMT_PLANAR ) ? ( uint64_t ) h * s * bps / 8 : ( uint64_t ) h * s ; if ( alloc_size != ( size_t ) alloc_size ) goto fail ; img -> img_data = ( uint8_t * ) vpx_memalign ( buf_align , ( size_t ) alloc_size ) ; img -> img_data_owner = 1 ; } if ( ! img -> img_data ) goto fail ; img -> fmt = fmt ; img -> bit_depth = ( fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? 16 : 8 ; img -> w = w ; img -> h = h ; img -> x_chroma_shift = xcs ; img -> y_chroma_shift = ycs ; img -> bps = bps ; img -> stride [ VPX_PLANE_Y ] = img -> stride [ VPX_PLANE_ALPHA ] = stride_in_bytes ; img -> stride [ VPX_PLANE_U ] = img -> stride [ VPX_PLANE_V ] = stride_in_bytes >> xcs ; if ( ! vpx_img_set_rect ( img , 0 , 0 , d_w , d_h ) ) return img ; fail : vpx_img_free ( img ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } w = d_w ; h = d_h ; s = ( fmt & VPX_IMG_FMT_PLANAR ) ? w : bps * w / 8 ; s = ( s + stride_align - 1 ) & ~ ( stride_align - 1 ) ; stride_in_bytes = ( fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? s * 2 : s ; if ( ! img ) { img = ( vpx_image_t * ) calloc ( 1 , sizeof ( vpx_image_t ) ) ; if ( ! img ) goto fail ; img -> self_allocd = 1 ; } else { memset ( img , 0 , sizeof ( vpx_image_t ) ) ; } img -> img_data = img_data ; if ( ! img_data ) { uint64_t alloc_size ; <S2SV_ModStart> : s ; <S2SV_ModEnd> alloc_size = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int vp8_rdcost_mby ( MACROBLOCK * mb ) { int cost = 0 ; int b ; MACROBLOCKD * x = & mb -> e_mbd ; ENTROPY_CONTEXT_PLANES t_above , t_left ; ENTROPY_CONTEXT * ta ; ENTROPY_CONTEXT * tl ; <S2SV_StartBug> vpx_memcpy ( & t_above , mb -> e_mbd . above_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & t_left , mb -> e_mbd . left_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> ta = ( ENTROPY_CONTEXT * ) & t_above ; tl = ( ENTROPY_CONTEXT * ) & t_left ; for ( b = 0 ; b < 16 ; b ++ ) cost += cost_coeffs ( mb , x -> block + b , PLANE_TYPE_Y_NO_DC , ta + vp8_block2above [ b ] , tl + vp8_block2left [ b ] ) ; cost += cost_coeffs ( mb , x -> block + 24 , PLANE_TYPE_Y2 , ta + vp8_block2above [ 24 ] , tl + vp8_block2left [ 24 ] ) ; return cost ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tl ; memcpy <S2SV_ModEnd> ( & t_above <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & t_left\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 static int ExecuteSQL ( SQLHDBC hDbc , char * szSQL , char cDelimiter , int bColumnNames , int bHTMLTable ) { SQLHSTMT hStmt ; SQLTCHAR szSepLine [ 32001 ] ; SQLTCHAR szUcSQL [ 32001 ] ; SQLSMALLINT cols ; SQLINTEGER ret ; SQLLEN nRows = 0 ; szSepLine [ 0 ] = 0 ; ansi_to_unicode ( szSQL , szUcSQL ) ; if ( SQLAllocStmt ( hDbc , & hStmt ) != SQL_SUCCESS ) { if ( bVerbose ) DumpODBCLog ( hEnv , hDbc , 0 ) ; fprintf ( stderr , \"[ISQL]ERROR:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>SQLAllocStmt\\\\n\" ) ; return 0 ; } if ( buseED ) { ret = SQLExecDirect ( hStmt , szUcSQL , SQL_NTS ) ; if ( ret == SQL_NO_DATA ) { fprintf ( stderr , \"[ISQL]INFO:<S2SV_blank>SQLExecDirect<S2SV_blank>returned<S2SV_blank>SQL_NO_DATA\\\\n\" ) ; } else if ( ret == SQL_SUCCESS_WITH_INFO ) { if ( bVerbose ) DumpODBCLog ( hEnv , hDbc , hStmt ) ; fprintf ( stderr , \"[ISQL]INFO:<S2SV_blank>SQLExecDirect<S2SV_blank>returned<S2SV_blank>SQL_SUCCESS_WITH_INFO\\\\n\" ) ; } else if ( ret != SQL_SUCCESS ) { if ( bVerbose ) DumpODBCLog ( hEnv , hDbc , hStmt ) ; fprintf ( stderr , \"[ISQL]ERROR:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>SQLExecDirect\\\\n\" ) ; SQLFreeStmt ( hStmt , SQL_DROP ) ; <S2SV_StartBug> free ( szSepLine ) ; <S2SV_EndBug> return 0 ; } } else { if ( SQLPrepare ( hStmt , szUcSQL , SQL_NTS ) != SQL_SUCCESS ) { if ( bVerbose ) DumpODBCLog ( hEnv , hDbc , hStmt ) ; fprintf ( stderr , \"[ISQL]ERROR:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>SQLPrepare\\\\n\" ) ; SQLFreeStmt ( hStmt , SQL_DROP ) ; return 0 ; } ret = SQLExecute ( hStmt ) ; if ( ret == SQL_NO_DATA ) { fprintf ( stderr , \"[ISQL]INFO:<S2SV_blank>SQLExecute<S2SV_blank>returned<S2SV_blank>SQL_NO_DATA\\\\n\" ) ; } else if ( ret == SQL_SUCCESS_WITH_INFO ) { if ( bVerbose ) DumpODBCLog ( hEnv , hDbc , hStmt ) ; fprintf ( stderr , \"[ISQL]INFO:<S2SV_blank>SQLExecute<S2SV_blank>returned<S2SV_blank>SQL_SUCCESS_WITH_INFO\\\\n\" ) ; } else if ( ret != SQL_SUCCESS ) { if ( bVerbose ) DumpODBCLog ( hEnv , hDbc , hStmt ) ; fprintf ( stderr , \"[ISQL]ERROR:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>SQLExecute\\\\n\" ) ; SQLFreeStmt ( hStmt , SQL_DROP ) ; return 0 ; } } do { if ( SQLNumResultCols ( hStmt , & cols ) != SQL_SUCCESS ) { if ( bVerbose ) DumpODBCLog ( hEnv , hDbc , hStmt ) ; fprintf ( stderr , \"[ISQL]ERROR:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>SQLNumResultCols\\\\n\" ) ; SQLFreeStmt ( hStmt , SQL_DROP ) ; return 0 ; } if ( cols > 0 ) { if ( bHTMLTable ) WriteHeaderHTMLTable ( hStmt ) ; else if ( cDelimiter == 0 ) UWriteHeaderNormal ( hStmt , szSepLine ) ; else if ( cDelimiter && bColumnNames ) WriteHeaderDelimited ( hStmt , cDelimiter ) ; if ( bHTMLTable ) WriteBodyHTMLTable ( hStmt ) ; else if ( cDelimiter == 0 ) nRows = WriteBodyNormal ( hStmt ) ; else WriteBodyDelimited ( hStmt , cDelimiter ) ; } if ( bHTMLTable ) WriteFooterHTMLTable ( hStmt ) ; else if ( cDelimiter == 0 ) UWriteFooterNormal ( hStmt , szSepLine , nRows ) ; } while ( SQL_SUCCEEDED ( SQLMoreResults ( hStmt ) ) ) ; SQLFreeStmt ( hStmt , SQL_DROP ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SQL_DROP ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14064\n\n```\nCWE-119 static VALUE cState_space_before_set ( VALUE self , VALUE space_before ) { unsigned long len ; GET_STATE ( self ) ; Check_Type ( space_before , T_STRING ) ; len = RSTRING_LEN ( space_before ) ; if ( len == 0 ) { if ( state -> space_before ) { ruby_xfree ( state -> space_before ) ; state -> space_before = NULL ; state -> space_before_len = 0 ; } } else { if ( state -> space_before ) ruby_xfree ( state -> space_before ) ; <S2SV_StartBug> state -> space_before = strdup ( RSTRING_PTR ( space_before ) ) ; <S2SV_EndBug> state -> space_before_len = len ; } return Qnil ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> space_before = fstrndup <S2SV_ModEnd> ( RSTRING_PTR ( <S2SV_ModStart> ( space_before ) , len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 struct file * get_empty_filp ( void ) { const struct cred * cred = current_cred ( ) ; static long old_max ; struct file * f ; int error ; if ( get_nr_files ( ) >= files_stat . max_files && ! capable ( CAP_SYS_ADMIN ) ) { if ( percpu_counter_sum_positive ( & nr_files ) >= files_stat . max_files ) goto over ; } f = kmem_cache_zalloc ( filp_cachep , GFP_KERNEL ) ; if ( unlikely ( ! f ) ) return ERR_PTR ( - ENOMEM ) ; percpu_counter_inc ( & nr_files ) ; f -> f_cred = get_cred ( cred ) ; error = security_file_alloc ( f ) ; if ( unlikely ( error ) ) { file_free ( f ) ; return ERR_PTR ( error ) ; } <S2SV_StartBug> INIT_LIST_HEAD ( & f -> f_u . fu_list ) ; <S2SV_EndBug> atomic_long_set ( & f -> f_count , 1 ) ; rwlock_init ( & f -> f_owner . lock ) ; spin_lock_init ( & f -> f_lock ) ; eventpoll_init_file ( f ) ; return f ; over : if ( get_nr_files ( ) > old_max ) { pr_info ( \"VFS:<S2SV_blank>file-max<S2SV_blank>limit<S2SV_blank>%lu<S2SV_blank>reached\\\\n\" , get_max_files ( ) ) ; old_max = get_nr_files ( ) ; } return ERR_PTR ( - ENFILE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } <S2SV_ModEnd> atomic_long_set ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 static int snd_ctl_elem_user_put ( struct snd_kcontrol * kcontrol , struct snd_ctl_elem_value * ucontrol ) { int change ; <S2SV_StartBug> struct user_element * ue = kcontrol -> private_data ; <S2SV_EndBug> change = memcmp ( & ucontrol -> value , ue -> elem_data , ue -> elem_data_size ) != 0 ; if ( change ) memcpy ( ue -> elem_data , & ucontrol -> value , ue -> elem_data_size ) ; <S2SV_StartBug> return change ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> kcontrol -> private_data ; mutex_lock ( & ue -> card -> user_ctl_lock ) <S2SV_ModStart> elem_data_size ) ; mutex_unlock ( & ue -> card -> user_ctl_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5545\n\n```\nCWE-125 int main ( int argc , char * argv [ ] ) { FILE * iplist = NULL ; plist_t root_node = NULL ; char * plist_out = NULL ; uint32_t size = 0 ; int read_size = 0 ; char * plist_entire = NULL ; struct stat filestats ; options_t * options = parse_arguments ( argc , argv ) ; if ( ! options ) { print_usage ( argc , argv ) ; return 0 ; } iplist = fopen ( options -> in_file , \"rb\" ) ; if ( ! iplist ) { free ( options ) ; return 1 ; } <S2SV_StartBug> stat ( options -> in_file , & filestats ) ; <S2SV_EndBug> plist_entire = ( char * ) malloc ( sizeof ( char ) * ( filestats . st_size + 1 ) ) ; read_size = fread ( plist_entire , sizeof ( char ) , filestats . st_size , iplist ) ; fclose ( iplist ) ; if ( memcmp ( plist_entire , \"bplist00\" , 8 ) == 0 ) { plist_from_bin ( plist_entire , read_size , & root_node ) ; plist_to_xml ( root_node , & plist_out , & size ) ; } else { plist_from_xml ( plist_entire , read_size , & root_node ) ; plist_to_bin ( root_node , & plist_out , & size ) ; } plist_free ( root_node ) ; free ( plist_entire ) ; if ( plist_out ) { if ( options -> out_file != NULL ) { FILE * oplist = fopen ( options -> out_file , \"wb\" ) ; if ( ! oplist ) { free ( options ) ; return 1 ; } fwrite ( plist_out , size , sizeof ( char ) , oplist ) ; fclose ( oplist ) ; } else fwrite ( plist_out , size , sizeof ( char ) , stdout ) ; free ( plist_out ) ; } else printf ( \"ERROR:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>input<S2SV_blank>file.\\\\n\" ) ; free ( options ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filestats ) ; if ( filestats . st_size < 8 ) { printf ( \"ERROR:<S2SV_blank>Input<S2SV_blank>file<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>to<S2SV_blank>contain<S2SV_blank>valid<S2SV_blank>plist<S2SV_blank>data.\\\\n\" ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2596\n\n```\nCWE-189 static int fb_mmap ( struct file * file , struct vm_area_struct * vma ) { struct fb_info * info = file_fb_info ( file ) ; struct fb_ops * fb ; <S2SV_StartBug> unsigned long off ; <S2SV_EndBug> unsigned long start ; u32 len ; if ( ! info ) return - ENODEV ; <S2SV_StartBug> if ( vma -> vm_pgoff > ( ~ 0UL >> PAGE_SHIFT ) ) <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> off = vma -> vm_pgoff << PAGE_SHIFT ; <S2SV_EndBug> fb = info -> fbops ; if ( ! fb ) return - ENODEV ; mutex_lock ( & info -> mm_lock ) ; <S2SV_StartBug> if ( fb -> fb_mmap ) { <S2SV_EndBug> int res ; res = fb -> fb_mmap ( info , vma ) ; mutex_unlock ( & info -> mm_lock ) ; return res ; } start = info -> fix . smem_start ; len = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + info -> fix . smem_len ) ; if ( off >= len ) { off -= len ; if ( info -> var . accel_flags ) { mutex_unlock ( & info -> mm_lock ) ; return - EINVAL ; } start = info -> fix . mmio_start ; len = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + info -> fix . mmio_len ) ; } mutex_unlock ( & info -> mm_lock ) ; start &= PAGE_MASK ; if ( ( vma -> vm_end - vma -> vm_start + off ) > len ) return - EINVAL ; off += start ; vma -> vm_pgoff = off >> PAGE_SHIFT ; vma -> vm_page_prot = vm_get_page_prot ( vma -> vm_flags ) ; <S2SV_StartBug> fb_pgprotect ( file , vma , off ) ; <S2SV_EndBug> if ( io_remap_pfn_range ( vma , vma -> vm_start , off >> PAGE_SHIFT , vma -> vm_end - vma -> vm_start , vma -> vm_page_prot ) ) return - EAGAIN ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned long mmio_pgoff <S2SV_ModEnd> ; unsigned long <S2SV_ModStart> - ENODEV ; fb = info -> fbops ; if ( ! fb ) return - ENODEV ; mutex_lock ( & info -> mm_lock ) ; if ( fb -> fb_mmap ) { int res ; res = fb -> fb_mmap ( info , vma ) ; mutex_unlock ( & info -> mm_lock ) ; return res ; } start = info -> fix . smem_start ; len = info -> fix . smem_len ; mmio_pgoff = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + len ) >> PAGE_SHIFT ; if ( <S2SV_ModEnd> vma -> vm_pgoff <S2SV_ModStart> vma -> vm_pgoff >= mmio_pgoff ) { vma -> vm_pgoff -= mmio_pgoff ; start = info -> fix . mmio_start ; len = info -> fix . mmio_len ; } mutex_unlock <S2SV_ModEnd> ( & info <S2SV_ModStart> mm_lock ) ; <S2SV_ModEnd> vma -> vm_page_prot <S2SV_ModStart> , vma , start ) ; return vm_iomap_memory ( vma , start , len ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_mod ( void * _o ) { mod_ty o = ( mod_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { Py_RETURN_NONE ; } switch ( o -> kind ) { case Module_kind : result = PyType_GenericNew ( Module_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Module . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case Interactive_kind : result = PyType_GenericNew ( Interactive_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Interactive . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Expression_kind : result = PyType_GenericNew ( Expression_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Expression . body ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; <S2SV_StartBug> case Suite_kind : <S2SV_EndBug> result = PyType_GenericNew ( Suite_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Suite . body , ast2obj_stmt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; } return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) ; value = ast2obj_list ( o -> v . Module . type_ignores , ast2obj_type_ignore ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_ignores , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; <S2SV_ModStart> break ; case FunctionType_kind : result = PyType_GenericNew ( FunctionType_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . FunctionType . argtypes , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_argtypes , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . FunctionType . returns ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_returns , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15032\n\n```\nCWE-772 static Image * ReadYCBCRImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { const unsigned char * pixels ; Image * canvas_image , * image ; MagickBooleanType status ; MagickOffsetType scene ; QuantumInfo * quantum_info ; QuantumType quantum_type ; register const Quantum * p ; register ssize_t i , x ; register Quantum * q ; size_t length ; ssize_t count , y ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( OptionError , \"MustSpecifyImageSize\" ) ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; SetImageColorspace ( image , YCbCrColorspace , exception ) ; if ( image_info -> interlace != PartitionInterlace ) { status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( DiscardBlobBytes ( image , image -> offset ) == MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } canvas_image = CloneImage ( image , image -> extract_info . width , 1 , MagickFalse , exception ) ; ( void ) SetImageVirtualPixelMethod ( canvas_image , BlackVirtualPixelMethod , exception ) ; quantum_info = AcquireQuantumInfo ( image_info , canvas_image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; quantum_type = RGBQuantum ; if ( LocaleCompare ( image_info -> magick , \"YCbCrA\" ) == 0 ) { quantum_type = RGBAQuantum ; image -> alpha_trait = BlendPixelTrait ; } pixels = ( const unsigned char * ) NULL ; if ( image_info -> number_scenes != 0 ) while ( image -> scene < image_info -> scene ) { image -> scene ++ ; length = GetQuantumExtent ( canvas_image , quantum_info , quantum_type ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; if ( count != ( ssize_t ) length ) break ; } } count = 0 ; length = 0 ; scene = 0 ; do { if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) { <S2SV_StartBug> quantum_info = DestroyQuantumInfo ( quantum_info ) ; <S2SV_EndBug> return ( DestroyImageList ( image ) ) ; } SetImageColorspace ( image , YCbCrColorspace , exception ) ; switch ( image_info -> interlace ) { case NoInterlace : default : { if ( scene == 0 ) { length = GetQuantumExtent ( canvas_image , quantum_info , quantum_type ) ; pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = QueueAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , GetPixelRed ( canvas_image , p ) , q ) ; SetPixelGreen ( image , GetPixelGreen ( canvas_image , p ) , q ) ; SetPixelBlue ( image , GetPixelBlue ( canvas_image , p ) , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , GetPixelAlpha ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } break ; } case LineInterlace : { static QuantumType quantum_types [ 4 ] = { RedQuantum , GreenQuantum , BlueQuantum , OpacityQuantum } ; if ( scene == 0 ) { length = GetQuantumExtent ( canvas_image , quantum_info , RedQuantum ) ; pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { for ( i = 0 ; i < ( image -> alpha_trait != UndefinedPixelTrait ? 4 : 3 ) ; i ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } quantum_type = quantum_types [ i ] ; q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( quantum_type ) { case RedQuantum : { SetPixelRed ( image , GetPixelRed ( canvas_image , p ) , q ) ; break ; } case GreenQuantum : { SetPixelGreen ( image , GetPixelGreen ( canvas_image , p ) , q ) ; break ; } case BlueQuantum : { SetPixelBlue ( image , GetPixelBlue ( canvas_image , p ) , q ) ; break ; } case OpacityQuantum : { SetPixelAlpha ( image , GetPixelAlpha ( canvas_image , p ) , q ) ; break ; } default : break ; } p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case PlaneInterlace : { if ( scene == 0 ) { length = GetQuantumExtent ( canvas_image , quantum_info , RedQuantum ) ; pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , RedQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , GetPixelRed ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 1 , 5 ) ; if ( status == MagickFalse ) break ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , GreenQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelGreen ( image , GetPixelGreen ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 2 , 5 ) ; if ( status == MagickFalse ) break ; } for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , BlueQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( image , GetPixelBlue ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 3 , 5 ) ; if ( status == MagickFalse ) break ; } if ( image -> alpha_trait != UndefinedPixelTrait ) { for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , AlphaQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelAlpha ( image , GetPixelAlpha ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 4 , 5 ) ; if ( status == MagickFalse ) break ; } } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 5 , 5 ) ; if ( status == MagickFalse ) break ; } break ; } case PartitionInterlace : { AppendImageFormat ( \"Y\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { canvas_image = DestroyImageList ( canvas_image ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( DiscardBlobBytes ( image , image -> offset ) == MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; length = GetQuantumExtent ( canvas_image , quantum_info , RedQuantum ) ; for ( i = 0 ; i < ( ssize_t ) scene ; i ++ ) for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , RedQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , GetPixelRed ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 1 , 5 ) ; if ( status == MagickFalse ) break ; } ( void ) CloseBlob ( image ) ; AppendImageFormat ( \"Cb\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { canvas_image = DestroyImageList ( canvas_image ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = GetQuantumExtent ( canvas_image , quantum_info , GreenQuantum ) ; for ( i = 0 ; i < ( ssize_t ) scene ; i ++ ) for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , GreenQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelGreen ( image , GetPixelGreen ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 2 , 5 ) ; if ( status == MagickFalse ) break ; } ( void ) CloseBlob ( image ) ; AppendImageFormat ( \"Cr\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { canvas_image = DestroyImageList ( canvas_image ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = GetQuantumExtent ( canvas_image , quantum_info , BlueQuantum ) ; for ( i = 0 ; i < ( ssize_t ) scene ; i ++ ) for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , BlueQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( image , GetPixelBlue ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 3 , 5 ) ; if ( status == MagickFalse ) break ; } if ( image -> alpha_trait != UndefinedPixelTrait ) { ( void ) CloseBlob ( image ) ; AppendImageFormat ( \"A\" , image -> filename ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { canvas_image = DestroyImageList ( canvas_image ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = GetQuantumExtent ( canvas_image , quantum_info , AlphaQuantum ) ; for ( i = 0 ; i < ( ssize_t ) scene ; i ++ ) for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; for ( y = 0 ; y < ( ssize_t ) image -> extract_info . height ; y ++ ) { if ( count != ( ssize_t ) length ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } q = GetAuthenticPixels ( canvas_image , 0 , 0 , canvas_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; length = ImportQuantumPixels ( canvas_image , ( CacheView * ) NULL , quantum_info , BlueQuantum , pixels , exception ) ; if ( SyncAuthenticPixels ( canvas_image , exception ) == MagickFalse ) break ; if ( ( ( y - image -> extract_info . y ) >= 0 ) && ( ( y - image -> extract_info . y ) < ( ssize_t ) image -> rows ) ) { p = GetVirtualPixels ( canvas_image , canvas_image -> extract_info . x , 0 , canvas_image -> columns , 1 , exception ) ; q = GetAuthenticPixels ( image , 0 , y - image -> extract_info . y , image -> columns , 1 , exception ) ; if ( ( p == ( const Quantum * ) NULL ) || ( q == ( Quantum * ) NULL ) ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelAlpha ( image , GetPixelAlpha ( canvas_image , p ) , q ) ; p += GetPixelChannels ( canvas_image ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 4 , 5 ) ; if ( status == MagickFalse ) break ; } } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , 5 , 5 ) ; if ( status == MagickFalse ) break ; } break ; } } SetQuantumImageType ( image , quantum_type ) ; if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( count == ( ssize_t ) length ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } scene ++ ; } while ( count == ( ssize_t ) length ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; canvas_image = DestroyImage ( canvas_image ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> DestroyQuantumInfo ( quantum_info ) ; canvas_image = DestroyImage ( canvas_image\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10200\n\n```\nCWE-264 static int l2tp_ip_bind ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; struct sockaddr_l2tpip * addr = ( struct sockaddr_l2tpip * ) uaddr ; struct net * net = sock_net ( sk ) ; int ret ; int chk_addr_ret ; <S2SV_StartBug> if ( ! sock_flag ( sk , SOCK_ZAPPED ) ) <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> if ( addr_len < sizeof ( struct sockaddr_l2tpip ) ) <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> if ( addr -> l2tp_family != AF_INET ) <S2SV_EndBug> return - EINVAL ; ret = - EADDRINUSE ; read_lock_bh ( & l2tp_ip_lock ) ; if ( __l2tp_ip_bind_lookup ( net , addr -> l2tp_addr . s_addr , sk -> sk_bound_dev_if , addr -> l2tp_conn_id ) ) goto out_in_use ; read_unlock_bh ( & l2tp_ip_lock ) ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> if ( sk -> sk_state != TCP_CLOSE || addr_len < sizeof ( struct sockaddr_l2tpip ) ) goto out ; chk_addr_ret = inet_addr_type ( net , addr -> l2tp_addr . s_addr ) ; ret = - EADDRNOTAVAIL ; if ( addr -> l2tp_addr . s_addr && chk_addr_ret != RTN_LOCAL && chk_addr_ret != RTN_MULTICAST && chk_addr_ret != RTN_BROADCAST ) goto out ; if ( addr -> l2tp_addr . s_addr ) inet -> inet_rcv_saddr = inet -> inet_saddr = addr -> l2tp_addr . s_addr ; if ( chk_addr_ret == RTN_MULTICAST || chk_addr_ret == RTN_BROADCAST ) inet -> inet_saddr = 0 ; sk_dst_reset ( sk ) ; l2tp_ip_sk ( sk ) -> conn_id = addr -> l2tp_conn_id ; write_lock_bh ( & l2tp_ip_lock ) ; sk_add_bind_node ( sk , & l2tp_ip_bind_table ) ; sk_del_node_init ( sk ) ; write_unlock_bh ( & l2tp_ip_lock ) ; ret = 0 ; sock_reset_flag ( sk , SOCK_ZAPPED ) ; out : release_sock ( sk ) ; return ret ; out_in_use : read_unlock_bh ( & l2tp_ip_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( addr_len < sizeof ( struct sockaddr_l2tpip <S2SV_ModEnd> ) ) return <S2SV_ModStart> ; if ( addr -> l2tp_family != AF_INET <S2SV_ModEnd> ) return - <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> ret = - <S2SV_ModStart> ( sk ) ; if ( ! sock_flag ( sk , SOCK_ZAPPED ) ) goto out\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13020\n\n```\nCWE-125 void vtp_print ( netdissect_options * ndo , const u_char * pptr , u_int length ) { int type , len , tlv_len , tlv_value , mgmtd_len ; const u_char * tptr ; const struct vtp_vlan_ * vtp_vlan ; if ( length < VTP_HEADER_LEN ) goto trunc ; tptr = pptr ; ND_TCHECK2 ( * tptr , VTP_HEADER_LEN ) ; type = * ( tptr + 1 ) ; ND_PRINT ( ( ndo , \"VTPv%u,<S2SV_blank>Message<S2SV_blank>%s<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u\" , * tptr , tok2str ( vtp_message_type_values , \"Unknown<S2SV_blank>message<S2SV_blank>type\" , type ) , type , length ) ) ; if ( ndo -> ndo_vflag < 1 ) { return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\tDomain<S2SV_blank>name:<S2SV_blank>\" ) ) ; mgmtd_len = * ( tptr + 3 ) ; if ( mgmtd_len < 1 || mgmtd_len > 32 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[invalid<S2SV_blank>MgmtD<S2SV_blank>Len<S2SV_blank>%d]\" , mgmtd_len ) ) ; return ; } fn_printzp ( ndo , tptr + 4 , mgmtd_len , NULL ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s:<S2SV_blank>%u\" , tok2str ( vtp_header_values , \"Unknown\" , type ) , * ( tptr + 2 ) ) ) ; tptr += VTP_HEADER_LEN ; switch ( type ) { case VTP_SUMMARY_ADV : ND_TCHECK2 ( * tptr , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Config<S2SV_blank>Rev<S2SV_blank>%x,<S2SV_blank>Updater<S2SV_blank>%s\" , EXTRACT_32BITS ( tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; tptr += 8 ; ND_TCHECK2 ( * tptr , VTP_UPDATE_TIMESTAMP_LEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Timestamp<S2SV_blank>0x%08x<S2SV_blank>0x%08x<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) ) ) ; tptr += VTP_UPDATE_TIMESTAMP_LEN ; ND_TCHECK2 ( * tptr , VTP_MD5_DIGEST_LEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>MD5<S2SV_blank>digest:<S2SV_blank>%08x%08x%08x%08x\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , EXTRACT_32BITS ( tptr + 12 ) ) ) ; tptr += VTP_MD5_DIGEST_LEN ; break ; case VTP_SUBSET_ADV : <S2SV_StartBug> ND_PRINT ( ( ndo , \",<S2SV_blank>Config<S2SV_blank>Rev<S2SV_blank>%x\" , EXTRACT_32BITS ( tptr ) ) ) ; <S2SV_EndBug> tptr += 4 ; <S2SV_StartBug> while ( tptr < ( pptr + length ) ) { <S2SV_EndBug> len = * tptr ; if ( len == 0 ) break ; ND_TCHECK2 ( * tptr , len ) ; vtp_vlan = ( const struct vtp_vlan_ * ) tptr ; ND_TCHECK ( * vtp_vlan ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\tVLAN<S2SV_blank>info<S2SV_blank>status<S2SV_blank>%s,<S2SV_blank>type<S2SV_blank>%s,<S2SV_blank>VLAN-id<S2SV_blank>%u,<S2SV_blank>MTU<S2SV_blank>%u,<S2SV_blank>SAID<S2SV_blank>0x%08x,<S2SV_blank>Name<S2SV_blank>\" , tok2str ( vtp_vlan_status , \"Unknown\" , vtp_vlan -> status ) , tok2str ( vtp_vlan_type_values , \"Unknown\" , vtp_vlan -> type ) , EXTRACT_16BITS ( & vtp_vlan -> vlanid ) , EXTRACT_16BITS ( & vtp_vlan -> mtu ) , EXTRACT_32BITS ( & vtp_vlan -> index ) ) ) ; fn_printzp ( ndo , tptr + VTP_VLAN_INFO_OFFSET , vtp_vlan -> name_len , NULL ) ; len -= VTP_VLAN_INFO_OFFSET + 4 * ( ( vtp_vlan -> name_len + 3 ) / 4 ) ; tptr += VTP_VLAN_INFO_OFFSET + 4 * ( ( vtp_vlan -> name_len + 3 ) / 4 ) ; while ( len > 0 ) { type = * tptr ; tlv_len = * ( tptr + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t%s<S2SV_blank>(0x%04x)<S2SV_blank>TLV\" , tok2str ( vtp_vlan_tlv_values , \"Unknown\" , type ) , type ) ) ; if ( type == 0 || tlv_len == 0 ) { return ; } ND_TCHECK2 ( * tptr , tlv_len * 2 + 2 ) ; tlv_value = EXTRACT_16BITS ( tptr + 2 ) ; switch ( type ) { case VTP_VLAN_STE_HOP_COUNT : ND_PRINT ( ( ndo , \",<S2SV_blank>%u\" , tlv_value ) ) ; break ; case VTP_VLAN_PRUNING : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u)\" , tlv_value == 1 ? \"Enabled\" : \"Disabled\" , tlv_value ) ) ; break ; case VTP_VLAN_STP_TYPE : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( vtp_stp_type_values , \"Unknown\" , tlv_value ) , tlv_value ) ) ; break ; case VTP_VLAN_BRIDGE_TYPE : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u)\" , tlv_value == 1 ? \"SRB\" : \"SRT\" , tlv_value ) ) ; break ; case VTP_VLAN_BACKUP_CRF_MODE : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u)\" , tlv_value == 1 ? \"Backup\" : \"Not<S2SV_blank>backup\" , tlv_value ) ) ; break ; case VTP_VLAN_SOURCE_ROUTING_RING_NUMBER : case VTP_VLAN_SOURCE_ROUTING_BRIDGE_NUMBER : case VTP_VLAN_PARENT_VLAN : case VTP_VLAN_TRANS_BRIDGED_VLAN : case VTP_VLAN_ARP_HOP_COUNT : default : print_unknown_data ( ndo , tptr , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>\" , 2 + tlv_len * 2 ) ; break ; } len -= 2 + tlv_len * 2 ; tptr += 2 + tlv_len * 2 ; } } break ; case VTP_ADV_REQUEST : ND_TCHECK2 ( * tptr , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\tStart<S2SV_blank>value:<S2SV_blank>%u\" , EXTRACT_32BITS ( tptr ) ) ) ; break ; case VTP_JOIN_MESSAGE : break ; default : break ; } return ; trunc : ND_PRINT ( ( ndo , \"[|vtp]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case VTP_SUBSET_ADV : ND_TCHECK_32BITS ( tptr ) ; <S2SV_ModStart> ) ) { ND_TCHECK_8BITS ( tptr ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15368\n\n```\nCWE-125 int wasm_dis ( WasmOp * op , const unsigned char * buf , int buf_len ) { op -> len = 1 ; op -> op = buf [ 0 ] ; <S2SV_StartBug> if ( op -> op > 0xbf ) return 1 ; <S2SV_EndBug> WasmOpDef * opdef = & opcodes [ op -> op ] ; switch ( op -> op ) { case WASM_OP_TRAP : case WASM_OP_NOP : case WASM_OP_ELSE : case WASM_OP_RETURN : case WASM_OP_DROP : case WASM_OP_SELECT : case WASM_OP_I32EQZ : case WASM_OP_I32EQ : case WASM_OP_I32NE : case WASM_OP_I32LTS : case WASM_OP_I32LTU : case WASM_OP_I32GTS : case WASM_OP_I32GTU : case WASM_OP_I32LES : case WASM_OP_I32LEU : case WASM_OP_I32GES : case WASM_OP_I32GEU : case WASM_OP_I64EQZ : case WASM_OP_I64EQ : case WASM_OP_I64NE : case WASM_OP_I64LTS : case WASM_OP_I64LTU : case WASM_OP_I64GTS : case WASM_OP_I64GTU : case WASM_OP_I64LES : case WASM_OP_I64LEU : case WASM_OP_I64GES : case WASM_OP_I64GEU : case WASM_OP_F32EQ : case WASM_OP_F32NE : case WASM_OP_F32LT : case WASM_OP_F32GT : case WASM_OP_F32LE : case WASM_OP_F32GE : case WASM_OP_F64EQ : case WASM_OP_F64NE : case WASM_OP_F64LT : case WASM_OP_F64GT : case WASM_OP_F64LE : case WASM_OP_F64GE : case WASM_OP_I32CLZ : case WASM_OP_I32CTZ : case WASM_OP_I32POPCNT : case WASM_OP_I32ADD : case WASM_OP_I32SUB : case WASM_OP_I32MUL : case WASM_OP_I32DIVS : case WASM_OP_I32DIVU : case WASM_OP_I32REMS : case WASM_OP_I32REMU : case WASM_OP_I32AND : case WASM_OP_I32OR : case WASM_OP_I32XOR : case WASM_OP_I32SHL : case WASM_OP_I32SHRS : case WASM_OP_I32SHRU : case WASM_OP_I32ROTL : case WASM_OP_I32ROTR : case WASM_OP_I64CLZ : case WASM_OP_I64CTZ : case WASM_OP_I64POPCNT : case WASM_OP_I64ADD : case WASM_OP_I64SUB : case WASM_OP_I64MUL : case WASM_OP_I64DIVS : case WASM_OP_I64DIVU : case WASM_OP_I64REMS : case WASM_OP_I64REMU : case WASM_OP_I64AND : case WASM_OP_I64OR : case WASM_OP_I64XOR : case WASM_OP_I64SHL : case WASM_OP_I64SHRS : case WASM_OP_I64SHRU : case WASM_OP_I64ROTL : case WASM_OP_I64ROTR : case WASM_OP_F32ABS : case WASM_OP_F32NEG : case WASM_OP_F32CEIL : case WASM_OP_F32FLOOR : case WASM_OP_F32TRUNC : case WASM_OP_F32NEAREST : case WASM_OP_F32SQRT : case WASM_OP_F32ADD : case WASM_OP_F32SUB : case WASM_OP_F32MUL : case WASM_OP_F32DIV : case WASM_OP_F32MIN : case WASM_OP_F32MAX : case WASM_OP_F32COPYSIGN : case WASM_OP_F64ABS : case WASM_OP_F64NEG : case WASM_OP_F64CEIL : case WASM_OP_F64FLOOR : case WASM_OP_F64TRUNC : case WASM_OP_F64NEAREST : case WASM_OP_F64SQRT : case WASM_OP_F64ADD : case WASM_OP_F64SUB : case WASM_OP_F64MUL : case WASM_OP_F64DIV : case WASM_OP_F64MIN : case WASM_OP_F64MAX : case WASM_OP_F64COPYSIGN : case WASM_OP_I32WRAPI64 : case WASM_OP_I32TRUNCSF32 : case WASM_OP_I32TRUNCUF32 : case WASM_OP_I32TRUNCSF64 : case WASM_OP_I32TRUNCUF64 : case WASM_OP_I64EXTENDSI32 : case WASM_OP_I64EXTENDUI32 : case WASM_OP_I64TRUNCSF32 : case WASM_OP_I64TRUNCUF32 : case WASM_OP_I64TRUNCSF64 : case WASM_OP_I64TRUNCUF64 : case WASM_OP_F32CONVERTSI32 : case WASM_OP_F32CONVERTUI32 : case WASM_OP_F32CONVERTSI64 : case WASM_OP_F32CONVERTUI64 : case WASM_OP_F32DEMOTEF64 : case WASM_OP_F64CONVERTSI32 : case WASM_OP_F64CONVERTUI32 : case WASM_OP_F64CONVERTSI64 : case WASM_OP_F64CONVERTUI64 : case WASM_OP_F64PROMOTEF32 : case WASM_OP_I32REINTERPRETF32 : case WASM_OP_I64REINTERPRETF64 : case WASM_OP_F32REINTERPRETI32 : case WASM_OP_F64REINTERPRETI64 : case WASM_OP_END : { snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s\" , opdef -> txt ) ; } break ; case WASM_OP_BLOCK : case WASM_OP_LOOP : case WASM_OP_IF : { st32 val = 0 ; size_t n = read_i32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; switch ( 0x80 - val ) { case R_BIN_WASM_VALUETYPE_EMPTY : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_i32 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>i32)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_i64 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>i64)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_f32 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>f32)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_f64 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>f64)\" , opdef -> txt ) ; break ; default : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>?)\" , opdef -> txt ) ; break ; } op -> len += n ; } break ; case WASM_OP_BR : case WASM_OP_BRIF : case WASM_OP_CALL : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_BRTABLE : { ut32 count = 0 , * table = NULL , def = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & count ) ; <S2SV_StartBug> if ( ! ( n > 0 && n < buf_len ) ) goto err ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( table = calloc ( count , sizeof ( ut32 ) ) ) ) goto err ; <S2SV_EndBug> int i = 0 ; op -> len += n ; for ( i = 0 ; i < count ; i ++ ) { n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & table [ i ] ) ; <S2SV_StartBug> if ( ! ( op -> len + n <= buf_len ) ) goto beach ; <S2SV_EndBug> <S2SV_StartBug> op -> len += n ; <S2SV_EndBug> } n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & def ) ; <S2SV_StartBug> if ( ! ( n > 0 && n + op -> len < buf_len ) ) goto beach ; <S2SV_EndBug> op -> len += n ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>\" , opdef -> txt , count ) ; <S2SV_StartBug> for ( i = 0 ; i < count && strlen ( op -> txt ) < R_ASM_BUFSIZE ; i ++ ) { <S2SV_EndBug> <S2SV_StartBug> snprintf ( op -> txt + strlen ( op -> txt ) , R_ASM_BUFSIZE , \"%d<S2SV_blank>\" , table [ i ] ) ; <S2SV_EndBug> } snprintf ( op -> txt + strlen ( op -> txt ) , R_ASM_BUFSIZE , \"%d\" , def ) ; free ( table ) ; break ; beach : free ( table ) ; goto err ; } break ; case WASM_OP_CALLINDIRECT : { ut32 val = 0 , reserved = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; op -> len += n ; n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & reserved ) ; if ( ! ( n == 1 && op -> len + n <= buf_len ) ) goto err ; reserved &= 0x1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>%d\" , opdef -> txt , val , reserved ) ; op -> len += n ; } break ; case WASM_OP_GETLOCAL : case WASM_OP_SETLOCAL : case WASM_OP_TEELOCAL : case WASM_OP_GETGLOBAL : case WASM_OP_SETGLOBAL : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_I32LOAD : case WASM_OP_I64LOAD : case WASM_OP_F32LOAD : case WASM_OP_F64LOAD : case WASM_OP_I32LOAD8S : case WASM_OP_I32LOAD8U : case WASM_OP_I32LOAD16S : case WASM_OP_I32LOAD16U : case WASM_OP_I64LOAD8S : case WASM_OP_I64LOAD8U : case WASM_OP_I64LOAD16S : case WASM_OP_I64LOAD16U : case WASM_OP_I64LOAD32S : case WASM_OP_I64LOAD32U : case WASM_OP_I32STORE : case WASM_OP_I64STORE : case WASM_OP_F32STORE : case WASM_OP_F64STORE : case WASM_OP_I32STORE8 : case WASM_OP_I32STORE16 : case WASM_OP_I64STORE8 : case WASM_OP_I64STORE16 : case WASM_OP_I64STORE32 : { ut32 flag = 0 , offset = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & flag ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; op -> len += n ; n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & offset ) ; if ( ! ( n > 0 && op -> len + n <= buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>%d\" , opdef -> txt , flag , offset ) ; op -> len += n ; } break ; case WASM_OP_CURRENTMEMORY : case WASM_OP_GROWMEMORY : { ut32 reserved = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & reserved ) ; if ( ! ( n == 1 && n < buf_len ) ) goto err ; reserved &= 0x1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , reserved ) ; op -> len += n ; } break ; case WASM_OP_I32CONST : { st32 val = 0 ; size_t n = read_i32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" PFMT32d , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_I64CONST : { st64 val = 0 ; size_t n = read_i64_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" PFMT64d , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_F32CONST : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; long double d = ( long double ) val ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" LDBLFMT , opdef -> txt , d ) ; op -> len += n ; } break ; case WASM_OP_F64CONST : { ut64 val = 0 ; size_t n = read_u64_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; long double d = ( long double ) val ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" LDBLFMT , opdef -> txt , d ) ; op -> len += n ; } break ; default : goto err ; } return op -> len ; err : op -> len = 1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"invalid\" ) ; return op -> len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> > 0xbf ) { <S2SV_ModStart> return 1 ; } <S2SV_ModStart> buf_len ) ) { <S2SV_ModStart> goto err ; } <S2SV_ModStart> ) ) ) { <S2SV_ModStart> goto err ; } <S2SV_ModStart> buf_len ) ) { <S2SV_ModStart> goto beach ; } <S2SV_ModStart> buf_len ) ) { <S2SV_ModStart> goto beach ; } <S2SV_ModStart> -> txt ) + 10 <S2SV_ModStart> ++ ) { int optxtlen = strlen ( op -> txt ) ; <S2SV_ModStart> -> txt + optxtlen , R_ASM_BUFSIZE - optxtlen <S2SV_ModEnd> , \"%d<S2SV_blank>\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9683\n\n```\nCWE-189 static void ecryptfs_decode_from_filename ( unsigned char * dst , size_t * dst_size , const unsigned char * src , size_t src_size ) { u8 current_bit_offset = 0 ; size_t src_byte_offset = 0 ; size_t dst_byte_offset = 0 ; if ( dst == NULL ) { ( * dst_size ) = ecryptfs_max_decoded_size ( src_size ) ; goto out ; } while ( src_byte_offset < src_size ) { unsigned char src_byte = filename_rev_map [ ( int ) src [ src_byte_offset ] ] ; switch ( current_bit_offset ) { case 0 : dst [ dst_byte_offset ] = ( src_byte << 2 ) ; current_bit_offset = 6 ; break ; case 6 : dst [ dst_byte_offset ++ ] |= ( src_byte >> 4 ) ; dst [ dst_byte_offset ] = ( ( src_byte & 0xF ) << 4 ) ; current_bit_offset = 4 ; break ; case 4 : dst [ dst_byte_offset ++ ] |= ( src_byte >> 2 ) ; dst [ dst_byte_offset ] = ( src_byte << 6 ) ; current_bit_offset = 2 ; break ; case 2 : dst [ dst_byte_offset ++ ] |= ( src_byte ) ; <S2SV_StartBug> dst [ dst_byte_offset ] = 0 ; <S2SV_EndBug> current_bit_offset = 0 ; break ; } src_byte_offset ++ ; } ( * dst_size ) = dst_byte_offset ; out : return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> src_byte ) ; <S2SV_ModEnd> current_bit_offset = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19959\n\n```\nCWE-000 static int zipfileUpdate ( sqlite3_vtab * pVtab , int nVal , sqlite3_value * * apVal , sqlite_int64 * pRowid ) { ZipfileTab * pTab = ( ZipfileTab * ) pVtab ; int rc = SQLITE_OK ; ZipfileEntry * pNew = 0 ; u32 mode = 0 ; u32 mTime = 0 ; i64 sz = 0 ; const char * zPath = 0 ; int nPath = 0 ; const u8 * pData = 0 ; int nData = 0 ; int iMethod = 0 ; u8 * pFree = 0 ; char * zFree = 0 ; ZipfileEntry * pOld = 0 ; ZipfileEntry * pOld2 = 0 ; int bUpdate = 0 ; int bIsDir = 0 ; u32 iCrc32 = 0 ; if ( pTab -> pWriteFd == 0 ) { rc = zipfileBegin ( pVtab ) ; if ( rc != SQLITE_OK ) return rc ; } if ( sqlite3_value_type ( apVal [ 0 ] ) != SQLITE_NULL ) { const char * zDelete = ( const char * ) sqlite3_value_text ( apVal [ 0 ] ) ; int nDelete = ( int ) strlen ( zDelete ) ; if ( nVal > 1 ) { const char * zUpdate = ( const char * ) sqlite3_value_text ( apVal [ 1 ] ) ; if ( zUpdate && zipfileComparePath ( zUpdate , zDelete , nDelete ) != 0 ) { bUpdate = 1 ; } } for ( pOld = pTab -> pFirstEntry ; 1 ; pOld = pOld -> pNext ) { if ( zipfileComparePath ( pOld -> cds . zFile , zDelete , nDelete ) == 0 ) { break ; } assert ( pOld -> pNext ) ; } } if ( nVal > 1 ) { if ( sqlite3_value_type ( apVal [ 5 ] ) != SQLITE_NULL ) { zipfileTableErr ( pTab , \"sz<S2SV_blank>must<S2SV_blank>be<S2SV_blank>NULL\" ) ; rc = SQLITE_CONSTRAINT ; } if ( sqlite3_value_type ( apVal [ 6 ] ) != SQLITE_NULL ) { zipfileTableErr ( pTab , \"rawdata<S2SV_blank>must<S2SV_blank>be<S2SV_blank>NULL\" ) ; rc = SQLITE_CONSTRAINT ; } if ( rc == SQLITE_OK ) { if ( sqlite3_value_type ( apVal [ 7 ] ) == SQLITE_NULL ) { bIsDir = 1 ; } else { const u8 * aIn = sqlite3_value_blob ( apVal [ 7 ] ) ; int nIn = sqlite3_value_bytes ( apVal [ 7 ] ) ; int bAuto = sqlite3_value_type ( apVal [ 8 ] ) == SQLITE_NULL ; iMethod = sqlite3_value_int ( apVal [ 8 ] ) ; sz = nIn ; pData = aIn ; nData = nIn ; if ( iMethod != 0 && iMethod != 8 ) { zipfileTableErr ( pTab , \"unknown<S2SV_blank>compression<S2SV_blank>method:<S2SV_blank>%d\" , iMethod ) ; rc = SQLITE_CONSTRAINT ; } else { if ( bAuto || iMethod ) { int nCmp ; rc = zipfileDeflate ( aIn , nIn , & pFree , & nCmp , & pTab -> base . zErrMsg ) ; if ( rc == SQLITE_OK ) { if ( iMethod || nCmp < nIn ) { iMethod = 8 ; pData = pFree ; nData = nCmp ; } } } iCrc32 = crc32 ( 0 , aIn , nIn ) ; } } } if ( rc == SQLITE_OK ) { rc = zipfileGetMode ( apVal [ 3 ] , bIsDir , & mode , & pTab -> base . zErrMsg ) ; } if ( rc == SQLITE_OK ) { zPath = ( const char * ) sqlite3_value_text ( apVal [ 2 ] ) ; if ( zPath == 0 ) zPath = \"\" ; nPath = ( int ) strlen ( zPath ) ; mTime = zipfileGetTime ( apVal [ 4 ] ) ; } if ( rc == SQLITE_OK && bIsDir ) { if ( zPath [ nPath - 1 ] != '/' ) { zFree = sqlite3_mprintf ( \"%s/\" , zPath ) ; if ( zFree == 0 ) { rc = SQLITE_NOMEM ; } zPath = ( const char * ) zFree ; <S2SV_StartBug> nPath ++ ; <S2SV_EndBug> } } if ( ( pOld == 0 || bUpdate ) && rc == SQLITE_OK ) { ZipfileEntry * p ; for ( p = pTab -> pFirstEntry ; p ; p = p -> pNext ) { if ( zipfileComparePath ( p -> cds . zFile , zPath , nPath ) == 0 ) { switch ( sqlite3_vtab_on_conflict ( pTab -> db ) ) { case SQLITE_IGNORE : { goto zipfile_update_done ; } case SQLITE_REPLACE : { pOld2 = p ; break ; } default : { zipfileTableErr ( pTab , \"duplicate<S2SV_blank>name:<S2SV_blank>\\\\\"%s\\\\\"\" , zPath ) ; rc = SQLITE_CONSTRAINT ; break ; } } break ; } } } if ( rc == SQLITE_OK ) { pNew = zipfileNewEntry ( zPath ) ; if ( pNew == 0 ) { rc = SQLITE_NOMEM ; } else { pNew -> cds . iVersionMadeBy = ZIPFILE_NEWENTRY_MADEBY ; pNew -> cds . iVersionExtract = ZIPFILE_NEWENTRY_REQUIRED ; pNew -> cds . flags = ZIPFILE_NEWENTRY_FLAGS ; pNew -> cds . iCompression = ( u16 ) iMethod ; zipfileMtimeToDos ( & pNew -> cds , mTime ) ; pNew -> cds . crc32 = iCrc32 ; pNew -> cds . szCompressed = nData ; pNew -> cds . szUncompressed = ( u32 ) sz ; pNew -> cds . iExternalAttr = ( mode << 16 ) ; pNew -> cds . iOffset = ( u32 ) pTab -> szCurrent ; pNew -> cds . nFile = ( u16 ) nPath ; pNew -> mUnixTime = ( u32 ) mTime ; rc = zipfileAppendEntry ( pTab , pNew , pData , nData ) ; zipfileAddEntry ( pTab , pOld , pNew ) ; } } } if ( rc == SQLITE_OK && ( pOld || pOld2 ) ) { ZipfileCsr * pCsr ; for ( pCsr = pTab -> pCsrList ; pCsr ; pCsr = pCsr -> pCsrNext ) { if ( pCsr -> pCurrent && ( pCsr -> pCurrent == pOld || pCsr -> pCurrent == pOld2 ) ) { pCsr -> pCurrent = pCsr -> pCurrent -> pNext ; pCsr -> bNoop = 1 ; } } zipfileRemoveEntryFromList ( pTab , pOld ) ; zipfileRemoveEntryFromList ( pTab , pOld2 ) ; } zipfile_update_done : sqlite3_free ( pFree ) ; sqlite3_free ( zFree ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> zFree ; nPath = ( int ) strlen ( zPath ) <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3570\n\n```\nCWE-310 void bn_mul_comba8 ( BN_ULONG * r , BN_ULONG * a , BN_ULONG * b ) { <S2SV_StartBug> BN_ULONG t1 , t2 ; <S2SV_EndBug> BN_ULONG c1 , c2 , c3 ; c1 = 0 ; c2 = 0 ; c3 = 0 ; mul_add_c ( a [ 0 ] , b [ 0 ] , c1 , c2 , c3 ) ; r [ 0 ] = c1 ; c1 = 0 ; mul_add_c ( a [ 0 ] , b [ 1 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 1 ] , b [ 0 ] , c2 , c3 , c1 ) ; r [ 1 ] = c2 ; c2 = 0 ; mul_add_c ( a [ 2 ] , b [ 0 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 1 ] , b [ 1 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 0 ] , b [ 2 ] , c3 , c1 , c2 ) ; r [ 2 ] = c3 ; c3 = 0 ; mul_add_c ( a [ 0 ] , b [ 3 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 1 ] , b [ 2 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 2 ] , b [ 1 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 3 ] , b [ 0 ] , c1 , c2 , c3 ) ; r [ 3 ] = c1 ; c1 = 0 ; mul_add_c ( a [ 4 ] , b [ 0 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 3 ] , b [ 1 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 2 ] , b [ 2 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 1 ] , b [ 3 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 0 ] , b [ 4 ] , c2 , c3 , c1 ) ; r [ 4 ] = c2 ; c2 = 0 ; mul_add_c ( a [ 0 ] , b [ 5 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 1 ] , b [ 4 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 2 ] , b [ 3 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 3 ] , b [ 2 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 4 ] , b [ 1 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 5 ] , b [ 0 ] , c3 , c1 , c2 ) ; r [ 5 ] = c3 ; c3 = 0 ; mul_add_c ( a [ 6 ] , b [ 0 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 5 ] , b [ 1 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 4 ] , b [ 2 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 3 ] , b [ 3 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 2 ] , b [ 4 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 1 ] , b [ 5 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 0 ] , b [ 6 ] , c1 , c2 , c3 ) ; r [ 6 ] = c1 ; c1 = 0 ; mul_add_c ( a [ 0 ] , b [ 7 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 1 ] , b [ 6 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 2 ] , b [ 5 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 3 ] , b [ 4 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 4 ] , b [ 3 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 5 ] , b [ 2 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 6 ] , b [ 1 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 7 ] , b [ 0 ] , c2 , c3 , c1 ) ; r [ 7 ] = c2 ; c2 = 0 ; mul_add_c ( a [ 7 ] , b [ 1 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 6 ] , b [ 2 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 5 ] , b [ 3 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 4 ] , b [ 4 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 3 ] , b [ 5 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 2 ] , b [ 6 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 1 ] , b [ 7 ] , c3 , c1 , c2 ) ; r [ 8 ] = c3 ; c3 = 0 ; mul_add_c ( a [ 2 ] , b [ 7 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 3 ] , b [ 6 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 4 ] , b [ 5 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 5 ] , b [ 4 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 6 ] , b [ 3 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 7 ] , b [ 2 ] , c1 , c2 , c3 ) ; r [ 9 ] = c1 ; c1 = 0 ; mul_add_c ( a [ 7 ] , b [ 3 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 6 ] , b [ 4 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 5 ] , b [ 5 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 4 ] , b [ 6 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 3 ] , b [ 7 ] , c2 , c3 , c1 ) ; r [ 10 ] = c2 ; c2 = 0 ; mul_add_c ( a [ 4 ] , b [ 7 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 5 ] , b [ 6 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 6 ] , b [ 5 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 7 ] , b [ 4 ] , c3 , c1 , c2 ) ; r [ 11 ] = c3 ; c3 = 0 ; mul_add_c ( a [ 7 ] , b [ 5 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 6 ] , b [ 6 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 5 ] , b [ 7 ] , c1 , c2 , c3 ) ; r [ 12 ] = c1 ; c1 = 0 ; mul_add_c ( a [ 6 ] , b [ 7 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 7 ] , b [ 6 ] , c2 , c3 , c1 ) ; r [ 13 ] = c2 ; c2 = 0 ; mul_add_c ( a [ 7 ] , b [ 7 ] , c3 , c1 , c2 ) ; r [ 14 ] = c3 ; r [ 15 ] = c1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { BN_ULONG <S2SV_ModEnd> c1 , c2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5104\n\n```\nCWE-284 int socket_create ( uint16_t port ) { int sfd = - 1 ; int yes = 1 ; # ifdef WIN32 WSADATA wsa_data ; if ( ! wsa_init ) { if ( WSAStartup ( MAKEWORD ( 2 , 2 ) , & wsa_data ) != ERROR_SUCCESS ) { fprintf ( stderr , \"WSAStartup<S2SV_blank>failed!\\\\n\" ) ; ExitProcess ( - 1 ) ; } wsa_init = 1 ; } # endif struct sockaddr_in saddr ; if ( 0 > ( sfd = socket ( PF_INET , SOCK_STREAM , IPPROTO_TCP ) ) ) { perror ( \"socket()\" ) ; return - 1 ; } if ( setsockopt ( sfd , SOL_SOCKET , SO_REUSEADDR , ( void * ) & yes , sizeof ( int ) ) == - 1 ) { perror ( \"setsockopt()\" ) ; socket_close ( sfd ) ; return - 1 ; } memset ( ( void * ) & saddr , 0 , sizeof ( saddr ) ) ; saddr . sin_family = AF_INET ; <S2SV_StartBug> saddr . sin_addr . s_addr = htonl ( INADDR_ANY ) ; <S2SV_EndBug> saddr . sin_port = htons ( port ) ; if ( 0 > bind ( sfd , ( struct sockaddr * ) & saddr , sizeof ( saddr ) ) ) { perror ( \"bind()\" ) ; socket_close ( sfd ) ; return - 1 ; } if ( listen ( sfd , 1 ) == - 1 ) { perror ( \"listen()\" ) ; socket_close ( sfd ) ; return - 1 ; } return sfd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = htonl ( INADDR_LOOPBACK <S2SV_ModEnd> ) ; saddr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8068\n\n```\nCWE-119 static int get_registers ( pegasus_t * pegasus , __u16 indx , __u16 size , void * data ) { <S2SV_StartBug> int ret ; <S2SV_EndBug> ret = usb_control_msg ( pegasus -> usb , usb_rcvctrlpipe ( pegasus -> usb , 0 ) , PEGASUS_REQ_GET_REGS , PEGASUS_REQT_READ , 0 , <S2SV_StartBug> indx , data , size , 1000 ) ; <S2SV_EndBug> if ( ret < 0 ) netif_dbg ( pegasus , drv , pegasus -> net , \"%s<S2SV_blank>returned<S2SV_blank>%d\\\\n\" , __func__ , ret ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { u8 * buf ; int ret ; buf = kmalloc ( size , GFP_NOIO ) ; if ( ! buf ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> , indx , buf <S2SV_ModEnd> , size , <S2SV_ModStart> ret ) ; else if ( ret <= size ) memcpy ( data , buf , ret ) ; kfree ( buf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5847\n\n```\nCWE-125 static GstFlowReturn gst_asf_demux_process_ext_content_desc ( GstASFDemux * demux , guint8 * data , guint64 size ) { GstTagList * taglist ; guint16 blockcount , i ; gboolean content3D = FALSE ; struct { const gchar * interleave_name ; GstASF3DMode interleaving_type ; } stereoscopic_layout_map [ ] = { { \"SideBySideRF\" , GST_ASF_3D_SIDE_BY_SIDE_HALF_RL } , { \"SideBySideLF\" , GST_ASF_3D_SIDE_BY_SIDE_HALF_LR } , { \"OverUnderRT\" , GST_ASF_3D_TOP_AND_BOTTOM_HALF_RL } , { \"OverUnderLT\" , GST_ASF_3D_TOP_AND_BOTTOM_HALF_LR } , { \"DualStream\" , GST_ASF_3D_DUAL_STREAM } } ; GST_INFO_OBJECT ( demux , \"object<S2SV_blank>is<S2SV_blank>an<S2SV_blank>extended<S2SV_blank>content<S2SV_blank>description\" ) ; taglist = gst_tag_list_new_empty ( ) ; if ( size < 2 ) goto not_enough_data ; blockcount = gst_asf_demux_get_uint16 ( & data , & size ) ; for ( i = 1 ; i <= blockcount ; ++ i ) { const gchar * gst_tag_name ; guint16 datatype ; guint16 value_len ; guint16 name_len ; GValue tag_value = { 0 , } ; gsize in , out ; gchar * name ; gchar * name_utf8 = NULL ; gchar * value ; if ( ! gst_asf_demux_get_string ( & name , & name_len , & data , & size ) ) goto not_enough_data ; if ( size < 2 ) { g_free ( name ) ; goto not_enough_data ; } datatype = gst_asf_demux_get_uint16 ( & data , & size ) ; if ( ! gst_asf_demux_get_string ( & value , & value_len , & data , & size ) ) { g_free ( name ) ; goto not_enough_data ; } name_utf8 = g_convert ( name , name_len , \"UTF-8\" , \"UTF-16LE\" , & in , & out , NULL ) ; if ( name_utf8 != NULL ) { GST_DEBUG ( \"Found<S2SV_blank>tag/metadata<S2SV_blank>%s\" , name_utf8 ) ; gst_tag_name = gst_asf_demux_get_gst_tag_from_tag_name ( name_utf8 ) ; GST_DEBUG ( \"gst_tag_name<S2SV_blank>%s\" , GST_STR_NULL ( gst_tag_name ) ) ; switch ( datatype ) { case ASF_DEMUX_DATA_TYPE_UTF16LE_STRING : { gchar * value_utf8 ; value_utf8 = g_convert ( value , value_len , \"UTF-8\" , \"UTF-16LE\" , & in , & out , NULL ) ; if ( value_utf8 != NULL && * value_utf8 != '\\\\0' ) { GST_DEBUG ( \"string<S2SV_blank>value<S2SV_blank>%s\" , value_utf8 ) ; value_utf8 [ out ] = '\\\\0' ; if ( gst_tag_name != NULL ) { if ( strcmp ( gst_tag_name , GST_TAG_DATE_TIME ) == 0 ) { guint year = atoi ( value_utf8 ) ; if ( year > 0 ) { g_value_init ( & tag_value , GST_TYPE_DATE_TIME ) ; g_value_take_boxed ( & tag_value , gst_date_time_new_y ( year ) ) ; } } else if ( strcmp ( gst_tag_name , GST_TAG_GENRE ) == 0 ) { guint id3v1_genre_id ; const gchar * genre_str ; if ( sscanf ( value_utf8 , \"(%u)\" , & id3v1_genre_id ) == 1 && ( ( genre_str = gst_tag_id3_genre_get ( id3v1_genre_id ) ) ) ) { GST_DEBUG ( \"Genre:<S2SV_blank>%s<S2SV_blank>-><S2SV_blank>%s\" , value_utf8 , genre_str ) ; g_free ( value_utf8 ) ; value_utf8 = g_strdup ( genre_str ) ; } } else { GType tag_type ; tag_type = gst_tag_get_type ( gst_tag_name ) ; g_value_init ( & tag_value , tag_type ) ; if ( ! gst_value_deserialize ( & tag_value , value_utf8 ) ) { GValue from_val = { 0 , } ; g_value_init ( & from_val , G_TYPE_STRING ) ; g_value_set_string ( & from_val , value_utf8 ) ; if ( ! g_value_transform ( & from_val , & tag_value ) ) { GST_WARNING_OBJECT ( demux , \"Could<S2SV_blank>not<S2SV_blank>transform<S2SV_blank>string<S2SV_blank>tag<S2SV_blank>to<S2SV_blank>\" \"%s<S2SV_blank>tag<S2SV_blank>type<S2SV_blank>%s\" , gst_tag_name , g_type_name ( tag_type ) ) ; g_value_unset ( & tag_value ) ; } g_value_unset ( & from_val ) ; } } } else { GST_DEBUG ( \"Setting<S2SV_blank>metadata\" ) ; g_value_init ( & tag_value , G_TYPE_STRING ) ; g_value_set_string ( & tag_value , value_utf8 ) ; if ( content3D ) { guint i ; if ( strncmp ( \"StereoscopicLayout\" , name_utf8 , strlen ( name_utf8 ) ) == 0 ) { for ( i = 0 ; i < G_N_ELEMENTS ( stereoscopic_layout_map ) ; i ++ ) { if ( g_str_equal ( stereoscopic_layout_map [ i ] . interleave_name , value_utf8 ) ) { demux -> asf_3D_mode = stereoscopic_layout_map [ i ] . interleaving_type ; GST_INFO ( \"find<S2SV_blank>interleave<S2SV_blank>type<S2SV_blank>%u\" , demux -> asf_3D_mode ) ; } } } GST_INFO_OBJECT ( demux , \"3d<S2SV_blank>type<S2SV_blank>is<S2SV_blank>%u\" , demux -> asf_3D_mode ) ; } else { demux -> asf_3D_mode = GST_ASF_3D_NONE ; GST_INFO_OBJECT ( demux , \"None<S2SV_blank>3d<S2SV_blank>type\" ) ; } } } else if ( value_utf8 == NULL ) { GST_WARNING ( \"Failed<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>string<S2SV_blank>value<S2SV_blank>to<S2SV_blank>UTF8,<S2SV_blank>skipping\" ) ; } else { GST_DEBUG ( \"Skipping<S2SV_blank>empty<S2SV_blank>string<S2SV_blank>value<S2SV_blank>for<S2SV_blank>%s\" , GST_STR_NULL ( gst_tag_name ) ) ; } g_free ( value_utf8 ) ; break ; } case ASF_DEMUX_DATA_TYPE_BYTE_ARRAY : { if ( gst_tag_name ) { if ( ! g_str_equal ( gst_tag_name , GST_TAG_IMAGE ) ) { GST_FIXME ( \"Unhandled<S2SV_blank>byte<S2SV_blank>array<S2SV_blank>tag<S2SV_blank>%s\" , GST_STR_NULL ( gst_tag_name ) ) ; break ; } else { asf_demux_parse_picture_tag ( taglist , ( guint8 * ) value , value_len ) ; } } break ; } case ASF_DEMUX_DATA_TYPE_DWORD : { <S2SV_StartBug> guint uint_val = GST_READ_UINT32_LE ( value ) ; <S2SV_EndBug> g_value_init ( & tag_value , G_TYPE_UINT ) ; if ( ! strcmp ( name_utf8 , \"WM/Track\" ) ) ++ uint_val ; g_value_set_uint ( & tag_value , uint_val ) ; break ; } case ASF_DEMUX_DATA_TYPE_BOOL : { <S2SV_StartBug> gboolean bool_val = GST_READ_UINT32_LE ( value ) ; <S2SV_EndBug> if ( strncmp ( \"Stereoscopic\" , name_utf8 , strlen ( name_utf8 ) ) == 0 ) { if ( bool_val ) { GST_INFO_OBJECT ( demux , \"This<S2SV_blank>is<S2SV_blank>3D<S2SV_blank>contents\" ) ; content3D = TRUE ; } else { GST_INFO_OBJECT ( demux , \"This<S2SV_blank>is<S2SV_blank>not<S2SV_blank>3D<S2SV_blank>contenst\" ) ; content3D = FALSE ; } } break ; } default : { GST_DEBUG ( \"Skipping<S2SV_blank>tag<S2SV_blank>%s<S2SV_blank>of<S2SV_blank>type<S2SV_blank>%d\" , gst_tag_name , datatype ) ; break ; } } if ( G_IS_VALUE ( & tag_value ) ) { if ( gst_tag_name ) { GstTagMergeMode merge_mode = GST_TAG_MERGE_APPEND ; if ( strcmp ( name_utf8 , \"WM/TrackNumber\" ) == 0 ) merge_mode = GST_TAG_MERGE_REPLACE ; gst_tag_list_add_values ( taglist , merge_mode , gst_tag_name , & tag_value , NULL ) ; } else { GST_DEBUG ( \"Setting<S2SV_blank>global<S2SV_blank>metadata<S2SV_blank>%s\" , name_utf8 ) ; gst_structure_set_value ( demux -> global_metadata , name_utf8 , & tag_value ) ; } g_value_unset ( & tag_value ) ; } } g_free ( name ) ; g_free ( value ) ; g_free ( name_utf8 ) ; } gst_asf_demux_add_global_tags ( demux , taglist ) ; return GST_FLOW_OK ; not_enough_data : { GST_WARNING ( \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>data<S2SV_blank>parsing<S2SV_blank>ext<S2SV_blank>content<S2SV_blank>desc<S2SV_blank>object\" ) ; gst_tag_list_unref ( taglist ) ; return GST_FLOW_OK ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { guint uint_val ; if ( value_len < 4 ) break ; uint_val <S2SV_ModStart> { gboolean bool_val ; if ( value_len < 4 ) break ; bool_val\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9051\n\n```\nCWE-476 static int nsv_read_chunk ( AVFormatContext * s , int fill_header ) { NSVContext * nsv = s -> priv_data ; AVIOContext * pb = s -> pb ; AVStream * st [ 2 ] = { NULL , NULL } ; NSVStream * nst ; AVPacket * pkt ; int i , err = 0 ; uint8_t auxcount ; uint32_t vsize ; uint16_t asize ; <S2SV_StartBug> uint16_t auxsize ; <S2SV_EndBug> if ( nsv -> ahead [ 0 ] . data || nsv -> ahead [ 1 ] . data ) return 0 ; null_chunk_retry : if ( pb -> eof_reached ) return - 1 ; for ( i = 0 ; i < NSV_MAX_RESYNC_TRIES && nsv -> state < NSV_FOUND_NSVS && ! err ; i ++ ) err = nsv_resync ( s ) ; if ( err < 0 ) return err ; if ( nsv -> state == NSV_FOUND_NSVS ) err = nsv_parse_NSVs_header ( s ) ; if ( err < 0 ) return err ; if ( nsv -> state != NSV_HAS_READ_NSVS && nsv -> state != NSV_FOUND_BEEF ) return - 1 ; auxcount = avio_r8 ( pb ) ; vsize = avio_rl16 ( pb ) ; asize = avio_rl16 ( pb ) ; vsize = ( vsize << 4 ) | ( auxcount >> 4 ) ; auxcount &= 0x0f ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>CHUNK<S2SV_blank>%\" PRIu8 \"<S2SV_blank>aux,<S2SV_blank>%\" PRIu32 \"<S2SV_blank>bytes<S2SV_blank>video,<S2SV_blank>%\" PRIu16 \"<S2SV_blank>bytes<S2SV_blank>audio\\\\n\" , auxcount , vsize , asize ) ; for ( i = 0 ; i < auxcount ; i ++ ) { uint32_t av_unused auxtag ; auxsize = avio_rl16 ( pb ) ; auxtag = avio_rl32 ( pb ) ; avio_skip ( pb , auxsize ) ; vsize -= auxsize + sizeof ( uint16_t ) + sizeof ( uint32_t ) ; } if ( pb -> eof_reached ) return - 1 ; if ( ! vsize && ! asize ) { nsv -> state = NSV_UNSYNC ; goto null_chunk_retry ; } if ( s -> nb_streams > 0 ) st [ s -> streams [ 0 ] -> id ] = s -> streams [ 0 ] ; if ( s -> nb_streams > 1 ) st [ s -> streams [ 1 ] -> id ] = s -> streams [ 1 ] ; if ( vsize && st [ NSV_ST_VIDEO ] ) { nst = st [ NSV_ST_VIDEO ] -> priv_data ; pkt = & nsv -> ahead [ NSV_ST_VIDEO ] ; <S2SV_StartBug> av_get_packet ( pb , pkt , vsize ) ; <S2SV_EndBug> pkt -> stream_index = st [ NSV_ST_VIDEO ] -> index ; pkt -> dts = nst -> frame_offset ; pkt -> flags |= nsv -> state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0 ; for ( i = 0 ; i < FFMIN ( 8 , vsize ) ; i ++ ) av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>video:<S2SV_blank>[%d]<S2SV_blank>=<S2SV_blank>%02\" PRIx8 \"\\\\n\" , i , pkt -> data [ i ] ) ; } if ( st [ NSV_ST_VIDEO ] ) ( ( NSVStream * ) st [ NSV_ST_VIDEO ] -> priv_data ) -> frame_offset ++ ; if ( asize && st [ NSV_ST_AUDIO ] ) { nst = st [ NSV_ST_AUDIO ] -> priv_data ; pkt = & nsv -> ahead [ NSV_ST_AUDIO ] ; if ( asize && st [ NSV_ST_AUDIO ] -> codecpar -> codec_tag == MKTAG ( 'P' , 'C' , 'M' , '<S2SV_blank>' ) ) { uint8_t bps ; uint8_t channels ; uint16_t samplerate ; bps = avio_r8 ( pb ) ; channels = avio_r8 ( pb ) ; samplerate = avio_rl16 ( pb ) ; if ( ! channels || ! samplerate ) return AVERROR_INVALIDDATA ; asize -= 4 ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>RAWAUDIO:<S2SV_blank>bps<S2SV_blank>%\" PRIu8 \",<S2SV_blank>nchan<S2SV_blank>%\" PRIu8 \",<S2SV_blank>srate<S2SV_blank>%\" PRIu16 \"\\\\n\" , bps , channels , samplerate ) ; if ( fill_header ) { st [ NSV_ST_AUDIO ] -> need_parsing = AVSTREAM_PARSE_NONE ; if ( bps != 16 ) { av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>AUDIO<S2SV_blank>bit/sample<S2SV_blank>!=<S2SV_blank>16<S2SV_blank>(%\" PRIu8 \")!!!\\\\n\" , bps ) ; } bps /= channels ; if ( bps == 8 ) st [ NSV_ST_AUDIO ] -> codecpar -> codec_id = AV_CODEC_ID_PCM_U8 ; samplerate /= 4 ; channels = 1 ; st [ NSV_ST_AUDIO ] -> codecpar -> channels = channels ; st [ NSV_ST_AUDIO ] -> codecpar -> sample_rate = samplerate ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>RAWAUDIO:<S2SV_blank>bps<S2SV_blank>%\" PRIu8 \",<S2SV_blank>nchan<S2SV_blank>%\" PRIu8 \",<S2SV_blank>srate<S2SV_blank>%\" PRIu16 \"\\\\n\" , bps , channels , samplerate ) ; } } <S2SV_StartBug> av_get_packet ( pb , pkt , asize ) ; <S2SV_EndBug> pkt -> stream_index = st [ NSV_ST_AUDIO ] -> index ; pkt -> flags |= nsv -> state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0 ; if ( nsv -> state == NSV_HAS_READ_NSVS && st [ NSV_ST_VIDEO ] ) { pkt -> dts = ( ( ( NSVStream * ) st [ NSV_ST_VIDEO ] -> priv_data ) -> frame_offset - 1 ) ; pkt -> dts *= ( int64_t ) 1000 * nsv -> framerate . den ; pkt -> dts += ( int64_t ) nsv -> avsync * nsv -> framerate . num ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>AUDIO:<S2SV_blank>sync:%\" PRId16 \",<S2SV_blank>dts:%\" PRId64 , nsv -> avsync , pkt -> dts ) ; } nst -> frame_offset ++ ; } nsv -> state = NSV_UNSYNC ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint16_t auxsize ; int ret <S2SV_ModStart> NSV_ST_VIDEO ] ; if ( ( ret = <S2SV_ModStart> , vsize ) ) < 0 ) return ret <S2SV_ModStart> ; } } if ( ( ret = <S2SV_ModStart> , asize ) ) < 0 ) return ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27153\n\n```\nCWE-415 bool bt_att_cancel ( struct bt_att * att , unsigned int id ) { const struct queue_entry * entry ; struct att_send_op * op ; if ( ! att || ! id ) return false ; for ( entry = queue_get_entries ( att -> chans ) ; entry ; entry = entry -> next ) { struct bt_att_chan * chan = entry -> data ; if ( bt_att_chan_cancel ( chan , id ) ) return true ; } <S2SV_StartBug> op = queue_remove_if ( att -> req_queue , match_op_id , UINT_TO_PTR ( id ) ) ; <S2SV_EndBug> if ( op ) goto done ; op = queue_remove_if ( att -> ind_queue , match_op_id , UINT_TO_PTR ( id ) ) ; if ( op ) goto done ; op = queue_remove_if ( att -> write_queue , match_op_id , UINT_TO_PTR ( id ) ) ; if ( op ) goto done ; if ( ! op ) return false ; done : destroy_att_send_op ( op ) ; wakeup_writer ( att ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> true ; } if ( att -> in_disc ) return bt_att_disc_cancel ( att , id ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * setkey_principal_2_svc ( setkey_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( ! ( CHANGEPW_SERVICE ( rqstp ) ) && kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_SETKEY , arg -> princ , NULL ) ) { ret . code = kadm5_setkey_principal ( ( void * ) handle , arg -> princ , arg -> keyblocks , arg -> n_keys ) ; } else { log_unauth ( \"kadm5_setkey_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_SETKEY ; } if ( ret . code != KADM5_AUTH_SETKEY ) { if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_setkey_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_StartBug> exit_func : <S2SV_EndBug> free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : <S2SV_ModStart> service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3183\n\n```\nCWE-125 static void sycc444_to_rgb ( opj_image_t * img ) { int * d0 , * d1 , * d2 , * r , * g , * b ; const int * y , * cb , * cr ; <S2SV_StartBug> unsigned int maxw , maxh , max , i ; <S2SV_EndBug> int offset , upb ; upb = ( int ) img -> comps [ 0 ] . prec ; offset = 1 << ( upb - 1 ) ; upb = ( 1 << upb ) - 1 ; <S2SV_StartBug> maxw = ( unsigned int ) img -> comps [ 0 ] . w ; maxh = ( unsigned int ) img -> comps [ 0 ] . h ; <S2SV_EndBug> max = maxw * maxh ; y = img -> comps [ 0 ] . data ; cb = img -> comps [ 1 ] . data ; cr = img -> comps [ 2 ] . data ; <S2SV_StartBug> d0 = r = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> <S2SV_StartBug> d1 = g = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> <S2SV_StartBug> d2 = b = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> if ( r == NULL || g == NULL || b == NULL ) goto fails ; for ( i = 0U ; i < max ; ++ i ) { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ cb ; ++ cr ; ++ r ; ++ g ; ++ b ; } free ( img -> comps [ 0 ] . data ) ; img -> comps [ 0 ] . data = d0 ; free ( img -> comps [ 1 ] . data ) ; img -> comps [ 1 ] . data = d1 ; free ( img -> comps [ 2 ] . data ) ; img -> comps [ 2 ] . data = d2 ; <S2SV_StartBug> return ; <S2SV_EndBug> fails : <S2SV_StartBug> if ( r ) free ( r ) ; <S2SV_EndBug> if ( g ) free ( g ) ; if ( b ) free ( b ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cr ; size_t <S2SV_ModEnd> maxw , maxh <S2SV_ModStart> maxw = ( size_t <S2SV_ModEnd> ) img -> <S2SV_ModStart> maxh = ( size_t <S2SV_ModEnd> ) img -> <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> = d2 ; img -> color_space = OPJ_CLRSPC_SRGB ; <S2SV_ModStart> ; fails : free ( r ) ; free ( g ) ; <S2SV_ModEnd> free ( b\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15946\n\n```\nCWE-119 static int asn1_decode_entry ( sc_context_t * ctx , struct sc_asn1_entry * entry , const u8 * obj , size_t objlen , int depth ) { void * parm = entry -> parm ; int ( * callback_func ) ( sc_context_t * nctx , void * arg , const u8 * nobj , size_t nobjlen , int ndepth ) ; size_t * len = ( size_t * ) entry -> arg ; int r = 0 ; callback_func = parm ; sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"%*.*sdecoding<S2SV_blank>\\'%s\\',<S2SV_blank>raw<S2SV_blank>data:%s%s\\\\n\" , depth , depth , \"\" , entry -> name , sc_dump_hex ( obj , objlen > 16 ? 16 : objlen ) , objlen > 16 ? \"...\" : \"\" ) ; switch ( entry -> type ) { case SC_ASN1_STRUCT : if ( parm != NULL ) r = asn1_decode ( ctx , ( struct sc_asn1_entry * ) parm , obj , objlen , NULL , NULL , 0 , depth + 1 ) ; break ; case SC_ASN1_NULL : break ; case SC_ASN1_BOOLEAN : if ( parm != NULL ) { if ( objlen != 1 ) { sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"invalid<S2SV_blank>ASN.1<S2SV_blank>object<S2SV_blank>length:<S2SV_blank>%\" SC_FORMAT_LEN_SIZE_T \"u\\\\n\" , objlen ) ; r = SC_ERROR_INVALID_ASN1_OBJECT ; } else * ( ( int * ) parm ) = obj [ 0 ] ? 1 : 0 ; } break ; case SC_ASN1_INTEGER : case SC_ASN1_ENUMERATED : if ( parm != NULL ) { r = sc_asn1_decode_integer ( obj , objlen , ( int * ) entry -> parm ) ; sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"%*.*sdecoding<S2SV_blank>\\'%s\\'<S2SV_blank>returned<S2SV_blank>%d\\\\n\" , depth , depth , \"\" , entry -> name , * ( ( int * ) entry -> parm ) ) ; } break ; case SC_ASN1_BIT_STRING_NI : case SC_ASN1_BIT_STRING : if ( parm != NULL ) { int invert = entry -> type == SC_ASN1_BIT_STRING ? 1 : 0 ; assert ( len != NULL ) ; if ( objlen < 1 ) { r = SC_ERROR_INVALID_ASN1_OBJECT ; break ; } if ( entry -> flags & SC_ASN1_ALLOC ) { u8 * * buf = ( u8 * * ) parm ; * buf = malloc ( objlen - 1 ) ; if ( * buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; break ; } * len = objlen - 1 ; parm = * buf ; } r = decode_bit_string ( obj , objlen , ( u8 * ) parm , * len , invert ) ; if ( r >= 0 ) { * len = r ; r = 0 ; } } break ; case SC_ASN1_BIT_FIELD : if ( parm != NULL ) r = decode_bit_field ( obj , objlen , ( u8 * ) parm , * len ) ; break ; case SC_ASN1_OCTET_STRING : if ( parm != NULL ) { size_t c ; assert ( len != NULL ) ; if ( ( entry -> flags & SC_ASN1_UNSIGNED ) <S2SV_StartBug> && obj [ 0 ] == 0x00 && objlen > 1 ) { <S2SV_EndBug> objlen -- ; obj ++ ; } if ( entry -> flags & SC_ASN1_ALLOC ) { u8 * * buf = ( u8 * * ) parm ; * buf = malloc ( objlen ) ; if ( * buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; break ; } c = * len = objlen ; parm = * buf ; } else c = objlen > * len ? * len : objlen ; memcpy ( parm , obj , c ) ; * len = c ; } break ; case SC_ASN1_GENERALIZEDTIME : if ( parm != NULL ) { size_t c ; assert ( len != NULL ) ; if ( entry -> flags & SC_ASN1_ALLOC ) { u8 * * buf = ( u8 * * ) parm ; * buf = malloc ( objlen ) ; if ( * buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; break ; } c = * len = objlen ; parm = * buf ; } else c = objlen > * len ? * len : objlen ; memcpy ( parm , obj , c ) ; * len = c ; } break ; case SC_ASN1_OBJECT : if ( parm != NULL ) r = sc_asn1_decode_object_id ( obj , objlen , ( struct sc_object_id * ) parm ) ; break ; case SC_ASN1_PRINTABLESTRING : case SC_ASN1_UTF8STRING : if ( parm != NULL ) { assert ( len != NULL ) ; if ( entry -> flags & SC_ASN1_ALLOC ) { u8 * * buf = ( u8 * * ) parm ; * buf = malloc ( objlen + 1 ) ; if ( * buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; break ; } * len = objlen + 1 ; parm = * buf ; } r = sc_asn1_decode_utf8string ( obj , objlen , ( u8 * ) parm , len ) ; if ( entry -> flags & SC_ASN1_ALLOC ) { * len -= 1 ; } } break ; case SC_ASN1_PATH : if ( entry -> parm != NULL ) r = asn1_decode_path ( ctx , obj , objlen , ( sc_path_t * ) parm , depth ) ; break ; case SC_ASN1_PKCS15_ID : if ( entry -> parm != NULL ) { struct sc_pkcs15_id * id = ( struct sc_pkcs15_id * ) parm ; size_t c = objlen > sizeof ( id -> value ) ? sizeof ( id -> value ) : objlen ; memcpy ( id -> value , obj , c ) ; id -> len = c ; } break ; case SC_ASN1_PKCS15_OBJECT : if ( entry -> parm != NULL ) r = asn1_decode_p15_object ( ctx , obj , objlen , ( struct sc_asn1_pkcs15_object * ) parm , depth ) ; break ; case SC_ASN1_ALGORITHM_ID : if ( entry -> parm != NULL ) r = sc_asn1_decode_algorithm_id ( ctx , obj , objlen , ( struct sc_algorithm_id * ) parm , depth ) ; break ; case SC_ASN1_SE_INFO : if ( entry -> parm != NULL ) r = asn1_decode_se_info ( ctx , obj , objlen , ( sc_pkcs15_sec_env_info_t * * * ) entry -> parm , len , depth ) ; break ; case SC_ASN1_CALLBACK : if ( entry -> parm != NULL ) r = callback_func ( ctx , entry -> arg , obj , objlen , depth ) ; break ; default : sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"invalid<S2SV_blank>ASN.1<S2SV_blank>type:<S2SV_blank>%d\\\\n\" , entry -> type ) ; return SC_ERROR_INVALID_ASN1_OBJECT ; } if ( r ) { sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"decoding<S2SV_blank>of<S2SV_blank>ASN.1<S2SV_blank>object<S2SV_blank>\\'%s\\'<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , entry -> name , sc_strerror ( r ) ) ; return r ; } entry -> flags |= SC_ASN1_PRESENT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SC_ASN1_UNSIGNED ) && objlen > 1 && <S2SV_ModStart> ] == 0x00 <S2SV_ModEnd> ) { objlen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static struct page * follow_pmd_mask ( struct vm_area_struct * vma , unsigned long address , pud_t * pudp , unsigned int flags , struct follow_page_context * ctx ) { pmd_t * pmd , pmdval ; spinlock_t * ptl ; struct page * page ; struct mm_struct * mm = vma -> vm_mm ; pmd = pmd_offset ( pudp , address ) ; pmdval = READ_ONCE ( * pmd ) ; if ( pmd_none ( pmdval ) ) return no_page_table ( vma , flags ) ; if ( pmd_huge ( pmdval ) && vma -> vm_flags & VM_HUGETLB ) { page = follow_huge_pmd ( mm , address , pmd , flags ) ; if ( page ) return page ; return no_page_table ( vma , flags ) ; } if ( is_hugepd ( __hugepd ( pmd_val ( pmdval ) ) ) ) { page = follow_huge_pd ( vma , address , __hugepd ( pmd_val ( pmdval ) ) , flags , PMD_SHIFT ) ; if ( page ) return page ; return no_page_table ( vma , flags ) ; } retry : if ( ! pmd_present ( pmdval ) ) { if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) return no_page_table ( vma , flags ) ; VM_BUG_ON ( thp_migration_supported ( ) && ! is_pmd_migration_entry ( pmdval ) ) ; if ( is_pmd_migration_entry ( pmdval ) ) pmd_migration_entry_wait ( mm , pmd ) ; pmdval = READ_ONCE ( * pmd ) ; if ( pmd_none ( pmdval ) ) return no_page_table ( vma , flags ) ; goto retry ; } if ( pmd_devmap ( pmdval ) ) { ptl = pmd_lock ( mm , pmd ) ; page = follow_devmap_pmd ( vma , address , pmd , flags , & ctx -> pgmap ) ; spin_unlock ( ptl ) ; if ( page ) return page ; } if ( likely ( ! pmd_trans_huge ( pmdval ) ) ) return follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; if ( ( flags & FOLL_NUMA ) && pmd_protnone ( pmdval ) ) return no_page_table ( vma , flags ) ; retry_locked : ptl = pmd_lock ( mm , pmd ) ; if ( unlikely ( pmd_none ( * pmd ) ) ) { spin_unlock ( ptl ) ; return no_page_table ( vma , flags ) ; } if ( unlikely ( ! pmd_present ( * pmd ) ) ) { spin_unlock ( ptl ) ; if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) return no_page_table ( vma , flags ) ; pmd_migration_entry_wait ( mm , pmd ) ; goto retry_locked ; } if ( unlikely ( ! pmd_trans_huge ( * pmd ) ) ) { spin_unlock ( ptl ) ; return follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; } if ( flags & FOLL_SPLIT ) { int ret ; page = pmd_page ( * pmd ) ; if ( is_huge_zero_page ( page ) ) { spin_unlock ( ptl ) ; ret = 0 ; split_huge_pmd ( vma , pmd , address ) ; if ( pmd_trans_unstable ( pmd ) ) ret = - EBUSY ; } else { <S2SV_StartBug> get_page ( page ) ; <S2SV_EndBug> spin_unlock ( ptl ) ; lock_page ( page ) ; ret = split_huge_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; if ( pmd_none ( * pmd ) ) return no_page_table ( vma , flags ) ; } return ret ? ERR_PTR ( ret ) : follow_page_pte ( vma , address , pmd , flags , & ctx -> pgmap ) ; } page = follow_trans_huge_pmd ( vma , address , pmd , flags ) ; spin_unlock ( ptl ) ; ctx -> page_mask = HPAGE_PMD_NR - 1 ; return page ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { if ( unlikely ( ! try_get_page ( page ) ) ) { spin_unlock ( ptl ) ; return ERR_PTR ( - ENOMEM ) ; } <S2SV_ModEnd> spin_unlock ( ptl\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2127\n\n```\nCWE-119 void pid_ns_release_proc ( struct pid_namespace * ns ) { <S2SV_StartBug> mntput ( ns -> proc_mnt ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ns ) { kern_unmount <S2SV_ModEnd> ( ns ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4565\n\n```\nCWE-264 static ssize_t ib_uverbs_write ( struct file * filp , const char __user * buf , size_t count , loff_t * pos ) { struct ib_uverbs_file * file = filp -> private_data ; struct ib_device * ib_dev ; struct ib_uverbs_cmd_hdr hdr ; __u32 command ; __u32 flags ; int srcu_key ; ssize_t ret ; <S2SV_StartBug> if ( count < sizeof hdr ) <S2SV_EndBug> return - EINVAL ; if ( copy_from_user ( & hdr , buf , sizeof hdr ) ) return - EFAULT ; srcu_key = srcu_read_lock ( & file -> device -> disassociate_srcu ) ; ib_dev = srcu_dereference ( file -> device -> ib_dev , & file -> device -> disassociate_srcu ) ; if ( ! ib_dev ) { ret = - EIO ; goto out ; } if ( hdr . command & ~ ( __u32 ) ( IB_USER_VERBS_CMD_FLAGS_MASK | IB_USER_VERBS_CMD_COMMAND_MASK ) ) { ret = - EINVAL ; goto out ; } command = hdr . command & IB_USER_VERBS_CMD_COMMAND_MASK ; if ( verify_command_mask ( ib_dev , command ) ) { ret = - EOPNOTSUPP ; goto out ; } if ( ! file -> ucontext && command != IB_USER_VERBS_CMD_GET_CONTEXT ) { ret = - EINVAL ; goto out ; } flags = ( hdr . command & IB_USER_VERBS_CMD_FLAGS_MASK ) >> IB_USER_VERBS_CMD_FLAGS_SHIFT ; if ( ! flags ) { if ( command >= ARRAY_SIZE ( uverbs_cmd_table ) || ! uverbs_cmd_table [ command ] ) { ret = - EINVAL ; goto out ; } if ( hdr . in_words * 4 != count ) { ret = - EINVAL ; goto out ; } ret = uverbs_cmd_table [ command ] ( file , ib_dev , buf + sizeof ( hdr ) , hdr . in_words * 4 , hdr . out_words * 4 ) ; } else if ( flags == IB_USER_VERBS_CMD_FLAG_EXTENDED ) { struct ib_uverbs_ex_cmd_hdr ex_hdr ; struct ib_udata ucore ; struct ib_udata uhw ; size_t written_count = count ; if ( command >= ARRAY_SIZE ( uverbs_ex_cmd_table ) || ! uverbs_ex_cmd_table [ command ] ) { ret = - ENOSYS ; goto out ; } if ( ! file -> ucontext ) { ret = - EINVAL ; goto out ; } if ( count < ( sizeof ( hdr ) + sizeof ( ex_hdr ) ) ) { ret = - EINVAL ; goto out ; } if ( copy_from_user ( & ex_hdr , buf + sizeof ( hdr ) , sizeof ( ex_hdr ) ) ) { ret = - EFAULT ; goto out ; } count -= sizeof ( hdr ) + sizeof ( ex_hdr ) ; buf += sizeof ( hdr ) + sizeof ( ex_hdr ) ; if ( ( hdr . in_words + ex_hdr . provider_in_words ) * 8 != count ) { ret = - EINVAL ; goto out ; } if ( ex_hdr . cmd_hdr_reserved ) { ret = - EINVAL ; goto out ; } if ( ex_hdr . response ) { if ( ! hdr . out_words && ! ex_hdr . provider_out_words ) { ret = - EINVAL ; goto out ; } if ( ! access_ok ( VERIFY_WRITE , ( void __user * ) ( unsigned long ) ex_hdr . response , ( hdr . out_words + ex_hdr . provider_out_words ) * 8 ) ) { ret = - EFAULT ; goto out ; } } else { if ( hdr . out_words || ex_hdr . provider_out_words ) { ret = - EINVAL ; goto out ; } } INIT_UDATA_BUF_OR_NULL ( & ucore , buf , ( unsigned long ) ex_hdr . response , hdr . in_words * 8 , hdr . out_words * 8 ) ; INIT_UDATA_BUF_OR_NULL ( & uhw , buf + ucore . inlen , ( unsigned long ) ex_hdr . response + ucore . outlen , ex_hdr . provider_in_words * 8 , ex_hdr . provider_out_words * 8 ) ; ret = uverbs_ex_cmd_table [ command ] ( file , ib_dev , & ucore , & uhw ) ; if ( ! ret ) ret = written_count ; } else { ret = - ENOSYS ; } out : srcu_read_unlock ( & file -> device -> disassociate_srcu , srcu_key ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( WARN_ON_ONCE ( ! ib_safe_file_access ( filp ) ) ) return - EACCES ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9537\n\n```\nCWE-119 static int reverseSamplesBytes ( uint16 spp , uint16 bps , uint32 width , uint8 * src , uint8 * dst ) { int i ; uint32 col , bytes_per_pixel , col_offset ; uint8 bytebuff1 ; unsigned char swapbuff [ 32 ] ; if ( ( src == NULL ) || ( dst == NULL ) ) { TIFFError ( \"reverseSamplesBytes\" , \"Invalid<S2SV_blank>input<S2SV_blank>or<S2SV_blank>output<S2SV_blank>buffer\" ) ; return ( 1 ) ; } bytes_per_pixel = ( ( bps * spp ) + 7 ) / 8 ; <S2SV_StartBug> switch ( bps / 8 ) <S2SV_EndBug> { case 8 : case 4 : case 3 : case 2 : for ( col = 0 ; col < ( width / 2 ) ; col ++ ) { col_offset = col * bytes_per_pixel ; _TIFFmemcpy ( swapbuff , src + col_offset , bytes_per_pixel ) ; _TIFFmemcpy ( src + col_offset , dst - col_offset - bytes_per_pixel , bytes_per_pixel ) ; _TIFFmemcpy ( dst - col_offset - bytes_per_pixel , swapbuff , bytes_per_pixel ) ; } break ; case 1 : for ( col = 0 ; col < ( width / 2 ) ; col ++ ) { for ( i = 0 ; i < spp ; i ++ ) { bytebuff1 = * src ; * src ++ = * ( dst - spp + i ) ; * ( dst - spp + i ) = bytebuff1 ; } dst -= spp ; } break ; default : TIFFError ( \"reverseSamplesBytes\" , \"Unsupported<S2SV_blank>bit<S2SV_blank>depth<S2SV_blank>%d\" , bps ) ; return ( 1 ) ; } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> / 8 ; if ( bytes_per_pixel > sizeof ( swapbuff ) ) { TIFFError ( \"reverseSamplesBytes\" , \"bytes_per_pixel<S2SV_blank>too<S2SV_blank>large\" ) ; return ( 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void encode_frame ( struct stream_state * stream , struct VpxEncoderConfig * global , struct vpx_image * img , unsigned int frames_in ) { vpx_codec_pts_t frame_start , next_frame_start ; struct vpx_codec_enc_cfg * cfg = & stream -> config . cfg ; struct vpx_usec_timer timer ; frame_start = ( cfg -> g_timebase . den * ( int64_t ) ( frames_in - 1 ) * global -> framerate . den ) / cfg -> g_timebase . num / global -> framerate . num ; next_frame_start = ( cfg -> g_timebase . den * ( int64_t ) ( frames_in ) * global -> framerate . den ) / cfg -> g_timebase . num / global -> framerate . num ; <S2SV_StartBug> if ( img && ( img -> d_w != cfg -> g_w || img -> d_h != cfg -> g_h ) ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! stream -> img ) <S2SV_EndBug> <S2SV_StartBug> stream -> img = vpx_img_alloc ( NULL , VPX_IMG_FMT_I420 , <S2SV_EndBug> cfg -> g_w , cfg -> g_h , 16 ) ; I420Scale ( img -> planes [ VPX_PLANE_Y ] , img -> stride [ VPX_PLANE_Y ] , img -> planes [ VPX_PLANE_U ] , img -> stride [ VPX_PLANE_U ] , img -> planes [ VPX_PLANE_V ] , img -> stride [ VPX_PLANE_V ] , img -> d_w , img -> d_h , stream -> img -> planes [ VPX_PLANE_Y ] , stream -> img -> stride [ VPX_PLANE_Y ] , stream -> img -> planes [ VPX_PLANE_U ] , stream -> img -> stride [ VPX_PLANE_U ] , stream -> img -> planes [ VPX_PLANE_V ] , stream -> img -> stride [ VPX_PLANE_V ] , stream -> img -> d_w , stream -> img -> d_h , kFilterBox ) ; <S2SV_StartBug> img = stream -> img ; <S2SV_EndBug> } vpx_usec_timer_start ( & timer ) ; vpx_codec_encode ( & stream -> encoder , img , frame_start , ( unsigned long ) ( next_frame_start - frame_start ) , 0 , global -> deadline ) ; vpx_usec_timer_mark ( & timer ) ; stream -> cx_time += vpx_usec_timer_elapsed ( & timer ) ; ctx_exit_on_error ( & stream -> encoder , \"Stream<S2SV_blank>%d:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame\" , stream -> index ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . num ; # if CONFIG_VP9_HIGHBITDEPTH if ( img ) { if ( ( img -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) <S2SV_ModEnd> && ( img <S2SV_ModStart> { if ( img -> fmt != VPX_IMG_FMT_I42016 ) { fprintf ( stderr , \"%s<S2SV_blank>can<S2SV_blank>only<S2SV_blank>scale<S2SV_blank>4:2:0<S2SV_blank>inputs\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; } # if CONFIG_LIBYUV if ( <S2SV_ModStart> -> img ) { <S2SV_ModStart> ( NULL , VPX_IMG_FMT_I42016 , cfg -> g_w , cfg -> g_h , 16 ) ; } I420Scale_16 ( ( uint16 * ) img -> planes [ VPX_PLANE_Y ] , img -> stride [ VPX_PLANE_Y ] / 2 , ( uint16 * ) img -> planes [ VPX_PLANE_U ] , img -> stride [ VPX_PLANE_U ] / 2 , ( uint16 * ) img -> planes [ VPX_PLANE_V ] , img -> stride [ VPX_PLANE_V ] / 2 , img -> d_w , img -> d_h , ( uint16 * ) stream -> img -> planes [ VPX_PLANE_Y ] , stream -> img -> stride [ VPX_PLANE_Y ] / 2 , ( uint16 * ) stream -> img -> planes [ VPX_PLANE_U ] , stream -> img -> stride [ VPX_PLANE_U ] / 2 , ( uint16 * ) stream -> img -> planes [ VPX_PLANE_V ] , stream -> img -> stride [ VPX_PLANE_V ] / 2 , stream -> img -> d_w , stream -> img -> d_h , kFilterBox ) ; img = stream -> img ; # else stream -> encoder . err = 1 ; ctx_exit_on_error ( & stream -> encoder , \"Stream<S2SV_blank>%d:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame.\\\\n\" \"Scaling<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>this<S2SV_blank>configuration.<S2SV_blank>\\\\n\" \"To<S2SV_blank>enable,<S2SV_blank>configure<S2SV_blank>with<S2SV_blank>--enable-libyuv\\\\n\" , stream -> index ) ; # endif } } # endif if ( img && ( img -> d_w != cfg -> g_w || img -> d_h != cfg -> g_h ) ) { if ( img -> fmt != VPX_IMG_FMT_I420 && img -> fmt != VPX_IMG_FMT_YV12 ) { fprintf ( stderr , \"%s<S2SV_blank>can<S2SV_blank>only<S2SV_blank>scale<S2SV_blank>4:2:0<S2SV_blank>8bpp<S2SV_blank>inputs\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; } # if CONFIG_LIBYUV if ( ! stream -> img ) stream -> img = vpx_img_alloc ( NULL , VPX_IMG_FMT_I420 <S2SV_ModEnd> , cfg -> <S2SV_ModStart> -> img ; # else stream -> encoder . err = 1 ; ctx_exit_on_error ( & stream -> encoder , \"Stream<S2SV_blank>%d:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame.\\\\n\" \"Scaling<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>this<S2SV_blank>configuration.<S2SV_blank>\\\\n\" \"To<S2SV_blank>enable,<S2SV_blank>configure<S2SV_blank>with<S2SV_blank>--enable-libyuv\\\\n\" , stream -> index ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11940\n\n```\nCWE-125 static u_int16_t concat_hash_string ( struct ndpi_packet_struct * packet , char * buf , u_int8_t client_hash ) { u_int16_t offset = 22 , buf_out_len = 0 ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; u_int32_t len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; offset += 4 ; if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( buf , ( const char * ) & packet -> payload [ offset ] , buf_out_len = len ) ; buf [ buf_out_len ++ ] = ';' ; offset += len ; <S2SV_StartBug> len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_EndBug> <S2SV_StartBug> offset += 4 + len ; <S2SV_EndBug> len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; if ( client_hash ) { offset += 4 ; if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; buf [ buf_out_len ++ ] = ';' ; offset += len ; } else offset += 4 + len ; <S2SV_StartBug> len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_EndBug> if ( ! client_hash ) { offset += 4 ; if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; buf [ buf_out_len ++ ] = ';' ; offset += len ; } else offset += 4 + len ; <S2SV_StartBug> len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_EndBug> if ( client_hash ) { offset += 4 ; if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; buf [ buf_out_len ++ ] = ';' ; offset += len ; } else offset += 4 + len ; <S2SV_StartBug> len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_EndBug> if ( ! client_hash ) { offset += 4 ; if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; buf [ buf_out_len ++ ] = ';' ; offset += len ; } else offset += 4 + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; if ( client_hash ) { offset += 4 ; if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; offset += len ; } else <S2SV_StartBug> offset += 4 + len ; <S2SV_EndBug> len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; if ( ! client_hash ) { offset += 4 ; if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; offset += len ; } else offset += 4 + len ; # ifdef SSH_DEBUG printf ( \"[SSH]<S2SV_blank>%s\\\\n\" , buf ) ; # endif return ( buf_out_len ) ; invalid_payload : # ifdef SSH_DEBUG printf ( \"[SSH]<S2SV_blank>Invalid<S2SV_blank>packet<S2SV_blank>payload\\\\n\" ) ; # endif return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; <S2SV_ModStart> 4 + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload <S2SV_ModStart> + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; <S2SV_ModStart> + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; <S2SV_ModStart> + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; <S2SV_ModStart> 4 + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9904\n\n```\nCWE-000 static int snd_compress_check_input ( struct snd_compr_params * params ) { if ( params -> buffer . fragment_size == 0 || <S2SV_StartBug> params -> buffer . fragments > SIZE_MAX / params -> buffer . fragment_size ) <S2SV_EndBug> return - EINVAL ; if ( params -> codec . id == 0 || params -> codec . id > SND_AUDIOCODEC_MAX ) return - EINVAL ; if ( params -> codec . ch_in == 0 || params -> codec . ch_out == 0 ) return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . fragments > INT_MAX <S2SV_ModEnd> / params ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 static void l2tp_eth_dev_setup ( struct net_device * dev ) { ether_setup ( dev ) ; <S2SV_StartBug> dev -> netdev_ops = & l2tp_eth_netdev_ops ; <S2SV_EndBug> dev -> destructor = free_netdev ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8063\n\n```\nCWE-119 static int cxusb_ctrl_msg ( struct dvb_usb_device * d , u8 cmd , u8 * wbuf , int wlen , u8 * rbuf , int rlen ) { struct cxusb_state * st = d -> priv ; <S2SV_StartBug> int ret , wo ; <S2SV_EndBug> if ( 1 + wlen > MAX_XFER_SIZE ) { warn ( \"i2c<S2SV_blank>wr:<S2SV_blank>len=%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>big!\\\\n\" , wlen ) ; return - EOPNOTSUPP ; } <S2SV_StartBug> wo = ( rbuf == NULL || rlen == 0 ) ; <S2SV_EndBug> mutex_lock ( & d -> data_mutex ) ; st -> data [ 0 ] = cmd ; memcpy ( & st -> data [ 1 ] , wbuf , wlen ) ; <S2SV_StartBug> if ( wo ) <S2SV_EndBug> ret = dvb_usb_generic_write ( d , st -> data , 1 + wlen ) ; else ret = dvb_usb_generic_rw ( d , st -> data , 1 + wlen , <S2SV_StartBug> rbuf , rlen , 0 ) ; <S2SV_EndBug> mutex_unlock ( & d -> data_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int ret <S2SV_ModEnd> ; if ( <S2SV_ModStart> EOPNOTSUPP ; } if ( rlen > MAX_XFER_SIZE ) { warn ( \"i2c<S2SV_blank>rd:<S2SV_blank>len=%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>big!\\\\n\" , rlen ) ; return - EOPNOTSUPP ; } <S2SV_ModEnd> mutex_lock ( & <S2SV_ModStart> wlen ) ; <S2SV_ModEnd> ret = dvb_usb_generic_rw <S2SV_ModStart> + wlen , st -> data <S2SV_ModEnd> , rlen , <S2SV_ModStart> rlen , 0 ) ; if ( ! ret && rbuf && rlen ) memcpy ( rbuf , st -> data , rlen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4127\n\n```\nCWE-264 static int multipath_ioctl ( struct dm_target * ti , unsigned int cmd , unsigned long arg ) { struct multipath * m = ( struct multipath * ) ti -> private ; struct block_device * bdev = NULL ; fmode_t mode = 0 ; unsigned long flags ; int r = 0 ; spin_lock_irqsave ( & m -> lock , flags ) ; if ( ! m -> current_pgpath ) __choose_pgpath ( m , 0 ) ; if ( m -> current_pgpath ) { bdev = m -> current_pgpath -> path . dev -> bdev ; mode = m -> current_pgpath -> path . dev -> mode ; } if ( m -> queue_io ) r = - EAGAIN ; else if ( ! bdev ) r = - EIO ; spin_unlock_irqrestore ( & m -> lock , flags ) ; <S2SV_StartBug> return r ? : __blkdev_driver_ioctl ( bdev , mode , cmd , arg ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flags ) ; if ( ! r && ti -> len != i_size_read ( bdev -> bd_inode ) >> SECTOR_SHIFT ) r = scsi_verify_blk_ioctl ( NULL , cmd ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6418\n\n```\nCWE-125 void messageAddArgument ( message * m , const char * arg ) { int offset ; char * p ; assert ( m != NULL ) ; if ( arg == NULL ) return ; while ( isspace ( * arg ) ) arg ++ ; if ( * arg == '\\\\0' ) return ; cli_dbgmsg ( \"messageAddArgument,<S2SV_blank>arg=\\'%s\\'\\\\n\" , arg ) ; if ( ! usefulArg ( arg ) ) return ; for ( offset = 0 ; offset < m -> numberOfArguments ; offset ++ ) if ( m -> mimeArguments [ offset ] == NULL ) break ; else if ( strcasecmp ( arg , m -> mimeArguments [ offset ] ) == 0 ) return ; if ( offset == m -> numberOfArguments ) { char * * q ; m -> numberOfArguments ++ ; q = ( char * * ) cli_realloc ( m -> mimeArguments , m -> numberOfArguments * sizeof ( char * ) ) ; if ( q == NULL ) { m -> numberOfArguments -- ; return ; } m -> mimeArguments = q ; } p = m -> mimeArguments [ offset ] = rfc2231 ( arg ) ; if ( ! p ) { cli_dbgmsg ( \"messageAddArgument,<S2SV_blank>error<S2SV_blank>from<S2SV_blank>rfc2231()\\\\n\" ) ; return ; } if ( strchr ( p , '=' ) == NULL ) { if ( strncmp ( p , \"filename\" , 8 ) == 0 ) { <S2SV_StartBug> cli_dbgmsg ( \"Possible<S2SV_blank>data<S2SV_blank>corruption<S2SV_blank>fixed\\\\n\" ) ; <S2SV_EndBug> p [ 8 ] = '=' ; } else { <S2SV_StartBug> if ( * p ) <S2SV_EndBug> cli_dbgmsg ( \"messageAddArgument,<S2SV_blank>\\'%s\\'<S2SV_blank>contains<S2SV_blank>no<S2SV_blank>\\'=\\'\\\\n\" , p ) ; free ( m -> mimeArguments [ offset ] ) ; m -> mimeArguments [ offset ] = NULL ; return ; } } if ( ( strncasecmp ( p , \"filename=\" , 9 ) == 0 ) || ( strncasecmp ( p , \"name=\" , 5 ) == 0 ) ) if ( messageGetMimeType ( m ) == NOMIME ) { cli_dbgmsg ( \"Force<S2SV_blank>mime<S2SV_blank>encoding<S2SV_blank>to<S2SV_blank>application\\\\n\" ) ; messageSetMimeType ( m , \"application\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( strlen ( p ) > 8 ) { <S2SV_ModStart> } else { cli_dbgmsg ( \"Possible<S2SV_blank>data<S2SV_blank>corruption<S2SV_blank>not<S2SV_blank>fixed\\\\n\" ) ; } } else {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6689\n\n```\nCWE-284 static int netlink_sendmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct sock * sk = sock -> sk ; struct netlink_sock * nlk = nlk_sk ( sk ) ; struct sockaddr_nl * addr = msg -> msg_name ; u32 dst_pid ; u32 dst_group ; struct sk_buff * skb ; int err ; struct scm_cookie scm ; if ( msg -> msg_flags & MSG_OOB ) return - EOPNOTSUPP ; if ( NULL == siocb -> scm ) siocb -> scm = & scm ; err = scm_send ( sock , msg , siocb -> scm , true ) ; if ( err < 0 ) return err ; if ( msg -> msg_namelen ) { err = - EINVAL ; if ( addr -> nl_family != AF_NETLINK ) goto out ; dst_pid = addr -> nl_pid ; dst_group = ffs ( addr -> nl_groups ) ; err = - EPERM ; <S2SV_StartBug> if ( dst_group && ! netlink_capable ( sock , NL_NONROOT_SEND ) ) <S2SV_EndBug> goto out ; } else { dst_pid = nlk -> dst_pid ; dst_group = nlk -> dst_group ; } if ( ! nlk -> pid ) { err = netlink_autobind ( sock ) ; if ( err ) goto out ; } err = - EMSGSIZE ; if ( len > sk -> sk_sndbuf - 32 ) goto out ; err = - ENOBUFS ; skb = alloc_skb ( len , GFP_KERNEL ) ; if ( skb == NULL ) goto out ; NETLINK_CB ( skb ) . pid = nlk -> pid ; NETLINK_CB ( skb ) . dst_group = dst_group ; memcpy ( NETLINK_CREDS ( skb ) , & siocb -> scm -> creds , sizeof ( struct ucred ) ) ; err = - EFAULT ; if ( memcpy_fromiovec ( skb_put ( skb , len ) , msg -> msg_iov , len ) ) { kfree_skb ( skb ) ; goto out ; } err = security_netlink_send ( sk , skb ) ; if ( err ) { kfree_skb ( skb ) ; goto out ; } if ( dst_group ) { atomic_inc ( & skb -> users ) ; netlink_broadcast ( sk , skb , dst_pid , dst_group , GFP_KERNEL ) ; } err = netlink_unicast ( sk , skb , dst_pid , msg -> msg_flags & MSG_DONTWAIT ) ; out : scm_destroy ( siocb -> scm ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( dst_group || dst_pid ) <S2SV_ModEnd> && ! netlink_capable\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int hfsplus_set_posix_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int err ; char * xattr_name ; size_t size = 0 ; char * value = NULL ; hfs_dbg ( ACL_MOD , \"[%s]:<S2SV_blank>ino<S2SV_blank>%lu\\\\n\" , __func__ , inode -> i_ino ) ; switch ( type ) { case ACL_TYPE_ACCESS : xattr_name = XATTR_NAME_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> err = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( err < 0 ) return err ; } err = 0 ; break ; case ACL_TYPE_DEFAULT : xattr_name = XATTR_NAME_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { size = posix_acl_xattr_size ( acl -> a_count ) ; if ( unlikely ( size > HFSPLUS_MAX_INLINE_DATA_SIZE ) ) return - ENOMEM ; value = ( char * ) hfsplus_alloc_attr_entry ( ) ; if ( unlikely ( ! value ) ) return - ENOMEM ; err = posix_acl_to_xattr ( & init_user_ns , acl , value , size ) ; if ( unlikely ( err < 0 ) ) goto end_set_acl ; } err = __hfsplus_setxattr ( inode , xattr_name , value , size , 0 ) ; end_set_acl : hfsplus_destroy_attr_entry ( ( hfsplus_attr_entry * ) value ) ; if ( ! err ) set_cached_acl ( inode , type , acl ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { err = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( err <S2SV_ModEnd> ) return err\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0816\n\n```\nCWE-200 static int Downmix_Command ( effect_handle_t self , uint32_t cmdCode , uint32_t cmdSize , void * pCmdData , uint32_t * replySize , void * pReplyData ) { downmix_module_t * pDwmModule = ( downmix_module_t * ) self ; downmix_object_t * pDownmixer ; if ( pDwmModule == NULL || pDwmModule -> context . state == DOWNMIX_STATE_UNINITIALIZED ) { return - EINVAL ; } pDownmixer = ( downmix_object_t * ) & pDwmModule -> context ; ALOGV ( \"Downmix_Command<S2SV_blank>command<S2SV_blank>%\" PRIu32 \"<S2SV_blank>cmdSize<S2SV_blank>%\" PRIu32 , cmdCode , cmdSize ) ; switch ( cmdCode ) { case EFFECT_CMD_INIT : if ( pReplyData == NULL || replySize == NULL || * replySize != sizeof ( int ) ) { return - EINVAL ; } * ( int * ) pReplyData = Downmix_Init ( pDwmModule ) ; break ; case EFFECT_CMD_SET_CONFIG : if ( pCmdData == NULL || cmdSize != sizeof ( effect_config_t ) || pReplyData == NULL || replySize == NULL || * replySize != sizeof ( int ) ) { return - EINVAL ; } * ( int * ) pReplyData = Downmix_Configure ( pDwmModule , ( effect_config_t * ) pCmdData , false ) ; break ; case EFFECT_CMD_RESET : Downmix_Reset ( pDownmixer , false ) ; break ; case EFFECT_CMD_GET_PARAM : ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_GET_PARAM<S2SV_blank>pCmdData<S2SV_blank>%p,<S2SV_blank>*replySize<S2SV_blank>%\" PRIu32 \",<S2SV_blank>pReplyData:<S2SV_blank>%p\" , pCmdData , * replySize , pReplyData ) ; if ( pCmdData == NULL || cmdSize < ( int ) ( sizeof ( effect_param_t ) + sizeof ( int32_t ) ) || pReplyData == NULL || replySize == NULL || * replySize < ( int ) sizeof ( effect_param_t ) + 2 * sizeof ( int32_t ) ) { return - EINVAL ; } effect_param_t * rep = ( effect_param_t * ) pReplyData ; memcpy ( pReplyData , pCmdData , sizeof ( effect_param_t ) + sizeof ( int32_t ) ) ; ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_GET_PARAM<S2SV_blank>param<S2SV_blank>%\" PRId32 \",<S2SV_blank>replySize<S2SV_blank>%\" PRIu32 , * ( int32_t * ) rep -> data , rep -> vsize ) ; rep -> status = Downmix_getParameter ( pDownmixer , * ( int32_t * ) rep -> data , & rep -> vsize , rep -> data + sizeof ( int32_t ) ) ; * replySize = sizeof ( effect_param_t ) + sizeof ( int32_t ) + rep -> vsize ; break ; case EFFECT_CMD_SET_PARAM : ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_SET_PARAM<S2SV_blank>cmdSize<S2SV_blank>%d<S2SV_blank>pCmdData<S2SV_blank>%p,<S2SV_blank>*replySize<S2SV_blank>%\" PRIu32 \",<S2SV_blank>pReplyData<S2SV_blank>%p\" , cmdSize , pCmdData , * replySize , pReplyData ) ; if ( pCmdData == NULL || ( cmdSize < ( int ) ( sizeof ( effect_param_t ) + sizeof ( int32_t ) ) ) || pReplyData == NULL || replySize == NULL || * replySize != ( int ) sizeof ( int32_t ) ) { return - EINVAL ; } effect_param_t * cmd = ( effect_param_t * ) pCmdData ; <S2SV_StartBug> * ( int * ) pReplyData = Downmix_setParameter ( pDownmixer , * ( int32_t * ) cmd -> data , <S2SV_EndBug> cmd -> vsize , cmd -> data + sizeof ( int32_t ) ) ; break ; case EFFECT_CMD_SET_PARAM_DEFERRED : ALOGW ( \"Downmix_Command<S2SV_blank>command<S2SV_blank>EFFECT_CMD_SET_PARAM_DEFERRED<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>FIXME\" ) ; break ; case EFFECT_CMD_SET_PARAM_COMMIT : ALOGW ( \"Downmix_Command<S2SV_blank>command<S2SV_blank>EFFECT_CMD_SET_PARAM_COMMIT<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>FIXME\" ) ; break ; case EFFECT_CMD_ENABLE : if ( pReplyData == NULL || replySize == NULL || * replySize != sizeof ( int ) ) { return - EINVAL ; } if ( pDownmixer -> state != DOWNMIX_STATE_INITIALIZED ) { return - ENOSYS ; } pDownmixer -> state = DOWNMIX_STATE_ACTIVE ; ALOGV ( \"EFFECT_CMD_ENABLE()<S2SV_blank>OK\" ) ; * ( int * ) pReplyData = 0 ; break ; case EFFECT_CMD_DISABLE : if ( pReplyData == NULL || replySize == NULL || * replySize != sizeof ( int ) ) { return - EINVAL ; } if ( pDownmixer -> state != DOWNMIX_STATE_ACTIVE ) { return - ENOSYS ; } pDownmixer -> state = DOWNMIX_STATE_INITIALIZED ; ALOGV ( \"EFFECT_CMD_DISABLE()<S2SV_blank>OK\" ) ; * ( int * ) pReplyData = 0 ; break ; case EFFECT_CMD_SET_DEVICE : if ( pCmdData == NULL || cmdSize != ( int ) sizeof ( uint32_t ) ) { return - EINVAL ; } ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_SET_DEVICE:<S2SV_blank>0x%08\" PRIx32 , * ( uint32_t * ) pCmdData ) ; break ; case EFFECT_CMD_SET_VOLUME : { if ( pCmdData == NULL || cmdSize != ( int ) sizeof ( uint32_t ) * 2 ) { return - EINVAL ; } ALOGW ( \"Downmix_Command<S2SV_blank>command<S2SV_blank>EFFECT_CMD_SET_VOLUME<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>FIXME\" ) ; float left = ( float ) ( * ( uint32_t * ) pCmdData ) / ( 1 << 24 ) ; float right = ( float ) ( * ( ( uint32_t * ) pCmdData + 1 ) ) / ( 1 << 24 ) ; ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_SET_VOLUME:<S2SV_blank>left<S2SV_blank>%f,<S2SV_blank>right<S2SV_blank>%f<S2SV_blank>\" , left , right ) ; break ; } case EFFECT_CMD_SET_AUDIO_MODE : if ( pCmdData == NULL || cmdSize != ( int ) sizeof ( uint32_t ) ) { return - EINVAL ; } ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_SET_AUDIO_MODE:<S2SV_blank>%\" PRIu32 , * ( uint32_t * ) pCmdData ) ; break ; case EFFECT_CMD_SET_CONFIG_REVERSE : case EFFECT_CMD_SET_INPUT_DEVICE : break ; default : ALOGW ( \"Downmix_Command<S2SV_blank>invalid<S2SV_blank>command<S2SV_blank>%\" PRIu32 , cmdCode ) ; return - EINVAL ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) pCmdData ; if ( cmd -> psize != sizeof ( int32_t ) ) { android_errorWriteLog ( 0x534e4554 , \"63662938\" ) ; return - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void choose_intra_uv_mode ( VP9_COMP * cpi , PICK_MODE_CONTEXT * ctx , <S2SV_EndBug> BLOCK_SIZE bsize , TX_SIZE max_tx_size , int * rate_uv , int * rate_uv_tokenonly , int64_t * dist_uv , int * skip_uv , <S2SV_StartBug> MB_PREDICTION_MODE * mode_uv ) { <S2SV_EndBug> <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> if ( cpi -> sf . use_uv_intra_rd_estimate ) { rd_sbuv_dcpred ( cpi , x , rate_uv , rate_uv_tokenonly , dist_uv , skip_uv , bsize < BLOCK_8X8 ? BLOCK_8X8 : bsize ) ; } else { rd_pick_intra_sbuv_mode ( cpi , x , ctx , rate_uv , rate_uv_tokenonly , dist_uv , skip_uv , bsize < BLOCK_8X8 ? BLOCK_8X8 : bsize , max_tx_size ) ; } * mode_uv = x -> e_mbd . mi [ 0 ] -> mbmi . uv_mode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , MACROBLOCK * const x , <S2SV_ModStart> * skip_uv , PREDICTION_MODE <S2SV_ModEnd> * mode_uv ) <S2SV_ModStart> mode_uv ) { <S2SV_ModEnd> if ( cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> void nfs4_close_state ( struct path * path , struct nfs4_state * state , mode_t mode ) <S2SV_EndBug> { <S2SV_StartBug> __nfs4_close ( path , state , mode , 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * state , fmode_t fmode <S2SV_ModEnd> ) { __nfs4_close <S2SV_ModStart> , state , fmode <S2SV_ModEnd> , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10044\n\n```\nCWE-264 static struct dentry * aio_mount ( struct file_system_type * fs_type , int flags , const char * dev_name , void * data ) { static const struct dentry_operations ops = { . d_dname = simple_dname , } ; <S2SV_StartBug> return mount_pseudo ( fs_type , \"aio:\" , NULL , & ops , AIO_RING_MAGIC ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , } ; struct dentry * root = <S2SV_ModEnd> mount_pseudo ( fs_type <S2SV_ModStart> AIO_RING_MAGIC ) ; if ( ! IS_ERR ( root ) ) root -> d_sb -> s_iflags |= SB_I_NOEXEC ; return root ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1065\n\n```\nCWE-476 unsigned int arpt_do_table ( struct sk_buff * skb , const struct nf_hook_state * state , struct xt_table * table ) { unsigned int hook = state -> hook ; static const char nulldevname [ IFNAMSIZ ] __attribute__ ( ( aligned ( sizeof ( long ) ) ) ) ; unsigned int verdict = NF_DROP ; const struct arphdr * arp ; struct arpt_entry * e , * * jumpstack ; const char * indev , * outdev ; const void * table_base ; unsigned int cpu , stackidx = 0 ; const struct xt_table_info * private ; struct xt_action_param acpar ; unsigned int addend ; if ( ! pskb_may_pull ( skb , arp_hdr_len ( skb -> dev ) ) ) return NF_DROP ; indev = state -> in ? state -> in -> name : nulldevname ; outdev = state -> out ? state -> out -> name : nulldevname ; local_bh_disable ( ) ; addend = xt_write_recseq_begin ( ) ; private = READ_ONCE ( table -> private ) ; cpu = smp_processor_id ( ) ; table_base = private -> entries ; jumpstack = ( struct arpt_entry * * ) private -> jumpstack [ cpu ] ; e = get_entry ( table_base , private -> hook_entry [ hook ] ) ; acpar . state = state ; acpar . hotdrop = false ; arp = arp_hdr ( skb ) ; do { const struct xt_entry_target * t ; struct xt_counters * counter ; if ( ! arp_packet_match ( arp , skb -> dev , indev , outdev , & e -> arp ) ) { e = arpt_next_entry ( e ) ; continue ; } counter = xt_get_this_cpu_counter ( & e -> counters ) ; ADD_COUNTER ( * counter , arp_hdr_len ( skb -> dev ) , 1 ) ; t = arpt_get_target_c ( e ) ; if ( ! t -> u . kernel . target -> target ) { int v ; v = ( ( struct xt_standard_target * ) t ) -> verdict ; if ( v < 0 ) { if ( v != XT_RETURN ) { verdict = ( unsigned int ) ( - v ) - 1 ; break ; } if ( stackidx == 0 ) { e = get_entry ( table_base , private -> underflow [ hook ] ) ; } else { e = jumpstack [ -- stackidx ] ; e = arpt_next_entry ( e ) ; } continue ; } if ( table_base + v != arpt_next_entry ( e ) ) { <S2SV_StartBug> jumpstack [ stackidx ++ ] = e ; <S2SV_EndBug> } e = get_entry ( table_base , v ) ; continue ; } acpar . target = t -> u . kernel . target ; acpar . targinfo = t -> data ; verdict = t -> u . kernel . target -> target ( skb , & acpar ) ; if ( verdict == XT_CONTINUE ) { arp = arp_hdr ( skb ) ; e = arpt_next_entry ( e ) ; } else { break ; } } while ( ! acpar . hotdrop ) ; xt_write_recseq_end ( addend ) ; local_bh_enable ( ) ; if ( acpar . hotdrop ) return NF_DROP ; else return verdict ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( unlikely ( stackidx >= private -> stacksize ) ) { verdict = NF_DROP ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10093\n\n```\nCWE-190 static void cpStripToTile ( uint8 * out , uint8 * in , <S2SV_StartBug> uint32 rows , uint32 cols , int outskew , int inskew ) <S2SV_EndBug> { while ( rows -- > 0 ) { uint32 j = cols ; while ( j -- > 0 ) * out ++ = * in ++ ; out += outskew ; in += inskew ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int outskew , int64 <S2SV_ModEnd> inskew ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4478\n\n```\nCWE-119 void xmlrpc_char_encode ( char * outbuffer , const char * s1 ) { long unsigned int i ; unsigned char c ; char buf2 [ 15 ] ; mowgli_string_t * s = mowgli_string_create ( ) ; * buf2 = '\\\\0' ; * outbuffer = '\\\\0' ; if ( ( ! ( s1 ) || ( * ( s1 ) == '\\\\0' ) ) ) { return ; } for ( i = 0 ; s1 [ i ] != '\\\\0' ; i ++ ) { c = s1 [ i ] ; if ( c > 127 ) { snprintf ( buf2 , sizeof buf2 , \"&#%d;\" , c ) ; s -> append ( s , buf2 , strlen ( buf2 ) ) ; } else if ( c == '&' ) { s -> append ( s , \"&amp;\" , 5 ) ; } else if ( c == '<' ) { s -> append ( s , \"&lt;\" , 4 ) ; } else if ( c == '>' ) { s -> append ( s , \"&gt;\" , 4 ) ; } else if ( c == \\'\"\\' ) { s -> append ( s , \"&quot;\" , 6 ) ; } else { s -> append_char ( s , c ) ; } } <S2SV_StartBug> memcpy ( outbuffer , s -> str , XMLRPC_BUFSIZE ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } s -> append_char ( s , 0 ) ; strncpy <S2SV_ModEnd> ( outbuffer ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2517\n\n```\nCWE-119 static int nl80211_start_sched_scan ( struct sk_buff * skb , struct genl_info * info ) { struct cfg80211_sched_scan_request * request ; struct cfg80211_registered_device * rdev = info -> user_ptr [ 0 ] ; struct net_device * dev = info -> user_ptr [ 1 ] ; struct nlattr * attr ; struct wiphy * wiphy ; int err , tmp , n_ssids = 0 , n_channels , i ; u32 interval ; enum ieee80211_band band ; size_t ie_len ; if ( ! ( rdev -> wiphy . flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN ) || ! rdev -> ops -> sched_scan_start ) return - EOPNOTSUPP ; if ( ! is_valid_ie_attr ( info -> attrs [ NL80211_ATTR_IE ] ) ) return - EINVAL ; if ( rdev -> sched_scan_req ) return - EINPROGRESS ; if ( ! info -> attrs [ NL80211_ATTR_SCHED_SCAN_INTERVAL ] ) return - EINVAL ; interval = nla_get_u32 ( info -> attrs [ NL80211_ATTR_SCHED_SCAN_INTERVAL ] ) ; if ( interval == 0 ) return - EINVAL ; wiphy = & rdev -> wiphy ; if ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) { n_channels = validate_scan_freqs ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) ; if ( ! n_channels ) return - EINVAL ; } else { n_channels = 0 ; for ( band = 0 ; band < IEEE80211_NUM_BANDS ; band ++ ) if ( wiphy -> bands [ band ] ) n_channels += wiphy -> bands [ band ] -> n_channels ; } if ( info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] ) nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] , tmp ) n_ssids ++ ; if ( n_ssids > wiphy -> max_scan_ssids ) return - EINVAL ; if ( info -> attrs [ NL80211_ATTR_IE ] ) ie_len = nla_len ( info -> attrs [ NL80211_ATTR_IE ] ) ; else ie_len = 0 ; if ( ie_len > wiphy -> max_scan_ie_len ) return - EINVAL ; request = kzalloc ( sizeof ( * request ) + sizeof ( * request -> ssids ) * n_ssids + sizeof ( * request -> channels ) * n_channels + ie_len , GFP_KERNEL ) ; if ( ! request ) return - ENOMEM ; if ( n_ssids ) request -> ssids = ( void * ) & request -> channels [ n_channels ] ; request -> n_ssids = n_ssids ; if ( ie_len ) { if ( request -> ssids ) request -> ie = ( void * ) ( request -> ssids + n_ssids ) ; else request -> ie = ( void * ) ( request -> channels + n_channels ) ; } i = 0 ; if ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) { nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] , tmp ) { struct ieee80211_channel * chan ; chan = ieee80211_get_channel ( wiphy , nla_get_u32 ( attr ) ) ; if ( ! chan ) { err = - EINVAL ; goto out_free ; } if ( chan -> flags & IEEE80211_CHAN_DISABLED ) continue ; request -> channels [ i ] = chan ; i ++ ; } } else { for ( band = 0 ; band < IEEE80211_NUM_BANDS ; band ++ ) { int j ; if ( ! wiphy -> bands [ band ] ) continue ; for ( j = 0 ; j < wiphy -> bands [ band ] -> n_channels ; j ++ ) { struct ieee80211_channel * chan ; chan = & wiphy -> bands [ band ] -> channels [ j ] ; if ( chan -> flags & IEEE80211_CHAN_DISABLED ) continue ; request -> channels [ i ] = chan ; i ++ ; } } } if ( ! i ) { err = - EINVAL ; goto out_free ; } request -> n_channels = i ; i = 0 ; if ( info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] ) { nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] , tmp ) { <S2SV_StartBug> if ( request -> ssids [ i ] . ssid_len > <S2SV_EndBug> IEEE80211_MAX_SSID_LEN ) { err = - EINVAL ; goto out_free ; } memcpy ( request -> ssids [ i ] . ssid , nla_data ( attr ) , nla_len ( attr ) ) ; <S2SV_StartBug> request -> ssids [ i ] . ssid_len = nla_len ( attr ) ; <S2SV_EndBug> i ++ ; } } if ( info -> attrs [ NL80211_ATTR_IE ] ) { request -> ie_len = nla_len ( info -> attrs [ NL80211_ATTR_IE ] ) ; memcpy ( ( void * ) request -> ie , nla_data ( info -> attrs [ NL80211_ATTR_IE ] ) , request -> ie_len ) ; } request -> dev = dev ; request -> wiphy = & rdev -> wiphy ; request -> interval = interval ; err = rdev -> ops -> sched_scan_start ( & rdev -> wiphy , dev , request ) ; if ( ! err ) { rdev -> sched_scan_req = request ; nl80211_send_sched_scan ( rdev , dev , NL80211_CMD_START_SCHED_SCAN ) ; goto out ; } out_free : kfree ( request ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp ) { request -> ssids [ i ] . ssid_len = nla_len ( attr ) ; <S2SV_ModStart> ) ) ; <S2SV_ModEnd> i ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7014\n\n```\nCWE-189 static void add_bytes_l2_c ( uint8_t * dst , uint8_t * src1 , uint8_t * src2 , int w ) { long i ; <S2SV_StartBug> for ( i = 0 ; i <= w - sizeof ( long ) ; i += sizeof ( long ) ) { <S2SV_EndBug> long a = * ( long * ) ( src1 + i ) ; long b = * ( long * ) ( src2 + i ) ; * ( long * ) ( dst + i ) = ( ( a & pb_7f ) + ( b & pb_7f ) ) ^ ( ( a ^ b ) & pb_80 ) ; } for ( ; i < w ; i ++ ) dst [ i ] = src1 [ i ] + src2 [ i ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <= w - ( int )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13000\n\n```\nCWE-125 u_int ieee802_15_4_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int caplen = h -> caplen ; u_int hdrlen ; uint16_t fc ; uint8_t seq ; uint16_t panid = 0 ; if ( caplen < 3 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return caplen ; } hdrlen = 3 ; fc = EXTRACT_LE_16BITS ( p ) ; seq = EXTRACT_LE_8BITS ( p + 2 ) ; p += 3 ; caplen -= 3 ; ND_PRINT ( ( ndo , \"IEEE<S2SV_blank>802.15.4<S2SV_blank>%s<S2SV_blank>packet<S2SV_blank>\" , ftypes [ FC_FRAME_TYPE ( fc ) ] ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"seq<S2SV_blank>%02x<S2SV_blank>\" , seq ) ) ; switch ( FC_DEST_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( fc & FC_PAN_ID_COMPRESSION ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>destination<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return hdrlen ; case FC_ADDRESSING_MODE_SHORT : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_StartBug> ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p + 2 ) ) ) ; <S2SV_EndBug> p += 2 ; caplen -= 2 ; hdrlen += 2 ; break ; case FC_ADDRESSING_MODE_LONG : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; p += 8 ; caplen -= 8 ; hdrlen += 8 ; break ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<<S2SV_blank>\" ) ) ; switch ( FC_SRC_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>source<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return 0 ; case FC_ADDRESSING_MODE_SHORT : if ( ! ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p ) ) ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; break ; case FC_ADDRESSING_MODE_LONG : if ( ! ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; p += 8 ; caplen -= 8 ; hdrlen += 8 ; break ; } if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , caplen ) ; return hdrlen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EXTRACT_LE_16BITS ( p <S2SV_ModEnd> ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { q = ( const uint8_t * ) ( const void * ) ( ( const char * ) ( const void * ) p + CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ) - 2 * sizeof ( uint32_t ) ; if ( q > e ) { DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%d)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=%x,%d\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; o = 2 ; } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%d\\\\n\" , nelements ) ) ; for ( j = 0 ; j < nelements ; j ++ , i ++ ) { uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; l = 4 + ( uint32_t ) CDF_ROUND ( l , sizeof ( l ) ) ; o += l >> 2 ; <S2SV_StartBug> o4 = o * sizeof ( uint32_t ) ; <S2SV_EndBug> } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; goto out ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> >> 2 ; if ( q + o >= e ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int read_yuv_frame ( struct VpxInputContext * input_ctx , vpx_image_t * yuv_frame ) { FILE * f = input_ctx -> file ; struct FileTypeDetectionBuffer * detect = & input_ctx -> detect ; int plane = 0 ; int shortread = 0 ; <S2SV_StartBug> for ( plane = 0 ; plane < 3 ; ++ plane ) { <S2SV_EndBug> uint8_t * ptr ; <S2SV_StartBug> const int w = ( plane ? ( 1 + yuv_frame -> d_w ) / 2 : yuv_frame -> d_w ) ; <S2SV_EndBug> <S2SV_StartBug> const int h = ( plane ? ( 1 + yuv_frame -> d_h ) / 2 : yuv_frame -> d_h ) ; <S2SV_EndBug> int r ; switch ( plane ) { case 1 : ptr = yuv_frame -> planes [ yuv_frame -> fmt == VPX_IMG_FMT_YV12 ? VPX_PLANE_V : VPX_PLANE_U ] ; break ; case 2 : ptr = yuv_frame -> planes [ yuv_frame -> fmt == VPX_IMG_FMT_YV12 ? VPX_PLANE_U : VPX_PLANE_V ] ; break ; default : ptr = yuv_frame -> planes [ plane ] ; } for ( r = 0 ; r < h ; ++ r ) { <S2SV_StartBug> size_t needed = w ; <S2SV_EndBug> size_t buf_position = 0 ; const size_t left = detect -> buf_read - detect -> position ; if ( left > 0 ) { const size_t more = ( left < needed ) ? left : needed ; memcpy ( ptr , detect -> buf + detect -> position , more ) ; buf_position = more ; needed -= more ; detect -> position += more ; } if ( needed > 0 ) { shortread |= ( fread ( ptr + buf_position , 1 , needed , f ) < needed ) ; } ptr += yuv_frame -> stride [ plane ] ; } } return shortread ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; const int bytespp = ( yuv_frame -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? 2 : 1 ; <S2SV_ModStart> int w = vpx_img_plane_width ( yuv_frame , plane <S2SV_ModEnd> ) ; const <S2SV_ModStart> int h = vpx_img_plane_height ( yuv_frame , plane <S2SV_ModEnd> ) ; int <S2SV_ModStart> needed = w * bytespp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3188\n\n```\nCWE-000 unsigned int get_random_int ( void ) { <S2SV_StartBug> struct keydata * keyptr ; <S2SV_EndBug> __u32 * hash = get_cpu_var ( get_random_int_hash ) ; <S2SV_StartBug> int ret ; <S2SV_EndBug> keyptr = get_keyptr ( ) ; hash [ 0 ] += current -> pid + jiffies + get_cycles ( ) ; <S2SV_StartBug> ret = half_md4_transform ( hash , keyptr -> secret ) ; <S2SV_EndBug> put_cpu_var ( get_random_int_hash ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { <S2SV_ModEnd> __u32 * hash <S2SV_ModStart> get_random_int_hash ) ; unsigned int ret <S2SV_ModEnd> ; hash [ <S2SV_ModStart> ( ) ; md5_transform <S2SV_ModEnd> ( hash , <S2SV_ModStart> ( hash , random_int_secret ) ; ret = hash [ 0 ] <S2SV_ModEnd> ; put_cpu_var (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 static void xen_irq_init ( unsigned irq ) { struct irq_info * info ; # ifdef CONFIG_SMP cpumask_copy ( irq_get_affinity_mask ( irq ) , cpumask_of ( 0 ) ) ; # endif info = kzalloc ( sizeof ( * info ) , GFP_KERNEL ) ; if ( info == NULL ) panic ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>metadata<S2SV_blank>for<S2SV_blank>IRQ%d\\\\n\" , irq ) ; info -> type = IRQT_UNBOUND ; info -> refcnt = - 1 ; set_info_for_irq ( irq , info ) ; <S2SV_StartBug> list_add_tail ( & info -> list , & xen_irq_list_head ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> info ) ; INIT_LIST_HEAD ( & info -> eoi_list ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15888\n\n```\nCWE-416 void luaD_call ( lua_State * L , StkId func , int nresults ) { lua_CFunction f ; retry : switch ( ttypetag ( s2v ( func ) ) ) { case LUA_VCCL : f = clCvalue ( s2v ( func ) ) -> f ; goto Cfunc ; case LUA_VLCF : f = fvalue ( s2v ( func ) ) ; Cfunc : { int n ; <S2SV_StartBug> CallInfo * ci = next_ci ( L ) ; <S2SV_EndBug> checkstackp ( L , LUA_MINSTACK , func ) ; ci -> nresults = nresults ; ci -> callstatus = CIST_C ; ci -> top = L -> top + LUA_MINSTACK ; <S2SV_StartBug> ci -> func = func ; <S2SV_EndBug> L -> ci = ci ; lua_assert ( ci -> top <= L -> stack_last ) ; if ( L -> hookmask & LUA_MASKCALL ) { int narg = cast_int ( L -> top - func ) - 1 ; luaD_hook ( L , LUA_HOOKCALL , - 1 , 1 , narg ) ; } lua_unlock ( L ) ; n = ( * f ) ( L ) ; lua_lock ( L ) ; api_checknelems ( L , n ) ; luaD_poscall ( L , ci , n ) ; break ; } case LUA_VLCL : { <S2SV_StartBug> CallInfo * ci = next_ci ( L ) ; <S2SV_EndBug> Proto * p = clLvalue ( s2v ( func ) ) -> p ; int narg = cast_int ( L -> top - func ) - 1 ; int nfixparams = p -> numparams ; int fsize = p -> maxstacksize ; <S2SV_StartBug> checkstackp ( L , fsize , func ) ; <S2SV_EndBug> ci -> nresults = nresults ; ci -> u . l . savedpc = p -> code ; ci -> callstatus = 0 ; ci -> top = func + 1 + fsize ; ci -> func = func ; L -> ci = ci ; for ( ; narg < nfixparams ; narg ++ ) setnilvalue ( s2v ( L -> top ++ ) ) ; lua_assert ( ci -> top <= L -> stack_last ) ; luaV_execute ( L , ci ) ; break ; } default : { <S2SV_StartBug> checkstackp ( L , 1 , func ) ; <S2SV_EndBug> luaD_tryfuncTM ( L , func ) ; goto retry ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CallInfo * ci ; checkstackGCp ( L , LUA_MINSTACK , func ) ; L -> ci = ci <S2SV_ModStart> next_ci ( L <S2SV_ModEnd> ) ; ci <S2SV_ModStart> func = func <S2SV_ModEnd> ; lua_assert ( <S2SV_ModStart> CallInfo * ci <S2SV_ModEnd> ; Proto * <S2SV_ModStart> -> maxstacksize ; checkstackGCp <S2SV_ModEnd> ( L , <S2SV_ModStart> fsize , func ) ; L -> ci = ci = next_ci ( L <S2SV_ModStart> default : { checkstackGCp <S2SV_ModEnd> ( L ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 static void sgi_timer_get ( struct k_itimer * timr , struct itimerspec * cur_setting ) { if ( timr -> it . mmtimer . clock == TIMER_OFF ) { cur_setting -> it_interval . tv_nsec = 0 ; cur_setting -> it_interval . tv_sec = 0 ; cur_setting -> it_value . tv_nsec = 0 ; cur_setting -> it_value . tv_sec = 0 ; return ; } <S2SV_StartBug> ns_to_timespec ( cur_setting -> it_interval , timr -> it . mmtimer . incr * sgi_clock_period ) ; <S2SV_EndBug> <S2SV_StartBug> ns_to_timespec ( cur_setting -> it_value , ( timr -> it . mmtimer . expires - rtc_time ( ) ) * sgi_clock_period ) ; <S2SV_EndBug> <S2SV_StartBug> return ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } <S2SV_ModEnd> cur_setting -> it_interval <S2SV_ModStart> cur_setting -> it_interval = ns_to_timespec ( <S2SV_ModEnd> timr -> it <S2SV_ModStart> sgi_clock_period ) ; <S2SV_ModEnd> cur_setting -> it_value <S2SV_ModStart> cur_setting -> it_value = ns_to_timespec ( <S2SV_ModEnd> ( timr -> <S2SV_ModStart> sgi_clock_period ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2384\n\n```\nCWE-000 int snd_usbmidi_create ( struct snd_card * card , struct usb_interface * iface , struct list_head * midi_list , const struct snd_usb_audio_quirk * quirk ) { struct snd_usb_midi * umidi ; struct snd_usb_midi_endpoint_info endpoints [ MIDI_MAX_ENDPOINTS ] ; int out_ports , in_ports ; int i , err ; umidi = kzalloc ( sizeof ( * umidi ) , GFP_KERNEL ) ; if ( ! umidi ) return - ENOMEM ; umidi -> dev = interface_to_usbdev ( iface ) ; umidi -> card = card ; umidi -> iface = iface ; umidi -> quirk = quirk ; umidi -> usb_protocol_ops = & snd_usbmidi_standard_ops ; spin_lock_init ( & umidi -> disc_lock ) ; init_rwsem ( & umidi -> disc_rwsem ) ; mutex_init ( & umidi -> mutex ) ; umidi -> usb_id = USB_ID ( le16_to_cpu ( umidi -> dev -> descriptor . idVendor ) , le16_to_cpu ( umidi -> dev -> descriptor . idProduct ) ) ; setup_timer ( & umidi -> error_timer , snd_usbmidi_error_timer , ( unsigned long ) umidi ) ; memset ( endpoints , 0 , sizeof ( endpoints ) ) ; switch ( quirk ? quirk -> type : QUIRK_MIDI_STANDARD_INTERFACE ) { case QUIRK_MIDI_STANDARD_INTERFACE : err = snd_usbmidi_get_ms_info ( umidi , endpoints ) ; if ( umidi -> usb_id == USB_ID ( 0x0763 , 0x0150 ) ) umidi -> usb_protocol_ops = & snd_usbmidi_maudio_broken_running_status_ops ; break ; case QUIRK_MIDI_US122L : umidi -> usb_protocol_ops = & snd_usbmidi_122l_ops ; case QUIRK_MIDI_FIXED_ENDPOINT : memcpy ( & endpoints [ 0 ] , quirk -> data , sizeof ( struct snd_usb_midi_endpoint_info ) ) ; err = snd_usbmidi_detect_endpoints ( umidi , & endpoints [ 0 ] , 1 ) ; break ; case QUIRK_MIDI_YAMAHA : err = snd_usbmidi_detect_yamaha ( umidi , & endpoints [ 0 ] ) ; break ; case QUIRK_MIDI_ROLAND : err = snd_usbmidi_detect_roland ( umidi , & endpoints [ 0 ] ) ; break ; case QUIRK_MIDI_MIDIMAN : umidi -> usb_protocol_ops = & snd_usbmidi_midiman_ops ; memcpy ( & endpoints [ 0 ] , quirk -> data , sizeof ( struct snd_usb_midi_endpoint_info ) ) ; err = 0 ; break ; case QUIRK_MIDI_NOVATION : umidi -> usb_protocol_ops = & snd_usbmidi_novation_ops ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; case QUIRK_MIDI_RAW_BYTES : umidi -> usb_protocol_ops = & snd_usbmidi_raw_ops ; if ( umidi -> usb_id == USB_ID ( 0x07fd , 0x0001 ) ) usb_set_interface ( umidi -> dev , 0 , 0 ) ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; case QUIRK_MIDI_EMAGIC : umidi -> usb_protocol_ops = & snd_usbmidi_emagic_ops ; memcpy ( & endpoints [ 0 ] , quirk -> data , sizeof ( struct snd_usb_midi_endpoint_info ) ) ; err = snd_usbmidi_detect_endpoints ( umidi , & endpoints [ 0 ] , 1 ) ; break ; case QUIRK_MIDI_CME : umidi -> usb_protocol_ops = & snd_usbmidi_cme_ops ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; case QUIRK_MIDI_AKAI : umidi -> usb_protocol_ops = & snd_usbmidi_akai_ops ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; endpoints [ 1 ] . out_cables = 0 ; break ; case QUIRK_MIDI_FTDI : umidi -> usb_protocol_ops = & snd_usbmidi_ftdi_ops ; err = usb_control_msg ( umidi -> dev , usb_sndctrlpipe ( umidi -> dev , 0 ) , 3 , 0x40 , 0x60 , 0 , NULL , 0 , 1000 ) ; if ( err < 0 ) break ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; case QUIRK_MIDI_CH345 : umidi -> usb_protocol_ops = & snd_usbmidi_ch345_broken_sysex_ops ; err = snd_usbmidi_detect_per_port_endpoints ( umidi , endpoints ) ; break ; default : dev_err ( & umidi -> dev -> dev , \"invalid<S2SV_blank>quirk<S2SV_blank>type<S2SV_blank>%d\\\\n\" , quirk -> type ) ; err = - ENXIO ; break ; } if ( err < 0 ) { kfree ( umidi ) ; return err ; } out_ports = 0 ; in_ports = 0 ; for ( i = 0 ; i < MIDI_MAX_ENDPOINTS ; ++ i ) { out_ports += hweight16 ( endpoints [ i ] . out_cables ) ; in_ports += hweight16 ( endpoints [ i ] . in_cables ) ; } err = snd_usbmidi_create_rawmidi ( umidi , out_ports , in_ports ) ; if ( err < 0 ) { kfree ( umidi ) ; return err ; } if ( quirk && quirk -> type == QUIRK_MIDI_MIDIMAN ) err = snd_usbmidi_create_endpoints_midiman ( umidi , & endpoints [ 0 ] ) ; else err = snd_usbmidi_create_endpoints ( umidi , endpoints ) ; if ( err < 0 ) { <S2SV_StartBug> snd_usbmidi_free ( umidi ) ; <S2SV_EndBug> return err ; } usb_autopm_get_interface_no_resume ( umidi -> iface ) ; list_add_tail ( & umidi -> list , midi_list ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { <S2SV_ModEnd> return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14882\n\n```\nCWE-125 static void icmp6_nodeinfo_print ( netdissect_options * ndo , u_int icmp6len , const u_char * bp , const u_char * ep ) { const struct icmp6_nodeinfo * ni6 ; const struct icmp6_hdr * dp ; const u_char * cp ; size_t siz , i ; int needcomma ; if ( ep < bp ) return ; dp = ( const struct icmp6_hdr * ) bp ; ni6 = ( const struct icmp6_nodeinfo * ) bp ; siz = ep - bp ; switch ( ni6 -> ni_type ) { case ICMP6_NI_QUERY : if ( siz == sizeof ( * dp ) + 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>who-are-you<S2SV_blank>request\" ) ) ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>node<S2SV_blank>information<S2SV_blank>query\" ) ) ; ND_TCHECK2 ( * dp , sizeof ( * ni6 ) ) ; ni6 = ( const struct icmp6_nodeinfo * ) dp ; ND_PRINT ( ( ndo , \"<S2SV_blank>(\" ) ) ; switch ( EXTRACT_16BITS ( & ni6 -> ni_qtype ) ) { case NI_QTYPE_NOOP : ND_PRINT ( ( ndo , \"noop\" ) ) ; break ; case NI_QTYPE_SUPTYPES : ND_PRINT ( ( ndo , \"supported<S2SV_blank>qtypes\" ) ) ; i = EXTRACT_16BITS ( & ni6 -> ni_flags ) ; if ( i ) ND_PRINT ( ( ndo , \"<S2SV_blank>[%s]\" , ( i & 0x01 ) ? \"C\" : \"\" ) ) ; break ; case NI_QTYPE_FQDN : ND_PRINT ( ( ndo , \"DNS<S2SV_blank>name\" ) ) ; break ; case NI_QTYPE_NODEADDR : ND_PRINT ( ( ndo , \"node<S2SV_blank>addresses\" ) ) ; i = ni6 -> ni_flags ; if ( ! i ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>[%s%s%s%s%s%s]\" , ( i & NI_NODEADDR_FLAG_ANYCAST ) ? \"a\" : \"\" , ( i & NI_NODEADDR_FLAG_GLOBAL ) ? \"G\" : \"\" , ( i & NI_NODEADDR_FLAG_SITELOCAL ) ? \"S\" : \"\" , ( i & NI_NODEADDR_FLAG_LINKLOCAL ) ? \"L\" : \"\" , ( i & NI_NODEADDR_FLAG_COMPAT ) ? \"C\" : \"\" , ( i & NI_NODEADDR_FLAG_ALL ) ? \"A\" : \"\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"unknown\" ) ) ; break ; } if ( ni6 -> ni_qtype == NI_QTYPE_NOOP || ni6 -> ni_qtype == NI_QTYPE_SUPTYPES ) { if ( siz != sizeof ( * ni6 ) ) if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>len\" ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; } if ( siz == sizeof ( * ni6 ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>03<S2SV_blank>draft\" ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; } switch ( ni6 -> ni_code ) { case ICMP6_NI_SUBJ_IPV6 : if ( ! ND_TTEST2 ( * dp , sizeof ( * ni6 ) + sizeof ( struct in6_addr ) ) ) break ; if ( siz != sizeof ( * ni6 ) + sizeof ( struct in6_addr ) ) { if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>subject<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \",<S2SV_blank>subject=%s\" , ip6addr_string ( ndo , ni6 + 1 ) ) ) ; break ; case ICMP6_NI_SUBJ_FQDN : ND_PRINT ( ( ndo , \",<S2SV_blank>subject=DNS<S2SV_blank>name\" ) ) ; cp = ( const u_char * ) ( ni6 + 1 ) ; if ( cp [ 0 ] == ep - cp - 1 ) { if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>03<S2SV_blank>draft\" ) ) ; cp ++ ; ND_PRINT ( ( ndo , \",<S2SV_blank>\\\\\"\" ) ) ; while ( cp < ep ) { safeputchar ( ndo , * cp ) ; cp ++ ; } ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } else dnsname_print ( ndo , cp , ep ) ; break ; case ICMP6_NI_SUBJ_IPV4 : if ( ! ND_TTEST2 ( * dp , sizeof ( * ni6 ) + sizeof ( struct in_addr ) ) ) break ; if ( siz != sizeof ( * ni6 ) + sizeof ( struct in_addr ) ) { if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>subject<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \",<S2SV_blank>subject=%s\" , ipaddr_string ( ndo , ni6 + 1 ) ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>unknown<S2SV_blank>subject\" ) ) ; break ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case ICMP6_NI_REPLY : if ( icmp6len > siz ) { ND_PRINT ( ( ndo , \"[|icmp6:<S2SV_blank>node<S2SV_blank>information<S2SV_blank>reply]\" ) ) ; break ; } needcomma = 0 ; ND_TCHECK2 ( * dp , sizeof ( * ni6 ) ) ; ni6 = ( const struct icmp6_nodeinfo * ) dp ; ND_PRINT ( ( ndo , \"<S2SV_blank>node<S2SV_blank>information<S2SV_blank>reply\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(\" ) ) ; switch ( ni6 -> ni_code ) { case ICMP6_NI_SUCCESS : if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"success\" ) ) ; needcomma ++ ; } break ; case ICMP6_NI_REFUSED : ND_PRINT ( ( ndo , \"refused\" ) ) ; needcomma ++ ; if ( siz != sizeof ( * ni6 ) ) if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>length\" ) ) ; break ; case ICMP6_NI_UNKNOWN : ND_PRINT ( ( ndo , \"unknown\" ) ) ; needcomma ++ ; if ( siz != sizeof ( * ni6 ) ) if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>length\" ) ) ; break ; } if ( ni6 -> ni_code != ICMP6_NI_SUCCESS ) { ND_PRINT ( ( ndo , \")\" ) ) ; break ; } switch ( EXTRACT_16BITS ( & ni6 -> ni_qtype ) ) { case NI_QTYPE_NOOP : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"noop\" ) ) ; if ( siz != sizeof ( * ni6 ) ) if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>length\" ) ) ; break ; case NI_QTYPE_SUPTYPES : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"supported<S2SV_blank>qtypes\" ) ) ; i = EXTRACT_16BITS ( & ni6 -> ni_flags ) ; if ( i ) ND_PRINT ( ( ndo , \"<S2SV_blank>[%s]\" , ( i & 0x01 ) ? \"C\" : \"\" ) ) ; break ; case NI_QTYPE_FQDN : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"DNS<S2SV_blank>name\" ) ) ; cp = ( const u_char * ) ( ni6 + 1 ) + 4 ; ND_TCHECK ( cp [ 0 ] ) ; if ( cp [ 0 ] == ep - cp - 1 ) { if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>03<S2SV_blank>draft\" ) ) ; cp ++ ; ND_PRINT ( ( ndo , \",<S2SV_blank>\\\\\"\" ) ) ; while ( cp < ep ) { safeputchar ( ndo , * cp ) ; cp ++ ; } ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } else dnsname_print ( ndo , cp , ep ) ; if ( ( EXTRACT_16BITS ( & ni6 -> ni_flags ) & 0x01 ) != 0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>[TTL=%u]\" , EXTRACT_32BITS ( ni6 + 1 ) ) ) ; break ; case NI_QTYPE_NODEADDR : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"node<S2SV_blank>addresses\" ) ) ; i = sizeof ( * ni6 ) ; while ( i < siz ) { if ( i + sizeof ( struct in6_addr ) + sizeof ( int32_t ) > siz ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , bp + i ) ) ) ; i += sizeof ( struct in6_addr ) ; ND_PRINT ( ( ndo , \"(%d)\" , ( int32_t ) EXTRACT_32BITS ( bp + i ) ) ) ; i += sizeof ( int32_t ) ; } i = ni6 -> ni_flags ; if ( ! i ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>[%s%s%s%s%s%s%s]\" , ( i & NI_NODEADDR_FLAG_ANYCAST ) ? \"a\" : \"\" , ( i & NI_NODEADDR_FLAG_GLOBAL ) ? \"G\" : \"\" , ( i & NI_NODEADDR_FLAG_SITELOCAL ) ? \"S\" : \"\" , ( i & NI_NODEADDR_FLAG_LINKLOCAL ) ? \"L\" : \"\" , ( i & NI_NODEADDR_FLAG_COMPAT ) ? \"C\" : \"\" , ( i & NI_NODEADDR_FLAG_ALL ) ? \"A\" : \"\" , ( i & NI_NODEADDR_FLAG_TRUNCATE ) ? \"T\" : \"\" ) ) ; break ; default : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"unknown\" ) ) ; break ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; } return ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"[|icmp6]\" ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"%s\" , icmp6_tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 int key_update ( key_ref_t key_ref , const void * payload , size_t plen ) { struct key_preparsed_payload prep ; struct key * key = key_ref_to_ptr ( key_ref ) ; int ret ; key_check ( key ) ; ret = key_permission ( key_ref , KEY_NEED_WRITE ) ; if ( ret < 0 ) return ret ; if ( ! key -> type -> update ) return - EOPNOTSUPP ; memset ( & prep , 0 , sizeof ( prep ) ) ; prep . data = payload ; prep . datalen = plen ; prep . quotalen = key -> type -> def_datalen ; prep . expiry = TIME_T_MAX ; if ( key -> type -> preparse ) { ret = key -> type -> preparse ( & prep ) ; if ( ret < 0 ) goto error ; } down_write ( & key -> sem ) ; ret = key -> type -> update ( key , & prep ) ; if ( ret == 0 ) <S2SV_StartBug> clear_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ; <S2SV_EndBug> up_write ( & key -> sem ) ; error : if ( key -> type -> preparse ) key -> type -> free_preparse ( & prep ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) mark_key_instantiated ( key , 0 <S2SV_ModEnd> ) ; up_write\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_buffer_level ( VP9_COMP * cpi , int encoded_frame_size ) { <S2SV_StartBug> const VP9_COMMON * const cm = & cpi -> common ; <S2SV_EndBug> const VP9_CONFIG * oxcf = & cpi -> oxcf ; RATE_CONTROL * const rc = & cpi -> rc ; if ( ! cm -> show_frame ) { rc -> bits_off_target -= encoded_frame_size ; } else { <S2SV_StartBug> rc -> bits_off_target += rc -> av_per_frame_bandwidth - encoded_frame_size ; <S2SV_EndBug> } <S2SV_StartBug> rc -> bits_off_target = MIN ( rc -> bits_off_target , oxcf -> maximum_buffer_size ) ; <S2SV_EndBug> rc -> buffer_level = rc -> bits_off_target ; <S2SV_StartBug> if ( cpi -> use_svc && cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { <S2SV_EndBug> update_layer_buffer_level ( & cpi -> svc , encoded_frame_size ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi -> common <S2SV_ModEnd> ; RATE_CONTROL * <S2SV_ModStart> += rc -> avg_frame_bandwidth <S2SV_ModEnd> - encoded_frame_size ; <S2SV_ModStart> -> bits_off_target , rc <S2SV_ModEnd> -> maximum_buffer_size ) <S2SV_ModStart> ; if ( is_one_pass_cbr_svc ( cpi ) <S2SV_ModEnd> ) { update_layer_buffer_level\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18344\n\n```\nCWE-125 int common_timer_set ( struct k_itimer * timr , int flags , struct itimerspec64 * new_setting , struct itimerspec64 * old_setting ) { const struct k_clock * kc = timr -> kclock ; bool sigev_none ; ktime_t expires ; if ( old_setting ) common_timer_get ( timr , old_setting ) ; timr -> it_interval = 0 ; if ( kc -> timer_try_to_cancel ( timr ) < 0 ) return TIMER_RETRY ; timr -> it_active = 0 ; timr -> it_requeue_pending = ( timr -> it_requeue_pending + 2 ) & ~ REQUEUE_PENDING ; timr -> it_overrun_last = 0 ; if ( ! new_setting -> it_value . tv_sec && ! new_setting -> it_value . tv_nsec ) return 0 ; timr -> it_interval = timespec64_to_ktime ( new_setting -> it_interval ) ; expires = timespec64_to_ktime ( new_setting -> it_value ) ; <S2SV_StartBug> sigev_none = ( timr -> it_sigev_notify & ~ SIGEV_THREAD_ID ) == SIGEV_NONE ; <S2SV_EndBug> kc -> timer_arm ( timr , expires , flags & TIMER_ABSTIME , sigev_none ) ; timr -> it_active = ! sigev_none ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sigev_none = <S2SV_ModEnd> timr -> it_sigev_notify <S2SV_ModStart> timr -> it_sigev_notify <S2SV_ModEnd> == SIGEV_NONE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0178\n\n```\nCWE-20 void initServer ( ) { int j ; signal ( SIGHUP , SIG_IGN ) ; signal ( SIGPIPE , SIG_IGN ) ; setupSigSegvAction ( ) ; if ( server . syslog_enabled ) { openlog ( server . syslog_ident , LOG_PID | LOG_NDELAY | LOG_NOWAIT , server . syslog_facility ) ; } server . mainthread = pthread_self ( ) ; server . clients = listCreate ( ) ; server . slaves = listCreate ( ) ; server . monitors = listCreate ( ) ; server . unblocked_clients = listCreate ( ) ; createSharedObjects ( ) ; server . el = aeCreateEventLoop ( ) ; server . db = zmalloc ( sizeof ( redisDb ) * server . dbnum ) ; server . ipfd = anetTcpServer ( server . neterr , server . port , server . bindaddr ) ; if ( server . ipfd == ANET_ERR ) { redisLog ( REDIS_WARNING , \"Opening<S2SV_blank>port:<S2SV_blank>%s\" , server . neterr ) ; exit ( 1 ) ; } if ( server . unixsocket != NULL ) { unlink ( server . unixsocket ) ; server . sofd = anetUnixServer ( server . neterr , server . unixsocket ) ; if ( server . sofd == ANET_ERR ) { redisLog ( REDIS_WARNING , \"Opening<S2SV_blank>socket:<S2SV_blank>%s\" , server . neterr ) ; exit ( 1 ) ; } } if ( server . ipfd < 0 && server . sofd < 0 ) { redisLog ( REDIS_WARNING , \"Configured<S2SV_blank>to<S2SV_blank>not<S2SV_blank>listen<S2SV_blank>anywhere,<S2SV_blank>exiting.\" ) ; exit ( 1 ) ; } for ( j = 0 ; j < server . dbnum ; j ++ ) { server . db [ j ] . dict = dictCreate ( & dbDictType , NULL ) ; server . db [ j ] . expires = dictCreate ( & keyptrDictType , NULL ) ; server . db [ j ] . blocking_keys = dictCreate ( & keylistDictType , NULL ) ; server . db [ j ] . watched_keys = dictCreate ( & keylistDictType , NULL ) ; <S2SV_StartBug> if ( server . vm_enabled ) <S2SV_EndBug> server . db [ j ] . io_keys = dictCreate ( & keylistDictType , NULL ) ; server . db [ j ] . id = j ; } server . pubsub_channels = dictCreate ( & keylistDictType , NULL ) ; server . pubsub_patterns = listCreate ( ) ; listSetFreeMethod ( server . pubsub_patterns , freePubsubPattern ) ; listSetMatchMethod ( server . pubsub_patterns , listMatchPubsubPattern ) ; server . cronloops = 0 ; server . bgsavechildpid = - 1 ; server . bgrewritechildpid = - 1 ; server . bgrewritebuf = sdsempty ( ) ; server . aofbuf = sdsempty ( ) ; server . lastsave = time ( NULL ) ; server . dirty = 0 ; server . stat_numcommands = 0 ; server . stat_numconnections = 0 ; server . stat_expiredkeys = 0 ; server . stat_evictedkeys = 0 ; server . stat_starttime = time ( NULL ) ; server . stat_keyspace_misses = 0 ; server . stat_keyspace_hits = 0 ; server . unixtime = time ( NULL ) ; aeCreateTimeEvent ( server . el , 1 , serverCron , NULL , NULL ) ; if ( server . ipfd > 0 && aeCreateFileEvent ( server . el , server . ipfd , AE_READABLE , acceptTcpHandler , NULL ) == AE_ERR ) oom ( \"creating<S2SV_blank>file<S2SV_blank>event\" ) ; if ( server . sofd > 0 && aeCreateFileEvent ( server . el , server . sofd , AE_READABLE , acceptUnixHandler , NULL ) == AE_ERR ) oom ( \"creating<S2SV_blank>file<S2SV_blank>event\" ) ; if ( server . appendonly ) { server . appendfd = open ( server . appendfilename , O_WRONLY | O_APPEND | O_CREAT , 0644 ) ; if ( server . appendfd == - 1 ) { redisLog ( REDIS_WARNING , \"Can\\'t<S2SV_blank>open<S2SV_blank>the<S2SV_blank>append-only<S2SV_blank>file:<S2SV_blank>%s\" , strerror ( errno ) ) ; exit ( 1 ) ; } } <S2SV_StartBug> if ( server . vm_enabled ) vmInit ( ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( server . ds_enabled <S2SV_ModEnd> ) server . <S2SV_ModStart> ( server . ds_enabled ) dsInit <S2SV_ModEnd> ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 void test_re ( ) { assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi(s|p)/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssim*/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssa?/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/Miss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/(M|N)iss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/[M-N]iss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/(Mi|ssi)ssippi/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ppi\\\\\\\\tmi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ppi\\\\\\\\.mi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^mississippi/<S2SV_blank>fullword<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/mississippi.*mississippi$/s<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^ssi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi$/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssissi/<S2SV_blank>fullword<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^[isp]+/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/a.{1,2}b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>6<S2SV_blank>}\" , \"a\\\\0x\\\\0b\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/a.{1,2}b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>8<S2SV_blank>}\" , \"a\\\\0x\\\\0x\\\\0b\\\\0\" ) ; <S2SV_StartBug> assert_regexp_syntax_error ( \")\" ) ; <S2SV_EndBug> assert_true_regexp ( \"abc\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"abc\" , \"xbc\" ) ; assert_false_regexp ( \"abc\" , \"axc\" ) ; assert_false_regexp ( \"abc\" , \"abx\" ) ; assert_true_regexp ( \"abc\" , \"xabcx\" , \"abc\" ) ; assert_true_regexp ( \"abc\" , \"ababc\" , \"abc\" ) ; assert_true_regexp ( \"a.c\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"a.b\" , \"a\\\\nb\" ) ; assert_false_regexp ( \"a.*b\" , \"acc\\\\nccb\" ) ; assert_false_regexp ( \"a.{4,5}b\" , \"acc\\\\nccb\" ) ; assert_true_regexp ( \"a.b\" , \"a\\\\rb\" , \"a\\\\rb\" ) ; assert_true_regexp ( \"ab*c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"ab*bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*bc\" , \"abbc\" , \"abbc\" ) ; assert_true_regexp ( \"a.*bb\" , \"abbbb\" , \"abbbb\" ) ; assert_true_regexp ( \"a.*?bbb\" , \"abbbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"a.*c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a.*c\" , \"axyzc\" , \"axyzc\" ) ; assert_true_regexp ( \"ab+c\" , \"abbc\" , \"abbc\" ) ; assert_false_regexp ( \"ab+c\" , \"ac\" ) ; assert_true_regexp ( \"ab+\" , \"abbbb\" , \"abbbb\" ) ; assert_true_regexp ( \"ab+?\" , \"abbbb\" , \"ab\" ) ; assert_false_regexp ( \"ab+bc\" , \"abc\" ) ; assert_false_regexp ( \"ab+bc\" , \"abq\" ) ; assert_true_regexp ( \"a+b+c\" , \"aabbabc\" , \"abc\" ) ; assert_false_regexp ( \"ab?bc\" , \"abbbbc\" ) ; assert_true_regexp ( \"ab?c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*?\" , \"abbb\" , \"a\" ) ; assert_true_regexp ( \"ab?c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"ab??\" , \"ab\" , \"a\" ) ; assert_true_regexp ( \"a(b|x)c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a(b|x)c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a(b|.)c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a(b|x|y)c\" , \"ayc\" , \"ayc\" ) ; assert_true_regexp ( \"(a+|b)*\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a|b|c|d|e\" , \"e\" , \"e\" ) ; assert_true_regexp ( \"(a|b|c|d|e)f\" , \"ef\" , \"ef\" ) ; assert_true_regexp ( \".b{2}\" , \"abb\" , \"abb\" ) ; assert_true_regexp ( \".b{2,3}\" , \"abbb\" , \"abbb\" ) ; assert_true_regexp ( \".b{2,3}?\" , \"abbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{2,3}c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{2,3}?c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \".b{2,3}cccc\" , \"abbbcccc\" , \"abbbcccc\" ) ; assert_true_regexp ( \".b{2,3}?cccc\" , \"abbbcccc\" , \"bbbcccc\" ) ; assert_true_regexp ( \"a.b{2,3}cccc\" , \"aabbbcccc\" , \"aabbbcccc\" ) ; assert_true_regexp ( \"ab{2,3}c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{2,3}?c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{0,1}?c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a{0,1}?bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a{0,1}bc\" , \"bbc\" , \"bc\" ) ; assert_true_regexp ( \"a{0,1}?bc\" , \"abc\" , \"bc\" ) ; assert_true_regexp ( \"aa{0,1}?bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"aa{0,1}?bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"aa{0,1}bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab{1}c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab{1,2}c\" , \"abbc\" , \"abbc\" ) ; assert_true_regexp ( \"ab{1,}c\" , \"abbbc\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{1,}b\" , \"ab\" ) ; assert_false_regexp ( \"ab{1}c\" , \"abbc\" ) ; assert_true_regexp ( \"ab{0,}c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"ab{1,1}c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab{0,}c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{,3}c\" , \"abbbc\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{,2}c\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{4,5}bc\" , \"abbbbc\" ) ; assert_true_regexp ( \"ab{0,1}\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{0,2}\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{0,3}\" , \"abbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"ab{0,4}\" , \"abbbbb\" , \"abbbb\" ) ; assert_true_regexp ( \"ab{1,1}\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{1,2}\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{1,3}\" , \"abbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"ab{2,2}\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{2,3}\" , \"abbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"ab{1,3}?\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{0,1}?\" , \"abbbbb\" , \"a\" ) ; assert_true_regexp ( \"ab{0,2}?\" , \"abbbbb\" , \"a\" ) ; assert_true_regexp ( \"ab{0,3}?\" , \"abbbbb\" , \"a\" ) ; assert_true_regexp ( \"ab{0,4}?\" , \"abbbbb\" , \"a\" ) ; assert_true_regexp ( \"ab{1,1}?\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{1,2}?\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{1,3}?\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{2,2}?\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{2,3}?\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \".(abc){0,1}\" , \"xabcabcabcabc\" , \"xabc\" ) ; assert_true_regexp ( \".(abc){0,2}\" , \"xabcabcabcabc\" , \"xabcabc\" ) ; assert_true_regexp ( \"x{1,2}abcd\" , \"xxxxabcd\" , \"xxabcd\" ) ; assert_true_regexp ( \"x{1,2}abcd\" , \"xxxxabcd\" , \"xxabcd\" ) ; assert_true_regexp ( \"ab{.*}\" , \"ab{c}\" , \"ab{c}\" ) ; assert_true_regexp ( \".(aa){1,2}\" , \"aaaaaaaaaa\" , \"aaaaa\" ) ; assert_true_regexp ( \"a.(bc.){2}\" , \"aabcabca\" , \"aabcabca\" ) ; assert_true_regexp ( \"(ab{1,2}c){1,3}\" , \"abbcabc\" , \"abbcabc\" ) ; assert_true_regexp ( \"ab(c|cc){1,3}d\" , \"abccccccd\" , \"abccccccd\" ) ; assert_true_regexp ( \"a[bx]c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a[bx]c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a[0-9]*b\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a[0-9]*b\" , \"a0123456789b\" , \"a0123456789b\" ) ; assert_true_regexp ( \"[0-9a-f]+\" , \"0123456789abcdef\" , \"0123456789abcdef\" ) ; assert_true_regexp ( \"[0-9a-f]+\" , \"xyz0123456789xyz\" , \"0123456789\" ) ; assert_true_regexp ( \"a[\\\\\\\\s\\\\\\\\S]b\" , \"a<S2SV_blank>b\" , \"a<S2SV_blank>b\" ) ; assert_true_regexp ( \"a[\\\\\\\\d\\\\\\\\D]b\" , \"a1b\" , \"a1b\" ) ; assert_false_regexp ( \"[x-z]+\" , \"abc\" ) ; assert_true_regexp ( \"a[-]?c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a[-b]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[-b]\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a[b-]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[b-]\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"[a-c-e]\" , \"b\" , \"b\" ) ; assert_true_regexp ( \"[a-c-e]\" , \"-\" , \"-\" ) ; assert_false_regexp ( \"[a-c-e]\" , \"d\" ) ; assert_regexp_syntax_error ( \"[b-a]\" ) ; assert_regexp_syntax_error ( \"(abc\" ) ; assert_regexp_syntax_error ( \"abc)\" ) ; assert_regexp_syntax_error ( \"a[]b\" ) ; assert_true_regexp ( \"a[\\\\\\\\-b]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[\\\\\\\\-b]\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a]\" , \"a]\" , \"a]\" ) ; assert_true_regexp ( \"a[]]b\" , \"a]b\" , \"a]b\" ) ; assert_true_regexp ( \"a[\\\\\\\\]]b\" , \"a]b\" , \"a]b\" ) ; assert_true_regexp ( \"a[^bc]d\" , \"aed\" , \"aed\" ) ; assert_false_regexp ( \"a[^bc]d\" , \"abd\" ) ; assert_true_regexp ( \"a[^-b]c\" , \"adc\" , \"adc\" ) ; assert_false_regexp ( \"a[^-b]c\" , \"a-c\" ) ; assert_false_regexp ( \"a[^]b]c\" , \"a]c\" ) ; assert_true_regexp ( \"a[^]b]c\" , \"adc\" , \"adc\" ) ; assert_true_regexp ( \"[^ab]*\" , \"cde\" , \"cde\" ) ; assert_regexp_syntax_error ( \")(\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a<S2SV_blank>b\" , \"a<S2SV_blank>b\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\tb\" , \"a\\\\tb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\rb\" , \"a\\\\rb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\nb\" , \"a\\\\nb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\vb\" , \"a\\\\vb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\fb\" , \"a\\\\fb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a<S2SV_blank>b\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\tb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\rb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\nb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\vb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\fb\" ) ; assert_true_regexp ( \"\\\\\\\\n\\\\\\\\r\\\\\\\\t\\\\\\\\f\\\\\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" ) ; assert_true_regexp ( \"[\\\\\\\\n][\\\\\\\\r][\\\\\\\\t][\\\\\\\\f][\\\\\\\\a]\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" ) ; assert_true_regexp ( \"\\\\\\\\x01\\\\\\\\x02\\\\\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" ) ; assert_true_regexp ( \"[\\\\\\\\x01-\\\\\\\\x03]+\" , \"\\\\x01\\\\x02\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" ) ; assert_false_regexp ( \"[\\\\\\\\x00-\\\\\\\\x02]+\" , \"\\\\x03\\\\x04\\\\x05\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D]\" , \"]\" , \"]\" ) ; assert_true_regexp ( \"[\\\\\\\\0x5A-\\\\\\\\x5D]\" , \"\\\\x5B\" , \"\\\\x5B\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"[\\\\\\\\x5C-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"a_c\" , \"a_c\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"a0c\" , \"a0c\" ) ; assert_false_regexp ( \"a\\\\\\\\wc\" , \"a*c\" ) ; assert_true_regexp ( \"\\\\\\\\w+\" , \"--ab_cd0123--\" , \"ab_cd0123\" ) ; assert_true_regexp ( \"[\\\\\\\\w]+\" , \"--ab_cd0123--\" , \"ab_cd0123\" ) ; assert_true_regexp ( \"\\\\\\\\D+\" , \"1234abc5678\" , \"abc\" ) ; assert_true_regexp ( \"[\\\\\\\\d]+\" , \"0123456789\" , \"0123456789\" ) ; assert_true_regexp ( \"[\\\\\\\\D]+\" , \"1234abc5678\" , \"abc\" ) ; assert_true_regexp ( \"[\\\\\\\\da-fA-F]+\" , \"123abc\" , \"123abc\" ) ; assert_false_regexp ( \"^(ab|cd)e\" , \"abcde\" ) ; assert_true_regexp ( \"(abc|)ef\" , \"abcdef\" , \"ef\" ) ; assert_true_regexp ( \"(abc|)ef\" , \"abcef\" , \"abcef\" ) ; assert_true_regexp ( \"\\\\\\\\babc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"abc\\\\\\\\b\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"\\\\\\\\babc\" , \"1abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\b\" , \"abc1\" ) ; assert_true_regexp ( \"abc\\\\\\\\s\\\\\\\\b\" , \"abc<S2SV_blank>x\" , \"abc<S2SV_blank>\" ) ; assert_false_regexp ( \"abc\\\\\\\\s\\\\\\\\b\" , \"abc<S2SV_blank><S2SV_blank>\" ) ; assert_true_regexp ( \"\\\\\\\\babc\\\\\\\\b\" , \"<S2SV_blank>abc<S2SV_blank>\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"<S2SV_blank>abc<S2SV_blank>\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"abcd\" , \"bcd\" ) ; assert_true_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\" , \"abcd\" , \"abc\" ) ; assert_false_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"abcd\" ) ; assert_false_regexp ( \"\\\\\\\\Babc\" , \"abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\B\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\Babc\" , \"1abc\" , \"abc\" ) ; assert_true_regexp ( \"abc\\\\\\\\B\" , \"abc1\" , \"abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\s\\\\\\\\B\" , \"abc<S2SV_blank>x\" ) ; assert_true_regexp ( \"abc\\\\\\\\s\\\\\\\\B\" , \"abc<S2SV_blank><S2SV_blank>\" , \"abc<S2SV_blank>\" ) ; assert_true_regexp ( \"\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\B\" , \"abcd\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\B\\\\\\\\w\\\\\\\\w\\\\\\\\w\" , \"abcd\" , \"bcd\" ) ; assert_false_regexp ( \"\\\\\\\\B\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\B\" , \"abcd\" ) ; assert_regexp_syntax_error ( \"(|abc)ef\" ) ; assert_true_regexp ( \"((a)(b)c)(d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"(a|b)c*d\" , \"abcd\" , \"bcd\" ) ; assert_true_regexp ( \"(ab|ab*)bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"a\" , \"a\" ) ; assert_true_regexp ( \"a([bc]*)(c*d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a([bc]+)(c*d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a([bc]*)(c+d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a[bcd]*dcdcde\" , \"adcdcde\" , \"adcdcde\" ) ; assert_false_regexp ( \"a[bcd]+dcdcde\" , \"adcdcde\" ) ; assert_true_regexp ( \"\\\\\\\\((.*),<S2SV_blank>(.*)\\\\\\\\)\" , \"(a,<S2SV_blank>b)\" , \"(a,<S2SV_blank>b)\" ) ; assert_true_regexp ( \"abc|123$\" , \"abcx\" , \"abc\" ) ; assert_false_regexp ( \"abc|123$\" , \"123x\" ) ; assert_true_regexp ( \"abc|^123\" , \"123\" , \"123\" ) ; assert_false_regexp ( \"abc|^123\" , \"x123\" ) ; assert_true_regexp ( \"^abc$\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"^abc$\" , \"abcc\" ) ; assert_true_regexp ( \"^abc\" , \"abcc\" , \"abc\" ) ; assert_false_regexp ( \"^abc$\" , \"aabc\" ) ; assert_false_regexp ( \"abc^\" , \"abc\" ) ; assert_false_regexp ( \"ab^c\" , \"abc\" ) ; assert_false_regexp ( \"a^bcdef\" , \"abcdef\" ) assert_true_regexp ( \"abc$\" , \"aabc\" , \"abc\" ) ; assert_false_regexp ( \"$abc\" , \"abc\" ) ; assert_true_regexp ( \"(a|a$)bcd\" , \"abcd\" , \"abcd\" ) ; assert_false_regexp ( \"(a$|a$)bcd\" , \"abcd\" ) ; assert_false_regexp ( \"(abc$|ab$)\" , \"abcd\" ) ; assert_true_regexp ( \"^a(bc+|b[eh])g|.h$\" , \"abhg\" , \"abhg\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"effgz\" , \"effgz\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"ij\" , \"ij\" ) ; assert_false_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"effg\" ) ; assert_false_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"bcdd\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"reffgz\" , \"effgz\" ) ; assert_true_regexp ( \"whatever|<S2SV_blank><S2SV_blank><S2SV_blank>x.<S2SV_blank><S2SV_blank><S2SV_blank>x\" , \"<S2SV_blank><S2SV_blank><S2SV_blank>xy<S2SV_blank><S2SV_blank><S2SV_blank>x\" , \"<S2SV_blank><S2SV_blank><S2SV_blank>xy<S2SV_blank><S2SV_blank><S2SV_blank>x\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\x0\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\x\" ) ; assert_regexp_syntax_error ( \"x{0,0}\" ) ; assert_regexp_syntax_error ( \"x{0}\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\xxy\" ) ; assert_error ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/a\\\\\\\\/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , ERROR_SYNTAX_ERROR ) ; assert_error ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/[a\\\\\\\\/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , ERROR_SYNTAX_ERROR ) ; assert_true_rule_blob ( <S2SV_StartBug> \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/MZ.{300,}t/<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>317<S2SV_blank>}\" , <S2SV_EndBug> PE32_FILE ) ; assert_true_rule_blob ( <S2SV_StartBug> \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/MZ.{300,}?t/<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>314<S2SV_blank>}\" , <S2SV_EndBug> PE32_FILE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"a\\\\0x\\\\0x\\\\0b\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"\\\\0a\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"\\\\ta\\\\0b\\\\0c\\\\0\" ) ; assert_false_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"x\\\\0a\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"x\\\\ta\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0\\\\t\" ) ; assert_false_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0x\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0b\\\\t\" ) ; assert_false_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"abc\" ) ; <S2SV_ModStart> ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/MZ.{300,}t/<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>317<S2SV_blank>}\" <S2SV_ModEnd> , PE32_FILE ) <S2SV_ModStart> ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/MZ.{300,}?t/<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>314<S2SV_blank>}\" <S2SV_ModEnd> , PE32_FILE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6520\n\n```\nCWE-264 static void start_daemon ( ) { struct usb_sock_t * usb_sock ; if ( g_options . noprinter_mode == 0 ) { usb_sock = usb_open ( ) ; if ( usb_sock == NULL ) goto cleanup_usb ; } else usb_sock = NULL ; uint16_t desired_port = g_options . desired_port ; <S2SV_StartBug> struct tcp_sock_t * tcp_socket ; <S2SV_EndBug> <S2SV_StartBug> while ( ( tcp_socket = tcp_open ( desired_port ) ) == NULL && <S2SV_EndBug> <S2SV_StartBug> g_options . only_desired_port == 0 ) { <S2SV_EndBug> desired_port ++ ; if ( desired_port == 1 || desired_port == 0 ) desired_port = 49152 ; <S2SV_StartBug> } <S2SV_EndBug> if ( tcp_socket == NULL ) goto cleanup_tcp ; <S2SV_StartBug> uint16_t real_port = tcp_port_number_get ( tcp_socket ) ; <S2SV_EndBug> if ( desired_port != 0 && g_options . only_desired_port == 1 && desired_port != real_port ) { ERR ( \"Received<S2SV_blank>port<S2SV_blank>number<S2SV_blank>did<S2SV_blank>not<S2SV_blank>match<S2SV_blank>requested<S2SV_blank>port<S2SV_blank>number.\" \"<S2SV_blank>The<S2SV_blank>requested<S2SV_blank>port<S2SV_blank>number<S2SV_blank>may<S2SV_blank>be<S2SV_blank>too<S2SV_blank>high.\" ) ; goto cleanup_tcp ; } printf ( \"%u|\" , real_port ) ; fflush ( stdout ) ; <S2SV_StartBug> uint16_t pid ; <S2SV_EndBug> if ( ! g_options . nofork_mode && ( pid = fork ( ) ) > 0 ) { printf ( \"%u|\" , pid ) ; exit ( 0 ) ; } if ( usb_can_callback ( usb_sock ) ) usb_register_callback ( usb_sock ) ; for ( ; ; ) { struct service_thread_param * args = calloc ( 1 , sizeof ( * args ) ) ; if ( args == NULL ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>space<S2SV_blank>for<S2SV_blank>thread<S2SV_blank>args\" ) ; goto cleanup_thread ; } args -> usb_sock = usb_sock ; <S2SV_StartBug> args -> tcp = tcp_conn_accept ( tcp_socket ) ; <S2SV_EndBug> if ( args -> tcp == NULL ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>tcp<S2SV_blank>connection\" ) ; goto cleanup_thread ; } int status = pthread_create ( & args -> thread_handle , NULL , & service_connection , args ) ; if ( status ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>spawn<S2SV_blank>thread,<S2SV_blank>error<S2SV_blank>%d\" , status ) ; goto cleanup_thread ; } continue ; cleanup_thread : if ( args != NULL ) { if ( args -> tcp != NULL ) tcp_conn_close ( args -> tcp ) ; free ( args ) ; } break ; } cleanup_tcp : if ( tcp_socket != NULL ) tcp_close ( tcp_socket ) ; <S2SV_StartBug> cleanup_usb : <S2SV_EndBug> if ( usb_sock != NULL ) usb_close ( usb_sock ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tcp_sock_t * tcp_socket = NULL , * tcp6_socket = NULL ; for ( ; ; ) { <S2SV_ModEnd> tcp_socket = tcp_open <S2SV_ModStart> ( desired_port ) ; tcp6_socket = tcp6_open ( desired_port ) ; if ( tcp_socket || tcp6_socket || <S2SV_ModEnd> g_options . only_desired_port <S2SV_ModStart> g_options . only_desired_port ) break ; <S2SV_ModEnd> desired_port ++ ; <S2SV_ModStart> = 49152 ; NOTE ( \"Access<S2SV_blank>to<S2SV_blank>desired<S2SV_blank>port<S2SV_blank>failed,<S2SV_blank>trying<S2SV_blank>alternative<S2SV_blank>port<S2SV_blank>%d\" , desired_port ) ; } if ( tcp_socket == NULL && tcp6_socket <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ; uint16_t real_port ; if ( tcp_socket ) real_port <S2SV_ModStart> tcp_port_number_get ( tcp_socket ) ; else real_port = tcp_port_number_get ( tcp6_socket <S2SV_ModStart> stdout ) ; NOTE ( \"Port:<S2SV_blank>%d,<S2SV_blank>IPv4<S2SV_blank>%savailable,<S2SV_blank>IPv6<S2SV_blank>%savailable\" , real_port , tcp_socket ? \"\" : \"not<S2SV_blank>\" , tcp6_socket ? \"\" : \"not<S2SV_blank>\" ) ; <S2SV_ModStart> -> tcp = tcp_conn_select ( tcp_socket , tcp6_socket <S2SV_ModEnd> ) ; if <S2SV_ModStart> tcp_socket ) ; if ( tcp6_socket != NULL ) tcp_close ( tcp6_socket ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8957\n\n```\nCWE-119 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , length ; ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; } switch ( sun_info . maptype ) { case RMT_NONE : { if ( sun_info . depth < 24 ) { if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( sun_info . depth >= 8 ) && ( ( number_pixels * ( ( sun_info . depth + 7 ) / 8 ) ) > sun_info . length ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_StartBug> sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) sun_info . length , <S2SV_EndBug> <S2SV_StartBug> sizeof ( * sun_data ) ) ; <S2SV_EndBug> if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; sun_pixels = sun_data ; bytes_per_line = 0 ; if ( sun_info . type == RT_ENCODED ) { size_t height ; <S2SV_StartBug> height = sun_info . height ; <S2SV_EndBug> bytes_per_line = sun_info . width * sun_info . depth ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * height ) ; sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; } p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { if ( bytes_per_line == 0 ) bytes_per_line = image -> columns ; length = image -> rows * ( image -> columns + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; <S2SV_ModStart> ( size_t ) MagickMax ( <S2SV_ModStart> . length , bytes_per_line * sun_info . width ) , <S2SV_ModStart> sun_info . height <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 static int do_dentry_open ( struct file * f , int ( * open ) ( struct inode * , struct file * ) , const struct cred * cred ) { static const struct file_operations empty_fops = { } ; struct inode * inode ; int error ; f -> f_mode = OPEN_FMODE ( f -> f_flags ) | FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE ; if ( unlikely ( f -> f_flags & O_PATH ) ) f -> f_mode = FMODE_PATH ; path_get ( & f -> f_path ) ; inode = f -> f_inode = f -> f_path . dentry -> d_inode ; if ( f -> f_mode & FMODE_WRITE ) { error = __get_file_write_access ( inode , f -> f_path . mnt ) ; if ( error ) goto cleanup_file ; if ( ! special_file ( inode -> i_mode ) ) file_take_write ( f ) ; } f -> f_mapping = inode -> i_mapping ; <S2SV_StartBug> file_sb_list_add ( f , inode -> i_sb ) ; <S2SV_EndBug> if ( unlikely ( f -> f_mode & FMODE_PATH ) ) { f -> f_op = & empty_fops ; return 0 ; } f -> f_op = fops_get ( inode -> i_fop ) ; if ( unlikely ( WARN_ON ( ! f -> f_op ) ) ) { error = - ENODEV ; goto cleanup_all ; } error = security_file_open ( f , cred ) ; if ( error ) goto cleanup_all ; error = break_lease ( inode , f -> f_flags ) ; if ( error ) goto cleanup_all ; if ( ! open ) open = f -> f_op -> open ; if ( open ) { error = open ( inode , f ) ; if ( error ) goto cleanup_all ; } if ( ( f -> f_mode & ( FMODE_READ | FMODE_WRITE ) ) == FMODE_READ ) i_readcount_inc ( inode ) ; f -> f_flags &= ~ ( O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC ) ; file_ra_state_init ( & f -> f_ra , f -> f_mapping -> host -> i_mapping ) ; return 0 ; cleanup_all : fops_put ( f -> f_op ) ; <S2SV_StartBug> file_sb_list_del ( f ) ; <S2SV_EndBug> if ( f -> f_mode & FMODE_WRITE ) { put_write_access ( inode ) ; if ( ! special_file ( inode -> i_mode ) ) { file_reset_write ( f ) ; __mnt_drop_write ( f -> f_path . mnt ) ; } } cleanup_file : path_put ( & f -> f_path ) ; f -> f_path . mnt = NULL ; f -> f_path . dentry = NULL ; f -> f_inode = NULL ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> i_mapping ; <S2SV_ModEnd> if ( unlikely <S2SV_ModStart> f_op ) ; <S2SV_ModEnd> if ( f\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0290\n\n```\nCWE-20 struct sk_buff * __skb_recv_datagram ( struct sock * sk , unsigned int flags , int * peeked , int * off , int * err ) { struct sk_buff * skb ; long timeo ; int error = sock_error ( sk ) ; if ( error ) goto no_packet ; timeo = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; do { unsigned long cpu_flags ; struct sk_buff_head * queue = & sk -> sk_receive_queue ; spin_lock_irqsave ( & queue -> lock , cpu_flags ) ; skb_queue_walk ( queue , skb ) { * peeked = skb -> peeked ; if ( flags & MSG_PEEK ) { <S2SV_StartBug> if ( * off >= skb -> len ) { <S2SV_EndBug> * off -= skb -> len ; continue ; } skb -> peeked = 1 ; atomic_inc ( & skb -> users ) ; } else __skb_unlink ( skb , queue ) ; spin_unlock_irqrestore ( & queue -> lock , cpu_flags ) ; return skb ; } spin_unlock_irqrestore ( & queue -> lock , cpu_flags ) ; error = - EAGAIN ; if ( ! timeo ) goto no_packet ; } while ( ! wait_for_packet ( sk , err , & timeo ) ) ; return NULL ; no_packet : * err = error ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb -> len && skb -> len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14470\n\n```\nCWE-125 static void babel_print_v2 ( netdissect_options * ndo , const u_char * cp , u_int length ) { u_int i ; u_short bodylen ; u_char v4_prefix [ 16 ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0xFF , 0xFF , 0 , 0 , 0 , 0 } ; u_char v6_prefix [ 16 ] = { 0 } ; ND_TCHECK2 ( * cp , 4 ) ; if ( length < 4 ) goto invalid ; bodylen = EXTRACT_16BITS ( cp + 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%u)\" , bodylen ) ) ; i = 0 ; while ( i < bodylen ) { const u_char * message ; u_int type , len ; message = cp + 4 + i ; ND_TCHECK2 ( * message , 1 ) ; if ( ( type = message [ 0 ] ) == MESSAGE_PAD1 ) { ND_PRINT ( ( ndo , ndo -> ndo_vflag ? \"\\\\n\\\\tPad<S2SV_blank>1\" : \"<S2SV_blank>pad1\" ) ) ; i += 1 ; continue ; } ND_TCHECK2 ( * message , 2 ) ; ICHECK ( i , 2 ) ; len = message [ 1 ] ; ND_TCHECK2 ( * message , 2 + len ) ; ICHECK ( i , 2 + len ) ; switch ( type ) { case MESSAGE_PADN : { if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>padN\" ) ) ; else ND_PRINT ( ( ndo , \"\\\\n\\\\tPad<S2SV_blank>%d\" , len + 2 ) ) ; } break ; case MESSAGE_ACK_REQ : { u_short nonce , interval ; if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>ack-req\" ) ) ; else { ND_PRINT ( ( ndo , \"\\\\n\\\\tAcknowledgment<S2SV_blank>Request<S2SV_blank>\" ) ) ; if ( len < 6 ) goto invalid ; nonce = EXTRACT_16BITS ( message + 4 ) ; interval = EXTRACT_16BITS ( message + 6 ) ; ND_PRINT ( ( ndo , \"%04x<S2SV_blank>%s\" , nonce , format_interval ( interval ) ) ) ; } } break ; case MESSAGE_ACK : { u_short nonce ; if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>ack\" ) ) ; else { ND_PRINT ( ( ndo , \"\\\\n\\\\tAcknowledgment<S2SV_blank>\" ) ) ; if ( len < 2 ) goto invalid ; nonce = EXTRACT_16BITS ( message + 2 ) ; ND_PRINT ( ( ndo , \"%04x\" , nonce ) ) ; } } break ; case MESSAGE_HELLO : { u_short seqno , interval ; if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>hello\" ) ) ; else { ND_PRINT ( ( ndo , \"\\\\n\\\\tHello<S2SV_blank>\" ) ) ; if ( len < 6 ) goto invalid ; seqno = EXTRACT_16BITS ( message + 4 ) ; interval = EXTRACT_16BITS ( message + 6 ) ; ND_PRINT ( ( ndo , \"seqno<S2SV_blank>%u<S2SV_blank>interval<S2SV_blank>%s\" , seqno , format_interval ( interval ) ) ) ; if ( len > 6 ) subtlvs_print ( ndo , message + 8 , message + 2 + len , type ) ; } } break ; case MESSAGE_IHU : { unsigned short txcost , interval ; if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>ihu\" ) ) ; else { u_char address [ 16 ] ; int rc ; ND_PRINT ( ( ndo , \"\\\\n\\\\tIHU<S2SV_blank>\" ) ) ; if ( len < 6 ) goto invalid ; txcost = EXTRACT_16BITS ( message + 4 ) ; interval = EXTRACT_16BITS ( message + 6 ) ; rc = network_address ( message [ 2 ] , message + 8 , len - 6 , address ) ; if ( rc < 0 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; break ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank>txcost<S2SV_blank>%u<S2SV_blank>interval<S2SV_blank>%s\" , format_address ( ndo , address ) , txcost , format_interval ( interval ) ) ) ; if ( ( u_int ) rc < len - 6 ) subtlvs_print ( ndo , message + 8 + rc , message + 2 + len , type ) ; } } break ; case MESSAGE_ROUTER_ID : { if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>router-id\" ) ) ; else { ND_PRINT ( ( ndo , \"\\\\n\\\\tRouter<S2SV_blank>Id\" ) ) ; if ( len < 10 ) goto invalid ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , format_id ( message + 4 ) ) ) ; } } break ; case MESSAGE_NH : { if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>nh\" ) ) ; else { int rc ; u_char nh [ 16 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\tNext<S2SV_blank>Hop\" ) ) ; if ( len < 2 ) goto invalid ; rc = network_address ( message [ 2 ] , message + 4 , len - 2 , nh ) ; if ( rc < 0 ) goto invalid ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , format_address ( ndo , nh ) ) ) ; } } break ; case MESSAGE_UPDATE : { if ( ! ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"<S2SV_blank>update\" ) ) ; <S2SV_StartBug> if ( len < 1 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"/truncated\" ) ) ; else ND_PRINT ( ( ndo , \"%s%s%s\" , ( message [ 3 ] & 0x80 ) ? \"/prefix\" : \"\" , ( message [ 3 ] & 0x40 ) ? \"/id\" : \"\" , ( message [ 3 ] & 0x3f ) ? \"/unknown\" : \"\" ) ) ; } else { u_short interval , seqno , metric ; u_char plen ; int rc ; u_char prefix [ 16 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\tUpdate\" ) ) ; if ( len < 10 ) goto invalid ; plen = message [ 4 ] + ( message [ 2 ] == 1 ? 96 : 0 ) ; rc = network_prefix ( message [ 2 ] , message [ 4 ] , message [ 5 ] , message + 12 , message [ 2 ] == 1 ? v4_prefix : v6_prefix , len - 10 , prefix ) ; if ( rc < 0 ) goto invalid ; interval = EXTRACT_16BITS ( message + 6 ) ; seqno = EXTRACT_16BITS ( message + 8 ) ; metric = EXTRACT_16BITS ( message + 10 ) ; ND_PRINT ( ( ndo , \"%s%s%s<S2SV_blank>%s<S2SV_blank>metric<S2SV_blank>%u<S2SV_blank>seqno<S2SV_blank>%u<S2SV_blank>interval<S2SV_blank>%s\" , ( message [ 3 ] & 0x80 ) ? \"/prefix\" : \"\" , ( message [ 3 ] & 0x40 ) ? \"/id\" : \"\" , ( message [ 3 ] & 0x3f ) ? \"/unknown\" : \"\" , format_prefix ( ndo , prefix , plen ) , metric , seqno , format_interval_update ( interval ) ) ) ; if ( message [ 3 ] & 0x80 ) { if ( message [ 2 ] == 1 ) memcpy ( v4_prefix , prefix , 16 ) ; else memcpy ( v6_prefix , prefix , 16 ) ; } if ( ( u_int ) rc < len - 10 ) subtlvs_print ( ndo , message + 12 + rc , message + 2 + len , type ) ; } } break ; case MESSAGE_REQUEST : { if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>request\" ) ) ; else { int rc ; u_char prefix [ 16 ] , plen ; ND_PRINT ( ( ndo , \"\\\\n\\\\tRequest<S2SV_blank>\" ) ) ; if ( len < 2 ) goto invalid ; plen = message [ 3 ] + ( message [ 2 ] == 1 ? 96 : 0 ) ; rc = network_prefix ( message [ 2 ] , message [ 3 ] , 0 , message + 4 , NULL , len - 2 , prefix ) ; if ( rc < 0 ) goto invalid ; ND_PRINT ( ( ndo , \"for<S2SV_blank>%s\" , message [ 2 ] == 0 ? \"any\" : format_prefix ( ndo , prefix , plen ) ) ) ; } } break ; case MESSAGE_MH_REQUEST : { if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>mh-request\" ) ) ; else { int rc ; u_short seqno ; u_char prefix [ 16 ] , plen ; ND_PRINT ( ( ndo , \"\\\\n\\\\tMH-Request<S2SV_blank>\" ) ) ; if ( len < 14 ) goto invalid ; seqno = EXTRACT_16BITS ( message + 4 ) ; rc = network_prefix ( message [ 2 ] , message [ 3 ] , 0 , message + 16 , NULL , len - 14 , prefix ) ; if ( rc < 0 ) goto invalid ; plen = message [ 3 ] + ( message [ 2 ] == 1 ? 96 : 0 ) ; ND_PRINT ( ( ndo , \"(%u<S2SV_blank>hops)<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>seqno<S2SV_blank>%u<S2SV_blank>id<S2SV_blank>%s\" , message [ 6 ] , format_prefix ( ndo , prefix , plen ) , seqno , format_id ( message + 8 ) ) ) ; } } break ; case MESSAGE_TSPC : if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>tspc\" ) ) ; else { ND_PRINT ( ( ndo , \"\\\\n\\\\tTS/PC<S2SV_blank>\" ) ) ; if ( len < 6 ) goto invalid ; ND_PRINT ( ( ndo , \"timestamp<S2SV_blank>%u<S2SV_blank>packetcounter<S2SV_blank>%u\" , EXTRACT_32BITS ( message + 4 ) , EXTRACT_16BITS ( message + 2 ) ) ) ; } break ; case MESSAGE_HMAC : { if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>hmac\" ) ) ; else { unsigned j ; ND_PRINT ( ( ndo , \"\\\\n\\\\tHMAC<S2SV_blank>\" ) ) ; if ( len < 18 ) goto invalid ; ND_PRINT ( ( ndo , \"key-id<S2SV_blank>%u<S2SV_blank>digest-%u<S2SV_blank>\" , EXTRACT_16BITS ( message + 2 ) , len - 2 ) ) ; for ( j = 0 ; j < len - 2 ; j ++ ) ND_PRINT ( ( ndo , \"%02X\" , message [ 4 + j ] ) ) ; } } break ; case MESSAGE_UPDATE_SRC_SPECIFIC : { if ( ! ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ss-update\" ) ) ; } else { u_char prefix [ 16 ] , src_prefix [ 16 ] ; u_short interval , seqno , metric ; u_char ae , plen , src_plen , omitted ; int rc ; int parsed_len = 10 ; ND_PRINT ( ( ndo , \"\\\\n\\\\tSS-Update\" ) ) ; if ( len < 10 ) goto invalid ; ae = message [ 2 ] ; src_plen = message [ 3 ] ; plen = message [ 4 ] ; omitted = message [ 5 ] ; interval = EXTRACT_16BITS ( message + 6 ) ; seqno = EXTRACT_16BITS ( message + 8 ) ; metric = EXTRACT_16BITS ( message + 10 ) ; rc = network_prefix ( ae , plen , omitted , message + 2 + parsed_len , ae == 1 ? v4_prefix : v6_prefix , len - parsed_len , prefix ) ; if ( rc < 0 ) goto invalid ; if ( ae == 1 ) plen += 96 ; parsed_len += rc ; rc = network_prefix ( ae , src_plen , 0 , message + 2 + parsed_len , NULL , len - parsed_len , src_prefix ) ; if ( rc < 0 ) goto invalid ; if ( ae == 1 ) src_plen += 96 ; parsed_len += rc ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>from\" , format_prefix ( ndo , prefix , plen ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>metric<S2SV_blank>%u<S2SV_blank>seqno<S2SV_blank>%u<S2SV_blank>interval<S2SV_blank>%s\" , format_prefix ( ndo , src_prefix , src_plen ) , metric , seqno , format_interval_update ( interval ) ) ) ; if ( ( u_int ) parsed_len < len ) subtlvs_print ( ndo , message + 2 + parsed_len , message + 2 + len , type ) ; } } break ; case MESSAGE_REQUEST_SRC_SPECIFIC : { if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>ss-request\" ) ) ; else { int rc , parsed_len = 3 ; u_char ae , plen , src_plen , prefix [ 16 ] , src_prefix [ 16 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\tSS-Request<S2SV_blank>\" ) ) ; if ( len < 3 ) goto invalid ; ae = message [ 2 ] ; plen = message [ 3 ] ; src_plen = message [ 4 ] ; rc = network_prefix ( ae , plen , 0 , message + 2 + parsed_len , NULL , len - parsed_len , prefix ) ; if ( rc < 0 ) goto invalid ; if ( ae == 1 ) plen += 96 ; parsed_len += rc ; rc = network_prefix ( ae , src_plen , 0 , message + 2 + parsed_len , NULL , len - parsed_len , src_prefix ) ; if ( rc < 0 ) goto invalid ; if ( ae == 1 ) src_plen += 96 ; parsed_len += rc ; if ( ae == 0 ) { ND_PRINT ( ( ndo , \"for<S2SV_blank>any\" ) ) ; } else { ND_PRINT ( ( ndo , \"for<S2SV_blank>(%s,<S2SV_blank>\" , format_prefix ( ndo , prefix , plen ) ) ) ; ND_PRINT ( ( ndo , \"%s)\" , format_prefix ( ndo , src_prefix , src_plen ) ) ) ; } } } break ; case MESSAGE_MH_REQUEST_SRC_SPECIFIC : { if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>ss-mh-request\" ) ) ; else { int rc , parsed_len = 14 ; u_short seqno ; u_char ae , plen , src_plen , prefix [ 16 ] , src_prefix [ 16 ] , hopc ; const u_char * router_id = NULL ; ND_PRINT ( ( ndo , \"\\\\n\\\\tSS-MH-Request<S2SV_blank>\" ) ) ; if ( len < 14 ) goto invalid ; ae = message [ 2 ] ; plen = message [ 3 ] ; seqno = EXTRACT_16BITS ( message + 4 ) ; hopc = message [ 6 ] ; src_plen = message [ 7 ] ; router_id = message + 8 ; rc = network_prefix ( ae , plen , 0 , message + 2 + parsed_len , NULL , len - parsed_len , prefix ) ; if ( rc < 0 ) goto invalid ; if ( ae == 1 ) plen += 96 ; parsed_len += rc ; rc = network_prefix ( ae , src_plen , 0 , message + 2 + parsed_len , NULL , len - parsed_len , src_prefix ) ; if ( rc < 0 ) goto invalid ; if ( ae == 1 ) src_plen += 96 ; ND_PRINT ( ( ndo , \"(%u<S2SV_blank>hops)<S2SV_blank>for<S2SV_blank>(%s,<S2SV_blank>\" , hopc , format_prefix ( ndo , prefix , plen ) ) ) ; ND_PRINT ( ( ndo , \"%s)<S2SV_blank>seqno<S2SV_blank>%u<S2SV_blank>id<S2SV_blank>%s\" , format_prefix ( ndo , src_prefix , src_plen ) , seqno , format_id ( router_id ) ) ) ; } } break ; default : if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>unknown\" ) ) ; else ND_PRINT ( ( ndo , \"\\\\n\\\\tUnknown<S2SV_blank>message<S2SV_blank>type<S2SV_blank>%d\" , type ) ) ; } i += len + 2 ; } return ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tstr ) ) ; return ; invalid : ND_PRINT ( ( ndo , \"%s\" , istr ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( len < 10 <S2SV_ModEnd> ) ND_PRINT (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static int trusted_update ( struct key * key , struct key_preparsed_payload * prep ) { struct trusted_key_payload * p ; struct trusted_key_payload * new_p ; struct trusted_key_options * new_o ; size_t datalen = prep -> datalen ; char * datablob ; int ret = 0 ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) <S2SV_EndBug> return - ENOKEY ; p = key -> payload . data [ 0 ] ; if ( ! p -> migratable ) return - EPERM ; if ( datalen <= 0 || datalen > 32767 || ! prep -> data ) return - EINVAL ; datablob = kmalloc ( datalen + 1 , GFP_KERNEL ) ; if ( ! datablob ) return - ENOMEM ; new_o = trusted_options_alloc ( ) ; if ( ! new_o ) { ret = - ENOMEM ; goto out ; } new_p = trusted_payload_alloc ( key ) ; if ( ! new_p ) { ret = - ENOMEM ; goto out ; } memcpy ( datablob , prep -> data , datalen ) ; datablob [ datalen ] = '\\\\0' ; ret = datablob_parse ( datablob , new_p , new_o ) ; if ( ret != Opt_update ) { ret = - EINVAL ; kzfree ( new_p ) ; goto out ; } if ( ! new_o -> keyhandle ) { ret = - EINVAL ; kzfree ( new_p ) ; goto out ; } new_p -> migratable = p -> migratable ; new_p -> key_len = p -> key_len ; memcpy ( new_p -> key , p -> key , p -> key_len ) ; dump_payload ( p ) ; dump_payload ( new_p ) ; ret = key_seal ( new_p , new_o ) ; if ( ret < 0 ) { pr_info ( \"trusted_key:<S2SV_blank>key_seal<S2SV_blank>failed<S2SV_blank>(%d)\\\\n\" , ret ) ; kzfree ( new_p ) ; goto out ; } if ( new_o -> pcrlock ) { ret = pcrlock ( new_o -> pcrlock ) ; if ( ret < 0 ) { pr_info ( \"trusted_key:<S2SV_blank>pcrlock<S2SV_blank>failed<S2SV_blank>(%d)\\\\n\" , ret ) ; kzfree ( new_p ) ; goto out ; } } rcu_assign_keypointer ( key , new_p ) ; call_rcu ( & p -> rcu , trusted_rcu_free ) ; out : kzfree ( datablob ) ; kzfree ( new_o ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_negative ( key <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19815\n\n```\nCWE-476 static int f2fs_mpage_readpages ( struct address_space * mapping , struct list_head * pages , struct page * page , unsigned nr_pages , bool is_readahead ) { struct bio * bio = NULL ; sector_t last_block_in_bio = 0 ; struct inode * inode = mapping -> host ; struct f2fs_map_blocks map ; int ret = 0 ; map . m_pblk = 0 ; map . m_lblk = 0 ; map . m_len = 0 ; map . m_flags = 0 ; map . m_next_pgofs = NULL ; map . m_next_extent = NULL ; map . m_seg_type = NO_CHECK_TYPE ; map . m_may_create = false ; for ( ; nr_pages ; nr_pages -- ) { if ( pages ) { page = list_last_entry ( pages , struct page , lru ) ; prefetchw ( & page -> flags ) ; list_del ( & page -> lru ) ; if ( add_to_page_cache_lru ( page , mapping , <S2SV_StartBug> page -> index , <S2SV_EndBug> readahead_gfp_mask ( mapping ) ) ) goto next_page ; } ret = f2fs_read_single_page ( inode , page , nr_pages , & map , & bio , & last_block_in_bio , is_readahead ) ; if ( ret ) { SetPageError ( page ) ; zero_user_segment ( page , 0 , PAGE_SIZE ) ; unlock_page ( page ) ; } next_page : if ( pages ) put_page ( page ) ; } BUG_ON ( pages && ! list_empty ( pages ) ) ; if ( bio ) __submit_bio ( F2FS_I_SB ( inode ) , bio , DATA ) ; return pages ? 0 : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , mapping , page_index ( page ) <S2SV_ModEnd> , readahead_gfp_mask (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12589\n\n```\nCWE-732 void fslib_copy_libs ( const char * full_path ) { assert ( full_path ) ; if ( arg_debug || arg_debug_private_lib ) printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>fslib_copy_libs<S2SV_blank>%s\\\\n\" , full_path ) ; if ( access ( full_path , R_OK ) ) { if ( arg_debug || arg_debug_private_lib ) printf ( \"cannot<S2SV_blank>find<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>private-lib,<S2SV_blank>skipping...\\\\n\" , full_path ) ; return ; } unlink ( RUN_LIB_FILE ) ; create_empty_file_as_root ( RUN_LIB_FILE , 0644 ) ; if ( chown ( RUN_LIB_FILE , getuid ( ) , getgid ( ) ) ) errExit ( \"chown\" ) ; if ( arg_debug || arg_debug_private_lib ) printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>running<S2SV_blank>fldd<S2SV_blank>%s\\\\n\" , full_path ) ; sbox_run ( SBOX_USER | SBOX_SECCOMP | SBOX_CAPS_NONE , 3 , PATH_FLDD , full_path , RUN_LIB_FILE ) ; FILE * fp = fopen ( RUN_LIB_FILE , \"r\" ) ; if ( ! fp ) errExit ( \"fopen\" ) ; char buf [ MAXBUF ] ; while ( fgets ( buf , MAXBUF , fp ) ) { char * ptr = strchr ( buf , '\\\\n' ) ; if ( ptr ) * ptr = '\\\\0' ; fslib_duplicate ( buf ) ; } fclose ( fp ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fp ) ; unlink ( RUN_LIB_FILE ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1858\n\n```\nCWE-264 static int userns_install ( struct nsproxy * nsproxy , void * ns ) { struct user_namespace * user_ns = ns ; struct cred * cred ; if ( user_ns == current_user_ns ( ) ) return - EINVAL ; <S2SV_StartBug> if ( atomic_read ( & current -> mm -> mm_users ) > 1 ) <S2SV_EndBug> return - EINVAL ; if ( ! ns_capable ( user_ns , CAP_SYS_ADMIN ) ) return - EPERM ; cred = prepare_creds ( ) ; if ( ! cred ) return - ENOMEM ; put_user_ns ( cred -> user_ns ) ; set_cred_user_ns ( cred , get_user_ns ( user_ns ) ) ; return commit_creds ( cred ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mm_users ) > 1 ) return - EINVAL ; if ( current -> fs -> users !=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6380\n\n```\nCWE-20 static int aac_send_raw_srb ( struct aac_dev * dev , void __user * arg ) { struct fib * srbfib ; int status ; struct aac_srb * srbcmd = NULL ; struct user_aac_srb * user_srbcmd = NULL ; struct user_aac_srb __user * user_srb = arg ; struct aac_srb_reply __user * user_reply ; struct aac_srb_reply * reply ; u32 fibsize = 0 ; u32 flags = 0 ; s32 rcode = 0 ; u32 data_dir ; void __user * sg_user [ 32 ] ; void * sg_list [ 32 ] ; u32 sg_indx = 0 ; u32 byte_count = 0 ; u32 actual_fibsize64 , actual_fibsize = 0 ; int i ; if ( dev -> in_reset ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>send<S2SV_blank>raw<S2SV_blank>srb<S2SV_blank>-EBUSY\\\\n\" ) ) ; return - EBUSY ; } if ( ! capable ( CAP_SYS_ADMIN ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>No<S2SV_blank>permission<S2SV_blank>to<S2SV_blank>send<S2SV_blank>raw<S2SV_blank>srb\\\\n\" ) ) ; return - EPERM ; } if ( ! ( srbfib = aac_fib_alloc ( dev ) ) ) { return - ENOMEM ; } aac_fib_init ( srbfib ) ; srbfib -> hw_fib_va -> header . XferState &= ~ cpu_to_le32 ( FastResponseCapable ) ; srbcmd = ( struct aac_srb * ) fib_data ( srbfib ) ; memset ( sg_list , 0 , sizeof ( sg_list ) ) ; if ( copy_from_user ( & fibsize , & user_srb -> count , sizeof ( u32 ) ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>copy<S2SV_blank>data<S2SV_blank>size<S2SV_blank>from<S2SV_blank>user\\\\n\" ) ) ; rcode = - EFAULT ; goto cleanup ; } <S2SV_StartBug> if ( fibsize > ( dev -> max_fib_size - sizeof ( struct aac_fibhdr ) ) ) { <S2SV_EndBug> rcode = - EINVAL ; goto cleanup ; } user_srbcmd = kmalloc ( fibsize , GFP_KERNEL ) ; if ( ! user_srbcmd ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>make<S2SV_blank>a<S2SV_blank>copy<S2SV_blank>of<S2SV_blank>the<S2SV_blank>srb\\\\n\" ) ) ; rcode = - ENOMEM ; goto cleanup ; } if ( copy_from_user ( user_srbcmd , user_srb , fibsize ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>copy<S2SV_blank>srb<S2SV_blank>from<S2SV_blank>user\\\\n\" ) ) ; rcode = - EFAULT ; goto cleanup ; } user_reply = arg + fibsize ; flags = user_srbcmd -> flags ; srbcmd -> function = cpu_to_le32 ( SRBF_ExecuteScsi ) ; srbcmd -> channel = cpu_to_le32 ( user_srbcmd -> channel ) ; srbcmd -> id = cpu_to_le32 ( user_srbcmd -> id ) ; srbcmd -> lun = cpu_to_le32 ( user_srbcmd -> lun ) ; srbcmd -> timeout = cpu_to_le32 ( user_srbcmd -> timeout ) ; srbcmd -> flags = cpu_to_le32 ( flags ) ; srbcmd -> retry_limit = 0 ; srbcmd -> cdb_size = cpu_to_le32 ( user_srbcmd -> cdb_size ) ; memcpy ( srbcmd -> cdb , user_srbcmd -> cdb , sizeof ( srbcmd -> cdb ) ) ; switch ( flags & ( SRB_DataIn | SRB_DataOut ) ) { case SRB_DataOut : data_dir = DMA_TO_DEVICE ; break ; case ( SRB_DataIn | SRB_DataOut ) : data_dir = DMA_BIDIRECTIONAL ; break ; case SRB_DataIn : data_dir = DMA_FROM_DEVICE ; break ; default : data_dir = DMA_NONE ; } if ( user_srbcmd -> sg . count > ARRAY_SIZE ( sg_list ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>sg<S2SV_blank>entries<S2SV_blank>%d\\\\n\" , le32_to_cpu ( srbcmd -> sg . count ) ) ) ; rcode = - EINVAL ; goto cleanup ; } actual_fibsize = sizeof ( struct aac_srb ) - sizeof ( struct sgentry ) + ( ( user_srbcmd -> sg . count & 0xff ) * sizeof ( struct sgentry ) ) ; actual_fibsize64 = actual_fibsize + ( user_srbcmd -> sg . count & 0xff ) * ( sizeof ( struct sgentry64 ) - sizeof ( struct sgentry ) ) ; if ( ( actual_fibsize != fibsize ) && ( actual_fibsize64 != fibsize ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Bad<S2SV_blank>Size<S2SV_blank>specified<S2SV_blank>in<S2SV_blank>\" \"Raw<S2SV_blank>SRB<S2SV_blank>command<S2SV_blank>calculated<S2SV_blank>fibsize=%lu;%lu<S2SV_blank>\" \"user_srbcmd->sg.count=%d<S2SV_blank>aac_srb=%lu<S2SV_blank>sgentry=%lu;%lu<S2SV_blank>\" \"issued<S2SV_blank>fibsize=%d\\\\n\" , actual_fibsize , actual_fibsize64 , user_srbcmd -> sg . count , sizeof ( struct aac_srb ) , sizeof ( struct sgentry ) , sizeof ( struct sgentry64 ) , fibsize ) ) ; rcode = - EINVAL ; goto cleanup ; } if ( ( data_dir == DMA_NONE ) && user_srbcmd -> sg . count ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>SG<S2SV_blank>with<S2SV_blank>no<S2SV_blank>direction<S2SV_blank>specified<S2SV_blank>in<S2SV_blank>Raw<S2SV_blank>SRB<S2SV_blank>command\\\\n\" ) ) ; rcode = - EINVAL ; goto cleanup ; } byte_count = 0 ; if ( dev -> adapter_info . options & AAC_OPT_SGMAP_HOST64 ) { struct user_sgmap64 * upsg = ( struct user_sgmap64 * ) & user_srbcmd -> sg ; struct sgmap64 * psg = ( struct sgmap64 * ) & srbcmd -> sg ; if ( actual_fibsize64 == fibsize ) { actual_fibsize = actual_fibsize64 ; for ( i = 0 ; i < upsg -> count ; i ++ ) { u64 addr ; void * p ; if ( upsg -> sg [ i ] . count > ( ( dev -> adapter_info . options & AAC_OPT_NEW_COMM ) ? ( dev -> scsi_host_ptr -> max_sectors << 9 ) : 65536 ) ) { rcode = - EINVAL ; goto cleanup ; } p = kmalloc ( upsg -> sg [ i ] . count , GFP_KERNEL | __GFP_DMA ) ; if ( ! p ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>SG<S2SV_blank>buffer<S2SV_blank>-<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>buffer<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>of<S2SV_blank>%d\\\\n\" , upsg -> sg [ i ] . count , i , upsg -> count ) ) ; rcode = - ENOMEM ; goto cleanup ; } addr = ( u64 ) upsg -> sg [ i ] . addr [ 0 ] ; addr += ( ( u64 ) upsg -> sg [ i ] . addr [ 1 ] ) << 32 ; sg_user [ i ] = ( void __user * ) ( uintptr_t ) addr ; sg_list [ i ] = p ; sg_indx = i ; if ( flags & SRB_DataOut ) { if ( copy_from_user ( p , sg_user [ i ] , upsg -> sg [ i ] . count ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>copy<S2SV_blank>sg<S2SV_blank>data<S2SV_blank>from<S2SV_blank>user\\\\n\" ) ) ; rcode = - EFAULT ; goto cleanup ; } } addr = pci_map_single ( dev -> pdev , p , upsg -> sg [ i ] . count , data_dir ) ; psg -> sg [ i ] . addr [ 0 ] = cpu_to_le32 ( addr & 0xffffffff ) ; psg -> sg [ i ] . addr [ 1 ] = cpu_to_le32 ( addr >> 32 ) ; byte_count += upsg -> sg [ i ] . count ; psg -> sg [ i ] . count = cpu_to_le32 ( upsg -> sg [ i ] . count ) ; } } else { struct user_sgmap * usg ; usg = kmalloc ( actual_fibsize - sizeof ( struct aac_srb ) + sizeof ( struct sgmap ) , GFP_KERNEL ) ; if ( ! usg ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Allocation<S2SV_blank>error<S2SV_blank>in<S2SV_blank>Raw<S2SV_blank>SRB<S2SV_blank>command\\\\n\" ) ) ; rcode = - ENOMEM ; goto cleanup ; } memcpy ( usg , upsg , actual_fibsize - sizeof ( struct aac_srb ) + sizeof ( struct sgmap ) ) ; actual_fibsize = actual_fibsize64 ; for ( i = 0 ; i < usg -> count ; i ++ ) { u64 addr ; void * p ; if ( usg -> sg [ i ] . count > ( ( dev -> adapter_info . options & AAC_OPT_NEW_COMM ) ? ( dev -> scsi_host_ptr -> max_sectors << 9 ) : 65536 ) ) { kfree ( usg ) ; rcode = - EINVAL ; goto cleanup ; } p = kmalloc ( usg -> sg [ i ] . count , GFP_KERNEL | __GFP_DMA ) ; if ( ! p ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>SG<S2SV_blank>buffer<S2SV_blank>-<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>buffer<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>of<S2SV_blank>%d\\\\n\" , usg -> sg [ i ] . count , i , usg -> count ) ) ; kfree ( usg ) ; rcode = - ENOMEM ; goto cleanup ; } sg_user [ i ] = ( void __user * ) ( uintptr_t ) usg -> sg [ i ] . addr ; sg_list [ i ] = p ; sg_indx = i ; if ( flags & SRB_DataOut ) { if ( copy_from_user ( p , sg_user [ i ] , upsg -> sg [ i ] . count ) ) { kfree ( usg ) ; dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>copy<S2SV_blank>sg<S2SV_blank>data<S2SV_blank>from<S2SV_blank>user\\\\n\" ) ) ; rcode = - EFAULT ; goto cleanup ; } } addr = pci_map_single ( dev -> pdev , p , usg -> sg [ i ] . count , data_dir ) ; psg -> sg [ i ] . addr [ 0 ] = cpu_to_le32 ( addr & 0xffffffff ) ; psg -> sg [ i ] . addr [ 1 ] = cpu_to_le32 ( addr >> 32 ) ; byte_count += usg -> sg [ i ] . count ; psg -> sg [ i ] . count = cpu_to_le32 ( usg -> sg [ i ] . count ) ; } kfree ( usg ) ; } srbcmd -> count = cpu_to_le32 ( byte_count ) ; psg -> count = cpu_to_le32 ( sg_indx + 1 ) ; status = aac_fib_send ( ScsiPortCommand64 , srbfib , actual_fibsize , FsaNormal , 1 , 1 , NULL , NULL ) ; } else { struct user_sgmap * upsg = & user_srbcmd -> sg ; struct sgmap * psg = & srbcmd -> sg ; if ( actual_fibsize64 == fibsize ) { struct user_sgmap64 * usg = ( struct user_sgmap64 * ) upsg ; for ( i = 0 ; i < upsg -> count ; i ++ ) { uintptr_t addr ; void * p ; if ( usg -> sg [ i ] . count > ( ( dev -> adapter_info . options & AAC_OPT_NEW_COMM ) ? ( dev -> scsi_host_ptr -> max_sectors << 9 ) : 65536 ) ) { rcode = - EINVAL ; goto cleanup ; } p = kmalloc ( usg -> sg [ i ] . count , GFP_KERNEL | __GFP_DMA ) ; if ( ! p ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>SG<S2SV_blank>buffer<S2SV_blank>-<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>buffer<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>of<S2SV_blank>%d\\\\n\" , usg -> sg [ i ] . count , i , usg -> count ) ) ; rcode = - ENOMEM ; goto cleanup ; } addr = ( u64 ) usg -> sg [ i ] . addr [ 0 ] ; addr += ( ( u64 ) usg -> sg [ i ] . addr [ 1 ] ) << 32 ; sg_user [ i ] = ( void __user * ) addr ; sg_list [ i ] = p ; sg_indx = i ; if ( flags & SRB_DataOut ) { if ( copy_from_user ( p , sg_user [ i ] , usg -> sg [ i ] . count ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>copy<S2SV_blank>sg<S2SV_blank>data<S2SV_blank>from<S2SV_blank>user\\\\n\" ) ) ; rcode = - EFAULT ; goto cleanup ; } } addr = pci_map_single ( dev -> pdev , p , usg -> sg [ i ] . count , data_dir ) ; psg -> sg [ i ] . addr = cpu_to_le32 ( addr & 0xffffffff ) ; byte_count += usg -> sg [ i ] . count ; psg -> sg [ i ] . count = cpu_to_le32 ( usg -> sg [ i ] . count ) ; } } else { for ( i = 0 ; i < upsg -> count ; i ++ ) { dma_addr_t addr ; void * p ; if ( upsg -> sg [ i ] . count > ( ( dev -> adapter_info . options & AAC_OPT_NEW_COMM ) ? ( dev -> scsi_host_ptr -> max_sectors << 9 ) : 65536 ) ) { rcode = - EINVAL ; goto cleanup ; } p = kmalloc ( upsg -> sg [ i ] . count , GFP_KERNEL ) ; if ( ! p ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>SG<S2SV_blank>buffer<S2SV_blank>-<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>buffer<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>of<S2SV_blank>%d\\\\n\" , upsg -> sg [ i ] . count , i , upsg -> count ) ) ; rcode = - ENOMEM ; goto cleanup ; } sg_user [ i ] = ( void __user * ) ( uintptr_t ) upsg -> sg [ i ] . addr ; sg_list [ i ] = p ; sg_indx = i ; if ( flags & SRB_DataOut ) { if ( copy_from_user ( p , sg_user [ i ] , upsg -> sg [ i ] . count ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>copy<S2SV_blank>sg<S2SV_blank>data<S2SV_blank>from<S2SV_blank>user\\\\n\" ) ) ; rcode = - EFAULT ; goto cleanup ; } } addr = pci_map_single ( dev -> pdev , p , upsg -> sg [ i ] . count , data_dir ) ; psg -> sg [ i ] . addr = cpu_to_le32 ( addr ) ; byte_count += upsg -> sg [ i ] . count ; psg -> sg [ i ] . count = cpu_to_le32 ( upsg -> sg [ i ] . count ) ; } } srbcmd -> count = cpu_to_le32 ( byte_count ) ; psg -> count = cpu_to_le32 ( sg_indx + 1 ) ; status = aac_fib_send ( ScsiPortCommand , srbfib , actual_fibsize , FsaNormal , 1 , 1 , NULL , NULL ) ; } if ( status == - ERESTARTSYS ) { rcode = - ERESTARTSYS ; goto cleanup ; } if ( status != 0 ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>send<S2SV_blank>raw<S2SV_blank>srb<S2SV_blank>fib<S2SV_blank>to<S2SV_blank>hba\\\\n\" ) ) ; rcode = - ENXIO ; goto cleanup ; } if ( flags & SRB_DataIn ) { for ( i = 0 ; i <= sg_indx ; i ++ ) { byte_count = le32_to_cpu ( ( dev -> adapter_info . options & AAC_OPT_SGMAP_HOST64 ) ? ( ( struct sgmap64 * ) & srbcmd -> sg ) -> sg [ i ] . count : srbcmd -> sg . sg [ i ] . count ) ; if ( copy_to_user ( sg_user [ i ] , sg_list [ i ] , byte_count ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>copy<S2SV_blank>sg<S2SV_blank>data<S2SV_blank>to<S2SV_blank>user\\\\n\" ) ) ; rcode = - EFAULT ; goto cleanup ; } } } reply = ( struct aac_srb_reply * ) fib_data ( srbfib ) ; if ( copy_to_user ( user_reply , reply , sizeof ( struct aac_srb_reply ) ) ) { dprintk ( ( KERN_DEBUG \"aacraid:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>copy<S2SV_blank>reply<S2SV_blank>to<S2SV_blank>user\\\\n\" ) ) ; rcode = - EFAULT ; goto cleanup ; } cleanup : kfree ( user_srbcmd ) ; for ( i = 0 ; i <= sg_indx ; i ++ ) { kfree ( sg_list [ i ] ) ; } if ( rcode != - ERESTARTSYS ) { aac_fib_complete ( srbfib ) ; aac_fib_free ( srbfib ) ; } return rcode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ( fibsize < ( sizeof ( struct user_aac_srb ) - sizeof ( struct user_sgentry ) ) ) || ( <S2SV_ModStart> ( struct aac_fibhdr )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-347(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12607\n\n```\nCWE-347 void pointZZ_pDouble ( PointZZ_p * rop , const PointZZ_p * op , const CurveZZ_p * curve ) { <S2SV_StartBug> mpz_t numer , denom , lambda ; <S2SV_EndBug> mpz_inits ( numer , denom , lambda , NULL ) ; mpz_mul ( numer , op -> x , op -> x ) ; mpz_mul_ui ( numer , numer , 3 ) ; mpz_add ( numer , numer , curve -> a ) ; mpz_mul_ui ( denom , op -> y , 2 ) ; mpz_invert ( denom , denom , curve -> p ) ; mpz_mul ( lambda , numer , denom ) ; mpz_mod ( lambda , lambda , curve -> p ) ; mpz_mul ( rop -> x , lambda , lambda ) ; mpz_sub ( rop -> x , rop -> x , op -> x ) ; mpz_sub ( rop -> x , rop -> x , op -> x ) ; mpz_mod ( rop -> x , rop -> x , curve -> p ) ; mpz_sub ( rop -> y , op -> x , rop -> x ) ; mpz_mul ( rop -> y , lambda , rop -> y ) ; mpz_sub ( rop -> y , rop -> y , op -> y ) ; mpz_mod ( rop -> y , rop -> y , curve -> p ) ; mpz_clears ( numer , denom , lambda , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> curve ) { if ( pointZZ_pIsIdentityElement ( op ) ) { return pointZZ_pSetToIdentityElement ( rop ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_update_gf_useage_maps ( VP8_COMP * cpi , VP8_COMMON * cm , MACROBLOCK * x ) { int mb_row , mb_col ; MODE_INFO * this_mb_mode_info = cm -> mi ; x -> gf_active_ptr = ( signed char * ) cpi -> gf_active_flags ; if ( ( cm -> frame_type == KEY_FRAME ) || ( cm -> refresh_golden_frame ) ) { <S2SV_StartBug> vpx_memset ( cpi -> gf_active_flags , 1 , ( cm -> mb_rows * cm -> mb_cols ) ) ; <S2SV_EndBug> cpi -> gf_active_count = cm -> mb_rows * cm -> mb_cols ; } else { for ( mb_row = 0 ; mb_row < cm -> mb_rows ; mb_row ++ ) { for ( mb_col = 0 ; mb_col < cm -> mb_cols ; mb_col ++ ) { if ( ( this_mb_mode_info -> mbmi . ref_frame == GOLDEN_FRAME ) || ( this_mb_mode_info -> mbmi . ref_frame == ALTREF_FRAME ) ) { if ( * ( x -> gf_active_ptr ) == 0 ) { * ( x -> gf_active_ptr ) = 1 ; cpi -> gf_active_count ++ ; } } else if ( ( this_mb_mode_info -> mbmi . mode != ZEROMV ) && * ( x -> gf_active_ptr ) ) { * ( x -> gf_active_ptr ) = 0 ; cpi -> gf_active_count -- ; } x -> gf_active_ptr ++ ; this_mb_mode_info ++ ; } this_mb_mode_info ++ ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { memset <S2SV_ModEnd> ( cpi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2463\n\n```\nCWE-119 <S2SV_StartBug> void * H264SwDecMalloc ( u32 size ) <S2SV_EndBug> { # if defined ( CHECK_MEMORY_USAGE ) static u32 numBytes = 0 ; <S2SV_StartBug> numBytes += size ; <S2SV_EndBug> DEBUG ( ( \"Allocated<S2SV_blank>%d<S2SV_blank>bytes,<S2SV_blank>total<S2SV_blank>%d\\\\n\" , size , numBytes ) ) ; # endif <S2SV_StartBug> return malloc ( size ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( u32 size , u32 num ) { if ( size > UINT32_MAX / num ) { return NULL ; } <S2SV_ModEnd> # if defined <S2SV_ModStart> numBytes += size * num <S2SV_ModStart> malloc ( size * num\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10272\n\n```\nCWE-119 static int readContigStripsIntoBuffer ( TIFF * in , uint8 * buf ) { uint8 * bufp = buf ; int32 bytes_read = 0 ; uint32 strip , nstrips = TIFFNumberOfStrips ( in ) ; uint32 stripsize = TIFFStripSize ( in ) ; uint32 rows = 0 ; uint32 rps = TIFFGetFieldDefaulted ( in , TIFFTAG_ROWSPERSTRIP , & rps ) ; tsize_t scanline_size = TIFFScanlineSize ( in ) ; if ( scanline_size == 0 ) { TIFFError ( \"\" , \"TIFF<S2SV_blank>scanline<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero!\" ) ; return 0 ; } for ( strip = 0 ; strip < nstrips ; strip ++ ) { bytes_read = TIFFReadEncodedStrip ( in , strip , bufp , - 1 ) ; rows = bytes_read / scanline_size ; if ( ( strip < ( nstrips - 1 ) ) && ( bytes_read != ( int32 ) stripsize ) ) TIFFError ( \"\" , \"Strip<S2SV_blank>%d:<S2SV_blank>read<S2SV_blank>%lu<S2SV_blank>bytes,<S2SV_blank>strip<S2SV_blank>size<S2SV_blank>%lu\" , ( int ) strip + 1 , ( unsigned long ) bytes_read , ( unsigned long ) stripsize ) ; if ( bytes_read < 0 && ! ignore ) { TIFFError ( \"\" , \"Error<S2SV_blank>reading<S2SV_blank>strip<S2SV_blank>%lu<S2SV_blank>after<S2SV_blank>%lu<S2SV_blank>rows\" , ( unsigned long ) strip , ( unsigned long ) rows ) ; return 0 ; } <S2SV_StartBug> bufp += bytes_read ; <S2SV_EndBug> } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } bufp += stripsize <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19082\n\n```\nCWE-401 struct resource_pool * dce100_create_resource_pool ( uint8_t num_virtual_links , struct dc * dc ) { struct dce110_resource_pool * pool = kzalloc ( sizeof ( struct dce110_resource_pool ) , GFP_KERNEL ) ; if ( ! pool ) return NULL ; if ( construct ( num_virtual_links , dc , pool ) ) return & pool -> base ; <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> base ; kfree ( pool ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1958\n\n```\nCWE-264 static __inline__ int scm_check_creds ( struct ucred * creds ) { const struct cred * cred = current_cred ( ) ; kuid_t uid = make_kuid ( cred -> user_ns , creds -> uid ) ; kgid_t gid = make_kgid ( cred -> user_ns , creds -> gid ) ; if ( ! uid_valid ( uid ) || ! gid_valid ( gid ) ) return - EINVAL ; <S2SV_StartBug> if ( ( creds -> pid == task_tgid_vnr ( current ) || nsown_capable ( CAP_SYS_ADMIN ) ) && <S2SV_EndBug> ( ( uid_eq ( uid , cred -> uid ) || uid_eq ( uid , cred -> euid ) || uid_eq ( uid , cred -> suid ) ) || nsown_capable ( CAP_SETUID ) ) && ( ( gid_eq ( gid , cred -> gid ) || gid_eq ( gid , cred -> egid ) || gid_eq ( gid , cred -> sgid ) ) || nsown_capable ( CAP_SETGID ) ) ) { return 0 ; } return - EPERM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current ) || ns_capable ( current -> nsproxy -> pid_ns -> user_ns , <S2SV_ModEnd> CAP_SYS_ADMIN ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4299\n\n```\nCWE-264 static int read_exceptions ( struct pstore * ps , int ( * callback ) ( void * callback_context , chunk_t old , chunk_t new ) , void * callback_context ) { int r , full = 1 ; for ( ps -> current_area = 0 ; full ; ps -> current_area ++ ) { r = area_io ( ps , READ ) ; if ( r ) return r ; r = insert_exceptions ( ps , callback , callback_context , & full ) ; if ( r ) return r ; } ps -> current_area -- ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_area -- ; skip_metadata ( ps ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16996\n\n```\nCWE-119 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { <S2SV_StartBug> coerce_reg_to_32 ( dst_reg ) ; <S2SV_EndBug> <S2SV_StartBug> coerce_reg_to_32 ( & src_reg ) ; <S2SV_EndBug> } smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; switch ( opcode ) { case BPF_ADD : if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : if ( umax_val > 63 ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } if ( src_known ) dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_lshift ( tnum_unknown , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : if ( umax_val > 63 ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( src_known ) dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_rshift ( tnum_unknown , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BPF_ALU64 ) { coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size <S2SV_ModEnd> ( & src_reg <S2SV_ModStart> ( & src_reg , 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static void request_key_auth_describe ( const struct key * key , struct seq_file * m ) { struct request_key_auth * rka = key -> payload . data [ 0 ] ; seq_puts ( m , \"key:\" ) ; seq_puts ( m , key -> description ) ; <S2SV_StartBug> if ( key_is_instantiated ( key ) ) <S2SV_EndBug> seq_printf ( m , \"<S2SV_blank>pid:%d<S2SV_blank>ci:%zu\" , rka -> pid , rka -> callout_len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( key )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000380\n\n```\nCWE-200 static int snd_timer_user_tselect ( struct file * file , struct snd_timer_select __user * _tselect ) { struct snd_timer_user * tu ; struct snd_timer_select tselect ; char str [ 32 ] ; int err = 0 ; tu = file -> private_data ; if ( tu -> timeri ) { snd_timer_close ( tu -> timeri ) ; tu -> timeri = NULL ; } if ( copy_from_user ( & tselect , _tselect , sizeof ( tselect ) ) ) { err = - EFAULT ; goto __err ; } sprintf ( str , \"application<S2SV_blank>%i\" , current -> pid ) ; if ( tselect . id . dev_class != SNDRV_TIMER_CLASS_SLAVE ) tselect . id . dev_sclass = SNDRV_TIMER_SCLASS_APPLICATION ; err = snd_timer_open ( & tu -> timeri , str , & tselect . id , current -> pid ) ; if ( err < 0 ) goto __err ; <S2SV_StartBug> kfree ( tu -> queue ) ; <S2SV_EndBug> tu -> queue = NULL ; kfree ( tu -> tqueue ) ; tu -> tqueue = NULL ; if ( tu -> tread ) { tu -> tqueue = kmalloc ( tu -> queue_size * sizeof ( struct snd_timer_tread ) , GFP_KERNEL ) ; if ( tu -> tqueue == NULL ) err = - ENOMEM ; } else { tu -> queue = kmalloc ( tu -> queue_size * sizeof ( struct snd_timer_read ) , GFP_KERNEL ) ; if ( tu -> queue == NULL ) err = - ENOMEM ; } if ( err < 0 ) { snd_timer_close ( tu -> timeri ) ; tu -> timeri = NULL ; } else { tu -> timeri -> flags |= SNDRV_TIMER_IFLG_FAST ; tu -> timeri -> callback = tu -> tread ? snd_timer_user_tinterrupt : snd_timer_user_interrupt ; tu -> timeri -> ccallback = snd_timer_user_ccallback ; tu -> timeri -> callback_data = ( void * ) tu ; tu -> timeri -> disconnect = snd_timer_user_disconnect ; } __err : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto __err ; tu -> qhead = tu -> qtail = tu -> qused = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11833\n\n```\nCWE-200 static int ext4_ext_split ( handle_t * handle , struct inode * inode , unsigned int flags , struct ext4_ext_path * path , struct ext4_extent * newext , int at ) { struct buffer_head * bh = NULL ; int depth = ext_depth ( inode ) ; struct ext4_extent_header * neh ; struct ext4_extent_idx * fidx ; int i = at , k , m , a ; ext4_fsblk_t newblock , oldblock ; __le32 border ; ext4_fsblk_t * ablocks = NULL ; int err = 0 ; <S2SV_StartBug> if ( unlikely ( path [ depth ] . p_ext > EXT_MAX_EXTENT ( path [ depth ] . p_hdr ) ) ) { <S2SV_EndBug> EXT4_ERROR_INODE ( inode , \"p_ext<S2SV_blank>><S2SV_blank>EXT_MAX_EXTENT!\" ) ; return - EFSCORRUPTED ; } if ( path [ depth ] . p_ext != EXT_MAX_EXTENT ( path [ depth ] . p_hdr ) ) { border = path [ depth ] . p_ext [ 1 ] . ee_block ; ext_debug ( \"leaf<S2SV_blank>will<S2SV_blank>be<S2SV_blank>split.\" \"<S2SV_blank>next<S2SV_blank>leaf<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>%d\\\\n\" , le32_to_cpu ( border ) ) ; } else { border = newext -> ee_block ; ext_debug ( \"leaf<S2SV_blank>will<S2SV_blank>be<S2SV_blank>added.\" \"<S2SV_blank>next<S2SV_blank>leaf<S2SV_blank>starts<S2SV_blank>at<S2SV_blank>%d\\\\n\" , le32_to_cpu ( border ) ) ; } ablocks = kcalloc ( depth , sizeof ( ext4_fsblk_t ) , GFP_NOFS ) ; if ( ! ablocks ) return - ENOMEM ; ext_debug ( \"allocate<S2SV_blank>%d<S2SV_blank>blocks<S2SV_blank>for<S2SV_blank>indexes/leaf\\\\n\" , depth - at ) ; for ( a = 0 ; a < depth - at ; a ++ ) { newblock = ext4_ext_new_meta_block ( handle , inode , path , newext , & err , flags ) ; if ( newblock == 0 ) goto cleanup ; ablocks [ a ] = newblock ; } newblock = ablocks [ -- a ] ; if ( unlikely ( newblock == 0 ) ) { EXT4_ERROR_INODE ( inode , \"newblock<S2SV_blank>==<S2SV_blank>0!\" ) ; err = - EFSCORRUPTED ; goto cleanup ; } bh = sb_getblk_gfp ( inode -> i_sb , newblock , __GFP_MOVABLE | GFP_NOFS ) ; if ( unlikely ( ! bh ) ) { err = - ENOMEM ; goto cleanup ; } lock_buffer ( bh ) ; err = ext4_journal_get_create_access ( handle , bh ) ; if ( err ) goto cleanup ; neh = ext_block_hdr ( bh ) ; neh -> eh_entries = 0 ; neh -> eh_max = cpu_to_le16 ( ext4_ext_space_block ( inode , 0 ) ) ; neh -> eh_magic = EXT4_EXT_MAGIC ; neh -> eh_depth = 0 ; if ( unlikely ( path [ depth ] . p_hdr -> eh_entries != path [ depth ] . p_hdr -> eh_max ) ) { EXT4_ERROR_INODE ( inode , \"eh_entries<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>eh_max<S2SV_blank>%d!\" , path [ depth ] . p_hdr -> eh_entries , path [ depth ] . p_hdr -> eh_max ) ; err = - EFSCORRUPTED ; goto cleanup ; } m = EXT_MAX_EXTENT ( path [ depth ] . p_hdr ) - path [ depth ] . p_ext ++ ; ext4_ext_show_move ( inode , path , newblock , depth ) ; if ( m ) { struct ext4_extent * ex ; ex = EXT_FIRST_EXTENT ( neh ) ; memmove ( ex , path [ depth ] . p_ext , sizeof ( struct ext4_extent ) * m ) ; le16_add_cpu ( & neh -> eh_entries , m ) ; } <S2SV_StartBug> ext4_extent_block_csum_set ( inode , neh ) ; <S2SV_EndBug> set_buffer_uptodate ( bh ) ; unlock_buffer ( bh ) ; err = ext4_handle_dirty_metadata ( handle , inode , bh ) ; if ( err ) goto cleanup ; brelse ( bh ) ; bh = NULL ; if ( m ) { err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto cleanup ; le16_add_cpu ( & path [ depth ] . p_hdr -> eh_entries , - m ) ; err = ext4_ext_dirty ( handle , inode , path + depth ) ; if ( err ) goto cleanup ; } k = depth - at - 1 ; if ( unlikely ( k < 0 ) ) { EXT4_ERROR_INODE ( inode , \"k<S2SV_blank>%d<S2SV_blank><<S2SV_blank>0!\" , k ) ; err = - EFSCORRUPTED ; goto cleanup ; } if ( k ) ext_debug ( \"create<S2SV_blank>%d<S2SV_blank>intermediate<S2SV_blank>indices\\\\n\" , k ) ; i = depth - 1 ; while ( k -- ) { oldblock = newblock ; newblock = ablocks [ -- a ] ; bh = sb_getblk ( inode -> i_sb , newblock ) ; if ( unlikely ( ! bh ) ) { err = - ENOMEM ; goto cleanup ; } lock_buffer ( bh ) ; err = ext4_journal_get_create_access ( handle , bh ) ; if ( err ) goto cleanup ; neh = ext_block_hdr ( bh ) ; neh -> eh_entries = cpu_to_le16 ( 1 ) ; neh -> eh_magic = EXT4_EXT_MAGIC ; neh -> eh_max = cpu_to_le16 ( ext4_ext_space_block_idx ( inode , 0 ) ) ; neh -> eh_depth = cpu_to_le16 ( depth - i ) ; fidx = EXT_FIRST_INDEX ( neh ) ; fidx -> ei_block = border ; ext4_idx_store_pblock ( fidx , oldblock ) ; ext_debug ( \"int.index<S2SV_blank>at<S2SV_blank>%d<S2SV_blank>(block<S2SV_blank>%llu):<S2SV_blank>%u<S2SV_blank>-><S2SV_blank>%llu\\\\n\" , i , newblock , le32_to_cpu ( border ) , oldblock ) ; if ( unlikely ( EXT_MAX_INDEX ( path [ i ] . p_hdr ) != EXT_LAST_INDEX ( path [ i ] . p_hdr ) ) ) { EXT4_ERROR_INODE ( inode , \"EXT_MAX_INDEX<S2SV_blank>!=<S2SV_blank>EXT_LAST_INDEX<S2SV_blank>ee_block<S2SV_blank>%d!\" , le32_to_cpu ( path [ i ] . p_ext -> ee_block ) ) ; err = - EFSCORRUPTED ; goto cleanup ; } m = EXT_MAX_INDEX ( path [ i ] . p_hdr ) - path [ i ] . p_idx ++ ; ext_debug ( \"cur<S2SV_blank>0x%p,<S2SV_blank>last<S2SV_blank>0x%p\\\\n\" , path [ i ] . p_idx , EXT_MAX_INDEX ( path [ i ] . p_hdr ) ) ; ext4_ext_show_move ( inode , path , newblock , i ) ; if ( m ) { memmove ( ++ fidx , path [ i ] . p_idx , sizeof ( struct ext4_extent_idx ) * m ) ; le16_add_cpu ( & neh -> eh_entries , m ) ; } <S2SV_StartBug> ext4_extent_block_csum_set ( inode , neh ) ; <S2SV_EndBug> set_buffer_uptodate ( bh ) ; unlock_buffer ( bh ) ; err = ext4_handle_dirty_metadata ( handle , inode , bh ) ; if ( err ) goto cleanup ; brelse ( bh ) ; bh = NULL ; if ( m ) { err = ext4_ext_get_access ( handle , inode , path + i ) ; if ( err ) goto cleanup ; le16_add_cpu ( & path [ i ] . p_hdr -> eh_entries , - m ) ; err = ext4_ext_dirty ( handle , inode , path + i ) ; if ( err ) goto cleanup ; } i -- ; } err = ext4_ext_insert_index ( handle , inode , path + at , le32_to_cpu ( border ) , newblock ) ; cleanup : if ( bh ) { if ( buffer_locked ( bh ) ) unlock_buffer ( bh ) ; brelse ( bh ) ; } if ( err ) { for ( i = 0 ; i < depth ; i ++ ) { if ( ! ablocks [ i ] ) continue ; ext4_free_blocks ( handle , inode , NULL , ablocks [ i ] , 1 , EXT4_FREE_BLOCKS_METADATA ) ; } } kfree ( ablocks ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; size_t ext_size = 0 ; <S2SV_ModStart> ) ; } ext_size = sizeof ( struct ext4_extent_header ) + sizeof ( struct ext4_extent ) * le16_to_cpu ( neh -> eh_entries ) ; memset ( bh -> b_data + ext_size , 0 , inode -> i_sb -> s_blocksize - ext_size ) ; <S2SV_ModStart> ) ; } ext_size = sizeof ( struct ext4_extent_header ) + ( sizeof ( struct ext4_extent ) * le16_to_cpu ( neh -> eh_entries ) ) ; memset ( bh -> b_data + ext_size , 0 , inode -> i_sb -> s_blocksize - ext_size ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19059\n\n```\nCWE-401 int iwl_pcie_ctxt_info_gen3_init ( struct iwl_trans * trans , const struct fw_img * fw ) { struct iwl_trans_pcie * trans_pcie = IWL_TRANS_GET_PCIE_TRANS ( trans ) ; struct iwl_context_info_gen3 * ctxt_info_gen3 ; struct iwl_prph_scratch * prph_scratch ; struct iwl_prph_scratch_ctrl_cfg * prph_sc_ctrl ; struct iwl_prph_info * prph_info ; void * iml_img ; u32 control_flags = 0 ; int ret ; int cmdq_size = max_t ( u32 , IWL_CMD_QUEUE_SIZE , trans -> cfg -> min_txq_size ) ; prph_scratch = dma_alloc_coherent ( trans -> dev , sizeof ( * prph_scratch ) , & trans_pcie -> prph_scratch_dma_addr , GFP_KERNEL ) ; if ( ! prph_scratch ) return - ENOMEM ; prph_sc_ctrl = & prph_scratch -> ctrl_cfg ; prph_sc_ctrl -> version . version = 0 ; prph_sc_ctrl -> version . mac_id = cpu_to_le16 ( ( u16 ) iwl_read32 ( trans , CSR_HW_REV ) ) ; prph_sc_ctrl -> version . size = cpu_to_le16 ( sizeof ( * prph_scratch ) / 4 ) ; control_flags = IWL_PRPH_SCRATCH_RB_SIZE_4K | IWL_PRPH_SCRATCH_MTR_MODE | ( IWL_PRPH_MTR_FORMAT_256B & IWL_PRPH_SCRATCH_MTR_FORMAT ) | IWL_PRPH_SCRATCH_EARLY_DEBUG_EN | IWL_PRPH_SCRATCH_EDBG_DEST_DRAM ; prph_sc_ctrl -> control . control_flags = cpu_to_le32 ( control_flags ) ; prph_sc_ctrl -> rbd_cfg . free_rbd_addr = cpu_to_le64 ( trans_pcie -> rxq -> bd_dma ) ; if ( ! iwl_trans_dbg_ini_valid ( trans ) ) iwl_pcie_alloc_fw_monitor ( trans , 0 ) ; if ( trans -> dbg . num_blocks ) { prph_sc_ctrl -> hwm_cfg . hwm_base_addr = cpu_to_le64 ( trans -> dbg . fw_mon [ 0 ] . physical ) ; prph_sc_ctrl -> hwm_cfg . hwm_size = cpu_to_le32 ( trans -> dbg . fw_mon [ 0 ] . size ) ; } ret = iwl_pcie_init_fw_sec ( trans , fw , & prph_scratch -> dram ) ; <S2SV_StartBug> if ( ret ) { <S2SV_EndBug> dma_free_coherent ( trans -> dev , sizeof ( * prph_scratch ) , prph_scratch , trans_pcie -> prph_scratch_dma_addr ) ; return ret ; } prph_info = dma_alloc_coherent ( trans -> dev , sizeof ( * prph_info ) , & trans_pcie -> prph_info_dma_addr , GFP_KERNEL ) ; <S2SV_StartBug> if ( ! prph_info ) <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> ctxt_info_gen3 = dma_alloc_coherent ( trans -> dev , <S2SV_EndBug> sizeof ( * ctxt_info_gen3 ) , & trans_pcie -> ctxt_info_dma_addr , GFP_KERNEL ) ; if ( ! ctxt_info_gen3 ) return - ENOMEM ; ctxt_info_gen3 -> prph_info_base_addr = cpu_to_le64 ( trans_pcie -> prph_info_dma_addr ) ; ctxt_info_gen3 -> prph_scratch_base_addr = cpu_to_le64 ( trans_pcie -> prph_scratch_dma_addr ) ; ctxt_info_gen3 -> prph_scratch_size = cpu_to_le32 ( sizeof ( * prph_scratch ) ) ; ctxt_info_gen3 -> cr_head_idx_arr_base_addr = cpu_to_le64 ( trans_pcie -> rxq -> rb_stts_dma ) ; ctxt_info_gen3 -> tr_tail_idx_arr_base_addr = cpu_to_le64 ( trans_pcie -> rxq -> tr_tail_dma ) ; ctxt_info_gen3 -> cr_tail_idx_arr_base_addr = cpu_to_le64 ( trans_pcie -> rxq -> cr_tail_dma ) ; ctxt_info_gen3 -> cr_idx_arr_size = cpu_to_le16 ( IWL_NUM_OF_COMPLETION_RINGS ) ; ctxt_info_gen3 -> tr_idx_arr_size = cpu_to_le16 ( IWL_NUM_OF_TRANSFER_RINGS ) ; ctxt_info_gen3 -> mtr_base_addr = cpu_to_le64 ( trans_pcie -> txq [ trans_pcie -> cmd_queue ] -> dma_addr ) ; ctxt_info_gen3 -> mcr_base_addr = cpu_to_le64 ( trans_pcie -> rxq -> used_bd_dma ) ; ctxt_info_gen3 -> mtr_size = cpu_to_le16 ( TFD_QUEUE_CB_SIZE ( cmdq_size ) ) ; ctxt_info_gen3 -> mcr_size = cpu_to_le16 ( RX_QUEUE_CB_SIZE ( MQ_RX_TABLE_SIZE ) ) ; trans_pcie -> ctxt_info_gen3 = ctxt_info_gen3 ; trans_pcie -> prph_info = prph_info ; trans_pcie -> prph_scratch = prph_scratch ; iml_img = dma_alloc_coherent ( trans -> dev , trans -> iml_len , & trans_pcie -> iml_dma_addr , GFP_KERNEL ) ; if ( ! iml_img ) return - ENOMEM ; memcpy ( iml_img , trans -> iml , trans -> iml_len ) ; iwl_enable_fw_load_int_ctx_info ( trans ) ; iwl_write64 ( trans , CSR_CTXT_INFO_ADDR , trans_pcie -> ctxt_info_dma_addr ) ; iwl_write64 ( trans , CSR_IML_DATA_ADDR , trans_pcie -> iml_dma_addr ) ; iwl_write32 ( trans , CSR_IML_SIZE_ADDR , trans -> iml_len ) ; iwl_set_bit ( trans , CSR_CTXT_INFO_BOOT_CTRL , CSR_AUTO_FUNC_BOOT_ENA ) ; if ( trans -> trans_cfg -> device_family >= IWL_DEVICE_FAMILY_AX210 ) iwl_write_umac_prph ( trans , UREG_CPU_INIT_RUN , 1 ) ; else iwl_set_bit ( trans , CSR_GP_CNTRL , CSR_AUTO_FUNC_INIT ) ; return 0 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ret ) goto err_free_prph_scratch ; <S2SV_ModEnd> prph_info = dma_alloc_coherent <S2SV_ModStart> ( ! prph_info ) { ret = - ENOMEM ; goto err_free_prph_scratch ; } ctxt_info_gen3 = dma_alloc_coherent ( trans -> dev , sizeof ( * ctxt_info_gen3 ) , & trans_pcie -> ctxt_info_dma_addr , GFP_KERNEL ) ; if ( ! ctxt_info_gen3 ) { ret = - ENOMEM ; goto err_free_prph_info ; } ctxt_info_gen3 -> prph_info_base_addr = cpu_to_le64 ( trans_pcie -> prph_info_dma_addr ) ; ctxt_info_gen3 -> prph_scratch_base_addr = cpu_to_le64 ( trans_pcie -> prph_scratch_dma_addr ) ; ctxt_info_gen3 -> prph_scratch_size = cpu_to_le32 ( sizeof ( * prph_scratch ) ) ; ctxt_info_gen3 -> cr_head_idx_arr_base_addr = cpu_to_le64 ( trans_pcie -> rxq -> rb_stts_dma ) ; ctxt_info_gen3 -> tr_tail_idx_arr_base_addr = cpu_to_le64 ( trans_pcie -> rxq -> tr_tail_dma ) ; ctxt_info_gen3 -> cr_tail_idx_arr_base_addr = cpu_to_le64 ( trans_pcie -> rxq -> cr_tail_dma ) ; ctxt_info_gen3 -> cr_idx_arr_size = cpu_to_le16 ( IWL_NUM_OF_COMPLETION_RINGS ) ; ctxt_info_gen3 -> tr_idx_arr_size = cpu_to_le16 ( IWL_NUM_OF_TRANSFER_RINGS ) ; ctxt_info_gen3 -> mtr_base_addr = cpu_to_le64 ( trans_pcie -> txq [ trans_pcie -> cmd_queue ] -> dma_addr ) ; ctxt_info_gen3 -> mcr_base_addr = cpu_to_le64 ( trans_pcie -> rxq -> used_bd_dma ) ; ctxt_info_gen3 -> mtr_size = cpu_to_le16 ( TFD_QUEUE_CB_SIZE ( cmdq_size ) ) ; ctxt_info_gen3 -> mcr_size = cpu_to_le16 ( RX_QUEUE_CB_SIZE ( MQ_RX_TABLE_SIZE ) ) ; trans_pcie -> ctxt_info_gen3 = ctxt_info_gen3 ; trans_pcie -> prph_info = prph_info ; trans_pcie -> prph_scratch = prph_scratch ; iml_img = dma_alloc_coherent ( trans -> dev , trans -> iml_len , & trans_pcie -> iml_dma_addr , GFP_KERNEL ) ; if ( ! iml_img <S2SV_ModStart> - ENOMEM ; <S2SV_ModEnd> memcpy ( iml_img <S2SV_ModStart> return 0 ; err_free_prph_info : dma_free_coherent ( trans -> dev , sizeof ( * prph_info ) , prph_info , trans_pcie -> prph_info_dma_addr ) ; err_free_prph_scratch : dma_free_coherent ( trans -> dev , sizeof ( * prph_scratch ) , prph_scratch , trans_pcie -> prph_scratch_dma_addr ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7016\n\n```\nCWE-119 static int get_siz ( Jpeg2000DecoderContext * s ) { int i ; int ncomponents ; uint32_t log2_chroma_wh = 0 ; const enum AVPixelFormat * possible_fmts = NULL ; int possible_fmts_nb = 0 ; if ( bytestream2_get_bytes_left ( & s -> g ) < 36 ) return AVERROR_INVALIDDATA ; s -> avctx -> profile = bytestream2_get_be16u ( & s -> g ) ; s -> width = bytestream2_get_be32u ( & s -> g ) ; s -> height = bytestream2_get_be32u ( & s -> g ) ; s -> image_offset_x = bytestream2_get_be32u ( & s -> g ) ; s -> image_offset_y = bytestream2_get_be32u ( & s -> g ) ; s -> tile_width = bytestream2_get_be32u ( & s -> g ) ; s -> tile_height = bytestream2_get_be32u ( & s -> g ) ; s -> tile_offset_x = bytestream2_get_be32u ( & s -> g ) ; s -> tile_offset_y = bytestream2_get_be32u ( & s -> g ) ; ncomponents = bytestream2_get_be16u ( & s -> g ) ; if ( ncomponents <= 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components:<S2SV_blank>%d\\\\n\" , s -> ncomponents ) ; return AVERROR_INVALIDDATA ; } if ( ncomponents > 4 ) { avpriv_request_sample ( s -> avctx , \"Support<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>components\" , s -> ncomponents ) ; return AVERROR_PATCHWELCOME ; } s -> ncomponents = ncomponents ; if ( s -> tile_width <= 0 || s -> tile_height <= 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>tile<S2SV_blank>dimension<S2SV_blank>%dx%d.\\\\n\" , s -> tile_width , s -> tile_height ) ; return AVERROR_INVALIDDATA ; } if ( bytestream2_get_bytes_left ( & s -> g ) < 3 * s -> ncomponents ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < s -> ncomponents ; i ++ ) { uint8_t x = bytestream2_get_byteu ( & s -> g ) ; s -> cbps [ i ] = ( x & 0x7f ) + 1 ; s -> precision = FFMAX ( s -> cbps [ i ] , s -> precision ) ; s -> sgnd [ i ] = ! ! ( x & 0x80 ) ; s -> cdx [ i ] = bytestream2_get_byteu ( & s -> g ) ; s -> cdy [ i ] = bytestream2_get_byteu ( & s -> g ) ; <S2SV_StartBug> if ( ! s -> cdx [ i ] || ! s -> cdy [ i ] ) { <S2SV_EndBug> av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>sample<S2SV_blank>seperation\\\\n\" ) ; return AVERROR_INVALIDDATA ; } log2_chroma_wh |= s -> cdy [ i ] >> 1 << i * 4 | s -> cdx [ i ] >> 1 << i * 4 + 2 ; } s -> numXtiles = ff_jpeg2000_ceildiv ( s -> width - s -> tile_offset_x , s -> tile_width ) ; s -> numYtiles = ff_jpeg2000_ceildiv ( s -> height - s -> tile_offset_y , s -> tile_height ) ; if ( s -> numXtiles * ( uint64_t ) s -> numYtiles > INT_MAX / sizeof ( * s -> tile ) ) { s -> numXtiles = s -> numYtiles = 0 ; return AVERROR ( EINVAL ) ; } s -> tile = av_mallocz_array ( s -> numXtiles * s -> numYtiles , sizeof ( * s -> tile ) ) ; if ( ! s -> tile ) { s -> numXtiles = s -> numYtiles = 0 ; return AVERROR ( ENOMEM ) ; } for ( i = 0 ; i < s -> numXtiles * s -> numYtiles ; i ++ ) { Jpeg2000Tile * tile = s -> tile + i ; tile -> comp = av_mallocz ( s -> ncomponents * sizeof ( * tile -> comp ) ) ; if ( ! tile -> comp ) return AVERROR ( ENOMEM ) ; } s -> avctx -> width = ff_jpeg2000_ceildivpow2 ( s -> width - s -> image_offset_x , s -> reduction_factor ) ; s -> avctx -> height = ff_jpeg2000_ceildivpow2 ( s -> height - s -> image_offset_y , s -> reduction_factor ) ; if ( s -> avctx -> profile == FF_PROFILE_JPEG2000_DCINEMA_2K || s -> avctx -> profile == FF_PROFILE_JPEG2000_DCINEMA_4K ) { possible_fmts = xyz_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( xyz_pix_fmts ) ; } else { switch ( s -> colour_space ) { case 16 : possible_fmts = rgb_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( rgb_pix_fmts ) ; break ; case 17 : possible_fmts = gray_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( gray_pix_fmts ) ; break ; case 18 : possible_fmts = yuv_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( yuv_pix_fmts ) ; break ; default : possible_fmts = all_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( all_pix_fmts ) ; break ; } } for ( i = 0 ; i < possible_fmts_nb ; ++ i ) { if ( pix_fmt_match ( possible_fmts [ i ] , ncomponents , s -> precision , log2_chroma_wh , s -> pal8 ) ) { s -> avctx -> pix_fmt = possible_fmts [ i ] ; break ; } } if ( s -> avctx -> pix_fmt == AV_PIX_FMT_NONE ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>pix_fmt,<S2SV_blank>profile:<S2SV_blank>%d,<S2SV_blank>colour_space:<S2SV_blank>%d,<S2SV_blank>\" \"components:<S2SV_blank>%d,<S2SV_blank>precision:<S2SV_blank>%d,<S2SV_blank>\" \"cdx[1]:<S2SV_blank>%d,<S2SV_blank>cdy[1]:<S2SV_blank>%d,<S2SV_blank>cdx[2]:<S2SV_blank>%d,<S2SV_blank>cdy[2]:<S2SV_blank>%d\\\\n\" , s -> avctx -> profile , s -> colour_space , ncomponents , s -> precision , ncomponents > 2 ? s -> cdx [ 1 ] : 0 , ncomponents > 2 ? s -> cdy [ 1 ] : 0 , ncomponents > 2 ? s -> cdx [ 2 ] : 0 , ncomponents > 2 ? s -> cdy [ 2 ] : 0 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ] || s -> cdx [ i ] == 3 || s -> cdx [ i ] > 4 || <S2SV_ModStart> [ i ] || s -> cdy [ i ] == 3 || s -> cdy [ i ] > 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3698\n\n```\nCWE-284 static int ndp_sock_recv ( struct ndp * ndp ) { struct ndp_msg * msg ; enum ndp_msg_type msg_type ; size_t len ; int err ; msg = ndp_msg_alloc ( ) ; if ( ! msg ) return - ENOMEM ; len = ndp_msg_payload_maxlen ( msg ) ; err = myrecvfrom6 ( ndp -> sock , msg -> buf , & len , 0 , <S2SV_StartBug> & msg -> addrto , & msg -> ifindex ) ; <S2SV_EndBug> if ( err ) { err ( ndp , \"Failed<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>message\" ) ; goto free_msg ; } <S2SV_StartBug> dbg ( ndp , \"rcvd<S2SV_blank>from:<S2SV_blank>%s,<S2SV_blank>ifindex:<S2SV_blank>%u\" , <S2SV_EndBug> <S2SV_StartBug> str_in6_addr ( & msg -> addrto ) , msg -> ifindex ) ; <S2SV_EndBug> if ( len < sizeof ( * msg -> icmp6_hdr ) ) { warn ( ndp , \"rcvd<S2SV_blank>icmp6<S2SV_blank>packet<S2SV_blank>too<S2SV_blank>short<S2SV_blank>(%luB)\" , len ) ; err = 0 ; goto free_msg ; } err = ndp_msg_type_by_raw_type ( & msg_type , msg -> icmp6_hdr -> icmp6_type ) ; if ( err ) { err = 0 ; goto free_msg ; } ndp_msg_init ( msg , msg_type ) ; ndp_msg_payload_len_set ( msg , len ) ; if ( ! ndp_msg_check_valid ( msg ) ) { warn ( ndp , \"rcvd<S2SV_blank>invalid<S2SV_blank>ND<S2SV_blank>message\" ) ; err = 0 ; goto free_msg ; } dbg ( ndp , \"rcvd<S2SV_blank>%s,<S2SV_blank>len:<S2SV_blank>%zuB\" , ndp_msg_type_info ( msg_type ) -> strabbr , len ) ; if ( ! ndp_msg_check_opts ( msg ) ) { err = 0 ; goto free_msg ; } err = ndp_call_handlers ( ndp , msg ) ; ; free_msg : ndp_msg_destroy ( msg ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> msg -> ifindex , & msg -> hoplimit <S2SV_ModStart> ( ndp , \"rcvd<S2SV_blank>from:<S2SV_blank>%s,<S2SV_blank>ifindex:<S2SV_blank>%u,<S2SV_blank>hoplimit:<S2SV_blank>%d\" <S2SV_ModEnd> , str_in6_addr ( <S2SV_ModStart> msg -> ifindex , msg -> hoplimit ) ; if ( msg -> hoplimit != 255 ) { warn ( ndp , \"ignoring<S2SV_blank>packet<S2SV_blank>with<S2SV_blank>bad<S2SV_blank>hop<S2SV_blank>limit<S2SV_blank>(%d)\" , msg -> hoplimit ) ; err = 0 ; goto free_msg ; } <S2SV_ModEnd> if ( len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4167\n\n```\nCWE-189 static int udf_read_inode ( struct inode * inode , bool hidden_inode ) { struct buffer_head * bh = NULL ; struct fileEntry * fe ; struct extendedFileEntry * efe ; uint16_t ident ; struct udf_inode_info * iinfo = UDF_I ( inode ) ; struct udf_sb_info * sbi = UDF_SB ( inode -> i_sb ) ; struct kernel_lb_addr * iloc = & iinfo -> i_location ; unsigned int link_count ; unsigned int indirections = 0 ; int bs = inode -> i_sb -> s_blocksize ; int ret = - EIO ; reread : if ( iloc -> logicalBlockNum >= sbi -> s_partmaps [ iloc -> partitionReferenceNum ] . s_partition_len ) { udf_debug ( \"block=%d,<S2SV_blank>partition=%d<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , iloc -> logicalBlockNum , iloc -> partitionReferenceNum ) ; return - EIO ; } bh = udf_read_ptagged ( inode -> i_sb , iloc , 0 , & ident ) ; if ( ! bh ) { udf_err ( inode -> i_sb , \"(ino<S2SV_blank>%ld)<S2SV_blank>failed<S2SV_blank>!bh\\\\n\" , inode -> i_ino ) ; return - EIO ; } if ( ident != TAG_IDENT_FE && ident != TAG_IDENT_EFE && ident != TAG_IDENT_USE ) { udf_err ( inode -> i_sb , \"(ino<S2SV_blank>%ld)<S2SV_blank>failed<S2SV_blank>ident=%d\\\\n\" , inode -> i_ino , ident ) ; goto out ; } fe = ( struct fileEntry * ) bh -> b_data ; efe = ( struct extendedFileEntry * ) bh -> b_data ; if ( fe -> icbTag . strategyType == cpu_to_le16 ( 4096 ) ) { struct buffer_head * ibh ; ibh = udf_read_ptagged ( inode -> i_sb , iloc , 1 , & ident ) ; if ( ident == TAG_IDENT_IE && ibh ) { struct kernel_lb_addr loc ; struct indirectEntry * ie ; ie = ( struct indirectEntry * ) ibh -> b_data ; loc = lelb_to_cpu ( ie -> indirectICB . extLocation ) ; if ( ie -> indirectICB . extLength ) { brelse ( ibh ) ; memcpy ( & iinfo -> i_location , & loc , sizeof ( struct kernel_lb_addr ) ) ; if ( ++ indirections > UDF_MAX_ICB_NESTING ) { udf_err ( inode -> i_sb , \"too<S2SV_blank>many<S2SV_blank>ICBs<S2SV_blank>in<S2SV_blank>ICB<S2SV_blank>hierarchy\" \"<S2SV_blank>(max<S2SV_blank>%d<S2SV_blank>supported)\\\\n\" , UDF_MAX_ICB_NESTING ) ; goto out ; } brelse ( bh ) ; goto reread ; } } brelse ( ibh ) ; } else if ( fe -> icbTag . strategyType != cpu_to_le16 ( 4 ) ) { udf_err ( inode -> i_sb , \"unsupported<S2SV_blank>strategy<S2SV_blank>type:<S2SV_blank>%d\\\\n\" , le16_to_cpu ( fe -> icbTag . strategyType ) ) ; goto out ; } if ( fe -> icbTag . strategyType == cpu_to_le16 ( 4 ) ) iinfo -> i_strat4096 = 0 ; else iinfo -> i_strat4096 = 1 ; iinfo -> i_alloc_type = le16_to_cpu ( fe -> icbTag . flags ) & ICBTAG_FLAG_AD_MASK ; iinfo -> i_unique = 0 ; iinfo -> i_lenEAttr = 0 ; iinfo -> i_lenExtents = 0 ; iinfo -> i_lenAlloc = 0 ; iinfo -> i_next_alloc_block = 0 ; iinfo -> i_next_alloc_goal = 0 ; if ( fe -> descTag . tagIdent == cpu_to_le16 ( TAG_IDENT_EFE ) ) { iinfo -> i_efe = 1 ; iinfo -> i_use = 0 ; ret = udf_alloc_i_data ( inode , bs - sizeof ( struct extendedFileEntry ) ) ; if ( ret ) goto out ; memcpy ( iinfo -> i_ext . i_data , bh -> b_data + sizeof ( struct extendedFileEntry ) , bs - sizeof ( struct extendedFileEntry ) ) ; } else if ( fe -> descTag . tagIdent == cpu_to_le16 ( TAG_IDENT_FE ) ) { iinfo -> i_efe = 0 ; iinfo -> i_use = 0 ; ret = udf_alloc_i_data ( inode , bs - sizeof ( struct fileEntry ) ) ; if ( ret ) goto out ; memcpy ( iinfo -> i_ext . i_data , bh -> b_data + sizeof ( struct fileEntry ) , bs - sizeof ( struct fileEntry ) ) ; } else if ( fe -> descTag . tagIdent == cpu_to_le16 ( TAG_IDENT_USE ) ) { iinfo -> i_efe = 0 ; iinfo -> i_use = 1 ; iinfo -> i_lenAlloc = le32_to_cpu ( ( ( struct unallocSpaceEntry * ) bh -> b_data ) -> lengthAllocDescs ) ; ret = udf_alloc_i_data ( inode , bs - sizeof ( struct unallocSpaceEntry ) ) ; if ( ret ) goto out ; memcpy ( iinfo -> i_ext . i_data , bh -> b_data + sizeof ( struct unallocSpaceEntry ) , bs - sizeof ( struct unallocSpaceEntry ) ) ; return 0 ; } ret = - EIO ; read_lock ( & sbi -> s_cred_lock ) ; i_uid_write ( inode , le32_to_cpu ( fe -> uid ) ) ; if ( ! uid_valid ( inode -> i_uid ) || UDF_QUERY_FLAG ( inode -> i_sb , UDF_FLAG_UID_IGNORE ) || UDF_QUERY_FLAG ( inode -> i_sb , UDF_FLAG_UID_SET ) ) inode -> i_uid = UDF_SB ( inode -> i_sb ) -> s_uid ; i_gid_write ( inode , le32_to_cpu ( fe -> gid ) ) ; if ( ! gid_valid ( inode -> i_gid ) || UDF_QUERY_FLAG ( inode -> i_sb , UDF_FLAG_GID_IGNORE ) || UDF_QUERY_FLAG ( inode -> i_sb , UDF_FLAG_GID_SET ) ) inode -> i_gid = UDF_SB ( inode -> i_sb ) -> s_gid ; if ( fe -> icbTag . fileType != ICBTAG_FILE_TYPE_DIRECTORY && sbi -> s_fmode != UDF_INVALID_MODE ) inode -> i_mode = sbi -> s_fmode ; else if ( fe -> icbTag . fileType == ICBTAG_FILE_TYPE_DIRECTORY && sbi -> s_dmode != UDF_INVALID_MODE ) inode -> i_mode = sbi -> s_dmode ; else inode -> i_mode = udf_convert_permissions ( fe ) ; inode -> i_mode &= ~ sbi -> s_umask ; read_unlock ( & sbi -> s_cred_lock ) ; link_count = le16_to_cpu ( fe -> fileLinkCount ) ; if ( ! link_count ) { if ( ! hidden_inode ) { ret = - ESTALE ; goto out ; } link_count = 1 ; } set_nlink ( inode , link_count ) ; inode -> i_size = le64_to_cpu ( fe -> informationLength ) ; iinfo -> i_lenExtents = inode -> i_size ; if ( iinfo -> i_efe == 0 ) { inode -> i_blocks = le64_to_cpu ( fe -> logicalBlocksRecorded ) << ( inode -> i_sb -> s_blocksize_bits - 9 ) ; if ( ! udf_disk_stamp_to_time ( & inode -> i_atime , fe -> accessTime ) ) inode -> i_atime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & inode -> i_mtime , fe -> modificationTime ) ) inode -> i_mtime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & inode -> i_ctime , fe -> attrTime ) ) inode -> i_ctime = sbi -> s_record_time ; iinfo -> i_unique = le64_to_cpu ( fe -> uniqueID ) ; iinfo -> i_lenEAttr = le32_to_cpu ( fe -> lengthExtendedAttr ) ; iinfo -> i_lenAlloc = le32_to_cpu ( fe -> lengthAllocDescs ) ; iinfo -> i_checkpoint = le32_to_cpu ( fe -> checkpoint ) ; } else { inode -> i_blocks = le64_to_cpu ( efe -> logicalBlocksRecorded ) << ( inode -> i_sb -> s_blocksize_bits - 9 ) ; if ( ! udf_disk_stamp_to_time ( & inode -> i_atime , efe -> accessTime ) ) inode -> i_atime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & inode -> i_mtime , efe -> modificationTime ) ) inode -> i_mtime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & iinfo -> i_crtime , efe -> createTime ) ) iinfo -> i_crtime = sbi -> s_record_time ; if ( ! udf_disk_stamp_to_time ( & inode -> i_ctime , efe -> attrTime ) ) inode -> i_ctime = sbi -> s_record_time ; iinfo -> i_unique = le64_to_cpu ( efe -> uniqueID ) ; iinfo -> i_lenEAttr = le32_to_cpu ( efe -> lengthExtendedAttr ) ; iinfo -> i_lenAlloc = le32_to_cpu ( efe -> lengthAllocDescs ) ; iinfo -> i_checkpoint = le32_to_cpu ( efe -> checkpoint ) ; } inode -> i_generation = iinfo -> i_unique ; <S2SV_StartBug> if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ) { <S2SV_EndBug> if ( iinfo -> i_lenAlloc != inode -> i_size ) goto out ; if ( inode -> i_size > bs - udf_file_entry_alloc_offset ( inode ) ) goto out ; } switch ( fe -> icbTag . fileType ) { case ICBTAG_FILE_TYPE_DIRECTORY : inode -> i_op = & udf_dir_inode_operations ; inode -> i_fop = & udf_dir_operations ; inode -> i_mode |= S_IFDIR ; inc_nlink ( inode ) ; break ; case ICBTAG_FILE_TYPE_REALTIME : case ICBTAG_FILE_TYPE_REGULAR : case ICBTAG_FILE_TYPE_UNDEF : case ICBTAG_FILE_TYPE_VAT20 : if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ) inode -> i_data . a_ops = & udf_adinicb_aops ; else inode -> i_data . a_ops = & udf_aops ; inode -> i_op = & udf_file_inode_operations ; inode -> i_fop = & udf_file_operations ; inode -> i_mode |= S_IFREG ; break ; case ICBTAG_FILE_TYPE_BLOCK : inode -> i_mode |= S_IFBLK ; break ; case ICBTAG_FILE_TYPE_CHAR : inode -> i_mode |= S_IFCHR ; break ; case ICBTAG_FILE_TYPE_FIFO : init_special_inode ( inode , inode -> i_mode | S_IFIFO , 0 ) ; break ; case ICBTAG_FILE_TYPE_SOCKET : init_special_inode ( inode , inode -> i_mode | S_IFSOCK , 0 ) ; break ; case ICBTAG_FILE_TYPE_SYMLINK : inode -> i_data . a_ops = & udf_symlink_aops ; inode -> i_op = & udf_symlink_inode_operations ; inode -> i_mode = S_IFLNK | S_IRWXUGO ; break ; case ICBTAG_FILE_TYPE_MAIN : udf_debug ( \"METADATA<S2SV_blank>FILE-----\\\\n\" ) ; break ; case ICBTAG_FILE_TYPE_MIRROR : udf_debug ( \"METADATA<S2SV_blank>MIRROR<S2SV_blank>FILE-----\\\\n\" ) ; break ; case ICBTAG_FILE_TYPE_BITMAP : udf_debug ( \"METADATA<S2SV_blank>BITMAP<S2SV_blank>FILE-----\\\\n\" ) ; break ; default : udf_err ( inode -> i_sb , \"(ino<S2SV_blank>%ld)<S2SV_blank>failed<S2SV_blank>unknown<S2SV_blank>file<S2SV_blank>type=%d\\\\n\" , inode -> i_ino , fe -> icbTag . fileType ) ; goto out ; } if ( S_ISCHR ( inode -> i_mode ) || S_ISBLK ( inode -> i_mode ) ) { struct deviceSpec * dsea = ( struct deviceSpec * ) udf_get_extendedattr ( inode , 12 , 1 ) ; if ( dsea ) { init_special_inode ( inode , inode -> i_mode , MKDEV ( le32_to_cpu ( dsea -> majorDeviceIdent ) , le32_to_cpu ( dsea -> minorDeviceIdent ) ) ) ; } else goto out ; } ret = 0 ; out : brelse ( bh ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( iinfo -> i_lenEAttr > bs || iinfo -> i_lenAlloc > bs ) goto out ; if ( udf_file_entry_alloc_offset ( inode ) + iinfo -> i_lenAlloc > bs ) goto out ; if ( iinfo ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9203\n\n```\nCWE-787 static int bmpr_read_rle ( struct iwbmprcontext * rctx ) { int retval = 0 ; if ( ! ( rctx -> compression == IWBMP_BI_RLE8 && rctx -> bitcount == 8 ) && ! ( rctx -> compression == IWBMP_BI_RLE4 && rctx -> bitcount == 4 ) ) { iw_set_error ( rctx -> ctx , \"Compression<S2SV_blank>type<S2SV_blank>incompatible<S2SV_blank>with<S2SV_blank>image<S2SV_blank>type\" ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( rctx -> topdown ) { <S2SV_StartBug> iw_set_error ( rctx -> ctx , \"Compression<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>with<S2SV_blank>top-down<S2SV_blank>images\" ) ; <S2SV_EndBug> } rctx -> img -> imgtype = IW_IMGTYPE_RGBA ; rctx -> img -> bit_depth = 8 ; rctx -> img -> bpr = iw_calc_bytesperrow ( rctx -> width , 32 ) ; rctx -> img -> pixels = ( iw_byte * ) iw_malloc_large ( rctx -> ctx , rctx -> img -> bpr , rctx -> img -> height ) ; if ( ! rctx -> img -> pixels ) goto done ; if ( ! bmpr_read_rle_internal ( rctx ) ) goto done ; if ( ! bmpr_has_transparency ( rctx -> img ) ) { bmpr_strip_alpha ( rctx -> img ) ; } retval = 1 ; done : return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Compression<S2SV_blank>type<S2SV_blank>incompatible<S2SV_blank>with<S2SV_blank>image<S2SV_blank>type\" ) ; goto done ; <S2SV_ModStart> , \"Compression<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>with<S2SV_blank>top-down<S2SV_blank>images\" ) ; goto done\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_default_coef_probs ( VP9_COMMON * cm ) { <S2SV_StartBug> vp9_copy ( cm -> fc . coef_probs [ TX_4X4 ] , default_coef_probs_4x4 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_copy ( cm -> fc . coef_probs [ TX_8X8 ] , default_coef_probs_8x8 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_copy ( cm -> fc . coef_probs [ TX_16X16 ] , default_coef_probs_16x16 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_copy ( cm -> fc . coef_probs [ TX_32X32 ] , default_coef_probs_32x32 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> coef_probs [ TX_4X4 <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> coef_probs [ TX_8X8 <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> coef_probs [ TX_16X16 <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> coef_probs [ TX_32X32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 int cib_remote_perform_op ( cib_t * cib , const char * op , const char * host , const char * section , xmlNode * data , xmlNode * * output_data , int call_options , const char * name ) { int rc = pcmk_ok ; <S2SV_StartBug> xmlNode * op_msg = NULL ; <S2SV_EndBug> xmlNode * op_reply = NULL ; cib_remote_opaque_t * private = cib -> variant_opaque ; <S2SV_StartBug> if ( sync_timer == NULL ) { <S2SV_EndBug> sync_timer = calloc ( 1 , sizeof ( struct timer_rec_s ) ) ; } if ( cib -> state == cib_disconnected ) { return - ENOTCONN ; } if ( output_data != NULL ) { * output_data = NULL ; } if ( op == NULL ) { crm_err ( \"No<S2SV_blank>operation<S2SV_blank>specified\" ) ; return - EINVAL ; } cib -> call_id ++ ; if ( cib -> call_id < 1 ) { cib -> call_id = 1 ; } op_msg = cib_create_op ( cib -> call_id , private -> callback . token , op , host , section , data , call_options , NULL ) ; if ( op_msg == NULL ) { return - EPROTO ; } crm_trace ( \"Sending<S2SV_blank>%s<S2SV_blank>message<S2SV_blank>to<S2SV_blank>CIB<S2SV_blank>service\" , op ) ; <S2SV_StartBug> crm_send_remote_msg ( private -> command . session , op_msg , private -> command . encrypted ) ; <S2SV_EndBug> free_xml ( op_msg ) ; if ( ( call_options & cib_discard_reply ) ) { crm_trace ( \"Discarding<S2SV_blank>reply\" ) ; return pcmk_ok ; } else if ( ! ( call_options & cib_sync_call ) ) { return cib -> call_id ; } crm_trace ( \"Waiting<S2SV_blank>for<S2SV_blank>a<S2SV_blank>syncronous<S2SV_blank>reply\" ) ; <S2SV_StartBug> if ( cib -> call_timeout > 0 ) { <S2SV_EndBug> timer_expired = FALSE ; sync_timer -> call_id = cib -> call_id ; sync_timer -> timeout = cib -> call_timeout * 1000 ; sync_timer -> ref = g_timeout_add ( sync_timer -> timeout , cib_timeout_handler , sync_timer ) ; } while ( timer_expired == FALSE ) { int reply_id = - 1 ; int msg_id = cib -> call_id ; <S2SV_StartBug> op_reply = crm_recv_remote_msg ( private -> command . session , private -> command . encrypted ) ; <S2SV_EndBug> if ( op_reply == NULL ) { break ; } <S2SV_StartBug> crm_element_value_int ( op_reply , F_CIB_CALLID , & reply_id ) ; <S2SV_EndBug> CRM_CHECK ( reply_id > 0 , free_xml ( op_reply ) ; if ( sync_timer -> ref > 0 ) { g_source_remove ( sync_timer -> ref ) ; sync_timer -> ref = 0 ; } return - ENOMSG ) ; if ( reply_id == msg_id ) { break ; } else if ( reply_id < msg_id ) { crm_debug ( \"Received<S2SV_blank>old<S2SV_blank>reply:<S2SV_blank>%d<S2SV_blank>(wanted<S2SV_blank>%d)\" , reply_id , msg_id ) ; crm_log_xml_trace ( op_reply , \"Old<S2SV_blank>reply\" ) ; } else if ( ( reply_id - 10000 ) > msg_id ) { crm_debug ( \"Received<S2SV_blank>old<S2SV_blank>reply:<S2SV_blank>%d<S2SV_blank>(wanted<S2SV_blank>%d)\" , reply_id , msg_id ) ; crm_log_xml_trace ( op_reply , \"Old<S2SV_blank>reply\" ) ; } else { crm_err ( \"Received<S2SV_blank>a<S2SV_blank>__future__<S2SV_blank>reply:\" \"<S2SV_blank>%d<S2SV_blank>(wanted<S2SV_blank>%d)\" , reply_id , msg_id ) ; } free_xml ( op_reply ) ; op_reply = NULL ; <S2SV_StartBug> } <S2SV_EndBug> if ( sync_timer -> ref > 0 ) { g_source_remove ( sync_timer -> ref ) ; sync_timer -> ref = 0 ; } if ( timer_expired ) { return - ETIME ; } if ( op_reply == NULL ) { crm_err ( \"No<S2SV_blank>reply<S2SV_blank>message<S2SV_blank>-<S2SV_blank>empty\" ) ; return - ENOMSG ; } crm_trace ( \"Syncronous<S2SV_blank>reply<S2SV_blank>received\" ) ; if ( crm_element_value_int ( op_reply , F_CIB_RC , & rc ) != 0 ) { rc = - EPROTO ; } if ( rc == - pcmk_err_diff_resync ) { rc = pcmk_ok ; } if ( rc == pcmk_ok || rc == - EPERM ) { crm_log_xml_debug ( op_reply , \"passed\" ) ; } else { crm_err ( \"Call<S2SV_blank>failed:<S2SV_blank>%s\" , pcmk_strerror ( rc ) ) ; crm_log_xml_warn ( op_reply , \"failed\" ) ; } if ( output_data == NULL ) { } else if ( ! ( call_options & cib_discard_reply ) ) { xmlNode * tmp = get_message_xml ( op_reply , F_CIB_CALLDATA ) ; if ( tmp == NULL ) { crm_trace ( \"No<S2SV_blank>output<S2SV_blank>in<S2SV_blank>reply<S2SV_blank>to<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>command<S2SV_blank>%d\" , op , cib -> call_id - 1 ) ; } else { * output_data = copy_xml ( tmp ) ; } } free_xml ( op_reply ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = pcmk_ok ; int disconnected = 0 ; int remaining_time = 0 ; time_t start_time ; <S2SV_ModStart> -> variant_opaque ; <S2SV_ModEnd> if ( cib <S2SV_ModStart> op ) ; if ( ! ( call_options & cib_sync_call ) ) { <S2SV_ModStart> ( private -> callback . session , op_msg , private -> command . encrypted ) ; } else { crm_send_remote_msg ( private -> command . <S2SV_ModEnd> session , op_msg <S2SV_ModStart> encrypted ) ; } <S2SV_ModStart> \"Waiting<S2SV_blank>for<S2SV_blank>a<S2SV_blank>syncronous<S2SV_blank>reply\" ) ; start_time = time ( NULL ) ; remaining_time = <S2SV_ModEnd> cib -> call_timeout <S2SV_ModStart> cib -> call_timeout ? cib -> call_timeout : 60 ; while ( remaining_time > 0 && ! disconnected <S2SV_ModEnd> ) { int <S2SV_ModStart> -> call_id ; <S2SV_ModEnd> crm_recv_remote_msg ( private <S2SV_ModStart> . session , & <S2SV_ModStart> -> command . recv_buf , private -> command . encrypted , remaining_time * 1000 , & disconnected ) ; op_reply = crm_parse_remote_buffer ( & private -> command . recv_buf ) ; if ( ! op_reply <S2SV_ModEnd> ) { break <S2SV_ModStart> , & reply_id <S2SV_ModEnd> ) ; if <S2SV_ModStart> = NULL ; remaining_time = time ( NULL ) - start_time ; } if ( disconnected ) { crm_err ( \"Disconnected<S2SV_blank>while<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>reply.\" ) ; return - ENOTCONN ; } else <S2SV_ModEnd> if ( op_reply\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3233\n\n```\nCWE-200 static int llcp_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; unsigned int copied , rlen ; struct sk_buff * skb , * cskb ; int err = 0 ; <S2SV_StartBug> pr_debug ( \"%p<S2SV_blank>%zu\\\\n\" , sk , len ) ; <S2SV_EndBug> lock_sock ( sk ) ; if ( sk -> sk_state == LLCP_CLOSED && skb_queue_empty ( & sk -> sk_receive_queue ) ) { release_sock ( sk ) ; return 0 ; } release_sock ( sk ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) { pr_err ( \"Recv<S2SV_blank>datagram<S2SV_blank>failed<S2SV_blank>state<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d\" , sk -> sk_state , err , sock_error ( sk ) ) ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } rlen = skb -> len ; copied = min_t ( unsigned int , rlen , len ) ; cskb = skb ; if ( skb_copy_datagram_iovec ( cskb , 0 , msg -> msg_iov , copied ) ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - EFAULT ; } sock_recv_timestamp ( msg , sk , skb ) ; if ( sk -> sk_type == SOCK_DGRAM && msg -> msg_name ) { struct nfc_llcp_ui_cb * ui_cb = nfc_llcp_ui_skb_cb ( skb ) ; struct sockaddr_nfc_llcp * sockaddr = ( struct sockaddr_nfc_llcp * ) msg -> msg_name ; msg -> msg_namelen = sizeof ( struct sockaddr_nfc_llcp ) ; pr_debug ( \"Datagram<S2SV_blank>socket<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , ui_cb -> dsap , ui_cb -> ssap ) ; <S2SV_StartBug> sockaddr -> sa_family = AF_NFC ; <S2SV_EndBug> sockaddr -> nfc_protocol = NFC_PROTO_NFC_DEP ; sockaddr -> dsap = ui_cb -> dsap ; sockaddr -> ssap = ui_cb -> ssap ; } if ( ! ( flags & MSG_PEEK ) ) { if ( sk -> sk_type == SOCK_STREAM || sk -> sk_type == SOCK_DGRAM || sk -> sk_type == SOCK_RAW ) { skb_pull ( skb , copied ) ; if ( skb -> len ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; goto done ; } } kfree_skb ( skb ) ; } done : if ( sk -> sk_type == SOCK_SEQPACKET && ( flags & MSG_TRUNC ) ) copied = rlen ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , len ) ; msg -> msg_namelen = 0 <S2SV_ModStart> ssap ) ; memset ( sockaddr , 0 , sizeof ( * sockaddr ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4081\n\n```\nCWE-000 static int ghash_final ( struct shash_desc * desc , u8 * dst ) { struct ghash_desc_ctx * dctx = shash_desc_ctx ( desc ) ; struct ghash_ctx * ctx = crypto_shash_ctx ( desc -> tfm ) ; u8 * buf = dctx -> buffer ; <S2SV_StartBug> ghash_flush ( ctx , dctx ) ; <S2SV_EndBug> memcpy ( dst , buf , GHASH_BLOCK_SIZE ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> buffer ; if ( ! ctx -> gf128 ) return - ENOKEY ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17178\n\n```\nCWE-772 LPSTR tr_esc_str ( LPCSTR arg , bool format ) { <S2SV_StartBug> LPSTR tmp = NULL ; <S2SV_EndBug> size_t cs = 0 , x , ds , len ; size_t s ; if ( NULL == arg ) return NULL ; s = strlen ( arg ) ; while ( ( s > 0 ) && isspace ( arg [ s - 1 ] ) ) s -- ; ds = s + 1 ; if ( s ) <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 2 ) ; } memset ( tmp , 0 , ds * sizeof ( CHAR ) ) ; for ( x = 0 ; x < s ; x ++ ) { switch ( arg [ x ] ) { case '<' : len = format ? 13 : 4 ; ds += len - 1 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 3 ) ; } if ( format ) strncpy ( & tmp [ cs ] , \"<replaceable>\" , len ) ; else strncpy ( & tmp [ cs ] , \"&lt;\" , len ) ; cs += len ; break ; case '>' : len = format ? 14 : 4 ; ds += len - 1 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 4 ) ; } if ( format ) strncpy ( & tmp [ cs ] , \"</replaceable>\" , len ) ; else strncpy ( & tmp [ cs ] , \"&lt;\" , len ) ; cs += len ; break ; case '\\\\'' : ds += 5 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 5 ) ; } tmp [ cs ++ ] = '&' ; tmp [ cs ++ ] = 'a' ; tmp [ cs ++ ] = 'p' ; tmp [ cs ++ ] = 'o' ; tmp [ cs ++ ] = 's' ; tmp [ cs ++ ] = ';' ; break ; case \\'\"\\' : ds += 5 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 6 ) ; } tmp [ cs ++ ] = '&' ; tmp [ cs ++ ] = 'q' ; tmp [ cs ++ ] = 'u' ; tmp [ cs ++ ] = 'o' ; tmp [ cs ++ ] = 't' ; tmp [ cs ++ ] = ';' ; break ; case '&' : ds += 4 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( NULL == tmp ) <S2SV_EndBug> { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 7 ) ; } tmp [ cs ++ ] = '&' ; tmp [ cs ++ ] = 'a' ; tmp [ cs ++ ] = 'm' ; tmp [ cs ++ ] = 'p' ; tmp [ cs ++ ] = ';' ; break ; default : tmp [ cs ++ ] = arg [ x ] ; break ; } tmp [ ds - 1 ] = '\\\\0' ; } return tmp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { LPSTR tmp = NULL ; LPSTR tmp2 <S2SV_ModStart> ( s ) { tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 ; } <S2SV_ModStart> - 1 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> CHAR ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 <S2SV_ModStart> - 1 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> CHAR ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 <S2SV_ModStart> += 5 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> CHAR ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 <S2SV_ModStart> += 5 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> CHAR ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 <S2SV_ModStart> += 4 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3315\n\n```\nCWE-59 int main ( int argc , char * * argv ) { int fd = xopen ( \"/dev/null\" , O_RDWR ) ; while ( fd < 2 ) fd = xdup ( fd ) ; if ( fd > 2 ) close ( fd ) ; if ( argc < 8 ) { error_msg_and_die ( \"Usage:<S2SV_blank>%s<S2SV_blank>SIGNO<S2SV_blank>CORE_SIZE_LIMIT<S2SV_blank>PID<S2SV_blank>UID<S2SV_blank>GID<S2SV_blank>TIME<S2SV_blank>BINARY_NAME<S2SV_blank>[HOSTNAME]\" , argv [ 0 ] ) ; } if ( strchr ( argv [ 1 ] , '<S2SV_blank>' ) ) { int i ; for ( i = 1 ; argv [ i ] ; i ++ ) { strchrnul ( argv [ i ] , '<S2SV_blank>' ) [ 0 ] = '\\\\0' ; } } logmode = LOGMODE_JOURNAL ; load_abrt_conf ( ) ; bool setting_MakeCompatCore ; bool setting_SaveBinaryImage ; { map_string_t * settings = new_map_string ( ) ; load_abrt_plugin_conf_file ( \"CCpp.conf\" , settings ) ; const char * value ; value = get_map_string_item_or_NULL ( settings , \"MakeCompatCore\" ) ; setting_MakeCompatCore = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"SaveBinaryImage\" ) ; setting_SaveBinaryImage = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"VerboseLog\" ) ; if ( value ) g_verbose = xatoi_positive ( value ) ; free_map_string ( settings ) ; } errno = 0 ; const char * signal_str = argv [ 1 ] ; int signal_no = xatoi_positive ( signal_str ) ; off_t ulimit_c = strtoull ( argv [ 2 ] , NULL , 10 ) ; if ( ulimit_c < 0 ) { ulimit_c = ~ ( ( off_t ) 1 << ( sizeof ( off_t ) * 8 - 1 ) ) ; } const char * pid_str = argv [ 3 ] ; pid_t pid = xatoi_positive ( argv [ 3 ] ) ; uid_t uid = xatoi_positive ( argv [ 4 ] ) ; if ( errno || pid <= 0 ) { perror_msg_and_die ( \"PID<S2SV_blank>\\'%s\\'<S2SV_blank>or<S2SV_blank>limit<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>bogus\" , argv [ 3 ] , argv [ 2 ] ) ; } { char * s = xmalloc_fopen_fgetline_fclose ( VAR_RUN \"/abrt/saved_core_pattern\" ) ; if ( s && s [ 0 ] != '|' ) core_basename = s ; else free ( s ) ; } struct utsname uts ; if ( ! argv [ 8 ] ) { uname ( & uts ) ; argv [ 8 ] = uts . nodename ; } char path [ PATH_MAX ] ; int src_fd_binary = - 1 ; char * executable = get_executable ( pid , setting_SaveBinaryImage ? & src_fd_binary : NULL ) ; if ( executable && strstr ( executable , \"/abrt-hook-ccpp\" ) ) { error_msg_and_die ( \"PID<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>\\'%s\\',<S2SV_blank>not<S2SV_blank>dumping<S2SV_blank>it<S2SV_blank>to<S2SV_blank>avoid<S2SV_blank>recursion\" , ( long ) pid , executable ) ; } user_pwd = get_cwd ( pid ) ; log_notice ( \"user_pwd:\\'%s\\'\" , user_pwd ) ; sprintf ( path , \"/proc/%lu/status\" , ( long ) pid ) ; proc_pid_status = xmalloc_xopen_read_close ( path , NULL ) ; uid_t fsuid = uid ; uid_t tmp_fsuid = get_fsuid ( ) ; int suid_policy = dump_suid_policy ( ) ; if ( tmp_fsuid != uid ) { fsuid = 0 ; if ( suid_policy == DUMP_SUID_UNSAFE ) { fsuid = tmp_fsuid ; } } if ( setting_MakeCompatCore && ulimit_c != 0 ) user_core_fd = open_user_core ( uid , fsuid , pid , & argv [ 1 ] ) ; if ( executable == NULL ) { error_msg ( \"Can\\'t<S2SV_blank>read<S2SV_blank>/proc/%lu/exe<S2SV_blank>link\" , ( long ) pid ) ; goto create_user_core ; } const char * signame = NULL ; switch ( signal_no ) { case SIGILL : signame = \"ILL\" ; break ; case SIGFPE : signame = \"FPE\" ; break ; case SIGSEGV : signame = \"SEGV\" ; break ; case SIGBUS : signame = \"BUS\" ; break ; case SIGABRT : signame = \"ABRT\" ; break ; case SIGTRAP : signame = \"TRAP\" ; break ; default : goto create_user_core ; } if ( ! daemon_is_ok ( ) ) { log ( \"abrtd<S2SV_blank>is<S2SV_blank>not<S2SV_blank>running.<S2SV_blank>If<S2SV_blank>it<S2SV_blank>crashed,<S2SV_blank>\" \"/proc/sys/kernel/core_pattern<S2SV_blank>contains<S2SV_blank>a<S2SV_blank>stale<S2SV_blank>value,<S2SV_blank>\" \"consider<S2SV_blank>resetting<S2SV_blank>it<S2SV_blank>to<S2SV_blank>\\'core\\'\" ) ; goto create_user_core ; } if ( g_settings_nMaxCrashReportsSize > 0 ) { if ( low_free_space ( g_settings_nMaxCrashReportsSize , g_settings_dump_location ) ) goto create_user_core ; } snprintf ( path , sizeof ( path ) , \"%s/last-ccpp\" , g_settings_dump_location ) ; if ( check_recent_crash_file ( path , executable ) ) { goto create_user_core ; } const char * last_slash = strrchr ( executable , '/' ) ; if ( last_slash && strncmp ( ++ last_slash , \"abrt\" , 4 ) == 0 ) { snprintf ( path , sizeof ( path ) , \"%s/%s-coredump\" , g_settings_dump_location , last_slash ) ; int abrt_core_fd = xopen3 ( path , O_WRONLY | O_CREAT | O_TRUNC , 0600 ) ; off_t core_size = copyfd_eof ( STDIN_FILENO , abrt_core_fd , COPYFD_SPARSE ) ; if ( core_size < 0 || fsync ( abrt_core_fd ) != 0 ) { unlink ( path ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; return 0 ; } unsigned path_len = snprintf ( path , sizeof ( path ) , \"%s/ccpp-%s-%lu.new\" , g_settings_dump_location , iso_date_string ( NULL ) , ( long ) pid ) ; if ( path_len >= ( sizeof ( path ) - sizeof ( \"/\" FILENAME_COREDUMP ) ) ) { goto create_user_core ; } dd = dd_create ( path , fsuid , DEFAULT_DUMP_DIR_MODE ) ; if ( dd ) { char * rootdir = get_rootdir ( pid ) ; dd_create_basic_files ( dd , fsuid , ( rootdir && strcmp ( rootdir , \"/\" ) != 0 ) ? rootdir : NULL ) ; char source_filename [ sizeof ( \"/proc/%lu/somewhat_long_name\" ) + sizeof ( long ) * 3 ] ; int source_base_ofs = sprintf ( source_filename , \"/proc/%lu/smaps\" , ( long ) pid ) ; source_base_ofs -= strlen ( \"smaps\" ) ; char * dest_filename = concat_path_file ( dd -> dd_dirname , \"also_somewhat_longish_name\" ) ; char * dest_base = strrchr ( dest_filename , '/' ) + 1 ; strcpy ( source_filename + source_base_ofs , \"maps\" ) ; strcpy ( dest_base , FILENAME_MAPS ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( source_filename + source_base_ofs , \"limits\" ) ; strcpy ( dest_base , FILENAME_LIMITS ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( source_filename + source_base_ofs , \"cgroup\" ) ; strcpy ( dest_base , FILENAME_CGROUP ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( dest_base , FILENAME_OPEN_FDS ) ; dump_fd_info ( dest_filename , source_filename , source_base_ofs , dd -> dd_uid , dd -> dd_gid ) ; free ( dest_filename ) ; dd_save_text ( dd , FILENAME_ANALYZER , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_TYPE , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_EXECUTABLE , executable ) ; dd_save_text ( dd , FILENAME_PID , pid_str ) ; dd_save_text ( dd , FILENAME_PROC_PID_STATUS , proc_pid_status ) ; if ( user_pwd ) dd_save_text ( dd , FILENAME_PWD , user_pwd ) ; if ( rootdir ) { if ( strcmp ( rootdir , \"/\" ) != 0 ) dd_save_text ( dd , FILENAME_ROOTDIR , rootdir ) ; } char * reason = xasprintf ( \"%s<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>SIG%s\" , last_slash , signame ? signame : signal_str ) ; dd_save_text ( dd , FILENAME_REASON , reason ) ; free ( reason ) ; char * cmdline = get_cmdline ( pid ) ; dd_save_text ( dd , FILENAME_CMDLINE , cmdline ? : \"\" ) ; free ( cmdline ) ; char * environ = get_environ ( pid ) ; dd_save_text ( dd , FILENAME_ENVIRON , environ ? : \"\" ) ; free ( environ ) ; char * fips_enabled = xmalloc_fopen_fgetline_fclose ( \"/proc/sys/crypto/fips_enabled\" ) ; if ( fips_enabled ) { if ( strcmp ( fips_enabled , \"0\" ) != 0 ) dd_save_text ( dd , \"fips_enabled\" , fips_enabled ) ; free ( fips_enabled ) ; } dd_save_text ( dd , FILENAME_ABRT_VERSION , VERSION ) ; if ( src_fd_binary > 0 ) { strcpy ( path + path_len , \"/\" FILENAME_BINARY ) ; int dst_fd = create_or_die ( path ) ; off_t sz = copyfd_eof ( src_fd_binary , dst_fd , COPYFD_SPARSE ) ; if ( fsync ( dst_fd ) != 0 || close ( dst_fd ) != 0 || sz < 0 ) { dd_delete ( dd ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } close ( src_fd_binary ) ; } strcpy ( path + path_len , \"/\" FILENAME_COREDUMP ) ; int abrt_core_fd = create_or_die ( path ) ; off_t core_size = copyfd_sparse ( STDIN_FILENO , abrt_core_fd , user_core_fd , ulimit_c ) ; if ( fsync ( abrt_core_fd ) != 0 || close ( abrt_core_fd ) != 0 || core_size < 0 ) { unlink ( path ) ; dd_delete ( dd ) ; if ( user_core_fd >= 0 ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; } error_msg_and_die ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , path ) ; } if ( user_core_fd >= 0 && ( fsync ( user_core_fd ) != 0 || close ( user_core_fd ) != 0 || ( ulimit_c == 0 || core_size > ulimit_c ) ) ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; } <S2SV_StartBug> { <S2SV_EndBug> char * java_log = xasprintf ( \"/tmp/jvm-%lu/hs_error.log\" , ( long ) pid ) ; int src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; if ( src_fd < 0 ) { java_log = xasprintf ( \"%s/hs_err_pid%lu.log\" , user_pwd , ( long ) pid ) ; src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; } if ( src_fd >= 0 ) { strcpy ( path + path_len , \"/hs_err.log\" ) ; int dst_fd = create_or_die ( path ) ; off_t sz = copyfd_eof ( src_fd , dst_fd , COPYFD_SPARSE ) ; if ( close ( dst_fd ) != 0 || sz < 0 ) { dd_delete ( dd ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } close ( src_fd ) ; } <S2SV_StartBug> } <S2SV_EndBug> dd_close ( dd ) ; path [ path_len ] = '\\\\0' ; char * newpath = xstrndup ( path , path_len - ( sizeof ( \".new\" ) - 1 ) ) ; if ( rename ( path , newpath ) == 0 ) strcpy ( path , newpath ) ; free ( newpath ) ; log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; notify_new_path ( path ) ; if ( g_settings_nMaxCrashReportsSize > 0 ) { unsigned maxsize = g_settings_nMaxCrashReportsSize + g_settings_nMaxCrashReportsSize / 4 ; maxsize |= 63 ; trim_problem_dirs ( g_settings_dump_location , maxsize * ( double ) ( 1024 * 1024 ) , path ) ; } free ( rootdir ) ; return 0 ; } create_user_core : if ( user_core_fd >= 0 ) { off_t core_size = copyfd_size ( STDIN_FILENO , user_core_fd , ulimit_c , COPYFD_SPARSE ) ; if ( fsync ( user_core_fd ) != 0 || close ( user_core_fd ) != 0 || core_size < 0 ) { perror_msg ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , full_core_basename ) ; xchdir ( user_pwd ) ; unlink ( core_basename ) ; return 1 ; } if ( ulimit_c == 0 || core_size > ulimit_c ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; return 1 ; } log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , full_core_basename , ( long long ) core_size ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } # if 0 <S2SV_ModStart> ; } } # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7166\n\n```\nCWE-399 static int choose_filters ( struct archive_read * a ) { <S2SV_StartBug> int number_bidders , i , bid , best_bid ; <S2SV_EndBug> struct archive_read_filter_bidder * bidder , * best_bidder ; struct archive_read_filter * filter ; ssize_t avail ; int r ; <S2SV_StartBug> for ( ; ; ) { <S2SV_EndBug> number_bidders = sizeof ( a -> bidders ) / sizeof ( a -> bidders [ 0 ] ) ; best_bid = 0 ; best_bidder = NULL ; bidder = a -> bidders ; for ( i = 0 ; i < number_bidders ; i ++ , bidder ++ ) { if ( bidder -> bid != NULL ) { bid = ( bidder -> bid ) ( bidder , a -> filter ) ; if ( bid > best_bid ) { best_bid = bid ; best_bidder = bidder ; } } } if ( best_bidder == NULL ) { __archive_read_filter_ahead ( a -> filter , 1 , & avail ) ; if ( avail < 0 ) { __archive_read_close_filters ( a ) ; __archive_read_free_filters ( a ) ; return ( ARCHIVE_FATAL ) ; } a -> archive . compression_name = a -> filter -> name ; a -> archive . compression_code = a -> filter -> code ; return ( ARCHIVE_OK ) ; } filter = ( struct archive_read_filter * ) calloc ( 1 , sizeof ( * filter ) ) ; if ( filter == NULL ) return ( ARCHIVE_FATAL ) ; filter -> bidder = best_bidder ; filter -> archive = a ; filter -> upstream = a -> filter ; a -> filter = filter ; r = ( best_bidder -> init ) ( a -> filter ) ; if ( r != ARCHIVE_OK ) { __archive_read_close_filters ( a ) ; __archive_read_free_filters ( a ) ; return ( ARCHIVE_FATAL ) ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bid , best_bid , n <S2SV_ModStart> ; for ( n = 0 ; n < 25 ; ++ n <S2SV_ModEnd> ) { number_bidders <S2SV_ModStart> ; } } archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Input<S2SV_blank>requires<S2SV_blank>too<S2SV_blank>many<S2SV_blank>filters<S2SV_blank>for<S2SV_blank>decoding\" ) ; return ( ARCHIVE_FATAL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21309\n\n```\nCWE-190 sds sdsMakeRoomFor ( sds s , size_t addlen ) { void * sh , * newsh ; size_t avail = sdsavail ( s ) ; size_t len , newlen ; char type , oldtype = s [ - 1 ] & SDS_TYPE_MASK ; int hdrlen ; if ( avail >= addlen ) return s ; len = sdslen ( s ) ; sh = ( char * ) s - sdsHdrSize ( oldtype ) ; newlen = ( len + addlen ) ; <S2SV_StartBug> if ( newlen < SDS_MAX_PREALLOC ) <S2SV_EndBug> newlen *= 2 ; else newlen += SDS_MAX_PREALLOC ; type = sdsReqType ( newlen ) ; if ( type == SDS_TYPE_5 ) type = SDS_TYPE_8 ; <S2SV_StartBug> hdrlen = sdsHdrSize ( type ) ; <S2SV_EndBug> if ( oldtype == type ) { newsh = s_realloc ( sh , hdrlen + newlen + 1 ) ; if ( newsh == NULL ) return NULL ; s = ( char * ) newsh + hdrlen ; } else { newsh = s_malloc ( hdrlen + newlen + 1 ) ; if ( newsh == NULL ) return NULL ; memcpy ( ( char * ) newsh + hdrlen , s , len + 1 ) ; s_free ( sh ) ; s = ( char * ) newsh + hdrlen ; s [ - 1 ] = type ; sdssetlen ( s , len ) ; } sdssetalloc ( s , newlen ) ; return s ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> addlen ) ; assert ( newlen > len ) ; <S2SV_ModStart> sdsHdrSize ( type ) ; assert ( hdrlen + newlen + 1 > len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static void icmp_reply ( struct icmp_bxm * icmp_param , struct sk_buff * skb ) { struct ipcm_cookie ipc ; struct rtable * rt = skb_rtable ( skb ) ; struct net * net = dev_net ( rt -> dst . dev ) ; struct sock * sk ; struct inet_sock * inet ; __be32 daddr ; <S2SV_StartBug> if ( ip_options_echo ( & icmp_param -> replyopts , skb ) ) <S2SV_EndBug> return ; sk = icmp_xmit_lock ( net ) ; if ( sk == NULL ) return ; inet = inet_sk ( sk ) ; icmp_param -> data . icmph . checksum = 0 ; inet -> tos = ip_hdr ( skb ) -> tos ; daddr = ipc . addr = rt -> rt_src ; ipc . opt = NULL ; ipc . tx_flags = 0 ; <S2SV_StartBug> if ( icmp_param -> replyopts . optlen ) { <S2SV_EndBug> <S2SV_StartBug> ipc . opt = & icmp_param -> replyopts ; <S2SV_EndBug> if ( ipc . opt -> srr ) <S2SV_StartBug> daddr = icmp_param -> replyopts . faddr ; <S2SV_EndBug> } { struct flowi4 fl4 = { . daddr = daddr , . saddr = rt -> rt_spec_dst , . flowi4_tos = RT_TOS ( ip_hdr ( skb ) -> tos ) , . flowi4_proto = IPPROTO_ICMP , } ; security_skb_classify_flow ( skb , flowi4_to_flowi ( & fl4 ) ) ; rt = ip_route_output_key ( net , & fl4 ) ; if ( IS_ERR ( rt ) ) goto out_unlock ; } if ( icmpv4_xrlim_allow ( net , rt , icmp_param -> data . icmph . type , icmp_param -> data . icmph . code ) ) icmp_push_reply ( icmp_param , & ipc , & rt ) ; ip_rt_put ( rt ) ; out_unlock : icmp_xmit_unlock ( sk ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> icmp_param -> replyopts . opt . opt <S2SV_ModStart> -> replyopts . opt . opt . <S2SV_ModStart> icmp_param -> replyopts . opt ; if ( ipc . opt -> opt . <S2SV_ModEnd> srr ) daddr <S2SV_ModStart> icmp_param -> replyopts . opt . opt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20467\n\n```\nCWE-835 static Image * ReadBMPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { BMPInfo bmp_info ; Image * image ; MagickBooleanType status ; MagickOffsetType offset , start_position ; MemoryInfo * pixel_info ; Quantum index ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bit , bytes_per_line , length ; ssize_t count , y ; unsigned char magick [ 12 ] , * pixels ; unsigned int blue , green , offset_bits , red ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( & bmp_info , 0 , sizeof ( bmp_info ) ) ; bmp_info . ba_offset = 0 ; start_position = 0 ; offset_bits = 0 ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { PixelInfo quantum_bits ; PixelPacket shift ; start_position = TellBlob ( image ) - 2 ; bmp_info . ba_offset = 0 ; while ( LocaleNCompare ( ( char * ) magick , \"BA\" , 2 ) == 0 ) { bmp_info . file_size = ReadBlobLSBLong ( image ) ; bmp_info . ba_offset = ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) break ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Magick:<S2SV_blank>%c%c\" , magick [ 0 ] , magick [ 1 ] ) ; if ( ( count != 2 ) || ( ( LocaleNCompare ( ( char * ) magick , \"BM\" , 2 ) != 0 ) && ( LocaleNCompare ( ( char * ) magick , \"CI\" , 2 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bmp_info . file_size = ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; bmp_info . size = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>BMP<S2SV_blank>size:<S2SV_blank>%u\" , bmp_info . size ) ; if ( bmp_info . size == 12 ) { ( void ) CopyMagickString ( image -> magick , \"BMP2\" , MagickPathExtent ) ; bmp_info . width = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . height = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . x_pixels = 0 ; bmp_info . y_pixels = 0 ; bmp_info . number_colors = 0 ; bmp_info . compression = BI_RGB ; bmp_info . image_size = 0 ; bmp_info . alpha_mask = 0 ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>OS/2<S2SV_blank>Bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; } } else { if ( bmp_info . size < 40 ) ThrowReaderException ( CorruptImageError , \"NonOS2HeaderSizeError\" ) ; bmp_info . width = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . height = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . compression = ReadBlobLSBLong ( image ) ; bmp_info . image_size = ReadBlobLSBLong ( image ) ; bmp_info . x_pixels = ReadBlobLSBLong ( image ) ; bmp_info . y_pixels = ReadBlobLSBLong ( image ) ; bmp_info . number_colors = ReadBlobLSBLong ( image ) ; <S2SV_StartBug> if ( bmp_info . number_colors > GetBlobSize ( image ) ) <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; bmp_info . colors_important = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>MS<S2SV_blank>Windows<S2SV_blank>bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Bits<S2SV_blank>per<S2SV_blank>pixel:<S2SV_blank>%.20g\" , ( double ) bmp_info . bits_per_pixel ) ; switch ( bmp_info . compression ) { case BI_RGB : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RGB\" ) ; break ; } case BI_RLE4 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE4\" ) ; break ; } case BI_RLE8 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE8\" ) ; break ; } case BI_BITFIELDS : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_BITFIELDS\" ) ; break ; } case BI_PNG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_PNG\" ) ; break ; } case BI_JPEG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_JPEG\" ) ; break ; } default : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>UNKNOWN<S2SV_blank>(%u)\" , bmp_info . compression ) ; } } ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>colors:<S2SV_blank>%u\" , bmp_info . number_colors ) ; } bmp_info . red_mask = ReadBlobLSBLong ( image ) ; bmp_info . green_mask = ReadBlobLSBLong ( image ) ; bmp_info . blue_mask = ReadBlobLSBLong ( image ) ; if ( bmp_info . size > 40 ) { double gamma ; bmp_info . alpha_mask = ReadBlobLSBLong ( image ) ; bmp_info . colorspace = ReadBlobLSBSignedLong ( image ) ; # define BMP_DENOM ( ( double ) 0x40000000 ) bmp_info . red_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; gamma = bmp_info . red_primary . x + bmp_info . red_primary . y + bmp_info . red_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . red_primary . x *= gamma ; bmp_info . red_primary . y *= gamma ; image -> chromaticity . red_primary . x = bmp_info . red_primary . x ; image -> chromaticity . red_primary . y = bmp_info . red_primary . y ; gamma = bmp_info . green_primary . x + bmp_info . green_primary . y + bmp_info . green_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . green_primary . x *= gamma ; bmp_info . green_primary . y *= gamma ; image -> chromaticity . green_primary . x = bmp_info . green_primary . x ; image -> chromaticity . green_primary . y = bmp_info . green_primary . y ; gamma = bmp_info . blue_primary . x + bmp_info . blue_primary . y + bmp_info . blue_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . blue_primary . x *= gamma ; bmp_info . blue_primary . y *= gamma ; image -> chromaticity . blue_primary . x = bmp_info . blue_primary . x ; image -> chromaticity . blue_primary . y = bmp_info . blue_primary . y ; bmp_info . gamma_scale . x = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . y = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . z = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; image -> gamma = ( bmp_info . gamma_scale . x + bmp_info . gamma_scale . y + bmp_info . gamma_scale . z ) / 3.0 ; } else ( void ) CopyMagickString ( image -> magick , \"BMP3\" , MagickPathExtent ) ; if ( bmp_info . size > 108 ) { size_t intent ; intent = ReadBlobLSBLong ( image ) ; switch ( ( int ) intent ) { case LCS_GM_BUSINESS : { image -> rendering_intent = SaturationIntent ; break ; } case LCS_GM_GRAPHICS : { image -> rendering_intent = RelativeIntent ; break ; } case LCS_GM_IMAGES : { image -> rendering_intent = PerceptualIntent ; break ; } case LCS_GM_ABS_COLORIMETRIC : { image -> rendering_intent = AbsoluteIntent ; break ; } } ( void ) ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; } } if ( ( MagickSizeType ) bmp_info . file_size > GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; else if ( ( MagickSizeType ) bmp_info . file_size < GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageWarning , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; if ( bmp_info . width <= 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . height == 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . planes != 1 ) ThrowReaderException ( CorruptImageError , \"StaticPlanesValueNotEqualToOne\" ) ; if ( ( bmp_info . bits_per_pixel != 1 ) && ( bmp_info . bits_per_pixel != 4 ) && ( bmp_info . bits_per_pixel != 8 ) && ( bmp_info . bits_per_pixel != 16 ) && ( bmp_info . bits_per_pixel != 24 ) && ( bmp_info . bits_per_pixel != 32 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( bmp_info . bits_per_pixel < 16 && bmp_info . number_colors > ( 1U << bmp_info . bits_per_pixel ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedNumberOfColors\" ) ; if ( ( bmp_info . compression == 1 ) && ( bmp_info . bits_per_pixel != 8 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 2 ) && ( bmp_info . bits_per_pixel != 4 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 3 ) && ( bmp_info . bits_per_pixel < 16 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; switch ( bmp_info . compression ) { case BI_RGB : image -> compression = NoCompression ; break ; case BI_RLE8 : case BI_RLE4 : image -> compression = RLECompression ; break ; case BI_BITFIELDS : break ; case BI_JPEG : ThrowReaderException ( CoderError , \"JPEGCompressNotSupported\" ) ; case BI_PNG : ThrowReaderException ( CoderError , \"PNGCompressNotSupported\" ) ; default : ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } image -> columns = ( size_t ) MagickAbsoluteValue ( bmp_info . width ) ; image -> rows = ( size_t ) MagickAbsoluteValue ( bmp_info . height ) ; image -> depth = bmp_info . bits_per_pixel <= 8 ? bmp_info . bits_per_pixel : 8 ; image -> alpha_trait = ( ( bmp_info . alpha_mask != 0 ) && ( bmp_info . compression == BI_BITFIELDS ) ) ? BlendPixelTrait : UndefinedPixelTrait ; if ( bmp_info . bits_per_pixel < 16 ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = bmp_info . number_colors ; one = 1 ; if ( image -> colors == 0 ) image -> colors = one << bmp_info . bits_per_pixel ; } image -> resolution . x = ( double ) bmp_info . x_pixels / 100.0 ; image -> resolution . y = ( double ) bmp_info . y_pixels / 100.0 ; image -> units = PixelsPerCentimeterResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> storage_class == PseudoClass ) { unsigned char * bmp_colormap ; size_t packet_size ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>colormap<S2SV_blank>of<S2SV_blank>%.20g<S2SV_blank>colors\" , ( double ) image -> colors ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bmp_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) image -> colors , 4 * sizeof ( * bmp_colormap ) ) ; if ( bmp_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bmp_info . size == 12 ) || ( bmp_info . size == 64 ) ) packet_size = 3 ; else packet_size = 4 ; offset = SeekBlob ( image , start_position + 14 + bmp_info . size , SEEK_SET ) ; if ( offset < 0 ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } count = ReadBlob ( image , packet_size * image -> colors , bmp_colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = bmp_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; if ( packet_size == 4 ) p ++ ; } bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; } if ( bmp_info . offset_bits == offset_bits ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; offset_bits = bmp_info . offset_bits ; offset = SeekBlob ( image , start_position + bmp_info . offset_bits , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( bmp_info . compression == BI_RLE4 ) bmp_info . bits_per_pixel <<= 1 ; bytes_per_line = 4 * ( ( image -> columns * bmp_info . bits_per_pixel + 31 ) / 32 ) ; length = ( size_t ) bytes_per_line * image -> rows ; if ( ( bmp_info . compression == BI_RGB ) || ( bmp_info . compression == BI_BITFIELDS ) ) { if ( ( MagickSizeType ) length > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>pixels<S2SV_blank>(%.20g<S2SV_blank>bytes)\" , ( double ) length ) ; count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } } else { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; status = DecodeImage ( image , bmp_info . compression , pixels , image -> columns * image -> rows ) ; if ( status == MagickFalse ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToRunlengthDecodeImage\" ) ; } } if ( bmp_info . compression == BI_RGB ) { if ( ( image -> alpha_trait == UndefinedPixelTrait ) && ( bmp_info . size == 40 ) && ( bmp_info . bits_per_pixel == 32 ) ) { bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( * ( p + 3 ) != 0 ) { image -> alpha_trait = BlendPixelTrait ; y = - 1 ; break ; } p += 4 ; } } } bmp_info . alpha_mask = image -> alpha_trait != UndefinedPixelTrait ? 0xff000000U : 0U ; bmp_info . red_mask = 0x00ff0000U ; bmp_info . green_mask = 0x0000ff00U ; bmp_info . blue_mask = 0x000000ffU ; if ( bmp_info . bits_per_pixel == 16 ) { bmp_info . red_mask = 0x00007c00U ; bmp_info . green_mask = 0x000003e0U ; bmp_info . blue_mask = 0x0000001fU ; } } ( void ) memset ( & shift , 0 , sizeof ( shift ) ) ; ( void ) memset ( & quantum_bits , 0 , sizeof ( quantum_bits ) ) ; if ( ( bmp_info . bits_per_pixel == 16 ) || ( bmp_info . bits_per_pixel == 32 ) ) { register unsigned int sample ; if ( bmp_info . red_mask != 0 ) while ( ( ( bmp_info . red_mask << shift . red ) & 0x80000000UL ) == 0 ) { shift . red ++ ; if ( shift . red >= 32U ) break ; } if ( bmp_info . green_mask != 0 ) while ( ( ( bmp_info . green_mask << shift . green ) & 0x80000000UL ) == 0 ) { shift . green ++ ; if ( shift . green >= 32U ) break ; } if ( bmp_info . blue_mask != 0 ) while ( ( ( bmp_info . blue_mask << shift . blue ) & 0x80000000UL ) == 0 ) { shift . blue ++ ; if ( shift . blue >= 32U ) break ; } if ( bmp_info . alpha_mask != 0 ) while ( ( ( bmp_info . alpha_mask << shift . alpha ) & 0x80000000UL ) == 0 ) { shift . alpha ++ ; if ( shift . alpha >= 32U ) break ; } sample = shift . red ; while ( ( ( bmp_info . red_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . red = ( MagickRealType ) ( sample - shift . red ) ; sample = shift . green ; while ( ( ( bmp_info . green_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . green = ( MagickRealType ) ( sample - shift . green ) ; sample = shift . blue ; while ( ( ( bmp_info . blue_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . blue = ( MagickRealType ) ( sample - shift . blue ) ; sample = shift . alpha ; while ( ( ( bmp_info . alpha_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . alpha = ( MagickRealType ) ( sample - shift . alpha ) ; } switch ( bmp_info . bits_per_pixel ) { case 1 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 4 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; ValidateColormapValue ( image , ( ssize_t ) ( * p & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0xf ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; x ++ ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 8 : { if ( ( bmp_info . compression == BI_RLE8 ) || ( bmp_info . compression == BI_RLE4 ) ) bytes_per_line = image -> columns ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = ( ssize_t ) image -> columns ; x != 0 ; -- x ) { ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 16 : { unsigned int alpha , pixel ; if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 2 * ( image -> columns + image -> columns % 2 ) ; image -> storage_class = DirectClass ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( * p ++ ) << 8 ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 5 ) red |= ( ( red & 0xe000 ) >> 5 ) ; if ( quantum_bits . red <= 8 ) red |= ( ( red & 0xff00 ) >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 5 ) green |= ( ( green & 0xe000 ) >> 5 ) ; if ( quantum_bits . green == 6 ) green |= ( ( green & 0xc000 ) >> 6 ) ; if ( quantum_bits . green <= 8 ) green |= ( ( green & 0xff00 ) >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 5 ) blue |= ( ( blue & 0xe000 ) >> 5 ) ; if ( quantum_bits . blue <= 8 ) blue |= ( ( blue & 0xff00 ) >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha <= 8 ) alpha |= ( ( alpha & 0xff00 ) >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 24 : { bytes_per_line = 4 * ( ( image -> columns * 24 + 31 ) / 32 ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 32 : { if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { unsigned int alpha , pixel ; p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( ( unsigned int ) * p ++ << 8 ) ; pixel |= ( ( unsigned int ) * p ++ << 16 ) ; pixel |= ( ( unsigned int ) * p ++ << 24 ) ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 8 ) red |= ( red >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 8 ) green |= ( green >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 8 ) blue |= ( blue >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha == 8 ) alpha |= ( alpha >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } default : { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( y > 0 ) break ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( bmp_info . height < 0 ) { Image * flipped_image ; flipped_image = FlipImage ( image , exception ) ; if ( flipped_image != ( Image * ) NULL ) { DuplicateBlob ( flipped_image , image ) ; ReplaceImageInList ( & image , flipped_image ) ; image = flipped_image ; } } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; <S2SV_StartBug> * magick = '\\\\0' ; <S2SV_EndBug> <S2SV_StartBug> if ( bmp_info . ba_offset != 0 ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> offset = SeekBlob ( image , ( MagickOffsetType ) bmp_info . ba_offset , SEEK_SET ) ; <S2SV_StartBug> if ( offset < 0 ) <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_StartBug> } <S2SV_EndBug> count = ReadBlob ( image , 2 , magick ) ; if ( ( count == 2 ) && ( IsBMP ( magick , 2 ) != MagickFalse ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( IsBMP ( magick , 2 ) != MagickFalse ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( MagickSizeType ) <S2SV_ModStart> ) break ; offset = ( MagickOffsetType ) <S2SV_ModEnd> bmp_info . ba_offset <S2SV_ModStart> bmp_info . ba_offset ; if ( offset <S2SV_ModStart> != 0 ) if ( <S2SV_ModEnd> ( offset < <S2SV_ModStart> ( offset < TellBlob ( image ) ) || ( SeekBlob ( image , offset , SEEK_SET ) != offset ) <S2SV_ModEnd> ) ThrowReaderException ( <S2SV_ModStart> \"ImproperImageHeader\" ) ; * magick = '\\\\0' ; <S2SV_ModEnd> count = ReadBlob\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13050\n\n```\nCWE-125 void rpki_rtr_print ( netdissect_options * ndo , register const u_char * pptr , register u_int len ) { <S2SV_StartBug> u_int tlen , pdu_type , pdu_len ; <S2SV_EndBug> const u_char * tptr ; const rpki_rtr_pdu * pdu_header ; tptr = pptr ; tlen = len ; if ( ! ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \",<S2SV_blank>RPKI-RTR\" ) ) ; return ; } <S2SV_StartBug> while ( tlen >= sizeof ( rpki_rtr_pdu ) ) { <S2SV_EndBug> ND_TCHECK2 ( * tptr , sizeof ( rpki_rtr_pdu ) ) ; pdu_header = ( const rpki_rtr_pdu * ) tptr ; pdu_type = pdu_header -> pdu_type ; pdu_len = EXTRACT_32BITS ( pdu_header -> length ) ; ND_TCHECK2 ( * tptr , pdu_len ) ; if ( ! pdu_type || ! pdu_len ) { break ; } if ( tlen < pdu_len ) { goto trunc ; } <S2SV_StartBug> if ( rpki_rtr_pdu_print ( ndo , tptr , 8 ) ) <S2SV_EndBug> goto trunc ; tlen -= pdu_len ; <S2SV_StartBug> tptr += pdu_len ; <S2SV_EndBug> } <S2SV_StartBug> return ; <S2SV_EndBug> trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) { <S2SV_ModEnd> if ( ! <S2SV_ModStart> } while ( len ) { u_int pdu_len = <S2SV_ModEnd> rpki_rtr_pdu_print ( ndo <S2SV_ModStart> ( ndo , pptr , len , 1 <S2SV_ModEnd> , 8 ) <S2SV_ModStart> , 8 ) ; len <S2SV_ModEnd> -= pdu_len ; <S2SV_ModStart> -= pdu_len ; pptr <S2SV_ModEnd> += pdu_len ; <S2SV_ModStart> pdu_len ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13055\n\n```\nCWE-125 static int isis_print_is_reach_subtlv ( netdissect_options * ndo , const uint8_t * tptr , u_int subt , u_int subl , const char * ident ) { u_int te_class , priority_level , gmpls_switch_cap ; union { float f ; uint32_t i ; } bw ; ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>subTLV<S2SV_blank>#%u,<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( isis_ext_is_reach_subtlv_values , \"unknown\" , subt ) , subt , subl ) ) ; ND_TCHECK2 ( * tptr , subl ) ; switch ( subt ) { case ISIS_SUBTLV_EXT_IS_REACH_ADMIN_GROUP : case ISIS_SUBTLV_EXT_IS_REACH_LINK_LOCAL_REMOTE_ID : case ISIS_SUBTLV_EXT_IS_REACH_LINK_REMOTE_ID : if ( subl >= 4 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; if ( subl == 8 ) ND_PRINT ( ( ndo , \",<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tptr + 4 ) ) ) ; } break ; case ISIS_SUBTLV_EXT_IS_REACH_IPV4_INTF_ADDR : case ISIS_SUBTLV_EXT_IS_REACH_IPV4_NEIGHBOR_ADDR : if ( subl >= sizeof ( struct in_addr ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case ISIS_SUBTLV_EXT_IS_REACH_MAX_LINK_BW : case ISIS_SUBTLV_EXT_IS_REACH_RESERVABLE_BW : if ( subl >= 4 ) { bw . i = EXTRACT_32BITS ( tptr ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; } break ; case ISIS_SUBTLV_EXT_IS_REACH_UNRESERVED_BW : if ( subl >= 32 ) { for ( te_class = 0 ; te_class < 8 ; te_class ++ ) { bw . i = EXTRACT_32BITS ( tptr ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>TE-Class<S2SV_blank>%u:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , ident , te_class , bw . f * 8 / 1000000 ) ) ; tptr += 4 ; } } break ; case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS : case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%sBandwidth<S2SV_blank>Constraints<S2SV_blank>Model<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(%u)\" , <S2SV_EndBug> ident , tok2str ( diffserv_te_bc_values , \"unknown\" , * tptr ) , * tptr ) ) ; tptr ++ ; for ( te_class = 0 ; te_class < ( subl - 1 ) / 4 ; te_class ++ ) { <S2SV_StartBug> ND_TCHECK2 ( * tptr , 4 ) ; <S2SV_EndBug> bw . i = EXTRACT_32BITS ( tptr ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Bandwidth<S2SV_blank>constraint<S2SV_blank>CT%u:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , ident , te_class , bw . f * 8 / 1000000 ) ) ; tptr += 4 ; } break ; case ISIS_SUBTLV_EXT_IS_REACH_TE_METRIC : if ( subl >= 3 ) ND_PRINT ( ( ndo , \",<S2SV_blank>%u\" , EXTRACT_24BITS ( tptr ) ) ) ; break ; case ISIS_SUBTLV_EXT_IS_REACH_LINK_ATTRIBUTE : if ( subl == 2 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>[<S2SV_blank>%s<S2SV_blank>]<S2SV_blank>(0x%04x)\" , bittok2str ( isis_subtlv_link_attribute_values , \"Unknown\" , EXTRACT_16BITS ( tptr ) ) , EXTRACT_16BITS ( tptr ) ) ) ; } break ; case ISIS_SUBTLV_EXT_IS_REACH_LINK_PROTECTION_TYPE : if ( subl >= 2 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>%s,<S2SV_blank>Priority<S2SV_blank>%u\" , bittok2str ( gmpls_link_prot_values , \"none\" , * tptr ) , * ( tptr + 1 ) ) ) ; } break ; case ISIS_SUBTLV_SPB_METRIC : if ( subl >= 6 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>LM:<S2SV_blank>%u\" , EXTRACT_24BITS ( tptr ) ) ) ; tptr = tptr + 3 ; ND_PRINT ( ( ndo , \",<S2SV_blank>P:<S2SV_blank>%u\" , * ( tptr ) ) ) ; tptr ++ ; ND_PRINT ( ( ndo , \",<S2SV_blank>P-ID:<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr ) ) ) ; } break ; case ISIS_SUBTLV_EXT_IS_REACH_INTF_SW_CAP_DESCR : if ( subl >= 36 ) { gmpls_switch_cap = * tptr ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Interface<S2SV_blank>Switching<S2SV_blank>Capability:%s\" , ident , tok2str ( gmpls_switch_cap_values , \"Unknown\" , gmpls_switch_cap ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>LSP<S2SV_blank>Encoding:<S2SV_blank>%s\" , tok2str ( gmpls_encoding_values , \"Unknown\" , * ( tptr + 1 ) ) ) ) ; tptr += 4 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Max<S2SV_blank>LSP<S2SV_blank>Bandwidth:\" , ident ) ) ; for ( priority_level = 0 ; priority_level < 8 ; priority_level ++ ) { bw . i = EXTRACT_32BITS ( tptr ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>priority<S2SV_blank>level<S2SV_blank>%d:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , ident , priority_level , bw . f * 8 / 1000000 ) ) ; tptr += 4 ; } subl -= 36 ; switch ( gmpls_switch_cap ) { case GMPLS_PSC1 : case GMPLS_PSC2 : case GMPLS_PSC3 : case GMPLS_PSC4 : ND_TCHECK2 ( * tptr , 6 ) ; bw . i = EXTRACT_32BITS ( tptr ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Min<S2SV_blank>LSP<S2SV_blank>Bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , ident , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Interface<S2SV_blank>MTU:<S2SV_blank>%u\" , ident , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case GMPLS_TSC : ND_TCHECK2 ( * tptr , 8 ) ; bw . i = EXTRACT_32BITS ( tptr ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Min<S2SV_blank>LSP<S2SV_blank>Bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , ident , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Indication<S2SV_blank>%s\" , ident , tok2str ( gmpls_switch_cap_tsc_indication_values , \"Unknown<S2SV_blank>(%u)\" , * ( tptr + 4 ) ) ) ) ; break ; default : if ( subl > 0 ) { if ( ! print_unknown_data ( ndo , tptr , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , subl ) ) return ( 0 ) ; } } } break ; default : if ( ! print_unknown_data ( ndo , tptr , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , subl ) ) return ( 0 ) ; break ; } return ( 1 ) ; trunc : return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case ISIS_SUBTLV_EXT_IS_REACH_BW_CONSTRAINTS_OLD : if ( subl == 0 ) break ; <S2SV_ModStart> ++ ) { <S2SV_ModEnd> bw . i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000115\n\n```\nCWE-400 static void settings_init ( void ) { settings . use_cas = true ; settings . access = 0700 ; settings . port = 11211 ; <S2SV_StartBug> settings . udpport = 11211 ; <S2SV_EndBug> settings . inter = NULL ; settings . maxbytes = 64 * 1024 * 1024 ; settings . maxconns = 1024 ; settings . verbose = 0 ; settings . oldest_live = 0 ; settings . oldest_cas = 0 ; settings . evict_to_free = 1 ; settings . socketpath = NULL ; settings . factor = 1.25 ; settings . chunk_size = 48 ; settings . num_threads = 4 ; settings . num_threads_per_udp = 0 ; settings . prefix_delimiter = ':' ; settings . detail_enabled = 0 ; settings . reqs_per_event = 20 ; settings . backlog = 1024 ; settings . binding_protocol = negotiating_prot ; settings . item_size_max = 1024 * 1024 ; settings . slab_page_size = 1024 * 1024 ; settings . slab_chunk_size_max = settings . slab_page_size / 2 ; settings . sasl = false ; settings . maxconns_fast = true ; settings . lru_crawler = false ; settings . lru_crawler_sleep = 100 ; settings . lru_crawler_tocrawl = 0 ; settings . lru_maintainer_thread = false ; settings . lru_segmented = true ; settings . hot_lru_pct = 20 ; settings . warm_lru_pct = 40 ; settings . hot_max_factor = 0.2 ; settings . warm_max_factor = 2.0 ; settings . inline_ascii_response = false ; settings . temp_lru = false ; settings . temporary_ttl = 61 ; settings . idle_timeout = 0 ; settings . hashpower_init = 0 ; settings . slab_reassign = true ; settings . slab_automove = 1 ; settings . slab_automove_ratio = 0.8 ; settings . slab_automove_window = 30 ; settings . shutdown_command = false ; settings . tail_repair_time = TAIL_REPAIR_TIME_DEFAULT ; settings . flush_enabled = true ; settings . dump_enabled = true ; settings . crawls_persleep = 1000 ; settings . logger_watcher_buf_size = LOGGER_WATCHER_BUF_SIZE ; settings . logger_buf_size = LOGGER_BUF_SIZE ; settings . drop_privileges = true ; # ifdef MEMCACHED_DEBUG settings . relaxed_privileges = false ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . udpport = 0 <S2SV_ModEnd> ; settings .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6271\n\n```\nCWE-254 int main ( int argc , char * argv [ ] ) { int i , fails_count = 0 ; CU_pSuite cryptoUtilsTestSuite , parserTestSuite ; CU_pSuite * suites [ ] = { & cryptoUtilsTestSuite , & parserTestSuite , NULL } ; if ( argc > 1 ) { if ( argv [ 1 ] [ 0 ] == '-' ) { if ( strcmp ( argv [ 1 ] , \"-verbose\" ) == 0 ) { verbose = 1 ; } else { printf ( \"Usage:\\\\n<S2SV_blank>%s<S2SV_blank>[-verbose]<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>extensive<S2SV_blank>logging\\\\n\" , argv [ 0 ] ) ; return 1 ; } } else { printf ( \"Usage:\\\\n<S2SV_blank>%s<S2SV_blank>[-verbose]<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>extensive<S2SV_blank>logging\\\\n\" , argv [ 0 ] ) ; return 1 ; } } # ifdef HAVE_LIBXML2 xmlInitParser ( ) ; # endif if ( CUE_SUCCESS != CU_initialize_registry ( ) ) { return CU_get_error ( ) ; } cryptoUtilsTestSuite = CU_add_suite ( \"Bzrtp<S2SV_blank>Crypto<S2SV_blank>Utils\" , NULL , NULL ) ; CU_add_test ( cryptoUtilsTestSuite , \"zrtpKDF\" , test_zrtpKDF ) ; CU_add_test ( cryptoUtilsTestSuite , \"CRC32\" , test_CRC32 ) ; CU_add_test ( cryptoUtilsTestSuite , \"algo<S2SV_blank>agreement\" , test_algoAgreement ) ; CU_add_test ( cryptoUtilsTestSuite , \"context<S2SV_blank>algo<S2SV_blank>setter<S2SV_blank>and<S2SV_blank>getter\" , test_algoSetterGetter ) ; CU_add_test ( cryptoUtilsTestSuite , \"adding<S2SV_blank>mandatory<S2SV_blank>crypto<S2SV_blank>algorithms<S2SV_blank>if<S2SV_blank>needed\" , test_addMandatoryCryptoTypesIfNeeded ) ; parserTestSuite = CU_add_suite ( \"Bzrtp<S2SV_blank>ZRTP<S2SV_blank>Packet<S2SV_blank>Parser\" , NULL , NULL ) ; CU_add_test ( parserTestSuite , \"Parse\" , test_parser ) ; <S2SV_StartBug> CU_add_test ( parserTestSuite , \"Parse<S2SV_blank>Exchange\" , test_parserComplete ) ; <S2SV_EndBug> CU_add_test ( parserTestSuite , \"State<S2SV_blank>machine\" , test_stateMachine ) ; for ( i = 0 ; suites [ i ] ; i ++ ) { CU_basic_run_suite ( * suites [ i ] ) ; fails_count += CU_get_number_of_tests_failed ( ) ; } CU_cleanup_registry ( ) ; # ifdef HAVE_LIBXML2 xmlCleanupParser ( ) ; # endif return ( fails_count == 0 ? 0 : 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( parserTestSuite , \"Parse<S2SV_blank>hvi<S2SV_blank>check<S2SV_blank>fail\" , test_parser_hvi ) ; CU_add_test ( parserTestSuite ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4530\n\n```\nCWE-200 static int load_misc_binary ( struct linux_binprm * bprm ) { Node * fmt ; struct file * interp_file = NULL ; char iname [ BINPRM_BUF_SIZE ] ; const char * iname_addr = iname ; int retval ; int fd_binary = - 1 ; retval = - ENOEXEC ; if ( ! enabled ) goto _ret ; read_lock ( & entries_lock ) ; fmt = check_file ( bprm ) ; if ( fmt ) strlcpy ( iname , fmt -> interpreter , BINPRM_BUF_SIZE ) ; read_unlock ( & entries_lock ) ; if ( ! fmt ) goto _ret ; if ( ! ( fmt -> flags & MISC_FMT_PRESERVE_ARGV0 ) ) { retval = remove_arg_zero ( bprm ) ; if ( retval ) goto _ret ; } if ( fmt -> flags & MISC_FMT_OPEN_BINARY ) { fd_binary = get_unused_fd ( ) ; if ( fd_binary < 0 ) { retval = fd_binary ; goto _ret ; } fd_install ( fd_binary , bprm -> file ) ; would_dump ( bprm , bprm -> file ) ; allow_write_access ( bprm -> file ) ; bprm -> file = NULL ; bprm -> interp_flags |= BINPRM_FLAGS_EXECFD ; bprm -> interp_data = fd_binary ; } else { allow_write_access ( bprm -> file ) ; fput ( bprm -> file ) ; bprm -> file = NULL ; } retval = copy_strings_kernel ( 1 , & bprm -> interp , bprm ) ; if ( retval < 0 ) goto _error ; bprm -> argc ++ ; retval = copy_strings_kernel ( 1 , & iname_addr , bprm ) ; if ( retval < 0 ) goto _error ; bprm -> argc ++ ; <S2SV_StartBug> bprm -> interp = iname ; <S2SV_EndBug> interp_file = open_exec ( iname ) ; retval = PTR_ERR ( interp_file ) ; if ( IS_ERR ( interp_file ) ) goto _error ; bprm -> file = interp_file ; if ( fmt -> flags & MISC_FMT_CREDENTIALS ) { memset ( bprm -> buf , 0 , BINPRM_BUF_SIZE ) ; retval = kernel_read ( bprm -> file , 0 , bprm -> buf , BINPRM_BUF_SIZE ) ; } else retval = prepare_binprm ( bprm ) ; if ( retval < 0 ) goto _error ; retval = search_binary_handler ( bprm ) ; if ( retval < 0 ) goto _error ; _ret : return retval ; _error : if ( fd_binary > 0 ) sys_close ( fd_binary ) ; bprm -> interp_flags = 0 ; bprm -> interp_data = 0 ; goto _ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> argc ++ ; retval = bprm_change_interp ( iname , bprm ) ; if ( retval < 0 ) goto _error <S2SV_ModEnd> ; interp_file =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int vsock_stream_recvmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk ; struct vsock_sock * vsk ; int err ; size_t target ; ssize_t copied ; long timeout ; struct vsock_transport_recv_notify_data recv_data ; DEFINE_WAIT ( wait ) ; sk = sock -> sk ; vsk = vsock_sk ( sk ) ; err = 0 ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> lock_sock ( sk ) ; if ( sk -> sk_state != SS_CONNECTED ) { if ( sock_flag ( sk , SOCK_DONE ) ) err = 0 ; else err = - ENOTCONN ; goto out ; } if ( flags & MSG_OOB ) { err = - EOPNOTSUPP ; goto out ; } if ( sk -> sk_shutdown & RCV_SHUTDOWN ) { err = 0 ; goto out ; } if ( ! len ) { err = 0 ; goto out ; } target = sock_rcvlowat ( sk , flags & MSG_WAITALL , len ) ; if ( target >= transport -> stream_rcvhiwat ( vsk ) ) { err = - ENOMEM ; goto out ; } timeout = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; copied = 0 ; err = transport -> notify_recv_init ( vsk , target , & recv_data ) ; if ( err < 0 ) goto out ; prepare_to_wait ( sk_sleep ( sk ) , & wait , TASK_INTERRUPTIBLE ) ; while ( 1 ) { s64 ready = vsock_stream_has_data ( vsk ) ; if ( ready < 0 ) { err = - ENOMEM ; goto out_wait ; } else if ( ready > 0 ) { ssize_t read ; err = transport -> notify_recv_pre_dequeue ( vsk , target , & recv_data ) ; if ( err < 0 ) break ; read = transport -> stream_dequeue ( vsk , msg -> msg_iov , len - copied , flags ) ; if ( read < 0 ) { err = - ENOMEM ; break ; } copied += read ; err = transport -> notify_recv_post_dequeue ( vsk , target , read , ! ( flags & MSG_PEEK ) , & recv_data ) ; if ( err < 0 ) goto out_wait ; if ( read >= target || flags & MSG_PEEK ) break ; target -= read ; } else { if ( sk -> sk_err != 0 || ( sk -> sk_shutdown & RCV_SHUTDOWN ) || ( vsk -> peer_shutdown & SEND_SHUTDOWN ) ) { break ; } if ( timeout == 0 ) { err = - EAGAIN ; break ; } err = transport -> notify_recv_pre_block ( vsk , target , & recv_data ) ; if ( err < 0 ) break ; release_sock ( sk ) ; timeout = schedule_timeout ( timeout ) ; lock_sock ( sk ) ; if ( signal_pending ( current ) ) { err = sock_intr_errno ( timeout ) ; break ; } else if ( timeout == 0 ) { err = - EAGAIN ; break ; } prepare_to_wait ( sk_sleep ( sk ) , & wait , TASK_INTERRUPTIBLE ) ; } } if ( sk -> sk_err ) err = - sk -> sk_err ; else if ( sk -> sk_shutdown & RCV_SHUTDOWN ) err = 0 ; if ( copied > 0 ) { if ( ! ( flags & MSG_PEEK ) ) { if ( vsk -> peer_shutdown & SEND_SHUTDOWN ) { if ( vsock_stream_has_data ( vsk ) <= 0 ) { sk -> sk_state = SS_UNCONNECTED ; sock_set_flag ( sk , SOCK_DONE ) ; sk -> sk_state_change ( sk ) ; } } } err = copied ; } out_wait : finish_wait ( sk_sleep ( sk ) , & wait ) ; out : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> lock_sock ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10210\n\n```\nCWE-476 YY_DECL { yy_state_type yy_current_state ; char * yy_cp , * yy_bp ; int yy_act ; struct yyguts_t * yyg = ( struct yyguts_t * ) yyscanner ; yylval = yylval_param ; if ( ! yyg -> yy_init ) { yyg -> yy_init = 1 ; # ifdef YY_USER_INIT YY_USER_INIT ; # endif if ( ! yyg -> yy_start ) yyg -> yy_start = 1 ; if ( ! yyin ) yyin = stdin ; if ( ! yyout ) yyout = stdout ; if ( ! YY_CURRENT_BUFFER ) { re_yyensure_buffer_stack ( yyscanner ) ; YY_CURRENT_BUFFER_LVALUE = re_yy_create_buffer ( yyin , YY_BUF_SIZE , yyscanner ) ; } re_yy_load_buffer_state ( yyscanner ) ; } { # line 99 \"re_lexer.l\" # line 863 \"re_lexer.c\" while ( 1 ) { yy_cp = yyg -> yy_c_buf_p ; * yy_cp = yyg -> yy_hold_char ; yy_bp = yy_cp ; yy_current_state = yyg -> yy_start ; yy_match : do { YY_CHAR yy_c = yy_ec [ YY_SC_TO_UI ( * yy_cp ) ] ; if ( yy_accept [ yy_current_state ] ) { yyg -> yy_last_accepting_state = yy_current_state ; yyg -> yy_last_accepting_cpos = yy_cp ; } while ( yy_chk [ yy_base [ yy_current_state ] + yy_c ] != yy_current_state ) { yy_current_state = ( int ) yy_def [ yy_current_state ] ; if ( yy_current_state >= 45 ) yy_c = yy_meta [ ( unsigned int ) yy_c ] ; } yy_current_state = yy_nxt [ yy_base [ yy_current_state ] + ( unsigned int ) yy_c ] ; ++ yy_cp ; } while ( yy_current_state != 44 ) ; yy_cp = yyg -> yy_last_accepting_cpos ; yy_current_state = yyg -> yy_last_accepting_state ; yy_find_action : yy_act = yy_accept [ yy_current_state ] ; YY_DO_BEFORE_ACTION ; if ( yy_act != YY_END_OF_BUFFER && yy_rule_can_match_eol [ yy_act ] ) { yy_size_t yyl ; for ( yyl = 0 ; yyl < yyleng ; ++ yyl ) if ( yytext [ yyl ] == '\\\\n' ) do { yylineno ++ ; yycolumn = 0 ; } while ( 0 ) ; } do_action : switch ( yy_act ) { case 0 : * yy_cp = yyg -> yy_hold_char ; yy_cp = yyg -> yy_last_accepting_cpos ; yy_current_state = yyg -> yy_last_accepting_state ; goto yy_find_action ; case 1 : YY_RULE_SETUP # line 101 \"re_lexer.l\" { int hi_bound ; int lo_bound = atoi ( yytext + 1 ) ; char * comma = strchr ( yytext , ',' ) ; if ( comma - yytext == strlen ( yytext ) - 2 ) hi_bound = INT16_MAX ; else hi_bound = atoi ( comma + 1 ) ; if ( hi_bound > INT16_MAX ) { yyerror ( yyscanner , lex_env , \"repeat<S2SV_blank>interval<S2SV_blank>too<S2SV_blank>large\" ) ; yyterminate ( ) ; } if ( hi_bound < lo_bound || hi_bound < 0 || lo_bound < 0 ) { yyerror ( yyscanner , lex_env , \"bad<S2SV_blank>repeat<S2SV_blank>interval\" ) ; yyterminate ( ) ; } yylval -> range = ( hi_bound << 16 ) | lo_bound ; return _RANGE_ ; } YY_BREAK case 2 : YY_RULE_SETUP # line 135 \"re_lexer.l\" { int value = atoi ( yytext + 1 ) ; if ( value > INT16_MAX ) { yyerror ( yyscanner , lex_env , \"repeat<S2SV_blank>interval<S2SV_blank>too<S2SV_blank>large\" ) ; yyterminate ( ) ; } yylval -> range = ( value << 16 ) | value ; return _RANGE_ ; } YY_BREAK case 3 : YY_RULE_SETUP # line 153 \"re_lexer.l\" { BEGIN ( char_class ) ; memset ( LEX_ENV -> class_vector , 0 , 32 ) ; LEX_ENV -> negated_class = TRUE ; } YY_BREAK case 4 : YY_RULE_SETUP # line 162 \"re_lexer.l\" { BEGIN ( char_class ) ; memset ( LEX_ENV -> class_vector , 0 , 32 ) ; LEX_ENV -> negated_class = TRUE ; LEX_ENV -> class_vector [ ']' / 8 ] |= 1 << ']' % 8 ; } YY_BREAK case 5 : YY_RULE_SETUP # line 175 \"re_lexer.l\" { BEGIN ( char_class ) ; memset ( LEX_ENV -> class_vector , 0 , 32 ) ; LEX_ENV -> negated_class = FALSE ; LEX_ENV -> class_vector [ ']' / 8 ] |= 1 << ']' % 8 ; } YY_BREAK case 6 : YY_RULE_SETUP # line 188 \"re_lexer.l\" { BEGIN ( char_class ) ; memset ( LEX_ENV -> class_vector , 0 , 32 ) ; LEX_ENV -> negated_class = FALSE ; } YY_BREAK case 7 : YY_RULE_SETUP # line 198 \"re_lexer.l\" { yylval -> integer = yytext [ 0 ] ; return _CHAR_ ; } YY_BREAK case 8 : YY_RULE_SETUP # line 207 \"re_lexer.l\" { return _WORD_CHAR_ ; } YY_BREAK case 9 : YY_RULE_SETUP # line 212 \"re_lexer.l\" { return _NON_WORD_CHAR_ ; } YY_BREAK case 10 : YY_RULE_SETUP # line 217 \"re_lexer.l\" { return _SPACE_ ; } YY_BREAK case 11 : YY_RULE_SETUP # line 222 \"re_lexer.l\" { return _NON_SPACE_ ; } YY_BREAK case 12 : YY_RULE_SETUP # line 227 \"re_lexer.l\" { return _DIGIT_ ; } YY_BREAK case 13 : YY_RULE_SETUP # line 232 \"re_lexer.l\" { return _NON_DIGIT_ ; } YY_BREAK case 14 : YY_RULE_SETUP # line 237 \"re_lexer.l\" { return _WORD_BOUNDARY_ ; } YY_BREAK case 15 : YY_RULE_SETUP # line 241 \"re_lexer.l\" { return _NON_WORD_BOUNDARY_ ; } YY_BREAK case 16 : YY_RULE_SETUP # line 246 \"re_lexer.l\" { yyerror ( yyscanner , lex_env , \"backreferences<S2SV_blank>are<S2SV_blank>not<S2SV_blank>allowed\" ) ; yyterminate ( ) ; } YY_BREAK case 17 : YY_RULE_SETUP # line 253 \"re_lexer.l\" { uint8_t c ; if ( read_escaped_char ( yyscanner , & c ) ) { yylval -> integer = c ; return _CHAR_ ; } else { <S2SV_StartBug> yyerror ( yyscanner , lex_env , \"unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer\" ) ; <S2SV_EndBug> yyterminate ( ) ; } } YY_BREAK case 18 : YY_RULE_SETUP # line 270 \"re_lexer.l\" { int i ; yylval -> class_vector = ( uint8_t * ) yr_malloc ( 32 ) ; memcpy ( yylval -> class_vector , LEX_ENV -> class_vector , 32 ) ; if ( LEX_ENV -> negated_class ) { for ( i = 0 ; i < 32 ; i ++ ) yylval -> class_vector [ i ] = ~ yylval -> class_vector [ i ] ; } BEGIN ( INITIAL ) ; return _CLASS_ ; } YY_BREAK case 19 : YY_RULE_SETUP # line 291 \"re_lexer.l\" { uint16_t c ; uint8_t start = yytext [ 0 ] ; uint8_t end = yytext [ 2 ] ; if ( start == '\\\\\\\\' ) { start = escaped_char_value ( yytext ) ; if ( yytext [ 1 ] == 'x' ) end = yytext [ 5 ] ; else end = yytext [ 3 ] ; } if ( end == '\\\\\\\\' ) { if ( ! read_escaped_char ( yyscanner , & end ) ) { <S2SV_StartBug> yyerror ( yyscanner , lex_env , \"unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer\" ) ; <S2SV_EndBug> yyterminate ( ) ; } } if ( end < start ) { yyerror ( yyscanner , lex_env , \"bad<S2SV_blank>character<S2SV_blank>range\" ) ; yyterminate ( ) ; } for ( c = start ; c <= end ; c ++ ) { LEX_ENV -> class_vector [ c / 8 ] |= 1 << c % 8 ; } } YY_BREAK case 20 : YY_RULE_SETUP # line 333 \"re_lexer.l\" { int i ; for ( i = 0 ; i < 32 ; i ++ ) LEX_ENV -> class_vector [ i ] |= word_chars [ i ] ; } YY_BREAK case 21 : YY_RULE_SETUP # line 342 \"re_lexer.l\" { int i ; for ( i = 0 ; i < 32 ; i ++ ) LEX_ENV -> class_vector [ i ] |= ~ word_chars [ i ] ; } YY_BREAK case 22 : YY_RULE_SETUP # line 351 \"re_lexer.l\" { LEX_ENV -> class_vector [ '<S2SV_blank>' / 8 ] |= 1 << '<S2SV_blank>' % 8 ; LEX_ENV -> class_vector [ '\\\\t' / 8 ] |= 1 << '\\\\t' % 8 ; } YY_BREAK case 23 : YY_RULE_SETUP # line 358 \"re_lexer.l\" { int i ; for ( i = 0 ; i < 32 ; i ++ ) { if ( i == '<S2SV_blank>' / 8 ) LEX_ENV -> class_vector [ i ] |= ~ ( 1 << '<S2SV_blank>' % 8 ) ; else if ( i == '\\\\t' / 8 ) LEX_ENV -> class_vector [ i ] |= ~ ( 1 << '\\\\t' % 8 ) ; else LEX_ENV -> class_vector [ i ] = 0xFF ; } } YY_BREAK case 24 : YY_RULE_SETUP # line 374 \"re_lexer.l\" { char c ; for ( c = '0' ; c <= '9' ; c ++ ) LEX_ENV -> class_vector [ c / 8 ] |= 1 << c % 8 ; } YY_BREAK case 25 : YY_RULE_SETUP # line 383 \"re_lexer.l\" { int i ; for ( i = 0 ; i < 32 ; i ++ ) { if ( i == 6 ) continue ; if ( i == 7 ) LEX_ENV -> class_vector [ i ] |= 0xFC ; else LEX_ENV -> class_vector [ i ] = 0xFF ; } } YY_BREAK case 26 : YY_RULE_SETUP # line 403 \"re_lexer.l\" { uint8_t c ; if ( read_escaped_char ( yyscanner , & c ) ) { LEX_ENV -> class_vector [ c / 8 ] |= 1 << c % 8 ; } else { <S2SV_StartBug> yyerror ( yyscanner , lex_env , \"unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer\" ) ; <S2SV_EndBug> yyterminate ( ) ; } } YY_BREAK case 27 : YY_RULE_SETUP # line 419 \"re_lexer.l\" { if ( yytext [ 0 ] >= 32 && yytext [ 0 ] < 127 ) { LEX_ENV -> class_vector [ yytext [ 0 ] / 8 ] |= 1 << yytext [ 0 ] % 8 ; } else { yyerror ( yyscanner , lex_env , \"non-ascii<S2SV_blank>character\" ) ; yyterminate ( ) ; } } YY_BREAK case YY_STATE_EOF ( char_class ) : # line 436 \"re_lexer.l\" { yyerror ( yyscanner , lex_env , \"missing<S2SV_blank>terminating<S2SV_blank>]<S2SV_blank>for<S2SV_blank>character<S2SV_blank>class\" ) ; yyterminate ( ) ; } YY_BREAK case 28 : YY_RULE_SETUP # line 445 \"re_lexer.l\" { if ( yytext [ 0 ] >= 32 && yytext [ 0 ] < 127 ) { return yytext [ 0 ] ; } else { yyerror ( yyscanner , lex_env , \"non-ascii<S2SV_blank>character\" ) ; yyterminate ( ) ; } } YY_BREAK case YY_STATE_EOF ( INITIAL ) : # line 459 \"re_lexer.l\" { yyterminate ( ) ; } YY_BREAK case 29 : YY_RULE_SETUP # line 464 \"re_lexer.l\" ECHO ; YY_BREAK # line 1358 \"re_lexer.c\" case YY_END_OF_BUFFER : { int yy_amount_of_matched_text = ( int ) ( yy_cp - yyg -> yytext_ptr ) - 1 ; * yy_cp = yyg -> yy_hold_char ; YY_RESTORE_YY_MORE_OFFSET if ( YY_CURRENT_BUFFER_LVALUE -> yy_buffer_status == YY_BUFFER_NEW ) { yyg -> yy_n_chars = YY_CURRENT_BUFFER_LVALUE -> yy_n_chars ; YY_CURRENT_BUFFER_LVALUE -> yy_input_file = yyin ; YY_CURRENT_BUFFER_LVALUE -> yy_buffer_status = YY_BUFFER_NORMAL ; } if ( yyg -> yy_c_buf_p <= & YY_CURRENT_BUFFER_LVALUE -> yy_ch_buf [ yyg -> yy_n_chars ] ) { yy_state_type yy_next_state ; yyg -> yy_c_buf_p = yyg -> yytext_ptr + yy_amount_of_matched_text ; yy_current_state = yy_get_previous_state ( yyscanner ) ; yy_next_state = yy_try_NUL_trans ( yy_current_state , yyscanner ) ; yy_bp = yyg -> yytext_ptr + YY_MORE_ADJ ; if ( yy_next_state ) { yy_cp = ++ yyg -> yy_c_buf_p ; yy_current_state = yy_next_state ; goto yy_match ; } else { yy_cp = yyg -> yy_last_accepting_cpos ; yy_current_state = yyg -> yy_last_accepting_state ; goto yy_find_action ; } } else switch ( yy_get_next_buffer ( yyscanner ) ) { case EOB_ACT_END_OF_FILE : { yyg -> yy_did_buffer_switch_on_eof = 0 ; if ( re_yywrap ( yyscanner ) ) { yyg -> yy_c_buf_p = yyg -> yytext_ptr + YY_MORE_ADJ ; yy_act = YY_STATE_EOF ( YY_START ) ; goto do_action ; } else { if ( ! yyg -> yy_did_buffer_switch_on_eof ) YY_NEW_FILE ; } break ; } case EOB_ACT_CONTINUE_SCAN : yyg -> yy_c_buf_p = yyg -> yytext_ptr + yy_amount_of_matched_text ; yy_current_state = yy_get_previous_state ( yyscanner ) ; yy_cp = yyg -> yy_c_buf_p ; yy_bp = yyg -> yytext_ptr + YY_MORE_ADJ ; goto yy_match ; case EOB_ACT_LAST_MATCH : yyg -> yy_c_buf_p = & YY_CURRENT_BUFFER_LVALUE -> yy_ch_buf [ yyg -> yy_n_chars ] ; yy_current_state = yy_get_previous_state ( yyscanner ) ; yy_cp = yyg -> yy_c_buf_p ; yy_bp = yyg -> yytext_ptr + YY_MORE_ADJ ; goto yy_find_action ; } break ; } default : YY_FATAL_ERROR ( \"fatal<S2SV_blank>flex<S2SV_blank>scanner<S2SV_blank>internal<S2SV_blank>error--no<S2SV_blank>action<S2SV_blank>found\" ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , lex_env , \"illegal<S2SV_blank>escape<S2SV_blank>sequence\" <S2SV_ModEnd> ) ; yyterminate <S2SV_ModStart> , lex_env , \"illegal<S2SV_blank>escape<S2SV_blank>sequence\" <S2SV_ModEnd> ) ; yyterminate <S2SV_ModStart> , lex_env , \"illegal<S2SV_blank>escape<S2SV_blank>sequence\" <S2SV_ModEnd> ) ; yyterminate\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_pick_inter_mode ( VP8_COMP * cpi , MACROBLOCK * x , int recon_yoffset , int recon_uvoffset , int * returnrate , int * returndistortion , int * returnintra , int mb_row , int mb_col ) { BLOCK * b = & x -> block [ 0 ] ; BLOCKD * d = & x -> e_mbd . block [ 0 ] ; MACROBLOCKD * xd = & x -> e_mbd ; MB_MODE_INFO best_mbmode ; int_mv best_ref_mv_sb [ 2 ] ; int_mv mode_mv_sb [ 2 ] [ MB_MODE_COUNT ] ; int_mv best_ref_mv ; int_mv * mode_mv ; MB_PREDICTION_MODE this_mode ; int num00 ; int mdcounts [ 4 ] ; int best_rd = INT_MAX ; int rd_adjustment = 100 ; int best_intra_rd = INT_MAX ; int mode_index ; int rate ; int rate2 ; int distortion2 ; int bestsme = INT_MAX ; int best_mode_index = 0 ; <S2SV_StartBug> unsigned int sse = INT_MAX , best_rd_sse = INT_MAX ; <S2SV_EndBug> # if CONFIG_TEMPORAL_DENOISING <S2SV_StartBug> unsigned int zero_mv_sse = INT_MAX , best_sse = INT_MAX ; <S2SV_EndBug> # endif <S2SV_StartBug> int sf_improved_mv_pred = cpi -> sf . improved_mv_pred ; <S2SV_EndBug> int_mv mvp ; int near_sadidx [ 8 ] = { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 } ; int saddone = 0 ; int sr = 0 ; unsigned char * plane [ 4 ] [ 3 ] ; int ref_frame_map [ 4 ] ; int sign_bias = 0 ; <S2SV_StartBug> # if CONFIG_MULTI_RES_ENCODING <S2SV_EndBug> int dissim = INT_MAX ; int parent_ref_frame = 0 ; <S2SV_StartBug> int parent_ref_valid = cpi -> oxcf . mr_encoder_id && cpi -> mr_low_res_mv_avail ; <S2SV_EndBug> int_mv parent_ref_mv ; MB_PREDICTION_MODE parent_mode = 0 ; if ( parent_ref_valid ) { int parent_ref_flag ; get_lower_res_motion_info ( cpi , xd , & dissim , & parent_ref_frame , & parent_mode , & parent_ref_mv , mb_row , mb_col ) ; parent_ref_flag = 0 ; if ( parent_ref_frame == LAST_FRAME ) parent_ref_flag = ( cpi -> ref_frame_flags & VP8_LAST_FRAME ) ; else if ( parent_ref_frame == GOLDEN_FRAME ) <S2SV_StartBug> parent_ref_flag = ( cpi -> ref_frame_flags & VP8_GOLD_FRAME ) ; <S2SV_EndBug> else if ( parent_ref_frame == ALTREF_FRAME ) parent_ref_flag = ( cpi -> ref_frame_flags & VP8_ALTR_FRAME ) ; if ( parent_ref_frame && ! parent_ref_flag ) parent_ref_valid = 0 ; <S2SV_StartBug> } <S2SV_EndBug> # endif <S2SV_StartBug> mode_mv = mode_mv_sb [ sign_bias ] ; <S2SV_EndBug> best_ref_mv . as_int = 0 ; <S2SV_StartBug> vpx_memset ( mode_mv_sb , 0 , sizeof ( mode_mv_sb ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( & best_mbmode , 0 , sizeof ( best_mbmode ) ) ; <S2SV_EndBug> # if CONFIG_MULTI_RES_ENCODING if ( parent_ref_valid && parent_ref_frame && dissim < 8 ) { ref_frame_map [ 0 ] = - 1 ; ref_frame_map [ 1 ] = parent_ref_frame ; ref_frame_map [ 2 ] = - 1 ; ref_frame_map [ 3 ] = - 1 ; } else # endif get_reference_search_order ( cpi , ref_frame_map ) ; if ( ref_frame_map [ 1 ] > 0 ) { sign_bias = vp8_find_near_mvs_bias ( & x -> e_mbd , x -> e_mbd . mode_info_context , mode_mv_sb , best_ref_mv_sb , mdcounts , ref_frame_map [ 1 ] , cpi -> common . ref_frame_sign_bias ) ; mode_mv = mode_mv_sb [ sign_bias ] ; best_ref_mv . as_int = best_ref_mv_sb [ sign_bias ] . as_int ; } <S2SV_StartBug> get_predictor_pointers ( cpi , plane , recon_yoffset , recon_uvoffset ) ; <S2SV_EndBug> x -> mbs_tested_so_far ++ ; * returnintra = INT_MAX ; x -> skip = 0 ; x -> e_mbd . mode_info_context -> mbmi . ref_frame = INTRA_FRAME ; <S2SV_StartBug> calculate_zeromv_rd_adjustment ( cpi , x , & rd_adjustment ) ; <S2SV_EndBug> for ( mode_index = 0 ; mode_index < MAX_MODES ; mode_index ++ ) { int frame_cost ; int this_rd = INT_MAX ; int this_ref_frame = ref_frame_map [ vp8_ref_frame_order [ mode_index ] ] ; if ( best_rd <= x -> rd_threshes [ mode_index ] ) continue ; if ( this_ref_frame < 0 ) continue ; x -> e_mbd . mode_info_context -> mbmi . ref_frame = this_ref_frame ; if ( x -> e_mbd . mode_info_context -> mbmi . ref_frame ) { x -> e_mbd . pre . y_buffer = plane [ this_ref_frame ] [ 0 ] ; x -> e_mbd . pre . u_buffer = plane [ this_ref_frame ] [ 1 ] ; x -> e_mbd . pre . v_buffer = plane [ this_ref_frame ] [ 2 ] ; if ( sign_bias != cpi -> common . ref_frame_sign_bias [ this_ref_frame ] ) { sign_bias = cpi -> common . ref_frame_sign_bias [ this_ref_frame ] ; mode_mv = mode_mv_sb [ sign_bias ] ; best_ref_mv . as_int = best_ref_mv_sb [ sign_bias ] . as_int ; } # if CONFIG_MULTI_RES_ENCODING if ( parent_ref_valid ) { if ( vp8_mode_order [ mode_index ] == NEARESTMV && mode_mv [ NEARESTMV ] . as_int == 0 ) continue ; if ( vp8_mode_order [ mode_index ] == NEARMV && mode_mv [ NEARMV ] . as_int == 0 ) continue ; if ( vp8_mode_order [ mode_index ] == NEWMV && parent_mode == ZEROMV && best_ref_mv . as_int == 0 ) continue ; else if ( vp8_mode_order [ mode_index ] == NEWMV && dissim == 0 && best_ref_mv . as_int == parent_ref_mv . as_int ) continue ; } # endif } if ( x -> mode_test_hit_counts [ mode_index ] && ( cpi -> mode_check_freq [ mode_index ] > 1 ) ) { if ( x -> mbs_tested_so_far <= ( cpi -> mode_check_freq [ mode_index ] * x -> mode_test_hit_counts [ mode_index ] ) ) { x -> rd_thresh_mult [ mode_index ] += 4 ; if ( x -> rd_thresh_mult [ mode_index ] > MAX_THRESHMULT ) x -> rd_thresh_mult [ mode_index ] = MAX_THRESHMULT ; x -> rd_threshes [ mode_index ] = ( cpi -> rd_baseline_thresh [ mode_index ] >> 7 ) * x -> rd_thresh_mult [ mode_index ] ; continue ; } } x -> mode_test_hit_counts [ mode_index ] ++ ; rate2 = 0 ; distortion2 = 0 ; this_mode = vp8_mode_order [ mode_index ] ; x -> e_mbd . mode_info_context -> mbmi . mode = this_mode ; x -> e_mbd . mode_info_context -> mbmi . uv_mode = DC_PRED ; frame_cost = x -> ref_frame_cost [ x -> e_mbd . mode_info_context -> mbmi . ref_frame ] ; rate2 += frame_cost ; if ( cpi -> is_src_frame_alt_ref && ( cpi -> oxcf . arnr_max_frames == 0 ) ) { if ( this_mode != ZEROMV || x -> e_mbd . mode_info_context -> mbmi . ref_frame != ALTREF_FRAME ) continue ; } switch ( this_mode ) { case B_PRED : distortion2 = best_rd_sse ; pick_intra4x4mby_modes ( x , & rate , & distortion2 ) ; if ( distortion2 == INT_MAX ) { this_rd = INT_MAX ; } else { rate2 += rate ; <S2SV_StartBug> distortion2 = vp8_variance16x16 ( <S2SV_EndBug> * ( b -> base_src ) , b -> src_stride , x -> e_mbd . predictor , 16 , & sse ) ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate2 , distortion2 ) ; if ( this_rd < best_intra_rd ) { best_intra_rd = this_rd ; * returnintra = distortion2 ; } } break ; case SPLITMV : break ; case DC_PRED : case V_PRED : case H_PRED : case TM_PRED : vp8_build_intra_predictors_mby_s ( xd , xd -> dst . y_buffer - xd -> dst . y_stride , xd -> dst . y_buffer - 1 , xd -> dst . y_stride , xd -> predictor , 16 ) ; <S2SV_StartBug> distortion2 = vp8_variance16x16 <S2SV_EndBug> ( * ( b -> base_src ) , b -> src_stride , x -> e_mbd . predictor , 16 , & sse ) ; rate2 += x -> mbmode_cost [ x -> e_mbd . frame_type ] [ x -> e_mbd . mode_info_context -> mbmi . mode ] ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate2 , distortion2 ) ; if ( this_rd < best_intra_rd ) { best_intra_rd = this_rd ; * returnintra = distortion2 ; } break ; case NEWMV : { int thissme ; int step_param ; int further_steps ; int n = 0 ; int sadpb = x -> sadperbit16 ; int_mv mvp_full ; int col_min = ( ( best_ref_mv . as_mv . col + 7 ) >> 3 ) - MAX_FULL_PEL_VAL ; int row_min = ( ( best_ref_mv . as_mv . row + 7 ) >> 3 ) - MAX_FULL_PEL_VAL ; int col_max = ( best_ref_mv . as_mv . col >> 3 ) + MAX_FULL_PEL_VAL ; int row_max = ( best_ref_mv . as_mv . row >> 3 ) + MAX_FULL_PEL_VAL ; int tmp_col_min = x -> mv_col_min ; int tmp_col_max = x -> mv_col_max ; int tmp_row_min = x -> mv_row_min ; int tmp_row_max = x -> mv_row_max ; int speed_adjust = ( cpi -> Speed > 5 ) ? ( ( cpi -> Speed >= 8 ) ? 3 : 2 ) : 1 ; step_param = cpi -> sf . first_step + speed_adjust ; # if CONFIG_MULTI_RES_ENCODING <S2SV_StartBug> if ( cpi -> oxcf . mr_encoder_id && ! parent_ref_valid ) <S2SV_EndBug> sf_improved_mv_pred = 0 ; <S2SV_StartBug> if ( parent_ref_valid && parent_ref_frame ) <S2SV_EndBug> { mvp . as_int = parent_ref_mv . as_int ; mvp_full . as_mv . col = parent_ref_mv . as_mv . col >> 3 ; mvp_full . as_mv . row = parent_ref_mv . as_mv . row >> 3 ; if ( dissim <= 32 ) step_param += 3 ; else if ( dissim <= 128 ) step_param += 2 ; else step_param += 1 ; } else # endif { if ( sf_improved_mv_pred ) { if ( ! saddone ) { vp8_cal_sad ( cpi , xd , x , recon_yoffset , & near_sadidx [ 0 ] ) ; saddone = 1 ; } vp8_mv_pred ( cpi , & x -> e_mbd , x -> e_mbd . mode_info_context , & mvp , x -> e_mbd . mode_info_context -> mbmi . ref_frame , cpi -> common . ref_frame_sign_bias , & sr , & near_sadidx [ 0 ] ) ; sr += speed_adjust ; if ( sr > step_param ) step_param = sr ; mvp_full . as_mv . col = mvp . as_mv . col >> 3 ; mvp_full . as_mv . row = mvp . as_mv . row >> 3 ; } else { mvp . as_int = best_ref_mv . as_int ; mvp_full . as_mv . col = best_ref_mv . as_mv . col >> 3 ; mvp_full . as_mv . row = best_ref_mv . as_mv . row >> 3 ; } } # if CONFIG_MULTI_RES_ENCODING <S2SV_StartBug> if ( parent_ref_valid && parent_ref_frame && dissim <= 2 && <S2SV_EndBug> MAX ( abs ( best_ref_mv . as_mv . row - parent_ref_mv . as_mv . row ) , abs ( best_ref_mv . as_mv . col - parent_ref_mv . as_mv . col ) ) <= 4 ) { d -> bmi . mv . as_int = mvp_full . as_int ; mode_mv [ NEWMV ] . as_int = mvp_full . as_int ; cpi -> find_fractional_mv_step ( x , b , d , & d -> bmi . mv , & best_ref_mv , x -> errorperbit , & cpi -> fn_ptr [ BLOCK_16X16 ] , cpi -> mb . mvcost , & distortion2 , & sse ) ; } else # endif { if ( x -> mv_col_min < col_min ) x -> mv_col_min = col_min ; if ( x -> mv_col_max > col_max ) x -> mv_col_max = col_max ; if ( x -> mv_row_min < row_min ) x -> mv_row_min = row_min ; if ( x -> mv_row_max > row_max ) x -> mv_row_max = row_max ; further_steps = ( cpi -> Speed >= 8 ) ? 0 : ( cpi -> sf . max_step_search_steps - 1 - step_param ) ; if ( cpi -> sf . search_method == HEX ) { # if CONFIG_MULTI_RES_ENCODING <S2SV_StartBug> if ( ! parent_ref_valid ) <S2SV_EndBug> step_param = 0 ; # endif bestsme = vp8_hex_search ( x , b , d , & mvp_full , & d -> bmi . mv , step_param , sadpb , & cpi -> fn_ptr [ BLOCK_16X16 ] , x -> mvsadcost , x -> mvcost , & best_ref_mv ) ; mode_mv [ NEWMV ] . as_int = d -> bmi . mv . as_int ; } else { bestsme = cpi -> diamond_search_sad ( x , b , d , & mvp_full , & d -> bmi . mv , step_param , sadpb , & num00 , & cpi -> fn_ptr [ BLOCK_16X16 ] , x -> mvcost , & best_ref_mv ) ; mode_mv [ NEWMV ] . as_int = d -> bmi . mv . as_int ; n = num00 ; num00 = 0 ; while ( n < further_steps ) { n ++ ; if ( num00 ) num00 -- ; else { thissme = cpi -> diamond_search_sad ( x , b , d , & mvp_full , & d -> bmi . mv , step_param + n , sadpb , & num00 , & cpi -> fn_ptr [ BLOCK_16X16 ] , x -> mvcost , & best_ref_mv ) ; if ( thissme < bestsme ) { bestsme = thissme ; mode_mv [ NEWMV ] . as_int = d -> bmi . mv . as_int ; } else { d -> bmi . mv . as_int = mode_mv [ NEWMV ] . as_int ; } } } } x -> mv_col_min = tmp_col_min ; x -> mv_col_max = tmp_col_max ; x -> mv_row_min = tmp_row_min ; x -> mv_row_max = tmp_row_max ; if ( bestsme < INT_MAX ) cpi -> find_fractional_mv_step ( x , b , d , & d -> bmi . mv , & best_ref_mv , x -> errorperbit , & cpi -> fn_ptr [ BLOCK_16X16 ] , cpi -> mb . mvcost , & distortion2 , & sse ) ; } mode_mv [ NEWMV ] . as_int = d -> bmi . mv . as_int ; <S2SV_StartBug> rate2 += vp8_mv_bit_cost ( & mode_mv [ NEWMV ] , & best_ref_mv , <S2SV_EndBug> cpi -> mb . mvcost , 128 ) ; } case NEARESTMV : case NEARMV : if ( mode_mv [ this_mode ] . as_int == 0 ) continue ; case ZEROMV : if ( ( ( mode_mv [ this_mode ] . as_mv . row >> 3 ) < x -> mv_row_min ) || ( ( mode_mv [ this_mode ] . as_mv . row >> 3 ) > x -> mv_row_max ) || ( ( mode_mv [ this_mode ] . as_mv . col >> 3 ) < x -> mv_col_min ) || ( ( mode_mv [ this_mode ] . as_mv . col >> 3 ) > x -> mv_col_max ) ) continue ; rate2 += vp8_cost_mv_ref ( this_mode , mdcounts ) ; x -> e_mbd . mode_info_context -> mbmi . mv . as_int = mode_mv [ this_mode ] . as_int ; this_rd = evaluate_inter_mode ( & sse , rate2 , & distortion2 , cpi , x , rd_adjustment ) ; break ; default : break ; } # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity ) <S2SV_StartBug> { <S2SV_EndBug> <S2SV_StartBug> if ( this_mode == ZEROMV && sse < zero_mv_sse ) <S2SV_EndBug> { zero_mv_sse = sse ; x -> best_zeromv_reference_frame = x -> e_mbd . mode_info_context -> mbmi . ref_frame ; } if ( x -> e_mbd . mode_info_context -> mbmi . mode == NEWMV && <S2SV_StartBug> sse < best_sse ) <S2SV_EndBug> { best_sse = sse ; x -> best_sse_inter_mode = NEWMV ; x -> best_sse_mv = x -> e_mbd . mode_info_context -> mbmi . mv ; x -> need_to_clamp_best_mvs = x -> e_mbd . mode_info_context -> mbmi . need_to_clamp_mvs ; x -> best_reference_frame = x -> e_mbd . mode_info_context -> mbmi . ref_frame ; } } # endif if ( this_rd < best_rd || x -> skip ) { best_mode_index = mode_index ; * returnrate = rate2 ; * returndistortion = distortion2 ; best_rd_sse = sse ; best_rd = this_rd ; <S2SV_StartBug> vpx_memcpy ( & best_mbmode , & x -> e_mbd . mode_info_context -> mbmi , <S2SV_EndBug> sizeof ( MB_MODE_INFO ) ) ; x -> rd_thresh_mult [ mode_index ] = ( x -> rd_thresh_mult [ mode_index ] >= ( MIN_THRESHMULT + 2 ) ) ? x -> rd_thresh_mult [ mode_index ] - 2 : MIN_THRESHMULT ; x -> rd_threshes [ mode_index ] = ( cpi -> rd_baseline_thresh [ mode_index ] >> 7 ) * x -> rd_thresh_mult [ mode_index ] ; } else { x -> rd_thresh_mult [ mode_index ] += 4 ; if ( x -> rd_thresh_mult [ mode_index ] > MAX_THRESHMULT ) x -> rd_thresh_mult [ mode_index ] = MAX_THRESHMULT ; x -> rd_threshes [ mode_index ] = ( cpi -> rd_baseline_thresh [ mode_index ] >> 7 ) * x -> rd_thresh_mult [ mode_index ] ; } if ( x -> skip ) break ; } if ( ( cpi -> rd_baseline_thresh [ best_mode_index ] > 0 ) && ( cpi -> rd_baseline_thresh [ best_mode_index ] < ( INT_MAX >> 2 ) ) ) { int best_adjustment = ( x -> rd_thresh_mult [ best_mode_index ] >> 3 ) ; x -> rd_thresh_mult [ best_mode_index ] = ( x -> rd_thresh_mult [ best_mode_index ] >= ( MIN_THRESHMULT + best_adjustment ) ) ? x -> rd_thresh_mult [ best_mode_index ] - best_adjustment : MIN_THRESHMULT ; x -> rd_threshes [ best_mode_index ] = ( cpi -> rd_baseline_thresh [ best_mode_index ] >> 7 ) * x -> rd_thresh_mult [ best_mode_index ] ; } { int this_rdbin = ( * returndistortion >> 7 ) ; if ( this_rdbin >= 1024 ) { this_rdbin = 1023 ; } x -> error_bins [ this_rdbin ] ++ ; } # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity ) { <S2SV_StartBug> if ( x -> best_sse_inter_mode == DC_PRED ) <S2SV_EndBug> { x -> best_sse_inter_mode = best_mbmode . mode ; x -> best_sse_mv = best_mbmode . mv ; x -> need_to_clamp_best_mvs = best_mbmode . need_to_clamp_mvs ; x -> best_reference_frame = best_mbmode . ref_frame ; best_sse = best_rd_sse ; } <S2SV_StartBug> vp8_denoiser_denoise_mb ( & cpi -> denoiser , x , best_sse , zero_mv_sse , <S2SV_EndBug> <S2SV_StartBug> recon_yoffset , recon_uvoffset ) ; <S2SV_EndBug> <S2SV_StartBug> if ( best_mbmode . ref_frame == INTRA_FRAME && <S2SV_EndBug> x -> best_zeromv_reference_frame != INTRA_FRAME ) { int this_rd = 0 ; int this_ref_frame = x -> best_zeromv_reference_frame ; <S2SV_StartBug> rate2 = x -> ref_frame_cost [ this_ref_frame ] + <S2SV_EndBug> vp8_cost_mv_ref ( ZEROMV , mdcounts ) ; distortion2 = 0 ; x -> e_mbd . mode_info_context -> mbmi . ref_frame = this_ref_frame ; x -> e_mbd . pre . y_buffer = plane [ this_ref_frame ] [ 0 ] ; x -> e_mbd . pre . u_buffer = plane [ this_ref_frame ] [ 1 ] ; x -> e_mbd . pre . v_buffer = plane [ this_ref_frame ] [ 2 ] ; x -> e_mbd . mode_info_context -> mbmi . mode = ZEROMV ; x -> e_mbd . mode_info_context -> mbmi . uv_mode = DC_PRED ; x -> e_mbd . mode_info_context -> mbmi . mv . as_int = 0 ; this_rd = evaluate_inter_mode ( & sse , rate2 , & distortion2 , cpi , x , rd_adjustment ) ; if ( this_rd < best_rd ) { <S2SV_StartBug> vpx_memcpy ( & best_mbmode , & x -> e_mbd . mode_info_context -> mbmi , <S2SV_EndBug> sizeof ( MB_MODE_INFO ) ) ; } } } # endif if ( cpi -> is_src_frame_alt_ref && ( best_mbmode . mode != ZEROMV || best_mbmode . ref_frame != ALTREF_FRAME ) ) { x -> e_mbd . mode_info_context -> mbmi . mode = ZEROMV ; x -> e_mbd . mode_info_context -> mbmi . ref_frame = ALTREF_FRAME ; x -> e_mbd . mode_info_context -> mbmi . mv . as_int = 0 ; x -> e_mbd . mode_info_context -> mbmi . uv_mode = DC_PRED ; x -> e_mbd . mode_info_context -> mbmi . mb_skip_coeff = ( cpi -> common . mb_no_coeff_skip ) ; x -> e_mbd . mode_info_context -> mbmi . partitioning = 0 ; return ; } if ( ! x -> skip ) <S2SV_StartBug> vpx_memcpy ( & x -> e_mbd . mode_info_context -> mbmi , & best_mbmode , <S2SV_EndBug> sizeof ( MB_MODE_INFO ) ) ; if ( best_mbmode . mode <= B_PRED ) { pick_intra_mbuv_mode ( x ) ; } if ( sign_bias != cpi -> common . ref_frame_sign_bias [ xd -> mode_info_context -> mbmi . ref_frame ] ) best_ref_mv . as_int = best_ref_mv_sb [ ! sign_bias ] . as_int ; update_mvcount ( x , & best_ref_mv ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int sse = UINT_MAX <S2SV_ModEnd> , best_rd_sse = <S2SV_ModStart> , best_rd_sse = UINT_MAX <S2SV_ModEnd> ; # if <S2SV_ModStart> int zero_mv_sse = UINT_MAX <S2SV_ModEnd> , best_sse = <S2SV_ModStart> , best_sse = UINT_MAX <S2SV_ModEnd> ; # endif <S2SV_ModStart> . improved_mv_pred ; # if CONFIG_MULTI_RES_ENCODING int dissim = INT_MAX ; int parent_ref_frame = 0 ; int_mv parent_ref_mv ; MB_PREDICTION_MODE parent_mode = 0 ; int parent_ref_valid = 0 ; # endif <S2SV_ModStart> = 0 ; int dot_artifact_candidate = 0 ; get_predictor_pointers ( cpi , plane , recon_yoffset , recon_uvoffset ) ; if ( cpi -> ref_frame_flags & VP8_LAST_FRAME ) { unsigned char * target_y = x -> src . y_buffer ; unsigned char * target_u = x -> block [ 16 ] . src + * x -> block [ 16 ] . base_src ; unsigned char * target_v = x -> block [ 20 ] . src + * x -> block [ 20 ] . base_src ; int stride = x -> src . y_stride ; int stride_uv = x -> block [ 16 ] . src_stride ; # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity ) { const int uv_denoise = ( cpi -> oxcf . noise_sensitivity >= 2 ) ? 1 : 0 ; target_y = cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] . y_buffer + recon_yoffset ; stride = cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] . y_stride ; if ( uv_denoise ) { target_u = cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] . u_buffer + recon_uvoffset ; target_v = cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] . v_buffer + recon_uvoffset ; stride_uv = cpi -> denoiser . yv12_running_avg [ LAST_FRAME ] . uv_stride ; } } # endif dot_artifact_candidate = check_dot_artifact_candidate ( cpi , x , target_y , stride , plane [ LAST_FRAME ] [ 0 ] , mb_row , mb_col , 0 ) ; if ( ! dot_artifact_candidate ) { dot_artifact_candidate = check_dot_artifact_candidate ( cpi , x , target_u , stride_uv , plane [ LAST_FRAME ] [ 1 ] , mb_row , mb_col , 1 ) ; if ( ! dot_artifact_candidate ) { dot_artifact_candidate = check_dot_artifact_candidate ( cpi , x , target_v , stride_uv , plane [ LAST_FRAME ] [ 2 ] , mb_row , mb_col , 2 ) ; } } } # if CONFIG_MULTI_RES_ENCODING <S2SV_ModEnd> parent_ref_valid = cpi <S2SV_ModStart> cpi -> mr_low_res_mv_avail <S2SV_ModEnd> ; if ( <S2SV_ModStart> ref_frame_flags & VP8_GOLD_FRAME <S2SV_ModEnd> ) ; if <S2SV_ModStart> = 0 ; if ( dot_artifact_candidate ) parent_ref_valid = 0 ; <S2SV_ModStart> } # endif { const int y = x -> src . y_buffer [ 7 * x -> src . y_stride + 7 ] ; const int cb = x -> src . u_buffer [ 3 * x -> src . uv_stride + 3 ] ; const int cr = x -> src . v_buffer [ 3 * x -> src . uv_stride + 3 ] ; x -> is_skin = 0 ; if ( ! cpi -> oxcf . screen_content_mode ) x -> is_skin = is_skin_color ( y , cb , cr ) ; } # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity ) { } # endif <S2SV_ModStart> = 0 ; memset <S2SV_ModEnd> ( mode_mv_sb , <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( & best_mbmode <S2SV_ModStart> as_int ; } <S2SV_ModEnd> x -> mbs_tested_so_far <S2SV_ModStart> = INTRA_FRAME ; if ( cpi -> Speed < 12 ) { <S2SV_ModStart> rd_adjustment ) ; } # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity ) { rd_adjustment = ( int ) ( rd_adjustment * cpi -> denoiser . denoise_pars . pickmode_mv_bias / 100 ) ; } # endif if ( dot_artifact_candidate ) { rd_adjustment = 150 ; } <S2SV_ModStart> ; distortion2 = vpx_variance16x16 <S2SV_ModEnd> ( * ( <S2SV_ModStart> ; distortion2 = vpx_variance16x16 <S2SV_ModEnd> ( * ( <S2SV_ModStart> oxcf . mr_encoder_id <S2SV_ModEnd> ) sf_improved_mv_pred = <S2SV_ModStart> ( parent_ref_valid && ( parent_ref_frame == this_ref_frame ) <S2SV_ModEnd> ) { mvp <S2SV_ModStart> ( parent_ref_valid && ( parent_ref_frame == this_ref_frame ) <S2SV_ModEnd> && dissim <= <S2SV_ModStart> ( ! parent_ref_valid || ( parent_ref_frame != this_ref_frame ) <S2SV_ModStart> . as_int ; vp8_clamp_mv2 ( & mode_mv [ this_mode ] , xd ) ; <S2SV_ModStart> noise_sensitivity ) { int skip_old_reference = ( ( this_ref_frame != LAST_FRAME ) && ( cpi -> common . current_video_frame - cpi -> current_ref_frames [ this_ref_frame ] > MAX_GF_ARF_DENOISE_RANGE ) ) ? 1 : 0 ; <S2SV_ModStart> sse < zero_mv_sse && ! skip_old_reference <S2SV_ModStart> sse < best_sse && ! skip_old_reference <S2SV_ModStart> = this_rd ; memcpy <S2SV_ModEnd> ( & best_mbmode <S2SV_ModStart> noise_sensitivity ) { int block_index = mb_row * cpi -> common . mb_cols + mb_col ; int reevaluate = 0 ; int is_noisy = 0 ; <S2SV_ModStart> best_rd_sse ; } if ( cpi -> oxcf . noise_sensitivity == 4 ) { if ( cpi -> denoiser . nmse_source_diff > 70 * cpi -> denoiser . threshold_aggressive_mode / 100 ) is_noisy = 1 ; } else { if ( cpi -> mse_source_denoised > 1000 ) is_noisy = 1 ; } x -> increase_denoising = 0 ; if ( ! x -> is_skin && x -> best_sse_inter_mode == ZEROMV && ( x -> best_reference_frame == LAST_FRAME || x -> best_reference_frame == cpi -> closest_reference_frame ) && cpi -> consec_zero_last [ block_index ] >= 20 && is_noisy ) { x -> increase_denoising = 1 ; } x -> denoise_zeromv = 0 ; <S2SV_ModStart> recon_yoffset , recon_uvoffset , & cpi -> common . lf_info , mb_row , mb_col , block_index ) ; reevaluate = <S2SV_ModEnd> ( best_mbmode . <S2SV_ModStart> ref_frame == INTRA_FRAME ) || ( best_mbmode . mode != ZEROMV && x -> denoise_zeromv && cpi -> mse_source_denoised > 2000 ) ; if ( ! dot_artifact_candidate && reevaluate <S2SV_ModStart> -> best_zeromv_reference_frame ; rd_adjustment = 100 ; <S2SV_ModStart> best_rd ) { memcpy <S2SV_ModEnd> ( & best_mbmode <S2SV_ModStart> -> skip ) memcpy <S2SV_ModEnd> ( & x\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7191\n\n```\nCWE-476 static int tun_set_iff ( struct net * net , struct file * file , struct ifreq * ifr ) { struct tun_struct * tun ; struct tun_file * tfile = file -> private_data ; struct net_device * dev ; int err ; if ( tfile -> detached ) return - EINVAL ; dev = __dev_get_by_name ( net , ifr -> ifr_name ) ; if ( dev ) { if ( ifr -> ifr_flags & IFF_TUN_EXCL ) return - EBUSY ; if ( ( ifr -> ifr_flags & IFF_TUN ) && dev -> netdev_ops == & tun_netdev_ops ) tun = netdev_priv ( dev ) ; else if ( ( ifr -> ifr_flags & IFF_TAP ) && dev -> netdev_ops == & tap_netdev_ops ) tun = netdev_priv ( dev ) ; else return - EINVAL ; if ( ! ! ( ifr -> ifr_flags & IFF_MULTI_QUEUE ) != ! ! ( tun -> flags & IFF_MULTI_QUEUE ) ) return - EINVAL ; if ( tun_not_capable ( tun ) ) return - EPERM ; err = security_tun_dev_open ( tun -> security ) ; if ( err < 0 ) return err ; err = tun_attach ( tun , file , ifr -> ifr_flags & IFF_NOFILTER ) ; if ( err < 0 ) return err ; if ( tun -> flags & IFF_MULTI_QUEUE && ( tun -> numqueues + tun -> numdisabled > 1 ) ) { return 0 ; } } else { char * name ; unsigned long flags = 0 ; int queues = ifr -> ifr_flags & IFF_MULTI_QUEUE ? MAX_TAP_QUEUES : 1 ; if ( ! ns_capable ( net -> user_ns , CAP_NET_ADMIN ) ) return - EPERM ; err = security_tun_dev_create ( ) ; if ( err < 0 ) return err ; if ( ifr -> ifr_flags & IFF_TUN ) { flags |= IFF_TUN ; name = \"tun%d\" ; } else if ( ifr -> ifr_flags & IFF_TAP ) { flags |= IFF_TAP ; name = \"tap%d\" ; } else return - EINVAL ; if ( * ifr -> ifr_name ) name = ifr -> ifr_name ; dev = alloc_netdev_mqs ( sizeof ( struct tun_struct ) , name , NET_NAME_UNKNOWN , tun_setup , queues , queues ) ; if ( ! dev ) return - ENOMEM ; err = dev_get_valid_name ( net , dev , name ) ; <S2SV_StartBug> if ( err ) <S2SV_EndBug> goto err_free_dev ; dev_net_set ( dev , net ) ; dev -> rtnl_link_ops = & tun_link_ops ; dev -> ifindex = tfile -> ifindex ; dev -> sysfs_groups [ 0 ] = & tun_attr_group ; tun = netdev_priv ( dev ) ; tun -> dev = dev ; tun -> flags = flags ; tun -> txflt . count = 0 ; tun -> vnet_hdr_sz = sizeof ( struct virtio_net_hdr ) ; tun -> align = NET_SKB_PAD ; tun -> filter_attached = false ; tun -> sndbuf = tfile -> socket . sk -> sk_sndbuf ; tun -> rx_batched = 0 ; tun -> pcpu_stats = netdev_alloc_pcpu_stats ( struct tun_pcpu_stats ) ; if ( ! tun -> pcpu_stats ) { err = - ENOMEM ; goto err_free_dev ; } spin_lock_init ( & tun -> lock ) ; err = security_tun_dev_alloc_security ( & tun -> security ) ; if ( err < 0 ) goto err_free_stat ; tun_net_init ( dev ) ; tun_flow_init ( tun ) ; dev -> hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | TUN_USER_FEATURES | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX ; dev -> features = dev -> hw_features | NETIF_F_LLTX ; dev -> vlan_features = dev -> features & ~ ( NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX ) ; INIT_LIST_HEAD ( & tun -> disabled ) ; err = tun_attach ( tun , file , false ) ; if ( err < 0 ) goto err_free_flow ; err = register_netdevice ( tun -> dev ) ; if ( err < 0 ) goto err_detach ; } netif_carrier_on ( tun -> dev ) ; tun_debug ( KERN_INFO , tun , \"tun_set_iff\\\\n\" ) ; tun -> flags = ( tun -> flags & ~ TUN_FEATURES ) | ( ifr -> ifr_flags & TUN_FEATURES ) ; if ( netif_running ( tun -> dev ) ) netif_tx_wake_all_queues ( tun -> dev ) ; strcpy ( ifr -> ifr_name , tun -> dev -> name ) ; return 0 ; err_detach : tun_detach_all ( dev ) ; goto err_free_dev ; err_free_flow : tun_flow_uninit ( tun ) ; security_tun_dev_free_security ( tun -> security ) ; err_free_stat : free_percpu ( tun -> pcpu_stats ) ; err_free_dev : free_netdev ( dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( err < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4604\n\n```\nCWE-119 static ssize_t bat_socket_read ( struct file * file , char __user * buf , size_t count , loff_t * ppos ) { struct socket_client * socket_client = file -> private_data ; struct socket_packet * socket_packet ; size_t packet_len ; int error ; if ( ( file -> f_flags & O_NONBLOCK ) && ( socket_client -> queue_len == 0 ) ) return - EAGAIN ; if ( ( ! buf ) || ( count < sizeof ( struct icmp_packet ) ) ) return - EINVAL ; if ( ! access_ok ( VERIFY_WRITE , buf , count ) ) return - EFAULT ; error = wait_event_interruptible ( socket_client -> queue_wait , socket_client -> queue_len ) ; if ( error ) return error ; spin_lock_bh ( & socket_client -> lock ) ; socket_packet = list_first_entry ( & socket_client -> queue_list , struct socket_packet , list ) ; list_del ( & socket_packet -> list ) ; socket_client -> queue_len -- ; spin_unlock_bh ( & socket_client -> lock ) ; <S2SV_StartBug> error = copy_to_user ( buf , & socket_packet -> icmp_packet , <S2SV_EndBug> <S2SV_StartBug> socket_packet -> icmp_len ) ; <S2SV_EndBug> packet_len = socket_packet -> icmp_len ; kfree ( socket_packet ) ; if ( error ) return - EFAULT ; return packet_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lock ) ; packet_len = min ( count , socket_packet -> icmp_len ) ; <S2SV_ModStart> -> icmp_packet , packet_len ) <S2SV_ModEnd> ; kfree (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static struct page * follow_page_pte ( struct vm_area_struct * vma , unsigned long address , pmd_t * pmd , unsigned int flags , struct dev_pagemap * * pgmap ) { struct mm_struct * mm = vma -> vm_mm ; struct page * page ; spinlock_t * ptl ; pte_t * ptep , pte ; retry : if ( unlikely ( pmd_bad ( * pmd ) ) ) return no_page_table ( vma , flags ) ; ptep = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; pte = * ptep ; if ( ! pte_present ( pte ) ) { swp_entry_t entry ; if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) goto no_page ; if ( pte_none ( pte ) ) goto no_page ; entry = pte_to_swp_entry ( pte ) ; if ( ! is_migration_entry ( entry ) ) goto no_page ; pte_unmap_unlock ( ptep , ptl ) ; migration_entry_wait ( mm , pmd , address ) ; goto retry ; } if ( ( flags & FOLL_NUMA ) && pte_protnone ( pte ) ) goto no_page ; if ( ( flags & FOLL_WRITE ) && ! can_follow_write_pte ( pte , flags ) ) { pte_unmap_unlock ( ptep , ptl ) ; return NULL ; } page = vm_normal_page ( vma , address , pte ) ; if ( ! page && pte_devmap ( pte ) && ( flags & FOLL_GET ) ) { * pgmap = get_dev_pagemap ( pte_pfn ( pte ) , * pgmap ) ; if ( * pgmap ) page = pte_page ( pte ) ; else goto no_page ; } else if ( unlikely ( ! page ) ) { if ( flags & FOLL_DUMP ) { page = ERR_PTR ( - EFAULT ) ; goto out ; } if ( is_zero_pfn ( pte_pfn ( pte ) ) ) { page = pte_page ( pte ) ; } else { int ret ; ret = follow_pfn_pte ( vma , address , ptep , flags ) ; page = ERR_PTR ( ret ) ; goto out ; } } if ( flags & FOLL_SPLIT && PageTransCompound ( page ) ) { int ret ; get_page ( page ) ; pte_unmap_unlock ( ptep , ptl ) ; lock_page ( page ) ; ret = split_huge_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; if ( ret ) return ERR_PTR ( ret ) ; goto retry ; } if ( flags & FOLL_GET ) <S2SV_StartBug> get_page ( page ) ; <S2SV_EndBug> if ( flags & FOLL_TOUCH ) { if ( ( flags & FOLL_WRITE ) && ! pte_dirty ( pte ) && ! PageDirty ( page ) ) set_page_dirty ( page ) ; mark_page_accessed ( page ) ; } if ( ( flags & FOLL_MLOCK ) && ( vma -> vm_flags & VM_LOCKED ) ) { if ( PageTransCompound ( page ) ) goto out ; if ( page -> mapping && trylock_page ( page ) ) { lru_add_drain ( ) ; mlock_vma_page ( page ) ; unlock_page ( page ) ; } } out : pte_unmap_unlock ( ptep , ptl ) ; return page ; no_page : pte_unmap_unlock ( ptep , ptl ) ; if ( ! pte_none ( pte ) ) return NULL ; return no_page_table ( vma , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & FOLL_GET ) { if ( unlikely ( ! try_get_page ( page ) ) ) { page = ERR_PTR ( - ENOMEM ) ; goto out ; } } <S2SV_ModEnd> if ( flags\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rc_compute_frame_size_bounds ( const VP9_COMP * cpi , <S2SV_StartBug> int this_frame_target , <S2SV_EndBug> int * frame_under_shoot_limit , int * frame_over_shoot_limit ) { <S2SV_StartBug> if ( cpi -> oxcf . end_usage == USAGE_CONSTANT_QUALITY ) { <S2SV_EndBug> * frame_under_shoot_limit = 0 ; * frame_over_shoot_limit = INT_MAX ; } else { <S2SV_StartBug> int recode_tolerance = <S2SV_EndBug> <S2SV_StartBug> ( cpi -> sf . recode_tolerance * this_frame_target ) / 100 ; <S2SV_EndBug> <S2SV_StartBug> * frame_over_shoot_limit = this_frame_target + recode_tolerance ; <S2SV_EndBug> * frame_under_shoot_limit = this_frame_target - recode_tolerance ; <S2SV_StartBug> * frame_over_shoot_limit += 200 ; <S2SV_EndBug> * frame_under_shoot_limit -= 200 ; if ( * frame_under_shoot_limit < 0 ) * frame_under_shoot_limit = 0 ; <S2SV_StartBug> if ( * frame_over_shoot_limit > cpi -> rc . max_frame_bandwidth ) { <S2SV_EndBug> * frame_over_shoot_limit = cpi -> rc . max_frame_bandwidth ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi , int frame_target <S2SV_ModEnd> , int * <S2SV_ModStart> -> oxcf . rc_mode == VPX_Q <S2SV_ModEnd> ) { * <S2SV_ModStart> } else { const int tolerance <S2SV_ModEnd> = ( cpi <S2SV_ModStart> . recode_tolerance * frame_target <S2SV_ModEnd> ) / 100 <S2SV_ModStart> 100 ; * frame_under_shoot_limit = MAX ( frame_target - tolerance - 200 , 0 ) <S2SV_ModEnd> ; * frame_over_shoot_limit <S2SV_ModStart> ; * frame_over_shoot_limit = MIN ( frame_target + tolerance + 200 , <S2SV_ModEnd> cpi -> rc <S2SV_ModStart> . max_frame_bandwidth ) <S2SV_ModEnd> ; } } <S2SV_ModStart> ; } } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-672(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19480\n\n```\nCWE-672 int sc_pkcs15_decode_prkdf_entry ( struct sc_pkcs15_card * p15card , struct sc_pkcs15_object * obj , const u8 * * buf , size_t * buflen ) { sc_context_t * ctx = p15card -> card -> ctx ; struct sc_pkcs15_prkey_info info ; int r , i , gostr3410_params [ 3 ] ; struct sc_pkcs15_keyinfo_gostparams * keyinfo_gostparams ; size_t usage_len = sizeof ( info . usage ) ; size_t af_len = sizeof ( info . access_flags ) ; struct sc_asn1_entry asn1_com_key_attr [ C_ASN1_COM_KEY_ATTR_SIZE ] ; struct sc_asn1_entry asn1_com_prkey_attr [ C_ASN1_COM_PRKEY_ATTR_SIZE ] ; struct sc_asn1_entry asn1_rsakey_attr [ C_ASN1_RSAKEY_ATTR_SIZE ] ; struct sc_asn1_entry asn1_prk_rsa_attr [ C_ASN1_PRK_RSA_ATTR_SIZE ] ; struct sc_asn1_entry asn1_dsakey_attr [ C_ASN1_DSAKEY_ATTR_SIZE ] ; struct sc_asn1_entry asn1_prk_dsa_attr [ C_ASN1_PRK_DSA_ATTR_SIZE ] ; struct sc_asn1_entry asn1_dsakey_i_p_attr [ C_ASN1_DSAKEY_I_P_ATTR_SIZE ] ; struct sc_asn1_entry asn1_dsakey_value_attr [ C_ASN1_DSAKEY_VALUE_ATTR_SIZE ] ; struct sc_asn1_entry asn1_gostr3410key_attr [ C_ASN1_GOSTR3410KEY_ATTR_SIZE ] ; struct sc_asn1_entry asn1_prk_gostr3410_attr [ C_ASN1_PRK_GOSTR3410_ATTR_SIZE ] ; struct sc_asn1_entry asn1_ecckey_attr [ C_ASN1_ECCKEY_ATTR ] ; struct sc_asn1_entry asn1_prk_ecc_attr [ C_ASN1_PRK_ECC_ATTR ] ; struct sc_asn1_entry asn1_prkey [ C_ASN1_PRKEY_SIZE ] ; struct sc_asn1_entry asn1_supported_algorithms [ C_ASN1_SUPPORTED_ALGORITHMS_SIZE ] ; struct sc_asn1_pkcs15_object rsa_prkey_obj = { obj , asn1_com_key_attr , asn1_com_prkey_attr , asn1_prk_rsa_attr } ; struct sc_asn1_pkcs15_object dsa_prkey_obj = { obj , asn1_com_key_attr , asn1_com_prkey_attr , asn1_prk_dsa_attr } ; struct sc_asn1_pkcs15_object gostr3410_prkey_obj = { obj , asn1_com_key_attr , asn1_com_prkey_attr , asn1_prk_gostr3410_attr } ; struct sc_asn1_pkcs15_object ecc_prkey_obj = { obj , asn1_com_key_attr , asn1_com_prkey_attr , asn1_prk_ecc_attr } ; sc_copy_asn1_entry ( c_asn1_prkey , asn1_prkey ) ; sc_copy_asn1_entry ( c_asn1_supported_algorithms , asn1_supported_algorithms ) ; sc_copy_asn1_entry ( c_asn1_prk_rsa_attr , asn1_prk_rsa_attr ) ; sc_copy_asn1_entry ( c_asn1_rsakey_attr , asn1_rsakey_attr ) ; sc_copy_asn1_entry ( c_asn1_prk_dsa_attr , asn1_prk_dsa_attr ) ; sc_copy_asn1_entry ( c_asn1_dsakey_attr , asn1_dsakey_attr ) ; sc_copy_asn1_entry ( c_asn1_dsakey_value_attr , asn1_dsakey_value_attr ) ; sc_copy_asn1_entry ( c_asn1_dsakey_i_p_attr , asn1_dsakey_i_p_attr ) ; sc_copy_asn1_entry ( c_asn1_prk_gostr3410_attr , asn1_prk_gostr3410_attr ) ; sc_copy_asn1_entry ( c_asn1_gostr3410key_attr , asn1_gostr3410key_attr ) ; sc_copy_asn1_entry ( c_asn1_prk_ecc_attr , asn1_prk_ecc_attr ) ; sc_copy_asn1_entry ( c_asn1_ecckey_attr , asn1_ecckey_attr ) ; sc_copy_asn1_entry ( c_asn1_com_prkey_attr , asn1_com_prkey_attr ) ; sc_copy_asn1_entry ( c_asn1_com_key_attr , asn1_com_key_attr ) ; sc_format_asn1_entry ( asn1_prkey + 0 , & rsa_prkey_obj , NULL , 0 ) ; sc_format_asn1_entry ( asn1_prkey + 1 , & ecc_prkey_obj , NULL , 0 ) ; sc_format_asn1_entry ( asn1_prkey + 2 , & dsa_prkey_obj , NULL , 0 ) ; sc_format_asn1_entry ( asn1_prkey + 3 , & gostr3410_prkey_obj , NULL , 0 ) ; sc_format_asn1_entry ( asn1_prk_rsa_attr + 0 , asn1_rsakey_attr , NULL , 0 ) ; sc_format_asn1_entry ( asn1_prk_dsa_attr + 0 , asn1_dsakey_attr , NULL , 0 ) ; sc_format_asn1_entry ( asn1_prk_gostr3410_attr + 0 , asn1_gostr3410key_attr , NULL , 0 ) ; sc_format_asn1_entry ( asn1_prk_ecc_attr + 0 , asn1_ecckey_attr , NULL , 0 ) ; sc_format_asn1_entry ( asn1_rsakey_attr + 0 , & info . path , NULL , 0 ) ; sc_format_asn1_entry ( asn1_rsakey_attr + 1 , & info . modulus_length , NULL , 0 ) ; sc_format_asn1_entry ( asn1_dsakey_attr + 0 , asn1_dsakey_value_attr , NULL , 0 ) ; sc_format_asn1_entry ( asn1_dsakey_value_attr + 0 , & info . path , NULL , 0 ) ; sc_format_asn1_entry ( asn1_dsakey_value_attr + 1 , asn1_dsakey_i_p_attr , NULL , 0 ) ; sc_format_asn1_entry ( asn1_dsakey_i_p_attr + 0 , & info . path , NULL , 0 ) ; sc_format_asn1_entry ( asn1_gostr3410key_attr + 0 , & info . path , NULL , 0 ) ; sc_format_asn1_entry ( asn1_gostr3410key_attr + 1 , & gostr3410_params [ 0 ] , NULL , 0 ) ; sc_format_asn1_entry ( asn1_gostr3410key_attr + 2 , & gostr3410_params [ 1 ] , NULL , 0 ) ; sc_format_asn1_entry ( asn1_gostr3410key_attr + 3 , & gostr3410_params [ 2 ] , NULL , 0 ) ; sc_format_asn1_entry ( asn1_ecckey_attr + 0 , & info . path , NULL , 0 ) ; sc_format_asn1_entry ( asn1_ecckey_attr + 1 , & info . field_length , NULL , 0 ) ; sc_format_asn1_entry ( asn1_com_key_attr + 0 , & info . id , NULL , 0 ) ; sc_format_asn1_entry ( asn1_com_key_attr + 1 , & info . usage , & usage_len , 0 ) ; sc_format_asn1_entry ( asn1_com_key_attr + 2 , & info . native , NULL , 0 ) ; sc_format_asn1_entry ( asn1_com_key_attr + 3 , & info . access_flags , & af_len , 0 ) ; sc_format_asn1_entry ( asn1_com_key_attr + 4 , & info . key_reference , NULL , 0 ) ; for ( i = 0 ; i < SC_MAX_SUPPORTED_ALGORITHMS && ( asn1_supported_algorithms + i ) -> name ; i ++ ) sc_format_asn1_entry ( asn1_supported_algorithms + i , & info . algo_refs [ i ] , NULL , 0 ) ; sc_format_asn1_entry ( asn1_com_key_attr + 5 , asn1_supported_algorithms , NULL , 0 ) ; sc_format_asn1_entry ( asn1_com_prkey_attr + 0 , & info . subject . value , & info . subject . len , 0 ) ; memset ( & info , 0 , sizeof ( info ) ) ; info . key_reference = - 1 ; info . native = 1 ; memset ( gostr3410_params , 0 , sizeof ( gostr3410_params ) ) ; r = sc_asn1_decode_choice ( ctx , asn1_prkey , * buf , * buflen , buf , buflen ) ; if ( r < 0 ) { <S2SV_StartBug> if ( asn1_com_prkey_attr -> flags & SC_ASN1_PRESENT && <S2SV_EndBug> asn1_com_prkey_attr [ 0 ] . flags & SC_ASN1_PRESENT ) { free ( asn1_com_prkey_attr [ 0 ] . parm ) ; } } if ( r == SC_ERROR_ASN1_END_OF_CONTENTS ) return r ; LOG_TEST_RET ( ctx , r , \"PrKey<S2SV_blank>DF<S2SV_blank>ASN.1<S2SV_blank>decoding<S2SV_blank>failed\" ) ; if ( asn1_prkey [ 0 ] . flags & SC_ASN1_PRESENT ) { obj -> type = SC_PKCS15_TYPE_PRKEY_RSA ; } else if ( asn1_prkey [ 1 ] . flags & SC_ASN1_PRESENT ) { obj -> type = SC_PKCS15_TYPE_PRKEY_EC ; } else if ( asn1_prkey [ 2 ] . flags & SC_ASN1_PRESENT ) { obj -> type = SC_PKCS15_TYPE_PRKEY_DSA ; if ( asn1_dsakey_i_p_attr [ 0 ] . flags & SC_ASN1_PRESENT ) info . path . type = SC_PATH_TYPE_PATH_PROT ; } else if ( asn1_prkey [ 3 ] . flags & SC_ASN1_PRESENT ) { obj -> type = SC_PKCS15_TYPE_PRKEY_GOSTR3410 ; assert ( info . modulus_length == 0 ) ; info . modulus_length = SC_PKCS15_GOSTR3410_KEYSIZE ; assert ( info . params . len == 0 ) ; info . params . len = sizeof ( struct sc_pkcs15_keyinfo_gostparams ) ; info . params . data = malloc ( info . params . len ) ; if ( info . params . data == NULL ) LOG_FUNC_RETURN ( ctx , SC_ERROR_OUT_OF_MEMORY ) ; assert ( sizeof ( * keyinfo_gostparams ) == info . params . len ) ; keyinfo_gostparams = info . params . data ; keyinfo_gostparams -> gostr3410 = gostr3410_params [ 0 ] ; keyinfo_gostparams -> gostr3411 = gostr3410_params [ 1 ] ; keyinfo_gostparams -> gost28147 = gostr3410_params [ 2 ] ; } else { sc_log ( ctx , \"Neither<S2SV_blank>RSA<S2SV_blank>or<S2SV_blank>DSA<S2SV_blank>or<S2SV_blank>GOSTR3410<S2SV_blank>or<S2SV_blank>ECC<S2SV_blank>key<S2SV_blank>in<S2SV_blank>PrKDF<S2SV_blank>entry.\" ) ; LOG_FUNC_RETURN ( ctx , SC_ERROR_INVALID_ASN1_OBJECT ) ; } if ( ! p15card -> app || ! p15card -> app -> ddo . aid . len ) { r = sc_pkcs15_make_absolute_path ( & p15card -> file_app -> path , & info . path ) ; if ( r < 0 ) { sc_pkcs15_free_key_params ( & info . params ) ; return r ; } } else { info . path . aid = p15card -> app -> ddo . aid ; } sc_log ( ctx , \"PrivKey<S2SV_blank>path<S2SV_blank>\\'%s\\'\" , sc_print_path ( & info . path ) ) ; if ( info . key_reference < - 1 ) info . key_reference += 256 ; if ( ( obj -> flags & SC_PKCS15_CO_FLAG_PRIVATE ) && ( obj -> auth_id . len == 0 ) ) { sc_log ( ctx , \"Private<S2SV_blank>key<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>no<S2SV_blank>auth<S2SV_blank>ID<S2SV_blank>-<S2SV_blank>checking<S2SV_blank>AccessControlRules\" , sc_pkcs15_print_id ( & info . id ) ) ; for ( i = 0 ; i < SC_PKCS15_MAX_ACCESS_RULES ; i ++ ) { if ( obj -> access_rules [ i ] . access_mode & ( SC_PKCS15_ACCESS_RULE_MODE_EXECUTE | SC_PKCS15_ACCESS_RULE_MODE_PSO_CDS | SC_PKCS15_ACCESS_RULE_MODE_PSO_DECRYPT | SC_PKCS15_ACCESS_RULE_MODE_INT_AUTH ) ) { if ( obj -> access_rules [ i ] . auth_id . len != 0 ) { obj -> auth_id = obj -> access_rules [ i ] . auth_id ; sc_log ( ctx , \"Auth<S2SV_blank>ID<S2SV_blank>found<S2SV_blank>-<S2SV_blank>%s\" , sc_pkcs15_print_id ( & obj -> auth_id ) ) ; break ; } } } if ( i == SC_PKCS15_MAX_ACCESS_RULES ) sc_log ( ctx , \"Warning:<S2SV_blank>No<S2SV_blank>auth<S2SV_blank>ID<S2SV_blank>found\" ) ; } obj -> data = malloc ( sizeof ( info ) ) ; if ( obj -> data == NULL ) { sc_pkcs15_free_key_params ( & info . params ) ; LOG_FUNC_RETURN ( ctx , SC_ERROR_OUT_OF_MEMORY ) ; } memcpy ( obj -> data , & info , sizeof ( info ) ) ; sc_log ( ctx , \"Key<S2SV_blank>Subject<S2SV_blank>%s\" , sc_dump_hex ( info . subject . value , info . subject . len ) ) ; sc_log ( ctx , \"Key<S2SV_blank>path<S2SV_blank>%s\" , sc_print_path ( & info . path ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { free ( info . subject . value ) ; <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7184\n\n```\nCWE-000 static inline int xfrm_replay_verify_len ( struct xfrm_replay_state_esn * replay_esn , struct nlattr * rp ) { struct xfrm_replay_state_esn * up ; int ulen ; if ( ! replay_esn || ! rp ) return 0 ; up = nla_data ( rp ) ; ulen = xfrm_replay_state_esn_len ( up ) ; if ( nla_len ( rp ) < ulen || xfrm_replay_state_esn_len ( replay_esn ) != ulen ) return - EINVAL ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EINVAL ; if ( up -> replay_window > up -> bmp_len * sizeof ( __u32 ) * 8 ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4656\n\n```\nCWE-189 int snd_ctl_add ( struct snd_card * card , struct snd_kcontrol * kcontrol ) { struct snd_ctl_elem_id id ; unsigned int idx ; unsigned int count ; int err = - EINVAL ; if ( ! kcontrol ) return err ; if ( snd_BUG_ON ( ! card || ! kcontrol -> info ) ) goto error ; id = kcontrol -> id ; <S2SV_StartBug> down_write ( & card -> controls_rwsem ) ; <S2SV_EndBug> if ( snd_ctl_find_id ( card , & id ) ) { up_write ( & card -> controls_rwsem ) ; dev_err ( card -> dev , \"control<S2SV_blank>%i:%i:%i:%s:%i<S2SV_blank>is<S2SV_blank>already<S2SV_blank>present\\\\n\" , id . iface , id . device , id . subdevice , id . name , id . index ) ; err = - EBUSY ; goto error ; } if ( snd_ctl_find_hole ( card , kcontrol -> count ) < 0 ) { up_write ( & card -> controls_rwsem ) ; err = - ENOMEM ; goto error ; } list_add_tail ( & kcontrol -> list , & card -> controls ) ; card -> controls_count += kcontrol -> count ; kcontrol -> id . numid = card -> last_numid + 1 ; card -> last_numid += kcontrol -> count ; count = kcontrol -> count ; up_write ( & card -> controls_rwsem ) ; for ( idx = 0 ; idx < count ; idx ++ , id . index ++ , id . numid ++ ) snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_ADD , & id ) ; return 0 ; error : snd_ctl_free_one ( kcontrol ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> id ; if ( id . index > UINT_MAX - kcontrol -> count ) goto error ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 long FS_FOpenFileRead ( const char * filename , fileHandle_t * file , qboolean uniqueFILE ) { searchpath_t * search ; long len ; <S2SV_StartBug> if ( ! fs_searchpaths ) <S2SV_EndBug> Com_Error ( ERR_FATAL , \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; <S2SV_StartBug> for ( search = fs_searchpaths ; search ; search = search -> next ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> len = FS_FOpenFileReadDir ( filename , search , file , uniqueFILE , qfalse ) ; if ( file == NULL ) { if ( len > 0 ) return len ; } else { if ( len >= 0 && * file ) return len ; } } # ifdef FS_MISSING if ( missingFiles ) fprintf ( missingFiles , \"%s\\\\n\" , filename ) ; # endif if ( file ) { * file = 0 ; return - 1 ; } else { return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long len ; qboolean isLocalConfig ; <S2SV_ModStart> \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; isLocalConfig = ! strcmp ( filename , \"autoexec.cfg\" ) || ! strcmp ( filename , Q3CONFIG_CFG ) ; <S2SV_ModStart> next ) { if ( isLocalConfig && search -> pack ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><codec><S2SV_blank><width><S2SV_blank><height><S2SV_blank><infile><S2SV_blank><outfile>\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static arg_ty ast_for_arg ( struct compiling * c , const node * n ) { identifier name ; expr_ty annotation = NULL ; node * ch ; arg_ty ret ; assert ( TYPE ( n ) == tfpdef || TYPE ( n ) == vfpdef ) ; ch = CHILD ( n , 0 ) ; name = NEW_IDENTIFIER ( ch ) ; if ( ! name ) return NULL ; if ( forbidden_name ( c , name , ch , 0 ) ) return NULL ; if ( NCH ( n ) == 3 && TYPE ( CHILD ( n , 1 ) ) == COLON ) { annotation = ast_for_expr ( c , CHILD ( n , 2 ) ) ; if ( ! annotation ) return NULL ; } <S2SV_StartBug> ret = arg ( name , annotation , LINENO ( n ) , n -> n_col_offset , <S2SV_EndBug> n -> n_end_lineno , n -> n_end_col_offset , c -> c_arena ) ; if ( ! ret ) return NULL ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , annotation , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21381\n\n```\nCWE-74 static gboolean export_desktop_file ( const char * app , const char * branch , const char * arch , GKeyFile * metadata , const char * const * previous_ids , int parent_fd , const char * name , struct stat * stat_buf , char * * target , GCancellable * cancellable , GError * * error ) { gboolean ret = FALSE ; glnx_autofd int desktop_fd = - 1 ; g_autofree char * tmpfile_name = g_strdup_printf ( \"export-desktop-XXXXXX\" ) ; g_autoptr ( GOutputStream ) out_stream = NULL ; g_autofree gchar * data = NULL ; gsize data_len ; g_autofree gchar * new_data = NULL ; gsize new_data_len ; g_autoptr ( GKeyFile ) keyfile = NULL ; g_autofree gchar * old_exec = NULL ; gint old_argc ; g_auto ( GStrv ) old_argv = NULL ; g_auto ( GStrv ) groups = NULL ; GString * new_exec = NULL ; g_autofree char * escaped_app = maybe_quote ( app ) ; g_autofree char * escaped_branch = maybe_quote ( branch ) ; g_autofree char * escaped_arch = maybe_quote ( arch ) ; int i ; if ( ! flatpak_openat_noatime ( parent_fd , name , & desktop_fd , cancellable , error ) ) goto out ; if ( ! read_fd ( desktop_fd , stat_buf , & data , & data_len , error ) ) goto out ; keyfile = g_key_file_new ( ) ; if ( ! g_key_file_load_from_data ( keyfile , data , data_len , G_KEY_FILE_KEEP_TRANSLATIONS , error ) ) goto out ; if ( g_str_has_suffix ( name , \".service\" ) ) { g_autofree gchar * dbus_name = NULL ; g_autofree gchar * expected_dbus_name = g_strndup ( name , strlen ( name ) - strlen ( \".service\" ) ) ; dbus_name = g_key_file_get_string ( keyfile , \"D-BUS<S2SV_blank>Service\" , \"Name\" , NULL ) ; if ( dbus_name == NULL || strcmp ( dbus_name , expected_dbus_name ) != 0 ) { return flatpak_fail_error ( error , FLATPAK_ERROR_EXPORT_FAILED , _ ( \"D-Bus<S2SV_blank>service<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>has<S2SV_blank>wrong<S2SV_blank>name\" ) , name ) ; } } if ( g_str_has_suffix ( name , \".desktop\" ) ) { gsize length ; g_auto ( GStrv ) tags = g_key_file_get_string_list ( metadata , \"Application\" , \"tags\" , & length , NULL ) ; if ( tags != NULL ) { g_key_file_set_string_list ( keyfile , G_KEY_FILE_DESKTOP_GROUP , \"X-Flatpak-Tags\" , ( const char * const * ) tags , length ) ; } g_key_file_set_string ( keyfile , G_KEY_FILE_DESKTOP_GROUP , \"X-Flatpak\" , app ) ; if ( previous_ids != NULL ) { const char * X_FLATPAK_RENAMED_FROM = \"X-Flatpak-RenamedFrom\" ; g_auto ( GStrv ) renamed_from = g_key_file_get_string_list ( keyfile , G_KEY_FILE_DESKTOP_GROUP , X_FLATPAK_RENAMED_FROM , NULL , NULL ) ; g_autoptr ( GPtrArray ) merged = g_ptr_array_new_with_free_func ( g_free ) ; g_autoptr ( GHashTable ) seen = g_hash_table_new ( g_str_hash , g_str_equal ) ; const char * new_suffix ; for ( i = 0 ; renamed_from != NULL && renamed_from [ i ] != NULL ; i ++ ) { if ( ! g_hash_table_contains ( seen , renamed_from [ i ] ) ) { gchar * copy = g_strdup ( renamed_from [ i ] ) ; g_hash_table_insert ( seen , copy , copy ) ; g_ptr_array_add ( merged , g_steal_pointer ( & copy ) ) ; } } g_assert ( g_str_has_prefix ( name , app ) ) ; new_suffix = name + strlen ( app ) ; for ( i = 0 ; previous_ids [ i ] != NULL ; i ++ ) { g_autofree gchar * previous_desktop = g_strconcat ( previous_ids [ i ] , new_suffix , NULL ) ; if ( ! g_hash_table_contains ( seen , previous_desktop ) ) { g_hash_table_insert ( seen , previous_desktop , previous_desktop ) ; g_ptr_array_add ( merged , g_steal_pointer ( & previous_desktop ) ) ; } } if ( merged -> len > 0 ) { g_ptr_array_add ( merged , NULL ) ; g_key_file_set_string_list ( keyfile , G_KEY_FILE_DESKTOP_GROUP , X_FLATPAK_RENAMED_FROM , ( const char * const * ) merged -> pdata , merged -> len - 1 ) ; } } } groups = g_key_file_get_groups ( keyfile , NULL ) ; for ( i = 0 ; groups [ i ] != NULL ; i ++ ) { g_auto ( GStrv ) flatpak_run_opts = g_key_file_get_string_list ( keyfile , groups [ i ] , \"X-Flatpak-RunOptions\" , NULL , NULL ) ; g_autofree char * flatpak_run_args = format_flatpak_run_args_from_run_opts ( flatpak_run_opts ) ; g_key_file_remove_key ( keyfile , groups [ i ] , \"X-Flatpak-RunOptions\" , NULL ) ; g_key_file_remove_key ( keyfile , groups [ i ] , \"TryExec\" , NULL ) ; g_key_file_remove_key ( keyfile , groups [ i ] , \"X-GNOME-Bugzilla-ExtraInfoScript\" , NULL ) ; new_exec = g_string_new ( \"\" ) ; g_string_append_printf ( new_exec , FLATPAK_BINDIR \"/flatpak<S2SV_blank>run<S2SV_blank>--branch=%s<S2SV_blank>--arch=%s\" , escaped_branch , escaped_arch ) ; if ( flatpak_run_args != NULL ) g_string_append_printf ( new_exec , \"%s\" , flatpak_run_args ) ; old_exec = g_key_file_get_string ( keyfile , groups [ i ] , \"Exec\" , NULL ) ; if ( old_exec && g_shell_parse_argv ( old_exec , & old_argc , & old_argv , NULL ) && old_argc >= 1 ) { int j ; g_autofree char * command = maybe_quote ( old_argv [ 0 ] ) ; g_string_append_printf ( new_exec , \"<S2SV_blank>--command=%s\" , command ) ; for ( j = 1 ; j < old_argc ; j ++ ) { if ( strcasecmp ( old_argv [ j ] , \"%f\" ) == 0 || strcasecmp ( old_argv [ j ] , \"%u\" ) == 0 ) { g_string_append ( new_exec , \"<S2SV_blank>--file-forwarding\" ) ; break ; } } g_string_append ( new_exec , \"<S2SV_blank>\" ) ; g_string_append ( new_exec , escaped_app ) ; for ( j = 1 ; j < old_argc ; j ++ ) { g_autofree char * arg = maybe_quote ( old_argv [ j ] ) ; if ( strcasecmp ( arg , \"%f\" ) == 0 ) g_string_append_printf ( new_exec , \"<S2SV_blank>@@<S2SV_blank>%s<S2SV_blank>@@\" , arg ) ; else if ( strcasecmp ( arg , \"%u\" ) == 0 ) g_string_append_printf ( new_exec , \"<S2SV_blank>@@u<S2SV_blank>%s<S2SV_blank>@@\" , arg ) ; <S2SV_StartBug> else if ( strcmp ( arg , \"@@\" ) == 0 || strcmp ( arg , \"@@u\" ) == 0 ) <S2SV_EndBug> g_print ( _ ( \"Skipping<S2SV_blank>invalid<S2SV_blank>Exec<S2SV_blank>argument<S2SV_blank>%s\\\\n\" ) , arg ) ; else g_string_append_printf ( new_exec , \"<S2SV_blank>%s\" , arg ) ; } } else { g_string_append ( new_exec , \"<S2SV_blank>\" ) ; g_string_append ( new_exec , escaped_app ) ; } g_key_file_set_string ( keyfile , groups [ i ] , G_KEY_FILE_DESKTOP_KEY_EXEC , new_exec -> str ) ; } new_data = g_key_file_to_data ( keyfile , & new_data_len , error ) ; if ( new_data == NULL ) goto out ; if ( ! flatpak_open_in_tmpdir_at ( parent_fd , 0755 , tmpfile_name , & out_stream , cancellable , error ) ) goto out ; if ( ! g_output_stream_write_all ( out_stream , new_data , new_data_len , NULL , cancellable , error ) ) goto out ; if ( ! g_output_stream_close ( out_stream , cancellable , error ) ) goto out ; if ( target ) * target = g_steal_pointer ( & tmpfile_name ) ; ret = TRUE ; out : if ( new_exec != NULL ) g_string_free ( new_exec , TRUE ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> else if ( g_str_has_prefix <S2SV_ModEnd> ( arg , <S2SV_ModStart> , \"@@\" ) <S2SV_ModEnd> ) g_print (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_update_spatial_layer_framerate ( VP9_COMP * const cpi , double framerate ) { <S2SV_StartBug> const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> <S2SV_StartBug> LAYER_CONTEXT * const lc = get_layer_context ( & cpi -> svc ) ; <S2SV_EndBug> RATE_CONTROL * const lrc = & lc -> rc ; lc -> framerate = framerate ; <S2SV_StartBug> lrc -> av_per_frame_bandwidth = ( int ) ( lc -> target_bandwidth / lc -> framerate ) ; <S2SV_EndBug> <S2SV_StartBug> lrc -> min_frame_bandwidth = ( int ) ( lrc -> av_per_frame_bandwidth * <S2SV_EndBug> oxcf -> two_pass_vbrmin_section / 100 ) ; <S2SV_StartBug> lrc -> max_frame_bandwidth = ( int ) ( ( ( int64_t ) lrc -> av_per_frame_bandwidth * <S2SV_EndBug> oxcf -> two_pass_vbrmax_section ) / 100 ) ; <S2SV_StartBug> lrc -> max_gf_interval = 16 ; <S2SV_EndBug> lrc -> static_scene_max_gf_interval = cpi -> key_frame_frequency >> 1 ; if ( oxcf -> play_alternate && oxcf -> lag_in_frames ) { if ( lrc -> max_gf_interval > oxcf -> lag_in_frames - 1 ) lrc -> max_gf_interval = oxcf -> lag_in_frames - 1 ; if ( lrc -> static_scene_max_gf_interval > oxcf -> lag_in_frames - 1 ) lrc -> static_scene_max_gf_interval = oxcf -> lag_in_frames - 1 ; } if ( lrc -> max_gf_interval > lrc -> static_scene_max_gf_interval ) lrc -> max_gf_interval = lrc -> static_scene_max_gf_interval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> = get_layer_context ( cpi <S2SV_ModEnd> ) ; RATE_CONTROL <S2SV_ModStart> ; lrc -> avg_frame_bandwidth <S2SV_ModEnd> = ( int <S2SV_ModStart> ( lrc -> avg_frame_bandwidth <S2SV_ModEnd> * oxcf -> <S2SV_ModStart> ) lrc -> avg_frame_bandwidth <S2SV_ModEnd> * oxcf -> <S2SV_ModStart> 100 ) ; vp9_rc_set_gf_interval_range ( cpi , lrc ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-5210\n\n```\nCWE-120 void choose_windows ( s ) const char * s ; { <S2SV_StartBug> register int i ; <S2SV_EndBug> for ( i = 0 ; winchoices [ i ] . procs ; i ++ ) { if ( '+' == winchoices [ i ] . procs -> name [ 0 ] ) continue ; if ( '-' == winchoices [ i ] . procs -> name [ 0 ] ) continue ; if ( ! strcmpi ( s , winchoices [ i ] . procs -> name ) ) { windowprocs = * winchoices [ i ] . procs ; if ( last_winchoice && last_winchoice -> ini_routine ) ( * last_winchoice -> ini_routine ) ( WININIT_UNDO ) ; if ( winchoices [ i ] . ini_routine ) ( * winchoices [ i ] . ini_routine ) ( WININIT ) ; last_winchoice = & winchoices [ i ] ; return ; } } if ( ! windowprocs . win_raw_print ) windowprocs . win_raw_print = def_raw_print ; if ( ! windowprocs . win_wait_synch ) windowprocs . win_wait_synch = def_wait_synch ; if ( ! winchoices [ 0 ] . procs ) { <S2SV_StartBug> raw_printf ( \"No<S2SV_blank>window<S2SV_blank>types?\" ) ; <S2SV_EndBug> nh_terminate ( EXIT_FAILURE ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( ! winchoices [ 1 ] . procs ) { config_error_add ( \"Window<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>recognized.<S2SV_blank><S2SV_blank>The<S2SV_blank>only<S2SV_blank>choice<S2SV_blank>is:<S2SV_blank>%s\" , s , winchoices [ 0 ] . procs -> name ) ; } else { char buf [ BUFSZ ] ; boolean first = TRUE ; buf [ 0 ] = '\\\\0' ; for ( i = 0 ; winchoices [ i ] . procs ; i ++ ) { if ( '+' == winchoices [ i ] . procs -> name [ 0 ] ) continue ; if ( '-' == winchoices [ i ] . procs -> name [ 0 ] ) continue ; Sprintf ( eos ( buf ) , \"%s%s\" , first ? \"\" : \",<S2SV_blank>\" , winchoices [ i ] . procs -> name ) ; first = FALSE ; } config_error_add ( \"Window<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>recognized.<S2SV_blank><S2SV_blank>Choices<S2SV_blank>are:<S2SV_blank><S2SV_blank>%s\" , s , buf ) ; } <S2SV_StartBug> if ( windowprocs . win_raw_print == def_raw_print <S2SV_EndBug> || WINDOWPORT ( \"safe-startup\" ) ) nh_terminate ( EXIT_SUCCESS ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ; { int i ; char * tmps = 0 <S2SV_ModEnd> ; for ( <S2SV_ModStart> { raw_printf ( \"No<S2SV_blank>window<S2SV_blank>types<S2SV_blank>supported?\" <S2SV_ModEnd> ) ; nh_terminate <S2SV_ModStart> ) ; } # define WINDOW_TYPE_MAXLEN 50 if ( strlen ( s ) >= WINDOW_TYPE_MAXLEN ) { tmps = ( char * ) alloc ( WINDOW_TYPE_MAXLEN ) ; ( void ) strncpy ( tmps , s , WINDOW_TYPE_MAXLEN - 1 ) ; tmps [ WINDOW_TYPE_MAXLEN - 1 ] = '\\\\0' ; s = tmps ; } # undef WINDOW_TYPE_MAXLEN <S2SV_ModStart> } if ( tmps ) free ( ( genericptr_t ) tmps ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010317\n\n```\nCWE-908 int ParseCaffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { <S2SV_StartBug> uint32_t chan_chunk = 0 , channel_layout = 0 , bcount ; <S2SV_EndBug> unsigned char * channel_identities = NULL ; unsigned char * channel_reorder = NULL ; int64_t total_samples = 0 , infilesize ; CAFFileHeader caf_file_header ; CAFChunkHeader caf_chunk_header ; CAFAudioFormat caf_audio_format ; int i ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & caf_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & caf_file_header ) + 4 , sizeof ( CAFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( CAFFileHeader ) - 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_file_header , sizeof ( CAFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_file_header , CAFFileHeaderFormat ) ; if ( caf_file_header . mFileVersion != 1 ) { error_line ( \"%s:<S2SV_blank>can\\'t<S2SV_blank>handle<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>.CAF<S2SV_blank>files!\" , infilename , caf_file_header . mFileVersion ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & caf_chunk_header , sizeof ( CAFChunkHeader ) , & bcount ) || bcount != sizeof ( CAFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_chunk_header , sizeof ( CAFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_chunk_header , CAFChunkHeaderFormat ) ; if ( ! strncmp ( caf_chunk_header . mChunkType , \"desc\" , 4 ) ) { int supported = TRUE ; if ( caf_chunk_header . mChunkSize != sizeof ( CAFAudioFormat ) || ! DoReadFile ( infile , & caf_audio_format , ( uint32_t ) caf_chunk_header . mChunkSize , & bcount ) || bcount != caf_chunk_header . mChunkSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_audio_format , ( uint32_t ) caf_chunk_header . mChunkSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } <S2SV_StartBug> WavpackBigEndianToNative ( & caf_audio_format , CAFAudioFormatFormat ) ; <S2SV_EndBug> if ( debug_logging_mode ) { char formatstr [ 5 ] ; memcpy ( formatstr , caf_audio_format . mFormatID , 4 ) ; formatstr [ 4 ] = 0 ; error_line ( \"format<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>flags<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>sampling<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%g\" , formatstr , caf_audio_format . mFormatFlags , caf_audio_format . mSampleRate ) ; error_line ( \"packet<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>and<S2SV_blank>%d<S2SV_blank>frames\" , caf_audio_format . mBytesPerPacket , caf_audio_format . mFramesPerPacket ) ; error_line ( \"channels<S2SV_blank>per<S2SV_blank>frame<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>bits<S2SV_blank>per<S2SV_blank>channel<S2SV_blank>=<S2SV_blank>%d\" , caf_audio_format . mChannelsPerFrame , caf_audio_format . mBitsPerChannel ) ; } if ( strncmp ( caf_audio_format . mFormatID , \"lpcm\" , 4 ) || ( caf_audio_format . mFormatFlags & ~ 3 ) ) supported = FALSE ; else if ( caf_audio_format . mSampleRate < 1.0 || caf_audio_format . mSampleRate > 16777215.0 || caf_audio_format . mSampleRate != floor ( caf_audio_format . mSampleRate ) ) supported = FALSE ; else if ( ! caf_audio_format . mChannelsPerFrame || caf_audio_format . mChannelsPerFrame > 256 ) supported = FALSE ; else if ( caf_audio_format . mBitsPerChannel < 1 || caf_audio_format . mBitsPerChannel > 32 || ( ( caf_audio_format . mFormatFlags & CAF_FORMAT_FLOAT ) && caf_audio_format . mBitsPerChannel != 32 ) ) supported = FALSE ; else if ( caf_audio_format . mFramesPerPacket != 1 || caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame < ( caf_audio_format . mBitsPerChannel + 7 ) / 8 || caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame > 4 || caf_audio_format . mBytesPerPacket % caf_audio_format . mChannelsPerFrame ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.CAF<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } config -> bytes_per_sample = caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame ; config -> float_norm_exp = ( caf_audio_format . mFormatFlags & CAF_FORMAT_FLOAT ) ? 127 : 0 ; config -> bits_per_sample = caf_audio_format . mBitsPerChannel ; config -> num_channels = caf_audio_format . mChannelsPerFrame ; config -> sample_rate = ( int ) caf_audio_format . mSampleRate ; if ( ! ( caf_audio_format . mFormatFlags & CAF_FORMAT_LITTLE_ENDIAN ) && config -> bytes_per_sample > 1 ) config -> qmode |= QMODE_BIG_ENDIAN ; if ( config -> bytes_per_sample == 1 ) config -> qmode |= QMODE_SIGNED_BYTES ; if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>%s-endian<S2SV_blank>floating<S2SV_blank>point\" , ( config -> qmode & QMODE_BIG_ENDIAN ) ? \"big\" : \"little\" ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>%s-endian<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , ( config -> qmode & QMODE_BIG_ENDIAN ) ? \"big\" : \"little\" , config -> bytes_per_sample ) ; } } else if ( ! strncmp ( caf_chunk_header . mChunkType , \"chan\" , 4 ) ) { CAFChannelLayout * caf_channel_layout ; if ( caf_chunk_header . mChunkSize < 0 || caf_chunk_header . mChunkSize > 1024 || caf_chunk_header . mChunkSize < sizeof ( CAFChannelLayout ) ) { error_line ( \"this<S2SV_blank>.CAF<S2SV_blank>file<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>\\'chan\\'<S2SV_blank>chunk!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"\\'chan\\'<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes\" , ( int ) caf_chunk_header . mChunkSize ) ; caf_channel_layout = malloc ( ( size_t ) caf_chunk_header . mChunkSize ) ; if ( ! DoReadFile ( infile , caf_channel_layout , ( uint32_t ) caf_chunk_header . mChunkSize , & bcount ) || bcount != caf_chunk_header . mChunkSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , caf_channel_layout , ( uint32_t ) caf_chunk_header . mChunkSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( caf_channel_layout , CAFChannelLayoutFormat ) ; chan_chunk = 1 ; if ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { error_line ( \"this<S2SV_blank>CAF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } switch ( caf_channel_layout -> mChannelLayoutTag ) { case kCAFChannelLayoutTag_UseChannelDescriptions : { CAFChannelDescription * descriptions = ( CAFChannelDescription * ) ( caf_channel_layout + 1 ) ; int num_descriptions = caf_channel_layout -> mNumberChannelDescriptions ; int label , cindex = 0 , idents = 0 ; if ( caf_chunk_header . mChunkSize != sizeof ( CAFChannelLayout ) + sizeof ( CAFChannelDescription ) * num_descriptions || num_descriptions != config -> num_channels ) { error_line ( \"channel<S2SV_blank>descriptions<S2SV_blank>in<S2SV_blank>\\'chan\\'<S2SV_blank>chunk<S2SV_blank>are<S2SV_blank>the<S2SV_blank>wrong<S2SV_blank>size!\" ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } if ( num_descriptions >= 256 ) { error_line ( \"%d<S2SV_blank>channel<S2SV_blank>descriptions<S2SV_blank>is<S2SV_blank>more<S2SV_blank>than<S2SV_blank>we<S2SV_blank>can<S2SV_blank>handle...ignoring!\" ) ; break ; } channel_reorder = malloc ( num_descriptions ) ; memset ( channel_reorder , - 1 , num_descriptions ) ; channel_identities = malloc ( num_descriptions + 1 ) ; for ( i = 0 ; i < num_descriptions ; ++ i ) { WavpackBigEndianToNative ( descriptions + i , CAFChannelDescriptionFormat ) ; if ( debug_logging_mode ) error_line ( \"chan<S2SV_blank>%d<S2SV_blank>--><S2SV_blank>%d\" , i + 1 , descriptions [ i ] . mChannelLabel ) ; } for ( label = 1 ; label <= 18 ; ++ label ) for ( i = 0 ; i < num_descriptions ; ++ i ) if ( descriptions [ i ] . mChannelLabel == label ) { config -> channel_mask |= 1 << ( label - 1 ) ; channel_reorder [ i ] = cindex ++ ; break ; } for ( i = 0 ; i < num_descriptions ; ++ i ) if ( channel_reorder [ i ] == ( unsigned char ) - 1 ) { uint32_t clabel = descriptions [ i ] . mChannelLabel ; if ( clabel == 0 || clabel == 0xffffffff || clabel == 100 ) channel_identities [ idents ++ ] = 0xff ; else if ( ( clabel >= 33 && clabel <= 44 ) || ( clabel >= 200 && clabel <= 207 ) || ( clabel >= 301 && clabel <= 305 ) ) channel_identities [ idents ++ ] = clabel >= 301 ? clabel - 80 : clabel ; else { error_line ( \"warning:<S2SV_blank>unknown<S2SV_blank>channel<S2SV_blank>descriptions<S2SV_blank>label:<S2SV_blank>%d\" , clabel ) ; channel_identities [ idents ++ ] = 0xff ; } channel_reorder [ i ] = cindex ++ ; } for ( i = 0 ; i < num_descriptions ; ++ i ) if ( channel_reorder [ i ] != i ) break ; if ( i == num_descriptions ) { free ( channel_reorder ) ; channel_reorder = NULL ; } else { config -> qmode |= QMODE_REORDERED_CHANS ; channel_layout = num_descriptions ; } if ( ! idents ) { free ( channel_identities ) ; channel_identities = NULL ; } else channel_identities [ idents ] = 0 ; if ( debug_logging_mode ) { error_line ( \"layout_tag<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>so<S2SV_blank>generated<S2SV_blank>bitmap<S2SV_blank>of<S2SV_blank>0x%08x<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>descriptions,<S2SV_blank>%d<S2SV_blank>non-MS\" , caf_channel_layout -> mChannelLayoutTag , config -> channel_mask , caf_channel_layout -> mNumberChannelDescriptions , idents ) ; if ( channel_reorder && num_descriptions <= 8 ) { char reorder_string [ ] = \"12345678\" ; for ( i = 0 ; i < num_descriptions ; ++ i ) reorder_string [ i ] = channel_reorder [ i ] + '1' ; reorder_string [ i ] = 0 ; error_line ( \"reordering<S2SV_blank>string<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , reorder_string ) ; } } } break ; case kCAFChannelLayoutTag_UseChannelBitmap : config -> channel_mask = caf_channel_layout -> mChannelBitmap ; if ( debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>so<S2SV_blank>using<S2SV_blank>supplied<S2SV_blank>bitmap<S2SV_blank>of<S2SV_blank>0x%08x\" , caf_channel_layout -> mChannelLayoutTag , caf_channel_layout -> mChannelBitmap ) ; break ; default : for ( i = 0 ; i < NUM_LAYOUTS ; ++ i ) if ( caf_channel_layout -> mChannelLayoutTag == layouts [ i ] . mChannelLayoutTag ) { config -> channel_mask = layouts [ i ] . mChannelBitmap ; channel_layout = layouts [ i ] . mChannelLayoutTag ; if ( layouts [ i ] . mChannelReorder ) { channel_reorder = ( unsigned char * ) strdup ( layouts [ i ] . mChannelReorder ) ; config -> qmode |= QMODE_REORDERED_CHANS ; } if ( layouts [ i ] . mChannelIdentities ) channel_identities = ( unsigned char * ) strdup ( layouts [ i ] . mChannelIdentities ) ; if ( debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>0x%08x<S2SV_blank>found<S2SV_blank>in<S2SV_blank>table,<S2SV_blank>bitmap<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>reorder<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>identities<S2SV_blank>=<S2SV_blank>%s\" , channel_layout , config -> channel_mask , channel_reorder ? \"yes\" : \"no\" , channel_identities ? \"yes\" : \"no\" ) ; break ; } if ( i == NUM_LAYOUTS && debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>0x%08x<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>table...all<S2SV_blank>channels<S2SV_blank>unassigned\" , caf_channel_layout -> mChannelLayoutTag ) ; break ; } free ( caf_channel_layout ) ; } else if ( ! strncmp ( caf_chunk_header . mChunkType , \"data\" , 4 ) ) { uint32_t mEditCount ; <S2SV_StartBug> if ( ! DoReadFile ( infile , & mEditCount , sizeof ( mEditCount ) , & bcount ) || <S2SV_EndBug> bcount != sizeof ( mEditCount ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & mEditCount , sizeof ( mEditCount ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } if ( ( config -> qmode & QMODE_IGNORE_LENGTH ) || caf_chunk_header . mChunkSize == - 1 ) { config -> qmode |= QMODE_IGNORE_LENGTH ; if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / caf_audio_format . mBytesPerPacket ; else total_samples = - 1 ; } else { if ( infilesize && infilesize - caf_chunk_header . mChunkSize > 16777216 ) { error_line ( \".CAF<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>CAFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ( caf_chunk_header . mChunkSize - 4 ) % caf_audio_format . mBytesPerPacket ) { error_line ( \".CAF<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>data<S2SV_blank>chunk<S2SV_blank>size,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } total_samples = ( caf_chunk_header . mChunkSize - 4 ) / caf_audio_format . mBytesPerPacket ; if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.CAF<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } break ; } else { uint32_t bytes_to_copy = ( uint32_t ) caf_chunk_header . mChunkSize ; char * buff ; if ( caf_chunk_header . mChunkSize < 0 || caf_chunk_header . mChunkSize > 1048576 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , caf_chunk_header . mChunkType [ 0 ] , caf_chunk_header . mChunkType [ 1 ] , caf_chunk_header . mChunkType [ 2 ] , caf_chunk_header . mChunkType [ 3 ] , caf_chunk_header . mChunkSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! chan_chunk && ! config -> channel_mask && config -> num_channels <= 2 && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) config -> channel_mask = 0x5 - config -> num_channels ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , channel_identities ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } if ( channel_identities ) free ( channel_identities ) ; if ( channel_layout || channel_reorder ) { if ( ! WavpackSetChannelLayout ( wpc , channel_layout , channel_reorder ) ) { error_line ( \"problem<S2SV_blank>with<S2SV_blank>setting<S2SV_blank>channel<S2SV_blank>layout<S2SV_blank>(should<S2SV_blank>not<S2SV_blank>happen)\" ) ; return WAVPACK_SOFT_ERROR ; } if ( channel_reorder ) free ( channel_reorder ) ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { uint32_t chan_chunk = 0 , desc_chunk <S2SV_ModStart> , CAFAudioFormatFormat ) ; desc_chunk = 1 <S2SV_ModStart> if ( ! desc_chunk || !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0589\n\n```\nCWE-119 IHEVCD_ERROR_T ihevcd_parse_slice_data ( codec_t * ps_codec ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; WORD32 end_of_slice_flag ; sps_t * ps_sps ; pps_t * ps_pps ; slice_header_t * ps_slice_hdr ; WORD32 end_of_pic ; tile_t * ps_tile , * ps_tile_prev ; WORD32 i ; WORD32 ctb_addr ; WORD32 tile_idx ; WORD32 cabac_init_idc ; WORD32 ctb_size ; WORD32 num_ctb_in_row ; WORD32 num_min4x4_in_ctb ; WORD32 slice_qp ; WORD32 slice_start_ctb_idx ; WORD32 tile_start_ctb_idx ; ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr_base ; ps_pps = ps_codec -> s_parse . ps_pps_base ; ps_sps = ps_codec -> s_parse . ps_sps_base ; ps_slice_hdr += ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_pps += ps_slice_hdr -> i1_pps_id ; ps_sps += ps_pps -> i1_sps_id ; if ( 0 != ps_codec -> s_parse . i4_cur_slice_idx ) { if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_codec -> s_parse . i4_cur_independent_slice_idx = ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ; } } ctb_size = 1 << ps_sps -> i1_log2_ctb_size ; num_min4x4_in_ctb = ( ctb_size / 4 ) * ( ctb_size / 4 ) ; num_ctb_in_row = ps_sps -> i2_pic_wd_in_ctb ; if ( 0 == ps_codec -> i4_slice_error ) { ps_codec -> s_parse . i4_ctb_x = ps_slice_hdr -> i2_ctb_x ; ps_codec -> s_parse . i4_ctb_y = ps_slice_hdr -> i2_ctb_y ; } ps_codec -> s_parse . ps_pps = ps_pps ; ps_codec -> s_parse . ps_sps = ps_sps ; ps_codec -> s_parse . ps_slice_hdr = ps_slice_hdr ; ihevcd_get_tile_pos ( ps_pps , ps_sps , ps_codec -> s_parse . i4_ctb_x , ps_codec -> s_parse . i4_ctb_y , & ps_codec -> s_parse . i4_ctb_tile_x , & ps_codec -> s_parse . i4_ctb_tile_y , & tile_idx ) ; ps_codec -> s_parse . ps_tile = ps_pps -> ps_tile + tile_idx ; ps_codec -> s_parse . i4_cur_tile_idx = tile_idx ; ps_tile = ps_codec -> s_parse . ps_tile ; if ( tile_idx ) ps_tile_prev = ps_tile - 1 ; else ps_tile_prev = ps_tile ; if ( 0 == ps_codec -> i4_slice_error ) { if ( 1 == ps_slice_hdr -> i1_dependent_slice_flag ) { if ( ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) && ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) { ps_codec -> s_parse . i4_ctb_slice_x = 0 ; ps_codec -> s_parse . i4_ctb_slice_y = 0 ; } } if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_codec -> s_parse . i4_ctb_slice_x = 0 ; ps_codec -> s_parse . i4_ctb_slice_y = 0 ; } } if ( ( 0 == ps_codec -> s_parse . i4_ctb_y ) && ( 0 == ps_codec -> s_parse . i4_ctb_x ) ) { ret = ihevcd_parse_pic_init ( ps_codec ) ; RETURN_IF ( ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) , ret ) ; ps_codec -> s_parse . pu4_pic_tu_idx [ 0 ] = 0 ; ps_codec -> s_parse . pu4_pic_pu_idx [ 0 ] = 0 ; ps_codec -> s_parse . i4_cur_independent_slice_idx = 0 ; ps_codec -> s_parse . i4_ctb_tile_x = 0 ; ps_codec -> s_parse . i4_ctb_tile_y = 0 ; } { mv_buf_t * ps_mv_buf = ps_codec -> s_parse . ps_cur_mv_buf ; if ( ps_slice_hdr -> i1_num_ref_idx_l1_active != 0 ) { for ( i = 0 ; i < ps_slice_hdr -> i1_num_ref_idx_l1_active ; i ++ ) { ps_mv_buf -> ai4_l1_collocated_poc [ ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ] [ i ] = ( ( pic_buf_t * ) ps_slice_hdr -> as_ref_pic_list1 [ i ] . pv_pic_buf ) -> i4_abs_poc ; ps_mv_buf -> ai1_l1_collocated_poc_lt [ ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ] [ i ] = ( ( pic_buf_t * ) ps_slice_hdr -> as_ref_pic_list1 [ i ] . pv_pic_buf ) -> u1_used_as_ref ; } } if ( ps_slice_hdr -> i1_num_ref_idx_l0_active != 0 ) { for ( i = 0 ; i < ps_slice_hdr -> i1_num_ref_idx_l0_active ; i ++ ) { ps_mv_buf -> ai4_l0_collocated_poc [ ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ] [ i ] = ( ( pic_buf_t * ) ps_slice_hdr -> as_ref_pic_list0 [ i ] . pv_pic_buf ) -> i4_abs_poc ; ps_mv_buf -> ai1_l0_collocated_poc_lt [ ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ] [ i ] = ( ( pic_buf_t * ) ps_slice_hdr -> as_ref_pic_list0 [ i ] . pv_pic_buf ) -> u1_used_as_ref ; } } } if ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_x ) || ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) ) { WORD32 cur_poc , ref_list_poc , flag = 1 ; cur_poc = ps_slice_hdr -> i4_abs_pic_order_cnt ; for ( i = 0 ; i < ps_slice_hdr -> i1_num_ref_idx_l0_active ; i ++ ) { ref_list_poc = ( ( mv_buf_t * ) ps_slice_hdr -> as_ref_pic_list0 [ i ] . pv_mv_buf ) -> i4_abs_poc ; if ( ref_list_poc > cur_poc ) { flag = 0 ; break ; } } if ( flag && ( ps_slice_hdr -> i1_slice_type == BSLICE ) ) { for ( i = 0 ; i < ps_slice_hdr -> i1_num_ref_idx_l1_active ; i ++ ) { ref_list_poc = ( ( mv_buf_t * ) ps_slice_hdr -> as_ref_pic_list1 [ i ] . pv_mv_buf ) -> i4_abs_poc ; if ( ref_list_poc > cur_poc ) { flag = 0 ; break ; } } } ps_slice_hdr -> i1_low_delay_flag = flag ; } if ( ps_slice_hdr -> i1_slice_type == ISLICE ) { cabac_init_idc = 0 ; } else if ( ps_slice_hdr -> i1_slice_type == PSLICE ) { cabac_init_idc = ps_slice_hdr -> i1_cabac_init_flag ? 2 : 1 ; } else { cabac_init_idc = ps_slice_hdr -> i1_cabac_init_flag ? 1 : 2 ; } slice_qp = ps_slice_hdr -> i1_slice_qp_delta + ps_pps -> i1_pic_init_qp ; slice_qp = CLIP3 ( slice_qp , 0 , 51 ) ; if ( ( 0 == ps_slice_hdr -> i1_dependent_slice_flag ) || ( ( 1 == ps_slice_hdr -> i1_dependent_slice_flag ) && ( ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) && ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) ) ) { ps_codec -> s_parse . u4_qp = slice_qp ; } if ( ( 1 == ps_slice_hdr -> i1_dependent_slice_flag ) && ( ! ( ( ps_codec -> s_parse . i4_ctb_tile_x == 0 ) && ( ps_codec -> s_parse . i4_ctb_tile_y == 0 ) ) ) ) { if ( ( 0 == ps_pps -> i1_entropy_coding_sync_enabled_flag ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag && ( 0 != ps_codec -> s_parse . i4_ctb_x ) ) ) { ihevcd_cabac_reset ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm ) ; } } else if ( ( 0 == ps_pps -> i1_entropy_coding_sync_enabled_flag ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag && ( 0 != ps_codec -> s_parse . i4_ctb_x ) ) ) { <S2SV_StartBug> ihevcd_cabac_init ( & ps_codec -> s_parse . s_cabac , <S2SV_EndBug> & ps_codec -> s_parse . s_bitstrm , slice_qp , cabac_init_idc , & gau1_ihevc_cab_ctxts [ cabac_init_idc ] [ slice_qp ] [ 0 ] ) ; <S2SV_StartBug> } <S2SV_EndBug> do { { WORD32 cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; if ( 1 == ps_codec -> i4_num_cores && 0 == cur_ctb_idx % RESET_TU_BUF_NCTB ) { ps_codec -> s_parse . ps_tu = ps_codec -> s_parse . ps_pic_tu ; ps_codec -> s_parse . i4_pic_tu_idx = 0 ; } } end_of_pic = 0 ; ps_codec -> s_parse . i4_ctb_num_pcm_blks = 0 ; if ( ( ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) && ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) && ( ! ( ( ps_tile -> u1_pos_x == 0 ) && ( ps_tile -> u1_pos_y == 0 ) ) ) && ( ! ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_x ) && ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) ) ) ) { slice_qp = ps_slice_hdr -> i1_slice_qp_delta + ps_pps -> i1_pic_init_qp ; slice_qp = CLIP3 ( slice_qp , 0 , 51 ) ; ps_codec -> s_parse . u4_qp = slice_qp ; ihevcd_get_tile_pos ( ps_pps , ps_sps , ps_codec -> s_parse . i4_ctb_x , ps_codec -> s_parse . i4_ctb_y , & ps_codec -> s_parse . i4_ctb_tile_x , & ps_codec -> s_parse . i4_ctb_tile_y , & tile_idx ) ; ps_codec -> s_parse . ps_tile = ps_pps -> ps_tile + tile_idx ; ps_codec -> s_parse . i4_cur_tile_idx = tile_idx ; ps_tile_prev = ps_tile - 1 ; tile_start_ctb_idx = ps_tile -> u1_pos_x + ps_tile -> u1_pos_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; slice_start_ctb_idx = ps_slice_hdr -> i2_ctb_x + ps_slice_hdr -> i2_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; if ( slice_start_ctb_idx < tile_start_ctb_idx ) { ps_codec -> s_parse . i4_ctb_slice_y = ps_tile -> u1_pos_y - ps_slice_hdr -> i2_ctb_y ; if ( ! ( ( ( ps_slice_hdr -> i2_ctb_x + ps_tile_prev -> u2_wd ) % ps_sps -> i2_pic_wd_in_ctb ) == ps_tile -> u1_pos_x ) ) { if ( ps_slice_hdr -> i2_ctb_y <= ps_tile -> u1_pos_y ) { if ( ps_slice_hdr -> i2_ctb_x > ps_tile -> u1_pos_x ) { ps_codec -> s_parse . i4_ctb_slice_y -= 1 ; } } } } { <S2SV_StartBug> ihevcd_cabac_init ( & ps_codec -> s_parse . s_cabac , <S2SV_EndBug> & ps_codec -> s_parse . s_bitstrm , slice_qp , cabac_init_idc , & gau1_ihevc_cab_ctxts [ cabac_init_idc ] [ slice_qp ] [ 0 ] ) ; <S2SV_StartBug> } <S2SV_EndBug> } if ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) { if ( 1 < ps_codec -> i4_num_cores ) { proc_job_t s_job ; IHEVCD_ERROR_T ret ; s_job . i4_cmd = CMD_PROCESS ; s_job . i2_ctb_cnt = ( WORD16 ) ps_tile -> u2_wd ; s_job . i2_ctb_x = ( WORD16 ) ps_codec -> s_parse . i4_ctb_x ; s_job . i2_ctb_y = ( WORD16 ) ps_codec -> s_parse . i4_ctb_y ; s_job . i2_slice_idx = ( WORD16 ) ps_codec -> s_parse . i4_cur_slice_idx ; s_job . i4_tu_coeff_data_ofst = ( UWORD8 * ) ps_codec -> s_parse . pv_tu_coeff_data - ( UWORD8 * ) ps_codec -> s_parse . pv_pic_tu_coeff_data ; ret = ihevcd_jobq_queue ( ( jobq_t * ) ps_codec -> s_parse . pv_proc_jobq , & s_job , sizeof ( proc_job_t ) , 1 ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) return ret ; } else { process_ctxt_t * ps_proc = & ps_codec -> as_process [ 0 ] ; WORD32 tu_coeff_data_ofst = ( UWORD8 * ) ps_codec -> s_parse . pv_tu_coeff_data - ( UWORD8 * ) ps_codec -> s_parse . pv_pic_tu_coeff_data ; ps_proc -> i4_ctb_cnt = ps_tile -> u2_wd ; ps_proc -> i4_ctb_x = ps_codec -> s_parse . i4_ctb_x ; ps_proc -> i4_ctb_y = ps_codec -> s_parse . i4_ctb_y ; ps_proc -> i4_cur_slice_idx = ps_codec -> s_parse . i4_cur_slice_idx ; ihevcd_init_proc_ctxt ( ps_proc , tu_coeff_data_ofst ) ; } } if ( ps_pps -> i1_entropy_coding_sync_enabled_flag ) { if ( 0 == ps_codec -> s_parse . i4_ctb_x ) { WORD32 default_ctxt = 0 ; if ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) && ( ! ps_slice_hdr -> i1_dependent_slice_flag ) ) default_ctxt = 1 ; if ( 1 == ps_sps -> i2_pic_wd_in_ctb ) default_ctxt = 1 ; ps_codec -> s_parse . u4_qp = slice_qp ; if ( default_ctxt ) { <S2SV_StartBug> ihevcd_cabac_init ( & ps_codec -> s_parse . s_cabac , <S2SV_EndBug> & ps_codec -> s_parse . s_bitstrm , slice_qp , cabac_init_idc , & gau1_ihevc_cab_ctxts [ cabac_init_idc ] [ slice_qp ] [ 0 ] ) ; <S2SV_StartBug> } <S2SV_EndBug> else { <S2SV_StartBug> ihevcd_cabac_init ( & ps_codec -> s_parse . s_cabac , <S2SV_EndBug> & ps_codec -> s_parse . s_bitstrm , slice_qp , cabac_init_idc , <S2SV_StartBug> ( const UWORD8 * ) & ps_codec -> s_parse . s_cabac . au1_ctxt_models_sync ) ; <S2SV_EndBug> } } } if ( 0 == ps_codec -> i4_slice_error ) { if ( ps_slice_hdr -> i1_slice_sao_luma_flag || ps_slice_hdr -> i1_slice_sao_chroma_flag ) ihevcd_parse_sao ( ps_codec ) ; } else { sao_t * ps_sao = ps_codec -> s_parse . ps_pic_sao + ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ps_sps -> i2_pic_wd_in_ctb ; ps_sao -> b3_y_type_idx = 0 ; ps_sao -> b3_cb_type_idx = 0 ; ps_sao -> b3_cr_type_idx = 0 ; } { WORD32 ctb_indx ; ctb_indx = ps_codec -> s_parse . i4_ctb_x + ps_sps -> i2_pic_wd_in_ctb * ps_codec -> s_parse . i4_ctb_y ; ps_codec -> s_parse . s_bs_ctxt . pu1_pic_qp_const_in_ctb [ ctb_indx >> 3 ] |= ( 1 << ( ctb_indx & 7 ) ) ; { UWORD16 * pu1_slice_idx = ps_codec -> s_parse . pu1_slice_idx ; pu1_slice_idx [ ctb_indx ] = ps_codec -> s_parse . i4_cur_independent_slice_idx ; } } if ( 0 == ps_codec -> i4_slice_error ) { ihevcd_parse_coding_quadtree ( ps_codec , ( ps_codec -> s_parse . i4_ctb_x << ps_sps -> i1_log2_ctb_size ) , ( ps_codec -> s_parse . i4_ctb_y << ps_sps -> i1_log2_ctb_size ) , ps_sps -> i1_log2_ctb_size , 0 ) ; } else { tu_t * ps_tu = ps_codec -> s_parse . ps_tu ; pu_t * ps_pu = ps_codec -> s_parse . ps_pu ; ps_tu -> b1_cb_cbf = 0 ; ps_tu -> b1_cr_cbf = 0 ; ps_tu -> b1_y_cbf = 0 ; ps_tu -> b4_pos_x = 0 ; ps_tu -> b4_pos_y = 0 ; ps_tu -> b1_transquant_bypass = 0 ; ps_tu -> b3_size = ( ps_sps -> i1_log2_ctb_size - 2 ) ; ps_tu -> b7_qp = ps_codec -> s_parse . u4_qp ; ps_tu -> b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE ; ps_tu -> b6_luma_intra_mode = INTRA_PRED_NONE ; ps_tu -> b1_first_tu_in_cu = 1 ; ps_codec -> s_parse . ps_tu ++ ; ps_codec -> s_parse . s_cu . i4_tu_cnt ++ ; ps_codec -> s_parse . i4_pic_tu_idx ++ ; ps_codec -> s_parse . s_cu . i4_pred_mode = PRED_MODE_SKIP ; ps_codec -> s_parse . s_cu . i4_part_mode = PART_2Nx2N ; ps_pu -> b2_part_idx = 0 ; ps_pu -> b4_pos_x = 0 ; ps_pu -> b4_pos_y = 0 ; ps_pu -> b4_wd = ( ctb_size >> 2 ) - 1 ; ps_pu -> b4_ht = ( ctb_size >> 2 ) - 1 ; ps_pu -> b1_intra_flag = 0 ; ps_pu -> b3_part_mode = ps_codec -> s_parse . s_cu . i4_part_mode ; ps_pu -> b1_merge_flag = 1 ; ps_pu -> b3_merge_idx = 0 ; ps_codec -> s_parse . ps_pu ++ ; ps_codec -> s_parse . i4_pic_pu_idx ++ ; } if ( 0 == ps_codec -> i4_slice_error ) end_of_slice_flag = ihevcd_cabac_decode_terminate ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm ) ; else end_of_slice_flag = 0 ; AEV_TRACE ( \"end_of_slice_flag\" , end_of_slice_flag , ps_codec -> s_parse . s_cabac . u4_range ) ; if ( ps_pps -> i1_tiles_enabled_flag || ps_pps -> i1_entropy_coding_sync_enabled_flag ) { WORD32 end_of_tile = 0 ; WORD32 end_of_tile_row = 0 ; if ( ps_pps -> i1_entropy_coding_sync_enabled_flag || ps_pps -> i1_tiles_enabled_flag ) { if ( 1 == ps_codec -> s_parse . i4_ctb_x ) { WORD32 size = sizeof ( ps_codec -> s_parse . s_cabac . au1_ctxt_models ) ; memcpy ( & ps_codec -> s_parse . s_cabac . au1_ctxt_models_sync , & ps_codec -> s_parse . s_cabac . au1_ctxt_models , size ) ; } } if ( ( ps_codec -> s_parse . i4_ctb_tile_x + 1 ) == ( ps_tile -> u2_wd ) ) { end_of_tile_row = 1 ; if ( ( ps_codec -> s_parse . i4_ctb_tile_y + 1 ) == ps_tile -> u2_ht ) end_of_tile = 1 ; } if ( ( 0 == end_of_slice_flag ) && ( ( ps_pps -> i1_tiles_enabled_flag && end_of_tile ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag && end_of_tile_row ) ) ) { WORD32 end_of_sub_stream_one_bit ; end_of_sub_stream_one_bit = ihevcd_cabac_decode_terminate ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm ) ; AEV_TRACE ( \"end_of_sub_stream_one_bit\" , end_of_sub_stream_one_bit , ps_codec -> s_parse . s_cabac . u4_range ) ; if ( ps_codec -> s_parse . s_bitstrm . u4_bit_ofst % 8 ) ihevcd_bits_flush_to_byte_boundary ( & ps_codec -> s_parse . s_bitstrm ) ; UNUSED ( end_of_sub_stream_one_bit ) ; } } { WORD32 ctb_indx ; ctb_addr = ps_codec -> s_parse . i4_ctb_y * num_ctb_in_row + ps_codec -> s_parse . i4_ctb_x ; ctb_indx = ++ ctb_addr ; if ( ( ps_tile -> u2_wd == ( ps_codec -> s_parse . i4_ctb_tile_x + 1 ) ) && ( ps_tile -> u2_wd != ps_sps -> i2_pic_wd_in_ctb ) ) { ctb_indx = ( ps_sps -> i2_pic_wd_in_ctb * ( ps_codec -> s_parse . i4_ctb_tile_y + 1 + ps_tile -> u1_pos_y ) ) + ps_tile -> u1_pos_x ; if ( ps_tile -> u2_ht == ( ps_codec -> s_parse . i4_ctb_tile_y + 1 ) ) { if ( ( ps_tile -> u2_wd + ps_tile -> u1_pos_x == ps_sps -> i2_pic_wd_in_ctb ) && ( ( ps_tile -> u2_ht + ps_tile -> u1_pos_y == ps_sps -> i2_pic_ht_in_ctb ) ) ) { ctb_indx = ctb_addr ; } else { tile_t * ps_next_tile = ps_codec -> s_parse . ps_tile + 1 ; ctb_indx = ps_next_tile -> u1_pos_x + ( ps_next_tile -> u1_pos_y * ps_sps -> i2_pic_wd_in_ctb ) ; } } } ps_codec -> s_parse . pu4_pic_pu_idx [ ctb_indx ] = ps_codec -> s_parse . i4_pic_pu_idx ; ps_codec -> s_parse . i4_next_pu_ctb_cnt = ctb_indx ; ps_codec -> s_parse . pu1_pu_map += num_min4x4_in_ctb ; if ( 1 == ps_codec -> i4_num_cores ) { ctb_indx = ( 0 == ctb_addr % RESET_TU_BUF_NCTB ) ? RESET_TU_BUF_NCTB : ctb_addr % RESET_TU_BUF_NCTB ; if ( ( ps_tile -> u2_wd == ( ps_codec -> s_parse . i4_ctb_tile_x + 1 ) ) && ( ps_tile -> u2_wd != ps_sps -> i2_pic_wd_in_ctb ) ) { ctb_indx = ( ps_sps -> i2_pic_wd_in_ctb * ( ps_codec -> s_parse . i4_ctb_tile_y + 1 + ps_tile -> u1_pos_y ) ) + ps_tile -> u1_pos_x ; if ( ps_tile -> u2_ht == ( ps_codec -> s_parse . i4_ctb_tile_y + 1 ) ) { if ( ( ps_tile -> u2_wd + ps_tile -> u1_pos_x == ps_sps -> i2_pic_wd_in_ctb ) && ( ( ps_tile -> u2_ht + ps_tile -> u1_pos_y == ps_sps -> i2_pic_ht_in_ctb ) ) ) { ctb_indx = ( 0 == ctb_addr % RESET_TU_BUF_NCTB ) ? RESET_TU_BUF_NCTB : ctb_addr % RESET_TU_BUF_NCTB ; } else { tile_t * ps_next_tile = ps_codec -> s_parse . ps_tile + 1 ; ctb_indx = ps_next_tile -> u1_pos_x + ( ps_next_tile -> u1_pos_y * ps_sps -> i2_pic_wd_in_ctb ) ; } } } ps_codec -> s_parse . i4_next_tu_ctb_cnt = ctb_indx ; ps_codec -> s_parse . pu4_pic_tu_idx [ ctb_indx ] = ps_codec -> s_parse . i4_pic_tu_idx ; } else { ctb_indx = ctb_addr ; if ( ( ps_tile -> u2_wd == ( ps_codec -> s_parse . i4_ctb_tile_x + 1 ) ) && ( ps_tile -> u2_wd != ps_sps -> i2_pic_wd_in_ctb ) ) { ctb_indx = ( ps_sps -> i2_pic_wd_in_ctb * ( ps_codec -> s_parse . i4_ctb_tile_y + 1 + ps_tile -> u1_pos_y ) ) + ps_tile -> u1_pos_x ; if ( ps_tile -> u2_ht == ( ps_codec -> s_parse . i4_ctb_tile_y + 1 ) ) { if ( ( ps_tile -> u2_wd + ps_tile -> u1_pos_x == ps_sps -> i2_pic_wd_in_ctb ) && ( ( ps_tile -> u2_ht + ps_tile -> u1_pos_y == ps_sps -> i2_pic_ht_in_ctb ) ) ) { ctb_indx = ctb_addr ; } else { tile_t * ps_next_tile = ps_codec -> s_parse . ps_tile + 1 ; ctb_indx = ps_next_tile -> u1_pos_x + ( ps_next_tile -> u1_pos_y * ps_sps -> i2_pic_wd_in_ctb ) ; } } } ps_codec -> s_parse . i4_next_tu_ctb_cnt = ctb_indx ; ps_codec -> s_parse . pu4_pic_tu_idx [ ctb_indx ] = ps_codec -> s_parse . i4_pic_tu_idx ; } ps_codec -> s_parse . pu1_tu_map += num_min4x4_in_ctb ; } if ( ( 0 != ps_codec -> i4_disable_deblk_pic ) && ( 1 == ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ) ) { bs_ctxt_t * ps_bs_ctxt = & ps_codec -> s_parse . s_bs_ctxt ; WORD32 log2_ctb_size = ps_sps -> i1_log2_ctb_size ; UWORD8 * pu1_qp ; WORD32 qp_strd ; WORD32 u4_qp_const_in_ctb ; WORD32 cur_ctb_idx ; WORD32 next_ctb_idx ; WORD32 cur_tu_idx ; WORD32 i4_ctb_tu_cnt ; tu_t * ps_tu ; cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_sps -> i2_pic_wd_in_ctb * ps_codec -> s_parse . i4_ctb_y ; qp_strd = ps_sps -> i2_pic_wd_in_ctb << ( log2_ctb_size - 3 ) ; pu1_qp = ps_bs_ctxt -> pu1_pic_qp + ( ( ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * qp_strd ) << ( log2_ctb_size - 3 ) ) ; u4_qp_const_in_ctb = ps_bs_ctxt -> pu1_pic_qp_const_in_ctb [ cur_ctb_idx >> 3 ] & ( 1 << ( cur_ctb_idx & 7 ) ) ; next_ctb_idx = ps_codec -> s_parse . i4_next_tu_ctb_cnt ; if ( 1 == ps_codec -> i4_num_cores ) { i4_ctb_tu_cnt = ps_codec -> s_parse . pu4_pic_tu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx % RESET_TU_BUF_NCTB ] ; cur_tu_idx = ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx % RESET_TU_BUF_NCTB ] ; } else { i4_ctb_tu_cnt = ps_codec -> s_parse . pu4_pic_tu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx ] ; cur_tu_idx = ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx ] ; } ps_tu = & ps_codec -> s_parse . ps_pic_tu [ cur_tu_idx ] ; if ( u4_qp_const_in_ctb ) { pu1_qp [ 0 ] = ps_tu -> b7_qp ; } else { for ( i = 0 ; i < i4_ctb_tu_cnt ; i ++ , ps_tu ++ ) { WORD32 start_pos_x ; WORD32 start_pos_y ; WORD32 tu_size ; start_pos_x = ps_tu -> b4_pos_x ; start_pos_y = ps_tu -> b4_pos_y ; tu_size = 1 << ( ps_tu -> b3_size + 2 ) ; tu_size >>= 2 ; if ( 0 == ( start_pos_x & 1 ) && 0 == ( start_pos_y & 1 ) ) { WORD32 row , col ; for ( row = start_pos_y ; row < start_pos_y + tu_size ; row += 2 ) { for ( col = start_pos_x ; col < start_pos_x + tu_size ; col += 2 ) { pu1_qp [ ( row >> 1 ) * qp_strd + ( col >> 1 ) ] = ps_tu -> b7_qp ; } } } } } } if ( ps_codec -> i4_num_cores <= MV_PRED_NUM_CORES_THRESHOLD ) { WORD8 u1_top_ctb_avail = 1 ; WORD8 u1_left_ctb_avail = 1 ; WORD8 u1_top_lt_ctb_avail = 1 ; WORD8 u1_top_rt_ctb_avail = 1 ; WORD16 i2_wd_in_ctb ; tile_start_ctb_idx = ps_tile -> u1_pos_x + ps_tile -> u1_pos_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; slice_start_ctb_idx = ps_slice_hdr -> i2_ctb_x + ps_slice_hdr -> i2_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; if ( ( slice_start_ctb_idx < tile_start_ctb_idx ) ) { i2_wd_in_ctb = ps_sps -> i2_pic_wd_in_ctb ; } else { i2_wd_in_ctb = ps_tile -> u2_wd ; } if ( ( 0 == ps_codec -> s_parse . i4_ctb_y ) || ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) { u1_top_ctb_avail = 0 ; u1_top_lt_ctb_avail = 0 ; u1_top_rt_ctb_avail = 0 ; } if ( ( 0 == ps_codec -> s_parse . i4_ctb_x ) || ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) ) { u1_left_ctb_avail = 0 ; u1_top_lt_ctb_avail = 0 ; if ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) || ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) { u1_top_ctb_avail = 0 ; if ( ( i2_wd_in_ctb - 1 ) != ps_codec -> s_parse . i4_ctb_slice_x ) { u1_top_rt_ctb_avail = 0 ; } } } else if ( ps_codec -> s_parse . i4_ctb_x > 0 ) { if ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) || ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) { u1_top_ctb_avail = 0 ; u1_top_lt_ctb_avail = 0 ; if ( 0 == ps_codec -> s_parse . i4_ctb_slice_x ) { u1_left_ctb_avail = 0 ; } if ( ( i2_wd_in_ctb - 1 ) != ps_codec -> s_parse . i4_ctb_slice_x ) { u1_top_rt_ctb_avail = 0 ; } } else if ( ( 1 == ps_codec -> s_parse . i4_ctb_slice_y ) && ( 0 == ps_codec -> s_parse . i4_ctb_slice_x ) ) { u1_top_lt_ctb_avail = 0 ; } } if ( ( ( ps_sps -> i2_pic_wd_in_ctb - 1 ) == ps_codec -> s_parse . i4_ctb_x ) || ( ( ps_tile -> u2_wd - 1 ) == ps_codec -> s_parse . i4_ctb_tile_x ) ) { u1_top_rt_ctb_avail = 0 ; } if ( PSLICE == ps_slice_hdr -> i1_slice_type || BSLICE == ps_slice_hdr -> i1_slice_type ) { mv_ctxt_t s_mv_ctxt ; process_ctxt_t * ps_proc ; UWORD32 * pu4_ctb_top_pu_idx ; UWORD32 * pu4_ctb_left_pu_idx ; UWORD32 * pu4_ctb_top_left_pu_idx ; WORD32 i4_ctb_pu_cnt ; WORD32 cur_ctb_idx ; WORD32 next_ctb_idx ; WORD32 cur_pu_idx ; ps_proc = & ps_codec -> as_process [ ( ps_codec -> i4_num_cores == 1 ) ? 1 : ( ps_codec -> i4_num_cores - 1 ) ] ; cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; next_ctb_idx = ps_codec -> s_parse . i4_next_pu_ctb_cnt ; i4_ctb_pu_cnt = ps_codec -> s_parse . pu4_pic_pu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; cur_pu_idx = ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; pu4_ctb_top_pu_idx = ps_proc -> pu4_pic_pu_idx_top + ( ps_codec -> s_parse . i4_ctb_x * ctb_size / MIN_PU_SIZE ) ; pu4_ctb_left_pu_idx = ps_proc -> pu4_pic_pu_idx_left ; pu4_ctb_top_left_pu_idx = & ps_proc -> u4_ctb_top_left_pu_idx ; { s_mv_ctxt . ps_pps = ps_pps ; s_mv_ctxt . ps_sps = ps_sps ; s_mv_ctxt . ps_slice_hdr = ps_slice_hdr ; s_mv_ctxt . i4_ctb_x = ps_codec -> s_parse . i4_ctb_x ; s_mv_ctxt . i4_ctb_y = ps_codec -> s_parse . i4_ctb_y ; s_mv_ctxt . ps_pu = & ps_codec -> s_parse . ps_pic_pu [ cur_pu_idx ] ; s_mv_ctxt . ps_pic_pu = ps_codec -> s_parse . ps_pic_pu ; s_mv_ctxt . ps_tile = ps_tile ; s_mv_ctxt . pu4_pic_pu_idx_map = ps_proc -> pu4_pic_pu_idx_map ; s_mv_ctxt . pu4_pic_pu_idx = ps_codec -> s_parse . pu4_pic_pu_idx ; s_mv_ctxt . pu1_pic_pu_map = ps_codec -> s_parse . pu1_pic_pu_map ; s_mv_ctxt . i4_ctb_pu_cnt = i4_ctb_pu_cnt ; s_mv_ctxt . i4_ctb_start_pu_idx = cur_pu_idx ; s_mv_ctxt . u1_top_ctb_avail = u1_top_ctb_avail ; s_mv_ctxt . u1_top_rt_ctb_avail = u1_top_rt_ctb_avail ; s_mv_ctxt . u1_top_lt_ctb_avail = u1_top_lt_ctb_avail ; s_mv_ctxt . u1_left_ctb_avail = u1_left_ctb_avail ; } ihevcd_get_mv_ctb ( & s_mv_ctxt , pu4_ctb_top_pu_idx , pu4_ctb_left_pu_idx , pu4_ctb_top_left_pu_idx ) ; } else { WORD32 num_minpu_in_ctb = ( ctb_size / MIN_PU_SIZE ) * ( ctb_size / MIN_PU_SIZE ) ; UWORD8 * pu1_pic_pu_map_ctb = ps_codec -> s_parse . pu1_pic_pu_map + ( ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ps_sps -> i2_pic_wd_in_ctb ) * num_minpu_in_ctb ; process_ctxt_t * ps_proc = & ps_codec -> as_process [ ( ps_codec -> i4_num_cores == 1 ) ? 1 : ( ps_codec -> i4_num_cores - 1 ) ] ; WORD32 row , col ; WORD32 pu_cnt ; WORD32 num_pu_per_ctb ; WORD32 cur_ctb_idx ; WORD32 next_ctb_idx ; WORD32 ctb_start_pu_idx ; UWORD32 * pu4_nbr_pu_idx = ps_proc -> pu4_pic_pu_idx_map ; WORD32 nbr_pu_idx_strd = MAX_CTB_SIZE / MIN_PU_SIZE + 2 ; pu_t * ps_pu ; for ( row = 0 ; row < ctb_size / MIN_PU_SIZE ; row ++ ) { for ( col = 0 ; col < ctb_size / MIN_PU_SIZE ; col ++ ) { pu1_pic_pu_map_ctb [ row * ctb_size / MIN_PU_SIZE + col ] = 0 ; } } cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; next_ctb_idx = ps_codec -> s_parse . i4_next_pu_ctb_cnt ; num_pu_per_ctb = ps_codec -> s_parse . pu4_pic_pu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; ctb_start_pu_idx = ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; ps_pu = & ps_codec -> s_parse . ps_pic_pu [ ctb_start_pu_idx ] ; for ( pu_cnt = 0 ; pu_cnt < num_pu_per_ctb ; pu_cnt ++ , ps_pu ++ ) { UWORD32 cur_pu_idx ; WORD32 pu_ht = ( ps_pu -> b4_ht + 1 ) << 2 ; WORD32 pu_wd = ( ps_pu -> b4_wd + 1 ) << 2 ; cur_pu_idx = ctb_start_pu_idx + pu_cnt ; for ( row = 0 ; row < pu_ht / MIN_PU_SIZE ; row ++ ) for ( col = 0 ; col < pu_wd / MIN_PU_SIZE ; col ++ ) pu4_nbr_pu_idx [ ( 1 + ps_pu -> b4_pos_x + col ) + ( 1 + ps_pu -> b4_pos_y + row ) * nbr_pu_idx_strd ] = cur_pu_idx ; } { WORD32 rows_remaining = ps_sps -> i2_pic_height_in_luma_samples - ( ps_codec -> s_parse . i4_ctb_y << ps_sps -> i1_log2_ctb_size ) ; WORD32 ctb_size_left = MIN ( ctb_size , rows_remaining ) ; ps_proc -> u4_ctb_top_left_pu_idx = ps_proc -> pu4_pic_pu_idx_top [ ( ps_codec -> s_parse . i4_ctb_x * ctb_size / MIN_PU_SIZE ) + ctb_size / MIN_PU_SIZE - 1 ] ; for ( i = 0 ; i < ctb_size / MIN_PU_SIZE ; i ++ ) { ps_proc -> pu4_pic_pu_idx_left [ i ] = pu4_nbr_pu_idx [ ( ctb_size / MIN_PU_SIZE ) + ( i + 1 ) * nbr_pu_idx_strd ] ; ps_proc -> pu4_pic_pu_idx_top [ ( ps_codec -> s_parse . i4_ctb_x * ctb_size / MIN_PU_SIZE ) + i ] = pu4_nbr_pu_idx [ ( ctb_size_left / MIN_PU_SIZE ) * nbr_pu_idx_strd + i + 1 ] ; } } } if ( 0 == ps_codec -> i4_disable_deblk_pic ) { if ( ( 0 == ps_codec -> i4_slice_error ) ) { WORD32 i4_ctb_tu_cnt ; WORD32 cur_ctb_idx , next_ctb_idx ; WORD32 cur_pu_idx ; WORD32 cur_tu_idx ; process_ctxt_t * ps_proc ; ps_proc = & ps_codec -> as_process [ ( ps_codec -> i4_num_cores == 1 ) ? 1 : ( ps_codec -> i4_num_cores - 1 ) ] ; cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; cur_pu_idx = ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; next_ctb_idx = ps_codec -> s_parse . i4_next_tu_ctb_cnt ; if ( 1 == ps_codec -> i4_num_cores ) { i4_ctb_tu_cnt = ps_codec -> s_parse . pu4_pic_tu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx % RESET_TU_BUF_NCTB ] ; cur_tu_idx = ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx % RESET_TU_BUF_NCTB ] ; } else { i4_ctb_tu_cnt = ps_codec -> s_parse . pu4_pic_tu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx ] ; cur_tu_idx = ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx ] ; } ps_codec -> s_parse . s_bs_ctxt . ps_pps = ps_codec -> s_parse . ps_pps ; ps_codec -> s_parse . s_bs_ctxt . ps_sps = ps_codec -> s_parse . ps_sps ; ps_codec -> s_parse . s_bs_ctxt . ps_codec = ps_codec ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_tu_cnt = i4_ctb_tu_cnt ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_x = ps_codec -> s_parse . i4_ctb_x ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_y = ps_codec -> s_parse . i4_ctb_y ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_tile_x = ps_codec -> s_parse . i4_ctb_tile_x ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_tile_y = ps_codec -> s_parse . i4_ctb_tile_y ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_slice_x = ps_codec -> s_parse . i4_ctb_slice_x ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_slice_y = ps_codec -> s_parse . i4_ctb_slice_y ; ps_codec -> s_parse . s_bs_ctxt . ps_tu = & ps_codec -> s_parse . ps_pic_tu [ cur_tu_idx ] ; ps_codec -> s_parse . s_bs_ctxt . ps_pu = & ps_codec -> s_parse . ps_pic_pu [ cur_pu_idx ] ; ps_codec -> s_parse . s_bs_ctxt . pu4_pic_pu_idx_map = ps_proc -> pu4_pic_pu_idx_map ; ps_codec -> s_parse . s_bs_ctxt . i4_next_pu_ctb_cnt = ps_codec -> s_parse . i4_next_pu_ctb_cnt ; ps_codec -> s_parse . s_bs_ctxt . i4_next_tu_ctb_cnt = ps_codec -> s_parse . i4_next_tu_ctb_cnt ; ps_codec -> s_parse . s_bs_ctxt . pu1_slice_idx = ps_codec -> s_parse . pu1_slice_idx ; ps_codec -> s_parse . s_bs_ctxt . ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr ; ps_codec -> s_parse . s_bs_ctxt . ps_tile = ps_codec -> s_parse . ps_tile ; if ( ISLICE == ps_slice_hdr -> i1_slice_type ) { ihevcd_ctb_boundary_strength_islice ( & ps_codec -> s_parse . s_bs_ctxt ) ; } else { ihevcd_ctb_boundary_strength_pbslice ( & ps_codec -> s_parse . s_bs_ctxt ) ; } } if ( 0 != ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ) { WORD32 bs_strd = ( ps_sps -> i2_pic_wd_in_ctb + 1 ) * ( ctb_size * ctb_size / 8 / 16 ) ; UWORD32 * pu4_vert_bs = ( UWORD32 * ) ( ( UWORD8 * ) ps_codec -> s_parse . s_bs_ctxt . pu4_pic_vert_bs + ps_codec -> s_parse . i4_ctb_x * ( ctb_size * ctb_size / 8 / 16 ) + ps_codec -> s_parse . i4_ctb_y * bs_strd ) ; UWORD32 * pu4_horz_bs = ( UWORD32 * ) ( ( UWORD8 * ) ps_codec -> s_parse . s_bs_ctxt . pu4_pic_horz_bs + ps_codec -> s_parse . i4_ctb_x * ( ctb_size * ctb_size / 8 / 16 ) + ps_codec -> s_parse . i4_ctb_y * bs_strd ) ; memset ( pu4_vert_bs , 0 , ( ctb_size / 8 ) * ( ctb_size / 4 ) / 8 * 2 ) ; memset ( pu4_horz_bs , 0 , ( ctb_size / 8 ) * ( ctb_size / 4 ) / 8 * 2 ) ; } } } DATA_SYNC ( ) ; { sps_t * ps_sps = ps_codec -> s_parse . ps_sps ; UWORD8 * pu1_buf ; WORD32 idx ; idx = ( ps_codec -> s_parse . i4_ctb_x ) ; idx += ( ( ps_codec -> s_parse . i4_ctb_y ) * ps_sps -> i2_pic_wd_in_ctb ) ; pu1_buf = ( ps_codec -> pu1_parse_map + idx ) ; * pu1_buf = 1 ; } ps_codec -> s_parse . i4_ctb_tile_x ++ ; ps_codec -> s_parse . i4_ctb_x ++ ; ps_codec -> s_parse . i4_ctb_slice_x ++ ; if ( ps_pps -> i1_tiles_enabled_flag ) { tile_start_ctb_idx = ps_tile -> u1_pos_x + ps_tile -> u1_pos_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; slice_start_ctb_idx = ps_slice_hdr -> i2_ctb_x + ps_slice_hdr -> i2_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; if ( ( slice_start_ctb_idx < tile_start_ctb_idx ) ) { if ( ps_codec -> s_parse . i4_ctb_slice_x == ( ps_tile -> u1_pos_x + ps_tile -> u2_wd ) ) { ps_codec -> s_parse . i4_ctb_slice_y ++ ; ps_codec -> s_parse . i4_ctb_slice_x = ps_tile -> u1_pos_x ; } } else if ( ps_codec -> s_parse . i4_ctb_slice_x == ( ps_tile -> u2_wd ) ) { ps_codec -> s_parse . i4_ctb_slice_y ++ ; ps_codec -> s_parse . i4_ctb_slice_x = 0 ; } } else { if ( ps_codec -> s_parse . i4_ctb_slice_x == ps_tile -> u2_wd ) { ps_codec -> s_parse . i4_ctb_slice_y ++ ; ps_codec -> s_parse . i4_ctb_slice_x = 0 ; } } if ( ps_codec -> s_parse . i4_ctb_tile_x == ( ps_tile -> u2_wd ) ) { ps_codec -> s_parse . i4_ctb_tile_x = 0 ; ps_codec -> s_parse . i4_ctb_x = ps_tile -> u1_pos_x ; ps_codec -> s_parse . i4_ctb_tile_y ++ ; ps_codec -> s_parse . i4_ctb_y ++ ; if ( ps_codec -> s_parse . i4_ctb_tile_y == ( ps_tile -> u2_ht ) ) { ps_codec -> s_parse . i4_ctb_tile_y = 0 ; ps_codec -> s_parse . i4_ctb_tile_x = 0 ; ps_codec -> s_parse . ps_tile ++ ; if ( ( ps_tile -> u2_ht + ps_tile -> u1_pos_y == ps_sps -> i2_pic_ht_in_ctb ) && ( ps_tile -> u2_wd + ps_tile -> u1_pos_x == ps_sps -> i2_pic_wd_in_ctb ) ) { end_of_pic = 1 ; ps_codec -> s_parse . i4_ctb_x = 0 ; ps_codec -> s_parse . i4_ctb_y = ps_sps -> i2_pic_ht_in_ctb ; } else { ps_tile = ps_codec -> s_parse . ps_tile ; ps_codec -> s_parse . i4_ctb_x = ps_tile -> u1_pos_x ; ps_codec -> s_parse . i4_ctb_y = ps_tile -> u1_pos_y ; ps_codec -> s_parse . i4_ctb_tile_y = 0 ; ps_codec -> s_parse . i4_ctb_tile_x = 0 ; ps_codec -> s_parse . i4_ctb_slice_x = ps_tile -> u1_pos_x ; ps_codec -> s_parse . i4_ctb_slice_y = ps_tile -> u1_pos_y ; } } } ps_codec -> s_parse . i4_next_ctb_indx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ps_sps -> i2_pic_wd_in_ctb ; if ( ps_codec -> i4_slice_error ) { slice_header_t * ps_slice_hdr_next = ps_slice_hdr + 1 ; WORD32 next_slice_addr = ps_slice_hdr_next -> i2_ctb_x + ps_slice_hdr_next -> i2_ctb_y * ps_sps -> i2_pic_wd_in_ctb ; if ( ps_codec -> s_parse . i4_next_ctb_indx == next_slice_addr ) end_of_slice_flag = 1 ; } if ( ( 1 == ps_codec -> i4_num_cores ) && ( ps_codec -> s_parse . i4_ctb_tile_x == 0 ) ) { process_ctxt_t * ps_proc = & ps_codec -> as_process [ 0 ] ; ps_proc -> i4_ctb_cnt = ps_proc -> ps_tile -> u2_wd ; ihevcd_process ( ps_proc ) ; } if ( ( UWORD8 * ) ps_codec -> s_parse . s_bitstrm . pu1_buf_max + BITSTRM_OFF_THRS < ( ( UWORD8 * ) ps_codec -> s_parse . s_bitstrm . pu4_buf + ( ps_codec -> s_parse . s_bitstrm . u4_bit_ofst / 8 ) ) ) { if ( 0 == ps_codec -> i4_slice_error ) end_of_slice_flag = 1 ; } if ( end_of_pic ) break ; } while ( ! end_of_slice_flag ) ; <S2SV_StartBug> if ( 0 == end_of_pic ) <S2SV_EndBug> { while ( 1 ) { WORD32 parse_slice_idx ; parse_slice_idx = ps_codec -> s_parse . i4_cur_slice_idx ; parse_slice_idx ++ ; { if ( ( 1 == ps_codec -> i4_num_cores ) || ( 0 != ( parse_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ) ) { ps_codec -> s_parse . i4_cur_slice_idx = parse_slice_idx ; break ; } else { WORD32 ctb_indx = 0 ; while ( ctb_indx != ps_sps -> i4_pic_size_in_ctb ) { WORD32 parse_status = * ( ps_codec -> pu1_parse_map + ctb_indx ) ; volatile WORD32 proc_status = * ( ps_codec -> pu1_proc_map + ctb_indx ) & 1 ; if ( parse_status == proc_status ) ctb_indx ++ ; } ps_codec -> s_parse . i4_cur_slice_idx = parse_slice_idx ; break ; } } } } else { # if FRAME_ILF_PAD if ( FRAME_ILF_PAD && 1 == ps_codec -> i4_num_cores ) { if ( ps_slice_hdr -> i4_abs_pic_order_cnt == 0 ) { DUMP_PRE_ILF ( ps_codec -> as_process [ 0 ] . pu1_cur_pic_luma , ps_codec -> as_process [ 0 ] . pu1_cur_pic_chroma , ps_sps -> i2_pic_width_in_luma_samples , ps_sps -> i2_pic_height_in_luma_samples , ps_codec -> i4_strd ) ; DUMP_BS ( ps_codec -> as_process [ 0 ] . s_bs_ctxt . pu4_pic_vert_bs , ps_codec -> as_process [ 0 ] . s_bs_ctxt . pu4_pic_horz_bs , ps_sps -> i2_pic_wd_in_ctb * ( ctb_size * ctb_size / 8 / 16 ) * ps_sps -> i2_pic_ht_in_ctb , ( ps_sps -> i2_pic_wd_in_ctb + 1 ) * ( ctb_size * ctb_size / 8 / 16 ) * ps_sps -> i2_pic_ht_in_ctb ) ; DUMP_QP ( ps_codec -> as_process [ 0 ] . s_bs_ctxt . pu1_pic_qp , ( ps_sps -> i2_pic_height_in_luma_samples * ps_sps -> i2_pic_width_in_luma_samples ) / ( MIN_CU_SIZE * MIN_CU_SIZE ) ) ; DUMP_QP_CONST_IN_CTB ( ps_codec -> as_process [ 0 ] . s_bs_ctxt . pu1_pic_qp_const_in_ctb , ( ps_sps -> i2_pic_height_in_luma_samples * ps_sps -> i2_pic_width_in_luma_samples ) / ( MIN_CTB_SIZE * MIN_CTB_SIZE ) / 8 ) ; DUMP_NO_LOOP_FILTER ( ps_codec -> as_process [ 0 ] . pu1_pic_no_loop_filter_flag , ( ps_sps -> i2_pic_width_in_luma_samples / MIN_CU_SIZE ) * ( ps_sps -> i2_pic_height_in_luma_samples / MIN_CU_SIZE ) / 8 ) ; DUMP_OFFSETS ( ps_slice_hdr -> i1_beta_offset_div2 , ps_slice_hdr -> i1_tc_offset_div2 , ps_pps -> i1_pic_cb_qp_offset , ps_pps -> i1_pic_cr_qp_offset ) ; } ps_codec -> s_parse . s_deblk_ctxt . ps_pps = ps_codec -> s_parse . ps_pps ; ps_codec -> s_parse . s_deblk_ctxt . ps_sps = ps_codec -> s_parse . ps_sps ; ps_codec -> s_parse . s_deblk_ctxt . ps_codec = ps_codec ; ps_codec -> s_parse . s_deblk_ctxt . ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr ; ps_codec -> s_parse . s_deblk_ctxt . is_chroma_yuv420sp_vu = ( ps_codec -> e_ref_chroma_fmt == IV_YUV_420SP_VU ) ; ps_codec -> s_parse . s_sao_ctxt . ps_pps = ps_codec -> s_parse . ps_pps ; ps_codec -> s_parse . s_sao_ctxt . ps_sps = ps_codec -> s_parse . ps_sps ; ps_codec -> s_parse . s_sao_ctxt . ps_codec = ps_codec ; ps_codec -> s_parse . s_sao_ctxt . ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr ; ihevcd_ilf_pad_frame ( & ps_codec -> s_parse . s_deblk_ctxt , & ps_codec -> s_parse . s_sao_ctxt ) ; } # endif ps_codec -> s_parse . i4_end_of_frame = 1 ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { ret = <S2SV_ModStart> ] ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } <S2SV_ModStart> } } { ret = <S2SV_ModStart> ] ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } <S2SV_ModStart> default_ctxt ) { ret = <S2SV_ModStart> ] ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } <S2SV_ModStart> } else { ret = <S2SV_ModStart> au1_ctxt_models_sync ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } <S2SV_ModStart> end_of_slice_flag ) ; ps_codec -> i4_slice_error = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21335\n\n```\nCWE-287 static ngx_int_t ngx_http_auth_spnego_handler ( ngx_http_request_t * r ) { ngx_int_t ret = NGX_DECLINED ; ngx_http_auth_spnego_ctx_t * ctx ; ngx_http_auth_spnego_loc_conf_t * alcf ; alcf = ngx_http_get_module_loc_conf ( r , ngx_http_auth_spnego_module ) ; if ( alcf -> protect == 0 ) { return NGX_DECLINED ; } ctx = ngx_http_get_module_ctx ( r , ngx_http_auth_spnego_module ) ; if ( NULL == ctx ) { ctx = ngx_palloc ( r -> pool , sizeof ( ngx_http_auth_spnego_ctx_t ) ) ; if ( NULL == ctx ) { return NGX_HTTP_INTERNAL_SERVER_ERROR ; } ctx -> token . len = 0 ; ctx -> token . data = NULL ; ctx -> head = 0 ; ctx -> ret = NGX_HTTP_UNAUTHORIZED ; ngx_http_set_ctx ( r , ctx , ngx_http_auth_spnego_module ) ; } spnego_debug3 ( \"SSO<S2SV_blank>auth<S2SV_blank>handling<S2SV_blank>IN:<S2SV_blank>token.len=%d,<S2SV_blank>head=%d,<S2SV_blank>ret=%d\" , ctx -> token . len , ctx -> head , ctx -> ret ) ; if ( ctx -> token . len && ctx -> head ) { spnego_debug1 ( \"Found<S2SV_blank>token<S2SV_blank>and<S2SV_blank>head,<S2SV_blank>returning<S2SV_blank>%d\" , ctx -> ret ) ; return ctx -> ret ; } if ( NULL != r -> headers_in . user . data ) { spnego_debug0 ( \"User<S2SV_blank>header<S2SV_blank>set\" ) ; return NGX_OK ; } spnego_debug0 ( \"Begin<S2SV_blank>auth\" ) ; if ( alcf -> allow_basic ) { spnego_debug0 ( \"Detect<S2SV_blank>basic<S2SV_blank>auth\" ) ; ret = ngx_http_auth_basic_user ( r ) ; if ( NGX_OK == ret ) { spnego_debug0 ( \"Basic<S2SV_blank>auth<S2SV_blank>credentials<S2SV_blank>supplied<S2SV_blank>by<S2SV_blank>client\" ) ; <S2SV_StartBug> if ( NGX_DECLINED == ngx_http_auth_spnego_basic ( r , ctx , alcf ) ) { <S2SV_EndBug> spnego_debug0 ( \"Basic<S2SV_blank>auth<S2SV_blank>failed\" ) ; if ( NGX_ERROR == ngx_http_auth_spnego_headers_basic_only ( r , ctx , alcf ) ) { spnego_debug0 ( \"Error<S2SV_blank>setting<S2SV_blank>headers\" ) ; return ( ctx -> ret = NGX_HTTP_INTERNAL_SERVER_ERROR ) ; } return ( ctx -> ret = NGX_HTTP_UNAUTHORIZED ) ; } if ( ! ngx_spnego_authorized_principal ( r , & r -> headers_in . user , alcf ) ) { spnego_debug0 ( \"User<S2SV_blank>not<S2SV_blank>authorized\" ) ; return ( ctx -> ret = NGX_HTTP_FORBIDDEN ) ; } spnego_debug0 ( \"Basic<S2SV_blank>auth<S2SV_blank>succeeded\" ) ; return ( ctx -> ret = NGX_OK ) ; } } spnego_debug0 ( \"Detect<S2SV_blank>SPNEGO<S2SV_blank>token\" ) ; ret = ngx_http_auth_spnego_token ( r , ctx ) ; if ( NGX_OK == ret ) { spnego_debug0 ( \"Client<S2SV_blank>sent<S2SV_blank>a<S2SV_blank>reasonable<S2SV_blank>Negotiate<S2SV_blank>header\" ) ; ret = ngx_http_auth_spnego_auth_user_gss ( r , ctx , alcf ) ; if ( NGX_ERROR == ret ) { spnego_debug0 ( \"GSSAPI<S2SV_blank>failed\" ) ; return ( ctx -> ret = NGX_HTTP_INTERNAL_SERVER_ERROR ) ; } if ( NGX_DECLINED == ret ) { spnego_debug0 ( \"GSSAPI<S2SV_blank>failed\" ) ; if ( ! alcf -> allow_basic ) { return ( ctx -> ret = NGX_HTTP_FORBIDDEN ) ; } if ( NGX_ERROR == ngx_http_auth_spnego_headers_basic_only ( r , ctx , alcf ) ) { spnego_debug0 ( \"Error<S2SV_blank>setting<S2SV_blank>headers\" ) ; return ( ctx -> ret = NGX_HTTP_INTERNAL_SERVER_ERROR ) ; } return ( ctx -> ret = NGX_HTTP_UNAUTHORIZED ) ; } if ( ! ngx_spnego_authorized_principal ( r , & r -> headers_in . user , alcf ) ) { spnego_debug0 ( \"User<S2SV_blank>not<S2SV_blank>authorized\" ) ; return ( ctx -> ret = NGX_HTTP_FORBIDDEN ) ; } spnego_debug0 ( \"GSSAPI<S2SV_blank>auth<S2SV_blank>succeeded\" ) ; } ngx_str_t * token_out_b64 = NULL ; switch ( ret ) { case NGX_DECLINED : ctx -> ret = NGX_HTTP_UNAUTHORIZED ; break ; case NGX_OK : ctx -> ret = NGX_OK ; token_out_b64 = & ctx -> token_out_b64 ; break ; case NGX_ERROR : default : ctx -> ret = NGX_HTTP_INTERNAL_SERVER_ERROR ; break ; } if ( NGX_ERROR == ngx_http_auth_spnego_headers ( r , ctx , token_out_b64 , alcf ) ) { spnego_debug0 ( \"Error<S2SV_blank>setting<S2SV_blank>headers\" ) ; ctx -> ret = NGX_HTTP_INTERNAL_SERVER_ERROR ; } spnego_debug3 ( \"SSO<S2SV_blank>auth<S2SV_blank>handling<S2SV_blank>OUT:<S2SV_blank>token.len=%d,<S2SV_blank>head=%d,<S2SV_blank>ret=%d\" , ctx -> token . len , ctx -> head , ctx -> ret ) ; return ctx -> ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( NGX_OK != <S2SV_ModEnd> ngx_http_auth_spnego_basic ( r\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13024\n\n```\nCWE-125 static int mobility_opt_print ( netdissect_options * ndo , const u_char * bp , const unsigned len ) { unsigned i , optlen ; for ( i = 0 ; i < len ; i += optlen ) { ND_TCHECK ( bp [ i ] ) ; if ( bp [ i ] == IP6MOPT_PAD1 ) optlen = 1 ; else { if ( i + 1 < len ) { ND_TCHECK ( bp [ i + 1 ] ) ; optlen = bp [ i + 1 ] + 2 ; } else goto trunc ; } if ( i + optlen > len ) goto trunc ; ND_TCHECK ( bp [ i + optlen ] ) ; switch ( bp [ i ] ) { case IP6MOPT_PAD1 : ND_PRINT ( ( ndo , \"(pad1)\" ) ) ; break ; case IP6MOPT_PADN : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(padn:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(padn)\" ) ) ; break ; case IP6MOPT_REFRESH : if ( len - i < IP6MOPT_REFRESH_MINLEN ) { ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ; ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>%u)\" , EXTRACT_16BITS ( & bp [ i + 2 ] ) << 2 ) ) ; break ; case IP6MOPT_ALTCOA : if ( len - i < IP6MOPT_ALTCOA_MINLEN ) { ND_PRINT ( ( ndo , \"(altcoa:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(alt-CoA:<S2SV_blank>%s)\" , ip6addr_string ( ndo , & bp [ i + 2 ] ) ) ) ; break ; case IP6MOPT_NONCEID : if ( len - i < IP6MOPT_NONCEID_MINLEN ) { ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>ho=0x%04x<S2SV_blank>co=0x%04x)\" , <S2SV_EndBug> EXTRACT_16BITS ( & bp [ i + 2 ] ) , EXTRACT_16BITS ( & bp [ i + 4 ] ) ) ) ; break ; case IP6MOPT_AUTH : if ( len - i < IP6MOPT_AUTH_MINLEN ) { ND_PRINT ( ( ndo , \"(auth:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(auth)\" ) ) ; break ; default : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(sopt_type<S2SV_blank>%u:<S2SV_blank>trunc)\" , bp [ i ] ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(type-0x%02x:<S2SV_blank>len=%u)\" , bp [ i ] , bp [ i + 1 ] ) ) ; break ; } } return 0 ; trunc : return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ; ND_TCHECK_16BITS ( & bp [ i + 4 ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static unsigned long vp8_priv_sz ( const vpx_codec_dec_cfg_t * si , vpx_codec_flags_t flags ) { ( void ) si ; <S2SV_StartBug> return sizeof ( vpx_codec_alg_priv_t ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) si ; ( void ) flags ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0206\n\n```\nCWE-119 static int dtls1_process_record ( SSL * s ) { int i , al ; int enc_err ; SSL_SESSION * sess ; SSL3_RECORD * rr ; unsigned int mac_size ; unsigned char md [ EVP_MAX_MD_SIZE ] ; rr = & ( s -> s3 -> rrec ) ; sess = s -> session ; rr -> input = & ( s -> packet [ DTLS1_RT_HEADER_LENGTH ] ) ; if ( rr -> length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_ENCRYPTED_LENGTH_TOO_LONG ) ; goto f_err ; } rr -> data = rr -> input ; rr -> orig_len = rr -> length ; enc_err = s -> method -> ssl3_enc -> enc ( s , 0 ) ; if ( enc_err == 0 ) { rr -> length = 0 ; s -> packet_length = 0 ; goto err ; } # ifdef TLS_DEBUG printf ( \"dec<S2SV_blank>%d\\\\n\" , rr -> length ) ; { unsigned int z ; for ( z = 0 ; z < rr -> length ; z ++ ) printf ( \"%02X%c\" , rr -> data [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } printf ( \"\\\\n\" ) ; # endif if ( ( sess != NULL ) && ( s -> enc_read_ctx != NULL ) && ( EVP_MD_CTX_md ( s -> read_hash ) != NULL ) ) { unsigned char * mac = NULL ; unsigned char mac_tmp [ EVP_MAX_MD_SIZE ] ; mac_size = EVP_MD_CTX_size ( s -> read_hash ) ; OPENSSL_assert ( mac_size <= EVP_MAX_MD_SIZE ) ; if ( rr -> orig_len < mac_size || ( EVP_CIPHER_CTX_mode ( s -> enc_read_ctx ) == EVP_CIPH_CBC_MODE && rr -> orig_len < mac_size + 1 ) ) { al = SSL_AD_DECODE_ERROR ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } if ( EVP_CIPHER_CTX_mode ( s -> enc_read_ctx ) == EVP_CIPH_CBC_MODE ) { mac = mac_tmp ; ssl3_cbc_copy_mac ( mac_tmp , rr , mac_size ) ; rr -> length -= mac_size ; } else { rr -> length -= mac_size ; mac = & rr -> data [ rr -> length ] ; } i = s -> method -> ssl3_enc -> mac ( s , md , 0 ) ; if ( i < 0 || mac == NULL || CRYPTO_memcmp ( md , mac , ( size_t ) mac_size ) != 0 ) enc_err = - 1 ; if ( rr -> length > SSL3_RT_MAX_COMPRESSED_LENGTH + mac_size ) enc_err = - 1 ; } if ( enc_err < 0 ) { rr -> length = 0 ; s -> packet_length = 0 ; goto err ; } if ( s -> expand != NULL ) { if ( rr -> length > SSL3_RT_MAX_COMPRESSED_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_COMPRESSED_LENGTH_TOO_LONG ) ; goto f_err ; } if ( ! ssl3_do_uncompress ( s ) ) { al = SSL_AD_DECOMPRESSION_FAILURE ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_BAD_DECOMPRESSION ) ; goto f_err ; } } if ( rr -> length > SSL3_RT_MAX_PLAIN_LENGTH ) { al = SSL_AD_RECORD_OVERFLOW ; SSLerr ( SSL_F_DTLS1_PROCESS_RECORD , SSL_R_DATA_LENGTH_TOO_LONG ) ; goto f_err ; } rr -> off = 0 ; s -> packet_length = 0 ; <S2SV_StartBug> dtls1_record_bitmap_update ( s , & ( s -> d1 -> bitmap ) ) ; <S2SV_EndBug> return ( 1 ) ; f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> return ( 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7537\n\n```\nCWE-125 static Image * ReadPDBImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { unsigned char attributes , tag [ 3 ] ; Image * image ; IndexPacket index ; MagickBooleanType status ; PDBImage pdb_image ; PDBInfo pdb_info ; register IndexPacket * indexes ; register ssize_t x ; register PixelPacket * q ; register unsigned char * p ; size_t bits_per_pixel , num_pad_bytes , one , packets ; ssize_t count , img_offset , comment_offset = 0 , y ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , sizeof ( pdb_info . name ) , ( unsigned char * ) pdb_info . name ) ; if ( count != sizeof ( pdb_info . name ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; pdb_info . attributes = ( short ) ReadBlobMSBShort ( image ) ; pdb_info . version = ( short ) ReadBlobMSBShort ( image ) ; pdb_info . create_time = ReadBlobMSBLong ( image ) ; pdb_info . modify_time = ReadBlobMSBLong ( image ) ; pdb_info . archive_time = ReadBlobMSBLong ( image ) ; pdb_info . modify_number = ReadBlobMSBLong ( image ) ; pdb_info . application_info = ReadBlobMSBLong ( image ) ; pdb_info . sort_info = ReadBlobMSBLong ( image ) ; ( void ) ReadBlob ( image , 4 , ( unsigned char * ) pdb_info . type ) ; ( void ) ReadBlob ( image , 4 , ( unsigned char * ) pdb_info . id ) ; pdb_info . seed = ReadBlobMSBLong ( image ) ; pdb_info . next_record = ReadBlobMSBLong ( image ) ; pdb_info . number_records = ( short ) ReadBlobMSBShort ( image ) ; if ( ( memcmp ( pdb_info . type , \"vIMG\" , 4 ) != 0 ) || ( memcmp ( pdb_info . id , \"View\" , 4 ) != 0 ) ) if ( pdb_info . next_record != 0 ) ThrowReaderException ( CoderError , \"MultipleRecordListNotSupported\" ) ; img_offset = ( ssize_t ) ( ( int ) ReadBlobMSBLong ( image ) ) ; attributes = ( unsigned char ) ( ( int ) ReadBlobByte ( image ) ) ; ( void ) attributes ; count = ReadBlob ( image , 3 , ( unsigned char * ) tag ) ; if ( count != 3 || memcmp ( tag , \"\\\\x6f\\\\x80\\\\x00\" , 3 ) != 0 ) ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; if ( pdb_info . number_records > 1 ) { comment_offset = ( ssize_t ) ( ( int ) ReadBlobMSBLong ( image ) ) ; attributes = ( unsigned char ) ( ( int ) ReadBlobByte ( image ) ) ; count = ReadBlob ( image , 3 , ( unsigned char * ) tag ) ; if ( count != 3 || memcmp ( tag , \"\\\\x6f\\\\x80\\\\x01\" , 3 ) != 0 ) ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } num_pad_bytes = ( size_t ) ( img_offset - TellBlob ( image ) ) ; while ( num_pad_bytes -- != 0 ) { int c ; c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; } count = ReadBlob ( image , sizeof ( pdb_image . name ) , ( unsigned char * ) pdb_image . name ) ; if ( count != sizeof ( pdb_image . name ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; pdb_image . version = ReadBlobByte ( image ) ; pdb_image . type = ( unsigned char ) ReadBlobByte ( image ) ; pdb_image . reserved_1 = ReadBlobMSBLong ( image ) ; pdb_image . note = ReadBlobMSBLong ( image ) ; pdb_image . x_last = ( short ) ReadBlobMSBShort ( image ) ; pdb_image . y_last = ( short ) ReadBlobMSBShort ( image ) ; pdb_image . reserved_2 = ReadBlobMSBLong ( image ) ; pdb_image . x_anchor = ReadBlobMSBShort ( image ) ; pdb_image . y_anchor = ReadBlobMSBShort ( image ) ; pdb_image . width = ( short ) ReadBlobMSBShort ( image ) ; pdb_image . height = ( short ) ReadBlobMSBShort ( image ) ; image -> columns = ( size_t ) pdb_image . width ; image -> rows = ( size_t ) pdb_image . height ; image -> depth = 8 ; image -> storage_class = PseudoClass ; bits_per_pixel = pdb_image . type == 0 ? 2UL : pdb_image . type == 2 ? 4UL : 1UL ; one = 1 ; if ( AcquireImageColormap ( image , one << bits_per_pixel ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } packets = ( bits_per_pixel * image -> columns + 7 ) / 8 ; <S2SV_StartBug> pixels = ( unsigned char * ) AcquireQuantumMemory ( packets + 256UL , image -> rows * <S2SV_EndBug> sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; switch ( pdb_image . version & 0x07 ) { case 0 : { image -> compression = NoCompression ; count = ( ssize_t ) ReadBlob ( image , packets * image -> rows , pixels ) ; break ; } case 1 : { image -> compression = RLECompression ; if ( ! DecodeImage ( image , pixels , packets * image -> rows ) ) ThrowReaderException ( CorruptImageError , \"RLEDecoderError\" ) ; break ; } default : ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompressionType\" ) ; } p = pixels ; switch ( bits_per_pixel ) { case 1 : { int bit ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( IndexPacket ) ( * p & ( 0x80 >> bit ) ? 0x00 : 0x01 ) ; SetPixelIndex ( indexes + x + bit , index ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } ( void ) SyncImage ( image ) ; break ; } case 2 : { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns - 3 ; x += 4 ) { index = ConstrainColormapIndex ( image , 3UL - ( ( * p >> 6 ) & 0x03 ) ) ; SetPixelIndex ( indexes + x , index ) ; index = ConstrainColormapIndex ( image , 3UL - ( ( * p >> 4 ) & 0x03 ) ) ; SetPixelIndex ( indexes + x + 1 , index ) ; index = ConstrainColormapIndex ( image , 3UL - ( ( * p >> 2 ) & 0x03 ) ) ; SetPixelIndex ( indexes + x + 2 , index ) ; index = ConstrainColormapIndex ( image , 3UL - ( ( * p ) & 0x03 ) ) ; SetPixelIndex ( indexes + x + 3 , index ) ; p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } ( void ) SyncImage ( image ) ; break ; } case 4 : { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns - 1 ; x += 2 ) { index = ConstrainColormapIndex ( image , 15UL - ( ( * p >> 4 ) & 0x0f ) ) ; SetPixelIndex ( indexes + x , index ) ; index = ConstrainColormapIndex ( image , 15UL - ( ( * p ) & 0x0f ) ) ; SetPixelIndex ( indexes + x + 1 , index ) ; p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } ( void ) SyncImage ( image ) ; break ; } default : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; if ( pdb_info . number_records > 1 ) { char * comment ; int c ; register char * p ; size_t length ; num_pad_bytes = ( size_t ) ( comment_offset - TellBlob ( image ) ) ; while ( num_pad_bytes -- ) ReadBlobByte ( image ) ; c = ReadBlobByte ( image ) ; length = MaxTextExtent ; comment = AcquireString ( ( char * ) NULL ) ; for ( p = comment ; c != EOF ; p ++ ) { if ( ( size_t ) ( p - comment + MaxTextExtent ) >= length ) { * p = '\\\\0' ; length <<= 1 ; length += MaxTextExtent ; comment = ( char * ) ResizeQuantumMemory ( comment , length + MaxTextExtent , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) break ; p = comment + strlen ( comment ) ; } * p = c ; c = ReadBlobByte ( image ) ; } * p = '\\\\0' ; if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) SetImageProperty ( image , \"comment\" , comment ) ; comment = DestroyString ( comment ) ; } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( packets + 257UL <S2SV_ModEnd> , image ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5550\n\n```\nCWE-200 static void pipe_advance ( struct iov_iter * i , size_t size ) { struct pipe_inode_info * pipe = i -> pipe ; <S2SV_StartBug> struct pipe_buffer * buf ; <S2SV_EndBug> int idx = i -> idx ; size_t off = i -> iov_offset , orig_sz ; if ( unlikely ( i -> count < size ) ) size = i -> count ; <S2SV_StartBug> orig_sz = size ; <S2SV_EndBug> if ( size ) { <S2SV_StartBug> if ( off ) <S2SV_EndBug> <S2SV_StartBug> size += off - pipe -> bufs [ idx ] . offset ; <S2SV_EndBug> while ( 1 ) { buf = & pipe -> bufs [ idx ] ; <S2SV_StartBug> if ( size <= buf -> len ) <S2SV_EndBug> break ; <S2SV_StartBug> size -= buf -> len ; <S2SV_EndBug> idx = next_idx ( idx , pipe ) ; } <S2SV_StartBug> buf -> len = size ; <S2SV_EndBug> i -> idx = idx ; <S2SV_StartBug> off = i -> iov_offset = buf -> offset + size ; <S2SV_EndBug> } if ( off ) idx = next_idx ( idx , pipe ) ; if ( pipe -> nrbufs ) { int unused = ( pipe -> curbuf + pipe -> nrbufs ) & ( pipe -> buffers - 1 ) ; while ( idx != unused ) { pipe_buf_release ( pipe , & pipe -> bufs [ idx ] ) ; idx = next_idx ( idx , pipe ) ; pipe -> nrbufs -- ; } } <S2SV_StartBug> i -> count -= orig_sz ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pipe ; <S2SV_ModEnd> if ( unlikely <S2SV_ModStart> -> count ; <S2SV_ModEnd> if ( size <S2SV_ModStart> size ) { struct pipe_buffer * buf ; size_t off = i -> iov_offset , left = size ; int idx = i -> idx ; <S2SV_ModStart> ( off ) left <S2SV_ModEnd> += off - <S2SV_ModStart> ; if ( left <S2SV_ModEnd> <= buf -> <S2SV_ModStart> ) break ; left <S2SV_ModEnd> -= buf -> <S2SV_ModStart> ) ; } <S2SV_ModEnd> i -> idx <S2SV_ModStart> = idx ; <S2SV_ModEnd> i -> iov_offset <S2SV_ModStart> -> offset + left ; <S2SV_ModEnd> } i -> <S2SV_ModStart> -> count -= size ; pipe_truncate ( i ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10764\n\n```\nCWE-119 static int cqspi_setup_flash ( struct cqspi_st * cqspi , struct device_node * np ) { struct platform_device * pdev = cqspi -> pdev ; struct device * dev = & pdev -> dev ; struct cqspi_flash_pdata * f_pdata ; struct spi_nor * nor ; struct mtd_info * mtd ; unsigned int cs ; int i , ret ; for_each_available_child_of_node ( dev -> of_node , np ) { if ( of_property_read_u32 ( np , \"reg\" , & cs ) ) { dev_err ( dev , \"Couldn\\'t<S2SV_blank>determine<S2SV_blank>chip<S2SV_blank>select.\\\\n\" ) ; goto err ; } <S2SV_StartBug> if ( cs > CQSPI_MAX_CHIPSELECT ) { <S2SV_EndBug> dev_err ( dev , \"Chip<S2SV_blank>select<S2SV_blank>%d<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range.\\\\n\" , cs ) ; goto err ; } f_pdata = & cqspi -> f_pdata [ cs ] ; f_pdata -> cqspi = cqspi ; f_pdata -> cs = cs ; ret = cqspi_of_get_flash_pdata ( pdev , f_pdata , np ) ; if ( ret ) goto err ; nor = & f_pdata -> nor ; mtd = & nor -> mtd ; mtd -> priv = nor ; nor -> dev = dev ; spi_nor_set_flash_node ( nor , np ) ; nor -> priv = f_pdata ; nor -> read_reg = cqspi_read_reg ; nor -> write_reg = cqspi_write_reg ; nor -> read = cqspi_read ; nor -> write = cqspi_write ; nor -> erase = cqspi_erase ; nor -> prepare = cqspi_prep ; nor -> unprepare = cqspi_unprep ; mtd -> name = devm_kasprintf ( dev , GFP_KERNEL , \"%s.%d\" , dev_name ( dev ) , cs ) ; if ( ! mtd -> name ) { ret = - ENOMEM ; goto err ; } ret = spi_nor_scan ( nor , NULL , SPI_NOR_QUAD ) ; if ( ret ) goto err ; ret = mtd_device_register ( mtd , NULL , 0 ) ; if ( ret ) goto err ; f_pdata -> registered = true ; } return 0 ; err : for ( i = 0 ; i < CQSPI_MAX_CHIPSELECT ; i ++ ) if ( cqspi -> f_pdata [ i ] . registered ) mtd_device_unregister ( & cqspi -> f_pdata [ i ] . nor . mtd ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( cs >= <S2SV_ModEnd> CQSPI_MAX_CHIPSELECT ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3601\n\n```\nCWE-189 int kvm_iommu_map_pages ( struct kvm * kvm , struct kvm_memory_slot * slot ) { gfn_t gfn , end_gfn ; pfn_t pfn ; int r = 0 ; struct iommu_domain * domain = kvm -> arch . iommu_domain ; int flags ; if ( ! domain ) return 0 ; gfn = slot -> base_gfn ; end_gfn = gfn + slot -> npages ; flags = IOMMU_READ ; if ( ! ( slot -> flags & KVM_MEM_READONLY ) ) flags |= IOMMU_WRITE ; if ( ! kvm -> arch . iommu_noncoherent ) flags |= IOMMU_CACHE ; while ( gfn < end_gfn ) { unsigned long page_size ; if ( iommu_iova_to_phys ( domain , gfn_to_gpa ( gfn ) ) ) { gfn += 1 ; continue ; } page_size = kvm_host_page_size ( kvm , gfn ) ; while ( ( gfn + ( page_size >> PAGE_SHIFT ) ) > end_gfn ) page_size >>= 1 ; while ( ( gfn << PAGE_SHIFT ) & ( page_size - 1 ) ) page_size >>= 1 ; while ( __gfn_to_hva_memslot ( slot , gfn ) & ( page_size - 1 ) ) page_size >>= 1 ; pfn = kvm_pin_pages ( slot , gfn , page_size ) ; if ( is_error_noslot_pfn ( pfn ) ) { gfn += 1 ; continue ; } r = iommu_map ( domain , gfn_to_gpa ( gfn ) , pfn_to_hpa ( pfn ) , page_size , flags ) ; if ( r ) { printk ( KERN_ERR \"kvm_iommu_map_address:\" \"iommu<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>map<S2SV_blank>pfn=%llx\\\\n\" , pfn ) ; <S2SV_StartBug> goto unmap_pages ; <S2SV_EndBug> } gfn += page_size >> PAGE_SHIFT ; } return 0 ; unmap_pages : <S2SV_StartBug> kvm_iommu_put_pages ( kvm , slot -> base_gfn , gfn ) ; <S2SV_EndBug> return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pfn ) ; kvm_unpin_pages ( kvm , pfn , page_size ) ; <S2SV_ModStart> base_gfn , gfn - slot -> base_gfn\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18270\n\n```\nCWE-000 <S2SV_StartBug> struct key * find_keyring_by_name ( const char * name , bool skip_perm_check ) <S2SV_EndBug> { struct key * keyring ; int bucket ; if ( ! name ) return ERR_PTR ( - EINVAL ) ; bucket = keyring_hash ( name ) ; read_lock ( & keyring_name_lock ) ; if ( keyring_name_hash [ bucket ] . next ) { list_for_each_entry ( keyring , & keyring_name_hash [ bucket ] , name_link ) { if ( ! kuid_has_mapping ( current_user_ns ( ) , keyring -> user -> uid ) ) continue ; if ( test_bit ( KEY_FLAG_REVOKED , & keyring -> flags ) ) continue ; if ( strcmp ( keyring -> description , name ) != 0 ) continue ; <S2SV_StartBug> if ( ! skip_perm_check && <S2SV_EndBug> key_permission ( make_key_ref ( keyring , 0 ) , KEY_NEED_SEARCH ) < 0 ) <S2SV_StartBug> continue ; <S2SV_EndBug> if ( ! refcount_inc_not_zero ( & keyring -> usage ) ) continue ; keyring -> last_used_at = current_kernel_time ( ) . tv_sec ; goto out ; } } keyring = ERR_PTR ( - ENOKEY ) ; out : read_unlock ( & keyring_name_lock ) ; return keyring ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> name , bool uid_keyring <S2SV_ModEnd> ) { struct <S2SV_ModStart> ; if ( uid_keyring ) { if ( ! test_bit ( KEY_FLAG_UID_KEYRING , & keyring -> flags ) ) continue ; } else { if ( <S2SV_ModEnd> key_permission ( make_key_ref <S2SV_ModStart> ) continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8929\n\n```\nCWE-416 int yr_execute_code ( YR_RULES * rules , YR_SCAN_CONTEXT * context , int timeout , time_t start_time ) { int64_t mem [ MEM_SIZE ] ; int32_t sp = 0 ; uint8_t * ip = rules -> code_start ; YR_VALUE args [ MAX_FUNCTION_ARGS ] ; YR_VALUE * stack ; YR_VALUE r1 ; YR_VALUE r2 ; YR_VALUE r3 ; # ifdef PROFILING_ENABLED YR_RULE * current_rule = NULL ; # endif YR_RULE * rule ; YR_MATCH * match ; YR_OBJECT_FUNCTION * function ; <S2SV_StartBug> char * identifier ; <S2SV_EndBug> char * args_fmt ; int i ; int found ; int count ; int result = ERROR_SUCCESS ; int stop = FALSE ; int cycle = 0 ; int tidx = context -> tidx ; int stack_size ; # ifdef PROFILING_ENABLED clock_t start = clock ( ) ; # endif yr_get_configuration ( YR_CONFIG_STACK_SIZE , ( void * ) & stack_size ) ; stack = ( YR_VALUE * ) yr_malloc ( stack_size * sizeof ( YR_VALUE ) ) ; if ( stack == NULL ) <S2SV_StartBug> return ERROR_INSUFFICIENT_MEMORY ; <S2SV_EndBug> while ( ! stop ) { switch ( * ip ) { case OP_NOP : break ; case OP_HALT : assert ( sp == 0 ) ; stop = TRUE ; break ; case OP_PUSH : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; push ( r1 ) ; break ; case OP_POP : pop ( r1 ) ; break ; case OP_CLEAR_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; mem [ r1 . i ] = 0 ; break ; case OP_ADD_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; if ( ! is_undef ( r2 ) ) mem [ r1 . i ] += r2 . i ; break ; case OP_INCR_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; mem [ r1 . i ] ++ ; break ; case OP_PUSH_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . i = mem [ r1 . i ] ; push ( r1 ) ; break ; case OP_POP_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; mem [ r1 . i ] = r2 . i ; break ; case OP_SWAPUNDEF : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; if ( is_undef ( r2 ) ) { r1 . i = mem [ r1 . i ] ; push ( r1 ) ; } else { push ( r2 ) ; } break ; case OP_JNUNDEF : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( ! is_undef ( r1 ) , ip ) ; break ; case OP_JLE : pop ( r2 ) ; pop ( r1 ) ; push ( r1 ) ; push ( r2 ) ; ip = jmp_if ( r1 . i <= r2 . i , ip ) ; break ; case OP_JTRUE : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( ! is_undef ( r1 ) && r1 . i , ip ) ; break ; case OP_JFALSE : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( is_undef ( r1 ) || ! r1 . i , ip ) ; break ; case OP_AND : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) || is_undef ( r2 ) ) r1 . i = 0 ; else r1 . i = r1 . i && r2 . i ; push ( r1 ) ; break ; case OP_OR : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) ) { push ( r2 ) ; } else if ( is_undef ( r2 ) ) { push ( r1 ) ; } else { r1 . i = r1 . i || r2 . i ; push ( r1 ) ; } break ; case OP_NOT : pop ( r1 ) ; if ( is_undef ( r1 ) ) r1 . i = UNDEFINED ; else r1 . i = ! r1 . i ; push ( r1 ) ; break ; case OP_MOD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r2 . i != 0 ) r1 . i = r1 . i % r2 . i ; else r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_SHR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i >> r2 . i ; push ( r1 ) ; break ; case OP_SHL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i << r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_NOT : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = ~ r1 . i ; push ( r1 ) ; break ; case OP_BITWISE_AND : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i & r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_OR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i | r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_XOR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i ^ r2 . i ; push ( r1 ) ; break ; case OP_PUSH_RULE : rule = * ( YR_RULE * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . i = rule -> t_flags [ tidx ] & RULE_TFLAGS_MATCH ? 1 : 0 ; push ( r1 ) ; break ; case OP_INIT_RULE : # ifdef PROFILING_ENABLED current_rule = * ( YR_RULE * * ) ( ip + 1 ) ; # endif ip += sizeof ( uint64_t ) ; break ; case OP_MATCH_RULE : pop ( r1 ) ; rule = * ( YR_RULE * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; if ( ! is_undef ( r1 ) && r1 . i ) rule -> t_flags [ tidx ] |= RULE_TFLAGS_MATCH ; else if ( RULE_IS_GLOBAL ( rule ) ) rule -> ns -> t_flags [ tidx ] |= NAMESPACE_TFLAGS_UNSATISFIED_GLOBAL ; # ifdef PROFILING_ENABLED rule -> clock_ticks += clock ( ) - start ; start = clock ( ) ; # endif <S2SV_StartBug> break ; <S2SV_EndBug> case OP_OBJ_LOAD : identifier = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . o = ( YR_OBJECT * ) yr_hash_table_lookup ( context -> objects_table , identifier , NULL ) ; assert ( r1 . o != NULL ) ; push ( r1 ) ; break ; case OP_OBJ_FIELD : identifier = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . o = yr_object_lookup_field ( r1 . o , identifier ) ; assert ( r1 . o != NULL ) ; push ( r1 ) ; break ; case OP_OBJ_VALUE : pop ( r1 ) ; ensure_defined ( r1 ) ; switch ( r1 . o -> type ) { case OBJECT_TYPE_INTEGER : r1 . i = ( ( YR_OBJECT_INTEGER * ) r1 . o ) -> value ; break ; case OBJECT_TYPE_FLOAT : if ( isnan ( ( ( YR_OBJECT_DOUBLE * ) r1 . o ) -> value ) ) r1 . i = UNDEFINED ; else r1 . d = ( ( YR_OBJECT_DOUBLE * ) r1 . o ) -> value ; break ; case OBJECT_TYPE_STRING : if ( ( ( YR_OBJECT_STRING * ) r1 . o ) -> value == NULL ) r1 . i = UNDEFINED ; else r1 . p = ( ( YR_OBJECT_STRING * ) r1 . o ) -> value ; break ; default : assert ( FALSE ) ; } push ( r1 ) ; break ; case OP_INDEX_ARRAY : pop ( r1 ) ; pop ( r2 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; assert ( r2 . o -> type == OBJECT_TYPE_ARRAY ) ; r1 . o = yr_object_array_get_item ( r2 . o , 0 , ( int ) r1 . i ) ; if ( r1 . o == NULL ) r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_LOOKUP_DICT : pop ( r1 ) ; pop ( r2 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; assert ( r2 . o -> type == OBJECT_TYPE_DICTIONARY ) ; r1 . o = yr_object_dict_get_item ( r2 . o , 0 , r1 . ss -> c_string ) ; if ( r1 . o == NULL ) r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_CALL : args_fmt = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; i = ( int ) strlen ( args_fmt ) ; count = 0 ; while ( i > 0 ) { pop ( r1 ) ; if ( is_undef ( r1 ) ) count ++ ; args [ i - 1 ] = r1 ; i -- ; } pop ( r2 ) ; ensure_defined ( r2 ) ; if ( count > 0 ) { r1 . i = UNDEFINED ; push ( r1 ) ; break ; } function = ( YR_OBJECT_FUNCTION * ) r2 . o ; result = ERROR_INTERNAL_FATAL_ERROR ; for ( i = 0 ; i < MAX_OVERLOADED_FUNCTIONS ; i ++ ) { if ( function -> prototypes [ i ] . arguments_fmt == NULL ) break ; if ( strcmp ( function -> prototypes [ i ] . arguments_fmt , args_fmt ) == 0 ) { result = function -> prototypes [ i ] . code ( args , context , function ) ; break ; } } assert ( i < MAX_OVERLOADED_FUNCTIONS ) ; if ( result == ERROR_SUCCESS ) <S2SV_StartBug> { <S2SV_EndBug> <S2SV_StartBug> r1 . o = function -> return_obj ; <S2SV_EndBug> push ( r1 ) ; } else { stop = TRUE ; } break ; case OP_FOUND : pop ( r1 ) ; r1 . i = r1 . s -> matches [ tidx ] . tail != NULL ? 1 : 0 ; push ( r1 ) ; break ; case OP_FOUND_AT : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) ) { r1 . i = 0 ; push ( r1 ) ; break ; } match = r2 . s -> matches [ tidx ] . head ; r3 . i = FALSE ; while ( match != NULL ) { if ( r1 . i == match -> base + match -> offset ) { r3 . i = TRUE ; break ; } if ( r1 . i < match -> base + match -> offset ) break ; match = match -> next ; } push ( r3 ) ; break ; case OP_FOUND_IN : pop ( r3 ) ; pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; match = r3 . s -> matches [ tidx ] . head ; r3 . i = FALSE ; while ( match != NULL && ! r3 . i ) { if ( match -> base + match -> offset >= r1 . i && match -> base + match -> offset <= r2 . i ) { r3 . i = TRUE ; } if ( match -> base + match -> offset > r2 . i ) break ; match = match -> next ; } push ( r3 ) ; break ; case OP_COUNT : pop ( r1 ) ; r1 . i = r1 . s -> matches [ tidx ] . count ; push ( r1 ) ; break ; case OP_OFFSET : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; match = r2 . s -> matches [ tidx ] . head ; i = 1 ; r3 . i = UNDEFINED ; while ( match != NULL && r3 . i == UNDEFINED ) { if ( r1 . i == i ) r3 . i = match -> base + match -> offset ; i ++ ; match = match -> next ; } push ( r3 ) ; break ; case OP_LENGTH : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; match = r2 . s -> matches [ tidx ] . head ; i = 1 ; r3 . i = UNDEFINED ; while ( match != NULL && r3 . i == UNDEFINED ) { if ( r1 . i == i ) r3 . i = match -> match_length ; i ++ ; match = match -> next ; } push ( r3 ) ; break ; case OP_OF : found = 0 ; count = 0 ; pop ( r1 ) ; while ( ! is_undef ( r1 ) ) { if ( r1 . s -> matches [ tidx ] . tail != NULL ) found ++ ; count ++ ; pop ( r1 ) ; } pop ( r2 ) ; if ( is_undef ( r2 ) ) r1 . i = found >= count ? 1 : 0 ; else r1 . i = found >= r2 . i ? 1 : 0 ; push ( r1 ) ; break ; case OP_FILESIZE : r1 . i = context -> file_size ; push ( r1 ) ; break ; case OP_ENTRYPOINT : r1 . i = context -> entry_point ; push ( r1 ) ; break ; case OP_INT8 : pop ( r1 ) ; r1 . i = read_int8_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT16 : pop ( r1 ) ; r1 . i = read_int16_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT32 : pop ( r1 ) ; r1 . i = read_int32_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT8 : pop ( r1 ) ; r1 . i = read_uint8_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT16 : pop ( r1 ) ; r1 . i = read_uint16_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT32 : pop ( r1 ) ; r1 . i = read_uint32_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT8BE : pop ( r1 ) ; r1 . i = read_int8_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT16BE : pop ( r1 ) ; r1 . i = read_int16_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT32BE : pop ( r1 ) ; r1 . i = read_int32_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT8BE : pop ( r1 ) ; r1 . i = read_uint8_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT16BE : pop ( r1 ) ; r1 . i = read_uint16_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT32BE : pop ( r1 ) ; r1 . i = read_uint32_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_CONTAINS : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; r1 . i = memmem ( r1 . ss -> c_string , r1 . ss -> length , r2 . ss -> c_string , r2 . ss -> length ) != NULL ; push ( r1 ) ; break ; case OP_IMPORT : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; result = yr_modules_load ( ( char * ) r1 . p , context ) ; if ( result != ERROR_SUCCESS ) stop = TRUE ; break ; case OP_MATCHES : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r1 . ss -> length == 0 ) { r1 . i = FALSE ; push ( r1 ) ; break ; } result = yr_re_exec ( ( uint8_t * ) r2 . re -> code , ( uint8_t * ) r1 . ss -> c_string , r1 . ss -> length , 0 , r2 . re -> flags | RE_FLAGS_SCAN , NULL , NULL , & found ) ; if ( result != ERROR_SUCCESS ) stop = TRUE ; r1 . i = found >= 0 ; push ( r1 ) ; break ; case OP_INT_TO_DBL : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r2 = stack [ sp - r1 . i ] ; if ( is_undef ( r2 ) ) stack [ sp - r1 . i ] . i = UNDEFINED ; else stack [ sp - r1 . i ] . d = ( double ) r2 . i ; break ; case OP_STR_TO_BOOL : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . ss -> length > 0 ; push ( r1 ) ; break ; case OP_INT_EQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i == r2 . i ; push ( r1 ) ; break ; case OP_INT_NEQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i != r2 . i ; push ( r1 ) ; break ; case OP_INT_LT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i < r2 . i ; push ( r1 ) ; break ; case OP_INT_GT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i > r2 . i ; push ( r1 ) ; break ; case OP_INT_LE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i <= r2 . i ; push ( r1 ) ; break ; case OP_INT_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i >= r2 . i ; push ( r1 ) ; break ; case OP_INT_ADD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i + r2 . i ; push ( r1 ) ; break ; case OP_INT_SUB : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i - r2 . i ; push ( r1 ) ; break ; case OP_INT_MUL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i * r2 . i ; push ( r1 ) ; break ; case OP_INT_DIV : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r2 . i != 0 ) r1 . i = r1 . i / r2 . i ; else r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_INT_MINUS : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = - r1 . i ; push ( r1 ) ; break ; case OP_DBL_LT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d < r2 . d ; push ( r1 ) ; break ; case OP_DBL_GT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d > r2 . d ; push ( r1 ) ; break ; case OP_DBL_LE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d <= r2 . d ; push ( r1 ) ; break ; case OP_DBL_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d >= r2 . d ; push ( r1 ) ; break ; case OP_DBL_EQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d == r2 . d ; push ( r1 ) ; break ; case OP_DBL_NEQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d != r2 . d ; push ( r1 ) ; break ; case OP_DBL_ADD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d + r2 . d ; push ( r1 ) ; break ; case OP_DBL_SUB : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d - r2 . d ; push ( r1 ) ; break ; case OP_DBL_MUL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d * r2 . d ; push ( r1 ) ; break ; case OP_DBL_DIV : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d / r2 . d ; push ( r1 ) ; break ; case OP_DBL_MINUS : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . d = - r1 . d ; push ( r1 ) ; break ; case OP_STR_EQ : case OP_STR_NEQ : case OP_STR_LT : case OP_STR_LE : case OP_STR_GT : case OP_STR_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; switch ( * ip ) { case OP_STR_EQ : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) == 0 ) ; break ; case OP_STR_NEQ : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) != 0 ) ; break ; case OP_STR_LT : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) < 0 ) ; break ; case OP_STR_LE : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) <= 0 ) ; break ; case OP_STR_GT : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) > 0 ) ; break ; case OP_STR_GE : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) >= 0 ) ; break ; } push ( r1 ) ; break ; default : assert ( FALSE ) ; } if ( timeout > 0 ) { if ( ++ cycle == 10 ) { if ( difftime ( time ( NULL ) , start_time ) > timeout ) { # ifdef PROFILING_ENABLED assert ( current_rule != NULL ) ; current_rule -> clock_ticks += clock ( ) - start ; # endif result = ERROR_SCAN_TIMEOUT ; stop = TRUE ; } cycle = 0 ; } } ip ++ ; } <S2SV_StartBug> yr_modules_unload_all ( context ) ; <S2SV_EndBug> yr_free ( stack ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * function ; YR_OBJECT * * obj_ptr ; YR_ARENA * obj_arena ; <S2SV_ModStart> ) return ERROR_INSUFFICIENT_MEMORY ; FAIL_ON_ERROR_WITH_CLEANUP ( yr_arena_create ( 1024 , 0 , & obj_arena ) , yr_free ( stack ) ) <S2SV_ModStart> ; # endif assert ( sp == 0 ) ; <S2SV_ModStart> == ERROR_SUCCESS ) result = yr_object_copy ( function -> return_obj , & <S2SV_ModEnd> r1 . o <S2SV_ModStart> r1 . o ) ; if ( result == ERROR_SUCCESS ) result = yr_arena_write_data ( obj_arena , & r1 . o , sizeof ( r1 . o ) , NULL ) ; stop = ( result != ERROR_SUCCESS ) ; push ( r1 ) ; <S2SV_ModEnd> break ; case <S2SV_ModStart> ++ ; } obj_ptr = ( YR_OBJECT * * ) yr_arena_base_address ( obj_arena ) ; while ( obj_ptr != NULL ) { yr_object_destroy ( * obj_ptr ) ; obj_ptr = ( YR_OBJECT * * ) yr_arena_next_address ( obj_arena , obj_ptr , sizeof ( YR_OBJECT * ) ) ; } yr_arena_destroy ( obj_arena ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 vpx_codec_err_t vpx_codec_get_stream_info ( vpx_codec_ctx_t * ctx , vpx_codec_stream_info_t * si ) { vpx_codec_err_t res ; if ( ! ctx || ! si || si -> sz < sizeof ( vpx_codec_stream_info_t ) ) res = VPX_CODEC_INVALID_PARAM ; else if ( ! ctx -> iface || ! ctx -> priv ) res = VPX_CODEC_ERROR ; else { si -> w = 0 ; si -> h = 0 ; <S2SV_StartBug> res = ctx -> iface -> dec . get_si ( ctx -> priv -> alg_priv , si ) ; <S2SV_EndBug> } return SAVE_STATUS ( ctx , res ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . get_si ( get_alg_priv ( ctx ) <S2SV_ModEnd> , si )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static void nsc_encode_subsampling ( NSC_CONTEXT * context ) <S2SV_EndBug> { UINT16 x ; UINT16 y ; <S2SV_StartBug> BYTE * co_dst ; <S2SV_EndBug> BYTE * cg_dst ; INT8 * co_src0 ; INT8 * co_src1 ; INT8 * cg_src0 ; INT8 * cg_src1 ; UINT32 tempWidth ; <S2SV_StartBug> UINT32 tempHeight ; <S2SV_EndBug> tempWidth = ROUND_UP_TO ( context -> width , 8 ) ; tempHeight = ROUND_UP_TO ( context -> height , 2 ) ; <S2SV_StartBug> for ( y = 0 ; y < tempHeight >> 1 ; y ++ ) <S2SV_EndBug> { <S2SV_StartBug> co_dst = context -> priv -> PlaneBuffers [ 1 ] + y * ( tempWidth >> 1 ) ; <S2SV_EndBug> <S2SV_StartBug> cg_dst = context -> priv -> PlaneBuffers [ 2 ] + y * ( tempWidth >> 1 ) ; <S2SV_EndBug> <S2SV_StartBug> co_src0 = ( INT8 * ) context -> priv -> PlaneBuffers [ 1 ] + ( y << 1 ) * tempWidth ; <S2SV_EndBug> <S2SV_StartBug> co_src1 = co_src0 + tempWidth ; <S2SV_EndBug> <S2SV_StartBug> cg_src0 = ( INT8 * ) context -> priv -> PlaneBuffers [ 2 ] + ( y << 1 ) * tempWidth ; <S2SV_EndBug> <S2SV_StartBug> cg_src1 = cg_src0 + tempWidth ; <S2SV_EndBug> for ( x = 0 ; x < tempWidth >> 1 ; x ++ ) { * co_dst ++ = ( BYTE ) ( ( ( INT16 ) * co_src0 + ( INT16 ) * ( co_src0 + 1 ) + ( INT16 ) * co_src1 + ( INT16 ) * ( co_src1 + 1 ) ) >> 2 ) ; * cg_dst ++ = ( BYTE ) ( ( ( INT16 ) * cg_src0 + ( INT16 ) * ( cg_src0 + 1 ) + ( INT16 ) * cg_src1 + ( INT16 ) * ( cg_src1 + 1 ) ) >> 2 ) ; co_src0 += 2 ; co_src1 += 2 ; cg_src0 += 2 ; cg_src1 += 2 ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> nsc_encode_subsampling ( NSC_CONTEXT <S2SV_ModStart> UINT16 y ; <S2SV_ModEnd> UINT32 tempWidth ; <S2SV_ModStart> ; UINT32 tempHeight ; if ( ! context ) return FALSE <S2SV_ModStart> 2 ) ; if ( tempHeight == 0 ) return FALSE ; if ( tempWidth > context -> priv -> PlaneBuffersLength / tempHeight ) return FALSE ; <S2SV_ModStart> ++ ) { BYTE * <S2SV_ModStart> 1 ) ; BYTE * <S2SV_ModStart> 1 ) ; const INT8 * <S2SV_ModStart> * tempWidth ; const INT8 * <S2SV_ModStart> + tempWidth ; const INT8 * <S2SV_ModStart> * tempWidth ; const INT8 * <S2SV_ModStart> ; } } return TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-444(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11724\n\n```\nCWE-444 static ngx_int_t <S2SV_StartBug> ngx_http_lua_copy_request_headers ( ngx_http_request_t * sr , ngx_http_request_t * r ) <S2SV_EndBug> { <S2SV_StartBug> ngx_table_elt_t * header ; <S2SV_EndBug> ngx_list_part_t * part ; <S2SV_StartBug> ngx_uint_t i ; <S2SV_EndBug> if ( ngx_list_init ( & sr -> headers_in . headers , sr -> pool , 20 , sizeof ( ngx_table_elt_t ) ) != NGX_OK ) { return NGX_ERROR ; } <S2SV_StartBug> dd ( \"before:<S2SV_blank>parent<S2SV_blank>req<S2SV_blank>headers<S2SV_blank>count:<S2SV_blank>%d\" , <S2SV_EndBug> <S2SV_StartBug> ( int ) r -> headers_in . headers . part . nelts ) ; <S2SV_EndBug> part = & r -> headers_in . headers . part ; header = part -> elts ; for ( i = 0 ; ; i ++ ) { if ( i >= part -> nelts ) { <S2SV_StartBug> if ( part -> next == NULL ) { <S2SV_EndBug> break ; } part = part -> next ; header = part -> elts ; i = 0 ; } dd ( \"setting<S2SV_blank>request<S2SV_blank>header<S2SV_blank>%.*s:<S2SV_blank>%.*s\" , ( int ) header [ i ] . key . len , header [ i ] . key . data , ( int ) header [ i ] . value . len , header [ i ] . value . data ) ; if ( ngx_http_lua_set_input_header ( sr , header [ i ] . key , header [ i ] . value , 0 ) == NGX_ERROR ) { return NGX_ERROR ; } <S2SV_StartBug> } <S2SV_EndBug> dd ( \"after:<S2SV_blank>parent<S2SV_blank>req<S2SV_blank>headers<S2SV_blank>count:<S2SV_blank>%d\" , <S2SV_StartBug> ( int ) r -> headers_in . headers . part . nelts ) ; <S2SV_EndBug> return NGX_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , ngx_http_request_t * pr , int pr_not_chunked <S2SV_ModEnd> ) { ngx_table_elt_t <S2SV_ModStart> { ngx_table_elt_t * clh , * <S2SV_ModStart> ; ngx_uint_t i ; u_char * p ; off_t len ; dd ( \"before:<S2SV_blank>parent<S2SV_blank>req<S2SV_blank>headers<S2SV_blank>count:<S2SV_blank>%d\" , ( int ) pr -> headers_in . headers . part . nelts ) <S2SV_ModStart> NGX_ERROR ; } if ( sr -> request_body && ! pr_not_chunked ) { len = sr -> request_body -> buf ? ngx_buf_size ( sr -> request_body -> buf ) : 0 ; clh = ngx_list_push ( & sr <S2SV_ModEnd> -> headers_in . <S2SV_ModStart> headers_in . headers ) ; if ( clh <S2SV_ModEnd> == NULL ) <S2SV_ModStart> == NULL ) <S2SV_ModEnd> { return NGX_ERROR <S2SV_ModStart> NGX_ERROR ; } clh -> hash = ngx_http_lua_content_length_hash ; clh -> key = ngx_http_lua_content_length_header_key ; clh -> lowcase_key = ngx_pnalloc ( sr -> pool , clh -> key . len ) ; if ( clh -> lowcase_key == NULL ) { return NGX_ERROR ; } ngx_strlow ( clh -> lowcase_key , clh -> key . data , clh -> key . len ) ; p = ngx_palloc ( sr -> pool , NGX_OFF_T_LEN ) ; if ( p == NULL ) { return NGX_ERROR ; } clh -> value . data = p ; clh -> value . len = ngx_sprintf ( clh -> value . data , \"%O\" , len ) - clh -> value . data ; sr -> headers_in . content_length = clh ; sr -> headers_in . content_length_n = len ; dd ( \"sr<S2SV_blank>crafted<S2SV_blank>content-length:<S2SV_blank>%.*s\" , ( int ) sr -> headers_in . content_length -> value . len , sr -> headers_in . content_length -> value . data ) ; } part = & pr -> headers_in . headers . part ; header = part -> elts ; for ( i = 0 ; ; i ++ ) { if ( i >= part -> nelts ) { if ( part -> next == NULL ) { break ; } part = part -> next ; header = part -> elts ; i = 0 ; } if ( ! pr_not_chunked && header [ i ] . key . len == sizeof ( \"Content-Length\" ) - 1 && ngx_strncasecmp ( header [ i ] . key . data , ( u_char * ) \"Content-Length\" , sizeof ( \"Content-Length\" ) - 1 ) == 0 ) { continue ; } dd ( \"sr<S2SV_blank>copied<S2SV_blank>req<S2SV_blank>header<S2SV_blank>%.*s:<S2SV_blank>%.*s\" , ( int ) header [ i ] . key . len , header [ i ] . key . data , ( int ) header [ i ] . value . len , header [ i ] . value . data ) ; if ( ngx_http_lua_set_input_header ( sr , header [ i ] . key , header [ i ] . value , 0 ) == NGX_ERROR ) { return NGX_ERROR ; } } dd ( <S2SV_ModEnd> \"after:<S2SV_blank>parent<S2SV_blank>req<S2SV_blank>headers<S2SV_blank>count:<S2SV_blank>%d\" , ( <S2SV_ModStart> ( int ) pr <S2SV_ModEnd> -> headers_in .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static unsigned int do_16x16_motion_iteration ( VP9_COMP * cpi , const MV * ref_mv , MV * dst_mv , int mb_row , int mb_col ) { <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> vp9_variance_fn_ptr_t v_fn_ptr = cpi -> fn_ptr [ BLOCK_16X16 ] ; <S2SV_EndBug> const int tmp_col_min = x -> mv_col_min ; const int tmp_col_max = x -> mv_col_max ; const int tmp_row_min = x -> mv_row_min ; const int tmp_row_max = x -> mv_row_max ; MV ref_full ; <S2SV_StartBug> int step_param = cpi -> sf . reduce_first_step_size + <S2SV_EndBug> ( cpi -> speed < 8 ? ( cpi -> speed > 5 ? 1 : 0 ) : 2 ) ; <S2SV_StartBug> step_param = MIN ( step_param , ( cpi -> sf . max_step_search_steps - 2 ) ) ; <S2SV_EndBug> vp9_set_mv_search_range ( x , ref_mv ) ; ref_full . col = ref_mv -> col >> 3 ; ref_full . row = ref_mv -> row >> 3 ; <S2SV_StartBug> vp9_hex_search ( x , & ref_full , step_param , x -> errorperbit , 0 , & v_fn_ptr , 0 , <S2SV_EndBug> ref_mv , dst_mv ) ; { int distortion ; unsigned int sse ; cpi -> find_fractional_mv_step ( x , dst_mv , ref_mv , cpi -> common . allow_high_precision_mv , x -> errorperbit , <S2SV_StartBug> & v_fn_ptr , 0 , cpi -> sf . subpel_iters_per_step , NULL , NULL , & distortion , <S2SV_EndBug> <S2SV_StartBug> & sse ) ; <S2SV_EndBug> } xd -> mi [ 0 ] -> mbmi . mode = NEWMV ; xd -> mi [ 0 ] -> mbmi . mv [ 0 ] . as_mv = * dst_mv ; vp9_build_inter_predictors_sby ( xd , mb_row , mb_col , BLOCK_16X16 ) ; x -> mv_col_min = tmp_col_min ; x -> mv_col_max = tmp_col_max ; x -> mv_row_min = tmp_row_min ; x -> mv_row_max = tmp_row_max ; <S2SV_StartBug> return vp9_sad16x16 ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , <S2SV_EndBug> <S2SV_StartBug> xd -> plane [ 0 ] . dst . buf , xd -> plane [ 0 ] . dst . stride , <S2SV_EndBug> INT_MAX ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & cpi -> td . <S2SV_ModStart> -> e_mbd ; const MV_SPEED_FEATURES * const mv_sf = & cpi -> sf . mv ; const <S2SV_ModStart> ref_full ; int cost_list [ 5 ] ; int step_param = mv_sf -> reduce_first_step_size <S2SV_ModEnd> ; step_param = <S2SV_ModStart> ( step_param , MAX_MVSEARCH_STEPS - 2 <S2SV_ModEnd> ) ; vp9_set_mv_search_range <S2SV_ModStart> , 0 , cond_cost_list ( cpi , cost_list ) , <S2SV_ModStart> , 0 , mv_sf -> subpel_iters_per_step , cond_cost_list ( cpi , cost_list ) , <S2SV_ModEnd> NULL , NULL <S2SV_ModStart> , & sse , NULL , 0 , 0 <S2SV_ModStart> tmp_row_max ; return vpx_sad16x16 <S2SV_ModEnd> ( x -> <S2SV_ModStart> dst . stride <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11684\n\n```\nCWE-326 <S2SV_StartBug> int secure_decrypt ( void * data , unsigned int data_length , int is_signed ) <S2SV_EndBug> { <S2SV_StartBug> at91_aes_key_size_t key_size ; <S2SV_EndBug> unsigned int cmac_key [ 8 ] , cipher_key [ 8 ] ; unsigned int iv [ AT91_AES_IV_SIZE_WORD ] ; unsigned int computed_cmac [ AT91_AES_BLOCK_SIZE_WORD ] ; unsigned int fixed_length ; const unsigned int * cmac ; int rc = - 1 ; <S2SV_StartBug> init_keys ( & key_size , cipher_key , cmac_key , iv ) ; <S2SV_EndBug> at91_aes_init ( ) ; if ( is_signed ) { if ( at91_aes_cmac ( data_length , data , computed_cmac , key_size , cmac_key ) ) goto exit ; fixed_length = at91_aes_roundup ( data_length ) ; cmac = ( const unsigned int * ) ( ( char * ) data + fixed_length ) ; if ( ! consttime_memequal ( cmac , computed_cmac , AT91_AES_BLOCK_SIZE_BYTE ) ) goto exit ; } if ( at91_aes_cbc ( data_length , data , data , 0 , key_size , cipher_key , iv ) ) goto exit ; rc = 0 ; exit : at91_aes_cleanup ( ) ; <S2SV_StartBug> memset ( cmac_key , 0 , sizeof ( cmac_key ) ) ; <S2SV_EndBug> memset ( cipher_key , 0 , sizeof ( cipher_key ) ) ; memset ( iv , 0 , sizeof ( iv ) ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> { at91_aes_key_size_t key_size <S2SV_ModEnd> ; unsigned int <S2SV_ModStart> - 1 ; # if defined ( CONFIG_AES_KEY_SIZE_128 ) key_size = AT91_AES_KEY_SIZE_128 ; # elif defined ( CONFIG_AES_KEY_SIZE_192 ) key_size = AT91_AES_KEY_SIZE_192 ; # elif defined ( CONFIG_AES_KEY_SIZE_256 ) key_size = AT91_AES_KEY_SIZE_256 ; # else # error \"bad<S2SV_blank>AES<S2SV_blank>key<S2SV_blank>size\" # endif <S2SV_ModEnd> at91_aes_init ( ) <S2SV_ModStart> ( ) ; <S2SV_ModEnd> return rc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0238\n\n```\nCWE-119 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { size_t ofs = CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ; q = ( const uint8_t * ) ( const void * ) ( ( const char * ) ( const void * ) p + ofs - 2 * sizeof ( uint32_t ) ) ; if ( q > e ) { DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%\" SIZE_T_FORMAT \"u)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=0x%tx,0x%x\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , offs ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; <S2SV_StartBug> o = 2 ; <S2SV_EndBug> } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_FLOAT : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; u32 = CDF_TOLE4 ( u32 ) ; memcpy ( & inp [ i ] . pi_f , & u32 , sizeof ( inp [ i ] . pi_f ) ) ; break ; case CDF_DOUBLE : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; memcpy ( & inp [ i ] . pi_d , & u64 , sizeof ( inp [ i ] . pi_d ) ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , nelements ) ) ; <S2SV_StartBug> for ( j = 0 ; j < nelements ; j ++ , i ++ ) { <S2SV_EndBug> uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; if ( l & 1 ) l ++ ; o += l >> 1 ; if ( q + o >= e ) goto out ; o4 = o * sizeof ( uint32_t ) ; } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; break ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( nelements == 0 ) { DPRINTF ( ( \"CDF_VECTOR<S2SV_blank>with<S2SV_blank>nelements<S2SV_blank>==<S2SV_blank>0\\\\n\" ) ) ; goto out ; } <S2SV_ModStart> j < nelements && i < sh . sh_properties ; <S2SV_ModEnd> j ++ ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static void update_bar_address ( struct vmctx * ctx , struct pci_vdev * dev , uint64_t addr , int idx , int type , bool ignore_reg_unreg ) { bool decode = false ; uint64_t orig_addr = dev -> bar [ idx ] . addr ; if ( ! ignore_reg_unreg ) { if ( dev -> bar [ idx ] . type == PCIBAR_IO ) decode = porten ( dev ) ; else decode = memen ( dev ) ; } if ( decode ) unregister_bar ( dev , idx ) ; switch ( type ) { case PCIBAR_IO : case PCIBAR_MEM32 : dev -> bar [ idx ] . addr = addr ; break ; case PCIBAR_MEM64 : dev -> bar [ idx ] . addr &= ~ 0xffffffffUL ; dev -> bar [ idx ] . addr |= addr ; break ; case PCIBAR_MEMHI64 : dev -> bar [ idx ] . addr &= 0xffffffff ; dev -> bar [ idx ] . addr |= addr ; break ; default : <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> } if ( decode ) register_bar ( dev , idx ) ; if ( dev -> dev_ops -> vdev_update_bar_map && decode ) dev -> dev_ops -> vdev_update_bar_map ( ctx , dev , idx , orig_addr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; default : pr_err ( \"%s:<S2SV_blank>invalid<S2SV_blank>bar<S2SV_blank>type<S2SV_blank>%d\\\\n\" , __func__ , type ) ; return <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadGIFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define BitSet ( byte , bit ) ( ( ( byte ) & ( bit ) ) == ( bit ) ) # define LSBFirstOrder ( x , y ) ( ( ( y ) << 8 ) | ( x ) ) Image * image , * meta_image ; int number_extensionss = 0 ; MagickBooleanType status ; RectangleInfo page ; register ssize_t i ; register unsigned char * p ; size_t delay , dispose , duration , global_colors , image_count , iterations , one ; ssize_t count , opacity ; unsigned char background , c , flag , * global_colormap , header [ MaxTextExtent ] , magick [ 12 ] ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 6 , magick ) ; if ( ( count != 6 ) || ( ( LocaleNCompare ( ( char * ) magick , \"GIF87\" , 5 ) != 0 ) && ( LocaleNCompare ( ( char * ) magick , \"GIF89\" , 5 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; page . width = ReadBlobLSBShort ( image ) ; page . height = ReadBlobLSBShort ( image ) ; flag = ( unsigned char ) ReadBlobByte ( image ) ; background = ( unsigned char ) ReadBlobByte ( image ) ; c = ( unsigned char ) ReadBlobByte ( image ) ; one = 1 ; global_colors = one << ( ( ( size_t ) flag & 0x07 ) + 1 ) ; global_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( global_colors , 256 ) , 3UL * sizeof ( * global_colormap ) ) ; if ( global_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( BitSet ( ( int ) flag , 0x80 ) != 0 ) count = ReadBlob ( image , ( size_t ) ( 3 * global_colors ) , global_colormap ) ; delay = 0 ; dispose = 0 ; duration = 0 ; iterations = 1 ; opacity = ( - 1 ) ; image_count = 0 ; meta_image = AcquireImage ( image_info ) ; for ( ; ; ) { count = ReadBlob ( image , 1 , & c ) ; if ( count != 1 ) break ; if ( c == ( unsigned char ) ';' ) break ; if ( c == ( unsigned char ) '!' ) { count = ReadBlob ( image , 1 , & c ) ; if ( count != 1 ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadExtensionBlock\" ) ; } switch ( c ) { case 0xf9 : { while ( ReadBlobBlock ( image , header ) != 0 ) ; dispose = ( size_t ) ( header [ 0 ] >> 2 ) ; delay = ( size_t ) ( ( header [ 2 ] << 8 ) | header [ 1 ] ) ; if ( ( ssize_t ) ( header [ 0 ] & 0x01 ) == 0x01 ) opacity = ( ssize_t ) header [ 3 ] ; break ; } case 0xfe : { char * comments ; size_t length ; comments = AcquireString ( ( char * ) NULL ) ; for ( length = 0 ; ; length += count ) { count = ( ssize_t ) ReadBlobBlock ( image , header ) ; if ( count == 0 ) break ; header [ count ] = '\\\\0' ; ( void ) ConcatenateString ( & comments , ( const char * ) header ) ; } ( void ) SetImageProperty ( meta_image , \"comment\" , comments ) ; comments = DestroyString ( comments ) ; break ; } case 0xff : { MagickBooleanType loop ; loop = MagickFalse ; if ( ReadBlobBlock ( image , header ) != 0 ) loop = LocaleNCompare ( ( char * ) header , \"NETSCAPE2.0\" , 11 ) == 0 ? MagickTrue : MagickFalse ; if ( loop != MagickFalse ) { while ( ReadBlobBlock ( image , header ) != 0 ) iterations = ( size_t ) ( ( header [ 2 ] << 8 ) | header [ 1 ] ) ; break ; } else { char name [ MaxTextExtent ] ; int block_length , info_length , reserved_length ; MagickBooleanType i8bim , icc , iptc , magick ; StringInfo * profile ; unsigned char * info ; icc = LocaleNCompare ( ( char * ) header , \"ICCRGBG1012\" , 11 ) == 0 ? MagickTrue : MagickFalse ; magick = LocaleNCompare ( ( char * ) header , \"ImageMagick\" , 11 ) == 0 ? MagickTrue : MagickFalse ; i8bim = LocaleNCompare ( ( char * ) header , \"MGK8BIM0000\" , 11 ) == 0 ? MagickTrue : MagickFalse ; iptc = LocaleNCompare ( ( char * ) header , \"MGKIPTC0000\" , 11 ) == 0 ? MagickTrue : MagickFalse ; number_extensionss ++ ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Reading<S2SV_blank>GIF<S2SV_blank>application<S2SV_blank>extension\" ) ; info = ( unsigned char * ) AcquireQuantumMemory ( 255UL , sizeof ( * info ) ) ; reserved_length = 255 ; for ( info_length = 0 ; ; ) { block_length = ( int ) ReadBlobBlock ( image , & info [ info_length ] ) ; if ( block_length == 0 ) break ; info_length += block_length ; if ( info_length > ( reserved_length - 255 ) ) { reserved_length += 4096 ; info = ( unsigned char * ) ResizeQuantumMemory ( info , ( size_t ) reserved_length , sizeof ( * info ) ) ; if ( info == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } } profile = BlobToStringInfo ( info , ( size_t ) info_length ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( i8bim != MagickFalse ) ( void ) CopyMagickString ( name , \"8bim\" , sizeof ( name ) ) ; else if ( icc != MagickFalse ) ( void ) CopyMagickString ( name , \"icc\" , sizeof ( name ) ) ; else if ( iptc != MagickFalse ) ( void ) CopyMagickString ( name , \"iptc\" , sizeof ( name ) ) ; else if ( magick != MagickFalse ) { ( void ) CopyMagickString ( name , \"magick\" , sizeof ( name ) ) ; image -> gamma = StringToDouble ( ( char * ) info + 6 , ( char * * ) NULL ) ; } else ( void ) FormatLocaleString ( name , sizeof ( name ) , \"gif:%.11s\" , header ) ; info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; if ( magick == MagickFalse ) ( void ) SetImageProfile ( meta_image , name , profile ) ; profile = DestroyStringInfo ( profile ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>profile<S2SV_blank>name=%s\" , name ) ; } break ; } default : { while ( ReadBlobBlock ( image , header ) != 0 ) ; break ; } } } if ( c != ( unsigned char ) ',' ) continue ; if ( image_count != 0 ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; } image_count ++ ; meta_image -> scene = image -> scene ; CloneImageProperties ( image , meta_image ) ; DestroyImageProperties ( meta_image ) ; CloneImageProfiles ( image , meta_image ) ; DestroyImageProfiles ( meta_image ) ; image -> storage_class = PseudoClass ; image -> compression = LZWCompression ; page . x = ( ssize_t ) ReadBlobLSBShort ( image ) ; page . y = ( ssize_t ) ReadBlobLSBShort ( image ) ; image -> columns = ReadBlobLSBShort ( image ) ; image -> rows = ReadBlobLSBShort ( image ) ; image -> depth = 8 ; flag = ( unsigned char ) ReadBlobByte ( image ) ; image -> interlace = BitSet ( ( int ) flag , 0x40 ) != 0 ? GIFInterlace : NoInterlace ; image -> colors = BitSet ( ( int ) flag , 0x80 ) == 0 ? global_colors : one << ( ( size_t ) ( flag & 0x07 ) + 1 ) ; if ( opacity >= ( ssize_t ) image -> colors ) opacity = ( - 1 ) ; image -> page . width = page . width ; image -> page . height = page . height ; image -> page . y = page . y ; image -> page . x = page . x ; image -> delay = delay ; image -> iterations = iterations ; image -> ticks_per_second = 100 ; image -> dispose = ( DisposeType ) dispose ; image -> matte = opacity >= 0 ? MagickTrue : MagickFalse ; delay = 0 ; dispose = 0 ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; } if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } if ( BitSet ( ( int ) flag , 0x80 ) == 0 ) { p = global_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( * p ++ ) ; if ( i == opacity ) { image -> colormap [ i ] . opacity = ( Quantum ) TransparentOpacity ; image -> transparent_color = image -> colormap [ opacity ] ; } } image -> background_color = image -> colormap [ MagickMin ( background , image -> colors - 1 ) ] ; } else { unsigned char * colormap ; colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , 3 * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } count = ReadBlob ( image , ( 3 * image -> colors ) * sizeof ( * colormap ) , colormap ) ; if ( count != ( ssize_t ) ( 3 * image -> colors ) ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( * p ++ ) ; if ( i == opacity ) image -> colormap [ i ] . opacity = ( Quantum ) TransparentOpacity ; } colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; } if ( image -> gamma == 1.0 ) { for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) if ( IsGrayPixel ( image -> colormap + i ) == MagickFalse ) break ; ( void ) SetImageColorspace ( image , i == ( ssize_t ) image -> colors ? GRAYColorspace : RGBColorspace ) ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; <S2SV_StartBug> if ( image_info -> ping != MagickFalse ) <S2SV_EndBug> status = PingGIFImage ( image ) ; else status = DecodeImage ( image , opacity ) ; if ( ( image_info -> ping == MagickFalse ) && ( status == MagickFalse ) ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } duration += image -> delay * image -> iterations ; if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; opacity = ( - 1 ) ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) image -> scene - 1 , image -> scene ) ; if ( status == MagickFalse ) break ; } image -> duration = duration ; meta_image = DestroyImage ( meta_image ) ; global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19061\n\n```\nCWE-401 static int adis_update_scan_mode_burst ( struct iio_dev * indio_dev , const unsigned long * scan_mask ) { struct adis * adis = iio_device_get_drvdata ( indio_dev ) ; unsigned int burst_length ; u8 * tx ; burst_length = ( indio_dev -> num_channels - 1 ) * sizeof ( u16 ) ; burst_length += adis -> burst -> extra_len ; adis -> xfer = kcalloc ( 2 , sizeof ( * adis -> xfer ) , GFP_KERNEL ) ; if ( ! adis -> xfer ) return - ENOMEM ; adis -> buffer = kzalloc ( burst_length + sizeof ( u16 ) , GFP_KERNEL ) ; <S2SV_StartBug> if ( ! adis -> buffer ) <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> tx = adis -> buffer + burst_length ; <S2SV_EndBug> tx [ 0 ] = ADIS_READ_REG ( adis -> burst -> reg_cmd ) ; tx [ 1 ] = 0 ; adis -> xfer [ 0 ] . tx_buf = tx ; adis -> xfer [ 0 ] . bits_per_word = 8 ; adis -> xfer [ 0 ] . len = 2 ; adis -> xfer [ 1 ] . rx_buf = adis -> buffer ; adis -> xfer [ 1 ] . bits_per_word = 8 ; adis -> xfer [ 1 ] . len = burst_length ; spi_message_init ( & adis -> msg ) ; spi_message_add_tail ( & adis -> xfer [ 0 ] , & adis -> msg ) ; spi_message_add_tail ( & adis -> xfer [ 1 ] , & adis -> msg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> buffer ) { kfree ( adis -> xfer ) ; adis -> xfer = NULL ; <S2SV_ModStart> - ENOMEM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17854\n\n```\nCWE-190 static int adjust_ptr_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , const struct bpf_reg_state * ptr_reg , const struct bpf_reg_state * off_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) , * dst_reg ; bool known = tnum_is_const ( off_reg -> var_off ) ; s64 smin_val = off_reg -> smin_value , smax_val = off_reg -> smax_value , smin_ptr = ptr_reg -> smin_value , smax_ptr = ptr_reg -> smax_value ; u64 umin_val = off_reg -> umin_value , umax_val = off_reg -> umax_value , umin_ptr = ptr_reg -> umin_value , umax_ptr = ptr_reg -> umax_value ; u8 opcode = BPF_OP ( insn -> code ) ; u32 dst = insn -> dst_reg ; dst_reg = & regs [ dst ] ; if ( WARN_ON_ONCE ( known && ( smin_val != smax_val ) ) ) { print_verifier_state ( env , env -> cur_state ) ; verbose ( env , \"verifier<S2SV_blank>internal<S2SV_blank>error:<S2SV_blank>known<S2SV_blank>but<S2SV_blank>bad<S2SV_blank>sbounds\\\\n\" ) ; return - EINVAL ; } if ( WARN_ON_ONCE ( known && ( umin_val != umax_val ) ) ) { print_verifier_state ( env , env -> cur_state ) ; verbose ( env , \"verifier<S2SV_blank>internal<S2SV_blank>error:<S2SV_blank>known<S2SV_blank>but<S2SV_blank>bad<S2SV_blank>ubounds\\\\n\" ) ; return - EINVAL ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>32-bit<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == PTR_TO_MAP_VALUE_OR_NULL ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>PTR_TO_MAP_VALUE_OR_NULL<S2SV_blank>prohibited,<S2SV_blank>null-check<S2SV_blank>it<S2SV_blank>first\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == CONST_PTR_TO_MAP ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>CONST_PTR_TO_MAP<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == PTR_TO_PACKET_END ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>PTR_TO_PACKET_END<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } dst_reg -> type = ptr_reg -> type ; <S2SV_StartBug> dst_reg -> id = ptr_reg -> id ; <S2SV_EndBug> switch ( opcode ) { case BPF_ADD : if ( known && ( ptr_reg -> off + smin_val == ( s64 ) ( s32 ) ( ptr_reg -> off + smin_val ) ) ) { dst_reg -> smin_value = smin_ptr ; dst_reg -> smax_value = smax_ptr ; dst_reg -> umin_value = umin_ptr ; dst_reg -> umax_value = umax_ptr ; dst_reg -> var_off = ptr_reg -> var_off ; dst_reg -> off = ptr_reg -> off + smin_val ; dst_reg -> range = ptr_reg -> range ; break ; } if ( signed_add_overflows ( smin_ptr , smin_val ) || signed_add_overflows ( smax_ptr , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = smin_ptr + smin_val ; dst_reg -> smax_value = smax_ptr + smax_val ; } if ( umin_ptr + umin_val < umin_ptr || umax_ptr + umax_val < umax_ptr ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value = umin_ptr + umin_val ; dst_reg -> umax_value = umax_ptr + umax_val ; } dst_reg -> var_off = tnum_add ( ptr_reg -> var_off , off_reg -> var_off ) ; dst_reg -> off = ptr_reg -> off ; if ( reg_is_pkt_pointer ( ptr_reg ) ) { dst_reg -> id = ++ env -> id_gen ; dst_reg -> range = 0 ; } break ; case BPF_SUB : if ( dst_reg == off_reg ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>subtract<S2SV_blank>pointer<S2SV_blank>from<S2SV_blank>scalar\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == PTR_TO_STACK ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>subtraction<S2SV_blank>from<S2SV_blank>stack<S2SV_blank>pointer<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } if ( known && ( ptr_reg -> off - smin_val == ( s64 ) ( s32 ) ( ptr_reg -> off - smin_val ) ) ) { dst_reg -> smin_value = smin_ptr ; dst_reg -> smax_value = smax_ptr ; dst_reg -> umin_value = umin_ptr ; dst_reg -> umax_value = umax_ptr ; dst_reg -> var_off = ptr_reg -> var_off ; dst_reg -> id = ptr_reg -> id ; dst_reg -> off = ptr_reg -> off - smin_val ; dst_reg -> range = ptr_reg -> range ; break ; } if ( signed_sub_overflows ( smin_ptr , smax_val ) || signed_sub_overflows ( smax_ptr , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = smin_ptr - smax_val ; dst_reg -> smax_value = smax_ptr - smin_val ; } if ( umin_ptr < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value = umin_ptr - umax_val ; dst_reg -> umax_value = umax_ptr - umin_val ; } dst_reg -> var_off = tnum_sub ( ptr_reg -> var_off , off_reg -> var_off ) ; dst_reg -> off = ptr_reg -> off ; if ( reg_is_pkt_pointer ( ptr_reg ) ) { dst_reg -> id = ++ env -> id_gen ; if ( smin_val < 0 ) dst_reg -> range = 0 ; } break ; case BPF_AND : case BPF_OR : case BPF_XOR : if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>bitwise<S2SV_blank>operator<S2SV_blank>%s<S2SV_blank>on<S2SV_blank>pointer<S2SV_blank>prohibited\\\\n\" , dst , bpf_alu_string [ opcode >> 4 ] ) ; return - EACCES ; default : if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>with<S2SV_blank>%s<S2SV_blank>operator<S2SV_blank>prohibited\\\\n\" , dst , bpf_alu_string [ opcode >> 4 ] ) ; return - EACCES ; } <S2SV_StartBug> __update_reg_bounds ( dst_reg ) ; <S2SV_EndBug> __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptr_reg -> id ; if ( ! check_reg_sane_offset ( env , off_reg , ptr_reg -> type ) || ! check_reg_sane_offset ( env , ptr_reg , ptr_reg -> type ) ) return - EINVAL <S2SV_ModStart> EACCES ; } if ( ! check_reg_sane_offset ( env , dst_reg , ptr_reg -> type ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 void Com_WriteConfig_f ( void ) { char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { <S2SV_StartBug> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; <S2SV_EndBug> return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; COM_DefaultExtension ( filename , sizeof ( filename ) , \".cfg\" ) ; Com_Printf ( \"Writing<S2SV_blank>%s.\\\\n\" , filename ) ; Com_WriteConfigToFile ( filename ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; return ; } if ( ! COM_CompareExtension ( filename , \".cfg\" ) ) { Com_Printf ( \"Com_WriteConfig_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".cfg\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int adev_open_output_stream ( struct audio_hw_device * dev , audio_io_handle_t handle , audio_devices_t devices , audio_output_flags_t flags , struct audio_config * config , struct audio_stream_out * * stream_out , const char * address ) { struct a2dp_audio_device * a2dp_dev = ( struct a2dp_audio_device * ) dev ; struct a2dp_stream_out * out ; int ret = 0 ; int i ; UNUSED ( address ) ; UNUSED ( handle ) ; UNUSED ( devices ) ; UNUSED ( flags ) ; INFO ( \"opening<S2SV_blank>output\" ) ; out = ( struct a2dp_stream_out * ) calloc ( 1 , sizeof ( struct a2dp_stream_out ) ) ; if ( ! out ) return - ENOMEM ; out -> stream . common . get_sample_rate = out_get_sample_rate ; out -> stream . common . set_sample_rate = out_set_sample_rate ; out -> stream . common . get_buffer_size = out_get_buffer_size ; out -> stream . common . get_channels = out_get_channels ; out -> stream . common . get_format = out_get_format ; out -> stream . common . set_format = out_set_format ; out -> stream . common . standby = out_standby ; out -> stream . common . dump = out_dump ; out -> stream . common . set_parameters = out_set_parameters ; out -> stream . common . get_parameters = out_get_parameters ; out -> stream . common . add_audio_effect = out_add_audio_effect ; out -> stream . common . remove_audio_effect = out_remove_audio_effect ; out -> stream . get_latency = out_get_latency ; out -> stream . set_volume = out_set_volume ; out -> stream . write = out_write ; out -> stream . get_render_position = out_get_render_position ; out -> stream . get_presentation_position = out_get_presentation_position ; a2dp_stream_common_init ( & out -> common ) ; out -> common . cfg . channel_flags = AUDIO_STREAM_DEFAULT_CHANNEL_FLAG ; out -> common . cfg . format = AUDIO_STREAM_DEFAULT_FORMAT ; out -> common . cfg . rate = AUDIO_STREAM_DEFAULT_RATE ; if ( config ) { config -> format = out_get_format ( ( const struct audio_stream * ) & out -> stream ) ; config -> sample_rate = out_get_sample_rate ( ( const struct audio_stream * ) & out -> stream ) ; config -> channel_mask = out_get_channels ( ( const struct audio_stream * ) & out -> stream ) ; } * stream_out = & out -> stream ; a2dp_dev -> output = out ; a2dp_open_ctrl_path ( & out -> common ) ; if ( out -> common . ctrl_fd == AUDIO_SKT_DISCONNECTED ) { ERROR ( \"ctrl<S2SV_blank>socket<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>connect<S2SV_blank>(%s)\" , strerror ( errno ) ) ; ret = - 1 ; goto err_open ; } DEBUG ( \"success\" ) ; <S2SV_StartBug> usleep ( 250000 ) ; <S2SV_EndBug> return 0 ; err_open : free ( out ) ; * stream_out = NULL ; a2dp_dev -> output = NULL ; ERROR ( \"failed\" ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"success\" ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> usleep ( 250000 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void update_mv_probs ( vp9_prob * p , int n , vp9_reader * r ) { <S2SV_EndBug> int i ; for ( i = 0 ; i < n ; ++ i ) <S2SV_StartBug> if ( vp9_read ( r , MV_UPDATE_PROB ) ) <S2SV_EndBug> <S2SV_StartBug> p [ i ] = ( vp9_read_literal ( r , 7 ) << 1 ) | 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void update_mv_probs ( vpx_prob <S2SV_ModEnd> * p , <S2SV_ModStart> int n , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> ) if ( vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> ] = ( vpx_read_literal <S2SV_ModEnd> ( r ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18021\n\n```\nCWE-20 static int get_core_reg ( struct kvm_vcpu * vcpu , const struct kvm_one_reg * reg ) { __u32 __user * uaddr = ( __u32 __user * ) ( unsigned long ) reg -> addr ; struct kvm_regs * regs = vcpu_gp_regs ( vcpu ) ; int nr_regs = sizeof ( * regs ) / sizeof ( __u32 ) ; u32 off ; off = core_reg_offset_from_id ( reg -> id ) ; if ( off >= nr_regs || ( off + ( KVM_REG_SIZE ( reg -> id ) / sizeof ( __u32 ) ) ) >= nr_regs ) return - ENOENT ; <S2SV_StartBug> if ( copy_to_user ( uaddr , ( ( u32 * ) regs ) + off , KVM_REG_SIZE ( reg -> id ) ) ) <S2SV_EndBug> return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( validate_core_offset ( reg ) ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5336\n\n```\nCWE-20 void mk_request_free ( struct session_request * sr ) { if ( sr -> fd_file > 0 ) { <S2SV_StartBug> mk_vhost_close ( sr ) ; <S2SV_EndBug> } if ( sr -> headers . location ) { mk_mem_free ( sr -> headers . location ) ; } if ( sr -> uri_processed . data != sr -> uri . data ) { mk_ptr_free ( & sr -> uri_processed ) ; } if ( sr -> real_path . data != sr -> real_path_static ) { mk_ptr_free ( & sr -> real_path ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( sr -> fd_is_fdt == MK_TRUE ) { <S2SV_ModStart> sr ) ; } else { close ( sr -> fd_file ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13006\n\n```\nCWE-125 GF_Err urn_Read ( GF_Box * s , GF_BitStream * bs ) { u32 i , to_read ; char * tmpName ; GF_DataEntryURNBox * ptr = ( GF_DataEntryURNBox * ) s ; if ( ! ptr -> size ) return GF_OK ; to_read = ( u32 ) ptr -> size ; tmpName = ( char * ) gf_malloc ( sizeof ( char ) * to_read ) ; if ( ! tmpName ) return GF_OUT_OF_MEM ; gf_bs_read_data ( bs , tmpName , to_read ) ; i = 0 ; <S2SV_StartBug> while ( ( tmpName [ i ] != 0 ) && ( i < to_read ) ) { <S2SV_EndBug> i ++ ; } if ( i == to_read ) { gf_free ( tmpName ) ; return GF_ISOM_INVALID_FILE ; } if ( i == to_read - 1 ) { ptr -> nameURN = tmpName ; ptr -> location = NULL ; return GF_OK ; } ptr -> nameURN = ( char * ) gf_malloc ( sizeof ( char ) * ( i + 1 ) ) ; if ( ! ptr -> nameURN ) { gf_free ( tmpName ) ; return GF_OUT_OF_MEM ; } ptr -> location = ( char * ) gf_malloc ( sizeof ( char ) * ( to_read - i - 1 ) ) ; if ( ! ptr -> location ) { gf_free ( tmpName ) ; gf_free ( ptr -> nameURN ) ; ptr -> nameURN = NULL ; return GF_OUT_OF_MEM ; } memcpy ( ptr -> nameURN , tmpName , i + 1 ) ; memcpy ( ptr -> location , tmpName + i + 1 , ( to_read - i - 1 ) ) ; gf_free ( tmpName ) ; return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; while ( ( i < to_read ) && <S2SV_ModStart> != 0 ) <S2SV_ModEnd> ) { i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_split_extent_at ( handle_t * handle , struct inode * inode , struct ext4_ext_path * path , ext4_lblk_t split , int split_flag , int flags ) { ext4_fsblk_t newblock ; ext4_lblk_t ee_block ; struct ext4_extent * ex , newex , orig_ex ; struct ext4_extent * ex2 = NULL ; unsigned int ee_len , depth ; <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> ext_debug ( \"ext4_split_extents_at:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical\" \"block<S2SV_blank>%llu\\\\n\" , inode -> i_ino , ( unsigned long long ) split ) ; ext4_ext_show_leaf ( inode , path ) ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; newblock = split - ee_block + ext4_ext_pblock ( ex ) ; BUG_ON ( split < ee_block || split >= ( ee_block + ee_len ) ) ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto out ; if ( split == ee_block ) { if ( split_flag & EXT4_EXT_MARK_UNINIT2 ) ext4_ext_mark_uninitialized ( ex ) ; else ext4_ext_mark_initialized ( ex ) ; if ( ! ( flags & EXT4_GET_BLOCKS_PRE_IO ) ) ext4_ext_try_to_merge ( handle , inode , path , ex ) ; err = ext4_ext_dirty ( handle , inode , path + path -> p_depth ) ; goto out ; } memcpy ( & orig_ex , ex , sizeof ( orig_ex ) ) ; ex -> ee_len = cpu_to_le16 ( split - ee_block ) ; if ( split_flag & EXT4_EXT_MARK_UNINIT1 ) ext4_ext_mark_uninitialized ( ex ) ; err = ext4_ext_dirty ( handle , inode , path + depth ) ; if ( err ) goto fix_extent_len ; ex2 = & newex ; ex2 -> ee_block = cpu_to_le32 ( split ) ; ex2 -> ee_len = cpu_to_le16 ( ee_len - ( split - ee_block ) ) ; ext4_ext_store_pblock ( ex2 , newblock ) ; if ( split_flag & EXT4_EXT_MARK_UNINIT2 ) ext4_ext_mark_uninitialized ( ex2 ) ; err = ext4_ext_insert_extent ( handle , inode , path , & newex , flags ) ; if ( err == - ENOSPC && ( EXT4_EXT_MAY_ZEROOUT & split_flag ) ) { <S2SV_StartBug> err = ext4_ext_zeroout ( inode , & orig_ex ) ; <S2SV_EndBug> if ( err ) goto fix_extent_len ; ex -> ee_len = cpu_to_le16 ( ee_len ) ; ext4_ext_try_to_merge ( handle , inode , path , ex ) ; err = ext4_ext_dirty ( handle , inode , path + path -> p_depth ) ; goto out ; } else if ( err ) goto fix_extent_len ; out : ext4_ext_show_leaf ( inode , path ) ; return err ; fix_extent_len : ex -> ee_len = orig_ex . ee_len ; ext4_ext_dirty ( handle , inode , path + depth ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err = 0 ; BUG_ON ( ( split_flag & ( EXT4_EXT_DATA_VALID1 | EXT4_EXT_DATA_VALID2 ) ) == ( EXT4_EXT_DATA_VALID1 | EXT4_EXT_DATA_VALID2 ) ) <S2SV_ModStart> ) ) { if ( split_flag & ( EXT4_EXT_DATA_VALID1 | EXT4_EXT_DATA_VALID2 ) ) { if ( split_flag & EXT4_EXT_DATA_VALID1 ) err = ext4_ext_zeroout ( inode , ex2 ) ; else err = ext4_ext_zeroout ( inode , ex ) ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 static __inline__ void jiffies_to_compat_timeval ( unsigned long jiffies , struct compat_timeval * value ) { u64 nsec = ( u64 ) jiffies * TICK_NSEC ; <S2SV_StartBug> long rem ; <S2SV_EndBug> <S2SV_StartBug> value -> tv_sec = div_long_long_rem ( nsec , NSEC_PER_SEC , & rem ) ; <S2SV_EndBug> value -> tv_usec = rem / NSEC_PER_USEC ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * TICK_NSEC ; u32 <S2SV_ModEnd> rem ; value <S2SV_ModStart> -> tv_sec = div_u64_rem <S2SV_ModEnd> ( nsec ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 static int __f2fs_set_acl ( struct inode * inode , int type , struct posix_acl * acl , struct page * ipage ) { int name_index ; void * value = NULL ; size_t size = 0 ; int error ; switch ( type ) { case ACL_TYPE_ACCESS : name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; <S2SV_StartBug> set_acl_inode ( inode , inode -> i_mode ) ; <S2SV_EndBug> if ( error == 0 ) acl = NULL ; } break ; case ACL_TYPE_DEFAULT : name_index = F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = f2fs_acl_to_disk ( acl , & size ) ; if ( IS_ERR ( value ) ) { clear_inode_flag ( inode , FI_ACL_MODE ) ; return ( int ) PTR_ERR ( value ) ; } } error = f2fs_setxattr ( inode , name_index , \"\" , value , size , ipage , 0 ) ; kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; clear_inode_flag ( inode , FI_ACL_MODE ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( error <S2SV_ModEnd> ) return error <S2SV_ModStart> -> i_mode ) <S2SV_ModEnd> ; } break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6271\n\n```\nCWE-254 int bzrtp_packetParser ( bzrtpContext_t * zrtpContext , bzrtpChannelContext_t * zrtpChannelContext , const uint8_t * input , uint16_t inputLength , bzrtpPacket_t * zrtpPacket ) { int i ; uint8_t * messageContent = ( uint8_t * ) ( input + ZRTP_PACKET_HEADER_LENGTH + ZRTP_MESSAGE_HEADER_LENGTH ) ; switch ( zrtpPacket -> messageType ) { case MSGTYPE_HELLO : { bzrtpHelloMessage_t * messageData ; messageData = ( bzrtpHelloMessage_t * ) malloc ( sizeof ( bzrtpHelloMessage_t ) ) ; memcpy ( messageData -> version , messageContent , 4 ) ; messageContent += 4 ; memcpy ( messageData -> clientIdentifier , messageContent , 16 ) ; messageContent += 16 ; memcpy ( messageData -> H3 , messageContent , 32 ) ; messageContent += 32 ; memcpy ( messageData -> ZID , messageContent , 12 ) ; messageContent += 12 ; messageData -> S = ( ( * messageContent ) >> 6 ) & 0x01 ; messageData -> M = ( ( * messageContent ) >> 5 ) & 0x01 ; messageData -> P = ( ( * messageContent ) >> 4 ) & 0x01 ; messageContent += 1 ; messageData -> hc = MIN ( ( * messageContent ) & 0x0F , 7 ) ; messageContent += 1 ; messageData -> cc = MIN ( ( ( * messageContent ) >> 4 ) & 0x0F , 7 ) ; messageData -> ac = MIN ( ( * messageContent ) & 0x0F , 7 ) ; messageContent += 1 ; messageData -> kc = MIN ( ( ( * messageContent ) >> 4 ) & 0x0F , 7 ) ; messageData -> sc = MIN ( ( * messageContent ) & 0x0F , 7 ) ; messageContent += 1 ; if ( zrtpPacket -> messageLength != ZRTP_HELLOMESSAGE_FIXED_LENGTH + 4 * ( ( uint16_t ) ( messageData -> hc ) + ( uint16_t ) ( messageData -> cc ) + ( uint16_t ) ( messageData -> ac ) + ( uint16_t ) ( messageData -> kc ) + ( uint16_t ) ( messageData -> sc ) ) ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } for ( i = 0 ; i < messageData -> hc ; i ++ ) { messageData -> supportedHash [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_HASH_TYPE ) ; messageContent += 4 ; } for ( i = 0 ; i < messageData -> cc ; i ++ ) { messageData -> supportedCipher [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_CIPHERBLOCK_TYPE ) ; messageContent += 4 ; } for ( i = 0 ; i < messageData -> ac ; i ++ ) { messageData -> supportedAuthTag [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_AUTHTAG_TYPE ) ; messageContent += 4 ; } for ( i = 0 ; i < messageData -> kc ; i ++ ) { messageData -> supportedKeyAgreement [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_KEYAGREEMENT_TYPE ) ; messageContent += 4 ; } for ( i = 0 ; i < messageData -> sc ; i ++ ) { messageData -> supportedSas [ i ] = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_SAS_TYPE ) ; messageContent += 4 ; } addMandatoryCryptoTypesIfNeeded ( ZRTP_HASH_TYPE , messageData -> supportedHash , & messageData -> hc ) ; addMandatoryCryptoTypesIfNeeded ( ZRTP_CIPHERBLOCK_TYPE , messageData -> supportedCipher , & messageData -> cc ) ; addMandatoryCryptoTypesIfNeeded ( ZRTP_AUTHTAG_TYPE , messageData -> supportedAuthTag , & messageData -> ac ) ; addMandatoryCryptoTypesIfNeeded ( ZRTP_KEYAGREEMENT_TYPE , messageData -> supportedKeyAgreement , & messageData -> kc ) ; addMandatoryCryptoTypesIfNeeded ( ZRTP_SAS_TYPE , messageData -> supportedSas , & messageData -> sc ) ; memcpy ( messageData -> MAC , messageContent , 8 ) ; zrtpPacket -> messageData = ( void * ) messageData ; zrtpPacket -> packetString = ( uint8_t * ) malloc ( inputLength * sizeof ( uint8_t ) ) ; memcpy ( zrtpPacket -> packetString , input , inputLength ) ; } break ; case MSGTYPE_HELLOACK : { if ( zrtpPacket -> messageLength != ZRTP_HELLOACKMESSAGE_FIXED_LENGTH ) { return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } } break ; case MSGTYPE_COMMIT : { uint8_t checkH3 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpHelloMessage_t * peerHelloMessageData ; uint16_t variableLength = 0 ; bzrtpCommitMessage_t * messageData ; messageData = ( bzrtpCommitMessage_t * ) malloc ( sizeof ( bzrtpCommitMessage_t ) ) ; memcpy ( messageData -> H2 , messageContent , 32 ) ; messageContent += 32 ; if ( zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerHelloMessageData = ( bzrtpHelloMessage_t * ) zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( messageData -> H2 , 32 , 32 , checkH3 ) ; if ( memcmp ( checkH3 , peerHelloMessageData -> H3 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( messageData -> H2 , 32 , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerHelloMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } memcpy ( messageData -> ZID , messageContent , 12 ) ; messageContent += 12 ; messageData -> hashAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_HASH_TYPE ) ; messageContent += 4 ; messageData -> cipherAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_CIPHERBLOCK_TYPE ) ; messageContent += 4 ; messageData -> authTagAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_AUTHTAG_TYPE ) ; messageContent += 4 ; messageData -> keyAgreementAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_KEYAGREEMENT_TYPE ) ; messageContent += 4 ; switch ( messageData -> keyAgreementAlgo ) { case ZRTP_KEYAGREEMENT_DH2k : case ZRTP_KEYAGREEMENT_EC25 : case ZRTP_KEYAGREEMENT_DH3k : case ZRTP_KEYAGREEMENT_EC38 : case ZRTP_KEYAGREEMENT_EC52 : variableLength = 32 ; break ; case ZRTP_KEYAGREEMENT_Prsh : variableLength = 24 ; break ; case ZRTP_KEYAGREEMENT_Mult : variableLength = 16 ; break ; default : free ( messageData ) ; return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } if ( zrtpPacket -> messageLength != ZRTP_COMMITMESSAGE_FIXED_LENGTH + variableLength ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } messageData -> sasAlgo = cryptoAlgoTypeStringToInt ( messageContent , ZRTP_SAS_TYPE ) ; messageContent += 4 ; if ( ( messageData -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Prsh ) || ( messageData -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Mult ) ) { memcpy ( messageData -> nonce , messageContent , 16 ) ; messageContent += 16 ; if ( messageData -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Prsh ) { memcpy ( messageData -> keyID , messageContent , 8 ) ; messageContent += 8 ; } } else { memcpy ( messageData -> hvi , messageContent , 32 ) ; messageContent += 32 ; } memcpy ( messageData -> MAC , messageContent , 8 ) ; zrtpPacket -> messageData = ( void * ) messageData ; zrtpPacket -> packetString = ( uint8_t * ) malloc ( inputLength * sizeof ( uint8_t ) ) ; memcpy ( zrtpPacket -> packetString , input , inputLength ) ; } break ; case MSGTYPE_DHPART1 : case MSGTYPE_DHPART2 : { bzrtpDHPartMessage_t * messageData ; uint16_t pvLength = computeKeyAgreementPrivateValueLength ( zrtpChannelContext -> keyAgreementAlgo ) ; if ( pvLength == 0 ) { return BZRTP_PARSER_ERROR_INVALIDCONTEXT ; } if ( zrtpPacket -> messageLength != ZRTP_DHPARTMESSAGE_FIXED_LENGTH + pvLength ) { return BZRTP_PARSER_ERROR_INVALIDMESSAGE ; } messageData = ( bzrtpDHPartMessage_t * ) malloc ( sizeof ( bzrtpDHPartMessage_t ) ) ; messageData -> pv = ( uint8_t * ) malloc ( pvLength * sizeof ( uint8_t ) ) ; memcpy ( messageData -> H1 , messageContent , 32 ) ; messageContent += 32 ; if ( zrtpChannelContext -> role == RESPONDER ) { uint8_t checkH2 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpCommitMessage_t * peerCommitMessageData ; if ( zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerCommitMessageData = ( bzrtpCommitMessage_t * ) zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( messageData -> H1 , 32 , 32 , checkH2 ) ; if ( memcmp ( checkH2 , peerCommitMessageData -> H2 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( messageData -> H1 , 32 , zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerCommitMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } <S2SV_StartBug> } else { <S2SV_EndBug> uint8_t checkH2 [ 32 ] ; uint8_t checkH3 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpHelloMessage_t * peerHelloMessageData ; if ( zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerHelloMessageData = ( bzrtpHelloMessage_t * ) zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( messageData -> H1 , 32 , 32 , checkH2 ) ; bctoolbox_sha256 ( checkH2 , 32 , 32 , checkH3 ) ; if ( memcmp ( checkH3 , peerHelloMessageData -> H3 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( checkH2 , 32 , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerHelloMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } } memcpy ( messageData -> rs1ID , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> rs2ID , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> auxsecretID , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> pbxsecretID , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> pv , messageContent , pvLength ) ; messageContent += pvLength ; memcpy ( messageData -> MAC , messageContent , 8 ) ; zrtpPacket -> messageData = ( void * ) messageData ; zrtpPacket -> packetString = ( uint8_t * ) malloc ( inputLength * sizeof ( uint8_t ) ) ; memcpy ( zrtpPacket -> packetString , input , inputLength ) ; } break ; case MSGTYPE_CONFIRM1 : case MSGTYPE_CONFIRM2 : { uint8_t * confirmMessageKey = NULL ; uint8_t * confirmMessageMacKey = NULL ; bzrtpConfirmMessage_t * messageData ; uint16_t cipherTextLength ; uint8_t computedHmac [ 8 ] ; uint8_t * confirmPlainMessageBuffer ; uint8_t * confirmPlainMessage ; if ( zrtpChannelContext -> role == RESPONDER ) { if ( ( zrtpChannelContext -> zrtpkeyi == NULL ) || ( zrtpChannelContext -> mackeyi == NULL ) ) { return BZRTP_PARSER_ERROR_INVALIDCONTEXT ; } confirmMessageKey = zrtpChannelContext -> zrtpkeyi ; confirmMessageMacKey = zrtpChannelContext -> mackeyi ; } if ( zrtpChannelContext -> role == INITIATOR ) { if ( ( zrtpChannelContext -> zrtpkeyr == NULL ) || ( zrtpChannelContext -> mackeyr == NULL ) ) { return BZRTP_PARSER_ERROR_INVALIDCONTEXT ; } confirmMessageKey = zrtpChannelContext -> zrtpkeyr ; confirmMessageMacKey = zrtpChannelContext -> mackeyr ; } messageData = ( bzrtpConfirmMessage_t * ) malloc ( sizeof ( bzrtpConfirmMessage_t ) ) ; memcpy ( messageData -> confirm_mac , messageContent , 8 ) ; messageContent += 8 ; memcpy ( messageData -> CFBIV , messageContent , 16 ) ; messageContent += 16 ; cipherTextLength = zrtpPacket -> messageLength - ZRTP_MESSAGE_HEADER_LENGTH - 24 ; zrtpChannelContext -> hmacFunction ( confirmMessageMacKey , zrtpChannelContext -> hashLength , messageContent , cipherTextLength , 8 , computedHmac ) ; if ( memcmp ( computedHmac , messageData -> confirm_mac , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGCONFIRMMAC ; } confirmPlainMessageBuffer = ( uint8_t * ) malloc ( cipherTextLength * sizeof ( uint8_t ) ) ; zrtpChannelContext -> cipherDecryptionFunction ( confirmMessageKey , messageData -> CFBIV , messageContent , cipherTextLength , confirmPlainMessageBuffer ) ; confirmPlainMessage = confirmPlainMessageBuffer ; memcpy ( messageData -> H0 , confirmPlainMessage , 32 ) ; confirmPlainMessage += 33 ; if ( zrtpChannelContext -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Prsh || zrtpChannelContext -> keyAgreementAlgo == ZRTP_KEYAGREEMENT_Mult ) { uint8_t checkH1 [ 32 ] ; bctoolbox_sha256 ( messageData -> H0 , 32 , 32 , checkH1 ) ; if ( zrtpChannelContext -> role == RESPONDER ) { uint8_t checkH2 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpCommitMessage_t * peerCommitMessageData ; if ( zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerCommitMessageData = ( bzrtpCommitMessage_t * ) zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( checkH1 , 32 , 32 , checkH2 ) ; if ( memcmp ( checkH2 , peerCommitMessageData -> H2 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( checkH1 , 32 , zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerCommitMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } } else { uint8_t checkH2 [ 32 ] ; uint8_t checkH3 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpHelloMessage_t * peerHelloMessageData ; if ( zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerHelloMessageData = ( bzrtpHelloMessage_t * ) zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( checkH1 , 32 , 32 , checkH2 ) ; bctoolbox_sha256 ( checkH2 , 32 , 32 , checkH3 ) ; if ( memcmp ( checkH3 , peerHelloMessageData -> H3 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( checkH2 , 32 , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ HELLO_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerHelloMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } } } else { uint8_t checkH1 [ 32 ] ; uint8_t checkMAC [ 32 ] ; bzrtpDHPartMessage_t * peerDHPartMessageData ; if ( zrtpChannelContext -> peerPackets [ DHPART_MESSAGE_STORE_ID ] == NULL ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNEXPECTEDMESSAGE ; } peerDHPartMessageData = ( bzrtpDHPartMessage_t * ) zrtpChannelContext -> peerPackets [ DHPART_MESSAGE_STORE_ID ] -> messageData ; bctoolbox_sha256 ( messageData -> H0 , 32 , 32 , checkH1 ) ; if ( memcmp ( checkH1 , peerDHPartMessageData -> H1 , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHASHCHAIN ; } bctoolbox_hmacSha256 ( messageData -> H0 , 32 , zrtpChannelContext -> peerPackets [ DHPART_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , zrtpChannelContext -> peerPackets [ DHPART_MESSAGE_STORE_ID ] -> messageLength - 8 , 8 , checkMAC ) ; if ( memcmp ( checkMAC , peerDHPartMessageData -> MAC , 8 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } } messageData -> sig_len = ( ( uint16_t ) ( confirmPlainMessage [ 0 ] & 0x01 ) ) << 8 | ( ( ( uint16_t ) confirmPlainMessage [ 1 ] ) & 0x00FF ) ; confirmPlainMessage += 2 ; messageData -> E = ( ( * confirmPlainMessage ) & 0x08 ) >> 3 ; messageData -> V = ( ( * confirmPlainMessage ) & 0x04 ) >> 2 ; messageData -> A = ( ( * confirmPlainMessage ) & 0x02 ) >> 1 ; messageData -> D = ( * confirmPlainMessage ) & 0x01 ; confirmPlainMessage += 1 ; messageData -> cacheExpirationInterval = ( ( ( uint32_t ) confirmPlainMessage [ 0 ] ) << 24 ) | ( ( ( uint32_t ) confirmPlainMessage [ 1 ] ) << 16 ) | ( ( ( uint32_t ) confirmPlainMessage [ 2 ] ) << 8 ) | ( ( uint32_t ) confirmPlainMessage [ 3 ] ) ; confirmPlainMessage += 4 ; if ( messageData -> sig_len > 0 ) { memcpy ( messageData -> signatureBlockType , confirmPlainMessage , 4 ) ; confirmPlainMessage += 4 ; messageData -> signatureBlock = ( uint8_t * ) malloc ( 4 * ( messageData -> sig_len - 1 ) * sizeof ( uint8_t ) ) ; memcpy ( messageData -> signatureBlock , confirmPlainMessage , 4 * ( messageData -> sig_len - 1 ) ) ; } else { messageData -> signatureBlock = NULL ; } free ( confirmPlainMessageBuffer ) ; zrtpPacket -> packetString = ( uint8_t * ) malloc ( inputLength * sizeof ( uint8_t ) ) ; memcpy ( zrtpPacket -> packetString , input , inputLength ) ; zrtpPacket -> messageData = ( void * ) messageData ; } break ; case MSGTYPE_CONF2ACK : break ; case MSGTYPE_PING : { bzrtpPingMessage_t * messageData ; messageData = ( bzrtpPingMessage_t * ) malloc ( sizeof ( bzrtpPingMessage_t ) ) ; memcpy ( messageData -> version , messageContent , 4 ) ; messageContent += 4 ; memcpy ( messageData -> endpointHash , messageContent , 8 ) ; zrtpPacket -> messageData = ( void * ) messageData ; } break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BZRTP_PARSER_ERROR_UNMATCHINGMAC ; } { uint8_t computedHvi [ 32 ] ; uint16_t HelloMessageLength = zrtpChannelContext -> selfPackets [ HELLO_MESSAGE_STORE_ID ] -> messageLength ; uint16_t DHPartHelloMessageStringLength = zrtpPacket -> messageLength + HelloMessageLength ; uint8_t * DHPartHelloMessageString = ( uint8_t * ) malloc ( DHPartHelloMessageStringLength * sizeof ( uint8_t ) ) ; memcpy ( DHPartHelloMessageString , input + ZRTP_PACKET_HEADER_LENGTH , zrtpPacket -> messageLength ) ; memcpy ( DHPartHelloMessageString + zrtpPacket -> messageLength , zrtpChannelContext -> selfPackets [ HELLO_MESSAGE_STORE_ID ] -> packetString + ZRTP_PACKET_HEADER_LENGTH , HelloMessageLength ) ; zrtpChannelContext -> hashFunction ( DHPartHelloMessageString , DHPartHelloMessageStringLength , 32 , computedHvi ) ; free ( DHPartHelloMessageString ) ; if ( memcmp ( computedHvi , peerCommitMessageData -> hvi , 32 ) != 0 ) { free ( messageData ) ; return BZRTP_PARSER_ERROR_UNMATCHINGHVI ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1763\n\n```\nCWE-20 static int __sock_diag_rcv_msg ( struct sk_buff * skb , struct nlmsghdr * nlh ) { int err ; struct sock_diag_req * req = nlmsg_data ( nlh ) ; const struct sock_diag_handler * hndl ; if ( nlmsg_len ( nlh ) < sizeof ( * req ) ) return - EINVAL ; <S2SV_StartBug> hndl = sock_diag_lock_handler ( req -> sdiag_family ) ; <S2SV_EndBug> if ( hndl == NULL ) err = - ENOENT ; else err = hndl -> dump ( skb , nlh ) ; sock_diag_unlock_handler ( hndl ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EINVAL ; if ( req -> sdiag_family >= AF_MAX ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int pppol2tp_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int err ; struct sk_buff * skb ; struct sock * sk = sock -> sk ; err = - EIO ; if ( sk -> sk_state & PPPOX_BOUND ) <S2SV_StartBug> goto end ; <S2SV_EndBug> msg -> msg_namelen = 0 ; err = 0 ; skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & err ) ; if ( ! skb ) goto end ; if ( len > skb -> len ) len = skb -> len ; else if ( len < skb -> len ) msg -> msg_flags |= MSG_TRUNC ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , len ) ; if ( likely ( err == 0 ) ) err = len ; kfree_skb ( skb ) ; end : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto end <S2SV_ModEnd> ; err =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void <S2SV_StartBug> l2tp_bearer_type_print ( netdissect_options * ndo , const u_char * dat ) <S2SV_EndBug> { <S2SV_StartBug> const uint32_t * ptr = ( const uint32_t * ) dat ; <S2SV_EndBug> if ( EXTRACT_32BITS ( ptr ) & L2TP_BEARER_TYPE_ANALOG_MASK ) { ND_PRINT ( ( ndo , \"A\" ) ) ; } if ( EXTRACT_32BITS ( ptr ) & L2TP_BEARER_TYPE_DIGITAL_MASK ) { ND_PRINT ( ( ndo , \"D\" ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_char * dat , u_int length <S2SV_ModStart> ) dat ; if ( length < 4 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9438\n\n```\nCWE-674 static void yydestruct ( const char * yymsg , int yytype , YYSTYPE * yyvaluep , void * yyscanner , HEX_LEX_ENVIRONMENT * lex_env ) { YYUSE ( yyvaluep ) ; YYUSE ( yyscanner ) ; YYUSE ( lex_env ) ; if ( ! yymsg ) yymsg = \"Deleting\" ; YY_SYMBOL_PRINT ( yymsg , yytype , yyvaluep , yylocationp ) ; YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN switch ( yytype ) { case 16 : <S2SV_StartBug> # line 94 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1023 \"hex_grammar.c\" break ; case 17 : <S2SV_StartBug> # line 95 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1029 \"hex_grammar.c\" break ; case 18 : <S2SV_StartBug> # line 96 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1035 \"hex_grammar.c\" break ; case 19 : <S2SV_StartBug> # line 97 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1041 \"hex_grammar.c\" break ; case 21 : <S2SV_StartBug> # line 100 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1047 \"hex_grammar.c\" break ; case 22 : <S2SV_StartBug> # line 99 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1053 \"hex_grammar.c\" break ; case 23 : <S2SV_StartBug> # line 98 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1059 \"hex_grammar.c\" break ; default : break ; } YY_IGNORE_MAYBE_UNINITIALIZED_END }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : # line 101 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1030 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 102 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1036 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 103 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1042 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 104 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1048 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 107 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1054 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 106 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1060 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 105 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1066 <S2SV_ModEnd> \"hex_grammar.c\" break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7914\n\n```\nCWE-125 static bool assoc_array_insert_into_terminal_node ( struct assoc_array_edit * edit , const struct assoc_array_ops * ops , const void * index_key , struct assoc_array_walk_result * result ) { struct assoc_array_shortcut * shortcut , * new_s0 ; struct assoc_array_node * node , * new_n0 , * new_n1 , * side ; struct assoc_array_ptr * ptr ; unsigned long dissimilarity , base_seg , blank ; size_t keylen ; bool have_meta ; int level , diff ; int slot , next_slot , free_slot , i , j ; node = result -> terminal_node . node ; level = result -> terminal_node . level ; edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] = result -> terminal_node . slot ; pr_devel ( \"-->%s()\\\\n\" , __func__ ) ; free_slot = - 1 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; if ( ! ptr ) { free_slot = i ; continue ; } <S2SV_StartBug> if ( ops -> compare_object ( assoc_array_ptr_to_leaf ( ptr ) , index_key ) ) { <S2SV_EndBug> pr_devel ( \"replace<S2SV_blank>in<S2SV_blank>slot<S2SV_blank>%d\\\\n\" , i ) ; edit -> leaf_p = & node -> slots [ i ] ; edit -> dead_leaf = node -> slots [ i ] ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[replace]\\\\n\" , __func__ ) ; return true ; } } if ( free_slot >= 0 ) { pr_devel ( \"insert<S2SV_blank>in<S2SV_blank>free<S2SV_blank>slot<S2SV_blank>%d\\\\n\" , free_slot ) ; edit -> leaf_p = & node -> slots [ free_slot ] ; edit -> adjust_count_on = node ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[insert]\\\\n\" , __func__ ) ; return true ; } new_n0 = kzalloc ( sizeof ( struct assoc_array_node ) , GFP_KERNEL ) ; if ( ! new_n0 ) return false ; edit -> new_meta [ 0 ] = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 = kzalloc ( sizeof ( struct assoc_array_node ) , GFP_KERNEL ) ; if ( ! new_n1 ) return false ; edit -> new_meta [ 1 ] = assoc_array_node_to_ptr ( new_n1 ) ; pr_devel ( \"no<S2SV_blank>spare<S2SV_blank>slots\\\\n\" ) ; have_meta = false ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; if ( assoc_array_ptr_is_meta ( ptr ) ) { edit -> segment_cache [ i ] = 0xff ; have_meta = true ; continue ; } base_seg = ops -> get_object_key_chunk ( assoc_array_ptr_to_leaf ( ptr ) , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ i ] = base_seg & ASSOC_ARRAY_FAN_MASK ; } if ( have_meta ) { pr_devel ( \"have<S2SV_blank>meta\\\\n\" ) ; goto split_node ; } dissimilarity = 0 ; base_seg = edit -> segment_cache [ 0 ] ; for ( i = 1 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) dissimilarity |= edit -> segment_cache [ i ] ^ base_seg ; pr_devel ( \"only<S2SV_blank>leaves;<S2SV_blank>dissimilarity=%lx\\\\n\" , dissimilarity ) ; if ( ( dissimilarity & ASSOC_ARRAY_FAN_MASK ) == 0 ) { if ( ( edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] ^ base_seg ) == 0 ) goto all_leaves_cluster_together ; goto present_leaves_cluster_but_not_new_leaf ; } split_node : pr_devel ( \"split<S2SV_blank>node\\\\n\" ) ; edit -> set [ 0 ] . to = assoc_array_node_to_ptr ( new_n0 ) ; new_n0 -> back_pointer = node -> back_pointer ; new_n0 -> parent_slot = node -> parent_slot ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = - 1 ; do_split_node : pr_devel ( \"do_split_node\\\\n\" ) ; new_n0 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; new_n1 -> nr_leaves_on_branch = 0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { slot = edit -> segment_cache [ i ] ; if ( slot != 0xff ) for ( j = i + 1 ; j < ASSOC_ARRAY_FAN_OUT + 1 ; j ++ ) if ( edit -> segment_cache [ j ] == slot ) goto found_slot_for_multiple_occupancy ; } found_slot_for_multiple_occupancy : pr_devel ( \"same<S2SV_blank>slot:<S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>[%02x]\\\\n\" , i , j , slot ) ; BUG_ON ( i >= ASSOC_ARRAY_FAN_OUT ) ; BUG_ON ( j >= ASSOC_ARRAY_FAN_OUT + 1 ) ; BUG_ON ( slot >= ASSOC_ARRAY_FAN_OUT ) ; new_n1 -> parent_slot = slot ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) if ( assoc_array_ptr_is_meta ( node -> slots [ i ] ) ) new_n0 -> slots [ i ] = node -> slots [ i ] ; else new_n0 -> slots [ i ] = NULL ; BUG_ON ( new_n0 -> slots [ slot ] != NULL ) ; new_n0 -> slots [ slot ] = assoc_array_node_to_ptr ( new_n1 ) ; free_slot = - 1 ; next_slot = 0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { if ( assoc_array_ptr_is_meta ( node -> slots [ i ] ) ) continue ; if ( edit -> segment_cache [ i ] == slot ) { new_n1 -> slots [ next_slot ++ ] = node -> slots [ i ] ; new_n1 -> nr_leaves_on_branch ++ ; } else { do { free_slot ++ ; } while ( new_n0 -> slots [ free_slot ] != NULL ) ; new_n0 -> slots [ free_slot ] = node -> slots [ i ] ; } } pr_devel ( \"filtered:<S2SV_blank>f=%x<S2SV_blank>n=%x\\\\n\" , free_slot , next_slot ) ; if ( edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] != slot ) { do { free_slot ++ ; } while ( new_n0 -> slots [ free_slot ] != NULL ) ; edit -> leaf_p = & new_n0 -> slots [ free_slot ] ; edit -> adjust_count_on = new_n0 ; } else { edit -> leaf_p = & new_n1 -> slots [ next_slot ++ ] ; edit -> adjust_count_on = new_n1 ; } BUG_ON ( next_slot <= 1 ) ; edit -> set_backpointers_to = assoc_array_node_to_ptr ( new_n0 ) ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { if ( edit -> segment_cache [ i ] == 0xff ) { ptr = node -> slots [ i ] ; BUG_ON ( assoc_array_ptr_is_leaf ( ptr ) ) ; if ( assoc_array_ptr_is_node ( ptr ) ) { side = assoc_array_ptr_to_node ( ptr ) ; edit -> set_backpointers [ i ] = & side -> back_pointer ; } else { shortcut = assoc_array_ptr_to_shortcut ( ptr ) ; edit -> set_backpointers [ i ] = & shortcut -> back_pointer ; } } } ptr = node -> back_pointer ; if ( ! ptr ) edit -> set [ 0 ] . ptr = & edit -> array -> root ; else if ( assoc_array_ptr_is_node ( ptr ) ) edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_node ( ptr ) -> slots [ node -> parent_slot ] ; else edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_shortcut ( ptr ) -> next_node ; edit -> excised_meta [ 0 ] = assoc_array_node_to_ptr ( node ) ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[split<S2SV_blank>node]\\\\n\" , __func__ ) ; return true ; present_leaves_cluster_but_not_new_leaf : pr_devel ( \"present<S2SV_blank>leaves<S2SV_blank>cluster<S2SV_blank>but<S2SV_blank>not<S2SV_blank>new<S2SV_blank>leaf\\\\n\" ) ; new_n0 -> back_pointer = node -> back_pointer ; new_n0 -> parent_slot = node -> parent_slot ; new_n0 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = edit -> segment_cache [ 0 ] ; new_n1 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; edit -> adjust_count_on = new_n0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) new_n1 -> slots [ i ] = node -> slots [ i ] ; new_n0 -> slots [ edit -> segment_cache [ 0 ] ] = assoc_array_node_to_ptr ( new_n0 ) ; edit -> leaf_p = & new_n0 -> slots [ edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] ] ; edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_node ( node -> back_pointer ) -> slots [ node -> parent_slot ] ; edit -> set [ 0 ] . to = assoc_array_node_to_ptr ( new_n0 ) ; edit -> excised_meta [ 0 ] = assoc_array_node_to_ptr ( node ) ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[insert<S2SV_blank>node<S2SV_blank>before]\\\\n\" , __func__ ) ; return true ; all_leaves_cluster_together : pr_devel ( \"all<S2SV_blank>leaves<S2SV_blank>cluster<S2SV_blank>together\\\\n\" ) ; diff = INT_MAX ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { int x = ops -> diff_objects ( assoc_array_ptr_to_leaf ( node -> slots [ i ] ) , index_key ) ; if ( x < diff ) { BUG_ON ( x < 0 ) ; diff = x ; } } BUG_ON ( diff == INT_MAX ) ; BUG_ON ( diff < level + ASSOC_ARRAY_LEVEL_STEP ) ; keylen = round_up ( diff , ASSOC_ARRAY_KEY_CHUNK_SIZE ) ; keylen >>= ASSOC_ARRAY_KEY_CHUNK_SHIFT ; new_s0 = kzalloc ( sizeof ( struct assoc_array_shortcut ) + keylen * sizeof ( unsigned long ) , GFP_KERNEL ) ; if ( ! new_s0 ) return false ; edit -> new_meta [ 2 ] = assoc_array_shortcut_to_ptr ( new_s0 ) ; edit -> set [ 0 ] . to = assoc_array_shortcut_to_ptr ( new_s0 ) ; new_s0 -> back_pointer = node -> back_pointer ; new_s0 -> parent_slot = node -> parent_slot ; new_s0 -> next_node = assoc_array_node_to_ptr ( new_n0 ) ; new_n0 -> back_pointer = assoc_array_shortcut_to_ptr ( new_s0 ) ; new_n0 -> parent_slot = 0 ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = - 1 ; new_s0 -> skip_to_level = level = diff & ~ ASSOC_ARRAY_LEVEL_STEP_MASK ; pr_devel ( \"skip_to_level<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[diff<S2SV_blank>%d]\\\\n\" , level , diff ) ; BUG_ON ( level <= 0 ) ; for ( i = 0 ; i < keylen ; i ++ ) new_s0 -> index_key [ i ] = ops -> get_key_chunk ( index_key , i * ASSOC_ARRAY_KEY_CHUNK_SIZE ) ; blank = ULONG_MAX << ( level & ASSOC_ARRAY_KEY_CHUNK_MASK ) ; pr_devel ( \"blank<S2SV_blank>off<S2SV_blank>[%zu]<S2SV_blank>%d:<S2SV_blank>%lx\\\\n\" , keylen - 1 , level , blank ) ; new_s0 -> index_key [ keylen - 1 ] &= ~ blank ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; base_seg = ops -> get_object_key_chunk ( assoc_array_ptr_to_leaf ( ptr ) , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ i ] = base_seg & ASSOC_ARRAY_FAN_MASK ; } base_seg = ops -> get_key_chunk ( index_key , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] = base_seg & ASSOC_ARRAY_FAN_MASK ; goto do_split_node ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( assoc_array_ptr_is_leaf ( ptr ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010305\n\n```\nCWE-119 static int chmd_read_headers ( struct mspack_system * sys , struct mspack_file * fh , struct mschmd_header * chm , int entire ) { unsigned int section , name_len , x , errors , num_chunks ; unsigned char buf [ 0x54 ] , * chunk = NULL , * name , * p , * end ; struct mschmd_file * fi , * link = NULL ; off_t offset , length ; int num_entries ; chm -> files = NULL ; chm -> sysfiles = NULL ; chm -> chunk_cache = NULL ; chm -> sec0 . base . chm = chm ; chm -> sec0 . base . id = 0 ; chm -> sec1 . base . chm = chm ; chm -> sec1 . base . id = 1 ; chm -> sec1 . content = NULL ; chm -> sec1 . control = NULL ; chm -> sec1 . spaninfo = NULL ; chm -> sec1 . rtable = NULL ; if ( sys -> read ( fh , & buf [ 0 ] , chmhead_SIZEOF ) != chmhead_SIZEOF ) { return MSPACK_ERR_READ ; } if ( EndGetI32 ( & buf [ chmhead_Signature ] ) != 0x46535449 ) { return MSPACK_ERR_SIGNATURE ; } if ( memcmp ( & buf [ chmhead_GUID1 ] , & guids [ 0 ] , 32L ) != 0 ) { D ( ( \"incorrect<S2SV_blank>GUIDs\" ) ) return MSPACK_ERR_SIGNATURE ; } chm -> version = EndGetI32 ( & buf [ chmhead_Version ] ) ; chm -> timestamp = EndGetM32 ( & buf [ chmhead_Timestamp ] ) ; chm -> language = EndGetI32 ( & buf [ chmhead_LanguageID ] ) ; if ( chm -> version > 3 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>CHM<S2SV_blank>version<S2SV_blank>><S2SV_blank>3\" ) ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhst3_SIZEOF ) != chmhst3_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & offset , & buf [ chmhst_OffsetHS0 ] , sys , fh ) || read_off64 ( & chm -> dir_offset , & buf [ chmhst_OffsetHS1 ] , sys , fh ) || read_off64 ( & chm -> sec0 . offset , & buf [ chmhst3_OffsetCS0 ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs0_SIZEOF ) != chmhs0_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & chm -> length , & buf [ chmhs0_FileLen ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , chm -> dir_offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs1_SIZEOF ) != chmhs1_SIZEOF ) { return MSPACK_ERR_READ ; } chm -> dir_offset = sys -> tell ( fh ) ; chm -> chunk_size = EndGetI32 ( & buf [ chmhs1_ChunkSize ] ) ; chm -> density = EndGetI32 ( & buf [ chmhs1_Density ] ) ; chm -> depth = EndGetI32 ( & buf [ chmhs1_Depth ] ) ; chm -> index_root = EndGetI32 ( & buf [ chmhs1_IndexRoot ] ) ; chm -> num_chunks = EndGetI32 ( & buf [ chmhs1_NumChunks ] ) ; chm -> first_pmgl = EndGetI32 ( & buf [ chmhs1_FirstPMGL ] ) ; chm -> last_pmgl = EndGetI32 ( & buf [ chmhs1_LastPMGL ] ) ; if ( chm -> version < 3 ) { chm -> sec0 . offset = chm -> dir_offset + ( chm -> chunk_size * chm -> num_chunks ) ; } if ( chm -> sec0 . offset > chm -> length ) { D ( ( \"content<S2SV_blank>section<S2SV_blank>begins<S2SV_blank>after<S2SV_blank>file<S2SV_blank>has<S2SV_blank>ended\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> chunk_size < ( pmgl_Entries + 2 ) ) { D ( ( \"chunk<S2SV_blank>size<S2SV_blank>not<S2SV_blank>large<S2SV_blank>enough\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks == 0 ) { D ( ( \"no<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks > 100000 ) { D ( ( \"more<S2SV_blank>than<S2SV_blank>100,000<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( off_t ) chm -> chunk_size * ( off_t ) chm -> num_chunks > chm -> length ) { D ( ( \"chunks<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>entire<S2SV_blank>file\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( chm -> chunk_size & ( chm -> chunk_size - 1 ) ) != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>two\" ) ; } if ( chm -> first_pmgl != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>first<S2SV_blank>PMGL<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>not<S2SV_blank>zero\" ) ; } if ( chm -> first_pmgl > chm -> last_pmgl ) { D ( ( \"first<S2SV_blank>pmgl<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>after<S2SV_blank>last<S2SV_blank>pmgl<S2SV_blank>chunk\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> index_root != 0xFFFFFFFF && chm -> index_root >= chm -> num_chunks ) { D ( ( \"index_root<S2SV_blank>outside<S2SV_blank>valid<S2SV_blank>range\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ! entire ) { return MSPACK_ERR_OK ; } if ( ( x = chm -> first_pmgl ) != 0 ) { if ( sys -> seek ( fh , ( off_t ) ( x * chm -> chunk_size ) , MSPACK_SYS_SEEK_CUR ) ) { return MSPACK_ERR_SEEK ; } } num_chunks = chm -> last_pmgl - x + 1 ; if ( ! ( chunk = ( unsigned char * ) sys -> alloc ( sys , ( size_t ) chm -> chunk_size ) ) ) { return MSPACK_ERR_NOMEMORY ; } errors = 0 ; while ( num_chunks -- ) { if ( sys -> read ( fh , chunk , ( int ) chm -> chunk_size ) != ( int ) chm -> chunk_size ) { sys -> free ( chunk ) ; return MSPACK_ERR_READ ; } if ( EndGetI32 ( & chunk [ pmgl_Signature ] ) != 0x4C474D50 ) continue ; if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) < 2 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\" ) ; } if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) > ( ( int ) chm -> chunk_size - pmgl_Entries ) ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ; } p = & chunk [ pmgl_Entries ] ; end = & chunk [ chm -> chunk_size - 2 ] ; num_entries = EndGetI16 ( end ) ; while ( num_entries -- ) { READ_ENCINT ( name_len ) ; if ( name_len > ( unsigned int ) ( end - p ) ) goto chunk_end ; name = p ; p += name_len ; READ_ENCINT ( section ) ; READ_ENCINT ( offset ) ; READ_ENCINT ( length ) ; if ( name_len < 2 || ! name [ 0 ] || ! name [ 1 ] ) continue ; if ( ( offset == 0 ) && ( length == 0 ) ) { if ( ( name_len > 0 ) && ( name [ name_len - 1 ] == '/' ) ) continue ; } if ( section > 1 ) { sys -> message ( fh , \"invalid<S2SV_blank>section<S2SV_blank>number<S2SV_blank>\\'%u\\'.\" , section ) ; continue ; } if ( ! ( fi = ( struct mschmd_file * ) sys -> alloc ( sys , sizeof ( struct mschmd_file ) + name_len + 1 ) ) ) { sys -> free ( chunk ) ; return MSPACK_ERR_NOMEMORY ; } fi -> next = NULL ; fi -> filename = ( char * ) & fi [ 1 ] ; fi -> section = ( ( section == 0 ) ? ( struct mschmd_section * ) ( & chm -> sec0 ) : ( struct mschmd_section * ) ( & chm -> sec1 ) ) ; fi -> offset = offset ; fi -> length = length ; sys -> copy ( name , fi -> filename , ( size_t ) name_len ) ; fi -> filename [ name_len ] = '\\\\0' ; if ( name [ 0 ] == ':' && name [ 1 ] == ':' ) { <S2SV_StartBug> if ( memcmp ( & name [ 2 ] , & content_name [ 2 ] , 31L ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> if ( memcmp ( & name [ 33 ] , & content_name [ 33 ] , 8L ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> chm -> sec1 . content = fi ; <S2SV_EndBug> } <S2SV_StartBug> else if ( memcmp ( & name [ 33 ] , & control_name [ 33 ] , 11L ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> chm -> sec1 . control = fi ; <S2SV_EndBug> } <S2SV_StartBug> else if ( memcmp ( & name [ 33 ] , & spaninfo_name [ 33 ] , 8L ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> chm -> sec1 . spaninfo = fi ; <S2SV_EndBug> } else if ( memcmp ( & name [ 33 ] , & rtable_name [ 33 ] , 72L ) == 0 ) { chm -> sec1 . rtable = fi ; <S2SV_StartBug> } <S2SV_EndBug> } fi -> next = chm -> sysfiles ; chm -> sysfiles = fi ; } else { if ( link ) link -> next = fi ; else chm -> files = fi ; link = fi ; } } chunk_end : if ( num_entries >= 0 ) { D ( ( \"chunk<S2SV_blank>ended<S2SV_blank>before<S2SV_blank>all<S2SV_blank>entries<S2SV_blank>could<S2SV_blank>be<S2SV_blank>read\" ) ) errors ++ ; } } sys -> free ( chunk ) ; return ( errors > 0 ) ? MSPACK_ERR_DATAFORMAT : MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( name_len == 40 && memcmp ( name , content_name , 40 <S2SV_ModEnd> ) == 0 <S2SV_ModStart> 0 ) { chm -> sec1 . content = fi ; } else if ( name_len == 44 && memcmp ( name , control_name , 44 <S2SV_ModEnd> ) == 0 <S2SV_ModStart> -> sec1 . control <S2SV_ModEnd> = fi ; <S2SV_ModStart> else if ( name_len == 41 && memcmp ( name , spaninfo_name , 41 <S2SV_ModEnd> ) == 0 <S2SV_ModStart> -> sec1 . spaninfo <S2SV_ModEnd> = fi ; <S2SV_ModStart> else if ( name_len == 105 && memcmp ( name , rtable_name , 105 <S2SV_ModEnd> ) == 0 <S2SV_ModStart> -> sec1 . <S2SV_ModEnd> rtable = fi <S2SV_ModStart> = fi ; <S2SV_ModEnd> } fi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5273\n\n```\nCWE-59 int main ( int argc , char * * argv ) { setlocale ( LC_ALL , \"\" ) ; # if ENABLE_NLS bindtextdomain ( PACKAGE , LOCALEDIR ) ; textdomain ( PACKAGE ) ; # endif abrt_init ( argv ) ; const char * program_usage_string = _ ( \"&<S2SV_blank>[-y]<S2SV_blank>[-i<S2SV_blank>BUILD_IDS_FILE|-i<S2SV_blank>-]<S2SV_blank>[-e<S2SV_blank>PATH[:PATH]...]\\\\n\" \"\\\\t[-r<S2SV_blank>REPO]\\\\n\" \"\\\\n\" \"Installs<S2SV_blank>debuginfo<S2SV_blank>packages<S2SV_blank>for<S2SV_blank>all<S2SV_blank>build-ids<S2SV_blank>listed<S2SV_blank>in<S2SV_blank>BUILD_IDS_FILE<S2SV_blank>to\\\\n\" \"ABRT<S2SV_blank>system<S2SV_blank>cache.\" ) ; enum { OPT_v = 1 << 0 , OPT_y = 1 << 1 , OPT_i = 1 << 2 , OPT_e = 1 << 3 , OPT_r = 1 << 4 , OPT_s = 1 << 5 , } ; const char * build_ids = \"build_ids\" ; const char * exact = NULL ; const char * repo = NULL ; const char * size_mb = NULL ; struct options program_options [ ] = { OPT__VERBOSE ( & g_verbose ) , OPT_BOOL ( 'y' , \"yes\" , NULL , _ ( \"Noninteractive,<S2SV_blank>assume<S2SV_blank>\\'Yes\\'<S2SV_blank>to<S2SV_blank>all<S2SV_blank>questions\" ) ) , OPT_STRING ( 'i' , \"ids\" , & build_ids , \"BUILD_IDS_FILE\" , _ ( \"-<S2SV_blank>means<S2SV_blank>STDIN,<S2SV_blank>default:<S2SV_blank>build_ids\" ) ) , OPT_STRING ( 'e' , \"exact\" , & exact , \"EXACT\" , _ ( \"Download<S2SV_blank>only<S2SV_blank>specified<S2SV_blank>files\" ) ) , OPT_STRING ( 'r' , \"repo\" , & repo , \"REPO\" , _ ( \"Pattern<S2SV_blank>to<S2SV_blank>use<S2SV_blank>when<S2SV_blank>searching<S2SV_blank>for<S2SV_blank>repos,<S2SV_blank>default:<S2SV_blank>*debug*\" ) ) , OPT_STRING ( 's' , \"size_mb\" , & size_mb , \"SIZE_MB\" , _ ( \"Ignored<S2SV_blank>option\" ) ) , OPT_END ( ) } ; const unsigned opts = parse_opts ( argc , argv , program_options , program_usage_string ) ; const gid_t egid = getegid ( ) ; const gid_t rgid = getgid ( ) ; const uid_t euid = geteuid ( ) ; const gid_t ruid = getuid ( ) ; char * build_ids_self_fd = NULL ; if ( strcmp ( \"-\" , build_ids ) != 0 ) { if ( setregid ( egid , rgid ) < 0 ) perror_msg_and_die ( \"setregid(egid,<S2SV_blank>rgid)\" ) ; if ( setreuid ( euid , ruid ) < 0 ) perror_msg_and_die ( \"setreuid(euid,<S2SV_blank>ruid)\" ) ; const int build_ids_fd = open ( build_ids , O_RDONLY ) ; if ( setregid ( rgid , egid ) < 0 ) perror_msg_and_die ( \"setregid(rgid,<S2SV_blank>egid)\" ) ; if ( setreuid ( ruid , euid ) < 0 ) perror_msg_and_die ( \"setreuid(ruid,<S2SV_blank>euid)\" ) ; if ( build_ids_fd < 0 ) perror_msg_and_die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>file<S2SV_blank>\\'%s\\'\" , build_ids ) ; build_ids_self_fd = xasprintf ( \"/proc/self/fd/%d\" , build_ids_fd ) ; } <S2SV_StartBug> const char * args [ 11 ] ; <S2SV_EndBug> { const char * verbs [ ] = { \"\" , \"-v\" , \"-vv\" , \"-vvv\" } ; unsigned i = 0 ; args [ i ++ ] = EXECUTABLE ; args [ i ++ ] = \"--ids\" ; args [ i ++ ] = ( build_ids_self_fd != NULL ) ? build_ids_self_fd : \"-\" ; if ( g_verbose > 0 ) args [ i ++ ] = verbs [ g_verbose <= 3 ? g_verbose : 3 ] ; if ( ( opts & OPT_y ) ) args [ i ++ ] = \"-y\" ; if ( ( opts & OPT_e ) ) { args [ i ++ ] = \"--exact\" ; args [ i ++ ] = exact ; } if ( ( opts & OPT_r ) ) { args [ i ++ ] = \"--repo\" ; args [ i ++ ] = repo ; } <S2SV_StartBug> args [ i ++ ] = \"--\" ; <S2SV_EndBug> args [ i ] = NULL ; } if ( egid != rgid ) IGNORE_RESULT ( setregid ( egid , egid ) ) ; if ( euid != ruid ) { IGNORE_RESULT ( setreuid ( euid , euid ) ) ; # if 1 static const char * whitelist [ ] = { \"REPORT_CLIENT_SLAVE\" , \"LANG\" , } ; const size_t wlsize = sizeof ( whitelist ) / sizeof ( char * ) ; char * setlist [ sizeof ( whitelist ) / sizeof ( char * ) ] = { 0 } ; char * p = NULL ; for ( size_t i = 0 ; i < wlsize ; i ++ ) if ( ( p = getenv ( whitelist [ i ] ) ) != NULL ) setlist [ i ] = xstrdup ( p ) ; clearenv ( ) ; for ( size_t i = 0 ; i < wlsize ; i ++ ) if ( setlist [ i ] != NULL ) { xsetenv ( whitelist [ i ] , setlist [ i ] ) ; free ( setlist [ i ] ) ; } # else static const char forbid [ ] = \"LD_LIBRARY_PATH\" \"\\\\0\" \"LD_PRELOAD\" \"\\\\0\" \"LD_TRACE_LOADED_OBJECTS\" \"\\\\0\" \"LD_BIND_NOW\" \"\\\\0\" \"LD_AOUT_LIBRARY_PATH\" \"\\\\0\" \"LD_AOUT_PRELOAD\" \"\\\\0\" \"LD_NOWARN\" \"\\\\0\" \"LD_KEEPDIR\" \"\\\\0\" ; const char * p = forbid ; do { unsetenv ( p ) ; p += strlen ( p ) + 1 ; } while ( * p ) ; # endif char path_env [ ] = \"PATH=/usr/sbin:/sbin:/usr/bin:/bin:\" BIN_DIR \":\" SBIN_DIR ; if ( euid != 0 ) strcpy ( path_env , \"PATH=/usr/bin:/bin:\" BIN_DIR ) ; putenv ( path_env ) ; umask ( 0022 ) ; } <S2SV_StartBug> execvp ( EXECUTABLE , ( char * * ) args ) ; <S2SV_EndBug> error_msg_and_die ( \"Can\\'t<S2SV_blank>execute<S2SV_blank>%s\" , EXECUTABLE ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } char tmp_directory [ ] = LARGE_DATA_TMP_DIR \"/abrt-tmp-debuginfo.XXXXXX\" ; if ( mkdtemp ( tmp_directory ) == NULL ) perror_msg_and_die ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>working<S2SV_blank>directory\" ) ; log_info ( \"Created<S2SV_blank>working<S2SV_blank>directory:<S2SV_blank>%s\" , tmp_directory ) ; const char * args [ 13 <S2SV_ModEnd> ] ; { <S2SV_ModStart> ++ ] = \"--tmpdir\" ; args [ i ++ ] = tmp_directory ; args [ i ++ ] = <S2SV_ModStart> ) ; } pid_t pid = fork ( ) ; if ( pid < 0 ) perror_msg_and_die ( \"fork\" ) ; if ( pid == 0 ) { <S2SV_ModStart> ) ; } int status ; if ( safe_waitpid ( pid , & status , 0 ) < 0 ) perror_msg_and_die ( \"waitpid\" ) ; if ( rmdir ( tmp_directory ) >= 0 ) log_info ( \"Removed<S2SV_blank>working<S2SV_blank>directory:<S2SV_blank>%s\" , tmp_directory ) ; else if ( errno != ENOENT ) perror_msg ( \"Failed<S2SV_blank>to<S2SV_blank>remove<S2SV_blank>working<S2SV_blank>directory\" ) ; if ( WIFEXITED ( status ) ) return WEXITSTATUS ( status ) ; if ( WIFSIGNALED ( status ) ) error_msg_and_die ( \"Child<S2SV_blank>terminated<S2SV_blank>with<S2SV_blank>signal<S2SV_blank>%d\" , WTERMSIG ( status ) ) ; error_msg_and_die ( \"Child<S2SV_blank>exit<S2SV_blank>failed\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11884\n\n```\nCWE-77 static int do_hidp_sock_ioctl ( struct socket * sock , unsigned int cmd , void __user * argp ) { struct hidp_connadd_req ca ; struct hidp_conndel_req cd ; struct hidp_connlist_req cl ; struct hidp_conninfo ci ; struct socket * csock ; struct socket * isock ; int err ; BT_DBG ( \"cmd<S2SV_blank>%x<S2SV_blank>arg<S2SV_blank>%p\" , cmd , argp ) ; switch ( cmd ) { case HIDPCONNADD : if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; if ( copy_from_user ( & ca , argp , sizeof ( ca ) ) ) return - EFAULT ; csock = sockfd_lookup ( ca . ctrl_sock , & err ) ; if ( ! csock ) return err ; isock = sockfd_lookup ( ca . intr_sock , & err ) ; if ( ! isock ) { sockfd_put ( csock ) ; return err ; <S2SV_StartBug> } <S2SV_EndBug> err = hidp_connection_add ( & ca , csock , isock ) ; if ( ! err && copy_to_user ( argp , & ca , sizeof ( ca ) ) ) err = - EFAULT ; sockfd_put ( csock ) ; sockfd_put ( isock ) ; return err ; case HIDPCONNDEL : if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; if ( copy_from_user ( & cd , argp , sizeof ( cd ) ) ) return - EFAULT ; return hidp_connection_del ( & cd ) ; case HIDPGETCONNLIST : if ( copy_from_user ( & cl , argp , sizeof ( cl ) ) ) return - EFAULT ; if ( cl . cnum <= 0 ) return - EINVAL ; err = hidp_get_connlist ( & cl ) ; if ( ! err && copy_to_user ( argp , & cl , sizeof ( cl ) ) ) return - EFAULT ; return err ; case HIDPGETCONNINFO : if ( copy_from_user ( & ci , argp , sizeof ( ci ) ) ) return - EFAULT ; err = hidp_get_conninfo ( & ci ) ; if ( ! err && copy_to_user ( argp , & ci , sizeof ( ci ) ) ) return - EFAULT ; return err ; } return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } ca . name [ sizeof ( ca . name ) - 1 ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 struct sock * dccp_v4_request_recv_sock ( struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst ) { struct inet_request_sock * ireq ; struct inet_sock * newinet ; struct sock * newsk ; if ( sk_acceptq_is_full ( sk ) ) goto exit_overflow ; if ( dst == NULL && ( dst = inet_csk_route_req ( sk , req ) ) == NULL ) goto exit ; newsk = dccp_create_openreq_child ( sk , req , skb ) ; if ( newsk == NULL ) goto exit_nonewsk ; sk_setup_caps ( newsk , dst ) ; newinet = inet_sk ( newsk ) ; ireq = inet_rsk ( req ) ; newinet -> inet_daddr = ireq -> rmt_addr ; newinet -> inet_rcv_saddr = ireq -> loc_addr ; newinet -> inet_saddr = ireq -> loc_addr ; <S2SV_StartBug> newinet -> opt = ireq -> opt ; <S2SV_EndBug> ireq -> opt = NULL ; newinet -> mc_index = inet_iif ( skb ) ; newinet -> mc_ttl = ip_hdr ( skb ) -> ttl ; newinet -> inet_id = jiffies ; dccp_sync_mss ( newsk , dst_mtu ( dst ) ) ; if ( __inet_inherit_port ( sk , newsk ) < 0 ) { sock_put ( newsk ) ; goto exit ; } __inet_hash_nolisten ( newsk , NULL ) ; return newsk ; exit_overflow : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; exit_nonewsk : dst_release ( dst ) ; exit : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; newinet -> inet_opt <S2SV_ModEnd> = ireq ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 u_int fr_print ( netdissect_options * ndo , register const u_char * p , u_int length ) { int ret ; uint16_t extracted_ethertype ; u_int dlci ; u_int addr_len ; uint16_t nlpid ; u_int hdr_len ; uint8_t flags [ 4 ] ; ret = parse_q922_addr ( ndo , p , & dlci , & addr_len , flags , length ) ; if ( ret == - 1 ) goto trunc ; if ( ret == 0 ) { ND_PRINT ( ( ndo , \"Q.922,<S2SV_blank>invalid<S2SV_blank>address\" ) ) ; return 0 ; } ND_TCHECK ( p [ addr_len ] ) ; if ( length < addr_len + 1 ) goto trunc ; if ( p [ addr_len ] != LLC_UI && dlci != 0 ) { if ( ! ND_TTEST2 ( p [ addr_len ] , 2 ) || length < addr_len + 2 ) { ND_PRINT ( ( ndo , \"UI<S2SV_blank>%02x!<S2SV_blank>\" , p [ addr_len ] ) ) ; } else { extracted_ethertype = EXTRACT_16BITS ( p + addr_len ) ; if ( ndo -> ndo_eflag ) fr_hdr_print ( ndo , length , addr_len , dlci , flags , extracted_ethertype ) ; if ( ethertype_print ( ndo , extracted_ethertype , p + addr_len + ETHERTYPE_LEN , length - addr_len - ETHERTYPE_LEN , ndo -> ndo_snapend - p - addr_len - ETHERTYPE_LEN , NULL , NULL ) == 0 ) ND_PRINT ( ( ndo , \"UI<S2SV_blank>%02x!<S2SV_blank>\" , p [ addr_len ] ) ) ; else return addr_len + 2 ; } } ND_TCHECK ( p [ addr_len + 1 ] ) ; if ( length < addr_len + 2 ) goto trunc ; if ( p [ addr_len + 1 ] == 0 ) { if ( addr_len != 3 ) ND_PRINT ( ( ndo , \"Pad!<S2SV_blank>\" ) ) ; hdr_len = addr_len + 1 + 1 + 1 ; } else { if ( addr_len == 3 ) ND_PRINT ( ( ndo , \"No<S2SV_blank>pad!<S2SV_blank>\" ) ) ; hdr_len = addr_len + 1 + 1 ; } ND_TCHECK ( p [ hdr_len - 1 ] ) ; if ( length < hdr_len ) goto trunc ; nlpid = p [ hdr_len - 1 ] ; if ( ndo -> ndo_eflag ) fr_hdr_print ( ndo , length , addr_len , dlci , flags , nlpid ) ; p += hdr_len ; length -= hdr_len ; switch ( nlpid ) { case NLPID_IP : ip_print ( ndo , p , length ) ; break ; case NLPID_IP6 : ip6_print ( ndo , p , length ) ; break ; case NLPID_CLNP : case NLPID_ESIS : case NLPID_ISIS : <S2SV_StartBug> isoclns_print ( ndo , p - 1 , length + 1 , ndo -> ndo_snapend - p + 1 ) ; <S2SV_EndBug> break ; case NLPID_SNAP : if ( snap_print ( ndo , p , length , ndo -> ndo_snapend - p , NULL , NULL , 0 ) == 0 ) { if ( ! ndo -> ndo_eflag ) fr_hdr_print ( ndo , length + hdr_len , hdr_len , dlci , flags , nlpid ) ; if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p - hdr_len , length + hdr_len ) ; } break ; case NLPID_Q933 : q933_print ( ndo , p , length ) ; break ; case NLPID_MFR : frf15_print ( ndo , p , length ) ; break ; case NLPID_PPP : ppp_print ( ndo , p , length ) ; break ; default : if ( ! ndo -> ndo_eflag ) fr_hdr_print ( ndo , length + hdr_len , addr_len , dlci , flags , nlpid ) ; if ( ! ndo -> ndo_xflag ) ND_DEFAULTPRINT ( p , length ) ; } return hdr_len ; trunc : ND_PRINT ( ( ndo , \"[|fr]\" ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length + 1 ) ; break ; case NLPID_SNAP : if ( snap_print ( ndo , p , length <S2SV_ModStart> ndo_snapend - p <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-9434\n\n```\nCWE-295 int luaopen_x509 ( lua_State * L ) { auxiliar_newclass ( L , \"openssl.x509\" , x509_funcs ) ; lua_newtable ( L ) ; luaL_setfuncs ( L , R , 0 ) ; openssl_register_xname ( L ) ; lua_setfield ( L , - 2 , \"name\" ) ; openssl_register_xattribute ( L ) ; lua_setfield ( L , - 2 , \"attribute\" ) ; openssl_register_xextension ( L ) ; lua_setfield ( L , - 2 , \"extension\" ) ; openssl_register_xstore ( L ) ; lua_setfield ( L , - 2 , \"store\" ) ; openssl_register_xalgor ( L ) ; lua_setfield ( L , - 2 , \"algor\" ) ; luaopen_x509_req ( L ) ; lua_setfield ( L , - 2 , \"req\" ) ; luaopen_x509_crl ( L ) ; lua_setfield ( L , - 2 , \"crl\" ) ; lua_pushliteral ( L , \"version\" ) ; lua_pushliteral ( L , MYVERSION ) ; lua_settable ( L , - 3 ) ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 3 ) ; # if OPENSSL_VERSION_NUMBER > 0x10002000L lua_pushliteral ( L , \"check_flag\" ) ; lua_newtable ( L ) ; auxiliar_enumerate ( L , - 1 , check_flags_const ) ; lua_settable ( L , - 3 ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 void perf_event_enable ( struct perf_event * event ) { <S2SV_StartBug> struct perf_event_context * ctx = event -> ctx ; <S2SV_EndBug> struct task_struct * task = ctx -> task ; if ( ! task ) { cpu_function_call ( event -> cpu , __perf_event_enable , event ) ; return ; } raw_spin_lock_irq ( & ctx -> lock ) ; if ( event -> state >= PERF_EVENT_STATE_INACTIVE ) goto out ; if ( event -> state == PERF_EVENT_STATE_ERROR ) event -> state = PERF_EVENT_STATE_OFF ; retry : if ( ! ctx -> is_active ) { __perf_event_mark_enabled ( event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } raw_spin_unlock_irq ( & ctx -> lock ) ; if ( ! task_function_call ( task , __perf_event_enable , event ) ) return ; raw_spin_lock_irq ( & ctx -> lock ) ; if ( ctx -> is_active && event -> state == PERF_EVENT_STATE_OFF ) { task = ctx -> task ; goto retry ; } out : raw_spin_unlock_irq ( & ctx -> lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event_context * ctx ; ctx = perf_event_ctx_lock <S2SV_ModEnd> ( event ) <S2SV_ModStart> event ) ; _perf_event_enable ( event ) ; perf_event_ctx_unlock ( event , ctx <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8955\n\n```\nCWE-264 static int <S2SV_StartBug> validate_event ( struct pmu_hw_events * hw_events , <S2SV_EndBug> struct perf_event * event ) { <S2SV_StartBug> struct arm_pmu * armpmu = to_arm_pmu ( event -> pmu ) ; <S2SV_EndBug> struct hw_perf_event fake_event = event -> hw ; struct pmu * leader_pmu = event -> group_leader -> pmu ; if ( is_software_event ( event ) ) return 1 ; <S2SV_StartBug> if ( event -> pmu != leader_pmu || event -> state < PERF_EVENT_STATE_OFF ) <S2SV_EndBug> return 1 ; if ( event -> state == PERF_EVENT_STATE_OFF && ! event -> attr . enable_on_exec ) return 1 ; <S2SV_StartBug> return armpmu -> get_event_idx ( hw_events , & fake_event ) >= 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int validate_event ( struct pmu * pmu , <S2SV_ModStart> arm_pmu * armpmu <S2SV_ModEnd> ; struct hw_perf_event <S2SV_ModStart> -> pmu != pmu ) return 0 ; if ( event -> pmu != <S2SV_ModStart> return 1 ; armpmu = to_arm_pmu ( event -> pmu ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-9336\n\n```\nCWE-415 static BOOL GetStartupData ( HANDLE pipe , STARTUP_DATA * sud ) { size_t size , len ; <S2SV_StartBug> BOOL ret = FALSE ; <S2SV_EndBug> WCHAR * data = NULL ; DWORD bytes , read ; bytes = PeekNamedPipeAsync ( pipe , 1 , & exit_event ) ; if ( bytes == 0 ) { MsgToEventLog ( M_SYSERR , TEXT ( \"PeekNamedPipeAsync<S2SV_blank>failed\" ) ) ; ReturnLastError ( pipe , L\"PeekNamedPipeAsync\" ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } size = bytes / sizeof ( * data ) ; if ( size == 0 ) { MsgToEventLog ( M_SYSERR , TEXT ( \"malformed<S2SV_blank>startup<S2SV_blank>data:<S2SV_blank>1<S2SV_blank>byte<S2SV_blank>received\" ) ) ; ReturnError ( pipe , ERROR_STARTUP_DATA , L\"GetStartupData\" , 1 , & exit_event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } data = malloc ( bytes ) ; if ( data == NULL ) { MsgToEventLog ( M_SYSERR , TEXT ( \"malloc<S2SV_blank>failed\" ) ) ; ReturnLastError ( pipe , L\"malloc\" ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } read = ReadPipeAsync ( pipe , data , bytes , 1 , & exit_event ) ; if ( bytes != read ) { MsgToEventLog ( M_SYSERR , TEXT ( \"ReadPipeAsync<S2SV_blank>failed\" ) ) ; ReturnLastError ( pipe , L\"ReadPipeAsync\" ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } if ( data [ size - 1 ] != 0 ) { MsgToEventLog ( M_ERR , TEXT ( \"Startup<S2SV_blank>data<S2SV_blank>is<S2SV_blank>not<S2SV_blank>NULL<S2SV_blank>terminated\" ) ) ; ReturnError ( pipe , ERROR_STARTUP_DATA , L\"GetStartupData\" , 1 , & exit_event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } sud -> directory = data ; len = wcslen ( sud -> directory ) + 1 ; size -= len ; if ( size <= 0 ) { MsgToEventLog ( M_ERR , TEXT ( \"Startup<S2SV_blank>data<S2SV_blank>ends<S2SV_blank>at<S2SV_blank>working<S2SV_blank>directory\" ) ) ; ReturnError ( pipe , ERROR_STARTUP_DATA , L\"GetStartupData\" , 1 , & exit_event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } sud -> options = sud -> directory + len ; len = wcslen ( sud -> options ) + 1 ; size -= len ; if ( size <= 0 ) { MsgToEventLog ( M_ERR , TEXT ( \"Startup<S2SV_blank>data<S2SV_blank>ends<S2SV_blank>at<S2SV_blank>command<S2SV_blank>line<S2SV_blank>options\" ) ) ; ReturnError ( pipe , ERROR_STARTUP_DATA , L\"GetStartupData\" , 1 , & exit_event ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } sud -> std_input = sud -> options + len ; <S2SV_StartBug> data = NULL ; <S2SV_EndBug> <S2SV_StartBug> ret = TRUE ; <S2SV_EndBug> out : free ( data ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , len ; <S2SV_ModEnd> WCHAR * data <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } size <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } data <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } read <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } sud <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } sud <S2SV_ModStart> ) ; goto err <S2SV_ModEnd> ; } sud <S2SV_ModStart> + len ; return TRUE ; err : sud -> directory <S2SV_ModEnd> = NULL ; <S2SV_ModStart> = NULL ; <S2SV_ModEnd> free ( data <S2SV_ModStart> ) ; return FALSE <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int adjust_ptr_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , const struct bpf_reg_state * ptr_reg , const struct bpf_reg_state * off_reg ) { struct bpf_verifier_state * vstate = env -> cur_state ; struct bpf_func_state * state = vstate -> frame [ vstate -> curframe ] ; struct bpf_reg_state * regs = state -> regs , * dst_reg ; bool known = tnum_is_const ( off_reg -> var_off ) ; s64 smin_val = off_reg -> smin_value , smax_val = off_reg -> smax_value , smin_ptr = ptr_reg -> smin_value , smax_ptr = ptr_reg -> smax_value ; u64 umin_val = off_reg -> umin_value , umax_val = off_reg -> umax_value , umin_ptr = ptr_reg -> umin_value , umax_ptr = ptr_reg -> umax_value ; u32 dst = insn -> dst_reg , src = insn -> src_reg ; <S2SV_StartBug> u8 opcode = BPF_OP ( insn -> code ) ; <S2SV_EndBug> dst_reg = & regs [ dst ] ; if ( ( known && ( smin_val != smax_val || umin_val != umax_val ) ) || smin_val > smax_val || umin_val > umax_val ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { verbose ( env , \"R%d<S2SV_blank>32-bit<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } switch ( ptr_reg -> type ) { case PTR_TO_MAP_VALUE_OR_NULL : verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>prohibited,<S2SV_blank>null-check<S2SV_blank>it<S2SV_blank>first\\\\n\" , dst , reg_type_str [ ptr_reg -> type ] ) ; return - EACCES ; case CONST_PTR_TO_MAP : case PTR_TO_PACKET_END : case PTR_TO_SOCKET : case PTR_TO_SOCKET_OR_NULL : verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>prohibited\\\\n\" , dst , reg_type_str [ ptr_reg -> type ] ) ; return - EACCES ; case PTR_TO_MAP_VALUE : if ( ! env -> allow_ptr_leaks && ! known && ( smin_val < 0 ) != ( smax_val < 0 ) ) { verbose ( env , \"R%d<S2SV_blank>has<S2SV_blank>unknown<S2SV_blank>scalar<S2SV_blank>with<S2SV_blank>mixed<S2SV_blank>signed<S2SV_blank>bounds,<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>with<S2SV_blank>it<S2SV_blank>prohibited<S2SV_blank>for<S2SV_blank>!root\\\\n\" , off_reg == dst_reg ? dst : src ) ; return - EACCES ; } default : break ; } dst_reg -> type = ptr_reg -> type ; dst_reg -> id = ptr_reg -> id ; if ( ! check_reg_sane_offset ( env , off_reg , ptr_reg -> type ) || ! check_reg_sane_offset ( env , ptr_reg , ptr_reg -> type ) ) return - EINVAL ; switch ( opcode ) { case BPF_ADD : <S2SV_StartBug> if ( known && ( ptr_reg -> off + smin_val == <S2SV_EndBug> ( s64 ) ( s32 ) ( ptr_reg -> off + smin_val ) ) ) { dst_reg -> smin_value = smin_ptr ; dst_reg -> smax_value = smax_ptr ; dst_reg -> umin_value = umin_ptr ; dst_reg -> umax_value = umax_ptr ; dst_reg -> var_off = ptr_reg -> var_off ; dst_reg -> off = ptr_reg -> off + smin_val ; dst_reg -> raw = ptr_reg -> raw ; break ; } if ( signed_add_overflows ( smin_ptr , smin_val ) || signed_add_overflows ( smax_ptr , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = smin_ptr + smin_val ; dst_reg -> smax_value = smax_ptr + smax_val ; } if ( umin_ptr + umin_val < umin_ptr || umax_ptr + umax_val < umax_ptr ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value = umin_ptr + umin_val ; dst_reg -> umax_value = umax_ptr + umax_val ; } dst_reg -> var_off = tnum_add ( ptr_reg -> var_off , off_reg -> var_off ) ; dst_reg -> off = ptr_reg -> off ; dst_reg -> raw = ptr_reg -> raw ; if ( reg_is_pkt_pointer ( ptr_reg ) ) { dst_reg -> id = ++ env -> id_gen ; dst_reg -> raw = 0 ; } break ; case BPF_SUB : <S2SV_StartBug> if ( dst_reg == off_reg ) { <S2SV_EndBug> verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>subtract<S2SV_blank>pointer<S2SV_blank>from<S2SV_blank>scalar\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == PTR_TO_STACK ) { verbose ( env , \"R%d<S2SV_blank>subtraction<S2SV_blank>from<S2SV_blank>stack<S2SV_blank>pointer<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } if ( known && ( ptr_reg -> off - smin_val == ( s64 ) ( s32 ) ( ptr_reg -> off - smin_val ) ) ) { dst_reg -> smin_value = smin_ptr ; dst_reg -> smax_value = smax_ptr ; dst_reg -> umin_value = umin_ptr ; dst_reg -> umax_value = umax_ptr ; dst_reg -> var_off = ptr_reg -> var_off ; dst_reg -> id = ptr_reg -> id ; dst_reg -> off = ptr_reg -> off - smin_val ; dst_reg -> raw = ptr_reg -> raw ; break ; } if ( signed_sub_overflows ( smin_ptr , smax_val ) || signed_sub_overflows ( smax_ptr , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = smin_ptr - smax_val ; dst_reg -> smax_value = smax_ptr - smin_val ; } if ( umin_ptr < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value = umin_ptr - umax_val ; dst_reg -> umax_value = umax_ptr - umin_val ; } dst_reg -> var_off = tnum_sub ( ptr_reg -> var_off , off_reg -> var_off ) ; dst_reg -> off = ptr_reg -> off ; dst_reg -> raw = ptr_reg -> raw ; if ( reg_is_pkt_pointer ( ptr_reg ) ) { dst_reg -> id = ++ env -> id_gen ; if ( smin_val < 0 ) dst_reg -> raw = 0 ; } break ; case BPF_AND : case BPF_OR : case BPF_XOR : verbose ( env , \"R%d<S2SV_blank>bitwise<S2SV_blank>operator<S2SV_blank>%s<S2SV_blank>on<S2SV_blank>pointer<S2SV_blank>prohibited\\\\n\" , dst , bpf_alu_string [ opcode >> 4 ] ) ; return - EACCES ; default : verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>with<S2SV_blank>%s<S2SV_blank>operator<S2SV_blank>prohibited\\\\n\" , dst , bpf_alu_string [ opcode >> 4 ] ) ; return - EACCES ; } if ( ! check_reg_sane_offset ( env , dst_reg , ptr_reg -> type ) ) return - EINVAL ; __update_reg_bounds ( dst_reg ) ; __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; if ( ! env -> allow_ptr_leaks ) { if ( dst_reg -> type == PTR_TO_MAP_VALUE && check_map_access ( env , dst , dst_reg -> off , 1 , false ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>of<S2SV_blank>map<S2SV_blank>value<S2SV_blank>goes<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range,<S2SV_blank>\" \"prohibited<S2SV_blank>for<S2SV_blank>!root\\\\n\" , dst ) ; return - EACCES ; } else if ( dst_reg -> type == PTR_TO_STACK && check_stack_access ( env , dst_reg , dst_reg -> off + dst_reg -> var_off . value , 1 ) ) { verbose ( env , \"R%d<S2SV_blank>stack<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>goes<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range,<S2SV_blank>\" \"prohibited<S2SV_blank>for<S2SV_blank>!root\\\\n\" , dst ) ; return - EACCES ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> code ) ; int ret <S2SV_ModStart> case BPF_ADD : ret = sanitize_ptr_alu ( env , insn , ptr_reg , dst_reg , smin_val < 0 ) ; if ( ret < 0 ) { verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>add<S2SV_blank>from<S2SV_blank>different<S2SV_blank>maps<S2SV_blank>or<S2SV_blank>paths\\\\n\" , dst ) ; return ret ; } <S2SV_ModStart> case BPF_SUB : ret = sanitize_ptr_alu ( env , insn , ptr_reg , dst_reg , smin_val < 0 ) ; if ( ret < 0 ) { verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>sub<S2SV_blank>from<S2SV_blank>different<S2SV_blank>maps<S2SV_blank>or<S2SV_blank>paths\\\\n\" , dst ) ; return ret ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext4_xattr_block_set ( handle_t * handle , struct inode * inode , struct ext4_xattr_info * i , struct ext4_xattr_block_find * bs ) { struct super_block * sb = inode -> i_sb ; struct buffer_head * new_bh = NULL ; struct ext4_xattr_search * s = & bs -> s ; <S2SV_StartBug> struct mb_cache_entry * ce = NULL ; <S2SV_EndBug> int error = 0 ; <S2SV_StartBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; <S2SV_EndBug> # define header ( x ) ( ( struct ext4_xattr_header * ) ( x ) ) if ( i -> value && i -> value_len > sb -> s_blocksize ) return - ENOSPC ; if ( s -> base ) { <S2SV_StartBug> ce = mb_cache_entry_get ( ext4_mb_cache , bs -> bh -> b_bdev , <S2SV_EndBug> bs -> bh -> b_blocknr ) ; BUFFER_TRACE ( bs -> bh , \"get_write_access\" ) ; error = ext4_journal_get_write_access ( handle , bs -> bh ) ; if ( error ) goto cleanup ; lock_buffer ( bs -> bh ) ; if ( header ( s -> base ) -> h_refcount == cpu_to_le32 ( 1 ) ) { <S2SV_StartBug> if ( ce ) { <S2SV_EndBug> mb_cache_entry_free ( ce ) ; ce = NULL ; } ea_bdebug ( bs -> bh , \"modifying<S2SV_blank>in-place\" ) ; error = ext4_xattr_set_entry ( i , s ) ; if ( ! error ) { if ( ! IS_LAST_ENTRY ( s -> first ) ) ext4_xattr_rehash ( header ( s -> base ) , s -> here ) ; ext4_xattr_cache_insert ( ext4_mb_cache , bs -> bh ) ; } unlock_buffer ( bs -> bh ) ; if ( error == - EFSCORRUPTED ) goto bad_block ; if ( ! error ) error = ext4_handle_dirty_xattr_block ( handle , inode , bs -> bh ) ; if ( error ) goto cleanup ; goto inserted ; } else { int offset = ( char * ) s -> here - bs -> bh -> b_data ; unlock_buffer ( bs -> bh ) ; <S2SV_StartBug> if ( ce ) { <S2SV_EndBug> mb_cache_entry_release ( ce ) ; ce = NULL ; } ea_bdebug ( bs -> bh , \"cloning\" ) ; s -> base = kmalloc ( bs -> bh -> b_size , GFP_NOFS ) ; error = - ENOMEM ; if ( s -> base == NULL ) goto cleanup ; memcpy ( s -> base , BHDR ( bs -> bh ) , bs -> bh -> b_size ) ; s -> first = ENTRY ( header ( s -> base ) + 1 ) ; header ( s -> base ) -> h_refcount = cpu_to_le32 ( 1 ) ; s -> here = ENTRY ( s -> base + offset ) ; s -> end = s -> base + bs -> bh -> b_size ; } } else { s -> base = kzalloc ( sb -> s_blocksize , GFP_NOFS ) ; error = - ENOMEM ; if ( s -> base == NULL ) goto cleanup ; header ( s -> base ) -> h_magic = cpu_to_le32 ( EXT4_XATTR_MAGIC ) ; header ( s -> base ) -> h_blocks = cpu_to_le32 ( 1 ) ; header ( s -> base ) -> h_refcount = cpu_to_le32 ( 1 ) ; s -> first = ENTRY ( header ( s -> base ) + 1 ) ; s -> here = ENTRY ( header ( s -> base ) + 1 ) ; s -> end = s -> base + sb -> s_blocksize ; } error = ext4_xattr_set_entry ( i , s ) ; if ( error == - EFSCORRUPTED ) goto bad_block ; if ( error ) goto cleanup ; if ( ! IS_LAST_ENTRY ( s -> first ) ) ext4_xattr_rehash ( header ( s -> base ) , s -> here ) ; inserted : if ( ! IS_LAST_ENTRY ( s -> first ) ) { new_bh = ext4_xattr_cache_find ( inode , header ( s -> base ) , & ce ) ; if ( new_bh ) { if ( new_bh == bs -> bh ) ea_bdebug ( new_bh , \"keeping\" ) ; else { error = dquot_alloc_block ( inode , EXT4_C2B ( EXT4_SB ( sb ) , 1 ) ) ; if ( error ) goto cleanup ; BUFFER_TRACE ( new_bh , \"get_write_access\" ) ; error = ext4_journal_get_write_access ( handle , new_bh ) ; if ( error ) goto cleanup_dquot ; lock_buffer ( new_bh ) ; <S2SV_StartBug> le32_add_cpu ( & BHDR ( new_bh ) -> h_refcount , 1 ) ; <S2SV_EndBug> ea_bdebug ( new_bh , \"reusing;<S2SV_blank>refcount<S2SV_blank>now=%d\" , le32_to_cpu ( BHDR ( new_bh ) -> h_refcount ) ) ; unlock_buffer ( new_bh ) ; error = ext4_handle_dirty_xattr_block ( handle , inode , new_bh ) ; if ( error ) goto cleanup_dquot ; } <S2SV_StartBug> mb_cache_entry_release ( ce ) ; <S2SV_EndBug> ce = NULL ; } else if ( bs -> bh && s -> base == bs -> bh -> b_data ) { ea_bdebug ( bs -> bh , \"keeping<S2SV_blank>this<S2SV_blank>block\" ) ; new_bh = bs -> bh ; get_bh ( new_bh ) ; } else { ext4_fsblk_t goal , block ; goal = ext4_group_first_block_no ( sb , EXT4_I ( inode ) -> i_block_group ) ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) goal = goal & EXT4_MAX_BLOCK_FILE_PHYS ; block = ext4_new_meta_blocks ( handle , inode , goal , 0 , NULL , & error ) ; if ( error ) goto cleanup ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) BUG_ON ( block > EXT4_MAX_BLOCK_FILE_PHYS ) ; ea_idebug ( inode , \"creating<S2SV_blank>block<S2SV_blank>%llu\" , ( unsigned long long ) block ) ; new_bh = sb_getblk ( sb , block ) ; if ( unlikely ( ! new_bh ) ) { error = - ENOMEM ; getblk_failed : ext4_free_blocks ( handle , inode , NULL , block , 1 , EXT4_FREE_BLOCKS_METADATA ) ; goto cleanup ; } lock_buffer ( new_bh ) ; error = ext4_journal_get_create_access ( handle , new_bh ) ; if ( error ) { unlock_buffer ( new_bh ) ; error = - EIO ; goto getblk_failed ; } memcpy ( new_bh -> b_data , s -> base , new_bh -> b_size ) ; set_buffer_uptodate ( new_bh ) ; unlock_buffer ( new_bh ) ; ext4_xattr_cache_insert ( ext4_mb_cache , new_bh ) ; error = ext4_handle_dirty_xattr_block ( handle , inode , new_bh ) ; if ( error ) goto cleanup ; } } EXT4_I ( inode ) -> i_file_acl = new_bh ? new_bh -> b_blocknr : 0 ; if ( bs -> bh && bs -> bh != new_bh ) ext4_xattr_release_block ( handle , inode , bs -> bh ) ; error = 0 ; cleanup : if ( ce ) <S2SV_StartBug> mb_cache_entry_release ( ce ) ; <S2SV_EndBug> brelse ( new_bh ) ; if ( ! ( bs -> bh && s -> base == bs -> bh -> b_data ) ) kfree ( s -> base ) ; return error ; cleanup_dquot : dquot_free_block ( inode , EXT4_C2B ( EXT4_SB ( sb ) , 1 ) ) ; goto cleanup ; bad_block : EXT4_ERROR_INODE ( inode , \"bad<S2SV_blank>block<S2SV_blank>%llu\" , EXT4_I ( inode ) -> i_file_acl ) ; goto cleanup ; # undef header }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ; struct mb2_cache_entry <S2SV_ModEnd> * ce = <S2SV_ModStart> 0 ; struct mb2_cache <S2SV_ModEnd> * ext4_mb_cache = <S2SV_ModStart> base ) { <S2SV_ModEnd> BUFFER_TRACE ( bs <S2SV_ModStart> ) ) { __u32 hash = le32_to_cpu ( BHDR ( bs -> bh ) -> h_hash ) ; mb2_cache_entry_delete_block ( ext4_mb_cache , hash , bs -> bh -> b_blocknr ) ; <S2SV_ModEnd> ea_bdebug ( bs <S2SV_ModStart> bh ) ; <S2SV_ModEnd> ea_bdebug ( bs <S2SV_ModStart> new_bh ) ; if ( hlist_bl_unhashed ( & ce -> e_hash_list ) ) { unlock_buffer ( new_bh ) ; dquot_free_block ( inode , EXT4_C2B ( EXT4_SB ( sb ) , 1 ) ) ; brelse ( new_bh ) ; mb2_cache_entry_put ( ext4_mb_cache , ce ) ; ce = NULL ; new_bh = NULL ; goto inserted ; } <S2SV_ModStart> cleanup_dquot ; } mb2_cache_entry_touch ( ext4_mb_cache , ce ) ; mb2_cache_entry_put ( ext4_mb_cache , <S2SV_ModEnd> ce ) ; <S2SV_ModStart> ( ce ) mb2_cache_entry_put ( ext4_mb_cache , <S2SV_ModEnd> ce ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_iht4x4_16_add_sse2 ( const int16_t * input , uint8_t * dest , int stride , int tx_type ) { __m128i in [ 2 ] ; const __m128i zero = _mm_setzero_si128 ( ) ; const __m128i eight = _mm_set1_epi16 ( 8 ) ; in [ 0 ] = _mm_loadu_si128 ( ( const __m128i * ) ( input ) ) ; in [ 1 ] = _mm_loadu_si128 ( ( const __m128i * ) ( input + 8 ) ) ; switch ( tx_type ) { case 0 : idct4_sse2 ( in ) ; idct4_sse2 ( in ) ; break ; case 1 : idct4_sse2 ( in ) ; iadst4_sse2 ( in ) ; break ; case 2 : iadst4_sse2 ( in ) ; idct4_sse2 ( in ) ; break ; case 3 : iadst4_sse2 ( in ) ; iadst4_sse2 ( in ) ; break ; default : assert ( 0 ) ; break ; } in [ 0 ] = _mm_add_epi16 ( in [ 0 ] , eight ) ; in [ 1 ] = _mm_add_epi16 ( in [ 1 ] , eight ) ; in [ 0 ] = _mm_srai_epi16 ( in [ 0 ] , 4 ) ; in [ 1 ] = _mm_srai_epi16 ( in [ 1 ] , 4 ) ; { __m128i d0 = _mm_cvtsi32_si128 ( * ( const int * ) ( dest ) ) ; __m128i d2 = _mm_cvtsi32_si128 ( * ( const int * ) ( dest + stride * 2 ) ) ; d0 = _mm_unpacklo_epi32 ( d0 , _mm_cvtsi32_si128 ( * ( const int * ) ( dest + stride ) ) ) ; d2 = _mm_unpacklo_epi32 ( d2 , _mm_cvtsi32_si128 ( * ( const int * ) ( dest + stride * 3 ) ) ) ; d0 = _mm_unpacklo_epi8 ( d0 , zero ) ; d2 = _mm_unpacklo_epi8 ( d2 , zero ) ; d0 = _mm_add_epi16 ( d0 , in [ 0 ] ) ; d2 = _mm_add_epi16 ( d2 , in [ 1 ] ) ; d0 = _mm_packus_epi16 ( d0 , d2 ) ; * ( int * ) dest = _mm_cvtsi128_si32 ( d0 ) ; d0 = _mm_srli_si128 ( d0 , 4 ) ; * ( int * ) ( dest + stride ) = _mm_cvtsi128_si32 ( d0 ) ; d0 = _mm_srli_si128 ( d0 , 4 ) ; * ( int * ) ( dest + stride * 2 ) = _mm_cvtsi128_si32 ( d0 ) ; d0 = _mm_srli_si128 ( d0 , 4 ) ; * ( int * ) ( dest + stride * 3 ) = _mm_cvtsi128_si32 ( d0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3698\n\n```\nCWE-284 static int myrecvfrom6 ( int sockfd , void * buf , size_t * buflen , int flags , <S2SV_StartBug> struct in6_addr * addr , uint32_t * ifindex ) <S2SV_EndBug> { struct sockaddr_in6 sin6 ; <S2SV_StartBug> unsigned char cbuf [ CMSG_SPACE ( sizeof ( struct in6_pktinfo ) ) ] ; <S2SV_EndBug> struct iovec iovec ; struct msghdr msghdr ; struct cmsghdr * cmsghdr ; ssize_t len ; iovec . iov_len = * buflen ; iovec . iov_base = buf ; memset ( & msghdr , 0 , sizeof ( msghdr ) ) ; msghdr . msg_name = & sin6 ; msghdr . msg_namelen = sizeof ( sin6 ) ; msghdr . msg_iov = & iovec ; msghdr . msg_iovlen = 1 ; msghdr . msg_control = cbuf ; msghdr . msg_controllen = sizeof ( cbuf ) ; len = recvmsg ( sockfd , & msghdr , flags ) ; if ( len == - 1 ) return - errno ; * buflen = len ; * ifindex = sin6 . sin6_scope_id ; for ( cmsghdr = CMSG_FIRSTHDR ( & msghdr ) ; cmsghdr ; cmsghdr = CMSG_NXTHDR ( & msghdr , cmsghdr ) ) { <S2SV_StartBug> if ( cmsghdr -> cmsg_level == IPPROTO_IPV6 && <S2SV_EndBug> <S2SV_StartBug> cmsghdr -> cmsg_type == IPV6_PKTINFO && <S2SV_EndBug> cmsghdr -> cmsg_len == CMSG_LEN ( sizeof ( struct in6_pktinfo ) ) ) { struct in6_pktinfo * pktinfo ; pktinfo = ( struct in6_pktinfo * ) CMSG_DATA ( cmsghdr ) ; * ifindex = pktinfo -> ipi6_ifindex ; } <S2SV_StartBug> } <S2SV_EndBug> * addr = sin6 . sin6_addr ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t * ifindex , int * hoplimit <S2SV_ModStart> char cbuf [ 2 * <S2SV_ModStart> cmsghdr -> cmsg_level != IPPROTO_IPV6 ) continue ; switch ( <S2SV_ModEnd> cmsghdr -> cmsg_type <S2SV_ModStart> cmsghdr -> cmsg_type ) { case IPV6_PKTINFO : if ( <S2SV_ModEnd> cmsghdr -> cmsg_len <S2SV_ModStart> ipi6_ifindex ; } break ; case IPV6_HOPLIMIT : if ( cmsghdr -> cmsg_len == CMSG_LEN ( sizeof ( int ) ) ) { int * val ; val = ( int * ) CMSG_DATA ( cmsghdr ) ; * hoplimit = * val ; } break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 int touch_file ( const char * path , bool parents , usec_t stamp , uid_t uid , gid_t gid , mode_t mode ) { _cleanup_close_ int fd ; int r ; assert ( path ) ; if ( parents ) mkdir_parents ( path , 0755 ) ; fd = open ( path , O_WRONLY | O_CREAT | O_CLOEXEC | O_NOCTTY , mode > 0 ? mode : 0644 ) ; if ( fd < 0 ) return - errno ; <S2SV_StartBug> if ( mode > 0 ) { <S2SV_EndBug> r = fchmod ( fd , mode ) ; if ( r < 0 ) return - errno ; } if ( uid != UID_INVALID || gid != GID_INVALID ) { r = fchown ( fd , uid , gid ) ; if ( r < 0 ) return - errno ; } if ( stamp != USEC_INFINITY ) { struct timespec ts [ 2 ] ; timespec_store ( & ts [ 0 ] , stamp ) ; ts [ 1 ] = ts [ 0 ] ; r = futimens ( fd , ts ) ; } else r = futimens ( fd , NULL ) ; if ( r < 0 ) return - errno ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( mode != MODE_INVALID <S2SV_ModEnd> ) { r\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 static long ext4_zero_range ( struct file * file , loff_t offset , loff_t len , int mode ) { struct inode * inode = file_inode ( file ) ; handle_t * handle = NULL ; unsigned int max_blocks ; loff_t new_size = 0 ; int ret = 0 ; int flags ; int credits ; int partial_begin , partial_end ; loff_t start , end ; ext4_lblk_t lblk ; <S2SV_StartBug> struct address_space * mapping = inode -> i_mapping ; <S2SV_EndBug> unsigned int blkbits = inode -> i_blkbits ; trace_ext4_zero_range ( inode , offset , len , mode ) ; if ( ! S_ISREG ( inode -> i_mode ) ) return - EINVAL ; if ( ext4_should_journal_data ( inode ) ) { ret = ext4_force_commit ( inode -> i_sb ) ; if ( ret ) return ret ; } <S2SV_StartBug> if ( mapping -> nrpages && mapping_tagged ( mapping , PAGECACHE_TAG_DIRTY ) ) { <S2SV_EndBug> ret = filemap_write_and_wait_range ( mapping , offset , offset + len - 1 ) ; if ( ret ) return ret ; } start = round_up ( offset , 1 << blkbits ) ; end = round_down ( ( offset + len ) , 1 << blkbits ) ; if ( start < offset || end > offset + len ) return - EINVAL ; partial_begin = offset & ( ( 1 << blkbits ) - 1 ) ; partial_end = ( offset + len ) & ( ( 1 << blkbits ) - 1 ) ; lblk = start >> blkbits ; max_blocks = ( end >> blkbits ) ; if ( max_blocks < lblk ) max_blocks = 0 ; else max_blocks -= lblk ; mutex_lock ( & inode -> i_mutex ) ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) { ret = - EOPNOTSUPP ; goto out_mutex ; } if ( ! ( mode & FALLOC_FL_KEEP_SIZE ) && offset + len > i_size_read ( inode ) ) { new_size = offset + len ; ret = inode_newsize_ok ( inode , new_size ) ; if ( ret ) goto out_mutex ; } flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT ; if ( mode & FALLOC_FL_KEEP_SIZE ) flags |= EXT4_GET_BLOCKS_KEEP_SIZE ; if ( partial_begin || partial_end ) { ret = ext4_alloc_file_blocks ( file , round_down ( offset , 1 << blkbits ) >> blkbits , ( round_up ( ( offset + len ) , 1 << blkbits ) - round_down ( offset , 1 << blkbits ) ) >> blkbits , new_size , flags , mode ) ; if ( ret ) goto out_mutex ; } if ( max_blocks > 0 ) { flags |= ( EXT4_GET_BLOCKS_CONVERT_UNWRITTEN | EXT4_EX_NOCACHE ) ; <S2SV_StartBug> truncate_pagecache_range ( inode , start , end - 1 ) ; <S2SV_EndBug> inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; <S2SV_StartBug> ext4_inode_block_unlocked_dio ( inode ) ; <S2SV_EndBug> inode_dio_wait ( inode ) ; ret = ext4_alloc_file_blocks ( file , lblk , max_blocks , new_size , <S2SV_StartBug> flags , mode ) ; <S2SV_EndBug> if ( ret ) goto out_dio ; } if ( ! partial_begin && ! partial_end ) goto out_dio ; credits = ( 2 * ext4_ext_index_trans_blocks ( inode , 2 ) ) + 1 ; if ( ext4_should_journal_data ( inode ) ) credits += 2 ; handle = ext4_journal_start ( inode , EXT4_HT_MISC , credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; ext4_std_error ( inode -> i_sb , ret ) ; goto out_dio ; } inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; if ( new_size ) { ext4_update_inode_size ( inode , new_size ) ; } else { if ( ( offset + len ) > i_size_read ( inode ) ) ext4_set_inode_flag ( inode , EXT4_INODE_EOFBLOCKS ) ; } ext4_mark_inode_dirty ( handle , inode ) ; ret = ext4_zero_partial_blocks ( handle , inode , offset , len ) ; if ( file -> f_flags & O_SYNC ) ext4_handle_sync ( handle ) ; ext4_journal_stop ( handle ) ; out_dio : ext4_inode_resume_unlocked_dio ( inode ) ; out_mutex : mutex_unlock ( & inode -> i_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext4_lblk_t lblk ; <S2SV_ModEnd> unsigned int blkbits <S2SV_ModStart> ret ; } <S2SV_ModEnd> start = round_up <S2SV_ModStart> EXT4_EX_NOCACHE ) ; ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> inode ) ; <S2SV_ModEnd> ret = ext4_alloc_file_blocks <S2SV_ModStart> flags , mode ) ; up_write ( & EXT4_I ( inode ) -> i_mmap_sem\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4470\n\n```\nCWE-000 int key_reject_and_link ( struct key * key , unsigned timeout , unsigned error , struct key * keyring , struct key * authkey ) { struct assoc_array_edit * edit ; struct timespec now ; int ret , awaken , link_ret = 0 ; key_check ( key ) ; key_check ( keyring ) ; awaken = 0 ; ret = - EBUSY ; if ( keyring ) { if ( keyring -> restrict_link ) return - EPERM ; link_ret = __key_link_begin ( keyring , & key -> index_key , & edit ) ; } mutex_lock ( & key_construction_mutex ) ; if ( ! test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) { atomic_inc ( & key -> user -> nikeys ) ; key -> reject_error = - error ; smp_wmb ( ) ; set_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ; set_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ; now = current_kernel_time ( ) ; key -> expiry = now . tv_sec + timeout ; key_schedule_gc ( key -> expiry + key_gc_delay ) ; if ( test_and_clear_bit ( KEY_FLAG_USER_CONSTRUCT , & key -> flags ) ) awaken = 1 ; ret = 0 ; if ( keyring && link_ret == 0 ) __key_link ( key , & edit ) ; if ( authkey ) key_revoke ( authkey ) ; } mutex_unlock ( & key_construction_mutex ) ; <S2SV_StartBug> if ( keyring ) <S2SV_EndBug> __key_link_end ( keyring , & key -> index_key , edit ) ; if ( awaken ) wake_up_bit ( & key -> flags , KEY_FLAG_USER_CONSTRUCT ) ; return ret == 0 ? link_ret : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( keyring && link_ret == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1929\n\n```\nCWE-119 static void tg3_read_vpd ( struct tg3 * tp ) { u8 * vpd_data ; unsigned int block_end , rosize , len ; u32 vpdlen ; int j , i = 0 ; vpd_data = ( u8 * ) tg3_vpd_readblock ( tp , & vpdlen ) ; if ( ! vpd_data ) goto out_no_vpd ; i = pci_vpd_find_tag ( vpd_data , 0 , vpdlen , PCI_VPD_LRDT_RO_DATA ) ; if ( i < 0 ) goto out_not_found ; rosize = pci_vpd_lrdt_size ( & vpd_data [ i ] ) ; block_end = i + PCI_VPD_LRDT_TAG_SIZE + rosize ; i += PCI_VPD_LRDT_TAG_SIZE ; if ( block_end > vpdlen ) goto out_not_found ; j = pci_vpd_find_info_keyword ( vpd_data , i , rosize , PCI_VPD_RO_KEYWORD_MFR_ID ) ; if ( j > 0 ) { len = pci_vpd_info_field_size ( & vpd_data [ j ] ) ; j += PCI_VPD_INFO_FLD_HDR_SIZE ; if ( j + len > block_end || len != 4 || memcmp ( & vpd_data [ j ] , \"1028\" , 4 ) ) goto partno ; j = pci_vpd_find_info_keyword ( vpd_data , i , rosize , PCI_VPD_RO_KEYWORD_VENDOR0 ) ; if ( j < 0 ) goto partno ; len = pci_vpd_info_field_size ( & vpd_data [ j ] ) ; j += PCI_VPD_INFO_FLD_HDR_SIZE ; if ( j + len > block_end ) goto partno ; <S2SV_StartBug> memcpy ( tp -> fw_ver , & vpd_data [ j ] , len ) ; <S2SV_EndBug> <S2SV_StartBug> strncat ( tp -> fw_ver , \"<S2SV_blank>bc<S2SV_blank>\" , vpdlen - len - 1 ) ; <S2SV_EndBug> } partno : i = pci_vpd_find_info_keyword ( vpd_data , i , rosize , PCI_VPD_RO_KEYWORD_PARTNO ) ; if ( i < 0 ) goto out_not_found ; len = pci_vpd_info_field_size ( & vpd_data [ i ] ) ; i += PCI_VPD_INFO_FLD_HDR_SIZE ; if ( len > TG3_BPN_SIZE || ( len + i ) > vpdlen ) goto out_not_found ; memcpy ( tp -> board_part_number , & vpd_data [ i ] , len ) ; out_not_found : kfree ( vpd_data ) ; if ( tp -> board_part_number [ 0 ] ) return ; out_no_vpd : if ( tg3_asic_rev ( tp ) == ASIC_REV_5717 ) { if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_5717 || tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_5717_C ) strcpy ( tp -> board_part_number , \"BCM5717\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_5718 ) strcpy ( tp -> board_part_number , \"BCM5718\" ) ; else goto nomatch ; } else if ( tg3_asic_rev ( tp ) == ASIC_REV_57780 ) { if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57780 ) strcpy ( tp -> board_part_number , \"BCM57780\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57760 ) strcpy ( tp -> board_part_number , \"BCM57760\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57790 ) strcpy ( tp -> board_part_number , \"BCM57790\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57788 ) strcpy ( tp -> board_part_number , \"BCM57788\" ) ; else goto nomatch ; } else if ( tg3_asic_rev ( tp ) == ASIC_REV_57765 ) { if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57761 ) strcpy ( tp -> board_part_number , \"BCM57761\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57765 ) strcpy ( tp -> board_part_number , \"BCM57765\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57781 ) strcpy ( tp -> board_part_number , \"BCM57781\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57785 ) strcpy ( tp -> board_part_number , \"BCM57785\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57791 ) strcpy ( tp -> board_part_number , \"BCM57791\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57795 ) strcpy ( tp -> board_part_number , \"BCM57795\" ) ; else goto nomatch ; } else if ( tg3_asic_rev ( tp ) == ASIC_REV_57766 ) { if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57762 ) strcpy ( tp -> board_part_number , \"BCM57762\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57766 ) strcpy ( tp -> board_part_number , \"BCM57766\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57782 ) strcpy ( tp -> board_part_number , \"BCM57782\" ) ; else if ( tp -> pdev -> device == TG3PCI_DEVICE_TIGON3_57786 ) strcpy ( tp -> board_part_number , \"BCM57786\" ) ; else goto nomatch ; } else if ( tg3_asic_rev ( tp ) == ASIC_REV_5906 ) { strcpy ( tp -> board_part_number , \"BCM95906\" ) ; } else { nomatch : strcpy ( tp -> board_part_number , \"none\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto partno ; if ( len >= sizeof <S2SV_ModEnd> ( tp -> <S2SV_ModStart> tp -> fw_ver ) ) len = sizeof <S2SV_ModEnd> ( tp -> <S2SV_ModStart> tp -> fw_ver ) - 1 ; memset ( tp -> fw_ver , 0 , sizeof ( tp -> fw_ver ) ) ; snprintf ( tp -> fw_ver , sizeof ( tp -> fw_ver ) , \"%.*s<S2SV_blank>bc<S2SV_blank>\" , len , & vpd_data [ j ] <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5045\n\n```\nCWE-59 static int mountpoint_last ( struct nameidata * nd , struct path * path ) { int error = 0 ; struct dentry * dentry ; struct dentry * dir = nd -> path . dentry ; if ( nd -> flags & LOOKUP_RCU ) { if ( unlazy_walk ( nd , NULL ) ) { error = - ECHILD ; goto out ; } } nd -> flags &= ~ LOOKUP_PARENT ; if ( unlikely ( nd -> last_type != LAST_NORM ) ) { error = handle_dots ( nd , nd -> last_type ) ; if ( error ) goto out ; dentry = dget ( nd -> path . dentry ) ; goto done ; } mutex_lock ( & dir -> d_inode -> i_mutex ) ; dentry = d_lookup ( dir , & nd -> last ) ; if ( ! dentry ) { dentry = d_alloc ( dir , & nd -> last ) ; if ( ! dentry ) { error = - ENOMEM ; mutex_unlock ( & dir -> d_inode -> i_mutex ) ; goto out ; } dentry = lookup_real ( dir -> d_inode , dentry , nd -> flags ) ; error = PTR_ERR ( dentry ) ; if ( IS_ERR ( dentry ) ) { mutex_unlock ( & dir -> d_inode -> i_mutex ) ; goto out ; } } mutex_unlock ( & dir -> d_inode -> i_mutex ) ; done : if ( ! dentry -> d_inode || d_is_negative ( dentry ) ) { error = - ENOENT ; dput ( dentry ) ; goto out ; } path -> dentry = dentry ; <S2SV_StartBug> path -> mnt = mntget ( nd -> path . mnt ) ; <S2SV_EndBug> if ( should_follow_link ( dentry , nd -> flags & LOOKUP_FOLLOW ) ) return 1 ; <S2SV_StartBug> follow_mount ( path ) ; <S2SV_EndBug> error = 0 ; out : terminate_walk ( nd ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mnt = <S2SV_ModEnd> nd -> path <S2SV_ModStart> path . mnt <S2SV_ModEnd> ; if ( <S2SV_ModStart> return 1 ; mntget ( path -> mnt ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11219\n\n```\nCWE-190 static int b_unpack ( lua_State * L ) { Header h ; const char * fmt = luaL_checkstring ( L , 1 ) ; size_t ld ; const char * data = luaL_checklstring ( L , 2 , & ld ) ; <S2SV_StartBug> size_t pos = luaL_optinteger ( L , 3 , 1 ) - 1 ; <S2SV_EndBug> int n = 0 ; defaultoptions ( & h ) ; while ( * fmt ) { int opt = * fmt ++ ; size_t size = optsize ( L , opt , & fmt ) ; pos += gettoalign ( pos , & h , opt , size ) ; <S2SV_StartBug> luaL_argcheck ( L , pos + size <= ld , 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\" ) ; <S2SV_EndBug> luaL_checkstack ( L , 2 , \"too<S2SV_blank>many<S2SV_blank>results\" ) ; switch ( opt ) { case 'b' : case 'B' : case 'h' : case 'H' : case 'l' : case 'L' : case 'T' : case 'i' : case 'I' : { int issigned = islower ( opt ) ; lua_Number res = getinteger ( data + pos , h . endian , issigned , size ) ; lua_pushnumber ( L , res ) ; n ++ ; break ; } case 'x' : { break ; } case 'f' : { float f ; memcpy ( & f , data + pos , size ) ; correctbytes ( ( char * ) & f , sizeof ( f ) , h . endian ) ; lua_pushnumber ( L , f ) ; n ++ ; break ; } case 'd' : { double d ; memcpy ( & d , data + pos , size ) ; correctbytes ( ( char * ) & d , sizeof ( d ) , h . endian ) ; lua_pushnumber ( L , d ) ; n ++ ; break ; } case 'c' : { if ( size == 0 ) { if ( n == 0 || ! lua_isnumber ( L , - 1 ) ) luaL_error ( L , \"format<S2SV_blank>\\'c0\\'<S2SV_blank>needs<S2SV_blank>a<S2SV_blank>previous<S2SV_blank>size\" ) ; size = lua_tonumber ( L , - 1 ) ; lua_pop ( L , 1 ) ; n -- ; luaL_argcheck ( L , size <= ld && pos <= ld - size , 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\" ) ; } lua_pushlstring ( L , data + pos , size ) ; n ++ ; break ; } case 's' : { const char * e = ( const char * ) memchr ( data + pos , '\\\\0' , ld - pos ) ; if ( e == NULL ) luaL_error ( L , \"unfinished<S2SV_blank>string<S2SV_blank>in<S2SV_blank>data\" ) ; size = ( e - ( data + pos ) ) + 1 ; lua_pushlstring ( L , data + pos , size - 1 ) ; n ++ ; break ; } default : controloptions ( L , opt , & fmt , & h ) ; } pos += size ; } lua_pushinteger ( L , pos + 1 ) ; return n + 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 ) ; luaL_argcheck ( L , pos > 0 , 3 , \"offset<S2SV_blank>must<S2SV_blank>be<S2SV_blank>1<S2SV_blank>or<S2SV_blank>greater\" ) ; pos -- <S2SV_ModEnd> ; int n <S2SV_ModStart> ( L , <S2SV_ModEnd> size <= ld <S2SV_ModStart> size <= ld && pos <= ld - size , <S2SV_ModEnd> 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1860\n\n```\nCWE-119 static ssize_t wdm_read ( struct file * file , char __user * buffer , size_t count , loff_t * ppos ) { int rv , cntr ; int i = 0 ; struct wdm_device * desc = file -> private_data ; rv = mutex_lock_interruptible ( & desc -> rlock ) ; if ( rv < 0 ) return - ERESTARTSYS ; cntr = ACCESS_ONCE ( desc -> length ) ; if ( cntr == 0 ) { desc -> read = 0 ; retry : if ( test_bit ( WDM_DISCONNECTING , & desc -> flags ) ) { rv = - ENODEV ; goto err ; } <S2SV_StartBug> i ++ ; <S2SV_EndBug> if ( file -> f_flags & O_NONBLOCK ) { if ( ! test_bit ( WDM_READ , & desc -> flags ) ) { rv = cntr ? cntr : - EAGAIN ; goto err ; } rv = 0 ; } else { rv = wait_event_interruptible ( desc -> wait , test_bit ( WDM_READ , & desc -> flags ) ) ; } if ( test_bit ( WDM_DISCONNECTING , & desc -> flags ) ) { rv = - ENODEV ; goto err ; } if ( test_bit ( WDM_RESETTING , & desc -> flags ) ) { rv = - EIO ; goto err ; } usb_mark_last_busy ( interface_to_usbdev ( desc -> intf ) ) ; if ( rv < 0 ) { rv = - ERESTARTSYS ; goto err ; } spin_lock_irq ( & desc -> iuspin ) ; if ( desc -> rerr ) { desc -> rerr = 0 ; spin_unlock_irq ( & desc -> iuspin ) ; rv = - EIO ; goto err ; } if ( ! test_bit ( WDM_READ , & desc -> flags ) ) { spin_unlock_irq ( & desc -> iuspin ) ; goto retry ; } if ( ! desc -> reslength ) { dev_dbg ( & desc -> intf -> dev , \"%s:<S2SV_blank>zero<S2SV_blank>length<S2SV_blank>-<S2SV_blank>clearing<S2SV_blank>WDM_READ\\\\n\" , __func__ ) ; clear_bit ( WDM_READ , & desc -> flags ) ; spin_unlock_irq ( & desc -> iuspin ) ; goto retry ; } cntr = desc -> length ; spin_unlock_irq ( & desc -> iuspin ) ; } if ( cntr > count ) cntr = count ; rv = copy_to_user ( buffer , desc -> ubuf , cntr ) ; if ( rv > 0 ) { rv = - EFAULT ; goto err ; } spin_lock_irq ( & desc -> iuspin ) ; for ( i = 0 ; i < desc -> length - cntr ; i ++ ) desc -> ubuf [ i ] = desc -> ubuf [ i + cntr ] ; desc -> length -= cntr ; if ( ! desc -> length ) clear_bit ( WDM_READ , & desc -> flags ) ; spin_unlock_irq ( & desc -> iuspin ) ; rv = cntr ; err : mutex_unlock ( & desc -> rlock ) ; return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } if ( test_bit ( WDM_OVERFLOW , & desc -> flags ) ) { clear_bit ( WDM_OVERFLOW , & desc -> flags ) ; rv = - ENOBUFS ; goto err ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 uint16_t enc28j60ReadPhyReg ( NetInterface * interface , uint16_t address ) { uint16_t data ; <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MIREGADR , address & REG_ADDR_MASK ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MICMD , MICMD_MIIRD ) ; <S2SV_EndBug> <S2SV_StartBug> while ( ( enc28j60ReadReg ( interface , ENC28J60_REG_MISTAT ) & MISTAT_BUSY ) != 0 ) <S2SV_EndBug> { } <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MICMD , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> data = enc28j60ReadReg ( interface , ENC28J60_REG_MIRDL ) ; <S2SV_EndBug> <S2SV_StartBug> data |= enc28j60ReadReg ( interface , ENC28J60_REG_MIRDH ) << 8 ; <S2SV_EndBug> return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC28J60_MIREGADR <S2SV_ModEnd> , address & <S2SV_ModStart> ( interface , ENC28J60_MICMD , ENC28J60_MICMD_MIIRD <S2SV_ModEnd> ) ; while <S2SV_ModStart> ( interface , ENC28J60_MISTAT ) & ENC28J60_MISTAT_BUSY <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC28J60_MICMD <S2SV_ModEnd> , 0 ) <S2SV_ModStart> ( interface , ENC28J60_MIRDL <S2SV_ModEnd> ) ; data <S2SV_ModStart> ( interface , ENC28J60_MIRDH <S2SV_ModEnd> ) << 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_revalidate_domain ( struct work_struct * work ) { int res = 0 ; struct sas_discovery_event * ev = to_sas_discovery_event ( work ) ; struct asd_sas_port * port = ev -> port ; struct sas_ha_struct * ha = port -> ha ; struct domain_device * ddev = port -> port_dev ; mutex_lock ( & ha -> disco_mutex ) ; if ( test_bit ( SAS_HA_ATA_EH_ACTIVE , & ha -> state ) ) { SAS_DPRINTK ( \"REVALIDATION<S2SV_blank>DEFERRED<S2SV_blank>on<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>pid:%d\\\\n\" , port -> id , task_pid_nr ( current ) ) ; goto out ; } clear_bit ( DISCE_REVALIDATE_DOMAIN , & port -> disc . pending ) ; SAS_DPRINTK ( \"REVALIDATING<S2SV_blank>DOMAIN<S2SV_blank>on<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>pid:%d\\\\n\" , port -> id , task_pid_nr ( current ) ) ; if ( ddev && ( ddev -> dev_type == SAS_FANOUT_EXPANDER_DEVICE || ddev -> dev_type == SAS_EDGE_EXPANDER_DEVICE ) ) res = sas_ex_revalidate_domain ( ddev ) ; SAS_DPRINTK ( \"done<S2SV_blank>REVALIDATING<S2SV_blank>DOMAIN<S2SV_blank>on<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>pid:%d,<S2SV_blank>res<S2SV_blank>0x%x\\\\n\" , port -> id , task_pid_nr ( current ) , res ) ; out : mutex_unlock ( & ha -> disco_mutex ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> disco_mutex ) ; sas_destruct_devices ( port ) ; sas_destruct_ports ( port ) ; sas_probe_devices ( port ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4653\n\n```\nCWE-000 static int snd_ctl_elem_write ( struct snd_card * card , struct snd_ctl_file * file , struct snd_ctl_elem_value * control ) { struct snd_kcontrol * kctl ; struct snd_kcontrol_volatile * vd ; unsigned int index_offset ; int result ; down_read ( & card -> controls_rwsem ) ; kctl = snd_ctl_find_id ( card , & control -> id ) ; if ( kctl == NULL ) { result = - ENOENT ; } else { index_offset = snd_ctl_get_ioff ( kctl , & control -> id ) ; vd = & kctl -> vd [ index_offset ] ; if ( ! ( vd -> access & SNDRV_CTL_ELEM_ACCESS_WRITE ) || kctl -> put == NULL || ( file && vd -> owner && vd -> owner != file ) ) { result = - EPERM ; } else { snd_ctl_build_ioff ( & control -> id , kctl , index_offset ) ; result = kctl -> put ( kctl , control ) ; } if ( result > 0 ) { <S2SV_StartBug> up_read ( & card -> controls_rwsem ) ; <S2SV_EndBug> snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_VALUE , <S2SV_StartBug> & control -> id ) ; <S2SV_EndBug> return 0 ; } } up_read ( & card -> controls_rwsem ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { struct snd_ctl_elem_id id = control -> id ; <S2SV_ModStart> , SNDRV_CTL_EVENT_MASK_VALUE , & <S2SV_ModEnd> id ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_readtest ( unsigned long arg ) <S2SV_EndBug> { struct mpt_ioctl_test __user * uarg = ( void __user * ) arg ; struct mpt_ioctl_test karg ; <S2SV_StartBug> MPT_ADAPTER * ioc ; <S2SV_EndBug> int iocnum ; if ( copy_from_user ( & karg , uarg , sizeof ( struct mpt_ioctl_test ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_readtest<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>mpt_ioctl_test<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uarg ) ; return - EFAULT ; } <S2SV_StartBug> if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || <S2SV_EndBug> ( ioc == NULL ) ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_readtest()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; } dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"mptctl_readtest<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; # ifdef MFCNT karg . chip_type = ioc -> mfcnt ; # else karg . chip_type = ioc -> pcidev -> device ; # endif strncpy ( karg . name , ioc -> name , MPT_MAX_NAME ) ; karg . name [ MPT_MAX_NAME - 1 ] = '\\\\0' ; strncpy ( karg . product , ioc -> prod_name , MPT_PRODUCT_LENGTH ) ; karg . product [ MPT_PRODUCT_LENGTH - 1 ] = '\\\\0' ; if ( copy_to_user ( ( char __user * ) arg , & karg , sizeof ( struct mpt_ioctl_test ) ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_readtest<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>out<S2SV_blank>mpt_ioctl_test<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , uarg ) ; return - EFAULT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_readtest ( MPT_ADAPTER * ioc , <S2SV_ModStart> mpt_ioctl_test karg ; <S2SV_ModEnd> if ( copy_from_user <S2SV_ModStart> EFAULT ; } <S2SV_ModEnd> dctlprintk ( ioc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void choose_partitioning ( VP9_COMP * cpi , <S2SV_EndBug> const TileInfo * const tile , <S2SV_StartBug> int mi_row , int mi_col ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * x = & cpi -> mb ; <S2SV_EndBug> <S2SV_StartBug> MACROBLOCKD * xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> <S2SV_StartBug> int i , j , k ; <S2SV_EndBug> <S2SV_StartBug> v64x64 vt ; <S2SV_EndBug> uint8_t * s ; const uint8_t * d ; int sp ; int dp ; int pixels_wide = 64 , pixels_high = 64 ; <S2SV_StartBug> int_mv nearest_mv , near_mv ; <S2SV_EndBug> const YV12_BUFFER_CONFIG * yv12 = get_ref_frame_buffer ( cpi , LAST_FRAME ) ; <S2SV_StartBug> const struct scale_factors * const sf = & cm -> frame_refs [ LAST_FRAME - 1 ] . sf ; <S2SV_EndBug> vp9_zero ( vt ) ; <S2SV_StartBug> set_offsets ( cpi , tile , mi_row , mi_col , BLOCK_64X64 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( xd -> mb_to_right_edge < 0 ) <S2SV_EndBug> pixels_wide += ( xd -> mb_to_right_edge >> 3 ) ; if ( xd -> mb_to_bottom_edge < 0 ) pixels_high += ( xd -> mb_to_bottom_edge >> 3 ) ; s = x -> plane [ 0 ] . src . buf ; sp = x -> plane [ 0 ] . src . stride ; if ( cm -> frame_type != KEY_FRAME ) { <S2SV_StartBug> vp9_setup_pre_planes ( xd , 0 , yv12 , mi_row , mi_col , sf ) ; <S2SV_EndBug> xd -> mi [ 0 ] -> mbmi . ref_frame [ 0 ] = LAST_FRAME ; xd -> mi [ 0 ] -> mbmi . sb_type = BLOCK_64X64 ; vp9_find_best_ref_mvs ( xd , cm -> allow_high_precision_mv , xd -> mi [ 0 ] -> mbmi . ref_mvs [ LAST_FRAME ] , & nearest_mv , & near_mv ) ; xd -> mi [ 0 ] -> mbmi . mv [ 0 ] = nearest_mv ; vp9_build_inter_predictors_sby ( xd , mi_row , mi_col , BLOCK_64X64 ) ; d = xd -> plane [ 0 ] . dst . buf ; <S2SV_StartBug> dp = xd -> plane [ 0 ] . dst . stride ; <S2SV_EndBug> } else { d = VP9_VAR_OFFS ; dp = 0 ; } for ( i = 0 ; i < 4 ; i ++ ) { const int x32_idx = ( ( i & 1 ) << 5 ) ; const int y32_idx = ( ( i >> 1 ) << 5 ) ; <S2SV_StartBug> for ( j = 0 ; j < 4 ; j ++ ) { <S2SV_EndBug> const int x16_idx = x32_idx + ( ( j & 1 ) << 4 ) ; <S2SV_StartBug> const int y16_idx = y32_idx + ( ( j >> 1 ) << 4 ) ; <S2SV_EndBug> v16x16 * vst = & vt . split [ i ] . split [ j ] ; <S2SV_StartBug> for ( k = 0 ; k < 4 ; k ++ ) { <S2SV_EndBug> <S2SV_StartBug> int x_idx = x16_idx + ( ( k & 1 ) << 3 ) ; <S2SV_EndBug> <S2SV_StartBug> int y_idx = y16_idx + ( ( k >> 1 ) << 3 ) ; <S2SV_EndBug> <S2SV_StartBug> unsigned int sse = 0 ; <S2SV_EndBug> int sum = 0 ; if ( x_idx < pixels_wide && y_idx < pixels_high ) vp9_get_sse_sum_8x8 ( s + y_idx * sp + x_idx , sp , d + y_idx * dp + x_idx , dp , & sse , & sum ) ; fill_variance ( sse , sum , 64 , & vst -> split [ k ] . part_variances . none ) ; } } } for ( i = 0 ; i < 4 ; i ++ ) { <S2SV_StartBug> for ( j = 0 ; j < 4 ; j ++ ) { <S2SV_EndBug> <S2SV_StartBug> fill_variance_tree ( & vt . split [ i ] . split [ j ] , BLOCK_16X16 ) ; <S2SV_EndBug> } <S2SV_StartBug> fill_variance_tree ( & vt . split [ i ] , BLOCK_32X32 ) ; <S2SV_EndBug> } <S2SV_StartBug> fill_variance_tree ( & vt , BLOCK_64X64 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! set_vt_partitioning ( cpi , & vt , tile , BLOCK_64X64 , <S2SV_EndBug> <S2SV_StartBug> mi_row , mi_col , 8 ) ) { <S2SV_EndBug> for ( i = 0 ; i < 4 ; ++ i ) { const int x32_idx = ( ( i & 1 ) << 2 ) ; const int y32_idx = ( ( i >> 1 ) << 2 ) ; <S2SV_StartBug> if ( ! set_vt_partitioning ( cpi , & vt . split [ i ] , tile , BLOCK_32X32 , <S2SV_EndBug> <S2SV_StartBug> ( mi_row + y32_idx ) , ( mi_col + x32_idx ) , 4 ) ) { <S2SV_EndBug> for ( j = 0 ; j < 4 ; ++ j ) { const int x16_idx = ( ( j & 1 ) << 1 ) ; const int y16_idx = ( ( j >> 1 ) << 1 ) ; <S2SV_StartBug> # define DISABLE_8X8_VAR_BASED_PARTITION <S2SV_EndBug> # ifdef DISABLE_8X8_VAR_BASED_PARTITION <S2SV_StartBug> if ( mi_row + y32_idx + y16_idx + 1 < cm -> mi_rows && <S2SV_EndBug> <S2SV_StartBug> mi_row + x32_idx + x16_idx + 1 < cm -> mi_cols ) { <S2SV_EndBug> set_block_size ( cpi , tile , ( mi_row + y32_idx + y16_idx ) , ( mi_col + x32_idx + x16_idx ) , BLOCK_16X16 ) ; } else { for ( k = 0 ; k < 4 ; ++ k ) { const int x8_idx = ( k & 1 ) ; const int y8_idx = ( k >> 1 ) ; <S2SV_StartBug> set_block_size ( cpi , tile , <S2SV_EndBug> ( mi_row + y32_idx + y16_idx + y8_idx ) , ( mi_col + x32_idx + x16_idx + x8_idx ) , BLOCK_8X8 ) ; } } # else <S2SV_StartBug> if ( ! set_vt_partitioning ( cpi , & vt . split [ i ] . split [ j ] , tile , <S2SV_EndBug> BLOCK_16X16 , <S2SV_StartBug> ( mi_row + y32_idx + y16_idx ) , <S2SV_EndBug> <S2SV_StartBug> ( mi_col + x32_idx + x16_idx ) , 2 ) ) { <S2SV_EndBug> for ( k = 0 ; k < 4 ; ++ k ) { const int x8_idx = ( k & 1 ) ; const int y8_idx = ( k >> 1 ) ; <S2SV_StartBug> set_block_size ( cpi , tile , <S2SV_EndBug> ( mi_row + y32_idx + y16_idx + y8_idx ) , ( mi_col + x32_idx + x16_idx + x8_idx ) , BLOCK_8X8 ) ; } } <S2SV_StartBug> # endif <S2SV_EndBug> } } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> choose_partitioning ( VP9_COMP <S2SV_ModStart> const tile , <S2SV_ModEnd> MACROBLOCK * x <S2SV_ModStart> MACROBLOCK * x , int mi_row , int mi_col ) { VP9_COMMON * const cm = & cpi -> common <S2SV_ModEnd> ; MACROBLOCKD * <S2SV_ModStart> xd = & x -> <S2SV_ModEnd> e_mbd ; int <S2SV_ModStart> j , k , m <S2SV_ModStart> ; v64x64 vt ; v16x16 vt2 [ 16 ] ; int force_split [ 21 ] <S2SV_ModStart> = 64 ; int64_t thresholds [ 4 ] = { cpi -> vbp_thresholds [ 0 ] , cpi -> vbp_thresholds [ 1 ] , cpi -> vbp_thresholds [ 2 ] , cpi -> vbp_thresholds [ 3 ] } ; const int is_key_frame = ( cm -> frame_type == KEY_FRAME ) ; const int use_4x4_partition = is_key_frame ; const int low_res = ( cm -> width <= 352 && cm -> height <= 288 ) ; int variance4x4downsample [ 16 ] ; int segment_id = CR_SEGMENT_ID_BASE ; if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ && cm -> seg . enabled ) { const uint8_t * const map = cm -> seg . update_map ? cpi -> segmentation_map : cm -> last_frame_seg_map ; segment_id = get_segment_id ( cm , map , BLOCK_64X64 , mi_row , mi_col ) ; if ( cyclic_refresh_segment_id_boosted ( segment_id ) ) { int q = vp9_get_qindex ( & cm -> seg , segment_id , cm -> base_qindex ) ; set_vbp_thresholds ( cpi , thresholds , q ) ; } } set_offsets ( cpi , tile , x , mi_row , mi_col , BLOCK_64X64 ) ; if ( xd -> mb_to_right_edge < 0 ) pixels_wide += ( xd -> mb_to_right_edge >> 3 ) ; if ( xd -> mb_to_bottom_edge < 0 ) pixels_high += ( xd -> mb_to_bottom_edge >> 3 ) ; s = x -> plane [ 0 ] . src . buf ; sp = x -> plane [ 0 ] . src . stride ; if ( ! is_key_frame && ! ( is_one_pass_cbr_svc ( cpi ) && cpi -> svc . layer_context [ cpi -> svc . temporal_layer_id ] . is_key_frame ) ) { MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; unsigned int uv_sad <S2SV_ModEnd> ; const YV12_BUFFER_CONFIG <S2SV_ModStart> ) ; const YV12_BUFFER_CONFIG * yv12_g = NULL ; unsigned int y_sad , y_sad_g ; const BLOCK_SIZE bsize = BLOCK_32X32 + ( mi_col + 4 < cm -> mi_cols ) * 2 + ( mi_row + 4 < cm -> mi_rows ) ; assert ( yv12 != NULL ) ; if ( ! ( is_one_pass_cbr_svc ( cpi ) && cpi -> svc . spatial_layer_id ) ) { yv12_g = get_ref_frame_buffer ( cpi , GOLDEN_FRAME ) ; } if ( yv12_g && yv12_g != yv12 && ( cpi -> ref_frame_flags & VP9_GOLD_FLAG ) ) { vp9_setup_pre_planes ( xd , 0 , yv12_g , mi_row , mi_col , & cm -> frame_refs [ GOLDEN_FRAME - 1 ] . sf ) ; y_sad_g = cpi -> fn_ptr [ bsize ] . sdf ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , xd -> plane [ 0 ] . pre [ 0 ] . buf , xd -> plane [ 0 ] . pre [ 0 ] . stride ) ; } else { y_sad_g = UINT_MAX ; } vp9_setup_pre_planes ( xd , 0 , yv12 , mi_row , mi_col , <S2SV_ModEnd> & cm -> <S2SV_ModStart> ] . sf ) ; mbmi -> ref_frame [ 0 ] = LAST_FRAME ; mbmi -> ref_frame [ 1 ] = NONE ; mbmi -> sb_type = BLOCK_64X64 ; mbmi -> mv [ 0 ] . as_int = 0 ; mbmi -> interp_filter = BILINEAR ; y_sad = vp9_int_pro_motion_estimation ( cpi , x , bsize <S2SV_ModEnd> , mi_row , <S2SV_ModStart> mi_row , mi_col ) ; if ( y_sad_g < y_sad ) { vp9_setup_pre_planes ( xd , 0 , yv12_g , mi_row , mi_col , & cm -> frame_refs [ GOLDEN_FRAME - 1 ] . sf ) ; mbmi -> ref_frame [ 0 ] = GOLDEN_FRAME ; mbmi -> mv [ 0 ] . as_int = 0 ; y_sad = y_sad_g ; } else { x -> pred_mv [ LAST_FRAME ] = mbmi -> mv [ 0 ] . as_mv ; } vp9_build_inter_predictors_sb ( xd , mi_row , mi_col <S2SV_ModStart> BLOCK_64X64 ) ; for ( i = 1 ; i <= 2 ; ++ i ) { struct macroblock_plane * p = & x -> plane [ i ] ; struct macroblockd_plane * pd = & xd -> plane [ i ] ; const BLOCK_SIZE bs = get_plane_block_size ( bsize , pd ) ; if ( bs == BLOCK_INVALID ) uv_sad = UINT_MAX ; else uv_sad = cpi -> fn_ptr [ bs ] . sdf ( p -> src . buf , p -> src . stride , pd -> dst . buf , pd -> dst . stride ) ; x -> color_sensitivity [ i - 1 ] = uv_sad > ( y_sad >> 2 ) ; } d = xd -> plane [ 0 ] . dst . buf ; dp = xd -> plane [ 0 ] . dst . stride ; if ( segment_id == CR_SEGMENT_ID_BASE && y_sad < cpi -> vbp_threshold_sad ) { const int block_width = num_8x8_blocks_wide_lookup [ BLOCK_64X64 ] ; const int block_height = num_8x8_blocks_high_lookup [ BLOCK_64X64 ] ; if ( mi_col + block_width / 2 < cm -> mi_cols && mi_row + block_height / 2 < cm -> mi_rows ) { set_block_size ( cpi , x , xd <S2SV_ModEnd> , mi_row , <S2SV_ModStart> , mi_col , BLOCK_64X64 ) ; return 0 ; } } } else { d = VP9_VAR_OFFS <S2SV_ModEnd> ; dp = <S2SV_ModStart> ; dp = 0 ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { switch ( xd -> bd ) { case 10 : d = CONVERT_TO_BYTEPTR ( VP9_HIGH_VAR_OFFS_10 ) ; break ; case 12 : d = CONVERT_TO_BYTEPTR ( VP9_HIGH_VAR_OFFS_12 ) ; break ; case 8 : default : d = CONVERT_TO_BYTEPTR ( VP9_HIGH_VAR_OFFS_8 ) ; break ; } } # endif } force_split [ 0 ] = 0 ; <S2SV_ModEnd> for ( i <S2SV_ModStart> 5 ) ; const int i2 = i << 2 ; force_split [ i + 1 ] = 0 ; <S2SV_ModStart> << 4 ) ; const int split_index = 5 + i2 + j <S2SV_ModStart> j ] ; force_split [ split_index ] = 0 ; variance4x4downsample [ i2 + j ] = 0 ; if ( ! is_key_frame ) { fill_variance_8x8avg ( s , sp , d , dp , x16_idx , y16_idx , vst , # if CONFIG_VP9_HIGHBITDEPTH xd -> cur_buf -> flags , # endif pixels_wide , pixels_high , is_key_frame ) ; fill_variance_tree ( & vt . split [ i ] . split [ j ] , BLOCK_16X16 ) ; get_variance ( & vt . split [ i ] . split [ j ] . part_variances . none ) ; if ( vt . split [ i ] . split [ j ] . part_variances . none . variance > thresholds [ 2 ] ) { force_split [ split_index ] = 1 ; force_split [ i + 1 ] = 1 ; force_split [ 0 ] = 1 ; } else if ( vt . split [ i ] . split [ j ] . part_variances . none . variance > thresholds [ 1 ] && ! cyclic_refresh_segment_id_boosted ( segment_id ) ) { int minmax = compute_minmax_8x8 ( s , sp , d , dp , x16_idx , y16_idx , # if CONFIG_VP9_HIGHBITDEPTH xd -> cur_buf -> flags , # endif pixels_wide , pixels_high ) ; if ( minmax > cpi -> vbp_threshold_minmax ) { force_split [ split_index ] = 1 ; force_split [ i + 1 ] = 1 ; force_split [ 0 ] = 1 ; } } } if ( is_key_frame || ( low_res && ! cpi -> use_svc && vt . split [ i ] . split [ j ] . part_variances . none . variance > ( thresholds [ 1 ] << 1 ) ) ) { force_split [ split_index ] = 0 ; variance4x4downsample [ i2 + j ] = 1 ; <S2SV_ModStart> ) { int x8_idx <S2SV_ModEnd> = x16_idx + <S2SV_ModStart> ) ; int y8_idx <S2SV_ModEnd> = y16_idx + <S2SV_ModStart> 3 ) ; v8x8 * vst2 = is_key_frame ? & vst -> split [ k ] : & vt2 [ i2 + j ] . split [ k ] ; fill_variance_4x4avg ( s , sp , d , dp , x8_idx , y8_idx , vst2 , # if CONFIG_VP9_HIGHBITDEPTH xd -> cur_buf -> flags , # endif pixels_wide , pixels_high , is_key_frame ) ; } <S2SV_ModEnd> } } } <S2SV_ModStart> ++ ) { const int i2 = i << 2 ; <S2SV_ModStart> ++ ) { if ( variance4x4downsample [ i2 + j ] == 1 ) { v16x16 * vtemp = ( ! is_key_frame ) ? & vt2 [ i2 + j ] : & vt . split [ i ] . split [ j ] ; for ( m = 0 ; m < 4 ; m ++ ) <S2SV_ModStart> fill_variance_tree ( & vtemp -> split [ m ] , BLOCK_8X8 ) ; fill_variance_tree ( vtemp , BLOCK_16X16 ) ; } } fill_variance_tree ( & <S2SV_ModStart> [ i ] , BLOCK_32X32 ) ; if ( ! force_split [ i + 1 ] ) { get_variance ( & vt <S2SV_ModStart> . split [ i ] . part_variances . none ) ; if ( vt . split [ i ] . part_variances . none . variance > thresholds [ 1 ] ) { force_split [ i + 1 ] = 1 ; force_split [ 0 ] = 1 ; } } } if ( ! force_split [ 0 ] ) { <S2SV_ModEnd> fill_variance_tree ( & <S2SV_ModStart> ( & vt , BLOCK_64X64 ) ; get_variance <S2SV_ModEnd> ( & vt <S2SV_ModStart> ( & vt . part_variances . none ) ; } if ( mi_col + 8 > cm -> mi_cols || mi_row + 8 > cm -> mi_rows || <S2SV_ModEnd> ! set_vt_partitioning ( <S2SV_ModStart> ( cpi , x , xd , <S2SV_ModStart> & vt , <S2SV_ModEnd> BLOCK_64X64 , mi_row <S2SV_ModStart> , mi_col , thresholds [ 0 ] , BLOCK_16X16 , force_split [ 0 ] <S2SV_ModEnd> ) ) { <S2SV_ModStart> 2 ) ; const int i2 = i << 2 ; <S2SV_ModStart> ( cpi , x , xd , <S2SV_ModStart> i ] , <S2SV_ModEnd> BLOCK_32X32 , ( <S2SV_ModStart> x32_idx ) , thresholds [ 1 ] , BLOCK_16X16 , force_split [ i + 1 ] <S2SV_ModEnd> ) ) { <S2SV_ModStart> 1 ) ; v16x16 * vtemp = ( ! is_key_frame && variance4x4downsample [ i2 + j ] == 1 ) ? & vt2 [ i2 + j ] : & vt . split [ i ] . split [ j ] ; if ( ! set_vt_partitioning ( cpi , x , xd , vtemp , BLOCK_16X16 , <S2SV_ModEnd> mi_row + y32_idx <S2SV_ModStart> y32_idx + y16_idx , mi_col <S2SV_ModEnd> + x32_idx + <S2SV_ModStart> x32_idx + x16_idx , thresholds [ 2 ] , cpi -> vbp_bsize_min , force_split [ 5 + i2 + j ] ) ) <S2SV_ModEnd> { for ( <S2SV_ModStart> 1 ) ; if ( use_4x4_partition ) { <S2SV_ModEnd> if ( ! <S2SV_ModStart> ( cpi , x , xd , & vtemp -> split [ k ] , BLOCK_8X8 , <S2SV_ModEnd> mi_row + y32_idx <S2SV_ModStart> y32_idx + y16_idx + y8_idx , <S2SV_ModEnd> mi_col + x32_idx <S2SV_ModStart> x32_idx + x16_idx + x8_idx , thresholds [ 3 ] , BLOCK_8X8 , 0 ) ) { set_block_size ( cpi , x , xd , ( mi_row + y32_idx + y16_idx + y8_idx ) , ( mi_col + x32_idx + x16_idx + x8_idx ) , BLOCK_4X4 ) ; } } else { <S2SV_ModEnd> set_block_size ( cpi <S2SV_ModStart> ( cpi , x , xd <S2SV_ModEnd> , ( mi_row <S2SV_ModStart> ; } } } } } } } return 0 ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5472\n\n```\nCWE-20 static int parse_rock_ridge_inode_internal ( struct iso_directory_record * de , <S2SV_StartBug> struct inode * inode , int regard_xa ) <S2SV_EndBug> { int symlink_len = 0 ; <S2SV_StartBug> int cnt , sig ; <S2SV_EndBug> struct inode * reloc ; struct rock_ridge * rr ; int rootflag ; struct rock_state rs ; int ret = 0 ; if ( ! ISOFS_SB ( inode -> i_sb ) -> s_rock ) return 0 ; init_rock_state ( & rs , inode ) ; setup_rock_ridge ( de , inode , & rs ) ; <S2SV_StartBug> if ( regard_xa ) { <S2SV_EndBug> rs . chr += 14 ; rs . len -= 14 ; if ( rs . len < 0 ) rs . len = 0 ; } repeat : while ( rs . len > 2 ) { rr = ( struct rock_ridge * ) rs . chr ; if ( rr -> len < 3 ) goto out ; sig = isonum_721 ( rs . chr ) ; if ( rock_check_overflow ( & rs , sig ) ) goto eio ; rs . chr += rr -> len ; rs . len -= rr -> len ; if ( rs . len < 0 ) goto out ; switch ( sig ) { # ifndef CONFIG_ZISOFS case SIG ( 'R' , 'R' ) : if ( ( rr -> u . RR . flags [ 0 ] & ( RR_PX | RR_TF | RR_SL | RR_CL ) ) == 0 ) goto out ; break ; # endif case SIG ( 'S' , 'P' ) : if ( check_sp ( rr , inode ) ) goto out ; break ; case SIG ( 'C' , 'E' ) : rs . cont_extent = isonum_733 ( rr -> u . CE . extent ) ; rs . cont_offset = isonum_733 ( rr -> u . CE . offset ) ; rs . cont_size = isonum_733 ( rr -> u . CE . size ) ; break ; case SIG ( 'E' , 'R' ) : ISOFS_SB ( inode -> i_sb ) -> s_rock = 1 ; printk ( KERN_DEBUG \"ISO<S2SV_blank>9660<S2SV_blank>Extensions:<S2SV_blank>\" ) ; { int p ; for ( p = 0 ; p < rr -> u . ER . len_id ; p ++ ) printk ( \"%c\" , rr -> u . ER . data [ p ] ) ; } printk ( \"\\\\n\" ) ; break ; case SIG ( 'P' , 'X' ) : inode -> i_mode = isonum_733 ( rr -> u . PX . mode ) ; set_nlink ( inode , isonum_733 ( rr -> u . PX . n_links ) ) ; i_uid_write ( inode , isonum_733 ( rr -> u . PX . uid ) ) ; i_gid_write ( inode , isonum_733 ( rr -> u . PX . gid ) ) ; break ; case SIG ( 'P' , 'N' ) : { int high , low ; high = isonum_733 ( rr -> u . PN . dev_high ) ; low = isonum_733 ( rr -> u . PN . dev_low ) ; if ( ( low & ~ 0xff ) && high == 0 ) { inode -> i_rdev = MKDEV ( low >> 8 , low & 0xff ) ; } else { inode -> i_rdev = MKDEV ( high , low ) ; } } break ; case SIG ( 'T' , 'F' ) : cnt = 0 ; if ( rr -> u . TF . flags & TF_CREATE ) { inode -> i_ctime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_ctime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_MODIFY ) { inode -> i_mtime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_mtime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_ACCESS ) { inode -> i_atime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_atime . tv_nsec = 0 ; } if ( rr -> u . TF . flags & TF_ATTRIBUTES ) { inode -> i_ctime . tv_sec = iso_date ( rr -> u . TF . times [ cnt ++ ] . time , 0 ) ; inode -> i_ctime . tv_nsec = 0 ; } break ; case SIG ( 'S' , 'L' ) : { int slen ; struct SL_component * slp ; struct SL_component * oldslp ; slen = rr -> len - 5 ; slp = & rr -> u . SL . link ; inode -> i_size = symlink_len ; while ( slen > 1 ) { rootflag = 0 ; switch ( slp -> flags & ~ 1 ) { case 0 : inode -> i_size += slp -> len ; break ; case 2 : inode -> i_size += 1 ; break ; case 4 : inode -> i_size += 2 ; break ; case 8 : rootflag = 1 ; inode -> i_size += 1 ; break ; default : printk ( \"Symlink<S2SV_blank>component<S2SV_blank>flag<S2SV_blank>\" \"not<S2SV_blank>implemented\\\\n\" ) ; } slen -= slp -> len + 2 ; oldslp = slp ; slp = ( struct SL_component * ) ( ( ( char * ) slp ) + slp -> len + 2 ) ; if ( slen < 2 ) { if ( ( ( rr -> u . SL . flags & 1 ) != 0 ) && ( ( oldslp -> flags & 1 ) == 0 ) ) inode -> i_size += 1 ; break ; } if ( ! rootflag && ( oldslp -> flags & 1 ) == 0 ) inode -> i_size += 1 ; } } symlink_len = inode -> i_size ; break ; case SIG ( 'R' , 'E' ) : printk ( KERN_WARNING \"Attempt<S2SV_blank>to<S2SV_blank>read<S2SV_blank>inode<S2SV_blank>for<S2SV_blank>\" \"relocated<S2SV_blank>directory\\\\n\" ) ; goto out ; case SIG ( 'C' , 'L' ) : <S2SV_StartBug> ISOFS_I ( inode ) -> i_first_extent = <S2SV_EndBug> isonum_733 ( rr -> u . CL . location ) ; reloc = <S2SV_StartBug> isofs_iget ( inode -> i_sb , <S2SV_EndBug> <S2SV_StartBug> ISOFS_I ( inode ) -> i_first_extent , <S2SV_EndBug> 0 ) ; if ( IS_ERR ( reloc ) ) { ret = PTR_ERR ( reloc ) ; goto out ; } inode -> i_mode = reloc -> i_mode ; set_nlink ( inode , reloc -> i_nlink ) ; inode -> i_uid = reloc -> i_uid ; inode -> i_gid = reloc -> i_gid ; inode -> i_rdev = reloc -> i_rdev ; inode -> i_size = reloc -> i_size ; inode -> i_blocks = reloc -> i_blocks ; inode -> i_atime = reloc -> i_atime ; inode -> i_ctime = reloc -> i_ctime ; inode -> i_mtime = reloc -> i_mtime ; iput ( reloc ) ; break ; # ifdef CONFIG_ZISOFS case SIG ( 'Z' , 'F' ) : { int algo ; if ( ISOFS_SB ( inode -> i_sb ) -> s_nocompress ) break ; algo = isonum_721 ( rr -> u . ZF . algorithm ) ; if ( algo == SIG ( 'p' , 'z' ) ) { int block_shift = isonum_711 ( & rr -> u . ZF . parms [ 1 ] ) ; if ( block_shift > 17 ) { printk ( KERN_WARNING \"isofs:<S2SV_blank>\" \"Can\\'t<S2SV_blank>handle<S2SV_blank>ZF<S2SV_blank>block<S2SV_blank>\" \"size<S2SV_blank>of<S2SV_blank>2^%d\\\\n\" , block_shift ) ; } else { ISOFS_I ( inode ) -> i_file_format = isofs_file_compressed ; ISOFS_I ( inode ) -> i_format_parm [ 0 ] = isonum_711 ( & rr -> u . ZF . parms [ 0 ] ) ; ISOFS_I ( inode ) -> i_format_parm [ 1 ] = isonum_711 ( & rr -> u . ZF . parms [ 1 ] ) ; inode -> i_size = isonum_733 ( rr -> u . ZF . real_size ) ; } } else { printk ( KERN_WARNING \"isofs:<S2SV_blank>Unknown<S2SV_blank>ZF<S2SV_blank>compression<S2SV_blank>\" \"algorithm:<S2SV_blank>%c%c\\\\n\" , rr -> u . ZF . algorithm [ 0 ] , rr -> u . ZF . algorithm [ 1 ] ) ; } break ; } # endif default : break ; } } ret = rock_continue ( & rs ) ; if ( ret == 0 ) goto repeat ; if ( ret == 1 ) ret = 0 ; out : kfree ( rs . buffer ) ; return ret ; eio : ret = - EIO ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode , int flags <S2SV_ModEnd> ) { int <S2SV_ModStart> cnt , sig ; unsigned int reloc_block <S2SV_ModStart> ; if ( flags & RR_REGARD_XA <S2SV_ModEnd> ) { rs <S2SV_ModStart> 'L' ) : if ( flags & RR_RELOC_DE ) { printk ( KERN_ERR \"ISOFS:<S2SV_blank>Recursive<S2SV_blank>directory<S2SV_blank>relocation<S2SV_blank>\" \"is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; goto eio ; } reloc_block = isonum_733 ( rr -> u . CL . location ) ; if ( reloc_block == <S2SV_ModStart> inode ) -> i_iget5_block && ISOFS_I ( inode ) -> i_iget5_offset == 0 ) { printk ( KERN_ERR \"ISOFS:<S2SV_blank>Directory<S2SV_blank>relocation<S2SV_blank>points<S2SV_blank>to<S2SV_blank>\" \"itself\\\\n\" ) ; goto eio ; } ISOFS_I ( inode ) -> i_first_extent = reloc_block <S2SV_ModEnd> ; reloc = <S2SV_ModStart> ; reloc = isofs_iget_reloc <S2SV_ModEnd> ( inode -> <S2SV_ModStart> -> i_sb , reloc_block , <S2SV_ModEnd> 0 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static enum hrtimer_restart perf_swevent_hrtimer ( struct hrtimer * hrtimer ) { enum hrtimer_restart ret = HRTIMER_RESTART ; struct perf_sample_data data ; struct pt_regs * regs ; struct perf_event * event ; u64 period ; event = container_of ( hrtimer , struct perf_event , hw . hrtimer ) ; if ( event -> state != PERF_EVENT_STATE_ACTIVE ) return HRTIMER_NORESTART ; event -> pmu -> read ( event ) ; perf_sample_data_init ( & data , 0 ) ; data . period = event -> hw . last_period ; regs = get_irq_regs ( ) ; if ( regs && ! perf_exclude_event ( event , regs ) ) { if ( ! ( event -> attr . exclude_idle && current -> pid == 0 ) ) <S2SV_StartBug> if ( perf_event_overflow ( event , 0 , & data , regs ) ) <S2SV_EndBug> ret = HRTIMER_NORESTART ; } period = max_t ( u64 , 10000 , event -> hw . sample_period ) ; hrtimer_forward_now ( hrtimer , ns_to_ktime ( period ) ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( event , <S2SV_ModEnd> & data ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4299\n\n```\nCWE-264 static int persistent_prepare_exception ( struct dm_exception_store * store , struct dm_exception * e ) { <S2SV_StartBug> struct pstore * ps = get_info ( store ) ; <S2SV_EndBug> uint32_t stride ; chunk_t next_free ; sector_t size = get_dev_size ( dm_snap_cow ( store -> snap ) -> bdev ) ; if ( size < ( ( ps -> next_free + 1 ) * store -> chunk_size ) ) return - ENOSPC ; e -> new_chunk = ps -> next_free ; <S2SV_StartBug> stride = ( ps -> exceptions_per_area + 1 ) ; <S2SV_EndBug> next_free = ++ ps -> next_free ; if ( sector_div ( next_free , stride ) == 1 ) <S2SV_StartBug> ps -> next_free ++ ; <S2SV_EndBug> atomic_inc ( & ps -> pending_count ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( store ) <S2SV_ModEnd> ; sector_t size <S2SV_ModStart> -> next_free ; <S2SV_ModEnd> ps -> next_free <S2SV_ModStart> -> next_free ++ ; skip_metadata ( ps )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19073\n\n```\nCWE-401 static int htc_setup_complete ( struct htc_target * target ) { struct sk_buff * skb ; struct htc_comp_msg * comp_msg ; int ret = 0 ; unsigned long time_left ; skb = alloc_skb ( 50 + sizeof ( struct htc_frame_hdr ) , GFP_ATOMIC ) ; if ( ! skb ) { dev_err ( target -> dev , \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>send<S2SV_blank>buffer\\\\n\" ) ; return - ENOMEM ; } skb_reserve ( skb , sizeof ( struct htc_frame_hdr ) ) ; comp_msg = skb_put ( skb , sizeof ( struct htc_comp_msg ) ) ; comp_msg -> msg_id = cpu_to_be16 ( HTC_MSG_SETUP_COMPLETE_ID ) ; target -> htc_flags |= HTC_OP_START_WAIT ; ret = htc_issue_send ( target , skb , skb -> len , 0 , ENDPOINT0 ) ; if ( ret ) goto err ; time_left = wait_for_completion_timeout ( & target -> cmd_wait , HZ ) ; if ( ! time_left ) { dev_err ( target -> dev , \"HTC<S2SV_blank>start<S2SV_blank>timeout\\\\n\" ) ; <S2SV_StartBug> return - ETIMEDOUT ; <S2SV_EndBug> } return 0 ; err : kfree_skb ( skb ) ; return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"HTC<S2SV_blank>start<S2SV_blank>timeout\\\\n\" ) ; kfree_skb ( skb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13000\n\n```\nCWE-125 u_int ieee802_15_4_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int caplen = h -> caplen ; u_int hdrlen ; uint16_t fc ; uint8_t seq ; uint16_t panid = 0 ; if ( caplen < 3 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return caplen ; } hdrlen = 3 ; fc = EXTRACT_LE_16BITS ( p ) ; seq = EXTRACT_LE_8BITS ( p + 2 ) ; p += 3 ; caplen -= 3 ; ND_PRINT ( ( ndo , \"IEEE<S2SV_blank>802.15.4<S2SV_blank>%s<S2SV_blank>packet<S2SV_blank>\" , ftypes [ FC_FRAME_TYPE ( fc ) ] ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"seq<S2SV_blank>%02x<S2SV_blank>\" , seq ) ) ; switch ( FC_DEST_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( fc & FC_PAN_ID_COMPRESSION ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>destination<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return hdrlen ; case FC_ADDRESSING_MODE_SHORT : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_StartBug> ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p + 2 ) ) ) ; <S2SV_EndBug> p += 2 ; caplen -= 2 ; hdrlen += 2 ; break ; case FC_ADDRESSING_MODE_LONG : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; p += 8 ; caplen -= 8 ; hdrlen += 8 ; break ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<<S2SV_blank>\" ) ) ; switch ( FC_SRC_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>source<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return 0 ; case FC_ADDRESSING_MODE_SHORT : if ( ! ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p ) ) ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; break ; case FC_ADDRESSING_MODE_LONG : if ( ! ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; p += 8 ; caplen -= 8 ; hdrlen += 8 ; break ; } if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , caplen ) ; return hdrlen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EXTRACT_LE_16BITS ( p <S2SV_ModEnd> ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 stmt_ty AsyncFunctionDef ( identifier name , arguments_ty args , asdl_seq * body , asdl_seq <S2SV_StartBug> * decorator_list , expr_ty returns , int lineno , int col_offset , <S2SV_EndBug> int end_lineno , int end_col_offset , PyArena * arena ) { stmt_ty p ; if ( ! name ) { PyErr_SetString ( PyExc_ValueError , \"field<S2SV_blank>name<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>AsyncFunctionDef\" ) ; return NULL ; } if ( ! args ) { PyErr_SetString ( PyExc_ValueError , \"field<S2SV_blank>args<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>AsyncFunctionDef\" ) ; return NULL ; } p = ( stmt_ty ) PyArena_Malloc ( arena , sizeof ( * p ) ) ; if ( ! p ) return NULL ; p -> kind = AsyncFunctionDef_kind ; p -> v . AsyncFunctionDef . name = name ; p -> v . AsyncFunctionDef . args = args ; p -> v . AsyncFunctionDef . body = body ; p -> v . AsyncFunctionDef . decorator_list = decorator_list ; <S2SV_StartBug> p -> v . AsyncFunctionDef . returns = returns ; <S2SV_EndBug> p -> lineno = lineno ; p -> col_offset = col_offset ; p -> end_lineno = end_lineno ; p -> end_col_offset = end_col_offset ; return p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> expr_ty returns , string type_comment , int <S2SV_ModEnd> lineno , int <S2SV_ModStart> returns = returns ; p -> v . AsyncFunctionDef . type_comment = type_comment\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 static void xen_irq_lateeoi_locked ( struct irq_info * info ) { evtchn_port_t evtchn ; <S2SV_StartBug> evtchn = info -> evtchn ; <S2SV_EndBug> <S2SV_StartBug> if ( ! VALID_EVTCHN ( evtchn ) ) <S2SV_EndBug> return ; unmask_evtchn ( evtchn ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> evtchn_port_t evtchn ; unsigned int cpu ; <S2SV_ModStart> ( evtchn ) || ! list_empty ( & info -> eoi_list ) ) return ; cpu = info -> eoi_cpu ; if ( info -> eoi_time && info -> irq_epoch == per_cpu ( irq_epoch , cpu ) ) { lateeoi_list_add ( info ) ; return ; } info -> eoi_time = 0 <S2SV_ModEnd> ; unmask_evtchn (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8176\n\n```\nCWE-119 static void dtls1_clear_queues ( SSL * s ) { pitem * item = NULL ; hm_fragment * frag = NULL ; DTLS1_RECORD_DATA * rdata ; while ( ( item = pqueue_pop ( s -> d1 -> unprocessed_rcds . q ) ) != NULL ) { rdata = ( DTLS1_RECORD_DATA * ) item -> data ; if ( rdata -> rbuf . buf ) { OPENSSL_free ( rdata -> rbuf . buf ) ; } OPENSSL_free ( item -> data ) ; pitem_free ( item ) ; } while ( ( item = pqueue_pop ( s -> d1 -> processed_rcds . q ) ) != NULL ) { rdata = ( DTLS1_RECORD_DATA * ) item -> data ; if ( rdata -> rbuf . buf ) { OPENSSL_free ( rdata -> rbuf . buf ) ; } OPENSSL_free ( item -> data ) ; pitem_free ( item ) ; } while ( ( item = pqueue_pop ( s -> d1 -> buffered_messages ) ) != NULL ) { frag = ( hm_fragment * ) item -> data ; OPENSSL_free ( frag -> fragment ) ; OPENSSL_free ( frag ) ; pitem_free ( item ) ; } while ( ( item = pqueue_pop ( s -> d1 -> sent_messages ) ) != NULL ) { frag = ( hm_fragment * ) item -> data ; OPENSSL_free ( frag -> fragment ) ; OPENSSL_free ( frag ) ; pitem_free ( item ) ; } while ( ( item = pqueue_pop ( s -> d1 -> buffered_app_data . q ) ) != NULL ) { <S2SV_StartBug> frag = ( hm_fragment * ) item -> data ; <S2SV_EndBug> OPENSSL_free ( frag -> fragment ) ; OPENSSL_free ( frag ) ; pitem_free ( item ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { rdata = ( DTLS1_RECORD_DATA * ) item -> data ; if ( rdata -> rbuf . buf ) { OPENSSL_free ( rdata -> rbuf . buf ) ; } OPENSSL_free ( item -> data <S2SV_ModEnd> ) ; pitem_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8_set_postproc ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { # if CONFIG_POSTPROC vp8_postproc_cfg_t * data = va_arg ( args , vp8_postproc_cfg_t * ) ; if ( data ) { ctx -> postproc_cfg_set = 1 ; ctx -> postproc_cfg = * ( ( vp8_postproc_cfg_t * ) data ) ; return VPX_CODEC_OK ; } else return VPX_CODEC_INVALID_PARAM ; # else <S2SV_StartBug> return VPX_CODEC_INCAPABLE ; <S2SV_EndBug> # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args <S2SV_ModStart> ; # else ( void ) ctx ; ( void ) args ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15946\n\n```\nCWE-119 static int asn1_decode_entry ( sc_context_t * ctx , struct sc_asn1_entry * entry , const u8 * obj , size_t objlen , int depth ) { void * parm = entry -> parm ; int ( * callback_func ) ( sc_context_t * nctx , void * arg , const u8 * nobj , size_t nobjlen , int ndepth ) ; size_t * len = ( size_t * ) entry -> arg ; int r = 0 ; callback_func = parm ; sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"%*.*sdecoding<S2SV_blank>\\'%s\\',<S2SV_blank>raw<S2SV_blank>data:%s%s\\\\n\" , depth , depth , \"\" , entry -> name , sc_dump_hex ( obj , objlen > 16 ? 16 : objlen ) , objlen > 16 ? \"...\" : \"\" ) ; switch ( entry -> type ) { case SC_ASN1_STRUCT : if ( parm != NULL ) r = asn1_decode ( ctx , ( struct sc_asn1_entry * ) parm , obj , objlen , NULL , NULL , 0 , depth + 1 ) ; break ; case SC_ASN1_NULL : break ; case SC_ASN1_BOOLEAN : if ( parm != NULL ) { if ( objlen != 1 ) { sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"invalid<S2SV_blank>ASN.1<S2SV_blank>object<S2SV_blank>length:<S2SV_blank>%\" SC_FORMAT_LEN_SIZE_T \"u\\\\n\" , objlen ) ; r = SC_ERROR_INVALID_ASN1_OBJECT ; } else * ( ( int * ) parm ) = obj [ 0 ] ? 1 : 0 ; } break ; case SC_ASN1_INTEGER : case SC_ASN1_ENUMERATED : if ( parm != NULL ) { r = sc_asn1_decode_integer ( obj , objlen , ( int * ) entry -> parm ) ; sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"%*.*sdecoding<S2SV_blank>\\'%s\\'<S2SV_blank>returned<S2SV_blank>%d\\\\n\" , depth , depth , \"\" , entry -> name , * ( ( int * ) entry -> parm ) ) ; } break ; case SC_ASN1_BIT_STRING_NI : case SC_ASN1_BIT_STRING : if ( parm != NULL ) { int invert = entry -> type == SC_ASN1_BIT_STRING ? 1 : 0 ; assert ( len != NULL ) ; if ( objlen < 1 ) { r = SC_ERROR_INVALID_ASN1_OBJECT ; break ; } if ( entry -> flags & SC_ASN1_ALLOC ) { u8 * * buf = ( u8 * * ) parm ; * buf = malloc ( objlen - 1 ) ; if ( * buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; break ; } * len = objlen - 1 ; parm = * buf ; } r = decode_bit_string ( obj , objlen , ( u8 * ) parm , * len , invert ) ; if ( r >= 0 ) { * len = r ; r = 0 ; } } break ; case SC_ASN1_BIT_FIELD : if ( parm != NULL ) r = decode_bit_field ( obj , objlen , ( u8 * ) parm , * len ) ; break ; case SC_ASN1_OCTET_STRING : if ( parm != NULL ) { size_t c ; assert ( len != NULL ) ; if ( ( entry -> flags & SC_ASN1_UNSIGNED ) <S2SV_StartBug> && obj [ 0 ] == 0x00 && objlen > 1 ) { <S2SV_EndBug> objlen -- ; obj ++ ; } if ( entry -> flags & SC_ASN1_ALLOC ) { u8 * * buf = ( u8 * * ) parm ; * buf = malloc ( objlen ) ; if ( * buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; break ; } c = * len = objlen ; parm = * buf ; } else c = objlen > * len ? * len : objlen ; memcpy ( parm , obj , c ) ; * len = c ; } break ; case SC_ASN1_GENERALIZEDTIME : if ( parm != NULL ) { size_t c ; assert ( len != NULL ) ; if ( entry -> flags & SC_ASN1_ALLOC ) { u8 * * buf = ( u8 * * ) parm ; * buf = malloc ( objlen ) ; if ( * buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; break ; } c = * len = objlen ; parm = * buf ; } else c = objlen > * len ? * len : objlen ; memcpy ( parm , obj , c ) ; * len = c ; } break ; case SC_ASN1_OBJECT : if ( parm != NULL ) r = sc_asn1_decode_object_id ( obj , objlen , ( struct sc_object_id * ) parm ) ; break ; case SC_ASN1_PRINTABLESTRING : case SC_ASN1_UTF8STRING : if ( parm != NULL ) { assert ( len != NULL ) ; if ( entry -> flags & SC_ASN1_ALLOC ) { u8 * * buf = ( u8 * * ) parm ; * buf = malloc ( objlen + 1 ) ; if ( * buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; break ; } * len = objlen + 1 ; parm = * buf ; } r = sc_asn1_decode_utf8string ( obj , objlen , ( u8 * ) parm , len ) ; if ( entry -> flags & SC_ASN1_ALLOC ) { * len -= 1 ; } } break ; case SC_ASN1_PATH : if ( entry -> parm != NULL ) r = asn1_decode_path ( ctx , obj , objlen , ( sc_path_t * ) parm , depth ) ; break ; case SC_ASN1_PKCS15_ID : if ( entry -> parm != NULL ) { struct sc_pkcs15_id * id = ( struct sc_pkcs15_id * ) parm ; size_t c = objlen > sizeof ( id -> value ) ? sizeof ( id -> value ) : objlen ; memcpy ( id -> value , obj , c ) ; id -> len = c ; } break ; case SC_ASN1_PKCS15_OBJECT : if ( entry -> parm != NULL ) r = asn1_decode_p15_object ( ctx , obj , objlen , ( struct sc_asn1_pkcs15_object * ) parm , depth ) ; break ; case SC_ASN1_ALGORITHM_ID : if ( entry -> parm != NULL ) r = sc_asn1_decode_algorithm_id ( ctx , obj , objlen , ( struct sc_algorithm_id * ) parm , depth ) ; break ; case SC_ASN1_SE_INFO : if ( entry -> parm != NULL ) r = asn1_decode_se_info ( ctx , obj , objlen , ( sc_pkcs15_sec_env_info_t * * * ) entry -> parm , len , depth ) ; break ; case SC_ASN1_CALLBACK : if ( entry -> parm != NULL ) r = callback_func ( ctx , entry -> arg , obj , objlen , depth ) ; break ; default : sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"invalid<S2SV_blank>ASN.1<S2SV_blank>type:<S2SV_blank>%d\\\\n\" , entry -> type ) ; return SC_ERROR_INVALID_ASN1_OBJECT ; } if ( r ) { sc_debug ( ctx , SC_LOG_DEBUG_ASN1 , \"decoding<S2SV_blank>of<S2SV_blank>ASN.1<S2SV_blank>object<S2SV_blank>\\'%s\\'<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , entry -> name , sc_strerror ( r ) ) ; return r ; } entry -> flags |= SC_ASN1_PRESENT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SC_ASN1_UNSIGNED ) && objlen > 1 && <S2SV_ModStart> ] == 0x00 <S2SV_ModEnd> ) { objlen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1928\n\n```\nCWE-200 static int do_video_set_spu_palette ( unsigned int fd , unsigned int cmd , struct compat_video_spu_palette __user * up ) { struct video_spu_palette __user * up_native ; compat_uptr_t palp ; int length , err ; err = get_user ( palp , & up -> palette ) ; <S2SV_StartBug> err |= get_user ( length , & up -> length ) ; <S2SV_EndBug> up_native = compat_alloc_user_space ( sizeof ( struct video_spu_palette ) ) ; err = put_user ( compat_ptr ( palp ) , & up_native -> palette ) ; err |= put_user ( length , & up_native -> length ) ; if ( err ) return - EFAULT ; err = sys_ioctl ( fd , cmd , ( unsigned long ) up_native ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> length ) ; if ( err ) return - EFAULT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int swp_handler ( struct pt_regs * regs , unsigned int instr ) { unsigned int address , destreg , data , type ; unsigned int res = 0 ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , regs -> ARM_pc ) ; <S2SV_EndBug> if ( current -> pid != previous_pid ) { pr_debug ( \"\\\\\"%s\\\\\"<S2SV_blank>(%ld)<S2SV_blank>uses<S2SV_blank>deprecated<S2SV_blank>SWP{B}<S2SV_blank>instruction\\\\n\" , current -> comm , ( unsigned long ) current -> pid ) ; previous_pid = current -> pid ; } address = regs -> uregs [ EXTRACT_REG_NUM ( instr , RN_OFFSET ) ] ; data = regs -> uregs [ EXTRACT_REG_NUM ( instr , RT2_OFFSET ) ] ; destreg = EXTRACT_REG_NUM ( instr , RT_OFFSET ) ; type = instr & TYPE_SWPB ; pr_debug ( \"addr<S2SV_blank>in<S2SV_blank>r%d->0x%08x,<S2SV_blank>dest<S2SV_blank>is<S2SV_blank>r%d,<S2SV_blank>source<S2SV_blank>in<S2SV_blank>r%d->0x%08x)\\\\n\" , EXTRACT_REG_NUM ( instr , RN_OFFSET ) , address , destreg , EXTRACT_REG_NUM ( instr , RT2_OFFSET ) , data ) ; if ( ! access_ok ( VERIFY_WRITE , ( address & ~ 3 ) , 4 ) ) { pr_debug ( \"SWP{B}<S2SV_blank>emulation:<S2SV_blank>access<S2SV_blank>to<S2SV_blank>%p<S2SV_blank>not<S2SV_blank>allowed!\\\\n\" , ( void * ) address ) ; res = - EFAULT ; } else { res = emulate_swpX ( address , & data , type ) ; } if ( res == 0 ) { regs -> ARM_pc += 4 ; regs -> uregs [ destreg ] = data ; } else if ( res == - EFAULT ) { set_segfault ( regs , address ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , regs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 int ext4_page_mkwrite ( struct vm_area_struct * vma , struct vm_fault * vmf ) { struct page * page = vmf -> page ; loff_t size ; unsigned long len ; int ret ; struct file * file = vma -> vm_file ; struct inode * inode = file_inode ( file ) ; struct address_space * mapping = inode -> i_mapping ; handle_t * handle ; get_block_t * get_block ; int retries = 0 ; sb_start_pagefault ( inode -> i_sb ) ; <S2SV_StartBug> file_update_time ( vma -> vm_file ) ; <S2SV_EndBug> if ( test_opt ( inode -> i_sb , DELALLOC ) && ! ext4_should_journal_data ( inode ) && ! ext4_nonda_switch ( inode -> i_sb ) ) { do { ret = block_page_mkwrite ( vma , vmf , ext4_da_get_block_prep ) ; } while ( ret == - ENOSPC && ext4_should_retry_alloc ( inode -> i_sb , & retries ) ) ; goto out_ret ; } lock_page ( page ) ; size = i_size_read ( inode ) ; if ( page -> mapping != mapping || page_offset ( page ) > size ) { unlock_page ( page ) ; ret = VM_FAULT_NOPAGE ; goto out ; } if ( page -> index == size >> PAGE_CACHE_SHIFT ) len = size & ~ PAGE_CACHE_MASK ; else len = PAGE_CACHE_SIZE ; if ( page_has_buffers ( page ) ) { if ( ! ext4_walk_page_buffers ( NULL , page_buffers ( page ) , 0 , len , NULL , ext4_bh_unmapped ) ) { wait_for_stable_page ( page ) ; ret = VM_FAULT_LOCKED ; goto out ; } } unlock_page ( page ) ; if ( ext4_should_dioread_nolock ( inode ) ) get_block = ext4_get_block_write ; else get_block = ext4_get_block ; retry_alloc : handle = ext4_journal_start ( inode , EXT4_HT_WRITE_PAGE , ext4_writepage_trans_blocks ( inode ) ) ; if ( IS_ERR ( handle ) ) { ret = VM_FAULT_SIGBUS ; goto out ; } ret = block_page_mkwrite ( vma , vmf , get_block ) ; if ( ! ret && ext4_should_journal_data ( inode ) ) { if ( ext4_walk_page_buffers ( handle , page_buffers ( page ) , 0 , PAGE_CACHE_SIZE , NULL , do_journal_get_write_access ) ) { unlock_page ( page ) ; ret = VM_FAULT_SIGBUS ; ext4_journal_stop ( handle ) ; goto out ; } ext4_set_inode_state ( inode , EXT4_STATE_JDATA ) ; } ext4_journal_stop ( handle ) ; if ( ret == - ENOSPC && ext4_should_retry_alloc ( inode -> i_sb , & retries ) ) goto retry_alloc ; out_ret : ret = block_page_mkwrite_return ( ret ) ; out : <S2SV_StartBug> sb_end_pagefault ( inode -> i_sb ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vma -> vm_file ) ; down_read ( & EXT4_I ( inode ) -> i_mmap_sem <S2SV_ModStart> ; out : up_read ( & EXT4_I ( inode ) -> i_mmap_sem ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9576\n\n```\nCWE-416 int blk_rq_map_user_iov ( struct request_queue * q , struct request * rq , struct rq_map_data * map_data , const struct iov_iter * iter , gfp_t gfp_mask ) { bool copy = false ; unsigned long align = q -> dma_pad_mask | queue_dma_alignment ( q ) ; struct bio * bio = NULL ; struct iov_iter i ; int ret ; <S2SV_StartBug> if ( map_data ) <S2SV_EndBug> copy = true ; else if ( iov_iter_alignment ( iter ) & align ) copy = true ; else if ( queue_virt_boundary ( q ) ) copy = queue_virt_boundary ( q ) & iov_iter_gap_alignment ( iter ) ; i = * iter ; do { ret = __blk_rq_map_user_iov ( rq , map_data , & i , gfp_mask , copy ) ; if ( ret ) goto unmap_rq ; if ( ! bio ) bio = rq -> bio ; } while ( iov_iter_count ( & i ) ) ; if ( ! bio_flagged ( bio , BIO_USER_MAPPED ) ) rq -> cmd_flags |= REQ_COPY_USER ; return 0 ; unmap_rq : __blk_rq_unmap_user ( bio ) ; <S2SV_StartBug> rq -> bio = NULL ; <S2SV_EndBug> return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! iter_is_iovec ( iter ) ) goto fail ; if ( <S2SV_ModStart> bio ) ; fail :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 static int do_ipv6_setsockopt ( struct sock * sk , int level , int optname , char __user * optval , unsigned int optlen ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct net * net = sock_net ( sk ) ; int val , valbool ; int retv = - ENOPROTOOPT ; bool needs_rtnl = setsockopt_needs_rtnl ( optname ) ; if ( ! optval ) val = 0 ; else { if ( optlen >= sizeof ( int ) ) { if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; } else val = 0 ; } valbool = ( val != 0 ) ; if ( ip6_mroute_opt ( optname ) ) return ip6_mroute_setsockopt ( sk , optname , optval , optlen ) ; if ( needs_rtnl ) rtnl_lock ( ) ; lock_sock ( sk ) ; switch ( optname ) { case IPV6_ADDRFORM : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val == PF_INET ) { struct ipv6_txoptions * opt ; struct sk_buff * pktopt ; if ( sk -> sk_type == SOCK_RAW ) break ; if ( sk -> sk_protocol == IPPROTO_UDP || sk -> sk_protocol == IPPROTO_UDPLITE ) { struct udp_sock * up = udp_sk ( sk ) ; if ( up -> pending == AF_INET6 ) { retv = - EBUSY ; break ; } } else if ( sk -> sk_protocol != IPPROTO_TCP ) break ; if ( sk -> sk_state != TCP_ESTABLISHED ) { retv = - ENOTCONN ; break ; } if ( ipv6_only_sock ( sk ) || ! ipv6_addr_v4mapped ( & sk -> sk_v6_daddr ) ) { retv = - EADDRNOTAVAIL ; break ; } fl6_free_socklist ( sk ) ; ipv6_sock_mc_close ( sk ) ; sk_refcnt_debug_dec ( sk ) ; if ( sk -> sk_protocol == IPPROTO_TCP ) { struct inet_connection_sock * icsk = inet_csk ( sk ) ; local_bh_disable ( ) ; sock_prot_inuse_add ( net , sk -> sk_prot , - 1 ) ; sock_prot_inuse_add ( net , & tcp_prot , 1 ) ; local_bh_enable ( ) ; sk -> sk_prot = & tcp_prot ; icsk -> icsk_af_ops = & ipv4_specific ; sk -> sk_socket -> ops = & inet_stream_ops ; sk -> sk_family = PF_INET ; tcp_sync_mss ( sk , icsk -> icsk_pmtu_cookie ) ; } else { struct proto * prot = & udp_prot ; if ( sk -> sk_protocol == IPPROTO_UDPLITE ) prot = & udplite_prot ; local_bh_disable ( ) ; sock_prot_inuse_add ( net , sk -> sk_prot , - 1 ) ; sock_prot_inuse_add ( net , prot , 1 ) ; local_bh_enable ( ) ; sk -> sk_prot = prot ; sk -> sk_socket -> ops = & inet_dgram_ops ; sk -> sk_family = PF_INET ; } <S2SV_StartBug> opt = xchg ( & np -> opt , NULL ) ; <S2SV_EndBug> if ( opt ) <S2SV_StartBug> sock_kfree_s ( sk , opt , opt -> tot_len ) ; <S2SV_EndBug> pktopt = xchg ( & np -> pktoptions , NULL ) ; kfree_skb ( pktopt ) ; sk -> sk_destruct = inet_sock_destruct ; sk_refcnt_debug_inc ( sk ) ; module_put ( THIS_MODULE ) ; retv = 0 ; break ; } goto e_inval ; case IPV6_V6ONLY : if ( optlen < sizeof ( int ) || inet_sk ( sk ) -> inet_num ) goto e_inval ; sk -> sk_ipv6only = valbool ; retv = 0 ; break ; case IPV6_RECVPKTINFO : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxinfo = valbool ; retv = 0 ; break ; case IPV6_2292PKTINFO : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxoinfo = valbool ; retv = 0 ; break ; case IPV6_RECVHOPLIMIT : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxhlim = valbool ; retv = 0 ; break ; case IPV6_2292HOPLIMIT : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxohlim = valbool ; retv = 0 ; break ; case IPV6_RECVRTHDR : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . srcrt = valbool ; retv = 0 ; break ; case IPV6_2292RTHDR : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . osrcrt = valbool ; retv = 0 ; break ; case IPV6_RECVHOPOPTS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . hopopts = valbool ; retv = 0 ; break ; case IPV6_2292HOPOPTS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . ohopopts = valbool ; retv = 0 ; break ; case IPV6_RECVDSTOPTS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . dstopts = valbool ; retv = 0 ; break ; case IPV6_2292DSTOPTS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . odstopts = valbool ; retv = 0 ; break ; case IPV6_TCLASS : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val < - 1 || val > 0xff ) goto e_inval ; if ( val == - 1 ) val = 0 ; np -> tclass = val ; retv = 0 ; break ; case IPV6_RECVTCLASS : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxtclass = valbool ; retv = 0 ; break ; case IPV6_FLOWINFO : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxflow = valbool ; retv = 0 ; break ; case IPV6_RECVPATHMTU : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxpmtu = valbool ; retv = 0 ; break ; case IPV6_TRANSPARENT : if ( valbool && ! ns_capable ( net -> user_ns , CAP_NET_ADMIN ) && ! ns_capable ( net -> user_ns , CAP_NET_RAW ) ) { retv = - EPERM ; break ; } if ( optlen < sizeof ( int ) ) goto e_inval ; inet_sk ( sk ) -> transparent = valbool ; retv = 0 ; break ; case IPV6_RECVORIGDSTADDR : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> rxopt . bits . rxorigdstaddr = valbool ; retv = 0 ; break ; case IPV6_HOPOPTS : case IPV6_RTHDRDSTOPTS : case IPV6_RTHDR : case IPV6_DSTOPTS : { struct ipv6_txoptions * opt ; if ( optlen == 0 ) optval = NULL ; else if ( ! optval ) goto e_inval ; else if ( optlen < sizeof ( struct ipv6_opt_hdr ) || optlen & 0x7 || optlen > 8 * 255 ) goto e_inval ; retv = - EPERM ; if ( optname != IPV6_RTHDR && ! ns_capable ( net -> user_ns , CAP_NET_RAW ) ) break ; <S2SV_StartBug> opt = ipv6_renew_options ( sk , np -> opt , optname , <S2SV_EndBug> ( struct ipv6_opt_hdr __user * ) optval , optlen ) ; if ( IS_ERR ( opt ) ) { retv = PTR_ERR ( opt ) ; break ; } retv = - EINVAL ; if ( optname == IPV6_RTHDR && opt && opt -> srcrt ) { struct ipv6_rt_hdr * rthdr = opt -> srcrt ; switch ( rthdr -> type ) { # if IS_ENABLED ( CONFIG_IPV6_MIP6 ) case IPV6_SRCRT_TYPE_2 : if ( rthdr -> hdrlen != 2 || rthdr -> segments_left != 1 ) goto sticky_done ; break ; # endif default : goto sticky_done ; } } retv = 0 ; opt = ipv6_update_options ( sk , opt ) ; sticky_done : if ( opt ) <S2SV_StartBug> sock_kfree_s ( sk , opt , opt -> tot_len ) ; <S2SV_EndBug> break ; } case IPV6_PKTINFO : { struct in6_pktinfo pkt ; if ( optlen == 0 ) goto e_inval ; else if ( optlen < sizeof ( struct in6_pktinfo ) || ! optval ) goto e_inval ; if ( copy_from_user ( & pkt , optval , sizeof ( struct in6_pktinfo ) ) ) { retv = - EFAULT ; break ; } if ( sk -> sk_bound_dev_if && pkt . ipi6_ifindex != sk -> sk_bound_dev_if ) goto e_inval ; np -> sticky_pktinfo . ipi6_ifindex = pkt . ipi6_ifindex ; np -> sticky_pktinfo . ipi6_addr = pkt . ipi6_addr ; retv = 0 ; break ; } case IPV6_2292PKTOPTIONS : { struct ipv6_txoptions * opt = NULL ; struct msghdr msg ; struct flowi6 fl6 ; int junk ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . flowi6_mark = sk -> sk_mark ; if ( optlen == 0 ) goto update ; retv = - EINVAL ; if ( optlen > 64 * 1024 ) break ; opt = sock_kmalloc ( sk , sizeof ( * opt ) + optlen , GFP_KERNEL ) ; retv = - ENOBUFS ; if ( ! opt ) break ; memset ( opt , 0 , sizeof ( * opt ) ) ; <S2SV_StartBug> opt -> tot_len = sizeof ( * opt ) + optlen ; <S2SV_EndBug> retv = - EFAULT ; if ( copy_from_user ( opt + 1 , optval , optlen ) ) goto done ; msg . msg_controllen = optlen ; msg . msg_control = ( void * ) ( opt + 1 ) ; retv = ip6_datagram_send_ctl ( net , sk , & msg , & fl6 , opt , & junk , & junk , & junk ) ; if ( retv ) goto done ; update : retv = 0 ; opt = ipv6_update_options ( sk , opt ) ; done : if ( opt ) <S2SV_StartBug> sock_kfree_s ( sk , opt , opt -> tot_len ) ; <S2SV_EndBug> break ; } case IPV6_UNICAST_HOPS : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val > 255 || val < - 1 ) goto e_inval ; np -> hop_limit = val ; retv = 0 ; break ; case IPV6_MULTICAST_HOPS : if ( sk -> sk_type == SOCK_STREAM ) break ; if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val > 255 || val < - 1 ) goto e_inval ; np -> mcast_hops = ( val == - 1 ? IPV6_DEFAULT_MCASTHOPS : val ) ; retv = 0 ; break ; case IPV6_MULTICAST_LOOP : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val != valbool ) goto e_inval ; np -> mc_loop = valbool ; retv = 0 ; break ; case IPV6_UNICAST_IF : { struct net_device * dev = NULL ; int ifindex ; if ( optlen != sizeof ( int ) ) goto e_inval ; ifindex = ( __force int ) ntohl ( ( __force __be32 ) val ) ; if ( ifindex == 0 ) { np -> ucast_oif = 0 ; retv = 0 ; break ; } dev = dev_get_by_index ( net , ifindex ) ; retv = - EADDRNOTAVAIL ; if ( ! dev ) break ; dev_put ( dev ) ; retv = - EINVAL ; if ( sk -> sk_bound_dev_if ) break ; np -> ucast_oif = ifindex ; retv = 0 ; break ; } case IPV6_MULTICAST_IF : if ( sk -> sk_type == SOCK_STREAM ) break ; if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val ) { struct net_device * dev ; if ( sk -> sk_bound_dev_if && sk -> sk_bound_dev_if != val ) goto e_inval ; dev = dev_get_by_index ( net , val ) ; if ( ! dev ) { retv = - ENODEV ; break ; } dev_put ( dev ) ; } np -> mcast_oif = val ; retv = 0 ; break ; case IPV6_ADD_MEMBERSHIP : case IPV6_DROP_MEMBERSHIP : { struct ipv6_mreq mreq ; if ( optlen < sizeof ( struct ipv6_mreq ) ) goto e_inval ; retv = - EPROTO ; if ( inet_sk ( sk ) -> is_icsk ) break ; retv = - EFAULT ; if ( copy_from_user ( & mreq , optval , sizeof ( struct ipv6_mreq ) ) ) break ; if ( optname == IPV6_ADD_MEMBERSHIP ) retv = ipv6_sock_mc_join ( sk , mreq . ipv6mr_ifindex , & mreq . ipv6mr_multiaddr ) ; else retv = ipv6_sock_mc_drop ( sk , mreq . ipv6mr_ifindex , & mreq . ipv6mr_multiaddr ) ; break ; } case IPV6_JOIN_ANYCAST : case IPV6_LEAVE_ANYCAST : { struct ipv6_mreq mreq ; if ( optlen < sizeof ( struct ipv6_mreq ) ) goto e_inval ; retv = - EFAULT ; if ( copy_from_user ( & mreq , optval , sizeof ( struct ipv6_mreq ) ) ) break ; if ( optname == IPV6_JOIN_ANYCAST ) retv = ipv6_sock_ac_join ( sk , mreq . ipv6mr_ifindex , & mreq . ipv6mr_acaddr ) ; else retv = ipv6_sock_ac_drop ( sk , mreq . ipv6mr_ifindex , & mreq . ipv6mr_acaddr ) ; break ; } case MCAST_JOIN_GROUP : case MCAST_LEAVE_GROUP : { struct group_req greq ; struct sockaddr_in6 * psin6 ; if ( optlen < sizeof ( struct group_req ) ) goto e_inval ; retv = - EFAULT ; if ( copy_from_user ( & greq , optval , sizeof ( struct group_req ) ) ) break ; if ( greq . gr_group . ss_family != AF_INET6 ) { retv = - EADDRNOTAVAIL ; break ; } psin6 = ( struct sockaddr_in6 * ) & greq . gr_group ; if ( optname == MCAST_JOIN_GROUP ) retv = ipv6_sock_mc_join ( sk , greq . gr_interface , & psin6 -> sin6_addr ) ; else retv = ipv6_sock_mc_drop ( sk , greq . gr_interface , & psin6 -> sin6_addr ) ; break ; } case MCAST_JOIN_SOURCE_GROUP : case MCAST_LEAVE_SOURCE_GROUP : case MCAST_BLOCK_SOURCE : case MCAST_UNBLOCK_SOURCE : { struct group_source_req greqs ; int omode , add ; if ( optlen < sizeof ( struct group_source_req ) ) goto e_inval ; if ( copy_from_user ( & greqs , optval , sizeof ( greqs ) ) ) { retv = - EFAULT ; break ; } if ( greqs . gsr_group . ss_family != AF_INET6 || greqs . gsr_source . ss_family != AF_INET6 ) { retv = - EADDRNOTAVAIL ; break ; } if ( optname == MCAST_BLOCK_SOURCE ) { omode = MCAST_EXCLUDE ; add = 1 ; } else if ( optname == MCAST_UNBLOCK_SOURCE ) { omode = MCAST_EXCLUDE ; add = 0 ; } else if ( optname == MCAST_JOIN_SOURCE_GROUP ) { struct sockaddr_in6 * psin6 ; psin6 = ( struct sockaddr_in6 * ) & greqs . gsr_group ; retv = ipv6_sock_mc_join ( sk , greqs . gsr_interface , & psin6 -> sin6_addr ) ; if ( retv && retv != - EADDRINUSE ) break ; omode = MCAST_INCLUDE ; add = 1 ; } else { omode = MCAST_INCLUDE ; add = 0 ; } retv = ip6_mc_source ( add , omode , sk , & greqs ) ; break ; } case MCAST_MSFILTER : { struct group_filter * gsf ; if ( optlen < GROUP_FILTER_SIZE ( 0 ) ) goto e_inval ; if ( optlen > sysctl_optmem_max ) { retv = - ENOBUFS ; break ; } gsf = kmalloc ( optlen , GFP_KERNEL ) ; if ( ! gsf ) { retv = - ENOBUFS ; break ; } retv = - EFAULT ; if ( copy_from_user ( gsf , optval , optlen ) ) { kfree ( gsf ) ; break ; } if ( gsf -> gf_numsrc >= 0x1ffffffU || gsf -> gf_numsrc > sysctl_mld_max_msf ) { kfree ( gsf ) ; retv = - ENOBUFS ; break ; } if ( GROUP_FILTER_SIZE ( gsf -> gf_numsrc ) > optlen ) { kfree ( gsf ) ; retv = - EINVAL ; break ; } retv = ip6_mc_msfilter ( sk , gsf ) ; kfree ( gsf ) ; break ; } case IPV6_ROUTER_ALERT : if ( optlen < sizeof ( int ) ) goto e_inval ; retv = ip6_ra_control ( sk , val ) ; break ; case IPV6_MTU_DISCOVER : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val < IPV6_PMTUDISC_DONT || val > IPV6_PMTUDISC_OMIT ) goto e_inval ; np -> pmtudisc = val ; retv = 0 ; break ; case IPV6_MTU : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val && val < IPV6_MIN_MTU ) goto e_inval ; np -> frag_size = val ; retv = 0 ; break ; case IPV6_RECVERR : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> recverr = valbool ; if ( ! val ) skb_queue_purge ( & sk -> sk_error_queue ) ; retv = 0 ; break ; case IPV6_FLOWINFO_SEND : if ( optlen < sizeof ( int ) ) goto e_inval ; np -> sndflow = valbool ; retv = 0 ; break ; case IPV6_FLOWLABEL_MGR : retv = ipv6_flowlabel_opt ( sk , optval , optlen ) ; break ; case IPV6_IPSEC_POLICY : case IPV6_XFRM_POLICY : retv = - EPERM ; if ( ! ns_capable ( net -> user_ns , CAP_NET_ADMIN ) ) break ; retv = xfrm_user_policy ( sk , optname , optval , optlen ) ; break ; case IPV6_ADDR_PREFERENCES : { unsigned int pref = 0 ; unsigned int prefmask = ~ 0 ; if ( optlen < sizeof ( int ) ) goto e_inval ; retv = - EINVAL ; switch ( val & ( IPV6_PREFER_SRC_PUBLIC | IPV6_PREFER_SRC_TMP | IPV6_PREFER_SRC_PUBTMP_DEFAULT ) ) { case IPV6_PREFER_SRC_PUBLIC : pref |= IPV6_PREFER_SRC_PUBLIC ; break ; case IPV6_PREFER_SRC_TMP : pref |= IPV6_PREFER_SRC_TMP ; break ; case IPV6_PREFER_SRC_PUBTMP_DEFAULT : break ; case 0 : goto pref_skip_pubtmp ; default : goto e_inval ; } prefmask &= ~ ( IPV6_PREFER_SRC_PUBLIC | IPV6_PREFER_SRC_TMP ) ; pref_skip_pubtmp : switch ( val & ( IPV6_PREFER_SRC_HOME | IPV6_PREFER_SRC_COA ) ) { case IPV6_PREFER_SRC_HOME : break ; case IPV6_PREFER_SRC_COA : pref |= IPV6_PREFER_SRC_COA ; case 0 : goto pref_skip_coa ; default : goto e_inval ; } prefmask &= ~ IPV6_PREFER_SRC_COA ; pref_skip_coa : switch ( val & ( IPV6_PREFER_SRC_CGA | IPV6_PREFER_SRC_NONCGA ) ) { case IPV6_PREFER_SRC_CGA : case IPV6_PREFER_SRC_NONCGA : case 0 : break ; default : goto e_inval ; } np -> srcprefs = ( np -> srcprefs & prefmask ) | pref ; retv = 0 ; break ; } case IPV6_MINHOPCOUNT : if ( optlen < sizeof ( int ) ) goto e_inval ; if ( val < 0 || val > 255 ) goto e_inval ; np -> min_hopcount = val ; retv = 0 ; break ; case IPV6_DONTFRAG : np -> dontfrag = valbool ; retv = 0 ; break ; case IPV6_AUTOFLOWLABEL : np -> autoflowlabel = valbool ; retv = 0 ; break ; } release_sock ( sk ) ; if ( needs_rtnl ) rtnl_unlock ( ) ; return retv ; e_inval : release_sock ( sk ) ; if ( needs_rtnl ) rtnl_unlock ( ) ; return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = xchg ( ( __force struct ipv6_txoptions * * ) <S2SV_ModStart> ( opt ) { atomic_sub ( opt -> tot_len , & sk -> sk_omem_alloc ) ; txopt_put ( opt ) ; } <S2SV_ModEnd> pktopt = xchg <S2SV_ModStart> ; opt = rcu_dereference_protected ( np -> opt , sock_owned_by_user ( sk ) ) ; opt = <S2SV_ModStart> ( sk , <S2SV_ModEnd> opt , optname <S2SV_ModStart> ( opt ) { atomic_sub ( opt -> tot_len , & sk -> sk_omem_alloc ) ; txopt_put ( opt ) ; } <S2SV_ModEnd> break ; } <S2SV_ModStart> ) ) ; atomic_set ( & opt -> refcnt , 1 ) ; <S2SV_ModStart> ( opt ) { atomic_sub ( opt -> tot_len , & sk -> sk_omem_alloc ) ; txopt_put ( opt ) ; } <S2SV_ModEnd> break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9051\n\n```\nCWE-476 static int nsv_read_chunk ( AVFormatContext * s , int fill_header ) { NSVContext * nsv = s -> priv_data ; AVIOContext * pb = s -> pb ; AVStream * st [ 2 ] = { NULL , NULL } ; NSVStream * nst ; AVPacket * pkt ; int i , err = 0 ; uint8_t auxcount ; uint32_t vsize ; uint16_t asize ; <S2SV_StartBug> uint16_t auxsize ; <S2SV_EndBug> if ( nsv -> ahead [ 0 ] . data || nsv -> ahead [ 1 ] . data ) return 0 ; null_chunk_retry : if ( pb -> eof_reached ) return - 1 ; for ( i = 0 ; i < NSV_MAX_RESYNC_TRIES && nsv -> state < NSV_FOUND_NSVS && ! err ; i ++ ) err = nsv_resync ( s ) ; if ( err < 0 ) return err ; if ( nsv -> state == NSV_FOUND_NSVS ) err = nsv_parse_NSVs_header ( s ) ; if ( err < 0 ) return err ; if ( nsv -> state != NSV_HAS_READ_NSVS && nsv -> state != NSV_FOUND_BEEF ) return - 1 ; auxcount = avio_r8 ( pb ) ; vsize = avio_rl16 ( pb ) ; asize = avio_rl16 ( pb ) ; vsize = ( vsize << 4 ) | ( auxcount >> 4 ) ; auxcount &= 0x0f ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>CHUNK<S2SV_blank>%\" PRIu8 \"<S2SV_blank>aux,<S2SV_blank>%\" PRIu32 \"<S2SV_blank>bytes<S2SV_blank>video,<S2SV_blank>%\" PRIu16 \"<S2SV_blank>bytes<S2SV_blank>audio\\\\n\" , auxcount , vsize , asize ) ; for ( i = 0 ; i < auxcount ; i ++ ) { uint32_t av_unused auxtag ; auxsize = avio_rl16 ( pb ) ; auxtag = avio_rl32 ( pb ) ; avio_skip ( pb , auxsize ) ; vsize -= auxsize + sizeof ( uint16_t ) + sizeof ( uint32_t ) ; } if ( pb -> eof_reached ) return - 1 ; if ( ! vsize && ! asize ) { nsv -> state = NSV_UNSYNC ; goto null_chunk_retry ; } if ( s -> nb_streams > 0 ) st [ s -> streams [ 0 ] -> id ] = s -> streams [ 0 ] ; if ( s -> nb_streams > 1 ) st [ s -> streams [ 1 ] -> id ] = s -> streams [ 1 ] ; if ( vsize && st [ NSV_ST_VIDEO ] ) { nst = st [ NSV_ST_VIDEO ] -> priv_data ; pkt = & nsv -> ahead [ NSV_ST_VIDEO ] ; <S2SV_StartBug> av_get_packet ( pb , pkt , vsize ) ; <S2SV_EndBug> pkt -> stream_index = st [ NSV_ST_VIDEO ] -> index ; pkt -> dts = nst -> frame_offset ; pkt -> flags |= nsv -> state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0 ; for ( i = 0 ; i < FFMIN ( 8 , vsize ) ; i ++ ) av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>video:<S2SV_blank>[%d]<S2SV_blank>=<S2SV_blank>%02\" PRIx8 \"\\\\n\" , i , pkt -> data [ i ] ) ; } if ( st [ NSV_ST_VIDEO ] ) ( ( NSVStream * ) st [ NSV_ST_VIDEO ] -> priv_data ) -> frame_offset ++ ; if ( asize && st [ NSV_ST_AUDIO ] ) { nst = st [ NSV_ST_AUDIO ] -> priv_data ; pkt = & nsv -> ahead [ NSV_ST_AUDIO ] ; if ( asize && st [ NSV_ST_AUDIO ] -> codecpar -> codec_tag == MKTAG ( 'P' , 'C' , 'M' , '<S2SV_blank>' ) ) { uint8_t bps ; uint8_t channels ; uint16_t samplerate ; bps = avio_r8 ( pb ) ; channels = avio_r8 ( pb ) ; samplerate = avio_rl16 ( pb ) ; if ( ! channels || ! samplerate ) return AVERROR_INVALIDDATA ; asize -= 4 ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>RAWAUDIO:<S2SV_blank>bps<S2SV_blank>%\" PRIu8 \",<S2SV_blank>nchan<S2SV_blank>%\" PRIu8 \",<S2SV_blank>srate<S2SV_blank>%\" PRIu16 \"\\\\n\" , bps , channels , samplerate ) ; if ( fill_header ) { st [ NSV_ST_AUDIO ] -> need_parsing = AVSTREAM_PARSE_NONE ; if ( bps != 16 ) { av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>AUDIO<S2SV_blank>bit/sample<S2SV_blank>!=<S2SV_blank>16<S2SV_blank>(%\" PRIu8 \")!!!\\\\n\" , bps ) ; } bps /= channels ; if ( bps == 8 ) st [ NSV_ST_AUDIO ] -> codecpar -> codec_id = AV_CODEC_ID_PCM_U8 ; samplerate /= 4 ; channels = 1 ; st [ NSV_ST_AUDIO ] -> codecpar -> channels = channels ; st [ NSV_ST_AUDIO ] -> codecpar -> sample_rate = samplerate ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>RAWAUDIO:<S2SV_blank>bps<S2SV_blank>%\" PRIu8 \",<S2SV_blank>nchan<S2SV_blank>%\" PRIu8 \",<S2SV_blank>srate<S2SV_blank>%\" PRIu16 \"\\\\n\" , bps , channels , samplerate ) ; } } <S2SV_StartBug> av_get_packet ( pb , pkt , asize ) ; <S2SV_EndBug> pkt -> stream_index = st [ NSV_ST_AUDIO ] -> index ; pkt -> flags |= nsv -> state == NSV_HAS_READ_NSVS ? AV_PKT_FLAG_KEY : 0 ; if ( nsv -> state == NSV_HAS_READ_NSVS && st [ NSV_ST_VIDEO ] ) { pkt -> dts = ( ( ( NSVStream * ) st [ NSV_ST_VIDEO ] -> priv_data ) -> frame_offset - 1 ) ; pkt -> dts *= ( int64_t ) 1000 * nsv -> framerate . den ; pkt -> dts += ( int64_t ) nsv -> avsync * nsv -> framerate . num ; av_log ( s , AV_LOG_TRACE , \"NSV<S2SV_blank>AUDIO:<S2SV_blank>sync:%\" PRId16 \",<S2SV_blank>dts:%\" PRId64 , nsv -> avsync , pkt -> dts ) ; } nst -> frame_offset ++ ; } nsv -> state = NSV_UNSYNC ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint16_t auxsize ; int ret <S2SV_ModStart> NSV_ST_VIDEO ] ; if ( ( ret = <S2SV_ModStart> , vsize ) ) < 0 ) return ret <S2SV_ModStart> ; } } if ( ( ret = <S2SV_ModStart> , asize ) ) < 0 ) return ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7854\n\n```\nCWE-125 static RList * r_bin_wasm_get_global_entries ( RBinWasmObj * bin , RBinWasmSection * sec ) { RList * ret = NULL ; RBinWasmGlobalEntry * ptr = NULL ; <S2SV_StartBug> int buflen = bin -> buf -> length ; <S2SV_EndBug> if ( sec -> payload_data + 32 > buflen ) { return NULL ; } if ( ! ( ret = r_list_newf ( ( RListFree ) free ) ) ) { return NULL ; } ut8 * buf = bin -> buf -> buf + ( ut32 ) sec -> payload_data ; ut32 len = sec -> payload_len ; ut32 count = sec -> count ; ut32 i = 0 , r = 0 ; while ( i < len && len < buflen && r < count ) { if ( ! ( ptr = R_NEW0 ( RBinWasmGlobalEntry ) ) ) { return ret ; } if ( len + 8 > buflen || ! ( consume_u8 ( buf + i , buf + len , ( ut8 * ) & ptr -> content_type , & i ) ) ) { goto beach ; } if ( len + 8 > buflen || ! ( consume_u8 ( buf + i , buf + len , & ptr -> mutability , & i ) ) ) { goto beach ; } if ( len + 8 > buflen || ! ( consume_init_expr ( buf + i , buf + len , R_BIN_WASM_END_OF_CODE , NULL , & i ) ) ) { goto beach ; } r_list_append ( ret , ptr ) ; r ++ ; } return ret ; beach : free ( ptr ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; if ( ! ( ret = r_list_newf ( ( RListFree ) free ) ) ) { return NULL ; } ut8 * buf = bin -> buf -> buf + ( ut32 ) sec -> payload_data ; <S2SV_ModStart> buf -> length - <S2SV_ModEnd> ( ut32 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_setup_src_planes ( MACROBLOCK * x , const YV12_BUFFER_CONFIG * src , int mi_row , int mi_col ) { <S2SV_StartBug> uint8_t * const buffers [ 4 ] = { src -> y_buffer , src -> u_buffer , src -> v_buffer , <S2SV_EndBug> src -> alpha_buffer } ; <S2SV_StartBug> const int strides [ 4 ] = { src -> y_stride , src -> uv_stride , src -> uv_stride , <S2SV_EndBug> src -> alpha_stride } ; int i ; x -> e_mbd . cur_buf = src ; for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) setup_pred_plane ( & x -> plane [ i ] . src , buffers [ i ] , strides [ i ] , mi_row , mi_col , NULL , x -> e_mbd . plane [ i ] . subsampling_x , x -> e_mbd . plane [ i ] . subsampling_y ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const buffers [ 3 <S2SV_ModEnd> ] = { <S2SV_ModStart> src -> v_buffer <S2SV_ModEnd> } ; const <S2SV_ModStart> int strides [ 3 <S2SV_ModEnd> ] = { <S2SV_ModStart> src -> uv_stride <S2SV_ModEnd> } ; int\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18922\n\n```\nCWE-787 static int webSocketsDecodeHybi ( rfbClientPtr cl , char * dst , int len ) { <S2SV_StartBug> char * buf , * payload ; <S2SV_EndBug> uint32_t * payload32 ; <S2SV_StartBug> int ret = - 1 , result = - 1 ; <S2SV_EndBug> <S2SV_StartBug> int total = 0 ; <S2SV_EndBug> ws_mask_t mask ; ws_header_t * header ; int i ; unsigned char opcode ; ws_ctx_t * wsctx = ( ws_ctx_t * ) cl -> wsctx ; int flength , fhlen ; if ( wsctx -> readbuflen ) { if ( wsctx -> readbuflen > len ) { memcpy ( dst , wsctx -> readbuf + wsctx -> readbufstart , len ) ; result = len ; wsctx -> readbuflen -= len ; wsctx -> readbufstart += len ; } else { memcpy ( dst , wsctx -> readbuf + wsctx -> readbufstart , wsctx -> readbuflen ) ; result = wsctx -> readbuflen ; wsctx -> readbuflen = 0 ; wsctx -> readbufstart = 0 ; } goto spor ; } buf = wsctx -> codeBufDecode ; header = ( ws_header_t * ) wsctx -> codeBufDecode ; ret = ws_peek ( cl , buf , B64LEN ( len ) + WSHLENMAX ) ; if ( ret < 2 ) { if ( - 1 == ret ) { int olderrno = errno ; rfbErr ( \"%s:<S2SV_blank>peek;<S2SV_blank>%m\\\\n\" , __func__ ) ; errno = olderrno ; <S2SV_StartBug> } else if ( 0 == ret ) { <S2SV_EndBug> result = 0 ; } else { errno = EAGAIN ; } goto spor ; } opcode = header -> b0 & 0x0f ; flength = header -> b1 & 0x7f ; if ( ! ( header -> b1 & 0x80 ) ) { rfbErr ( \"%s:<S2SV_blank>got<S2SV_blank>frame<S2SV_blank>without<S2SV_blank>mask\\\\n\" , __func__ , ret ) ; errno = EIO ; goto spor ; } if ( flength < 126 ) { fhlen = 2 ; mask = header -> u . m ; } else if ( flength == 126 && 4 <= ret ) { flength = WS_NTOH16 ( header -> u . s16 . l16 ) ; fhlen = 4 ; mask = header -> u . s16 . m16 ; } else if ( flength == 127 && 10 <= ret ) { flength = WS_NTOH64 ( header -> u . s64 . l64 ) ; fhlen = 10 ; mask = header -> u . s64 . m64 ; } else { rfbErr ( \"%s:<S2SV_blank>incomplete<S2SV_blank>frame<S2SV_blank>header\\\\n\" , __func__ , ret ) ; errno = EIO ; goto spor ; } total = fhlen + flength + 4 ; payload = buf + fhlen + 4 ; if ( - 1 == ( ret = ws_read ( cl , buf , total ) ) ) { int olderrno = errno ; rfbErr ( \"%s:<S2SV_blank>read;<S2SV_blank>%m\" , __func__ ) ; errno = olderrno ; return ret ; } else if ( ret < total ) { rfbLog ( \"%s:<S2SV_blank>read;<S2SV_blank>got<S2SV_blank>partial<S2SV_blank>data\\\\n\" , __func__ ) ; } else { buf [ ret ] = '\\\\0' ; } payload32 = ( uint32_t * ) payload ; for ( i = 0 ; i < flength / 4 ; i ++ ) { payload32 [ i ] ^= mask . u ; } for ( i *= 4 ; i < flength ; i ++ ) { payload [ i ] ^= mask . c [ i % 4 ] ; } switch ( opcode ) { case WS_OPCODE_CLOSE : rfbLog ( \"got<S2SV_blank>closure,<S2SV_blank>reason<S2SV_blank>%d\\\\n\" , WS_NTOH16 ( ( ( uint16_t * ) payload ) [ 0 ] ) ) ; errno = ECONNRESET ; break ; case WS_OPCODE_TEXT_FRAME : if ( - 1 == ( flength = b64_pton ( payload , ( unsigned char * ) wsctx -> codeBufDecode , sizeof ( wsctx -> codeBufDecode ) ) ) ) { rfbErr ( \"%s:<S2SV_blank>Base64<S2SV_blank>decode<S2SV_blank>error;<S2SV_blank>%m\\\\n\" , __func__ ) ; break ; } payload = wsctx -> codeBufDecode ; case WS_OPCODE_BINARY_FRAME : if ( flength > len ) { memcpy ( wsctx -> readbuf , payload + len , flength - len ) ; wsctx -> readbufstart = 0 ; wsctx -> readbuflen = flength - len ; flength = len ; } memcpy ( dst , payload , flength ) ; result = flength ; break ; default : rfbErr ( \"%s:<S2SV_blank>unhandled<S2SV_blank>opcode<S2SV_blank>%d,<S2SV_blank>b0:<S2SV_blank>%02x,<S2SV_blank>b1:<S2SV_blank>%02x\\\\n\" , __func__ , ( int ) opcode , header -> b0 , header -> b1 ) ; } spor : return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) { int result <S2SV_ModEnd> = - 1 <S2SV_ModStart> = - 1 ; ws_ctx_t * wsctx = ( ws_ctx_t * ) cl -> wsctx ; rfbLog ( \"%s_enter:<S2SV_blank>len=%d;<S2SV_blank>\" \"CTX:<S2SV_blank>readlen=%d<S2SV_blank>readPos=%p<S2SV_blank>\" \"writeTo=%p<S2SV_blank>\" \"state=%d<S2SV_blank>toRead=%d<S2SV_blank>remaining=%d<S2SV_blank>\" \"<S2SV_blank>nReadRaw=%d<S2SV_blank>carrylen=%d<S2SV_blank>carryBuf=%p\\\\n\" , __func__ , len , wsctx -> readlen , wsctx -> readPos , wsctx -> writePos , wsctx -> hybiDecodeState , wsctx -> nToRead , hybiRemaining ( wsctx ) , wsctx -> nReadRaw , wsctx -> carrylen , wsctx -> carryBuf ) ; switch ( wsctx -> hybiDecodeState ) { case WS_HYBI_STATE_HEADER_PENDING : wsctx -> hybiDecodeState = hybiReadHeader ( cl , & result ) ; if ( wsctx -> hybiDecodeState == WS_HYBI_STATE_ERR ) { goto spor ; } if ( wsctx -> hybiDecodeState != WS_HYBI_STATE_HEADER_PENDING ) { wsctx -> hybiDecodeState = hybiReadAndDecode ( cl , dst , len , & result ) ; } break ; case WS_HYBI_STATE_DATA_AVAILABLE : wsctx -> hybiDecodeState = hybiReturnData ( dst , len , wsctx , & result ) ; break ; case WS_HYBI_STATE_DATA_NEEDED : wsctx -> hybiDecodeState = hybiReadAndDecode ( cl , dst , len , & result ) ; break ; case WS_HYBI_STATE_CLOSE_REASON_PENDING : wsctx -> hybiDecodeState = hybiReadAndDecode ( cl , dst , len , & result ) ; break ; default : rfbErr ( \"%s:<S2SV_blank>called<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>state<S2SV_blank>%d\\\\n\" , wsctx -> hybiDecodeState ) ; <S2SV_ModEnd> result = - <S2SV_ModStart> - 1 ; errno = EIO ; wsctx -> hybiDecodeState = WS_HYBI_STATE_ERR ; } spor : if ( wsctx -> hybiDecodeState == WS_HYBI_STATE_FRAME_COMPLETE ) { rfbLog ( \"frame<S2SV_blank>received<S2SV_blank>successfully,<S2SV_blank>cleaning<S2SV_blank>up:<S2SV_blank>read=%d<S2SV_blank>hlen=%d<S2SV_blank>plen=%d\\\\n\" , wsctx -> header . nRead , wsctx -> header . headerLen , wsctx -> header . payloadLen ) ; hybiDecodeCleanup ( wsctx ) <S2SV_ModEnd> ; } else <S2SV_ModStart> else if ( wsctx -> hybiDecodeState == WS_HYBI_STATE_ERR ) { hybiDecodeCleanup ( wsctx ) ; } rfbLog ( \"%s_exit:<S2SV_blank>len=%d;<S2SV_blank>\" \"CTX:<S2SV_blank>readlen=%d<S2SV_blank>readPos=%p<S2SV_blank>\" \"writePos=%p<S2SV_blank>\" \"state=%d<S2SV_blank>toRead=%d<S2SV_blank>remaining=%d<S2SV_blank>\" \"nRead=%d<S2SV_blank>carrylen=%d<S2SV_blank>carryBuf=%p<S2SV_blank>\" \"result=%d\\\\n\" , __func__ , len , wsctx -> readlen , wsctx -> readPos , wsctx -> writePos , wsctx -> hybiDecodeState , wsctx -> nToRead , hybiRemaining ( wsctx ) , wsctx -> nReadRaw , wsctx -> carrylen , wsctx -> carryBuf , result ) ; return <S2SV_ModEnd> result ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static double get_prediction_decay_rate ( VP8_COMP * cpi , FIRSTPASS_STATS * next_frame ) { double prediction_decay_rate ; double motion_decay ; <S2SV_StartBug> double motion_pct = next_frame -> pcnt_motion ; <S2SV_EndBug> prediction_decay_rate = next_frame -> pcnt_inter ; motion_decay = ( 1.0 - ( motion_pct / 20.0 ) ) ; if ( motion_decay < prediction_decay_rate ) prediction_decay_rate = motion_decay ; { double this_mv_rabs ; double this_mv_cabs ; double distance_factor ; this_mv_rabs = fabs ( next_frame -> mvr_abs * motion_pct ) ; this_mv_cabs = fabs ( next_frame -> mvc_abs * motion_pct ) ; distance_factor = sqrt ( ( this_mv_rabs * this_mv_rabs ) + ( this_mv_cabs * this_mv_cabs ) ) / 250.0 ; distance_factor = ( ( distance_factor > 1.0 ) ? 0.0 : ( 1.0 - distance_factor ) ) ; if ( distance_factor < prediction_decay_rate ) prediction_decay_rate = distance_factor ; } return prediction_decay_rate ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> next_frame -> pcnt_motion ; ( void ) cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7008\n\n```\nCWE-000 static int decode_slice_header ( H264Context * h , H264Context * h0 ) { unsigned int first_mb_in_slice ; unsigned int pps_id ; int ret ; unsigned int slice_type , tmp , i , j ; int last_pic_structure , last_pic_droppable ; int must_reinit ; int needs_reinit = 0 ; int field_pic_flag , bottom_field_flag ; h -> me . qpel_put = h -> h264qpel . put_h264_qpel_pixels_tab ; h -> me . qpel_avg = h -> h264qpel . avg_h264_qpel_pixels_tab ; first_mb_in_slice = get_ue_golomb_long ( & h -> gb ) ; if ( first_mb_in_slice == 0 ) { if ( h0 -> current_slice && FIELD_PICTURE ( h ) ) { field_end ( h , 1 ) ; } h0 -> current_slice = 0 ; if ( ! h0 -> first_field ) { if ( h -> cur_pic_ptr && ! h -> droppable ) { ff_thread_report_progress ( & h -> cur_pic_ptr -> tf , INT_MAX , h -> picture_structure == PICT_BOTTOM_FIELD ) ; } h -> cur_pic_ptr = NULL ; } } slice_type = get_ue_golomb_31 ( & h -> gb ) ; if ( slice_type > 9 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"slice<S2SV_blank>type<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d)<S2SV_blank>at<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , slice_type , h -> mb_x , h -> mb_y ) ; return AVERROR_INVALIDDATA ; } if ( slice_type > 4 ) { slice_type -= 5 ; h -> slice_type_fixed = 1 ; } else h -> slice_type_fixed = 0 ; slice_type = golomb_to_pict_type [ slice_type ] ; h -> slice_type = slice_type ; h -> slice_type_nos = slice_type & 3 ; h -> pict_type = h -> slice_type ; pps_id = get_ue_golomb ( & h -> gb ) ; if ( pps_id >= MAX_PPS_COUNT ) { av_log ( h -> avctx , AV_LOG_ERROR , \"pps_id<S2SV_blank>%d<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , pps_id ) ; return AVERROR_INVALIDDATA ; } if ( ! h0 -> pps_buffers [ pps_id ] ) { av_log ( h -> avctx , AV_LOG_ERROR , \"non-existing<S2SV_blank>PPS<S2SV_blank>%u<S2SV_blank>referenced\\\\n\" , pps_id ) ; return AVERROR_INVALIDDATA ; } h -> pps = * h0 -> pps_buffers [ pps_id ] ; if ( ! h0 -> sps_buffers [ h -> pps . sps_id ] ) { av_log ( h -> avctx , AV_LOG_ERROR , \"non-existing<S2SV_blank>SPS<S2SV_blank>%u<S2SV_blank>referenced\\\\n\" , h -> pps . sps_id ) ; return AVERROR_INVALIDDATA ; } if ( h -> pps . sps_id != h -> current_sps_id || h0 -> sps_buffers [ h -> pps . sps_id ] -> new ) { h0 -> sps_buffers [ h -> pps . sps_id ] -> new = 0 ; h -> current_sps_id = h -> pps . sps_id ; h -> sps = * h0 -> sps_buffers [ h -> pps . sps_id ] ; if ( h -> mb_width != h -> sps . mb_width || h -> mb_height != h -> sps . mb_height * ( 2 - h -> sps . frame_mbs_only_flag ) || h -> avctx -> bits_per_raw_sample != h -> sps . bit_depth_luma || h -> cur_chroma_format_idc != h -> sps . chroma_format_idc ) needs_reinit = 1 ; if ( h -> bit_depth_luma != h -> sps . bit_depth_luma || h -> chroma_format_idc != h -> sps . chroma_format_idc ) { h -> bit_depth_luma = h -> sps . bit_depth_luma ; h -> chroma_format_idc = h -> sps . chroma_format_idc ; needs_reinit = 1 ; } if ( ( ret = h264_set_parameter_from_sps ( h ) ) < 0 ) return ret ; } h -> avctx -> profile = ff_h264_get_profile ( & h -> sps ) ; h -> avctx -> level = h -> sps . level_idc ; h -> avctx -> refs = h -> sps . ref_frame_count ; must_reinit = ( h -> context_initialized && ( 16 * h -> sps . mb_width != h -> avctx -> coded_width || 16 * h -> sps . mb_height * ( 2 - h -> sps . frame_mbs_only_flag ) != h -> avctx -> coded_height || h -> avctx -> bits_per_raw_sample != h -> sps . bit_depth_luma || h -> cur_chroma_format_idc != h -> sps . chroma_format_idc || av_cmp_q ( h -> sps . sar , h -> avctx -> sample_aspect_ratio ) || h -> mb_width != h -> sps . mb_width || h -> mb_height != h -> sps . mb_height * ( 2 - h -> sps . frame_mbs_only_flag ) ) ) ; if ( h0 -> avctx -> pix_fmt != get_pixel_format ( h0 , 0 ) ) must_reinit = 1 ; h -> mb_width = h -> sps . mb_width ; h -> mb_height = h -> sps . mb_height * ( 2 - h -> sps . frame_mbs_only_flag ) ; h -> mb_num = h -> mb_width * h -> mb_height ; h -> mb_stride = h -> mb_width + 1 ; h -> b_stride = h -> mb_width * 4 ; h -> chroma_y_shift = h -> sps . chroma_format_idc <= 1 ; h -> width = 16 * h -> mb_width ; h -> height = 16 * h -> mb_height ; ret = init_dimensions ( h ) ; if ( ret < 0 ) return ret ; if ( h -> sps . video_signal_type_present_flag ) { h -> avctx -> color_range = h -> sps . full_range > 0 ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG ; if ( h -> sps . colour_description_present_flag ) { if ( h -> avctx -> colorspace != h -> sps . colorspace ) needs_reinit = 1 ; h -> avctx -> color_primaries = h -> sps . color_primaries ; h -> avctx -> color_trc = h -> sps . color_trc ; h -> avctx -> colorspace = h -> sps . colorspace ; } } if ( h -> context_initialized && ( h -> width != h -> avctx -> coded_width || h -> height != h -> avctx -> coded_height || must_reinit || needs_reinit ) ) { if ( h != h0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"changing<S2SV_blank>width/height<S2SV_blank>on<S2SV_blank>\" \"slice<S2SV_blank>%d\\\\n\" , h0 -> current_slice + 1 ) ; return AVERROR_INVALIDDATA ; } flush_change ( h ) ; if ( ( ret = get_pixel_format ( h , 1 ) ) < 0 ) return ret ; h -> avctx -> pix_fmt = ret ; av_log ( h -> avctx , AV_LOG_INFO , \"Reinit<S2SV_blank>context<S2SV_blank>to<S2SV_blank>%dx%d,<S2SV_blank>\" \"pix_fmt:<S2SV_blank>%s\\\\n\" , h -> width , h -> height , av_get_pix_fmt_name ( h -> avctx -> pix_fmt ) ) ; if ( ( ret = h264_slice_header_init ( h , 1 ) ) < 0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"h264_slice_header_init()<S2SV_blank>failed\\\\n\" ) ; return ret ; } } if ( ! h -> context_initialized ) { if ( h != h0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"Cannot<S2SV_blank>(re-)initialize<S2SV_blank>context<S2SV_blank>during<S2SV_blank>parallel<S2SV_blank>decoding.\\\\n\" ) ; return AVERROR_PATCHWELCOME ; } if ( ( ret = get_pixel_format ( h , 1 ) ) < 0 ) return ret ; h -> avctx -> pix_fmt = ret ; if ( ( ret = h264_slice_header_init ( h , 0 ) ) < 0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"h264_slice_header_init()<S2SV_blank>failed\\\\n\" ) ; return ret ; } } if ( h == h0 && h -> dequant_coeff_pps != pps_id ) { h -> dequant_coeff_pps = pps_id ; init_dequant_tables ( h ) ; } h -> frame_num = get_bits ( & h -> gb , h -> sps . log2_max_frame_num ) ; h -> mb_mbaff = 0 ; h -> mb_aff_frame = 0 ; last_pic_structure = h0 -> picture_structure ; last_pic_droppable = h0 -> droppable ; h -> droppable = h -> nal_ref_idc == 0 ; if ( h -> sps . frame_mbs_only_flag ) { h -> picture_structure = PICT_FRAME ; } else { if ( ! h -> sps . direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B ) { av_log ( h -> avctx , AV_LOG_ERROR , \"This<S2SV_blank>stream<S2SV_blank>was<S2SV_blank>generated<S2SV_blank>by<S2SV_blank>a<S2SV_blank>broken<S2SV_blank>encoder,<S2SV_blank>invalid<S2SV_blank>8x8<S2SV_blank>inference\\\\n\" ) ; return - 1 ; } field_pic_flag = get_bits1 ( & h -> gb ) ; if ( field_pic_flag ) { bottom_field_flag = get_bits1 ( & h -> gb ) ; h -> picture_structure = PICT_TOP_FIELD + bottom_field_flag ; } else { h -> picture_structure = PICT_FRAME ; h -> mb_aff_frame = h -> sps . mb_aff ; } } h -> mb_field_decoding_flag = h -> picture_structure != PICT_FRAME ; if ( h0 -> current_slice != 0 ) { if ( last_pic_structure != h -> picture_structure || last_pic_droppable != h -> droppable ) { av_log ( h -> avctx , AV_LOG_ERROR , \"Changing<S2SV_blank>field<S2SV_blank>mode<S2SV_blank>(%d<S2SV_blank>-><S2SV_blank>%d)<S2SV_blank>between<S2SV_blank>slices<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed\\\\n\" , last_pic_structure , h -> picture_structure ) ; h -> picture_structure = last_pic_structure ; h -> droppable = last_pic_droppable ; return AVERROR_INVALIDDATA ; } else if ( ! h0 -> cur_pic_ptr ) { av_log ( h -> avctx , AV_LOG_ERROR , \"unset<S2SV_blank>cur_pic_ptr<S2SV_blank>on<S2SV_blank>%d.<S2SV_blank>slice\\\\n\" , h0 -> current_slice + 1 ) ; return AVERROR_INVALIDDATA ; } } else { if ( h -> frame_num != h -> prev_frame_num && h -> prev_frame_num >= 0 ) { int unwrap_prev_frame_num = h -> prev_frame_num ; int max_frame_num = 1 << h -> sps . log2_max_frame_num ; if ( unwrap_prev_frame_num > h -> frame_num ) unwrap_prev_frame_num -= max_frame_num ; if ( ( h -> frame_num - unwrap_prev_frame_num ) > h -> sps . ref_frame_count ) { unwrap_prev_frame_num = ( h -> frame_num - h -> sps . ref_frame_count ) - 1 ; if ( unwrap_prev_frame_num < 0 ) unwrap_prev_frame_num += max_frame_num ; h -> prev_frame_num = unwrap_prev_frame_num ; } } if ( h0 -> first_field ) { assert ( h0 -> cur_pic_ptr ) ; assert ( h0 -> cur_pic_ptr -> f . data [ 0 ] ) ; assert ( h0 -> cur_pic_ptr -> reference != DELAYED_PIC_REF ) ; <S2SV_StartBug> if ( ! last_pic_droppable && h0 -> cur_pic_ptr -> tf . owner == h0 -> avctx ) { <S2SV_EndBug> ff_thread_report_progress ( & h0 -> cur_pic_ptr -> tf , INT_MAX , last_pic_structure == PICT_BOTTOM_FIELD ) ; } if ( ! FIELD_PICTURE ( h ) || h -> picture_structure == last_pic_structure ) { <S2SV_StartBug> if ( ! last_pic_droppable && last_pic_structure != PICT_FRAME ) { <S2SV_EndBug> ff_thread_report_progress ( & h0 -> cur_pic_ptr -> tf , INT_MAX , last_pic_structure == PICT_TOP_FIELD ) ; } } else { if ( h0 -> cur_pic_ptr -> frame_num != h -> frame_num ) { <S2SV_StartBug> if ( ! last_pic_droppable && last_pic_structure != PICT_FRAME ) { <S2SV_EndBug> ff_thread_report_progress ( & h0 -> cur_pic_ptr -> tf , INT_MAX , last_pic_structure == PICT_TOP_FIELD ) ; } } else { if ( ! ( ( last_pic_structure == PICT_TOP_FIELD && h -> picture_structure == PICT_BOTTOM_FIELD ) || ( last_pic_structure == PICT_BOTTOM_FIELD && h -> picture_structure == PICT_TOP_FIELD ) ) ) { av_log ( h -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>field<S2SV_blank>mode<S2SV_blank>combination<S2SV_blank>%d/%d\\\\n\" , last_pic_structure , h -> picture_structure ) ; h -> picture_structure = last_pic_structure ; h -> droppable = last_pic_droppable ; return AVERROR_INVALIDDATA ; } else if ( last_pic_droppable != h -> droppable ) { avpriv_request_sample ( h -> avctx , \"Found<S2SV_blank>reference<S2SV_blank>and<S2SV_blank>non-reference<S2SV_blank>fields<S2SV_blank>in<S2SV_blank>the<S2SV_blank>same<S2SV_blank>frame,<S2SV_blank>which\" ) ; h -> picture_structure = last_pic_structure ; h -> droppable = last_pic_droppable ; return AVERROR_PATCHWELCOME ; } } } } while ( h -> frame_num != h -> prev_frame_num && h -> prev_frame_num >= 0 && ! h0 -> first_field && h -> frame_num != ( h -> prev_frame_num + 1 ) % ( 1 << h -> sps . log2_max_frame_num ) ) { Picture * prev = h -> short_ref_count ? h -> short_ref [ 0 ] : NULL ; av_log ( h -> avctx , AV_LOG_DEBUG , \"Frame<S2SV_blank>num<S2SV_blank>gap<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , h -> frame_num , h -> prev_frame_num ) ; if ( ! h -> sps . gaps_in_frame_num_allowed_flag ) for ( i = 0 ; i < FF_ARRAY_ELEMS ( h -> last_pocs ) ; i ++ ) h -> last_pocs [ i ] = INT_MIN ; ret = h264_frame_start ( h ) ; if ( ret < 0 ) return ret ; h -> prev_frame_num ++ ; h -> prev_frame_num %= 1 << h -> sps . log2_max_frame_num ; h -> cur_pic_ptr -> frame_num = h -> prev_frame_num ; ff_thread_report_progress ( & h -> cur_pic_ptr -> tf , INT_MAX , 0 ) ; ff_thread_report_progress ( & h -> cur_pic_ptr -> tf , INT_MAX , 1 ) ; ret = ff_generate_sliding_window_mmcos ( h , 1 ) ; if ( ret < 0 && ( h -> avctx -> err_recognition & AV_EF_EXPLODE ) ) return ret ; ret = ff_h264_execute_ref_pic_marking ( h , h -> mmco , h -> mmco_index ) ; if ( ret < 0 && ( h -> avctx -> err_recognition & AV_EF_EXPLODE ) ) return ret ; if ( h -> short_ref_count ) { if ( prev ) { av_image_copy ( h -> short_ref [ 0 ] -> f . data , h -> short_ref [ 0 ] -> f . linesize , ( const uint8_t * * ) prev -> f . data , prev -> f . linesize , h -> avctx -> pix_fmt , h -> mb_width * 16 , h -> mb_height * 16 ) ; h -> short_ref [ 0 ] -> poc = prev -> poc + 2 ; } h -> short_ref [ 0 ] -> frame_num = h -> prev_frame_num ; } } if ( h0 -> first_field ) { assert ( h0 -> cur_pic_ptr ) ; assert ( h0 -> cur_pic_ptr -> f . data [ 0 ] ) ; assert ( h0 -> cur_pic_ptr -> reference != DELAYED_PIC_REF ) ; if ( ! FIELD_PICTURE ( h ) || h -> picture_structure == last_pic_structure ) { h0 -> cur_pic_ptr = NULL ; h0 -> first_field = FIELD_PICTURE ( h ) ; } else { if ( h0 -> cur_pic_ptr -> frame_num != h -> frame_num ) { ff_thread_report_progress ( & h0 -> cur_pic_ptr -> tf , INT_MAX , h0 -> picture_structure == PICT_BOTTOM_FIELD ) ; h0 -> first_field = 1 ; h0 -> cur_pic_ptr = NULL ; } else { h0 -> first_field = 0 ; } } } else { h0 -> first_field = FIELD_PICTURE ( h ) ; } if ( ! FIELD_PICTURE ( h ) || h0 -> first_field ) { if ( h264_frame_start ( h ) < 0 ) { h0 -> first_field = 0 ; return AVERROR_INVALIDDATA ; } } else { release_unused_pictures ( h , 0 ) ; } if ( FIELD_PICTURE ( h ) ) { for ( i = ( h -> picture_structure == PICT_BOTTOM_FIELD ) ; i < h -> mb_height ; i ++ ) memset ( h -> slice_table + i * h -> mb_stride , - 1 , ( h -> mb_stride - ( i + 1 == h -> mb_height ) ) * sizeof ( * h -> slice_table ) ) ; } else { memset ( h -> slice_table , - 1 , ( h -> mb_height * h -> mb_stride - 1 ) * sizeof ( * h -> slice_table ) ) ; } h0 -> last_slice_type = - 1 ; } if ( h != h0 && ( ret = clone_slice ( h , h0 ) ) < 0 ) return ret ; for ( i = 0 ; i < h -> slice_context_count ; i ++ ) if ( h -> thread_context [ i ] ) { ret = alloc_scratch_buffers ( h -> thread_context [ i ] , h -> linesize ) ; if ( ret < 0 ) return ret ; } h -> cur_pic_ptr -> frame_num = h -> frame_num ; av_assert1 ( h -> mb_num == h -> mb_width * h -> mb_height ) ; if ( first_mb_in_slice << FIELD_OR_MBAFF_PICTURE ( h ) >= h -> mb_num || first_mb_in_slice >= h -> mb_num ) { av_log ( h -> avctx , AV_LOG_ERROR , \"first_mb_in_slice<S2SV_blank>overflow\\\\n\" ) ; return AVERROR_INVALIDDATA ; } h -> resync_mb_x = h -> mb_x = first_mb_in_slice % h -> mb_width ; h -> resync_mb_y = h -> mb_y = ( first_mb_in_slice / h -> mb_width ) << FIELD_OR_MBAFF_PICTURE ( h ) ; if ( h -> picture_structure == PICT_BOTTOM_FIELD ) h -> resync_mb_y = h -> mb_y = h -> mb_y + 1 ; av_assert1 ( h -> mb_y < h -> mb_height ) ; if ( h -> picture_structure == PICT_FRAME ) { h -> curr_pic_num = h -> frame_num ; h -> max_pic_num = 1 << h -> sps . log2_max_frame_num ; } else { h -> curr_pic_num = 2 * h -> frame_num + 1 ; h -> max_pic_num = 1 << ( h -> sps . log2_max_frame_num + 1 ) ; } if ( h -> nal_unit_type == NAL_IDR_SLICE ) get_ue_golomb ( & h -> gb ) ; if ( h -> sps . poc_type == 0 ) { h -> poc_lsb = get_bits ( & h -> gb , h -> sps . log2_max_poc_lsb ) ; if ( h -> pps . pic_order_present == 1 && h -> picture_structure == PICT_FRAME ) h -> delta_poc_bottom = get_se_golomb ( & h -> gb ) ; } if ( h -> sps . poc_type == 1 && ! h -> sps . delta_pic_order_always_zero_flag ) { h -> delta_poc [ 0 ] = get_se_golomb ( & h -> gb ) ; if ( h -> pps . pic_order_present == 1 && h -> picture_structure == PICT_FRAME ) h -> delta_poc [ 1 ] = get_se_golomb ( & h -> gb ) ; } ff_init_poc ( h , h -> cur_pic_ptr -> field_poc , & h -> cur_pic_ptr -> poc ) ; if ( h -> pps . redundant_pic_cnt_present ) h -> redundant_pic_count = get_ue_golomb ( & h -> gb ) ; ret = ff_set_ref_count ( h ) ; if ( ret < 0 ) return ret ; if ( slice_type != AV_PICTURE_TYPE_I && ( h0 -> current_slice == 0 || slice_type != h0 -> last_slice_type || memcmp ( h0 -> last_ref_count , h0 -> ref_count , sizeof ( h0 -> ref_count ) ) ) ) { ff_h264_fill_default_ref_list ( h ) ; } if ( h -> slice_type_nos != AV_PICTURE_TYPE_I ) { ret = ff_h264_decode_ref_pic_list_reordering ( h ) ; if ( ret < 0 ) { h -> ref_count [ 1 ] = h -> ref_count [ 0 ] = 0 ; return ret ; } } if ( ( h -> pps . weighted_pred && h -> slice_type_nos == AV_PICTURE_TYPE_P ) || ( h -> pps . weighted_bipred_idc == 1 && h -> slice_type_nos == AV_PICTURE_TYPE_B ) ) ff_pred_weight_table ( h ) ; else if ( h -> pps . weighted_bipred_idc == 2 && h -> slice_type_nos == AV_PICTURE_TYPE_B ) { implicit_weight_table ( h , - 1 ) ; } else { h -> use_weight = 0 ; for ( i = 0 ; i < 2 ; i ++ ) { h -> luma_weight_flag [ i ] = 0 ; h -> chroma_weight_flag [ i ] = 0 ; } } if ( h -> nal_ref_idc ) { ret = ff_h264_decode_ref_pic_marking ( h0 , & h -> gb , ! ( h -> avctx -> active_thread_type & FF_THREAD_FRAME ) || h0 -> current_slice == 0 ) ; if ( ret < 0 && ( h -> avctx -> err_recognition & AV_EF_EXPLODE ) ) return AVERROR_INVALIDDATA ; } if ( FRAME_MBAFF ( h ) ) { ff_h264_fill_mbaff_ref_list ( h ) ; if ( h -> pps . weighted_bipred_idc == 2 && h -> slice_type_nos == AV_PICTURE_TYPE_B ) { implicit_weight_table ( h , 0 ) ; implicit_weight_table ( h , 1 ) ; } } if ( h -> slice_type_nos == AV_PICTURE_TYPE_B && ! h -> direct_spatial_mv_pred ) ff_h264_direct_dist_scale_factor ( h ) ; ff_h264_direct_ref_list_init ( h ) ; if ( h -> slice_type_nos != AV_PICTURE_TYPE_I && h -> pps . cabac ) { tmp = get_ue_golomb_31 ( & h -> gb ) ; if ( tmp > 2 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"cabac_init_idc<S2SV_blank>overflow\\\\n\" ) ; return AVERROR_INVALIDDATA ; } h -> cabac_init_idc = tmp ; } h -> last_qscale_diff = 0 ; tmp = h -> pps . init_qp + get_se_golomb ( & h -> gb ) ; if ( tmp > 51 + 6 * ( h -> sps . bit_depth_luma - 8 ) ) { av_log ( h -> avctx , AV_LOG_ERROR , \"QP<S2SV_blank>%u<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , tmp ) ; return AVERROR_INVALIDDATA ; } h -> qscale = tmp ; h -> chroma_qp [ 0 ] = get_chroma_qp ( h , 0 , h -> qscale ) ; h -> chroma_qp [ 1 ] = get_chroma_qp ( h , 1 , h -> qscale ) ; if ( h -> slice_type == AV_PICTURE_TYPE_SP ) get_bits1 ( & h -> gb ) ; if ( h -> slice_type == AV_PICTURE_TYPE_SP || h -> slice_type == AV_PICTURE_TYPE_SI ) get_se_golomb ( & h -> gb ) ; h -> deblocking_filter = 1 ; h -> slice_alpha_c0_offset = 52 ; h -> slice_beta_offset = 52 ; if ( h -> pps . deblocking_filter_parameters_present ) { tmp = get_ue_golomb_31 ( & h -> gb ) ; if ( tmp > 2 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"deblocking_filter_idc<S2SV_blank>%u<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , tmp ) ; return AVERROR_INVALIDDATA ; } h -> deblocking_filter = tmp ; if ( h -> deblocking_filter < 2 ) h -> deblocking_filter ^= 1 ; if ( h -> deblocking_filter ) { h -> slice_alpha_c0_offset += get_se_golomb ( & h -> gb ) << 1 ; h -> slice_beta_offset += get_se_golomb ( & h -> gb ) << 1 ; if ( h -> slice_alpha_c0_offset > 104U || h -> slice_beta_offset > 104U ) { av_log ( h -> avctx , AV_LOG_ERROR , \"deblocking<S2SV_blank>filter<S2SV_blank>parameters<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , h -> slice_alpha_c0_offset , h -> slice_beta_offset ) ; return AVERROR_INVALIDDATA ; } } } if ( h -> avctx -> skip_loop_filter >= AVDISCARD_ALL || ( h -> avctx -> skip_loop_filter >= AVDISCARD_NONKEY && h -> slice_type_nos != AV_PICTURE_TYPE_I ) || ( h -> avctx -> skip_loop_filter >= AVDISCARD_BIDIR && h -> slice_type_nos == AV_PICTURE_TYPE_B ) || ( h -> avctx -> skip_loop_filter >= AVDISCARD_NONREF && h -> nal_ref_idc == 0 ) ) h -> deblocking_filter = 0 ; if ( h -> deblocking_filter == 1 && h0 -> max_contexts > 1 ) { if ( h -> avctx -> flags2 & CODEC_FLAG2_FAST ) { h -> deblocking_filter = 2 ; } else { h0 -> max_contexts = 1 ; if ( ! h0 -> single_decode_warning ) { av_log ( h -> avctx , AV_LOG_INFO , \"Cannot<S2SV_blank>parallelize<S2SV_blank>deblocking<S2SV_blank>type<S2SV_blank>1,<S2SV_blank>decoding<S2SV_blank>such<S2SV_blank>frames<S2SV_blank>in<S2SV_blank>sequential<S2SV_blank>order\\\\n\" ) ; h0 -> single_decode_warning = 1 ; } if ( h != h0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"Deblocking<S2SV_blank>switched<S2SV_blank>inside<S2SV_blank>frame.\\\\n\" ) ; return 1 ; } } } h -> qp_thresh = 15 + 52 - FFMIN ( h -> slice_alpha_c0_offset , h -> slice_beta_offset ) - FFMAX3 ( 0 , h -> pps . chroma_qp_index_offset [ 0 ] , h -> pps . chroma_qp_index_offset [ 1 ] ) + 6 * ( h -> sps . bit_depth_luma - 8 ) ; h0 -> last_slice_type = slice_type ; memcpy ( h0 -> last_ref_count , h0 -> ref_count , sizeof ( h0 -> last_ref_count ) ) ; h -> slice_num = ++ h0 -> current_slice ; if ( h -> slice_num ) h0 -> slice_row [ ( h -> slice_num - 1 ) & ( MAX_SLICES - 1 ) ] = h -> resync_mb_y ; if ( h0 -> slice_row [ h -> slice_num & ( MAX_SLICES - 1 ) ] + 3 >= h -> resync_mb_y && h0 -> slice_row [ h -> slice_num & ( MAX_SLICES - 1 ) ] <= h -> resync_mb_y && h -> slice_num >= MAX_SLICES ) { av_log ( h -> avctx , AV_LOG_WARNING , \"Possibly<S2SV_blank>too<S2SV_blank>many<S2SV_blank>slices<S2SV_blank>(%d<S2SV_blank>>=<S2SV_blank>%d),<S2SV_blank>increase<S2SV_blank>MAX_SLICES<S2SV_blank>and<S2SV_blank>recompile<S2SV_blank>if<S2SV_blank>there<S2SV_blank>are<S2SV_blank>artifacts\\\\n\" , h -> slice_num , MAX_SLICES ) ; } for ( j = 0 ; j < 2 ; j ++ ) { int id_list [ 16 ] ; int * ref2frm = h -> ref2frm [ h -> slice_num & ( MAX_SLICES - 1 ) ] [ j ] ; for ( i = 0 ; i < 16 ; i ++ ) { id_list [ i ] = 60 ; if ( j < h -> list_count && i < h -> ref_count [ j ] && h -> ref_list [ j ] [ i ] . f . buf [ 0 ] ) { int k ; AVBuffer * buf = h -> ref_list [ j ] [ i ] . f . buf [ 0 ] -> buffer ; for ( k = 0 ; k < h -> short_ref_count ; k ++ ) if ( h -> short_ref [ k ] -> f . buf [ 0 ] -> buffer == buf ) { id_list [ i ] = k ; break ; } for ( k = 0 ; k < h -> long_ref_count ; k ++ ) if ( h -> long_ref [ k ] && h -> long_ref [ k ] -> f . buf [ 0 ] -> buffer == buf ) { id_list [ i ] = h -> short_ref_count + k ; break ; } } } ref2frm [ 0 ] = ref2frm [ 1 ] = - 1 ; for ( i = 0 ; i < 16 ; i ++ ) ref2frm [ i + 2 ] = 4 * id_list [ i ] + ( h -> ref_list [ j ] [ i ] . reference & 3 ) ; ref2frm [ 18 + 0 ] = ref2frm [ 18 + 1 ] = - 1 ; for ( i = 16 ; i < 48 ; i ++ ) ref2frm [ i + 4 ] = 4 * id_list [ ( i - 16 ) >> 1 ] + ( h -> ref_list [ j ] [ i ] . reference & 3 ) ; } if ( h -> ref_count [ 0 ] ) h -> er . last_pic = & h -> ref_list [ 0 ] [ 0 ] ; if ( h -> ref_count [ 1 ] ) h -> er . next_pic = & h -> ref_list [ 1 ] [ 0 ] ; h -> er . ref_count = h -> ref_count [ 0 ] ; if ( h -> avctx -> debug & FF_DEBUG_PICT_INFO ) { av_log ( h -> avctx , AV_LOG_DEBUG , \"slice:%d<S2SV_blank>%s<S2SV_blank>mb:%d<S2SV_blank>%c%s%s<S2SV_blank>pps:%u<S2SV_blank>frame:%d<S2SV_blank>poc:%d/%d<S2SV_blank>ref:%d/%d<S2SV_blank>qp:%d<S2SV_blank>loop:%d:%d:%d<S2SV_blank>weight:%d%s<S2SV_blank>%s\\\\n\" , h -> slice_num , ( h -> picture_structure == PICT_FRAME ? \"F\" : h -> picture_structure == PICT_TOP_FIELD ? \"T\" : \"B\" ) , first_mb_in_slice , av_get_picture_type_char ( h -> slice_type ) , h -> slice_type_fixed ? \"<S2SV_blank>fix\" : \"\" , h -> nal_unit_type == NAL_IDR_SLICE ? \"<S2SV_blank>IDR\" : \"\" , pps_id , h -> frame_num , h -> cur_pic_ptr -> field_poc [ 0 ] , h -> cur_pic_ptr -> field_poc [ 1 ] , h -> ref_count [ 0 ] , h -> ref_count [ 1 ] , h -> qscale , h -> deblocking_filter , h -> slice_alpha_c0_offset / 2 - 26 , h -> slice_beta_offset / 2 - 26 , h -> use_weight , h -> use_weight == 1 && h -> use_weight_chroma ? \"c\" : \"\" , h -> slice_type == AV_PICTURE_TYPE_B ? ( h -> direct_spatial_mv_pred ? \"SPAT\" : \"TEMP\" ) : \"\" ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> h0 -> cur_pic_ptr <S2SV_ModStart> { if ( <S2SV_ModEnd> last_pic_structure != PICT_FRAME <S2SV_ModStart> { if ( <S2SV_ModEnd> last_pic_structure != PICT_FRAME\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void fillrd ( struct postproc_state * state , int q , int a ) { char char_dist [ 300 ] ; double sigma ; int i ; vp8_clear_system_state ( ) ; sigma = a + .5 + .6 * ( 63 - q ) / 63.0 ; { int next , j ; next = 0 ; for ( i = - 32 ; i < 32 ; i ++ ) { <S2SV_StartBug> const int v = ( int ) ( .5 + 256 * vp8_gaussian ( sigma , 0 , i ) ) ; <S2SV_EndBug> if ( v ) { for ( j = 0 ; j < v ; j ++ ) { char_dist [ next + j ] = ( char ) i ; } next = next + j ; } } for ( ; next < 256 ; next ++ ) char_dist [ next ] = 0 ; } for ( i = 0 ; i < 3072 ; i ++ ) { state -> noise [ i ] = char_dist [ rand ( ) & 0xff ] ; } for ( i = 0 ; i < 16 ; i ++ ) { state -> blackclamp [ i ] = - char_dist [ 0 ] ; state -> whiteclamp [ i ] = - char_dist [ 0 ] ; state -> bothclamp [ i ] = - 2 * char_dist [ 0 ] ; } state -> last_q = q ; state -> last_noise = a ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 256 * gaussian <S2SV_ModEnd> ( sigma ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10270\n\n```\nCWE-125 static void ChopUpSingleUncompressedStrip ( TIFF * tif ) { register TIFFDirectory * td = & tif -> tif_dir ; uint64 bytecount ; uint64 offset ; uint32 rowblock ; uint64 rowblockbytes ; uint64 stripbytes ; uint32 strip ; <S2SV_StartBug> uint64 nstrips64 ; <S2SV_EndBug> uint32 nstrips32 ; uint32 rowsperstrip ; uint64 * newcounts ; uint64 * newoffsets ; bytecount = td -> td_stripbytecount [ 0 ] ; offset = td -> td_stripoffset [ 0 ] ; assert ( td -> td_planarconfig == PLANARCONFIG_CONTIG ) ; if ( ( td -> td_photometric == PHOTOMETRIC_YCBCR ) && ( ! isUpSampled ( tif ) ) ) rowblock = td -> td_ycbcrsubsampling [ 1 ] ; else rowblock = 1 ; rowblockbytes = TIFFVTileSize64 ( tif , rowblock ) ; if ( rowblockbytes > STRIP_SIZE_DEFAULT ) { stripbytes = rowblockbytes ; rowsperstrip = rowblock ; } else if ( rowblockbytes > 0 ) { uint32 rowblocksperstrip ; rowblocksperstrip = ( uint32 ) ( STRIP_SIZE_DEFAULT / rowblockbytes ) ; rowsperstrip = rowblocksperstrip * rowblock ; stripbytes = rowblocksperstrip * rowblockbytes ; } else return ; if ( rowsperstrip >= td -> td_rowsperstrip ) return ; <S2SV_StartBug> nstrips64 = TIFFhowmany_64 ( bytecount , stripbytes ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( nstrips64 == 0 ) || ( nstrips64 > 0xFFFFFFFF ) ) <S2SV_EndBug> return ; nstrips32 = ( uint32 ) nstrips64 ; <S2SV_StartBug> newcounts = ( uint64 * ) _TIFFCheckMalloc ( tif , nstrips32 , sizeof ( uint64 ) , <S2SV_EndBug> \"for<S2SV_blank>chopped<S2SV_blank>\\\\\"StripByteCounts\\\\\"<S2SV_blank>array\" ) ; <S2SV_StartBug> newoffsets = ( uint64 * ) _TIFFCheckMalloc ( tif , nstrips32 , sizeof ( uint64 ) , <S2SV_EndBug> \"for<S2SV_blank>chopped<S2SV_blank>\\\\\"StripOffsets\\\\\"<S2SV_blank>array\" ) ; if ( newcounts == NULL || newoffsets == NULL ) { if ( newcounts != NULL ) _TIFFfree ( newcounts ) ; if ( newoffsets != NULL ) _TIFFfree ( newoffsets ) ; return ; } <S2SV_StartBug> for ( strip = 0 ; strip < nstrips32 ; strip ++ ) { <S2SV_EndBug> if ( stripbytes > bytecount ) stripbytes = bytecount ; newcounts [ strip ] = stripbytes ; <S2SV_StartBug> newoffsets [ strip ] = offset ; <S2SV_EndBug> offset += stripbytes ; bytecount -= stripbytes ; } <S2SV_StartBug> td -> td_stripsperimage = td -> td_nstrips = nstrips32 ; <S2SV_EndBug> TIFFSetField ( tif , TIFFTAG_ROWSPERSTRIP , rowsperstrip ) ; _TIFFfree ( td -> td_stripbytecount ) ; _TIFFfree ( td -> td_stripoffset ) ; td -> td_stripbytecount = newcounts ; td -> td_stripoffset = newoffsets ; td -> td_stripbytecountsorted = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32 strip ; uint32 nstrips <S2SV_ModEnd> ; uint32 rowsperstrip <S2SV_ModStart> ) return ; nstrips = TIFFhowmany_32 ( td -> td_imagelength , rowsperstrip ) ; if ( nstrips <S2SV_ModEnd> == 0 ) <S2SV_ModStart> == 0 ) return ; <S2SV_ModEnd> newcounts = ( <S2SV_ModStart> ( tif , nstrips <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> ( tif , nstrips <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> ; strip < nstrips <S2SV_ModEnd> ; strip ++ <S2SV_ModStart> strip ] = stripbytes ? offset : 0 <S2SV_ModEnd> ; offset += <S2SV_ModStart> -> td_nstrips = nstrips <S2SV_ModEnd> ; TIFFSetField (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8012\n\n```\nCWE-617 struct lldpd_mgmt * lldpd_alloc_mgmt ( int family , void * addrptr , size_t addrsize , u_int32_t iface ) { struct lldpd_mgmt * mgmt ; log_debug ( \"alloc\" , \"allocate<S2SV_blank>a<S2SV_blank>new<S2SV_blank>management<S2SV_blank>address<S2SV_blank>(family:<S2SV_blank>%d)\" , family ) ; if ( family <= LLDPD_AF_UNSPEC || family >= LLDPD_AF_LAST ) { errno = EAFNOSUPPORT ; return NULL ; } if ( addrsize > LLDPD_MGMT_MAXADDRSIZE ) { errno = EOVERFLOW ; return NULL ; } mgmt = calloc ( 1 , sizeof ( struct lldpd_mgmt ) ) ; if ( mgmt == NULL ) { errno = ENOMEM ; return NULL ; } mgmt -> m_family = family ; <S2SV_StartBug> assert ( addrsize <= LLDPD_MGMT_MAXADDRSIZE ) ; <S2SV_EndBug> memcpy ( & mgmt -> m_addr , addrptr , addrsize ) ; mgmt -> m_addrsize = addrsize ; mgmt -> m_iface = iface ; return mgmt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = family ; <S2SV_ModEnd> memcpy ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9906\n\n```\nCWE-416 static int my_login ( pTHX_ SV * dbh , imp_dbh_t * imp_dbh ) { SV * sv ; HV * hv ; char * dbname ; char * host ; char * port ; char * user ; char * password ; char * mysql_socket ; <S2SV_StartBug> int result ; <S2SV_EndBug> D_imp_xxh ( dbh ) ; # define TAKE_IMP_DATA_VERSION 1 # if TAKE_IMP_DATA_VERSION if ( DBIc_has ( imp_dbh , DBIcf_IMPSET ) ) { if ( DBIc_has ( imp_dbh , DBIcf_ACTIVE ) ) { if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"my_login<S2SV_blank>skip<S2SV_blank>connect\\\\n\" ) ; ++ DBIc_ACTIVE_KIDS ( DBIc_PARENT_COM ( imp_dbh ) ) ; return TRUE ; } if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"my_login<S2SV_blank>IMPSET<S2SV_blank>but<S2SV_blank>not<S2SV_blank>ACTIVE<S2SV_blank>so<S2SV_blank>connect<S2SV_blank>not<S2SV_blank>skipped\\\\n\" ) ; } # endif sv = DBIc_IMP_DATA ( imp_dbh ) ; if ( ! sv || ! SvROK ( sv ) ) return FALSE ; hv = ( HV * ) SvRV ( sv ) ; if ( SvTYPE ( hv ) != SVt_PVHV ) return FALSE ; host = safe_hv_fetch ( aTHX_ hv , \"host\" , 4 ) ; port = safe_hv_fetch ( aTHX_ hv , \"port\" , 4 ) ; user = safe_hv_fetch ( aTHX_ hv , \"user\" , 4 ) ; password = safe_hv_fetch ( aTHX_ hv , \"password\" , 8 ) ; dbname = safe_hv_fetch ( aTHX_ hv , \"database\" , 8 ) ; mysql_socket = safe_hv_fetch ( aTHX_ hv , \"mysql_socket\" , 12 ) ; if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"imp_dbh->my_login<S2SV_blank>:<S2SV_blank>dbname<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>uid<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>pwd<S2SV_blank>=<S2SV_blank>%s,\" \"host<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>port<S2SV_blank>=<S2SV_blank>%s\\\\n\" , dbname ? dbname : \"NULL\" , user ? user : \"NULL\" , password ? password : \"NULL\" , host ? host : \"NULL\" , port ? port : \"NULL\" ) ; if ( ! imp_dbh -> pmysql ) { <S2SV_StartBug> Newz ( 908 , imp_dbh -> pmysql , 1 , MYSQL ) ; <S2SV_EndBug> } result = mysql_dr_connect ( dbh , imp_dbh -> pmysql , mysql_socket , host , port , user , password , dbname , imp_dbh ) ? TRUE : FALSE ; <S2SV_StartBug> if ( ! result ) <S2SV_EndBug> <S2SV_StartBug> Safefree ( imp_dbh -> pmysql ) ; <S2SV_EndBug> return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int result ; int fresh = 0 <S2SV_ModStart> pmysql ) { fresh = 1 ; <S2SV_ModStart> ; if ( fresh && <S2SV_ModStart> ! result ) { do_error ( dbh , mysql_errno ( imp_dbh -> pmysql ) , mysql_error ( imp_dbh -> pmysql ) , mysql_sqlstate ( imp_dbh -> pmysql ) ) ; <S2SV_ModStart> pmysql ) ; imp_dbh -> pmysql = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 GF_Err cat_multiple_files ( GF_ISOFile * dest , char * fileName , u32 import_flags , Double force_fps , u32 frames_per_sample , char * tmp_dir , Bool force_cat , Bool align_timelines , Bool allow_add_in_command ) { CATEnum cat_enum ; char * sep ; cat_enum . dest = dest ; cat_enum . import_flags = import_flags ; cat_enum . force_fps = force_fps ; cat_enum . frames_per_sample = frames_per_sample ; cat_enum . tmp_dir = tmp_dir ; cat_enum . force_cat = force_cat ; cat_enum . align_timelines = align_timelines ; cat_enum . allow_add_in_command = allow_add_in_command ; <S2SV_StartBug> strcpy ( cat_enum . szPath , fileName ) ; <S2SV_EndBug> sep = strrchr ( cat_enum . szPath , GF_PATH_SEPARATOR ) ; if ( ! sep ) sep = strrchr ( cat_enum . szPath , '/' ) ; if ( ! sep ) { strcpy ( cat_enum . szPath , \".\" ) ; <S2SV_StartBug> strcpy ( cat_enum . szRad1 , fileName ) ; <S2SV_EndBug> } else { <S2SV_StartBug> strcpy ( cat_enum . szRad1 , sep + 1 ) ; <S2SV_EndBug> sep [ 0 ] = 0 ; } <S2SV_StartBug> sep = strchr ( cat_enum . szRad1 , '*' ) ; <S2SV_EndBug> <S2SV_StartBug> strcpy ( cat_enum . szRad2 , sep + 1 ) ; <S2SV_EndBug> sep [ 0 ] = 0 ; <S2SV_StartBug> sep = strchr ( cat_enum . szRad2 , '%' ) ; <S2SV_EndBug> if ( ! sep ) sep = strchr ( cat_enum . szRad2 , '#' ) ; if ( ! sep ) sep = strchr ( cat_enum . szRad2 , ':' ) ; strcpy ( cat_enum . szOpt , \"\" ) ; <S2SV_StartBug> if ( sep ) { <S2SV_EndBug> strcpy ( cat_enum . szOpt , sep ) ; sep [ 0 ] = 0 ; } return gf_enum_directory ( cat_enum . szPath , 0 , cat_enumerate , & cat_enum , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = allow_add_in_command ; if ( strlen ( fileName ) >= sizeof <S2SV_ModEnd> ( cat_enum . <S2SV_ModStart> cat_enum . szPath ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"File<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" , fileName ) ) ; return GF_NOT_SUPPORTED ; } strcpy ( cat_enum . szPath <S2SV_ModStart> \".\" ) ; if ( strlen ( fileName ) >= sizeof <S2SV_ModEnd> ( cat_enum . <S2SV_ModStart> cat_enum . szRad1 ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"File<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" , fileName ) ) ; return GF_NOT_SUPPORTED ; } strcpy ( cat_enum . szRad1 <S2SV_ModStart> } else { if ( strlen ( <S2SV_ModEnd> sep + 1 <S2SV_ModStart> + 1 ) >= sizeof <S2SV_ModEnd> ( cat_enum . <S2SV_ModStart> cat_enum . szRad1 ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"File<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" , ( <S2SV_ModEnd> sep + 1 <S2SV_ModStart> + 1 ) ) ) ; return GF_NOT_SUPPORTED ; } strcpy ( cat_enum . szRad1 , sep + 1 ) <S2SV_ModStart> = 0 ; } <S2SV_ModStart> ( cat_enum . szRad1 , '*' ) ; if ( strlen ( sep + 1 ) >= sizeof ( cat_enum . szRad2 ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"File<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" , ( sep + 1 ) ) ) ; return GF_NOT_SUPPORTED ; } strcpy ( cat_enum . szRad2 , sep + 1 ) ; sep [ 0 ] = 0 ; sep = strchr ( cat_enum . szRad2 <S2SV_ModEnd> , '%' ) <S2SV_ModStart> sep ) { if ( strlen ( sep ) >= sizeof ( cat_enum . szOpt ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"Invalid<S2SV_blank>option:<S2SV_blank>%s.\\\\n\" , sep ) ) ; return GF_NOT_SUPPORTED ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-346(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5592\n\n```\nCWE-346 void receive_carbon ( void * * state ) { prof_input ( \"/carbons<S2SV_blank>on\" ) ; prof_connect ( ) ; assert_true ( stbbr_received ( \"<iq<S2SV_blank>id=\\'*\\'<S2SV_blank>type=\\'set\\'><enable<S2SV_blank>xmlns=\\'urn:xmpp:carbons:2\\'/></iq>\" ) ) ; stbbr_send ( \"<presence<S2SV_blank>to=\\'stabber@localhost\\'<S2SV_blank>from=\\'buddy1@localhost/mobile\\'>\" \"<priority>10</priority>\" \"<status>On<S2SV_blank>my<S2SV_blank>mobile</status>\" \"</presence>\" ) ; assert_true ( prof_output_exact ( \"Buddy1<S2SV_blank>(mobile)<S2SV_blank>is<S2SV_blank>online,<S2SV_blank>\\\\\"On<S2SV_blank>my<S2SV_blank>mobile\\\\\"\" ) ) ; prof_input ( \"/msg<S2SV_blank>Buddy1\" ) ; assert_true ( prof_output_exact ( \"unencrypted\" ) ) ; stbbr_send ( <S2SV_StartBug> \"<message<S2SV_blank>type=\\'chat\\'<S2SV_blank>to=\\'stabber@localhost/profanity\\'<S2SV_blank>from=\\'buddy1@localhost\\'>\" <S2SV_EndBug> \"<received<S2SV_blank>xmlns=\\'urn:xmpp:carbons:2\\'>\" \"<forwarded<S2SV_blank>xmlns=\\'urn:xmpp:forward:0\\'>\" \"<message<S2SV_blank>id=\\'prof_msg_7\\'<S2SV_blank>xmlns=\\'jabber:client\\'<S2SV_blank>type=\\'chat\\'<S2SV_blank>lang=\\'en\\'<S2SV_blank>to=\\'stabber@localhost/profanity\\'<S2SV_blank>from=\\'buddy1@localhost/mobile\\'>\" \"<body>test<S2SV_blank>carbon<S2SV_blank>from<S2SV_blank>recipient</body>\" \"</message>\" \"</forwarded>\" \"</received>\" \"</message>\" ) ; assert_true ( prof_output_regex ( \"Buddy1/mobile:<S2SV_blank>.+test<S2SV_blank>carbon<S2SV_blank>from<S2SV_blank>recipient\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; stbbr_send ( \"<message<S2SV_blank>type=\\'chat\\'<S2SV_blank>to=\\'stabber@localhost/profanity\\'<S2SV_blank>from=\\'stabber@localhost\\'>\" <S2SV_ModEnd> \"<received<S2SV_blank>xmlns=\\'urn:xmpp:carbons:2\\'>\" \"<forwarded<S2SV_blank>xmlns=\\'urn:xmpp:forward:0\\'>\" \"<message<S2SV_blank>id=\\'prof_msg_7\\'<S2SV_blank>xmlns=\\'jabber:client\\'<S2SV_blank>type=\\'chat\\'<S2SV_blank>lang=\\'en\\'<S2SV_blank>to=\\'stabber@localhost/profanity\\'<S2SV_blank>from=\\'buddy1@localhost/mobile\\'>\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 static int mem_read ( jas_stream_obj_t * obj , char * buf , int cnt ) { <S2SV_StartBug> int n ; <S2SV_EndBug> assert ( cnt >= 0 ) ; assert ( buf ) ; JAS_DBGLOG ( 100 , ( \"mem_read(%p,<S2SV_blank>%p,<S2SV_blank>%d)\\\\n\" , obj , buf , cnt ) ) ; jas_stream_memobj_t * m = ( jas_stream_memobj_t * ) obj ; n = m -> len_ - m -> pos_ ; cnt = JAS_MIN ( n , cnt ) ; memcpy ( buf , & m -> buf_ [ m -> pos_ ] , cnt ) ; m -> pos_ += cnt ; return cnt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cnt ) { ssize_t <S2SV_ModEnd> n ; assert\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static MagickBooleanType GetEXIFProperty ( const Image * image , const char * property , ExceptionInfo * exception ) { # define MaxDirectoryStack 16 # define EXIF_DELIMITER \"\\\\n\" # define EXIF_NUM_FORMATS 12 # define EXIF_FMT_BYTE 1 # define EXIF_FMT_STRING 2 # define EXIF_FMT_USHORT 3 # define EXIF_FMT_ULONG 4 # define EXIF_FMT_URATIONAL 5 # define EXIF_FMT_SBYTE 6 # define EXIF_FMT_UNDEFINED 7 # define EXIF_FMT_SSHORT 8 # define EXIF_FMT_SLONG 9 # define EXIF_FMT_SRATIONAL 10 # define EXIF_FMT_SINGLE 11 # define EXIF_FMT_DOUBLE 12 # define TAG_EXIF_OFFSET 0x8769 # define TAG_GPS_OFFSET 0x8825 # define TAG_INTEROP_OFFSET 0xa005 <S2SV_StartBug> # define EXIFMultipleValues ( size , format , arg ) { ssize_t component ; size_t length ; unsigned char * p1 ; length = 0 ; p1 = p ; for ( component = 0 ; component < components ; component ++ ) { length += FormatLocaleString ( buffer + length , MagickPathExtent - length , format \",<S2SV_blank>\" , arg ) ; if ( length >= ( MagickPathExtent - 1 ) ) length = MagickPathExtent - 1 ; p1 += size ; } if ( length > 1 ) buffer [ length - 2 ] = '\\\\0' ; value = AcquireString ( buffer ) ; } <S2SV_EndBug> <S2SV_StartBug> # define EXIFMultipleFractions ( size , format , arg1 , arg2 ) { ssize_t component ; size_t length ; unsigned char * p1 ; length = 0 ; p1 = p ; for ( component = 0 ; component < components ; component ++ ) { length += FormatLocaleString ( buffer + length , MagickPathExtent - length , format \",<S2SV_blank>\" , ( arg1 ) , ( arg2 ) ) ; if ( length >= ( MagickPathExtent - 1 ) ) length = MagickPathExtent - 1 ; p1 += size ; } if ( length > 1 ) buffer [ length - 2 ] = '\\\\0' ; value = AcquireString ( buffer ) ; } <S2SV_EndBug> typedef struct _DirectoryInfo { const unsigned char * directory ; size_t entry ; ssize_t offset ; } DirectoryInfo ; typedef struct _TagInfo { size_t tag ; const char * description ; } TagInfo ; static TagInfo EXIFTag [ ] = { { 0x001 , \"exif:InteroperabilityIndex\" } , { 0x002 , \"exif:InteroperabilityVersion\" } , { 0x100 , \"exif:ImageWidth\" } , { 0x101 , \"exif:ImageLength\" } , { 0x102 , \"exif:BitsPerSample\" } , { 0x103 , \"exif:Compression\" } , { 0x106 , \"exif:PhotometricInterpretation\" } , { 0x10a , \"exif:FillOrder\" } , { 0x10d , \"exif:DocumentName\" } , { 0x10e , \"exif:ImageDescription\" } , { 0x10f , \"exif:Make\" } , { 0x110 , \"exif:Model\" } , { 0x111 , \"exif:StripOffsets\" } , { 0x112 , \"exif:Orientation\" } , { 0x115 , \"exif:SamplesPerPixel\" } , { 0x116 , \"exif:RowsPerStrip\" } , { 0x117 , \"exif:StripByteCounts\" } , { 0x11a , \"exif:XResolution\" } , { 0x11b , \"exif:YResolution\" } , { 0x11c , \"exif:PlanarConfiguration\" } , { 0x11d , \"exif:PageName\" } , { 0x11e , \"exif:XPosition\" } , { 0x11f , \"exif:YPosition\" } , { 0x118 , \"exif:MinSampleValue\" } , { 0x119 , \"exif:MaxSampleValue\" } , { 0x120 , \"exif:FreeOffsets\" } , { 0x121 , \"exif:FreeByteCounts\" } , { 0x122 , \"exif:GrayResponseUnit\" } , { 0x123 , \"exif:GrayResponseCurve\" } , { 0x124 , \"exif:T4Options\" } , { 0x125 , \"exif:T6Options\" } , { 0x128 , \"exif:ResolutionUnit\" } , { 0x12d , \"exif:TransferFunction\" } , { 0x131 , \"exif:Software\" } , { 0x132 , \"exif:DateTime\" } , { 0x13b , \"exif:Artist\" } , { 0x13e , \"exif:WhitePoint\" } , { 0x13f , \"exif:PrimaryChromaticities\" } , { 0x140 , \"exif:ColorMap\" } , { 0x141 , \"exif:HalfToneHints\" } , { 0x142 , \"exif:TileWidth\" } , { 0x143 , \"exif:TileLength\" } , { 0x144 , \"exif:TileOffsets\" } , { 0x145 , \"exif:TileByteCounts\" } , { 0x14a , \"exif:SubIFD\" } , { 0x14c , \"exif:InkSet\" } , { 0x14d , \"exif:InkNames\" } , { 0x14e , \"exif:NumberOfInks\" } , { 0x150 , \"exif:DotRange\" } , { 0x151 , \"exif:TargetPrinter\" } , { 0x152 , \"exif:ExtraSample\" } , { 0x153 , \"exif:SampleFormat\" } , { 0x154 , \"exif:SMinSampleValue\" } , { 0x155 , \"exif:SMaxSampleValue\" } , { 0x156 , \"exif:TransferRange\" } , { 0x157 , \"exif:ClipPath\" } , { 0x158 , \"exif:XClipPathUnits\" } , { 0x159 , \"exif:YClipPathUnits\" } , { 0x15a , \"exif:Indexed\" } , { 0x15b , \"exif:JPEGTables\" } , { 0x15f , \"exif:OPIProxy\" } , { 0x200 , \"exif:JPEGProc\" } , { 0x201 , \"exif:JPEGInterchangeFormat\" } , { 0x202 , \"exif:JPEGInterchangeFormatLength\" } , { 0x203 , \"exif:JPEGRestartInterval\" } , { 0x205 , \"exif:JPEGLosslessPredictors\" } , { 0x206 , \"exif:JPEGPointTransforms\" } , { 0x207 , \"exif:JPEGQTables\" } , { 0x208 , \"exif:JPEGDCTables\" } , { 0x209 , \"exif:JPEGACTables\" } , { 0x211 , \"exif:YCbCrCoefficients\" } , { 0x212 , \"exif:YCbCrSubSampling\" } , { 0x213 , \"exif:YCbCrPositioning\" } , { 0x214 , \"exif:ReferenceBlackWhite\" } , { 0x2bc , \"exif:ExtensibleMetadataPlatform\" } , { 0x301 , \"exif:Gamma\" } , { 0x302 , \"exif:ICCProfileDescriptor\" } , { 0x303 , \"exif:SRGBRenderingIntent\" } , { 0x320 , \"exif:ImageTitle\" } , { 0x5001 , \"exif:ResolutionXUnit\" } , { 0x5002 , \"exif:ResolutionYUnit\" } , { 0x5003 , \"exif:ResolutionXLengthUnit\" } , { 0x5004 , \"exif:ResolutionYLengthUnit\" } , { 0x5005 , \"exif:PrintFlags\" } , { 0x5006 , \"exif:PrintFlagsVersion\" } , { 0x5007 , \"exif:PrintFlagsCrop\" } , { 0x5008 , \"exif:PrintFlagsBleedWidth\" } , { 0x5009 , \"exif:PrintFlagsBleedWidthScale\" } , { 0x500A , \"exif:HalftoneLPI\" } , { 0x500B , \"exif:HalftoneLPIUnit\" } , { 0x500C , \"exif:HalftoneDegree\" } , { 0x500D , \"exif:HalftoneShape\" } , { 0x500E , \"exif:HalftoneMisc\" } , { 0x500F , \"exif:HalftoneScreen\" } , { 0x5010 , \"exif:JPEGQuality\" } , { 0x5011 , \"exif:GridSize\" } , { 0x5012 , \"exif:ThumbnailFormat\" } , { 0x5013 , \"exif:ThumbnailWidth\" } , { 0x5014 , \"exif:ThumbnailHeight\" } , { 0x5015 , \"exif:ThumbnailColorDepth\" } , { 0x5016 , \"exif:ThumbnailPlanes\" } , { 0x5017 , \"exif:ThumbnailRawBytes\" } , { 0x5018 , \"exif:ThumbnailSize\" } , { 0x5019 , \"exif:ThumbnailCompressedSize\" } , { 0x501a , \"exif:ColorTransferFunction\" } , { 0x501b , \"exif:ThumbnailData\" } , { 0x5020 , \"exif:ThumbnailImageWidth\" } , { 0x5021 , \"exif:ThumbnailImageHeight\" } , { 0x5022 , \"exif:ThumbnailBitsPerSample\" } , { 0x5023 , \"exif:ThumbnailCompression\" } , { 0x5024 , \"exif:ThumbnailPhotometricInterp\" } , { 0x5025 , \"exif:ThumbnailImageDescription\" } , { 0x5026 , \"exif:ThumbnailEquipMake\" } , { 0x5027 , \"exif:ThumbnailEquipModel\" } , { 0x5028 , \"exif:ThumbnailStripOffsets\" } , { 0x5029 , \"exif:ThumbnailOrientation\" } , { 0x502a , \"exif:ThumbnailSamplesPerPixel\" } , { 0x502b , \"exif:ThumbnailRowsPerStrip\" } , { 0x502c , \"exif:ThumbnailStripBytesCount\" } , { 0x502d , \"exif:ThumbnailResolutionX\" } , { 0x502e , \"exif:ThumbnailResolutionY\" } , { 0x502f , \"exif:ThumbnailPlanarConfig\" } , { 0x5030 , \"exif:ThumbnailResolutionUnit\" } , { 0x5031 , \"exif:ThumbnailTransferFunction\" } , { 0x5032 , \"exif:ThumbnailSoftwareUsed\" } , { 0x5033 , \"exif:ThumbnailDateTime\" } , { 0x5034 , \"exif:ThumbnailArtist\" } , { 0x5035 , \"exif:ThumbnailWhitePoint\" } , { 0x5036 , \"exif:ThumbnailPrimaryChromaticities\" } , { 0x5037 , \"exif:ThumbnailYCbCrCoefficients\" } , { 0x5038 , \"exif:ThumbnailYCbCrSubsampling\" } , { 0x5039 , \"exif:ThumbnailYCbCrPositioning\" } , { 0x503A , \"exif:ThumbnailRefBlackWhite\" } , { 0x503B , \"exif:ThumbnailCopyRight\" } , { 0x5090 , \"exif:LuminanceTable\" } , { 0x5091 , \"exif:ChrominanceTable\" } , { 0x5100 , \"exif:FrameDelay\" } , { 0x5101 , \"exif:LoopCount\" } , { 0x5110 , \"exif:PixelUnit\" } , { 0x5111 , \"exif:PixelPerUnitX\" } , { 0x5112 , \"exif:PixelPerUnitY\" } , { 0x5113 , \"exif:PaletteHistogram\" } , { 0x1000 , \"exif:RelatedImageFileFormat\" } , { 0x1001 , \"exif:RelatedImageLength\" } , { 0x1002 , \"exif:RelatedImageWidth\" } , { 0x800d , \"exif:ImageID\" } , { 0x80e3 , \"exif:Matteing\" } , { 0x80e4 , \"exif:DataType\" } , { 0x80e5 , \"exif:ImageDepth\" } , { 0x80e6 , \"exif:TileDepth\" } , { 0x828d , \"exif:CFARepeatPatternDim\" } , { 0x828e , \"exif:CFAPattern2\" } , { 0x828f , \"exif:BatteryLevel\" } , { 0x8298 , \"exif:Copyright\" } , { 0x829a , \"exif:ExposureTime\" } , { 0x829d , \"exif:FNumber\" } , { 0x83bb , \"exif:IPTC/NAA\" } , { 0x84e3 , \"exif:IT8RasterPadding\" } , { 0x84e5 , \"exif:IT8ColorTable\" } , { 0x8649 , \"exif:ImageResourceInformation\" } , { 0x8769 , \"exif:ExifOffset\" } , { 0x8773 , \"exif:InterColorProfile\" } , { 0x8822 , \"exif:ExposureProgram\" } , { 0x8824 , \"exif:SpectralSensitivity\" } , { 0x8825 , \"exif:GPSInfo\" } , { 0x8827 , \"exif:ISOSpeedRatings\" } , { 0x8828 , \"exif:OECF\" } , { 0x8829 , \"exif:Interlace\" } , { 0x882a , \"exif:TimeZoneOffset\" } , { 0x882b , \"exif:SelfTimerMode\" } , { 0x9000 , \"exif:ExifVersion\" } , { 0x9003 , \"exif:DateTimeOriginal\" } , { 0x9004 , \"exif:DateTimeDigitized\" } , { 0x9101 , \"exif:ComponentsConfiguration\" } , { 0x9102 , \"exif:CompressedBitsPerPixel\" } , { 0x9201 , \"exif:ShutterSpeedValue\" } , { 0x9202 , \"exif:ApertureValue\" } , { 0x9203 , \"exif:BrightnessValue\" } , { 0x9204 , \"exif:ExposureBiasValue\" } , { 0x9205 , \"exif:MaxApertureValue\" } , { 0x9206 , \"exif:SubjectDistance\" } , { 0x9207 , \"exif:MeteringMode\" } , { 0x9208 , \"exif:LightSource\" } , { 0x9209 , \"exif:Flash\" } , { 0x920a , \"exif:FocalLength\" } , { 0x920b , \"exif:FlashEnergy\" } , { 0x920c , \"exif:SpatialFrequencyResponse\" } , { 0x920d , \"exif:Noise\" } , { 0x9211 , \"exif:ImageNumber\" } , { 0x9212 , \"exif:SecurityClassification\" } , { 0x9213 , \"exif:ImageHistory\" } , { 0x9214 , \"exif:SubjectArea\" } , { 0x9215 , \"exif:ExposureIndex\" } , { 0x9216 , \"exif:TIFF-EPStandardID\" } , { 0x927c , \"exif:MakerNote\" } , { 0x9C9b , \"exif:WinXP-Title\" } , { 0x9C9c , \"exif:WinXP-Comments\" } , { 0x9C9d , \"exif:WinXP-Author\" } , { 0x9C9e , \"exif:WinXP-Keywords\" } , { 0x9C9f , \"exif:WinXP-Subject\" } , { 0x9286 , \"exif:UserComment\" } , { 0x9290 , \"exif:SubSecTime\" } , { 0x9291 , \"exif:SubSecTimeOriginal\" } , { 0x9292 , \"exif:SubSecTimeDigitized\" } , { 0xa000 , \"exif:FlashPixVersion\" } , { 0xa001 , \"exif:ColorSpace\" } , { 0xa002 , \"exif:ExifImageWidth\" } , { 0xa003 , \"exif:ExifImageLength\" } , { 0xa004 , \"exif:RelatedSoundFile\" } , { 0xa005 , \"exif:InteroperabilityOffset\" } , { 0xa20b , \"exif:FlashEnergy\" } , { 0xa20c , \"exif:SpatialFrequencyResponse\" } , { 0xa20d , \"exif:Noise\" } , { 0xa20e , \"exif:FocalPlaneXResolution\" } , { 0xa20f , \"exif:FocalPlaneYResolution\" } , { 0xa210 , \"exif:FocalPlaneResolutionUnit\" } , { 0xa214 , \"exif:SubjectLocation\" } , { 0xa215 , \"exif:ExposureIndex\" } , { 0xa216 , \"exif:TIFF/EPStandardID\" } , { 0xa217 , \"exif:SensingMethod\" } , { 0xa300 , \"exif:FileSource\" } , { 0xa301 , \"exif:SceneType\" } , { 0xa302 , \"exif:CFAPattern\" } , { 0xa401 , \"exif:CustomRendered\" } , { 0xa402 , \"exif:ExposureMode\" } , { 0xa403 , \"exif:WhiteBalance\" } , { 0xa404 , \"exif:DigitalZoomRatio\" } , { 0xa405 , \"exif:FocalLengthIn35mmFilm\" } , { 0xa406 , \"exif:SceneCaptureType\" } , { 0xa407 , \"exif:GainControl\" } , { 0xa408 , \"exif:Contrast\" } , { 0xa409 , \"exif:Saturation\" } , { 0xa40a , \"exif:Sharpness\" } , { 0xa40b , \"exif:DeviceSettingDescription\" } , { 0xa40c , \"exif:SubjectDistanceRange\" } , { 0xa420 , \"exif:ImageUniqueID\" } , { 0xc4a5 , \"exif:PrintImageMatching\" } , { 0xa500 , \"exif:Gamma\" } , { 0xc640 , \"exif:CR2Slice\" } , { 0x10000 , \"exif:GPSVersionID\" } , { 0x10001 , \"exif:GPSLatitudeRef\" } , { 0x10002 , \"exif:GPSLatitude\" } , { 0x10003 , \"exif:GPSLongitudeRef\" } , { 0x10004 , \"exif:GPSLongitude\" } , { 0x10005 , \"exif:GPSAltitudeRef\" } , { 0x10006 , \"exif:GPSAltitude\" } , { 0x10007 , \"exif:GPSTimeStamp\" } , { 0x10008 , \"exif:GPSSatellites\" } , { 0x10009 , \"exif:GPSStatus\" } , { 0x1000a , \"exif:GPSMeasureMode\" } , { 0x1000b , \"exif:GPSDop\" } , { 0x1000c , \"exif:GPSSpeedRef\" } , { 0x1000d , \"exif:GPSSpeed\" } , { 0x1000e , \"exif:GPSTrackRef\" } , { 0x1000f , \"exif:GPSTrack\" } , { 0x10010 , \"exif:GPSImgDirectionRef\" } , { 0x10011 , \"exif:GPSImgDirection\" } , { 0x10012 , \"exif:GPSMapDatum\" } , { 0x10013 , \"exif:GPSDestLatitudeRef\" } , { 0x10014 , \"exif:GPSDestLatitude\" } , { 0x10015 , \"exif:GPSDestLongitudeRef\" } , { 0x10016 , \"exif:GPSDestLongitude\" } , { 0x10017 , \"exif:GPSDestBearingRef\" } , { 0x10018 , \"exif:GPSDestBearing\" } , { 0x10019 , \"exif:GPSDestDistanceRef\" } , { 0x1001a , \"exif:GPSDestDistance\" } , { 0x1001b , \"exif:GPSProcessingMethod\" } , { 0x1001c , \"exif:GPSAreaInformation\" } , { 0x1001d , \"exif:GPSDateStamp\" } , { 0x1001e , \"exif:GPSDifferential\" } , { 0x00000 , ( const char * ) NULL } } ; const StringInfo * profile ; const unsigned char * directory , * exif ; DirectoryInfo directory_stack [ MaxDirectoryStack ] ; EndianType endian ; MagickBooleanType status ; register ssize_t i ; size_t entry , length , number_entries , tag , tag_value ; SplayTreeInfo * exif_resources ; ssize_t all , id , level , offset , tag_offset ; static int tag_bytes [ ] = { 0 , 1 , 1 , 2 , 4 , 8 , 1 , 1 , 2 , 4 , 8 , 4 , 8 } ; profile = GetImageProfile ( image , \"exif\" ) ; if ( profile == ( const StringInfo * ) NULL ) return ( MagickFalse ) ; if ( ( property == ( const char * ) NULL ) || ( * property == '\\\\0' ) ) return ( MagickFalse ) ; while ( isspace ( ( int ) ( ( unsigned char ) * property ) ) != 0 ) property ++ ; if ( strlen ( property ) <= 5 ) return ( MagickFalse ) ; all = 0 ; tag = ( ~ 0UL ) ; switch ( * ( property + 5 ) ) { case '*' : { tag = 0 ; all = 1 ; break ; } case '!' : { tag = 0 ; all = 2 ; break ; } case '#' : case '@' : { int c ; size_t n ; tag = ( * ( property + 5 ) == '@' ) ? 1UL : 0UL ; property += 6 ; n = strlen ( property ) ; if ( n != 4 ) return ( MagickFalse ) ; n /= 4 ; do { for ( i = ( ssize_t ) n - 1L ; i >= 0 ; i -- ) { c = ( * property ++ ) ; tag <<= 4 ; if ( ( c >= '0' ) && ( c <= '9' ) ) tag |= ( c - '0' ) ; else if ( ( c >= 'A' ) && ( c <= 'F' ) ) tag |= ( c - ( 'A' - 10 ) ) ; else if ( ( c >= 'a' ) && ( c <= 'f' ) ) tag |= ( c - ( 'a' - 10 ) ) ; else return ( MagickFalse ) ; } } while ( * property != '\\\\0' ) ; break ; } default : { for ( i = 0 ; ; i ++ ) { if ( EXIFTag [ i ] . tag == 0 ) break ; if ( LocaleCompare ( EXIFTag [ i ] . description , property ) == 0 ) { tag = ( size_t ) EXIFTag [ i ] . tag ; break ; } } break ; } } if ( tag == ( ~ 0UL ) ) return ( MagickFalse ) ; length = GetStringInfoLength ( profile ) ; exif = GetStringInfoDatum ( profile ) ; while ( length != 0 ) { if ( ReadPropertyByte ( & exif , & length ) != 0x45 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x78 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x69 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x66 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x00 ) continue ; if ( ReadPropertyByte ( & exif , & length ) != 0x00 ) continue ; break ; } if ( length < 16 ) return ( MagickFalse ) ; id = ( ssize_t ) ReadPropertySignedShort ( LSBEndian , exif ) ; endian = LSBEndian ; if ( id == 0x4949 ) endian = LSBEndian ; else if ( id == 0x4D4D ) endian = MSBEndian ; else return ( MagickFalse ) ; if ( ReadPropertyUnsignedShort ( endian , exif + 2 ) != 0x002a ) return ( MagickFalse ) ; offset = ( ssize_t ) ReadPropertySignedLong ( endian , exif + 4 ) ; if ( ( offset < 0 ) || ( size_t ) offset >= length ) return ( MagickFalse ) ; status = MagickFalse ; directory = exif + offset ; level = 0 ; entry = 0 ; tag_offset = 0 ; exif_resources = NewSplayTree ( ( int ( * ) ( const void * , const void * ) ) NULL , ( void * ( * ) ( void * ) ) NULL , ( void * ( * ) ( void * ) ) NULL ) ; do { if ( level > 0 ) { level -- ; directory = directory_stack [ level ] . directory ; entry = directory_stack [ level ] . entry ; tag_offset = directory_stack [ level ] . offset ; } if ( ( directory < exif ) || ( directory > ( exif + length - 2 ) ) ) break ; number_entries = ( size_t ) ReadPropertyUnsignedShort ( endian , directory ) ; for ( ; entry < number_entries ; entry ++ ) { register unsigned char * p , * q ; size_t format ; ssize_t number_bytes , components ; q = ( unsigned char * ) ( directory + ( 12 * entry ) + 2 ) ; <S2SV_StartBug> if ( GetValueFromSplayTree ( exif_resources , q ) == q ) <S2SV_EndBug> break ; ( void ) AddValueToSplayTree ( exif_resources , q , q ) ; tag_value = ( size_t ) ReadPropertyUnsignedShort ( endian , q ) + tag_offset ; format = ( size_t ) ReadPropertyUnsignedShort ( endian , q + 2 ) ; if ( format >= ( sizeof ( tag_bytes ) / sizeof ( * tag_bytes ) ) ) break ; <S2SV_StartBug> components = ( ssize_t ) ReadPropertySignedLong ( endian , q + 4 ) ; <S2SV_EndBug> number_bytes = ( size_t ) components * tag_bytes [ format ] ; if ( number_bytes < components ) break ; if ( number_bytes <= 4 ) p = q + 8 ; else { ssize_t offset ; offset = ( ssize_t ) ReadPropertySignedLong ( endian , q + 8 ) ; if ( ( offset < 0 ) || ( size_t ) offset >= length ) continue ; if ( ( ssize_t ) ( offset + number_bytes ) < offset ) continue ; if ( ( size_t ) ( offset + number_bytes ) > length ) continue ; p = ( unsigned char * ) ( exif + offset ) ; } if ( ( all != 0 ) || ( tag == ( size_t ) tag_value ) ) { char buffer [ MagickPathExtent ] , * value ; value = ( char * ) NULL ; * buffer = '\\\\0' ; switch ( format ) { case EXIF_FMT_BYTE : case EXIF_FMT_UNDEFINED : { EXIFMultipleValues ( 1 , \"%.20g\" , ( double ) ( * ( unsigned char * ) p1 ) ) ; break ; } case EXIF_FMT_SBYTE : { EXIFMultipleValues ( 1 , \"%.20g\" , ( double ) ( * ( signed char * ) p1 ) ) ; break ; } case EXIF_FMT_SSHORT : { EXIFMultipleValues ( 2 , \"%hd\" , ReadPropertySignedShort ( endian , p1 ) ) ; break ; } case EXIF_FMT_USHORT : { EXIFMultipleValues ( 2 , \"%hu\" , ReadPropertyUnsignedShort ( endian , p1 ) ) ; break ; } case EXIF_FMT_ULONG : { EXIFMultipleValues ( 4 , \"%.20g\" , ( double ) ReadPropertyUnsignedLong ( endian , p1 ) ) ; break ; } case EXIF_FMT_SLONG : { EXIFMultipleValues ( 4 , \"%.20g\" , ( double ) ReadPropertySignedLong ( endian , p1 ) ) ; break ; } case EXIF_FMT_URATIONAL : { EXIFMultipleFractions ( 8 , \"%.20g/%.20g\" , ( double ) ReadPropertyUnsignedLong ( endian , p1 ) , ( double ) ReadPropertyUnsignedLong ( endian , p1 + 4 ) ) ; break ; } case EXIF_FMT_SRATIONAL : { EXIFMultipleFractions ( 8 , \"%.20g/%.20g\" , ( double ) ReadPropertySignedLong ( endian , p1 ) , ( double ) ReadPropertySignedLong ( endian , p1 + 4 ) ) ; break ; } case EXIF_FMT_SINGLE : { EXIFMultipleValues ( 4 , \"%f\" , ( double ) * ( float * ) p1 ) ; break ; } case EXIF_FMT_DOUBLE : { EXIFMultipleValues ( 8 , \"%f\" , * ( double * ) p1 ) ; break ; } default : case EXIF_FMT_STRING : { value = ( char * ) NULL ; if ( ~ ( ( size_t ) number_bytes ) >= 1 ) value = ( char * ) AcquireQuantumMemory ( ( size_t ) number_bytes + 1UL , sizeof ( * value ) ) ; if ( value != ( char * ) NULL ) { register ssize_t i ; for ( i = 0 ; i < ( ssize_t ) number_bytes ; i ++ ) { value [ i ] = '.' ; if ( ( isprint ( ( int ) p [ i ] ) != 0 ) || ( p [ i ] == '\\\\0' ) ) value [ i ] = ( char ) p [ i ] ; } value [ i ] = '\\\\0' ; } break ; } } if ( value != ( char * ) NULL ) { char * key ; register const char * p ; key = AcquireString ( property ) ; switch ( all ) { case 1 : { const char * description ; register ssize_t i ; description = \"unknown\" ; for ( i = 0 ; ; i ++ ) { if ( EXIFTag [ i ] . tag == 0 ) break ; if ( EXIFTag [ i ] . tag == tag_value ) { description = EXIFTag [ i ] . description ; break ; } } ( void ) FormatLocaleString ( key , MagickPathExtent , \"%s\" , description ) ; if ( level == 2 ) ( void ) SubstituteString ( & key , \"exif:\" , \"exif:thumbnail:\" ) ; break ; } case 2 : { if ( tag_value < 0x10000 ) ( void ) FormatLocaleString ( key , MagickPathExtent , \"#%04lx\" , ( unsigned long ) tag_value ) ; else if ( tag_value < 0x20000 ) ( void ) FormatLocaleString ( key , MagickPathExtent , \"@%04lx\" , ( unsigned long ) ( tag_value & 0xffff ) ) ; else ( void ) FormatLocaleString ( key , MagickPathExtent , \"unknown\" ) ; break ; } default : { if ( level == 2 ) ( void ) SubstituteString ( & key , \"exif:\" , \"exif:thumbnail:\" ) ; } } p = ( const char * ) NULL ; if ( image -> properties != ( void * ) NULL ) p = ( const char * ) GetValueFromSplayTree ( ( SplayTreeInfo * ) image -> properties , key ) ; if ( p == ( const char * ) NULL ) ( void ) SetImageProperty ( ( Image * ) image , key , value , exception ) ; value = DestroyString ( value ) ; key = DestroyString ( key ) ; status = MagickTrue ; } } if ( ( tag_value == TAG_EXIF_OFFSET ) || ( tag_value == TAG_INTEROP_OFFSET ) || ( tag_value == TAG_GPS_OFFSET ) ) { ssize_t offset ; offset = ( ssize_t ) ReadPropertySignedLong ( endian , p ) ; if ( ( ( size_t ) offset < length ) && ( level < ( MaxDirectoryStack - 2 ) ) ) { ssize_t tag_offset1 ; tag_offset1 = ( ssize_t ) ( ( tag_value == TAG_GPS_OFFSET ) ? 0x10000 : 0 ) ; directory_stack [ level ] . directory = directory ; entry ++ ; directory_stack [ level ] . entry = entry ; directory_stack [ level ] . offset = tag_offset ; level ++ ; directory_stack [ level ] . directory = exif + offset ; directory_stack [ level ] . offset = tag_offset1 ; directory_stack [ level ] . entry = 0 ; level ++ ; if ( ( directory + 2 + ( 12 * number_entries ) ) > ( exif + length ) ) break ; offset = ( ssize_t ) ReadPropertySignedLong ( endian , directory + 2 + ( 12 * number_entries ) ) ; if ( ( offset != 0 ) && ( ( size_t ) offset < length ) && ( level < ( MaxDirectoryStack - 2 ) ) ) { directory_stack [ level ] . directory = exif + offset ; directory_stack [ level ] . entry = 0 ; directory_stack [ level ] . offset = tag_offset1 ; level ++ ; } } break ; } } } while ( level > 0 ) ; exif_resources = DestroySplayTree ( exif_resources ) ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , arg ) \\\\\\n{ <S2SV_ModEnd> ssize_t component ; <S2SV_ModStart> buffer ) ; \\\\\\n} <S2SV_ModEnd> # define EXIFMultipleFractions <S2SV_ModStart> , arg2 ) \\\\\\n{ <S2SV_ModEnd> ssize_t component ; <S2SV_ModStart> buffer ) ; \\\\\\n} <S2SV_ModEnd> typedef struct _DirectoryInfo <S2SV_ModStart> ; if ( q > ( exif + length - 12 ) ) break ; if ( <S2SV_ModStart> + 4 ) ; if ( components < 0 ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16909\n\n```\nCWE-119 void CLASS identify ( ) { static const short pana [ ] [ 6 ] = { { 3130 , 1743 , 4 , 0 , - 6 , 0 } , { 3130 , 2055 , 4 , 0 , - 6 , 0 } , { 3130 , 2319 , 4 , 0 , - 6 , 0 } , { 3170 , 2103 , 18 , 0 , - 42 , 20 } , { 3170 , 2367 , 18 , 13 , - 42 , - 21 } , { 3177 , 2367 , 0 , 0 , - 1 , 0 } , { 3304 , 2458 , 0 , 0 , - 1 , 0 } , { 3330 , 2463 , 9 , 0 , - 5 , 0 } , { 3330 , 2479 , 9 , 0 , - 17 , 4 } , { 3370 , 1899 , 15 , 0 , - 44 , 20 } , { 3370 , 2235 , 15 , 0 , - 44 , 20 } , { 3370 , 2511 , 15 , 10 , - 44 , - 21 } , { 3690 , 2751 , 3 , 0 , - 8 , - 3 } , { 3710 , 2751 , 0 , 0 , - 3 , 0 } , { 3724 , 2450 , 0 , 0 , 0 , - 2 } , { 3770 , 2487 , 17 , 0 , - 44 , 19 } , { 3770 , 2799 , 17 , 15 , - 44 , - 19 } , { 3880 , 2170 , 6 , 0 , - 6 , 0 } , { 4060 , 3018 , 0 , 0 , 0 , - 2 } , { 4290 , 2391 , 3 , 0 , - 8 , - 1 } , { 4330 , 2439 , 17 , 15 , - 44 , - 19 } , { 4508 , 2962 , 0 , 0 , - 3 , - 4 } , { 4508 , 3330 , 0 , 0 , - 3 , - 6 } , } ; static const ushort canon [ ] [ 11 ] = { { 1944 , 1416 , 0 , 0 , 48 , 0 } , { 2144 , 1560 , 4 , 8 , 52 , 2 , 0 , 0 , 0 , 25 } , { 2224 , 1456 , 48 , 6 , 0 , 2 } , { 2376 , 1728 , 12 , 6 , 52 , 2 } , { 2672 , 1968 , 12 , 6 , 44 , 2 } , { 3152 , 2068 , 64 , 12 , 0 , 0 , 16 } , { 3160 , 2344 , 44 , 12 , 4 , 4 } , { 3344 , 2484 , 4 , 6 , 52 , 6 } , { 3516 , 2328 , 42 , 14 , 0 , 0 } , { 3596 , 2360 , 74 , 12 , 0 , 0 } , { 3744 , 2784 , 52 , 12 , 8 , 12 } , { 3944 , 2622 , 30 , 18 , 6 , 2 } , { 3948 , 2622 , 42 , 18 , 0 , 2 } , { 3984 , 2622 , 76 , 20 , 0 , 2 , 14 } , { 4104 , 3048 , 48 , 12 , 24 , 12 } , { 4116 , 2178 , 4 , 2 , 0 , 0 } , { 4152 , 2772 , 192 , 12 , 0 , 0 } , { 4160 , 3124 , 104 , 11 , 8 , 65 } , { 4176 , 3062 , 96 , 17 , 8 , 0 , 0 , 16 , 0 , 7 , 0x49 } , { 4192 , 3062 , 96 , 17 , 24 , 0 , 0 , 16 , 0 , 0 , 0x49 } , { 4312 , 2876 , 22 , 18 , 0 , 2 } , { 4352 , 2874 , 62 , 18 , 0 , 0 } , { 4476 , 2954 , 90 , 34 , 0 , 0 } , { 4480 , 3348 , 12 , 10 , 36 , 12 , 0 , 0 , 0 , 18 , 0x49 } , { 4480 , 3366 , 80 , 50 , 0 , 0 } , { 4496 , 3366 , 80 , 50 , 12 , 0 } , { 4768 , 3516 , 96 , 16 , 0 , 0 , 0 , 16 } , { 4832 , 3204 , 62 , 26 , 0 , 0 } , { 4832 , 3228 , 62 , 51 , 0 , 0 } , { 5108 , 3349 , 98 , 13 , 0 , 0 } , { 5120 , 3318 , 142 , 45 , 62 , 0 } , { 5280 , 3528 , 72 , 52 , 0 , 0 } , { 5344 , 3516 , 142 , 51 , 0 , 0 } , { 5344 , 3584 , 126 , 100 , 0 , 2 } , { 5360 , 3516 , 158 , 51 , 0 , 0 } , { 5568 , 3708 , 72 , 38 , 0 , 0 } , { 5632 , 3710 , 96 , 17 , 0 , 0 , 0 , 16 , 0 , 0 , 0x49 } , { 5712 , 3774 , 62 , 20 , 10 , 2 } , { 5792 , 3804 , 158 , 51 , 0 , 0 } , { 5920 , 3950 , 122 , 80 , 2 , 0 } , { 6096 , 4056 , 72 , 34 , 0 , 0 } , { 6288 , 4056 , 266 , 36 , 0 , 0 } , { 6384 , 4224 , 120 , 44 , 0 , 0 } , { 6880 , 4544 , 136 , 42 , 0 , 0 } , { 8896 , 5920 , 160 , 64 , 0 , 0 } , } ; static const struct { ushort id ; char t_model [ 20 ] ; } unique [ ] = { { 0x001 , \"EOS-1D\" } , { 0x167 , \"EOS-1DS\" } , { 0x168 , \"EOS<S2SV_blank>10D\" } , { 0x169 , \"EOS-1D<S2SV_blank>Mark<S2SV_blank>III\" } , { 0x170 , \"EOS<S2SV_blank>300D\" } , { 0x174 , \"EOS-1D<S2SV_blank>Mark<S2SV_blank>II\" } , { 0x175 , \"EOS<S2SV_blank>20D\" } , { 0x176 , \"EOS<S2SV_blank>450D\" } , { 0x188 , \"EOS-1Ds<S2SV_blank>Mark<S2SV_blank>II\" } , { 0x189 , \"EOS<S2SV_blank>350D\" } , { 0x190 , \"EOS<S2SV_blank>40D\" } , { 0x213 , \"EOS<S2SV_blank>5D\" } , { 0x215 , \"EOS-1Ds<S2SV_blank>Mark<S2SV_blank>III\" } , { 0x218 , \"EOS<S2SV_blank>5D<S2SV_blank>Mark<S2SV_blank>II\" } , { 0x232 , \"EOS-1D<S2SV_blank>Mark<S2SV_blank>II<S2SV_blank>N\" } , { 0x234 , \"EOS<S2SV_blank>30D\" } , { 0x236 , \"EOS<S2SV_blank>400D\" } , { 0x250 , \"EOS<S2SV_blank>7D\" } , { 0x252 , \"EOS<S2SV_blank>500D\" } , { 0x254 , \"EOS<S2SV_blank>1000D\" } , { 0x261 , \"EOS<S2SV_blank>50D\" } , { 0x269 , \"EOS-1D<S2SV_blank>X\" } , { 0x270 , \"EOS<S2SV_blank>550D\" } , { 0x281 , \"EOS-1D<S2SV_blank>Mark<S2SV_blank>IV\" } , { 0x285 , \"EOS<S2SV_blank>5D<S2SV_blank>Mark<S2SV_blank>III\" } , { 0x286 , \"EOS<S2SV_blank>600D\" } , { 0x287 , \"EOS<S2SV_blank>60D\" } , { 0x288 , \"EOS<S2SV_blank>1100D\" } , { 0x289 , \"EOS<S2SV_blank>7D<S2SV_blank>Mark<S2SV_blank>II\" } , { 0x301 , \"EOS<S2SV_blank>650D\" } , { 0x302 , \"EOS<S2SV_blank>6D\" } , { 0x324 , \"EOS-1D<S2SV_blank>C\" } , { 0x325 , \"EOS<S2SV_blank>70D\" } , { 0x326 , \"EOS<S2SV_blank>700D\" } , { 0x327 , \"EOS<S2SV_blank>1200D\" } , { 0x328 , \"EOS-1D<S2SV_blank>X<S2SV_blank>Mark<S2SV_blank>II\" } , { 0x331 , \"EOS<S2SV_blank>M\" } , { 0x335 , \"EOS<S2SV_blank>M2\" } , { 0x374 , \"EOS<S2SV_blank>M3\" } , { 0x384 , \"EOS<S2SV_blank>M10\" } , { 0x394 , \"EOS<S2SV_blank>M5\" } , { 0x398 , \"EOS<S2SV_blank>M100\" } , { 0x346 , \"EOS<S2SV_blank>100D\" } , { 0x347 , \"EOS<S2SV_blank>760D\" } , { 0x349 , \"EOS<S2SV_blank>5D<S2SV_blank>Mark<S2SV_blank>IV\" } , { 0x350 , \"EOS<S2SV_blank>80D\" } , { 0x382 , \"EOS<S2SV_blank>5DS\" } , { 0x393 , \"EOS<S2SV_blank>750D\" } , { 0x401 , \"EOS<S2SV_blank>5DS<S2SV_blank>R\" } , { 0x404 , \"EOS<S2SV_blank>1300D\" } , { 0x405 , \"EOS<S2SV_blank>800D\" } , { 0x406 , \"EOS<S2SV_blank>6D<S2SV_blank>Mark<S2SV_blank>II\" } , { 0x407 , \"EOS<S2SV_blank>M6\" } , { 0x408 , \"EOS<S2SV_blank>77D\" } , { 0x417 , \"EOS<S2SV_blank>200D\" } , } , sonique [ ] = { { 0x002 , \"DSC-R1\" } , { 0x100 , \"DSLR-A100\" } , { 0x101 , \"DSLR-A900\" } , { 0x102 , \"DSLR-A700\" } , { 0x103 , \"DSLR-A200\" } , { 0x104 , \"DSLR-A350\" } , { 0x105 , \"DSLR-A300\" } , { 0x106 , \"DSLR-A900\" } , { 0x107 , \"DSLR-A380\" } , { 0x108 , \"DSLR-A330\" } , { 0x109 , \"DSLR-A230\" } , { 0x10a , \"DSLR-A290\" } , { 0x10d , \"DSLR-A850\" } , { 0x10e , \"DSLR-A850\" } , { 0x111 , \"DSLR-A550\" } , { 0x112 , \"DSLR-A500\" } , { 0x113 , \"DSLR-A450\" } , { 0x116 , \"NEX-5\" } , { 0x117 , \"NEX-3\" } , { 0x118 , \"SLT-A33\" } , { 0x119 , \"SLT-A55V\" } , { 0x11a , \"DSLR-A560\" } , { 0x11b , \"DSLR-A580\" } , { 0x11c , \"NEX-C3\" } , { 0x11d , \"SLT-A35\" } , { 0x11e , \"SLT-A65V\" } , { 0x11f , \"SLT-A77V\" } , { 0x120 , \"NEX-5N\" } , { 0x121 , \"NEX-7\" } , { 0x122 , \"NEX-VG20E\" } , { 0x123 , \"SLT-A37\" } , { 0x124 , \"SLT-A57\" } , { 0x125 , \"NEX-F3\" } , { 0x126 , \"SLT-A99V\" } , { 0x127 , \"NEX-6\" } , { 0x128 , \"NEX-5R\" } , { 0x129 , \"DSC-RX100\" } , { 0x12a , \"DSC-RX1\" } , { 0x12b , \"NEX-VG900\" } , { 0x12c , \"NEX-VG30E\" } , { 0x12e , \"ILCE-3000\" } , { 0x12f , \"SLT-A58\" } , { 0x131 , \"NEX-3N\" } , { 0x132 , \"ILCE-7\" } , { 0x133 , \"NEX-5T\" } , { 0x134 , \"DSC-RX100M2\" } , { 0x135 , \"DSC-RX10\" } , { 0x136 , \"DSC-RX1R\" } , { 0x137 , \"ILCE-7R\" } , { 0x138 , \"ILCE-6000\" } , { 0x139 , \"ILCE-5000\" } , { 0x13d , \"DSC-RX100M3\" } , { 0x13e , \"ILCE-7S\" } , { 0x13f , \"ILCA-77M2\" } , { 0x153 , \"ILCE-5100\" } , { 0x154 , \"ILCE-7M2\" } , { 0x155 , \"DSC-RX100M4\" } , { 0x156 , \"DSC-RX10M2\" } , { 0x158 , \"DSC-RX1RM2\" } , { 0x15a , \"ILCE-QX1\" } , { 0x15b , \"ILCE-7RM2\" } , { 0x15e , \"ILCE-7SM2\" } , { 0x161 , \"ILCA-68\" } , { 0x162 , \"ILCA-99M2\" } , { 0x163 , \"DSC-RX10M3\" } , { 0x164 , \"DSC-RX100M5\" } , { 0x165 , \"ILCE-6300\" } , { 0x166 , \"ILCE-9\" } , { 0x168 , \"ILCE-6500\" } , { 0x16a , \"ILCE-7RM3\" } , { 0x16c , \"DSC-RX0\" } , { 0x16d , \"DSC-RX10M4\" } , } ; # ifdef LIBRAW_LIBRARY_BUILD static const libraw_custom_camera_t const_table [ ] # else static const struct { unsigned fsize ; ushort rw , rh ; uchar lm , tm , rm , bm , lf , cf , max , flags ; char t_make [ 10 ] , t_model [ 20 ] ; ushort offset ; } table [ ] # endif = { { 786432 , 1024 , 768 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"AVT\" , \"F-080C\" } , { 1447680 , 1392 , 1040 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"AVT\" , \"F-145C\" } , { 1920000 , 1600 , 1200 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"AVT\" , \"F-201C\" } , { 5067304 , 2588 , 1958 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"AVT\" , \"F-510C\" } , { 5067316 , 2588 , 1958 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"AVT\" , \"F-510C\" , 12 } , { 10134608 , 2588 , 1958 , 0 , 0 , 0 , 0 , 9 , 0x94 , 0 , 0 , \"AVT\" , \"F-510C\" } , { 10134620 , 2588 , 1958 , 0 , 0 , 0 , 0 , 9 , 0x94 , 0 , 0 , \"AVT\" , \"F-510C\" , 12 } , { 16157136 , 3272 , 2469 , 0 , 0 , 0 , 0 , 9 , 0x94 , 0 , 0 , \"AVT\" , \"F-810C\" } , { 15980544 , 3264 , 2448 , 0 , 0 , 0 , 0 , 8 , 0x61 , 0 , 1 , \"AgfaPhoto\" , \"DC-833m\" } , { 9631728 , 2532 , 1902 , 0 , 0 , 0 , 0 , 96 , 0x61 , 0 , 0 , \"Alcatel\" , \"5035D\" } , { 31850496 , 4608 , 3456 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"GITUP\" , \"GIT2<S2SV_blank>4:3\" } , { 23887872 , 4608 , 2592 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"GITUP\" , \"GIT2<S2SV_blank>16:9\" } , { 32257024 , 4624 , 3488 , 8 , 2 , 16 , 2 , 0 , 0x94 , 0 , 0 , \"GITUP\" , \"GIT2P<S2SV_blank>4:3\" } , { 1540857 , 2688 , 1520 , 0 , 0 , 0 , 0 , 1 , 0x61 , 0 , 0 , \"Samsung\" , \"S3\" } , { 2658304 , 1212 , 1096 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"LG\" , \"G3FrontMipi\" } , { 2842624 , 1296 , 1096 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"LG\" , \"G3FrontQCOM\" } , { 2969600 , 1976 , 1200 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"Xiaomi\" , \"MI3wMipi\" } , { 3170304 , 1976 , 1200 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"Xiaomi\" , \"MI3wQCOM\" } , { 3763584 , 1584 , 1184 , 0 , 0 , 0 , 0 , 96 , 0x61 , 0 , 0 , \"I_Mobile\" , \"I_StyleQ6\" } , { 5107712 , 2688 , 1520 , 0 , 0 , 0 , 0 , 1 , 0x61 , 0 , 0 , \"OmniVisi\" , \"UltraPixel1\" } , { 5382640 , 2688 , 1520 , 0 , 0 , 0 , 0 , 1 , 0x61 , 0 , 0 , \"OmniVisi\" , \"UltraPixel2\" } , { 5664912 , 2688 , 1520 , 0 , 0 , 0 , 0 , 1 , 0x61 , 0 , 0 , \"OmniVisi\" , \"4688\" } , { 5664912 , 2688 , 1520 , 0 , 0 , 0 , 0 , 1 , 0x61 , 0 , 0 , \"OmniVisi\" , \"4688\" } , { 5364240 , 2688 , 1520 , 0 , 0 , 0 , 0 , 1 , 0x61 , 0 , 0 , \"OmniVisi\" , \"4688\" } , { 6299648 , 2592 , 1944 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"OmniVisi\" , \"OV5648\" } , { 6721536 , 2592 , 1944 , 0 , 0 , 0 , 0 , 0 , 0x16 , 0 , 0 , \"OmniVisi\" , \"OV56482\" } , { 6746112 , 2592 , 1944 , 0 , 0 , 0 , 0 , 0 , 0x16 , 0 , 0 , \"HTC\" , \"OneSV\" } , { 9631728 , 2532 , 1902 , 0 , 0 , 0 , 0 , 96 , 0x61 , 0 , 0 , \"Sony\" , \"5mp\" } , { 9830400 , 2560 , 1920 , 0 , 0 , 0 , 0 , 96 , 0x61 , 0 , 0 , \"NGM\" , \"ForwardArt\" } , { 10186752 , 3264 , 2448 , 0 , 0 , 0 , 0 , 1 , 0x94 , 0 , 0 , \"Sony\" , \"IMX219-mipi<S2SV_blank>8mp\" } , { 10223360 , 2608 , 1944 , 0 , 0 , 0 , 0 , 96 , 0x16 , 0 , 0 , \"Sony\" , \"IMX\" } , { 10782464 , 3282 , 2448 , 0 , 0 , 0 , 0 , 0 , 0x16 , 0 , 0 , \"HTC\" , \"MyTouch4GSlide\" } , { 10788864 , 3282 , 2448 , 0 , 0 , 0 , 0 , 0 , 0x16 , 0 , 0 , \"Xperia\" , \"L\" } , { 15967488 , 3264 , 2446 , 0 , 0 , 0 , 0 , 96 , 0x16 , 0 , 0 , \"OmniVison\" , \"OV8850\" } , { 16224256 , 4208 , 3082 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"LG\" , \"G3MipiL\" } , { 16424960 , 4208 , 3120 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"IMX135\" , \"MipiL\" } , { 17326080 , 4164 , 3120 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"LG\" , \"G3LQCom\" } , { 17522688 , 4212 , 3120 , 0 , 0 , 0 , 0 , 0 , 0x16 , 0 , 0 , \"Sony\" , \"IMX135-QCOM\" } , { 19906560 , 4608 , 3456 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"Gione\" , \"E7mipi\" } , { 19976192 , 5312 , 2988 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"LG\" , \"G4\" } , { 20389888 , 4632 , 3480 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"Xiaomi\" , \"RedmiNote3Pro\" } , { 20500480 , 4656 , 3496 , 0 , 0 , 0 , 0 , 1 , 0x94 , 0 , 0 , \"Sony\" , \"IMX298-mipi<S2SV_blank>16mp\" } , { 21233664 , 4608 , 3456 , 0 , 0 , 0 , 0 , 1 , 0x16 , 0 , 0 , \"Gione\" , \"E7qcom\" } , { 26023936 , 4192 , 3104 , 0 , 0 , 0 , 0 , 96 , 0x94 , 0 , 0 , \"THL\" , \"5000\" } , { 26257920 , 4208 , 3120 , 0 , 0 , 0 , 0 , 96 , 0x94 , 0 , 0 , \"Sony\" , \"IMX214\" } , { 26357760 , 4224 , 3120 , 0 , 0 , 0 , 0 , 96 , 0x61 , 0 , 0 , \"OV\" , \"13860\" } , { 41312256 , 5248 , 3936 , 0 , 0 , 0 , 0 , 96 , 0x61 , 0 , 0 , \"Meizu\" , \"MX4\" } , { 42923008 , 5344 , 4016 , 0 , 0 , 0 , 0 , 96 , 0x61 , 0 , 0 , \"Sony\" , \"IMX230\" } , { 20137344 , 3664 , 2748 , 0 , 0 , 0 , 0 , 0x40 , 0x49 , 0 , 0 , \"Aptina\" , \"MT9J003\" , 0xffff } , { 2868726 , 1384 , 1036 , 0 , 0 , 0 , 0 , 64 , 0x49 , 0 , 8 , \"Baumer\" , \"TXG14\" , 1078 } , { 5298000 , 2400 , 1766 , 12 , 12 , 44 , 2 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>SD300\" } , { 6553440 , 2664 , 1968 , 4 , 4 , 44 , 4 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A460\" } , { 6573120 , 2672 , 1968 , 12 , 8 , 44 , 0 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A610\" } , { 6653280 , 2672 , 1992 , 10 , 6 , 42 , 2 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A530\" } , { 7710960 , 2888 , 2136 , 44 , 8 , 4 , 0 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>S3<S2SV_blank>IS\" } , { 9219600 , 3152 , 2340 , 36 , 12 , 4 , 0 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A620\" } , { 9243240 , 3152 , 2346 , 12 , 7 , 44 , 13 , 40 , 0x49 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A470\" } , { 10341600 , 3336 , 2480 , 6 , 5 , 32 , 3 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A720<S2SV_blank>IS\" } , { 10383120 , 3344 , 2484 , 12 , 6 , 44 , 6 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A630\" } , { 12945240 , 3736 , 2772 , 12 , 6 , 52 , 6 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A640\" } , { 15636240 , 4104 , 3048 , 48 , 12 , 24 , 12 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A650\" } , { 15467760 , 3720 , 2772 , 6 , 12 , 30 , 0 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>SX110<S2SV_blank>IS\" } , { 15534576 , 3728 , 2778 , 12 , 9 , 44 , 9 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>SX120<S2SV_blank>IS\" } , { 18653760 , 4080 , 3048 , 24 , 12 , 24 , 12 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>SX20<S2SV_blank>IS\" } , { 18763488 , 4104 , 3048 , 10 , 22 , 82 , 22 , 8 , 0x49 , 0 , 0 , \"Canon\" , \"PowerShot<S2SV_blank>D10\" } , { 19131120 , 4168 , 3060 , 92 , 16 , 4 , 1 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>SX220<S2SV_blank>HS\" } , { 21936096 , 4464 , 3276 , 25 , 10 , 73 , 12 , 40 , 0x16 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>SX30<S2SV_blank>IS\" } , { 24724224 , 4704 , 3504 , 8 , 16 , 56 , 8 , 40 , 0x49 , 0 , 2 , \"Canon\" , \"PowerShot<S2SV_blank>A3300<S2SV_blank>IS\" } , { 30858240 , 5248 , 3920 , 8 , 16 , 56 , 16 , 40 , 0x94 , 0 , 2 , \"Canon\" , \"IXUS<S2SV_blank>160\" } , { 1976352 , 1632 , 1211 , 0 , 2 , 0 , 1 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"QV-2000UX\" } , { 3217760 , 2080 , 1547 , 0 , 0 , 10 , 1 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"QV-3*00EX\" } , { 6218368 , 2585 , 1924 , 0 , 0 , 9 , 0 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"QV-5700\" } , { 7816704 , 2867 , 2181 , 0 , 0 , 34 , 36 , 0 , 0x16 , 0 , 1 , \"Casio\" , \"EX-Z60\" } , { 2937856 , 1621 , 1208 , 0 , 0 , 1 , 0 , 0 , 0x94 , 7 , 13 , \"Casio\" , \"EX-S20\" } , { 4948608 , 2090 , 1578 , 0 , 0 , 32 , 34 , 0 , 0x94 , 7 , 1 , \"Casio\" , \"EX-S100\" } , { 6054400 , 2346 , 1720 , 2 , 0 , 32 , 0 , 0 , 0x94 , 7 , 1 , \"Casio\" , \"QV-R41\" } , { 7426656 , 2568 , 1928 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"EX-P505\" } , { 7530816 , 2602 , 1929 , 0 , 0 , 22 , 0 , 0 , 0x94 , 7 , 1 , \"Casio\" , \"QV-R51\" } , { 7542528 , 2602 , 1932 , 0 , 0 , 32 , 0 , 0 , 0x94 , 7 , 1 , \"Casio\" , \"EX-Z50\" } , { 7562048 , 2602 , 1937 , 0 , 0 , 25 , 0 , 0 , 0x16 , 7 , 1 , \"Casio\" , \"EX-Z500\" } , { 7753344 , 2602 , 1986 , 0 , 0 , 32 , 26 , 0 , 0x94 , 7 , 1 , \"Casio\" , \"EX-Z55\" } , { 9313536 , 2858 , 2172 , 0 , 0 , 14 , 30 , 0 , 0x94 , 7 , 1 , \"Casio\" , \"EX-P600\" } , { 10834368 , 3114 , 2319 , 0 , 0 , 27 , 0 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"EX-Z750\" } , { 10843712 , 3114 , 2321 , 0 , 0 , 25 , 0 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"EX-Z75\" } , { 10979200 , 3114 , 2350 , 0 , 0 , 32 , 32 , 0 , 0x94 , 7 , 1 , \"Casio\" , \"EX-P700\" } , { 12310144 , 3285 , 2498 , 0 , 0 , 6 , 30 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"EX-Z850\" } , { 12489984 , 3328 , 2502 , 0 , 0 , 47 , 35 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"EX-Z8\" } , { 15499264 , 3754 , 2752 , 0 , 0 , 82 , 0 , 0 , 0x94 , 0 , 1 , \"Casio\" , \"EX-Z1050\" } , { 18702336 , 4096 , 3044 , 0 , 0 , 24 , 0 , 80 , 0x94 , 7 , 1 , \"Casio\" , \"EX-ZR100\" } , { 7684000 , 2260 , 1700 , 0 , 0 , 0 , 0 , 13 , 0x94 , 0 , 1 , \"Casio\" , \"QV-4000\" } , { 787456 , 1024 , 769 , 0 , 1 , 0 , 0 , 0 , 0x49 , 0 , 0 , \"Creative\" , \"PC-CAM<S2SV_blank>600\" } , { 28829184 , 4384 , 3288 , 0 , 0 , 0 , 0 , 36 , 0x61 , 0 , 0 , \"DJI\" } , { 15151104 , 4608 , 3288 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"Matrix\" } , { 3840000 , 1600 , 1200 , 0 , 0 , 0 , 0 , 65 , 0x49 , 0 , 0 , \"Foculus\" , \"531C\" } , { 307200 , 640 , 480 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"Generic\" } , { 62464 , 256 , 244 , 1 , 1 , 6 , 1 , 0 , 0x8d , 0 , 0 , \"Kodak\" , \"DC20\" } , { 124928 , 512 , 244 , 1 , 1 , 10 , 1 , 0 , 0x8d , 0 , 0 , \"Kodak\" , \"DC20\" } , { 1652736 , 1536 , 1076 , 0 , 52 , 0 , 0 , 0 , 0x61 , 0 , 0 , \"Kodak\" , \"DCS200\" } , { 4159302 , 2338 , 1779 , 1 , 33 , 1 , 2 , 0 , 0x94 , 0 , 0 , \"Kodak\" , \"C330\" } , { 4162462 , 2338 , 1779 , 1 , 33 , 1 , 2 , 0 , 0x94 , 0 , 0 , \"Kodak\" , \"C330\" , 3160 } , { 2247168 , 1232 , 912 , 0 , 0 , 16 , 0 , 0 , 0x00 , 0 , 0 , \"Kodak\" , \"C330\" } , { 3370752 , 1232 , 912 , 0 , 0 , 16 , 0 , 0 , 0x00 , 0 , 0 , \"Kodak\" , \"C330\" } , { 6163328 , 2864 , 2152 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"Kodak\" , \"C603\" } , { 6166488 , 2864 , 2152 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 0 , \"Kodak\" , \"C603\" , 3160 } , { 460800 , 640 , 480 , 0 , 0 , 0 , 0 , 0 , 0x00 , 0 , 0 , \"Kodak\" , \"C603\" } , { 9116448 , 2848 , 2134 , 0 , 0 , 0 , 0 , 0 , 0x00 , 0 , 0 , \"Kodak\" , \"C603\" } , { 12241200 , 4040 , 3030 , 2 , 0 , 0 , 13 , 0 , 0x49 , 0 , 0 , \"Kodak\" , \"12MP\" } , { 12272756 , 4040 , 3030 , 2 , 0 , 0 , 13 , 0 , 0x49 , 0 , 0 , \"Kodak\" , \"12MP\" , 31556 } , { 18000000 , 4000 , 3000 , 0 , 0 , 0 , 0 , 0 , 0x00 , 0 , 0 , \"Kodak\" , \"12MP\" } , { 614400 , 640 , 480 , 0 , 3 , 0 , 0 , 64 , 0x94 , 0 , 0 , \"Kodak\" , \"KAI-0340\" } , { 15360000 , 3200 , 2400 , 0 , 0 , 0 , 0 , 96 , 0x16 , 0 , 0 , \"Lenovo\" , \"A820\" } , { 3884928 , 1608 , 1207 , 0 , 0 , 0 , 0 , 96 , 0x16 , 0 , 0 , \"Micron\" , \"2010\" , 3212 } , { 1138688 , 1534 , 986 , 0 , 0 , 0 , 0 , 0 , 0x61 , 0 , 0 , \"Minolta\" , \"RD175\" , 513 } , { 1581060 , 1305 , 969 , 0 , 0 , 18 , 6 , 6 , 0x1e , 4 , 1 , \"Nikon\" , \"E900\" } , { 2465792 , 1638 , 1204 , 0 , 0 , 22 , 1 , 6 , 0x4b , 5 , 1 , \"Nikon\" , \"E950\" } , { 2940928 , 1616 , 1213 , 0 , 0 , 0 , 7 , 30 , 0x94 , 0 , 1 , \"Nikon\" , \"E2100\" } , { 4771840 , 2064 , 1541 , 0 , 0 , 0 , 1 , 6 , 0xe1 , 0 , 1 , \"Nikon\" , \"E990\" } , { 4775936 , 2064 , 1542 , 0 , 0 , 0 , 0 , 30 , 0x94 , 0 , 1 , \"Nikon\" , \"E3700\" } , { 5865472 , 2288 , 1709 , 0 , 0 , 0 , 1 , 6 , 0xb4 , 0 , 1 , \"Nikon\" , \"E4500\" } , { 5869568 , 2288 , 1710 , 0 , 0 , 0 , 0 , 6 , 0x16 , 0 , 1 , \"Nikon\" , \"E4300\" } , { 7438336 , 2576 , 1925 , 0 , 0 , 0 , 1 , 6 , 0xb4 , 0 , 1 , \"Nikon\" , \"E5000\" } , { 8998912 , 2832 , 2118 , 0 , 0 , 0 , 0 , 30 , 0x94 , 7 , 1 , \"Nikon\" , \"COOLPIX<S2SV_blank>S6\" } , { 5939200 , 2304 , 1718 , 0 , 0 , 0 , 0 , 30 , 0x16 , 0 , 0 , \"Olympus\" , \"C770UZ\" } , { 3178560 , 2064 , 1540 , 0 , 0 , 0 , 0 , 0 , 0x94 , 0 , 1 , \"Pentax\" , \"Optio<S2SV_blank>S\" } , { 4841984 , 2090 , 1544 , 0 , 0 , 22 , 0 , 0 , 0x94 , 7 , 1 , \"Pentax\" , \"Optio<S2SV_blank>S\" } , { 6114240 , 2346 , 1737 , 0 , 0 , 22 , 0 , 0 , 0x94 , 7 , 1 , \"Pentax\" , \"Optio<S2SV_blank>S4\" } , { 10702848 , 3072 , 2322 , 0 , 0 , 0 , 21 , 30 , 0x94 , 0 , 1 , \"Pentax\" , \"Optio<S2SV_blank>750Z\" } , { 4147200 , 1920 , 1080 , 0 , 0 , 0 , 0 , 0 , 0x49 , 0 , 0 , \"Photron\" , \"BC2-HD\" } , { 4151666 , 1920 , 1080 , 0 , 0 , 0 , 0 , 0 , 0x49 , 0 , 0 , \"Photron\" , \"BC2-HD\" , 8 } , { 13248000 , 2208 , 3000 , 0 , 0 , 0 , 0 , 13 , 0x61 , 0 , 0 , \"Pixelink\" , \"A782\" } , { 6291456 , 2048 , 1536 , 0 , 0 , 0 , 0 , 96 , 0x61 , 0 , 0 , \"RoverShot\" , \"3320AF\" } , { 311696 , 644 , 484 , 0 , 0 , 0 , 0 , 0 , 0x16 , 0 , 8 , \"ST<S2SV_blank>Micro\" , \"STV680<S2SV_blank>VGA\" } , { 16098048 , 3288 , 2448 , 0 , 0 , 24 , 0 , 9 , 0x94 , 0 , 1 , \"Samsung\" , \"S85\" } , { 16215552 , 3312 , 2448 , 0 , 0 , 48 , 0 , 9 , 0x94 , 0 , 1 , \"Samsung\" , \"S85\" } , { 20487168 , 3648 , 2808 , 0 , 0 , 0 , 0 , 13 , 0x94 , 5 , 1 , \"Samsung\" , \"WB550\" } , { 24000000 , 4000 , 3000 , 0 , 0 , 0 , 0 , 13 , 0x94 , 5 , 1 , \"Samsung\" , \"WB550\" } , { 12582980 , 3072 , 2048 , 0 , 0 , 0 , 0 , 33 , 0x61 , 0 , 0 , \"Sinar\" , \"\" , 68 } , { 33292868 , 4080 , 4080 , 0 , 0 , 0 , 0 , 33 , 0x61 , 0 , 0 , \"Sinar\" , \"\" , 68 } , { 44390468 , 4080 , 5440 , 0 , 0 , 0 , 0 , 33 , 0x61 , 0 , 0 , \"Sinar\" , \"\" , 68 } , { 1409024 , 1376 , 1024 , 0 , 0 , 1 , 0 , 0 , 0x49 , 0 , 0 , \"Sony\" , \"XCD-SX910CR\" } , { 2818048 , 1376 , 1024 , 0 , 0 , 1 , 0 , 97 , 0x49 , 0 , 0 , \"Sony\" , \"XCD-SX910CR\" } , } ; # ifdef LIBRAW_LIBRARY_BUILD libraw_custom_camera_t table [ 64 + sizeof ( const_table ) / sizeof ( const_table [ 0 ] ) ] ; # endif static const char * corp [ ] = { \"AgfaPhoto\" , \"Canon\" , \"Casio\" , \"Epson\" , \"Fujifilm\" , \"Mamiya\" , \"Minolta\" , \"Motorola\" , \"Kodak\" , \"Konica\" , \"Leica\" , \"Nikon\" , \"Nokia\" , \"Olympus\" , \"Pentax\" , \"Phase<S2SV_blank>One\" , \"Ricoh\" , \"Samsung\" , \"Sigma\" , \"Sinar\" , \"Sony\" } ; # ifdef LIBRAW_LIBRARY_BUILD char head [ 64 ] , * cp ; # else char head [ 32 ] , * cp ; # endif int hlen , flen , fsize , zero_fsize = 1 , i , c ; struct jhead jh ; # ifdef LIBRAW_LIBRARY_BUILD unsigned camera_count = parse_custom_cameras ( 64 , table , imgdata . params . custom_camera_strings ) ; for ( int q = 0 ; q < sizeof ( const_table ) / sizeof ( const_table [ 0 ] ) ; q ++ ) memmove ( & table [ q + camera_count ] , & const_table [ q ] , sizeof ( const_table [ 0 ] ) ) ; camera_count += sizeof ( const_table ) / sizeof ( const_table [ 0 ] ) ; # endif tiff_flip = flip = filters = UINT_MAX ; raw_height = raw_width = fuji_width = fuji_layout = cr2_slice [ 0 ] = 0 ; maximum = height = width = top_margin = left_margin = 0 ; cdesc [ 0 ] = desc [ 0 ] = artist [ 0 ] = make [ 0 ] = model [ 0 ] = model2 [ 0 ] = 0 ; iso_speed = shutter = aperture = focal_len = unique_id = 0 ; tiff_nifds = 0 ; memset ( tiff_ifd , 0 , sizeof tiff_ifd ) ; # ifdef LIBRAW_LIBRARY_BUILD imgdata . other . CameraTemperature = imgdata . other . SensorTemperature = imgdata . other . SensorTemperature2 = imgdata . other . LensTemperature = imgdata . other . AmbientTemperature = imgdata . other . BatteryTemperature = imgdata . other . exifAmbientTemperature = - 1000.0f ; for ( i = 0 ; i < LIBRAW_IFD_MAXCOUNT ; i ++ ) { tiff_ifd [ i ] . dng_color [ 0 ] . illuminant = tiff_ifd [ i ] . dng_color [ 1 ] . illuminant = 0xffff ; for ( int c = 0 ; c < 4 ; c ++ ) tiff_ifd [ i ] . dng_levels . analogbalance [ c ] = 1.0f ; } # endif memset ( gpsdata , 0 , sizeof gpsdata ) ; memset ( cblack , 0 , sizeof cblack ) ; memset ( white , 0 , sizeof white ) ; memset ( mask , 0 , sizeof mask ) ; thumb_offset = thumb_length = thumb_width = thumb_height = 0 ; load_raw = thumb_load_raw = 0 ; write_thumb = & CLASS jpeg_thumb ; data_offset = meta_offset = meta_length = tiff_bps = tiff_compress = 0 ; kodak_cbpp = zero_after_ff = dng_version = load_flags = 0 ; timestamp = shot_order = tiff_samples = black = is_foveon = 0 ; mix_green = profile_length = data_error = zero_is_bad = 0 ; pixel_aspect = is_raw = raw_color = 1 ; tile_width = tile_length = 0 ; for ( i = 0 ; i < 4 ; i ++ ) { cam_mul [ i ] = i == 1 ; pre_mul [ i ] = i < 3 ; FORC3 cmatrix [ c ] [ i ] = 0 ; FORC3 rgb_cam [ c ] [ i ] = c == i ; } colors = 3 ; for ( i = 0 ; i < 0x10000 ; i ++ ) curve [ i ] = i ; order = get2 ( ) ; hlen = get4 ( ) ; fseek ( ifp , 0 , SEEK_SET ) ; # ifdef LIBRAW_LIBRARY_BUILD fread ( head , 1 , 64 , ifp ) ; libraw_internal_data . unpacker_data . lenRAFData = libraw_internal_data . unpacker_data . posRAFData = 0 ; # else fread ( head , 1 , 32 , ifp ) ; # endif fseek ( ifp , 0 , SEEK_END ) ; flen = fsize = ftell ( ifp ) ; if ( ( cp = ( char * ) memmem ( head , 32 , ( char * ) \"MMMM\" , 4 ) ) || ( cp = ( char * ) memmem ( head , 32 , ( char * ) \"IIII\" , 4 ) ) ) { parse_phase_one ( cp - head ) ; if ( cp - head && parse_tiff ( 0 ) ) apply_tiff ( ) ; } else if ( order == 0x4949 || order == 0x4d4d ) { if ( ! memcmp ( head + 6 , \"HEAPCCDR\" , 8 ) ) { data_offset = hlen ; # ifdef LIBRAW_LIBRARY_BUILD imgdata . lens . makernotes . CameraMount = LIBRAW_MOUNT_FixedLens ; imgdata . lens . makernotes . LensMount = LIBRAW_MOUNT_FixedLens ; # endif parse_ciff ( hlen , flen - hlen , 0 ) ; load_raw = & CLASS canon_load_raw ; } else if ( parse_tiff ( 0 ) ) apply_tiff ( ) ; } else if ( ! memcmp ( head , \"\\\\xff\\\\xd8\\\\xff\\\\xe1\" , 4 ) && ! memcmp ( head + 6 , \"Exif\" , 4 ) ) { fseek ( ifp , 4 , SEEK_SET ) ; data_offset = 4 + get2 ( ) ; fseek ( ifp , data_offset , SEEK_SET ) ; if ( fgetc ( ifp ) != 0xff ) parse_tiff ( 12 ) ; thumb_offset = 0 ; } else if ( ! memcmp ( head + 25 , \"ARECOYK\" , 7 ) ) { strcpy ( make , \"Contax\" ) ; strcpy ( model , \"N<S2SV_blank>Digital\" ) ; fseek ( ifp , 33 , SEEK_SET ) ; get_timestamp ( 1 ) ; fseek ( ifp , 52 , SEEK_SET ) ; switch ( get4 ( ) ) { case 7 : iso_speed = 25 ; break ; case 8 : iso_speed = 32 ; break ; case 9 : iso_speed = 40 ; break ; case 10 : iso_speed = 50 ; break ; case 11 : iso_speed = 64 ; break ; case 12 : iso_speed = 80 ; break ; case 13 : iso_speed = 100 ; break ; case 14 : iso_speed = 125 ; break ; case 15 : iso_speed = 160 ; break ; case 16 : iso_speed = 200 ; break ; case 17 : iso_speed = 250 ; break ; case 18 : iso_speed = 320 ; break ; case 19 : iso_speed = 400 ; break ; } shutter = powf64 ( 2.0f , ( ( ( float ) get4 ( ) ) / 8.0f ) ) / 16000.0f ; FORC4 cam_mul [ c ^ ( c >> 1 ) ] = get4 ( ) ; fseek ( ifp , 88 , SEEK_SET ) ; aperture = powf64 ( 2.0f , ( ( float ) get4 ( ) ) / 16.0f ) ; fseek ( ifp , 112 , SEEK_SET ) ; focal_len = get4 ( ) ; # ifdef LIBRAW_LIBRARY_BUILD fseek ( ifp , 104 , SEEK_SET ) ; imgdata . lens . makernotes . MaxAp4CurFocal = powf64 ( 2.0f , ( ( float ) get4 ( ) ) / 16.0f ) ; fseek ( ifp , 124 , SEEK_SET ) ; stmread ( imgdata . lens . makernotes . Lens , 32 , ifp ) ; imgdata . lens . makernotes . CameraMount = LIBRAW_MOUNT_Contax_N ; if ( imgdata . lens . makernotes . Lens [ 0 ] ) imgdata . lens . makernotes . LensMount = LIBRAW_MOUNT_Contax_N ; # endif } else if ( ! strcmp ( head , \"PXN\" ) ) { strcpy ( make , \"Logitech\" ) ; strcpy ( model , \"Fotoman<S2SV_blank>Pixtura\" ) ; } else if ( ! strcmp ( head , \"qktk\" ) ) { strcpy ( make , \"Apple\" ) ; strcpy ( model , \"QuickTake<S2SV_blank>100\" ) ; load_raw = & CLASS quicktake_100_load_raw ; } else if ( ! strcmp ( head , \"qktn\" ) ) { strcpy ( make , \"Apple\" ) ; strcpy ( model , \"QuickTake<S2SV_blank>150\" ) ; load_raw = & CLASS kodak_radc_load_raw ; } else if ( ! memcmp ( head , \"FUJIFILM\" , 8 ) ) { # ifdef LIBRAW_LIBRARY_BUILD strcpy ( model , head + 0x1c ) ; memcpy ( model2 , head + 0x3c , 4 ) ; model2 [ 4 ] = 0 ; # endif fseek ( ifp , 84 , SEEK_SET ) ; thumb_offset = get4 ( ) ; thumb_length = get4 ( ) ; fseek ( ifp , 92 , SEEK_SET ) ; parse_fuji ( get4 ( ) ) ; if ( thumb_offset > 120 ) { fseek ( ifp , 120 , SEEK_SET ) ; is_raw += ( i = get4 ( ) ) ? 1 : 0 ; if ( is_raw == 2 && shot_select ) parse_fuji ( i ) ; } load_raw = & CLASS unpacked_load_raw ; fseek ( ifp , 100 + 28 * ( shot_select > 0 ) , SEEK_SET ) ; parse_tiff ( data_offset = get4 ( ) ) ; parse_tiff ( thumb_offset + 12 ) ; apply_tiff ( ) ; } else if ( ! memcmp ( head , \"RIFF\" , 4 ) ) { fseek ( ifp , 0 , SEEK_SET ) ; parse_riff ( ) ; } else if ( ! memcmp ( head + 4 , \"ftypqt<S2SV_blank><S2SV_blank><S2SV_blank>\" , 9 ) ) { fseek ( ifp , 0 , SEEK_SET ) ; parse_qt ( fsize ) ; is_raw = 0 ; } else if ( ! memcmp ( head , \"\\\\0\\\\001\\\\0\\\\001\\\\0@\" , 6 ) ) { fseek ( ifp , 6 , SEEK_SET ) ; fread ( make , 1 , 8 , ifp ) ; fread ( model , 1 , 8 , ifp ) ; fread ( model2 , 1 , 16 , ifp ) ; data_offset = get2 ( ) ; get2 ( ) ; raw_width = get2 ( ) ; raw_height = get2 ( ) ; load_raw = & CLASS nokia_load_raw ; filters = 0x61616161 ; } else if ( ! memcmp ( head , \"NOKIARAW\" , 8 ) ) { strcpy ( make , \"NOKIA\" ) ; order = 0x4949 ; fseek ( ifp , 300 , SEEK_SET ) ; data_offset = get4 ( ) ; i = get4 ( ) ; width = get2 ( ) ; height = get2 ( ) ; # ifdef LIBRAW_LIBRARY_BUILD if ( width < 1 || width > 16000 || height < 1 || height > 16000 || i < ( width * height ) || i > ( 2 * width * height ) ) throw LIBRAW_EXCEPTION_IO_CORRUPT ; # endif switch ( tiff_bps = i * 8 / ( width * height ) ) { case 8 : load_raw = & CLASS eight_bit_load_raw ; break ; case 10 : load_raw = & CLASS nokia_load_raw ; } raw_height = height + ( top_margin = i / ( width * tiff_bps / 8 ) - height ) ; mask [ 0 ] [ 3 ] = 1 ; filters = 0x61616161 ; } else if ( ! memcmp ( head , \"ARRI\" , 4 ) ) { order = 0x4949 ; fseek ( ifp , 20 , SEEK_SET ) ; width = get4 ( ) ; height = get4 ( ) ; strcpy ( make , \"ARRI\" ) ; fseek ( ifp , 668 , SEEK_SET ) ; fread ( model , 1 , 64 , ifp ) ; data_offset = 4096 ; load_raw = & CLASS packed_load_raw ; load_flags = 88 ; filters = 0x61616161 ; } else if ( ! memcmp ( head , \"XPDS\" , 4 ) ) { order = 0x4949 ; fseek ( ifp , 0x800 , SEEK_SET ) ; fread ( make , 1 , 41 , ifp ) ; raw_height = get2 ( ) ; raw_width = get2 ( ) ; fseek ( ifp , 56 , SEEK_CUR ) ; fread ( model , 1 , 30 , ifp ) ; data_offset = 0x10000 ; load_raw = & CLASS canon_rmf_load_raw ; gamma_curve ( 0 , 12.25 , 1 , 1023 ) ; } else if ( ! memcmp ( head + 4 , \"RED1\" , 4 ) ) { strcpy ( make , \"Red\" ) ; strcpy ( model , \"One\" ) ; parse_redcine ( ) ; load_raw = & CLASS redcine_load_raw ; gamma_curve ( 1 / 2.4 , 12.92 , 1 , 4095 ) ; filters = 0x49494949 ; } else if ( ! memcmp ( head , \"DSC-Image\" , 9 ) ) parse_rollei ( ) ; else if ( ! memcmp ( head , \"PWAD\" , 4 ) ) parse_sinar_ia ( ) ; else if ( ! memcmp ( head , \"\\\\0MRM\" , 4 ) ) parse_minolta ( 0 ) ; else if ( ! memcmp ( head , \"FOVb\" , 4 ) ) { # ifdef LIBRAW_LIBRARY_BUILD parse_x3f ( ) ; # endif } else if ( ! memcmp ( head , \"CI\" , 2 ) ) parse_cine ( ) ; if ( make [ 0 ] == 0 ) # ifdef LIBRAW_LIBRARY_BUILD for ( zero_fsize = i = 0 ; i < camera_count ; i ++ ) # else for ( zero_fsize = i = 0 ; i < sizeof table / sizeof * table ; i ++ ) # endif if ( fsize == table [ i ] . fsize ) { strcpy ( make , table [ i ] . t_make ) ; # ifdef LIBRAW_LIBRARY_BUILD if ( ! strncmp ( make , \"Canon\" , 5 ) ) { imgdata . lens . makernotes . CameraMount = LIBRAW_MOUNT_FixedLens ; imgdata . lens . makernotes . LensMount = LIBRAW_MOUNT_FixedLens ; } # endif strcpy ( model , table [ i ] . t_model ) ; flip = table [ i ] . flags >> 2 ; zero_is_bad = table [ i ] . flags & 2 ; if ( table [ i ] . flags & 1 ) parse_external_jpeg ( ) ; data_offset = table [ i ] . offset == 0xffff ? 0 : table [ i ] . offset ; raw_width = table [ i ] . rw ; raw_height = table [ i ] . rh ; left_margin = table [ i ] . lm ; top_margin = table [ i ] . tm ; width = raw_width - left_margin - table [ i ] . rm ; height = raw_height - top_margin - table [ i ] . bm ; filters = 0x1010101 * table [ i ] . cf ; colors = 4 - ! ( ( filters & filters >> 1 ) & 0x5555 ) ; load_flags = table [ i ] . lf ; switch ( tiff_bps = ( fsize - data_offset ) * 8 / ( raw_width * raw_height ) ) { case 6 : load_raw = & CLASS minolta_rd175_load_raw ; break ; case 8 : load_raw = & CLASS eight_bit_load_raw ; break ; case 10 : if ( ( fsize - data_offset ) / raw_height * 3 >= raw_width * 4 ) { load_raw = & CLASS android_loose_load_raw ; break ; } else if ( load_flags & 1 ) { load_raw = & CLASS android_tight_load_raw ; break ; } case 12 : load_flags |= 128 ; load_raw = & CLASS packed_load_raw ; break ; case 16 : order = 0x4949 | 0x404 * ( load_flags & 1 ) ; tiff_bps -= load_flags >> 4 ; tiff_bps -= load_flags = load_flags >> 1 & 7 ; load_raw = table [ i ] . offset == 0xffff ? & CLASS unpacked_load_raw_reversed : & CLASS unpacked_load_raw ; } maximum = ( 1 << tiff_bps ) - ( 1 << table [ i ] . max ) ; break ; } if ( zero_fsize ) fsize = 0 ; if ( make [ 0 ] == 0 ) parse_smal ( 0 , flen ) ; if ( make [ 0 ] == 0 ) { parse_jpeg ( 0 ) ; fseek ( ifp , 0 , SEEK_END ) ; int sz = ftell ( ifp ) ; # ifdef LIBRAW_LIBRARY_BUILD if ( ! strncmp ( model , \"RP_imx219\" , 9 ) && sz >= 0x9cb600 && ! fseek ( ifp , - 0x9cb600 , SEEK_END ) && fread ( head , 1 , 0x20 , ifp ) && ! strncmp ( head , \"BRCM\" , 4 ) ) { strcpy ( make , \"Broadcom\" ) ; strcpy ( model , \"RPi<S2SV_blank>IMX219\" ) ; if ( raw_height > raw_width ) flip = 5 ; data_offset = ftell ( ifp ) + 0x8000 - 0x20 ; parse_broadcom ( ) ; black = 66 ; maximum = 0x3ff ; load_raw = & CLASS broadcom_load_raw ; thumb_offset = 0 ; thumb_length = sz - 0x9cb600 - 1 ; } else if ( ! ( strncmp ( model , \"ov5647\" , 6 ) && strncmp ( model , \"RP_OV5647\" , 9 ) ) && sz >= 0x61b800 && ! fseek ( ifp , - 0x61b800 , SEEK_END ) && fread ( head , 1 , 0x20 , ifp ) && ! strncmp ( head , \"BRCM\" , 4 ) ) { strcpy ( make , \"Broadcom\" ) ; if ( ! strncmp ( model , \"ov5647\" , 6 ) ) strcpy ( model , \"RPi<S2SV_blank>OV5647<S2SV_blank>v.1\" ) ; else strcpy ( model , \"RPi<S2SV_blank>OV5647<S2SV_blank>v.2\" ) ; if ( raw_height > raw_width ) flip = 5 ; data_offset = ftell ( ifp ) + 0x8000 - 0x20 ; parse_broadcom ( ) ; black = 16 ; maximum = 0x3ff ; load_raw = & CLASS broadcom_load_raw ; thumb_offset = 0 ; thumb_length = sz - 0x61b800 - 1 ; # else if ( ! ( strncmp ( model , \"ov\" , 2 ) && strncmp ( model , \"RP_OV\" , 5 ) ) && sz >= 6404096 && ! fseek ( ifp , - 6404096 , SEEK_END ) && fread ( head , 1 , 32 , ifp ) && ! strcmp ( head , \"BRCMn\" ) ) { strcpy ( make , \"OmniVision\" ) ; data_offset = ftell ( ifp ) + 0x8000 - 32 ; width = raw_width ; raw_width = 2611 ; load_raw = & CLASS nokia_load_raw ; filters = 0x16161616 ; # endif } else is_raw = 0 ; } # ifdef LIBRAW_LIBRARY_BUILD desc [ 511 ] = artist [ 63 ] = make [ 63 ] = model [ 63 ] = model2 [ 63 ] = 0 ; # endif for ( i = 0 ; i < sizeof corp / sizeof * corp ; i ++ ) if ( strcasestr ( make , corp [ i ] ) ) strcpy ( make , corp [ i ] ) ; if ( ( ! strncmp ( make , \"Kodak\" , 5 ) || ! strncmp ( make , \"Leica\" , 5 ) ) && ( ( cp = strcasestr ( model , \"<S2SV_blank>DIGITAL<S2SV_blank>CAMERA\" ) ) || ( cp = strstr ( model , \"FILE<S2SV_blank>VERSION\" ) ) ) ) * cp = 0 ; if ( ! strncasecmp ( model , \"PENTAX\" , 6 ) ) strcpy ( make , \"Pentax\" ) ; # ifdef LIBRAW_LIBRARY_BUILD remove_trailing_spaces ( make , sizeof ( make ) ) ; remove_trailing_spaces ( model , sizeof ( model ) ) ; # else cp = make + strlen ( make ) ; while ( * -- cp == '<S2SV_blank>' ) * cp = 0 ; cp = model + strlen ( model ) ; while ( * -- cp == '<S2SV_blank>' ) * cp = 0 ; # endif i = strbuflen ( make ) ; if ( ! strncasecmp ( model , make , i ) && model [ i ++ ] == '<S2SV_blank>' ) memmove ( model , model + i , 64 - i ) ; if ( ! strncmp ( model , \"FinePix<S2SV_blank>\" , 8 ) ) strcpy ( model , model + 8 ) ; if ( ! strncmp ( model , \"Digital<S2SV_blank>Camera<S2SV_blank>\" , 15 ) ) strcpy ( model , model + 15 ) ; desc [ 511 ] = artist [ 63 ] = make [ 63 ] = model [ 63 ] = model2 [ 63 ] = 0 ; if ( ! is_raw ) goto notraw ; if ( ! height ) height = raw_height ; if ( ! width ) width = raw_width ; if ( height == 2624 && width == 3936 ) { height = 2616 ; width = 3896 ; } if ( height == 3136 && width == 4864 ) { height = 3124 ; width = 4688 ; filters = 0x16161616 ; } if ( width == 4352 && ( ! strcmp ( model , \"K-r\" ) || ! strcmp ( model , \"K-x\" ) ) ) { width = 4309 ; filters = 0x16161616 ; } if ( width >= 4960 && ! strncmp ( model , \"K-5\" , 3 ) ) { left_margin = 10 ; width = 4950 ; filters = 0x16161616 ; } if ( width == 6080 && ! strcmp ( model , \"K-70\" ) ) { height = 4016 ; top_margin = 32 ; width = 6020 ; left_margin = 60 ; } if ( width == 4736 && ! strcmp ( model , \"K-7\" ) ) { height = 3122 ; width = 4684 ; filters = 0x16161616 ; top_margin = 2 ; } if ( width == 6080 && ! strcmp ( model , \"K-3<S2SV_blank>II\" ) ) { left_margin = 4 ; width = 6040 ; } if ( width == 6112 && ! strcmp ( model , \"KP\" ) ) { left_margin = 54 ; top_margin = 28 ; width = 6028 ; height = raw_height - top_margin ; } if ( width == 6080 && ! strcmp ( model , \"K-3\" ) ) { left_margin = 4 ; width = 6040 ; } if ( width == 7424 && ! strcmp ( model , \"645D\" ) ) { height = 5502 ; width = 7328 ; filters = 0x61616161 ; top_margin = 29 ; left_margin = 48 ; } if ( height == 3014 && width == 4096 ) width = 4014 ; if ( dng_version ) { if ( filters == UINT_MAX ) filters = 0 ; if ( filters ) is_raw *= tiff_samples ; else colors = tiff_samples ; switch ( tiff_compress ) { case 0 : case 1 : load_raw = & CLASS packed_dng_load_raw ; break ; case 7 : load_raw = & CLASS lossless_dng_load_raw ; break ; # ifdef LIBRAW_LIBRARY_BUILD case 8 : load_raw = & CLASS deflate_dng_load_raw ; break ; # endif case 34892 : load_raw = & CLASS lossy_dng_load_raw ; break ; default : load_raw = 0 ; } if ( ! strncmp ( make , \"Canon\" , 5 ) && unique_id ) { for ( i = 0 ; i < sizeof unique / sizeof * unique ; i ++ ) if ( unique_id == 0x80000000 + unique [ i ] . id ) { strcpy ( model , unique [ i ] . t_model ) ; break ; } } if ( ! strncasecmp ( make , \"Sony\" , 4 ) && unique_id ) { for ( i = 0 ; i < sizeof sonique / sizeof * sonique ; i ++ ) if ( unique_id == sonique [ i ] . id ) { strcpy ( model , sonique [ i ] . t_model ) ; break ; } } goto dng_skip ; } if ( ! strncmp ( make , \"Canon\" , 5 ) && ! fsize && tiff_bps != 15 ) { if ( ! load_raw ) load_raw = & CLASS lossless_jpeg_load_raw ; for ( i = 0 ; i < sizeof canon / sizeof * canon ; i ++ ) if ( raw_width == canon [ i ] [ 0 ] && raw_height == canon [ i ] [ 1 ] ) { width = raw_width - ( left_margin = canon [ i ] [ 2 ] ) ; height = raw_height - ( top_margin = canon [ i ] [ 3 ] ) ; width -= canon [ i ] [ 4 ] ; height -= canon [ i ] [ 5 ] ; mask [ 0 ] [ 1 ] = canon [ i ] [ 6 ] ; mask [ 0 ] [ 3 ] = - canon [ i ] [ 7 ] ; mask [ 1 ] [ 1 ] = canon [ i ] [ 8 ] ; mask [ 1 ] [ 3 ] = - canon [ i ] [ 9 ] ; if ( canon [ i ] [ 10 ] ) filters = canon [ i ] [ 10 ] * 0x01010101 ; } if ( ( unique_id | 0x20000 ) == 0x2720000 ) { left_margin = 8 ; top_margin = 16 ; } } if ( ! strncmp ( make , \"Canon\" , 5 ) && unique_id ) { for ( i = 0 ; i < sizeof unique / sizeof * unique ; i ++ ) if ( unique_id == 0x80000000 + unique [ i ] . id ) { adobe_coeff ( \"Canon\" , unique [ i ] . t_model ) ; strcpy ( model , unique [ i ] . t_model ) ; } } if ( ! strncasecmp ( make , \"Sony\" , 4 ) && unique_id ) { for ( i = 0 ; i < sizeof sonique / sizeof * sonique ; i ++ ) if ( unique_id == sonique [ i ] . id ) { adobe_coeff ( \"Sony\" , sonique [ i ] . t_model ) ; strcpy ( model , sonique [ i ] . t_model ) ; } } if ( ! strncmp ( make , \"Nikon\" , 5 ) ) { if ( ! load_raw ) load_raw = & CLASS packed_load_raw ; if ( model [ 0 ] == 'E' ) load_flags |= ! data_offset << 2 | 2 ; } if ( ! strcmp ( model , \"KAI-0340\" ) && find_green ( 16 , 16 , 3840 , 5120 ) < 25 ) { height = 480 ; top_margin = filters = 0 ; strcpy ( model , \"C603\" ) ; } # ifndef LIBRAW_LIBRARY_BUILD if ( ! strcmp ( make , \"Sony\" ) && raw_width > 3888 && ! black && ! cblack [ 0 ] ) black = 128 << ( tiff_bps - 12 ) ; # else if ( ! strcmp ( make , \"Sony\" ) && raw_width > 3888 && ! black && ! cblack [ 0 ] ) black = ( load_raw == & LibRaw : : sony_arw2_load_raw ) ? 512 : ( 128 << ( tiff_bps - 12 ) ) ; # endif if ( is_foveon ) { if ( height * 2 < width ) pixel_aspect = 0.5 ; if ( height > width ) pixel_aspect = 2 ; filters = 0 ; } else if ( ! strncmp ( make , \"Pentax\" , 6 ) && ! strncmp ( model , \"K-1\" , 3 ) ) { top_margin = 18 ; height = raw_height - top_margin ; if ( raw_width == 7392 ) { left_margin = 6 ; width = 7376 ; } } else if ( ! strncmp ( make , \"Canon\" , 5 ) && tiff_bps == 15 ) { switch ( width ) { case 3344 : width -= 66 ; case 3872 : width -= 6 ; } if ( height > width ) { SWAP ( height , width ) ; SWAP ( raw_height , raw_width ) ; } if ( width == 7200 && height == 3888 ) { raw_width = width = 6480 ; raw_height = height = 4320 ; } filters = 0 ; tiff_samples = colors = 3 ; load_raw = & CLASS canon_sraw_load_raw ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>600\" ) ) { height = 613 ; width = 854 ; raw_width = 896 ; colors = 4 ; filters = 0xe1e4e1e4 ; load_raw = & CLASS canon_600_load_raw ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>A5\" ) || ! strcmp ( model , \"PowerShot<S2SV_blank>A5<S2SV_blank>Zoom\" ) ) { height = 773 ; width = 960 ; raw_width = 992 ; pixel_aspect = 256 / 235.0 ; filters = 0x1e4e1e4e ; goto canon_a5 ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>A50\" ) ) { height = 968 ; width = 1290 ; raw_width = 1320 ; filters = 0x1b4e4b1e ; goto canon_a5 ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>Pro70\" ) ) { height = 1024 ; width = 1552 ; filters = 0x1e4b4e1b ; canon_a5 : colors = 4 ; tiff_bps = 10 ; load_raw = & CLASS packed_load_raw ; load_flags = 40 ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>Pro90<S2SV_blank>IS\" ) || ! strcmp ( model , \"PowerShot<S2SV_blank>G1\" ) ) { colors = 4 ; filters = 0xb4b4b4b4 ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>A610\" ) ) { if ( canon_s2is ( ) ) strcpy ( model + 10 , \"S2<S2SV_blank>IS\" ) ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>SX220<S2SV_blank>HS\" ) ) { mask [ 1 ] [ 3 ] = - 4 ; top_margin = 16 ; left_margin = 92 ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>S120\" ) ) { raw_width = 4192 ; raw_height = 3062 ; width = 4022 ; height = 3016 ; mask [ 0 ] [ 0 ] = top_margin = 31 ; mask [ 0 ] [ 2 ] = top_margin + height ; left_margin = 120 ; mask [ 0 ] [ 1 ] = 23 ; mask [ 0 ] [ 3 ] = 72 ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>G16\" ) ) { mask [ 0 ] [ 0 ] = 0 ; mask [ 0 ] [ 2 ] = 80 ; mask [ 0 ] [ 1 ] = 0 ; mask [ 0 ] [ 3 ] = 16 ; top_margin = 29 ; left_margin = 120 ; width = raw_width - left_margin - 48 ; height = raw_height - top_margin - 14 ; } else if ( ! strcmp ( model , \"PowerShot<S2SV_blank>SX50<S2SV_blank>HS\" ) ) { top_margin = 17 ; } else if ( ! strcmp ( model , \"EOS<S2SV_blank>D2000C\" ) ) { filters = 0x61616161 ; if ( ! black ) black = curve [ 200 ] ; } else if ( ! strcmp ( model , \"D1\" ) ) { cam_mul [ 0 ] *= 256 / 527.0 ; cam_mul [ 2 ] *= 256 / 317.0 ; } else if ( ! strcmp ( model , \"D1X\" ) ) { width -= 4 ; pixel_aspect = 0.5 ; } else if ( ! strcmp ( model , \"D40X\" ) || ! strcmp ( model , \"D60\" ) || ! strcmp ( model , \"D80\" ) || ! strcmp ( model , \"D3000\" ) ) { height -= 3 ; width -= 4 ; } else if ( ! strcmp ( model , \"D3\" ) || ! strcmp ( model , \"D3S\" ) || ! strcmp ( model , \"D700\" ) ) { width -= 4 ; left_margin = 2 ; } else if ( ! strcmp ( model , \"D3100\" ) ) { width -= 28 ; left_margin = 6 ; } else if ( ! strcmp ( model , \"D5000\" ) || ! strcmp ( model , \"D90\" ) ) { width -= 42 ; } else if ( ! strcmp ( model , \"D5100\" ) || ! strcmp ( model , \"D7000\" ) || ! strcmp ( model , \"COOLPIX<S2SV_blank>A\" ) ) { width -= 44 ; } else if ( ! strcmp ( model , \"D3200\" ) || ! strncmp ( model , \"D6\" , 2 ) || ! strncmp ( model , \"D800\" , 4 ) ) { width -= 46 ; } else if ( ! strcmp ( model , \"D4\" ) || ! strcmp ( model , \"Df\" ) ) { width -= 52 ; left_margin = 2 ; } else if ( ! strcmp ( model , \"D500\" ) ) { } else if ( ! strncmp ( model , \"D40\" , 3 ) || ! strncmp ( model , \"D50\" , 3 ) || ! strncmp ( model , \"D70\" , 3 ) ) { width -- ; } else if ( ! strcmp ( model , \"D100\" ) ) { if ( load_flags ) raw_width = ( width += 3 ) + 3 ; } else if ( ! strcmp ( model , \"D200\" ) ) { left_margin = 1 ; width -= 4 ; filters = 0x94949494 ; } else if ( ! strncmp ( model , \"D2H\" , 3 ) ) { left_margin = 6 ; width -= 14 ; } else if ( ! strncmp ( model , \"D2X\" , 3 ) ) { if ( width == 3264 ) width -= 32 ; else width -= 8 ; } else if ( ! strncmp ( model , \"D300\" , 4 ) ) { width -= 32 ; } else if ( ! strncmp ( make , \"Nikon\" , 5 ) && raw_width == 4032 ) { if ( ! strcmp ( model , \"COOLPIX<S2SV_blank>P7700\" ) ) { adobe_coeff ( \"Nikon\" , \"COOLPIX<S2SV_blank>P7700\" ) ; maximum = 65504 ; load_flags = 0 ; } else if ( ! strcmp ( model , \"COOLPIX<S2SV_blank>P7800\" ) ) { adobe_coeff ( \"Nikon\" , \"COOLPIX<S2SV_blank>P7800\" ) ; maximum = 65504 ; load_flags = 0 ; } else if ( ! strcmp ( model , \"COOLPIX<S2SV_blank>P340\" ) ) load_flags = 0 ; } else if ( ! strncmp ( model , \"COOLPIX<S2SV_blank>P\" , 9 ) && raw_width != 4032 ) { load_flags = 24 ; filters = 0x94949494 ; if ( model [ 9 ] == '7' && ( iso_speed >= 400 || iso_speed == 0 ) && ! strstr ( software , \"V1.2\" ) ) black = 255 ; } else if ( ! strncmp ( model , \"COOLPIX<S2SV_blank>B700\" , 12 ) ) { load_flags = 24 ; black = 200 ; } else if ( ! strncmp ( model , \"1<S2SV_blank>\" , 2 ) ) { height -= 2 ; } else if ( fsize == 1581060 ) { simple_coeff ( 3 ) ; pre_mul [ 0 ] = 1.2085 ; pre_mul [ 1 ] = 1.0943 ; pre_mul [ 3 ] = 1.1103 ; } else if ( fsize == 3178560 ) { cam_mul [ 0 ] *= 4 ; cam_mul [ 2 ] *= 4 ; } else if ( fsize == 4771840 ) { if ( ! timestamp && nikon_e995 ( ) ) strcpy ( model , \"E995\" ) ; if ( strcmp ( model , \"E995\" ) ) { filters = 0xb4b4b4b4 ; simple_coeff ( 3 ) ; pre_mul [ 0 ] = 1.196 ; pre_mul [ 1 ] = 1.246 ; pre_mul [ 2 ] = 1.018 ; } } else if ( fsize == 2940928 ) { if ( ! timestamp && ! nikon_e2100 ( ) ) strcpy ( model , \"E2500\" ) ; if ( ! strcmp ( model , \"E2500\" ) ) { height -= 2 ; load_flags = 6 ; colors = 4 ; filters = 0x4b4b4b4b ; } } else if ( fsize == 4775936 ) { if ( ! timestamp ) nikon_3700 ( ) ; if ( model [ 0 ] == 'E' && atoi ( model + 1 ) < 3700 ) filters = 0x49494949 ; if ( ! strcmp ( model , \"Optio<S2SV_blank>33WR\" ) ) { flip = 1 ; filters = 0x16161616 ; } if ( make [ 0 ] == 'O' ) { i = find_green ( 12 , 32 , 1188864 , 3576832 ) ; c = find_green ( 12 , 32 , 2383920 , 2387016 ) ; if ( abs ( i ) < abs ( c ) ) { SWAP ( i , c ) ; load_flags = 24 ; } if ( i < 0 ) filters = 0x61616161 ; } } else if ( fsize == 5869568 ) { if ( ! timestamp && minolta_z2 ( ) ) { strcpy ( make , \"Minolta\" ) ; strcpy ( model , \"DiMAGE<S2SV_blank>Z2\" ) ; } load_flags = 6 + 24 * ( make [ 0 ] == 'M' ) ; } else if ( fsize == 6291456 ) { fseek ( ifp , 0x300000 , SEEK_SET ) ; if ( ( order = guess_byte_order ( 0x10000 ) ) == 0x4d4d ) { height -= ( top_margin = 16 ) ; width -= ( left_margin = 28 ) ; maximum = 0xf5c0 ; strcpy ( make , \"ISG\" ) ; model [ 0 ] = 0 ; } } else if ( ! strncmp ( make , \"Fujifilm\" , 8 ) ) { if ( ! strcmp ( model , \"X-A3\" ) || ! strcmp ( model , \"X-A10\" ) ) { left_margin = 0 ; top_margin = 0 ; width = raw_width ; height = raw_height ; } if ( ! strcmp ( model + 7 , \"S2Pro\" ) ) { strcpy ( model , \"S2Pro\" ) ; height = 2144 ; width = 2880 ; flip = 6 ; } else if ( load_raw != & CLASS packed_load_raw && strncmp ( model , \"X-\" , 2 ) ) maximum = ( is_raw == 2 && shot_select ) ? 0x2f00 : 0x3e00 ; top_margin = ( raw_height - height ) >> 2 << 1 ; left_margin = ( raw_width - width ) >> 2 << 1 ; if ( width == 2848 || width == 3664 ) filters = 0x16161616 ; if ( width == 4032 || width == 4952 ) left_margin = 0 ; if ( width == 3328 && ( width -= 66 ) ) left_margin = 34 ; if ( width == 4936 ) left_margin = 4 ; if ( width == 6032 ) left_margin = 0 ; if ( ! strcmp ( model , \"HS50EXR\" ) || ! strcmp ( model , \"F900EXR\" ) ) { width += 2 ; left_margin = 0 ; filters = 0x16161616 ; } if ( ! strcmp ( model , \"GFX<S2SV_blank>50S\" ) ) { left_margin = 0 ; top_margin = 0 ; } if ( ! strcmp ( model , \"S5500\" ) ) { height -= ( top_margin = 6 ) ; } if ( fuji_layout ) raw_width *= is_raw ; if ( filters == 9 ) FORC ( 36 ) ( ( char * ) xtrans ) [ c ] = xtrans_abs [ ( c / 6 + top_margin ) % 6 ] [ ( c + left_margin ) % 6 ] ; } else if ( ! strcmp ( model , \"KD-400Z\" ) ) { height = 1712 ; width = 2312 ; raw_width = 2336 ; goto konica_400z ; } else if ( ! strcmp ( model , \"KD-510Z\" ) ) { goto konica_510z ; } else if ( ! strncasecmp ( make , \"Minolta\" , 7 ) ) { if ( ! load_raw && ( maximum = 0xfff ) ) load_raw = & CLASS unpacked_load_raw ; if ( ! strncmp ( model , \"DiMAGE<S2SV_blank>A\" , 8 ) ) { if ( ! strcmp ( model , \"DiMAGE<S2SV_blank>A200\" ) ) filters = 0x49494949 ; tiff_bps = 12 ; load_raw = & CLASS packed_load_raw ; } else if ( ! strncmp ( model , \"ALPHA\" , 5 ) || ! strncmp ( model , \"DYNAX\" , 5 ) || ! strncmp ( model , \"MAXXUM\" , 6 ) ) { sprintf ( model + 20 , \"DYNAX<S2SV_blank>%-10s\" , model + 6 + ( model [ 0 ] == 'M' ) ) ; adobe_coeff ( make , model + 20 ) ; load_raw = & CLASS packed_load_raw ; } else if ( ! strncmp ( model , \"DiMAGE<S2SV_blank>G\" , 8 ) ) { if ( model [ 8 ] == '4' ) { height = 1716 ; width = 2304 ; } else if ( model [ 8 ] == '5' ) { konica_510z : height = 1956 ; width = 2607 ; raw_width = 2624 ; } else if ( model [ 8 ] == '6' ) { height = 2136 ; width = 2848 ; } data_offset += 14 ; filters = 0x61616161 ; konica_400z : load_raw = & CLASS unpacked_load_raw ; maximum = 0x3df ; order = 0x4d4d ; } } else if ( ! strcmp ( model , \"*ist<S2SV_blank>D\" ) ) { load_raw = & CLASS unpacked_load_raw ; data_error = - 1 ; } else if ( ! strcmp ( model , \"*ist<S2SV_blank>DS\" ) ) { height -= 2 ; } else if ( ! strncmp ( make , \"Samsung\" , 7 ) && raw_width == 4704 ) { height -= top_margin = 8 ; width -= 2 * ( left_margin = 8 ) ; load_flags = 32 ; } else if ( ! strncmp ( make , \"Samsung\" , 7 ) && ! strcmp ( model , \"NX3000\" ) ) { top_margin = 38 ; left_margin = 92 ; width = 5456 ; height = 3634 ; filters = 0x61616161 ; colors = 3 ; } else if ( ! strncmp ( make , \"Samsung\" , 7 ) && raw_height == 3714 ) { height -= top_margin = 18 ; left_margin = raw_width - ( width = 5536 ) ; if ( raw_width != 5600 ) left_margin = top_margin = 0 ; filters = 0x61616161 ; colors = 3 ; } else if ( ! strncmp ( make , \"Samsung\" , 7 ) && raw_width == 5632 ) { order = 0x4949 ; height = 3694 ; top_margin = 2 ; width = 5574 - ( left_margin = 32 + tiff_bps ) ; if ( tiff_bps == 12 ) load_flags = 80 ; } else if ( ! strncmp ( make , \"Samsung\" , 7 ) && raw_width == 5664 ) { height -= top_margin = 17 ; left_margin = 96 ; width = 5544 ; filters = 0x49494949 ; } else if ( ! strncmp ( make , \"Samsung\" , 7 ) && raw_width == 6496 ) { filters = 0x61616161 ; # ifdef LIBRAW_LIBRARY_BUILD if ( ! black && ! cblack [ 0 ] && ! cblack [ 1 ] && ! cblack [ 2 ] && ! cblack [ 3 ] ) # endif black = 1 << ( tiff_bps - 7 ) ; } else if ( ! strcmp ( model , \"EX1\" ) ) { order = 0x4949 ; height -= 20 ; top_margin = 2 ; if ( ( width -= 6 ) > 3682 ) { height -= 10 ; width -= 46 ; top_margin = 8 ; } } else if ( ! strcmp ( model , \"WB2000\" ) ) { order = 0x4949 ; height -= 3 ; top_margin = 2 ; if ( ( width -= 10 ) > 3718 ) { height -= 28 ; width -= 56 ; top_margin = 8 ; } } else if ( strstr ( model , \"WB550\" ) ) { strcpy ( model , \"WB550\" ) ; } else if ( ! strcmp ( model , \"EX2F\" ) ) { height = 3030 ; width = 4040 ; top_margin = 15 ; left_margin = 24 ; order = 0x4949 ; filters = 0x49494949 ; load_raw = & CLASS unpacked_load_raw ; } else if ( ! strcmp ( model , \"STV680<S2SV_blank>VGA\" ) ) { black = 16 ; } else if ( ! strcmp ( model , \"N95\" ) ) { height = raw_height - ( top_margin = 2 ) ; } else if ( ! strcmp ( model , \"640x480\" ) ) { gamma_curve ( 0.45 , 4.5 , 1 , 255 ) ; } else if ( ! strncmp ( make , \"Hasselblad\" , 10 ) ) { if ( load_raw == & CLASS lossless_jpeg_load_raw ) load_raw = & CLASS hasselblad_load_raw ; if ( raw_width == 7262 ) { height = 5444 ; width = 7248 ; top_margin = 4 ; left_margin = 7 ; filters = 0x61616161 ; if ( ! strncasecmp ( model , \"H3D\" , 3 ) ) { adobe_coeff ( \"Hasselblad\" , \"H3DII-39\" ) ; strcpy ( model , \"H3DII-39\" ) ; } } else if ( raw_width == 12000 ) { left_margin = 64 ; width = 11608 ; top_margin = 108 ; height = raw_height - top_margin ; adobe_coeff ( \"Hasselblad\" , \"H6D-100c\" ) ; } else if ( raw_width == 7410 || raw_width == 8282 ) { height -= 84 ; width -= 82 ; top_margin = 4 ; left_margin = 41 ; filters = 0x61616161 ; adobe_coeff ( \"Hasselblad\" , \"H4D-40\" ) ; strcpy ( model , \"H4D-40\" ) ; } else if ( raw_width == 8384 ) { top_margin = 96 ; height -= 96 ; left_margin = 48 ; width -= 106 ; adobe_coeff ( \"Hasselblad\" , \"X1D\" ) ; maximum = 0xffff ; tiff_bps = 16 ; } else if ( raw_width == 9044 ) { if ( black > 500 ) { top_margin = 12 ; left_margin = 44 ; width = 8956 ; height = 6708 ; memset ( cblack , 0 , sizeof ( cblack ) ) ; adobe_coeff ( \"Hasselblad\" , \"H4D-60\" ) ; strcpy ( model , \"H4D-60\" ) ; black = 512 ; } else { height = 6716 ; width = 8964 ; top_margin = 8 ; left_margin = 40 ; black += load_flags = 256 ; maximum = 0x8101 ; strcpy ( model , \"H3DII-60\" ) ; } } else if ( raw_width == 4090 ) { strcpy ( model , \"V96C\" ) ; height -= ( top_margin = 6 ) ; width -= ( left_margin = 3 ) + 7 ; filters = 0x61616161 ; } else if ( raw_width == 8282 && raw_height == 6240 ) { if ( ! strncasecmp ( model , \"H5D\" , 3 ) ) { left_margin = 54 ; top_margin = 16 ; width = 8176 ; height = 6132 ; black = 256 ; strcpy ( model , \"H5D-50\" ) ; } else if ( ! strncasecmp ( model , \"H3D\" , 3 ) ) { black = 0 ; left_margin = 54 ; top_margin = 16 ; width = 8176 ; height = 6132 ; memset ( cblack , 0 , sizeof ( cblack ) ) ; adobe_coeff ( \"Hasselblad\" , \"H3D-50\" ) ; strcpy ( model , \"H3D-50\" ) ; } } else if ( raw_width == 8374 && raw_height == 6304 ) { left_margin = 52 ; top_margin = 100 ; width = 8272 ; height = 6200 ; black = 256 ; strcpy ( model , \"H5D-50c\" ) ; } if ( tiff_samples > 1 ) { is_raw = tiff_samples + 1 ; if ( ! shot_select && ! half_size ) filters = 0 ; } } else if ( ! strncmp ( make , \"Sinar\" , 5 ) ) { if ( ! load_raw ) load_raw = & CLASS unpacked_load_raw ; if ( is_raw > 1 && ! shot_select && ! half_size ) filters = 0 ; maximum = 0x3fff ; } else if ( ! strncmp ( make , \"Leaf\" , 4 ) ) { maximum = 0x3fff ; fseek ( ifp , data_offset , SEEK_SET ) ; if ( ljpeg_start ( & jh , 1 ) && jh . bits == 15 ) maximum = 0x1fff ; if ( tiff_samples > 1 ) filters = 0 ; if ( tiff_samples > 1 || tile_length < raw_height ) { load_raw = & CLASS leaf_hdr_load_raw ; raw_width = tile_width ; } if ( ( width | height ) == 2048 ) { if ( tiff_samples == 1 ) { filters = 1 ; strcpy ( cdesc , \"RBTG\" ) ; strcpy ( model , \"CatchLight\" ) ; top_margin = 8 ; left_margin = 18 ; height = 2032 ; width = 2016 ; } else { strcpy ( model , \"DCB2\" ) ; top_margin = 10 ; left_margin = 16 ; height = 2028 ; width = 2022 ; } } else if ( width + height == 3144 + 2060 ) { if ( ! model [ 0 ] ) strcpy ( model , \"Cantare\" ) ; if ( width > height ) { top_margin = 6 ; left_margin = 32 ; height = 2048 ; width = 3072 ; filters = 0x61616161 ; } else { left_margin = 6 ; top_margin = 32 ; width = 2048 ; height = 3072 ; filters = 0x16161616 ; } if ( ! cam_mul [ 0 ] || model [ 0 ] == 'V' ) filters = 0 ; else is_raw = tiff_samples ; } else if ( width == 2116 ) { strcpy ( model , \"Valeo<S2SV_blank>6\" ) ; height -= 2 * ( top_margin = 30 ) ; width -= 2 * ( left_margin = 55 ) ; filters = 0x49494949 ; } else if ( width == 3171 ) { strcpy ( model , \"Valeo<S2SV_blank>6\" ) ; height -= 2 * ( top_margin = 24 ) ; width -= 2 * ( left_margin = 24 ) ; filters = 0x16161616 ; } } else if ( ! strncmp ( make , \"Leica\" , 5 ) || ! strncmp ( make , \"Panasonic\" , 9 ) || ! strncasecmp ( make , \"YUNEEC\" , 6 ) ) { if ( raw_width > 0 && ( ( flen - data_offset ) / ( raw_width * 8 / 7 ) == raw_height ) ) load_raw = & CLASS panasonic_load_raw ; if ( ! load_raw ) { load_raw = & CLASS unpacked_load_raw ; load_flags = 4 ; } zero_is_bad = 1 ; # ifdef LIBRAW_LIBRARY_BUILD float fratio = float ( data_size ) / ( float ( raw_height ) * float ( raw_width ) ) ; if ( ! ( raw_width % 10 ) && ! ( data_size % 16384 ) && fratio >= 1.6f && fratio <= 1.6001f ) { load_raw = & CLASS panasonic_16x10_load_raw ; zero_is_bad = 0 ; } # endif if ( ( height += 12 ) > raw_height ) height = raw_height ; for ( i = 0 ; i < sizeof pana / sizeof * pana ; i ++ ) if ( raw_width == pana [ i ] [ 0 ] && raw_height == pana [ i ] [ 1 ] ) { left_margin = pana [ i ] [ 2 ] ; top_margin = pana [ i ] [ 3 ] ; width += pana [ i ] [ 4 ] ; height += pana [ i ] [ 5 ] ; } filters = 0x01010101 * ( uchar ) \"\\\\x94\\\\x61\\\\x49\\\\x16\" [ ( ( filters - 1 ) ^ ( left_margin & 1 ) ^ ( top_margin << 1 ) ) & 3 ] ; } else if ( ! strcmp ( model , \"C770UZ\" ) ) { height = 1718 ; width = 2304 ; filters = 0x16161616 ; load_raw = & CLASS packed_load_raw ; load_flags = 30 ; } else if ( ! strncmp ( make , \"Olympus\" , 7 ) ) { height += height & 1 ; if ( exif_cfa ) filters = exif_cfa ; if ( width == 4100 ) width -= 4 ; if ( width == 4080 ) width -= 24 ; if ( width == 9280 ) { width -= 6 ; height -= 6 ; } if ( load_raw == & CLASS unpacked_load_raw ) load_flags = 4 ; tiff_bps = 12 ; if ( ! strcmp ( model , \"E-300\" ) || ! strcmp ( model , \"E-500\" ) ) { width -= 20 ; if ( load_raw == & CLASS unpacked_load_raw ) { maximum = 0xfc3 ; memset ( cblack , 0 , sizeof cblack ) ; } } else if ( ! strcmp ( model , \"STYLUS1\" ) ) { width -= 14 ; maximum = 0xfff ; } else if ( ! strcmp ( model , \"E-330\" ) ) { width -= 30 ; if ( load_raw == & CLASS unpacked_load_raw ) maximum = 0xf79 ; } else if ( ! strcmp ( model , \"SP550UZ\" ) ) { thumb_length = flen - ( thumb_offset = 0xa39800 ) ; thumb_height = 480 ; thumb_width = 640 ; } else if ( ! strcmp ( model , \"TG-4\" ) ) { width -= 16 ; } else if ( ! strcmp ( model , \"TG-5\" ) ) { width -= 26 ; } } else if ( ! strcmp ( model , \"N<S2SV_blank>Digital\" ) ) { height = 2047 ; width = 3072 ; filters = 0x61616161 ; data_offset = 0x1a00 ; load_raw = & CLASS packed_load_raw ; } else if ( ! strcmp ( model , \"DSC-F828\" ) ) { width = 3288 ; left_margin = 5 ; mask [ 1 ] [ 3 ] = - 17 ; data_offset = 862144 ; load_raw = & CLASS sony_load_raw ; filters = 0x9c9c9c9c ; colors = 4 ; strcpy ( cdesc , \"RGBE\" ) ; } else if ( ! strcmp ( model , \"DSC-V3\" ) ) { width = 3109 ; left_margin = 59 ; mask [ 0 ] [ 1 ] = 9 ; data_offset = 787392 ; load_raw = & CLASS sony_load_raw ; } else if ( ! strncmp ( make , \"Sony\" , 4 ) && raw_width == 3984 ) { width = 3925 ; order = 0x4d4d ; } else if ( ! strncmp ( make , \"Sony\" , 4 ) && raw_width == 4288 ) { width -= 32 ; } else if ( ! strcmp ( make , \"Sony\" ) && raw_width == 4600 ) { if ( ! strcmp ( model , \"DSLR-A350\" ) ) height -= 4 ; black = 0 ; } else if ( ! strncmp ( make , \"Sony\" , 4 ) && raw_width == 4928 ) { if ( height < 3280 ) width -= 8 ; } else if ( ! strncmp ( make , \"Sony\" , 4 ) && raw_width == 5504 ) { width -= height > 3664 ? 8 : 32 ; } else if ( ! strncmp ( make , \"Sony\" , 4 ) && raw_width == 6048 ) { width -= 24 ; if ( strstr ( model , \"RX1\" ) || strstr ( model , \"A99\" ) ) width -= 6 ; } else if ( ! strncmp ( make , \"Sony\" , 4 ) && raw_width == 7392 ) { width -= 30 ; } else if ( ! strncmp ( make , \"Sony\" , 4 ) && raw_width == 8000 ) { width -= 32 ; } else if ( ! strcmp ( model , \"DSLR-A100\" ) ) { if ( width == 3880 ) { height -- ; width = ++ raw_width ; } else { height -= 4 ; width -= 4 ; order = 0x4d4d ; load_flags = 2 ; } filters = 0x61616161 ; } else if ( ! strcmp ( model , \"PIXL\" ) ) { height -= top_margin = 4 ; width -= left_margin = 32 ; gamma_curve ( 0 , 7 , 1 , 255 ) ; } else if ( ! strcmp ( model , \"C603\" ) || ! strcmp ( model , \"C330\" ) || ! strcmp ( model , \"12MP\" ) ) { order = 0x4949 ; if ( filters && data_offset ) { fseek ( ifp , data_offset < 4096 ? 168 : 5252 , SEEK_SET ) ; read_shorts ( curve , 256 ) ; } else gamma_curve ( 0 , 3.875 , 1 , 255 ) ; load_raw = filters ? & CLASS eight_bit_load_raw : strcmp ( model , \"C330\" ) ? & CLASS kodak_c603_load_raw : & CLASS kodak_c330_load_raw ; load_flags = tiff_bps > 16 ; tiff_bps = 8 ; } else if ( ! strncasecmp ( model , \"EasyShare\" , 9 ) ) { data_offset = data_offset < 0x15000 ? 0x15000 : 0x17000 ; load_raw = & CLASS packed_load_raw ; } else if ( ! strncasecmp ( make , \"Kodak\" , 5 ) ) { if ( filters == UINT_MAX ) filters = 0x61616161 ; if ( ! strncmp ( model , \"NC2000\" , 6 ) || ! strncmp ( model , \"EOSDCS\" , 6 ) || ! strncmp ( model , \"DCS4\" , 4 ) ) { width -= 4 ; left_margin = 2 ; if ( model [ 6 ] == '<S2SV_blank>' ) model [ 6 ] = 0 ; if ( ! strcmp ( model , \"DCS460A\" ) ) goto bw ; } else if ( ! strcmp ( model , \"DCS660M\" ) ) { black = 214 ; goto bw ; } else if ( ! strcmp ( model , \"DCS760M\" ) ) { bw : colors = 1 ; filters = 0 ; } if ( ! strcmp ( model + 4 , \"20X\" ) ) strcpy ( cdesc , \"MYCY\" ) ; if ( strstr ( model , \"DC25\" ) ) { strcpy ( model , \"DC25\" ) ; data_offset = 15424 ; } if ( ! strncmp ( model , \"DC2\" , 3 ) ) { raw_height = 2 + ( height = 242 ) ; if ( ! strncmp ( model , \"DC290\" , 5 ) ) iso_speed = 100 ; if ( ! strncmp ( model , \"DC280\" , 5 ) ) iso_speed = 70 ; if ( flen < 100000 ) { raw_width = 256 ; width = 249 ; pixel_aspect = ( 4.0 * height ) / ( 3.0 * width ) ; } else { raw_width = 512 ; width = 501 ; pixel_aspect = ( 493.0 * height ) / ( 373.0 * width ) ; } top_margin = left_margin = 1 ; colors = 4 ; filters = 0x8d8d8d8d ; simple_coeff ( 1 ) ; pre_mul [ 1 ] = 1.179 ; pre_mul [ 2 ] = 1.209 ; pre_mul [ 3 ] = 1.036 ; load_raw = & CLASS eight_bit_load_raw ; } else if ( ! strcmp ( model , \"40\" ) ) { strcpy ( model , \"DC40\" ) ; height = 512 ; width = 768 ; data_offset = 1152 ; load_raw = & CLASS kodak_radc_load_raw ; tiff_bps = 12 ; } else if ( strstr ( model , \"DC50\" ) ) { strcpy ( model , \"DC50\" ) ; height = 512 ; width = 768 ; iso_speed = 84 ; data_offset = 19712 ; load_raw = & CLASS kodak_radc_load_raw ; } else if ( strstr ( model , \"DC120\" ) ) { strcpy ( model , \"DC120\" ) ; raw_height = height = 976 ; raw_width = width = 848 ; iso_speed = 160 ; pixel_aspect = height / 0.75 / width ; load_raw = tiff_compress == 7 ? & CLASS kodak_jpeg_load_raw : & CLASS kodak_dc120_load_raw ; } else if ( ! strcmp ( model , \"DCS200\" ) ) { thumb_height = 128 ; thumb_width = 192 ; thumb_offset = 6144 ; thumb_misc = 360 ; iso_speed = 140 ; write_thumb = & CLASS layer_thumb ; black = 17 ; } } else if ( ! strcmp ( model , \"Fotoman<S2SV_blank>Pixtura\" ) ) { height = 512 ; width = 768 ; data_offset = 3632 ; load_raw = & CLASS kodak_radc_load_raw ; filters = 0x61616161 ; simple_coeff ( 2 ) ; } else if ( ! strncmp ( model , \"QuickTake\" , 9 ) ) { if ( head [ 5 ] ) strcpy ( model + 10 , \"200\" ) ; fseek ( ifp , 544 , SEEK_SET ) ; height = get2 ( ) ; width = get2 ( ) ; data_offset = ( get4 ( ) , get2 ( ) ) == 30 ? 738 : 736 ; if ( height > width ) { SWAP ( height , width ) ; fseek ( ifp , data_offset - 6 , SEEK_SET ) ; flip = ~ get2 ( ) & 3 ? 5 : 6 ; } filters = 0x61616161 ; } else if ( ! strncmp ( make , \"Rollei\" , 6 ) && ! load_raw ) { switch ( raw_width ) { case 1316 : height = 1030 ; width = 1300 ; top_margin = 1 ; left_margin = 6 ; break ; case 2568 : height = 1960 ; width = 2560 ; top_margin = 2 ; left_margin = 8 ; } filters = 0x16161616 ; load_raw = & CLASS rollei_load_raw ; } else if ( ! strcmp ( model , \"GRAS-50S5C\" ) ) { height = 2048 ; width = 2440 ; load_raw = & CLASS unpacked_load_raw ; data_offset = 0 ; filters = 0x49494949 ; order = 0x4949 ; maximum = 0xfffC ; } else if ( ! strcmp ( model , \"BB-500CL\" ) ) { height = 2058 ; width = 2448 ; load_raw = & CLASS unpacked_load_raw ; data_offset = 0 ; filters = 0x94949494 ; order = 0x4949 ; maximum = 0x3fff ; } else if ( ! strcmp ( model , \"BB-500GE\" ) ) { height = 2058 ; width = 2456 ; load_raw = & CLASS unpacked_load_raw ; data_offset = 0 ; filters = 0x94949494 ; order = 0x4949 ; maximum = 0x3fff ; } else if ( ! strcmp ( model , \"SVS625CL\" ) ) { height = 2050 ; width = 2448 ; load_raw = & CLASS unpacked_load_raw ; data_offset = 0 ; filters = 0x94949494 ; order = 0x4949 ; maximum = 0x0fff ; } if ( ! load_raw || height < 22 || width < 22 || # ifdef LIBRAW_LIBRARY_BUILD ( tiff_bps > 16 && load_raw != & LibRaw : : deflate_dng_load_raw ) # else tiff_bps > 16 # endif || tiff_samples > 4 || colors > 4 || colors < 1 ) { is_raw = 0 ; # ifdef LIBRAW_LIBRARY_BUILD RUN_CALLBACK ( LIBRAW_PROGRESS_IDENTIFY , 1 , 2 ) ; # endif return ; } if ( ! model [ 0 ] ) sprintf ( model , \"%dx%d\" , width , height ) ; if ( filters == UINT_MAX ) filters = 0x94949494 ; if ( thumb_offset && ! thumb_height ) { fseek ( ifp , thumb_offset , SEEK_SET ) ; if ( ljpeg_start ( & jh , 1 ) ) { thumb_width = jh . wide ; thumb_height = jh . high ; } } dng_skip : # ifdef LIBRAW_LIBRARY_BUILD if ( dng_version ) { int iifd = 0 ; for ( ; iifd < tiff_nifds ; iifd ++ ) if ( tiff_ifd [ iifd ] . offset == data_offset ) break ; int pifd = - 1 ; for ( int ii = 0 ; ii < tiff_nifds ; ii ++ ) if ( tiff_ifd [ ii ] . offset == thumb_offset ) { pifd = ii ; break ; } # define CFAROUND ( value , filters ) filters ? ( filters >= 1000 ? ( ( value + 1 ) / 2 ) * 2 : ( ( value + 5 ) / 6 ) * 6 ) : value # define IFDCOLORINDEX ( ifd , subset , bit ) ( tiff_ifd [ ifd ] . dng_color [ subset ] . parsedfields & bit ) ? ifd : ( ( tiff_ifd [ 0 ] . dng_color [ subset ] . parsedfields & bit ) ? 0 : - 1 ) # define IFDLEVELINDEX ( ifd , bit ) ( tiff_ifd [ ifd ] . dng_levels . parsedfields & bit ) ? ifd : ( ( tiff_ifd [ 0 ] . dng_levels . parsedfields & bit ) ? 0 : - 1 ) # define COPYARR ( to , from ) memmove ( & to , & from , sizeof ( from ) ) if ( iifd < tiff_nifds ) { int sidx ; if ( imgdata . params . raw_processing_options & LIBRAW_PROCESSING_USE_DNG_DEFAULT_CROP ) { sidx = IFDLEVELINDEX ( iifd , LIBRAW_DNGFM_CROPORIGIN ) ; int sidx2 = IFDLEVELINDEX ( iifd , LIBRAW_DNGFM_CROPSIZE ) ; if ( sidx >= 0 && sidx == sidx2 ) { int lm = tiff_ifd [ sidx ] . dng_levels . default_crop [ 0 ] ; int lmm = CFAROUND ( lm , filters ) ; int tm = tiff_ifd [ sidx ] . dng_levels . default_crop [ 1 ] ; int tmm = CFAROUND ( tm , filters ) ; int ww = tiff_ifd [ sidx ] . dng_levels . default_crop [ 2 ] ; int hh = tiff_ifd [ sidx ] . dng_levels . default_crop [ 3 ] ; if ( lmm > lm ) ww -= ( lmm - lm ) ; if ( tmm > tm ) hh -= ( tmm - tm ) ; if ( left_margin + lm + ww <= raw_width && top_margin + tm + hh <= raw_height ) { left_margin += lmm ; top_margin += tmm ; width = ww ; height = hh ; } } } if ( ! ( imgdata . color . dng_color [ 0 ] . parsedfields & LIBRAW_DNGFM_FORWARDMATRIX ) ) { sidx = IFDCOLORINDEX ( iifd , 0 , LIBRAW_DNGFM_FORWARDMATRIX ) ; if ( sidx >= 0 ) COPYARR ( imgdata . color . dng_color [ 0 ] . forwardmatrix , tiff_ifd [ sidx ] . dng_color [ 0 ] . forwardmatrix ) ; } if ( ! ( imgdata . color . dng_color [ 1 ] . parsedfields & LIBRAW_DNGFM_FORWARDMATRIX ) ) { sidx = IFDCOLORINDEX ( iifd , 1 , LIBRAW_DNGFM_FORWARDMATRIX ) ; if ( sidx >= 0 ) COPYARR ( imgdata . color . dng_color [ 1 ] . forwardmatrix , tiff_ifd [ sidx ] . dng_color [ 1 ] . forwardmatrix ) ; } for ( int ss = 0 ; ss < 2 ; ss ++ ) { sidx = IFDCOLORINDEX ( iifd , ss , LIBRAW_DNGFM_COLORMATRIX ) ; if ( sidx >= 0 ) COPYARR ( imgdata . color . dng_color [ ss ] . colormatrix , tiff_ifd [ sidx ] . dng_color [ ss ] . colormatrix ) ; sidx = IFDCOLORINDEX ( iifd , ss , LIBRAW_DNGFM_CALIBRATION ) ; if ( sidx >= 0 ) COPYARR ( imgdata . color . dng_color [ ss ] . calibration , tiff_ifd [ sidx ] . dng_color [ ss ] . calibration ) ; sidx = IFDCOLORINDEX ( iifd , ss , LIBRAW_DNGFM_ILLUMINANT ) ; if ( sidx >= 0 ) imgdata . color . dng_color [ ss ] . illuminant = tiff_ifd [ sidx ] . dng_color [ ss ] . illuminant ; } sidx = IFDLEVELINDEX ( iifd , LIBRAW_DNGFM_ANALOGBALANCE ) ; if ( sidx >= 0 ) COPYARR ( imgdata . color . dng_levels . analogbalance , tiff_ifd [ sidx ] . dng_levels . analogbalance ) ; sidx = IFDLEVELINDEX ( iifd , LIBRAW_DNGFM_WHITE ) ; if ( sidx >= 0 ) COPYARR ( imgdata . color . dng_levels . dng_whitelevel , tiff_ifd [ sidx ] . dng_levels . dng_whitelevel ) ; sidx = IFDLEVELINDEX ( iifd , LIBRAW_DNGFM_BLACK ) ; if ( sidx >= 0 ) { imgdata . color . dng_levels . dng_black = tiff_ifd [ sidx ] . dng_levels . dng_black ; COPYARR ( imgdata . color . dng_levels . dng_cblack , tiff_ifd [ sidx ] . dng_levels . dng_cblack ) ; } if ( pifd >= 0 ) { sidx = IFDLEVELINDEX ( pifd , LIBRAW_DNGFM_PREVIEWCS ) ; if ( sidx >= 0 ) imgdata . color . dng_levels . preview_colorspace = tiff_ifd [ sidx ] . dng_levels . preview_colorspace ; } sidx = IFDLEVELINDEX ( iifd , LIBRAW_DNGFM_OPCODE2 ) ; if ( sidx >= 0 ) meta_offset = tiff_ifd [ sidx ] . opcode2_offset ; sidx = IFDLEVELINDEX ( iifd , LIBRAW_DNGFM_LINTABLE ) ; INT64 linoff = - 1 ; int linlen = 0 ; if ( sidx >= 0 ) { linoff = tiff_ifd [ sidx ] . lineartable_offset ; linlen = tiff_ifd [ sidx ] . lineartable_len ; } if ( linoff >= 0 && linlen > 0 ) { INT64 pos = ftell ( ifp ) ; fseek ( ifp , linoff , SEEK_SET ) ; linear_table ( linlen ) ; fseek ( ifp , pos , SEEK_SET ) ; } } maximum = imgdata . color . dng_levels . dng_whitelevel [ 0 ] ; black = imgdata . color . dng_levels . dng_black ; int ll = LIM ( 0 , ( sizeof ( cblack ) / sizeof ( cblack [ 0 ] ) ) , ( sizeof ( imgdata . color . dng_levels . dng_cblack ) / sizeof ( imgdata . color . dng_levels . dng_cblack [ 0 ] ) ) ) ; for ( int i = 0 ; i < ll ; i ++ ) cblack [ i ] = imgdata . color . dng_levels . dng_cblack [ i ] ; } # endif if ( ! load_raw || height < 22 || width < 22 || # ifdef LIBRAW_LIBRARY_BUILD ( tiff_bps > 16 && load_raw != & LibRaw : : deflate_dng_load_raw ) # else tiff_bps > 16 # endif || tiff_samples > 4 || colors > 4 || colors < 1 ) { is_raw = 0 ; # ifdef LIBRAW_LIBRARY_BUILD RUN_CALLBACK ( LIBRAW_PROGRESS_IDENTIFY , 1 , 2 ) ; # endif return ; } if ( ( use_camera_matrix & ( ( use_camera_wb || dng_version ) | 0x2 ) ) && cmatrix [ 0 ] [ 0 ] > 0.125 ) { memcpy ( rgb_cam , cmatrix , sizeof cmatrix ) ; raw_color = 0 ; } if ( raw_color ) adobe_coeff ( make , model ) ; # ifdef LIBRAW_LIBRARY_BUILD else if ( imgdata . color . cam_xyz [ 0 ] [ 0 ] < 0.01 ) adobe_coeff ( make , model , 1 ) ; # endif if ( load_raw == & CLASS kodak_radc_load_raw ) if ( raw_color ) adobe_coeff ( \"Apple\" , \"Quicktake\" ) ; <S2SV_StartBug> if ( fuji_width ) <S2SV_EndBug> { fuji_width = width >> ! fuji_layout ; filters = fuji_width & 1 ? 0x94949494 : 0x49494949 ; width = ( height >> fuji_layout ) + fuji_width ; height = width - 1 ; pixel_aspect = 1 ; } else { if ( raw_height < height ) raw_height = height ; if ( raw_width < width ) raw_width = width ; } if ( ! tiff_bps ) tiff_bps = 12 ; if ( ! maximum ) { maximum = ( 1 << tiff_bps ) - 1 ; if ( maximum < 0x10000 && curve [ maximum ] > 0 && load_raw == & CLASS sony_arw2_load_raw ) maximum = curve [ maximum ] ; } if ( ! load_raw || height < 22 || width < 22 || # ifdef LIBRAW_LIBRARY_BUILD ( tiff_bps > 16 && load_raw != & LibRaw : : deflate_dng_load_raw ) # else tiff_bps > 16 # endif || tiff_samples > 6 || colors > 4 ) is_raw = 0 ; if ( raw_width < 22 || raw_width > 64000 || raw_height < 22 || raw_height > 64000 ) is_raw = 0 ; # ifdef NO_JASPER if ( load_raw == & CLASS redcine_load_raw ) { # ifdef DCRAW_VERBOSE fprintf ( stderr , _ ( \"%s:<S2SV_blank>You<S2SV_blank>must<S2SV_blank>link<S2SV_blank>dcraw<S2SV_blank>with<S2SV_blank>%s!!\\\\n\" ) , ifname , \"libjasper\" ) ; # endif is_raw = 0 ; # ifdef LIBRAW_LIBRARY_BUILD imgdata . process_warnings |= LIBRAW_WARN_NO_JASPER ; # endif } # endif # ifdef NO_JPEG if ( load_raw == & CLASS kodak_jpeg_load_raw || load_raw == & CLASS lossy_dng_load_raw ) { # ifdef DCRAW_VERBOSE fprintf ( stderr , _ ( \"%s:<S2SV_blank>You<S2SV_blank>must<S2SV_blank>link<S2SV_blank>dcraw<S2SV_blank>with<S2SV_blank>%s!!\\\\n\" ) , ifname , \"libjpeg\" ) ; # endif is_raw = 0 ; # ifdef LIBRAW_LIBRARY_BUILD imgdata . process_warnings |= LIBRAW_WARN_NO_JPEGLIB ; # endif } # endif if ( ! cdesc [ 0 ] ) strcpy ( cdesc , colors == 3 ? \"RGBG\" : \"GMCY\" ) ; if ( ! raw_height ) raw_height = height ; if ( ! raw_width ) raw_width = width ; if ( filters > 999 && colors == 3 ) filters |= ( ( filters >> 2 & 0x22222222 ) | ( filters << 2 & 0x88888888 ) ) & filters << 1 ; notraw : if ( flip == UINT_MAX ) flip = tiff_flip ; if ( flip == UINT_MAX ) flip = 0 ; if ( flip > 89 || flip < - 89 ) { switch ( ( flip + 3600 ) % 360 ) { case 270 : flip = 5 ; break ; case 180 : flip = 3 ; break ; case 90 : flip = 6 ; break ; } } # ifdef LIBRAW_LIBRARY_BUILD RUN_CALLBACK ( LIBRAW_PROGRESS_IDENTIFY , 1 , 2 ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Quicktake\" ) ; # ifdef LIBRAW_LIBRARY_BUILD if ( fuji_width && ! dng_version && ! ( imgdata . process_warnings & LIBRAW_WARN_PARSEFUJI_PROCESSED ) ) fuji_width = 0 ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7990\n\n```\nCWE-362 int rds_sendmsg ( struct socket * sock , struct msghdr * msg , size_t payload_len ) { struct sock * sk = sock -> sk ; struct rds_sock * rs = rds_sk_to_rs ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_in * , usin , msg -> msg_name ) ; __be32 daddr ; __be16 dport ; struct rds_message * rm = NULL ; struct rds_connection * conn ; int ret = 0 ; int queued = 0 , allocated_mr = 0 ; int nonblock = msg -> msg_flags & MSG_DONTWAIT ; long timeo = sock_sndtimeo ( sk , nonblock ) ; if ( msg -> msg_flags & ~ ( MSG_DONTWAIT | MSG_CMSG_COMPAT ) ) { ret = - EOPNOTSUPP ; goto out ; } if ( msg -> msg_namelen ) { if ( msg -> msg_namelen < sizeof ( * usin ) || usin -> sin_family != AF_INET ) { ret = - EINVAL ; goto out ; } daddr = usin -> sin_addr . s_addr ; dport = usin -> sin_port ; } else { lock_sock ( sk ) ; daddr = rs -> rs_conn_addr ; dport = rs -> rs_conn_port ; release_sock ( sk ) ; } <S2SV_StartBug> if ( daddr == 0 || rs -> rs_bound_addr == 0 ) { <S2SV_EndBug> <S2SV_StartBug> ret = - ENOTCONN ; <S2SV_EndBug> goto out ; <S2SV_StartBug> } <S2SV_EndBug> if ( payload_len > rds_sk_sndbuf ( rs ) ) { ret = - EMSGSIZE ; goto out ; } ret = rds_rm_size ( msg , payload_len ) ; if ( ret < 0 ) goto out ; rm = rds_message_alloc ( ret , GFP_KERNEL ) ; if ( ! rm ) { ret = - ENOMEM ; goto out ; } if ( payload_len ) { rm -> data . op_sg = rds_message_alloc_sgs ( rm , ceil ( payload_len , PAGE_SIZE ) ) ; if ( ! rm -> data . op_sg ) { ret = - ENOMEM ; goto out ; } ret = rds_message_copy_from_user ( rm , & msg -> msg_iter ) ; if ( ret ) goto out ; } rm -> data . op_active = 1 ; rm -> m_daddr = daddr ; if ( rs -> rs_conn && rs -> rs_conn -> c_faddr == daddr ) conn = rs -> rs_conn ; else { conn = rds_conn_create_outgoing ( sock_net ( sock -> sk ) , rs -> rs_bound_addr , daddr , rs -> rs_transport , sock -> sk -> sk_allocation ) ; if ( IS_ERR ( conn ) ) { ret = PTR_ERR ( conn ) ; goto out ; } rs -> rs_conn = conn ; } ret = rds_cmsg_send ( rs , rm , msg , & allocated_mr ) ; if ( ret ) goto out ; if ( rm -> rdma . op_active && ! conn -> c_trans -> xmit_rdma ) { printk_ratelimited ( KERN_NOTICE \"rdma_op<S2SV_blank>%p<S2SV_blank>conn<S2SV_blank>xmit_rdma<S2SV_blank>%p\\\\n\" , & rm -> rdma , conn -> c_trans -> xmit_rdma ) ; ret = - EOPNOTSUPP ; goto out ; } if ( rm -> atomic . op_active && ! conn -> c_trans -> xmit_atomic ) { printk_ratelimited ( KERN_NOTICE \"atomic_op<S2SV_blank>%p<S2SV_blank>conn<S2SV_blank>xmit_atomic<S2SV_blank>%p\\\\n\" , & rm -> atomic , conn -> c_trans -> xmit_atomic ) ; ret = - EOPNOTSUPP ; goto out ; } rds_conn_connect_if_down ( conn ) ; ret = rds_cong_wait ( conn -> c_fcong , dport , nonblock , rs ) ; if ( ret ) { rs -> rs_seen_congestion = 1 ; goto out ; } while ( ! rds_send_queue_rm ( rs , conn , rm , rs -> rs_bound_port , dport , & queued ) ) { rds_stats_inc ( s_send_queue_full ) ; if ( nonblock ) { ret = - EAGAIN ; goto out ; } timeo = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , rds_send_queue_rm ( rs , conn , rm , rs -> rs_bound_port , dport , & queued ) , timeo ) ; rdsdebug ( \"sendmsg<S2SV_blank>woke<S2SV_blank>queued<S2SV_blank>%d<S2SV_blank>timeo<S2SV_blank>%ld\\\\n\" , queued , timeo ) ; if ( timeo > 0 || timeo == MAX_SCHEDULE_TIMEOUT ) continue ; ret = timeo ; if ( ret == 0 ) ret = - ETIMEDOUT ; goto out ; } rds_stats_inc ( s_send_queued ) ; ret = rds_send_xmit ( conn ) ; if ( ret == - ENOMEM || ret == - EAGAIN ) queue_delayed_work ( rds_wq , & conn -> c_send_w , 1 ) ; rds_message_put ( rm ) ; return payload_len ; out : if ( allocated_mr ) rds_rdma_unuse ( rs , rds_rdma_cookie_key ( rm -> m_rdma_cookie ) , 1 ) ; if ( rm ) rds_message_put ( rm ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } lock_sock ( sk ) ; <S2SV_ModStart> 0 ) { release_sock ( sk ) ; <S2SV_ModStart> out ; } release_sock ( sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9074\n\n```\nCWE-125 static struct sk_buff * ipv6_gso_segment ( struct sk_buff * skb , netdev_features_t features ) { struct sk_buff * segs = ERR_PTR ( - EINVAL ) ; struct ipv6hdr * ipv6h ; const struct net_offload * ops ; int proto ; struct frag_hdr * fptr ; unsigned int unfrag_ip6hlen ; unsigned int payload_len ; u8 * prevhdr ; int offset = 0 ; bool encap , udpfrag ; int nhoff ; bool gso_partial ; skb_reset_network_header ( skb ) ; nhoff = skb_network_header ( skb ) - skb_mac_header ( skb ) ; if ( unlikely ( ! pskb_may_pull ( skb , sizeof ( * ipv6h ) ) ) ) goto out ; encap = SKB_GSO_CB ( skb ) -> encap_level > 0 ; if ( encap ) features &= skb -> dev -> hw_enc_features ; SKB_GSO_CB ( skb ) -> encap_level += sizeof ( * ipv6h ) ; ipv6h = ipv6_hdr ( skb ) ; __skb_pull ( skb , sizeof ( * ipv6h ) ) ; segs = ERR_PTR ( - EPROTONOSUPPORT ) ; proto = ipv6_gso_pull_exthdrs ( skb , ipv6h -> nexthdr ) ; if ( skb -> encapsulation && skb_shinfo ( skb ) -> gso_type & ( SKB_GSO_IPXIP4 | SKB_GSO_IPXIP6 ) ) udpfrag = proto == IPPROTO_UDP && encap ; else udpfrag = proto == IPPROTO_UDP && ! skb -> encapsulation ; ops = rcu_dereference ( inet6_offloads [ proto ] ) ; if ( likely ( ops && ops -> callbacks . gso_segment ) ) { skb_reset_transport_header ( skb ) ; segs = ops -> callbacks . gso_segment ( skb , features ) ; } if ( IS_ERR_OR_NULL ( segs ) ) goto out ; gso_partial = ! ! ( skb_shinfo ( segs ) -> gso_type & SKB_GSO_PARTIAL ) ; for ( skb = segs ; skb ; skb = skb -> next ) { ipv6h = ( struct ipv6hdr * ) ( skb_mac_header ( skb ) + nhoff ) ; if ( gso_partial ) payload_len = skb_shinfo ( skb ) -> gso_size + SKB_GSO_CB ( skb ) -> data_offset + skb -> head - ( unsigned char * ) ( ipv6h + 1 ) ; else payload_len = skb -> len - nhoff - sizeof ( * ipv6h ) ; ipv6h -> payload_len = htons ( payload_len ) ; skb -> network_header = ( u8 * ) ipv6h - skb -> head ; if ( udpfrag ) { unfrag_ip6hlen = ip6_find_1stfragopt ( skb , & prevhdr ) ; <S2SV_StartBug> fptr = ( struct frag_hdr * ) ( ( u8 * ) ipv6h + unfrag_ip6hlen ) ; <S2SV_EndBug> fptr -> frag_off = htons ( offset ) ; if ( skb -> next ) fptr -> frag_off |= htons ( IP6_MF ) ; offset += ( ntohs ( ipv6h -> payload_len ) - sizeof ( struct frag_hdr ) ) ; } if ( encap ) skb_reset_inner_headers ( skb ) ; } out : return segs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prevhdr ) ; if ( unfrag_ip6hlen < 0 ) return ERR_PTR ( unfrag_ip6hlen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void decode_macroblock ( VP8D_COMP * pbi , MACROBLOCKD * xd , unsigned int mb_idx ) { MB_PREDICTION_MODE mode ; int i ; # if CONFIG_ERROR_CONCEALMENT int corruption_detected = 0 ; <S2SV_StartBug> # endif <S2SV_EndBug> if ( xd -> mode_info_context -> mbmi . mb_skip_coeff ) { vp8_reset_mb_tokens_context ( xd ) ; } else if ( ! vp8dx_bool_error ( xd -> current_bc ) ) { int eobtotal ; eobtotal = vp8_decode_mb_tokens ( pbi , xd ) ; xd -> mode_info_context -> mbmi . mb_skip_coeff = ( eobtotal == 0 ) ; } mode = xd -> mode_info_context -> mbmi . mode ; if ( xd -> segmentation_enabled ) vp8_mb_init_dequantizer ( pbi , xd ) ; # if CONFIG_ERROR_CONCEALMENT if ( pbi -> ec_active ) { int throw_residual ; throw_residual = ( ! pbi -> independent_partitions && pbi -> frame_corrupt_residual ) ; throw_residual = ( throw_residual || vp8dx_bool_error ( xd -> current_bc ) ) ; if ( ( mb_idx >= pbi -> mvs_corrupt_from_mb || throw_residual ) ) { pbi -> frame_corrupt_residual = 1 ; <S2SV_StartBug> vpx_memset ( xd -> qcoeff , 0 , sizeof ( xd -> qcoeff ) ) ; <S2SV_EndBug> vp8_conceal_corrupt_mb ( xd ) ; corruption_detected = 1 ; <S2SV_StartBug> vpx_memset ( xd -> eobs , 0 , 25 ) ; <S2SV_EndBug> } } # endif if ( xd -> mode_info_context -> mbmi . ref_frame == INTRA_FRAME ) { vp8_build_intra_predictors_mbuv_s ( xd , xd -> recon_above [ 1 ] , xd -> recon_above [ 2 ] , xd -> recon_left [ 1 ] , xd -> recon_left [ 2 ] , xd -> recon_left_stride [ 1 ] , xd -> dst . u_buffer , xd -> dst . v_buffer , xd -> dst . uv_stride ) ; if ( mode != B_PRED ) { vp8_build_intra_predictors_mby_s ( xd , xd -> recon_above [ 0 ] , xd -> recon_left [ 0 ] , xd -> recon_left_stride [ 0 ] , xd -> dst . y_buffer , xd -> dst . y_stride ) ; } else { short * DQC = xd -> dequant_y1 ; int dst_stride = xd -> dst . y_stride ; if ( xd -> mode_info_context -> mbmi . mb_skip_coeff ) <S2SV_StartBug> vpx_memset ( xd -> eobs , 0 , 25 ) ; <S2SV_EndBug> intra_prediction_down_copy ( xd , xd -> recon_above [ 0 ] + 16 ) ; for ( i = 0 ; i < 16 ; i ++ ) { BLOCKD * b = & xd -> block [ i ] ; unsigned char * dst = xd -> dst . y_buffer + b -> offset ; B_PREDICTION_MODE b_mode = xd -> mode_info_context -> bmi [ i ] . as_mode ; unsigned char * Above = dst - dst_stride ; unsigned char * yleft = dst - 1 ; int left_stride = dst_stride ; unsigned char top_left = Above [ - 1 ] ; vp8_intra4x4_predict ( Above , yleft , left_stride , b_mode , dst , dst_stride , top_left ) ; if ( xd -> eobs [ i ] ) { if ( xd -> eobs [ i ] > 1 ) { vp8_dequant_idct_add ( b -> qcoeff , DQC , dst , dst_stride ) ; } else { vp8_dc_only_idct_add ( b -> qcoeff [ 0 ] * DQC [ 0 ] , dst , dst_stride , dst , dst_stride ) ; <S2SV_StartBug> vpx_memset ( b -> qcoeff , 0 , 2 * sizeof ( b -> qcoeff [ 0 ] ) ) ; <S2SV_EndBug> } } } } } else { vp8_build_inter_predictors_mb ( xd ) ; } # if CONFIG_ERROR_CONCEALMENT if ( corruption_detected ) { return ; } # endif if ( ! xd -> mode_info_context -> mbmi . mb_skip_coeff ) { if ( mode != B_PRED ) { short * DQC = xd -> dequant_y1 ; if ( mode != SPLITMV ) { BLOCKD * b = & xd -> block [ 24 ] ; if ( xd -> eobs [ 24 ] > 1 ) { vp8_dequantize_b ( b , xd -> dequant_y2 ) ; vp8_short_inv_walsh4x4 ( & b -> dqcoeff [ 0 ] , xd -> qcoeff ) ; <S2SV_StartBug> vpx_memset ( b -> qcoeff , 0 , 16 * sizeof ( b -> qcoeff [ 0 ] ) ) ; <S2SV_EndBug> } else { b -> dqcoeff [ 0 ] = b -> qcoeff [ 0 ] * xd -> dequant_y2 [ 0 ] ; vp8_short_inv_walsh4x4_1 ( & b -> dqcoeff [ 0 ] , xd -> qcoeff ) ; <S2SV_StartBug> vpx_memset ( b -> qcoeff , 0 , 2 * sizeof ( b -> qcoeff [ 0 ] ) ) ; <S2SV_EndBug> } DQC = xd -> dequant_y1_dc ; } vp8_dequant_idct_add_y_block ( xd -> qcoeff , DQC , xd -> dst . y_buffer , xd -> dst . y_stride , xd -> eobs ) ; } vp8_dequant_idct_add_uv_block ( xd -> qcoeff + 16 * 16 , xd -> dequant_uv , xd -> dst . u_buffer , xd -> dst . v_buffer , xd -> dst . uv_stride , xd -> eobs + 16 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; # else ( void ) mb_idx ; # <S2SV_ModStart> = 1 ; memset <S2SV_ModEnd> ( xd -> <S2SV_ModStart> = 1 ; memset <S2SV_ModEnd> ( xd -> <S2SV_ModStart> . mb_skip_coeff ) memset <S2SV_ModEnd> ( xd -> <S2SV_ModStart> dst_stride ) ; memset <S2SV_ModEnd> ( b -> <S2SV_ModStart> qcoeff ) ; memset <S2SV_ModEnd> ( b -> <S2SV_ModStart> qcoeff ) ; memset <S2SV_ModEnd> ( b ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 <S2SV_StartBug> static void show_object ( struct object * object , struct strbuf * path , <S2SV_EndBug> <S2SV_StartBug> const char * last , void * data ) <S2SV_EndBug> { struct bitmap * base = data ; int bitmap_pos ; bitmap_pos = bitmap_position ( object -> oid . hash ) ; <S2SV_StartBug> if ( bitmap_pos < 0 ) { <S2SV_EndBug> char * name = path_name ( path , last ) ; bitmap_pos = ext_index_add_object ( object , name ) ; <S2SV_StartBug> free ( name ) ; <S2SV_EndBug> } bitmap_set ( base , bitmap_pos ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * object , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void * <S2SV_ModStart> < 0 ) <S2SV_ModEnd> bitmap_pos = ext_index_add_object <S2SV_ModStart> name ) ; <S2SV_ModEnd> bitmap_set ( base\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 qboolean S_AL_Init ( soundInterface_t * si ) { # ifdef USE_OPENAL const char * device = NULL ; const char * inputdevice = NULL ; int i ; if ( ! si ) { return qfalse ; } for ( i = 0 ; i < MAX_RAW_STREAMS ; i ++ ) { streamSourceHandles [ i ] = - 1 ; streamPlaying [ i ] = qfalse ; streamSources [ i ] = 0 ; streamNumBuffers [ i ] = 0 ; streamBufIndex [ i ] = 0 ; } s_alPrecache = Cvar_Get ( \"s_alPrecache\" , \"1\" , CVAR_ARCHIVE ) ; s_alGain = Cvar_Get ( \"s_alGain\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alSources = Cvar_Get ( \"s_alSources\" , \"128\" , CVAR_ARCHIVE ) ; s_alDopplerFactor = Cvar_Get ( \"s_alDopplerFactor\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alDopplerSpeed = Cvar_Get ( \"s_alDopplerSpeed\" , \"9000\" , CVAR_ARCHIVE ) ; s_alMinDistance = Cvar_Get ( \"s_alMinDistance\" , \"256\" , CVAR_ARCHIVE ) ; s_alMaxDistance = Cvar_Get ( \"s_alMaxDistance\" , \"1024\" , CVAR_ARCHIVE ) ; s_alRolloff = Cvar_Get ( \"s_alRolloff\" , \"1.3\" , CVAR_ARCHIVE ) ; s_alGraceDistance = Cvar_Get ( \"s_alGraceDistance\" , \"512\" , CVAR_ARCHIVE ) ; s_alTalkAnims = Cvar_Get ( \"s_alTalkAnims\" , \"160\" , CVAR_ARCHIVE ) ; <S2SV_StartBug> s_alDriver = Cvar_Get ( \"s_alDriver\" , ALDRIVER_DEFAULT , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> s_alInputDevice = Cvar_Get ( \"s_alInputDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_StartBug> s_alDevice = Cvar_Get ( \"s_alDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> if ( ! QAL_Init ( s_alDriver -> string ) ) { # if defined ( _WIN32 ) if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) && ! QAL_Init ( \"OpenAL64.dll\" ) ) { # elif defined ( __APPLE__ ) if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) && ! QAL_Init ( \"/System/Library/Frameworks/OpenAL.framework/OpenAL\" ) ) { # else if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) || ! QAL_Init ( ALDRIVER_DEFAULT ) ) { # endif return qfalse ; } } device = s_alDevice -> string ; if ( device && ! * device ) device = NULL ; inputdevice = s_alInputDevice -> string ; if ( inputdevice && ! * inputdevice ) inputdevice = NULL ; enumeration_all_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATE_ALL_EXT\" ) ; enumeration_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATION_EXT\" ) ; if ( enumeration_ext || enumeration_all_ext ) { char devicenames [ 16384 ] = \"\" ; const char * devicelist ; # ifdef _WIN32 const char * defaultdevice ; # endif int curlen ; if ( enumeration_all_ext ) { devicelist = qalcGetString ( NULL , ALC_ALL_DEVICES_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_ALL_DEVICES_SPECIFIER ) ; # endif } else { devicelist = qalcGetString ( NULL , ALC_DEVICE_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_DEVICE_SPECIFIER ) ; # endif enumeration_ext = qtrue ; } # ifdef _WIN32 if ( ! device && defaultdevice && ! strcmp ( defaultdevice , \"Generic<S2SV_blank>Hardware\" ) ) device = \"Generic<S2SV_blank>Software\" ; # endif if ( devicelist ) { while ( ( curlen = strlen ( devicelist ) ) ) { Q_strcat ( devicenames , sizeof ( devicenames ) , devicelist ) ; Q_strcat ( devicenames , sizeof ( devicenames ) , \"\\\\n\" ) ; devicelist += curlen + 1 ; } } s_alAvailableDevices = Cvar_Get ( \"s_alAvailableDevices\" , devicenames , CVAR_ROM | CVAR_NORESTART ) ; } alDevice = qalcOpenDevice ( device ) ; if ( ! alDevice && device ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , device ) ; alDevice = qalcOpenDevice ( NULL ) ; } if ( ! alDevice ) { QAL_Shutdown ( ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device.\\\\n\" ) ; return qfalse ; } alContext = qalcCreateContext ( alDevice , NULL ) ; if ( ! alContext ) { QAL_Shutdown ( ) ; qalcCloseDevice ( alDevice ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>OpenAL<S2SV_blank>context.\\\\n\" ) ; return qfalse ; } qalcMakeContextCurrent ( alContext ) ; S_AL_BufferInit ( ) ; S_AL_SrcInit ( ) ; Com_Printf ( \"Allocated<S2SV_blank>%d<S2SV_blank>sources.\\\\n\" , srcCount ) ; qalDistanceModel ( AL_INVERSE_DISTANCE_CLAMPED ) ; qalDopplerFactor ( s_alDopplerFactor -> value ) ; qalSpeedOfSound ( s_alDopplerSpeed -> value ) ; # ifdef USE_VOIP s_alCapture = Cvar_Get ( \"s_alCapture\" , \"1\" , CVAR_ARCHIVE | CVAR_LATCH ) ; if ( ! s_alCapture -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>by<S2SV_blank>user<S2SV_blank>(\\'+set<S2SV_blank>s_alCapture<S2SV_blank>1\\'<S2SV_blank>to<S2SV_blank>enable)\\\\n\" ) ; } # if USE_MUMBLE else if ( cl_useMumble -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>for<S2SV_blank>Mumble<S2SV_blank>support\\\\n\" ) ; } # endif else { # ifdef __APPLE__ if ( qalcCaptureOpenDevice == NULL ) # else if ( ! qalcIsExtensionPresent ( NULL , \"ALC_EXT_capture\" ) ) # endif { Com_Printf ( \"No<S2SV_blank>ALC_EXT_capture<S2SV_blank>support,<S2SV_blank>can\\'t<S2SV_blank>record<S2SV_blank>audio.\\\\n\" ) ; } else { char inputdevicenames [ 16384 ] = \"\" ; const char * inputdevicelist ; const char * defaultinputdevice ; int curlen ; capture_ext = qtrue ; inputdevicelist = qalcGetString ( NULL , ALC_CAPTURE_DEVICE_SPECIFIER ) ; defaultinputdevice = qalcGetString ( NULL , ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER ) ; if ( inputdevicelist ) { while ( ( curlen = strlen ( inputdevicelist ) ) ) { Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , inputdevicelist ) ; Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , \"\\\\n\" ) ; inputdevicelist += curlen + 1 ; } } s_alAvailableInputDevices = Cvar_Get ( \"s_alAvailableInputDevices\" , inputdevicenames , CVAR_ROM | CVAR_NORESTART ) ; Com_Printf ( \"OpenAL<S2SV_blank>default<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>is<S2SV_blank>\\'%s\\'\\\\n\" , defaultinputdevice ? defaultinputdevice : \"none\" ) ; alCaptureDevice = qalcCaptureOpenDevice ( inputdevice , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; if ( ! alCaptureDevice && inputdevice ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>Input<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , inputdevice ) ; alCaptureDevice = qalcCaptureOpenDevice ( NULL , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; } Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>%s.\\\\n\" , ( alCaptureDevice == NULL ) ? \"failed<S2SV_blank>to<S2SV_blank>open\" : \"opened\" ) ; } } # endif si -> Shutdown = S_AL_Shutdown ; si -> StartSound = S_AL_StartSound ; si -> StartSoundEx = S_AL_StartSoundEx ; si -> StartLocalSound = S_AL_StartLocalSound ; si -> StartBackgroundTrack = S_AL_StartBackgroundTrack ; si -> StopBackgroundTrack = S_AL_StopBackgroundTrack ; si -> FadeStreamingSound = S_AL_FadeStreamingSound ; si -> FadeAllSounds = S_AL_FadeAllSounds ; si -> StartStreamingSound = S_AL_StartStreamingSound ; si -> StopEntStreamingSound = S_AL_StopEntStreamingSound ; si -> GetVoiceAmplitude = S_AL_GetVoiceAmplitude ; si -> RawSamples = S_AL_RawSamples ; si -> StopAllSounds = S_AL_StopAllSounds ; si -> ClearLoopingSounds = S_AL_ClearLoopingSounds ; si -> AddLoopingSound = S_AL_AddLoopingSound ; si -> AddRealLoopingSound = S_AL_AddRealLoopingSound ; si -> StopLoopingSound = S_AL_StopLoopingSound ; si -> Respatialize = S_AL_Respatialize ; si -> UpdateEntityPosition = S_AL_UpdateEntityPosition ; si -> Update = S_AL_Update ; si -> DisableSounds = S_AL_DisableSounds ; si -> BeginRegistration = S_AL_BeginRegistration ; si -> RegisterSound = S_AL_RegisterSound ; si -> ClearSoundBuffer = S_AL_ClearSoundBuffer ; si -> SoundInfo = S_AL_SoundInfo ; si -> SoundList = S_AL_SoundList ; # ifdef USE_VOIP si -> StartCapture = S_AL_StartCapture ; si -> AvailableCaptureSamples = S_AL_AvailableCaptureSamples ; si -> Capture = S_AL_Capture ; si -> StopCapture = S_AL_StopCapture ; si -> MasterGain = S_AL_MasterGain ; # endif return qtrue ; # else return qfalse ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CVAR_ARCHIVE | CVAR_LATCH | CVAR_PROTECTED <S2SV_ModStart> CVAR_LATCH ) ; if ( COM_CompareExtension ( s_alDriver -> string , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , s_alDriver -> string ) ; return qfalse ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000041\n\n```\nCWE-000 gchar * _rsvg_io_get_file_path ( const gchar * filename , const gchar * base_uri ) { gchar * absolute_filename ; <S2SV_StartBug> if ( g_file_test ( filename , G_FILE_TEST_EXISTS ) || g_path_is_absolute ( filename ) ) { <S2SV_EndBug> absolute_filename = g_strdup ( filename ) ; } else { gchar * tmpcdir ; gchar * base_filename ; if ( base_uri ) { base_filename = g_filename_from_uri ( base_uri , NULL , NULL ) ; if ( base_filename != NULL ) { tmpcdir = g_path_get_dirname ( base_filename ) ; g_free ( base_filename ) ; } else return NULL ; } else tmpcdir = g_get_current_dir ( ) ; absolute_filename = g_build_filename ( tmpcdir , filename , NULL ) ; g_free ( tmpcdir ) ; } return absolute_filename ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> g_path_is_absolute ( filename\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5352\n\n```\nCWE-000 OM_uint32 kg_seal_iov ( OM_uint32 * minor_status , gss_ctx_id_t context_handle , int conf_req_flag , gss_qop_t qop_req , int * conf_state , gss_iov_buffer_desc * iov , int iov_count , int toktype ) { krb5_gss_ctx_id_rec * ctx ; krb5_error_code code ; krb5_context context ; if ( qop_req != 0 ) { * minor_status = ( OM_uint32 ) G_UNKNOWN_QOP ; return GSS_S_FAILURE ; } ctx = ( krb5_gss_ctx_id_rec * ) context_handle ; <S2SV_StartBug> if ( ! ctx -> established ) { <S2SV_EndBug> * minor_status = KG_CTX_INCOMPLETE ; return GSS_S_NO_CONTEXT ; } if ( conf_req_flag && kg_integ_only_iov ( iov , iov_count ) ) { conf_req_flag = FALSE ; } context = ctx -> k5_context ; switch ( ctx -> proto ) { case 0 : code = make_seal_token_v1_iov ( context , ctx , conf_req_flag , conf_state , iov , iov_count , toktype ) ; break ; case 1 : code = gss_krb5int_make_seal_token_v3_iov ( context , ctx , conf_req_flag , conf_state , iov , iov_count , toktype ) ; break ; default : code = G_UNKNOWN_QOP ; break ; } if ( code != 0 ) { * minor_status = code ; save_error_info ( * minor_status , context ) ; return GSS_S_FAILURE ; } * minor_status = 0 ; return GSS_S_COMPLETE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ctx -> terminated ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2548\n\n```\nCWE-20 static void snd_timer_check_master ( struct snd_timer_instance * master ) { struct snd_timer_instance * slave , * tmp ; list_for_each_entry_safe ( slave , tmp , & snd_timer_slave_list , open_list ) { if ( slave -> slave_class == master -> slave_class && slave -> slave_id == master -> slave_id ) { list_move_tail ( & slave -> open_list , & master -> slave_list_head ) ; spin_lock_irq ( & slave_active_lock ) ; <S2SV_StartBug> slave -> master = master ; <S2SV_EndBug> slave -> timer = master -> timer ; if ( slave -> flags & SNDRV_TIMER_IFLG_RUNNING ) list_add_tail ( & slave -> active_list , & master -> slave_active_head ) ; <S2SV_StartBug> spin_unlock_irq ( & slave_active_lock ) ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> slave_active_lock ) ; spin_lock ( & master -> timer -> lock ) ; <S2SV_ModStart> slave_active_head ) ; spin_unlock ( & master -> timer -> lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> static char * print_number ( cJSON * item ) <S2SV_EndBug> { char * str ; double f , f2 ; int64_t i ; str = ( char * ) cJSON_malloc ( 64 ) ; if ( str ) { <S2SV_StartBug> f = item -> valuefloat ; <S2SV_EndBug> i = f ; f2 = i ; <S2SV_StartBug> if ( f2 == f && item -> valueint >= LLONG_MIN && item -> valueint <= LLONG_MAX ) <S2SV_EndBug> sprintf ( str , \"%lld\" , ( long long ) item -> valueint ) ; else sprintf ( str , \"%g\" , item -> valuefloat ) ; } return str ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cJSON * item , printbuffer * p ) { char * str = 0 ; double d <S2SV_ModEnd> = item -> <S2SV_ModStart> = item -> valuedouble ; if ( d == 0 ) { if ( p ) str = ensure ( p , 2 ) ; else str = ( char * ) cJSON_malloc ( 2 ) ; if ( str ) strcpy ( str , \"0\" ) ; } else if ( fabs ( ( ( double ) <S2SV_ModEnd> item -> valueint <S2SV_ModStart> item -> valueint ) - d ) <= DBL_EPSILON && d <= LLONG_MAX && d >= LLONG_MIN ) { if ( p ) str = ensure ( p , 64 ) ; else str = ( char * ) cJSON_malloc ( 64 ) ; if ( str ) sprintf ( str , \"%lld\" , ( long long ) <S2SV_ModEnd> item -> valueint <S2SV_ModStart> item -> valueint ) ; } else { if ( p ) str = ensure ( p , 64 ) ; else str = ( char * ) cJSON_malloc ( 64 ) ; if ( str ) { if ( fpclassify ( d ) != FP_ZERO && ! isnormal ( d ) ) sprintf ( str , \"null\" ) ; else if ( fabs ( floor ( d ) - d ) <= DBL_EPSILON && fabs ( d ) < 1.0e60 ) sprintf ( str , \"%.0f\" , d ) ; else if ( fabs ( d ) < 1.0e-6 || fabs ( d ) > 1.0e9 ) sprintf ( str , \"%e\" , d ) ; else sprintf ( str , \"%f\" , d ) ; } <S2SV_ModEnd> } return str\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static uint32_t scsi_init_iovec ( SCSIDiskReq * r ) <S2SV_StartBug> { <S2SV_EndBug> <S2SV_StartBug> r -> iov . iov_len = MIN ( r -> sector_count * 512 , SCSI_DMA_BUF_SIZE ) ; <S2SV_EndBug> qemu_iovec_init_external ( & r -> qiov , & r -> iov , 1 ) ; return r -> qiov . size / 512 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> r ) { SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; if ( ! r -> iov . iov_base ) { r -> buflen = SCSI_DMA_BUF_SIZE ; r -> iov . iov_base = qemu_blockalign ( s -> bs , r -> buflen ) ; } <S2SV_ModStart> * 512 , r -> buflen <S2SV_ModEnd> ) ; qemu_iovec_init_external\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 static int __ext4_set_acl ( handle_t * handle , struct inode * inode , int type , struct posix_acl * acl ) { int name_index ; void * value = NULL ; size_t size = 0 ; int error ; switch ( type ) { case ACL_TYPE_ACCESS : name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; else { inode -> i_ctime = ext4_current_time ( inode ) ; ext4_mark_inode_dirty ( handle , inode ) ; <S2SV_StartBug> if ( error == 0 ) <S2SV_EndBug> acl = NULL ; } } break ; case ACL_TYPE_DEFAULT : name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = ext4_acl_to_disk ( acl , & size ) ; if ( IS_ERR ( value ) ) return ( int ) PTR_ERR ( value ) ; } error = ext4_xattr_set_handle ( handle , inode , name_index , \"\" , value , size , 0 ) ; kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( error ) return error ; <S2SV_ModEnd> inode -> i_ctime <S2SV_ModStart> inode ) ; <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static int do_ip_getsockopt ( struct sock * sk , int level , int optname , char __user * optval , int __user * optlen ) { struct inet_sock * inet = inet_sk ( sk ) ; int val ; int len ; if ( level != SOL_IP ) return - EOPNOTSUPP ; if ( ip_mroute_opt ( optname ) ) return ip_mroute_getsockopt ( sk , optname , optval , optlen ) ; if ( get_user ( len , optlen ) ) return - EFAULT ; if ( len < 0 ) return - EINVAL ; lock_sock ( sk ) ; switch ( optname ) { case IP_OPTIONS : { unsigned char optbuf [ sizeof ( struct ip_options ) + 40 ] ; struct ip_options * opt = ( struct ip_options * ) optbuf ; <S2SV_StartBug> opt -> optlen = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( inet -> opt ) <S2SV_EndBug> memcpy ( optbuf , inet -> opt , sizeof ( struct ip_options ) + inet -> opt -> optlen ) ; release_sock ( sk ) ; if ( opt -> optlen == 0 ) return put_user ( 0 , optlen ) ; ip_options_undo ( opt ) ; len = min_t ( unsigned int , len , opt -> optlen ) ; if ( put_user ( len , optlen ) ) return - EFAULT ; if ( copy_to_user ( optval , opt -> __data , len ) ) return - EFAULT ; return 0 ; } case IP_PKTINFO : val = ( inet -> cmsg_flags & IP_CMSG_PKTINFO ) != 0 ; break ; case IP_RECVTTL : val = ( inet -> cmsg_flags & IP_CMSG_TTL ) != 0 ; break ; case IP_RECVTOS : val = ( inet -> cmsg_flags & IP_CMSG_TOS ) != 0 ; break ; case IP_RECVOPTS : val = ( inet -> cmsg_flags & IP_CMSG_RECVOPTS ) != 0 ; break ; case IP_RETOPTS : val = ( inet -> cmsg_flags & IP_CMSG_RETOPTS ) != 0 ; break ; case IP_PASSSEC : val = ( inet -> cmsg_flags & IP_CMSG_PASSSEC ) != 0 ; break ; case IP_RECVORIGDSTADDR : val = ( inet -> cmsg_flags & IP_CMSG_ORIGDSTADDR ) != 0 ; break ; case IP_TOS : val = inet -> tos ; break ; case IP_TTL : val = ( inet -> uc_ttl == - 1 ? sysctl_ip_default_ttl : inet -> uc_ttl ) ; break ; case IP_HDRINCL : val = inet -> hdrincl ; break ; case IP_NODEFRAG : val = inet -> nodefrag ; break ; case IP_MTU_DISCOVER : val = inet -> pmtudisc ; break ; case IP_MTU : { struct dst_entry * dst ; val = 0 ; dst = sk_dst_get ( sk ) ; if ( dst ) { val = dst_mtu ( dst ) ; dst_release ( dst ) ; } if ( ! val ) { release_sock ( sk ) ; return - ENOTCONN ; } break ; } case IP_RECVERR : val = inet -> recverr ; break ; case IP_MULTICAST_TTL : val = inet -> mc_ttl ; break ; case IP_MULTICAST_LOOP : val = inet -> mc_loop ; break ; case IP_MULTICAST_IF : { struct in_addr addr ; len = min_t ( unsigned int , len , sizeof ( struct in_addr ) ) ; addr . s_addr = inet -> mc_addr ; release_sock ( sk ) ; if ( put_user ( len , optlen ) ) return - EFAULT ; if ( copy_to_user ( optval , & addr , len ) ) return - EFAULT ; return 0 ; } case IP_MSFILTER : { struct ip_msfilter msf ; int err ; if ( len < IP_MSFILTER_SIZE ( 0 ) ) { release_sock ( sk ) ; return - EINVAL ; } if ( copy_from_user ( & msf , optval , IP_MSFILTER_SIZE ( 0 ) ) ) { release_sock ( sk ) ; return - EFAULT ; } err = ip_mc_msfget ( sk , & msf , ( struct ip_msfilter __user * ) optval , optlen ) ; release_sock ( sk ) ; return err ; } case MCAST_MSFILTER : { struct group_filter gsf ; int err ; if ( len < GROUP_FILTER_SIZE ( 0 ) ) { release_sock ( sk ) ; return - EINVAL ; } if ( copy_from_user ( & gsf , optval , GROUP_FILTER_SIZE ( 0 ) ) ) { release_sock ( sk ) ; return - EFAULT ; } err = ip_mc_gsfget ( sk , & gsf , ( struct group_filter __user * ) optval , optlen ) ; release_sock ( sk ) ; return err ; } case IP_MULTICAST_ALL : val = inet -> mc_all ; break ; case IP_PKTOPTIONS : { struct msghdr msg ; release_sock ( sk ) ; if ( sk -> sk_type != SOCK_STREAM ) return - ENOPROTOOPT ; msg . msg_control = optval ; msg . msg_controllen = len ; msg . msg_flags = 0 ; if ( inet -> cmsg_flags & IP_CMSG_PKTINFO ) { struct in_pktinfo info ; info . ipi_addr . s_addr = inet -> inet_rcv_saddr ; info . ipi_spec_dst . s_addr = inet -> inet_rcv_saddr ; info . ipi_ifindex = inet -> mc_index ; put_cmsg ( & msg , SOL_IP , IP_PKTINFO , sizeof ( info ) , & info ) ; } if ( inet -> cmsg_flags & IP_CMSG_TTL ) { int hlim = inet -> mc_ttl ; put_cmsg ( & msg , SOL_IP , IP_TTL , sizeof ( hlim ) , & hlim ) ; } len -= msg . msg_controllen ; return put_user ( len , optlen ) ; } case IP_FREEBIND : val = inet -> freebind ; break ; case IP_TRANSPARENT : val = inet -> transparent ; break ; case IP_MINTTL : val = inet -> min_ttl ; break ; default : release_sock ( sk ) ; return - ENOPROTOOPT ; } release_sock ( sk ) ; if ( len < sizeof ( int ) && len > 0 && val >= 0 && val <= 255 ) { unsigned char ucval = ( unsigned char ) val ; len = 1 ; if ( put_user ( len , optlen ) ) return - EFAULT ; if ( copy_to_user ( optval , & ucval , 1 ) ) return - EFAULT ; } else { len = min_t ( unsigned int , sizeof ( int ) , len ) ; if ( put_user ( len , optlen ) ) return - EFAULT ; if ( copy_to_user ( optval , & val , len ) ) return - EFAULT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) optbuf ; struct ip_options_rcu * inet_opt ; inet_opt = rcu_dereference_protected ( inet -> inet_opt , sock_owned_by_user ( sk ) ) ; <S2SV_ModStart> ; if ( inet_opt ) memcpy ( optbuf , & inet_opt -> opt , sizeof ( struct ip_options ) + inet_opt -> opt . <S2SV_ModEnd> optlen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0077\n\n```\nCWE-787 static int get_rx_bufs ( struct vhost_virtqueue * vq , struct vring_used_elem * heads , int datalen , unsigned * iovcount , struct vhost_log * log , unsigned * log_num , unsigned int quota ) { unsigned int out , in ; int seg = 0 ; int headcount = 0 ; unsigned d ; int r , nlogs = 0 ; while ( datalen > 0 && headcount < quota ) { if ( unlikely ( seg >= UIO_MAXIOV ) ) { r = - ENOBUFS ; goto err ; } d = vhost_get_vq_desc ( vq -> dev , vq , vq -> iov + seg , ARRAY_SIZE ( vq -> iov ) - seg , & out , & in , log , log_num ) ; if ( d == vq -> num ) { r = 0 ; goto err ; } if ( unlikely ( out || in <= 0 ) ) { vq_err ( vq , \"unexpected<S2SV_blank>descriptor<S2SV_blank>format<S2SV_blank>for<S2SV_blank>RX:<S2SV_blank>\" \"out<S2SV_blank>%d,<S2SV_blank>in<S2SV_blank>%d\\\\n\" , out , in ) ; r = - EINVAL ; goto err ; } if ( unlikely ( log ) ) { nlogs += * log_num ; log += * log_num ; } heads [ headcount ] . id = d ; heads [ headcount ] . len = iov_length ( vq -> iov + seg , in ) ; datalen -= heads [ headcount ] . len ; ++ headcount ; seg += in ; } heads [ headcount - 1 ] . len += datalen ; * iovcount = seg ; if ( unlikely ( log ) ) * log_num = nlogs ; <S2SV_StartBug> return headcount ; <S2SV_EndBug> err : vhost_discard_vq_desc ( vq , headcount ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = nlogs ; if ( unlikely ( datalen > 0 ) ) { r = UIO_MAXIOV + 1 ; goto err ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0591\n\n```\nCWE-119 WORD32 ih264d_decode_gaps_in_frame_num ( dec_struct_t * ps_dec , UWORD16 u2_frame_num ) { UWORD32 u4_next_frm_num , u4_start_frm_num ; UWORD32 u4_max_frm_num ; pocstruct_t s_tmp_poc ; WORD32 i4_poc ; dec_slice_params_t * ps_cur_slice ; dec_pic_params_t * ps_pic_params ; WORD8 i1_gap_idx ; WORD32 * i4_gaps_start_frm_num ; dpb_manager_t * ps_dpb_mgr ; WORD32 i4_frame_gaps ; WORD8 * pi1_gaps_per_seq ; WORD32 ret ; ps_cur_slice = ps_dec -> ps_cur_slice ; if ( ps_cur_slice -> u1_field_pic_flag ) { if ( ps_dec -> u2_prev_ref_frame_num == u2_frame_num ) return 0 ; } u4_next_frm_num = ps_dec -> u2_prev_ref_frame_num + 1 ; u4_max_frm_num = ps_dec -> ps_cur_sps -> u2_u4_max_pic_num_minus1 + 1 ; if ( u4_next_frm_num >= u4_max_frm_num ) { u4_next_frm_num -= u4_max_frm_num ; } if ( u4_next_frm_num == u2_frame_num ) { return ( 0 ) ; } if ( ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) && ( u4_next_frm_num >= u2_frame_num ) ) { return ( 0 ) ; } u4_start_frm_num = u4_next_frm_num ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = 0 ; ps_cur_slice = ps_dec -> ps_cur_slice ; ps_pic_params = ps_dec -> ps_cur_pps ; <S2SV_StartBug> ps_cur_slice -> u1_field_pic_flag = 0 ; <S2SV_EndBug> i4_frame_gaps = 0 ; ps_dpb_mgr = ps_dec -> ps_dpb_mgr ; i4_gaps_start_frm_num = ps_dpb_mgr -> ai4_gaps_start_frm_num ; for ( i1_gap_idx = 0 ; i1_gap_idx < MAX_FRAMES ; i1_gap_idx ++ ) { if ( INVALID_FRAME_NUM == i4_gaps_start_frm_num [ i1_gap_idx ] ) break ; } if ( MAX_FRAMES == i1_gap_idx ) { UWORD32 i4_error_code ; i4_error_code = ERROR_DBP_MANAGER_T ; return i4_error_code ; } i4_poc = 0 ; i4_gaps_start_frm_num [ i1_gap_idx ] = u4_start_frm_num ; ps_dpb_mgr -> ai4_gaps_end_frm_num [ i1_gap_idx ] = u2_frame_num - 1 ; pi1_gaps_per_seq = ps_dpb_mgr -> ai1_gaps_per_seq ; pi1_gaps_per_seq [ i1_gap_idx ] = 0 ; while ( u4_next_frm_num != u2_frame_num ) { ih264d_delete_nonref_nondisplay_pics ( ps_dpb_mgr ) ; if ( ps_pic_params -> ps_sps -> u1_pic_order_cnt_type ) { ret = ih264d_decode_pic_order_cnt ( 0 , u4_next_frm_num , & ps_dec -> s_prev_pic_poc , & s_tmp_poc , ps_cur_slice , ps_pic_params , 1 , 0 , 0 , & i4_poc ) ; if ( ret != OK ) return ret ; if ( i4_poc >= ps_dec -> i4_max_poc ) ps_dec -> i4_max_poc = i4_poc ; if ( i4_poc == 0 ) { ps_dec -> i4_prev_max_display_seq = ps_dec -> i4_prev_max_display_seq + ps_dec -> i4_max_poc + ps_dec -> u1_max_dec_frame_buffering + 1 ; ps_dec -> i4_max_poc = 0 ; } ps_cur_slice -> u1_mmco_equalto5 = 0 ; ps_cur_slice -> u2_frame_num = u4_next_frm_num ; } if ( ps_dpb_mgr -> i1_poc_buf_id_entries >= ps_dec -> u1_max_dec_frame_buffering ) { ret = ih264d_assign_display_seq ( ps_dec ) ; if ( ret != OK ) return ret ; } ret = ih264d_insert_pic_in_display_list ( ps_dec -> ps_dpb_mgr , ( WORD8 ) DO_NOT_DISP , ( WORD32 ) ( ps_dec -> i4_prev_max_display_seq + i4_poc ) , u4_next_frm_num ) ; if ( ret != OK ) return ret ; pi1_gaps_per_seq [ i1_gap_idx ] ++ ; ret = ih264d_do_mmco_for_gaps ( ps_dpb_mgr , ps_dec -> ps_cur_sps -> u1_num_ref_frames ) ; if ( ret != OK ) return ret ; ih264d_delete_nonref_nondisplay_pics ( ps_dpb_mgr ) ; u4_next_frm_num ++ ; if ( u4_next_frm_num >= u4_max_frm_num ) { u4_next_frm_num -= u4_max_frm_num ; } i4_frame_gaps ++ ; } return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ps_cur_pps ; <S2SV_ModEnd> i4_frame_gaps = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7913\n\n```\nCWE-416 static int xc2028_set_config ( struct dvb_frontend * fe , void * priv_cfg ) { struct xc2028_data * priv = fe -> tuner_priv ; struct xc2028_ctrl * p = priv_cfg ; int rc = 0 ; tuner_dbg ( \"%s<S2SV_blank>called\\\\n\" , __func__ ) ; mutex_lock ( & priv -> lock ) ; kfree ( priv -> ctrl . fname ) ; <S2SV_StartBug> memcpy ( & priv -> ctrl , p , sizeof ( priv -> ctrl ) ) ; <S2SV_EndBug> if ( p -> fname ) { priv -> ctrl . fname = kstrdup ( p -> fname , GFP_KERNEL ) ; if ( priv -> ctrl . fname == NULL ) <S2SV_StartBug> rc = - ENOMEM ; <S2SV_EndBug> } if ( ! firmware_name [ 0 ] && p -> fname && priv -> fname && strcmp ( p -> fname , priv -> fname ) ) free_firmware ( priv ) ; if ( priv -> ctrl . max_len < 9 ) priv -> ctrl . max_len = 13 ; if ( priv -> state == XC2028_NO_FIRMWARE ) { if ( ! firmware_name [ 0 ] ) priv -> fname = priv -> ctrl . fname ; else priv -> fname = firmware_name ; rc = request_firmware_nowait ( THIS_MODULE , 1 , priv -> fname , priv -> i2c_props . adap -> dev . parent , GFP_KERNEL , fe , load_firmware_cb ) ; if ( rc < 0 ) { tuner_err ( \"Failed<S2SV_blank>to<S2SV_blank>request<S2SV_blank>firmware<S2SV_blank>%s\\\\n\" , priv -> fname ) ; priv -> state = XC2028_NODEV ; } else priv -> state = XC2028_WAITING_FIRMWARE ; } mutex_unlock ( & priv -> lock ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fname ) ; priv -> ctrl . fname = NULL ; <S2SV_ModStart> == NULL ) return <S2SV_ModEnd> - ENOMEM ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16931\n\n```\nCWE-119 static const xmlChar * xmlParseNameComplex ( xmlParserCtxtPtr ctxt ) { int len = 0 , l ; int c ; int count = 0 ; # ifdef DEBUG nbParseNameComplex ++ ; # endif GROW ; if ( ctxt -> instate == XML_PARSER_EOF ) return ( NULL ) ; c = CUR_CHAR ( l ) ; if ( ( ctxt -> options & XML_PARSE_OLD10 ) == 0 ) { if ( ( c == '<S2SV_blank>' ) || ( c == '>' ) || ( c == '/' ) || ( ! ( ( ( c >= 'a' ) && ( c <= 'z' ) ) || ( ( c >= 'A' ) && ( c <= 'Z' ) ) || ( c == '_' ) || ( c == ':' ) || ( ( c >= 0xC0 ) && ( c <= 0xD6 ) ) || ( ( c >= 0xD8 ) && ( c <= 0xF6 ) ) || ( ( c >= 0xF8 ) && ( c <= 0x2FF ) ) || ( ( c >= 0x370 ) && ( c <= 0x37D ) ) || ( ( c >= 0x37F ) && ( c <= 0x1FFF ) ) || ( ( c >= 0x200C ) && ( c <= 0x200D ) ) || ( ( c >= 0x2070 ) && ( c <= 0x218F ) ) || ( ( c >= 0x2C00 ) && ( c <= 0x2FEF ) ) || ( ( c >= 0x3001 ) && ( c <= 0xD7FF ) ) || ( ( c >= 0xF900 ) && ( c <= 0xFDCF ) ) || ( ( c >= 0xFDF0 ) && ( c <= 0xFFFD ) ) || ( ( c >= 0x10000 ) && ( c <= 0xEFFFF ) ) ) ) ) { return ( NULL ) ; } len += l ; NEXTL ( l ) ; c = CUR_CHAR ( l ) ; while ( ( c != '<S2SV_blank>' ) && ( c != '>' ) && ( c != '/' ) && ( ( ( c >= 'a' ) && ( c <= 'z' ) ) || ( ( c >= 'A' ) && ( c <= 'Z' ) ) || ( ( c >= '0' ) && ( c <= '9' ) ) || ( c == '_' ) || ( c == ':' ) || ( c == '-' ) || ( c == '.' ) || ( c == 0xB7 ) || ( ( c >= 0xC0 ) && ( c <= 0xD6 ) ) || ( ( c >= 0xD8 ) && ( c <= 0xF6 ) ) || ( ( c >= 0xF8 ) && ( c <= 0x2FF ) ) || ( ( c >= 0x300 ) && ( c <= 0x36F ) ) || ( ( c >= 0x370 ) && ( c <= 0x37D ) ) || ( ( c >= 0x37F ) && ( c <= 0x1FFF ) ) || ( ( c >= 0x200C ) && ( c <= 0x200D ) ) || ( ( c >= 0x203F ) && ( c <= 0x2040 ) ) || ( ( c >= 0x2070 ) && ( c <= 0x218F ) ) || ( ( c >= 0x2C00 ) && ( c <= 0x2FEF ) ) || ( ( c >= 0x3001 ) && ( c <= 0xD7FF ) ) || ( ( c >= 0xF900 ) && ( c <= 0xFDCF ) ) || ( ( c >= 0xFDF0 ) && ( c <= 0xFFFD ) ) || ( ( c >= 0x10000 ) && ( c <= 0xEFFFF ) ) ) ) { if ( count ++ > XML_PARSER_CHUNK_SIZE ) { count = 0 ; GROW ; if ( ctxt -> instate == XML_PARSER_EOF ) return ( NULL ) ; } len += l ; NEXTL ( l ) ; c = CUR_CHAR ( l ) ; } } else { if ( ( c == '<S2SV_blank>' ) || ( c == '>' ) || ( c == '/' ) || ( ! IS_LETTER ( c ) && ( c != '_' ) && ( c != ':' ) ) ) { return ( NULL ) ; } len += l ; NEXTL ( l ) ; c = CUR_CHAR ( l ) ; while ( ( c != '<S2SV_blank>' ) && ( c != '>' ) && ( c != '/' ) && ( ( IS_LETTER ( c ) ) || ( IS_DIGIT ( c ) ) || ( c == '.' ) || ( c == '-' ) || ( c == '_' ) || ( c == ':' ) || ( IS_COMBINING ( c ) ) || ( IS_EXTENDER ( c ) ) ) ) { if ( count ++ > XML_PARSER_CHUNK_SIZE ) { count = 0 ; GROW ; if ( ctxt -> instate == XML_PARSER_EOF ) return ( NULL ) ; } len += l ; NEXTL ( l ) ; c = CUR_CHAR ( l ) ; <S2SV_StartBug> if ( c == 0 ) { <S2SV_EndBug> count = 0 ; GROW ; if ( ctxt -> instate == XML_PARSER_EOF ) return ( NULL ) ; c = CUR_CHAR ( l ) ; } } } if ( ( len > XML_MAX_NAME_LENGTH ) && ( ( ctxt -> options & XML_PARSE_HUGE ) == 0 ) ) { <S2SV_StartBug> xmlFatalErr ( ctxt , XML_ERR_NAME_TOO_LONG , \"Name\" ) ; <S2SV_EndBug> return ( NULL ) ; } if ( ( * ctxt -> input -> cur == '\\\\n' ) && ( ctxt -> input -> cur [ - 1 ] == '\\\\r' ) ) return ( xmlDictLookup ( ctxt -> dict , ctxt -> input -> cur - ( len + 1 ) , len ) ) ; return ( xmlDictLookup ( ctxt -> dict , ctxt -> input -> cur - len , len ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> l ) ; <S2SV_ModEnd> } } if <S2SV_ModStart> XML_ERR_NAME_TOO_LONG , \"Name\" ) ; return ( NULL ) ; } if ( ctxt -> input -> cur - ctxt -> input -> base < len ) { xmlFatalErr ( ctxt , XML_ERR_INTERNAL_ERROR , \"unexpected<S2SV_blank>change<S2SV_blank>of<S2SV_blank>input<S2SV_blank>buffer\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11089\n\n```\nCWE-125 static UINT parallel_process_irp_create ( PARALLEL_DEVICE * parallel , IRP * irp ) { char * path = NULL ; int status ; <S2SV_StartBug> UINT32 PathLength ; <S2SV_EndBug> <S2SV_StartBug> Stream_Seek ( irp -> input , 28 ) ; <S2SV_EndBug> Stream_Read_UINT32 ( irp -> input , PathLength ) ; <S2SV_StartBug> status = ConvertFromUnicode ( CP_UTF8 , 0 , ( WCHAR * ) Stream_Pointer ( irp -> input ) , PathLength / 2 , <S2SV_EndBug> & path , 0 , NULL , NULL ) ; if ( status < 1 ) if ( ! ( path = ( char * ) calloc ( 1 , 1 ) ) ) { WLog_ERR ( TAG , \"calloc<S2SV_blank>failed!\" ) ; return CHANNEL_RC_NO_MEMORY ; } parallel -> id = irp -> devman -> id_sequence ++ ; parallel -> file = open ( parallel -> path , O_RDWR ) ; if ( parallel -> file < 0 ) { irp -> IoStatus = STATUS_ACCESS_DENIED ; parallel -> id = 0 ; } else { if ( fcntl ( parallel -> file , F_SETFL , O_NONBLOCK ) == - 1 ) { } } Stream_Write_UINT32 ( irp -> output , parallel -> id ) ; Stream_Write_UINT8 ( irp -> output , 0 ) ; free ( path ) ; return irp -> Complete ( irp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int status ; WCHAR * ptr ; <S2SV_ModStart> UINT32 PathLength ; if ( ! Stream_SafeSeek <S2SV_ModEnd> ( irp -> <S2SV_ModStart> , 28 ) ) return ERROR_INVALID_DATA ; if ( Stream_GetRemainingLength ( irp -> input ) < 4 ) return ERROR_INVALID_DATA <S2SV_ModStart> PathLength ) ; ptr = ( WCHAR * ) Stream_Pointer ( irp -> input ) ; if ( ! Stream_SafeSeek ( irp -> input , PathLength ) ) return ERROR_INVALID_DATA ; <S2SV_ModStart> , 0 , ptr <S2SV_ModEnd> , PathLength /\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7525\n\n```\nCWE-125 static inline size_t GetPSDRowSize ( Image * image ) { if ( image -> depth == 1 ) <S2SV_StartBug> return ( ( image -> columns + 7 ) / 8 ) ; <S2SV_EndBug> else return ( image -> columns * GetPSDPacketSize ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ( ( ( <S2SV_ModStart> ) / 8 ) * GetPSDPacketSize ( image )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-23930\n\n```\nCWE-476 static void nhmldump_send_header ( GF_NHMLDumpCtx * ctx ) { GF_FilterPacket * dst_pck ; char nhml [ 1024 ] ; u32 size ; u8 * output ; const GF_PropertyValue * p ; ctx -> szRootName = \"NHNTStream\" ; if ( ctx -> dims ) { ctx -> szRootName = \"DIMSStream\" ; } if ( ! ctx -> filep ) { sprintf ( nhml , \"<?xml<S2SV_blank>version=\\\\\"1.0\\\\\"<S2SV_blank>encoding=\\\\\"UTF-8\\\\\"<S2SV_blank>?>\\\\n\" ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } sprintf ( nhml , \"<%s<S2SV_blank>version=\\\\\"1.0\\\\\"<S2SV_blank>\" , ctx -> szRootName ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; NHML_PRINT_UINT ( GF_PROP_PID_ID , NULL , \"trackID\" ) NHML_PRINT_UINT ( GF_PROP_PID_TIMESCALE , NULL , \"timeScale\" ) p = gf_filter_pid_get_property ( ctx -> ipid , GF_PROP_PID_IN_IOD ) ; if ( p && p -> value . boolean ) { sprintf ( nhml , \"inRootOD=\\\\\"yes\\\\\"<S2SV_blank>\" ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } if ( ctx -> oti && ( ctx -> oti < GF_CODECID_LAST_MPEG4_MAPPING ) ) { sprintf ( nhml , \"streamType=\\\\\"%d\\\\\"<S2SV_blank>objectTypeIndication=\\\\\"%d\\\\\"<S2SV_blank>\" , ctx -> streamtype , ctx -> oti ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } else { p = gf_filter_pid_get_property ( ctx -> ipid , GF_PROP_PID_SUBTYPE ) ; if ( p ) { sprintf ( nhml , \"%s=\\\\\"%s\\\\\"<S2SV_blank>\" , \"mediaType\" , gf_4cc_to_str ( p -> value . uint ) ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; NHML_PRINT_4CC ( GF_PROP_PID_ISOM_SUBTYPE , \"mediaSubType\" , \"mediaSubType\" ) } else { NHML_PRINT_4CC ( GF_PROP_PID_CODECID , NULL , \"codecID\" ) } } if ( ctx -> w && ctx -> h ) { switch ( ctx -> streamtype ) { case GF_STREAM_VISUAL : case GF_STREAM_SCENE : sprintf ( nhml , \"width=\\\\\"%d\\\\\"<S2SV_blank>height=\\\\\"%d\\\\\"<S2SV_blank>\" , ctx -> w , ctx -> h ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; break ; default : break ; } } else if ( ctx -> sr && ctx -> chan ) { sprintf ( nhml , \"sampleRate=\\\\\"%d\\\\\"<S2SV_blank>numChannels=\\\\\"%d\\\\\"<S2SV_blank>\" , ctx -> sr , ctx -> chan ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; sprintf ( nhml , \"sampleRate=\\\\\"%d\\\\\"<S2SV_blank>numChannels=\\\\\"%d\\\\\"<S2SV_blank>\" , ctx -> sr , ctx -> chan ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; <S2SV_StartBug> p = gf_filter_pid_get_property ( ctx -> ipid , GF_PROP_PID_AUDIO_FORMAT ) ; <S2SV_EndBug> sprintf ( nhml , \"bitsPerSample=\\\\\"%d\\\\\"<S2SV_blank>\" , gf_audio_fmt_bit_depth ( p -> value . uint ) ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } NHML_PRINT_4CC ( 0 , \"codec_vendor\" , \"codecVendor\" ) NHML_PRINT_UINT ( 0 , \"codec_version\" , \"codecVersion\" ) NHML_PRINT_UINT ( 0 , \"codec_revision\" , \"codecRevision\" ) NHML_PRINT_STRING ( 0 , \"compressor_name\" , \"compressorName\" ) NHML_PRINT_UINT ( 0 , \"temporal_quality\" , \"temporalQuality\" ) NHML_PRINT_UINT ( 0 , \"spatial_quality\" , \"spatialQuality\" ) NHML_PRINT_UINT ( 0 , \"hres\" , \"horizontalResolution\" ) NHML_PRINT_UINT ( 0 , \"vres\" , \"verticalResolution\" ) NHML_PRINT_UINT ( GF_PROP_PID_BIT_DEPTH_Y , NULL , \"bitDepth\" ) NHML_PRINT_STRING ( 0 , \"meta:xmlns\" , \"xml_namespace\" ) NHML_PRINT_STRING ( 0 , \"meta:schemaloc\" , \"xml_schema_location\" ) NHML_PRINT_STRING ( 0 , \"meta:mime\" , \"mime_type\" ) NHML_PRINT_STRING ( 0 , \"meta:config\" , \"config\" ) NHML_PRINT_STRING ( 0 , \"meta:aux_mimes\" , \"aux_mime_type\" ) if ( ctx -> codecid == GF_CODECID_DIMS ) { if ( gf_filter_pid_get_property_str ( ctx -> ipid , \"meta:xmlns\" ) == NULL ) { sprintf ( nhml , \"xmlns=\\\\\"http://www.3gpp.org/richmedia\\\\\"<S2SV_blank>\" ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } NHML_PRINT_UINT ( 0 , \"dims:profile\" , \"profile\" ) NHML_PRINT_UINT ( 0 , \"dims:level\" , \"level\" ) NHML_PRINT_UINT ( 0 , \"dims:pathComponents\" , \"pathComponents\" ) p = gf_filter_pid_get_property_str ( ctx -> ipid , \"dims:fullRequestHost\" ) ; if ( p ) { sprintf ( nhml , \"useFullRequestHost=\\\\\"%s\\\\\"<S2SV_blank>\" , p -> value . boolean ? \"yes\" : \"no\" ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } p = gf_filter_pid_get_property_str ( ctx -> ipid , \"dims:streamType\" ) ; if ( p ) { sprintf ( nhml , \"stream_type=\\\\\"%s\\\\\"<S2SV_blank>\" , p -> value . boolean ? \"primary\" : \"secondary\" ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } p = gf_filter_pid_get_property_str ( ctx -> ipid , \"dims:redundant\" ) ; if ( p ) { sprintf ( nhml , \"contains_redundant=\\\\\"%s\\\\\"<S2SV_blank>\" , ( p -> value . uint == 1 ) ? \"main\" : ( ( p -> value . uint == 1 ) ? \"redundant\" : \"main+redundant\" ) ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } NHML_PRINT_UINT ( 0 , \"dims:scriptTypes\" , \"scriptTypes\" ) } if ( ctx -> opid_info ) { sprintf ( nhml , \"specificInfoFile=\\\\\"%s\\\\\"<S2SV_blank>\" , gf_file_basename ( ctx -> info_file ) ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; dst_pck = gf_filter_pck_new_shared ( ctx -> opid_info , ctx -> dcfg , ctx -> dcfg_size , NULL ) ; gf_filter_pck_set_framing ( dst_pck , GF_TRUE , GF_TRUE ) ; gf_filter_pck_set_readonly ( dst_pck ) ; gf_filter_pck_send ( dst_pck ) ; } NHML_PRINT_STRING ( 0 , \"meta:encoding\" , \"encoding\" ) NHML_PRINT_STRING ( 0 , \"meta:contentEncoding\" , \"content_encoding\" ) ctx -> uncompress = GF_FALSE ; if ( p ) { if ( ! strcmp ( p -> value . string , \"deflate\" ) ) ctx -> uncompress = GF_TRUE ; else { GF_LOG ( GF_LOG_ERROR , GF_LOG_AUTHOR , ( \"[NHMLMx]<S2SV_blank>content_encoding<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>supported\\\\n\" , p -> value . string ) ) ; } } if ( ctx -> opid_mdia ) { sprintf ( nhml , \"baseMediaFile=\\\\\"%s\\\\\"<S2SV_blank>\" , gf_file_basename ( ctx -> media_file ) ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; } sprintf ( nhml , \">\\\\n\" ) ; gf_bs_write_data ( ctx -> bs_w , nhml , ( u32 ) strlen ( nhml ) ) ; gf_bs_get_content_no_truncate ( ctx -> bs_w , & ctx -> nhml_buffer , & size , & ctx -> nhml_buffer_size ) ; if ( ctx -> filep ) { gf_fwrite ( ctx -> nhml_buffer , size , ctx -> filep ) ; return ; } dst_pck = gf_filter_pck_new_alloc ( ctx -> opid_nhml , size , & output ) ; memcpy ( output , ctx -> nhml_buffer , size ) ; gf_filter_pck_set_framing ( dst_pck , GF_TRUE , GF_FALSE ) ; gf_filter_pck_send ( dst_pck ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> GF_PROP_PID_AUDIO_FORMAT ) ; if ( p )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20911\n\n```\nCWE-835 int dwg_decode_add_object ( Dwg_Data * restrict dwg , Bit_Chain * dat , Bit_Chain * hdl_dat , long unsigned int address ) { long unsigned int objpos , restartpos ; Bit_Chain abs_dat = { NULL } ; unsigned char previous_bit ; Dwg_Object * restrict obj ; BITCODE_BL num = dwg -> num_objects ; int error = 0 ; int realloced = 0 ; abs_dat = * dat ; dat -> byte = address ; dat -> bit = 0 ; realloced = dwg_add_object ( dwg ) ; if ( realloced > 0 ) { * dat = abs_dat ; return realloced ; } obj = & dwg -> object [ num ] ; LOG_INFO ( \"==========================================\\\\n\" \"Object<S2SV_blank>number:<S2SV_blank>%lu/%lX\" , ( unsigned long ) num , ( unsigned long ) num ) obj -> size = bit_read_MS ( dat ) ; LOG_INFO ( \",<S2SV_blank>Size:<S2SV_blank>%d<S2SV_blank>[MS]\" , obj -> size ) SINCE ( R_2010 ) { obj -> handlestream_size = bit_read_UMC ( dat ) ; LOG_INFO ( \",<S2SV_blank>Hdlsize:<S2SV_blank>\" FORMAT_UMC \"<S2SV_blank>[UMC]<S2SV_blank>\" , obj -> handlestream_size ) ; obj -> bitsize = obj -> size * 8 - obj -> handlestream_size ; } objpos = bit_position ( dat ) ; obj -> address = dat -> byte ; bit_reset_chain ( dat ) ; if ( obj -> size > dat -> size ) { LOG_ERROR ( \"\\\\nInvalid<S2SV_blank>object<S2SV_blank>size.<S2SV_blank>Would<S2SV_blank>overflow\" ) ; * dat = abs_dat ; return DWG_ERR_VALUEOUTOFBOUNDS ; } dat -> size = obj -> size ; SINCE ( R_2010 ) { obj -> type = bit_read_BOT ( dat ) ; } else { obj -> type = bit_read_BS ( dat ) ; } LOG_INFO ( \",<S2SV_blank>Type:<S2SV_blank>%d<S2SV_blank>[%s]\\\\n\" , obj -> type , dat -> version >= R_2010 ? \"BOT\" : \"BS\" ) ; restartpos = bit_position ( dat ) ; switch ( obj -> type ) { case DWG_TYPE_TEXT : error = dwg_decode_TEXT ( dat , obj ) ; break ; case DWG_TYPE_ATTRIB : error = dwg_decode_ATTRIB ( dat , obj ) ; break ; case DWG_TYPE_ATTDEF : error = dwg_decode_ATTDEF ( dat , obj ) ; break ; case DWG_TYPE_BLOCK : error = dwg_decode_BLOCK ( dat , obj ) ; break ; case DWG_TYPE_ENDBLK : error = dwg_decode_ENDBLK ( dat , obj ) ; break ; case DWG_TYPE_SEQEND : error = dwg_decode_SEQEND ( dat , obj ) ; if ( dat -> version >= R_13 && obj -> tio . entity -> ownerhandle ) { Dwg_Object * restrict owner = dwg_resolve_handle ( dwg , obj -> tio . entity -> ownerhandle -> absolute_ref ) ; if ( ! owner ) { LOG_WARN ( \"no<S2SV_blank>SEQEND.ownerhandle\" ) } else if ( owner -> fixedtype == DWG_TYPE_INSERT || owner -> fixedtype == DWG_TYPE_MINSERT ) { hash_set ( dwg -> object_map , obj -> handle . value , ( uint32_t ) num ) ; ( void ) dwg_validate_INSERT ( owner ) ; } else if ( owner -> fixedtype == DWG_TYPE_POLYLINE_2D || owner -> fixedtype == DWG_TYPE_POLYLINE_3D || owner -> fixedtype == DWG_TYPE_POLYLINE_PFACE || owner -> fixedtype == DWG_TYPE_POLYLINE_MESH ) { Dwg_Entity_POLYLINE_2D * restrict _obj = owner -> tio . entity -> tio . POLYLINE_2D ; if ( ! _obj -> seqend ) hash_set ( dwg -> object_map , obj -> handle . value , ( uint32_t ) num ) ; ( void ) dwg_validate_POLYLINE ( owner ) ; } } break ; case DWG_TYPE_INSERT : error = dwg_decode_INSERT ( dat , obj ) ; break ; case DWG_TYPE_MINSERT : error = dwg_decode_MINSERT ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_2D : error = dwg_decode_VERTEX_2D ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_3D : error = dwg_decode_VERTEX_3D ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_MESH : error = dwg_decode_VERTEX_MESH ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_PFACE : error = dwg_decode_VERTEX_PFACE ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_PFACE_FACE : error = dwg_decode_VERTEX_PFACE_FACE ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_2D : error = dwg_decode_POLYLINE_2D ( dat , obj ) ; if ( dat -> version >= R_2010 ) check_POLYLINE_handles ( obj ) ; break ; case DWG_TYPE_POLYLINE_3D : error = dwg_decode_POLYLINE_3D ( dat , obj ) ; if ( dat -> version >= R_2010 ) check_POLYLINE_handles ( obj ) ; break ; case DWG_TYPE_ARC : error = dwg_decode_ARC ( dat , obj ) ; break ; case DWG_TYPE_CIRCLE : error = dwg_decode_CIRCLE ( dat , obj ) ; break ; case DWG_TYPE_LINE : error = dwg_decode_LINE ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ORDINATE : error = dwg_decode_DIMENSION_ORDINATE ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_LINEAR : error = dwg_decode_DIMENSION_LINEAR ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ALIGNED : error = dwg_decode_DIMENSION_ALIGNED ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ANG3PT : error = dwg_decode_DIMENSION_ANG3PT ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ANG2LN : error = dwg_decode_DIMENSION_ANG2LN ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_RADIUS : error = dwg_decode_DIMENSION_RADIUS ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_DIAMETER : error = dwg_decode_DIMENSION_DIAMETER ( dat , obj ) ; break ; case DWG_TYPE_POINT : error = dwg_decode_POINT ( dat , obj ) ; break ; case DWG_TYPE__3DFACE : error = dwg_decode__3DFACE ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_PFACE : error = dwg_decode_POLYLINE_PFACE ( dat , obj ) ; if ( dat -> version >= R_2010 ) check_POLYLINE_handles ( obj ) ; break ; case DWG_TYPE_POLYLINE_MESH : error = dwg_decode_POLYLINE_MESH ( dat , obj ) ; if ( dat -> version >= R_2010 ) check_POLYLINE_handles ( obj ) ; break ; case DWG_TYPE_SOLID : error = dwg_decode_SOLID ( dat , obj ) ; break ; case DWG_TYPE_TRACE : error = dwg_decode_TRACE ( dat , obj ) ; break ; case DWG_TYPE_SHAPE : error = dwg_decode_SHAPE ( dat , obj ) ; break ; case DWG_TYPE_VIEWPORT : error = dwg_decode_VIEWPORT ( dat , obj ) ; break ; case DWG_TYPE_ELLIPSE : error = dwg_decode_ELLIPSE ( dat , obj ) ; break ; case DWG_TYPE_SPLINE : error = dwg_decode_SPLINE ( dat , obj ) ; break ; case DWG_TYPE_REGION : error = dwg_decode_REGION ( dat , obj ) ; break ; case DWG_TYPE__3DSOLID : error = dwg_decode__3DSOLID ( dat , obj ) ; break ; case DWG_TYPE_BODY : error = dwg_decode_BODY ( dat , obj ) ; break ; case DWG_TYPE_RAY : error = dwg_decode_RAY ( dat , obj ) ; break ; case DWG_TYPE_XLINE : error = dwg_decode_XLINE ( dat , obj ) ; break ; case DWG_TYPE_DICTIONARY : error = dwg_decode_DICTIONARY ( dat , obj ) ; break ; case DWG_TYPE_MTEXT : error = dwg_decode_MTEXT ( dat , obj ) ; break ; case DWG_TYPE_LEADER : error = dwg_decode_LEADER ( dat , obj ) ; break ; case DWG_TYPE_TOLERANCE : error = dwg_decode_TOLERANCE ( dat , obj ) ; break ; case DWG_TYPE_MLINE : error = dwg_decode_MLINE ( dat , obj ) ; break ; case DWG_TYPE_BLOCK_CONTROL : error = dwg_decode_BLOCK_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . BLOCK_CONTROL ) { obj -> tio . object -> tio . BLOCK_CONTROL -> objid = num ; if ( ! dwg -> block_control . parent ) dwg -> block_control = * obj -> tio . object -> tio . BLOCK_CONTROL ; else LOG_WARN ( \"Second<S2SV_blank>BLOCK_CONTROL<S2SV_blank>object<S2SV_blank>ignored\" ) ; } break ; case DWG_TYPE_BLOCK_HEADER : error = dwg_decode_BLOCK_HEADER ( dat , obj ) ; break ; case DWG_TYPE_LAYER_CONTROL : error = dwg_decode_LAYER_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . LAYER_CONTROL ) { obj -> tio . object -> tio . LAYER_CONTROL -> objid = num ; dwg -> layer_control = * obj -> tio . object -> tio . LAYER_CONTROL ; } break ; case DWG_TYPE_LAYER : error = dwg_decode_LAYER ( dat , obj ) ; break ; case DWG_TYPE_STYLE_CONTROL : error = dwg_decode_STYLE_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . STYLE_CONTROL ) { obj -> tio . object -> tio . STYLE_CONTROL -> objid = num ; dwg -> style_control = * obj -> tio . object -> tio . STYLE_CONTROL ; } break ; case DWG_TYPE_STYLE : error = dwg_decode_STYLE ( dat , obj ) ; break ; case DWG_TYPE_LTYPE_CONTROL : error = dwg_decode_LTYPE_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . LTYPE_CONTROL ) { obj -> tio . object -> tio . LTYPE_CONTROL -> objid = num ; dwg -> ltype_control = * obj -> tio . object -> tio . LTYPE_CONTROL ; } break ; case DWG_TYPE_LTYPE : error = dwg_decode_LTYPE ( dat , obj ) ; break ; case DWG_TYPE_VIEW_CONTROL : error = dwg_decode_VIEW_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . VIEW_CONTROL ) { obj -> tio . object -> tio . VIEW_CONTROL -> objid = num ; dwg -> view_control = * obj -> tio . object -> tio . VIEW_CONTROL ; } break ; case DWG_TYPE_VIEW : error = dwg_decode_VIEW ( dat , obj ) ; break ; case DWG_TYPE_UCS_CONTROL : error = dwg_decode_UCS_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . UCS_CONTROL ) { obj -> tio . object -> tio . UCS_CONTROL -> objid = num ; dwg -> ucs_control = * obj -> tio . object -> tio . UCS_CONTROL ; } break ; case DWG_TYPE_UCS : error = dwg_decode_UCS ( dat , obj ) ; break ; case DWG_TYPE_VPORT_CONTROL : error = dwg_decode_VPORT_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . VPORT_CONTROL ) { obj -> tio . object -> tio . VPORT_CONTROL -> objid = num ; dwg -> vport_control = * obj -> tio . object -> tio . VPORT_CONTROL ; } break ; case DWG_TYPE_VPORT : error = dwg_decode_VPORT ( dat , obj ) ; break ; case DWG_TYPE_APPID_CONTROL : error = dwg_decode_APPID_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . APPID_CONTROL ) { obj -> tio . object -> tio . APPID_CONTROL -> objid = num ; dwg -> appid_control = * obj -> tio . object -> tio . APPID_CONTROL ; } break ; case DWG_TYPE_APPID : error = dwg_decode_APPID ( dat , obj ) ; break ; case DWG_TYPE_DIMSTYLE_CONTROL : error = dwg_decode_DIMSTYLE_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . DIMSTYLE_CONTROL ) { obj -> tio . object -> tio . DIMSTYLE_CONTROL -> objid = num ; dwg -> dimstyle_control = * obj -> tio . object -> tio . DIMSTYLE_CONTROL ; } break ; case DWG_TYPE_DIMSTYLE : error = dwg_decode_DIMSTYLE ( dat , obj ) ; break ; case DWG_TYPE_VPORT_ENTITY_CONTROL : error = dwg_decode_VPORT_ENTITY_CONTROL ( dat , obj ) ; if ( ! error && obj -> tio . object -> tio . VPORT_ENTITY_CONTROL ) { obj -> tio . object -> tio . VPORT_ENTITY_CONTROL -> objid = num ; dwg -> vport_entity_control = * obj -> tio . object -> tio . VPORT_ENTITY_CONTROL ; } break ; case DWG_TYPE_VPORT_ENTITY_HEADER : error = dwg_decode_VPORT_ENTITY_HEADER ( dat , obj ) ; break ; case DWG_TYPE_GROUP : error = dwg_decode_GROUP ( dat , obj ) ; break ; case DWG_TYPE_MLINESTYLE : error = dwg_decode_MLINESTYLE ( dat , obj ) ; break ; case DWG_TYPE_OLE2FRAME : error = dwg_decode_OLE2FRAME ( dat , obj ) ; break ; case DWG_TYPE_DUMMY : error = dwg_decode_DUMMY ( dat , obj ) ; break ; case DWG_TYPE_LONG_TRANSACTION : error = dwg_decode_LONG_TRANSACTION ( dat , obj ) ; break ; case DWG_TYPE_LWPOLYLINE : error = dwg_decode_LWPOLYLINE ( dat , obj ) ; break ; case DWG_TYPE_HATCH : error = dwg_decode_HATCH ( dat , obj ) ; break ; case DWG_TYPE_XRECORD : error = dwg_decode_XRECORD ( dat , obj ) ; break ; case DWG_TYPE_PLACEHOLDER : error = dwg_decode_PLACEHOLDER ( dat , obj ) ; break ; case DWG_TYPE_OLEFRAME : error = dwg_decode_OLEFRAME ( dat , obj ) ; break ; case DWG_TYPE_VBA_PROJECT : LOG_ERROR ( \"Unhandled<S2SV_blank>Object<S2SV_blank>VBA_PROJECT.<S2SV_blank>Has<S2SV_blank>its<S2SV_blank>own<S2SV_blank>section\" ) ; error = DWG_ERR_UNHANDLEDCLASS ; break ; case DWG_TYPE_LAYOUT : error = dwg_decode_LAYOUT ( dat , obj ) ; break ; case DWG_TYPE_PROXY_ENTITY : error = dwg_decode_PROXY_ENTITY ( dat , obj ) ; break ; case DWG_TYPE_PROXY_OBJECT : error = dwg_decode_PROXY_OBJECT ( dat , obj ) ; break ; default : if ( obj -> type == dwg -> layout_type ) error = dwg_decode_LAYOUT ( dat , obj ) ; else if ( ( error = dwg_decode_variable_type ( dwg , dat , hdl_dat , obj ) ) & DWG_ERR_UNHANDLEDCLASS ) { int is_entity = 0 ; int i = obj -> type - 500 ; Dwg_Class * klass = NULL ; <S2SV_StartBug> bit_set_position ( dat , restartpos ) ; <S2SV_EndBug> if ( i >= 0 && i < ( int ) dwg -> num_classes ) { klass = & dwg -> dwg_class [ i ] ; is_entity = dwg_class_is_entity ( klass ) ; } else { if ( i < 0 ) { LOG_ERROR ( \"Invalid<S2SV_blank>class<S2SV_blank>index<S2SV_blank>%d<S2SV_blank><0\" , i ) ; } else { LOG_ERROR ( \"Invalid<S2SV_blank>class<S2SV_blank>index<S2SV_blank>%d<S2SV_blank>>%d\" , i , ( int ) dwg -> num_classes ) ; } <S2SV_StartBug> obj -> supertype = DWG_SUPERTYPE_UNKNOWN ; <S2SV_EndBug> obj -> type = 0 ; * dat = abs_dat ; return error | DWG_ERR_VALUEOUTOFBOUNDS ; } <S2SV_StartBug> if ( klass && ! is_entity ) <S2SV_EndBug> { int err = dwg_decode_UNKNOWN_OBJ ( dat , obj ) ; error |= err ; obj -> supertype = DWG_SUPERTYPE_UNKNOWN ; if ( ! dat ) return error ; <S2SV_StartBug> if ( err >= DWG_ERR_CRITICAL ) <S2SV_EndBug> * dat = abs_dat ; <S2SV_StartBug> } <S2SV_EndBug> else if ( klass ) { int err ; # if 0 && ! defined ( IS_RELEASE ) if ( strEQc ( klass -> dxfname , \"MULTILEADER\" ) ) { char * mleader = bit_read_TF ( dat , obj -> size ) ; LOG_INSANE_TF ( mleader , ( int ) obj -> size ) bit_set_position ( dat , restartpos ) ; free ( mleader ) ; } # endif err = dwg_decode_UNKNOWN_ENT ( dat , obj ) ; error |= err ; obj -> supertype = DWG_SUPERTYPE_UNKNOWN ; if ( ! dat ) return error ; if ( err >= DWG_ERR_CRITICAL ) * dat = abs_dat ; } else { LOG_WARN ( \"Unknown<S2SV_blank>object,<S2SV_blank>skipping<S2SV_blank>eed/reactors/xdic\" ) ; SINCE ( R_2000 ) { obj -> bitsize = bit_read_RL ( dat ) ; LOG_TRACE ( \"bitsize:<S2SV_blank>\" FORMAT_RL \"<S2SV_blank>[RL]<S2SV_blank>@%lu.%u\\\\n\" , obj -> bitsize , dat -> byte - 2 , dat -> bit ) ; if ( obj -> bitsize > obj -> size * 8 ) { LOG_ERROR ( \"Invalid<S2SV_blank>bitsize<S2SV_blank>\" FORMAT_RL \"<S2SV_blank>=><S2SV_blank>\" FORMAT_RL , obj -> bitsize , obj -> size * 8 ) ; obj -> bitsize = obj -> size * 8 ; error |= DWG_ERR_VALUEOUTOFBOUNDS ; } } if ( ! bit_read_H ( dat , & obj -> handle ) ) { LOG_TRACE ( \"handle:<S2SV_blank>\" FORMAT_H \"<S2SV_blank>[H<S2SV_blank>5]\\\\n\" , ARGS_H ( obj -> handle ) ) ; } restartpos = dat -> byte ; obj -> supertype = DWG_SUPERTYPE_UNKNOWN ; obj -> tio . unknown = bit_read_TF ( dat , obj -> size ) ; dat -> byte = restartpos ; } } } if ( obj -> handle . value ) { LOG_HANDLE ( \"<S2SV_blank>object_map{%lX}<S2SV_blank>=<S2SV_blank>%lu\\\\n\" , obj -> handle . value , ( unsigned long ) num ) ; hash_set ( dwg -> object_map , obj -> handle . value , ( uint32_t ) num ) ; } if ( dat -> byte > 8 * dat -> size ) { LOG_ERROR ( \"Invalid<S2SV_blank>object<S2SV_blank>address<S2SV_blank>(overflow):<S2SV_blank>%lu<S2SV_blank>><S2SV_blank>%lu\" , dat -> byte , 8 * dat -> size ) ; * dat = abs_dat ; return error | DWG_ERR_INVALIDDWG ; } restartpos = bit_position ( dat ) ; * dat = abs_dat ; bit_set_position ( dat , objpos + restartpos ) ; if ( dat -> bit ) { unsigned char r = 8 - dat -> bit ; LOG_HANDLE ( \"<S2SV_blank>padding:<S2SV_blank>%X/%X<S2SV_blank>(%d<S2SV_blank>bits)\\\\n\" , dat -> chain [ dat -> byte ] , dat -> chain [ dat -> byte ] & ( ( 1 << r ) - 1 ) , r ) ; bit_advance_position ( dat , r ) ; } bit_set_position ( dat , ( obj -> address + obj -> size ) * 8 - 2 ) ; if ( ! bit_check_CRC ( dat , address , 0xC0C1 ) ) error |= DWG_ERR_WRONGCRC ; * dat = abs_dat ; return realloced ? - 1 : error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , restartpos ) ; obj -> supertype = DWG_SUPERTYPE_UNKNOWN <S2SV_ModStart> } obj -> <S2SV_ModEnd> type = 0 <S2SV_ModStart> } if ( is_entity ) error |= dwg_decode_UNKNOWN_ENT ( dat , obj ) ; else error |= dwg_decode_UNKNOWN_OBJ ( dat , obj ) ; if ( ! <S2SV_ModEnd> dat ) return <S2SV_ModStart> ; if ( error <S2SV_ModEnd> >= DWG_ERR_CRITICAL ) <S2SV_ModStart> = abs_dat ; <S2SV_ModEnd> } } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline unsigned short ReadPropertyUnsignedShort ( const EndianType endian , const unsigned char * buffer ) { unsigned short value ; if ( endian == LSBEndian ) { <S2SV_StartBug> value = ( unsigned short ) ( ( buffer [ 1 ] << 8 ) | buffer [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> return ( ( unsigned short ) ( value & 0xffff ) ) ; <S2SV_EndBug> } <S2SV_StartBug> value = ( unsigned short ) ( ( ( ( unsigned char * ) buffer ) [ 0 ] << 8 ) | <S2SV_EndBug> ( ( unsigned char * ) buffer ) [ 1 ] ) ; <S2SV_StartBug> return ( ( unsigned short ) ( value & 0xffff ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned short ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 8 ; value |= ( unsigned short ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; return ( <S2SV_ModStart> ; return ( <S2SV_ModEnd> value & 0xffff <S2SV_ModStart> value & 0xffff <S2SV_ModEnd> ) ; } <S2SV_ModStart> unsigned short ) buffer <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> ] << 8 ; value |= <S2SV_ModEnd> ( unsigned short <S2SV_ModStart> unsigned short ) buffer [ 1 ] ; return <S2SV_ModStart> & 0xffff ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int jas_iccgetuint16 ( jas_stream_t * in , jas_iccuint16_t * val ) { <S2SV_StartBug> ulonglong tmp ; <S2SV_EndBug> if ( jas_iccgetuint ( in , 2 , & tmp ) ) return - 1 ; * val = tmp ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { jas_ulonglong <S2SV_ModEnd> tmp ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6430\n\n```\nCWE-125 int main ( int argc , char * argv [ ] ) { <S2SV_StartBug> libettercap_init ( ) ; <S2SV_EndBug> ef_globals_alloc ( ) ; select_text_interface ( ) ; libettercap_ui_init ( ) ; fprintf ( stdout , \"\\\\n\" EC_COLOR_BOLD \"%s<S2SV_blank>%s\" EC_COLOR_END \"<S2SV_blank>copyright<S2SV_blank>%s<S2SV_blank>%s\\\\n\\\\n\" , PROGRAM , EC_VERSION , EC_COPYRIGHT , EC_AUTHORS ) ; EF_GBL -> lineno = 1 ; parse_options ( argc , argv ) ; if ( EF_GBL_OPTIONS -> source_file ) { yyin = fopen ( EF_GBL_OPTIONS -> source_file , \"r\" ) ; if ( yyin == NULL ) FATAL_ERROR ( \"Input<S2SV_blank>file<S2SV_blank>not<S2SV_blank>found<S2SV_blank>!\" ) ; } else { FATAL_ERROR ( \"No<S2SV_blank>source<S2SV_blank>file.\" ) ; } setbuf ( yyin , NULL ) ; setbuf ( stdout , NULL ) ; setbuf ( stderr , NULL ) ; load_tables ( ) ; load_constants ( ) ; fprintf ( stdout , \"\\\\n<S2SV_blank>Parsing<S2SV_blank>source<S2SV_blank>file<S2SV_blank>\\\\\\'%s\\\\\\'<S2SV_blank>\" , EF_GBL_OPTIONS -> source_file ) ; fflush ( stdout ) ; ef_debug ( 1 , \"\\\\n\" ) ; if ( yyparse ( ) == 0 ) fprintf ( stdout , \"<S2SV_blank>done.\\\\n\\\\n\" ) ; else fprintf ( stdout , \"\\\\n\\\\nThe<S2SV_blank>script<S2SV_blank>contains<S2SV_blank>errors...\\\\n\\\\n\" ) ; <S2SV_StartBug> if ( write_output ( ) != E_SUCCESS ) <S2SV_EndBug> FATAL_ERROR ( \"Cannot<S2SV_blank>write<S2SV_blank>output<S2SV_blank>file<S2SV_blank>(%s)\" , EF_GBL_OPTIONS -> output_file ) ; ef_globals_free ( ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) { int ret_value = 0 ; <S2SV_ModStart> \"\\\\n\\\\nThe<S2SV_blank>script<S2SV_blank>contains<S2SV_blank>errors...\\\\n\\\\n\" ) ; ret_value = <S2SV_ModEnd> write_output ( ) <S2SV_ModStart> write_output ( ) ; if ( ret_value == - E_NOTHANDLED ) FATAL_ERROR ( \"Cannot<S2SV_blank>write<S2SV_blank>output<S2SV_blank>file<S2SV_blank>(%s):<S2SV_blank>the<S2SV_blank>filter<S2SV_blank>is<S2SV_blank>not<S2SV_blank>correctly<S2SV_blank>handled.\" , EF_GBL_OPTIONS -> output_file ) ; else if ( ret_value == - E_INVALID ) FATAL_ERROR ( \"Cannot<S2SV_blank>write<S2SV_blank>output<S2SV_blank>file<S2SV_blank>(%s):<S2SV_blank>the<S2SV_blank>filter<S2SV_blank>format<S2SV_blank>is<S2SV_blank>not<S2SV_blank>correct.<S2SV_blank>\" <S2SV_ModEnd> , EF_GBL_OPTIONS ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6703\n\n```\nCWE-000 static int snd_compr_allocate_buffer ( struct snd_compr_stream * stream , struct snd_compr_params * params ) { unsigned int buffer_size ; <S2SV_StartBug> void * buffer ; <S2SV_EndBug> buffer_size = params -> buffer . fragment_size * params -> buffer . fragments ; if ( stream -> ops -> copy ) { buffer = NULL ; } else { buffer = kmalloc ( buffer_size , GFP_KERNEL ) ; if ( ! buffer ) return - ENOMEM ; } stream -> runtime -> fragment_size = params -> buffer . fragment_size ; stream -> runtime -> fragments = params -> buffer . fragments ; stream -> runtime -> buffer = buffer ; stream -> runtime -> buffer_size = buffer_size ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void * buffer ; if ( params -> buffer . fragment_size == 0 || params -> buffer . fragments > SIZE_MAX / params -> buffer . fragment_size ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-667(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-667 void uverbs_user_mmap_disassociate ( struct ib_uverbs_file * ufile ) { struct rdma_umap_priv * priv , * next_priv ; lockdep_assert_held ( & ufile -> hw_destroy_rwsem ) ; while ( 1 ) { struct mm_struct * mm = NULL ; mutex_lock ( & ufile -> umap_lock ) ; while ( ! list_empty ( & ufile -> umaps ) ) { int ret ; priv = list_first_entry ( & ufile -> umaps , struct rdma_umap_priv , list ) ; mm = priv -> vma -> vm_mm ; ret = mmget_not_zero ( mm ) ; if ( ! ret ) { list_del_init ( & priv -> list ) ; mm = NULL ; continue ; } break ; } mutex_unlock ( & ufile -> umap_lock ) ; if ( ! mm ) return ; <S2SV_StartBug> down_write ( & mm -> mmap_sem ) ; <S2SV_EndBug> mutex_lock ( & ufile -> umap_lock ) ; list_for_each_entry_safe ( priv , next_priv , & ufile -> umaps , list ) { struct vm_area_struct * vma = priv -> vma ; if ( vma -> vm_mm != mm ) continue ; list_del_init ( & priv -> list ) ; zap_vma_ptes ( vma , vma -> vm_start , vma -> vm_end - vma -> vm_start ) ; vma -> vm_flags &= ~ ( VM_SHARED | VM_MAYSHARE ) ; } mutex_unlock ( & ufile -> umap_lock ) ; <S2SV_StartBug> up_write ( & mm -> mmap_sem ) ; <S2SV_EndBug> mmput ( mm ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mmap_sem ) ; if ( ! mmget_still_valid ( mm ) ) goto skip_mm <S2SV_ModStart> umap_lock ) ; skip_mm :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2390\n\n```\nCWE-399 static void hugetlb_vm_op_close ( struct vm_area_struct * vma ) { struct hstate * h = hstate_vma ( vma ) ; struct resv_map * reservations = vma_resv_map ( vma ) ; struct hugepage_subpool * spool = subpool_vma ( vma ) ; unsigned long reserve ; unsigned long start ; unsigned long end ; if ( reservations ) { start = vma_hugecache_offset ( h , vma , vma -> vm_start ) ; end = vma_hugecache_offset ( h , vma , vma -> vm_end ) ; reserve = ( end - start ) - region_count ( & reservations -> regions , start , end ) ; <S2SV_StartBug> kref_put ( & reservations -> refs , resv_map_release ) ; <S2SV_EndBug> if ( reserve ) { hugetlb_acct_memory ( h , - reserve ) ; hugepage_subpool_put_pages ( spool , reserve ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> end ) ; resv_map_put ( vma <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int dccp_v4_connect ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { const struct sockaddr_in * usin = ( struct sockaddr_in * ) uaddr ; struct inet_sock * inet = inet_sk ( sk ) ; struct dccp_sock * dp = dccp_sk ( sk ) ; __be16 orig_sport , orig_dport ; __be32 daddr , nexthop ; struct flowi4 fl4 ; struct rtable * rt ; <S2SV_StartBug> int err ; <S2SV_EndBug> dp -> dccps_role = DCCP_ROLE_CLIENT ; if ( addr_len < sizeof ( struct sockaddr_in ) ) return - EINVAL ; if ( usin -> sin_family != AF_INET ) return - EAFNOSUPPORT ; nexthop = daddr = usin -> sin_addr . s_addr ; <S2SV_StartBug> if ( inet -> opt != NULL && inet -> opt -> srr ) { <S2SV_EndBug> if ( daddr == 0 ) return - EINVAL ; <S2SV_StartBug> nexthop = inet -> opt -> faddr ; <S2SV_EndBug> } orig_sport = inet -> inet_sport ; orig_dport = usin -> sin_port ; rt = ip_route_connect ( & fl4 , nexthop , inet -> inet_saddr , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if , IPPROTO_DCCP , orig_sport , orig_dport , sk , true ) ; if ( IS_ERR ( rt ) ) return PTR_ERR ( rt ) ; if ( rt -> rt_flags & ( RTCF_MULTICAST | RTCF_BROADCAST ) ) { ip_rt_put ( rt ) ; return - ENETUNREACH ; } <S2SV_StartBug> if ( inet -> opt == NULL || ! inet -> opt -> srr ) <S2SV_EndBug> daddr = rt -> rt_dst ; if ( inet -> inet_saddr == 0 ) inet -> inet_saddr = rt -> rt_src ; inet -> inet_rcv_saddr = inet -> inet_saddr ; inet -> inet_dport = usin -> sin_port ; inet -> inet_daddr = daddr ; inet_csk ( sk ) -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( inet -> opt != NULL ) <S2SV_EndBug> inet_csk ( sk ) -> icsk_ext_hdr_len = inet -> opt -> optlen ; dccp_set_state ( sk , DCCP_REQUESTING ) ; err = inet_hash_connect ( & dccp_death_row , sk ) ; if ( err != 0 ) goto failure ; rt = ip_route_newports ( & fl4 , rt , orig_sport , orig_dport , inet -> inet_sport , inet -> inet_dport , sk ) ; if ( IS_ERR ( rt ) ) { rt = NULL ; goto failure ; } sk_setup_caps ( sk , & rt -> dst ) ; dp -> dccps_iss = secure_dccp_sequence_number ( inet -> inet_saddr , inet -> inet_daddr , inet -> inet_sport , inet -> inet_dport ) ; inet -> inet_id = dp -> dccps_iss ^ jiffies ; err = dccp_connect ( sk ) ; rt = NULL ; if ( err != 0 ) goto failure ; out : return err ; failure : dccp_set_state ( sk , DCCP_CLOSED ) ; ip_rt_put ( rt ) ; sk -> sk_route_caps = 0 ; inet -> inet_dport = 0 ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int err ; struct ip_options_rcu * inet_opt <S2SV_ModStart> . s_addr ; inet_opt = rcu_dereference_protected ( inet -> inet_opt , sock_owned_by_user ( sk ) ) ; if ( inet_opt <S2SV_ModEnd> != NULL && <S2SV_ModStart> != NULL && inet_opt -> opt . <S2SV_ModEnd> srr ) { <S2SV_ModStart> ; nexthop = inet_opt -> opt . <S2SV_ModEnd> faddr ; } <S2SV_ModStart> } if ( inet_opt <S2SV_ModEnd> == NULL || <S2SV_ModStart> NULL || ! inet_opt -> opt . <S2SV_ModEnd> srr ) daddr <S2SV_ModStart> ; if ( inet_opt ) inet_csk ( sk ) -> icsk_ext_hdr_len = inet_opt -> opt . <S2SV_ModEnd> optlen ; dccp_set_state\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13205\n\n```\nCWE-200 IMPEG2D_ERROR_CODES_T impeg2d_dec_pic_hdr ( dec_state_t * ps_dec ) { stream_t * ps_stream ; ps_stream = & ps_dec -> s_bit_stream ; impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; impeg2d_bit_stream_get ( ps_stream , 10 ) ; ps_dec -> e_pic_type = ( e_pic_type_t ) impeg2d_bit_stream_get ( ps_stream , 3 ) ; if ( ( ps_dec -> e_pic_type < I_PIC ) || ( ps_dec -> e_pic_type > D_PIC ) ) { impeg2d_next_code ( ps_dec , PICTURE_START_CODE ) ; return IMPEG2D_INVALID_PIC_TYPE ; } impeg2d_bit_stream_get ( ps_stream , 16 ) ; if ( ps_dec -> e_pic_type == P_PIC || ps_dec -> e_pic_type == B_PIC ) { ps_dec -> u2_full_pel_forw_vector = impeg2d_bit_stream_get_bit ( ps_stream ) ; ps_dec -> u2_forw_f_code = impeg2d_bit_stream_get ( ps_stream , 3 ) ; } if ( ps_dec -> e_pic_type == B_PIC ) { ps_dec -> u2_full_pel_back_vector = impeg2d_bit_stream_get_bit ( ps_stream ) ; ps_dec -> u2_back_f_code = impeg2d_bit_stream_get ( ps_stream , 3 ) ; } if ( ps_dec -> u2_is_mpeg2 == 0 ) { <S2SV_StartBug> ps_dec -> au2_f_code [ 0 ] [ 0 ] = ps_dec -> au2_f_code [ 0 ] [ 1 ] = ps_dec -> u2_forw_f_code ; <S2SV_EndBug> ps_dec -> au2_f_code [ 1 ] [ 0 ] = ps_dec -> au2_f_code [ 1 ] [ 1 ] = ps_dec -> u2_back_f_code ; } while ( impeg2d_bit_stream_nxt ( ps_stream , 1 ) == 1 && ps_stream -> u4_offset < ps_stream -> u4_max_offset ) { impeg2d_bit_stream_get ( ps_stream , 9 ) ; } impeg2d_bit_stream_get_bit ( ps_stream ) ; impeg2d_next_start_code ( ps_dec ) ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( ps_dec -> u2_forw_f_code < 1 || ps_dec -> u2_forw_f_code > 7 || ps_dec -> u2_back_f_code < 1 || ps_dec -> u2_back_f_code > 7 ) { return IMPEG2D_UNKNOWN_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1790\n\n```\nCWE-000 BIO * PKCS7_dataDecode ( PKCS7 * p7 , EVP_PKEY * pkey , BIO * in_bio , X509 * pcert ) { int i , j ; BIO * out = NULL , * btmp = NULL , * etmp = NULL , * bio = NULL ; X509_ALGOR * xa ; ASN1_OCTET_STRING * data_body = NULL ; const EVP_MD * evp_md ; const EVP_CIPHER * evp_cipher = NULL ; EVP_CIPHER_CTX * evp_ctx = NULL ; X509_ALGOR * enc_alg = NULL ; STACK_OF ( X509_ALGOR ) * md_sk = NULL ; STACK_OF ( PKCS7_RECIP_INFO ) * rsk = NULL ; PKCS7_RECIP_INFO * ri = NULL ; unsigned char * ek = NULL , * tkey = NULL ; int eklen = 0 , tkeylen = 0 ; if ( p7 == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_INVALID_NULL_POINTER ) ; return NULL ; } if ( p7 -> d . ptr == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_NO_CONTENT ) ; return NULL ; } i = OBJ_obj2nid ( p7 -> type ) ; p7 -> state = PKCS7_S_HEADER ; switch ( i ) { case NID_pkcs7_signed : data_body = PKCS7_get_octet_string ( p7 -> d . sign -> contents ) ; if ( ! PKCS7_is_detached ( p7 ) && data_body == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_INVALID_SIGNED_DATA_TYPE ) ; goto err ; } md_sk = p7 -> d . sign -> md_algs ; break ; case NID_pkcs7_signedAndEnveloped : rsk = p7 -> d . signed_and_enveloped -> recipientinfo ; md_sk = p7 -> d . signed_and_enveloped -> md_algs ; data_body = p7 -> d . signed_and_enveloped -> enc_data -> enc_data ; enc_alg = p7 -> d . signed_and_enveloped -> enc_data -> algorithm ; evp_cipher = EVP_get_cipherbyobj ( enc_alg -> algorithm ) ; if ( evp_cipher == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_UNSUPPORTED_CIPHER_TYPE ) ; goto err ; } break ; case NID_pkcs7_enveloped : rsk = p7 -> d . enveloped -> recipientinfo ; enc_alg = p7 -> d . enveloped -> enc_data -> algorithm ; data_body = p7 -> d . enveloped -> enc_data -> enc_data ; evp_cipher = EVP_get_cipherbyobj ( enc_alg -> algorithm ) ; if ( evp_cipher == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_UNSUPPORTED_CIPHER_TYPE ) ; goto err ; } break ; default : PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_UNSUPPORTED_CONTENT_TYPE ) ; goto err ; } <S2SV_StartBug> if ( md_sk != NULL ) { <S2SV_EndBug> for ( i = 0 ; i < sk_X509_ALGOR_num ( md_sk ) ; i ++ ) { xa = sk_X509_ALGOR_value ( md_sk , i ) ; if ( ( btmp = BIO_new ( BIO_f_md ( ) ) ) == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , ERR_R_BIO_LIB ) ; goto err ; } j = OBJ_obj2nid ( xa -> algorithm ) ; evp_md = EVP_get_digestbynid ( j ) ; if ( evp_md == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_UNKNOWN_DIGEST_TYPE ) ; goto err ; } BIO_set_md ( btmp , evp_md ) ; if ( out == NULL ) out = btmp ; else BIO_push ( out , btmp ) ; btmp = NULL ; } } if ( evp_cipher != NULL ) { if ( ( etmp = BIO_new ( BIO_f_cipher ( ) ) ) == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , ERR_R_BIO_LIB ) ; goto err ; } if ( pcert ) { for ( i = 0 ; i < sk_PKCS7_RECIP_INFO_num ( rsk ) ; i ++ ) { ri = sk_PKCS7_RECIP_INFO_value ( rsk , i ) ; if ( ! pkcs7_cmp_ri ( ri , pcert ) ) break ; ri = NULL ; } if ( ri == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_NO_RECIPIENT_MATCHES_CERTIFICATE ) ; goto err ; } } if ( pcert == NULL ) { for ( i = 0 ; i < sk_PKCS7_RECIP_INFO_num ( rsk ) ; i ++ ) { ri = sk_PKCS7_RECIP_INFO_value ( rsk , i ) ; if ( pkcs7_decrypt_rinfo ( & ek , & eklen , ri , pkey ) < 0 ) goto err ; ERR_clear_error ( ) ; } } else { if ( pkcs7_decrypt_rinfo ( & ek , & eklen , ri , pkey ) < 0 ) goto err ; ERR_clear_error ( ) ; } evp_ctx = NULL ; BIO_get_cipher_ctx ( etmp , & evp_ctx ) ; if ( EVP_CipherInit_ex ( evp_ctx , evp_cipher , NULL , NULL , NULL , 0 ) <= 0 ) goto err ; if ( EVP_CIPHER_asn1_to_param ( evp_ctx , enc_alg -> parameter ) < 0 ) goto err ; tkeylen = EVP_CIPHER_CTX_key_length ( evp_ctx ) ; tkey = OPENSSL_malloc ( tkeylen ) ; if ( ! tkey ) goto err ; if ( EVP_CIPHER_CTX_rand_key ( evp_ctx , tkey ) <= 0 ) goto err ; if ( ek == NULL ) { ek = tkey ; eklen = tkeylen ; tkey = NULL ; } if ( eklen != EVP_CIPHER_CTX_key_length ( evp_ctx ) ) { if ( ! EVP_CIPHER_CTX_set_key_length ( evp_ctx , eklen ) ) { OPENSSL_clear_free ( ek , eklen ) ; ek = tkey ; eklen = tkeylen ; tkey = NULL ; } } ERR_clear_error ( ) ; if ( EVP_CipherInit_ex ( evp_ctx , NULL , NULL , ek , NULL , 0 ) <= 0 ) goto err ; OPENSSL_clear_free ( ek , eklen ) ; ek = NULL ; OPENSSL_clear_free ( tkey , tkeylen ) ; tkey = NULL ; if ( out == NULL ) out = etmp ; else BIO_push ( out , etmp ) ; etmp = NULL ; } <S2SV_StartBug> if ( PKCS7_is_detached ( p7 ) || ( in_bio != NULL ) ) { <S2SV_EndBug> bio = in_bio ; } else { if ( data_body -> length > 0 ) bio = BIO_new_mem_buf ( data_body -> data , data_body -> length ) ; else { bio = BIO_new ( BIO_s_mem ( ) ) ; BIO_set_mem_eof_return ( bio , 0 ) ; } if ( bio == NULL ) goto err ; } BIO_push ( out , bio ) ; bio = NULL ; return out ; err : OPENSSL_clear_free ( ek , eklen ) ; OPENSSL_clear_free ( tkey , tkeylen ) ; BIO_free_all ( out ) ; BIO_free_all ( btmp ) ; BIO_free_all ( etmp ) ; BIO_free_all ( bio ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( data_body == NULL && in_bio == NULL ) { PKCS7err ( PKCS7_F_PKCS7_DATADECODE , PKCS7_R_NO_CONTENT ) ; goto err ; } if ( <S2SV_ModStart> } if ( <S2SV_ModEnd> in_bio != NULL <S2SV_ModStart> != NULL ) <S2SV_ModEnd> { bio =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 static void * bpf_obj_do_get ( const struct filename * pathname , enum bpf_type * type ) { struct inode * inode ; struct path path ; void * raw ; int ret ; ret = kern_path ( pathname -> name , LOOKUP_FOLLOW , & path ) ; if ( ret ) return ERR_PTR ( ret ) ; inode = d_backing_inode ( path . dentry ) ; ret = inode_permission ( inode , MAY_WRITE ) ; if ( ret ) goto out ; ret = bpf_inode_type ( inode , type ) ; if ( ret ) goto out ; raw = bpf_any_get ( inode -> i_private , * type ) ; <S2SV_StartBug> touch_atime ( & path ) ; <S2SV_EndBug> path_put ( & path ) ; return raw ; out : path_put ( & path ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> type ) ; if ( ! IS_ERR ( raw ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7645\n\n```\nCWE-20 int nfsd_dispatch ( struct svc_rqst * rqstp , __be32 * statp ) { struct svc_procedure * proc ; kxdrproc_t xdr ; __be32 nfserr ; __be32 * nfserrp ; dprintk ( \"nfsd_dispatch:<S2SV_blank>vers<S2SV_blank>%d<S2SV_blank>proc<S2SV_blank>%d\\\\n\" , rqstp -> rq_vers , rqstp -> rq_proc ) ; <S2SV_StartBug> proc = rqstp -> rq_procinfo ; <S2SV_EndBug> rqstp -> rq_cachetype = proc -> pc_cachetype ; xdr = proc -> pc_decode ; if ( xdr && ! xdr ( rqstp , ( __be32 * ) rqstp -> rq_arg . head [ 0 ] . iov_base , rqstp -> rq_argp ) ) { dprintk ( \"nfsd:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>arguments!\\\\n\" ) ; * statp = rpc_garbage_args ; return 1 ; } switch ( nfsd_cache_lookup ( rqstp ) ) { case RC_DROPIT : return 0 ; case RC_REPLY : return 1 ; case RC_DOIT : ; } nfserrp = rqstp -> rq_res . head [ 0 ] . iov_base + rqstp -> rq_res . head [ 0 ] . iov_len ; rqstp -> rq_res . head [ 0 ] . iov_len += sizeof ( __be32 ) ; nfserr = proc -> pc_func ( rqstp , rqstp -> rq_argp , rqstp -> rq_resp ) ; nfserr = map_new_errors ( rqstp -> rq_vers , nfserr ) ; if ( nfserr == nfserr_dropit || test_bit ( RQ_DROPME , & rqstp -> rq_flags ) ) { dprintk ( \"nfsd:<S2SV_blank>Dropping<S2SV_blank>request;<S2SV_blank>may<S2SV_blank>be<S2SV_blank>revisited<S2SV_blank>later\\\\n\" ) ; nfsd_cache_update ( rqstp , RC_NOCACHE , NULL ) ; return 0 ; } if ( rqstp -> rq_proc != 0 ) * nfserrp ++ = nfserr ; if ( ! ( nfserr && rqstp -> rq_vers == 2 ) ) { xdr = proc -> pc_encode ; if ( xdr && ! xdr ( rqstp , nfserrp , rqstp -> rq_resp ) ) { dprintk ( \"nfsd:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>result!\\\\n\" ) ; nfsd_cache_update ( rqstp , RC_NOCACHE , NULL ) ; * statp = rpc_system_err ; return 1 ; } } nfsd_cache_update ( rqstp , rqstp -> rq_cachetype , statp + 1 ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rq_procinfo ; if ( nfs_request_too_big ( rqstp , proc ) ) { dprintk ( \"nfsd:<S2SV_blank>NFSv%d<S2SV_blank>argument<S2SV_blank>too<S2SV_blank>large\\\\n\" , rqstp -> rq_vers ) ; * statp = rpc_garbage_args ; return 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 int sas_discover_sata ( struct domain_device * dev ) { int res ; if ( dev -> dev_type == SAS_SATA_PM ) return - ENODEV ; dev -> sata_dev . class = sas_get_ata_command_set ( dev ) ; sas_fill_in_rphy ( dev , dev -> rphy ) ; res = sas_notify_lldd_dev_found ( dev ) ; if ( res ) return res ; <S2SV_StartBug> sas_discover_event ( dev -> port , DISCE_PROBE ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9141\n\n```\nCWE-20 static Image * ReadDDSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status , cubemap = MagickFalse , volume = MagickFalse , matte ; CompressionType compression ; DDSInfo dds_info ; DDSDecoder * decoder ; size_t n , num_images ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } <S2SV_StartBug> if ( ReadDDSInfo ( image , & dds_info ) != MagickTrue ) { <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP ) cubemap = MagickTrue ; if ( dds_info . ddscaps2 & DDSCAPS2_VOLUME && dds_info . depth > 0 ) volume = MagickTrue ; ( void ) SeekBlob ( image , 128 , SEEK_SET ) ; if ( dds_info . pixelformat . flags & DDPF_RGB ) { compression = NoCompression ; if ( dds_info . pixelformat . flags & DDPF_ALPHAPIXELS ) { matte = MagickTrue ; decoder = ReadUncompressedRGBA ; } else { matte = MagickTrue ; decoder = ReadUncompressedRGB ; } } else if ( dds_info . pixelformat . flags & DDPF_LUMINANCE ) { compression = NoCompression ; if ( dds_info . pixelformat . flags & DDPF_ALPHAPIXELS ) { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } else { matte = MagickFalse ; decoder = ReadUncompressedRGB ; } } else if ( dds_info . pixelformat . flags & DDPF_FOURCC ) { switch ( dds_info . pixelformat . fourcc ) { case FOURCC_DXT1 : { matte = MagickFalse ; compression = DXT1Compression ; decoder = ReadDXT1 ; break ; } case FOURCC_DXT3 : { matte = MagickTrue ; compression = DXT3Compression ; decoder = ReadDXT3 ; break ; } case FOURCC_DXT5 : { matte = MagickTrue ; compression = DXT5Compression ; decoder = ReadDXT5 ; break ; } default : { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } } } else { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } num_images = 1 ; if ( cubemap ) { num_images = 0 ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEX ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEX ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEY ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEY ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEZ ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEZ ) num_images ++ ; } if ( volume ) num_images = dds_info . depth ; <S2SV_StartBug> for ( n = 0 ; n < num_images ; n ++ ) <S2SV_EndBug> { if ( n != 0 ) { if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) return ( DestroyImageList ( image ) ) ; image = SyncNextImageInList ( image ) ; } image -> matte = matte ; image -> compression = compression ; image -> columns = dds_info . width ; image -> rows = dds_info . height ; image -> storage_class = DirectClass ; image -> endian = LSBEndian ; image -> depth = 8 ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( ( decoder ) ( image , & dds_info , exception ) != MagickTrue ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != MagickTrue ) <S2SV_ModEnd> ThrowReaderException ( CorruptImageError <S2SV_ModStart> \"ImproperImageHeader\" ) ; <S2SV_ModEnd> if ( dds_info <S2SV_ModStart> . depth ; if ( num_images < 1 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6432\n\n```\nCWE-000 int ping_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * isk = inet_sk ( sk ) ; int family = sk -> sk_family ; struct sk_buff * skb ; int copied , err ; pr_debug ( \"ping_recvmsg(sk=%p,sk->num=%u)\\\\n\" , isk , isk -> inet_num ) ; err = - EOPNOTSUPP ; if ( flags & MSG_OOB ) goto out ; if ( flags & MSG_ERRQUEUE ) { if ( family == AF_INET ) { return ip_recv_error ( sk , msg , len ) ; # if IS_ENABLED ( CONFIG_IPV6 ) } else if ( family == AF_INET6 ) { return pingv6_ops . ipv6_recv_error ( sk , msg , len ) ; # endif } } skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( copied > len ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_timestamp ( msg , sk , skb ) ; if ( family == AF_INET ) { struct sockaddr_in * sin = ( struct sockaddr_in * ) msg -> msg_name ; <S2SV_StartBug> sin -> sin_family = AF_INET ; <S2SV_EndBug> sin -> sin_port = 0 ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; * addr_len = sizeof ( * sin ) ; <S2SV_StartBug> if ( isk -> cmsg_flags ) <S2SV_EndBug> ip_cmsg_recv ( msg , skb ) ; # if IS_ENABLED ( CONFIG_IPV6 ) } else if ( family == AF_INET6 ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct ipv6hdr * ip6 = ipv6_hdr ( skb ) ; struct sockaddr_in6 * sin6 = ( struct sockaddr_in6 * ) msg -> msg_name ; <S2SV_StartBug> sin6 -> sin6_family = AF_INET6 ; <S2SV_EndBug> sin6 -> sin6_port = 0 ; sin6 -> sin6_addr = ip6 -> saddr ; sin6 -> sin6_flowinfo = 0 ; if ( np -> sndflow ) sin6 -> sin6_flowinfo = ip6_flowinfo ( ip6 ) ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , IP6CB ( skb ) -> iif ) ; <S2SV_StartBug> * addr_len = sizeof ( * sin6 ) ; <S2SV_EndBug> if ( inet6_sk ( sk ) -> rxopt . all ) pingv6_ops . ip6_datagram_recv_ctl ( sk , msg , skb ) ; # endif } else { BUG ( ) ; } err = copied ; done : skb_free_datagram ( sk , skb ) ; out : pr_debug ( \"ping_recvmsg<S2SV_blank>-><S2SV_blank>%d\\\\n\" , err ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> msg_name ; if ( sin ) { <S2SV_ModStart> sin ) ; } <S2SV_ModStart> -> msg_name ; if ( sin6 ) { <S2SV_ModStart> sin6 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6546\n\n```\nCWE-200 int vcc_getsockopt ( struct socket * sock , int level , int optname , char __user * optval , int __user * optlen ) { struct atm_vcc * vcc ; int len ; if ( get_user ( len , optlen ) ) return - EFAULT ; if ( __SO_LEVEL_MATCH ( optname , level ) && len != __SO_SIZE ( optname ) ) return - EINVAL ; vcc = ATM_SD ( sock ) ; switch ( optname ) { case SO_ATMQOS : if ( ! test_bit ( ATM_VF_HASQOS , & vcc -> flags ) ) return - EINVAL ; return copy_to_user ( optval , & vcc -> qos , sizeof ( vcc -> qos ) ) ? - EFAULT : 0 ; case SO_SETCLP : return put_user ( vcc -> atm_options & ATM_ATMOPT_CLP ? 1 : 0 , ( unsigned long __user * ) optval ) ? - EFAULT : 0 ; case SO_ATMPVC : { struct sockaddr_atmpvc pvc ; if ( ! vcc -> dev || ! test_bit ( ATM_VF_ADDR , & vcc -> flags ) ) return - ENOTCONN ; <S2SV_StartBug> pvc . sap_family = AF_ATMPVC ; <S2SV_EndBug> pvc . sap_addr . itf = vcc -> dev -> number ; pvc . sap_addr . vpi = vcc -> vpi ; pvc . sap_addr . vci = vcc -> vci ; return copy_to_user ( optval , & pvc , sizeof ( pvc ) ) ? - EFAULT : 0 ; } default : if ( level == SOL_SOCKET ) return - EINVAL ; break ; } if ( ! vcc -> dev || ! vcc -> dev -> ops -> getsockopt ) return - EINVAL ; return vcc -> dev -> ops -> getsockopt ( vcc , level , optname , optval , len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOTCONN ; memset ( & pvc , 0 , sizeof ( pvc ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6663\n\n```\nCWE-362 int my_redel ( const char * org_name , const char * tmp_name , myf MyFlags ) { int error = 1 ; DBUG_ENTER ( \"my_redel\" ) ; DBUG_PRINT ( \"my\" , ( \"org_name:<S2SV_blank>\\'%s\\'<S2SV_blank>tmp_name:<S2SV_blank>\\'%s\\'<S2SV_blank><S2SV_blank>MyFlags:<S2SV_blank>%d\" , org_name , tmp_name , MyFlags ) ) ; <S2SV_StartBug> if ( my_copystat ( org_name , tmp_name , MyFlags ) < 0 ) <S2SV_EndBug> <S2SV_StartBug> goto end ; <S2SV_EndBug> if ( MyFlags & MY_REDEL_MAKE_BACKUP ) { char name_buff [ FN_REFLEN + 20 ] ; char ext [ 20 ] ; ext [ 0 ] = '-' ; get_date ( ext + 1 , 2 + 4 , ( time_t ) 0 ) ; strmov ( strend ( ext ) , REDEL_EXT ) ; if ( my_rename ( org_name , fn_format ( name_buff , org_name , \"\" , ext , 2 ) , MyFlags ) ) goto end ; } else if ( my_delete_allow_opened ( org_name , MyFlags ) ) goto end ; if ( my_rename ( tmp_name , org_name , MyFlags ) ) goto end ; error = 0 ; end : DBUG_RETURN ( error ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! ( MyFlags & MY_REDEL_NO_COPY_STAT ) ) { if ( <S2SV_ModStart> goto end ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 int jas_stream_read ( jas_stream_t * stream , void * buf , int cnt ) { int n ; int c ; <S2SV_StartBug> char * bufptr ; <S2SV_EndBug> bufptr = buf ; n = 0 ; while ( n < cnt ) { if ( ( c = jas_stream_getc ( stream ) ) == EOF ) { return n ; } * bufptr ++ = c ; ++ n ; } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * bufptr ; if ( cnt < 0 ) { jas_deprecated ( \"negative<S2SV_blank>count<S2SV_blank>for<S2SV_blank>jas_stream_read\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2697\n\n```\nCWE-119 static krb5_error_code build_principal_va ( krb5_context context , krb5_principal princ , unsigned int rlen , const char * realm , va_list ap ) { krb5_error_code retval = 0 ; char * r = NULL ; krb5_data * data = NULL ; krb5_int32 count = 0 ; krb5_int32 size = 2 ; char * component = NULL ; data = malloc ( size * sizeof ( krb5_data ) ) ; if ( ! data ) { retval = ENOMEM ; } <S2SV_StartBug> if ( ! retval ) { <S2SV_EndBug> r = strdup ( realm ) ; if ( ! r ) { retval = ENOMEM ; } } while ( ! retval && ( component = va_arg ( ap , char * ) ) ) { if ( count == size ) { krb5_data * new_data = NULL ; size *= 2 ; new_data = realloc ( data , size * sizeof ( krb5_data ) ) ; if ( new_data ) { data = new_data ; } else { retval = ENOMEM ; } } if ( ! retval ) { data [ count ] . length = strlen ( component ) ; data [ count ] . data = strdup ( component ) ; if ( ! data [ count ] . data ) { retval = ENOMEM ; } count ++ ; } } if ( ! retval ) { princ -> type = KRB5_NT_UNKNOWN ; princ -> magic = KV5M_PRINCIPAL ; princ -> realm = make_data ( r , rlen ) ; princ -> data = data ; princ -> length = count ; r = NULL ; data = NULL ; } if ( data ) { while ( -- count >= 0 ) { free ( data [ count ] . data ) ; } free ( data ) ; } free ( r ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! retval ) r = k5memdup0 ( realm , rlen , & retval ) ; <S2SV_ModEnd> while ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2636\n\n```\nCWE-399 static int br_mdb_fill_info ( struct sk_buff * skb , struct netlink_callback * cb , struct net_device * dev ) { struct net_bridge * br = netdev_priv ( dev ) ; struct net_bridge_mdb_htable * mdb ; struct nlattr * nest , * nest2 ; int i , err = 0 ; int idx = 0 , s_idx = cb -> args [ 1 ] ; if ( br -> multicast_disabled ) return 0 ; mdb = rcu_dereference ( br -> mdb ) ; if ( ! mdb ) return 0 ; nest = nla_nest_start ( skb , MDBA_MDB ) ; if ( nest == NULL ) return - EMSGSIZE ; for ( i = 0 ; i < mdb -> max ; i ++ ) { struct net_bridge_mdb_entry * mp ; struct net_bridge_port_group * p , * * pp ; struct net_bridge_port * port ; hlist_for_each_entry_rcu ( mp , & mdb -> mhash [ i ] , hlist [ mdb -> ver ] ) { if ( idx < s_idx ) goto skip ; nest2 = nla_nest_start ( skb , MDBA_MDB_ENTRY ) ; if ( nest2 == NULL ) { err = - EMSGSIZE ; goto out ; } for ( pp = & mp -> ports ; ( p = rcu_dereference ( * pp ) ) != NULL ; pp = & p -> next ) { port = p -> port ; if ( port ) { struct br_mdb_entry e ; <S2SV_StartBug> e . ifindex = port -> dev -> ifindex ; <S2SV_EndBug> e . state = p -> state ; if ( p -> addr . proto == htons ( ETH_P_IP ) ) e . addr . u . ip4 = p -> addr . u . ip4 ; # if IS_ENABLED ( CONFIG_IPV6 ) if ( p -> addr . proto == htons ( ETH_P_IPV6 ) ) e . addr . u . ip6 = p -> addr . u . ip6 ; # endif e . addr . proto = p -> addr . proto ; if ( nla_put ( skb , MDBA_MDB_ENTRY_INFO , sizeof ( e ) , & e ) ) { nla_nest_cancel ( skb , nest2 ) ; err = - EMSGSIZE ; goto out ; } } } nla_nest_end ( skb , nest2 ) ; skip : idx ++ ; } } out : cb -> args [ 1 ] = idx ; nla_nest_end ( skb , nest ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> br_mdb_entry e ; memset ( & e , 0 , sizeof ( e ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20836\n\n```\nCWE-416 static void smp_task_timedout ( struct timer_list * t ) { struct sas_task_slow * slow = from_timer ( slow , t , timer ) ; struct sas_task * task = slow -> task ; unsigned long flags ; spin_lock_irqsave ( & task -> task_state_lock , flags ) ; <S2SV_StartBug> if ( ! ( task -> task_state_flags & SAS_TASK_STATE_DONE ) ) <S2SV_EndBug> <S2SV_StartBug> task -> task_state_flags |= SAS_TASK_STATE_ABORTED ; <S2SV_EndBug> spin_unlock_irqrestore ( & task -> task_state_lock , flags ) ; complete ( & task -> slow_task -> completion ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SAS_TASK_STATE_DONE ) ) { <S2SV_ModStart> task_state_flags |= SAS_TASK_STATE_ABORTED <S2SV_ModEnd> ; complete ( <S2SV_ModStart> ) ; } spin_unlock_irqrestore ( & task -> task_state_lock , flags ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 ssize_t cdf_read_short_sector ( const cdf_stream_t * sst , void * buf , size_t offs , size_t len , const cdf_header_t * h , cdf_secid_t id ) { <S2SV_StartBug> assert ( ( size_t ) CDF_SHORT_SEC_SIZE ( h ) == len ) ; <S2SV_EndBug> ( void ) memcpy ( ( ( char * ) buf ) + offs , <S2SV_StartBug> ( ( const char * ) sst -> sst_tab ) + CDF_SHORT_SEC_POS ( h , id ) , len ) ; <S2SV_EndBug> return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ) { size_t ss = <S2SV_ModEnd> CDF_SHORT_SEC_SIZE ( h <S2SV_ModStart> ( h ) ; size_t pos = CDF_SHORT_SEC_POS ( h , id ) ; assert ( ss <S2SV_ModStart> len ) ; if ( sst -> sst_len < ( size_t ) id ) { DPRINTF ( ( \"bad<S2SV_blank>sector<S2SV_blank>id<S2SV_blank>%d<S2SV_blank>><S2SV_blank>%d\\\\n\" , id , sst -> sst_len ) ) ; return - 1 ; } <S2SV_ModStart> sst_tab ) + pos <S2SV_ModEnd> , len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void <S2SV_StartBug> l2tp_proxy_auth_type_print ( netdissect_options * ndo , const u_char * dat ) <S2SV_EndBug> { <S2SV_StartBug> const uint16_t * ptr = ( const uint16_t * ) dat ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , tok2str ( l2tp_authentype2str , \"AuthType-#%u\" , EXTRACT_16BITS ( ptr ) ) ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_char * dat , u_int length <S2SV_ModStart> ) dat ; if ( length < 2 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static int _hostsock_getsockopt ( oe_fd_t * sock_ , int level , int optname , void * optval , oe_socklen_t * optlen ) { int ret = - 1 ; sock_t * sock = _cast_sock ( sock_ ) ; oe_socklen_t optlen_in = 0 ; <S2SV_StartBug> oe_errno = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( ! sock ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( optlen ) <S2SV_EndBug> optlen_in = * optlen ; if ( oe_syscall_getsockopt_ocall ( <S2SV_StartBug> & ret , sock -> host_fd , level , optname , optval , optlen_in , optlen ) != <S2SV_EndBug> OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> done : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; oe_socklen_t optlen_out = 0 ; <S2SV_ModStart> ( ! sock || ! optval || ! optlen <S2SV_ModStart> OE_EINVAL ) ; <S2SV_ModEnd> optlen_in = * <S2SV_ModStart> , optlen_in , & optlen_out <S2SV_ModEnd> ) != OE_OK <S2SV_ModStart> ) ; } if ( optlen_out > optlen_in ) optlen_out = optlen_in ; * optlen = optlen_out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8970\n\n```\nCWE-476 static int skcipher_setkey ( void * private , const u8 * key , unsigned int keylen ) { <S2SV_StartBug> return crypto_skcipher_setkey ( private , key , keylen ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> keylen ) { struct skcipher_tfm * tfm = private ; int err ; err = crypto_skcipher_setkey ( tfm -> skcipher <S2SV_ModEnd> , key , <S2SV_ModStart> keylen ) ; tfm -> has_key = ! err ; return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13010\n\n```\nCWE-125 void beep_print ( netdissect_options * ndo , const u_char * bp , u_int length ) { <S2SV_StartBug> if ( l_strnstart ( \"MSG\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>MSG\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"RPY<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>RPY\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"ERR<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>ERR\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"ANS<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>ANS\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"NUL<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>NUL\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"SEQ<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>SEQ\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"END\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>END\" ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>(payload<S2SV_blank>or<S2SV_blank>undecoded)\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6439\n\n```\nCWE-787 static plist_t parse_bin_node ( struct bplist_data * bplist , const char * * object ) { uint16_t type = 0 ; uint64_t size = 0 ; if ( ! object ) return NULL ; type = ( * * object ) & BPLIST_MASK ; size = ( * * object ) & BPLIST_FILL ; ( * object ) ++ ; if ( size == BPLIST_FILL ) { switch ( type ) { case BPLIST_DATA : case BPLIST_STRING : case BPLIST_UNICODE : case BPLIST_ARRAY : case BPLIST_SET : case BPLIST_DICT : { uint16_t next_size = * * object & BPLIST_FILL ; if ( ( * * object & BPLIST_MASK ) != BPLIST_UINT ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>invalid<S2SV_blank>size<S2SV_blank>node<S2SV_blank>type<S2SV_blank>for<S2SV_blank>node<S2SV_blank>type<S2SV_blank>0x%02x:<S2SV_blank>found<S2SV_blank>0x%02x,<S2SV_blank>expected<S2SV_blank>0x%02x\\\\n\" , __func__ , type , * * object & BPLIST_MASK , BPLIST_UINT ) ; return NULL ; } ( * object ) ++ ; next_size = 1 << next_size ; if ( * object + next_size > bplist -> offset_table ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>size<S2SV_blank>node<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>for<S2SV_blank>node<S2SV_blank>type<S2SV_blank>0x%02x<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ , type ) ; return NULL ; } size = UINT_TO_HOST ( * object , next_size ) ; ( * object ) += next_size ; break ; } default : break ; } } switch ( type ) { case BPLIST_NULL : switch ( size ) { case BPLIST_TRUE : { plist_data_t data = plist_new_plist_data ( ) ; data -> type = PLIST_BOOLEAN ; data -> boolval = TRUE ; data -> length = 1 ; return node_create ( NULL , data ) ; } case BPLIST_FALSE : { plist_data_t data = plist_new_plist_data ( ) ; data -> type = PLIST_BOOLEAN ; data -> boolval = FALSE ; data -> length = 1 ; return node_create ( NULL , data ) ; } case BPLIST_NULL : default : return NULL ; } case BPLIST_UINT : if ( * object + ( uint64_t ) ( 1 << size ) > bplist -> offset_table ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_UINT<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_uint_node ( object , size ) ; case BPLIST_REAL : if ( * object + ( uint64_t ) ( 1 << size ) > bplist -> offset_table ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_REAL<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_real_node ( object , size ) ; case BPLIST_DATE : if ( 3 != size ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>invalid<S2SV_blank>data<S2SV_blank>size<S2SV_blank>for<S2SV_blank>BPLIST_DATE<S2SV_blank>node\\\\n\" , __func__ ) ; return NULL ; } if ( * object + ( uint64_t ) ( 1 << size ) > bplist -> offset_table ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_DATE<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_date_node ( object , size ) ; case BPLIST_DATA : <S2SV_StartBug> if ( * object + size > bplist -> offset_table ) { <S2SV_EndBug> PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_DATA<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_data_node ( object , size ) ; case BPLIST_STRING : <S2SV_StartBug> if ( * object + size > bplist -> offset_table ) { <S2SV_EndBug> PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_STRING<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_string_node ( object , size ) ; case BPLIST_UNICODE : if ( size * 2 < size ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>Integer<S2SV_blank>overflow<S2SV_blank>when<S2SV_blank>calculating<S2SV_blank>BPLIST_UNICODE<S2SV_blank>data<S2SV_blank>size.\\\\n\" , __func__ ) ; return NULL ; } <S2SV_StartBug> if ( * object + size * 2 > bplist -> offset_table ) { <S2SV_EndBug> PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_UNICODE<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_unicode_node ( object , size ) ; case BPLIST_SET : case BPLIST_ARRAY : <S2SV_StartBug> if ( * object + size > bplist -> offset_table ) { <S2SV_EndBug> PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_ARRAY<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_array_node ( bplist , object , size ) ; case BPLIST_UID : if ( * object + size + 1 > bplist -> offset_table ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_UID<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_uid_node ( object , size ) ; case BPLIST_DICT : <S2SV_StartBug> if ( * object + size > bplist -> offset_table ) { <S2SV_EndBug> PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_REAL<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" , __func__ ) ; return NULL ; } return parse_dict_node ( bplist , object , size ) ; default : PLIST_BIN_ERR ( \"%s:<S2SV_blank>unexpected<S2SV_blank>node<S2SV_blank>type<S2SV_blank>0x%02x\\\\n\" , __func__ , type ) ; return NULL ; } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> object + size < * object || * object + size <S2SV_ModStart> : if ( * object + size < * object || <S2SV_ModStart> size * 2 < * object || * object + size * 2 <S2SV_ModStart> object + size < * object || * object + size <S2SV_ModStart> object + size < * object || * object + size > bplist -> offset_table ) { PLIST_BIN_ERR ( \"%s:<S2SV_blank>BPLIST_DICT<S2SV_blank>data<S2SV_blank>bytes<S2SV_blank>point<S2SV_blank>outside<S2SV_blank>of<S2SV_blank>valid<S2SV_blank>range\\\\n\" <S2SV_ModEnd> , __func__ )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15474\n\n```\nCWE-787 static int extractRDNSequence ( struct ndpi_packet_struct * packet , u_int offset , char * buffer , u_int buffer_len , char * rdnSeqBuf , u_int * rdnSeqBuf_offset , u_int rdnSeqBuf_len , const char * label ) { u_int8_t str_len = packet -> payload [ offset + 4 ] , is_printable = 1 ; char * str ; <S2SV_StartBug> u_int len , j ; <S2SV_EndBug> if ( ( offset + 4 + str_len ) >= packet -> payload_packet_len ) return ( - 1 ) ; str = ( char * ) & packet -> payload [ offset + 5 ] ; len = ( u_int ) ndpi_min ( str_len , buffer_len - 1 ) ; strncpy ( buffer , str , len ) ; buffer [ len ] = '\\\\0' ; for ( j = 0 ; j < len ; j ++ ) { if ( ! ndpi_isprint ( buffer [ j ] ) ) { is_printable = 0 ; break ; } } if ( is_printable ) { int rc = snprintf ( & rdnSeqBuf [ * rdnSeqBuf_offset ] , rdnSeqBuf_len - ( * rdnSeqBuf_offset ) , \"%s%s=%s\" , ( * rdnSeqBuf_offset > 0 ) ? \",<S2SV_blank>\" : \"\" , label , buffer ) ; if ( rc > 0 ) ( * rdnSeqBuf_offset ) += rc ; } return ( is_printable ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , j ; if ( * rdnSeqBuf_offset >= rdnSeqBuf_len ) { # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>[buffer<S2SV_blank>capacity<S2SV_blank>reached][%u]\\\\n\" , __FUNCTION__ , rdnSeqBuf_len ) ; # endif return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-20005\n\n```\nCWE-000 void ngx_gmtime ( time_t t , ngx_tm_t * tp ) { ngx_int_t yday ; ngx_uint_t sec , min , hour , mday , mon , year , wday , days , leap ; if ( t < 0 ) { t = 0 ; } days = t / 86400 ; <S2SV_StartBug> sec = t % 86400 ; <S2SV_EndBug> wday = ( 4 + days ) % 7 ; hour = sec / 3600 ; sec %= 3600 ; min = sec / 60 ; sec %= 60 ; days = days - ( 31 + 28 ) + 719527 ; year = ( days + 2 ) * 400 / ( 365 * 400 + 100 - 4 + 1 ) ; yday = days - ( 365 * year + year / 4 - year / 100 + year / 400 ) ; if ( yday < 0 ) { leap = ( year % 4 == 0 ) && ( year % 100 || ( year % 400 == 0 ) ) ; yday = 365 + leap + yday ; year -- ; } mon = ( yday + 31 ) * 10 / 306 ; mday = yday - ( 367 * mon / 12 - 30 ) + 1 ; if ( yday >= 306 ) { year ++ ; mon -= 10 ; } else { mon += 2 ; } tp -> ngx_tm_sec = ( ngx_tm_sec_t ) sec ; tp -> ngx_tm_min = ( ngx_tm_min_t ) min ; tp -> ngx_tm_hour = ( ngx_tm_hour_t ) hour ; tp -> ngx_tm_mday = ( ngx_tm_mday_t ) mday ; tp -> ngx_tm_mon = ( ngx_tm_mon_t ) mon ; tp -> ngx_tm_year = ( ngx_tm_year_t ) year ; tp -> ngx_tm_wday = ( ngx_tm_wday_t ) wday ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> % 86400 ; if ( days > 2932896 ) { days = 2932896 ; sec = 86399 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1237\n\n```\nCWE-284 __be32 nfsd4_set_nfs4_acl ( struct svc_rqst * rqstp , struct svc_fh * fhp , struct nfs4_acl * acl ) { __be32 error ; int host_error ; struct dentry * dentry ; struct inode * inode ; struct posix_acl * pacl = NULL , * dpacl = NULL ; unsigned int flags = 0 ; error = fh_verify ( rqstp , fhp , 0 , NFSD_MAY_SATTR ) ; if ( error ) return error ; dentry = fhp -> fh_dentry ; inode = d_inode ( dentry ) ; <S2SV_StartBug> if ( ! inode -> i_op -> set_acl || ! IS_POSIXACL ( inode ) ) <S2SV_EndBug> return nfserr_attrnotsupp ; if ( S_ISDIR ( inode -> i_mode ) ) flags = NFS4_ACL_DIR ; host_error = nfs4_acl_nfsv4_to_posix ( acl , & pacl , & dpacl , flags ) ; if ( host_error == - EINVAL ) return nfserr_attrnotsupp ; if ( host_error < 0 ) goto out_nfserr ; <S2SV_StartBug> host_error = inode -> i_op -> set_acl ( inode , pacl , ACL_TYPE_ACCESS ) ; <S2SV_EndBug> if ( host_error < 0 ) <S2SV_StartBug> goto out_release ; <S2SV_EndBug> if ( S_ISDIR ( inode -> i_mode ) ) { <S2SV_StartBug> host_error = inode -> i_op -> set_acl ( inode , dpacl , <S2SV_EndBug> ACL_TYPE_DEFAULT ) ; } <S2SV_StartBug> out_release : <S2SV_EndBug> posix_acl_release ( pacl ) ; posix_acl_release ( dpacl ) ; out_nfserr : if ( host_error == - EOPNOTSUPP ) return nfserr_attrnotsupp ; else return nfserrno ( host_error ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> S_ISDIR ( inode <S2SV_ModStart> goto out_nfserr ; fh_lock ( fhp ) ; host_error = set_posix_acl ( inode , ACL_TYPE_ACCESS , pacl <S2SV_ModEnd> ) ; if <S2SV_ModStart> 0 ) goto out_drop_lock <S2SV_ModEnd> ; if ( <S2SV_ModStart> { host_error = set_posix_acl ( inode , ACL_TYPE_DEFAULT , dpacl <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } out_drop_lock : fh_unlock ( fhp ) ; <S2SV_ModEnd> posix_acl_release ( pacl\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 SQLRETURN SQLSetDescFieldW ( SQLHDESC descriptor_handle , SQLSMALLINT rec_number , SQLSMALLINT field_identifier , SQLPOINTER value , SQLINTEGER buffer_length ) { DMHDESC descriptor = ( DMHDESC ) descriptor_handle ; SQLRETURN ret ; SQLCHAR s1 [ 100 + LOG_MESSAGE_LEN ] ; int isStrField = 0 ; if ( ! __validate_desc ( descriptor ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>SQL_INVALID_HANDLE\" ) ; # ifdef WITH_HANDLE_REDIRECT { DMHDESC parent_desc ; parent_desc = find_parent_handle ( descriptor , SQL_HANDLE_DESC ) ; if ( parent_desc ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Info:<S2SV_blank>found<S2SV_blank>parent<S2SV_blank>handle\" ) ; if ( CHECK_SQLSETDESCFIELDW ( parent_desc -> connection ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Info:<S2SV_blank>calling<S2SV_blank>redirected<S2SV_blank>driver<S2SV_blank>function\" ) ; return SQLSETDESCFIELDW ( parent_desc -> connection , descriptor , rec_number , field_identifier , value , buffer_length ) ; } } } # endif return SQL_INVALID_HANDLE ; } function_entry ( descriptor ) ; if ( log_info . log_flag ) { <S2SV_StartBug> sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tEntry:\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tDescriptor<S2SV_blank>=<S2SV_blank>%p\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tRec<S2SV_blank>Number<S2SV_blank>=<S2SV_blank>%d\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tField<S2SV_blank>Ident<S2SV_blank>=<S2SV_blank>%s\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tValue<S2SV_blank>=<S2SV_blank>%p\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tBuffer<S2SV_blank>Length<S2SV_blank>=<S2SV_blank>%d\" , <S2SV_EndBug> descriptor , rec_number , __desc_attr_as_string ( s1 , field_identifier ) , value , ( int ) buffer_length ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } thread_protect ( SQL_HANDLE_DESC , descriptor ) ; if ( descriptor -> connection -> state < STATE_C4 ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>HY010\" ) ; __post_internal_error ( & descriptor -> error , ERROR_HY010 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( __check_stmt_from_desc ( descriptor , STATE_S8 ) || __check_stmt_from_desc ( descriptor , STATE_S9 ) || __check_stmt_from_desc ( descriptor , STATE_S10 ) || __check_stmt_from_desc ( descriptor , STATE_S11 ) || __check_stmt_from_desc ( descriptor , STATE_S12 ) || __check_stmt_from_desc ( descriptor , STATE_S13 ) || __check_stmt_from_desc ( descriptor , STATE_S14 ) || __check_stmt_from_desc ( descriptor , STATE_S15 ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>HY010\" ) ; __post_internal_error ( & descriptor -> error , ERROR_HY010 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( rec_number < 0 ) { __post_internal_error ( & descriptor -> error , ERROR_07009 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } switch ( field_identifier ) { case SQL_DESC_ALLOC_TYPE : case SQL_DESC_ARRAY_SIZE : case SQL_DESC_ARRAY_STATUS_PTR : case SQL_DESC_BIND_OFFSET_PTR : case SQL_DESC_BIND_TYPE : case SQL_DESC_COUNT : case SQL_DESC_ROWS_PROCESSED_PTR : case SQL_DESC_AUTO_UNIQUE_VALUE : case SQL_DESC_CASE_SENSITIVE : case SQL_DESC_CONCISE_TYPE : case SQL_DESC_DATA_PTR : case SQL_DESC_DATETIME_INTERVAL_CODE : case SQL_DESC_DATETIME_INTERVAL_PRECISION : case SQL_DESC_DISPLAY_SIZE : case SQL_DESC_FIXED_PREC_SCALE : case SQL_DESC_INDICATOR_PTR : case SQL_DESC_LENGTH : case SQL_DESC_NULLABLE : case SQL_DESC_NUM_PREC_RADIX : case SQL_DESC_OCTET_LENGTH : case SQL_DESC_OCTET_LENGTH_PTR : case SQL_DESC_PARAMETER_TYPE : case SQL_DESC_PRECISION : case SQL_DESC_ROWVER : case SQL_DESC_SCALE : case SQL_DESC_SEARCHABLE : case SQL_DESC_TYPE : case SQL_DESC_UNNAMED : case SQL_DESC_UNSIGNED : case SQL_DESC_UPDATABLE : isStrField = 0 ; break ; case SQL_DESC_BASE_COLUMN_NAME : case SQL_DESC_BASE_TABLE_NAME : case SQL_DESC_CATALOG_NAME : case SQL_DESC_LABEL : case SQL_DESC_LITERAL_PREFIX : case SQL_DESC_LITERAL_SUFFIX : case SQL_DESC_LOCAL_TYPE_NAME : case SQL_DESC_NAME : case SQL_DESC_SCHEMA_NAME : case SQL_DESC_TABLE_NAME : case SQL_DESC_TYPE_NAME : isStrField = 1 ; break ; default : isStrField = buffer_length != SQL_IS_POINTER && buffer_length != SQL_IS_INTEGER && buffer_length != SQL_IS_UINTEGER && buffer_length != SQL_IS_SMALLINT && buffer_length != SQL_IS_USMALLINT ; } if ( isStrField && buffer_length < 0 && buffer_length != SQL_NTS ) { __post_internal_error ( & descriptor -> error , ERROR_HY090 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } <S2SV_StartBug> if ( field_identifier == SQL_DESC_COUNT && ( SQLINTEGER ) value < 0 ) <S2SV_EndBug> { __post_internal_error ( & descriptor -> error , ERROR_07009 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } <S2SV_StartBug> if ( field_identifier == SQL_DESC_PARAMETER_TYPE && value != SQL_PARAM_INPUT <S2SV_EndBug> <S2SV_StartBug> && value != SQL_PARAM_OUTPUT && value != SQL_PARAM_INPUT_OUTPUT && <S2SV_EndBug> <S2SV_StartBug> value != SQL_PARAM_INPUT_OUTPUT_STREAM && value != SQL_PARAM_OUTPUT_STREAM ) <S2SV_EndBug> { __post_internal_error ( & descriptor -> error , ERROR_HY105 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( descriptor -> connection -> unicode_driver || CHECK_SQLSETDESCFIELDW ( descriptor -> connection ) ) { if ( ! CHECK_SQLSETDESCFIELDW ( descriptor -> connection ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>IM001\" ) ; __post_internal_error ( & descriptor -> error , ERROR_IM001 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } ret = SQLSETDESCFIELDW ( descriptor -> connection , descriptor -> driver_desc , rec_number , field_identifier , value , buffer_length ) ; if ( log_info . log_flag ) { sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tExit:[%s]\" , __get_return_status ( ret , s1 ) ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } } else { SQLCHAR * ascii_str = NULL ; if ( ! CHECK_SQLSETDESCFIELD ( descriptor -> connection ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>IM001\" ) ; __post_internal_error ( & descriptor -> error , ERROR_IM001 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } switch ( field_identifier ) { case SQL_DESC_NAME : ascii_str = ( SQLCHAR * ) unicode_to_ansi_alloc ( value , buffer_length , descriptor -> connection , NULL ) ; value = ascii_str ; buffer_length = strlen ( ( char * ) ascii_str ) ; break ; default : break ; } ret = SQLSETDESCFIELD ( descriptor -> connection , descriptor -> driver_desc , rec_number , field_identifier , value , buffer_length ) ; if ( log_info . log_flag ) { sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tExit:[%s]\" , __get_return_status ( ret , s1 ) ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } if ( ascii_str ) { free ( ascii_str ) ; } } return function_return ( SQL_HANDLE_DESC , descriptor , ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> msg , \"\\\\n\\\\t\\\\tEntry:\\\\\\n\\\\n\\\\t\\\\t\\\\tDescriptor<S2SV_blank>=<S2SV_blank>%p\\\\\\n\\\\n\\\\t\\\\t\\\\tRec<S2SV_blank>Number<S2SV_blank>=<S2SV_blank>%d\\\\\\n\\\\n\\\\t\\\\t\\\\tField<S2SV_blank>Ident<S2SV_blank>=<S2SV_blank>%s\\\\\\n\\\\n\\\\t\\\\t\\\\tValue<S2SV_blank>=<S2SV_blank>%p\\\\\\n\\\\n\\\\t\\\\t\\\\tBuffer<S2SV_blank>Length<S2SV_blank>=<S2SV_blank>%d\" <S2SV_ModEnd> , descriptor , <S2SV_ModStart> SQL_DESC_COUNT && ( intptr_t <S2SV_ModEnd> ) value < <S2SV_ModStart> == SQL_DESC_PARAMETER_TYPE && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_OUTPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT_OUTPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT_OUTPUT_STREAM && ( intptr_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void enc624j600WritePhyReg ( NetInterface * interface , uint8_t address , uint16_t data ) { <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MIREGADR , MIREGADR_R8 | address ) ; <S2SV_EndBug> <S2SV_StartBug> enc624j600WriteReg ( interface , ENC624J600_REG_MIWR , data ) ; <S2SV_EndBug> <S2SV_StartBug> while ( ( enc624j600ReadReg ( interface , ENC624J600_REG_MISTAT ) & MISTAT_BUSY ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { uint16_t status ; <S2SV_ModStart> ( interface , ENC624J600_MIREGADR , ENC624J600_MIREGADR_R12_8_DEFAULT <S2SV_ModEnd> | address ) <S2SV_ModStart> ( interface , ENC624J600_MIWR <S2SV_ModEnd> , data ) <S2SV_ModStart> data ) ; do { status = <S2SV_ModEnd> enc624j600ReadReg ( interface <S2SV_ModStart> ( interface , ENC624J600_MISTAT ) ; } while ( ( status & ENC624J600_MISTAT_BUSY <S2SV_ModEnd> ) != 0 <S2SV_ModStart> != 0 ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11087\n\n```\nCWE-125 SECURITY_STATUS ntlm_read_AuthenticateMessage ( NTLM_CONTEXT * context , PSecBuffer buffer ) { <S2SV_StartBug> wStream * s ; <S2SV_EndBug> size_t length ; <S2SV_StartBug> UINT32 flags ; <S2SV_EndBug> <S2SV_StartBug> NTLM_AV_PAIR * AvFlags ; <S2SV_EndBug> UINT32 PayloadBufferOffset ; NTLM_AUTHENTICATE_MESSAGE * message ; SSPI_CREDENTIALS * credentials = context -> credentials ; <S2SV_StartBug> flags = 0 ; <S2SV_EndBug> AvFlags = NULL ; message = & context -> AUTHENTICATE_MESSAGE ; ZeroMemory ( message , sizeof ( NTLM_AUTHENTICATE_MESSAGE ) ) ; s = Stream_New ( ( BYTE * ) buffer -> pvBuffer , buffer -> cbBuffer ) ; if ( ! s ) return SEC_E_INTERNAL_ERROR ; if ( ntlm_read_message_header ( s , ( NTLM_MESSAGE_HEADER * ) message ) < 0 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( message -> MessageType != MESSAGE_TYPE_AUTHENTICATE ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( ntlm_read_message_fields ( s , & ( message -> LmChallengeResponse ) ) < 0 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( ntlm_read_message_fields ( s , & ( message -> NtChallengeResponse ) ) < 0 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( ntlm_read_message_fields ( s , & ( message -> DomainName ) ) < 0 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( ntlm_read_message_fields ( s , & ( message -> UserName ) ) < 0 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( ntlm_read_message_fields ( s , & ( message -> Workstation ) ) < 0 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( ntlm_read_message_fields ( s , & ( message -> EncryptedRandomSessionKey ) ) < 0 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } Stream_Read_UINT32 ( s , message -> NegotiateFlags ) ; context -> NegotiateKeyExchange = ( message -> NegotiateFlags & NTLMSSP_NEGOTIATE_KEY_EXCH ) ? TRUE : FALSE ; if ( ( context -> NegotiateKeyExchange && ! message -> EncryptedRandomSessionKey . Len ) || ( ! context -> NegotiateKeyExchange && message -> EncryptedRandomSessionKey . Len ) ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( message -> NegotiateFlags & NTLMSSP_NEGOTIATE_VERSION ) { if ( ntlm_read_version_info ( s , & ( message -> Version ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } } PayloadBufferOffset = Stream_GetPosition ( s ) ; if ( ntlm_read_message_fields_buffer ( s , & ( message -> DomainName ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } if ( ntlm_read_message_fields_buffer ( s , & ( message -> UserName ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } if ( ntlm_read_message_fields_buffer ( s , & ( message -> Workstation ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } if ( ntlm_read_message_fields_buffer ( s , & ( message -> LmChallengeResponse ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } if ( ntlm_read_message_fields_buffer ( s , & ( message -> NtChallengeResponse ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } if ( message -> NtChallengeResponse . Len > 0 ) { size_t cbAvFlags ; wStream * snt = Stream_New ( message -> NtChallengeResponse . Buffer , message -> NtChallengeResponse . Len ) ; if ( ! snt ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; <S2SV_StartBug> return SEC_E_INTERNAL_ERROR ; <S2SV_EndBug> } if ( ntlm_read_ntlm_v2_response ( snt , & ( context -> NTLMv2Response ) ) < 0 ) { Stream_Free ( s , FALSE ) ; Stream_Free ( snt , FALSE ) ; return SEC_E_INVALID_TOKEN ; } Stream_Free ( snt , FALSE ) ; context -> NtChallengeResponse . pvBuffer = message -> NtChallengeResponse . Buffer ; context -> NtChallengeResponse . cbBuffer = message -> NtChallengeResponse . Len ; sspi_SecBufferFree ( & ( context -> ChallengeTargetInfo ) ) ; context -> ChallengeTargetInfo . pvBuffer = ( void * ) context -> NTLMv2Response . Challenge . AvPairs ; context -> ChallengeTargetInfo . cbBuffer = message -> NtChallengeResponse . Len - ( 28 + 16 ) ; CopyMemory ( context -> ClientChallenge , context -> NTLMv2Response . Challenge . ClientChallenge , 8 ) ; AvFlags = ntlm_av_pair_get ( context -> NTLMv2Response . Challenge . AvPairs , context -> NTLMv2Response . Challenge . cbAvPairs , MsvAvFlags , & cbAvFlags ) ; if ( AvFlags ) Data_Read_UINT32 ( ntlm_av_pair_get_value_pointer ( AvFlags ) , flags ) ; } if ( ntlm_read_message_fields_buffer ( s , & ( message -> EncryptedRandomSessionKey ) ) < 0 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } if ( message -> EncryptedRandomSessionKey . Len > 0 ) { if ( message -> EncryptedRandomSessionKey . Len != 16 ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } CopyMemory ( context -> EncryptedRandomSessionKey , message -> EncryptedRandomSessionKey . Buffer , 16 ) ; } length = Stream_GetPosition ( s ) ; if ( ! sspi_SecBufferAlloc ( & context -> AuthenticateMessage , length ) ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } CopyMemory ( context -> AuthenticateMessage . pvBuffer , Stream_Buffer ( s ) , length ) ; buffer -> cbBuffer = length ; Stream_SetPosition ( s , PayloadBufferOffset ) ; if ( flags & MSV_AV_FLAGS_MESSAGE_INTEGRITY_CHECK ) { context -> MessageIntegrityCheckOffset = ( UINT32 ) Stream_GetPosition ( s ) ; if ( Stream_GetRemainingLength ( s ) < 16 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } Stream_Read ( s , message -> MessageIntegrityCheck , 16 ) ; } # ifdef WITH_DEBUG_NTLM WLog_DBG ( TAG , \"AUTHENTICATE_MESSAGE<S2SV_blank>(length<S2SV_blank>=<S2SV_blank>%\" PRIu32 \")\" , context -> AuthenticateMessage . cbBuffer ) ; winpr_HexDump ( TAG , WLOG_DEBUG , context -> AuthenticateMessage . pvBuffer , context -> AuthenticateMessage . cbBuffer ) ; if ( message -> NegotiateFlags & NTLMSSP_NEGOTIATE_VERSION ) ntlm_print_version_info ( & ( message -> Version ) ) ; ntlm_print_message_fields ( & ( message -> DomainName ) , \"DomainName\" ) ; ntlm_print_message_fields ( & ( message -> UserName ) , \"UserName\" ) ; ntlm_print_message_fields ( & ( message -> Workstation ) , \"Workstation\" ) ; ntlm_print_message_fields ( & ( message -> LmChallengeResponse ) , \"LmChallengeResponse\" ) ; ntlm_print_message_fields ( & ( message -> NtChallengeResponse ) , \"NtChallengeResponse\" ) ; ntlm_print_message_fields ( & ( message -> EncryptedRandomSessionKey ) , \"EncryptedRandomSessionKey\" ) ; ntlm_print_av_pair_list ( context -> NTLMv2Response . Challenge . AvPairs , context -> NTLMv2Response . Challenge . cbAvPairs ) ; if ( flags & MSV_AV_FLAGS_MESSAGE_INTEGRITY_CHECK ) { WLog_DBG ( TAG , \"MessageIntegrityCheck:\" ) ; winpr_HexDump ( TAG , WLOG_DEBUG , message -> MessageIntegrityCheck , 16 ) ; } # endif if ( message -> UserName . Len > 0 ) { credentials -> identity . User = ( UINT16 * ) malloc ( message -> UserName . Len ) ; if ( ! credentials -> identity . User ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } CopyMemory ( credentials -> identity . User , message -> UserName . Buffer , message -> UserName . Len ) ; credentials -> identity . UserLength = message -> UserName . Len / 2 ; } if ( message -> DomainName . Len > 0 ) { credentials -> identity . Domain = ( UINT16 * ) malloc ( message -> DomainName . Len ) ; if ( ! credentials -> identity . Domain ) <S2SV_StartBug> { <S2SV_EndBug> Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } CopyMemory ( credentials -> identity . Domain , message -> DomainName . Buffer , message -> DomainName . Len ) ; credentials -> identity . DomainLength = message -> DomainName . Len / 2 ; } Stream_Free ( s , FALSE ) ; context -> state = NTLM_STATE_COMPLETION ; return SEC_I_COMPLETE_NEEDED ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer ) { SECURITY_STATUS status = SEC_E_INVALID_TOKEN ; <S2SV_ModStart> ; UINT32 flags = 0 <S2SV_ModStart> NTLM_AV_PAIR * AvFlags = NULL <S2SV_ModStart> -> credentials ; <S2SV_ModEnd> message = & <S2SV_ModStart> < 0 ) goto fail ; <S2SV_ModEnd> if ( message <S2SV_ModStart> != MESSAGE_TYPE_AUTHENTICATE ) goto fail ; <S2SV_ModEnd> if ( ntlm_read_message_fields <S2SV_ModStart> < 0 ) goto fail ; <S2SV_ModEnd> if ( ntlm_read_message_fields <S2SV_ModStart> < 0 ) goto fail ; <S2SV_ModEnd> if ( ntlm_read_message_fields <S2SV_ModStart> < 0 ) goto fail ; <S2SV_ModEnd> if ( ntlm_read_message_fields <S2SV_ModStart> < 0 ) goto fail ; <S2SV_ModEnd> if ( ntlm_read_message_fields <S2SV_ModStart> < 0 ) goto fail ; <S2SV_ModEnd> if ( ntlm_read_message_fields <S2SV_ModStart> < 0 ) goto fail ; if ( Stream_GetRemainingLength ( s ) < 4 ) goto fail ; <S2SV_ModEnd> Stream_Read_UINT32 ( s <S2SV_ModStart> Len ) ) goto fail ; if ( message -> NegotiateFlags & NTLMSSP_NEGOTIATE_VERSION ) { if ( ntlm_read_version_info ( s , & ( message -> Version ) ) < 0 ) goto fail ; } PayloadBufferOffset = Stream_GetPosition ( s ) ; status = SEC_E_INTERNAL_ERROR ; if ( ntlm_read_message_fields_buffer ( s , & ( message -> DomainName ) ) < 0 ) goto fail ; if ( ntlm_read_message_fields_buffer ( s , & ( message -> UserName ) ) < 0 ) goto fail ; if ( ntlm_read_message_fields_buffer ( s , & ( message -> Workstation ) ) < 0 ) goto fail ; if ( ntlm_read_message_fields_buffer ( s , & ( message -> LmChallengeResponse ) ) < 0 ) goto fail ; if ( ntlm_read_message_fields_buffer ( s , & ( message -> NtChallengeResponse ) ) < 0 ) goto fail ; if ( message -> NtChallengeResponse . Len > 0 ) { int rc ; <S2SV_ModEnd> size_t cbAvFlags ; <S2SV_ModStart> ! snt ) goto fail ; status = SEC_E_INVALID_TOKEN ; rc = ntlm_read_ntlm_v2_response ( snt , & ( context -> NTLMv2Response ) ) ; Stream_Free ( snt <S2SV_ModEnd> , FALSE ) <S2SV_ModStart> FALSE ) ; if ( rc < 0 ) goto fail ; status = SEC_E_INTERNAL_ERROR <S2SV_ModEnd> ; context -> <S2SV_ModStart> < 0 ) goto fail ; <S2SV_ModEnd> if ( message <S2SV_ModStart> != 16 ) goto fail ; <S2SV_ModEnd> CopyMemory ( context <S2SV_ModStart> length ) ) goto fail ; CopyMemory ( context -> AuthenticateMessage . pvBuffer , Stream_Buffer ( s ) , length ) ; buffer -> cbBuffer = length ; Stream_SetPosition ( s , PayloadBufferOffset ) ; if ( flags & MSV_AV_FLAGS_MESSAGE_INTEGRITY_CHECK ) { context -> MessageIntegrityCheckOffset = ( UINT32 ) Stream_GetPosition ( s ) ; status = SEC_E_INVALID_TOKEN ; if ( Stream_GetRemainingLength ( s ) < 16 ) goto fail ; Stream_Read ( s , message -> MessageIntegrityCheck , 16 ) ; } status = SEC_E_INTERNAL_ERROR ; <S2SV_ModEnd> # ifdef WITH_DEBUG_NTLM <S2SV_ModStart> . User ) goto fail ; <S2SV_ModEnd> CopyMemory ( credentials <S2SV_ModStart> . Domain ) goto fail ; <S2SV_ModEnd> CopyMemory ( credentials <S2SV_ModStart> return SEC_I_COMPLETE_NEEDED ; fail : Stream_Free ( s , FALSE ) ; return status ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2616\n\n```\nCWE-362 static void create_watching_parent ( void ) { pid_t child ; sigset_t ourset ; struct sigaction oldact [ 3 ] ; int status = 0 ; int retval ; retval = pam_open_session ( pamh , 0 ) ; if ( is_pam_failure ( retval ) ) { cleanup_pam ( retval ) ; errx ( EXIT_FAILURE , _ ( \"cannot<S2SV_blank>open<S2SV_blank>session:<S2SV_blank>%s\" ) , pam_strerror ( pamh , retval ) ) ; } else _pam_session_opened = 1 ; memset ( oldact , 0 , sizeof ( oldact ) ) ; child = fork ( ) ; if ( child == ( pid_t ) - 1 ) { cleanup_pam ( PAM_ABORT ) ; err ( EXIT_FAILURE , _ ( \"cannot<S2SV_blank>create<S2SV_blank>child<S2SV_blank>process\" ) ) ; } if ( child == 0 ) return ; if ( chdir ( \"/\" ) != 0 ) warn ( _ ( \"cannot<S2SV_blank>change<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>%s\" ) , \"/\" ) ; sigfillset ( & ourset ) ; if ( sigprocmask ( SIG_BLOCK , & ourset , NULL ) ) { warn ( _ ( \"cannot<S2SV_blank>block<S2SV_blank>signals\" ) ) ; caught_signal = true ; } if ( ! caught_signal ) { struct sigaction action ; action . sa_handler = su_catch_sig ; sigemptyset ( & action . sa_mask ) ; action . sa_flags = 0 ; sigemptyset ( & ourset ) ; if ( ! same_session ) { if ( sigaddset ( & ourset , SIGINT ) || sigaddset ( & ourset , SIGQUIT ) ) { warn ( _ ( \"cannot<S2SV_blank>set<S2SV_blank>signal<S2SV_blank>handler\" ) ) ; caught_signal = true ; } } if ( ! caught_signal && ( sigaddset ( & ourset , SIGTERM ) || sigaddset ( & ourset , SIGALRM ) || sigaction ( SIGTERM , & action , & oldact [ 0 ] ) || sigprocmask ( SIG_UNBLOCK , & ourset , NULL ) ) ) { warn ( _ ( \"cannot<S2SV_blank>set<S2SV_blank>signal<S2SV_blank>handler\" ) ) ; caught_signal = true ; } if ( ! caught_signal && ! same_session && ( sigaction ( SIGINT , & action , & oldact [ 1 ] ) || sigaction ( SIGQUIT , & action , & oldact [ 2 ] ) ) ) { warn ( _ ( \"cannot<S2SV_blank>set<S2SV_blank>signal<S2SV_blank>handler\" ) ) ; caught_signal = true ; } } if ( ! caught_signal ) { pid_t pid ; for ( ; ; ) { pid = waitpid ( child , & status , WUNTRACED ) ; if ( pid != ( pid_t ) - 1 && WIFSTOPPED ( status ) ) { kill ( getpid ( ) , SIGSTOP ) ; kill ( pid , SIGCONT ) ; } else break ; } if ( pid != ( pid_t ) - 1 ) { if ( WIFSIGNALED ( status ) ) { fprintf ( stderr , \"%s%s\\\\n\" , strsignal ( WTERMSIG ( status ) ) , WCOREDUMP ( status ) ? _ ( \"<S2SV_blank>(core<S2SV_blank>dumped)\" ) : \"\" ) ; status = WTERMSIG ( status ) + 128 ; } else status = WEXITSTATUS ( status ) ; <S2SV_StartBug> } <S2SV_EndBug> else if ( caught_signal ) status = caught_signal + 128 ; else status = 1 ; } else status = 1 ; <S2SV_StartBug> if ( caught_signal ) <S2SV_EndBug> { fprintf ( stderr , _ ( \"\\\\nSession<S2SV_blank>terminated,<S2SV_blank>killing<S2SV_blank>shell...\" ) ) ; kill ( child , SIGTERM ) ; } cleanup_pam ( PAM_SUCCESS ) ; if ( caught_signal ) { <S2SV_StartBug> sleep ( 2 ) ; <S2SV_EndBug> kill ( child , SIGKILL ) ; <S2SV_StartBug> fprintf ( stderr , _ ( \"<S2SV_blank>...killed.\\\\n\" ) ) ; <S2SV_EndBug> switch ( caught_signal ) { case SIGTERM : sigaction ( SIGTERM , & oldact [ 0 ] , NULL ) ; break ; case SIGINT : sigaction ( SIGINT , & oldact [ 1 ] , NULL ) ; break ; case SIGQUIT : sigaction ( SIGQUIT , & oldact [ 2 ] , NULL ) ; break ; default : caught_signal = SIGKILL ; break ; } kill ( getpid ( ) , caught_signal ) ; } exit ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> status ) ; child = ( pid_t ) - 1 ; <S2SV_ModStart> if ( caught_signal && child != ( pid_t ) - 1 <S2SV_ModStart> caught_signal ) { if ( child != ( pid_t ) - 1 ) { <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5104\n\n```\nCWE-284 int socket_create ( uint16_t port ) { int sfd = - 1 ; int yes = 1 ; # ifdef WIN32 WSADATA wsa_data ; if ( ! wsa_init ) { if ( WSAStartup ( MAKEWORD ( 2 , 2 ) , & wsa_data ) != ERROR_SUCCESS ) { fprintf ( stderr , \"WSAStartup<S2SV_blank>failed!\\\\n\" ) ; ExitProcess ( - 1 ) ; } wsa_init = 1 ; } # endif struct sockaddr_in saddr ; if ( 0 > ( sfd = socket ( PF_INET , SOCK_STREAM , IPPROTO_TCP ) ) ) { perror ( \"socket()\" ) ; return - 1 ; } if ( setsockopt ( sfd , SOL_SOCKET , SO_REUSEADDR , ( void * ) & yes , sizeof ( int ) ) == - 1 ) { perror ( \"setsockopt()\" ) ; socket_close ( sfd ) ; return - 1 ; } # ifdef SO_NOSIGPIPE if ( setsockopt ( sfd , SOL_SOCKET , SO_NOSIGPIPE , ( void * ) & yes , sizeof ( int ) ) == - 1 ) { perror ( \"setsockopt()\" ) ; socket_close ( sfd ) ; return - 1 ; } # endif memset ( ( void * ) & saddr , 0 , sizeof ( saddr ) ) ; saddr . sin_family = AF_INET ; <S2SV_StartBug> saddr . sin_addr . s_addr = htonl ( INADDR_ANY ) ; <S2SV_EndBug> saddr . sin_port = htons ( port ) ; if ( 0 > bind ( sfd , ( struct sockaddr * ) & saddr , sizeof ( saddr ) ) ) { perror ( \"bind()\" ) ; socket_close ( sfd ) ; return - 1 ; } if ( listen ( sfd , 1 ) == - 1 ) { perror ( \"listen()\" ) ; socket_close ( sfd ) ; return - 1 ; } return sfd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = htonl ( INADDR_LOOPBACK <S2SV_ModEnd> ) ; saddr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1819\n\n```\nCWE-20 xfs_buf_t * _xfs_buf_find ( struct xfs_buftarg * btp , struct xfs_buf_map * map , int nmaps , xfs_buf_flags_t flags , xfs_buf_t * new_bp ) { size_t numbytes ; struct xfs_perag * pag ; struct rb_node * * rbp ; struct rb_node * parent ; xfs_buf_t * bp ; <S2SV_StartBug> xfs_daddr_t blkno = map [ 0 ] . bm_bn ; <S2SV_EndBug> int numblks = 0 ; int i ; for ( i = 0 ; i < nmaps ; i ++ ) numblks += map [ i ] . bm_len ; numbytes = BBTOB ( numblks ) ; ASSERT ( ! ( numbytes < ( 1 << btp -> bt_sshift ) ) ) ; ASSERT ( ! ( BBTOB ( blkno ) & ( xfs_off_t ) btp -> bt_smask ) ) ; <S2SV_StartBug> pag = xfs_perag_get ( btp -> bt_mount , <S2SV_EndBug> xfs_daddr_to_agno ( btp -> bt_mount , blkno ) ) ; spin_lock ( & pag -> pag_buf_lock ) ; rbp = & pag -> pag_buf_tree . rb_node ; parent = NULL ; bp = NULL ; while ( * rbp ) { parent = * rbp ; bp = rb_entry ( parent , struct xfs_buf , b_rbnode ) ; if ( blkno < bp -> b_bn ) rbp = & ( * rbp ) -> rb_left ; else if ( blkno > bp -> b_bn ) rbp = & ( * rbp ) -> rb_right ; else { if ( bp -> b_length != numblks ) { ASSERT ( bp -> b_flags & XBF_STALE ) ; rbp = & ( * rbp ) -> rb_right ; continue ; } atomic_inc ( & bp -> b_hold ) ; goto found ; } } if ( new_bp ) { rb_link_node ( & new_bp -> b_rbnode , parent , rbp ) ; rb_insert_color ( & new_bp -> b_rbnode , & pag -> pag_buf_tree ) ; new_bp -> b_pag = pag ; spin_unlock ( & pag -> pag_buf_lock ) ; } else { XFS_STATS_INC ( xb_miss_locked ) ; spin_unlock ( & pag -> pag_buf_lock ) ; xfs_perag_put ( pag ) ; } return new_bp ; found : spin_unlock ( & pag -> pag_buf_lock ) ; xfs_perag_put ( pag ) ; if ( ! xfs_buf_trylock ( bp ) ) { if ( flags & XBF_TRYLOCK ) { xfs_buf_rele ( bp ) ; XFS_STATS_INC ( xb_busy_locked ) ; return NULL ; } xfs_buf_lock ( bp ) ; XFS_STATS_INC ( xb_get_locked_waited ) ; } if ( bp -> b_flags & XBF_STALE ) { ASSERT ( ( bp -> b_flags & _XBF_DELWRI_Q ) == 0 ) ; ASSERT ( bp -> b_iodone == NULL ) ; bp -> b_flags &= _XBF_KMEM | _XBF_PAGES ; bp -> b_ops = NULL ; } trace_xfs_buf_find ( bp , flags , _RET_IP_ ) ; XFS_STATS_INC ( xb_get_locked ) ; return bp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] . bm_bn ; xfs_daddr_t eofs <S2SV_ModStart> ) ) ; eofs = XFS_FSB_TO_BB ( btp -> bt_mount , btp -> bt_mount -> m_sb . sb_dblocks ) ; if ( blkno >= eofs ) { xfs_alert ( btp -> bt_mount , \"%s:<S2SV_blank>Block<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range:<S2SV_blank>block<S2SV_blank>0x%llx,<S2SV_blank>EOFS<S2SV_blank>0x%llx<S2SV_blank>\" , __func__ , blkno , eofs ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int DSA_verify ( int type , const unsigned char * dgst , int dgst_len , const unsigned char * sigbuf , int siglen , DSA * dsa ) { DSA_SIG * s ; <S2SV_StartBug> int ret = - 1 ; <S2SV_EndBug> s = DSA_SIG_new ( ) ; if ( s == NULL ) return ( ret ) ; <S2SV_StartBug> if ( d2i_DSA_SIG ( & s , & sigbuf , siglen ) == NULL ) goto err ; <S2SV_EndBug> ret = DSA_do_verify ( dgst , dgst_len , s , dsa ) ; err : <S2SV_StartBug> DSA_SIG_free ( s ) ; <S2SV_EndBug> return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * s ; const unsigned char * p = sigbuf ; unsigned char * der = NULL ; int derlen = - 1 ; <S2SV_ModStart> s , & p <S2SV_ModEnd> , siglen ) <S2SV_ModStart> == NULL ) goto err ; derlen = i2d_DSA_SIG ( s , & der ) ; if ( derlen != siglen || memcmp ( sigbuf , der , derlen ) ) <S2SV_ModStart> ; err : if ( derlen > 0 ) { OPENSSL_cleanse ( der , derlen ) ; OPENSSL_free ( der ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 int sas_ex_revalidate_domain ( struct domain_device * port_dev ) { int res ; struct domain_device * dev = NULL ; res = sas_find_bcast_dev ( port_dev , & dev ) ; <S2SV_StartBug> while ( res == 0 && dev ) { <S2SV_EndBug> struct expander_device * ex = & dev -> ex_dev ; int i = 0 , phy_id ; do { phy_id = - 1 ; res = sas_find_bcast_phy ( dev , & phy_id , i , true ) ; if ( phy_id == - 1 ) break ; res = sas_rediscover ( dev , phy_id ) ; i = phy_id + 1 ; } while ( i < ex -> num_phys ) ; <S2SV_StartBug> dev = NULL ; <S2SV_EndBug> res = sas_find_bcast_dev ( port_dev , & dev ) ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) ; if <S2SV_ModEnd> ( res == <S2SV_ModStart> num_phys ) ; <S2SV_ModEnd> } return res\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2117\n\n```\nCWE-200 static int atl2_probe ( struct pci_dev * pdev , const struct pci_device_id * ent ) { struct net_device * netdev ; struct atl2_adapter * adapter ; static int cards_found ; unsigned long mmio_start ; int mmio_len ; int err ; cards_found = 0 ; err = pci_enable_device ( pdev ) ; if ( err ) return err ; if ( pci_set_dma_mask ( pdev , DMA_BIT_MASK ( 32 ) ) && pci_set_consistent_dma_mask ( pdev , DMA_BIT_MASK ( 32 ) ) ) { printk ( KERN_ERR \"atl2:<S2SV_blank>No<S2SV_blank>usable<S2SV_blank>DMA<S2SV_blank>configuration,<S2SV_blank>aborting\\\\n\" ) ; goto err_dma ; } err = pci_request_regions ( pdev , atl2_driver_name ) ; if ( err ) goto err_pci_reg ; pci_set_master ( pdev ) ; err = - ENOMEM ; netdev = alloc_etherdev ( sizeof ( struct atl2_adapter ) ) ; if ( ! netdev ) goto err_alloc_etherdev ; SET_NETDEV_DEV ( netdev , & pdev -> dev ) ; pci_set_drvdata ( pdev , netdev ) ; adapter = netdev_priv ( netdev ) ; adapter -> netdev = netdev ; adapter -> pdev = pdev ; adapter -> hw . back = adapter ; mmio_start = pci_resource_start ( pdev , 0x0 ) ; mmio_len = pci_resource_len ( pdev , 0x0 ) ; adapter -> hw . mem_rang = ( u32 ) mmio_len ; adapter -> hw . hw_addr = ioremap ( mmio_start , mmio_len ) ; if ( ! adapter -> hw . hw_addr ) { err = - EIO ; goto err_ioremap ; } atl2_setup_pcicmd ( pdev ) ; netdev -> netdev_ops = & atl2_netdev_ops ; netdev -> ethtool_ops = & atl2_ethtool_ops ; netdev -> watchdog_timeo = 5 * HZ ; strncpy ( netdev -> name , pci_name ( pdev ) , sizeof ( netdev -> name ) - 1 ) ; netdev -> mem_start = mmio_start ; netdev -> mem_end = mmio_start + mmio_len ; adapter -> bd_number = cards_found ; adapter -> pci_using_64 = false ; err = atl2_sw_init ( adapter ) ; if ( err ) goto err_sw_init ; err = - EIO ; <S2SV_StartBug> netdev -> hw_features = NETIF_F_SG | NETIF_F_HW_VLAN_CTAG_RX ; <S2SV_EndBug> netdev -> features |= ( NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX ) ; atl2_phy_init ( & adapter -> hw ) ; if ( atl2_reset_hw ( & adapter -> hw ) ) { err = - EIO ; goto err_reset ; } atl2_read_mac_addr ( & adapter -> hw ) ; memcpy ( netdev -> dev_addr , adapter -> hw . mac_addr , netdev -> addr_len ) ; if ( ! is_valid_ether_addr ( netdev -> dev_addr ) ) { err = - EIO ; goto err_eeprom ; } atl2_check_options ( adapter ) ; setup_timer ( & adapter -> watchdog_timer , atl2_watchdog , ( unsigned long ) adapter ) ; setup_timer ( & adapter -> phy_config_timer , atl2_phy_config , ( unsigned long ) adapter ) ; INIT_WORK ( & adapter -> reset_task , atl2_reset_task ) ; INIT_WORK ( & adapter -> link_chg_task , atl2_link_chg_task ) ; strcpy ( netdev -> name , \"eth%d\" ) ; err = register_netdev ( netdev ) ; if ( err ) goto err_register ; netif_carrier_off ( netdev ) ; netif_stop_queue ( netdev ) ; cards_found ++ ; return 0 ; err_reset : err_register : err_sw_init : err_eeprom : iounmap ( adapter -> hw . hw_addr ) ; err_ioremap : free_netdev ( netdev ) ; err_alloc_etherdev : pci_release_regions ( pdev ) ; err_pci_reg : err_dma : pci_disable_device ( pdev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> hw_features = <S2SV_ModEnd> NETIF_F_HW_VLAN_CTAG_RX ; netdev\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16534\n\n```\nCWE-119 int cdc_parse_cdc_header ( struct usb_cdc_parsed_header * hdr , struct usb_interface * intf , u8 * buffer , int buflen ) { struct usb_cdc_union_desc * union_header = NULL ; struct usb_cdc_header_desc * header = NULL ; struct usb_cdc_ether_desc * ether = NULL ; struct usb_cdc_mdlm_detail_desc * detail = NULL ; struct usb_cdc_mdlm_desc * desc = NULL ; unsigned int elength ; int cnt = 0 ; memset ( hdr , 0x00 , sizeof ( struct usb_cdc_parsed_header ) ) ; hdr -> phonet_magic_present = false ; while ( buflen > 0 ) { elength = buffer [ 0 ] ; if ( ! elength ) { dev_err ( & intf -> dev , \"skipping<S2SV_blank>garbage<S2SV_blank>byte\\\\n\" ) ; elength = 1 ; <S2SV_StartBug> goto next_desc ; <S2SV_EndBug> } if ( buffer [ 1 ] != USB_DT_CS_INTERFACE ) { dev_err ( & intf -> dev , \"skipping<S2SV_blank>garbage\\\\n\" ) ; goto next_desc ; } switch ( buffer [ 2 ] ) { case USB_CDC_UNION_TYPE : if ( elength < sizeof ( struct usb_cdc_union_desc ) ) goto next_desc ; if ( union_header ) { dev_err ( & intf -> dev , \"More<S2SV_blank>than<S2SV_blank>one<S2SV_blank>union<S2SV_blank>descriptor,<S2SV_blank>skipping<S2SV_blank>...\\\\n\" ) ; goto next_desc ; } union_header = ( struct usb_cdc_union_desc * ) buffer ; break ; case USB_CDC_COUNTRY_TYPE : if ( elength < sizeof ( struct usb_cdc_country_functional_desc ) ) goto next_desc ; hdr -> usb_cdc_country_functional_desc = ( struct usb_cdc_country_functional_desc * ) buffer ; break ; case USB_CDC_HEADER_TYPE : if ( elength != sizeof ( struct usb_cdc_header_desc ) ) goto next_desc ; if ( header ) return - EINVAL ; header = ( struct usb_cdc_header_desc * ) buffer ; break ; case USB_CDC_ACM_TYPE : if ( elength < sizeof ( struct usb_cdc_acm_descriptor ) ) goto next_desc ; hdr -> usb_cdc_acm_descriptor = ( struct usb_cdc_acm_descriptor * ) buffer ; break ; case USB_CDC_ETHERNET_TYPE : if ( elength != sizeof ( struct usb_cdc_ether_desc ) ) goto next_desc ; if ( ether ) return - EINVAL ; ether = ( struct usb_cdc_ether_desc * ) buffer ; break ; case USB_CDC_CALL_MANAGEMENT_TYPE : if ( elength < sizeof ( struct usb_cdc_call_mgmt_descriptor ) ) goto next_desc ; hdr -> usb_cdc_call_mgmt_descriptor = ( struct usb_cdc_call_mgmt_descriptor * ) buffer ; break ; case USB_CDC_DMM_TYPE : if ( elength < sizeof ( struct usb_cdc_dmm_desc ) ) goto next_desc ; hdr -> usb_cdc_dmm_desc = ( struct usb_cdc_dmm_desc * ) buffer ; break ; case USB_CDC_MDLM_TYPE : if ( elength < sizeof ( struct usb_cdc_mdlm_desc * ) ) goto next_desc ; if ( desc ) return - EINVAL ; desc = ( struct usb_cdc_mdlm_desc * ) buffer ; break ; case USB_CDC_MDLM_DETAIL_TYPE : if ( elength < sizeof ( struct usb_cdc_mdlm_detail_desc * ) ) goto next_desc ; if ( detail ) return - EINVAL ; detail = ( struct usb_cdc_mdlm_detail_desc * ) buffer ; break ; case USB_CDC_NCM_TYPE : if ( elength < sizeof ( struct usb_cdc_ncm_desc ) ) goto next_desc ; hdr -> usb_cdc_ncm_desc = ( struct usb_cdc_ncm_desc * ) buffer ; break ; case USB_CDC_MBIM_TYPE : if ( elength < sizeof ( struct usb_cdc_mbim_desc ) ) goto next_desc ; hdr -> usb_cdc_mbim_desc = ( struct usb_cdc_mbim_desc * ) buffer ; break ; case USB_CDC_MBIM_EXTENDED_TYPE : if ( elength < sizeof ( struct usb_cdc_mbim_extended_desc ) ) break ; hdr -> usb_cdc_mbim_extended_desc = ( struct usb_cdc_mbim_extended_desc * ) buffer ; break ; case CDC_PHONET_MAGIC_NUMBER : hdr -> phonet_magic_present = true ; break ; default : dev_dbg ( & intf -> dev , \"Ignoring<S2SV_blank>descriptor:<S2SV_blank>type<S2SV_blank>%02x,<S2SV_blank>length<S2SV_blank>%ud\\\\n\" , buffer [ 2 ] , elength ) ; goto next_desc ; } cnt ++ ; next_desc : buflen -= elength ; buffer += elength ; } hdr -> usb_cdc_union_desc = union_header ; hdr -> usb_cdc_header_desc = header ; hdr -> usb_cdc_mdlm_detail_desc = detail ; hdr -> usb_cdc_mdlm_desc = desc ; hdr -> usb_cdc_ether_desc = ether ; return cnt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; goto next_desc ; } if ( ( buflen < elength ) || ( elength < 3 ) ) { dev_err ( & intf -> dev , \"invalid<S2SV_blank>descriptor<S2SV_blank>buffer<S2SV_blank>length\\\\n\" ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 static gchar * read_file ( gchar * filepath ) { FILE * f ; size_t length ; gchar * ret = NULL ; <S2SV_StartBug> f = fopen ( filepath , \"rb\" ) ; <S2SV_EndBug> if ( f ) { fseek ( f , 0 , SEEK_END ) ; length = ( size_t ) ftell ( f ) ; fseek ( f , 0 , SEEK_SET ) ; ret = MALLOC ( length + 1 ) ; if ( ret ) { if ( fread ( ret , length , 1 , f ) != 1 ) { log_message ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>all<S2SV_blank>of<S2SV_blank>%s\" , filepath ) ; } ret [ length ] = '\\\\0' ; } else log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>Dbus<S2SV_blank>file<S2SV_blank>%s\" , filepath ) ; fclose ( f ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( filepath , \"r\" <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 int ext4_ext_insert_extent ( handle_t * handle , struct inode * inode , struct ext4_ext_path * path , struct ext4_extent * newext , int flag ) { struct ext4_extent_header * eh ; struct ext4_extent * ex , * fex ; struct ext4_extent * nearex ; struct ext4_ext_path * npath = NULL ; int depth , len , err ; ext4_lblk_t next ; unsigned uninitialized = 0 ; BUG_ON ( ext4_ext_get_actual_len ( newext ) == 0 ) ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; BUG_ON ( path [ depth ] . p_hdr == NULL ) ; <S2SV_StartBug> if ( ex && ( flag != EXT4_GET_BLOCKS_PRE_IO ) <S2SV_EndBug> && ext4_can_extents_be_merged ( inode , ex , newext ) ) { ext_debug ( \"append<S2SV_blank>[%d]%d<S2SV_blank>block<S2SV_blank>to<S2SV_blank>%d:[%d]%d<S2SV_blank>(from<S2SV_blank>%llu)\\\\n\" , ext4_ext_is_uninitialized ( newext ) , ext4_ext_get_actual_len ( newext ) , le32_to_cpu ( ex -> ee_block ) , ext4_ext_is_uninitialized ( ex ) , ext4_ext_get_actual_len ( ex ) , ext_pblock ( ex ) ) ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) return err ; if ( ext4_ext_is_uninitialized ( ex ) ) uninitialized = 1 ; ex -> ee_len = cpu_to_le16 ( ext4_ext_get_actual_len ( ex ) + ext4_ext_get_actual_len ( newext ) ) ; if ( uninitialized ) ext4_ext_mark_uninitialized ( ex ) ; eh = path [ depth ] . p_hdr ; nearex = ex ; goto merge ; } repeat : depth = ext_depth ( inode ) ; eh = path [ depth ] . p_hdr ; if ( le16_to_cpu ( eh -> eh_entries ) < le16_to_cpu ( eh -> eh_max ) ) goto has_space ; fex = EXT_LAST_EXTENT ( eh ) ; next = ext4_ext_next_leaf_block ( inode , path ) ; if ( le32_to_cpu ( newext -> ee_block ) > le32_to_cpu ( fex -> ee_block ) && next != EXT_MAX_BLOCK ) { ext_debug ( \"next<S2SV_blank>leaf<S2SV_blank>block<S2SV_blank>-<S2SV_blank>%d\\\\n\" , next ) ; BUG_ON ( npath != NULL ) ; npath = ext4_ext_find_extent ( inode , next , NULL ) ; if ( IS_ERR ( npath ) ) return PTR_ERR ( npath ) ; BUG_ON ( npath -> p_depth != path -> p_depth ) ; eh = npath [ depth ] . p_hdr ; if ( le16_to_cpu ( eh -> eh_entries ) < le16_to_cpu ( eh -> eh_max ) ) { ext_debug ( \"next<S2SV_blank>leaf<S2SV_blank>isnt<S2SV_blank>full(%d)\\\\n\" , le16_to_cpu ( eh -> eh_entries ) ) ; path = npath ; goto repeat ; } ext_debug ( \"next<S2SV_blank>leaf<S2SV_blank>has<S2SV_blank>no<S2SV_blank>free<S2SV_blank>space(%d,%d)\\\\n\" , le16_to_cpu ( eh -> eh_entries ) , le16_to_cpu ( eh -> eh_max ) ) ; } err = ext4_ext_create_new_leaf ( handle , inode , path , newext ) ; if ( err ) goto cleanup ; depth = ext_depth ( inode ) ; eh = path [ depth ] . p_hdr ; has_space : nearex = path [ depth ] . p_ext ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto cleanup ; if ( ! nearex ) { ext_debug ( \"first<S2SV_blank>extent<S2SV_blank>in<S2SV_blank>the<S2SV_blank>leaf:<S2SV_blank>%d:%llu:[%d]%d\\\\n\" , le32_to_cpu ( newext -> ee_block ) , ext_pblock ( newext ) , ext4_ext_is_uninitialized ( newext ) , ext4_ext_get_actual_len ( newext ) ) ; path [ depth ] . p_ext = EXT_FIRST_EXTENT ( eh ) ; } else if ( le32_to_cpu ( newext -> ee_block ) > le32_to_cpu ( nearex -> ee_block ) ) { if ( nearex != EXT_LAST_EXTENT ( eh ) ) { len = EXT_MAX_EXTENT ( eh ) - nearex ; len = ( len - 1 ) * sizeof ( struct ext4_extent ) ; len = len < 0 ? 0 : len ; ext_debug ( \"insert<S2SV_blank>%d:%llu:[%d]%d<S2SV_blank>after:<S2SV_blank>nearest<S2SV_blank>0x%p,<S2SV_blank>\" \"move<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>0x%p<S2SV_blank>to<S2SV_blank>0x%p\\\\n\" , le32_to_cpu ( newext -> ee_block ) , ext_pblock ( newext ) , ext4_ext_is_uninitialized ( newext ) , ext4_ext_get_actual_len ( newext ) , nearex , len , nearex + 1 , nearex + 2 ) ; memmove ( nearex + 2 , nearex + 1 , len ) ; } path [ depth ] . p_ext = nearex + 1 ; } else { BUG_ON ( newext -> ee_block == nearex -> ee_block ) ; len = ( EXT_MAX_EXTENT ( eh ) - nearex ) * sizeof ( struct ext4_extent ) ; len = len < 0 ? 0 : len ; ext_debug ( \"insert<S2SV_blank>%d:%llu:[%d]%d<S2SV_blank>before:<S2SV_blank>nearest<S2SV_blank>0x%p,<S2SV_blank>\" \"move<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>0x%p<S2SV_blank>to<S2SV_blank>0x%p\\\\n\" , le32_to_cpu ( newext -> ee_block ) , ext_pblock ( newext ) , ext4_ext_is_uninitialized ( newext ) , ext4_ext_get_actual_len ( newext ) , nearex , len , nearex + 1 , nearex + 2 ) ; memmove ( nearex + 1 , nearex , len ) ; path [ depth ] . p_ext = nearex ; } le16_add_cpu ( & eh -> eh_entries , 1 ) ; nearex = path [ depth ] . p_ext ; nearex -> ee_block = newext -> ee_block ; ext4_ext_store_pblock ( nearex , ext_pblock ( newext ) ) ; nearex -> ee_len = newext -> ee_len ; merge : <S2SV_StartBug> if ( flag != EXT4_GET_BLOCKS_PRE_IO ) <S2SV_EndBug> ext4_ext_try_to_merge ( inode , path , nearex ) ; err = ext4_ext_correct_indexes ( handle , inode , path ) ; if ( err ) goto cleanup ; err = ext4_ext_dirty ( handle , inode , path + depth ) ; cleanup : if ( npath ) { ext4_ext_drop_refs ( npath ) ; kfree ( npath ) ; } ext4_ext_invalidate_cache ( inode ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ex && ! ( flag & <S2SV_ModEnd> EXT4_GET_BLOCKS_PRE_IO ) && <S2SV_ModStart> : if ( ! ( flag & EXT4_GET_BLOCKS_PRE_IO ) <S2SV_ModEnd> ) ext4_ext_try_to_merge (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int rose_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; <S2SV_StartBug> struct rose_sock * rose = rose_sk ( sk ) ; <S2SV_EndBug> struct sockaddr_rose * srose = ( struct sockaddr_rose * ) msg -> msg_name ; size_t copied ; unsigned char * asmptr ; struct sk_buff * skb ; int n , er , qbit ; if ( sk -> sk_state != TCP_ESTABLISHED ) return - ENOTCONN ; if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) return er ; qbit = ( skb -> data [ 0 ] & ROSE_Q_BIT ) == ROSE_Q_BIT ; skb_pull ( skb , ROSE_MIN_LEN ) ; if ( rose -> qbitincl ) { asmptr = skb_push ( skb , 1 ) ; * asmptr = qbit ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; <S2SV_StartBug> if ( srose != NULL ) { <S2SV_EndBug> <S2SV_StartBug> memset ( srose , 0 , msg -> msg_namelen ) ; <S2SV_EndBug> srose -> srose_family = AF_ROSE ; srose -> srose_addr = rose -> dest_addr ; srose -> srose_call = rose -> dest_call ; srose -> srose_ndigis = rose -> dest_ndigis ; if ( msg -> msg_namelen >= sizeof ( struct full_sockaddr_rose ) ) { struct full_sockaddr_rose * full_srose = ( struct full_sockaddr_rose * ) msg -> msg_name ; for ( n = 0 ; n < rose -> dest_ndigis ; n ++ ) full_srose -> srose_digis [ n ] = rose -> dest_digis [ n ] ; msg -> msg_namelen = sizeof ( struct full_sockaddr_rose ) ; } else { if ( rose -> dest_ndigis >= 1 ) { srose -> srose_ndigis = 1 ; srose -> srose_digi = rose -> dest_digis [ 0 ] ; } msg -> msg_namelen = sizeof ( struct sockaddr_rose ) ; } } skb_free_datagram ( sk , skb ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) <S2SV_ModEnd> ; size_t copied <S2SV_ModStart> ; if ( msg -> msg_name ) { struct sockaddr_rose * srose ; memset ( msg -> msg_name <S2SV_ModEnd> , 0 , <S2SV_ModStart> , 0 , sizeof ( struct full_sockaddr_rose ) ) ; srose = msg -> msg_name <S2SV_ModEnd> ; srose ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4036\n\n```\nCWE-119 static void vhost_scsi_send_evt ( struct vhost_scsi * vs , struct vhost_scsi_tpg * tpg , struct se_lun * lun , u32 event , u32 reason ) { struct vhost_scsi_evt * evt ; evt = vhost_scsi_allocate_evt ( vs , event , reason ) ; if ( ! evt ) return ; if ( tpg && lun ) { evt -> event . lun [ 0 ] = 0x01 ; <S2SV_StartBug> evt -> event . lun [ 1 ] = tpg -> tport_tpgt & 0xFF ; <S2SV_EndBug> if ( lun -> unpacked_lun >= 256 ) evt -> event . lun [ 2 ] = lun -> unpacked_lun >> 8 | 0x40 ; evt -> event . lun [ 3 ] = lun -> unpacked_lun & 0xFF ; } llist_add ( & evt -> list , & vs -> vs_event_list ) ; vhost_work_queue ( & vs -> dev , & vs -> vs_event_work ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tpg -> tport_tpgt <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9710\n\n```\nCWE-362 static int do_setxattr ( struct btrfs_trans_handle * trans , struct inode * inode , const char * name , const void * value , size_t size , int flags ) { <S2SV_StartBug> struct btrfs_dir_item * di ; <S2SV_EndBug> struct btrfs_root * root = BTRFS_I ( inode ) -> root ; struct btrfs_path * path ; size_t name_len = strlen ( name ) ; int ret = 0 ; if ( name_len + size > BTRFS_MAX_XATTR_SIZE ( root ) ) return - ENOSPC ; path = btrfs_alloc_path ( ) ; if ( ! path ) return - ENOMEM ; <S2SV_StartBug> if ( flags & XATTR_REPLACE ) { <S2SV_EndBug> <S2SV_StartBug> di = btrfs_lookup_xattr ( trans , root , path , btrfs_ino ( inode ) , name , <S2SV_EndBug> name_len , - 1 ) ; if ( IS_ERR ( di ) ) { ret = PTR_ERR ( di ) ; goto out ; <S2SV_StartBug> } else if ( ! di ) { <S2SV_EndBug> ret = - ENODATA ; goto out ; } <S2SV_StartBug> ret = btrfs_delete_one_dir_name ( trans , root , path , di ) ; <S2SV_EndBug> if ( ret ) goto out ; <S2SV_StartBug> btrfs_release_path ( path ) ; <S2SV_EndBug> if ( ! value ) goto out ; <S2SV_StartBug> } else { <S2SV_EndBug> di = btrfs_lookup_xattr ( NULL , root , path , btrfs_ino ( inode ) , name , name_len , 0 ) ; if ( IS_ERR ( di ) ) { ret = PTR_ERR ( di ) ; goto out ; } if ( ! di && ! value ) goto out ; btrfs_release_path ( path ) ; } again : ret = btrfs_insert_xattr_item ( trans , root , path , btrfs_ino ( inode ) , name , name_len , value , size ) ; if ( ret == - EOVERFLOW ) ret = - EEXIST ; if ( ret == - EEXIST ) { <S2SV_StartBug> if ( flags & XATTR_CREATE ) <S2SV_EndBug> goto out ; <S2SV_StartBug> btrfs_release_path ( path ) ; <S2SV_EndBug> di = btrfs_lookup_xattr ( trans , root , path , btrfs_ino ( inode ) , name , name_len , - 1 ) ; if ( IS_ERR ( di ) ) { ret = PTR_ERR ( di ) ; goto out ; <S2SV_StartBug> } else if ( ! di ) { <S2SV_EndBug> btrfs_release_path ( path ) ; goto again ; } ret = btrfs_delete_one_dir_name ( trans , root , path , di ) ; if ( ret ) goto out ; <S2SV_StartBug> if ( value ) { <S2SV_EndBug> btrfs_release_path ( path ) ; goto again ; } } out : btrfs_free_path ( path ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> btrfs_dir_item * di = NULL <S2SV_ModStart> - ENOMEM ; path -> skip_release_on_error = 1 ; if ( ! value ) { di = btrfs_lookup_xattr ( trans , root , path , btrfs_ino ( inode ) , name , name_len , - 1 ) ; if ( ! di && <S2SV_ModEnd> ( flags & <S2SV_ModStart> & XATTR_REPLACE ) ) ret = - ENODATA ; else if ( di ) ret = btrfs_delete_one_dir_name <S2SV_ModEnd> ( trans , <S2SV_ModStart> , path , <S2SV_ModEnd> di ) ; <S2SV_ModStart> out ; } if ( flags & XATTR_REPLACE ) { ASSERT ( mutex_is_locked ( & inode -> i_mutex ) ) ; di = btrfs_lookup_xattr ( NULL , root , path , btrfs_ino ( inode ) , name , name_len , 0 ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> out ; } btrfs_release_path ( path ) ; di = NULL ; } ret = btrfs_insert_xattr_item <S2SV_ModEnd> ( trans , <S2SV_ModStart> , path , btrfs_ino ( inode ) , name , name_len , value , size ) ; if ( ret == - EOVERFLOW ) { ret = 0 ; btrfs_assert_tree_locked ( path -> nodes [ 0 ] ) ; di = btrfs_match_dir_item_name ( root , path , name , name_len ) ; if ( ! di && ! ( flags & XATTR_REPLACE ) ) { ret = - ENOSPC ; <S2SV_ModEnd> goto out ; <S2SV_ModStart> goto out ; } } else if ( ret == - EEXIST ) { ret = 0 ; di = btrfs_match_dir_item_name ( root , path , name , name_len ) ; ASSERT ( di ) ; } else if ( ret ) { <S2SV_ModEnd> goto out ; <S2SV_ModStart> out ; } if ( di && <S2SV_ModEnd> ( flags & <S2SV_ModStart> & XATTR_CREATE ) ) { ret = - EEXIST ; <S2SV_ModStart> goto out ; } if ( di ) { const int slot = path -> slots [ 0 ] ; struct extent_buffer * leaf = path -> nodes [ 0 ] ; const u16 old_data_len = btrfs_dir_data_len ( leaf , di ) ; const u32 item_size = btrfs_item_size_nr ( leaf , slot ) ; const u32 data_size = sizeof ( * di ) + name_len + size ; struct btrfs_item * item ; unsigned long data_ptr ; char * ptr ; if ( size > old_data_len ) { if ( btrfs_leaf_free_space ( root , leaf ) < ( size - old_data_len ) ) { ret = - ENOSPC <S2SV_ModEnd> ; goto out <S2SV_ModStart> out ; } } if ( old_data_len + name_len + sizeof ( * di ) == item_size ) { if ( size > old_data_len ) btrfs_extend_item ( root , path , size - old_data_len ) ; <S2SV_ModStart> else if ( size < old_data_len ) btrfs_truncate_item ( root , path , data_size , 1 ) ; } else { <S2SV_ModEnd> ret = btrfs_delete_one_dir_name <S2SV_ModStart> goto out ; btrfs_extend_item ( root , path , data_size ) ; } item = btrfs_item_nr ( slot ) ; ptr = btrfs_item_ptr ( leaf , slot , char ) ; ptr += btrfs_item_size ( leaf , item ) - data_size ; di = ( struct btrfs_dir_item * ) ptr ; btrfs_set_dir_data_len ( leaf , di , size ) ; data_ptr = ( ( unsigned long ) ( di + 1 ) ) + name_len ; write_extent_buffer ( leaf , value , data_ptr , size ) ; btrfs_mark_buffer_dirty ( leaf ) ; } else { <S2SV_ModEnd> } out :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9442\n\n```\nCWE-119 void Strgrow ( Str x ) { char * old = x -> ptr ; int newlen ; <S2SV_StartBug> newlen = x -> length * 6 / 5 ; <S2SV_EndBug> <S2SV_StartBug> if ( newlen == x -> length ) <S2SV_EndBug> newlen += 2 ; x -> ptr = GC_MALLOC_ATOMIC ( newlen ) ; x -> area_size = newlen ; bcopy ( ( void * ) old , ( void * ) x -> ptr , x -> length ) ; GC_free ( old ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = x -> area_size <S2SV_ModEnd> * 6 / <S2SV_ModStart> == x -> area_size <S2SV_ModEnd> ) newlen +=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3237\n\n```\nCWE-200 static int vsock_stream_recvmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk ; struct vsock_sock * vsk ; int err ; size_t target ; ssize_t copied ; long timeout ; struct vsock_transport_recv_notify_data recv_data ; DEFINE_WAIT ( wait ) ; sk = sock -> sk ; vsk = vsock_sk ( sk ) ; err = 0 ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> if ( sk -> sk_state != SS_CONNECTED ) { if ( sock_flag ( sk , SOCK_DONE ) ) err = 0 ; else err = - ENOTCONN ; goto out ; } if ( flags & MSG_OOB ) { err = - EOPNOTSUPP ; goto out ; } if ( sk -> sk_shutdown & RCV_SHUTDOWN ) { err = 0 ; goto out ; } if ( ! len ) { err = 0 ; goto out ; } target = sock_rcvlowat ( sk , flags & MSG_WAITALL , len ) ; if ( target >= transport -> stream_rcvhiwat ( vsk ) ) { err = - ENOMEM ; goto out ; } timeout = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; copied = 0 ; err = transport -> notify_recv_init ( vsk , target , & recv_data ) ; if ( err < 0 ) goto out ; prepare_to_wait ( sk_sleep ( sk ) , & wait , TASK_INTERRUPTIBLE ) ; while ( 1 ) { s64 ready = vsock_stream_has_data ( vsk ) ; if ( ready < 0 ) { err = - ENOMEM ; goto out_wait ; } else if ( ready > 0 ) { ssize_t read ; err = transport -> notify_recv_pre_dequeue ( vsk , target , & recv_data ) ; if ( err < 0 ) break ; read = transport -> stream_dequeue ( vsk , msg -> msg_iov , len - copied , flags ) ; if ( read < 0 ) { err = - ENOMEM ; break ; } copied += read ; err = transport -> notify_recv_post_dequeue ( vsk , target , read , ! ( flags & MSG_PEEK ) , & recv_data ) ; if ( err < 0 ) goto out_wait ; if ( read >= target || flags & MSG_PEEK ) break ; target -= read ; } else { if ( sk -> sk_err != 0 || ( sk -> sk_shutdown & RCV_SHUTDOWN ) || ( vsk -> peer_shutdown & SEND_SHUTDOWN ) ) { break ; } if ( timeout == 0 ) { err = - EAGAIN ; break ; } err = transport -> notify_recv_pre_block ( vsk , target , & recv_data ) ; if ( err < 0 ) break ; release_sock ( sk ) ; timeout = schedule_timeout ( timeout ) ; lock_sock ( sk ) ; if ( signal_pending ( current ) ) { err = sock_intr_errno ( timeout ) ; break ; } else if ( timeout == 0 ) { err = - EAGAIN ; break ; } prepare_to_wait ( sk_sleep ( sk ) , & wait , TASK_INTERRUPTIBLE ) ; } } if ( sk -> sk_err ) err = - sk -> sk_err ; else if ( sk -> sk_shutdown & RCV_SHUTDOWN ) err = 0 ; if ( copied > 0 ) { if ( ! ( flags & MSG_PEEK ) ) { if ( vsk -> peer_shutdown & SEND_SHUTDOWN ) { if ( vsock_stream_has_data ( vsk ) <= 0 ) { sk -> sk_state = SS_UNCONNECTED ; sock_set_flag ( sk , SOCK_DONE ) ; sk -> sk_state_change ( sk ) ; } } } err = copied ; } out_wait : finish_wait ( sk_sleep ( sk ) , & wait ) ; out : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; msg -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2174\n\n```\nCWE-119 CURLcode Curl_urldecode ( struct SessionHandle * data , const char * string , size_t length , char * * ostring , size_t * olen , bool reject_ctrl ) { size_t alloc = ( length ? length : strlen ( string ) ) + 1 ; char * ns = malloc ( alloc ) ; unsigned char in ; size_t strindex = 0 ; unsigned long hex ; CURLcode res ; if ( ! ns ) return CURLE_OUT_OF_MEMORY ; while ( -- alloc > 0 ) { in = * string ; <S2SV_StartBug> if ( ( '%' == in ) && ISXDIGIT ( string [ 1 ] ) && ISXDIGIT ( string [ 2 ] ) ) { <S2SV_EndBug> char hexstr [ 3 ] ; char * ptr ; hexstr [ 0 ] = string [ 1 ] ; hexstr [ 1 ] = string [ 2 ] ; hexstr [ 2 ] = 0 ; hex = strtoul ( hexstr , & ptr , 16 ) ; in = curlx_ultouc ( hex ) ; res = Curl_convert_from_network ( data , & in , 1 ) ; if ( res ) { free ( ns ) ; return res ; } string += 2 ; alloc -= 2 ; } if ( reject_ctrl && ( in < 0x20 ) ) { free ( ns ) ; return CURLE_URL_MALFORMAT ; } ns [ strindex ++ ] = in ; string ++ ; } ns [ strindex ] = 0 ; if ( olen ) * olen = strindex ; if ( ostring ) * ostring = ns ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in ) && ( alloc > 2 ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 int inet6_csk_xmit ( struct sock * sk , struct sk_buff * skb , struct flowi * fl_unused ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct flowi6 fl6 ; struct dst_entry * dst ; int res ; dst = inet6_csk_route_socket ( sk , & fl6 ) ; if ( IS_ERR ( dst ) ) { sk -> sk_err_soft = - PTR_ERR ( dst ) ; sk -> sk_route_caps = 0 ; kfree_skb ( skb ) ; return PTR_ERR ( dst ) ; } rcu_read_lock ( ) ; skb_dst_set_noref ( skb , dst ) ; fl6 . daddr = sk -> sk_v6_daddr ; <S2SV_StartBug> res = ip6_xmit ( sk , skb , & fl6 , np -> opt , np -> tclass ) ; <S2SV_EndBug> rcu_read_unlock ( ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5970\n\n```\nCWE-476 void ipv4_pktinfo_prepare ( const struct sock * sk , struct sk_buff * skb ) { struct in_pktinfo * pktinfo = PKTINFO_SKB_CB ( skb ) ; bool prepare = ( inet_sk ( sk ) -> cmsg_flags & IP_CMSG_PKTINFO ) || ipv6_sk_rxinfo ( sk ) ; if ( prepare && skb_rtable ( skb ) ) { if ( pktinfo -> ipi_ifindex == LOOPBACK_IFINDEX ) pktinfo -> ipi_ifindex = inet_iif ( skb ) ; pktinfo -> ipi_spec_dst . s_addr = fib_compute_spec_dst ( skb ) ; } else { pktinfo -> ipi_ifindex = 0 ; pktinfo -> ipi_spec_dst . s_addr = 0 ; } <S2SV_StartBug> skb_dst_drop ( skb ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } if ( unlikely ( IPCB ( skb ) -> opt . optlen ) ) skb_dst_force ( skb ) ; else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2870\n\n```\nCWE-399 static void xsltCompileLocationPathPattern ( xsltParserContextPtr ctxt , int novar ) { SKIP_BLANKS ; if ( ( CUR == '/' ) && ( NXT ( 1 ) == '/' ) ) { NEXT ; NEXT ; ctxt -> comp -> priority = 0.5 ; xsltCompileRelativePathPattern ( ctxt , NULL , novar ) ; } else if ( CUR == '/' ) { NEXT ; SKIP_BLANKS ; PUSH ( XSLT_OP_ROOT , NULL , NULL , novar ) ; if ( ( CUR != 0 ) && ( CUR != '|' ) ) { PUSH ( XSLT_OP_PARENT , NULL , NULL , novar ) ; xsltCompileRelativePathPattern ( ctxt , NULL , novar ) ; } } else if ( CUR == '*' ) { xsltCompileRelativePathPattern ( ctxt , NULL , novar ) ; } else if ( CUR == '@' ) { xsltCompileRelativePathPattern ( ctxt , NULL , novar ) ; } else { xmlChar * name ; name = xsltScanNCName ( ctxt ) ; if ( name == NULL ) { xsltTransformError ( NULL , NULL , NULL , \"xsltCompileLocationPathPattern<S2SV_blank>:<S2SV_blank>Name<S2SV_blank>expected\\\\n\" ) ; ctxt -> error = 1 ; return ; } SKIP_BLANKS ; if ( ( CUR == '(' ) && ! xmlXPathIsNodeType ( name ) ) { xsltCompileIdKeyPattern ( ctxt , name , 1 , novar , 0 ) ; <S2SV_StartBug> if ( ( CUR == '/' ) && ( NXT ( 1 ) == '/' ) ) { <S2SV_EndBug> PUSH ( XSLT_OP_ANCESTOR , NULL , NULL , novar ) ; NEXT ; NEXT ; SKIP_BLANKS ; xsltCompileRelativePathPattern ( ctxt , NULL , novar ) ; } else if ( CUR == '/' ) { PUSH ( XSLT_OP_PARENT , NULL , NULL , novar ) ; NEXT ; SKIP_BLANKS ; xsltCompileRelativePathPattern ( ctxt , NULL , novar ) ; } return ; } xsltCompileRelativePathPattern ( ctxt , name , novar ) ; } error : return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ctxt -> error ) return ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int iucv_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct iucv_sock * iucv = iucv_sk ( sk ) ; unsigned int copied , rlen ; struct sk_buff * skb , * rskb , * cskb ; int err = 0 ; <S2SV_StartBug> u32 offset ; <S2SV_EndBug> msg -> msg_namelen = 0 ; if ( ( sk -> sk_state == IUCV_DISCONN ) && skb_queue_empty ( & iucv -> backlog_skb_q ) && skb_queue_empty ( & sk -> sk_receive_queue ) && list_empty ( & iucv -> message_q . list ) ) return 0 ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) { if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } offset = IUCV_SKB_CB ( skb ) -> offset ; rlen = skb -> len - offset ; copied = min_t ( unsigned int , rlen , len ) ; if ( ! rlen ) sk -> sk_shutdown = sk -> sk_shutdown | RCV_SHUTDOWN ; cskb = skb ; if ( skb_copy_datagram_iovec ( cskb , offset , msg -> msg_iov , copied ) ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - EFAULT ; } if ( sk -> sk_type == SOCK_SEQPACKET ) { if ( copied < rlen ) msg -> msg_flags |= MSG_TRUNC ; msg -> msg_flags |= MSG_EOR ; } err = put_cmsg ( msg , SOL_IUCV , SCM_IUCV_TRGCLS , sizeof ( IUCV_SKB_CB ( skb ) -> class ) , ( void * ) & IUCV_SKB_CB ( skb ) -> class ) ; if ( err ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return err ; } if ( ! ( flags & MSG_PEEK ) ) { if ( sk -> sk_type == SOCK_STREAM ) { if ( copied < rlen ) { IUCV_SKB_CB ( skb ) -> offset = offset + copied ; goto done ; } } kfree_skb ( skb ) ; if ( iucv -> transport == AF_IUCV_TRANS_HIPER ) { atomic_inc ( & iucv -> msg_recv ) ; if ( atomic_read ( & iucv -> msg_recv ) > iucv -> msglimit ) { WARN_ON ( 1 ) ; iucv_sock_close ( sk ) ; return - EFAULT ; } } spin_lock_bh ( & iucv -> message_q . lock ) ; rskb = skb_dequeue ( & iucv -> backlog_skb_q ) ; while ( rskb ) { IUCV_SKB_CB ( rskb ) -> offset = 0 ; if ( sock_queue_rcv_skb ( sk , rskb ) ) { skb_queue_head ( & iucv -> backlog_skb_q , rskb ) ; break ; } else { rskb = skb_dequeue ( & iucv -> backlog_skb_q ) ; } } if ( skb_queue_empty ( & iucv -> backlog_skb_q ) ) { if ( ! list_empty ( & iucv -> message_q . list ) ) iucv_process_message_q ( sk ) ; if ( atomic_read ( & iucv -> msg_recv ) >= iucv -> msglimit / 2 ) { err = iucv_send_ctrl ( sk , AF_IUCV_FLAG_WIN ) ; if ( err ) { sk -> sk_state = IUCV_DISCONN ; sk -> sk_state_change ( sk ) ; } } } spin_unlock_bh ( & iucv -> message_q . lock ) ; } done : if ( sk -> sk_type == SOCK_SEQPACKET && ( flags & MSG_TRUNC ) ) copied = rlen ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; u32 offset <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9278\n\n```\nCWE-787 static void exif_data_load_data_thumbnail ( ExifData * data , const unsigned char * d , unsigned int ds , ExifLong o , ExifLong s ) { <S2SV_StartBug> if ( ( o + s < o ) || ( o + s < s ) || ( o + s > ds ) || ( o > ds ) ) { <S2SV_EndBug> <S2SV_StartBug> exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , <S2SV_EndBug> \"Bogus<S2SV_blank>thumbnail<S2SV_blank>offset<S2SV_blank>(%u)<S2SV_blank>or<S2SV_blank>size<S2SV_blank>(%u).\" , o , s ) ; return ; } if ( data -> data ) exif_mem_free ( data -> priv -> mem , data -> data ) ; if ( ! ( data -> data = exif_data_alloc ( data , s ) ) ) { EXIF_LOG_NO_MEMORY ( data -> priv -> log , \"ExifData\" , s ) ; data -> size = 0 ; return ; } data -> size = s ; memcpy ( data -> data , d + o , s ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( o >= ds <S2SV_ModEnd> ) { exif_log <S2SV_ModStart> , \"ExifData\" , \"Bogus<S2SV_blank>thumbnail<S2SV_blank>offset<S2SV_blank>(%u).\" , o ) ; return ; } if ( s > ds - o ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Bogus<S2SV_blank>thumbnail<S2SV_blank>size<S2SV_blank>(%u),<S2SV_blank>max<S2SV_blank>would<S2SV_blank>be<S2SV_blank>%u.\" , s , ds - o <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 int ssh_packet_get_state ( struct ssh * ssh , struct sshbuf * m ) { struct session_state * state = ssh -> state ; u_char * p ; size_t slen , rlen ; int r , ssh1cipher ; if ( ! compat20 ) { ssh1cipher = cipher_ctx_get_number ( state -> receive_context ) ; slen = cipher_get_keyiv_len ( state -> send_context ) ; rlen = cipher_get_keyiv_len ( state -> receive_context ) ; if ( ( r = sshbuf_put_u32 ( m , state -> remote_protocol_flags ) ) != 0 || ( r = sshbuf_put_u32 ( m , ssh1cipher ) ) != 0 || ( r = sshbuf_put_string ( m , state -> ssh1_key , state -> ssh1_keylen ) ) != 0 || ( r = sshbuf_put_u32 ( m , slen ) ) != 0 || ( r = sshbuf_reserve ( m , slen , & p ) ) != 0 || ( r = cipher_get_keyiv ( state -> send_context , p , slen ) ) != 0 || ( r = sshbuf_put_u32 ( m , rlen ) ) != 0 || ( r = sshbuf_reserve ( m , rlen , & p ) ) != 0 || ( r = cipher_get_keyiv ( state -> receive_context , p , rlen ) ) != 0 ) return r ; } else { if ( ( r = kex_to_blob ( m , ssh -> kex ) ) != 0 || ( r = newkeys_to_blob ( m , ssh , MODE_OUT ) ) != 0 || ( r = newkeys_to_blob ( m , ssh , MODE_IN ) ) != 0 || ( r = sshbuf_put_u64 ( m , state -> rekey_limit ) ) != 0 || ( r = sshbuf_put_u32 ( m , state -> rekey_interval ) ) != 0 || ( r = sshbuf_put_u32 ( m , state -> p_send . seqnr ) ) != 0 || ( r = sshbuf_put_u64 ( m , state -> p_send . blocks ) ) != 0 || ( r = sshbuf_put_u32 ( m , state -> p_send . packets ) ) != 0 || ( r = sshbuf_put_u64 ( m , state -> p_send . bytes ) ) != 0 || ( r = sshbuf_put_u32 ( m , state -> p_read . seqnr ) ) != 0 || ( r = sshbuf_put_u64 ( m , state -> p_read . blocks ) ) != 0 || ( r = sshbuf_put_u32 ( m , state -> p_read . packets ) ) != 0 || ( r = sshbuf_put_u64 ( m , state -> p_read . bytes ) ) != 0 ) return r ; } slen = cipher_get_keycontext ( state -> send_context , NULL ) ; rlen = cipher_get_keycontext ( state -> receive_context , NULL ) ; if ( ( r = sshbuf_put_u32 ( m , slen ) ) != 0 || ( r = sshbuf_reserve ( m , slen , & p ) ) != 0 ) return r ; if ( cipher_get_keycontext ( state -> send_context , p ) != ( int ) slen ) return SSH_ERR_INTERNAL_ERROR ; if ( ( r = sshbuf_put_u32 ( m , rlen ) ) != 0 || ( r = sshbuf_reserve ( m , rlen , & p ) ) != 0 ) return r ; if ( cipher_get_keycontext ( state -> receive_context , p ) != ( int ) rlen ) return SSH_ERR_INTERNAL_ERROR ; <S2SV_StartBug> if ( ( r = ssh_packet_get_compress_state ( m , ssh ) ) != 0 || <S2SV_EndBug> ( r = sshbuf_put_stringb ( m , state -> input ) ) != 0 || ( r = sshbuf_put_stringb ( m , state -> output ) ) != 0 ) return r ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( r = <S2SV_ModEnd> sshbuf_put_stringb ( m\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-28856\n\n```\nCWE-369 void fmtutil_macbitmap_read_pixmap_only_fields ( deark * c , dbuf * f , struct fmtutil_macbitmap_info * bi , i64 pos ) { i64 pixmap_version ; i64 pack_size ; i64 plane_bytes ; i64 n ; de_dbg ( c , \"additional<S2SV_blank>PixMap<S2SV_blank>header<S2SV_blank>fields,<S2SV_blank>at<S2SV_blank>%d\" , ( int ) pos ) ; de_dbg_indent ( c , 1 ) ; pixmap_version = dbuf_getu16be ( f , pos + 0 ) ; de_dbg ( c , \"pixmap<S2SV_blank>version:<S2SV_blank>%d\" , ( int ) pixmap_version ) ; bi -> packing_type = dbuf_getu16be ( f , pos + 2 ) ; de_dbg ( c , \"packing<S2SV_blank>type:<S2SV_blank>%d\" , ( int ) bi -> packing_type ) ; pack_size = dbuf_getu32be ( f , pos + 4 ) ; de_dbg ( c , \"pixel<S2SV_blank>data<S2SV_blank>length:<S2SV_blank>%d\" , ( int ) pack_size ) ; bi -> hdpi = pict_read_fixed ( f , pos + 8 ) ; bi -> vdpi = pict_read_fixed ( f , pos + 12 ) ; de_dbg ( c , \"dpi:<S2SV_blank>%.2f\" DE_CHAR_TIMES \"%.2f\" , bi -> hdpi , bi -> vdpi ) ; bi -> pixeltype = dbuf_getu16be ( f , pos + 16 ) ; bi -> pixelsize = dbuf_getu16be ( f , pos + 18 ) ; bi -> cmpcount = dbuf_getu16be ( f , pos + 20 ) ; bi -> cmpsize = dbuf_getu16be ( f , pos + 22 ) ; de_dbg ( c , \"pixel<S2SV_blank>type=%d,<S2SV_blank>bits/pixel=%d,<S2SV_blank>components/pixel=%d,<S2SV_blank>bits/comp=%d\" , ( int ) bi -> pixeltype , ( int ) bi -> pixelsize , ( int ) bi -> cmpcount , ( int ) bi -> cmpsize ) ; <S2SV_StartBug> bi -> pdwidth = ( bi -> rowbytes * 8 ) / bi -> pixelsize ; <S2SV_EndBug> <S2SV_StartBug> if ( bi -> pdwidth < bi -> npwidth ) { <S2SV_EndBug> bi -> pdwidth = bi -> npwidth ; } plane_bytes = dbuf_getu32be ( f , pos + 24 ) ; de_dbg ( c , \"plane<S2SV_blank>bytes:<S2SV_blank>%d\" , ( int ) plane_bytes ) ; bi -> pmTable = ( u32 ) dbuf_getu32be ( f , pos + 28 ) ; de_dbg ( c , \"pmTable:<S2SV_blank>0x%08x\" , ( unsigned int ) bi -> pmTable ) ; n = dbuf_getu32be ( f , pos + 32 ) ; de_dbg ( c , \"pmReserved:<S2SV_blank>0x%08x\" , ( unsigned int ) n ) ; de_dbg_indent ( c , - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cmpsize ) ; if ( bi -> pixelsize > 0 ) { <S2SV_ModStart> -> pixelsize ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_unregister_devs_sas_addr ( struct domain_device * parent , int phy_id , bool last ) { struct expander_device * ex_dev = & parent -> ex_dev ; struct ex_phy * phy = & ex_dev -> ex_phy [ phy_id ] ; struct domain_device * child , * n , * found = NULL ; if ( last ) { list_for_each_entry_safe ( child , n , & ex_dev -> children , siblings ) { if ( SAS_ADDR ( child -> sas_addr ) == SAS_ADDR ( phy -> attached_sas_addr ) ) { set_bit ( SAS_DEV_GONE , & child -> state ) ; if ( child -> dev_type == SAS_EDGE_EXPANDER_DEVICE || child -> dev_type == SAS_FANOUT_EXPANDER_DEVICE ) sas_unregister_ex_tree ( parent -> port , child ) ; else sas_unregister_dev ( parent -> port , child ) ; found = child ; break ; } } sas_disable_routing ( parent , phy -> attached_sas_addr ) ; } memset ( phy -> attached_sas_addr , 0 , SAS_ADDR_SIZE ) ; if ( phy -> port ) { sas_port_delete_phy ( phy -> port , phy -> phy ) ; sas_device_set_phy ( found , phy -> port ) ; if ( phy -> port -> num_phys == 0 ) <S2SV_StartBug> sas_port_delete ( phy -> port ) ; <S2SV_EndBug> phy -> port = NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) list_add_tail ( & phy -> port -> del_list , & parent -> port -> sas_port_del_list <S2SV_ModEnd> ) ; phy\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-200 <S2SV_StartBug> static u32 __ipv6_select_ident ( struct net * net , u32 hashrnd , <S2SV_EndBug> const struct in6_addr * dst , const struct in6_addr * src ) { <S2SV_StartBug> u32 hash , id ; <S2SV_EndBug> <S2SV_StartBug> hash = __ipv6_addr_jhash ( dst , hashrnd ) ; <S2SV_EndBug> <S2SV_StartBug> hash = __ipv6_addr_jhash ( src , hash ) ; <S2SV_EndBug> hash ^= net_hash_mix ( net ) ; id = ip_idents_reserve ( hash , 1 ) ; if ( unlikely ( ! id ) ) id = 1 << 31 ; return id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> net * net <S2SV_ModEnd> , const struct <S2SV_ModStart> src ) { const struct { struct in6_addr dst ; struct in6_addr src ; } __aligned ( SIPHASH_ALIGNMENT ) combined = { . dst = * dst , . src = * src , } ; <S2SV_ModStart> , id ; if ( unlikely ( siphash_key_is_zero ( & net -> ipv4 . ip_id_key ) ) ) get_random_bytes ( & net -> ipv4 . ip_id_key , sizeof ( net -> ipv4 . ip_id_key ) <S2SV_ModEnd> ) ; hash <S2SV_ModStart> ; hash = siphash ( & combined , sizeof ( combined ) , & net -> ipv4 . ip_id_key <S2SV_ModEnd> ) ; id\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8830\n\n```\nCWE-000 static ssize_t aio_setup_single_vector ( struct kiocb * kiocb , int rw , char __user * buf , unsigned long * nr_segs , struct iovec * iovec ) { <S2SV_StartBug> if ( unlikely ( ! access_ok ( ! rw , buf , kiocb -> ki_nbytes ) ) ) <S2SV_EndBug> return - EFAULT ; iovec -> iov_base = buf ; <S2SV_StartBug> iovec -> iov_len = kiocb -> ki_nbytes ; <S2SV_EndBug> * nr_segs = 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iovec ) { size_t len = kiocb -> ki_nbytes ; if ( len > MAX_RW_COUNT ) len = MAX_RW_COUNT ; <S2SV_ModStart> , buf , len <S2SV_ModEnd> ) ) ) <S2SV_ModStart> -> iov_len = len <S2SV_ModEnd> ; * nr_segs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int PredictorEncodeRow ( TIFF * tif , uint8 * bp , tmsize_t cc , uint16 s ) { TIFFPredictorState * sp = PredictorState ( tif ) ; assert ( sp != NULL ) ; assert ( sp -> encodepfunc != NULL ) ; assert ( sp -> encoderow != NULL ) ; <S2SV_StartBug> ( * sp -> encodepfunc ) ( tif , bp , cc ) ; <S2SV_EndBug> return ( * sp -> encoderow ) ( tif , bp , cc , s ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; if ( ! <S2SV_ModStart> , cc ) ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void define_gf_group ( VP8_COMP * cpi , FIRSTPASS_STATS * this_frame ) { FIRSTPASS_STATS next_frame ; FIRSTPASS_STATS * start_pos ; int i ; double r ; double boost_score = 0.0 ; double old_boost_score = 0.0 ; double gf_group_err = 0.0 ; double gf_first_frame_err = 0.0 ; double mod_frame_err = 0.0 ; double mv_ratio_accumulator = 0.0 ; double decay_accumulator = 1.0 ; double loop_decay_rate = 1.00 ; double this_frame_mv_in_out = 0.0 ; double mv_in_out_accumulator = 0.0 ; double abs_mv_in_out_accumulator = 0.0 ; double mod_err_per_mb_accumulator = 0.0 ; int max_bits = frame_max_bits ( cpi ) ; unsigned int allow_alt_ref = cpi -> oxcf . play_alternate && cpi -> oxcf . lag_in_frames ; int alt_boost = 0 ; int f_boost = 0 ; int b_boost = 0 ; int flash_detected ; cpi -> twopass . gf_group_bits = 0 ; cpi -> twopass . gf_decay_rate = 0 ; vp8_clear_system_state ( ) ; start_pos = cpi -> twopass . stats_in ; <S2SV_StartBug> vpx_memset ( & next_frame , 0 , sizeof ( next_frame ) ) ; <S2SV_EndBug> mod_frame_err = calculate_modified_err ( cpi , this_frame ) ; gf_first_frame_err = mod_frame_err ; if ( cpi -> common . frame_type == KEY_FRAME ) gf_group_err -= gf_first_frame_err ; i = 0 ; while ( ( ( i < cpi -> twopass . static_scene_max_gf_interval ) || ( ( cpi -> twopass . frames_to_key - i ) < MIN_GF_INTERVAL ) ) && ( i < cpi -> twopass . frames_to_key ) ) { i ++ ; mod_frame_err = calculate_modified_err ( cpi , this_frame ) ; gf_group_err += mod_frame_err ; mod_err_per_mb_accumulator += mod_frame_err / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> common . MBs ) ; if ( EOF == input_stats ( cpi , & next_frame ) ) break ; flash_detected = detect_flash ( cpi , 0 ) ; accumulate_frame_motion_stats ( cpi , & next_frame , & this_frame_mv_in_out , & mv_in_out_accumulator , & abs_mv_in_out_accumulator , & mv_ratio_accumulator ) ; r = calc_frame_boost ( cpi , & next_frame , this_frame_mv_in_out ) ; if ( ! flash_detected ) { loop_decay_rate = get_prediction_decay_rate ( cpi , & next_frame ) ; decay_accumulator = decay_accumulator * loop_decay_rate ; decay_accumulator = decay_accumulator < 0.1 ? 0.1 : decay_accumulator ; } boost_score += ( decay_accumulator * r ) ; if ( detect_transition_to_still ( cpi , i , 5 , loop_decay_rate , decay_accumulator ) ) { allow_alt_ref = 0 ; boost_score = old_boost_score ; break ; } if ( ( i >= cpi -> max_gf_interval && ( decay_accumulator < 0.995 ) ) || ( ( i > MIN_GF_INTERVAL ) && ( ( cpi -> twopass . frames_to_key - i ) >= MIN_GF_INTERVAL ) && ( ( boost_score > 20.0 ) || ( next_frame . pcnt_inter < 0.75 ) ) && ( ! flash_detected ) && ( ( mv_ratio_accumulator > 100.0 ) || ( abs_mv_in_out_accumulator > 3.0 ) || ( mv_in_out_accumulator < - 2.0 ) || ( ( boost_score - old_boost_score ) < 2.0 ) ) ) ) { boost_score = old_boost_score ; break ; } <S2SV_StartBug> vpx_memcpy ( this_frame , & next_frame , sizeof ( * this_frame ) ) ; <S2SV_EndBug> old_boost_score = boost_score ; } cpi -> twopass . gf_decay_rate = ( i > 0 ) ? ( int ) ( 100.0 * ( 1.0 - decay_accumulator ) ) / i : 0 ; if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { double max_boost ; if ( cpi -> drop_frames_allowed ) { int64_t df_buffer_level = cpi -> oxcf . drop_frames_water_mark * ( cpi -> oxcf . optimal_buffer_level / 100 ) ; if ( cpi -> buffer_level > df_buffer_level ) max_boost = ( ( double ) ( ( cpi -> buffer_level - df_buffer_level ) * 2 / 3 ) * 16.0 ) / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> av_per_frame_bandwidth ) ; else max_boost = 0.0 ; } else if ( cpi -> buffer_level > 0 ) { max_boost = ( ( double ) ( cpi -> buffer_level * 2 / 3 ) * 16.0 ) / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> av_per_frame_bandwidth ) ; } else { max_boost = 0.0 ; } if ( boost_score > max_boost ) boost_score = max_boost ; } if ( ( cpi -> twopass . frames_to_key - i ) < MIN_GF_INTERVAL ) { while ( i < cpi -> twopass . frames_to_key ) { i ++ ; if ( EOF == input_stats ( cpi , this_frame ) ) break ; if ( i < cpi -> twopass . frames_to_key ) { mod_frame_err = calculate_modified_err ( cpi , this_frame ) ; gf_group_err += mod_frame_err ; } } } cpi -> gfu_boost = ( int ) ( boost_score * 100.0 ) >> 4 ; # if NEW_BOOST alt_boost = calc_arf_boost ( cpi , 0 , ( i - 1 ) , ( i - 1 ) , & f_boost , & b_boost ) ; # endif if ( allow_alt_ref && ( i >= MIN_GF_INTERVAL ) && ( i <= ( cpi -> twopass . frames_to_key - MIN_GF_INTERVAL ) ) && # if NEW_BOOST ( ( next_frame . pcnt_inter > 0.75 ) || ( next_frame . pcnt_second_ref > 0.5 ) ) && ( ( mv_in_out_accumulator / ( double ) i > - 0.2 ) || ( mv_in_out_accumulator > - 2.0 ) ) && ( b_boost > 100 ) && ( f_boost > 100 ) ) # else ( next_frame . pcnt_inter > 0.75 ) && ( ( mv_in_out_accumulator / ( double ) i > - 0.2 ) || ( mv_in_out_accumulator > - 2.0 ) ) && ( cpi -> gfu_boost > 100 ) && ( cpi -> twopass . gf_decay_rate <= ( ARF_DECAY_THRESH + ( cpi -> gfu_boost / 200 ) ) ) ) # endif { int Boost ; int allocation_chunks ; int Q = ( cpi -> oxcf . fixed_q < 0 ) ? cpi -> last_q [ INTER_FRAME ] : cpi -> oxcf . fixed_q ; int tmp_q ; int arf_frame_bits = 0 ; int group_bits ; # if NEW_BOOST cpi -> gfu_boost = alt_boost ; # endif if ( ( cpi -> twopass . kf_group_bits > 0 ) && ( cpi -> twopass . kf_group_error_left > 0 ) ) { group_bits = ( int ) ( ( double ) cpi -> twopass . kf_group_bits * ( gf_group_err / ( double ) cpi -> twopass . kf_group_error_left ) ) ; } else group_bits = 0 ; # if NEW_BOOST Boost = ( alt_boost * GFQ_ADJUSTMENT ) / 100 ; # else Boost = ( cpi -> gfu_boost * 3 * GFQ_ADJUSTMENT ) / ( 2 * 100 ) ; # endif Boost += ( i * 50 ) ; if ( Boost > ( ( cpi -> baseline_gf_interval + 1 ) * 200 ) ) Boost = ( ( cpi -> baseline_gf_interval + 1 ) * 200 ) ; else if ( Boost < 125 ) Boost = 125 ; allocation_chunks = ( i * 100 ) + Boost ; while ( Boost > 1000 ) { Boost /= 2 ; allocation_chunks /= 2 ; } arf_frame_bits = ( int ) ( ( double ) Boost * ( group_bits / ( double ) allocation_chunks ) ) ; tmp_q = estimate_q ( cpi , mod_frame_err , ( int ) arf_frame_bits ) ; if ( tmp_q < cpi -> worst_quality ) { int half_gf_int ; int frames_after_arf ; int frames_bwd = cpi -> oxcf . arnr_max_frames - 1 ; int frames_fwd = cpi -> oxcf . arnr_max_frames - 1 ; cpi -> source_alt_ref_pending = 1 ; cpi -> baseline_gf_interval = i ; half_gf_int = cpi -> baseline_gf_interval >> 1 ; frames_after_arf = ( int ) ( cpi -> twopass . total_stats . count - this_frame -> frame - 1 ) ; switch ( cpi -> oxcf . arnr_type ) { case 1 : frames_fwd = 0 ; if ( frames_bwd > half_gf_int ) frames_bwd = half_gf_int ; break ; case 2 : if ( frames_fwd > half_gf_int ) frames_fwd = half_gf_int ; if ( frames_fwd > frames_after_arf ) frames_fwd = frames_after_arf ; frames_bwd = 0 ; break ; case 3 : default : frames_fwd >>= 1 ; if ( frames_fwd > frames_after_arf ) frames_fwd = frames_after_arf ; if ( frames_fwd > half_gf_int ) frames_fwd = half_gf_int ; frames_bwd = frames_fwd ; if ( frames_bwd < half_gf_int ) frames_bwd += ( cpi -> oxcf . arnr_max_frames + 1 ) & 0x1 ; break ; } cpi -> active_arnr_frames = frames_bwd + 1 + frames_fwd ; } else { cpi -> source_alt_ref_pending = 0 ; cpi -> baseline_gf_interval = i ; } } else { cpi -> source_alt_ref_pending = 0 ; cpi -> baseline_gf_interval = i ; } if ( cpi -> twopass . frames_to_key >= ( int ) ( cpi -> twopass . total_stats . count - cpi -> common . current_video_frame ) ) { cpi -> twopass . kf_group_bits = ( cpi -> twopass . bits_left > 0 ) ? cpi -> twopass . bits_left : 0 ; } if ( ( cpi -> twopass . kf_group_bits > 0 ) && ( cpi -> twopass . kf_group_error_left > 0 ) ) { cpi -> twopass . gf_group_bits = ( int64_t ) ( cpi -> twopass . kf_group_bits * ( gf_group_err / cpi -> twopass . kf_group_error_left ) ) ; } else cpi -> twopass . gf_group_bits = 0 ; cpi -> twopass . gf_group_bits = ( cpi -> twopass . gf_group_bits < 0 ) ? 0 : ( cpi -> twopass . gf_group_bits > cpi -> twopass . kf_group_bits ) ? cpi -> twopass . kf_group_bits : cpi -> twopass . gf_group_bits ; if ( cpi -> twopass . gf_group_bits > ( int64_t ) max_bits * cpi -> baseline_gf_interval ) cpi -> twopass . gf_group_bits = ( int64_t ) max_bits * cpi -> baseline_gf_interval ; reset_fpf_position ( cpi , start_pos ) ; cpi -> twopass . modified_error_used += gf_group_err ; for ( i = 0 ; i <= ( cpi -> source_alt_ref_pending && cpi -> common . frame_type != KEY_FRAME ) ; i ++ ) { int Boost ; int allocation_chunks ; int Q = ( cpi -> oxcf . fixed_q < 0 ) ? cpi -> last_q [ INTER_FRAME ] : cpi -> oxcf . fixed_q ; int gf_bits ; if ( cpi -> source_alt_ref_pending && i == 0 ) { # if NEW_BOOST Boost = ( alt_boost * GFQ_ADJUSTMENT ) / 100 ; # else Boost = ( cpi -> gfu_boost * 3 * GFQ_ADJUSTMENT ) / ( 2 * 100 ) ; # endif Boost += ( cpi -> baseline_gf_interval * 50 ) ; if ( Boost > ( ( cpi -> baseline_gf_interval + 1 ) * 200 ) ) Boost = ( ( cpi -> baseline_gf_interval + 1 ) * 200 ) ; else if ( Boost < 125 ) Boost = 125 ; allocation_chunks = ( ( cpi -> baseline_gf_interval + 1 ) * 100 ) + Boost ; } else { Boost = ( cpi -> gfu_boost * GFQ_ADJUSTMENT ) / 100 ; if ( Boost > ( cpi -> baseline_gf_interval * 150 ) ) Boost = ( cpi -> baseline_gf_interval * 150 ) ; else if ( Boost < 125 ) Boost = 125 ; allocation_chunks = ( cpi -> baseline_gf_interval * 100 ) + ( Boost - 100 ) ; } while ( Boost > 1000 ) { Boost /= 2 ; allocation_chunks /= 2 ; } gf_bits = ( int ) ( ( double ) Boost * ( cpi -> twopass . gf_group_bits / ( double ) allocation_chunks ) ) ; if ( mod_frame_err < gf_group_err / ( double ) cpi -> baseline_gf_interval ) { double alt_gf_grp_bits ; int alt_gf_bits ; alt_gf_grp_bits = ( double ) cpi -> twopass . kf_group_bits * ( mod_frame_err * ( double ) cpi -> baseline_gf_interval ) / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> twopass . kf_group_error_left ) ; alt_gf_bits = ( int ) ( ( double ) Boost * ( alt_gf_grp_bits / ( double ) allocation_chunks ) ) ; if ( gf_bits > alt_gf_bits ) { gf_bits = alt_gf_bits ; } } else { int alt_gf_bits = ( int ) ( ( double ) cpi -> twopass . kf_group_bits * mod_frame_err / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> twopass . kf_group_error_left ) ) ; if ( alt_gf_bits > gf_bits ) { gf_bits = alt_gf_bits ; } } if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { if ( cpi -> twopass . gf_bits > ( int ) ( cpi -> buffer_level >> 1 ) ) cpi -> twopass . gf_bits = ( int ) ( cpi -> buffer_level >> 1 ) ; } if ( gf_bits < 0 ) gf_bits = 0 ; gf_bits += cpi -> min_frame_bandwidth ; if ( i == 0 ) { cpi -> twopass . gf_bits = gf_bits ; } if ( i == 1 || ( ! cpi -> source_alt_ref_pending && ( cpi -> common . frame_type != KEY_FRAME ) ) ) { cpi -> per_frame_bandwidth = gf_bits ; } } { cpi -> twopass . kf_group_error_left -= ( int64_t ) gf_group_err ; cpi -> twopass . kf_group_bits -= cpi -> twopass . gf_group_bits ; if ( cpi -> twopass . kf_group_bits < 0 ) cpi -> twopass . kf_group_bits = 0 ; if ( ! cpi -> source_alt_ref_pending && cpi -> common . frame_type != KEY_FRAME ) cpi -> twopass . gf_group_error_left = ( int ) ( gf_group_err - gf_first_frame_err ) ; else cpi -> twopass . gf_group_error_left = ( int ) gf_group_err ; cpi -> twopass . gf_group_bits -= cpi -> twopass . gf_bits - cpi -> min_frame_bandwidth ; if ( cpi -> twopass . gf_group_bits < 0 ) cpi -> twopass . gf_group_bits = 0 ; if ( cpi -> baseline_gf_interval >= 3 ) { # if NEW_BOOST int boost = ( cpi -> source_alt_ref_pending ) ? b_boost : cpi -> gfu_boost ; # else int boost = cpi -> gfu_boost ; # endif if ( boost >= 150 ) { int pct_extra ; pct_extra = ( boost - 100 ) / 50 ; pct_extra = ( pct_extra > 20 ) ? 20 : pct_extra ; cpi -> twopass . alt_extra_bits = ( int ) ( cpi -> twopass . gf_group_bits * pct_extra ) / 100 ; cpi -> twopass . gf_group_bits -= cpi -> twopass . alt_extra_bits ; cpi -> twopass . alt_extra_bits /= ( ( cpi -> baseline_gf_interval - 1 ) >> 1 ) ; } else cpi -> twopass . alt_extra_bits = 0 ; } else cpi -> twopass . alt_extra_bits = 0 ; } if ( cpi -> common . frame_type != KEY_FRAME ) { FIRSTPASS_STATS sectionstats ; double Ratio ; zero_stats ( & sectionstats ) ; reset_fpf_position ( cpi , start_pos ) ; for ( i = 0 ; i < cpi -> baseline_gf_interval ; i ++ ) { input_stats ( cpi , & next_frame ) ; accumulate_stats ( & sectionstats , & next_frame ) ; } avg_stats ( & sectionstats ) ; cpi -> twopass . section_intra_rating = ( unsigned int ) ( sectionstats . intra_error / DOUBLE_DIVIDE_CHECK ( sectionstats . coded_error ) ) ; Ratio = sectionstats . intra_error / DOUBLE_DIVIDE_CHECK ( sectionstats . coded_error ) ; cpi -> twopass . section_max_qfactor = 1.0 - ( ( Ratio - 10.0 ) * 0.025 ) ; if ( cpi -> twopass . section_max_qfactor < 0.80 ) cpi -> twopass . section_max_qfactor = 0.80 ; reset_fpf_position ( cpi , start_pos ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . stats_in ; memset <S2SV_ModEnd> ( & next_frame <S2SV_ModStart> break ; } memcpy <S2SV_ModEnd> ( this_frame ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18586\n\n```\nCWE-22 int main ( int argc , char * argv [ ] ) { struct mschm_decompressor * chmd ; struct mschmd_header * chm ; struct mschmd_file * file , * * f ; unsigned int numf , i ; setbuf ( stdout , NULL ) ; setbuf ( stderr , NULL ) ; user_umask = umask ( 0 ) ; umask ( user_umask ) ; MSPACK_SYS_SELFTEST ( i ) ; if ( i ) return 0 ; if ( ( chmd = mspack_create_chm_decompressor ( NULL ) ) ) { for ( argv ++ ; * argv ; argv ++ ) { printf ( \"%s\\\\n\" , * argv ) ; if ( ( chm = chmd -> open ( chmd , * argv ) ) ) { for ( numf = 0 , file = chm -> files ; file ; file = file -> next ) numf ++ ; if ( ( f = ( struct mschmd_file * * ) calloc ( numf , sizeof ( struct mschmd_file * ) ) ) ) { for ( i = 0 , file = chm -> files ; file ; file = file -> next ) f [ i ++ ] = file ; qsort ( f , numf , sizeof ( struct mschmd_file * ) , & sortfunc ) ; for ( i = 0 ; i < numf ; i ++ ) { <S2SV_StartBug> char * outname = create_output_name ( ( unsigned char * ) f [ i ] -> filename , NULL , 0 , 1 , 0 ) ; <S2SV_EndBug> printf ( \"Extracting<S2SV_blank>%s\\\\n\" , outname ) ; ensure_filepath ( outname ) ; if ( chmd -> extract ( chmd , f [ i ] , outname ) ) { printf ( \"%s:<S2SV_blank>extract<S2SV_blank>error<S2SV_blank>on<S2SV_blank>\\\\\"%s\\\\\":<S2SV_blank>%s\\\\n\" , * argv , f [ i ] -> filename , ERROR ( chmd ) ) ; } free ( outname ) ; } free ( f ) ; } chmd -> close ( chmd , chm ) ; } else { printf ( \"%s:<S2SV_blank>can\\'t<S2SV_blank>open<S2SV_blank>--<S2SV_blank>%s\\\\n\" , * argv , ERROR ( chmd ) ) ; } } mspack_destroy_chm_decompressor ( chmd ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = create_output_name ( <S2SV_ModEnd> f [ i <S2SV_ModStart> ] -> filename <S2SV_ModEnd> ) ; printf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010315\n\n```\nCWE-369 int ParseDsdiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t infilesize , total_samples ; DFFFileHeader dff_file_header ; DFFChunkHeader dff_chunk_header ; uint32_t bcount ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & dff_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & dff_file_header ) + 4 , sizeof ( DFFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( DFFFileHeader ) - 4 ) || strncmp ( dff_file_header . formType , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_file_header , sizeof ( DFFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackBigEndianToNative ( & dff_file_header , DFFFileHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && dff_file_header . ckDataSize && dff_file_header . ckDataSize + 1 && dff_file_header . ckDataSize + 12 != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file<S2SV_blank>(by<S2SV_blank>total<S2SV_blank>size)!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"file<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_file_header . ckDataSize ) ; # endif while ( 1 ) { if ( ! DoReadFile ( infile , & dff_chunk_header , sizeof ( DFFChunkHeader ) , & bcount ) || bcount != sizeof ( DFFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_chunk_header , sizeof ( DFFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( debug_logging_mode ) error_line ( \"chunk<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_chunk_header . ckDataSize ) ; if ( ! strncmp ( dff_chunk_header . ckID , \"FVER\" , 4 ) ) { uint32_t version ; if ( dff_chunk_header . ckDataSize != sizeof ( version ) || ! DoReadFile ( infile , & version , sizeof ( version ) , & bcount ) || bcount != sizeof ( version ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & version , sizeof ( version ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & version , \"L\" ) ; if ( debug_logging_mode ) error_line ( \"dsdiff<S2SV_blank>file<S2SV_blank>version<S2SV_blank>=<S2SV_blank>0x%08x\" , version ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"PROP\" , 4 ) ) { char * prop_chunk ; if ( dff_chunk_header . ckDataSize < 4 || dff_chunk_header . ckDataSize > 1024 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>total\" , ( int ) dff_chunk_header . ckDataSize ) ; prop_chunk = malloc ( ( size_t ) dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize , & bcount ) || bcount != dff_chunk_header . ckDataSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } if ( ! strncmp ( prop_chunk , \"SND<S2SV_blank>\" , 4 ) ) { char * cptr = prop_chunk + 4 , * eptr = prop_chunk + dff_chunk_header . ckDataSize ; <S2SV_StartBug> uint16_t numChannels , chansSpecified , chanMask = 0 ; <S2SV_EndBug> uint32_t sampleRate ; while ( eptr - cptr >= sizeof ( dff_chunk_header ) ) { memcpy ( & dff_chunk_header , cptr , sizeof ( dff_chunk_header ) ) ; cptr += sizeof ( dff_chunk_header ) ; WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( dff_chunk_header . ckDataSize > 0 && dff_chunk_header . ckDataSize <= eptr - cptr ) { if ( ! strncmp ( dff_chunk_header . ckID , \"FS<S2SV_blank><S2SV_blank>\" , 4 ) && dff_chunk_header . ckDataSize == 4 ) { memcpy ( & sampleRate , cptr , sizeof ( sampleRate ) ) ; WavpackBigEndianToNative ( & sampleRate , \"L\" ) ; cptr += dff_chunk_header . ckDataSize ; if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>sample<S2SV_blank>rate<S2SV_blank>of<S2SV_blank>%u<S2SV_blank>Hz\" , sampleRate ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CHNL\" , 4 ) && dff_chunk_header . ckDataSize >= 2 ) { memcpy ( & numChannels , cptr , sizeof ( numChannels ) ) ; WavpackBigEndianToNative ( & numChannels , \"S\" ) ; cptr += sizeof ( numChannels ) ; chansSpecified = ( int ) ( dff_chunk_header . ckDataSize - sizeof ( numChannels ) ) / 4 ; <S2SV_StartBug> if ( numChannels < chansSpecified || numChannels < 1 ) { <S2SV_EndBug> error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } while ( chansSpecified -- ) { if ( ! strncmp ( cptr , \"SLFT\" , 4 ) || ! strncmp ( cptr , \"MLFT\" , 4 ) ) chanMask |= 0x1 ; else if ( ! strncmp ( cptr , \"SRGT\" , 4 ) || ! strncmp ( cptr , \"MRGT\" , 4 ) ) chanMask |= 0x2 ; else if ( ! strncmp ( cptr , \"LS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x10 ; else if ( ! strncmp ( cptr , \"RS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x20 ; else if ( ! strncmp ( cptr , \"C<S2SV_blank><S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x4 ; else if ( ! strncmp ( cptr , \"LFE<S2SV_blank>\" , 4 ) ) chanMask |= 0x8 ; else if ( debug_logging_mode ) error_line ( \"undefined<S2SV_blank>channel<S2SV_blank>ID<S2SV_blank>%c%c%c%c\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; cptr += 4 ; } if ( debug_logging_mode ) error_line ( \"%d<S2SV_blank>channels,<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>0x%08x\" , numChannels , chanMask ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CMPR\" , 4 ) && dff_chunk_header . ckDataSize >= 4 ) { if ( strncmp ( cptr , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"DSDIFF<S2SV_blank>files<S2SV_blank>must<S2SV_blank>be<S2SV_blank>uncompressed,<S2SV_blank>not<S2SV_blank>\\\\\"%c%c%c%c\\\\\"!\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } cptr += dff_chunk_header . ckDataSize ; } else { if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP/SND<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; cptr += dff_chunk_header . ckDataSize ; } } else { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } } if ( chanMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>DSDIFF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( chanMask ) config -> channel_mask = chanMask ; config -> bits_per_sample = 8 ; config -> bytes_per_sample = 1 ; config -> num_channels = numChannels ; config -> sample_rate = sampleRate / 8 ; config -> qmode |= QMODE_DSD_MSB_FIRST ; } else if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>unknown<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , prop_chunk [ 0 ] , prop_chunk [ 1 ] , prop_chunk [ 2 ] , prop_chunk [ 3 ] , dff_chunk_header . ckDataSize ) ; free ( prop_chunk ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"DSD<S2SV_blank>\" , 4 ) ) { <S2SV_StartBug> total_samples = dff_chunk_header . ckDataSize / config -> num_channels ; <S2SV_EndBug> break ; } else { int bytes_to_copy = ( int ) ( ( ( dff_chunk_header . ckDataSize ) + 1 ) & ~ ( int64_t ) 1 ) ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( debug_logging_mode ) error_line ( \"setting<S2SV_blank>configuration<S2SV_blank>with<S2SV_blank>%lld<S2SV_blank>samples\" , total_samples ) ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint16_t numChannels = 0 <S2SV_ModStart> numChannels < 1 || numChannels > 256 <S2SV_ModStart> ) ) { if ( ! config -> num_channels ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-5321\n\n```\nCWE-000 static int tty_open ( struct inode * inode , struct file * filp ) { struct tty_struct * tty = NULL ; int noctty , retval ; struct tty_driver * driver ; int index ; dev_t device = inode -> i_rdev ; unsigned saved_flags = filp -> f_flags ; nonseekable_open ( inode , filp ) ; retry_open : noctty = filp -> f_flags & O_NOCTTY ; index = - 1 ; retval = 0 ; mutex_lock ( & tty_mutex ) ; tty_lock ( ) ; if ( device == MKDEV ( TTYAUX_MAJOR , 0 ) ) { tty = get_current_tty ( ) ; if ( ! tty ) { tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; return - ENXIO ; } driver = tty_driver_kref_get ( tty -> driver ) ; index = tty -> index ; filp -> f_flags |= O_NONBLOCK ; tty_kref_put ( tty ) ; goto got_driver ; } # ifdef CONFIG_VT if ( device == MKDEV ( TTY_MAJOR , 0 ) ) { extern struct tty_driver * console_driver ; driver = tty_driver_kref_get ( console_driver ) ; index = fg_console ; noctty = 1 ; goto got_driver ; } # endif if ( device == MKDEV ( TTYAUX_MAJOR , 1 ) ) { struct tty_driver * console_driver = console_device ( & index ) ; if ( console_driver ) { driver = tty_driver_kref_get ( console_driver ) ; if ( driver ) { filp -> f_flags |= O_NONBLOCK ; noctty = 1 ; goto got_driver ; } } tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; return - ENODEV ; } driver = get_tty_driver ( device , & index ) ; if ( ! driver ) { tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; return - ENODEV ; } got_driver : if ( ! tty ) { tty = tty_driver_lookup_tty ( driver , inode , index ) ; if ( IS_ERR ( tty ) ) { tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; <S2SV_StartBug> return PTR_ERR ( tty ) ; <S2SV_EndBug> } } if ( tty ) { retval = tty_reopen ( tty ) ; if ( retval ) tty = ERR_PTR ( retval ) ; } else tty = tty_init_dev ( driver , index , 0 ) ; mutex_unlock ( & tty_mutex ) ; tty_driver_kref_put ( driver ) ; if ( IS_ERR ( tty ) ) { tty_unlock ( ) ; return PTR_ERR ( tty ) ; } retval = tty_add_file ( tty , filp ) ; if ( retval ) { tty_unlock ( ) ; tty_release ( inode , filp ) ; return retval ; } check_tty_count ( tty , \"tty_open\" ) ; if ( tty -> driver -> type == TTY_DRIVER_TYPE_PTY && tty -> driver -> subtype == PTY_TYPE_MASTER ) noctty = 1 ; # ifdef TTY_DEBUG_HANGUP printk ( KERN_DEBUG \"opening<S2SV_blank>%s...\" , tty -> name ) ; # endif if ( tty -> ops -> open ) retval = tty -> ops -> open ( tty , filp ) ; else retval = - ENODEV ; filp -> f_flags = saved_flags ; if ( ! retval && test_bit ( TTY_EXCLUSIVE , & tty -> flags ) && ! capable ( CAP_SYS_ADMIN ) ) retval = - EBUSY ; if ( retval ) { # ifdef TTY_DEBUG_HANGUP printk ( KERN_DEBUG \"error<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>opening<S2SV_blank>%s...\" , retval , tty -> name ) ; # endif tty_unlock ( ) ; tty_release ( inode , filp ) ; if ( retval != - ERESTARTSYS ) return retval ; if ( signal_pending ( current ) ) return retval ; schedule ( ) ; tty_lock ( ) ; if ( filp -> f_op == & hung_up_tty_fops ) filp -> f_op = & tty_fops ; tty_unlock ( ) ; goto retry_open ; } tty_unlock ( ) ; mutex_lock ( & tty_mutex ) ; tty_lock ( ) ; spin_lock_irq ( & current -> sighand -> siglock ) ; if ( ! noctty && current -> signal -> leader && ! current -> signal -> tty && tty -> session == NULL ) __proc_set_tty ( current , tty ) ; spin_unlock_irq ( & current -> sighand -> siglock ) ; tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tty_mutex ) ; tty_driver_kref_put ( driver ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 void * sspi_SecureHandleGetLowerPointer ( SecHandle * handle ) { void * pointer ; <S2SV_StartBug> if ( ! handle ) <S2SV_EndBug> return NULL ; pointer = ( void * ) ~ ( ( size_t ) handle -> dwLower ) ; return pointer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! handle || ! SecIsValidHandle ( handle )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3673\n\n```\nCWE-399 sctp_disposition_t sctp_sf_do_asconf_ack ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { struct sctp_chunk * asconf_ack = arg ; struct sctp_chunk * last_asconf = asoc -> addip_last_asconf ; struct sctp_chunk * abort ; struct sctp_paramhdr * err_param = NULL ; sctp_addiphdr_t * addip_hdr ; __u32 sent_serial , rcvd_serial ; if ( ! sctp_vtag_verify ( asconf_ack , asoc ) ) { sctp_add_cmd_sf ( commands , SCTP_CMD_REPORT_BAD_TAG , SCTP_NULL ( ) ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } if ( ! net -> sctp . addip_noauth && ! asconf_ack -> auth ) return sctp_sf_discard_chunk ( net , ep , asoc , type , arg , commands ) ; if ( ! sctp_chunk_length_valid ( asconf_ack , sizeof ( sctp_addip_chunk_t ) ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; addip_hdr = ( sctp_addiphdr_t * ) asconf_ack -> skb -> data ; rcvd_serial = ntohl ( addip_hdr -> serial ) ; if ( ! sctp_verify_asconf ( asoc , <S2SV_StartBug> ( sctp_paramhdr_t * ) addip_hdr -> params , <S2SV_EndBug> ( void * ) asconf_ack -> chunk_end , & err_param ) ) return sctp_sf_violation_paramlen ( net , ep , asoc , type , arg , ( void * ) err_param , commands ) ; if ( last_asconf ) { addip_hdr = ( sctp_addiphdr_t * ) last_asconf -> subh . addip_hdr ; sent_serial = ntohl ( addip_hdr -> serial ) ; } else { sent_serial = asoc -> addip_serial - 1 ; } if ( ADDIP_SERIAL_gte ( rcvd_serial , sent_serial + 1 ) && ! ( asoc -> addip_last_asconf ) ) { abort = sctp_make_abort ( asoc , asconf_ack , sizeof ( sctp_errhdr_t ) ) ; if ( abort ) { sctp_init_cause ( abort , SCTP_ERROR_ASCONF_ACK , 0 ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_REPLY , SCTP_CHUNK ( abort ) ) ; } sctp_add_cmd_sf ( commands , SCTP_CMD_TIMER_STOP , SCTP_TO ( SCTP_EVENT_TIMEOUT_T4_RTO ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_DISCARD_PACKET , SCTP_NULL ( ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_SET_SK_ERR , SCTP_ERROR ( ECONNABORTED ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_ASSOC_FAILED , SCTP_PERR ( SCTP_ERROR_ASCONF_ACK ) ) ; SCTP_INC_STATS ( net , SCTP_MIB_ABORTEDS ) ; SCTP_DEC_STATS ( net , SCTP_MIB_CURRESTAB ) ; return SCTP_DISPOSITION_ABORT ; } if ( ( rcvd_serial == sent_serial ) && asoc -> addip_last_asconf ) { sctp_add_cmd_sf ( commands , SCTP_CMD_TIMER_STOP , SCTP_TO ( SCTP_EVENT_TIMEOUT_T4_RTO ) ) ; if ( ! sctp_process_asconf_ack ( ( struct sctp_association * ) asoc , asconf_ack ) ) { sctp_add_cmd_sf ( commands , SCTP_CMD_SEND_NEXT_ASCONF , SCTP_NULL ( ) ) ; return SCTP_DISPOSITION_CONSUME ; } abort = sctp_make_abort ( asoc , asconf_ack , sizeof ( sctp_errhdr_t ) ) ; if ( abort ) { sctp_init_cause ( abort , SCTP_ERROR_RSRC_LOW , 0 ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_REPLY , SCTP_CHUNK ( abort ) ) ; } sctp_add_cmd_sf ( commands , SCTP_CMD_DISCARD_PACKET , SCTP_NULL ( ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_SET_SK_ERR , SCTP_ERROR ( ECONNABORTED ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_ASSOC_FAILED , SCTP_PERR ( SCTP_ERROR_ASCONF_ACK ) ) ; SCTP_INC_STATS ( net , SCTP_MIB_ABORTEDS ) ; SCTP_DEC_STATS ( net , SCTP_MIB_CURRESTAB ) ; return SCTP_DISPOSITION_ABORT ; } return SCTP_DISPOSITION_DISCARD ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( asoc , asconf_ack , false , <S2SV_ModEnd> & err_param )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10375\n\n```\nCWE-119 void queue_push ( register Queue * qp , size_t extra_length , char const * info ) { register char * cp ; size_t memory_length ; size_t available_length ; size_t begin_length ; size_t n_begin ; size_t q_length ; if ( ! extra_length ) return ; memory_length = qp -> d_memory_end - qp -> d_memory ; q_length = qp -> d_read <= qp -> d_write ? ( size_t ) ( qp -> d_write - qp -> d_read ) : memory_length - ( qp -> d_read - qp -> d_write ) ; available_length = memory_length - q_length - 1 ; if ( message_show ( MSG_INFO ) ) message ( \"push_front<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>`%s\\'\" , ( unsigned ) extra_length , info ) ; if ( extra_length > available_length ) { <S2SV_StartBug> memory_length += extra_length - available_length + BLOCK_QUEUE ; <S2SV_EndBug> cp = new_memory ( memory_length , sizeof ( char ) ) ; if ( message_show ( MSG_INFO ) ) message ( \"Reallocating<S2SV_blank>queue<S2SV_blank>at<S2SV_blank>%p<S2SV_blank>to<S2SV_blank>%p\" , qp -> d_memory , cp ) ; if ( qp -> d_read > qp -> d_write ) { size_t tail_len = qp -> d_memory_end - qp -> d_read ; memcpy ( cp , qp -> d_read , tail_len ) ; memcpy ( cp + tail_len , qp -> d_memory , ( size_t ) ( qp -> d_write - qp -> d_memory ) ) ; qp -> d_write = cp + q_length ; qp -> d_read = cp ; } else { <S2SV_StartBug> memcpy ( cp , qp -> d_memory , memory_length ) ; <S2SV_EndBug> qp -> d_read = cp + ( qp -> d_read - qp -> d_memory ) ; qp -> d_write = cp + ( qp -> d_write - qp -> d_memory ) ; } free ( qp -> d_memory ) ; qp -> d_memory_end = cp + memory_length ; qp -> d_memory = cp ; } begin_length = qp -> d_read - qp -> d_memory ; n_begin = extra_length <= begin_length ? extra_length : begin_length ; memcpy ( qp -> d_read -= n_begin , info + extra_length - n_begin , n_begin ) ; if ( extra_length > begin_length ) { extra_length -= begin_length ; memcpy ( qp -> d_read = qp -> d_memory_end - extra_length , info , extra_length ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> available_length ) { size_t original_length = memory_length ; <S2SV_ModStart> -> d_memory , original_length <S2SV_ModEnd> ) ; qp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2375\n\n```\nCWE-189 static ssize_t __nfs4_get_acl_uncached ( struct inode * inode , void * buf , size_t buflen ) { struct page * pages [ NFS4ACL_MAXPAGES ] = { NULL , } ; struct nfs_getaclargs args = { . fh = NFS_FH ( inode ) , . acl_pages = pages , . acl_len = buflen , } ; struct nfs_getaclres res = { . acl_len = buflen , } ; void * resp_buf ; struct rpc_message msg = { . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_GETACL ] , . rpc_argp = & args , . rpc_resp = & res , } ; int ret = - ENOMEM , npages , i , acl_len = 0 ; npages = ( buflen + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; if ( npages == 0 ) npages = 1 ; for ( i = 0 ; i < npages ; i ++ ) { pages [ i ] = alloc_page ( GFP_KERNEL ) ; if ( ! pages [ i ] ) goto out_free ; } if ( npages > 1 ) { res . acl_scratch = alloc_page ( GFP_KERNEL ) ; if ( ! res . acl_scratch ) goto out_free ; } args . acl_len = npages * PAGE_SIZE ; args . acl_pgbase = 0 ; if ( buf == NULL ) res . acl_flags |= NFS4_ACL_LEN_REQUEST ; resp_buf = page_address ( pages [ 0 ] ) ; dprintk ( \"%s<S2SV_blank><S2SV_blank>buf<S2SV_blank>%p<S2SV_blank>buflen<S2SV_blank>%zu<S2SV_blank>npages<S2SV_blank>%d<S2SV_blank>args.acl_len<S2SV_blank>%zu\\\\n\" , __func__ , buf , buflen , npages , args . acl_len ) ; ret = nfs4_call_sync ( NFS_SERVER ( inode ) -> client , NFS_SERVER ( inode ) , & msg , & args . seq_args , & res . seq_res , 0 ) ; if ( ret ) goto out_free ; acl_len = res . acl_len - res . acl_data_offset ; if ( acl_len > args . acl_len ) nfs4_write_cached_acl ( inode , NULL , acl_len ) ; else nfs4_write_cached_acl ( inode , resp_buf + res . acl_data_offset , acl_len ) ; if ( buf ) { ret = - ERANGE ; if ( acl_len > buflen ) goto out_free ; _copy_from_pages ( buf , pages , res . acl_data_offset , <S2SV_StartBug> res . acl_len ) ; <S2SV_EndBug> } ret = acl_len ; out_free : for ( i = 0 ; i < npages ; i ++ ) if ( pages [ i ] ) __free_page ( pages [ i ] ) ; if ( res . acl_scratch ) __free_page ( res . acl_scratch ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . acl_data_offset , <S2SV_ModEnd> acl_len ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9907\n\n```\nCWE-20 static MagickBooleanType ReadDXT5 ( Image * image , DDSInfo * dds_info , ExceptionInfo * exception ) { DDSColors colors ; ssize_t j , y ; MagickSizeType alpha_bits ; PixelPacket * q ; register ssize_t i , x ; unsigned char a0 , a1 ; size_t alpha , bits , code , alpha_code ; unsigned short c0 , c1 ; for ( y = 0 ; y < ( ssize_t ) dds_info -> height ; y += 4 ) { for ( x = 0 ; x < ( ssize_t ) dds_info -> width ; x += 4 ) { <S2SV_StartBug> q = QueueAuthenticPixels ( image , x , y , Min ( 4 , dds_info -> width - x ) , <S2SV_EndBug> <S2SV_StartBug> Min ( 4 , dds_info -> height - y ) , exception ) ; <S2SV_EndBug> if ( q == ( PixelPacket * ) NULL ) return MagickFalse ; a0 = ( unsigned char ) ReadBlobByte ( image ) ; a1 = ( unsigned char ) ReadBlobByte ( image ) ; alpha_bits = ( MagickSizeType ) ReadBlobLSBLong ( image ) ; alpha_bits = alpha_bits | ( ( MagickSizeType ) ReadBlobLSBShort ( image ) << 32 ) ; c0 = ReadBlobLSBShort ( image ) ; c1 = ReadBlobLSBShort ( image ) ; bits = ReadBlobLSBLong ( image ) ; CalculateColors ( c0 , c1 , & colors , MagickTrue ) ; for ( j = 0 ; j < 4 ; j ++ ) { for ( i = 0 ; i < 4 ; i ++ ) { if ( ( x + i ) < ( ssize_t ) dds_info -> width && ( y + j ) < ( ssize_t ) dds_info -> height ) { code = ( bits >> ( ( 4 * j + i ) * 2 ) ) & 0x3 ; SetPixelRed ( q , ScaleCharToQuantum ( colors . r [ code ] ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( colors . g [ code ] ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( colors . b [ code ] ) ) ; alpha_code = ( size_t ) ( alpha_bits >> ( 3 * ( 4 * j + i ) ) ) & 0x7 ; if ( alpha_code == 0 ) alpha = a0 ; else if ( alpha_code == 1 ) alpha = a1 ; else if ( a0 > a1 ) alpha = ( ( 8 - alpha_code ) * a0 + ( alpha_code - 1 ) * a1 ) / 7 ; else if ( alpha_code == 6 ) alpha = 0 ; else if ( alpha_code == 7 ) alpha = 255 ; else alpha = ( ( ( 6 - alpha_code ) * a0 + ( alpha_code - 1 ) * a1 ) / 5 ) ; SetPixelAlpha ( q , ScaleCharToQuantum ( ( unsigned char ) alpha ) ) ; q ++ ; } } } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) return MagickFalse ; } } <S2SV_StartBug> SkipDXTMipmaps ( image , dds_info , 16 ) ; <S2SV_EndBug> return MagickTrue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , y , MagickMin <S2SV_ModEnd> ( 4 , <S2SV_ModStart> x ) , MagickMin <S2SV_ModEnd> ( 4 , <S2SV_ModStart> ; } } return ( <S2SV_ModStart> dds_info , 16 , exception ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7613\n\n```\nCWE-362 int ipc_addid ( struct ipc_ids * ids , struct kern_ipc_perm * new , int size ) { kuid_t euid ; kgid_t egid ; int id ; int next_id = ids -> next_id ; if ( size > IPCMNI ) size = IPCMNI ; if ( ids -> in_use >= size ) return - ENOSPC ; idr_preload ( GFP_KERNEL ) ; spin_lock_init ( & new -> lock ) ; new -> deleted = false ; rcu_read_lock ( ) ; spin_lock ( & new -> lock ) ; <S2SV_StartBug> id = idr_alloc ( & ids -> ipcs_idr , new , <S2SV_EndBug> ( next_id < 0 ) ? 0 : ipcid_to_idx ( next_id ) , 0 , GFP_NOWAIT ) ; idr_preload_end ( ) ; if ( id < 0 ) { spin_unlock ( & new -> lock ) ; rcu_read_unlock ( ) ; return id ; } ids -> in_use ++ ; <S2SV_StartBug> current_euid_egid ( & euid , & egid ) ; <S2SV_EndBug> new -> cuid = new -> uid = euid ; new -> gid = new -> cgid = egid ; if ( next_id < 0 ) { new -> seq = ids -> seq ++ ; if ( ids -> seq > IPCID_SEQ_MAX ) ids -> seq = 0 ; } else { new -> seq = ipcid_to_seqx ( next_id ) ; ids -> next_id = - 1 ; } new -> id = ipc_buildid ( id , new -> seq ) ; return id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lock ) ; current_euid_egid ( & euid , & egid ) ; new -> cuid = new -> uid = euid ; new -> gid = new -> cgid = egid ; <S2SV_ModStart> in_use ++ ; <S2SV_ModEnd> if ( next_id\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-129(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9162\n\n```\nCWE-129 int snmp_helper ( void * context , size_t hdrlen , unsigned char tag , const void * data , size_t datalen ) { struct snmp_ctx * ctx = ( struct snmp_ctx * ) context ; <S2SV_StartBug> __be32 * pdata = ( __be32 * ) data ; <S2SV_EndBug> if ( * pdata == ctx -> from ) { pr_debug ( \"%s:<S2SV_blank>%pI4<S2SV_blank>to<S2SV_blank>%pI4\\\\n\" , __func__ , ( void * ) & ctx -> from , ( void * ) & ctx -> to ) ; if ( * ctx -> check ) fast_csum ( ctx , ( unsigned char * ) data - ctx -> begin ) ; * pdata = ctx -> to ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; __be32 * pdata ; if ( datalen != 4 ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3359\n\n```\nCWE-119 static void dma_rx ( struct b43_dmaring * ring , int * slot ) { const struct b43_dma_ops * ops = ring -> ops ; struct b43_dmadesc_generic * desc ; struct b43_dmadesc_meta * meta ; struct b43_rxhdr_fw4 * rxhdr ; struct sk_buff * skb ; u16 len ; int err ; dma_addr_t dmaaddr ; desc = ops -> idx2desc ( ring , * slot , & meta ) ; sync_descbuffer_for_cpu ( ring , meta -> dmaaddr , ring -> rx_buffersize ) ; skb = meta -> skb ; rxhdr = ( struct b43_rxhdr_fw4 * ) skb -> data ; len = le16_to_cpu ( rxhdr -> frame_len ) ; if ( len == 0 ) { int i = 0 ; do { udelay ( 2 ) ; barrier ( ) ; len = le16_to_cpu ( rxhdr -> frame_len ) ; } while ( len == 0 && i ++ < 5 ) ; if ( unlikely ( len == 0 ) ) { dmaaddr = meta -> dmaaddr ; goto drop_recycle_buffer ; } } if ( unlikely ( b43_rx_buffer_is_poisoned ( ring , skb ) ) ) { b43dbg ( ring -> dev -> wl , \"DMA<S2SV_blank>RX:<S2SV_blank>Dropping<S2SV_blank>poisoned<S2SV_blank>buffer.\\\\n\" ) ; dmaaddr = meta -> dmaaddr ; goto drop_recycle_buffer ; } <S2SV_StartBug> if ( unlikely ( len > ring -> rx_buffersize ) ) { <S2SV_EndBug> int cnt = 0 ; s32 tmp = len ; while ( 1 ) { desc = ops -> idx2desc ( ring , * slot , & meta ) ; b43_poison_rx_buffer ( ring , meta -> skb ) ; sync_descbuffer_for_device ( ring , meta -> dmaaddr , ring -> rx_buffersize ) ; * slot = next_slot ( ring , * slot ) ; cnt ++ ; tmp -= ring -> rx_buffersize ; if ( tmp <= 0 ) break ; } b43err ( ring -> dev -> wl , \"DMA<S2SV_blank>RX<S2SV_blank>buffer<S2SV_blank>too<S2SV_blank>small<S2SV_blank>\" \"(len:<S2SV_blank>%u,<S2SV_blank>buffer:<S2SV_blank>%u,<S2SV_blank>nr-dropped:<S2SV_blank>%d)\\\\n\" , len , ring -> rx_buffersize , cnt ) ; goto drop ; } dmaaddr = meta -> dmaaddr ; err = setup_rx_descbuffer ( ring , desc , meta , GFP_ATOMIC ) ; if ( unlikely ( err ) ) { b43dbg ( ring -> dev -> wl , \"DMA<S2SV_blank>RX:<S2SV_blank>setup_rx_descbuffer()<S2SV_blank>failed\\\\n\" ) ; goto drop_recycle_buffer ; } unmap_descbuffer ( ring , dmaaddr , ring -> rx_buffersize , 0 ) ; skb_put ( skb , len + ring -> frameoffset ) ; skb_pull ( skb , ring -> frameoffset ) ; b43_rx ( ring -> dev , skb , rxhdr ) ; drop : return ; drop_recycle_buffer : b43_poison_rx_buffer ( ring , skb ) ; sync_descbuffer_for_device ( ring , dmaaddr , ring -> rx_buffersize ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unlikely ( len + ring -> frameoffset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11328\n\n```\nCWE-119 int module_load ( YR_SCAN_CONTEXT * context , YR_OBJECT * module_object , void * module_data , size_t module_data_size ) { set_integer ( 1 , module_object , \"constants.one\" ) ; set_integer ( 2 , module_object , \"constants.two\" ) ; set_string ( \"foo\" , module_object , \"constants.foo\" ) ; set_string ( \"\" , module_object , \"constants.empty\" ) ; set_integer ( 1 , module_object , \"struct_array[1].i\" ) ; set_integer ( 0 , module_object , \"integer_array[%i]\" , 0 ) ; set_integer ( 1 , module_object , \"integer_array[%i]\" , 1 ) ; set_integer ( 2 , module_object , \"integer_array[%i]\" , 2 ) ; <S2SV_StartBug> set_string ( \"foo\" , module_object , \"string_array[%i]\" , 0 ) ; <S2SV_EndBug> set_string ( \"bar\" , module_object , \"string_array[%i]\" , 1 ) ; set_string ( \"baz\" , module_object , \"string_array[%i]\" , 2 ) ; set_sized_string ( \"foo\\\\0bar\" , 7 , module_object , \"string_array[%i]\" , 3 ) ; set_string ( \"foo\" , module_object , \"string_dict[%s]\" , \"foo\" ) ; set_string ( \"bar\" , module_object , \"string_dict[\\\\\"bar\\\\\"]\" ) ; set_string ( \"foo\" , module_object , \"struct_dict[%s].s\" , \"foo\" ) ; set_integer ( 1 , module_object , \"struct_dict[%s].i\" , \"foo\" ) ; return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) ; set_integer ( 256 , module_object , \"integer_array[%i]\" , 256 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 static void perf_event_for_each ( struct perf_event * event , void ( * func ) ( struct perf_event * ) ) { struct perf_event_context * ctx = event -> ctx ; struct perf_event * sibling ; <S2SV_StartBug> WARN_ON_ONCE ( ctx -> parent_ctx ) ; <S2SV_EndBug> mutex_lock ( & ctx -> mutex ) ; event = event -> group_leader ; perf_event_for_each_child ( event , func ) ; list_for_each_entry ( sibling , & event -> sibling_list , group_entry ) perf_event_for_each_child ( sibling , func ) ; <S2SV_StartBug> mutex_unlock ( & ctx -> mutex ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * sibling ; lockdep_assert_held <S2SV_ModEnd> ( & ctx <S2SV_ModStart> func ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15090\n\n```\nCWE-125 void qedi_dbg_warn ( struct qedi_dbg_ctx * qedi , const char * func , u32 line , const char * fmt , ... ) { va_list va ; <S2SV_StartBug> struct va_format vaf ; <S2SV_EndBug> char nfunc [ 32 ] ; memset ( nfunc , 0 , sizeof ( nfunc ) ) ; memcpy ( nfunc , func , sizeof ( nfunc ) - 1 ) ; va_start ( va , fmt ) ; vaf . fmt = fmt ; vaf . va = & va ; if ( ! ( qedi_dbg_log & QEDI_LOG_WARN ) ) goto ret ; if ( likely ( qedi ) && likely ( qedi -> pdev ) ) pr_warn ( \"[%s]:[%s:%d]:%d:<S2SV_blank>%pV\" , dev_name ( & qedi -> pdev -> dev ) , <S2SV_StartBug> nfunc , line , qedi -> host_no , & vaf ) ; <S2SV_EndBug> else <S2SV_StartBug> pr_warn ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , nfunc , line , & vaf ) ; <S2SV_EndBug> ret : va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct va_format vaf <S2SV_ModEnd> ; va_start ( <S2SV_ModStart> dev ) , func <S2SV_ModEnd> , line , <S2SV_ModStart> ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , func <S2SV_ModEnd> , line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7529\n\n```\nCWE-125 static MagickBooleanType load_tile ( Image * image , Image * tile_image , XCFDocInfo * inDocInfo , XCFLayerInfo * inLayerInfo , size_t data_length , ExceptionInfo * exception ) { ssize_t y ; register ssize_t x ; register Quantum * q ; ssize_t count ; unsigned char * graydata ; XCFPixelInfo * xcfdata , * xcfodata ; <S2SV_StartBug> xcfdata = ( XCFPixelInfo * ) AcquireQuantumMemory ( data_length , sizeof ( * xcfdata ) ) ; <S2SV_EndBug> if ( xcfdata == ( XCFPixelInfo * ) NULL ) ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; xcfodata = xcfdata ; graydata = ( unsigned char * ) xcfdata ; count = ReadBlob ( image , data_length , ( unsigned char * ) xcfdata ) ; if ( count != ( ssize_t ) data_length ) ThrowBinaryException ( CorruptImageError , \"NotEnoughPixelData\" , image -> filename ) ; for ( y = 0 ; y < ( ssize_t ) tile_image -> rows ; y ++ ) { q = GetAuthenticPixels ( tile_image , 0 , y , tile_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; if ( inDocInfo -> image_type == GIMP_GRAY ) { for ( x = 0 ; x < ( ssize_t ) tile_image -> columns ; x ++ ) { SetPixelGray ( tile_image , ScaleCharToQuantum ( * graydata ) , q ) ; SetPixelAlpha ( tile_image , ScaleCharToQuantum ( ( unsigned char ) inLayerInfo -> alpha ) , q ) ; graydata ++ ; q += GetPixelChannels ( tile_image ) ; } } else if ( inDocInfo -> image_type == GIMP_RGB ) { for ( x = 0 ; x < ( ssize_t ) tile_image -> columns ; x ++ ) { SetPixelRed ( tile_image , ScaleCharToQuantum ( xcfdata -> red ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( xcfdata -> green ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( xcfdata -> blue ) , q ) ; SetPixelAlpha ( tile_image , xcfdata -> alpha == 255U ? TransparentAlpha : ScaleCharToQuantum ( ( unsigned char ) inLayerInfo -> alpha ) , q ) ; xcfdata ++ ; q += GetPixelChannels ( tile_image ) ; } } if ( SyncAuthenticPixels ( tile_image , exception ) == MagickFalse ) break ; } xcfodata = ( XCFPixelInfo * ) RelinquishMagickMemory ( xcfodata ) ; return MagickTrue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) AcquireQuantumMemory ( MagickMax ( data_length , tile_image -> columns * tile_image -> rows ) <S2SV_ModEnd> , sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15473\n\n```\nCWE-362 static int userauth_pubkey ( struct ssh * ssh ) { Authctxt * authctxt = ssh -> authctxt ; struct passwd * pw = authctxt -> pw ; <S2SV_StartBug> struct sshbuf * b ; <S2SV_EndBug> struct sshkey * key = NULL ; <S2SV_StartBug> char * pkalg , * userstyle = NULL , * key_s = NULL , * ca_s = NULL ; <S2SV_EndBug> <S2SV_StartBug> u_char * pkblob , * sig , have_sig ; <S2SV_EndBug> size_t blen , slen ; int r , pktype ; int authenticated = 0 ; struct sshauthopt * authopts = NULL ; <S2SV_StartBug> if ( ! authctxt -> valid ) { <S2SV_EndBug> debug2 ( \"%s:<S2SV_blank>disabled<S2SV_blank>because<S2SV_blank>of<S2SV_blank>invalid<S2SV_blank>user\" , __func__ ) ; return 0 ; } if ( ( r = sshpkt_get_u8 ( ssh , & have_sig ) ) != 0 || ( r = sshpkt_get_cstring ( ssh , & pkalg , NULL ) ) != 0 || ( r = sshpkt_get_string ( ssh , & pkblob , & blen ) ) != 0 ) fatal ( \"%s:<S2SV_blank>parse<S2SV_blank>request<S2SV_blank>failed:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; pktype = sshkey_type_from_name ( pkalg ) ; if ( pktype == KEY_UNSPEC ) { verbose ( \"%s:<S2SV_blank>unsupported<S2SV_blank>public<S2SV_blank>key<S2SV_blank>algorithm:<S2SV_blank>%s\" , __func__ , pkalg ) ; goto done ; } if ( ( r = sshkey_from_blob ( pkblob , blen , & key ) ) != 0 ) { error ( \"%s:<S2SV_blank>could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>key:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; goto done ; } if ( key == NULL ) { error ( \"%s:<S2SV_blank>cannot<S2SV_blank>decode<S2SV_blank>key:<S2SV_blank>%s\" , __func__ , pkalg ) ; goto done ; } if ( key -> type != pktype ) { error ( \"%s:<S2SV_blank>type<S2SV_blank>mismatch<S2SV_blank>for<S2SV_blank>decoded<S2SV_blank>key<S2SV_blank>\" \"(received<S2SV_blank>%d,<S2SV_blank>expected<S2SV_blank>%d)\" , __func__ , key -> type , pktype ) ; goto done ; } if ( sshkey_type_plain ( key -> type ) == KEY_RSA && ( ssh -> compat & SSH_BUG_RSASIGMD5 ) != 0 ) { logit ( \"Refusing<S2SV_blank>RSA<S2SV_blank>key<S2SV_blank>because<S2SV_blank>client<S2SV_blank>uses<S2SV_blank>unsafe<S2SV_blank>\" \"signature<S2SV_blank>scheme\" ) ; goto done ; } if ( auth2_key_already_used ( authctxt , key ) ) { logit ( \"refusing<S2SV_blank>previously-used<S2SV_blank>%s<S2SV_blank>key\" , sshkey_type ( key ) ) ; goto done ; } if ( match_pattern_list ( pkalg , options . pubkey_key_types , 0 ) != 1 ) { logit ( \"%s:<S2SV_blank>key<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>in<S2SV_blank>PubkeyAcceptedKeyTypes\" , __func__ , sshkey_ssh_name ( key ) ) ; goto done ; } key_s = format_key ( key ) ; if ( sshkey_is_cert ( key ) ) ca_s = format_key ( key -> cert -> signature_key ) ; if ( have_sig ) { debug3 ( \"%s:<S2SV_blank>have<S2SV_blank>%s<S2SV_blank>signature<S2SV_blank>for<S2SV_blank>%s%s%s\" , __func__ , pkalg , key_s , ca_s == NULL ? \"\" : \"<S2SV_blank>CA<S2SV_blank>\" , ca_s == NULL ? \"\" : ca_s ) ; if ( ( r = sshpkt_get_string ( ssh , & sig , & slen ) ) != 0 || ( r = sshpkt_get_end ( ssh ) ) != 0 ) fatal ( \"%s:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; if ( ( b = sshbuf_new ( ) ) == NULL ) fatal ( \"%s:<S2SV_blank>sshbuf_new<S2SV_blank>failed\" , __func__ ) ; if ( ssh -> compat & SSH_OLD_SESSIONID ) { if ( ( r = sshbuf_put ( b , session_id2 , session_id2_len ) ) != 0 ) fatal ( \"%s:<S2SV_blank>sshbuf_put<S2SV_blank>session<S2SV_blank>id:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; } else { if ( ( r = sshbuf_put_string ( b , session_id2 , session_id2_len ) ) != 0 ) fatal ( \"%s:<S2SV_blank>sshbuf_put_string<S2SV_blank>session<S2SV_blank>id:<S2SV_blank>%s\" , <S2SV_StartBug> __func__ , ssh_err ( r ) ) ; <S2SV_EndBug> } xasprintf ( & userstyle , \"%s%s%s\" , authctxt -> user , authctxt -> style ? \":\" : \"\" , authctxt -> style ? authctxt -> style : \"\" ) ; if ( ( r = sshbuf_put_u8 ( b , SSH2_MSG_USERAUTH_REQUEST ) ) != 0 || ( r = sshbuf_put_cstring ( b , userstyle ) ) != 0 || ( r = sshbuf_put_cstring ( b , authctxt -> service ) ) != 0 || ( r = sshbuf_put_cstring ( b , \"publickey\" ) ) != 0 || ( r = sshbuf_put_u8 ( b , have_sig ) ) != 0 || ( r = sshbuf_put_cstring ( b , pkalg ) != 0 ) || ( r = sshbuf_put_string ( b , pkblob , blen ) ) != 0 ) fatal ( \"%s:<S2SV_blank>build<S2SV_blank>packet<S2SV_blank>failed:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; # ifdef DEBUG_PK sshbuf_dump ( b , stderr ) ; # endif authenticated = 0 ; if ( PRIVSEP ( user_key_allowed ( ssh , pw , key , 1 , & authopts ) ) && PRIVSEP ( sshkey_verify ( key , sig , slen , sshbuf_ptr ( b ) , sshbuf_len ( b ) , ( ssh -> compat & SSH_BUG_SIGTYPE ) == 0 ? pkalg : NULL , ssh -> compat ) ) == 0 ) { authenticated = 1 ; } sshbuf_free ( b ) ; <S2SV_StartBug> free ( sig ) ; <S2SV_EndBug> auth2_record_key ( authctxt , authenticated , key ) ; } else { debug ( \"%s:<S2SV_blank>test<S2SV_blank>pkalg<S2SV_blank>%s<S2SV_blank>pkblob<S2SV_blank>%s%s%s\" , __func__ , pkalg , key_s , ca_s == NULL ? \"\" : \"<S2SV_blank>CA<S2SV_blank>\" , ca_s == NULL ? \"\" : ca_s ) ; if ( ( r = sshpkt_get_end ( ssh ) ) != 0 ) <S2SV_StartBug> fatal ( \"%s:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; <S2SV_EndBug> if ( PRIVSEP ( user_key_allowed ( ssh , pw , key , 0 , NULL ) ) ) { if ( ( r = sshpkt_start ( ssh , SSH2_MSG_USERAUTH_PK_OK ) ) != 0 || ( r = sshpkt_put_cstring ( ssh , pkalg ) ) != 0 || ( r = sshpkt_put_string ( ssh , pkblob , blen ) ) != 0 || ( r = sshpkt_send ( ssh ) ) != 0 || ( r = ssh_packet_write_wait ( ssh ) ) != 0 ) fatal ( \"%s:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; authctxt -> postponed = 1 ; } } done : if ( authenticated == 1 && auth_activate_options ( ssh , authopts ) != 0 ) { debug ( \"%s:<S2SV_blank>key<S2SV_blank>options<S2SV_blank>inconsistent<S2SV_blank>with<S2SV_blank>existing\" , __func__ ) ; authenticated = 0 ; } debug2 ( \"%s:<S2SV_blank>authenticated<S2SV_blank>%d<S2SV_blank>pkalg<S2SV_blank>%s\" , __func__ , authenticated , pkalg ) ; sshauthopt_free ( authopts ) ; sshkey_free ( key ) ; free ( userstyle ) ; free ( pkalg ) ; free ( pkblob ) ; free ( key_s ) ; free ( ca_s ) ; <S2SV_StartBug> return authenticated ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sshbuf * b = NULL <S2SV_ModStart> char * pkalg = NULL <S2SV_ModStart> u_char * pkblob = NULL <S2SV_ModStart> , * sig = NULL <S2SV_ModStart> ; if ( <S2SV_ModEnd> ( r = <S2SV_ModStart> r ) ) ; } if ( ! authctxt -> valid || authctxt -> user == NULL ) { debug2 ( \"%s:<S2SV_blank>disabled<S2SV_blank>because<S2SV_blank>of<S2SV_blank>invalid<S2SV_blank>user\" , __func__ ) ; goto done <S2SV_ModStart> b ) ; <S2SV_ModEnd> auth2_record_key ( authctxt <S2SV_ModStart> ) ) ; if ( ! authctxt -> valid || authctxt -> user == NULL ) { debug2 ( \"%s:<S2SV_blank>disabled<S2SV_blank>because<S2SV_blank>of<S2SV_blank>invalid<S2SV_blank>user\" , __func__ ) ; goto done ; } <S2SV_ModStart> ca_s ) ; free ( sig ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19645\n\n```\nCWE-674 static void renameTableFunc ( sqlite3_context * context , int NotUsed , sqlite3_value * * argv ) { sqlite3 * db = sqlite3_context_db_handle ( context ) ; const char * zDb = ( const char * ) sqlite3_value_text ( argv [ 0 ] ) ; const char * zInput = ( const char * ) sqlite3_value_text ( argv [ 3 ] ) ; const char * zOld = ( const char * ) sqlite3_value_text ( argv [ 4 ] ) ; const char * zNew = ( const char * ) sqlite3_value_text ( argv [ 5 ] ) ; int bTemp = sqlite3_value_int ( argv [ 6 ] ) ; UNUSED_PARAMETER ( NotUsed ) ; if ( zInput && zOld && zNew ) { Parse sParse ; int rc ; int bQuote = 1 ; RenameCtx sCtx ; Walker sWalker ; # ifndef SQLITE_OMIT_AUTHORIZATION sqlite3_xauth xAuth = db -> xAuth ; db -> xAuth = 0 ; # endif sqlite3BtreeEnterAll ( db ) ; memset ( & sCtx , 0 , sizeof ( RenameCtx ) ) ; sCtx . pTab = sqlite3FindTable ( db , zOld , zDb ) ; memset ( & sWalker , 0 , sizeof ( Walker ) ) ; sWalker . pParse = & sParse ; sWalker . xExprCallback = renameTableExprCb ; sWalker . xSelectCallback = renameTableSelectCb ; sWalker . u . pRename = & sCtx ; rc = renameParseSql ( & sParse , zDb , 1 , db , zInput , bTemp ) ; if ( rc == SQLITE_OK ) { int isLegacy = ( db -> flags & SQLITE_LegacyAlter ) ; if ( sParse . pNewTable ) { Table * pTab = sParse . pNewTable ; if ( pTab -> pSelect ) { if ( isLegacy == 0 ) { <S2SV_StartBug> NameContext sNC ; <S2SV_EndBug> memset ( & sNC , 0 , sizeof ( sNC ) ) ; <S2SV_StartBug> sNC . pParse = & sParse ; <S2SV_EndBug> sqlite3SelectPrep ( & sParse , pTab -> pSelect , & sNC ) ; if ( sParse . nErr ) rc = sParse . rc ; sqlite3WalkSelect ( & sWalker , pTab -> pSelect ) ; } } else { # ifndef SQLITE_OMIT_FOREIGN_KEY if ( isLegacy == 0 || ( db -> flags & SQLITE_ForeignKeys ) ) { FKey * pFKey ; for ( pFKey = pTab -> pFKey ; pFKey ; pFKey = pFKey -> pNextFrom ) { if ( sqlite3_stricmp ( pFKey -> zTo , zOld ) == 0 ) { renameTokenFind ( & sParse , & sCtx , ( void * ) pFKey -> zTo ) ; } } } # endif if ( sqlite3_stricmp ( zOld , pTab -> zName ) == 0 ) { sCtx . pTab = pTab ; if ( isLegacy == 0 ) { sqlite3WalkExprList ( & sWalker , pTab -> pCheck ) ; } renameTokenFind ( & sParse , & sCtx , pTab -> zName ) ; } } } else if ( sParse . pNewIndex ) { renameTokenFind ( & sParse , & sCtx , sParse . pNewIndex -> zName ) ; if ( isLegacy == 0 ) { sqlite3WalkExpr ( & sWalker , sParse . pNewIndex -> pPartIdxWhere ) ; } } # ifndef SQLITE_OMIT_TRIGGER else { Trigger * pTrigger = sParse . pNewTrigger ; TriggerStep * pStep ; if ( 0 == sqlite3_stricmp ( sParse . pNewTrigger -> table , zOld ) && sCtx . pTab -> pSchema == pTrigger -> pTabSchema ) { renameTokenFind ( & sParse , & sCtx , sParse . pNewTrigger -> table ) ; } if ( isLegacy == 0 ) { rc = renameResolveTrigger ( & sParse , bTemp ? 0 : zDb ) ; if ( rc == SQLITE_OK ) { renameWalkTrigger ( & sWalker , pTrigger ) ; for ( pStep = pTrigger -> step_list ; pStep ; pStep = pStep -> pNext ) { if ( pStep -> zTarget && 0 == sqlite3_stricmp ( pStep -> zTarget , zOld ) ) { renameTokenFind ( & sParse , & sCtx , pStep -> zTarget ) ; } } } } } # endif } if ( rc == SQLITE_OK ) { rc = renameEditSql ( context , & sCtx , zInput , zNew , bQuote ) ; } if ( rc != SQLITE_OK ) { if ( sParse . zErrMsg ) { renameColumnParseError ( context , 0 , argv [ 1 ] , argv [ 2 ] , & sParse ) ; } else { sqlite3_result_error_code ( context , rc ) ; } } renameParseCleanup ( & sParse ) ; renameTokenFree ( db , sCtx . pList ) ; sqlite3BtreeLeaveAll ( db ) ; # ifndef SQLITE_OMIT_AUTHORIZATION db -> xAuth = xAuth ; # endif } return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { Select * pSelect = pTab -> pSelect ; <S2SV_ModStart> = & sParse ; assert ( pSelect -> selFlags & SF_View ) ; pSelect -> selFlags &= ~ SF_View\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 STATIC int xfs_attr_node_addname ( xfs_da_args_t * args ) { xfs_da_state_t * state ; xfs_da_state_blk_t * blk ; xfs_inode_t * dp ; xfs_mount_t * mp ; int committed , retval , error ; trace_xfs_attr_node_addname ( args ) ; dp = args -> dp ; mp = dp -> i_mount ; restart : state = xfs_da_state_alloc ( ) ; state -> args = args ; state -> mp = mp ; state -> blocksize = state -> mp -> m_sb . sb_blocksize ; state -> node_ents = state -> mp -> m_attr_node_ents ; error = xfs_da3_node_lookup_int ( state , & retval ) ; if ( error ) goto out ; blk = & state -> path . blk [ state -> path . active - 1 ] ; ASSERT ( blk -> magic == XFS_ATTR_LEAF_MAGIC ) ; if ( ( args -> flags & ATTR_REPLACE ) && ( retval == ENOATTR ) ) { goto out ; } else if ( retval == EEXIST ) { if ( args -> flags & ATTR_CREATE ) goto out ; trace_xfs_attr_node_replace ( args ) ; args -> op_flags |= XFS_DA_OP_RENAME ; args -> blkno2 = args -> blkno ; args -> index2 = args -> index ; args -> rmtblkno2 = args -> rmtblkno ; args -> rmtblkcnt2 = args -> rmtblkcnt ; <S2SV_StartBug> args -> rmtblkno = 0 ; <S2SV_EndBug> <S2SV_StartBug> args -> rmtblkcnt = 0 ; <S2SV_EndBug> } retval = xfs_attr3_leaf_add ( blk -> bp , state -> args ) ; if ( retval == ENOSPC ) { if ( state -> path . active == 1 ) { xfs_da_state_free ( state ) ; state = NULL ; xfs_bmap_init ( args -> flist , args -> firstblock ) ; error = xfs_attr3_leaf_to_node ( args ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; goto out ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) goto out ; goto restart ; } xfs_bmap_init ( args -> flist , args -> firstblock ) ; error = xfs_da3_split ( state ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; goto out ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; } else { xfs_da3_fixhashpath ( state , & state -> path ) ; } xfs_da_state_free ( state ) ; state = NULL ; error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) goto out ; if ( args -> rmtblkno > 0 ) { error = xfs_attr_rmtval_set ( args ) ; if ( error ) return ( error ) ; } if ( args -> op_flags & XFS_DA_OP_RENAME ) { error = xfs_attr3_leaf_flipflags ( args ) ; if ( error ) goto out ; args -> index = args -> index2 ; args -> blkno = args -> blkno2 ; args -> rmtblkno = args -> rmtblkno2 ; <S2SV_StartBug> args -> rmtblkcnt = args -> rmtblkcnt2 ; <S2SV_EndBug> if ( args -> rmtblkno ) { error = xfs_attr_rmtval_remove ( args ) ; if ( error ) return ( error ) ; } args -> flags |= XFS_ATTR_INCOMPLETE ; state = xfs_da_state_alloc ( ) ; state -> args = args ; state -> mp = mp ; state -> blocksize = state -> mp -> m_sb . sb_blocksize ; state -> node_ents = state -> mp -> m_attr_node_ents ; state -> inleaf = 0 ; error = xfs_da3_node_lookup_int ( state , & retval ) ; if ( error ) goto out ; blk = & state -> path . blk [ state -> path . active - 1 ] ; ASSERT ( blk -> magic == XFS_ATTR_LEAF_MAGIC ) ; error = xfs_attr3_leaf_remove ( blk -> bp , args ) ; xfs_da3_fixhashpath ( state , & state -> path ) ; if ( retval && ( state -> path . active > 1 ) ) { xfs_bmap_init ( args -> flist , args -> firstblock ) ; error = xfs_da3_join ( state ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; goto out ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; } error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) goto out ; } else if ( args -> rmtblkno > 0 ) { error = xfs_attr3_leaf_clearflag ( args ) ; if ( error ) goto out ; } retval = error = 0 ; out : if ( state ) xfs_da_state_free ( state ) ; if ( error ) return ( error ) ; return ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; args -> rmtvaluelen2 = args -> rmtvaluelen ; args -> <S2SV_ModStart> args -> rmtblkcnt = 0 ; args -> rmtvaluelen <S2SV_ModStart> args -> rmtblkcnt2 ; args -> rmtvaluelen = args -> rmtvaluelen2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1789\n\n```\nCWE-119 int X509_cmp_time ( const ASN1_TIME * ctm , time_t * cmp_time ) { char * str ; ASN1_TIME atm ; long offset ; char buff1 [ 24 ] , buff2 [ 24 ] , * p ; <S2SV_StartBug> int i , j ; <S2SV_EndBug> p = buff1 ; <S2SV_StartBug> i = ctm -> length ; <S2SV_EndBug> str = ( char * ) ctm -> data ; if ( ctm -> type == V_ASN1_UTCTIME ) { <S2SV_StartBug> if ( ( i < 11 ) || ( i > 17 ) ) <S2SV_EndBug> return 0 ; memcpy ( p , str , 10 ) ; p += 10 ; str += 10 ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> if ( i < 13 ) <S2SV_EndBug> return 0 ; memcpy ( p , str , 12 ) ; p += 12 ; str += 12 ; <S2SV_StartBug> } <S2SV_EndBug> if ( ( * str == 'Z' ) || ( * str == '-' ) || ( * str == '+' ) ) { * ( p ++ ) = '0' ; * ( p ++ ) = '0' ; } else { <S2SV_StartBug> * ( p ++ ) = * ( str ++ ) ; <S2SV_EndBug> * ( p ++ ) = * ( str ++ ) ; if ( * str == '.' ) { str ++ ; <S2SV_StartBug> while ( ( * str >= '0' ) && ( * str <= '9' ) ) <S2SV_EndBug> str ++ ; } } * ( p ++ ) = 'Z' ; * ( p ++ ) = '\\\\0' ; <S2SV_StartBug> if ( * str == 'Z' ) <S2SV_EndBug> offset = 0 ; <S2SV_StartBug> else { <S2SV_EndBug> <S2SV_StartBug> if ( ( * str != '+' ) && ( * str != '-' ) ) <S2SV_EndBug> return 0 ; offset = ( ( str [ 1 ] - '0' ) * 10 + ( str [ 2 ] - '0' ) ) * 60 ; offset += ( str [ 3 ] - '0' ) * 10 + ( str [ 4 ] - '0' ) ; if ( * str == '-' ) offset = - offset ; } atm . type = ctm -> type ; atm . flags = 0 ; atm . length = sizeof ( buff2 ) ; atm . data = ( unsigned char * ) buff2 ; if ( X509_time_adj ( & atm , offset * 60 , cmp_time ) == NULL ) return 0 ; if ( ctm -> type == V_ASN1_UTCTIME ) { i = ( buff1 [ 0 ] - '0' ) * 10 + ( buff1 [ 1 ] - '0' ) ; if ( i < 50 ) i += 100 ; j = ( buff2 [ 0 ] - '0' ) * 10 + ( buff2 [ 1 ] - '0' ) ; if ( j < 50 ) j += 100 ; if ( i < j ) return - 1 ; if ( i > j ) return 1 ; } i = strcmp ( buff1 , buff2 ) ; if ( i == 0 ) return - 1 ; else return i ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i , j , remaining <S2SV_ModStart> = buff1 ; remaining <S2SV_ModEnd> = ctm -> <S2SV_ModStart> V_ASN1_UTCTIME ) { int min_length = sizeof ( \"YYMMDDHHMMZ\" ) - 1 ; int max_length = sizeof ( \"YYMMDDHHMMSS+hhmm\" ) - 1 ; if ( remaining < min_length || remaining > max_length <S2SV_ModEnd> ) return 0 <S2SV_ModStart> += 10 ; remaining -= 10 ; <S2SV_ModStart> } else { int min_length = sizeof ( \"YYYYMMDDHHMMZ\" ) - 1 ; int max_length = sizeof ( \"YYYYMMDDHHMMSS.fff+hhmm\" ) - 1 ; if ( remaining < min_length || remaining > max_length <S2SV_ModEnd> ) return 0 <S2SV_ModStart> += 12 ; remaining -= 12 ; <S2SV_ModStart> } else { if ( remaining < 2 ) return 0 ; * ( p ++ ) = * ( str ++ ) ; * ( p ++ ) = * ( str ++ ) ; remaining -= 2 ; if ( remaining && <S2SV_ModEnd> * str == <S2SV_ModStart> str ++ ; remaining -- ; for ( i = 0 ; i < 3 && remaining ; i ++ , str ++ , remaining -- ) { if ( * str < '0' || * str > '9' ) break ; } <S2SV_ModEnd> } } * <S2SV_ModStart> ; if ( ! remaining ) return 0 ; if ( <S2SV_ModStart> == 'Z' ) { if ( remaining != 1 ) return 0 ; <S2SV_ModStart> = 0 ; } <S2SV_ModStart> != '-' ) ) return 0 ; if ( remaining != 5 ) return 0 ; if ( str [ 1 ] < '0' || str [ 1 ] > '9' || str [ 2 ] < '0' || str [ 2 ] > '9' || str [ 3 ] < '0' || str [ 3 ] > '9' || str [ 4 ] < '0' || str [ 4 ] > '9'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 BOOL nsc_process_message ( NSC_CONTEXT * context , UINT16 bpp , UINT32 width , UINT32 height , const BYTE * data , UINT32 length , BYTE * pDstData , UINT32 DstFormat , UINT32 nDstStride , UINT32 nXDst , UINT32 nYDst , UINT32 nWidth , UINT32 nHeight , UINT32 flip ) { wStream * s ; BOOL ret ; s = Stream_New ( ( BYTE * ) data , length ) ; if ( ! s ) return FALSE ; if ( nDstStride == 0 ) nDstStride = nWidth * GetBytesPerPixel ( DstFormat ) ; switch ( bpp ) { case 32 : context -> format = PIXEL_FORMAT_BGRA32 ; break ; case 24 : context -> format = PIXEL_FORMAT_BGR24 ; break ; case 16 : context -> format = PIXEL_FORMAT_BGR16 ; break ; case 8 : context -> format = PIXEL_FORMAT_RGB8 ; break ; case 4 : context -> format = PIXEL_FORMAT_A4 ; break ; default : Stream_Free ( s , TRUE ) ; return FALSE ; } context -> width = width ; context -> height = height ; ret = nsc_context_initialize ( context , s ) ; Stream_Free ( s , FALSE ) ; if ( ! ret ) return FALSE ; <S2SV_StartBug> PROFILER_ENTER ( context -> priv -> prof_nsc_rle_decompress_data ) <S2SV_EndBug> <S2SV_StartBug> nsc_rle_decompress_data ( context ) ; <S2SV_EndBug> PROFILER_EXIT ( context -> priv -> prof_nsc_rle_decompress_data ) <S2SV_StartBug> PROFILER_ENTER ( context -> priv -> prof_nsc_decode ) <S2SV_EndBug> <S2SV_StartBug> context -> decode ( context ) ; <S2SV_EndBug> <S2SV_StartBug> PROFILER_EXIT ( context -> priv -> prof_nsc_decode ) <S2SV_EndBug> if ( ! freerdp_image_copy ( pDstData , DstFormat , nDstStride , nXDst , nYDst , width , height , context -> BitmapData , PIXEL_FORMAT_BGRA32 , 0 , 0 , 0 , NULL , flip ) ) return FALSE ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return FALSE ; { BOOL rc ; <S2SV_ModStart> -> prof_nsc_rle_decompress_data ) rc = <S2SV_ModStart> -> prof_nsc_rle_decompress_data ) if ( ! rc ) return FALSE ; } { BOOL rc ; <S2SV_ModStart> -> prof_nsc_decode ) rc = <S2SV_ModStart> -> prof_nsc_decode ) if ( ! rc ) return FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-400 static void Sp_match ( js_State * J ) { js_Regexp * re ; const char * text ; int len ; const char * a , * b , * c , * e ; Resub m ; text = checkstring ( J , 0 ) ; if ( js_isregexp ( J , 1 ) ) js_copy ( J , 1 ) ; else if ( js_isundefined ( J , 1 ) ) js_newregexp ( J , \"\" , 0 ) ; else js_newregexp ( J , js_tostring ( J , 1 ) , 0 ) ; re = js_toregexp ( J , - 1 ) ; if ( ! ( re -> flags & JS_REGEXP_G ) ) { js_RegExp_prototype_exec ( J , re , text ) ; return ; } re -> last = 0 ; js_newarray ( J ) ; len = 0 ; a = text ; e = text + strlen ( text ) ; while ( a <= e ) { <S2SV_StartBug> if ( js_regexec ( re -> prog , a , & m , a > text ? REG_NOTBOL : 0 ) ) <S2SV_EndBug> break ; b = m . sub [ 0 ] . sp ; c = m . sub [ 0 ] . ep ; js_pushlstring ( J , b , c - b ) ; js_setindex ( J , - 2 , len ++ ) ; a = c ; if ( c - b == 0 ) ++ a ; } if ( len == 0 ) { js_pop ( J , 1 ) ; js_pushnull ( J ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( js_doregexec ( J , <S2SV_ModEnd> re -> prog\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18218\n\n```\nCWE-416 static netdev_tx_t hns_nic_net_xmit ( struct sk_buff * skb , struct net_device * ndev ) { struct hns_nic_priv * priv = netdev_priv ( ndev ) ; <S2SV_StartBug> int ret ; <S2SV_EndBug> assert ( skb -> queue_mapping < ndev -> ae_handle -> q_num ) ; <S2SV_StartBug> ret = hns_nic_net_xmit_hw ( ndev , skb , <S2SV_EndBug> & tx_ring_data ( priv , skb -> queue_mapping ) ) ; <S2SV_StartBug> if ( ret == NETDEV_TX_OK ) { <S2SV_EndBug> netif_trans_update ( ndev ) ; ndev -> stats . tx_bytes += skb -> len ; ndev -> stats . tx_packets ++ ; } return ( netdev_tx_t ) ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ndev ) ; <S2SV_ModEnd> assert ( skb <S2SV_ModStart> q_num ) ; return <S2SV_ModEnd> hns_nic_net_xmit_hw ( ndev <S2SV_ModStart> ) ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4557\n\n```\nCWE-000 static int replace_map_fd_with_map_ptr ( struct verifier_env * env ) { struct bpf_insn * insn = env -> prog -> insnsi ; int insn_cnt = env -> prog -> len ; int i , j ; for ( i = 0 ; i < insn_cnt ; i ++ , insn ++ ) { if ( BPF_CLASS ( insn -> code ) == BPF_LDX && ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> imm != 0 ) ) { verbose ( \"BPF_LDX<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( BPF_CLASS ( insn -> code ) == BPF_STX && ( ( BPF_MODE ( insn -> code ) != BPF_MEM && BPF_MODE ( insn -> code ) != BPF_XADD ) || insn -> imm != 0 ) ) { verbose ( \"BPF_STX<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( insn [ 0 ] . code == ( BPF_LD | BPF_IMM | BPF_DW ) ) { struct bpf_map * map ; struct fd f ; if ( i == insn_cnt - 1 || insn [ 1 ] . code != 0 || insn [ 1 ] . dst_reg != 0 || insn [ 1 ] . src_reg != 0 || insn [ 1 ] . off != 0 ) { verbose ( \"invalid<S2SV_blank>bpf_ld_imm64<S2SV_blank>insn\\\\n\" ) ; return - EINVAL ; } if ( insn -> src_reg == 0 ) goto next_insn ; if ( insn -> src_reg != BPF_PSEUDO_MAP_FD ) { verbose ( \"unrecognized<S2SV_blank>bpf_ld_imm64<S2SV_blank>insn\\\\n\" ) ; return - EINVAL ; } f = fdget ( insn -> imm ) ; map = __bpf_map_get ( f ) ; if ( IS_ERR ( map ) ) { verbose ( \"fd<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>not<S2SV_blank>pointing<S2SV_blank>to<S2SV_blank>valid<S2SV_blank>bpf_map\\\\n\" , insn -> imm ) ; <S2SV_StartBug> fdput ( f ) ; <S2SV_EndBug> return PTR_ERR ( map ) ; } insn [ 0 ] . imm = ( u32 ) ( unsigned long ) map ; insn [ 1 ] . imm = ( ( u64 ) ( unsigned long ) map ) >> 32 ; for ( j = 0 ; j < env -> used_map_cnt ; j ++ ) if ( env -> used_maps [ j ] == map ) { fdput ( f ) ; goto next_insn ; } if ( env -> used_map_cnt >= MAX_USED_MAPS ) { fdput ( f ) ; return - E2BIG ; } env -> used_maps [ env -> used_map_cnt ++ ] = map ; bpf_map_inc ( map , false ) ; fdput ( f ) ; next_insn : insn ++ ; i ++ ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> imm ) ; <S2SV_ModEnd> return PTR_ERR (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000211\n\n```\nCWE-416 void HTML_put_string ( HTStructured * me , const char * s ) <S2SV_StartBug> { <S2SV_EndBug> # ifdef USE_PRETTYSRC char * translated_string = NULL ; # endif if ( s == NULL || ( LYMapsOnly && me -> sp [ 0 ] . tag_number != HTML_OBJECT ) ) return ; # ifdef USE_PRETTYSRC if ( psrc_convert_string ) { StrAllocCopy ( translated_string , s ) ; TRANSLATE_AND_UNESCAPE_ENTITIES ( & translated_string , TRUE , FALSE ) ; s = ( const char * ) translated_string ; } # endif switch ( me -> sp [ 0 ] . tag_number ) { case HTML_COMMENT : break ; case HTML_TITLE : <S2SV_StartBug> HTChunkPuts ( & me -> title , s ) ; <S2SV_EndBug> break ; case HTML_STYLE : <S2SV_StartBug> HTChunkPuts ( & me -> style_block , s ) ; <S2SV_EndBug> break ; case HTML_SCRIPT : <S2SV_StartBug> HTChunkPuts ( & me -> script , s ) ; <S2SV_EndBug> break ; case HTML_PRE : case HTML_LISTING : case HTML_XMP : case HTML_PLAINTEXT : HText_appendText ( me -> text , s ) ; break ; case HTML_OBJECT : <S2SV_StartBug> HTChunkPuts ( & me -> object , s ) ; <S2SV_EndBug> break ; case HTML_TEXTAREA : <S2SV_StartBug> HTChunkPuts ( & me -> textarea , s ) ; <S2SV_EndBug> break ; case HTML_SELECT : case HTML_OPTION : <S2SV_StartBug> HTChunkPuts ( & me -> option , s ) ; <S2SV_EndBug> break ; case HTML_MATH : <S2SV_StartBug> HTChunkPuts ( & me -> math , s ) ; <S2SV_EndBug> break ; default : if ( ! me -> sp -> style -> freeFormat ) { # ifdef USE_PRETTYSRC if ( psrc_view ) { for ( ; * s ; ++ s ) HTML_put_character ( me , * s ) ; } else # endif HText_appendText ( me -> text , s ) ; break ; } else { const char * p = s ; char c ; if ( me -> style_change ) { for ( ; * p && ( ( * p == '\\\\n' ) || ( * p == '\\\\r' ) || ( * p == '<S2SV_blank>' ) || ( * p == '\\\\t' ) ) ; p ++ ) ; if ( ! * p ) break ; UPDATE_STYLE ; } for ( ; * p ; p ++ ) { if ( * p == 13 && p [ 1 ] != 10 ) { c = '\\\\n' ; } else { c = * p ; } if ( me -> style_change ) { if ( ( c == '\\\\n' ) || ( c == '<S2SV_blank>' ) || ( c == '\\\\t' ) ) continue ; UPDATE_STYLE ; } if ( c == '\\\\n' ) { if ( ! FIX_JAPANESE_SPACES ) { if ( me -> in_word ) { if ( HText_getLastChar ( me -> text ) != '<S2SV_blank>' ) HText_appendCharacter ( me -> text , '<S2SV_blank>' ) ; me -> in_word = NO ; } } } else if ( c == '<S2SV_blank>' || c == '\\\\t' ) { if ( HText_getLastChar ( me -> text ) != '<S2SV_blank>' ) HText_appendCharacter ( me -> text , '<S2SV_blank>' ) ; } else if ( c == '\\\\r' ) { } else { HText_appendCharacter ( me -> text , c ) ; me -> in_word = YES ; } if ( c == '\\\\n' || c == '\\\\t' ) { HText_setLastChar ( me -> text , '<S2SV_blank>' ) ; } else if ( c == '\\\\r' && HText_getLastChar ( me -> text ) == '<S2SV_blank>' ) { HText_setLastChar ( me -> text , '<S2SV_blank>' ) ; } else { HText_setLastChar ( me -> text , c ) ; } } } } <S2SV_StartBug> # ifdef USE_PRETTYSRC <S2SV_EndBug> if ( psrc_convert_string ) { psrc_convert_string = FALSE ; FREE ( translated_string ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { HTChunk * target = NULL ; <S2SV_ModStart> case HTML_TITLE : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> title <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_STYLE : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> style_block <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_SCRIPT : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> script <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_OBJECT : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> object <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_TEXTAREA : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> textarea <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_OPTION : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> option <S2SV_ModEnd> ; break ; <S2SV_ModStart> case HTML_MATH : target = <S2SV_ModEnd> & me -> <S2SV_ModStart> me -> math <S2SV_ModEnd> ; break ; <S2SV_ModStart> } } } if ( target != NULL ) { if ( target -> data == s ) { CTRACE ( ( tfp , \"BUG:<S2SV_blank>appending<S2SV_blank>chunk<S2SV_blank>to<S2SV_blank>itself:<S2SV_blank>`%.*s\\'\\\\n\" , target -> size , target -> data ) ) ; } else { HTChunkPuts ( target , s ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13689\n\n```\nCWE-125 static const u_char * ikev1_id_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , const u_char * ep _U_ , uint32_t phase , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { # define USE_IPSECDOI_IN_PHASE1 1 const struct ikev1_pl_id * p ; struct ikev1_pl_id id ; static const char * idtypestr [ ] = { \"IPv4\" , \"IPv4net\" , \"IPv6\" , \"IPv6net\" , } ; static const char * ipsecidtypestr [ ] = { NULL , \"IPv4\" , \"FQDN\" , \"user<S2SV_blank>FQDN\" , \"IPv4net\" , \"IPv6\" , \"IPv6net\" , \"IPv4range\" , \"IPv6range\" , \"ASN1<S2SV_blank>DN\" , \"ASN1<S2SV_blank>GN\" , \"keyid\" , } ; int len ; const u_char * data ; ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_ID ) ) ) ; p = ( const struct ikev1_pl_id * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & id , ext , sizeof ( id ) ) ; if ( sizeof ( * p ) < item_len ) { data = ( const u_char * ) ( p + 1 ) ; len = item_len - sizeof ( * p ) ; } else { data = NULL ; len = 0 ; } # if 0 ND_PRINT ( ( ndo , \"<S2SV_blank>[phase=%d<S2SV_blank>doi=%d<S2SV_blank>proto=%d]\" , phase , doi , proto ) ) ; # endif switch ( phase ) { # ifndef USE_IPSECDOI_IN_PHASE1 case 1 : # endif default : ND_PRINT ( ( ndo , \"<S2SV_blank>idtype=%s\" , STR_OR_ID ( id . d . id_type , idtypestr ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>doi_data=%u\" , ( uint32_t ) ( ntohl ( id . d . doi_data ) & 0xffffff ) ) ) ; break ; # ifdef USE_IPSECDOI_IN_PHASE1 case 1 : # endif case 2 : { const struct ipsecdoi_id * doi_p ; struct ipsecdoi_id doi_id ; const char * p_name ; doi_p = ( const struct ipsecdoi_id * ) ext ; ND_TCHECK ( * doi_p ) ; UNALIGNED_MEMCPY ( & doi_id , ext , sizeof ( doi_id ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>idtype=%s\" , STR_OR_ID ( doi_id . type , ipsecidtypestr ) ) ) ; if ( ! ndo -> ndo_nflag && doi_id . proto_id && ( p_name = netdb_protoname ( doi_id . proto_id ) ) != NULL ) ND_PRINT ( ( ndo , \"<S2SV_blank>protoid=%s\" , p_name ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>protoid=%u\" , doi_id . proto_id ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>port=%d\" , ntohs ( doi_id . port ) ) ) ; if ( ! len ) break ; if ( data == NULL ) goto trunc ; ND_TCHECK2 ( * data , len ) ; switch ( doi_id . type ) { case IPSECDOI_ID_IPV4_ADDR : if ( len < 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>4]\" , len ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s\" , len , ipaddr_string ( ndo , data ) ) ) ; len = 0 ; break ; case IPSECDOI_ID_FQDN : case IPSECDOI_ID_USER_FQDN : { int i ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>\" , len ) ) ; for ( i = 0 ; i < len ; i ++ ) safeputchar ( ndo , data [ i ] ) ; len = 0 ; break ; } case IPSECDOI_ID_IPV4_ADDR_SUBNET : { const u_char * mask ; if ( len < 8 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>8]\" , len ) ) ; else { mask = data + sizeof ( struct in_addr ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s/%u.%u.%u.%u\" , len , ipaddr_string ( ndo , data ) , mask [ 0 ] , mask [ 1 ] , mask [ 2 ] , mask [ 3 ] ) ) ; } len = 0 ; break ; } case IPSECDOI_ID_IPV6_ADDR : if ( len < 16 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>16]\" , len ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s\" , len , ip6addr_string ( ndo , data ) ) ) ; len = 0 ; break ; case IPSECDOI_ID_IPV6_ADDR_SUBNET : { const u_char * mask ; <S2SV_StartBug> if ( len < 20 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>20]\" , len ) ) ; else { mask = ( const u_char * ) ( data + sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s/0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\" , len , ip6addr_string ( ndo , data ) , mask [ 0 ] , mask [ 1 ] , mask [ 2 ] , mask [ 3 ] , mask [ 4 ] , mask [ 5 ] , mask [ 6 ] , mask [ 7 ] , mask [ 8 ] , mask [ 9 ] , mask [ 10 ] , mask [ 11 ] , mask [ 12 ] , mask [ 13 ] , mask [ 14 ] , mask [ 15 ] ) ) ; } len = 0 ; break ; } case IPSECDOI_ID_IPV4_ADDR_RANGE : if ( len < 8 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>8]\" , len ) ) ; else { ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s-%s\" , len , ipaddr_string ( ndo , data ) , ipaddr_string ( ndo , data + sizeof ( struct in_addr ) ) ) ) ; } len = 0 ; break ; case IPSECDOI_ID_IPV6_ADDR_RANGE : if ( len < 32 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>32]\" , len ) ) ; else { ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s-%s\" , len , ip6addr_string ( ndo , data ) , ip6addr_string ( ndo , data + sizeof ( struct in6_addr ) ) ) ) ; } len = 0 ; break ; case IPSECDOI_ID_DER_ASN1_DN : case IPSECDOI_ID_DER_ASN1_GN : case IPSECDOI_ID_KEY_ID : break ; } break ; } } if ( data && len ) { ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d\" , len ) ) ; if ( 2 < ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) data , len ) ) goto trunc ; } } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_ID ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( len < 32 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>32]\" <S2SV_ModEnd> , len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8812\n\n```\nCWE-000 int iwch_cxgb3_ofld_send ( struct t3cdev * tdev , struct sk_buff * skb ) { int error = 0 ; struct cxio_rdev * rdev ; rdev = ( struct cxio_rdev * ) tdev -> ulp ; if ( cxio_fatal_error ( rdev ) ) { kfree_skb ( skb ) ; return - EIO ; } error = cxgb3_ofld_send ( tdev , skb ) ; if ( error < 0 ) kfree_skb ( skb ) ; <S2SV_StartBug> return error ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return error < 0 ? error : 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6701\n\n```\nCWE-000 static ssize_t aio_setup_vectored_rw ( int type , struct kiocb * kiocb , bool compat ) { ssize_t ret ; # ifdef CONFIG_COMPAT if ( compat ) ret = compat_rw_copy_check_uvector ( type , ( struct compat_iovec __user * ) kiocb -> ki_buf , kiocb -> ki_nbytes , 1 , & kiocb -> ki_inline_vec , & kiocb -> ki_iovec , 1 ) ; else # endif ret = rw_copy_check_uvector ( type , ( struct iovec __user * ) kiocb -> ki_buf , kiocb -> ki_nbytes , 1 , & kiocb -> ki_inline_vec , & kiocb -> ki_iovec , 1 ) ; if ( ret < 0 ) goto out ; <S2SV_StartBug> kiocb -> ki_nr_segs = kiocb -> ki_nbytes ; <S2SV_EndBug> kiocb -> ki_cur_seg = 0 ; kiocb -> ki_nbytes = ret ; kiocb -> ki_left = ret ; ret = 0 ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; ret = rw_verify_area ( type , kiocb -> ki_filp , & kiocb -> ki_pos , ret ) ; if ( ret < 0 ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 int sas_discover_sata ( struct domain_device * dev ) { int res ; if ( dev -> dev_type == SAS_SATA_PM ) return - ENODEV ; dev -> sata_dev . class = sas_get_ata_command_set ( dev ) ; sas_fill_in_rphy ( dev , dev -> rphy ) ; res = sas_notify_lldd_dev_found ( dev ) ; if ( res ) return res ; <S2SV_StartBug> sas_discover_event ( dev -> port , DISCE_PROBE ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9934\n\n```\nCWE-476 void pdo_stmt_init ( TSRMLS_D ) { zend_class_entry ce ; INIT_CLASS_ENTRY ( ce , \"PDOStatement\" , pdo_dbstmt_functions ) ; pdo_dbstmt_ce = zend_register_internal_class ( & ce TSRMLS_CC ) ; pdo_dbstmt_ce -> get_iterator = pdo_stmt_iter_get ; pdo_dbstmt_ce -> create_object = pdo_dbstmt_new ; zend_class_implements ( pdo_dbstmt_ce TSRMLS_CC , 1 , zend_ce_traversable ) ; zend_declare_property_null ( pdo_dbstmt_ce , \"queryString\" , sizeof ( \"queryString\" ) - 1 , ZEND_ACC_PUBLIC TSRMLS_CC ) ; memcpy ( & pdo_dbstmt_object_handlers , & std_object_handlers , sizeof ( zend_object_handlers ) ) ; pdo_dbstmt_object_handlers . write_property = dbstmt_prop_write ; pdo_dbstmt_object_handlers . unset_property = dbstmt_prop_delete ; pdo_dbstmt_object_handlers . get_method = dbstmt_method_get ; pdo_dbstmt_object_handlers . compare_objects = dbstmt_compare ; pdo_dbstmt_object_handlers . clone_obj = dbstmt_clone_obj ; INIT_CLASS_ENTRY ( ce , \"PDORow\" , pdo_row_functions ) ; pdo_row_ce = zend_register_internal_class ( & ce TSRMLS_CC ) ; pdo_row_ce -> ce_flags |= ZEND_ACC_FINAL_CLASS ; pdo_row_ce -> create_object = pdo_row_new ; pdo_row_ce -> serialize = pdo_row_serialize ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = pdo_row_serialize ; pdo_row_ce -> unserialize = zend_class_unserialize_deny ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext2_xattr_list ( struct dentry * dentry , char * buffer , size_t buffer_size ) { struct inode * inode = d_inode ( dentry ) ; struct buffer_head * bh = NULL ; struct ext2_xattr_entry * entry ; char * end ; size_t rest = buffer_size ; <S2SV_StartBug> int error ; <S2SV_EndBug> ea_idebug ( inode , \"buffer=%p,<S2SV_blank>buffer_size=%ld\" , buffer , ( long ) buffer_size ) ; down_read ( & EXT2_I ( inode ) -> xattr_sem ) ; error = 0 ; if ( ! EXT2_I ( inode ) -> i_file_acl ) goto cleanup ; ea_idebug ( inode , \"reading<S2SV_blank>block<S2SV_blank>%d\" , EXT2_I ( inode ) -> i_file_acl ) ; bh = sb_bread ( inode -> i_sb , EXT2_I ( inode ) -> i_file_acl ) ; error = - EIO ; if ( ! bh ) goto cleanup ; ea_bdebug ( bh , \"b_count=%d,<S2SV_blank>refcount=%d\" , atomic_read ( & ( bh -> b_count ) ) , le32_to_cpu ( HDR ( bh ) -> h_refcount ) ) ; end = bh -> b_data + bh -> b_size ; if ( HDR ( bh ) -> h_magic != cpu_to_le32 ( EXT2_XATTR_MAGIC ) || HDR ( bh ) -> h_blocks != cpu_to_le32 ( 1 ) ) { bad_block : ext2_error ( inode -> i_sb , \"ext2_xattr_list\" , \"inode<S2SV_blank>%ld:<S2SV_blank>bad<S2SV_blank>block<S2SV_blank>%d\" , inode -> i_ino , EXT2_I ( inode ) -> i_file_acl ) ; error = - EIO ; goto cleanup ; } entry = FIRST_ENTRY ( bh ) ; while ( ! IS_LAST_ENTRY ( entry ) ) { struct ext2_xattr_entry * next = EXT2_XATTR_NEXT ( entry ) ; if ( ( char * ) next >= end ) goto bad_block ; entry = next ; } <S2SV_StartBug> if ( ext2_xattr_cache_insert ( bh ) ) <S2SV_EndBug> ea_idebug ( inode , \"cache<S2SV_blank>insert<S2SV_blank>failed\" ) ; for ( entry = FIRST_ENTRY ( bh ) ; ! IS_LAST_ENTRY ( entry ) ; entry = EXT2_XATTR_NEXT ( entry ) ) { const struct xattr_handler * handler = ext2_xattr_handler ( entry -> e_name_index ) ; if ( handler && ( ! handler -> list || handler -> list ( dentry ) ) ) { const char * prefix = handler -> prefix ? : handler -> name ; size_t prefix_len = strlen ( prefix ) ; size_t size = prefix_len + entry -> e_name_len + 1 ; if ( buffer ) { if ( size > rest ) { error = - ERANGE ; goto cleanup ; } memcpy ( buffer , prefix , prefix_len ) ; buffer += prefix_len ; memcpy ( buffer , entry -> e_name , entry -> e_name_len ) ; buffer += entry -> e_name_len ; * buffer ++ = 0 ; } rest -= size ; } } error = buffer_size - rest ; cleanup : brelse ( bh ) ; up_read ( & EXT2_I ( inode ) -> xattr_sem ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int error ; struct mb2_cache * ext2_mb_cache = EXT2_SB ( inode -> i_sb ) -> s_mb_cache <S2SV_ModStart> ( ext2_xattr_cache_insert ( ext2_mb_cache ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8929\n\n```\nCWE-416 int yr_object_copy ( YR_OBJECT * object , YR_OBJECT * * object_copy ) { YR_OBJECT * copy ; YR_OBJECT * o ; YR_STRUCTURE_MEMBER * structure_member ; YR_OBJECT_FUNCTION * func ; YR_OBJECT_FUNCTION * func_copy ; int i ; * object_copy = NULL ; FAIL_ON_ERROR ( yr_object_create ( object -> type , object -> identifier , NULL , & copy ) ) ; switch ( object -> type ) { case OBJECT_TYPE_INTEGER : <S2SV_StartBug> ( ( YR_OBJECT_INTEGER * ) copy ) -> value = UNDEFINED ; <S2SV_EndBug> break ; case OBJECT_TYPE_STRING : <S2SV_StartBug> ( ( YR_OBJECT_STRING * ) copy ) -> value = NULL ; <S2SV_EndBug> break ; case OBJECT_TYPE_FUNCTION : func = ( YR_OBJECT_FUNCTION * ) object ; func_copy = ( YR_OBJECT_FUNCTION * ) copy ; FAIL_ON_ERROR_WITH_CLEANUP ( yr_object_copy ( func -> return_obj , & func_copy -> return_obj ) , yr_object_destroy ( copy ) ) ; for ( i = 0 ; i < MAX_OVERLOADED_FUNCTIONS ; i ++ ) func_copy -> prototypes [ i ] = func -> prototypes [ i ] ; break ; case OBJECT_TYPE_STRUCTURE : structure_member = ( ( YR_OBJECT_STRUCTURE * ) object ) -> members ; while ( structure_member != NULL ) { FAIL_ON_ERROR_WITH_CLEANUP ( yr_object_copy ( structure_member -> object , & o ) , yr_object_destroy ( copy ) ) ; FAIL_ON_ERROR_WITH_CLEANUP ( yr_object_structure_set_member ( copy , o ) , yr_free ( o ) ; yr_object_destroy ( copy ) ) ; structure_member = structure_member -> next ; } break ; case OBJECT_TYPE_ARRAY : yr_object_copy ( ( ( YR_OBJECT_ARRAY * ) object ) -> prototype_item , & o ) ; ( ( YR_OBJECT_ARRAY * ) copy ) -> prototype_item = o ; break ; case OBJECT_TYPE_DICTIONARY : yr_object_copy ( ( ( YR_OBJECT_DICTIONARY * ) object ) -> prototype_item , & o ) ; ( ( YR_OBJECT_DICTIONARY * ) copy ) -> prototype_item = o ; break ; default : assert ( FALSE ) ; } * object_copy = copy ; return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> value = ( ( YR_OBJECT_INTEGER * ) object ) -> value <S2SV_ModEnd> ; break ; <S2SV_ModStart> case OBJECT_TYPE_STRING : if ( <S2SV_ModStart> YR_OBJECT_STRING * ) object ) -> value != NULL ) { ( ( YR_OBJECT_STRING * ) copy ) -> value = sized_string_dup ( ( ( YR_OBJECT_STRING * ) object ) -> value ) ; } else { ( ( YR_OBJECT_STRING * ) copy ) -> value = NULL ; } break ; case OBJECT_TYPE_FLOAT : ( ( YR_OBJECT_DOUBLE * ) copy ) -> value = ( ( YR_OBJECT_DOUBLE * ) object ) -> value <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2543\n\n```\nCWE-000 static int snd_seq_ioctl_remove_events ( struct snd_seq_client * client , void __user * arg ) { struct snd_seq_remove_events info ; if ( copy_from_user ( & info , arg , sizeof ( info ) ) ) return - EFAULT ; if ( info . remove_mode & SNDRV_SEQ_REMOVE_INPUT ) { <S2SV_StartBug> if ( client -> type == USER_CLIENT ) <S2SV_EndBug> snd_seq_fifo_clear ( client -> data . user . fifo ) ; } if ( info . remove_mode & SNDRV_SEQ_REMOVE_OUTPUT ) snd_seq_queue_remove_cells ( client -> number , & info ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> type == USER_CLIENT && client -> data . user . fifo\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2647\n\n```\nCWE-476 key_ref_t key_create_or_update ( key_ref_t keyring_ref , const char * type , const char * description , const void * payload , size_t plen , key_perm_t perm , unsigned long flags ) { struct keyring_index_key index_key = { . description = description , } ; struct key_preparsed_payload prep ; struct assoc_array_edit * edit ; const struct cred * cred = current_cred ( ) ; struct key * keyring , * key = NULL ; key_ref_t key_ref ; int ret ; index_key . type = key_type_lookup ( type ) ; if ( IS_ERR ( index_key . type ) ) { key_ref = ERR_PTR ( - ENODEV ) ; goto error ; } key_ref = ERR_PTR ( - EINVAL ) ; <S2SV_StartBug> if ( ! index_key . type -> match || ! index_key . type -> instantiate || <S2SV_EndBug> ( ! index_key . description && ! index_key . type -> preparse ) ) goto error_put_type ; keyring = key_ref_to_ptr ( keyring_ref ) ; key_check ( keyring ) ; key_ref = ERR_PTR ( - ENOTDIR ) ; if ( keyring -> type != & key_type_keyring ) goto error_put_type ; memset ( & prep , 0 , sizeof ( prep ) ) ; prep . data = payload ; prep . datalen = plen ; prep . quotalen = index_key . type -> def_datalen ; prep . trusted = flags & KEY_ALLOC_TRUSTED ; prep . expiry = TIME_T_MAX ; if ( index_key . type -> preparse ) { ret = index_key . type -> preparse ( & prep ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error_free_prep ; } if ( ! index_key . description ) index_key . description = prep . description ; key_ref = ERR_PTR ( - EINVAL ) ; if ( ! index_key . description ) goto error_free_prep ; } index_key . desc_len = strlen ( index_key . description ) ; key_ref = ERR_PTR ( - EPERM ) ; if ( ! prep . trusted && test_bit ( KEY_FLAG_TRUSTED_ONLY , & keyring -> flags ) ) goto error_free_prep ; flags |= prep . trusted ? KEY_ALLOC_TRUSTED : 0 ; ret = __key_link_begin ( keyring , & index_key , & edit ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error_free_prep ; } ret = key_permission ( keyring_ref , KEY_NEED_WRITE ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error_link_end ; } if ( index_key . type -> update ) { key_ref = find_key_to_update ( keyring_ref , & index_key ) ; if ( key_ref ) goto found_matching_key ; } if ( perm == KEY_PERM_UNDEF ) { perm = KEY_POS_VIEW | KEY_POS_SEARCH | KEY_POS_LINK | KEY_POS_SETATTR ; perm |= KEY_USR_VIEW ; if ( index_key . type -> read ) perm |= KEY_POS_READ ; if ( index_key . type == & key_type_keyring || index_key . type -> update ) perm |= KEY_POS_WRITE ; } key = key_alloc ( index_key . type , index_key . description , cred -> fsuid , cred -> fsgid , cred , perm , flags ) ; if ( IS_ERR ( key ) ) { key_ref = ERR_CAST ( key ) ; goto error_link_end ; } ret = __key_instantiate_and_link ( key , & prep , keyring , NULL , & edit ) ; if ( ret < 0 ) { key_put ( key ) ; key_ref = ERR_PTR ( ret ) ; goto error_link_end ; } key_ref = make_key_ref ( key , is_key_possessed ( keyring_ref ) ) ; error_link_end : __key_link_end ( keyring , & index_key , edit ) ; error_free_prep : if ( index_key . type -> preparse ) index_key . type -> free_preparse ( & prep ) ; error_put_type : key_type_put ( index_key . type ) ; error : return key_ref ; found_matching_key : __key_link_end ( keyring , & index_key , edit ) ; key_ref = __key_update ( key_ref , & prep ) ; goto error_free_prep ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> ! index_key .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 void vrrp_print_json ( void ) { FILE * file ; element e ; struct json_object * array ; if ( LIST_ISEMPTY ( vrrp_data -> vrrp ) ) return ; <S2SV_StartBug> file = fopen ( \"/tmp/keepalived.json\" , \"w\" ) ; <S2SV_EndBug> if ( ! file ) { log_message ( LOG_INFO , \"Can\\'t<S2SV_blank>open<S2SV_blank>/tmp/keepalived.json<S2SV_blank>(%d:<S2SV_blank>%s)\" , errno , strerror ( errno ) ) ; return ; } array = json_object_new_array ( ) ; for ( e = LIST_HEAD ( vrrp_data -> vrrp ) ; e ; ELEMENT_NEXT ( e ) ) { struct json_object * instance_json , * json_stats , * json_data , * vips , * evips , * track_ifp , * track_script ; # ifdef _HAVE_FIB_ROUTING_ struct json_object * vroutes , * vrules ; # endif element f ; vrrp_t * vrrp = ELEMENT_DATA ( e ) ; instance_json = json_object_new_object ( ) ; json_stats = json_object_new_object ( ) ; json_data = json_object_new_object ( ) ; vips = json_object_new_array ( ) ; evips = json_object_new_array ( ) ; track_ifp = json_object_new_array ( ) ; track_script = json_object_new_array ( ) ; # ifdef _HAVE_FIB_ROUTING_ vroutes = json_object_new_array ( ) ; vrules = json_object_new_array ( ) ; # endif json_object_object_add ( json_data , \"iname\" , json_object_new_string ( vrrp -> iname ) ) ; json_object_object_add ( json_data , \"dont_track_primary\" , json_object_new_int ( vrrp -> dont_track_primary ) ) ; json_object_object_add ( json_data , \"skip_check_adv_addr\" , json_object_new_int ( vrrp -> skip_check_adv_addr ) ) ; json_object_object_add ( json_data , \"strict_mode\" , json_object_new_int ( ( int ) vrrp -> strict_mode ) ) ; # ifdef _HAVE_VRRP_VMAC_ json_object_object_add ( json_data , \"vmac_ifname\" , json_object_new_string ( vrrp -> vmac_ifname ) ) ; # endif if ( ! LIST_ISEMPTY ( vrrp -> track_ifp ) ) { for ( f = LIST_HEAD ( vrrp -> track_ifp ) ; f ; ELEMENT_NEXT ( f ) ) { interface_t * ifp = ELEMENT_DATA ( f ) ; json_object_array_add ( track_ifp , json_object_new_string ( ifp -> ifname ) ) ; } } json_object_object_add ( json_data , \"track_ifp\" , track_ifp ) ; if ( ! LIST_ISEMPTY ( vrrp -> track_script ) ) { for ( f = LIST_HEAD ( vrrp -> track_script ) ; f ; ELEMENT_NEXT ( f ) ) { tracked_sc_t * tsc = ELEMENT_DATA ( f ) ; vrrp_script_t * vscript = tsc -> scr ; json_object_array_add ( track_script , json_object_new_string ( cmd_str ( & vscript -> script ) ) ) ; } } json_object_object_add ( json_data , \"track_script\" , track_script ) ; json_object_object_add ( json_data , \"ifp_ifname\" , json_object_new_string ( vrrp -> ifp -> ifname ) ) ; json_object_object_add ( json_data , \"master_priority\" , json_object_new_int ( vrrp -> master_priority ) ) ; json_object_object_add ( json_data , \"last_transition\" , json_object_new_double ( timeval_to_double ( & vrrp -> last_transition ) ) ) ; json_object_object_add ( json_data , \"garp_delay\" , json_object_new_double ( vrrp -> garp_delay / TIMER_HZ_FLOAT ) ) ; json_object_object_add ( json_data , \"garp_refresh\" , json_object_new_int ( ( int ) vrrp -> garp_refresh . tv_sec ) ) ; json_object_object_add ( json_data , \"garp_rep\" , json_object_new_int ( ( int ) vrrp -> garp_rep ) ) ; json_object_object_add ( json_data , \"garp_refresh_rep\" , json_object_new_int ( ( int ) vrrp -> garp_refresh_rep ) ) ; json_object_object_add ( json_data , \"garp_lower_prio_delay\" , json_object_new_int ( ( int ) ( vrrp -> garp_lower_prio_delay / TIMER_HZ ) ) ) ; json_object_object_add ( json_data , \"garp_lower_prio_rep\" , json_object_new_int ( ( int ) vrrp -> garp_lower_prio_rep ) ) ; json_object_object_add ( json_data , \"lower_prio_no_advert\" , json_object_new_int ( ( int ) vrrp -> lower_prio_no_advert ) ) ; json_object_object_add ( json_data , \"higher_prio_send_advert\" , json_object_new_int ( ( int ) vrrp -> higher_prio_send_advert ) ) ; json_object_object_add ( json_data , \"vrid\" , json_object_new_int ( vrrp -> vrid ) ) ; json_object_object_add ( json_data , \"base_priority\" , json_object_new_int ( vrrp -> base_priority ) ) ; json_object_object_add ( json_data , \"effective_priority\" , json_object_new_int ( vrrp -> effective_priority ) ) ; json_object_object_add ( json_data , \"vipset\" , json_object_new_boolean ( vrrp -> vipset ) ) ; if ( ! LIST_ISEMPTY ( vrrp -> vip ) ) { for ( f = LIST_HEAD ( vrrp -> vip ) ; f ; ELEMENT_NEXT ( f ) ) { ip_address_t * vip = ELEMENT_DATA ( f ) ; char ipaddr [ INET6_ADDRSTRLEN ] ; inet_ntop ( vrrp -> family , & ( vip -> u . sin . sin_addr . s_addr ) , ipaddr , INET6_ADDRSTRLEN ) ; json_object_array_add ( vips , json_object_new_string ( ipaddr ) ) ; } } json_object_object_add ( json_data , \"vips\" , vips ) ; if ( ! LIST_ISEMPTY ( vrrp -> evip ) ) { for ( f = LIST_HEAD ( vrrp -> evip ) ; f ; ELEMENT_NEXT ( f ) ) { ip_address_t * evip = ELEMENT_DATA ( f ) ; char ipaddr [ INET6_ADDRSTRLEN ] ; inet_ntop ( vrrp -> family , & ( evip -> u . sin . sin_addr . s_addr ) , ipaddr , INET6_ADDRSTRLEN ) ; json_object_array_add ( evips , json_object_new_string ( ipaddr ) ) ; } } json_object_object_add ( json_data , \"evips\" , evips ) ; json_object_object_add ( json_data , \"promote_secondaries\" , json_object_new_boolean ( vrrp -> promote_secondaries ) ) ; # ifdef _HAVE_FIB_ROUTING_ if ( ! LIST_ISEMPTY ( vrrp -> vroutes ) ) { for ( f = LIST_HEAD ( vrrp -> vroutes ) ; f ; ELEMENT_NEXT ( f ) ) { ip_route_t * route = ELEMENT_DATA ( f ) ; char * buf = MALLOC ( ROUTE_BUF_SIZE ) ; format_iproute ( route , buf , ROUTE_BUF_SIZE ) ; json_object_array_add ( vroutes , json_object_new_string ( buf ) ) ; } } json_object_object_add ( json_data , \"vroutes\" , vroutes ) ; if ( ! LIST_ISEMPTY ( vrrp -> vrules ) ) { for ( f = LIST_HEAD ( vrrp -> vrules ) ; f ; ELEMENT_NEXT ( f ) ) { ip_rule_t * rule = ELEMENT_DATA ( f ) ; char * buf = MALLOC ( RULE_BUF_SIZE ) ; format_iprule ( rule , buf , RULE_BUF_SIZE ) ; json_object_array_add ( vrules , json_object_new_string ( buf ) ) ; } } json_object_object_add ( json_data , \"vrules\" , vrules ) ; # endif json_object_object_add ( json_data , \"adver_int\" , json_object_new_double ( vrrp -> adver_int / TIMER_HZ_FLOAT ) ) ; json_object_object_add ( json_data , \"master_adver_int\" , json_object_new_double ( vrrp -> master_adver_int / TIMER_HZ_FLOAT ) ) ; json_object_object_add ( json_data , \"accept\" , json_object_new_int ( ( int ) vrrp -> accept ) ) ; json_object_object_add ( json_data , \"nopreempt\" , json_object_new_boolean ( vrrp -> nopreempt ) ) ; json_object_object_add ( json_data , \"preempt_delay\" , json_object_new_int ( ( int ) ( vrrp -> preempt_delay / TIMER_HZ ) ) ) ; json_object_object_add ( json_data , \"state\" , json_object_new_int ( vrrp -> state ) ) ; json_object_object_add ( json_data , \"wantstate\" , json_object_new_int ( vrrp -> wantstate ) ) ; json_object_object_add ( json_data , \"version\" , json_object_new_int ( vrrp -> version ) ) ; if ( vrrp -> script_backup ) json_object_object_add ( json_data , \"script_backup\" , json_object_new_string ( cmd_str ( vrrp -> script_backup ) ) ) ; if ( vrrp -> script_master ) json_object_object_add ( json_data , \"script_master\" , json_object_new_string ( cmd_str ( vrrp -> script_master ) ) ) ; if ( vrrp -> script_fault ) json_object_object_add ( json_data , \"script_fault\" , json_object_new_string ( cmd_str ( vrrp -> script_fault ) ) ) ; if ( vrrp -> script_stop ) json_object_object_add ( json_data , \"script_stop\" , json_object_new_string ( cmd_str ( vrrp -> script_stop ) ) ) ; if ( vrrp -> script ) json_object_object_add ( json_data , \"script\" , json_object_new_string ( cmd_str ( vrrp -> script ) ) ) ; if ( vrrp -> script_master_rx_lower_pri ) json_object_object_add ( json_data , \"script_master_rx_lower_pri\" , json_object_new_string ( cmd_str ( vrrp -> script_master_rx_lower_pri ) ) ) ; json_object_object_add ( json_data , \"smtp_alert\" , json_object_new_boolean ( vrrp -> smtp_alert ) ) ; # ifdef _WITH_VRRP_AUTH_ if ( vrrp -> auth_type ) { json_object_object_add ( json_data , \"auth_type\" , json_object_new_int ( vrrp -> auth_type ) ) ; if ( vrrp -> auth_type != VRRP_AUTH_AH ) { char auth_data [ sizeof ( vrrp -> auth_data ) + 1 ] ; memcpy ( auth_data , vrrp -> auth_data , sizeof ( vrrp -> auth_data ) ) ; auth_data [ sizeof ( vrrp -> auth_data ) ] = '\\\\0' ; json_object_object_add ( json_data , \"auth_data\" , json_object_new_string ( auth_data ) ) ; } } else json_object_object_add ( json_data , \"auth_type\" , json_object_new_int ( 0 ) ) ; # endif json_object_object_add ( json_stats , \"advert_rcvd\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> advert_rcvd ) ) ; json_object_object_add ( json_stats , \"advert_sent\" , json_object_new_int64 ( vrrp -> stats -> advert_sent ) ) ; json_object_object_add ( json_stats , \"become_master\" , json_object_new_int64 ( vrrp -> stats -> become_master ) ) ; json_object_object_add ( json_stats , \"release_master\" , json_object_new_int64 ( vrrp -> stats -> release_master ) ) ; json_object_object_add ( json_stats , \"packet_len_err\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> packet_len_err ) ) ; json_object_object_add ( json_stats , \"advert_interval_err\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> advert_interval_err ) ) ; json_object_object_add ( json_stats , \"ip_ttl_err\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> ip_ttl_err ) ) ; json_object_object_add ( json_stats , \"invalid_type_rcvd\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> invalid_type_rcvd ) ) ; json_object_object_add ( json_stats , \"addr_list_err\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> addr_list_err ) ) ; json_object_object_add ( json_stats , \"invalid_authtype\" , json_object_new_int64 ( vrrp -> stats -> invalid_authtype ) ) ; # ifdef _WITH_VRRP_AUTH_ json_object_object_add ( json_stats , \"authtype_mismatch\" , json_object_new_int64 ( vrrp -> stats -> authtype_mismatch ) ) ; json_object_object_add ( json_stats , \"auth_failure\" , json_object_new_int64 ( vrrp -> stats -> auth_failure ) ) ; # endif json_object_object_add ( json_stats , \"pri_zero_rcvd\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> pri_zero_rcvd ) ) ; json_object_object_add ( json_stats , \"pri_zero_sent\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> pri_zero_sent ) ) ; json_object_object_add ( instance_json , \"data\" , json_data ) ; json_object_object_add ( instance_json , \"stats\" , json_stats ) ; json_object_array_add ( array , instance_json ) ; } fprintf ( file , \"%s\" , json_object_to_json_string ( array ) ) ; fclose ( file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; file = fopen_safe <S2SV_ModEnd> ( \"/tmp/keepalived.json\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 int pdf_load_xrefs ( FILE * fp , pdf_t * pdf ) { int i , ver , is_linear ; long pos , pos_count ; char x , * c , buf [ 256 ] ; c = NULL ; pdf -> n_xrefs = 0 ; fseek ( fp , 0 , SEEK_SET ) ; while ( get_next_eof ( fp ) >= 0 ) ++ pdf -> n_xrefs ; if ( ! pdf -> n_xrefs ) return 0 ; fseek ( fp , 0 , SEEK_SET ) ; <S2SV_StartBug> pdf -> xrefs = calloc ( 1 , sizeof ( xref_t ) * pdf -> n_xrefs ) ; <S2SV_EndBug> ver = 1 ; for ( i = 0 ; i < pdf -> n_xrefs ; i ++ ) { if ( ( pos = get_next_eof ( fp ) ) < 0 ) break ; pdf -> xrefs [ i ] . version = ver ++ ; pos_count = 0 ; while ( SAFE_F ( fp , ( ( x = fgetc ( fp ) ) != 'f' ) ) ) fseek ( fp , pos - ( ++ pos_count ) , SEEK_SET ) ; if ( pos_count >= sizeof ( buf ) ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>locate<S2SV_blank>the<S2SV_blank>startxref<S2SV_blank>token.<S2SV_blank>\" \"This<S2SV_blank>might<S2SV_blank>be<S2SV_blank>a<S2SV_blank>corrupt<S2SV_blank>PDF.\\\\n\" ) ; return - 1 ; } memset ( buf , 0 , sizeof ( buf ) ) ; SAFE_E ( fread ( buf , 1 , pos_count , fp ) , pos_count , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>startxref.\\\\n\" ) ; c = buf ; while ( * c == '<S2SV_blank>' || * c == '\\\\n' || * c == '\\\\r' ) ++ c ; pdf -> xrefs [ i ] . start = atol ( c ) ; if ( pdf -> xrefs [ i ] . start == 0 ) get_xref_linear_skipped ( fp , & pdf -> xrefs [ i ] ) ; else { pos = ftell ( fp ) ; fseek ( fp , pdf -> xrefs [ i ] . start , SEEK_SET ) ; pdf -> xrefs [ i ] . end = get_next_eof ( fp ) ; fseek ( fp , pos , SEEK_SET ) ; } if ( ! is_valid_xref ( fp , pdf , & pdf -> xrefs [ i ] ) ) { is_linear = pdf -> xrefs [ i ] . is_linear ; memset ( & pdf -> xrefs [ i ] , 0 , sizeof ( xref_t ) ) ; pdf -> xrefs [ i ] . is_linear = is_linear ; rewind ( fp ) ; get_next_eof ( fp ) ; continue ; } load_xref_entries ( fp , & pdf -> xrefs [ i ] ) ; } if ( pdf -> xrefs [ 0 ] . is_linear ) resolve_linearized_pdf ( pdf ) ; load_creator ( fp , pdf ) ; return pdf -> n_xrefs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> xrefs = safe_calloc ( <S2SV_ModEnd> sizeof ( xref_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19062\n\n```\nCWE-401 static int crypto_report ( struct sk_buff * in_skb , struct nlmsghdr * in_nlh , struct nlattr * * attrs ) { struct net * net = sock_net ( in_skb -> sk ) ; struct crypto_user_alg * p = nlmsg_data ( in_nlh ) ; struct crypto_alg * alg ; struct sk_buff * skb ; struct crypto_dump_info info ; int err ; if ( ! null_terminated ( p -> cru_name ) || ! null_terminated ( p -> cru_driver_name ) ) return - EINVAL ; alg = crypto_alg_match ( p , 0 ) ; if ( ! alg ) return - ENOENT ; err = - ENOMEM ; skb = nlmsg_new ( NLMSG_DEFAULT_SIZE , GFP_KERNEL ) ; if ( ! skb ) goto drop_alg ; info . in_skb = in_skb ; info . out_skb = skb ; info . nlmsg_seq = in_nlh -> nlmsg_seq ; info . nlmsg_flags = 0 ; err = crypto_report_alg ( alg , & info ) ; drop_alg : crypto_mod_put ( alg ) ; if ( err ) <S2SV_StartBug> return err ; <S2SV_EndBug> return nlmsg_unicast ( net -> crypto_nlsk , skb , NETLINK_CB ( in_skb ) . portid ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( err ) { kfree_skb ( skb ) ; return err ; } <S2SV_ModEnd> return nlmsg_unicast (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18221\n\n```\nCWE-20 static void __munlock_pagevec ( struct pagevec * pvec , struct zone * zone ) { int i ; int nr = pagevec_count ( pvec ) ; <S2SV_StartBug> int delta_munlocked ; <S2SV_EndBug> struct pagevec pvec_putback ; int pgrescued = 0 ; pagevec_init ( & pvec_putback , 0 ) ; spin_lock_irq ( zone_lru_lock ( zone ) ) ; for ( i = 0 ; i < nr ; i ++ ) { struct page * page = pvec -> pages [ i ] ; if ( TestClearPageMlocked ( page ) ) { if ( __munlock_isolate_lru_page ( page , false ) ) continue ; else __munlock_isolation_failed ( page ) ; <S2SV_StartBug> } <S2SV_EndBug> pagevec_add ( & pvec_putback , pvec -> pages [ i ] ) ; pvec -> pages [ i ] = NULL ; } <S2SV_StartBug> delta_munlocked = - nr + pagevec_count ( & pvec_putback ) ; <S2SV_EndBug> __mod_zone_page_state ( zone , NR_MLOCK , delta_munlocked ) ; spin_unlock_irq ( zone_lru_lock ( zone ) ) ; pagevec_release ( & pvec_putback ) ; for ( i = 0 ; i < nr ; i ++ ) { struct page * page = pvec -> pages [ i ] ; if ( page ) { lock_page ( page ) ; if ( ! __putback_lru_fast_prepare ( page , & pvec_putback , & pgrescued ) ) { get_page ( page ) ; __munlock_isolated_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; } } } if ( pagevec_count ( & pvec_putback ) ) __putback_lru_fast ( & pvec_putback , pgrescued ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int delta_munlocked = - nr <S2SV_ModStart> ) ; } else { delta_munlocked ++ ; } <S2SV_ModStart> NULL ; } <S2SV_ModEnd> __mod_zone_page_state ( zone\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5844\n\n```\nCWE-190 static int choose_volume ( struct archive_read * a , struct iso9660 * iso9660 ) { struct file_info * file ; int64_t skipsize ; struct vd * vd ; const void * block ; char seenJoliet ; vd = & ( iso9660 -> primary ) ; if ( ! iso9660 -> opt_support_joliet ) iso9660 -> seenJoliet = 0 ; if ( iso9660 -> seenJoliet && vd -> location > iso9660 -> joliet . location ) vd = & ( iso9660 -> joliet ) ; <S2SV_StartBug> skipsize = LOGICAL_BLOCK_SIZE * vd -> location ; <S2SV_EndBug> skipsize = __archive_read_consume ( a , skipsize ) ; if ( skipsize < 0 ) return ( ( int ) skipsize ) ; iso9660 -> current_position = skipsize ; block = __archive_read_ahead ( a , vd -> size , NULL ) ; if ( block == NULL ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>full<S2SV_blank>block<S2SV_blank>when<S2SV_blank>scanning<S2SV_blank>\" \"ISO9660<S2SV_blank>directory<S2SV_blank>list\" ) ; return ( ARCHIVE_FATAL ) ; } seenJoliet = iso9660 -> seenJoliet ; iso9660 -> seenJoliet = 0 ; file = parse_file_info ( a , NULL , block ) ; if ( file == NULL ) return ( ARCHIVE_FATAL ) ; iso9660 -> seenJoliet = seenJoliet ; if ( vd == & ( iso9660 -> primary ) && iso9660 -> seenRockridge && iso9660 -> seenJoliet ) iso9660 -> seenJoliet = 0 ; if ( vd == & ( iso9660 -> primary ) && ! iso9660 -> seenRockridge && iso9660 -> seenJoliet ) { vd = & ( iso9660 -> joliet ) ; <S2SV_StartBug> skipsize = LOGICAL_BLOCK_SIZE * vd -> location ; <S2SV_EndBug> skipsize -= iso9660 -> current_position ; skipsize = __archive_read_consume ( a , skipsize ) ; if ( skipsize < 0 ) return ( ( int ) skipsize ) ; iso9660 -> current_position += skipsize ; block = __archive_read_ahead ( a , vd -> size , NULL ) ; if ( block == NULL ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>full<S2SV_blank>block<S2SV_blank>when<S2SV_blank>scanning<S2SV_blank>\" \"ISO9660<S2SV_blank>directory<S2SV_blank>list\" ) ; return ( ARCHIVE_FATAL ) ; } iso9660 -> seenJoliet = 0 ; file = parse_file_info ( a , NULL , block ) ; if ( file == NULL ) return ( ARCHIVE_FATAL ) ; iso9660 -> seenJoliet = seenJoliet ; } if ( add_entry ( a , iso9660 , file ) != ARCHIVE_OK ) return ( ARCHIVE_FATAL ) ; if ( iso9660 -> seenRockridge ) { a -> archive . archive_format = ARCHIVE_FORMAT_ISO9660_ROCKRIDGE ; a -> archive . archive_format_name = \"ISO9660<S2SV_blank>with<S2SV_blank>Rockridge<S2SV_blank>extensions\" ; } return ( ARCHIVE_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = LOGICAL_BLOCK_SIZE * ( int64_t ) <S2SV_ModStart> = LOGICAL_BLOCK_SIZE * ( int64_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3302\n\n```\nCWE-362 static int smb_send_rqst ( struct TCP_Server_Info * server , struct smb_rqst * rqst ) { int rc ; struct kvec * iov = rqst -> rq_iov ; int n_vec = rqst -> rq_nvec ; unsigned int smb_buf_length = get_rfc1002_length ( iov [ 0 ] . iov_base ) ; unsigned int i ; size_t total_len = 0 , sent ; struct socket * ssocket = server -> ssocket ; <S2SV_StartBug> int val = 1 ; <S2SV_EndBug> cFYI ( 1 , \"Sending<S2SV_blank>smb:<S2SV_blank>smb_len=%u\" , smb_buf_length ) ; dump_smb ( iov [ 0 ] . iov_base , iov [ 0 ] . iov_len ) ; kernel_setsockopt ( ssocket , SOL_TCP , TCP_CORK , ( char * ) & val , sizeof ( val ) ) ; rc = smb_send_kvec ( server , iov , n_vec , & sent ) ; if ( rc < 0 ) goto uncork ; total_len += sent ; for ( i = 0 ; i < rqst -> rq_npages ; i ++ ) { struct kvec p_iov ; cifs_rqst_page_to_kvec ( rqst , i , & p_iov ) ; rc = smb_send_kvec ( server , & p_iov , 1 , & sent ) ; kunmap ( rqst -> rq_pages [ i ] ) ; if ( rc < 0 ) break ; total_len += sent ; } uncork : val = 0 ; kernel_setsockopt ( ssocket , SOL_TCP , TCP_CORK , ( char * ) & val , sizeof ( val ) ) ; if ( ( total_len > 0 ) && ( total_len != smb_buf_length + 4 ) ) { cFYI ( 1 , \"partial<S2SV_blank>send<S2SV_blank>(wanted=%u<S2SV_blank>sent=%zu):<S2SV_blank>terminating<S2SV_blank>\" \"session\" , smb_buf_length + 4 , total_len ) ; server -> tcpStatus = CifsNeedReconnect ; } if ( rc < 0 && rc != - EINTR ) cERROR ( 1 , \"Error<S2SV_blank>%d<S2SV_blank>sending<S2SV_blank>data<S2SV_blank>on<S2SV_blank>socket<S2SV_blank>to<S2SV_blank>server\" , rc ) ; else rc = 0 ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val = 1 ; if ( ssocket == NULL ) return - ENOTSOCK\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static int mark_source_chains ( const struct xt_table_info * newinfo , unsigned int valid_hooks , void * entry0 ) { unsigned int hook ; for ( hook = 0 ; hook < NF_INET_NUMHOOKS ; hook ++ ) { unsigned int pos = newinfo -> hook_entry [ hook ] ; struct ipt_entry * e = ( struct ipt_entry * ) ( entry0 + pos ) ; if ( ! ( valid_hooks & ( 1 << hook ) ) ) continue ; e -> counters . pcnt = pos ; for ( ; ; ) { const struct xt_standard_target * t = ( void * ) ipt_get_target_c ( e ) ; int visited = e -> comefrom & ( 1 << hook ) ; if ( e -> comefrom & ( 1 << NF_INET_NUMHOOKS ) ) { pr_err ( \"iptables:<S2SV_blank>loop<S2SV_blank>hook<S2SV_blank>%u<S2SV_blank>pos<S2SV_blank>%u<S2SV_blank>%08X.\\\\n\" , hook , pos , e -> comefrom ) ; return 0 ; } e -> comefrom |= ( ( 1 << hook ) | ( 1 << NF_INET_NUMHOOKS ) ) ; <S2SV_StartBug> if ( ( e -> target_offset == sizeof ( struct ipt_entry ) && <S2SV_EndBug> ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 ) && <S2SV_StartBug> t -> verdict < 0 && unconditional ( & e -> ip ) ) || <S2SV_EndBug> visited ) { unsigned int oldpos , size ; if ( ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 ) && t -> verdict < - NF_MAX_VERDICT - 1 ) { duprintf ( \"mark_source_chains:<S2SV_blank>bad<S2SV_blank>\" \"negative<S2SV_blank>verdict<S2SV_blank>(%i)\\\\n\" , t -> verdict ) ; return 0 ; } do { e -> comefrom ^= ( 1 << NF_INET_NUMHOOKS ) ; # ifdef DEBUG_IP_FIREWALL_USER if ( e -> comefrom & ( 1 << NF_INET_NUMHOOKS ) ) { duprintf ( \"Back<S2SV_blank>unset<S2SV_blank>\" \"on<S2SV_blank>hook<S2SV_blank>%u<S2SV_blank>\" \"rule<S2SV_blank>%u\\\\n\" , hook , pos ) ; } # endif oldpos = pos ; pos = e -> counters . pcnt ; e -> counters . pcnt = 0 ; if ( pos == oldpos ) goto next ; e = ( struct ipt_entry * ) ( entry0 + pos ) ; } while ( oldpos == pos + e -> next_offset ) ; size = e -> next_offset ; e = ( struct ipt_entry * ) ( entry0 + pos + size ) ; e -> counters . pcnt = pos ; pos += size ; } else { int newpos = t -> verdict ; if ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 && newpos >= 0 ) { if ( newpos > newinfo -> size - sizeof ( struct ipt_entry ) ) { duprintf ( \"mark_source_chains:<S2SV_blank>\" \"bad<S2SV_blank>verdict<S2SV_blank>(%i)\\\\n\" , newpos ) ; return 0 ; } duprintf ( \"Jump<S2SV_blank>rule<S2SV_blank>%u<S2SV_blank>-><S2SV_blank>%u\\\\n\" , pos , newpos ) ; } else { newpos = pos + e -> next_offset ; } e = ( struct ipt_entry * ) ( entry0 + newpos ) ; e -> counters . pcnt = pos ; pos = newpos ; } } next : duprintf ( \"Finished<S2SV_blank>chain<S2SV_blank>%u\\\\n\" , hook ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( unconditional ( e <S2SV_ModEnd> ) && ( <S2SV_ModStart> verdict < 0 <S2SV_ModEnd> ) || visited\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_copy_and_extend_frame ( const YV12_BUFFER_CONFIG * src , YV12_BUFFER_CONFIG * dst ) { const int et_y = 16 ; const int el_y = 16 ; <S2SV_StartBug> const int eb_y = MAX ( ALIGN_POWER_OF_TWO ( src -> y_width , 6 ) - src -> y_width , <S2SV_EndBug> 16 ) ; const int er_y = MAX ( ALIGN_POWER_OF_TWO ( src -> y_height , 6 ) - src -> y_height , 16 ) ; const int uv_width_subsampling = ( src -> uv_width != src -> y_width ) ; const int uv_height_subsampling = ( src -> uv_height != src -> y_height ) ; const int et_uv = et_y >> uv_height_subsampling ; const int el_uv = el_y >> uv_width_subsampling ; const int eb_uv = eb_y >> uv_height_subsampling ; const int er_uv = er_y >> uv_width_subsampling ; <S2SV_StartBug> # if CONFIG_ALPHA <S2SV_EndBug> const int et_a = dst -> border >> ( dst -> alpha_height != dst -> y_height ) ; const int el_a = dst -> border >> ( dst -> alpha_width != dst -> y_width ) ; const int eb_a = et_a + dst -> alpha_height - src -> alpha_height ; const int er_a = el_a + dst -> alpha_width - src -> alpha_width ; copy_and_extend_plane ( src -> alpha_buffer , src -> alpha_stride , dst -> alpha_buffer , dst -> alpha_stride , src -> alpha_width , src -> alpha_height , et_a , el_a , eb_a , er_a ) ; # endif copy_and_extend_plane ( src -> y_buffer , src -> y_stride , dst -> y_buffer , dst -> y_stride , <S2SV_StartBug> src -> y_width , src -> y_height , <S2SV_EndBug> et_y , el_y , eb_y , er_y ) ; copy_and_extend_plane ( src -> u_buffer , src -> uv_stride , dst -> u_buffer , dst -> uv_stride , <S2SV_StartBug> src -> uv_width , src -> uv_height , <S2SV_EndBug> et_uv , el_uv , eb_uv , er_uv ) ; copy_and_extend_plane ( src -> v_buffer , src -> uv_stride , dst -> v_buffer , dst -> uv_stride , <S2SV_StartBug> src -> uv_width , src -> uv_height , <S2SV_EndBug> et_uv , el_uv , eb_uv , er_uv ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; const int er_y = MAX ( src -> y_width + 16 , ALIGN_POWER_OF_TWO ( src -> y_width , 6 ) ) - src -> y_crop_width ; const int <S2SV_ModStart> = MAX ( src -> y_height + 16 , <S2SV_ModStart> ( src -> y_height <S2SV_ModEnd> , 6 ) <S2SV_ModStart> , 6 ) ) <S2SV_ModStart> - src -> y_crop_height <S2SV_ModEnd> ; const int <S2SV_ModStart> ; # if CONFIG_VP9_HIGHBITDEPTH if ( src -> flags & YV12_FLAG_HIGHBITDEPTH ) { highbd_copy_and_extend_plane ( src -> y_buffer , src -> y_stride , dst -> y_buffer , dst -> y_stride , src -> y_crop_width , src -> y_crop_height , et_y , el_y , eb_y , er_y ) ; highbd_copy_and_extend_plane ( src -> u_buffer , src -> uv_stride , dst -> u_buffer , dst -> uv_stride , src -> uv_crop_width , src -> uv_crop_height , et_uv , el_uv , eb_uv , er_uv ) ; highbd_copy_and_extend_plane ( src -> v_buffer , src -> uv_stride , dst -> v_buffer , dst -> uv_stride , src -> uv_crop_width , src -> uv_crop_height , et_uv , el_uv , eb_uv , er_uv ) ; return ; } <S2SV_ModEnd> # endif copy_and_extend_plane <S2SV_ModStart> , src -> y_crop_width , src -> y_crop_height <S2SV_ModEnd> , et_y , <S2SV_ModStart> , src -> uv_crop_width , src -> uv_crop_height <S2SV_ModEnd> , et_uv , <S2SV_ModStart> , src -> uv_crop_width , src -> uv_crop_height <S2SV_ModEnd> , et_uv ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6536\n\n```\nCWE-200 static inline int verify_replay ( struct xfrm_usersa_info * p , struct nlattr * * attrs ) { struct nlattr * rt = attrs [ XFRMA_REPLAY_ESN_VAL ] ; <S2SV_StartBug> if ( ( p -> flags & XFRM_STATE_ESN ) && ! rt ) <S2SV_EndBug> <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> if ( ! rt ) return 0 ; if ( p -> id . proto != IPPROTO_ESP ) return - EINVAL ; if ( p -> replay_window != 0 ) return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> XFRMA_REPLAY_ESN_VAL ] ; struct xfrm_replay_state_esn * rs ; if <S2SV_ModEnd> ( p -> <S2SV_ModStart> & XFRM_STATE_ESN ) { if ( <S2SV_ModEnd> ! rt ) <S2SV_ModStart> - EINVAL ; rs = nla_data ( rt ) ; if ( rs -> bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof ( rs -> bmp [ 0 ] ) / 8 ) return - EINVAL ; if ( nla_len ( rt ) < xfrm_replay_state_esn_len ( rs ) && nla_len ( rt ) != sizeof ( * rs ) ) return - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2674\n\n```\nCWE-189 void * leak_malloc ( size_t bytes ) { <S2SV_StartBug> void * base = dlmalloc ( bytes + sizeof ( AllocationEntry ) ) ; <S2SV_EndBug> if ( base != NULL ) { pthread_mutex_lock ( & gAllocationsMutex ) ; intptr_t backtrace [ BACKTRACE_SIZE ] ; size_t numEntries = get_backtrace ( backtrace , BACKTRACE_SIZE ) ; AllocationEntry * header = ( AllocationEntry * ) base ; header -> entry = record_backtrace ( backtrace , numEntries , bytes ) ; header -> guard = GUARD ; base = ( AllocationEntry * ) base + 1 ; pthread_mutex_unlock ( & gAllocationsMutex ) ; } return base ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bytes ) { size_t size = bytes + sizeof ( AllocationEntry ) ; if ( size < bytes ) { return NULL ; } <S2SV_ModStart> = dlmalloc ( size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0816\n\n```\nCWE-119 WORD32 ih264d_mark_err_slice_skip ( dec_struct_t * ps_dec , WORD32 num_mb_skip , UWORD8 u1_is_idr_slice , UWORD16 u2_frame_num , pocstruct_t * ps_cur_poc , WORD32 prev_slice_err ) { WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 ; UWORD32 u1_mb_idx = ps_dec -> u1_mb_idx ; UWORD32 i2_mb_skip_run ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD32 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end ; UWORD32 u1_tfr_n_mb ; UWORD32 u1_decode_nmb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD16 u2_total_mbs_coded ; UWORD32 u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; parse_part_params_t * ps_part_info ; WORD32 ret ; if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return 0 ; } if ( prev_slice_err == 1 ) { ps_dec -> ps_cur_slice -> u2_frame_num = u2_frame_num ; if ( ! ps_dec -> u1_first_slice_in_stream ) { ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , ps_dec -> ps_cur_slice -> u2_frame_num ) ; ps_dec -> s_cur_pic_poc . u2_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; } { WORD32 i , j , poc = 0 ; ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = 0 ; ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; if ( ps_dec -> ps_cur_pic != NULL ) poc = ps_dec -> ps_cur_pic -> i4_poc + 2 ; j = 0 ; for ( i = 0 ; i < MAX_NUM_PIC_PARAMS ; i ++ ) if ( ps_dec -> ps_pps [ i ] . u1_is_valid == TRUE ) j = i ; { ret = ih264d_start_of_pic ( ps_dec , poc , ps_cur_poc , ps_dec -> ps_cur_slice -> u2_frame_num , & ps_dec -> ps_pps [ j ] ) ; if ( ret != OK ) { return ret ; } } ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ 0 ] -> u1_pic_buf_id = 0 ; ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } } else { dec_slice_struct_t * ps_parse_cur_slice ; ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; if ( ps_dec -> u1_slice_header_done && ps_parse_cur_slice == ps_dec -> ps_parse_cur_slice ) { u1_num_mbs = ps_dec -> u4_num_mbs_cur_nmb ; if ( u1_num_mbs ) { ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs - 1 ; } else { if ( ps_dec -> u1_separate_parse ) { ps_cur_mb_info = ps_dec -> ps_nmb_info - 1 ; } else { ps_cur_mb_info = ps_dec -> ps_nmb_info + ps_dec -> u4_num_mbs_prev_nmb - 1 ; } } ps_dec -> u2_mby = ps_cur_mb_info -> u2_mby ; ps_dec -> u2_mbx = ps_cur_mb_info -> u2_mbx ; ps_dec -> u1_mb_ngbr_availablity = ps_cur_mb_info -> u1_mb_ngbr_availablity ; ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_prev_mb_parse_tu_coeff_data ; ps_dec -> u2_cur_mb_addr -- ; ps_dec -> i4_submb_ofst -= SUB_BLK_SIZE ; if ( u1_num_mbs ) { if ( ps_dec -> u1_pr_sl_type == P_SLICE || ps_dec -> u1_pr_sl_type == B_SLICE ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = 1 ; u1_tfr_n_mb = 1 ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } <S2SV_StartBug> ps_dec -> u1_mb_idx = 0 ; <S2SV_EndBug> ps_dec -> u4_num_mbs_cur_nmb = 0 ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; return 0 ; } ps_dec -> u2_cur_slice_num ++ ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; ps_dec -> ps_parse_cur_slice ++ ; } else { ps_dec -> ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; } } { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( volatile void * * ) pu1_buf ; } ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = ps_dec -> u2_total_mbs_coded << u1_mbaff ; if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ps_dec -> u2_prv_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> u2_total_mbs_coded << u1_mbaff ; ps_dec -> ps_parse_cur_slice -> u2_log2Y_crwd = ps_dec -> ps_cur_slice -> u2_log2Y_crwd ; if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_parse_cur_slice -> slice_type = P_SLICE ; ps_dec -> pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u1_slice_header_done = 2 ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; u1_num_mbs = u1_mb_idx ; u1_slice_end = 0 ; u1_tfr_n_mb = 0 ; u1_decode_nmb = 0 ; u1_num_mbsNby2 = 0 ; i2_cur_mb_addr = ps_dec -> u2_total_mbs_coded ; i2_mb_skip_run = num_mb_skip ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) break ; ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; if ( u1_mbaff ) ih264d_get_mb_info_cavlc_mbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; else ih264d_get_mb_info_cavlc_nonmbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) { ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; } ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> u1_sub_mb_num = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_mb_mc_mode = PRED_16x16 ; ps_cur_mb_info -> u1_cbp = 0 ; ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CAVLC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; i2_mb_skip_run -- ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; u1_num_mbs ++ ; <S2SV_StartBug> ps_dec -> u2_total_mbs_coded ++ ; <S2SV_EndBug> u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ! i2_mb_skip_run ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } <S2SV_StartBug> if ( u1_tfr_n_mb ) <S2SV_EndBug> u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice ; H264_DEC_DEBUG_PRINT ( \"Mbs<S2SV_blank>in<S2SV_blank>slice:<S2SV_blank>%d\\\\n\" , ps_dec -> ps_cur_slice -> u4_mbs_in_slice ) ; ps_dec -> u2_cur_slice_num ++ ; if ( ps_dec -> u4_first_slice_in_pic != 0 ) ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; ps_dec -> <S2SV_ModStart> u1_num_mbs ++ ; <S2SV_ModEnd> u1_num_mbsNby2 ++ ; <S2SV_ModStart> ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12994\n\n```\nCWE-125 static int bgp_attr_print ( netdissect_options * ndo , u_int atype , const u_char * pptr , u_int len ) { int i ; uint16_t af ; uint8_t safi , snpa , nhlen ; union { float f ; uint32_t i ; } bw ; int advance ; u_int tlen ; const u_char * tptr ; char buf [ MAXHOSTNAMELEN + 100 ] ; int as_size ; tptr = pptr ; tlen = len ; switch ( atype ) { case BGPTYPE_ORIGIN : if ( len != 1 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK ( * tptr ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_origin_values , \"Unknown<S2SV_blank>Origin<S2SV_blank>Typecode\" , tptr [ 0 ] ) ) ) ; } break ; case BGPTYPE_AS4_PATH : case BGPTYPE_AS_PATH : if ( len % 2 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } if ( ! len ) { ND_PRINT ( ( ndo , \"empty\" ) ) ; break ; } as_size = bgp_attr_get_as_size ( ndo , atype , pptr , len ) ; while ( tptr < pptr + len ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_open_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; for ( i = 0 ; i < tptr [ 1 ] * as_size ; i += as_size ) { ND_TCHECK2 ( tptr [ 2 + i ] , as_size ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , as_printf ( ndo , astostr , sizeof ( astostr ) , as_size == 2 ? EXTRACT_16BITS ( & tptr [ 2 + i ] ) : EXTRACT_32BITS ( & tptr [ 2 + i ] ) ) ) ) ; } ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_close_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; tptr += 2 + tptr [ 1 ] * as_size ; } break ; case BGPTYPE_NEXT_HOP : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; } break ; case BGPTYPE_MULTI_EXIT_DISC : case BGPTYPE_LOCAL_PREF : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( tptr ) ) ) ; } break ; case BGPTYPE_ATOMIC_AGGREGATE : if ( len != 0 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; case BGPTYPE_AGGREGATOR : if ( len != 6 && len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , len ) ; if ( len == 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_16BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 2 ) ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; } break ; case BGPTYPE_AGGREGATOR4 : if ( len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGPTYPE_COMMUNITIES : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint32_t comm ; ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; comm = EXTRACT_32BITS ( tptr ) ; switch ( comm ) { case BGP_COMMUNITY_NO_EXPORT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT\" ) ) ; break ; case BGP_COMMUNITY_NO_ADVERT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_ADVERTISE\" ) ) ; break ; case BGP_COMMUNITY_NO_EXPORT_SUBCONFED : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT_SUBCONFED\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%u:%u%s\" , ( comm >> 16 ) & 0xffff , comm & 0xffff , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; break ; } tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_ORIGINATOR_ID : if ( len != 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGPTYPE_CLUSTER_LIST : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s%s\" , ipaddr_string ( ndo , tptr ) , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_MP_REACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; goto done ; break ; } tptr += 3 ; ND_TCHECK ( tptr [ 0 ] ) ; nhlen = tptr [ 0 ] ; tlen = nhlen ; tptr ++ ; if ( tlen ) { int nnh = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>nexthop:<S2SV_blank>\" ) ) ; while ( tlen > 0 ) { if ( nnh ++ > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; } switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in_addr ) ; tptr += sizeof ( struct in_addr ) ; } break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : if ( tlen < ( int ) sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in6_addr ) ; tptr += sizeof ( struct in6_addr ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= ( sizeof ( struct in_addr ) ) ; tptr += ( sizeof ( struct in_addr ) ) ; } break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"%s\" , isonsap_string ( ndo , tptr , tlen ) ) ) ; tptr += tlen ; tlen = 0 ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < BGP_VPN_RD_LEN + 1 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , isonsap_string ( ndo , tptr + BGP_VPN_RD_LEN , tlen - BGP_VPN_RD_LEN ) ) ) ; if ( EXTRACT_32BITS ( tptr + BGP_VPN_RD_LEN ) == 0x47000601 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN + 4 ) ) ) ; else if ( EXTRACT_24BITS ( tptr + BGP_VPN_RD_LEN ) == 0x350000 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN + 3 ) ) ) ; tptr += tlen ; tlen = 0 ; } break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u/SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; tptr += tlen ; tlen = 0 ; goto done ; break ; } } } ND_PRINT ( ( ndo , \",<S2SV_blank>nh-length:<S2SV_blank>%u\" , nhlen ) ) ; tptr += tlen ; ND_TCHECK ( tptr [ 0 ] ) ; snpa = tptr [ 0 ] ; tptr ++ ; if ( snpa ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>SNPA\" , snpa ) ) ; for ( ; snpa > 0 ; snpa -- ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d<S2SV_blank>bytes\" , tptr [ 0 ] ) ) ; tptr += tptr [ 0 ] + 1 ; } } else { ND_PRINT ( ( ndo , \",<S2SV_blank>no<S2SV_blank>SNPA\" ) ) ; } while ( len - ( tptr - pptr ) > 0 ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : advance = decode_rt_routing_info ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * tptr , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } done : break ; case BGPTYPE_MP_UNREACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , BGP_MP_NLRI_MINSIZE ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; if ( len == BGP_MP_NLRI_MINSIZE ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>End-of-Rib<S2SV_blank>Marker<S2SV_blank>(empty<S2SV_blank>NLRI)\" ) ) ; tptr += 3 ; while ( len - ( tptr - pptr ) > 0 ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * ( tptr - 3 ) , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr - 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } break ; case BGPTYPE_EXTD_COMMUNITIES : if ( len % 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint16_t extd_comm ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; extd_comm = EXTRACT_16BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>Flags<S2SV_blank>[%s]\" , tok2str ( bgp_extd_comm_subtype_values , \"unknown<S2SV_blank>extd<S2SV_blank>community<S2SV_blank>typecode\" , extd_comm ) , extd_comm , bittok2str ( bgp_extd_comm_flag_values , \"none\" , extd_comm ) ) ) ; ND_TCHECK2 ( * ( tptr + 2 ) , 6 ) ; switch ( extd_comm ) { case BGP_EXT_COM_RT_0 : case BGP_EXT_COM_RO_0 : case BGP_EXT_COM_L2VPN_RT_0 : ND_PRINT ( ( ndo , \":<S2SV_blank>%u:%u<S2SV_blank>(=<S2SV_blank>%s)\" , EXTRACT_16BITS ( tptr + 2 ) , EXTRACT_32BITS ( tptr + 4 ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_RT_1 : case BGP_EXT_COM_RO_1 : case BGP_EXT_COM_L2VPN_RT_1 : case BGP_EXT_COM_VRF_RT_IMP : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , ipaddr_string ( ndo , tptr + 2 ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_RT_2 : case BGP_EXT_COM_RO_2 : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr + 2 ) ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_LINKBAND : bw . i = EXTRACT_32BITS ( tptr + 2 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case BGP_EXT_COM_VPN_ORIGIN : case BGP_EXT_COM_VPN_ORIGIN2 : case BGP_EXT_COM_VPN_ORIGIN3 : case BGP_EXT_COM_VPN_ORIGIN4 : case BGP_EXT_COM_OSPF_RID : case BGP_EXT_COM_OSPF_RID2 : ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr + 2 ) ) ) ; break ; case BGP_EXT_COM_OSPF_RTYPE : case BGP_EXT_COM_OSPF_RTYPE2 : ND_PRINT ( ( ndo , \":<S2SV_blank>area:%s,<S2SV_blank>router-type:%s,<S2SV_blank>metric-type:%s%s\" , ipaddr_string ( ndo , tptr + 2 ) , tok2str ( bgp_extd_comm_ospf_rtype_values , \"unknown<S2SV_blank>(0x%02x)\" , * ( tptr + 6 ) ) , ( * ( tptr + 7 ) & BGP_OSPF_RTYPE_METRIC_TYPE ) ? \"E2\" : \"\" , ( ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_EXT ) || ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_NSSA ) ) ? \"E1\" : \"\" ) ) ; break ; case BGP_EXT_COM_L2INFO : ND_PRINT ( ( ndo , \":<S2SV_blank>%s<S2SV_blank>Control<S2SV_blank>Flags<S2SV_blank>[0x%02x]:MTU<S2SV_blank>%u\" , tok2str ( l2vpn_encaps_values , \"unknown<S2SV_blank>encaps\" , * ( tptr + 2 ) ) , * ( tptr + 3 ) , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_SOURCE_AS : ND_PRINT ( ( ndo , \":<S2SV_blank>AS<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 2 ) ) ) ; break ; default : ND_TCHECK2 ( * tptr , 8 ) ; print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , 8 ) ; break ; } tlen -= 8 ; tptr += 8 ; } break ; case BGPTYPE_PMSI_TUNNEL : { uint8_t tunnel_type , flags ; tunnel_type = * ( tptr + 1 ) ; flags = * tptr ; tlen = len ; ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>MPLS<S2SV_blank>Label<S2SV_blank>%u\" , tok2str ( bgp_pmsi_tunnel_values , \"Unknown\" , tunnel_type ) , tunnel_type , bittok2str ( bgp_pmsi_flag_values , \"none\" , flags ) , EXTRACT_24BITS ( tptr + 2 ) >> 4 ) ) ; tptr += 5 ; tlen -= 5 ; switch ( tunnel_type ) { case BGP_PMSI_TUNNEL_PIM_SM : case BGP_PMSI_TUNNEL_PIM_BIDIR : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sender<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_PIM_SSM : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_INGRESS : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-Endpoint<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGP_PMSI_TUNNEL_LDP_P2MP : case BGP_PMSI_TUNNEL_LDP_MP2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>LSP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_RSVP_P2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended-Tunnel-ID<S2SV_blank>%s,<S2SV_blank>P2MP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; } } break ; } case BGPTYPE_AIGP : { uint8_t type ; uint16_t length ; <S2SV_StartBug> ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; <S2SV_EndBug> <S2SV_StartBug> tlen = len ; <S2SV_EndBug> while ( tlen >= 3 ) { type = * tptr ; length = EXTRACT_16BITS ( tptr + 1 ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , <S2SV_EndBug> tok2str ( bgp_aigp_values , \"Unknown\" , type ) , <S2SV_StartBug> type , length ) ) ; <S2SV_EndBug> <S2SV_StartBug> ND_TCHECK2 ( tptr [ 3 ] , length - 3 ) ; <S2SV_EndBug> switch ( type ) { case BGP_AIGP_TLV : <S2SV_StartBug> ND_TCHECK2 ( tptr [ 3 ] , 8 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \",<S2SV_blank>metric<S2SV_blank>%\" PRIu64 , <S2SV_StartBug> EXTRACT_64BITS ( tptr + 3 ) ) ) ; <S2SV_EndBug> break ; default : if ( ndo -> ndo_vflag <= 1 ) { <S2SV_StartBug> print_unknown_data ( ndo , tptr + 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length - 3 ) ; <S2SV_EndBug> } } tptr += length ; tlen -= length ; } break ; } case BGPTYPE_ATTR_SET : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Origin<S2SV_blank>AS:<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) ) ) ; tptr += 4 ; len -= 4 ; while ( len ) { u_int aflags , alenlen , alen ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; if ( len < 2 ) goto trunc ; aflags = * tptr ; atype = * ( tptr + 1 ) ; tptr += 2 ; len -= 2 ; alenlen = bgp_attr_lenlen ( aflags , tptr ) ; ND_TCHECK2 ( tptr [ 0 ] , alenlen ) ; if ( len < alenlen ) goto trunc ; alen = bgp_attr_len ( aflags , tptr ) ; tptr += alenlen ; len -= alenlen ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_attr_values , \"Unknown<S2SV_blank>Attribute\" , atype ) , atype , alen ) ) ; if ( aflags ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s%s%s%s\" , aflags & 0x80 ? \"O\" : \"\" , aflags & 0x40 ? \"T\" : \"\" , aflags & 0x20 ? \"P\" : \"\" , aflags & 0x10 ? \"E\" : \"\" ) ) ; if ( aflags & 0xf ) ND_PRINT ( ( ndo , \"+%x\" , aflags & 0xf ) ) ; ND_PRINT ( ( ndo , \"]:<S2SV_blank>\" ) ) ; } if ( ! bgp_attr_print ( ndo , atype , tptr , alen ) ) return 0 ; tptr += alen ; len -= alen ; } break ; case BGPTYPE_LARGE_COMMUNITY : if ( len == 0 || len % 12 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; while ( len > 0 ) { ND_TCHECK2 ( * tptr , 12 ) ; ND_PRINT ( ( ndo , \"%u:%u:%u%s\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , ( len > 12 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tptr += 12 ; len -= 12 ; } break ; default : ND_TCHECK2 ( * pptr , len ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>Attribute<S2SV_blank>%u<S2SV_blank>decoder\" , atype ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; break ; } if ( ndo -> ndo_vflag > 1 && len ) { ND_TCHECK2 ( * pptr , len ) ; print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; } return 1 ; trunc : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint16_t length ; tlen = len ; while ( tlen >= 3 ) { <S2SV_ModStart> 3 ) ; <S2SV_ModEnd> type = * <S2SV_ModStart> 1 ) ; tptr += 3 ; tlen -= 3 ; <S2SV_ModStart> length ) ) ; if ( length < 3 ) goto trunc ; length -= 3 <S2SV_ModStart> ] , length <S2SV_ModEnd> ) ; switch <S2SV_ModStart> case BGP_AIGP_TLV : if ( length < 8 ) goto trunc <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> EXTRACT_64BITS ( tptr <S2SV_ModEnd> ) ) ) <S2SV_ModStart> ndo , tptr <S2SV_ModEnd> , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , <S2SV_ModStart> \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5287\n\n```\nCWE-59 int main ( int argc , char * * argv ) { int fd = xopen ( \"/dev/null\" , O_RDWR ) ; while ( fd < 2 ) fd = xdup ( fd ) ; if ( fd > 2 ) close ( fd ) ; int err = 1 ; logmode = LOGMODE_JOURNAL ; load_abrt_conf ( ) ; bool setting_MakeCompatCore ; bool setting_SaveBinaryImage ; bool setting_SaveFullCore ; bool setting_CreateCoreBacktrace ; bool setting_SaveContainerizedPackageData ; bool setting_StandaloneHook ; { map_string_t * settings = new_map_string ( ) ; load_abrt_plugin_conf_file ( \"CCpp.conf\" , settings ) ; const char * value ; value = get_map_string_item_or_NULL ( settings , \"MakeCompatCore\" ) ; setting_MakeCompatCore = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"SaveBinaryImage\" ) ; setting_SaveBinaryImage = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"SaveFullCore\" ) ; setting_SaveFullCore = value ? string_to_bool ( value ) : true ; value = get_map_string_item_or_NULL ( settings , \"CreateCoreBacktrace\" ) ; setting_CreateCoreBacktrace = value ? string_to_bool ( value ) : true ; value = get_map_string_item_or_NULL ( settings , \"SaveContainerizedPackageData\" ) ; setting_SaveContainerizedPackageData = value && string_to_bool ( value ) ; if ( ! g_settings_explorechroots ) { if ( setting_SaveContainerizedPackageData ) log_warning ( \"Ignoring<S2SV_blank>SaveContainerizedPackageData<S2SV_blank>because<S2SV_blank>ExploreChroots<S2SV_blank>is<S2SV_blank>disabled\" ) ; setting_SaveContainerizedPackageData = false ; } value = get_map_string_item_or_NULL ( settings , \"StandaloneHook\" ) ; setting_StandaloneHook = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"VerboseLog\" ) ; if ( value ) g_verbose = xatoi_positive ( value ) ; free_map_string ( settings ) ; } if ( argc == 2 && strcmp ( argv [ 1 ] , \"--config-test\" ) ) return test_configuration ( setting_SaveFullCore , setting_CreateCoreBacktrace ) ; if ( argc < 8 ) { error_msg_and_die ( \"Usage:<S2SV_blank>%s<S2SV_blank>SIGNO<S2SV_blank>CORE_SIZE_LIMIT<S2SV_blank>PID<S2SV_blank>UID<S2SV_blank>GID<S2SV_blank>TIME<S2SV_blank>BINARY_NAME<S2SV_blank>GLOBAL_PID<S2SV_blank>[TID]\" , argv [ 0 ] ) ; } if ( strchr ( argv [ 1 ] , '<S2SV_blank>' ) ) { int i ; for ( i = 1 ; argv [ i ] ; i ++ ) { strchrnul ( argv [ i ] , '<S2SV_blank>' ) [ 0 ] = '\\\\0' ; } } errno = 0 ; const char * signal_str = argv [ 1 ] ; int signal_no = xatoi_positive ( signal_str ) ; off_t ulimit_c = strtoull ( argv [ 2 ] , NULL , 10 ) ; if ( ulimit_c < 0 ) { ulimit_c = ~ ( ( off_t ) 1 << ( sizeof ( off_t ) * 8 - 1 ) ) ; } const char * pid_str = argv [ 3 ] ; pid_t local_pid = xatoi_positive ( argv [ 3 ] ) ; uid_t uid = xatoi_positive ( argv [ 4 ] ) ; if ( errno || local_pid <= 0 ) { perror_msg_and_die ( \"PID<S2SV_blank>\\'%s\\'<S2SV_blank>or<S2SV_blank>limit<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>bogus\" , argv [ 3 ] , argv [ 2 ] ) ; } { char * s = xmalloc_fopen_fgetline_fclose ( VAR_RUN \"/abrt/saved_core_pattern\" ) ; if ( s && s [ 0 ] != '|' ) core_basename = s ; else free ( s ) ; } const char * global_pid_str = argv [ 8 ] ; pid_t pid = xatoi_positive ( argv [ 8 ] ) ; pid_t tid = - 1 ; const char * tid_str = argv [ 9 ] ; if ( tid_str ) { tid = xatoi_positive ( tid_str ) ; } char path [ PATH_MAX ] ; char * executable = get_executable ( pid ) ; if ( executable && strstr ( executable , \"/abrt-hook-ccpp\" ) ) { error_msg_and_die ( \"PID<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>\\'%s\\',<S2SV_blank>not<S2SV_blank>dumping<S2SV_blank>it<S2SV_blank>to<S2SV_blank>avoid<S2SV_blank>recursion\" , ( long ) pid , executable ) ; } user_pwd = get_cwd ( pid ) ; log_notice ( \"user_pwd:\\'%s\\'\" , user_pwd ) ; sprintf ( path , \"/proc/%lu/status\" , ( long ) pid ) ; char * proc_pid_status = xmalloc_xopen_read_close ( path , NULL ) ; uid_t fsuid = uid ; uid_t tmp_fsuid = get_fsuid ( proc_pid_status ) ; if ( tmp_fsuid < 0 ) perror_msg_and_die ( \"Can\\'t<S2SV_blank>parse<S2SV_blank>\\'Uid:<S2SV_blank>line\\'<S2SV_blank>in<S2SV_blank>/proc/%lu/status\" , ( long ) pid ) ; const int fsgid = get_fsgid ( proc_pid_status ) ; if ( fsgid < 0 ) error_msg_and_die ( \"Can\\'t<S2SV_blank>parse<S2SV_blank>\\'Gid:<S2SV_blank>line\\'<S2SV_blank>in<S2SV_blank>/proc/%lu/status\" , ( long ) pid ) ; int suid_policy = dump_suid_policy ( ) ; if ( tmp_fsuid != uid ) { fsuid = 0 ; if ( suid_policy == DUMP_SUID_UNSAFE ) fsuid = tmp_fsuid ; else { g_user_core_flags = O_EXCL ; g_need_nonrelative = 1 ; } } int user_core_fd = - 1 ; if ( setting_MakeCompatCore && ulimit_c != 0 ) user_core_fd = open_user_core ( uid , fsuid , fsgid , pid , & argv [ 1 ] ) ; if ( executable == NULL ) { error_msg ( \"Can\\'t<S2SV_blank>read<S2SV_blank>/proc/%lu/exe<S2SV_blank>link\" , ( long ) pid ) ; return create_user_core ( user_core_fd , pid , ulimit_c ) ; } const char * signame = NULL ; if ( ! signal_is_fatal ( signal_no , & signame ) ) return create_user_core ( user_core_fd , pid , ulimit_c ) ; const int abrtd_running = daemon_is_ok ( ) ; if ( ! setting_StandaloneHook && ! abrtd_running ) { log ( \"abrtd<S2SV_blank>is<S2SV_blank>not<S2SV_blank>running.<S2SV_blank>If<S2SV_blank>it<S2SV_blank>crashed,<S2SV_blank>\" \"/proc/sys/kernel/core_pattern<S2SV_blank>contains<S2SV_blank>a<S2SV_blank>stale<S2SV_blank>value,<S2SV_blank>\" \"consider<S2SV_blank>resetting<S2SV_blank>it<S2SV_blank>to<S2SV_blank>\\'core\\'\" ) ; return create_user_core ( user_core_fd , pid , ulimit_c ) ; } if ( setting_StandaloneHook ) ensure_writable_dir ( g_settings_dump_location , DEFAULT_DUMP_LOCATION_MODE , \"abrt\" ) ; if ( g_settings_nMaxCrashReportsSize > 0 ) { if ( low_free_space ( g_settings_nMaxCrashReportsSize , g_settings_dump_location ) ) return create_user_core ( user_core_fd , pid , ulimit_c ) ; } snprintf ( path , sizeof ( path ) , \"%s/last-ccpp\" , g_settings_dump_location ) ; if ( check_recent_crash_file ( path , executable ) ) { return create_user_core ( user_core_fd , pid , ulimit_c ) ; } const char * last_slash = strrchr ( executable , '/' ) ; if ( last_slash && strncmp ( ++ last_slash , \"abrt\" , 4 ) == 0 ) { if ( g_settings_debug_level == 0 ) { log_warning ( \"Ignoring<S2SV_blank>crash<S2SV_blank>of<S2SV_blank>%s<S2SV_blank>(SIG%s).\" , executable , signame ? signame : signal_str ) ; goto cleanup_and_exit ; } if ( snprintf ( path , sizeof ( path ) , \"%s/%s-coredump\" , g_settings_dump_location , last_slash ) >= sizeof ( path ) ) error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\':<S2SV_blank>truncated<S2SV_blank>long<S2SV_blank>file<S2SV_blank>path\" , path ) ; <S2SV_StartBug> int abrt_core_fd = xopen3 ( path , O_WRONLY | O_CREAT | O_TRUNC , 0600 ) ; <S2SV_EndBug> off_t core_size = copyfd_eof ( STDIN_FILENO , abrt_core_fd , COPYFD_SPARSE ) ; if ( core_size < 0 || fsync ( abrt_core_fd ) != 0 ) { unlink ( path ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } log_notice ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; err = 0 ; goto cleanup_and_exit ; } unsigned path_len = snprintf ( path , sizeof ( path ) , \"%s/ccpp-%s-%lu.new\" , g_settings_dump_location , iso_date_string ( NULL ) , ( long ) pid ) ; if ( path_len >= ( sizeof ( path ) - sizeof ( \"/\" FILENAME_COREDUMP ) ) ) { return create_user_core ( user_core_fd , pid , ulimit_c ) ; } dd = dd_create ( path , 0 , DEFAULT_DUMP_DIR_MODE ) ; if ( dd ) { char source_filename [ sizeof ( \"/proc/%lu/somewhat_long_name\" ) + sizeof ( long ) * 3 ] ; int source_base_ofs = sprintf ( source_filename , \"/proc/%lu/root\" , ( long ) pid ) ; source_base_ofs -= strlen ( \"root\" ) ; char * rootdir = process_has_own_root ( pid ) ? get_rootdir ( pid ) : NULL ; if ( g_settings_explorechroots ) { dd_create_basic_files ( dd , fsuid , ( rootdir != NULL ) ? source_filename : NULL ) ; } else { dd_create_basic_files ( dd , fsuid , NULL ) ; } char * dest_filename = concat_path_file ( dd -> dd_dirname , \"also_somewhat_longish_name\" ) ; char * dest_base = strrchr ( dest_filename , '/' ) + 1 ; strcpy ( source_filename + source_base_ofs , \"maps\" ) ; dd_copy_file ( dd , FILENAME_MAPS , source_filename ) ; strcpy ( source_filename + source_base_ofs , \"limits\" ) ; dd_copy_file ( dd , FILENAME_LIMITS , source_filename ) ; strcpy ( source_filename + source_base_ofs , \"cgroup\" ) ; dd_copy_file ( dd , FILENAME_CGROUP , source_filename ) ; strcpy ( source_filename + source_base_ofs , \"mountinfo\" ) ; dd_copy_file ( dd , FILENAME_MOUNTINFO , source_filename ) ; strcpy ( dest_base , FILENAME_OPEN_FDS ) ; strcpy ( source_filename + source_base_ofs , \"fd\" ) ; dump_fd_info_ext ( dest_filename , source_filename , dd -> dd_uid , dd -> dd_gid ) ; strcpy ( dest_base , FILENAME_NAMESPACES ) ; dump_namespace_diff_ext ( dest_filename , 1 , pid , dd -> dd_uid , dd -> dd_gid ) ; free ( dest_filename ) ; char * tmp = NULL ; get_env_variable ( pid , \"container\" , & tmp ) ; if ( tmp != NULL ) { dd_save_text ( dd , FILENAME_CONTAINER , tmp ) ; free ( tmp ) ; tmp = NULL ; } get_env_variable ( pid , \"container_uuid\" , & tmp ) ; if ( tmp != NULL ) { dd_save_text ( dd , FILENAME_CONTAINER_UUID , tmp ) ; free ( tmp ) ; } const int containerized = ( rootdir != NULL && strcmp ( rootdir , \"/\" ) == 0 ) ; if ( containerized ) { log_debug ( \"Process<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>considered<S2SV_blank>to<S2SV_blank>be<S2SV_blank>containerized\" , pid ) ; pid_t container_pid ; if ( get_pid_of_container ( pid , & container_pid ) == 0 ) { char * container_cmdline = get_cmdline ( container_pid ) ; dd_save_text ( dd , FILENAME_CONTAINER_CMDLINE , container_cmdline ) ; free ( container_cmdline ) ; } } dd_save_text ( dd , FILENAME_ANALYZER , \"abrt-ccpp\" ) ; dd_save_text ( dd , FILENAME_TYPE , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_EXECUTABLE , executable ) ; dd_save_text ( dd , FILENAME_PID , pid_str ) ; dd_save_text ( dd , FILENAME_GLOBAL_PID , global_pid_str ) ; dd_save_text ( dd , FILENAME_PROC_PID_STATUS , proc_pid_status ) ; if ( user_pwd ) dd_save_text ( dd , FILENAME_PWD , user_pwd ) ; if ( tid_str ) dd_save_text ( dd , FILENAME_TID , tid_str ) ; if ( rootdir ) { if ( strcmp ( rootdir , \"/\" ) != 0 ) dd_save_text ( dd , FILENAME_ROOTDIR , rootdir ) ; } free ( rootdir ) ; char * reason = xasprintf ( \"%s<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>SIG%s\" , last_slash , signame ? signame : signal_str ) ; dd_save_text ( dd , FILENAME_REASON , reason ) ; free ( reason ) ; char * cmdline = get_cmdline ( pid ) ; dd_save_text ( dd , FILENAME_CMDLINE , cmdline ? : \"\" ) ; free ( cmdline ) ; char * environ = get_environ ( pid ) ; dd_save_text ( dd , FILENAME_ENVIRON , environ ? : \"\" ) ; free ( environ ) ; char * fips_enabled = xmalloc_fopen_fgetline_fclose ( \"/proc/sys/crypto/fips_enabled\" ) ; if ( fips_enabled ) { if ( strcmp ( fips_enabled , \"0\" ) != 0 ) dd_save_text ( dd , \"fips_enabled\" , fips_enabled ) ; free ( fips_enabled ) ; } dd_save_text ( dd , FILENAME_ABRT_VERSION , VERSION ) ; long unsigned lck_bytes = ULONG_MAX ; const char * vmlck = strstr ( proc_pid_status , \"VmLck:\" ) ; if ( vmlck == NULL ) error_msg ( \"/proc/%s/status<S2SV_blank>does<S2SV_blank>not<S2SV_blank>contain<S2SV_blank>\\'VmLck:\\'<S2SV_blank>line\" , pid_str ) ; else if ( 1 != sscanf ( vmlck + 6 , \"%lu<S2SV_blank>kB\\\\n\" , & lck_bytes ) ) error_msg ( \"Failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>\\'VmLck:\\'<S2SV_blank>line<S2SV_blank>in<S2SV_blank>/proc/%s/status\" , pid_str ) ; if ( lck_bytes ) { log_notice ( \"Process<S2SV_blank>%s<S2SV_blank>of<S2SV_blank>user<S2SV_blank>%lu<S2SV_blank>has<S2SV_blank>locked<S2SV_blank>memory\" , pid_str , ( long unsigned ) uid ) ; dd_mark_as_notreportable ( dd , \"The<S2SV_blank>process<S2SV_blank>had<S2SV_blank>locked<S2SV_blank>memory<S2SV_blank>\" \"which<S2SV_blank>usually<S2SV_blank>indicates<S2SV_blank>efforts<S2SV_blank>to<S2SV_blank>protect<S2SV_blank>sensitive<S2SV_blank>\" \"data<S2SV_blank>(passwords)<S2SV_blank>from<S2SV_blank>being<S2SV_blank>written<S2SV_blank>to<S2SV_blank>disk.\\\\n\" \"In<S2SV_blank>order<S2SV_blank>to<S2SV_blank>avoid<S2SV_blank>sensitive<S2SV_blank>information<S2SV_blank>leakages,<S2SV_blank>\" \"ABRT<S2SV_blank>will<S2SV_blank>not<S2SV_blank>allow<S2SV_blank>you<S2SV_blank>to<S2SV_blank>report<S2SV_blank>this<S2SV_blank>problem<S2SV_blank>to<S2SV_blank>\" \"bug<S2SV_blank>tracking<S2SV_blank>tools\" ) ; } if ( setting_SaveBinaryImage ) { if ( save_crashing_binary ( pid , dd ) ) { error_msg ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; goto cleanup_and_exit ; } } off_t core_size = 0 ; if ( setting_SaveFullCore ) { strcpy ( path + path_len , \"/\" FILENAME_COREDUMP ) ; int abrt_core_fd = create_or_die ( path , user_core_fd ) ; core_size = copyfd_sparse ( STDIN_FILENO , abrt_core_fd , user_core_fd , ulimit_c ) ; close_user_core ( user_core_fd , core_size ) ; if ( fsync ( abrt_core_fd ) != 0 || close ( abrt_core_fd ) != 0 || core_size < 0 ) { unlink ( path ) ; error_msg ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , path ) ; goto cleanup_and_exit ; } } else { create_user_core ( user_core_fd , pid , ulimit_c ) ; } user_core_fd = - 1 ; # if 0 { char * java_log = xasprintf ( \"/tmp/jvm-%lu/hs_error.log\" , ( long ) pid ) ; int src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; if ( src_fd < 0 ) { java_log = xasprintf ( \"%s/hs_err_pid%lu.log\" , user_pwd , ( long ) pid ) ; src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; } if ( src_fd >= 0 ) { strcpy ( path + path_len , \"/hs_err.log\" ) ; int dst_fd = create_or_die ( path , user_core_fd ) ; off_t sz = copyfd_eof ( src_fd , dst_fd , COPYFD_SPARSE ) ; if ( close ( dst_fd ) != 0 || sz < 0 ) { error_msg ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; goto cleanup_and_exit ; } close ( src_fd ) ; } } # endif if ( tid > 0 && setting_CreateCoreBacktrace ) create_core_backtrace ( tid , executable , signal_no , dd ) ; dd_close ( dd ) ; dd = NULL ; path [ path_len ] = '\\\\0' ; if ( abrtd_running && setting_SaveContainerizedPackageData && containerized ) { sprintf ( source_filename , \"/proc/%lu/root\" , ( long ) pid ) ; const char * cmd_args [ 6 ] ; cmd_args [ 0 ] = BIN_DIR \"/abrt-action-save-package-data\" ; cmd_args [ 1 ] = \"-d\" ; cmd_args [ 2 ] = path ; cmd_args [ 3 ] = \"-r\" ; cmd_args [ 4 ] = source_filename ; cmd_args [ 5 ] = NULL ; pid_t pid = fork_execv_on_steroids ( 0 , ( char * * ) cmd_args , NULL , NULL , path , 0 ) ; int stat ; safe_waitpid ( pid , & stat , 0 ) ; } char * newpath = xstrndup ( path , path_len - ( sizeof ( \".new\" ) - 1 ) ) ; if ( rename ( path , newpath ) == 0 ) strcpy ( path , newpath ) ; free ( newpath ) ; if ( core_size > 0 ) log_notice ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; if ( abrtd_running ) notify_new_path ( path ) ; if ( g_settings_nMaxCrashReportsSize > 0 ) { unsigned maxsize = g_settings_nMaxCrashReportsSize + g_settings_nMaxCrashReportsSize / 4 ; maxsize |= 63 ; trim_problem_dirs ( g_settings_dump_location , maxsize * ( double ) ( 1024 * 1024 ) , path ) ; } err = 0 ; } else { return create_user_core ( user_core_fd , pid , ulimit_c ) ; } cleanup_and_exit : if ( dd ) dd_delete ( dd ) ; if ( user_core_fd >= 0 ) unlinkat ( dirfd ( proc_cwd ) , core_basename , 0 ) ; if ( proc_cwd != NULL ) closedir ( proc_cwd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> path ) ; unlink ( path ) ; <S2SV_ModStart> | O_CREAT | O_EXCL <S2SV_ModEnd> , 0600 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9438\n\n```\nCWE-674 int yyparse ( void * yyscanner , HEX_LEX_ENVIRONMENT * lex_env ) { int yychar ; YY_INITIAL_VALUE ( static YYSTYPE yyval_default ; ) YYSTYPE yylval YY_INITIAL_VALUE ( = yyval_default ) ; int yynerrs ; int yystate ; int yyerrstatus ; yytype_int16 yyssa [ YYINITDEPTH ] ; yytype_int16 * yyss ; yytype_int16 * yyssp ; YYSTYPE yyvsa [ YYINITDEPTH ] ; YYSTYPE * yyvs ; YYSTYPE * yyvsp ; YYSIZE_T yystacksize ; int yyn ; int yyresult ; int yytoken = 0 ; YYSTYPE yyval ; # if YYERROR_VERBOSE char yymsgbuf [ 128 ] ; char * yymsg = yymsgbuf ; YYSIZE_T yymsg_alloc = sizeof yymsgbuf ; # endif # define YYPOPSTACK ( N ) ( yyvsp -= ( N ) , yyssp -= ( N ) ) int yylen = 0 ; yyssp = yyss = yyssa ; yyvsp = yyvs = yyvsa ; yystacksize = YYINITDEPTH ; YYDPRINTF ( ( stderr , \"Starting<S2SV_blank>parse\\\\n\" ) ) ; yystate = 0 ; yyerrstatus = 0 ; yynerrs = 0 ; yychar = YYEMPTY ; goto yysetstate ; yynewstate : yyssp ++ ; yysetstate : * yyssp = yystate ; if ( yyss + yystacksize - 1 <= yyssp ) { YYSIZE_T yysize = yyssp - yyss + 1 ; # ifdef yyoverflow { YYSTYPE * yyvs1 = yyvs ; yytype_int16 * yyss1 = yyss ; yyoverflow ( YY_ ( \"memory<S2SV_blank>exhausted\" ) , & yyss1 , yysize * sizeof ( * yyssp ) , & yyvs1 , yysize * sizeof ( * yyvsp ) , & yystacksize ) ; yyss = yyss1 ; yyvs = yyvs1 ; } # else # ifndef YYSTACK_RELOCATE goto yyexhaustedlab ; # else if ( YYMAXDEPTH <= yystacksize ) goto yyexhaustedlab ; yystacksize *= 2 ; if ( YYMAXDEPTH < yystacksize ) yystacksize = YYMAXDEPTH ; { yytype_int16 * yyss1 = yyss ; union yyalloc * yyptr = ( union yyalloc * ) YYSTACK_ALLOC ( YYSTACK_BYTES ( yystacksize ) ) ; if ( ! yyptr ) goto yyexhaustedlab ; YYSTACK_RELOCATE ( yyss_alloc , yyss ) ; YYSTACK_RELOCATE ( yyvs_alloc , yyvs ) ; # undef YYSTACK_RELOCATE if ( yyss1 != yyssa ) YYSTACK_FREE ( yyss1 ) ; } # endif # endif yyssp = yyss + yysize - 1 ; yyvsp = yyvs + yysize - 1 ; YYDPRINTF ( ( stderr , \"Stack<S2SV_blank>size<S2SV_blank>increased<S2SV_blank>to<S2SV_blank>%lu\\\\n\" , ( unsigned long int ) yystacksize ) ) ; if ( yyss + yystacksize - 1 <= yyssp ) YYABORT ; } YYDPRINTF ( ( stderr , \"Entering<S2SV_blank>state<S2SV_blank>%d\\\\n\" , yystate ) ) ; if ( yystate == YYFINAL ) YYACCEPT ; goto yybackup ; yybackup : yyn = yypact [ yystate ] ; if ( yypact_value_is_default ( yyn ) ) goto yydefault ; if ( yychar == YYEMPTY ) { YYDPRINTF ( ( stderr , \"Reading<S2SV_blank>a<S2SV_blank>token:<S2SV_blank>\" ) ) ; yychar = yylex ( & yylval , yyscanner , lex_env ) ; } if ( yychar <= YYEOF ) { yychar = yytoken = YYEOF ; YYDPRINTF ( ( stderr , \"Now<S2SV_blank>at<S2SV_blank>end<S2SV_blank>of<S2SV_blank>input.\\\\n\" ) ) ; } else { yytoken = YYTRANSLATE ( yychar ) ; YY_SYMBOL_PRINT ( \"Next<S2SV_blank>token<S2SV_blank>is\" , yytoken , & yylval , & yylloc ) ; } yyn += yytoken ; if ( yyn < 0 || YYLAST < yyn || yycheck [ yyn ] != yytoken ) goto yydefault ; yyn = yytable [ yyn ] ; if ( yyn <= 0 ) { if ( yytable_value_is_error ( yyn ) ) goto yyerrlab ; yyn = - yyn ; goto yyreduce ; } if ( yyerrstatus ) yyerrstatus -- ; YY_SYMBOL_PRINT ( \"Shifting\" , yytoken , & yylval , & yylloc ) ; yychar = YYEMPTY ; yystate = yyn ; YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN * ++ yyvsp = yylval ; YY_IGNORE_MAYBE_UNINITIALIZED_END goto yynewstate ; yydefault : yyn = yydefact [ yystate ] ; if ( yyn == 0 ) goto yyerrlab ; goto yyreduce ; yyreduce : yylen = yyr2 [ yyn ] ; yyval = yyvsp [ 1 - yylen ] ; YY_REDUCE_PRINT ( yyn ) ; switch ( yyn ) { case 2 : <S2SV_StartBug> # line 106 \"hex_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast = yyget_extra ( yyscanner ) ; re_ast -> root_node = ( yyvsp [ - 1 ] . re_node ) ; } <S2SV_StartBug> # line 1330 \"hex_grammar.c\" <S2SV_EndBug> break ; case 3 : <S2SV_StartBug> # line 115 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1338 \"hex_grammar.c\" <S2SV_EndBug> break ; case 4 : <S2SV_StartBug> # line 119 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_CONCAT , ( yyvsp [ - 1 ] . re_node ) , ( yyvsp [ 0 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ 0 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1351 \"hex_grammar.c\" <S2SV_EndBug> break ; case 5 : <S2SV_StartBug> # line 128 \"hex_grammar.y\" <S2SV_EndBug> { RE_NODE * new_concat ; RE_NODE * leftmost_concat = NULL ; <S2SV_StartBug> RE_NODE * leftmost_node = ( yyvsp [ - 1 ] . re_node ) ; <S2SV_EndBug> ( yyval . re_node ) = NULL ; while ( leftmost_node -> type == RE_NODE_CONCAT ) { leftmost_concat = leftmost_node ; leftmost_node = leftmost_node -> left ; } new_concat = yr_re_node_create ( RE_NODE_CONCAT , ( yyvsp [ - 2 ] . re_node ) , leftmost_node ) ; if ( new_concat != NULL ) { if ( leftmost_concat != NULL ) { leftmost_concat -> left = new_concat ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_CONCAT , ( yyvsp [ - 1 ] . re_node ) , ( yyvsp [ 0 ] . re_node ) ) ; } else { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_CONCAT , new_concat , ( yyvsp [ 0 ] . re_node ) ) ; } } DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 2 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ 0 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1413 \"hex_grammar.c\" <S2SV_EndBug> break ; case 6 : <S2SV_StartBug> # line 190 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1421 \"hex_grammar.c\" <S2SV_EndBug> break ; case 7 : <S2SV_StartBug> # line 194 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_CONCAT , ( yyvsp [ - 1 ] . re_node ) , ( yyvsp [ 0 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ 0 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1434 \"hex_grammar.c\" <S2SV_EndBug> break ; case 8 : <S2SV_StartBug> # line 207 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1442 \"hex_grammar.c\" <S2SV_EndBug> break ; case 9 : <S2SV_StartBug> # line 211 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; ( yyval . re_node ) -> greedy = FALSE ; } <S2SV_StartBug> # line 1451 \"hex_grammar.c\" <S2SV_EndBug> break ; case 10 : <S2SV_StartBug> # line 220 \"hex_grammar.y\" <S2SV_EndBug> { lex_env -> token_count ++ ; if ( lex_env -> token_count > MAX_HEX_STRING_TOKENS ) { yr_re_node_destroy ( ( yyvsp [ 0 ] . re_node ) ) ; yyerror ( yyscanner , lex_env , \"string<S2SV_blank>too<S2SV_blank>long\" ) ; YYABORT ; } ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1468 \"hex_grammar.c\" <S2SV_EndBug> break ; case 11 : <S2SV_StartBug> # line 233 \"hex_grammar.y\" <S2SV_EndBug> { lex_env -> inside_or ++ ; } <S2SV_StartBug> # line 1476 \"hex_grammar.c\" <S2SV_EndBug> break ; case 12 : <S2SV_StartBug> # line 237 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ - 1 ] . re_node ) ; lex_env -> inside_or -- ; } <S2SV_StartBug> # line 1485 \"hex_grammar.c\" <S2SV_EndBug> break ; case 13 : <S2SV_StartBug> # line 246 \"hex_grammar.y\" <S2SV_EndBug> { if ( ( yyvsp [ - 1 ] . integer ) <= 0 ) { yyerror ( yyscanner , lex_env , \"invalid<S2SV_blank>jump<S2SV_blank>length\" ) ; YYABORT ; } if ( lex_env -> inside_or && ( yyvsp [ - 1 ] . integer ) > STRING_CHAINING_THRESHOLD ) { yyerror ( yyscanner , lex_env , \"jumps<S2SV_blank>over<S2SV_blank>\" STR ( STRING_CHAINING_THRESHOLD ) \"<S2SV_blank>now<S2SV_blank>allowed<S2SV_blank>inside<S2SV_blank>alternation<S2SV_blank>(|)\" ) ; YYABORT ; } ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE_ANY , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> start = ( int ) ( yyvsp [ - 1 ] . integer ) ; ( yyval . re_node ) -> end = ( int ) ( yyvsp [ - 1 ] . integer ) ; } <S2SV_StartBug> # line 1512 \"hex_grammar.c\" <S2SV_EndBug> break ; case 14 : <S2SV_StartBug> # line 269 \"hex_grammar.y\" <S2SV_EndBug> { if ( lex_env -> inside_or && ( ( yyvsp [ - 3 ] . integer ) > STRING_CHAINING_THRESHOLD || ( yyvsp [ - 1 ] . integer ) > STRING_CHAINING_THRESHOLD ) ) { yyerror ( yyscanner , lex_env , \"jumps<S2SV_blank>over<S2SV_blank>\" STR ( STRING_CHAINING_THRESHOLD ) \"<S2SV_blank>now<S2SV_blank>allowed<S2SV_blank>inside<S2SV_blank>alternation<S2SV_blank>(|)\" ) ; YYABORT ; } if ( ( yyvsp [ - 3 ] . integer ) < 0 || ( yyvsp [ - 1 ] . integer ) < 0 ) { yyerror ( yyscanner , lex_env , \"invalid<S2SV_blank>negative<S2SV_blank>jump<S2SV_blank>length\" ) ; YYABORT ; } if ( ( yyvsp [ - 3 ] . integer ) > ( yyvsp [ - 1 ] . integer ) ) { yyerror ( yyscanner , lex_env , \"invalid<S2SV_blank>jump<S2SV_blank>range\" ) ; YYABORT ; } ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE_ANY , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> start = ( int ) ( yyvsp [ - 3 ] . integer ) ; ( yyval . re_node ) -> end = ( int ) ( yyvsp [ - 1 ] . integer ) ; } <S2SV_StartBug> # line 1548 \"hex_grammar.c\" <S2SV_EndBug> break ; case 15 : <S2SV_StartBug> # line 301 \"hex_grammar.y\" <S2SV_EndBug> { if ( lex_env -> inside_or ) { yyerror ( yyscanner , lex_env , \"unbounded<S2SV_blank>jumps<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>inside<S2SV_blank>alternation<S2SV_blank>(|)\" ) ; YYABORT ; } if ( ( yyvsp [ - 2 ] . integer ) < 0 ) { yyerror ( yyscanner , lex_env , \"invalid<S2SV_blank>negative<S2SV_blank>jump<S2SV_blank>length\" ) ; YYABORT ; } ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE_ANY , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> start = ( int ) ( yyvsp [ - 2 ] . integer ) ; ( yyval . re_node ) -> end = INT_MAX ; } <S2SV_StartBug> # line 1574 \"hex_grammar.c\" <S2SV_EndBug> break ; case 16 : <S2SV_StartBug> # line 323 \"hex_grammar.y\" <S2SV_EndBug> { if ( lex_env -> inside_or ) { yyerror ( yyscanner , lex_env , \"unbounded<S2SV_blank>jumps<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>inside<S2SV_blank>alternation<S2SV_blank>(|)\" ) ; YYABORT ; } ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE_ANY , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> start = 0 ; ( yyval . re_node ) -> end = INT_MAX ; } <S2SV_StartBug> # line 1594 \"hex_grammar.c\" <S2SV_EndBug> break ; case 17 : <S2SV_StartBug> # line 343 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1602 \"hex_grammar.c\" <S2SV_EndBug> break ; case 18 : <S2SV_StartBug> # line 347 \"hex_grammar.y\" <S2SV_EndBug> { mark_as_not_fast_regexp ( ) ; <S2SV_StartBug> ( yyval . re_node ) = yr_re_node_create ( RE_NODE_ALT , ( yyvsp [ - 2 ] . re_node ) , ( yyvsp [ 0 ] . re_node ) ) ; <S2SV_EndBug> DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 2 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ 0 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1617 \"hex_grammar.c\" <S2SV_EndBug> break ; case 19 : <S2SV_StartBug> # line 361 \"hex_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_LITERAL , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> value = ( int ) ( yyvsp [ 0 ] . integer ) ; } <S2SV_StartBug> # line 1629 \"hex_grammar.c\" <S2SV_EndBug> break ; case 20 : <S2SV_StartBug> # line 369 \"hex_grammar.y\" <S2SV_EndBug> { uint8_t mask = ( uint8_t ) ( ( yyvsp [ 0 ] . integer ) >> 8 ) ; if ( mask == 0x00 ) { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_ANY , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } else { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_MASKED_LITERAL , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> value = ( yyvsp [ 0 ] . integer ) & 0xFF ; ( yyval . re_node ) -> mask = mask ; } } <S2SV_StartBug> # line 1653 \"hex_grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> # line 1657 \"hex_grammar.c\" <S2SV_EndBug> default : break ; } YY_SYMBOL_PRINT ( \"-><S2SV_blank>$$<S2SV_blank>=\" , yyr1 [ yyn ] , & yyval , & yyloc ) ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; * ++ yyvsp = yyval ; yyn = yyr1 [ yyn ] ; yystate = yypgoto [ yyn - YYNTOKENS ] + * yyssp ; if ( 0 <= yystate && yystate <= YYLAST && yycheck [ yystate ] == * yyssp ) yystate = yytable [ yystate ] ; else yystate = yydefgoto [ yyn - YYNTOKENS ] ; goto yynewstate ; yyerrlab : yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE ( yychar ) ; if ( ! yyerrstatus ) { ++ yynerrs ; # if ! YYERROR_VERBOSE yyerror ( yyscanner , lex_env , YY_ ( \"syntax<S2SV_blank>error\" ) ) ; # else # define YYSYNTAX_ERROR yysyntax_error ( & yymsg_alloc , & yymsg , yyssp , yytoken ) { char const * yymsgp = YY_ ( \"syntax<S2SV_blank>error\" ) ; int yysyntax_error_status ; yysyntax_error_status = YYSYNTAX_ERROR ; if ( yysyntax_error_status == 0 ) yymsgp = yymsg ; else if ( yysyntax_error_status == 1 ) { if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; yymsg = ( char * ) YYSTACK_ALLOC ( yymsg_alloc ) ; if ( ! yymsg ) { yymsg = yymsgbuf ; yymsg_alloc = sizeof yymsgbuf ; yysyntax_error_status = 2 ; } else { yysyntax_error_status = YYSYNTAX_ERROR ; yymsgp = yymsg ; } } yyerror ( yyscanner , lex_env , yymsgp ) ; if ( yysyntax_error_status == 2 ) goto yyexhaustedlab ; } # undef YYSYNTAX_ERROR # endif } if ( yyerrstatus == 3 ) { if ( yychar <= YYEOF ) { if ( yychar == YYEOF ) YYABORT ; } else { yydestruct ( \"Error:<S2SV_blank>discarding\" , yytoken , & yylval , yyscanner , lex_env ) ; yychar = YYEMPTY ; } } goto yyerrlab1 ; yyerrorlab : if ( 0 ) goto yyerrorlab ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; yystate = * yyssp ; goto yyerrlab1 ; yyerrlab1 : yyerrstatus = 3 ; for ( ; ; ) { yyn = yypact [ yystate ] ; if ( ! yypact_value_is_default ( yyn ) ) { yyn += YYTERROR ; if ( 0 <= yyn && yyn <= YYLAST && yycheck [ yyn ] == YYTERROR ) { yyn = yytable [ yyn ] ; if ( 0 < yyn ) break ; } } if ( yyssp == yyss ) YYABORT ; yydestruct ( \"Error:<S2SV_blank>popping\" , yystos [ yystate ] , yyvsp , yyscanner , lex_env ) ; YYPOPSTACK ( 1 ) ; yystate = * yyssp ; YY_STACK_PRINT ( yyss , yyssp ) ; } YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN * ++ yyvsp = yylval ; YY_IGNORE_MAYBE_UNINITIALIZED_END YY_SYMBOL_PRINT ( \"Shifting\" , yystos [ yyn ] , yyvsp , yylsp ) ; yystate = yyn ; goto yynewstate ; yyacceptlab : yyresult = 0 ; goto yyreturn ; yyabortlab : yyresult = 1 ; goto yyreturn ; # if ! defined yyoverflow || YYERROR_VERBOSE yyexhaustedlab : yyerror ( yyscanner , lex_env , YY_ ( \"memory<S2SV_blank>exhausted\" ) ) ; yyresult = 2 ; # endif yyreturn : if ( yychar != YYEMPTY ) { yytoken = YYTRANSLATE ( yychar ) ; yydestruct ( \"Cleanup:<S2SV_blank>discarding<S2SV_blank>lookahead\" , yytoken , & yylval , yyscanner , lex_env ) ; } YYPOPSTACK ( yylen ) ; YY_STACK_PRINT ( yyss , yyssp ) ; while ( yyssp != yyss ) { yydestruct ( \"Cleanup:<S2SV_blank>popping\" , yystos [ * yyssp ] , yyvsp , yyscanner , lex_env ) ; YYPOPSTACK ( 1 ) ; } # ifndef yyoverflow if ( yyss != yyssa ) YYSTACK_FREE ( yyss ) ; # endif # if YYERROR_VERBOSE if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; # endif return yyresult ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : # line 113 <S2SV_ModEnd> \"hex_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1337 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 122 <S2SV_ModEnd> \"hex_grammar.y\" { ( <S2SV_ModStart> } # line 1345 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 126 \"hex_grammar.y\" { incr_ast_levels ( ) ; <S2SV_ModEnd> ( yyval . <S2SV_ModStart> } # line 1360 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 137 <S2SV_ModEnd> \"hex_grammar.y\" { RE_NODE <S2SV_ModStart> ] . re_node ) ; incr_ast_levels ( <S2SV_ModStart> } # line 1424 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 201 <S2SV_ModEnd> \"hex_grammar.y\" { ( <S2SV_ModStart> } # line 1432 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 205 \"hex_grammar.y\" { incr_ast_levels ( ) ; <S2SV_ModEnd> ( yyval . <S2SV_ModStart> } # line 1447 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 220 <S2SV_ModEnd> \"hex_grammar.y\" { ( <S2SV_ModStart> } # line 1455 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 224 <S2SV_ModEnd> \"hex_grammar.y\" { ( <S2SV_ModStart> } # line 1464 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 233 <S2SV_ModEnd> \"hex_grammar.y\" { lex_env <S2SV_ModStart> } # line 1481 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 246 <S2SV_ModEnd> \"hex_grammar.y\" { lex_env <S2SV_ModStart> } # line 1489 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 250 <S2SV_ModEnd> \"hex_grammar.y\" { ( <S2SV_ModStart> } # line 1498 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 259 <S2SV_ModEnd> \"hex_grammar.y\" { if <S2SV_ModStart> } # line 1525 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 282 <S2SV_ModEnd> \"hex_grammar.y\" { if <S2SV_ModStart> } # line 1561 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 314 <S2SV_ModEnd> \"hex_grammar.y\" { if <S2SV_ModStart> } # line 1587 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 336 <S2SV_ModEnd> \"hex_grammar.y\" { if <S2SV_ModStart> } # line 1607 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 356 <S2SV_ModEnd> \"hex_grammar.y\" { ( <S2SV_ModStart> } # line 1615 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 360 <S2SV_ModEnd> \"hex_grammar.y\" { mark_as_not_fast_regexp <S2SV_ModStart> ( ) ; incr_ast_levels ( ) ; <S2SV_ModStart> } # line 1631 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 375 <S2SV_ModEnd> \"hex_grammar.y\" { ( <S2SV_ModStart> } # line 1643 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 383 <S2SV_ModEnd> \"hex_grammar.y\" { uint8_t <S2SV_ModStart> } # line 1667 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> ; # line 1671 <S2SV_ModEnd> \"hex_grammar.c\" default :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6594\n\n```\nCWE-295 static krb5_error_code tgs_make_reply ( krb5_context context , krb5_kdc_configuration * config , KDC_REQ_BODY * b , krb5_const_principal tgt_name , const EncTicketPart * tgt , const krb5_keyblock * replykey , int rk_is_subkey , const EncryptionKey * serverkey , const krb5_keyblock * sessionkey , krb5_kvno kvno , AuthorizationData * auth_data , hdb_entry_ex * server , krb5_principal server_principal , const char * server_name , hdb_entry_ex * client , <S2SV_StartBug> krb5_principal client_principal , <S2SV_EndBug> hdb_entry_ex * krbtgt , krb5_enctype krbtgt_etype , krb5_principals spp , const krb5_data * rspac , const METHOD_DATA * enc_pa_data , const char * * e_text , krb5_data * reply ) { KDC_REP rep ; EncKDCRepPart ek ; EncTicketPart et ; KDCOptions f = b -> kdc_options ; krb5_error_code ret ; int is_weak = 0 ; memset ( & rep , 0 , sizeof ( rep ) ) ; memset ( & et , 0 , sizeof ( et ) ) ; memset ( & ek , 0 , sizeof ( ek ) ) ; rep . pvno = 5 ; rep . msg_type = krb_tgs_rep ; et . authtime = tgt -> authtime ; _kdc_fix_time ( & b -> till ) ; et . endtime = min ( tgt -> endtime , * b -> till ) ; ALLOC ( et . starttime ) ; * et . starttime = kdc_time ; ret = check_tgs_flags ( context , config , b , tgt , & et ) ; if ( ret ) goto out ; # define GLOBAL_FORCE_TRANSITED_CHECK ( config -> trpolicy == TRPOLICY_ALWAYS_CHECK ) # define GLOBAL_ALLOW_PER_PRINCIPAL ( config -> trpolicy == TRPOLICY_ALLOW_PER_PRINCIPAL ) # define GLOBAL_ALLOW_DISABLE_TRANSITED_CHECK ( config -> trpolicy == TRPOLICY_ALWAYS_HONOUR_REQUEST ) # define PRINCIPAL_FORCE_TRANSITED_CHECK ( P ) 0 # define PRINCIPAL_ALLOW_DISABLE_TRANSITED_CHECK ( P ) 0 ret = fix_transited_encoding ( context , config , ! f . disable_transited_check || GLOBAL_FORCE_TRANSITED_CHECK || PRINCIPAL_FORCE_TRANSITED_CHECK ( server ) || ! ( ( GLOBAL_ALLOW_PER_PRINCIPAL && PRINCIPAL_ALLOW_DISABLE_TRANSITED_CHECK ( server ) ) || GLOBAL_ALLOW_DISABLE_TRANSITED_CHECK ) , & tgt -> transited , & et , krb5_principal_get_realm ( context , client_principal ) , krb5_principal_get_realm ( context , server -> entry . principal ) , <S2SV_StartBug> krb5_principal_get_realm ( context , krbtgt -> entry . principal ) ) ; <S2SV_EndBug> if ( ret ) goto out ; copy_Realm ( & server_principal -> realm , & rep . ticket . realm ) ; _krb5_principal2principalname ( & rep . ticket . sname , server_principal ) ; copy_Realm ( & tgt_name -> realm , & rep . crealm ) ; copy_PrincipalName ( & tgt_name -> name , & rep . cname ) ; rep . ticket . tkt_vno = 5 ; ek . caddr = et . caddr ; { time_t life ; life = et . endtime - * et . starttime ; if ( client && client -> entry . max_life ) life = min ( life , * client -> entry . max_life ) ; if ( server -> entry . max_life ) life = min ( life , * server -> entry . max_life ) ; et . endtime = * et . starttime + life ; } if ( f . renewable_ok && tgt -> flags . renewable && et . renew_till == NULL && et . endtime < * b -> till && tgt -> renew_till != NULL ) { et . flags . renewable = 1 ; ALLOC ( et . renew_till ) ; * et . renew_till = * b -> till ; } if ( et . renew_till ) { time_t renew ; renew = * et . renew_till - * et . starttime ; if ( client && client -> entry . max_renew ) renew = min ( renew , * client -> entry . max_renew ) ; if ( server -> entry . max_renew ) renew = min ( renew , * server -> entry . max_renew ) ; * et . renew_till = * et . starttime + renew ; } if ( et . renew_till ) { * et . renew_till = min ( * et . renew_till , * tgt -> renew_till ) ; * et . starttime = min ( * et . starttime , * et . renew_till ) ; et . endtime = min ( et . endtime , * et . renew_till ) ; } * et . starttime = min ( * et . starttime , et . endtime ) ; if ( * et . starttime == et . endtime ) { ret = KRB5KDC_ERR_NEVER_VALID ; goto out ; } if ( et . renew_till && et . endtime == * et . renew_till ) { free ( et . renew_till ) ; et . renew_till = NULL ; et . flags . renewable = 0 ; } et . flags . pre_authent = tgt -> flags . pre_authent ; et . flags . hw_authent = tgt -> flags . hw_authent ; et . flags . anonymous = tgt -> flags . anonymous ; et . flags . ok_as_delegate = server -> entry . flags . ok_as_delegate ; if ( rspac -> length ) { ret = _kdc_tkt_add_if_relevant_ad ( context , & et , KRB5_AUTHDATA_WIN2K_PAC , rspac ) ; if ( ret ) goto out ; } if ( auth_data ) { unsigned int i = 0 ; if ( et . authorization_data == NULL ) { et . authorization_data = calloc ( 1 , sizeof ( * et . authorization_data ) ) ; if ( et . authorization_data == NULL ) { ret = ENOMEM ; krb5_set_error_message ( context , ret , \"malloc:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\" ) ; goto out ; } } for ( i = 0 ; i < auth_data -> len ; i ++ ) { ret = add_AuthorizationData ( et . authorization_data , & auth_data -> val [ i ] ) ; if ( ret ) { krb5_set_error_message ( context , ret , \"malloc:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\" ) ; goto out ; } } ret = find_KRB5SignedPath ( context , et . authorization_data , NULL ) ; if ( ret == 0 ) { if ( et . authorization_data -> len == 1 ) { free_AuthorizationData ( et . authorization_data ) ; free ( et . authorization_data ) ; et . authorization_data = NULL ; } else { AuthorizationData * ad = et . authorization_data ; free_AuthorizationDataElement ( & ad -> val [ ad -> len - 1 ] ) ; ad -> len -- ; } } } ret = krb5_copy_keyblock_contents ( context , sessionkey , & et . key ) ; if ( ret ) goto out ; et . crealm = tgt_name -> realm ; et . cname = tgt_name -> name ; ek . key = et . key ; ek . last_req . val = calloc ( 1 , sizeof ( * ek . last_req . val ) ) ; if ( ek . last_req . val == NULL ) { ret = ENOMEM ; goto out ; } ek . last_req . len = 1 ; ek . nonce = b -> nonce ; ek . flags = et . flags ; ek . authtime = et . authtime ; ek . starttime = et . starttime ; ek . endtime = et . endtime ; ek . renew_till = et . renew_till ; ek . srealm = rep . ticket . realm ; ek . sname = rep . ticket . sname ; _kdc_log_timestamp ( context , config , \"TGS-REQ\" , et . authtime , et . starttime , et . endtime , et . renew_till ) ; { char * r = get_krbtgt_realm ( & ek . sname ) ; if ( r == NULL || strcmp ( r , ek . srealm ) == 0 ) { ret = _kdc_add_KRB5SignedPath ( context , config , krbtgt , krbtgt_etype , client_principal , NULL , spp , & et ) ; if ( ret ) goto out ; } } if ( enc_pa_data -> len ) { rep . padata = calloc ( 1 , sizeof ( * rep . padata ) ) ; if ( rep . padata == NULL ) { ret = ENOMEM ; goto out ; } ret = copy_METHOD_DATA ( enc_pa_data , rep . padata ) ; if ( ret ) goto out ; } if ( krb5_enctype_valid ( context , serverkey -> keytype ) != 0 && _kdc_is_weak_exception ( server -> entry . principal , serverkey -> keytype ) ) { krb5_enctype_enable ( context , serverkey -> keytype ) ; is_weak = 1 ; } ret = _kdc_encode_reply ( context , config , NULL , 0 , & rep , & et , & ek , serverkey -> keytype , kvno , serverkey , 0 , replykey , rk_is_subkey , e_text , reply ) ; if ( is_weak ) krb5_enctype_disable ( context , serverkey -> keytype ) ; out : free_TGS_REP ( & rep ) ; free_TransitedEncoding ( & et . transited ) ; if ( et . starttime ) free ( et . starttime ) ; if ( et . renew_till ) free ( et . renew_till ) ; if ( et . authorization_data ) { free_AuthorizationData ( et . authorization_data ) ; free ( et . authorization_data ) ; } free_LastReq ( & ek . last_req ) ; memset ( et . key . keyvalue . data , 0 , et . key . keyvalue . length ) ; free_EncryptionKey ( & et . key ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , krb5_principal client_principal , const char * tgt_realm <S2SV_ModStart> principal ) , tgt_realm <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14360\n\n```\nCWE-119 int nntp_add_group ( char * line , void * data ) { struct NntpServer * nserv = data ; struct NntpData * nntp_data = NULL ; <S2SV_StartBug> char group [ LONG_STRING ] ; <S2SV_EndBug> char desc [ HUGE_STRING ] = \"\" ; char mod ; anum_t first , last ; if ( ! nserv || ! line ) return 0 ; <S2SV_StartBug> if ( sscanf ( line , \"%s<S2SV_blank>\" ANUM \"<S2SV_blank>\" ANUM \"<S2SV_blank>%c<S2SV_blank>%[^\\\\n]\" , group , & last , & first , & mod , desc ) < 4 ) <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> nntp_data = nntp_data_find ( nserv , group ) ; nntp_data -> deleted = false ; nntp_data -> first_message = first ; nntp_data -> last_message = last ; nntp_data -> allowed = ( mod == 'y' ) || ( mod == 'm' ) ; mutt_str_replace ( & nntp_data -> desc , desc ) ; if ( nntp_data -> newsrc_ent || nntp_data -> last_cached ) nntp_group_unread_stat ( nntp_data ) ; else if ( nntp_data -> last_message && nntp_data -> first_message <= nntp_data -> last_message ) nntp_data -> unread = nntp_data -> last_message - nntp_data -> first_message + 1 ; else nntp_data -> unread = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ LONG_STRING ] = \"\" <S2SV_ModStart> ( line , \"%1023s<S2SV_blank>\" <S2SV_ModEnd> ANUM \"<S2SV_blank>\" ANUM <S2SV_ModStart> ANUM \"<S2SV_blank>\" ANUM \"<S2SV_blank>%c<S2SV_blank>%8191[^\\\\n]\" <S2SV_ModEnd> , group , <S2SV_ModStart> < 4 ) { mutt_debug ( 4 , \"Cannot<S2SV_blank>parse<S2SV_blank>server<S2SV_blank>line:<S2SV_blank>%s\\\\n\" , line ) ; <S2SV_ModStart> return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2507\n\n```\nCWE-119 u32 h264bsdActivateParamSets ( storage_t * pStorage , u32 ppsId , u32 isIdr ) { u32 tmp ; u32 flag ; ASSERT ( pStorage ) ; ASSERT ( ppsId < MAX_NUM_PIC_PARAM_SETS ) ; if ( ( pStorage -> pps [ ppsId ] == NULL ) || ( pStorage -> sps [ pStorage -> pps [ ppsId ] -> seqParameterSetId ] == NULL ) ) { return ( HANTRO_NOK ) ; } tmp = CheckPps ( pStorage -> pps [ ppsId ] , pStorage -> sps [ pStorage -> pps [ ppsId ] -> seqParameterSetId ] ) ; if ( tmp != HANTRO_OK ) return ( tmp ) ; if ( pStorage -> activePpsId == MAX_NUM_PIC_PARAM_SETS ) { pStorage -> activePpsId = ppsId ; pStorage -> activePps = pStorage -> pps [ ppsId ] ; pStorage -> activeSpsId = pStorage -> activePps -> seqParameterSetId ; pStorage -> activeSps = pStorage -> sps [ pStorage -> activeSpsId ] ; <S2SV_StartBug> pStorage -> picSizeInMbs = <S2SV_EndBug> pStorage -> activeSps -> picWidthInMbs * <S2SV_StartBug> pStorage -> activeSps -> picHeightInMbs ; <S2SV_EndBug> pStorage -> currImage -> width = pStorage -> activeSps -> picWidthInMbs ; pStorage -> currImage -> height = pStorage -> activeSps -> picHeightInMbs ; pStorage -> pendingActivation = HANTRO_TRUE ; } else if ( pStorage -> pendingActivation ) { pStorage -> pendingActivation = HANTRO_FALSE ; FREE ( pStorage -> mb ) ; FREE ( pStorage -> sliceGroupMap ) ; ALLOCATE ( pStorage -> mb , pStorage -> picSizeInMbs , mbStorage_t ) ; ALLOCATE ( pStorage -> sliceGroupMap , pStorage -> picSizeInMbs , u32 ) ; if ( pStorage -> mb == NULL || pStorage -> sliceGroupMap == NULL ) return ( MEMORY_ALLOCATION_ERROR ) ; H264SwDecMemset ( pStorage -> mb , 0 , pStorage -> picSizeInMbs * sizeof ( mbStorage_t ) ) ; h264bsdInitMbNeighbours ( pStorage -> mb , pStorage -> activeSps -> picWidthInMbs , pStorage -> picSizeInMbs ) ; if ( pStorage -> noReordering || pStorage -> activeSps -> picOrderCntType == 2 || ( pStorage -> activeSps -> vuiParametersPresentFlag && pStorage -> activeSps -> vuiParameters -> bitstreamRestrictionFlag && ! pStorage -> activeSps -> vuiParameters -> numReorderFrames ) ) flag = HANTRO_TRUE ; else flag = HANTRO_FALSE ; tmp = h264bsdResetDpb ( pStorage -> dpb , pStorage -> activeSps -> picWidthInMbs * pStorage -> activeSps -> picHeightInMbs , pStorage -> activeSps -> maxDpbSize , pStorage -> activeSps -> numRefFrames , pStorage -> activeSps -> maxFrameNum , flag ) ; if ( tmp != HANTRO_OK ) return ( tmp ) ; } else if ( ppsId != pStorage -> activePpsId ) { if ( pStorage -> pps [ ppsId ] -> seqParameterSetId != pStorage -> activeSpsId ) { DEBUG ( ( \"SEQ<S2SV_blank>PARAM<S2SV_blank>SET<S2SV_blank>CHANGING...\\\\n\" ) ) ; if ( isIdr ) { pStorage -> activePpsId = ppsId ; pStorage -> activePps = pStorage -> pps [ ppsId ] ; pStorage -> activeSpsId = pStorage -> activePps -> seqParameterSetId ; pStorage -> activeSps = pStorage -> sps [ pStorage -> activeSpsId ] ; pStorage -> picSizeInMbs = pStorage -> activeSps -> picWidthInMbs * pStorage -> activeSps -> picHeightInMbs ; pStorage -> currImage -> width = pStorage -> activeSps -> picWidthInMbs ; pStorage -> currImage -> height = pStorage -> activeSps -> picHeightInMbs ; pStorage -> pendingActivation = HANTRO_TRUE ; } else { DEBUG ( ( \"TRYING<S2SV_blank>TO<S2SV_blank>CHANGE<S2SV_blank>SPS<S2SV_blank>IN<S2SV_blank>NON-IDR<S2SV_blank>SLICE\\\\n\" ) ) ; return ( HANTRO_NOK ) ; } } else { pStorage -> activePpsId = ppsId ; pStorage -> activePps = pStorage -> pps [ ppsId ] ; } } return ( HANTRO_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> activeSpsId ] ; if ( pStorage -> activeSps -> picWidthInMbs == 0 ) { pStorage -> picSizeInMbs = 0 ; } else if ( pStorage -> activeSps -> picHeightInMbs > UINT32_MAX / pStorage -> activeSps -> picWidthInMbs ) { return ( MEMORY_ALLOCATION_ERROR ) ; } else { <S2SV_ModStart> -> picHeightInMbs ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17852\n\n```\nCWE-119 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; <S2SV_StartBug> if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { <S2SV_EndBug> coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size ( & src_reg , 4 ) ; } smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; switch ( opcode ) { case BPF_ADD : if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : <S2SV_StartBug> if ( umax_val > 63 ) { <S2SV_EndBug> mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } if ( src_known ) dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_lshift ( tnum_unknown , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : <S2SV_StartBug> if ( umax_val > 63 ) { <S2SV_EndBug> mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( src_known ) dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_rshift ( tnum_unknown , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } <S2SV_StartBug> __reg_deduce_bounds ( dst_reg ) ; <S2SV_EndBug> __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , umax_val ; u64 insn_bitness = <S2SV_ModEnd> ( BPF_CLASS ( <S2SV_ModStart> -> code ) == BPF_ALU64 ) ? 64 : 32 ; <S2SV_ModEnd> smin_val = src_reg <S2SV_ModStart> if ( umax_val >= insn_bitness <S2SV_ModEnd> ) { mark_reg_unknown <S2SV_ModStart> if ( umax_val >= insn_bitness <S2SV_ModEnd> ) { mark_reg_unknown <S2SV_ModStart> break ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size ( & src_reg , 4 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10093\n\n```\nCWE-119 DECLAREreadFunc ( readContigTilesIntoBuffer ) { int status = 1 ; tsize_t tilesize = TIFFTileSize ( in ) ; tdata_t tilebuf ; uint32 imagew = TIFFScanlineSize ( in ) ; uint32 tilew = TIFFTileRowSize ( in ) ; <S2SV_StartBug> int iskew = imagew - tilew ; <S2SV_EndBug> uint8 * bufp = ( uint8 * ) buf ; uint32 tw , tl ; uint32 row ; ( void ) spp ; tilebuf = _TIFFmalloc ( tilesize ) ; if ( tilebuf == 0 ) return 0 ; _TIFFmemset ( tilebuf , 0 , tilesize ) ; ( void ) TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tw ) ; ( void ) TIFFGetField ( in , TIFFTAG_TILELENGTH , & tl ) ; for ( row = 0 ; row < imagelength ; row += tl ) { uint32 nrow = ( row + tl > imagelength ) ? imagelength - row : tl ; uint32 colb = 0 ; uint32 col ; for ( col = 0 ; col < imagewidth && colb < imagew ; col += tw ) { if ( TIFFReadTile ( in , tilebuf , col , row , 0 , 0 ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>tile<S2SV_blank>at<S2SV_blank>%lu<S2SV_blank>%lu\" , ( unsigned long ) col , ( unsigned long ) row ) ; status = 0 ; goto done ; } <S2SV_StartBug> if ( colb + tilew > imagew ) { <S2SV_EndBug> uint32 width = imagew - colb ; uint32 oskew = tilew - width ; cpStripToTile ( bufp + colb , tilebuf , nrow , width , oskew + iskew , oskew ) ; } else cpStripToTile ( bufp + colb , tilebuf , nrow , tilew , iskew , 0 ) ; colb += tilew ; } bufp += imagew * nrow ; } done : _TIFFfree ( tilebuf ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in ) ; int64 iskew = ( int64 ) imagew - ( int64 ) <S2SV_ModEnd> tilew ; uint8 <S2SV_ModStart> if ( colb > iskew <S2SV_ModEnd> ) { uint32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2017\n\n```\nCWE-399 int dev_forward_skb ( struct net_device * dev , struct sk_buff * skb ) { skb_orphan ( skb ) ; <S2SV_StartBug> if ( ! ( dev -> flags & IFF_UP ) ) <S2SV_EndBug> return NET_RX_DROP ; <S2SV_StartBug> if ( skb -> len > ( dev -> mtu + dev -> hard_header_len ) ) <S2SV_EndBug> <S2SV_StartBug> return NET_RX_DROP ; <S2SV_EndBug> skb_set_dev ( skb , dev ) ; skb -> tstamp . tv64 = 0 ; skb -> pkt_type = PACKET_HOST ; skb -> protocol = eth_type_trans ( skb , dev ) ; return netif_rx ( skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & IFF_UP ) || <S2SV_ModEnd> ( skb -> <S2SV_ModStart> hard_header_len ) ) ) { kfree_skb ( skb ) ; <S2SV_ModStart> return NET_RX_DROP ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9773\n\n```\nCWE-284 static void cs_cmd_flags ( sourceinfo_t * si , int parc , char * parv [ ] ) { chanacs_t * ca ; mowgli_node_t * n ; char * channel = parv [ 0 ] ; char * target = sstrdup ( parv [ 1 ] ) ; char * flagstr = parv [ 2 ] ; const char * str1 ; unsigned int addflags , removeflags , restrictflags ; hook_channel_acl_req_t req ; mychan_t * mc ; if ( parc < 1 ) { command_fail ( si , fault_needmoreparams , STR_INSUFFICIENT_PARAMS , \"FLAGS\" ) ; command_fail ( si , fault_needmoreparams , _ ( \"Syntax:<S2SV_blank>FLAGS<S2SV_blank><channel><S2SV_blank>[target]<S2SV_blank>[flags]\" ) ) ; return ; } mc = mychan_find ( channel ) ; if ( ! mc ) { command_fail ( si , fault_nosuch_target , _ ( \"Channel<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>is<S2SV_blank>not<S2SV_blank>registered.\" ) , channel ) ; return ; } if ( metadata_find ( mc , \"private:close:closer\" ) && ( target || ! has_priv ( si , PRIV_CHAN_AUSPEX ) ) ) { command_fail ( si , fault_noprivs , _ ( \"\\\\2%s\\\\2<S2SV_blank>is<S2SV_blank>closed.\" ) , channel ) ; return ; } if ( ! target || ( target && target [ 0 ] == '+' && flagstr == NULL ) ) { unsigned int flags = ( target != NULL ) ? flags_to_bitmask ( target , 0 ) : 0 ; do_list ( si , mc , flags ) ; return ; } <S2SV_StartBug> else if ( ! strcasecmp ( target , \"LIST\" ) && myentity_find_ext ( target ) == NULL ) <S2SV_EndBug> { do_list ( si , mc , 0 ) ; free ( target ) ; return ; } <S2SV_StartBug> else if ( ! strcasecmp ( target , \"CLEAR\" ) && myentity_find_ext ( target ) == NULL ) <S2SV_EndBug> { free ( target ) ; if ( ! chanacs_source_has_flag ( mc , si , CA_FOUNDER ) ) { command_fail ( si , fault_noprivs , \"You<S2SV_blank>are<S2SV_blank>not<S2SV_blank>authorized<S2SV_blank>to<S2SV_blank>perform<S2SV_blank>this<S2SV_blank>operation.\" ) ; return ; } mowgli_node_t * tn ; MOWGLI_ITER_FOREACH_SAFE ( n , tn , mc -> chanacs . head ) { ca = n -> data ; if ( ca -> level & CA_FOUNDER ) continue ; object_unref ( ca ) ; } logcommand ( si , CMDLOG_DO , \"CLEAR:FLAGS:<S2SV_blank>\\\\2%s\\\\2\" , mc -> name ) ; command_success_nodata ( si , _ ( \"Cleared<S2SV_blank>flags<S2SV_blank>in<S2SV_blank>\\\\2%s\\\\2.\" ) , mc -> name ) ; return ; } <S2SV_StartBug> else if ( ! strcasecmp ( target , \"MODIFY\" ) && myentity_find_ext ( target ) == NULL ) <S2SV_EndBug> { free ( target ) ; if ( parc < 3 ) { command_fail ( si , fault_needmoreparams , STR_INSUFFICIENT_PARAMS , \"FLAGS\" ) ; command_fail ( si , fault_needmoreparams , _ ( \"Syntax:<S2SV_blank>FLAGS<S2SV_blank><#channel><S2SV_blank>MODIFY<S2SV_blank>[target]<S2SV_blank><flags>\" ) ) ; return ; } flagstr = strchr ( parv [ 2 ] , '<S2SV_blank>' ) ; if ( flagstr ) * flagstr ++ = '\\\\0' ; target = strdup ( parv [ 2 ] ) ; } { myentity_t * mt ; if ( ! si -> smu ) { command_fail ( si , fault_noprivs , _ ( \"You<S2SV_blank>are<S2SV_blank>not<S2SV_blank>logged<S2SV_blank>in.\" ) ) ; return ; } if ( ! flagstr ) { if ( ! ( mc -> flags & MC_PUBACL ) && ! chanacs_source_has_flag ( mc , si , CA_ACLVIEW ) ) { command_fail ( si , fault_noprivs , _ ( \"You<S2SV_blank>are<S2SV_blank>not<S2SV_blank>authorized<S2SV_blank>to<S2SV_blank>execute<S2SV_blank>this<S2SV_blank>command.\" ) ) ; return ; } if ( validhostmask ( target ) ) ca = chanacs_find_host_literal ( mc , target , 0 ) ; else { if ( ! ( mt = myentity_find_ext ( target ) ) ) { command_fail ( si , fault_nosuch_target , _ ( \"\\\\2%s\\\\2<S2SV_blank>is<S2SV_blank>not<S2SV_blank>registered.\" ) , target ) ; return ; } free ( target ) ; target = sstrdup ( mt -> name ) ; ca = chanacs_find_literal ( mc , mt , 0 ) ; } if ( ca != NULL ) { str1 = bitmask_to_flags2 ( ca -> level , 0 ) ; command_success_string ( si , str1 , _ ( \"Flags<S2SV_blank>for<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>in<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>are<S2SV_blank>\\\\2%s\\\\2.\" ) , target , channel , str1 ) ; } else command_success_string ( si , \"\" , _ ( \"No<S2SV_blank>flags<S2SV_blank>for<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>in<S2SV_blank>\\\\2%s\\\\2.\" ) , target , channel ) ; logcommand ( si , CMDLOG_GET , \"FLAGS:<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>on<S2SV_blank>\\\\2%s\\\\2\" , mc -> name , target ) ; return ; } restrictflags = chanacs_source_flags ( mc , si ) ; if ( restrictflags & CA_FOUNDER ) restrictflags = ca_all ; else { if ( ! ( restrictflags & CA_FLAGS ) ) { if ( restrictflags & CA_AKICK || si -> smu == NULL || irccasecmp ( target , entity ( si -> smu ) -> name ) || strcmp ( flagstr , \"-*\" ) ) { command_fail ( si , fault_noprivs , _ ( \"You<S2SV_blank>are<S2SV_blank>not<S2SV_blank>authorized<S2SV_blank>to<S2SV_blank>execute<S2SV_blank>this<S2SV_blank>command.\" ) ) ; return ; } } if ( irccasecmp ( target , entity ( si -> smu ) -> name ) ) restrictflags = allow_flags ( mc , restrictflags ) ; else restrictflags |= allow_flags ( mc , restrictflags ) ; } if ( * flagstr == '+' || * flagstr == '-' || * flagstr == '=' ) { flags_make_bitmasks ( flagstr , & addflags , & removeflags ) ; if ( addflags == 0 && removeflags == 0 ) { command_fail ( si , fault_badparams , _ ( \"No<S2SV_blank>valid<S2SV_blank>flags<S2SV_blank>given,<S2SV_blank>use<S2SV_blank>/%s%s<S2SV_blank>HELP<S2SV_blank>FLAGS<S2SV_blank>for<S2SV_blank>a<S2SV_blank>list\" ) , ircd -> uses_rcommand ? \"\" : \"msg<S2SV_blank>\" , chansvs . me -> disp ) ; return ; } } else { addflags = get_template_flags ( mc , flagstr ) ; if ( addflags == 0 ) { if ( * target == '+' || * target == '-' || * target == '=' ) command_fail ( si , fault_badparams , _ ( \"Usage:<S2SV_blank>FLAGS<S2SV_blank>%s<S2SV_blank>[target]<S2SV_blank>[flags]\" ) , mc -> name ) ; else command_fail ( si , fault_badparams , _ ( \"Invalid<S2SV_blank>template<S2SV_blank>name<S2SV_blank>given,<S2SV_blank>use<S2SV_blank>/%s%s<S2SV_blank>TEMPLATE<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>a<S2SV_blank>list\" ) , ircd -> uses_rcommand ? \"\" : \"msg<S2SV_blank>\" , chansvs . me -> disp , mc -> name ) ; return ; } removeflags = ca_all & ~ addflags ; } if ( ! validhostmask ( target ) ) { if ( ! ( mt = myentity_find_ext ( target ) ) ) { command_fail ( si , fault_nosuch_target , _ ( \"\\\\2%s\\\\2<S2SV_blank>is<S2SV_blank>not<S2SV_blank>registered.\" ) , target ) ; return ; } free ( target ) ; target = sstrdup ( mt -> name ) ; ca = chanacs_open ( mc , mt , NULL , true , entity ( si -> smu ) ) ; if ( ca -> level & CA_FOUNDER && removeflags & CA_FLAGS && ! ( removeflags & CA_FOUNDER ) ) { command_fail ( si , fault_noprivs , _ ( \"You<S2SV_blank>may<S2SV_blank>not<S2SV_blank>remove<S2SV_blank>a<S2SV_blank>founder\\'s<S2SV_blank>+f<S2SV_blank>access.\" ) ) ; return ; } if ( ca -> level & CA_FOUNDER && removeflags & CA_FOUNDER && mychan_num_founders ( mc ) == 1 ) { command_fail ( si , fault_noprivs , _ ( \"You<S2SV_blank>may<S2SV_blank>not<S2SV_blank>remove<S2SV_blank>the<S2SV_blank>last<S2SV_blank>founder.\" ) ) ; return ; } if ( ! ( ca -> level & CA_FOUNDER ) && addflags & CA_FOUNDER ) { if ( mychan_num_founders ( mc ) >= chansvs . maxfounders ) { command_fail ( si , fault_noprivs , _ ( \"Only<S2SV_blank>%d<S2SV_blank>founders<S2SV_blank>allowed<S2SV_blank>per<S2SV_blank>channel.\" ) , chansvs . maxfounders ) ; chanacs_close ( ca ) ; return ; } if ( ! myentity_can_register_channel ( mt ) ) { command_fail ( si , fault_toomany , _ ( \"\\\\2%s\\\\2<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>channels<S2SV_blank>registered.\" ) , mt -> name ) ; chanacs_close ( ca ) ; return ; } if ( ! myentity_allow_foundership ( mt ) ) { command_fail ( si , fault_toomany , _ ( \"\\\\2%s\\\\2<S2SV_blank>cannot<S2SV_blank>take<S2SV_blank>foundership<S2SV_blank>of<S2SV_blank>a<S2SV_blank>channel.\" ) , mt -> name ) ; chanacs_close ( ca ) ; return ; } } if ( addflags & CA_FOUNDER ) addflags |= CA_FLAGS , removeflags &= ~ CA_FLAGS ; if ( isuser ( mt ) && ( MU_NEVEROP & user ( mt ) -> flags && addflags != CA_AKICK && addflags != 0 && ( ca -> level == 0 || ca -> level == CA_AKICK ) ) ) { command_fail ( si , fault_noprivs , _ ( \"\\\\2%s\\\\2<S2SV_blank>does<S2SV_blank>not<S2SV_blank>wish<S2SV_blank>to<S2SV_blank>be<S2SV_blank>added<S2SV_blank>to<S2SV_blank>channel<S2SV_blank>access<S2SV_blank>lists<S2SV_blank>(NEVEROP<S2SV_blank>set).\" ) , mt -> name ) ; chanacs_close ( ca ) ; return ; } if ( ca -> level == 0 && chanacs_is_table_full ( ca ) ) { command_fail ( si , fault_toomany , _ ( \"Channel<S2SV_blank>%s<S2SV_blank>access<S2SV_blank>list<S2SV_blank>is<S2SV_blank>full.\" ) , mc -> name ) ; chanacs_close ( ca ) ; return ; } req . ca = ca ; req . oldlevel = ca -> level ; if ( ! chanacs_modify ( ca , & addflags , & removeflags , restrictflags ) ) { command_fail ( si , fault_noprivs , _ ( \"You<S2SV_blank>are<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>on<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>in<S2SV_blank>\\\\2%s\\\\2.\" ) , bitmask_to_flags2 ( addflags , removeflags ) , mt -> name , mc -> name ) ; chanacs_close ( ca ) ; return ; } req . newlevel = ca -> level ; hook_call_channel_acl_change ( & req ) ; chanacs_close ( ca ) ; } else { if ( addflags & CA_FOUNDER ) { command_fail ( si , fault_badparams , _ ( \"You<S2SV_blank>may<S2SV_blank>not<S2SV_blank>set<S2SV_blank>founder<S2SV_blank>status<S2SV_blank>on<S2SV_blank>a<S2SV_blank>hostmask.\" ) ) ; return ; } ca = chanacs_open ( mc , NULL , target , true , entity ( si -> smu ) ) ; if ( ca -> level == 0 && chanacs_is_table_full ( ca ) ) { command_fail ( si , fault_toomany , _ ( \"Channel<S2SV_blank>%s<S2SV_blank>access<S2SV_blank>list<S2SV_blank>is<S2SV_blank>full.\" ) , mc -> name ) ; chanacs_close ( ca ) ; return ; } req . ca = ca ; req . oldlevel = ca -> level ; if ( ! chanacs_modify ( ca , & addflags , & removeflags , restrictflags ) ) { command_fail ( si , fault_noprivs , _ ( \"You<S2SV_blank>are<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>on<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>in<S2SV_blank>\\\\2%s\\\\2.\" ) , bitmask_to_flags2 ( addflags , removeflags ) , target , mc -> name ) ; chanacs_close ( ca ) ; return ; } req . newlevel = ca -> level ; hook_call_channel_acl_change ( & req ) ; chanacs_close ( ca ) ; } if ( ( addflags | removeflags ) == 0 ) { command_fail ( si , fault_nochange , _ ( \"Channel<S2SV_blank>access<S2SV_blank>to<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>for<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>unchanged.\" ) , channel , target ) ; return ; } flagstr = bitmask_to_flags2 ( addflags , removeflags ) ; command_success_nodata ( si , _ ( \"Flags<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>were<S2SV_blank>set<S2SV_blank>on<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>in<S2SV_blank>\\\\2%s\\\\2.\" ) , flagstr , target , channel ) ; logcommand ( si , CMDLOG_SET , \"FLAGS:<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>\\\\2%s\\\\2\" , mc -> name , target , flagstr ) ; verbose ( mc , \"\\\\2%s\\\\2<S2SV_blank>set<S2SV_blank>flags<S2SV_blank>\\\\2%s\\\\2<S2SV_blank>on<S2SV_blank>\\\\2%s\\\\2\" , get_source_name ( si ) , flagstr , target ) ; } free ( target ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> else if ( anope_flags_compat && <S2SV_ModStart> else if ( anope_flags_compat && <S2SV_ModStart> else if ( anope_flags_compat &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-862(缺少授权)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17807\n\n```\nCWE-862 static struct key * construct_key_and_link ( struct keyring_search_context * ctx , const char * callout_info , size_t callout_len , void * aux , struct key * dest_keyring , unsigned long flags ) { struct key_user * user ; struct key * key ; int ret ; kenter ( \"\" ) ; if ( ctx -> index_key . type == & key_type_keyring ) return ERR_PTR ( - EPERM ) ; <S2SV_StartBug> user = key_user_lookup ( current_fsuid ( ) ) ; <S2SV_EndBug> if ( ! user ) <S2SV_StartBug> return ERR_PTR ( - ENOMEM ) ; <S2SV_EndBug> construct_get_dest_keyring ( & dest_keyring ) ; ret = construct_alloc_key ( ctx , dest_keyring , flags , user , & key ) ; key_user_put ( user ) ; if ( ret == 0 ) { ret = construct_key ( key , callout_info , callout_len , aux , dest_keyring ) ; if ( ret < 0 ) { kdebug ( \"cons<S2SV_blank>failed\" ) ; goto construction_failed ; } } else if ( ret == - EINPROGRESS ) { ret = 0 ; } else { <S2SV_StartBug> goto couldnt_alloc_key ; <S2SV_EndBug> } key_put ( dest_keyring ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>key<S2SV_blank>%d\" , key_serial ( key ) ) ; return key ; construction_failed : key_negate_and_link ( key , key_negative_timeout , NULL , NULL ) ; key_put ( key ) ; <S2SV_StartBug> couldnt_alloc_key : <S2SV_EndBug> <S2SV_StartBug> key_put ( dest_keyring ) ; <S2SV_EndBug> kleave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EPERM ) ; ret = construct_get_dest_keyring ( & dest_keyring ) ; if ( ret ) goto error ; <S2SV_ModStart> ! user ) { ret = - ENOMEM ; goto error_put_dest_keyring ; } <S2SV_ModEnd> ret = construct_alloc_key <S2SV_ModStart> else { goto error_put_dest_keyring <S2SV_ModEnd> ; } key_put <S2SV_ModStart> key ) ; error_put_dest_keyring <S2SV_ModEnd> : key_put ( <S2SV_ModStart> dest_keyring ) ; error :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int http_read_stream ( URLContext * h , uint8_t * buf , int size ) { HTTPContext * s = h -> priv_data ; int err , new_location , read_ret ; int64_t seek_ret ; if ( ! s -> hd ) return AVERROR_EOF ; if ( s -> end_chunked_post && ! s -> end_header ) { err = http_read_header ( h , & new_location ) ; if ( err < 0 ) return err ; } <S2SV_StartBug> if ( s -> chunksize >= 0 ) { <S2SV_EndBug> if ( ! s -> chunksize ) { char line [ 32 ] ; do { if ( ( err = http_get_line ( s , line , sizeof ( line ) ) ) < 0 ) return err ; } while ( ! * line ) ; <S2SV_StartBug> s -> chunksize = strtoll ( line , NULL , 16 ) ; <S2SV_EndBug> <S2SV_StartBug> av_log ( NULL , AV_LOG_TRACE , \"Chunked<S2SV_blank>encoding<S2SV_blank>data<S2SV_blank>size:<S2SV_blank>%\" PRId64 \"\\'\\\\n\" , <S2SV_EndBug> s -> chunksize ) ; if ( ! s -> chunksize ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } size = FFMIN ( size , s -> chunksize ) ; } # if CONFIG_ZLIB if ( s -> compressed ) return http_buf_read_compressed ( h , buf , size ) ; # endif read_ret = http_buf_read ( h , buf , size ) ; if ( ( read_ret < 0 && s -> reconnect && ( ! h -> is_streamed || s -> reconnect_streamed ) && s -> filesize > 0 && s -> off < s -> filesize ) || ( read_ret == 0 && s -> reconnect_at_eof && ( ! h -> is_streamed || s -> reconnect_streamed ) ) ) { <S2SV_StartBug> int64_t target = h -> is_streamed ? 0 : s -> off ; <S2SV_EndBug> if ( s -> reconnect_delay > s -> reconnect_delay_max ) return AVERROR ( EIO ) ; <S2SV_StartBug> av_log ( h , AV_LOG_INFO , \"Will<S2SV_blank>reconnect<S2SV_blank>at<S2SV_blank>%\" PRId64 \"<S2SV_blank>error=%s.\\\\n\" , s -> off , av_err2str ( read_ret ) ) ; <S2SV_EndBug> av_usleep ( 1000U * 1000 * s -> reconnect_delay ) ; s -> reconnect_delay = 1 + 2 * s -> reconnect_delay ; seek_ret = http_seek_internal ( h , target , SEEK_SET , 1 ) ; if ( seek_ret != target ) { <S2SV_StartBug> av_log ( h , AV_LOG_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>reconnect<S2SV_blank>at<S2SV_blank>%\" PRId64 \".\\\\n\" , target ) ; <S2SV_EndBug> return read_ret ; } read_ret = http_buf_read ( h , buf , size ) ; } else s -> reconnect_delay = 0 ; return read_ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s -> chunksize != UINT64_MAX <S2SV_ModEnd> ) { if <S2SV_ModStart> -> chunksize = strtoull <S2SV_ModEnd> ( line , <S2SV_ModStart> ; av_log ( h <S2SV_ModEnd> , AV_LOG_TRACE , <S2SV_ModStart> AV_LOG_TRACE , \"Chunked<S2SV_blank>encoding<S2SV_blank>data<S2SV_blank>size:<S2SV_blank>%\" PRIu64 <S2SV_ModEnd> \"\\'\\\\n\" , s <S2SV_ModStart> return 0 ; else if ( s -> chunksize == UINT64_MAX ) { av_log ( h , AV_LOG_ERROR , \"Invalid<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>%\" PRIu64 \"\\\\n\" , s -> chunksize ) ; return AVERROR ( EINVAL ) ; } <S2SV_ModStart> ) ) { uint64_t <S2SV_ModEnd> target = h <S2SV_ModStart> AV_LOG_INFO , \"Will<S2SV_blank>reconnect<S2SV_blank>at<S2SV_blank>%\" PRIu64 <S2SV_ModEnd> \"<S2SV_blank>error=%s.\\\\n\" , s <S2SV_ModStart> AV_LOG_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>reconnect<S2SV_blank>at<S2SV_blank>%\" PRIu64 <S2SV_ModEnd> \".\\\\n\" , target\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4170\n\n```\nCWE-362 static inline int ldsem_cmpxchg ( long * old , long new , struct ld_semaphore * sem ) { <S2SV_StartBug> long tmp = * old ; <S2SV_EndBug> * old = atomic_long_cmpxchg ( & sem -> count , * old , new ) ; <S2SV_StartBug> return * old == tmp ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long tmp = <S2SV_ModEnd> atomic_long_cmpxchg ( & <S2SV_ModStart> new ) ; if ( tmp == * old ) { * old = new ; return 1 ; } else { * old = tmp ; return 0 ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void write_sync_code ( struct vp9_write_bit_buffer * wb ) { <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_literal ( wb , VP9_SYNC_CODE_0 , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_literal ( wb , VP9_SYNC_CODE_1 , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_literal ( wb , VP9_SYNC_CODE_2 , 8 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> write_sync_code ( struct vpx_write_bit_buffer <S2SV_ModEnd> * wb ) <S2SV_ModStart> wb ) { vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> 8 ) ; vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> 8 ) ; vpx_wb_write_literal <S2SV_ModEnd> ( wb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 <S2SV_StartBug> static void evtchn_fifo_handle_events ( unsigned cpu ) <S2SV_EndBug> { <S2SV_StartBug> __evtchn_fifo_handle_events ( cpu , false ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( unsigned cpu , struct evtchn_loop_ctrl * ctrl <S2SV_ModStart> ( cpu , ctrl <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static void nsc_encode_sse2 ( NSC_CONTEXT * context , const BYTE * data , <S2SV_EndBug> UINT32 scanline ) { nsc_encode_argb_to_aycocg_sse2 ( context , data , scanline ) ; if ( context -> ChromaSubsamplingLevel > 0 ) { nsc_encode_subsampling_sse2 ( context ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> nsc_encode_sse2 ( NSC_CONTEXT <S2SV_ModStart> ) ; } return TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8957\n\n```\nCWE-119 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , length ; ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } switch ( sun_info . maptype ) <S2SV_StartBug> { <S2SV_EndBug> case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( sun_info . depth >= 8 ) && ( ( number_pixels * ( ( sun_info . depth + 7 ) / 8 ) ) > sun_info . length ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( sun_info . length , bytes_per_line * sun_info . width ) , sizeof ( * sun_data ) ) ; if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; sun_pixels = sun_data ; bytes_per_line = 0 ; if ( sun_info . type == RT_ENCODED ) { size_t height ; height = sun_info . height ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * height ) ; sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; } p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { if ( bytes_per_line == 0 ) bytes_per_line = image -> columns ; length = image -> rows * ( image -> columns + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> maptype ) { case RMT_NONE : break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int check_cond_jmp_op ( struct bpf_verifier_env * env , struct bpf_insn * insn , int * insn_idx ) { struct bpf_verifier_state * this_branch = env -> cur_state ; struct bpf_verifier_state * other_branch ; struct bpf_reg_state * regs = this_branch -> frame [ this_branch -> curframe ] -> regs ; struct bpf_reg_state * dst_reg , * other_branch_regs ; u8 opcode = BPF_OP ( insn -> code ) ; int err ; if ( opcode > BPF_JSLE ) { verbose ( env , \"invalid<S2SV_blank>BPF_JMP<S2SV_blank>opcode<S2SV_blank>%x\\\\n\" , opcode ) ; return - EINVAL ; } if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 ) { verbose ( env , \"BPF_JMP<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , insn -> src_reg ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>comparison<S2SV_blank>prohibited\\\\n\" , insn -> src_reg ) ; return - EACCES ; } } else { if ( insn -> src_reg != BPF_REG_0 ) { verbose ( env , \"BPF_JMP<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; dst_reg = & regs [ insn -> dst_reg ] ; if ( BPF_SRC ( insn -> code ) == BPF_K ) { int pred = is_branch_taken ( dst_reg , insn -> imm , opcode ) ; if ( pred == 1 ) { * insn_idx += insn -> off ; return 0 ; } else if ( pred == 0 ) { return 0 ; } } <S2SV_StartBug> other_branch = push_stack ( env , * insn_idx + insn -> off + 1 , * insn_idx ) ; <S2SV_EndBug> if ( ! other_branch ) return - EFAULT ; other_branch_regs = other_branch -> frame [ other_branch -> curframe ] -> regs ; if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( dst_reg -> type == SCALAR_VALUE && regs [ insn -> src_reg ] . type == SCALAR_VALUE ) { if ( tnum_is_const ( regs [ insn -> src_reg ] . var_off ) ) reg_set_min_max ( & other_branch_regs [ insn -> dst_reg ] , dst_reg , regs [ insn -> src_reg ] . var_off . value , opcode ) ; else if ( tnum_is_const ( dst_reg -> var_off ) ) reg_set_min_max_inv ( & other_branch_regs [ insn -> src_reg ] , & regs [ insn -> src_reg ] , dst_reg -> var_off . value , opcode ) ; else if ( opcode == BPF_JEQ || opcode == BPF_JNE ) reg_combine_min_max ( & other_branch_regs [ insn -> src_reg ] , & other_branch_regs [ insn -> dst_reg ] , & regs [ insn -> src_reg ] , & regs [ insn -> dst_reg ] , opcode ) ; } } else if ( dst_reg -> type == SCALAR_VALUE ) { reg_set_min_max ( & other_branch_regs [ insn -> dst_reg ] , dst_reg , insn -> imm , opcode ) ; } if ( BPF_SRC ( insn -> code ) == BPF_K && insn -> imm == 0 && ( opcode == BPF_JEQ || opcode == BPF_JNE ) && reg_type_may_be_null ( dst_reg -> type ) ) { mark_ptr_or_null_regs ( this_branch , insn -> dst_reg , opcode == BPF_JNE ) ; mark_ptr_or_null_regs ( other_branch , insn -> dst_reg , opcode == BPF_JEQ ) ; } else if ( ! try_match_pkt_pointers ( insn , dst_reg , & regs [ insn -> src_reg ] , this_branch , other_branch ) && is_pointer_value ( env , insn -> dst_reg ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>comparison<S2SV_blank>prohibited\\\\n\" , insn -> dst_reg ) ; return - EACCES ; } if ( env -> log . level ) print_verifier_state ( env , this_branch -> frame [ this_branch -> curframe ] ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * insn_idx , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int stats_open_file ( stats_io_t * stats , const char * fpf , int pass ) { int res ; stats -> pass = pass ; if ( pass == 0 ) { stats -> file = fopen ( fpf , \"wb\" ) ; stats -> buf . sz = 0 ; stats -> buf . buf = NULL ; res = ( stats -> file != NULL ) ; } else { # if USE_POSIX_MMAP struct stat stat_buf ; int fd ; fd = open ( fpf , O_RDONLY ) ; stats -> file = fdopen ( fd , \"rb\" ) ; fstat ( fd , & stat_buf ) ; stats -> buf . sz = stat_buf . st_size ; stats -> buf . buf = mmap ( NULL , stats -> buf . sz , PROT_READ , MAP_PRIVATE , fd , 0 ) ; res = ( stats -> buf . buf != NULL ) ; # else size_t nbytes ; stats -> file = fopen ( fpf , \"rb\" ) ; <S2SV_StartBug> if ( fseek ( stats -> file , 0 , SEEK_END ) ) <S2SV_EndBug> fatal ( \"First-pass<S2SV_blank>stats<S2SV_blank>file<S2SV_blank>must<S2SV_blank>be<S2SV_blank>seekable!\" ) ; stats -> buf . sz = stats -> buf_alloc_sz = ftell ( stats -> file ) ; rewind ( stats -> file ) ; stats -> buf . buf = malloc ( stats -> buf_alloc_sz ) ; if ( ! stats -> buf . buf ) fatal ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>first-pass<S2SV_blank>stats<S2SV_blank>buffer<S2SV_blank>(%lu<S2SV_blank>bytes)\" , ( unsigned int ) stats -> buf_alloc_sz ) ; nbytes = fread ( stats -> buf . buf , 1 , stats -> buf . sz , stats -> file ) ; res = ( nbytes == stats -> buf . sz ) ; # endif } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( stats -> file == NULL ) fatal ( \"First-pass<S2SV_blank>stats<S2SV_blank>file<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist!\" ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8970\n\n```\nCWE-295 static int int_x509_param_set_hosts ( X509_VERIFY_PARAM_ID * id , int mode , const char * name , size_t namelen ) { char * copy ; <S2SV_StartBug> if ( name && memchr ( name , '\\\\0' , namelen ) ) <S2SV_EndBug> return 0 ; if ( mode == SET_HOST && id -> hosts ) { string_stack_free ( id -> hosts ) ; id -> hosts = NULL ; } if ( name == NULL || namelen == 0 ) return 1 ; copy = strndup ( name , namelen ) ; if ( copy == NULL ) return 0 ; if ( id -> hosts == NULL && ( id -> hosts = sk_OPENSSL_STRING_new_null ( ) ) == NULL ) { free ( copy ) ; return 0 ; } if ( ! sk_OPENSSL_STRING_push ( id -> hosts , copy ) ) { free ( copy ) ; if ( sk_OPENSSL_STRING_num ( id -> hosts ) == 0 ) { sk_OPENSSL_STRING_free ( id -> hosts ) ; id -> hosts = NULL ; } return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( name != NULL && namelen == 0 ) namelen = strlen ( name ) ; if ( name\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 <S2SV_StartBug> static int mem_resize ( jas_stream_memobj_t * m , int bufsize ) <S2SV_EndBug> { unsigned char * buf ; <S2SV_StartBug> assert ( bufsize >= 0 ) ; <S2SV_EndBug> <S2SV_StartBug> JAS_DBGLOG ( 100 , ( \"mem_resize(%p,<S2SV_blank>%d)\\\\n\" , m , bufsize ) ) ; <S2SV_EndBug> if ( ! ( buf = jas_realloc2 ( m -> buf_ , bufsize , sizeof ( unsigned char ) ) ) && bufsize ) { JAS_DBGLOG ( 100 , ( \"mem_resize<S2SV_blank>realloc<S2SV_blank>failed\\\\n\" ) ) ; return - 1 ; } JAS_DBGLOG ( 100 , ( \"mem_resize<S2SV_blank>realloc<S2SV_blank>succeeded\\\\n\" ) ) ; m -> buf_ = buf ; m -> bufsize_ = bufsize ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * m , size_t <S2SV_ModEnd> bufsize ) { <S2SV_ModStart> * buf ; <S2SV_ModEnd> JAS_DBGLOG ( 100 <S2SV_ModStart> 100 , ( \"mem_resize(%p,<S2SV_blank>%zu)\\\\n\" <S2SV_ModEnd> , m , <S2SV_ModStart> ) ) ; if ( ! bufsize ) { jas_eprintf ( \"mem_resize<S2SV_blank>was<S2SV_blank>not<S2SV_blank>really<S2SV_blank>designed<S2SV_blank>to<S2SV_blank>handle<S2SV_blank>a<S2SV_blank>buffer<S2SV_blank>of<S2SV_blank>size<S2SV_blank>0\\\\n\" \"This<S2SV_blank>may<S2SV_blank>not<S2SV_blank>work.\\\\n\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 static int jp2_cmap_getdata ( jp2_box_t * box , jas_stream_t * in ) { jp2_cmap_t * cmap = & box -> data . cmap ; jp2_cmapent_t * ent ; <S2SV_StartBug> unsigned int i ; <S2SV_EndBug> cmap -> numchans = ( box -> datalen ) / 4 ; if ( ! ( cmap -> ents = jas_alloc2 ( cmap -> numchans , sizeof ( jp2_cmapent_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < cmap -> numchans ; ++ i ) { ent = & cmap -> ents [ i ] ; if ( jp2_getuint16 ( in , & ent -> cmptno ) || jp2_getuint8 ( in , & ent -> map ) || jp2_getuint8 ( in , & ent -> pcol ) ) { return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int i ; cmap -> ents = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9226\n\n```\nCWE-787 static int next_state_val ( CClassNode * cc , OnigCodePoint * vs , OnigCodePoint v , int * vs_israw , int v_israw , enum CCVALTYPE intype , enum CCVALTYPE * type , enum CCSTATE * state , ScanEnv * env ) { int r ; switch ( * state ) { case CCS_VALUE : if ( * type == CCV_SB ) { <S2SV_StartBug> BITSET_SET_BIT ( cc -> bs , ( int ) ( * vs ) ) ; <S2SV_EndBug> } else if ( * type == CCV_CODE_POINT ) { r = add_code_range ( & ( cc -> mbuf ) , env , * vs , * vs ) ; if ( r < 0 ) return r ; } break ; case CCS_RANGE : if ( intype == * type ) { if ( intype == CCV_SB ) { if ( * vs > 0xff || v > 0xff ) return ONIGERR_INVALID_CODE_POINT_VALUE ; if ( * vs > v ) { if ( IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC ) ) goto ccs_range_end ; else return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS ; } bitset_set_range ( cc -> bs , ( int ) * vs , ( int ) v ) ; } else { r = add_code_range ( & ( cc -> mbuf ) , env , * vs , v ) ; if ( r < 0 ) return r ; } } else { # if 0 if ( intype == CCV_CODE_POINT && * type == CCV_SB ) { # endif if ( * vs > v ) { if ( IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC ) ) goto ccs_range_end ; else return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS ; } bitset_set_range ( cc -> bs , ( int ) * vs , ( int ) ( v < 0xff ? v : 0xff ) ) ; r = add_code_range ( & ( cc -> mbuf ) , env , ( OnigCodePoint ) * vs , v ) ; if ( r < 0 ) return r ; # if 0 } else return ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE ; # endif } ccs_range_end : * state = CCS_COMPLETE ; break ; case CCS_COMPLETE : case CCS_START : * state = CCS_VALUE ; break ; default : break ; } * vs_israw = v_israw ; * vs = v ; * type = intype ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CCV_SB ) { if ( * vs > 0xff ) return ONIGERR_INVALID_CODE_POINT_VALUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4557\n\n```\nCWE-000 static int replace_map_fd_with_map_ptr ( struct verifier_env * env ) { struct bpf_insn * insn = env -> prog -> insnsi ; int insn_cnt = env -> prog -> len ; int i , j ; for ( i = 0 ; i < insn_cnt ; i ++ , insn ++ ) { if ( BPF_CLASS ( insn -> code ) == BPF_LDX && ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> imm != 0 ) ) { verbose ( \"BPF_LDX<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( BPF_CLASS ( insn -> code ) == BPF_STX && ( ( BPF_MODE ( insn -> code ) != BPF_MEM && BPF_MODE ( insn -> code ) != BPF_XADD ) || insn -> imm != 0 ) ) { verbose ( \"BPF_STX<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( insn [ 0 ] . code == ( BPF_LD | BPF_IMM | BPF_DW ) ) { struct bpf_map * map ; struct fd f ; if ( i == insn_cnt - 1 || insn [ 1 ] . code != 0 || insn [ 1 ] . dst_reg != 0 || insn [ 1 ] . src_reg != 0 || insn [ 1 ] . off != 0 ) { verbose ( \"invalid<S2SV_blank>bpf_ld_imm64<S2SV_blank>insn\\\\n\" ) ; return - EINVAL ; } if ( insn -> src_reg == 0 ) goto next_insn ; if ( insn -> src_reg != BPF_PSEUDO_MAP_FD ) { verbose ( \"unrecognized<S2SV_blank>bpf_ld_imm64<S2SV_blank>insn\\\\n\" ) ; return - EINVAL ; } f = fdget ( insn -> imm ) ; map = __bpf_map_get ( f ) ; if ( IS_ERR ( map ) ) { verbose ( \"fd<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>not<S2SV_blank>pointing<S2SV_blank>to<S2SV_blank>valid<S2SV_blank>bpf_map\\\\n\" , insn -> imm ) ; <S2SV_StartBug> fdput ( f ) ; <S2SV_EndBug> return PTR_ERR ( map ) ; } insn [ 0 ] . imm = ( u32 ) ( unsigned long ) map ; insn [ 1 ] . imm = ( ( u64 ) ( unsigned long ) map ) >> 32 ; for ( j = 0 ; j < env -> used_map_cnt ; j ++ ) if ( env -> used_maps [ j ] == map ) { fdput ( f ) ; goto next_insn ; } if ( env -> used_map_cnt >= MAX_USED_MAPS ) { fdput ( f ) ; return - E2BIG ; } env -> used_maps [ env -> used_map_cnt ++ ] = map ; bpf_map_inc ( map , false ) ; fdput ( f ) ; next_insn : insn ++ ; i ++ ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> imm ) ; <S2SV_ModEnd> return PTR_ERR (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6415\n\n```\nCWE-476 static void dex_parse_debug_item ( RBinFile * binfile , RBinDexObj * bin , RBinDexClass * c , int MI , int MA , int paddr , int ins_size , int insns_size , char * class_name , int regsz , int debug_info_off ) { struct r_bin_t * rbin = binfile -> rbin ; const ut8 * p4 = r_buf_get_at ( binfile -> buf , debug_info_off , NULL ) ; const ut8 * p4_end = p4 + binfile -> buf -> length - debug_info_off ; ut64 line_start ; ut64 parameters_size ; ut64 param_type_idx ; ut16 argReg = regsz - ins_size ; ut64 source_file_idx = c -> source_file ; RList * params , * debug_positions , * emitted_debug_locals = NULL ; bool keep = true ; if ( argReg > regsz ) { return ; } p4 = r_uleb128 ( p4 , p4_end - p4 , & line_start ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & parameters_size ) ; ut32 address = 0 ; ut32 line = line_start ; if ( ! ( debug_positions = r_list_newf ( ( RListFree ) free ) ) ) { return ; } if ( ! ( emitted_debug_locals = r_list_newf ( ( RListFree ) free ) ) ) { r_list_free ( debug_positions ) ; return ; } struct dex_debug_local_t debug_locals [ regsz ] ; memset ( debug_locals , 0 , sizeof ( struct dex_debug_local_t ) * regsz ) ; if ( ! ( MA & 0x0008 ) ) { debug_locals [ argReg ] . name = \"this\" ; debug_locals [ argReg ] . descriptor = r_str_newf ( \"%s;\" , class_name ) ; debug_locals [ argReg ] . startAddress = 0 ; debug_locals [ argReg ] . signature = NULL ; debug_locals [ argReg ] . live = true ; argReg ++ ; } if ( ! ( params = dex_method_signature2 ( bin , MI ) ) ) { r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; return ; } RListIter * iter = r_list_iterator ( params ) ; char * name ; char * type ; int reg ; r_list_foreach ( params , iter , type ) { if ( ( argReg >= regsz ) || ! type || parameters_size <= 0 ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; r_list_free ( emitted_debug_locals ) ; return ; } p4 = r_uleb128 ( p4 , p4_end - p4 , & param_type_idx ) ; param_type_idx -= 1 ; name = getstr ( bin , param_type_idx ) ; reg = argReg ; switch ( type [ 0 ] ) { case 'D' : case 'J' : argReg += 2 ; break ; default : argReg += 1 ; break ; } if ( name ) { debug_locals [ reg ] . name = name ; debug_locals [ reg ] . descriptor = type ; debug_locals [ reg ] . signature = NULL ; debug_locals [ reg ] . startAddress = address ; debug_locals [ reg ] . live = true ; } -- parameters_size ; } <S2SV_StartBug> ut8 opcode = * ( p4 ++ ) & 0xff ; <S2SV_EndBug> while ( keep ) { switch ( opcode ) { case 0x0 : keep = false ; break ; case 0x1 : { ut64 addr_diff ; p4 = r_uleb128 ( p4 , p4_end - p4 , & addr_diff ) ; address += addr_diff ; } break ; case 0x2 : { st64 line_diff = r_sleb128 ( & p4 , p4_end ) ; line += line_diff ; } break ; case 0x3 : { ut64 register_num ; ut64 name_idx ; ut64 type_idx ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & name_idx ) ; name_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & type_idx ) ; type_idx -= 1 ; if ( register_num >= regsz ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; return ; } if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . name = getstr ( bin , name_idx ) ; debug_locals [ register_num ] . descriptor = dex_type_descriptor ( bin , type_idx ) ; debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . signature = NULL ; debug_locals [ register_num ] . live = true ; } break ; case 0x4 : { ut64 register_num ; ut64 name_idx ; ut64 type_idx ; ut64 sig_idx ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & name_idx ) ; name_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & type_idx ) ; type_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & sig_idx ) ; sig_idx -= 1 ; if ( register_num >= regsz ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; return ; } if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . name = getstr ( bin , name_idx ) ; debug_locals [ register_num ] . descriptor = dex_type_descriptor ( bin , type_idx ) ; debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . signature = getstr ( bin , sig_idx ) ; debug_locals [ register_num ] . live = true ; } break ; case 0x5 : { ut64 register_num ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . live = false ; } break ; case 0x6 : { ut64 register_num ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; if ( ! debug_locals [ register_num ] . live ) { debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . live = true ; } } break ; case 0x7 : break ; case 0x8 : break ; case 0x9 : { p4 = r_uleb128 ( p4 , p4_end - p4 , & source_file_idx ) ; source_file_idx -- ; } break ; default : { int adjusted_opcode = opcode - 0x0a ; address += ( adjusted_opcode / 15 ) ; line += - 4 + ( adjusted_opcode % 15 ) ; struct dex_debug_position_t * position = malloc ( sizeof ( struct dex_debug_position_t ) ) ; if ( ! position ) { keep = false ; break ; } position -> source_file_idx = source_file_idx ; position -> address = address ; position -> line = line ; r_list_append ( debug_positions , position ) ; } break ; } opcode = * ( p4 ++ ) & 0xff ; } if ( ! binfile -> sdb_addrinfo ) { binfile -> sdb_addrinfo = sdb_new0 ( ) ; } char * fileline ; char offset [ 64 ] ; char * offset_ptr ; RListIter * iter1 ; struct dex_debug_position_t * pos ; r_list_foreach ( debug_positions , iter1 , pos ) { fileline = r_str_newf ( \"%s|%\" PFMT64d , getstr ( bin , pos -> source_file_idx ) , pos -> line ) ; offset_ptr = sdb_itoa ( pos -> address + paddr , offset , 16 ) ; sdb_set ( binfile -> sdb_addrinfo , offset_ptr , fileline , 0 ) ; sdb_set ( binfile -> sdb_addrinfo , fileline , offset_ptr , 0 ) ; } if ( ! dexdump ) { r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; r_list_free ( params ) ; return ; } RListIter * iter2 ; struct dex_debug_position_t * position ; rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>positions<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:\\\\n\" ) ; r_list_foreach ( debug_positions , iter2 , position ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04llx<S2SV_blank>line=%llu\\\\n\" , position -> address , position -> line ) ; } rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>locals<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:\\\\n\" ) ; RListIter * iter3 ; struct dex_debug_local_t * local ; r_list_foreach ( emitted_debug_locals , iter3 , local ) { if ( local -> signature ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , local -> startAddress , local -> endAddress , local -> reg , local -> name , local -> descriptor , local -> signature ) ; } else { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , local -> startAddress , local -> endAddress , local -> reg , local -> name , local -> descriptor ) ; } } for ( reg = 0 ; reg < regsz ; reg ++ ) { if ( debug_locals [ reg ] . live ) { if ( debug_locals [ reg ] . signature ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>\" \"%s\\\\n\" , debug_locals [ reg ] . startAddress , insns_size , reg , debug_locals [ reg ] . name , debug_locals [ reg ] . descriptor , debug_locals [ reg ] . signature ) ; } else { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s\" \"\\\\n\" , debug_locals [ reg ] . startAddress , insns_size , reg , debug_locals [ reg ] . name , debug_locals [ reg ] . descriptor ) ; } } } r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; r_list_free ( params ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> parameters_size ; } if ( p4 <= 0 ) { return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4809\n\n```\nCWE-20 static int archive_read_format_cpio_read_header ( struct archive_read * a , struct archive_entry * entry ) { struct cpio * cpio ; const void * h ; struct archive_string_conv * sconv ; size_t namelength ; size_t name_pad ; int r ; cpio = ( struct cpio * ) ( a -> format -> data ) ; sconv = cpio -> opt_sconv ; if ( sconv == NULL ) { if ( ! cpio -> init_default_conversion ) { cpio -> sconv_default = archive_string_default_conversion_for_read ( & ( a -> archive ) ) ; cpio -> init_default_conversion = 1 ; } sconv = cpio -> sconv_default ; } r = ( cpio -> read_header ( a , cpio , entry , & namelength , & name_pad ) ) ; if ( r < ARCHIVE_WARN ) return ( r ) ; h = __archive_read_ahead ( a , namelength + name_pad , NULL ) ; if ( h == NULL ) return ( ARCHIVE_FATAL ) ; if ( archive_entry_copy_pathname_l ( entry , ( const char * ) h , namelength , sconv ) != 0 ) { if ( errno == ENOMEM ) { archive_set_error ( & a -> archive , ENOMEM , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Pathname\" ) ; return ( ARCHIVE_FATAL ) ; } archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Pathname<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>converted<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>current<S2SV_blank>locale.\" , archive_string_conversion_charset_name ( sconv ) ) ; r = ARCHIVE_WARN ; } cpio -> entry_offset = 0 ; __archive_read_consume ( a , namelength + name_pad ) ; if ( archive_entry_filetype ( entry ) == AE_IFLNK ) { <S2SV_StartBug> h = __archive_read_ahead ( a , <S2SV_EndBug> ( size_t ) cpio -> entry_bytes_remaining , NULL ) ; if ( h == NULL ) return ( ARCHIVE_FATAL ) ; if ( archive_entry_copy_symlink_l ( entry , ( const char * ) h , ( size_t ) cpio -> entry_bytes_remaining , sconv ) != 0 ) { if ( errno == ENOMEM ) { archive_set_error ( & a -> archive , ENOMEM , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Linkname\" ) ; return ( ARCHIVE_FATAL ) ; } archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Linkname<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>converted<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>\" \"current<S2SV_blank>locale.\" , archive_string_conversion_charset_name ( sconv ) ) ; r = ARCHIVE_WARN ; } __archive_read_consume ( a , cpio -> entry_bytes_remaining ) ; cpio -> entry_bytes_remaining = 0 ; } if ( namelength == 11 && strcmp ( ( const char * ) h , \"TRAILER!!!\" ) == 0 ) { archive_clear_error ( & a -> archive ) ; return ( ARCHIVE_EOF ) ; } if ( record_hardlink ( a , cpio , entry ) != ARCHIVE_OK ) { return ( ARCHIVE_FATAL ) ; } return ( r ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> AE_IFLNK ) { if ( cpio -> entry_bytes_remaining > 1024 * 1024 ) { archive_set_error ( & a -> archive , ENOMEM , \"Rejecting<S2SV_blank>malformed<S2SV_blank>cpio<S2SV_blank>archive:<S2SV_blank>symlink<S2SV_blank>contents<S2SV_blank>exceed<S2SV_blank>1<S2SV_blank>megabyte\" ) ; return ( ARCHIVE_FATAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2647\n\n```\nCWE-476 struct key * key_get_instantiation_authkey ( key_serial_t target_id ) { char description [ 16 ] ; struct keyring_search_context ctx = { . index_key . type = & key_type_request_key_auth , . index_key . description = description , . cred = current_cred ( ) , <S2SV_StartBug> . match_data . cmp = user_match , <S2SV_EndBug> . match_data . raw_data = description , . match_data . lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT , } ; struct key * authkey ; key_ref_t authkey_ref ; sprintf ( description , \"%x\" , target_id ) ; authkey_ref = search_process_keyrings ( & ctx ) ; if ( IS_ERR ( authkey_ref ) ) { authkey = ERR_CAST ( authkey_ref ) ; if ( authkey == ERR_PTR ( - EAGAIN ) ) authkey = ERR_PTR ( - ENOKEY ) ; goto error ; } authkey = key_ref_to_ptr ( authkey_ref ) ; if ( test_bit ( KEY_FLAG_REVOKED , & authkey -> flags ) ) { key_put ( authkey ) ; authkey = ERR_PTR ( - EKEYREVOKED ) ; } error : return authkey ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . cmp = key_default_cmp <S2SV_ModEnd> , . match_data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t rawSocketProcessIpPacket ( NetInterface * interface , IpPseudoHeader * pseudoHeader , const NetBuffer * buffer , size_t offset , NetRxAncillary * ancillary ) { uint_t i ; size_t length ; Socket * socket ; SocketQueueItem * queueItem ; NetBuffer * p ; length = netBufferGetLength ( buffer ) - offset ; for ( i = 0 ; i < SOCKET_MAX_COUNT ; i ++ ) { socket = socketTable + i ; if ( socket -> type != SOCKET_TYPE_RAW_IP ) continue ; if ( socket -> interface && socket -> interface != interface ) continue ; # if ( IPV4_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv4PseudoHeader ) ) { if ( socket -> protocol != pseudoHeader -> ipv4Data . protocol ) continue ; if ( socket -> localIpAddr . length != 0 ) { if ( socket -> localIpAddr . length != sizeof ( Ipv4Addr ) ) continue ; if ( socket -> localIpAddr . ipv4Addr != pseudoHeader -> ipv4Data . destAddr ) continue ; } if ( socket -> remoteIpAddr . length != 0 ) { if ( socket -> remoteIpAddr . length != sizeof ( Ipv4Addr ) ) continue ; if ( socket -> remoteIpAddr . ipv4Addr != pseudoHeader -> ipv4Data . srcAddr ) continue ; } } else # endif # if ( IPV6_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv6PseudoHeader ) ) { if ( socket -> protocol != pseudoHeader -> ipv6Data . nextHeader ) continue ; if ( socket -> localIpAddr . length != 0 ) { if ( socket -> localIpAddr . length != sizeof ( Ipv6Addr ) ) continue ; if ( ! ipv6CompAddr ( & socket -> localIpAddr . ipv6Addr , & pseudoHeader -> ipv6Data . destAddr ) ) continue ; } if ( socket -> remoteIpAddr . length != 0 ) { if ( socket -> remoteIpAddr . length != sizeof ( Ipv6Addr ) ) continue ; if ( ! ipv6CompAddr ( & socket -> remoteIpAddr . ipv6Addr , & pseudoHeader -> ipv6Data . srcAddr ) ) continue ; } } else # endif { continue ; } break ; } if ( i >= SOCKET_MAX_COUNT ) return ERROR_PROTOCOL_UNREACHABLE ; if ( socket -> receiveQueue == NULL ) { p = netBufferAlloc ( sizeof ( SocketQueueItem ) + length ) ; if ( p != NULL ) { queueItem = netBufferAt ( p , 0 ) ; queueItem -> buffer = p ; socket -> receiveQueue = queueItem ; } else { queueItem = NULL ; } } else { queueItem = socket -> receiveQueue ; for ( i = 1 ; queueItem -> next ; i ++ ) { queueItem = queueItem -> next ; } if ( i >= RAW_SOCKET_RX_QUEUE_SIZE ) { MIB2_INC_COUNTER32 ( ifGroup . ifTable [ interface -> index ] . ifInDiscards , 1 ) ; IF_MIB_INC_COUNTER32 ( ifTable [ interface -> index ] . ifInDiscards , 1 ) ; return ERROR_RECEIVE_QUEUE_FULL ; } p = netBufferAlloc ( sizeof ( SocketQueueItem ) + length ) ; if ( p != NULL ) { queueItem -> next = netBufferAt ( p , 0 ) ; queueItem = queueItem -> next ; queueItem -> buffer = p ; } else { queueItem = NULL ; } } if ( queueItem == NULL ) { MIB2_INC_COUNTER32 ( ifGroup . ifTable [ interface -> index ] . ifInDiscards , 1 ) ; IF_MIB_INC_COUNTER32 ( ifTable [ interface -> index ] . ifInDiscards , 1 ) ; return ERROR_OUT_OF_MEMORY ; } queueItem -> next = NULL ; <S2SV_StartBug> queueItem -> srcPort = 0 ; <S2SV_EndBug> # if ( IPV4_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv4PseudoHeader ) ) { queueItem -> srcIpAddr . length = sizeof ( Ipv4Addr ) ; queueItem -> srcIpAddr . ipv4Addr = pseudoHeader -> ipv4Data . srcAddr ; queueItem -> destIpAddr . length = sizeof ( Ipv4Addr ) ; queueItem -> destIpAddr . ipv4Addr = pseudoHeader -> ipv4Data . destAddr ; } # endif # if ( IPV6_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv6PseudoHeader ) ) { queueItem -> srcIpAddr . length = sizeof ( Ipv6Addr ) ; queueItem -> srcIpAddr . ipv6Addr = pseudoHeader -> ipv6Data . srcAddr ; queueItem -> destIpAddr . length = sizeof ( Ipv6Addr ) ; queueItem -> destIpAddr . ipv6Addr = pseudoHeader -> ipv6Data . destAddr ; } # endif queueItem -> offset = sizeof ( SocketQueueItem ) ; netBufferCopy ( queueItem -> buffer , queueItem -> offset , buffer , offset , length ) ; queueItem -> ancillary = * ancillary ; rawSocketUpdateEvents ( socket ) ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; queueItem -> interface = interface ; queueItem ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12321\n\n```\nCWE-125 static int java_switch_op ( RAnal * anal , RAnalOp * op , ut64 addr , const ut8 * data , int len ) { ut8 op_byte = data [ 0 ] ; ut64 offset = addr - java_get_method_start ( ) ; ut8 pos = ( offset + 1 ) % 4 ? 1 + 4 - ( offset + 1 ) % 4 : 1 ; if ( op_byte == 0xaa ) { <S2SV_StartBug> if ( pos + 8 > len ) { <S2SV_EndBug> return op -> size ; } <S2SV_StartBug> int min_val = ( ut32 ) ( UINT ( data , pos + 4 ) ) , <S2SV_EndBug> max_val = ( ut32 ) ( UINT ( data , pos + 8 ) ) ; ut32 default_loc = ( ut32 ) ( UINT ( data , pos ) ) , cur_case = 0 ; op -> switch_op = r_anal_switch_op_new ( addr , min_val , default_loc ) ; RAnalCaseOp * caseop = NULL ; pos += 12 ; if ( max_val > min_val && ( ( max_val - min_val ) < ( UT16_MAX / 4 ) ) ) { for ( cur_case = 0 ; cur_case <= max_val - min_val ; pos += 4 , cur_case ++ ) { if ( pos + 4 >= len ) { break ; } int offset = ( int ) ( ut32 ) ( R_BIN_JAVA_UINT ( data , pos ) ) ; caseop = r_anal_switch_op_add_case ( op -> switch_op , addr + pos , cur_case + min_val , addr + offset ) ; if ( caseop ) { caseop -> bb_ref_to = addr + offset ; caseop -> bb_ref_from = addr ; } } } else { eprintf ( \"Invalid<S2SV_blank>switch<S2SV_blank>boundaries<S2SV_blank>at<S2SV_blank>0x%\" PFMT64x \"\\\\n\" , addr ) ; } } op -> size = pos ; return op -> size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pos + 8 + 8 <S2SV_ModStart> size ; } const <S2SV_ModStart> 4 ) ) ; const int <S2SV_ModEnd> max_val = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20182\n\n```\nCWE-119 RD_BOOL <S2SV_StartBug> ber_parse_header ( STREAM s , int tagval , int * length ) <S2SV_EndBug> { int tag , len ; if ( tagval > 0xff ) { in_uint16_be ( s , tag ) ; } else { in_uint8 ( s , tag ) ; } if ( tag != tagval ) { logger ( Core , Error , \"ber_parse_header(),<S2SV_blank>expected<S2SV_blank>tag<S2SV_blank>%d,<S2SV_blank>got<S2SV_blank>%d\" , tagval , tag ) ; return False ; } in_uint8 ( s , len ) ; if ( len & 0x80 ) { len &= ~ 0x80 ; * length = 0 ; while ( len -- ) next_be ( s , * length ) ; } else * length = len ; return s_check ( s ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int tagval , uint32 <S2SV_ModEnd> * length )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9608\n\n```\nCWE-476 static int dnxhd_find_frame_end ( DNXHDParserContext * dctx , const uint8_t * buf , int buf_size ) { ParseContext * pc = & dctx -> pc ; uint64_t state = pc -> state64 ; int pic_found = pc -> frame_start_found ; int i = 0 ; if ( ! pic_found ) { for ( i = 0 ; i < buf_size ; i ++ ) { state = ( state << 8 ) | buf [ i ] ; if ( ff_dnxhd_check_header_prefix ( state & 0xffffffffff00LL ) != 0 ) { i ++ ; pic_found = 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; break ; } } } if ( pic_found && ! dctx -> remaining ) { if ( ! buf_size ) return 0 ; for ( ; i < buf_size ; i ++ ) { dctx -> cur_byte ++ ; state = ( state << 8 ) | buf [ i ] ; if ( dctx -> cur_byte == 24 ) { dctx -> h = ( state >> 32 ) & 0xFFFF ; } else if ( dctx -> cur_byte == 26 ) { dctx -> w = ( state >> 32 ) & 0xFFFF ; } else if ( dctx -> cur_byte == 42 ) { int cid = ( state >> 32 ) & 0xFFFFFFFF ; <S2SV_StartBug> if ( cid <= 0 ) <S2SV_EndBug> continue ; <S2SV_StartBug> dctx -> remaining = avpriv_dnxhd_get_frame_size ( cid ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dctx -> remaining <= 0 ) { <S2SV_EndBug> <S2SV_StartBug> dctx -> remaining = ff_dnxhd_get_hr_frame_size ( cid , dctx -> w , dctx -> h ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dctx -> remaining <= 0 ) <S2SV_EndBug> <S2SV_StartBug> return dctx -> remaining ; <S2SV_EndBug> } if ( buf_size - i + 47 >= dctx -> remaining ) { int remaining = dctx -> remaining ; pc -> frame_start_found = 0 ; pc -> state64 = - 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; return remaining ; } else { dctx -> remaining -= buf_size ; } } } } else if ( pic_found ) { if ( dctx -> remaining > buf_size ) { dctx -> remaining -= buf_size ; } else { int remaining = dctx -> remaining ; pc -> frame_start_found = 0 ; pc -> state64 = - 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; return remaining ; } } pc -> frame_start_found = pic_found ; pc -> state64 = state ; return END_NOT_FOUND ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & 0xFFFFFFFF ; int remaining ; <S2SV_ModStart> ) continue ; <S2SV_ModEnd> remaining = avpriv_dnxhd_get_frame_size <S2SV_ModStart> ; if ( <S2SV_ModEnd> remaining <= 0 <S2SV_ModStart> 0 ) { <S2SV_ModEnd> remaining = ff_dnxhd_get_hr_frame_size <S2SV_ModStart> ; if ( <S2SV_ModEnd> remaining <= 0 <S2SV_ModStart> <= 0 ) continue ; } dctx -> remaining = remaining ; <S2SV_ModEnd> if ( buf_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 int ext4_punch_hole ( struct inode * inode , loff_t offset , loff_t length ) { struct super_block * sb = inode -> i_sb ; ext4_lblk_t first_block , stop_block ; struct address_space * mapping = inode -> i_mapping ; loff_t first_block_offset , last_block_offset ; handle_t * handle ; unsigned int credits ; int ret = 0 ; if ( ! S_ISREG ( inode -> i_mode ) ) return - EOPNOTSUPP ; trace_ext4_punch_hole ( inode , offset , length , 0 ) ; if ( mapping -> nrpages && mapping_tagged ( mapping , PAGECACHE_TAG_DIRTY ) ) { ret = filemap_write_and_wait_range ( mapping , offset , offset + length - 1 ) ; if ( ret ) return ret ; } mutex_lock ( & inode -> i_mutex ) ; if ( offset >= inode -> i_size ) goto out_mutex ; if ( offset + length > inode -> i_size ) { length = inode -> i_size + PAGE_CACHE_SIZE - ( inode -> i_size & ( PAGE_CACHE_SIZE - 1 ) ) - offset ; } if ( offset & ( sb -> s_blocksize - 1 ) || ( offset + length ) & ( sb -> s_blocksize - 1 ) ) { ret = ext4_inode_attach_jinode ( inode ) ; if ( ret < 0 ) goto out_mutex ; } <S2SV_StartBug> first_block_offset = round_up ( offset , sb -> s_blocksize ) ; <S2SV_EndBug> last_block_offset = round_down ( ( offset + length ) , sb -> s_blocksize ) - 1 ; if ( last_block_offset > first_block_offset ) truncate_pagecache_range ( inode , first_block_offset , last_block_offset ) ; <S2SV_StartBug> ext4_inode_block_unlocked_dio ( inode ) ; <S2SV_EndBug> inode_dio_wait ( inode ) ; if ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) credits = ext4_writepage_trans_blocks ( inode ) ; else credits = ext4_blocks_for_truncate ( inode ) ; handle = ext4_journal_start ( inode , EXT4_HT_TRUNCATE , credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; ext4_std_error ( sb , ret ) ; goto out_dio ; } ret = ext4_zero_partial_blocks ( handle , inode , offset , length ) ; if ( ret ) goto out_stop ; first_block = ( offset + sb -> s_blocksize - 1 ) >> EXT4_BLOCK_SIZE_BITS ( sb ) ; stop_block = ( offset + length ) >> EXT4_BLOCK_SIZE_BITS ( sb ) ; if ( first_block >= stop_block ) goto out_stop ; down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; ext4_discard_preallocations ( inode ) ; ret = ext4_es_remove_extent ( inode , first_block , stop_block - first_block ) ; if ( ret ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } if ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ret = ext4_ext_remove_space ( inode , first_block , stop_block - 1 ) ; else ret = ext4_ind_remove_space ( handle , inode , first_block , stop_block ) ; up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( IS_SYNC ( inode ) ) ext4_handle_sync ( handle ) ; <S2SV_StartBug> if ( last_block_offset > first_block_offset ) <S2SV_EndBug> truncate_pagecache_range ( inode , first_block_offset , last_block_offset ) ; inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; ext4_mark_inode_dirty ( handle , inode ) ; out_stop : ext4_journal_stop ( handle ) ; out_dio : <S2SV_StartBug> ext4_inode_resume_unlocked_dio ( inode ) ; <S2SV_EndBug> out_mutex : mutex_unlock ( & inode -> i_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_mutex ; } ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> last_block_offset ) ; <S2SV_ModEnd> if ( ext4_test_inode_flag <S2SV_ModStart> handle ) ; <S2SV_ModEnd> inode -> i_mtime <S2SV_ModStart> ; out_dio : up_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , char * * argv ) { int frame_cnt = 0 ; FILE * outfile = NULL ; vpx_codec_ctx_t codec ; vpx_codec_err_t res ; VpxVideoReader * reader = NULL ; const VpxInterface * decoder = NULL ; const VpxVideoInfo * info = NULL ; exec_name = argv [ 0 ] ; if ( argc != 3 ) die ( \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments.\" ) ; reader = vpx_video_reader_open ( argv [ 1 ] ) ; if ( ! reader ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading.\" , argv [ 1 ] ) ; if ( ! ( outfile = fopen ( argv [ 2 ] , \"wb\" ) ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\" , argv [ 2 ] ) ; info = vpx_video_reader_get_info ( reader ) ; decoder = get_vpx_decoder_by_fourcc ( info -> codec_fourcc ) ; if ( ! decoder ) die ( \"Unknown<S2SV_blank>input<S2SV_blank>codec.\" ) ; <S2SV_StartBug> printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( decoder -> interface ( ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> res = vpx_codec_dec_init ( & codec , decoder -> interface ( ) , NULL , <S2SV_EndBug> VPX_CODEC_USE_POSTPROC ) ; if ( res == VPX_CODEC_INCAPABLE ) die_codec ( & codec , \"Postproc<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>decoder.\" ) ; if ( res ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>decoder.\" ) ; while ( vpx_video_reader_read_frame ( reader ) ) { vpx_codec_iter_t iter = NULL ; vpx_image_t * img = NULL ; size_t frame_size = 0 ; const unsigned char * frame = vpx_video_reader_get_frame ( reader , & frame_size ) ; ++ frame_cnt ; if ( frame_cnt % 30 == 1 ) { vp8_postproc_cfg_t pp = { 0 , 0 , 0 } ; if ( vpx_codec_control ( & codec , VP8_SET_POSTPROC , & pp ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>turn<S2SV_blank>off<S2SV_blank>postproc.\" ) ; } else if ( frame_cnt % 30 == 16 ) { vp8_postproc_cfg_t pp = { VP8_DEBLOCK | VP8_DEMACROBLOCK | VP8_MFQE , 4 , 0 } ; if ( vpx_codec_control ( & codec , VP8_SET_POSTPROC , & pp ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>turn<S2SV_blank>on<S2SV_blank>postproc.\" ) ; } ; if ( vpx_codec_decode ( & codec , frame , ( unsigned int ) frame_size , NULL , 15000 ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>frame\" ) ; while ( ( img = vpx_codec_get_frame ( & codec , & iter ) ) != NULL ) { vpx_img_write ( img , outfile ) ; } } printf ( \"Processed<S2SV_blank>%d<S2SV_blank>frames.\\\\n\" , frame_cnt ) ; if ( vpx_codec_destroy ( & codec ) ) die_codec ( & codec , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>codec\" ) ; printf ( \"Play:<S2SV_blank>ffplay<S2SV_blank>-f<S2SV_blank>rawvideo<S2SV_blank>-pix_fmt<S2SV_blank>yuv420p<S2SV_blank>-s<S2SV_blank>%dx%d<S2SV_blank>%s\\\\n\" , info -> frame_width , info -> frame_height , argv [ 2 ] ) ; vpx_video_reader_close ( reader ) ; fclose ( outfile ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( decoder -> codec_interface <S2SV_ModEnd> ( ) ) <S2SV_ModStart> , decoder -> codec_interface <S2SV_ModEnd> ( ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 timestamp PGTYPEStimestamp_from_asc ( char * str , char * * endptr ) { timestamp result ; # ifdef HAVE_INT64_TIMESTAMP int64 noresult = 0 ; # else double noresult = 0.0 ; # endif fsec_t fsec ; struct tm tt , * tm = & tt ; int dtype ; int nf ; char * field [ MAXDATEFIELDS ] ; int ftype [ MAXDATEFIELDS ] ; char lowstr [ MAXDATELEN + MAXDATEFIELDS ] ; char * realptr ; char * * ptr = ( endptr != NULL ) ? endptr : & realptr ; <S2SV_StartBug> if ( strlen ( str ) >= sizeof ( lowstr ) ) <S2SV_EndBug> { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } <S2SV_StartBug> if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || <S2SV_EndBug> DecodeDateTime ( field , ftype , nf , & dtype , tm , & fsec , 0 ) != 0 ) { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } switch ( dtype ) { case DTK_DATE : if ( tm2timestamp ( tm , fsec , NULL , & result ) != 0 ) { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } break ; case DTK_EPOCH : result = SetEpochTimestamp ( ) ; break ; case DTK_LATE : TIMESTAMP_NOEND ( result ) ; break ; case DTK_EARLY : TIMESTAMP_NOBEGIN ( result ) ; break ; case DTK_INVALID : errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; default : errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } errno = 0 ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( str ) > MAXDATELEN ) { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || DecodeDateTime ( field , ftype , nf , & dtype , tm , & fsec , 0 ) != 0 ) { errno = PGTYPES_TS_BAD_TIMESTAMP ; return ( noresult ) ; } switch ( dtype ) { case DTK_DATE : if ( tm2timestamp ( tm , fsec , NULL , & result <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ) != 0 <S2SV_ModEnd> ) { errno\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 void Huff_Compress ( msg_t * mbuf , int offset ) { int i , ch , size ; byte seq [ 65536 ] ; byte * buffer ; huff_t huff ; size = mbuf -> cursize - offset ; buffer = mbuf -> data + + offset ; if ( size <= 0 ) { return ; } Com_Memset ( & huff , 0 , sizeof ( huff_t ) ) ; huff . tree = huff . lhead = huff . loc [ NYT ] = & ( huff . nodeList [ huff . blocNode ++ ] ) ; huff . tree -> symbol = NYT ; huff . tree -> weight = 0 ; huff . lhead -> next = huff . lhead -> prev = NULL ; huff . tree -> parent = huff . tree -> left = huff . tree -> right = NULL ; seq [ 0 ] = ( size >> 8 ) ; seq [ 1 ] = size & 0xff ; bloc = 16 ; for ( i = 0 ; i < size ; i ++ ) { ch = buffer [ i ] ; <S2SV_StartBug> Huff_transmit ( & huff , ch , seq ) ; <S2SV_EndBug> Huff_addRef ( & huff , ( byte ) ch ) ; } bloc += 8 ; mbuf -> cursize = ( bloc >> 3 ) + offset ; Com_Memcpy ( mbuf -> data + offset , seq , ( bloc >> 3 ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ch , seq , size << 3\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19947\n\n```\nCWE-908 static int kvaser_usb_leaf_simple_cmd_async ( struct kvaser_usb_net_priv * priv , u8 cmd_id ) { struct kvaser_cmd * cmd ; int err ; <S2SV_StartBug> cmd = kmalloc ( sizeof ( * cmd ) , GFP_ATOMIC ) ; <S2SV_EndBug> if ( ! cmd ) return - ENOMEM ; cmd -> len = CMD_HEADER_LEN + sizeof ( struct kvaser_cmd_simple ) ; cmd -> id = cmd_id ; cmd -> u . simple . channel = priv -> channel ; err = kvaser_usb_send_cmd_async ( priv , cmd , cmd -> len ) ; if ( err ) kfree ( cmd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; cmd = kzalloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20854\n\n```\nCWE-125 static struct phy * serdes_simple_xlate ( struct device * dev , struct of_phandle_args * args ) { struct serdes_ctrl * ctrl = dev_get_drvdata ( dev ) ; unsigned int port , idx , i ; if ( args -> args_count != 2 ) return ERR_PTR ( - EINVAL ) ; port = args -> args [ 0 ] ; idx = args -> args [ 1 ] ; <S2SV_StartBug> for ( i = 0 ; i <= SERDES_MAX ; i ++ ) { <S2SV_EndBug> struct serdes_macro * macro = phy_get_drvdata ( ctrl -> phys [ i ] ) ; if ( idx != macro -> idx ) continue ; if ( idx != SERDES6G ( 0 ) && macro -> port >= 0 ) return ERR_PTR ( - EBUSY ) ; macro -> port = port ; return ctrl -> phys [ i ] ; } return ERR_PTR ( - ENODEV ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; i < <S2SV_ModEnd> SERDES_MAX ; i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_sb ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_EndBug> TOKENEXTRA * * tp , int mi_row , int mi_col , <S2SV_StartBug> int output_enabled , BLOCK_SIZE bsize ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> const int bsl = b_width_log2 ( bsize ) , hbs = ( 1 << bsl ) / 4 ; <S2SV_EndBug> int ctx ; PARTITION_TYPE partition ; <S2SV_StartBug> BLOCK_SIZE subsize ; <S2SV_EndBug> if ( mi_row >= cm -> mi_rows || mi_col >= cm -> mi_cols ) return ; if ( bsize >= BLOCK_8X8 ) { ctx = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> subsize = * get_sb_partitioning ( x , bsize ) ; <S2SV_EndBug> } else { ctx = 0 ; subsize = BLOCK_4X4 ; } <S2SV_StartBug> partition = partition_lookup [ bsl ] [ subsize ] ; <S2SV_EndBug> switch ( partition ) { case PARTITION_NONE : <S2SV_StartBug> if ( output_enabled && bsize >= BLOCK_8X8 ) <S2SV_EndBug> cm -> counts . partition [ ctx ] [ PARTITION_NONE ] ++ ; <S2SV_StartBug> encode_b ( cpi , tile , tp , mi_row , mi_col , output_enabled , subsize ) ; <S2SV_EndBug> break ; case PARTITION_VERT : <S2SV_StartBug> if ( output_enabled ) <S2SV_EndBug> cm -> counts . partition [ ctx ] [ PARTITION_VERT ] ++ ; * get_sb_index ( x , subsize ) = 0 ; encode_b ( cpi , tile , tp , mi_row , mi_col , output_enabled , subsize ) ; <S2SV_StartBug> if ( mi_col + hbs < cm -> mi_cols ) { <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; encode_b ( cpi , tile , tp , mi_row , mi_col + hbs , output_enabled , subsize ) ; } break ; case PARTITION_HORZ : <S2SV_StartBug> if ( output_enabled ) <S2SV_EndBug> cm -> counts . partition [ ctx ] [ PARTITION_HORZ ] ++ ; * get_sb_index ( x , subsize ) = 0 ; encode_b ( cpi , tile , tp , mi_row , mi_col , output_enabled , subsize ) ; <S2SV_StartBug> if ( mi_row + hbs < cm -> mi_rows ) { <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; encode_b ( cpi , tile , tp , mi_row + hbs , mi_col , output_enabled , subsize ) ; } break ; case PARTITION_SPLIT : <S2SV_StartBug> subsize = get_subsize ( bsize , PARTITION_SPLIT ) ; <S2SV_EndBug> if ( output_enabled ) cm -> counts . partition [ ctx ] [ PARTITION_SPLIT ] ++ ; * get_sb_index ( x , subsize ) = 0 ; <S2SV_StartBug> encode_sb ( cpi , tile , tp , mi_row , mi_col , output_enabled , subsize ) ; <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; <S2SV_StartBug> encode_sb ( cpi , tile , tp , mi_row , mi_col + hbs , output_enabled , subsize ) ; <S2SV_EndBug> * get_sb_index ( x , subsize ) = 2 ; <S2SV_StartBug> encode_sb ( cpi , tile , tp , mi_row + hbs , mi_col , output_enabled , subsize ) ; <S2SV_EndBug> * get_sb_index ( x , subsize ) = 3 ; encode_sb ( cpi , tile , tp , mi_row + hbs , mi_col + hbs , output_enabled , subsize ) ; break ; default : <S2SV_StartBug> assert ( \"Invalid<S2SV_blank>partition<S2SV_blank>type.\" ) ; <S2SV_EndBug> } if ( partition != PARTITION_SPLIT || bsize == BLOCK_8X8 ) update_partition_context ( xd , mi_row , mi_col , subsize , bsize ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , <S2SV_ModStart> , BLOCK_SIZE bsize , PC_TREE * pc_tree <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> int bsl = b_width_log2_lookup [ bsize ] <S2SV_ModEnd> , hbs = <S2SV_ModStart> ; BLOCK_SIZE subsize = bsize <S2SV_ModStart> ; subsize = get_subsize ( bsize , pc_tree -> partitioning <S2SV_ModEnd> ) ; } <S2SV_ModStart> [ subsize ] ; if ( output_enabled && bsize != BLOCK_4X4 ) td -> counts -> partition [ ctx ] [ partition ] ++ <S2SV_ModStart> case PARTITION_NONE : <S2SV_ModEnd> encode_b ( cpi <S2SV_ModStart> , tile , td , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> none <S2SV_ModEnd> ) ; break <S2SV_ModStart> case PARTITION_VERT : encode_b ( cpi , tile , td , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> vertical [ 0 ] <S2SV_ModEnd> ) ; if <S2SV_ModStart> cm -> mi_cols && bsize > BLOCK_8X8 ) { encode_b ( cpi , tile , td , tp , mi_row , mi_col + hbs , output_enabled , subsize , & pc_tree -> vertical [ 1 ] <S2SV_ModEnd> ) ; } <S2SV_ModStart> case PARTITION_HORZ : encode_b ( cpi , tile , td , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> horizontal [ 0 ] <S2SV_ModEnd> ) ; if <S2SV_ModStart> cm -> mi_rows && bsize > BLOCK_8X8 ) { encode_b ( cpi , tile , td , tp , mi_row + hbs , mi_col , output_enabled , subsize , & pc_tree -> horizontal [ 1 ] <S2SV_ModEnd> ) ; } <S2SV_ModStart> case PARTITION_SPLIT : if ( bsize == BLOCK_8X8 ) { encode_b ( cpi , tile , td , tp , mi_row , mi_col , output_enabled , subsize , pc_tree -> leaf_split [ 0 ] ) ; } else { <S2SV_ModEnd> encode_sb ( cpi <S2SV_ModStart> ( cpi , td , tile , tp , mi_row , mi_col , output_enabled , subsize , pc_tree -> split [ 0 ] ) ; encode_sb ( cpi , td , tile , tp , mi_row , mi_col + hbs , output_enabled , subsize , pc_tree -> split [ 1 ] ) <S2SV_ModEnd> ; encode_sb ( <S2SV_ModStart> ( cpi , td , tile , tp , mi_row + hbs , mi_col , output_enabled , subsize , pc_tree -> split [ 2 ] ) <S2SV_ModEnd> ; encode_sb ( <S2SV_ModStart> ( cpi , td , tile , tp , mi_row + hbs , mi_col + hbs , output_enabled , subsize , pc_tree -> split [ 3 ] ) ; } <S2SV_ModEnd> break ; default <S2SV_ModStart> : assert ( 0 && \"Invalid<S2SV_blank>partition<S2SV_blank>type.\" ) ; break <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4513\n\n```\nCWE-119 static ssize_t oz_cdev_write ( struct file * filp , const char __user * buf , size_t count , loff_t * fpos ) { struct oz_pd * pd ; struct oz_elt_buf * eb ; struct oz_elt_info * ei ; struct oz_elt * elt ; struct oz_app_hdr * app_hdr ; struct oz_serial_ctx * ctx ; <S2SV_StartBug> spin_lock_bh ( & g_cdev . lock ) ; <S2SV_EndBug> pd = g_cdev . active_pd ; if ( pd ) oz_pd_get ( pd ) ; spin_unlock_bh ( & g_cdev . lock ) ; if ( pd == NULL ) return - ENXIO ; if ( ! ( pd -> state & OZ_PD_S_CONNECTED ) ) return - EAGAIN ; eb = & pd -> elt_buff ; ei = oz_elt_info_alloc ( eb ) ; if ( ei == NULL ) { count = 0 ; goto out ; } elt = ( struct oz_elt * ) ei -> data ; app_hdr = ( struct oz_app_hdr * ) ( elt + 1 ) ; elt -> length = sizeof ( struct oz_app_hdr ) + count ; elt -> type = OZ_ELT_APP_DATA ; ei -> app_id = OZ_APPID_SERIAL ; ei -> length = elt -> length + sizeof ( struct oz_elt ) ; app_hdr -> app_id = OZ_APPID_SERIAL ; if ( copy_from_user ( app_hdr + 1 , buf , count ) ) goto out ; spin_lock_bh ( & pd -> app_lock [ OZ_APPID_USB - 1 ] ) ; ctx = ( struct oz_serial_ctx * ) pd -> app_ctx [ OZ_APPID_SERIAL - 1 ] ; if ( ctx ) { app_hdr -> elt_seq_num = ctx -> tx_seq_num ++ ; if ( ctx -> tx_seq_num == 0 ) ctx -> tx_seq_num = 1 ; spin_lock ( & eb -> lock ) ; if ( oz_queue_elt_info ( eb , 0 , 0 , ei ) == 0 ) ei = NULL ; spin_unlock ( & eb -> lock ) ; } spin_unlock_bh ( & pd -> app_lock [ OZ_APPID_USB - 1 ] ) ; out : if ( ei ) { count = 0 ; spin_lock_bh ( & eb -> lock ) ; oz_elt_info_free ( eb , ei ) ; spin_unlock_bh ( & eb -> lock ) ; } oz_pd_put ( pd ) ; return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx ; if ( count > sizeof ( ei -> data ) - sizeof ( * elt ) - sizeof ( * app_hdr ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 ssize_t cdf_read_sector ( const cdf_info_t * info , void * buf , size_t offs , size_t len , const cdf_header_t * h , cdf_secid_t id ) { <S2SV_StartBug> assert ( ( size_t ) CDF_SEC_SIZE ( h ) == len ) ; <S2SV_EndBug> <S2SV_StartBug> return cdf_read ( info , ( off_t ) CDF_SEC_POS ( h , id ) , <S2SV_EndBug> ( ( char * ) buf ) + offs , len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ) { size_t ss = <S2SV_ModEnd> CDF_SEC_SIZE ( h <S2SV_ModStart> ( h ) ; size_t pos = CDF_SEC_POS ( h , id ) ; assert ( ss <S2SV_ModStart> ( off_t ) pos , <S2SV_ModEnd> ( ( char\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void * listen_fn_ ( UNUSED_ATTR void * context ) { prctl ( PR_SET_NAME , ( unsigned long ) LISTEN_THREAD_NAME_ , 0 , 0 , 0 ) ; listen_socket_ = socket ( AF_INET , SOCK_STREAM , IPPROTO_TCP ) ; if ( listen_socket_ == - 1 ) { LOG_ERROR ( \"%s<S2SV_blank>socket<S2SV_blank>creation<S2SV_blank>failed:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; goto cleanup ; } int enable = 1 ; if ( setsockopt ( listen_socket_ , SOL_SOCKET , SO_REUSEADDR , & enable , sizeof ( enable ) ) == - 1 ) { LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>SO_REUSEADDR:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; goto cleanup ; } struct sockaddr_in addr ; addr . sin_family = AF_INET ; addr . sin_addr . s_addr = htonl ( LOCALHOST_ ) ; addr . sin_port = htons ( LISTEN_PORT_ ) ; if ( bind ( listen_socket_ , ( struct sockaddr * ) & addr , sizeof ( addr ) ) == - 1 ) { LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>bind<S2SV_blank>listen<S2SV_blank>socket:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; goto cleanup ; } if ( listen ( listen_socket_ , 10 ) == - 1 ) { LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>listen:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; goto cleanup ; } for ( ; ; ) { <S2SV_StartBug> int client_socket = accept ( listen_socket_ , NULL , NULL ) ; <S2SV_EndBug> if ( client_socket == - 1 ) { if ( errno == EINVAL || errno == EBADF ) { break ; } LOG_WARN ( \"%s<S2SV_blank>error<S2SV_blank>accepting<S2SV_blank>socket:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; continue ; } pthread_mutex_lock ( & client_socket_lock_ ) ; safe_close_ ( & client_socket_ ) ; client_socket_ = client_socket ; <S2SV_StartBug> send ( client_socket_ , \"btsnoop\\\\0\\\\0\\\\0\\\\0\\\\1\\\\0\\\\0\\\\x3\\\\xea\" , 16 , 0 ) ; <S2SV_EndBug> pthread_mutex_unlock ( & client_socket_lock_ ) ; } cleanup : safe_close_ ( & listen_socket_ ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int client_socket = TEMP_FAILURE_RETRY ( <S2SV_ModStart> NULL , NULL ) <S2SV_ModStart> = client_socket ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> 16 , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19083\n\n```\nCWE-401 struct clock_source * dce112_clock_source_create ( struct dc_context * ctx , struct dc_bios * bios , enum clock_source_id id , const struct dce110_clk_src_regs * regs , bool dp_clk_src ) { struct dce110_clk_src * clk_src = kzalloc ( sizeof ( struct dce110_clk_src ) , GFP_KERNEL ) ; if ( ! clk_src ) return NULL ; if ( dce112_clk_src_construct ( clk_src , ctx , bios , id , regs , & cs_shift , & cs_mask ) ) { clk_src -> base . dp_clk_src = dp_clk_src ; return & clk_src -> base ; } <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base ; } kfree ( clk_src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static int ext4_writepage ( struct page * page , struct writeback_control * wbc ) { int ret = 0 ; loff_t size ; unsigned int len ; <S2SV_StartBug> struct buffer_head * page_bufs ; <S2SV_EndBug> struct inode * inode = page -> mapping -> host ; trace_ext4_writepage ( inode , page ) ; size = i_size_read ( inode ) ; if ( page -> index == size >> PAGE_CACHE_SHIFT ) len = size & ~ PAGE_CACHE_MASK ; else len = PAGE_CACHE_SIZE ; if ( page_has_buffers ( page ) ) { page_bufs = page_buffers ( page ) ; if ( walk_page_buffers ( NULL , page_bufs , 0 , len , NULL , ext4_bh_delay_or_unwritten ) ) { redirty_page_for_writepage ( wbc , page ) ; unlock_page ( page ) ; return 0 ; } } else { ret = block_prepare_write ( page , 0 , len , noalloc_get_block_write ) ; if ( ! ret ) { page_bufs = page_buffers ( page ) ; if ( walk_page_buffers ( NULL , page_bufs , 0 , len , NULL , ext4_bh_delay_or_unwritten ) ) { redirty_page_for_writepage ( wbc , page ) ; unlock_page ( page ) ; return 0 ; } } else { redirty_page_for_writepage ( wbc , page ) ; unlock_page ( page ) ; return 0 ; } block_commit_write ( page , 0 , len ) ; } if ( PageChecked ( page ) && ext4_should_journal_data ( inode ) ) { ClearPageChecked ( page ) ; return __ext4_journalled_writepage ( page , len ) ; } if ( test_opt ( inode -> i_sb , NOBH ) && ext4_should_writeback_data ( inode ) ) ret = nobh_writepage ( page , noalloc_get_block_write , wbc ) ; <S2SV_StartBug> else <S2SV_EndBug> ret = block_write_full_page ( page , noalloc_get_block_write , wbc ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer_head * page_bufs = NULL <S2SV_ModStart> ) ; else if ( page_bufs && buffer_uninit ( page_bufs ) ) { ext4_set_bh_endio ( page_bufs , inode ) ; ret = block_write_full_page_endio ( page , noalloc_get_block_write , wbc , ext4_end_io_buffer_write ) ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_resize_plane ( const uint8_t * const input , int height , int width , int in_stride , uint8_t * output , int height2 , int width2 , int out_stride ) { int i ; uint8_t * intbuf = ( uint8_t * ) malloc ( sizeof ( uint8_t ) * width2 * height ) ; uint8_t * tmpbuf = ( uint8_t * ) malloc ( sizeof ( uint8_t ) * ( width < height ? height : width ) ) ; uint8_t * arrbuf = ( uint8_t * ) malloc ( sizeof ( uint8_t ) * ( height + height2 ) ) ; <S2SV_StartBug> for ( i = 0 ; i < height ; ++ i ) <S2SV_EndBug> resize_multistep ( input + in_stride * i , width , intbuf + width2 * i , width2 , tmpbuf ) ; for ( i = 0 ; i < width2 ; ++ i ) { fill_col_to_arr ( intbuf + i , width2 , height , arrbuf ) ; resize_multistep ( arrbuf , height , arrbuf + height , height2 , tmpbuf ) ; fill_arr_to_col ( output + i , out_stride , height2 , arrbuf + height ) ; } free ( intbuf ) ; free ( tmpbuf ) ; free ( arrbuf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; assert ( width > 0 ) ; assert ( height > 0 ) ; assert ( width2 > 0 ) ; assert ( height2 > 0 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-25669\n\n```\nCWE-416 static irqreturn_t sunkbd_interrupt ( struct serio * serio , unsigned char data , unsigned int flags ) { struct sunkbd * sunkbd = serio_get_drvdata ( serio ) ; if ( sunkbd -> reset <= - 1 ) { sunkbd -> reset = data ; wake_up_interruptible ( & sunkbd -> wait ) ; goto out ; } if ( sunkbd -> layout == - 1 ) { sunkbd -> layout = data ; wake_up_interruptible ( & sunkbd -> wait ) ; goto out ; } switch ( data ) { case SUNKBD_RET_RESET : <S2SV_StartBug> schedule_work ( & sunkbd -> tq ) ; <S2SV_EndBug> sunkbd -> reset = - 1 ; break ; case SUNKBD_RET_LAYOUT : sunkbd -> layout = - 1 ; break ; case SUNKBD_RET_ALLUP : break ; default : if ( ! sunkbd -> enabled ) break ; if ( sunkbd -> keycode [ data & SUNKBD_KEY ] ) { input_report_key ( sunkbd -> dev , sunkbd -> keycode [ data & SUNKBD_KEY ] , ! ( data & SUNKBD_RELEASE ) ) ; input_sync ( sunkbd -> dev ) ; } else { printk ( KERN_WARNING \"sunkbd.c:<S2SV_blank>Unknown<S2SV_blank>key<S2SV_blank>(scancode<S2SV_blank>%#x)<S2SV_blank>%s.\\\\n\" , data & SUNKBD_KEY , data & SUNKBD_RELEASE ? \"released\" : \"pressed\" ) ; } } out : return IRQ_HANDLED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case SUNKBD_RET_RESET : if ( sunkbd -> enabled )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13308\n\n```\nCWE-787 static MagickBooleanType EncodeImage ( const ImageInfo * image_info , Image * image , const size_t data_size , ExceptionInfo * exception ) { # define MaxCode ( number_bits ) ( ( one << ( number_bits ) ) - 1 ) # define MaxHashTable 5003 # define MaxGIFBits 12UL # define MaxGIFTable ( 1UL << MaxGIFBits ) <S2SV_StartBug> # define GIFOutputCode ( code ) { if ( bits > 0 ) datum |= ( size_t ) ( code ) << bits ; else datum = ( size_t ) ( code ) ; bits += number_bits ; while ( bits >= 8 ) { packet [ length ++ ] = ( unsigned char ) ( datum & 0xff ) ; if ( length >= 254 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; length = 0 ; } datum >>= 8 ; bits -= 8 ; } if ( free_code > max_code ) { number_bits ++ ; if ( number_bits == MaxGIFBits ) max_code = MaxGIFTable ; else max_code = MaxCode ( number_bits ) ; } } <S2SV_EndBug> Quantum index ; short * hash_code , * hash_prefix , waiting_code ; size_t bits , clear_code , datum , end_of_information_code , free_code , length , max_code , next_pixel , number_bits , one , pass ; ssize_t displacement , offset , k , y ; unsigned char * packet , * hash_suffix ; assert ( image != ( Image * ) NULL ) ; one = 1 ; packet = ( unsigned char * ) AcquireQuantumMemory ( 256 , sizeof ( * packet ) ) ; hash_code = ( short * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_code ) ) ; hash_prefix = ( short * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_prefix ) ) ; hash_suffix = ( unsigned char * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_suffix ) ) ; if ( ( packet == ( unsigned char * ) NULL ) || ( hash_code == ( short * ) NULL ) || ( hash_prefix == ( short * ) NULL ) || ( hash_suffix == ( unsigned char * ) NULL ) ) { if ( packet != ( unsigned char * ) NULL ) packet = ( unsigned char * ) RelinquishMagickMemory ( packet ) ; if ( hash_code != ( short * ) NULL ) hash_code = ( short * ) RelinquishMagickMemory ( hash_code ) ; if ( hash_prefix != ( short * ) NULL ) hash_prefix = ( short * ) RelinquishMagickMemory ( hash_prefix ) ; if ( hash_suffix != ( unsigned char * ) NULL ) hash_suffix = ( unsigned char * ) RelinquishMagickMemory ( hash_suffix ) ; return ( MagickFalse ) ; } ( void ) memset ( packet , 0 , 256 * sizeof ( * packet ) ) ; ( void ) memset ( hash_code , 0 , MaxHashTable * sizeof ( * hash_code ) ) ; ( void ) memset ( hash_prefix , 0 , MaxHashTable * sizeof ( * hash_prefix ) ) ; ( void ) memset ( hash_suffix , 0 , MaxHashTable * sizeof ( * hash_suffix ) ) ; number_bits = data_size ; max_code = MaxCode ( number_bits ) ; clear_code = ( ( short ) one << ( data_size - 1 ) ) ; end_of_information_code = clear_code + 1 ; free_code = clear_code + 2 ; length = 0 ; datum = 0 ; bits = 0 ; GIFOutputCode ( clear_code ) ; offset = 0 ; pass = 0 ; waiting_code = 0 ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register const Quantum * magick_restrict p ; register ssize_t x ; p = GetVirtualPixels ( image , 0 , offset , image -> columns , 1 , exception ) ; if ( p == ( const Quantum * ) NULL ) break ; if ( y == 0 ) { waiting_code = ( short ) GetPixelIndex ( image , p ) ; p += GetPixelChannels ( image ) ; } for ( x = ( ssize_t ) ( y == 0 ? 1 : 0 ) ; x < ( ssize_t ) image -> columns ; x ++ ) { <S2SV_StartBug> index = ( Quantum ) ( ( size_t ) GetPixelIndex ( image , p ) & 0xff ) ; <S2SV_EndBug> p += GetPixelChannels ( image ) ; k = ( ssize_t ) ( ( ( size_t ) index << ( MaxGIFBits - 8 ) ) + waiting_code ) ; if ( k >= MaxHashTable ) k -= MaxHashTable ; <S2SV_StartBug> next_pixel = MagickFalse ; <S2SV_EndBug> displacement = 1 ; if ( hash_code [ k ] > 0 ) { if ( ( hash_prefix [ k ] == waiting_code ) && ( hash_suffix [ k ] == ( unsigned char ) index ) ) { waiting_code = hash_code [ k ] ; continue ; } if ( k != 0 ) displacement = MaxHashTable - k ; for ( ; ; ) { k -= displacement ; if ( k < 0 ) k += MaxHashTable ; if ( hash_code [ k ] == 0 ) break ; if ( ( hash_prefix [ k ] == waiting_code ) && ( hash_suffix [ k ] == ( unsigned char ) index ) ) { waiting_code = hash_code [ k ] ; next_pixel = MagickTrue ; break ; } } if ( next_pixel != MagickFalse ) continue ; } GIFOutputCode ( waiting_code ) ; if ( free_code < MaxGIFTable ) { hash_code [ k ] = ( short ) free_code ++ ; hash_prefix [ k ] = waiting_code ; hash_suffix [ k ] = ( unsigned char ) index ; } else { for ( k = 0 ; k < MaxHashTable ; k ++ ) hash_code [ k ] = 0 ; free_code = clear_code + 2 ; GIFOutputCode ( clear_code ) ; number_bits = data_size ; max_code = MaxCode ( number_bits ) ; } waiting_code = ( short ) index ; } if ( image_info -> interlace == NoInterlace ) offset ++ ; else switch ( pass ) { case 0 : default : { offset += 8 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 4 ; } break ; } case 1 : { offset += 8 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 2 ; } break ; } case 2 : { offset += 4 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 1 ; } break ; } case 3 : { offset += 2 ; break ; } } } GIFOutputCode ( waiting_code ) ; GIFOutputCode ( end_of_information_code ) ; if ( bits > 0 ) { packet [ length ++ ] = ( unsigned char ) ( datum & 0xff ) ; if ( length >= 254 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; length = 0 ; } } if ( length > 0 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; } hash_suffix = ( unsigned char * ) RelinquishMagickMemory ( hash_suffix ) ; hash_prefix = ( short * ) RelinquishMagickMemory ( hash_prefix ) ; hash_code = ( short * ) RelinquishMagickMemory ( hash_code ) ; packet = ( unsigned char * ) RelinquishMagickMemory ( packet ) ; return ( MagickTrue ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( code ) \\\\\\n{ <S2SV_ModEnd> if ( bits <S2SV_ModStart> ) ; } \\\\\\n} <S2SV_ModEnd> Quantum index ; <S2SV_ModStart> ++ ) { next_pixel = MagickFalse ; displacement = 1 ; <S2SV_ModStart> -= MaxHashTable ; if ( k < 0 ) continue <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4176\n\n```\nCWE-200 void __detach_mounts ( struct dentry * dentry ) { struct mountpoint * mp ; struct mount * mnt ; namespace_lock ( ) ; mp = lookup_mountpoint ( dentry ) ; if ( IS_ERR_OR_NULL ( mp ) ) goto out_unlock ; lock_mount_hash ( ) ; while ( ! hlist_empty ( & mp -> m_list ) ) { mnt = hlist_entry ( mp -> m_list . first , struct mount , mnt_mp_list ) ; if ( mnt -> mnt . mnt_flags & MNT_UMOUNT ) { struct mount * p , * tmp ; list_for_each_entry_safe ( p , tmp , & mnt -> mnt_mounts , mnt_child ) { hlist_add_head ( & p -> mnt_umount . s_list , & unmounted ) ; umount_mnt ( p ) ; } } <S2SV_StartBug> else umount_tree ( mnt , 0 ) ; <S2SV_EndBug> } unlock_mount_hash ( ) ; put_mountpoint ( mp ) ; out_unlock : namespace_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( mnt , UMOUNT_CONNECTED <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16839\n\n```\nCWE-119 CURLcode Curl_auth_create_plain_message ( struct Curl_easy * data , const char * userp , const char * passwdp , char * * outptr , size_t * outlen ) { CURLcode result ; char * plainauth ; size_t ulen ; size_t plen ; size_t plainlen ; * outlen = 0 ; * outptr = NULL ; ulen = strlen ( userp ) ; plen = strlen ( passwdp ) ; <S2SV_StartBug> if ( ( ulen > SIZE_T_MAX / 2 ) || ( plen > ( SIZE_T_MAX / 2 - 2 ) ) ) <S2SV_EndBug> return CURLE_OUT_OF_MEMORY ; plainlen = 2 * ulen + plen + 2 ; plainauth = malloc ( plainlen ) ; if ( ! plainauth ) return CURLE_OUT_OF_MEMORY ; memcpy ( plainauth , userp , ulen ) ; plainauth [ ulen ] = '\\\\0' ; memcpy ( plainauth + ulen + 1 , userp , ulen ) ; plainauth [ 2 * ulen + 1 ] = '\\\\0' ; memcpy ( plainauth + 2 * ulen + 2 , passwdp , plen ) ; result = Curl_base64_encode ( data , plainauth , plainlen , outptr , outlen ) ; free ( plainauth ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> > SIZE_T_MAX / 4 <S2SV_ModEnd> ) || (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0807\n\n```\nCWE-119 char * suhosin_decrypt_single_cookie ( char * name , int name_len , char * value , int value_len , char * key , char * * where TSRMLS_DC ) { <S2SV_StartBug> char buffer [ 4096 ] ; <S2SV_EndBug> char buffer2 [ 4096 ] ; int o_name_len = name_len ; <S2SV_StartBug> char * buf = buffer , * buf2 = buffer2 , * d , * d_url ; <S2SV_EndBug> int l ; <S2SV_StartBug> if ( name_len > sizeof ( buffer ) - 2 ) { <S2SV_EndBug> buf = estrndup ( name , name_len ) ; <S2SV_StartBug> } else { <S2SV_EndBug> memcpy ( buf , name , name_len ) ; buf [ name_len ] = 0 ; } name_len = php_url_decode ( buf , name_len ) ; normalize_varname ( buf ) ; name_len = strlen ( buf ) ; if ( SUHOSIN_G ( cookie_plainlist ) ) { if ( zend_hash_exists ( SUHOSIN_G ( cookie_plainlist ) , buf , name_len + 1 ) ) { decrypt_return_plain : <S2SV_StartBug> if ( buf != buffer ) { <S2SV_EndBug> efree ( buf ) ; } memcpy ( * where , name , o_name_len ) ; * where += o_name_len ; * * where = '=' ; * where += 1 ; memcpy ( * where , value , value_len ) ; * where += value_len ; return * where ; } } else if ( SUHOSIN_G ( cookie_cryptlist ) ) { if ( ! zend_hash_exists ( SUHOSIN_G ( cookie_cryptlist ) , buf , name_len + 1 ) ) { goto decrypt_return_plain ; } } <S2SV_StartBug> if ( strlen ( value ) <= sizeof ( buffer2 ) - 2 ) { <S2SV_EndBug> memcpy ( buf2 , value , value_len ) ; buf2 [ value_len ] = 0 ; } else { buf2 = estrndup ( value , value_len ) ; } value_len = php_url_decode ( buf2 , value_len ) ; d = suhosin_decrypt_string ( buf2 , value_len , buf , name_len , key , & l , SUHOSIN_G ( cookie_checkraddr ) TSRMLS_CC ) ; if ( d == NULL ) { goto skip_cookie ; } d_url = php_url_encode ( d , l , & l ) ; efree ( d ) ; memcpy ( * where , name , o_name_len ) ; * where += o_name_len ; * * where = '=' ; * where += 1 ; memcpy ( * where , d_url , l ) ; * where += l ; efree ( d_url ) ; skip_cookie : <S2SV_StartBug> if ( buf != buffer ) { <S2SV_EndBug> efree ( buf ) ; } if ( buf2 != buffer2 ) { efree ( buf2 ) ; } return * where ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TSRMLS_DC ) { <S2SV_ModEnd> int o_name_len = <S2SV_ModStart> char * buf , * buf2 <S2SV_ModEnd> , * d <S2SV_ModStart> int l ; <S2SV_ModEnd> buf = estrndup <S2SV_ModStart> name_len ) ; <S2SV_ModEnd> name_len = php_url_decode <S2SV_ModStart> { decrypt_return_plain : efree ( buf ) ; <S2SV_ModEnd> memcpy ( * <S2SV_ModStart> ; } } buf2 = estrndup ( value , value_len ) ; <S2SV_ModEnd> value_len = php_url_decode <S2SV_ModStart> ; skip_cookie : efree ( buf ) ; efree ( buf2 ) ; <S2SV_ModEnd> return * where\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static double calc_correction_factor ( double err_per_mb , double err_divisor , double pt_low , double pt_high , <S2SV_StartBug> int q ) { <S2SV_EndBug> const double error_term = err_per_mb / err_divisor ; <S2SV_StartBug> const double power_term = MIN ( vp9_convert_qindex_to_q ( q ) * 0.0125 + pt_low , <S2SV_EndBug> pt_high ) ; if ( power_term < 1.0 ) assert ( error_term >= 0.0 ) ; return fclamp ( pow ( error_term , power_term ) , 0.05 , 5.0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int q , vpx_bit_depth_t bit_depth <S2SV_ModStart> vp9_convert_qindex_to_q ( q , bit_depth ) * 0.01 <S2SV_ModEnd> + pt_low ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14106\n\n```\nCWE-369 int tcp_disconnect ( struct sock * sk , int flags ) { struct inet_sock * inet = inet_sk ( sk ) ; struct inet_connection_sock * icsk = inet_csk ( sk ) ; struct tcp_sock * tp = tcp_sk ( sk ) ; int err = 0 ; int old_state = sk -> sk_state ; if ( old_state != TCP_CLOSE ) tcp_set_state ( sk , TCP_CLOSE ) ; if ( old_state == TCP_LISTEN ) { inet_csk_listen_stop ( sk ) ; } else if ( unlikely ( tp -> repair ) ) { sk -> sk_err = ECONNABORTED ; } else if ( tcp_need_reset ( old_state ) || ( tp -> snd_nxt != tp -> write_seq && ( 1 << old_state ) & ( TCPF_CLOSING | TCPF_LAST_ACK ) ) ) { tcp_send_active_reset ( sk , gfp_any ( ) ) ; sk -> sk_err = ECONNRESET ; } else if ( old_state == TCP_SYN_SENT ) sk -> sk_err = ECONNRESET ; tcp_clear_xmit_timers ( sk ) ; __skb_queue_purge ( & sk -> sk_receive_queue ) ; tcp_write_queue_purge ( sk ) ; tcp_fastopen_active_disable_ofo_check ( sk ) ; skb_rbtree_purge ( & tp -> out_of_order_queue ) ; inet -> inet_dport = 0 ; if ( ! ( sk -> sk_userlocks & SOCK_BINDADDR_LOCK ) ) inet_reset_saddr ( sk ) ; sk -> sk_shutdown = 0 ; sock_reset_flag ( sk , SOCK_DONE ) ; tp -> srtt_us = 0 ; tp -> write_seq += tp -> max_window + 2 ; if ( tp -> write_seq == 0 ) tp -> write_seq = 1 ; icsk -> icsk_backoff = 0 ; tp -> snd_cwnd = 2 ; icsk -> icsk_probes_out = 0 ; tp -> packets_out = 0 ; tp -> snd_ssthresh = TCP_INFINITE_SSTHRESH ; tp -> snd_cwnd_cnt = 0 ; tp -> window_clamp = 0 ; tcp_set_ca_state ( sk , TCP_CA_Open ) ; tcp_clear_retrans ( tp ) ; inet_csk_delack_init ( sk ) ; <S2SV_StartBug> tcp_init_send_head ( sk ) ; <S2SV_EndBug> memset ( & tp -> rx_opt , 0 , sizeof ( tp -> rx_opt ) ) ; __sk_dst_reset ( sk ) ; tcp_saved_syn_free ( tp ) ; tcp_free_fastopen_req ( tp ) ; inet -> defer_connect = 0 ; WARN_ON ( inet -> inet_num && ! icsk -> icsk_bind_hash ) ; sk -> sk_error_report ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk ) ; icsk -> icsk_ack . rcv_mss = TCP_MIN_MSS ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8160\n\n```\nCWE-20 static bool generic_new ( struct nf_conn * ct , const struct sk_buff * skb , unsigned int dataoff , unsigned int * timeouts ) { <S2SV_StartBug> return true ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return nf_generic_should_process ( nf_ct_protonum ( ct ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3212\n\n```\nCWE-362 static int sctp_init_sock ( struct sock * sk ) { struct net * net = sock_net ( sk ) ; struct sctp_sock * sp ; pr_debug ( \"%s:<S2SV_blank>sk:%p\\\\n\" , __func__ , sk ) ; sp = sctp_sk ( sk ) ; switch ( sk -> sk_type ) { case SOCK_SEQPACKET : sp -> type = SCTP_SOCKET_UDP ; break ; case SOCK_STREAM : sp -> type = SCTP_SOCKET_TCP ; break ; default : return - ESOCKTNOSUPPORT ; } sp -> default_stream = 0 ; sp -> default_ppid = 0 ; sp -> default_flags = 0 ; sp -> default_context = 0 ; sp -> default_timetolive = 0 ; sp -> default_rcv_context = 0 ; sp -> max_burst = net -> sctp . max_burst ; sp -> sctp_hmac_alg = net -> sctp . sctp_hmac_alg ; sp -> initmsg . sinit_num_ostreams = sctp_max_outstreams ; sp -> initmsg . sinit_max_instreams = sctp_max_instreams ; sp -> initmsg . sinit_max_attempts = net -> sctp . max_retrans_init ; sp -> initmsg . sinit_max_init_timeo = net -> sctp . rto_max ; sp -> rtoinfo . srto_initial = net -> sctp . rto_initial ; sp -> rtoinfo . srto_max = net -> sctp . rto_max ; sp -> rtoinfo . srto_min = net -> sctp . rto_min ; sp -> assocparams . sasoc_asocmaxrxt = net -> sctp . max_retrans_association ; sp -> assocparams . sasoc_number_peer_destinations = 0 ; sp -> assocparams . sasoc_peer_rwnd = 0 ; sp -> assocparams . sasoc_local_rwnd = 0 ; sp -> assocparams . sasoc_cookie_life = net -> sctp . valid_cookie_life ; memset ( & sp -> subscribe , 0 , sizeof ( struct sctp_event_subscribe ) ) ; sp -> hbinterval = net -> sctp . hb_interval ; sp -> pathmaxrxt = net -> sctp . max_retrans_path ; sp -> pathmtu = 0 ; sp -> sackdelay = net -> sctp . sack_timeout ; sp -> sackfreq = 2 ; sp -> param_flags = SPP_HB_ENABLE | SPP_PMTUD_ENABLE | SPP_SACKDELAY_ENABLE ; sp -> disable_fragments = 0 ; sp -> nodelay = 0 ; sp -> recvrcvinfo = 0 ; sp -> recvnxtinfo = 0 ; sp -> v4mapped = 1 ; sp -> autoclose = 0 ; sp -> user_frag = 0 ; sp -> adaptation_ind = 0 ; sp -> pf = sctp_get_pf_specific ( sk -> sk_family ) ; atomic_set ( & sp -> pd_mode , 0 ) ; skb_queue_head_init ( & sp -> pd_lobby ) ; sp -> frag_interleave = 0 ; sp -> ep = sctp_endpoint_new ( sk , GFP_KERNEL ) ; if ( ! sp -> ep ) return - ENOMEM ; sp -> hmac = NULL ; sk -> sk_destruct = sctp_destruct_sock ; SCTP_DBG_OBJCNT_INC ( sock ) ; local_bh_disable ( ) ; percpu_counter_inc ( & sctp_sockets_allocated ) ; sock_prot_inuse_add ( net , sk -> sk_prot , 1 ) ; if ( net -> sctp . default_auto_asconf ) { <S2SV_StartBug> list_add_tail ( & sp -> auto_asconf_list , <S2SV_EndBug> & net -> sctp . auto_asconf_splist ) ; <S2SV_StartBug> sp -> do_auto_asconf = 1 ; <S2SV_EndBug> <S2SV_StartBug> } else <S2SV_EndBug> <S2SV_StartBug> sp -> do_auto_asconf = 0 ; <S2SV_EndBug> local_bh_enable ( ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> default_auto_asconf ) { spin_lock ( & sock_net ( sk ) -> sctp . addr_wq_lock ) ; <S2SV_ModStart> do_auto_asconf = 1 ; spin_unlock ( & sock_net ( sk ) -> sctp . addr_wq_lock ) <S2SV_ModStart> ; } else { <S2SV_ModStart> = 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 void put_filp ( struct file * file ) { if ( atomic_long_dec_and_test ( & file -> f_count ) ) { security_file_free ( file ) ; <S2SV_StartBug> file_sb_list_del ( file ) ; <S2SV_EndBug> file_free ( file ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> file ) ; <S2SV_ModEnd> file_free ( file\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4817\n\n```\nCWE-000 static void on_read ( h2o_socket_t * sock , int status ) { h2o_http2_conn_t * conn = sock -> data ; if ( status != 0 ) { h2o_socket_read_stop ( conn -> sock ) ; close_connection ( conn ) ; return ; } update_idle_timeout ( conn ) ; <S2SV_StartBug> parse_input ( conn ) ; <S2SV_EndBug> if ( h2o_timeout_is_linked ( & conn -> _write . timeout_entry ) ) { h2o_timeout_unlink ( & conn -> _write . timeout_entry ) ; do_emit_writereq ( conn ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> conn ) ; if ( <S2SV_ModStart> ( conn ) != 0 ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13658\n\n```\nCWE-617 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; PixelPacket * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; size_t Unknown6 ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; quantum_info = ( QuantumInfo * ) NULL ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } clone_info = ( ImageInfo * ) NULL ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image2 = ReadMATImageV4 ( image_info , image , exception ) ; if ( image2 == NULL ) goto MATLAB_KO ; image = image2 ; goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) { <S2SV_StartBug> MATLAB_KO : <S2SV_EndBug> clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; if ( ( MagickSizeType ) ( MATLAB_HDR . ObjectSize + filepos ) > GetBlobSize ( image ) ) goto MATLAB_KO ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; clone_info = CloneImageInfo ( image_info ) ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = decompress_block ( image , & MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) continue ; MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; Unknown6 = ReadBlobXXXLong ( image2 ) ; ( void ) Unknown6 ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; default : ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( unsigned long ) ldblk * MATLAB_HDR . SizeY > MATLAB_HDR . ObjectSize ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { SetImageColorspace ( image , GRAYColorspace ) ; image -> type = GrayscaleType ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( ( double * ) BImgBuff , i , image , MinVal , MaxVal ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( ( float * ) BImgBuff , i , image , MinVal , MaxVal ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) unlink ( clone_info -> filename ) ; } } } } RelinquishMagickMemory ( BImgBuff ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; END_OF_READING : if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { MATLAB_KO : if ( clone_info != ( ImageInfo * ) NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16300\n\n```\nCWE-674 static void bgp_update_print ( netdissect_options * ndo , const u_char * dat , int length ) { struct bgp bgp ; const u_char * p ; int withdrawn_routes_len ; int len ; int i ; ND_TCHECK2 ( dat [ 0 ] , BGP_SIZE ) ; if ( length < BGP_SIZE ) goto trunc ; memcpy ( & bgp , dat , BGP_SIZE ) ; p = dat + BGP_SIZE ; length -= BGP_SIZE ; ND_TCHECK2 ( p [ 0 ] , 2 ) ; if ( length < 2 ) goto trunc ; withdrawn_routes_len = EXTRACT_16BITS ( p ) ; p += 2 ; length -= 2 ; if ( withdrawn_routes_len ) { ND_TCHECK2 ( p [ 0 ] , withdrawn_routes_len ) ; if ( length < withdrawn_routes_len ) goto trunc ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Withdrawn<S2SV_blank>routes:<S2SV_blank>%d<S2SV_blank>bytes\" , withdrawn_routes_len ) ) ; p += withdrawn_routes_len ; length -= withdrawn_routes_len ; } ND_TCHECK2 ( p [ 0 ] , 2 ) ; if ( length < 2 ) goto trunc ; len = EXTRACT_16BITS ( p ) ; p += 2 ; length -= 2 ; if ( withdrawn_routes_len == 0 && len == 0 && length == 0 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>End-of-Rib<S2SV_blank>Marker<S2SV_blank>(empty<S2SV_blank>NLRI)\" ) ) ; return ; } if ( len ) { while ( len ) { int aflags , atype , alenlen , alen ; ND_TCHECK2 ( p [ 0 ] , 2 ) ; if ( len < 2 ) goto trunc ; if ( length < 2 ) goto trunc ; aflags = * p ; atype = * ( p + 1 ) ; p += 2 ; len -= 2 ; length -= 2 ; alenlen = bgp_attr_lenlen ( aflags , p ) ; ND_TCHECK2 ( p [ 0 ] , alenlen ) ; if ( len < alenlen ) goto trunc ; if ( length < alenlen ) goto trunc ; alen = bgp_attr_len ( aflags , p ) ; p += alenlen ; len -= alenlen ; length -= alenlen ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_attr_values , \"Unknown<S2SV_blank>Attribute\" , atype ) , atype , alen ) ) ; if ( aflags ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s%s%s%s\" , aflags & 0x80 ? \"O\" : \"\" , aflags & 0x40 ? \"T\" : \"\" , aflags & 0x20 ? \"P\" : \"\" , aflags & 0x10 ? \"E\" : \"\" ) ) ; if ( aflags & 0xf ) ND_PRINT ( ( ndo , \"+%x\" , aflags & 0xf ) ) ; ND_PRINT ( ( ndo , \"]:<S2SV_blank>\" ) ) ; } if ( len < alen ) goto trunc ; if ( length < alen ) goto trunc ; <S2SV_StartBug> if ( ! bgp_attr_print ( ndo , atype , p , alen ) ) <S2SV_EndBug> goto trunc ; p += alen ; len -= alen ; length -= alen ; } } if ( length ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Updated<S2SV_blank>routes:\" ) ) ; while ( length ) { char buf [ MAXHOSTNAMELEN + 100 ] ; i = decode_prefix4 ( ndo , p , length , buf , sizeof ( buf ) ) ; if ( i == - 1 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; break ; } else if ( i == - 2 ) goto trunc ; else if ( i == - 3 ) goto trunc ; else { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; p += i ; length -= i ; } } } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p , alen , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static void ext2_put_super ( struct super_block * sb ) { int db_count ; int i ; struct ext2_sb_info * sbi = EXT2_SB ( sb ) ; dquot_disable ( sb , - 1 , DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED ) ; <S2SV_StartBug> ext2_xattr_put_super ( sb ) ; <S2SV_EndBug> if ( ! ( sb -> s_flags & MS_RDONLY ) ) { struct ext2_super_block * es = sbi -> s_es ; spin_lock ( & sbi -> s_lock ) ; es -> s_state = cpu_to_le16 ( sbi -> s_mount_state ) ; spin_unlock ( & sbi -> s_lock ) ; ext2_sync_super ( sb , es , 1 ) ; } db_count = sbi -> s_gdb_count ; for ( i = 0 ; i < db_count ; i ++ ) if ( sbi -> s_group_desc [ i ] ) brelse ( sbi -> s_group_desc [ i ] ) ; kfree ( sbi -> s_group_desc ) ; kfree ( sbi -> s_debts ) ; percpu_counter_destroy ( & sbi -> s_freeblocks_counter ) ; percpu_counter_destroy ( & sbi -> s_freeinodes_counter ) ; percpu_counter_destroy ( & sbi -> s_dirs_counter ) ; brelse ( sbi -> s_sbh ) ; sb -> s_fs_info = NULL ; kfree ( sbi -> s_blockgroup_lock ) ; kfree ( sbi ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> DQUOT_LIMITS_ENABLED ) ; if ( sbi -> s_mb_cache ) { ext2_xattr_destroy_cache ( sbi -> s_mb_cache ) ; sbi -> s_mb_cache = NULL ; } <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_CreateString ( const char * string ) { cJSON * item = cJSON_New_Item ( ) ; if ( item ) { item -> type = cJSON_String ; item -> valuestring = cJSON_strdup ( string ) ; <S2SV_StartBug> } <S2SV_EndBug> return item ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> string ) ; if ( ! item -> valuestring ) { cJSON_Delete ( item ) ; return 0 ; } } <S2SV_ModEnd> return item ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15274\n\n```\nCWE-476 long keyctl_update_key ( key_serial_t id , const void __user * _payload , size_t plen ) { key_ref_t key_ref ; void * payload ; long ret ; ret = - EINVAL ; if ( plen > PAGE_SIZE ) goto error ; payload = NULL ; <S2SV_StartBug> if ( _payload ) { <S2SV_EndBug> ret = - ENOMEM ; payload = kmalloc ( plen , GFP_KERNEL ) ; if ( ! payload ) goto error ; ret = - EFAULT ; if ( copy_from_user ( payload , _payload , plen ) != 0 ) goto error2 ; } key_ref = lookup_user_key ( id , 0 , KEY_NEED_WRITE ) ; if ( IS_ERR ( key_ref ) ) { ret = PTR_ERR ( key_ref ) ; goto error2 ; } ret = key_update ( key_ref , payload , plen ) ; key_ref_put ( key_ref ) ; error2 : kfree ( payload ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( plen <S2SV_ModEnd> ) { ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_set_speed_features ( VP8_COMP * cpi ) { SPEED_FEATURES * sf = & cpi -> sf ; int Mode = cpi -> compressor_speed ; int Speed = cpi -> Speed ; int i ; VP8_COMMON * cm = & cpi -> common ; int last_improved_quant = sf -> improved_quant ; int ref_frames ; for ( i = 0 ; i < MAX_MODES ; i ++ ) { cpi -> mode_check_freq [ i ] = 0 ; } cpi -> mb . mbs_tested_so_far = 0 ; <S2SV_StartBug> sf -> RD = 1 ; <S2SV_EndBug> sf -> search_method = NSTEP ; sf -> improved_quant = 1 ; sf -> improved_dct = 1 ; sf -> auto_filter = 1 ; sf -> recode_loop = 1 ; sf -> quarter_pixel_search = 1 ; sf -> half_pixel_search = 1 ; sf -> iterative_sub_pixel = 1 ; sf -> optimize_coefficients = 1 ; sf -> use_fastquant_for_pick = 0 ; sf -> no_skip_block4x4_search = 1 ; sf -> first_step = 0 ; sf -> max_step_search_steps = MAX_MVSEARCH_STEPS ; sf -> improved_mv_pred = 1 ; for ( i = 0 ; i < MAX_MODES ; i ++ ) sf -> thresh_mult [ i ] = 0 ; ref_frames = 1 ; if ( cpi -> ref_frame_flags & VP8_LAST_FRAME ) ref_frames ++ ; if ( cpi -> ref_frame_flags & VP8_GOLD_FRAME ) ref_frames ++ ; if ( cpi -> ref_frame_flags & VP8_ALTR_FRAME ) ref_frames ++ ; if ( Mode == 0 ) Speed = 0 ; else if ( Mode == 2 ) Speed = RT ( Speed ) ; else { if ( Speed > 5 ) Speed = 5 ; Speed = GOOD ( Speed ) ; } sf -> thresh_mult [ THR_ZERO1 ] = sf -> thresh_mult [ THR_NEAREST1 ] = sf -> thresh_mult [ THR_NEAR1 ] = sf -> thresh_mult [ THR_DC ] = 0 ; sf -> thresh_mult [ THR_ZERO2 ] = sf -> thresh_mult [ THR_ZERO3 ] = sf -> thresh_mult [ THR_NEAREST2 ] = sf -> thresh_mult [ THR_NEAREST3 ] = sf -> thresh_mult [ THR_NEAR2 ] = sf -> thresh_mult [ THR_NEAR3 ] = speed_map ( Speed , thresh_mult_map_znn ) ; sf -> thresh_mult [ THR_V_PRED ] = sf -> thresh_mult [ THR_H_PRED ] = speed_map ( Speed , thresh_mult_map_vhpred ) ; sf -> thresh_mult [ THR_B_PRED ] = speed_map ( Speed , thresh_mult_map_bpred ) ; sf -> thresh_mult [ THR_TM ] = speed_map ( Speed , thresh_mult_map_tm ) ; sf -> thresh_mult [ THR_NEW1 ] = speed_map ( Speed , thresh_mult_map_new1 ) ; sf -> thresh_mult [ THR_NEW2 ] = sf -> thresh_mult [ THR_NEW3 ] = speed_map ( Speed , thresh_mult_map_new2 ) ; sf -> thresh_mult [ THR_SPLIT1 ] = speed_map ( Speed , thresh_mult_map_split1 ) ; sf -> thresh_mult [ THR_SPLIT2 ] = <S2SV_StartBug> sf -> thresh_mult [ THR_SPLIT3 ] = speed_map ( Speed , thresh_mult_map_split2 ) ; <S2SV_EndBug> cpi -> mode_check_freq [ THR_ZERO1 ] = cpi -> mode_check_freq [ THR_NEAREST1 ] = cpi -> mode_check_freq [ THR_NEAR1 ] = cpi -> mode_check_freq [ THR_TM ] = cpi -> mode_check_freq [ THR_DC ] = 0 ; cpi -> mode_check_freq [ THR_ZERO2 ] = cpi -> mode_check_freq [ THR_ZERO3 ] = cpi -> mode_check_freq [ THR_NEAREST2 ] = cpi -> mode_check_freq [ THR_NEAREST3 ] = speed_map ( Speed , mode_check_freq_map_zn2 ) ; cpi -> mode_check_freq [ THR_NEAR2 ] = cpi -> mode_check_freq [ THR_NEAR3 ] = speed_map ( Speed , mode_check_freq_map_near2 ) ; cpi -> mode_check_freq [ THR_V_PRED ] = cpi -> mode_check_freq [ THR_H_PRED ] = cpi -> mode_check_freq [ THR_B_PRED ] = speed_map ( Speed , mode_check_freq_map_vhbpred ) ; cpi -> mode_check_freq [ THR_NEW1 ] = speed_map ( Speed , mode_check_freq_map_new1 ) ; cpi -> mode_check_freq [ THR_NEW2 ] = cpi -> mode_check_freq [ THR_NEW3 ] = speed_map ( Speed , mode_check_freq_map_new2 ) ; cpi -> mode_check_freq [ THR_SPLIT1 ] = speed_map ( Speed , mode_check_freq_map_split1 ) ; cpi -> mode_check_freq [ THR_SPLIT2 ] = cpi -> mode_check_freq [ THR_SPLIT3 ] = speed_map ( Speed , mode_check_freq_map_split2 ) ; Speed = cpi -> Speed ; switch ( Mode ) { # if ! ( CONFIG_REALTIME_ONLY ) case 0 : sf -> first_step = 0 ; sf -> max_step_search_steps = MAX_MVSEARCH_STEPS ; break ; case 1 : case 3 : if ( Speed > 0 ) { sf -> optimize_coefficients = 0 ; sf -> use_fastquant_for_pick = 1 ; sf -> no_skip_block4x4_search = 0 ; sf -> first_step = 1 ; } if ( Speed > 2 ) { sf -> improved_quant = 0 ; sf -> improved_dct = 0 ; sf -> recode_loop = 2 ; } if ( Speed > 3 ) { sf -> auto_filter = 1 ; sf -> recode_loop = 0 ; sf -> RD = 0 ; } if ( Speed > 4 ) { sf -> auto_filter = 0 ; } break ; # endif case 2 : sf -> optimize_coefficients = 0 ; sf -> recode_loop = 0 ; sf -> auto_filter = 1 ; sf -> iterative_sub_pixel = 1 ; sf -> search_method = NSTEP ; if ( Speed > 0 ) { sf -> improved_quant = 0 ; sf -> improved_dct = 0 ; sf -> use_fastquant_for_pick = 1 ; sf -> no_skip_block4x4_search = 0 ; sf -> first_step = 1 ; } if ( Speed > 2 ) sf -> auto_filter = 0 ; if ( Speed > 3 ) { sf -> RD = 0 ; sf -> auto_filter = 1 ; } if ( Speed > 4 ) { sf -> auto_filter = 0 ; sf -> search_method = HEX ; sf -> iterative_sub_pixel = 0 ; } if ( Speed > 6 ) { unsigned int sum = 0 ; unsigned int total_mbs = cm -> MBs ; int thresh ; unsigned int total_skip ; int min = 2000 ; if ( cpi -> oxcf . encode_breakout > 2000 ) min = cpi -> oxcf . encode_breakout ; min >>= 7 ; for ( i = 0 ; i < min ; i ++ ) { sum += cpi -> mb . error_bins [ i ] ; } total_skip = sum ; sum = 0 ; for ( ; i < 1024 ; i ++ ) { sum += cpi -> mb . error_bins [ i ] ; if ( 10 * sum >= ( unsigned int ) ( cpi -> Speed - 6 ) * ( total_mbs - total_skip ) ) break ; } i -- ; thresh = ( i << 7 ) ; if ( thresh < 2000 ) thresh = 2000 ; if ( ref_frames > 1 ) { sf -> thresh_mult [ THR_NEW1 ] = thresh ; sf -> thresh_mult [ THR_NEAREST1 ] = thresh >> 1 ; sf -> thresh_mult [ THR_NEAR1 ] = thresh >> 1 ; } if ( ref_frames > 2 ) { sf -> thresh_mult [ THR_NEW2 ] = thresh << 1 ; sf -> thresh_mult [ THR_NEAREST2 ] = thresh ; sf -> thresh_mult [ THR_NEAR2 ] = thresh ; } if ( ref_frames > 3 ) { sf -> thresh_mult [ THR_NEW3 ] = thresh << 1 ; sf -> thresh_mult [ THR_NEAREST3 ] = thresh ; sf -> thresh_mult [ THR_NEAR3 ] = thresh ; } sf -> improved_mv_pred = 0 ; } if ( Speed > 8 ) sf -> quarter_pixel_search = 0 ; if ( cm -> version == 0 ) { cm -> filter_type = NORMAL_LOOPFILTER ; if ( Speed >= 14 ) cm -> filter_type = SIMPLE_LOOPFILTER ; } else { cm -> filter_type = SIMPLE_LOOPFILTER ; } if ( Speed >= 15 ) sf -> half_pixel_search = 0 ; <S2SV_StartBug> vpx_memset ( cpi -> mb . error_bins , 0 , sizeof ( cpi -> mb . error_bins ) ) ; <S2SV_EndBug> } ; if ( cpi -> pass == 1 ) { sf -> improved_quant = 0 ; sf -> optimize_coefficients = 0 ; sf -> improved_dct = 0 ; } if ( cpi -> sf . search_method == NSTEP ) { vp8_init3smotion_compensation ( & cpi -> mb , cm -> yv12_fb [ cm -> lst_fb_idx ] . y_stride ) ; } else if ( cpi -> sf . search_method == DIAMOND ) { vp8_init_dsmotion_compensation ( & cpi -> mb , cm -> yv12_fb [ cm -> lst_fb_idx ] . y_stride ) ; } if ( cpi -> sf . improved_dct ) { cpi -> mb . short_fdct8x4 = vp8_short_fdct8x4 ; cpi -> mb . short_fdct4x4 = vp8_short_fdct4x4 ; } else { cpi -> mb . short_fdct8x4 = vp8_short_fdct8x4 ; cpi -> mb . short_fdct4x4 = vp8_short_fdct4x4 ; } cpi -> mb . short_walsh4x4 = vp8_short_walsh4x4 ; if ( cpi -> sf . improved_quant ) { cpi -> mb . quantize_b = vp8_regular_quantize_b ; <S2SV_StartBug> cpi -> mb . quantize_b_pair = vp8_regular_quantize_b_pair ; <S2SV_EndBug> } else { <S2SV_StartBug> cpi -> mb . quantize_b = vp8_fast_quantize_b ; <S2SV_EndBug> cpi -> mb . quantize_b_pair = vp8_fast_quantize_b_pair ; } if ( cpi -> sf . improved_quant != last_improved_quant ) vp8cx_init_quantizer ( cpi ) ; if ( cpi -> sf . iterative_sub_pixel == 1 ) { cpi -> find_fractional_mv_step = vp8_find_best_sub_pixel_step_iteratively ; } else if ( cpi -> sf . quarter_pixel_search ) { cpi -> find_fractional_mv_step = vp8_find_best_sub_pixel_step ; } else if ( cpi -> sf . half_pixel_search ) { cpi -> find_fractional_mv_step = vp8_find_best_half_pixel_step ; } else { cpi -> find_fractional_mv_step = vp8_skip_fractional_mv_step ; } if ( cpi -> sf . optimize_coefficients == 1 && cpi -> pass != 1 ) cpi -> mb . optimize = 1 ; else cpi -> mb . optimize = 0 ; if ( cpi -> common . full_pixel ) cpi -> find_fractional_mv_step = vp8_skip_fractional_mv_step ; # ifdef SPEEDSTATS frames_at_speed [ cpi -> Speed ] ++ ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; cpi -> mb . mbs_zero_last_dot_suppress = 0 ; <S2SV_ModStart> thresh_mult_map_split2 ) ; if ( ( cpi -> Speed <= 6 ) && ( cpi -> oxcf . number_of_layers > 1 ) && ( cpi -> ref_frame_flags & VP8_LAST_FRAME ) && ( cpi -> ref_frame_flags & VP8_GOLD_FRAME ) ) { if ( cpi -> closest_reference_frame == GOLDEN_FRAME ) { sf -> thresh_mult [ THR_ZERO2 ] = sf -> thresh_mult [ THR_ZERO2 ] >> 3 ; sf -> thresh_mult [ THR_NEAREST2 ] = sf -> thresh_mult [ THR_NEAREST2 ] >> 3 ; sf -> thresh_mult [ THR_NEAR2 ] = sf -> thresh_mult [ THR_NEAR2 ] >> 3 ; } else { sf -> thresh_mult [ THR_ZERO2 ] = sf -> thresh_mult [ THR_ZERO2 ] >> 1 ; sf -> thresh_mult [ THR_NEAREST2 ] = sf -> thresh_mult [ THR_NEAREST2 ] >> 1 ; sf -> thresh_mult [ THR_NEAR2 ] = sf -> thresh_mult [ THR_NEAR2 ] >> 1 ; } } <S2SV_ModStart> = 0 ; memset <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> = vp8_regular_quantize_b ; } else { <S2SV_ModStart> -> mb . <S2SV_ModEnd> quantize_b = vp8_fast_quantize_b <S2SV_ModStart> quantize_b = vp8_fast_quantize_b <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3745\n\n```\nCWE-119 int effect_command ( effect_handle_t self , uint32_t cmdCode , uint32_t cmdSize , void * pCmdData , uint32_t * replySize , void * pReplyData ) { effect_context_t * context = ( effect_context_t * ) self ; int retsize ; int status = 0 ; pthread_mutex_lock ( & lock ) ; if ( ! effect_exists ( context ) ) { status = - ENOSYS ; goto exit ; } if ( context == NULL || context -> state == EFFECT_STATE_UNINITIALIZED ) { status = - ENOSYS ; goto exit ; } switch ( cmdCode ) { case EFFECT_CMD_INIT : if ( pReplyData == NULL || * replySize != sizeof ( int ) ) { status = - EINVAL ; goto exit ; } if ( context -> ops . init ) * ( int * ) pReplyData = context -> ops . init ( context ) ; else * ( int * ) pReplyData = 0 ; break ; case EFFECT_CMD_SET_CONFIG : if ( pCmdData == NULL || cmdSize != sizeof ( effect_config_t ) || pReplyData == NULL || * replySize != sizeof ( int ) ) { status = - EINVAL ; goto exit ; } * ( int * ) pReplyData = set_config ( context , ( effect_config_t * ) pCmdData ) ; break ; case EFFECT_CMD_GET_CONFIG : if ( pReplyData == NULL || * replySize != sizeof ( effect_config_t ) ) { status = - EINVAL ; goto exit ; } if ( ! context -> offload_enabled ) { status = - EINVAL ; goto exit ; } get_config ( context , ( effect_config_t * ) pReplyData ) ; break ; case EFFECT_CMD_RESET : if ( context -> ops . reset ) context -> ops . reset ( context ) ; break ; case EFFECT_CMD_ENABLE : if ( pReplyData == NULL || * replySize != sizeof ( int ) ) { status = - EINVAL ; goto exit ; } if ( context -> state != EFFECT_STATE_INITIALIZED ) { status = - ENOSYS ; goto exit ; } context -> state = EFFECT_STATE_ACTIVE ; if ( context -> ops . enable ) context -> ops . enable ( context ) ; ALOGV ( \"%s<S2SV_blank>EFFECT_CMD_ENABLE\" , __func__ ) ; * ( int * ) pReplyData = 0 ; break ; case EFFECT_CMD_DISABLE : if ( pReplyData == NULL || * replySize != sizeof ( int ) ) { status = - EINVAL ; goto exit ; } if ( context -> state != EFFECT_STATE_ACTIVE ) { status = - ENOSYS ; goto exit ; } context -> state = EFFECT_STATE_INITIALIZED ; if ( context -> ops . disable ) context -> ops . disable ( context ) ; ALOGV ( \"%s<S2SV_blank>EFFECT_CMD_DISABLE\" , __func__ ) ; * ( int * ) pReplyData = 0 ; break ; case EFFECT_CMD_GET_PARAM : { if ( pCmdData == NULL || cmdSize < ( int ) ( sizeof ( effect_param_t ) + sizeof ( uint32_t ) ) || pReplyData == NULL || * replySize < ( int ) ( sizeof ( effect_param_t ) + sizeof ( uint32_t ) + <S2SV_StartBug> sizeof ( uint16_t ) ) ) { <S2SV_EndBug> status = - EINVAL ; ALOGV ( \"EFFECT_CMD_GET_PARAM<S2SV_blank>invalid<S2SV_blank>command<S2SV_blank>cmdSize<S2SV_blank>%d<S2SV_blank>*replySize<S2SV_blank>%d\" , cmdSize , * replySize ) ; goto exit ; } if ( ! context -> offload_enabled ) { status = - EINVAL ; goto exit ; } effect_param_t * q = ( effect_param_t * ) pCmdData ; memcpy ( pReplyData , pCmdData , sizeof ( effect_param_t ) + q -> psize ) ; effect_param_t * p = ( effect_param_t * ) pReplyData ; if ( context -> ops . get_parameter ) context -> ops . get_parameter ( context , p , replySize ) ; } break ; case EFFECT_CMD_SET_PARAM : { if ( pCmdData == NULL || cmdSize < ( int ) ( sizeof ( effect_param_t ) + sizeof ( uint32_t ) + sizeof ( uint16_t ) ) || pReplyData == NULL || * replySize != sizeof ( int32_t ) ) { status = - EINVAL ; ALOGV ( \"EFFECT_CMD_SET_PARAM<S2SV_blank>invalid<S2SV_blank>command<S2SV_blank>cmdSize<S2SV_blank>%d<S2SV_blank>*replySize<S2SV_blank>%d\" , cmdSize , * replySize ) ; goto exit ; } * ( int32_t * ) pReplyData = 0 ; effect_param_t * p = ( effect_param_t * ) pCmdData ; if ( context -> ops . set_parameter ) * ( int32_t * ) pReplyData = context -> ops . set_parameter ( context , p , * replySize ) ; } break ; case EFFECT_CMD_SET_DEVICE : { uint32_t device ; ALOGV ( \"\\\\t<S2SV_blank>EFFECT_CMD_SET_DEVICE<S2SV_blank>start\" ) ; if ( pCmdData == NULL || cmdSize < sizeof ( uint32_t ) ) { status = - EINVAL ; ALOGV ( \"EFFECT_CMD_SET_DEVICE<S2SV_blank>invalid<S2SV_blank>command<S2SV_blank>cmdSize<S2SV_blank>%d\" , cmdSize ) ; goto exit ; } device = * ( uint32_t * ) pCmdData ; if ( context -> ops . set_device ) context -> ops . set_device ( context , device ) ; } break ; case EFFECT_CMD_SET_VOLUME : case EFFECT_CMD_SET_AUDIO_MODE : break ; case EFFECT_CMD_OFFLOAD : { output_context_t * out_ctxt ; if ( cmdSize != sizeof ( effect_offload_param_t ) || pCmdData == NULL || pReplyData == NULL || * replySize != sizeof ( int ) ) { ALOGV ( \"%s<S2SV_blank>EFFECT_CMD_OFFLOAD<S2SV_blank>bad<S2SV_blank>format\" , __func__ ) ; status = - EINVAL ; break ; } effect_offload_param_t * offload_param = ( effect_offload_param_t * ) pCmdData ; ALOGV ( \"%s<S2SV_blank>EFFECT_CMD_OFFLOAD<S2SV_blank>offload<S2SV_blank>%d<S2SV_blank>output<S2SV_blank>%d\" , __func__ , offload_param -> isOffload , offload_param -> ioHandle ) ; * ( int * ) pReplyData = 0 ; context -> offload_enabled = offload_param -> isOffload ; if ( context -> out_handle == offload_param -> ioHandle ) break ; out_ctxt = get_output ( context -> out_handle ) ; if ( out_ctxt != NULL ) remove_effect_from_output ( out_ctxt , context ) ; context -> out_handle = offload_param -> ioHandle ; out_ctxt = get_output ( context -> out_handle ) ; if ( out_ctxt != NULL ) add_effect_to_output ( out_ctxt , context ) ; } break ; default : if ( cmdCode >= EFFECT_CMD_FIRST_PROPRIETARY && context -> ops . command ) status = context -> ops . command ( context , cmdCode , cmdSize , pCmdData , replySize , pReplyData ) ; else { ALOGW ( \"%s<S2SV_blank>invalid<S2SV_blank>command<S2SV_blank>%d\" , __func__ , cmdCode ) ; status = - EINVAL ; } break ; } exit : pthread_mutex_unlock ( & lock ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( uint16_t ) ) || ( ( effect_param_t * ) pCmdData ) -> psize > * replySize - sizeof ( effect_param_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 int jas_stream_read ( jas_stream_t * stream , void * buf , int cnt ) { int n ; int c ; <S2SV_StartBug> char * bufptr ; <S2SV_EndBug> bufptr = buf ; n = 0 ; while ( n < cnt ) { if ( ( c = jas_stream_getc ( stream ) ) == EOF ) { return n ; } * bufptr ++ = c ; ++ n ; } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * bufptr ; if ( cnt < 0 ) { jas_deprecated ( \"negative<S2SV_blank>count<S2SV_blank>for<S2SV_blank>jas_stream_read\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20458\n\n```\nCWE-125 struct r_bin_dyldcache_obj_t * r_bin_dyldcache_from_bytes_new ( const ut8 * buf , ut64 size ) { <S2SV_StartBug> struct r_bin_dyldcache_obj_t * bin ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( bin = malloc ( sizeof ( struct r_bin_dyldcache_obj_t ) ) ) ) { <S2SV_EndBug> return NULL ; } <S2SV_StartBug> memset ( bin , 0 , sizeof ( struct r_bin_dyldcache_obj_t ) ) ; <S2SV_EndBug> if ( ! buf ) { return r_bin_dyldcache_free ( bin ) ; } bin -> b = r_buf_new ( ) ; <S2SV_StartBug> if ( ! r_buf_set_bytes ( bin -> b , buf , size ) ) { <S2SV_EndBug> return r_bin_dyldcache_free ( bin ) ; } if ( ! r_bin_dyldcache_init ( bin ) ) { return r_bin_dyldcache_free ( bin ) ; } bin -> size = size ; return bin ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> r_bin_dyldcache_obj_t * bin = R_NEW0 ( struct r_bin_dyldcache_obj_t ) <S2SV_ModStart> if ( ! bin <S2SV_ModEnd> ) { return <S2SV_ModStart> NULL ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> ; if ( ! bin -> b ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7472\n\n```\nCWE-404 int install_process_keyring_to_cred ( struct cred * new ) { struct key * keyring ; if ( new -> process_keyring ) <S2SV_StartBug> return - EEXIST ; <S2SV_EndBug> keyring = keyring_alloc ( \"_pid\" , new -> uid , new -> gid , new , KEY_POS_ALL | KEY_USR_VIEW , KEY_ALLOC_QUOTA_OVERRUN , NULL , NULL ) ; if ( IS_ERR ( keyring ) ) return PTR_ERR ( keyring ) ; new -> process_keyring = keyring ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> process_keyring ) return 0 <S2SV_ModEnd> ; keyring =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 vpx_image_t * vpx_codec_get_frame ( vpx_codec_ctx_t * ctx , vpx_codec_iter_t * iter ) { vpx_image_t * img ; if ( ! ctx || ! iter || ! ctx -> iface || ! ctx -> priv ) img = NULL ; else <S2SV_StartBug> img = ctx -> iface -> dec . get_frame ( ctx -> priv -> alg_priv , iter ) ; <S2SV_EndBug> return img ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . get_frame ( get_alg_priv ( ctx ) <S2SV_ModEnd> , iter )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10165\n\n```\nCWE-125 static void * Type_MLU_Read ( struct _cms_typehandler_struct * self , cmsIOHANDLER * io , cmsUInt32Number * nItems , cmsUInt32Number SizeOfTag ) { cmsMLU * mlu ; cmsUInt32Number Count , RecLen , NumOfWchar ; cmsUInt32Number SizeOfHeader ; cmsUInt32Number Len , Offset ; cmsUInt32Number i ; wchar_t * Block ; cmsUInt32Number BeginOfThisString , EndOfThisString , LargestPosition ; * nItems = 0 ; if ( ! _cmsReadUInt32Number ( io , & Count ) ) return NULL ; if ( ! _cmsReadUInt32Number ( io , & RecLen ) ) return NULL ; if ( RecLen != 12 ) { cmsSignalError ( self -> ContextID , cmsERROR_UNKNOWN_EXTENSION , \"multiLocalizedUnicodeType<S2SV_blank>of<S2SV_blank>len<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported.\" ) ; return NULL ; } mlu = cmsMLUalloc ( self -> ContextID , Count ) ; if ( mlu == NULL ) return NULL ; mlu -> UsedEntries = Count ; SizeOfHeader = 12 * Count + sizeof ( _cmsTagBase ) ; LargestPosition = 0 ; for ( i = 0 ; i < Count ; i ++ ) { if ( ! _cmsReadUInt16Number ( io , & mlu -> Entries [ i ] . Language ) ) goto Error ; if ( ! _cmsReadUInt16Number ( io , & mlu -> Entries [ i ] . Country ) ) goto Error ; if ( ! _cmsReadUInt32Number ( io , & Len ) ) goto Error ; if ( ! _cmsReadUInt32Number ( io , & Offset ) ) goto Error ; <S2SV_StartBug> if ( Offset < ( SizeOfHeader + 8 ) ) goto Error ; <S2SV_EndBug> BeginOfThisString = Offset - SizeOfHeader - 8 ; mlu -> Entries [ i ] . Len = ( Len * sizeof ( wchar_t ) ) / sizeof ( cmsUInt16Number ) ; mlu -> Entries [ i ] . StrW = ( BeginOfThisString * sizeof ( wchar_t ) ) / sizeof ( cmsUInt16Number ) ; EndOfThisString = BeginOfThisString + Len ; if ( EndOfThisString > LargestPosition ) LargestPosition = EndOfThisString ; } SizeOfTag = ( LargestPosition * sizeof ( wchar_t ) ) / sizeof ( cmsUInt16Number ) ; if ( SizeOfTag == 0 ) { Block = NULL ; NumOfWchar = 0 ; } else { Block = ( wchar_t * ) _cmsMalloc ( self -> ContextID , SizeOfTag ) ; if ( Block == NULL ) goto Error ; NumOfWchar = SizeOfTag / sizeof ( wchar_t ) ; if ( ! _cmsReadWCharArray ( io , NumOfWchar , Block ) ) goto Error ; } mlu -> MemPool = Block ; mlu -> PoolSize = SizeOfTag ; mlu -> PoolUsed = SizeOfTag ; * nItems = 1 ; return ( void * ) mlu ; Error : if ( mlu ) cmsMLUfree ( mlu ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 8 ) ) goto Error ; if ( ( Offset + Len ) > SizeOfTag + 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-200 void __ip_select_ident ( struct net * net , struct iphdr * iph , int segs ) { <S2SV_StartBug> static u32 ip_idents_hashrnd __read_mostly ; <S2SV_EndBug> u32 hash , id ; <S2SV_StartBug> net_get_random_once ( & ip_idents_hashrnd , sizeof ( ip_idents_hashrnd ) ) ; <S2SV_EndBug> <S2SV_StartBug> hash = jhash_3words ( ( __force u32 ) iph -> daddr , <S2SV_EndBug> ( __force u32 ) iph -> saddr , <S2SV_StartBug> iph -> protocol ^ net_hash_mix ( net ) , <S2SV_EndBug> ip_idents_hashrnd ) ; id = ip_idents_reserve ( hash , segs ) ; iph -> id = htons ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> segs ) { <S2SV_ModEnd> u32 hash , <S2SV_ModStart> , id ; if ( unlikely ( siphash_key_is_zero ( & net -> ipv4 . ip_id_key ) ) ) get_random_bytes ( & net -> ipv4 . ip_id_key <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> , sizeof ( net -> ipv4 . ip_id_key <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ; hash = siphash_3u32 <S2SV_ModEnd> ( ( __force <S2SV_ModStart> iph -> protocol , & net -> ipv4 . ip_id_key <S2SV_ModEnd> ) ; id\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8071\n\n```\nCWE-404 static int cp2112_gpio_direction_output ( struct gpio_chip * chip , unsigned offset , int value ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> int ret ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_GET_REPORT ) ; if ( ret != CP2112_GPIO_CONFIG_LENGTH ) { hid_err ( hdev , \"error<S2SV_blank>requesting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto fail ; } buf [ 1 ] |= 1 << offset ; buf [ 2 ] = gpio_push_pull ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_SET_REPORT ) ; if ( ret < 0 ) { hid_err ( hdev , \"error<S2SV_blank>setting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto fail ; } <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> cp2112_gpio_set ( chip , offset , value ) ; return 0 ; fail : <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> return ret < 0 ? ret : - EIO ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> in_out_buffer ; <S2SV_ModEnd> int ret ; <S2SV_ModStart> int ret ; mutex_lock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; ret <S2SV_ModStart> fail ; } mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; cp2112_gpio_set <S2SV_ModStart> ; fail : mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 static void timer_enter_running ( Timer * t ) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL ; int r ; assert ( t ) ; if ( unit_stop_pending ( UNIT ( t ) ) ) return ; r = manager_add_job ( UNIT ( t ) -> manager , JOB_START , UNIT_TRIGGER ( UNIT ( t ) ) , JOB_REPLACE , true , & error , NULL ) ; if ( r < 0 ) goto fail ; dual_timestamp_get ( & t -> last_trigger ) ; if ( t -> stamp_path ) <S2SV_StartBug> touch_file ( t -> stamp_path , true , t -> last_trigger . realtime , UID_INVALID , GID_INVALID , 0 ) ; <S2SV_EndBug> timer_set_state ( t , TIMER_RUNNING ) ; return ; fail : log_unit_warning ( UNIT ( t ) , \"Failed<S2SV_blank>to<S2SV_blank>queue<S2SV_blank>unit<S2SV_blank>startup<S2SV_blank>job:<S2SV_blank>%s\" , bus_error_message ( & error , r ) ) ; timer_enter_dead ( t , TIMER_FAILURE_RESOURCES ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , GID_INVALID , MODE_INVALID <S2SV_ModEnd> ) ; timer_set_state\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 int sock_queue_err_skb ( struct sock * sk , struct sk_buff * skb ) { if ( atomic_read ( & sk -> sk_rmem_alloc ) + skb -> truesize >= ( unsigned int ) sk -> sk_rcvbuf ) return - ENOMEM ; skb_orphan ( skb ) ; skb -> sk = sk ; skb -> destructor = sock_rmem_free ; atomic_add ( skb -> truesize , & sk -> sk_rmem_alloc ) ; <S2SV_StartBug> skb_dst_force ( skb ) ; <S2SV_EndBug> skb_queue_tail ( & sk -> sk_error_queue , skb ) ; if ( ! sock_flag ( sk , SOCK_DEAD ) ) sk -> sk_data_ready ( sk ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk_rmem_alloc ) ; skb_set_err_queue ( skb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11595\n\n```\nCWE-119 void jshGetPinString ( char * result , Pin pin ) { result [ 0 ] = 0 ; # ifdef PIN_NAMES_DIRECT if ( jshIsPinValid ( pin ) ) { result [ 0 ] = ( char ) ( 'A' + ( pinInfo [ pin ] . port & JSH_PORT_MASK ) - JSH_PORTA ) ; itostr ( pinInfo [ pin ] . pin - JSH_PIN0 , & result [ 1 ] , 10 ) ; # else if ( false ) { # if JSH_PORTA_OFFSET != - 1 } else if ( # if JSH_PORTA_OFFSET != 0 pin >= JSH_PORTA_OFFSET && # endif pin < JSH_PORTA_OFFSET + JSH_PORTA_COUNT ) { result [ 0 ] = 'A' ; itostr ( pin - JSH_PORTA_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTB_OFFSET != - 1 } else if ( pin >= JSH_PORTB_OFFSET && pin < JSH_PORTB_OFFSET + JSH_PORTB_COUNT ) { result [ 0 ] = 'B' ; itostr ( pin - JSH_PORTB_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTC_OFFSET != - 1 } else if ( pin >= JSH_PORTC_OFFSET && pin < JSH_PORTC_OFFSET + JSH_PORTC_COUNT ) { result [ 0 ] = 'C' ; itostr ( pin - JSH_PORTC_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTD_OFFSET != - 1 } else if ( # if JSH_PORTD_OFFSET != 0 pin >= JSH_PORTD_OFFSET && # endif pin < JSH_PORTD_OFFSET + JSH_PORTD_COUNT ) { result [ 0 ] = 'D' ; itostr ( pin - JSH_PORTD_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTE_OFFSET != - 1 } else if ( pin >= JSH_PORTE_OFFSET && pin < JSH_PORTE_OFFSET + JSH_PORTE_COUNT ) { result [ 0 ] = 'E' ; itostr ( pin - JSH_PORTE_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTF_OFFSET != - 1 } else if ( pin >= JSH_PORTF_OFFSET && pin < JSH_PORTF_OFFSET + JSH_PORTF_COUNT ) { result [ 0 ] = 'F' ; itostr ( pin - JSH_PORTF_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTG_OFFSET != - 1 } else if ( pin >= JSH_PORTG_OFFSET && pin < JSH_PORTG_OFFSET + JSH_PORTG_COUNT ) { result [ 0 ] = 'G' ; itostr ( pin - JSH_PORTG_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTH_OFFSET != - 1 } else if ( pin >= JSH_PORTH_OFFSET && pin < JSH_PORTH_OFFSET + JSH_PORTH_COUNT ) { result [ 0 ] = 'H' ; itostr ( pin - JSH_PORTH_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTI_OFFSET != - 1 } else if ( pin >= JSH_PORTI_OFFSET && pin < JSH_PORTI_OFFSET + JSH_PORTI_COUNT ) { result [ 0 ] = 'I' ; itostr ( pin - JSH_PORTI_OFFSET , & result [ 1 ] , 10 ) ; # endif # if JSH_PORTV_OFFSET != - 1 } else if ( pin >= JSH_PORTV_OFFSET && pin < JSH_PORTV_OFFSET + JSH_PORTV_COUNT ) { result [ 0 ] = 'V' ; itostr ( pin - JSH_PORTV_OFFSET , & result [ 1 ] , 10 ) ; # endif # endif } else { <S2SV_StartBug> strncpy ( result , \"undefined\" , 10 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { strcpy <S2SV_ModEnd> ( result , <S2SV_ModStart> result , \"undefined\" <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8109\n\n```\nCWE-264 static const char * lua_authz_parse ( cmd_parms * cmd , const char * require_line , const void * * parsed_require_line ) { const char * provider_name ; <S2SV_StartBug> lua_authz_provider_spec * spec ; <S2SV_EndBug> apr_pool_userdata_get ( ( void * * ) & provider_name , AUTHZ_PROVIDER_NAME_NOTE , cmd -> temp_pool ) ; ap_assert ( provider_name != NULL ) ; spec = apr_hash_get ( lua_authz_providers , provider_name , APR_HASH_KEY_STRING ) ; ap_assert ( spec != NULL ) ; <S2SV_StartBug> if ( require_line && * require_line ) { <S2SV_EndBug> const char * arg ; <S2SV_StartBug> spec -> args = apr_array_make ( cmd -> pool , 2 , sizeof ( const char * ) ) ; <S2SV_EndBug> while ( ( arg = ap_getword_conf ( cmd -> pool , & require_line ) ) && * arg ) { <S2SV_StartBug> APR_ARRAY_PUSH ( spec -> args , const char * ) = arg ; <S2SV_EndBug> } } <S2SV_StartBug> * parsed_require_line = spec ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lua_authz_provider_spec * spec ; lua_authz_provider_func * func = apr_pcalloc ( cmd -> pool , sizeof ( lua_authz_provider_func ) ) <S2SV_ModStart> NULL ) ; func -> spec = spec ; <S2SV_ModStart> * arg ; func <S2SV_ModEnd> -> args = <S2SV_ModStart> { APR_ARRAY_PUSH ( func <S2SV_ModEnd> -> args , <S2SV_ModStart> * parsed_require_line = func <S2SV_ModEnd> ; return NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16842\n\n```\nCWE-125 static void voutf ( struct GlobalConfig * config , const char * prefix , const char * fmt , va_list ap ) { size_t width = ( 79 - strlen ( prefix ) ) ; if ( ! config -> mute ) { size_t len ; char * ptr ; char * print_buffer ; print_buffer = curlx_mvaprintf ( fmt , ap ) ; if ( ! print_buffer ) return ; len = strlen ( print_buffer ) ; ptr = print_buffer ; while ( len > 0 ) { fputs ( prefix , config -> errors ) ; if ( len > width ) { size_t cut = width - 1 ; while ( ! ISSPACE ( ptr [ cut ] ) && cut ) { cut -- ; } if ( 0 == cut ) cut = width - 1 ; ( void ) fwrite ( ptr , cut + 1 , 1 , config -> errors ) ; fputs ( \"\\\\n\" , config -> errors ) ; ptr += cut + 1 ; <S2SV_StartBug> len -= cut ; <S2SV_EndBug> } else { fputs ( ptr , config -> errors ) ; len = 0 ; } } curl_free ( print_buffer ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len -= cut + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12210\n\n```\nCWE-000 int pam_sm_authenticate ( pam_handle_t * pamh , int flags , int argc , const char * * argv ) { struct passwd * pw = NULL , pw_s ; const char * user = NULL ; cfg_t cfg_st ; cfg_t * cfg = & cfg_st ; char buffer [ BUFSIZE ] ; char * buf = NULL ; char * authfile_dir ; size_t authfile_dir_len ; int pgu_ret , gpn_ret ; int retval = PAM_IGNORE ; device_t * devices = NULL ; unsigned n_devices = 0 ; int openasuser ; int should_free_origin = 0 ; int should_free_appid = 0 ; int should_free_auth_file = 0 ; int should_free_authpending_file = 0 ; parse_cfg ( flags , argc , argv , cfg ) ; if ( ! cfg -> origin ) { strcpy ( buffer , DEFAULT_ORIGIN_PREFIX ) ; if ( gethostname ( buffer + strlen ( DEFAULT_ORIGIN_PREFIX ) , BUFSIZE - strlen ( DEFAULT_ORIGIN_PREFIX ) ) == - 1 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>host<S2SV_blank>name\" ) ; goto done ; } DBG ( \"Origin<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>using<S2SV_blank>\\\\\"%s\\\\\"\" , buffer ) ; cfg -> origin = strdup ( buffer ) ; if ( ! cfg -> origin ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto done ; } else { should_free_origin = 1 ; } } if ( ! cfg -> appid ) { DBG ( \"Appid<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>using<S2SV_blank>the<S2SV_blank>same<S2SV_blank>value<S2SV_blank>of<S2SV_blank>origin<S2SV_blank>(%s)\" , cfg -> origin ) ; cfg -> appid = strdup ( cfg -> origin ) ; if ( ! cfg -> appid ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) goto done ; } else { should_free_appid = 1 ; } } if ( cfg -> max_devs == 0 ) { DBG ( \"Maximum<S2SV_blank>devices<S2SV_blank>number<S2SV_blank>not<S2SV_blank>set.<S2SV_blank>Using<S2SV_blank>default<S2SV_blank>(%d)\" , MAX_DEVS ) ; cfg -> max_devs = MAX_DEVS ; } devices = malloc ( sizeof ( device_t ) * cfg -> max_devs ) ; if ( ! devices ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } pgu_ret = pam_get_user ( pamh , & user , NULL ) ; if ( pgu_ret != PAM_SUCCESS || user == NULL ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>access<S2SV_blank>user<S2SV_blank>%s\" , user ) ; retval = PAM_CONV_ERR ; goto done ; } DBG ( \"Requesting<S2SV_blank>authentication<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\" , user ) ; gpn_ret = getpwnam_r ( user , & pw_s , buffer , sizeof ( buffer ) , & pw ) ; if ( gpn_ret != 0 || pw == NULL || pw -> pw_dir == NULL || pw -> pw_dir [ 0 ] != '/' ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>credentials<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s,<S2SV_blank>(%s)\" , user , strerror ( errno ) ) ; retval = PAM_USER_UNKNOWN ; goto done ; } DBG ( \"Found<S2SV_blank>user<S2SV_blank>%s\" , user ) ; DBG ( \"Home<S2SV_blank>directory<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>%s\" , user , pw -> pw_dir ) ; if ( ! cfg -> auth_file ) { buf = NULL ; authfile_dir = secure_getenv ( DEFAULT_AUTHFILE_DIR_VAR ) ; if ( ! authfile_dir ) { DBG ( \"Variable<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>set.<S2SV_blank>Using<S2SV_blank>default<S2SV_blank>value<S2SV_blank>($HOME/.config/)\" , DEFAULT_AUTHFILE_DIR_VAR ) ; authfile_dir_len = strlen ( pw -> pw_dir ) + strlen ( \"/.config\" ) + strlen ( DEFAULT_AUTHFILE ) + 1 ; buf = malloc ( sizeof ( char ) * ( authfile_dir_len ) ) ; if ( ! buf ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } snprintf ( buf , authfile_dir_len , \"%s/.config%s\" , pw -> pw_dir , DEFAULT_AUTHFILE ) ; } else { DBG ( \"Variable<S2SV_blank>%s<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%s\" , DEFAULT_AUTHFILE_DIR_VAR , authfile_dir ) ; authfile_dir_len = strlen ( authfile_dir ) + strlen ( DEFAULT_AUTHFILE ) + 1 ; buf = malloc ( sizeof ( char ) * ( authfile_dir_len ) ) ; if ( ! buf ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } snprintf ( buf , authfile_dir_len , \"%s%s\" , authfile_dir , DEFAULT_AUTHFILE ) ; } DBG ( \"Using<S2SV_blank>default<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , buf ) ; cfg -> auth_file = buf ; should_free_auth_file = 1 ; buf = NULL ; } else { DBG ( \"Using<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , cfg -> auth_file ) ; } openasuser = geteuid ( ) == 0 && cfg -> openasuser ; if ( openasuser ) { if ( seteuid ( pw_s . pw_uid ) ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>user<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw_s . pw_uid ) ; retval = PAM_IGNORE ; goto done ; } DBG ( \"Switched<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw_s . pw_uid ) ; } retval = get_devices_from_authfile ( cfg -> auth_file , user , cfg -> max_devs , cfg -> debug , cfg -> debug_file , devices , & n_devices ) ; if ( openasuser ) { if ( seteuid ( 0 ) ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>0\" ) ; retval = PAM_IGNORE ; goto done ; } DBG ( \"Switched<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>0\" ) ; } if ( retval != 1 ) { n_devices = 0 ; } if ( n_devices == 0 ) { if ( cfg -> nouserok ) { DBG ( \"Found<S2SV_blank>no<S2SV_blank>devices<S2SV_blank>but<S2SV_blank>nouserok<S2SV_blank>specified.<S2SV_blank>Skipping<S2SV_blank>authentication\" ) ; retval = PAM_SUCCESS ; goto done ; } else if ( retval != 1 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>devices<S2SV_blank>from<S2SV_blank>file<S2SV_blank>%s\" , cfg -> auth_file ) ; retval = PAM_AUTHINFO_UNAVAIL ; goto done ; } else { DBG ( \"Found<S2SV_blank>no<S2SV_blank>devices.<S2SV_blank>Aborting.\" ) ; retval = PAM_AUTHINFO_UNAVAIL ; goto done ; } } if ( ! cfg -> authpending_file ) { int actual_size = snprintf ( buffer , BUFSIZE , DEFAULT_AUTHPENDING_FILE_PATH , getuid ( ) ) ; if ( actual_size >= 0 && actual_size < BUFSIZE ) { cfg -> authpending_file = strdup ( buffer ) ; } if ( ! cfg -> authpending_file ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>the<S2SV_blank>authpending_file,<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications<S2SV_blank>will<S2SV_blank>not<S2SV_blank>be<S2SV_blank>emitted\" ) ; } else { should_free_authpending_file = 1 ; } } else { if ( strlen ( cfg -> authpending_file ) == 0 ) { DBG ( \"authpending_file<S2SV_blank>is<S2SV_blank>set<S2SV_blank>to<S2SV_blank>an<S2SV_blank>empty<S2SV_blank>value,<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications<S2SV_blank>will<S2SV_blank>be<S2SV_blank>disabled\" ) ; cfg -> authpending_file = NULL ; } } int authpending_file_descriptor = - 1 ; if ( cfg -> authpending_file ) { DBG ( \"Using<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>for<S2SV_blank>emitting<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications\" , cfg -> authpending_file ) ; <S2SV_StartBug> authpending_file_descriptor = open ( cfg -> authpending_file , O_RDONLY | O_CREAT , 0664 ) ; <S2SV_EndBug> if ( authpending_file_descriptor < 0 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>emit<S2SV_blank>\\'authentication<S2SV_blank>started\\'<S2SV_blank>notification<S2SV_blank>by<S2SV_blank>opening<S2SV_blank>the<S2SV_blank>file<S2SV_blank>\\'%s\\',<S2SV_blank>(%s)\" , cfg -> authpending_file , strerror ( errno ) ) ; } } if ( cfg -> manual == 0 ) { if ( cfg -> interactive ) { converse ( pamh , PAM_PROMPT_ECHO_ON , cfg -> prompt != NULL ? cfg -> prompt : DEFAULT_PROMPT ) ; } retval = do_authentication ( cfg , devices , n_devices , pamh ) ; } else { retval = do_manual_authentication ( cfg , devices , n_devices , pamh ) ; } if ( authpending_file_descriptor >= 0 ) { if ( close ( authpending_file_descriptor ) < 0 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>emit<S2SV_blank>\\'authentication<S2SV_blank>stopped\\'<S2SV_blank>notification<S2SV_blank>by<S2SV_blank>closing<S2SV_blank>the<S2SV_blank>file<S2SV_blank>\\'%s\\',<S2SV_blank>(%s)\" , cfg -> authpending_file , strerror ( errno ) ) ; } } if ( retval != 1 ) { DBG ( \"do_authentication<S2SV_blank>returned<S2SV_blank>%d\" , retval ) ; retval = PAM_AUTH_ERR ; goto done ; } retval = PAM_SUCCESS ; done : free_devices ( devices , n_devices ) ; if ( buf ) { free ( buf ) ; buf = NULL ; } if ( should_free_origin ) { free ( ( char * ) cfg -> origin ) ; cfg -> origin = NULL ; } if ( should_free_appid ) { free ( ( char * ) cfg -> appid ) ; cfg -> appid = NULL ; } if ( should_free_auth_file ) { free ( ( char * ) cfg -> auth_file ) ; cfg -> auth_file = NULL ; } if ( should_free_authpending_file ) { free ( ( char * ) cfg -> authpending_file ) ; cfg -> authpending_file = NULL ; } if ( cfg -> alwaysok && retval != PAM_SUCCESS ) { DBG ( \"alwaysok<S2SV_blank>needed<S2SV_blank>(otherwise<S2SV_blank>return<S2SV_blank>with<S2SV_blank>%d)\" , retval ) ; retval = PAM_SUCCESS ; } DBG ( \"done.<S2SV_blank>[%s]\" , pam_strerror ( pamh , retval ) ) ; <S2SV_StartBug> return retval ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> O_RDONLY | O_CREAT | O_CLOEXEC | O_NOFOLLOW | O_NOCTTY <S2SV_ModStart> ) ) ; if ( cfg -> is_custom_debug_file ) { fclose ( cfg -> debug_file ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_sharpness ( loop_filter_info_n * lfi , int sharpness_lvl ) { int lvl ; for ( lvl = 0 ; lvl <= MAX_LOOP_FILTER ; lvl ++ ) { int block_inside_limit = lvl >> ( ( sharpness_lvl > 0 ) + ( sharpness_lvl > 4 ) ) ; if ( sharpness_lvl > 0 ) { if ( block_inside_limit > ( 9 - sharpness_lvl ) ) block_inside_limit = ( 9 - sharpness_lvl ) ; } if ( block_inside_limit < 1 ) block_inside_limit = 1 ; <S2SV_StartBug> vpx_memset ( lfi -> lfthr [ lvl ] . lim , block_inside_limit , SIMD_WIDTH ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( lfi -> lfthr [ lvl ] . mblim , ( 2 * ( lvl + 2 ) + block_inside_limit ) , <S2SV_EndBug> SIMD_WIDTH ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 1 ; memset <S2SV_ModEnd> ( lfi -> <S2SV_ModStart> SIMD_WIDTH ) ; memset <S2SV_ModEnd> ( lfi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void uipc_check_interrupt_locked ( void ) { if ( SAFE_FD_ISSET ( uipc_main . signal_fds [ 0 ] , & uipc_main . read_set ) ) { char sig_recv = 0 ; <S2SV_StartBug> recv ( uipc_main . signal_fds [ 0 ] , & sig_recv , sizeof ( sig_recv ) , MSG_WAITALL ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> , MSG_WAITALL ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1798\n\n```\nCWE-20 static unsigned long ioapic_read_indirect ( struct kvm_ioapic * ioapic , unsigned long addr , unsigned long length ) { unsigned long result = 0 ; switch ( ioapic -> ioregsel ) { case IOAPIC_REG_VERSION : result = ( ( ( ( IOAPIC_NUM_PINS - 1 ) & 0xff ) << 16 ) | ( IOAPIC_VERSION_ID & 0xff ) ) ; break ; case IOAPIC_REG_APIC_ID : case IOAPIC_REG_ARB_ID : result = ( ( ioapic -> id & 0xf ) << 24 ) ; break ; default : { u32 redir_index = ( ioapic -> ioregsel - 0x10 ) >> 1 ; u64 redir_content ; <S2SV_StartBug> ASSERT ( redir_index < IOAPIC_NUM_PINS ) ; <S2SV_EndBug> <S2SV_StartBug> redir_content = ioapic -> redirtbl [ redir_index ] . bits ; <S2SV_EndBug> result = ( ioapic -> ioregsel & 0x1 ) ? ( redir_content >> 32 ) & 0xffffffff : redir_content & 0xffffffff ; break ; } } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u64 redir_content ; if <S2SV_ModEnd> ( redir_index < <S2SV_ModStart> < IOAPIC_NUM_PINS ) <S2SV_ModEnd> redir_content = ioapic <S2SV_ModStart> ] . bits ; else redir_content = ~ 0ULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 <S2SV_StartBug> void <S2SV_EndBug> crm_send_remote_msg ( void * session , xmlNode * msg , gboolean encrypted ) { <S2SV_StartBug> if ( encrypted ) { <S2SV_EndBug> # ifdef HAVE_GNUTLS_GNUTLS_H cib_send_tls ( session , msg ) ; <S2SV_StartBug> # else <S2SV_EndBug> CRM_ASSERT ( encrypted == FALSE ) ; # endif } else { <S2SV_StartBug> cib_send_plaintext ( GPOINTER_TO_INT ( session ) , msg ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> int <S2SV_ModEnd> crm_send_remote_msg ( void <S2SV_ModStart> encrypted ) { int rc = - 1 ; char * xml_text = NULL ; int len = 0 ; xml_text = dump_xml_unformatted ( <S2SV_ModEnd> msg ) ; <S2SV_ModStart> msg ) ; if ( xml_text ) { len = strlen ( xml_text ) ; <S2SV_ModEnd> } else { <S2SV_ModStart> } else { crm_err ( \"Invalid<S2SV_blank>XML,<S2SV_blank>can<S2SV_blank>not<S2SV_blank>send<S2SV_blank>msg\" ) ; return - 1 ; } rc = crm_send_remote_msg_raw ( session , xml_text , len , encrypted ) ; if ( rc < 0 ) { goto done ; } rc = crm_send_remote_msg_raw ( session , REMOTE_MSG_TERMINATOR , strlen ( REMOTE_MSG_TERMINATOR ) , encrypted ) ; done : if ( rc < 0 ) { crm_err ( \"Failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>remote<S2SV_blank>msg,<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>%d\" , rc <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } free ( xml_text ) ; return rc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3741\n\n```\nCWE-20 WORD32 ih264d_video_decode ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ( dec_hdl -> pv_codec_handle ) ; WORD32 i4_err_status = 0 ; UWORD8 * pu1_buf = NULL ; WORD32 buflen ; UWORD32 u4_max_ofst , u4_length_of_start_code = 0 ; UWORD32 bytes_consumed = 0 ; UWORD32 cur_slice_is_nonref = 0 ; UWORD32 u4_next_is_aud ; UWORD32 u4_first_start_code_found = 0 ; WORD32 ret = 0 , api_ret_value = IV_SUCCESS ; WORD32 header_data_left = 0 , frame_data_left = 0 ; UWORD8 * pu1_bitstrm_buf ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; ithread_set_name ( ( void * ) \"Parse_thread\" ) ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; <S2SV_StartBug> ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; <S2SV_EndBug> ps_dec -> pv_dec_out = ps_dec_op ; if ( ps_dec -> init_done != 1 ) { return IV_FAIL ; } DATA_SYNC ( ) ; if ( 0 == ps_dec -> u1_flushfrm ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } ps_dec -> u1_pic_decode_done = 0 ; ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec -> ps_out_buffer = NULL ; if ( ps_dec_ip -> u4_size >= offsetof ( ivd_video_decode_ip_t , s_out_buffer ) ) ps_dec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 0 ; ps_dec -> s_disp_op . u4_error_code = 1 ; ps_dec -> u4_fmt_conv_num_rows = FMT_CONV_NUM_ROWS ; if ( 0 == ps_dec -> u4_share_disp_buf && ps_dec -> i4_decode_header == 0 ) { UWORD32 i ; if ( ps_dec -> ps_out_buffer -> u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec -> ps_out_buffer -> u4_num_bufs ; i ++ ) { if ( ps_dec -> ps_out_buffer -> pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec -> ps_out_buffer -> u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } if ( ps_dec -> u4_total_frames_decoded >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code = ERROR_FRAME_LIMIT_OVER ; return IV_FAIL ; } ps_dec -> u4_ts = ps_dec_ip -> u4_ts ; ps_dec_op -> u4_error_code = 0 ; ps_dec_op -> e_pic_type = - 1 ; ps_dec_op -> u4_output_present = 0 ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; { if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } } ps_dec -> u4_slice_start_code_found = 0 ; if ( ps_dec -> u1_init_dec_flag == 1 && ps_dec -> u4_share_disp_buf == 1 && ps_dec -> u1_flushfrm == 0 ) { UWORD32 i ; WORD32 disp_avail = 0 , free_id ; for ( i = 0 ; i < ps_dec -> u1_pic_bufs ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_mapping [ i ] || 1 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) { disp_avail = 1 ; break ; } } if ( 0 == disp_avail ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } while ( 1 ) { pic_buffer_t * ps_pic_buf ; ps_pic_buf = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & free_id ) ; if ( ps_pic_buf == NULL ) { UWORD32 i , display_queued = 0 ; for ( i = 0 ; i < ( MAX_DISP_BUFS_NEW ) ; i ++ ) { if ( 0 != ps_dec -> u4_disp_buf_mapping [ i ] ) { display_queued = 1 ; break ; } } if ( 1 == display_queued ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } } else { if ( 1 == ps_dec -> u4_disp_buf_mapping [ free_id ] ) { ih264_buf_mgr_set_status ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; } else { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; break ; } } } } if ( ps_dec -> u1_flushfrm && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; ps_dec -> u4_output_present = 1 ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; ps_dec_op -> u4_new_seq = 0 ; ps_dec_op -> u4_output_present = ps_dec -> u4_output_present ; ps_dec_op -> u4_progressive_frame_flag = ps_dec -> s_disp_op . u4_progressive_frame_flag ; ps_dec_op -> e_output_format = ps_dec -> s_disp_op . e_output_format ; ps_dec_op -> s_disp_frm_buf = ps_dec -> s_disp_op . s_disp_frm_buf ; ps_dec_op -> e4_fld_type = ps_dec -> s_disp_op . e4_fld_type ; ps_dec_op -> u4_ts = ps_dec -> s_disp_op . u4_ts ; ps_dec_op -> u4_disp_buf_id = ps_dec -> s_disp_op . u4_disp_buf_id ; ps_dec_op -> u4_is_ref_flag = - 1 ; ps_dec_op -> e_pic_type = IV_NA_FRAME ; ps_dec_op -> u4_frame_decoded_flag = 0 ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { return ( IV_SUCCESS ) ; } else return ( IV_FAIL ) ; } if ( ps_dec -> u1_res_changed == 1 ) { ih264d_init_decoder ( ps_dec ) ; } ps_dec -> u4_prev_nal_skipped = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> cur_dec_mb_num = 0 ; ps_dec -> cur_recon_mb_num = 0 ; ps_dec -> u4_first_slice_in_pic = 2 ; ps_dec -> u1_slice_header_done = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> u4_dec_thread_created = 0 ; ps_dec -> u4_bs_deblk_thread_created = 0 ; ps_dec -> u4_cur_bs_mb_num = 0 ; DEBUG_THREADS_PRINTF ( \"<S2SV_blank>Starting<S2SV_blank>process<S2SV_blank>call\\\\n\" ) ; ps_dec -> u4_pic_buf_got = 0 ; do { WORD32 buf_size ; pu1_buf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer + ps_dec_op -> u4_num_bytes_consumed ; u4_max_ofst = ps_dec_ip -> u4_num_Bytes - ps_dec_op -> u4_num_bytes_consumed ; if ( ( NULL == ps_dec -> pu1_bits_buf_dynamic ) && ( ps_dec -> i4_header_decoded & 1 ) ) { WORD32 size ; void * pv_buf ; void * pv_mem_ctxt = ps_dec -> pv_mem_ctxt ; size = MAX ( 256000 , ps_dec -> u2_pic_wd * ps_dec -> u2_pic_ht * 3 / 2 ) ; pv_buf = ps_dec -> pf_aligned_alloc ( pv_mem_ctxt , 128 , size ) ; RETURN_IF ( ( NULL == pv_buf ) , IV_FAIL ) ; ps_dec -> pu1_bits_buf_dynamic = pv_buf ; ps_dec -> u4_dynamic_bits_buf_size = size ; } if ( ps_dec -> pu1_bits_buf_dynamic ) { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_dynamic ; buf_size = ps_dec -> u4_dynamic_bits_buf_size ; } else { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_static ; buf_size = ps_dec -> u4_static_bits_buf_size ; } u4_next_is_aud = 0 ; buflen = ih264d_find_start_code ( pu1_buf , 0 , u4_max_ofst , & u4_length_of_start_code , & u4_next_is_aud ) ; if ( buflen == - 1 ) buflen = 0 ; buflen = MIN ( buflen , buf_size ) ; bytes_consumed = buflen + u4_length_of_start_code ; ps_dec_op -> u4_num_bytes_consumed += bytes_consumed ; { UWORD8 u1_firstbyte , u1_nal_ref_idc ; if ( ps_dec -> i4_app_skip_mode == IVD_SKIP_B ) { u1_firstbyte = * ( pu1_buf + u4_length_of_start_code ) ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_firstbyte ) ) ; if ( u1_nal_ref_idc == 0 ) { cur_slice_is_nonref = 1 ; continue ; } else { if ( 1 == cur_slice_is_nonref ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> e_pic_type = IV_B_FRAME ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } } } } if ( buflen ) { memcpy ( pu1_bitstrm_buf , pu1_buf + u4_length_of_start_code , buflen ) ; if ( ( buflen + 8 ) < buf_size ) { memset ( pu1_bitstrm_buf + buflen , 0 , 8 ) ; } u4_first_start_code_found = 1 ; } else { if ( u4_first_start_code_found == 0 ) { ps_dec -> i4_error_code = ERROR_START_CODE_NOT_FOUND ; ps_dec_op -> u4_error_code |= 1 << IVD_INSUFFICIENTDATA ; if ( ps_dec -> u4_pic_buf_got == 0 ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; ps_dec_op -> u4_error_code = ps_dec -> i4_error_code ; ps_dec_op -> u4_frame_decoded_flag = 0 ; return ( IV_FAIL ) ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } else { frame_data_left = 0 ; continue ; } } ps_dec -> u4_return_to_app = 0 ; ret = ih264d_parse_nal_unit ( dec_hdl , ps_dec_op , pu1_bitstrm_buf , buflen ) ; if ( ret != OK ) { UWORD32 error = ih264d_map_error ( ret ) ; ps_dec_op -> u4_error_code = error | ret ; api_ret_value = IV_FAIL ; if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) ) { break ; } if ( ( ret == ERROR_INCOMPLETE_FRAME ) || ( ret == ERROR_DANGLING_FIELD_IN_PIC ) ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; api_ret_value = IV_FAIL ; break ; } if ( ret == ERROR_IN_LAST_SLICE_OF_PIC ) { api_ret_value = IV_FAIL ; break ; } } if ( ps_dec -> u4_return_to_app ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } header_data_left = ( ( ps_dec -> i4_decode_header == 1 ) && ( ps_dec -> i4_header_decoded != 3 ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; frame_data_left = ( ( ( ps_dec -> i4_decode_header == 0 ) && ( ( ps_dec -> u1_pic_decode_done == 0 ) || ( u4_next_is_aud == 1 ) ) ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; } while ( ( header_data_left == 1 ) || ( frame_data_left == 1 ) ) ; if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ret != IVD_MEM_ALLOC_FAILED ) && ps_dec -> u2_total_mbs_coded < ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { WORD32 num_mb_skipped ; WORD32 prev_slice_err ; pocstruct_t temp_poc ; WORD32 ret1 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u4_pic_buf_got == 0 ) ) prev_slice_err = 1 ; else prev_slice_err = 2 ; ret1 = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL , ps_dec -> ps_cur_slice -> u2_frame_num , & temp_poc , prev_slice_err ) ; if ( ( ret1 == ERROR_UNAVAIL_PICBUF_T ) || ( ret1 == ERROR_UNAVAIL_MVBUF_T ) ) { return IV_FAIL ; } } if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) ) { ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } if ( ret == IVD_RES_CHANGED ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; } return IV_FAIL ; } if ( ps_dec -> u1_separate_parse ) { if ( ps_dec -> u4_num_cores == 2 ) { if ( ( ps_dec -> u4_nmb_deblk == 0 ) && ( ps_dec -> u4_start_recon_deblk == 1 ) && ( ps_dec -> ps_cur_sps -> u1_mb_aff_flag == 0 ) ) { UWORD32 u4_num_mbs , u4_max_addr ; tfr_ctxt_t s_tfr_ctxt ; tfr_ctxt_t * ps_tfr_cxt = & s_tfr_ctxt ; pad_mgr_t * ps_pad_mgr = & ps_dec -> s_pad_mgr ; u4_max_addr = ( ps_dec -> u2_frm_wd_in_mbs * ps_dec -> u2_frm_ht_in_mbs ) - 1 ; ps_dec -> u4_cur_bs_mb_num = u4_max_addr + 1 ; ih264d_init_deblk_tfr_ctxt ( ps_dec , ps_pad_mgr , ps_tfr_cxt , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; u4_num_mbs = u4_max_addr - ps_dec -> u4_cur_deblk_mb_num + 1 ; DEBUG_PERF_PRINTF ( \"mbs<S2SV_blank>left<S2SV_blank>for<S2SV_blank>deblocking=<S2SV_blank>%d<S2SV_blank>\\\\n\" , u4_num_mbs ) ; if ( u4_num_mbs != 0 ) ih264d_check_mb_map_deblk ( ps_dec , u4_num_mbs , ps_tfr_cxt , 1 ) ; ps_dec -> u4_start_recon_deblk = 0 ; } } ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } } DATA_SYNC ( ) ; if ( ( ps_dec_op -> u4_error_code & 0xff ) != ERROR_DYNAMIC_RESOLUTION_NOT_SUPPORTED ) { ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; } if ( ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> i4_decode_header == 1 && ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> u4_prev_nal_skipped ) { ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ERROR_DANGLING_FIELD_IN_PIC != i4_err_status ) ) { if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) { if ( 1 == ps_dec -> ps_cur_slice -> u1_bottom_field_flag ) { ps_dec -> u1_top_bottom_decoded |= BOT_FIELD_ONLY ; } else { ps_dec -> u1_top_bottom_decoded |= TOP_FIELD_ONLY ; } } if ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) { ret = ih264d_deblock_display ( ps_dec ) ; if ( ret != 0 ) { return IV_FAIL ; } } if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_dec -> i4_frametype = IV_IDR_FRAME ; } else if ( ps_dec -> i4_pic_type == B_SLICE ) { ps_dec -> i4_frametype = IV_B_FRAME ; } else if ( ps_dec -> i4_pic_type == P_SLICE ) { ps_dec -> i4_frametype = IV_P_FRAME ; } else if ( ps_dec -> i4_pic_type == I_SLICE ) { ps_dec -> i4_frametype = IV_I_FRAME ; } else { H264_DEC_DEBUG_PRINT ( \"Shouldn\\'t<S2SV_blank>come<S2SV_blank>here\\\\n\" ) ; } ps_dec -> i4_content_type = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded + 2 ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded - ps_dec -> ps_cur_slice -> u1_field_pic_flag ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } { if ( ( IVD_DECODE_FRAME_OUT == ps_dec -> e_frm_out_mode ) && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 1 ; } } ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; if ( ps_dec -> u4_output_present && ( ps_dec -> u4_fmt_conv_cur_row < ps_dec -> s_disp_frame_info . u4_y_ht ) ) { ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht - ps_dec -> u4_fmt_conv_cur_row ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; } if ( ps_dec -> i4_decode_header == 1 && ( ps_dec -> i4_header_decoded & 1 ) == 1 ) { ps_dec_op -> u4_progressive_frame_flag = 1 ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { if ( ( 0 == ps_dec -> ps_sps -> u1_frame_mbs_only_flag ) && ( 0 == ps_dec -> ps_sps -> u1_mb_aff_flag ) ) ps_dec_op -> u4_progressive_frame_flag = 0 ; } } DATA_SYNC ( ) ; H264_DEC_DEBUG_PRINT ( \"The<S2SV_blank>num<S2SV_blank>bytes<S2SV_blank>consumed:<S2SV_blank>%d\\\\n\" , ps_dec_op -> u4_num_bytes_consumed ) ; return api_ret_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) pv_api_op ; { UWORD32 u4_size ; u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4611\n\n```\nCWE-189 static void perf_event_interrupt ( struct pt_regs * regs ) { int i ; struct cpu_hw_events * cpuhw = & __get_cpu_var ( cpu_hw_events ) ; struct perf_event * event ; unsigned long val ; int found = 0 ; int nmi ; if ( cpuhw -> n_limited ) freeze_limited_counters ( cpuhw , mfspr ( SPRN_PMC5 ) , mfspr ( SPRN_PMC6 ) ) ; perf_read_regs ( regs ) ; nmi = perf_intr_is_nmi ( regs ) ; if ( nmi ) nmi_enter ( ) ; else irq_enter ( ) ; for ( i = 0 ; i < cpuhw -> n_events ; ++ i ) { event = cpuhw -> event [ i ] ; if ( ! event -> hw . idx || is_limited_pmc ( event -> hw . idx ) ) continue ; val = read_pmc ( event -> hw . idx ) ; if ( ( int ) val < 0 ) { found = 1 ; record_and_restart ( event , val , regs , nmi ) ; } } if ( ! found ) { for ( i = 0 ; i < ppmu -> n_counter ; ++ i ) { if ( is_limited_pmc ( i + 1 ) ) continue ; val = read_pmc ( i + 1 ) ; <S2SV_StartBug> if ( ( int ) val < 0 ) <S2SV_EndBug> write_pmc ( i + 1 , 0 ) ; } } write_mmcr0 ( cpuhw , cpuhw -> mmcr [ 0 ] ) ; if ( nmi ) nmi_exit ( ) ; else irq_exit ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( pmc_overflow ( val ) <S2SV_ModEnd> ) write_pmc (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15918\n\n```\nCWE-125 int SMB2_negotiate ( const unsigned int xid , struct cifs_ses * ses ) { struct smb_rqst rqst ; struct smb2_negotiate_req * req ; struct smb2_negotiate_rsp * rsp ; struct kvec iov [ 1 ] ; struct kvec rsp_iov ; int rc = 0 ; int resp_buftype ; struct TCP_Server_Info * server = ses -> server ; int blob_offset , blob_length ; char * security_blob ; int flags = CIFS_NEG_OP ; unsigned int total_len ; cifs_dbg ( FYI , \"Negotiate<S2SV_blank>protocol\\\\n\" ) ; if ( ! server ) { WARN ( 1 , \"%s:<S2SV_blank>server<S2SV_blank>is<S2SV_blank>NULL!\\\\n\" , __func__ ) ; return - EIO ; } rc = smb2_plain_req_init ( SMB2_NEGOTIATE , NULL , ( void * * ) & req , & total_len ) ; if ( rc ) return rc ; req -> sync_hdr . SessionId = 0 ; memset ( server -> preauth_sha_hash , 0 , SMB2_PREAUTH_HASH_SIZE ) ; memset ( ses -> preauth_sha_hash , 0 , SMB2_PREAUTH_HASH_SIZE ) ; if ( strcmp ( ses -> server -> vals -> version_string , SMB3ANY_VERSION_STRING ) == 0 ) { req -> Dialects [ 0 ] = cpu_to_le16 ( SMB30_PROT_ID ) ; req -> Dialects [ 1 ] = cpu_to_le16 ( SMB302_PROT_ID ) ; req -> DialectCount = cpu_to_le16 ( 2 ) ; total_len += 4 ; } else if ( strcmp ( ses -> server -> vals -> version_string , SMBDEFAULT_VERSION_STRING ) == 0 ) { req -> Dialects [ 0 ] = cpu_to_le16 ( SMB21_PROT_ID ) ; req -> Dialects [ 1 ] = cpu_to_le16 ( SMB30_PROT_ID ) ; req -> Dialects [ 2 ] = cpu_to_le16 ( SMB302_PROT_ID ) ; req -> Dialects [ 3 ] = cpu_to_le16 ( SMB311_PROT_ID ) ; req -> DialectCount = cpu_to_le16 ( 4 ) ; total_len += 8 ; } else { req -> Dialects [ 0 ] = cpu_to_le16 ( ses -> server -> vals -> protocol_id ) ; req -> DialectCount = cpu_to_le16 ( 1 ) ; total_len += 2 ; } if ( ses -> sign ) req -> SecurityMode = cpu_to_le16 ( SMB2_NEGOTIATE_SIGNING_REQUIRED ) ; else if ( global_secflags & CIFSSEC_MAY_SIGN ) req -> SecurityMode = cpu_to_le16 ( SMB2_NEGOTIATE_SIGNING_ENABLED ) ; else req -> SecurityMode = 0 ; req -> Capabilities = cpu_to_le32 ( ses -> server -> vals -> req_capabilities ) ; if ( ses -> server -> vals -> protocol_id == SMB20_PROT_ID ) memset ( req -> ClientGUID , 0 , SMB2_CLIENT_GUID_SIZE ) ; else { memcpy ( req -> ClientGUID , server -> client_guid , SMB2_CLIENT_GUID_SIZE ) ; if ( ( ses -> server -> vals -> protocol_id == SMB311_PROT_ID ) || ( strcmp ( ses -> server -> vals -> version_string , SMBDEFAULT_VERSION_STRING ) == 0 ) ) assemble_neg_contexts ( req , & total_len ) ; } iov [ 0 ] . iov_base = ( char * ) req ; iov [ 0 ] . iov_len = total_len ; memset ( & rqst , 0 , sizeof ( struct smb_rqst ) ) ; rqst . rq_iov = iov ; rqst . rq_nvec = 1 ; rc = cifs_send_recv ( xid , ses , & rqst , & resp_buftype , flags , & rsp_iov ) ; cifs_small_buf_release ( req ) ; rsp = ( struct smb2_negotiate_rsp * ) rsp_iov . iov_base ; if ( rc == - EOPNOTSUPP ) { cifs_dbg ( VFS , \"Dialect<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>server.<S2SV_blank>Consider<S2SV_blank>\" \"specifying<S2SV_blank>vers=1.0<S2SV_blank>or<S2SV_blank>vers=2.0<S2SV_blank>on<S2SV_blank>mount<S2SV_blank>for<S2SV_blank>accessing\" \"<S2SV_blank>older<S2SV_blank>servers\\\\n\" ) ; goto neg_exit ; } else if ( rc != 0 ) goto neg_exit ; if ( strcmp ( ses -> server -> vals -> version_string , SMB3ANY_VERSION_STRING ) == 0 ) { if ( rsp -> DialectRevision == cpu_to_le16 ( SMB20_PROT_ID ) ) { cifs_dbg ( VFS , \"SMB2<S2SV_blank>dialect<S2SV_blank>returned<S2SV_blank>but<S2SV_blank>not<S2SV_blank>requested\\\\n\" ) ; return - EIO ; } else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB21_PROT_ID ) ) { cifs_dbg ( VFS , \"SMB2.1<S2SV_blank>dialect<S2SV_blank>returned<S2SV_blank>but<S2SV_blank>not<S2SV_blank>requested\\\\n\" ) ; return - EIO ; } } else if ( strcmp ( ses -> server -> vals -> version_string , SMBDEFAULT_VERSION_STRING ) == 0 ) { if ( rsp -> DialectRevision == cpu_to_le16 ( SMB20_PROT_ID ) ) { cifs_dbg ( VFS , \"SMB2<S2SV_blank>dialect<S2SV_blank>returned<S2SV_blank>but<S2SV_blank>not<S2SV_blank>requested\\\\n\" ) ; return - EIO ; } else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB21_PROT_ID ) ) { ses -> server -> ops = & smb21_operations ; <S2SV_StartBug> } else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB311_PROT_ID ) ) <S2SV_EndBug> <S2SV_StartBug> ses -> server -> ops = & smb311_operations ; <S2SV_EndBug> } else if ( le16_to_cpu ( rsp -> DialectRevision ) != ses -> server -> vals -> protocol_id ) { cifs_dbg ( VFS , \"Illegal<S2SV_blank>0x%x<S2SV_blank>dialect<S2SV_blank>returned:<S2SV_blank>not<S2SV_blank>requested\\\\n\" , le16_to_cpu ( rsp -> DialectRevision ) ) ; return - EIO ; } cifs_dbg ( FYI , \"mode<S2SV_blank>0x%x\\\\n\" , rsp -> SecurityMode ) ; if ( rsp -> DialectRevision == cpu_to_le16 ( SMB20_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb2.0<S2SV_blank>dialect\\\\n\" ) ; else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB21_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb2.1<S2SV_blank>dialect\\\\n\" ) ; else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB30_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb3.0<S2SV_blank>dialect\\\\n\" ) ; else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB302_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb3.02<S2SV_blank>dialect\\\\n\" ) ; else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB311_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb3.1.1<S2SV_blank>dialect\\\\n\" ) ; else { cifs_dbg ( VFS , \"Illegal<S2SV_blank>dialect<S2SV_blank>returned<S2SV_blank>by<S2SV_blank>server<S2SV_blank>0x%x\\\\n\" , le16_to_cpu ( rsp -> DialectRevision ) ) ; rc = - EIO ; goto neg_exit ; } server -> dialect = le16_to_cpu ( rsp -> DialectRevision ) ; memcpy ( server -> preauth_sha_hash , ses -> preauth_sha_hash , SMB2_PREAUTH_HASH_SIZE ) ; server -> negflavor = CIFS_NEGFLAVOR_EXTENDED ; server -> maxBuf = min_t ( unsigned int , le32_to_cpu ( rsp -> MaxTransactSize ) , SMB2_MAX_BUFFER_SIZE ) ; server -> max_read = le32_to_cpu ( rsp -> MaxReadSize ) ; server -> max_write = le32_to_cpu ( rsp -> MaxWriteSize ) ; server -> sec_mode = le16_to_cpu ( rsp -> SecurityMode ) ; if ( ( server -> sec_mode & SMB2_SEC_MODE_FLAGS_ALL ) != server -> sec_mode ) cifs_dbg ( FYI , \"Server<S2SV_blank>returned<S2SV_blank>unexpected<S2SV_blank>security<S2SV_blank>mode<S2SV_blank>0x%x\\\\n\" , server -> sec_mode ) ; server -> capabilities = le32_to_cpu ( rsp -> Capabilities ) ; server -> capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES ; security_blob = smb2_get_data_area_len ( & blob_offset , & blob_length , ( struct smb2_sync_hdr * ) rsp ) ; if ( blob_length == 0 ) { cifs_dbg ( FYI , \"missing<S2SV_blank>security<S2SV_blank>blob<S2SV_blank>on<S2SV_blank>negprot\\\\n\" ) ; server -> sec_ntlmssp = true ; } rc = cifs_enable_signing ( server , ses -> sign ) ; if ( rc ) goto neg_exit ; if ( blob_length ) { rc = decode_negTokenInit ( security_blob , blob_length , server ) ; if ( rc == 1 ) rc = 0 ; else if ( rc == 0 ) rc = - EIO ; } if ( rsp -> DialectRevision == cpu_to_le16 ( SMB311_PROT_ID ) ) { if ( rsp -> NegotiateContextCount ) rc = smb311_decode_neg_context ( rsp , server , rsp_iov . iov_len ) ; else cifs_dbg ( VFS , \"Missing<S2SV_blank>expected<S2SV_blank>negotiate<S2SV_blank>contexts\\\\n\" ) ; } neg_exit : free_rsp_buf ( resp_buftype , rsp ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & smb21_operations ; ses -> server -> vals = & smb21_values ; <S2SV_ModStart> SMB311_PROT_ID ) ) { <S2SV_ModStart> & smb311_operations ; ses -> server -> vals = & smb311_values ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int hfsplus_set_posix_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int err ; char * xattr_name ; size_t size = 0 ; char * value = NULL ; hfs_dbg ( ACL_MOD , \"[%s]:<S2SV_blank>ino<S2SV_blank>%lu\\\\n\" , __func__ , inode -> i_ino ) ; switch ( type ) { case ACL_TYPE_ACCESS : xattr_name = XATTR_NAME_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> err = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( err < 0 ) return err ; } err = 0 ; break ; case ACL_TYPE_DEFAULT : xattr_name = XATTR_NAME_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { size = posix_acl_xattr_size ( acl -> a_count ) ; if ( unlikely ( size > HFSPLUS_MAX_INLINE_DATA_SIZE ) ) return - ENOMEM ; value = ( char * ) hfsplus_alloc_attr_entry ( ) ; if ( unlikely ( ! value ) ) return - ENOMEM ; err = posix_acl_to_xattr ( & init_user_ns , acl , value , size ) ; if ( unlikely ( err < 0 ) ) goto end_set_acl ; } err = __hfsplus_setxattr ( inode , xattr_name , value , size , 0 ) ; end_set_acl : hfsplus_destroy_attr_entry ( ( hfsplus_attr_entry * ) value ) ; if ( ! err ) set_cached_acl ( inode , type , acl ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { err = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( err <S2SV_ModEnd> ) return err\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3186\n\n```\nCWE-119 static int picolcd_raw_event ( struct hid_device * hdev , struct hid_report * report , u8 * raw_data , int size ) { struct picolcd_data * data = hid_get_drvdata ( hdev ) ; unsigned long flags ; int ret = 0 ; if ( ! data ) return 1 ; <S2SV_StartBug> if ( report -> id == REPORT_KEY_STATE ) { <S2SV_EndBug> if ( data -> input_keys ) ret = picolcd_raw_keypad ( data , report , raw_data + 1 , size - 1 ) ; } else if ( report -> id == REPORT_IR_DATA ) { ret = picolcd_raw_cir ( data , report , raw_data + 1 , size - 1 ) ; } else { spin_lock_irqsave ( & data -> lock , flags ) ; if ( data -> pending ) { memcpy ( data -> pending -> raw_data , raw_data + 1 , size - 1 ) ; data -> pending -> raw_size = size - 1 ; data -> pending -> in_report = report ; complete ( & data -> pending -> ready ) ; } spin_unlock_irqrestore ( & data -> lock , flags ) ; } picolcd_debug_raw_event ( data , hdev , report , raw_data , size ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( size > 64 ) { hid_warn ( hdev , \"invalid<S2SV_blank>size<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>for<S2SV_blank>picolcd<S2SV_blank>raw<S2SV_blank>event\\\\n\" , size ) ; return 0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15857\n\n```\nCWE-416 ExprDef * ExprAppendMultiKeysymList ( ExprDef * expr , ExprDef * append ) { unsigned nSyms = darray_size ( expr -> keysym_list . syms ) ; unsigned numEntries = darray_size ( append -> keysym_list . syms ) ; darray_append ( expr -> keysym_list . symsMapIndex , nSyms ) ; darray_append ( expr -> keysym_list . symsNumEntries , numEntries ) ; darray_concat ( expr -> keysym_list . syms , append -> keysym_list . syms ) ; <S2SV_StartBug> FreeStmt ( ( ParseCommon * ) & append ) ; <S2SV_EndBug> return expr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ParseCommon * ) <S2SV_ModEnd> append ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2232\n\n```\nCWE-20 static struct dst_entry * ip6_sk_dst_check ( struct sock * sk , struct dst_entry * dst , const struct flowi6 * fl6 ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; <S2SV_StartBug> struct rt6_info * rt = ( struct rt6_info * ) dst ; <S2SV_EndBug> if ( ! dst ) <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( ip6_rt_check ( & rt -> rt6i_dst , & fl6 -> daddr , np -> daddr_cache ) || # ifdef CONFIG_IPV6_SUBTREES ip6_rt_check ( & rt -> rt6i_src , & fl6 -> saddr , np -> saddr_cache ) || # endif ( fl6 -> flowi6_oif && fl6 -> flowi6_oif != dst -> dev -> ifindex ) ) { dst_release ( dst ) ; dst = NULL ; } out : return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rt6_info * rt <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) goto out ; if ( dst -> ops -> family != AF_INET6 ) { dst_release ( dst ) ; return NULL ; } rt = ( struct rt6_info * ) dst\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8481\n\n```\nCWE-399 int x86_decode_insn ( struct x86_emulate_ctxt * ctxt , void * insn , int insn_len ) { int rc = X86EMUL_CONTINUE ; int mode = ctxt -> mode ; int def_op_bytes , def_ad_bytes , goffset , simd_prefix ; bool op_prefix = false ; bool has_seg_override = false ; struct opcode opcode ; ctxt -> memop . type = OP_NONE ; ctxt -> memopp = NULL ; ctxt -> _eip = ctxt -> eip ; ctxt -> fetch . ptr = ctxt -> fetch . data ; ctxt -> fetch . end = ctxt -> fetch . data + insn_len ; ctxt -> opcode_len = 1 ; if ( insn_len > 0 ) memcpy ( ctxt -> fetch . data , insn , insn_len ) ; else { rc = __do_insn_fetch_bytes ( ctxt , 1 ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; } switch ( mode ) { case X86EMUL_MODE_REAL : case X86EMUL_MODE_VM86 : case X86EMUL_MODE_PROT16 : def_op_bytes = def_ad_bytes = 2 ; break ; case X86EMUL_MODE_PROT32 : def_op_bytes = def_ad_bytes = 4 ; break ; # ifdef CONFIG_X86_64 case X86EMUL_MODE_PROT64 : def_op_bytes = 4 ; def_ad_bytes = 8 ; break ; # endif default : return EMULATION_FAILED ; } ctxt -> op_bytes = def_op_bytes ; ctxt -> ad_bytes = def_ad_bytes ; for ( ; ; ) { switch ( ctxt -> b = insn_fetch ( u8 , ctxt ) ) { case 0x66 : op_prefix = true ; ctxt -> op_bytes = def_op_bytes ^ 6 ; break ; case 0x67 : if ( mode == X86EMUL_MODE_PROT64 ) ctxt -> ad_bytes = def_ad_bytes ^ 12 ; else ctxt -> ad_bytes = def_ad_bytes ^ 6 ; break ; case 0x26 : case 0x2e : case 0x36 : case 0x3e : has_seg_override = true ; ctxt -> seg_override = ( ctxt -> b >> 3 ) & 3 ; break ; case 0x64 : case 0x65 : has_seg_override = true ; ctxt -> seg_override = ctxt -> b & 7 ; break ; case 0x40 ... 0x4f : if ( mode != X86EMUL_MODE_PROT64 ) goto done_prefixes ; ctxt -> rex_prefix = ctxt -> b ; continue ; case 0xf0 : ctxt -> lock_prefix = 1 ; break ; case 0xf2 : case 0xf3 : ctxt -> rep_prefix = ctxt -> b ; break ; default : goto done_prefixes ; } ctxt -> rex_prefix = 0 ; } done_prefixes : if ( ctxt -> rex_prefix & 8 ) ctxt -> op_bytes = 8 ; opcode = opcode_table [ ctxt -> b ] ; if ( ctxt -> b == 0x0f ) { ctxt -> opcode_len = 2 ; ctxt -> b = insn_fetch ( u8 , ctxt ) ; opcode = twobyte_table [ ctxt -> b ] ; if ( ctxt -> b == 0x38 ) { ctxt -> opcode_len = 3 ; ctxt -> b = insn_fetch ( u8 , ctxt ) ; opcode = opcode_map_0f_38 [ ctxt -> b ] ; } } ctxt -> d = opcode . flags ; if ( ctxt -> d & ModRM ) ctxt -> modrm = insn_fetch ( u8 , ctxt ) ; if ( ctxt -> opcode_len == 1 && ( ctxt -> b == 0xc5 || ctxt -> b == 0xc4 ) && ( mode == X86EMUL_MODE_PROT64 || ( mode >= X86EMUL_MODE_PROT16 && ( ctxt -> modrm & 0x80 ) ) ) ) { ctxt -> d = NotImpl ; } while ( ctxt -> d & GroupMask ) { switch ( ctxt -> d & GroupMask ) { case Group : goffset = ( ctxt -> modrm >> 3 ) & 7 ; opcode = opcode . u . group [ goffset ] ; break ; case GroupDual : goffset = ( ctxt -> modrm >> 3 ) & 7 ; if ( ( ctxt -> modrm >> 6 ) == 3 ) opcode = opcode . u . gdual -> mod3 [ goffset ] ; else opcode = opcode . u . gdual -> mod012 [ goffset ] ; break ; case RMExt : goffset = ctxt -> modrm & 7 ; opcode = opcode . u . group [ goffset ] ; break ; case Prefix : if ( ctxt -> rep_prefix && op_prefix ) return EMULATION_FAILED ; simd_prefix = op_prefix ? 0x66 : ctxt -> rep_prefix ; switch ( simd_prefix ) { case 0x00 : opcode = opcode . u . gprefix -> pfx_no ; break ; case 0x66 : opcode = opcode . u . gprefix -> pfx_66 ; break ; case 0xf2 : opcode = opcode . u . gprefix -> pfx_f2 ; break ; case 0xf3 : opcode = opcode . u . gprefix -> pfx_f3 ; break ; } break ; case Escape : if ( ctxt -> modrm > 0xbf ) opcode = opcode . u . esc -> high [ ctxt -> modrm - 0xc0 ] ; else opcode = opcode . u . esc -> op [ ( ctxt -> modrm >> 3 ) & 7 ] ; break ; default : return EMULATION_FAILED ; } ctxt -> d &= ~ ( u64 ) GroupMask ; ctxt -> d |= opcode . flags ; } if ( ctxt -> d == 0 ) return EMULATION_FAILED ; ctxt -> execute = opcode . u . execute ; if ( unlikely ( ctxt -> ud ) && likely ( ! ( ctxt -> d & EmulateOnUD ) ) ) return EMULATION_FAILED ; if ( unlikely ( ctxt -> d & ( NotImpl | Stack | Op3264 | Sse | Mmx | Intercept | CheckPerm ) ) ) { ctxt -> check_perm = opcode . check_perm ; ctxt -> intercept = opcode . intercept ; if ( ctxt -> d & NotImpl ) return EMULATION_FAILED ; if ( mode == X86EMUL_MODE_PROT64 && ( ctxt -> d & Stack ) ) ctxt -> op_bytes = 8 ; if ( ctxt -> d & Op3264 ) { if ( mode == X86EMUL_MODE_PROT64 ) ctxt -> op_bytes = 8 ; else ctxt -> op_bytes = 4 ; } if ( ctxt -> d & Sse ) ctxt -> op_bytes = 16 ; else if ( ctxt -> d & Mmx ) ctxt -> op_bytes = 8 ; } if ( ctxt -> d & ModRM ) { rc = decode_modrm ( ctxt , & ctxt -> memop ) ; if ( ! has_seg_override ) { has_seg_override = true ; ctxt -> seg_override = ctxt -> modrm_seg ; } } else if ( ctxt -> d & MemAbs ) rc = decode_abs ( ctxt , & ctxt -> memop ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; if ( ! has_seg_override ) ctxt -> seg_override = VCPU_SREG_DS ; ctxt -> memop . addr . mem . seg = ctxt -> seg_override ; rc = decode_operand ( ctxt , & ctxt -> src , ( ctxt -> d >> SrcShift ) & OpMask ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; rc = decode_operand ( ctxt , & ctxt -> src2 , ( ctxt -> d >> Src2Shift ) & OpMask ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; rc = decode_operand ( ctxt , & ctxt -> dst , ( ctxt -> d >> DstShift ) & OpMask ) ; <S2SV_StartBug> done : <S2SV_EndBug> if ( ctxt -> rip_relative ) <S2SV_StartBug> ctxt -> memopp -> addr . mem . ea += ctxt -> _eip ; <S2SV_EndBug> return ( rc != X86EMUL_CONTINUE ) ? EMULATION_FAILED : EMULATION_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> OpMask ) ; <S2SV_ModEnd> if ( ctxt <S2SV_ModStart> -> _eip ; done :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6401\n\n```\nCWE-310 static void test_iterators ( ) { <S2SV_StartBug> json_t * object , * foo , * bar , * baz ; <S2SV_EndBug> <S2SV_StartBug> void * iter ; <S2SV_EndBug> if ( json_object_iter ( NULL ) ) fail ( \"able<S2SV_blank>to<S2SV_blank>iterate<S2SV_blank>over<S2SV_blank>NULL\" ) ; if ( json_object_iter_next ( NULL , NULL ) ) fail ( \"able<S2SV_blank>to<S2SV_blank>increment<S2SV_blank>an<S2SV_blank>iterator<S2SV_blank>on<S2SV_blank>a<S2SV_blank>NULL<S2SV_blank>object\" ) ; object = json_object ( ) ; foo = json_string ( \"foo\" ) ; bar = json_string ( \"bar\" ) ; baz = json_string ( \"baz\" ) ; if ( ! object || ! foo || ! bar || ! bar ) fail ( \"unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>values\" ) ; if ( json_object_iter_next ( object , NULL ) ) fail ( \"able<S2SV_blank>to<S2SV_blank>increment<S2SV_blank>a<S2SV_blank>NULL<S2SV_blank>iterator\" ) ; if ( json_object_set ( object , \"a\" , foo ) || json_object_set ( object , \"b\" , bar ) || json_object_set ( object , \"c\" , baz ) ) fail ( \"unable<S2SV_blank>to<S2SV_blank>populate<S2SV_blank>object\" ) ; iter = json_object_iter ( object ) ; if ( ! iter ) fail ( \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>iterator\" ) ; <S2SV_StartBug> if ( strcmp ( json_object_iter_key ( iter ) , \"a\" ) ) <S2SV_EndBug> fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>key\" ) ; if ( json_object_iter_value ( iter ) != foo ) <S2SV_StartBug> fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>value\" ) ; <S2SV_EndBug> <S2SV_StartBug> iter = json_object_iter_next ( object , iter ) ; <S2SV_EndBug> if ( ! iter ) fail ( \"unable<S2SV_blank>to<S2SV_blank>increment<S2SV_blank>iterator\" ) ; if ( strcmp ( json_object_iter_key ( iter ) , \"b\" ) ) <S2SV_StartBug> fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>key\" ) ; <S2SV_EndBug> <S2SV_StartBug> if ( json_object_iter_value ( iter ) != bar ) <S2SV_EndBug> fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>value\" ) ; iter = json_object_iter_next ( object , iter ) ; if ( ! iter ) fail ( \"unable<S2SV_blank>to<S2SV_blank>increment<S2SV_blank>iterator\" ) ; if ( strcmp ( json_object_iter_key ( iter ) , \"c\" ) ) fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>key\" ) ; <S2SV_StartBug> if ( json_object_iter_value ( iter ) != baz ) <S2SV_EndBug> fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>value\" ) ; if ( json_object_iter_next ( object , iter ) != NULL ) fail ( \"able<S2SV_blank>to<S2SV_blank>iterate<S2SV_blank>over<S2SV_blank>the<S2SV_blank>end\" ) ; if ( json_object_iter_at ( object , \"foo\" ) ) fail ( \"json_object_iter_at()<S2SV_blank>succeeds<S2SV_blank>for<S2SV_blank>non-existent<S2SV_blank>key\" ) ; iter = json_object_iter_at ( object , \"b\" ) ; if ( ! iter ) fail ( \"json_object_iter_at()<S2SV_blank>fails<S2SV_blank>for<S2SV_blank>an<S2SV_blank>existing<S2SV_blank>key\" ) ; if ( strcmp ( json_object_iter_key ( iter ) , \"b\" ) ) fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>key\" ) ; if ( json_object_iter_value ( iter ) != bar ) fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>value\" ) ; iter = json_object_iter_next ( object , iter ) ; if ( ! iter ) fail ( \"unable<S2SV_blank>to<S2SV_blank>increment<S2SV_blank>iterator\" ) ; if ( strcmp ( json_object_iter_key ( iter ) , \"c\" ) ) fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>key\" ) ; if ( json_object_iter_value ( iter ) != baz ) fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>value\" ) ; if ( json_object_iter_set ( object , iter , bar ) ) fail ( \"unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>value<S2SV_blank>at<S2SV_blank>iterator\" ) ; if ( strcmp ( json_object_iter_key ( iter ) , \"c\" ) ) fail ( \"json_object_iter_key()<S2SV_blank>fails<S2SV_blank>after<S2SV_blank>json_object_iter_set()\" ) ; if ( json_object_iter_value ( iter ) != bar ) fail ( \"json_object_iter_value()<S2SV_blank>fails<S2SV_blank>after<S2SV_blank>json_object_iter_set()\" ) ; if ( json_object_get ( object , \"c\" ) != bar ) fail ( \"json_object_get()<S2SV_blank>fails<S2SV_blank>after<S2SV_blank>json_object_iter_set()\" ) ; json_decref ( object ) ; json_decref ( foo ) ; json_decref ( bar ) ; json_decref ( baz ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) { int i ; <S2SV_ModStart> * baz ; const char * iter_keys [ 3 ] ; int have_key [ 3 ] = { 0 , 0 , 0 } ; json_t * iter_values [ 3 ] ; <S2SV_ModStart> \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>iterator\" ) ; iter_keys [ 0 ] = json_object_iter_key ( iter ) ; iter_values [ 0 ] = json_object_iter_value ( iter ) ; iter = json_object_iter_next ( object , iter ) ; if ( ! iter ) fail ( \"unable<S2SV_blank>to<S2SV_blank>increment<S2SV_blank>iterator\" ) ; iter_keys [ 1 ] = json_object_iter_key ( iter ) ; iter_values [ 1 ] = json_object_iter_value ( iter ) ; iter = json_object_iter_next ( object , iter ) ; if ( ! iter ) fail ( \"unable<S2SV_blank>to<S2SV_blank>increment<S2SV_blank>iterator\" ) ; iter_keys [ 2 ] = json_object_iter_key ( iter ) ; iter_values [ 2 ] = json_object_iter_value ( iter ) ; if ( json_object_iter_next ( object , iter ) != NULL ) fail ( \"able<S2SV_blank>to<S2SV_blank>iterate<S2SV_blank>over<S2SV_blank>the<S2SV_blank>end\" ) ; for ( i = 0 ; i < 3 ; i ++ ) { <S2SV_ModStart> ( strcmp ( iter_keys [ i ] <S2SV_ModEnd> , \"a\" ) <S2SV_ModStart> , \"a\" ) == 0 ) { if ( iter_values [ i ] <S2SV_ModEnd> != foo ) <S2SV_ModStart> ) fail ( \"wrong<S2SV_blank>value<S2SV_blank>for<S2SV_blank>iter<S2SV_blank>key<S2SV_blank>a\" ) ; else have_key [ 0 ] = 1 ; } else if ( strcmp ( iter_keys [ i ] , \"b\" ) == 0 ) { if ( iter_values [ i ] != bar ) fail ( \"wrong<S2SV_blank>value<S2SV_blank>for<S2SV_blank>iter<S2SV_blank>key<S2SV_blank>b\" ) ; else have_key [ 1 ] = 1 ; } else if ( strcmp ( iter_keys [ i ] , \"c\" ) == 0 ) { if ( iter_values [ i ] != baz ) fail ( \"wrong<S2SV_blank>value<S2SV_blank>for<S2SV_blank>iter<S2SV_blank>key<S2SV_blank>c\" ) ; else have_key [ 2 ] = 1 ; } } for ( i = 0 ; i < 3 ; i ++ ) { if ( ! have_key [ i ] ) fail ( \"a<S2SV_blank>key<S2SV_blank>wasn\\'t<S2SV_blank>iterated<S2SV_blank>over\" ) ; } if ( json_object_iter_at ( object , \"foo\" ) ) fail ( \"json_object_iter_at()<S2SV_blank>succeeds<S2SV_blank>for<S2SV_blank>non-existent<S2SV_blank>key\" ) ; iter = json_object_iter_at ( object , \"b\" ) ; if ( ! iter ) fail ( \"json_object_iter_at()<S2SV_blank>fails<S2SV_blank>for<S2SV_blank>an<S2SV_blank>existing<S2SV_blank>key\" ) ; if ( strcmp ( json_object_iter_key ( iter ) , \"b\" ) ) fail ( \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>key\" ) ; if ( json_object_iter_value ( iter ) != bar ) fail ( <S2SV_ModStart> \"iterating<S2SV_blank>failed:<S2SV_blank>wrong<S2SV_blank>value\" ) ; if ( json_object_iter_set ( object , iter , baz ) ) fail ( \"unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>value<S2SV_blank>at<S2SV_blank>iterator\" <S2SV_ModEnd> ) ; if <S2SV_ModStart> ) fail ( \"json_object_iter_key()<S2SV_blank>fails<S2SV_blank>after<S2SV_blank>json_object_iter_set()\" <S2SV_ModEnd> ) ; if <S2SV_ModStart> iter ) != baz ) fail ( \"json_object_iter_value()<S2SV_blank>fails<S2SV_blank>after<S2SV_blank>json_object_iter_set()\" ) ; if ( json_object_get ( object , \"b\" <S2SV_ModEnd> ) != baz <S2SV_ModStart> ) != baz <S2SV_ModEnd> ) fail (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 static int cac_get_serial_nr_from_CUID ( sc_card_t * card , sc_serial_number_t * serial ) { cac_private_data_t * priv = CAC_DATA ( card ) ; SC_FUNC_CALLED ( card -> ctx , SC_LOG_DEBUG_NORMAL ) ; if ( card -> serialnr . len ) { * serial = card -> serialnr ; SC_FUNC_RETURN ( card -> ctx , SC_LOG_DEBUG_NORMAL , SC_SUCCESS ) ; } if ( priv -> cac_id_len ) { serial -> len = MIN ( priv -> cac_id_len , SC_MAX_SERIALNR ) ; <S2SV_StartBug> memcpy ( serial -> value , priv -> cac_id , priv -> cac_id_len ) ; <S2SV_EndBug> SC_FUNC_RETURN ( card -> ctx , SC_LOG_DEBUG_NORMAL , SC_SUCCESS ) ; } SC_FUNC_RETURN ( card -> ctx , SC_LOG_DEBUG_NORMAL , SC_ERROR_FILE_NOT_FOUND ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> cac_id , serial -> len <S2SV_ModEnd> ) ; SC_FUNC_RETURN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { PadContext * s = inlink -> dst -> priv ; AVFrame * out ; int needs_copy = frame_needs_copy ( s , in ) ; if ( needs_copy ) { av_log ( inlink -> dst , AV_LOG_DEBUG , \"Direct<S2SV_blank>padding<S2SV_blank>impossible<S2SV_blank>allocating<S2SV_blank>new<S2SV_blank>frame\\\\n\" ) ; out = ff_get_video_buffer ( inlink -> dst -> outputs [ 0 ] , FFMAX ( inlink -> w , s -> w ) , FFMAX ( inlink -> h , s -> h ) ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; } else { int i ; out = in ; <S2SV_StartBug> for ( i = 0 ; i < 4 && out -> data [ i ] ; i ++ ) { <S2SV_EndBug> int hsub = s -> draw . hsub [ i ] ; int vsub = s -> draw . vsub [ i ] ; out -> data [ i ] -= ( s -> x >> hsub ) * s -> draw . pixelstep [ i ] + ( s -> y >> vsub ) * out -> linesize [ i ] ; } } if ( s -> y ) { ff_fill_rectangle ( & s -> draw , & s -> color , out -> data , out -> linesize , 0 , 0 , s -> w , s -> y ) ; } if ( s -> h > s -> y + s -> in_h ) { ff_fill_rectangle ( & s -> draw , & s -> color , out -> data , out -> linesize , 0 , s -> y + s -> in_h , s -> w , s -> h - s -> y - s -> in_h ) ; } ff_fill_rectangle ( & s -> draw , & s -> color , out -> data , out -> linesize , 0 , s -> y , s -> x , in -> height ) ; if ( needs_copy ) { ff_copy_rectangle2 ( & s -> draw , out -> data , out -> linesize , in -> data , in -> linesize , s -> x , s -> y , 0 , 0 , in -> width , in -> height ) ; } ff_fill_rectangle ( & s -> draw , & s -> color , out -> data , out -> linesize , s -> x + s -> in_w , s -> y , s -> w - s -> x - s -> in_w , in -> height ) ; out -> width = s -> w ; out -> height = s -> h ; if ( in != out ) av_frame_free ( & in ) ; return ff_filter_frame ( inlink -> dst -> outputs [ 0 ] , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ i ] && out -> linesize [ i ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15127\n\n```\nCWE-000 int hugetlb_mcopy_atomic_pte ( struct mm_struct * dst_mm , pte_t * dst_pte , struct vm_area_struct * dst_vma , unsigned long dst_addr , unsigned long src_addr , struct page * * pagep ) { int vm_shared = dst_vma -> vm_flags & VM_SHARED ; struct hstate * h = hstate_vma ( dst_vma ) ; pte_t _dst_pte ; spinlock_t * ptl ; int ret ; struct page * page ; if ( ! * pagep ) { ret = - ENOMEM ; page = alloc_huge_page ( dst_vma , dst_addr , 0 ) ; if ( IS_ERR ( page ) ) goto out ; ret = copy_huge_page_from_user ( page , ( const void __user * ) src_addr , pages_per_huge_page ( h ) , false ) ; if ( unlikely ( ret ) ) { ret = - EFAULT ; * pagep = page ; goto out ; } } else { page = * pagep ; * pagep = NULL ; } __SetPageUptodate ( page ) ; set_page_huge_active ( page ) ; if ( vm_shared ) { struct address_space * mapping = dst_vma -> vm_file -> f_mapping ; pgoff_t idx = vma_hugecache_offset ( h , dst_vma , dst_addr ) ; ret = huge_add_to_page_cache ( page , mapping , idx ) ; if ( ret ) goto out_release_nounlock ; } ptl = huge_pte_lockptr ( h , dst_mm , dst_pte ) ; spin_lock ( ptl ) ; ret = - EEXIST ; if ( ! huge_pte_none ( huge_ptep_get ( dst_pte ) ) ) goto out_release_unlock ; if ( vm_shared ) { page_dup_rmap ( page , true ) ; } else { ClearPagePrivate ( page ) ; hugepage_add_new_anon_rmap ( page , dst_vma , dst_addr ) ; } _dst_pte = make_huge_pte ( dst_vma , page , dst_vma -> vm_flags & VM_WRITE ) ; if ( dst_vma -> vm_flags & VM_WRITE ) _dst_pte = huge_pte_mkdirty ( _dst_pte ) ; _dst_pte = pte_mkyoung ( _dst_pte ) ; set_huge_pte_at ( dst_mm , dst_addr , dst_pte , _dst_pte ) ; ( void ) huge_ptep_set_access_flags ( dst_vma , dst_addr , dst_pte , _dst_pte , dst_vma -> vm_flags & VM_WRITE ) ; hugetlb_count_add ( pages_per_huge_page ( h ) , dst_mm ) ; update_mmu_cache ( dst_vma , dst_addr , dst_pte ) ; spin_unlock ( ptl ) ; if ( vm_shared ) unlock_page ( page ) ; ret = 0 ; out : return ret ; out_release_unlock : spin_unlock ( ptl ) ; <S2SV_StartBug> out_release_nounlock : <S2SV_EndBug> if ( vm_shared ) unlock_page ( page ) ; put_page ( page ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptl ) ; if ( vm_shared ) unlock_page ( page ) ; out_release_nounlock : <S2SV_ModEnd> put_page ( page\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9588\n\n```\nCWE-388 static int handle_exception ( struct kvm_vcpu * vcpu ) { struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; struct kvm_run * kvm_run = vcpu -> run ; u32 intr_info , ex_no , error_code ; unsigned long cr2 , rip , dr6 ; u32 vect_info ; enum emulation_result er ; vect_info = vmx -> idt_vectoring_info ; intr_info = vmx -> exit_intr_info ; if ( is_machine_check ( intr_info ) ) return handle_machine_check ( vcpu ) ; <S2SV_StartBug> if ( ( intr_info & INTR_INFO_INTR_TYPE_MASK ) == INTR_TYPE_NMI_INTR ) <S2SV_EndBug> return 1 ; if ( is_no_device ( intr_info ) ) { vmx_fpu_activate ( vcpu ) ; return 1 ; } if ( is_invalid_opcode ( intr_info ) ) { if ( is_guest_mode ( vcpu ) ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } er = emulate_instruction ( vcpu , EMULTYPE_TRAP_UD ) ; if ( er != EMULATE_DONE ) kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } error_code = 0 ; if ( intr_info & INTR_INFO_DELIVER_CODE_MASK ) error_code = vmcs_read32 ( VM_EXIT_INTR_ERROR_CODE ) ; if ( ( vect_info & VECTORING_INFO_VALID_MASK ) && ! ( is_page_fault ( intr_info ) && ! ( error_code & PFERR_RSVD_MASK ) ) ) { vcpu -> run -> exit_reason = KVM_EXIT_INTERNAL_ERROR ; vcpu -> run -> internal . suberror = KVM_INTERNAL_ERROR_SIMUL_EX ; vcpu -> run -> internal . ndata = 3 ; vcpu -> run -> internal . data [ 0 ] = vect_info ; vcpu -> run -> internal . data [ 1 ] = intr_info ; vcpu -> run -> internal . data [ 2 ] = error_code ; return 0 ; } if ( is_page_fault ( intr_info ) ) { BUG_ON ( enable_ept ) ; cr2 = vmcs_readl ( EXIT_QUALIFICATION ) ; trace_kvm_page_fault ( cr2 , error_code ) ; if ( kvm_event_needs_reinjection ( vcpu ) ) kvm_mmu_unprotect_page_virt ( vcpu , cr2 ) ; return kvm_mmu_page_fault ( vcpu , cr2 , error_code , NULL , 0 ) ; } ex_no = intr_info & INTR_INFO_VECTOR_MASK ; if ( vmx -> rmode . vm86_active && rmode_exception ( vcpu , ex_no ) ) return handle_rmode_exception ( vcpu , ex_no , error_code ) ; switch ( ex_no ) { case AC_VECTOR : kvm_queue_exception_e ( vcpu , AC_VECTOR , error_code ) ; return 1 ; case DB_VECTOR : dr6 = vmcs_readl ( EXIT_QUALIFICATION ) ; if ( ! ( vcpu -> guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) ) { vcpu -> arch . dr6 &= ~ 15 ; vcpu -> arch . dr6 |= dr6 | DR6_RTM ; if ( ! ( dr6 & ~ DR6_RESERVED ) ) skip_emulated_instruction ( vcpu ) ; kvm_queue_exception ( vcpu , DB_VECTOR ) ; return 1 ; } kvm_run -> debug . arch . dr6 = dr6 | DR6_FIXED_1 ; kvm_run -> debug . arch . dr7 = vmcs_readl ( GUEST_DR7 ) ; case BP_VECTOR : vmx -> vcpu . arch . event_exit_inst_len = vmcs_read32 ( VM_EXIT_INSTRUCTION_LEN ) ; kvm_run -> exit_reason = KVM_EXIT_DEBUG ; rip = kvm_rip_read ( vcpu ) ; kvm_run -> debug . arch . pc = vmcs_readl ( GUEST_CS_BASE ) + rip ; kvm_run -> debug . arch . exception = ex_no ; break ; default : kvm_run -> exit_reason = KVM_EXIT_EXCEPTION ; kvm_run -> ex . exception = ex_no ; kvm_run -> ex . error_code = error_code ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( is_nmi ( intr_info ) <S2SV_ModEnd> ) return 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20840\n\n```\nCWE-119 static int hybiReadAndDecode ( ws_ctx_t * wsctx , char * dst , int len , int * sockRet , int nInBuf ) { int n ; int i ; int toReturn ; int toDecode ; int bufsize ; int nextRead ; <S2SV_StartBug> unsigned char * data ; <S2SV_EndBug> uint32_t * data32 ; memcpy ( wsctx -> writePos , wsctx -> carryBuf , wsctx -> carrylen ) ; wsctx -> writePos += wsctx -> carrylen ; bufsize = wsctx -> codeBufDecode + ARRAYSIZE ( wsctx -> codeBufDecode ) - wsctx -> writePos - 1 ; ws_dbg ( \"bufsize=%d\\\\n\" , bufsize ) ; if ( hybiRemaining ( wsctx ) > bufsize ) { nextRead = bufsize ; } else { nextRead = hybiRemaining ( wsctx ) ; } ws_dbg ( \"calling<S2SV_blank>read<S2SV_blank>with<S2SV_blank>buf=%p<S2SV_blank>and<S2SV_blank>len=%d<S2SV_blank>(decodebuf=%p<S2SV_blank>headerLen=%d)\\\\n\" , wsctx -> writePos , nextRead , wsctx -> codeBufDecode , wsctx -> header . headerLen ) ; if ( nextRead > 0 ) { if ( - 1 == ( n = wsctx -> ctxInfo . readFunc ( wsctx -> ctxInfo . ctxPtr , wsctx -> writePos , nextRead ) ) ) { int olderrno = errno ; rfbErr ( \"%s:<S2SV_blank>read;<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; errno = olderrno ; * sockRet = - 1 ; return WS_HYBI_STATE_ERR ; } else if ( n == 0 ) { * sockRet = 0 ; return WS_HYBI_STATE_ERR ; } else { ws_dbg ( \"read<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>from<S2SV_blank>socket;<S2SV_blank>nRead=%d\\\\n\" , n , wsctx -> nReadPayload ) ; } } else { n = 0 ; } wsctx -> nReadPayload += n ; wsctx -> writePos += n ; if ( hybiRemaining ( wsctx ) == 0 ) { wsctx -> hybiDecodeState = WS_HYBI_STATE_FRAME_COMPLETE ; } toDecode = n + wsctx -> carrylen + nInBuf ; ws_dbg ( \"toDecode=%d<S2SV_blank>from<S2SV_blank>n=%d<S2SV_blank>carrylen=%d<S2SV_blank>headerLen=%d\\\\n\" , toDecode , n , wsctx -> carrylen , wsctx -> header . headerLen ) ; if ( toDecode < 0 ) { rfbErr ( \"%s:<S2SV_blank>internal<S2SV_blank>error;<S2SV_blank>negative<S2SV_blank>number<S2SV_blank>of<S2SV_blank>bytes<S2SV_blank>to<S2SV_blank>decode:<S2SV_blank>%d\" , __func__ , toDecode ) ; errno = EIO ; * sockRet = - 1 ; return WS_HYBI_STATE_ERR ; } data = ( unsigned char * ) ( wsctx -> writePos - toDecode ) ; <S2SV_StartBug> data32 = ( uint32_t * ) data ; <S2SV_EndBug> for ( i = 0 ; i < ( toDecode >> 2 ) ; i ++ ) { <S2SV_StartBug> data32 [ i ] ^= wsctx -> header . mask . u ; <S2SV_EndBug> } ws_dbg ( \"mask<S2SV_blank>decoding;<S2SV_blank>i=%d<S2SV_blank>toDecode=%d\\\\n\" , i , toDecode ) ; if ( wsctx -> hybiDecodeState == WS_HYBI_STATE_FRAME_COMPLETE ) { for ( i *= 4 ; i < toDecode ; i ++ ) { data [ i ] ^= wsctx -> header . mask . c [ i % 4 ] ; } wsctx -> carrylen = 0 ; } else { wsctx -> carrylen = toDecode - ( i * 4 ) ; if ( wsctx -> carrylen < 0 || wsctx -> carrylen > ARRAYSIZE ( wsctx -> carryBuf ) ) { rfbErr ( \"%s:<S2SV_blank>internal<S2SV_blank>error,<S2SV_blank>invalid<S2SV_blank>carry<S2SV_blank>over<S2SV_blank>size:<S2SV_blank>carrylen=%d,<S2SV_blank>toDecode=%d,<S2SV_blank>i=%d\" , __func__ , wsctx -> carrylen , toDecode , i ) ; * sockRet = - 1 ; errno = EIO ; return WS_HYBI_STATE_ERR ; } ws_dbg ( \"carrying<S2SV_blank>over<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>from<S2SV_blank>%p<S2SV_blank>to<S2SV_blank>%p\\\\n\" , wsctx -> carrylen , wsctx -> writePos + ( i * 4 ) , wsctx -> carryBuf ) ; memcpy ( wsctx -> carryBuf , data + ( i * 4 ) , wsctx -> carrylen ) ; wsctx -> writePos -= wsctx -> carrylen ; } toReturn = toDecode - wsctx -> carrylen ; switch ( wsctx -> header . opcode ) { case WS_OPCODE_CLOSE : if ( hybiWsFrameComplete ( wsctx ) ) { * ( wsctx -> writePos ) = '\\\\0' ; ws_dbg ( \"got<S2SV_blank>close<S2SV_blank>cmd<S2SV_blank>%d,<S2SV_blank>reason<S2SV_blank>%d:<S2SV_blank>%s\\\\n\" , ( int ) ( wsctx -> writePos - hybiPayloadStart ( wsctx ) ) , WS_NTOH16 ( ( ( uint16_t * ) hybiPayloadStart ( wsctx ) ) [ 0 ] ) , & hybiPayloadStart ( wsctx ) [ 2 ] ) ; errno = ECONNRESET ; * sockRet = - 1 ; return WS_HYBI_STATE_FRAME_COMPLETE ; } else { ws_dbg ( \"got<S2SV_blank>close<S2SV_blank>cmd;<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>more<S2SV_blank>bytes<S2SV_blank>to<S2SV_blank>arrive\\\\n\" , hybiRemaining ( wsctx ) ) ; * sockRet = - 1 ; errno = EAGAIN ; return WS_HYBI_STATE_CLOSE_REASON_PENDING ; } break ; case WS_OPCODE_TEXT_FRAME : data [ toReturn ] = '\\\\0' ; ws_dbg ( \"Initiate<S2SV_blank>Base64<S2SV_blank>decoding<S2SV_blank>in<S2SV_blank>%p<S2SV_blank>with<S2SV_blank>max<S2SV_blank>size<S2SV_blank>%d<S2SV_blank>and<S2SV_blank>\\'\\\\\\\\0\\'<S2SV_blank>at<S2SV_blank>%p\\\\n\" , data , bufsize , data + toReturn ) ; if ( - 1 == ( wsctx -> readlen = rfbBase64PtoN ( ( char * ) data , data , bufsize ) ) ) { rfbErr ( \"%s:<S2SV_blank>Base64<S2SV_blank>decode<S2SV_blank>error;<S2SV_blank>%s\\\\n\" , __func__ , strerror ( errno ) ) ; } wsctx -> writePos = hybiPayloadStart ( wsctx ) ; break ; case WS_OPCODE_BINARY_FRAME : wsctx -> readlen = toReturn ; wsctx -> writePos = hybiPayloadStart ( wsctx ) ; ws_dbg ( \"set<S2SV_blank>readlen=%d<S2SV_blank>writePos=%p\\\\n\" , wsctx -> readlen , wsctx -> writePos ) ; break ; default : rfbErr ( \"%s:<S2SV_blank>unhandled<S2SV_blank>opcode<S2SV_blank>%d,<S2SV_blank>b0:<S2SV_blank>%02x,<S2SV_blank>b1:<S2SV_blank>%02x\\\\n\" , __func__ , ( int ) wsctx -> header . opcode , wsctx -> header . data -> b0 , wsctx -> header . data -> b1 ) ; } wsctx -> readPos = data ; return hybiReturnData ( dst , len , wsctx , sockRet ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * data <S2SV_ModEnd> ; memcpy ( <S2SV_ModStart> toDecode ) ; <S2SV_ModEnd> for ( i <S2SV_ModStart> ++ ) { uint32_t tmp ; memcpy ( & tmp , data + i * sizeof ( tmp ) , sizeof ( tmp ) ) ; tmp <S2SV_ModEnd> ^= wsctx -> <S2SV_ModStart> mask . u ; memcpy ( data + i * sizeof ( tmp ) , & tmp , sizeof ( tmp ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10044\n\n```\nCWE-264 static struct dentry * aio_mount ( struct file_system_type * fs_type , int flags , const char * dev_name , void * data ) { static const struct dentry_operations ops = { . d_dname = simple_dname , } ; <S2SV_StartBug> return mount_pseudo ( fs_type , \"aio:\" , NULL , & ops , AIO_RING_MAGIC ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , } ; struct dentry * root = <S2SV_ModEnd> mount_pseudo ( fs_type <S2SV_ModStart> AIO_RING_MAGIC ) ; if ( ! IS_ERR ( root ) ) root -> d_sb -> s_iflags |= SB_I_NOEXEC ; return root ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 void rose_write_internal ( struct sock * sk , int frametype ) { struct rose_sock * rose = rose_sk ( sk ) ; struct sk_buff * skb ; unsigned char * dptr ; unsigned char lci1 , lci2 ; char buffer [ 100 ] ; int len , faclen = 0 ; len = AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN + 1 ; switch ( frametype ) { case ROSE_CALL_REQUEST : len += 1 + ROSE_ADDR_LEN + ROSE_ADDR_LEN ; faclen = rose_create_facilities ( buffer , rose ) ; len += faclen ; break ; case ROSE_CALL_ACCEPTED : case ROSE_CLEAR_REQUEST : case ROSE_RESET_REQUEST : len += 2 ; break ; } if ( ( skb = alloc_skb ( len , GFP_ATOMIC ) ) == NULL ) return ; skb_reserve ( skb , AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + 1 ) ; dptr = skb_put ( skb , skb_tailroom ( skb ) ) ; lci1 = ( rose -> lci >> 8 ) & 0x0F ; lci2 = ( rose -> lci >> 0 ) & 0xFF ; switch ( frametype ) { case ROSE_CALL_REQUEST : * dptr ++ = ROSE_GFI | lci1 ; * dptr ++ = lci2 ; * dptr ++ = frametype ; <S2SV_StartBug> * dptr ++ = 0xAA ; <S2SV_EndBug> memcpy ( dptr , & rose -> dest_addr , ROSE_ADDR_LEN ) ; dptr += ROSE_ADDR_LEN ; memcpy ( dptr , & rose -> source_addr , ROSE_ADDR_LEN ) ; dptr += ROSE_ADDR_LEN ; memcpy ( dptr , buffer , faclen ) ; dptr += faclen ; break ; case ROSE_CALL_ACCEPTED : * dptr ++ = ROSE_GFI | lci1 ; * dptr ++ = lci2 ; * dptr ++ = frametype ; * dptr ++ = 0x00 ; * dptr ++ = 0 ; break ; case ROSE_CLEAR_REQUEST : * dptr ++ = ROSE_GFI | lci1 ; * dptr ++ = lci2 ; * dptr ++ = frametype ; * dptr ++ = rose -> cause ; * dptr ++ = rose -> diagnostic ; break ; case ROSE_RESET_REQUEST : * dptr ++ = ROSE_GFI | lci1 ; * dptr ++ = lci2 ; * dptr ++ = frametype ; * dptr ++ = ROSE_DTE_ORIGINATED ; * dptr ++ = 0 ; break ; case ROSE_RR : case ROSE_RNR : * dptr ++ = ROSE_GFI | lci1 ; * dptr ++ = lci2 ; * dptr = frametype ; * dptr ++ |= ( rose -> vr << 5 ) & 0xE0 ; break ; case ROSE_CLEAR_CONFIRMATION : case ROSE_RESET_CONFIRMATION : * dptr ++ = ROSE_GFI | lci1 ; * dptr ++ = lci2 ; * dptr ++ = frametype ; break ; default : printk ( KERN_ERR \"ROSE:<S2SV_blank>rose_write_internal<S2SV_blank>-<S2SV_blank>invalid<S2SV_blank>frametype<S2SV_blank>%02X\\\\n\" , frametype ) ; kfree_skb ( skb ) ; return ; } rose_transmit_link ( skb , rose -> neighbour ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dptr ++ = ROSE_CALL_REQ_ADDR_LEN_VAL <S2SV_ModEnd> ; memcpy (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8176\n\n```\nCWE-119 static void dtls1_clear_queues ( SSL * s ) { pitem * item = NULL ; hm_fragment * frag = NULL ; DTLS1_RECORD_DATA * rdata ; while ( ( item = pqueue_pop ( s -> d1 -> unprocessed_rcds . q ) ) != NULL ) { rdata = ( DTLS1_RECORD_DATA * ) item -> data ; if ( rdata -> rbuf . buf ) { OPENSSL_free ( rdata -> rbuf . buf ) ; } OPENSSL_free ( item -> data ) ; pitem_free ( item ) ; } while ( ( item = pqueue_pop ( s -> d1 -> processed_rcds . q ) ) != NULL ) { rdata = ( DTLS1_RECORD_DATA * ) item -> data ; if ( rdata -> rbuf . buf ) { OPENSSL_free ( rdata -> rbuf . buf ) ; } OPENSSL_free ( item -> data ) ; pitem_free ( item ) ; } while ( ( item = pqueue_pop ( s -> d1 -> buffered_messages ) ) != NULL ) { frag = ( hm_fragment * ) item -> data ; OPENSSL_free ( frag -> fragment ) ; OPENSSL_free ( frag ) ; pitem_free ( item ) ; } while ( ( item = pqueue_pop ( s -> d1 -> sent_messages ) ) != NULL ) { frag = ( hm_fragment * ) item -> data ; OPENSSL_free ( frag -> fragment ) ; OPENSSL_free ( frag ) ; pitem_free ( item ) ; } while ( ( item = pqueue_pop ( s -> d1 -> buffered_app_data . q ) ) != NULL ) { <S2SV_StartBug> frag = ( hm_fragment * ) item -> data ; <S2SV_EndBug> OPENSSL_free ( frag -> fragment ) ; OPENSSL_free ( frag ) ; pitem_free ( item ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { rdata = ( DTLS1_RECORD_DATA * ) item -> data ; if ( rdata -> rbuf . buf ) { OPENSSL_free ( rdata -> rbuf . buf ) ; } OPENSSL_free ( item -> data <S2SV_ModEnd> ) ; pitem_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13005\n\n```\nCWE-125 static int xid_map_enter ( netdissect_options * ndo , const struct sunrpc_msg * rp , const u_char * bp ) { const struct ip * ip = NULL ; const struct ip6_hdr * ip6 = NULL ; struct xid_map_entry * xmep ; if ( ! ND_TTEST ( rp -> rm_call . cb_vers ) ) return ( 0 ) ; switch ( IP_V ( ( const struct ip * ) bp ) ) { case 4 : ip = ( const struct ip * ) bp ; break ; case 6 : ip6 = ( const struct ip6_hdr * ) bp ; break ; default : return ( 1 ) ; } xmep = & xid_map [ xid_map_next ] ; if ( ++ xid_map_next >= XIDMAPSIZE ) xid_map_next = 0 ; UNALIGNED_MEMCPY ( & xmep -> xid , & rp -> rm_xid , sizeof ( xmep -> xid ) ) ; if ( ip ) { xmep -> ipver = 4 ; UNALIGNED_MEMCPY ( & xmep -> client , & ip -> ip_src , sizeof ( ip -> ip_src ) ) ; UNALIGNED_MEMCPY ( & xmep -> server , & ip -> ip_dst , sizeof ( ip -> ip_dst ) ) ; } else if ( ip6 ) { xmep -> ipver = 6 ; UNALIGNED_MEMCPY ( & xmep -> client , & ip6 -> ip6_src , sizeof ( ip6 -> ip6_src ) ) ; UNALIGNED_MEMCPY ( & xmep -> server , & ip6 -> ip6_dst , sizeof ( ip6 -> ip6_dst ) ) ; } <S2SV_StartBug> xmep -> proc = EXTRACT_32BITS ( & rp -> rm_call . cb_proc ) ; <S2SV_EndBug> xmep -> vers = EXTRACT_32BITS ( & rp -> rm_call . cb_vers ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( ! ND_TTEST ( rp -> rm_call . cb_proc ) ) return ( 0 ) ; <S2SV_ModStart> rm_call . cb_proc ) ; if ( ! ND_TTEST ( rp -> rm_call . cb_vers ) ) return ( 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12154\n\n```\nCWE-000 static int prepare_vmcs02 ( struct kvm_vcpu * vcpu , struct vmcs12 * vmcs12 , bool from_vmentry , u32 * entry_failure_code ) { struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; u32 exec_control , vmcs12_exec_ctrl ; vmcs_write16 ( GUEST_ES_SELECTOR , vmcs12 -> guest_es_selector ) ; vmcs_write16 ( GUEST_CS_SELECTOR , vmcs12 -> guest_cs_selector ) ; vmcs_write16 ( GUEST_SS_SELECTOR , vmcs12 -> guest_ss_selector ) ; vmcs_write16 ( GUEST_DS_SELECTOR , vmcs12 -> guest_ds_selector ) ; vmcs_write16 ( GUEST_FS_SELECTOR , vmcs12 -> guest_fs_selector ) ; vmcs_write16 ( GUEST_GS_SELECTOR , vmcs12 -> guest_gs_selector ) ; vmcs_write16 ( GUEST_LDTR_SELECTOR , vmcs12 -> guest_ldtr_selector ) ; vmcs_write16 ( GUEST_TR_SELECTOR , vmcs12 -> guest_tr_selector ) ; vmcs_write32 ( GUEST_ES_LIMIT , vmcs12 -> guest_es_limit ) ; vmcs_write32 ( GUEST_CS_LIMIT , vmcs12 -> guest_cs_limit ) ; vmcs_write32 ( GUEST_SS_LIMIT , vmcs12 -> guest_ss_limit ) ; vmcs_write32 ( GUEST_DS_LIMIT , vmcs12 -> guest_ds_limit ) ; vmcs_write32 ( GUEST_FS_LIMIT , vmcs12 -> guest_fs_limit ) ; vmcs_write32 ( GUEST_GS_LIMIT , vmcs12 -> guest_gs_limit ) ; vmcs_write32 ( GUEST_LDTR_LIMIT , vmcs12 -> guest_ldtr_limit ) ; vmcs_write32 ( GUEST_TR_LIMIT , vmcs12 -> guest_tr_limit ) ; vmcs_write32 ( GUEST_GDTR_LIMIT , vmcs12 -> guest_gdtr_limit ) ; vmcs_write32 ( GUEST_IDTR_LIMIT , vmcs12 -> guest_idtr_limit ) ; vmcs_write32 ( GUEST_ES_AR_BYTES , vmcs12 -> guest_es_ar_bytes ) ; vmcs_write32 ( GUEST_CS_AR_BYTES , vmcs12 -> guest_cs_ar_bytes ) ; vmcs_write32 ( GUEST_SS_AR_BYTES , vmcs12 -> guest_ss_ar_bytes ) ; vmcs_write32 ( GUEST_DS_AR_BYTES , vmcs12 -> guest_ds_ar_bytes ) ; vmcs_write32 ( GUEST_FS_AR_BYTES , vmcs12 -> guest_fs_ar_bytes ) ; vmcs_write32 ( GUEST_GS_AR_BYTES , vmcs12 -> guest_gs_ar_bytes ) ; vmcs_write32 ( GUEST_LDTR_AR_BYTES , vmcs12 -> guest_ldtr_ar_bytes ) ; vmcs_write32 ( GUEST_TR_AR_BYTES , vmcs12 -> guest_tr_ar_bytes ) ; vmcs_writel ( GUEST_ES_BASE , vmcs12 -> guest_es_base ) ; vmcs_writel ( GUEST_CS_BASE , vmcs12 -> guest_cs_base ) ; vmcs_writel ( GUEST_SS_BASE , vmcs12 -> guest_ss_base ) ; vmcs_writel ( GUEST_DS_BASE , vmcs12 -> guest_ds_base ) ; vmcs_writel ( GUEST_FS_BASE , vmcs12 -> guest_fs_base ) ; vmcs_writel ( GUEST_GS_BASE , vmcs12 -> guest_gs_base ) ; vmcs_writel ( GUEST_LDTR_BASE , vmcs12 -> guest_ldtr_base ) ; vmcs_writel ( GUEST_TR_BASE , vmcs12 -> guest_tr_base ) ; vmcs_writel ( GUEST_GDTR_BASE , vmcs12 -> guest_gdtr_base ) ; vmcs_writel ( GUEST_IDTR_BASE , vmcs12 -> guest_idtr_base ) ; if ( from_vmentry && ( vmcs12 -> vm_entry_controls & VM_ENTRY_LOAD_DEBUG_CONTROLS ) ) { kvm_set_dr ( vcpu , 7 , vmcs12 -> guest_dr7 ) ; vmcs_write64 ( GUEST_IA32_DEBUGCTL , vmcs12 -> guest_ia32_debugctl ) ; } else { kvm_set_dr ( vcpu , 7 , vcpu -> arch . dr7 ) ; vmcs_write64 ( GUEST_IA32_DEBUGCTL , vmx -> nested . vmcs01_debugctl ) ; } if ( from_vmentry ) { vmcs_write32 ( VM_ENTRY_INTR_INFO_FIELD , vmcs12 -> vm_entry_intr_info_field ) ; vmcs_write32 ( VM_ENTRY_EXCEPTION_ERROR_CODE , vmcs12 -> vm_entry_exception_error_code ) ; vmcs_write32 ( VM_ENTRY_INSTRUCTION_LEN , vmcs12 -> vm_entry_instruction_len ) ; vmcs_write32 ( GUEST_INTERRUPTIBILITY_INFO , vmcs12 -> guest_interruptibility_info ) ; vmx -> loaded_vmcs -> nmi_known_unmasked = ! ( vmcs12 -> guest_interruptibility_info & GUEST_INTR_STATE_NMI ) ; } else { vmcs_write32 ( VM_ENTRY_INTR_INFO_FIELD , 0 ) ; } vmcs_write32 ( GUEST_SYSENTER_CS , vmcs12 -> guest_sysenter_cs ) ; vmx_set_rflags ( vcpu , vmcs12 -> guest_rflags ) ; vmcs_writel ( GUEST_PENDING_DBG_EXCEPTIONS , vmcs12 -> guest_pending_dbg_exceptions ) ; vmcs_writel ( GUEST_SYSENTER_ESP , vmcs12 -> guest_sysenter_esp ) ; vmcs_writel ( GUEST_SYSENTER_EIP , vmcs12 -> guest_sysenter_eip ) ; if ( nested_cpu_has_xsaves ( vmcs12 ) ) vmcs_write64 ( XSS_EXIT_BITMAP , vmcs12 -> xss_exit_bitmap ) ; vmcs_write64 ( VMCS_LINK_POINTER , - 1ull ) ; exec_control = vmcs12 -> pin_based_vm_exec_control ; exec_control &= ~ PIN_BASED_VMX_PREEMPTION_TIMER ; exec_control |= vmcs_config . pin_based_exec_ctrl ; if ( vmx -> hv_deadline_tsc == - 1 ) exec_control &= ~ PIN_BASED_VMX_PREEMPTION_TIMER ; if ( nested_cpu_has_posted_intr ( vmcs12 ) ) { vmx -> nested . posted_intr_nv = vmcs12 -> posted_intr_nv ; vmx -> nested . pi_pending = false ; vmcs_write16 ( POSTED_INTR_NV , POSTED_INTR_NESTED_VECTOR ) ; } else { exec_control &= ~ PIN_BASED_POSTED_INTR ; } vmcs_write32 ( PIN_BASED_VM_EXEC_CONTROL , exec_control ) ; vmx -> nested . preemption_timer_expired = false ; if ( nested_cpu_has_preemption_timer ( vmcs12 ) ) vmx_start_preemption_timer ( vcpu ) ; vmcs_write32 ( PAGE_FAULT_ERROR_CODE_MASK , enable_ept ? vmcs12 -> page_fault_error_code_mask : 0 ) ; vmcs_write32 ( PAGE_FAULT_ERROR_CODE_MATCH , enable_ept ? vmcs12 -> page_fault_error_code_match : 0 ) ; if ( cpu_has_secondary_exec_ctrls ( ) ) { exec_control = vmx -> secondary_exec_control ; exec_control &= ~ ( SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | SECONDARY_EXEC_ENABLE_INVPCID | SECONDARY_EXEC_RDTSCP | SECONDARY_EXEC_XSAVES | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY | SECONDARY_EXEC_APIC_REGISTER_VIRT | SECONDARY_EXEC_ENABLE_VMFUNC ) ; if ( nested_cpu_has ( vmcs12 , CPU_BASED_ACTIVATE_SECONDARY_CONTROLS ) ) { vmcs12_exec_ctrl = vmcs12 -> secondary_vm_exec_control & ~ SECONDARY_EXEC_ENABLE_PML ; exec_control |= vmcs12_exec_ctrl ; } if ( exec_control & SECONDARY_EXEC_ENABLE_VMFUNC ) vmcs_write64 ( VM_FUNCTION_CONTROL , 0 ) ; if ( exec_control & SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY ) { vmcs_write64 ( EOI_EXIT_BITMAP0 , vmcs12 -> eoi_exit_bitmap0 ) ; vmcs_write64 ( EOI_EXIT_BITMAP1 , vmcs12 -> eoi_exit_bitmap1 ) ; vmcs_write64 ( EOI_EXIT_BITMAP2 , vmcs12 -> eoi_exit_bitmap2 ) ; vmcs_write64 ( EOI_EXIT_BITMAP3 , vmcs12 -> eoi_exit_bitmap3 ) ; vmcs_write16 ( GUEST_INTR_STATUS , vmcs12 -> guest_intr_status ) ; } if ( exec_control & SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES ) vmcs_write64 ( APIC_ACCESS_ADDR , - 1ull ) ; vmcs_write32 ( SECONDARY_VM_EXEC_CONTROL , exec_control ) ; } vmx_set_constant_host_state ( vmx ) ; vmcs_write32 ( VM_EXIT_MSR_STORE_COUNT , 0 ) ; vmcs_write32 ( VM_EXIT_MSR_LOAD_COUNT , vmx -> msr_autoload . nr ) ; vmcs_write64 ( VM_EXIT_MSR_LOAD_ADDR , __pa ( vmx -> msr_autoload . host ) ) ; vmcs_write32 ( VM_ENTRY_MSR_LOAD_COUNT , vmx -> msr_autoload . nr ) ; vmcs_write64 ( VM_ENTRY_MSR_LOAD_ADDR , __pa ( vmx -> msr_autoload . guest ) ) ; vmx -> host_rsp = 0 ; exec_control = vmx_exec_control ( vmx ) ; exec_control &= ~ CPU_BASED_VIRTUAL_INTR_PENDING ; exec_control &= ~ CPU_BASED_VIRTUAL_NMI_PENDING ; exec_control &= ~ CPU_BASED_TPR_SHADOW ; exec_control |= vmcs12 -> cpu_based_vm_exec_control ; if ( exec_control & CPU_BASED_TPR_SHADOW ) { vmcs_write64 ( VIRTUAL_APIC_PAGE_ADDR , - 1ull ) ; <S2SV_StartBug> vmcs_write32 ( TPR_THRESHOLD , vmcs12 -> tpr_threshold ) ; <S2SV_EndBug> } exec_control &= ~ CPU_BASED_USE_IO_BITMAPS ; exec_control |= CPU_BASED_UNCOND_IO_EXITING ; vmcs_write32 ( CPU_BASED_VM_EXEC_CONTROL , exec_control ) ; update_exception_bitmap ( vcpu ) ; vcpu -> arch . cr0_guest_owned_bits &= ~ vmcs12 -> cr0_guest_host_mask ; vmcs_writel ( CR0_GUEST_HOST_MASK , ~ vcpu -> arch . cr0_guest_owned_bits ) ; vmcs_write32 ( VM_EXIT_CONTROLS , vmcs_config . vmexit_ctrl ) ; vm_entry_controls_init ( vmx , ( vmcs12 -> vm_entry_controls & ~ VM_ENTRY_LOAD_IA32_EFER & ~ VM_ENTRY_IA32E_MODE ) | ( vmcs_config . vmentry_ctrl & ~ VM_ENTRY_IA32E_MODE ) ) ; if ( from_vmentry && ( vmcs12 -> vm_entry_controls & VM_ENTRY_LOAD_IA32_PAT ) ) { vmcs_write64 ( GUEST_IA32_PAT , vmcs12 -> guest_ia32_pat ) ; vcpu -> arch . pat = vmcs12 -> guest_ia32_pat ; } else if ( vmcs_config . vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT ) { vmcs_write64 ( GUEST_IA32_PAT , vmx -> vcpu . arch . pat ) ; } set_cr4_guest_host_mask ( vmx ) ; if ( from_vmentry && vmcs12 -> vm_entry_controls & VM_ENTRY_LOAD_BNDCFGS ) vmcs_write64 ( GUEST_BNDCFGS , vmcs12 -> guest_bndcfgs ) ; if ( vmcs12 -> cpu_based_vm_exec_control & CPU_BASED_USE_TSC_OFFSETING ) vmcs_write64 ( TSC_OFFSET , vcpu -> arch . tsc_offset + vmcs12 -> tsc_offset ) ; else vmcs_write64 ( TSC_OFFSET , vcpu -> arch . tsc_offset ) ; if ( kvm_has_tsc_control ) decache_tsc_multiplier ( vmx ) ; if ( enable_vpid ) { if ( nested_cpu_has_vpid ( vmcs12 ) && vmx -> nested . vpid02 ) { vmcs_write16 ( VIRTUAL_PROCESSOR_ID , vmx -> nested . vpid02 ) ; if ( vmcs12 -> virtual_processor_id != vmx -> nested . last_vpid ) { vmx -> nested . last_vpid = vmcs12 -> virtual_processor_id ; __vmx_flush_tlb ( vcpu , to_vmx ( vcpu ) -> nested . vpid02 ) ; } } else { vmcs_write16 ( VIRTUAL_PROCESSOR_ID , vmx -> vpid ) ; vmx_flush_tlb ( vcpu ) ; } } if ( enable_pml ) { ASSERT ( vmx -> pml_pg ) ; vmcs_write64 ( PML_ADDRESS , page_to_phys ( vmx -> pml_pg ) ) ; vmcs_write16 ( GUEST_PML_INDEX , PML_ENTITY_NUM - 1 ) ; } if ( nested_cpu_has_ept ( vmcs12 ) ) { if ( nested_ept_init_mmu_context ( vcpu ) ) { * entry_failure_code = ENTRY_FAIL_DEFAULT ; return 1 ; } } else if ( nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES ) ) { vmx_flush_tlb_ept_only ( vcpu ) ; } vmx_set_cr0 ( vcpu , vmcs12 -> guest_cr0 ) ; vmcs_writel ( CR0_READ_SHADOW , nested_read_cr0 ( vmcs12 ) ) ; vmx_set_cr4 ( vcpu , vmcs12 -> guest_cr4 ) ; vmcs_writel ( CR4_READ_SHADOW , nested_read_cr4 ( vmcs12 ) ) ; if ( from_vmentry && ( vmcs12 -> vm_entry_controls & VM_ENTRY_LOAD_IA32_EFER ) ) vcpu -> arch . efer = vmcs12 -> guest_ia32_efer ; else if ( vmcs12 -> vm_entry_controls & VM_ENTRY_IA32E_MODE ) vcpu -> arch . efer |= ( EFER_LMA | EFER_LME ) ; else vcpu -> arch . efer &= ~ ( EFER_LMA | EFER_LME ) ; vmx_set_efer ( vcpu , vcpu -> arch . efer ) ; if ( nested_vmx_load_cr3 ( vcpu , vmcs12 -> guest_cr3 , nested_cpu_has_ept ( vmcs12 ) , entry_failure_code ) ) return 1 ; if ( ! enable_ept ) vcpu -> arch . walk_mmu -> inject_page_fault = vmx_inject_page_fault_nested ; if ( enable_ept ) { vmcs_write64 ( GUEST_PDPTR0 , vmcs12 -> guest_pdptr0 ) ; vmcs_write64 ( GUEST_PDPTR1 , vmcs12 -> guest_pdptr1 ) ; vmcs_write64 ( GUEST_PDPTR2 , vmcs12 -> guest_pdptr2 ) ; vmcs_write64 ( GUEST_PDPTR3 , vmcs12 -> guest_pdptr3 ) ; } kvm_register_write ( vcpu , VCPU_REGS_RSP , vmcs12 -> guest_rsp ) ; kvm_register_write ( vcpu , VCPU_REGS_RIP , vmcs12 -> guest_rip ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tpr_threshold ) ; } else { # ifdef CONFIG_X86_64 exec_control |= CPU_BASED_CR8_LOAD_EXITING | CPU_BASED_CR8_STORE_EXITING ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1065\n\n```\nCWE-476 unsigned int ipt_do_table ( struct sk_buff * skb , const struct nf_hook_state * state , struct xt_table * table ) { unsigned int hook = state -> hook ; static const char nulldevname [ IFNAMSIZ ] __attribute__ ( ( aligned ( sizeof ( long ) ) ) ) ; const struct iphdr * ip ; unsigned int verdict = NF_DROP ; const char * indev , * outdev ; const void * table_base ; struct ipt_entry * e , * * jumpstack ; unsigned int stackidx , cpu ; const struct xt_table_info * private ; struct xt_action_param acpar ; unsigned int addend ; stackidx = 0 ; ip = ip_hdr ( skb ) ; indev = state -> in ? state -> in -> name : nulldevname ; outdev = state -> out ? state -> out -> name : nulldevname ; acpar . fragoff = ntohs ( ip -> frag_off ) & IP_OFFSET ; acpar . thoff = ip_hdrlen ( skb ) ; acpar . hotdrop = false ; acpar . state = state ; WARN_ON ( ! ( table -> valid_hooks & ( 1 << hook ) ) ) ; local_bh_disable ( ) ; addend = xt_write_recseq_begin ( ) ; private = READ_ONCE ( table -> private ) ; cpu = smp_processor_id ( ) ; table_base = private -> entries ; jumpstack = ( struct ipt_entry * * ) private -> jumpstack [ cpu ] ; if ( static_key_false ( & xt_tee_enabled ) ) jumpstack += private -> stacksize * __this_cpu_read ( nf_skb_duplicated ) ; e = get_entry ( table_base , private -> hook_entry [ hook ] ) ; do { const struct xt_entry_target * t ; const struct xt_entry_match * ematch ; struct xt_counters * counter ; WARN_ON ( ! e ) ; if ( ! ip_packet_match ( ip , indev , outdev , & e -> ip , acpar . fragoff ) ) { no_match : e = ipt_next_entry ( e ) ; continue ; } xt_ematch_foreach ( ematch , e ) { acpar . match = ematch -> u . kernel . match ; acpar . matchinfo = ematch -> data ; if ( ! acpar . match -> match ( skb , & acpar ) ) goto no_match ; } counter = xt_get_this_cpu_counter ( & e -> counters ) ; ADD_COUNTER ( * counter , skb -> len , 1 ) ; t = ipt_get_target ( e ) ; WARN_ON ( ! t -> u . kernel . target ) ; # if IS_ENABLED ( CONFIG_NETFILTER_XT_TARGET_TRACE ) if ( unlikely ( skb -> nf_trace ) ) trace_packet ( state -> net , skb , hook , state -> in , state -> out , table -> name , private , e ) ; # endif if ( ! t -> u . kernel . target -> target ) { int v ; v = ( ( struct xt_standard_target * ) t ) -> verdict ; if ( v < 0 ) { if ( v != XT_RETURN ) { verdict = ( unsigned int ) ( - v ) - 1 ; break ; } if ( stackidx == 0 ) { e = get_entry ( table_base , private -> underflow [ hook ] ) ; } else { e = jumpstack [ -- stackidx ] ; e = ipt_next_entry ( e ) ; } continue ; } if ( table_base + v != ipt_next_entry ( e ) && <S2SV_StartBug> ! ( e -> ip . flags & IPT_F_GOTO ) ) <S2SV_EndBug> jumpstack [ stackidx ++ ] = e ; <S2SV_StartBug> e = get_entry ( table_base , v ) ; <S2SV_EndBug> continue ; } acpar . target = t -> u . kernel . target ; acpar . targinfo = t -> data ; verdict = t -> u . kernel . target -> target ( skb , & acpar ) ; if ( verdict == XT_CONTINUE ) { ip = ip_hdr ( skb ) ; e = ipt_next_entry ( e ) ; } else { break ; } } while ( ! acpar . hotdrop ) ; xt_write_recseq_end ( addend ) ; local_bh_enable ( ) ; if ( acpar . hotdrop ) return NF_DROP ; else return verdict ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IPT_F_GOTO ) ) { if ( unlikely ( stackidx >= private -> stacksize ) ) { verdict = NF_DROP ; break ; } <S2SV_ModStart> = e ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 SQLITE_PRIVATE int sqlite3VdbeSorterWrite ( const VdbeCursor * pCsr , Mem * pVal ) { VdbeSorter * pSorter ; int rc = SQLITE_OK ; SorterRecord * pNew ; int bFlush ; int nReq ; int nPMA ; int t ; assert ( pCsr -> eCurType == CURTYPE_SORTER ) ; pSorter = pCsr -> uc . pSorter ; getVarint32 ( ( const u8 * ) & pVal -> z [ 1 ] , t ) ; if ( t > 0 && t < 10 && t != 7 ) { pSorter -> typeMask &= SORTER_TYPE_INTEGER ; } else if ( t > 10 && ( t & 0x01 ) ) { pSorter -> typeMask &= SORTER_TYPE_TEXT ; } else { pSorter -> typeMask = 0 ; } assert ( pSorter ) ; nReq = pVal -> n + sizeof ( SorterRecord ) ; nPMA = pVal -> n + sqlite3VarintLen ( pVal -> n ) ; if ( pSorter -> mxPmaSize ) { if ( pSorter -> list . aMemory ) { bFlush = pSorter -> iMemory && ( pSorter -> iMemory + nReq ) > pSorter -> mxPmaSize ; } else { bFlush = ( ( pSorter -> list . szPMA > pSorter -> mxPmaSize ) || ( pSorter -> list . szPMA > pSorter -> mnPmaSize && sqlite3HeapNearlyFull ( ) ) ) ; } if ( bFlush ) { rc = vdbeSorterFlushPMA ( pSorter ) ; pSorter -> list . szPMA = 0 ; pSorter -> iMemory = 0 ; assert ( rc != SQLITE_OK || pSorter -> list . pList == 0 ) ; } } pSorter -> list . szPMA += nPMA ; if ( nPMA > pSorter -> mxKeysize ) { pSorter -> mxKeysize = nPMA ; } if ( pSorter -> list . aMemory ) { int nMin = pSorter -> iMemory + nReq ; if ( nMin > pSorter -> nMemory ) { u8 * aNew ; int iListOff = ( u8 * ) pSorter -> list . pList - pSorter -> list . aMemory ; <S2SV_StartBug> int nNew = pSorter -> nMemory * 2 ; <S2SV_EndBug> while ( nNew < nMin ) nNew = nNew * 2 ; if ( nNew > pSorter -> mxPmaSize ) nNew = pSorter -> mxPmaSize ; if ( nNew < nMin ) nNew = nMin ; aNew = sqlite3Realloc ( pSorter -> list . aMemory , nNew ) ; if ( ! aNew ) return SQLITE_NOMEM_BKPT ; pSorter -> list . pList = ( SorterRecord * ) & aNew [ iListOff ] ; pSorter -> list . aMemory = aNew ; pSorter -> nMemory = nNew ; } pNew = ( SorterRecord * ) & pSorter -> list . aMemory [ pSorter -> iMemory ] ; pSorter -> iMemory += ROUND8 ( nReq ) ; if ( pSorter -> list . pList ) { pNew -> u . iNext = ( int ) ( ( u8 * ) ( pSorter -> list . pList ) - pSorter -> list . aMemory ) ; } } else { pNew = ( SorterRecord * ) sqlite3Malloc ( nReq ) ; if ( pNew == 0 ) { return SQLITE_NOMEM_BKPT ; } pNew -> u . pNext = pSorter -> list . pList ; } memcpy ( SRVAL ( pNew ) , pVal -> z , pVal -> n ) ; pNew -> nVal = pVal -> n ; pSorter -> list . pList = pNew ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . aMemory ; sqlite3_int64 nNew = 2 * ( sqlite3_int64 ) <S2SV_ModEnd> pSorter -> nMemory <S2SV_ModStart> pSorter -> nMemory <S2SV_ModEnd> ; while (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13034\n\n```\nCWE-125 void pgm_print ( netdissect_options * ndo , register const u_char * bp , register u_int length , register const u_char * bp2 ) { register const struct pgm_header * pgm ; register const struct ip * ip ; register char ch ; uint16_t sport , dport ; u_int nla_afnum ; char nla_buf [ INET6_ADDRSTRLEN ] ; register const struct ip6_hdr * ip6 ; uint8_t opt_type , opt_len ; uint32_t seq , opts_len , len , offset ; pgm = ( const struct pgm_header * ) bp ; ip = ( const struct ip * ) bp2 ; if ( IP_V ( ip ) == 6 ) ip6 = ( const struct ip6_hdr * ) bp2 ; else ip6 = NULL ; ch = '\\\\0' ; if ( ! ND_TTEST ( pgm -> pgm_dport ) ) { if ( ip6 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ipaddr_string ( ndo , & ip -> ip_src ) , ipaddr_string ( ndo , & ip -> ip_dst ) ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } } sport = EXTRACT_16BITS ( & pgm -> pgm_sport ) ; dport = EXTRACT_16BITS ( & pgm -> pgm_dport ) ; if ( ip6 ) { if ( ip6 -> ip6_nxt == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , tcpport_string ( ndo , sport ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } else { if ( ip -> ip_p == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ipaddr_string ( ndo , & ip -> ip_src ) , tcpport_string ( ndo , sport ) , ipaddr_string ( ndo , & ip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } ND_TCHECK ( * pgm ) ; ND_PRINT ( ( ndo , \"PGM,<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ) ; if ( ! ndo -> ndo_vflag ) return ; ND_PRINT ( ( ndo , \"<S2SV_blank>0x%02x%02x%02x%02x%02x%02x<S2SV_blank>\" , pgm -> pgm_gsid [ 0 ] , pgm -> pgm_gsid [ 1 ] , pgm -> pgm_gsid [ 2 ] , pgm -> pgm_gsid [ 3 ] , pgm -> pgm_gsid [ 4 ] , pgm -> pgm_gsid [ 5 ] ) ) ; switch ( pgm -> pgm_type ) { case PGM_SPM : { const struct pgm_spm * spm ; spm = ( const struct pgm_spm * ) ( pgm + 1 ) ; ND_TCHECK ( * spm ) ; bp = ( const u_char * ) ( spm + 1 ) ; switch ( EXTRACT_16BITS ( & spm -> pgms_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"SPM<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>lead<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s\" , EXTRACT_32BITS ( & spm -> pgms_seq ) , EXTRACT_32BITS ( & spm -> pgms_trailseq ) , EXTRACT_32BITS ( & spm -> pgms_leadseq ) , nla_buf ) ) ; break ; } case PGM_POLL : { const struct pgm_poll * poll_msg ; poll_msg = ( const struct pgm_poll * ) ( pgm + 1 ) ; ND_TCHECK ( * poll_msg ) ; ND_PRINT ( ( ndo , \"POLL<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u\" , EXTRACT_32BITS ( & poll_msg -> pgmp_seq ) , EXTRACT_16BITS ( & poll_msg -> pgmp_round ) ) ) ; bp = ( const u_char * ) ( poll_msg + 1 ) ; break ; } case PGM_POLR : { const struct pgm_polr * polr ; uint32_t ivl , rnd , mask ; polr = ( const struct pgm_polr * ) ( pgm + 1 ) ; ND_TCHECK ( * polr ) ; bp = ( const u_char * ) ( polr + 1 ) ; switch ( EXTRACT_16BITS ( & polr -> pgmp_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; ivl = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; rnd = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; mask = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"POLR<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>rnd<S2SV_blank>0x%08x<S2SV_blank>\" \"mask<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & polr -> pgmp_seq ) , EXTRACT_16BITS ( & polr -> pgmp_round ) , nla_buf , ivl , rnd , mask ) ) ; break ; } case PGM_ODATA : { const struct pgm_data * odata ; odata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * odata ) ; ND_PRINT ( ( ndo , \"ODATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & odata -> pgmd_trailseq ) , EXTRACT_32BITS ( & odata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( odata + 1 ) ; break ; } case PGM_RDATA : { const struct pgm_data * rdata ; rdata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * rdata ) ; ND_PRINT ( ( ndo , \"RDATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & rdata -> pgmd_trailseq ) , EXTRACT_32BITS ( & rdata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( rdata + 1 ) ; break ; } case PGM_NAK : case PGM_NULLNAK : case PGM_NCF : { const struct pgm_nak * nak ; char source_buf [ INET6_ADDRSTRLEN ] , group_buf [ INET6_ADDRSTRLEN ] ; nak = ( const struct pgm_nak * ) ( pgm + 1 ) ; ND_TCHECK ( * nak ) ; bp = ( const u_char * ) ( nak + 1 ) ; switch ( EXTRACT_16BITS ( & nak -> pgmn_source_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } bp += ( 2 * sizeof ( uint16_t ) ) ; <S2SV_StartBug> switch ( EXTRACT_16BITS ( bp ) ) { <S2SV_EndBug> case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } switch ( pgm -> pgm_type ) { case PGM_NAK : ND_PRINT ( ( ndo , \"NAK<S2SV_blank>\" ) ) ; break ; case PGM_NULLNAK : ND_PRINT ( ( ndo , \"NNAK<S2SV_blank>\" ) ) ; break ; case PGM_NCF : ND_PRINT ( ( ndo , \"NCF<S2SV_blank>\" ) ) ; break ; default : break ; } ND_PRINT ( ( ndo , \"(%s<S2SV_blank>-><S2SV_blank>%s),<S2SV_blank>seq<S2SV_blank>%u\" , source_buf , group_buf , EXTRACT_32BITS ( & nak -> pgmn_seq ) ) ) ; break ; } case PGM_ACK : { const struct pgm_ack * ack ; ack = ( const struct pgm_ack * ) ( pgm + 1 ) ; ND_TCHECK ( * ack ) ; ND_PRINT ( ( ndo , \"ACK<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & ack -> pgma_rx_max_seq ) ) ) ; bp = ( const u_char * ) ( ack + 1 ) ; break ; } case PGM_SPMR : ND_PRINT ( ( ndo , \"SPMR\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"UNKNOWN<S2SV_blank>type<S2SV_blank>0x%02x\" , pgm -> pgm_type ) ) ; break ; } if ( pgm -> pgm_options & PGM_OPT_BIT_PRESENT ) { if ( ! ND_TTEST2 ( * bp , PGM_MIN_OPT_LEN ) ) { ND_PRINT ( ( ndo , \"[|OPT]\" ) ) ; return ; } opt_type = * bp ++ ; if ( ( opt_type & PGM_OPT_MASK ) != PGM_OPT_LENGTH ) { ND_PRINT ( ( ndo , \"[First<S2SV_blank>option<S2SV_blank>bad,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>PGM_OPT_LENGTH,<S2SV_blank>is<S2SV_blank>%u]\" , opt_type & PGM_OPT_MASK ) ) ; return ; } opt_len = * bp ++ ; if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } opts_len = EXTRACT_16BITS ( bp ) ; if ( opts_len < 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>4]\" , opts_len ) ) ; return ; } bp += sizeof ( uint16_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>%d\" , opts_len ) ) ; opts_len -= 4 ; while ( opts_len ) { if ( opts_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } if ( ! ND_TTEST2 ( * bp , 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; } opt_type = * bp ++ ; opt_len = * bp ++ ; if ( opt_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_MIN_OPT_LEN ) ) ; break ; } if ( opts_len < opt_len ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } if ( ! ND_TTEST2 ( * bp , opt_len - 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; } switch ( opt_type & PGM_OPT_MASK ) { case PGM_OPT_LENGTH : # define PGM_OPT_LENGTH_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_LENGTH_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_LENGTH_LEN ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>(extra?)<S2SV_blank>%d\" , EXTRACT_16BITS ( bp ) ) ) ; bp += 2 ; opts_len -= PGM_OPT_LENGTH_LEN ; break ; case PGM_OPT_FRAGMENT : # define PGM_OPT_FRAGMENT_LEN ( 2 + 2 + 4 + 4 + 4 ) if ( opt_len != PGM_OPT_FRAGMENT_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FRAGMENT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_FRAGMENT_LEN ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FRAG<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>off<S2SV_blank>%u<S2SV_blank>len<S2SV_blank>%u\" , seq , offset , len ) ) ; opts_len -= PGM_OPT_FRAGMENT_LEN ; break ; case PGM_OPT_NAK_LIST : bp += 2 ; opt_len -= 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NAK<S2SV_blank>LIST\" ) ) ; while ( opt_len ) { if ( opt_len < 4 ) { ND_PRINT ( ( ndo , \"[Option<S2SV_blank>length<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4]\" ) ) ; return ; } ND_TCHECK2 ( * bp , 4 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( bp ) ) ) ; bp += 4 ; opt_len -= 4 ; opts_len -= 4 ; } break ; case PGM_OPT_JOIN : # define PGM_OPT_JOIN_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_JOIN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_JOIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_JOIN_LEN ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>JOIN<S2SV_blank>%u\" , seq ) ) ; opts_len -= PGM_OPT_JOIN_LEN ; break ; case PGM_OPT_NAK_BO_IVL : # define PGM_OPT_NAK_BO_IVL_LEN ( 2 + 2 + 4 + 4 ) if ( opt_len != PGM_OPT_NAK_BO_IVL_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_IVL<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NAK_BO_IVL_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>ivlseq<S2SV_blank>%u\" , offset , seq ) ) ; opts_len -= PGM_OPT_NAK_BO_IVL_LEN ; break ; case PGM_OPT_NAK_BO_RNG : # define PGM_OPT_NAK_BO_RNG_LEN ( 2 + 2 + 4 + 4 ) if ( opt_len != PGM_OPT_NAK_BO_RNG_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_RNG<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NAK_BO_RNG_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>max<S2SV_blank>%u<S2SV_blank>min<S2SV_blank>%u\" , offset , seq ) ) ; opts_len -= PGM_OPT_NAK_BO_RNG_LEN ; break ; case PGM_OPT_REDIRECT : # define PGM_OPT_REDIRECT_FIXED_LEN ( 2 + 2 + 2 + 2 ) if ( opt_len < PGM_OPT_REDIRECT_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_REDIRECT_FIXED_LEN ) ) ; return ; } bp += 2 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_REDIRECT_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , PGM_OPT_REDIRECT_FIXED_LEN , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>REDIRECT<S2SV_blank>%s\" , nla_buf ) ) ; break ; case PGM_OPT_PARITY_PRM : # define PGM_OPT_PARITY_PRM_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_PARITY_PRM_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_PRM<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_PARITY_PRM_LEN ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>MAXTGS<S2SV_blank>%u\" , len ) ) ; opts_len -= PGM_OPT_PARITY_PRM_LEN ; break ; case PGM_OPT_PARITY_GRP : # define PGM_OPT_PARITY_GRP_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_PARITY_GRP_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_GRP<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_PARITY_GRP_LEN ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>GROUP<S2SV_blank>%u\" , seq ) ) ; opts_len -= PGM_OPT_PARITY_GRP_LEN ; break ; case PGM_OPT_CURR_TGSIZE : # define PGM_OPT_CURR_TGSIZE_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_CURR_TGSIZE_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CURR_TGSIZE<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_CURR_TGSIZE_LEN ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>ATGS<S2SV_blank>%u\" , len ) ) ; opts_len -= PGM_OPT_CURR_TGSIZE_LEN ; break ; case PGM_OPT_NBR_UNREACH : # define PGM_OPT_NBR_UNREACH_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_NBR_UNREACH_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NBR_UNREACH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NBR_UNREACH_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NBR_UNREACH\" ) ) ; opts_len -= PGM_OPT_NBR_UNREACH_LEN ; break ; case PGM_OPT_PATH_NLA : ND_PRINT ( ( ndo , \"<S2SV_blank>PATH_NLA<S2SV_blank>[%d]\" , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_SYN : # define PGM_OPT_SYN_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_SYN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_SYN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_SYN_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>SYN\" ) ) ; opts_len -= PGM_OPT_SYN_LEN ; break ; case PGM_OPT_FIN : # define PGM_OPT_FIN_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_FIN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_FIN_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FIN\" ) ) ; opts_len -= PGM_OPT_FIN_LEN ; break ; case PGM_OPT_RST : # define PGM_OPT_RST_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_RST_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_RST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_RST_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>RST\" ) ) ; opts_len -= PGM_OPT_RST_LEN ; break ; case PGM_OPT_CR : ND_PRINT ( ( ndo , \"<S2SV_blank>CR\" ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_CRQST : # define PGM_OPT_CRQST_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_CRQST_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CRQST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_CRQST_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>CRQST\" ) ) ; opts_len -= PGM_OPT_CRQST_LEN ; break ; case PGM_OPT_PGMCC_DATA : # define PGM_OPT_PGMCC_DATA_FIXED_LEN ( 2 + 2 + 4 + 2 + 2 ) if ( opt_len < PGM_OPT_PGMCC_DATA_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>DATA<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; case PGM_OPT_PGMCC_FEEDBACK : # define PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ( 2 + 2 + 4 + 2 + 2 ) if ( opt_len < PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>PGM_OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>FEEDBACK<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>OPT_%02X<S2SV_blank>[%d]<S2SV_blank>\" , opt_type , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; } if ( opt_type & PGM_OPT_END ) break ; } } ND_PRINT ( ( ndo , \"<S2SV_blank>[%u]\" , length ) ) ; if ( ndo -> ndo_packettype == PT_PGM_ZMTP1 && ( pgm -> pgm_type == PGM_ODATA || pgm -> pgm_type == PGM_RDATA ) ) zmtp1_print_datagram ( ndo , bp , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|pgm]\" ) ) ; if ( ch != '\\\\0' ) ND_PRINT ( ( ndo , \">\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; <S2SV_ModEnd> } else { <S2SV_ModStart> ) ) ; } return ; <S2SV_ModEnd> } sport = <S2SV_ModStart> ) ) ; ND_TCHECK_16BITS ( bp ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-770(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5850\n\n```\nCWE-770 int server_partial_file_request ( struct httpd * env , struct client * clt , char * path , struct stat * st , char * range_str ) { struct server_config * srv_conf = clt -> clt_srv_conf ; struct http_descriptor * resp = clt -> clt_descresp ; struct http_descriptor * desc = clt -> clt_descreq ; struct media_type * media , multipart_media ; <S2SV_StartBug> struct range * range ; <S2SV_EndBug> struct evbuffer * evb = NULL ; <S2SV_StartBug> size_t content_length ; <S2SV_EndBug> <S2SV_StartBug> int code = 500 , fd = - 1 , i , nranges , ret ; <S2SV_EndBug> uint32_t boundary ; char content_range [ 64 ] ; const char * errstr = NULL ; if ( desc -> http_method != HTTP_METHOD_GET ) return server_file_request ( env , clt , path , st ) ; <S2SV_StartBug> if ( ( range = parse_range ( range_str , st -> st_size , & nranges ) ) == NULL ) { <S2SV_EndBug> code = 416 ; ( void ) snprintf ( content_range , sizeof ( content_range ) , \"bytes<S2SV_blank>*/%lld\" , st -> st_size ) ; errstr = content_range ; goto abort ; } if ( ( fd = open ( path , O_RDONLY ) ) == - 1 ) goto abort ; media = media_find_config ( env , srv_conf , path ) ; <S2SV_StartBug> if ( ( evb = evbuffer_new ( ) ) == NULL ) { <S2SV_EndBug> errstr = \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>file<S2SV_blank>buffer\" ; goto abort ; } if ( nranges == 1 ) { <S2SV_StartBug> ( void ) snprintf ( content_range , sizeof ( content_range ) , <S2SV_EndBug> \"bytes<S2SV_blank>%lld-%lld/%lld\" , range -> start , range -> end , st -> st_size ) ; if ( kv_add ( & resp -> http_headers , \"Content-Range\" , content_range ) == NULL ) goto abort ; <S2SV_StartBug> content_length = range -> end - range -> start + 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( buffer_add_range ( fd , evb , range ) == 0 ) <S2SV_EndBug> goto abort ; } else { <S2SV_StartBug> content_length = 0 ; <S2SV_EndBug> boundary = arc4random ( ) ; while ( nranges -- ) { if ( ( i = evbuffer_add_printf ( evb , \"\\\\r\\\\n--%ud\\\\r\\\\n\" , boundary ) ) == - 1 ) goto abort ; <S2SV_StartBug> content_length += i ; <S2SV_EndBug> if ( ( i = evbuffer_add_printf ( evb , \"Content-Type:<S2SV_blank>%s/%s\\\\r\\\\n\" , media -> media_type , media -> media_subtype ) ) == - 1 ) goto abort ; content_length += i ; if ( ( i = evbuffer_add_printf ( evb , \"Content-Range:<S2SV_blank>bytes<S2SV_blank>%lld-%lld/%lld\\\\r\\\\n\\\\r\\\\n\" , range -> start , range -> end , st -> st_size ) ) == - 1 ) goto abort ; content_length += i ; if ( buffer_add_range ( fd , evb , range ) == 0 ) goto abort ; content_length += range -> end - range -> start + 1 ; <S2SV_StartBug> range ++ ; <S2SV_EndBug> } <S2SV_StartBug> if ( ( i = evbuffer_add_printf ( evb , \"\\\\r\\\\n--%ud--\\\\r\\\\n\" , <S2SV_EndBug> boundary ) ) == - 1 ) goto abort ; <S2SV_StartBug> content_length += i ; <S2SV_EndBug> ( void ) strlcpy ( multipart_media . media_type , \"multipart\" , sizeof ( multipart_media . media_type ) ) ; ( void ) snprintf ( multipart_media . media_subtype , sizeof ( multipart_media . media_subtype ) , <S2SV_StartBug> \"byteranges;<S2SV_blank>boundary=%ud\" , boundary ) ; <S2SV_EndBug> media = & multipart_media ; } <S2SV_StartBug> close ( fd ) ; <S2SV_EndBug> fd = - 1 ; ret = server_response_http ( clt , 206 , media , content_length , MINIMUM ( time ( NULL ) , st -> st_mtim . tv_sec ) ) ; switch ( ret ) { case - 1 : goto fail ; case 0 : <S2SV_StartBug> goto done ; <S2SV_EndBug> default : break ; } <S2SV_StartBug> if ( server_bufferevent_write_buffer ( clt , evb ) == - 1 ) <S2SV_EndBug> goto fail ; <S2SV_StartBug> bufferevent_enable ( clt -> clt_bev , EV_READ | EV_WRITE ) ; <S2SV_EndBug> <S2SV_StartBug> if ( clt -> clt_persist ) <S2SV_EndBug> clt -> clt_toread = TOREAD_HTTP_HEADER ; else clt -> clt_toread = TOREAD_HTTP_NONE ; clt -> clt_done = 0 ; done : evbuffer_free ( evb ) ; server_reset_http ( clt ) ; return ( 0 ) ; fail : bufferevent_disable ( clt -> clt_bev , EV_READ | EV_WRITE ) ; bufferevent_free ( clt -> clt_bev ) ; clt -> clt_bev = NULL ; abort : <S2SV_StartBug> if ( evb != NULL ) <S2SV_EndBug> evbuffer_free ( evb ) ; if ( fd != - 1 ) close ( fd ) ; if ( errstr == NULL ) errstr = strerror ( errno ) ; server_abort_http ( clt , code , errstr ) ; return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> multipart_media ; struct range_data * r = & clt -> clt_ranges ; struct range * range <S2SV_ModEnd> ; size_t content_length <S2SV_ModStart> ; size_t content_length = 0 <S2SV_ModStart> nranges , ret <S2SV_ModEnd> ; char content_range <S2SV_ModStart> if ( ( nranges = parse_ranges ( clt , <S2SV_ModEnd> range_str , st <S2SV_ModStart> st -> st_size ) ) < 1 <S2SV_ModEnd> ) { code <S2SV_ModStart> path ) ; r -> range_media = media ; <S2SV_ModEnd> if ( nranges <S2SV_ModStart> 1 ) { range = & r -> range [ 0 ] ; <S2SV_ModStart> goto abort ; range = & r -> range [ 0 ] ; content_length += <S2SV_ModEnd> range -> end <S2SV_ModStart> + 1 ; <S2SV_ModEnd> } else { <S2SV_ModStart> } else { arc4random_buf ( & clt -> clt_boundary , sizeof ( clt -> clt_boundary ) ) ; for ( i = 0 ; i < nranges ; i ++ ) { range = & r -> range [ i ] ; if ( ( ret = snprintf ( NULL , 0 , \"\\\\r\\\\n--%llu\\\\r\\\\n\" \"Content-Type:<S2SV_blank>%s/%s\\\\r\\\\n\" \"Content-Range:<S2SV_blank>bytes<S2SV_blank>%lld-%lld/%lld\\\\r\\\\n\\\\r\\\\n\" , clt -> clt_boundary , media -> media_type , media -> media_subtype , range -> start , range -> end , st -> st_size ) ) < 0 <S2SV_ModEnd> ) goto abort <S2SV_ModStart> ; content_length += ret + <S2SV_ModEnd> range -> end <S2SV_ModStart> + 1 ; <S2SV_ModEnd> } if ( <S2SV_ModStart> if ( ( ret = snprintf ( NULL , 0 , \"\\\\r\\\\n--%llu--\\\\r\\\\n\" , clt -> clt_boundary ) ) < 0 <S2SV_ModEnd> ) goto abort <S2SV_ModStart> ; content_length += ret <S2SV_ModEnd> ; ( void <S2SV_ModStart> media_subtype ) , \"byteranges;<S2SV_blank>boundary=%llu\" , clt -> clt_boundary <S2SV_ModEnd> ) ; media <S2SV_ModStart> multipart_media ; } r -> range_toread = TOREAD_HTTP_RANGE <S2SV_ModEnd> ; ret = <S2SV_ModStart> case 0 : close ( fd ) ; <S2SV_ModStart> break ; } clt -> clt_fd = fd ; if ( clt -> clt_srvbev != NULL ) bufferevent_free ( clt -> clt_srvbev ) ; clt -> clt_srvbev_throttled = 0 ; clt -> clt_srvbev = bufferevent_new ( clt -> clt_fd , server_read_httprange , server_write , server_file_error , clt ) ; if ( clt -> clt_srvbev == NULL ) { errstr = \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>file<S2SV_blank>buffer<S2SV_blank>event\" ; <S2SV_ModEnd> goto fail ; <S2SV_ModStart> goto fail ; } bufferevent_setwatermark ( clt -> clt_srvbev , EV_READ , 0 , clt -> clt_sndbufsiz ) ; bufferevent_settimeout ( clt -> clt_srvbev , srv_conf -> timeout . tv_sec , srv_conf -> timeout . tv_sec ) ; bufferevent_enable ( clt -> clt_srvbev , EV_READ ) ; bufferevent_disable ( clt -> clt_bev , EV_READ ) ; done : server_reset_http ( clt ) ; return ( 0 ) ; fail : bufferevent_disable <S2SV_ModEnd> ( clt -> <S2SV_ModStart> EV_WRITE ) ; <S2SV_ModEnd> bufferevent_free ( clt <S2SV_ModStart> ; abort : <S2SV_ModEnd> if ( fd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8767\n\n```\nCWE-362 static void sctp_generate_timeout_event ( struct sctp_association * asoc , sctp_event_timeout_t timeout_type ) { <S2SV_StartBug> struct net * net = sock_net ( asoc -> base . sk ) ; <S2SV_EndBug> int error = 0 ; <S2SV_StartBug> bh_lock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> <S2SV_StartBug> if ( sock_owned_by_user ( asoc -> base . sk ) ) { <S2SV_EndBug> pr_debug ( \"%s:<S2SV_blank>sock<S2SV_blank>is<S2SV_blank>busy:<S2SV_blank>timer<S2SV_blank>%d\\\\n\" , __func__ , timeout_type ) ; if ( ! mod_timer ( & asoc -> timers [ timeout_type ] , jiffies + ( HZ / 20 ) ) ) sctp_association_hold ( asoc ) ; goto out_unlock ; } if ( asoc -> base . dead ) goto out_unlock ; error = sctp_do_sm ( net , SCTP_EVENT_T_TIMEOUT , SCTP_ST_TIMEOUT ( timeout_type ) , asoc -> state , asoc -> ep , asoc , ( void * ) timeout_type , GFP_ATOMIC ) ; if ( error ) <S2SV_StartBug> asoc -> base . sk -> sk_err = - error ; <S2SV_EndBug> out_unlock : <S2SV_StartBug> bh_unlock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> sctp_association_put ( asoc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct sock * sk = asoc -> base . sk ; struct <S2SV_ModStart> = sock_net ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ; bh_lock_sock ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ( sock_owned_by_user ( <S2SV_ModEnd> sk ) ) <S2SV_ModStart> ( error ) <S2SV_ModEnd> sk -> sk_err <S2SV_ModStart> : bh_unlock_sock ( <S2SV_ModEnd> sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010292\n\n```\nCWE-119 static TEE_Result set_rmem_param ( const struct optee_msg_param_rmem * rmem , struct param_mem * mem ) <S2SV_StartBug> { <S2SV_EndBug> uint64_t shm_ref = READ_ONCE ( rmem -> shm_ref ) ; mem -> mobj = mobj_reg_shm_get_by_cookie ( shm_ref ) ; if ( ! mem -> mobj ) return TEE_ERROR_BAD_PARAMETERS ; mem -> offs = READ_ONCE ( rmem -> offs ) ; mem -> size = READ_ONCE ( rmem -> size ) ; <S2SV_StartBug> return TEE_SUCCESS ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mem ) { size_t req_size = 0 ; <S2SV_ModStart> size ) ; if ( ADD_OVERFLOW ( mem -> offs , mem -> size , & req_size ) || mem -> mobj -> size < req_size ) return TEE_ERROR_SECURITY ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18255\n\n```\nCWE-190 int perf_cpu_time_max_percent_handler ( struct ctl_table * table , int write , void __user * buffer , size_t * lenp , loff_t * ppos ) { <S2SV_StartBug> int ret = proc_dointvec ( table , write , buffer , lenp , ppos ) ; <S2SV_EndBug> if ( ret || ! write ) return ret ; if ( sysctl_perf_cpu_time_max_percent == 100 || sysctl_perf_cpu_time_max_percent == 0 ) { printk ( KERN_WARNING \"perf:<S2SV_blank>Dynamic<S2SV_blank>interrupt<S2SV_blank>throttling<S2SV_blank>disabled,<S2SV_blank>can<S2SV_blank>hang<S2SV_blank>your<S2SV_blank>system!\\\\n\" ) ; WRITE_ONCE ( perf_sample_allowed_ns , 0 ) ; } else { update_perf_cpu_limits ( ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int ret = proc_dointvec_minmax <S2SV_ModEnd> ( table ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11811\n\n```\nCWE-416 int ipmi_si_port_setup ( struct si_sm_io * io ) { unsigned int addr = io -> addr_data ; int idx ; if ( ! addr ) return - ENODEV ; <S2SV_StartBug> io -> io_cleanup = port_cleanup ; <S2SV_EndBug> switch ( io -> regsize ) { case 1 : io -> inputb = port_inb ; io -> outputb = port_outb ; break ; case 2 : io -> inputb = port_inw ; io -> outputb = port_outw ; break ; case 4 : io -> inputb = port_inl ; io -> outputb = port_outl ; break ; default : dev_warn ( io -> dev , \"Invalid<S2SV_blank>register<S2SV_blank>size:<S2SV_blank>%d\\\\n\" , io -> regsize ) ; return - EINVAL ; } for ( idx = 0 ; idx < io -> io_size ; idx ++ ) { if ( request_region ( addr + idx * io -> regspacing , io -> regsize , DEVICE_NAME ) == NULL ) { while ( idx -- ) release_region ( addr + idx * io -> regspacing , io -> regsize ) ; return - EIO ; } } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENODEV ; <S2SV_ModEnd> switch ( io <S2SV_ModStart> ; } } io -> io_cleanup = port_cleanup ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8072\n\n```\nCWE-388 static int cp2112_gpio_direction_input ( struct gpio_chip * chip , unsigned offset ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; int ret ; mutex_lock ( & dev -> lock ) ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_GET_REPORT ) ; if ( ret != CP2112_GPIO_CONFIG_LENGTH ) { hid_err ( hdev , \"error<S2SV_blank>requesting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto exit ; } buf [ 1 ] &= ~ ( 1 << offset ) ; buf [ 2 ] = gpio_push_pull ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_SET_REPORT ) ; if ( ret < 0 ) { hid_err ( hdev , \"error<S2SV_blank>setting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto exit ; } ret = 0 ; exit : mutex_unlock ( & dev -> lock ) ; <S2SV_StartBug> return ret <= 0 ? ret : - EIO ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return ret < <S2SV_ModEnd> 0 ? ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1874\n\n```\nCWE-20 static int security_context_to_sid_core ( const char * scontext , u32 scontext_len , u32 * sid , u32 def_sid , gfp_t gfp_flags , int force ) { char * scontext2 , * str = NULL ; struct context context ; <S2SV_StartBug> int rc = 0 ; <S2SV_EndBug> if ( ! ss_initialized ) { int i ; for ( i = 1 ; i < SECINITSID_NUM ; i ++ ) { if ( ! strcmp ( initial_sid_to_string [ i ] , scontext ) ) { * sid = i ; return 0 ; } } * sid = SECINITSID_KERNEL ; return 0 ; } * sid = SECSID_NULL ; scontext2 = kmalloc ( scontext_len + 1 , gfp_flags ) ; if ( ! scontext2 ) return - ENOMEM ; memcpy ( scontext2 , scontext , scontext_len ) ; scontext2 [ scontext_len ] = 0 ; if ( force ) { rc = - ENOMEM ; str = kstrdup ( scontext2 , gfp_flags ) ; if ( ! str ) goto out ; } read_lock ( & policy_rwlock ) ; rc = string_to_context_struct ( & policydb , & sidtab , scontext2 , scontext_len , & context , def_sid ) ; if ( rc == - EINVAL && force ) { context . str = str ; context . len = scontext_len ; str = NULL ; } else if ( rc ) goto out_unlock ; rc = sidtab_context_to_sid ( & sidtab , & context , sid ) ; context_destroy ( & context ) ; out_unlock : read_unlock ( & policy_rwlock ) ; out : kfree ( scontext2 ) ; kfree ( str ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc = 0 ; if ( ! scontext_len ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8929\n\n```\nCWE-416 int yr_execute_code ( YR_RULES * rules , YR_SCAN_CONTEXT * context , int timeout , time_t start_time ) { int64_t mem [ MEM_SIZE ] ; int32_t sp = 0 ; uint8_t * ip = rules -> code_start ; YR_VALUE args [ MAX_FUNCTION_ARGS ] ; YR_VALUE * stack ; YR_VALUE r1 ; YR_VALUE r2 ; YR_VALUE r3 ; # ifdef PROFILING_ENABLED YR_RULE * current_rule = NULL ; # endif YR_RULE * rule ; YR_MATCH * match ; YR_OBJECT_FUNCTION * function ; <S2SV_StartBug> char * identifier ; <S2SV_EndBug> char * args_fmt ; int i ; int found ; int count ; int result = ERROR_SUCCESS ; int stop = FALSE ; int cycle = 0 ; int tidx = context -> tidx ; int stack_size ; # ifdef PROFILING_ENABLED clock_t start = clock ( ) ; # endif yr_get_configuration ( YR_CONFIG_STACK_SIZE , ( void * ) & stack_size ) ; stack = ( YR_VALUE * ) yr_malloc ( stack_size * sizeof ( YR_VALUE ) ) ; if ( stack == NULL ) <S2SV_StartBug> return ERROR_INSUFFICIENT_MEMORY ; <S2SV_EndBug> while ( ! stop ) { switch ( * ip ) { case OP_NOP : break ; case OP_HALT : assert ( sp == 0 ) ; stop = TRUE ; break ; case OP_PUSH : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; push ( r1 ) ; break ; case OP_POP : pop ( r1 ) ; break ; case OP_CLEAR_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; mem [ r1 . i ] = 0 ; break ; case OP_ADD_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; if ( ! is_undef ( r2 ) ) mem [ r1 . i ] += r2 . i ; break ; case OP_INCR_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; mem [ r1 . i ] ++ ; break ; case OP_PUSH_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . i = mem [ r1 . i ] ; push ( r1 ) ; break ; case OP_POP_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; mem [ r1 . i ] = r2 . i ; break ; case OP_SWAPUNDEF : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; if ( is_undef ( r2 ) ) { r1 . i = mem [ r1 . i ] ; push ( r1 ) ; } else { push ( r2 ) ; } break ; case OP_JNUNDEF : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( ! is_undef ( r1 ) , ip ) ; break ; case OP_JLE : pop ( r2 ) ; pop ( r1 ) ; push ( r1 ) ; push ( r2 ) ; ip = jmp_if ( r1 . i <= r2 . i , ip ) ; break ; case OP_JTRUE : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( ! is_undef ( r1 ) && r1 . i , ip ) ; break ; case OP_JFALSE : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( is_undef ( r1 ) || ! r1 . i , ip ) ; break ; case OP_AND : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) || is_undef ( r2 ) ) r1 . i = 0 ; else r1 . i = r1 . i && r2 . i ; push ( r1 ) ; break ; case OP_OR : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) ) { push ( r2 ) ; } else if ( is_undef ( r2 ) ) { push ( r1 ) ; } else { r1 . i = r1 . i || r2 . i ; push ( r1 ) ; } break ; case OP_NOT : pop ( r1 ) ; if ( is_undef ( r1 ) ) r1 . i = UNDEFINED ; else r1 . i = ! r1 . i ; push ( r1 ) ; break ; case OP_MOD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r2 . i != 0 ) r1 . i = r1 . i % r2 . i ; else r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_SHR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i >> r2 . i ; push ( r1 ) ; break ; case OP_SHL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i << r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_NOT : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = ~ r1 . i ; push ( r1 ) ; break ; case OP_BITWISE_AND : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i & r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_OR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i | r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_XOR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i ^ r2 . i ; push ( r1 ) ; break ; case OP_PUSH_RULE : rule = * ( YR_RULE * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . i = rule -> t_flags [ tidx ] & RULE_TFLAGS_MATCH ? 1 : 0 ; push ( r1 ) ; break ; case OP_INIT_RULE : # ifdef PROFILING_ENABLED current_rule = * ( YR_RULE * * ) ( ip + 1 ) ; # endif ip += sizeof ( uint64_t ) ; break ; case OP_MATCH_RULE : pop ( r1 ) ; rule = * ( YR_RULE * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; if ( ! is_undef ( r1 ) && r1 . i ) rule -> t_flags [ tidx ] |= RULE_TFLAGS_MATCH ; else if ( RULE_IS_GLOBAL ( rule ) ) rule -> ns -> t_flags [ tidx ] |= NAMESPACE_TFLAGS_UNSATISFIED_GLOBAL ; # ifdef PROFILING_ENABLED rule -> clock_ticks += clock ( ) - start ; start = clock ( ) ; # endif <S2SV_StartBug> break ; <S2SV_EndBug> case OP_OBJ_LOAD : identifier = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . o = ( YR_OBJECT * ) yr_hash_table_lookup ( context -> objects_table , identifier , NULL ) ; assert ( r1 . o != NULL ) ; push ( r1 ) ; break ; case OP_OBJ_FIELD : identifier = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . o = yr_object_lookup_field ( r1 . o , identifier ) ; assert ( r1 . o != NULL ) ; push ( r1 ) ; break ; case OP_OBJ_VALUE : pop ( r1 ) ; ensure_defined ( r1 ) ; switch ( r1 . o -> type ) { case OBJECT_TYPE_INTEGER : r1 . i = ( ( YR_OBJECT_INTEGER * ) r1 . o ) -> value ; break ; case OBJECT_TYPE_FLOAT : if ( isnan ( ( ( YR_OBJECT_DOUBLE * ) r1 . o ) -> value ) ) r1 . i = UNDEFINED ; else r1 . d = ( ( YR_OBJECT_DOUBLE * ) r1 . o ) -> value ; break ; case OBJECT_TYPE_STRING : if ( ( ( YR_OBJECT_STRING * ) r1 . o ) -> value == NULL ) r1 . i = UNDEFINED ; else r1 . p = ( ( YR_OBJECT_STRING * ) r1 . o ) -> value ; break ; default : assert ( FALSE ) ; } push ( r1 ) ; break ; case OP_INDEX_ARRAY : pop ( r1 ) ; pop ( r2 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; assert ( r2 . o -> type == OBJECT_TYPE_ARRAY ) ; r1 . o = yr_object_array_get_item ( r2 . o , 0 , ( int ) r1 . i ) ; if ( r1 . o == NULL ) r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_LOOKUP_DICT : pop ( r1 ) ; pop ( r2 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; assert ( r2 . o -> type == OBJECT_TYPE_DICTIONARY ) ; r1 . o = yr_object_dict_get_item ( r2 . o , 0 , r1 . ss -> c_string ) ; if ( r1 . o == NULL ) r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_CALL : args_fmt = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; i = ( int ) strlen ( args_fmt ) ; count = 0 ; while ( i > 0 ) { pop ( r1 ) ; if ( is_undef ( r1 ) ) count ++ ; args [ i - 1 ] = r1 ; i -- ; } pop ( r2 ) ; ensure_defined ( r2 ) ; if ( count > 0 ) { r1 . i = UNDEFINED ; push ( r1 ) ; break ; } function = ( YR_OBJECT_FUNCTION * ) r2 . o ; result = ERROR_INTERNAL_FATAL_ERROR ; for ( i = 0 ; i < MAX_OVERLOADED_FUNCTIONS ; i ++ ) { if ( function -> prototypes [ i ] . arguments_fmt == NULL ) break ; if ( strcmp ( function -> prototypes [ i ] . arguments_fmt , args_fmt ) == 0 ) { result = function -> prototypes [ i ] . code ( args , context , function ) ; break ; } } assert ( i < MAX_OVERLOADED_FUNCTIONS ) ; if ( result == ERROR_SUCCESS ) <S2SV_StartBug> { <S2SV_EndBug> <S2SV_StartBug> r1 . o = function -> return_obj ; <S2SV_EndBug> push ( r1 ) ; } else { stop = TRUE ; } break ; case OP_FOUND : pop ( r1 ) ; r1 . i = r1 . s -> matches [ tidx ] . tail != NULL ? 1 : 0 ; push ( r1 ) ; break ; case OP_FOUND_AT : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) ) { r1 . i = 0 ; push ( r1 ) ; break ; } match = r2 . s -> matches [ tidx ] . head ; r3 . i = FALSE ; while ( match != NULL ) { if ( r1 . i == match -> base + match -> offset ) { r3 . i = TRUE ; break ; } if ( r1 . i < match -> base + match -> offset ) break ; match = match -> next ; } push ( r3 ) ; break ; case OP_FOUND_IN : pop ( r3 ) ; pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; match = r3 . s -> matches [ tidx ] . head ; r3 . i = FALSE ; while ( match != NULL && ! r3 . i ) { if ( match -> base + match -> offset >= r1 . i && match -> base + match -> offset <= r2 . i ) { r3 . i = TRUE ; } if ( match -> base + match -> offset > r2 . i ) break ; match = match -> next ; } push ( r3 ) ; break ; case OP_COUNT : pop ( r1 ) ; r1 . i = r1 . s -> matches [ tidx ] . count ; push ( r1 ) ; break ; case OP_OFFSET : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; match = r2 . s -> matches [ tidx ] . head ; i = 1 ; r3 . i = UNDEFINED ; while ( match != NULL && r3 . i == UNDEFINED ) { if ( r1 . i == i ) r3 . i = match -> base + match -> offset ; i ++ ; match = match -> next ; } push ( r3 ) ; break ; case OP_LENGTH : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; match = r2 . s -> matches [ tidx ] . head ; i = 1 ; r3 . i = UNDEFINED ; while ( match != NULL && r3 . i == UNDEFINED ) { if ( r1 . i == i ) r3 . i = match -> match_length ; i ++ ; match = match -> next ; } push ( r3 ) ; break ; case OP_OF : found = 0 ; count = 0 ; pop ( r1 ) ; while ( ! is_undef ( r1 ) ) { if ( r1 . s -> matches [ tidx ] . tail != NULL ) found ++ ; count ++ ; pop ( r1 ) ; } pop ( r2 ) ; if ( is_undef ( r2 ) ) r1 . i = found >= count ? 1 : 0 ; else r1 . i = found >= r2 . i ? 1 : 0 ; push ( r1 ) ; break ; case OP_FILESIZE : r1 . i = context -> file_size ; push ( r1 ) ; break ; case OP_ENTRYPOINT : r1 . i = context -> entry_point ; push ( r1 ) ; break ; case OP_INT8 : pop ( r1 ) ; r1 . i = read_int8_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT16 : pop ( r1 ) ; r1 . i = read_int16_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT32 : pop ( r1 ) ; r1 . i = read_int32_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT8 : pop ( r1 ) ; r1 . i = read_uint8_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT16 : pop ( r1 ) ; r1 . i = read_uint16_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT32 : pop ( r1 ) ; r1 . i = read_uint32_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT8BE : pop ( r1 ) ; r1 . i = read_int8_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT16BE : pop ( r1 ) ; r1 . i = read_int16_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT32BE : pop ( r1 ) ; r1 . i = read_int32_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT8BE : pop ( r1 ) ; r1 . i = read_uint8_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT16BE : pop ( r1 ) ; r1 . i = read_uint16_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT32BE : pop ( r1 ) ; r1 . i = read_uint32_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_CONTAINS : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; r1 . i = memmem ( r1 . ss -> c_string , r1 . ss -> length , r2 . ss -> c_string , r2 . ss -> length ) != NULL ; push ( r1 ) ; break ; case OP_IMPORT : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; result = yr_modules_load ( ( char * ) r1 . p , context ) ; if ( result != ERROR_SUCCESS ) stop = TRUE ; break ; case OP_MATCHES : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r1 . ss -> length == 0 ) { r1 . i = FALSE ; push ( r1 ) ; break ; } result = yr_re_exec ( ( uint8_t * ) r2 . re -> code , ( uint8_t * ) r1 . ss -> c_string , r1 . ss -> length , 0 , r2 . re -> flags | RE_FLAGS_SCAN , NULL , NULL , & found ) ; if ( result != ERROR_SUCCESS ) stop = TRUE ; r1 . i = found >= 0 ; push ( r1 ) ; break ; case OP_INT_TO_DBL : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r2 = stack [ sp - r1 . i ] ; if ( is_undef ( r2 ) ) stack [ sp - r1 . i ] . i = UNDEFINED ; else stack [ sp - r1 . i ] . d = ( double ) r2 . i ; break ; case OP_STR_TO_BOOL : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . ss -> length > 0 ; push ( r1 ) ; break ; case OP_INT_EQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i == r2 . i ; push ( r1 ) ; break ; case OP_INT_NEQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i != r2 . i ; push ( r1 ) ; break ; case OP_INT_LT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i < r2 . i ; push ( r1 ) ; break ; case OP_INT_GT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i > r2 . i ; push ( r1 ) ; break ; case OP_INT_LE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i <= r2 . i ; push ( r1 ) ; break ; case OP_INT_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i >= r2 . i ; push ( r1 ) ; break ; case OP_INT_ADD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i + r2 . i ; push ( r1 ) ; break ; case OP_INT_SUB : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i - r2 . i ; push ( r1 ) ; break ; case OP_INT_MUL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i * r2 . i ; push ( r1 ) ; break ; case OP_INT_DIV : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r2 . i != 0 ) r1 . i = r1 . i / r2 . i ; else r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_INT_MINUS : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = - r1 . i ; push ( r1 ) ; break ; case OP_DBL_LT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d < r2 . d ; push ( r1 ) ; break ; case OP_DBL_GT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d > r2 . d ; push ( r1 ) ; break ; case OP_DBL_LE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d <= r2 . d ; push ( r1 ) ; break ; case OP_DBL_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d >= r2 . d ; push ( r1 ) ; break ; case OP_DBL_EQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d == r2 . d ; push ( r1 ) ; break ; case OP_DBL_NEQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d != r2 . d ; push ( r1 ) ; break ; case OP_DBL_ADD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d + r2 . d ; push ( r1 ) ; break ; case OP_DBL_SUB : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d - r2 . d ; push ( r1 ) ; break ; case OP_DBL_MUL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d * r2 . d ; push ( r1 ) ; break ; case OP_DBL_DIV : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d / r2 . d ; push ( r1 ) ; break ; case OP_DBL_MINUS : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . d = - r1 . d ; push ( r1 ) ; break ; case OP_STR_EQ : case OP_STR_NEQ : case OP_STR_LT : case OP_STR_LE : case OP_STR_GT : case OP_STR_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; switch ( * ip ) { case OP_STR_EQ : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) == 0 ) ; break ; case OP_STR_NEQ : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) != 0 ) ; break ; case OP_STR_LT : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) < 0 ) ; break ; case OP_STR_LE : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) <= 0 ) ; break ; case OP_STR_GT : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) > 0 ) ; break ; case OP_STR_GE : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) >= 0 ) ; break ; } push ( r1 ) ; break ; default : assert ( FALSE ) ; } if ( timeout > 0 ) { if ( ++ cycle == 10 ) { if ( difftime ( time ( NULL ) , start_time ) > timeout ) { # ifdef PROFILING_ENABLED assert ( current_rule != NULL ) ; current_rule -> clock_ticks += clock ( ) - start ; # endif result = ERROR_SCAN_TIMEOUT ; stop = TRUE ; } cycle = 0 ; } } ip ++ ; } <S2SV_StartBug> yr_modules_unload_all ( context ) ; <S2SV_EndBug> yr_free ( stack ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * function ; YR_OBJECT * * obj_ptr ; YR_ARENA * obj_arena ; <S2SV_ModStart> ) return ERROR_INSUFFICIENT_MEMORY ; FAIL_ON_ERROR_WITH_CLEANUP ( yr_arena_create ( 1024 , 0 , & obj_arena ) , yr_free ( stack ) ) <S2SV_ModStart> ; # endif assert ( sp == 0 ) ; <S2SV_ModStart> == ERROR_SUCCESS ) result = yr_object_copy ( function -> return_obj , & <S2SV_ModEnd> r1 . o <S2SV_ModStart> r1 . o ) ; if ( result == ERROR_SUCCESS ) result = yr_arena_write_data ( obj_arena , & r1 . o , sizeof ( r1 . o ) , NULL ) ; stop = ( result != ERROR_SUCCESS ) ; push ( r1 ) ; <S2SV_ModEnd> break ; case <S2SV_ModStart> ++ ; } obj_ptr = ( YR_OBJECT * * ) yr_arena_base_address ( obj_arena ) ; while ( obj_ptr != NULL ) { yr_object_destroy ( * obj_ptr ) ; obj_ptr = ( YR_OBJECT * * ) yr_arena_next_address ( obj_arena , obj_ptr , sizeof ( YR_OBJECT * ) ) ; } yr_arena_destroy ( obj_arena ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17806\n\n```\nCWE-787 static int hmac_create ( struct crypto_template * tmpl , struct rtattr * * tb ) { struct shash_instance * inst ; struct crypto_alg * alg ; struct shash_alg * salg ; int err ; int ds ; int ss ; err = crypto_check_attr_type ( tb , CRYPTO_ALG_TYPE_SHASH ) ; if ( err ) return err ; salg = shash_attr_alg ( tb [ 1 ] , 0 , 0 ) ; if ( IS_ERR ( salg ) ) return PTR_ERR ( salg ) ; <S2SV_StartBug> err = - EINVAL ; <S2SV_EndBug> <S2SV_StartBug> ds = salg -> digestsize ; <S2SV_EndBug> <S2SV_StartBug> ss = salg -> statesize ; <S2SV_EndBug> alg = & salg -> base ; if ( ds > alg -> cra_blocksize || ss < alg -> cra_blocksize ) goto out_put_alg ; inst = shash_alloc_instance ( \"hmac\" , alg ) ; err = PTR_ERR ( inst ) ; if ( IS_ERR ( inst ) ) goto out_put_alg ; err = crypto_init_shash_spawn ( shash_instance_ctx ( inst ) , salg , shash_crypto_instance ( inst ) ) ; if ( err ) goto out_free_inst ; inst -> alg . base . cra_priority = alg -> cra_priority ; inst -> alg . base . cra_blocksize = alg -> cra_blocksize ; inst -> alg . base . cra_alignmask = alg -> cra_alignmask ; ss = ALIGN ( ss , alg -> cra_alignmask + 1 ) ; inst -> alg . digestsize = ds ; inst -> alg . statesize = ss ; inst -> alg . base . cra_ctxsize = sizeof ( struct hmac_ctx ) + ALIGN ( ss * 2 , crypto_tfm_ctx_alignment ( ) ) ; inst -> alg . base . cra_init = hmac_init_tfm ; inst -> alg . base . cra_exit = hmac_exit_tfm ; inst -> alg . init = hmac_init ; inst -> alg . update = hmac_update ; inst -> alg . final = hmac_final ; inst -> alg . finup = hmac_finup ; inst -> alg . export = hmac_export ; inst -> alg . import = hmac_import ; inst -> alg . setkey = hmac_setkey ; err = shash_register_instance ( tmpl , inst ) ; if ( err ) { out_free_inst : shash_free_instance ( shash_crypto_instance ( inst ) ) ; } out_put_alg : crypto_mod_put ( alg ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> salg ) ; alg = & salg -> base ; <S2SV_ModStart> - EINVAL ; if ( crypto_shash_alg_has_setkey ( salg ) ) goto out_put_alg ; <S2SV_ModStart> salg -> statesize <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static int misaligned_store ( struct pt_regs * regs , __u32 opcode , int displacement_not_indexed , int width_shift ) { int error ; int srcreg ; __u64 address ; error = generate_and_check_address ( regs , opcode , displacement_not_indexed , width_shift , & address ) ; if ( error < 0 ) { return error ; } <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 , 0 , regs , address ) ; <S2SV_EndBug> srcreg = ( opcode >> 4 ) & 0x3f ; if ( user_mode ( regs ) ) { __u64 buffer ; if ( ! access_ok ( VERIFY_WRITE , ( unsigned long ) address , 1UL << width_shift ) ) { return - 1 ; } switch ( width_shift ) { case 1 : * ( __u16 * ) & buffer = ( __u16 ) regs -> regs [ srcreg ] ; break ; case 2 : * ( __u32 * ) & buffer = ( __u32 ) regs -> regs [ srcreg ] ; break ; case 3 : buffer = regs -> regs [ srcreg ] ; break ; default : printk ( \"Unexpected<S2SV_blank>width_shift<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>misaligned_store,<S2SV_blank>PC=%08lx\\\\n\" , width_shift , ( unsigned long ) regs -> pc ) ; break ; } if ( __copy_user ( ( void * ) ( int ) address , & buffer , ( 1 << width_shift ) ) > 0 ) { return - 1 ; } } else { __u64 val = regs -> regs [ srcreg ] ; switch ( width_shift ) { case 1 : misaligned_kernel_word_store ( address , val ) ; break ; case 2 : asm ( \"stlo.l<S2SV_blank>%1,<S2SV_blank>0,<S2SV_blank>%0\" : : \"r\" ( val ) , \"r\" ( address ) ) ; asm ( \"sthi.l<S2SV_blank>%1,<S2SV_blank>3,<S2SV_blank>%0\" : : \"r\" ( val ) , \"r\" ( address ) ) ; break ; case 3 : asm ( \"stlo.q<S2SV_blank>%1,<S2SV_blank>0,<S2SV_blank>%0\" : : \"r\" ( val ) , \"r\" ( address ) ) ; asm ( \"sthi.q<S2SV_blank>%1,<S2SV_blank>7,<S2SV_blank>%0\" : : \"r\" ( val ) , \"r\" ( address ) ) ; break ; default : printk ( \"Unexpected<S2SV_blank>width_shift<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>misaligned_store,<S2SV_blank>PC=%08lx\\\\n\" , width_shift , ( unsigned long ) regs -> pc ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , address\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-532(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-13881\n\n```\nCWE-532 int _pam_parse ( int argc , const char * * argv ) { int ctrl = 0 ; const char * current_secret = NULL ; memset ( tac_srv , 0 , sizeof ( tacplus_server_t ) * TAC_PLUS_MAXSERVERS ) ; memset ( & tac_srv_addr , 0 , sizeof ( struct addrinfo ) * TAC_PLUS_MAXSERVERS ) ; memset ( & tac_sock_addr , 0 , sizeof ( struct sockaddr ) * TAC_PLUS_MAXSERVERS ) ; memset ( & tac_sock6_addr , 0 , sizeof ( struct sockaddr_in6 ) * TAC_PLUS_MAXSERVERS ) ; tac_srv_no = 0 ; tac_service [ 0 ] = 0 ; tac_protocol [ 0 ] = 0 ; tac_prompt [ 0 ] = 0 ; tac_login [ 0 ] = 0 ; for ( ctrl = 0 ; argc -- > 0 ; ++ argv ) { if ( ! strcmp ( * argv , \"debug\" ) ) { ctrl |= PAM_TAC_DEBUG ; } else if ( ! strcmp ( * argv , \"use_first_pass\" ) ) { ctrl |= PAM_TAC_USE_FIRST_PASS ; } else if ( ! strcmp ( * argv , \"try_first_pass\" ) ) { ctrl |= PAM_TAC_TRY_FIRST_PASS ; } else if ( ! strncmp ( * argv , \"service=\" , 8 ) ) { xstrcpy ( tac_service , * argv + 8 , sizeof ( tac_service ) ) ; } else if ( ! strncmp ( * argv , \"protocol=\" , 9 ) ) { xstrcpy ( tac_protocol , * argv + 9 , sizeof ( tac_protocol ) ) ; } else if ( ! strncmp ( * argv , \"prompt=\" , 7 ) ) { xstrcpy ( tac_prompt , * argv + 7 , sizeof ( tac_prompt ) ) ; unsigned long chr ; for ( chr = 0 ; chr < strlen ( tac_prompt ) ; chr ++ ) { if ( tac_prompt [ chr ] == '_' ) { tac_prompt [ chr ] = '<S2SV_blank>' ; } } } else if ( ! strncmp ( * argv , \"login=\" , 6 ) ) { xstrcpy ( tac_login , * argv + 6 , sizeof ( tac_login ) ) ; } else if ( ! strcmp ( * argv , \"acct_all\" ) ) { ctrl |= PAM_TAC_ACCT ; } else if ( ! strncmp ( * argv , \"server=\" , 7 ) ) { if ( tac_srv_no < TAC_PLUS_MAXSERVERS ) { struct addrinfo hints , * servers , * server ; int rv ; char * close_bracket , * server_name , * port , server_buf [ 256 ] ; memset ( & hints , 0 , sizeof hints ) ; memset ( & server_buf , 0 , sizeof ( server_buf ) ) ; hints . ai_family = AF_UNSPEC ; hints . ai_socktype = SOCK_STREAM ; if ( strlen ( * argv + 7 ) >= sizeof ( server_buf ) ) { _pam_log ( LOG_ERR , \"server<S2SV_blank>address<S2SV_blank>too<S2SV_blank>long,<S2SV_blank>sorry\" ) ; continue ; } strcpy ( server_buf , * argv + 7 ) ; if ( * server_buf == '[' && ( close_bracket = strchr ( server_buf , ']' ) ) != NULL ) { server_name = server_buf + 1 ; _pam_log ( LOG_ERR , \"reading<S2SV_blank>server<S2SV_blank>address<S2SV_blank>as:<S2SV_blank>%s<S2SV_blank>\" , server_name ) ; port = strchr ( close_bracket , ':' ) ; * close_bracket = '\\\\0' ; } else { server_name = server_buf ; port = strchr ( server_buf , ':' ) ; } if ( port != NULL ) { * port = '\\\\0' ; port ++ ; } _pam_log ( LOG_DEBUG , \"sending<S2SV_blank>server<S2SV_blank>address<S2SV_blank>to<S2SV_blank>getaddrinfo<S2SV_blank>as:<S2SV_blank>%s<S2SV_blank>\" , server_name ) ; if ( ( rv = getaddrinfo ( server_name , ( port == NULL ) ? \"49\" : port , & hints , & servers ) ) == 0 ) { for ( server = servers ; server != NULL && tac_srv_no < TAC_PLUS_MAXSERVERS ; server = server -> ai_next ) { set_tac_srv_addr ( tac_srv_no , server ) ; set_tac_srv_key ( tac_srv_no , current_secret ) ; tac_srv_no ++ ; } _pam_log ( LOG_DEBUG , \"%s:<S2SV_blank>server<S2SV_blank>index<S2SV_blank>%d<S2SV_blank>\" , __FUNCTION__ , tac_srv_no ) ; freeaddrinfo ( servers ) ; } else { _pam_log ( LOG_ERR , \"skip<S2SV_blank>invalid<S2SV_blank>server:<S2SV_blank>%s<S2SV_blank>(getaddrinfo:<S2SV_blank>%s)\" , server_name , gai_strerror ( rv ) ) ; } } else { _pam_log ( LOG_ERR , \"maximum<S2SV_blank>number<S2SV_blank>of<S2SV_blank>servers<S2SV_blank>(%d)<S2SV_blank>exceeded,<S2SV_blank>skipping\" , TAC_PLUS_MAXSERVERS ) ; } } else if ( ! strncmp ( * argv , \"secret=\" , 7 ) ) { current_secret = * argv + 7 ; if ( tac_srv_no == 0 ) { _pam_log ( LOG_ERR , \"secret<S2SV_blank>set<S2SV_blank>but<S2SV_blank>no<S2SV_blank>servers<S2SV_blank>configured<S2SV_blank>yet\" ) ; } else { set_tac_srv_key ( tac_srv_no - 1 , current_secret ) ; } } else if ( ! strncmp ( * argv , \"timeout=\" , 8 ) ) { # ifdef HAVE_STRTOL tac_timeout = strtol ( * argv + 8 , NULL , 10 ) ; # else tac_timeout = atoi ( * argv + 8 ) ; # endif if ( tac_timeout == LONG_MAX ) { _pam_log ( LOG_ERR , \"timeout<S2SV_blank>parameter<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>parsed<S2SV_blank>as<S2SV_blank>integer:<S2SV_blank>%s\" , * argv ) ; tac_timeout = 0 ; } else { tac_readtimeout_enable = 1 ; } } else { _pam_log ( LOG_WARNING , \"unrecognized<S2SV_blank>option:<S2SV_blank>%s\" , * argv ) ; } } if ( ctrl & PAM_TAC_DEBUG ) { unsigned long n ; _pam_log ( LOG_DEBUG , \"%d<S2SV_blank>servers<S2SV_blank>defined\" , tac_srv_no ) ; for ( n = 0 ; n < tac_srv_no ; n ++ ) { <S2SV_StartBug> _pam_log ( LOG_DEBUG , \"server[%lu]<S2SV_blank>{<S2SV_blank>addr=%s,<S2SV_blank>key=\\'%s\\'<S2SV_blank>}\" , n , tac_ntop ( tac_srv [ n ] . addr -> ai_addr ) , <S2SV_EndBug> tac_srv [ n ] . key ) ; } _pam_log ( LOG_DEBUG , \"tac_service=\\'%s\\'\" , tac_service ) ; _pam_log ( LOG_DEBUG , \"tac_protocol=\\'%s\\'\" , tac_protocol ) ; _pam_log ( LOG_DEBUG , \"tac_prompt=\\'%s\\'\" , tac_prompt ) ; _pam_log ( LOG_DEBUG , \"tac_login=\\'%s\\'\" , tac_login ) ; } return ctrl ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( LOG_DEBUG , \"server[%lu]<S2SV_blank>{<S2SV_blank>addr=%s,<S2SV_blank>key=\\'********\\'<S2SV_blank>}\" <S2SV_ModEnd> , n , <S2SV_ModStart> -> ai_addr ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_default_bmode_probs ( vp8_prob p [ VP8_BINTRAMODES - 1 ] ) { <S2SV_StartBug> vpx_memcpy ( p , vp8_bmode_prob , sizeof ( vp8_bmode_prob ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) { memcpy <S2SV_ModEnd> ( p ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14398\n\n```\nCWE-835 rfbClient * rfbGetClient ( int bitsPerSample , int samplesPerPixel , int bytesPerPixel ) { # ifdef WIN32 WSADATA unused ; # endif rfbClient * client = ( rfbClient * ) calloc ( sizeof ( rfbClient ) , 1 ) ; if ( ! client ) { rfbClientErr ( \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>client<S2SV_blank>structure!\\\\n\" ) ; return NULL ; } # ifdef WIN32 if ( ( errno = WSAStartup ( MAKEWORD ( 2 , 0 ) , & unused ) ) != 0 ) { rfbClientErr ( \"Could<S2SV_blank>not<S2SV_blank>init<S2SV_blank>Windows<S2SV_blank>Sockets:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; return NULL ; } # endif initAppData ( & client -> appData ) ; client -> endianTest = 1 ; client -> programName = \"\" ; client -> serverHost = strdup ( \"\" ) ; client -> serverPort = 5900 ; client -> destHost = NULL ; client -> destPort = 5900 ; <S2SV_StartBug> client -> connectTimeout = DEFAULT_CONNECT_TIMEOUT ; <S2SV_EndBug> client -> CurrentKeyboardLedState = 0 ; client -> HandleKeyboardLedState = ( HandleKeyboardLedStateProc ) DummyPoint ; client -> updateRect . x = - 1 ; client -> frameBuffer = NULL ; client -> outputWindow = 0 ; client -> format . bitsPerPixel = bytesPerPixel * 8 ; client -> format . depth = bitsPerSample * samplesPerPixel ; client -> appData . requestedDepth = client -> format . depth ; client -> format . bigEndian = * ( char * ) & client -> endianTest ? FALSE : TRUE ; client -> format . trueColour = 1 ; if ( client -> format . bitsPerPixel == 8 ) { client -> format . redMax = 7 ; client -> format . greenMax = 7 ; client -> format . blueMax = 3 ; client -> format . redShift = 0 ; client -> format . greenShift = 3 ; client -> format . blueShift = 6 ; } else { client -> format . redMax = ( 1 << bitsPerSample ) - 1 ; client -> format . greenMax = ( 1 << bitsPerSample ) - 1 ; client -> format . blueMax = ( 1 << bitsPerSample ) - 1 ; if ( ! client -> format . bigEndian ) { client -> format . redShift = 0 ; client -> format . greenShift = bitsPerSample ; client -> format . blueShift = bitsPerSample * 2 ; } else { if ( client -> format . bitsPerPixel == 8 * 3 ) { client -> format . redShift = bitsPerSample * 2 ; client -> format . greenShift = bitsPerSample * 1 ; client -> format . blueShift = 0 ; } else { client -> format . redShift = bitsPerSample * 3 ; client -> format . greenShift = bitsPerSample * 2 ; client -> format . blueShift = bitsPerSample ; } } } client -> bufoutptr = client -> buf ; client -> buffered = 0 ; # ifdef LIBVNCSERVER_HAVE_LIBZ client -> raw_buffer_size = - 1 ; client -> decompStreamInited = FALSE ; # ifdef LIBVNCSERVER_HAVE_LIBJPEG memset ( client -> zlibStreamActive , 0 , sizeof ( rfbBool ) * 4 ) ; # endif # endif client -> HandleCursorPos = DummyPoint ; client -> SoftCursorLockArea = DummyRect ; client -> SoftCursorUnlockScreen = Dummy ; client -> GotFrameBufferUpdate = DummyRect ; client -> GotCopyRect = CopyRectangleFromRectangle ; client -> GotFillRect = FillRectangle ; client -> GotBitmap = CopyRectangle ; client -> FinishedFrameBufferUpdate = NULL ; client -> GetPassword = ReadPassword ; client -> MallocFrameBuffer = MallocFrameBuffer ; client -> Bell = Dummy ; client -> CurrentKeyboardLedState = 0 ; client -> HandleKeyboardLedState = ( HandleKeyboardLedStateProc ) DummyPoint ; client -> QoS_DSCP = 0 ; client -> authScheme = 0 ; client -> subAuthScheme = 0 ; client -> GetCredential = NULL ; client -> tlsSession = NULL ; client -> LockWriteToTLS = NULL ; client -> UnlockWriteToTLS = NULL ; client -> sock = RFB_INVALID_SOCKET ; client -> listenSock = RFB_INVALID_SOCKET ; client -> listenAddress = NULL ; client -> listen6Sock = RFB_INVALID_SOCKET ; client -> listen6Address = NULL ; client -> clientAuthSchemes = NULL ; # ifdef LIBVNCSERVER_HAVE_SASL client -> GetSASLMechanism = NULL ; client -> GetUser = NULL ; client -> saslSecret = NULL ; # endif return client ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> connectTimeout = DEFAULT_CONNECT_TIMEOUT ; client -> readTimeout = DEFAULT_READ_TIMEOUT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * inpic ) { KerndeintContext * kerndeint = inlink -> dst -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; AVFrame * outpic ; const uint8_t * prvp ; const uint8_t * prvpp ; const uint8_t * prvpn ; const uint8_t * prvppp ; const uint8_t * prvpnn ; const uint8_t * prvp4p ; const uint8_t * prvp4n ; const uint8_t * srcp ; const uint8_t * srcpp ; const uint8_t * srcpn ; const uint8_t * srcppp ; const uint8_t * srcpnn ; const uint8_t * srcp3p ; const uint8_t * srcp3n ; const uint8_t * srcp4p ; const uint8_t * srcp4n ; uint8_t * dstp , * dstp_saved ; const uint8_t * srcp_saved ; int src_linesize , psrc_linesize , dst_linesize , bwidth ; int x , y , plane , val , hi , lo , g , h , n = kerndeint -> frame ++ ; double valf ; const int thresh = kerndeint -> thresh ; const int order = kerndeint -> order ; const int map = kerndeint -> map ; const int sharp = kerndeint -> sharp ; const int twoway = kerndeint -> twoway ; const int is_packed_rgb = kerndeint -> is_packed_rgb ; outpic = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! outpic ) { av_frame_free ( & inpic ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( outpic , inpic ) ; outpic -> interlaced_frame = 0 ; <S2SV_StartBug> for ( plane = 0 ; inpic -> data [ plane ] && plane < 4 ; plane ++ ) { <S2SV_EndBug> h = plane == 0 ? inlink -> h : FF_CEIL_RSHIFT ( inlink -> h , kerndeint -> vsub ) ; bwidth = kerndeint -> tmp_bwidth [ plane ] ; srcp = srcp_saved = inpic -> data [ plane ] ; src_linesize = inpic -> linesize [ plane ] ; psrc_linesize = kerndeint -> tmp_linesize [ plane ] ; dstp = dstp_saved = outpic -> data [ plane ] ; dst_linesize = outpic -> linesize [ plane ] ; srcp = srcp_saved + ( 1 - order ) * src_linesize ; dstp = dstp_saved + ( 1 - order ) * dst_linesize ; for ( y = 0 ; y < h ; y += 2 ) { memcpy ( dstp , srcp , bwidth ) ; srcp += 2 * src_linesize ; dstp += 2 * dst_linesize ; } memcpy ( dstp_saved + order * dst_linesize , srcp_saved + ( 1 - order ) * src_linesize , bwidth ) ; memcpy ( dstp_saved + ( 2 + order ) * dst_linesize , srcp_saved + ( 3 - order ) * src_linesize , bwidth ) ; memcpy ( dstp_saved + ( h - 2 + order ) * dst_linesize , srcp_saved + ( h - 1 - order ) * src_linesize , bwidth ) ; memcpy ( dstp_saved + ( h - 4 + order ) * dst_linesize , srcp_saved + ( h - 3 - order ) * src_linesize , bwidth ) ; prvp = kerndeint -> tmp_data [ plane ] + 5 * psrc_linesize - ( 1 - order ) * psrc_linesize ; prvpp = prvp - psrc_linesize ; prvppp = prvp - 2 * psrc_linesize ; prvp4p = prvp - 4 * psrc_linesize ; prvpn = prvp + psrc_linesize ; prvpnn = prvp + 2 * psrc_linesize ; prvp4n = prvp + 4 * psrc_linesize ; srcp = srcp_saved + 5 * src_linesize - ( 1 - order ) * src_linesize ; srcpp = srcp - src_linesize ; srcppp = srcp - 2 * src_linesize ; srcp3p = srcp - 3 * src_linesize ; srcp4p = srcp - 4 * src_linesize ; srcpn = srcp + src_linesize ; srcpnn = srcp + 2 * src_linesize ; srcp3n = srcp + 3 * src_linesize ; srcp4n = srcp + 4 * src_linesize ; dstp = dstp_saved + 5 * dst_linesize - ( 1 - order ) * dst_linesize ; for ( y = 5 - ( 1 - order ) ; y <= h - 5 - ( 1 - order ) ; y += 2 ) { for ( x = 0 ; x < bwidth ; x ++ ) { if ( thresh == 0 || n == 0 || ( abs ( ( int ) prvp [ x ] - ( int ) srcp [ x ] ) > thresh ) || ( abs ( ( int ) prvpp [ x ] - ( int ) srcpp [ x ] ) > thresh ) || ( abs ( ( int ) prvpn [ x ] - ( int ) srcpn [ x ] ) > thresh ) ) { if ( map ) { g = x & ~ 3 ; if ( is_packed_rgb ) { AV_WB32 ( dstp + g , 0xffffffff ) ; x = g + 3 ; } else if ( inlink -> format == AV_PIX_FMT_YUYV422 ) { AV_WB32 ( dstp + g , 0xeb80eb80 ) ; x = g + 3 ; } else { dstp [ x ] = plane == 0 ? 235 : 128 ; } } else { if ( is_packed_rgb ) { hi = 255 ; lo = 0 ; } else if ( inlink -> format == AV_PIX_FMT_YUYV422 ) { hi = x & 1 ? 240 : 235 ; lo = 16 ; } else { hi = plane == 0 ? 235 : 240 ; lo = 16 ; } if ( sharp ) { if ( twoway ) { valf = + 0.526 * ( ( int ) srcpp [ x ] + ( int ) srcpn [ x ] ) + 0.170 * ( ( int ) srcp [ x ] + ( int ) prvp [ x ] ) - 0.116 * ( ( int ) srcppp [ x ] + ( int ) srcpnn [ x ] + ( int ) prvppp [ x ] + ( int ) prvpnn [ x ] ) - 0.026 * ( ( int ) srcp3p [ x ] + ( int ) srcp3n [ x ] ) + 0.031 * ( ( int ) srcp4p [ x ] + ( int ) srcp4n [ x ] + ( int ) prvp4p [ x ] + ( int ) prvp4n [ x ] ) ; } else { valf = + 0.526 * ( ( int ) srcpp [ x ] + ( int ) srcpn [ x ] ) + 0.170 * ( ( int ) prvp [ x ] ) - 0.116 * ( ( int ) prvppp [ x ] + ( int ) prvpnn [ x ] ) - 0.026 * ( ( int ) srcp3p [ x ] + ( int ) srcp3n [ x ] ) + 0.031 * ( ( int ) prvp4p [ x ] + ( int ) prvp4p [ x ] ) ; } dstp [ x ] = av_clip ( valf , lo , hi ) ; } else { if ( twoway ) { val = ( 8 * ( ( int ) srcpp [ x ] + ( int ) srcpn [ x ] ) + 2 * ( ( int ) srcp [ x ] + ( int ) prvp [ x ] ) - ( int ) ( srcppp [ x ] ) - ( int ) ( srcpnn [ x ] ) - ( int ) ( prvppp [ x ] ) - ( int ) ( prvpnn [ x ] ) ) >> 4 ; } else { val = ( 8 * ( ( int ) srcpp [ x ] + ( int ) srcpn [ x ] ) + 2 * ( ( int ) prvp [ x ] ) - ( int ) ( prvppp [ x ] ) - ( int ) ( prvpnn [ x ] ) ) >> 4 ; } dstp [ x ] = av_clip ( val , lo , hi ) ; } } } else { dstp [ x ] = srcp [ x ] ; } } prvp += 2 * psrc_linesize ; prvpp += 2 * psrc_linesize ; prvppp += 2 * psrc_linesize ; prvpn += 2 * psrc_linesize ; prvpnn += 2 * psrc_linesize ; prvp4p += 2 * psrc_linesize ; prvp4n += 2 * psrc_linesize ; srcp += 2 * src_linesize ; srcpp += 2 * src_linesize ; srcppp += 2 * src_linesize ; srcp3p += 2 * src_linesize ; srcp4p += 2 * src_linesize ; srcpn += 2 * src_linesize ; srcpnn += 2 * src_linesize ; srcp3n += 2 * src_linesize ; srcp4n += 2 * src_linesize ; dstp += 2 * dst_linesize ; } srcp = inpic -> data [ plane ] ; dstp = kerndeint -> tmp_data [ plane ] ; av_image_copy_plane ( dstp , psrc_linesize , srcp , src_linesize , bwidth , h ) ; } av_frame_free ( & inpic ) ; return ff_filter_frame ( outlink , outpic ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> plane < 4 <S2SV_ModStart> plane < 4 && inpic -> data [ plane ] && inpic -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2007-6761\n\n```\nCWE-119 static int __videobuf_mmap_mapper ( struct videobuf_queue * q , struct vm_area_struct * vma ) { struct videbuf_vmalloc_memory * mem ; struct videobuf_mapping * map ; unsigned int first ; int retval ; unsigned long offset = vma -> vm_pgoff << PAGE_SHIFT ; if ( ! ( vma -> vm_flags & VM_WRITE ) || ! ( vma -> vm_flags & VM_SHARED ) ) return - EINVAL ; for ( first = 0 ; first < VIDEO_MAX_FRAME ; first ++ ) { if ( NULL == q -> bufs [ first ] ) continue ; if ( V4L2_MEMORY_MMAP != q -> bufs [ first ] -> memory ) continue ; if ( q -> bufs [ first ] -> boff == offset ) break ; } if ( VIDEO_MAX_FRAME == first ) { dprintk ( 1 , \"mmap<S2SV_blank>app<S2SV_blank>bug:<S2SV_blank>offset<S2SV_blank>invalid<S2SV_blank>[offset=0x%lx]\\\\n\" , ( vma -> vm_pgoff << PAGE_SHIFT ) ) ; return - EINVAL ; } <S2SV_StartBug> map = q -> bufs [ first ] -> map = kmalloc ( sizeof ( struct videobuf_mapping ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( NULL == map ) return - ENOMEM ; map -> start = vma -> vm_start ; map -> end = vma -> vm_end ; map -> q = q ; q -> bufs [ first ] -> baddr = vma -> vm_start ; vma -> vm_ops = & videobuf_vm_ops ; vma -> vm_flags |= VM_DONTEXPAND | VM_RESERVED ; vma -> vm_private_data = map ; mem = q -> bufs [ first ] -> priv ; BUG_ON ( ! mem ) ; MAGIC_CHECK ( mem -> magic , MAGIC_VMAL_MEM ) ; retval = remap_vmalloc_range ( vma , mem -> vmalloc , 0 ) ; if ( retval < 0 ) { dprintk ( 1 , \"mmap:<S2SV_blank>postponing<S2SV_blank>remap_vmalloc_range\\\\n\" ) ; mem -> vma = kmalloc ( sizeof ( * vma ) , GFP_KERNEL ) ; if ( ! mem -> vma ) { kfree ( map ) ; q -> bufs [ first ] -> map = NULL ; return - ENOMEM ; } memcpy ( mem -> vma , vma , sizeof ( * vma ) ) ; } dprintk ( 1 , \"mmap<S2SV_blank>%p:<S2SV_blank>q=%p<S2SV_blank>%08lx-%08lx<S2SV_blank>(%lx)<S2SV_blank>pgoff<S2SV_blank>%08lx<S2SV_blank>buf<S2SV_blank>%d\\\\n\" , map , q , vma -> vm_start , vma -> vm_end , ( long int ) q -> bufs [ first ] -> bsize , vma -> vm_pgoff , first ) ; videobuf_vm_open ( vma ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> map = kzalloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12232\n\n```\nCWE-362 static int sockfs_setattr ( struct dentry * dentry , struct iattr * iattr ) { int err = simple_setattr ( dentry , iattr ) ; if ( ! err && ( iattr -> ia_valid & ATTR_UID ) ) { struct socket * sock = SOCKET_I ( d_inode ( dentry ) ) ; <S2SV_StartBug> sock -> sk -> sk_uid = iattr -> ia_uid ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( sock -> sk ) <S2SV_ModStart> -> ia_uid ; else err = - ENOENT ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int udp_sendmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len ) { struct inet_sock * inet = inet_sk ( sk ) ; struct udp_sock * up = udp_sk ( sk ) ; struct flowi4 * fl4 ; int ulen = len ; struct ipcm_cookie ipc ; struct rtable * rt = NULL ; int free = 0 ; int connected = 0 ; __be32 daddr , faddr , saddr ; __be16 dport ; u8 tos ; int err , is_udplite = IS_UDPLITE ( sk ) ; int corkreq = up -> corkflag || msg -> msg_flags & MSG_MORE ; int ( * getfrag ) ( void * , char * , int , int , int , struct sk_buff * ) ; <S2SV_StartBug> struct sk_buff * skb ; <S2SV_EndBug> if ( len > 0xFFFF ) return - EMSGSIZE ; if ( msg -> msg_flags & MSG_OOB ) return - EOPNOTSUPP ; ipc . opt = NULL ; ipc . tx_flags = 0 ; getfrag = is_udplite ? udplite_getfrag : ip_generic_getfrag ; if ( up -> pending ) { lock_sock ( sk ) ; if ( likely ( up -> pending ) ) { if ( unlikely ( up -> pending != AF_INET ) ) { release_sock ( sk ) ; return - EINVAL ; } goto do_append_data ; } release_sock ( sk ) ; } ulen += sizeof ( struct udphdr ) ; if ( msg -> msg_name ) { struct sockaddr_in * usin = ( struct sockaddr_in * ) msg -> msg_name ; if ( msg -> msg_namelen < sizeof ( * usin ) ) return - EINVAL ; if ( usin -> sin_family != AF_INET ) { if ( usin -> sin_family != AF_UNSPEC ) return - EAFNOSUPPORT ; } daddr = usin -> sin_addr . s_addr ; dport = usin -> sin_port ; if ( dport == 0 ) return - EINVAL ; } else { if ( sk -> sk_state != TCP_ESTABLISHED ) return - EDESTADDRREQ ; daddr = inet -> inet_daddr ; dport = inet -> inet_dport ; connected = 1 ; } ipc . addr = inet -> inet_saddr ; ipc . oif = sk -> sk_bound_dev_if ; err = sock_tx_timestamp ( sk , & ipc . tx_flags ) ; if ( err ) return err ; if ( msg -> msg_controllen ) { err = ip_cmsg_send ( sock_net ( sk ) , msg , & ipc ) ; if ( err ) return err ; if ( ipc . opt ) free = 1 ; connected = 0 ; } if ( ! ipc . opt ) <S2SV_StartBug> ipc . opt = inet -> opt ; <S2SV_EndBug> saddr = ipc . addr ; ipc . addr = faddr = daddr ; <S2SV_StartBug> if ( ipc . opt && ipc . opt -> srr ) { <S2SV_EndBug> if ( ! daddr ) return - EINVAL ; <S2SV_StartBug> faddr = ipc . opt -> faddr ; <S2SV_EndBug> connected = 0 ; } tos = RT_TOS ( inet -> tos ) ; if ( sock_flag ( sk , SOCK_LOCALROUTE ) || ( msg -> msg_flags & MSG_DONTROUTE ) || <S2SV_StartBug> ( ipc . opt && ipc . opt -> is_strictroute ) ) { <S2SV_EndBug> tos |= RTO_ONLINK ; connected = 0 ; } if ( ipv4_is_multicast ( daddr ) ) { if ( ! ipc . oif ) ipc . oif = inet -> mc_index ; if ( ! saddr ) saddr = inet -> mc_addr ; connected = 0 ; } if ( connected ) rt = ( struct rtable * ) sk_dst_check ( sk , 0 ) ; if ( rt == NULL ) { struct flowi4 fl4 ; struct net * net = sock_net ( sk ) ; flowi4_init_output ( & fl4 , ipc . oif , sk -> sk_mark , tos , RT_SCOPE_UNIVERSE , sk -> sk_protocol , inet_sk_flowi_flags ( sk ) | FLOWI_FLAG_CAN_SLEEP , faddr , saddr , dport , inet -> inet_sport ) ; security_sk_classify_flow ( sk , flowi4_to_flowi ( & fl4 ) ) ; rt = ip_route_output_flow ( net , & fl4 , sk ) ; if ( IS_ERR ( rt ) ) { err = PTR_ERR ( rt ) ; rt = NULL ; if ( err == - ENETUNREACH ) IP_INC_STATS_BH ( net , IPSTATS_MIB_OUTNOROUTES ) ; goto out ; } err = - EACCES ; if ( ( rt -> rt_flags & RTCF_BROADCAST ) && ! sock_flag ( sk , SOCK_BROADCAST ) ) goto out ; if ( connected ) sk_dst_set ( sk , dst_clone ( & rt -> dst ) ) ; } if ( msg -> msg_flags & MSG_CONFIRM ) goto do_confirm ; back_from_confirm : saddr = rt -> rt_src ; if ( ! ipc . addr ) daddr = ipc . addr = rt -> rt_dst ; if ( ! corkreq ) { skb = ip_make_skb ( sk , getfrag , msg -> msg_iov , ulen , sizeof ( struct udphdr ) , & ipc , & rt , msg -> msg_flags ) ; err = PTR_ERR ( skb ) ; if ( skb && ! IS_ERR ( skb ) ) err = udp_send_skb ( skb , daddr , dport ) ; goto out ; } lock_sock ( sk ) ; if ( unlikely ( up -> pending ) ) { release_sock ( sk ) ; LIMIT_NETDEBUG ( KERN_DEBUG \"udp<S2SV_blank>cork<S2SV_blank>app<S2SV_blank>bug<S2SV_blank>2\\\\n\" ) ; err = - EINVAL ; goto out ; } fl4 = & inet -> cork . fl . u . ip4 ; fl4 -> daddr = daddr ; fl4 -> saddr = saddr ; fl4 -> fl4_dport = dport ; fl4 -> fl4_sport = inet -> inet_sport ; up -> pending = AF_INET ; do_append_data : up -> len += ulen ; err = ip_append_data ( sk , getfrag , msg -> msg_iov , ulen , sizeof ( struct udphdr ) , & ipc , & rt , corkreq ? msg -> msg_flags | MSG_MORE : msg -> msg_flags ) ; if ( err ) udp_flush_pending_frames ( sk ) ; else if ( ! corkreq ) err = udp_push_pending_frames ( sk ) ; else if ( unlikely ( skb_queue_empty ( & sk -> sk_write_queue ) ) ) up -> pending = 0 ; release_sock ( sk ) ; out : ip_rt_put ( rt ) ; if ( free ) kfree ( ipc . opt ) ; if ( ! err ) return len ; if ( err == - ENOBUFS || test_bit ( SOCK_NOSPACE , & sk -> sk_socket -> flags ) ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_SNDBUFERRORS , is_udplite ) ; } return err ; do_confirm : dst_confirm ( & rt -> dst ) ; if ( ! ( msg -> msg_flags & MSG_PROBE ) || len ) goto back_from_confirm ; err = 0 ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk_buff * skb ; struct ip_options_data opt_copy <S2SV_ModStart> . opt ) { struct ip_options_rcu * inet_opt ; rcu_read_lock ( ) ; inet_opt = rcu_dereference ( inet -> inet_opt ) ; if ( inet_opt ) { memcpy ( & opt_copy , inet_opt , sizeof ( * inet_opt ) + inet_opt -> opt . optlen ) ; ipc . opt = & opt_copy . opt ; } rcu_read_unlock ( ) ; } <S2SV_ModEnd> saddr = ipc <S2SV_ModStart> . opt -> opt . <S2SV_ModStart> . opt -> opt . <S2SV_ModStart> . opt -> opt .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-362 static void userfaultfd_event_wait_completion ( struct userfaultfd_ctx * ctx , struct userfaultfd_wait_queue * ewq ) { struct userfaultfd_ctx * release_new_ctx ; if ( WARN_ON_ONCE ( current -> flags & PF_EXITING ) ) goto out ; ewq -> ctx = ctx ; init_waitqueue_entry ( & ewq -> wq , current ) ; release_new_ctx = NULL ; spin_lock ( & ctx -> event_wqh . lock ) ; __add_wait_queue ( & ctx -> event_wqh , & ewq -> wq ) ; for ( ; ; ) { set_current_state ( TASK_KILLABLE ) ; if ( ewq -> msg . event == 0 ) break ; if ( READ_ONCE ( ctx -> released ) || fatal_signal_pending ( current ) ) { __remove_wait_queue ( & ctx -> event_wqh , & ewq -> wq ) ; if ( ewq -> msg . event == UFFD_EVENT_FORK ) { struct userfaultfd_ctx * new ; new = ( struct userfaultfd_ctx * ) ( unsigned long ) ewq -> msg . arg . reserved . reserved1 ; release_new_ctx = new ; } break ; } spin_unlock ( & ctx -> event_wqh . lock ) ; wake_up_poll ( & ctx -> fd_wqh , EPOLLIN ) ; schedule ( ) ; spin_lock ( & ctx -> event_wqh . lock ) ; } __set_current_state ( TASK_RUNNING ) ; spin_unlock ( & ctx -> event_wqh . lock ) ; if ( release_new_ctx ) { struct vm_area_struct * vma ; struct mm_struct * mm = release_new_ctx -> mm ; down_write ( & mm -> mmap_sem ) ; <S2SV_StartBug> for ( vma = mm -> mmap ; vma ; vma = vma -> vm_next ) <S2SV_EndBug> if ( vma -> vm_userfaultfd_ctx . ctx == release_new_ctx ) { vma -> vm_userfaultfd_ctx = NULL_VM_UFFD_CTX ; vma -> vm_flags &= ~ ( VM_UFFD_WP | VM_UFFD_MISSING ) ; } up_write ( & mm -> mmap_sem ) ; userfaultfd_ctx_put ( release_new_ctx ) ; } out : WRITE_ONCE ( ctx -> mmap_changing , false ) ; userfaultfd_ctx_put ( ctx ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mmap_sem ) ; VM_WARN_ON ( ! mmget_still_valid ( mm ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_ext_handle_uninitialized_extents ( handle_t * handle , struct inode * inode , struct ext4_map_blocks * map , struct ext4_ext_path * path , int flags , unsigned int allocated , ext4_fsblk_t newblock ) { int ret = 0 ; int err = 0 ; ext4_io_end_t * io = ext4_inode_aio ( inode ) ; ext_debug ( \"ext4_ext_handle_uninitialized_extents:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical<S2SV_blank>\" \"block<S2SV_blank>%llu,<S2SV_blank>max_blocks<S2SV_blank>%u,<S2SV_blank>flags<S2SV_blank>%x,<S2SV_blank>allocated<S2SV_blank>%u\\\\n\" , inode -> i_ino , ( unsigned long long ) map -> m_lblk , map -> m_len , flags , allocated ) ; ext4_ext_show_leaf ( inode , path ) ; trace_ext4_ext_handle_uninitialized_extents ( inode , map , allocated , newblock ) ; if ( ( flags & EXT4_GET_BLOCKS_PRE_IO ) ) { ret = ext4_split_unwritten_extents ( handle , inode , map , path , flags ) ; if ( ret <= 0 ) goto out ; if ( io ) ext4_set_io_unwritten_flag ( inode , io ) ; else ext4_set_inode_state ( inode , EXT4_STATE_DIO_UNWRITTEN ) ; if ( ext4_should_dioread_nolock ( inode ) ) map -> m_flags |= EXT4_MAP_UNINIT ; goto out ; } if ( ( flags & EXT4_GET_BLOCKS_CONVERT ) ) { <S2SV_StartBug> ret = ext4_convert_unwritten_extents_endio ( handle , inode , <S2SV_EndBug> path ) ; if ( ret >= 0 ) { ext4_update_inode_fsync_trans ( handle , inode , 1 ) ; err = check_eofblocks_fl ( handle , inode , map -> m_lblk , path , map -> m_len ) ; } else err = ret ; goto out2 ; } if ( flags & EXT4_GET_BLOCKS_UNINIT_EXT ) goto map_out ; if ( ( flags & EXT4_GET_BLOCKS_CREATE ) == 0 ) { map -> m_flags |= EXT4_MAP_UNWRITTEN ; goto out1 ; } ret = ext4_ext_convert_to_initialized ( handle , inode , map , path ) ; if ( ret >= 0 ) ext4_update_inode_fsync_trans ( handle , inode , 1 ) ; out : if ( ret <= 0 ) { err = ret ; goto out2 ; } else allocated = ret ; map -> m_flags |= EXT4_MAP_NEW ; if ( allocated > map -> m_len ) { unmap_underlying_metadata_blocks ( inode -> i_sb -> s_bdev , newblock + map -> m_len , allocated - map -> m_len ) ; allocated = map -> m_len ; } if ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) { unsigned int reserved_clusters ; reserved_clusters = get_reserved_cluster_alloc ( inode , map -> m_lblk , map -> m_len ) ; if ( reserved_clusters ) ext4_da_update_reserve_space ( inode , reserved_clusters , 0 ) ; } map_out : map -> m_flags |= EXT4_MAP_MAPPED ; if ( ( flags & EXT4_GET_BLOCKS_KEEP_SIZE ) == 0 ) { err = check_eofblocks_fl ( handle , inode , map -> m_lblk , path , map -> m_len ) ; if ( err < 0 ) goto out2 ; } out1 : if ( allocated > map -> m_len ) allocated = map -> m_len ; ext4_ext_show_leaf ( inode , path ) ; map -> m_pblk = newblock ; map -> m_len = allocated ; out2 : if ( path ) { ext4_ext_drop_refs ( path ) ; kfree ( path ) ; } return err ? err : allocated ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , inode , map ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6763\n\n```\nCWE-119 static int uio_mmap_physical ( struct vm_area_struct * vma ) { struct uio_device * idev = vma -> vm_private_data ; int mi = uio_find_mem_index ( vma ) ; <S2SV_StartBug> if ( mi < 0 ) <S2SV_EndBug> return - EINVAL ; vma -> vm_ops = & uio_physical_vm_ops ; vma -> vm_page_prot = pgprot_noncached ( vma -> vm_page_prot ) ; return remap_pfn_range ( vma , vma -> vm_start , <S2SV_StartBug> idev -> info -> mem [ mi ] . addr >> PAGE_SHIFT , <S2SV_EndBug> vma -> vm_end - vma -> vm_start , vma -> vm_page_prot ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vma ) ; struct uio_mem * mem ; <S2SV_ModStart> mi < 0 ) return - EINVAL ; mem = idev -> info -> mem + mi ; if ( vma -> vm_end - vma -> vm_start > mem -> size <S2SV_ModStart> -> vm_start , mem -> <S2SV_ModEnd> addr >> PAGE_SHIFT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-347(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12607\n\n```\nCWE-347 void pointZZ_pAdd ( PointZZ_p * rop , const PointZZ_p * op1 , const PointZZ_p * op2 , const CurveZZ_p * curve ) { <S2SV_StartBug> mpz_t xdiff , ydiff , lambda ; <S2SV_EndBug> mpz_inits ( xdiff , ydiff , lambda , NULL ) ; mpz_sub ( ydiff , op2 -> y , op1 -> y ) ; mpz_sub ( xdiff , op2 -> x , op1 -> x ) ; mpz_invert ( xdiff , xdiff , curve -> p ) ; mpz_mul ( lambda , ydiff , xdiff ) ; mpz_mod ( lambda , lambda , curve -> p ) ; mpz_mul ( rop -> x , lambda , lambda ) ; mpz_sub ( rop -> x , rop -> x , op1 -> x ) ; mpz_sub ( rop -> x , rop -> x , op2 -> x ) ; mpz_mod ( rop -> x , rop -> x , curve -> p ) ; mpz_sub ( rop -> y , op1 -> x , rop -> x ) ; mpz_mul ( rop -> y , lambda , rop -> y ) ; mpz_sub ( rop -> y , rop -> y , op1 -> y ) ; mpz_mod ( rop -> y , rop -> y , curve -> p ) ; <S2SV_StartBug> mpz_clears ( xdiff , ydiff , lambda , NULL ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> curve ) { if ( pointZZ_pIsIdentityElement ( op1 ) && pointZZ_pIsIdentityElement ( op2 ) ) { return pointZZ_pSetToIdentityElement ( rop ) ; } else if ( pointZZ_pIsIdentityElement ( op1 ) ) { mpz_set ( rop -> x , op2 -> x ) ; mpz_set ( rop -> y , op2 -> y ) ; return ; } else if ( pointZZ_pIsIdentityElement ( op2 ) ) { mpz_set ( rop -> x , op1 -> x ) ; mpz_set ( rop -> y , op1 -> y ) ; return ; } if ( pointZZ_pEqual ( op1 , op2 ) ) { pointZZ_pDouble ( rop , op1 , curve ) ; return ; } mpz_t negy ; mpz_init ( negy ) ; mpz_sub ( negy , curve -> p , op2 -> y ) ; if ( mpz_cmp ( op1 -> x , op2 -> x ) == 0 && mpz_cmp ( op1 -> y , negy ) == 0 ) { mpz_clear ( negy ) ; return pointZZ_pSetToIdentityElement ( rop ) ; } mpz_t <S2SV_ModEnd> xdiff , ydiff <S2SV_ModStart> ; mpz_clears ( negy ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 static Bool FFD_CanHandleURL ( GF_InputService * plug , const char * url ) { Bool has_audio , has_video ; s32 i ; AVFormatContext * ctx ; AVOutputFormat * fmt_out ; Bool ret = GF_FALSE ; <S2SV_StartBug> char * ext , szName [ 1000 ] , szExt [ 20 ] ; <S2SV_EndBug> const char * szExtList ; FFDemux * ffd ; if ( ! plug || ! url ) return GF_FALSE ; if ( ! strnicmp ( url , \"rtsp://\" , 7 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"rtspu://\" , 8 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"rtp://\" , 6 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"plato://\" , 8 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"udp://\" , 6 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"tcp://\" , 6 ) ) return GF_FALSE ; if ( ! strnicmp ( url , \"data:\" , 5 ) ) return GF_FALSE ; ffd = ( FFDemux * ) plug -> priv ; <S2SV_StartBug> strcpy ( szName , url ) ; <S2SV_EndBug> ext = strrchr ( szName , '#' ) ; if ( ext ) ext [ 0 ] = 0 ; ext = strrchr ( szName , '?' ) ; if ( ext ) ext [ 0 ] = 0 ; ext = strrchr ( szName , '.' ) ; if ( ext && strlen ( ext ) > 19 ) ext = NULL ; <S2SV_StartBug> if ( ext && strlen ( ext ) > 1 ) { <S2SV_EndBug> strcpy ( szExt , & ext [ 1 ] ) ; strlwr ( szExt ) ; # ifndef FFMPEG_DEMUX_ENABLE_MPEG2TS if ( strstr ( \"ts<S2SV_blank>m2t<S2SV_blank>mts<S2SV_blank>dmb<S2SV_blank>trp\" , szExt ) ) return GF_FALSE ; # endif if ( ! strcmp ( szExt , \"mp4\" ) || ! strcmp ( szExt , \"mpg4\" ) || ! strcmp ( szExt , \"m4a\" ) || ! strcmp ( szExt , \"m21\" ) || ! strcmp ( szExt , \"m4v\" ) || ! strcmp ( szExt , \"m4a\" ) || ! strcmp ( szExt , \"m4s\" ) || ! strcmp ( szExt , \"3gs\" ) || ! strcmp ( szExt , \"3gp\" ) || ! strcmp ( szExt , \"3gpp\" ) || ! strcmp ( szExt , \"3gp2\" ) || ! strcmp ( szExt , \"3g2\" ) || ! strcmp ( szExt , \"mp3\" ) || ! strcmp ( szExt , \"ac3\" ) || ! strcmp ( szExt , \"amr\" ) || ! strcmp ( szExt , \"bt\" ) || ! strcmp ( szExt , \"wrl\" ) || ! strcmp ( szExt , \"x3dv\" ) || ! strcmp ( szExt , \"xmt\" ) || ! strcmp ( szExt , \"xmta\" ) || ! strcmp ( szExt , \"x3d\" ) || ! strcmp ( szExt , \"jpg\" ) || ! strcmp ( szExt , \"jpeg\" ) || ! strcmp ( szExt , \"png\" ) ) return GF_FALSE ; { u32 i ; for ( i = 0 ; FFD_MIME_TYPES [ i ] ; i += 3 ) { if ( gf_service_check_mime_register ( plug , FFD_MIME_TYPES [ i ] , FFD_MIME_TYPES [ i + 1 ] , FFD_MIME_TYPES [ i + 2 ] , ext ) ) return GF_TRUE ; } } } ffd_parse_options ( ffd , url ) ; ctx = NULL ; if ( open_file ( & ctx , szName , NULL , ffd -> options ? & ffd -> options : NULL ) < 0 ) { AVInputFormat * av_in = NULL ; if ( ext && ! strcmp ( szExt , \"cmp\" ) ) av_in = av_find_input_format ( \"m4v\" ) ; if ( open_file ( & ctx , szName , av_in , ffd -> options ? & ffd -> options : NULL ) < 0 ) { return GF_FALSE ; } } if ( ! ctx ) goto exit ; if ( av_find_stream_info ( ctx ) < 0 ) goto exit ; has_video = has_audio = GF_FALSE ; for ( i = 0 ; i < ( s32 ) ctx -> nb_streams ; i ++ ) { AVCodecContext * enc = ctx -> streams [ i ] -> codec ; switch ( enc -> codec_type ) { case AVMEDIA_TYPE_AUDIO : if ( ! has_audio ) has_audio = GF_TRUE ; break ; case AVMEDIA_TYPE_VIDEO : if ( ! has_video ) has_video = GF_TRUE ; break ; default : break ; } } if ( ! has_audio && ! has_video ) goto exit ; ret = GF_TRUE ; # if ( ( LIBAVFORMAT_VERSION_MAJOR == 52 ) && ( LIBAVFORMAT_VERSION_MINOR <= 47 ) ) || ( LIBAVFORMAT_VERSION_MAJOR < 52 ) fmt_out = guess_stream_format ( NULL , url , NULL ) ; # else fmt_out = av_guess_format ( NULL , url , NULL ) ; # endif if ( fmt_out ) gf_service_register_mime ( plug , fmt_out -> mime_type , fmt_out -> extensions , fmt_out -> name ) ; else { ext = strrchr ( szName , '.' ) ; if ( ext ) { strcpy ( szExt , & ext [ 1 ] ) ; strlwr ( szExt ) ; szExtList = gf_modules_get_option ( ( GF_BaseInterface * ) plug , \"MimeTypes\" , \"application/x-ffmpeg\" ) ; if ( ! szExtList ) { gf_service_register_mime ( plug , \"application/x-ffmpeg\" , szExt , \"Other<S2SV_blank>Movies<S2SV_blank>(FFMPEG)\" ) ; } else if ( ! strstr ( szExtList , szExt ) ) { u32 len ; char * buf ; len = ( u32 ) ( strlen ( szExtList ) + strlen ( szExt ) + 10 ) ; buf = ( char * ) gf_malloc ( sizeof ( char ) * len ) ; sprintf ( buf , \"\\\\\"%s<S2SV_blank>\" , szExt ) ; strcat ( buf , & szExtList [ 1 ] ) ; gf_modules_set_option ( ( GF_BaseInterface * ) plug , \"MimeTypes\" , \"application/x-ffmpeg\" , buf ) ; gf_free ( buf ) ; } } } exit : # if FF_API_CLOSE_INPUT_FILE if ( ctx ) av_close_input_file ( ctx ) ; # else if ( ctx ) avformat_close_input ( & ctx ) ; # endif return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , szName [ 1024 <S2SV_ModEnd> ] , szExt <S2SV_ModStart> -> priv ; if ( strlen ( url ) >= sizeof ( szName ) ) return GF_FALSE ; <S2SV_ModStart> ) > 1 && strlen ( ext ) <= sizeof ( szExt )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9084\n\n```\nCWE-190 static int vfio_msi_enable ( struct vfio_pci_device * vdev , int nvec , bool msix ) { struct pci_dev * pdev = vdev -> pdev ; unsigned int flag = msix ? PCI_IRQ_MSIX : PCI_IRQ_MSI ; int ret ; if ( ! is_irq_none ( vdev ) ) return - EINVAL ; <S2SV_StartBug> vdev -> ctx = kzalloc ( nvec * sizeof ( struct vfio_pci_irq_ctx ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! vdev -> ctx ) return - ENOMEM ; ret = pci_alloc_irq_vectors ( pdev , 1 , nvec , flag ) ; if ( ret < nvec ) { if ( ret > 0 ) pci_free_irq_vectors ( pdev ) ; kfree ( vdev -> ctx ) ; return ret ; } vdev -> num_ctx = nvec ; vdev -> irq_type = msix ? VFIO_PCI_MSIX_IRQ_INDEX : VFIO_PCI_MSI_IRQ_INDEX ; if ( ! msix ) { vdev -> msi_qmax = fls ( nvec * 2 - 1 ) - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ctx = kcalloc ( nvec , <S2SV_ModEnd> sizeof ( struct\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6542\n\n```\nCWE-200 static int llc_ui_getname ( struct socket * sock , struct sockaddr * uaddr , int * uaddrlen , int peer ) { struct sockaddr_llc sllc ; struct sock * sk = sock -> sk ; struct llc_sock * llc = llc_sk ( sk ) ; <S2SV_StartBug> int rc = 0 ; <S2SV_EndBug> memset ( & sllc , 0 , sizeof ( sllc ) ) ; lock_sock ( sk ) ; if ( sock_flag ( sk , SOCK_ZAPPED ) ) goto out ; <S2SV_StartBug> * uaddrlen = sizeof ( sllc ) ; <S2SV_EndBug> memset ( uaddr , 0 , * uaddrlen ) ; if ( peer ) { rc = - ENOTCONN ; if ( sk -> sk_state != TCP_ESTABLISHED ) goto out ; if ( llc -> dev ) sllc . sllc_arphrd = llc -> dev -> type ; sllc . sllc_sap = llc -> daddr . lsap ; memcpy ( & sllc . sllc_mac , & llc -> daddr . mac , IFHWADDRLEN ) ; } else { rc = - EINVAL ; if ( ! llc -> sap ) goto out ; sllc . sllc_sap = llc -> sap -> laddr . lsap ; if ( llc -> dev ) { sllc . sllc_arphrd = llc -> dev -> type ; memcpy ( & sllc . sllc_mac , llc -> dev -> dev_addr , IFHWADDRLEN ) ; } } rc = 0 ; sllc . sllc_family = AF_LLC ; memcpy ( uaddr , & sllc , sizeof ( sllc ) ) ; out : release_sock ( sk ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int rc = - EBADF ; memset ( & sllc , 0 <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> sizeof ( sllc <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-79(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010247\n\n```\nCWE-79 static int oidc_handle_session_management_iframe_rp ( request_rec * r , oidc_cfg * c , oidc_session_t * session , const char * client_id , const char * check_session_iframe ) { oidc_debug ( r , \"enter\" ) ; const char * java_script = \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><script<S2SV_blank>type=\\\\\"text/javascript\\\\\">\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>var<S2SV_blank>targetOrigin<S2SV_blank><S2SV_blank>=<S2SV_blank>\\'%s\\';\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>var<S2SV_blank>message<S2SV_blank>=<S2SV_blank>\\'%s\\'<S2SV_blank>+<S2SV_blank>\\'<S2SV_blank>\\'<S2SV_blank>+<S2SV_blank>\\'%s\\';\\\\n\" \"\\t<S2SV_blank><S2SV_blank><S2SV_blank>var<S2SV_blank>timerID;\\\\n\" \"\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>function<S2SV_blank>checkSession()<S2SV_blank>{\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>console.debug(\\'checkSession:<S2SV_blank>posting<S2SV_blank>\\'<S2SV_blank>+<S2SV_blank>message<S2SV_blank>+<S2SV_blank>\\'<S2SV_blank>to<S2SV_blank>\\'<S2SV_blank>+<S2SV_blank>targetOrigin);\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>var<S2SV_blank>win<S2SV_blank>=<S2SV_blank>window.parent.document.getElementById(\\'%s\\').contentWindow;\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>win.postMessage(<S2SV_blank>message,<S2SV_blank>targetOrigin);\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\\\\n\" \"\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>function<S2SV_blank>setTimer()<S2SV_blank>{\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>checkSession();\\\\n\" <S2SV_StartBug> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>timerID<S2SV_blank>=<S2SV_blank>setInterval(\\'checkSession()\\',<S2SV_blank>%s);\\\\n\" <S2SV_EndBug> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\\\\n\" \"\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>function<S2SV_blank>receiveMessage(e)<S2SV_blank>{\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>console.debug(\\'receiveMessage:<S2SV_blank>\\'<S2SV_blank>+<S2SV_blank>e.data<S2SV_blank>+<S2SV_blank>\\'<S2SV_blank>from<S2SV_blank>\\'<S2SV_blank>+<S2SV_blank>e.origin);\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>if<S2SV_blank>(e.origin<S2SV_blank>!==<S2SV_blank>targetOrigin<S2SV_blank>)<S2SV_blank>{\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>console.debug(\\'receiveMessage:<S2SV_blank>cross-site<S2SV_blank>scripting<S2SV_blank>attack?\\');\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>return;\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>if<S2SV_blank>(e.data<S2SV_blank>!=<S2SV_blank>\\'unchanged\\')<S2SV_blank>{\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>clearInterval(timerID);\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>if<S2SV_blank>(e.data<S2SV_blank>==<S2SV_blank>\\'changed\\')<S2SV_blank>{\\\\n\" \"\\t\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>window.location.href<S2SV_blank>=<S2SV_blank>\\'%s?session=check\\';\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}<S2SV_blank>else<S2SV_blank>{\\\\n\" \"\\t\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>window.location.href<S2SV_blank>=<S2SV_blank>\\'%s?session=logout\\';\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\\\\n\" \"\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>window.addEventListener(\\'message\\',<S2SV_blank>receiveMessage,<S2SV_blank>false);\\\\n\" \"\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank></script>\\\\n\" ; char * origin = apr_pstrdup ( r -> pool , check_session_iframe ) ; apr_uri_t uri ; apr_uri_parse ( r -> pool , check_session_iframe , & uri ) ; char * p = strstr ( origin , uri . path ) ; * p = '\\\\0' ; const char * op_iframe_id = \"openidc-op\" ; const char * session_state = oidc_session_get_session_state ( r , session ) ; if ( session_state == NULL ) { oidc_warn ( r , \"no<S2SV_blank>session_state<S2SV_blank>found<S2SV_blank>in<S2SV_blank>the<S2SV_blank>session;<S2SV_blank>the<S2SV_blank>OP<S2SV_blank>does<S2SV_blank>probably<S2SV_blank>not<S2SV_blank>support<S2SV_blank>session<S2SV_blank>management!?\" ) ; return DONE ; } char * s_poll_interval = NULL ; oidc_util_get_request_parameter ( r , \"poll\" , & s_poll_interval ) ; <S2SV_StartBug> if ( s_poll_interval == NULL ) <S2SV_EndBug> s_poll_interval = \"3000\" ; const char * redirect_uri = oidc_get_redirect_uri ( r , c ) ; java_script = apr_psprintf ( r -> pool , java_script , origin , client_id , <S2SV_StartBug> session_state , op_iframe_id , s_poll_interval , redirect_uri , <S2SV_EndBug> redirect_uri ) ; return oidc_util_html_send ( r , NULL , java_script , \"setTimer\" , NULL , DONE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>function<S2SV_blank>setTimer()<S2SV_blank>{\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>checkSession();\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>timerID<S2SV_blank>=<S2SV_blank>setInterval(\\'checkSession()\\',<S2SV_blank>%d);\\\\n\" <S2SV_ModEnd> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\\\\n\" \"\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>function<S2SV_blank>receiveMessage(e)<S2SV_blank>{\\\\n\" <S2SV_ModStart> s_poll_interval ) ; int poll_interval = s_poll_interval ? strtol ( s_poll_interval , NULL , 10 ) : 0 ; if ( ( poll_interval <= 0 ) || ( poll_interval > 3600 * 24 ) ) poll_interval = 3000 <S2SV_ModEnd> ; const char <S2SV_ModStart> , op_iframe_id , poll_interval <S2SV_ModEnd> , redirect_uri ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6198\n\n```\nCWE-59 void w3m_exit ( int i ) { # ifdef USE_MIGEMO init_migemo ( ) ; # endif stopDownload ( ) ; deleteFiles ( ) ; # ifdef USE_SSL free_ssl_ctx ( ) ; # endif disconnectFTP ( ) ; # ifdef USE_NNTP disconnectNews ( ) ; # endif # ifdef __MINGW32_VERSION WSACleanup ( ) ; # endif <S2SV_StartBug> exit ( i ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif # ifdef HAVE_MKDTEMP if ( no_rc_dir && tmp_dir != rc_dir ) if ( rmdir ( tmp_dir ) != 0 ) { fprintf ( stderr , \"Can\\'t<S2SV_blank>remove<S2SV_blank>temporary<S2SV_blank>directory<S2SV_blank>(%s)!\\\\n\" , tmp_dir ) ; exit ( 1 ) ; } # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5350\n\n```\nCWE-399 static int dissect_spoolss_uint16uni ( tvbuff_t * tvb , int offset , packet_info * pinfo _U_ , proto_tree * tree , guint8 * drep _U_ , char * * data , int hf_name ) { gint len , remaining ; char * text ; if ( offset % 2 ) offset += 2 - ( offset % 2 ) ; <S2SV_StartBug> remaining = tvb_captured_length_remaining ( tvb , offset ) ; <S2SV_EndBug> if ( remaining <= 0 ) { if ( data ) * data = g_strdup ( \"\" ) ; return offset ; } text = tvb_get_string_enc ( NULL , tvb , offset , remaining , ENC_UTF_16 | ENC_LITTLE_ENDIAN ) ; len = ( int ) strlen ( text ) ; proto_tree_add_string ( tree , hf_name , tvb , offset , len * 2 , text ) ; if ( data ) * data = text ; else g_free ( text ) ; return offset + ( len + 1 ) * 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; remaining = tvb_reported_length_remaining <S2SV_ModEnd> ( tvb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12904\n\n```\nCWE-000 static int nested_vmx_check_permission ( struct kvm_vcpu * vcpu ) <S2SV_StartBug> { <S2SV_EndBug> if ( ! to_vmx ( vcpu ) -> nested . vmxon ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu ) { if ( vmx_get_cpl ( vcpu ) ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6874\n\n```\nCWE-416 static void put_ucounts ( struct ucounts * ucounts ) { unsigned long flags ; <S2SV_StartBug> if ( atomic_dec_and_test ( & ucounts -> count ) ) { <S2SV_EndBug> spin_lock_irqsave ( & ucounts_lock , flags ) ; <S2SV_StartBug> hlist_del_init ( & ucounts -> node ) ; <S2SV_EndBug> spin_unlock_irqrestore ( & ucounts_lock , flags ) ; kfree ( ucounts ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long flags ; <S2SV_ModEnd> spin_lock_irqsave ( & <S2SV_ModStart> flags ) ; ucounts -> count -= 1 ; if ( ! ucounts -> count ) <S2SV_ModStart> -> node ) ; else ucounts = NULL <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vpx_img_set_rect ( vpx_image_t * img , unsigned int x , unsigned int y , unsigned int w , unsigned int h ) { unsigned char * data ; if ( x + w <= img -> w && y + h <= img -> h ) { img -> d_w = w ; img -> d_h = h ; if ( ! ( img -> fmt & VPX_IMG_FMT_PLANAR ) ) { img -> planes [ VPX_PLANE_PACKED ] = img -> img_data + x * img -> bps / 8 + y * img -> stride [ VPX_PLANE_PACKED ] ; } else { <S2SV_StartBug> data = img -> img_data ; <S2SV_EndBug> if ( img -> fmt & VPX_IMG_FMT_HAS_ALPHA ) { img -> planes [ VPX_PLANE_ALPHA ] = <S2SV_StartBug> data + x + y * img -> stride [ VPX_PLANE_ALPHA ] ; <S2SV_EndBug> data += img -> h * img -> stride [ VPX_PLANE_ALPHA ] ; } <S2SV_StartBug> img -> planes [ VPX_PLANE_Y ] = data + x + y * img -> stride [ VPX_PLANE_Y ] ; <S2SV_EndBug> data += img -> h * img -> stride [ VPX_PLANE_Y ] ; if ( ! ( img -> fmt & VPX_IMG_FMT_UV_FLIP ) ) { <S2SV_StartBug> img -> planes [ VPX_PLANE_U ] = data <S2SV_EndBug> + ( x >> img -> x_chroma_shift ) <S2SV_StartBug> + ( y >> img -> y_chroma_shift ) * img -> stride [ VPX_PLANE_U ] ; <S2SV_EndBug> data += ( img -> h >> img -> y_chroma_shift ) * img -> stride [ VPX_PLANE_U ] ; <S2SV_StartBug> img -> planes [ VPX_PLANE_V ] = data <S2SV_EndBug> + ( x >> img -> x_chroma_shift ) <S2SV_StartBug> + ( y >> img -> y_chroma_shift ) * img -> stride [ VPX_PLANE_V ] ; <S2SV_EndBug> } else { <S2SV_StartBug> img -> planes [ VPX_PLANE_V ] = data <S2SV_EndBug> + ( x >> img -> x_chroma_shift ) <S2SV_StartBug> + ( y >> img -> y_chroma_shift ) * img -> stride [ VPX_PLANE_V ] ; <S2SV_EndBug> data += ( img -> h >> img -> y_chroma_shift ) * img -> stride [ VPX_PLANE_V ] ; <S2SV_StartBug> img -> planes [ VPX_PLANE_U ] = data <S2SV_EndBug> + ( x >> img -> x_chroma_shift ) <S2SV_StartBug> + ( y >> img -> y_chroma_shift ) * img -> stride [ VPX_PLANE_U ] ; <S2SV_EndBug> } } return 0 ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { const int bytes_per_sample = ( img -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? 2 : 1 ; <S2SV_ModStart> data + x * bytes_per_sample <S2SV_ModStart> data + x * bytes_per_sample + <S2SV_ModEnd> y * img <S2SV_ModStart> VPX_PLANE_U ] = data <S2SV_ModEnd> + ( x <S2SV_ModStart> -> x_chroma_shift ) * bytes_per_sample + <S2SV_ModEnd> ( y >> <S2SV_ModStart> VPX_PLANE_V ] = data <S2SV_ModEnd> + ( x <S2SV_ModStart> -> x_chroma_shift ) * bytes_per_sample + <S2SV_ModEnd> ( y >> <S2SV_ModStart> VPX_PLANE_V ] = data <S2SV_ModEnd> + ( x <S2SV_ModStart> -> x_chroma_shift ) * bytes_per_sample + <S2SV_ModEnd> ( y >> <S2SV_ModStart> VPX_PLANE_U ] = data <S2SV_ModEnd> + ( x <S2SV_ModStart> -> x_chroma_shift ) * bytes_per_sample + <S2SV_ModEnd> ( y >>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10249\n\n```\nCWE-190 void * jas_realloc ( void * ptr , size_t size ) { void * result ; <S2SV_StartBug> JAS_DBGLOG ( 101 , ( \"jas_realloc<S2SV_blank>called<S2SV_blank>with<S2SV_blank>%x,%zu\\\\n\" , ptr , size ) ) ; <S2SV_EndBug> result = realloc ( ptr , size ) ; JAS_DBGLOG ( 100 , ( \"jas_realloc(%p,<S2SV_blank>%zu)<S2SV_blank>-><S2SV_blank>%p\\\\n\" , ptr , size , result ) ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 101 , ( \"jas_realloc(%x,<S2SV_blank>%zu)\\\\n\" <S2SV_ModEnd> , ptr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7294\n\n```\nCWE-20 static void ikev2_parent_inR1outI2_continue ( struct pluto_crypto_req_cont * pcrc , struct pluto_crypto_req * r , err_t ugh ) { struct dh_continuation * dh = ( struct dh_continuation * ) pcrc ; struct msg_digest * md = dh -> md ; struct state * const st = md -> st ; stf_status e ; DBG ( DBG_CONTROLMORE , DBG_log ( \"ikev2<S2SV_blank>parent<S2SV_blank>inR1outI2:<S2SV_blank>calculating<S2SV_blank>g^{xy},<S2SV_blank>sending<S2SV_blank>I2\" ) ) ; if ( st == NULL ) { loglog ( RC_LOG_SERIOUS , \"%s:<S2SV_blank>Request<S2SV_blank>was<S2SV_blank>disconnected<S2SV_blank>from<S2SV_blank>state\" , __FUNCTION__ ) ; if ( dh -> md ) release_md ( dh -> md ) ; return ; } passert ( ugh == NULL ) ; passert ( cur_state == NULL ) ; passert ( st != NULL ) ; passert ( st -> st_suspended_md == dh -> md ) ; set_suspended ( st , NULL ) ; set_cur_state ( st ) ; st -> st_calculating = FALSE ; e = ikev2_parent_inR1outI2_tail ( pcrc , r ) ; if ( dh -> md != NULL ) { complete_v2_state_transition ( & dh -> md , e ) ; if ( dh -> md ) release_md ( dh -> md ) ; } reset_globals ( ) ; <S2SV_StartBug> passert ( GLOBALS_ARE_RESET ( ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_first_pass ( VP8_COMP * cpi ) { int mb_row , mb_col ; MACROBLOCK * const x = & cpi -> mb ; VP8_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & x -> e_mbd ; int recon_yoffset , recon_uvoffset ; YV12_BUFFER_CONFIG * lst_yv12 = & cm -> yv12_fb [ cm -> lst_fb_idx ] ; YV12_BUFFER_CONFIG * new_yv12 = & cm -> yv12_fb [ cm -> new_fb_idx ] ; YV12_BUFFER_CONFIG * gld_yv12 = & cm -> yv12_fb [ cm -> gld_fb_idx ] ; int recon_y_stride = lst_yv12 -> y_stride ; int recon_uv_stride = lst_yv12 -> uv_stride ; int64_t intra_error = 0 ; int64_t coded_error = 0 ; int sum_mvr = 0 , sum_mvc = 0 ; int sum_mvr_abs = 0 , sum_mvc_abs = 0 ; int sum_mvrs = 0 , sum_mvcs = 0 ; int mvcount = 0 ; int intercount = 0 ; int second_ref_count = 0 ; int intrapenalty = 256 ; int neutral_count = 0 ; int new_mv_count = 0 ; int sum_in_vectors = 0 ; uint32_t lastmv_as_int = 0 ; int_mv zero_ref_mv ; zero_ref_mv . as_int = 0 ; vp8_clear_system_state ( ) ; x -> src = * cpi -> Source ; xd -> pre = * lst_yv12 ; xd -> dst = * new_yv12 ; x -> partition_info = x -> pi ; xd -> mode_info_context = cm -> mi ; if ( ! cm -> use_bilinear_mc_filter ) { xd -> subpixel_predict = vp8_sixtap_predict4x4 ; xd -> subpixel_predict8x4 = vp8_sixtap_predict8x4 ; xd -> subpixel_predict8x8 = vp8_sixtap_predict8x8 ; xd -> subpixel_predict16x16 = vp8_sixtap_predict16x16 ; } else { xd -> subpixel_predict = vp8_bilinear_predict4x4 ; xd -> subpixel_predict8x4 = vp8_bilinear_predict8x4 ; xd -> subpixel_predict8x8 = vp8_bilinear_predict8x8 ; xd -> subpixel_predict16x16 = vp8_bilinear_predict16x16 ; } vp8_build_block_offsets ( x ) ; vp8_setup_intra_recon ( new_yv12 ) ; vp8cx_frame_init_quantizer ( cpi ) ; { int flag [ 2 ] = { 1 , 1 } ; vp8_initialize_rd_consts ( cpi , x , vp8_dc_quant ( cm -> base_qindex , cm -> y1dc_delta_q ) ) ; <S2SV_StartBug> vpx_memcpy ( cm -> fc . mvc , vp8_default_mv_context , sizeof ( vp8_default_mv_context ) ) ; <S2SV_EndBug> vp8_build_component_cost_table ( cpi -> mb . mvcost , ( const MV_CONTEXT * ) cm -> fc . mvc , flag ) ; } for ( mb_row = 0 ; mb_row < cm -> mb_rows ; mb_row ++ ) { int_mv best_ref_mv ; best_ref_mv . as_int = 0 ; xd -> up_available = ( mb_row != 0 ) ; recon_yoffset = ( mb_row * recon_y_stride * 16 ) ; recon_uvoffset = ( mb_row * recon_uv_stride * 8 ) ; x -> mv_row_min = - ( ( mb_row * 16 ) + ( VP8BORDERINPIXELS - 16 ) ) ; x -> mv_row_max = ( ( cm -> mb_rows - 1 - mb_row ) * 16 ) + ( VP8BORDERINPIXELS - 16 ) ; for ( mb_col = 0 ; mb_col < cm -> mb_cols ; mb_col ++ ) { int this_error ; int gf_motion_error = INT_MAX ; int use_dc_pred = ( mb_col || mb_row ) && ( ! mb_col || ! mb_row ) ; xd -> dst . y_buffer = new_yv12 -> y_buffer + recon_yoffset ; xd -> dst . u_buffer = new_yv12 -> u_buffer + recon_uvoffset ; xd -> dst . v_buffer = new_yv12 -> v_buffer + recon_uvoffset ; xd -> left_available = ( mb_col != 0 ) ; vp8_copy_mem16x16 ( x -> src . y_buffer , x -> src . y_stride , x -> thismb , 16 ) ; this_error = vp8_encode_intra ( cpi , x , use_dc_pred ) ; this_error += intrapenalty ; intra_error += ( int64_t ) this_error ; x -> mv_col_min = - ( ( mb_col * 16 ) + ( VP8BORDERINPIXELS - 16 ) ) ; x -> mv_col_max = ( ( cm -> mb_cols - 1 - mb_col ) * 16 ) + ( VP8BORDERINPIXELS - 16 ) ; if ( cm -> current_video_frame > 0 ) { BLOCKD * d = & x -> e_mbd . block [ 0 ] ; MV tmp_mv = { 0 , 0 } ; int tmp_err ; int motion_error = INT_MAX ; int raw_motion_error = INT_MAX ; zz_motion_search ( cpi , x , cpi -> last_frame_unscaled_source , & raw_motion_error , lst_yv12 , & motion_error , recon_yoffset ) ; d -> bmi . mv . as_mv . row = 0 ; d -> bmi . mv . as_mv . col = 0 ; if ( raw_motion_error < cpi -> oxcf . encode_breakout ) goto skip_motion_search ; first_pass_motion_search ( cpi , x , & best_ref_mv , & d -> bmi . mv . as_mv , lst_yv12 , & motion_error , recon_yoffset ) ; if ( best_ref_mv . as_int ) { tmp_err = INT_MAX ; first_pass_motion_search ( cpi , x , & zero_ref_mv , & tmp_mv , lst_yv12 , & tmp_err , recon_yoffset ) ; if ( tmp_err < motion_error ) { motion_error = tmp_err ; d -> bmi . mv . as_mv . row = tmp_mv . row ; d -> bmi . mv . as_mv . col = tmp_mv . col ; } } if ( cm -> current_video_frame > 1 ) { first_pass_motion_search ( cpi , x , & zero_ref_mv , & tmp_mv , gld_yv12 , & gf_motion_error , recon_yoffset ) ; if ( ( gf_motion_error < motion_error ) && ( gf_motion_error < this_error ) ) { second_ref_count ++ ; } xd -> pre . y_buffer = lst_yv12 -> y_buffer + recon_yoffset ; xd -> pre . u_buffer = lst_yv12 -> u_buffer + recon_uvoffset ; xd -> pre . v_buffer = lst_yv12 -> v_buffer + recon_uvoffset ; } skip_motion_search : best_ref_mv . as_int = 0 ; if ( motion_error <= this_error ) { if ( ( ( ( this_error - intrapenalty ) * 9 ) <= ( motion_error * 10 ) ) && ( this_error < ( 2 * intrapenalty ) ) ) { neutral_count ++ ; } d -> bmi . mv . as_mv . row *= 8 ; d -> bmi . mv . as_mv . col *= 8 ; this_error = motion_error ; vp8_set_mbmode_and_mvs ( x , NEWMV , & d -> bmi . mv ) ; vp8_encode_inter16x16y ( x ) ; sum_mvr += d -> bmi . mv . as_mv . row ; sum_mvr_abs += abs ( d -> bmi . mv . as_mv . row ) ; sum_mvc += d -> bmi . mv . as_mv . col ; sum_mvc_abs += abs ( d -> bmi . mv . as_mv . col ) ; sum_mvrs += d -> bmi . mv . as_mv . row * d -> bmi . mv . as_mv . row ; sum_mvcs += d -> bmi . mv . as_mv . col * d -> bmi . mv . as_mv . col ; intercount ++ ; best_ref_mv . as_int = d -> bmi . mv . as_int ; if ( d -> bmi . mv . as_int ) { mvcount ++ ; if ( d -> bmi . mv . as_int != lastmv_as_int ) new_mv_count ++ ; lastmv_as_int = d -> bmi . mv . as_int ; if ( mb_row < cm -> mb_rows / 2 ) { if ( d -> bmi . mv . as_mv . row > 0 ) sum_in_vectors -- ; else if ( d -> bmi . mv . as_mv . row < 0 ) sum_in_vectors ++ ; } else if ( mb_row > cm -> mb_rows / 2 ) { if ( d -> bmi . mv . as_mv . row > 0 ) sum_in_vectors ++ ; else if ( d -> bmi . mv . as_mv . row < 0 ) sum_in_vectors -- ; } if ( mb_col < cm -> mb_cols / 2 ) { if ( d -> bmi . mv . as_mv . col > 0 ) sum_in_vectors -- ; else if ( d -> bmi . mv . as_mv . col < 0 ) sum_in_vectors ++ ; } else if ( mb_col > cm -> mb_cols / 2 ) { if ( d -> bmi . mv . as_mv . col > 0 ) sum_in_vectors ++ ; else if ( d -> bmi . mv . as_mv . col < 0 ) sum_in_vectors -- ; } } } } coded_error += ( int64_t ) this_error ; x -> src . y_buffer += 16 ; x -> src . u_buffer += 8 ; x -> src . v_buffer += 8 ; recon_yoffset += 16 ; recon_uvoffset += 8 ; } x -> src . y_buffer += 16 * x -> src . y_stride - 16 * cm -> mb_cols ; x -> src . u_buffer += 8 * x -> src . uv_stride - 8 * cm -> mb_cols ; x -> src . v_buffer += 8 * x -> src . uv_stride - 8 * cm -> mb_cols ; vp8_extend_mb_row ( new_yv12 , xd -> dst . y_buffer + 16 , xd -> dst . u_buffer + 8 , xd -> dst . v_buffer + 8 ) ; vp8_clear_system_state ( ) ; } vp8_clear_system_state ( ) ; { double weight = 0.0 ; FIRSTPASS_STATS fps ; fps . frame = cm -> current_video_frame ; fps . intra_error = ( double ) ( intra_error >> 8 ) ; fps . coded_error = ( double ) ( coded_error >> 8 ) ; weight = simple_weight ( cpi -> Source ) ; if ( weight < 0.1 ) weight = 0.1 ; fps . ssim_weighted_pred_err = fps . coded_error * weight ; fps . pcnt_inter = 0.0 ; fps . pcnt_motion = 0.0 ; fps . MVr = 0.0 ; fps . mvr_abs = 0.0 ; fps . MVc = 0.0 ; fps . mvc_abs = 0.0 ; fps . MVrv = 0.0 ; fps . MVcv = 0.0 ; fps . mv_in_out_count = 0.0 ; fps . new_mv_count = 0.0 ; fps . count = 1.0 ; fps . pcnt_inter = 1.0 * ( double ) intercount / cm -> MBs ; fps . pcnt_second_ref = 1.0 * ( double ) second_ref_count / cm -> MBs ; fps . pcnt_neutral = 1.0 * ( double ) neutral_count / cm -> MBs ; if ( mvcount > 0 ) { fps . MVr = ( double ) sum_mvr / ( double ) mvcount ; fps . mvr_abs = ( double ) sum_mvr_abs / ( double ) mvcount ; fps . MVc = ( double ) sum_mvc / ( double ) mvcount ; fps . mvc_abs = ( double ) sum_mvc_abs / ( double ) mvcount ; fps . MVrv = ( ( double ) sum_mvrs - ( fps . MVr * fps . MVr / ( double ) mvcount ) ) / ( double ) mvcount ; fps . MVcv = ( ( double ) sum_mvcs - ( fps . MVc * fps . MVc / ( double ) mvcount ) ) / ( double ) mvcount ; fps . mv_in_out_count = ( double ) sum_in_vectors / ( double ) ( mvcount * 2 ) ; fps . new_mv_count = new_mv_count ; fps . pcnt_motion = 1.0 * ( double ) mvcount / cpi -> common . MBs ; } fps . duration = ( double ) ( cpi -> source -> ts_end - cpi -> source -> ts_start ) ; memcpy ( & cpi -> twopass . this_frame_stats , & fps , sizeof ( FIRSTPASS_STATS ) ) ; output_stats ( cpi , cpi -> output_pkt_list , & cpi -> twopass . this_frame_stats ) ; accumulate_stats ( & cpi -> twopass . total_stats , & fps ) ; } if ( ( cm -> current_video_frame > 0 ) && ( cpi -> twopass . this_frame_stats . pcnt_inter > 0.20 ) && ( ( cpi -> twopass . this_frame_stats . intra_error / DOUBLE_DIVIDE_CHECK ( cpi -> twopass . this_frame_stats . coded_error ) ) > 2.0 ) ) { vp8_yv12_copy_frame ( lst_yv12 , gld_yv12 ) ; } vp8_swap_yv12_buffer ( lst_yv12 , new_yv12 ) ; vp8_yv12_extend_frame_borders ( lst_yv12 ) ; if ( cm -> current_video_frame == 0 ) { vp8_yv12_copy_frame ( lst_yv12 , gld_yv12 ) ; } if ( 0 ) { char filename [ 512 ] ; FILE * recon_file ; sprintf ( filename , \"enc%04d.yuv\" , ( int ) cm -> current_video_frame ) ; if ( cm -> current_video_frame == 0 ) recon_file = fopen ( filename , \"wb\" ) ; else recon_file = fopen ( filename , \"ab\" ) ; ( void ) fwrite ( lst_yv12 -> buffer_alloc , lst_yv12 -> frame_size , 1 , recon_file ) ; fclose ( recon_file ) ; } cm -> current_video_frame ++ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( cm ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14463\n\n```\nCWE-125 int modbus_reply ( modbus_t * ctx , const uint8_t * req , int req_length , modbus_mapping_t * mb_mapping ) { int offset ; int slave ; int function ; uint16_t address ; uint8_t rsp [ MAX_MESSAGE_LENGTH ] ; int rsp_length = 0 ; sft_t sft ; if ( ctx == NULL ) { errno = EINVAL ; return - 1 ; } offset = ctx -> backend -> header_length ; slave = req [ offset - 1 ] ; function = req [ offset ] ; address = ( req [ offset + 1 ] << 8 ) + req [ offset + 2 ] ; sft . slave = slave ; sft . function = function ; sft . t_id = ctx -> backend -> prepare_response_tid ( req , & req_length ) ; switch ( function ) { case MODBUS_FC_READ_COILS : case MODBUS_FC_READ_DISCRETE_INPUTS : { unsigned int is_input = ( function == MODBUS_FC_READ_DISCRETE_INPUTS ) ; int start_bits = is_input ? mb_mapping -> start_input_bits : mb_mapping -> start_bits ; int nb_bits = is_input ? mb_mapping -> nb_input_bits : mb_mapping -> nb_bits ; uint8_t * tab_bits = is_input ? mb_mapping -> tab_input_bits : mb_mapping -> tab_bits ; const char * const name = is_input ? \"read_input_bits\" : \"read_bits\" ; int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; int mapping_address = address - start_bits ; if ( nb < 1 || MODBUS_MAX_READ_BITS < nb ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>nb<S2SV_blank>of<S2SV_blank>values<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , nb , name , MODBUS_MAX_READ_BITS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > nb_bits ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>%s\\\\n\" , mapping_address < 0 ? address : address + nb , name ) ; } else { rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; rsp [ rsp_length ++ ] = ( nb / 8 ) + ( ( nb % 8 ) ? 1 : 0 ) ; rsp_length = response_io_status ( tab_bits , mapping_address , nb , rsp , rsp_length ) ; } } break ; case MODBUS_FC_READ_HOLDING_REGISTERS : case MODBUS_FC_READ_INPUT_REGISTERS : { unsigned int is_input = ( function == MODBUS_FC_READ_INPUT_REGISTERS ) ; int start_registers = is_input ? mb_mapping -> start_input_registers : mb_mapping -> start_registers ; int nb_registers = is_input ? mb_mapping -> nb_input_registers : mb_mapping -> nb_registers ; uint16_t * tab_registers = is_input ? mb_mapping -> tab_input_registers : mb_mapping -> tab_registers ; const char * const name = is_input ? \"read_input_registers\" : \"read_registers\" ; int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; int mapping_address = address - start_registers ; if ( nb < 1 || MODBUS_MAX_READ_REGISTERS < nb ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>nb<S2SV_blank>of<S2SV_blank>values<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , nb , name , MODBUS_MAX_READ_REGISTERS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>%s\\\\n\" , mapping_address < 0 ? address : address + nb , name ) ; } else { int i ; rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; rsp [ rsp_length ++ ] = nb << 1 ; for ( i = mapping_address ; i < mapping_address + nb ; i ++ ) { rsp [ rsp_length ++ ] = tab_registers [ i ] >> 8 ; rsp [ rsp_length ++ ] = tab_registers [ i ] & 0xFF ; } } } break ; case MODBUS_FC_WRITE_SINGLE_COIL : { int mapping_address = address - mb_mapping -> start_bits ; if ( mapping_address < 0 || mapping_address >= mb_mapping -> nb_bits ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_bit\\\\n\" , address ) ; } else { int data = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; if ( data == 0xFF00 || data == 0x0 ) { mb_mapping -> tab_bits [ mapping_address ] = data ? ON : OFF ; memcpy ( rsp , req , req_length ) ; rsp_length = req_length ; } else { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>value<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_bit<S2SV_blank>request<S2SV_blank>at<S2SV_blank>address<S2SV_blank>%0X\\\\n\" , data , address ) ; } } } break ; case MODBUS_FC_WRITE_SINGLE_REGISTER : { int mapping_address = address - mb_mapping -> start_registers ; if ( mapping_address < 0 || mapping_address >= mb_mapping -> nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_register\\\\n\" , address ) ; } else { int data = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; mb_mapping -> tab_registers [ mapping_address ] = data ; memcpy ( rsp , req , req_length ) ; rsp_length = req_length ; } } break ; case MODBUS_FC_WRITE_MULTIPLE_COILS : { int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; <S2SV_StartBug> int mapping_address = address - mb_mapping -> start_bits ; <S2SV_EndBug> <S2SV_StartBug> if ( nb < 1 || MODBUS_MAX_WRITE_BITS < nb ) { <S2SV_EndBug> rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>number<S2SV_blank>of<S2SV_blank>values<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>write_bits<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , nb , MODBUS_MAX_WRITE_BITS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > mb_mapping -> nb_bits ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_bits\\\\n\" , mapping_address < 0 ? address : address + nb ) ; } else { modbus_set_bits_from_bytes ( mb_mapping -> tab_bits , mapping_address , nb , & req [ offset + 6 ] ) ; rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; memcpy ( rsp + rsp_length , req + rsp_length , 4 ) ; rsp_length += 4 ; } } break ; case MODBUS_FC_WRITE_MULTIPLE_REGISTERS : { <S2SV_StartBug> int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; <S2SV_EndBug> int mapping_address = address - mb_mapping -> start_registers ; <S2SV_StartBug> if ( nb < 1 || MODBUS_MAX_WRITE_REGISTERS < nb ) { <S2SV_EndBug> rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>number<S2SV_blank>of<S2SV_blank>values<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>write_registers<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , nb , MODBUS_MAX_WRITE_REGISTERS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > mb_mapping -> nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_registers\\\\n\" , mapping_address < 0 ? address : address + nb ) ; } else { int i , j ; for ( i = mapping_address , j = 6 ; i < mapping_address + nb ; i ++ , j += 2 ) { mb_mapping -> tab_registers [ i ] = ( req [ offset + j ] << 8 ) + req [ offset + j + 1 ] ; } rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; memcpy ( rsp + rsp_length , req + rsp_length , 4 ) ; rsp_length += 4 ; } } break ; case MODBUS_FC_REPORT_SLAVE_ID : { int str_len ; int byte_count_pos ; rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; byte_count_pos = rsp_length ++ ; rsp [ rsp_length ++ ] = _REPORT_SLAVE_ID ; rsp [ rsp_length ++ ] = 0xFF ; str_len = 3 + strlen ( LIBMODBUS_VERSION_STRING ) ; memcpy ( rsp + rsp_length , \"LMB\" LIBMODBUS_VERSION_STRING , str_len ) ; rsp_length += str_len ; rsp [ byte_count_pos ] = rsp_length - byte_count_pos - 1 ; } break ; case MODBUS_FC_READ_EXCEPTION_STATUS : if ( ctx -> debug ) { fprintf ( stderr , \"FIXME<S2SV_blank>Not<S2SV_blank>implemented\\\\n\" ) ; } errno = ENOPROTOOPT ; return - 1 ; break ; case MODBUS_FC_MASK_WRITE_REGISTER : { int mapping_address = address - mb_mapping -> start_registers ; if ( mapping_address < 0 || mapping_address >= mb_mapping -> nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_register\\\\n\" , address ) ; } else { uint16_t data = mb_mapping -> tab_registers [ mapping_address ] ; uint16_t and = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; uint16_t or = ( req [ offset + 5 ] << 8 ) + req [ offset + 6 ] ; data = ( data & and ) | ( or & ( ~ and ) ) ; mb_mapping -> tab_registers [ mapping_address ] = data ; memcpy ( rsp , req , req_length ) ; rsp_length = req_length ; } } break ; case MODBUS_FC_WRITE_AND_READ_REGISTERS : { int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; uint16_t address_write = ( req [ offset + 5 ] << 8 ) + req [ offset + 6 ] ; int nb_write = ( req [ offset + 7 ] << 8 ) + req [ offset + 8 ] ; int nb_write_bytes = req [ offset + 9 ] ; int mapping_address = address - mb_mapping -> start_registers ; int mapping_address_write = address_write - mb_mapping -> start_registers ; if ( nb_write < 1 || MODBUS_MAX_WR_WRITE_REGISTERS < nb_write || nb < 1 || MODBUS_MAX_WR_READ_REGISTERS < nb || nb_write_bytes != nb_write * 2 ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>nb<S2SV_blank>of<S2SV_blank>values<S2SV_blank>(W%d,<S2SV_blank>R%d)<S2SV_blank>in<S2SV_blank>write_and_read_registers<S2SV_blank>(max<S2SV_blank>W%d,<S2SV_blank>R%d)\\\\n\" , nb_write , nb , MODBUS_MAX_WR_WRITE_REGISTERS , MODBUS_MAX_WR_READ_REGISTERS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > mb_mapping -> nb_registers || mapping_address < 0 || ( mapping_address_write + nb_write ) > mb_mapping -> nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>read<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>or<S2SV_blank>write<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>write_and_read_registers\\\\n\" , mapping_address < 0 ? address : address + nb , mapping_address_write < 0 ? address_write : address_write + nb_write ) ; } else { int i , j ; rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; rsp [ rsp_length ++ ] = nb << 1 ; for ( i = mapping_address_write , j = 10 ; i < mapping_address_write + nb_write ; i ++ , j += 2 ) { mb_mapping -> tab_registers [ i ] = ( req [ offset + j ] << 8 ) + req [ offset + j + 1 ] ; } for ( i = mapping_address ; i < mapping_address + nb ; i ++ ) { rsp [ rsp_length ++ ] = mb_mapping -> tab_registers [ i ] >> 8 ; rsp [ rsp_length ++ ] = mb_mapping -> tab_registers [ i ] & 0xFF ; } } } break ; default : rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_FUNCTION , rsp , TRUE , \"Unknown<S2SV_blank>Modbus<S2SV_blank>function<S2SV_blank>code:<S2SV_blank>0x%0X\\\\n\" , function ) ; break ; } return ( ctx -> backend -> backend_type == _MODBUS_BACKEND_TYPE_RTU && slave == MODBUS_BROADCAST_ADDRESS ) ? 0 : send_msg ( ctx , rsp , rsp_length ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ; int nb_bits = req [ offset + 5 ] ; int <S2SV_ModStart> MODBUS_MAX_WRITE_BITS < nb || nb_bits * 8 < nb <S2SV_ModStart> offset + 4 ] ; int nb_bytes = req [ offset + 5 <S2SV_ModStart> 1 || MODBUS_MAX_WRITE_REGISTERS < nb || nb_bytes * 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2905\n\n```\nCWE-000 int perf_config ( config_fn_t fn , void * data ) { <S2SV_StartBug> int ret = 0 , found = 0 ; <S2SV_EndBug> char * repo_config = NULL ; const char * home = NULL ; if ( config_exclusive_filename ) return perf_config_from_file ( fn , config_exclusive_filename , data ) ; if ( perf_config_system ( ) && ! access ( perf_etc_perfconfig ( ) , R_OK ) ) { ret += perf_config_from_file ( fn , perf_etc_perfconfig ( ) , data ) ; found += 1 ; } home = getenv ( \"HOME\" ) ; if ( perf_config_global ( ) && home ) { char * user_config = strdup ( mkpath ( \"%s/.perfconfig\" , home ) ) ; if ( ! access ( user_config , R_OK ) ) { ret += perf_config_from_file ( fn , user_config , data ) ; found += 1 ; } free ( user_config ) ; } <S2SV_StartBug> repo_config = perf_pathdup ( \"config\" ) ; <S2SV_EndBug> if ( ! access ( repo_config , R_OK ) ) { ret += perf_config_from_file ( fn , repo_config , data ) ; found += 1 ; } free ( repo_config ) ; if ( found == 0 ) return - 1 ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> found = 0 <S2SV_ModEnd> ; const char <S2SV_ModStart> ) ; } <S2SV_ModEnd> if ( found\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horDiff32 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { TIFFPredictorState * sp = PredictorState ( tif ) ; tmsize_t stride = sp -> stride ; uint32 * wp = ( uint32 * ) cp0 ; tmsize_t wc = cc / 4 ; <S2SV_StartBug> assert ( ( cc % ( 4 * stride ) ) == 0 ) ; <S2SV_EndBug> if ( wc > stride ) { wc -= stride ; wp += wc - 1 ; do { REPEAT4 ( stride , wp [ stride ] -= wp [ 0 ] ; wp -- ) wc -= stride ; } while ( wc > 0 ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horDiff32 ( TIFF <S2SV_ModStart> / 4 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horDiff32\" , \"%s\" , \"(cc%(4*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( wc <S2SV_ModStart> ) ; } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_diamond_search_sad_c ( MACROBLOCK * x , BLOCK * b , BLOCKD * d , int_mv * ref_mv , int_mv * best_mv , int search_param , int sad_per_bit , int * num00 , vp8_variance_fn_ptr_t * fn_ptr , int * mvcost [ 2 ] , int_mv * center_mv ) { int i , j , step ; unsigned char * what = ( * ( b -> base_src ) + b -> src ) ; int what_stride = b -> src_stride ; unsigned char * in_what ; int pre_stride = x -> e_mbd . pre . y_stride ; unsigned char * base_pre = x -> e_mbd . pre . y_buffer ; int in_what_stride = pre_stride ; unsigned char * best_address ; int tot_steps ; int_mv this_mv ; unsigned int bestsad ; unsigned int thissad ; int best_site = 0 ; int last_site = 0 ; int ref_row ; int ref_col ; int this_row_offset ; int this_col_offset ; search_site * ss ; unsigned char * check_here ; int * mvsadcost [ 2 ] ; int_mv fcenter_mv ; mvsadcost [ 0 ] = x -> mvsadcost [ 0 ] ; mvsadcost [ 1 ] = x -> mvsadcost [ 1 ] ; fcenter_mv . as_mv . row = center_mv -> as_mv . row >> 3 ; fcenter_mv . as_mv . col = center_mv -> as_mv . col >> 3 ; vp8_clamp_mv ( ref_mv , x -> mv_col_min , x -> mv_col_max , x -> mv_row_min , x -> mv_row_max ) ; ref_row = ref_mv -> as_mv . row ; ref_col = ref_mv -> as_mv . col ; * num00 = 0 ; best_mv -> as_mv . row = ref_row ; best_mv -> as_mv . col = ref_col ; in_what = ( unsigned char * ) ( base_pre + d -> offset + ( ref_row * pre_stride ) + ref_col ) ; best_address = in_what ; <S2SV_StartBug> bestsad = fn_ptr -> sdf ( what , what_stride , in_what , in_what_stride , UINT_MAX ) <S2SV_EndBug> + mvsad_err_cost ( best_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; ss = & x -> ss [ search_param * x -> searches_per_step ] ; tot_steps = ( x -> ss_count / x -> searches_per_step ) - search_param ; i = 1 ; for ( step = 0 ; step < tot_steps ; step ++ ) { for ( j = 0 ; j < x -> searches_per_step ; j ++ ) { this_row_offset = best_mv -> as_mv . row + ss [ i ] . mv . row ; this_col_offset = best_mv -> as_mv . col + ss [ i ] . mv . col ; if ( ( this_col_offset > x -> mv_col_min ) && ( this_col_offset < x -> mv_col_max ) && ( this_row_offset > x -> mv_row_min ) && ( this_row_offset < x -> mv_row_max ) ) { check_here = ss [ i ] . offset + best_address ; <S2SV_StartBug> thissad = fn_ptr -> sdf ( what , what_stride , check_here , in_what_stride , bestsad ) ; <S2SV_EndBug> if ( thissad < bestsad ) { this_mv . as_mv . row = this_row_offset ; this_mv . as_mv . col = this_col_offset ; thissad += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( thissad < bestsad ) { bestsad = thissad ; best_site = i ; } } } i ++ ; } if ( best_site != last_site ) { best_mv -> as_mv . row += ss [ best_site ] . mv . row ; best_mv -> as_mv . col += ss [ best_site ] . mv . col ; best_address += ss [ best_site ] . offset ; last_site = best_site ; } else if ( best_address == in_what ) ( * num00 ) ++ ; } this_mv . as_mv . row = best_mv -> as_mv . row << 3 ; this_mv . as_mv . col = best_mv -> as_mv . col << 3 ; return fn_ptr -> vf ( what , what_stride , best_address , in_what_stride , & thissad ) + mv_err_cost ( & this_mv , center_mv , mvcost , x -> errorperbit ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in_what , in_what_stride <S2SV_ModEnd> ) + mvsad_err_cost <S2SV_ModStart> check_here , in_what_stride <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3145\n\n```\nCWE-125 static u64 __skb_get_nlattr_nest ( u64 ctx , u64 A , u64 X , u64 r4 , u64 r5 ) { struct sk_buff * skb = ( struct sk_buff * ) ( long ) ctx ; struct nlattr * nla ; if ( skb_is_nonlinear ( skb ) ) return 0 ; <S2SV_StartBug> if ( A > skb -> len - sizeof ( struct nlattr ) ) <S2SV_EndBug> return 0 ; nla = ( struct nlattr * ) & skb -> data [ A ] ; <S2SV_StartBug> if ( nla -> nla_len > A - skb -> len ) <S2SV_EndBug> return 0 ; nla = nla_find_nested ( nla , X ) ; if ( nla ) return ( void * ) nla - ( void * ) skb -> data ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( skb -> len < sizeof ( struct nlattr ) ) return 0 ; if ( <S2SV_ModStart> -> nla_len > <S2SV_ModEnd> skb -> len <S2SV_ModStart> skb -> len - A\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-129(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10663\n\n```\nCWE-129 int sanity_check_ckpt ( struct f2fs_sb_info * sbi ) { unsigned int total , fsmeta ; struct f2fs_super_block * raw_super = F2FS_RAW_SUPER ( sbi ) ; struct f2fs_checkpoint * ckpt = F2FS_CKPT ( sbi ) ; unsigned int ovp_segments , reserved_segments ; <S2SV_StartBug> total = le32_to_cpu ( raw_super -> segment_count ) ; <S2SV_EndBug> fsmeta = le32_to_cpu ( raw_super -> segment_count_ckpt ) ; fsmeta += le32_to_cpu ( raw_super -> segment_count_sit ) ; fsmeta += le32_to_cpu ( raw_super -> segment_count_nat ) ; fsmeta += le32_to_cpu ( ckpt -> rsvd_segment_count ) ; fsmeta += le32_to_cpu ( raw_super -> segment_count_ssa ) ; if ( unlikely ( fsmeta >= total ) ) return 1 ; ovp_segments = le32_to_cpu ( ckpt -> overprov_segment_count ) ; reserved_segments = le32_to_cpu ( ckpt -> rsvd_segment_count ) ; if ( unlikely ( fsmeta < F2FS_MIN_SEGMENTS || ovp_segments == 0 || reserved_segments == 0 ) ) { f2fs_msg ( sbi -> sb , KERN_ERR , \"Wrong<S2SV_blank>layout:<S2SV_blank>check<S2SV_blank>mkfs.f2fs<S2SV_blank>version\" ) ; return 1 ; } <S2SV_StartBug> if ( unlikely ( f2fs_cp_error ( sbi ) ) ) { <S2SV_EndBug> f2fs_msg ( sbi -> sb , KERN_ERR , \"A<S2SV_blank>bug<S2SV_blank>case:<S2SV_blank>need<S2SV_blank>to<S2SV_blank>run<S2SV_blank>fsck\" ) ; return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , reserved_segments ; unsigned int main_segs , blocks_per_seg ; int i ; <S2SV_ModStart> 1 ; } main_segs = le32_to_cpu ( raw_super -> segment_count_main ) ; blocks_per_seg = sbi -> blocks_per_seg ; for ( i = 0 ; i < NR_CURSEG_NODE_TYPE ; i ++ ) { if ( le32_to_cpu ( ckpt -> cur_node_segno [ i ] ) >= main_segs || le16_to_cpu ( ckpt -> cur_node_blkoff [ i ] ) >= blocks_per_seg ) return 1 ; } for ( i = 0 ; i < NR_CURSEG_DATA_TYPE ; i ++ ) { if ( le32_to_cpu ( ckpt -> cur_data_segno [ i ] ) >= main_segs || le16_to_cpu ( ckpt -> cur_data_blkoff [ i ] ) >= blocks_per_seg ) return 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 static int do_timer_create ( clockid_t which_clock , struct sigevent * event , timer_t __user * created_timer_id ) { const struct k_clock * kc = clockid_to_kclock ( which_clock ) ; struct k_itimer * new_timer ; int error , new_timer_id ; int it_id_set = IT_ID_NOT_SET ; if ( ! kc ) return - EINVAL ; if ( ! kc -> timer_create ) return - EOPNOTSUPP ; new_timer = alloc_posix_timer ( ) ; if ( unlikely ( ! new_timer ) ) return - EAGAIN ; spin_lock_init ( & new_timer -> it_lock ) ; new_timer_id = posix_timer_add ( new_timer ) ; if ( new_timer_id < 0 ) { error = new_timer_id ; goto out ; } it_id_set = IT_ID_SET ; new_timer -> it_id = ( timer_t ) new_timer_id ; new_timer -> it_clock = which_clock ; new_timer -> kclock = kc ; <S2SV_StartBug> new_timer -> it_overrun = - 1 ; <S2SV_EndBug> if ( event ) { rcu_read_lock ( ) ; new_timer -> it_pid = get_pid ( good_sigevent ( event ) ) ; rcu_read_unlock ( ) ; if ( ! new_timer -> it_pid ) { error = - EINVAL ; goto out ; } new_timer -> it_sigev_notify = event -> sigev_notify ; new_timer -> sigq -> info . si_signo = event -> sigev_signo ; new_timer -> sigq -> info . si_value = event -> sigev_value ; } else { new_timer -> it_sigev_notify = SIGEV_SIGNAL ; new_timer -> sigq -> info . si_signo = SIGALRM ; memset ( & new_timer -> sigq -> info . si_value , 0 , sizeof ( sigval_t ) ) ; new_timer -> sigq -> info . si_value . sival_int = new_timer -> it_id ; new_timer -> it_pid = get_pid ( task_tgid ( current ) ) ; } new_timer -> sigq -> info . si_tid = new_timer -> it_id ; new_timer -> sigq -> info . si_code = SI_TIMER ; if ( copy_to_user ( created_timer_id , & new_timer_id , sizeof ( new_timer_id ) ) ) { error = - EFAULT ; goto out ; } error = kc -> timer_create ( new_timer ) ; if ( error ) goto out ; spin_lock_irq ( & current -> sighand -> siglock ) ; new_timer -> it_signal = current -> signal ; list_add ( & new_timer -> list , & current -> signal -> posix_timers ) ; spin_unlock_irq ( & current -> sighand -> siglock ) ; return 0 ; out : release_posix_timer ( new_timer , it_id_set ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> it_overrun = - 1LL <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static asdl_seq * ast_for_suite ( struct compiling * c , const node * n ) { asdl_seq * seq ; stmt_ty s ; int i , total , num , end , pos = 0 ; node * ch ; <S2SV_StartBug> REQ ( n , suite ) ; <S2SV_EndBug> total = num_stmts ( n ) ; seq = _Py_asdl_seq_new ( total , c -> c_arena ) ; if ( ! seq ) return NULL ; if ( TYPE ( CHILD ( n , 0 ) ) == simple_stmt ) { n = CHILD ( n , 0 ) ; end = NCH ( n ) - 1 ; if ( TYPE ( CHILD ( n , end - 1 ) ) == SEMI ) end -- ; for ( i = 0 ; i < end ; i += 2 ) { ch = CHILD ( n , i ) ; s = ast_for_stmt ( c , ch ) ; if ( ! s ) return NULL ; asdl_seq_SET ( seq , pos ++ , s ) ; } } else { <S2SV_StartBug> for ( i = 2 ; i < ( NCH ( n ) - 1 ) ; i ++ ) { <S2SV_EndBug> ch = CHILD ( n , i ) ; REQ ( ch , stmt ) ; num = num_stmts ( ch ) ; if ( num == 1 ) { s = ast_for_stmt ( c , ch ) ; if ( ! s ) return NULL ; asdl_seq_SET ( seq , pos ++ , s ) ; } else { int j ; ch = CHILD ( ch , 0 ) ; REQ ( ch , simple_stmt ) ; for ( j = 0 ; j < NCH ( ch ) ; j += 2 ) { if ( NCH ( CHILD ( ch , j ) ) == 0 ) { assert ( ( j + 1 ) == NCH ( ch ) ) ; break ; } s = ast_for_stmt ( c , CHILD ( ch , j ) ) ; if ( ! s ) return NULL ; asdl_seq_SET ( seq , pos ++ , s ) ; } } } } assert ( pos == seq -> size ) ; return seq ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ch ; if ( TYPE ( n ) != func_body_suite ) { <S2SV_ModStart> suite ) ; } <S2SV_ModStart> } else { i = 2 ; if ( TYPE ( CHILD ( n , 1 ) ) == TYPE_COMMENT ) { i += 2 ; REQ ( CHILD ( n , 2 ) , NEWLINE ) ; } for ( <S2SV_ModEnd> ; i <\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0839\n\n```\nCWE-119 static int vol_prc_lib_release ( effect_handle_t handle ) { struct listnode * node , * temp_node_next ; vol_listener_context_t * context = NULL ; vol_listener_context_t * recv_contex = ( vol_listener_context_t * ) handle ; <S2SV_StartBug> int status = - 1 ; <S2SV_EndBug> bool recompute_flag = false ; int active_stream_count = 0 ; <S2SV_StartBug> ALOGV ( \"%s<S2SV_blank>context<S2SV_blank>%p\" , __func__ , handle ) ; <S2SV_EndBug> <S2SV_StartBug> pthread_mutex_lock ( & vol_listner_init_lock ) ; <S2SV_EndBug> list_for_each_safe ( node , temp_node_next , & vol_effect_list ) { context = node_to_item ( node , struct vol_listener_context_s , effect_list_node ) ; <S2SV_StartBug> if ( ( memcmp ( & ( context -> desc -> uuid ) , & ( recv_contex -> desc -> uuid ) , sizeof ( effect_uuid_t ) ) == 0 ) <S2SV_EndBug> <S2SV_StartBug> && ( context -> session_id == recv_contex -> session_id ) <S2SV_EndBug> <S2SV_StartBug> && ( context -> stream_type == recv_contex -> stream_type ) ) { <S2SV_EndBug> ALOGV ( \"---<S2SV_blank>Found<S2SV_blank>something<S2SV_blank>to<S2SV_blank>remove<S2SV_blank>---\" ) ; <S2SV_StartBug> list_remove ( & context -> effect_list_node ) ; <S2SV_EndBug> PRINT_STREAM_TYPE ( context -> stream_type ) ; if ( context -> dev_id && AUDIO_DEVICE_OUT_SPEAKER ) { recompute_flag = true ; } free ( context ) ; status = 0 ; } else { ++ active_stream_count ; } } if ( status != 0 ) { ALOGE ( \"something<S2SV_blank>wrong<S2SV_blank>...<S2SV_blank><<<---<S2SV_blank>Found<S2SV_blank>NOTHING<S2SV_blank>to<S2SV_blank>remove<S2SV_blank>...<S2SV_blank>????<S2SV_blank>--->>>>>\" ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( active_stream_count == 0 ) { current_gain_dep_cal_level = - 1 ; current_vol = 0.0 ; } if ( recompute_flag ) { check_and_set_gain_dep_cal ( ) ; } if ( dumping_enabled ) { dump_list_l ( ) ; } pthread_mutex_unlock ( & vol_listner_init_lock ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> status = - EINVAL <S2SV_ModEnd> ; bool recompute_flag <S2SV_ModStart> = 0 ; uint32_t session_id ; uint32_t stream_type ; effect_uuid_t uuid ; <S2SV_ModStart> handle ) ; if ( recv_contex == NULL ) { return status ; } <S2SV_ModStart> & vol_listner_init_lock ) ; session_id = recv_contex -> session_id ; stream_type = recv_contex -> stream_type ; uuid = recv_contex -> desc -> uuid <S2SV_ModStart> ) , & uuid <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> -> session_id == <S2SV_ModEnd> session_id ) && <S2SV_ModStart> -> stream_type == <S2SV_ModEnd> stream_type ) ) <S2SV_ModStart> ; list_remove ( node <S2SV_ModEnd> ) ; PRINT_STREAM_TYPE <S2SV_ModStart> \"something<S2SV_blank>wrong<S2SV_blank>...<S2SV_blank><<<---<S2SV_blank>Found<S2SV_blank>NOTHING<S2SV_blank>to<S2SV_blank>remove<S2SV_blank>...<S2SV_blank>????<S2SV_blank>--->>>>>\" ) ; pthread_mutex_unlock ( & vol_listner_init_lock ) ; return status ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7969\n\n```\nCWE-125 static void wrap_lines_smart ( ASS_Renderer * render_priv , double max_text_width ) { int i ; GlyphInfo * cur , * s1 , * e1 , * s2 , * s3 ; int last_space ; int break_type ; int exit ; double pen_shift_x ; double pen_shift_y ; int cur_line ; int run_offset ; TextInfo * text_info = & render_priv -> text_info ; last_space = - 1 ; text_info -> n_lines = 1 ; break_type = 0 ; s1 = text_info -> glyphs ; for ( i = 0 ; i < text_info -> length ; ++ i ) { int break_at = - 1 ; double s_offset , len ; cur = text_info -> glyphs + i ; s_offset = d6_to_double ( s1 -> bbox . xMin + s1 -> pos . x ) ; len = d6_to_double ( cur -> bbox . xMax + cur -> pos . x ) - s_offset ; if ( cur -> symbol == '\\\\n' ) { break_type = 2 ; break_at = i ; ass_msg ( render_priv -> library , MSGL_DBG2 , \"forced<S2SV_blank>line<S2SV_blank>break<S2SV_blank>at<S2SV_blank>%d\" , break_at ) ; } else if ( cur -> symbol == '<S2SV_blank>' ) { last_space = i ; } else if ( len >= max_text_width && ( render_priv -> state . wrap_style != 2 ) ) { break_type = 1 ; break_at = last_space ; if ( break_at >= 0 ) ass_msg ( render_priv -> library , MSGL_DBG2 , \"line<S2SV_blank>break<S2SV_blank>at<S2SV_blank>%d\" , break_at ) ; } if ( break_at != - 1 ) { int lead = break_at + 1 ; if ( text_info -> n_lines >= text_info -> max_lines ) { text_info -> max_lines *= 2 ; text_info -> lines = realloc ( text_info -> lines , sizeof ( LineInfo ) * text_info -> max_lines ) ; } if ( lead < text_info -> length ) { text_info -> glyphs [ lead ] . linebreak = break_type ; last_space = - 1 ; s1 = text_info -> glyphs + lead ; text_info -> n_lines ++ ; } } } # define DIFF ( x , y ) ( ( ( x ) < ( y ) ) ? ( y - x ) : ( x - y ) ) exit = 0 ; while ( ! exit && render_priv -> state . wrap_style != 1 ) { exit = 1 ; s3 = text_info -> glyphs ; s1 = s2 = 0 ; for ( i = 0 ; i <= text_info -> length ; ++ i ) { cur = text_info -> glyphs + i ; if ( ( i == text_info -> length ) || cur -> linebreak ) { s1 = s2 ; s2 = s3 ; s3 = cur ; if ( s1 && ( s2 -> linebreak == 1 ) ) { double l1 , l2 , l1_new , l2_new ; GlyphInfo * w = s2 ; do { -- w ; } while ( ( w > s1 ) && ( w -> symbol == '<S2SV_blank>' ) ) ; while ( ( w > s1 ) && ( w -> symbol != '<S2SV_blank>' ) ) { -- w ; } e1 = w ; while ( ( e1 > s1 ) && ( e1 -> symbol == '<S2SV_blank>' ) ) { -- e1 ; } if ( w -> symbol == '<S2SV_blank>' ) ++ w ; l1 = d6_to_double ( ( ( s2 - 1 ) -> bbox . xMax + ( s2 - 1 ) -> pos . x ) - ( s1 -> bbox . xMin + s1 -> pos . x ) ) ; l2 = d6_to_double ( ( ( s3 - 1 ) -> bbox . xMax + ( s3 - 1 ) -> pos . x ) - ( s2 -> bbox . xMin + s2 -> pos . x ) ) ; l1_new = d6_to_double ( ( e1 -> bbox . xMax + e1 -> pos . x ) - ( s1 -> bbox . xMin + s1 -> pos . x ) ) ; l2_new = d6_to_double ( ( ( s3 - 1 ) -> bbox . xMax + ( s3 - 1 ) -> pos . x ) - ( w -> bbox . xMin + w -> pos . x ) ) ; if ( DIFF ( l1_new , l2_new ) < DIFF ( l1 , l2 ) ) { <S2SV_StartBug> w -> linebreak = 1 ; <S2SV_EndBug> s2 -> linebreak = 0 ; exit = 0 ; } } } if ( i == text_info -> length ) break ; } } assert ( text_info -> n_lines >= 1 ) ; # undef DIFF measure_text ( render_priv ) ; trim_whitespace ( render_priv ) ; cur_line = 1 ; run_offset = 0 ; i = 0 ; cur = text_info -> glyphs + i ; while ( i < text_info -> length && cur -> skip ) cur = text_info -> glyphs + ++ i ; pen_shift_x = d6_to_double ( - cur -> pos . x ) ; pen_shift_y = 0. ; for ( i = 0 ; i < text_info -> length ; ++ i ) { cur = text_info -> glyphs + i ; if ( cur -> linebreak ) { while ( i < text_info -> length && cur -> skip && cur -> symbol != '\\\\n' ) cur = text_info -> glyphs + ++ i ; double height = text_info -> lines [ cur_line - 1 ] . desc + text_info -> lines [ cur_line ] . asc ; text_info -> lines [ cur_line - 1 ] . len = i - text_info -> lines [ cur_line - 1 ] . offset ; text_info -> lines [ cur_line ] . offset = i ; cur_line ++ ; run_offset ++ ; pen_shift_x = d6_to_double ( - cur -> pos . x ) ; pen_shift_y += height + render_priv -> settings . line_spacing ; } cur -> pos . x += double_to_d6 ( pen_shift_x ) ; cur -> pos . y += double_to_d6 ( pen_shift_y ) ; } text_info -> lines [ cur_line - 1 ] . len = text_info -> length - text_info -> lines [ cur_line - 1 ] . offset ; # if 0 for ( i = 0 ; i < text_info -> n_lines ; i ++ ) { printf ( \"line<S2SV_blank>%d<S2SV_blank>offset<S2SV_blank>%d<S2SV_blank>length<S2SV_blank>%d\\\\n\" , i , text_info -> lines [ i ] . offset , text_info -> lines [ i ] . len ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( w -> linebreak || w == text_info -> glyphs ) text_info -> n_lines -- ; if ( w != text_info -> glyphs )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static expr_ty FstringParser_Finish ( FstringParser * state , struct compiling * c , const node * n ) { asdl_seq * seq ; FstringParser_check_invariants ( state ) ; <S2SV_StartBug> if ( state -> expr_list . size == 0 ) { <S2SV_EndBug> if ( ! state -> last_str ) { state -> last_str = PyUnicode_FromStringAndSize ( NULL , 0 ) ; if ( ! state -> last_str ) goto error ; } return make_str_node_and_del ( & state -> last_str , c , n ) ; } if ( state -> last_str ) { expr_ty str = make_str_node_and_del ( & state -> last_str , c , n ) ; if ( ! str || ExprList_Append ( & state -> expr_list , str ) < 0 ) goto error ; } assert ( state -> last_str == NULL ) ; seq = ExprList_Finish ( & state -> expr_list , c -> c_arena ) ; if ( ! seq ) goto error ; <S2SV_StartBug> if ( seq -> size == 1 ) <S2SV_EndBug> return seq -> elements [ 0 ] ; return JoinedStr ( seq , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; error : FstringParser_Dealloc ( state ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! state -> fmode ) { assert ( ! <S2SV_ModStart> expr_list . size ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> goto error ; <S2SV_ModEnd> return JoinedStr (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2496\n\n```\nCWE-189 static struct vm_area_struct * vma_to_resize ( unsigned long addr , unsigned long old_len , unsigned long new_len , unsigned long * p ) { struct mm_struct * mm = current -> mm ; struct vm_area_struct * vma = find_vma ( mm , addr ) ; if ( ! vma || vma -> vm_start > addr ) goto Efault ; if ( is_vm_hugetlb_page ( vma ) ) goto Einval ; if ( old_len > vma -> vm_end - addr ) goto Efault ; <S2SV_StartBug> if ( vma -> vm_flags & ( VM_DONTEXPAND | VM_PFNMAP ) ) { <S2SV_EndBug> if ( new_len > old_len ) goto Efault ; } if ( vma -> vm_flags & VM_LOCKED ) { unsigned long locked , lock_limit ; locked = mm -> locked_vm << PAGE_SHIFT ; lock_limit = rlimit ( RLIMIT_MEMLOCK ) ; locked += new_len - old_len ; if ( locked > lock_limit && ! capable ( CAP_IPC_LOCK ) ) goto Eagain ; } if ( ! may_expand_vm ( mm , ( new_len - old_len ) >> PAGE_SHIFT ) ) goto Enomem ; if ( vma -> vm_flags & VM_ACCOUNT ) { unsigned long charged = ( new_len - old_len ) >> PAGE_SHIFT ; if ( security_vm_enough_memory ( charged ) ) goto Efault ; * p = charged ; } return vma ; Efault : return ERR_PTR ( - EFAULT ) ; Einval : return ERR_PTR ( - EINVAL ) ; Enomem : return ERR_PTR ( - ENOMEM ) ; Eagain : return ERR_PTR ( - EAGAIN ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( new_len > old_len ) { unsigned long pgoff ; if ( <S2SV_ModStart> VM_PFNMAP ) ) goto Efault ; pgoff = ( addr - vma -> vm_start ) >> PAGE_SHIFT ; pgoff += vma -> vm_pgoff ; if ( pgoff + ( new_len >> PAGE_SHIFT ) < pgoff ) goto Einval <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 int kvm_arch_vcpu_init ( struct kvm_vcpu * vcpu ) { struct page * page ; struct kvm * kvm ; int r ; BUG_ON ( vcpu -> kvm == NULL ) ; kvm = vcpu -> kvm ; vcpu -> arch . emulate_ctxt . ops = & emulate_ops ; if ( ! irqchip_in_kernel ( kvm ) || kvm_vcpu_is_bsp ( vcpu ) ) vcpu -> arch . mp_state = KVM_MP_STATE_RUNNABLE ; else vcpu -> arch . mp_state = KVM_MP_STATE_UNINITIALIZED ; page = alloc_page ( GFP_KERNEL | __GFP_ZERO ) ; if ( ! page ) { r = - ENOMEM ; goto fail ; } vcpu -> arch . pio_data = page_address ( page ) ; kvm_set_tsc_khz ( vcpu , max_tsc_khz ) ; r = kvm_mmu_create ( vcpu ) ; if ( r < 0 ) goto fail_free_pio_data ; if ( irqchip_in_kernel ( kvm ) ) { r = kvm_create_lapic ( vcpu ) ; if ( r < 0 ) goto fail_mmu_destroy ; } else static_key_slow_inc ( & kvm_no_apic_vcpu ) ; vcpu -> arch . mce_banks = kzalloc ( KVM_MAX_MCE_BANKS * sizeof ( u64 ) * 4 , GFP_KERNEL ) ; if ( ! vcpu -> arch . mce_banks ) { r = - ENOMEM ; goto fail_free_lapic ; } vcpu -> arch . mcg_cap = KVM_MAX_MCE_BANKS ; if ( ! zalloc_cpumask_var ( & vcpu -> arch . wbinvd_dirty_mask , GFP_KERNEL ) ) goto fail_free_mce_banks ; r = fx_init ( vcpu ) ; if ( r ) goto fail_free_wbinvd_dirty_mask ; vcpu -> arch . ia32_tsc_adjust_msr = 0x0 ; <S2SV_StartBug> kvm_async_pf_hash_reset ( vcpu ) ; <S2SV_EndBug> kvm_pmu_init ( vcpu ) ; return 0 ; fail_free_wbinvd_dirty_mask : free_cpumask_var ( vcpu -> arch . wbinvd_dirty_mask ) ; fail_free_mce_banks : kfree ( vcpu -> arch . mce_banks ) ; fail_free_lapic : kvm_free_lapic ( vcpu ) ; fail_mmu_destroy : kvm_mmu_destroy ( vcpu ) ; fail_free_pio_data : free_page ( ( unsigned long ) vcpu -> arch . pio_data ) ; fail : return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0x0 ; vcpu -> arch . pv_time_enabled = false ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6541\n\n```\nCWE-200 static int ccid3_hc_tx_getsockopt ( struct sock * sk , const int optname , int len , u32 __user * optval , int __user * optlen ) { const struct ccid3_hc_tx_sock * hc = ccid3_hc_tx_sk ( sk ) ; struct tfrc_tx_info tfrc ; const void * val ; switch ( optname ) { case DCCP_SOCKOPT_CCID_TX_INFO : if ( len < sizeof ( tfrc ) ) return - EINVAL ; <S2SV_StartBug> tfrc . tfrctx_x = hc -> tx_x ; <S2SV_EndBug> tfrc . tfrctx_x_recv = hc -> tx_x_recv ; tfrc . tfrctx_x_calc = hc -> tx_x_calc ; tfrc . tfrctx_rtt = hc -> tx_rtt ; tfrc . tfrctx_p = hc -> tx_p ; tfrc . tfrctx_rto = hc -> tx_t_rto ; tfrc . tfrctx_ipi = hc -> tx_t_ipi ; len = sizeof ( tfrc ) ; val = & tfrc ; break ; default : return - ENOPROTOOPT ; } if ( put_user ( len , optlen ) || copy_to_user ( optval , val , len ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EINVAL ; memset ( & tfrc , 0 , sizeof ( tfrc ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9588\n\n```\nCWE-388 static bool nested_vmx_exit_handled ( struct kvm_vcpu * vcpu ) { u32 intr_info = vmcs_read32 ( VM_EXIT_INTR_INFO ) ; struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; struct vmcs12 * vmcs12 = get_vmcs12 ( vcpu ) ; u32 exit_reason = vmx -> exit_reason ; trace_kvm_nested_vmexit ( kvm_rip_read ( vcpu ) , exit_reason , vmcs_readl ( EXIT_QUALIFICATION ) , vmx -> idt_vectoring_info , intr_info , vmcs_read32 ( VM_EXIT_INTR_ERROR_CODE ) , KVM_ISA_VMX ) ; if ( vmx -> nested . nested_run_pending ) return false ; if ( unlikely ( vmx -> fail ) ) { pr_info_ratelimited ( \"%s<S2SV_blank>failed<S2SV_blank>vm<S2SV_blank>entry<S2SV_blank>%x\\\\n\" , __func__ , vmcs_read32 ( VM_INSTRUCTION_ERROR ) ) ; return true ; } switch ( exit_reason ) { case EXIT_REASON_EXCEPTION_NMI : <S2SV_StartBug> if ( ! is_exception ( intr_info ) ) <S2SV_EndBug> return false ; else if ( is_page_fault ( intr_info ) ) return enable_ept ; else if ( is_no_device ( intr_info ) && ! ( vmcs12 -> guest_cr0 & X86_CR0_TS ) ) return false ; else if ( is_debug ( intr_info ) && vcpu -> guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) return false ; else if ( is_breakpoint ( intr_info ) && vcpu -> guest_debug & KVM_GUESTDBG_USE_SW_BP ) return false ; return vmcs12 -> exception_bitmap & ( 1u << ( intr_info & INTR_INFO_VECTOR_MASK ) ) ; case EXIT_REASON_EXTERNAL_INTERRUPT : return false ; case EXIT_REASON_TRIPLE_FAULT : return true ; case EXIT_REASON_PENDING_INTERRUPT : return nested_cpu_has ( vmcs12 , CPU_BASED_VIRTUAL_INTR_PENDING ) ; case EXIT_REASON_NMI_WINDOW : return nested_cpu_has ( vmcs12 , CPU_BASED_VIRTUAL_NMI_PENDING ) ; case EXIT_REASON_TASK_SWITCH : return true ; case EXIT_REASON_CPUID : if ( kvm_register_read ( vcpu , VCPU_REGS_RAX ) == 0xa ) return false ; return true ; case EXIT_REASON_HLT : return nested_cpu_has ( vmcs12 , CPU_BASED_HLT_EXITING ) ; case EXIT_REASON_INVD : return true ; case EXIT_REASON_INVLPG : return nested_cpu_has ( vmcs12 , CPU_BASED_INVLPG_EXITING ) ; case EXIT_REASON_RDPMC : return nested_cpu_has ( vmcs12 , CPU_BASED_RDPMC_EXITING ) ; case EXIT_REASON_RDTSC : case EXIT_REASON_RDTSCP : return nested_cpu_has ( vmcs12 , CPU_BASED_RDTSC_EXITING ) ; case EXIT_REASON_VMCALL : case EXIT_REASON_VMCLEAR : case EXIT_REASON_VMLAUNCH : case EXIT_REASON_VMPTRLD : case EXIT_REASON_VMPTRST : case EXIT_REASON_VMREAD : case EXIT_REASON_VMRESUME : case EXIT_REASON_VMWRITE : case EXIT_REASON_VMOFF : case EXIT_REASON_VMON : case EXIT_REASON_INVEPT : case EXIT_REASON_INVVPID : return true ; case EXIT_REASON_CR_ACCESS : return nested_vmx_exit_handled_cr ( vcpu , vmcs12 ) ; case EXIT_REASON_DR_ACCESS : return nested_cpu_has ( vmcs12 , CPU_BASED_MOV_DR_EXITING ) ; case EXIT_REASON_IO_INSTRUCTION : return nested_vmx_exit_handled_io ( vcpu , vmcs12 ) ; case EXIT_REASON_GDTR_IDTR : case EXIT_REASON_LDTR_TR : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_DESC ) ; case EXIT_REASON_MSR_READ : case EXIT_REASON_MSR_WRITE : return nested_vmx_exit_handled_msr ( vcpu , vmcs12 , exit_reason ) ; case EXIT_REASON_INVALID_STATE : return true ; case EXIT_REASON_MWAIT_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_MWAIT_EXITING ) ; case EXIT_REASON_MONITOR_TRAP_FLAG : return nested_cpu_has ( vmcs12 , CPU_BASED_MONITOR_TRAP_FLAG ) ; case EXIT_REASON_MONITOR_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_MONITOR_EXITING ) ; case EXIT_REASON_PAUSE_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_PAUSE_EXITING ) || nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_PAUSE_LOOP_EXITING ) ; case EXIT_REASON_MCE_DURING_VMENTRY : return false ; case EXIT_REASON_TPR_BELOW_THRESHOLD : return nested_cpu_has ( vmcs12 , CPU_BASED_TPR_SHADOW ) ; case EXIT_REASON_APIC_ACCESS : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES ) ; case EXIT_REASON_APIC_WRITE : case EXIT_REASON_EOI_INDUCED : return true ; case EXIT_REASON_EPT_VIOLATION : return false ; case EXIT_REASON_EPT_MISCONFIG : return false ; case EXIT_REASON_WBINVD : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_WBINVD_EXITING ) ; case EXIT_REASON_XSETBV : return true ; case EXIT_REASON_XSAVES : case EXIT_REASON_XRSTORS : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_XSAVES ) ; case EXIT_REASON_PREEMPTION_TIMER : return false ; default : return true ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( is_nmi <S2SV_ModEnd> ( intr_info )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { AVFilterContext * ctx = inlink -> dst ; LutContext * s = ctx -> priv ; AVFilterLink * outlink = ctx -> outputs [ 0 ] ; AVFrame * out ; uint8_t * inrow , * outrow , * inrow0 , * outrow0 ; int i , j , plane , direct = 0 ; if ( av_frame_is_writable ( in ) ) { direct = 1 ; out = in ; } else { out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; } if ( s -> is_rgb ) { inrow0 = in -> data [ 0 ] ; outrow0 = out -> data [ 0 ] ; for ( i = 0 ; i < in -> height ; i ++ ) { int w = inlink -> w ; const uint8_t ( * tab ) [ 256 ] = ( const uint8_t ( * ) [ 256 ] ) s -> lut ; inrow = inrow0 ; outrow = outrow0 ; for ( j = 0 ; j < w ; j ++ ) { switch ( s -> step ) { case 4 : outrow [ 3 ] = tab [ 3 ] [ inrow [ 3 ] ] ; case 3 : outrow [ 2 ] = tab [ 2 ] [ inrow [ 2 ] ] ; case 2 : outrow [ 1 ] = tab [ 1 ] [ inrow [ 1 ] ] ; default : outrow [ 0 ] = tab [ 0 ] [ inrow [ 0 ] ] ; } outrow += s -> step ; inrow += s -> step ; } inrow0 += in -> linesize [ 0 ] ; outrow0 += out -> linesize [ 0 ] ; } } else { <S2SV_StartBug> for ( plane = 0 ; plane < 4 && in -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> int vsub = plane == 1 || plane == 2 ? s -> vsub : 0 ; int hsub = plane == 1 || plane == 2 ? s -> hsub : 0 ; int h = FF_CEIL_RSHIFT ( inlink -> h , vsub ) ; int w = FF_CEIL_RSHIFT ( inlink -> w , hsub ) ; inrow = in -> data [ plane ] ; outrow = out -> data [ plane ] ; for ( i = 0 ; i < h ; i ++ ) { const uint8_t * tab = s -> lut [ plane ] ; for ( j = 0 ; j < w ; j ++ ) outrow [ j ] = tab [ inrow [ j ] ] ; inrow += in -> linesize [ plane ] ; outrow += out -> linesize [ plane ] ; } } } if ( ! direct ) av_frame_free ( & in ) ; return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ plane ] && in -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27347\n\n```\nCWE-787 static void input_csi_dispatch_sgr_colon ( struct input_ctx * ictx , u_int i ) { struct grid_cell * gc = & ictx -> cell . cell ; char * s = ictx -> param_list [ i ] . str , * copy , * ptr , * out ; int p [ 8 ] ; u_int n ; const char * errstr ; for ( n = 0 ; n < nitems ( p ) ; n ++ ) p [ n ] = - 1 ; n = 0 ; ptr = copy = xstrdup ( s ) ; while ( ( out = strsep ( & ptr , \":\" ) ) != NULL ) { if ( * out != '\\\\0' ) { p [ n ++ ] = strtonum ( out , 0 , INT_MAX , & errstr ) ; if ( errstr != NULL || n == nitems ( p ) ) { free ( copy ) ; return ; } <S2SV_StartBug> } else <S2SV_EndBug> <S2SV_StartBug> n ++ ; <S2SV_EndBug> log_debug ( \"%s:<S2SV_blank>%u<S2SV_blank>=<S2SV_blank>%d\" , __func__ , n - 1 , p [ n - 1 ] ) ; } free ( copy ) ; if ( n == 0 ) return ; if ( p [ 0 ] == 4 ) { if ( n != 2 ) return ; switch ( p [ 1 ] ) { case 0 : gc -> attr &= ~ GRID_ATTR_ALL_UNDERSCORE ; break ; case 1 : gc -> attr &= ~ GRID_ATTR_ALL_UNDERSCORE ; gc -> attr |= GRID_ATTR_UNDERSCORE ; break ; case 2 : gc -> attr &= ~ GRID_ATTR_ALL_UNDERSCORE ; gc -> attr |= GRID_ATTR_UNDERSCORE_2 ; break ; case 3 : gc -> attr &= ~ GRID_ATTR_ALL_UNDERSCORE ; gc -> attr |= GRID_ATTR_UNDERSCORE_3 ; break ; case 4 : gc -> attr &= ~ GRID_ATTR_ALL_UNDERSCORE ; gc -> attr |= GRID_ATTR_UNDERSCORE_4 ; break ; case 5 : gc -> attr &= ~ GRID_ATTR_ALL_UNDERSCORE ; gc -> attr |= GRID_ATTR_UNDERSCORE_5 ; break ; } return ; } if ( n < 2 || ( p [ 0 ] != 38 && p [ 0 ] != 48 && p [ 0 ] != 58 ) ) return ; switch ( p [ 1 ] ) { case 2 : if ( n < 3 ) break ; if ( n == 5 ) i = 2 ; else i = 3 ; if ( n < i + 3 ) break ; input_csi_dispatch_sgr_rgb_do ( ictx , p [ 0 ] , p [ i ] , p [ i + 1 ] , p [ i + 2 ] ) ; break ; case 5 : if ( n < 3 ) break ; input_csi_dispatch_sgr_256_do ( ictx , p [ 0 ] , p [ 2 ] ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } } else { <S2SV_ModStart> n ++ ; if ( n == nitems ( p ) ) { free ( copy ) ; return ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18216\n\n```\nCWE-476 static ssize_t o2nm_node_local_store ( struct config_item * item , const char * page , size_t count ) { struct o2nm_node * node = to_o2nm_node ( item ) ; <S2SV_StartBug> struct o2nm_cluster * cluster = to_o2nm_cluster_from_node ( node ) ; <S2SV_EndBug> unsigned long tmp ; char * p = ( char * ) page ; ssize_t ret ; tmp = simple_strtoul ( p , & p , 0 ) ; if ( ! p || ( * p && ( * p != '\\\\n' ) ) ) return - EINVAL ; tmp = ! ! tmp ; if ( ! test_bit ( O2NM_NODE_ATTR_ADDRESS , & node -> nd_set_attributes ) || ! test_bit ( O2NM_NODE_ATTR_NUM , & node -> nd_set_attributes ) || ! test_bit ( O2NM_NODE_ATTR_PORT , & node -> nd_set_attributes ) ) return - EINVAL ; <S2SV_StartBug> if ( tmp && tmp == cluster -> cl_has_local && <S2SV_EndBug> cluster -> cl_local_node != node -> nd_num ) <S2SV_StartBug> return - EBUSY ; <S2SV_EndBug> <S2SV_StartBug> if ( tmp && ! cluster -> cl_has_local ) { <S2SV_EndBug> ret = o2net_start_listening ( node ) ; if ( ret ) <S2SV_StartBug> return ret ; <S2SV_EndBug> } if ( ! tmp && cluster -> cl_has_local && cluster -> cl_local_node == node -> nd_num ) { o2net_stop_listening ( node ) ; cluster -> cl_local_node = O2NM_INVALID_NODE_NUM ; } node -> nd_local = tmp ; if ( node -> nd_local ) { cluster -> cl_has_local = tmp ; cluster -> cl_local_node = node -> nd_num ; } <S2SV_StartBug> return count ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o2nm_cluster * cluster <S2SV_ModEnd> ; unsigned long <S2SV_ModStart> - EINVAL ; o2nm_lock_subsystem ( ) ; cluster = to_o2nm_cluster_from_node ( node ) ; if ( ! cluster ) { ret = - EINVAL ; goto out ; } <S2SV_ModStart> -> nd_num ) { ret = <S2SV_ModEnd> - EBUSY ; <S2SV_ModStart> - EBUSY ; goto out ; } <S2SV_ModStart> ( ret ) goto out <S2SV_ModEnd> ; } if <S2SV_ModStart> nd_num ; } ret = count ; out : o2nm_unlock_subsystem ( ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 <S2SV_StartBug> void ext4_xattr_destroy_cache ( struct mb_cache * cache ) <S2SV_EndBug> { if ( cache ) <S2SV_StartBug> mb_cache_destroy ( cache ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext4_xattr_destroy_cache ( struct mb2_cache <S2SV_ModEnd> * cache ) <S2SV_ModStart> ( cache ) mb2_cache_destroy <S2SV_ModEnd> ( cache )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3315\n\n```\nCWE-59 <S2SV_StartBug> static bool dump_fd_info ( const char * dest_filename , char * source_filename , int source_base_ofs ) <S2SV_EndBug> { FILE * fp = fopen ( dest_filename , \"w\" ) ; if ( ! fp ) return false ; unsigned fd = 0 ; while ( fd <= 99999 ) { sprintf ( source_filename + source_base_ofs , \"fd/%u\" , fd ) ; char * name = malloc_readlink ( source_filename ) ; if ( ! name ) break ; fprintf ( fp , \"%u:%s\\\\n\" , fd , name ) ; free ( name ) ; sprintf ( source_filename + source_base_ofs , \"fdinfo/%u\" , fd ) ; fd ++ ; FILE * in = fopen ( source_filename , \"r\" ) ; if ( ! in ) continue ; char buf [ 128 ] ; while ( fgets ( buf , sizeof ( buf ) - 1 , in ) ) { char * eol = strchrnul ( buf , '\\\\n' ) ; eol [ 0 ] = '\\\\n' ; eol [ 1 ] = '\\\\0' ; fputs ( buf , fp ) ; } fclose ( in ) ; } <S2SV_StartBug> fclose ( fp ) ; <S2SV_EndBug> return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int source_base_ofs , uid_t uid , gid_t gid <S2SV_ModStart> ) ; } const int dest_fd = fileno ( fp ) ; if ( fchown ( dest_fd , uid , gid ) < 0 ) { perror_msg ( \"Can\\'t<S2SV_blank>change<S2SV_blank>\\'%s\\'<S2SV_blank>ownership<S2SV_blank>to<S2SV_blank>%lu:%lu\" , dest_filename , ( long ) uid , ( long ) gid ) ; fclose ( fp ) ; unlink ( dest_filename ) ; return false ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3820\n\n```\nCWE-119 WORD32 ih264d_parse_nal_unit ( iv_obj_t * dec_hdl , ivd_video_decode_op_t * ps_dec_op , UWORD8 * pu1_buf , UWORD32 u4_length ) { dec_bit_stream_t * ps_bitstrm ; dec_struct_t * ps_dec = ( dec_struct_t * ) dec_hdl -> pv_codec_handle ; ivd_video_decode_ip_t * ps_dec_in = ( ivd_video_decode_ip_t * ) ps_dec -> pv_dec_in ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; UWORD8 u1_first_byte , u1_nal_ref_idc ; UWORD8 u1_nal_unit_type ; WORD32 i_status = OK ; ps_bitstrm = ps_dec -> ps_bitstrm ; if ( pu1_buf ) { if ( u4_length ) { ps_dec_op -> u4_frame_decoded_flag = 0 ; ih264d_process_nal_unit ( ps_dec -> ps_bitstrm , pu1_buf , u4_length ) ; SWITCHOFFTRACE ; u1_first_byte = ih264d_get_bits_h264 ( ps_bitstrm , 8 ) ; if ( NAL_FORBIDDEN_BIT ( u1_first_byte ) ) { H264_DEC_DEBUG_PRINT ( \"\\\\nForbidden<S2SV_blank>bit<S2SV_blank>set<S2SV_blank>in<S2SV_blank>Nal<S2SV_blank>Unit,<S2SV_blank>Let\\'s<S2SV_blank>try\\\\n\" ) ; } <S2SV_StartBug> u1_nal_unit_type = NAL_UNIT_TYPE ( u1_first_byte ) ; <S2SV_EndBug> ps_dec -> u1_nal_unit_type = u1_nal_unit_type ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_first_byte ) ) ; switch ( u1_nal_unit_type ) { case SLICE_DATA_PARTITION_A_NAL : case SLICE_DATA_PARTITION_B_NAL : case SLICE_DATA_PARTITION_C_NAL : if ( ! ps_dec -> i4_decode_header ) ih264d_parse_slice_partition ( ps_dec , ps_bitstrm ) ; break ; case IDR_SLICE_NAL : case SLICE_NAL : DEBUG_THREADS_PRINTF ( \"Decoding<S2SV_blank><S2SV_blank>a<S2SV_blank>slice<S2SV_blank>NAL\\\\n\" ) ; if ( ! ps_dec -> i4_decode_header ) { if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u4_slice_start_code_found = 1 ; ih264d_rbsp_to_sodb ( ps_dec -> ps_bitstrm ) ; i_status = ih264d_parse_decode_slice ( ( UWORD8 ) ( u1_nal_unit_type == IDR_SLICE_NAL ) , u1_nal_ref_idc , ps_dec ) ; if ( ( ps_dec -> u4_first_slice_in_pic != 0 ) && ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) ) { ps_dec -> u4_first_slice_in_pic = 1 ; } if ( i_status != OK ) { return i_status ; } } else { H264_DEC_DEBUG_PRINT ( \"\\\\nSlice<S2SV_blank>NAL<S2SV_blank>Supplied<S2SV_blank>but<S2SV_blank>no<S2SV_blank>header<S2SV_blank>has<S2SV_blank>been<S2SV_blank>supplied\\\\n\" ) ; } } break ; case SEI_NAL : if ( ! ps_dec -> i4_decode_header ) { ih264d_rbsp_to_sodb ( ps_dec -> ps_bitstrm ) ; i_status = ih264d_parse_sei_message ( ps_dec , ps_bitstrm ) ; if ( i_status != OK ) return i_status ; ih264d_parse_sei ( ps_dec , ps_bitstrm ) ; } break ; case SEQ_PARAM_NAL : ih264d_rbsp_to_sodb ( ps_dec -> ps_bitstrm ) ; i_status = ih264d_parse_sps ( ps_dec , ps_bitstrm ) ; if ( i_status == ERROR_INV_SPS_PPS_T ) return i_status ; if ( ! i_status ) ps_dec -> i4_header_decoded |= 0x1 ; break ; case PIC_PARAM_NAL : ih264d_rbsp_to_sodb ( ps_dec -> ps_bitstrm ) ; i_status = ih264d_parse_pps ( ps_dec , ps_bitstrm ) ; if ( i_status == ERROR_INV_SPS_PPS_T ) return i_status ; if ( ! i_status ) ps_dec -> i4_header_decoded |= 0x2 ; break ; case ACCESS_UNIT_DELIMITER_RBSP : if ( ! ps_dec -> i4_decode_header ) { ih264d_access_unit_delimiter_rbsp ( ps_dec ) ; } break ; case END_OF_STREAM_RBSP : if ( ! ps_dec -> i4_decode_header ) { ih264d_parse_end_of_stream ( ps_dec ) ; } break ; case FILLER_DATA_NAL : if ( ! ps_dec -> i4_decode_header ) { ih264d_parse_filler_data ( ps_dec , ps_bitstrm ) ; } break ; default : H264_DEC_DEBUG_PRINT ( \"\\\\nUnknown<S2SV_blank>NAL<S2SV_blank>type<S2SV_blank>%d\\\\n\" , u1_nal_unit_type ) ; break ; } } } return i_status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u1_first_byte ) ; if ( ( ps_dec -> u2_total_mbs_coded != 0 ) && ( u1_nal_unit_type > IDR_SLICE_NAL ) ) { return ERROR_INCOMPLETE_FRAME ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static int simulate_sync ( struct pt_regs * regs , unsigned int opcode ) { if ( ( opcode & OPCODE ) == SPEC0 && ( opcode & FUNC ) == SYNC ) { perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> return 0 ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7125\n\n```\nCWE-74 PS_SERIALIZER_DECODE_FUNC ( php_binary ) { const char * p ; char * name ; const char * endptr = val + vallen ; zval * current ; int namelen ; int has_value ; php_unserialize_data_t var_hash ; <S2SV_StartBug> PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; <S2SV_EndBug> for ( p = val ; p < endptr ; ) { <S2SV_StartBug> zval * * tmp ; <S2SV_EndBug> namelen = ( ( unsigned char ) ( * p ) ) & ( ~ PS_BIN_UNDEF ) ; if ( namelen < 0 || namelen > PS_BIN_MAX || ( p + namelen ) >= endptr ) { PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return FAILURE ; } has_value = * p & PS_BIN_UNDEF ? 0 : 1 ; name = estrndup ( p + 1 , namelen ) ; p += namelen + 1 ; if ( zend_hash_find ( & EG ( symbol_table ) , name , namelen + 1 , ( void * * ) & tmp ) == SUCCESS ) { if ( ( Z_TYPE_PP ( tmp ) == IS_ARRAY && Z_ARRVAL_PP ( tmp ) == & EG ( symbol_table ) ) || * tmp == PS ( http_session_vars ) ) { <S2SV_StartBug> efree ( name ) ; <S2SV_EndBug> continue ; } } if ( has_value ) { ALLOC_INIT_ZVAL ( current ) ; if ( php_var_unserialize ( & current , ( const unsigned char * * ) & p , ( const unsigned char * ) endptr , & var_hash TSRMLS_CC ) ) { <S2SV_StartBug> php_set_session_var ( name , namelen , current , & var_hash TSRMLS_CC ) ; <S2SV_EndBug> } else { PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return FAILURE ; } var_push_dtor_no_addref ( & var_hash , & current ) ; } <S2SV_StartBug> PS_ADD_VARL ( name , namelen ) ; <S2SV_EndBug> efree ( name ) ; } PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> php_unserialize_data_t var_hash ; int skip = 0 ; <S2SV_ModStart> * * tmp ; skip = 0 <S2SV_ModStart> ) ) { skip = 1 <S2SV_ModEnd> ; } } <S2SV_ModStart> ) ) { if ( ! skip ) { <S2SV_ModStart> TSRMLS_CC ) ; } <S2SV_ModStart> ) ; } if ( ! skip ) { <S2SV_ModStart> namelen ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 int touch_file ( const char * path , bool parents , usec_t stamp , uid_t uid , gid_t gid , mode_t mode ) { _cleanup_close_ int fd ; int r ; assert ( path ) ; if ( parents ) mkdir_parents ( path , 0755 ) ; fd = open ( path , O_WRONLY | O_CREAT | O_CLOEXEC | O_NOCTTY , mode > 0 ? mode : 0644 ) ; if ( fd < 0 ) return - errno ; <S2SV_StartBug> if ( mode > 0 ) { <S2SV_EndBug> r = fchmod ( fd , mode ) ; if ( r < 0 ) return - errno ; } if ( uid != UID_INVALID || gid != GID_INVALID ) { r = fchown ( fd , uid , gid ) ; if ( r < 0 ) return - errno ; } if ( stamp != USEC_INFINITY ) { struct timespec ts [ 2 ] ; timespec_store ( & ts [ 0 ] , stamp ) ; ts [ 1 ] = ts [ 0 ] ; r = futimens ( fd , ts ) ; } else r = futimens ( fd , NULL ) ; if ( r < 0 ) return - errno ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( mode != MODE_INVALID <S2SV_ModEnd> ) { r\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8645\n\n```\nCWE-284 static int tcp_v6_do_rcv ( struct sock * sk , struct sk_buff * skb ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct tcp_sock * tp ; struct sk_buff * opt_skb = NULL ; if ( skb -> protocol == htons ( ETH_P_IP ) ) return tcp_v4_do_rcv ( sk , skb ) ; <S2SV_StartBug> if ( sk_filter ( sk , skb ) ) <S2SV_EndBug> goto discard ; if ( np -> rxopt . all ) opt_skb = skb_clone ( skb , sk_gfp_mask ( sk , GFP_ATOMIC ) ) ; if ( sk -> sk_state == TCP_ESTABLISHED ) { struct dst_entry * dst = sk -> sk_rx_dst ; sock_rps_save_rxhash ( sk , skb ) ; sk_mark_napi_id ( sk , skb ) ; if ( dst ) { if ( inet_sk ( sk ) -> rx_dst_ifindex != skb -> skb_iif || dst -> ops -> check ( dst , np -> rx_dst_cookie ) == NULL ) { dst_release ( dst ) ; sk -> sk_rx_dst = NULL ; } } tcp_rcv_established ( sk , skb , tcp_hdr ( skb ) , skb -> len ) ; if ( opt_skb ) goto ipv6_pktoptions ; return 0 ; } if ( tcp_checksum_complete ( skb ) ) goto csum_err ; if ( sk -> sk_state == TCP_LISTEN ) { struct sock * nsk = tcp_v6_cookie_check ( sk , skb ) ; if ( ! nsk ) goto discard ; if ( nsk != sk ) { sock_rps_save_rxhash ( nsk , skb ) ; sk_mark_napi_id ( nsk , skb ) ; if ( tcp_child_process ( sk , nsk , skb ) ) goto reset ; if ( opt_skb ) __kfree_skb ( opt_skb ) ; return 0 ; } } else sock_rps_save_rxhash ( sk , skb ) ; if ( tcp_rcv_state_process ( sk , skb ) ) goto reset ; if ( opt_skb ) goto ipv6_pktoptions ; return 0 ; reset : tcp_v6_send_reset ( sk , skb ) ; discard : if ( opt_skb ) __kfree_skb ( opt_skb ) ; kfree_skb ( skb ) ; return 0 ; csum_err : TCP_INC_STATS ( sock_net ( sk ) , TCP_MIB_CSUMERRORS ) ; TCP_INC_STATS ( sock_net ( sk ) , TCP_MIB_INERRS ) ; goto discard ; ipv6_pktoptions : tp = tcp_sk ( sk ) ; if ( TCP_SKB_CB ( opt_skb ) -> end_seq == tp -> rcv_nxt && ! ( ( 1 << sk -> sk_state ) & ( TCPF_CLOSE | TCPF_LISTEN ) ) ) { if ( np -> rxopt . bits . rxinfo || np -> rxopt . bits . rxoinfo ) np -> mcast_oif = tcp_v6_iif ( opt_skb ) ; if ( np -> rxopt . bits . rxhlim || np -> rxopt . bits . rxohlim ) np -> mcast_hops = ipv6_hdr ( opt_skb ) -> hop_limit ; if ( np -> rxopt . bits . rxflow || np -> rxopt . bits . rxtclass ) np -> rcv_flowinfo = ip6_flowinfo ( ipv6_hdr ( opt_skb ) ) ; if ( np -> repflow ) np -> flow_label = ip6_flowlabel ( ipv6_hdr ( opt_skb ) ) ; if ( ipv6_opt_accepted ( sk , opt_skb , & TCP_SKB_CB ( opt_skb ) -> header . h6 ) ) { skb_set_owner_r ( opt_skb , sk ) ; tcp_v6_restore_cb ( opt_skb ) ; opt_skb = xchg ( & np -> pktoptions , opt_skb ) ; } else { __kfree_skb ( opt_skb ) ; opt_skb = xchg ( & np -> pktoptions , NULL ) ; } } kfree_skb ( opt_skb ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( tcp_filter <S2SV_ModEnd> ( sk ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10537\n\n```\nCWE-119 int ParseWave64HeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t total_samples = 0 , infilesize ; Wave64ChunkHeader chunk_header ; Wave64FileHeader filehdr ; WaveHeader WaveHeader ; <S2SV_StartBug> uint32_t bcount ; <S2SV_EndBug> infilesize = DoGetFileSize ( infile ) ; memcpy ( & filehdr , fourcc , 4 ) ; if ( ! DoReadFile ( infile , ( ( char * ) & filehdr ) + 4 , sizeof ( Wave64FileHeader ) - 4 , & bcount ) || bcount != sizeof ( Wave64FileHeader ) - 4 || memcmp ( filehdr . ckID , riff_guid , sizeof ( riff_guid ) ) || memcmp ( filehdr . formType , wave_guid , sizeof ( wave_guid ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & filehdr , sizeof ( filehdr ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackLittleEndianToNative ( & filehdr , Wave64ChunkHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && filehdr . ckSize && filehdr . ckSize + 1 && filehdr . ckSize != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } # endif while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( Wave64ChunkHeader ) , & bcount ) || bcount != sizeof ( Wave64ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( Wave64ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , Wave64ChunkHeaderFormat ) ; chunk_header . ckSize -= sizeof ( chunk_header ) ; if ( ! memcmp ( chunk_header . ckID , fmt_guid , sizeof ( fmt_guid ) ) ) { <S2SV_StartBug> int supported = TRUE , format ; <S2SV_EndBug> chunk_header . ckSize = ( chunk_header . ckSize + 7 ) & ~ 7L ; if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , ( uint32_t ) chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , ( uint32_t ) chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.W64<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>W64<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! memcmp ( chunk_header . ckID , data_guid , sizeof ( data_guid ) ) ) { if ( ! WaveHeader . NumChannels ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ( config -> qmode & QMODE_IGNORE_LENGTH ) || chunk_header . ckSize <= 0 ) { config -> qmode |= QMODE_IGNORE_LENGTH ; if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { if ( infilesize && infilesize - chunk_header . ckSize > 16777216 ) { error_line ( \"this<S2SV_blank>.W64<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } total_samples = chunk_header . ckSize / WaveHeader . BlockAlign ; if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.W64<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 7 ) & ~ 7L ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> WaveHeader WaveHeader ; int format_chunk = 0 ; <S2SV_ModStart> , format ; if ( format_chunk ++ ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int get_max_filter_level ( VP9_COMP * cpi ) { <S2SV_EndBug> return cpi -> twopass . section_intra_rating > 8 ? MAX_LOOP_FILTER * 3 / 4 : MAX_LOOP_FILTER ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int get_max_filter_level ( const <S2SV_ModStart> VP9_COMP * cpi ) { if ( cpi -> oxcf . pass == 2 <S2SV_ModStart> MAX_LOOP_FILTER ; } else { return MAX_LOOP_FILTER ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3156\n\n```\nCWE-399 void fib_del_ifaddr ( struct in_ifaddr * ifa , struct in_ifaddr * iprim ) { struct in_device * in_dev = ifa -> ifa_dev ; struct net_device * dev = in_dev -> dev ; struct in_ifaddr * ifa1 ; struct in_ifaddr * prim = ifa , * prim1 = NULL ; __be32 brd = ifa -> ifa_address | ~ ifa -> ifa_mask ; __be32 any = ifa -> ifa_address & ifa -> ifa_mask ; # define LOCAL_OK 1 # define BRD_OK 2 # define BRD0_OK 4 # define BRD1_OK 8 unsigned int ok = 0 ; int subnet = 0 ; int gone = 1 ; int same_prefsrc = 0 ; if ( ifa -> ifa_flags & IFA_F_SECONDARY ) { prim = inet_ifa_byprefix ( in_dev , any , ifa -> ifa_mask ) ; if ( ! prim ) { pr_warn ( \"%s:<S2SV_blank>bug:<S2SV_blank>prim<S2SV_blank>==<S2SV_blank>NULL\\\\n\" , __func__ ) ; return ; } if ( iprim && iprim != prim ) { pr_warn ( \"%s:<S2SV_blank>bug:<S2SV_blank>iprim<S2SV_blank>!=<S2SV_blank>prim\\\\n\" , __func__ ) ; return ; } } else if ( ! ipv4_is_zeronet ( any ) && ( any != ifa -> ifa_local || ifa -> ifa_prefixlen < 32 ) ) { if ( ! ( ifa -> ifa_flags & IFA_F_NOPREFIXROUTE ) ) fib_magic ( RTM_DELROUTE , dev -> flags & IFF_LOOPBACK ? RTN_LOCAL : RTN_UNICAST , any , ifa -> ifa_prefixlen , prim ) ; subnet = 1 ; } <S2SV_StartBug> for ( ifa1 = in_dev -> ifa_list ; ifa1 ; ifa1 = ifa1 -> ifa_next ) { <S2SV_EndBug> if ( ifa1 == ifa ) { gone = 0 ; continue ; } if ( iprim && ifa1 -> ifa_mask == iprim -> ifa_mask && inet_ifa_match ( ifa1 -> ifa_address , iprim ) ) continue ; if ( ifa1 -> ifa_flags & IFA_F_SECONDARY ) { if ( ifa1 -> ifa_mask == prim -> ifa_mask && inet_ifa_match ( ifa1 -> ifa_address , prim ) ) prim1 = prim ; else { if ( ! same_prefsrc ) continue ; if ( ! prim1 || ifa1 -> ifa_mask != prim1 -> ifa_mask || ! inet_ifa_match ( ifa1 -> ifa_address , prim1 ) ) prim1 = inet_ifa_byprefix ( in_dev , ifa1 -> ifa_address , ifa1 -> ifa_mask ) ; if ( ! prim1 ) continue ; if ( prim1 -> ifa_local != prim -> ifa_local ) continue ; } } else { if ( prim -> ifa_local != ifa1 -> ifa_local ) continue ; prim1 = ifa1 ; if ( prim != prim1 ) same_prefsrc = 1 ; } if ( ifa -> ifa_local == ifa1 -> ifa_local ) ok |= LOCAL_OK ; if ( ifa -> ifa_broadcast == ifa1 -> ifa_broadcast ) ok |= BRD_OK ; if ( brd == ifa1 -> ifa_broadcast ) ok |= BRD1_OK ; if ( any == ifa1 -> ifa_broadcast ) ok |= BRD0_OK ; if ( prim1 == ifa1 && ifa1 -> ifa_prefixlen < 31 ) { __be32 brd1 = ifa1 -> ifa_address | ~ ifa1 -> ifa_mask ; __be32 any1 = ifa1 -> ifa_address & ifa1 -> ifa_mask ; if ( ! ipv4_is_zeronet ( any1 ) ) { if ( ifa -> ifa_broadcast == brd1 || ifa -> ifa_broadcast == any1 ) ok |= BRD_OK ; if ( brd == brd1 || brd == any1 ) ok |= BRD1_OK ; if ( any == brd1 || any == any1 ) ok |= BRD0_OK ; } } <S2SV_StartBug> } <S2SV_EndBug> if ( ! ( ok & BRD_OK ) ) fib_magic ( RTM_DELROUTE , RTN_BROADCAST , ifa -> ifa_broadcast , 32 , prim ) ; if ( subnet && ifa -> ifa_prefixlen < 31 ) { if ( ! ( ok & BRD1_OK ) ) fib_magic ( RTM_DELROUTE , RTN_BROADCAST , brd , 32 , prim ) ; if ( ! ( ok & BRD0_OK ) ) fib_magic ( RTM_DELROUTE , RTN_BROADCAST , any , 32 , prim ) ; } if ( ! ( ok & LOCAL_OK ) ) { unsigned int addr_type ; fib_magic ( RTM_DELROUTE , RTN_LOCAL , ifa -> ifa_local , 32 , prim ) ; addr_type = inet_addr_type_dev_table ( dev_net ( dev ) , dev , ifa -> ifa_local ) ; if ( gone && addr_type != RTN_LOCAL ) { if ( fib_sync_down_addr ( dev_net ( dev ) , ifa -> ifa_local ) ) fib_flush ( dev_net ( dev ) ) ; } } # undef LOCAL_OK # undef BRD_OK # undef BRD0_OK # undef BRD1_OK }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; } if ( in_dev -> dead ) goto no_promotions ; <S2SV_ModStart> } } } no_promotions :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9191\n\n```\nCWE-20 static int proc_sys_readdir ( struct file * file , struct dir_context * ctx ) { struct ctl_table_header * head = grab_header ( file_inode ( file ) ) ; struct ctl_table_header * h = NULL ; struct ctl_table * entry ; struct ctl_dir * ctl_dir ; unsigned long pos ; if ( IS_ERR ( head ) ) return PTR_ERR ( head ) ; ctl_dir = container_of ( head , struct ctl_dir , header ) ; if ( ! dir_emit_dots ( file , ctx ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pos = 2 ; for ( first_entry ( ctl_dir , & h , & entry ) ; h ; next_entry ( & h , & entry ) ) { if ( ! scan ( h , entry , & pos , file , ctx ) ) { sysctl_head_finish ( h ) ; break ; } } <S2SV_StartBug> sysctl_head_finish ( head ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx ) ) goto out <S2SV_ModEnd> ; pos = <S2SV_ModStart> ; } } out :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31255\n\n```\nCWE-120 GF_Err abst_box_read ( GF_Box * s , GF_BitStream * bs ) { GF_AdobeBootstrapInfoBox * ptr = ( GF_AdobeBootstrapInfoBox * ) s ; int i ; u32 tmp_strsize ; <S2SV_StartBug> char * tmp_str ; <S2SV_EndBug> GF_Err e ; ISOM_DECREASE_SIZE ( ptr , 25 ) ptr -> bootstrapinfo_version = gf_bs_read_u32 ( bs ) ; ptr -> profile = gf_bs_read_int ( bs , 2 ) ; ptr -> live = gf_bs_read_int ( bs , 1 ) ; ptr -> update = gf_bs_read_int ( bs , 1 ) ; ptr -> reserved = gf_bs_read_int ( bs , 4 ) ; ptr -> time_scale = gf_bs_read_u32 ( bs ) ; ptr -> current_media_time = gf_bs_read_u64 ( bs ) ; ptr -> smpte_time_code_offset = gf_bs_read_u64 ( bs ) ; i = 0 ; if ( ptr -> size < 8 ) return GF_ISOM_INVALID_FILE ; tmp_strsize = ( u32 ) ptr -> size ; tmp_str = gf_malloc ( sizeof ( char ) * tmp_strsize ) ; if ( ! tmp_str ) return GF_OUT_OF_MEM ; memset ( tmp_str , 0 , sizeof ( char ) * tmp_strsize ) ; while ( tmp_strsize ) { ISOM_DECREASE_SIZE ( ptr , 1 ) tmp_str [ i ] = gf_bs_read_u8 ( bs ) ; tmp_strsize -- ; <S2SV_StartBug> if ( ! tmp_str [ i ] ) <S2SV_EndBug> break ; i ++ ; <S2SV_StartBug> } <S2SV_EndBug> if ( i ) { ptr -> movie_identifier = gf_strdup ( tmp_str ) ; } ISOM_DECREASE_SIZE ( ptr , 1 ) ptr -> server_entry_count = gf_bs_read_u8 ( bs ) ; for ( i = 0 ; i < ptr -> server_entry_count ; i ++ ) { <S2SV_StartBug> int j = 0 ; <S2SV_EndBug> tmp_strsize = ( u32 ) ptr -> size ; while ( tmp_strsize ) { ISOM_DECREASE_SIZE ( ptr , 1 ) tmp_str [ j ] = gf_bs_read_u8 ( bs ) ; tmp_strsize -- ; <S2SV_StartBug> if ( ! tmp_str [ j ] ) <S2SV_EndBug> break ; j ++ ; } <S2SV_StartBug> if ( j ) { <S2SV_EndBug> gf_list_insert ( ptr -> server_entry_table , gf_strdup ( tmp_str ) , i ) ; } } ISOM_DECREASE_SIZE ( ptr , 1 ) ptr -> quality_entry_count = gf_bs_read_u8 ( bs ) ; for ( i = 0 ; i < ptr -> quality_entry_count ; i ++ ) { <S2SV_StartBug> int j = 0 ; <S2SV_EndBug> tmp_strsize = ( u32 ) ptr -> size ; while ( tmp_strsize ) { ISOM_DECREASE_SIZE ( ptr , 1 ) tmp_str [ j ] = gf_bs_read_u8 ( bs ) ; tmp_strsize -- ; <S2SV_StartBug> if ( ! tmp_str [ j ] ) <S2SV_EndBug> break ; j ++ ; } <S2SV_StartBug> if ( j ) { <S2SV_EndBug> gf_list_insert ( ptr -> quality_entry_table , gf_strdup ( tmp_str ) , i ) ; } } i = 0 ; tmp_strsize = ( u32 ) ptr -> size ; <S2SV_StartBug> while ( tmp_strsize ) { <S2SV_EndBug> ISOM_DECREASE_SIZE ( ptr , 1 ) tmp_str [ i ] = gf_bs_read_u8 ( bs ) ; tmp_strsize -- ; <S2SV_StartBug> if ( ! tmp_str [ i ] ) <S2SV_EndBug> break ; i ++ ; } <S2SV_StartBug> if ( i ) { <S2SV_EndBug> ptr -> drm_data = gf_strdup ( tmp_str ) ; } i = 0 ; tmp_strsize = ( u32 ) ptr -> size ; <S2SV_StartBug> while ( tmp_strsize ) { <S2SV_EndBug> ISOM_DECREASE_SIZE ( ptr , 1 ) tmp_str [ i ] = gf_bs_read_u8 ( bs ) ; tmp_strsize -- ; <S2SV_StartBug> if ( ! tmp_str [ i ] ) <S2SV_EndBug> break ; i ++ ; <S2SV_StartBug> } <S2SV_EndBug> if ( i ) { ptr -> meta_data = gf_strdup ( tmp_str ) ; } ISOM_DECREASE_SIZE ( ptr , 1 ) ptr -> segment_run_table_count = gf_bs_read_u8 ( bs ) ; for ( i = 0 ; i < ptr -> segment_run_table_count ; i ++ ) { GF_AdobeSegmentRunTableBox * asrt = NULL ; e = gf_isom_box_parse ( ( GF_Box * * ) & asrt , bs ) ; if ( e ) { if ( asrt ) gf_isom_box_del ( ( GF_Box * ) asrt ) ; gf_free ( tmp_str ) ; return e ; } gf_list_add ( ptr -> segment_run_table_entries , asrt ) ; } ISOM_DECREASE_SIZE ( ptr , 1 ) ptr -> fragment_run_table_count = gf_bs_read_u8 ( bs ) ; for ( i = 0 ; i < ptr -> fragment_run_table_count ; i ++ ) { GF_AdobeFragmentRunTableBox * afrt = NULL ; e = gf_isom_box_parse ( ( GF_Box * * ) & afrt , bs ) ; if ( e ) { if ( afrt ) gf_isom_box_del ( ( GF_Box * ) afrt ) ; gf_free ( tmp_str ) ; return e ; } gf_list_add ( ptr -> fragment_run_table_entries , afrt ) ; } gf_free ( tmp_str ) ; return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * tmp_str ; Bool zfound = GF_FALSE <S2SV_ModStart> i ] ) { zfound = GF_TRUE ; break ; } <S2SV_ModEnd> i ++ ; <S2SV_ModStart> ++ ; } if ( ! zfound ) return GF_ISOM_INVALID_FILE ; <S2SV_ModStart> j = 0 ; zfound = GF_FALSE <S2SV_ModStart> j ] ) { zfound = GF_TRUE ; break ; } <S2SV_ModEnd> j ++ ; <S2SV_ModStart> } if ( ! zfound ) return GF_ISOM_INVALID_FILE ; if ( <S2SV_ModStart> j = 0 ; zfound = GF_FALSE <S2SV_ModStart> j ] ) { zfound = GF_TRUE ; break ; } <S2SV_ModEnd> j ++ ; <S2SV_ModStart> } if ( ! zfound ) return GF_ISOM_INVALID_FILE ; if ( <S2SV_ModStart> -> size ; zfound = GF_FALSE ; <S2SV_ModStart> i ] ) { zfound = GF_TRUE ; break ; } <S2SV_ModEnd> i ++ ; <S2SV_ModStart> } if ( ! zfound ) return GF_ISOM_INVALID_FILE ; if ( <S2SV_ModStart> -> size ; zfound = GF_FALSE ; <S2SV_ModStart> i ] ) { zfound = GF_TRUE ; break ; } <S2SV_ModEnd> i ++ ; <S2SV_ModStart> ++ ; } if ( ! zfound ) return GF_ISOM_INVALID_FILE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext4_xattr_block_get ( struct inode * inode , int name_index , const char * name , void * buffer , size_t buffer_size ) { struct buffer_head * bh = NULL ; struct ext4_xattr_entry * entry ; size_t size ; int error ; <S2SV_StartBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; <S2SV_EndBug> ea_idebug ( inode , \"name=%d.%s,<S2SV_blank>buffer=%p,<S2SV_blank>buffer_size=%ld\" , name_index , name , buffer , ( long ) buffer_size ) ; error = - ENODATA ; if ( ! EXT4_I ( inode ) -> i_file_acl ) goto cleanup ; ea_idebug ( inode , \"reading<S2SV_blank>block<S2SV_blank>%llu\" , ( unsigned long long ) EXT4_I ( inode ) -> i_file_acl ) ; bh = sb_bread ( inode -> i_sb , EXT4_I ( inode ) -> i_file_acl ) ; if ( ! bh ) goto cleanup ; ea_bdebug ( bh , \"b_count=%d,<S2SV_blank>refcount=%d\" , atomic_read ( & ( bh -> b_count ) ) , le32_to_cpu ( BHDR ( bh ) -> h_refcount ) ) ; if ( ext4_xattr_check_block ( inode , bh ) ) { bad_block : EXT4_ERROR_INODE ( inode , \"bad<S2SV_blank>block<S2SV_blank>%llu\" , EXT4_I ( inode ) -> i_file_acl ) ; error = - EFSCORRUPTED ; goto cleanup ; } ext4_xattr_cache_insert ( ext4_mb_cache , bh ) ; entry = BFIRST ( bh ) ; error = ext4_xattr_find_entry ( & entry , name_index , name , bh -> b_size , 1 ) ; if ( error == - EFSCORRUPTED ) goto bad_block ; if ( error ) goto cleanup ; size = le32_to_cpu ( entry -> e_value_size ) ; if ( buffer ) { error = - ERANGE ; if ( size > buffer_size ) goto cleanup ; memcpy ( buffer , bh -> b_data + le16_to_cpu ( entry -> e_value_offs ) , size ) ; } error = size ; cleanup : brelse ( bh ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error ; struct mb2_cache <S2SV_ModEnd> * ext4_mb_cache =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-191(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10268\n\n```\nCWE-191 DECLAREcpFunc ( cpDecodedStrips ) { tsize_t stripsize = TIFFStripSize ( in ) ; tdata_t buf = _TIFFmalloc ( stripsize ) ; ( void ) imagewidth ; ( void ) spp ; if ( buf ) { tstrip_t s , ns = TIFFNumberOfStrips ( in ) ; uint32 row = 0 ; _TIFFmemset ( buf , 0 , stripsize ) ; <S2SV_StartBug> for ( s = 0 ; s < ns ; s ++ ) { <S2SV_EndBug> tsize_t cc = ( row + rowsperstrip > imagelength ) ? TIFFVStripSize ( in , imagelength - row ) : stripsize ; if ( TIFFReadEncodedStrip ( in , s , buf , cc ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>strip<S2SV_blank>%lu\" , ( unsigned long ) s ) ; goto bad ; } if ( TIFFWriteEncodedStrip ( out , s , buf , cc ) < 0 ) { TIFFError ( TIFFFileName ( out ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>write<S2SV_blank>strip<S2SV_blank>%lu\" , ( unsigned long ) s ) ; goto bad ; } row += rowsperstrip ; } _TIFFfree ( buf ) ; return 1 ; } else { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>buffer<S2SV_blank>of<S2SV_blank>size<S2SV_blank>%lu<S2SV_blank>\" \"to<S2SV_blank>read<S2SV_blank>strips\" , ( unsigned long ) stripsize ) ; return 0 ; } bad : _TIFFfree ( buf ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s < ns && row < imagelength\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5532\n\n```\nCWE-000 int main ( void ) { int fd , len , sock_opt ; int error ; struct cn_msg * message ; struct pollfd pfd ; struct nlmsghdr * incoming_msg ; struct cn_msg * incoming_cn_msg ; struct hv_kvp_msg * hv_msg ; char * p ; char * key_value ; char * key_name ; int op ; int pool ; char * if_name ; struct hv_kvp_ipaddr_value * kvp_ip_val ; daemon ( 1 , 0 ) ; openlog ( \"KVP\" , 0 , LOG_USER ) ; syslog ( LOG_INFO , \"KVP<S2SV_blank>starting;<S2SV_blank>pid<S2SV_blank>is:%d\" , getpid ( ) ) ; kvp_get_os_info ( ) ; if ( kvp_file_init ( ) ) { syslog ( LOG_ERR , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>the<S2SV_blank>pools\" ) ; exit ( EXIT_FAILURE ) ; } fd = socket ( AF_NETLINK , SOCK_DGRAM , NETLINK_CONNECTOR ) ; if ( fd < 0 ) { syslog ( LOG_ERR , \"netlink<S2SV_blank>socket<S2SV_blank>creation<S2SV_blank>failed;<S2SV_blank>error:%d\" , fd ) ; exit ( EXIT_FAILURE ) ; } addr . nl_family = AF_NETLINK ; addr . nl_pad = 0 ; addr . nl_pid = 0 ; addr . nl_groups = CN_KVP_IDX ; error = bind ( fd , ( struct sockaddr * ) & addr , sizeof ( addr ) ) ; if ( error < 0 ) { syslog ( LOG_ERR , \"bind<S2SV_blank>failed;<S2SV_blank>error:%d\" , error ) ; close ( fd ) ; exit ( EXIT_FAILURE ) ; } sock_opt = addr . nl_groups ; setsockopt ( fd , 270 , 1 , & sock_opt , sizeof ( sock_opt ) ) ; message = ( struct cn_msg * ) kvp_send_buffer ; message -> id . idx = CN_KVP_IDX ; message -> id . val = CN_KVP_VAL ; hv_msg = ( struct hv_kvp_msg * ) message -> data ; hv_msg -> kvp_hdr . operation = KVP_OP_REGISTER1 ; message -> ack = 0 ; message -> len = sizeof ( struct hv_kvp_msg ) ; len = netlink_send ( fd , message ) ; if ( len < 0 ) { syslog ( LOG_ERR , \"netlink_send<S2SV_blank>failed;<S2SV_blank>error:%d\" , len ) ; close ( fd ) ; exit ( EXIT_FAILURE ) ; } pfd . fd = fd ; while ( 1 ) { struct sockaddr * addr_p = ( struct sockaddr * ) & addr ; socklen_t addr_l = sizeof ( addr ) ; pfd . events = POLLIN ; pfd . revents = 0 ; poll ( & pfd , 1 , - 1 ) ; len = recvfrom ( fd , kvp_recv_buffer , sizeof ( kvp_recv_buffer ) , 0 , addr_p , & addr_l ) ; <S2SV_StartBug> if ( len < 0 || addr . nl_pid ) { <S2SV_EndBug> syslog ( LOG_ERR , \"recvfrom<S2SV_blank>failed;<S2SV_blank>pid:%u<S2SV_blank>error:%d<S2SV_blank>%s\" , addr . nl_pid , errno , strerror ( errno ) ) ; close ( fd ) ; return - 1 ; } <S2SV_StartBug> incoming_msg = ( struct nlmsghdr * ) kvp_recv_buffer ; <S2SV_EndBug> incoming_cn_msg = ( struct cn_msg * ) NLMSG_DATA ( incoming_msg ) ; hv_msg = ( struct hv_kvp_msg * ) incoming_cn_msg -> data ; op = hv_msg -> kvp_hdr . operation ; pool = hv_msg -> kvp_hdr . pool ; hv_msg -> error = HV_S_OK ; if ( ( in_hand_shake ) && ( op == KVP_OP_REGISTER1 ) ) { in_hand_shake = 0 ; p = ( char * ) hv_msg -> body . kvp_register . version ; lic_version = malloc ( strlen ( p ) + 1 ) ; if ( lic_version ) { strcpy ( lic_version , p ) ; syslog ( LOG_INFO , \"KVP<S2SV_blank>LIC<S2SV_blank>Version:<S2SV_blank>%s\" , lic_version ) ; } else { syslog ( LOG_ERR , \"malloc<S2SV_blank>failed\" ) ; } continue ; } switch ( op ) { case KVP_OP_GET_IP_INFO : kvp_ip_val = & hv_msg -> body . kvp_ip_val ; if_name = kvp_mac_to_if_name ( ( char * ) kvp_ip_val -> adapter_id ) ; if ( if_name == NULL ) { hv_msg -> error = HV_E_FAIL ; break ; } error = kvp_get_ip_info ( 0 , if_name , KVP_OP_GET_IP_INFO , kvp_ip_val , ( MAX_IP_ADDR_SIZE * 2 ) ) ; if ( error ) hv_msg -> error = error ; free ( if_name ) ; break ; case KVP_OP_SET_IP_INFO : kvp_ip_val = & hv_msg -> body . kvp_ip_val ; if_name = kvp_get_if_name ( ( char * ) kvp_ip_val -> adapter_id ) ; if ( if_name == NULL ) { hv_msg -> error = HV_GUID_NOTFOUND ; break ; } error = kvp_set_ip_info ( if_name , kvp_ip_val ) ; if ( error ) hv_msg -> error = error ; free ( if_name ) ; break ; case KVP_OP_SET : if ( kvp_key_add_or_modify ( pool , hv_msg -> body . kvp_set . data . key , hv_msg -> body . kvp_set . data . key_size , hv_msg -> body . kvp_set . data . value , hv_msg -> body . kvp_set . data . value_size ) ) hv_msg -> error = HV_S_CONT ; break ; case KVP_OP_GET : if ( kvp_get_value ( pool , hv_msg -> body . kvp_set . data . key , hv_msg -> body . kvp_set . data . key_size , hv_msg -> body . kvp_set . data . value , hv_msg -> body . kvp_set . data . value_size ) ) hv_msg -> error = HV_S_CONT ; break ; case KVP_OP_DELETE : if ( kvp_key_delete ( pool , hv_msg -> body . kvp_delete . key , hv_msg -> body . kvp_delete . key_size ) ) hv_msg -> error = HV_S_CONT ; break ; default : break ; } if ( op != KVP_OP_ENUMERATE ) goto kvp_done ; if ( pool != KVP_POOL_AUTO ) { if ( kvp_pool_enumerate ( pool , hv_msg -> body . kvp_enum_data . index , hv_msg -> body . kvp_enum_data . data . key , HV_KVP_EXCHANGE_MAX_KEY_SIZE , hv_msg -> body . kvp_enum_data . data . value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ) hv_msg -> error = HV_S_CONT ; goto kvp_done ; } hv_msg = ( struct hv_kvp_msg * ) incoming_cn_msg -> data ; key_name = ( char * ) hv_msg -> body . kvp_enum_data . data . key ; key_value = ( char * ) hv_msg -> body . kvp_enum_data . data . value ; switch ( hv_msg -> body . kvp_enum_data . index ) { case FullyQualifiedDomainName : kvp_get_domain_name ( key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"FullyQualifiedDomainName\" ) ; break ; case IntegrationServicesVersion : strcpy ( key_name , \"IntegrationServicesVersion\" ) ; strcpy ( key_value , lic_version ) ; break ; case NetworkAddressIPv4 : kvp_get_ip_info ( AF_INET , NULL , KVP_OP_ENUMERATE , key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"NetworkAddressIPv4\" ) ; break ; case NetworkAddressIPv6 : kvp_get_ip_info ( AF_INET6 , NULL , KVP_OP_ENUMERATE , key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"NetworkAddressIPv6\" ) ; break ; case OSBuildNumber : strcpy ( key_value , os_build ) ; strcpy ( key_name , \"OSBuildNumber\" ) ; break ; case OSName : strcpy ( key_value , os_name ) ; strcpy ( key_name , \"OSName\" ) ; break ; case OSMajorVersion : strcpy ( key_value , os_major ) ; strcpy ( key_name , \"OSMajorVersion\" ) ; break ; case OSMinorVersion : strcpy ( key_value , os_minor ) ; strcpy ( key_name , \"OSMinorVersion\" ) ; break ; case OSVersion : strcpy ( key_value , os_version ) ; strcpy ( key_name , \"OSVersion\" ) ; break ; case ProcessorArchitecture : strcpy ( key_value , processor_arch ) ; strcpy ( key_name , \"ProcessorArchitecture\" ) ; break ; default : hv_msg -> error = HV_S_CONT ; break ; } kvp_done : incoming_cn_msg -> id . idx = CN_KVP_IDX ; incoming_cn_msg -> id . val = CN_KVP_VAL ; incoming_cn_msg -> ack = 0 ; incoming_cn_msg -> len = sizeof ( struct hv_kvp_msg ) ; len = netlink_send ( fd , incoming_cn_msg ) ; if ( len < 0 ) { syslog ( LOG_ERR , \"net_link<S2SV_blank>send<S2SV_blank>failed;<S2SV_blank>error:%d\" , len ) ; exit ( EXIT_FAILURE ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len < 0 <S2SV_ModEnd> ) { syslog <S2SV_ModStart> 1 ; } if ( addr . nl_pid ) { syslog ( LOG_WARNING , \"Received<S2SV_blank>packet<S2SV_blank>from<S2SV_blank>untrusted<S2SV_blank>pid:%u\" , addr . nl_pid ) ; continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> int ntlm_read_message_header ( wStream * s , NTLM_MESSAGE_HEADER * header ) <S2SV_EndBug> { if ( Stream_GetRemainingLength ( s ) < 12 ) return - 1 ; Stream_Read ( s , header -> Signature , 8 ) ; Stream_Read_UINT32 ( s , header -> MessageType ) ; if ( strncmp ( ( char * ) header -> Signature , NTLM_SIGNATURE , 8 ) != 0 ) return - 1 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13304\n\n```\nCWE-617 static enum AVPixelFormat h263_get_format ( AVCodecContext * avctx ) <S2SV_StartBug> { <S2SV_EndBug> if ( avctx -> bits_per_raw_sample > 8 ) { <S2SV_StartBug> av_assert1 ( avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) ; <S2SV_EndBug> return avctx -> pix_fmt ; } if ( avctx -> codec -> id == AV_CODEC_ID_MSS2 ) return AV_PIX_FMT_YUV420P ; if ( CONFIG_GRAY && ( avctx -> flags & AV_CODEC_FLAG_GRAY ) ) { if ( avctx -> color_range == AVCOL_RANGE_UNSPECIFIED ) avctx -> color_range = AVCOL_RANGE_MPEG ; return AV_PIX_FMT_GRAY8 ; } return avctx -> pix_fmt = ff_get_format ( avctx , avctx -> codec -> pix_fmts ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> avctx ) { MpegEncContext * s = avctx -> priv_data ; <S2SV_ModStart> { av_assert1 ( s -> studio_profile <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 static int dccp_v6_connect ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct sockaddr_in6 * usin = ( struct sockaddr_in6 * ) uaddr ; struct inet_connection_sock * icsk = inet_csk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct dccp_sock * dp = dccp_sk ( sk ) ; <S2SV_StartBug> struct in6_addr * saddr = NULL , * final_p , final ; <S2SV_EndBug> struct flowi6 fl6 ; struct dst_entry * dst ; int addr_type ; int err ; dp -> dccps_role = DCCP_ROLE_CLIENT ; if ( addr_len < SIN6_LEN_RFC2133 ) return - EINVAL ; if ( usin -> sin6_family != AF_INET6 ) return - EAFNOSUPPORT ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; if ( np -> sndflow ) { fl6 . flowlabel = usin -> sin6_flowinfo & IPV6_FLOWINFO_MASK ; IP6_ECN_flow_init ( fl6 . flowlabel ) ; if ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) { struct ip6_flowlabel * flowlabel ; flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( flowlabel == NULL ) return - EINVAL ; fl6_sock_release ( flowlabel ) ; } } if ( ipv6_addr_any ( & usin -> sin6_addr ) ) usin -> sin6_addr . s6_addr [ 15 ] = 1 ; addr_type = ipv6_addr_type ( & usin -> sin6_addr ) ; if ( addr_type & IPV6_ADDR_MULTICAST ) return - ENETUNREACH ; if ( addr_type & IPV6_ADDR_LINKLOCAL ) { if ( addr_len >= sizeof ( struct sockaddr_in6 ) && usin -> sin6_scope_id ) { if ( sk -> sk_bound_dev_if && sk -> sk_bound_dev_if != usin -> sin6_scope_id ) return - EINVAL ; sk -> sk_bound_dev_if = usin -> sin6_scope_id ; } if ( ! sk -> sk_bound_dev_if ) return - EINVAL ; } sk -> sk_v6_daddr = usin -> sin6_addr ; np -> flow_label = fl6 . flowlabel ; if ( addr_type == IPV6_ADDR_MAPPED ) { u32 exthdrlen = icsk -> icsk_ext_hdr_len ; struct sockaddr_in sin ; SOCK_DEBUG ( sk , \"connect:<S2SV_blank>ipv4<S2SV_blank>mapped\\\\n\" ) ; if ( __ipv6_only_sock ( sk ) ) return - ENETUNREACH ; sin . sin_family = AF_INET ; sin . sin_port = usin -> sin6_port ; sin . sin_addr . s_addr = usin -> sin6_addr . s6_addr32 [ 3 ] ; icsk -> icsk_af_ops = & dccp_ipv6_mapped ; sk -> sk_backlog_rcv = dccp_v4_do_rcv ; err = dccp_v4_connect ( sk , ( struct sockaddr * ) & sin , sizeof ( sin ) ) ; if ( err ) { icsk -> icsk_ext_hdr_len = exthdrlen ; icsk -> icsk_af_ops = & dccp_ipv6_af_ops ; sk -> sk_backlog_rcv = dccp_v6_do_rcv ; goto failure ; } np -> saddr = sk -> sk_v6_rcv_saddr ; return err ; } if ( ! ipv6_addr_any ( & sk -> sk_v6_rcv_saddr ) ) saddr = & sk -> sk_v6_rcv_saddr ; fl6 . flowi6_proto = IPPROTO_DCCP ; fl6 . daddr = sk -> sk_v6_daddr ; fl6 . saddr = saddr ? * saddr : np -> saddr ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . fl6_dport = usin -> sin6_port ; fl6 . fl6_sport = inet -> inet_sport ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , np -> opt , & final ) ; <S2SV_EndBug> dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) { err = PTR_ERR ( dst ) ; goto failure ; } if ( saddr == NULL ) { saddr = & fl6 . saddr ; sk -> sk_v6_rcv_saddr = * saddr ; } np -> saddr = * saddr ; inet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; __ip6_dst_store ( sk , dst , NULL , NULL ) ; icsk -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( np -> opt != NULL ) <S2SV_EndBug> <S2SV_StartBug> icsk -> icsk_ext_hdr_len = ( np -> opt -> opt_flen + <S2SV_EndBug> <S2SV_StartBug> np -> opt -> opt_nflen ) ; <S2SV_EndBug> inet -> inet_dport = usin -> sin6_port ; dccp_set_state ( sk , DCCP_REQUESTING ) ; err = inet6_hash_connect ( & dccp_death_row , sk ) ; if ( err ) goto late_failure ; dp -> dccps_iss = secure_dccpv6_sequence_number ( np -> saddr . s6_addr32 , sk -> sk_v6_daddr . s6_addr32 , inet -> inet_sport , inet -> inet_dport ) ; err = dccp_connect ( sk ) ; if ( err ) goto late_failure ; return 0 ; late_failure : dccp_set_state ( sk , DCCP_CLOSED ) ; __sk_dst_reset ( sk ) ; failure : inet -> inet_dport = 0 ; sk -> sk_route_caps = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> final_p , final ; struct ipv6_txoptions * opt <S2SV_ModStart> ) ) ; opt = rcu_dereference_protected ( np -> opt , sock_owned_by_user ( sk ) ) ; <S2SV_ModStart> & fl6 , <S2SV_ModEnd> opt , & <S2SV_ModStart> ; if ( opt <S2SV_ModEnd> ) icsk -> <S2SV_ModStart> -> icsk_ext_hdr_len = <S2SV_ModEnd> opt -> opt_flen <S2SV_ModStart> -> opt_flen + <S2SV_ModEnd> opt -> opt_nflen <S2SV_ModStart> opt -> opt_nflen <S2SV_ModEnd> ; inet ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_change_config ( VP8_COMP * cpi , VP8_CONFIG * oxcf ) { VP8_COMMON * cm = & cpi -> common ; int last_w , last_h , prev_number_of_layers ; if ( ! cpi ) return ; if ( ! oxcf ) return ; # if CONFIG_MULTITHREAD if ( cpi -> b_lpf_running ) { sem_wait ( & cpi -> h_event_end_lpf ) ; cpi -> b_lpf_running = 0 ; } # endif if ( cm -> version != oxcf -> Version ) { cm -> version = oxcf -> Version ; vp8_setup_version ( cm ) ; } last_w = cpi -> oxcf . Width ; last_h = cpi -> oxcf . Height ; prev_number_of_layers = cpi -> oxcf . number_of_layers ; cpi -> oxcf = * oxcf ; switch ( cpi -> oxcf . Mode ) { case MODE_REALTIME : cpi -> pass = 0 ; cpi -> compressor_speed = 2 ; if ( cpi -> oxcf . cpu_used < - 16 ) { cpi -> oxcf . cpu_used = - 16 ; } if ( cpi -> oxcf . cpu_used > 16 ) cpi -> oxcf . cpu_used = 16 ; break ; case MODE_GOODQUALITY : cpi -> pass = 0 ; cpi -> compressor_speed = 1 ; if ( cpi -> oxcf . cpu_used < - 5 ) { cpi -> oxcf . cpu_used = - 5 ; } if ( cpi -> oxcf . cpu_used > 5 ) cpi -> oxcf . cpu_used = 5 ; break ; case MODE_BESTQUALITY : cpi -> pass = 0 ; cpi -> compressor_speed = 0 ; break ; case MODE_FIRSTPASS : cpi -> pass = 1 ; cpi -> compressor_speed = 1 ; break ; case MODE_SECONDPASS : cpi -> pass = 2 ; cpi -> compressor_speed = 1 ; if ( cpi -> oxcf . cpu_used < - 5 ) { cpi -> oxcf . cpu_used = - 5 ; } if ( cpi -> oxcf . cpu_used > 5 ) cpi -> oxcf . cpu_used = 5 ; break ; case MODE_SECONDPASS_BEST : cpi -> pass = 2 ; cpi -> compressor_speed = 0 ; break ; } if ( cpi -> pass == 0 ) cpi -> auto_worst_q = 1 ; cpi -> oxcf . worst_allowed_q = q_trans [ oxcf -> worst_allowed_q ] ; cpi -> oxcf . best_allowed_q = q_trans [ oxcf -> best_allowed_q ] ; cpi -> oxcf . cq_level = q_trans [ cpi -> oxcf . cq_level ] ; if ( oxcf -> fixed_q >= 0 ) { if ( oxcf -> worst_allowed_q < 0 ) cpi -> oxcf . fixed_q = q_trans [ 0 ] ; else cpi -> oxcf . fixed_q = q_trans [ oxcf -> worst_allowed_q ] ; if ( oxcf -> alt_q < 0 ) cpi -> oxcf . alt_q = q_trans [ 0 ] ; else cpi -> oxcf . alt_q = q_trans [ oxcf -> alt_q ] ; if ( oxcf -> key_q < 0 ) cpi -> oxcf . key_q = q_trans [ 0 ] ; else cpi -> oxcf . key_q = q_trans [ oxcf -> key_q ] ; if ( oxcf -> gold_q < 0 ) cpi -> oxcf . gold_q = q_trans [ 0 ] ; else cpi -> oxcf . gold_q = q_trans [ oxcf -> gold_q ] ; } cpi -> baseline_gf_interval = cpi -> oxcf . alt_freq ? cpi -> oxcf . alt_freq : DEFAULT_GF_INTERVAL ; <S2SV_StartBug> cpi -> ref_frame_flags = VP8_ALTR_FRAME | VP8_GOLD_FRAME | VP8_LAST_FRAME ; <S2SV_EndBug> cm -> refresh_golden_frame = 0 ; cm -> refresh_last_frame = 1 ; cm -> refresh_entropy_probs = 1 ; # if ( CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING ) cpi -> oxcf . token_partitions = 3 ; # endif if ( cpi -> oxcf . token_partitions >= 0 && cpi -> oxcf . token_partitions <= 3 ) cm -> multi_token_partition = ( TOKEN_PARTITION ) cpi -> oxcf . token_partitions ; setup_features ( cpi ) ; { int i ; for ( i = 0 ; i < MAX_MB_SEGMENTS ; i ++ ) cpi -> segment_encode_breakout [ i ] = cpi -> oxcf . encode_breakout ; } if ( cpi -> oxcf . fixed_q > MAXQ ) cpi -> oxcf . fixed_q = MAXQ ; if ( cpi -> oxcf . end_usage == USAGE_LOCAL_FILE_PLAYBACK ) { cpi -> oxcf . starting_buffer_level = 60000 ; cpi -> oxcf . optimal_buffer_level = 60000 ; cpi -> oxcf . maximum_buffer_size = 240000 ; cpi -> oxcf . starting_buffer_level_in_ms = 60000 ; cpi -> oxcf . optimal_buffer_level_in_ms = 60000 ; cpi -> oxcf . maximum_buffer_size_in_ms = 240000 ; } cpi -> oxcf . target_bandwidth *= 1000 ; cpi -> oxcf . starting_buffer_level = rescale ( ( int ) cpi -> oxcf . starting_buffer_level , cpi -> oxcf . target_bandwidth , 1000 ) ; if ( cpi -> oxcf . optimal_buffer_level == 0 ) cpi -> oxcf . optimal_buffer_level = cpi -> oxcf . target_bandwidth / 8 ; else cpi -> oxcf . optimal_buffer_level = rescale ( ( int ) cpi -> oxcf . optimal_buffer_level , cpi -> oxcf . target_bandwidth , 1000 ) ; if ( cpi -> oxcf . maximum_buffer_size == 0 ) cpi -> oxcf . maximum_buffer_size = cpi -> oxcf . target_bandwidth / 8 ; else cpi -> oxcf . maximum_buffer_size = rescale ( ( int ) cpi -> oxcf . maximum_buffer_size , cpi -> oxcf . target_bandwidth , 1000 ) ; if ( cpi -> bits_off_target > cpi -> oxcf . maximum_buffer_size ) { cpi -> bits_off_target = cpi -> oxcf . maximum_buffer_size ; cpi -> buffer_level = cpi -> bits_off_target ; } vp8_new_framerate ( cpi , cpi -> framerate ) ; cpi -> worst_quality = cpi -> oxcf . worst_allowed_q ; cpi -> best_quality = cpi -> oxcf . best_allowed_q ; if ( cpi -> active_worst_quality > cpi -> oxcf . worst_allowed_q ) { cpi -> active_worst_quality = cpi -> oxcf . worst_allowed_q ; } else if ( cpi -> active_worst_quality < cpi -> oxcf . best_allowed_q ) { cpi -> active_worst_quality = cpi -> oxcf . best_allowed_q ; } if ( cpi -> active_best_quality < cpi -> oxcf . best_allowed_q ) { cpi -> active_best_quality = cpi -> oxcf . best_allowed_q ; } else if ( cpi -> active_best_quality > cpi -> oxcf . worst_allowed_q ) { cpi -> active_best_quality = cpi -> oxcf . worst_allowed_q ; } cpi -> buffered_mode = cpi -> oxcf . optimal_buffer_level > 0 ; cpi -> cq_target_quality = cpi -> oxcf . cq_level ; cpi -> drop_frames_allowed = cpi -> oxcf . allow_df && cpi -> buffered_mode ; cpi -> target_bandwidth = cpi -> oxcf . target_bandwidth ; if ( cpi -> oxcf . number_of_layers != prev_number_of_layers ) { <S2SV_StartBug> cpi -> temporal_pattern_counter = 0 ; <S2SV_EndBug> reset_temporal_layer_change ( cpi , oxcf , prev_number_of_layers ) ; } <S2SV_StartBug> cm -> Width = cpi -> oxcf . Width ; <S2SV_EndBug> <S2SV_StartBug> cm -> Height = cpi -> oxcf . Height ; <S2SV_EndBug> if ( cpi -> oxcf . Sharpness > 7 ) cpi -> oxcf . Sharpness = 7 ; cm -> sharpness_level = cpi -> oxcf . Sharpness ; if ( cm -> horiz_scale != NORMAL || cm -> vert_scale != NORMAL ) { int UNINITIALIZED_IS_SAFE ( hr ) , UNINITIALIZED_IS_SAFE ( hs ) ; int UNINITIALIZED_IS_SAFE ( vr ) , UNINITIALIZED_IS_SAFE ( vs ) ; Scale2Ratio ( cm -> horiz_scale , & hr , & hs ) ; Scale2Ratio ( cm -> vert_scale , & vr , & vs ) ; cm -> Width = ( hs - 1 + cpi -> oxcf . Width * hr ) / hs ; cm -> Height = ( vs - 1 + cpi -> oxcf . Height * vr ) / vs ; } if ( last_w != cpi -> oxcf . Width || last_h != cpi -> oxcf . Height ) cpi -> force_next_frame_intra = 1 ; if ( ( ( cm -> Width + 15 ) & 0xfffffff0 ) != cm -> yv12_fb [ cm -> lst_fb_idx ] . y_width || ( ( cm -> Height + 15 ) & 0xfffffff0 ) != cm -> yv12_fb [ cm -> lst_fb_idx ] . y_height || cm -> yv12_fb [ cm -> lst_fb_idx ] . y_width == 0 ) { dealloc_raw_frame_buffers ( cpi ) ; alloc_raw_frame_buffers ( cpi ) ; vp8_alloc_compressor_data ( cpi ) ; } if ( cpi -> oxcf . fixed_q >= 0 ) { cpi -> last_q [ 0 ] = cpi -> oxcf . fixed_q ; cpi -> last_q [ 1 ] = cpi -> oxcf . fixed_q ; } cpi -> Speed = cpi -> oxcf . cpu_used ; if ( cpi -> oxcf . lag_in_frames == 0 ) { cpi -> oxcf . allow_lag = 0 ; } else if ( cpi -> oxcf . lag_in_frames > MAX_LAG_BUFFERS ) cpi -> oxcf . lag_in_frames = MAX_LAG_BUFFERS ; cpi -> alt_ref_source = NULL ; cpi -> is_src_frame_alt_ref = 0 ; # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity ) { if ( ! cpi -> denoiser . yv12_mc_running_avg . buffer_alloc ) { int width = ( cpi -> oxcf . Width + 15 ) & ~ 15 ; int height = ( cpi -> oxcf . Height + 15 ) & ~ 15 ; <S2SV_StartBug> vp8_denoiser_allocate ( & cpi -> denoiser , width , height ) ; <S2SV_EndBug> } } # endif # if 0 cpi -> frame_distortion = 0 ; cpi -> last_frame_distortion = 0 ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : DEFAULT_GF_INTERVAL ; <S2SV_ModEnd> # if ( <S2SV_ModStart> prev_number_of_layers ) { if ( cpi -> temporal_layer_id > 0 ) { cpi -> temporal_layer_id = 0 ; } <S2SV_ModStart> ) ; } if ( ! cpi -> initial_width ) { cpi -> initial_width = cpi -> oxcf . Width ; cpi -> initial_height = cpi -> oxcf . Height ; } cm -> Width = cpi -> oxcf . Width <S2SV_ModEnd> ; cm -> <S2SV_ModStart> oxcf . Height ; assert ( cm -> Width <= cpi -> initial_width ) ; assert ( cm -> Height <= cpi -> initial_height ) <S2SV_ModStart> width , height , cm -> mb_rows , cm -> mb_cols , cpi -> oxcf . noise_sensitivity\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 static int kvm_set_guest_paused ( struct kvm_vcpu * vcpu ) { <S2SV_StartBug> if ( ! vcpu -> arch . time_page ) <S2SV_EndBug> return - EINVAL ; vcpu -> arch . pvclock_set_guest_stopped_request = true ; kvm_make_request ( KVM_REQ_CLOCK_UPDATE , vcpu ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> arch . pv_time_enabled <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14039\n\n```\nCWE-787 static OPJ_BOOL opj_t2_encode_packet ( OPJ_UINT32 tileno , opj_tcd_tile_t * tile , opj_tcp_t * tcp , opj_pi_iterator_t * pi , OPJ_BYTE * dest , OPJ_UINT32 * p_data_written , OPJ_UINT32 length , opj_codestream_info_t * cstr_info , J2K_T2_MODE p_t2_mode , opj_event_mgr_t * p_manager ) { OPJ_UINT32 bandno , cblkno ; OPJ_BYTE * c = dest ; OPJ_UINT32 l_nb_bytes ; OPJ_UINT32 compno = pi -> compno ; OPJ_UINT32 resno = pi -> resno ; OPJ_UINT32 precno = pi -> precno ; OPJ_UINT32 layno = pi -> layno ; OPJ_UINT32 l_nb_blocks ; opj_tcd_band_t * band = 00 ; opj_tcd_cblk_enc_t * cblk = 00 ; opj_tcd_pass_t * pass = 00 ; opj_tcd_tilecomp_t * tilec = & tile -> comps [ compno ] ; opj_tcd_resolution_t * res = & tilec -> resolutions [ resno ] ; opj_bio_t * bio = 00 ; OPJ_BOOL packet_empty = OPJ_TRUE ; <S2SV_StartBug> if ( tcp -> csty & J2K_CP_CSTY_SOP ) { <S2SV_EndBug> c [ 0 ] = 255 ; c [ 1 ] = 145 ; c [ 2 ] = 0 ; c [ 3 ] = 4 ; # if 0 c [ 4 ] = ( tile -> packno % 65536 ) / 256 ; c [ 5 ] = ( tile -> packno % 65536 ) % 256 ; # else c [ 4 ] = ( tile -> packno >> 8 ) & 0xff ; c [ 5 ] = tile -> packno & 0xff ; # endif c += 6 ; length -= 6 ; } if ( ! layno ) { band = res -> bands ; for ( bandno = 0 ; bandno < res -> numbands ; ++ bandno , ++ band ) { opj_tcd_precinct_t * prc ; if ( opj_tcd_is_band_empty ( band ) ) { continue ; } prc = & band -> precincts [ precno ] ; opj_tgt_reset ( prc -> incltree ) ; opj_tgt_reset ( prc -> imsbtree ) ; l_nb_blocks = prc -> cw * prc -> ch ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; ++ cblkno ) { cblk = & prc -> cblks . enc [ cblkno ] ; cblk -> numpasses = 0 ; opj_tgt_setvalue ( prc -> imsbtree , cblkno , band -> numbps - ( OPJ_INT32 ) cblk -> numbps ) ; } } } bio = opj_bio_create ( ) ; if ( ! bio ) { return OPJ_FALSE ; } opj_bio_init_enc ( bio , c , length ) ; band = res -> bands ; for ( bandno = 0 ; bandno < res -> numbands ; ++ bandno , ++ band ) { opj_tcd_precinct_t * prc ; if ( opj_tcd_is_band_empty ( band ) ) { continue ; } prc = & band -> precincts [ precno ] ; l_nb_blocks = prc -> cw * prc -> ch ; cblk = prc -> cblks . enc ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; cblkno ++ , ++ cblk ) { opj_tcd_layer_t * layer = & cblk -> layers [ layno ] ; if ( ! layer -> numpasses ) { continue ; } packet_empty = OPJ_FALSE ; break ; } if ( ! packet_empty ) { break ; } } opj_bio_write ( bio , packet_empty ? 0 : 1 , 1 ) ; band = res -> bands ; for ( bandno = 0 ; ! packet_empty && bandno < res -> numbands ; ++ bandno , ++ band ) { opj_tcd_precinct_t * prc ; if ( opj_tcd_is_band_empty ( band ) ) { continue ; } prc = & band -> precincts [ precno ] ; l_nb_blocks = prc -> cw * prc -> ch ; cblk = prc -> cblks . enc ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; ++ cblkno ) { opj_tcd_layer_t * layer = & cblk -> layers [ layno ] ; if ( ! cblk -> numpasses && layer -> numpasses ) { opj_tgt_setvalue ( prc -> incltree , cblkno , ( OPJ_INT32 ) layno ) ; } ++ cblk ; } cblk = prc -> cblks . enc ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; cblkno ++ ) { opj_tcd_layer_t * layer = & cblk -> layers [ layno ] ; OPJ_UINT32 increment = 0 ; OPJ_UINT32 nump = 0 ; OPJ_UINT32 len = 0 , passno ; OPJ_UINT32 l_nb_passes ; if ( ! cblk -> numpasses ) { opj_tgt_encode ( bio , prc -> incltree , cblkno , ( OPJ_INT32 ) ( layno + 1 ) ) ; } else { opj_bio_write ( bio , layer -> numpasses != 0 , 1 ) ; } if ( ! layer -> numpasses ) { ++ cblk ; continue ; } if ( ! cblk -> numpasses ) { cblk -> numlenbits = 3 ; opj_tgt_encode ( bio , prc -> imsbtree , cblkno , 999 ) ; } opj_t2_putnumpasses ( bio , layer -> numpasses ) ; l_nb_passes = cblk -> numpasses + layer -> numpasses ; pass = cblk -> passes + cblk -> numpasses ; for ( passno = cblk -> numpasses ; passno < l_nb_passes ; ++ passno ) { ++ nump ; len += pass -> len ; if ( pass -> term || passno == ( cblk -> numpasses + layer -> numpasses ) - 1 ) { increment = ( OPJ_UINT32 ) opj_int_max ( ( OPJ_INT32 ) increment , opj_int_floorlog2 ( ( OPJ_INT32 ) len ) + 1 - ( ( OPJ_INT32 ) cblk -> numlenbits + opj_int_floorlog2 ( ( OPJ_INT32 ) nump ) ) ) ; len = 0 ; nump = 0 ; } ++ pass ; } opj_t2_putcommacode ( bio , ( OPJ_INT32 ) increment ) ; cblk -> numlenbits += increment ; pass = cblk -> passes + cblk -> numpasses ; for ( passno = cblk -> numpasses ; passno < l_nb_passes ; ++ passno ) { nump ++ ; len += pass -> len ; if ( pass -> term || passno == ( cblk -> numpasses + layer -> numpasses ) - 1 ) { opj_bio_write ( bio , ( OPJ_UINT32 ) len , cblk -> numlenbits + ( OPJ_UINT32 ) opj_int_floorlog2 ( ( OPJ_INT32 ) nump ) ) ; len = 0 ; nump = 0 ; } ++ pass ; } ++ cblk ; } } if ( ! opj_bio_flush ( bio ) ) { opj_bio_destroy ( bio ) ; return OPJ_FALSE ; } l_nb_bytes = ( OPJ_UINT32 ) opj_bio_numbytes ( bio ) ; c += l_nb_bytes ; length -= l_nb_bytes ; opj_bio_destroy ( bio ) ; <S2SV_StartBug> if ( tcp -> csty & J2K_CP_CSTY_EPH ) { <S2SV_EndBug> c [ 0 ] = 255 ; c [ 1 ] = 146 ; c += 2 ; length -= 2 ; } if ( cstr_info && cstr_info -> index_write ) { opj_packet_info_t * info_PK = & cstr_info -> tile [ tileno ] . packet [ cstr_info -> packno ] ; info_PK -> end_ph_pos = ( OPJ_INT32 ) ( c - dest ) ; } band = res -> bands ; for ( bandno = 0 ; ! packet_empty && bandno < res -> numbands ; bandno ++ , ++ band ) { opj_tcd_precinct_t * prc ; if ( opj_tcd_is_band_empty ( band ) ) { continue ; } prc = & band -> precincts [ precno ] ; l_nb_blocks = prc -> cw * prc -> ch ; cblk = prc -> cblks . enc ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; ++ cblkno ) { opj_tcd_layer_t * layer = & cblk -> layers [ layno ] ; if ( ! layer -> numpasses ) { ++ cblk ; continue ; } if ( layer -> len > length ) { if ( p_t2_mode == FINAL_PASS ) { opj_event_msg ( p_manager , EVT_ERROR , \"opj_t2_encode_packet():<S2SV_blank>only<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>in<S2SV_blank>\" \"output<S2SV_blank>buffer.<S2SV_blank>%u<S2SV_blank>needed.\\\\n\" , length , layer -> len ) ; } return OPJ_FALSE ; } memcpy ( c , layer -> data , layer -> len ) ; cblk -> numpasses += layer -> numpasses ; c += layer -> len ; length -= layer -> len ; if ( cstr_info && cstr_info -> index_write ) { opj_packet_info_t * info_PK = & cstr_info -> tile [ tileno ] . packet [ cstr_info -> packno ] ; info_PK -> disto += layer -> disto ; if ( cstr_info -> D_max < info_PK -> disto ) { cstr_info -> D_max = info_PK -> disto ; } } ++ cblk ; } } assert ( c >= dest ) ; * p_data_written += ( OPJ_UINT32 ) ( c - dest ) ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> J2K_CP_CSTY_SOP ) { if ( length < 6 ) { if ( p_t2_mode == FINAL_PASS ) { opj_event_msg ( p_manager , EVT_ERROR , \"opj_t2_encode_packet():<S2SV_blank>only<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>in<S2SV_blank>\" \"output<S2SV_blank>buffer.<S2SV_blank>%u<S2SV_blank>needed.\\\\n\" , length , 6 ) ; } return OPJ_FALSE ; } <S2SV_ModStart> J2K_CP_CSTY_EPH ) { if ( length < 2 ) { if ( p_t2_mode == FINAL_PASS ) { opj_event_msg ( p_manager , EVT_ERROR , \"opj_t2_encode_packet():<S2SV_blank>only<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>in<S2SV_blank>\" \"output<S2SV_blank>buffer.<S2SV_blank>%u<S2SV_blank>needed.\\\\n\" , length , 2 ) ; } return OPJ_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5601\n\n```\nCWE-125 static int lha_read_file_header_1 ( struct archive_read * a , struct lha * lha ) { const unsigned char * p ; size_t extdsize ; int i , err , err2 ; int namelen , padding ; unsigned char headersum , sum_calculated ; err = ARCHIVE_OK ; if ( ( p = __archive_read_ahead ( a , H1_FIXED_SIZE , NULL ) ) == NULL ) return ( truncated_error ( a ) ) ; lha -> header_size = p [ H1_HEADER_SIZE_OFFSET ] + 2 ; headersum = p [ H1_HEADER_SUM_OFFSET ] ; lha -> compsize = archive_le32dec ( p + H1_COMP_SIZE_OFFSET ) ; lha -> origsize = archive_le32dec ( p + H1_ORIG_SIZE_OFFSET ) ; lha -> mtime = lha_dos_time ( p + H1_DOS_TIME_OFFSET ) ; namelen = p [ H1_NAME_LEN_OFFSET ] ; padding = ( ( int ) lha -> header_size ) - H1_FIXED_SIZE - namelen ; if ( namelen > 230 || padding < 0 ) goto invalid ; if ( ( p = __archive_read_ahead ( a , lha -> header_size , NULL ) ) == NULL ) return ( truncated_error ( a ) ) ; for ( i = 0 ; i < namelen ; i ++ ) { if ( p [ i + H1_FILE_NAME_OFFSET ] == 0xff ) goto invalid ; } archive_strncpy ( & lha -> filename , p + H1_FILE_NAME_OFFSET , namelen ) ; lha -> crc = archive_le16dec ( p + H1_FILE_NAME_OFFSET + namelen ) ; lha -> setflag |= CRC_IS_SET ; sum_calculated = lha_calcsum ( 0 , p , 2 , lha -> header_size - 2 ) ; __archive_read_consume ( a , lha -> header_size - 2 ) ; err2 = lha_read_file_extended_header ( a , lha , NULL , 2 , ( size_t ) ( lha -> compsize + 2 ) , & extdsize ) ; if ( err2 < ARCHIVE_WARN ) return ( err2 ) ; if ( err2 < err ) err = err2 ; lha -> compsize -= extdsize - 2 ; <S2SV_StartBug> if ( sum_calculated != headersum ) { <S2SV_EndBug> archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"LHa<S2SV_blank>header<S2SV_blank>sum<S2SV_blank>error\" ) ; return ( ARCHIVE_FATAL ) ; } return ( err ) ; invalid : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>LHa<S2SV_blank>header\" ) ; return ( ARCHIVE_FATAL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lha -> compsize < 0 ) goto invalid ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-5235\n\n```\nCWE-125 static bool checkreturn decode_pointer_field ( pb_istream_t * stream , pb_wire_type_t wire_type , pb_field_iter_t * field ) { # ifndef PB_ENABLE_MALLOC PB_UNUSED ( wire_type ) ; PB_UNUSED ( field ) ; PB_RETURN_ERROR ( stream , \"no<S2SV_blank>malloc<S2SV_blank>support\" ) ; # else switch ( PB_HTYPE ( field -> type ) ) { case PB_HTYPE_REQUIRED : case PB_HTYPE_OPTIONAL : case PB_HTYPE_ONEOF : if ( ! check_wire_type ( wire_type , field ) ) PB_RETURN_ERROR ( stream , \"wrong<S2SV_blank>wire<S2SV_blank>type\" ) ; if ( PB_LTYPE_IS_SUBMSG ( field -> type ) && * ( void * * ) field -> pField != NULL ) { pb_release_single_field ( field ) ; } if ( PB_HTYPE ( field -> type ) == PB_HTYPE_ONEOF ) { * ( pb_size_t * ) field -> pSize = field -> tag ; } if ( PB_LTYPE ( field -> type ) == PB_LTYPE_STRING || PB_LTYPE ( field -> type ) == PB_LTYPE_BYTES ) { field -> pData = field -> pField ; return decode_basic_field ( stream , field ) ; } else { if ( ! allocate_field ( stream , field -> pField , field -> data_size , 1 ) ) return false ; field -> pData = * ( void * * ) field -> pField ; initialize_pointer_field ( field -> pData , field ) ; return decode_basic_field ( stream , field ) ; } case PB_HTYPE_REPEATED : if ( wire_type == PB_WT_STRING && PB_LTYPE ( field -> type ) <= PB_LTYPE_LAST_PACKABLE ) { bool status = true ; pb_size_t * size = ( pb_size_t * ) field -> pSize ; size_t allocated_size = * size ; pb_istream_t substream ; if ( ! pb_make_string_substream ( stream , & substream ) ) return false ; while ( substream . bytes_left ) { if ( ( size_t ) * size + 1 > allocated_size ) { allocated_size += ( substream . bytes_left - 1 ) / field -> data_size + 1 ; if ( ! allocate_field ( & substream , field -> pField , field -> data_size , allocated_size ) ) { status = false ; break ; } } field -> pData = * ( char * * ) field -> pField + field -> data_size * ( * size ) ; initialize_pointer_field ( field -> pData , field ) ; if ( ! decode_basic_field ( & substream , field ) ) { status = false ; break ; } if ( * size == PB_SIZE_MAX ) { # ifndef PB_NO_ERRMSG stream -> errmsg = \"too<S2SV_blank>many<S2SV_blank>array<S2SV_blank>entries\" ; # endif status = false ; break ; } ( * size ) ++ ; } if ( ! pb_close_string_substream ( stream , & substream ) ) return false ; return status ; } else { pb_size_t * size = ( pb_size_t * ) field -> pSize ; if ( * size == PB_SIZE_MAX ) PB_RETURN_ERROR ( stream , \"too<S2SV_blank>many<S2SV_blank>array<S2SV_blank>entries\" ) ; if ( ! check_wire_type ( wire_type , field ) ) PB_RETURN_ERROR ( stream , \"wrong<S2SV_blank>wire<S2SV_blank>type\" ) ; <S2SV_StartBug> ( * size ) ++ ; <S2SV_EndBug> if ( ! allocate_field ( stream , field -> pField , field -> data_size , * size ) ) return false ; field -> pData = * ( char * * ) field -> pField + field -> data_size * ( * size - 1 ) ; initialize_pointer_field ( field -> pData , field ) ; return decode_basic_field ( stream , field ) ; } default : PB_RETURN_ERROR ( stream , \"invalid<S2SV_blank>field<S2SV_blank>type\" ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"wrong<S2SV_blank>wire<S2SV_blank>type\" ) ; if ( ! allocate_field ( stream , field -> pField , field -> data_size , ( size_t ) ( * size + 1 ) ) ) return false ; field -> pData = * ( char * * ) field -> pField + field -> data_size * ( * size ) ; <S2SV_ModStart> size ) ++ <S2SV_ModEnd> ; initialize_pointer_field (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0196\n\n```\nCWE-362 static ssize_t n_tty_write ( struct tty_struct * tty , struct file * file , const unsigned char * buf , size_t nr ) { const unsigned char * b = buf ; DECLARE_WAITQUEUE ( wait , current ) ; int c ; ssize_t retval = 0 ; if ( L_TOSTOP ( tty ) && file -> f_op -> write != redirected_tty_write ) { retval = tty_check_change ( tty ) ; if ( retval ) return retval ; } down_read ( & tty -> termios_rwsem ) ; process_echoes ( tty ) ; add_wait_queue ( & tty -> write_wait , & wait ) ; while ( 1 ) { set_current_state ( TASK_INTERRUPTIBLE ) ; if ( signal_pending ( current ) ) { retval = - ERESTARTSYS ; break ; } if ( tty_hung_up_p ( file ) || ( tty -> link && ! tty -> link -> count ) ) { retval = - EIO ; break ; } if ( O_OPOST ( tty ) ) { while ( nr > 0 ) { ssize_t num = process_output_block ( tty , b , nr ) ; if ( num < 0 ) { if ( num == - EAGAIN ) break ; retval = num ; goto break_out ; } b += num ; nr -= num ; if ( nr == 0 ) break ; c = * b ; if ( process_output ( c , tty ) < 0 ) break ; b ++ ; nr -- ; } if ( tty -> ops -> flush_chars ) tty -> ops -> flush_chars ( tty ) ; } else { <S2SV_StartBug> while ( nr > 0 ) { <S2SV_EndBug> <S2SV_StartBug> c = tty -> ops -> write ( tty , b , nr ) ; <S2SV_EndBug> if ( c < 0 ) { retval = c ; goto break_out ; } if ( ! c ) break ; b += c ; nr -= c ; } } if ( ! nr ) break ; if ( file -> f_flags & O_NONBLOCK ) { retval = - EAGAIN ; break ; } up_read ( & tty -> termios_rwsem ) ; schedule ( ) ; down_read ( & tty -> termios_rwsem ) ; } break_out : __set_current_state ( TASK_RUNNING ) ; remove_wait_queue ( & tty -> write_wait , & wait ) ; if ( b - buf != nr && tty -> fasync ) set_bit ( TTY_DO_WRITE_WAKEUP , & tty -> flags ) ; up_read ( & tty -> termios_rwsem ) ; return ( b - buf ) ? b - buf : retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { struct n_tty_data * ldata = tty -> disc_data ; <S2SV_ModStart> 0 ) { mutex_lock ( & ldata -> output_lock ) ; <S2SV_ModStart> b , nr ) ; mutex_unlock ( & ldata -> output_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3225\n\n```\nCWE-200 static int rfcomm_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct rfcomm_dlc * d = rfcomm_pi ( sk ) -> dlc ; int len ; if ( test_and_clear_bit ( RFCOMM_DEFER_SETUP , & d -> flags ) ) { <S2SV_StartBug> rfcomm_dlc_accept ( d ) ; <S2SV_EndBug> return 0 ; } len = bt_sock_stream_recvmsg ( iocb , sock , msg , size , flags ) ; lock_sock ( sk ) ; if ( ! ( flags & MSG_PEEK ) && len > 0 ) atomic_sub ( len , & sk -> sk_rmem_alloc ) ; if ( atomic_read ( & sk -> sk_rmem_alloc ) <= ( sk -> sk_rcvbuf >> 2 ) ) rfcomm_dlc_unthrottle ( rfcomm_pi ( sk ) -> dlc ) ; release_sock ( sk ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( d ) ; msg -> msg_namelen = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_update_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { int update = va_arg ( args , int ) ; vp8_update_reference ( ctx -> cpi , update ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14815\n\n```\nCWE-787 void mwifiex_set_wmm_params ( struct mwifiex_private * priv , struct mwifiex_uap_bss_param * bss_cfg , struct cfg80211_ap_settings * params ) { const u8 * vendor_ie ; const u8 * wmm_ie ; u8 wmm_oui [ ] = { 0x00 , 0x50 , 0xf2 , 0x02 } ; vendor_ie = cfg80211_find_vendor_ie ( WLAN_OUI_MICROSOFT , WLAN_OUI_TYPE_MICROSOFT_WMM , params -> beacon . tail , params -> beacon . tail_len ) ; if ( vendor_ie ) { wmm_ie = vendor_ie ; <S2SV_StartBug> memcpy ( & bss_cfg -> wmm_info , wmm_ie + <S2SV_EndBug> <S2SV_StartBug> sizeof ( struct ieee_types_header ) , * ( wmm_ie + 1 ) ) ; <S2SV_EndBug> priv -> wmm_enabled = 1 ; } else { memset ( & bss_cfg -> wmm_info , 0 , sizeof ( bss_cfg -> wmm_info ) ) ; memcpy ( & bss_cfg -> wmm_info . oui , wmm_oui , sizeof ( wmm_oui ) ) ; bss_cfg -> wmm_info . subtype = MWIFIEX_WMM_SUBTYPE ; bss_cfg -> wmm_info . version = MWIFIEX_WMM_VERSION ; priv -> wmm_enabled = 0 ; } bss_cfg -> qos_info = 0x00 ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = vendor_ie ; if ( <S2SV_ModEnd> * ( wmm_ie <S2SV_ModStart> + 1 ) > sizeof ( struct mwifiex_types_wmm_info ) ) return ; memcpy ( & bss_cfg -> wmm_info , wmm_ie + sizeof ( struct ieee_types_header ) , * ( wmm_ie + 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 void vrrp_print_data ( void ) { <S2SV_StartBug> FILE * file = fopen ( dump_file , \"w\" ) ; <S2SV_EndBug> if ( ! file ) { log_message ( LOG_INFO , \"Can\\'t<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>(%d:<S2SV_blank>%s)\" , dump_file , errno , strerror ( errno ) ) ; return ; } dump_data_vrrp ( file ) ; fclose ( file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * file = fopen_safe <S2SV_ModEnd> ( dump_file ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfsd_mountpoint ( struct dentry * dentry , struct svc_export * exp ) { <S2SV_StartBug> if ( d_mountpoint ( dentry ) ) <S2SV_EndBug> return 1 ; if ( nfsd4_is_junction ( dentry ) ) return 1 ; <S2SV_StartBug> if ( ! ( exp -> ex_flags & NFSEXP_V4ROOT ) ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> return d_inode ( dentry ) != NULL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ! d_inode <S2SV_ModEnd> ( dentry ) <S2SV_ModStart> ( dentry ) ) return 0 ; if ( exp -> ex_flags & NFSEXP_V4ROOT <S2SV_ModStart> ; if ( d_mountpoint ( dentry ) ) return 2 ; <S2SV_ModEnd> return 0 ; <S2SV_ModStart> return 0 ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-310 static VALUE ossl_cipher_update ( int argc , VALUE * argv , VALUE self ) { EVP_CIPHER_CTX * ctx ; unsigned char * in ; long in_len , out_len ; VALUE data , str ; rb_scan_args ( argc , argv , \"11\" , & data , & str ) ; <S2SV_StartBug> StringValue ( data ) ; <S2SV_EndBug> in = ( unsigned char * ) RSTRING_PTR ( data ) ; if ( ( in_len = RSTRING_LEN ( data ) ) == 0 ) ossl_raise ( rb_eArgError , \"data<S2SV_blank>must<S2SV_blank>not<S2SV_blank>be<S2SV_blank>empty\" ) ; GetCipher ( self , ctx ) ; out_len = in_len + EVP_CIPHER_CTX_block_size ( ctx ) ; if ( out_len <= 0 ) { ossl_raise ( rb_eRangeError , \"data<S2SV_blank>too<S2SV_blank>big<S2SV_blank>to<S2SV_blank>make<S2SV_blank>output<S2SV_blank>buffer:<S2SV_blank>%ld<S2SV_blank>bytes\" , in_len ) ; } if ( NIL_P ( str ) ) { str = rb_str_new ( 0 , out_len ) ; } else { StringValue ( str ) ; rb_str_resize ( str , out_len ) ; } if ( ! ossl_cipher_update_long ( ctx , ( unsigned char * ) RSTRING_PTR ( str ) , & out_len , in , in_len ) ) ossl_raise ( eCipherError , NULL ) ; assert ( out_len < RSTRING_LEN ( str ) ) ; rb_str_set_len ( str , out_len ) ; return str ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> str ) ; if ( ! RTEST ( rb_attr_get ( self , id_key_set ) ) ) ossl_raise ( eCipherError , \"key<S2SV_blank>not<S2SV_blank>set\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t httpClientSetUri ( HttpClientContext * context , const char_t * uri ) { size_t m ; size_t n ; char_t * p ; char_t * q ; if ( context == NULL || uri == NULL ) return ERROR_INVALID_PARAMETER ; if ( uri [ 0 ] == '\\\\0' ) return ERROR_INVALID_PARAMETER ; if ( context -> requestState != HTTP_REQ_STATE_FORMAT_HEADER ) return ERROR_WRONG_STATE ; if ( context -> bufferLen > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_INVALID_SYNTAX ; context -> buffer [ context -> bufferLen ] = '\\\\0' ; <S2SV_StartBug> p = strchr ( context -> buffer , '<S2SV_blank>' ) ; <S2SV_EndBug> if ( p == NULL ) return ERROR_INVALID_SYNTAX ; p ++ ; q = strpbrk ( p , \"<S2SV_blank>?\" ) ; if ( q == NULL ) return ERROR_INVALID_SYNTAX ; m = q - p ; n = osStrlen ( uri ) ; if ( ( context -> bufferLen + n - m ) > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_BUFFER_OVERFLOW ; osMemmove ( p + n , q , context -> buffer + context -> bufferLen + 1 - q ) ; osStrncpy ( p , uri , n ) ; context -> bufferLen = context -> bufferLen + n - m ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; p = osStrchr <S2SV_ModEnd> ( context ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5355\n\n```\nCWE-20 static gboolean parse_toshiba_packet ( FILE_T fh , struct wtap_pkthdr * phdr , Buffer * buf , int * err , gchar * * err_info ) { union wtap_pseudo_header * pseudo_header = & phdr -> pseudo_header ; char line [ TOSHIBA_LINE_LENGTH ] ; int num_items_scanned ; <S2SV_StartBug> int pkt_len , pktnum , hr , min , sec , csec ; <S2SV_EndBug> char channel [ 10 ] , direction [ 10 ] ; int i , hex_lines ; guint8 * pd ; if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } num_items_scanned = sscanf ( line , \"%9d]<S2SV_blank>%2d:%2d:%2d.%9d<S2SV_blank>%9s<S2SV_blank>%9s\" , & pktnum , & hr , & min , & sec , & csec , channel , direction ) ; if ( num_items_scanned != 7 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>record<S2SV_blank>header<S2SV_blank>isn\\'t<S2SV_blank>valid\" ) ; return FALSE ; } do { if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } line [ 16 ] = '\\\\0' ; } while ( strcmp ( line , \"OFFSET<S2SV_blank>0001-0203\" ) != 0 ) ; <S2SV_StartBug> num_items_scanned = sscanf ( line + 64 , \"LEN=%9d\" , & pkt_len ) ; <S2SV_EndBug> if ( num_items_scanned != 1 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>OFFSET<S2SV_blank>line<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>valid<S2SV_blank>LEN<S2SV_blank>item\" ) ; return FALSE ; } <S2SV_StartBug> phdr -> rec_type = REC_TYPE_PACKET ; <S2SV_EndBug> phdr -> presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN ; phdr -> ts . secs = hr * 3600 + min * 60 + sec ; phdr -> ts . nsecs = csec * 10000000 ; phdr -> caplen = pkt_len ; phdr -> len = pkt_len ; switch ( channel [ 0 ] ) { case 'B' : phdr -> pkt_encap = WTAP_ENCAP_ISDN ; pseudo_header -> isdn . uton = ( direction [ 0 ] == 'T' ) ; pseudo_header -> isdn . channel = ( guint8 ) strtol ( & channel [ 1 ] , NULL , 10 ) ; break ; case 'D' : phdr -> pkt_encap = WTAP_ENCAP_ISDN ; pseudo_header -> isdn . uton = ( direction [ 0 ] == 'T' ) ; pseudo_header -> isdn . channel = 0 ; break ; default : phdr -> pkt_encap = WTAP_ENCAP_ETHERNET ; pseudo_header -> eth . fcs_len = - 1 ; break ; } <S2SV_StartBug> ws_buffer_assure_space ( buf , TOSHIBA_MAX_PACKET_LEN ) ; <S2SV_EndBug> pd = ws_buffer_start_ptr ( buf ) ; hex_lines = pkt_len / 16 + ( ( pkt_len % 16 ) ? 1 : 0 ) ; for ( i = 0 ; i < hex_lines ; i ++ ) { if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } if ( ! parse_single_hex_dump_line ( line , pd , i * 16 ) ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>hex<S2SV_blank>dump<S2SV_blank>not<S2SV_blank>valid\" ) ; return FALSE ; } } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int num_items_scanned ; guint pkt_len ; int <S2SV_ModEnd> pktnum , hr <S2SV_ModStart> + 64 , \"LEN=%9u\" <S2SV_ModEnd> , & pkt_len <S2SV_ModStart> FALSE ; } if ( pkt_len > WTAP_MAX_PACKET_SIZE ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup_printf ( \"toshiba:<S2SV_blank>File<S2SV_blank>has<S2SV_blank>%u-byte<S2SV_blank>packet,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>maximum<S2SV_blank>of<S2SV_blank>%u\" , pkt_len , WTAP_MAX_PACKET_SIZE ) ; return FALSE ; } <S2SV_ModStart> ( buf , pkt_len <S2SV_ModEnd> ) ; pd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int llc_ui_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sockaddr_llc * uaddr = ( struct sockaddr_llc * ) msg -> msg_name ; const int nonblock = flags & MSG_DONTWAIT ; struct sk_buff * skb = NULL ; struct sock * sk = sock -> sk ; struct llc_sock * llc = llc_sk ( sk ) ; unsigned long cpu_flags ; size_t copied = 0 ; u32 peek_seq = 0 ; u32 * seq ; unsigned long used ; int target ; <S2SV_StartBug> long timeo ; <S2SV_EndBug> msg -> msg_namelen = 0 ; lock_sock ( sk ) ; copied = - ENOTCONN ; if ( unlikely ( sk -> sk_type == SOCK_STREAM && sk -> sk_state == TCP_LISTEN ) ) goto out ; timeo = sock_rcvtimeo ( sk , nonblock ) ; seq = & llc -> copied_seq ; if ( flags & MSG_PEEK ) { peek_seq = llc -> copied_seq ; seq = & peek_seq ; } target = sock_rcvlowat ( sk , flags & MSG_WAITALL , len ) ; copied = 0 ; do { u32 offset ; if ( signal_pending ( current ) ) { if ( copied ) break ; copied = timeo ? sock_intr_errno ( timeo ) : - EAGAIN ; break ; } skb = skb_peek ( & sk -> sk_receive_queue ) ; if ( skb ) { offset = * seq ; goto found_ok_skb ; } if ( copied >= target && ! sk -> sk_backlog . tail ) break ; if ( copied ) { if ( sk -> sk_err || sk -> sk_state == TCP_CLOSE || ( sk -> sk_shutdown & RCV_SHUTDOWN ) || ! timeo || ( flags & MSG_PEEK ) ) break ; } else { if ( sock_flag ( sk , SOCK_DONE ) ) break ; if ( sk -> sk_err ) { copied = sock_error ( sk ) ; break ; } if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; if ( sk -> sk_type == SOCK_STREAM && sk -> sk_state == TCP_CLOSE ) { if ( ! sock_flag ( sk , SOCK_DONE ) ) { copied = - ENOTCONN ; break ; } break ; } if ( ! timeo ) { copied = - EAGAIN ; break ; } } if ( copied >= target ) { release_sock ( sk ) ; lock_sock ( sk ) ; } else sk_wait_data ( sk , & timeo ) ; if ( ( flags & MSG_PEEK ) && peek_seq != llc -> copied_seq ) { net_dbg_ratelimited ( \"LLC(%s:%d):<S2SV_blank>Application<S2SV_blank>bug,<S2SV_blank>race<S2SV_blank>in<S2SV_blank>MSG_PEEK\\\\n\" , current -> comm , task_pid_nr ( current ) ) ; peek_seq = llc -> copied_seq ; } continue ; found_ok_skb : used = skb -> len - offset ; if ( len < used ) used = len ; if ( ! ( flags & MSG_TRUNC ) ) { int rc = skb_copy_datagram_iovec ( skb , offset , msg -> msg_iov , used ) ; if ( rc ) { if ( ! copied ) copied = - EFAULT ; break ; } } * seq += used ; copied += used ; len -= used ; if ( sk -> sk_type != SOCK_STREAM ) goto copy_uaddr ; if ( ! ( flags & MSG_PEEK ) ) { spin_lock_irqsave ( & sk -> sk_receive_queue . lock , cpu_flags ) ; sk_eat_skb ( sk , skb , false ) ; spin_unlock_irqrestore ( & sk -> sk_receive_queue . lock , cpu_flags ) ; * seq = 0 ; } if ( used + offset < skb -> len ) continue ; } while ( len > 0 ) ; out : release_sock ( sk ) ; return copied ; copy_uaddr : if ( uaddr != NULL && skb != NULL ) { memcpy ( uaddr , llc_ui_skb_cb ( skb ) , sizeof ( * uaddr ) ) ; msg -> msg_namelen = sizeof ( * uaddr ) ; } if ( llc_sk ( sk ) -> cmsg_flags ) llc_cmsg_rcv ( msg , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { spin_lock_irqsave ( & sk -> sk_receive_queue . lock , cpu_flags ) ; sk_eat_skb ( sk , skb , false ) ; spin_unlock_irqrestore ( & sk -> sk_receive_queue . lock , cpu_flags ) ; * seq = 0 ; } goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; long timeo <S2SV_ModEnd> ; lock_sock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 static int vdbePmaReadBlob ( PmaReader * p , int nByte , u8 * * ppOut ) { int iBuf ; int nAvail ; if ( p -> aMap ) { * ppOut = & p -> aMap [ p -> iReadOff ] ; p -> iReadOff += nByte ; return SQLITE_OK ; } assert ( p -> aBuffer ) ; iBuf = p -> iReadOff % p -> nBuffer ; if ( iBuf == 0 ) { int nRead ; int rc ; if ( ( p -> iEof - p -> iReadOff ) > ( i64 ) p -> nBuffer ) { nRead = p -> nBuffer ; } else { nRead = ( int ) ( p -> iEof - p -> iReadOff ) ; } assert ( nRead > 0 ) ; rc = sqlite3OsRead ( p -> pFd , p -> aBuffer , nRead , p -> iReadOff ) ; assert ( rc != SQLITE_IOERR_SHORT_READ ) ; if ( rc != SQLITE_OK ) return rc ; } nAvail = p -> nBuffer - iBuf ; if ( nByte <= nAvail ) { * ppOut = & p -> aBuffer [ iBuf ] ; p -> iReadOff += nByte ; } else { int nRem ; if ( p -> nAlloc < nByte ) { u8 * aNew ; <S2SV_StartBug> int nNew = MAX ( 128 , p -> nAlloc * 2 ) ; <S2SV_EndBug> while ( nByte > nNew ) nNew = nNew * 2 ; aNew = sqlite3Realloc ( p -> aAlloc , nNew ) ; if ( ! aNew ) return SQLITE_NOMEM_BKPT ; p -> nAlloc = nNew ; p -> aAlloc = aNew ; } memcpy ( p -> aAlloc , & p -> aBuffer [ iBuf ] , nAvail ) ; p -> iReadOff += nAvail ; nRem = nByte - nAvail ; while ( nRem > 0 ) { int rc ; int nCopy ; u8 * aNext ; nCopy = nRem ; if ( nRem > p -> nBuffer ) nCopy = p -> nBuffer ; rc = vdbePmaReadBlob ( p , nCopy , & aNext ) ; if ( rc != SQLITE_OK ) return rc ; assert ( aNext != p -> aAlloc ) ; memcpy ( & p -> aAlloc [ nByte - nRem ] , aNext , nCopy ) ; nRem -= nCopy ; } * ppOut = p -> aAlloc ; } return SQLITE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * aNew ; sqlite3_int64 <S2SV_ModEnd> nNew = MAX <S2SV_ModStart> ( 128 , 2 * ( sqlite3_int64 ) <S2SV_ModStart> p -> nAlloc <S2SV_ModEnd> ) ; while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_iht16x16_add ( TX_TYPE tx_type , const int16_t * input , uint8_t * dest , <S2SV_EndBug> int stride , int eob ) { if ( tx_type == DCT_DCT ) { vp9_idct16x16_add ( input , dest , stride , eob ) ; } else { vp9_iht16x16_256_add ( input , dest , stride , tx_type ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tx_type , const tran_low_t <S2SV_ModEnd> * input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1819\n\n```\nCWE-20 xfs_buf_t * _xfs_buf_find ( struct xfs_buftarg * btp , struct xfs_buf_map * map , int nmaps , xfs_buf_flags_t flags , xfs_buf_t * new_bp ) { size_t numbytes ; struct xfs_perag * pag ; struct rb_node * * rbp ; struct rb_node * parent ; xfs_buf_t * bp ; <S2SV_StartBug> xfs_daddr_t blkno = map [ 0 ] . bm_bn ; <S2SV_EndBug> int numblks = 0 ; int i ; for ( i = 0 ; i < nmaps ; i ++ ) numblks += map [ i ] . bm_len ; numbytes = BBTOB ( numblks ) ; ASSERT ( ! ( numbytes < ( 1 << btp -> bt_sshift ) ) ) ; ASSERT ( ! ( BBTOB ( blkno ) & ( xfs_off_t ) btp -> bt_smask ) ) ; <S2SV_StartBug> pag = xfs_perag_get ( btp -> bt_mount , <S2SV_EndBug> xfs_daddr_to_agno ( btp -> bt_mount , blkno ) ) ; spin_lock ( & pag -> pag_buf_lock ) ; rbp = & pag -> pag_buf_tree . rb_node ; parent = NULL ; bp = NULL ; while ( * rbp ) { parent = * rbp ; bp = rb_entry ( parent , struct xfs_buf , b_rbnode ) ; if ( blkno < bp -> b_bn ) rbp = & ( * rbp ) -> rb_left ; else if ( blkno > bp -> b_bn ) rbp = & ( * rbp ) -> rb_right ; else { if ( bp -> b_length != numblks ) { ASSERT ( bp -> b_flags & XBF_STALE ) ; rbp = & ( * rbp ) -> rb_right ; continue ; } atomic_inc ( & bp -> b_hold ) ; goto found ; } } if ( new_bp ) { rb_link_node ( & new_bp -> b_rbnode , parent , rbp ) ; rb_insert_color ( & new_bp -> b_rbnode , & pag -> pag_buf_tree ) ; new_bp -> b_pag = pag ; spin_unlock ( & pag -> pag_buf_lock ) ; } else { XFS_STATS_INC ( xb_miss_locked ) ; spin_unlock ( & pag -> pag_buf_lock ) ; xfs_perag_put ( pag ) ; } return new_bp ; found : spin_unlock ( & pag -> pag_buf_lock ) ; xfs_perag_put ( pag ) ; if ( ! xfs_buf_trylock ( bp ) ) { if ( flags & XBF_TRYLOCK ) { xfs_buf_rele ( bp ) ; XFS_STATS_INC ( xb_busy_locked ) ; return NULL ; } xfs_buf_lock ( bp ) ; XFS_STATS_INC ( xb_get_locked_waited ) ; } if ( bp -> b_flags & XBF_STALE ) { ASSERT ( ( bp -> b_flags & _XBF_DELWRI_Q ) == 0 ) ; ASSERT ( bp -> b_iodone == NULL ) ; bp -> b_flags &= _XBF_KMEM | _XBF_PAGES ; bp -> b_ops = NULL ; } trace_xfs_buf_find ( bp , flags , _RET_IP_ ) ; XFS_STATS_INC ( xb_get_locked ) ; return bp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] . bm_bn ; xfs_daddr_t eofs <S2SV_ModStart> ) ) ; eofs = XFS_FSB_TO_BB ( btp -> bt_mount , btp -> bt_mount -> m_sb . sb_dblocks ) ; if ( blkno >= eofs ) { xfs_alert ( btp -> bt_mount , \"%s:<S2SV_blank>Block<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range:<S2SV_blank>block<S2SV_blank>0x%llx,<S2SV_blank>EOFS<S2SV_blank>0x%llx<S2SV_blank>\" , __func__ , blkno , eofs ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 qboolean S_AL_Init ( soundInterface_t * si ) { # ifdef USE_OPENAL const char * device = NULL ; const char * inputdevice = NULL ; int i ; if ( ! si ) { return qfalse ; } for ( i = 0 ; i < MAX_RAW_STREAMS ; i ++ ) { streamSourceHandles [ i ] = - 1 ; streamPlaying [ i ] = qfalse ; streamSources [ i ] = 0 ; streamNumBuffers [ i ] = 0 ; streamBufIndex [ i ] = 0 ; } s_alPrecache = Cvar_Get ( \"s_alPrecache\" , \"1\" , CVAR_ARCHIVE ) ; s_alGain = Cvar_Get ( \"s_alGain\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alSources = Cvar_Get ( \"s_alSources\" , \"128\" , CVAR_ARCHIVE ) ; s_alDopplerFactor = Cvar_Get ( \"s_alDopplerFactor\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alDopplerSpeed = Cvar_Get ( \"s_alDopplerSpeed\" , \"9000\" , CVAR_ARCHIVE ) ; s_alMinDistance = Cvar_Get ( \"s_alMinDistance\" , \"256\" , CVAR_ARCHIVE ) ; s_alMaxDistance = Cvar_Get ( \"s_alMaxDistance\" , \"1024\" , CVAR_ARCHIVE ) ; s_alRolloff = Cvar_Get ( \"s_alRolloff\" , \"1.3\" , CVAR_ARCHIVE ) ; s_alGraceDistance = Cvar_Get ( \"s_alGraceDistance\" , \"512\" , CVAR_ARCHIVE ) ; s_alTalkAnims = Cvar_Get ( \"s_alTalkAnims\" , \"160\" , CVAR_ARCHIVE ) ; <S2SV_StartBug> s_alDriver = Cvar_Get ( \"s_alDriver\" , ALDRIVER_DEFAULT , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> s_alInputDevice = Cvar_Get ( \"s_alInputDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_StartBug> s_alDevice = Cvar_Get ( \"s_alDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> if ( ! QAL_Init ( s_alDriver -> string ) ) { # if defined ( _WIN32 ) if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) && ! QAL_Init ( \"OpenAL64.dll\" ) ) { # elif defined ( __APPLE__ ) if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) && ! QAL_Init ( \"/System/Library/Frameworks/OpenAL.framework/OpenAL\" ) ) { # else if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) || ! QAL_Init ( ALDRIVER_DEFAULT ) ) { # endif return qfalse ; } } device = s_alDevice -> string ; if ( device && ! * device ) device = NULL ; inputdevice = s_alInputDevice -> string ; if ( inputdevice && ! * inputdevice ) inputdevice = NULL ; enumeration_all_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATE_ALL_EXT\" ) ; enumeration_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATION_EXT\" ) ; if ( enumeration_ext || enumeration_all_ext ) { char devicenames [ 16384 ] = \"\" ; const char * devicelist ; # ifdef _WIN32 const char * defaultdevice ; # endif int curlen ; if ( enumeration_all_ext ) { devicelist = qalcGetString ( NULL , ALC_ALL_DEVICES_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_ALL_DEVICES_SPECIFIER ) ; # endif } else { devicelist = qalcGetString ( NULL , ALC_DEVICE_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_DEVICE_SPECIFIER ) ; # endif enumeration_ext = qtrue ; } # ifdef _WIN32 if ( ! device && defaultdevice && ! strcmp ( defaultdevice , \"Generic<S2SV_blank>Hardware\" ) ) device = \"Generic<S2SV_blank>Software\" ; # endif if ( devicelist ) { while ( ( curlen = strlen ( devicelist ) ) ) { Q_strcat ( devicenames , sizeof ( devicenames ) , devicelist ) ; Q_strcat ( devicenames , sizeof ( devicenames ) , \"\\\\n\" ) ; devicelist += curlen + 1 ; } } s_alAvailableDevices = Cvar_Get ( \"s_alAvailableDevices\" , devicenames , CVAR_ROM | CVAR_NORESTART ) ; } alDevice = qalcOpenDevice ( device ) ; if ( ! alDevice && device ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , device ) ; alDevice = qalcOpenDevice ( NULL ) ; } if ( ! alDevice ) { QAL_Shutdown ( ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device.\\\\n\" ) ; return qfalse ; } alContext = qalcCreateContext ( alDevice , NULL ) ; if ( ! alContext ) { QAL_Shutdown ( ) ; qalcCloseDevice ( alDevice ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>OpenAL<S2SV_blank>context.\\\\n\" ) ; return qfalse ; } qalcMakeContextCurrent ( alContext ) ; S_AL_BufferInit ( ) ; S_AL_SrcInit ( ) ; Com_Printf ( \"Allocated<S2SV_blank>%d<S2SV_blank>sources.\\\\n\" , srcCount ) ; qalDistanceModel ( AL_INVERSE_DISTANCE_CLAMPED ) ; qalDopplerFactor ( s_alDopplerFactor -> value ) ; qalSpeedOfSound ( s_alDopplerSpeed -> value ) ; # ifdef USE_VOIP s_alCapture = Cvar_Get ( \"s_alCapture\" , \"1\" , CVAR_ARCHIVE | CVAR_LATCH ) ; if ( ! s_alCapture -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>by<S2SV_blank>user<S2SV_blank>(\\'+set<S2SV_blank>s_alCapture<S2SV_blank>1\\'<S2SV_blank>to<S2SV_blank>enable)\\\\n\" ) ; } # if USE_MUMBLE else if ( cl_useMumble -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>for<S2SV_blank>Mumble<S2SV_blank>support\\\\n\" ) ; } # endif else { # ifdef __APPLE__ if ( qalcCaptureOpenDevice == NULL ) # else if ( ! qalcIsExtensionPresent ( NULL , \"ALC_EXT_capture\" ) ) # endif { Com_Printf ( \"No<S2SV_blank>ALC_EXT_capture<S2SV_blank>support,<S2SV_blank>can\\'t<S2SV_blank>record<S2SV_blank>audio.\\\\n\" ) ; } else { char inputdevicenames [ 16384 ] = \"\" ; const char * inputdevicelist ; const char * defaultinputdevice ; int curlen ; capture_ext = qtrue ; inputdevicelist = qalcGetString ( NULL , ALC_CAPTURE_DEVICE_SPECIFIER ) ; defaultinputdevice = qalcGetString ( NULL , ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER ) ; if ( inputdevicelist ) { while ( ( curlen = strlen ( inputdevicelist ) ) ) { Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , inputdevicelist ) ; Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , \"\\\\n\" ) ; inputdevicelist += curlen + 1 ; } } s_alAvailableInputDevices = Cvar_Get ( \"s_alAvailableInputDevices\" , inputdevicenames , CVAR_ROM | CVAR_NORESTART ) ; Com_Printf ( \"OpenAL<S2SV_blank>default<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>is<S2SV_blank>\\'%s\\'\\\\n\" , defaultinputdevice ? defaultinputdevice : \"none\" ) ; alCaptureDevice = qalcCaptureOpenDevice ( inputdevice , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; if ( ! alCaptureDevice && inputdevice ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>Input<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , inputdevice ) ; alCaptureDevice = qalcCaptureOpenDevice ( NULL , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; } Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>%s.\\\\n\" , ( alCaptureDevice == NULL ) ? \"failed<S2SV_blank>to<S2SV_blank>open\" : \"opened\" ) ; } } # endif si -> Shutdown = S_AL_Shutdown ; si -> StartSound = S_AL_StartSound ; si -> StartSoundEx = S_AL_StartSoundEx ; si -> StartLocalSound = S_AL_StartLocalSound ; si -> StartBackgroundTrack = S_AL_StartBackgroundTrack ; si -> StopBackgroundTrack = S_AL_StopBackgroundTrack ; si -> FadeStreamingSound = S_AL_FadeStreamingSound ; si -> FadeAllSounds = S_AL_FadeAllSounds ; si -> StartStreamingSound = S_AL_StartStreamingSound ; si -> StopEntStreamingSound = S_AL_StopEntStreamingSound ; si -> GetVoiceAmplitude = S_AL_GetVoiceAmplitude ; si -> RawSamples = S_AL_RawSamples ; si -> StopAllSounds = S_AL_StopAllSounds ; si -> ClearLoopingSounds = S_AL_ClearLoopingSounds ; si -> AddLoopingSound = S_AL_AddLoopingSound ; si -> AddRealLoopingSound = S_AL_AddRealLoopingSound ; si -> StopLoopingSound = S_AL_StopLoopingSound ; si -> Respatialize = S_AL_Respatialize ; si -> UpdateEntityPosition = S_AL_UpdateEntityPosition ; si -> Update = S_AL_Update ; si -> DisableSounds = S_AL_DisableSounds ; si -> BeginRegistration = S_AL_BeginRegistration ; si -> RegisterSound = S_AL_RegisterSound ; si -> ClearSoundBuffer = S_AL_ClearSoundBuffer ; si -> SoundInfo = S_AL_SoundInfo ; si -> SoundList = S_AL_SoundList ; # ifdef USE_VOIP si -> StartCapture = S_AL_StartCapture ; si -> AvailableCaptureSamples = S_AL_AvailableCaptureSamples ; si -> Capture = S_AL_Capture ; si -> StopCapture = S_AL_StopCapture ; si -> MasterGain = S_AL_MasterGain ; # endif return qtrue ; # else return qfalse ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CVAR_ARCHIVE | CVAR_LATCH | CVAR_PROTECTED <S2SV_ModStart> CVAR_LATCH ) ; if ( COM_CompareExtension ( s_alDriver -> string , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , s_alDriver -> string ) ; return qfalse ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10199\n\n```\nCWE-416 mrb_value mrb_io_initialize_copy ( mrb_state * mrb , mrb_value copy ) { mrb_value orig ; mrb_value buf ; struct mrb_io * fptr_copy ; struct mrb_io * fptr_orig ; mrb_bool failed = TRUE ; mrb_get_args ( mrb , \"o\" , & orig ) ; <S2SV_StartBug> fptr_copy = ( struct mrb_io * ) DATA_PTR ( copy ) ; <S2SV_EndBug> if ( fptr_copy != NULL ) { fptr_finalize ( mrb , fptr_copy , FALSE ) ; mrb_free ( mrb , fptr_copy ) ; } <S2SV_StartBug> fptr_copy = ( struct mrb_io * ) mrb_io_alloc ( mrb ) ; <S2SV_EndBug> fptr_orig = io_get_open_fptr ( mrb , orig ) ; DATA_TYPE ( copy ) = & mrb_io_type ; DATA_PTR ( copy ) = fptr_copy ; buf = mrb_iv_get ( mrb , orig , mrb_intern_cstr ( mrb , \"@buf\" ) ) ; mrb_iv_set ( mrb , copy , mrb_intern_cstr ( mrb , \"@buf\" ) , buf ) ; fptr_copy -> fd = mrb_dup ( mrb , fptr_orig -> fd , & failed ) ; if ( failed ) { mrb_sys_fail ( mrb , 0 ) ; } mrb_fd_cloexec ( mrb , fptr_copy -> fd ) ; if ( fptr_orig -> fd2 != - 1 ) { fptr_copy -> fd2 = mrb_dup ( mrb , fptr_orig -> fd2 , & failed ) ; if ( failed ) { close ( fptr_copy -> fd ) ; mrb_sys_fail ( mrb , 0 ) ; } mrb_fd_cloexec ( mrb , fptr_copy -> fd2 ) ; } fptr_copy -> pid = fptr_orig -> pid ; fptr_copy -> readable = fptr_orig -> readable ; fptr_copy -> writable = fptr_orig -> writable ; fptr_copy -> sync = fptr_orig -> sync ; fptr_copy -> is_socket = fptr_orig -> is_socket ; return copy ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> orig ) ; fptr_orig = io_get_open_fptr ( mrb , orig ) ; <S2SV_ModStart> mrb_io_alloc ( mrb <S2SV_ModEnd> ) ; DATA_TYPE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void * btif_hh_poll_event_thread ( void * arg ) { btif_hh_device_t * p_dev = arg ; APPL_TRACE_DEBUG ( \"%s:<S2SV_blank>Thread<S2SV_blank>created<S2SV_blank>fd<S2SV_blank>=<S2SV_blank>%d\" , __FUNCTION__ , p_dev -> fd ) ; struct pollfd pfds [ 1 ] ; int ret ; pfds [ 0 ] . fd = p_dev -> fd ; pfds [ 0 ] . events = POLLIN ; uhid_set_non_blocking ( p_dev -> fd ) ; while ( p_dev -> hh_keep_polling ) { <S2SV_StartBug> ret = poll ( pfds , 1 , 50 ) ; <S2SV_EndBug> if ( ret < 0 ) { APPL_TRACE_ERROR ( \"%s:<S2SV_blank>Cannot<S2SV_blank>poll<S2SV_blank>for<S2SV_blank>fds:<S2SV_blank>%s\\\\n\" , __FUNCTION__ , strerror ( errno ) ) ; break ; } if ( pfds [ 0 ] . revents & POLLIN ) { APPL_TRACE_DEBUG ( \"btif_hh_poll_event_thread:<S2SV_blank>POLLIN\" ) ; ret = uhid_event ( p_dev ) ; if ( ret ) { break ; } } } p_dev -> hh_poll_thread_id = - 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ret = TEMP_FAILURE_RETRY ( <S2SV_ModStart> 1 , 50 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4162\n\n```\nCWE-399 static int udp_v6_push_pending_frames ( struct sock * sk ) { struct sk_buff * skb ; struct udphdr * uh ; struct udp_sock * up = udp_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; <S2SV_StartBug> struct flowi6 * fl6 = & inet -> cork . fl . u . ip6 ; <S2SV_EndBug> <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> int is_udplite = IS_UDPLITE ( sk ) ; __wsum csum = 0 ; if ( ( skb = skb_peek ( & sk -> sk_write_queue ) ) == NULL ) goto out ; uh = udp_hdr ( skb ) ; uh -> source = fl6 -> fl6_sport ; uh -> dest = fl6 -> fl6_dport ; uh -> len = htons ( up -> len ) ; uh -> check = 0 ; if ( is_udplite ) csum = udplite_csum_outgoing ( sk , skb ) ; else if ( skb -> ip_summed == CHECKSUM_PARTIAL ) { udp6_hwcsum_outgoing ( sk , skb , & fl6 -> saddr , & fl6 -> daddr , up -> len ) ; goto send ; } else csum = udp_csum_outgoing ( sk , skb ) ; uh -> check = csum_ipv6_magic ( & fl6 -> saddr , & fl6 -> daddr , up -> len , fl6 -> flowi6_proto , csum ) ; if ( uh -> check == 0 ) uh -> check = CSUM_MANGLED_0 ; send : err = ip6_push_pending_frames ( sk ) ; if ( err ) { if ( err == - ENOBUFS && ! inet6_sk ( sk ) -> recverr ) { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_SNDBUFERRORS , is_udplite ) ; err = 0 ; } } else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_OUTDATAGRAMS , is_udplite ) ; out : up -> len = 0 ; up -> pending = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct flowi6 * fl6 ; int err = 0 ; int is_udplite = IS_UDPLITE ( sk ) ; __wsum csum = 0 ; if ( up -> pending == AF_INET ) return udp_push_pending_frames ( sk ) ; <S2SV_ModStart> . ip6 ; <S2SV_ModEnd> if ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 void cJSON_ReplaceItemInObject ( cJSON * object , const char * string , cJSON * newitem ) { int i = 0 ; cJSON * c = object -> child ; <S2SV_StartBug> while ( c && cJSON_strcasecmp ( c -> string , string ) ) { <S2SV_EndBug> ++ i ; c = c -> next ; <S2SV_StartBug> } <S2SV_EndBug> if ( c ) { newitem -> string = cJSON_strdup ( string ) ; cJSON_ReplaceItemInArray ( object , i , newitem ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> string ) ) i ++ , <S2SV_ModEnd> c = c <S2SV_ModStart> -> next ; <S2SV_ModEnd> if ( c\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5892\n\n```\nCWE-436 static void bgp_packet_mpattr_tea ( struct bgp * bgp , struct peer * peer , struct stream * s , struct attr * attr , uint8_t attrtype ) { unsigned int attrlenfield = 0 ; unsigned int attrhdrlen = 0 ; struct bgp_attr_encap_subtlv * subtlvs ; struct bgp_attr_encap_subtlv * st ; const char * attrname ; if ( ! attr || ( attrtype == BGP_ATTR_ENCAP && ( ! attr -> encap_tunneltype || attr -> encap_tunneltype == BGP_ENCAP_TYPE_MPLS ) ) ) return ; switch ( attrtype ) { case BGP_ATTR_ENCAP : attrname = \"Tunnel<S2SV_blank>Encap\" ; subtlvs = attr -> encap_subtlvs ; if ( subtlvs == NULL ) return ; attrlenfield = 2 + 2 ; attrhdrlen = 1 + 1 ; break ; <S2SV_StartBug> # if ENABLE_BGP_VNC <S2SV_EndBug> case BGP_ATTR_VNC : attrname = \"VNC\" ; subtlvs = attr -> vnc_subtlvs ; if ( subtlvs == NULL ) return ; attrlenfield = 0 ; attrhdrlen = 2 + 2 ; break ; # endif default : assert ( 0 ) ; } for ( st = subtlvs ; st ; st = st -> next ) { attrlenfield += ( attrhdrlen + st -> length ) ; } if ( attrlenfield > 0xffff ) { zlog_info ( \"%s<S2SV_blank>attribute<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long<S2SV_blank>(length=%d),<S2SV_blank>can\\'t<S2SV_blank>send<S2SV_blank>it\" , attrname , attrlenfield ) ; return ; } if ( attrlenfield > 0xff ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , attrtype ) ; stream_putw ( s , attrlenfield & 0xffff ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_OPTIONAL ) ; stream_putc ( s , attrtype ) ; stream_putc ( s , attrlenfield & 0xff ) ; } if ( attrtype == BGP_ATTR_ENCAP ) { stream_putw ( s , attr -> encap_tunneltype ) ; stream_putw ( s , attrlenfield - 4 ) ; } for ( st = subtlvs ; st ; st = st -> next ) { if ( attrtype == BGP_ATTR_ENCAP ) { stream_putc ( s , st -> type ) ; stream_putc ( s , st -> length ) ; # if ENABLE_BGP_VNC } else { stream_putw ( s , st -> type ) ; stream_putw ( s , st -> length ) ; # endif } stream_put ( s , st -> value , st -> length ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # if ENABLE_BGP_VNC_ATTR <S2SV_ModEnd> case BGP_ATTR_VNC :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8660\n\n```\nCWE-264 int ovl_setattr ( struct dentry * dentry , struct iattr * attr ) { int err ; struct dentry * upperdentry ; err = ovl_want_write ( dentry ) ; if ( err ) goto out ; <S2SV_StartBug> upperdentry = ovl_dentry_upper ( dentry ) ; <S2SV_EndBug> <S2SV_StartBug> if ( upperdentry ) { <S2SV_EndBug> mutex_lock ( & upperdentry -> d_inode -> i_mutex ) ; err = notify_change ( upperdentry , attr , NULL ) ; mutex_unlock ( & upperdentry -> d_inode -> i_mutex ) ; <S2SV_StartBug> } else { <S2SV_EndBug> err = ovl_copy_up_last ( dentry , attr , false ) ; } ovl_drop_write ( dentry ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; err = ovl_copy_up ( dentry ) ; if ( ! err ) { <S2SV_ModStart> dentry ) ; <S2SV_ModEnd> mutex_lock ( & <S2SV_ModStart> ) ; } <S2SV_ModEnd> ovl_drop_write ( dentry\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8133\n\n```\nCWE-264 int do_set_thread_area ( struct task_struct * p , int idx , struct user_desc __user * u_info , int can_allocate ) { struct user_desc info ; if ( copy_from_user ( & info , u_info , sizeof ( info ) ) ) <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> if ( idx == - 1 ) idx = info . entry_number ; if ( idx == - 1 && can_allocate ) { idx = get_free_idx ( ) ; if ( idx < 0 ) return idx ; if ( put_user ( idx , & u_info -> entry_number ) ) return - EFAULT ; } if ( idx < GDT_ENTRY_TLS_MIN || idx > GDT_ENTRY_TLS_MAX ) return - EINVAL ; set_tls_desc ( p , idx , & info , 1 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - EFAULT ; if ( ! tls_desc_okay ( & info ) ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14954\n\n```\nCWE-74 int pop_open_connection ( struct PopAccountData * adata ) { char buf [ 1024 ] ; int rc = pop_connect ( adata ) ; if ( rc < 0 ) return rc ; rc = pop_capabilities ( adata , 0 ) ; if ( rc == - 1 ) goto err_conn ; if ( rc == - 2 ) return - 2 ; # ifdef USE_SSL if ( ! adata -> conn -> ssf && ( adata -> cmd_stls || C_SslForceTls ) ) { if ( C_SslForceTls ) adata -> use_stls = 2 ; if ( adata -> use_stls == 0 ) { enum QuadOption ans = query_quadoption ( C_SslStarttls , _ ( \"Secure<S2SV_blank>connection<S2SV_blank>with<S2SV_blank>TLS?\" ) ) ; if ( ans == MUTT_ABORT ) return - 2 ; adata -> use_stls = 1 ; if ( ans == MUTT_YES ) adata -> use_stls = 2 ; } if ( adata -> use_stls == 2 ) { mutt_str_strfcpy ( buf , \"STLS\\\\r\\\\n\" , sizeof ( buf ) ) ; rc = pop_query ( adata , buf , sizeof ( buf ) ) ; <S2SV_StartBug> if ( rc == - 1 ) <S2SV_EndBug> goto err_conn ; if ( rc != 0 ) { mutt_error ( \"%s\" , adata -> err_msg ) ; } else if ( mutt_ssl_starttls ( adata -> conn ) ) { mutt_error ( _ ( \"Could<S2SV_blank>not<S2SV_blank>negotiate<S2SV_blank>TLS<S2SV_blank>connection\" ) ) ; return - 2 ; } else { rc = pop_capabilities ( adata , 1 ) ; if ( rc == - 1 ) goto err_conn ; if ( rc == - 2 ) return - 2 ; } } } if ( C_SslForceTls && ! adata -> conn -> ssf ) { mutt_error ( _ ( \"Encrypted<S2SV_blank>connection<S2SV_blank>unavailable\" ) ) ; return - 2 ; } # endif rc = pop_authenticate ( adata ) ; if ( rc == - 1 ) goto err_conn ; if ( rc == - 3 ) mutt_clear_error ( ) ; if ( rc != 0 ) return rc ; rc = pop_capabilities ( adata , 2 ) ; if ( rc == - 1 ) goto err_conn ; if ( rc == - 2 ) return - 2 ; mutt_str_strfcpy ( buf , \"STAT\\\\r\\\\n\" , sizeof ( buf ) ) ; rc = pop_query ( adata , buf , sizeof ( buf ) ) ; if ( rc == - 1 ) goto err_conn ; if ( rc == - 2 ) { mutt_error ( \"%s\" , adata -> err_msg ) ; return rc ; } unsigned int n = 0 , size = 0 ; sscanf ( buf , \"+OK<S2SV_blank>%u<S2SV_blank>%u\" , & n , & size ) ; adata -> size = size ; return 0 ; err_conn : adata -> status = POP_DISCONNECTED ; mutt_error ( _ ( \"Server<S2SV_blank>closed<S2SV_blank>connection\" ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; mutt_socket_empty ( adata -> conn ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5547\n\n```\nCWE-119 static ssize_t k90_show_current_profile ( struct device * dev , struct device_attribute * attr , char * buf ) { int ret ; struct usb_interface * usbif = to_usb_interface ( dev -> parent ) ; struct usb_device * usbdev = interface_to_usbdev ( usbif ) ; int current_profile ; <S2SV_StartBug> char data [ 8 ] ; <S2SV_EndBug> ret = usb_control_msg ( usbdev , usb_rcvctrlpipe ( usbdev , 0 ) , K90_REQUEST_STATUS , USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE , 0 , 0 , data , 8 , USB_CTRL_SET_TIMEOUT ) ; if ( ret < 0 ) { dev_warn ( dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>K90<S2SV_blank>initial<S2SV_blank>state<S2SV_blank>(error<S2SV_blank>%d).\\\\n\" , ret ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> } current_profile = data [ 7 ] ; if ( current_profile < 1 || current_profile > 3 ) { dev_warn ( dev , \"Read<S2SV_blank>invalid<S2SV_blank>current<S2SV_blank>profile:<S2SV_blank>%02hhx.\\\\n\" , data [ 7 ] ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return snprintf ( buf , PAGE_SIZE , \"%d\\\\n\" , current_profile ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_profile ; char * data ; data = kmalloc ( 8 , GFP_KERNEL ) ; if ( ! data ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> ret ) ; ret = - EIO ; goto out <S2SV_ModEnd> ; } current_profile <S2SV_ModStart> ] ) ; ret = <S2SV_ModEnd> - EIO ; <S2SV_ModStart> - EIO ; goto out ; } ret = snprintf ( buf , PAGE_SIZE , \"%d\\\\n\" , current_profile ) ; out : kfree ( data ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7472\n\n```\nCWE-404 static int install_thread_keyring ( void ) { struct cred * new ; int ret ; new = prepare_creds ( ) ; if ( ! new ) <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> BUG_ON ( new -> thread_keyring ) ; ret = install_thread_keyring_to_cred ( new ) ; if ( ret < 0 ) { abort_creds ( new ) ; return ret ; } return commit_creds ( new ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - ENOMEM <S2SV_ModEnd> ; ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-9383\n\n```\nCWE-125 static void set_fdc ( int drive ) <S2SV_StartBug> { <S2SV_EndBug> if ( drive >= 0 && drive < N_DRIVE ) { <S2SV_StartBug> fdc = FDC ( drive ) ; <S2SV_EndBug> current_drive = drive ; } <S2SV_StartBug> if ( fdc != 1 && fdc != 0 ) { <S2SV_EndBug> pr_info ( \"bad<S2SV_blank>fdc<S2SV_blank>value\\\\n\" ) ; return ; <S2SV_StartBug> } <S2SV_EndBug> set_dor ( fdc , ~ 0 , 8 ) ; # if N_FDC > 1 set_dor ( 1 - fdc , ~ 8 , 0 ) ; # endif if ( FDCS -> rawcmd == 2 ) reset_fdc_info ( 1 ) ; if ( fd_inb ( FD_STATUS ) != STATUS_READY ) FDCS -> reset = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> drive ) { unsigned int new_fdc = fdc ; <S2SV_ModStart> N_DRIVE ) { new_fdc <S2SV_ModEnd> = FDC ( <S2SV_ModStart> } if ( new_fdc >= N_FDC <S2SV_ModEnd> ) { pr_info <S2SV_ModStart> return ; } fdc = new_fdc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19082\n\n```\nCWE-401 struct resource_pool * dcn10_create_resource_pool ( const struct dc_init_data * init_data , struct dc * dc ) { struct dcn10_resource_pool * pool = kzalloc ( sizeof ( struct dcn10_resource_pool ) , GFP_KERNEL ) ; if ( ! pool ) return NULL ; if ( construct ( init_data -> num_virtual_links , dc , pool ) ) return & pool -> base ; <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> base ; kfree ( pool ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_copy_mem16x16_c ( unsigned char * src , int src_stride , unsigned char * dst , int dst_stride ) { int r ; for ( r = 0 ; r < 16 ; r ++ ) { <S2SV_StartBug> # if ! ( CONFIG_FAST_UNALIGNED ) <S2SV_EndBug> dst [ 0 ] = src [ 0 ] ; dst [ 1 ] = src [ 1 ] ; dst [ 2 ] = src [ 2 ] ; dst [ 3 ] = src [ 3 ] ; dst [ 4 ] = src [ 4 ] ; dst [ 5 ] = src [ 5 ] ; dst [ 6 ] = src [ 6 ] ; dst [ 7 ] = src [ 7 ] ; dst [ 8 ] = src [ 8 ] ; dst [ 9 ] = src [ 9 ] ; dst [ 10 ] = src [ 10 ] ; dst [ 11 ] = src [ 11 ] ; dst [ 12 ] = src [ 12 ] ; dst [ 13 ] = src [ 13 ] ; dst [ 14 ] = src [ 14 ] ; dst [ 15 ] = src [ 15 ] ; # else ( ( uint32_t * ) dst ) [ 0 ] = ( ( uint32_t * ) src ) [ 0 ] ; ( ( uint32_t * ) dst ) [ 1 ] = ( ( uint32_t * ) src ) [ 1 ] ; ( ( uint32_t * ) dst ) [ 2 ] = ( ( uint32_t * ) src ) [ 2 ] ; ( ( uint32_t * ) dst ) [ 3 ] = ( ( uint32_t * ) src ) [ 3 ] ; # endif src += src_stride ; dst += dst_stride ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memcpy ( dst , src , 16 ) ; <S2SV_ModEnd> src += src_stride\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1860\n\n```\nCWE-119 static void wdm_in_callback ( struct urb * urb ) { struct wdm_device * desc = urb -> context ; int status = urb -> status ; <S2SV_StartBug> spin_lock ( & desc -> iuspin ) ; <S2SV_EndBug> clear_bit ( WDM_RESPONDING , & desc -> flags ) ; if ( status ) { switch ( status ) { case - ENOENT : dev_dbg ( & desc -> intf -> dev , \"nonzero<S2SV_blank>urb<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>-ENOENT\" ) ; goto skip_error ; case - ECONNRESET : dev_dbg ( & desc -> intf -> dev , \"nonzero<S2SV_blank>urb<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>-ECONNRESET\" ) ; goto skip_error ; case - ESHUTDOWN : dev_dbg ( & desc -> intf -> dev , \"nonzero<S2SV_blank>urb<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>-ESHUTDOWN\" ) ; goto skip_error ; case - EPIPE : dev_err ( & desc -> intf -> dev , \"nonzero<S2SV_blank>urb<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>-EPIPE\\\\n\" ) ; break ; default : dev_err ( & desc -> intf -> dev , \"Unexpected<S2SV_blank>error<S2SV_blank>%d\\\\n\" , status ) ; break ; } } desc -> rerr = status ; <S2SV_StartBug> desc -> reslength = urb -> actual_length ; <S2SV_EndBug> <S2SV_StartBug> memmove ( desc -> ubuf + desc -> length , desc -> inbuf , desc -> reslength ) ; <S2SV_EndBug> desc -> length += desc -> reslength ; skip_error : wake_up ( & desc -> wait ) ; set_bit ( WDM_READ , & desc -> flags ) ; spin_unlock ( & desc -> iuspin ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> status ; int length = urb -> actual_length ; <S2SV_ModStart> = status ; if ( length + desc -> length > desc -> wMaxCommand ) { set_bit ( WDM_OVERFLOW , & desc -> flags ) ; } else { if ( ! test_bit ( WDM_OVERFLOW , & desc -> flags ) ) { <S2SV_ModEnd> memmove ( desc <S2SV_ModStart> -> inbuf , length ) ; desc -> length += length ; <S2SV_ModStart> desc -> reslength = length ; } } <S2SV_ModEnd> skip_error : wake_up\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 void common_timer_get ( struct k_itimer * timr , struct itimerspec64 * cur_setting ) { const struct k_clock * kc = timr -> kclock ; ktime_t now , remaining , iv ; struct timespec64 ts64 ; bool sig_none ; sig_none = timr -> it_sigev_notify == SIGEV_NONE ; iv = timr -> it_interval ; if ( iv ) { cur_setting -> it_interval = ktime_to_timespec64 ( iv ) ; } else if ( ! timr -> it_active ) { if ( ! sig_none ) return ; } kc -> clock_get ( timr -> it_clock , & ts64 ) ; now = timespec64_to_ktime ( ts64 ) ; if ( iv && ( timr -> it_requeue_pending & REQUEUE_PENDING || sig_none ) ) <S2SV_StartBug> timr -> it_overrun += ( int ) kc -> timer_forward ( timr , now ) ; <S2SV_EndBug> remaining = kc -> timer_remaining ( timr , now ) ; if ( remaining <= 0 ) { if ( ! sig_none ) cur_setting -> it_value . tv_nsec = 1 ; } else { cur_setting -> it_value = ktime_to_timespec64 ( remaining ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> it_overrun += <S2SV_ModEnd> kc -> timer_forward\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7015\n\n```\nCWE-20 static int flashsv_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { int buf_size = avpkt -> size ; FlashSVContext * s = avctx -> priv_data ; int h_blocks , v_blocks , h_part , v_part , i , j , ret ; GetBitContext gb ; int last_blockwidth = s -> block_width ; int last_blockheight = s -> block_height ; if ( buf_size == 0 ) return 0 ; if ( buf_size < 4 ) return - 1 ; init_get_bits ( & gb , avpkt -> data , buf_size * 8 ) ; s -> block_width = 16 * ( get_bits ( & gb , 4 ) + 1 ) ; s -> image_width = get_bits ( & gb , 12 ) ; s -> block_height = 16 * ( get_bits ( & gb , 4 ) + 1 ) ; s -> image_height = get_bits ( & gb , 12 ) ; if ( last_blockwidth != s -> block_width || last_blockheight != s -> block_height ) av_freep ( & s -> blocks ) ; if ( s -> ver == 2 ) { skip_bits ( & gb , 6 ) ; if ( get_bits1 ( & gb ) ) { avpriv_request_sample ( avctx , \"iframe\" ) ; return AVERROR_PATCHWELCOME ; } if ( get_bits1 ( & gb ) ) { avpriv_request_sample ( avctx , \"Custom<S2SV_blank>palette\" ) ; return AVERROR_PATCHWELCOME ; } } h_blocks = s -> image_width / s -> block_width ; h_part = s -> image_width % s -> block_width ; v_blocks = s -> image_height / s -> block_height ; v_part = s -> image_height % s -> block_height ; if ( s -> block_size < s -> block_width * s -> block_height ) { int tmpblock_size = 3 * s -> block_width * s -> block_height ; s -> tmpblock = av_realloc ( s -> tmpblock , tmpblock_size ) ; if ( ! s -> tmpblock ) { av_log ( avctx , AV_LOG_ERROR , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>decompression<S2SV_blank>buffer.\\\\n\" ) ; return AVERROR ( ENOMEM ) ; } if ( s -> ver == 2 ) { s -> deflate_block_size = calc_deflate_block_size ( tmpblock_size ) ; if ( s -> deflate_block_size <= 0 ) { av_log ( avctx , AV_LOG_ERROR , \"Can\\'t<S2SV_blank>determine<S2SV_blank>deflate<S2SV_blank>buffer<S2SV_blank>size.\\\\n\" ) ; return - 1 ; } s -> deflate_block = av_realloc ( s -> deflate_block , s -> deflate_block_size ) ; if ( ! s -> deflate_block ) { av_log ( avctx , AV_LOG_ERROR , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>deflate<S2SV_blank>buffer.\\\\n\" ) ; return AVERROR ( ENOMEM ) ; } } } s -> block_size = s -> block_width * s -> block_height ; if ( avctx -> width == 0 && avctx -> height == 0 ) { avcodec_set_dimensions ( avctx , s -> image_width , s -> image_height ) ; } if ( avctx -> width != s -> image_width || avctx -> height != s -> image_height ) { av_log ( avctx , AV_LOG_ERROR , \"Frame<S2SV_blank>width<S2SV_blank>or<S2SV_blank>height<S2SV_blank>differs<S2SV_blank>from<S2SV_blank>first<S2SV_blank>frame!\\\\n\" ) ; av_log ( avctx , AV_LOG_ERROR , \"fh<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>fv<S2SV_blank>%d<S2SV_blank><S2SV_blank>vs<S2SV_blank><S2SV_blank>ch<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>cv<S2SV_blank>=<S2SV_blank>%d\\\\n\" , avctx -> height , avctx -> width , s -> image_height , s -> image_width ) ; return AVERROR_INVALIDDATA ; } s -> is_keyframe = ( avpkt -> flags & AV_PKT_FLAG_KEY ) && ( s -> ver == 2 ) ; if ( s -> is_keyframe ) { s -> keyframedata = av_realloc ( s -> keyframedata , avpkt -> size ) ; memcpy ( s -> keyframedata , avpkt -> data , avpkt -> size ) ; } if ( s -> ver == 2 && ! s -> blocks ) s -> blocks = av_mallocz ( ( v_blocks + ! ! v_part ) * ( h_blocks + ! ! h_part ) * sizeof ( s -> blocks [ 0 ] ) ) ; av_dlog ( avctx , \"image:<S2SV_blank>%dx%d<S2SV_blank>block:<S2SV_blank>%dx%d<S2SV_blank>num:<S2SV_blank>%dx%d<S2SV_blank>part:<S2SV_blank>%dx%d\\\\n\" , s -> image_width , s -> image_height , s -> block_width , s -> block_height , h_blocks , v_blocks , h_part , v_part ) ; if ( ( ret = ff_reget_buffer ( avctx , & s -> frame ) ) < 0 ) return ret ; for ( j = 0 ; j < v_blocks + ( v_part ? 1 : 0 ) ; j ++ ) { int y_pos = j * s -> block_height ; int cur_blk_height = ( j < v_blocks ) ? s -> block_height : v_part ; for ( i = 0 ; i < h_blocks + ( h_part ? 1 : 0 ) ; i ++ ) { int x_pos = i * s -> block_width ; int cur_blk_width = ( i < h_blocks ) ? s -> block_width : h_part ; int has_diff = 0 ; int size = get_bits ( & gb , 16 ) ; s -> color_depth = 0 ; s -> zlibprime_curr = 0 ; s -> zlibprime_prev = 0 ; s -> diff_start = 0 ; s -> diff_height = cur_blk_height ; if ( 8 * size > get_bits_left ( & gb ) ) { av_frame_unref ( & s -> frame ) ; return AVERROR_INVALIDDATA ; } if ( s -> ver == 2 && size ) { skip_bits ( & gb , 3 ) ; s -> color_depth = get_bits ( & gb , 2 ) ; has_diff = get_bits1 ( & gb ) ; s -> zlibprime_curr = get_bits1 ( & gb ) ; s -> zlibprime_prev = get_bits1 ( & gb ) ; if ( s -> color_depth != 0 && s -> color_depth != 2 ) { av_log ( avctx , AV_LOG_ERROR , \"%dx%d<S2SV_blank>invalid<S2SV_blank>color<S2SV_blank>depth<S2SV_blank>%d\\\\n\" , i , j , s -> color_depth ) ; return AVERROR_INVALIDDATA ; } if ( has_diff ) { if ( ! s -> keyframe ) { av_log ( avctx , AV_LOG_ERROR , \"inter<S2SV_blank>frame<S2SV_blank>without<S2SV_blank>keyframe\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> diff_start = get_bits ( & gb , 8 ) ; s -> diff_height = get_bits ( & gb , 8 ) ; <S2SV_StartBug> av_log ( avctx , AV_LOG_DEBUG , <S2SV_EndBug> \"%dx%d<S2SV_blank>diff<S2SV_blank>start<S2SV_blank>%d<S2SV_blank>height<S2SV_blank>%d\\\\n\" , i , j , s -> diff_start , s -> diff_height ) ; size -= 2 ; } if ( s -> zlibprime_prev ) av_log ( avctx , AV_LOG_DEBUG , \"%dx%d<S2SV_blank>zlibprime_prev\\\\n\" , i , j ) ; if ( s -> zlibprime_curr ) { int col = get_bits ( & gb , 8 ) ; int row = get_bits ( & gb , 8 ) ; av_log ( avctx , AV_LOG_DEBUG , \"%dx%d<S2SV_blank>zlibprime_curr<S2SV_blank>%dx%d\\\\n\" , i , j , col , row ) ; size -= 2 ; avpriv_request_sample ( avctx , \"zlibprime_curr\" ) ; return AVERROR_PATCHWELCOME ; } if ( ! s -> blocks && ( s -> zlibprime_curr || s -> zlibprime_prev ) ) { av_log ( avctx , AV_LOG_ERROR , \"no<S2SV_blank>data<S2SV_blank>available<S2SV_blank>for<S2SV_blank>zlib<S2SV_blank>\" \"priming\\\\n\" ) ; return AVERROR_INVALIDDATA ; } size -- ; } if ( has_diff ) { int k ; int off = ( s -> image_height - y_pos - 1 ) * s -> frame . linesize [ 0 ] ; for ( k = 0 ; k < cur_blk_height ; k ++ ) memcpy ( s -> frame . data [ 0 ] + off - k * s -> frame . linesize [ 0 ] + x_pos * 3 , s -> keyframe + off - k * s -> frame . linesize [ 0 ] + x_pos * 3 , cur_blk_width * 3 ) ; } if ( size ) { if ( flashsv_decode_block ( avctx , avpkt , & gb , size , cur_blk_width , cur_blk_height , x_pos , y_pos , i + j * ( h_blocks + ! ! h_part ) ) ) av_log ( avctx , AV_LOG_ERROR , \"error<S2SV_blank>in<S2SV_blank>decompression<S2SV_blank>of<S2SV_blank>block<S2SV_blank>%dx%d\\\\n\" , i , j ) ; } } } if ( s -> is_keyframe && s -> ver == 2 ) { if ( ! s -> keyframe ) { s -> keyframe = av_malloc ( s -> frame . linesize [ 0 ] * avctx -> height ) ; if ( ! s -> keyframe ) { av_log ( avctx , AV_LOG_ERROR , \"Cannot<S2SV_blank>allocate<S2SV_blank>image<S2SV_blank>data\\\\n\" ) ; return AVERROR ( ENOMEM ) ; } } memcpy ( s -> keyframe , s -> frame . data [ 0 ] , s -> frame . linesize [ 0 ] * avctx -> height ) ; } if ( ( ret = av_frame_ref ( data , & s -> frame ) ) < 0 ) return ret ; * got_frame = 1 ; if ( ( get_bits_count ( & gb ) / 8 ) != buf_size ) av_log ( avctx , AV_LOG_ERROR , \"buffer<S2SV_blank>not<S2SV_blank>fully<S2SV_blank>consumed<S2SV_blank>(%d<S2SV_blank>!=<S2SV_blank>%d)\\\\n\" , buf_size , ( get_bits_count ( & gb ) / 8 ) ) ; return buf_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 8 ) ; if ( s -> diff_start + s -> diff_height > cur_blk_height ) { av_log ( avctx , AV_LOG_ERROR , \"Block<S2SV_blank>parameters<S2SV_blank>invalid\\\\n\" ) ; return AVERROR_INVALIDDATA ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 static int ssh_packet_set_postauth ( struct ssh * ssh ) { <S2SV_StartBug> struct sshcomp * comp ; <S2SV_EndBug> int r , mode ; debug ( \"%s:<S2SV_blank>called\" , __func__ ) ; ssh -> state -> after_authentication = 1 ; ssh -> state -> rekeying = 0 ; <S2SV_StartBug> for ( mode = 0 ; mode < MODE_MAX ; mode ++ ) { <S2SV_EndBug> if ( ssh -> state -> newkeys [ mode ] == NULL ) continue ; comp = & ssh -> state -> newkeys [ mode ] -> comp ; if ( comp && comp -> enabled && <S2SV_StartBug> ( r = ssh_packet_init_compression ( ssh ) ) != 0 ) <S2SV_EndBug> return r ; <S2SV_StartBug> } <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ssh ) { int r <S2SV_ModEnd> ; debug ( <S2SV_ModStart> = 0 ; if ( <S2SV_ModEnd> ( r = <S2SV_ModStart> ( r = ssh_packet_enable_delayed_compress <S2SV_ModEnd> ( ssh ) <S2SV_ModStart> return r ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static void rdpdr_process ( STREAM s ) { uint32 handle ; uint16 vmin ; uint16 component ; uint16 pakid ; <S2SV_StartBug> logger ( Protocol , Debug , \"rdpdr_process()\" ) ; <S2SV_EndBug> in_uint16 ( s , component ) ; in_uint16 ( s , pakid ) ; if ( component == RDPDR_CTYP_CORE ) { switch ( pakid ) { case PAKID_CORE_DEVICE_IOREQUEST : rdpdr_process_irp ( s ) ; break ; case PAKID_CORE_SERVER_ANNOUNCE : in_uint8s ( s , 2 ) ; in_uint16_le ( s , vmin ) ; <S2SV_StartBug> in_uint32_le ( s , g_client_id ) ; <S2SV_EndBug> if ( vmin < 0x000c ) g_client_id = 0x815ed39d ; g_epoch ++ ; # if WITH_SCARD scard_release_all_contexts ( ) ; # endif rdpdr_send_client_announce_reply ( ) ; rdpdr_send_client_name_request ( ) ; break ; case PAKID_CORE_CLIENTID_CONFIRM : rdpdr_send_client_device_list_announce ( ) ; break ; case PAKID_CORE_DEVICE_REPLY : in_uint32 ( s , handle ) ; logger ( Protocol , Debug , \"rdpdr_process(),<S2SV_blank>server<S2SV_blank>connected<S2SV_blank>to<S2SV_blank>resource<S2SV_blank>%d\" , handle ) ; break ; case PAKID_CORE_SERVER_CAPABILITY : rdpdr_send_client_capability_response ( ) ; break ; default : logger ( Protocol , Debug , \"rdpdr_process(),<S2SV_blank>pakid<S2SV_blank>0x%x<S2SV_blank>of<S2SV_blank>component<S2SV_blank>0x%x\" , pakid , component ) ; break ; } } else if ( component == RDPDR_CTYP_PRN ) { if ( pakid == PAKID_PRN_CACHE_DATA ) printercache_process ( s ) ; } else logger ( Protocol , Warning , \"rdpdr_process(),<S2SV_blank>unhandled<S2SV_blank>component<S2SV_blank>0x%x\" , component ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint16 pakid ; struct stream packet = * s ; <S2SV_ModStart> g_client_id ) ; if ( ! s_check ( s ) ) { rdp_protocol_error ( \"rdpdr_process(),<S2SV_blank>consume<S2SV_blank>of<S2SV_blank>g_client_id<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>did<S2SV_blank>overrun\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void filter_selectively_vert_row2 ( PLANE_TYPE plane_type , <S2SV_EndBug> uint8_t * s , int pitch , unsigned int mask_16x16_l , unsigned int mask_8x8_l , unsigned int mask_4x4_l , unsigned int mask_4x4_int_l , const loop_filter_info_n * lfi_n , const uint8_t * lfl ) { <S2SV_StartBug> const int mask_shift = plane_type ? 4 : 8 ; <S2SV_EndBug> <S2SV_StartBug> const int mask_cutoff = plane_type ? 0xf : 0xff ; <S2SV_EndBug> <S2SV_StartBug> const int lfl_forward = plane_type ? 4 : 8 ; <S2SV_EndBug> unsigned int mask_16x16_0 = mask_16x16_l & mask_cutoff ; unsigned int mask_8x8_0 = mask_8x8_l & mask_cutoff ; unsigned int mask_4x4_0 = mask_4x4_l & mask_cutoff ; unsigned int mask_4x4_int_0 = mask_4x4_int_l & mask_cutoff ; unsigned int mask_16x16_1 = ( mask_16x16_l >> mask_shift ) & mask_cutoff ; unsigned int mask_8x8_1 = ( mask_8x8_l >> mask_shift ) & mask_cutoff ; unsigned int mask_4x4_1 = ( mask_4x4_l >> mask_shift ) & mask_cutoff ; unsigned int mask_4x4_int_1 = ( mask_4x4_int_l >> mask_shift ) & mask_cutoff ; unsigned int mask ; for ( mask = mask_16x16_0 | mask_8x8_0 | mask_4x4_0 | mask_4x4_int_0 | mask_16x16_1 | mask_8x8_1 | mask_4x4_1 | mask_4x4_int_1 ; mask ; mask >>= 1 ) { const loop_filter_thresh * lfi0 = lfi_n -> lfthr + * lfl ; const loop_filter_thresh * lfi1 = lfi_n -> lfthr + * ( lfl + lfl_forward ) ; if ( mask & 1 ) { if ( ( mask_16x16_0 | mask_16x16_1 ) & 1 ) { if ( ( mask_16x16_0 & mask_16x16_1 ) & 1 ) { <S2SV_StartBug> vp9_lpf_vertical_16_dual ( s , pitch , lfi0 -> mblim , lfi0 -> lim , <S2SV_EndBug> lfi0 -> hev_thr ) ; } else if ( mask_16x16_0 & 1 ) { <S2SV_StartBug> vp9_lpf_vertical_16 ( s , pitch , lfi0 -> mblim , lfi0 -> lim , <S2SV_EndBug> lfi0 -> hev_thr ) ; } else { <S2SV_StartBug> vp9_lpf_vertical_16 ( s + 8 * pitch , pitch , lfi1 -> mblim , <S2SV_EndBug> lfi1 -> lim , lfi1 -> hev_thr ) ; } } if ( ( mask_8x8_0 | mask_8x8_1 ) & 1 ) { if ( ( mask_8x8_0 & mask_8x8_1 ) & 1 ) { <S2SV_StartBug> vp9_lpf_vertical_8_dual ( s , pitch , lfi0 -> mblim , lfi0 -> lim , <S2SV_EndBug> lfi0 -> hev_thr , lfi1 -> mblim , lfi1 -> lim , lfi1 -> hev_thr ) ; } else if ( mask_8x8_0 & 1 ) { <S2SV_StartBug> vp9_lpf_vertical_8 ( s , pitch , lfi0 -> mblim , lfi0 -> lim , lfi0 -> hev_thr , <S2SV_EndBug> 1 ) ; } else { <S2SV_StartBug> vp9_lpf_vertical_8 ( s + 8 * pitch , pitch , lfi1 -> mblim , lfi1 -> lim , <S2SV_EndBug> lfi1 -> hev_thr , 1 ) ; } } if ( ( mask_4x4_0 | mask_4x4_1 ) & 1 ) { if ( ( mask_4x4_0 & mask_4x4_1 ) & 1 ) { <S2SV_StartBug> vp9_lpf_vertical_4_dual ( s , pitch , lfi0 -> mblim , lfi0 -> lim , <S2SV_EndBug> lfi0 -> hev_thr , lfi1 -> mblim , lfi1 -> lim , lfi1 -> hev_thr ) ; } else if ( mask_4x4_0 & 1 ) { <S2SV_StartBug> vp9_lpf_vertical_4 ( s , pitch , lfi0 -> mblim , lfi0 -> lim , lfi0 -> hev_thr , <S2SV_EndBug> 1 ) ; } else { <S2SV_StartBug> vp9_lpf_vertical_4 ( s + 8 * pitch , pitch , lfi1 -> mblim , lfi1 -> lim , <S2SV_EndBug> lfi1 -> hev_thr , 1 ) ; } } if ( ( mask_4x4_int_0 | mask_4x4_int_1 ) & 1 ) { if ( ( mask_4x4_int_0 & mask_4x4_int_1 ) & 1 ) { <S2SV_StartBug> vp9_lpf_vertical_4_dual ( s + 4 , pitch , lfi0 -> mblim , lfi0 -> lim , <S2SV_EndBug> lfi0 -> hev_thr , lfi1 -> mblim , lfi1 -> lim , lfi1 -> hev_thr ) ; } else if ( mask_4x4_int_0 & 1 ) { <S2SV_StartBug> vp9_lpf_vertical_4 ( s + 4 , pitch , lfi0 -> mblim , lfi0 -> lim , <S2SV_EndBug> lfi0 -> hev_thr , 1 ) ; } else { <S2SV_StartBug> vp9_lpf_vertical_4 ( s + 8 * pitch + 4 , pitch , lfi1 -> mblim , lfi1 -> lim , <S2SV_EndBug> lfi1 -> hev_thr , 1 ) ; } } } s += 8 ; lfl += 1 ; mask_16x16_0 >>= 1 ; mask_8x8_0 >>= 1 ; mask_4x4_0 >>= 1 ; mask_4x4_int_0 >>= 1 ; mask_16x16_1 >>= 1 ; mask_8x8_1 >>= 1 ; mask_4x4_1 >>= 1 ; mask_4x4_int_1 >>= 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void filter_selectively_vert_row2 ( int subsampling_factor <S2SV_ModEnd> , uint8_t * <S2SV_ModStart> int mask_shift = subsampling_factor <S2SV_ModEnd> ? 4 : <S2SV_ModStart> int mask_cutoff = subsampling_factor <S2SV_ModEnd> ? 0xf : <S2SV_ModStart> int lfl_forward = subsampling_factor <S2SV_ModEnd> ? 4 : <S2SV_ModStart> 1 ) { vpx_lpf_vertical_16_dual <S2SV_ModEnd> ( s , <S2SV_ModStart> 1 ) { vpx_lpf_vertical_16 <S2SV_ModEnd> ( s , <S2SV_ModStart> } else { vpx_lpf_vertical_16 <S2SV_ModEnd> ( s + <S2SV_ModStart> 1 ) { vpx_lpf_vertical_8_dual <S2SV_ModEnd> ( s , <S2SV_ModStart> 1 ) { vpx_lpf_vertical_8 <S2SV_ModEnd> ( s , <S2SV_ModStart> } else { vpx_lpf_vertical_8 <S2SV_ModEnd> ( s + <S2SV_ModStart> 1 ) { vpx_lpf_vertical_4_dual <S2SV_ModEnd> ( s , <S2SV_ModStart> 1 ) { vpx_lpf_vertical_4 <S2SV_ModEnd> ( s , <S2SV_ModStart> } else { vpx_lpf_vertical_4 <S2SV_ModEnd> ( s + <S2SV_ModStart> 1 ) { vpx_lpf_vertical_4_dual <S2SV_ModEnd> ( s + <S2SV_ModStart> 1 ) { vpx_lpf_vertical_4 <S2SV_ModEnd> ( s + <S2SV_ModStart> } else { vpx_lpf_vertical_4 <S2SV_ModEnd> ( s +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2313\n\n```\nCWE-264 static int rio_ioctl ( struct net_device * dev , struct ifreq * rq , int cmd ) { int phy_addr ; struct netdev_private * np = netdev_priv ( dev ) ; <S2SV_StartBug> struct mii_data * miidata = ( struct mii_data * ) & rq -> ifr_ifru ; <S2SV_EndBug> struct netdev_desc * desc ; int i ; phy_addr = np -> phy_addr ; switch ( cmd ) { <S2SV_StartBug> case SIOCDEVPRIVATE : <S2SV_EndBug> break ; <S2SV_StartBug> case SIOCDEVPRIVATE + 1 : <S2SV_EndBug> <S2SV_StartBug> miidata -> out_value = mii_read ( dev , phy_addr , miidata -> reg_num ) ; <S2SV_EndBug> break ; <S2SV_StartBug> case SIOCDEVPRIVATE + 2 : <S2SV_EndBug> <S2SV_StartBug> mii_write ( dev , phy_addr , miidata -> reg_num , miidata -> in_value ) ; <S2SV_EndBug> break ; case SIOCDEVPRIVATE + 3 : break ; case SIOCDEVPRIVATE + 4 : break ; case SIOCDEVPRIVATE + 5 : netif_stop_queue ( dev ) ; break ; case SIOCDEVPRIVATE + 6 : netif_wake_queue ( dev ) ; break ; case SIOCDEVPRIVATE + 7 : printk ( \"tx_full=%x<S2SV_blank>cur_tx=%lx<S2SV_blank>old_tx=%lx<S2SV_blank>cur_rx=%lx<S2SV_blank>old_rx=%lx\\\\n\" , netif_queue_stopped ( dev ) , np -> cur_tx , np -> old_tx , np -> cur_rx , np -> old_rx ) ; break ; case SIOCDEVPRIVATE + 8 : printk ( \"TX<S2SV_blank>ring:\\\\n\" ) ; for ( i = 0 ; i < TX_RING_SIZE ; i ++ ) { desc = & np -> tx_ring [ i ] ; printk ( \"%02x:cur:%08x<S2SV_blank>next:%08x<S2SV_blank>status:%08x<S2SV_blank>frag1:%08x<S2SV_blank>frag0:%08x\" , i , ( u32 ) ( np -> tx_ring_dma + i * sizeof ( * desc ) ) , ( u32 ) le64_to_cpu ( desc -> next_desc ) , ( u32 ) le64_to_cpu ( desc -> status ) , ( u32 ) ( le64_to_cpu ( desc -> fraginfo ) >> 32 ) , ( u32 ) le64_to_cpu ( desc -> fraginfo ) ) ; printk ( \"\\\\n\" ) ; } printk ( \"\\\\n\" ) ; break ; default : return - EOPNOTSUPP ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct mii_ioctl_data <S2SV_ModEnd> * miidata = <S2SV_ModStart> * miidata = if_mii ( rq ) <S2SV_ModEnd> ; phy_addr = <S2SV_ModStart> ) { case SIOCGMIIPHY : miidata -> phy_id = phy_addr ; <S2SV_ModEnd> break ; case <S2SV_ModStart> break ; case SIOCGMIIREG <S2SV_ModEnd> : miidata -> <S2SV_ModStart> : miidata -> val_out <S2SV_ModEnd> = mii_read ( <S2SV_ModStart> break ; case SIOCSMIIREG : if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; <S2SV_ModEnd> mii_write ( dev <S2SV_ModStart> , miidata -> val_in <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20016\n\n```\nCWE-787 static int directblockRead ( struct READER * reader , struct DATAOBJECT * dataobject , struct FRACTALHEAP * fractalheap ) { char buf [ 4 ] , * name , * value ; int size , offset_size , length_size , err , len ; uint8_t typeandversion ; uint64_t unknown , heap_header_address , block_offset , block_size , offset , length ; long store ; struct DIR * dir ; struct MYSOFA_ATTRIBUTE * attr ; UNUSED ( offset ) ; UNUSED ( block_size ) ; UNUSED ( block_offset ) ; <S2SV_StartBug> if ( fread ( buf , 1 , 4 , reader -> fhd ) != 4 || strncmp ( buf , \"FHDB\" , 4 ) ) { <S2SV_EndBug> log ( \"cannot<S2SV_blank>read<S2SV_blank>signature<S2SV_blank>of<S2SV_blank>fractal<S2SV_blank>heap<S2SV_blank>indirect<S2SV_blank>block\\\\n\" ) ; return MYSOFA_INVALID_FORMAT ; } <S2SV_StartBug> log ( \"%08\" PRIX64 \"<S2SV_blank>%.4s\\\\n\" , ( uint64_t ) ftell ( reader -> fhd ) - 4 , buf ) ; <S2SV_EndBug> if ( fgetc ( reader -> fhd ) != 0 ) { log ( \"object<S2SV_blank>FHDB<S2SV_blank>must<S2SV_blank>have<S2SV_blank>version<S2SV_blank>0\\\\n\" ) ; return MYSOFA_UNSUPPORTED_FORMAT ; } if ( fseek ( reader -> fhd , reader -> superblock . size_of_offsets , SEEK_CUR ) < 0 ) return errno ; size = ( fractalheap -> maximum_heap_size + 7 ) / 8 ; block_offset = readValue ( reader , size ) ; if ( fractalheap -> flags & 2 ) if ( fseek ( reader -> fhd , 4 , SEEK_CUR ) ) return errno ; offset_size = ceilf ( log2f ( fractalheap -> maximum_heap_size ) / 8 ) ; if ( fractalheap -> maximum_direct_block_size < fractalheap -> maximum_size ) length_size = ceilf ( log2f ( fractalheap -> maximum_direct_block_size ) / 8 ) ; else length_size = ceilf ( log2f ( fractalheap -> maximum_size ) / 8 ) ; log ( \"<S2SV_blank>%d<S2SV_blank>%\" PRIu64 \"<S2SV_blank>%d\\\\n\" , size , block_offset , offset_size ) ; do { typeandversion = ( uint8_t ) fgetc ( reader -> fhd ) ; offset = readValue ( reader , offset_size ) ; length = readValue ( reader , length_size ) ; if ( offset > 0x10000000 || length > 0x10000000 ) return MYSOFA_UNSUPPORTED_FORMAT ; log ( \"<S2SV_blank>%d<S2SV_blank>%4\" PRIX64 \"<S2SV_blank>%\" PRIX64 \"<S2SV_blank>%08lX\\\\n\" , typeandversion , offset , length , ftell ( reader -> fhd ) ) ; if ( typeandversion == 3 ) { if ( readValue ( reader , 5 ) != 0x0000040008 ) { log ( \"FHDB<S2SV_blank>type<S2SV_blank>3<S2SV_blank>unsupported<S2SV_blank>values\" ) ; return MYSOFA_UNSUPPORTED_FORMAT ; } if ( ! ( name = malloc ( length + 1 ) ) ) return MYSOFA_NO_MEMORY ; if ( fread ( name , 1 , length , reader -> fhd ) != length ) { free ( name ) ; return MYSOFA_READ_ERROR ; } name [ length ] = 0 ; if ( readValue ( reader , 4 ) != 0x00000013 ) { log ( \"FHDB<S2SV_blank>type<S2SV_blank>3<S2SV_blank>unsupported<S2SV_blank>values\" ) ; free ( name ) ; return MYSOFA_UNSUPPORTED_FORMAT ; } len = ( int ) readValue ( reader , 2 ) ; if ( len > 0x1000 || len < 0 ) { free ( name ) ; return MYSOFA_UNSUPPORTED_FORMAT ; } unknown = readValue ( reader , 6 ) ; if ( unknown == 0x000000020200 ) value = NULL ; else if ( unknown == 0x000000020000 ) { if ( ! ( value = malloc ( len + 1 ) ) ) { free ( name ) ; return MYSOFA_NO_MEMORY ; } if ( fread ( value , 1 , len , reader -> fhd ) != len ) { free ( value ) ; free ( name ) ; return MYSOFA_READ_ERROR ; } value [ len ] = 0 ; } else if ( unknown == 0x20000020000 ) { if ( ! ( value = malloc ( 5 ) ) ) { free ( name ) ; return MYSOFA_NO_MEMORY ; } strcpy ( value , \"\" ) ; } else { log ( \"FHDB<S2SV_blank>type<S2SV_blank>3<S2SV_blank>unsupported<S2SV_blank>values:<S2SV_blank>%12\" PRIX64 \"\\\\n\" , unknown ) ; free ( name ) ; return MYSOFA_OK ; } log ( \"<S2SV_blank>%s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , name , value ) ; attr = malloc ( sizeof ( struct MYSOFA_ATTRIBUTE ) ) ; attr -> name = name ; attr -> value = value ; attr -> next = dataobject -> attributes ; dataobject -> attributes = attr ; } else if ( typeandversion == 1 ) { unknown = readValue ( reader , 6 ) ; if ( unknown ) { log ( \"FHDB<S2SV_blank>type<S2SV_blank>1<S2SV_blank>unsupported<S2SV_blank>values\\\\n\" ) ; return MYSOFA_UNSUPPORTED_FORMAT ; } len = fgetc ( reader -> fhd ) ; if ( len < 0 ) return MYSOFA_READ_ERROR ; assert ( len < 0x100 ) ; if ( ! ( name = malloc ( len + 1 ) ) ) return MYSOFA_NO_MEMORY ; if ( fread ( name , 1 , len , reader -> fhd ) != len ) { free ( name ) ; return MYSOFA_READ_ERROR ; } name [ len ] = 0 ; heap_header_address = readValue ( reader , reader -> superblock . size_of_offsets ) ; log ( \"\\\\nfractal<S2SV_blank>head<S2SV_blank>type<S2SV_blank>1<S2SV_blank>length<S2SV_blank>%4\" PRIX64 \"<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>address<S2SV_blank>%\" PRIX64 \"\\\\n\" , length , name , heap_header_address ) ; dir = malloc ( sizeof ( struct DIR ) ) ; if ( ! dir ) { free ( name ) ; return MYSOFA_NO_MEMORY ; } memset ( dir , 0 , sizeof ( * dir ) ) ; dir -> next = dataobject -> directory ; dataobject -> directory = dir ; store = ftell ( reader -> fhd ) ; if ( fseek ( reader -> fhd , heap_header_address , SEEK_SET ) ) { free ( name ) ; return errno ; } err = dataobjectRead ( reader , & dir -> dataobject , name ) ; if ( err ) { return err ; } if ( store < 0 ) { return errno ; } if ( fseek ( reader -> fhd , store , SEEK_SET ) < 0 ) return errno ; } else if ( typeandversion != 0 ) { log ( \"fractal<S2SV_blank>head<S2SV_blank>unknown<S2SV_blank>type<S2SV_blank>%d\\\\n\" , typeandversion ) ; return MYSOFA_OK ; } } while ( typeandversion != 0 ) ; <S2SV_StartBug> return MYSOFA_OK ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( reader -> recursive_counter >= 10 ) return MYSOFA_INVALID_FORMAT ; else reader -> recursive_counter ++ ; if ( <S2SV_ModStart> ( \"%08\" PRIX64 \"<S2SV_blank>%.4s<S2SV_blank>stack<S2SV_blank>%d\\\\n\" <S2SV_ModEnd> , ( uint64_t <S2SV_ModStart> 4 , buf , reader -> recursive_counter <S2SV_ModStart> 0 ) ; reader -> recursive_counter -- ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12110\n\n```\nCWE-476 int upnp_redirect ( const char * rhost , unsigned short eport , const char * iaddr , unsigned short iport , const char * protocol , const char * desc , unsigned int leaseduration ) { int proto , r ; char iaddr_old [ 32 ] ; char rhost_old [ 32 ] ; unsigned short iport_old ; struct in_addr address ; unsigned int timestamp ; proto = proto_atoi ( protocol ) ; if ( inet_aton ( iaddr , & address ) <= 0 ) { syslog ( LOG_ERR , \"inet_aton(%s)<S2SV_blank>FAILED\" , iaddr ) ; return - 1 ; } if ( ! check_upnp_rule_against_permissions ( upnppermlist , num_upnpperm , eport , address , iport ) ) { syslog ( LOG_INFO , \"redirection<S2SV_blank>permission<S2SV_blank>check<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>\" \"%hu->%s:%hu<S2SV_blank>%s\" , eport , iaddr , iport , protocol ) ; return - 3 ; } <S2SV_StartBug> rhost_old [ 0 ] = '\\\\0' ; <S2SV_EndBug> r = get_redirect_rule ( ext_if_name , eport , proto , iaddr_old , sizeof ( iaddr_old ) , & iport_old , 0 , 0 , rhost_old , sizeof ( rhost_old ) , & timestamp , 0 , 0 ) ; if ( r == 0 ) { if ( strcmp ( iaddr , iaddr_old ) == 0 && ( ( rhost == NULL && rhost_old [ 0 ] == '\\\\0' ) || ( rhost && ( strcmp ( rhost , \"*\" ) == 0 ) && rhost_old [ 0 ] == '\\\\0' ) || ( rhost && ( strcmp ( rhost , rhost_old ) == 0 ) ) ) ) { syslog ( LOG_INFO , \"updating<S2SV_blank>existing<S2SV_blank>port<S2SV_blank>mapping<S2SV_blank>%hu<S2SV_blank>%s<S2SV_blank>(rhost<S2SV_blank>\\'%s\\')<S2SV_blank>=><S2SV_blank>%s:%hu\" , eport , protocol , rhost_old , iaddr_old , iport_old ) ; timestamp = ( leaseduration > 0 ) ? upnp_time ( ) + leaseduration : 0 ; if ( iport != iport_old ) { r = update_portmapping ( ext_if_name , eport , proto , iport , desc , timestamp ) ; } else { r = update_portmapping_desc_timestamp ( ext_if_name , eport , proto , desc , timestamp ) ; } # ifdef ENABLE_LEASEFILE if ( r == 0 ) { lease_file_remove ( eport , proto ) ; lease_file_add ( eport , iaddr , iport , proto , desc , timestamp ) ; } # endif return r ; } else { syslog ( LOG_INFO , \"port<S2SV_blank>%hu<S2SV_blank>%s<S2SV_blank>(rhost<S2SV_blank>\\'%s\\')<S2SV_blank>already<S2SV_blank>redirected<S2SV_blank>to<S2SV_blank>%s:%hu\" , eport , protocol , rhost_old , iaddr_old , iport_old ) ; return - 2 ; } # ifdef CHECK_PORTINUSE } else if ( port_in_use ( ext_if_name , eport , proto , iaddr , iport ) > 0 ) { syslog ( LOG_INFO , \"port<S2SV_blank>%hu<S2SV_blank>protocol<S2SV_blank>%s<S2SV_blank>already<S2SV_blank>in<S2SV_blank>use\" , eport , protocol ) ; return - 4 ; # endif } else { timestamp = ( leaseduration > 0 ) ? upnp_time ( ) + leaseduration : 0 ; syslog ( LOG_INFO , \"redirecting<S2SV_blank>port<S2SV_blank>%hu<S2SV_blank>to<S2SV_blank>%s:%hu<S2SV_blank>protocol<S2SV_blank>%s<S2SV_blank>for:<S2SV_blank>%s\" , eport , iaddr , iport , protocol , desc ) ; return upnp_redirect_internal ( rhost , eport , iaddr , iport , proto , desc , timestamp ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 3 ; } if ( desc == NULL ) desc = \"\" ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20406\n\n```\nCWE-190 static int <S2SV_StartBug> _PyMemoTable_ResizeTable ( PyMemoTable * self , Py_ssize_t min_size ) <S2SV_EndBug> { PyMemoEntry * oldtable = NULL ; PyMemoEntry * oldentry , * newentry ; <S2SV_StartBug> Py_ssize_t new_size = MT_MINSIZE ; <S2SV_EndBug> <S2SV_StartBug> Py_ssize_t to_process ; <S2SV_EndBug> assert ( min_size > 0 ) ; <S2SV_StartBug> while ( new_size < min_size && new_size > 0 ) <S2SV_EndBug> new_size <<= 1 ; if ( new_size <= 0 ) { PyErr_NoMemory ( ) ; return - 1 ; } assert ( ( new_size & ( new_size - 1 ) ) == 0 ) ; oldtable = self -> mt_table ; self -> mt_table = PyMem_NEW ( PyMemoEntry , new_size ) ; if ( self -> mt_table == NULL ) { self -> mt_table = oldtable ; PyErr_NoMemory ( ) ; return - 1 ; } self -> mt_allocated = new_size ; self -> mt_mask = new_size - 1 ; memset ( self -> mt_table , 0 , sizeof ( PyMemoEntry ) * new_size ) ; to_process = self -> mt_used ; for ( oldentry = oldtable ; to_process > 0 ; oldentry ++ ) { if ( oldentry -> me_key != NULL ) { to_process -- ; newentry = _PyMemoTable_Lookup ( self , oldentry -> me_key ) ; newentry -> me_key = oldentry -> me_key ; newentry -> me_value = oldentry -> me_value ; } } PyMem_FREE ( oldtable ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * self , size_t <S2SV_ModEnd> min_size ) { <S2SV_ModStart> * newentry ; size_t <S2SV_ModEnd> new_size = MT_MINSIZE <S2SV_ModStart> = MT_MINSIZE ; size_t <S2SV_ModEnd> to_process ; assert <S2SV_ModStart> 0 ) ; if ( min_size > PY_SSIZE_T_MAX ) { PyErr_NoMemory ( ) ; return - 1 ; } <S2SV_ModStart> new_size < min_size ) { new_size <<= <S2SV_ModEnd> 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7418\n\n```\nCWE-59 static int get_default_root ( pool * p , int allow_symlinks , char * * root ) { config_rec * c = NULL ; char * dir = NULL ; int res ; c = find_config ( main_server -> conf , CONF_PARAM , \"DefaultRoot\" , FALSE ) ; while ( c ) { pr_signals_handle ( ) ; if ( c -> argc < 2 ) { dir = c -> argv [ 0 ] ; break ; } res = pr_expr_eval_group_and ( ( ( char * * ) c -> argv ) + 1 ) ; if ( res ) { dir = c -> argv [ 0 ] ; break ; } c = find_config_next ( c , c -> next , CONF_PARAM , \"DefaultRoot\" , FALSE ) ; } if ( dir ) { char * new_dir ; new_dir = path_subst_uservar ( p , & dir ) ; if ( new_dir != NULL ) { dir = new_dir ; } if ( strncmp ( dir , \"/\" , 2 ) == 0 ) { dir = NULL ; } else { char * realdir ; int xerrno = 0 ; if ( allow_symlinks == FALSE ) { char * path , target_path [ PR_TUNABLE_PATH_MAX + 1 ] ; <S2SV_StartBug> struct stat st ; <S2SV_EndBug> size_t pathlen ; path = dir ; if ( * path != '/' ) { if ( * path == '~' ) { if ( pr_fs_interpolate ( dir , target_path , sizeof ( target_path ) - 1 ) < 0 ) { return - 1 ; } path = target_path ; } } pathlen = strlen ( path ) ; if ( pathlen > 1 && path [ pathlen - 1 ] == '/' ) { path [ pathlen - 1 ] = '\\\\0' ; } <S2SV_StartBug> pr_fs_clear_cache ( ) ; <S2SV_EndBug> res = pr_fsio_lstat ( path , & st ) ; if ( res < 0 ) { <S2SV_StartBug> xerrno = errno ; <S2SV_EndBug> <S2SV_StartBug> pr_log_pri ( PR_LOG_WARNING , \"error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>check<S2SV_blank>%s:<S2SV_blank>%s\" , path , <S2SV_EndBug> strerror ( xerrno ) ) ; errno = xerrno ; return - 1 ; } if ( S_ISLNK ( st . st_mode ) ) { pr_log_pri ( PR_LOG_WARNING , \"error:<S2SV_blank>DefaultRoot<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symlink<S2SV_blank>(denied<S2SV_blank>by<S2SV_blank>AllowChrootSymlinks<S2SV_blank>\" \"config)\" , path ) ; errno = EPERM ; return - 1 ; } } PRIVS_USER realdir = dir_realpath ( p , dir ) ; xerrno = errno ; PRIVS_RELINQUISH if ( realdir ) { dir = realdir ; } else { char interp_dir [ PR_TUNABLE_PATH_MAX + 1 ] ; memset ( interp_dir , '\\\\0' , sizeof ( interp_dir ) ) ; ( void ) pr_fs_interpolate ( dir , interp_dir , sizeof ( interp_dir ) - 1 ) ; pr_log_pri ( PR_LOG_NOTICE , \"notice:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>use<S2SV_blank>DefaultRoot<S2SV_blank>\\'%s\\'<S2SV_blank>[resolved<S2SV_blank>to<S2SV_blank>\\'%s\\']:<S2SV_blank>%s\" , dir , interp_dir , strerror ( xerrno ) ) ; errno = xerrno ; } } } * root = dir ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ] ; <S2SV_ModEnd> size_t pathlen ; <S2SV_ModStart> '\\\\0' ; } res = is_symlink_path ( p , path , pathlen <S2SV_ModEnd> ) ; if <S2SV_ModStart> 0 ) { if ( errno == EPERM ) { <S2SV_ModEnd> pr_log_pri ( PR_LOG_WARNING <S2SV_ModStart> ( PR_LOG_WARNING , \"error:<S2SV_blank>DefaultRoot<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symlink<S2SV_blank>\" \"(denied<S2SV_blank>by<S2SV_blank>AllowChrootSymlinks<S2SV_blank>config)\" , path ) ; } <S2SV_ModEnd> errno = EPERM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 static void prefetch_dec ( void ) <S2SV_StartBug> { <S2SV_EndBug> prefetch_table ( ( const void * ) & dec_tables , sizeof ( dec_tables ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { dec_tables . counter_head ++ ; dec_tables . counter_tail ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6978\n\n```\nCWE-415 void * gdImageWBMPPtr ( gdImagePtr im , int * size , int fg ) { void * rv ; gdIOCtx * out = gdNewDynamicCtx ( 2048 , NULL ) ; <S2SV_StartBug> gdImageWBMPCtx ( im , fg , out ) ; <S2SV_EndBug> <S2SV_StartBug> rv = gdDPExtractData ( out , size ) ; <S2SV_EndBug> out -> gd_free ( out ) ; return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; if ( ! _gdImageWBMPCtx <S2SV_ModEnd> ( im , <S2SV_ModStart> , out ) ) { <S2SV_ModEnd> rv = gdDPExtractData <S2SV_ModStart> size ) ; } else { rv = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14152\n\n```\nCWE-787 static void opj_j2k_set_cinema_parameters ( opj_cparameters_t * parameters , opj_image_t * image , opj_event_mgr_t * p_manager ) { int i ; parameters -> tile_size_on = OPJ_FALSE ; parameters -> cp_tdx = 1 ; parameters -> cp_tdy = 1 ; parameters -> tp_flag = 'C' ; parameters -> tp_on = 1 ; parameters -> cp_tx0 = 0 ; parameters -> cp_ty0 = 0 ; parameters -> image_offset_x0 = 0 ; parameters -> image_offset_y0 = 0 ; parameters -> cblockw_init = 32 ; parameters -> cblockh_init = 32 ; parameters -> mode = 0 ; parameters -> roi_compno = - 1 ; parameters -> subsampling_dx = 1 ; parameters -> subsampling_dy = 1 ; parameters -> irreversible = 1 ; if ( parameters -> tcp_numlayers > 1 ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"1<S2SV_blank>single<S2SV_blank>quality<S2SV_blank>layer\" \"-><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>layers<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1<S2SV_blank>(rather<S2SV_blank>than<S2SV_blank>%d)\\\\n\" \"-><S2SV_blank>Rate<S2SV_blank>of<S2SV_blank>the<S2SV_blank>last<S2SV_blank>layer<S2SV_blank>(%3.1f)<S2SV_blank>will<S2SV_blank>be<S2SV_blank>used\" , parameters -> tcp_numlayers , parameters -> tcp_rates [ parameters -> tcp_numlayers - 1 ] ) ; parameters -> tcp_rates [ 0 ] = parameters -> tcp_rates [ parameters -> tcp_numlayers - 1 ] ; parameters -> tcp_numlayers = 1 ; } switch ( parameters -> rsiz ) { case OPJ_PROFILE_CINEMA_2K : if ( parameters -> numresolution > 6 ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>(2k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank><=<S2SV_blank>5\\\\n\" \"-><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>5<S2SV_blank>(rather<S2SV_blank>than<S2SV_blank>%d)\\\\n\" , parameters -> numresolution + 1 ) ; parameters -> numresolution = 6 ; } break ; case OPJ_PROFILE_CINEMA_4K : if ( parameters -> numresolution < 2 ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-4<S2SV_blank>(4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>>=<S2SV_blank>1<S2SV_blank>&&<S2SV_blank><=<S2SV_blank>6\\\\n\" \"-><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1<S2SV_blank>(rather<S2SV_blank>than<S2SV_blank>%d)\\\\n\" , parameters -> numresolution + 1 ) ; parameters -> numresolution = 1 ; } else if ( parameters -> numresolution > 7 ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-4<S2SV_blank>(4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>>=<S2SV_blank>1<S2SV_blank>&&<S2SV_blank><=<S2SV_blank>6\\\\n\" \"-><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>decomposition<S2SV_blank>levels<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>6<S2SV_blank>(rather<S2SV_blank>than<S2SV_blank>%d)\\\\n\" , parameters -> numresolution + 1 ) ; parameters -> numresolution = 7 ; } break ; default : break ; } parameters -> csty |= 0x01 ; <S2SV_StartBug> parameters -> res_spec = parameters -> numresolution - 1 ; <S2SV_EndBug> for ( i = 0 ; i < parameters -> res_spec ; i ++ ) { parameters -> prcw_init [ i ] = 256 ; <S2SV_StartBug> parameters -> prch_init [ i ] = 256 ; <S2SV_EndBug> } parameters -> prog_order = OPJ_CPRL ; if ( parameters -> rsiz == OPJ_PROFILE_CINEMA_4K ) { parameters -> numpocs = ( OPJ_UINT32 ) opj_j2k_initialise_4K_poc ( parameters -> POC , parameters -> numresolution ) ; } else { parameters -> numpocs = 0 ; } parameters -> cp_disto_alloc = 1 ; if ( parameters -> max_cs_size <= 0 ) { parameters -> max_cs_size = OPJ_CINEMA_24_CS ; opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Maximum<S2SV_blank>1302083<S2SV_blank>compressed<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>24fps\\\\n\" \"As<S2SV_blank>no<S2SV_blank>rate<S2SV_blank>has<S2SV_blank>been<S2SV_blank>given,<S2SV_blank>this<S2SV_blank>limit<S2SV_blank>will<S2SV_blank>be<S2SV_blank>used.\\\\n\" ) ; } else if ( parameters -> max_cs_size > OPJ_CINEMA_24_CS ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Maximum<S2SV_blank>1302083<S2SV_blank>compressed<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>24fps\\\\n\" \"-><S2SV_blank>Specified<S2SV_blank>rate<S2SV_blank>exceeds<S2SV_blank>this<S2SV_blank>limit.<S2SV_blank>Rate<S2SV_blank>will<S2SV_blank>be<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1302083<S2SV_blank>bytes.\\\\n\" ) ; parameters -> max_cs_size = OPJ_CINEMA_24_CS ; } if ( parameters -> max_comp_size <= 0 ) { parameters -> max_comp_size = OPJ_CINEMA_24_COMP ; opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Maximum<S2SV_blank>1041666<S2SV_blank>compressed<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>24fps\\\\n\" \"As<S2SV_blank>no<S2SV_blank>rate<S2SV_blank>has<S2SV_blank>been<S2SV_blank>given,<S2SV_blank>this<S2SV_blank>limit<S2SV_blank>will<S2SV_blank>be<S2SV_blank>used.\\\\n\" ) ; } else if ( parameters -> max_comp_size > OPJ_CINEMA_24_COMP ) { opj_event_msg ( p_manager , EVT_WARNING , \"JPEG<S2SV_blank>2000<S2SV_blank>Profile-3<S2SV_blank>and<S2SV_blank>4<S2SV_blank>(2k/4k<S2SV_blank>dc<S2SV_blank>profile)<S2SV_blank>requires:\\\\n\" \"Maximum<S2SV_blank>1041666<S2SV_blank>compressed<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>24fps\\\\n\" \"-><S2SV_blank>Specified<S2SV_blank>rate<S2SV_blank>exceeds<S2SV_blank>this<S2SV_blank>limit.<S2SV_blank>Rate<S2SV_blank>will<S2SV_blank>be<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1041666<S2SV_blank>bytes.\\\\n\" ) ; parameters -> max_comp_size = OPJ_CINEMA_24_COMP ; } parameters -> tcp_rates [ 0 ] = ( OPJ_FLOAT32 ) ( image -> numcomps * image -> comps [ 0 ] . w * image -> comps [ 0 ] . h * image -> comps [ 0 ] . prec ) / ( OPJ_FLOAT32 ) ( ( ( OPJ_UINT32 ) parameters -> max_cs_size ) * 8 * image -> comps [ 0 ] . dx * image -> comps [ 0 ] . dy ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= 0x01 ; if ( parameters -> numresolution == 1 ) { parameters -> res_spec = 1 ; parameters -> prcw_init [ 0 ] = 128 ; parameters -> prch_init [ 0 ] = 128 ; } else { <S2SV_ModStart> = 256 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3222\n\n```\nCWE-200 int vcc_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct atm_vcc * vcc ; struct sk_buff * skb ; <S2SV_StartBug> int copied , error = - EINVAL ; <S2SV_EndBug> if ( sock -> state != SS_CONNECTED ) return - ENOTCONN ; if ( flags & ~ ( MSG_DONTWAIT | MSG_PEEK ) ) return - EOPNOTSUPP ; vcc = ATM_SD ( sock ) ; if ( test_bit ( ATM_VF_RELEASED , & vcc -> flags ) || test_bit ( ATM_VF_CLOSE , & vcc -> flags ) || ! test_bit ( ATM_VF_READY , & vcc -> flags ) ) return 0 ; skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & error ) ; if ( ! skb ) return error ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } error = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( error ) return error ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { pr_debug ( \"%d<S2SV_blank>-=<S2SV_blank>%d\\\\n\" , atomic_read ( & sk -> sk_rmem_alloc ) , skb -> truesize ) ; atm_return ( vcc , skb -> truesize ) ; } skb_free_datagram ( sk , skb ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = - EINVAL ; msg -> msg_namelen = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14763\n\n```\nCWE-189 static ssize_t f_hidg_write ( struct file * file , const char __user * buffer , size_t count , loff_t * offp ) { struct f_hidg * hidg = file -> private_data ; struct usb_request * req ; unsigned long flags ; ssize_t status = - ENOMEM ; if ( ! access_ok ( buffer , count ) ) return - EFAULT ; spin_lock_irqsave ( & hidg -> write_spinlock , flags ) ; # define WRITE_COND ( ! hidg -> write_pending ) try_again : while ( ! WRITE_COND ) { spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; if ( file -> f_flags & O_NONBLOCK ) return - EAGAIN ; if ( wait_event_interruptible_exclusive ( hidg -> write_queue , WRITE_COND ) ) return - ERESTARTSYS ; spin_lock_irqsave ( & hidg -> write_spinlock , flags ) ; } hidg -> write_pending = 1 ; req = hidg -> req ; count = min_t ( unsigned , count , hidg -> report_length ) ; spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; status = copy_from_user ( req -> buf , buffer , count ) ; if ( status != 0 ) { ERROR ( hidg -> func . config -> cdev , \"copy_from_user<S2SV_blank>error\\\\n\" ) ; status = - EINVAL ; goto release_write_pending ; } spin_lock_irqsave ( & hidg -> write_spinlock , flags ) ; if ( ! hidg -> req ) { free_ep_req ( hidg -> in_ep , req ) ; goto try_again ; } req -> status = 0 ; req -> zero = 0 ; req -> length = count ; req -> complete = f_hidg_req_complete ; req -> context = hidg ; <S2SV_StartBug> status = usb_ep_queue ( hidg -> in_ep , req , GFP_ATOMIC ) ; <S2SV_EndBug> if ( status < 0 ) { ERROR ( hidg -> func . config -> cdev , \"usb_ep_queue<S2SV_blank>error<S2SV_blank>on<S2SV_blank>int<S2SV_blank>endpoint<S2SV_blank>%zd\\\\n\" , status ) ; <S2SV_StartBug> goto release_write_pending_unlocked ; <S2SV_EndBug> } else { status = count ; } <S2SV_StartBug> spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; <S2SV_EndBug> return status ; release_write_pending : spin_lock_irqsave ( & hidg -> write_spinlock , flags ) ; <S2SV_StartBug> release_write_pending_unlocked : <S2SV_EndBug> hidg -> write_pending = 0 ; spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; wake_up ( & hidg -> write_queue ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = hidg ; spin_unlock_irqrestore ( & hidg -> write_spinlock , flags ) ; <S2SV_ModStart> ) ; goto release_write_pending <S2SV_ModEnd> ; } else <S2SV_ModStart> count ; } <S2SV_ModEnd> return status ; <S2SV_ModStart> flags ) ; <S2SV_ModEnd> hidg -> write_pending\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20892\n\n```\nCWE-415 static void usm_free_usmStateReference ( void * old ) { <S2SV_StartBug> struct usmStateReference * old_ref = ( struct usmStateReference * ) old ; <S2SV_EndBug> <S2SV_StartBug> if ( old_ref ) { <S2SV_EndBug> if ( old_ref -> usr_name_length ) SNMP_FREE ( old_ref -> usr_name ) ; <S2SV_StartBug> if ( old_ref -> usr_engine_id_length ) <S2SV_EndBug> SNMP_FREE ( old_ref -> usr_engine_id ) ; <S2SV_StartBug> if ( old_ref -> usr_auth_protocol_length ) <S2SV_EndBug> SNMP_FREE ( old_ref -> usr_auth_protocol ) ; <S2SV_StartBug> if ( old_ref -> usr_priv_protocol_length ) <S2SV_EndBug> SNMP_FREE ( old_ref -> usr_priv_protocol ) ; <S2SV_StartBug> if ( old_ref -> usr_auth_key_length && old_ref -> usr_auth_key ) { <S2SV_EndBug> <S2SV_StartBug> SNMP_ZERO ( old_ref -> usr_auth_key , old_ref -> usr_auth_key_length ) ; <S2SV_EndBug> <S2SV_StartBug> SNMP_FREE ( old_ref -> usr_auth_key ) ; <S2SV_EndBug> } <S2SV_StartBug> if ( old_ref -> usr_priv_key_length && old_ref -> usr_priv_key ) { <S2SV_EndBug> <S2SV_StartBug> SNMP_ZERO ( old_ref -> usr_priv_key , old_ref -> usr_priv_key_length ) ; <S2SV_EndBug> <S2SV_StartBug> SNMP_FREE ( old_ref -> usr_priv_key ) ; <S2SV_EndBug> } <S2SV_StartBug> SNMP_ZERO ( old_ref , sizeof ( * old_ref ) ) ; <S2SV_EndBug> SNMP_FREE ( old_ref ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct usmStateReference * ref = <S2SV_ModEnd> old ; if <S2SV_ModStart> ; if ( ! ref ) return ; if ( -- ref -> refcnt > 0 ) return ; SNMP_FREE ( ref <S2SV_ModEnd> -> usr_name ) <S2SV_ModStart> usr_name ) ; SNMP_FREE ( ref <S2SV_ModEnd> -> usr_engine_id ) <S2SV_ModStart> usr_engine_id ) ; SNMP_FREE ( ref <S2SV_ModEnd> -> usr_auth_protocol ) <S2SV_ModStart> usr_auth_protocol ) ; SNMP_FREE ( ref <S2SV_ModEnd> -> usr_priv_protocol ) <S2SV_ModStart> ; if ( ref <S2SV_ModEnd> -> usr_auth_key_length && <S2SV_ModStart> -> usr_auth_key_length && ref <S2SV_ModEnd> -> usr_auth_key ) <S2SV_ModStart> { SNMP_ZERO ( ref <S2SV_ModEnd> -> usr_auth_key , <S2SV_ModStart> -> usr_auth_key , ref <S2SV_ModEnd> -> usr_auth_key_length ) <S2SV_ModStart> ; SNMP_FREE ( ref <S2SV_ModEnd> -> usr_auth_key ) <S2SV_ModStart> } if ( ref <S2SV_ModEnd> -> usr_priv_key_length && <S2SV_ModStart> -> usr_priv_key_length && ref <S2SV_ModEnd> -> usr_priv_key ) <S2SV_ModStart> { SNMP_ZERO ( ref <S2SV_ModEnd> -> usr_priv_key , <S2SV_ModStart> -> usr_priv_key , ref <S2SV_ModEnd> -> usr_priv_key_length ) <S2SV_ModStart> ; SNMP_FREE ( ref <S2SV_ModEnd> -> usr_priv_key ) <S2SV_ModStart> ) ; } SNMP_FREE ( ref <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3185\n\n```\nCWE-119 static void command_port_read_callback ( struct urb * urb ) { struct usb_serial_port * command_port = urb -> context ; struct whiteheat_command_private * command_info ; int status = urb -> status ; unsigned char * data = urb -> transfer_buffer ; int result ; command_info = usb_get_serial_port_data ( command_port ) ; if ( ! command_info ) { dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>command_info<S2SV_blank>is<S2SV_blank>NULL,<S2SV_blank>exiting.\\\\n\" , __func__ ) ; return ; } <S2SV_StartBug> if ( status ) { <S2SV_EndBug> dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>nonzero<S2SV_blank>urb<S2SV_blank>status:<S2SV_blank>%d\\\\n\" , __func__ , status ) ; if ( status != - ENOENT ) command_info -> command_finished = WHITEHEAT_CMD_FAILURE ; wake_up ( & command_info -> wait_command ) ; return ; } usb_serial_debug_data ( & command_port -> dev , __func__ , urb -> actual_length , data ) ; if ( data [ 0 ] == WHITEHEAT_CMD_COMPLETE ) { command_info -> command_finished = WHITEHEAT_CMD_COMPLETE ; wake_up ( & command_info -> wait_command ) ; } else if ( data [ 0 ] == WHITEHEAT_CMD_FAILURE ) { command_info -> command_finished = WHITEHEAT_CMD_FAILURE ; wake_up ( & command_info -> wait_command ) ; } else if ( data [ 0 ] == WHITEHEAT_EVENT ) { dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>event<S2SV_blank>received\\\\n\" , __func__ ) ; <S2SV_StartBug> } else if ( data [ 0 ] == WHITEHEAT_GET_DTR_RTS ) { <S2SV_EndBug> memcpy ( command_info -> result_buffer , & data [ 1 ] , <S2SV_StartBug> urb -> actual_length - 1 ) ; <S2SV_EndBug> command_info -> command_finished = WHITEHEAT_CMD_COMPLETE ; wake_up ( & command_info -> wait_command ) ; } else dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>bad<S2SV_blank>reply<S2SV_blank>from<S2SV_blank>firmware\\\\n\" , __func__ ) ; result = usb_submit_urb ( command_port -> read_urb , GFP_ATOMIC ) ; if ( result ) dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>failed<S2SV_blank>resubmitting<S2SV_blank>read<S2SV_blank>urb,<S2SV_blank>error<S2SV_blank>%d\\\\n\" , __func__ , result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ! urb -> actual_length ) { dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>empty<S2SV_blank>response,<S2SV_blank>exiting.\\\\n\" , __func__ ) ; return ; } if ( <S2SV_ModStart> else if ( ( <S2SV_ModStart> == WHITEHEAT_GET_DTR_RTS ) && ( <S2SV_ModEnd> urb -> actual_length <S2SV_ModStart> actual_length - 1 <= sizeof ( command_info -> result_buffer ) ) ) { memcpy ( command_info -> result_buffer , & data [ 1 ] , urb -> actual_length - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 <S2SV_StartBug> void ptrace_triggered ( struct perf_event * bp , int nmi , <S2SV_EndBug> struct perf_sample_data * data , struct pt_regs * regs ) { struct perf_event_attr attr ; attr = bp -> attr ; attr . disabled = true ; modify_user_hw_breakpoint ( bp , & attr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event * bp <S2SV_ModEnd> , struct perf_sample_data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15274\n\n```\nCWE-476 SYSCALL_DEFINE5 ( add_key , const char __user * , _type , const char __user * , _description , const void __user * , _payload , size_t , plen , key_serial_t , ringid ) { key_ref_t keyring_ref , key_ref ; char type [ 32 ] , * description ; void * payload ; long ret ; ret = - EINVAL ; if ( plen > 1024 * 1024 - 1 ) goto error ; ret = key_get_type_from_user ( type , _type , sizeof ( type ) ) ; if ( ret < 0 ) goto error ; description = NULL ; if ( _description ) { description = strndup_user ( _description , KEY_MAX_DESC_SIZE ) ; if ( IS_ERR ( description ) ) { ret = PTR_ERR ( description ) ; goto error ; } if ( ! * description ) { kfree ( description ) ; description = NULL ; } else if ( ( description [ 0 ] == '.' ) && ( strncmp ( type , \"keyring\" , 7 ) == 0 ) ) { ret = - EPERM ; goto error2 ; } } payload = NULL ; <S2SV_StartBug> if ( _payload ) { <S2SV_EndBug> ret = - ENOMEM ; payload = kvmalloc ( plen , GFP_KERNEL ) ; if ( ! payload ) goto error2 ; ret = - EFAULT ; if ( copy_from_user ( payload , _payload , plen ) != 0 ) goto error3 ; } keyring_ref = lookup_user_key ( ringid , KEY_LOOKUP_CREATE , KEY_NEED_WRITE ) ; if ( IS_ERR ( keyring_ref ) ) { ret = PTR_ERR ( keyring_ref ) ; goto error3 ; } key_ref = key_create_or_update ( keyring_ref , type , description , payload , plen , KEY_PERM_UNDEF , KEY_ALLOC_IN_QUOTA ) ; if ( ! IS_ERR ( key_ref ) ) { ret = key_ref_to_ptr ( key_ref ) -> serial ; key_ref_put ( key_ref ) ; } else { ret = PTR_ERR ( key_ref ) ; } key_ref_put ( keyring_ref ) ; error3 : kvfree ( payload ) ; error2 : kfree ( description ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( plen <S2SV_ModEnd> ) { ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void save_context ( VP9_COMP * cpi , int mi_row , int mi_col , <S2SV_EndBug> ENTROPY_CONTEXT a [ 16 * MAX_MB_PLANE ] , ENTROPY_CONTEXT l [ 16 * MAX_MB_PLANE ] , PARTITION_CONTEXT sa [ 8 ] , PARTITION_CONTEXT sl [ 8 ] , BLOCK_SIZE bsize ) { <S2SV_StartBug> const MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> const MACROBLOCKD * const xd = & x -> e_mbd ; int p ; const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup [ bsize ] ; const int num_4x4_blocks_high = num_4x4_blocks_high_lookup [ bsize ] ; int mi_width = num_8x8_blocks_wide_lookup [ bsize ] ; int mi_height = num_8x8_blocks_high_lookup [ bsize ] ; for ( p = 0 ; p < MAX_MB_PLANE ; ++ p ) { <S2SV_StartBug> vpx_memcpy ( <S2SV_EndBug> a + num_4x4_blocks_wide * p , xd -> above_context [ p ] + ( mi_col * 2 >> xd -> plane [ p ] . subsampling_x ) , ( sizeof ( ENTROPY_CONTEXT ) * num_4x4_blocks_wide ) >> xd -> plane [ p ] . subsampling_x ) ; <S2SV_StartBug> vpx_memcpy ( <S2SV_EndBug> l + num_4x4_blocks_high * p , xd -> left_context [ p ] + ( ( mi_row & MI_MASK ) * 2 >> xd -> plane [ p ] . subsampling_y ) , ( sizeof ( ENTROPY_CONTEXT ) * num_4x4_blocks_high ) >> xd -> plane [ p ] . subsampling_y ) ; } <S2SV_StartBug> vpx_memcpy ( sa , xd -> above_seg_context + mi_col , <S2SV_EndBug> sizeof ( * xd -> above_seg_context ) * mi_width ) ; <S2SV_StartBug> vpx_memcpy ( sl , xd -> left_seg_context + ( mi_row & MI_MASK ) , <S2SV_EndBug> sizeof ( xd -> left_seg_context [ 0 ] ) * mi_height ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void save_context ( MACROBLOCK * const x <S2SV_ModEnd> , int mi_row <S2SV_ModStart> ) { const <S2SV_ModEnd> MACROBLOCKD * const <S2SV_ModStart> p ) { memcpy <S2SV_ModEnd> ( a + <S2SV_ModStart> subsampling_x ) ; memcpy <S2SV_ModEnd> ( l + <S2SV_ModStart> ) ; } memcpy <S2SV_ModEnd> ( sa , <S2SV_ModStart> mi_width ) ; memcpy <S2SV_ModEnd> ( sl ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15166\n\n```\nCWE-20 static int lmp_print_data_link_subobjs ( netdissect_options * ndo , const u_char * obj_tptr , int total_subobj_len , int offset ) { int hexdump = FALSE ; int subobj_type , subobj_len ; union { float f ; uint32_t i ; } bw ; while ( total_subobj_len > 0 && hexdump == FALSE ) { <S2SV_StartBug> subobj_type = EXTRACT_8BITS ( obj_tptr + offset ) ; <S2SV_EndBug> subobj_len = EXTRACT_8BITS ( obj_tptr + offset + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Subobject,<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Length:<S2SV_blank>%u\" , tok2str ( lmp_data_link_subobj , \"Unknown\" , subobj_type ) , subobj_type , subobj_len ) ) ; if ( subobj_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short)\" ) ) ; break ; } if ( ( subobj_len % 4 ) != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4)\" ) ) ; break ; } if ( total_subobj_len < subobj_len ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(goes<S2SV_blank>past<S2SV_blank>the<S2SV_blank>end<S2SV_blank>of<S2SV_blank>the<S2SV_blank>object)\" ) ) ; break ; } switch ( subobj_type ) { case INT_SWITCHING_TYPE_SUBOBJ : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Switching<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , <S2SV_EndBug> tok2str ( gmpls_switch_cap_values , \"Unknown\" , EXTRACT_8BITS ( obj_tptr + offset + 2 ) ) , <S2SV_StartBug> EXTRACT_8BITS ( obj_tptr + offset + 2 ) ) ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Encoding<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( gmpls_encoding_values , \"Unknown\" , EXTRACT_8BITS ( obj_tptr + offset + 3 ) ) , EXTRACT_8BITS ( obj_tptr + offset + 3 ) ) ) ; ND_TCHECK_32BITS ( obj_tptr + offset + 4 ) ; bw . i = EXTRACT_32BITS ( obj_tptr + offset + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Min<S2SV_blank>Reservable<S2SV_blank>Bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; <S2SV_StartBug> bw . i = EXTRACT_32BITS ( obj_tptr + offset + 8 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Max<S2SV_blank>Reservable<S2SV_blank>Bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case WAVELENGTH_SUBOBJ : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Wavelength:<S2SV_blank>%u\" , <S2SV_EndBug> EXTRACT_32BITS ( obj_tptr + offset + 4 ) ) ) ; break ; default : hexdump = TRUE ; break ; } total_subobj_len -= subobj_len ; offset += subobj_len ; } return ( hexdump ) ; trunc : return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FALSE ) { ND_TCHECK_16BITS ( obj_tptr + offset ) ; <S2SV_ModStart> case INT_SWITCHING_TYPE_SUBOBJ : ND_TCHECK_8BITS ( obj_tptr + offset + 2 ) ; <S2SV_ModStart> 2 ) ) ) ; ND_TCHECK_8BITS ( obj_tptr + offset + 3 <S2SV_ModStart> ) ) ; ND_TCHECK_32BITS ( obj_tptr + offset + 8 ) ; <S2SV_ModStart> case WAVELENGTH_SUBOBJ : ND_TCHECK_32BITS ( obj_tptr + offset + 4 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11399\n\n```\nCWE-125 static int ape_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame_ptr , AVPacket * avpkt ) { AVFrame * frame = data ; const uint8_t * buf = avpkt -> data ; APEContext * s = avctx -> priv_data ; uint8_t * sample8 ; int16_t * sample16 ; int32_t * sample24 ; int i , ch , ret ; <S2SV_StartBug> int blockstodecode ; <S2SV_EndBug> av_assert0 ( s -> samples >= 0 ) ; if ( ! s -> samples ) { uint32_t nblocks , offset ; int buf_size ; if ( ! avpkt -> size ) { * got_frame_ptr = 0 ; return 0 ; } if ( avpkt -> size < 8 ) { av_log ( avctx , AV_LOG_ERROR , \"Packet<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\\\\n\" ) ; return AVERROR_INVALIDDATA ; } buf_size = avpkt -> size & ~ 3 ; if ( buf_size != avpkt -> size ) { av_log ( avctx , AV_LOG_WARNING , \"packet<S2SV_blank>size<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4.<S2SV_blank>\" \"extra<S2SV_blank>bytes<S2SV_blank>at<S2SV_blank>the<S2SV_blank>end<S2SV_blank>will<S2SV_blank>be<S2SV_blank>skipped.\\\\n\" ) ; } if ( s -> fileversion < 3950 ) buf_size += 2 ; av_fast_padded_malloc ( & s -> data , & s -> data_size , buf_size ) ; if ( ! s -> data ) return AVERROR ( ENOMEM ) ; s -> bdsp . bswap_buf ( ( uint32_t * ) s -> data , ( const uint32_t * ) buf , buf_size >> 2 ) ; memset ( s -> data + ( buf_size & ~ 3 ) , 0 , buf_size & 3 ) ; s -> ptr = s -> data ; s -> data_end = s -> data + buf_size ; nblocks = bytestream_get_be32 ( & s -> ptr ) ; offset = bytestream_get_be32 ( & s -> ptr ) ; if ( s -> fileversion >= 3900 ) { if ( offset > 3 ) { av_log ( avctx , AV_LOG_ERROR , \"Incorrect<S2SV_blank>offset<S2SV_blank>passed\\\\n\" ) ; s -> data = NULL ; return AVERROR_INVALIDDATA ; } if ( s -> data_end - s -> ptr < offset ) { av_log ( avctx , AV_LOG_ERROR , \"Packet<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> ptr += offset ; } else { if ( ( ret = init_get_bits8 ( & s -> gb , s -> ptr , s -> data_end - s -> ptr ) ) < 0 ) return ret ; if ( s -> fileversion > 3800 ) skip_bits_long ( & s -> gb , offset * 8 ) ; else skip_bits_long ( & s -> gb , offset ) ; } <S2SV_StartBug> if ( ! nblocks || nblocks > INT_MAX ) { <S2SV_EndBug> av_log ( avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>sample<S2SV_blank>count:<S2SV_blank>%\" PRIu32 \".\\\\n\" , nblocks ) ; return AVERROR_INVALIDDATA ; } if ( init_frame_decoder ( s ) < 0 ) { av_log ( avctx , AV_LOG_ERROR , \"Error<S2SV_blank>reading<S2SV_blank>frame<S2SV_blank>header\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> samples = nblocks ; } if ( ! s -> data ) { * got_frame_ptr = 0 ; return avpkt -> size ; } blockstodecode = FFMIN ( s -> blocks_per_loop , s -> samples ) ; if ( s -> fileversion < 3930 ) blockstodecode = s -> samples ; <S2SV_StartBug> av_fast_malloc ( & s -> decoded_buffer , & s -> decoded_size , <S2SV_EndBug> <S2SV_StartBug> 2 * FFALIGN ( blockstodecode , 8 ) * sizeof ( * s -> decoded_buffer ) ) ; <S2SV_EndBug> if ( ! s -> decoded_buffer ) return AVERROR ( ENOMEM ) ; memset ( s -> decoded_buffer , 0 , s -> decoded_size ) ; s -> decoded [ 0 ] = s -> decoded_buffer ; s -> decoded [ 1 ] = s -> decoded_buffer + FFALIGN ( blockstodecode , 8 ) ; frame -> nb_samples = blockstodecode ; if ( ( ret = ff_get_buffer ( avctx , frame , 0 ) ) < 0 ) return ret ; s -> error = 0 ; if ( ( s -> channels == 1 ) || ( s -> frameflags & APE_FRAMECODE_PSEUDO_STEREO ) ) ape_unpack_mono ( s , blockstodecode ) ; else ape_unpack_stereo ( s , blockstodecode ) ; emms_c ( ) ; if ( s -> error ) { s -> samples = 0 ; av_log ( avctx , AV_LOG_ERROR , \"Error<S2SV_blank>decoding<S2SV_blank>frame\\\\n\" ) ; return AVERROR_INVALIDDATA ; } switch ( s -> bps ) { case 8 : for ( ch = 0 ; ch < s -> channels ; ch ++ ) { sample8 = ( uint8_t * ) frame -> data [ ch ] ; for ( i = 0 ; i < blockstodecode ; i ++ ) * sample8 ++ = ( s -> decoded [ ch ] [ i ] + 0x80 ) & 0xff ; } break ; case 16 : for ( ch = 0 ; ch < s -> channels ; ch ++ ) { sample16 = ( int16_t * ) frame -> data [ ch ] ; for ( i = 0 ; i < blockstodecode ; i ++ ) * sample16 ++ = s -> decoded [ ch ] [ i ] ; } break ; case 24 : for ( ch = 0 ; ch < s -> channels ; ch ++ ) { sample24 = ( int32_t * ) frame -> data [ ch ] ; for ( i = 0 ; i < blockstodecode ; i ++ ) * sample24 ++ = s -> decoded [ ch ] [ i ] << 8 ; } break ; } s -> samples -= blockstodecode ; * got_frame_ptr = 1 ; return ! s -> samples ? avpkt -> size : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int blockstodecode ; uint64_t decoded_buffer_size <S2SV_ModStart> nblocks > INT_MAX / 2 / sizeof ( * s -> decoded_buffer ) - 8 <S2SV_ModStart> -> samples ; decoded_buffer_size = 2LL * FFALIGN ( blockstodecode , 8 ) * sizeof ( * s -> decoded_buffer ) ; av_assert0 ( decoded_buffer_size <= INT_MAX ) ; <S2SV_ModStart> -> decoded_size , decoded_buffer_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static BLOCK_SIZE get_rd_var_based_fixed_partition ( VP9_COMP * cpi , <S2SV_EndBug> int mi_row , int mi_col ) { <S2SV_StartBug> unsigned int var = get_sby_perpixel_diff_variance ( cpi , & cpi -> mb , <S2SV_EndBug> mi_row , mi_col , BLOCK_64X64 ) ; if ( var < 8 ) return BLOCK_64X64 ; else if ( var < 128 ) return BLOCK_32X32 ; else if ( var < 2048 ) return BLOCK_16X16 ; else return BLOCK_8X8 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VP9_COMP * cpi , MACROBLOCK * x <S2SV_ModStart> cpi , & x -> plane [ 0 ] . src <S2SV_ModEnd> , mi_row ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3364\n\n```\nCWE-119 static __u8 * nci_extract_rf_params_nfca_passive_poll ( struct nci_dev * ndev , struct rf_tech_specific_params_nfca_poll * nfca_poll , __u8 * data ) { nfca_poll -> sens_res = __le16_to_cpu ( * ( ( __u16 * ) data ) ) ; data += 2 ; <S2SV_StartBug> nfca_poll -> nfcid1_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"sens_res<S2SV_blank>0x%x,<S2SV_blank>nfcid1_len<S2SV_blank>%d\\\\n\" , nfca_poll -> sens_res , nfca_poll -> nfcid1_len ) ; memcpy ( nfca_poll -> nfcid1 , data , nfca_poll -> nfcid1_len ) ; data += nfca_poll -> nfcid1_len ; nfca_poll -> sel_res_len = * data ++ ; if ( nfca_poll -> sel_res_len != 0 ) nfca_poll -> sel_res = * data ++ ; pr_debug ( \"sel_res_len<S2SV_blank>%d,<S2SV_blank>sel_res<S2SV_blank>0x%x\\\\n\" , nfca_poll -> sel_res_len , nfca_poll -> sel_res ) ; return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> nfcid1_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , NFC_NFCID1_MAXSIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7020\n\n```\nCWE-119 static int read_header ( FFV1Context * f ) { uint8_t state [ CONTEXT_SIZE ] ; int i , j , context_count = - 1 ; RangeCoder * const c = & f -> slice_context [ 0 ] -> c ; memset ( state , 128 , sizeof ( state ) ) ; if ( f -> version < 2 ) { <S2SV_StartBug> int chroma_planes , chroma_h_shift , chroma_v_shift , transparency ; <S2SV_EndBug> unsigned v = get_symbol ( c , state , 0 ) ; if ( v >= 2 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>ver01<S2SV_blank>header\\\\n\" , v ) ; return AVERROR_INVALIDDATA ; } f -> version = v ; f -> ac = f -> avctx -> coder_type = get_symbol ( c , state , 0 ) ; if ( f -> ac > 1 ) { for ( i = 1 ; i < 256 ; i ++ ) f -> state_transition [ i ] = get_symbol ( c , state , 1 ) + c -> one_state [ i ] ; } <S2SV_StartBug> f -> colorspace = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( f -> version > 0 ) <S2SV_EndBug> <S2SV_StartBug> f -> avctx -> bits_per_raw_sample = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> chroma_planes = get_rac ( c , state ) ; <S2SV_EndBug> <S2SV_StartBug> chroma_h_shift = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> chroma_v_shift = get_symbol ( c , state , 0 ) ; transparency = get_rac ( c , state ) ; if ( f -> plane_count ) { <S2SV_StartBug> if ( chroma_planes != f -> chroma_planes <S2SV_EndBug> || chroma_h_shift != f -> chroma_h_shift || chroma_v_shift != f -> chroma_v_shift || transparency != f -> transparency ) { av_log ( f -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>change<S2SV_blank>of<S2SV_blank>global<S2SV_blank>parameters\\\\n\" ) ; return AVERROR_INVALIDDATA ; } <S2SV_StartBug> } <S2SV_EndBug> f -> chroma_planes = chroma_planes ; f -> chroma_h_shift = chroma_h_shift ; f -> chroma_v_shift = chroma_v_shift ; f -> transparency = transparency ; f -> plane_count = 2 + f -> transparency ; } if ( f -> colorspace == 0 ) { if ( ! f -> transparency && ! f -> chroma_planes ) { if ( f -> avctx -> bits_per_raw_sample <= 8 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GRAY8 ; else f -> avctx -> pix_fmt = AV_PIX_FMT_GRAY16 ; } else if ( f -> avctx -> bits_per_raw_sample <= 8 && ! f -> transparency ) { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P ; break ; case 0x01 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV440P ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P ; break ; case 0x20 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV411P ; break ; case 0x22 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV410P ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample <= 8 && f -> transparency ) { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA444P ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA422P ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA420P ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample == 9 ) { f -> packed_at_lsb = 1 ; switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P9 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P9 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P9 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample == 10 ) { f -> packed_at_lsb = 1 ; switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P10 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P10 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P10 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P16 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P16 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P16 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } } else if ( f -> colorspace == 1 ) { if ( f -> chroma_h_shift || f -> chroma_v_shift ) { av_log ( f -> avctx , AV_LOG_ERROR , \"chroma<S2SV_blank>subsampling<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>this<S2SV_blank>colorspace\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } if ( f -> avctx -> bits_per_raw_sample == 9 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP9 ; else if ( f -> avctx -> bits_per_raw_sample == 10 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP10 ; else if ( f -> avctx -> bits_per_raw_sample == 12 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP12 ; else if ( f -> avctx -> bits_per_raw_sample == 14 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP14 ; else if ( f -> transparency ) f -> avctx -> pix_fmt = AV_PIX_FMT_RGB32 ; else f -> avctx -> pix_fmt = AV_PIX_FMT_0RGB32 ; } else { av_log ( f -> avctx , AV_LOG_ERROR , \"colorspace<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } av_dlog ( f -> avctx , \"%d<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , f -> chroma_h_shift , f -> chroma_v_shift , f -> avctx -> pix_fmt ) ; if ( f -> version < 2 ) { context_count = read_quant_tables ( c , f -> quant_table ) ; if ( context_count < 0 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"read_quant_table<S2SV_blank>error\\\\n\" ) ; return AVERROR_INVALIDDATA ; } } else if ( f -> version < 3 ) { f -> slice_count = get_symbol ( c , state , 0 ) ; } else { const uint8_t * p = c -> bytestream_end ; for ( f -> slice_count = 0 ; f -> slice_count < MAX_SLICES && 3 < p - c -> bytestream_start ; f -> slice_count ++ ) { int trailer = 3 + 5 * ! ! f -> ec ; int size = AV_RB24 ( p - trailer ) ; if ( size + trailer > p - c -> bytestream_start ) break ; p -= size + trailer ; } } if ( f -> slice_count > ( unsigned ) MAX_SLICES || f -> slice_count <= 0 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"slice<S2SV_blank>count<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\\\\n\" , f -> slice_count ) ; return AVERROR_INVALIDDATA ; } for ( j = 0 ; j < f -> slice_count ; j ++ ) { FFV1Context * fs = f -> slice_context [ j ] ; fs -> ac = f -> ac ; fs -> packed_at_lsb = f -> packed_at_lsb ; fs -> slice_damaged = 0 ; if ( f -> version == 2 ) { fs -> slice_x = get_symbol ( c , state , 0 ) * f -> width ; fs -> slice_y = get_symbol ( c , state , 0 ) * f -> height ; fs -> slice_width = ( get_symbol ( c , state , 0 ) + 1 ) * f -> width + fs -> slice_x ; fs -> slice_height = ( get_symbol ( c , state , 0 ) + 1 ) * f -> height + fs -> slice_y ; fs -> slice_x /= f -> num_h_slices ; fs -> slice_y /= f -> num_v_slices ; fs -> slice_width = fs -> slice_width / f -> num_h_slices - fs -> slice_x ; fs -> slice_height = fs -> slice_height / f -> num_v_slices - fs -> slice_y ; if ( ( unsigned ) fs -> slice_width > f -> width || ( unsigned ) fs -> slice_height > f -> height ) return AVERROR_INVALIDDATA ; if ( ( unsigned ) fs -> slice_x + ( uint64_t ) fs -> slice_width > f -> width || ( unsigned ) fs -> slice_y + ( uint64_t ) fs -> slice_height > f -> height ) return AVERROR_INVALIDDATA ; } for ( i = 0 ; i < f -> plane_count ; i ++ ) { PlaneContext * const p = & fs -> plane [ i ] ; if ( f -> version == 2 ) { int idx = get_symbol ( c , state , 0 ) ; if ( idx > ( unsigned ) f -> quant_table_count ) { av_log ( f -> avctx , AV_LOG_ERROR , \"quant_table_index<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" ) ; return AVERROR_INVALIDDATA ; } p -> quant_table_index = idx ; memcpy ( p -> quant_table , f -> quant_tables [ idx ] , sizeof ( p -> quant_table ) ) ; context_count = f -> context_count [ idx ] ; } else { memcpy ( p -> quant_table , f -> quant_table , sizeof ( p -> quant_table ) ) ; } if ( f -> version <= 2 ) { av_assert0 ( context_count >= 0 ) ; if ( p -> context_count < context_count ) { av_freep ( & p -> state ) ; av_freep ( & p -> vlc_state ) ; } p -> context_count = context_count ; } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> chroma_v_shift , transparency , colorspace , bits_per_raw_sample <S2SV_ModStart> ] ; } <S2SV_ModEnd> colorspace = get_symbol <S2SV_ModStart> 0 ) ; bits_per_raw_sample = <S2SV_ModEnd> f -> version <S2SV_ModStart> version > 0 ? get_symbol ( c , state , 0 ) : <S2SV_ModEnd> f -> avctx <S2SV_ModStart> avctx -> bits_per_raw_sample ; chroma_planes = get_rac ( c , state ) ; chroma_h_shift <S2SV_ModStart> 0 ) ; chroma_v_shift = get_symbol ( c , state , 0 ) ; transparency <S2SV_ModEnd> = get_rac ( <S2SV_ModStart> state ) ; <S2SV_ModEnd> if ( f <S2SV_ModStart> { if ( colorspace != f -> colorspace || bits_per_raw_sample != f -> avctx -> bits_per_raw_sample || <S2SV_ModStart> ; } } f -> colorspace = colorspace ; f -> avctx -> bits_per_raw_sample = bits_per_raw_sample ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13304\n\n```\nCWE-617 int ff_h263_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { const uint8_t * buf = avpkt -> data ; int buf_size = avpkt -> size ; MpegEncContext * s = avctx -> priv_data ; int ret ; int slice_ret = 0 ; AVFrame * pict = data ; if ( buf_size == 0 ) { if ( s -> low_delay == 0 && s -> next_picture_ptr ) { if ( ( ret = av_frame_ref ( pict , s -> next_picture_ptr -> f ) ) < 0 ) return ret ; s -> next_picture_ptr = NULL ; * got_frame = 1 ; } return 0 ; } if ( s -> avctx -> flags & AV_CODEC_FLAG_TRUNCATED ) { int next ; if ( CONFIG_MPEG4_DECODER && s -> codec_id == AV_CODEC_ID_MPEG4 ) { next = ff_mpeg4_find_frame_end ( & s -> parse_context , buf , buf_size ) ; } else if ( CONFIG_H263_DECODER && s -> codec_id == AV_CODEC_ID_H263 ) { next = ff_h263_find_frame_end ( & s -> parse_context , buf , buf_size ) ; } else if ( CONFIG_H263P_DECODER && s -> codec_id == AV_CODEC_ID_H263P ) { next = ff_h263_find_frame_end ( & s -> parse_context , buf , buf_size ) ; } else { av_log ( s -> avctx , AV_LOG_ERROR , \"this<S2SV_blank>codec<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>truncated<S2SV_blank>bitstreams\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } if ( ff_combine_frame ( & s -> parse_context , next , ( const uint8_t * * ) & buf , & buf_size ) < 0 ) return buf_size ; } retry : if ( s -> divx_packed && s -> bitstream_buffer_size ) { int i ; for ( i = 0 ; i < buf_size - 3 ; i ++ ) { if ( buf [ i ] == 0 && buf [ i + 1 ] == 0 && buf [ i + 2 ] == 1 ) { if ( buf [ i + 3 ] == 0xB0 ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Discarding<S2SV_blank>excessive<S2SV_blank>bitstream<S2SV_blank>in<S2SV_blank>packed<S2SV_blank>xvid\\\\n\" ) ; s -> bitstream_buffer_size = 0 ; } break ; } } } if ( s -> bitstream_buffer_size && ( s -> divx_packed || buf_size <= MAX_NVOP_SIZE ) ) ret = init_get_bits8 ( & s -> gb , s -> bitstream_buffer , s -> bitstream_buffer_size ) ; else ret = init_get_bits8 ( & s -> gb , buf , buf_size ) ; s -> bitstream_buffer_size = 0 ; if ( ret < 0 ) return ret ; if ( ! s -> context_initialized ) ff_mpv_idct_init ( s ) ; if ( CONFIG_WMV2_DECODER && s -> msmpeg4_version == 5 ) { ret = ff_wmv2_decode_picture_header ( s ) ; } else if ( CONFIG_MSMPEG4_DECODER && s -> msmpeg4_version ) { ret = ff_msmpeg4_decode_picture_header ( s ) ; } else if ( CONFIG_MPEG4_DECODER && avctx -> codec_id == AV_CODEC_ID_MPEG4 ) { if ( s -> avctx -> extradata_size && s -> picture_number == 0 ) { GetBitContext gb ; if ( init_get_bits8 ( & gb , s -> avctx -> extradata , s -> avctx -> extradata_size ) >= 0 ) ff_mpeg4_decode_picture_header ( avctx -> priv_data , & gb ) ; } ret = ff_mpeg4_decode_picture_header ( avctx -> priv_data , & s -> gb ) ; } else if ( CONFIG_H263I_DECODER && s -> codec_id == AV_CODEC_ID_H263I ) { ret = ff_intel_h263_decode_picture_header ( s ) ; } else if ( CONFIG_FLV_DECODER && s -> h263_flv ) { ret = ff_flv_decode_picture_header ( s ) ; } else { ret = ff_h263_decode_picture_header ( s ) ; } if ( ret < 0 || ret == FRAME_SKIPPED ) { if ( s -> width != avctx -> coded_width || s -> height != avctx -> coded_height ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Reverting<S2SV_blank>picture<S2SV_blank>dimensions<S2SV_blank>change<S2SV_blank>due<S2SV_blank>to<S2SV_blank>header<S2SV_blank>decoding<S2SV_blank>failure\\\\n\" ) ; s -> width = avctx -> coded_width ; s -> height = avctx -> coded_height ; } } if ( ret == FRAME_SKIPPED ) return get_consumed_bytes ( s , buf_size ) ; if ( ret < 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"header<S2SV_blank>damaged\\\\n\" ) ; return ret ; } if ( ! s -> context_initialized ) { avctx -> pix_fmt = h263_get_format ( avctx ) ; if ( ( ret = ff_mpv_common_init ( s ) ) < 0 ) return ret ; } if ( ! s -> current_picture_ptr || s -> current_picture_ptr -> f -> data [ 0 ] ) { int i = ff_find_unused_picture ( s -> avctx , s -> picture , 0 ) ; if ( i < 0 ) return i ; s -> current_picture_ptr = & s -> picture [ i ] ; } avctx -> has_b_frames = ! s -> low_delay ; if ( CONFIG_MPEG4_DECODER && avctx -> codec_id == AV_CODEC_ID_MPEG4 ) { if ( ff_mpeg4_workaround_bugs ( avctx ) == 1 ) goto retry ; if ( s -> studio_profile != ( s -> idsp . idct == NULL ) ) ff_mpv_idct_init ( s ) ; } if ( s -> width != avctx -> coded_width || s -> height != avctx -> coded_height || s -> context_reinit ) { s -> context_reinit = 0 ; ret = ff_set_dimensions ( avctx , s -> width , s -> height ) ; if ( ret < 0 ) return ret ; ff_set_sar ( avctx , avctx -> sample_aspect_ratio ) ; if ( ( ret = ff_mpv_common_frame_size_change ( s ) ) ) return ret ; if ( avctx -> pix_fmt != h263_get_format ( avctx ) ) { av_log ( avctx , AV_LOG_ERROR , \"format<S2SV_blank>change<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; avctx -> pix_fmt = AV_PIX_FMT_NONE ; return AVERROR_UNKNOWN ; } } if ( s -> codec_id == AV_CODEC_ID_H263 || s -> codec_id == AV_CODEC_ID_H263P || s -> codec_id == AV_CODEC_ID_H263I ) s -> gob_index = H263_GOB_HEIGHT ( s -> height ) ; s -> current_picture . f -> pict_type = s -> pict_type ; s -> current_picture . f -> key_frame = s -> pict_type == AV_PICTURE_TYPE_I ; if ( ! s -> last_picture_ptr && ( s -> pict_type == AV_PICTURE_TYPE_B || s -> droppable ) ) return get_consumed_bytes ( s , buf_size ) ; if ( ( avctx -> skip_frame >= AVDISCARD_NONREF && s -> pict_type == AV_PICTURE_TYPE_B ) || ( avctx -> skip_frame >= AVDISCARD_NONKEY && s -> pict_type != AV_PICTURE_TYPE_I ) || avctx -> skip_frame >= AVDISCARD_ALL ) return get_consumed_bytes ( s , buf_size ) ; if ( s -> next_p_frame_damaged ) { if ( s -> pict_type == AV_PICTURE_TYPE_B ) return get_consumed_bytes ( s , buf_size ) ; else s -> next_p_frame_damaged = 0 ; } if ( ( ! s -> no_rounding ) || s -> pict_type == AV_PICTURE_TYPE_B ) { s -> me . qpel_put = s -> qdsp . put_qpel_pixels_tab ; s -> me . qpel_avg = s -> qdsp . avg_qpel_pixels_tab ; } else { s -> me . qpel_put = s -> qdsp . put_no_rnd_qpel_pixels_tab ; s -> me . qpel_avg = s -> qdsp . avg_qpel_pixels_tab ; } if ( ( ret = ff_mpv_frame_start ( s , avctx ) ) < 0 ) return ret ; if ( ! s -> divx_packed ) ff_thread_finish_setup ( avctx ) ; if ( avctx -> hwaccel ) { ret = avctx -> hwaccel -> start_frame ( avctx , s -> gb . buffer , s -> gb . buffer_end - s -> gb . buffer ) ; if ( ret < 0 ) return ret ; } ff_mpeg_er_frame_start ( s ) ; if ( CONFIG_WMV2_DECODER && s -> msmpeg4_version == 5 ) { ret = ff_wmv2_decode_secondary_picture_header ( s ) ; if ( ret < 0 ) return ret ; if ( ret == 1 ) goto frame_end ; } s -> mb_x = 0 ; s -> mb_y = 0 ; slice_ret = decode_slice ( s ) ; while ( s -> mb_y < s -> mb_height ) { if ( s -> msmpeg4_version ) { if ( s -> slice_height == 0 || s -> mb_x != 0 || slice_ret < 0 || ( s -> mb_y % s -> slice_height ) != 0 || get_bits_left ( & s -> gb ) < 0 ) break ; } else { int prev_x = s -> mb_x , prev_y = s -> mb_y ; if ( ff_h263_resync ( s ) < 0 ) break ; if ( prev_y * s -> mb_width + prev_x < s -> mb_y * s -> mb_width + s -> mb_x ) s -> er . error_occurred = 1 ; } if ( s -> msmpeg4_version < 4 && s -> h263_pred ) ff_mpeg4_clean_buffers ( s ) ; if ( decode_slice ( s ) < 0 ) slice_ret = AVERROR_INVALIDDATA ; } if ( s -> msmpeg4_version && s -> msmpeg4_version < 4 && s -> pict_type == AV_PICTURE_TYPE_I ) if ( ! CONFIG_MSMPEG4_DECODER || ff_msmpeg4_decode_ext_header ( s , buf_size ) < 0 ) s -> er . error_status_table [ s -> mb_num - 1 ] = ER_MB_ERROR ; av_assert1 ( s -> bitstream_buffer_size == 0 ) ; <S2SV_StartBug> frame_end : <S2SV_EndBug> ff_er_frame_end ( & s -> er ) ; if ( avctx -> hwaccel ) { ret = avctx -> hwaccel -> end_frame ( avctx ) ; if ( ret < 0 ) return ret ; } ff_mpv_frame_end ( s ) ; if ( CONFIG_MPEG4_DECODER && avctx -> codec_id == AV_CODEC_ID_MPEG4 ) ff_mpeg4_frame_end ( avctx , buf , buf_size ) ; if ( ! s -> divx_packed && avctx -> hwaccel ) ff_thread_finish_setup ( avctx ) ; av_assert1 ( s -> current_picture . f -> pict_type == s -> current_picture_ptr -> f -> pict_type ) ; av_assert1 ( s -> current_picture . f -> pict_type == s -> pict_type ) ; if ( s -> pict_type == AV_PICTURE_TYPE_B || s -> low_delay ) { if ( ( ret = av_frame_ref ( pict , s -> current_picture_ptr -> f ) ) < 0 ) return ret ; ff_print_debug_info ( s , s -> current_picture_ptr , pict ) ; ff_mpv_export_qp_table ( s , pict , s -> current_picture_ptr , FF_QSCALE_TYPE_MPEG1 ) ; } else if ( s -> last_picture_ptr ) { if ( ( ret = av_frame_ref ( pict , s -> last_picture_ptr -> f ) ) < 0 ) return ret ; ff_print_debug_info ( s , s -> last_picture_ptr , pict ) ; ff_mpv_export_qp_table ( s , pict , s -> last_picture_ptr , FF_QSCALE_TYPE_MPEG1 ) ; } if ( s -> last_picture_ptr || s -> low_delay ) { if ( pict -> format == AV_PIX_FMT_YUV420P && ( s -> codec_tag == AV_RL32 ( \"GEOV\" ) || s -> codec_tag == AV_RL32 ( \"GEOX\" ) ) ) { int x , y , p ; av_frame_make_writable ( pict ) ; for ( p = 0 ; p < 3 ; p ++ ) { int w = AV_CEIL_RSHIFT ( pict -> width , ! ! p ) ; int h = AV_CEIL_RSHIFT ( pict -> height , ! ! p ) ; int linesize = pict -> linesize [ p ] ; for ( y = 0 ; y < ( h >> 1 ) ; y ++ ) for ( x = 0 ; x < w ; x ++ ) FFSWAP ( int , pict -> data [ p ] [ x + y * linesize ] , pict -> data [ p ] [ x + ( h - 1 - y ) * linesize ] ) ; } } * got_frame = 1 ; } if ( slice_ret < 0 && ( avctx -> err_recognition & AV_EF_EXPLODE ) ) return slice_ret ; else return get_consumed_bytes ( s , buf_size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; frame_end : if ( ! s -> studio_profile )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 void sas_deform_port ( struct asd_sas_phy * phy , int gone ) { struct sas_ha_struct * sas_ha = phy -> ha ; struct asd_sas_port * port = phy -> port ; struct sas_internal * si = to_sas_internal ( sas_ha -> core . shost -> transportt ) ; struct domain_device * dev ; unsigned long flags ; if ( ! port ) return ; dev = port -> port_dev ; if ( dev ) dev -> pathways -- ; if ( port -> num_phys == 1 ) { sas_unregister_domain_devices ( port , gone ) ; <S2SV_StartBug> sas_port_delete ( port -> port ) ; <S2SV_EndBug> port -> port = NULL ; } else { sas_port_delete_phy ( port -> port , phy -> phy ) ; sas_device_set_phy ( dev , port -> port ) ; } if ( si -> dft -> lldd_port_deformed ) si -> dft -> lldd_port_deformed ( phy ) ; spin_lock_irqsave ( & sas_ha -> phy_port_lock , flags ) ; spin_lock ( & port -> phy_list_lock ) ; list_del_init ( & phy -> port_phy_el ) ; sas_phy_set_target ( phy , NULL ) ; phy -> port = NULL ; port -> num_phys -- ; port -> phy_mask &= ~ ( 1U << phy -> id ) ; if ( port -> num_phys == 0 ) { INIT_LIST_HEAD ( & port -> phy_list ) ; memset ( port -> sas_addr , 0 , SAS_ADDR_SIZE ) ; memset ( port -> attached_sas_addr , 0 , SAS_ADDR_SIZE ) ; port -> class = 0 ; port -> iproto = 0 ; port -> tproto = 0 ; port -> oob_mode = 0 ; port -> phy_mask = 0 ; } spin_unlock ( & port -> phy_list_lock ) ; spin_unlock_irqrestore ( & sas_ha -> phy_port_lock , flags ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gone ) ; sas_destruct_devices ( port ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8929\n\n```\nCWE-416 int yr_object_copy ( YR_OBJECT * object , YR_OBJECT * * object_copy ) { YR_OBJECT * copy ; YR_OBJECT * o ; YR_STRUCTURE_MEMBER * structure_member ; YR_OBJECT_FUNCTION * func ; YR_OBJECT_FUNCTION * func_copy ; int i ; * object_copy = NULL ; FAIL_ON_ERROR ( yr_object_create ( object -> type , object -> identifier , NULL , & copy ) ) ; switch ( object -> type ) { case OBJECT_TYPE_INTEGER : <S2SV_StartBug> ( ( YR_OBJECT_INTEGER * ) copy ) -> value = UNDEFINED ; <S2SV_EndBug> break ; case OBJECT_TYPE_STRING : <S2SV_StartBug> ( ( YR_OBJECT_STRING * ) copy ) -> value = NULL ; <S2SV_EndBug> break ; case OBJECT_TYPE_FUNCTION : func = ( YR_OBJECT_FUNCTION * ) object ; func_copy = ( YR_OBJECT_FUNCTION * ) copy ; FAIL_ON_ERROR_WITH_CLEANUP ( yr_object_copy ( func -> return_obj , & func_copy -> return_obj ) , yr_object_destroy ( copy ) ) ; for ( i = 0 ; i < MAX_OVERLOADED_FUNCTIONS ; i ++ ) func_copy -> prototypes [ i ] = func -> prototypes [ i ] ; break ; case OBJECT_TYPE_STRUCTURE : structure_member = ( ( YR_OBJECT_STRUCTURE * ) object ) -> members ; while ( structure_member != NULL ) { FAIL_ON_ERROR_WITH_CLEANUP ( yr_object_copy ( structure_member -> object , & o ) , yr_object_destroy ( copy ) ) ; FAIL_ON_ERROR_WITH_CLEANUP ( yr_object_structure_set_member ( copy , o ) , yr_free ( o ) ; yr_object_destroy ( copy ) ) ; structure_member = structure_member -> next ; } break ; case OBJECT_TYPE_ARRAY : yr_object_copy ( ( ( YR_OBJECT_ARRAY * ) object ) -> prototype_item , & o ) ; ( ( YR_OBJECT_ARRAY * ) copy ) -> prototype_item = o ; break ; case OBJECT_TYPE_DICTIONARY : yr_object_copy ( ( ( YR_OBJECT_DICTIONARY * ) object ) -> prototype_item , & o ) ; ( ( YR_OBJECT_DICTIONARY * ) copy ) -> prototype_item = o ; break ; default : assert ( FALSE ) ; } * object_copy = copy ; return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> value = ( ( YR_OBJECT_INTEGER * ) object ) -> value <S2SV_ModEnd> ; break ; <S2SV_ModStart> case OBJECT_TYPE_STRING : if ( <S2SV_ModStart> YR_OBJECT_STRING * ) object ) -> value != NULL ) { ( ( YR_OBJECT_STRING * ) copy ) -> value = sized_string_dup ( ( ( YR_OBJECT_STRING * ) object ) -> value ) ; } else { ( ( YR_OBJECT_STRING * ) copy ) -> value = NULL ; } break ; case OBJECT_TYPE_FLOAT : ( ( YR_OBJECT_DOUBLE * ) copy ) -> value = ( ( YR_OBJECT_DOUBLE * ) object ) -> value <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8852\n\n```\nCWE-000 static uint16_t http_dissect_hdrs ( struct worker * w , struct http * hp , int fd , char * p , const struct http_conn * htc ) { char * q , * r ; txt t = htc -> rxbuf ; if ( * p == '\\\\r' ) p ++ ; hp -> nhd = HTTP_HDR_FIRST ; hp -> conds = 0 ; r = NULL ; for ( ; p < t . e ; p = r ) { q = r = p ; while ( r < t . e ) { <S2SV_StartBug> if ( ! vct_iscrlf ( * r ) ) { <S2SV_EndBug> r ++ ; continue ; } q = r ; assert ( r < t . e ) ; r += vct_skipcrlf ( r ) ; if ( r >= t . e ) break ; if ( ! vct_issp ( * r ) ) break ; while ( vct_islws ( * q ) ) * q ++ = '<S2SV_blank>' ; } if ( q - p > htc -> maxhdr ) { VSC_C_main -> losthdr ++ ; WSL ( w , SLT_LostHeader , fd , \"%.*s\" , q - p > 20 ? 20 : q - p , p ) ; return ( 413 ) ; } if ( p == q ) break ; if ( ( p [ 0 ] == 'i' || p [ 0 ] == 'I' ) && ( p [ 1 ] == 'f' || p [ 1 ] == 'F' ) && p [ 2 ] == '-' ) hp -> conds = 1 ; while ( q > p && vct_issp ( q [ - 1 ] ) ) q -- ; * q = '\\\\0' ; if ( hp -> nhd < hp -> shd ) { hp -> hdf [ hp -> nhd ] = 0 ; hp -> hd [ hp -> nhd ] . b = p ; hp -> hd [ hp -> nhd ] . e = q ; WSLH ( w , fd , hp , hp -> nhd ) ; hp -> nhd ++ ; } else { VSC_C_main -> losthdr ++ ; WSL ( w , SLT_LostHeader , fd , \"%.*s\" , q - p > 20 ? 20 : q - p , p ) ; return ( 413 ) ; } } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! vct_iscrlf ( <S2SV_ModEnd> r ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1593\n\n```\nCWE-264 static unsigned long randomize_stack_top ( unsigned long stack_top ) { <S2SV_StartBug> unsigned int random_variable = 0 ; <S2SV_EndBug> if ( ( current -> flags & PF_RANDOMIZE ) && ! ( current -> personality & ADDR_NO_RANDOMIZE ) ) { <S2SV_StartBug> random_variable = get_random_int ( ) & STACK_RND_MASK ; <S2SV_EndBug> random_variable <<= PAGE_SHIFT ; } # ifdef CONFIG_STACK_GROWSUP return PAGE_ALIGN ( stack_top ) + random_variable ; # else return PAGE_ALIGN ( stack_top ) - random_variable ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { unsigned long <S2SV_ModEnd> random_variable = 0 <S2SV_ModStart> { random_variable = ( unsigned long ) <S2SV_ModStart> get_random_int ( ) ; random_variable &= <S2SV_ModEnd> STACK_RND_MASK ; random_variable\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8071\n\n```\nCWE-404 static int cp2112_gpio_direction_output ( struct gpio_chip * chip , unsigned offset , int value ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> int ret ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_GET_REPORT ) ; if ( ret != CP2112_GPIO_CONFIG_LENGTH ) { hid_err ( hdev , \"error<S2SV_blank>requesting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto fail ; } buf [ 1 ] |= 1 << offset ; buf [ 2 ] = gpio_push_pull ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_SET_REPORT ) ; if ( ret < 0 ) { hid_err ( hdev , \"error<S2SV_blank>setting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto fail ; } <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> cp2112_gpio_set ( chip , offset , value ) ; return 0 ; fail : <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> return ret < 0 ? ret : - EIO ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> in_out_buffer ; <S2SV_ModEnd> int ret ; <S2SV_ModStart> int ret ; mutex_lock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; ret <S2SV_ModStart> fail ; } mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; cp2112_gpio_set <S2SV_ModStart> ; fail : mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 void hugetlb_unreserve_pages ( struct inode * inode , long offset , long freed ) { struct hstate * h = hstate_inode ( inode ) ; long chg = region_truncate ( & inode -> i_mapping -> private_list , offset ) ; <S2SV_StartBug> spin_lock ( & inode -> i_lock ) ; <S2SV_EndBug> inode -> i_blocks -= ( blocks_per_huge_page ( h ) * freed ) ; spin_unlock ( & inode -> i_lock ) ; <S2SV_StartBug> hugetlb_put_quota ( inode -> i_mapping , ( chg - freed ) ) ; <S2SV_EndBug> hugetlb_acct_memory ( h , - ( chg - freed ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> offset ) ; struct hugepage_subpool * spool = subpool_inode ( inode ) ; <S2SV_ModStart> i_lock ) ; hugepage_subpool_put_pages ( spool <S2SV_ModEnd> , ( chg\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-416 static int validate_user_key ( struct fscrypt_info * crypt_info , struct fscrypt_context * ctx , u8 * raw_key , const char * prefix ) { char * description ; struct key * keyring_key ; struct fscrypt_key * master_key ; const struct user_key_payload * ukp ; int res ; description = kasprintf ( GFP_NOFS , \"%s%*phN\" , prefix , FS_KEY_DESCRIPTOR_SIZE , ctx -> master_key_descriptor ) ; if ( ! description ) return - ENOMEM ; keyring_key = request_key ( & key_type_logon , description , NULL ) ; kfree ( description ) ; if ( IS_ERR ( keyring_key ) ) return PTR_ERR ( keyring_key ) ; <S2SV_StartBug> if ( keyring_key -> type != & key_type_logon ) { <S2SV_EndBug> printk_once ( KERN_WARNING \"%s:<S2SV_blank>key<S2SV_blank>type<S2SV_blank>must<S2SV_blank>be<S2SV_blank>logon\\\\n\" , __func__ ) ; res = - ENOKEY ; goto out ; } <S2SV_StartBug> down_read ( & keyring_key -> sem ) ; <S2SV_EndBug> <S2SV_StartBug> ukp = user_key_payload ( keyring_key ) ; <S2SV_EndBug> if ( ukp -> datalen != sizeof ( struct fscrypt_key ) ) { res = - EINVAL ; up_read ( & keyring_key -> sem ) ; goto out ; } master_key = ( struct fscrypt_key * ) ukp -> data ; BUILD_BUG_ON ( FS_AES_128_ECB_KEY_SIZE != FS_KEY_DERIVATION_NONCE_SIZE ) ; if ( master_key -> size != FS_AES_256_XTS_KEY_SIZE ) { printk_once ( KERN_WARNING \"%s:<S2SV_blank>key<S2SV_blank>size<S2SV_blank>incorrect:<S2SV_blank>%d\\\\n\" , __func__ , master_key -> size ) ; res = - ENOKEY ; up_read ( & keyring_key -> sem ) ; goto out ; } res = derive_key_aes ( ctx -> nonce , master_key -> raw , raw_key ) ; up_read ( & keyring_key -> sem ) ; if ( res ) goto out ; crypt_info -> ci_keyring_key = keyring_key ; return 0 ; out : key_put ( keyring_key ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> keyring_key ) ; down_read ( & keyring_key -> sem ) ; <S2SV_ModStart> out ; } ukp = user_key_payload ( keyring_key ) ; if ( ukp -> datalen != sizeof ( struct fscrypt_key ) ) { res = - EINVAL ; goto out ; } master_key = ( struct fscrypt_key * ) ukp -> data ; BUILD_BUG_ON ( FS_AES_128_ECB_KEY_SIZE != FS_KEY_DERIVATION_NONCE_SIZE ) ; if ( master_key -> size != FS_AES_256_XTS_KEY_SIZE ) { printk_once ( KERN_WARNING \"%s:<S2SV_blank>key<S2SV_blank>size<S2SV_blank>incorrect:<S2SV_blank>%d\\\\n\" , __func__ , master_key -> size ) ; res = - ENOKEY ; goto out ; } res = derive_key_aes ( ctx -> nonce , master_key -> raw , raw_key ) ; out : up_read <S2SV_ModEnd> ( & keyring_key <S2SV_ModStart> sem ) ; key_put ( keyring_key ) ; return <S2SV_ModEnd> res ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11379\n\n```\nCWE-125 static void get_nb10 ( ut8 * dbg_data , SCV_NB10_HEADER * res ) { const int nb10sz = 16 ; <S2SV_StartBug> memcpy ( res , dbg_data , nb10sz ) ; <S2SV_EndBug> res -> file_name = ( ut8 * ) strdup ( ( const char * ) dbg_data + nb10sz ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 16 ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5355\n\n```\nCWE-000 static krb5_error_code recvauth_common ( krb5_context context , krb5_auth_context * auth_context , krb5_pointer fd , char * appl_version , krb5_principal server , krb5_int32 flags , krb5_keytab keytab , krb5_ticket * * ticket , krb5_data * version ) { krb5_auth_context new_auth_context ; krb5_flags ap_option = 0 ; krb5_error_code retval , problem ; krb5_data inbuf ; krb5_data outbuf ; krb5_rcache rcache = 0 ; krb5_octet response ; krb5_data null_server ; <S2SV_StartBug> int need_error_free = 0 ; <S2SV_EndBug> int local_rcache = 0 , local_authcon = 0 ; problem = 0 ; response = 0 ; if ( ! ( flags & KRB5_RECVAUTH_SKIP_VERSION ) ) { if ( ( retval = krb5_read_message ( context , fd , & inbuf ) ) ) return ( retval ) ; <S2SV_StartBug> if ( strcmp ( inbuf . data , sendauth_version ) ) { <S2SV_EndBug> problem = KRB5_SENDAUTH_BADAUTHVERS ; response = 1 ; } free ( inbuf . data ) ; } if ( flags & KRB5_RECVAUTH_BADAUTHVERS ) { problem = KRB5_SENDAUTH_BADAUTHVERS ; response = 1 ; } if ( ( retval = krb5_read_message ( context , fd , & inbuf ) ) ) return ( retval ) ; <S2SV_StartBug> if ( appl_version && strcmp ( inbuf . data , appl_version ) ) { <S2SV_EndBug> if ( ! problem ) { problem = KRB5_SENDAUTH_BADAPPLVERS ; response = 2 ; } } if ( version && ! problem ) * version = inbuf ; else free ( inbuf . data ) ; if ( ( krb5_net_write ( context , * ( ( int * ) fd ) , ( char * ) & response , 1 ) ) < 0 ) { return ( problem ) ; } if ( problem ) return ( problem ) ; if ( ( retval = krb5_read_message ( context , fd , & inbuf ) ) ) return retval ; if ( * auth_context == NULL ) { problem = krb5_auth_con_init ( context , & new_auth_context ) ; * auth_context = new_auth_context ; local_authcon = 1 ; } krb5_auth_con_getrcache ( context , * auth_context , & rcache ) ; if ( ( ! problem ) && rcache == NULL ) { if ( server != NULL && server -> length > 0 ) { problem = krb5_get_server_rcache ( context , & server -> data [ 0 ] , & rcache ) ; } else { null_server . length = 7 ; null_server . data = \"default\" ; problem = krb5_get_server_rcache ( context , & null_server , & rcache ) ; } if ( ! problem ) problem = krb5_auth_con_setrcache ( context , * auth_context , rcache ) ; local_rcache = 1 ; } if ( ! problem ) { problem = krb5_rd_req ( context , auth_context , & inbuf , server , keytab , & ap_option , ticket ) ; free ( inbuf . data ) ; } if ( problem ) { krb5_error error ; const char * message ; memset ( & error , 0 , sizeof ( error ) ) ; krb5_us_timeofday ( context , & error . stime , & error . susec ) ; if ( server ) error . server = server ; else { ( void ) krb5_parse_name ( context , \"????\" , & error . server ) ; need_error_free = 1 ; } error . error = problem - ERROR_TABLE_BASE_krb5 ; if ( error . error > 127 ) error . error = KRB_ERR_GENERIC ; message = error_message ( problem ) ; error . text . length = strlen ( message ) + 1 ; error . text . data = strdup ( message ) ; if ( ! error . text . data ) { retval = ENOMEM ; goto cleanup ; } if ( ( retval = krb5_mk_error ( context , & error , & outbuf ) ) ) { free ( error . text . data ) ; goto cleanup ; } free ( error . text . data ) ; if ( need_error_free ) krb5_free_principal ( context , error . server ) ; } else { outbuf . length = 0 ; outbuf . data = 0 ; } retval = krb5_write_message ( context , fd , & outbuf ) ; if ( outbuf . data ) { free ( outbuf . data ) ; retval = problem ; goto cleanup ; } if ( retval ) goto cleanup ; if ( ( ap_option & AP_OPTS_MUTUAL_REQUIRED ) ) { if ( ( retval = krb5_mk_rep ( context , * auth_context , & outbuf ) ) ) { return ( retval ) ; } retval = krb5_write_message ( context , fd , & outbuf ) ; free ( outbuf . data ) ; } cleanup : ; if ( retval ) { if ( local_authcon ) { krb5_auth_con_free ( context , * auth_context ) ; } else if ( local_rcache && rcache != NULL ) { krb5_rc_close ( context , rcache ) ; krb5_auth_con_setrcache ( context , * auth_context , NULL ) ; } } return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> krb5_data null_server ; krb5_data d ; <S2SV_ModStart> retval ) ; d = make_data ( ( char * ) sendauth_version , strlen ( sendauth_version ) + 1 ) ; if ( ! data_eq ( inbuf , d <S2SV_ModEnd> ) ) { <S2SV_ModStart> if ( appl_version != NULL && ! problem ) { d = make_data ( appl_version , strlen ( appl_version ) + 1 ) ; if ( ! data_eq ( inbuf , d ) <S2SV_ModEnd> ) { problem\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum ltree_in ( PG_FUNCTION_ARGS ) { char * buf = ( char * ) PG_GETARG_POINTER ( 0 ) ; char * ptr ; nodeitem * list , * lptr ; int num = 0 , totallen = 0 ; int state = LTPRS_WAITNAME ; ltree * result ; ltree_level * curlevel ; int charlen ; int pos = 0 ; ptr = buf ; while ( * ptr ) { charlen = pg_mblen ( ptr ) ; if ( charlen == 1 && t_iseq ( ptr , '.' ) ) num ++ ; ptr += charlen ; } <S2SV_StartBug> list = lptr = ( nodeitem * ) palloc ( sizeof ( nodeitem ) * ( num + 1 ) ) ; <S2SV_EndBug> ptr = buf ; while ( * ptr ) { charlen = pg_mblen ( ptr ) ; if ( state == LTPRS_WAITNAME ) { if ( ISALNUM ( ptr ) ) { lptr -> start = ptr ; lptr -> wlen = 0 ; state = LTPRS_WAITDELIM ; } else UNCHAR ; } else if ( state == LTPRS_WAITDELIM ) { if ( charlen == 1 && t_iseq ( ptr , '.' ) ) { lptr -> len = ptr - lptr -> start ; if ( lptr -> wlen > 255 ) ereport ( ERROR , ( errcode ( ERRCODE_NAME_TOO_LONG ) , errmsg ( \"name<S2SV_blank>of<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) , errdetail ( \"Name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>\" \"be<S2SV_blank><<S2SV_blank>256,<S2SV_blank>in<S2SV_blank>position<S2SV_blank>%d.\" , lptr -> wlen , pos ) ) ) ; totallen += MAXALIGN ( lptr -> len + LEVEL_HDRSIZE ) ; lptr ++ ; state = LTPRS_WAITNAME ; } else if ( ! ISALNUM ( ptr ) ) UNCHAR ; } else elog ( ERROR , \"internal<S2SV_blank>error<S2SV_blank>in<S2SV_blank>parser\" ) ; ptr += charlen ; lptr -> wlen ++ ; pos ++ ; } if ( state == LTPRS_WAITDELIM ) { lptr -> len = ptr - lptr -> start ; if ( lptr -> wlen > 255 ) ereport ( ERROR , ( errcode ( ERRCODE_NAME_TOO_LONG ) , errmsg ( \"name<S2SV_blank>of<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) , errdetail ( \"Name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>\" \"be<S2SV_blank><<S2SV_blank>256,<S2SV_blank>in<S2SV_blank>position<S2SV_blank>%d.\" , lptr -> wlen , pos ) ) ) ; totallen += MAXALIGN ( lptr -> len + LEVEL_HDRSIZE ) ; lptr ++ ; } else if ( ! ( state == LTPRS_WAITNAME && lptr == list ) ) ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) , errdetail ( \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>line.\" ) ) ) ; result = ( ltree * ) palloc0 ( LTREE_HDRSIZE + totallen ) ; SET_VARSIZE ( result , LTREE_HDRSIZE + totallen ) ; result -> numlevel = lptr - list ; curlevel = LTREE_FIRST ( result ) ; lptr = list ; while ( lptr - list < result -> numlevel ) { curlevel -> len = ( uint16 ) lptr -> len ; memcpy ( curlevel -> name , lptr -> start , lptr -> len ) ; curlevel = LEVEL_NEXT ( curlevel ) ; lptr ++ ; } pfree ( list ) ; PG_RETURN_POINTER ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> charlen ; } if ( num + 1 > MaxAllocSize / sizeof ( nodeitem ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>levels<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , num + 1 , ( int ) ( MaxAllocSize / sizeof ( nodeitem ) ) ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2521\n\n```\nCWE-189 static inline void x86_assign_hw_event ( struct perf_event * event , struct cpu_hw_events * cpuc , int i ) { struct hw_perf_event * hwc = & event -> hw ; hwc -> idx = cpuc -> assign [ i ] ; hwc -> last_cpu = smp_processor_id ( ) ; hwc -> last_tag = ++ cpuc -> tags [ i ] ; if ( hwc -> idx == X86_PMC_IDX_FIXED_BTS ) { hwc -> config_base = 0 ; hwc -> event_base = 0 ; } else if ( hwc -> idx >= X86_PMC_IDX_FIXED ) { hwc -> config_base = MSR_ARCH_PERFMON_FIXED_CTR_CTRL ; <S2SV_StartBug> hwc -> event_base = MSR_ARCH_PERFMON_FIXED_CTR0 ; <S2SV_EndBug> } else { hwc -> config_base = x86_pmu_config_addr ( hwc -> idx ) ; hwc -> event_base = x86_pmu_event_addr ( hwc -> idx ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> event_base = MSR_ARCH_PERFMON_FIXED_CTR0 + ( hwc -> idx - X86_PMC_IDX_FIXED )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18379\n\n```\nCWE-119 static struct nvmet_fc_tgt_queue * nvmet_fc_find_target_queue ( struct nvmet_fc_tgtport * tgtport , u64 connection_id ) { struct nvmet_fc_tgt_assoc * assoc ; struct nvmet_fc_tgt_queue * queue ; u64 association_id = nvmet_fc_getassociationid ( connection_id ) ; u16 qid = nvmet_fc_getqueueid ( connection_id ) ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> spin_lock_irqsave ( & tgtport -> lock , flags ) ; list_for_each_entry ( assoc , & tgtport -> assoc_list , a_list ) { if ( association_id == assoc -> association_id ) { queue = assoc -> queues [ qid ] ; if ( queue && ( ! atomic_read ( & queue -> connected ) || ! nvmet_fc_tgt_q_get ( queue ) ) ) queue = NULL ; spin_unlock_irqrestore ( & tgtport -> lock , flags ) ; return queue ; } } spin_unlock_irqrestore ( & tgtport -> lock , flags ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned long flags ; if ( qid > NVMET_NR_QUEUES ) return NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_offsets ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_StartBug> int mi_row , int mi_col , BLOCK_SIZE bsize ) { <S2SV_EndBug> <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & x -> e_mbd ; MB_MODE_INFO * mbmi ; const int mi_width = num_8x8_blocks_wide_lookup [ bsize ] ; const int mi_height = num_8x8_blocks_high_lookup [ bsize ] ; <S2SV_StartBug> const int mb_row = mi_row >> 1 ; <S2SV_EndBug> const int mb_col = mi_col >> 1 ; const int idx_map = mb_row * cm -> mb_cols + mb_col ; const struct segmentation * const seg = & cm -> seg ; set_skip_context ( xd , mi_row , mi_col ) ; <S2SV_StartBug> x -> mb_activity_ptr = & cpi -> mb_activity_map [ idx_map ] ; <S2SV_EndBug> x -> in_active_map = check_active_map ( cpi , x , mi_row , mi_col , bsize ) ; set_modeinfo_offsets ( cm , xd , mi_row , mi_col ) ; mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> vp9_setup_dst_planes ( xd , get_frame_new_buffer ( cm ) , mi_row , mi_col ) ; <S2SV_EndBug> x -> mv_row_min = - ( ( ( mi_row + mi_height ) * MI_SIZE ) + VP9_INTERP_EXTEND ) ; x -> mv_col_min = - ( ( ( mi_col + mi_width ) * MI_SIZE ) + VP9_INTERP_EXTEND ) ; x -> mv_row_max = ( cm -> mi_rows - mi_row ) * MI_SIZE + VP9_INTERP_EXTEND ; x -> mv_col_max = ( cm -> mi_cols - mi_col ) * MI_SIZE + VP9_INTERP_EXTEND ; assert ( ! ( mi_col & ( mi_width - 1 ) ) && ! ( mi_row & ( mi_height - 1 ) ) ) ; set_mi_row_col ( xd , tile , mi_row , mi_height , mi_col , mi_width , cm -> mi_rows , cm -> mi_cols ) ; vp9_setup_src_planes ( x , cpi -> Source , mi_row , mi_col ) ; <S2SV_StartBug> x -> rddiv = cpi -> RDDIV ; <S2SV_EndBug> <S2SV_StartBug> x -> rdmult = cpi -> RDMULT ; <S2SV_EndBug> if ( seg -> enabled ) { if ( cpi -> oxcf . aq_mode != VARIANCE_AQ ) { const uint8_t * const map = seg -> update_map ? cpi -> segmentation_map : cm -> last_frame_seg_map ; <S2SV_StartBug> mbmi -> segment_id = vp9_get_segment_id ( cm , map , bsize , mi_row , mi_col ) ; <S2SV_EndBug> } vp9_init_plane_quantizers ( cpi , x ) ; x -> encode_breakout = cpi -> segment_encode_breakout [ mbmi -> segment_id ] ; } else { mbmi -> segment_id = 0 ; x -> encode_breakout = cpi -> encode_breakout ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const tile , MACROBLOCK * const x , <S2SV_ModStart> bsize ) { <S2SV_ModEnd> VP9_COMMON * const <S2SV_ModStart> ] ; const <S2SV_ModEnd> struct segmentation * <S2SV_ModStart> mi_col ) ; set_mode_info_offsets ( cm , x <S2SV_ModEnd> , xd , <S2SV_ModStart> vp9_setup_dst_planes ( xd -> plane <S2SV_ModStart> = cpi -> rd . <S2SV_ModStart> = cpi -> rd . <S2SV_ModStart> -> segment_id = get_segment_id <S2SV_ModEnd> ( cm , <S2SV_ModStart> encode_breakout ; } xd -> tile = * tile ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 void MSG_WriteBits ( msg_t * msg , int value , int bits ) { int i ; oldsize += bits ; <S2SV_StartBug> if ( msg -> maxsize - msg -> cursize < 4 ) { <S2SV_EndBug> msg -> overflowed = qtrue ; return ; } if ( bits == 0 || bits < - 31 || bits > 32 ) { Com_Error ( ERR_DROP , \"MSG_WriteBits:<S2SV_blank>bad<S2SV_blank>bits<S2SV_blank>%i\" , bits ) ; } if ( bits < 0 ) { bits = - bits ; } if ( msg -> oob ) { <S2SV_StartBug> if ( bits == 8 ) { <S2SV_EndBug> msg -> data [ msg -> cursize ] = value ; msg -> cursize += 1 ; msg -> bit += 8 ; } else if ( bits == 16 ) { short temp = value ; CopyLittleShort ( & msg -> data [ msg -> cursize ] , & temp ) ; msg -> cursize += 2 ; msg -> bit += 16 ; } else if ( bits == 32 ) { CopyLittleLong ( & msg -> data [ msg -> cursize ] , & value ) ; msg -> cursize += 4 ; msg -> bit += 32 ; } else { Com_Error ( ERR_DROP , \"can\\'t<S2SV_blank>write<S2SV_blank>%d<S2SV_blank>bits\" , bits ) ; } } else { value &= ( 0xffffffff >> ( 32 - bits ) ) ; if ( bits & 7 ) { int nbits ; <S2SV_StartBug> nbits = bits & 7 ; <S2SV_EndBug> for ( i = 0 ; i < nbits ; i ++ ) { Huff_putBit ( ( value & 1 ) , msg -> data , & msg -> bit ) ; value = ( value >> 1 ) ; } bits = bits - nbits ; } if ( bits ) { for ( i = 0 ; i < bits ; i += 8 ) { <S2SV_StartBug> Huff_offsetTransmit ( & msgHuff . compressor , ( value & 0xff ) , msg -> data , & msg -> bit ) ; <S2SV_EndBug> value = ( value >> 8 ) ; <S2SV_StartBug> } <S2SV_EndBug> } msg -> cursize = ( msg -> bit >> 3 ) + 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( msg -> overflowed ) { <S2SV_ModEnd> return ; } <S2SV_ModStart> { if ( msg -> cursize + ( bits >> 3 ) > msg -> maxsize ) { msg -> overflowed = qtrue ; return ; } if ( <S2SV_ModStart> & 7 ; if ( msg -> bit + nbits > msg -> maxsize << 3 ) { msg -> overflowed = qtrue ; return ; } <S2SV_ModStart> msg -> bit , msg -> maxsize << 3 <S2SV_ModStart> 8 ) ; if ( msg -> bit > msg -> maxsize << 3 ) { msg -> overflowed = qtrue ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12424\n\n```\nCWE-119 int commonio_sort ( struct commonio_db * db , int ( * cmp ) ( const void * , const void * ) ) { struct commonio_entry * * entries , * ptr ; size_t n = 0 , i ; # if KEEP_NIS_AT_END struct commonio_entry * nis = NULL ; # endif for ( ptr = db -> head ; ( NULL != ptr ) # if KEEP_NIS_AT_END <S2SV_StartBug> && ( NULL != ptr -> line ) <S2SV_EndBug> <S2SV_StartBug> && ( ( '+' != ptr -> line [ 0 ] ) <S2SV_EndBug> <S2SV_StartBug> && ( '-' != ptr -> line [ 0 ] ) ) <S2SV_EndBug> # endif ; ptr = ptr -> next ) { n ++ ; } # if KEEP_NIS_AT_END <S2SV_StartBug> if ( ( NULL != ptr ) && ( NULL != ptr -> line ) ) { <S2SV_EndBug> nis = ptr ; } # endif if ( n <= 1 ) { return 0 ; } entries = malloc ( n * sizeof ( struct commonio_entry * ) ) ; if ( entries == NULL ) { return - 1 ; } n = 0 ; for ( ptr = db -> head ; # if KEEP_NIS_AT_END nis != ptr ; # else NULL != ptr ; # endif ptr = ptr -> next ) { entries [ n ] = ptr ; n ++ ; } qsort ( entries , n , sizeof ( struct commonio_entry * ) , cmp ) ; db -> head = entries [ 0 ] ; n -- ; # if KEEP_NIS_AT_END if ( NULL == nis ) # endif { db -> tail = entries [ n ] ; } db -> head -> prev = NULL ; db -> head -> next = entries [ 1 ] ; entries [ n ] -> prev = entries [ n - 1 ] ; # if KEEP_NIS_AT_END entries [ n ] -> next = nis ; # else entries [ n ] -> next = NULL ; # endif for ( i = 1 ; i < n ; i ++ ) { entries [ i ] -> prev = entries [ i - 1 ] ; entries [ i ] -> next = entries [ i + 1 ] ; } free ( entries ) ; db -> changed = true ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> KEEP_NIS_AT_END && ( ( NULL == <S2SV_ModEnd> ptr -> line <S2SV_ModStart> -> line ) || ( ( '+' != ptr -> line [ 0 ] ) && ( '-' <S2SV_ModEnd> != ptr -> <S2SV_ModStart> 0 ] ) <S2SV_ModEnd> ) ) # <S2SV_ModStart> KEEP_NIS_AT_END if ( NULL != ptr <S2SV_ModEnd> ) { nis\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void Scale2D ( unsigned char * source , int source_pitch , unsigned int source_width , unsigned int source_height , unsigned char * dest , int dest_pitch , unsigned int dest_width , unsigned int dest_height , unsigned char * temp_area , unsigned char temp_area_height , unsigned int hscale , unsigned int hratio , unsigned int vscale , unsigned int vratio , unsigned int interlaced ) { int i , j , k ; int bands ; int dest_band_height ; int source_band_height ; typedef void ( * Scale1D ) ( const unsigned char * source , int source_step , unsigned int source_scale , unsigned int source_length , unsigned char * dest , int dest_step , unsigned int dest_scale , unsigned int dest_length ) ; Scale1D Scale1Dv = scale1d_c ; Scale1D Scale1Dh = scale1d_c ; void ( * horiz_line_scale ) ( const unsigned char * , unsigned int , unsigned char * , unsigned int ) = NULL ; void ( * vert_band_scale ) ( unsigned char * , unsigned int , unsigned char * , unsigned int , unsigned int ) = NULL ; int ratio_scalable = 1 ; int interpolation = 0 ; unsigned char * source_base ; unsigned char * line_src ; source_base = ( unsigned char * ) source ; if ( source_pitch < 0 ) { int offset ; offset = ( source_height - 1 ) ; offset *= source_pitch ; source_base += offset ; } switch ( hratio * 10 / hscale ) { case 8 : horiz_line_scale = vp8_horizontal_line_5_4_scale ; break ; case 6 : horiz_line_scale = vp8_horizontal_line_5_3_scale ; break ; case 5 : horiz_line_scale = vp8_horizontal_line_2_1_scale ; break ; default : ratio_scalable = 0 ; break ; } switch ( vratio * 10 / vscale ) { case 8 : vert_band_scale = vp8_vertical_band_5_4_scale ; source_band_height = 5 ; dest_band_height = 4 ; break ; case 6 : vert_band_scale = vp8_vertical_band_5_3_scale ; source_band_height = 5 ; dest_band_height = 3 ; break ; case 5 : if ( interlaced ) { vert_band_scale = vp8_vertical_band_2_1_scale ; } else { interpolation = 1 ; vert_band_scale = vp8_vertical_band_2_1_scale_i ; } source_band_height = 2 ; dest_band_height = 1 ; break ; default : ratio_scalable = 0 ; break ; } if ( ratio_scalable ) { if ( source_height == dest_height ) { for ( k = 0 ; k < ( int ) dest_height ; k ++ ) { horiz_line_scale ( source , source_width , dest , dest_width ) ; source += source_pitch ; dest += dest_pitch ; } return ; } if ( interpolation ) { if ( source < source_base ) source = source_base ; horiz_line_scale ( source , source_width , temp_area , dest_width ) ; } for ( k = 0 ; k < ( int ) ( dest_height + dest_band_height - 1 ) / dest_band_height ; k ++ ) { for ( i = 0 ; i < source_band_height ; i ++ ) { line_src = ( unsigned char * ) source + i * source_pitch ; if ( line_src < source_base ) line_src = source_base ; horiz_line_scale ( line_src , source_width , temp_area + ( i + 1 ) * dest_pitch , dest_width ) ; } vert_band_scale ( temp_area + dest_pitch , dest_pitch , dest , dest_pitch , dest_width ) ; if ( interpolation ) <S2SV_StartBug> vpx_memcpy ( temp_area , temp_area + source_band_height * dest_pitch , dest_width ) ; <S2SV_EndBug> source += ( unsigned long ) source_band_height * source_pitch ; dest += ( unsigned long ) dest_band_height * dest_pitch ; } return ; } if ( hscale == 2 && hratio == 1 ) Scale1Dh = scale1d_2t1_ps ; if ( vscale == 2 && vratio == 1 ) { if ( interlaced ) Scale1Dv = scale1d_2t1_ps ; else Scale1Dv = scale1d_2t1_i ; } if ( source_height == dest_height ) { for ( k = 0 ; k < ( int ) dest_height ; k ++ ) { Scale1Dh ( source , 1 , hscale , source_width + 1 , dest , 1 , hratio , dest_width ) ; source += source_pitch ; dest += dest_pitch ; } return ; } if ( dest_height > source_height ) { dest_band_height = temp_area_height - 1 ; source_band_height = dest_band_height * source_height / dest_height ; } else { source_band_height = temp_area_height - 1 ; dest_band_height = source_band_height * vratio / vscale ; } Scale1Dh ( source , 1 , hscale , source_width + 1 , temp_area , 1 , hratio , dest_width ) ; bands = ( dest_height + dest_band_height - 1 ) / dest_band_height ; for ( k = 0 ; k < bands ; k ++ ) { for ( i = 1 ; i < source_band_height + 1 ; i ++ ) { if ( k * source_band_height + i < ( int ) source_height ) { Scale1Dh ( source + i * source_pitch , 1 , hscale , source_width + 1 , temp_area + i * dest_pitch , 1 , hratio , dest_width ) ; } else { <S2SV_StartBug> vpx_memcpy ( temp_area + i * dest_pitch , temp_area + ( i - 1 ) * dest_pitch , dest_pitch ) ; <S2SV_EndBug> } } for ( j = 0 ; j < ( int ) dest_width ; j ++ ) { Scale1Dv ( & temp_area [ j ] , dest_pitch , vscale , source_band_height + 1 , & dest [ j ] , dest_pitch , vratio , dest_band_height ) ; } <S2SV_StartBug> vpx_memcpy ( temp_area , temp_area + source_band_height * dest_pitch , dest_pitch ) ; <S2SV_EndBug> source += source_band_height * source_pitch ; dest += dest_band_height * dest_pitch ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interpolation ) memcpy <S2SV_ModEnd> ( temp_area , <S2SV_ModStart> } else { memcpy <S2SV_ModEnd> ( temp_area + <S2SV_ModStart> ) ; } memcpy <S2SV_ModEnd> ( temp_area ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3687\n\n```\nCWE-399 struct sctp_chunk * sctp_assoc_lookup_asconf_ack ( const struct sctp_association * asoc , __be32 serial ) { struct sctp_chunk * ack ; list_for_each_entry ( ack , & asoc -> asconf_ack_list , transmitted_list ) { <S2SV_StartBug> if ( ack -> subh . addip_hdr -> serial == serial ) { <S2SV_EndBug> sctp_chunk_hold ( ack ) ; return ack ; } } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( sctp_chunk_pending ( ack ) ) continue ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7480\n\n```\nCWE-415 int blkcg_init_queue ( struct request_queue * q ) { struct blkcg_gq * new_blkg , * blkg ; bool preloaded ; int ret ; new_blkg = blkg_alloc ( & blkcg_root , q , GFP_KERNEL ) ; if ( ! new_blkg ) return - ENOMEM ; preloaded = ! radix_tree_preload ( GFP_KERNEL ) ; rcu_read_lock ( ) ; spin_lock_irq ( q -> queue_lock ) ; blkg = blkg_create ( & blkcg_root , q , new_blkg ) ; spin_unlock_irq ( q -> queue_lock ) ; rcu_read_unlock ( ) ; if ( preloaded ) radix_tree_preload_end ( ) ; <S2SV_StartBug> if ( IS_ERR ( blkg ) ) { <S2SV_EndBug> blkg_free ( new_blkg ) ; return PTR_ERR ( blkg ) ; <S2SV_StartBug> } <S2SV_EndBug> q -> root_blkg = blkg ; q -> root_rl . blkg = blkg ; ret = blk_throtl_init ( q ) ; if ( ret ) { spin_lock_irq ( q -> queue_lock ) ; blkg_destroy_all ( q ) ; spin_unlock_irq ( q -> queue_lock ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> blkg ) ) <S2SV_ModEnd> return PTR_ERR ( <S2SV_ModStart> blkg ) ; <S2SV_ModEnd> q -> root_blkg\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_do_fw_download ( int ioc , char __user * ufwbuf , size_t fwlen ) <S2SV_EndBug> { FWDownload_t * dlmsg ; <S2SV_StartBug> MPT_FRAME_HDR * mf ; <S2SV_EndBug> MPT_ADAPTER * iocp ; FWDownloadTCSGE_t * ptsge ; MptSge_t * sgl , * sgIn ; char * sgOut ; struct buflist * buflist ; struct buflist * bl ; dma_addr_t sgl_dma ; int ret ; int numfrags = 0 ; int maxfrags ; int n = 0 ; u32 sgdir ; u32 nib ; int fw_bytes_copied = 0 ; int i ; int sge_offset = 0 ; u16 iocstat ; pFWDownloadReply_t ReplyMsg = NULL ; unsigned long timeleft ; <S2SV_StartBug> if ( mpt_verify_adapter ( ioc , & iocp ) < 0 ) { <S2SV_EndBug> printk ( KERN_DEBUG MYNAM \"ioctl_fwdl<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , ioc ) ; return - ENODEV ; } else { if ( ( mf = mpt_get_msg_frame ( mptctl_id , iocp ) ) == NULL ) return - EAGAIN ; <S2SV_StartBug> } <S2SV_EndBug> dctlprintk ( iocp , printk ( MYIOC_s_DEBUG_FMT \"mptctl_do_fwdl<S2SV_blank>called.<S2SV_blank>mptctl_id<S2SV_blank>=<S2SV_blank>%xh.\\\\n\" , iocp -> name , mptctl_id ) ) ; dctlprintk ( iocp , printk ( MYIOC_s_DEBUG_FMT \"DbG:<S2SV_blank>kfwdl.bufp<S2SV_blank><S2SV_blank>=<S2SV_blank>%p\\\\n\" , iocp -> name , ufwbuf ) ) ; dctlprintk ( iocp , printk ( MYIOC_s_DEBUG_FMT \"DbG:<S2SV_blank>kfwdl.fwlen<S2SV_blank>=<S2SV_blank>%d\\\\n\" , <S2SV_StartBug> iocp -> name , ( int ) fwlen ) ) ; <S2SV_EndBug> dctlprintk ( iocp , printk ( MYIOC_s_DEBUG_FMT \"DbG:<S2SV_blank>kfwdl.ioc<S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%04xh\\\\n\" , iocp -> name , ioc ) ) ; dlmsg = ( FWDownload_t * ) mf ; ptsge = ( FWDownloadTCSGE_t * ) & dlmsg -> SGL ; sgOut = ( char * ) ( ptsge + 1 ) ; dlmsg -> ImageType = MPI_FW_DOWNLOAD_ITYPE_FW ; dlmsg -> Reserved = 0 ; dlmsg -> ChainOffset = 0 ; dlmsg -> Function = MPI_FUNCTION_FW_DOWNLOAD ; dlmsg -> Reserved1 [ 0 ] = dlmsg -> Reserved1 [ 1 ] = dlmsg -> Reserved1 [ 2 ] = 0 ; if ( iocp -> facts . MsgVersion >= MPI_VERSION_01_05 ) dlmsg -> MsgFlags = MPI_FW_DOWNLOAD_MSGFLGS_LAST_SEGMENT ; else dlmsg -> MsgFlags = 0 ; ptsge -> Reserved = 0 ; ptsge -> ContextSize = 0 ; ptsge -> DetailsLength = 12 ; ptsge -> Flags = MPI_SGE_FLAGS_TRANSACTION_ELEMENT ; ptsge -> Reserved_0100_Checksum = 0 ; ptsge -> ImageOffset = 0 ; ptsge -> ImageSize = cpu_to_le32 ( fwlen ) ; sgdir = 0x04000000 ; sge_offset = sizeof ( MPIHeader_t ) + sizeof ( FWDownloadTCSGE_t ) ; if ( ( sgl = kbuf_alloc_2_sgl ( fwlen , sgdir , sge_offset , & numfrags , & buflist , & sgl_dma , iocp ) ) == NULL ) return - ENOMEM ; maxfrags = ( iocp -> req_sz - sizeof ( MPIHeader_t ) - sizeof ( FWDownloadTCSGE_t ) ) / iocp -> SGE_size ; if ( numfrags > maxfrags ) { ret = - EMLINK ; goto fwdl_out ; } dctlprintk ( iocp , printk ( MYIOC_s_DEBUG_FMT \"DbG:<S2SV_blank>sgl<S2SV_blank>buffer<S2SV_blank>=<S2SV_blank>%p,<S2SV_blank>sgfrags<S2SV_blank>=<S2SV_blank>%d\\\\n\" , iocp -> name , sgl , numfrags ) ) ; ret = - EFAULT ; sgIn = sgl ; bl = buflist ; for ( i = 0 ; i < numfrags ; i ++ ) { nib = ( sgIn -> FlagsLength & 0x30000000 ) >> 28 ; if ( nib == 0 || nib == 3 ) { ; } else if ( sgIn -> Address ) { iocp -> add_sge ( sgOut , sgIn -> FlagsLength , sgIn -> Address ) ; n ++ ; if ( copy_from_user ( bl -> kptr , ufwbuf + fw_bytes_copied , bl -> len ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::_ioctl_fwdl<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>f/w<S2SV_blank>buffer<S2SV_blank>hunk#%d<S2SV_blank>@<S2SV_blank>%p\\\\n\" , iocp -> name , __FILE__ , __LINE__ , n , ufwbuf ) ; goto fwdl_out ; } fw_bytes_copied += bl -> len ; } sgIn ++ ; bl ++ ; sgOut += iocp -> SGE_size ; } DBG_DUMP_FW_DOWNLOAD ( iocp , ( u32 * ) mf , numfrags ) ; ReplyMsg = NULL ; SET_MGMT_MSG_CONTEXT ( iocp -> ioctl_cmds . msg_context , dlmsg -> MsgContext ) ; INITIALIZE_MGMT_STATUS ( iocp -> ioctl_cmds . status ) mpt_put_msg_frame ( mptctl_id , iocp , mf ) ; retry_wait : timeleft = wait_for_completion_timeout ( & iocp -> ioctl_cmds . done , HZ * 60 ) ; if ( ! ( iocp -> ioctl_cmds . status & MPT_MGMT_STATUS_COMMAND_GOOD ) ) { ret = - ETIME ; printk ( MYIOC_s_WARN_FMT \"%s:<S2SV_blank>failed\\\\n\" , iocp -> name , __func__ ) ; if ( iocp -> ioctl_cmds . status & MPT_MGMT_STATUS_DID_IOCRESET ) { mpt_free_msg_frame ( iocp , mf ) ; goto fwdl_out ; } if ( ! timeleft ) { printk ( MYIOC_s_WARN_FMT \"FW<S2SV_blank>download<S2SV_blank>timeout,<S2SV_blank>doorbell=0x%08x\\\\n\" , iocp -> name , mpt_GetIocState ( iocp , 0 ) ) ; mptctl_timeout_expired ( iocp , mf ) ; } else goto retry_wait ; goto fwdl_out ; } if ( ! ( iocp -> ioctl_cmds . status & MPT_MGMT_STATUS_RF_VALID ) ) { printk ( MYIOC_s_WARN_FMT \"%s:<S2SV_blank>failed\\\\n\" , iocp -> name , __func__ ) ; mpt_free_msg_frame ( iocp , mf ) ; ret = - ENODATA ; goto fwdl_out ; } if ( sgl ) kfree_sgl ( sgl , sgl_dma , buflist , iocp ) ; ReplyMsg = ( pFWDownloadReply_t ) iocp -> ioctl_cmds . reply ; iocstat = le16_to_cpu ( ReplyMsg -> IOCStatus ) & MPI_IOCSTATUS_MASK ; if ( iocstat == MPI_IOCSTATUS_SUCCESS ) { printk ( MYIOC_s_INFO_FMT \"F/W<S2SV_blank>update<S2SV_blank>successful!\\\\n\" , iocp -> name ) ; return 0 ; } else if ( iocstat == MPI_IOCSTATUS_INVALID_FUNCTION ) { printk ( MYIOC_s_WARN_FMT \"Hmmm...<S2SV_blank><S2SV_blank>F/W<S2SV_blank>download<S2SV_blank>not<S2SV_blank>supported!?!\\\\n\" , iocp -> name ) ; printk ( MYIOC_s_WARN_FMT \"(time<S2SV_blank>to<S2SV_blank>go<S2SV_blank>bang<S2SV_blank>on<S2SV_blank>somebodies<S2SV_blank>door)\\\\n\" , iocp -> name ) ; return - EBADRQC ; } else if ( iocstat == MPI_IOCSTATUS_BUSY ) { printk ( MYIOC_s_WARN_FMT \"IOC_BUSY!\\\\n\" , iocp -> name ) ; printk ( MYIOC_s_WARN_FMT \"(try<S2SV_blank>again<S2SV_blank>later?)\\\\n\" , iocp -> name ) ; return - EBUSY ; } else { printk ( MYIOC_s_WARN_FMT \"ioctl_fwdl()<S2SV_blank>returned<S2SV_blank>[bad]<S2SV_blank>status<S2SV_blank>=<S2SV_blank>%04xh\\\\n\" , iocp -> name , iocstat ) ; printk ( MYIOC_s_WARN_FMT \"(bad<S2SV_blank>VooDoo)\\\\n\" , iocp -> name ) ; return - ENOMSG ; } return 0 ; fwdl_out : CLEAR_MGMT_STATUS ( iocp -> ioctl_cmds . status ) ; SET_MGMT_MSG_CONTEXT ( iocp -> ioctl_cmds . msg_context , 0 ) ; kfree_sgl ( sgl , sgl_dma , buflist , iocp ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_do_fw_download ( MPT_ADAPTER * iocp <S2SV_ModEnd> , char __user <S2SV_ModStart> MPT_FRAME_HDR * mf <S2SV_ModEnd> ; FWDownloadTCSGE_t * <S2SV_ModStart> ; if ( <S2SV_ModEnd> ( mf = <S2SV_ModStart> - EAGAIN ; <S2SV_ModEnd> dctlprintk ( iocp <S2SV_ModStart> int ) fwlen <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6345\n\n```\nCWE-20 static void llc_sap_rcv ( struct llc_sap * sap , struct sk_buff * skb , struct sock * sk ) { struct llc_sap_state_ev * ev = llc_sap_ev ( skb ) ; ev -> type = LLC_SAP_EV_TYPE_PDU ; ev -> reason = 0 ; <S2SV_StartBug> skb -> sk = sk ; <S2SV_EndBug> llc_sap_state_process ( sap , skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; skb_orphan ( skb ) ; sock_hold ( sk ) ; <S2SV_ModStart> sk = sk ; skb -> destructor = sock_efree\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_get_compressed_data ( VP8_COMP * cpi , unsigned int * frame_flags , unsigned long * size , unsigned char * dest , unsigned char * dest_end , int64_t * time_stamp , int64_t * time_end , int flush ) { <S2SV_StartBug> # if HAVE_NEON <S2SV_EndBug> int64_t store_reg [ 8 ] ; # endif VP8_COMMON * cm ; struct vpx_usec_timer tsctimer ; struct vpx_usec_timer ticktimer ; struct vpx_usec_timer cmptimer ; YV12_BUFFER_CONFIG * force_src_buffer = NULL ; if ( ! cpi ) return - 1 ; cm = & cpi -> common ; if ( setjmp ( cpi -> common . error . jmp ) ) { cpi -> common . error . setjmp = 0 ; <S2SV_StartBug> return VPX_CODEC_CORRUPT_FRAME ; <S2SV_EndBug> } cpi -> common . error . setjmp = 1 ; <S2SV_StartBug> # if HAVE_NEON <S2SV_EndBug> # if CONFIG_RUNTIME_CPU_DETECT if ( cm -> cpu_caps & HAS_NEON ) # endif { vp8_push_neon ( store_reg ) ; } # endif vpx_usec_timer_start ( & cmptimer ) ; cpi -> source = NULL ; # if ! ( CONFIG_REALTIME_ONLY ) if ( cpi -> oxcf . error_resilient_mode == 0 && cpi -> oxcf . play_alternate && cpi -> source_alt_ref_pending ) { if ( ( cpi -> source = vp8_lookahead_peek ( cpi -> lookahead , cpi -> frames_till_gf_update_due , PEEK_FORWARD ) ) ) { cpi -> alt_ref_source = cpi -> source ; if ( cpi -> oxcf . arnr_max_frames > 0 ) { vp8_temporal_filter_prepare_c ( cpi , cpi -> frames_till_gf_update_due ) ; force_src_buffer = & cpi -> alt_ref_buffer ; } cpi -> frames_till_alt_ref_frame = cpi -> frames_till_gf_update_due ; cm -> refresh_alt_ref_frame = 1 ; cm -> refresh_golden_frame = 0 ; cm -> refresh_last_frame = 0 ; cm -> show_frame = 0 ; cpi -> source_alt_ref_pending = 0 ; cpi -> is_src_frame_alt_ref = 0 ; } } # endif if ( ! cpi -> source ) { if ( cpi -> pass == 1 && cm -> current_video_frame > 0 ) { if ( ( cpi -> last_source = vp8_lookahead_peek ( cpi -> lookahead , 1 , PEEK_BACKWARD ) ) == NULL ) return - 1 ; } if ( ( cpi -> source = vp8_lookahead_pop ( cpi -> lookahead , flush ) ) ) { cm -> show_frame = 1 ; cpi -> is_src_frame_alt_ref = cpi -> alt_ref_source && ( cpi -> source == cpi -> alt_ref_source ) ; if ( cpi -> is_src_frame_alt_ref ) cpi -> alt_ref_source = NULL ; } } if ( cpi -> source ) { cpi -> Source = force_src_buffer ? force_src_buffer : & cpi -> source -> img ; cpi -> un_scaled_source = cpi -> Source ; * time_stamp = cpi -> source -> ts_start ; * time_end = cpi -> source -> ts_end ; * frame_flags = cpi -> source -> flags ; if ( cpi -> pass == 1 && cm -> current_video_frame > 0 ) { cpi -> last_frame_unscaled_source = & cpi -> last_source -> img ; } } else { * size = 0 ; # if ! ( CONFIG_REALTIME_ONLY ) if ( flush && cpi -> pass == 1 && ! cpi -> twopass . first_pass_done ) { vp8_end_first_pass ( cpi ) ; cpi -> twopass . first_pass_done = 1 ; } # endif <S2SV_StartBug> # if HAVE_NEON <S2SV_EndBug> # if CONFIG_RUNTIME_CPU_DETECT if ( cm -> cpu_caps & HAS_NEON ) # endif { vp8_pop_neon ( store_reg ) ; } # endif return - 1 ; } if ( cpi -> source -> ts_start < cpi -> first_time_stamp_ever ) { cpi -> first_time_stamp_ever = cpi -> source -> ts_start ; cpi -> last_end_time_stamp_seen = cpi -> source -> ts_start ; } if ( cm -> show_frame ) { int64_t this_duration ; int step = 0 ; if ( cpi -> source -> ts_start == cpi -> first_time_stamp_ever ) { this_duration = cpi -> source -> ts_end - cpi -> source -> ts_start ; step = 1 ; } else { int64_t last_duration ; this_duration = cpi -> source -> ts_end - cpi -> last_end_time_stamp_seen ; last_duration = cpi -> last_end_time_stamp_seen - cpi -> last_time_stamp_seen ; if ( last_duration ) step = ( int ) ( ( ( this_duration - last_duration ) * 10 / last_duration ) ) ; } if ( this_duration ) { if ( step ) cpi -> ref_framerate = 10000000.0 / this_duration ; else { double avg_duration , interval ; interval = ( double ) ( cpi -> source -> ts_end - cpi -> first_time_stamp_ever ) ; if ( interval > 10000000.0 ) interval = 10000000 ; avg_duration = 10000000.0 / cpi -> ref_framerate ; avg_duration *= ( interval - avg_duration + this_duration ) ; avg_duration /= interval ; cpi -> ref_framerate = 10000000.0 / avg_duration ; } <S2SV_StartBug> if ( cpi -> oxcf . number_of_layers > 1 ) <S2SV_EndBug> { unsigned int i ; assert ( cpi -> oxcf . number_of_layers <= VPX_TS_MAX_LAYERS ) ; <S2SV_StartBug> for ( i = 0 ; i < cpi -> oxcf . number_of_layers ; i ++ ) <S2SV_EndBug> { LAYER_CONTEXT * lc = & cpi -> layer_context [ i ] ; lc -> framerate = cpi -> ref_framerate / cpi -> oxcf . rate_decimator [ i ] ; } } else vp8_new_framerate ( cpi , cpi -> ref_framerate ) ; } cpi -> last_time_stamp_seen = cpi -> source -> ts_start ; cpi -> last_end_time_stamp_seen = cpi -> source -> ts_end ; } if ( cpi -> oxcf . number_of_layers > 1 ) { int layer ; update_layer_contexts ( cpi ) ; <S2SV_StartBug> layer = cpi -> oxcf . layer_id [ <S2SV_EndBug> <S2SV_StartBug> cpi -> temporal_pattern_counter % cpi -> oxcf . periodicity ] ; <S2SV_EndBug> restore_layer_context ( cpi , layer ) ; vp8_new_framerate ( cpi , cpi -> layer_context [ layer ] . framerate ) ; } if ( cpi -> compressor_speed == 2 ) { vpx_usec_timer_start ( & tsctimer ) ; vpx_usec_timer_start ( & ticktimer ) ; } cpi -> lf_zeromv_pct = ( cpi -> zeromv_count * 100 ) / cm -> MBs ; # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING { int i ; const int num_part = ( 1 << cm -> multi_token_partition ) ; const unsigned long dest_size = dest_end - dest ; const int tok_part_buff_size = ( dest_size * 9 ) / ( 10 * num_part ) ; unsigned char * dp = dest ; cpi -> partition_d [ 0 ] = dp ; dp += dest_size / 10 ; cpi -> partition_d_end [ 0 ] = dp ; for ( i = 0 ; i < num_part ; i ++ ) { cpi -> partition_d [ i + 1 ] = dp ; dp += tok_part_buff_size ; cpi -> partition_d_end [ i + 1 ] = dp ; } } # endif * size = 0 ; vp8_clear_system_state ( ) ; cm -> frame_type = INTER_FRAME ; cm -> frame_flags = * frame_flags ; # if 0 if ( cm -> refresh_alt_ref_frame ) { cm -> refresh_golden_frame = 0 ; cm -> refresh_last_frame = 0 ; } else { cm -> refresh_golden_frame = 0 ; cm -> refresh_last_frame = 1 ; } # endif { int i = 0 ; for ( ; i < NUM_YV12_BUFFERS ; i ++ ) { if ( ! cm -> yv12_fb [ i ] . flags ) { cm -> new_fb_idx = i ; break ; } } assert ( i < NUM_YV12_BUFFERS ) ; } # if ! ( CONFIG_REALTIME_ONLY ) if ( cpi -> pass == 1 ) { Pass1Encode ( cpi , size , dest , frame_flags ) ; } else if ( cpi -> pass == 2 ) { Pass2Encode ( cpi , size , dest , dest_end , frame_flags ) ; } else # endif encode_frame_to_data_rate ( cpi , size , dest , dest_end , frame_flags ) ; if ( cpi -> compressor_speed == 2 ) { unsigned int duration , duration2 ; vpx_usec_timer_mark ( & tsctimer ) ; vpx_usec_timer_mark ( & ticktimer ) ; duration = ( int ) ( vpx_usec_timer_elapsed ( & ticktimer ) ) ; duration2 = ( unsigned int ) ( ( double ) duration / 2 ) ; if ( cm -> frame_type != KEY_FRAME ) { if ( cpi -> avg_encode_time == 0 ) cpi -> avg_encode_time = duration ; else cpi -> avg_encode_time = ( 7 * cpi -> avg_encode_time + duration ) >> 3 ; } if ( duration2 ) { { if ( cpi -> avg_pick_mode_time == 0 ) cpi -> avg_pick_mode_time = duration2 ; else cpi -> avg_pick_mode_time = ( 7 * cpi -> avg_pick_mode_time + duration2 ) >> 3 ; } } } if ( cm -> refresh_entropy_probs == 0 ) { <S2SV_StartBug> vpx_memcpy ( & cm -> fc , & cm -> lfc , sizeof ( cm -> fc ) ) ; <S2SV_EndBug> } if ( cm -> refresh_alt_ref_frame ) <S2SV_StartBug> vpx_memcpy ( & cpi -> lfc_a , & cm -> fc , sizeof ( cm -> fc ) ) ; <S2SV_EndBug> if ( cm -> refresh_golden_frame ) <S2SV_StartBug> vpx_memcpy ( & cpi -> lfc_g , & cm -> fc , sizeof ( cm -> fc ) ) ; <S2SV_EndBug> if ( cm -> refresh_last_frame ) <S2SV_StartBug> vpx_memcpy ( & cpi -> lfc_n , & cm -> fc , sizeof ( cm -> fc ) ) ; <S2SV_EndBug> if ( * size > 0 ) { cpi -> droppable = ! frame_is_reference ( cpi ) ; cm -> refresh_entropy_probs = 1 ; cm -> refresh_alt_ref_frame = 0 ; cm -> refresh_golden_frame = 0 ; cm -> refresh_last_frame = 1 ; cm -> frame_type = INTER_FRAME ; } if ( cpi -> oxcf . number_of_layers > 1 ) save_layer_context ( cpi ) ; vpx_usec_timer_mark ( & cmptimer ) ; cpi -> time_compress_data += vpx_usec_timer_elapsed ( & cmptimer ) ; if ( cpi -> b_calculate_psnr && cpi -> pass != 1 && cm -> show_frame ) { generate_psnr_packet ( cpi ) ; } # if CONFIG_INTERNAL_STATS if ( cpi -> pass != 1 ) { cpi -> bytes += * size ; if ( cm -> show_frame ) { cpi -> common . show_frame_mi = cpi -> common . mi ; cpi -> count ++ ; if ( cpi -> b_calculate_psnr ) { uint64_t ye , ue , ve ; double frame_psnr ; YV12_BUFFER_CONFIG * orig = cpi -> Source ; YV12_BUFFER_CONFIG * recon = cpi -> common . frame_to_show ; <S2SV_StartBug> int y_samples = orig -> y_height * orig -> y_width ; <S2SV_EndBug> <S2SV_StartBug> int uv_samples = orig -> uv_height * orig -> uv_width ; <S2SV_EndBug> int t_samples = y_samples + 2 * uv_samples ; <S2SV_StartBug> double sq_error , sq_error2 ; <S2SV_EndBug> ye = calc_plane_error ( orig -> y_buffer , orig -> y_stride , <S2SV_StartBug> recon -> y_buffer , recon -> y_stride , orig -> y_width , orig -> y_height ) ; <S2SV_EndBug> <S2SV_StartBug> ue = calc_plane_error ( orig -> u_buffer , orig -> uv_stride , <S2SV_EndBug> <S2SV_StartBug> recon -> u_buffer , recon -> uv_stride , orig -> uv_width , orig -> uv_height ) ; <S2SV_EndBug> ve = calc_plane_error ( orig -> v_buffer , orig -> uv_stride , recon -> v_buffer , recon -> uv_stride , orig -> uv_width , orig -> uv_height ) ; sq_error = ( double ) ( ye + ue + ve ) ; frame_psnr = vpx_sse_to_psnr ( t_samples , 255.0 , sq_error ) ; cpi -> total_y += vpx_sse_to_psnr ( y_samples , 255.0 , ( double ) ye ) ; cpi -> total_u += vpx_sse_to_psnr ( uv_samples , 255.0 , ( double ) ue ) ; cpi -> total_v += vpx_sse_to_psnr ( uv_samples , 255.0 , ( double ) ve ) ; cpi -> total_sq_error += sq_error ; cpi -> total += frame_psnr ; # if CONFIG_POSTPROC { YV12_BUFFER_CONFIG * pp = & cm -> post_proc_buffer ; <S2SV_StartBug> double frame_psnr2 , frame_ssim2 = 0 ; <S2SV_EndBug> double weight = 0 ; vp8_deblock ( cm , cm -> frame_to_show , & cm -> post_proc_buffer , cm -> filter_level * 10 / 6 , 1 , 0 ) ; vp8_clear_system_state ( ) ; ye = calc_plane_error ( orig -> y_buffer , orig -> y_stride , <S2SV_StartBug> pp -> y_buffer , pp -> y_stride , orig -> y_width , orig -> y_height ) ; <S2SV_EndBug> <S2SV_StartBug> ue = calc_plane_error ( orig -> u_buffer , orig -> uv_stride , <S2SV_EndBug> <S2SV_StartBug> pp -> u_buffer , pp -> uv_stride , orig -> uv_width , orig -> uv_height ) ; <S2SV_EndBug> ve = calc_plane_error ( orig -> v_buffer , orig -> uv_stride , pp -> v_buffer , pp -> uv_stride , orig -> uv_width , orig -> uv_height ) ; sq_error2 = ( double ) ( ye + ue + ve ) ; frame_psnr2 = vpx_sse_to_psnr ( t_samples , 255.0 , sq_error2 ) ; cpi -> totalp_y += vpx_sse_to_psnr ( y_samples , 255.0 , ( double ) ye ) ; cpi -> totalp_u += vpx_sse_to_psnr ( uv_samples , 255.0 , ( double ) ue ) ; cpi -> totalp_v += vpx_sse_to_psnr ( uv_samples , 255.0 , ( double ) ve ) ; cpi -> total_sq_error2 += sq_error2 ; cpi -> totalp += frame_psnr2 ; <S2SV_StartBug> frame_ssim2 = vp8_calc_ssim ( cpi -> Source , <S2SV_EndBug> <S2SV_StartBug> & cm -> post_proc_buffer , 1 , & weight ) ; <S2SV_EndBug> cpi -> summed_quality += frame_ssim2 * weight ; cpi -> summed_weights += weight ; if ( cpi -> oxcf . number_of_layers > 1 ) { unsigned int i ; for ( i = cpi -> current_layer ; i < cpi -> oxcf . number_of_layers ; i ++ ) { cpi -> frames_in_layer [ i ] ++ ; cpi -> bytes_in_layer [ i ] += * size ; cpi -> sum_psnr [ i ] += frame_psnr ; cpi -> sum_psnr_p [ i ] += frame_psnr2 ; cpi -> total_error2 [ i ] += sq_error ; cpi -> total_error2_p [ i ] += sq_error2 ; cpi -> sum_ssim [ i ] += frame_ssim2 * weight ; cpi -> sum_weights [ i ] += weight ; } } } # endif } if ( cpi -> b_calculate_ssimg ) { double y , u , v , frame_all ; <S2SV_StartBug> frame_all = vp8_calc_ssimg ( cpi -> Source , cm -> frame_to_show , <S2SV_EndBug> & y , & u , & v ) ; if ( cpi -> oxcf . number_of_layers > 1 ) { unsigned int i ; for ( i = cpi -> current_layer ; i < cpi -> oxcf . number_of_layers ; i ++ ) { if ( ! cpi -> b_calculate_psnr ) cpi -> frames_in_layer [ i ] ++ ; cpi -> total_ssimg_y_in_layer [ i ] += y ; cpi -> total_ssimg_u_in_layer [ i ] += u ; cpi -> total_ssimg_v_in_layer [ i ] += v ; cpi -> total_ssimg_all_in_layer [ i ] += frame_all ; } } else { cpi -> total_ssimg_y += y ; cpi -> total_ssimg_u += u ; cpi -> total_ssimg_v += v ; cpi -> total_ssimg_all += frame_all ; } } } } # if 0 if ( cpi -> common . frame_type != 0 && cpi -> common . base_qindex == cpi -> oxcf . worst_allowed_q ) { skiptruecount += cpi -> skip_true_count ; skipfalsecount += cpi -> skip_false_count ; } # endif # if 0 if ( cpi -> pass != 1 ) { FILE * f = fopen ( \"skip.stt\" , \"a\" ) ; fprintf ( f , \"frame:%4d<S2SV_blank>flags:%4x<S2SV_blank>Q:%4d<S2SV_blank>P:%4d<S2SV_blank>Size:%5d\\\\n\" , cpi -> common . current_video_frame , * frame_flags , cpi -> common . base_qindex , cpi -> prob_skip_false , * size ) ; if ( cpi -> is_src_frame_alt_ref == 1 ) fprintf ( f , \"skipcount:<S2SV_blank>%4d<S2SV_blank>framesize:<S2SV_blank>%d\\\\n\" , cpi -> skip_true_count , * size ) ; fclose ( f ) ; } # endif # endif <S2SV_StartBug> # if HAVE_NEON <S2SV_EndBug> # if CONFIG_RUNTIME_CPU_DETECT if ( cm -> cpu_caps & HAS_NEON ) # endif { vp8_pop_neon ( store_reg ) ; } # endif cpi -> common . error . setjmp = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flush ) { <S2SV_ModEnd> VP8_COMMON * cm <S2SV_ModStart> = 0 ; vp8_clear_system_state ( ) ; <S2SV_ModStart> = 1 ; <S2SV_ModEnd> vpx_usec_timer_start ( & <S2SV_ModStart> } # endif <S2SV_ModEnd> return - 1 <S2SV_ModStart> avg_duration ; } # if CONFIG_MULTI_RES_ENCODING if ( cpi -> oxcf . mr_total_resolutions > 1 ) { LOWER_RES_FRAME_INFO * low_res_frame_info = ( LOWER_RES_FRAME_INFO * ) cpi -> oxcf . mr_low_res_mode_info ; if ( cpi -> oxcf . mr_encoder_id ) { cpi -> ref_framerate = low_res_frame_info -> low_res_framerate ; } else { low_res_frame_info -> low_res_framerate = cpi -> ref_framerate ; } } # endif <S2SV_ModStart> oxcf . number_of_layers && i < VPX_TS_MAX_LAYERS ; ++ i <S2SV_ModEnd> ) { LAYER_CONTEXT <S2SV_ModStart> cpi ) ; if ( cpi -> temporal_layer_id >= 0 ) { layer = cpi -> temporal_layer_id ; } else { <S2SV_ModStart> periodicity ] ; } <S2SV_ModStart> 0 ) { memcpy <S2SV_ModEnd> ( & cm <S2SV_ModStart> -> refresh_alt_ref_frame ) memcpy <S2SV_ModEnd> ( & cpi <S2SV_ModStart> -> refresh_golden_frame ) memcpy <S2SV_ModEnd> ( & cpi <S2SV_ModStart> -> refresh_last_frame ) memcpy <S2SV_ModEnd> ( & cpi <S2SV_ModStart> . frame_to_show ; unsigned int y_width = cpi -> common . Width ; unsigned int y_height = cpi -> common . Height ; unsigned int uv_width = ( y_width + 1 ) / 2 ; unsigned int uv_height = ( y_height + 1 ) / 2 ; <S2SV_ModStart> int y_samples = y_height * <S2SV_ModEnd> y_width ; int <S2SV_ModStart> int uv_samples = uv_height * <S2SV_ModEnd> uv_width ; int <S2SV_ModStart> ; double sq_error <S2SV_ModEnd> ; ye = <S2SV_ModStart> -> y_stride , y_width , y_height ) ; ue = calc_plane_error ( orig -> u_buffer <S2SV_ModEnd> , orig -> <S2SV_ModStart> , orig -> uv_stride , recon -> u_buffer , recon -> uv_stride , uv_width , uv_height ) ; ve <S2SV_ModEnd> = calc_plane_error ( <S2SV_ModStart> ( orig -> v_buffer <S2SV_ModEnd> , orig -> <S2SV_ModStart> , recon -> v_buffer <S2SV_ModEnd> , recon -> <S2SV_ModStart> -> uv_stride , uv_width , <S2SV_ModEnd> uv_height ) ; <S2SV_ModStart> post_proc_buffer ; double sq_error2 ; double <S2SV_ModStart> -> y_stride , y_width , y_height ) ; ue = calc_plane_error ( orig -> u_buffer <S2SV_ModEnd> , orig -> <S2SV_ModStart> , orig -> uv_stride , pp -> u_buffer , pp -> uv_stride , uv_width , uv_height ) ; ve <S2SV_ModEnd> = calc_plane_error ( <S2SV_ModStart> ( orig -> v_buffer <S2SV_ModEnd> , orig -> <S2SV_ModStart> , pp -> v_buffer <S2SV_ModEnd> , pp -> <S2SV_ModStart> -> uv_stride , uv_width , <S2SV_ModEnd> uv_height ) ; <S2SV_ModStart> ; frame_ssim2 = vpx_calc_ssim <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> cm -> post_proc_buffer <S2SV_ModEnd> , & weight <S2SV_ModStart> ; frame_all = vpx_calc_ssimg <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> endif # endif <S2SV_ModEnd> cpi -> common\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0278\n\n```\nCWE-264 static void uv__process_child_init ( const uv_process_options_t * options , int stdio_count , int ( * pipes ) [ 2 ] , int error_fd ) { int close_fd ; int use_fd ; int fd ; if ( options -> flags & UV_PROCESS_DETACHED ) setsid ( ) ; for ( fd = 0 ; fd < stdio_count ; fd ++ ) { close_fd = pipes [ fd ] [ 0 ] ; use_fd = pipes [ fd ] [ 1 ] ; if ( use_fd < 0 ) { if ( fd >= 3 ) continue ; else { use_fd = open ( \"/dev/null\" , fd == 0 ? O_RDONLY : O_RDWR ) ; close_fd = use_fd ; if ( use_fd == - 1 ) { uv__write_int ( error_fd , - errno ) ; perror ( \"failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>stdio\" ) ; _exit ( 127 ) ; } } } if ( fd == use_fd ) uv__cloexec ( use_fd , 0 ) ; else dup2 ( use_fd , fd ) ; if ( fd <= 2 ) uv__nonblock ( fd , 0 ) ; if ( close_fd != - 1 ) uv__close ( close_fd ) ; } for ( fd = 0 ; fd < stdio_count ; fd ++ ) { use_fd = pipes [ fd ] [ 1 ] ; if ( use_fd >= 0 && fd != use_fd ) close ( use_fd ) ; } if ( options -> cwd != NULL && chdir ( options -> cwd ) ) { uv__write_int ( error_fd , - errno ) ; perror ( \"chdir()\" ) ; _exit ( 127 ) ; } <S2SV_StartBug> if ( ( options -> flags & UV_PROCESS_SETGID ) && setgid ( options -> gid ) ) { <S2SV_EndBug> uv__write_int ( error_fd , - errno ) ; perror ( \"setgid()\" ) ; _exit ( 127 ) ; } if ( ( options -> flags & UV_PROCESS_SETUID ) && setuid ( options -> uid ) ) { uv__write_int ( error_fd , - errno ) ; perror ( \"setuid()\" ) ; _exit ( 127 ) ; } if ( options -> env != NULL ) { environ = options -> env ; } execvp ( options -> file , options -> args ) ; uv__write_int ( error_fd , - errno ) ; perror ( \"execvp()\" ) ; _exit ( 127 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( options -> flags & ( UV_PROCESS_SETUID | UV_PROCESS_SETGID ) ) { SAVE_ERRNO ( setgroups ( 0 , NULL ) ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13137\n\n```\nCWE-401 static Image * ReadPSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define BoundingBox \"BoundingBox:\" # define BeginDocument \"BeginDocument:\" # define BeginXMPPacket \"<?xpacket<S2SV_blank>begin=\" # define EndXMPPacket \"<?xpacket<S2SV_blank>end=\" # define ICCProfile \"BeginICCProfile:\" # define CMYKCustomColor \"CMYKCustomColor:\" # define CMYKProcessColor \"CMYKProcessColor:\" # define DocumentMedia \"DocumentMedia:\" # define DocumentCustomColors \"DocumentCustomColors:\" # define DocumentProcessColors \"DocumentProcessColors:\" # define EndDocument \"EndDocument:\" # define HiResBoundingBox \"HiResBoundingBox:\" # define ImageData \"ImageData:\" # define PageBoundingBox \"PageBoundingBox:\" # define LanguageLevel \"LanguageLevel:\" # define PageMedia \"PageMedia:\" # define Pages \"Pages:\" # define PhotoshopProfile \"BeginPhotoshop:\" # define PostscriptLevel \"!PS-\" # define RenderPostscriptText \"<S2SV_blank><S2SV_blank>Rendering<S2SV_blank>Postscript...<S2SV_blank><S2SV_blank>\" # define SpotColor \"+<S2SV_blank>\" char command [ MagickPathExtent ] , * density , filename [ MagickPathExtent ] , geometry [ MagickPathExtent ] , input_filename [ MagickPathExtent ] , message [ MagickPathExtent ] , * options , postscript_filename [ MagickPathExtent ] ; const char * option ; const DelegateInfo * delegate_info ; GeometryInfo geometry_info ; Image * image , * next , * postscript_image ; ImageInfo * read_info ; int c , file ; MagickBooleanType cmyk , fitPage , skip , status ; MagickStatusType flags ; PointInfo delta , resolution ; RectangleInfo page ; register char * p ; register ssize_t i ; SegmentInfo bounds , hires_bounds ; short int hex_digits [ 256 ] ; size_t length ; ssize_t count , priority ; StringInfo * profile ; unsigned long columns , extent , language_level , pages , rows , scene , spotcolor ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } status = AcquireUniqueSymbolicLink ( image_info -> filename , input_filename ) ; if ( status == MagickFalse ) { ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( hex_digits , 0 , sizeof ( hex_digits ) ) ; hex_digits [ ( int ) '0' ] = 0 ; hex_digits [ ( int ) '1' ] = 1 ; hex_digits [ ( int ) '2' ] = 2 ; hex_digits [ ( int ) '3' ] = 3 ; hex_digits [ ( int ) '4' ] = 4 ; hex_digits [ ( int ) '5' ] = 5 ; hex_digits [ ( int ) '6' ] = 6 ; hex_digits [ ( int ) '7' ] = 7 ; hex_digits [ ( int ) '8' ] = 8 ; hex_digits [ ( int ) '9' ] = 9 ; hex_digits [ ( int ) 'a' ] = 10 ; hex_digits [ ( int ) 'b' ] = 11 ; hex_digits [ ( int ) 'c' ] = 12 ; hex_digits [ ( int ) 'd' ] = 13 ; hex_digits [ ( int ) 'e' ] = 14 ; hex_digits [ ( int ) 'f' ] = 15 ; hex_digits [ ( int ) 'A' ] = 10 ; hex_digits [ ( int ) 'B' ] = 11 ; hex_digits [ ( int ) 'C' ] = 12 ; hex_digits [ ( int ) 'D' ] = 13 ; hex_digits [ ( int ) 'E' ] = 14 ; hex_digits [ ( int ) 'F' ] = 15 ; delta . x = DefaultResolution ; delta . y = DefaultResolution ; if ( ( image -> resolution . x == 0.0 ) || ( image -> resolution . y == 0.0 ) ) { flags = ParseGeometry ( PSDensityGeometry , & geometry_info ) ; image -> resolution . x = geometry_info . rho ; image -> resolution . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> resolution . y = image -> resolution . x ; } if ( image_info -> density != ( char * ) NULL ) { flags = ParseGeometry ( image_info -> density , & geometry_info ) ; image -> resolution . x = geometry_info . rho ; image -> resolution . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> resolution . y = image -> resolution . x ; } ( void ) ParseAbsoluteGeometry ( PSPageGeometry , & page ) ; if ( image_info -> page != ( char * ) NULL ) ( void ) ParseAbsoluteGeometry ( image_info -> page , & page ) ; resolution = image -> resolution ; page . width = ( size_t ) ceil ( ( double ) ( page . width * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * resolution . y / delta . y ) - 0.5 ) ; ( void ) memset ( & bounds , 0 , sizeof ( bounds ) ) ; ( void ) memset ( command , 0 , sizeof ( command ) ) ; cmyk = image_info -> colorspace == CMYKColorspace ? MagickTrue : MagickFalse ; ( void ) memset ( & hires_bounds , 0 , sizeof ( hires_bounds ) ) ; columns = 0 ; rows = 0 ; priority = 0 ; rows = 0 ; extent = 0 ; spotcolor = 0 ; language_level = 1 ; pages = ( ~ 0UL ) ; skip = MagickFalse ; p = command ; for ( c = ReadBlobByte ( image ) ; c != EOF ; c = ReadBlobByte ( image ) ) { * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MagickPathExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( BeginDocument , command , strlen ( BeginDocument ) ) == 0 ) skip = MagickTrue ; if ( LocaleNCompare ( EndDocument , command , strlen ( EndDocument ) ) == 0 ) skip = MagickFalse ; if ( skip != MagickFalse ) continue ; if ( LocaleNCompare ( PostscriptLevel , command , strlen ( PostscriptLevel ) ) == 0 ) { ( void ) SetImageProperty ( image , \"ps:Level\" , command + 4 , exception ) ; if ( GlobExpression ( command , \"*EPSF-*\" , MagickTrue ) != MagickFalse ) pages = 1 ; } if ( LocaleNCompare ( LanguageLevel , command , strlen ( LanguageLevel ) ) == 0 ) ( void ) sscanf ( command , LanguageLevel \"<S2SV_blank>%lu\" , & language_level ) ; if ( LocaleNCompare ( Pages , command , strlen ( Pages ) ) == 0 ) ( void ) sscanf ( command , Pages \"<S2SV_blank>%lu\" , & pages ) ; if ( LocaleNCompare ( ImageData , command , strlen ( ImageData ) ) == 0 ) ( void ) sscanf ( command , ImageData \"<S2SV_blank>%lu<S2SV_blank>%lu\" , & columns , & rows ) ; length = strlen ( DocumentProcessColors ) ; if ( LocaleNCompare ( DocumentProcessColors , command , length ) == 0 ) { if ( ( GlobExpression ( command , \"*Cyan*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Magenta*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Yellow*\" , MagickTrue ) != MagickFalse ) ) cmyk = MagickTrue ; } if ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) cmyk = MagickTrue ; if ( LocaleNCompare ( CMYKProcessColor , command , strlen ( CMYKProcessColor ) ) == 0 ) cmyk = MagickTrue ; length = strlen ( DocumentCustomColors ) ; if ( ( LocaleNCompare ( DocumentCustomColors , command , length ) == 0 ) || ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) || ( LocaleNCompare ( SpotColor , command , strlen ( SpotColor ) ) == 0 ) ) { char property [ MagickPathExtent ] , * value ; register char * q ; ( void ) FormatLocaleString ( property , MagickPathExtent , \"ps:SpotColor-%.20g\" , ( double ) ( spotcolor ++ ) ) ; for ( q = command ; * q != '\\\\0' ; q ++ ) if ( isspace ( ( int ) ( unsigned char ) * q ) != 0 ) break ; value = ConstantString ( q ) ; ( void ) SubstituteString ( & value , \"(\" , \"\" ) ; ( void ) SubstituteString ( & value , \")\" , \"\" ) ; ( void ) StripString ( value ) ; if ( * value != '\\\\0' ) ( void ) SetImageProperty ( image , property , value , exception ) ; value = DestroyString ( value ) ; continue ; } if ( image_info -> page != ( char * ) NULL ) continue ; count = 0 ; i = 0 ; if ( LocaleNCompare ( BoundingBox , command , strlen ( BoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , BoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 2 ; } if ( LocaleNCompare ( DocumentMedia , command , strlen ( DocumentMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , DocumentMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( HiResBoundingBox , command , strlen ( HiResBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , HiResBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 3 ; } if ( LocaleNCompare ( PageBoundingBox , command , strlen ( PageBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( PageMedia , command , strlen ( PageMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( ( count != 4 ) || ( i < ( ssize_t ) priority ) ) continue ; if ( ( fabs ( bounds . x2 - bounds . x1 ) <= fabs ( hires_bounds . x2 - hires_bounds . x1 ) ) || ( fabs ( bounds . y2 - bounds . y1 ) <= fabs ( hires_bounds . y2 - hires_bounds . y1 ) ) ) if ( i == ( ssize_t ) priority ) continue ; hires_bounds = bounds ; priority = i ; } if ( ( fabs ( hires_bounds . x2 - hires_bounds . x1 ) >= MagickEpsilon ) && ( fabs ( hires_bounds . y2 - hires_bounds . y1 ) >= MagickEpsilon ) ) { ( void ) FormatLocaleString ( geometry , MagickPathExtent , \"%gx%g%+.15g%+.15g\" , hires_bounds . x2 - hires_bounds . x1 , hires_bounds . y2 - hires_bounds . y1 , hires_bounds . x1 , hires_bounds . y1 ) ; ( void ) SetImageProperty ( image , \"ps:HiResBoundingBox\" , geometry , exception ) ; page . width = ( size_t ) ceil ( ( double ) ( ( hires_bounds . x2 - hires_bounds . x1 ) * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( ( hires_bounds . y2 - hires_bounds . y1 ) * resolution . y / delta . y ) - 0.5 ) ; } fitPage = MagickFalse ; option = GetImageOption ( image_info , \"eps:fit-page\" ) ; if ( option != ( char * ) NULL ) { char * page_geometry ; page_geometry = GetPageGeometry ( option ) ; flags = ParseMetaGeometry ( page_geometry , & page . x , & page . y , & page . width , & page . height ) ; if ( flags == NoValue ) { ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , OptionError , <S2SV_StartBug> \"InvalidGeometry\" , \"`%s\\'\" , option ) ; <S2SV_EndBug> image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } page . width = ( size_t ) ceil ( ( double ) ( page . width * image -> resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * image -> resolution . y / delta . y ) - 0.5 ) ; page_geometry = DestroyString ( page_geometry ) ; fitPage = MagickTrue ; } if ( IssRGBCompatibleColorspace ( image_info -> colorspace ) != MagickFalse ) cmyk = MagickFalse ; file = AcquireUniqueFileResource ( postscript_filename ) ; if ( file == - 1 ) { ThrowFileException ( exception , FileOpenError , \"UnableToOpenFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( command , \"/setpagedevice<S2SV_blank>{pop}<S2SV_blank>bind<S2SV_blank>1<S2SV_blank>index<S2SV_blank>where<S2SV_blank>{\" \"dup<S2SV_blank>wcheck<S2SV_blank>{3<S2SV_blank>1<S2SV_blank>roll<S2SV_blank>put}<S2SV_blank>{pop<S2SV_blank>def}<S2SV_blank>ifelse}<S2SV_blank>{def}<S2SV_blank>ifelse\\\\n\" \"<</UseCIEColor<S2SV_blank>true>>setpagedevice\\\\n\" , MagickPathExtent ) ; count = write ( file , command , ( unsigned int ) strlen ( command ) ) ; if ( image_info -> page == ( char * ) NULL ) { char translate_geometry [ MagickPathExtent ] ; ( void ) FormatLocaleString ( translate_geometry , MagickPathExtent , \"%g<S2SV_blank>%g<S2SV_blank>translate\\\\n\" , - bounds . x1 , - bounds . y1 ) ; count = write ( file , translate_geometry , ( unsigned int ) strlen ( translate_geometry ) ) ; } file = close ( file ) - 1 ; if ( image_info -> monochrome != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:mono\" , ( char * ) NULL , exception ) ; else if ( cmyk != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:cmyk\" , ( char * ) NULL , exception ) ; else delegate_info = GetDelegateInfo ( \"ps:alpha\" , ( char * ) NULL , exception ) ; if ( delegate_info == ( const DelegateInfo * ) NULL ) { ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } density = AcquireString ( \"\" ) ; options = AcquireString ( \"\" ) ; ( void ) FormatLocaleString ( density , MagickPathExtent , \"%gx%g\" , resolution . x , resolution . y ) ; ( void ) FormatLocaleString ( options , MagickPathExtent , \"-g%.20gx%.20g<S2SV_blank>\" , ( double ) page . width , ( double ) page . height ) ; read_info = CloneImageInfo ( image_info ) ; * read_info -> magick = '\\\\0' ; if ( read_info -> number_scenes != 0 ) { char pages [ MagickPathExtent ] ; ( void ) FormatLocaleString ( pages , MagickPathExtent , \"-dFirstPage=%.20g<S2SV_blank>\" \"-dLastPage=%.20g<S2SV_blank>\" , ( double ) read_info -> scene + 1 , ( double ) ( read_info -> scene + read_info -> number_scenes ) ) ; ( void ) ConcatenateMagickString ( options , pages , MagickPathExtent ) ; read_info -> number_scenes = 0 ; if ( read_info -> scenes != ( char * ) NULL ) * read_info -> scenes = '\\\\0' ; } if ( * image_info -> magick == 'E' ) { option = GetImageOption ( image_info , \"eps:use-cropbox\" ) ; if ( ( option == ( const char * ) NULL ) || ( IsStringTrue ( option ) != MagickFalse ) ) ( void ) ConcatenateMagickString ( options , \"-dEPSCrop<S2SV_blank>\" , MagickPathExtent ) ; if ( fitPage != MagickFalse ) ( void ) ConcatenateMagickString ( options , \"-dEPSFitPage<S2SV_blank>\" , MagickPathExtent ) ; } ( void ) CopyMagickString ( filename , read_info -> filename , MagickPathExtent ) ; ( void ) AcquireUniqueFilename ( filename ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; ( void ) ConcatenateMagickString ( filename , \"%d\" , MagickPathExtent ) ; ( void ) FormatLocaleString ( command , MagickPathExtent , GetDelegateCommands ( delegate_info ) , read_info -> antialias != MagickFalse ? 4 : 1 , read_info -> antialias != MagickFalse ? 4 : 1 , density , options , filename , postscript_filename , input_filename ) ; options = DestroyString ( options ) ; density = DestroyString ( density ) ; * message = '\\\\0' ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; ( void ) InterpretImageFilename ( image_info , image , filename , 1 , read_info -> filename , exception ) ; if ( ( status == MagickFalse ) || ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) ) { ( void ) ConcatenateMagickString ( command , \"<S2SV_blank>-c<S2SV_blank>showpage\" , MagickPathExtent ) ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; } ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; ( void ) RelinquishUniqueFileResource ( input_filename ) ; postscript_image = ( Image * ) NULL ; if ( status == MagickFalse ) for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename , exception ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; } else for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename , exception ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; read_info -> blob = NULL ; read_info -> length = 0 ; next = ReadImage ( read_info , exception ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; if ( next == ( Image * ) NULL ) break ; AppendImageToList ( & postscript_image , next ) ; } ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( postscript_image == ( Image * ) NULL ) { if ( * message != '\\\\0' ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , DelegateError , \"PostscriptDelegateFailed\" , \"`%s\\'\" , message ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( LocaleCompare ( postscript_image -> magick , \"BMP\" ) == 0 ) { Image * cmyk_image ; cmyk_image = ConsolidateCMYKImages ( postscript_image , exception ) ; if ( cmyk_image != ( Image * ) NULL ) { postscript_image = DestroyImageList ( postscript_image ) ; postscript_image = cmyk_image ; } } ( void ) SeekBlob ( image , 0 , SEEK_SET ) ; for ( c = ReadBlobByte ( image ) ; c != EOF ; c = ReadBlobByte ( image ) ) { * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MagickPathExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( BeginDocument , command , strlen ( BeginDocument ) ) == 0 ) skip = MagickTrue ; if ( LocaleNCompare ( EndDocument , command , strlen ( EndDocument ) ) == 0 ) skip = MagickFalse ; if ( skip != MagickFalse ) continue ; if ( LocaleNCompare ( ICCProfile , command , strlen ( ICCProfile ) ) == 0 ) { unsigned char * datum ; profile = AcquireStringInfo ( MagickPathExtent ) ; datum = GetStringInfoDatum ( profile ) ; for ( i = 0 ; ( c = ProfileInteger ( image , hex_digits ) ) != EOF ; i ++ ) { if ( i >= ( ssize_t ) GetStringInfoLength ( profile ) ) { SetStringInfoLength ( profile , ( size_t ) i << 1 ) ; datum = GetStringInfoDatum ( profile ) ; } datum [ i ] = ( unsigned char ) c ; } SetStringInfoLength ( profile , ( size_t ) i + 1 ) ; ( void ) SetImageProfile ( image , \"icc\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; continue ; } if ( LocaleNCompare ( PhotoshopProfile , command , strlen ( PhotoshopProfile ) ) == 0 ) { unsigned char * q ; count = ( ssize_t ) sscanf ( command , PhotoshopProfile \"<S2SV_blank>%lu\" , & extent ) ; if ( count != 1 ) continue ; length = extent ; if ( ( MagickSizeType ) length > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; if ( profile != ( StringInfo * ) NULL ) { q = GetStringInfoDatum ( profile ) ; for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) * q ++ = ( unsigned char ) ProfileInteger ( image , hex_digits ) ; ( void ) SetImageProfile ( image , \"8bim\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; } continue ; } if ( LocaleNCompare ( BeginXMPPacket , command , strlen ( BeginXMPPacket ) ) == 0 ) { p = command ; profile = StringToStringInfo ( command ) ; for ( i = ( ssize_t ) GetStringInfoLength ( profile ) - 1 ; c != EOF ; i ++ ) { SetStringInfoLength ( profile , ( size_t ) ( i + 1 ) ) ; c = ReadBlobByte ( image ) ; GetStringInfoDatum ( profile ) [ i ] = ( unsigned char ) c ; * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MagickPathExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( EndXMPPacket , command , strlen ( EndXMPPacket ) ) == 0 ) break ; } SetStringInfoLength ( profile , ( size_t ) i ) ; ( void ) SetImageProfile ( image , \"xmp\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; continue ; } } ( void ) CloseBlob ( image ) ; if ( image_info -> number_scenes != 0 ) { Image * clone_image ; for ( i = 0 ; i < ( ssize_t ) image_info -> scene ; i ++ ) { clone_image = CloneImage ( postscript_image , 1 , 1 , MagickTrue , exception ) ; if ( clone_image != ( Image * ) NULL ) PrependImageToList ( & postscript_image , clone_image ) ; } } do { ( void ) CopyMagickString ( postscript_image -> filename , filename , MagickPathExtent ) ; ( void ) CopyMagickString ( postscript_image -> magick , image -> magick , MagickPathExtent ) ; if ( columns != 0 ) postscript_image -> magick_columns = columns ; if ( rows != 0 ) postscript_image -> magick_rows = rows ; postscript_image -> page = page ; ( void ) CloneImageProfiles ( postscript_image , image ) ; ( void ) CloneImageProperties ( postscript_image , image ) ; next = SyncNextImageInList ( postscript_image ) ; if ( next != ( Image * ) NULL ) postscript_image = next ; } while ( next != ( Image * ) NULL ) ; image = DestroyImageList ( image ) ; scene = 0 ; for ( next = GetFirstImageInList ( postscript_image ) ; next != ( Image * ) NULL ; ) { next -> scene = scene ++ ; next = GetNextImageInList ( next ) ; } return ( GetFirstImageInList ( postscript_image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"`%s\\'\" , option ) ; page_geometry = DestroyString ( page_geometry\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20387\n\n```\nCWE-125 Id repodata_schema2id ( Repodata * data , Id * schema , int create ) { int h , len , i ; Id * sp , cid ; Id * schematahash ; if ( ! * schema ) return 0 ; if ( ( schematahash = data -> schematahash ) == 0 ) { data -> schematahash = schematahash = solv_calloc ( 256 , sizeof ( Id ) ) ; for ( i = 1 ; i < data -> nschemata ; i ++ ) { for ( sp = data -> schemadata + data -> schemata [ i ] , h = 0 ; * sp ; ) h = h * 7 + * sp ++ ; h &= 255 ; schematahash [ h ] = i ; } data -> schemadata = solv_extend_resize ( data -> schemadata , data -> schemadatalen , sizeof ( Id ) , SCHEMATADATA_BLOCK ) ; data -> schemata = solv_extend_resize ( data -> schemata , data -> nschemata , sizeof ( Id ) , SCHEMATA_BLOCK ) ; } for ( sp = schema , len = 0 , h = 0 ; * sp ; len ++ ) h = h * 7 + * sp ++ ; h &= 255 ; len ++ ; cid = schematahash [ h ] ; if ( cid ) { <S2SV_StartBug> if ( ! memcmp ( data -> schemadata + data -> schemata [ cid ] , schema , len * sizeof ( Id ) ) ) <S2SV_EndBug> return cid ; for ( cid = 1 ; cid < data -> nschemata ; cid ++ ) <S2SV_StartBug> if ( ! memcmp ( data -> schemadata + data -> schemata [ cid ] , schema , len * sizeof ( Id ) ) ) <S2SV_EndBug> return cid ; } if ( ! create ) return 0 ; data -> schemadata = solv_extend ( data -> schemadata , data -> schemadatalen , len , sizeof ( Id ) , SCHEMATADATA_BLOCK ) ; data -> schemata = solv_extend ( data -> schemata , data -> nschemata , 1 , sizeof ( Id ) , SCHEMATA_BLOCK ) ; memcpy ( data -> schemadata + data -> schemadatalen , schema , len * sizeof ( Id ) ) ; data -> schemata [ data -> nschemata ] = data -> schemadatalen ; data -> schemadatalen += len ; schematahash [ h ] = data -> nschemata ; # if 0 fprintf ( stderr , \"schema2id:<S2SV_blank>new<S2SV_blank>schema\\\\n\" ) ; # endif return data -> nschemata ++ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ( data -> schemata [ cid ] + len <= data -> schemadatalen ) && <S2SV_ModStart> ) if ( ( data -> schemata [ cid ] + len <= data -> schemadatalen ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 char * ReadInput ( char * filename ) { FILE * finput ; long filesize , num ; char * buffer ; if ( ( finput = fopen ( filename , \"r\" ) ) == 0 ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>open<S2SV_blank>file<S2SV_blank>%s\\\\n\" , axohelp , filename ) ; <S2SV_StartBug> exit ( - 1 ) ; <S2SV_EndBug> } if ( ( fseek ( finput , 0 , SEEK_END ) != 0 ) || ( ( filesize = ftell ( finput ) ) < 0 ) || ( fseek ( finput , 0 , SEEK_SET ) != 0 ) ) { fprintf ( stderr , \"%s:<S2SV_blank>File<S2SV_blank>error<S2SV_blank>in<S2SV_blank>file<S2SV_blank>%s\\\\n\" , axohelp , filename ) ; <S2SV_StartBug> exit ( - 1 ) ; <S2SV_EndBug> } if ( ( buffer = malloc ( ( filesize + 1 ) * sizeof ( char ) ) ) == 0 ) { fprintf ( stderr , \"%s:<S2SV_blank>Error<S2SV_blank>allocating<S2SV_blank>%ld<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory\" , axohelp , filesize + 1 ) ; <S2SV_StartBug> exit ( - 1 ) ; <S2SV_EndBug> } num = fread ( buffer , 1 , filesize , finput ) ; if ( ferror ( finput ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Error<S2SV_blank>reading<S2SV_blank>file<S2SV_blank>%s\\\\n\" , axohelp , filename ) ; <S2SV_StartBug> exit ( - 1 ) ; <S2SV_EndBug> } buffer [ num ] = 0 ; fclose ( finput ) ; return ( buffer ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; exit ( <S2SV_ModEnd> 1 ) ; <S2SV_ModStart> ; exit ( <S2SV_ModEnd> 1 ) ; <S2SV_ModStart> ; exit ( <S2SV_ModEnd> 1 ) ; <S2SV_ModStart> ; exit ( <S2SV_ModEnd> 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3412\n\n```\nCWE-189 static int efx_ethtool_set_ringparam ( struct net_device * net_dev , struct ethtool_ringparam * ring ) { <S2SV_StartBug> struct efx_nic * efx = netdev_priv ( net_dev ) ; <S2SV_EndBug> if ( ring -> rx_mini_pending || ring -> rx_jumbo_pending || ring -> rx_pending > EFX_MAX_DMAQ_SIZE || ring -> tx_pending > EFX_MAX_DMAQ_SIZE ) return - EINVAL ; <S2SV_StartBug> if ( ring -> rx_pending < EFX_MIN_RING_SIZE || <S2SV_EndBug> ring -> tx_pending < EFX_MIN_RING_SIZE ) { netif_err ( efx , drv , efx -> net_dev , <S2SV_StartBug> \"TX<S2SV_blank>and<S2SV_blank>RX<S2SV_blank>queues<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>%ld\\\\n\" , <S2SV_EndBug> EFX_MIN_RING_SIZE ) ; return - EINVAL ; } <S2SV_StartBug> return efx_realloc_channels ( efx , ring -> rx_pending , ring -> tx_pending ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( net_dev ) ; u32 txq_entries <S2SV_ModStart> -> rx_pending < EFX_RXQ_MIN_ENT <S2SV_ModEnd> ) { netif_err <S2SV_ModStart> -> net_dev , \"RX<S2SV_blank>queues<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>%u\\\\n\" , EFX_RXQ_MIN_ENT <S2SV_ModEnd> ) ; return <S2SV_ModStart> EINVAL ; } txq_entries = max ( ring -> tx_pending , EFX_TXQ_MIN_ENT ( efx ) ) ; if ( txq_entries != ring -> tx_pending ) netif_warn ( efx , drv , efx -> net_dev , \"increasing<S2SV_blank>TX<S2SV_blank>queue<S2SV_blank>size<S2SV_blank>to<S2SV_blank>minimum<S2SV_blank>of<S2SV_blank>%u\\\\n\" , txq_entries ) ; <S2SV_ModStart> -> rx_pending , txq_entries <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9777\n\n```\nCWE-125 static void rtc_irq_eoi_tracking_reset ( struct kvm_ioapic * ioapic ) { ioapic -> rtc_status . pending_eoi = 0 ; <S2SV_StartBug> bitmap_zero ( ioapic -> rtc_status . dest_map . map , KVM_MAX_VCPUS ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . map , KVM_MAX_VCPU_ID <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16357\n\n```\nCWE-119 static Sdb * store_versioninfo_gnu_verneed ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { ut8 * end , * need = NULL ; const char * section_name = \"\" ; Elf_ ( Shdr ) * link_shdr = NULL ; const char * link_section_name = \"\" ; Sdb * sdb_vernaux = NULL ; Sdb * sdb_version = NULL ; Sdb * sdb = NULL ; int i , cnt ; if ( ! bin || ! bin -> dynstr ) { return NULL ; } if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return NULL ; } <S2SV_StartBug> if ( shdr -> sh_size < 1 ) { <S2SV_EndBug> return NULL ; } sdb = sdb_new0 ( ) ; if ( ! sdb ) { return NULL ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! ( need = ( ut8 * ) calloc ( R_MAX ( 1 , shdr -> sh_size ) , sizeof ( ut8 ) ) ) ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Elf_(Verneed)\\\\n\" ) ; goto beach ; } end = need + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"num_entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; if ( shdr -> sh_offset > bin -> size || shdr -> sh_offset + shdr -> sh_size > bin -> size ) { goto beach ; } if ( shdr -> sh_offset + shdr -> sh_size < shdr -> sh_size ) { goto beach ; } i = r_buf_read_at ( bin -> b , shdr -> sh_offset , need , shdr -> sh_size ) ; if ( i < 0 ) goto beach ; for ( i = 0 , cnt = 0 ; cnt < shdr -> sh_info ; ++ cnt ) { int j , isum ; ut8 * vstart = need + i ; Elf_ ( Verneed ) vvn = { 0 } ; if ( vstart + sizeof ( Elf_ ( Verneed ) ) > end ) { goto beach ; } Elf_ ( Verneed ) * entry = & vvn ; char key [ 32 ] = { 0 } ; sdb_version = sdb_new0 ( ) ; if ( ! sdb_version ) { goto beach ; } j = 0 ; vvn . vn_version = READ16 ( vstart , j ) vvn . vn_cnt = READ16 ( vstart , j ) vvn . vn_file = READ32 ( vstart , j ) vvn . vn_aux = READ32 ( vstart , j ) vvn . vn_next = READ32 ( vstart , j ) sdb_num_set ( sdb_version , \"vn_version\" , entry -> vn_version , 0 ) ; sdb_num_set ( sdb_version , \"idx\" , i , 0 ) ; if ( entry -> vn_file > bin -> dynstr_size ) { goto beach ; } { char * s = r_str_ndup ( & bin -> dynstr [ entry -> vn_file ] , 16 ) ; sdb_set ( sdb_version , \"file_name\" , s , 0 ) ; free ( s ) ; } sdb_num_set ( sdb_version , \"cnt\" , entry -> vn_cnt , 0 ) ; st32 vnaux = entry -> vn_aux ; if ( vnaux < 1 ) { goto beach ; } vstart += vnaux ; for ( j = 0 , isum = i + entry -> vn_aux ; j < entry -> vn_cnt && vstart + sizeof ( Elf_ ( Vernaux ) ) <= end ; ++ j ) { int k ; Elf_ ( Vernaux ) * aux = NULL ; Elf_ ( Vernaux ) vaux = { 0 } ; sdb_vernaux = sdb_new0 ( ) ; if ( ! sdb_vernaux ) { goto beach ; } aux = ( Elf_ ( Vernaux ) * ) & vaux ; k = 0 ; vaux . vna_hash = READ32 ( vstart , k ) vaux . vna_flags = READ16 ( vstart , k ) vaux . vna_other = READ16 ( vstart , k ) vaux . vna_name = READ32 ( vstart , k ) vaux . vna_next = READ32 ( vstart , k ) if ( aux -> vna_name > bin -> dynstr_size ) { goto beach ; } sdb_num_set ( sdb_vernaux , \"idx\" , isum , 0 ) ; if ( aux -> vna_name > 0 && aux -> vna_name + 8 < bin -> dynstr_size ) { char name [ 16 ] ; strncpy ( name , & bin -> dynstr [ aux -> vna_name ] , sizeof ( name ) - 1 ) ; name [ sizeof ( name ) - 1 ] = 0 ; sdb_set ( sdb_vernaux , \"name\" , name , 0 ) ; } sdb_set ( sdb_vernaux , \"flags\" , get_ver_flags ( aux -> vna_flags ) , 0 ) ; sdb_num_set ( sdb_vernaux , \"version\" , aux -> vna_other , 0 ) ; isum += aux -> vna_next ; vstart += aux -> vna_next ; snprintf ( key , sizeof ( key ) , \"vernaux%d\" , j ) ; sdb_ns_set ( sdb_version , key , sdb_vernaux ) ; } if ( ( int ) entry -> vn_next < 0 ) { bprintf ( \"Invalid<S2SV_blank>vn_next\\\\n\" ) ; break ; } i += entry -> vn_next ; snprintf ( key , sizeof ( key ) , \"version%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_version ) ; if ( ! entry -> vn_next ) { break ; } } free ( need ) ; return sdb ; beach : free ( need ) ; sdb_free ( sdb_vernaux ) ; sdb_free ( sdb_version ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sh_size < 1 || shdr -> sh_size > SIZE_MAX\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2347\n\n```\nCWE-190 static int decode_level3_header ( LHAFileHeader * * header , LHAInputStream * stream ) { unsigned int header_len ; if ( lha_decode_uint16 ( & RAW_DATA ( header , 0 ) ) != 4 ) { return 0 ; } if ( ! extend_raw_data ( header , stream , LEVEL_3_HEADER_LEN - RAW_DATA_LEN ( header ) ) ) { return 0 ; } header_len = lha_decode_uint32 ( & RAW_DATA ( header , 24 ) ) ; <S2SV_StartBug> if ( header_len > LEVEL_3_MAX_HEADER_LEN ) { <S2SV_EndBug> return 0 ; } if ( ! extend_raw_data ( header , stream , header_len - RAW_DATA_LEN ( header ) ) ) { return 0 ; } memcpy ( ( * header ) -> compress_method , & RAW_DATA ( header , 2 ) , 5 ) ; ( * header ) -> compress_method [ 5 ] = '\\\\0' ; ( * header ) -> compressed_length = lha_decode_uint32 ( & RAW_DATA ( header , 7 ) ) ; ( * header ) -> length = lha_decode_uint32 ( & RAW_DATA ( header , 11 ) ) ; ( * header ) -> timestamp = lha_decode_uint32 ( & RAW_DATA ( header , 15 ) ) ; ( * header ) -> crc = lha_decode_uint16 ( & RAW_DATA ( header , 21 ) ) ; ( * header ) -> os_type = RAW_DATA ( header , 23 ) ; if ( ! decode_extended_headers ( header , 28 ) ) { return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> header_len > LEVEL_3_MAX_HEADER_LEN || header_len < RAW_DATA_LEN ( header )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7526\n\n```\nCWE-787 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; one = 1 ; image = AcquireImage ( image_info ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> x_resolution = BitmapHeader1 . HorzRes / 470.0 ; image -> y_resolution = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> x_resolution = BitmapHeader2 . HorzRes / 470.0 ; image -> y_resolution = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; UnpackRaster : if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelPacket * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; <S2SV_StartBug> image -> columns = image -> rows = 0 ; <S2SV_EndBug> image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; image -> rows = Bitmap2Header1 . Height ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { size_t one ; one = 1 ; image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelPacket * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( BImgBuff , i , image , bpp ) ; } if ( BImgBuff ) <S2SV_StartBug> BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; ; <S2SV_EndBug> break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rows = 1 <S2SV_ModEnd> ; image -> <S2SV_ModStart> ( BImgBuff ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18200\n\n```\nCWE-20 <S2SV_StartBug> void f2fs_wait_discard_bios ( struct f2fs_sb_info * sbi ) <S2SV_EndBug> { __issue_discard_cmd ( sbi , false ) ; __drop_discard_cmd ( sbi ) ; <S2SV_StartBug> __wait_discard_cmd ( sbi , false ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> f2fs_sb_info * sbi , bool umount <S2SV_ModStart> ( sbi , ! umount <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10088\n\n```\nCWE-416 static ssize_t bsg_write ( struct file * file , const char __user * buf , size_t count , loff_t * ppos ) { struct bsg_device * bd = file -> private_data ; ssize_t bytes_written ; int ret ; <S2SV_StartBug> dprintk ( \"%s:<S2SV_blank>write<S2SV_blank>%Zd<S2SV_blank>bytes\\\\n\" , bd -> name , count ) ; <S2SV_EndBug> bsg_set_block ( bd , file ) ; bytes_written = 0 ; ret = __bsg_write ( bd , buf , count , & bytes_written , file -> f_mode & FMODE_WRITE ) ; * ppos = bytes_written ; if ( ! bytes_written || err_block_err ( ret ) ) bytes_written = ret ; dprintk ( \"%s:<S2SV_blank>returning<S2SV_blank>%Zd\\\\n\" , bd -> name , bytes_written ) ; return bytes_written ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , count ) ; if ( unlikely ( segment_eq ( get_fs ( ) , KERNEL_DS ) ) ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3288\n\n```\nCWE-20 static int do_anonymous_page ( struct mm_struct * mm , struct vm_area_struct * vma , unsigned long address , pte_t * page_table , pmd_t * pmd , unsigned int flags ) { struct mem_cgroup * memcg ; struct page * page ; spinlock_t * ptl ; pte_t entry ; pte_unmap ( page_table ) ; <S2SV_StartBug> if ( check_stack_guard_page ( vma , address ) < 0 ) <S2SV_EndBug> return VM_FAULT_SIGSEGV ; if ( ! ( flags & FAULT_FLAG_WRITE ) && ! mm_forbids_zeropage ( mm ) ) { entry = pte_mkspecial ( pfn_pte ( my_zero_pfn ( address ) , vma -> vm_page_prot ) ) ; page_table = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; if ( ! pte_none ( * page_table ) ) goto unlock ; goto setpte ; } if ( unlikely ( anon_vma_prepare ( vma ) ) ) goto oom ; page = alloc_zeroed_user_highpage_movable ( vma , address ) ; if ( ! page ) goto oom ; if ( mem_cgroup_try_charge ( page , mm , GFP_KERNEL , & memcg ) ) goto oom_free_page ; __SetPageUptodate ( page ) ; entry = mk_pte ( page , vma -> vm_page_prot ) ; if ( vma -> vm_flags & VM_WRITE ) entry = pte_mkwrite ( pte_mkdirty ( entry ) ) ; page_table = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; if ( ! pte_none ( * page_table ) ) goto release ; inc_mm_counter_fast ( mm , MM_ANONPAGES ) ; page_add_new_anon_rmap ( page , vma , address ) ; mem_cgroup_commit_charge ( page , memcg , false ) ; lru_cache_add_active_or_unevictable ( page , vma ) ; setpte : set_pte_at ( mm , address , page_table , entry ) ; update_mmu_cache ( vma , address , page_table ) ; unlock : pte_unmap_unlock ( page_table , ptl ) ; return 0 ; release : mem_cgroup_cancel_charge ( page , memcg ) ; page_cache_release ( page ) ; goto unlock ; oom_free_page : page_cache_release ( page ) ; oom : return VM_FAULT_OOM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( vma -> vm_flags & VM_SHARED ) return VM_FAULT_SIGBUS ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7916\n\n```\nCWE-362 static ssize_t environ_read ( struct file * file , char __user * buf , size_t count , loff_t * ppos ) { char * page ; unsigned long src = * ppos ; int ret = 0 ; struct mm_struct * mm = file -> private_data ; unsigned long env_start , env_end ; <S2SV_StartBug> if ( ! mm ) <S2SV_EndBug> return 0 ; page = ( char * ) __get_free_page ( GFP_TEMPORARY ) ; if ( ! page ) return - ENOMEM ; ret = 0 ; if ( ! atomic_inc_not_zero ( & mm -> mm_users ) ) goto free ; down_read ( & mm -> mmap_sem ) ; env_start = mm -> env_start ; env_end = mm -> env_end ; up_read ( & mm -> mmap_sem ) ; while ( count > 0 ) { size_t this_len , max_len ; int retval ; if ( src >= ( env_end - env_start ) ) break ; this_len = env_end - ( env_start + src ) ; max_len = min_t ( size_t , PAGE_SIZE , count ) ; this_len = min ( max_len , this_len ) ; retval = access_remote_vm ( mm , ( env_start + src ) , page , this_len , 0 ) ; if ( retval <= 0 ) { ret = retval ; break ; } if ( copy_to_user ( buf , page , retval ) ) { ret = - EFAULT ; break ; } ret += retval ; src += retval ; buf += retval ; count -= retval ; } * ppos = src ; mmput ( mm ) ; free : free_page ( ( unsigned long ) page ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! mm || ! mm -> env_end\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 <S2SV_StartBug> static void buffer_pipe_buf_get ( struct pipe_inode_info * pipe , <S2SV_EndBug> struct pipe_buffer * buf ) { struct buffer_ref * ref = ( struct buffer_ref * ) buf -> private ; <S2SV_StartBug> ref -> ref ++ ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static bool <S2SV_ModEnd> buffer_pipe_buf_get ( struct <S2SV_ModStart> -> private ; if ( ref -> ref > INT_MAX / 2 ) return false ; <S2SV_ModStart> ref ++ ; return true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4387\n\n```\nCWE-119 int ip6_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int transhdrlen , int hlimit , int tclass , struct ipv6_txoptions * opt , struct flowi6 * fl6 , struct rt6_info * rt , unsigned int flags , int dontfrag ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_cork * cork ; struct sk_buff * skb , * skb_prev = NULL ; unsigned int maxfraglen , fragheaderlen , mtu ; int exthdrlen ; int dst_exthdrlen ; int hh_len ; int copy ; int err ; int offset = 0 ; __u8 tx_flags = 0 ; if ( flags & MSG_PROBE ) return 0 ; cork = & inet -> cork . base ; if ( skb_queue_empty ( & sk -> sk_write_queue ) ) { if ( opt ) { if ( WARN_ON ( np -> cork . opt ) ) return - EINVAL ; np -> cork . opt = kzalloc ( opt -> tot_len , sk -> sk_allocation ) ; if ( unlikely ( np -> cork . opt == NULL ) ) return - ENOBUFS ; np -> cork . opt -> tot_len = opt -> tot_len ; np -> cork . opt -> opt_flen = opt -> opt_flen ; np -> cork . opt -> opt_nflen = opt -> opt_nflen ; np -> cork . opt -> dst0opt = ip6_opt_dup ( opt -> dst0opt , sk -> sk_allocation ) ; if ( opt -> dst0opt && ! np -> cork . opt -> dst0opt ) return - ENOBUFS ; np -> cork . opt -> dst1opt = ip6_opt_dup ( opt -> dst1opt , sk -> sk_allocation ) ; if ( opt -> dst1opt && ! np -> cork . opt -> dst1opt ) return - ENOBUFS ; np -> cork . opt -> hopopt = ip6_opt_dup ( opt -> hopopt , sk -> sk_allocation ) ; if ( opt -> hopopt && ! np -> cork . opt -> hopopt ) return - ENOBUFS ; np -> cork . opt -> srcrt = ip6_rthdr_dup ( opt -> srcrt , sk -> sk_allocation ) ; if ( opt -> srcrt && ! np -> cork . opt -> srcrt ) return - ENOBUFS ; } dst_hold ( & rt -> dst ) ; cork -> dst = & rt -> dst ; inet -> cork . fl . u . ip6 = * fl6 ; np -> cork . hop_limit = hlimit ; np -> cork . tclass = tclass ; if ( rt -> dst . flags & DST_XFRM_TUNNEL ) mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( & rt -> dst ) ; else mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( rt -> dst . path ) ; if ( np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } cork -> fragsize = mtu ; if ( dst_allfrag ( rt -> dst . path ) ) cork -> flags |= IPCORK_ALLFRAG ; cork -> length = 0 ; exthdrlen = ( opt ? opt -> opt_flen : 0 ) ; length += exthdrlen ; transhdrlen += exthdrlen ; dst_exthdrlen = rt -> dst . header_len - rt -> rt6i_nfheader_len ; } else { rt = ( struct rt6_info * ) cork -> dst ; fl6 = & inet -> cork . fl . u . ip6 ; opt = np -> cork . opt ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; mtu = cork -> fragsize ; } hh_len = LL_RESERVED_SPACE ( rt -> dst . dev ) ; fragheaderlen = sizeof ( struct ipv6hdr ) + rt -> rt6i_nfheader_len + ( opt ? opt -> opt_nflen : 0 ) ; maxfraglen = ( ( mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; if ( mtu <= sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN ) { if ( cork -> length + length > sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN - fragheaderlen ) { ipv6_local_error ( sk , EMSGSIZE , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } } if ( sk -> sk_type == SOCK_DGRAM ) sock_tx_timestamp ( sk , & tx_flags ) ; <S2SV_StartBug> cork -> length += length ; <S2SV_EndBug> <S2SV_StartBug> if ( length > mtu ) { <S2SV_EndBug> int proto = sk -> sk_protocol ; <S2SV_StartBug> if ( dontfrag && ( proto == IPPROTO_UDP || proto == IPPROTO_RAW ) ) { <S2SV_EndBug> ipv6_local_rxpmtu ( sk , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } <S2SV_StartBug> if ( proto == IPPROTO_UDP && <S2SV_EndBug> ( rt -> dst . dev -> features & NETIF_F_UFO ) ) { err = ip6_ufo_append_data ( sk , getfrag , from , length , hh_len , fragheaderlen , transhdrlen , mtu , flags , rt ) ; if ( err ) goto error ; return 0 ; } <S2SV_StartBug> } <S2SV_EndBug> if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) goto alloc_new_skb ; while ( length > 0 ) { copy = ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - skb -> len ; if ( copy < length ) copy = maxfraglen - skb -> len ; if ( copy <= 0 ) { char * data ; unsigned int datalen ; unsigned int fraglen ; unsigned int fraggap ; unsigned int alloclen ; alloc_new_skb : if ( skb ) fraggap = skb -> len - maxfraglen ; else fraggap = 0 ; if ( skb == NULL || skb_prev == NULL ) ip6_append_data_mtu ( & mtu , & maxfraglen , fragheaderlen , skb , rt , np -> pmtudisc == IPV6_PMTUDISC_PROBE ) ; skb_prev = skb ; datalen = length + fraggap ; if ( datalen > ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - fragheaderlen ) datalen = maxfraglen - fragheaderlen - rt -> dst . trailer_len ; if ( ( flags & MSG_MORE ) && ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) alloclen = mtu ; else alloclen = datalen + fragheaderlen ; alloclen += dst_exthdrlen ; if ( datalen != length + fraggap ) { datalen += rt -> dst . trailer_len ; } alloclen += rt -> dst . trailer_len ; fraglen = datalen + fragheaderlen ; alloclen += sizeof ( struct frag_hdr ) ; if ( transhdrlen ) { skb = sock_alloc_send_skb ( sk , alloclen + hh_len , ( flags & MSG_DONTWAIT ) , & err ) ; } else { skb = NULL ; if ( atomic_read ( & sk -> sk_wmem_alloc ) <= 2 * sk -> sk_sndbuf ) skb = sock_wmalloc ( sk , alloclen + hh_len , 1 , sk -> sk_allocation ) ; if ( unlikely ( skb == NULL ) ) err = - ENOBUFS ; else { tx_flags = 0 ; } } if ( skb == NULL ) goto error ; skb -> protocol = htons ( ETH_P_IPV6 ) ; skb -> ip_summed = CHECKSUM_NONE ; skb -> csum = 0 ; skb_reserve ( skb , hh_len + sizeof ( struct frag_hdr ) + dst_exthdrlen ) ; if ( sk -> sk_type == SOCK_DGRAM ) skb_shinfo ( skb ) -> tx_flags = tx_flags ; data = skb_put ( skb , fraglen ) ; skb_set_network_header ( skb , exthdrlen ) ; data += fragheaderlen ; skb -> transport_header = ( skb -> network_header + fragheaderlen ) ; if ( fraggap ) { skb -> csum = skb_copy_and_csum_bits ( skb_prev , maxfraglen , data + transhdrlen , fraggap , 0 ) ; skb_prev -> csum = csum_sub ( skb_prev -> csum , skb -> csum ) ; data += fraggap ; pskb_trim_unique ( skb_prev , maxfraglen ) ; } copy = datalen - transhdrlen - fraggap ; if ( copy < 0 ) { err = - EINVAL ; kfree_skb ( skb ) ; goto error ; } else if ( copy > 0 && getfrag ( from , data + transhdrlen , offset , copy , fraggap , skb ) < 0 ) { err = - EFAULT ; kfree_skb ( skb ) ; goto error ; } offset += copy ; length -= datalen - fraggap ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; continue ; } if ( copy > length ) copy = length ; if ( ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) { unsigned int off ; off = skb -> len ; if ( getfrag ( from , skb_put ( skb , copy ) , offset , copy , off , skb ) < 0 ) { __skb_trim ( skb , off ) ; err = - EFAULT ; goto error ; } } else { int i = skb_shinfo ( skb ) -> nr_frags ; struct page_frag * pfrag = sk_page_frag ( sk ) ; err = - ENOMEM ; if ( ! sk_page_frag_refill ( sk , pfrag ) ) goto error ; if ( ! skb_can_coalesce ( skb , i , pfrag -> page , pfrag -> offset ) ) { err = - EMSGSIZE ; if ( i == MAX_SKB_FRAGS ) goto error ; __skb_fill_page_desc ( skb , i , pfrag -> page , pfrag -> offset , 0 ) ; skb_shinfo ( skb ) -> nr_frags = ++ i ; get_page ( pfrag -> page ) ; } copy = min_t ( int , copy , pfrag -> size - pfrag -> offset ) ; if ( getfrag ( from , page_address ( pfrag -> page ) + pfrag -> offset , offset , copy , skb -> len , skb ) < 0 ) goto error_efault ; pfrag -> offset += copy ; skb_frag_size_add ( & skb_shinfo ( skb ) -> frags [ i - 1 ] , copy ) ; skb -> len += copy ; skb -> data_len += copy ; skb -> truesize += copy ; atomic_add ( copy , & sk -> sk_wmem_alloc ) ; } offset += copy ; length -= copy ; } return 0 ; error_efault : err = - EFAULT ; error : cork -> length -= length ; IP6_INC_STATS ( sock_net ( sk ) , rt -> rt6i_idev , IPSTATS_MIB_OUTDISCARDS ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tx_flags ) ; if ( <S2SV_ModEnd> ( length > <S2SV_ModStart> > mtu ) && <S2SV_ModEnd> dontfrag && ( <S2SV_ModStart> dontfrag && ( sk -> sk_protocol <S2SV_ModEnd> == IPPROTO_UDP || <S2SV_ModStart> == IPPROTO_UDP || sk -> sk_protocol <S2SV_ModEnd> == IPPROTO_RAW ) <S2SV_ModStart> EMSGSIZE ; } skb = skb_peek_tail ( & sk -> sk_write_queue ) ; cork -> length += length ; if ( ( ( length > mtu ) || ( skb && skb_is_gso ( skb ) ) ) && ( sk -> sk_protocol == IPPROTO_UDP ) <S2SV_ModEnd> && ( rt <S2SV_ModStart> 0 ; } if ( ! skb <S2SV_ModEnd> ) goto alloc_new_skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11382\n\n```\nCWE-125 <S2SV_StartBug> INST_HANDLER ( sts ) { <S2SV_EndBug> int r = ( ( buf [ 0 ] >> 4 ) & 0xf ) | ( ( buf [ 1 ] & 0x1 ) << 4 ) ; int k = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; op -> ptr = k ; ESIL_A ( \"r%d,\" , r ) ; __generic_ld_st ( op , \"ram\" , 0 , 1 , 0 , k , 1 ) ; op -> cycles = 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sts ) { if ( len < 4 ) { return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7101\n\n```\nCWE-125 static Image * ReadSGIImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; SGIInfo iris_info ; size_t bytes_per_pixel , quantum ; ssize_t count , y , z ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } iris_info . magic = ReadBlobMSBShort ( image ) ; do { if ( iris_info . magic != 0x01DA ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . storage = ( unsigned char ) ReadBlobByte ( image ) ; switch ( iris_info . storage ) { case 0x00 : image -> compression = NoCompression ; break ; case 0x01 : image -> compression = RLECompression ; break ; default : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } iris_info . bytes_per_pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( iris_info . bytes_per_pixel == 0 ) || ( iris_info . bytes_per_pixel > 2 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . dimension = ReadBlobMSBShort ( image ) ; iris_info . columns = ReadBlobMSBShort ( image ) ; iris_info . rows = ReadBlobMSBShort ( image ) ; iris_info . depth = ReadBlobMSBShort ( image ) ; if ( ( iris_info . depth == 0 ) || ( iris_info . depth > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . minimum_value = ReadBlobMSBLong ( image ) ; iris_info . maximum_value = ReadBlobMSBLong ( image ) ; iris_info . sans = ReadBlobMSBLong ( image ) ; ( void ) ReadBlob ( image , sizeof ( iris_info . name ) , ( unsigned char * ) iris_info . name ) ; iris_info . name [ sizeof ( iris_info . name ) - 1 ] = '\\\\0' ; if ( * iris_info . name != '\\\\0' ) ( void ) SetImageProperty ( image , \"label\" , iris_info . name , exception ) ; iris_info . pixel_format = ReadBlobMSBLong ( image ) ; if ( iris_info . pixel_format != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , sizeof ( iris_info . filler ) , iris_info . filler ) ; ( void ) count ; image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; image -> depth = ( size_t ) MagickMin ( iris_info . depth , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . pixel_format == 0 ) image -> depth = ( size_t ) MagickMin ( ( size_t ) 8 * iris_info . bytes_per_pixel , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . depth < 3 ) { image -> storage_class = PseudoClass ; image -> colors = iris_info . bytes_per_pixel > 1 ? 65535 : 256 ; } <S2SV_StartBug> if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) <S2SV_EndBug> if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; bytes_per_pixel = ( size_t ) iris_info . bytes_per_pixel ; number_pixels = ( MagickSizeType ) iris_info . columns * iris_info . rows ; if ( ( 4 * bytes_per_pixel * number_pixels ) != ( ( MagickSizeType ) ( size_t ) ( 4 * bytes_per_pixel * number_pixels ) ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info = AcquireVirtualMemory ( iris_info . columns , iris_info . rows * 4 * bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( int ) iris_info . storage != 0x01 ) { unsigned char * scanline ; scanline = ( unsigned char * ) AcquireQuantumMemory ( iris_info . columns , bytes_per_pixel * sizeof ( * scanline ) ) ; if ( scanline == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels + bytes_per_pixel * z ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { count = ReadBlob ( image , bytes_per_pixel * iris_info . columns , scanline ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; if ( bytes_per_pixel == 2 ) for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ 2 * x ] ; * ( p + 1 ) = scanline [ 2 * x + 1 ] ; p += 8 ; } else for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ x ] ; p += 4 ; } } } scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; } else { MemoryInfo * packet_info ; size_t * runlength ; ssize_t offset , * offsets ; unsigned char * packets ; unsigned int data_order ; offsets = ( ssize_t * ) AcquireQuantumMemory ( ( size_t ) iris_info . rows , iris_info . depth * sizeof ( * offsets ) ) ; runlength = ( size_t * ) AcquireQuantumMemory ( iris_info . rows , iris_info . depth * sizeof ( * runlength ) ) ; packet_info = AcquireVirtualMemory ( ( size_t ) iris_info . columns + 10UL , 4UL * sizeof ( * packets ) ) ; if ( ( offsets == ( ssize_t * ) NULL ) || ( runlength == ( size_t * ) NULL ) || ( packet_info == ( MemoryInfo * ) NULL ) ) { if ( offsets == ( ssize_t * ) NULL ) offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; if ( runlength == ( size_t * ) NULL ) runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; if ( packet_info == ( MemoryInfo * ) NULL ) packet_info = RelinquishVirtualMemory ( packet_info ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } packets = ( unsigned char * ) GetVirtualMemoryBlob ( packet_info ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) offsets [ i ] = ReadBlobMSBSignedLong ( image ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) { runlength [ i ] = ReadBlobMSBLong ( image ) ; if ( runlength [ i ] > ( 4 * ( size_t ) iris_info . columns + 10 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } offset = 0 ; data_order = 0 ; for ( y = 0 ; ( ( y < ( ssize_t ) iris_info . rows ) && ( data_order == 0 ) ) ; y ++ ) for ( z = 0 ; ( ( z < ( ssize_t ) iris_info . depth ) && ( data_order == 0 ) ) ; z ++ ) { if ( offsets [ y + z * iris_info . rows ] < offset ) data_order = 1 ; offset = offsets [ y + z * iris_info . rows ] ; } offset = ( ssize_t ) TellBlob ( image ) ; if ( data_order == 1 ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( ssize_t ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , 1L * iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } } } else { MagickOffsetType position ; position = TellBlob ( image ) ; p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( ssize_t ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , 1L * iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } offset = ( ssize_t ) SeekBlob ( image , position , SEEK_SET ) ; } packet_info = RelinquishVirtualMemory ( packet_info ) ; runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; } image -> alpha_trait = iris_info . depth == 4 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; if ( image -> storage_class == DirectClass ) { if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 0 ) << 8 ) | ( * ( p + 1 ) ) ) ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 2 ) << 8 ) | ( * ( p + 3 ) ) ) ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 4 ) << 8 ) | ( * ( p + 5 ) ) ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 6 ) << 8 ) | ( * ( p + 7 ) ) ) ) , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + 1 ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * ( p + 3 ) ) , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { quantum = ( * p << 8 ) ; quantum |= ( * ( p + 1 ) ) ; SetPixelIndex ( image , ( Quantum ) quantum , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; iris_info . magic = ReadBlobMSBShort ( image ) ; if ( iris_info . magic == 0x01DA ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( iris_info . magic == 0x01DA ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3610\n\n```\nCWE-000 int kvm_set_msr ( struct kvm_vcpu * vcpu , struct msr_data * msr ) { <S2SV_StartBug> return kvm_x86_ops -> set_msr ( vcpu , msr ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> msr ) { switch ( msr -> index ) { case MSR_FS_BASE : case MSR_GS_BASE : case MSR_KERNEL_GS_BASE : case MSR_CSTAR : case MSR_LSTAR : if ( is_noncanonical_address ( msr -> data ) ) return 1 ; break ; case MSR_IA32_SYSENTER_EIP : case MSR_IA32_SYSENTER_ESP : msr -> data = get_canonical ( msr -> data ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3757\n\n```\nCWE-20 static void print_maps ( struct pid_info_t * info ) { FILE * maps ; size_t offset ; char device [ 10 ] ; long int inode ; <S2SV_StartBug> char file [ PATH_MAX ] ; <S2SV_EndBug> strlcat ( info -> path , \"maps\" , sizeof ( info -> path ) ) ; maps = fopen ( info -> path , \"r\" ) ; if ( ! maps ) goto out ; <S2SV_StartBug> while ( fscanf ( maps , \"%*x-%*x<S2SV_blank>%*s<S2SV_blank>%zx<S2SV_blank>%s<S2SV_blank>%ld<S2SV_blank>%s\\\\n\" , & offset , device , & inode , <S2SV_EndBug> file ) == 4 ) { if ( inode == 0 || ! strcmp ( device , \"00:00\" ) ) continue ; printf ( \"%-9s<S2SV_blank>%5d<S2SV_blank>%10s<S2SV_blank>%4s<S2SV_blank>%9s<S2SV_blank>%18s<S2SV_blank>%9zd<S2SV_blank>%10ld<S2SV_blank>%s\\\\n\" , info -> cmdline , info -> pid , info -> user , \"mem\" , \"???\" , device , offset , inode , file ) ; } fclose ( maps ) ; out : info -> path [ info -> parent_length ] = '\\\\0' ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char file [ 1024 <S2SV_ModEnd> ] ; strlcat <S2SV_ModStart> ( maps , \"%*x-%*x<S2SV_blank>%*s<S2SV_blank>%zx<S2SV_blank>%5s<S2SV_blank>%ld<S2SV_blank>%1023s\\\\n\" <S2SV_ModEnd> , & offset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0540\n\n```\nCWE-119 WORD32 ihevcd_parse_transform_tree ( codec_t * ps_codec , WORD32 x0 , WORD32 y0 , WORD32 cu_x_base , WORD32 cu_y_base , WORD32 log2_trafo_size , WORD32 trafo_depth , WORD32 blk_idx , WORD32 intra_pred_mode ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; sps_t * ps_sps ; pps_t * ps_pps ; WORD32 value ; WORD32 x1 , y1 ; WORD32 max_trafo_depth ; bitstrm_t * ps_bitstrm = & ps_codec -> s_parse . s_bitstrm ; WORD32 intra_split_flag ; WORD32 split_transform_flag ; WORD32 ctxt_idx ; cab_ctxt_t * ps_cabac = & ps_codec -> s_parse . s_cabac ; max_trafo_depth = ps_codec -> s_parse . s_cu . i4_max_trafo_depth ; ps_sps = ps_codec -> s_parse . ps_sps ; ps_pps = ps_codec -> s_parse . ps_pps ; intra_split_flag = ps_codec -> s_parse . s_cu . i4_intra_split_flag ; { split_transform_flag = 0 ; if ( ( log2_trafo_size <= ps_sps -> i1_log2_max_transform_block_size ) && ( log2_trafo_size > ps_sps -> i1_log2_min_transform_block_size ) && ( trafo_depth < max_trafo_depth ) && ! ( intra_split_flag && ( trafo_depth == 0 ) ) ) { ctxt_idx = IHEVC_CAB_SPLIT_TFM + ( 5 - log2_trafo_size ) ; TRACE_CABAC_CTXT ( \"split_transform_flag\" , ps_cabac -> u4_range , ctxt_idx ) ; split_transform_flag = ihevcd_cabac_decode_bin ( ps_cabac , ps_bitstrm , ctxt_idx ) ; AEV_TRACE ( \"split_transform_flag\" , split_transform_flag , ps_cabac -> u4_range ) ; } else { WORD32 inter_split_flag = 0 ; if ( ( 0 == ps_sps -> i1_max_transform_hierarchy_depth_inter ) && ( PRED_MODE_INTER == ps_codec -> s_parse . s_cu . i4_pred_mode ) && ( PART_2Nx2N != ps_codec -> s_parse . s_cu . i4_part_mode ) && ( 0 == trafo_depth ) ) { inter_split_flag = 1 ; } if ( ( log2_trafo_size > ps_sps -> i1_log2_max_transform_block_size ) || ( ( 1 == intra_split_flag ) && ( 0 == trafo_depth ) ) || ( 1 == inter_split_flag ) ) { split_transform_flag = 1 ; } } if ( 0 == trafo_depth ) { ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth ] = 0 ; ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth ] = 0 ; } else { ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth ] = ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth - 1 ] ; ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth ] = ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth - 1 ] ; } if ( trafo_depth == 0 || log2_trafo_size > 2 ) { ctxt_idx = IHEVC_CAB_CBCR_IDX + trafo_depth ; if ( ( trafo_depth == 0 ) || ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth - 1 ] ) { TRACE_CABAC_CTXT ( \"cbf_cb\" , ps_cabac -> u4_range , ctxt_idx ) ; value = ihevcd_cabac_decode_bin ( ps_cabac , ps_bitstrm , ctxt_idx ) ; AEV_TRACE ( \"cbf_cb\" , value , ps_cabac -> u4_range ) ; ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth ] = value ; } if ( ( trafo_depth == 0 ) || ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth - 1 ] ) { TRACE_CABAC_CTXT ( \"cbf_cr\" , ps_cabac -> u4_range , ctxt_idx ) ; value = ihevcd_cabac_decode_bin ( ps_cabac , ps_bitstrm , ctxt_idx ) ; AEV_TRACE ( \"cbf_cr\" , value , ps_cabac -> u4_range ) ; ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth ] = value ; } } if ( split_transform_flag ) { WORD32 intra_pred_mode_tmp ; x1 = x0 + ( ( 1 << log2_trafo_size ) >> 1 ) ; y1 = y0 + ( ( 1 << log2_trafo_size ) >> 1 ) ; intra_pred_mode_tmp = trafo_depth ? intra_pred_mode : ps_codec -> s_parse . s_cu . ai4_intra_luma_pred_mode [ 0 ] ; ihevcd_parse_transform_tree ( ps_codec , x0 , y0 , x0 , y0 , log2_trafo_size - 1 , trafo_depth + 1 , 0 , intra_pred_mode_tmp ) ; intra_pred_mode_tmp = trafo_depth ? intra_pred_mode : ps_codec -> s_parse . s_cu . ai4_intra_luma_pred_mode [ 1 ] ; ihevcd_parse_transform_tree ( ps_codec , x1 , y0 , x0 , y0 , log2_trafo_size - 1 , trafo_depth + 1 , 1 , intra_pred_mode_tmp ) ; intra_pred_mode_tmp = trafo_depth ? intra_pred_mode : ps_codec -> s_parse . s_cu . ai4_intra_luma_pred_mode [ 2 ] ; ihevcd_parse_transform_tree ( ps_codec , x0 , y1 , x0 , y0 , log2_trafo_size - 1 , trafo_depth + 1 , 2 , intra_pred_mode_tmp ) ; intra_pred_mode_tmp = trafo_depth ? intra_pred_mode : ps_codec -> s_parse . s_cu . ai4_intra_luma_pred_mode [ 3 ] ; ihevcd_parse_transform_tree ( ps_codec , x1 , y1 , x0 , y0 , log2_trafo_size - 1 , trafo_depth + 1 , 3 , intra_pred_mode_tmp ) ; } else { WORD32 ctb_x_base ; WORD32 ctb_y_base ; WORD32 cu_qp_delta_abs ; tu_t * ps_tu = ps_codec -> s_parse . ps_tu ; cu_qp_delta_abs = 0 ; ctb_x_base = ps_codec -> s_parse . i4_ctb_x << ps_sps -> i1_log2_ctb_size ; ctb_y_base = ps_codec -> s_parse . i4_ctb_y << ps_sps -> i1_log2_ctb_size ; if ( ( ps_codec -> s_parse . s_cu . i4_pred_mode == PRED_MODE_INTRA ) || ( trafo_depth != 0 ) || ( ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth ] ) || ( ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth ] ) ) { ctxt_idx = IHEVC_CAB_CBF_LUMA_IDX ; ctxt_idx += ( trafo_depth == 0 ) ? 1 : 0 ; TRACE_CABAC_CTXT ( \"cbf_luma\" , ps_cabac -> u4_range , ctxt_idx ) ; value = ihevcd_cabac_decode_bin ( ps_cabac , ps_bitstrm , ctxt_idx ) ; AEV_TRACE ( \"cbf_luma\" , value , ps_cabac -> u4_range ) ; ps_codec -> s_parse . s_cu . i1_cbf_luma = value ; } else { ps_codec -> s_parse . s_cu . i1_cbf_luma = 1 ; } ps_tu -> b1_cb_cbf = 0 ; ps_tu -> b1_cr_cbf = 0 ; ps_tu -> b1_y_cbf = 0 ; ps_tu -> b4_pos_x = ( ( x0 - ctb_x_base ) >> 2 ) ; ps_tu -> b4_pos_y = ( ( y0 - ctb_y_base ) >> 2 ) ; ps_tu -> b1_transquant_bypass = ps_codec -> s_parse . s_cu . i4_cu_transquant_bypass ; ps_tu -> b3_size = ( log2_trafo_size - 2 ) ; ps_tu -> b7_qp = ps_codec -> s_parse . u4_qp ; ps_tu -> b6_luma_intra_mode = intra_pred_mode ; ps_tu -> b3_chroma_intra_mode_idx = ps_codec -> s_parse . s_cu . i4_intra_chroma_pred_mode_idx ; if ( ps_codec -> s_parse . s_cu . i1_cbf_luma || ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth ] || ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth ] ) { WORD32 intra_pred_mode_chroma ; if ( ps_pps -> i1_cu_qp_delta_enabled_flag && ! ps_codec -> s_parse . i4_is_cu_qp_delta_coded ) { WORD32 c_max = TU_MAX_QP_DELTA_ABS ; WORD32 ctxt_inc = IHEVC_CAB_QP_DELTA_ABS ; WORD32 ctxt_inc_max = CTXT_MAX_QP_DELTA_ABS ; TRACE_CABAC_CTXT ( \"cu_qp_delta_abs\" , ps_cabac -> u4_range , ctxt_inc ) ; cu_qp_delta_abs = ihevcd_cabac_decode_bins_tunary ( ps_cabac , ps_bitstrm , c_max , ctxt_inc , 0 , ctxt_inc_max ) ; if ( cu_qp_delta_abs >= c_max ) { value = ihevcd_cabac_decode_bypass_bins_egk ( ps_cabac , ps_bitstrm , 0 ) ; cu_qp_delta_abs += value ; } AEV_TRACE ( \"cu_qp_delta_abs\" , cu_qp_delta_abs , ps_cabac -> u4_range ) ; ps_codec -> s_parse . i4_is_cu_qp_delta_coded = 1 ; if ( cu_qp_delta_abs ) { value = ihevcd_cabac_decode_bypass_bin ( ps_cabac , ps_bitstrm ) ; AEV_TRACE ( \"cu_qp_delta_sign\" , value , ps_cabac -> u4_range ) ; if ( value ) cu_qp_delta_abs = - cu_qp_delta_abs ; } <S2SV_StartBug> ps_codec -> s_parse . s_cu . i4_cu_qp_delta = cu_qp_delta_abs ; <S2SV_EndBug> } if ( ps_codec -> s_parse . s_cu . i1_cbf_luma ) { ps_tu -> b1_y_cbf = 1 ; ihevcd_parse_residual_coding ( ps_codec , x0 , y0 , log2_trafo_size , 0 , intra_pred_mode ) ; } if ( 4 == ps_codec -> s_parse . s_cu . i4_intra_chroma_pred_mode_idx ) intra_pred_mode_chroma = ps_codec -> s_parse . s_cu . ai4_intra_luma_pred_mode [ 0 ] ; else { intra_pred_mode_chroma = gau1_intra_pred_chroma_modes [ ps_codec -> s_parse . s_cu . i4_intra_chroma_pred_mode_idx ] ; if ( intra_pred_mode_chroma == ps_codec -> s_parse . s_cu . ai4_intra_luma_pred_mode [ 0 ] ) { intra_pred_mode_chroma = INTRA_ANGULAR ( 34 ) ; } } if ( log2_trafo_size > 2 ) { if ( ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth ] ) { ps_tu -> b1_cb_cbf = 1 ; ihevcd_parse_residual_coding ( ps_codec , x0 , y0 , log2_trafo_size - 1 , 1 , intra_pred_mode_chroma ) ; } if ( ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth ] ) { ps_tu -> b1_cr_cbf = 1 ; ihevcd_parse_residual_coding ( ps_codec , x0 , y0 , log2_trafo_size - 1 , 2 , intra_pred_mode_chroma ) ; } } else if ( blk_idx == 3 ) { if ( ps_codec -> s_parse . s_cu . ai1_cbf_cb [ trafo_depth ] ) { ps_tu -> b1_cb_cbf = 1 ; ihevcd_parse_residual_coding ( ps_codec , cu_x_base , cu_y_base , log2_trafo_size , 1 , intra_pred_mode_chroma ) ; } if ( ps_codec -> s_parse . s_cu . ai1_cbf_cr [ trafo_depth ] ) { ps_tu -> b1_cr_cbf = 1 ; ihevcd_parse_residual_coding ( ps_codec , cu_x_base , cu_y_base , log2_trafo_size , 2 , intra_pred_mode_chroma ) ; } } else { ps_tu -> b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE ; } } else { if ( ( 3 != blk_idx ) && ( 2 == log2_trafo_size ) ) { ps_tu -> b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE ; } } { if ( ( ps_codec -> s_parse . s_cu . i4_pos_x << 3 ) == ( ps_tu -> b4_pos_x << 2 ) && ( ps_codec -> s_parse . s_cu . i4_pos_y << 3 ) == ( ps_tu -> b4_pos_y << 2 ) ) { ps_tu -> b1_first_tu_in_cu = 1 ; } else { ps_tu -> b1_first_tu_in_cu = 0 ; } } ps_codec -> s_parse . ps_tu ++ ; ps_codec -> s_parse . s_cu . i4_tu_cnt ++ ; ps_codec -> s_parse . i4_pic_tu_idx ++ ; } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cu_qp_delta_abs ; } if ( cu_qp_delta_abs < MIN_CU_QP_DELTA_ABS ( ps_sps -> i1_bit_depth_luma_minus8 ) || cu_qp_delta_abs > MAX_CU_QP_DELTA_ABS ( ps_sps -> i1_bit_depth_luma_minus8 ) ) { return IHEVCD_INVALID_PARAMETER ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-20740\n\n```\nCWE-787 int pdf_is_pdf ( FILE * fp ) { <S2SV_StartBug> int is_pdf ; <S2SV_EndBug> char * header ; <S2SV_StartBug> header = get_header ( fp ) ; <S2SV_EndBug> <S2SV_StartBug> if ( header && strstr ( header , \"%PDF-\" ) ) <S2SV_EndBug> is_pdf = 1 ; else is_pdf = 0 ; free ( header ) ; return is_pdf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fp ) { <S2SV_ModEnd> char * header <S2SV_ModStart> * header ; if ( ! ( <S2SV_ModStart> ( fp ) ) ) return 0 ; const char * c = <S2SV_ModEnd> strstr ( header <S2SV_ModStart> , \"%PDF-\" ) ; const int is_pdf = c && ( ( c - header + strlen ( \"%PDF-M.m\" ) ) < 1024 ) <S2SV_ModEnd> ; free (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 STATIC int xfs_attr_calc_size ( struct xfs_inode * ip , int namelen , int valuelen , int * local ) { struct xfs_mount * mp = ip -> i_mount ; int size ; int nblks ; size = xfs_attr_leaf_newentsize ( namelen , valuelen , mp -> m_sb . sb_blocksize , local ) ; nblks = XFS_DAENTER_SPACE_RES ( mp , XFS_ATTR_FORK ) ; if ( * local ) { if ( size > ( mp -> m_sb . sb_blocksize >> 1 ) ) { nblks *= 2 ; } } else { <S2SV_StartBug> uint dblocks = XFS_B_TO_FSB ( mp , valuelen ) ; <S2SV_EndBug> nblks += dblocks ; nblks += XFS_NEXTENTADD_SPACE_RES ( mp , dblocks , XFS_ATTR_FORK ) ; } return nblks ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint dblocks = xfs_attr3_rmt_blocks <S2SV_ModEnd> ( mp ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0211\n\n```\nCWE-189 static ssize_t _archive_write_data ( struct archive * _a , const void * buff , size_t s ) { struct archive_write * a = ( struct archive_write * ) _a ; <S2SV_StartBug> archive_check_magic ( & a -> archive , ARCHIVE_WRITE_MAGIC , <S2SV_EndBug> <S2SV_StartBug> ARCHIVE_STATE_DATA , \"archive_write_data\" ) ; <S2SV_EndBug> archive_clear_error ( & a -> archive ) ; return ( ( a -> format_write_data ) ( a , buff , s ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) _a ; const size_t max_write = INT_MAX ; <S2SV_ModStart> , \"archive_write_data\" ) ; if ( s > max_write ) s = max_write\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0037\n\n```\nCWE-200 int raptor_turtle_writer_get_option ( raptor_turtle_writer * turtle_writer , raptor_option option ) { int result = - 1 ; switch ( option ) { case RAPTOR_OPTION_WRITER_AUTO_INDENT : result = TURTLE_WRITER_AUTO_INDENT ( turtle_writer ) ; break ; case RAPTOR_OPTION_WRITER_INDENT_WIDTH : result = turtle_writer -> indent ; break ; case RAPTOR_OPTION_WRITER_AUTO_EMPTY : case RAPTOR_OPTION_WRITER_XML_VERSION : case RAPTOR_OPTION_WRITER_XML_DECLARATION : case RAPTOR_OPTION_SCANNING : case RAPTOR_OPTION_ALLOW_NON_NS_ATTRIBUTES : case RAPTOR_OPTION_ALLOW_OTHER_PARSETYPES : case RAPTOR_OPTION_ALLOW_BAGID : case RAPTOR_OPTION_ALLOW_RDF_TYPE_RDF_LIST : case RAPTOR_OPTION_NORMALIZE_LANGUAGE : case RAPTOR_OPTION_NON_NFC_FATAL : case RAPTOR_OPTION_WARN_OTHER_PARSETYPES : case RAPTOR_OPTION_CHECK_RDF_ID : case RAPTOR_OPTION_HTML_TAG_SOUP : case RAPTOR_OPTION_MICROFORMATS : case RAPTOR_OPTION_HTML_LINK : case RAPTOR_OPTION_WWW_TIMEOUT : case RAPTOR_OPTION_STRICT : case RAPTOR_OPTION_NO_NET : case RAPTOR_OPTION_NO_FILE : <S2SV_StartBug> case RAPTOR_OPTION_RELATIVE_URIS : <S2SV_EndBug> case RAPTOR_OPTION_RESOURCE_BORDER : case RAPTOR_OPTION_LITERAL_BORDER : case RAPTOR_OPTION_BNODE_BORDER : case RAPTOR_OPTION_RESOURCE_FILL : case RAPTOR_OPTION_LITERAL_FILL : case RAPTOR_OPTION_BNODE_FILL : case RAPTOR_OPTION_JSON_CALLBACK : case RAPTOR_OPTION_JSON_EXTRA_DATA : case RAPTOR_OPTION_RSS_TRIPLES : case RAPTOR_OPTION_ATOM_ENTRY_URI : case RAPTOR_OPTION_PREFIX_ELEMENTS : case RAPTOR_OPTION_WRITE_BASE_URI : case RAPTOR_OPTION_WWW_HTTP_CACHE_CONTROL : case RAPTOR_OPTION_WWW_HTTP_USER_AGENT : case RAPTOR_OPTION_WWW_CERT_FILENAME : case RAPTOR_OPTION_WWW_CERT_TYPE : case RAPTOR_OPTION_WWW_CERT_PASSPHRASE : case RAPTOR_OPTION_WWW_SSL_VERIFY_PEER : case RAPTOR_OPTION_WWW_SSL_VERIFY_HOST : default : break ; } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RAPTOR_OPTION_NO_FILE : case RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES : case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static alias_ty alias_for_import_name ( struct compiling * c , const node * n , int store ) { identifier str , name ; loop : switch ( TYPE ( n ) ) { case import_as_name : { node * name_node = CHILD ( n , 0 ) ; str = NULL ; name = NEW_IDENTIFIER ( name_node ) ; if ( ! name ) return NULL ; if ( NCH ( n ) == 3 ) { node * str_node = CHILD ( n , 2 ) ; str = NEW_IDENTIFIER ( str_node ) ; if ( ! str ) return NULL ; if ( store && forbidden_name ( c , str , str_node , 0 ) ) return NULL ; } else { if ( forbidden_name ( c , name , name_node , 0 ) ) return NULL ; } return alias ( name , str , c -> c_arena ) ; } case dotted_as_name : if ( NCH ( n ) == 1 ) { n = CHILD ( n , 0 ) ; goto loop ; } else { node * asname_node = CHILD ( n , 2 ) ; alias_ty a = alias_for_import_name ( c , CHILD ( n , 0 ) , 0 ) ; if ( ! a ) return NULL ; assert ( ! a -> asname ) ; a -> asname = NEW_IDENTIFIER ( asname_node ) ; if ( ! a -> asname ) return NULL ; if ( forbidden_name ( c , a -> asname , asname_node , 0 ) ) return NULL ; return a ; } break ; case dotted_name : if ( NCH ( n ) == 1 ) { node * name_node = CHILD ( n , 0 ) ; name = NEW_IDENTIFIER ( name_node ) ; if ( ! name ) return NULL ; if ( store && forbidden_name ( c , name , name_node , 0 ) ) return NULL ; return alias ( name , NULL , c -> c_arena ) ; } else { int i ; size_t len ; char * s ; PyObject * uni ; len = 0 ; for ( i = 0 ; i < NCH ( n ) ; i += 2 ) len += strlen ( STR ( CHILD ( n , i ) ) ) + 1 ; len -- ; str = PyBytes_FromStringAndSize ( NULL , len ) ; if ( ! str ) return NULL ; s = PyBytes_AS_STRING ( str ) ; if ( ! s ) return NULL ; for ( i = 0 ; i < NCH ( n ) ; i += 2 ) { char * sch = STR ( CHILD ( n , i ) ) ; strcpy ( s , STR ( CHILD ( n , i ) ) ) ; s += strlen ( sch ) ; * s ++ = '.' ; } -- s ; * s = '\\\\0' ; uni = PyUnicode_DecodeUTF8 ( PyBytes_AS_STRING ( str ) , PyBytes_GET_SIZE ( str ) , NULL ) ; Py_DECREF ( str ) ; if ( ! uni ) return NULL ; str = uni ; PyUnicode_InternInPlace ( & str ) ; if ( PyArena_AddPyObject ( c -> c_arena , str ) < 0 ) { Py_DECREF ( str ) ; return NULL ; } return alias ( str , NULL , c -> c_arena ) ; } break ; case STAR : str = PyUnicode_InternFromString ( \"*\" ) ; <S2SV_StartBug> if ( PyArena_AddPyObject ( c -> c_arena , str ) < 0 ) { <S2SV_EndBug> Py_DECREF ( str ) ; return NULL ; } return alias ( str , NULL , c -> c_arena ) ; default : PyErr_Format ( PyExc_SystemError , \"unexpected<S2SV_blank>import<S2SV_blank>name:<S2SV_blank>%d\" , TYPE ( n ) ) ; return NULL ; } PyErr_SetString ( PyExc_SystemError , \"unhandled<S2SV_blank>import<S2SV_blank>name<S2SV_blank>condition\" ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! str ) return NULL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-494(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13083\n\n```\nCWE-494 const char * WinPKIErrorString ( void ) { static char error_string [ 64 ] ; DWORD error_code = GetLastError ( ) ; <S2SV_StartBug> if ( ( error_code >> 16 ) != 0x8009 ) <S2SV_EndBug> return WindowsErrorString ( ) ; switch ( error_code ) { case NTE_BAD_UID : return \"Bad<S2SV_blank>UID.\" ; case CRYPT_E_MSG_ERROR : return \"An<S2SV_blank>error<S2SV_blank>occurred<S2SV_blank>while<S2SV_blank>performing<S2SV_blank>an<S2SV_blank>operation<S2SV_blank>on<S2SV_blank>a<S2SV_blank>cryptographic<S2SV_blank>message.\" ; case CRYPT_E_UNKNOWN_ALGO : return \"Unknown<S2SV_blank>cryptographic<S2SV_blank>algorithm.\" ; case CRYPT_E_INVALID_MSG_TYPE : return \"Invalid<S2SV_blank>cryptographic<S2SV_blank>message<S2SV_blank>type.\" ; case CRYPT_E_HASH_VALUE : return \"The<S2SV_blank>hash<S2SV_blank>value<S2SV_blank>is<S2SV_blank>not<S2SV_blank>correct\" ; case CRYPT_E_ISSUER_SERIALNUMBER : return \"Invalid<S2SV_blank>issuer<S2SV_blank>and/or<S2SV_blank>serial<S2SV_blank>number.\" ; case CRYPT_E_BAD_LEN : return \"The<S2SV_blank>length<S2SV_blank>specified<S2SV_blank>for<S2SV_blank>the<S2SV_blank>output<S2SV_blank>data<S2SV_blank>was<S2SV_blank>insufficient.\" ; case CRYPT_E_BAD_ENCODE : return \"An<S2SV_blank>error<S2SV_blank>occurred<S2SV_blank>during<S2SV_blank>encode<S2SV_blank>or<S2SV_blank>decode<S2SV_blank>operation.\" ; case CRYPT_E_FILE_ERROR : return \"An<S2SV_blank>error<S2SV_blank>occurred<S2SV_blank>while<S2SV_blank>reading<S2SV_blank>or<S2SV_blank>writing<S2SV_blank>to<S2SV_blank>a<S2SV_blank>file.\" ; case CRYPT_E_NOT_FOUND : return \"Cannot<S2SV_blank>find<S2SV_blank>object<S2SV_blank>or<S2SV_blank>property.\" ; case CRYPT_E_EXISTS : return \"The<S2SV_blank>object<S2SV_blank>or<S2SV_blank>property<S2SV_blank>already<S2SV_blank>exists.\" ; case CRYPT_E_NO_PROVIDER : return \"No<S2SV_blank>provider<S2SV_blank>was<S2SV_blank>specified<S2SV_blank>for<S2SV_blank>the<S2SV_blank>store<S2SV_blank>or<S2SV_blank>object.\" ; case CRYPT_E_DELETED_PREV : return \"The<S2SV_blank>previous<S2SV_blank>certificate<S2SV_blank>or<S2SV_blank>CRL<S2SV_blank>context<S2SV_blank>was<S2SV_blank>deleted.\" ; case CRYPT_E_NO_MATCH : return \"Cannot<S2SV_blank>find<S2SV_blank>the<S2SV_blank>requested<S2SV_blank>object.\" ; case CRYPT_E_UNEXPECTED_MSG_TYPE : case CRYPT_E_NO_KEY_PROPERTY : case CRYPT_E_NO_DECRYPT_CERT : return \"Private<S2SV_blank>key<S2SV_blank>or<S2SV_blank>certificate<S2SV_blank>issue\" ; case CRYPT_E_BAD_MSG : return \"Not<S2SV_blank>a<S2SV_blank>cryptographic<S2SV_blank>message.\" ; case CRYPT_E_NO_SIGNER : return \"The<S2SV_blank>signed<S2SV_blank>cryptographic<S2SV_blank>message<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>a<S2SV_blank>signer<S2SV_blank>for<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>signer<S2SV_blank>index.\" ; case CRYPT_E_REVOKED : return \"The<S2SV_blank>certificate<S2SV_blank>is<S2SV_blank>revoked.\" ; case CRYPT_E_NO_REVOCATION_DLL : case CRYPT_E_NO_REVOCATION_CHECK : case CRYPT_E_REVOCATION_OFFLINE : case CRYPT_E_NOT_IN_REVOCATION_DATABASE : return \"Cannot<S2SV_blank>check<S2SV_blank>certificate<S2SV_blank>revocation.\" ; case CRYPT_E_INVALID_NUMERIC_STRING : case CRYPT_E_INVALID_PRINTABLE_STRING : case CRYPT_E_INVALID_IA5_STRING : case CRYPT_E_INVALID_X500_STRING : case CRYPT_E_NOT_CHAR_STRING : return \"Invalid<S2SV_blank>string.\" ; case CRYPT_E_SECURITY_SETTINGS : return \"The<S2SV_blank>cryptographic<S2SV_blank>operation<S2SV_blank>failed<S2SV_blank>due<S2SV_blank>to<S2SV_blank>a<S2SV_blank>local<S2SV_blank>security<S2SV_blank>option<S2SV_blank>setting.\" ; case CRYPT_E_NO_VERIFY_USAGE_CHECK : case CRYPT_E_VERIFY_USAGE_OFFLINE : return \"Cannot<S2SV_blank>complete<S2SV_blank>usage<S2SV_blank>check.\" ; case CRYPT_E_NO_TRUSTED_SIGNER : <S2SV_StartBug> return \"None<S2SV_blank>of<S2SV_blank>the<S2SV_blank>signers<S2SV_blank>of<S2SV_blank>the<S2SV_blank>cryptographic<S2SV_blank>message<S2SV_blank>or<S2SV_blank>certificate<S2SV_blank>trust<S2SV_blank>list<S2SV_blank>is<S2SV_blank>trusted.\" ; <S2SV_EndBug> default : static_sprintf ( error_string , \"Unknown<S2SV_blank>PKI<S2SV_blank>error<S2SV_blank>0x%08lX\" , error_code ) ; return error_string ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( ( <S2SV_ModStart> != 0x8009 ) && ( ( error_code >> 16 ) != 0x800B ) ) <S2SV_ModStart> : return \"None<S2SV_blank>of<S2SV_blank>the<S2SV_blank>signers<S2SV_blank>of<S2SV_blank>the<S2SV_blank>cryptographic<S2SV_blank>message<S2SV_blank>or<S2SV_blank>certificate<S2SV_blank>trust<S2SV_blank>list<S2SV_blank>is<S2SV_blank>trusted.\" ; case CERT_E_UNTRUSTEDROOT : return \"The<S2SV_blank>root<S2SV_blank>certificate<S2SV_blank>is<S2SV_blank>not<S2SV_blank>trusted.\" ; case TRUST_E_NOSIGNATURE : return \"Not<S2SV_blank>digitally<S2SV_blank>signed.\" ; case TRUST_E_EXPLICIT_DISTRUST : return \"One<S2SV_blank>of<S2SV_blank>the<S2SV_blank>certificates<S2SV_blank>used<S2SV_blank>was<S2SV_blank>marked<S2SV_blank>as<S2SV_blank>untrusted<S2SV_blank>by<S2SV_blank>the<S2SV_blank>user.\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int x86_pmu_handle_irq ( struct pt_regs * regs ) { struct perf_sample_data data ; struct cpu_hw_events * cpuc ; struct perf_event * event ; int idx , handled = 0 ; u64 val ; perf_sample_data_init ( & data , 0 ) ; cpuc = & __get_cpu_var ( cpu_hw_events ) ; apic_write ( APIC_LVTPC , APIC_DM_NMI ) ; for ( idx = 0 ; idx < x86_pmu . num_counters ; idx ++ ) { if ( ! test_bit ( idx , cpuc -> active_mask ) ) { if ( __test_and_clear_bit ( idx , cpuc -> running ) ) handled ++ ; continue ; } event = cpuc -> events [ idx ] ; val = x86_perf_event_update ( event ) ; if ( val & ( 1ULL << ( x86_pmu . cntval_bits - 1 ) ) ) continue ; handled ++ ; data . period = event -> hw . last_period ; if ( ! x86_perf_event_set_period ( event ) ) continue ; <S2SV_StartBug> if ( perf_event_overflow ( event , 1 , & data , regs ) ) <S2SV_EndBug> x86_pmu_stop ( event , 0 ) ; } if ( handled ) inc_irq_stat ( apic_perf_irqs ) ; return handled ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( event , <S2SV_ModEnd> & data ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_get_frame_buffer ( void * cb_priv , size_t min_size , vpx_codec_frame_buffer_t * fb ) { int i ; InternalFrameBufferList * const int_fb_list = ( InternalFrameBufferList * ) cb_priv ; if ( int_fb_list == NULL ) return - 1 ; for ( i = 0 ; i < int_fb_list -> num_internal_frame_buffers ; ++ i ) { if ( ! int_fb_list -> int_fb [ i ] . in_use ) break ; } if ( i == int_fb_list -> num_internal_frame_buffers ) return - 1 ; if ( int_fb_list -> int_fb [ i ] . size < min_size ) { int_fb_list -> int_fb [ i ] . data = ( uint8_t * ) vpx_realloc ( int_fb_list -> int_fb [ i ] . data , min_size ) ; if ( ! int_fb_list -> int_fb [ i ] . data ) return - 1 ; <S2SV_StartBug> int_fb_list -> int_fb [ i ] . size = min_size ; <S2SV_EndBug> } fb -> data = int_fb_list -> int_fb [ i ] . data ; fb -> size = int_fb_list -> int_fb [ i ] . size ; int_fb_list -> int_fb [ i ] . in_use = 1 ; fb -> priv = & int_fb_list -> int_fb [ i ] ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - 1 ; memset ( int_fb_list -> int_fb [ i ] . data , 0 , min_size ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 int wait_for_key_construction ( struct key * key , bool intr ) { int ret ; ret = wait_on_bit ( & key -> flags , KEY_FLAG_USER_CONSTRUCT , intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE ) ; if ( ret ) return - ERESTARTSYS ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) { <S2SV_EndBug> smp_rmb ( ) ; return key -> reject_error ; } return key_validate ( key ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ERESTARTSYS ; ret = key_read_state ( key ) ; if ( ret < 0 ) return ret ; <S2SV_ModEnd> return key_validate (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10250\n\n```\nCWE-476 jp2_box_t * jp2_box_get ( jas_stream_t * in ) { jp2_box_t * box ; jp2_boxinfo_t * boxinfo ; jas_stream_t * tmpstream ; uint_fast32_t len ; uint_fast64_t extlen ; bool dataflag ; box = 0 ; tmpstream = 0 ; if ( ! ( box = jas_malloc ( sizeof ( jp2_box_t ) ) ) ) { goto error ; } box -> ops = & jp2_boxinfo_unk . ops ; if ( jp2_getuint32 ( in , & len ) || jp2_getuint32 ( in , & box -> type ) ) { goto error ; } boxinfo = jp2_boxinfolookup ( box -> type ) ; <S2SV_StartBug> box -> info = boxinfo ; <S2SV_EndBug> box -> ops = & boxinfo -> ops ; box -> len = len ; JAS_DBGLOG ( 10 , ( \"preliminary<S2SV_blank>processing<S2SV_blank>of<S2SV_blank>JP2<S2SV_blank>box:<S2SV_blank>type=%c%s%c<S2SV_blank>(0x%08x);<S2SV_blank>length=%d\\\\n\" , \\'\"\\' , boxinfo -> name , \\'\"\\' , box -> type , box -> len ) ) ; if ( box -> len == 1 ) { if ( jp2_getuint64 ( in , & extlen ) ) { goto error ; } if ( extlen > 0xffffffffUL ) { jas_eprintf ( \"warning:<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>large<S2SV_blank>64-bit<S2SV_blank>box<S2SV_blank>length\\\\n\" ) ; extlen = 0xffffffffUL ; } box -> len = extlen ; box -> datalen = extlen - JP2_BOX_HDRLEN ( true ) ; } else { box -> datalen = box -> len - JP2_BOX_HDRLEN ( false ) ; } if ( box -> len != 0 && box -> len < 8 ) { goto error ; } dataflag = ! ( box -> info -> flags & ( JP2_BOX_SUPER | JP2_BOX_NODATA ) ) ; if ( dataflag ) { if ( ! ( tmpstream = jas_stream_memopen ( 0 , 0 ) ) ) { goto error ; } if ( jas_stream_copy ( tmpstream , in , box -> datalen ) ) { <S2SV_StartBug> box -> ops = & jp2_boxinfo_unk . ops ; <S2SV_EndBug> jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; goto error ; } <S2SV_StartBug> jas_stream_rewind ( tmpstream ) ; <S2SV_EndBug> if ( box -> ops -> getdata ) { if ( ( * box -> ops -> getdata ) ( box , tmpstream ) ) { jas_eprintf ( \"cannot<S2SV_blank>parse<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ; goto error ; } } jas_stream_close ( tmpstream ) ; } if ( jas_getdbglevel ( ) >= 1 ) { jp2_box_dump ( box , stderr ) ; } return box ; error : if ( box ) { jp2_box_destroy ( box ) ; } if ( tmpstream ) { jas_stream_close ( tmpstream ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> info = boxinfo <S2SV_ModEnd> ; box -> <S2SV_ModStart> ) ) { <S2SV_ModEnd> jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" <S2SV_ModStart> ( tmpstream ) ; box -> ops = & boxinfo -> ops\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 static int evtchn_fifo_percpu_deinit ( unsigned int cpu ) { <S2SV_StartBug> __evtchn_fifo_handle_events ( cpu , true ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( cpu , NULL <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int ASN1_item_verify ( const ASN1_ITEM * it , X509_ALGOR * a , ASN1_BIT_STRING * signature , void * asn , EVP_PKEY * pkey ) { EVP_MD_CTX ctx ; unsigned char * buf_in = NULL ; int ret = - 1 , inl ; int mdnid , pknid ; if ( ! pkey ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_PASSED_NULL_PARAMETER ) ; return - 1 ; } if ( signature -> type == V_ASN1_BIT_STRING && signature -> flags & 0x7 ) { <S2SV_StartBug> ASN1err ( ASN1_F_ASN1_VERIFY , ASN1_R_INVALID_BIT_STRING_BITS_LEFT ) ; <S2SV_EndBug> return - 1 ; } EVP_MD_CTX_init ( & ctx ) ; if ( ! OBJ_find_sigid_algs ( OBJ_obj2nid ( a -> algorithm ) , & mdnid , & pknid ) ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM ) ; goto err ; } if ( mdnid == NID_undef ) { if ( ! pkey -> ameth || ! pkey -> ameth -> item_verify ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM ) ; goto err ; } ret = pkey -> ameth -> item_verify ( & ctx , it , asn , a , signature , pkey ) ; if ( ret != 2 ) goto err ; ret = - 1 ; } else { const EVP_MD * type ; type = EVP_get_digestbynid ( mdnid ) ; if ( type == NULL ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM ) ; goto err ; } if ( EVP_PKEY_type ( pknid ) != pkey -> ameth -> pkey_id ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_WRONG_PUBLIC_KEY_TYPE ) ; goto err ; } if ( ! EVP_DigestVerifyInit ( & ctx , NULL , type , NULL , pkey ) ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } } inl = ASN1_item_i2d ( asn , & buf_in , it ) ; if ( buf_in == NULL ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_MALLOC_FAILURE ) ; goto err ; } ret = EVP_DigestVerifyUpdate ( & ctx , buf_in , inl ) ; OPENSSL_cleanse ( buf_in , ( unsigned int ) inl ) ; OPENSSL_free ( buf_in ) ; if ( ! ret ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; goto err ; } ret = - 1 ; if ( EVP_DigestVerifyFinal ( & ctx , signature -> data , ( size_t ) signature -> length ) <= 0 ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } ret = 1 ; err : EVP_MD_CTX_cleanup ( & ctx ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY <S2SV_ModEnd> , ASN1_R_INVALID_BIT_STRING_BITS_LEFT )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7163\n\n```\nCWE-125 opj_pi_iterator_t * opj_pi_create_decode ( opj_image_t * p_image , opj_cp_t * p_cp , OPJ_UINT32 p_tile_no ) { OPJ_UINT32 pino ; OPJ_UINT32 compno , resno ; OPJ_UINT32 * l_tmp_data ; OPJ_UINT32 * * l_tmp_ptr ; OPJ_UINT32 l_max_res ; OPJ_UINT32 l_max_prec ; OPJ_INT32 l_tx0 , l_tx1 , l_ty0 , l_ty1 ; OPJ_UINT32 l_dx_min , l_dy_min ; OPJ_UINT32 l_bound ; OPJ_UINT32 l_step_p , l_step_c , l_step_r , l_step_l ; OPJ_UINT32 l_data_stride ; opj_pi_iterator_t * l_pi = 00 ; opj_tcp_t * l_tcp = 00 ; const opj_tccp_t * l_tccp = 00 ; opj_pi_comp_t * l_current_comp = 00 ; opj_image_comp_t * l_img_comp = 00 ; opj_pi_iterator_t * l_current_pi = 00 ; OPJ_UINT32 * l_encoding_value_ptr = 00 ; assert ( p_cp != 00 ) ; assert ( p_image != 00 ) ; assert ( p_tile_no < p_cp -> tw * p_cp -> th ) ; l_tcp = & p_cp -> tcps [ p_tile_no ] ; l_bound = l_tcp -> numpocs + 1 ; l_data_stride = 4 * OPJ_J2K_MAXRLVLS ; l_tmp_data = ( OPJ_UINT32 * ) opj_malloc ( l_data_stride * p_image -> numcomps * sizeof ( OPJ_UINT32 ) ) ; if ( ! l_tmp_data ) { return 00 ; } l_tmp_ptr = ( OPJ_UINT32 * * ) opj_malloc ( p_image -> numcomps * sizeof ( OPJ_UINT32 * ) ) ; if ( ! l_tmp_ptr ) { opj_free ( l_tmp_data ) ; return 00 ; } l_pi = opj_pi_create ( p_image , p_cp , p_tile_no ) ; if ( ! l_pi ) { opj_free ( l_tmp_data ) ; opj_free ( l_tmp_ptr ) ; return 00 ; } l_encoding_value_ptr = l_tmp_data ; for ( compno = 0 ; compno < p_image -> numcomps ; ++ compno ) { l_tmp_ptr [ compno ] = l_encoding_value_ptr ; l_encoding_value_ptr += l_data_stride ; } opj_get_all_encoding_parameters ( p_image , p_cp , p_tile_no , & l_tx0 , & l_tx1 , & l_ty0 , & l_ty1 , & l_dx_min , & l_dy_min , & l_max_prec , & l_max_res , l_tmp_ptr ) ; l_step_p = 1 ; l_step_c = l_max_prec * l_step_p ; l_step_r = p_image -> numcomps * l_step_c ; l_step_l = l_max_res * l_step_r ; l_current_pi = l_pi ; <S2SV_StartBug> l_current_pi -> include = ( OPJ_INT16 * ) opj_calloc ( ( l_tcp -> numlayers + 1 ) * l_step_l , sizeof ( OPJ_INT16 ) ) ; <S2SV_EndBug> <S2SV_StartBug> if <S2SV_EndBug> ( ! l_current_pi -> include ) { opj_free ( l_tmp_data ) ; opj_free ( l_tmp_ptr ) ; opj_pi_destroy ( l_pi , l_bound ) ; return 00 ; } l_current_comp = l_current_pi -> comps ; l_img_comp = p_image -> comps ; l_tccp = l_tcp -> tccps ; l_current_pi -> tx0 = l_tx0 ; l_current_pi -> ty0 = l_ty0 ; l_current_pi -> tx1 = l_tx1 ; l_current_pi -> ty1 = l_ty1 ; l_current_pi -> step_p = l_step_p ; l_current_pi -> step_c = l_step_c ; l_current_pi -> step_r = l_step_r ; l_current_pi -> step_l = l_step_l ; for ( compno = 0 ; compno < l_current_pi -> numcomps ; ++ compno ) { opj_pi_resolution_t * l_res = l_current_comp -> resolutions ; l_encoding_value_ptr = l_tmp_ptr [ compno ] ; l_current_comp -> dx = l_img_comp -> dx ; l_current_comp -> dy = l_img_comp -> dy ; for ( resno = 0 ; resno < l_current_comp -> numresolutions ; resno ++ ) { l_res -> pdx = * ( l_encoding_value_ptr ++ ) ; l_res -> pdy = * ( l_encoding_value_ptr ++ ) ; l_res -> pw = * ( l_encoding_value_ptr ++ ) ; l_res -> ph = * ( l_encoding_value_ptr ++ ) ; ++ l_res ; } ++ l_current_comp ; ++ l_img_comp ; ++ l_tccp ; } ++ l_current_pi ; for ( pino = 1 ; pino < l_bound ; ++ pino ) { l_current_comp = l_current_pi -> comps ; l_img_comp = p_image -> comps ; l_tccp = l_tcp -> tccps ; l_current_pi -> tx0 = l_tx0 ; l_current_pi -> ty0 = l_ty0 ; l_current_pi -> tx1 = l_tx1 ; l_current_pi -> ty1 = l_ty1 ; l_current_pi -> step_p = l_step_p ; l_current_pi -> step_c = l_step_c ; l_current_pi -> step_r = l_step_r ; l_current_pi -> step_l = l_step_l ; for ( compno = 0 ; compno < l_current_pi -> numcomps ; ++ compno ) { opj_pi_resolution_t * l_res = l_current_comp -> resolutions ; l_encoding_value_ptr = l_tmp_ptr [ compno ] ; l_current_comp -> dx = l_img_comp -> dx ; l_current_comp -> dy = l_img_comp -> dy ; for ( resno = 0 ; resno < l_current_comp -> numresolutions ; resno ++ ) { l_res -> pdx = * ( l_encoding_value_ptr ++ ) ; l_res -> pdy = * ( l_encoding_value_ptr ++ ) ; l_res -> pw = * ( l_encoding_value_ptr ++ ) ; l_res -> ph = * ( l_encoding_value_ptr ++ ) ; ++ l_res ; } ++ l_current_comp ; ++ l_img_comp ; ++ l_tccp ; } l_current_pi -> include = ( l_current_pi - 1 ) -> include ; ++ l_current_pi ; } opj_free ( l_tmp_data ) ; l_tmp_data = 00 ; opj_free ( l_tmp_ptr ) ; l_tmp_ptr = 00 ; if ( l_tcp -> POC ) { opj_pi_update_decode_poc ( l_pi , l_tcp , l_max_prec , l_max_res ) ; } else { opj_pi_update_decode_not_poc ( l_pi , l_tcp , l_max_prec , l_max_res ) ; } return l_pi ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> include = 00 ; if ( l_step_l <= ( SIZE_MAX / ( l_tcp -> numlayers + 1U ) ) ) { l_current_pi -> include = <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16643\n\n```\nCWE-20 static Image * ReadPWPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char filename [ MagickPathExtent ] ; FILE * file ; Image * image , * next_image , * pwp_image ; ImageInfo * read_info ; int c , unique_file ; MagickBooleanType status ; register Image * p ; register ssize_t i ; size_t filesize , length ; ssize_t count ; unsigned char magick [ MagickPathExtent ] ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } pwp_image = image ; memset ( magick , 0 , sizeof ( magick ) ) ; count = ReadBlob ( pwp_image , 5 , magick ) ; if ( ( count != 5 ) || ( LocaleNCompare ( ( char * ) magick , \"SFW95\" , 5 ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; read_info = CloneImageInfo ( image_info ) ; ( void ) SetImageInfoProgressMonitor ( read_info , ( MagickProgressMonitor ) NULL , ( void * ) NULL ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; unique_file = AcquireUniqueFileResource ( filename ) ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"sfw:%s\" , filename ) ; for ( ; ; ) { ( void ) memset ( magick , 0 , sizeof ( magick ) ) ; for ( c = ReadBlobByte ( pwp_image ) ; c != EOF ; c = ReadBlobByte ( pwp_image ) ) { for ( i = 0 ; i < 17 ; i ++ ) magick [ i ] = magick [ i + 1 ] ; magick [ 17 ] = ( unsigned char ) c ; if ( LocaleNCompare ( ( char * ) ( magick + 12 ) , \"SFW94A\" , 6 ) == 0 ) break ; } if ( c == EOF ) { ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } if ( LocaleNCompare ( ( char * ) ( magick + 12 ) , \"SFW94A\" , 6 ) != 0 ) { ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } file = ( FILE * ) NULL ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( ( unique_file == - 1 ) || ( file == ( FILE * ) NULL ) ) { ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; ThrowFileException ( exception , FileOpenError , \"UnableToWriteFile\" , image -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = fwrite ( \"SFW94A\" , 1 , 6 , file ) ; ( void ) length ; filesize = 65535UL * magick [ 2 ] + 256L * magick [ 1 ] + magick [ 0 ] ; for ( i = 0 ; i < ( ssize_t ) filesize ; i ++ ) { c = ReadBlobByte ( pwp_image ) ; if ( c == EOF ) break ; <S2SV_StartBug> ( void ) fputc ( c , file ) ; <S2SV_EndBug> } ( void ) fclose ( file ) ; if ( c == EOF ) { ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } next_image = ReadImage ( read_info , exception ) ; if ( next_image == ( Image * ) NULL ) break ; ( void ) FormatLocaleString ( next_image -> filename , MagickPathExtent , \"slide_%02ld.sfw\" , ( long ) next_image -> scene ) ; if ( image == ( Image * ) NULL ) image = next_image ; else { for ( p = image ; p -> next != ( Image * ) NULL ; p = GetNextImageInList ( p ) ) ; next_image -> previous = p ; next_image -> scene = p -> scene + 1 ; p -> next = next_image ; } if ( image_info -> number_scenes != 0 ) if ( next_image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( pwp_image ) , GetBlobSize ( pwp_image ) ) ; if ( status == MagickFalse ) break ; } if ( unique_file != - 1 ) ( void ) close ( unique_file ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( image != ( Image * ) NULL ) { if ( EOFBlob ( image ) != MagickFalse ) { char * message ; message = GetExceptionMessage ( errno ) ; ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"UnexpectedEndOfFile\" , \"`%s\\':<S2SV_blank>%s\" , image -> filename , message ) ; message = DestroyString ( message ) ; } ( void ) CloseBlob ( image ) ; } return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; if ( <S2SV_ModEnd> fputc ( c <S2SV_ModStart> , file ) != c ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static int __key_instantiate_and_link ( struct key * key , struct key_preparsed_payload * prep , struct key * keyring , struct key * authkey , struct assoc_array_edit * * _edit ) { int ret , awaken ; key_check ( key ) ; key_check ( keyring ) ; awaken = 0 ; ret = - EBUSY ; mutex_lock ( & key_construction_mutex ) ; <S2SV_StartBug> if ( ! test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) { <S2SV_EndBug> ret = key -> type -> instantiate ( key , prep ) ; if ( ret == 0 ) { atomic_inc ( & key -> user -> nikeys ) ; <S2SV_StartBug> set_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ; <S2SV_EndBug> if ( test_and_clear_bit ( KEY_FLAG_USER_CONSTRUCT , & key -> flags ) ) awaken = 1 ; if ( keyring ) { if ( test_bit ( KEY_FLAG_KEEP , & keyring -> flags ) ) set_bit ( KEY_FLAG_KEEP , & key -> flags ) ; __key_link ( key , _edit ) ; } if ( authkey ) key_revoke ( authkey ) ; if ( prep -> expiry != TIME_T_MAX ) { key -> expiry = prep -> expiry ; key_schedule_gc ( prep -> expiry + key_gc_delay ) ; } } } mutex_unlock ( & key_construction_mutex ) ; if ( awaken ) wake_up_bit ( & key -> flags , KEY_FLAG_USER_CONSTRUCT ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key -> state == KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) { ret <S2SV_ModStart> nikeys ) ; mark_key_instantiated ( key , 0 <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_get_tile_n_bits ( int mi_cols , int * min_log2_tile_cols , int * max_log2_tile_cols ) { <S2SV_StartBug> const int sb_cols = mi_cols_aligned_to_sb ( mi_cols ) >> MI_BLOCK_SIZE_LOG2 ; <S2SV_EndBug> <S2SV_StartBug> int min_log2 = 0 , max_log2 = 0 ; <S2SV_EndBug> while ( ( sb_cols >> max_log2 ) >= MIN_TILE_WIDTH_B64 ) ++ max_log2 ; -- max_log2 ; if ( max_log2 < 0 ) max_log2 = 0 ; while ( ( MAX_TILE_WIDTH_B64 << min_log2 ) < sb_cols ) ++ min_log2 ; assert ( min_log2 <= max_log2 ) ; <S2SV_StartBug> * min_log2_tile_cols = min_log2 ; <S2SV_EndBug> <S2SV_StartBug> * max_log2_tile_cols = max_log2 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { const int sb64_cols <S2SV_ModEnd> = mi_cols_aligned_to_sb ( <S2SV_ModStart> >> MI_BLOCK_SIZE_LOG2 ; <S2SV_ModEnd> * min_log2_tile_cols = <S2SV_ModStart> * min_log2_tile_cols = get_min_log2_tile_cols ( sb64_cols ) <S2SV_ModEnd> ; * max_log2_tile_cols <S2SV_ModStart> * max_log2_tile_cols = get_max_log2_tile_cols ( sb64_cols ) ; assert ( * min_log2_tile_cols <= * max_log2_tile_cols ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_loop_filter_frame_init ( VP9_COMMON * cm , int default_filt_lvl ) { int seg_id ; const int scale = 1 << ( default_filt_lvl >> 5 ) ; loop_filter_info_n * const lfi = & cm -> lf_info ; struct loopfilter * const lf = & cm -> lf ; const struct segmentation * const seg = & cm -> seg ; if ( lf -> last_sharpness_level != lf -> sharpness_level ) { update_sharpness ( lfi , lf -> sharpness_level ) ; lf -> last_sharpness_level = lf -> sharpness_level ; } for ( seg_id = 0 ; seg_id < MAX_SEGMENTS ; seg_id ++ ) { int lvl_seg = default_filt_lvl ; <S2SV_StartBug> if ( vp9_segfeature_active ( seg , seg_id , SEG_LVL_ALT_LF ) ) { <S2SV_EndBug> <S2SV_StartBug> const int data = vp9_get_segdata ( seg , seg_id , SEG_LVL_ALT_LF ) ; <S2SV_EndBug> lvl_seg = clamp ( seg -> abs_delta == SEGMENT_ABSDATA ? data : default_filt_lvl + data , 0 , MAX_LOOP_FILTER ) ; } if ( ! lf -> mode_ref_delta_enabled ) { <S2SV_StartBug> vpx_memset ( lfi -> lvl [ seg_id ] , lvl_seg , sizeof ( lfi -> lvl [ seg_id ] ) ) ; <S2SV_EndBug> } else { int ref , mode ; const int intra_lvl = lvl_seg + lf -> ref_deltas [ INTRA_FRAME ] * scale ; lfi -> lvl [ seg_id ] [ INTRA_FRAME ] [ 0 ] = clamp ( intra_lvl , 0 , MAX_LOOP_FILTER ) ; for ( ref = LAST_FRAME ; ref < MAX_REF_FRAMES ; ++ ref ) { for ( mode = 0 ; mode < MAX_MODE_LF_DELTAS ; ++ mode ) { const int inter_lvl = lvl_seg + lf -> ref_deltas [ ref ] * scale + lf -> mode_deltas [ mode ] * scale ; lfi -> lvl [ seg_id ] [ ref ] [ mode ] = clamp ( inter_lvl , 0 , MAX_LOOP_FILTER ) ; } } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( segfeature_active <S2SV_ModEnd> ( seg , <S2SV_ModStart> int data = get_segdata <S2SV_ModEnd> ( seg , <S2SV_ModStart> mode_ref_delta_enabled ) { memset <S2SV_ModEnd> ( lfi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7191\n\n```\nCWE-476 static int tun_set_iff ( struct net * net , struct file * file , struct ifreq * ifr ) { struct tun_struct * tun ; struct tun_file * tfile = file -> private_data ; struct net_device * dev ; int err ; if ( tfile -> detached ) return - EINVAL ; dev = __dev_get_by_name ( net , ifr -> ifr_name ) ; if ( dev ) { if ( ifr -> ifr_flags & IFF_TUN_EXCL ) return - EBUSY ; if ( ( ifr -> ifr_flags & IFF_TUN ) && dev -> netdev_ops == & tun_netdev_ops ) tun = netdev_priv ( dev ) ; else if ( ( ifr -> ifr_flags & IFF_TAP ) && dev -> netdev_ops == & tap_netdev_ops ) tun = netdev_priv ( dev ) ; else return - EINVAL ; if ( ! ! ( ifr -> ifr_flags & IFF_MULTI_QUEUE ) != ! ! ( tun -> flags & IFF_MULTI_QUEUE ) ) return - EINVAL ; if ( tun_not_capable ( tun ) ) return - EPERM ; err = security_tun_dev_open ( tun -> security ) ; if ( err < 0 ) return err ; err = tun_attach ( tun , file , ifr -> ifr_flags & IFF_NOFILTER ) ; if ( err < 0 ) return err ; if ( tun -> flags & IFF_MULTI_QUEUE && ( tun -> numqueues + tun -> numdisabled > 1 ) ) { return 0 ; } } else { char * name ; unsigned long flags = 0 ; int queues = ifr -> ifr_flags & IFF_MULTI_QUEUE ? MAX_TAP_QUEUES : 1 ; if ( ! ns_capable ( net -> user_ns , CAP_NET_ADMIN ) ) return - EPERM ; err = security_tun_dev_create ( ) ; if ( err < 0 ) return err ; if ( ifr -> ifr_flags & IFF_TUN ) { flags |= IFF_TUN ; name = \"tun%d\" ; } else if ( ifr -> ifr_flags & IFF_TAP ) { flags |= IFF_TAP ; name = \"tap%d\" ; } else return - EINVAL ; if ( * ifr -> ifr_name ) name = ifr -> ifr_name ; dev = alloc_netdev_mqs ( sizeof ( struct tun_struct ) , name , NET_NAME_UNKNOWN , tun_setup , queues , queues ) ; if ( ! dev ) return - ENOMEM ; <S2SV_StartBug> dev_net_set ( dev , net ) ; <S2SV_EndBug> dev -> rtnl_link_ops = & tun_link_ops ; dev -> ifindex = tfile -> ifindex ; dev -> sysfs_groups [ 0 ] = & tun_attr_group ; tun = netdev_priv ( dev ) ; tun -> dev = dev ; tun -> flags = flags ; tun -> txflt . count = 0 ; tun -> vnet_hdr_sz = sizeof ( struct virtio_net_hdr ) ; tun -> align = NET_SKB_PAD ; tun -> filter_attached = false ; tun -> sndbuf = tfile -> socket . sk -> sk_sndbuf ; tun -> rx_batched = 0 ; tun -> pcpu_stats = netdev_alloc_pcpu_stats ( struct tun_pcpu_stats ) ; if ( ! tun -> pcpu_stats ) { err = - ENOMEM ; goto err_free_dev ; } spin_lock_init ( & tun -> lock ) ; err = security_tun_dev_alloc_security ( & tun -> security ) ; if ( err < 0 ) goto err_free_stat ; tun_net_init ( dev ) ; tun_flow_init ( tun ) ; dev -> hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | TUN_USER_FEATURES | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX ; dev -> features = dev -> hw_features | NETIF_F_LLTX ; dev -> vlan_features = dev -> features & ~ ( NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX ) ; INIT_LIST_HEAD ( & tun -> disabled ) ; err = tun_attach ( tun , file , false ) ; if ( err < 0 ) goto err_free_flow ; err = register_netdevice ( tun -> dev ) ; if ( err < 0 ) goto err_detach ; } netif_carrier_on ( tun -> dev ) ; tun_debug ( KERN_INFO , tun , \"tun_set_iff\\\\n\" ) ; tun -> flags = ( tun -> flags & ~ TUN_FEATURES ) | ( ifr -> ifr_flags & TUN_FEATURES ) ; if ( netif_running ( tun -> dev ) ) netif_tx_wake_all_queues ( tun -> dev ) ; strcpy ( ifr -> ifr_name , tun -> dev -> name ) ; return 0 ; err_detach : tun_detach_all ( dev ) ; goto err_free_dev ; err_free_flow : tun_flow_uninit ( tun ) ; security_tun_dev_free_security ( tun -> security ) ; err_free_stat : free_percpu ( tun -> pcpu_stats ) ; err_free_dev : free_netdev ( dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOMEM ; err = dev_get_valid_name ( net , dev , name ) ; if ( err ) goto err_free_dev ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int em_ret_near_imm ( struct x86_emulate_ctxt * ctxt ) { int rc ; <S2SV_StartBug> ctxt -> dst . type = OP_REG ; <S2SV_EndBug> ctxt -> dst . addr . reg = & ctxt -> _eip ; ctxt -> dst . bytes = ctxt -> op_bytes ; <S2SV_StartBug> rc = emulate_pop ( ctxt , & ctxt -> dst . val , ctxt -> op_bytes ) ; <S2SV_EndBug> if ( rc != X86EMUL_CONTINUE ) return rc ; rsp_increment ( ctxt , ctxt -> src . val ) ; return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int rc ; unsigned long eip <S2SV_ModEnd> ; rc = <S2SV_ModStart> ctxt , & eip <S2SV_ModEnd> , ctxt -> <S2SV_ModStart> ctxt -> op_bytes ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; rc = assign_eip_near ( ctxt , eip\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19082\n\n```\nCWE-401 struct resource_pool * dce110_create_resource_pool ( uint8_t num_virtual_links , struct dc * dc , struct hw_asic_id asic_id ) { struct dce110_resource_pool * pool = kzalloc ( sizeof ( struct dce110_resource_pool ) , GFP_KERNEL ) ; if ( ! pool ) return NULL ; if ( construct ( num_virtual_links , dc , pool , asic_id ) ) return & pool -> base ; <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> base ; kfree ( pool ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2686\n\n```\nCWE-264 SYSCALL_DEFINE6 ( recvfrom , int , fd , void __user * , ubuf , size_t , size , unsigned int , flags , struct sockaddr __user * , addr , int __user * , addr_len ) { struct socket * sock ; struct iovec iov ; struct msghdr msg ; struct sockaddr_storage address ; int err , err2 ; int fput_needed ; if ( size > INT_MAX ) <S2SV_StartBug> size = INT_MAX ; <S2SV_EndBug> sock = sockfd_lookup_light ( fd , & err , & fput_needed ) ; if ( ! sock ) goto out ; msg . msg_control = NULL ; msg . msg_controllen = 0 ; iov . iov_len = size ; iov . iov_base = ubuf ; iov_iter_init ( & msg . msg_iter , READ , & iov , 1 , size ) ; msg . msg_name = addr ? ( struct sockaddr * ) & address : NULL ; msg . msg_namelen = 0 ; if ( sock -> file -> f_flags & O_NONBLOCK ) flags |= MSG_DONTWAIT ; err = sock_recvmsg ( sock , & msg , size , flags ) ; if ( err >= 0 && addr != NULL ) { err2 = move_addr_to_user ( & address , msg . msg_namelen , addr , addr_len ) ; if ( err2 < 0 ) err = err2 ; } fput_light ( sock -> file , fput_needed ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size = INT_MAX ; if ( unlikely ( ! access_ok ( VERIFY_WRITE , ubuf , size ) ) ) return - EFAULT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3525\n\n```\nCWE-20 static void _out_verify ( conn_t out , nad_t nad ) { int attr , ns ; jid_t from , to ; conn_t in ; char * rkey ; int valid ; attr = nad_find_attr ( nad , 0 , - 1 , \"from\" , NULL ) ; if ( attr < 0 || ( from = jid_new ( NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ) == NULL ) { log_debug ( ZONE , \"missing<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>from<S2SV_blank>on<S2SV_blank>db<S2SV_blank>verify<S2SV_blank>packet\" ) ; nad_free ( nad ) ; return ; } attr = nad_find_attr ( nad , 0 , - 1 , \"to\" , NULL ) ; if ( attr < 0 || ( to = jid_new ( NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ) == NULL ) { log_debug ( ZONE , \"missing<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>to<S2SV_blank>on<S2SV_blank>db<S2SV_blank>verify<S2SV_blank>packet\" ) ; jid_free ( from ) ; nad_free ( nad ) ; return ; } attr = nad_find_attr ( nad , 0 , - 1 , \"id\" , NULL ) ; if ( attr < 0 ) { log_debug ( ZONE , \"missing<S2SV_blank>id<S2SV_blank>on<S2SV_blank>db<S2SV_blank>verify<S2SV_blank>packet\" ) ; jid_free ( from ) ; jid_free ( to ) ; nad_free ( nad ) ; return ; } in = xhash_getx ( out -> s2s -> in , NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ; if ( in == NULL ) { log_debug ( ZONE , \"got<S2SV_blank>a<S2SV_blank>verify<S2SV_blank>for<S2SV_blank>incoming<S2SV_blank>conn<S2SV_blank>%.*s,<S2SV_blank>but<S2SV_blank>it<S2SV_blank>doesn\\'t<S2SV_blank>exist,<S2SV_blank>dropping<S2SV_blank>the<S2SV_blank>packet\" , NAD_AVAL_L ( nad , attr ) , NAD_AVAL ( nad , attr ) ) ; jid_free ( from ) ; jid_free ( to ) ; nad_free ( nad ) ; return ; } rkey = s2s_route_key ( NULL , to -> domain , from -> domain ) ; attr = nad_find_attr ( nad , 0 , - 1 , \"type\" , \"valid\" ) ; <S2SV_StartBug> if ( attr >= 0 ) { <S2SV_EndBug> xhash_put ( in -> states , pstrdup ( xhash_pool ( in -> states ) , rkey ) , ( void * ) conn_VALID ) ; log_write ( in -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>incoming<S2SV_blank>route<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>now<S2SV_blank>valid%s%s\" , in -> fd -> fd , in -> ip , in -> port , rkey , ( in -> s -> flags & SX_SSL_WRAPPER ) ? \",<S2SV_blank>TLS<S2SV_blank>negotiated\" : \"\" , in -> s -> compressed ? \",<S2SV_blank>ZLIB<S2SV_blank>compression<S2SV_blank>enabled\" : \"\" ) ; valid = 1 ; } else { log_write ( in -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>incoming<S2SV_blank>route<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>now<S2SV_blank>invalid\" , in -> fd -> fd , in -> ip , in -> port , rkey ) ; valid = 0 ; } free ( rkey ) ; nad_free ( nad ) ; -- out -> verify ; nad = nad_new ( ) ; ns = nad_add_namespace ( nad , uri_DIALBACK , \"db\" ) ; nad_append_elem ( nad , ns , \"result\" , 0 ) ; nad_append_attr ( nad , - 1 , \"to\" , from -> domain ) ; nad_append_attr ( nad , - 1 , \"from\" , to -> domain ) ; nad_append_attr ( nad , - 1 , \"type\" , valid ? \"valid\" : \"invalid\" ) ; sx_nad_write ( in -> s , nad ) ; if ( ! valid ) { sx_error ( in -> s , stream_err_INVALID_ID , \"dialback<S2SV_blank>negotiation<S2SV_blank>failed\" ) ; sx_close ( in -> s ) ; } jid_free ( from ) ; jid_free ( to ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> attr >= 0 && xhash_get ( in -> states , rkey ) == ( void * ) conn_INPROGRESS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_write_data ( SCSIRequest * req ) { SCSIDiskReq * r = DO_UPCAST ( SCSIDiskReq , req , req ) ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; uint32_t n ; assert ( r -> req . aiocb == NULL ) ; if ( r -> req . cmd . mode != SCSI_XFER_TO_DEV ) { DPRINTF ( \"Data<S2SV_blank>transfer<S2SV_blank>direction<S2SV_blank>invalid\\\\n\" ) ; scsi_write_complete ( r , - EINVAL ) ; return ; } <S2SV_StartBug> n = r -> iov . iov_len / 512 ; <S2SV_EndBug> if ( n ) { if ( s -> tray_open ) { scsi_write_complete ( r , - ENOMEDIUM ) ; } <S2SV_StartBug> qemu_iovec_init_external ( & r -> qiov , & r -> iov , 1 ) ; <S2SV_EndBug> bdrv_acct_start ( s -> bs , & r -> acct , n * BDRV_SECTOR_SIZE , BDRV_ACCT_WRITE ) ; r -> req . aiocb = bdrv_aio_writev ( s -> bs , r -> sector , & r -> qiov , n , scsi_write_complete , r ) ; if ( r -> req . aiocb == NULL ) { scsi_write_complete ( r , - ENOMEM ) ; } } else { scsi_write_complete ( r , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = r -> qiov . size <S2SV_ModEnd> / 512 ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> bdrv_acct_start ( s\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18885\n\n```\nCWE-476 int btrfs_init_dev_replace ( struct btrfs_fs_info * fs_info ) { struct btrfs_key key ; struct btrfs_root * dev_root = fs_info -> dev_root ; struct btrfs_dev_replace * dev_replace = & fs_info -> dev_replace ; struct extent_buffer * eb ; int slot ; int ret = 0 ; struct btrfs_path * path = NULL ; int item_size ; struct btrfs_dev_replace_item * ptr ; u64 src_devid ; path = btrfs_alloc_path ( ) ; if ( ! path ) { ret = - ENOMEM ; goto out ; } key . objectid = 0 ; key . type = BTRFS_DEV_REPLACE_KEY ; key . offset = 0 ; ret = btrfs_search_slot ( NULL , dev_root , & key , path , 0 , 0 ) ; if ( ret ) { no_valid_dev_replace_entry_found : ret = 0 ; dev_replace -> replace_state = BTRFS_DEV_REPLACE_ITEM_STATE_NEVER_STARTED ; dev_replace -> cont_reading_from_srcdev_mode = BTRFS_DEV_REPLACE_ITEM_CONT_READING_FROM_SRCDEV_MODE_ALWAYS ; dev_replace -> time_started = 0 ; dev_replace -> time_stopped = 0 ; atomic64_set ( & dev_replace -> num_write_errors , 0 ) ; atomic64_set ( & dev_replace -> num_uncorrectable_read_errors , 0 ) ; dev_replace -> cursor_left = 0 ; dev_replace -> committed_cursor_left = 0 ; dev_replace -> cursor_left_last_write_of_item = 0 ; dev_replace -> cursor_right = 0 ; dev_replace -> srcdev = NULL ; dev_replace -> tgtdev = NULL ; dev_replace -> is_valid = 0 ; dev_replace -> item_needs_writeback = 0 ; goto out ; } slot = path -> slots [ 0 ] ; eb = path -> nodes [ 0 ] ; item_size = btrfs_item_size_nr ( eb , slot ) ; ptr = btrfs_item_ptr ( eb , slot , struct btrfs_dev_replace_item ) ; if ( item_size != sizeof ( struct btrfs_dev_replace_item ) ) { btrfs_warn ( fs_info , \"dev_replace<S2SV_blank>entry<S2SV_blank>found<S2SV_blank>has<S2SV_blank>unexpected<S2SV_blank>size,<S2SV_blank>ignore<S2SV_blank>entry\" ) ; goto no_valid_dev_replace_entry_found ; } src_devid = btrfs_dev_replace_src_devid ( eb , ptr ) ; dev_replace -> cont_reading_from_srcdev_mode = btrfs_dev_replace_cont_reading_from_srcdev_mode ( eb , ptr ) ; dev_replace -> replace_state = btrfs_dev_replace_replace_state ( eb , ptr ) ; dev_replace -> time_started = btrfs_dev_replace_time_started ( eb , ptr ) ; dev_replace -> time_stopped = btrfs_dev_replace_time_stopped ( eb , ptr ) ; atomic64_set ( & dev_replace -> num_write_errors , btrfs_dev_replace_num_write_errors ( eb , ptr ) ) ; atomic64_set ( & dev_replace -> num_uncorrectable_read_errors , btrfs_dev_replace_num_uncorrectable_read_errors ( eb , ptr ) ) ; dev_replace -> cursor_left = btrfs_dev_replace_cursor_left ( eb , ptr ) ; dev_replace -> committed_cursor_left = dev_replace -> cursor_left ; dev_replace -> cursor_left_last_write_of_item = dev_replace -> cursor_left ; dev_replace -> cursor_right = btrfs_dev_replace_cursor_right ( eb , ptr ) ; dev_replace -> is_valid = 1 ; dev_replace -> item_needs_writeback = 0 ; switch ( dev_replace -> replace_state ) { case BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED : case BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED : case BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED : dev_replace -> srcdev = NULL ; dev_replace -> tgtdev = NULL ; break ; case BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED : case BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED : dev_replace -> srcdev = btrfs_find_device ( fs_info -> fs_devices , <S2SV_StartBug> src_devid , NULL , NULL ) ; <S2SV_EndBug> dev_replace -> tgtdev = btrfs_find_device ( fs_info -> fs_devices , BTRFS_DEV_REPLACE_DEVID , <S2SV_StartBug> NULL , NULL ) ; <S2SV_EndBug> if ( ! dev_replace -> srcdev && ! btrfs_test_opt ( fs_info , DEGRADED ) ) { ret = - EIO ; btrfs_warn ( fs_info , \"cannot<S2SV_blank>mount<S2SV_blank>because<S2SV_blank>device<S2SV_blank>replace<S2SV_blank>operation<S2SV_blank>is<S2SV_blank>ongoing<S2SV_blank>and\" ) ; btrfs_warn ( fs_info , \"srcdev<S2SV_blank>(devid<S2SV_blank>%llu)<S2SV_blank>is<S2SV_blank>missing,<S2SV_blank>need<S2SV_blank>to<S2SV_blank>run<S2SV_blank>\\'btrfs<S2SV_blank>dev<S2SV_blank>scan\\'?\" , src_devid ) ; } if ( ! dev_replace -> tgtdev && ! btrfs_test_opt ( fs_info , DEGRADED ) ) { ret = - EIO ; btrfs_warn ( fs_info , \"cannot<S2SV_blank>mount<S2SV_blank>because<S2SV_blank>device<S2SV_blank>replace<S2SV_blank>operation<S2SV_blank>is<S2SV_blank>ongoing<S2SV_blank>and\" ) ; btrfs_warn ( fs_info , \"tgtdev<S2SV_blank>(devid<S2SV_blank>%llu)<S2SV_blank>is<S2SV_blank>missing,<S2SV_blank>need<S2SV_blank>to<S2SV_blank>run<S2SV_blank>\\'btrfs<S2SV_blank>dev<S2SV_blank>scan\\'?\" , BTRFS_DEV_REPLACE_DEVID ) ; } if ( dev_replace -> tgtdev ) { if ( dev_replace -> srcdev ) { dev_replace -> tgtdev -> total_bytes = dev_replace -> srcdev -> total_bytes ; dev_replace -> tgtdev -> disk_total_bytes = dev_replace -> srcdev -> disk_total_bytes ; dev_replace -> tgtdev -> commit_total_bytes = dev_replace -> srcdev -> commit_total_bytes ; dev_replace -> tgtdev -> bytes_used = dev_replace -> srcdev -> bytes_used ; dev_replace -> tgtdev -> commit_bytes_used = dev_replace -> srcdev -> commit_bytes_used ; } set_bit ( BTRFS_DEV_STATE_REPLACE_TGT , & dev_replace -> tgtdev -> dev_state ) ; WARN_ON ( fs_info -> fs_devices -> rw_devices == 0 ) ; dev_replace -> tgtdev -> io_width = fs_info -> sectorsize ; dev_replace -> tgtdev -> io_align = fs_info -> sectorsize ; dev_replace -> tgtdev -> sector_size = fs_info -> sectorsize ; dev_replace -> tgtdev -> fs_info = fs_info ; set_bit ( BTRFS_DEV_STATE_IN_FS_METADATA , & dev_replace -> tgtdev -> dev_state ) ; } break ; } out : btrfs_free_path ( path ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL , NULL , true <S2SV_ModStart> NULL , NULL , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0204\n\n```\nCWE-310 int ssl3_get_key_exchange ( SSL * s ) { # ifndef OPENSSL_NO_RSA unsigned char * q , md_buf [ EVP_MAX_MD_SIZE * 2 ] ; # endif EVP_MD_CTX md_ctx ; unsigned char * param , * p ; int al , j , ok ; long i , param_len , n , alg_k , alg_a ; EVP_PKEY * pkey = NULL ; const EVP_MD * md = NULL ; # ifndef OPENSSL_NO_RSA RSA * rsa = NULL ; # endif # ifndef OPENSSL_NO_DH DH * dh = NULL ; # endif # ifndef OPENSSL_NO_ECDH EC_KEY * ecdh = NULL ; BN_CTX * bn_ctx = NULL ; EC_POINT * srvr_ecpoint = NULL ; int curve_nid = 0 ; int encoded_pt_len = 0 ; # endif EVP_MD_CTX_init ( & md_ctx ) ; n = s -> method -> ssl_get_message ( s , SSL3_ST_CR_KEY_EXCH_A , SSL3_ST_CR_KEY_EXCH_B , - 1 , s -> max_cert_list , & ok ) ; if ( ! ok ) return ( ( int ) n ) ; alg_k = s -> s3 -> tmp . new_cipher -> algorithm_mkey ; if ( s -> s3 -> tmp . message_type != SSL3_MT_SERVER_KEY_EXCHANGE ) { if ( alg_k & ( SSL_kDHE | SSL_kECDHE ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNEXPECTED_MESSAGE ) ; al = SSL_AD_UNEXPECTED_MESSAGE ; goto f_err ; } # ifndef OPENSSL_NO_PSK if ( alg_k & SSL_kPSK ) { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; if ( s -> ctx -> psk_identity_hint ) OPENSSL_free ( s -> ctx -> psk_identity_hint ) ; s -> ctx -> psk_identity_hint = NULL ; } # endif s -> s3 -> tmp . reuse_message = 1 ; return ( 1 ) ; } param = p = ( unsigned char * ) s -> init_msg ; if ( s -> session -> sess_cert != NULL ) { # ifndef OPENSSL_NO_RSA if ( s -> session -> sess_cert -> peer_rsa_tmp != NULL ) { RSA_free ( s -> session -> sess_cert -> peer_rsa_tmp ) ; s -> session -> sess_cert -> peer_rsa_tmp = NULL ; } # endif # ifndef OPENSSL_NO_DH if ( s -> session -> sess_cert -> peer_dh_tmp ) { DH_free ( s -> session -> sess_cert -> peer_dh_tmp ) ; s -> session -> sess_cert -> peer_dh_tmp = NULL ; } # endif # ifndef OPENSSL_NO_ECDH if ( s -> session -> sess_cert -> peer_ecdh_tmp ) { EC_KEY_free ( s -> session -> sess_cert -> peer_ecdh_tmp ) ; s -> session -> sess_cert -> peer_ecdh_tmp = NULL ; } # endif } else { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; } param_len = 0 ; alg_a = s -> s3 -> tmp . new_cipher -> algorithm_auth ; al = SSL_AD_DECODE_ERROR ; # ifndef OPENSSL_NO_PSK if ( alg_k & SSL_kPSK ) { char tmp_id_hint [ PSK_MAX_IDENTITY_LEN + 1 ] ; param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > PSK_MAX_IDENTITY_LEN ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_DATA_LENGTH_TOO_LONG ) ; goto f_err ; } if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH ) ; goto f_err ; } param_len += i ; memcpy ( tmp_id_hint , p , i ) ; memset ( tmp_id_hint + i , 0 , PSK_MAX_IDENTITY_LEN + 1 - i ) ; if ( s -> ctx -> psk_identity_hint != NULL ) OPENSSL_free ( s -> ctx -> psk_identity_hint ) ; s -> ctx -> psk_identity_hint = BUF_strdup ( tmp_id_hint ) ; if ( s -> ctx -> psk_identity_hint == NULL ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto f_err ; } p += i ; n -= param_len ; } else # endif # ifndef OPENSSL_NO_SRP if ( alg_k & SSL_kSRP ) { param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_N_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . N = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_G_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . g = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 1 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 1 ; i = ( unsigned int ) ( p [ 0 ] ) ; p ++ ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_S_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . s = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_B_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . B = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( ! srp_verify_server_param ( s , & al ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_PARAMETERS ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DSA else if ( alg_a & SSL_aDSS ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_DSA_SIGN ] . x509 ) ; # endif } else # endif # ifndef OPENSSL_NO_RSA if ( alg_k & SSL_kRSA ) { <S2SV_StartBug> if ( ( rsa = RSA_new ( ) ) == NULL ) <S2SV_EndBug> { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_MODULUS_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( rsa -> n = BN_bin2bn ( p , i , rsa -> n ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_E_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( rsa -> e = BN_bin2bn ( p , i , rsa -> e ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; else { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_INTERNAL_ERROR ) ; goto err ; } s -> session -> sess_cert -> peer_rsa_tmp = rsa ; rsa = NULL ; } # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DH else if ( alg_k & SSL_kDHE ) { if ( ( dh = DH_new ( ) ) == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_DH_LIB ) ; goto err ; } param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_P_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> p = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_G_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> g = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_PUB_KEY_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> pub_key = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( ! ssl_security ( s , SSL_SECOP_TMP_DH , DH_security_bits ( dh ) , 0 , dh ) ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_DH_KEY_TOO_SMALL ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DSA else if ( alg_a & SSL_aDSS ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_DSA_SIGN ] . x509 ) ; # endif s -> session -> sess_cert -> peer_dh_tmp = dh ; dh = NULL ; } else if ( ( alg_k & SSL_kDHr ) || ( alg_k & SSL_kDHd ) ) { al = SSL_AD_ILLEGAL_PARAMETER ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER ) ; goto f_err ; } # endif # ifndef OPENSSL_NO_ECDH else if ( alg_k & SSL_kECDHE ) { EC_GROUP * ngroup ; const EC_GROUP * group ; if ( ( ecdh = EC_KEY_new ( ) ) == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } param_len = 4 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } if ( ! tls1_check_curve ( s , p , 3 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_WRONG_CURVE ) ; goto f_err ; } if ( ( curve_nid = tls1_ec_curve_id2nid ( * ( p + 2 ) ) ) == 0 ) { al = SSL_AD_INTERNAL_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS ) ; goto f_err ; } ngroup = EC_GROUP_new_by_curve_name ( curve_nid ) ; if ( ngroup == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_EC_LIB ) ; goto err ; } if ( EC_KEY_set_group ( ecdh , ngroup ) == 0 ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_EC_LIB ) ; goto err ; } EC_GROUP_free ( ngroup ) ; group = EC_KEY_get0_group ( ecdh ) ; if ( SSL_C_IS_EXPORT ( s -> s3 -> tmp . new_cipher ) && ( EC_GROUP_get_degree ( group ) > 163 ) ) { al = SSL_AD_EXPORT_RESTRICTION ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER ) ; goto f_err ; } p += 3 ; if ( ( ( srvr_ecpoint = EC_POINT_new ( group ) ) == NULL ) || ( ( bn_ctx = BN_CTX_new ( ) ) == NULL ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } encoded_pt_len = * p ; p += 1 ; if ( ( encoded_pt_len > n - param_len ) || ( EC_POINT_oct2point ( group , srvr_ecpoint , p , encoded_pt_len , bn_ctx ) == 0 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_ECPOINT ) ; goto f_err ; } param_len += encoded_pt_len ; n -= param_len ; p += encoded_pt_len ; if ( 0 ) ; # ifndef OPENSSL_NO_RSA else if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # endif # ifndef OPENSSL_NO_ECDSA else if ( alg_a & SSL_aECDSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_ECC ] . x509 ) ; # endif EC_KEY_set_public_key ( ecdh , srvr_ecpoint ) ; s -> session -> sess_cert -> peer_ecdh_tmp = ecdh ; ecdh = NULL ; BN_CTX_free ( bn_ctx ) ; bn_ctx = NULL ; EC_POINT_free ( srvr_ecpoint ) ; srvr_ecpoint = NULL ; } else if ( alg_k ) { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNEXPECTED_MESSAGE ) ; goto f_err ; } # endif if ( pkey != NULL ) { if ( SSL_USE_SIGALGS ( s ) ) { int rv ; if ( 2 > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } rv = tls12_check_peer_sigalg ( & md , s , p , pkey ) ; if ( rv == - 1 ) goto err ; else if ( rv == 0 ) { goto f_err ; } # ifdef SSL_DEBUG fprintf ( stderr , \"USING<S2SV_blank>TLSv1.2<S2SV_blank>HASH<S2SV_blank>%s\\\\n\" , EVP_MD_name ( md ) ) ; # endif p += 2 ; n -= 2 ; } else md = EVP_sha1 ( ) ; if ( 2 > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; n -= 2 ; j = EVP_PKEY_size ( pkey ) ; if ( ( i != n ) || ( n > j ) || ( n <= 0 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_WRONG_SIGNATURE_LENGTH ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( pkey -> type == EVP_PKEY_RSA && ! SSL_USE_SIGALGS ( s ) ) { int num ; unsigned int size ; j = 0 ; q = md_buf ; for ( num = 2 ; num > 0 ; num -- ) { EVP_MD_CTX_set_flags ( & md_ctx , EVP_MD_CTX_FLAG_NON_FIPS_ALLOW ) ; EVP_DigestInit_ex ( & md_ctx , ( num == 2 ) ? s -> ctx -> md5 : s -> ctx -> sha1 , NULL ) ; EVP_DigestUpdate ( & md_ctx , & ( s -> s3 -> client_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_DigestUpdate ( & md_ctx , & ( s -> s3 -> server_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_DigestUpdate ( & md_ctx , param , param_len ) ; EVP_DigestFinal_ex ( & md_ctx , q , & size ) ; q += size ; j += size ; } i = RSA_verify ( NID_md5_sha1 , md_buf , j , p , n , pkey -> pkey . rsa ) ; if ( i < 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_DECRYPT ) ; goto f_err ; } if ( i == 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SIGNATURE ) ; goto f_err ; } } else # endif { EVP_VerifyInit_ex ( & md_ctx , md , NULL ) ; EVP_VerifyUpdate ( & md_ctx , & ( s -> s3 -> client_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_VerifyUpdate ( & md_ctx , & ( s -> s3 -> server_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_VerifyUpdate ( & md_ctx , param , param_len ) ; if ( EVP_VerifyFinal ( & md_ctx , p , ( int ) n , pkey ) <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SIGNATURE ) ; goto f_err ; } } } else { if ( ! ( alg_a & ( SSL_aNULL | SSL_aSRP ) ) && ! ( alg_k & SSL_kPSK ) ) { if ( ssl3_check_cert_and_algorithm ( s ) ) SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_INTERNAL_ERROR ) ; goto err ; } if ( n != 0 ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_EXTRA_DATA_IN_MESSAGE ) ; goto f_err ; } } EVP_PKEY_free ( pkey ) ; EVP_MD_CTX_cleanup ( & md_ctx ) ; return ( 1 ) ; f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : EVP_PKEY_free ( pkey ) ; # ifndef OPENSSL_NO_RSA if ( rsa != NULL ) RSA_free ( rsa ) ; # endif # ifndef OPENSSL_NO_DH if ( dh != NULL ) DH_free ( dh ) ; # endif # ifndef OPENSSL_NO_ECDH BN_CTX_free ( bn_ctx ) ; EC_POINT_free ( srvr_ecpoint ) ; if ( ecdh != NULL ) EC_KEY_free ( ecdh ) ; # endif EVP_MD_CTX_cleanup ( & md_ctx ) ; return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ! SSL_C_IS_EXPORT ( s -> s3 -> tmp . new_cipher ) ) { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_SSL3_GET_SERVER_CERTIFICATE , SSL_R_UNEXPECTED_MESSAGE ) ; goto f_err ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2347\n\n```\nCWE-190 static int decode_level3_header ( LHAFileHeader * * header , LHAInputStream * stream ) { unsigned int header_len ; if ( lha_decode_uint16 ( & RAW_DATA ( header , 0 ) ) != 4 ) { return 0 ; } if ( ! extend_raw_data ( header , stream , LEVEL_3_HEADER_LEN - RAW_DATA_LEN ( header ) ) ) { return 0 ; } header_len = lha_decode_uint32 ( & RAW_DATA ( header , 24 ) ) ; <S2SV_StartBug> if ( header_len > LEVEL_3_MAX_HEADER_LEN ) { <S2SV_EndBug> return 0 ; } if ( ! extend_raw_data ( header , stream , header_len - RAW_DATA_LEN ( header ) ) ) { return 0 ; } memcpy ( ( * header ) -> compress_method , & RAW_DATA ( header , 2 ) , 5 ) ; ( * header ) -> compress_method [ 5 ] = '\\\\0' ; ( * header ) -> compressed_length = lha_decode_uint32 ( & RAW_DATA ( header , 7 ) ) ; ( * header ) -> length = lha_decode_uint32 ( & RAW_DATA ( header , 11 ) ) ; ( * header ) -> timestamp = lha_decode_uint32 ( & RAW_DATA ( header , 15 ) ) ; ( * header ) -> crc = lha_decode_uint16 ( & RAW_DATA ( header , 21 ) ) ; ( * header ) -> os_type = RAW_DATA ( header , 23 ) ; if ( ! decode_extended_headers ( header , 28 ) ) { return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> header_len > LEVEL_3_MAX_HEADER_LEN || header_len < RAW_DATA_LEN ( header )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8970\n\n```\nCWE-476 static void skcipher_release ( void * private ) { <S2SV_StartBug> crypto_free_skcipher ( private ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> private ) { struct skcipher_tfm * tfm = private ; crypto_free_skcipher ( tfm -> skcipher ) ; kfree ( tfm <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void restore_context ( VP9_COMP * cpi , int mi_row , int mi_col , <S2SV_EndBug> ENTROPY_CONTEXT a [ 16 * MAX_MB_PLANE ] , ENTROPY_CONTEXT l [ 16 * MAX_MB_PLANE ] , PARTITION_CONTEXT sa [ 8 ] , PARTITION_CONTEXT sl [ 8 ] , BLOCK_SIZE bsize ) { <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; int p ; const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup [ bsize ] ; const int num_4x4_blocks_high = num_4x4_blocks_high_lookup [ bsize ] ; int mi_width = num_8x8_blocks_wide_lookup [ bsize ] ; int mi_height = num_8x8_blocks_high_lookup [ bsize ] ; for ( p = 0 ; p < MAX_MB_PLANE ; p ++ ) { <S2SV_StartBug> vpx_memcpy ( <S2SV_EndBug> xd -> above_context [ p ] + ( ( mi_col * 2 ) >> xd -> plane [ p ] . subsampling_x ) , a + num_4x4_blocks_wide * p , ( sizeof ( ENTROPY_CONTEXT ) * num_4x4_blocks_wide ) >> xd -> plane [ p ] . subsampling_x ) ; <S2SV_StartBug> vpx_memcpy ( <S2SV_EndBug> xd -> left_context [ p ] + ( ( mi_row & MI_MASK ) * 2 >> xd -> plane [ p ] . subsampling_y ) , l + num_4x4_blocks_high * p , ( sizeof ( ENTROPY_CONTEXT ) * num_4x4_blocks_high ) >> xd -> plane [ p ] . subsampling_y ) ; } <S2SV_StartBug> vpx_memcpy ( xd -> above_seg_context + mi_col , sa , <S2SV_EndBug> sizeof ( * xd -> above_seg_context ) * mi_width ) ; <S2SV_StartBug> vpx_memcpy ( xd -> left_seg_context + ( mi_row & MI_MASK ) , sl , <S2SV_EndBug> sizeof ( xd -> left_seg_context [ 0 ] ) * mi_height ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void restore_context ( MACROBLOCK * const x <S2SV_ModEnd> , int mi_row <S2SV_ModStart> bsize ) { <S2SV_ModEnd> MACROBLOCKD * const <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( xd -> <S2SV_ModStart> subsampling_x ) ; memcpy <S2SV_ModEnd> ( xd -> <S2SV_ModStart> ) ; } memcpy <S2SV_ModEnd> ( xd -> <S2SV_ModStart> mi_width ) ; memcpy <S2SV_ModEnd> ( xd ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4565\n\n```\nCWE-189 static void tcp_illinois_info ( struct sock * sk , u32 ext , struct sk_buff * skb ) { const struct illinois * ca = inet_csk_ca ( sk ) ; if ( ext & ( 1 << ( INET_DIAG_VEGASINFO - 1 ) ) ) { struct tcpvegas_info info = { . tcpv_enabled = 1 , . tcpv_rttcnt = ca -> cnt_rtt , . tcpv_minrtt = ca -> base_rtt , } ; <S2SV_StartBug> u64 t = ca -> sum_rtt ; <S2SV_EndBug> <S2SV_StartBug> do_div ( t , ca -> cnt_rtt ) ; <S2SV_EndBug> <S2SV_StartBug> info . tcpv_rtt = t ; <S2SV_EndBug> nla_put ( skb , INET_DIAG_VEGASINFO , sizeof ( info ) , & info ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , } ; if ( info . tcpv_rttcnt > 0 ) { <S2SV_ModStart> ( t , info . tcpv_rttcnt <S2SV_ModEnd> ) ; info <S2SV_ModStart> = t ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12898\n\n```\nCWE-125 void nfsreq_print_noaddr ( netdissect_options * ndo , register const u_char * bp , u_int length , register const u_char * bp2 ) { register const struct sunrpc_msg * rp ; register const uint32_t * dp ; nfs_type type ; int v3 ; uint32_t proc ; uint32_t access_flags ; struct nfsv3_sattr sa3 ; ND_PRINT ( ( ndo , \"%d\" , length ) ) ; nfserr = 0 ; rp = ( const struct sunrpc_msg * ) bp ; if ( ! xid_map_enter ( ndo , rp , bp2 ) ) goto trunc ; v3 = ( EXTRACT_32BITS ( & rp -> rm_call . cb_vers ) == NFS_VER3 ) ; proc = EXTRACT_32BITS ( & rp -> rm_call . cb_proc ) ; if ( ! v3 && proc < NFS_NPROCS ) proc = nfsv3_procid [ proc ] ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( nfsproc_str , \"proc-%u\" , proc ) ) ) ; switch ( proc ) { case NFSPROC_GETATTR : case NFSPROC_SETATTR : case NFSPROC_READLINK : case NFSPROC_FSSTAT : case NFSPROC_FSINFO : case NFSPROC_PATHCONF : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && parsefh ( ndo , dp , v3 ) != NULL ) return ; break ; case NFSPROC_LOOKUP : case NFSPROC_CREATE : case NFSPROC_MKDIR : case NFSPROC_REMOVE : case NFSPROC_RMDIR : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && parsefhn ( ndo , dp , v3 ) != NULL ) return ; break ; case NFSPROC_ACCESS : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefh ( ndo , dp , v3 ) ) != NULL ) { ND_TCHECK ( dp [ 0 ] ) ; access_flags = EXTRACT_32BITS ( & dp [ 0 ] ) ; if ( access_flags & ~ NFSV3ACCESS_FULL ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%04x\" , access_flags ) ) ; } else if ( ( access_flags & NFSV3ACCESS_FULL ) == NFSV3ACCESS_FULL ) { ND_PRINT ( ( ndo , \"<S2SV_blank>NFS_ACCESS_FULL\" ) ) ; } else { char separator = '<S2SV_blank>' ; if ( access_flags & NFSV3ACCESS_READ ) { ND_PRINT ( ( ndo , \"<S2SV_blank>NFS_ACCESS_READ\" ) ) ; separator = '|' ; } if ( access_flags & NFSV3ACCESS_LOOKUP ) { ND_PRINT ( ( ndo , \"%cNFS_ACCESS_LOOKUP\" , separator ) ) ; separator = '|' ; } if ( access_flags & NFSV3ACCESS_MODIFY ) { ND_PRINT ( ( ndo , \"%cNFS_ACCESS_MODIFY\" , separator ) ) ; separator = '|' ; } if ( access_flags & NFSV3ACCESS_EXTEND ) { ND_PRINT ( ( ndo , \"%cNFS_ACCESS_EXTEND\" , separator ) ) ; separator = '|' ; } if ( access_flags & NFSV3ACCESS_DELETE ) { ND_PRINT ( ( ndo , \"%cNFS_ACCESS_DELETE\" , separator ) ) ; separator = '|' ; } if ( access_flags & NFSV3ACCESS_EXECUTE ) ND_PRINT ( ( ndo , \"%cNFS_ACCESS_EXECUTE\" , separator ) ) ; } return ; } break ; case NFSPROC_READ : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefh ( ndo , dp , v3 ) ) != NULL ) { if ( v3 ) { ND_TCHECK ( dp [ 2 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%\" PRIu64 , EXTRACT_32BITS ( & dp [ 2 ] ) , EXTRACT_64BITS ( & dp [ 0 ] ) ) ) ; } else { ND_TCHECK ( dp [ 1 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp [ 1 ] ) , EXTRACT_32BITS ( & dp [ 0 ] ) ) ) ; } return ; } break ; case NFSPROC_WRITE : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefh ( ndo , dp , v3 ) ) != NULL ) { if ( v3 ) { <S2SV_StartBug> ND_TCHECK ( dp [ 2 ] ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>(%u)<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%\" PRIu64 , EXTRACT_32BITS ( & dp [ 4 ] ) , EXTRACT_32BITS ( & dp [ 2 ] ) , EXTRACT_64BITS ( & dp [ 0 ] ) ) ) ; if ( ndo -> ndo_vflag ) { <S2SV_StartBug> dp += 3 ; <S2SV_EndBug> ND_TCHECK ( dp [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank><%s>\" , tok2str ( nfsv3_writemodes , NULL , EXTRACT_32BITS ( dp ) ) ) ) ; } } else { ND_TCHECK ( dp [ 3 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>(%u)<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%u<S2SV_blank>(%u)\" , EXTRACT_32BITS ( & dp [ 3 ] ) , EXTRACT_32BITS ( & dp [ 2 ] ) , EXTRACT_32BITS ( & dp [ 1 ] ) , EXTRACT_32BITS ( & dp [ 0 ] ) ) ) ; } return ; } break ; case NFSPROC_SYMLINK : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefhn ( ndo , dp , v3 ) ) != NULL ) { ND_PRINT ( ( ndo , \"<S2SV_blank>->\" ) ) ; if ( v3 && ( dp = parse_sattr3 ( ndo , dp , & sa3 ) ) == NULL ) break ; if ( parsefn ( ndo , dp ) == NULL ) break ; if ( v3 && ndo -> ndo_vflag ) print_sattr3 ( ndo , & sa3 , ndo -> ndo_vflag ) ; return ; } break ; case NFSPROC_MKNOD : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefhn ( ndo , dp , v3 ) ) != NULL ) { ND_TCHECK ( * dp ) ; type = ( nfs_type ) EXTRACT_32BITS ( dp ) ; dp ++ ; if ( ( dp = parse_sattr3 ( ndo , dp , & sa3 ) ) == NULL ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( type2str , \"unk-ft<S2SV_blank>%d\" , type ) ) ) ; if ( ndo -> ndo_vflag && ( type == NFCHR || type == NFBLK ) ) { ND_TCHECK ( dp [ 1 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u/%u\" , EXTRACT_32BITS ( & dp [ 0 ] ) , EXTRACT_32BITS ( & dp [ 1 ] ) ) ) ; dp += 2 ; } if ( ndo -> ndo_vflag ) print_sattr3 ( ndo , & sa3 , ndo -> ndo_vflag ) ; return ; } break ; case NFSPROC_RENAME : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefhn ( ndo , dp , v3 ) ) != NULL ) { ND_PRINT ( ( ndo , \"<S2SV_blank>->\" ) ) ; if ( parsefhn ( ndo , dp , v3 ) != NULL ) return ; } break ; case NFSPROC_LINK : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefh ( ndo , dp , v3 ) ) != NULL ) { ND_PRINT ( ( ndo , \"<S2SV_blank>->\" ) ) ; if ( parsefhn ( ndo , dp , v3 ) != NULL ) return ; } break ; case NFSPROC_READDIR : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefh ( ndo , dp , v3 ) ) != NULL ) { if ( v3 ) { ND_TCHECK ( dp [ 4 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%\" PRId64 , EXTRACT_32BITS ( & dp [ 4 ] ) , EXTRACT_64BITS ( & dp [ 0 ] ) ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>verf<S2SV_blank>%08x%08x\" , dp [ 2 ] , dp [ 3 ] ) ) ; } else { ND_TCHECK ( dp [ 1 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%d\" , EXTRACT_32BITS ( & dp [ 1 ] ) , EXTRACT_32BITS ( & dp [ 0 ] ) ) ) ; } return ; } break ; case NFSPROC_READDIRPLUS : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefh ( ndo , dp , v3 ) ) != NULL ) { ND_TCHECK ( dp [ 4 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%\" PRId64 , EXTRACT_32BITS ( & dp [ 4 ] ) , EXTRACT_64BITS ( & dp [ 0 ] ) ) ) ; if ( ndo -> ndo_vflag ) { ND_TCHECK ( dp [ 5 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>max<S2SV_blank>%u<S2SV_blank>verf<S2SV_blank>%08x%08x\" , EXTRACT_32BITS ( & dp [ 5 ] ) , dp [ 2 ] , dp [ 3 ] ) ) ; } return ; } break ; case NFSPROC_COMMIT : if ( ( dp = parsereq ( ndo , rp , length ) ) != NULL && ( dp = parsefh ( ndo , dp , v3 ) ) != NULL ) { ND_TCHECK ( dp [ 2 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%\" PRIu64 , EXTRACT_32BITS ( & dp [ 2 ] ) , EXTRACT_64BITS ( & dp [ 0 ] ) ) ) ; return ; } break ; default : return ; } trunc : if ( ! nfserr ) ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( dp [ 4 <S2SV_ModEnd> ] ) ; <S2SV_ModStart> ndo_vflag ) { ND_PRINT ( ( ndo , \"<S2SV_blank><%s>\" , tok2str ( nfsv3_writemodes , NULL , EXTRACT_32BITS ( & dp [ 3 ] <S2SV_ModEnd> ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 u_int null_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int length = h -> len ; u_int caplen = h -> caplen ; u_int family ; if ( caplen < NULL_HDRLEN ) { ND_PRINT ( ( ndo , \"[|null]\" ) ) ; return ( NULL_HDRLEN ) ; } memcpy ( ( char * ) & family , ( const char * ) p , sizeof ( family ) ) ; if ( ( family & 0xFFFF0000 ) != 0 ) family = SWAPLONG ( family ) ; if ( ndo -> ndo_eflag ) null_hdr_print ( ndo , family , length ) ; length -= NULL_HDRLEN ; caplen -= NULL_HDRLEN ; p += NULL_HDRLEN ; switch ( family ) { case BSD_AFNUM_INET : ip_print ( ndo , p , length ) ; break ; case BSD_AFNUM_INET6_BSD : case BSD_AFNUM_INET6_FREEBSD : case BSD_AFNUM_INET6_DARWIN : ip6_print ( ndo , p , length ) ; break ; case BSD_AFNUM_ISO : <S2SV_StartBug> isoclns_print ( ndo , p , length , caplen ) ; <S2SV_EndBug> break ; case BSD_AFNUM_APPLETALK : atalk_print ( ndo , p , length ) ; break ; case BSD_AFNUM_IPX : ipx_print ( ndo , p , length ) ; break ; default : if ( ! ndo -> ndo_eflag ) null_hdr_print ( ndo , family , length + NULL_HDRLEN ) ; if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , caplen ) ; } return ( NULL_HDRLEN ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: nan\n\n```\nCWE-000 void xmlParseElement ( xmlParserCtxtPtr ctxt ) { const xmlChar * name ; const xmlChar * prefix = NULL ; const xmlChar * URI = NULL ; xmlParserNodeInfo node_info ; int line , tlen ; xmlNodePtr ret ; int nsNr = ctxt -> nsNr ; if ( ( ( unsigned int ) ctxt -> nameNr > xmlParserMaxDepth ) && ( ( ctxt -> options & XML_PARSE_HUGE ) == 0 ) ) { xmlFatalErrMsgInt ( ctxt , XML_ERR_INTERNAL_ERROR , \"Excessive<S2SV_blank>depth<S2SV_blank>in<S2SV_blank>document:<S2SV_blank>%d<S2SV_blank>use<S2SV_blank>XML_PARSE_HUGE<S2SV_blank>option\\\\n\" , xmlParserMaxDepth ) ; ctxt -> instate = XML_PARSER_EOF ; return ; } if ( ctxt -> record_info ) { node_info . begin_pos = ctxt -> input -> consumed + ( CUR_PTR - ctxt -> input -> base ) ; node_info . begin_line = ctxt -> input -> line ; } if ( ctxt -> spaceNr == 0 ) spacePush ( ctxt , - 1 ) ; else if ( * ctxt -> space == - 2 ) spacePush ( ctxt , - 1 ) ; else spacePush ( ctxt , * ctxt -> space ) ; line = ctxt -> input -> line ; # ifdef LIBXML_SAX1_ENABLED if ( ctxt -> sax2 ) # endif name = xmlParseStartTag2 ( ctxt , & prefix , & URI , & tlen ) ; # ifdef LIBXML_SAX1_ENABLED else name = xmlParseStartTag ( ctxt ) ; # endif <S2SV_StartBug> if ( name == NULL ) { <S2SV_EndBug> spacePop ( ctxt ) ; return ; } namePush ( ctxt , name ) ; ret = ctxt -> node ; # ifdef LIBXML_VALID_ENABLED if ( ctxt -> validate && ctxt -> wellFormed && ctxt -> myDoc && ctxt -> node && ( ctxt -> node == ctxt -> myDoc -> children ) ) ctxt -> valid &= xmlValidateRoot ( & ctxt -> vctxt , ctxt -> myDoc ) ; # endif if ( ( RAW == '/' ) && ( NXT ( 1 ) == '>' ) ) { SKIP ( 2 ) ; if ( ctxt -> sax2 ) { if ( ( ctxt -> sax != NULL ) && ( ctxt -> sax -> endElementNs != NULL ) && ( ! ctxt -> disableSAX ) ) ctxt -> sax -> endElementNs ( ctxt -> userData , name , prefix , URI ) ; # ifdef LIBXML_SAX1_ENABLED } else { if ( ( ctxt -> sax != NULL ) && ( ctxt -> sax -> endElement != NULL ) && ( ! ctxt -> disableSAX ) ) ctxt -> sax -> endElement ( ctxt -> userData , name ) ; # endif } namePop ( ctxt ) ; spacePop ( ctxt ) ; if ( nsNr != ctxt -> nsNr ) nsPop ( ctxt , ctxt -> nsNr - nsNr ) ; if ( ret != NULL && ctxt -> record_info ) { node_info . end_pos = ctxt -> input -> consumed + ( CUR_PTR - ctxt -> input -> base ) ; node_info . end_line = ctxt -> input -> line ; node_info . node = ret ; xmlParserAddNodeInfo ( ctxt , & node_info ) ; } return ; } if ( RAW == '>' ) { NEXT1 ; } else { xmlFatalErrMsgStrIntStr ( ctxt , XML_ERR_GT_REQUIRED , \"Couldn\\'t<S2SV_blank>find<S2SV_blank>end<S2SV_blank>of<S2SV_blank>Start<S2SV_blank>Tag<S2SV_blank>%s<S2SV_blank>line<S2SV_blank>%d\\\\n\" , name , line , NULL ) ; nodePop ( ctxt ) ; namePop ( ctxt ) ; spacePop ( ctxt ) ; if ( nsNr != ctxt -> nsNr ) nsPop ( ctxt , ctxt -> nsNr - nsNr ) ; if ( ret != NULL && ctxt -> record_info ) { node_info . end_pos = ctxt -> input -> consumed + ( CUR_PTR - ctxt -> input -> base ) ; node_info . end_line = ctxt -> input -> line ; node_info . node = ret ; xmlParserAddNodeInfo ( ctxt , & node_info ) ; } return ; } xmlParseContent ( ctxt ) ; if ( ! IS_BYTE_CHAR ( RAW ) ) { xmlFatalErrMsgStrIntStr ( ctxt , XML_ERR_TAG_NOT_FINISHED , \"Premature<S2SV_blank>end<S2SV_blank>of<S2SV_blank>data<S2SV_blank>in<S2SV_blank>tag<S2SV_blank>%s<S2SV_blank>line<S2SV_blank>%d\\\\n\" , name , line , NULL ) ; nodePop ( ctxt ) ; namePop ( ctxt ) ; spacePop ( ctxt ) ; if ( nsNr != ctxt -> nsNr ) nsPop ( ctxt , ctxt -> nsNr - nsNr ) ; return ; } if ( ctxt -> sax2 ) { xmlParseEndTag2 ( ctxt , prefix , URI , line , ctxt -> nsNr - nsNr , tlen ) ; namePop ( ctxt ) ; } # ifdef LIBXML_SAX1_ENABLED else xmlParseEndTag1 ( ctxt , line ) ; # endif if ( ret != NULL && ctxt -> record_info ) { node_info . end_pos = ctxt -> input -> consumed + ( CUR_PTR - ctxt -> input -> base ) ; node_info . end_line = ctxt -> input -> line ; node_info . node = ret ; xmlParserAddNodeInfo ( ctxt , & node_info ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif if ( ctxt -> instate == XML_PARSER_EOF ) return ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2234\n\n```\nCWE-119 static int key_notify_policy_flush ( const struct km_event * c ) { struct sk_buff * skb_out ; struct sadb_msg * hdr ; skb_out = alloc_skb ( sizeof ( struct sadb_msg ) + 16 , GFP_ATOMIC ) ; if ( ! skb_out ) return - ENOBUFS ; hdr = ( struct sadb_msg * ) skb_put ( skb_out , sizeof ( struct sadb_msg ) ) ; hdr -> sadb_msg_type = SADB_X_SPDFLUSH ; hdr -> sadb_msg_seq = c -> seq ; hdr -> sadb_msg_pid = c -> portid ; hdr -> sadb_msg_version = PF_KEY_V2 ; hdr -> sadb_msg_errno = ( uint8_t ) 0 ; hdr -> sadb_msg_satype = SADB_SATYPE_UNSPEC ; hdr -> sadb_msg_len = ( sizeof ( struct sadb_msg ) / sizeof ( uint64_t ) ) ; <S2SV_StartBug> pfkey_broadcast ( skb_out , GFP_ATOMIC , BROADCAST_ALL , NULL , c -> net ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; hdr -> sadb_msg_reserved = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><infile><S2SV_blank><outfile>\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7163\n\n```\nCWE-125 opj_pi_iterator_t * opj_pi_create_decode ( opj_image_t * p_image , opj_cp_t * p_cp , OPJ_UINT32 p_tile_no ) { OPJ_UINT32 pino ; OPJ_UINT32 compno , resno ; OPJ_UINT32 * l_tmp_data ; OPJ_UINT32 * * l_tmp_ptr ; OPJ_UINT32 l_max_res ; OPJ_UINT32 l_max_prec ; OPJ_INT32 l_tx0 , l_tx1 , l_ty0 , l_ty1 ; OPJ_UINT32 l_dx_min , l_dy_min ; OPJ_UINT32 l_bound ; OPJ_UINT32 l_step_p , l_step_c , l_step_r , l_step_l ; OPJ_UINT32 l_data_stride ; opj_pi_iterator_t * l_pi = 00 ; opj_tcp_t * l_tcp = 00 ; const opj_tccp_t * l_tccp = 00 ; opj_pi_comp_t * l_current_comp = 00 ; opj_image_comp_t * l_img_comp = 00 ; opj_pi_iterator_t * l_current_pi = 00 ; OPJ_UINT32 * l_encoding_value_ptr = 00 ; assert ( p_cp != 00 ) ; assert ( p_image != 00 ) ; assert ( p_tile_no < p_cp -> tw * p_cp -> th ) ; l_tcp = & p_cp -> tcps [ p_tile_no ] ; l_bound = l_tcp -> numpocs + 1 ; l_data_stride = 4 * OPJ_J2K_MAXRLVLS ; l_tmp_data = ( OPJ_UINT32 * ) opj_malloc ( l_data_stride * p_image -> numcomps * sizeof ( OPJ_UINT32 ) ) ; if ( ! l_tmp_data ) { return 00 ; } l_tmp_ptr = ( OPJ_UINT32 * * ) opj_malloc ( p_image -> numcomps * sizeof ( OPJ_UINT32 * ) ) ; if ( ! l_tmp_ptr ) { opj_free ( l_tmp_data ) ; return 00 ; } l_pi = opj_pi_create ( p_image , p_cp , p_tile_no ) ; if ( ! l_pi ) { opj_free ( l_tmp_data ) ; opj_free ( l_tmp_ptr ) ; return 00 ; } l_encoding_value_ptr = l_tmp_data ; for ( compno = 0 ; compno < p_image -> numcomps ; ++ compno ) { l_tmp_ptr [ compno ] = l_encoding_value_ptr ; l_encoding_value_ptr += l_data_stride ; } opj_get_all_encoding_parameters ( p_image , p_cp , p_tile_no , & l_tx0 , & l_tx1 , & l_ty0 , & l_ty1 , & l_dx_min , & l_dy_min , & l_max_prec , & l_max_res , l_tmp_ptr ) ; l_step_p = 1 ; l_step_c = l_max_prec * l_step_p ; l_step_r = p_image -> numcomps * l_step_c ; l_step_l = l_max_res * l_step_r ; l_current_pi = l_pi ; l_current_pi -> include = 00 ; if ( l_step_l <= ( SIZE_MAX / ( l_tcp -> numlayers + 1U ) ) ) { <S2SV_StartBug> l_current_pi -> include = ( OPJ_INT16 * ) opj_calloc ( ( l_tcp -> numlayers + 1 ) * l_step_l , sizeof ( OPJ_INT16 ) ) ; <S2SV_EndBug> } if ( ! l_current_pi -> include ) { opj_free ( l_tmp_data ) ; opj_free ( l_tmp_ptr ) ; opj_pi_destroy ( l_pi , l_bound ) ; return 00 ; } l_current_comp = l_current_pi -> comps ; l_img_comp = p_image -> comps ; l_tccp = l_tcp -> tccps ; l_current_pi -> tx0 = l_tx0 ; l_current_pi -> ty0 = l_ty0 ; l_current_pi -> tx1 = l_tx1 ; l_current_pi -> ty1 = l_ty1 ; l_current_pi -> step_p = l_step_p ; l_current_pi -> step_c = l_step_c ; l_current_pi -> step_r = l_step_r ; l_current_pi -> step_l = l_step_l ; for ( compno = 0 ; compno < l_current_pi -> numcomps ; ++ compno ) { opj_pi_resolution_t * l_res = l_current_comp -> resolutions ; l_encoding_value_ptr = l_tmp_ptr [ compno ] ; l_current_comp -> dx = l_img_comp -> dx ; l_current_comp -> dy = l_img_comp -> dy ; for ( resno = 0 ; resno < l_current_comp -> numresolutions ; resno ++ ) { l_res -> pdx = * ( l_encoding_value_ptr ++ ) ; l_res -> pdy = * ( l_encoding_value_ptr ++ ) ; l_res -> pw = * ( l_encoding_value_ptr ++ ) ; l_res -> ph = * ( l_encoding_value_ptr ++ ) ; ++ l_res ; } ++ l_current_comp ; ++ l_img_comp ; ++ l_tccp ; } ++ l_current_pi ; for ( pino = 1 ; pino < l_bound ; ++ pino ) { l_current_comp = l_current_pi -> comps ; l_img_comp = p_image -> comps ; l_tccp = l_tcp -> tccps ; l_current_pi -> tx0 = l_tx0 ; l_current_pi -> ty0 = l_ty0 ; l_current_pi -> tx1 = l_tx1 ; l_current_pi -> ty1 = l_ty1 ; l_current_pi -> step_p = l_step_p ; l_current_pi -> step_c = l_step_c ; l_current_pi -> step_r = l_step_r ; l_current_pi -> step_l = l_step_l ; for ( compno = 0 ; compno < l_current_pi -> numcomps ; ++ compno ) { opj_pi_resolution_t * l_res = l_current_comp -> resolutions ; l_encoding_value_ptr = l_tmp_ptr [ compno ] ; l_current_comp -> dx = l_img_comp -> dx ; l_current_comp -> dy = l_img_comp -> dy ; for ( resno = 0 ; resno < l_current_comp -> numresolutions ; resno ++ ) { l_res -> pdx = * ( l_encoding_value_ptr ++ ) ; l_res -> pdy = * ( l_encoding_value_ptr ++ ) ; l_res -> pw = * ( l_encoding_value_ptr ++ ) ; l_res -> ph = * ( l_encoding_value_ptr ++ ) ; ++ l_res ; } ++ l_current_comp ; ++ l_img_comp ; ++ l_tccp ; } l_current_pi -> include = ( l_current_pi - 1 ) -> include ; ++ l_current_pi ; } opj_free ( l_tmp_data ) ; l_tmp_data = 00 ; opj_free ( l_tmp_ptr ) ; l_tmp_ptr = 00 ; if ( l_tcp -> POC ) { opj_pi_update_decode_poc ( l_pi , l_tcp , l_max_prec , l_max_res ) ; } else { opj_pi_update_decode_not_poc ( l_pi , l_tcp , l_max_prec , l_max_res ) ; } return l_pi ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> opj_calloc ( ( size_t ) ( <S2SV_ModStart> -> numlayers + 1U <S2SV_ModEnd> ) * l_step_l\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 void pci_lintr_assert ( struct pci_vdev * dev ) { <S2SV_StartBug> assert ( dev -> lintr . pin > 0 ) ; <S2SV_EndBug> pthread_mutex_lock ( & dev -> lintr . lock ) ; if ( dev -> lintr . state == IDLE ) { if ( pci_lintr_permitted ( dev ) ) { dev -> lintr . state = ASSERTED ; pci_irq_assert ( dev ) ; } else dev -> lintr . state = PENDING ; } pthread_mutex_unlock ( & dev -> lintr . lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) { if <S2SV_ModEnd> ( dev -> <S2SV_ModStart> lintr . pin <= 0 ) { pr_warn ( \"%s:<S2SV_blank>Invalid<S2SV_blank>intr<S2SV_blank>pin<S2SV_blank>on<S2SV_blank>dev<S2SV_blank>[%s]\\\\n\" , __func__ , dev -> name ) ; return ; } <S2SV_ModEnd> pthread_mutex_lock ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13137\n\n```\nCWE-399 static Image * ReadPSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define BoundingBox \"BoundingBox:\" # define BeginDocument \"BeginDocument:\" # define BeginXMPPacket \"<?xpacket<S2SV_blank>begin=\" # define EndXMPPacket \"<?xpacket<S2SV_blank>end=\" # define ICCProfile \"BeginICCProfile:\" # define CMYKCustomColor \"CMYKCustomColor:\" # define CMYKProcessColor \"CMYKProcessColor:\" # define DocumentMedia \"DocumentMedia:\" # define DocumentCustomColors \"DocumentCustomColors:\" # define DocumentProcessColors \"DocumentProcessColors:\" # define EndDocument \"EndDocument:\" # define HiResBoundingBox \"HiResBoundingBox:\" # define ImageData \"ImageData:\" # define PageBoundingBox \"PageBoundingBox:\" # define LanguageLevel \"LanguageLevel:\" # define PageMedia \"PageMedia:\" # define Pages \"Pages:\" # define PhotoshopProfile \"BeginPhotoshop:\" # define PostscriptLevel \"!PS-\" # define RenderPostscriptText \"<S2SV_blank><S2SV_blank>Rendering<S2SV_blank>Postscript...<S2SV_blank><S2SV_blank>\" # define SpotColor \"+<S2SV_blank>\" char command [ MaxTextExtent ] , * density , filename [ MaxTextExtent ] , geometry [ MaxTextExtent ] , input_filename [ MaxTextExtent ] , message [ MaxTextExtent ] , * options , postscript_filename [ MaxTextExtent ] ; const char * option ; const DelegateInfo * delegate_info ; GeometryInfo geometry_info ; Image * image , * next , * postscript_image ; ImageInfo * read_info ; int c , file ; MagickBooleanType cmyk , fitPage , skip , status ; MagickStatusType flags ; PointInfo delta , resolution ; RectangleInfo page ; register char * p ; register ssize_t i ; SegmentInfo bounds , hires_bounds ; short int hex_digits [ 256 ] ; size_t length , priority ; ssize_t count ; StringInfo * profile ; unsigned long columns , extent , language_level , pages , rows , scene , spotcolor ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } status = AcquireUniqueSymbolicLink ( image_info -> filename , input_filename ) ; if ( status == MagickFalse ) { ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( hex_digits , 0 , sizeof ( hex_digits ) ) ; hex_digits [ ( int ) '0' ] = 0 ; hex_digits [ ( int ) '1' ] = 1 ; hex_digits [ ( int ) '2' ] = 2 ; hex_digits [ ( int ) '3' ] = 3 ; hex_digits [ ( int ) '4' ] = 4 ; hex_digits [ ( int ) '5' ] = 5 ; hex_digits [ ( int ) '6' ] = 6 ; hex_digits [ ( int ) '7' ] = 7 ; hex_digits [ ( int ) '8' ] = 8 ; hex_digits [ ( int ) '9' ] = 9 ; hex_digits [ ( int ) 'a' ] = 10 ; hex_digits [ ( int ) 'b' ] = 11 ; hex_digits [ ( int ) 'c' ] = 12 ; hex_digits [ ( int ) 'd' ] = 13 ; hex_digits [ ( int ) 'e' ] = 14 ; hex_digits [ ( int ) 'f' ] = 15 ; hex_digits [ ( int ) 'A' ] = 10 ; hex_digits [ ( int ) 'B' ] = 11 ; hex_digits [ ( int ) 'C' ] = 12 ; hex_digits [ ( int ) 'D' ] = 13 ; hex_digits [ ( int ) 'E' ] = 14 ; hex_digits [ ( int ) 'F' ] = 15 ; delta . x = DefaultResolution ; delta . y = DefaultResolution ; if ( ( image -> x_resolution == 0.0 ) || ( image -> y_resolution == 0.0 ) ) { flags = ParseGeometry ( PSDensityGeometry , & geometry_info ) ; image -> x_resolution = geometry_info . rho ; image -> y_resolution = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> y_resolution = image -> x_resolution ; } if ( image_info -> density != ( char * ) NULL ) { flags = ParseGeometry ( image_info -> density , & geometry_info ) ; image -> x_resolution = geometry_info . rho ; image -> y_resolution = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> y_resolution = image -> x_resolution ; } ( void ) ParseAbsoluteGeometry ( PSPageGeometry , & page ) ; if ( image_info -> page != ( char * ) NULL ) ( void ) ParseAbsoluteGeometry ( image_info -> page , & page ) ; resolution . x = image -> x_resolution ; resolution . y = image -> y_resolution ; page . width = ( size_t ) ceil ( ( double ) ( page . width * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * resolution . y / delta . y ) - 0.5 ) ; ( void ) memset ( & bounds , 0 , sizeof ( bounds ) ) ; ( void ) memset ( command , 0 , sizeof ( command ) ) ; cmyk = image_info -> colorspace == CMYKColorspace ? MagickTrue : MagickFalse ; ( void ) memset ( & hires_bounds , 0 , sizeof ( hires_bounds ) ) ; priority = 0 ; columns = 0 ; rows = 0 ; extent = 0 ; spotcolor = 0 ; language_level = 1 ; skip = MagickFalse ; pages = ( ~ 0UL ) ; p = command ; for ( c = ReadBlobByte ( image ) ; c != EOF ; c = ReadBlobByte ( image ) ) { * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MaxTextExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( BeginDocument , command , strlen ( BeginDocument ) ) == 0 ) skip = MagickTrue ; if ( LocaleNCompare ( EndDocument , command , strlen ( EndDocument ) ) == 0 ) skip = MagickFalse ; if ( skip != MagickFalse ) continue ; if ( LocaleNCompare ( PostscriptLevel , command , strlen ( PostscriptLevel ) ) == 0 ) { ( void ) SetImageProperty ( image , \"ps:Level\" , command + 4 ) ; if ( GlobExpression ( command , \"*EPSF-*\" , MagickTrue ) != MagickFalse ) pages = 1 ; } if ( LocaleNCompare ( LanguageLevel , command , strlen ( LanguageLevel ) ) == 0 ) ( void ) sscanf ( command , LanguageLevel \"<S2SV_blank>%lu\" , & language_level ) ; if ( LocaleNCompare ( Pages , command , strlen ( Pages ) ) == 0 ) ( void ) sscanf ( command , Pages \"<S2SV_blank>%lu\" , & pages ) ; if ( LocaleNCompare ( ImageData , command , strlen ( ImageData ) ) == 0 ) ( void ) sscanf ( command , ImageData \"<S2SV_blank>%lu<S2SV_blank>%lu\" , & columns , & rows ) ; length = strlen ( DocumentProcessColors ) ; if ( LocaleNCompare ( DocumentProcessColors , command , length ) == 0 ) { if ( ( GlobExpression ( command , \"*Cyan*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Magenta*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Yellow*\" , MagickTrue ) != MagickFalse ) ) cmyk = MagickTrue ; } if ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) cmyk = MagickTrue ; if ( LocaleNCompare ( CMYKProcessColor , command , strlen ( CMYKProcessColor ) ) == 0 ) cmyk = MagickTrue ; length = strlen ( DocumentCustomColors ) ; if ( ( LocaleNCompare ( DocumentCustomColors , command , length ) == 0 ) || ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) || ( LocaleNCompare ( SpotColor , command , strlen ( SpotColor ) ) == 0 ) ) { char property [ MaxTextExtent ] , * value ; register char * p ; ( void ) FormatLocaleString ( property , MaxTextExtent , \"ps:SpotColor-%.20g\" , ( double ) ( spotcolor ++ ) ) ; for ( p = command ; * p != '\\\\0' ; p ++ ) if ( isspace ( ( int ) ( unsigned char ) * p ) != 0 ) break ; value = ConstantString ( p ) ; ( void ) SubstituteString ( & value , \"(\" , \"\" ) ; ( void ) SubstituteString ( & value , \")\" , \"\" ) ; ( void ) StripString ( value ) ; if ( * value != '\\\\0' ) ( void ) SetImageProperty ( image , property , value ) ; value = DestroyString ( value ) ; continue ; } if ( image_info -> page != ( char * ) NULL ) continue ; count = 0 ; i = 0 ; if ( LocaleNCompare ( BoundingBox , command , strlen ( BoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , BoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 2 ; } if ( LocaleNCompare ( DocumentMedia , command , strlen ( DocumentMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , DocumentMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( HiResBoundingBox , command , strlen ( HiResBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , HiResBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 3 ; } if ( LocaleNCompare ( PageBoundingBox , command , strlen ( PageBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( PageMedia , command , strlen ( PageMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( ( count != 4 ) || ( i < ( ssize_t ) priority ) ) continue ; if ( ( fabs ( bounds . x2 - bounds . x1 ) <= fabs ( hires_bounds . x2 - hires_bounds . x1 ) ) || ( fabs ( bounds . y2 - bounds . y1 ) <= fabs ( hires_bounds . y2 - hires_bounds . y1 ) ) ) if ( i == ( ssize_t ) priority ) continue ; hires_bounds = bounds ; priority = ( size_t ) i ; } if ( ( fabs ( hires_bounds . x2 - hires_bounds . x1 ) >= MagickEpsilon ) && ( fabs ( hires_bounds . y2 - hires_bounds . y1 ) >= MagickEpsilon ) ) { ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%gx%g%+.15g%+.15g\" , hires_bounds . x2 - hires_bounds . x1 , hires_bounds . y2 - hires_bounds . y1 , hires_bounds . x1 , hires_bounds . y1 ) ; ( void ) SetImageProperty ( image , \"ps:HiResBoundingBox\" , geometry ) ; page . width = ( size_t ) ceil ( ( double ) ( ( hires_bounds . x2 - hires_bounds . x1 ) * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( ( hires_bounds . y2 - hires_bounds . y1 ) * resolution . y / delta . y ) - 0.5 ) ; } fitPage = MagickFalse ; option = GetImageOption ( image_info , \"eps:fit-page\" ) ; if ( option != ( char * ) NULL ) { char * geometry ; MagickStatusType flags ; geometry = GetPageGeometry ( option ) ; flags = ParseMetaGeometry ( geometry , & page . x , & page . y , & page . width , & page . height ) ; if ( flags == NoValue ) { ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , OptionError , <S2SV_StartBug> \"InvalidGeometry\" , \"`%s\\'\" , option ) ; <S2SV_EndBug> image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } page . width = ( size_t ) ceil ( ( double ) ( page . width * image -> x_resolution / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * image -> y_resolution / delta . y ) - 0.5 ) ; geometry = DestroyString ( geometry ) ; fitPage = MagickTrue ; } if ( IssRGBCompatibleColorspace ( image_info -> colorspace ) != MagickFalse ) cmyk = MagickFalse ; file = AcquireUniqueFileResource ( postscript_filename ) ; if ( file == - 1 ) { ThrowFileException ( & image -> exception , FileOpenError , \"UnableToOpenFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( command , \"/setpagedevice<S2SV_blank>{pop}<S2SV_blank>bind<S2SV_blank>1<S2SV_blank>index<S2SV_blank>where<S2SV_blank>{\" \"dup<S2SV_blank>wcheck<S2SV_blank>{3<S2SV_blank>1<S2SV_blank>roll<S2SV_blank>put}<S2SV_blank>{pop<S2SV_blank>def}<S2SV_blank>ifelse}<S2SV_blank>{def}<S2SV_blank>ifelse\\\\n\" \"<</UseCIEColor<S2SV_blank>true>>setpagedevice\\\\n\" , MaxTextExtent ) ; count = write ( file , command , ( unsigned int ) strlen ( command ) ) ; if ( image_info -> page == ( char * ) NULL ) { char translate_geometry [ MaxTextExtent ] ; ( void ) FormatLocaleString ( translate_geometry , MaxTextExtent , \"%g<S2SV_blank>%g<S2SV_blank>translate\\\\n\" , - hires_bounds . x1 , - hires_bounds . y1 ) ; count = write ( file , translate_geometry , ( unsigned int ) strlen ( translate_geometry ) ) ; } file = close ( file ) - 1 ; if ( image_info -> monochrome != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:mono\" , ( char * ) NULL , exception ) ; else if ( cmyk != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:cmyk\" , ( char * ) NULL , exception ) ; else delegate_info = GetDelegateInfo ( \"ps:alpha\" , ( char * ) NULL , exception ) ; if ( delegate_info == ( const DelegateInfo * ) NULL ) { ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } density = AcquireString ( \"\" ) ; options = AcquireString ( \"\" ) ; ( void ) FormatLocaleString ( density , MaxTextExtent , \"%gx%g\" , resolution . x , resolution . y ) ; ( void ) FormatLocaleString ( options , MaxTextExtent , \"-g%.20gx%.20g<S2SV_blank>\" , ( double ) page . width , ( double ) page . height ) ; read_info = CloneImageInfo ( image_info ) ; * read_info -> magick = '\\\\0' ; if ( read_info -> number_scenes != 0 ) { char pages [ MaxTextExtent ] ; ( void ) FormatLocaleString ( pages , MaxTextExtent , \"-dFirstPage=%.20g<S2SV_blank>\" \"-dLastPage=%.20g<S2SV_blank>\" , ( double ) read_info -> scene + 1 , ( double ) ( read_info -> scene + read_info -> number_scenes ) ) ; ( void ) ConcatenateMagickString ( options , pages , MaxTextExtent ) ; read_info -> number_scenes = 0 ; if ( read_info -> scenes != ( char * ) NULL ) * read_info -> scenes = '\\\\0' ; } if ( * image_info -> magick == 'E' ) { option = GetImageOption ( image_info , \"eps:use-cropbox\" ) ; if ( ( option == ( const char * ) NULL ) || ( IsStringTrue ( option ) != MagickFalse ) ) ( void ) ConcatenateMagickString ( options , \"-dEPSCrop<S2SV_blank>\" , MaxTextExtent ) ; if ( fitPage != MagickFalse ) ( void ) ConcatenateMagickString ( options , \"-dEPSFitPage<S2SV_blank>\" , MaxTextExtent ) ; } ( void ) CopyMagickString ( filename , read_info -> filename , MaxTextExtent ) ; ( void ) AcquireUniqueFilename ( filename ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; ( void ) ConcatenateMagickString ( filename , \"%d\" , MaxTextExtent ) ; ( void ) FormatLocaleString ( command , MaxTextExtent , GetDelegateCommands ( delegate_info ) , read_info -> antialias != MagickFalse ? 4 : 1 , read_info -> antialias != MagickFalse ? 4 : 1 , density , options , filename , postscript_filename , input_filename ) ; options = DestroyString ( options ) ; density = DestroyString ( density ) ; * message = '\\\\0' ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; ( void ) InterpretImageFilename ( image_info , image , filename , 1 , read_info -> filename ) ; if ( ( status == MagickFalse ) || ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) ) { ( void ) ConcatenateMagickString ( command , \"<S2SV_blank>-c<S2SV_blank>showpage\" , MaxTextExtent ) ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; } ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; ( void ) RelinquishUniqueFileResource ( input_filename ) ; postscript_image = ( Image * ) NULL ; if ( status == MagickFalse ) for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; } else for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; read_info -> blob = NULL ; read_info -> length = 0 ; next = ReadImage ( read_info , exception ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; if ( next == ( Image * ) NULL ) break ; AppendImageToList ( & postscript_image , next ) ; } ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( postscript_image == ( Image * ) NULL ) { if ( * message != '\\\\0' ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , DelegateError , \"PostscriptDelegateFailed\" , \"`%s\\'\" , message ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( LocaleCompare ( postscript_image -> magick , \"BMP\" ) == 0 ) { Image * cmyk_image ; cmyk_image = ConsolidateCMYKImages ( postscript_image , exception ) ; if ( cmyk_image != ( Image * ) NULL ) { postscript_image = DestroyImageList ( postscript_image ) ; postscript_image = cmyk_image ; } } ( void ) SeekBlob ( image , 0 , SEEK_SET ) ; for ( c = ReadBlobByte ( image ) ; c != EOF ; c = ReadBlobByte ( image ) ) { * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MaxTextExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( BeginDocument , command , strlen ( BeginDocument ) ) == 0 ) skip = MagickTrue ; if ( LocaleNCompare ( EndDocument , command , strlen ( EndDocument ) ) == 0 ) skip = MagickFalse ; if ( skip != MagickFalse ) continue ; if ( LocaleNCompare ( PostscriptLevel , command , strlen ( PostscriptLevel ) ) == 0 ) { ( void ) SetImageProperty ( image , \"ps:Level\" , command + 4 ) ; if ( GlobExpression ( command , \"*EPSF-*\" , MagickTrue ) != MagickFalse ) pages = 1 ; } if ( LocaleNCompare ( LanguageLevel , command , strlen ( LanguageLevel ) ) == 0 ) ( void ) sscanf ( command , LanguageLevel \"<S2SV_blank>%lu\" , & language_level ) ; if ( LocaleNCompare ( Pages , command , strlen ( Pages ) ) == 0 ) ( void ) sscanf ( command , Pages \"<S2SV_blank>%lu\" , & pages ) ; if ( LocaleNCompare ( ImageData , command , strlen ( ImageData ) ) == 0 ) ( void ) sscanf ( command , ImageData \"<S2SV_blank>%lu<S2SV_blank>%lu\" , & columns , & rows ) ; if ( LocaleNCompare ( ICCProfile , command , strlen ( ICCProfile ) ) == 0 ) { unsigned char * datum ; profile = AcquireStringInfo ( MaxTextExtent ) ; datum = GetStringInfoDatum ( profile ) ; for ( i = 0 ; ( c = ProfileInteger ( image , hex_digits ) ) != EOF ; i ++ ) { if ( i >= ( ssize_t ) GetStringInfoLength ( profile ) ) { SetStringInfoLength ( profile , ( size_t ) i << 1 ) ; datum = GetStringInfoDatum ( profile ) ; } datum [ i ] = ( unsigned char ) c ; } SetStringInfoLength ( profile , ( size_t ) i + 1 ) ; ( void ) SetImageProfile ( image , \"icc\" , profile ) ; profile = DestroyStringInfo ( profile ) ; continue ; } if ( LocaleNCompare ( PhotoshopProfile , command , strlen ( PhotoshopProfile ) ) == 0 ) { unsigned char * p ; count = ( ssize_t ) sscanf ( command , PhotoshopProfile \"<S2SV_blank>%lu\" , & extent ) ; if ( count != 1 ) continue ; length = extent ; if ( ( MagickSizeType ) length > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; if ( profile != ( StringInfo * ) NULL ) { p = GetStringInfoDatum ( profile ) ; for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) * p ++ = ( unsigned char ) ProfileInteger ( image , hex_digits ) ; ( void ) SetImageProfile ( image , \"8bim\" , profile ) ; profile = DestroyStringInfo ( profile ) ; } continue ; } if ( LocaleNCompare ( BeginXMPPacket , command , strlen ( BeginXMPPacket ) ) == 0 ) { register size_t i ; p = command ; profile = StringToStringInfo ( command ) ; for ( i = GetStringInfoLength ( profile ) - 1 ; c != EOF ; i ++ ) { SetStringInfoLength ( profile , ( size_t ) ( i + 1 ) ) ; c = ReadBlobByte ( image ) ; GetStringInfoDatum ( profile ) [ i ] = ( unsigned char ) c ; * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MaxTextExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( EndXMPPacket , command , strlen ( EndXMPPacket ) ) == 0 ) break ; } SetStringInfoLength ( profile , ( size_t ) i ) ; ( void ) SetImageProfile ( image , \"xmp\" , profile ) ; profile = DestroyStringInfo ( profile ) ; continue ; } } ( void ) CloseBlob ( image ) ; if ( image_info -> number_scenes != 0 ) { Image * clone_image ; register ssize_t i ; for ( i = 0 ; i < ( ssize_t ) image_info -> scene ; i ++ ) { clone_image = CloneImage ( postscript_image , 1 , 1 , MagickTrue , exception ) ; if ( clone_image != ( Image * ) NULL ) PrependImageToList ( & postscript_image , clone_image ) ; } } do { ( void ) CopyMagickString ( postscript_image -> filename , filename , MaxTextExtent ) ; ( void ) CopyMagickString ( postscript_image -> magick , image -> magick , MaxTextExtent ) ; if ( columns != 0 ) postscript_image -> magick_columns = columns ; if ( rows != 0 ) postscript_image -> magick_rows = rows ; postscript_image -> page = page ; ( void ) CloneImageProfiles ( postscript_image , image ) ; ( void ) CloneImageProperties ( postscript_image , image ) ; next = SyncNextImageInList ( postscript_image ) ; if ( next != ( Image * ) NULL ) postscript_image = next ; } while ( next != ( Image * ) NULL ) ; image = DestroyImageList ( image ) ; scene = 0 ; for ( next = GetFirstImageInList ( postscript_image ) ; next != ( Image * ) NULL ; ) { next -> scene = scene ++ ; next = GetNextImageInList ( next ) ; } return ( GetFirstImageInList ( postscript_image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"`%s\\'\" , option ) ; geometry = DestroyString ( geometry\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13013\n\n```\nCWE-125 static void atmarp_print ( netdissect_options * ndo , const u_char * bp , u_int length , u_int caplen ) { const struct atmarp_pkthdr * ap ; u_short pro , hrd , op ; ap = ( const struct atmarp_pkthdr * ) bp ; ND_TCHECK ( * ap ) ; hrd = ATMHRD ( ap ) ; pro = ATMPRO ( ap ) ; op = ATMOP ( ap ) ; if ( ! ND_TTEST2 ( * aar_tpa ( ap ) , ATMTPROTO_LEN ( ap ) ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) ap , length ) ; return ; } if ( ! ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"ARP,<S2SV_blank>\" ) ) ; } if ( ( pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL ) || ATMSPROTO_LEN ( ap ) != 4 || ATMTPROTO_LEN ( ap ) != 4 || ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"%s,<S2SV_blank>%s<S2SV_blank>(len<S2SV_blank>%u/%u)\" , tok2str ( arphrd_values , \"Unknown<S2SV_blank>Hardware<S2SV_blank>(%u)\" , hrd ) , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , pro ) , ATMSPROTO_LEN ( ap ) , ATMTPROTO_LEN ( ap ) ) ) ; if ( ! ndo -> ndo_vflag ) { goto out ; } } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>\" , ndo -> ndo_vflag ? \",<S2SV_blank>\" : \"\" , tok2str ( arpop_values , \"Unknown<S2SV_blank>(%u)\" , op ) ) ) ; switch ( op ) { case ARPOP_REQUEST : <S2SV_StartBug> ND_PRINT ( ( ndo , \"who-has<S2SV_blank>%s\" , ipaddr_string ( ndo , ATMTPA ( ap ) ) ) ) ; <S2SV_EndBug> if ( ATMTHRD_LEN ( ap ) != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(\" ) ) ; atmarp_addr_print ( ndo , ATMTHA ( ap ) , ATMTHRD_LEN ( ap ) , ATMTSA ( ap ) , ATMTSLN ( ap ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"tell<S2SV_blank>%s\" , ipaddr_string ( ndo , ATMSPA ( ap ) ) ) ) ; <S2SV_EndBug> break ; case ARPOP_REPLY : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>is-at<S2SV_blank>\" , ipaddr_string ( ndo , ATMSPA ( ap ) ) ) ) ; <S2SV_EndBug> atmarp_addr_print ( ndo , ATMSHA ( ap ) , ATMSHRD_LEN ( ap ) , ATMSSA ( ap ) , ATMSSLN ( ap ) ) ; break ; case ARPOP_INVREQUEST : ND_PRINT ( ( ndo , \"who-is<S2SV_blank>\" ) ) ; atmarp_addr_print ( ndo , ATMTHA ( ap ) , ATMTHRD_LEN ( ap ) , ATMTSA ( ap ) , ATMTSLN ( ap ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>tell<S2SV_blank>\" ) ) ; atmarp_addr_print ( ndo , ATMSHA ( ap ) , ATMSHRD_LEN ( ap ) , ATMSSA ( ap ) , ATMSSLN ( ap ) ) ; break ; case ARPOP_INVREPLY : atmarp_addr_print ( ndo , ATMSHA ( ap ) , ATMSHRD_LEN ( ap ) , ATMSSA ( ap ) , ATMSSLN ( ap ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"at<S2SV_blank>%s\" , ipaddr_string ( ndo , ATMSPA ( ap ) ) ) ) ; <S2SV_EndBug> break ; case ARPOP_NAK : <S2SV_StartBug> ND_PRINT ( ( ndo , \"for<S2SV_blank>%s\" , ipaddr_string ( ndo , ATMSPA ( ap ) ) ) ) ; <S2SV_EndBug> break ; default : ND_DEFAULTPRINT ( ( const u_char * ) ap , caplen ) ; return ; } out : ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"who-has<S2SV_blank>\" ) ) ; atmarp_tpaddr_print ( ndo , ap , pro <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( ndo , \"<S2SV_blank>tell<S2SV_blank>\" ) ) ; atmarp_spaddr_print ( ndo , ap , pro <S2SV_ModEnd> ) ; break <S2SV_ModStart> case ARPOP_REPLY : atmarp_spaddr_print ( ndo , ap , pro ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>is-at<S2SV_blank>\" <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( ndo , \"at<S2SV_blank>\" ) ) ; atmarp_spaddr_print ( ndo , ap , pro <S2SV_ModEnd> ) ; break <S2SV_ModStart> ( ndo , \"for<S2SV_blank>\" ) ) ; atmarp_spaddr_print ( ndo , ap , pro <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12895\n\n```\nCWE-125 void icmp_print ( netdissect_options * ndo , const u_char * bp , u_int plen , const u_char * bp2 , int fragmented ) { char * cp ; const struct icmp * dp ; const struct icmp_ext_t * ext_dp ; const struct ip * ip ; const char * str , * fmt ; const struct ip * oip ; const struct udphdr * ouh ; const uint8_t * obj_tptr ; uint32_t raw_label ; const u_char * snapend_save ; const struct icmp_mpls_ext_object_header_t * icmp_mpls_ext_object_header ; u_int hlen , dport , mtu , obj_tlen , obj_class_num , obj_ctype ; char buf [ MAXHOSTNAMELEN + 100 ] ; struct cksum_vec vec [ 1 ] ; dp = ( const struct icmp * ) bp ; ext_dp = ( const struct icmp_ext_t * ) bp ; ip = ( const struct ip * ) bp2 ; str = buf ; ND_TCHECK ( dp -> icmp_code ) ; switch ( dp -> icmp_type ) { case ICMP_ECHO : case ICMP_ECHOREPLY : ND_TCHECK ( dp -> icmp_seq ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"echo<S2SV_blank>%s,<S2SV_blank>id<S2SV_blank>%u,<S2SV_blank>seq<S2SV_blank>%u\" , dp -> icmp_type == ICMP_ECHO ? \"request\" : \"reply\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) ) ; break ; case ICMP_UNREACH : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; switch ( dp -> icmp_code ) { case ICMP_UNREACH_PROTOCOL : ND_TCHECK ( dp -> icmp_ip . ip_p ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , dp -> icmp_ip . ip_p ) ; break ; case ICMP_UNREACH_PORT : ND_TCHECK ( dp -> icmp_ip . ip_p ) ; oip = & dp -> icmp_ip ; hlen = IP_HL ( oip ) * 4 ; ouh = ( const struct udphdr * ) ( ( ( const u_char * ) oip ) + hlen ) ; ND_TCHECK ( ouh -> uh_dport ) ; dport = EXTRACT_16BITS ( & ouh -> uh_dport ) ; switch ( oip -> ip_p ) { case IPPROTO_TCP : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>tcp<S2SV_blank>port<S2SV_blank>%s<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ; break ; case IPPROTO_UDP : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>udp<S2SV_blank>port<S2SV_blank>%s<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , udpport_string ( ndo , dport ) ) ; break ; default : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>port<S2SV_blank>%d<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , oip -> ip_p , dport ) ; break ; } break ; case ICMP_UNREACH_NEEDFRAG : { register const struct mtu_discovery * mp ; mp = ( const struct mtu_discovery * ) ( const u_char * ) & dp -> icmp_void ; mtu = EXTRACT_16BITS ( & mp -> nexthopmtu ) ; if ( mtu ) { ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>unreachable<S2SV_blank>-<S2SV_blank>need<S2SV_blank>to<S2SV_blank>frag<S2SV_blank>(mtu<S2SV_blank>%d)\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , mtu ) ; } else { ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>unreachable<S2SV_blank>-<S2SV_blank>need<S2SV_blank>to<S2SV_blank>frag\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) ) ; } } break ; default : fmt = tok2str ( unreach2str , \"#%d<S2SV_blank>%%s<S2SV_blank>unreachable\" , dp -> icmp_code ) ; ( void ) snprintf ( buf , sizeof ( buf ) , fmt , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) ) ; break ; } break ; case ICMP_REDIRECT : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; fmt = tok2str ( type2str , \"redirect-#%d<S2SV_blank>%%s<S2SV_blank>to<S2SV_blank>net<S2SV_blank>%%s\" , dp -> icmp_code ) ; ( void ) snprintf ( buf , sizeof ( buf ) , fmt , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , ipaddr_string ( ndo , & dp -> icmp_gwaddr ) ) ; break ; case ICMP_ROUTERADVERT : { register const struct ih_rdiscovery * ihp ; register const struct id_rdiscovery * idp ; u_int lifetime , num , size ; ( void ) snprintf ( buf , sizeof ( buf ) , \"router<S2SV_blank>advertisement\" ) ; cp = buf + strlen ( buf ) ; ihp = ( const struct ih_rdiscovery * ) & dp -> icmp_void ; ND_TCHECK ( * ihp ) ; ( void ) strncpy ( cp , \"<S2SV_blank>lifetime<S2SV_blank>\" , sizeof ( buf ) - ( cp - buf ) ) ; cp = buf + strlen ( buf ) ; lifetime = EXTRACT_16BITS ( & ihp -> ird_lifetime ) ; if ( lifetime < 60 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u\" , lifetime ) ; } else if ( lifetime < 60 * 60 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u:%02u\" , lifetime / 60 , lifetime % 60 ) ; } else { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u:%02u:%02u\" , lifetime / 3600 , ( lifetime % 3600 ) / 60 , lifetime % 60 ) ; } cp = buf + strlen ( buf ) ; num = ihp -> ird_addrnum ; ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>%d:\" , num ) ; cp = buf + strlen ( buf ) ; size = ihp -> ird_addrsiz ; if ( size != 2 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>[size<S2SV_blank>%d]\" , size ) ; break ; } idp = ( const struct id_rdiscovery * ) & dp -> icmp_data ; while ( num -- > 0 ) { ND_TCHECK ( * idp ) ; ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>{%s<S2SV_blank>%u}\" , ipaddr_string ( ndo , & idp -> ird_addr ) , EXTRACT_32BITS ( & idp -> ird_pref ) ) ; cp = buf + strlen ( buf ) ; ++ idp ; } } break ; case ICMP_TIMXCEED : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; switch ( dp -> icmp_code ) { case ICMP_TIMXCEED_INTRANS : str = \"time<S2SV_blank>exceeded<S2SV_blank>in-transit\" ; break ; case ICMP_TIMXCEED_REASS : str = \"ip<S2SV_blank>reassembly<S2SV_blank>time<S2SV_blank>exceeded\" ; break ; default : ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>exceeded-#%d\" , dp -> icmp_code ) ; break ; } break ; case ICMP_PARAMPROB : if ( dp -> icmp_code ) ( void ) snprintf ( buf , sizeof ( buf ) , \"parameter<S2SV_blank>problem<S2SV_blank>-<S2SV_blank>code<S2SV_blank>%d\" , dp -> icmp_code ) ; else { ND_TCHECK ( dp -> icmp_pptr ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"parameter<S2SV_blank>problem<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%d\" , dp -> icmp_pptr ) ; } break ; case ICMP_MASKREPLY : ND_TCHECK ( dp -> icmp_mask ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"address<S2SV_blank>mask<S2SV_blank>is<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & dp -> icmp_mask ) ) ; break ; case ICMP_TSTAMP : ND_TCHECK ( dp -> icmp_seq ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>stamp<S2SV_blank>query<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) ) ; break ; case ICMP_TSTAMPREPLY : ND_TCHECK ( dp -> icmp_ttime ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>stamp<S2SV_blank>reply<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u:<S2SV_blank>org<S2SV_blank>%s\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_otime ) ) ) ; ( void ) snprintf ( buf + strlen ( buf ) , sizeof ( buf ) - strlen ( buf ) , \",<S2SV_blank>recv<S2SV_blank>%s\" , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_rtime ) ) ) ; ( void ) snprintf ( buf + strlen ( buf ) , sizeof ( buf ) - strlen ( buf ) , \",<S2SV_blank>xmit<S2SV_blank>%s\" , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_ttime ) ) ) ; break ; default : str = tok2str ( icmp2str , \"type-#%d\" , dp -> icmp_type ) ; break ; } ND_PRINT ( ( ndo , \"ICMP<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , str , plen ) ) ; if ( ndo -> ndo_vflag && ! fragmented ) { uint16_t sum , icmp_sum ; if ( ND_TTEST2 ( * bp , plen ) ) { vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) dp ; vec [ 0 ] . len = plen ; sum = in_cksum ( vec , 1 ) ; if ( sum != 0 ) { icmp_sum = EXTRACT_16BITS ( & dp -> icmp_cksum ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(wrong<S2SV_blank>icmp<S2SV_blank>cksum<S2SV_blank>%x<S2SV_blank>(->%x)!)\" , icmp_sum , in_cksum_shouldbe ( icmp_sum , sum ) ) ) ; } } } if ( ndo -> ndo_vflag >= 1 && ICMP_ERRTYPE ( dp -> icmp_type ) ) { bp += 8 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; ip = ( const struct ip * ) bp ; snapend_save = ndo -> ndo_snapend ; ip_print ( ndo , bp , EXTRACT_16BITS ( & ip -> ip_len ) ) ; ndo -> ndo_snapend = snapend_save ; } if ( ndo -> ndo_vflag >= 1 && plen > ICMP_EXTD_MINLEN && ICMP_MPLS_EXT_TYPE ( dp -> icmp_type ) ) { ND_TCHECK ( * ext_dp ) ; <S2SV_StartBug> if ( ! ext_dp -> icmp_length ) { <S2SV_EndBug> vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) & ext_dp -> icmp_ext_version_res ; vec [ 0 ] . len = plen - ICMP_EXTD_MINLEN ; if ( in_cksum ( vec , 1 ) ) { return ; } } ND_PRINT ( ( ndo , \"\\\\n\\\\tMPLS<S2SV_blank>extension<S2SV_blank>v%u\" , ICMP_MPLS_EXT_EXTRACT_VERSION ( * ( ext_dp -> icmp_ext_version_res ) ) ) ) ; if ( ICMP_MPLS_EXT_EXTRACT_VERSION ( * ( ext_dp -> icmp_ext_version_res ) ) != ICMP_MPLS_EXT_VERSION ) { ND_PRINT ( ( ndo , \"<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" ) ) ; return ; } hlen = plen - ICMP_EXTD_MINLEN ; <S2SV_StartBug> vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) & ext_dp -> icmp_ext_version_res ; <S2SV_EndBug> vec [ 0 ] . len = hlen ; ND_PRINT ( ( ndo , \",<S2SV_blank>checksum<S2SV_blank>0x%04x<S2SV_blank>(%scorrect),<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( ext_dp -> icmp_ext_checksum ) , in_cksum ( vec , 1 ) ? \"in\" : \"\" , hlen ) ) ; <S2SV_StartBug> hlen -= 4 ; <S2SV_EndBug> obj_tptr = ( const uint8_t * ) ext_dp -> icmp_ext_data ; while ( hlen > sizeof ( struct icmp_mpls_ext_object_header_t ) ) { icmp_mpls_ext_object_header = ( const struct icmp_mpls_ext_object_header_t * ) obj_tptr ; ND_TCHECK ( * icmp_mpls_ext_object_header ) ; obj_tlen = EXTRACT_16BITS ( icmp_mpls_ext_object_header -> length ) ; obj_class_num = icmp_mpls_ext_object_header -> class_num ; obj_ctype = icmp_mpls_ext_object_header -> ctype ; obj_tptr += sizeof ( struct icmp_mpls_ext_object_header_t ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Object<S2SV_blank>(%u),<S2SV_blank>Class-Type:<S2SV_blank>%u,<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( icmp_mpls_ext_obj_values , \"unknown\" , obj_class_num ) , obj_class_num , obj_ctype , obj_tlen ) ) ; hlen -= sizeof ( struct icmp_mpls_ext_object_header_t ) ; if ( ( obj_class_num == 0 ) || ( obj_tlen < sizeof ( struct icmp_mpls_ext_object_header_t ) ) ) { return ; } obj_tlen -= sizeof ( struct icmp_mpls_ext_object_header_t ) ; switch ( obj_class_num ) { case 1 : switch ( obj_ctype ) { case 1 : ND_TCHECK2 ( * obj_tptr , 4 ) ; raw_label = EXTRACT_32BITS ( obj_tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>label<S2SV_blank>%u,<S2SV_blank>exp<S2SV_blank>%u\" , MPLS_LABEL ( raw_label ) , MPLS_EXP ( raw_label ) ) ) ; if ( MPLS_STACK ( raw_label ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>[S]\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>ttl<S2SV_blank>%u\" , MPLS_TTL ( raw_label ) ) ) ; break ; default : print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; } break ; case 2 : default : print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( hlen < obj_tlen ) break ; hlen -= obj_tlen ; obj_tptr += obj_tlen ; } } return ; trunc : ND_PRINT ( ( ndo , \"[|icmp]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext_dp -> icmp_length && ND_TTEST2 ( ext_dp -> icmp_ext_version_res , plen - ICMP_EXTD_MINLEN ) <S2SV_ModStart> - ICMP_EXTD_MINLEN ; if ( ND_TTEST2 ( ext_dp -> icmp_ext_version_res , hlen ) ) { <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 void show_object_with_name ( FILE * out , struct object * obj , <S2SV_StartBug> struct strbuf * path , const char * component ) <S2SV_EndBug> { char * name = path_name ( path , component ) ; char * p ; fprintf ( out , \"%s<S2SV_blank>\" , oid_to_hex ( & obj -> oid ) ) ; for ( p = name ; * p && * p != '\\\\n' ; p ++ ) fputc ( * p , out ) ; fputc ( '\\\\n' , out ) ; <S2SV_StartBug> free ( name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name ) { const <S2SV_ModEnd> char * p <S2SV_ModStart> out ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static ssize_t out_write ( struct audio_stream_out * stream , const void * buffer , size_t bytes ) { struct a2dp_stream_out * out = ( struct a2dp_stream_out * ) stream ; int sent ; DEBUG ( \"write<S2SV_blank>%zu<S2SV_blank>bytes<S2SV_blank>(fd<S2SV_blank>%d)\" , bytes , out -> common . audio_fd ) ; pthread_mutex_lock ( & out -> common . lock ) ; if ( out -> common . state == AUDIO_A2DP_STATE_SUSPENDED ) { DEBUG ( \"stream<S2SV_blank>suspended\" ) ; pthread_mutex_unlock ( & out -> common . lock ) ; return - 1 ; } if ( ( out -> common . state == AUDIO_A2DP_STATE_STOPPED ) || ( out -> common . state == AUDIO_A2DP_STATE_STANDBY ) ) { if ( start_audio_datapath ( & out -> common ) < 0 ) { int us_delay = calc_audiotime ( out -> common . cfg , bytes ) ; DEBUG ( \"emulate<S2SV_blank>a2dp<S2SV_blank>write<S2SV_blank>delay<S2SV_blank>(%d<S2SV_blank>us)\" , us_delay ) ; <S2SV_StartBug> usleep ( us_delay ) ; <S2SV_EndBug> pthread_mutex_unlock ( & out -> common . lock ) ; return - 1 ; } } else if ( out -> common . state != AUDIO_A2DP_STATE_STARTED ) { ERROR ( \"stream<S2SV_blank>not<S2SV_blank>in<S2SV_blank>stopped<S2SV_blank>or<S2SV_blank>standby\" ) ; pthread_mutex_unlock ( & out -> common . lock ) ; return - 1 ; } pthread_mutex_unlock ( & out -> common . lock ) ; sent = skt_write ( out -> common . audio_fd , buffer , bytes ) ; if ( sent == - 1 ) { skt_disconnect ( out -> common . audio_fd ) ; out -> common . audio_fd = AUDIO_SKT_DISCONNECTED ; if ( out -> common . state != AUDIO_A2DP_STATE_SUSPENDED ) out -> common . state = AUDIO_A2DP_STATE_STOPPED ; else ERROR ( \"write<S2SV_blank>failed<S2SV_blank>:<S2SV_blank>stream<S2SV_blank>suspended,<S2SV_blank>avoid<S2SV_blank>resetting<S2SV_blank>state\" ) ; } else { const size_t frames = bytes / audio_stream_out_frame_size ( stream ) ; out -> frames_rendered += frames ; out -> frames_presented += frames ; } DEBUG ( \"wrote<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>out<S2SV_blank>of<S2SV_blank>%zu<S2SV_blank>bytes\" , sent , bytes ) ; return sent ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> us_delay ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> usleep ( us_delay )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4470\n\n```\nCWE-264 static inline int ip6_ufo_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int hh_len , int fragheaderlen , int transhdrlen , int mtu , unsigned int flags , struct rt6_info * rt ) { struct sk_buff * skb ; <S2SV_StartBug> int err ; <S2SV_EndBug> if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) { <S2SV_StartBug> struct frag_hdr fhdr ; <S2SV_EndBug> skb = sock_alloc_send_skb ( sk , hh_len + fragheaderlen + transhdrlen + 20 , ( flags & MSG_DONTWAIT ) , & err ) ; if ( skb == NULL ) return err ; skb_reserve ( skb , hh_len ) ; skb_put ( skb , fragheaderlen + transhdrlen ) ; skb_reset_network_header ( skb ) ; skb -> transport_header = skb -> network_header + fragheaderlen ; skb -> protocol = htons ( ETH_P_IPV6 ) ; <S2SV_StartBug> skb -> ip_summed = CHECKSUM_PARTIAL ; <S2SV_EndBug> skb -> csum = 0 ; skb_shinfo ( skb ) -> gso_size = ( mtu - fragheaderlen - sizeof ( struct frag_hdr ) ) & ~ 7 ; skb_shinfo ( skb ) -> gso_type = SKB_GSO_UDP ; ipv6_select_ident ( & fhdr , rt ) ; skb_shinfo ( skb ) -> ip6_frag_id = fhdr . identification ; <S2SV_StartBug> __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; <S2SV_EndBug> } return skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * skb ; struct frag_hdr fhdr ; <S2SV_ModStart> NULL ) { <S2SV_ModEnd> skb = sock_alloc_send_skb <S2SV_ModStart> ; skb -> csum = 0 ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; } else if ( skb_is_gso ( skb ) ) { goto append ; } skb -> <S2SV_ModStart> ip_summed = CHECKSUM_PARTIAL <S2SV_ModEnd> ; skb_shinfo ( <S2SV_ModStart> . identification ; append : <S2SV_ModEnd> return skb_append_datato_frags (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13021\n\n```\nCWE-125 void icmp6_print ( netdissect_options * ndo , const u_char * bp , u_int length , const u_char * bp2 , int fragmented ) { const struct icmp6_hdr * dp ; const struct ip6_hdr * ip ; const struct ip6_hdr * oip ; const struct udphdr * ouh ; int dport ; const u_char * ep ; u_int prot ; dp = ( const struct icmp6_hdr * ) bp ; ip = ( const struct ip6_hdr * ) bp2 ; oip = ( const struct ip6_hdr * ) ( dp + 1 ) ; ep = ndo -> ndo_snapend ; ND_TCHECK ( dp -> icmp6_cksum ) ; if ( ndo -> ndo_vflag && ! fragmented ) { uint16_t sum , udp_sum ; if ( ND_TTEST2 ( bp [ 0 ] , length ) ) { udp_sum = EXTRACT_16BITS ( & dp -> icmp6_cksum ) ; sum = icmp6_cksum ( ndo , ip , dp , length ) ; if ( sum != 0 ) ND_PRINT ( ( ndo , \"[bad<S2SV_blank>icmp6<S2SV_blank>cksum<S2SV_blank>0x%04x<S2SV_blank>-><S2SV_blank>0x%04x!]<S2SV_blank>\" , udp_sum , in_cksum_shouldbe ( udp_sum , sum ) ) ) ; else ND_PRINT ( ( ndo , \"[icmp6<S2SV_blank>sum<S2SV_blank>ok]<S2SV_blank>\" ) ) ; } } ND_PRINT ( ( ndo , \"ICMP6,<S2SV_blank>%s\" , tok2str ( icmp6_type_values , \"unknown<S2SV_blank>icmp6<S2SV_blank>type<S2SV_blank>(%u)\" , dp -> icmp6_type ) ) ) ; if ( ndo -> ndo_vflag && ( dp -> icmp6_type == ND_ROUTER_SOLICIT || dp -> icmp6_type == ND_ROUTER_ADVERT || dp -> icmp6_type == ND_NEIGHBOR_ADVERT || dp -> icmp6_type == ND_NEIGHBOR_SOLICIT || dp -> icmp6_type == ND_REDIRECT || dp -> icmp6_type == ICMP6_HADISCOV_REPLY || dp -> icmp6_type == ICMP6_MOBILEPREFIX_ADVERT ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; switch ( dp -> icmp6_type ) { case ICMP6_DST_UNREACH : ND_TCHECK ( oip -> ip6_dst ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , tok2str ( icmp6_dst_unreach_code_values , \"unknown<S2SV_blank>unreach<S2SV_blank>code<S2SV_blank>(%u)\" , dp -> icmp6_code ) ) ) ; switch ( dp -> icmp6_code ) { case ICMP6_DST_UNREACH_NOROUTE : case ICMP6_DST_UNREACH_ADMIN : case ICMP6_DST_UNREACH_ADDR : ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) ) ) ; break ; case ICMP6_DST_UNREACH_BEYONDSCOPE : ND_PRINT ( ( ndo , \"<S2SV_blank>%s,<S2SV_blank>source<S2SV_blank>address<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , ip6addr_string ( ndo , & oip -> ip6_src ) ) ) ; break ; case ICMP6_DST_UNREACH_NOPORT : if ( ( ouh = get_upperlayer ( ndo , ( const u_char * ) oip , & prot ) ) == NULL ) goto trunc ; dport = EXTRACT_16BITS ( & ouh -> uh_dport ) ; switch ( prot ) { case IPPROTO_TCP : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>tcp<S2SV_blank>port<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , tcpport_string ( ndo , dport ) ) ) ; break ; case IPPROTO_UDP : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>udp<S2SV_blank>port<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , udpport_string ( ndo , dport ) ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>port<S2SV_blank>%d<S2SV_blank>unreachable\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , oip -> ip6_nxt , dport ) ) ; break ; } break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , bp , \"\\\\n\\\\t\" , length ) ; return ; } break ; } break ; case ICMP6_PACKET_TOO_BIG : ND_TCHECK ( dp -> icmp6_mtu ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>mtu<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_mtu ) ) ) ; break ; case ICMP6_TIME_EXCEEDED : ND_TCHECK ( oip -> ip6_dst ) ; switch ( dp -> icmp6_code ) { case ICMP6_TIME_EXCEED_TRANSIT : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) ) ) ; break ; case ICMP6_TIME_EXCEED_REASSEMBLY : ND_PRINT ( ( ndo , \"<S2SV_blank>(reassembly)\" ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>unknown<S2SV_blank>code<S2SV_blank>(%u)\" , dp -> icmp6_code ) ) ; break ; } break ; case ICMP6_PARAM_PROB : ND_TCHECK ( oip -> ip6_dst ) ; switch ( dp -> icmp6_code ) { case ICMP6_PARAMPROB_HEADER : ND_PRINT ( ( ndo , \",<S2SV_blank>erroneous<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; case ICMP6_PARAMPROB_NEXTHEADER : ND_PRINT ( ( ndo , \",<S2SV_blank>next<S2SV_blank>header<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; case ICMP6_PARAMPROB_OPTION : ND_PRINT ( ( ndo , \",<S2SV_blank>option<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>code-#%d\" , dp -> icmp6_code ) ) ; break ; } break ; case ICMP6_ECHO_REQUEST : case ICMP6_ECHO_REPLY : ND_TCHECK ( dp -> icmp6_seq ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_16BITS ( & dp -> icmp6_seq ) ) ) ; break ; case ICMP6_MEMBERSHIP_QUERY : if ( length == MLD_MINLEN ) { mld6_print ( ndo , ( const u_char * ) dp ) ; } else if ( length >= MLDV2_MINLEN ) { ND_PRINT ( ( ndo , \"<S2SV_blank>v2\" ) ) ; mldv2_query_print ( ndo , ( const u_char * ) dp , length ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>unknown-version<S2SV_blank>(len<S2SV_blank>%u)<S2SV_blank>\" , length ) ) ; } break ; case ICMP6_MEMBERSHIP_REPORT : mld6_print ( ndo , ( const u_char * ) dp ) ; break ; case ICMP6_MEMBERSHIP_REDUCTION : mld6_print ( ndo , ( const u_char * ) dp ) ; break ; case ND_ROUTER_SOLICIT : # define RTSOLLEN 8 if ( ndo -> ndo_vflag ) { icmp6_opt_print ( ndo , ( const u_char * ) dp + RTSOLLEN , length - RTSOLLEN ) ; } break ; case ND_ROUTER_ADVERT : # define RTADVLEN 16 if ( ndo -> ndo_vflag ) { const struct nd_router_advert * p ; p = ( const struct nd_router_advert * ) dp ; ND_TCHECK ( p -> nd_ra_retransmit ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\thop<S2SV_blank>limit<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s]\" \",<S2SV_blank>pref<S2SV_blank>%s,<S2SV_blank>router<S2SV_blank>lifetime<S2SV_blank>%us,<S2SV_blank>reachable<S2SV_blank>time<S2SV_blank>%us,<S2SV_blank>retrans<S2SV_blank>time<S2SV_blank>%us\" , ( u_int ) p -> nd_ra_curhoplimit , bittok2str ( icmp6_opt_ra_flag_values , \"none\" , ( p -> nd_ra_flags_reserved ) ) , get_rtpref ( p -> nd_ra_flags_reserved ) , EXTRACT_16BITS ( & p -> nd_ra_router_lifetime ) , EXTRACT_32BITS ( & p -> nd_ra_reachable ) , EXTRACT_32BITS ( & p -> nd_ra_retransmit ) ) ) ; icmp6_opt_print ( ndo , ( const u_char * ) dp + RTADVLEN , length - RTADVLEN ) ; } break ; case ND_NEIGHBOR_SOLICIT : { const struct nd_neighbor_solicit * p ; p = ( const struct nd_neighbor_solicit * ) dp ; ND_TCHECK ( p -> nd_ns_target ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>who<S2SV_blank>has<S2SV_blank>%s\" , ip6addr_string ( ndo , & p -> nd_ns_target ) ) ) ; if ( ndo -> ndo_vflag ) { # define NDSOLLEN 24 icmp6_opt_print ( ndo , ( const u_char * ) dp + NDSOLLEN , length - NDSOLLEN ) ; } } break ; case ND_NEIGHBOR_ADVERT : { const struct nd_neighbor_advert * p ; p = ( const struct nd_neighbor_advert * ) dp ; ND_TCHECK ( p -> nd_na_target ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>tgt<S2SV_blank>is<S2SV_blank>%s\" , ip6addr_string ( ndo , & p -> nd_na_target ) ) ) ; if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( icmp6_nd_na_flag_values , \"none\" , EXTRACT_32BITS ( & p -> nd_na_flags_reserved ) ) ) ) ; # define NDADVLEN 24 icmp6_opt_print ( ndo , ( const u_char * ) dp + NDADVLEN , length - NDADVLEN ) ; # undef NDADVLEN } } break ; case ND_REDIRECT : # define RDR ( i ) ( ( const struct nd_redirect * ) ( i ) ) ND_TCHECK ( RDR ( dp ) -> nd_rd_dst ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ip6addr_string ( ndo , & RDR ( dp ) -> nd_rd_dst ) ) ) ; ND_TCHECK ( RDR ( dp ) -> nd_rd_target ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>to<S2SV_blank>%s\" , ip6addr_string ( ndo , & RDR ( dp ) -> nd_rd_target ) ) ) ; # define REDIRECTLEN 40 if ( ndo -> ndo_vflag ) { icmp6_opt_print ( ndo , ( const u_char * ) dp + REDIRECTLEN , length - REDIRECTLEN ) ; } break ; # undef REDIRECTLEN # undef RDR case ICMP6_ROUTER_RENUMBERING : icmp6_rrenum_print ( ndo , bp , ep ) ; break ; case ICMP6_NI_QUERY : case ICMP6_NI_REPLY : icmp6_nodeinfo_print ( ndo , length , bp , ep ) ; break ; case IND_SOLICIT : case IND_ADVERT : break ; case ICMP6_V2_MEMBERSHIP_REPORT : mldv2_report_print ( ndo , ( const u_char * ) dp , length ) ; break ; case ICMP6_MOBILEPREFIX_SOLICIT : case ICMP6_HADISCOV_REQUEST : ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; break ; case ICMP6_HADISCOV_REPLY : if ( ndo -> ndo_vflag ) { const struct in6_addr * in6 ; const u_char * cp ; ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; cp = ( const u_char * ) dp + length ; in6 = ( const struct in6_addr * ) ( dp + 1 ) ; for ( ; ( const u_char * ) in6 < cp ; in6 ++ ) { ND_TCHECK ( * in6 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ip6addr_string ( ndo , in6 ) ) ) ; } } break ; case ICMP6_MOBILEPREFIX_ADVERT : if ( ndo -> ndo_vflag ) { ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; <S2SV_StartBug> if ( dp -> icmp6_data16 [ 1 ] & 0xc0 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( dp -> icmp6_data16 [ 1 ] & 0x80 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"M\" ) ) ; <S2SV_StartBug> if ( dp -> icmp6_data16 [ 1 ] & 0x40 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"O\" ) ) ; # define MPADVLEN 8 icmp6_opt_print ( ndo , ( const u_char * ) dp + MPADVLEN , length - MPADVLEN ) ; } break ; case ND_RPL_MESSAGE : rpl_print ( ndo , dp , & dp -> icmp6_data8 [ 0 ] , length - sizeof ( struct icmp6_hdr ) + 4 ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t\" , length ) ; return ; } if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|icmp6]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ND_TCHECK <S2SV_ModEnd> ( dp -> <S2SV_ModStart> [ 1 ] <S2SV_ModEnd> ) ; if <S2SV_ModStart> 1 ] & 0xc0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>\" <S2SV_ModEnd> ) ) ; <S2SV_ModStart> 1 ] & 0x80 ) ND_PRINT ( ( ndo , \"M\" ) ) ; if ( dp -> icmp6_data16 [ 1 ] &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20854\n\n```\nCWE-125 static int serdes_probe ( struct platform_device * pdev ) { struct phy_provider * provider ; struct serdes_ctrl * ctrl ; unsigned int i ; int ret ; ctrl = devm_kzalloc ( & pdev -> dev , sizeof ( * ctrl ) , GFP_KERNEL ) ; if ( ! ctrl ) return - ENOMEM ; ctrl -> dev = & pdev -> dev ; ctrl -> regs = syscon_node_to_regmap ( pdev -> dev . parent -> of_node ) ; if ( IS_ERR ( ctrl -> regs ) ) return PTR_ERR ( ctrl -> regs ) ; <S2SV_StartBug> for ( i = 0 ; i <= SERDES_MAX ; i ++ ) { <S2SV_EndBug> ret = serdes_phy_create ( ctrl , i , & ctrl -> phys [ i ] ) ; if ( ret ) return ret ; } dev_set_drvdata ( & pdev -> dev , ctrl ) ; provider = devm_of_phy_provider_register ( ctrl -> dev , serdes_simple_xlate ) ; return PTR_ERR_OR_ZERO ( provider ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; i < <S2SV_ModEnd> SERDES_MAX ; i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20176\n\n```\nCWE-400 static void listdir ( unsigned int depth , int f , void * const tls_fd , const char * name ) { PureFileInfo * dir ; char * names ; PureFileInfo * s ; <S2SV_StartBug> PureFileInfo * r ; <S2SV_EndBug> int d ; if ( depth >= max_ls_depth || matches >= max_ls_files ) { return ; } if ( ( dir = sreaddir ( & names ) ) == NULL ) { addreply ( 226 , MSG_CANT_READ_FILE , name ) ; return ; } s = dir ; while ( s -> name_offset != ( size_t ) - 1 ) { d = 0 ; if ( FI_NAME ( s ) [ 0 ] != '.' ) { d = listfile ( s , NULL ) ; } else if ( opt_a ) { if ( FI_NAME ( s ) [ 1 ] == 0 || ( FI_NAME ( s ) [ 1 ] == '.' && FI_NAME ( s ) [ 2 ] == 0 ) ) { listfile ( s , NULL ) ; } else { d = listfile ( s , NULL ) ; } } if ( ! d ) { s -> name_offset = ( size_t ) - 1 ; } s ++ ; } outputfiles ( f , tls_fd ) ; r = dir ; <S2SV_StartBug> while ( opt_R && r != s ) { <S2SV_EndBug> if ( r -> name_offset != ( size_t ) - 1 && ! chdir ( FI_NAME ( r ) ) ) { <S2SV_StartBug> char * alloca_subdir ; <S2SV_EndBug> const size_t sizeof_subdir = PATH_MAX + 1U ; if ( ( alloca_subdir = ALLOCA ( sizeof_subdir ) ) == NULL ) { goto toomany ; } if ( SNCHECK ( snprintf ( alloca_subdir , sizeof_subdir , \"%s/%s\" , name , FI_NAME ( r ) ) , sizeof_subdir ) ) { goto nolist ; } wrstr ( f , tls_fd , \"\\\\r\\\\n\\\\r\\\\n\" ) ; wrstr ( f , tls_fd , alloca_subdir ) ; wrstr ( f , tls_fd , \":\\\\r\\\\n\\\\r\\\\n\" ) ; listdir ( depth + 1U , f , tls_fd , alloca_subdir ) ; nolist : <S2SV_StartBug> ALLOCA_FREE ( alloca_subdir ) ; <S2SV_EndBug> if ( matches >= max_ls_files ) { goto toomany ; } if ( chdir ( \"..\" ) ) { if ( chdir ( wd ) || chdir ( name ) ) { die ( 421 , LOG_ERR , \"chdir:<S2SV_blank>%s\" , strerror ( errno ) ) ; } } } r ++ ; } toomany : <S2SV_StartBug> free ( names ) ; <S2SV_EndBug> free ( dir ) ; names = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PureFileInfo * r ; char * alloca_subdir ; size_t sizeof_subdir <S2SV_ModStart> = dir ; sizeof_subdir = PATH_MAX + 1U ; if ( ( alloca_subdir = ALLOCA ( sizeof_subdir ) ) == NULL ) { goto toomany ; } <S2SV_ModStart> ) ) { <S2SV_ModEnd> if ( SNCHECK <S2SV_ModStart> ; nolist : <S2SV_ModEnd> if ( matches <S2SV_ModStart> } toomany : ALLOCA_FREE ( alloca_subdir ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6401\n\n```\nCWE-310 int use_env ( ) { int indent ; size_t flags = 0 ; json_t * json ; json_error_t error ; # ifdef _WIN32 _setmode ( _fileno ( stdout ) , _O_BINARY ) ; _setmode ( _fileno ( stderr ) , _O_BINARY ) ; # endif indent = getenv_int ( \"JSON_INDENT\" ) ; if ( indent < 0 || indent > 255 ) { fprintf ( stderr , \"invalid<S2SV_blank>value<S2SV_blank>for<S2SV_blank>JSON_INDENT:<S2SV_blank>%d\\\\n\" , indent ) ; return 2 ; } if ( indent > 0 ) flags |= JSON_INDENT ( indent ) ; if ( getenv_int ( \"JSON_COMPACT\" ) > 0 ) flags |= JSON_COMPACT ; if ( getenv_int ( \"JSON_ENSURE_ASCII\" ) ) flags |= JSON_ENSURE_ASCII ; if ( getenv_int ( \"JSON_PRESERVE_ORDER\" ) ) flags |= JSON_PRESERVE_ORDER ; if ( getenv_int ( \"JSON_SORT_KEYS\" ) ) flags |= JSON_SORT_KEYS ; <S2SV_StartBug> if ( getenv_int ( \"STRIP\" ) ) { <S2SV_EndBug> size_t size = 0 , used = 0 ; char * buffer = NULL ; while ( 1 ) { size_t count ; size = ( size == 0 ? 128 : size * 2 ) ; buffer = realloc ( buffer , size ) ; if ( ! buffer ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) size ) ; return 1 ; } count = fread ( buffer + used , 1 , size - used , stdin ) ; if ( count < size - used ) { buffer [ used + count ] = '\\\\0' ; break ; } used += count ; } json = json_loads ( strip ( buffer ) , 0 , & error ) ; free ( buffer ) ; } else json = json_loadf ( stdin , 0 , & error ) ; if ( ! json ) { fprintf ( stderr , \"%d<S2SV_blank>%d<S2SV_blank>%d\\\\n%s\\\\n\" , error . line , error . column , error . position , error . text ) ; return 1 ; } json_dumpf ( json , stdout , flags ) ; json_decref ( json ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( getenv ( \"HASHSEED\" ) ) json_object_seed ( getenv_int ( \"HASHSEED\" ) ) ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static int _hostsock_getsockname ( oe_fd_t * sock_ , struct oe_sockaddr * addr , oe_socklen_t * addrlen ) { int ret = - 1 ; sock_t * sock = _cast_sock ( sock_ ) ; oe_socklen_t addrlen_in = 0 ; <S2SV_StartBug> oe_errno = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( ! sock ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( addrlen ) <S2SV_EndBug> addrlen_in = * addrlen ; if ( oe_syscall_getsockname_ocall ( & ret , sock -> host_fd , <S2SV_StartBug> ( struct oe_sockaddr * ) addr , <S2SV_EndBug> addrlen_in , <S2SV_StartBug> addrlen ) != OE_OK ) <S2SV_EndBug> { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> done : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; oe_socklen_t addrlen_out = 0 ; <S2SV_ModStart> ( ! sock || ! addr || ! addrlen ) OE_RAISE_ERRNO ( OE_EINVAL ) ; addrlen_in = * addrlen ; if ( addrlen_in < 0 <S2SV_ModStart> ; if ( <S2SV_ModEnd> oe_syscall_getsockname_ocall ( & <S2SV_ModStart> -> host_fd , <S2SV_ModEnd> addr , addrlen_in <S2SV_ModStart> , addrlen_in , & addrlen_out <S2SV_ModEnd> ) != OE_OK <S2SV_ModStart> ) ; } if ( addrlen_out > sizeof ( struct oe_sockaddr_storage ) ) OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( addrlen_in >= addrlen_out ) * addrlen = addrlen_out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18021\n\n```\nCWE-20 static int set_core_reg ( struct kvm_vcpu * vcpu , const struct kvm_one_reg * reg ) { __u32 __user * uaddr = ( __u32 __user * ) ( unsigned long ) reg -> addr ; struct kvm_regs * regs = vcpu_gp_regs ( vcpu ) ; int nr_regs = sizeof ( * regs ) / sizeof ( __u32 ) ; __uint128_t tmp ; void * valp = & tmp ; u64 off ; int err = 0 ; off = core_reg_offset_from_id ( reg -> id ) ; if ( off >= nr_regs || ( off + ( KVM_REG_SIZE ( reg -> id ) / sizeof ( __u32 ) ) ) >= nr_regs ) return - ENOENT ; if ( validate_core_offset ( reg ) ) return - EINVAL ; if ( KVM_REG_SIZE ( reg -> id ) > sizeof ( tmp ) ) return - EINVAL ; if ( copy_from_user ( valp , uaddr , KVM_REG_SIZE ( reg -> id ) ) ) { err = - EFAULT ; goto out ; } if ( off == KVM_REG_ARM_CORE_REG ( regs . pstate ) ) { <S2SV_StartBug> u32 mode = ( * ( u32 * ) valp ) & PSR_AA32_MODE_MASK ; <S2SV_EndBug> switch ( mode ) { case PSR_AA32_MODE_USR : <S2SV_StartBug> case PSR_AA32_MODE_FIQ : <S2SV_EndBug> case PSR_AA32_MODE_IRQ : case PSR_AA32_MODE_SVC : case PSR_AA32_MODE_ABT : case PSR_AA32_MODE_UND : <S2SV_StartBug> case PSR_MODE_EL0t : <S2SV_EndBug> case PSR_MODE_EL1t : <S2SV_StartBug> case PSR_MODE_EL1h : <S2SV_EndBug> break ; default : err = - EINVAL ; goto out ; } } memcpy ( ( u32 * ) regs + off , valp , KVM_REG_SIZE ( reg -> id ) ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { u64 <S2SV_ModEnd> mode = ( <S2SV_ModStart> ( * ( u64 <S2SV_ModEnd> * ) valp <S2SV_ModStart> case PSR_AA32_MODE_USR : if ( ! system_supports_32bit_el0 ( ) ) return - EINVAL ; break ; <S2SV_ModStart> case PSR_AA32_MODE_UND : if ( ! vcpu_el1_is_32bit ( vcpu ) ) return - EINVAL ; break ; <S2SV_ModStart> case PSR_MODE_EL1h : if ( vcpu_el1_is_32bit ( vcpu ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19064\n\n```\nCWE-401 static int fsl_lpspi_probe ( struct platform_device * pdev ) { struct device_node * np = pdev -> dev . of_node ; struct fsl_lpspi_data * fsl_lpspi ; struct spi_controller * controller ; struct spi_imx_master * lpspi_platform_info = dev_get_platdata ( & pdev -> dev ) ; struct resource * res ; int i , ret , irq ; u32 temp ; bool is_slave ; is_slave = of_property_read_bool ( ( & pdev -> dev ) -> of_node , \"spi-slave\" ) ; if ( is_slave ) controller = spi_alloc_slave ( & pdev -> dev , sizeof ( struct fsl_lpspi_data ) ) ; else controller = spi_alloc_master ( & pdev -> dev , sizeof ( struct fsl_lpspi_data ) ) ; if ( ! controller ) return - ENOMEM ; platform_set_drvdata ( pdev , controller ) ; fsl_lpspi = spi_controller_get_devdata ( controller ) ; fsl_lpspi -> dev = & pdev -> dev ; fsl_lpspi -> is_slave = is_slave ; if ( ! fsl_lpspi -> is_slave ) { for ( i = 0 ; i < controller -> num_chipselect ; i ++ ) { int cs_gpio = of_get_named_gpio ( np , \"cs-gpios\" , i ) ; if ( ! gpio_is_valid ( cs_gpio ) && lpspi_platform_info ) cs_gpio = lpspi_platform_info -> chipselect [ i ] ; fsl_lpspi -> chipselect [ i ] = cs_gpio ; if ( ! gpio_is_valid ( cs_gpio ) ) continue ; ret = devm_gpio_request ( & pdev -> dev , fsl_lpspi -> chipselect [ i ] , DRIVER_NAME ) ; if ( ret ) { dev_err ( & pdev -> dev , \"can\\'t<S2SV_blank>get<S2SV_blank>cs<S2SV_blank>gpios\\\\n\" ) ; goto out_controller_put ; } } controller -> cs_gpios = fsl_lpspi -> chipselect ; controller -> prepare_message = fsl_lpspi_prepare_message ; } controller -> bits_per_word_mask = SPI_BPW_RANGE_MASK ( 8 , 32 ) ; controller -> transfer_one = fsl_lpspi_transfer_one ; controller -> prepare_transfer_hardware = lpspi_prepare_xfer_hardware ; controller -> unprepare_transfer_hardware = lpspi_unprepare_xfer_hardware ; controller -> mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH ; controller -> flags = SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX ; controller -> dev . of_node = pdev -> dev . of_node ; controller -> bus_num = pdev -> id ; controller -> slave_abort = fsl_lpspi_slave_abort ; init_completion ( & fsl_lpspi -> xfer_done ) ; res = platform_get_resource ( pdev , IORESOURCE_MEM , 0 ) ; fsl_lpspi -> base = devm_ioremap_resource ( & pdev -> dev , res ) ; if ( IS_ERR ( fsl_lpspi -> base ) ) { ret = PTR_ERR ( fsl_lpspi -> base ) ; goto out_controller_put ; } fsl_lpspi -> base_phys = res -> start ; irq = platform_get_irq ( pdev , 0 ) ; if ( irq < 0 ) { ret = irq ; goto out_controller_put ; } ret = devm_request_irq ( & pdev -> dev , irq , fsl_lpspi_isr , 0 , dev_name ( & pdev -> dev ) , fsl_lpspi ) ; if ( ret ) { dev_err ( & pdev -> dev , \"can\\'t<S2SV_blank>get<S2SV_blank>irq%d:<S2SV_blank>%d\\\\n\" , irq , ret ) ; goto out_controller_put ; } fsl_lpspi -> clk_per = devm_clk_get ( & pdev -> dev , \"per\" ) ; if ( IS_ERR ( fsl_lpspi -> clk_per ) ) { ret = PTR_ERR ( fsl_lpspi -> clk_per ) ; goto out_controller_put ; } fsl_lpspi -> clk_ipg = devm_clk_get ( & pdev -> dev , \"ipg\" ) ; if ( IS_ERR ( fsl_lpspi -> clk_ipg ) ) { ret = PTR_ERR ( fsl_lpspi -> clk_ipg ) ; goto out_controller_put ; } ret = fsl_lpspi_init_rpm ( fsl_lpspi ) ; if ( ret ) goto out_controller_put ; ret = pm_runtime_get_sync ( fsl_lpspi -> dev ) ; if ( ret < 0 ) { dev_err ( fsl_lpspi -> dev , \"failed<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>clock\\\\n\" ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> } temp = readl ( fsl_lpspi -> base + IMX7ULP_PARAM ) ; fsl_lpspi -> txfifosize = 1 << ( temp & 0x0f ) ; fsl_lpspi -> rxfifosize = 1 << ( ( temp >> 8 ) & 0x0f ) ; ret = fsl_lpspi_dma_init ( & pdev -> dev , fsl_lpspi , controller ) ; if ( ret == - EPROBE_DEFER ) goto out_controller_put ; if ( ret < 0 ) dev_err ( & pdev -> dev , \"dma<S2SV_blank>setup<S2SV_blank>error<S2SV_blank>%d,<S2SV_blank>use<S2SV_blank>pio\\\\n\" , ret ) ; ret = devm_spi_register_controller ( & pdev -> dev , controller ) ; if ( ret < 0 ) { dev_err ( & pdev -> dev , \"spi_register_controller<S2SV_blank>error.\\\\n\" ) ; goto out_controller_put ; } return 0 ; out_controller_put : spi_controller_put ( controller ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"failed<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>clock\\\\n\" ) ; goto out_controller_put <S2SV_ModEnd> ; } temp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4312\n\n```\nCWE-119 static int unix_attach_fds ( struct scm_cookie * scm , struct sk_buff * skb ) { int i ; unsigned char max_level = 0 ; int unix_sock_count = 0 ; <S2SV_StartBug> for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) { <S2SV_EndBug> struct sock * sk = unix_get_socket ( scm -> fp -> fp [ i ] ) ; if ( sk ) { unix_sock_count ++ ; max_level = max ( max_level , unix_sk ( sk ) -> recursion_level ) ; } } if ( unlikely ( max_level > MAX_RECURSION_LEVEL ) ) return - ETOOMANYREFS ; UNIXCB ( skb ) . fp = scm_fp_dup ( scm -> fp ) ; if ( ! UNIXCB ( skb ) . fp ) return - ENOMEM ; <S2SV_StartBug> if ( unix_sock_count ) { <S2SV_EndBug> for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) unix_inflight ( scm -> fp -> fp [ i ] ) ; <S2SV_StartBug> } <S2SV_EndBug> return max_level ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; if ( too_many_unix_fds ( current ) ) return - ETOOMANYREFS ; <S2SV_ModStart> - ENOMEM ; <S2SV_ModEnd> for ( i <S2SV_ModStart> ] ) ; <S2SV_ModEnd> return max_level ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13030\n\n```\nCWE-125 void pimv1_print ( netdissect_options * ndo , register const u_char * bp , register u_int len ) { <S2SV_StartBug> register const u_char * ep ; <S2SV_EndBug> register u_char type ; <S2SV_StartBug> ep = ( const u_char * ) ndo -> ndo_snapend ; <S2SV_EndBug> if ( bp >= ep ) return ; ND_TCHECK ( bp [ 1 ] ) ; type = bp [ 1 ] ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( pimv1_type_str , \"[type<S2SV_blank>%u]\" , type ) ) ) ; switch ( type ) { case PIMV1_TYPE_QUERY : if ( ND_TTEST ( bp [ 8 ] ) ) { switch ( bp [ 8 ] >> 4 ) { case 0 : ND_PRINT ( ( ndo , \"<S2SV_blank>Dense-mode\" ) ) ; break ; case 1 : ND_PRINT ( ( ndo , \"<S2SV_blank>Sparse-mode\" ) ) ; break ; case 2 : ND_PRINT ( ( ndo , \"<S2SV_blank>Sparse-Dense-mode\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>mode-%d\" , bp [ 8 ] >> 4 ) ) ; break ; } } if ( ndo -> ndo_vflag ) { ND_TCHECK2 ( bp [ 10 ] , 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(Hold-time<S2SV_blank>\" ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( & bp [ 10 ] ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } break ; case PIMV1_TYPE_REGISTER : ND_TCHECK2 ( bp [ 8 ] , 20 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>><S2SV_blank>%s\" , ipaddr_string ( ndo , & bp [ 20 ] ) , ipaddr_string ( ndo , & bp [ 24 ] ) ) ) ; break ; case PIMV1_TYPE_REGISTER_STOP : ND_TCHECK2 ( bp [ 12 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>><S2SV_blank>%s\" , ipaddr_string ( ndo , & bp [ 8 ] ) , ipaddr_string ( ndo , & bp [ 12 ] ) ) ) ; break ; case PIMV1_TYPE_RP_REACHABILITY : if ( ndo -> ndo_vflag ) { ND_TCHECK2 ( bp [ 22 ] , 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>group<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp [ 8 ] ) ) ) ; if ( EXTRACT_32BITS ( & bp [ 12 ] ) != 0xffffffff ) ND_PRINT ( ( ndo , \"/%s\" , ipaddr_string ( ndo , & bp [ 12 ] ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>RP<S2SV_blank>%s<S2SV_blank>hold<S2SV_blank>\" , ipaddr_string ( ndo , & bp [ 16 ] ) ) ) ; unsigned_relts_print ( ndo , EXTRACT_16BITS ( & bp [ 22 ] ) ) ; } break ; case PIMV1_TYPE_ASSERT : ND_TCHECK2 ( bp [ 16 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>><S2SV_blank>%s\" , ipaddr_string ( ndo , & bp [ 16 ] ) , ipaddr_string ( ndo , & bp [ 8 ] ) ) ) ; if ( EXTRACT_32BITS ( & bp [ 12 ] ) != 0xffffffff ) ND_PRINT ( ( ndo , \"/%s\" , ipaddr_string ( ndo , & bp [ 12 ] ) ) ) ; ND_TCHECK2 ( bp [ 24 ] , 4 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>pref<S2SV_blank>%d<S2SV_blank>metric<S2SV_blank>%d\" , ( bp [ 20 ] & 0x80 ) ? \"RP-tree\" : \"SPT\" , EXTRACT_32BITS ( & bp [ 20 ] ) & 0x7fffffff , EXTRACT_32BITS ( & bp [ 24 ] ) ) ) ; break ; case PIMV1_TYPE_JOIN_PRUNE : case PIMV1_TYPE_GRAFT : case PIMV1_TYPE_GRAFT_ACK : <S2SV_StartBug> if ( ndo -> ndo_vflag ) <S2SV_EndBug> pimv1_join_prune_print ( ndo , & bp [ 8 ] , len - 8 ) ; <S2SV_StartBug> break ; <S2SV_EndBug> } ND_TCHECK ( bp [ 4 ] ) ; if ( ( bp [ 4 ] >> 4 ) != 1 ) ND_PRINT ( ( ndo , \"<S2SV_blank>[v%d]\" , bp [ 4 ] >> 4 ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|pim]\" ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { register <S2SV_ModEnd> u_char type ; <S2SV_ModStart> u_char type ; <S2SV_ModEnd> ND_TCHECK ( bp <S2SV_ModStart> -> ndo_vflag ) { if ( len < 8 ) goto trunc ; <S2SV_ModStart> 8 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6347\n\n```\nCWE-125 static void ip_cmsg_recv_checksum ( struct msghdr * msg , struct sk_buff * skb , int tlen , int offset ) { __wsum csum = skb -> csum ; if ( skb -> ip_summed != CHECKSUM_COMPLETE ) return ; <S2SV_StartBug> if ( offset != 0 ) <S2SV_EndBug> csum = csum_sub ( csum , <S2SV_StartBug> csum_partial ( skb_transport_header ( skb ) + tlen , <S2SV_EndBug> <S2SV_StartBug> offset , 0 ) ) ; <S2SV_EndBug> put_cmsg ( msg , SOL_IP , IP_CHECKSUM , sizeof ( __wsum ) , & csum ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != 0 ) { int tend_off = skb_transport_offset ( skb ) + tlen ; <S2SV_ModStart> ( csum , skb_checksum ( skb , tend_off , <S2SV_ModEnd> offset , 0 <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 int yr_re_fast_exec ( uint8_t * code , uint8_t * input_data , <S2SV_StartBug> size_t input_size , <S2SV_EndBug> int flags , RE_MATCH_CALLBACK_FUNC callback , void * callback_args ) { RE_REPEAT_ANY_ARGS * repeat_any_args ; uint8_t * code_stack [ MAX_FAST_RE_STACK ] ; uint8_t * input_stack [ MAX_FAST_RE_STACK ] ; int matches_stack [ MAX_FAST_RE_STACK ] ; uint8_t * ip = code ; uint8_t * input = input_data ; uint8_t * next_input ; uint8_t * next_opcode ; uint8_t mask ; uint8_t value ; int i ; int stop ; int input_incr ; int sp = 0 ; int bytes_matched ; <S2SV_StartBug> int max_bytes_matched = input_size ; <S2SV_EndBug> input_incr = flags & RE_FLAGS_BACKWARDS ? - 1 : 1 ; if ( flags & RE_FLAGS_BACKWARDS ) input -- ; code_stack [ sp ] = code ; input_stack [ sp ] = input ; matches_stack [ sp ] = 0 ; sp ++ ; while ( sp > 0 ) { sp -- ; ip = code_stack [ sp ] ; input = input_stack [ sp ] ; bytes_matched = matches_stack [ sp ] ; stop = FALSE ; while ( ! stop ) { if ( * ip == RE_OPCODE_MATCH ) { if ( flags & RE_FLAGS_EXHAUSTIVE ) { int cb_result = callback ( flags & RE_FLAGS_BACKWARDS ? input + 1 : input_data , bytes_matched , flags , callback_args ) ; switch ( cb_result ) { case ERROR_INSUFFICIENT_MEMORY : return - 2 ; case ERROR_TOO_MANY_MATCHES : return - 3 ; default : if ( cb_result != ERROR_SUCCESS ) return - 4 ; } break ; } else { return bytes_matched ; } } if ( bytes_matched >= max_bytes_matched ) break ; switch ( * ip ) { case RE_OPCODE_LITERAL : if ( * input == * ( ip + 1 ) ) { bytes_matched ++ ; input += input_incr ; ip += 2 ; } else { stop = TRUE ; } break ; case RE_OPCODE_MASKED_LITERAL : value = * ( int16_t * ) ( ip + 1 ) & 0xFF ; mask = * ( int16_t * ) ( ip + 1 ) >> 8 ; if ( ( * input & mask ) == value ) { bytes_matched ++ ; input += input_incr ; ip += 3 ; } else { stop = TRUE ; } break ; case RE_OPCODE_ANY : bytes_matched ++ ; input += input_incr ; ip += 1 ; break ; case RE_OPCODE_REPEAT_ANY_UNGREEDY : repeat_any_args = ( RE_REPEAT_ANY_ARGS * ) ( ip + 1 ) ; next_opcode = ip + 1 + sizeof ( RE_REPEAT_ANY_ARGS ) ; for ( i = repeat_any_args -> min + 1 ; i <= repeat_any_args -> max ; i ++ ) { next_input = input + i * input_incr ; if ( bytes_matched + i >= max_bytes_matched ) break ; if ( * ( next_opcode ) != RE_OPCODE_LITERAL || ( * ( next_opcode ) == RE_OPCODE_LITERAL && * ( next_opcode + 1 ) == * next_input ) ) { if ( sp >= MAX_FAST_RE_STACK ) return - 4 ; code_stack [ sp ] = next_opcode ; input_stack [ sp ] = next_input ; matches_stack [ sp ] = bytes_matched + i ; sp ++ ; } } input += input_incr * repeat_any_args -> min ; bytes_matched += repeat_any_args -> min ; ip = next_opcode ; break ; default : assert ( FALSE ) ; } } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> input_data , size_t input_forwards_size , size_t input_backwards_size <S2SV_ModEnd> , int flags <S2SV_ModStart> ; int max_bytes_matched ; max_bytes_matched = flags & RE_FLAGS_BACKWARDS ? input_backwards_size : input_forwards_size <S2SV_ModEnd> ; input_incr =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11328\n\n```\nCWE-119 int module_load ( YR_SCAN_CONTEXT * context , YR_OBJECT * module_object , void * module_data , size_t module_data_size ) { set_integer ( 1 , module_object , \"constants.one\" ) ; set_integer ( 2 , module_object , \"constants.two\" ) ; set_string ( \"foo\" , module_object , \"constants.foo\" ) ; set_string ( \"\" , module_object , \"constants.empty\" ) ; set_integer ( 1 , module_object , \"struct_array[1].i\" ) ; set_integer ( 0 , module_object , \"integer_array[%i]\" , 0 ) ; set_integer ( 1 , module_object , \"integer_array[%i]\" , 1 ) ; set_integer ( 2 , module_object , \"integer_array[%i]\" , 2 ) ; <S2SV_StartBug> set_string ( \"foo\" , module_object , \"string_array[%i]\" , 0 ) ; <S2SV_EndBug> set_string ( \"bar\" , module_object , \"string_array[%i]\" , 1 ) ; set_string ( \"baz\" , module_object , \"string_array[%i]\" , 2 ) ; set_sized_string ( \"foo\\\\0bar\" , 7 , module_object , \"string_array[%i]\" , 3 ) ; set_string ( \"foo\" , module_object , \"string_dict[%s]\" , \"foo\" ) ; set_string ( \"bar\" , module_object , \"string_dict[\\\\\"bar\\\\\"]\" ) ; set_string ( \"foo\" , module_object , \"struct_dict[%s].s\" , \"foo\" ) ; set_integer ( 1 , module_object , \"struct_dict[%s].i\" , \"foo\" ) ; return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) ; set_integer ( 256 , module_object , \"integer_array[%i]\" , 256 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5697\n\n```\nCWE-200 static int get_bitmap_file ( struct mddev * mddev , void __user * arg ) { mdu_bitmap_file_t * file = NULL ; char * ptr ; int err ; <S2SV_StartBug> file = kmalloc ( sizeof ( * file ) , GFP_NOIO ) ; <S2SV_EndBug> if ( ! file ) return - ENOMEM ; err = 0 ; spin_lock ( & mddev -> lock ) ; if ( ! mddev -> bitmap_info . file ) file -> pathname [ 0 ] = '\\\\0' ; else if ( ( ptr = file_path ( mddev -> bitmap_info . file , file -> pathname , sizeof ( file -> pathname ) ) ) , IS_ERR ( ptr ) ) err = PTR_ERR ( ptr ) ; else memmove ( file -> pathname , ptr , sizeof ( file -> pathname ) - ( ptr - file -> pathname ) ) ; spin_unlock ( & mddev -> lock ) ; if ( err == 0 && copy_to_user ( arg , file , sizeof ( * file ) ) ) err = - EFAULT ; kfree ( file ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; file = kzalloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15163\n\n```\nCWE-476 static int daemon_AuthUserPwd ( char * username , char * password , char * errbuf ) { # ifdef _WIN32 HANDLE Token ; if ( LogonUser ( username , \".\" , password , LOGON32_LOGON_NETWORK , LOGON32_PROVIDER_DEFAULT , & Token ) == 0 ) { pcap_fmt_errmsg_for_win32_err ( errbuf , PCAP_ERRBUF_SIZE , GetLastError ( ) , \"LogonUser()<S2SV_blank>failed\" ) ; return - 1 ; } if ( ImpersonateLoggedOnUser ( Token ) == 0 ) { pcap_fmt_errmsg_for_win32_err ( errbuf , PCAP_ERRBUF_SIZE , GetLastError ( ) , \"ImpersonateLoggedOnUser()<S2SV_blank>failed\" ) ; CloseHandle ( Token ) ; return - 1 ; } CloseHandle ( Token ) ; return 0 ; # else struct passwd * user ; char * user_password ; # ifdef HAVE_GETSPNAM struct spwd * usersp ; <S2SV_StartBug> # endif <S2SV_EndBug> if ( ( user = getpwnam ( username ) ) == NULL ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed:<S2SV_blank>user<S2SV_blank>name<S2SV_blank>or<S2SV_blank>password<S2SV_blank>incorrect\" ) ; return - 1 ; } # ifdef HAVE_GETSPNAM if ( ( usersp = getspnam ( username ) ) == NULL ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed:<S2SV_blank>user<S2SV_blank>name<S2SV_blank>or<S2SV_blank>password<S2SV_blank>incorrect\" ) ; return - 1 ; } user_password = usersp -> sp_pwdp ; # else user_password = user -> pw_passwd ; # endif <S2SV_StartBug> if ( strcmp ( user_password , ( char * ) crypt ( password , user_password ) ) != 0 ) <S2SV_EndBug> { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed:<S2SV_blank>user<S2SV_blank>name<S2SV_blank>or<S2SV_blank>password<S2SV_blank>incorrect\" ) ; return - 1 ; } if ( setuid ( user -> pw_uid ) ) { pcap_fmt_errmsg_for_errno ( errbuf , PCAP_ERRBUF_SIZE , errno , \"setuid\" ) ; return - 1 ; } return 0 ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif char * crypt_password ; <S2SV_ModStart> ; # endif crypt_password = crypt ( password , user_password ) ; if ( crypt_password == NULL ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"Authentication<S2SV_blank>failed\" ) ; return - 1 ; } <S2SV_ModStart> ( user_password , crypt_password <S2SV_ModEnd> ) != 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6874\n\n```\nCWE-362 static void put_ucounts ( struct ucounts * ucounts ) { unsigned long flags ; <S2SV_StartBug> if ( atomic_dec_and_test ( & ucounts -> count ) ) { <S2SV_EndBug> spin_lock_irqsave ( & ucounts_lock , flags ) ; <S2SV_StartBug> hlist_del_init ( & ucounts -> node ) ; <S2SV_EndBug> spin_unlock_irqrestore ( & ucounts_lock , flags ) ; kfree ( ucounts ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long flags ; <S2SV_ModEnd> spin_lock_irqsave ( & <S2SV_ModStart> flags ) ; ucounts -> count -= 1 ; if ( ! ucounts -> count ) <S2SV_ModStart> -> node ) ; else ucounts = NULL <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4611\n\n```\nCWE-20 static int lz4_uncompress ( const char * source , char * dest , int osize ) { const BYTE * ip = ( const BYTE * ) source ; const BYTE * ref ; BYTE * op = ( BYTE * ) dest ; BYTE * const oend = op + osize ; BYTE * cpy ; unsigned token ; size_t length ; size_t dec32table [ ] = { 0 , 3 , 2 , 3 , 0 , 0 , 0 , 0 } ; # if LZ4_ARCH64 size_t dec64table [ ] = { 0 , 0 , 0 , - 1 , 0 , 1 , 2 , 3 } ; # endif while ( 1 ) { token = * ip ++ ; length = ( token >> ML_BITS ) ; if ( length == RUN_MASK ) { size_t len ; len = * ip ++ ; for ( ; len == 255 ; length += 255 ) len = * ip ++ ; <S2SV_StartBug> length += len ; <S2SV_EndBug> } cpy = op + length ; if ( unlikely ( cpy > oend - COPYLENGTH ) ) { if ( cpy != oend ) goto _output_error ; memcpy ( op , ip , length ) ; ip += length ; break ; } LZ4_WILDCOPY ( ip , op , cpy ) ; ip -= ( op - cpy ) ; op = cpy ; LZ4_READ_LITTLEENDIAN_16 ( ref , cpy , ip ) ; ip += 2 ; if ( unlikely ( ref < ( BYTE * const ) dest ) ) goto _output_error ; length = token & ML_MASK ; if ( length == ML_MASK ) { for ( ; * ip == 255 ; length += 255 ) ip ++ ; length += * ip ++ ; } if ( unlikely ( ( op - ref ) < STEPSIZE ) ) { # if LZ4_ARCH64 size_t dec64 = dec64table [ op - ref ] ; # else const int dec64 = 0 ; # endif op [ 0 ] = ref [ 0 ] ; op [ 1 ] = ref [ 1 ] ; op [ 2 ] = ref [ 2 ] ; op [ 3 ] = ref [ 3 ] ; op += 4 ; ref += 4 ; ref -= dec32table [ op - ref ] ; PUT4 ( ref , op ) ; op += STEPSIZE - 4 ; ref -= dec64 ; } else { LZ4_COPYSTEP ( ref , op ) ; } cpy = op + length - ( STEPSIZE - 4 ) ; if ( cpy > ( oend - COPYLENGTH ) ) { if ( cpy > oend ) goto _output_error ; LZ4_SECURECOPY ( ref , op , ( oend - COPYLENGTH ) ) ; while ( op < cpy ) * op ++ = * ref ++ ; op = cpy ; if ( op == oend ) goto _output_error ; continue ; } LZ4_SECURECOPY ( ref , op , cpy ) ; op = cpy ; } return ( int ) ( ( ( char * ) ip ) - source ) ; _output_error : return ( int ) ( - ( ( ( char * ) ip ) - source ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip ++ ; if ( unlikely ( length > ( size_t ) ( length + len ) ) ) goto _output_error ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14954\n\n```\nCWE-200 SYSCALL_DEFINE5 ( waitid , int , which , pid_t , upid , struct siginfo __user * , infop , int , options , struct rusage __user * , ru ) { struct rusage r ; struct waitid_info info = { . status = 0 } ; long err = kernel_waitid ( which , upid , & info , options , ru ? & r : NULL ) ; int signo = 0 ; if ( err > 0 ) { signo = SIGCHLD ; err = 0 ; <S2SV_StartBug> } <S2SV_EndBug> if ( ! err ) { if ( ru && copy_to_user ( ru , & r , sizeof ( struct rusage ) ) ) return - EFAULT ; } if ( ! infop ) return err ; user_access_begin ( ) ; unsafe_put_user ( signo , & infop -> si_signo , Efault ) ; unsafe_put_user ( 0 , & infop -> si_errno , Efault ) ; unsafe_put_user ( info . cause , & infop -> si_code , Efault ) ; unsafe_put_user ( info . pid , & infop -> si_pid , Efault ) ; unsafe_put_user ( info . uid , & infop -> si_uid , Efault ) ; unsafe_put_user ( info . status , & infop -> si_status , Efault ) ; user_access_end ( ) ; return err ; Efault : user_access_end ( ) ; return - EFAULT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( ru\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9098\n\n```\nCWE-200 static Image * ReadRLEImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define SkipLinesOp 0x01 # define SetColorOp 0x02 # define SkipPixelsOp 0x03 # define ByteDataOp 0x05 # define RunDataOp 0x06 # define EOFOp 0x07 char magick [ 12 ] ; Image * image ; int opcode , operand , status ; MagickStatusType flags ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; Quantum index ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bits_per_pixel , map_length , number_colormaps , number_planes , number_planes_filled , one , pixel_info_length ; ssize_t count , offset , y ; unsigned char background_color [ 256 ] , * colormap , pixel , plane , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 2 ) || ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { image -> page . x = ReadBlobLSBShort ( image ) ; image -> page . y = ReadBlobLSBShort ( image ) ; image -> columns = ReadBlobLSBShort ( image ) ; image -> rows = ReadBlobLSBShort ( image ) ; flags = ( MagickStatusType ) ReadBlobByte ( image ) ; image -> alpha_trait = flags & 0x04 ? BlendPixelTrait : UndefinedPixelTrait ; number_planes = ( size_t ) ReadBlobByte ( image ) ; bits_per_pixel = ( size_t ) ReadBlobByte ( image ) ; number_colormaps = ( size_t ) ReadBlobByte ( image ) ; map_length = ( unsigned char ) ReadBlobByte ( image ) ; if ( map_length >= 22 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; one = 1 ; map_length = one << map_length ; if ( ( number_planes == 0 ) || ( number_planes == 2 ) || ( ( flags & 0x04 ) && ( number_colormaps > 254 ) ) || ( bits_per_pixel != 8 ) || ( image -> columns == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( flags & 0x02 ) { for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) background_color [ i ] = 0 ; ( void ) ReadBlobByte ( image ) ; } else { p = background_color ; for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) * p ++ = ( unsigned char ) ReadBlobByte ( image ) ; } if ( ( number_planes & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } colormap = ( unsigned char * ) NULL ; if ( number_colormaps != 0 ) { colormap = ( unsigned char * ) AcquireQuantumMemory ( number_colormaps , 3 * map_length * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; for ( i = 0 ; i < ( ssize_t ) number_colormaps ; i ++ ) for ( x = 0 ; x < ( ssize_t ) map_length ; x ++ ) * p ++ = ( unsigned char ) ScaleShortToQuantum ( ReadBlobLSBShort ( image ) ) ; } if ( ( flags & 0x08 ) != 0 ) { char * comment ; size_t length ; length = ReadBlobLSBShort ( image ) ; if ( length != 0 ) { comment = ( char * ) AcquireQuantumMemory ( length , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , length - 1 , ( unsigned char * ) comment ) ; comment [ length - 1 ] = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; if ( ( length & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) number_planes ++ ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; number_planes_filled = ( number_planes % 2 == 0 ) ? number_planes : number_planes + 1 ; if ( ( number_pixels * number_planes_filled ) != ( size_t ) ( number_pixels * number_planes_filled ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info = AcquireVirtualMemory ( image -> columns , image -> rows * MagickMax ( number_planes_filled , 4 ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info_length = image -> columns * image -> rows * MagickMax ( number_planes_filled , 4 ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; <S2SV_StartBug> if ( ( flags & 0x01 ) && ! ( flags & 0x02 ) ) <S2SV_EndBug> { ssize_t j ; p = pixels ; for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { if ( image -> alpha_trait == UndefinedPixelTrait ) for ( j = 0 ; j < ( ssize_t ) number_planes ; j ++ ) * p ++ = background_color [ j ] ; else { for ( j = 0 ; j < ( ssize_t ) ( number_planes - 1 ) ; j ++ ) * p ++ = background_color [ j ] ; * p ++ = 0 ; } } } plane = 0 ; x = 0 ; y = 0 ; opcode = ReadBlobByte ( image ) ; do { switch ( opcode & 0x3f ) { case SkipLinesOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; x = 0 ; y += operand ; break ; } case SetColorOp : { operand = ReadBlobByte ( image ) ; plane = ( unsigned char ) operand ; if ( plane == 255 ) plane = ( unsigned char ) ( number_planes - 1 ) ; x = 0 ; break ; } case SkipPixelsOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; x += operand ; break ; } case ByteDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( ( offset < 0 ) || ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } if ( operand & 0x01 ) ( void ) ReadBlobByte ( image ) ; x += operand ; break ; } case RunDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; pixel = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) ReadBlobByte ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( ( offset < 0 ) || ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } x += operand ; break ; } default : break ; } opcode = ReadBlobByte ( image ) ; } while ( ( ( opcode & 0x3f ) != EOFOp ) && ( opcode != EOF ) ) ; if ( number_colormaps != 0 ) { MagickStatusType mask ; mask = ( MagickStatusType ) ( map_length - 1 ) ; p = pixels ; x = ( ssize_t ) number_planes ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { ValidateColormapValue ( image , * p & mask , & index , exception ) ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } else if ( ( number_planes >= 3 ) && ( number_colormaps >= 3 ) ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) for ( x = 0 ; x < ( ssize_t ) number_planes ; x ++ ) { ValidateColormapValue ( image , ( size_t ) ( x * map_length + ( * p & mask ) ) , & index , exception ) ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } if ( ( i < ( ssize_t ) number_pixels ) || ( x < ( ssize_t ) number_planes ) ) { colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } } if ( number_planes >= 3 ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( number_colormaps == 0 ) map_length = 256 ; if ( AcquireImageColormap ( image , map_length , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; } else if ( number_colormaps > 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * ( p + map_length ) ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * ( p + map_length * 2 ) ) ; p ++ ; } p = pixels ; if ( image -> alpha_trait == UndefinedPixelTrait ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } else { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . red ) , q ) ; ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . green ) , q ) ; ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . blue ) , q ) ; SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } image -> colormap = ( PixelInfo * ) RelinquishMagickMemory ( image -> colormap ) ; image -> storage_class = DirectClass ; image -> colors = 0 ; } } if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; ( void ) ReadBlobByte ( image ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pixel_info ) ; ( void ) ResetMagickMemory ( pixels , 0 , pixel_info_length ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10124\n\n```\nCWE-119 static int kill_something_info ( int sig , struct siginfo * info , pid_t pid ) { int ret ; if ( pid > 0 ) { rcu_read_lock ( ) ; ret = kill_pid_info ( sig , info , find_vpid ( pid ) ) ; rcu_read_unlock ( ) ; return ret ; <S2SV_StartBug> } <S2SV_EndBug> read_lock ( & tasklist_lock ) ; if ( pid != - 1 ) { ret = __kill_pgrp_info ( sig , info , pid ? find_vpid ( - pid ) : task_pgrp ( current ) ) ; } else { int retval = 0 , count = 0 ; struct task_struct * p ; for_each_process ( p ) { if ( task_pid_vnr ( p ) > 1 && ! same_thread_group ( p , current ) ) { int err = group_send_sig_info ( sig , info , p ) ; ++ count ; if ( err != - EPERM ) retval = err ; } } ret = count ? retval : - ESRCH ; } read_unlock ( & tasklist_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret ; } if ( pid == INT_MIN ) return - ESRCH ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6419\n\n```\nCWE-119 static void mspack_fmap_free ( void * mem ) { <S2SV_StartBug> free ( mem ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mem ) { if ( mem ) { <S2SV_ModStart> mem ) ; mem = NULL ; } return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11219\n\n```\nCWE-190 static int b_unpack ( lua_State * L ) { Header h ; const char * fmt = luaL_checkstring ( L , 1 ) ; size_t ld ; const char * data = luaL_checklstring ( L , 2 , & ld ) ; <S2SV_StartBug> size_t pos = luaL_optinteger ( L , 3 , 1 ) - 1 ; <S2SV_EndBug> int n = 0 ; defaultoptions ( & h ) ; while ( * fmt ) { int opt = * fmt ++ ; size_t size = optsize ( L , opt , & fmt ) ; pos += gettoalign ( pos , & h , opt , size ) ; <S2SV_StartBug> luaL_argcheck ( L , pos + size <= ld , 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\" ) ; <S2SV_EndBug> luaL_checkstack ( L , 2 , \"too<S2SV_blank>many<S2SV_blank>results\" ) ; switch ( opt ) { case 'b' : case 'B' : case 'h' : case 'H' : case 'l' : case 'L' : case 'T' : case 'i' : case 'I' : { int issigned = islower ( opt ) ; lua_Number res = getinteger ( data + pos , h . endian , issigned , size ) ; lua_pushnumber ( L , res ) ; n ++ ; break ; } case 'x' : { break ; } case 'f' : { float f ; memcpy ( & f , data + pos , size ) ; correctbytes ( ( char * ) & f , sizeof ( f ) , h . endian ) ; lua_pushnumber ( L , f ) ; n ++ ; break ; } case 'd' : { double d ; memcpy ( & d , data + pos , size ) ; correctbytes ( ( char * ) & d , sizeof ( d ) , h . endian ) ; lua_pushnumber ( L , d ) ; n ++ ; break ; } case 'c' : { if ( size == 0 ) { if ( n == 0 || ! lua_isnumber ( L , - 1 ) ) luaL_error ( L , \"format<S2SV_blank>\\'c0\\'<S2SV_blank>needs<S2SV_blank>a<S2SV_blank>previous<S2SV_blank>size\" ) ; size = lua_tonumber ( L , - 1 ) ; lua_pop ( L , 1 ) ; n -- ; luaL_argcheck ( L , size <= ld && pos <= ld - size , 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\" ) ; } lua_pushlstring ( L , data + pos , size ) ; n ++ ; break ; } case 's' : { const char * e = ( const char * ) memchr ( data + pos , '\\\\0' , ld - pos ) ; if ( e == NULL ) luaL_error ( L , \"unfinished<S2SV_blank>string<S2SV_blank>in<S2SV_blank>data\" ) ; size = ( e - ( data + pos ) ) + 1 ; lua_pushlstring ( L , data + pos , size - 1 ) ; n ++ ; break ; } default : controloptions ( L , opt , & fmt , & h ) ; } pos += size ; } lua_pushinteger ( L , pos + 1 ) ; return n + 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 ) ; luaL_argcheck ( L , pos > 0 , 3 , \"offset<S2SV_blank>must<S2SV_blank>be<S2SV_blank>1<S2SV_blank>or<S2SV_blank>greater\" ) ; pos -- <S2SV_ModEnd> ; int n <S2SV_ModStart> ( L , <S2SV_ModEnd> size <= ld <S2SV_ModStart> size <= ld && pos <= ld - size , <S2SV_ModEnd> 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int a2dp_command ( struct a2dp_stream_common * common , char cmd ) { char ack ; DEBUG ( \"A2DP<S2SV_blank>COMMAND<S2SV_blank>%s\" , dump_a2dp_ctrl_event ( cmd ) ) ; <S2SV_StartBug> if ( send ( common -> ctrl_fd , & cmd , 1 , MSG_NOSIGNAL ) == - 1 ) <S2SV_EndBug> { ERROR ( \"cmd<S2SV_blank>failed<S2SV_blank>(%s)\" , strerror ( errno ) ) ; skt_disconnect ( common -> ctrl_fd ) ; common -> ctrl_fd = AUDIO_SKT_DISCONNECTED ; return - 1 ; } if ( a2dp_ctrl_receive ( common , & ack , 1 ) < 0 ) return - 1 ; DEBUG ( \"A2DP<S2SV_blank>COMMAND<S2SV_blank>%s<S2SV_blank>DONE<S2SV_blank>STATUS<S2SV_blank>%d\" , dump_a2dp_ctrl_event ( cmd ) , ack ) ; if ( ack == A2DP_CTRL_ACK_INCALL_FAILURE ) return ack ; if ( ack != A2DP_CTRL_ACK_SUCCESS ) return - 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> 1 , MSG_NOSIGNAL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7946\n\n```\nCWE-416 static int init_items ( struct MACH0_ ( obj_t ) * bin ) { struct load_command lc = { 0 , 0 } ; ut8 loadc [ sizeof ( struct load_command ) ] = { 0 } ; bool is_first_thread = true ; ut64 off = 0LL ; int i , len ; bin -> uuidn = 0 ; bin -> os = 0 ; bin -> has_crypto = 0 ; if ( bin -> hdr . sizeofcmds > bin -> size ) { bprintf ( \"Warning:<S2SV_blank>chopping<S2SV_blank>hdr.sizeofcmds\\\\n\" ) ; bin -> hdr . sizeofcmds = bin -> size - 128 ; } for ( i = 0 , off = sizeof ( struct MACH0_ ( mach_header ) ) ; i < bin -> hdr . ncmds ; i ++ , off += lc . cmdsize ) { if ( off > bin -> size || off + sizeof ( struct load_command ) > bin -> size ) { bprintf ( \"mach0:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds<S2SV_blank>command\\\\n\" ) ; return false ; } len = r_buf_read_at ( bin -> b , off , loadc , sizeof ( struct load_command ) ) ; if ( len < 1 ) { bprintf ( \"Error:<S2SV_blank>read<S2SV_blank>(lc)<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , off ) ; return false ; } lc . cmd = r_read_ble32 ( & loadc [ 0 ] , bin -> big_endian ) ; lc . cmdsize = r_read_ble32 ( & loadc [ 4 ] , bin -> big_endian ) ; if ( lc . cmdsize < 1 || off + lc . cmdsize > bin -> size ) { bprintf ( \"Warning:<S2SV_blank>mach0_header<S2SV_blank>%d<S2SV_blank>=<S2SV_blank>cmdsize<1.\\\\n\" , i ) ; break ; } sdb_num_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.offset\" , i ) , off , 0 ) ; sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.format\" , i ) , \"xd<S2SV_blank>cmd<S2SV_blank>size\" , 0 ) ; switch ( lc . cmd ) { case LC_DATA_IN_CODE : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"data_in_code\" , 0 ) ; break ; case LC_RPATH : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"rpath\" , 0 ) ; break ; case LC_SEGMENT_64 : case LC_SEGMENT : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"segment\" , 0 ) ; bin -> nsegs ++ ; if ( ! parse_segments ( bin , off ) ) { bprintf ( \"error<S2SV_blank>parsing<S2SV_blank>segment\\\\n\" ) ; bin -> nsegs -- ; return false ; } break ; case LC_SYMTAB : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"symtab\" , 0 ) ; if ( ! parse_symtab ( bin , off ) ) { bprintf ( \"error<S2SV_blank>parsing<S2SV_blank>symtab\\\\n\" ) ; return false ; } break ; case LC_DYSYMTAB : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dysymtab\" , 0 ) ; if ( ! parse_dysymtab ( bin , off ) ) { bprintf ( \"error<S2SV_blank>parsing<S2SV_blank>dysymtab\\\\n\" ) ; return false ; } break ; case LC_DYLIB_CODE_SIGN_DRS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dylib_code_sign_drs\" , 0 ) ; break ; case LC_VERSION_MIN_MACOSX : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version_min_macosx\" , 0 ) ; bin -> os = 1 ; break ; case LC_VERSION_MIN_IPHONEOS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version_min_iphoneos\" , 0 ) ; bin -> os = 2 ; break ; case LC_VERSION_MIN_TVOS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version_min_tvos\" , 0 ) ; bin -> os = 4 ; break ; case LC_VERSION_MIN_WATCHOS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version_min_watchos\" , 0 ) ; bin -> os = 3 ; break ; case LC_UUID : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"uuid\" , 0 ) ; { struct uuid_command uc = { 0 } ; if ( off + sizeof ( struct uuid_command ) > bin -> size ) { bprintf ( \"UUID<S2SV_blank>out<S2SV_blank>of<S2SV_blank>obunds\\\\n\" ) ; return false ; } if ( r_buf_fread_at ( bin -> b , off , ( ut8 * ) & uc , \"24c\" , 1 ) != - 1 ) { char key [ 128 ] ; char val [ 128 ] ; snprintf ( key , sizeof ( key ) - 1 , \"uuid.%d\" , bin -> uuidn ++ ) ; r_hex_bin2str ( ( ut8 * ) & uc . uuid , 16 , val ) ; sdb_set ( bin -> kv , key , val , 0 ) ; } } break ; case LC_ENCRYPTION_INFO_64 : case LC_ENCRYPTION_INFO : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"encryption_info\" , 0 ) ; { struct MACH0_ ( encryption_info_command ) eic = { 0 } ; ut8 seic [ sizeof ( struct MACH0_ ( encryption_info_command ) ) ] = { 0 } ; if ( off + sizeof ( struct MACH0_ ( encryption_info_command ) ) > bin -> size ) { bprintf ( \"encryption<S2SV_blank>info<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds\\\\n\" ) ; return false ; } if ( r_buf_read_at ( bin -> b , off , seic , sizeof ( struct MACH0_ ( encryption_info_command ) ) ) != - 1 ) { eic . cmd = r_read_ble32 ( & seic [ 0 ] , bin -> big_endian ) ; eic . cmdsize = r_read_ble32 ( & seic [ 4 ] , bin -> big_endian ) ; eic . cryptoff = r_read_ble32 ( & seic [ 8 ] , bin -> big_endian ) ; eic . cryptsize = r_read_ble32 ( & seic [ 12 ] , bin -> big_endian ) ; eic . cryptid = r_read_ble32 ( & seic [ 16 ] , bin -> big_endian ) ; bin -> has_crypto = eic . cryptid ; sdb_set ( bin -> kv , \"crypto\" , \"true\" , 0 ) ; sdb_num_set ( bin -> kv , \"cryptid\" , eic . cryptid , 0 ) ; sdb_num_set ( bin -> kv , \"cryptoff\" , eic . cryptoff , 0 ) ; sdb_num_set ( bin -> kv , \"cryptsize\" , eic . cryptsize , 0 ) ; sdb_num_set ( bin -> kv , \"cryptheader\" , off , 0 ) ; } } break ; case LC_LOAD_DYLINKER : { sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dylinker\" , 0 ) ; free ( bin -> intrp ) ; bin -> intrp = NULL ; struct dylinker_command dy = { 0 } ; ut8 sdy [ sizeof ( struct dylinker_command ) ] = { 0 } ; if ( off + sizeof ( struct dylinker_command ) > bin -> size ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>parse<S2SV_blank>dylinker<S2SV_blank>command\\\\n\" ) ; return false ; } if ( r_buf_read_at ( bin -> b , off , sdy , sizeof ( struct dylinker_command ) ) == - 1 ) { bprintf ( \"Warning:<S2SV_blank>read<S2SV_blank>(LC_DYLD_INFO)<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , off ) ; } else { dy . cmd = r_read_ble32 ( & sdy [ 0 ] , bin -> big_endian ) ; dy . cmdsize = r_read_ble32 ( & sdy [ 4 ] , bin -> big_endian ) ; dy . name = r_read_ble32 ( & sdy [ 8 ] , bin -> big_endian ) ; int len = dy . cmdsize ; char * buf = malloc ( len + 1 ) ; if ( buf ) { r_buf_read_at ( bin -> b , off + 0xc , ( ut8 * ) buf , len ) ; buf [ len ] = 0 ; free ( bin -> intrp ) ; bin -> intrp = buf ; } } } break ; case LC_MAIN : { struct { ut64 eo ; ut64 ss ; } ep = { 0 } ; ut8 sep [ 2 * sizeof ( ut64 ) ] = { 0 } ; sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"main\" , 0 ) ; if ( ! is_first_thread ) { bprintf ( \"Error:<S2SV_blank>LC_MAIN<S2SV_blank>with<S2SV_blank>other<S2SV_blank>threads\\\\n\" ) ; return false ; } if ( off + 8 > bin -> size || off + sizeof ( ep ) > bin -> size ) { bprintf ( \"invalid<S2SV_blank>command<S2SV_blank>size<S2SV_blank>for<S2SV_blank>main\\\\n\" ) ; return false ; } r_buf_read_at ( bin -> b , off + 8 , sep , 2 * sizeof ( ut64 ) ) ; ep . eo = r_read_ble64 ( & sep [ 0 ] , bin -> big_endian ) ; ep . ss = r_read_ble64 ( & sep [ 8 ] , bin -> big_endian ) ; bin -> entry = ep . eo ; bin -> main_cmd = lc ; sdb_num_set ( bin -> kv , \"mach0.entry.offset\" , off + 8 , 0 ) ; sdb_num_set ( bin -> kv , \"stacksize\" , ep . ss , 0 ) ; is_first_thread = false ; } break ; case LC_UNIXTHREAD : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"unixthread\" , 0 ) ; if ( ! is_first_thread ) { bprintf ( \"Error:<S2SV_blank>LC_UNIXTHREAD<S2SV_blank>with<S2SV_blank>other<S2SV_blank>threads\\\\n\" ) ; return false ; } case LC_THREAD : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"thread\" , 0 ) ; if ( ! parse_thread ( bin , & lc , off , is_first_thread ) ) { bprintf ( \"Cannot<S2SV_blank>parse<S2SV_blank>thread\\\\n\" ) ; return false ; } is_first_thread = false ; break ; case LC_LOAD_DYLIB : case LC_LOAD_WEAK_DYLIB : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"load_dylib\" , 0 ) ; bin -> nlibs ++ ; if ( ! parse_dylib ( bin , off ) ) { bprintf ( \"Cannot<S2SV_blank>parse<S2SV_blank>dylib\\\\n\" ) ; bin -> nlibs -- ; return false ; } break ; case LC_DYLD_INFO : case LC_DYLD_INFO_ONLY : { ut8 dyldi [ sizeof ( struct dyld_info_command ) ] = { 0 } ; sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dyld_info\" , 0 ) ; <S2SV_StartBug> bin -> dyld_info = malloc ( sizeof ( struct dyld_info_command ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( off + sizeof ( struct dyld_info_command ) > bin -> size ) { <S2SV_EndBug> bprintf ( \"Cannot<S2SV_blank>parse<S2SV_blank>dyldinfo\\\\n\" ) ; <S2SV_StartBug> free ( bin -> dyld_info ) ; <S2SV_EndBug> return false ; } if ( r_buf_read_at ( bin -> b , off , dyldi , sizeof ( struct dyld_info_command ) ) == - 1 ) { free ( bin -> dyld_info ) ; bin -> dyld_info = NULL ; bprintf ( \"Error:<S2SV_blank>read<S2SV_blank>(LC_DYLD_INFO)<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , off ) ; } else { bin -> dyld_info -> cmd = r_read_ble32 ( & dyldi [ 0 ] , bin -> big_endian ) ; bin -> dyld_info -> cmdsize = r_read_ble32 ( & dyldi [ 4 ] , bin -> big_endian ) ; bin -> dyld_info -> rebase_off = r_read_ble32 ( & dyldi [ 8 ] , bin -> big_endian ) ; bin -> dyld_info -> rebase_size = r_read_ble32 ( & dyldi [ 12 ] , bin -> big_endian ) ; bin -> dyld_info -> bind_off = r_read_ble32 ( & dyldi [ 16 ] , bin -> big_endian ) ; bin -> dyld_info -> bind_size = r_read_ble32 ( & dyldi [ 20 ] , bin -> big_endian ) ; bin -> dyld_info -> weak_bind_off = r_read_ble32 ( & dyldi [ 24 ] , bin -> big_endian ) ; bin -> dyld_info -> weak_bind_size = r_read_ble32 ( & dyldi [ 28 ] , bin -> big_endian ) ; bin -> dyld_info -> lazy_bind_off = r_read_ble32 ( & dyldi [ 32 ] , bin -> big_endian ) ; bin -> dyld_info -> lazy_bind_size = r_read_ble32 ( & dyldi [ 36 ] , bin -> big_endian ) ; bin -> dyld_info -> export_off = r_read_ble32 ( & dyldi [ 40 ] , bin -> big_endian ) ; bin -> dyld_info -> export_size = r_read_ble32 ( & dyldi [ 44 ] , bin -> big_endian ) ; } } <S2SV_StartBug> break ; <S2SV_EndBug> case LC_CODE_SIGNATURE : parse_signature ( bin , off ) ; sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"signature\" , 0 ) ; break ; case LC_SOURCE_VERSION : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"version\" , 0 ) ; break ; case LC_SEGMENT_SPLIT_INFO : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"split_info\" , 0 ) ; break ; case LC_FUNCTION_STARTS : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"function_starts\" , 0 ) ; if ( ! parse_function_starts ( bin , off ) ) { bprintf ( \"Cannot<S2SV_blank>parse<S2SV_blank>LC_FUNCTION_STARTS\\\\n\" ) ; } break ; case LC_REEXPORT_DYLIB : sdb_set ( bin -> kv , sdb_fmt ( 0 , \"mach0_cmd_%d.cmd\" , i ) , \"dylib\" , 0 ) ; break ; default : break ; } } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> dyld_info = calloc ( 1 , <S2SV_ModEnd> sizeof ( struct <S2SV_ModStart> ; if ( bin -> dyld_info ) { if ( <S2SV_ModStart> \"Cannot<S2SV_blank>parse<S2SV_blank>dyldinfo\\\\n\" ) ; R_FREE <S2SV_ModEnd> ( bin -> <S2SV_ModStart> ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 void Con_Dump_f ( void ) { int l , x , i ; short * line ; fileHandle_t f ; int bufferlen ; char * buffer ; char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { Com_Printf ( \"usage:<S2SV_blank>condump<S2SV_blank><filename>\\\\n\" ) ; return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; <S2SV_StartBug> COM_DefaultExtension ( filename , sizeof ( filename ) , \".txt\" ) ; <S2SV_EndBug> f = FS_FOpenFileWrite ( filename ) ; if ( ! f ) { Com_Printf ( \"ERROR:<S2SV_blank>couldn\\'t<S2SV_blank>open<S2SV_blank>%s.\\\\n\" , filename ) ; return ; } Com_Printf ( \"Dumped<S2SV_blank>console<S2SV_blank>text<S2SV_blank>to<S2SV_blank>%s.\\\\n\" , filename ) ; for ( l = con . current - con . totallines + 1 ; l <= con . current ; l ++ ) { line = con . text + ( l % con . totallines ) * con . linewidth ; for ( x = 0 ; x < con . linewidth ; x ++ ) if ( ( line [ x ] & 0xff ) != '<S2SV_blank>' ) break ; if ( x != con . linewidth ) break ; } # ifdef _WIN32 bufferlen = con . linewidth + 3 * sizeof ( char ) ; # else bufferlen = con . linewidth + 2 * sizeof ( char ) ; # endif buffer = Hunk_AllocateTempMemory ( bufferlen ) ; buffer [ bufferlen - 1 ] = 0 ; for ( ; l <= con . current ; l ++ ) { line = con . text + ( l % con . totallines ) * con . linewidth ; for ( i = 0 ; i < con . linewidth ; i ++ ) buffer [ i ] = line [ i ] & 0xff ; for ( x = con . linewidth - 1 ; x >= 0 ; x -- ) { if ( buffer [ x ] == '<S2SV_blank>' ) buffer [ x ] = 0 ; else break ; } # ifdef _WIN32 Q_strcat ( buffer , bufferlen , \"\\\\r\\\\n\" ) ; # else Q_strcat ( buffer , bufferlen , \"\\\\n\" ) ; # endif FS_Write ( buffer , strlen ( buffer ) , f ) ; } Hunk_FreeTempMemory ( buffer ) ; FS_FCloseFile ( f ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \".txt\" ) ; if ( ! COM_CompareExtension ( filename , \".txt\" ) ) { Com_Printf ( \"Con_Dump_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".txt\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_dequant_idct_add_y_block_c ( short * q , short * dq , unsigned char * dst , int stride , char * eobs ) { int i , j ; for ( i = 0 ; i < 4 ; i ++ ) { for ( j = 0 ; j < 4 ; j ++ ) { if ( * eobs ++ > 1 ) vp8_dequant_idct_add_c ( q , dq , dst , stride ) ; else { vp8_dc_only_idct_add_c ( q [ 0 ] * dq [ 0 ] , dst , stride , dst , stride ) ; <S2SV_StartBug> vpx_memset ( q , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } q += 16 ; dst += 4 ; } dst += 4 * stride - 16 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7446\n\n```\nCWE-000 static int unix_dgram_connect ( struct socket * sock , struct sockaddr * addr , int alen , int flags ) { struct sock * sk = sock -> sk ; struct net * net = sock_net ( sk ) ; struct sockaddr_un * sunaddr = ( struct sockaddr_un * ) addr ; struct sock * other ; unsigned int hash ; int err ; if ( addr -> sa_family != AF_UNSPEC ) { err = unix_mkname ( sunaddr , alen , & hash ) ; if ( err < 0 ) goto out ; alen = err ; if ( test_bit ( SOCK_PASSCRED , & sock -> flags ) && ! unix_sk ( sk ) -> addr && ( err = unix_autobind ( sock ) ) != 0 ) goto out ; restart : other = unix_find_other ( net , sunaddr , alen , sock -> type , hash , & err ) ; if ( ! other ) goto out ; unix_state_double_lock ( sk , other ) ; if ( sock_flag ( other , SOCK_DEAD ) ) { unix_state_double_unlock ( sk , other ) ; sock_put ( other ) ; goto restart ; } err = - EPERM ; if ( ! unix_may_send ( sk , other ) ) goto out_unlock ; err = security_unix_may_send ( sk -> sk_socket , other -> sk_socket ) ; if ( err ) goto out_unlock ; } else { other = NULL ; unix_state_double_lock ( sk , other ) ; } if ( unix_peer ( sk ) ) { struct sock * old_peer = unix_peer ( sk ) ; unix_peer ( sk ) = other ; <S2SV_StartBug> unix_state_double_unlock ( sk , other ) ; <S2SV_EndBug> if ( other != old_peer ) unix_dgram_disconnected ( sk , old_peer ) ; sock_put ( old_peer ) ; } else { unix_peer ( sk ) = other ; unix_state_double_unlock ( sk , other ) ; } return 0 ; out_unlock : unix_state_double_unlock ( sk , other ) ; sock_put ( other ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = other ; unix_dgram_peer_wake_disconnect_wakeup ( sk , old_peer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 <S2SV_StartBug> void Huff_offsetReceive ( node_t * node , int * ch , byte * fin , int * offset ) { <S2SV_EndBug> bloc = * offset ; <S2SV_StartBug> while ( node && node -> symbol == INTERNAL_NODE ) { <S2SV_EndBug> if ( get_bit ( fin ) ) { node = node -> right ; } else { node = node -> left ; } } if ( ! node ) { * ch = 0 ; return ; } * ch = node -> symbol ; * offset = bloc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int * offset , int maxoffset <S2SV_ModStart> INTERNAL_NODE ) { if ( bloc >= maxoffset ) { * ch = 0 ; * offset = maxoffset + 1 ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5352\n\n```\nCWE-000 OM_uint32 kg_unseal_iov ( OM_uint32 * minor_status , gss_ctx_id_t context_handle , int * conf_state , gss_qop_t * qop_state , gss_iov_buffer_desc * iov , int iov_count , int toktype ) { krb5_gss_ctx_id_rec * ctx ; OM_uint32 code ; ctx = ( krb5_gss_ctx_id_rec * ) context_handle ; <S2SV_StartBug> if ( ! ctx -> established ) { <S2SV_EndBug> * minor_status = KG_CTX_INCOMPLETE ; return GSS_S_NO_CONTEXT ; } if ( kg_locate_iov ( iov , iov_count , GSS_IOV_BUFFER_TYPE_STREAM ) != NULL ) { code = kg_unseal_stream_iov ( minor_status , ctx , conf_state , qop_state , iov , iov_count , toktype ) ; } else { code = kg_unseal_iov_token ( minor_status , ctx , conf_state , qop_state , iov , iov_count , toktype ) ; } return code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ctx -> terminated ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4440\n\n```\nCWE-264 static __init int hardware_setup ( void ) { int r = - ENOMEM , i , msr ; rdmsrl_safe ( MSR_EFER , & host_efer ) ; for ( i = 0 ; i < ARRAY_SIZE ( vmx_msr_index ) ; ++ i ) kvm_define_shared_msr ( i , vmx_msr_index [ i ] ) ; vmx_io_bitmap_a = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_io_bitmap_a ) return r ; vmx_io_bitmap_b = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_io_bitmap_b ) goto out ; vmx_msr_bitmap_legacy = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_msr_bitmap_legacy ) goto out1 ; vmx_msr_bitmap_legacy_x2apic = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_msr_bitmap_legacy_x2apic ) goto out2 ; vmx_msr_bitmap_longmode = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_msr_bitmap_longmode ) goto out3 ; vmx_msr_bitmap_longmode_x2apic = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_msr_bitmap_longmode_x2apic ) goto out4 ; if ( nested ) { vmx_msr_bitmap_nested = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_msr_bitmap_nested ) goto out5 ; } vmx_vmread_bitmap = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_vmread_bitmap ) goto out6 ; vmx_vmwrite_bitmap = ( unsigned long * ) __get_free_page ( GFP_KERNEL ) ; if ( ! vmx_vmwrite_bitmap ) goto out7 ; memset ( vmx_vmread_bitmap , 0xff , PAGE_SIZE ) ; memset ( vmx_vmwrite_bitmap , 0xff , PAGE_SIZE ) ; memset ( vmx_io_bitmap_a , 0xff , PAGE_SIZE ) ; clear_bit ( 0x80 , vmx_io_bitmap_a ) ; memset ( vmx_io_bitmap_b , 0xff , PAGE_SIZE ) ; memset ( vmx_msr_bitmap_legacy , 0xff , PAGE_SIZE ) ; memset ( vmx_msr_bitmap_longmode , 0xff , PAGE_SIZE ) ; if ( nested ) memset ( vmx_msr_bitmap_nested , 0xff , PAGE_SIZE ) ; if ( setup_vmcs_config ( & vmcs_config ) < 0 ) { r = - EIO ; goto out8 ; } if ( boot_cpu_has ( X86_FEATURE_NX ) ) kvm_enable_efer_bits ( EFER_NX ) ; if ( ! cpu_has_vmx_vpid ( ) ) enable_vpid = 0 ; if ( ! cpu_has_vmx_shadow_vmcs ( ) ) enable_shadow_vmcs = 0 ; if ( enable_shadow_vmcs ) init_vmcs_shadow_fields ( ) ; if ( ! cpu_has_vmx_ept ( ) || ! cpu_has_vmx_ept_4levels ( ) ) { enable_ept = 0 ; enable_unrestricted_guest = 0 ; enable_ept_ad_bits = 0 ; } if ( ! cpu_has_vmx_ept_ad_bits ( ) ) enable_ept_ad_bits = 0 ; if ( ! cpu_has_vmx_unrestricted_guest ( ) ) enable_unrestricted_guest = 0 ; if ( ! cpu_has_vmx_flexpriority ( ) ) flexpriority_enabled = 0 ; if ( ! flexpriority_enabled ) kvm_x86_ops -> set_apic_access_page_addr = NULL ; if ( ! cpu_has_vmx_tpr_shadow ( ) ) kvm_x86_ops -> update_cr8_intercept = NULL ; if ( enable_ept && ! cpu_has_vmx_ept_2m_page ( ) ) kvm_disable_largepages ( ) ; if ( ! cpu_has_vmx_ple ( ) ) ple_gap = 0 ; if ( ! cpu_has_vmx_apicv ( ) ) enable_apicv = 0 ; if ( cpu_has_vmx_tsc_scaling ( ) ) { kvm_has_tsc_control = true ; kvm_max_tsc_scaling_ratio = KVM_VMX_TSC_MULTIPLIER_MAX ; kvm_tsc_scaling_ratio_frac_bits = 48 ; } vmx_disable_intercept_for_msr ( MSR_FS_BASE , false ) ; vmx_disable_intercept_for_msr ( MSR_GS_BASE , false ) ; vmx_disable_intercept_for_msr ( MSR_KERNEL_GS_BASE , true ) ; vmx_disable_intercept_for_msr ( MSR_IA32_SYSENTER_CS , false ) ; vmx_disable_intercept_for_msr ( MSR_IA32_SYSENTER_ESP , false ) ; vmx_disable_intercept_for_msr ( MSR_IA32_SYSENTER_EIP , false ) ; vmx_disable_intercept_for_msr ( MSR_IA32_BNDCFGS , true ) ; memcpy ( vmx_msr_bitmap_legacy_x2apic , vmx_msr_bitmap_legacy , PAGE_SIZE ) ; memcpy ( vmx_msr_bitmap_longmode_x2apic , vmx_msr_bitmap_longmode , PAGE_SIZE ) ; set_bit ( 0 , vmx_vpid_bitmap ) ; <S2SV_StartBug> if ( enable_apicv ) { <S2SV_EndBug> for ( msr = 0x800 ; msr <= 0x8ff ; msr ++ ) vmx_disable_intercept_msr_read_x2apic ( msr ) ; vmx_enable_intercept_msr_read_x2apic ( 0x802 ) ; vmx_enable_intercept_msr_read_x2apic ( 0x839 ) ; vmx_disable_intercept_msr_write_x2apic ( 0x808 ) ; vmx_disable_intercept_msr_write_x2apic ( 0x80b ) ; vmx_disable_intercept_msr_write_x2apic ( 0x83f ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( enable_ept ) { kvm_mmu_set_mask_ptes ( 0ull , ( enable_ept_ad_bits ) ? VMX_EPT_ACCESS_BIT : 0ull , ( enable_ept_ad_bits ) ? VMX_EPT_DIRTY_BIT : 0ull , 0ull , VMX_EPT_EXECUTABLE_MASK ) ; ept_set_mmio_spte_mask ( ) ; kvm_enable_tdp ( ) ; } else kvm_disable_tdp ( ) ; update_ple_window_actual_max ( ) ; if ( ! enable_ept || ! enable_ept_ad_bits || ! cpu_has_vmx_pml ( ) ) enable_pml = 0 ; if ( ! enable_pml ) { kvm_x86_ops -> slot_enable_log_dirty = NULL ; kvm_x86_ops -> slot_disable_log_dirty = NULL ; kvm_x86_ops -> flush_log_dirty = NULL ; kvm_x86_ops -> enable_log_dirty_pt_masked = NULL ; } kvm_set_posted_intr_wakeup_handler ( wakeup_handler ) ; return alloc_kvm_area ( ) ; out8 : free_page ( ( unsigned long ) vmx_vmwrite_bitmap ) ; out7 : free_page ( ( unsigned long ) vmx_vmread_bitmap ) ; out6 : if ( nested ) free_page ( ( unsigned long ) vmx_msr_bitmap_nested ) ; out5 : free_page ( ( unsigned long ) vmx_msr_bitmap_longmode_x2apic ) ; out4 : free_page ( ( unsigned long ) vmx_msr_bitmap_longmode ) ; out3 : free_page ( ( unsigned long ) vmx_msr_bitmap_legacy_x2apic ) ; out2 : free_page ( ( unsigned long ) vmx_msr_bitmap_legacy ) ; out1 : free_page ( ( unsigned long ) vmx_io_bitmap_b ) ; out : free_page ( ( unsigned long ) vmx_io_bitmap_a ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vmx_vpid_bitmap ) ; <S2SV_ModEnd> for ( msr <S2SV_ModStart> 0x83f ) ; <S2SV_ModEnd> if ( enable_ept\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void write_ref_frames ( const VP9_COMP * cpi , vp9_writer * w ) { <S2SV_EndBug> const VP9_COMMON * const cm = & cpi -> common ; const MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; const MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; const int is_compound = has_second_ref ( mbmi ) ; const int segment_id = mbmi -> segment_id ; <S2SV_StartBug> if ( vp9_segfeature_active ( & cm -> seg , segment_id , SEG_LVL_REF_FRAME ) ) { <S2SV_EndBug> <S2SV_StartBug> assert ( ! is_compound ) ; <S2SV_EndBug> assert ( mbmi -> ref_frame [ 0 ] == vp9_get_segdata ( & cm -> seg , segment_id , SEG_LVL_REF_FRAME ) ) ; } else { <S2SV_StartBug> if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) { <S2SV_EndBug> vp9_write ( w , is_compound , vp9_get_reference_mode_prob ( cm , xd ) ) ; } else { assert ( ! is_compound == ( cm -> reference_mode == SINGLE_REFERENCE ) ) ; } if ( is_compound ) { <S2SV_StartBug> vp9_write ( w , mbmi -> ref_frame [ 0 ] == GOLDEN_FRAME , <S2SV_EndBug> vp9_get_pred_prob_comp_ref_p ( cm , xd ) ) ; } else { const int bit0 = mbmi -> ref_frame [ 0 ] != LAST_FRAME ; <S2SV_StartBug> vp9_write ( w , bit0 , vp9_get_pred_prob_single_ref_p1 ( cm , xd ) ) ; <S2SV_EndBug> if ( bit0 ) { const int bit1 = mbmi -> ref_frame [ 0 ] != GOLDEN_FRAME ; <S2SV_StartBug> vp9_write ( w , bit1 , vp9_get_pred_prob_single_ref_p2 ( cm , xd ) ) ; <S2SV_EndBug> } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> write_ref_frames ( const VP9_COMMON * cm , const MACROBLOCKD * xd , vpx_writer * w ) { const MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; const int is_compound = has_second_ref ( mbmi ) ; const int segment_id = mbmi -> segment_id ; if ( segfeature_active ( & cm -> seg , segment_id , SEG_LVL_REF_FRAME ) ) { assert ( ! is_compound ) ; assert ( mbmi -> ref_frame [ 0 ] == get_segdata ( & <S2SV_ModEnd> cm -> seg <S2SV_ModStart> SEG_LVL_REF_FRAME ) ) ; } else { if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) { vpx_write ( w , is_compound , vp9_get_reference_mode_prob ( cm , xd ) ) ; } else <S2SV_ModStart> ( ! is_compound == <S2SV_ModEnd> ( cm -> <S2SV_ModStart> -> reference_mode == <S2SV_ModEnd> SINGLE_REFERENCE ) ) <S2SV_ModStart> is_compound ) { vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> != LAST_FRAME ; vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> != GOLDEN_FRAME ; vpx_write <S2SV_ModEnd> ( w ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int do_check ( struct bpf_verifier_env * env ) { struct bpf_verifier_state * state ; struct bpf_insn * insns = env -> prog -> insnsi ; struct bpf_reg_state * regs ; int insn_cnt = env -> prog -> len , i ; int insn_processed = 0 ; bool do_print_state = false ; env -> prev_linfo = NULL ; state = kzalloc ( sizeof ( struct bpf_verifier_state ) , GFP_KERNEL ) ; if ( ! state ) return - ENOMEM ; state -> curframe = 0 ; <S2SV_StartBug> state -> frame [ 0 ] = kzalloc ( sizeof ( struct bpf_func_state ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! state -> frame [ 0 ] ) { kfree ( state ) ; return - ENOMEM ; } env -> cur_state = state ; init_func_state ( env , state -> frame [ 0 ] , BPF_MAIN_FUNC , 0 , 0 ) ; for ( ; ; ) { struct bpf_insn * insn ; u8 class ; int err ; if ( env -> insn_idx >= insn_cnt ) { verbose ( env , \"invalid<S2SV_blank>insn<S2SV_blank>idx<S2SV_blank>%d<S2SV_blank>insn_cnt<S2SV_blank>%d\\\\n\" , env -> insn_idx , insn_cnt ) ; return - EFAULT ; } insn = & insns [ env -> insn_idx ] ; class = BPF_CLASS ( insn -> code ) ; if ( ++ insn_processed > BPF_COMPLEXITY_LIMIT_INSNS ) { verbose ( env , \"BPF<S2SV_blank>program<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.<S2SV_blank>Processed<S2SV_blank>%d<S2SV_blank>insn\\\\n\" , insn_processed ) ; return - E2BIG ; } err = is_state_visited ( env , env -> insn_idx ) ; if ( err < 0 ) return err ; if ( err == 1 ) { if ( env -> log . level ) { if ( do_print_state ) <S2SV_StartBug> verbose ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>safe\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> env -> prev_insn_idx , env -> insn_idx ) ; <S2SV_EndBug> else verbose ( env , \"%d:<S2SV_blank>safe\\\\n\" , env -> insn_idx ) ; } goto process_bpf_exit ; } if ( signal_pending ( current ) ) return - EAGAIN ; if ( need_resched ( ) ) cond_resched ( ) ; if ( env -> log . level > 1 || ( env -> log . level && do_print_state ) ) { if ( env -> log . level > 1 ) verbose ( env , \"%d:\" , env -> insn_idx ) ; else <S2SV_StartBug> verbose ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:\" , <S2SV_EndBug> <S2SV_StartBug> env -> prev_insn_idx , env -> insn_idx ) ; <S2SV_EndBug> print_verifier_state ( env , state -> frame [ state -> curframe ] ) ; do_print_state = false ; } if ( env -> log . level ) { const struct bpf_insn_cbs cbs = { . cb_print = verbose , . private_data = env , } ; verbose_linfo ( env , env -> insn_idx , \";<S2SV_blank>\" ) ; verbose ( env , \"%d:<S2SV_blank>\" , env -> insn_idx ) ; print_bpf_insn ( & cbs , insn , env -> allow_ptr_leaks ) ; } if ( bpf_prog_is_dev_bound ( env -> prog -> aux ) ) { err = bpf_prog_offload_verify_insn ( env , env -> insn_idx , env -> prev_insn_idx ) ; if ( err ) return err ; } regs = cur_regs ( env ) ; env -> insn_aux_data [ env -> insn_idx ] . seen = true ; if ( class == BPF_ALU || class == BPF_ALU64 ) { err = check_alu_op ( env , insn ) ; if ( err ) return err ; } else if ( class == BPF_LDX ) { enum bpf_reg_type * prev_src_type , src_reg_type ; err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( env , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; src_reg_type = regs [ insn -> src_reg ] . type ; err = check_mem_access ( env , env -> insn_idx , insn -> src_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_READ , insn -> dst_reg , false ) ; if ( err ) return err ; prev_src_type = & env -> insn_aux_data [ env -> insn_idx ] . ptr_type ; if ( * prev_src_type == NOT_INIT ) { * prev_src_type = src_reg_type ; } else if ( reg_type_mismatch ( src_reg_type , * prev_src_type ) ) { verbose ( env , \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_STX ) { enum bpf_reg_type * prev_dst_type , dst_reg_type ; if ( BPF_MODE ( insn -> code ) == BPF_XADD ) { err = check_xadd ( env , env -> insn_idx , insn ) ; if ( err ) return err ; env -> insn_idx ++ ; continue ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; dst_reg_type = regs [ insn -> dst_reg ] . type ; err = check_mem_access ( env , env -> insn_idx , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , insn -> src_reg , false ) ; if ( err ) return err ; prev_dst_type = & env -> insn_aux_data [ env -> insn_idx ] . ptr_type ; if ( * prev_dst_type == NOT_INIT ) { * prev_dst_type = dst_reg_type ; } else if ( reg_type_mismatch ( dst_reg_type , * prev_dst_type ) ) { verbose ( env , \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_ST ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> src_reg != BPF_REG_0 ) { verbose ( env , \"BPF_ST<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( is_ctx_reg ( env , insn -> dst_reg ) ) { verbose ( env , \"BPF_ST<S2SV_blank>stores<S2SV_blank>into<S2SV_blank>R%d<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed\\\\n\" , insn -> dst_reg , reg_type_str [ reg_state ( env , insn -> dst_reg ) -> type ] ) ; return - EACCES ; } err = check_mem_access ( env , env -> insn_idx , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , - 1 , false ) ; if ( err ) return err ; } else if ( class == BPF_JMP ) { u8 opcode = BPF_OP ( insn -> code ) ; if ( opcode == BPF_CALL ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> off != 0 || ( insn -> src_reg != BPF_REG_0 && insn -> src_reg != BPF_PSEUDO_CALL ) || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_CALL<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( insn -> src_reg == BPF_PSEUDO_CALL ) err = check_func_call ( env , insn , & env -> insn_idx ) ; else err = check_helper_call ( env , insn -> imm , env -> insn_idx ) ; if ( err ) return err ; } else if ( opcode == BPF_JA ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_JA<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } env -> insn_idx += insn -> off + 1 ; continue ; } else if ( opcode == BPF_EXIT ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_EXIT<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( state -> curframe ) { env -> prev_insn_idx = env -> insn_idx ; err = prepare_func_exit ( env , & env -> insn_idx ) ; if ( err ) return err ; do_print_state = true ; continue ; } err = check_reference_leak ( env ) ; if ( err ) return err ; err = check_reg_arg ( env , BPF_REG_0 , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , BPF_REG_0 ) ) { verbose ( env , \"R0<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>as<S2SV_blank>return<S2SV_blank>value\\\\n\" ) ; return - EACCES ; } err = check_return_code ( env ) ; if ( err ) return err ; process_bpf_exit : err = pop_stack ( env , & env -> prev_insn_idx , & env -> insn_idx ) ; if ( err < 0 ) { if ( err != - ENOENT ) return err ; break ; } else { do_print_state = true ; continue ; } } else { err = check_cond_jmp_op ( env , insn , & env -> insn_idx ) ; if ( err ) return err ; } } else if ( class == BPF_LD ) { u8 mode = BPF_MODE ( insn -> code ) ; if ( mode == BPF_ABS || mode == BPF_IND ) { err = check_ld_abs ( env , insn ) ; if ( err ) return err ; } else if ( mode == BPF_IMM ) { err = check_ld_imm ( env , insn ) ; if ( err ) return err ; env -> insn_idx ++ ; env -> insn_aux_data [ env -> insn_idx ] . seen = true ; } else { verbose ( env , \"invalid<S2SV_blank>BPF_LD<S2SV_blank>mode\\\\n\" ) ; return - EINVAL ; } } else { verbose ( env , \"unknown<S2SV_blank>insn<S2SV_blank>class<S2SV_blank>%d\\\\n\" , class ) ; return - EINVAL ; } env -> insn_idx ++ ; } verbose ( env , \"processed<S2SV_blank>%d<S2SV_blank>insns<S2SV_blank>(limit<S2SV_blank>%d),<S2SV_blank>stack<S2SV_blank>depth<S2SV_blank>\" , insn_processed , BPF_COMPLEXITY_LIMIT_INSNS ) ; for ( i = 0 ; i < env -> subprog_cnt ; i ++ ) { u32 depth = env -> subprog_info [ i ] . stack_depth ; verbose ( env , \"%d\" , depth ) ; if ( i + 1 < env -> subprog_cnt ) verbose ( env , \"+\" ) ; } verbose ( env , \"\\\\n\" ) ; env -> prog -> aux -> stack_depth = env -> subprog_info [ 0 ] . stack_depth ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; state -> speculative = false ; state -> <S2SV_ModStart> ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d%s:<S2SV_blank>safe\\\\n\" <S2SV_ModEnd> , env -> <S2SV_ModStart> env -> insn_idx , env -> cur_state -> speculative ? \"<S2SV_blank>(speculative<S2SV_blank>execution)\" : \"\" <S2SV_ModStart> ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d%s:\" <S2SV_ModEnd> , env -> <S2SV_ModStart> env -> insn_idx , env -> cur_state -> speculative ? \"<S2SV_blank>(speculative<S2SV_blank>execution)\" : \"\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16532\n\n```\nCWE-476 static int get_endpoints ( struct usbtest_dev * dev , struct usb_interface * intf ) { int tmp ; struct usb_host_interface * alt ; struct usb_host_endpoint * in , * out ; struct usb_host_endpoint * iso_in , * iso_out ; struct usb_host_endpoint * int_in , * int_out ; struct usb_device * udev ; for ( tmp = 0 ; tmp < intf -> num_altsetting ; tmp ++ ) { unsigned ep ; in = out = NULL ; iso_in = iso_out = NULL ; int_in = int_out = NULL ; alt = intf -> altsetting + tmp ; if ( override_alt >= 0 && override_alt != alt -> desc . bAlternateSetting ) continue ; for ( ep = 0 ; ep < alt -> desc . bNumEndpoints ; ep ++ ) { struct usb_host_endpoint * e ; int edi ; e = alt -> endpoint + ep ; edi = usb_endpoint_dir_in ( & e -> desc ) ; switch ( usb_endpoint_type ( & e -> desc ) ) { case USB_ENDPOINT_XFER_BULK : endpoint_update ( edi , & in , & out , e ) ; continue ; case USB_ENDPOINT_XFER_INT : if ( dev -> info -> intr ) endpoint_update ( edi , & int_in , & int_out , e ) ; continue ; case USB_ENDPOINT_XFER_ISOC : if ( dev -> info -> iso ) endpoint_update ( edi , & iso_in , & iso_out , e ) ; default : continue ; } } if ( ( in && out ) || iso_in || iso_out || int_in || int_out ) goto found ; } return - EINVAL ; found : udev = testdev_to_usbdev ( dev ) ; dev -> info -> alt = alt -> desc . bAlternateSetting ; if ( alt -> desc . bAlternateSetting != 0 ) { tmp = usb_set_interface ( udev , alt -> desc . bInterfaceNumber , alt -> desc . bAlternateSetting ) ; if ( tmp < 0 ) return tmp ; } <S2SV_StartBug> if ( in ) { <S2SV_EndBug> dev -> in_pipe = usb_rcvbulkpipe ( udev , in -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; <S2SV_StartBug> dev -> out_pipe = usb_sndbulkpipe ( udev , <S2SV_EndBug> out -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( iso_in ) { dev -> iso_in = & iso_in -> desc ; dev -> in_iso_pipe = usb_rcvisocpipe ( udev , iso_in -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; } if ( iso_out ) { dev -> iso_out = & iso_out -> desc ; dev -> out_iso_pipe = usb_sndisocpipe ( udev , iso_out -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; } if ( int_in ) { dev -> int_in = & int_in -> desc ; dev -> in_int_pipe = usb_rcvintpipe ( udev , int_in -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; } if ( int_out ) { dev -> int_out = & int_out -> desc ; dev -> out_int_pipe = usb_sndintpipe ( udev , int_out -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( in ) <S2SV_ModEnd> dev -> in_pipe <S2SV_ModStart> USB_ENDPOINT_NUMBER_MASK ) ; if ( out ) <S2SV_ModStart> USB_ENDPOINT_NUMBER_MASK ) ; <S2SV_ModEnd> if ( iso_in\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int l2tp_ip_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; size_t copied = 0 ; int err = - EOPNOTSUPP ; struct sockaddr_in * sin = ( struct sockaddr_in * ) msg -> msg_name ; struct sk_buff * skb ; if ( flags & MSG_OOB ) <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( * sin ) ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_timestamp ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; sin -> sin_port = 0 ; memset ( & sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; if ( flags & MSG_TRUNC ) copied = skb -> len ; done : skb_free_datagram ( sk , skb ) ; out : return err ? err : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto out <S2SV_ModEnd> ; skb = <S2SV_ModStart> ) ) ; * addr_len = sizeof ( * sin ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2479\n\n```\nCWE-399 int hugepage_madvise ( struct vm_area_struct * vma , unsigned long * vm_flags , int advice ) { switch ( advice ) { case MADV_HUGEPAGE : if ( * vm_flags & ( VM_HUGEPAGE | <S2SV_StartBug> VM_SHARED | VM_MAYSHARE | <S2SV_EndBug> VM_PFNMAP | VM_IO | VM_DONTEXPAND | VM_RESERVED | VM_HUGETLB | VM_INSERTPAGE | VM_MIXEDMAP | VM_SAO ) ) return - EINVAL ; * vm_flags &= ~ VM_NOHUGEPAGE ; * vm_flags |= VM_HUGEPAGE ; if ( unlikely ( khugepaged_enter_vma_merge ( vma ) ) ) return - ENOMEM ; break ; case MADV_NOHUGEPAGE : if ( * vm_flags & ( VM_NOHUGEPAGE | <S2SV_StartBug> VM_SHARED | VM_MAYSHARE | <S2SV_EndBug> VM_PFNMAP | VM_IO | VM_DONTEXPAND | VM_RESERVED | VM_HUGETLB | VM_INSERTPAGE | VM_MIXEDMAP | VM_SAO ) ) return - EINVAL ; * vm_flags &= ~ VM_HUGEPAGE ; * vm_flags |= VM_NOHUGEPAGE ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( VM_HUGEPAGE | VM_NO_THP <S2SV_ModEnd> ) ) return <S2SV_ModStart> ( VM_NOHUGEPAGE | VM_NO_THP <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10150\n\n```\nCWE-264 static int kvm_ioctl_create_device ( struct kvm * kvm , struct kvm_create_device * cd ) { struct kvm_device_ops * ops = NULL ; struct kvm_device * dev ; bool test = cd -> flags & KVM_CREATE_DEVICE_TEST ; int ret ; if ( cd -> type >= ARRAY_SIZE ( kvm_device_ops_table ) ) return - ENODEV ; ops = kvm_device_ops_table [ cd -> type ] ; if ( ops == NULL ) return - ENODEV ; if ( test ) return 0 ; dev = kzalloc ( sizeof ( * dev ) , GFP_KERNEL ) ; if ( ! dev ) return - ENOMEM ; dev -> ops = ops ; dev -> kvm = kvm ; mutex_lock ( & kvm -> lock ) ; ret = ops -> create ( dev , cd -> type ) ; if ( ret < 0 ) { mutex_unlock ( & kvm -> lock ) ; kfree ( dev ) ; return ret ; } list_add ( & dev -> vm_node , & kvm -> devices ) ; mutex_unlock ( & kvm -> lock ) ; if ( ops -> init ) ops -> init ( dev ) ; ret = anon_inode_getfd ( ops -> name , & kvm_device_fops , dev , O_RDWR | O_CLOEXEC ) ; if ( ret < 0 ) { <S2SV_StartBug> ops -> destroy ( dev ) ; <S2SV_EndBug> mutex_lock ( & kvm -> lock ) ; list_del ( & dev -> vm_node ) ; mutex_unlock ( & kvm -> lock ) ; return ret ; } kvm_get_kvm ( kvm ) ; cd -> fd = ret ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { mutex_lock ( & kvm -> lock ) ; list_del ( & dev -> vm_node ) ; mutex_unlock ( & kvm -> lock ) ; <S2SV_ModStart> destroy ( dev <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21261\n\n```\nCWE-74 gboolean flatpak_run_app ( FlatpakDecomposed * app_ref , FlatpakDeploy * app_deploy , FlatpakContext * extra_context , const char * custom_runtime , const char * custom_runtime_version , const char * custom_runtime_commit , int parent_pid , FlatpakRunFlags flags , const char * cwd , const char * custom_command , char * args [ ] , int n_args , int instance_id_fd , char * * instance_dir_out , GCancellable * cancellable , GError * * error ) { g_autoptr ( FlatpakDeploy ) runtime_deploy = NULL ; g_autoptr ( GBytes ) runtime_deploy_data = NULL ; g_autoptr ( GBytes ) app_deploy_data = NULL ; g_autoptr ( GFile ) app_files = NULL ; g_autoptr ( GFile ) runtime_files = NULL ; g_autoptr ( GFile ) bin_ldconfig = NULL ; g_autoptr ( GFile ) app_id_dir = NULL ; g_autoptr ( GFile ) real_app_id_dir = NULL ; g_autofree char * default_runtime_pref = NULL ; g_autoptr ( FlatpakDecomposed ) default_runtime = NULL ; g_autofree char * default_command = NULL ; g_autoptr ( GKeyFile ) metakey = NULL ; g_autoptr ( GKeyFile ) runtime_metakey = NULL ; g_autoptr ( FlatpakBwrap ) bwrap = NULL ; const char * command = \"/bin/sh\" ; g_autoptr ( GError ) my_error = NULL ; g_autoptr ( FlatpakDecomposed ) runtime_ref = NULL ; int i ; g_autoptr ( GPtrArray ) previous_app_id_dirs = NULL ; g_autofree char * app_id = NULL ; g_autofree char * app_arch = NULL ; g_autofree char * app_info_path = NULL ; g_autofree char * instance_id_host_dir = NULL ; g_autoptr ( FlatpakContext ) app_context = NULL ; g_autoptr ( FlatpakContext ) overrides = NULL ; g_autoptr ( FlatpakExports ) exports = NULL ; g_autofree char * commandline = NULL ; g_autofree char * doc_mount_path = NULL ; g_autofree char * app_extensions = NULL ; g_autofree char * runtime_extensions = NULL ; g_autofree char * checksum = NULL ; int ld_so_fd = - 1 ; g_autoptr ( GFile ) runtime_ld_so_conf = NULL ; gboolean generate_ld_so_conf = TRUE ; gboolean use_ld_so_cache = TRUE ; gboolean sandboxed = ( flags & FLATPAK_RUN_FLAG_SANDBOX ) != 0 ; gboolean parent_expose_pids = ( flags & FLATPAK_RUN_FLAG_PARENT_EXPOSE_PIDS ) != 0 ; gboolean parent_share_pids = ( flags & FLATPAK_RUN_FLAG_PARENT_SHARE_PIDS ) != 0 ; struct stat s ; if ( ! check_sudo ( error ) ) return FALSE ; app_id = flatpak_decomposed_dup_id ( app_ref ) ; app_arch = flatpak_decomposed_dup_arch ( app_ref ) ; if ( ! check_parental_controls ( app_ref , app_deploy , cancellable , error ) ) return FALSE ; bwrap = flatpak_bwrap_new ( NULL ) ; flatpak_bwrap_add_arg ( bwrap , flatpak_get_bwrap ( ) ) ; if ( app_deploy == NULL ) { g_assert ( flatpak_decomposed_is_runtime ( app_ref ) ) ; default_runtime_pref = flatpak_decomposed_dup_pref ( app_ref ) ; } else { const gchar * key ; app_deploy_data = flatpak_deploy_get_deploy_data ( app_deploy , FLATPAK_DEPLOY_VERSION_ANY , cancellable , error ) ; if ( app_deploy_data == NULL ) return FALSE ; if ( ( flags & FLATPAK_RUN_FLAG_DEVEL ) != 0 ) key = FLATPAK_METADATA_KEY_SDK ; else key = FLATPAK_METADATA_KEY_RUNTIME ; metakey = flatpak_deploy_get_metadata ( app_deploy ) ; default_runtime_pref = g_key_file_get_string ( metakey , FLATPAK_METADATA_GROUP_APPLICATION , key , & my_error ) ; if ( my_error ) { g_propagate_error ( error , g_steal_pointer ( & my_error ) ) ; return FALSE ; } } default_runtime = flatpak_decomposed_new_from_pref ( FLATPAK_KINDS_RUNTIME , default_runtime_pref , error ) ; if ( default_runtime == NULL ) return FALSE ; if ( custom_runtime != NULL || custom_runtime_version != NULL ) { g_auto ( GStrv ) custom_runtime_parts = NULL ; const char * custom_runtime_id = NULL ; const char * custom_runtime_arch = NULL ; if ( custom_runtime ) { custom_runtime_parts = g_strsplit ( custom_runtime , \"/\" , 0 ) ; for ( i = 0 ; i < 3 && custom_runtime_parts [ i ] != NULL ; i ++ ) { if ( strlen ( custom_runtime_parts [ i ] ) > 0 ) { if ( i == 0 ) custom_runtime_id = custom_runtime_parts [ i ] ; if ( i == 1 ) custom_runtime_arch = custom_runtime_parts [ i ] ; if ( i == 2 && custom_runtime_version == NULL ) custom_runtime_version = custom_runtime_parts [ i ] ; } } } runtime_ref = flatpak_decomposed_new_from_decomposed ( default_runtime , FLATPAK_KINDS_RUNTIME , custom_runtime_id , custom_runtime_arch , custom_runtime_version , error ) ; if ( runtime_ref == NULL ) return FALSE ; } else runtime_ref = flatpak_decomposed_ref ( default_runtime ) ; runtime_deploy = flatpak_find_deploy_for_ref ( flatpak_decomposed_get_ref ( runtime_ref ) , custom_runtime_commit , NULL , cancellable , error ) ; if ( runtime_deploy == NULL ) return FALSE ; runtime_deploy_data = flatpak_deploy_get_deploy_data ( runtime_deploy , FLATPAK_DEPLOY_VERSION_ANY , cancellable , error ) ; if ( runtime_deploy_data == NULL ) return FALSE ; runtime_metakey = flatpak_deploy_get_metadata ( runtime_deploy ) ; app_context = flatpak_app_compute_permissions ( metakey , runtime_metakey , error ) ; if ( app_context == NULL ) return FALSE ; if ( app_deploy != NULL ) { overrides = flatpak_deploy_get_overrides ( app_deploy ) ; flatpak_context_merge ( app_context , overrides ) ; } if ( sandboxed ) flatpak_context_make_sandboxed ( app_context ) ; if ( extra_context ) flatpak_context_merge ( app_context , extra_context ) ; runtime_files = flatpak_deploy_get_files ( runtime_deploy ) ; bin_ldconfig = g_file_resolve_relative_path ( runtime_files , \"bin/ldconfig\" ) ; if ( ! g_file_query_exists ( bin_ldconfig , NULL ) ) use_ld_so_cache = FALSE ; if ( app_deploy != NULL ) { g_autofree const char * * previous_ids = NULL ; gsize len = 0 ; gboolean do_migrate ; real_app_id_dir = flatpak_get_data_dir ( app_id ) ; app_files = flatpak_deploy_get_files ( app_deploy ) ; previous_app_id_dirs = g_ptr_array_new_with_free_func ( g_object_unref ) ; previous_ids = flatpak_deploy_data_get_previous_ids ( app_deploy_data , & len ) ; do_migrate = ! g_file_query_exists ( real_app_id_dir , cancellable ) ; for ( i = len - 1 ; i >= 0 ; i -- ) { g_autoptr ( GFile ) previous_app_id_dir = NULL ; g_autoptr ( GFileInfo ) previous_app_id_dir_info = NULL ; g_autoptr ( GError ) local_error = NULL ; previous_app_id_dir = flatpak_get_data_dir ( previous_ids [ i ] ) ; previous_app_id_dir_info = g_file_query_info ( previous_app_id_dir , G_FILE_ATTRIBUTE_STANDARD_IS_SYMLINK \",\" G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET , G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS , cancellable , & local_error ) ; if ( previous_app_id_dir_info == NULL ) { if ( ! g_error_matches ( local_error , G_IO_ERROR , G_IO_ERROR_NOT_FOUND ) && do_migrate ) { g_warning ( _ ( \"Failed<S2SV_blank>to<S2SV_blank>migrate<S2SV_blank>from<S2SV_blank>%s:<S2SV_blank>%s\" ) , flatpak_file_get_path_cached ( previous_app_id_dir ) , local_error -> message ) ; do_migrate = FALSE ; } g_clear_error ( & local_error ) ; continue ; } if ( do_migrate ) { do_migrate = FALSE ; if ( ! flatpak_file_rename ( previous_app_id_dir , real_app_id_dir , cancellable , & local_error ) ) { g_warning ( _ ( \"Failed<S2SV_blank>to<S2SV_blank>migrate<S2SV_blank>old<S2SV_blank>app<S2SV_blank>data<S2SV_blank>directory<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>new<S2SV_blank>name<S2SV_blank>%s:<S2SV_blank>%s\" ) , flatpak_file_get_path_cached ( previous_app_id_dir ) , app_id , local_error -> message ) ; } else { if ( ! g_file_make_symbolic_link ( previous_app_id_dir , app_id , cancellable , & local_error ) ) { g_warning ( _ ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>symlink<S2SV_blank>while<S2SV_blank>migrating<S2SV_blank>%s:<S2SV_blank>%s\" ) , flatpak_file_get_path_cached ( previous_app_id_dir ) , local_error -> message ) ; } } } g_ptr_array_add ( previous_app_id_dirs , g_steal_pointer ( & previous_app_id_dir ) ) ; } if ( ! flatpak_ensure_data_dir ( real_app_id_dir , cancellable , error ) ) return FALSE ; if ( ! sandboxed ) app_id_dir = g_object_ref ( real_app_id_dir ) ; } flatpak_run_apply_env_default ( bwrap , use_ld_so_cache ) ; flatpak_run_apply_env_vars ( bwrap , app_context ) ; flatpak_run_apply_env_prompt ( bwrap , app_id ) ; if ( real_app_id_dir ) { g_autoptr ( GFile ) sandbox_dir = g_file_get_child ( real_app_id_dir , \"sandbox\" ) ; flatpak_bwrap_set_env ( bwrap , \"FLATPAK_SANDBOX_DIR\" , flatpak_file_get_path_cached ( sandbox_dir ) , TRUE ) ; } flatpak_bwrap_add_args ( bwrap , \"--ro-bind\" , flatpak_file_get_path_cached ( runtime_files ) , \"/usr\" , \"--lock-file\" , \"/usr/.ref\" , NULL ) ; if ( app_files != NULL ) flatpak_bwrap_add_args ( bwrap , \"--ro-bind\" , flatpak_file_get_path_cached ( app_files ) , \"/app\" , \"--lock-file\" , \"/app/.ref\" , NULL ) ; else flatpak_bwrap_add_args ( bwrap , \"--dir\" , \"/app\" , NULL ) ; if ( metakey != NULL && ! flatpak_run_add_extension_args ( bwrap , metakey , app_ref , use_ld_so_cache , & app_extensions , cancellable , error ) ) return FALSE ; if ( ! flatpak_run_add_extension_args ( bwrap , runtime_metakey , runtime_ref , use_ld_so_cache , & runtime_extensions , cancellable , error ) ) return FALSE ; runtime_ld_so_conf = g_file_resolve_relative_path ( runtime_files , \"etc/ld.so.conf\" ) ; if ( lstat ( flatpak_file_get_path_cached ( runtime_ld_so_conf ) , & s ) == 0 ) generate_ld_so_conf = S_ISREG ( s . st_mode ) && s . st_size == 0 ; if ( use_ld_so_cache ) { checksum = calculate_ld_cache_checksum ( app_deploy_data , runtime_deploy_data , app_extensions , runtime_extensions ) ; ld_so_fd = regenerate_ld_cache ( bwrap -> argv , bwrap -> fds , app_id_dir , checksum , runtime_files , generate_ld_so_conf , cancellable , error ) ; if ( ld_so_fd == - 1 ) return FALSE ; flatpak_bwrap_add_fd ( bwrap , ld_so_fd ) ; } flags |= flatpak_context_get_run_flags ( app_context ) ; if ( ! flatpak_run_setup_base_argv ( bwrap , runtime_files , app_id_dir , app_arch , flags , error ) ) return FALSE ; if ( generate_ld_so_conf ) { if ( ! add_ld_so_conf ( bwrap , error ) ) return FALSE ; } if ( ld_so_fd != - 1 ) { flatpak_bwrap_add_arg ( bwrap , \"--ro-bind-data\" ) ; flatpak_bwrap_add_arg_printf ( bwrap , \"%d\" , ld_so_fd ) ; flatpak_bwrap_add_arg ( bwrap , \"/etc/ld.so.cache\" ) ; } if ( ! flatpak_run_add_app_info_args ( bwrap , app_files , app_deploy_data , app_extensions , runtime_files , runtime_deploy_data , runtime_extensions , app_id , flatpak_decomposed_get_branch ( app_ref ) , runtime_ref , app_id_dir , app_context , extra_context , sandboxed , FALSE , flags & FLATPAK_RUN_FLAG_DEVEL , & app_info_path , instance_id_fd , & instance_id_host_dir , error ) ) return FALSE ; if ( ! flatpak_run_add_dconf_args ( bwrap , app_id , metakey , error ) ) return FALSE ; if ( ! sandboxed && ! ( flags & FLATPAK_RUN_FLAG_NO_DOCUMENTS_PORTAL ) ) add_document_portal_args ( bwrap , app_id , & doc_mount_path ) ; if ( ! flatpak_run_add_environment_args ( bwrap , app_info_path , flags , app_id , app_context , app_id_dir , previous_app_id_dirs , & exports , cancellable , error ) ) return FALSE ; if ( ( app_context -> shares & FLATPAK_CONTEXT_SHARED_NETWORK ) != 0 ) flatpak_run_add_resolved_args ( bwrap ) ; flatpak_run_add_journal_args ( bwrap ) ; add_font_path_args ( bwrap ) ; add_icon_path_args ( bwrap ) ; flatpak_bwrap_add_args ( bwrap , \"--symlink\" , \"/app/lib/debug/source\" , \"/run/build\" , \"--symlink\" , \"/usr/lib/debug/source\" , \"/run/build-runtime\" , NULL ) ; if ( cwd ) flatpak_bwrap_add_args ( bwrap , \"--chdir\" , cwd , NULL ) ; if ( parent_expose_pids || parent_share_pids ) { g_autofree char * userns_path = NULL ; g_autofree char * pidns_path = NULL ; g_autofree char * userns2_path = NULL ; int userns_fd , userns2_fd , pidns_fd ; if ( parent_pid == 0 ) return flatpak_fail ( error , \"No<S2SV_blank>parent<S2SV_blank>pid<S2SV_blank>specified\" ) ; userns_path = g_strdup_printf ( \"/proc/%d/root/run/.userns\" , parent_pid ) ; userns_fd = open_namespace_fd_if_needed ( userns_path , \"/proc/self/ns/user\" ) ; if ( userns_fd != - 1 ) { flatpak_bwrap_add_args_data_fd ( bwrap , \"--userns\" , userns_fd , NULL ) ; userns2_path = g_strdup_printf ( \"/proc/%d/ns/user\" , parent_pid ) ; userns2_fd = open_namespace_fd_if_needed ( userns2_path , userns_path ) ; if ( userns2_fd != - 1 ) flatpak_bwrap_add_args_data_fd ( bwrap , \"--userns2\" , userns2_fd , NULL ) ; } pidns_path = g_strdup_printf ( \"/proc/%d/ns/pid\" , parent_pid ) ; pidns_fd = open ( pidns_path , O_RDONLY | O_CLOEXEC ) ; if ( pidns_fd != - 1 ) flatpak_bwrap_add_args_data_fd ( bwrap , \"--pidns\" , pidns_fd , NULL ) ; } if ( custom_command ) { command = custom_command ; } else if ( metakey ) { default_command = g_key_file_get_string ( metakey , FLATPAK_METADATA_GROUP_APPLICATION , FLATPAK_METADATA_KEY_COMMAND , & my_error ) ; if ( my_error ) { g_propagate_error ( error , g_steal_pointer ( & my_error ) ) ; return FALSE ; } command = default_command ; } <S2SV_StartBug> if ( ! flatpak_bwrap_bundle_args ( bwrap , 1 , - 1 , FALSE , error ) ) <S2SV_EndBug> return FALSE ; flatpak_bwrap_add_arg ( bwrap , command ) ; if ( ! add_rest_args ( bwrap , app_id , exports , ( flags & FLATPAK_RUN_FLAG_FILE_FORWARDING ) != 0 , doc_mount_path , args , n_args , error ) ) return FALSE ; flatpak_bwrap_finish ( bwrap ) ; commandline = flatpak_quote_argv ( ( const char * * ) bwrap -> argv -> pdata , - 1 ) ; g_debug ( \"Running<S2SV_blank>\\'%s\\'\" , commandline ) ; if ( ( flags & FLATPAK_RUN_FLAG_BACKGROUND ) != 0 ) { GPid child_pid ; char pid_str [ 64 ] ; g_autofree char * pid_path = NULL ; GSpawnFlags spawn_flags ; spawn_flags = G_SPAWN_SEARCH_PATH ; if ( flags & FLATPAK_RUN_FLAG_DO_NOT_REAP ) spawn_flags |= G_SPAWN_DO_NOT_REAP_CHILD ; spawn_flags |= G_SPAWN_LEAVE_DESCRIPTORS_OPEN ; <S2SV_StartBug> if ( ! g_spawn_async ( NULL , <S2SV_EndBug> ( char * * ) bwrap -> argv -> pdata , bwrap -> envp , spawn_flags , flatpak_bwrap_child_setup_cb , bwrap -> fds , & child_pid , error ) ) return FALSE ; g_snprintf ( pid_str , sizeof ( pid_str ) , \"%d\" , child_pid ) ; pid_path = g_build_filename ( instance_id_host_dir , \"pid\" , NULL ) ; g_file_set_contents ( pid_path , pid_str , - 1 , NULL ) ; } else { char pid_str [ 64 ] ; g_autofree char * pid_path = NULL ; g_snprintf ( pid_str , sizeof ( pid_str ) , \"%d\" , getpid ( ) ) ; pid_path = g_build_filename ( instance_id_host_dir , \"pid\" , NULL ) ; g_file_set_contents ( pid_path , pid_str , - 1 , NULL ) ; flatpak_bwrap_child_setup ( bwrap -> fds , FALSE ) ; <S2SV_StartBug> if ( execvpe ( flatpak_get_bwrap ( ) , ( char * * ) bwrap -> argv -> pdata , bwrap -> envp ) == - 1 ) <S2SV_EndBug> { g_set_error_literal ( error , G_IO_ERROR , g_io_error_from_errno ( errno ) , _ ( \"Unable<S2SV_blank>to<S2SV_blank>start<S2SV_blank>app\" ) ) ; return FALSE ; } } if ( instance_dir_out ) * instance_dir_out = g_steal_pointer ( & instance_id_host_dir ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> default_command ; } flatpak_bwrap_envp_to_args ( bwrap ) ; <S2SV_ModStart> |= G_SPAWN_LEAVE_DESCRIPTORS_OPEN ; g_assert ( bwrap -> envp != NULL ) ; g_assert ( bwrap -> envp [ 0 ] == NULL ) ; <S2SV_ModStart> FALSE ) ; g_assert ( bwrap -> envp != NULL ) ; g_assert ( bwrap -> envp [ 0 ] == NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void perf_event_interrupt ( struct pt_regs * regs ) { int i ; struct cpu_hw_events * cpuhw = & __get_cpu_var ( cpu_hw_events ) ; struct perf_event * event ; unsigned long val ; int found = 0 ; int nmi ; if ( cpuhw -> n_limited ) freeze_limited_counters ( cpuhw , mfspr ( SPRN_PMC5 ) , mfspr ( SPRN_PMC6 ) ) ; perf_read_regs ( regs ) ; nmi = perf_intr_is_nmi ( regs ) ; if ( nmi ) nmi_enter ( ) ; else irq_enter ( ) ; for ( i = 0 ; i < cpuhw -> n_events ; ++ i ) { event = cpuhw -> event [ i ] ; if ( ! event -> hw . idx || is_limited_pmc ( event -> hw . idx ) ) continue ; val = read_pmc ( event -> hw . idx ) ; if ( ( int ) val < 0 ) { found = 1 ; <S2SV_StartBug> record_and_restart ( event , val , regs , nmi ) ; <S2SV_EndBug> } } if ( ! found ) { for ( i = 0 ; i < ppmu -> n_counter ; ++ i ) { if ( is_limited_pmc ( i + 1 ) ) continue ; val = read_pmc ( i + 1 ) ; if ( pmc_overflow ( val ) ) write_pmc ( i + 1 , 0 ) ; } } write_mmcr0 ( cpuhw , cpuhw -> mmcr [ 0 ] ) ; if ( nmi ) nmi_exit ( ) ; else irq_exit ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val , regs <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8_get_last_ref_updates ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctrl_id , va_list args ) { int * update_info = va_arg ( args , int * ) ; if ( update_info && ! ctx -> yv12_frame_buffers . use_frame_threads ) { VP8D_COMP * pbi = ( VP8D_COMP * ) ctx -> yv12_frame_buffers . pbi [ 0 ] ; * update_info = pbi -> common . refresh_alt_ref_frame * ( int ) VP8_ALTR_FRAME + pbi -> common . refresh_golden_frame * ( int ) VP8_GOLD_FRAME + pbi -> common . refresh_last_frame * ( int ) VP8_LAST_FRAME ; return VPX_CODEC_OK ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7023\n\n```\nCWE-119 int ff_combine_frame ( ParseContext * pc , int next , const uint8_t * * buf , int * buf_size ) { if ( pc -> overread ) { av_dlog ( NULL , \"overread<S2SV_blank>%d,<S2SV_blank>state:%X<S2SV_blank>next:%d<S2SV_blank>index:%d<S2SV_blank>o_index:%d\\\\n\" , pc -> overread , pc -> state , next , pc -> index , pc -> overread_index ) ; av_dlog ( NULL , \"%X<S2SV_blank>%X<S2SV_blank>%X<S2SV_blank>%X\\\\n\" , ( * buf ) [ 0 ] , ( * buf ) [ 1 ] , ( * buf ) [ 2 ] , ( * buf ) [ 3 ] ) ; } for ( ; pc -> overread > 0 ; pc -> overread -- ) { pc -> buffer [ pc -> index ++ ] = pc -> buffer [ pc -> overread_index ++ ] ; } if ( ! * buf_size && next == END_NOT_FOUND ) { next = 0 ; } pc -> last_index = pc -> index ; if ( next == END_NOT_FOUND ) { void * new_buffer = av_fast_realloc ( pc -> buffer , & pc -> buffer_size , ( * buf_size ) + pc -> index + FF_INPUT_BUFFER_PADDING_SIZE ) ; <S2SV_StartBug> if ( ! new_buffer ) <S2SV_EndBug> <S2SV_StartBug> return AVERROR ( ENOMEM ) ; <S2SV_EndBug> pc -> buffer = new_buffer ; memcpy ( & pc -> buffer [ pc -> index ] , * buf , * buf_size ) ; pc -> index += * buf_size ; return - 1 ; } * buf_size = pc -> overread_index = pc -> index + next ; if ( pc -> index ) { void * new_buffer = av_fast_realloc ( pc -> buffer , & pc -> buffer_size , next + pc -> index + FF_INPUT_BUFFER_PADDING_SIZE ) ; <S2SV_StartBug> if ( ! new_buffer ) <S2SV_EndBug> <S2SV_StartBug> return AVERROR ( ENOMEM ) ; <S2SV_EndBug> pc -> buffer = new_buffer ; if ( next > - FF_INPUT_BUFFER_PADDING_SIZE ) memcpy ( & pc -> buffer [ pc -> index ] , * buf , next + FF_INPUT_BUFFER_PADDING_SIZE ) ; pc -> index = 0 ; * buf = pc -> buffer ; } for ( ; next < 0 ; next ++ ) { pc -> state = ( pc -> state << 8 ) | pc -> buffer [ pc -> last_index + next ] ; pc -> state64 = ( pc -> state64 << 8 ) | pc -> buffer [ pc -> last_index + next ] ; pc -> overread ++ ; } if ( pc -> overread ) { av_dlog ( NULL , \"overread<S2SV_blank>%d,<S2SV_blank>state:%X<S2SV_blank>next:%d<S2SV_blank>index:%d<S2SV_blank>o_index:%d\\\\n\" , pc -> overread , pc -> state , next , pc -> index , pc -> overread_index ) ; av_dlog ( NULL , \"%X<S2SV_blank>%X<S2SV_blank>%X<S2SV_blank>%X\\\\n\" , ( * buf ) [ 0 ] , ( * buf ) [ 1 ] , ( * buf ) [ 2 ] , ( * buf ) [ 3 ] ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! new_buffer ) { pc -> index = 0 ; <S2SV_ModStart> ENOMEM ) ; } <S2SV_ModStart> ! new_buffer ) { pc -> overread_index = pc -> index = 0 ; <S2SV_ModStart> ENOMEM ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1479\n\n```\nCWE-399 SYSCALL_DEFINE1 ( inotify_init1 , int , flags ) { <S2SV_StartBug> struct fsnotify_group * group ; <S2SV_EndBug> struct user_struct * user ; int ret ; BUILD_BUG_ON ( IN_CLOEXEC != O_CLOEXEC ) ; BUILD_BUG_ON ( IN_NONBLOCK != O_NONBLOCK ) ; if ( flags & ~ ( IN_CLOEXEC | IN_NONBLOCK ) ) return - EINVAL ; <S2SV_StartBug> user = get_current_user ( ) ; <S2SV_EndBug> if ( unlikely ( atomic_read ( & user -> inotify_devs ) >= inotify_max_user_instances ) ) { ret = - EMFILE ; goto out_free_uid ; } <S2SV_StartBug> group = inotify_new_group ( user , inotify_max_queued_events ) ; <S2SV_EndBug> <S2SV_StartBug> if ( IS_ERR ( group ) ) { <S2SV_EndBug> <S2SV_StartBug> ret = PTR_ERR ( group ) ; <S2SV_EndBug> goto out_free_uid ; } atomic_inc ( & user -> inotify_devs ) ; ret = anon_inode_getfd ( \"inotify\" , & inotify_fops , group , O_RDONLY | flags ) ; <S2SV_StartBug> if ( ret >= 0 ) <S2SV_EndBug> return ret ; <S2SV_StartBug> fsnotify_put_group ( group ) ; <S2SV_EndBug> atomic_dec ( & user -> inotify_devs ) ; out_free_uid : free_uid ( user ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fsnotify_group * group <S2SV_ModEnd> ; int ret <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> group = inotify_new_group <S2SV_ModStart> = inotify_new_group ( <S2SV_ModEnd> inotify_max_queued_events ) ; <S2SV_ModStart> group ) ) return <S2SV_ModEnd> PTR_ERR ( group <S2SV_ModStart> PTR_ERR ( group <S2SV_ModEnd> ) ; ret <S2SV_ModStart> if ( ret < 0 ) <S2SV_ModEnd> fsnotify_put_group ( group <S2SV_ModStart> fsnotify_put_group ( group <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void write_modes_b ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_StartBug> vp9_writer * w , TOKENEXTRA * * tok , TOKENEXTRA * tok_end , <S2SV_EndBug> int mi_row , int mi_col ) { <S2SV_StartBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_EndBug> <S2SV_StartBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> MODE_INFO * m ; xd -> mi = cm -> mi_grid_visible + ( mi_row * cm -> mi_stride + mi_col ) ; m = xd -> mi [ 0 ] ; <S2SV_StartBug> set_mi_row_col ( xd , tile , <S2SV_EndBug> mi_row , num_8x8_blocks_high_lookup [ m -> mbmi . sb_type ] , mi_col , num_8x8_blocks_wide_lookup [ m -> mbmi . sb_type ] , cm -> mi_rows , cm -> mi_cols ) ; if ( frame_is_intra_only ( cm ) ) { <S2SV_StartBug> write_mb_modes_kf ( cpi , xd -> mi , w ) ; <S2SV_EndBug> } else { pack_inter_mode_mvs ( cpi , m , w ) ; } assert ( * tok < tok_end ) ; <S2SV_StartBug> pack_mb_tokens ( w , tok , tok_end ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const tile , vpx_writer <S2SV_ModEnd> * w , <S2SV_ModStart> * tok , const TOKENEXTRA * const <S2SV_ModEnd> tok_end , int <S2SV_ModStart> mi_col ) { const <S2SV_ModStart> & cpi -> td . <S2SV_ModStart> 0 ] ; cpi -> td . mb . mbmi_ext = cpi -> td . mb . mbmi_ext_base + ( mi_row * cm -> mi_cols + mi_col ) ; <S2SV_ModStart> { write_mb_modes_kf ( cm , xd <S2SV_ModEnd> , xd -> <S2SV_ModStart> tok , tok_end , cm -> bit_depth\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5332\n\n```\nCWE-119 int mlx4_register_mac ( struct mlx4_dev * dev , u8 port , u64 mac , int * index ) { struct mlx4_mac_table * table = & mlx4_priv ( dev ) -> port [ port ] . mac_table ; int i , err = 0 ; int free = - 1 ; mlx4_dbg ( dev , \"Registering<S2SV_blank>MAC:<S2SV_blank>0x%llx\\\\n\" , ( unsigned long long ) mac ) ; mutex_lock ( & table -> mutex ) ; for ( i = 0 ; i < MLX4_MAX_MAC_NUM - 1 ; i ++ ) { if ( free < 0 && ! table -> refs [ i ] ) { free = i ; continue ; } if ( mac == ( MLX4_MAC_MASK & be64_to_cpu ( table -> entries [ i ] ) ) ) { * index = i ; ++ table -> refs [ i ] ; goto out ; } } <S2SV_StartBug> mlx4_dbg ( dev , \"Free<S2SV_blank>MAC<S2SV_blank>index<S2SV_blank>is<S2SV_blank>%d\\\\n\" , free ) ; <S2SV_EndBug> if ( table -> total == table -> max ) { err = - ENOSPC ; goto out ; } table -> refs [ free ] = 1 ; table -> entries [ free ] = cpu_to_be64 ( mac | MLX4_MAC_VALID ) ; err = mlx4_set_port_mac_table ( dev , port , table -> entries ) ; if ( unlikely ( err ) ) { mlx4_err ( dev , \"Failed<S2SV_blank>adding<S2SV_blank>MAC:<S2SV_blank>0x%llx\\\\n\" , ( unsigned long long ) mac ) ; table -> refs [ free ] = 0 ; table -> entries [ free ] = 0 ; goto out ; } * index = free ; ++ table -> total ; out : mutex_unlock ( & table -> mutex ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( free < 0 ) { err = - ENOMEM ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-200 static int crypto_report_acomp ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_acomp racomp ; <S2SV_StartBug> strlcpy ( racomp . type , \"acomp\" , sizeof ( racomp . type ) ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_ACOMP , sizeof ( struct crypto_report_acomp ) , & racomp ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_acomp racomp ; strncpy <S2SV_ModEnd> ( racomp .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0178\n\n```\nCWE-20 int prepareForShutdown ( ) { redisLog ( REDIS_WARNING , \"User<S2SV_blank>requested<S2SV_blank>shutdown,<S2SV_blank>saving<S2SV_blank>DB...\" ) ; if ( server . bgsavechildpid != - 1 ) { redisLog ( REDIS_WARNING , \"There<S2SV_blank>is<S2SV_blank>a<S2SV_blank>live<S2SV_blank>saving<S2SV_blank>child.<S2SV_blank>Killing<S2SV_blank>it!\" ) ; kill ( server . bgsavechildpid , SIGKILL ) ; rdbRemoveTempFile ( server . bgsavechildpid ) ; } if ( server . appendonly ) { <S2SV_StartBug> aof_fsync ( server . appendfd ) ; <S2SV_EndBug> if ( server . vm_enabled ) unlink ( server . vm_swap_file ) ; } else if ( server . saveparamslen > 0 ) { if ( rdbSave ( server . dbfilename ) != REDIS_OK ) { redisLog ( REDIS_WARNING , \"Error<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>save<S2SV_blank>the<S2SV_blank>DB,<S2SV_blank>can\\'t<S2SV_blank>exit\" ) ; return REDIS_ERR ; } } else { redisLog ( REDIS_WARNING , \"Not<S2SV_blank>saving<S2SV_blank>DB.\" ) ; } if ( server . daemonize ) unlink ( server . pidfile ) ; redisLog ( REDIS_WARNING , \"Server<S2SV_blank>exit<S2SV_blank>now,<S2SV_blank>bye<S2SV_blank>bye...\" ) ; return REDIS_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> server . appendfd <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010208\n\n```\nCWE-119 NTSTATUS ProcessMainDeviceControlIrp ( PDEVICE_OBJECT DeviceObject , PEXTENSION Extension , PIRP Irp ) { PIO_STACK_LOCATION irpSp = IoGetCurrentIrpStackLocation ( Irp ) ; NTSTATUS ntStatus ; switch ( irpSp -> Parameters . DeviceIoControl . IoControlCode ) { case TC_IOCTL_GET_DRIVER_VERSION : case TC_IOCTL_LEGACY_GET_DRIVER_VERSION : if ( ValidateIOBufferSize ( Irp , sizeof ( LONG ) , ValidateOutput ) ) { LONG tmp = VERSION_NUM ; memcpy ( Irp -> AssociatedIrp . SystemBuffer , & tmp , 4 ) ; Irp -> IoStatus . Information = sizeof ( LONG ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } break ; case TC_IOCTL_GET_DEVICE_REFCOUNT : if ( ValidateIOBufferSize ( Irp , sizeof ( int ) , ValidateOutput ) ) { * ( int * ) Irp -> AssociatedIrp . SystemBuffer = DeviceObject -> ReferenceCount ; Irp -> IoStatus . Information = sizeof ( int ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } break ; case TC_IOCTL_IS_DRIVER_UNLOAD_DISABLED : if ( ValidateIOBufferSize ( Irp , sizeof ( int ) , ValidateOutput ) ) { LONG deviceObjectCount = 0 ; * ( int * ) Irp -> AssociatedIrp . SystemBuffer = DriverUnloadDisabled ; if ( IoEnumerateDeviceObjectList ( TCDriverObject , NULL , 0 , & deviceObjectCount ) == STATUS_BUFFER_TOO_SMALL && deviceObjectCount > 1 ) * ( int * ) Irp -> AssociatedIrp . SystemBuffer = TRUE ; Irp -> IoStatus . Information = sizeof ( int ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } break ; case TC_IOCTL_IS_ANY_VOLUME_MOUNTED : if ( ValidateIOBufferSize ( Irp , sizeof ( int ) , ValidateOutput ) ) { int drive ; * ( int * ) Irp -> AssociatedIrp . SystemBuffer = 0 ; for ( drive = MIN_MOUNTED_VOLUME_DRIVE_NUMBER ; drive <= MAX_MOUNTED_VOLUME_DRIVE_NUMBER ; ++ drive ) { if ( GetVirtualVolumeDeviceObject ( drive ) ) { * ( int * ) Irp -> AssociatedIrp . SystemBuffer = 1 ; break ; } } if ( IsBootDriveMounted ( ) ) * ( int * ) Irp -> AssociatedIrp . SystemBuffer = 1 ; Irp -> IoStatus . Information = sizeof ( int ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } break ; case TC_IOCTL_OPEN_TEST : { OPEN_TEST_STRUCT * opentest = ( OPEN_TEST_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; OBJECT_ATTRIBUTES ObjectAttributes ; HANDLE NtFileHandle ; UNICODE_STRING FullFileName ; IO_STATUS_BLOCK IoStatus ; LARGE_INTEGER offset ; ACCESS_MASK access = FILE_READ_ATTRIBUTES ; if ( ! ValidateIOBufferSize ( Irp , sizeof ( OPEN_TEST_STRUCT ) , ValidateInputOutput ) ) break ; EnsureNullTerminatedString ( opentest -> wszFileName , sizeof ( opentest -> wszFileName ) ) ; RtlInitUnicodeString ( & FullFileName , opentest -> wszFileName ) ; InitializeObjectAttributes ( & ObjectAttributes , & FullFileName , OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE , NULL , NULL ) ; if ( opentest -> bDetectTCBootLoader || opentest -> DetectFilesystem || opentest -> bComputeVolumeIDs ) access |= FILE_READ_DATA ; ntStatus = ZwCreateFile ( & NtFileHandle , SYNCHRONIZE | access , & ObjectAttributes , & IoStatus , NULL , 0 , FILE_SHARE_READ | FILE_SHARE_WRITE , FILE_OPEN , FILE_SYNCHRONOUS_IO_NONALERT , NULL , 0 ) ; if ( NT_SUCCESS ( ntStatus ) ) { opentest -> TCBootLoaderDetected = FALSE ; opentest -> FilesystemDetected = FALSE ; memset ( opentest -> VolumeIDComputed , 0 , sizeof ( opentest -> VolumeIDComputed ) ) ; memset ( opentest -> volumeIDs , 0 , sizeof ( opentest -> volumeIDs ) ) ; if ( opentest -> bDetectTCBootLoader || opentest -> DetectFilesystem || opentest -> bComputeVolumeIDs ) { byte * readBuffer = TCalloc ( TC_MAX_VOLUME_SECTOR_SIZE ) ; if ( ! readBuffer ) { ntStatus = STATUS_INSUFFICIENT_RESOURCES ; } else { if ( opentest -> bDetectTCBootLoader || opentest -> DetectFilesystem ) { offset . QuadPart = 0 ; ntStatus = ZwReadFile ( NtFileHandle , NULL , NULL , NULL , & IoStatus , readBuffer , TC_MAX_VOLUME_SECTOR_SIZE , & offset , NULL ) ; if ( NT_SUCCESS ( ntStatus ) ) { size_t i ; if ( opentest -> bDetectTCBootLoader && IoStatus . Information >= TC_SECTOR_SIZE_BIOS ) { for ( i = 0 ; i < TC_SECTOR_SIZE_BIOS - strlen ( TC_APP_NAME ) ; ++ i ) { if ( memcmp ( readBuffer + i , TC_APP_NAME , strlen ( TC_APP_NAME ) ) == 0 ) { opentest -> TCBootLoaderDetected = TRUE ; break ; } } } if ( opentest -> DetectFilesystem && IoStatus . Information >= sizeof ( int64 ) ) { switch ( BE64 ( * ( uint64 * ) readBuffer ) ) { case 0xEB52904E54465320ULL : case 0xEB3C904D53444F53ULL : case 0xEB58904D53444F53ULL : case 0xEB76904558464154ULL : case 0x0000005265465300ULL : case 0xEB58906D6B66732EULL : case 0xEB58906D6B646F73ULL : case 0xEB3C906D6B66732EULL : case 0xEB3C906D6B646F73ULL : opentest -> FilesystemDetected = TRUE ; break ; case 0x0000000000000000ULL : if ( IsAllZeroes ( readBuffer + 8 , TC_VOLUME_HEADER_EFFECTIVE_SIZE - 8 ) ) opentest -> FilesystemDetected = TRUE ; break ; } } } } if ( opentest -> bComputeVolumeIDs && ( ! opentest -> DetectFilesystem || ! opentest -> FilesystemDetected ) ) { int volumeType ; for ( volumeType = TC_VOLUME_TYPE_NORMAL ; volumeType < TC_VOLUME_TYPE_COUNT ; volumeType ++ ) { switch ( volumeType ) { case TC_VOLUME_TYPE_NORMAL : offset . QuadPart = TC_VOLUME_HEADER_OFFSET ; break ; case TC_VOLUME_TYPE_HIDDEN : offset . QuadPart = TC_HIDDEN_VOLUME_HEADER_OFFSET ; break ; } ntStatus = ZwReadFile ( NtFileHandle , NULL , NULL , NULL , & IoStatus , readBuffer , TC_MAX_VOLUME_SECTOR_SIZE , & offset , NULL ) ; if ( NT_SUCCESS ( ntStatus ) ) { sha256 ( opentest -> volumeIDs [ volumeType ] , readBuffer , TC_VOLUME_HEADER_EFFECTIVE_SIZE ) ; opentest -> VolumeIDComputed [ volumeType ] = TRUE ; } } } TCfree ( readBuffer ) ; } } ZwClose ( NtFileHandle ) ; Dump ( \"Open<S2SV_blank>test<S2SV_blank>on<S2SV_blank>file<S2SV_blank>%ls<S2SV_blank>success.\\\\n\" , opentest -> wszFileName ) ; } else { # if 0 Dump ( \"Open<S2SV_blank>test<S2SV_blank>on<S2SV_blank>file<S2SV_blank>%ls<S2SV_blank>failed<S2SV_blank>NTSTATUS<S2SV_blank>0x%08x\\\\n\" , opentest -> wszFileName , ntStatus ) ; # endif } Irp -> IoStatus . Information = NT_SUCCESS ( ntStatus ) ? sizeof ( OPEN_TEST_STRUCT ) : 0 ; Irp -> IoStatus . Status = ntStatus ; } break ; case TC_IOCTL_GET_SYSTEM_DRIVE_CONFIG : { GetSystemDriveConfigurationRequest * request = ( GetSystemDriveConfigurationRequest * ) Irp -> AssociatedIrp . SystemBuffer ; OBJECT_ATTRIBUTES ObjectAttributes ; HANDLE NtFileHandle ; UNICODE_STRING FullFileName ; IO_STATUS_BLOCK IoStatus ; LARGE_INTEGER offset ; <S2SV_StartBug> byte readBuffer [ TC_SECTOR_SIZE_BIOS ] ; <S2SV_EndBug> if ( ! ValidateIOBufferSize ( Irp , sizeof ( GetSystemDriveConfigurationRequest ) , ValidateInputOutput ) ) <S2SV_StartBug> break ; <S2SV_EndBug> EnsureNullTerminatedString ( request -> DevicePath , sizeof ( request -> DevicePath ) ) ; RtlInitUnicodeString ( & FullFileName , request -> DevicePath ) ; InitializeObjectAttributes ( & ObjectAttributes , & FullFileName , OBJ_CASE_INSENSITIVE | OBJ_KERNEL_HANDLE , NULL , NULL ) ; ntStatus = ZwCreateFile ( & NtFileHandle , SYNCHRONIZE | GENERIC_READ , & ObjectAttributes , & IoStatus , NULL , FILE_ATTRIBUTE_NORMAL , FILE_SHARE_READ | FILE_SHARE_WRITE , FILE_OPEN , FILE_SYNCHRONOUS_IO_NONALERT | FILE_RANDOM_ACCESS , NULL , 0 ) ; if ( NT_SUCCESS ( ntStatus ) ) { <S2SV_StartBug> offset . QuadPart = 0 ; <S2SV_EndBug> ntStatus = ZwReadFile ( NtFileHandle , NULL , NULL , NULL , & IoStatus , readBuffer , <S2SV_StartBug> sizeof ( readBuffer ) , <S2SV_EndBug> & offset , NULL ) ; <S2SV_StartBug> if ( NT_SUCCESS ( ntStatus ) ) <S2SV_EndBug> { size_t i ; request -> DriveIsDynamic = FALSE ; if ( readBuffer [ 510 ] == 0x55 && readBuffer [ 511 ] == 0xaa ) { int i ; for ( i = 0 ; i < 4 ; ++ i ) { if ( readBuffer [ 446 + i * 16 + 4 ] == PARTITION_LDM ) { request -> DriveIsDynamic = TRUE ; break ; } } } request -> BootLoaderVersion = 0 ; request -> Configuration = 0 ; request -> UserConfiguration = 0 ; request -> CustomUserMessage [ 0 ] = 0 ; for ( i = 0 ; i < sizeof ( readBuffer ) - strlen ( TC_APP_NAME ) ; ++ i ) { if ( memcmp ( readBuffer + i , TC_APP_NAME , strlen ( TC_APP_NAME ) ) == 0 ) { request -> BootLoaderVersion = BE16 ( * ( uint16 * ) ( readBuffer + TC_BOOT_SECTOR_VERSION_OFFSET ) ) ; request -> Configuration = readBuffer [ TC_BOOT_SECTOR_CONFIG_OFFSET ] ; if ( request -> BootLoaderVersion != 0 && request -> BootLoaderVersion <= VERSION_NUM ) { request -> UserConfiguration = readBuffer [ TC_BOOT_SECTOR_USER_CONFIG_OFFSET ] ; memcpy ( request -> CustomUserMessage , readBuffer + TC_BOOT_SECTOR_USER_MESSAGE_OFFSET , TC_BOOT_SECTOR_USER_MESSAGE_MAX_LENGTH ) ; } break ; } } Irp -> IoStatus . Status = STATUS_SUCCESS ; Irp -> IoStatus . Information = sizeof ( * request ) ; } else { <S2SV_StartBug> Irp -> IoStatus . Status = ntStatus ; <S2SV_EndBug> <S2SV_StartBug> Irp -> IoStatus . Information = 0 ; <S2SV_EndBug> } ZwClose ( NtFileHandle ) ; } else { Irp -> IoStatus . Status = ntStatus ; Irp -> IoStatus . Information = 0 ; } } break ; case TC_IOCTL_WIPE_PASSWORD_CACHE : WipeCache ( ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_GET_PASSWORD_CACHE_STATUS : Irp -> IoStatus . Status = cacheEmpty ? STATUS_PIPE_EMPTY : STATUS_SUCCESS ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_SET_PORTABLE_MODE_STATUS : if ( ! UserCanAccessDriveDevice ( ) ) { Irp -> IoStatus . Status = STATUS_ACCESS_DENIED ; Irp -> IoStatus . Information = 0 ; } else { PortableMode = TRUE ; Dump ( \"Setting<S2SV_blank>portable<S2SV_blank>mode\\\\n\" ) ; } break ; case TC_IOCTL_GET_PORTABLE_MODE_STATUS : Irp -> IoStatus . Status = PortableMode ? STATUS_SUCCESS : STATUS_PIPE_EMPTY ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_GET_MOUNTED_VOLUMES : if ( ValidateIOBufferSize ( Irp , sizeof ( MOUNT_LIST_STRUCT ) , ValidateOutput ) ) { MOUNT_LIST_STRUCT * list = ( MOUNT_LIST_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; PDEVICE_OBJECT ListDevice ; int drive ; list -> ulMountedDrives = 0 ; for ( drive = MIN_MOUNTED_VOLUME_DRIVE_NUMBER ; drive <= MAX_MOUNTED_VOLUME_DRIVE_NUMBER ; ++ drive ) { PEXTENSION ListExtension ; ListDevice = GetVirtualVolumeDeviceObject ( drive ) ; if ( ! ListDevice ) continue ; ListExtension = ( PEXTENSION ) ListDevice -> DeviceExtension ; if ( IsVolumeAccessibleByCurrentUser ( ListExtension ) ) { list -> ulMountedDrives |= ( 1 << ListExtension -> nDosDriveNo ) ; RtlStringCbCopyW ( list -> wszVolume [ ListExtension -> nDosDriveNo ] , sizeof ( list -> wszVolume [ ListExtension -> nDosDriveNo ] ) , ListExtension -> wszVolume ) ; RtlStringCbCopyW ( list -> wszLabel [ ListExtension -> nDosDriveNo ] , sizeof ( list -> wszLabel [ ListExtension -> nDosDriveNo ] ) , ListExtension -> wszLabel ) ; memcpy ( list -> volumeID [ ListExtension -> nDosDriveNo ] , ListExtension -> volumeID , VOLUME_ID_SIZE ) ; list -> diskLength [ ListExtension -> nDosDriveNo ] = ListExtension -> DiskLength ; list -> ea [ ListExtension -> nDosDriveNo ] = ListExtension -> cryptoInfo -> ea ; if ( ListExtension -> cryptoInfo -> hiddenVolume ) list -> volumeType [ ListExtension -> nDosDriveNo ] = PROP_VOL_TYPE_HIDDEN ; else if ( ListExtension -> cryptoInfo -> bHiddenVolProtectionAction ) list -> volumeType [ ListExtension -> nDosDriveNo ] = PROP_VOL_TYPE_OUTER_VOL_WRITE_PREVENTED ; else if ( ListExtension -> cryptoInfo -> bProtectHiddenVolume ) list -> volumeType [ ListExtension -> nDosDriveNo ] = PROP_VOL_TYPE_OUTER ; else list -> volumeType [ ListExtension -> nDosDriveNo ] = PROP_VOL_TYPE_NORMAL ; list -> truecryptMode [ ListExtension -> nDosDriveNo ] = ListExtension -> cryptoInfo -> bTrueCryptMode ; } } Irp -> IoStatus . Status = STATUS_SUCCESS ; Irp -> IoStatus . Information = sizeof ( MOUNT_LIST_STRUCT ) ; } break ; case TC_IOCTL_LEGACY_GET_MOUNTED_VOLUMES : if ( ValidateIOBufferSize ( Irp , sizeof ( uint32 ) , ValidateOutput ) ) { memset ( Irp -> AssociatedIrp . SystemBuffer , 0 , irpSp -> Parameters . DeviceIoControl . OutputBufferLength ) ; * ( uint32 * ) Irp -> AssociatedIrp . SystemBuffer = 0xffffFFFF ; Irp -> IoStatus . Status = STATUS_SUCCESS ; Irp -> IoStatus . Information = irpSp -> Parameters . DeviceIoControl . OutputBufferLength ; } break ; case TC_IOCTL_GET_VOLUME_PROPERTIES : if ( ValidateIOBufferSize ( Irp , sizeof ( VOLUME_PROPERTIES_STRUCT ) , ValidateInputOutput ) ) { VOLUME_PROPERTIES_STRUCT * prop = ( VOLUME_PROPERTIES_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; PDEVICE_OBJECT ListDevice = GetVirtualVolumeDeviceObject ( prop -> driveNo ) ; Irp -> IoStatus . Status = STATUS_INVALID_PARAMETER ; Irp -> IoStatus . Information = 0 ; if ( ListDevice ) { PEXTENSION ListExtension = ( PEXTENSION ) ListDevice -> DeviceExtension ; if ( IsVolumeAccessibleByCurrentUser ( ListExtension ) ) { prop -> uniqueId = ListExtension -> UniqueVolumeId ; RtlStringCbCopyW ( prop -> wszVolume , sizeof ( prop -> wszVolume ) , ListExtension -> wszVolume ) ; RtlStringCbCopyW ( prop -> wszLabel , sizeof ( prop -> wszLabel ) , ListExtension -> wszLabel ) ; memcpy ( prop -> volumeID , ListExtension -> volumeID , VOLUME_ID_SIZE ) ; prop -> bDriverSetLabel = ListExtension -> bDriverSetLabel ; prop -> diskLength = ListExtension -> DiskLength ; prop -> ea = ListExtension -> cryptoInfo -> ea ; prop -> mode = ListExtension -> cryptoInfo -> mode ; prop -> pkcs5 = ListExtension -> cryptoInfo -> pkcs5 ; prop -> pkcs5Iterations = ListExtension -> cryptoInfo -> noIterations ; prop -> volumePim = ListExtension -> cryptoInfo -> volumePim ; # if 0 prop -> volumeCreationTime = ListExtension -> cryptoInfo -> volume_creation_time ; prop -> headerCreationTime = ListExtension -> cryptoInfo -> header_creation_time ; # endif prop -> volumeHeaderFlags = ListExtension -> cryptoInfo -> HeaderFlags ; prop -> readOnly = ListExtension -> bReadOnly ; prop -> removable = ListExtension -> bRemovable ; prop -> partitionInInactiveSysEncScope = ListExtension -> PartitionInInactiveSysEncScope ; prop -> hiddenVolume = ListExtension -> cryptoInfo -> hiddenVolume ; if ( ListExtension -> cryptoInfo -> bProtectHiddenVolume ) prop -> hiddenVolProtection = ListExtension -> cryptoInfo -> bHiddenVolProtectionAction ? HIDVOL_PROT_STATUS_ACTION_TAKEN : HIDVOL_PROT_STATUS_ACTIVE ; else prop -> hiddenVolProtection = HIDVOL_PROT_STATUS_NONE ; prop -> totalBytesRead = ListExtension -> Queue . TotalBytesRead ; prop -> totalBytesWritten = ListExtension -> Queue . TotalBytesWritten ; prop -> volFormatVersion = ListExtension -> cryptoInfo -> LegacyVolume ? TC_VOLUME_FORMAT_VERSION_PRE_6_0 : TC_VOLUME_FORMAT_VERSION ; Irp -> IoStatus . Status = STATUS_SUCCESS ; Irp -> IoStatus . Information = sizeof ( VOLUME_PROPERTIES_STRUCT ) ; } } } break ; case TC_IOCTL_GET_RESOLVED_SYMLINK : if ( ValidateIOBufferSize ( Irp , sizeof ( RESOLVE_SYMLINK_STRUCT ) , ValidateInputOutput ) ) { RESOLVE_SYMLINK_STRUCT * resolve = ( RESOLVE_SYMLINK_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; { NTSTATUS ntStatus ; EnsureNullTerminatedString ( resolve -> symLinkName , sizeof ( resolve -> symLinkName ) ) ; ntStatus = SymbolicLinkToTarget ( resolve -> symLinkName , resolve -> targetName , sizeof ( resolve -> targetName ) ) ; Irp -> IoStatus . Information = sizeof ( RESOLVE_SYMLINK_STRUCT ) ; Irp -> IoStatus . Status = ntStatus ; } } break ; case TC_IOCTL_GET_DRIVE_PARTITION_INFO : if ( ValidateIOBufferSize ( Irp , sizeof ( DISK_PARTITION_INFO_STRUCT ) , ValidateInputOutput ) ) { DISK_PARTITION_INFO_STRUCT * info = ( DISK_PARTITION_INFO_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; { PARTITION_INFORMATION_EX pi ; NTSTATUS ntStatus ; EnsureNullTerminatedString ( info -> deviceName , sizeof ( info -> deviceName ) ) ; ntStatus = TCDeviceIoControl ( info -> deviceName , IOCTL_DISK_GET_PARTITION_INFO_EX , NULL , 0 , & pi , sizeof ( pi ) ) ; if ( NT_SUCCESS ( ntStatus ) ) { memset ( & info -> partInfo , 0 , sizeof ( info -> partInfo ) ) ; info -> partInfo . PartitionLength = pi . PartitionLength ; info -> partInfo . PartitionNumber = pi . PartitionNumber ; info -> partInfo . StartingOffset = pi . StartingOffset ; if ( pi . PartitionStyle == PARTITION_STYLE_MBR ) { info -> partInfo . PartitionType = pi . Mbr . PartitionType ; info -> partInfo . BootIndicator = pi . Mbr . BootIndicator ; } info -> IsGPT = pi . PartitionStyle == PARTITION_STYLE_GPT ; } else { ntStatus = TCDeviceIoControl ( info -> deviceName , IOCTL_DISK_GET_PARTITION_INFO , NULL , 0 , & info -> partInfo , sizeof ( info -> partInfo ) ) ; info -> IsGPT = FALSE ; } if ( ! NT_SUCCESS ( ntStatus ) ) { GET_LENGTH_INFORMATION lengthInfo ; ntStatus = TCDeviceIoControl ( info -> deviceName , IOCTL_DISK_GET_LENGTH_INFO , NULL , 0 , & lengthInfo , sizeof ( lengthInfo ) ) ; if ( NT_SUCCESS ( ntStatus ) ) { memset ( & info -> partInfo , 0 , sizeof ( info -> partInfo ) ) ; info -> partInfo . PartitionLength = lengthInfo . Length ; } } info -> IsDynamic = FALSE ; if ( NT_SUCCESS ( ntStatus ) && OsMajorVersion >= 6 ) { # define IOCTL_VOLUME_IS_DYNAMIC CTL_CODE ( IOCTL_VOLUME_BASE , 18 , METHOD_BUFFERED , FILE_ANY_ACCESS ) if ( ! NT_SUCCESS ( TCDeviceIoControl ( info -> deviceName , IOCTL_VOLUME_IS_DYNAMIC , NULL , 0 , & info -> IsDynamic , sizeof ( info -> IsDynamic ) ) ) ) info -> IsDynamic = FALSE ; } Irp -> IoStatus . Information = sizeof ( DISK_PARTITION_INFO_STRUCT ) ; Irp -> IoStatus . Status = ntStatus ; } } break ; case TC_IOCTL_GET_DRIVE_GEOMETRY : if ( ValidateIOBufferSize ( Irp , sizeof ( DISK_GEOMETRY_STRUCT ) , ValidateInputOutput ) ) { DISK_GEOMETRY_STRUCT * g = ( DISK_GEOMETRY_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; { NTSTATUS ntStatus ; EnsureNullTerminatedString ( g -> deviceName , sizeof ( g -> deviceName ) ) ; Dump ( \"Calling<S2SV_blank>IOCTL_DISK_GET_DRIVE_GEOMETRY<S2SV_blank>on<S2SV_blank>%ls\\\\n\" , g -> deviceName ) ; ntStatus = TCDeviceIoControl ( g -> deviceName , IOCTL_DISK_GET_DRIVE_GEOMETRY , NULL , 0 , & g -> diskGeometry , sizeof ( g -> diskGeometry ) ) ; Irp -> IoStatus . Information = sizeof ( DISK_GEOMETRY_STRUCT ) ; Irp -> IoStatus . Status = ntStatus ; } } break ; case VC_IOCTL_GET_DRIVE_GEOMETRY_EX : if ( ValidateIOBufferSize ( Irp , sizeof ( DISK_GEOMETRY_EX_STRUCT ) , ValidateInputOutput ) ) { DISK_GEOMETRY_EX_STRUCT * g = ( DISK_GEOMETRY_EX_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; { NTSTATUS ntStatus ; PVOID buffer = TCalloc ( 256 ) ; if ( buffer ) { EnsureNullTerminatedString ( g -> deviceName , sizeof ( g -> deviceName ) ) ; Dump ( \"Calling<S2SV_blank>IOCTL_DISK_GET_DRIVE_GEOMETRY_EX<S2SV_blank>on<S2SV_blank>%ls\\\\n\" , g -> deviceName ) ; ntStatus = TCDeviceIoControl ( g -> deviceName , IOCTL_DISK_GET_DRIVE_GEOMETRY_EX , NULL , 0 , buffer , 256 ) ; if ( NT_SUCCESS ( ntStatus ) ) { PDISK_GEOMETRY_EX pGeo = ( PDISK_GEOMETRY_EX ) buffer ; memcpy ( & g -> diskGeometry , & pGeo -> Geometry , sizeof ( DISK_GEOMETRY ) ) ; g -> DiskSize . QuadPart = pGeo -> DiskSize . QuadPart ; } else { DISK_GEOMETRY dg = { 0 } ; Dump ( \"Failed.<S2SV_blank>Calling<S2SV_blank>IOCTL_DISK_GET_DRIVE_GEOMETRY<S2SV_blank>on<S2SV_blank>%ls\\\\n\" , g -> deviceName ) ; ntStatus = TCDeviceIoControl ( g -> deviceName , IOCTL_DISK_GET_DRIVE_GEOMETRY , NULL , 0 , & dg , sizeof ( dg ) ) ; if ( NT_SUCCESS ( ntStatus ) ) { memcpy ( & g -> diskGeometry , & dg , sizeof ( DISK_GEOMETRY ) ) ; g -> DiskSize . QuadPart = dg . Cylinders . QuadPart * dg . SectorsPerTrack * dg . TracksPerCylinder * dg . BytesPerSector ; if ( OsMajorVersion >= 6 ) { STORAGE_READ_CAPACITY storage = { 0 } ; NTSTATUS lStatus ; storage . Version = sizeof ( STORAGE_READ_CAPACITY ) ; Dump ( \"Calling<S2SV_blank>IOCTL_STORAGE_READ_CAPACITY<S2SV_blank>on<S2SV_blank>%ls\\\\n\" , g -> deviceName ) ; lStatus = TCDeviceIoControl ( g -> deviceName , IOCTL_STORAGE_READ_CAPACITY , NULL , 0 , & storage , sizeof ( STORAGE_READ_CAPACITY ) ) ; if ( NT_SUCCESS ( lStatus ) && ( storage . Size == sizeof ( STORAGE_READ_CAPACITY ) ) ) { g -> DiskSize . QuadPart = storage . DiskLength . QuadPart ; } } } } TCfree ( buffer ) ; Irp -> IoStatus . Information = sizeof ( DISK_GEOMETRY_EX_STRUCT ) ; Irp -> IoStatus . Status = ntStatus ; } else { Irp -> IoStatus . Status = STATUS_INSUFFICIENT_RESOURCES ; Irp -> IoStatus . Information = 0 ; } } } break ; case TC_IOCTL_PROBE_REAL_DRIVE_SIZE : if ( ValidateIOBufferSize ( Irp , sizeof ( ProbeRealDriveSizeRequest ) , ValidateInputOutput ) ) { ProbeRealDriveSizeRequest * request = ( ProbeRealDriveSizeRequest * ) Irp -> AssociatedIrp . SystemBuffer ; NTSTATUS status ; UNICODE_STRING name ; PFILE_OBJECT fileObject ; PDEVICE_OBJECT deviceObject ; EnsureNullTerminatedString ( request -> DeviceName , sizeof ( request -> DeviceName ) ) ; RtlInitUnicodeString ( & name , request -> DeviceName ) ; status = IoGetDeviceObjectPointer ( & name , FILE_READ_ATTRIBUTES , & fileObject , & deviceObject ) ; if ( ! NT_SUCCESS ( status ) ) { Irp -> IoStatus . Information = 0 ; Irp -> IoStatus . Status = status ; break ; } status = ProbeRealDriveSize ( deviceObject , & request -> RealDriveSize ) ; ObDereferenceObject ( fileObject ) ; if ( status == STATUS_TIMEOUT ) { request -> TimeOut = TRUE ; Irp -> IoStatus . Information = sizeof ( ProbeRealDriveSizeRequest ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } else if ( ! NT_SUCCESS ( status ) ) { Irp -> IoStatus . Information = 0 ; Irp -> IoStatus . Status = status ; } else { request -> TimeOut = FALSE ; Irp -> IoStatus . Information = sizeof ( ProbeRealDriveSizeRequest ) ; Irp -> IoStatus . Status = status ; } } break ; case TC_IOCTL_MOUNT_VOLUME : if ( ValidateIOBufferSize ( Irp , sizeof ( MOUNT_STRUCT ) , ValidateInputOutput ) ) { MOUNT_STRUCT * mount = ( MOUNT_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; if ( mount -> VolumePassword . Length > MAX_PASSWORD || mount -> ProtectedHidVolPassword . Length > MAX_PASSWORD || mount -> pkcs5_prf < 0 || mount -> pkcs5_prf > LAST_PRF_ID || mount -> VolumePim < - 1 || mount -> VolumePim == INT_MAX || mount -> ProtectedHidVolPkcs5Prf < 0 || mount -> ProtectedHidVolPkcs5Prf > LAST_PRF_ID || ( mount -> bTrueCryptMode != FALSE && mount -> bTrueCryptMode != TRUE ) ) { Irp -> IoStatus . Status = STATUS_INVALID_PARAMETER ; Irp -> IoStatus . Information = 0 ; break ; } EnsureNullTerminatedString ( mount -> wszVolume , sizeof ( mount -> wszVolume ) ) ; EnsureNullTerminatedString ( mount -> wszLabel , sizeof ( mount -> wszLabel ) ) ; Irp -> IoStatus . Information = sizeof ( MOUNT_STRUCT ) ; Irp -> IoStatus . Status = MountDevice ( DeviceObject , mount ) ; burn ( & mount -> VolumePassword , sizeof ( mount -> VolumePassword ) ) ; burn ( & mount -> ProtectedHidVolPassword , sizeof ( mount -> ProtectedHidVolPassword ) ) ; burn ( & mount -> pkcs5_prf , sizeof ( mount -> pkcs5_prf ) ) ; burn ( & mount -> VolumePim , sizeof ( mount -> VolumePim ) ) ; burn ( & mount -> bTrueCryptMode , sizeof ( mount -> bTrueCryptMode ) ) ; burn ( & mount -> ProtectedHidVolPkcs5Prf , sizeof ( mount -> ProtectedHidVolPkcs5Prf ) ) ; burn ( & mount -> ProtectedHidVolPim , sizeof ( mount -> ProtectedHidVolPim ) ) ; } break ; case TC_IOCTL_DISMOUNT_VOLUME : if ( ValidateIOBufferSize ( Irp , sizeof ( UNMOUNT_STRUCT ) , ValidateInputOutput ) ) { UNMOUNT_STRUCT * unmount = ( UNMOUNT_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; PDEVICE_OBJECT ListDevice = GetVirtualVolumeDeviceObject ( unmount -> nDosDriveNo ) ; unmount -> nReturnCode = ERR_DRIVE_NOT_FOUND ; if ( ListDevice ) { PEXTENSION ListExtension = ( PEXTENSION ) ListDevice -> DeviceExtension ; if ( IsVolumeAccessibleByCurrentUser ( ListExtension ) ) unmount -> nReturnCode = UnmountDevice ( unmount , ListDevice , unmount -> ignoreOpenFiles ) ; } Irp -> IoStatus . Information = sizeof ( UNMOUNT_STRUCT ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } break ; case TC_IOCTL_DISMOUNT_ALL_VOLUMES : if ( ValidateIOBufferSize ( Irp , sizeof ( UNMOUNT_STRUCT ) , ValidateInputOutput ) ) { UNMOUNT_STRUCT * unmount = ( UNMOUNT_STRUCT * ) Irp -> AssociatedIrp . SystemBuffer ; unmount -> nReturnCode = UnmountAllDevices ( unmount , unmount -> ignoreOpenFiles ) ; Irp -> IoStatus . Information = sizeof ( UNMOUNT_STRUCT ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } break ; case TC_IOCTL_BOOT_ENCRYPTION_SETUP : Irp -> IoStatus . Status = StartBootEncryptionSetup ( DeviceObject , Irp , irpSp ) ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_ABORT_BOOT_ENCRYPTION_SETUP : Irp -> IoStatus . Status = AbortBootEncryptionSetup ( ) ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_GET_BOOT_ENCRYPTION_STATUS : GetBootEncryptionStatus ( Irp , irpSp ) ; break ; case TC_IOCTL_GET_BOOT_ENCRYPTION_SETUP_RESULT : Irp -> IoStatus . Information = 0 ; Irp -> IoStatus . Status = GetSetupResult ( ) ; break ; case TC_IOCTL_GET_BOOT_DRIVE_VOLUME_PROPERTIES : GetBootDriveVolumeProperties ( Irp , irpSp ) ; break ; case TC_IOCTL_GET_BOOT_LOADER_VERSION : GetBootLoaderVersion ( Irp , irpSp ) ; break ; case TC_IOCTL_REOPEN_BOOT_VOLUME_HEADER : ReopenBootVolumeHeader ( Irp , irpSp ) ; break ; case VC_IOCTL_GET_BOOT_LOADER_FINGERPRINT : GetBootLoaderFingerprint ( Irp , irpSp ) ; break ; case TC_IOCTL_GET_BOOT_ENCRYPTION_ALGORITHM_NAME : GetBootEncryptionAlgorithmName ( Irp , irpSp ) ; break ; case TC_IOCTL_IS_HIDDEN_SYSTEM_RUNNING : if ( ValidateIOBufferSize ( Irp , sizeof ( int ) , ValidateOutput ) ) { * ( int * ) Irp -> AssociatedIrp . SystemBuffer = IsHiddenSystemRunning ( ) ? 1 : 0 ; Irp -> IoStatus . Information = sizeof ( int ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } break ; case TC_IOCTL_START_DECOY_SYSTEM_WIPE : Irp -> IoStatus . Status = StartDecoySystemWipe ( DeviceObject , Irp , irpSp ) ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_ABORT_DECOY_SYSTEM_WIPE : Irp -> IoStatus . Status = AbortDecoySystemWipe ( ) ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_GET_DECOY_SYSTEM_WIPE_RESULT : Irp -> IoStatus . Status = GetDecoySystemWipeResult ( ) ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_GET_DECOY_SYSTEM_WIPE_STATUS : GetDecoySystemWipeStatus ( Irp , irpSp ) ; break ; case TC_IOCTL_WRITE_BOOT_DRIVE_SECTOR : Irp -> IoStatus . Status = WriteBootDriveSector ( Irp , irpSp ) ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_GET_WARNING_FLAGS : if ( ValidateIOBufferSize ( Irp , sizeof ( GetWarningFlagsRequest ) , ValidateOutput ) ) { GetWarningFlagsRequest * flags = ( GetWarningFlagsRequest * ) Irp -> AssociatedIrp . SystemBuffer ; flags -> PagingFileCreationPrevented = PagingFileCreationPrevented ; PagingFileCreationPrevented = FALSE ; flags -> SystemFavoriteVolumeDirty = SystemFavoriteVolumeDirty ; SystemFavoriteVolumeDirty = FALSE ; Irp -> IoStatus . Information = sizeof ( GetWarningFlagsRequest ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } break ; case TC_IOCTL_SET_SYSTEM_FAVORITE_VOLUME_DIRTY : if ( UserCanAccessDriveDevice ( ) ) { SystemFavoriteVolumeDirty = TRUE ; Irp -> IoStatus . Status = STATUS_SUCCESS ; } else Irp -> IoStatus . Status = STATUS_ACCESS_DENIED ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_REREAD_DRIVER_CONFIG : Irp -> IoStatus . Status = ReadRegistryConfigFlags ( FALSE ) ; Irp -> IoStatus . Information = 0 ; break ; case TC_IOCTL_GET_SYSTEM_DRIVE_DUMP_CONFIG : if ( ( ValidateIOBufferSize ( Irp , sizeof ( GetSystemDriveDumpConfigRequest ) , ValidateOutput ) ) && ( Irp -> RequestorMode == KernelMode ) ) { GetSystemDriveDumpConfigRequest * request = ( GetSystemDriveDumpConfigRequest * ) Irp -> AssociatedIrp . SystemBuffer ; request -> BootDriveFilterExtension = GetBootDriveFilterExtension ( ) ; if ( IsBootDriveMounted ( ) && request -> BootDriveFilterExtension ) { request -> HwEncryptionEnabled = IsHwEncryptionEnabled ( ) ; Irp -> IoStatus . Status = STATUS_SUCCESS ; Irp -> IoStatus . Information = sizeof ( * request ) ; } else { Irp -> IoStatus . Status = STATUS_INVALID_PARAMETER ; Irp -> IoStatus . Information = 0 ; } } break ; default : return TCCompleteIrp ( Irp , STATUS_INVALID_DEVICE_REQUEST , 0 ) ; } # if defined ( DEBUG ) || defined ( DEBUG_TRACE ) if ( ! NT_SUCCESS ( Irp -> IoStatus . Status ) ) { switch ( irpSp -> Parameters . DeviceIoControl . IoControlCode ) { case TC_IOCTL_GET_MOUNTED_VOLUMES : case TC_IOCTL_GET_PASSWORD_CACHE_STATUS : case TC_IOCTL_GET_PORTABLE_MODE_STATUS : case TC_IOCTL_SET_PORTABLE_MODE_STATUS : case TC_IOCTL_OPEN_TEST : case TC_IOCTL_GET_RESOLVED_SYMLINK : case TC_IOCTL_GET_DRIVE_PARTITION_INFO : case TC_IOCTL_GET_BOOT_DRIVE_VOLUME_PROPERTIES : case TC_IOCTL_GET_BOOT_ENCRYPTION_STATUS : case TC_IOCTL_IS_HIDDEN_SYSTEM_RUNNING : break ; default : Dump ( \"IOCTL<S2SV_blank>error<S2SV_blank>0x%08x\\\\n\" , Irp -> IoStatus . Status ) ; } } # endif return TCCompleteIrp ( Irp , Irp -> IoStatus . Status , Irp -> IoStatus . Information ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> LARGE_INTEGER offset ; size_t devicePathLen = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) break ; if ( ! NT_SUCCESS ( RtlUnalignedStringCchLengthW ( request -> DevicePath , TC_MAX_PATH , & devicePathLen ) ) || ( devicePathLen < 28 ) || ( devicePathLen > 30 ) || ( memcmp ( request -> DevicePath , L\"\\\\\\\\Device\\\\\\\\Harddisk\" , 16 * sizeof ( WCHAR ) ) ) || ( memcmp ( & request -> DevicePath [ devicePathLen - 11 ] , L\"\\\\\\\\Partition0\" , 11 * sizeof ( WCHAR ) ) ) ) { Irp -> IoStatus . Status = STATUS_INVALID_PARAMETER ; Irp -> IoStatus . Information = 0 ; break ; } <S2SV_ModStart> ) ) { byte * readBuffer = TCalloc ( TC_MAX_VOLUME_SECTOR_SIZE ) ; if ( ! readBuffer ) { Irp -> IoStatus . Status = STATUS_INSUFFICIENT_RESOURCES ; Irp -> IoStatus . Information = 0 ; } else { <S2SV_ModStart> , readBuffer , TC_MAX_VOLUME_SECTOR_SIZE <S2SV_ModEnd> , & offset <S2SV_ModStart> ( ntStatus ) ) { if ( IoStatus . Information >= TC_SECTOR_SIZE_BIOS <S2SV_ModStart> . Status = STATUS_INVALID_PARAMETER ; Irp -> IoStatus . Information = 0 ; } } else { Irp -> IoStatus . Status = <S2SV_ModStart> Information = 0 ; } TCfree ( readBuffer )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6549\n\n```\nCWE-200 static int isofs_export_encode_fh ( struct inode * inode , __u32 * fh32 , int * max_len , struct inode * parent ) { struct iso_inode_info * ei = ISOFS_I ( inode ) ; int len = * max_len ; int type = 1 ; __u16 * fh16 = ( __u16 * ) fh32 ; if ( parent && ( len < 5 ) ) { * max_len = 5 ; return 255 ; } else if ( len < 3 ) { * max_len = 3 ; return 255 ; } len = 3 ; fh32 [ 0 ] = ei -> i_iget5_block ; fh16 [ 2 ] = ( __u16 ) ei -> i_iget5_offset ; <S2SV_StartBug> fh32 [ 2 ] = inode -> i_generation ; <S2SV_EndBug> if ( parent ) { struct iso_inode_info * eparent ; eparent = ISOFS_I ( parent ) ; fh32 [ 3 ] = eparent -> i_iget5_block ; fh16 [ 3 ] = ( __u16 ) eparent -> i_iget5_offset ; fh32 [ 4 ] = parent -> i_generation ; len = 5 ; type = 2 ; } * max_len = len ; return type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> i_iget5_offset ; fh16 [ 3 ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int inet_sk_rebuild_header ( struct sock * sk ) { struct inet_sock * inet = inet_sk ( sk ) ; struct rtable * rt = ( struct rtable * ) __sk_dst_check ( sk , 0 ) ; __be32 daddr ; <S2SV_StartBug> int err ; <S2SV_EndBug> if ( rt ) return 0 ; <S2SV_StartBug> daddr = inet -> inet_daddr ; <S2SV_EndBug> <S2SV_StartBug> if ( inet -> opt && inet -> opt -> srr ) <S2SV_EndBug> daddr = inet -> opt -> faddr ; rt = ip_route_output_ports ( sock_net ( sk ) , sk , daddr , inet -> inet_saddr , inet -> inet_dport , inet -> inet_sport , sk -> sk_protocol , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if ) ; if ( ! IS_ERR ( rt ) ) { err = 0 ; sk_setup_caps ( sk , & rt -> dst ) ; } else { err = PTR_ERR ( rt ) ; sk -> sk_route_caps = 0 ; if ( ! sysctl_ip_dynaddr || sk -> sk_state != TCP_SYN_SENT || ( sk -> sk_userlocks & SOCK_BINDADDR_LOCK ) || ( err = inet_sk_reselect_saddr ( sk ) ) != 0 ) sk -> sk_err_soft = - err ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> __be32 daddr ; struct ip_options_rcu * inet_opt ; <S2SV_ModStart> return 0 ; rcu_read_lock ( ) ; inet_opt = rcu_dereference ( inet -> inet_opt ) ; <S2SV_ModStart> ; if ( inet_opt && inet_opt -> opt . srr ) daddr = inet_opt -> opt . faddr ; rcu_read_unlock ( ) <S2SV_ModEnd> ; rt =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10147\n\n```\nCWE-476 <S2SV_StartBug> static inline void mcryptd_check_internal ( struct rtattr * * tb , u32 * type , <S2SV_EndBug> u32 * mask ) { struct crypto_attr_type * algt ; algt = crypto_get_attr_type ( tb ) ; if ( IS_ERR ( algt ) ) <S2SV_StartBug> return ; <S2SV_EndBug> <S2SV_StartBug> if ( ( algt -> type & CRYPTO_ALG_INTERNAL ) ) <S2SV_EndBug> * type |= CRYPTO_ALG_INTERNAL ; <S2SV_StartBug> if ( ( algt -> mask & CRYPTO_ALG_INTERNAL ) ) <S2SV_EndBug> * mask |= CRYPTO_ALG_INTERNAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static inline bool <S2SV_ModEnd> mcryptd_check_internal ( struct <S2SV_ModStart> ) ) return false ; * type |= <S2SV_ModEnd> algt -> type <S2SV_ModStart> type & CRYPTO_ALG_INTERNAL ; * mask |= algt -> mask & <S2SV_ModEnd> CRYPTO_ALG_INTERNAL ; if <S2SV_ModStart> ; if ( * type & * <S2SV_ModEnd> mask & CRYPTO_ALG_INTERNAL <S2SV_ModStart> & CRYPTO_ALG_INTERNAL ) return true ; else return false <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2463\n\n```\nCWE-119 <S2SV_StartBug> void * H264SwDecMalloc ( u32 size ) { <S2SV_EndBug> <S2SV_StartBug> return malloc ( size ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( u32 size , u32 num ) { if ( size > UINT32_MAX / num ) { ALOGE ( \"can\\'t<S2SV_blank>allocate<S2SV_blank>%u<S2SV_blank>*<S2SV_blank>%u<S2SV_blank>bytes\" , size , num ) ; android_errorWriteLog ( 0x534e4554 , \"27855419\" ) ; return NULL ; } <S2SV_ModEnd> return malloc ( <S2SV_ModStart> malloc ( size * num\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3137\n\n```\nCWE-000 static int cypress_generic_port_probe ( struct usb_serial_port * port ) { struct usb_serial * serial = port -> serial ; struct cypress_private * priv ; <S2SV_StartBug> priv = kzalloc ( sizeof ( struct cypress_private ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! priv ) return - ENOMEM ; priv -> comm_is_ok = ! 0 ; spin_lock_init ( & priv -> lock ) ; if ( kfifo_alloc ( & priv -> write_fifo , CYPRESS_BUF_SIZE , GFP_KERNEL ) ) { kfree ( priv ) ; return - ENOMEM ; } if ( ! is_frwd ( serial -> dev ) ) usb_reset_configuration ( serial -> dev ) ; priv -> cmd_ctrl = 0 ; priv -> line_control = 0 ; priv -> termios_initialized = 0 ; priv -> rx_flags = 0 ; if ( port -> interrupt_out_size > 9 ) priv -> pkt_fmt = packet_format_1 ; else priv -> pkt_fmt = packet_format_2 ; if ( interval > 0 ) { priv -> write_urb_interval = interval ; priv -> read_urb_interval = interval ; dev_dbg ( & port -> dev , \"%s<S2SV_blank>-<S2SV_blank>read<S2SV_blank>&<S2SV_blank>write<S2SV_blank>intervals<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>%d\\\\n\" , __func__ , interval ) ; } else { priv -> write_urb_interval = port -> interrupt_out_urb -> interval ; priv -> read_urb_interval = port -> interrupt_in_urb -> interval ; dev_dbg ( & port -> dev , \"%s<S2SV_blank>-<S2SV_blank>intervals:<S2SV_blank>read=%d<S2SV_blank>write=%d\\\\n\" , __func__ , priv -> read_urb_interval , priv -> write_urb_interval ) ; } usb_set_serial_port_data ( port , priv ) ; port -> port . drain_delay = 256 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * priv ; if ( ! port -> interrupt_out_urb || ! port -> interrupt_in_urb ) { dev_err ( & port -> dev , \"required<S2SV_blank>endpoint<S2SV_blank>is<S2SV_blank>missing\\\\n\" ) ; return - ENODEV ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5356\n\n```\nCWE-119 static gboolean parse_cosine_packet ( FILE_T fh , struct wtap_pkthdr * phdr , Buffer * buf , char * line , int * err , gchar * * err_info ) { union wtap_pseudo_header * pseudo_header = & phdr -> pseudo_header ; int num_items_scanned ; <S2SV_StartBug> int yy , mm , dd , hr , min , sec , csec ; <S2SV_EndBug> guint pkt_len ; int pro , off , pri , rm , error ; guint code1 , code2 ; char if_name [ COSINE_MAX_IF_NAME_LEN ] = \"\" , direction [ 6 ] = \"\" ; struct tm tm ; guint8 * pd ; int i , hex_lines , n , caplen = 0 ; if ( sscanf ( line , \"%4d-%2d-%2d,%2d:%2d:%2d.%9d:\" , & yy , & mm , & dd , & hr , & min , & sec , & csec ) == 7 ) { num_items_scanned = sscanf ( line , <S2SV_StartBug> \"%4d-%2d-%2d,%2d:%2d:%2d.%9d:<S2SV_blank>%5s<S2SV_blank>(%127[A-Za-z0-9/:]),<S2SV_blank>Length:%9u,<S2SV_blank>Pro:%9d,<S2SV_blank>Off:%9d,<S2SV_blank>Pri:%9d,<S2SV_blank>RM:%9d,<S2SV_blank>Err:%9d<S2SV_blank>[%8x,<S2SV_blank>%8x]\" , <S2SV_EndBug> & yy , & mm , & dd , & hr , & min , & sec , & csec , direction , if_name , & pkt_len , & pro , & off , & pri , & rm , & error , & code1 , & code2 ) ; if ( num_items_scanned != 17 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"cosine:<S2SV_blank>purported<S2SV_blank>control<S2SV_blank>blade<S2SV_blank>line<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>code<S2SV_blank>values\" ) ; return FALSE ; } } else { num_items_scanned = sscanf ( line , <S2SV_StartBug> \"%5s<S2SV_blank>(%127[A-Za-z0-9/:]),<S2SV_blank>Length:%9u,<S2SV_blank>Pro:%9d,<S2SV_blank>Off:%9d,<S2SV_blank>Pri:%9d,<S2SV_blank>RM:%9d,<S2SV_blank>Err:%9d<S2SV_blank>[%8x,<S2SV_blank>%8x]\" , <S2SV_EndBug> direction , if_name , & pkt_len , & pro , & off , & pri , & rm , & error , & code1 , & code2 ) ; if ( num_items_scanned != 10 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"cosine:<S2SV_blank>header<S2SV_blank>line<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>control<S2SV_blank>blade<S2SV_blank>nor<S2SV_blank>PE<S2SV_blank>output\" ) ; return FALSE ; } <S2SV_StartBug> yy = mm = dd = hr = min = sec = csec = 0 ; <S2SV_EndBug> } if ( pkt_len > WTAP_MAX_PACKET_SIZE ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup_printf ( \"cosine:<S2SV_blank>File<S2SV_blank>has<S2SV_blank>%u-byte<S2SV_blank>packet,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>maximum<S2SV_blank>of<S2SV_blank>%u\" , pkt_len , WTAP_MAX_PACKET_SIZE ) ; return FALSE ; } phdr -> rec_type = REC_TYPE_PACKET ; phdr -> presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN ; tm . tm_year = yy - 1900 ; tm . tm_mon = mm - 1 ; tm . tm_mday = dd ; tm . tm_hour = hr ; tm . tm_min = min ; tm . tm_sec = sec ; tm . tm_isdst = - 1 ; phdr -> ts . secs = mktime ( & tm ) ; phdr -> ts . nsecs = csec * 10000000 ; phdr -> len = pkt_len ; if ( strncmp ( if_name , \"TEST:\" , 5 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_TEST ; } else if ( strncmp ( if_name , \"PPoATM:\" , 7 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_PPoATM ; } else if ( strncmp ( if_name , \"PPoFR:\" , 6 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_PPoFR ; } else if ( strncmp ( if_name , \"ATM:\" , 4 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_ATM ; } else if ( strncmp ( if_name , \"FR:\" , 3 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_FR ; } else if ( strncmp ( if_name , \"HDLC:\" , 5 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_HDLC ; } else if ( strncmp ( if_name , \"PPP:\" , 4 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_PPP ; } else if ( strncmp ( if_name , \"ETH:\" , 4 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_ETH ; } else { pseudo_header -> cosine . encap = COSINE_ENCAP_UNKNOWN ; } if ( strncmp ( direction , \"l2-tx\" , 5 ) == 0 ) { pseudo_header -> cosine . direction = COSINE_DIR_TX ; } else if ( strncmp ( direction , \"l2-rx\" , 5 ) == 0 ) { pseudo_header -> cosine . direction = COSINE_DIR_RX ; } g_strlcpy ( pseudo_header -> cosine . if_name , if_name , COSINE_MAX_IF_NAME_LEN ) ; pseudo_header -> cosine . pro = pro ; pseudo_header -> cosine . off = off ; pseudo_header -> cosine . pri = pri ; pseudo_header -> cosine . rm = rm ; pseudo_header -> cosine . err = error ; ws_buffer_assure_space ( buf , pkt_len ) ; pd = ws_buffer_start_ptr ( buf ) ; hex_lines = pkt_len / 16 + ( ( pkt_len % 16 ) ? 1 : 0 ) ; for ( i = 0 ; i < hex_lines ; i ++ ) { if ( file_gets ( line , COSINE_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } if ( empty_line ( line ) ) { break ; } if ( ( n = parse_single_hex_dump_line ( line , pd , i * 16 ) ) == - 1 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"cosine:<S2SV_blank>hex<S2SV_blank>dump<S2SV_blank>line<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>16<S2SV_blank>numbers\" ) ; return FALSE ; } caplen += n ; } phdr -> caplen = caplen ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sec , csec , <S2SV_ModEnd> pkt_len ; int <S2SV_ModStart> ( line , \"%4d-%2d-%2d,%2d:%2d:%2d.%9d:<S2SV_blank>%5s<S2SV_blank>(%127[A-Za-z0-9/:]),<S2SV_blank>Length:%9d,<S2SV_blank>Pro:%9d,<S2SV_blank>Off:%9d,<S2SV_blank>Pri:%9d,<S2SV_blank>RM:%9d,<S2SV_blank>Err:%9d<S2SV_blank>[%8x,<S2SV_blank>%8x]\" <S2SV_ModEnd> , & yy <S2SV_ModStart> ( line , \"%5s<S2SV_blank>(%127[A-Za-z0-9/:]),<S2SV_blank>Length:%9d,<S2SV_blank>Pro:%9d,<S2SV_blank>Off:%9d,<S2SV_blank>Pri:%9d,<S2SV_blank>RM:%9d,<S2SV_blank>Err:%9d<S2SV_blank>[%8x,<S2SV_blank>%8x]\" <S2SV_ModEnd> , direction , <S2SV_ModStart> csec = 0 ; } if ( pkt_len < 0 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"cosine:<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>has<S2SV_blank>a<S2SV_blank>negative<S2SV_blank>packet<S2SV_blank>length\" ) ; return FALSE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13031\n\n```\nCWE-125 int frag6_print ( netdissect_options * ndo , register const u_char * bp , register const u_char * bp2 ) { register const struct ip6_frag * dp ; register const struct ip6_hdr * ip6 ; dp = ( const struct ip6_frag * ) bp ; ip6 = ( const struct ip6_hdr * ) bp2 ; <S2SV_StartBug> ND_TCHECK ( dp -> ip6f_offlg ) ; <S2SV_EndBug> if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"frag<S2SV_blank>(0x%08x:%d|%ld)\" , EXTRACT_32BITS ( & dp -> ip6f_ident ) , EXTRACT_16BITS ( & dp -> ip6f_offlg ) & IP6F_OFF_MASK , sizeof ( struct ip6_hdr ) + EXTRACT_16BITS ( & ip6 -> ip6_plen ) - ( long ) ( bp - bp2 ) - sizeof ( struct ip6_frag ) ) ) ; } else { ND_PRINT ( ( ndo , \"frag<S2SV_blank>(%d|%ld)\" , EXTRACT_16BITS ( & dp -> ip6f_offlg ) & IP6F_OFF_MASK , sizeof ( struct ip6_hdr ) + EXTRACT_16BITS ( & ip6 -> ip6_plen ) - ( long ) ( bp - bp2 ) - sizeof ( struct ip6_frag ) ) ) ; } if ( ( EXTRACT_16BITS ( & dp -> ip6f_offlg ) & IP6F_OFF_MASK ) != 0 ) return - 1 ; else { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; return sizeof ( struct ip6_frag ) ; } trunc : ND_PRINT ( ( ndo , \"[|frag]\" ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ND_TCHECK ( * dp <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13038\n\n```\nCWE-125 static void handle_mlppp ( netdissect_options * ndo , const u_char * p , int length ) { if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"MLPPP,<S2SV_blank>\" ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"seq<S2SV_blank>0x%03x,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>length<S2SV_blank>%u\" , <S2SV_EndBug> ( EXTRACT_16BITS ( p ) ) & 0x0fff , bittok2str ( ppp_ml_flag_values , \"none\" , * p & 0xc0 ) , length ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( length < 2 ) { ND_PRINT ( ( ndo , \"[|mlppp]\" ) ) ; return ; } if ( ! ND_TTEST_16BITS ( p ) ) { ND_PRINT ( ( ndo , \"[|mlppp]\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2898\n\n```\nCWE-264 static int tpacket_rcv ( struct sk_buff * skb , struct net_device * dev , struct packet_type * pt , struct net_device * orig_dev ) { struct sock * sk ; struct packet_sock * po ; struct sockaddr_ll * sll ; union { struct tpacket_hdr * h1 ; struct tpacket2_hdr * h2 ; void * raw ; } h ; u8 * skb_head = skb -> data ; int skb_len = skb -> len ; unsigned int snaplen , res ; unsigned long status = TP_STATUS_LOSING | TP_STATUS_USER ; unsigned short macoff , netoff , hdrlen ; struct sk_buff * copy_skb = NULL ; struct timeval tv ; struct timespec ts ; struct skb_shared_hwtstamps * shhwtstamps = skb_hwtstamps ( skb ) ; if ( skb -> pkt_type == PACKET_LOOPBACK ) goto drop ; sk = pt -> af_packet_priv ; po = pkt_sk ( sk ) ; if ( ! net_eq ( dev_net ( dev ) , sock_net ( sk ) ) ) goto drop ; if ( dev -> header_ops ) { if ( sk -> sk_type != SOCK_DGRAM ) skb_push ( skb , skb -> data - skb_mac_header ( skb ) ) ; else if ( skb -> pkt_type == PACKET_OUTGOING ) { skb_pull ( skb , skb_network_offset ( skb ) ) ; } } if ( skb -> ip_summed == CHECKSUM_PARTIAL ) status |= TP_STATUS_CSUMNOTREADY ; snaplen = skb -> len ; res = run_filter ( skb , sk , snaplen ) ; if ( ! res ) goto drop_n_restore ; if ( snaplen > res ) snaplen = res ; if ( sk -> sk_type == SOCK_DGRAM ) { macoff = netoff = TPACKET_ALIGN ( po -> tp_hdrlen ) + 16 + po -> tp_reserve ; } else { unsigned maclen = skb_network_offset ( skb ) ; netoff = TPACKET_ALIGN ( po -> tp_hdrlen + ( maclen < 16 ? 16 : maclen ) ) + po -> tp_reserve ; macoff = netoff - maclen ; } if ( macoff + snaplen > po -> rx_ring . frame_size ) { if ( po -> copy_thresh && atomic_read ( & sk -> sk_rmem_alloc ) + skb -> truesize < ( unsigned ) sk -> sk_rcvbuf ) { if ( skb_shared ( skb ) ) { copy_skb = skb_clone ( skb , GFP_ATOMIC ) ; } else { copy_skb = skb_get ( skb ) ; skb_head = skb -> data ; } if ( copy_skb ) skb_set_owner_r ( copy_skb , sk ) ; } snaplen = po -> rx_ring . frame_size - macoff ; if ( ( int ) snaplen < 0 ) snaplen = 0 ; } spin_lock ( & sk -> sk_receive_queue . lock ) ; h . raw = packet_current_frame ( po , & po -> rx_ring , TP_STATUS_KERNEL ) ; if ( ! h . raw ) goto ring_is_full ; packet_increment_head ( & po -> rx_ring ) ; po -> stats . tp_packets ++ ; if ( copy_skb ) { status |= TP_STATUS_COPY ; __skb_queue_tail ( & sk -> sk_receive_queue , copy_skb ) ; } if ( ! po -> stats . tp_drops ) status &= ~ TP_STATUS_LOSING ; spin_unlock ( & sk -> sk_receive_queue . lock ) ; skb_copy_bits ( skb , 0 , h . raw + macoff , snaplen ) ; switch ( po -> tp_version ) { case TPACKET_V1 : h . h1 -> tp_len = skb -> len ; h . h1 -> tp_snaplen = snaplen ; h . h1 -> tp_mac = macoff ; h . h1 -> tp_net = netoff ; if ( ( po -> tp_tstamp & SOF_TIMESTAMPING_SYS_HARDWARE ) && shhwtstamps -> syststamp . tv64 ) tv = ktime_to_timeval ( shhwtstamps -> syststamp ) ; else if ( ( po -> tp_tstamp & SOF_TIMESTAMPING_RAW_HARDWARE ) && shhwtstamps -> hwtstamp . tv64 ) tv = ktime_to_timeval ( shhwtstamps -> hwtstamp ) ; else if ( skb -> tstamp . tv64 ) tv = ktime_to_timeval ( skb -> tstamp ) ; else do_gettimeofday ( & tv ) ; h . h1 -> tp_sec = tv . tv_sec ; h . h1 -> tp_usec = tv . tv_usec ; hdrlen = sizeof ( * h . h1 ) ; break ; case TPACKET_V2 : h . h2 -> tp_len = skb -> len ; h . h2 -> tp_snaplen = snaplen ; h . h2 -> tp_mac = macoff ; h . h2 -> tp_net = netoff ; if ( ( po -> tp_tstamp & SOF_TIMESTAMPING_SYS_HARDWARE ) && shhwtstamps -> syststamp . tv64 ) ts = ktime_to_timespec ( shhwtstamps -> syststamp ) ; else if ( ( po -> tp_tstamp & SOF_TIMESTAMPING_RAW_HARDWARE ) && shhwtstamps -> hwtstamp . tv64 ) ts = ktime_to_timespec ( shhwtstamps -> hwtstamp ) ; else if ( skb -> tstamp . tv64 ) ts = ktime_to_timespec ( skb -> tstamp ) ; else getnstimeofday ( & ts ) ; h . h2 -> tp_sec = ts . tv_sec ; h . h2 -> tp_nsec = ts . tv_nsec ; if ( vlan_tx_tag_present ( skb ) ) { h . h2 -> tp_vlan_tci = vlan_tx_tag_get ( skb ) ; status |= TP_STATUS_VLAN_VALID ; } else { h . h2 -> tp_vlan_tci = 0 ; } <S2SV_StartBug> hdrlen = sizeof ( * h . h2 ) ; <S2SV_EndBug> break ; default : BUG ( ) ; } sll = h . raw + TPACKET_ALIGN ( hdrlen ) ; sll -> sll_halen = dev_parse_header ( skb , sll -> sll_addr ) ; sll -> sll_family = AF_PACKET ; sll -> sll_hatype = dev -> type ; sll -> sll_protocol = skb -> protocol ; sll -> sll_pkttype = skb -> pkt_type ; if ( unlikely ( po -> origdev ) ) sll -> sll_ifindex = orig_dev -> ifindex ; else sll -> sll_ifindex = dev -> ifindex ; __packet_set_status ( po , h . raw , status ) ; smp_mb ( ) ; # if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 1 { u8 * start , * end ; end = ( u8 * ) PAGE_ALIGN ( ( unsigned long ) h . raw + macoff + snaplen ) ; for ( start = h . raw ; start < end ; start += PAGE_SIZE ) flush_dcache_page ( pgv_to_page ( start ) ) ; } # endif sk -> sk_data_ready ( sk , 0 ) ; drop_n_restore : if ( skb_head != skb -> data && skb_shared ( skb ) ) { skb -> data = skb_head ; skb -> len = skb_len ; } drop : kfree_skb ( skb ) ; return 0 ; ring_is_full : po -> stats . tp_drops ++ ; spin_unlock ( & sk -> sk_receive_queue . lock ) ; sk -> sk_data_ready ( sk , 0 ) ; kfree_skb ( copy_skb ) ; goto drop_n_restore ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } h . h2 -> tp_padding = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int get_prediction_error ( BLOCK * be , BLOCKD * b ) { unsigned char * sptr ; unsigned char * dptr ; sptr = ( * ( be -> base_src ) + be -> src ) ; dptr = b -> predictor ; <S2SV_StartBug> return vp8_get4x4sse_cs ( sptr , be -> src_stride , dptr , 16 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> predictor ; return vpx_get4x4sse_cs <S2SV_ModEnd> ( sptr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8645\n\n```\nCWE-284 static int tcp_v6_rcv ( struct sk_buff * skb ) { const struct tcphdr * th ; const struct ipv6hdr * hdr ; bool refcounted ; struct sock * sk ; int ret ; struct net * net = dev_net ( skb -> dev ) ; if ( skb -> pkt_type != PACKET_HOST ) goto discard_it ; __TCP_INC_STATS ( net , TCP_MIB_INSEGS ) ; if ( ! pskb_may_pull ( skb , sizeof ( struct tcphdr ) ) ) goto discard_it ; th = ( const struct tcphdr * ) skb -> data ; if ( unlikely ( th -> doff < sizeof ( struct tcphdr ) / 4 ) ) goto bad_packet ; if ( ! pskb_may_pull ( skb , th -> doff * 4 ) ) goto discard_it ; if ( skb_checksum_init ( skb , IPPROTO_TCP , ip6_compute_pseudo ) ) goto csum_error ; th = ( const struct tcphdr * ) skb -> data ; hdr = ipv6_hdr ( skb ) ; lookup : sk = __inet6_lookup_skb ( & tcp_hashinfo , skb , __tcp_hdrlen ( th ) , th -> source , th -> dest , inet6_iif ( skb ) , & refcounted ) ; if ( ! sk ) goto no_tcp_socket ; process : if ( sk -> sk_state == TCP_TIME_WAIT ) goto do_time_wait ; if ( sk -> sk_state == TCP_NEW_SYN_RECV ) { struct request_sock * req = inet_reqsk ( sk ) ; struct sock * nsk ; sk = req -> rsk_listener ; tcp_v6_fill_cb ( skb , hdr , th ) ; if ( tcp_v6_inbound_md5_hash ( sk , skb ) ) { sk_drops_add ( sk , skb ) ; reqsk_put ( req ) ; goto discard_it ; } if ( unlikely ( sk -> sk_state != TCP_LISTEN ) ) { inet_csk_reqsk_queue_drop_and_put ( sk , req ) ; goto lookup ; } sock_hold ( sk ) ; refcounted = true ; nsk = tcp_check_req ( sk , skb , req , false ) ; if ( ! nsk ) { reqsk_put ( req ) ; goto discard_and_relse ; } if ( nsk == sk ) { reqsk_put ( req ) ; tcp_v6_restore_cb ( skb ) ; } else if ( tcp_child_process ( sk , nsk , skb ) ) { tcp_v6_send_reset ( nsk , skb ) ; goto discard_and_relse ; } else { sock_put ( sk ) ; return 0 ; } } if ( hdr -> hop_limit < inet6_sk ( sk ) -> min_hopcount ) { __NET_INC_STATS ( net , LINUX_MIB_TCPMINTTLDROP ) ; goto discard_and_relse ; } if ( ! xfrm6_policy_check ( sk , XFRM_POLICY_IN , skb ) ) goto discard_and_relse ; tcp_v6_fill_cb ( skb , hdr , th ) ; if ( tcp_v6_inbound_md5_hash ( sk , skb ) ) goto discard_and_relse ; <S2SV_StartBug> if ( sk_filter ( sk , skb ) ) <S2SV_EndBug> <S2SV_StartBug> goto discard_and_relse ; <S2SV_EndBug> skb -> dev = NULL ; if ( sk -> sk_state == TCP_LISTEN ) { ret = tcp_v6_do_rcv ( sk , skb ) ; goto put_and_return ; } sk_incoming_cpu_update ( sk ) ; bh_lock_sock_nested ( sk ) ; tcp_segs_in ( tcp_sk ( sk ) , skb ) ; ret = 0 ; if ( ! sock_owned_by_user ( sk ) ) { if ( ! tcp_prequeue ( sk , skb ) ) ret = tcp_v6_do_rcv ( sk , skb ) ; } else if ( tcp_add_backlog ( sk , skb ) ) { goto discard_and_relse ; } bh_unlock_sock ( sk ) ; put_and_return : if ( refcounted ) sock_put ( sk ) ; return ret ? - 1 : 0 ; no_tcp_socket : if ( ! xfrm6_policy_check ( NULL , XFRM_POLICY_IN , skb ) ) goto discard_it ; tcp_v6_fill_cb ( skb , hdr , th ) ; if ( tcp_checksum_complete ( skb ) ) { csum_error : __TCP_INC_STATS ( net , TCP_MIB_CSUMERRORS ) ; bad_packet : __TCP_INC_STATS ( net , TCP_MIB_INERRS ) ; } else { tcp_v6_send_reset ( NULL , skb ) ; } discard_it : kfree_skb ( skb ) ; return 0 ; discard_and_relse : sk_drops_add ( sk , skb ) ; if ( refcounted ) sock_put ( sk ) ; goto discard_it ; do_time_wait : if ( ! xfrm6_policy_check ( NULL , XFRM_POLICY_IN , skb ) ) { inet_twsk_put ( inet_twsk ( sk ) ) ; goto discard_it ; } tcp_v6_fill_cb ( skb , hdr , th ) ; if ( tcp_checksum_complete ( skb ) ) { inet_twsk_put ( inet_twsk ( sk ) ) ; goto csum_error ; } switch ( tcp_timewait_state_process ( inet_twsk ( sk ) , skb , th ) ) { case TCP_TW_SYN : { struct sock * sk2 ; sk2 = inet6_lookup_listener ( dev_net ( skb -> dev ) , & tcp_hashinfo , skb , __tcp_hdrlen ( th ) , & ipv6_hdr ( skb ) -> saddr , th -> source , & ipv6_hdr ( skb ) -> daddr , ntohs ( th -> dest ) , tcp_v6_iif ( skb ) ) ; if ( sk2 ) { struct inet_timewait_sock * tw = inet_twsk ( sk ) ; inet_twsk_deschedule_put ( tw ) ; sk = sk2 ; tcp_v6_restore_cb ( skb ) ; refcounted = false ; goto process ; } } case TCP_TW_ACK : tcp_v6_timewait_ack ( sk , skb ) ; break ; case TCP_TW_RST : tcp_v6_restore_cb ( skb ) ; tcp_v6_send_reset ( sk , skb ) ; inet_twsk_deschedule_put ( inet_twsk ( sk ) ) ; goto discard_it ; case TCP_TW_SUCCESS : ; } goto discard_it ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( tcp_filter <S2SV_ModEnd> ( sk , <S2SV_ModStart> ) goto discard_and_relse ; th = ( const struct tcphdr * ) skb -> data ; hdr = ipv6_hdr ( skb )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4470\n\n```\nCWE-000 int key_reject_and_link ( struct key * key , unsigned timeout , unsigned error , struct key * keyring , struct key * authkey ) { struct assoc_array_edit * edit ; struct timespec now ; int ret , awaken , link_ret = 0 ; key_check ( key ) ; key_check ( keyring ) ; awaken = 0 ; ret = - EBUSY ; if ( keyring ) { if ( keyring -> restrict_link ) return - EPERM ; link_ret = __key_link_begin ( keyring , & key -> index_key , & edit ) ; } mutex_lock ( & key_construction_mutex ) ; if ( ! test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) { atomic_inc ( & key -> user -> nikeys ) ; key -> reject_error = - error ; smp_wmb ( ) ; set_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ; set_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ; now = current_kernel_time ( ) ; key -> expiry = now . tv_sec + timeout ; key_schedule_gc ( key -> expiry + key_gc_delay ) ; if ( test_and_clear_bit ( KEY_FLAG_USER_CONSTRUCT , & key -> flags ) ) awaken = 1 ; ret = 0 ; if ( keyring && link_ret == 0 ) __key_link ( key , & edit ) ; if ( authkey ) key_revoke ( authkey ) ; } mutex_unlock ( & key_construction_mutex ) ; <S2SV_StartBug> if ( keyring ) <S2SV_EndBug> __key_link_end ( keyring , & key -> index_key , edit ) ; if ( awaken ) wake_up_bit ( & key -> flags , KEY_FLAG_USER_CONSTRUCT ) ; return ret == 0 ? link_ret : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( keyring && link_ret == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12460\n\n```\nCWE-476 av_cold void ff_mpv_idct_init ( MpegEncContext * s ) <S2SV_StartBug> { <S2SV_EndBug> ff_idctdsp_init ( & s -> idsp , s -> avctx ) ; if ( s -> alternate_scan ) { ff_init_scantable ( s -> idsp . idct_permutation , & s -> inter_scantable , ff_alternate_vertical_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_scantable , ff_alternate_vertical_scan ) ; } else { ff_init_scantable ( s -> idsp . idct_permutation , & s -> inter_scantable , ff_zigzag_direct ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_scantable , ff_zigzag_direct ) ; } ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_h_scantable , ff_alternate_horizontal_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_v_scantable , ff_alternate_vertical_scan ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { if ( s -> codec_id == AV_CODEC_ID_MPEG4 ) s -> idsp . mpeg4_studio_profile = s -> studio_profile ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 void WT_InterpolateNoLoop ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame ) { EAS_PCM * pOutputBuffer ; EAS_I32 phaseInc ; EAS_I32 phaseFrac ; EAS_I32 acc0 ; const EAS_SAMPLE * pSamples ; EAS_I32 samp1 ; EAS_I32 samp2 ; EAS_I32 numSamples ; <S2SV_StartBug> numSamples = pWTIntFrame -> numSamples ; <S2SV_EndBug> pOutputBuffer = pWTIntFrame -> pAudioBuffer ; phaseInc = pWTIntFrame -> frame . phaseIncrement ; pSamples = ( const EAS_SAMPLE * ) pWTVoice -> phaseAccum ; phaseFrac = ( EAS_I32 ) pWTVoice -> phaseFrac ; # if defined ( _8_BIT_SAMPLES ) samp1 = pSamples [ 0 ] << 8 ; samp2 = pSamples [ 1 ] << 8 ; # else samp1 = pSamples [ 0 ] ; samp2 = pSamples [ 1 ] ; # endif while ( numSamples -- ) { acc0 = samp2 - samp1 ; acc0 = acc0 * phaseFrac ; acc0 = samp1 + ( acc0 >> NUM_PHASE_FRAC_BITS ) ; * pOutputBuffer ++ = ( EAS_I16 ) ( acc0 >> 2 ) ; phaseFrac += phaseInc ; acc0 = phaseFrac >> NUM_PHASE_FRAC_BITS ; if ( acc0 > 0 ) { pSamples += acc0 ; phaseFrac = ( EAS_I32 ) ( ( EAS_U32 ) phaseFrac & PHASE_FRAC_MASK ) ; # if defined ( _8_BIT_SAMPLES ) samp1 = pSamples [ 0 ] << 8 ; samp2 = pSamples [ 1 ] << 8 ; # else samp1 = pSamples [ 0 ] ; samp2 = pSamples [ 1 ] ; # endif } } pWTVoice -> phaseAccum = ( EAS_U32 ) pSamples ; pWTVoice -> phaseFrac = ( EAS_U32 ) phaseFrac ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> numSamples ; if ( numSamples <= 0 ) { ALOGE ( \"b/26366256\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_split_extent ( handle_t * handle , struct inode * inode , struct ext4_ext_path * path , struct ext4_map_blocks * map , int split_flag , int flags ) { ext4_lblk_t ee_block ; struct ext4_extent * ex ; unsigned int ee_len , depth ; int err = 0 ; int uninitialized ; int split_flag1 , flags1 ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; uninitialized = ext4_ext_is_uninitialized ( ex ) ; if ( map -> m_lblk + map -> m_len < ee_block + ee_len ) { <S2SV_StartBug> split_flag1 = split_flag & EXT4_EXT_MAY_ZEROOUT ? <S2SV_EndBug> EXT4_EXT_MAY_ZEROOUT : 0 ; flags1 = flags | EXT4_GET_BLOCKS_PRE_IO ; if ( uninitialized ) split_flag1 |= EXT4_EXT_MARK_UNINIT1 | EXT4_EXT_MARK_UNINIT2 ; <S2SV_StartBug> err = ext4_split_extent_at ( handle , inode , path , <S2SV_EndBug> map -> m_lblk + map -> m_len , split_flag1 , flags1 ) ; if ( err ) goto out ; } ext4_ext_drop_refs ( path ) ; path = ext4_ext_find_extent ( inode , map -> m_lblk , path ) ; if ( IS_ERR ( path ) ) return PTR_ERR ( path ) ; if ( map -> m_lblk >= ee_block ) { <S2SV_StartBug> split_flag1 = split_flag & EXT4_EXT_MAY_ZEROOUT ? <S2SV_EndBug> EXT4_EXT_MAY_ZEROOUT : 0 ; if ( uninitialized ) split_flag1 |= EXT4_EXT_MARK_UNINIT1 ; if ( split_flag & EXT4_EXT_MARK_UNINIT2 ) split_flag1 |= EXT4_EXT_MARK_UNINIT2 ; err = ext4_split_extent_at ( handle , inode , path , map -> m_lblk , split_flag1 , flags ) ; if ( err ) goto out ; } ext4_ext_show_leaf ( inode , path ) ; out : return err ? err : map -> m_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> split_flag & EXT4_EXT_MAY_ZEROOUT <S2SV_ModEnd> ; flags1 = <S2SV_ModStart> | EXT4_EXT_MARK_UNINIT2 ; if ( split_flag & EXT4_EXT_DATA_VALID2 ) split_flag1 |= EXT4_EXT_DATA_VALID1 ; <S2SV_ModStart> = split_flag & ( EXT4_EXT_MAY_ZEROOUT | EXT4_EXT_DATA_VALID2 ) <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7872\n\n```\nCWE-20 static struct key * construct_key_and_link ( struct keyring_search_context * ctx , const char * callout_info , size_t callout_len , void * aux , struct key * dest_keyring , unsigned long flags ) { struct key_user * user ; struct key * key ; int ret ; kenter ( \"\" ) ; <S2SV_StartBug> user = key_user_lookup ( current_fsuid ( ) ) ; <S2SV_EndBug> if ( ! user ) return ERR_PTR ( - ENOMEM ) ; construct_get_dest_keyring ( & dest_keyring ) ; ret = construct_alloc_key ( ctx , dest_keyring , flags , user , & key ) ; key_user_put ( user ) ; if ( ret == 0 ) { ret = construct_key ( key , callout_info , callout_len , aux , dest_keyring ) ; if ( ret < 0 ) { kdebug ( \"cons<S2SV_blank>failed\" ) ; goto construction_failed ; } } else if ( ret == - EINPROGRESS ) { ret = 0 ; } else { goto couldnt_alloc_key ; } key_put ( dest_keyring ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>key<S2SV_blank>%d\" , key_serial ( key ) ) ; return key ; construction_failed : key_negate_and_link ( key , key_negative_timeout , NULL , NULL ) ; key_put ( key ) ; couldnt_alloc_key : key_put ( dest_keyring ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"\" ) ; if ( ctx -> index_key . type == & key_type_keyring ) return ERR_PTR ( - EPERM ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1792\n\n```\nCWE-399 int CMS_verify ( CMS_ContentInfo * cms , STACK_OF ( X509 ) * certs , X509_STORE * store , BIO * dcont , BIO * out , unsigned int flags ) { CMS_SignerInfo * si ; STACK_OF ( CMS_SignerInfo ) * sinfos ; STACK_OF ( X509 ) * cms_certs = NULL ; STACK_OF ( X509_CRL ) * crls = NULL ; X509 * signer ; int i , scount = 0 , ret = 0 ; <S2SV_StartBug> BIO * cmsbio = NULL , * tmpin = NULL ; <S2SV_EndBug> if ( ! dcont && ! check_content ( cms ) ) return 0 ; sinfos = CMS_get0_SignerInfos ( cms ) ; if ( sk_CMS_SignerInfo_num ( sinfos ) <= 0 ) { CMSerr ( CMS_F_CMS_VERIFY , CMS_R_NO_SIGNERS ) ; goto err ; } for ( i = 0 ; i < sk_CMS_SignerInfo_num ( sinfos ) ; i ++ ) { si = sk_CMS_SignerInfo_value ( sinfos , i ) ; CMS_SignerInfo_get0_algs ( si , NULL , & signer , NULL , NULL ) ; if ( signer ) scount ++ ; } if ( scount != sk_CMS_SignerInfo_num ( sinfos ) ) scount += CMS_set1_signers_certs ( cms , certs , flags ) ; if ( scount != sk_CMS_SignerInfo_num ( sinfos ) ) { CMSerr ( CMS_F_CMS_VERIFY , CMS_R_SIGNER_CERTIFICATE_NOT_FOUND ) ; goto err ; } if ( ! ( flags & CMS_NO_SIGNER_CERT_VERIFY ) ) { cms_certs = CMS_get1_certs ( cms ) ; if ( ! ( flags & CMS_NOCRL ) ) crls = CMS_get1_crls ( cms ) ; for ( i = 0 ; i < sk_CMS_SignerInfo_num ( sinfos ) ; i ++ ) { si = sk_CMS_SignerInfo_value ( sinfos , i ) ; if ( ! cms_signerinfo_verify_cert ( si , store , cms_certs , crls , flags ) ) goto err ; } } if ( ! ( flags & CMS_NO_ATTR_VERIFY ) ) { for ( i = 0 ; i < sk_CMS_SignerInfo_num ( sinfos ) ; i ++ ) { si = sk_CMS_SignerInfo_value ( sinfos , i ) ; if ( CMS_signed_get_attr_count ( si ) < 0 ) continue ; if ( CMS_SignerInfo_verify ( si ) <= 0 ) goto err ; } } if ( dcont && ( BIO_method_type ( dcont ) == BIO_TYPE_MEM ) ) { char * ptr ; long len ; len = BIO_get_mem_data ( dcont , & ptr ) ; tmpin = BIO_new_mem_buf ( ptr , len ) ; if ( tmpin == NULL ) { CMSerr ( CMS_F_CMS_VERIFY , ERR_R_MALLOC_FAILURE ) ; return 0 ; } } else tmpin = dcont ; <S2SV_StartBug> cmsbio = CMS_dataInit ( cms , tmpin ) ; <S2SV_EndBug> if ( ! cmsbio ) goto err ; if ( ! cms_copy_content ( out , cmsbio , flags ) ) <S2SV_StartBug> goto err ; <S2SV_EndBug> if ( ! ( flags & CMS_NO_CONTENT_VERIFY ) ) { for ( i = 0 ; i < sk_CMS_SignerInfo_num ( sinfos ) ; i ++ ) { si = sk_CMS_SignerInfo_value ( sinfos , i ) ; if ( CMS_SignerInfo_verify_content ( si , cmsbio ) <= 0 ) { CMSerr ( CMS_F_CMS_VERIFY , CMS_R_CONTENT_VERIFY_ERROR ) ; goto err ; } } } ret = 1 ; err : <S2SV_StartBug> if ( dcont && ( tmpin == dcont ) ) <S2SV_EndBug> do_free_upto ( cmsbio , dcont ) ; else BIO_free_all ( cmsbio ) ; <S2SV_StartBug> if ( cms_certs ) <S2SV_EndBug> sk_X509_pop_free ( cms_certs , X509_free ) ; if ( crls ) sk_X509_CRL_pop_free ( crls , X509_CRL_free ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * tmpin = NULL , * tmpout <S2SV_ModStart> = dcont ; if ( ! ( flags & SMIME_BINARY ) && dcont ) { tmpout = cms_get_text_bio ( out , flags ) ; if ( ! tmpout ) { CMSerr ( CMS_F_CMS_VERIFY , ERR_R_MALLOC_FAILURE ) ; goto err ; } <S2SV_ModStart> ( cms , tmpout ) ; if ( ! cmsbio ) goto err ; SMIME_crlf_copy ( dcont , cmsbio , flags & ~ SMIME_TEXT ) ; if ( flags & CMS_TEXT ) { if ( ! SMIME_text ( tmpout , out ) ) { CMSerr ( CMS_F_CMS_VERIFY , CMS_R_SMIME_TEXT_ERROR ) ; goto err ; } } } else { cmsbio = CMS_dataInit ( cms , <S2SV_ModStart> goto err ; } <S2SV_ModStart> : if ( ! ( flags & SMIME_BINARY ) && dcont ) { do_free_upto ( cmsbio , tmpout ) ; if ( tmpin != dcont ) BIO_free ( tmpin ) ; } else { if ( <S2SV_ModStart> cmsbio ) ; } if ( tmpout && out != tmpout ) BIO_free_all ( tmpout ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6540\n\n```\nCWE-200 static int do_ip_vs_get_ctl ( struct sock * sk , int cmd , void __user * user , int * len ) { unsigned char arg [ 128 ] ; int ret = 0 ; unsigned int copylen ; struct net * net = sock_net ( sk ) ; struct netns_ipvs * ipvs = net_ipvs ( net ) ; BUG_ON ( ! net ) ; if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; if ( cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_GET_MAX ) return - EINVAL ; if ( * len < get_arglen [ GET_CMDID ( cmd ) ] ) { pr_err ( \"get_ctl:<S2SV_blank>len<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u\\\\n\" , * len , get_arglen [ GET_CMDID ( cmd ) ] ) ; return - EINVAL ; } copylen = get_arglen [ GET_CMDID ( cmd ) ] ; if ( copylen > 128 ) return - EINVAL ; if ( copy_from_user ( arg , user , copylen ) != 0 ) return - EFAULT ; if ( cmd == IP_VS_SO_GET_DAEMON ) { struct ip_vs_daemon_user d [ 2 ] ; memset ( & d , 0 , sizeof ( d ) ) ; if ( mutex_lock_interruptible ( & ipvs -> sync_mutex ) ) return - ERESTARTSYS ; if ( ipvs -> sync_state & IP_VS_STATE_MASTER ) { d [ 0 ] . state = IP_VS_STATE_MASTER ; strlcpy ( d [ 0 ] . mcast_ifn , ipvs -> master_mcast_ifn , sizeof ( d [ 0 ] . mcast_ifn ) ) ; d [ 0 ] . syncid = ipvs -> master_syncid ; } if ( ipvs -> sync_state & IP_VS_STATE_BACKUP ) { d [ 1 ] . state = IP_VS_STATE_BACKUP ; strlcpy ( d [ 1 ] . mcast_ifn , ipvs -> backup_mcast_ifn , sizeof ( d [ 1 ] . mcast_ifn ) ) ; d [ 1 ] . syncid = ipvs -> backup_syncid ; } if ( copy_to_user ( user , & d , sizeof ( d ) ) != 0 ) ret = - EFAULT ; mutex_unlock ( & ipvs -> sync_mutex ) ; return ret ; } if ( mutex_lock_interruptible ( & __ip_vs_mutex ) ) return - ERESTARTSYS ; switch ( cmd ) { case IP_VS_SO_GET_VERSION : { char buf [ 64 ] ; sprintf ( buf , \"IP<S2SV_blank>Virtual<S2SV_blank>Server<S2SV_blank>version<S2SV_blank>%d.%d.%d<S2SV_blank>(size=%d)\" , NVERSION ( IP_VS_VERSION_CODE ) , ip_vs_conn_tab_size ) ; if ( copy_to_user ( user , buf , strlen ( buf ) + 1 ) != 0 ) { ret = - EFAULT ; goto out ; } * len = strlen ( buf ) + 1 ; } break ; case IP_VS_SO_GET_INFO : { struct ip_vs_getinfo info ; info . version = IP_VS_VERSION_CODE ; info . size = ip_vs_conn_tab_size ; info . num_services = ipvs -> num_services ; if ( copy_to_user ( user , & info , sizeof ( info ) ) != 0 ) ret = - EFAULT ; } break ; case IP_VS_SO_GET_SERVICES : { struct ip_vs_get_services * get ; int size ; get = ( struct ip_vs_get_services * ) arg ; size = sizeof ( * get ) + sizeof ( struct ip_vs_service_entry ) * get -> num_services ; if ( * len != size ) { pr_err ( \"length:<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u\\\\n\" , * len , size ) ; ret = - EINVAL ; goto out ; } ret = __ip_vs_get_service_entries ( net , get , user ) ; } break ; case IP_VS_SO_GET_SERVICE : { struct ip_vs_service_entry * entry ; struct ip_vs_service * svc ; union nf_inet_addr addr ; entry = ( struct ip_vs_service_entry * ) arg ; addr . ip = entry -> addr ; if ( entry -> fwmark ) svc = __ip_vs_svc_fwm_find ( net , AF_INET , entry -> fwmark ) ; else svc = __ip_vs_service_find ( net , AF_INET , entry -> protocol , & addr , entry -> port ) ; if ( svc ) { ip_vs_copy_service ( entry , svc ) ; if ( copy_to_user ( user , entry , sizeof ( * entry ) ) != 0 ) ret = - EFAULT ; } else ret = - ESRCH ; } break ; case IP_VS_SO_GET_DESTS : { struct ip_vs_get_dests * get ; int size ; get = ( struct ip_vs_get_dests * ) arg ; size = sizeof ( * get ) + sizeof ( struct ip_vs_dest_entry ) * get -> num_dests ; if ( * len != size ) { pr_err ( \"length:<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u\\\\n\" , * len , size ) ; ret = - EINVAL ; goto out ; } ret = __ip_vs_get_dest_entries ( net , get , user ) ; } break ; case IP_VS_SO_GET_TIMEOUT : { struct ip_vs_timeout_user t ; <S2SV_StartBug> __ip_vs_get_timeouts ( net , & t ) ; <S2SV_EndBug> if ( copy_to_user ( user , & t , sizeof ( t ) ) != 0 ) ret = - EFAULT ; } break ; default : ret = - EINVAL ; } out : mutex_unlock ( & __ip_vs_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip_vs_timeout_user t ; memset ( & t , 0 , sizeof ( t ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t encoder_set_config ( vpx_codec_alg_priv_t * ctx , const vpx_codec_enc_cfg_t * cfg ) { vpx_codec_err_t res ; <S2SV_StartBug> if ( cfg -> g_w != ctx -> cfg . g_w || cfg -> g_h != ctx -> cfg . g_h ) <S2SV_EndBug> <S2SV_StartBug> ERROR ( \"Cannot<S2SV_blank>change<S2SV_blank>width<S2SV_blank>or<S2SV_blank>height<S2SV_blank>after<S2SV_blank>initialization\" ) ; <S2SV_EndBug> if ( cfg -> g_lag_in_frames > ctx -> cfg . g_lag_in_frames ) ERROR ( \"Cannot<S2SV_blank>increase<S2SV_blank>lag_in_frames\" ) ; res = validate_config ( ctx , cfg , & ctx -> extra_cfg ) ; if ( res == VPX_CODEC_OK ) { ctx -> cfg = * cfg ; set_encoder_config ( & ctx -> oxcf , & ctx -> cfg , & ctx -> extra_cfg ) ; <S2SV_StartBug> vp9_change_config ( ctx -> cpi , & ctx -> oxcf ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_err_t res ; int force_key = 0 ; if ( cfg -> g_w != ctx -> cfg . g_w || cfg -> g_h != ctx -> cfg . g_h ) { if ( cfg -> g_lag_in_frames > 1 || cfg -> g_pass != VPX_RC_ONE_PASS <S2SV_ModEnd> ) ERROR ( <S2SV_ModStart> \"Cannot<S2SV_blank>change<S2SV_blank>width<S2SV_blank>or<S2SV_blank>height<S2SV_blank>after<S2SV_blank>initialization\" ) ; if ( ! valid_ref_frame_size ( ctx -> cfg . g_w , ctx -> cfg . g_h , cfg -> g_w , cfg -> g_h ) || ( ctx -> cpi -> initial_width && ( int ) cfg -> g_w > ctx -> cpi -> initial_width ) || ( ctx -> cpi -> initial_height && ( int ) cfg -> g_h > ctx -> cpi -> initial_height ) ) force_key = 1 ; } <S2SV_ModStart> extra_cfg ) ; force_key |= ctx -> cpi -> common . profile != ctx -> oxcf . profile ; <S2SV_ModStart> ) ; } if ( force_key ) ctx -> next_frame_flags |= VPX_EFLAG_FORCE_KF ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2184\n\n```\nCWE-000 static int create_fixed_stream_quirk ( struct snd_usb_audio * chip , struct usb_interface * iface , struct usb_driver * driver , const struct snd_usb_audio_quirk * quirk ) { struct audioformat * fp ; struct usb_host_interface * alts ; struct usb_interface_descriptor * altsd ; int stream , err ; unsigned * rate_table = NULL ; fp = kmemdup ( quirk -> data , sizeof ( * fp ) , GFP_KERNEL ) ; if ( ! fp ) { usb_audio_err ( chip , \"cannot<S2SV_blank>memdup\\\\n\" ) ; return - ENOMEM ; } if ( fp -> nr_rates > MAX_NR_RATES ) { kfree ( fp ) ; return - EINVAL ; } if ( fp -> nr_rates > 0 ) { rate_table = kmemdup ( fp -> rate_table , sizeof ( int ) * fp -> nr_rates , GFP_KERNEL ) ; if ( ! rate_table ) { kfree ( fp ) ; return - ENOMEM ; } fp -> rate_table = rate_table ; } stream = ( fp -> endpoint & USB_DIR_IN ) ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK ; err = snd_usb_add_audio_stream ( chip , stream , fp ) ; if ( err < 0 ) { kfree ( fp ) ; kfree ( rate_table ) ; return err ; } if ( fp -> iface != get_iface_desc ( & iface -> altsetting [ 0 ] ) -> bInterfaceNumber || fp -> altset_idx >= iface -> num_altsetting ) { kfree ( fp ) ; kfree ( rate_table ) ; return - EINVAL ; } alts = & iface -> altsetting [ fp -> altset_idx ] ; altsd = get_iface_desc ( alts ) ; <S2SV_StartBug> fp -> protocol = altsd -> bInterfaceProtocol ; <S2SV_EndBug> if ( fp -> datainterval == 0 ) fp -> datainterval = snd_usb_parse_datainterval ( chip , alts ) ; if ( fp -> maxpacksize == 0 ) fp -> maxpacksize = le16_to_cpu ( get_endpoint ( alts , 0 ) -> wMaxPacketSize ) ; usb_set_interface ( chip -> dev , fp -> iface , 0 ) ; snd_usb_init_pitch ( chip , fp -> iface , alts , fp ) ; snd_usb_init_sample_rate ( chip , fp -> iface , alts , fp , fp -> rate_max ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> alts ) ; if ( altsd -> bNumEndpoints < 1 ) { kfree ( fp ) ; kfree ( rate_table ) ; return - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10129\n\n```\nCWE-476 static int add_push_report_sideband_pkt ( git_push * push , git_pkt_data * data_pkt , git_buf * data_pkt_buf ) { git_pkt * pkt ; const char * line , * line_end = NULL ; size_t line_len ; int error ; int reading_from_buf = data_pkt_buf -> size > 0 ; if ( reading_from_buf ) { git_buf_put ( data_pkt_buf , data_pkt -> data , data_pkt -> len ) ; line = data_pkt_buf -> ptr ; line_len = data_pkt_buf -> size ; } else { line = data_pkt -> data ; line_len = data_pkt -> len ; } while ( line_len > 0 ) { error = git_pkt_parse_line ( & pkt , line , & line_end , line_len ) ; if ( error == GIT_EBUFS ) { if ( ! reading_from_buf ) git_buf_put ( data_pkt_buf , line , line_len ) ; error = 0 ; goto done ; } else if ( error < 0 ) goto done ; line_len -= ( line_end - line ) ; line = line_end ; <S2SV_StartBug> if ( pkt == NULL ) <S2SV_EndBug> continue ; error = add_push_report_pkt ( push , pkt ) ; git_pkt_free ( pkt ) ; if ( error < 0 && error != GIT_ITEROVER ) goto done ; } error = 0 ; done : if ( reading_from_buf ) git_buf_consume ( data_pkt_buf , line_end ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = line_end ; <S2SV_ModEnd> error = add_push_report_pkt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4653\n\n```\nCWE-000 int snd_ctl_add ( struct snd_card * card , struct snd_kcontrol * kcontrol ) { struct snd_ctl_elem_id id ; unsigned int idx ; <S2SV_StartBug> int err = - EINVAL ; <S2SV_EndBug> if ( ! kcontrol ) return err ; if ( snd_BUG_ON ( ! card || ! kcontrol -> info ) ) goto error ; id = kcontrol -> id ; down_write ( & card -> controls_rwsem ) ; if ( snd_ctl_find_id ( card , & id ) ) { up_write ( & card -> controls_rwsem ) ; dev_err ( card -> dev , \"control<S2SV_blank>%i:%i:%i:%s:%i<S2SV_blank>is<S2SV_blank>already<S2SV_blank>present\\\\n\" , id . iface , id . device , id . subdevice , id . name , id . index ) ; err = - EBUSY ; goto error ; } if ( snd_ctl_find_hole ( card , kcontrol -> count ) < 0 ) { up_write ( & card -> controls_rwsem ) ; err = - ENOMEM ; goto error ; } list_add_tail ( & kcontrol -> list , & card -> controls ) ; card -> controls_count += kcontrol -> count ; kcontrol -> id . numid = card -> last_numid + 1 ; card -> last_numid += kcontrol -> count ; <S2SV_StartBug> up_write ( & card -> controls_rwsem ) ; <S2SV_EndBug> <S2SV_StartBug> for ( idx = 0 ; idx < kcontrol -> count ; idx ++ , id . index ++ , id . numid ++ ) <S2SV_EndBug> snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_ADD , & id ) ; return 0 ; error : snd_ctl_free_one ( kcontrol ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int idx ; unsigned int count ; <S2SV_ModStart> -> count ; count = kcontrol -> count ; <S2SV_ModStart> ; idx < <S2SV_ModEnd> count ; idx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 int cJSON_GetArraySize ( cJSON * array ) { cJSON * c = array -> child ; int i = 0 ; <S2SV_StartBug> while ( c ) { <S2SV_EndBug> ++ i ; c = c -> next ; <S2SV_StartBug> } <S2SV_EndBug> return i ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( c ) i ++ , <S2SV_ModEnd> c = c <S2SV_ModStart> -> next ; <S2SV_ModEnd> return i ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35573\n\n```\nCWE-400 int srs_timestamp_check ( srs_t * srs , const char * stamp ) { const char * sp ; char * bp ; int off ; time_t now ; <S2SV_StartBug> time_t then ; <S2SV_EndBug> then = 0 ; for ( sp = stamp ; * sp ; sp ++ ) { bp = strchr ( SRS_TIME_BASECHARS , toupper ( * sp ) ) ; if ( bp == NULL ) return SRS_EBADTIMESTAMPCHAR ; off = bp - SRS_TIME_BASECHARS ; then = ( then << SRS_TIME_BASEBITS ) | off ; } time ( & now ) ; now = ( now / SRS_TIME_PRECISION ) % SRS_TIME_SLOTS ; while ( now < then ) now = now + SRS_TIME_SLOTS ; if ( now <= then + srs -> maxage ) return SRS_SUCCESS ; return SRS_ETIMESTAMPOUTOFDATE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; time_t then ; if ( strlen ( stamp ) != 2 ) return SRS_ETIMESTAMPOUTOFDATE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 <S2SV_StartBug> xmlNode * <S2SV_EndBug> <S2SV_StartBug> crm_recv_remote_msg ( void * session , gboolean encrypted ) <S2SV_EndBug> { char * reply = NULL ; <S2SV_StartBug> xmlNode * xml = NULL ; <S2SV_EndBug> <S2SV_StartBug> if ( encrypted ) { <S2SV_EndBug> # ifdef HAVE_GNUTLS_GNUTLS_H reply = cib_recv_tls ( session ) ; # else CRM_ASSERT ( encrypted == FALSE ) ; # endif } else { reply = cib_recv_plaintext ( GPOINTER_TO_INT ( session ) ) ; } if ( reply == NULL || strlen ( reply ) == 0 ) { crm_trace ( \"Empty<S2SV_blank>reply\" ) ; } else { xml = string2xml ( reply ) ; if ( xml == NULL ) { crm_err ( \"Couldn\\'t<S2SV_blank>parse:<S2SV_blank>\\'%.120s\\'\" , reply ) ; } } free ( reply ) ; return xml ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> gboolean <S2SV_ModEnd> crm_recv_remote_msg ( void <S2SV_ModStart> void * session , char * * recv_buf <S2SV_ModStart> , gboolean encrypted , int total_timeout , int * disconnected ) { int ret ; size_t request_len = 0 ; time_t start = time ( NULL ) ; char * raw_request <S2SV_ModEnd> = NULL ; <S2SV_ModStart> = NULL ; int remaining_timeout = 0 ; if ( total_timeout == 0 ) { total_timeout = 10000 ; } else if ( total_timeout < 0 ) { total_timeout = 60000 ; } * disconnected = 0 ; remaining_timeout = total_timeout ; while ( ( remaining_timeout > 0 ) && ! ( * disconnected ) ) { crm_trace ( \"waiting<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>remote<S2SV_blank>msg,<S2SV_blank>starting<S2SV_blank>timeout<S2SV_blank>%d,<S2SV_blank>remaining_timeout<S2SV_blank>%d\" , total_timeout , remaining_timeout ) ; ret = crm_recv_remote_ready ( session , encrypted , remaining_timeout ) ; raw_request <S2SV_ModEnd> = NULL ; <S2SV_ModStart> ; if ( ret == 0 ) { crm_err ( \"poll<S2SV_blank>timed<S2SV_blank>out<S2SV_blank>(%d<S2SV_blank>ms)<S2SV_blank>while<S2SV_blank>waiting<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>msg\" , remaining_timeout ) ; return FALSE ; } else if ( ret < 0 ) { if ( errno != EINTR ) { crm_debug ( \"poll<S2SV_blank>returned<S2SV_blank>error<S2SV_blank>while<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>msg,<S2SV_blank>rc:<S2SV_blank>%d,<S2SV_blank>errno:<S2SV_blank>%d\" , ret , errno ) ; * disconnected = 1 ; return FALSE ; } crm_debug ( \"poll<S2SV_blank>EINTR<S2SV_blank>encountered<S2SV_blank>during<S2SV_blank>poll,<S2SV_blank>retrying\" ) ; } else { raw_request = crm_recv_remote_raw ( session , encrypted , 0 , & request_len , disconnected ) ; } remaining_timeout = remaining_timeout - ( ( time ( NULL ) - start ) * 1000 ) ; if ( ! raw_request ) { crm_debug ( \"Empty<S2SV_blank>msg<S2SV_blank>received<S2SV_blank>after<S2SV_blank>poll\" ) ; continue ; } if ( * recv_buf ) { int old_len = strlen ( * recv_buf ) ; crm_trace ( \"Expanding<S2SV_blank>recv<S2SV_blank>buffer<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d\" , old_len , old_len + request_len ) ; * recv_buf = realloc ( * recv_buf , old_len + request_len + 1 ) ; memcpy ( * recv_buf + old_len , raw_request , request_len ) ; * ( * recv_buf + old_len + request_len ) = '\\\\0' ; free ( raw_request ) ; } else { * recv_buf = raw_request ; } if ( strstr ( * recv_buf , REMOTE_MSG_TERMINATOR ) ) { return TRUE ; } } return FALSE <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16163\n\n```\nCWE-674 static int parse_exp ( Node * * np , PToken * tok , int term , UChar * * src , UChar * end , ScanEnv * env , int group_head ) { <S2SV_StartBug> int r , len , group = 0 ; <S2SV_EndBug> Node * qn ; <S2SV_StartBug> Node * * tp ; <S2SV_EndBug> * np = NULL ; if ( tok -> type == ( enum TokenSyms ) term ) <S2SV_StartBug> goto end_of_token ; <S2SV_EndBug> switch ( tok -> type ) { case TK_ALT : case TK_EOT : end_of_token : * np = node_new_empty ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; return tok -> type ; break ; case TK_SUBEXP_OPEN : r = parse_bag ( np , tok , TK_SUBEXP_CLOSE , src , end , env ) ; if ( r < 0 ) return r ; if ( r == 1 ) { if ( group_head == 0 ) group = 1 ; else { Node * target = * np ; * np = node_new_group ( target ) ; if ( IS_NULL ( * np ) ) { onig_node_free ( target ) ; return ONIGERR_MEMORY ; } group = 2 ; } } else if ( r == 2 ) { Node * target ; OnigOptionType prev = env -> options ; env -> options = BAG_ ( * np ) -> o . options ; r = fetch_token ( tok , src , end , env ) ; if ( r < 0 ) return r ; r = parse_subexp ( & target , tok , term , src , end , env , 0 ) ; env -> options = prev ; if ( r < 0 ) { onig_node_free ( target ) ; return r ; } NODE_BODY ( * np ) = target ; return tok -> type ; } break ; case TK_SUBEXP_CLOSE : if ( ! IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_ALLOW_UNMATCHED_CLOSE_SUBEXP ) ) return ONIGERR_UNMATCHED_CLOSE_PARENTHESIS ; if ( tok -> escaped ) goto tk_raw_byte ; else goto tk_byte ; break ; case TK_STRING : tk_byte : { * np = node_new_str ( tok -> backp , * src ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; while ( 1 ) { r = fetch_token ( tok , src , end , env ) ; if ( r < 0 ) return r ; if ( r != TK_STRING ) break ; r = onig_node_str_cat ( * np , tok -> backp , * src ) ; if ( r < 0 ) return r ; } string_end : tp = np ; goto repeat ; } break ; case TK_RAW_BYTE : tk_raw_byte : { * np = node_new_str_raw_char ( ( UChar ) tok -> u . c ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; len = 1 ; while ( 1 ) { if ( len >= ONIGENC_MBC_MINLEN ( env -> enc ) ) { if ( len == enclen ( env -> enc , STR_ ( * np ) -> s ) ) { r = fetch_token ( tok , src , end , env ) ; goto tk_raw_byte_end ; } } r = fetch_token ( tok , src , end , env ) ; if ( r < 0 ) return r ; if ( r != TK_RAW_BYTE ) return ONIGERR_TOO_SHORT_MULTI_BYTE_STRING ; r = node_str_cat_char ( * np , ( UChar ) tok -> u . c ) ; if ( r < 0 ) return r ; len ++ ; } tk_raw_byte_end : if ( ! ONIGENC_IS_VALID_MBC_STRING ( env -> enc , STR_ ( * np ) -> s , STR_ ( * np ) -> end ) ) return ONIGERR_INVALID_WIDE_CHAR_VALUE ; NODE_STRING_CLEAR_RAW ( * np ) ; goto string_end ; } break ; case TK_CODE_POINT : { UChar buf [ ONIGENC_CODE_TO_MBC_MAXLEN ] ; len = ONIGENC_CODE_TO_MBC ( env -> enc , tok -> u . code , buf ) ; if ( len < 0 ) return len ; # ifdef NUMBERED_CHAR_IS_NOT_CASE_AMBIG * np = node_new_str_raw ( buf , buf + len ) ; # else * np = node_new_str ( buf , buf + len ) ; # endif CHECK_NULL_RETURN_MEMERR ( * np ) ; } break ; case TK_QUOTE_OPEN : { OnigCodePoint end_op [ 2 ] ; UChar * qstart , * qend , * nextp ; end_op [ 0 ] = ( OnigCodePoint ) MC_ESC ( env -> syntax ) ; end_op [ 1 ] = ( OnigCodePoint ) 'E' ; qstart = * src ; qend = find_str_position ( end_op , 2 , qstart , end , & nextp , env -> enc ) ; if ( IS_NULL ( qend ) ) { nextp = qend = end ; } * np = node_new_str ( qstart , qend ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; * src = nextp ; } break ; case TK_CHAR_TYPE : { switch ( tok -> u . prop . ctype ) { case ONIGENC_CTYPE_WORD : * np = node_new_ctype ( tok -> u . prop . ctype , tok -> u . prop . not , env -> options ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; break ; case ONIGENC_CTYPE_SPACE : case ONIGENC_CTYPE_DIGIT : case ONIGENC_CTYPE_XDIGIT : { CClassNode * cc ; * np = node_new_cclass ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; cc = CCLASS_ ( * np ) ; add_ctype_to_cc ( cc , tok -> u . prop . ctype , 0 , env ) ; if ( tok -> u . prop . not != 0 ) NCCLASS_SET_NOT ( cc ) ; } break ; default : return ONIGERR_PARSER_BUG ; break ; } } break ; case TK_CHAR_PROPERTY : r = parse_char_property ( np , tok , src , end , env ) ; if ( r != 0 ) return r ; break ; case TK_CC_OPEN : { CClassNode * cc ; r = parse_char_class ( np , tok , src , end , env ) ; if ( r != 0 ) return r ; cc = CCLASS_ ( * np ) ; if ( IS_IGNORECASE ( env -> options ) ) { IApplyCaseFoldArg iarg ; iarg . env = env ; iarg . cc = cc ; iarg . alt_root = NULL_NODE ; iarg . ptail = & ( iarg . alt_root ) ; r = ONIGENC_APPLY_ALL_CASE_FOLD ( env -> enc , env -> case_fold_flag , i_apply_case_fold , & iarg ) ; if ( r != 0 ) { onig_node_free ( iarg . alt_root ) ; return r ; } if ( IS_NOT_NULL ( iarg . alt_root ) ) { Node * work = onig_node_new_alt ( * np , iarg . alt_root ) ; if ( IS_NULL ( work ) ) { onig_node_free ( iarg . alt_root ) ; return ONIGERR_MEMORY ; } * np = work ; } } } break ; case TK_ANYCHAR : * np = node_new_anychar ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; break ; case TK_ANYCHAR_ANYTIME : * np = node_new_anychar ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; qn = node_new_quantifier ( 0 , INFINITE_REPEAT , 0 ) ; CHECK_NULL_RETURN_MEMERR ( qn ) ; NODE_BODY ( qn ) = * np ; * np = qn ; break ; case TK_BACKREF : len = tok -> u . backref . num ; * np = node_new_backref ( len , ( len > 1 ? tok -> u . backref . refs : & ( tok -> u . backref . ref1 ) ) , tok -> u . backref . by_name , # ifdef USE_BACKREF_WITH_LEVEL tok -> u . backref . exist_level , tok -> u . backref . level , # endif env ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; break ; # ifdef USE_CALL case TK_CALL : { int gnum = tok -> u . call . gnum ; * np = node_new_call ( tok -> u . call . name , tok -> u . call . name_end , gnum , tok -> u . call . by_number ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; env -> num_call ++ ; if ( tok -> u . call . by_number != 0 && gnum == 0 ) { env -> has_call_zero = 1 ; } } break ; # endif case TK_ANCHOR : { int ascii_mode = IS_WORD_ASCII ( env -> options ) && IS_WORD_ANCHOR_TYPE ( tok -> u . anchor ) ? 1 : 0 ; * np = onig_node_new_anchor ( tok -> u . anchor , ascii_mode ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; } break ; case TK_REPEAT : case TK_INTERVAL : if ( IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_CONTEXT_INDEP_REPEAT_OPS ) ) { if ( IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_CONTEXT_INVALID_REPEAT_OPS ) ) return ONIGERR_TARGET_OF_REPEAT_OPERATOR_NOT_SPECIFIED ; else { * np = node_new_empty ( ) ; CHECK_NULL_RETURN_MEMERR ( * np ) ; } } else { goto tk_byte ; } break ; case TK_KEEP : r = node_new_keep ( np , env ) ; if ( r < 0 ) return r ; break ; case TK_GENERAL_NEWLINE : r = node_new_general_newline ( np , env ) ; if ( r < 0 ) return r ; break ; case TK_NO_NEWLINE : r = node_new_no_newline ( np , env ) ; if ( r < 0 ) return r ; break ; case TK_TRUE_ANYCHAR : r = node_new_true_anychar ( np , env ) ; if ( r < 0 ) return r ; break ; case TK_TEXT_SEGMENT : r = make_text_segment ( np , env ) ; if ( r < 0 ) return r ; break ; default : return ONIGERR_PARSER_BUG ; break ; } { tp = np ; re_entry : r = fetch_token ( tok , src , end , env ) ; if ( r < 0 ) return r ; repeat : if ( r == TK_REPEAT || r == TK_INTERVAL ) { Node * target ; if ( is_invalid_quantifier_target ( * tp ) ) return ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID ; <S2SV_StartBug> qn = node_new_quantifier ( tok -> u . repeat . lower , tok -> u . repeat . upper , <S2SV_EndBug> r == TK_INTERVAL ) ; CHECK_NULL_RETURN_MEMERR ( qn ) ; QUANT_ ( qn ) -> greedy = tok -> u . repeat . greedy ; if ( group == 2 ) { target = node_drop_group ( * tp ) ; * tp = NULL_NODE ; } else { target = * tp ; } r = set_quantifier ( qn , target , group , env ) ; if ( r < 0 ) { onig_node_free ( qn ) ; return r ; } if ( tok -> u . repeat . possessive != 0 ) { Node * en ; en = node_new_bag ( BAG_STOP_BACKTRACK ) ; if ( IS_NULL ( en ) ) { onig_node_free ( qn ) ; return ONIGERR_MEMORY ; } NODE_BODY ( en ) = qn ; qn = en ; } if ( r == 0 ) { * tp = qn ; } else if ( r == 1 ) { onig_node_free ( qn ) ; * tp = target ; } else if ( r == 2 ) { Node * tmp ; * tp = node_new_list ( * tp , NULL ) ; if ( IS_NULL ( * tp ) ) { onig_node_free ( qn ) ; return ONIGERR_MEMORY ; } tmp = NODE_CDR ( * tp ) = node_new_list ( qn , NULL ) ; if ( IS_NULL ( tmp ) ) { onig_node_free ( qn ) ; return ONIGERR_MEMORY ; } tp = & ( NODE_CAR ( tmp ) ) ; } group = 0 ; goto re_entry ; } } return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len , group <S2SV_ModEnd> ; Node * <S2SV_ModStart> * * tp ; unsigned int parse_depth ; group = 0 <S2SV_ModStart> ) goto end_of_token ; parse_depth = env -> parse_depth <S2SV_ModStart> return ONIGERR_TARGET_OF_REPEAT_OPERATOR_INVALID ; parse_depth ++ ; if ( parse_depth > ParseDepthLimit ) return ONIGERR_PARSE_DEPTH_LIMIT_OVER ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13013\n\n```\nCWE-125 void arp_print ( netdissect_options * ndo , const u_char * bp , u_int length , u_int caplen ) { const struct arp_pkthdr * ap ; u_short pro , hrd , op , linkaddr ; ap = ( const struct arp_pkthdr * ) bp ; ND_TCHECK ( * ap ) ; hrd = HRD ( ap ) ; pro = PRO ( ap ) ; op = OP ( ap ) ; switch ( hrd ) { case ARPHRD_ATM2225 : atmarp_print ( ndo , bp , length , caplen ) ; return ; case ARPHRD_FRELAY : linkaddr = LINKADDR_FRELAY ; break ; default : linkaddr = LINKADDR_ETHER ; break ; } <S2SV_StartBug> if ( ! ND_TTEST2 ( * ar_tpa ( ap ) , PROTO_LEN ( ap ) ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) ap , length ) ; return ; } if ( ! ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"ARP,<S2SV_blank>\" ) ) ; } if ( ( pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL ) || PROTO_LEN ( ap ) != 4 || HRD_LEN ( ap ) == 0 || ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>(len<S2SV_blank>%u),<S2SV_blank>%s<S2SV_blank>(len<S2SV_blank>%u)\" , tok2str ( arphrd_values , \"Unknown<S2SV_blank>Hardware<S2SV_blank>(%u)\" , hrd ) , HRD_LEN ( ap ) , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , pro ) , PROTO_LEN ( ap ) ) ) ; if ( ! ndo -> ndo_vflag ) { goto out ; } } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>\" , ndo -> ndo_vflag ? \",<S2SV_blank>\" : \"\" , tok2str ( arpop_values , \"Unknown<S2SV_blank>(%u)\" , op ) ) ) ; switch ( op ) { case ARPOP_REQUEST : <S2SV_StartBug> ND_PRINT ( ( ndo , \"who-has<S2SV_blank>%s\" , ipaddr_string ( ndo , TPA ( ap ) ) ) ) ; <S2SV_EndBug> if ( isnonzero ( ( const u_char * ) THA ( ap ) , HRD_LEN ( ap ) ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , linkaddr_string ( ndo , THA ( ap ) , linkaddr , HRD_LEN ( ap ) ) ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>tell<S2SV_blank>%s\" , ipaddr_string ( ndo , SPA ( ap ) ) ) ) ; <S2SV_EndBug> break ; case ARPOP_REPLY : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>is-at<S2SV_blank>%s\" , <S2SV_EndBug> ipaddr_string ( ndo , SPA ( ap ) ) , linkaddr_string ( ndo , SHA ( ap ) , linkaddr , HRD_LEN ( ap ) ) ) ) ; break ; case ARPOP_REVREQUEST : ND_PRINT ( ( ndo , \"who-is<S2SV_blank>%s<S2SV_blank>tell<S2SV_blank>%s\" , linkaddr_string ( ndo , THA ( ap ) , linkaddr , HRD_LEN ( ap ) ) , linkaddr_string ( ndo , SHA ( ap ) , linkaddr , HRD_LEN ( ap ) ) ) ) ; break ; case ARPOP_REVREPLY : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>at<S2SV_blank>%s\" , <S2SV_EndBug> <S2SV_StartBug> linkaddr_string ( ndo , THA ( ap ) , linkaddr , HRD_LEN ( ap ) ) , <S2SV_EndBug> ipaddr_string ( ndo , TPA ( ap ) ) ) ) ; break ; case ARPOP_INVREQUEST : ND_PRINT ( ( ndo , \"who-is<S2SV_blank>%s<S2SV_blank>tell<S2SV_blank>%s\" , linkaddr_string ( ndo , THA ( ap ) , linkaddr , HRD_LEN ( ap ) ) , linkaddr_string ( ndo , SHA ( ap ) , linkaddr , HRD_LEN ( ap ) ) ) ) ; break ; case ARPOP_INVREPLY : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>at<S2SV_blank>%s\" , <S2SV_EndBug> <S2SV_StartBug> linkaddr_string ( ndo , SHA ( ap ) , linkaddr , HRD_LEN ( ap ) ) , <S2SV_EndBug> ipaddr_string ( ndo , SPA ( ap ) ) ) ) ; break ; default : ND_DEFAULTPRINT ( ( const u_char * ) ap , caplen ) ; return ; } out : ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ND_TTEST2 ( * TPA <S2SV_ModEnd> ( ap ) <S2SV_ModStart> ( ndo , \"who-has<S2SV_blank>\" ) ) ; tpaddr_print_ip ( ndo , ap , pro <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( ndo , \"<S2SV_blank>tell<S2SV_blank>\" ) ) ; spaddr_print_ip ( ndo , ap , pro <S2SV_ModEnd> ) ; break <S2SV_ModStart> case ARPOP_REPLY : spaddr_print_ip ( ndo , ap , pro ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>is-at<S2SV_blank>%s\" <S2SV_ModEnd> , linkaddr_string ( <S2SV_ModStart> ( ndo , \"%s<S2SV_blank>at<S2SV_blank>\" <S2SV_ModEnd> , linkaddr_string ( <S2SV_ModStart> ap ) ) ) ) ; tpaddr_print_ip ( ndo , ap , pro <S2SV_ModEnd> ) ; break <S2SV_ModStart> ( ndo , \"%s<S2SV_blank>at<S2SV_blank>\" <S2SV_ModEnd> , linkaddr_string ( <S2SV_ModStart> ap ) ) ) ) ; spaddr_print_ip ( ndo , ap , pro <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9499\n\n```\nCWE-617 static Image * ReadMPCImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char cache_filename [ MagickPathExtent ] , id [ MagickPathExtent ] , keyword [ MagickPathExtent ] , * options ; const unsigned char * p ; GeometryInfo geometry_info ; Image * image ; int c ; LinkedListInfo * profiles ; MagickBooleanType status ; MagickOffsetType offset ; MagickStatusType flags ; register ssize_t i ; size_t depth , length ; ssize_t count ; StringInfo * profile ; unsigned int signature ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( cache_filename , image -> filename , MagickPathExtent ) ; AppendImageFormat ( \"cache\" , cache_filename ) ; c = ReadBlobByte ( image ) ; if ( c == EOF ) { image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } * id = '\\\\0' ; ( void ) ResetMagickMemory ( keyword , 0 , sizeof ( keyword ) ) ; offset = 0 ; do { profiles = ( LinkedListInfo * ) NULL ; length = MagickPathExtent ; options = AcquireString ( ( char * ) NULL ) ; signature = GetMagickSignature ( ( const StringInfo * ) NULL ) ; image -> depth = 8 ; image -> compression = NoCompression ; while ( ( isgraph ( c ) != MagickFalse ) && ( c != ( int ) ':' ) ) { register char * p ; if ( c == ( int ) '{' ) { char * comment ; length = MagickPathExtent ; comment = AcquireString ( ( char * ) NULL ) ; for ( p = comment ; comment != ( char * ) NULL ; p ++ ) { c = ReadBlobByte ( image ) ; if ( c == ( int ) '\\\\\\\\' ) c = ReadBlobByte ( image ) ; else if ( ( c == EOF ) || ( c == ( int ) '}' ) ) break ; if ( ( size_t ) ( p - comment + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; comment = ( char * ) ResizeQuantumMemory ( comment , length + MagickPathExtent , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) break ; p = comment + strlen ( comment ) ; } * p = ( char ) c ; } if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; * p = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; c = ReadBlobByte ( image ) ; } else if ( isalnum ( c ) != MagickFalse ) { length = MagickPathExtent ; p = keyword ; do { if ( c == ( int ) '=' ) break ; if ( ( size_t ) ( p - keyword ) < ( MagickPathExtent - 1 ) ) * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; } while ( c != EOF ) ; * p = '\\\\0' ; p = options ; while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; if ( c == ( int ) '=' ) { c = ReadBlobByte ( image ) ; while ( ( c != ( int ) '}' ) && ( c != EOF ) ) { if ( ( size_t ) ( p - options + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; options = ( char * ) ResizeQuantumMemory ( options , length + MagickPathExtent , sizeof ( * options ) ) ; if ( options == ( char * ) NULL ) break ; p = options + strlen ( options ) ; } * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; if ( c == '\\\\\\\\' ) { c = ReadBlobByte ( image ) ; if ( c == ( int ) '}' ) { * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; } } if ( * options != '{' ) if ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) break ; } if ( options == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } * p = '\\\\0' ; if ( * options == '{' ) ( void ) CopyMagickString ( options , options + 1 , strlen ( options ) ) ; switch ( * keyword ) { case 'a' : case 'A' : { if ( LocaleCompare ( keyword , \"alpha-trait\" ) == 0 ) { ssize_t alpha_trait ; alpha_trait = ParseCommandOption ( MagickPixelTraitOptions , MagickFalse , options ) ; if ( alpha_trait < 0 ) break ; image -> alpha_trait = ( PixelTrait ) alpha_trait ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'b' : case 'B' : { if ( LocaleCompare ( keyword , \"background-color\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> background_color , exception ) ; break ; } if ( LocaleCompare ( keyword , \"blue-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . blue_primary . x = geometry_info . rho ; image -> chromaticity . blue_primary . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . blue_primary . y = image -> chromaticity . blue_primary . x ; break ; } if ( LocaleCompare ( keyword , \"border-color\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> border_color , exception ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'c' : case 'C' : { if ( LocaleCompare ( keyword , \"class\" ) == 0 ) { ssize_t storage_class ; storage_class = ParseCommandOption ( MagickClassOptions , MagickFalse , options ) ; if ( storage_class < 0 ) break ; image -> storage_class = ( ClassType ) storage_class ; break ; } if ( LocaleCompare ( keyword , \"colors\" ) == 0 ) { image -> colors = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"colorspace\" ) == 0 ) { ssize_t colorspace ; colorspace = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , options ) ; if ( colorspace < 0 ) break ; image -> colorspace = ( ColorspaceType ) colorspace ; break ; } if ( LocaleCompare ( keyword , \"compression\" ) == 0 ) { ssize_t compression ; compression = ParseCommandOption ( MagickCompressOptions , MagickFalse , options ) ; if ( compression < 0 ) break ; image -> compression = ( CompressionType ) compression ; break ; } if ( LocaleCompare ( keyword , \"columns\" ) == 0 ) { image -> columns = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'd' : case 'D' : { if ( LocaleCompare ( keyword , \"delay\" ) == 0 ) { image -> delay = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"depth\" ) == 0 ) { image -> depth = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"dispose\" ) == 0 ) { ssize_t dispose ; dispose = ParseCommandOption ( MagickDisposeOptions , MagickFalse , options ) ; if ( dispose < 0 ) break ; image -> dispose = ( DisposeType ) dispose ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'e' : case 'E' : { if ( LocaleCompare ( keyword , \"endian\" ) == 0 ) { ssize_t endian ; endian = ParseCommandOption ( MagickEndianOptions , MagickFalse , options ) ; if ( endian < 0 ) break ; image -> endian = ( EndianType ) endian ; break ; } if ( LocaleCompare ( keyword , \"error\" ) == 0 ) { image -> error . mean_error_per_pixel = StringToDouble ( options , ( char * * ) NULL ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'g' : case 'G' : { if ( LocaleCompare ( keyword , \"gamma\" ) == 0 ) { image -> gamma = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"green-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . green_primary . x = geometry_info . rho ; image -> chromaticity . green_primary . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . green_primary . y = image -> chromaticity . green_primary . x ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'i' : case 'I' : { if ( LocaleCompare ( keyword , \"id\" ) == 0 ) { ( void ) CopyMagickString ( id , options , MagickPathExtent ) ; break ; } if ( LocaleCompare ( keyword , \"iterations\" ) == 0 ) { image -> iterations = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'm' : case 'M' : { if ( LocaleCompare ( keyword , \"magick-signature\" ) == 0 ) { signature = ( unsigned int ) StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"mattecolor\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> matte_color , exception ) ; break ; } if ( LocaleCompare ( keyword , \"maximum-error\" ) == 0 ) { image -> error . normalized_maximum_error = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"mean-error\" ) == 0 ) { image -> error . normalized_mean_error = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"montage\" ) == 0 ) { ( void ) CloneString ( & image -> montage , options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'n' : case 'N' : { if ( LocaleCompare ( keyword , \"number-channels\" ) == 0 ) { image -> number_channels = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"number-meta-channels\" ) == 0 ) { image -> number_meta_channels = StringToUnsignedLong ( options ) ; <S2SV_StartBug> break ; <S2SV_EndBug> } break ; } case 'o' : case 'O' : { if ( LocaleCompare ( keyword , \"orientation\" ) == 0 ) { ssize_t orientation ; orientation = ParseCommandOption ( MagickOrientationOptions , MagickFalse , options ) ; if ( orientation < 0 ) break ; image -> orientation = ( OrientationType ) orientation ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'p' : case 'P' : { if ( LocaleCompare ( keyword , \"page\" ) == 0 ) { char * geometry ; geometry = GetPageGeometry ( options ) ; ( void ) ParseAbsoluteGeometry ( geometry , & image -> page ) ; geometry = DestroyString ( geometry ) ; break ; } if ( LocaleCompare ( keyword , \"pixel-intensity\" ) == 0 ) { ssize_t intensity ; intensity = ParseCommandOption ( MagickPixelIntensityOptions , MagickFalse , options ) ; if ( intensity < 0 ) break ; image -> intensity = ( PixelIntensityMethod ) intensity ; break ; } if ( ( LocaleNCompare ( keyword , \"profile:\" , 8 ) == 0 ) || ( LocaleNCompare ( keyword , \"profile-\" , 8 ) == 0 ) ) { if ( profiles == ( LinkedListInfo * ) NULL ) profiles = NewLinkedList ( 0 ) ; ( void ) AppendValueToLinkedList ( profiles , AcquireString ( keyword + 8 ) ) ; profile = BlobToStringInfo ( ( const void * ) NULL , ( size_t ) StringToLong ( options ) ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) SetImageProfile ( image , keyword + 8 , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'q' : case 'Q' : { if ( LocaleCompare ( keyword , \"quality\" ) == 0 ) { image -> quality = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'r' : case 'R' : { if ( LocaleCompare ( keyword , \"red-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . red_primary . x = geometry_info . rho ; if ( ( flags & SigmaValue ) != 0 ) image -> chromaticity . red_primary . y = geometry_info . sigma ; break ; } if ( LocaleCompare ( keyword , \"rendering-intent\" ) == 0 ) { ssize_t rendering_intent ; rendering_intent = ParseCommandOption ( MagickIntentOptions , MagickFalse , options ) ; if ( rendering_intent < 0 ) break ; image -> rendering_intent = ( RenderingIntent ) rendering_intent ; break ; } if ( LocaleCompare ( keyword , \"resolution\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> resolution . x = geometry_info . rho ; image -> resolution . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> resolution . y = image -> resolution . x ; break ; } if ( LocaleCompare ( keyword , \"rows\" ) == 0 ) { image -> rows = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 's' : case 'S' : { if ( LocaleCompare ( keyword , \"scene\" ) == 0 ) { image -> scene = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 't' : case 'T' : { if ( LocaleCompare ( keyword , \"ticks-per-second\" ) == 0 ) { image -> ticks_per_second = ( ssize_t ) StringToLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"tile-offset\" ) == 0 ) { char * geometry ; geometry = GetPageGeometry ( options ) ; ( void ) ParseAbsoluteGeometry ( geometry , & image -> tile_offset ) ; geometry = DestroyString ( geometry ) ; } if ( LocaleCompare ( keyword , \"type\" ) == 0 ) { ssize_t type ; type = ParseCommandOption ( MagickTypeOptions , MagickFalse , options ) ; if ( type < 0 ) break ; image -> type = ( ImageType ) type ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'u' : case 'U' : { if ( LocaleCompare ( keyword , \"units\" ) == 0 ) { ssize_t units ; units = ParseCommandOption ( MagickResolutionOptions , MagickFalse , options ) ; if ( units < 0 ) break ; image -> units = ( ResolutionType ) units ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'w' : case 'W' : { if ( LocaleCompare ( keyword , \"white-point\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . white_point . x = geometry_info . rho ; image -> chromaticity . white_point . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . white_point . y = image -> chromaticity . white_point . x ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } default : { ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } } } else c = ReadBlobByte ( image ) ; while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; } options = DestroyString ( options ) ; ( void ) ReadBlobByte ( image ) ; if ( ( LocaleCompare ( id , \"MagickCache\" ) != 0 ) || ( image -> storage_class == UndefinedClass ) || ( image -> compression == UndefinedCompression ) || ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( signature != GetMagickSignature ( ( const StringInfo * ) NULL ) ) ThrowReaderException ( CacheError , \"IncompatibleAPI\" ) ; if ( image -> montage != ( char * ) NULL ) { register char * p ; length = MagickPathExtent ; image -> directory = AcquireString ( ( char * ) NULL ) ; p = image -> directory ; do { * p = '\\\\0' ; if ( ( strlen ( image -> directory ) + MagickPathExtent ) >= length ) { length <<= 1 ; image -> directory = ( char * ) ResizeQuantumMemory ( image -> directory , length + MagickPathExtent , sizeof ( * image -> directory ) ) ; if ( image -> directory == ( char * ) NULL ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; p = image -> directory + strlen ( image -> directory ) ; } c = ReadBlobByte ( image ) ; * p ++ = ( char ) c ; } while ( c != ( int ) '\\\\0' ) ; } if ( profiles != ( LinkedListInfo * ) NULL ) { const char * name ; const StringInfo * profile ; register unsigned char * p ; ResetLinkedListIterator ( profiles ) ; name = ( const char * ) GetNextValueInLinkedList ( profiles ) ; while ( name != ( const char * ) NULL ) { profile = GetImageProfile ( image , name ) ; if ( profile != ( StringInfo * ) NULL ) { p = GetStringInfoDatum ( profile ) ; count = ReadBlob ( image , GetStringInfoLength ( profile ) , p ) ; } name = ( const char * ) GetNextValueInLinkedList ( profiles ) ; } profiles = DestroyLinkedList ( profiles , RelinquishMagickMemory ) ; } depth = GetImageQuantumDepth ( image , MagickFalse ) ; if ( image -> storage_class == PseudoClass ) { image -> colormap = ( PixelInfo * ) AcquireQuantumMemory ( image -> colors + 1 , sizeof ( * image -> colormap ) ) ; if ( image -> colormap == ( PixelInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( image -> colors != 0 ) { size_t packet_size ; unsigned char * colormap ; packet_size = ( size_t ) ( 3UL * depth / 8UL ) ; colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , packet_size * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , packet_size * image -> colors , colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) { colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = colormap ; switch ( depth ) { default : colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; ThrowReaderException ( CorruptImageError , \"ImageDepthNotSupported\" ) ; case 8 : { unsigned char pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . red = ScaleCharToQuantum ( pixel ) ; p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( pixel ) ; p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( pixel ) ; } break ; } case 16 : { unsigned short pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . red = ScaleShortToQuantum ( pixel ) ; p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . green = ScaleShortToQuantum ( pixel ) ; p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . blue = ScaleShortToQuantum ( pixel ) ; } break ; } case 32 : { unsigned int pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . red = ScaleLongToQuantum ( pixel ) ; p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . green = ScaleLongToQuantum ( pixel ) ; p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . blue = ScaleLongToQuantum ( pixel ) ; } break ; } } colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( ( AcquireMagickResource ( WidthResource , image -> columns ) == MagickFalse ) || ( AcquireMagickResource ( HeightResource , image -> rows ) == MagickFalse ) ) ThrowReaderException ( ImageError , \"WidthOrHeightExceedsLimit\" ) ; status = PersistPixelCache ( image , cache_filename , MagickTrue , & offset , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( CacheError , \"UnableToPersistPixelCache\" ) ; do { c = ReadBlobByte ( image ) ; } while ( ( isgraph ( c ) == MagickFalse ) && ( c != EOF ) ) ; if ( c != EOF ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( c != EOF ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> options ) ; if ( image -> number_meta_channels > MaxPixelChannels ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2015\n\n```\nCWE-399 int ext4_orphan_del ( handle_t * handle , struct inode * inode ) { struct list_head * prev ; struct ext4_inode_info * ei = EXT4_I ( inode ) ; struct ext4_sb_info * sbi ; __u32 ino_next ; struct ext4_iloc iloc ; int err = 0 ; <S2SV_StartBug> if ( ! EXT4_SB ( inode -> i_sb ) -> s_journal ) <S2SV_EndBug> return 0 ; mutex_lock ( & EXT4_SB ( inode -> i_sb ) -> s_orphan_lock ) ; if ( list_empty ( & ei -> i_orphan ) ) goto out ; ino_next = NEXT_ORPHAN ( inode ) ; prev = ei -> i_orphan . prev ; sbi = EXT4_SB ( inode -> i_sb ) ; jbd_debug ( 4 , \"remove<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>from<S2SV_blank>orphan<S2SV_blank>list\\\\n\" , inode -> i_ino ) ; list_del_init ( & ei -> i_orphan ) ; if ( ! handle ) goto out ; err = ext4_reserve_inode_write ( handle , inode , & iloc ) ; if ( err ) goto out_err ; if ( prev == & sbi -> s_orphan ) { jbd_debug ( 4 , \"superblock<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%u\\\\n\" , ino_next ) ; BUFFER_TRACE ( sbi -> s_sbh , \"get_write_access\" ) ; err = ext4_journal_get_write_access ( handle , sbi -> s_sbh ) ; if ( err ) goto out_brelse ; sbi -> s_es -> s_last_orphan = cpu_to_le32 ( ino_next ) ; err = ext4_handle_dirty_super ( handle , inode -> i_sb ) ; } else { struct ext4_iloc iloc2 ; struct inode * i_prev = & list_entry ( prev , struct ext4_inode_info , i_orphan ) -> vfs_inode ; jbd_debug ( 4 , \"orphan<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%u\\\\n\" , i_prev -> i_ino , ino_next ) ; err = ext4_reserve_inode_write ( handle , i_prev , & iloc2 ) ; if ( err ) goto out_brelse ; NEXT_ORPHAN ( i_prev ) = ino_next ; err = ext4_mark_iloc_dirty ( handle , i_prev , & iloc2 ) ; } if ( err ) goto out_brelse ; NEXT_ORPHAN ( inode ) = 0 ; err = ext4_mark_iloc_dirty ( handle , inode , & iloc ) ; out_err : ext4_std_error ( inode -> i_sb , err ) ; out : mutex_unlock ( & EXT4_SB ( inode -> i_sb ) -> s_orphan_lock ) ; return err ; out_brelse : brelse ( iloc . bh ) ; goto out_err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( <S2SV_ModStart> ) -> s_journal ) && ! ( EXT4_SB ( inode -> i_sb ) -> s_mount_state & EXT4_ORPHAN_FS )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10540\n\n```\nCWE-787 int ParseWave64HeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t total_samples = 0 , infilesize ; Wave64ChunkHeader chunk_header ; Wave64FileHeader filehdr ; WaveHeader WaveHeader ; uint32_t bcount ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & filehdr , fourcc , 4 ) ; if ( ! DoReadFile ( infile , ( ( char * ) & filehdr ) + 4 , sizeof ( Wave64FileHeader ) - 4 , & bcount ) || bcount != sizeof ( Wave64FileHeader ) - 4 || memcmp ( filehdr . ckID , riff_guid , sizeof ( riff_guid ) ) || memcmp ( filehdr . formType , wave_guid , sizeof ( wave_guid ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & filehdr , sizeof ( filehdr ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackLittleEndianToNative ( & filehdr , Wave64ChunkHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && filehdr . ckSize && filehdr . ckSize + 1 && filehdr . ckSize != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } # endif while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( Wave64ChunkHeader ) , & bcount ) || bcount != sizeof ( Wave64ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( Wave64ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , Wave64ChunkHeaderFormat ) ; chunk_header . ckSize -= sizeof ( chunk_header ) ; if ( ! memcmp ( chunk_header . ckID , fmt_guid , sizeof ( fmt_guid ) ) ) { int supported = TRUE , format ; chunk_header . ckSize = ( chunk_header . ckSize + 7 ) & ~ 7L ; if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , ( uint32_t ) chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , ( uint32_t ) chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.W64<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>W64<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! memcmp ( chunk_header . ckID , data_guid , sizeof ( data_guid ) ) ) { if ( ! WaveHeader . NumChannels ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ( config -> qmode & QMODE_IGNORE_LENGTH ) || chunk_header . ckSize <= 0 ) { config -> qmode |= QMODE_IGNORE_LENGTH ; if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { if ( infilesize && infilesize - chunk_header . ckSize > 16777216 ) { error_line ( \"this<S2SV_blank>.W64<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } total_samples = chunk_header . ckSize / WaveHeader . BlockAlign ; if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.W64<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 7 ) & ~ 7L ; <S2SV_StartBug> char * buff = malloc ( bytes_to_copy ) ; <S2SV_EndBug> if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1583\n\n```\nCWE-119 static struct dentry * proc_mount ( struct file_system_type * fs_type , int flags , const char * dev_name , void * data ) { int err ; struct super_block * sb ; struct pid_namespace * ns ; char * options ; if ( flags & MS_KERNMOUNT ) { ns = ( struct pid_namespace * ) data ; options = NULL ; } else { ns = task_active_pid_ns ( current ) ; options = data ; if ( ! ns_capable ( ns -> user_ns , CAP_SYS_ADMIN ) ) return ERR_PTR ( - EPERM ) ; } sb = sget ( fs_type , proc_test_super , proc_set_super , flags , ns ) ; if ( IS_ERR ( sb ) ) return ERR_CAST ( sb ) ; <S2SV_StartBug> if ( ! proc_parse_options ( options , ns ) ) { <S2SV_EndBug> deactivate_locked_super ( sb ) ; return ERR_PTR ( - EINVAL ) ; } if ( ! sb -> s_root ) { err = proc_fill_super ( sb ) ; if ( err ) { deactivate_locked_super ( sb ) ; return ERR_PTR ( err ) ; } sb -> s_flags |= MS_ACTIVE ; sb -> s_iflags |= SB_I_NOEXEC ; } return dget ( sb -> s_root ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sb ) ; sb -> s_stack_depth = FILESYSTEM_MAX_STACK_DEPTH ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 int tls1_setup_key_block ( SSL * s ) { unsigned char * p ; const EVP_CIPHER * c ; const EVP_MD * hash ; int num ; SSL_COMP * comp ; int mac_type = NID_undef , mac_secret_size = 0 ; int ret = 0 ; if ( s -> s3 -> tmp . key_block_length != 0 ) return ( 1 ) ; if ( ! ssl_cipher_get_evp ( s -> session , & c , & hash , & mac_type , & mac_secret_size , & comp , <S2SV_StartBug> SSL_USE_ETM ( s ) ) ) { <S2SV_EndBug> SSLerr ( SSL_F_TLS1_SETUP_KEY_BLOCK , SSL_R_CIPHER_OR_HASH_UNAVAILABLE ) ; return ( 0 ) ; } s -> s3 -> tmp . new_sym_enc = c ; s -> s3 -> tmp . new_hash = hash ; s -> s3 -> tmp . new_mac_pkey_type = mac_type ; s -> s3 -> tmp . new_mac_secret_size = mac_secret_size ; num = EVP_CIPHER_key_length ( c ) + mac_secret_size + EVP_CIPHER_iv_length ( c ) ; num *= 2 ; ssl3_cleanup_key_block ( s ) ; if ( ( p = OPENSSL_malloc ( num ) ) == NULL ) { SSLerr ( SSL_F_TLS1_SETUP_KEY_BLOCK , ERR_R_MALLOC_FAILURE ) ; goto err ; } s -> s3 -> tmp . key_block_length = num ; s -> s3 -> tmp . key_block = p ; # ifdef SSL_DEBUG printf ( \"client<S2SV_blank>random\\\\n\" ) ; { int z ; for ( z = 0 ; z < SSL3_RANDOM_SIZE ; z ++ ) printf ( \"%02X%c\" , s -> s3 -> client_random [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } printf ( \"server<S2SV_blank>random\\\\n\" ) ; { int z ; for ( z = 0 ; z < SSL3_RANDOM_SIZE ; z ++ ) printf ( \"%02X%c\" , s -> s3 -> server_random [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } printf ( \"master<S2SV_blank>key\\\\n\" ) ; { int z ; for ( z = 0 ; z < s -> session -> master_key_length ; z ++ ) printf ( \"%02X%c\" , s -> session -> master_key [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } # endif if ( ! tls1_generate_key_block ( s , p , num ) ) goto err ; # ifdef SSL_DEBUG printf ( \"\\\\nkey<S2SV_blank>block\\\\n\" ) ; { int z ; for ( z = 0 ; z < num ; z ++ ) printf ( \"%02X%c\" , p [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } # endif if ( ! ( s -> options & SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS ) && s -> method -> version <= TLS1_VERSION ) { s -> s3 -> need_empty_fragments = 1 ; if ( s -> session -> cipher != NULL ) { if ( s -> session -> cipher -> algorithm_enc == SSL_eNULL ) s -> s3 -> need_empty_fragments = 0 ; # ifndef OPENSSL_NO_RC4 if ( s -> session -> cipher -> algorithm_enc == SSL_RC4 ) s -> s3 -> need_empty_fragments = 0 ; # endif } } ret = 1 ; err : return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & comp , s -> tlsext_use_etm <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int jas_iccgetuint16 ( jas_stream_t * in , jas_iccuint16_t * val ) { <S2SV_StartBug> ulonglong tmp ; <S2SV_EndBug> if ( jas_iccgetuint ( in , 2 , & tmp ) ) return - 1 ; * val = tmp ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { jas_ulonglong <S2SV_ModEnd> tmp ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3224\n\n```\nCWE-200 int bt_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct sk_buff * skb ; size_t copied ; int err ; BT_DBG ( \"sock<S2SV_blank>%p<S2SV_blank>sk<S2SV_blank>%p<S2SV_blank>len<S2SV_blank>%zu\" , sock , sk , len ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; <S2SV_StartBug> skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; <S2SV_EndBug> if ( ! skb ) { if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( skb ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err == 0 ) sock_recv_ts_and_drops ( msg , sk , skb ) ; skb_free_datagram ( sk , skb ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EOPNOTSUPP ; msg -> msg_namelen = 0 ; <S2SV_ModStart> err ; } <S2SV_ModEnd> copied = skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1944\n\n```\nCWE-200 <S2SV_StartBug> static bool tailmatch ( const char * little , const char * bigone ) <S2SV_EndBug> { <S2SV_StartBug> size_t littlelen = strlen ( little ) ; <S2SV_EndBug> <S2SV_StartBug> size_t biglen = strlen ( bigone ) ; <S2SV_EndBug> <S2SV_StartBug> if ( littlelen > biglen ) <S2SV_EndBug> return FALSE ; <S2SV_StartBug> return Curl_raw_equal ( little , bigone + biglen - littlelen ) ? TRUE : FALSE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const char * cooke_domain <S2SV_ModEnd> , const char <S2SV_ModStart> const char * hostname <S2SV_ModEnd> ) { size_t <S2SV_ModStart> ) { size_t cookie_domain_len <S2SV_ModEnd> = strlen ( <S2SV_ModStart> = strlen ( cooke_domain <S2SV_ModEnd> ) ; size_t <S2SV_ModStart> ) ; size_t hostname_len <S2SV_ModEnd> = strlen ( <S2SV_ModStart> = strlen ( hostname <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; if ( hostname_len < cookie_domain_len <S2SV_ModEnd> ) return FALSE <S2SV_ModStart> return FALSE ; if ( ! Curl_raw_equal ( cooke_domain , hostname + hostname_len - cookie_domain_len ) ) return FALSE ; if ( hostname_len == cookie_domain_len ) return TRUE ; if ( '.' == * ( hostname + hostname_len - cookie_domain_len - 1 ) ) return TRUE ; return <S2SV_ModEnd> FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18174\n\n```\nCWE-415 static int amd_gpio_remove ( struct platform_device * pdev ) { struct amd_gpio * gpio_dev ; gpio_dev = platform_get_drvdata ( pdev ) ; gpiochip_remove ( & gpio_dev -> gc ) ; <S2SV_StartBug> pinctrl_unregister ( gpio_dev -> pctrl ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gc ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_disable_segmentation ( struct segmentation * seg ) { seg -> enabled = 0 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; seg -> update_map = 0 ; seg -> update_data = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4312\n\n```\nCWE-119 static int unix_attach_fds ( struct scm_cookie * scm , struct sk_buff * skb ) { int i ; unsigned char max_level = 0 ; int unix_sock_count = 0 ; <S2SV_StartBug> for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) { <S2SV_EndBug> struct sock * sk = unix_get_socket ( scm -> fp -> fp [ i ] ) ; if ( sk ) { unix_sock_count ++ ; max_level = max ( max_level , unix_sk ( sk ) -> recursion_level ) ; } } if ( unlikely ( max_level > MAX_RECURSION_LEVEL ) ) return - ETOOMANYREFS ; UNIXCB ( skb ) . fp = scm_fp_dup ( scm -> fp ) ; if ( ! UNIXCB ( skb ) . fp ) return - ENOMEM ; <S2SV_StartBug> if ( unix_sock_count ) { <S2SV_EndBug> for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) unix_inflight ( scm -> fp -> fp [ i ] ) ; <S2SV_StartBug> } <S2SV_EndBug> return max_level ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; if ( too_many_unix_fds ( current ) ) return - ETOOMANYREFS ; <S2SV_ModStart> - ENOMEM ; <S2SV_ModEnd> for ( i <S2SV_ModStart> ] ) ; <S2SV_ModEnd> return max_level ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 char * path_name ( const struct name_path * path , const char * name ) { const struct name_path * p ; char * n , * m ; int nlen = strlen ( name ) ; int len = nlen + 1 ; for ( p = path ; p ; p = p -> up ) { if ( p -> elem_len ) len += p -> elem_len + 1 ; } n = xmalloc ( len ) ; m = n + len - ( nlen + 1 ) ; <S2SV_StartBug> strcpy ( m , name ) ; <S2SV_EndBug> for ( p = path ; p ; p = p -> up ) { if ( p -> elem_len ) { m -= p -> elem_len + 1 ; memcpy ( m , p -> elem , p -> elem_len ) ; m [ p -> elem_len ] = '/' ; } } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; memcpy <S2SV_ModEnd> ( m , <S2SV_ModStart> m , name , nlen + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10506\n\n```\nCWE-369 static OPJ_BOOL opj_pi_next_rpcl ( opj_pi_iterator_t * pi ) { opj_pi_comp_t * comp = NULL ; opj_pi_resolution_t * res = NULL ; OPJ_UINT32 index = 0 ; if ( ! pi -> first ) { goto LABEL_SKIP ; } else { OPJ_UINT32 compno , resno ; pi -> first = 0 ; pi -> dx = 0 ; pi -> dy = 0 ; for ( compno = 0 ; compno < pi -> numcomps ; compno ++ ) { comp = & pi -> comps [ compno ] ; for ( resno = 0 ; resno < comp -> numresolutions ; resno ++ ) { OPJ_UINT32 dx , dy ; res = & comp -> resolutions [ resno ] ; dx = comp -> dx * ( 1u << ( res -> pdx + comp -> numresolutions - 1 - resno ) ) ; dy = comp -> dy * ( 1u << ( res -> pdy + comp -> numresolutions - 1 - resno ) ) ; pi -> dx = ! pi -> dx ? dx : opj_uint_min ( pi -> dx , dx ) ; pi -> dy = ! pi -> dy ? dy : opj_uint_min ( pi -> dy , dy ) ; } } } if ( ! pi -> tp_on ) { pi -> poc . ty0 = pi -> ty0 ; pi -> poc . tx0 = pi -> tx0 ; pi -> poc . ty1 = pi -> ty1 ; pi -> poc . tx1 = pi -> tx1 ; } for ( pi -> resno = pi -> poc . resno0 ; pi -> resno < pi -> poc . resno1 ; pi -> resno ++ ) { for ( pi -> y = pi -> poc . ty0 ; pi -> y < pi -> poc . ty1 ; pi -> y += ( OPJ_INT32 ) ( pi -> dy - ( OPJ_UINT32 ) ( pi -> y % ( OPJ_INT32 ) pi -> dy ) ) ) { for ( pi -> x = pi -> poc . tx0 ; pi -> x < pi -> poc . tx1 ; pi -> x += ( OPJ_INT32 ) ( pi -> dx - ( OPJ_UINT32 ) ( pi -> x % ( OPJ_INT32 ) pi -> dx ) ) ) { for ( pi -> compno = pi -> poc . compno0 ; pi -> compno < pi -> poc . compno1 ; pi -> compno ++ ) { OPJ_UINT32 levelno ; OPJ_INT32 trx0 , try0 ; OPJ_INT32 trx1 , try1 ; OPJ_UINT32 rpx , rpy ; OPJ_INT32 prci , prcj ; comp = & pi -> comps [ pi -> compno ] ; if ( pi -> resno >= comp -> numresolutions ) { continue ; } res = & comp -> resolutions [ pi -> resno ] ; levelno = comp -> numresolutions - 1 - pi -> resno ; trx0 = opj_int_ceildiv ( pi -> tx0 , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) ; try0 = opj_int_ceildiv ( pi -> ty0 , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) ; trx1 = opj_int_ceildiv ( pi -> tx1 , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) ; try1 = opj_int_ceildiv ( pi -> ty1 , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) ; rpx = res -> pdx + levelno ; rpy = res -> pdy + levelno ; <S2SV_StartBug> if ( ! ( ( pi -> y % ( OPJ_INT32 ) ( comp -> dy << rpy ) == 0 ) || ( ( pi -> y == pi -> ty0 ) && <S2SV_EndBug> ( ( try0 << levelno ) % ( 1 << rpy ) ) ) ) ) { continue ; } if ( ! ( ( pi -> x % ( OPJ_INT32 ) ( comp -> dx << rpx ) == 0 ) || ( ( pi -> x == pi -> tx0 ) && ( ( trx0 << levelno ) % ( 1 << rpx ) ) ) ) ) { continue ; } if ( ( res -> pw == 0 ) || ( res -> ph == 0 ) ) { continue ; } if ( ( trx0 == trx1 ) || ( try0 == try1 ) ) { continue ; } prci = opj_int_floordivpow2 ( opj_int_ceildiv ( pi -> x , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) , ( OPJ_INT32 ) res -> pdx ) - opj_int_floordivpow2 ( trx0 , ( OPJ_INT32 ) res -> pdx ) ; prcj = opj_int_floordivpow2 ( opj_int_ceildiv ( pi -> y , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) , ( OPJ_INT32 ) res -> pdy ) - opj_int_floordivpow2 ( try0 , ( OPJ_INT32 ) res -> pdy ) ; pi -> precno = ( OPJ_UINT32 ) ( prci + prcj * ( OPJ_INT32 ) res -> pw ) ; for ( pi -> layno = pi -> poc . layno0 ; pi -> layno < pi -> poc . layno1 ; pi -> layno ++ ) { index = pi -> layno * pi -> step_l + pi -> resno * pi -> step_r + pi -> compno * pi -> step_c + pi -> precno * pi -> step_p ; if ( ! pi -> include [ index ] ) { pi -> include [ index ] = 1 ; return OPJ_TRUE ; } LABEL_SKIP : ; } } } } } return OPJ_FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( rpx >= 31 || ( ( comp -> dx << rpx ) >> rpx ) != comp -> dx || rpy >= 31 || ( ( comp -> dy << rpy ) >> rpy ) != comp -> dy ) { continue ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 gboolean mainloop_destroy_trigger ( crm_trigger_t * source ) { source -> trigger = FALSE ; if ( source -> id > 0 ) { g_source_remove ( source -> id ) ; <S2SV_StartBug> } <S2SV_EndBug> return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ) ; source -> id = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1792\n\n```\nCWE-362 int install_user_keyrings ( void ) { struct user_struct * user ; const struct cred * cred ; struct key * uid_keyring , * session_keyring ; key_perm_t user_keyring_perm ; char buf [ 20 ] ; int ret ; uid_t uid ; user_keyring_perm = ( KEY_POS_ALL & ~ KEY_POS_SETATTR ) | KEY_USR_ALL ; cred = current_cred ( ) ; user = cred -> user ; uid = from_kuid ( cred -> user_ns , user -> uid ) ; kenter ( \"%p{%u}\" , user , uid ) ; <S2SV_StartBug> if ( user -> uid_keyring ) { <S2SV_EndBug> kleave ( \"<S2SV_blank>=<S2SV_blank>0<S2SV_blank>[exist]\" ) ; return 0 ; } mutex_lock ( & key_user_keyring_mutex ) ; ret = 0 ; if ( ! user -> uid_keyring ) { sprintf ( buf , \"_uid.%u\" , uid ) ; uid_keyring = find_keyring_by_name ( buf , true ) ; if ( IS_ERR ( uid_keyring ) ) { uid_keyring = keyring_alloc ( buf , user -> uid , INVALID_GID , cred , user_keyring_perm , KEY_ALLOC_IN_QUOTA , NULL ) ; if ( IS_ERR ( uid_keyring ) ) { ret = PTR_ERR ( uid_keyring ) ; goto error ; } } sprintf ( buf , \"_uid_ses.%u\" , uid ) ; session_keyring = find_keyring_by_name ( buf , true ) ; if ( IS_ERR ( session_keyring ) ) { session_keyring = keyring_alloc ( buf , user -> uid , INVALID_GID , cred , user_keyring_perm , KEY_ALLOC_IN_QUOTA , NULL ) ; if ( IS_ERR ( session_keyring ) ) { ret = PTR_ERR ( session_keyring ) ; goto error_release ; } ret = key_link ( session_keyring , uid_keyring ) ; if ( ret < 0 ) goto error_release_both ; } user -> uid_keyring = uid_keyring ; user -> session_keyring = session_keyring ; } mutex_unlock ( & key_user_keyring_mutex ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>0\" ) ; return 0 ; error_release_both : key_put ( session_keyring ) ; error_release : key_put ( uid_keyring ) ; error : mutex_unlock ( & key_user_keyring_mutex ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> user -> uid_keyring && user -> session_keyring\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10807\n\n```\nCWE-287 static int _c2s_sx_sasl_callback ( int cb , void * arg , void * * res , sx_t s , void * cbarg ) { c2s_t c2s = ( c2s_t ) cbarg ; const char * my_realm , * mech ; sx_sasl_creds_t creds ; static char buf [ 3072 ] ; char mechbuf [ 256 ] ; struct jid_st jid ; jid_static_buf jid_buf ; int i , r ; sess_t sess ; char skey [ 44 ] ; host_t host ; jid_static ( & jid , & jid_buf ) ; assert ( s != NULL ) ; sprintf ( skey , \"%d\" , s -> tag ) ; sess = xhash_get ( c2s -> sessions , skey ) ; switch ( cb ) { case sx_sasl_cb_GET_REALM : if ( s -> req_to == NULL ) my_realm = \"\" ; else { host = xhash_get ( c2s -> hosts , s -> req_to ) ; if ( host == NULL ) { log_write ( c2s -> log , LOG_ERR , \"SASL<S2SV_blank>callback<S2SV_blank>for<S2SV_blank>non-existing<S2SV_blank>host:<S2SV_blank>%s\" , s -> req_to ) ; * res = ( void * ) NULL ; return sx_sasl_ret_FAIL ; } my_realm = host -> realm ; if ( my_realm == NULL ) my_realm = s -> req_to ; } strncpy ( buf , my_realm , 256 ) ; * res = ( void * ) buf ; log_debug ( ZONE , \"sx<S2SV_blank>sasl<S2SV_blank>callback:<S2SV_blank>get<S2SV_blank>realm:<S2SV_blank>realm<S2SV_blank>is<S2SV_blank>\\'%s\\'\" , buf ) ; return sx_sasl_ret_OK ; break ; case sx_sasl_cb_GET_PASS : assert ( sess != NULL ) ; creds = ( sx_sasl_creds_t ) arg ; log_debug ( ZONE , \"sx<S2SV_blank>sasl<S2SV_blank>callback:<S2SV_blank>get<S2SV_blank>pass<S2SV_blank>(authnid=%s,<S2SV_blank>realm=%s)\" , creds -> authnid , creds -> realm ) ; if ( sess -> host -> ar -> get_password && ( sess -> host -> ar -> get_password ) ( sess -> host -> ar , sess , ( char * ) creds -> authnid , ( creds -> realm != NULL ) ? ( char * ) creds -> realm : \"\" , buf ) == 0 ) { * res = buf ; return sx_sasl_ret_OK ; } return sx_sasl_ret_FAIL ; case sx_sasl_cb_CHECK_PASS : assert ( sess != NULL ) ; creds = ( sx_sasl_creds_t ) arg ; log_debug ( ZONE , \"sx<S2SV_blank>sasl<S2SV_blank>callback:<S2SV_blank>check<S2SV_blank>pass<S2SV_blank>(authnid=%s,<S2SV_blank>realm=%s)\" , creds -> authnid , creds -> realm ) ; if ( sess -> host -> ar -> check_password != NULL ) { if ( ( sess -> host -> ar -> check_password ) ( sess -> host -> ar , sess , ( char * ) creds -> authnid , ( creds -> realm != NULL ) ? ( char * ) creds -> realm : \"\" , ( char * ) creds -> pass ) == 0 ) return sx_sasl_ret_OK ; else return sx_sasl_ret_FAIL ; } if ( sess -> host -> ar -> get_password != NULL ) { if ( ( sess -> host -> ar -> get_password ) ( sess -> host -> ar , sess , ( char * ) creds -> authnid , ( creds -> realm != NULL ) ? ( char * ) creds -> realm : \"\" , buf ) != 0 ) return sx_sasl_ret_FAIL ; if ( strcmp ( creds -> pass , buf ) == 0 ) return sx_sasl_ret_OK ; } return sx_sasl_ret_FAIL ; break ; case sx_sasl_cb_CHECK_AUTHZID : assert ( sess != NULL ) ; creds = ( sx_sasl_creds_t ) arg ; if ( creds -> authzid == NULL || creds -> authzid [ 0 ] == '\\\\0' ) return sx_sasl_ret_FAIL ; if ( jid_reset ( & jid , creds -> authzid , - 1 ) == NULL ) return sx_sasl_ret_FAIL ; if ( ! s -> req_to || ( strcmp ( jid . domain , s -> req_to ) != 0 ) ) return sx_sasl_ret_FAIL ; if ( jid . resource [ 0 ] != '\\\\0' ) return sx_sasl_ret_FAIL ; if ( sess -> host -> ar -> user_authz_allowed ) { if ( sess -> host -> ar -> user_authz_allowed ( sess -> host -> ar , sess , ( char * ) creds -> authnid , ( char * ) creds -> realm , ( char * ) creds -> authzid ) ) return sx_sasl_ret_OK ; } else { if ( strcmp ( creds -> authnid , jid . node ) == 0 && ( sess -> host -> ar -> user_exists ) ( sess -> host -> ar , sess , jid . node , jid . domain ) ) return sx_sasl_ret_OK ; } return sx_sasl_ret_FAIL ; case sx_sasl_cb_GEN_AUTHZID : jid_reset ( & jid , s -> req_to , - 1 ) ; jid_random_part ( & jid , jid_NODE ) ; strcpy ( buf , jid . node ) ; * res = ( void * ) buf ; return sx_sasl_ret_OK ; break ; case sx_sasl_cb_CHECK_MECH : mech = ( char * ) arg ; strncpy ( mechbuf , mech , sizeof ( mechbuf ) ) ; mechbuf [ sizeof ( mechbuf ) - 1 ] = '\\\\0' ; <S2SV_StartBug> for ( i = 0 ; mechbuf [ i ] ; i ++ ) mechbuf [ i ] = tolower ( mechbuf [ i ] ) ; <S2SV_EndBug> host = xhash_get ( c2s -> hosts , s -> req_to ) ; if ( host == NULL ) { log_write ( c2s -> log , LOG_WARNING , \"SASL<S2SV_blank>callback<S2SV_blank>for<S2SV_blank>non-existing<S2SV_blank>host:<S2SV_blank>%s\" , s -> req_to ) ; return sx_sasl_ret_FAIL ; } if ( strcmp ( mechbuf , \"digest-md5\" ) == 0 ) { if ( host -> ar -> get_password == NULL ) return sx_sasl_ret_FAIL ; } else if ( strcmp ( mechbuf , \"plain\" ) == 0 ) { if ( host -> ar -> get_password == NULL && host -> ar -> check_password == NULL ) return sx_sasl_ret_FAIL ; } if ( s -> ssf > 0 ) { r = snprintf ( buf , sizeof ( buf ) , \"authreg.ssl-mechanisms.sasl.%s\" , mechbuf ) ; if ( r < - 1 || r > sizeof ( buf ) ) return sx_sasl_ret_FAIL ; if ( config_get ( c2s -> config , buf ) != NULL ) return sx_sasl_ret_OK ; } r = snprintf ( buf , sizeof ( buf ) , \"authreg.mechanisms.sasl.%s\" , mechbuf ) ; if ( r < - 1 || r > sizeof ( buf ) ) return sx_sasl_ret_FAIL ; if ( config_get ( c2s -> config , buf ) != NULL ) return sx_sasl_ret_OK ; else return sx_sasl_ret_FAIL ; default : break ; } return sx_sasl_ret_FAIL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ i ] ) ; log_debug ( ZONE , \"sx<S2SV_blank>sasl<S2SV_blank>callback:<S2SV_blank>check<S2SV_blank>mech<S2SV_blank>(mech=%s)\" , mechbuf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 <S2SV_StartBug> static void __evtchn_fifo_handle_events ( unsigned cpu , bool drop ) <S2SV_EndBug> { struct evtchn_fifo_control_block * control_block ; unsigned long ready ; unsigned q ; control_block = per_cpu ( cpu_control_block , cpu ) ; ready = xchg ( & control_block -> ready , 0 ) ; while ( ready ) { q = find_first_bit ( & ready , EVTCHN_FIFO_MAX_QUEUES ) ; <S2SV_StartBug> consume_one_event ( cpu , control_block , q , & ready , drop ) ; <S2SV_EndBug> ready |= xchg ( & control_block -> ready , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned cpu , struct evtchn_loop_ctrl * ctrl <S2SV_ModEnd> ) { struct <S2SV_ModStart> ( cpu , ctrl , <S2SV_ModStart> , & ready <S2SV_ModEnd> ) ; ready\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-255(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4966\n\n```\nCWE-255 static int unix_getpw ( UNUSED void * instance , REQUEST * request , VALUE_PAIR * * vp_list ) { const char * name ; const char * encrypted_pass ; # ifdef HAVE_GETSPNAM struct spwd * spwd = NULL ; # endif # ifdef OSFC2 struct pr_passwd * pr_pw ; # else struct passwd * pwd ; # endif # ifdef HAVE_GETUSERSHELL char * shell ; # endif VALUE_PAIR * vp ; if ( ! request -> username ) { return RLM_MODULE_NOOP ; } name = ( char * ) request -> username -> vp_strvalue ; encrypted_pass = NULL ; # ifdef OSFC2 if ( ( pr_pw = getprpwnam ( name ) ) == NULL ) return RLM_MODULE_NOTFOUND ; encrypted_pass = pr_pw -> ufld . fd_encrypt ; if ( pr_pw -> uflg . fg_lock != 1 ) { radlog ( L_AUTH , \"rlm_unix:<S2SV_blank>[%s]:<S2SV_blank>account<S2SV_blank>locked\" , name ) ; return RLM_MODULE_USERLOCK ; } # else if ( ( pwd = getpwnam ( name ) ) == NULL ) { return RLM_MODULE_NOTFOUND ; } encrypted_pass = pwd -> pw_passwd ; # endif # ifdef HAVE_GETSPNAM if ( ( encrypted_pass == NULL ) || ( strlen ( encrypted_pass ) < 10 ) ) { if ( ( spwd = getspnam ( name ) ) == NULL ) { return RLM_MODULE_NOTFOUND ; } encrypted_pass = spwd -> sp_pwdp ; } # endif # ifndef OSFC2 # ifdef DENY_SHELL if ( strcmp ( pwd -> pw_shell , DENY_SHELL ) == 0 ) { radlog_request ( L_AUTH , 0 , request , \"rlm_unix:<S2SV_blank>[%s]:<S2SV_blank>invalid<S2SV_blank>shell\" , name ) ; return RLM_MODULE_REJECT ; } # endif # ifdef HAVE_GETUSERSHELL while ( ( shell = getusershell ( ) ) != NULL ) { if ( strcmp ( shell , pwd -> pw_shell ) == 0 || strcmp ( shell , \"/RADIUSD/ANY/SHELL\" ) == 0 ) { break ; } } endusershell ( ) ; if ( shell == NULL ) { radlog_request ( L_AUTH , 0 , request , \"[%s]:<S2SV_blank>invalid<S2SV_blank>shell<S2SV_blank>[%s]\" , name , pwd -> pw_shell ) ; return RLM_MODULE_REJECT ; } # endif # endif # if defined ( HAVE_GETSPNAM ) && ! defined ( M_UNIX ) <S2SV_StartBug> if ( spwd && spwd -> sp_expire > 0 && <S2SV_EndBug> <S2SV_StartBug> ( request -> timestamp / 86400 ) > spwd -> sp_expire ) { <S2SV_EndBug> <S2SV_StartBug> radlog_request ( L_AUTH , 0 , request , \"[%s]:<S2SV_blank>password<S2SV_blank>has<S2SV_blank>expired\" , name ) ; <S2SV_EndBug> return RLM_MODULE_REJECT ; } # endif # if defined ( __FreeBSD__ ) || defined ( bsdi ) || defined ( _PWF_EXPIRE ) if ( ( pwd -> pw_expire > 0 ) && ( request -> timestamp > pwd -> pw_expire ) ) { radlog_request ( L_AUTH , 0 , request , \"[%s]:<S2SV_blank>password<S2SV_blank>has<S2SV_blank>expired\" , name ) ; return RLM_MODULE_REJECT ; } # endif if ( encrypted_pass [ 0 ] == 0 ) return RLM_MODULE_NOOP ; vp = pairmake ( \"Crypt-Password\" , encrypted_pass , T_OP_SET ) ; if ( ! vp ) return RLM_MODULE_FAIL ; pairmove ( vp_list , & vp ) ; pairfree ( & vp ) ; return RLM_MODULE_UPDATED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && spwd -> sp_lstchg > 0 && spwd -> sp_max >= <S2SV_ModEnd> 0 && ( <S2SV_ModStart> 86400 ) > ( spwd -> sp_lstchg + spwd -> sp_max ) ) { radlog_request ( L_AUTH , 0 , request , \"[%s]:<S2SV_blank>password<S2SV_blank>has<S2SV_blank>expired\" , name ) ; return RLM_MODULE_REJECT ; } if ( spwd && <S2SV_ModStart> spwd -> sp_expire > 0 && ( request -> timestamp / 86400 ) > spwd -> sp_expire <S2SV_ModStart> , request , \"[%s]:<S2SV_blank>account<S2SV_blank>has<S2SV_blank>expired\" <S2SV_ModEnd> , name )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_adapt_mv_probs ( VP9_COMMON * cm , int allow_hp ) { int i , j ; <S2SV_StartBug> nmv_context * fc = & cm -> fc . nmvc ; <S2SV_EndBug> const nmv_context * pre_fc = & cm -> frame_contexts [ cm -> frame_context_idx ] . nmvc ; const nmv_context_counts * counts = & cm -> counts . mv ; <S2SV_StartBug> adapt_probs ( vp9_mv_joint_tree , pre_fc -> joints , counts -> joints , fc -> joints ) ; <S2SV_EndBug> for ( i = 0 ; i < 2 ; ++ i ) { nmv_component * comp = & fc -> comps [ i ] ; const nmv_component * pre_comp = & pre_fc -> comps [ i ] ; const nmv_component_counts * c = & counts -> comps [ i ] ; <S2SV_StartBug> comp -> sign = adapt_prob ( pre_comp -> sign , c -> sign ) ; <S2SV_EndBug> <S2SV_StartBug> adapt_probs ( vp9_mv_class_tree , pre_comp -> classes , c -> classes , <S2SV_EndBug> comp -> classes ) ; <S2SV_StartBug> adapt_probs ( vp9_mv_class0_tree , pre_comp -> class0 , c -> class0 , comp -> class0 ) ; <S2SV_EndBug> for ( j = 0 ; j < MV_OFFSET_BITS ; ++ j ) <S2SV_StartBug> comp -> bits [ j ] = adapt_prob ( pre_comp -> bits [ j ] , c -> bits [ j ] ) ; <S2SV_EndBug> for ( j = 0 ; j < CLASS0_SIZE ; ++ j ) <S2SV_StartBug> adapt_probs ( vp9_mv_fp_tree , pre_comp -> class0_fp [ j ] , c -> class0_fp [ j ] , <S2SV_EndBug> comp -> class0_fp [ j ] ) ; <S2SV_StartBug> adapt_probs ( vp9_mv_fp_tree , pre_comp -> fp , c -> fp , comp -> fp ) ; <S2SV_EndBug> if ( allow_hp ) { <S2SV_StartBug> comp -> class0_hp = adapt_prob ( pre_comp -> class0_hp , c -> class0_hp ) ; <S2SV_EndBug> <S2SV_StartBug> comp -> hp = adapt_prob ( pre_comp -> hp , c -> hp ) ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> nmvc ; const <S2SV_ModStart> . mv ; vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_mv_joint_tree , <S2SV_ModStart> -> sign = mode_mv_merge_probs <S2SV_ModEnd> ( pre_comp -> <S2SV_ModStart> sign ) ; vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_mv_class_tree , <S2SV_ModStart> classes ) ; vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_mv_class0_tree , <S2SV_ModStart> j ] = mode_mv_merge_probs <S2SV_ModEnd> ( pre_comp -> <S2SV_ModStart> ++ j ) vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_mv_fp_tree , <S2SV_ModStart> ] ) ; vpx_tree_merge_probs <S2SV_ModEnd> ( vp9_mv_fp_tree , <S2SV_ModStart> -> class0_hp = mode_mv_merge_probs <S2SV_ModEnd> ( pre_comp -> <S2SV_ModStart> -> hp = mode_mv_merge_probs <S2SV_ModEnd> ( pre_comp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 static void ieee80211_if_setup ( struct net_device * dev ) { ether_setup ( dev ) ; <S2SV_StartBug> dev -> netdev_ops = & ieee80211_dataif_ops ; <S2SV_EndBug> dev -> destructor = free_netdev ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9761\n\n```\nCWE-119 static int cmd_info ( void * data , const char * input ) { RCore * core = ( RCore * ) data ; bool newline = r_config_get_i ( core -> config , \"scr.interactive\" ) ; RBinObject * o = r_bin_cur_object ( core -> bin ) ; RCoreFile * cf = core -> file ; int i , va = core -> io -> va || core -> io -> debug ; int mode = 0 ; int is_array = 0 ; Sdb * db ; for ( i = 0 ; input [ i ] && input [ i ] != '<S2SV_blank>' ; i ++ ) ; if ( i > 0 ) { switch ( input [ i - 1 ] ) { case '*' : mode = R_CORE_BIN_RADARE ; break ; case 'j' : mode = R_CORE_BIN_JSON ; break ; case 'q' : mode = R_CORE_BIN_SIMPLE ; break ; } } if ( mode == R_CORE_BIN_JSON ) { if ( strlen ( input + 1 ) > 1 ) { is_array = 1 ; } } if ( is_array ) { r_cons_printf ( \"{\" ) ; } if ( ! * input ) { cmd_info_bin ( core , va , mode ) ; } if ( ! strcmp ( input , \"*\" ) ) { input = \"I*\" ; } RBinObject * obj = r_bin_cur_object ( core -> bin ) ; while ( * input ) { switch ( * input ) { case 'b' : { ut64 baddr = r_config_get_i ( core -> config , \"bin.baddr\" ) ; if ( input [ 1 ] == '<S2SV_blank>' ) { baddr = r_num_math ( core -> num , input + 1 ) ; } r_core_bin_reload ( core , NULL , baddr ) ; r_core_block_read ( core ) ; newline = false ; } break ; case 'k' : db = o ? o -> kv : NULL ; switch ( input [ 1 ] ) { case 'v' : if ( db ) { char * o = sdb_querys ( db , NULL , 0 , input + 3 ) ; if ( o && * o ) { r_cons_print ( o ) ; } free ( o ) ; } break ; case '*' : r_core_bin_export_info_rad ( core ) ; break ; case '.' : case '<S2SV_blank>' : if ( db ) { char * o = sdb_querys ( db , NULL , 0 , input + 2 ) ; if ( o && * o ) { r_cons_print ( o ) ; } free ( o ) ; } break ; case '\\\\0' : if ( db ) { char * o = sdb_querys ( db , NULL , 0 , \"*\" ) ; if ( o && * o ) { r_cons_print ( o ) ; } free ( o ) ; } break ; case '?' : default : eprintf ( \"Usage:<S2SV_blank>ik<S2SV_blank>[sdb-query]\\\\n\" ) ; eprintf ( \"Usage:<S2SV_blank>ik*<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>#<S2SV_blank>load<S2SV_blank>all<S2SV_blank>header<S2SV_blank>information\\\\n\" ) ; } goto done ; break ; case 'o' : { if ( ! cf ) { eprintf ( \"Core<S2SV_blank>file<S2SV_blank>not<S2SV_blank>open\\\\n\" ) ; return 0 ; } const char * fn = input [ 1 ] == '<S2SV_blank>' ? input + 2 : cf -> desc -> name ; ut64 baddr = r_config_get_i ( core -> config , \"bin.baddr\" ) ; r_core_bin_load ( core , fn , baddr ) ; } break ; # define RBININFO ( n , x , y , z ) if ( is_array ) { if ( is_array == 1 ) { is_array ++ ; } else { r_cons_printf ( \",\" ) ; } r_cons_printf ( \"\\\\\"%s\\\\\":\" , n ) ; } if ( z ) { playMsg ( core , n , z ) ; } r_core_bin_info ( core , x , mode , va , NULL , y ) ; case 'A' : newline = false ; if ( input [ 1 ] == 'j' ) { r_cons_printf ( \"{\" ) ; r_bin_list_archs ( core -> bin , 'j' ) ; r_cons_printf ( \"}\\\\n\" ) ; } else { r_bin_list_archs ( core -> bin , 1 ) ; } break ; case 'E' : RBININFO ( \"exports\" , R_CORE_BIN_ACC_EXPORTS , NULL , 0 ) ; break ; case 'Z' : RBININFO ( \"size\" , R_CORE_BIN_ACC_SIZE , NULL , 0 ) ; break ; case 'S' : if ( ( input [ 1 ] == 'm' && input [ 2 ] == 'z' ) || ! input [ 1 ] ) { RBININFO ( \"sections\" , R_CORE_BIN_ACC_SECTIONS , NULL , 0 ) ; } else { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; if ( mode == R_CORE_BIN_RADARE || mode == R_CORE_BIN_JSON || mode == R_CORE_BIN_SIMPLE ) { RBININFO ( \"sections\" , R_CORE_BIN_ACC_SECTIONS , input + 2 , obj ? r_list_length ( obj -> sections ) : 0 ) ; } else { RBININFO ( \"sections\" , R_CORE_BIN_ACC_SECTIONS , input + 1 , obj ? r_list_length ( obj -> sections ) : 0 ) ; } while ( * ( ++ input ) ) ; input -- ; } break ; case 'H' : if ( input [ 1 ] == 'H' ) { RBININFO ( \"header\" , R_CORE_BIN_ACC_HEADER , NULL , - 1 ) ; break ; } case 'h' : RBININFO ( \"fields\" , R_CORE_BIN_ACC_FIELDS , NULL , 0 ) ; break ; <S2SV_StartBug> case 'l' : RBININFO ( \"libs\" , R_CORE_BIN_ACC_LIBS , NULL , obj ? r_list_length ( obj -> libs ) : 0 ) ; break ; <S2SV_EndBug> case 'L' : { char * ptr = strchr ( input , '<S2SV_blank>' ) ; int json = input [ 1 ] == 'j' ? 'j' : 0 ; if ( ptr && ptr [ 1 ] ) { const char * plugin_name = ptr + 1 ; if ( is_array ) { r_cons_printf ( \"\\\\\"plugin\\\\\":<S2SV_blank>\" ) ; } r_bin_list_plugin ( core -> bin , plugin_name , json ) ; } else { r_bin_list ( core -> bin , json ) ; } newline = false ; goto done ; } break ; case 's' : if ( input [ 1 ] == '.' ) { ut64 addr = core -> offset + ( core -> print -> cur_enabled ? core -> print -> cur : 0 ) ; RFlagItem * f = r_flag_get_at ( core -> flags , addr , false ) ; if ( f ) { if ( f -> offset == addr || ! f -> offset ) { r_cons_printf ( \"%s\" , f -> name ) ; } else { r_cons_printf ( \"%s+%d\" , f -> name , ( int ) ( addr - f -> offset ) ) ; } } input ++ ; break ; } else { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; RBININFO ( \"symbols\" , R_CORE_BIN_ACC_SYMBOLS , NULL , obj ? r_list_length ( obj -> symbols ) : 0 ) ; break ; } case 'R' : if ( input [ 1 ] == '*' ) { mode = R_CORE_BIN_RADARE ; } else if ( input [ 1 ] == 'j' ) { mode = R_CORE_BIN_JSON ; } RBININFO ( \"resources\" , R_CORE_BIN_ACC_RESOURCES , NULL , 0 ) ; break ; case 'r' : RBININFO ( \"relocs\" , R_CORE_BIN_ACC_RELOCS , NULL , 0 ) ; break ; case 'd' : RBININFO ( \"dwarf\" , R_CORE_BIN_ACC_DWARF , NULL , - 1 ) ; break ; <S2SV_StartBug> case 'i' : RBININFO ( \"imports\" , R_CORE_BIN_ACC_IMPORTS , NULL , obj ? r_list_length ( obj -> imports ) : 0 ) ; break ; <S2SV_EndBug> case 'I' : RBININFO ( \"info\" , R_CORE_BIN_ACC_INFO , NULL , 0 ) ; break ; case 'e' : RBININFO ( \"entries\" , R_CORE_BIN_ACC_ENTRIES , NULL , 0 ) ; break ; case 'M' : RBININFO ( \"main\" , R_CORE_BIN_ACC_MAIN , NULL , 0 ) ; break ; case 'm' : RBININFO ( \"memory\" , R_CORE_BIN_ACC_MEM , NULL , 0 ) ; break ; case 'V' : RBININFO ( \"versioninfo\" , R_CORE_BIN_ACC_VERSIONINFO , NULL , 0 ) ; break ; case 'C' : RBININFO ( \"signature\" , R_CORE_BIN_ACC_SIGNATURE , NULL , 0 ) ; break ; case 'z' : if ( input [ 1 ] == 'z' ) { switch ( input [ 2 ] ) { case '*' : mode = R_CORE_BIN_RADARE ; break ; case 'j' : mode = R_CORE_BIN_JSON ; break ; case 'q' : if ( input [ 3 ] == 'q' ) { mode = R_CORE_BIN_SIMPLEST ; input ++ ; } else { mode = R_CORE_BIN_SIMPLE ; } break ; default : mode = R_CORE_BIN_PRINT ; break ; } input ++ ; RBININFO ( \"strings\" , R_CORE_BIN_ACC_RAW_STRINGS , NULL , 0 ) ; } else { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; if ( input [ 1 ] == 'q' ) { mode = ( input [ 2 ] == 'q' ) ? R_CORE_BIN_SIMPLEST : R_CORE_BIN_SIMPLE ; input ++ ; } if ( obj ) { RBININFO ( \"strings\" , R_CORE_BIN_ACC_STRINGS , NULL , obj ? r_list_length ( obj -> strings ) : 0 ) ; } } break ; case 'c' : if ( input [ 1 ] == '?' ) { eprintf ( \"Usage:<S2SV_blank>ic[ljq*]<S2SV_blank>[class-index<S2SV_blank>or<S2SV_blank>name]\\\\n\" ) ; } else if ( input [ 1 ] == '<S2SV_blank>' || input [ 1 ] == 'q' || input [ 1 ] == 'j' || input [ 1 ] == 'l' ) { RBinClass * cls ; RBinSymbol * sym ; RListIter * iter , * iter2 ; RBinObject * obj = r_bin_cur_object ( core -> bin ) ; if ( obj ) { if ( input [ 2 ] ) { int idx = - 1 ; const char * cls_name = NULL ; if ( r_num_is_valid_input ( core -> num , input + 2 ) ) { idx = r_num_math ( core -> num , input + 2 ) ; } else { const char * first_char = input + ( ( input [ 1 ] == '<S2SV_blank>' ) ? 1 : 2 ) ; int not_space = strspn ( first_char , \"<S2SV_blank>\" ) ; if ( first_char [ not_space ] ) { cls_name = first_char + not_space ; } } int count = 0 ; r_list_foreach ( obj -> classes , iter , cls ) { if ( ( idx >= 0 && idx != count ++ ) || ( cls_name && strcmp ( cls_name , cls -> name ) != 0 ) ) { continue ; } switch ( input [ 1 ] ) { case '*' : r_list_foreach ( cls -> methods , iter2 , sym ) { r_cons_printf ( \"f<S2SV_blank>sym.%s<S2SV_blank>@<S2SV_blank>0x%\" PFMT64x \"\\\\n\" , sym -> name , sym -> vaddr ) ; } input ++ ; break ; case 'l' : r_list_foreach ( cls -> methods , iter2 , sym ) { const char * comma = iter2 -> p ? \"<S2SV_blank>\" : \"\" ; r_cons_printf ( \"%s0x%\" PFMT64d , comma , sym -> vaddr ) ; } r_cons_newline ( ) ; input ++ ; break ; case 'j' : input ++ ; r_cons_printf ( \"\\\\\"class\\\\\":\\\\\"%s\\\\\"\" , cls -> name ) ; r_cons_printf ( \",\\\\\"methods\\\\\":[\" ) ; r_list_foreach ( cls -> methods , iter2 , sym ) { const char * comma = iter2 -> p ? \",\" : \"\" ; if ( sym -> method_flags ) { char * flags = r_core_bin_method_flags_str ( sym , R_CORE_BIN_JSON ) ; r_cons_printf ( \"%s{\\\\\"name\\\\\":\\\\\"%s\\\\\",\\\\\"flags\\\\\":%s,\\\\\"vaddr\\\\\":%\" PFMT64d \"}\" , comma , sym -> name , flags , sym -> vaddr ) ; R_FREE ( flags ) ; } else { r_cons_printf ( \"%s{\\\\\"name\\\\\":\\\\\"%s\\\\\",\\\\\"vaddr\\\\\":%\" PFMT64d \"}\" , comma , sym -> name , sym -> vaddr ) ; } } r_cons_printf ( \"]\" ) ; break ; default : r_cons_printf ( \"class<S2SV_blank>%s\\\\n\" , cls -> name ) ; r_list_foreach ( cls -> methods , iter2 , sym ) { char * flags = r_core_bin_method_flags_str ( sym , 0 ) ; r_cons_printf ( \"0x%08\" PFMT64x \"<S2SV_blank>method<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , sym -> vaddr , cls -> name , flags , sym -> name ) ; R_FREE ( flags ) ; } break ; } goto done ; } goto done ; } else { playMsg ( core , \"classes\" , r_list_length ( obj -> classes ) ) ; if ( input [ 1 ] == 'l' && obj ) { r_list_foreach ( obj -> classes , iter , cls ) { r_list_foreach ( cls -> methods , iter2 , sym ) { const char * comma = iter2 -> p ? \"<S2SV_blank>\" : \"\" ; r_cons_printf ( \"%s0x%\" PFMT64d , comma , sym -> vaddr ) ; } if ( ! r_list_empty ( cls -> methods ) ) { r_cons_newline ( ) ; } } } else { RBININFO ( \"classes\" , R_CORE_BIN_ACC_CLASSES , NULL , r_list_length ( obj -> classes ) ) ; } } } } else { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; int len = obj ? r_list_length ( obj -> classes ) : 0 ; RBININFO ( \"classes\" , R_CORE_BIN_ACC_CLASSES , NULL , len ) ; } break ; case 'D' : if ( input [ 1 ] != '<S2SV_blank>' || ! demangle ( core , input + 2 ) ) { eprintf ( \"|Usage:<S2SV_blank>iD<S2SV_blank>lang<S2SV_blank>symbolname\\\\n\" ) ; } return 0 ; case 'a' : switch ( mode ) { case R_CORE_BIN_RADARE : cmd_info ( core , \"iIiecsSmz*\" ) ; break ; case R_CORE_BIN_JSON : cmd_info ( core , \"iIiecsSmzj\" ) ; break ; case R_CORE_BIN_SIMPLE : cmd_info ( core , \"iIiecsSmzq\" ) ; break ; default : cmd_info ( core , \"IiEecsSmz\" ) ; break ; } break ; case '?' : { const char * help_message [ ] = { \"Usage:<S2SV_blank>i\" , \"\" , \"Get<S2SV_blank>info<S2SV_blank>from<S2SV_blank>opened<S2SV_blank>file<S2SV_blank>(see<S2SV_blank>rabin2\\'s<S2SV_blank>manpage)\" , \"Output<S2SV_blank>mode:\" , \"\" , \"\" , \"\\'*\\'\" , \"\" , \"Output<S2SV_blank>in<S2SV_blank>radare<S2SV_blank>commands\" , \"\\'j\\'\" , \"\" , \"Output<S2SV_blank>in<S2SV_blank>json\" , \"\\'q\\'\" , \"\" , \"Simple<S2SV_blank>quiet<S2SV_blank>output\" , \"Actions:\" , \"\" , \"\" , \"i|ij\" , \"\" , \"Show<S2SV_blank>info<S2SV_blank>of<S2SV_blank>current<S2SV_blank>file<S2SV_blank>(in<S2SV_blank>JSON)\" , \"iA\" , \"\" , \"List<S2SV_blank>archs\" , \"ia\" , \"\" , \"Show<S2SV_blank>all<S2SV_blank>info<S2SV_blank>(imports,<S2SV_blank>exports,<S2SV_blank>sections..)\" , \"ib\" , \"\" , \"Reload<S2SV_blank>the<S2SV_blank>current<S2SV_blank>buffer<S2SV_blank>for<S2SV_blank>setting<S2SV_blank>of<S2SV_blank>the<S2SV_blank>bin<S2SV_blank>(use<S2SV_blank>once<S2SV_blank>only)\" , \"ic\" , \"\" , \"List<S2SV_blank>classes,<S2SV_blank>methods<S2SV_blank>and<S2SV_blank>fields\" , \"iC\" , \"\" , \"Show<S2SV_blank>signature<S2SV_blank>info<S2SV_blank>(entitlements,<S2SV_blank>...)\" , \"id\" , \"\" , \"Debug<S2SV_blank>information<S2SV_blank>(source<S2SV_blank>lines)\" , \"iD\" , \"<S2SV_blank>lang<S2SV_blank>sym\" , \"demangle<S2SV_blank>symbolname<S2SV_blank>for<S2SV_blank>given<S2SV_blank>language\" , \"ie\" , \"\" , \"Entrypoint\" , \"iE\" , \"\" , \"Exports<S2SV_blank>(global<S2SV_blank>symbols)\" , \"ih\" , \"\" , \"Headers<S2SV_blank>(alias<S2SV_blank>for<S2SV_blank>iH)\" , \"iHH\" , \"\" , \"Verbose<S2SV_blank>Headers<S2SV_blank>in<S2SV_blank>raw<S2SV_blank>text\" , \"ii\" , \"\" , \"Imports\" , \"iI\" , \"\" , \"Binary<S2SV_blank>info\" , \"ik\" , \"<S2SV_blank>[query]\" , \"Key-value<S2SV_blank>database<S2SV_blank>from<S2SV_blank>RBinObject\" , \"il\" , \"\" , \"Libraries\" , \"iL<S2SV_blank>\" , \"[plugin]\" , \"List<S2SV_blank>all<S2SV_blank>RBin<S2SV_blank>plugins<S2SV_blank>loaded<S2SV_blank>or<S2SV_blank>plugin<S2SV_blank>details\" , \"im\" , \"\" , \"Show<S2SV_blank>info<S2SV_blank>about<S2SV_blank>predefined<S2SV_blank>memory<S2SV_blank>allocation\" , \"iM\" , \"\" , \"Show<S2SV_blank>main<S2SV_blank>address\" , \"io\" , \"<S2SV_blank>[file]\" , \"Load<S2SV_blank>info<S2SV_blank>from<S2SV_blank>file<S2SV_blank>(or<S2SV_blank>last<S2SV_blank>opened)<S2SV_blank>use<S2SV_blank>bin.baddr\" , \"ir\" , \"\" , \"Relocs\" , \"iR\" , \"\" , \"Resources\" , \"is\" , \"\" , \"Symbols\" , \"iS<S2SV_blank>\" , \"[entropy,sha1]\" , \"Sections<S2SV_blank>(choose<S2SV_blank>which<S2SV_blank>hash<S2SV_blank>algorithm<S2SV_blank>to<S2SV_blank>use)\" , \"iV\" , \"\" , \"Display<S2SV_blank>file<S2SV_blank>version<S2SV_blank>info\" , \"iz|izj\" , \"\" , \"Strings<S2SV_blank>in<S2SV_blank>data<S2SV_blank>sections<S2SV_blank>(in<S2SV_blank>JSON/Base64)\" , \"izz\" , \"\" , \"Search<S2SV_blank>for<S2SV_blank>Strings<S2SV_blank>in<S2SV_blank>the<S2SV_blank>whole<S2SV_blank>binary\" , \"iZ\" , \"\" , \"Guess<S2SV_blank>size<S2SV_blank>of<S2SV_blank>binary<S2SV_blank>program\" , NULL } ; r_core_cmd_help ( core , help_message ) ; } goto done ; case '*' : mode = R_CORE_BIN_RADARE ; goto done ; case 'q' : mode = R_CORE_BIN_SIMPLE ; cmd_info_bin ( core , va , mode ) ; goto done ; case 'j' : mode = R_CORE_BIN_JSON ; if ( is_array > 1 ) { mode |= R_CORE_BIN_ARRAY ; } cmd_info_bin ( core , va , mode ) ; goto done ; default : cmd_info_bin ( core , va , mode ) ; break ; } input ++ ; if ( ( * input == 'j' || * input == 'q' ) && ! input [ 1 ] ) { break ; } } done : if ( is_array ) { r_cons_printf ( \"}\\\\n\" ) ; } if ( newline ) { r_cons_newline ( ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 'l' : { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; <S2SV_ModStart> 0 ) ; } <S2SV_ModStart> case 'i' : { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; <S2SV_ModStart> 0 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12997\n\n```\nCWE-835 static int lldp_private_8021_print ( netdissect_options * ndo , const u_char * tptr , u_int tlv_len ) { int subtype , hexdump = FALSE ; u_int sublen ; u_int tval ; <S2SV_StartBug> uint8_t i ; <S2SV_EndBug> if ( tlv_len < 4 ) { return hexdump ; } subtype = * ( tptr + 3 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Subtype<S2SV_blank>(%u)\" , tok2str ( lldp_8021_subtype_values , \"unknown\" , subtype ) , subtype ) ) ; switch ( subtype ) { case LLDP_PRIVATE_8021_SUBTYPE_PORT_VLAN_ID : if ( tlv_len < 6 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>port<S2SV_blank>vlan<S2SV_blank>id<S2SV_blank>(PVID):<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_VLAN_ID : if ( tlv_len < 7 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>port<S2SV_blank>and<S2SV_blank>protocol<S2SV_blank>vlan<S2SV_blank>id<S2SV_blank>(PPVID):<S2SV_blank>%u,<S2SV_blank>flags<S2SV_blank>[%s]<S2SV_blank>(0x%02x)\" , EXTRACT_16BITS ( tptr + 5 ) , bittok2str ( lldp_8021_port_protocol_id_values , \"none\" , * ( tptr + 4 ) ) , * ( tptr + 4 ) ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_VLAN_NAME : if ( tlv_len < 6 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>vlan<S2SV_blank>id<S2SV_blank>(VID):<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 4 ) ) ) ; if ( tlv_len < 7 ) { return hexdump ; } sublen = * ( tptr + 6 ) ; if ( tlv_len < 7 + sublen ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>vlan<S2SV_blank>name:<S2SV_blank>\" ) ) ; safeputs ( ndo , tptr + 7 , sublen ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_IDENTITY : if ( tlv_len < 5 ) { return hexdump ; } sublen = * ( tptr + 4 ) ; if ( tlv_len < 5 + sublen ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>protocol<S2SV_blank>identity:<S2SV_blank>\" ) ) ; safeputs ( ndo , tptr + 5 , sublen ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION_LENGTH ) { return hexdump ; } tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Pre-Priority<S2SV_blank>CNPV<S2SV_blank>Indicator\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority<S2SV_blank>:<S2SV_blank>0<S2SV_blank><S2SV_blank>1<S2SV_blank><S2SV_blank>2<S2SV_blank><S2SV_blank>3<S2SV_blank><S2SV_blank>4<S2SV_blank><S2SV_blank>5<S2SV_blank><S2SV_blank>6<S2SV_blank><S2SV_blank>7\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Value<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>\" ) ) ; for ( i = 0 ; i < NO_OF_BITS ; i ++ ) ND_PRINT ( ( ndo , \"%-2d<S2SV_blank>\" , ( tval >> i ) & 0x01 ) ) ; tval = * ( tptr + 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Pre-Priority<S2SV_blank>Ready<S2SV_blank>Indicator\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority<S2SV_blank>:<S2SV_blank>0<S2SV_blank><S2SV_blank>1<S2SV_blank><S2SV_blank>2<S2SV_blank><S2SV_blank>3<S2SV_blank><S2SV_blank>4<S2SV_blank><S2SV_blank>5<S2SV_blank><S2SV_blank>6<S2SV_blank><S2SV_blank>7\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Value<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>\" ) ) ; for ( i = 0 ; i < NO_OF_BITS ; i ++ ) ND_PRINT ( ( ndo , \"%-2d<S2SV_blank>\" , ( tval >> i ) & 0x01 ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION_LENGTH ) { return hexdump ; } tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Willing:%d,<S2SV_blank>CBS:%d,<S2SV_blank>RES:%d,<S2SV_blank>Max<S2SV_blank>TCs:%d\" , tval >> 7 , ( tval >> 6 ) & 0x02 , ( tval >> 3 ) & 0x07 , tval & 0x07 ) ) ; print_ets_priority_assignment_table ( ndo , tptr + 5 ) ; print_tc_bandwidth_table ( ndo , tptr + 9 ) ; print_tsa_assignment_table ( ndo , tptr + 17 ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION_LENGTH ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d\" , * ( tptr + 4 ) ) ) ; print_ets_priority_assignment_table ( ndo , tptr + 5 ) ; print_tc_bandwidth_table ( ndo , tptr + 9 ) ; print_tsa_assignment_table ( ndo , tptr + 17 ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION_LENGTH ) { return hexdump ; } tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Willing:<S2SV_blank>%d,<S2SV_blank>MBC:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>PFC<S2SV_blank>cap:%d<S2SV_blank>\" , tval >> 7 , ( tval >> 6 ) & 0x01 , ( tval >> 4 ) & 0x03 , ( tval & 0x0f ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>PFC<S2SV_blank>Enable\" ) ) ; tval = * ( tptr + 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority<S2SV_blank>:<S2SV_blank>0<S2SV_blank><S2SV_blank>1<S2SV_blank><S2SV_blank>2<S2SV_blank><S2SV_blank>3<S2SV_blank><S2SV_blank>4<S2SV_blank><S2SV_blank>5<S2SV_blank><S2SV_blank>6<S2SV_blank><S2SV_blank>7\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Value<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>\" ) ) ; for ( i = 0 ; i < NO_OF_BITS ; i ++ ) ND_PRINT ( ( ndo , \"%-2d<S2SV_blank>\" , ( tval >> i ) & 0x01 ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY_MIN_LENGTH ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d\" , * ( tptr + 4 ) ) ) ; if ( tlv_len <= LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY_MIN_LENGTH ) { return hexdump ; } sublen = tlv_len - 5 ; if ( sublen % 3 != 0 ) { return hexdump ; } i = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Application<S2SV_blank>Priority<S2SV_blank>Table\" ) ) ; while ( i < sublen ) { tval = * ( tptr + i + 5 ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>Sel:<S2SV_blank>%d\" , <S2SV_EndBug> <S2SV_StartBug> tval >> 5 , ( tval >> 3 ) & 0x03 , ( tval & 0x07 ) ) ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"Protocol<S2SV_blank>ID:<S2SV_blank>%d\" , EXTRACT_16BITS ( tptr + i + 5 ) ) ) ; i = i + 3 ; } break ; case LLDP_PRIVATE_8021_SUBTYPE_EVB : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_EVB_LENGTH ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>EVB<S2SV_blank>Bridge<S2SV_blank>Status\" ) ) ; tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>BGID:<S2SV_blank>%d,<S2SV_blank>RRCAP:<S2SV_blank>%d,<S2SV_blank>RRCTR:<S2SV_blank>%d\" , tval >> 3 , ( tval >> 2 ) & 0x01 , ( tval >> 1 ) & 0x01 , tval & 0x01 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>EVB<S2SV_blank>Station<S2SV_blank>Status\" ) ) ; tval = * ( tptr + 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>SGID:<S2SV_blank>%d,<S2SV_blank>RRREQ:<S2SV_blank>%d,RRSTAT:<S2SV_blank>%d\" , tval >> 4 , ( tval >> 3 ) & 0x01 , ( tval >> 2 ) & 0x01 , tval & 0x03 ) ) ; tval = * ( tptr + 6 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>R:<S2SV_blank>%d,<S2SV_blank>RTE:<S2SV_blank>%d,<S2SV_blank>\" , tval >> 5 , tval & 0x1f ) ) ; tval = * ( tptr + 7 ) ; ND_PRINT ( ( ndo , \"EVB<S2SV_blank>Mode:<S2SV_blank>%s<S2SV_blank>[%d]\" , tok2str ( lldp_evb_mode_values , \"unknown\" , tval >> 6 ) , tval >> 6 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ROL:<S2SV_blank>%d,<S2SV_blank>RWD:<S2SV_blank>%d,<S2SV_blank>\" , ( tval >> 5 ) & 0x01 , tval & 0x1f ) ) ; tval = * ( tptr + 8 ) ; ND_PRINT ( ( ndo , \"RES:<S2SV_blank>%d,<S2SV_blank>ROL:<S2SV_blank>%d,<S2SV_blank>RKA:<S2SV_blank>%d\" , tval >> 6 , ( tval >> 5 ) & 0x01 , tval & 0x1f ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_CDCP : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_CDCP_MIN_LENGTH ) { return hexdump ; } tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Role:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>Scomp:<S2SV_blank>%d<S2SV_blank>\" , tval >> 7 , ( tval >> 4 ) & 0x07 , ( tval >> 3 ) & 0x01 ) ) ; ND_PRINT ( ( ndo , \"ChnCap:<S2SV_blank>%d\" , EXTRACT_16BITS ( tptr + 6 ) & 0x0fff ) ) ; sublen = tlv_len - 8 ; if ( sublen % 3 != 0 ) { return hexdump ; } i = 0 ; while ( i < sublen ) { tval = EXTRACT_24BITS ( tptr + i + 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SCID:<S2SV_blank>%d,<S2SV_blank>SVID:<S2SV_blank>%d\" , tval >> 12 , tval & 0x000fff ) ) ; i = i + 3 ; } break ; default : hexdump = TRUE ; break ; } return hexdump ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_int tval ; u_int <S2SV_ModEnd> i ; if <S2SV_ModStart> ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>RES:<S2SV_blank>%u,<S2SV_blank>Sel:<S2SV_blank>%u,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%u\" <S2SV_ModEnd> , tval >> <S2SV_ModStart> & 0x07 ) , <S2SV_ModEnd> EXTRACT_16BITS ( tptr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3153\n\n```\nCWE-269 static int futex_wait_requeue_pi ( u32 __user * uaddr , unsigned int flags , u32 val , ktime_t * abs_time , u32 bitset , u32 __user * uaddr2 ) { struct hrtimer_sleeper timeout , * to = NULL ; struct rt_mutex_waiter rt_waiter ; struct rt_mutex * pi_mutex = NULL ; struct futex_hash_bucket * hb ; union futex_key key2 = FUTEX_KEY_INIT ; struct futex_q q = futex_q_init ; int res , ret ; if ( uaddr == uaddr2 ) return - EINVAL ; if ( ! bitset ) return - EINVAL ; if ( abs_time ) { to = & timeout ; hrtimer_init_on_stack ( & to -> timer , ( flags & FLAGS_CLOCKRT ) ? CLOCK_REALTIME : CLOCK_MONOTONIC , HRTIMER_MODE_ABS ) ; hrtimer_init_sleeper ( to , current ) ; hrtimer_set_expires_range_ns ( & to -> timer , * abs_time , current -> timer_slack_ns ) ; } debug_rt_mutex_init_waiter ( & rt_waiter ) ; RB_CLEAR_NODE ( & rt_waiter . pi_tree_entry ) ; RB_CLEAR_NODE ( & rt_waiter . tree_entry ) ; rt_waiter . task = NULL ; ret = get_futex_key ( uaddr2 , flags & FLAGS_SHARED , & key2 , VERIFY_WRITE ) ; if ( unlikely ( ret != 0 ) ) goto out ; q . bitset = bitset ; q . rt_waiter = & rt_waiter ; q . requeue_pi_key = & key2 ; ret = futex_wait_setup ( uaddr , val , flags , & q , & hb ) ; if ( ret ) goto out_key2 ; <S2SV_StartBug> futex_wait_queue_me ( hb , & q , to ) ; <S2SV_EndBug> spin_lock ( & hb -> lock ) ; ret = handle_early_requeue_pi_wakeup ( hb , & q , & key2 , to ) ; spin_unlock ( & hb -> lock ) ; if ( ret ) goto out_put_keys ; if ( ! q . rt_waiter ) { if ( q . pi_state && ( q . pi_state -> owner != current ) ) { spin_lock ( q . lock_ptr ) ; ret = fixup_pi_state_owner ( uaddr2 , & q , current ) ; spin_unlock ( q . lock_ptr ) ; } } else { WARN_ON ( ! q . pi_state ) ; pi_mutex = & q . pi_state -> pi_mutex ; ret = rt_mutex_finish_proxy_lock ( pi_mutex , to , & rt_waiter , 1 ) ; debug_rt_mutex_free_waiter ( & rt_waiter ) ; spin_lock ( q . lock_ptr ) ; res = fixup_owner ( uaddr2 , & q , ! ret ) ; if ( res ) ret = ( res < 0 ) ? res : 0 ; unqueue_me_pi ( & q ) ; } if ( ret == - EFAULT ) { if ( pi_mutex && rt_mutex_owner ( pi_mutex ) == current ) rt_mutex_unlock ( pi_mutex ) ; } else if ( ret == - EINTR ) { ret = - EWOULDBLOCK ; } out_put_keys : put_futex_key ( & q . key ) ; out_key2 : put_futex_key ( & key2 ) ; out : if ( to ) { hrtimer_cancel ( & to -> timer ) ; destroy_hrtimer_on_stack ( & to -> timer ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out_key2 ; if ( match_futex ( & q . key , & key2 ) ) { ret = - EINVAL ; goto out_put_keys ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static int mark_source_chains ( const struct xt_table_info * newinfo , unsigned int valid_hooks , void * entry0 ) { unsigned int hook ; for ( hook = 0 ; hook < NF_INET_NUMHOOKS ; hook ++ ) { unsigned int pos = newinfo -> hook_entry [ hook ] ; struct ipt_entry * e = ( struct ipt_entry * ) ( entry0 + pos ) ; if ( ! ( valid_hooks & ( 1 << hook ) ) ) continue ; e -> counters . pcnt = pos ; for ( ; ; ) { const struct xt_standard_target * t = ( void * ) ipt_get_target_c ( e ) ; int visited = e -> comefrom & ( 1 << hook ) ; if ( e -> comefrom & ( 1 << NF_INET_NUMHOOKS ) ) { pr_err ( \"iptables:<S2SV_blank>loop<S2SV_blank>hook<S2SV_blank>%u<S2SV_blank>pos<S2SV_blank>%u<S2SV_blank>%08X.\\\\n\" , hook , pos , e -> comefrom ) ; return 0 ; } e -> comefrom |= ( ( 1 << hook ) | ( 1 << NF_INET_NUMHOOKS ) ) ; <S2SV_StartBug> if ( ( e -> target_offset == sizeof ( struct ipt_entry ) && <S2SV_EndBug> ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 ) && <S2SV_StartBug> t -> verdict < 0 && unconditional ( & e -> ip ) ) || <S2SV_EndBug> visited ) { unsigned int oldpos , size ; if ( ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 ) && t -> verdict < - NF_MAX_VERDICT - 1 ) { duprintf ( \"mark_source_chains:<S2SV_blank>bad<S2SV_blank>\" \"negative<S2SV_blank>verdict<S2SV_blank>(%i)\\\\n\" , t -> verdict ) ; return 0 ; } do { e -> comefrom ^= ( 1 << NF_INET_NUMHOOKS ) ; # ifdef DEBUG_IP_FIREWALL_USER if ( e -> comefrom & ( 1 << NF_INET_NUMHOOKS ) ) { duprintf ( \"Back<S2SV_blank>unset<S2SV_blank>\" \"on<S2SV_blank>hook<S2SV_blank>%u<S2SV_blank>\" \"rule<S2SV_blank>%u\\\\n\" , hook , pos ) ; } # endif oldpos = pos ; pos = e -> counters . pcnt ; e -> counters . pcnt = 0 ; if ( pos == oldpos ) goto next ; e = ( struct ipt_entry * ) ( entry0 + pos ) ; } while ( oldpos == pos + e -> next_offset ) ; size = e -> next_offset ; e = ( struct ipt_entry * ) ( entry0 + pos + size ) ; e -> counters . pcnt = pos ; pos += size ; } else { int newpos = t -> verdict ; if ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 && newpos >= 0 ) { if ( newpos > newinfo -> size - sizeof ( struct ipt_entry ) ) { duprintf ( \"mark_source_chains:<S2SV_blank>\" \"bad<S2SV_blank>verdict<S2SV_blank>(%i)\\\\n\" , newpos ) ; return 0 ; } duprintf ( \"Jump<S2SV_blank>rule<S2SV_blank>%u<S2SV_blank>-><S2SV_blank>%u\\\\n\" , pos , newpos ) ; } else { newpos = pos + e -> next_offset ; } e = ( struct ipt_entry * ) ( entry0 + newpos ) ; e -> counters . pcnt = pos ; pos = newpos ; } } next : duprintf ( \"Finished<S2SV_blank>chain<S2SV_blank>%u\\\\n\" , hook ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( unconditional ( e <S2SV_ModEnd> ) && ( <S2SV_ModStart> verdict < 0 <S2SV_ModEnd> ) || visited\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 void ip_send_reply ( struct sock * sk , struct sk_buff * skb , struct ip_reply_arg * arg , unsigned int len ) { struct inet_sock * inet = inet_sk ( sk ) ; <S2SV_StartBug> struct { <S2SV_EndBug> struct ip_options opt ; char data [ 40 ] ; } replyopts ; struct ipcm_cookie ipc ; __be32 daddr ; struct rtable * rt = skb_rtable ( skb ) ; <S2SV_StartBug> if ( ip_options_echo ( & replyopts . opt , skb ) ) <S2SV_EndBug> return ; daddr = ipc . addr = rt -> rt_src ; ipc . opt = NULL ; ipc . tx_flags = 0 ; <S2SV_StartBug> if ( replyopts . opt . optlen ) { <S2SV_EndBug> ipc . opt = & replyopts . opt ; <S2SV_StartBug> if ( ipc . opt -> srr ) <S2SV_EndBug> <S2SV_StartBug> daddr = replyopts . opt . faddr ; <S2SV_EndBug> } { struct flowi4 fl4 ; flowi4_init_output ( & fl4 , arg -> bound_dev_if , 0 , RT_TOS ( ip_hdr ( skb ) -> tos ) , RT_SCOPE_UNIVERSE , sk -> sk_protocol , ip_reply_arg_flowi_flags ( arg ) , daddr , rt -> rt_spec_dst , tcp_hdr ( skb ) -> source , tcp_hdr ( skb ) -> dest ) ; security_skb_classify_flow ( skb , flowi4_to_flowi ( & fl4 ) ) ; rt = ip_route_output_key ( sock_net ( sk ) , & fl4 ) ; if ( IS_ERR ( rt ) ) return ; } bh_lock_sock ( sk ) ; inet -> tos = ip_hdr ( skb ) -> tos ; sk -> sk_priority = skb -> priority ; sk -> sk_protocol = ip_hdr ( skb ) -> protocol ; sk -> sk_bound_dev_if = arg -> bound_dev_if ; ip_append_data ( sk , ip_reply_glue_bits , arg -> iov -> iov_base , len , 0 , & ipc , & rt , MSG_DONTWAIT ) ; if ( ( skb = skb_peek ( & sk -> sk_write_queue ) ) != NULL ) { if ( arg -> csumoffset >= 0 ) * ( ( __sum16 * ) skb_transport_header ( skb ) + arg -> csumoffset ) = csum_fold ( csum_add ( skb -> csum , arg -> csum ) ) ; skb -> ip_summed = CHECKSUM_NONE ; ip_push_pending_frames ( sk ) ; } bh_unlock_sock ( sk ) ; ip_rt_put ( rt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct ip_options_data <S2SV_ModEnd> replyopts ; struct <S2SV_ModStart> replyopts . opt . opt <S2SV_ModStart> . opt . opt . <S2SV_ModStart> ; if ( replyopts . opt . opt . <S2SV_ModEnd> srr ) daddr <S2SV_ModStart> daddr = replyopts . opt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 static int lockd ( void * vrqstp ) { int err = 0 ; <S2SV_StartBug> struct svc_rqst * rqstp = vrqstp ; <S2SV_EndBug> set_freezable ( ) ; allow_signal ( SIGKILL ) ; dprintk ( \"NFS<S2SV_blank>locking<S2SV_blank>service<S2SV_blank>started<S2SV_blank>(ver<S2SV_blank>\" LOCKD_VERSION \").\\\\n\" ) ; while ( ! kthread_should_stop ( ) ) { long timeout = MAX_SCHEDULE_TIMEOUT ; RPC_IFDEBUG ( char buf [ RPC_MAX_ADDRBUFLEN ] ) ; rqstp -> rq_server -> sv_maxconn = nlm_max_connections ; if ( signalled ( ) ) { flush_signals ( current ) ; restart_grace ( ) ; continue ; } timeout = nlmsvc_retry_blocked ( ) ; err = svc_recv ( rqstp , timeout ) ; if ( err == - EAGAIN || err == - EINTR ) continue ; dprintk ( \"lockd:<S2SV_blank>request<S2SV_blank>from<S2SV_blank>%s\\\\n\" , svc_print_addr ( rqstp , buf , sizeof ( buf ) ) ) ; svc_process ( rqstp ) ; } flush_signals ( current ) ; if ( nlmsvc_ops ) nlmsvc_invalidate_all ( ) ; nlm_shutdown_hosts ( ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rqstp = vrqstp ; struct net * net = & init_net ; struct lockd_net * ln = net_generic ( net , lockd_net_id ) <S2SV_ModStart> ( ) ; cancel_delayed_work_sync ( & ln -> grace_period_end ) ; locks_end_grace ( & ln -> lockd_manager ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13039\n\n```\nCWE-125 static const u_char * ikev1_n_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , const u_char * ep , uint32_t phase _U_ , uint32_t doi0 _U_ , uint32_t proto0 _U_ , int depth _U_ ) { const struct ikev1_pl_n * p ; struct ikev1_pl_n n ; const u_char * cp ; const u_char * ep2 ; uint32_t doi ; uint32_t proto ; static const char * notify_error_str [ ] = { NULL , \"INVALID-PAYLOAD-TYPE\" , \"DOI-NOT-SUPPORTED\" , \"SITUATION-NOT-SUPPORTED\" , \"INVALID-COOKIE\" , \"INVALID-MAJOR-VERSION\" , \"INVALID-MINOR-VERSION\" , \"INVALID-EXCHANGE-TYPE\" , \"INVALID-FLAGS\" , \"INVALID-MESSAGE-ID\" , \"INVALID-PROTOCOL-ID\" , \"INVALID-SPI\" , \"INVALID-TRANSFORM-ID\" , \"ATTRIBUTES-NOT-SUPPORTED\" , \"NO-PROPOSAL-CHOSEN\" , \"BAD-PROPOSAL-SYNTAX\" , \"PAYLOAD-MALFORMED\" , \"INVALID-KEY-INFORMATION\" , \"INVALID-ID-INFORMATION\" , \"INVALID-CERT-ENCODING\" , \"INVALID-CERTIFICATE\" , \"CERT-TYPE-UNSUPPORTED\" , \"INVALID-CERT-AUTHORITY\" , \"INVALID-HASH-INFORMATION\" , \"AUTHENTICATION-FAILED\" , \"INVALID-SIGNATURE\" , \"ADDRESS-NOTIFICATION\" , \"NOTIFY-SA-LIFETIME\" , \"CERTIFICATE-UNAVAILABLE\" , \"UNSUPPORTED-EXCHANGE-TYPE\" , \"UNEQUAL-PAYLOAD-LENGTHS\" , } ; static const char * ipsec_notify_error_str [ ] = { \"RESERVED\" , } ; static const char * notify_status_str [ ] = { \"CONNECTED\" , } ; static const char * ipsec_notify_status_str [ ] = { \"RESPONDER-LIFETIME\" , \"REPLAY-STATUS\" , \"INITIAL-CONTACT\" , } ; # define NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( x ) , notify_error_str ) # define IPSEC_NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 8192 ) , ipsec_notify_error_str ) # define NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 16384 ) , notify_status_str ) # define IPSEC_NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 24576 ) , ipsec_notify_status_str ) ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; p = ( const struct ikev1_pl_n * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & n , ext , sizeof ( n ) ) ; doi = ntohl ( n . doi ) ; proto = n . prot_id ; if ( doi != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>doi=%d\" , doi ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%d\" , proto ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } return ( const u_char * ) ( p + 1 ) + n . spi_size ; } ND_PRINT ( ( ndo , \"<S2SV_blank>doi=ipsec\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%s\" , PROTOIDSTR ( proto ) ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 32768 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } cp = ( const u_char * ) ( p + 1 ) + n . spi_size ; ep2 = ( const u_char * ) p + item_len ; if ( cp < ep ) { switch ( ntohs ( n . type ) ) { case IPSECDOI_NTYPE_RESPONDER_LIFETIME : { const struct attrmap * map = oakley_t_map ; size_t nmap = sizeof ( oakley_t_map ) / sizeof ( oakley_t_map [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>attrs=(\" ) ) ; while ( cp < ep && cp < ep2 ) { cp = ikev1_attrmap_print ( ndo , cp , <S2SV_StartBug> ( ep < ep2 ) ? ep : ep2 , map , nmap ) ; <S2SV_EndBug> } ND_PRINT ( ( ndo , \")\" ) ) ; break ; } case IPSECDOI_NTYPE_REPLAY_STATUS : ND_PRINT ( ( ndo , \"<S2SV_blank>status=(\" ) ) ; ND_PRINT ( ( ndo , \"replay<S2SV_blank>detection<S2SV_blank>%sabled\" , EXTRACT_32BITS ( cp ) ? \"en\" : \"dis\" ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; default : if ( ndo -> ndo_vflag > 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>data=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( cp ) , ep - cp ) ) goto trunc ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { if ( ! ike_show_somedata ( ndo , cp , ep ) ) goto trunc ; } break ; } } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , cp , ep2 <S2SV_ModEnd> , map , <S2SV_ModStart> nmap ) ; if ( cp == NULL ) { ND_PRINT ( ( ndo , \")\" ) ) ; goto trunc ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9438\n\n```\nCWE-674 static void yydestruct ( const char * yymsg , int yytype , YYSTYPE * yyvaluep , void * yyscanner , HEX_LEX_ENVIRONMENT * lex_env ) { YYUSE ( yyvaluep ) ; YYUSE ( yyscanner ) ; YYUSE ( lex_env ) ; if ( ! yymsg ) yymsg = \"Deleting\" ; YY_SYMBOL_PRINT ( yymsg , yytype , yyvaluep , yylocationp ) ; YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN switch ( yytype ) { case 16 : <S2SV_StartBug> # line 94 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1023 \"hex_grammar.c\" break ; case 17 : <S2SV_StartBug> # line 95 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1029 \"hex_grammar.c\" break ; case 18 : <S2SV_StartBug> # line 96 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1035 \"hex_grammar.c\" break ; case 19 : <S2SV_StartBug> # line 97 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1041 \"hex_grammar.c\" break ; case 21 : <S2SV_StartBug> # line 100 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1047 \"hex_grammar.c\" break ; case 22 : <S2SV_StartBug> # line 99 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1053 \"hex_grammar.c\" break ; case 23 : <S2SV_StartBug> # line 98 \"hex_grammar.y\" <S2SV_EndBug> { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1059 \"hex_grammar.c\" break ; default : break ; } YY_IGNORE_MAYBE_UNINITIALIZED_END }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : # line 101 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1030 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 102 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1036 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 103 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1042 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 104 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1048 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 107 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1054 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 106 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1060 <S2SV_ModEnd> \"hex_grammar.c\" break ; <S2SV_ModStart> : # line 105 \"hex_grammar.y\" { yr_re_node_destroy ( ( ( * yyvaluep ) . re_node ) ) ; } # line 1066 <S2SV_ModEnd> \"hex_grammar.c\" break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4805\n\n```\nCWE-416 int ppp_register_net_channel ( struct net * net , struct ppp_channel * chan ) { struct channel * pch ; struct ppp_net * pn ; pch = kzalloc ( sizeof ( struct channel ) , GFP_KERNEL ) ; if ( ! pch ) return - ENOMEM ; pn = ppp_pernet ( net ) ; pch -> ppp = NULL ; pch -> chan = chan ; <S2SV_StartBug> pch -> chan_net = net ; <S2SV_EndBug> chan -> ppp = pch ; init_ppp_file ( & pch -> file , CHANNEL ) ; pch -> file . hdrlen = chan -> hdrlen ; # ifdef CONFIG_PPP_MULTILINK pch -> lastseq = - 1 ; # endif init_rwsem ( & pch -> chan_sem ) ; spin_lock_init ( & pch -> downl ) ; rwlock_init ( & pch -> upl ) ; spin_lock_bh ( & pn -> all_channels_lock ) ; pch -> file . index = ++ pn -> last_channel_index ; list_add ( & pch -> list , & pn -> new_channels ) ; atomic_inc ( & channel_count ) ; spin_unlock_bh ( & pn -> all_channels_lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> chan_net = get_net ( net ) <S2SV_ModEnd> ; chan ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-120 static Image * ReadLABELImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char geometry [ MagickPathExtent ] , * property ; const char * label ; DrawInfo * draw_info ; Image * image ; MagickBooleanType status ; TypeMetric metrics ; size_t height , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; ( void ) ResetImagePage ( image , \"0x0+0+0\" ) ; property = InterpretImageProperties ( ( ImageInfo * ) image_info , image , image_info -> filename , exception ) ; ( void ) SetImageProperty ( image , \"label\" , property , exception ) ; property = DestroyString ( property ) ; label = GetImageProperty ( image , \"label\" , exception ) ; draw_info = CloneDrawInfo ( image_info , ( DrawInfo * ) NULL ) ; draw_info -> text = ConstantString ( label ) ; metrics . width = 0 ; metrics . ascent = 0.0 ; status = GetMultilineTypeMetrics ( image , draw_info , & metrics , exception ) ; if ( ( image -> columns == 0 ) && ( image -> rows == 0 ) ) { <S2SV_StartBug> image -> columns = ( size_t ) ( metrics . width + draw_info -> stroke_width + 0.5 ) ; <S2SV_EndBug> image -> rows = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; } else if ( ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) || ( fabs ( image_info -> pointsize ) < MagickEpsilon ) ) { double high , low ; for ( ; ; draw_info -> pointsize *= 2.0 ) { ( void ) FormatLocaleString ( geometry , MagickPathExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; status = GetMultilineTypeMetrics ( image , draw_info , & metrics , exception ) ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; height = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; if ( ( image -> columns != 0 ) && ( image -> rows != 0 ) ) { if ( ( width >= image -> columns ) && ( height >= image -> rows ) ) break ; } else if ( ( ( image -> columns != 0 ) && ( width >= image -> columns ) ) || ( ( image -> rows != 0 ) && ( height >= image -> rows ) ) ) break ; } high = draw_info -> pointsize ; for ( low = 1.0 ; ( high - low ) > 0.5 ; ) { draw_info -> pointsize = ( low + high ) / 2.0 ; ( void ) FormatLocaleString ( geometry , MagickPathExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; status = GetMultilineTypeMetrics ( image , draw_info , & metrics , exception ) ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; height = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; if ( ( image -> columns != 0 ) && ( image -> rows != 0 ) ) { if ( ( width < image -> columns ) && ( height < image -> rows ) ) low = draw_info -> pointsize + 0.5 ; else high = draw_info -> pointsize - 0.5 ; } else if ( ( ( image -> columns != 0 ) && ( width < image -> columns ) ) || ( ( image -> rows != 0 ) && ( height < image -> rows ) ) ) low = draw_info -> pointsize + 0.5 ; else high = draw_info -> pointsize - 0.5 ; } draw_info -> pointsize = ( low + high ) / 2.0 - 0.5 ; } status = GetMultilineTypeMetrics ( image , draw_info , & metrics , exception ) ; if ( status == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( image -> columns == 0 ) <S2SV_StartBug> image -> columns = ( size_t ) ( metrics . width + draw_info -> stroke_width + 0.5 ) ; <S2SV_EndBug> if ( image -> columns == 0 ) <S2SV_StartBug> image -> columns = ( size_t ) ( draw_info -> pointsize + draw_info -> stroke_width + 0.5 ) ; <S2SV_EndBug> if ( image -> rows == 0 ) <S2SV_StartBug> image -> rows = ( size_t ) ( metrics . ascent - metrics . descent + <S2SV_EndBug> draw_info -> stroke_width + 0.5 ) ; if ( image -> rows == 0 ) <S2SV_StartBug> image -> rows = ( size_t ) ( draw_info -> pointsize + draw_info -> stroke_width + 0.5 ) ; <S2SV_EndBug> status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; return ( DestroyImageList ( image ) ) ; } if ( SetImageBackgroundColor ( image , exception ) == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) FormatLocaleString ( geometry , MagickPathExtent , \"%+g%+g\" , draw_info -> direction == RightToLeftDirection ? image -> columns - metrics . bounds . x2 : 0.0 , draw_info -> gravity == UndefinedGravity ? metrics . ascent : 0.0 ) ; draw_info -> geometry = AcquireString ( geometry ) ; status = AnnotateImage ( image , draw_info , exception ) ; if ( image_info -> pointsize == 0.0 ) { char pointsize [ MagickPathExtent ] ; ( void ) FormatLocaleString ( pointsize , MagickPathExtent , \"%.20g\" , draw_info -> pointsize ) ; ( void ) SetImageProperty ( image , \"label:pointsize\" , pointsize , exception ) ; } draw_info = DestroyDrawInfo ( draw_info ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( size_t ) floor <S2SV_ModStart> ( size_t ) floor <S2SV_ModStart> ( size_t ) floor <S2SV_ModStart> ( size_t ) floor <S2SV_ModStart> ( size_t ) floor\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31260\n\n```\nCWE-476 GF_Err MergeTrack ( GF_TrackBox * trak , GF_TrackFragmentBox * traf , GF_MovieFragmentBox * moof_box , u64 moof_offset , s32 compressed_diff , u64 * cumulated_offset , Bool is_first_merge ) { u32 i , j , chunk_size , track_num ; u64 base_offset , data_offset , traf_duration ; u32 def_duration , DescIndex , def_size , def_flags ; u32 duration , size , flags , prev_trun_data_offset , sample_index ; u8 pad , sync ; u16 degr ; Bool first_samp_in_traf = GF_TRUE ; Bool store_traf_map = GF_FALSE ; u8 * moof_template = NULL ; u32 moof_template_size = 0 ; Bool is_seg_start = GF_FALSE ; u64 seg_start = 0 , sidx_start = 0 , sidx_end = 0 , frag_start = 0 , last_dts = 0 ; GF_TrackFragmentRunBox * trun ; GF_TrunEntry * ent ; # ifdef GF_ENABLE_CTRN GF_TrackFragmentBox * traf_ref = NULL ; # endif GF_Err stbl_AppendTime ( GF_SampleTableBox * stbl , u32 duration , u32 nb_pack ) ; GF_Err stbl_AppendSize ( GF_SampleTableBox * stbl , u32 size , u32 nb_pack ) ; GF_Err stbl_AppendChunk ( GF_SampleTableBox * stbl , u64 offset ) ; GF_Err stbl_AppendSampleToChunk ( GF_SampleTableBox * stbl , u32 DescIndex , u32 samplesInChunk ) ; GF_Err stbl_AppendCTSOffset ( GF_SampleTableBox * stbl , s32 CTSOffset ) ; GF_Err stbl_AppendRAP ( GF_SampleTableBox * stbl , u8 isRap ) ; GF_Err stbl_AppendPadding ( GF_SampleTableBox * stbl , u8 padding ) ; GF_Err stbl_AppendDegradation ( GF_SampleTableBox * stbl , u16 DegradationPriority ) ; if ( trak -> Header -> trackID != traf -> tfhd -> trackID ) return GF_OK ; if ( ! trak -> Media -> information -> sampleTable || ! trak -> Media -> information -> sampleTable -> SampleSize || ! trak -> Media -> information -> sampleTable -> TimeToSample || ! trak -> Media -> information -> sampleTable -> SampleToChunk || ! trak -> Media -> information -> sampleTable -> ChunkOffset ) { return GF_ISOM_INVALID_FILE ; } if ( ! traf -> trex -> track ) traf -> trex -> track = trak ; DescIndex = ( traf -> tfhd -> flags & GF_ISOM_TRAF_SAMPLE_DESC ) ? traf -> tfhd -> sample_desc_index : traf -> trex -> def_sample_desc_index ; if ( ! DescIndex ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>default<S2SV_blank>sample<S2SV_blank>description<S2SV_blank>set<S2SV_blank>to<S2SV_blank>0,<S2SV_blank>likely<S2SV_blank>broken<S2SV_blank>!<S2SV_blank>Fixing<S2SV_blank>to<S2SV_blank>1\\\\n\" ) ) ; DescIndex = 1 ; } else if ( DescIndex > gf_list_count ( trak -> Media -> information -> sampleTable -> SampleDescription -> child_boxes ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>default<S2SV_blank>sample<S2SV_blank>description<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%d<S2SV_blank>but<S2SV_blank>only<S2SV_blank>%d<S2SV_blank>sample<S2SV_blank>description(s),<S2SV_blank>likely<S2SV_blank>broken<S2SV_blank>!<S2SV_blank>Fixing<S2SV_blank>to<S2SV_blank>1\\\\n\" , DescIndex , gf_list_count ( trak -> Media -> information -> sampleTable -> SampleDescription -> child_boxes ) ) ) ; DescIndex = 1 ; } # ifdef GF_ENABLE_CTRN if ( traf -> trex -> inherit_from_traf_id ) { u32 traf_count = gf_list_count ( moof_box -> TrackList ) ; for ( i = 0 ; i < traf_count ; i ++ ) { GF_TrackFragmentBox * atraf = gf_list_get ( moof_box -> TrackList , i ) ; if ( atraf -> tfhd && atraf -> tfhd -> trackID == traf -> trex -> inherit_from_traf_id ) { traf_ref = atraf ; break ; } } } # endif def_duration = ( traf -> tfhd -> flags & GF_ISOM_TRAF_SAMPLE_DUR ) ? traf -> tfhd -> def_sample_duration : traf -> trex -> def_sample_duration ; def_size = ( traf -> tfhd -> flags & GF_ISOM_TRAF_SAMPLE_SIZE ) ? traf -> tfhd -> def_sample_size : traf -> trex -> def_sample_size ; def_flags = ( traf -> tfhd -> flags & GF_ISOM_TRAF_SAMPLE_FLAGS ) ? traf -> tfhd -> def_sample_flags : traf -> trex -> def_sample_flags ; base_offset = moof_offset ; if ( traf -> tfhd -> flags & GF_ISOM_TRAF_BASE_OFFSET ) base_offset = traf -> tfhd -> base_data_offset ; else if ( ! ( traf -> tfhd -> flags & GF_ISOM_MOOF_BASE_OFFSET ) ) base_offset = * cumulated_offset ; chunk_size = 0 ; prev_trun_data_offset = 0 ; data_offset = 0 ; traf_duration = 0 ; if ( traf -> tfdt && is_first_merge ) { # ifndef GPAC_DISABLE_LOG if ( trak -> moov -> mov -> NextMoofNumber && trak -> present_in_scalable_segment && trak -> sample_count_at_seg_start && ( trak -> dts_at_seg_start != traf -> tfdt -> baseMediaDecodeTime ) ) { s32 drift = ( s32 ) ( ( s64 ) traf -> tfdt -> baseMediaDecodeTime - ( s64 ) trak -> dts_at_seg_start ) ; if ( drift < 0 ) { GF_LOG ( GF_LOG_WARNING , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>Warning:<S2SV_blank>TFDT<S2SV_blank>timing<S2SV_blank>\" LLD \"<S2SV_blank>less<S2SV_blank>than<S2SV_blank>cumulated<S2SV_blank>timing<S2SV_blank>\" LLD \"<S2SV_blank>-<S2SV_blank>using<S2SV_blank>tfdt\\\\n\" , traf -> tfdt -> baseMediaDecodeTime , trak -> dts_at_seg_start ) ) ; } else { GF_LOG ( GF_LOG_INFO , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>TFDT<S2SV_blank>timing<S2SV_blank>\" LLD \"<S2SV_blank>higher<S2SV_blank>than<S2SV_blank>cumulated<S2SV_blank>timing<S2SV_blank>\" LLD \"<S2SV_blank>(last<S2SV_blank>sample<S2SV_blank>got<S2SV_blank>extended<S2SV_blank>in<S2SV_blank>duration)\\\\n\" , traf -> tfdt -> baseMediaDecodeTime , trak -> dts_at_seg_start ) ) ; } } # endif trak -> dts_at_seg_start = traf -> tfdt -> baseMediaDecodeTime ; } else if ( traf -> tfxd ) { trak -> dts_at_seg_start = traf -> tfxd -> absolute_time_in_track_timescale ; } if ( traf -> tfxd ) { trak -> last_tfxd_value = traf -> tfxd -> absolute_time_in_track_timescale ; trak -> last_tfxd_value += traf -> tfxd -> fragment_duration_in_track_timescale ; } if ( traf -> tfrf ) { if ( trak -> tfrf ) gf_isom_box_del_parent ( & trak -> child_boxes , ( GF_Box * ) trak -> tfrf ) ; trak -> tfrf = traf -> tfrf ; gf_list_del_item ( traf -> child_boxes , traf -> tfrf ) ; gf_list_add ( trak -> child_boxes , trak -> tfrf ) ; } if ( trak -> moov -> mov -> signal_frag_bounds ) { store_traf_map = GF_TRUE ; if ( is_first_merge ) { GF_MovieFragmentBox * moof_clone = NULL ; gf_isom_box_freeze_order ( ( GF_Box * ) moof_box ) ; gf_isom_clone_box ( ( GF_Box * ) moof_box , ( GF_Box * * ) & moof_clone ) ; if ( moof_clone ) { GF_BitStream * bs ; for ( i = 0 ; i < gf_list_count ( moof_clone -> TrackList ) ; i ++ ) { GF_TrackFragmentBox * traf_clone = gf_list_get ( moof_clone -> TrackList , i ) ; gf_isom_box_array_reset_parent ( & traf_clone -> child_boxes , traf_clone -> TrackRuns ) ; gf_isom_box_array_reset_parent ( & traf_clone -> child_boxes , traf_clone -> sampleGroups ) ; gf_isom_box_array_reset_parent ( & traf_clone -> child_boxes , traf_clone -> sampleGroupsDescription ) ; gf_isom_box_array_reset_parent ( & traf_clone -> child_boxes , traf_clone -> sub_samples ) ; gf_isom_box_array_reset_parent ( & traf_clone -> child_boxes , traf_clone -> sai_offsets ) ; gf_isom_box_array_reset_parent ( & traf_clone -> child_boxes , traf_clone -> sai_sizes ) ; if ( traf_clone -> sample_encryption ) { gf_isom_box_del_parent ( & traf_clone -> child_boxes , ( GF_Box * ) traf_clone -> sample_encryption ) ; traf_clone -> sample_encryption = NULL ; } if ( traf_clone -> sdtp ) { gf_isom_box_del_parent ( & traf_clone -> child_boxes , ( GF_Box * ) traf_clone -> sdtp ) ; traf_clone -> sdtp = NULL ; } } gf_isom_box_size ( ( GF_Box * ) moof_clone ) ; bs = gf_bs_new ( NULL , 0 , GF_BITSTREAM_WRITE ) ; if ( trak -> moov -> mov -> seg_styp ) { gf_isom_box_size ( trak -> moov -> mov -> seg_styp ) ; gf_isom_box_write ( trak -> moov -> mov -> seg_styp , bs ) ; } if ( trak -> moov -> mov -> root_sidx ) { gf_isom_box_size ( ( GF_Box * ) trak -> moov -> mov -> root_sidx ) ; gf_isom_box_write ( ( GF_Box * ) trak -> moov -> mov -> root_sidx , bs ) ; } if ( trak -> moov -> mov -> seg_ssix ) { gf_isom_box_size ( trak -> moov -> mov -> seg_ssix ) ; gf_isom_box_write ( trak -> moov -> mov -> seg_ssix , bs ) ; } gf_isom_box_write ( ( GF_Box * ) moof_clone , bs ) ; gf_isom_box_del ( ( GF_Box * ) moof_clone ) ; gf_bs_get_content ( bs , & moof_template , & moof_template_size ) ; gf_bs_del ( bs ) ; } } if ( trak -> moov -> mov -> seg_styp ) { is_seg_start = GF_TRUE ; seg_start = trak -> moov -> mov -> styp_start_offset ; } if ( trak -> moov -> mov -> root_sidx ) { is_seg_start = GF_TRUE ; sidx_start = trak -> moov -> mov -> sidx_start_offset ; sidx_end = trak -> moov -> mov -> sidx_end_offset ; if ( ! seg_start || ( sidx_start < seg_start ) ) seg_start = sidx_start ; } frag_start = trak -> moov -> mov -> current_top_box_start ; } else if ( trak -> moov -> mov -> store_traf_map ) { store_traf_map = GF_TRUE ; } sample_index = 0 ; i = 0 ; while ( ( trun = ( GF_TrackFragmentRunBox * ) gf_list_enum ( traf -> TrackRuns , & i ) ) ) { for ( j = 0 ; j < trun -> sample_count ; j ++ ) { GF_Err e ; s32 cts_offset = 0 ; if ( j < trun -> nb_samples ) { ent = & trun -> samples [ j ] ; } else { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>Track<S2SV_blank>%d<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>enough<S2SV_blank>trun<S2SV_blank>entries<S2SV_blank>(%d)<S2SV_blank>compared<S2SV_blank>to<S2SV_blank>sample<S2SV_blank>count<S2SV_blank>(%d)<S2SV_blank>in<S2SV_blank>run\\\\n\" , traf -> trex -> trackID , trun -> nb_samples , trun -> sample_count ) ) ; break ; } size = def_size ; duration = def_duration ; flags = def_flags ; cts_offset = ent -> CTS_Offset ; # ifdef GF_ENABLE_CTRN if ( trun -> use_ctrn ) { if ( ! j && ( trun -> ctrn_flags & GF_ISOM_CTRN_FIRST_SAMPLE ) ) { if ( trun -> ctrn_first_dur ) duration = ent -> Duration ; if ( trun -> ctrn_first_size ) size = ent -> size ; if ( trun -> ctrn_first_ctts ) flags = ent -> flags ; } else { if ( trun -> ctrn_dur ) duration = ent -> Duration ; if ( trun -> ctrn_size ) size = ent -> size ; if ( trun -> ctrn_sample_flags ) flags = ent -> flags ; } if ( trun -> ctrn_flags & 0xF0 ) { GF_TrunEntry * ref_entry ; if ( ! traf_ref ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>Track<S2SV_blank>%d<S2SV_blank>use<S2SV_blank>traf<S2SV_blank>inheritance<S2SV_blank>to<S2SV_blank>track<S2SV_blank>ID<S2SV_blank>%d<S2SV_blank>but<S2SV_blank>reference<S2SV_blank>traf<S2SV_blank>not<S2SV_blank>found\\\\n\" , traf -> trex -> trackID , traf -> trex -> inherit_from_traf_id ) ) ; break ; } ref_entry = traf_get_sample_entry ( traf_ref , sample_index ) ; if ( ! ref_entry ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>Track<S2SV_blank>%d<S2SV_blank>use<S2SV_blank>traf<S2SV_blank>inheritance<S2SV_blank>but<S2SV_blank>sample<S2SV_blank>%d<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>reference<S2SV_blank>traf\\\\n\" , traf -> trex -> trackID , sample_index + 1 ) ) ; break ; } if ( trun -> ctrn_flags & GF_ISOM_CTRN_INHERIT_DUR ) duration = ref_entry -> Duration ; if ( trun -> ctrn_flags & GF_ISOM_CTRN_INHERIT_SIZE ) size = ref_entry -> size ; if ( trun -> ctrn_flags & GF_ISOM_CTRN_INHERIT_FLAGS ) flags = ref_entry -> flags ; if ( trun -> ctrn_flags & GF_ISOM_CTRN_INHERIT_CTSO ) cts_offset = ref_entry -> CTS_Offset ; } } else # endif { if ( trun -> flags & GF_ISOM_TRUN_DURATION ) duration = ent -> Duration ; if ( trun -> flags & GF_ISOM_TRUN_SIZE ) size = ent -> size ; if ( trun -> flags & GF_ISOM_TRUN_FLAGS ) { flags = ent -> flags ; } else if ( ! j && ( trun -> flags & GF_ISOM_TRUN_FIRST_FLAG ) ) { flags = trun -> first_sample_flags ; } } sample_index ++ ; ent -> size = size ; ent -> Duration = duration ; ent -> flags = flags ; ent -> CTS_Offset = cts_offset ; last_dts += duration ; if ( ! trak -> Media -> information -> sampleTable -> SampleSize ) { trak -> Media -> information -> sampleTable -> SampleSize = ( GF_SampleSizeBox * ) gf_isom_box_new_parent ( & trak -> Media -> information -> sampleTable -> child_boxes , GF_ISOM_BOX_TYPE_STSZ ) ; if ( ! trak -> Media -> information -> sampleTable -> SampleSize ) return GF_OUT_OF_MEM ; } e = stbl_AppendSize ( trak -> Media -> information -> sampleTable , size , ent -> nb_pack ) ; if ( e ) return e ; if ( ! trak -> Media -> information -> sampleTable -> TimeToSample ) { trak -> Media -> information -> sampleTable -> TimeToSample = ( GF_TimeToSampleBox * ) gf_isom_box_new_parent ( & trak -> Media -> information -> sampleTable -> child_boxes , GF_ISOM_BOX_TYPE_STTS ) ; if ( ! trak -> Media -> information -> sampleTable -> TimeToSample ) return GF_OUT_OF_MEM ; } e = stbl_AppendTime ( trak -> Media -> information -> sampleTable , duration , ent -> nb_pack ) ; if ( e ) return e ; if ( ! j ) { u64 final_offset ; data_offset = base_offset ; if ( trun -> flags & GF_ISOM_TRUN_DATA_OFFSET ) { data_offset += trun -> data_offset ; chunk_size = 0 ; prev_trun_data_offset = trun -> data_offset ; if ( trun -> data_offset >= 0 ) { data_offset -= compressed_diff ; prev_trun_data_offset -= compressed_diff ; } } else if ( prev_trun_data_offset ) { data_offset += prev_trun_data_offset + chunk_size ; } else { data_offset += chunk_size ; if ( ( i == 1 ) && ( trun -> data_offset >= 0 ) ) { data_offset -= compressed_diff ; } } final_offset = data_offset ; if ( trak -> moov -> compressed_diff ) { final_offset += trak -> moov -> compressed_diff ; } if ( ! trak -> Media -> information -> sampleTable -> ChunkOffset ) { trak -> Media -> information -> sampleTable -> ChunkOffset = gf_isom_box_new_parent ( & trak -> Media -> information -> sampleTable -> child_boxes , GF_ISOM_BOX_TYPE_STCO ) ; if ( ! trak -> Media -> information -> sampleTable -> ChunkOffset ) return GF_OUT_OF_MEM ; } e = stbl_AppendChunk ( trak -> Media -> information -> sampleTable , final_offset ) ; if ( e ) return e ; if ( ! trak -> Media -> information -> sampleTable -> SampleToChunk ) { trak -> Media -> information -> sampleTable -> SampleToChunk = ( GF_SampleToChunkBox * ) gf_isom_box_new_parent ( & trak -> Media -> information -> sampleTable -> child_boxes , GF_ISOM_BOX_TYPE_STSC ) ; if ( ! trak -> Media -> information -> sampleTable -> SampleToChunk ) return GF_OUT_OF_MEM ; } e = stbl_AppendSampleToChunk ( trak -> Media -> information -> sampleTable , DescIndex , trun -> sample_count ) ; if ( e ) return e ; } chunk_size += size ; if ( store_traf_map && first_samp_in_traf ) { first_samp_in_traf = GF_FALSE ; e = stbl_AppendTrafMap ( trak -> Media -> information -> sampleTable , is_seg_start , seg_start , frag_start , moof_template , moof_template_size , sidx_start , sidx_end ) ; if ( e ) return e ; moof_template = NULL ; moof_template_size = 0 ; } if ( ent -> nb_pack > 1 ) { j += ent -> nb_pack - 1 ; traf_duration += ent -> nb_pack * duration ; continue ; } traf_duration += duration ; e = stbl_AppendCTSOffset ( trak -> Media -> information -> sampleTable , cts_offset ) ; if ( e ) return e ; sync = GF_ISOM_GET_FRAG_SYNC ( flags ) ; if ( trak -> Media -> information -> sampleTable -> no_sync_found && sync ) { trak -> Media -> information -> sampleTable -> no_sync_found = 0 ; } e = stbl_AppendRAP ( trak -> Media -> information -> sampleTable , sync ) ; if ( e ) return e ; pad = GF_ISOM_GET_FRAG_PAD ( flags ) ; if ( pad ) { e = stbl_AppendPadding ( trak -> Media -> information -> sampleTable , pad ) ; if ( e ) return e ; } degr = GF_ISOM_GET_FRAG_DEG ( flags ) ; if ( degr ) { e = stbl_AppendDegradation ( trak -> Media -> information -> sampleTable , degr ) ; if ( e ) return e ; } e = stbl_AppendDependencyType ( trak -> Media -> information -> sampleTable , GF_ISOM_GET_FRAG_LEAD ( flags ) , GF_ISOM_GET_FRAG_DEPENDS ( flags ) , GF_ISOM_GET_FRAG_DEPENDED ( flags ) , GF_ISOM_GET_FRAG_REDUNDANT ( flags ) ) ; if ( e ) return e ; } } if ( trak -> moov -> mov -> is_smooth && ! traf -> tfdt && ! traf -> tfxd ) { if ( is_first_merge ) trak -> dts_at_seg_start = trak -> dts_at_next_seg_start ; trak -> dts_at_next_seg_start += last_dts ; } if ( traf_duration && trak -> editBox && trak -> editBox -> editList ) { for ( i = 0 ; i < gf_list_count ( trak -> editBox -> editList -> entryList ) ; i ++ ) { GF_EdtsEntry * edts_e = gf_list_get ( trak -> editBox -> editList -> entryList , i ) ; if ( edts_e -> was_empty_dur ) { u64 extend_dur = traf_duration ; extend_dur *= trak -> moov -> mvhd -> timeScale ; extend_dur /= trak -> Media -> mediaHeader -> timeScale ; edts_e -> segmentDuration += extend_dur ; } else if ( ! edts_e -> segmentDuration ) { edts_e -> was_empty_dur = GF_TRUE ; if ( ( s64 ) traf_duration > edts_e -> mediaTime ) traf_duration -= edts_e -> mediaTime ; else traf_duration = 0 ; edts_e -> segmentDuration = traf_duration ; edts_e -> segmentDuration *= trak -> moov -> mvhd -> timeScale ; edts_e -> segmentDuration /= trak -> Media -> mediaHeader -> timeScale ; } } } * cumulated_offset = data_offset + chunk_size ; if ( traf -> sampleGroups ) { GF_List * groups ; GF_List * groupDescs ; Bool is_identical_sgpd = GF_TRUE ; u32 * new_idx = NULL , new_idx_count = 0 ; if ( ! trak -> Media -> information -> sampleTable -> sampleGroups ) trak -> Media -> information -> sampleTable -> sampleGroups = gf_list_new ( ) ; if ( ! trak -> Media -> information -> sampleTable -> sampleGroupsDescription ) trak -> Media -> information -> sampleTable -> sampleGroupsDescription = gf_list_new ( ) ; groupDescs = trak -> Media -> information -> sampleTable -> sampleGroupsDescription ; for ( i = 0 ; i < gf_list_count ( traf -> sampleGroupsDescription ) ; i ++ ) { GF_SampleGroupDescriptionBox * new_sgdesc = NULL ; GF_SampleGroupDescriptionBox * sgdesc = gf_list_get ( traf -> sampleGroupsDescription , i ) ; for ( j = 0 ; j < gf_list_count ( groupDescs ) ; j ++ ) { new_sgdesc = gf_list_get ( groupDescs , j ) ; if ( new_sgdesc -> grouping_type == sgdesc -> grouping_type ) break ; new_sgdesc = NULL ; } if ( ! new_sgdesc ) { gf_list_add ( groupDescs , sgdesc ) ; gf_list_add ( trak -> Media -> information -> sampleTable -> child_boxes , sgdesc ) ; gf_list_rem ( traf -> sampleGroupsDescription , i ) ; gf_list_del_item ( traf -> child_boxes , sgdesc ) ; i -- ; } else { u32 count ; is_identical_sgpd = gf_isom_is_identical_sgpd ( new_sgdesc , sgdesc , 0 ) ; if ( is_identical_sgpd ) continue ; new_idx_count = gf_list_count ( sgdesc -> group_descriptions ) ; new_idx = ( u32 * ) gf_malloc ( new_idx_count * sizeof ( u32 ) ) ; if ( ! new_idx ) return GF_OUT_OF_MEM ; count = 0 ; while ( gf_list_count ( sgdesc -> group_descriptions ) ) { void * sgpd_entry = gf_list_get ( sgdesc -> group_descriptions , 0 ) ; Bool new_entry = GF_TRUE ; for ( j = 0 ; j < gf_list_count ( new_sgdesc -> group_descriptions ) ; j ++ ) { void * ptr = gf_list_get ( new_sgdesc -> group_descriptions , j ) ; if ( gf_isom_is_identical_sgpd ( sgpd_entry , ptr , new_sgdesc -> grouping_type ) ) { new_idx [ count ] = j + 1 ; count ++ ; new_entry = GF_FALSE ; gf_free ( sgpd_entry ) ; break ; } } if ( new_entry ) { gf_list_add ( new_sgdesc -> group_descriptions , sgpd_entry ) ; new_idx [ count ] = gf_list_count ( new_sgdesc -> group_descriptions ) ; count ++ ; } gf_list_rem ( sgdesc -> group_descriptions , 0 ) ; } } } groups = trak -> Media -> information -> sampleTable -> sampleGroups ; for ( i = 0 ; i < gf_list_count ( traf -> sampleGroups ) ; i ++ ) { GF_SampleGroupBox * stbl_group = NULL ; GF_SampleGroupBox * frag_group = gf_list_get ( traf -> sampleGroups , i ) ; for ( j = 0 ; j < gf_list_count ( groups ) ; j ++ ) { stbl_group = gf_list_get ( groups , j ) ; if ( ( frag_group -> grouping_type == stbl_group -> grouping_type ) && ( frag_group -> grouping_type_parameter == stbl_group -> grouping_type_parameter ) ) break ; stbl_group = NULL ; } if ( ! stbl_group ) { stbl_group = ( GF_SampleGroupBox * ) gf_isom_box_new_parent ( & trak -> Media -> information -> sampleTable -> child_boxes , GF_ISOM_BOX_TYPE_SBGP ) ; if ( ! stbl_group ) return GF_OUT_OF_MEM ; stbl_group -> grouping_type = frag_group -> grouping_type ; stbl_group -> grouping_type_parameter = frag_group -> grouping_type_parameter ; stbl_group -> version = frag_group -> version ; gf_list_add ( groups , stbl_group ) ; } if ( is_identical_sgpd ) { for ( j = 0 ; j < frag_group -> entry_count ; j ++ ) frag_group -> sample_entries [ j ] . group_description_index &= 0x0FFFF ; if ( frag_group -> entry_count && stbl_group -> entry_count && ( frag_group -> sample_entries [ 0 ] . group_description_index == stbl_group -> sample_entries [ stbl_group -> entry_count - 1 ] . group_description_index ) ) { stbl_group -> sample_entries [ stbl_group -> entry_count - 1 ] . sample_count += frag_group -> sample_entries [ 0 ] . sample_count ; if ( frag_group -> entry_count > 1 ) { stbl_group -> sample_entries = gf_realloc ( stbl_group -> sample_entries , sizeof ( GF_SampleGroupEntry ) * ( stbl_group -> entry_count + frag_group -> entry_count - 1 ) ) ; memcpy ( & stbl_group -> sample_entries [ stbl_group -> entry_count ] , & frag_group -> sample_entries [ 1 ] , sizeof ( GF_SampleGroupEntry ) * ( frag_group -> entry_count - 1 ) ) ; stbl_group -> entry_count += frag_group -> entry_count - 1 ; } } else { stbl_group -> sample_entries = gf_realloc ( stbl_group -> sample_entries , sizeof ( GF_SampleGroupEntry ) * ( stbl_group -> entry_count + frag_group -> entry_count ) ) ; memcpy ( & stbl_group -> sample_entries [ stbl_group -> entry_count ] , & frag_group -> sample_entries [ 0 ] , sizeof ( GF_SampleGroupEntry ) * frag_group -> entry_count ) ; stbl_group -> entry_count += frag_group -> entry_count ; } } else { stbl_group -> sample_entries = gf_realloc ( stbl_group -> sample_entries , sizeof ( GF_SampleGroupEntry ) * ( stbl_group -> entry_count + frag_group -> entry_count ) ) ; for ( j = 0 ; j < frag_group -> entry_count ; j ++ ) { u32 sgidx = frag_group -> sample_entries [ j ] . group_description_index ; if ( sgidx > 0x10000 ) { sgidx -= 0x10001 ; if ( sgidx >= new_idx_count ) { GF_LOG ( GF_LOG_WARNING , GF_LOG_CONTAINER , ( \"[isobmf]<S2SV_blank>corrupted<S2SV_blank>sample<S2SV_blank>group<S2SV_blank>index<S2SV_blank>in<S2SV_blank>fragment<S2SV_blank>%d<S2SV_blank>but<S2SV_blank>only<S2SV_blank>%d<S2SV_blank>group<S2SV_blank>descriptions<S2SV_blank>in<S2SV_blank>fragment\\\\n\" , sgidx , new_idx_count ) ) ; } else { frag_group -> sample_entries [ j ] . group_description_index = new_idx [ sgidx ] ; } } } memcpy ( & stbl_group -> sample_entries [ stbl_group -> entry_count ] , & frag_group -> sample_entries [ 0 ] , sizeof ( GF_SampleGroupEntry ) * frag_group -> entry_count ) ; stbl_group -> entry_count += frag_group -> entry_count ; } } if ( new_idx ) gf_free ( new_idx ) ; } track_num = gf_isom_get_tracknum_from_id ( trak -> moov , trak -> Header -> trackID ) ; if ( gf_isom_is_cenc_media ( trak -> moov -> mov , track_num , DescIndex ) || traf -> sample_encryption ) { GF_SampleEncryptionBox * senc = NULL ; u32 scheme_type ; gf_isom_get_cenc_info ( trak -> moov -> mov , track_num , DescIndex , NULL , & scheme_type , NULL ) ; if ( traf -> sample_encryption ) { for ( i = 0 ; i < gf_list_count ( trak -> Media -> information -> sampleTable -> child_boxes ) ; i ++ ) { GF_Box * a = ( GF_Box * ) gf_list_get ( trak -> Media -> information -> sampleTable -> child_boxes , i ) ; if ( a -> type != traf -> sample_encryption -> type ) continue ; if ( ( a -> type == GF_ISOM_BOX_TYPE_UUID ) && ( ( ( GF_UUIDBox * ) a ) -> internal_4cc == GF_ISOM_BOX_UUID_PSEC ) ) { senc = ( GF_SampleEncryptionBox * ) a ; break ; } else if ( a -> type == GF_ISOM_BOX_TYPE_SENC ) { senc = ( GF_SampleEncryptionBox * ) a ; break ; } } if ( ! senc && trak -> sample_encryption ) senc = trak -> sample_encryption ; if ( ! senc ) { if ( traf -> sample_encryption -> piff_type == 1 ) { senc = ( GF_SampleEncryptionBox * ) gf_isom_create_piff_psec_box ( 1 , 0x2 , 0 , 0 , NULL ) ; } else { senc = gf_isom_create_samp_enc_box ( 1 , 0x2 ) ; } if ( ! trak -> Media -> information -> sampleTable -> child_boxes ) trak -> Media -> information -> sampleTable -> child_boxes = gf_list_new ( ) ; trak -> sample_encryption = senc ; if ( ! trak -> child_boxes ) trak -> child_boxes = gf_list_new ( ) ; gf_list_add ( trak -> child_boxes , senc ) ; } } if ( gf_isom_cenc_has_saiz_saio_traf ( traf , scheme_type ) ) { u32 nb_saio ; u32 aux_info_type ; u64 offset ; GF_Err e ; Bool is_encrypted ; GF_SampleAuxiliaryInfoOffsetBox * saio = NULL ; GF_SampleAuxiliaryInfoSizeBox * saiz = NULL ; offset = nb_saio = 0 ; for ( i = 0 ; i < gf_list_count ( traf -> sai_offsets ) ; i ++ ) { saio = ( GF_SampleAuxiliaryInfoOffsetBox * ) gf_list_get ( traf -> sai_offsets , i ) ; aux_info_type = saio -> aux_info_type ; if ( ! aux_info_type ) aux_info_type = scheme_type ; if ( ( aux_info_type == GF_ISOM_CENC_SCHEME ) || ( aux_info_type == GF_ISOM_CBC_SCHEME ) || ( aux_info_type == GF_ISOM_CENS_SCHEME ) || ( aux_info_type == GF_ISOM_CBCS_SCHEME ) || ( gf_list_count ( traf -> sai_offsets ) == 1 ) ) { <S2SV_StartBug> offset = saio -> offsets [ 0 ] + moof_offset ; <S2SV_EndBug> nb_saio = saio -> entry_count ; break ; } } <S2SV_StartBug> for ( i = 0 ; i < gf_list_count ( traf -> sai_sizes ) ; i ++ ) { <S2SV_EndBug> saiz = ( GF_SampleAuxiliaryInfoSizeBox * ) gf_list_get ( traf -> sai_sizes , i ) ; aux_info_type = saiz -> aux_info_type ; if ( ! aux_info_type ) aux_info_type = scheme_type ; if ( ( aux_info_type == GF_ISOM_CENC_SCHEME ) || ( aux_info_type == GF_ISOM_CBC_SCHEME ) || ( aux_info_type == GF_ISOM_CENS_SCHEME ) || ( aux_info_type == GF_ISOM_CBCS_SCHEME ) || ( gf_list_count ( traf -> sai_sizes ) == 1 ) ) { break ; <S2SV_StartBug> } <S2SV_EndBug> } if ( saiz && saio && senc ) { for ( i = 0 ; i < saiz -> sample_count ; i ++ ) { GF_CENCSampleAuxInfo * sai ; const u8 * key_info = NULL ; u32 key_info_size ; u64 cur_position ; if ( nb_saio != 1 ) offset = saio -> offsets [ i ] + moof_offset ; size = saiz -> default_sample_info_size ? saiz -> default_sample_info_size : saiz -> sample_info_size [ i ] ; cur_position = gf_bs_get_position ( trak -> moov -> mov -> movieFileMap -> bs ) ; gf_bs_seek ( trak -> moov -> mov -> movieFileMap -> bs , offset ) ; GF_SAFEALLOC ( sai , GF_CENCSampleAuxInfo ) ; if ( ! sai ) return GF_OUT_OF_MEM ; e = gf_isom_get_sample_cenc_info_internal ( trak , traf , senc , i + 1 , & is_encrypted , NULL , NULL , & key_info , & key_info_size ) ; if ( e ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"[isobmf]<S2SV_blank>could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>cenc<S2SV_blank>info<S2SV_blank>for<S2SV_blank>sample<S2SV_blank>%d:<S2SV_blank>%s\\\\n\" , i + 1 , gf_error_to_string ( e ) ) ) ; return e ; } if ( is_encrypted ) { sai -> cenc_data_size = size ; sai -> cenc_data = gf_malloc ( sizeof ( u8 ) * size ) ; if ( ! sai -> cenc_data ) return GF_OUT_OF_MEM ; gf_bs_read_data ( trak -> moov -> mov -> movieFileMap -> bs , sai -> cenc_data , sai -> cenc_data_size ) ; } else { sai -> isNotProtected = 1 ; } if ( key_info ) { if ( ! key_info [ 0 ] ) { if ( size > key_info [ 3 ] ) senc -> flags = 0x00000002 ; } else { senc -> flags = 0x00000002 ; } } gf_bs_seek ( trak -> moov -> mov -> movieFileMap -> bs , cur_position ) ; gf_list_add ( senc -> samp_aux_info , sai ) ; e = gf_isom_cenc_merge_saiz_saio ( senc , trak -> Media -> information -> sampleTable , offset , size ) ; if ( e ) return e ; if ( nb_saio == 1 ) offset += size ; } } } else if ( traf -> sample_encryption ) { senc_Parse ( trak -> moov -> mov -> movieFileMap -> bs , trak , traf , traf -> sample_encryption ) ; trak -> sample_encryption -> AlgorithmID = traf -> sample_encryption -> AlgorithmID ; if ( ! trak -> sample_encryption -> IV_size ) trak -> sample_encryption -> IV_size = traf -> sample_encryption -> IV_size ; if ( ! trak -> sample_encryption -> samp_aux_info ) trak -> sample_encryption -> samp_aux_info = gf_list_new ( ) ; gf_list_transfer ( trak -> sample_encryption -> samp_aux_info , traf -> sample_encryption -> samp_aux_info ) ; if ( traf -> sample_encryption -> flags & 0x00000002 ) trak -> sample_encryption -> flags |= 0x00000002 ; } } return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( saio -> offsets && saio -> entry_count ) { <S2SV_ModStart> ; } } saio = NULL ; } <S2SV_ModStart> break ; } saiz = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rc_get_svc_params ( VP9_COMP * cpi ) { VP9_COMMON * const cm = & cpi -> common ; RATE_CONTROL * const rc = & cpi -> rc ; <S2SV_StartBug> int target = rc -> av_per_frame_bandwidth ; <S2SV_EndBug> if ( ( cm -> current_video_frame == 0 ) || <S2SV_StartBug> ( cm -> frame_flags & FRAMEFLAGS_KEY ) || <S2SV_EndBug> ( cpi -> oxcf . auto_key && ( rc -> frames_since_key % <S2SV_StartBug> cpi -> key_frame_frequency == 0 ) ) ) { <S2SV_EndBug> cm -> frame_type = KEY_FRAME ; rc -> source_alt_ref_active = 0 ; <S2SV_StartBug> if ( cpi -> pass == 0 && cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { <S2SV_EndBug> target = calc_iframe_target_size_one_pass_cbr ( cpi ) ; } } else { cm -> frame_type = INTER_FRAME ; if ( cpi -> pass == 0 && cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { target = calc_pframe_target_size_one_pass_cbr ( cpi ) ; } } vp9_rc_set_frame_target ( cpi , target ) ; rc -> frames_till_gf_update_due = INT_MAX ; rc -> baseline_gf_interval = INT_MAX ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = rc -> avg_frame_bandwidth ; const int layer = LAYER_IDS_TO_IDX ( cpi -> svc . spatial_layer_id , cpi -> svc . temporal_layer_id , cpi -> svc . number_temporal_layers ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) || ( cpi <S2SV_ModEnd> -> frame_flags & <S2SV_ModStart> % cpi -> oxcf . key_freq <S2SV_ModEnd> == 0 ) <S2SV_ModStart> ; if ( is_two_pass_svc ( cpi ) ) { cpi -> svc . layer_context [ layer ] . is_key_frame = 1 ; cpi -> ref_frame_flags &= ( ~ VP9_LAST_FLAG & ~ VP9_GOLD_FLAG & ~ VP9_ALT_FLAG ) ; } else if ( is_one_pass_cbr_svc ( cpi ) ) { cpi -> svc . layer_context [ layer ] . is_key_frame = 1 ; reset_temporal_layer_to_zero ( cpi ) ; cpi -> ref_frame_flags &= ( ~ VP9_LAST_FLAG & ~ VP9_GOLD_FLAG & ~ VP9_ALT_FLAG ) ; target = calc_iframe_target_size_one_pass_cbr ( cpi ) ; } } else { cm -> frame_type = INTER_FRAME ; if ( is_two_pass_svc ( cpi ) ) { LAYER_CONTEXT * lc = & cpi -> svc . layer_context [ layer ] ; if ( cpi -> svc . spatial_layer_id == 0 ) { lc -> is_key_frame = 0 ; } else { lc -> is_key_frame = cpi -> svc . layer_context [ cpi -> svc . temporal_layer_id ] . is_key_frame ; if ( lc -> is_key_frame ) cpi -> ref_frame_flags &= ( ~ VP9_LAST_FLAG ) ; } cpi -> ref_frame_flags &= ( ~ VP9_ALT_FLAG ) ; } else if ( is_one_pass_cbr_svc ( cpi ) ) { LAYER_CONTEXT * lc = & cpi -> svc . layer_context [ layer ] ; if ( cpi -> svc . spatial_layer_id == 0 ) { lc -> is_key_frame = 0 ; } else { lc -> is_key_frame = cpi -> svc . layer_context [ cpi -> svc . temporal_layer_id ] . is_key_frame ; } target = calc_pframe_target_size_one_pass_cbr ( cpi ) ; } } if ( <S2SV_ModEnd> cpi -> oxcf <S2SV_ModStart> -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) vp9_cyclic_refresh_update_parameters ( cpi ) ; <S2SV_ModEnd> vp9_rc_set_frame_target ( cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4594\n\n```\nCWE-000 static int __sys_sendmsg ( struct socket * sock , struct msghdr __user * msg , struct msghdr * msg_sys , unsigned flags , struct used_address * used_address ) { struct compat_msghdr __user * msg_compat = ( struct compat_msghdr __user * ) msg ; struct sockaddr_storage address ; struct iovec iovstack [ UIO_FASTIOV ] , * iov = iovstack ; unsigned char ctl [ sizeof ( struct cmsghdr ) + 20 ] __attribute__ ( ( aligned ( sizeof ( __kernel_size_t ) ) ) ) ; unsigned char * ctl_buf = ctl ; int err , ctl_len , iov_size , total_len ; err = - EFAULT ; if ( MSG_CMSG_COMPAT & flags ) { if ( get_compat_msghdr ( msg_sys , msg_compat ) ) return - EFAULT ; } else if ( copy_from_user ( msg_sys , msg , sizeof ( struct msghdr ) ) ) return - EFAULT ; err = - EMSGSIZE ; if ( msg_sys -> msg_iovlen > UIO_MAXIOV ) goto out ; err = - ENOMEM ; iov_size = msg_sys -> msg_iovlen * sizeof ( struct iovec ) ; if ( msg_sys -> msg_iovlen > UIO_FASTIOV ) { iov = sock_kmalloc ( sock -> sk , iov_size , GFP_KERNEL ) ; if ( ! iov ) goto out ; } if ( MSG_CMSG_COMPAT & flags ) { err = verify_compat_iovec ( msg_sys , iov , ( struct sockaddr * ) & address , VERIFY_READ ) ; } else err = verify_iovec ( msg_sys , iov , ( struct sockaddr * ) & address , VERIFY_READ ) ; if ( err < 0 ) goto out_freeiov ; total_len = err ; err = - ENOBUFS ; if ( msg_sys -> msg_controllen > INT_MAX ) goto out_freeiov ; ctl_len = msg_sys -> msg_controllen ; if ( ( MSG_CMSG_COMPAT & flags ) && ctl_len ) { err = cmsghdr_from_user_compat_to_kern ( msg_sys , sock -> sk , ctl , sizeof ( ctl ) ) ; if ( err ) goto out_freeiov ; ctl_buf = msg_sys -> msg_control ; ctl_len = msg_sys -> msg_controllen ; } else if ( ctl_len ) { if ( ctl_len > sizeof ( ctl ) ) { ctl_buf = sock_kmalloc ( sock -> sk , ctl_len , GFP_KERNEL ) ; if ( ctl_buf == NULL ) goto out_freeiov ; } err = - EFAULT ; if ( copy_from_user ( ctl_buf , ( void __user __force * ) msg_sys -> msg_control , ctl_len ) ) goto out_freectl ; msg_sys -> msg_control = ctl_buf ; } msg_sys -> msg_flags = flags ; if ( sock -> file -> f_flags & O_NONBLOCK ) msg_sys -> msg_flags |= MSG_DONTWAIT ; <S2SV_StartBug> if ( used_address && used_address -> name_len == msg_sys -> msg_namelen && <S2SV_EndBug> <S2SV_StartBug> ! memcmp ( & used_address -> name , msg -> msg_name , <S2SV_EndBug> used_address -> name_len ) ) { err = sock_sendmsg_nosec ( sock , msg_sys , total_len ) ; goto out_freectl ; } err = sock_sendmsg ( sock , msg_sys , total_len ) ; if ( used_address && err >= 0 ) { used_address -> name_len = msg_sys -> msg_namelen ; <S2SV_StartBug> memcpy ( & used_address -> name , msg -> msg_name , <S2SV_EndBug> used_address -> name_len ) ; } out_freectl : if ( ctl_buf != ctl ) sock_kfree_s ( sock -> sk , ctl_buf , ctl_len ) ; out_freeiov : if ( iov != iovstack ) sock_kfree_s ( sock -> sk , iov , iov_size ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( used_address && msg_sys -> msg_name && <S2SV_ModStart> -> name , msg_sys <S2SV_ModEnd> -> msg_name , <S2SV_ModStart> -> msg_namelen ; if ( msg_sys -> msg_name ) <S2SV_ModStart> -> name , msg_sys <S2SV_ModEnd> -> msg_name ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4588\n\n```\nCWE-119 static int do_ip_vs_set_ctl ( struct sock * sk , int cmd , void __user * user , unsigned int len ) { int ret ; unsigned char arg [ MAX_ARG_LEN ] ; struct ip_vs_service_user * usvc_compat ; struct ip_vs_service_user_kern usvc ; struct ip_vs_service * svc ; struct ip_vs_dest_user * udest_compat ; struct ip_vs_dest_user_kern udest ; if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; <S2SV_StartBug> if ( len != set_arglen [ SET_CMDID ( cmd ) ] ) { <S2SV_EndBug> pr_err ( \"set_ctl:<S2SV_blank>len<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u\\\\n\" , len , set_arglen [ SET_CMDID ( cmd ) ] ) ; return - EINVAL ; } if ( copy_from_user ( arg , user , len ) != 0 ) return - EFAULT ; ip_vs_use_count_inc ( ) ; if ( mutex_lock_interruptible ( & __ip_vs_mutex ) ) { ret = - ERESTARTSYS ; goto out_dec ; } if ( cmd == IP_VS_SO_SET_FLUSH ) { ret = ip_vs_flush ( ) ; goto out_unlock ; } else if ( cmd == IP_VS_SO_SET_TIMEOUT ) { ret = ip_vs_set_timeout ( ( struct ip_vs_timeout_user * ) arg ) ; goto out_unlock ; } else if ( cmd == IP_VS_SO_SET_STARTDAEMON ) { struct ip_vs_daemon_user * dm = ( struct ip_vs_daemon_user * ) arg ; ret = start_sync_thread ( dm -> state , dm -> mcast_ifn , dm -> syncid ) ; goto out_unlock ; } else if ( cmd == IP_VS_SO_SET_STOPDAEMON ) { struct ip_vs_daemon_user * dm = ( struct ip_vs_daemon_user * ) arg ; ret = stop_sync_thread ( dm -> state ) ; goto out_unlock ; } usvc_compat = ( struct ip_vs_service_user * ) arg ; udest_compat = ( struct ip_vs_dest_user * ) ( usvc_compat + 1 ) ; ip_vs_copy_usvc_compat ( & usvc , usvc_compat ) ; ip_vs_copy_udest_compat ( & udest , udest_compat ) ; if ( cmd == IP_VS_SO_SET_ZERO ) { if ( ! usvc . fwmark && ! usvc . addr . ip && ! usvc . port ) { ret = ip_vs_zero_all ( ) ; goto out_unlock ; } } if ( usvc . protocol != IPPROTO_TCP && usvc . protocol != IPPROTO_UDP ) { pr_err ( \"set_ctl:<S2SV_blank>invalid<S2SV_blank>protocol:<S2SV_blank>%d<S2SV_blank>%pI4:%d<S2SV_blank>%s\\\\n\" , usvc . protocol , & usvc . addr . ip , ntohs ( usvc . port ) , usvc . sched_name ) ; ret = - EFAULT ; goto out_unlock ; } if ( usvc . fwmark == 0 ) svc = __ip_vs_service_get ( usvc . af , usvc . protocol , & usvc . addr , usvc . port ) ; else svc = __ip_vs_svc_fwm_get ( usvc . af , usvc . fwmark ) ; if ( cmd != IP_VS_SO_SET_ADD && ( svc == NULL || svc -> protocol != usvc . protocol ) ) { ret = - ESRCH ; goto out_unlock ; } switch ( cmd ) { case IP_VS_SO_SET_ADD : if ( svc != NULL ) ret = - EEXIST ; else ret = ip_vs_add_service ( & usvc , & svc ) ; break ; case IP_VS_SO_SET_EDIT : ret = ip_vs_edit_service ( svc , & usvc ) ; break ; case IP_VS_SO_SET_DEL : ret = ip_vs_del_service ( svc ) ; if ( ! ret ) goto out_unlock ; break ; case IP_VS_SO_SET_ZERO : ret = ip_vs_zero_service ( svc ) ; break ; case IP_VS_SO_SET_ADDDEST : ret = ip_vs_add_dest ( svc , & udest ) ; break ; case IP_VS_SO_SET_EDITDEST : ret = ip_vs_edit_dest ( svc , & udest ) ; break ; case IP_VS_SO_SET_DELDEST : ret = ip_vs_del_dest ( svc , & udest ) ; break ; default : ret = - EINVAL ; } if ( svc ) ip_vs_service_put ( svc ) ; out_unlock : mutex_unlock ( & __ip_vs_mutex ) ; out_dec : ip_vs_use_count_dec ( ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_SET_MAX ) return - EINVAL ; if ( len < 0 || len > MAX_ARG_LEN ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void read_mv_probs ( nmv_context * ctx , int allow_hp , vp9_reader * r ) { <S2SV_EndBug> int i , j ; update_mv_probs ( ctx -> joints , MV_JOINTS - 1 , r ) ; for ( i = 0 ; i < 2 ; ++ i ) { nmv_component * const comp_ctx = & ctx -> comps [ i ] ; update_mv_probs ( & comp_ctx -> sign , 1 , r ) ; update_mv_probs ( comp_ctx -> classes , MV_CLASSES - 1 , r ) ; update_mv_probs ( comp_ctx -> class0 , CLASS0_SIZE - 1 , r ) ; update_mv_probs ( comp_ctx -> bits , MV_OFFSET_BITS , r ) ; } for ( i = 0 ; i < 2 ; ++ i ) { nmv_component * const comp_ctx = & ctx -> comps [ i ] ; for ( j = 0 ; j < CLASS0_SIZE ; ++ j ) update_mv_probs ( comp_ctx -> class0_fp [ j ] , MV_FP_SIZE - 1 , r ) ; update_mv_probs ( comp_ctx -> fp , 3 , r ) ; } if ( allow_hp ) { for ( i = 0 ; i < 2 ; ++ i ) { nmv_component * const comp_ctx = & ctx -> comps [ i ] ; update_mv_probs ( & comp_ctx -> class0_hp , 1 , r ) ; update_mv_probs ( & comp_ctx -> hp , 1 , r ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int allow_hp , vpx_reader <S2SV_ModEnd> * r )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 static ltxtquery * queryin ( char * buf ) { QPRS_STATE state ; int32 i ; ltxtquery * query ; int32 commonlen ; ITEM * ptr ; NODE * tmp ; int32 pos = 0 ; # ifdef BS_DEBUG char pbuf [ 16384 ] , * cur ; # endif state . buf = buf ; state . state = WAITOPERAND ; state . count = 0 ; state . num = 0 ; state . str = NULL ; state . sumlen = 0 ; state . lenop = 64 ; state . curop = state . op = ( char * ) palloc ( state . lenop ) ; * ( state . curop ) = '\\\\0' ; makepol ( & state ) ; if ( ! state . num ) ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) , errdetail ( \"Empty<S2SV_blank>query.\" ) ) ) ; <S2SV_StartBug> commonlen = COMPUTESIZE ( state . num , state . sumlen ) ; <S2SV_EndBug> query = ( ltxtquery * ) palloc ( commonlen ) ; SET_VARSIZE ( query , commonlen ) ; query -> size = state . num ; ptr = GETQUERY ( query ) ; for ( i = 0 ; i < state . num ; i ++ ) { ptr [ i ] . type = state . str -> type ; ptr [ i ] . val = state . str -> val ; ptr [ i ] . distance = state . str -> distance ; ptr [ i ] . length = state . str -> length ; ptr [ i ] . flag = state . str -> flag ; tmp = state . str -> next ; pfree ( state . str ) ; state . str = tmp ; } memcpy ( ( void * ) GETOPERAND ( query ) , ( void * ) state . op , state . sumlen ) ; pfree ( state . op ) ; pos = 0 ; findoprnd ( ptr , & pos ) ; return query ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( LTXTQUERY_TOO_BIG ( state . num , state . sumlen ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"ltxtquery<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static inline void uipc_wakeup_locked ( void ) { char sig_on = 1 ; BTIF_TRACE_EVENT ( \"UIPC<S2SV_blank>SEND<S2SV_blank>WAKE<S2SV_blank>UP\" ) ; <S2SV_StartBug> send ( uipc_main . signal_fds [ 1 ] , & sig_on , sizeof ( sig_on ) , 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"UIPC<S2SV_blank>SEND<S2SV_blank>WAKE<S2SV_blank>UP\" ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11455\n\n```\nCWE-125 void Util_handleEscapes ( char * buf ) { int editpos ; int insertpos ; ASSERT ( buf ) ; for ( editpos = insertpos = 0 ; * ( buf + editpos ) != '\\\\0' ; editpos ++ , insertpos ++ ) { if ( * ( buf + editpos ) == '\\\\\\\\' ) { switch ( * ( buf + editpos + 1 ) ) { case 'n' : * ( buf + insertpos ) = '\\\\n' ; editpos ++ ; break ; case 't' : * ( buf + insertpos ) = '\\\\t' ; editpos ++ ; break ; case 'r' : * ( buf + insertpos ) = '\\\\r' ; editpos ++ ; break ; case '<S2SV_blank>' : * ( buf + insertpos ) = '<S2SV_blank>' ; editpos ++ ; break ; case '0' : if ( * ( buf + editpos + 2 ) == 'x' ) { if ( ( * ( buf + editpos + 3 ) == '0' && * ( buf + editpos + 4 ) == '0' ) ) { * ( buf + insertpos ) = * ( buf + editpos ) ; } else { <S2SV_StartBug> * ( buf + insertpos ) = x2c ( & buf [ editpos + 3 ] ) ; <S2SV_EndBug> editpos += 4 ; } } break ; case '\\\\\\\\' : * ( buf + insertpos ) = '\\\\\\\\' ; editpos ++ ; break ; default : * ( buf + insertpos ) = * ( buf + editpos ) ; } } else { * ( buf + insertpos ) = * ( buf + editpos ) ; } } * ( buf + insertpos ) = '\\\\0' ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> insertpos ) = _x2c <S2SV_ModEnd> ( & buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8957\n\n```\nCWE-119 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , length ; ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } switch ( sun_info . maptype ) <S2SV_StartBug> { <S2SV_EndBug> case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( sun_info . depth >= 8 ) && ( ( number_pixels * ( ( sun_info . depth + 7 ) / 8 ) ) > sun_info . length ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( sun_info . length , bytes_per_line * sun_info . width ) , sizeof ( * sun_data ) ) ; if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; sun_pixels = sun_data ; bytes_per_line = 0 ; if ( sun_info . type == RT_ENCODED ) { size_t height ; height = sun_info . height ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * height ) ; sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; } p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { if ( bytes_per_line == 0 ) bytes_per_line = image -> columns ; length = image -> rows * ( image -> columns + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> maptype ) { case RMT_NONE : break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void nonrd_pick_partition ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_EndBug> TOKENEXTRA * * tp , int mi_row , <S2SV_StartBug> int mi_col , BLOCK_SIZE bsize , int * rate , <S2SV_EndBug> <S2SV_StartBug> int64_t * dist , int do_recon , int64_t best_rd ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; const int ms = num_8x8_blocks_wide_lookup [ bsize ] / 2 ; TOKENEXTRA * tp_orig = * tp ; <S2SV_StartBug> PICK_MODE_CONTEXT * ctx = get_block_context ( x , bsize ) ; <S2SV_EndBug> int i ; <S2SV_StartBug> BLOCK_SIZE subsize ; <S2SV_EndBug> int this_rate , sum_rate = 0 , best_rate = INT_MAX ; int64_t this_dist , sum_dist = 0 , best_dist = INT64_MAX ; int64_t sum_rd = 0 ; int do_split = bsize >= BLOCK_8X8 ; int do_rect = 1 ; const int force_horz_split = ( mi_row + ms >= cm -> mi_rows ) ; const int force_vert_split = ( mi_col + ms >= cm -> mi_cols ) ; const int xss = x -> e_mbd . plane [ 1 ] . subsampling_x ; const int yss = x -> e_mbd . plane [ 1 ] . subsampling_y ; int partition_none_allowed = ! force_horz_split && ! force_vert_split ; int partition_horz_allowed = ! force_vert_split && yss <= xss && bsize >= BLOCK_8X8 ; int partition_vert_allowed = ! force_horz_split && xss <= yss && bsize >= BLOCK_8X8 ; ( void ) * tp_orig ; <S2SV_StartBug> if ( bsize < BLOCK_8X8 ) { <S2SV_EndBug> if ( x -> ab_index != 0 ) { * rate = 0 ; * dist = 0 ; return ; } } assert ( num_8x8_blocks_wide_lookup [ bsize ] == num_8x8_blocks_high_lookup [ bsize ] ) ; <S2SV_StartBug> x -> in_active_map = check_active_map ( cpi , x , mi_row , mi_col , bsize ) ; <S2SV_EndBug> if ( cpi -> sf . auto_min_max_partition_size ) { <S2SV_StartBug> partition_none_allowed &= ( bsize <= cpi -> sf . max_partition_size && <S2SV_EndBug> <S2SV_StartBug> bsize >= cpi -> sf . min_partition_size ) ; <S2SV_EndBug> <S2SV_StartBug> partition_horz_allowed &= ( ( bsize <= cpi -> sf . max_partition_size && <S2SV_EndBug> <S2SV_StartBug> bsize > cpi -> sf . min_partition_size ) || <S2SV_EndBug> force_horz_split ) ; <S2SV_StartBug> partition_vert_allowed &= ( ( bsize <= cpi -> sf . max_partition_size && <S2SV_EndBug> <S2SV_StartBug> bsize > cpi -> sf . min_partition_size ) || <S2SV_EndBug> force_vert_split ) ; <S2SV_StartBug> do_split &= bsize > cpi -> sf . min_partition_size ; <S2SV_EndBug> } if ( cpi -> sf . use_square_partition_only ) { partition_horz_allowed &= force_horz_split ; partition_vert_allowed &= force_vert_split ; } <S2SV_StartBug> if ( ! x -> in_active_map && ( partition_horz_allowed || partition_vert_allowed ) ) <S2SV_EndBug> do_split = 0 ; if ( partition_none_allowed ) { <S2SV_StartBug> nonrd_pick_sb_modes ( cpi , tile , mi_row , mi_col , <S2SV_EndBug> <S2SV_StartBug> & this_rate , & this_dist , bsize ) ; <S2SV_EndBug> ctx -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> if ( this_rate != INT_MAX ) { <S2SV_EndBug> int pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> this_rate += x -> partition_cost [ pl ] [ PARTITION_NONE ] ; <S2SV_EndBug> <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , this_rate , this_dist ) ; <S2SV_EndBug> if ( sum_rd < best_rd ) { <S2SV_StartBug> int64_t stop_thresh = 4096 ; <S2SV_EndBug> int64_t stop_thresh_rd ; best_rate = this_rate ; best_dist = this_dist ; best_rd = sum_rd ; if ( bsize >= BLOCK_8X8 ) * ( get_sb_partitioning ( x , bsize ) ) = bsize ; stop_thresh >>= 8 - ( b_width_log2_lookup [ bsize ] + b_height_log2_lookup [ bsize ] ) ; <S2SV_StartBug> stop_thresh_rd = RDCOST ( x -> rdmult , x -> rddiv , 0 , stop_thresh ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! x -> e_mbd . lossless && best_rd < stop_thresh_rd ) { <S2SV_EndBug> do_split = 0 ; do_rect = 0 ; } } } <S2SV_StartBug> if ( ! x -> in_active_map ) { <S2SV_EndBug> do_split = 0 ; do_rect = 0 ; } } store_pred_mv ( x , ctx ) ; sum_rd = 0 ; if ( do_split ) { int pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> sum_rate += x -> partition_cost [ pl ] [ PARTITION_SPLIT ] ; <S2SV_EndBug> subsize = get_subsize ( bsize , PARTITION_SPLIT ) ; <S2SV_StartBug> for ( i = 0 ; i < 4 && sum_rd < best_rd ; ++ i ) { <S2SV_EndBug> const int x_idx = ( i & 1 ) * ms ; const int y_idx = ( i >> 1 ) * ms ; if ( mi_row + y_idx >= cm -> mi_rows || mi_col + x_idx >= cm -> mi_cols ) continue ; <S2SV_StartBug> * get_sb_index ( x , subsize ) = i ; <S2SV_EndBug> load_pred_mv ( x , ctx ) ; <S2SV_StartBug> nonrd_pick_partition ( cpi , tile , tp , mi_row + y_idx , mi_col + x_idx , <S2SV_EndBug> <S2SV_StartBug> subsize , & this_rate , & this_dist , 0 , <S2SV_EndBug> best_rd - sum_rd ) ; if ( this_rate == INT_MAX ) { <S2SV_StartBug> sum_rd = INT64_MAX ; <S2SV_EndBug> } else { <S2SV_StartBug> sum_rate += this_rate ; <S2SV_EndBug> sum_dist += this_dist ; sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; } } if ( sum_rd < best_rd ) { best_rate = sum_rate ; best_dist = sum_dist ; best_rd = sum_rd ; * ( get_sb_partitioning ( x , bsize ) ) = subsize ; } else { <S2SV_StartBug> if ( cpi -> sf . less_rectangular_check ) <S2SV_EndBug> do_rect &= ! partition_none_allowed ; } } if ( partition_horz_allowed && do_rect ) { subsize = get_subsize ( bsize , PARTITION_HORZ ) ; <S2SV_StartBug> * get_sb_index ( x , subsize ) = 0 ; <S2SV_EndBug> if ( cpi -> sf . adaptive_motion_search ) load_pred_mv ( x , ctx ) ; nonrd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & this_rate , & this_dist , subsize ) ; get_block_context ( x , subsize ) -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_EndBug> if ( sum_rd < best_rd && mi_row + ms < cm -> mi_rows ) { <S2SV_StartBug> * get_sb_index ( x , subsize ) = 1 ; <S2SV_EndBug> load_pred_mv ( x , ctx ) ; <S2SV_StartBug> nonrd_pick_sb_modes ( cpi , tile , mi_row + ms , mi_col , <S2SV_EndBug> <S2SV_StartBug> & this_rate , & this_dist , subsize ) ; <S2SV_EndBug> get_block_context ( x , subsize ) -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> if ( this_rate == INT_MAX ) { <S2SV_EndBug> <S2SV_StartBug> sum_rd = INT64_MAX ; <S2SV_EndBug> } else { int pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> this_rate += x -> partition_cost [ pl ] [ PARTITION_HORZ ] ; <S2SV_EndBug> <S2SV_StartBug> sum_rate += this_rate ; <S2SV_EndBug> sum_dist += this_dist ; <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_EndBug> } } if ( sum_rd < best_rd ) { best_rd = sum_rd ; best_rate = sum_rate ; best_dist = sum_dist ; * ( get_sb_partitioning ( x , bsize ) ) = subsize ; } } if ( partition_vert_allowed && do_rect ) { subsize = get_subsize ( bsize , PARTITION_VERT ) ; <S2SV_StartBug> * get_sb_index ( x , subsize ) = 0 ; <S2SV_EndBug> if ( cpi -> sf . adaptive_motion_search ) load_pred_mv ( x , ctx ) ; nonrd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & this_rate , & this_dist , subsize ) ; get_block_context ( x , subsize ) -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_EndBug> if ( sum_rd < best_rd && mi_col + ms < cm -> mi_cols ) { <S2SV_StartBug> * get_sb_index ( x , subsize ) = 1 ; <S2SV_EndBug> load_pred_mv ( x , ctx ) ; <S2SV_StartBug> nonrd_pick_sb_modes ( cpi , tile , mi_row , mi_col + ms , <S2SV_EndBug> <S2SV_StartBug> & this_rate , & this_dist , subsize ) ; <S2SV_EndBug> get_block_context ( x , subsize ) -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> if ( this_rate == INT_MAX ) { <S2SV_EndBug> <S2SV_StartBug> sum_rd = INT64_MAX ; <S2SV_EndBug> } else { int pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> this_rate += x -> partition_cost [ pl ] [ PARTITION_VERT ] ; <S2SV_EndBug> <S2SV_StartBug> sum_rate += this_rate ; <S2SV_EndBug> sum_dist += this_dist ; <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_EndBug> } } if ( sum_rd < best_rd ) { best_rate = sum_rate ; best_dist = sum_dist ; best_rd = sum_rd ; * ( get_sb_partitioning ( x , bsize ) ) = subsize ; } } * rate = best_rate ; * dist = best_dist ; <S2SV_StartBug> if ( best_rate == INT_MAX ) <S2SV_EndBug> return ; fill_mode_info_sb ( cm , x , mi_row , mi_col , bsize , <S2SV_StartBug> * ( get_sb_partitioning ( x , bsize ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( best_rate < INT_MAX && best_dist < INT64_MAX && do_recon ) { <S2SV_EndBug> int output_enabled = ( bsize == BLOCK_64X64 ) ; <S2SV_StartBug> if ( ( cpi -> oxcf . aq_mode == COMPLEXITY_AQ ) && cm -> seg . update_map ) { <S2SV_EndBug> vp9_select_in_frame_q_segment ( cpi , mi_row , mi_col , output_enabled , <S2SV_StartBug> best_rate ) ; <S2SV_EndBug> } if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) vp9_cyclic_refresh_set_rate_and_dist_sb ( cpi -> cyclic_refresh , best_rate , best_dist ) ; encode_sb_rt ( cpi , tile , tp , mi_row , mi_col , output_enabled , bsize ) ; } <S2SV_StartBug> if ( bsize == BLOCK_64X64 ) { <S2SV_EndBug> assert ( tp_orig < * tp ) ; <S2SV_StartBug> assert ( best_rate < INT_MAX ) ; <S2SV_EndBug> <S2SV_StartBug> assert ( best_dist < INT64_MAX ) ; <S2SV_EndBug> } else { assert ( tp_orig == * tp ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , TileDataEnc * tile_data <S2SV_ModEnd> , TOKENEXTRA * <S2SV_ModStart> BLOCK_SIZE bsize , RD_COST * rd_cost , <S2SV_ModEnd> int do_recon , <S2SV_ModStart> , int64_t best_rd , PC_TREE * pc_tree ) { const SPEED_FEATURES * const sf = & cpi -> sf ; <S2SV_ModEnd> VP9_COMMON * const <S2SV_ModStart> -> common ; TileInfo * const tile_info = & tile_data -> tile_info ; <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> * ctx = & pc_tree -> none <S2SV_ModEnd> ; int i <S2SV_ModStart> ; BLOCK_SIZE subsize = bsize ; RD_COST this_rdc , sum_rdc , best_rdc <S2SV_ModEnd> ; int do_split <S2SV_ModStart> * tp_orig ; <S2SV_ModEnd> assert ( num_8x8_blocks_wide_lookup <S2SV_ModStart> ] ) ; vp9_rd_cost_init ( & sum_rdc ) ; vp9_rd_cost_reset ( & best_rdc ) ; best_rdc . rdcost = best_rd ; if ( sf -> <S2SV_ModEnd> auto_min_max_partition_size ) { <S2SV_ModStart> ( bsize <= x -> <S2SV_ModEnd> max_partition_size && bsize <S2SV_ModStart> && bsize >= x -> <S2SV_ModEnd> min_partition_size ) ; <S2SV_ModStart> ( bsize <= x -> <S2SV_ModEnd> max_partition_size && bsize <S2SV_ModStart> && bsize > x -> <S2SV_ModEnd> min_partition_size ) || <S2SV_ModStart> ( bsize <= x -> <S2SV_ModEnd> max_partition_size && bsize <S2SV_ModStart> && bsize > x -> <S2SV_ModEnd> min_partition_size ) || <S2SV_ModStart> &= bsize > x -> min_partition_size ; } if ( sf -> <S2SV_ModEnd> use_square_partition_only ) { <S2SV_ModStart> force_vert_split ; } ctx -> pred_pixel_ready = ! ( partition_vert_allowed || partition_horz_allowed || do_split ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( cpi , tile_data , x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> mi_col , & this_rdc , bsize , ctx ) ; ctx <S2SV_ModEnd> -> mic . <S2SV_ModStart> -> mbmi ; ctx -> mbmi_ext = * x -> mbmi_ext ; ctx -> skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; ctx -> skip = x -> skip ; if ( this_rdc . rate <S2SV_ModEnd> != INT_MAX ) <S2SV_ModStart> bsize ) ; this_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> PARTITION_NONE ] ; this_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , this_rdc . rate , this_rdc . dist ) ; if ( this_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> ) { int64_t <S2SV_ModStart> ) { int64_t dist_breakout_thr = sf -> partition_search_breakout_dist_thr ; int64_t rate_breakout_thr = sf -> partition_search_breakout_rate_thr ; dist_breakout_thr <S2SV_ModEnd> >>= 8 - <S2SV_ModStart> ] ) ; rate_breakout_thr *= num_pels_log2_lookup [ bsize ] ; best_rdc = this_rdc ; if ( bsize >= BLOCK_8X8 ) pc_tree -> partitioning = PARTITION_NONE <S2SV_ModEnd> ; if ( <S2SV_ModStart> . lossless && this_rdc . rate < rate_breakout_thr && this_rdc . dist < dist_breakout_thr <S2SV_ModEnd> ) { do_split <S2SV_ModStart> } } } } store_pred_mv ( x , ctx ) ; if ( do_split <S2SV_ModEnd> ) { int <S2SV_ModStart> bsize ) ; sum_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> [ PARTITION_SPLIT ] ; sum_rdc . rdcost = RDCOST ( x -> rdmult , x -> rddiv , sum_rdc . rate , sum_rdc . dist ) <S2SV_ModStart> < 4 && sum_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> ; ++ i <S2SV_ModStart> ) continue ; <S2SV_ModEnd> load_pred_mv ( x <S2SV_ModStart> ( cpi , td , tile_data <S2SV_ModEnd> , tp , <S2SV_ModStart> subsize , & this_rdc , 0 , best_rdc . rdcost - sum_rdc . rdcost , pc_tree -> split [ i ] ) ; if ( this_rdc . rate <S2SV_ModEnd> == INT_MAX ) <S2SV_ModStart> INT_MAX ) { vp9_rd_cost_reset ( & sum_rdc ) <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { sum_rdc . rate += this_rdc . rate ; sum_rdc . dist += this_rdc . dist ; sum_rdc . rdcost += this_rdc . rdcost ; } } if ( sum_rdc . rdcost < best_rdc . rdcost ) { best_rdc = sum_rdc ; pc_tree -> partitioning = PARTITION_SPLIT <S2SV_ModEnd> ; } else <S2SV_ModStart> { if ( sf -> <S2SV_ModEnd> less_rectangular_check ) do_rect <S2SV_ModStart> PARTITION_HORZ ) ; if ( sf -> adaptive_motion_search ) load_pred_mv ( x , ctx ) ; pc_tree -> horizontal [ 0 ] . pred_pixel_ready = 1 ; nonrd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , & sum_rdc , subsize , & pc_tree -> horizontal [ 0 ] ) ; pc_tree -> horizontal [ 0 ] . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> -> mbmi ; pc_tree -> horizontal [ 0 ] . mbmi_ext = * x -> mbmi_ext ; pc_tree -> horizontal [ 0 ] . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> horizontal [ 0 ] . skip = x -> skip ; if ( sum_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> && mi_row + <S2SV_ModStart> mi_rows ) { <S2SV_ModEnd> load_pred_mv ( x <S2SV_ModStart> ctx ) ; pc_tree -> horizontal [ 1 ] . pred_pixel_ready = 1 ; <S2SV_ModStart> ( cpi , tile_data , x <S2SV_ModEnd> , mi_row + <S2SV_ModStart> mi_col , & this_rdc , subsize , & pc_tree -> horizontal [ 1 ] ) ; pc_tree -> horizontal [ 1 ] . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> -> mbmi ; pc_tree -> horizontal [ 1 ] . mbmi_ext = * x -> mbmi_ext ; pc_tree -> horizontal [ 1 ] . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> horizontal [ 1 ] . skip = x -> skip ; if ( this_rdc . rate <S2SV_ModEnd> == INT_MAX ) <S2SV_ModStart> INT_MAX ) { vp9_rd_cost_reset ( & sum_rdc ) <S2SV_ModEnd> ; } else <S2SV_ModStart> bsize ) ; this_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> PARTITION_HORZ ] ; sum_rdc . rate += this_rdc . rate ; sum_rdc . dist += this_rdc . dist ; sum_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , sum_rdc . rate , sum_rdc . dist ) ; } } if ( sum_rdc . rdcost < best_rdc . rdcost ) { best_rdc = sum_rdc ; pc_tree -> partitioning = PARTITION_HORZ ; } else { pred_pixel_ready_reset ( pc_tree , bsize ) <S2SV_ModEnd> ; } } <S2SV_ModStart> PARTITION_VERT ) ; if ( sf -> adaptive_motion_search ) load_pred_mv ( x , ctx ) ; pc_tree -> vertical [ 0 ] . pred_pixel_ready = 1 ; nonrd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , & sum_rdc , subsize , & pc_tree -> vertical [ 0 ] ) ; pc_tree -> vertical [ 0 ] . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> -> mbmi ; pc_tree -> vertical [ 0 ] . mbmi_ext = * x -> mbmi_ext ; pc_tree -> vertical [ 0 ] . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> vertical [ 0 ] . skip = x -> skip ; if ( sum_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> && mi_col + <S2SV_ModStart> mi_cols ) { <S2SV_ModEnd> load_pred_mv ( x <S2SV_ModStart> ctx ) ; pc_tree -> vertical [ 1 ] . pred_pixel_ready = 1 ; <S2SV_ModStart> ( cpi , tile_data , x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> ms , & this_rdc , subsize , & pc_tree -> vertical [ 1 ] ) ; pc_tree -> vertical [ 1 ] . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> -> mbmi ; pc_tree -> vertical [ 1 ] . mbmi_ext = * x -> mbmi_ext ; pc_tree -> vertical [ 1 ] . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> vertical [ 1 ] . skip = x -> skip ; if ( this_rdc . rate <S2SV_ModEnd> == INT_MAX ) <S2SV_ModStart> INT_MAX ) { vp9_rd_cost_reset ( & sum_rdc ) <S2SV_ModEnd> ; } else <S2SV_ModStart> bsize ) ; sum_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> PARTITION_VERT ] ; sum_rdc . rate += this_rdc . rate ; sum_rdc . dist += this_rdc . dist ; sum_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , sum_rdc . rate , sum_rdc . dist ) ; } } if ( sum_rdc . rdcost < best_rdc . rdcost ) { best_rdc = sum_rdc ; pc_tree -> partitioning = PARTITION_VERT ; } else { pred_pixel_ready_reset ( pc_tree , bsize ) ; } } * rd_cost = best_rdc ; if ( best_rdc . rate <S2SV_ModEnd> == INT_MAX ) <S2SV_ModStart> == INT_MAX ) { vp9_rd_cost_reset ( rd_cost ) ; return ; } <S2SV_ModEnd> fill_mode_info_sb ( cm <S2SV_ModStart> , bsize , pc_tree ) ; if ( best_rdc . rate <S2SV_ModEnd> < INT_MAX && <S2SV_ModStart> < INT_MAX && best_rdc . dist <S2SV_ModEnd> < INT64_MAX && <S2SV_ModStart> BLOCK_64X64 ) ; encode_sb_rt ( cpi , td , tile_info , tp <S2SV_ModEnd> , mi_row , <S2SV_ModStart> , output_enabled , bsize , pc_tree <S2SV_ModEnd> ) ; } <S2SV_ModStart> bsize == BLOCK_64X64 && do_recon <S2SV_ModStart> ; assert ( best_rdc . rate <S2SV_ModEnd> < INT_MAX ) <S2SV_ModStart> ; assert ( best_rdc . dist <S2SV_ModEnd> < INT64_MAX )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12998\n\n```\nCWE-125 static int isis_print_extd_ip_reach ( netdissect_options * ndo , const uint8_t * tptr , const char * ident , uint16_t afi ) { char ident_buffer [ 20 ] ; uint8_t prefix [ sizeof ( struct in6_addr ) ] ; u_int metric , status_byte , bit_length , byte_length , sublen , processed , subtlvtype , subtlvlen ; if ( ! ND_TTEST2 ( * tptr , 4 ) ) return ( 0 ) ; metric = EXTRACT_32BITS ( tptr ) ; processed = 4 ; tptr += 4 ; if ( afi == AF_INET ) { if ( ! ND_TTEST2 ( * tptr , 1 ) ) return ( 0 ) ; status_byte = * ( tptr ++ ) ; bit_length = status_byte & 0x3f ; if ( bit_length > 32 ) { ND_PRINT ( ( ndo , \"%sIPv4<S2SV_blank>prefix:<S2SV_blank>bad<S2SV_blank>bit<S2SV_blank>length<S2SV_blank>%u\" , ident , bit_length ) ) ; return ( 0 ) ; } processed ++ ; } else if ( afi == AF_INET6 ) { <S2SV_StartBug> if ( ! ND_TTEST2 ( * tptr , 1 ) ) <S2SV_EndBug> return ( 0 ) ; status_byte = * ( tptr ++ ) ; bit_length = * ( tptr ++ ) ; if ( bit_length > 128 ) { ND_PRINT ( ( ndo , \"%sIPv6<S2SV_blank>prefix:<S2SV_blank>bad<S2SV_blank>bit<S2SV_blank>length<S2SV_blank>%u\" , ident , bit_length ) ) ; return ( 0 ) ; } processed += 2 ; } else return ( 0 ) ; byte_length = ( bit_length + 7 ) / 8 ; if ( ! ND_TTEST2 ( * tptr , byte_length ) ) return ( 0 ) ; memset ( prefix , 0 , sizeof prefix ) ; memcpy ( prefix , tptr , byte_length ) ; tptr += byte_length ; processed += byte_length ; if ( afi == AF_INET ) ND_PRINT ( ( ndo , \"%sIPv4<S2SV_blank>prefix:<S2SV_blank>%15s/%u\" , ident , ipaddr_string ( ndo , prefix ) , bit_length ) ) ; else if ( afi == AF_INET6 ) ND_PRINT ( ( ndo , \"%sIPv6<S2SV_blank>prefix:<S2SV_blank>%s/%u\" , ident , ip6addr_string ( ndo , prefix ) , bit_length ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Distribution:<S2SV_blank>%s,<S2SV_blank>Metric:<S2SV_blank>%u\" , ISIS_MASK_TLV_EXTD_IP_UPDOWN ( status_byte ) ? \"down\" : \"up\" , metric ) ) ; if ( afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV ( status_byte ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>sub-TLVs<S2SV_blank>present\" ) ) ; else if ( afi == AF_INET6 ) ND_PRINT ( ( ndo , \",<S2SV_blank>%s%s\" , ISIS_MASK_TLV_EXTD_IP6_IE ( status_byte ) ? \"External\" : \"Internal\" , ISIS_MASK_TLV_EXTD_IP6_SUBTLV ( status_byte ) ? \",<S2SV_blank>sub-TLVs<S2SV_blank>present\" : \"\" ) ) ; if ( ( afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV ( status_byte ) ) || ( afi == AF_INET6 && ISIS_MASK_TLV_EXTD_IP6_SUBTLV ( status_byte ) ) ) { if ( ! ND_TTEST2 ( * tptr , 1 ) ) return ( 0 ) ; sublen = * ( tptr ++ ) ; processed += sublen + 1 ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%u)\" , sublen ) ) ; while ( sublen > 0 ) { if ( ! ND_TTEST2 ( * tptr , 2 ) ) return ( 0 ) ; subtlvtype = * ( tptr ++ ) ; subtlvlen = * ( tptr ++ ) ; snprintf ( ident_buffer , sizeof ( ident_buffer ) , \"%s<S2SV_blank><S2SV_blank>\" , ident ) ; if ( ! isis_print_ip_reach_subtlv ( ndo , tptr , subtlvtype , subtlvlen , ident_buffer ) ) return ( 0 ) ; tptr += subtlvlen ; sublen -= ( subtlvlen + 2 ) ; } } return ( processed ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tptr , 2 <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 <S2SV_StartBug> static int scsi_disk_emulate_command ( SCSIDiskReq * r , uint8_t * outbuf ) <S2SV_EndBug> { SCSIRequest * req = & r -> req ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , req -> dev ) ; uint64_t nb_sectors ; int buflen = 0 ; switch ( req -> cmd . buf [ 0 ] ) { case TEST_UNIT_READY : if ( s -> tray_open || ! bdrv_is_inserted ( s -> bs ) ) goto not_ready ; break ; case INQUIRY : buflen = scsi_disk_emulate_inquiry ( req , outbuf ) ; if ( buflen < 0 ) goto illegal_request ; break ; case MODE_SENSE : case MODE_SENSE_10 : buflen = scsi_disk_emulate_mode_sense ( r , outbuf ) ; if ( buflen < 0 ) goto illegal_request ; break ; case READ_TOC : buflen = scsi_disk_emulate_read_toc ( req , outbuf ) ; if ( buflen < 0 ) goto illegal_request ; break ; case RESERVE : if ( req -> cmd . buf [ 1 ] & 1 ) goto illegal_request ; break ; case RESERVE_10 : if ( req -> cmd . buf [ 1 ] & 3 ) goto illegal_request ; break ; case RELEASE : if ( req -> cmd . buf [ 1 ] & 1 ) goto illegal_request ; break ; case RELEASE_10 : if ( req -> cmd . buf [ 1 ] & 3 ) goto illegal_request ; break ; case START_STOP : if ( scsi_disk_emulate_start_stop ( r ) < 0 ) { return - 1 ; } break ; case ALLOW_MEDIUM_REMOVAL : s -> tray_locked = req -> cmd . buf [ 4 ] & 1 ; bdrv_lock_medium ( s -> bs , req -> cmd . buf [ 4 ] & 1 ) ; break ; case READ_CAPACITY_10 : memset ( outbuf , 0 , 8 ) ; bdrv_get_geometry ( s -> bs , & nb_sectors ) ; if ( ! nb_sectors ) goto not_ready ; nb_sectors /= s -> cluster_size ; nb_sectors -- ; s -> max_lba = nb_sectors ; if ( nb_sectors > UINT32_MAX ) nb_sectors = UINT32_MAX ; outbuf [ 0 ] = ( nb_sectors >> 24 ) & 0xff ; outbuf [ 1 ] = ( nb_sectors >> 16 ) & 0xff ; outbuf [ 2 ] = ( nb_sectors >> 8 ) & 0xff ; outbuf [ 3 ] = nb_sectors & 0xff ; outbuf [ 4 ] = 0 ; outbuf [ 5 ] = 0 ; outbuf [ 6 ] = s -> cluster_size * 2 ; outbuf [ 7 ] = 0 ; buflen = 8 ; break ; case GET_CONFIGURATION : memset ( outbuf , 0 , 8 ) ; outbuf [ 7 ] = 8 ; buflen = 8 ; break ; case SERVICE_ACTION_IN_16 : if ( ( req -> cmd . buf [ 1 ] & 31 ) == SAI_READ_CAPACITY_16 ) { DPRINTF ( \"SAI<S2SV_blank>READ<S2SV_blank>CAPACITY(16)\\\\n\" ) ; memset ( outbuf , 0 , req -> cmd . xfer ) ; bdrv_get_geometry ( s -> bs , & nb_sectors ) ; if ( ! nb_sectors ) goto not_ready ; nb_sectors /= s -> cluster_size ; nb_sectors -- ; s -> max_lba = nb_sectors ; outbuf [ 0 ] = ( nb_sectors >> 56 ) & 0xff ; outbuf [ 1 ] = ( nb_sectors >> 48 ) & 0xff ; outbuf [ 2 ] = ( nb_sectors >> 40 ) & 0xff ; outbuf [ 3 ] = ( nb_sectors >> 32 ) & 0xff ; outbuf [ 4 ] = ( nb_sectors >> 24 ) & 0xff ; outbuf [ 5 ] = ( nb_sectors >> 16 ) & 0xff ; outbuf [ 6 ] = ( nb_sectors >> 8 ) & 0xff ; outbuf [ 7 ] = nb_sectors & 0xff ; outbuf [ 8 ] = 0 ; outbuf [ 9 ] = 0 ; outbuf [ 10 ] = s -> cluster_size * 2 ; outbuf [ 11 ] = 0 ; outbuf [ 12 ] = 0 ; outbuf [ 13 ] = get_physical_block_exp ( & s -> qdev . conf ) ; if ( s -> qdev . conf . discard_granularity ) { outbuf [ 14 ] = 0x80 ; } buflen = req -> cmd . xfer ; break ; } DPRINTF ( \"Unsupported<S2SV_blank>Service<S2SV_blank>Action<S2SV_blank>In\\\\n\" ) ; goto illegal_request ; case VERIFY_10 : break ; default : scsi_check_condition ( r , SENSE_CODE ( INVALID_OPCODE ) ) ; return - 1 ; } return buflen ; not_ready : if ( s -> tray_open || ! bdrv_is_inserted ( s -> bs ) ) { scsi_check_condition ( r , SENSE_CODE ( NO_MEDIUM ) ) ; } else { scsi_check_condition ( r , SENSE_CODE ( LUN_NOT_READY ) ) ; } return - 1 ; illegal_request : if ( r -> req . status == - 1 ) { scsi_check_condition ( r , SENSE_CODE ( INVALID_FIELD ) ) ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SCSIDiskReq * r ) { SCSIRequest * req = & r -> req ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , req -> dev ) ; uint64_t nb_sectors ; <S2SV_ModEnd> uint8_t * outbuf <S2SV_ModStart> uint8_t * outbuf ; int buflen = 0 ; if ( ! r -> iov . iov_base ) { if ( req -> cmd . xfer > 65536 ) { goto illegal_request ; } r -> buflen = MAX ( 4096 , req -> cmd . xfer ) ; r -> iov . iov_base = qemu_blockalign ( s -> bs , r -> buflen ) ; } outbuf = r -> iov . iov_base <S2SV_ModEnd> ; switch (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27208\n\n```\nCWE-326 void flash_option_bytes_init ( int boot_from_dfu ) { uint32_t val = 0xfffff8aa ; if ( boot_from_dfu ) { val &= ~ ( 1 << 27 ) ; } else { if ( solo_is_locked ( ) ) { val = 0xfffff8cc ; } } val &= ~ ( 1 << 26 ) ; val &= ~ ( 1 << 25 ) ; val &= ~ ( 1 << 24 ) ; if ( FLASH -> OPTR == val ) { return ; } __disable_irq ( ) ; while ( FLASH -> SR & ( 1 << 16 ) ) ; flash_unlock ( ) ; if ( FLASH -> CR & ( 1 << 30 ) ) { FLASH -> OPTKEYR = 0x08192A3B ; FLASH -> OPTKEYR = 0x4C5D6E7F ; } FLASH -> OPTR = val ; FLASH -> CR |= ( 1 << 17 ) ; while ( FLASH -> SR & ( 1 << 16 ) ) ; flash_lock ( ) ; <S2SV_StartBug> __enable_irq ( ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; FLASH -> CR |= FLASH_CR_OBL_LAUNCH ; while ( true <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19481\n\n```\nCWE-119 static int cac_read_binary ( sc_card_t * card , unsigned int idx , unsigned char * buf , size_t count , unsigned long flags ) { cac_private_data_t * priv = CAC_DATA ( card ) ; int r = 0 ; u8 * val = NULL ; u8 * cert_ptr ; <S2SV_StartBug> size_t val_len ; <S2SV_EndBug> size_t len , cert_len ; u8 cert_type ; SC_FUNC_CALLED ( card -> ctx , SC_LOG_DEBUG_VERBOSE ) ; if ( priv -> cached ) { sc_log ( card -> ctx , \"returning<S2SV_blank>cached<S2SV_blank>value<S2SV_blank>idx=%d<S2SV_blank>count=%\" SC_FORMAT_LEN_SIZE_T \"u\" , idx , count ) ; if ( idx > priv -> cache_buf_len ) { LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_FILE_END_REACHED ) ; } len = MIN ( count , priv -> cache_buf_len - idx ) ; memcpy ( buf , & priv -> cache_buf [ idx ] , len ) ; LOG_FUNC_RETURN ( card -> ctx , len ) ; } sc_log ( card -> ctx , \"clearing<S2SV_blank>cache<S2SV_blank>idx=%d<S2SV_blank>count=%\" SC_FORMAT_LEN_SIZE_T \"u\" , idx , count ) ; free ( priv -> cache_buf ) ; priv -> cache_buf = NULL ; priv -> cache_buf_len = 0 ; r = cac_cac1_get_certificate ( card , & val , & val_len ) ; if ( r < 0 ) goto done ; if ( val_len < 1 ) { r = SC_ERROR_INVALID_DATA ; goto done ; } cert_type = val [ 0 ] ; cert_ptr = val + 1 ; cert_len = val_len - 1 ; if ( ( cert_type & 0x3 ) == 1 ) { # ifdef ENABLE_ZLIB r = sc_decompress_alloc ( & priv -> cache_buf , & priv -> cache_buf_len , cert_ptr , cert_len , COMPRESSION_AUTO ) ; # else sc_log ( card -> ctx , \"CAC<S2SV_blank>compression<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>no<S2SV_blank>zlib\" ) ; r = SC_ERROR_NOT_SUPPORTED ; # endif if ( r ) goto done ; } else if ( cert_len > 0 ) { priv -> cache_buf = malloc ( cert_len ) ; if ( priv -> cache_buf == NULL ) { r = SC_ERROR_OUT_OF_MEMORY ; goto done ; } priv -> cache_buf_len = cert_len ; memcpy ( priv -> cache_buf , cert_ptr , cert_len ) ; } priv -> cached = 1 ; len = MIN ( count , priv -> cache_buf_len - idx ) ; if ( len && priv -> cache_buf ) memcpy ( buf , & priv -> cache_buf [ idx ] , len ) ; r = len ; done : if ( val ) free ( val ) ; LOG_FUNC_RETURN ( card -> ctx , r ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t val_len = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static int link_pipe ( struct pipe_inode_info * ipipe , struct pipe_inode_info * opipe , size_t len , unsigned int flags ) { struct pipe_buffer * ibuf , * obuf ; int ret = 0 , i = 0 , nbuf ; pipe_double_lock ( ipipe , opipe ) ; do { if ( ! opipe -> readers ) { send_sig ( SIGPIPE , current , 0 ) ; if ( ! ret ) ret = - EPIPE ; break ; } if ( i >= ipipe -> nrbufs || opipe -> nrbufs >= opipe -> buffers ) break ; ibuf = ipipe -> bufs + ( ( ipipe -> curbuf + i ) & ( ipipe -> buffers - 1 ) ) ; nbuf = ( opipe -> curbuf + opipe -> nrbufs ) & ( opipe -> buffers - 1 ) ; <S2SV_StartBug> pipe_buf_get ( ipipe , ibuf ) ; <S2SV_EndBug> obuf = opipe -> bufs + nbuf ; * obuf = * ibuf ; obuf -> flags &= ~ PIPE_BUF_FLAG_GIFT ; if ( obuf -> len > len ) obuf -> len = len ; opipe -> nrbufs ++ ; ret += obuf -> len ; len -= obuf -> len ; i ++ ; } while ( len ) ; if ( ! ret && ipipe -> waiting_writers && ( flags & SPLICE_F_NONBLOCK ) ) ret = - EAGAIN ; pipe_unlock ( ipipe ) ; pipe_unlock ( opipe ) ; if ( ret > 0 ) wakeup_pipe_readers ( opipe ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( ! <S2SV_ModStart> , ibuf ) ) { if ( ret == 0 ) ret = - EFAULT ; break ; } <S2SV_ModEnd> obuf = opipe\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6546\n\n```\nCWE-200 static int pvc_getname ( struct socket * sock , struct sockaddr * sockaddr , int * sockaddr_len , int peer ) { struct sockaddr_atmpvc * addr ; struct atm_vcc * vcc = ATM_SD ( sock ) ; if ( ! vcc -> dev || ! test_bit ( ATM_VF_ADDR , & vcc -> flags ) ) return - ENOTCONN ; * sockaddr_len = sizeof ( struct sockaddr_atmpvc ) ; addr = ( struct sockaddr_atmpvc * ) sockaddr ; <S2SV_StartBug> addr -> sap_family = AF_ATMPVC ; <S2SV_EndBug> addr -> sap_addr . itf = vcc -> dev -> number ; addr -> sap_addr . vpi = vcc -> vpi ; addr -> sap_addr . vci = vcc -> vci ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) sockaddr ; memset ( addr , 0 , sizeof ( * addr ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-79(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20376\n\n```\nCWE-79 void send_file_direct ( char * file_name ) { int fh , i , length , delta ; char str [ MAX_PATH_LENGTH ] , dir [ MAX_PATH_LENGTH ] , charset [ 80 ] ; getcwd ( dir , sizeof ( dir ) ) ; fh = open ( file_name , O_RDONLY | O_BINARY ) ; if ( fh > 0 ) { lseek ( fh , 0 , SEEK_END ) ; length = TELL ( fh ) ; lseek ( fh , 0 , SEEK_SET ) ; rsprintf ( \"HTTP/1.1<S2SV_blank>200<S2SV_blank>Document<S2SV_blank>follows\\\\r\\\\n\" ) ; rsprintf ( \"Server:<S2SV_blank>ELOG<S2SV_blank>HTTP<S2SV_blank>%s-%s\\\\r\\\\n\" , VERSION , git_revision ( ) ) ; rsprintf ( \"Accept-Ranges:<S2SV_blank>bytes\\\\r\\\\n\" ) ; if ( isparam ( \"thumb\" ) ) { rsprintf ( \"Pragma:<S2SV_blank>no-cache\\\\r\\\\n\" ) ; rsprintf ( \"Cache-control:<S2SV_blank>private,<S2SV_blank>max-age=0,<S2SV_blank>no-cache,<S2SV_blank>no-store\\\\r\\\\n\" ) ; } else { rsprintf ( \"Cache-control:<S2SV_blank>public,<S2SV_blank>max-age=86400\\\\r\\\\n\" ) ; } if ( keep_alive ) { rsprintf ( \"Connection:<S2SV_blank>Keep-Alive\\\\r\\\\n\" ) ; rsprintf ( \"Keep-Alive:<S2SV_blank>timeout=60,<S2SV_blank>max=10\\\\r\\\\n\" ) ; } for ( i = 0 ; i < ( int ) strlen ( file_name ) ; i ++ ) str [ i ] = toupper ( file_name [ i ] ) ; str [ i ] = 0 ; for ( i = 0 ; filetype [ i ] . ext [ 0 ] ; i ++ ) if ( chkext ( str , filetype [ i ] . ext ) ) break ; if ( ! getcfg ( \"global\" , \"charset\" , charset , sizeof ( charset ) ) ) strcpy ( charset , DEFAULT_HTTP_CHARSET ) ; if ( filetype [ i ] . ext [ 0 ] ) { if ( strncmp ( filetype [ i ] . type , \"text\" , 4 ) == 0 ) rsprintf ( \"Content-Type:<S2SV_blank>%s;charset=%s\\\\r\\\\n\" , filetype [ i ] . type , charset ) ; <S2SV_StartBug> else <S2SV_EndBug> rsprintf ( \"Content-Type:<S2SV_blank>%s\\\\r\\\\n\" , filetype [ i ] . type ) ; } else if ( is_ascii ( file_name ) ) rsprintf ( \"Content-Type:<S2SV_blank>text/plain;charset=%s\\\\r\\\\n\" , charset ) ; else rsprintf ( \"Content-Type:<S2SV_blank>application/octet-stream;charset=%s\\\\r\\\\n\" , charset ) ; rsprintf ( \"Content-Length:<S2SV_blank>%d\\\\r\\\\n\\\\r\\\\n\" , length ) ; if ( length > return_buffer_size - ( int ) strlen ( return_buffer ) ) { delta = length - ( return_buffer_size - strlen ( return_buffer ) ) + 1000 ; return_buffer = xrealloc ( return_buffer , return_buffer_size + delta ) ; memset ( return_buffer + return_buffer_size , 0 , delta ) ; return_buffer_size += delta ; } return_length = strlen ( return_buffer ) + length ; read ( fh , return_buffer + strlen ( return_buffer ) , length ) ; close ( fh ) ; } else { char encodedname [ 256 ] ; show_html_header ( NULL , FALSE , \"404<S2SV_blank>Not<S2SV_blank>Found\" , TRUE , FALSE , NULL , FALSE , 0 ) ; rsprintf ( \"<body><h1>Not<S2SV_blank>Found</h1>\\\\r\\\\n\" ) ; rsprintf ( \"The<S2SV_blank>requested<S2SV_blank>file<S2SV_blank><b>\" ) ; strencode2 ( encodedname , file_name , sizeof ( encodedname ) ) ; if ( strchr ( file_name , DIR_SEPARATOR ) ) rsprintf ( \"%s\" , encodedname ) ; else rsprintf ( \"%s%c%s\" , dir , DIR_SEPARATOR , encodedname ) ; rsprintf ( \"</b><S2SV_blank>was<S2SV_blank>not<S2SV_blank>found<S2SV_blank>on<S2SV_blank>this<S2SV_blank>server<p>\\\\r\\\\n\" ) ; rsprintf ( \"<hr><address>ELOG<S2SV_blank>version<S2SV_blank>%s</address></body></html>\\\\r\\\\n\\\\r\\\\n\" , VERSION ) ; return_length = strlen_retbuf ; keep_alive = FALSE ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> charset ) ; else if ( strcmp ( filetype [ i ] . ext , \".SVG\" ) == 0 ) { rsprintf ( \"Content-Type:<S2SV_blank>%s\\\\r\\\\n\" , filetype [ i ] . type ) ; if ( strrchr ( file_name , '/' ) ) strlcpy ( str , strrchr ( file_name , '/' ) + 1 , sizeof ( str ) ) ; else strlcpy ( str , file_name , sizeof ( str ) ) ; if ( str [ 6 ] == '_' && str [ 13 ] == '_' ) rsprintf ( \"Content-Disposition:<S2SV_blank>attachment;<S2SV_blank>filename=\\\\\"%s\\\\\"\\\\r\\\\n\" , str + 14 ) ; else rsprintf ( \"Content-Disposition:<S2SV_blank>attachment;<S2SV_blank>filename=\\\\\"%s\\\\\"\\\\r\\\\n\" , str ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2058\n\n```\nCWE-119 static int host_start ( struct ci13xxx * ci ) { struct usb_hcd * hcd ; struct ehci_hcd * ehci ; int ret ; if ( usb_disabled ( ) ) return - ENODEV ; hcd = usb_create_hcd ( & ci_ehci_hc_driver , ci -> dev , dev_name ( ci -> dev ) ) ; if ( ! hcd ) return - ENOMEM ; dev_set_drvdata ( ci -> dev , ci ) ; hcd -> rsrc_start = ci -> hw_bank . phys ; hcd -> rsrc_len = ci -> hw_bank . size ; hcd -> regs = ci -> hw_bank . abs ; hcd -> has_tt = 1 ; hcd -> power_budget = ci -> platdata -> power_budget ; hcd -> phy = ci -> transceiver ; ehci = hcd_to_ehci ( hcd ) ; ehci -> caps = ci -> hw_bank . cap ; ehci -> has_hostpc = ci -> hw_bank . lpm ; ret = usb_add_hcd ( hcd , 0 , 0 ) ; if ( ret ) usb_put_hcd ( hcd ) ; else ci -> hcd = hcd ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = hcd ; if ( ci -> platdata -> flags & CI13XXX_DISABLE_STREAMING ) hw_write ( ci , OP_USBMODE , USBMODE_CI_SDIS , USBMODE_CI_SDIS ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10161\n\n```\nCWE-125 static inline long object_common1 ( UNSERIALIZE_PARAMETER , zend_class_entry * ce ) { <S2SV_StartBug> long elements ; <S2SV_EndBug> elements = parse_iv2 ( ( * p ) + 2 , p ) ; ( * p ) += 2 ; if ( ce -> serialize == NULL ) { object_init_ex ( * rval , ce ) ; } else { zend_error ( E_WARNING , \"Erroneous<S2SV_blank>data<S2SV_blank>format<S2SV_blank>for<S2SV_blank>unserializing<S2SV_blank>\\'%s\\'\" , ce -> name ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } return elements ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long elements ; if ( * p >= max - 2 ) { zend_error ( E_WARNING , \"Bad<S2SV_blank>unserialize<S2SV_blank>data\" ) ; return - 1 ; } <S2SV_ModStart> ) ; return - 1 <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20460\n\n```\nCWE-119 static bool parseOperands ( char * str , ArmOp * op ) { char * t = strdup ( str ) ; int operand = 0 ; char * token = t ; char * x ; int imm_count = 0 ; int mem_opt = 0 ; if ( ! token ) { return false ; } while ( token ) { char * next = strchr ( token , ',' ) ; if ( next ) { * next ++ = 0 ; } while ( token [ 0 ] == '<S2SV_blank>' ) { <S2SV_StartBug> token ++ ; <S2SV_EndBug> } op -> operands [ operand ] . type = ARM_NOTYPE ; op -> operands [ operand ] . reg_type = ARM_UNDEFINED ; op -> operands [ operand ] . shift = ARM_NO_SHIFT ; while ( token [ 0 ] == '<S2SV_blank>' || token [ 0 ] == '[' || token [ 0 ] == ']' ) { token ++ ; } if ( ! strncmp ( token , \"lsl\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_LSL ; } else if ( ! strncmp ( token , \"lsr\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_LSR ; } else if ( ! strncmp ( token , \"asr\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_ASR ; } if ( op -> operands [ operand ] . shift != ARM_NO_SHIFT ) { op -> operands_count ++ ; op -> operands [ operand ] . shift_amount = r_num_math ( NULL , token + 4 ) ; if ( op -> operands [ operand ] . shift_amount > 63 ) { return false ; } operand ++ ; token = next ; continue ; } switch ( token [ 0 ] ) { case 'x' : x = strchr ( token , ',' ) ; if ( x ) { x [ 0 ] = '\\\\0' ; } op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_REG64 ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; if ( op -> operands [ operand ] . reg > 31 ) { return false ; } break ; case 'w' : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_REG32 ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; if ( op -> operands [ operand ] . reg > 31 ) { return false ; } break ; case 'v' : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_FP ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; break ; case 's' : case 'S' : if ( token [ 1 ] == 'P' || token [ 1 ] == 'p' ) { int i ; for ( i = 0 ; msr_const [ i ] . name ; i ++ ) { if ( ! r_str_ncasecmp ( token , msr_const [ i ] . name , strlen ( msr_const [ i ] . name ) ) ) { op -> operands [ operand ] . sp_val = msr_const [ i ] . val ; break ; } } op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_SP | ARM_REG64 ; op -> operands [ operand ] . reg = 31 ; break ; } mem_opt = get_mem_option ( token ) ; if ( mem_opt != - 1 ) { op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_MEM_OPT ; op -> operands [ operand ] . mem_option = mem_opt ; } break ; case 'L' : case 'l' : case 'I' : case 'i' : case 'N' : case 'n' : case 'O' : case 'o' : case 'p' : case 'P' : mem_opt = get_mem_option ( token ) ; if ( mem_opt != - 1 ) { op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_MEM_OPT ; op -> operands [ operand ] . mem_option = mem_opt ; } break ; case '-' : op -> operands [ operand ] . sign = - 1 ; default : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_CONSTANT ; op -> operands [ operand ] . immediate = r_num_math ( NULL , token ) ; imm_count ++ ; break ; } token = next ; operand ++ ; if ( operand > MAX_OPERANDS ) { free ( t ) ; return false ; } } free ( t ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { token ++ ; } if ( operand >= MAX_OPERANDS ) { eprintf ( \"Too<S2SV_blank>many<S2SV_blank>operands\\\\n\" ) ; return false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0835\n\n```\nCWE-119 <S2SV_StartBug> void impeg2d_dec_p_mb_params ( dec_state_t * ps_dec ) <S2SV_EndBug> { stream_t * ps_stream = & ps_dec -> s_bit_stream ; UWORD16 u2_mb_addr_incr ; UWORD16 u2_total_len ; UWORD16 u2_len ; UWORD16 u2_mb_type ; UWORD32 u4_next_word ; const dec_mb_params_t * ps_dec_mb_params ; if ( impeg2d_bit_stream_nxt ( ps_stream , 1 ) == 1 ) { impeg2d_bit_stream_flush ( ps_stream , 1 ) ; } else { u2_mb_addr_incr = impeg2d_get_mb_addr_incr ( ps_stream ) ; if ( 0 == ps_dec -> u2_first_mb ) { if ( ps_dec -> u2_is_mpeg2 && ( ( ps_dec -> u2_mb_x + u2_mb_addr_incr ) > ps_dec -> u2_num_horiz_mb ) ) { u2_mb_addr_incr = ps_dec -> u2_num_horiz_mb - ps_dec -> u2_mb_x ; } impeg2d_dec_skip_mbs ( ps_dec , ( UWORD16 ) ( u2_mb_addr_incr - 1 ) ) ; } } u4_next_word = ( UWORD16 ) impeg2d_bit_stream_nxt ( ps_stream , 16 ) ; { u2_mb_type = ps_dec -> pu2_mb_type [ BITS ( ( UWORD16 ) u4_next_word , 15 , 10 ) ] ; u2_len = BITS ( u2_mb_type , 15 , 8 ) ; u2_total_len = u2_len ; u4_next_word = ( UWORD16 ) LSW ( ( UWORD16 ) u4_next_word << u2_len ) ; } { if ( ( u2_mb_type & MB_FORW_OR_BACK ) && ps_dec -> u2_read_motion_type ) { WORD32 i4_motion_type ; ps_dec -> u2_motion_type = BITS ( ( UWORD16 ) u4_next_word , 15 , 14 ) ; u2_total_len += MB_MOTION_TYPE_LEN ; u4_next_word = ( UWORD16 ) LSW ( ( UWORD16 ) u4_next_word << MB_MOTION_TYPE_LEN ) ; i4_motion_type = ps_dec -> u2_motion_type ; if ( ( i4_motion_type == 0 ) || ( i4_motion_type == 4 ) || ( i4_motion_type > 7 ) ) { i4_motion_type = 1 ; } } } { if ( ( u2_mb_type & MB_CODED ) && ps_dec -> u2_read_dct_type ) { ps_dec -> u2_field_dct = BIT ( ( UWORD16 ) u4_next_word , 15 ) ; u2_total_len += MB_DCT_TYPE_LEN ; u4_next_word = ( UWORD16 ) LSW ( ( UWORD16 ) u4_next_word << MB_DCT_TYPE_LEN ) ; } } if ( u2_mb_type & MB_QUANT ) { UWORD16 u2_quant_scale_code ; u2_quant_scale_code = BITS ( ( UWORD16 ) u4_next_word , 15 , 11 ) ; ps_dec -> u1_quant_scale = ( ps_dec -> u2_q_scale_type ) ? gau1_impeg2_non_linear_quant_scale [ u2_quant_scale_code ] : ( u2_quant_scale_code << 1 ) ; u2_total_len += MB_QUANT_SCALE_CODE_LEN ; } impeg2d_bit_stream_flush ( ps_stream , u2_total_len ) ; ps_dec -> u2_coded_mb = ( UWORD16 ) ( u2_mb_type & MB_CODED ) ; if ( u2_mb_type & MB_FORW_OR_BACK ) { UWORD16 refPic = ! ( u2_mb_type & MB_MV_FORW ) ; UWORD16 index = ( ps_dec -> u2_motion_type ) ; ps_dec -> u2_prev_intra_mb = 0 ; ps_dec -> e_mb_pred = ( e_pred_direction_t ) refPic ; ps_dec_mb_params = & ps_dec -> ps_func_forw_or_back [ index ] ; ps_dec -> s_mb_type = ps_dec_mb_params -> s_mb_type ; <S2SV_StartBug> ps_dec_mb_params -> pf_func_mb_params ( ps_dec ) ; <S2SV_EndBug> } else if ( u2_mb_type & MB_TYPE_INTRA ) { ps_dec -> u2_prev_intra_mb = 1 ; impeg2d_dec_intra_mb ( ps_dec ) ; } else { ps_dec -> u2_prev_intra_mb = 0 ; ps_dec -> e_mb_pred = FORW ; ps_dec -> u2_motion_type = 0 ; impeg2d_dec_0mv_coded_mb ( ps_dec ) ; } if ( ( u2_mb_type & MB_TYPE_INTRA ) ) { ps_dec -> u2_cbp = 0x3f ; ps_dec -> u2_prev_intra_mb = 1 ; } else { ps_dec -> u2_prev_intra_mb = 0 ; ps_dec -> u2_def_dc_pred [ Y_LUMA ] = 128 << ps_dec -> u2_intra_dc_precision ; ps_dec -> u2_def_dc_pred [ U_CHROMA ] = 128 << ps_dec -> u2_intra_dc_precision ; ps_dec -> u2_def_dc_pred [ V_CHROMA ] = 128 << ps_dec -> u2_intra_dc_precision ; if ( ( ps_dec -> u2_coded_mb ) ) { UWORD16 cbpValue ; cbpValue = gau2_impeg2d_cbp_code [ impeg2d_bit_stream_nxt ( ps_stream , MB_CBP_LEN ) ] ; ps_dec -> u2_cbp = cbpValue & 0xFF ; impeg2d_bit_stream_flush ( ps_stream , ( cbpValue >> 8 ) & 0x0FF ) ; } else { ps_dec -> u2_cbp = 0 ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> WORD32 <S2SV_ModEnd> impeg2d_dec_p_mb_params ( dec_state_t <S2SV_ModStart> -> s_mb_type ; if ( NULL == ps_dec_mb_params -> pf_func_mb_params ) return - 1 ; <S2SV_ModStart> ; } } return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_fixed_partitioning ( VP9_COMP * cpi , const TileInfo * const tile , MODE_INFO * * mi_8x8 , int mi_row , int mi_col , BLOCK_SIZE bsize ) { VP9_COMMON * const cm = & cpi -> common ; const int mis = cm -> mi_stride ; <S2SV_StartBug> int row8x8_remaining = tile -> mi_row_end - mi_row ; <S2SV_EndBug> <S2SV_StartBug> int col8x8_remaining = tile -> mi_col_end - mi_col ; <S2SV_EndBug> int block_row , block_col ; MODE_INFO * mi_upper_left = cm -> mi + mi_row * mis + mi_col ; int bh = num_8x8_blocks_high_lookup [ bsize ] ; int bw = num_8x8_blocks_wide_lookup [ bsize ] ; assert ( ( row8x8_remaining > 0 ) && ( col8x8_remaining > 0 ) ) ; if ( ( col8x8_remaining >= MI_BLOCK_SIZE ) && ( row8x8_remaining >= MI_BLOCK_SIZE ) ) { for ( block_row = 0 ; block_row < MI_BLOCK_SIZE ; block_row += bh ) { for ( block_col = 0 ; block_col < MI_BLOCK_SIZE ; block_col += bw ) { int index = block_row * mis + block_col ; mi_8x8 [ index ] = mi_upper_left + index ; mi_8x8 [ index ] -> mbmi . sb_type = bsize ; } } } else { <S2SV_StartBug> for ( block_row = 0 ; block_row < MI_BLOCK_SIZE ; block_row += bh ) { <S2SV_EndBug> for ( block_col = 0 ; block_col < MI_BLOCK_SIZE ; block_col += bw ) { int index = block_row * mis + block_col ; bsize = find_partition_size ( bsize , ( row8x8_remaining - block_row ) , ( col8x8_remaining - block_col ) , & bh , & bw ) ; mi_8x8 [ index ] = mi_upper_left + index ; mi_8x8 [ index ] -> mbmi . sb_type = bsize ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mi_stride ; const <S2SV_ModStart> - mi_row ; const <S2SV_ModStart> } else { set_partial_b64x64_partition ( mi_upper_left , mis , bh , bw , row8x8_remaining , col8x8_remaining , bsize , mi_8x8 ) ; <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1182\n\n```\nCWE-000 SYSCALL_DEFINE3 ( rt_sigqueueinfo , pid_t , pid , int , sig , siginfo_t __user * , uinfo ) { siginfo_t info ; if ( copy_from_user ( & info , uinfo , sizeof ( siginfo_t ) ) ) return - EFAULT ; <S2SV_StartBug> if ( info . si_code >= 0 ) <S2SV_EndBug> <S2SV_StartBug> return - EPERM ; <S2SV_EndBug> info . si_signo = sig ; return kill_proc_info ( sig , & info , pid ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> info . si_code != SI_QUEUE ) { WARN_ON_ONCE ( info . si_code < 0 ) ; <S2SV_ModEnd> return - EPERM <S2SV_ModStart> - EPERM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3886\n\n```\nCWE-295 static void inf_gtk_certificate_manager_certificate_func ( InfXmppConnection * connection , gnutls_session_t session , InfCertificateChain * chain , gpointer user_data ) { InfGtkCertificateManager * manager ; InfGtkCertificateManagerPrivate * priv ; InfGtkCertificateDialogFlags flags ; gnutls_x509_crt_t presented_cert ; gnutls_x509_crt_t known_cert ; gchar * hostname ; gboolean match_hostname ; gboolean issuer_known ; gnutls_x509_crt_t root_cert ; int ret ; unsigned int verify ; GHashTable * table ; gboolean cert_equal ; time_t expiration_time ; InfGtkCertificateManagerQuery * query ; gchar * text ; GtkWidget * vbox ; GtkWidget * label ; GError * error ; manager = INF_GTK_CERTIFICATE_MANAGER ( user_data ) ; priv = INF_GTK_CERTIFICATE_MANAGER_PRIVATE ( manager ) ; g_object_get ( G_OBJECT ( connection ) , \"remote-hostname\" , & hostname , NULL ) ; presented_cert = inf_certificate_chain_get_own_certificate ( chain ) ; match_hostname = gnutls_x509_crt_check_hostname ( presented_cert , hostname ) ; ret = gnutls_certificate_verify_peers2 ( session , & verify ) ; error = NULL ; if ( ret != GNUTLS_E_SUCCESS ) inf_gnutls_set_error ( & error , ret ) ; if ( error == NULL ) { issuer_known = TRUE ; if ( verify & GNUTLS_CERT_SIGNER_NOT_FOUND ) { issuer_known = FALSE ; root_cert = inf_certificate_chain_get_root_certificate ( chain ) ; ret = gnutls_x509_crt_list_verify ( inf_certificate_chain_get_raw ( chain ) , inf_certificate_chain_get_n_certificates ( chain ) , & root_cert , 1 , NULL , 0 , GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT , & verify ) ; if ( ret != GNUTLS_E_SUCCESS ) inf_gnutls_set_error ( & error , ret ) ; <S2SV_StartBug> else if ( verify & GNUTLS_CERT_INVALID ) <S2SV_EndBug> inf_gnutls_certificate_verification_set_error ( & error , verify ) ; <S2SV_StartBug> } <S2SV_EndBug> } table = NULL ; if ( error == NULL ) { known_cert = NULL ; if ( ! match_hostname || ! issuer_known ) { table = inf_gtk_certificate_manager_ref_known_hosts ( manager , & error ) ; if ( table != NULL ) known_cert = g_hash_table_lookup ( table , hostname ) ; } } flags = 0 ; if ( error == NULL ) { if ( known_cert != NULL ) { cert_equal = inf_gtk_certificate_manager_compare_fingerprint ( known_cert , presented_cert , & error ) ; if ( error == NULL && cert_equal == FALSE ) { if ( ! match_hostname ) flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_HOSTNAME_MISMATCH ; if ( ! issuer_known ) flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_ISSUER_NOT_KNOWN ; flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_UNEXPECTED ; expiration_time = gnutls_x509_crt_get_expiration_time ( known_cert ) ; if ( expiration_time != ( time_t ) ( - 1 ) ) { expiration_time -= INF_GTK_CERTIFICATE_MANAGER_EXPIRATION_TOLERANCE ; if ( time ( NULL ) > expiration_time ) { flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_OLD_EXPIRED ; } } } } else { if ( ! match_hostname ) flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_HOSTNAME_MISMATCH ; if ( ! issuer_known ) flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_ISSUER_NOT_KNOWN ; } } if ( error == NULL ) { if ( flags == 0 ) { if ( match_hostname && issuer_known ) { if ( table != NULL && g_hash_table_remove ( table , hostname ) == TRUE ) { inf_gtk_certificate_manager_write_known_hosts_with_warning ( manager , table ) ; } } inf_xmpp_connection_certificate_verify_continue ( connection ) ; } else { query = g_slice_new ( InfGtkCertificateManagerQuery ) ; query -> manager = manager ; query -> known_hosts = table ; query -> connection = connection ; query -> dialog = inf_gtk_certificate_dialog_new ( priv -> parent_window , 0 , flags , hostname , chain ) ; query -> certificate_chain = chain ; table = NULL ; g_object_ref ( query -> connection ) ; inf_certificate_chain_ref ( chain ) ; g_signal_connect ( G_OBJECT ( connection ) , \"notify::status\" , G_CALLBACK ( inf_gtk_certificate_manager_notify_status_cb ) , query ) ; g_signal_connect ( G_OBJECT ( query -> dialog ) , \"response\" , G_CALLBACK ( inf_gtk_certificate_manager_response_cb ) , query ) ; gtk_dialog_add_button ( GTK_DIALOG ( query -> dialog ) , _ ( \"_Cancel<S2SV_blank>connection\" ) , GTK_RESPONSE_REJECT ) ; gtk_dialog_add_button ( GTK_DIALOG ( query -> dialog ) , _ ( \"C_ontinue<S2SV_blank>connection\" ) , GTK_RESPONSE_ACCEPT ) ; text = g_strdup_printf ( _ ( \"Do<S2SV_blank>you<S2SV_blank>want<S2SV_blank>to<S2SV_blank>continue<S2SV_blank>the<S2SV_blank>connection<S2SV_blank>to<S2SV_blank>host<S2SV_blank>\\\\\"%s\\\\\"?<S2SV_blank>If<S2SV_blank>you<S2SV_blank>\" \"choose<S2SV_blank>to<S2SV_blank>continue,<S2SV_blank>this<S2SV_blank>certificate<S2SV_blank>will<S2SV_blank>be<S2SV_blank>trusted<S2SV_blank>in<S2SV_blank>the<S2SV_blank>\" \"future<S2SV_blank>when<S2SV_blank>connecting<S2SV_blank>to<S2SV_blank>this<S2SV_blank>host.\" ) , hostname ) ; label = gtk_label_new ( text ) ; gtk_label_set_line_wrap ( GTK_LABEL ( label ) , TRUE ) ; gtk_label_set_line_wrap_mode ( GTK_LABEL ( label ) , PANGO_WRAP_WORD_CHAR ) ; gtk_label_set_max_width_chars ( GTK_LABEL ( label ) , 60 ) ; gtk_misc_set_alignment ( GTK_MISC ( label ) , 0.0 , 0.0 ) ; gtk_widget_show ( label ) ; g_free ( text ) ; vbox = gtk_dialog_get_content_area ( GTK_DIALOG ( query -> dialog ) ) ; gtk_box_pack_start ( GTK_BOX ( vbox ) , label , FALSE , FALSE , 0 ) ; priv -> queries = g_slist_prepend ( priv -> queries , query ) ; gtk_window_present ( GTK_WINDOW ( query -> dialog ) ) ; } } else { inf_xmpp_connection_certificate_verify_cancel ( connection , error ) ; g_error_free ( error ) ; } if ( table != NULL ) g_hash_table_unref ( table ) ; g_free ( hostname ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret ) ; } if ( error == NULL ) <S2SV_ModEnd> if ( verify <S2SV_ModStart> verify ) ; <S2SV_ModEnd> } table =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16789\n\n```\nCWE-835 static void urlParsePostBody ( struct URL * url , const struct HttpConnection * http , const char * buf , int len ) { struct HashMap contentType ; initHashMap ( & contentType , urlDestroyHashMapEntry , NULL ) ; const char * ctHeader = getFromHashMap ( & http -> header , \"content-type\" ) ; urlParseHeaderLine ( & contentType , ctHeader , ctHeader ? strlen ( ctHeader ) : 0 ) ; if ( getRefFromHashMap ( & contentType , \"application/x-www-form-urlencoded\" ) ) { urlParseQueryString ( & url -> args , buf , len ) ; } else if ( getRefFromHashMap ( & contentType , \"multipart/form-data\" ) ) { const char * boundary = getFromHashMap ( & contentType , \"boundary\" ) ; if ( boundary && * boundary ) { const char * lastPart = NULL ; for ( const char * part = buf ; len > 0 ; ) { const char * ptr ; if ( ( part == buf && ( ptr = urlMemstr ( part , len , \"--\" ) ) != NULL ) || ( ptr = urlMemstr ( part , len , \"\\\\r\\\\n--\" ) ) != NULL ) { len -= ptr - part + ( part == buf ? 2 : 4 ) ; part = ptr + ( part == buf ? 2 : 4 ) ; if ( ! urlMemcmp ( part , len , boundary ) ) { int i = strlen ( boundary ) ; len -= i ; part += i ; if ( ! urlMemcmp ( part , len , \"\\\\r\\\\n\" ) ) { len -= 2 ; part += 2 ; if ( lastPart ) { urlParsePart ( url , lastPart , ptr - lastPart ) ; } else { if ( ptr != buf ) { info ( \"[http]<S2SV_blank>Ignoring<S2SV_blank>prologue<S2SV_blank>before<S2SV_blank>\\\\\"multipart/form-data\\\\\"!\" ) ; } } lastPart = part ; } else if ( ! urlMemcmp ( part , len , \"--\\\\r\\\\n\" ) ) { len -= 4 ; part += 4 ; urlParsePart ( url , lastPart , ptr - lastPart ) ; lastPart = NULL ; if ( len > 0 ) { info ( \"[http]<S2SV_blank>Ignoring<S2SV_blank>epilogue<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>\\\\\"multipart/\" \"form-data\\\\\"!\" ) ; } } } } <S2SV_StartBug> } <S2SV_EndBug> if ( lastPart ) { <S2SV_StartBug> warn ( \"[http]<S2SV_blank>Missing<S2SV_blank>final<S2SV_blank>\\\\\"boundary\\\\\"<S2SV_blank>for<S2SV_blank>\\\\\"multipart/form-data\\\\\"!\" ) ; <S2SV_EndBug> } } else { warn ( \"[http]<S2SV_blank>Missing<S2SV_blank>\\\\\"boundary\\\\\"<S2SV_blank>information<S2SV_blank>for<S2SV_blank>\\\\\"multipart/form-data\\\\\"!\" ) ; } } destroyHashMap ( & contentType ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } } } else <S2SV_ModEnd> { warn ( <S2SV_ModStart> { warn ( \"[http]<S2SV_blank>Ignorning<S2SV_blank>broken<S2SV_blank>multipart/form-data\" ) ; break ; } } if ( lastPart ) { warn (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 static inline int check_sticky ( struct inode * dir , struct inode * inode ) { kuid_t fsuid = current_fsuid ( ) ; if ( ! ( dir -> i_mode & S_ISVTX ) ) return 0 ; if ( uid_eq ( inode -> i_uid , fsuid ) ) return 0 ; if ( uid_eq ( dir -> i_uid , fsuid ) ) return 0 ; <S2SV_StartBug> return ! inode_capable ( inode , CAP_FOWNER ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return ! capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13040\n\n```\nCWE-125 static int mp_dss_print ( netdissect_options * ndo , const u_char * opt , u_int opt_len , u_char flags ) { const struct mp_dss * mdss = ( const struct mp_dss * ) opt ; <S2SV_StartBug> if ( ( opt_len != mp_dss_len ( mdss , 1 ) && <S2SV_EndBug> opt_len != mp_dss_len ( mdss , 0 ) ) || flags & TH_SYN ) return 0 ; if ( mdss -> flags & MP_DSS_F ) ND_PRINT ( ( ndo , \"<S2SV_blank>fin\" ) ) ; opt += 4 ; <S2SV_StartBug> if ( mdss -> flags & MP_DSS_A ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>ack<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( mdss -> flags & MP_DSS_a ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%\" PRIu64 , EXTRACT_64BITS ( opt ) ) ) ; opt += 8 ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( opt ) ) ) ; <S2SV_EndBug> opt += 4 ; <S2SV_StartBug> } <S2SV_EndBug> } if ( mdss -> flags & MP_DSS_M ) { ND_PRINT ( ( ndo , \"<S2SV_blank>seq<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( mdss -> flags & MP_DSS_m ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%\" PRIu64 , EXTRACT_64BITS ( opt ) ) ) ; opt += 8 ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( opt ) ) ) ; <S2SV_EndBug> opt += 4 ; <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>subseq<S2SV_blank>%u\" , EXTRACT_32BITS ( opt ) ) ) ; opt += 4 ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>len<S2SV_blank>%u\" , EXTRACT_16BITS ( opt ) ) ) ; <S2SV_EndBug> opt += 2 ; <S2SV_StartBug> if ( opt_len == mp_dss_len ( mdss , 1 ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>csum<S2SV_blank>0x%x\" , EXTRACT_16BITS ( opt ) ) ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( opt_len < 4 ) return 0 ; if ( <S2SV_ModEnd> flags & TH_SYN <S2SV_ModStart> += 4 ; opt_len -= 4 ; <S2SV_ModStart> MP_DSS_a ) { if ( opt_len < 8 ) return 0 ; <S2SV_ModStart> += 8 ; opt_len -= 8 ; <S2SV_ModStart> } else { if ( opt_len < 4 ) return 0 ; <S2SV_ModStart> += 4 ; opt_len -= 4 ; <S2SV_ModStart> MP_DSS_m ) { if ( opt_len < 8 ) return 0 ; <S2SV_ModStart> += 8 ; opt_len -= 8 ; <S2SV_ModStart> } else { if ( opt_len < 4 ) return 0 ; <S2SV_ModStart> += 4 ; opt_len -= 4 ; } if ( opt_len < 4 ) return 0 ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> += 4 ; opt_len -= 4 ; if ( opt_len < 2 ) return 0 ; <S2SV_ModStart> += 2 ; opt_len -= 2 ; if ( opt_len >= 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>csum<S2SV_blank>0x%x\" , EXTRACT_16BITS ( opt ) ) ) ; opt_len -= 2 ; } } if ( opt_len != 0 ) return 0 ; return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void output_stats ( FIRSTPASS_STATS * stats , struct vpx_codec_pkt_list * pktlist ) { struct vpx_codec_cx_pkt pkt ; pkt . kind = VPX_CODEC_STATS_PKT ; pkt . data . twopass_stats . buf = stats ; pkt . data . twopass_stats . sz = sizeof ( FIRSTPASS_STATS ) ; vpx_codec_pkt_list_add ( pktlist , & pkt ) ; # if OUTPUT_FPF { FILE * fpfile ; fpfile = fopen ( \"firstpass.stt\" , \"a\" ) ; <S2SV_StartBug> fprintf ( fpfile , \"%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.4f<S2SV_blank>%12.4f\" <S2SV_EndBug> \"%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f<S2SV_blank>%12.4f\" \"%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.4f<S2SV_blank>%12.0f<S2SV_blank>%12.0f<S2SV_blank>%12.4f\\\\n\" , stats -> frame , <S2SV_StartBug> stats -> intra_error , <S2SV_EndBug> stats -> coded_error , stats -> sr_coded_error , <S2SV_StartBug> stats -> ssim_weighted_pred_err , <S2SV_EndBug> stats -> pcnt_inter , stats -> pcnt_motion , stats -> pcnt_second_ref , <S2SV_StartBug> stats -> pcnt_neutral , <S2SV_EndBug> stats -> MVr , stats -> mvr_abs , stats -> MVc , stats -> mvc_abs , stats -> MVrv , stats -> MVcv , stats -> mv_in_out_count , stats -> new_mv_count , stats -> count , stats -> duration ) ; fclose ( fpfile ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( fpfile , \"%12.0lf<S2SV_blank>%12.4lf<S2SV_blank>%12.0lf<S2SV_blank>%12.0lf<S2SV_blank>%12.0lf<S2SV_blank>%12.4lf<S2SV_blank>%12.4lf\" \"%12.4lf<S2SV_blank>%12.4lf<S2SV_blank>%12.4lf<S2SV_blank>%12.4lf<S2SV_blank>%12.4lf<S2SV_blank>%12.4lf<S2SV_blank>%12.4lf<S2SV_blank>%12.4lf\" \"%12.4lf<S2SV_blank>%12.4lf<S2SV_blank>%12.0lf<S2SV_blank>%12.0lf<S2SV_blank>%12.0lf<S2SV_blank>%12.4lf\\\\n\" <S2SV_ModEnd> , stats -> <S2SV_ModStart> , stats -> weight , stats -> <S2SV_ModStart> , stats -> <S2SV_ModEnd> pcnt_inter , stats <S2SV_ModStart> stats -> pcnt_neutral , stats -> intra_skip_pct , stats -> inactive_zone_rows , stats -> inactive_zone_cols\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_release_frame_buffer ( void * cb_priv , vpx_codec_frame_buffer_t * fb ) { InternalFrameBuffer * const int_fb = ( InternalFrameBuffer * ) fb -> priv ; ( void ) cb_priv ; <S2SV_StartBug> int_fb -> in_use = 0 ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) cb_priv ; if ( int_fb )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5225\n\n```\nCWE-119 DECLAREcpFunc ( cpSeparate2ContigByRow ) { tsize_t scanlinesizein = TIFFScanlineSize ( in ) ; tsize_t scanlinesizeout = TIFFScanlineSize ( out ) ; tdata_t inbuf ; tdata_t outbuf ; register uint8 * inp , * outp ; register uint32 n ; uint32 row ; tsample_t s ; <S2SV_StartBug> inbuf = _TIFFmalloc ( scanlinesizein ) ; <S2SV_EndBug> outbuf = _TIFFmalloc ( scanlinesizeout ) ; if ( ! inbuf || ! outbuf ) goto bad ; _TIFFmemset ( inbuf , 0 , scanlinesizein ) ; _TIFFmemset ( outbuf , 0 , scanlinesizeout ) ; for ( row = 0 ; row < imagelength ; row ++ ) { for ( s = 0 ; s < spp ; s ++ ) { if ( TIFFReadScanline ( in , inbuf , row , s ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>scanline<S2SV_blank>%lu\" , ( unsigned long ) row ) ; goto bad ; } inp = ( uint8 * ) inbuf ; outp = ( ( uint8 * ) outbuf ) + s ; for ( n = imagewidth ; n -- > 0 ; ) { * outp = * inp ++ ; outp += spp ; } } if ( TIFFWriteScanline ( out , outbuf , row , 0 ) < 0 ) { TIFFError ( TIFFFileName ( out ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>write<S2SV_blank>scanline<S2SV_blank>%lu\" , ( unsigned long ) row ) ; goto bad ; } } if ( inbuf ) _TIFFfree ( inbuf ) ; if ( outbuf ) _TIFFfree ( outbuf ) ; return 1 ; bad : if ( inbuf ) _TIFFfree ( inbuf ) ; if ( outbuf ) _TIFFfree ( outbuf ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tsample_t s ; uint16 bps = 0 ; ( void ) TIFFGetField ( in , TIFFTAG_BITSPERSAMPLE , & bps ) ; if ( bps != 8 ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can<S2SV_blank>only<S2SV_blank>handle<S2SV_blank>BitsPerSample=8<S2SV_blank>in<S2SV_blank>%s\" , \"cpSeparate2ContigByRow\" ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t rawSocketSendIpPacket ( Socket * socket , const SocketMsg * message , uint_t flags ) { error_t error ; size_t offset ; NetBuffer * buffer ; NetInterface * interface ; IpPseudoHeader pseudoHeader ; NetTxAncillary ancillary ; <S2SV_StartBug> interface = socket -> interface ; <S2SV_EndBug> buffer = ipAllocBuffer ( 0 , & offset ) ; if ( buffer == NULL ) return ERROR_OUT_OF_MEMORY ; do { error = netBufferAppend ( buffer , message -> data , message -> length ) ; if ( error ) break ; # if ( IPV4_SUPPORT == ENABLED ) if ( message -> destIpAddr . length == sizeof ( Ipv4Addr ) ) { Ipv4Addr srcIpAddr ; error = ipv4SelectSourceAddr ( & interface , message -> destIpAddr . ipv4Addr , & srcIpAddr ) ; if ( error ) break ; pseudoHeader . length = sizeof ( Ipv4PseudoHeader ) ; pseudoHeader . ipv4Data . srcAddr = srcIpAddr ; pseudoHeader . ipv4Data . destAddr = message -> destIpAddr . ipv4Addr ; pseudoHeader . ipv4Data . reserved = 0 ; pseudoHeader . ipv4Data . protocol = socket -> protocol ; pseudoHeader . ipv4Data . length = htons ( message -> length ) ; } else # endif # if ( IPV6_SUPPORT == ENABLED ) if ( message -> destIpAddr . length == sizeof ( Ipv6Addr ) ) { error = ipv6SelectSourceAddr ( & interface , & message -> destIpAddr . ipv6Addr , & pseudoHeader . ipv6Data . srcAddr ) ; if ( error ) break ; pseudoHeader . length = sizeof ( Ipv6PseudoHeader ) ; pseudoHeader . ipv6Data . destAddr = message -> destIpAddr . ipv6Addr ; pseudoHeader . ipv6Data . length = htonl ( message -> length ) ; pseudoHeader . ipv6Data . reserved [ 0 ] = 0 ; pseudoHeader . ipv6Data . reserved [ 1 ] = 0 ; pseudoHeader . ipv6Data . reserved [ 2 ] = 0 ; pseudoHeader . ipv6Data . nextHeader = socket -> protocol ; } else # endif { error = ERROR_FAILURE ; break ; } ancillary = NET_DEFAULT_TX_ANCILLARY ; if ( message -> ttl != 0 ) { ancillary . ttl = message -> ttl ; } else if ( ipIsMulticastAddr ( & message -> destIpAddr ) ) { ancillary . ttl = socket -> multicastTtl ; } else { ancillary . ttl = socket -> ttl ; } if ( flags & SOCKET_FLAG_DONT_ROUTE ) { ancillary . dontRoute = TRUE ; } # if ( IP_DIFF_SERV_SUPPORT == ENABLED ) ancillary . dscp = socket -> dscp ; # endif # if ( ETH_SUPPORT == ENABLED ) ancillary . srcMacAddr = message -> srcMacAddr ; ancillary . destMacAddr = message -> destMacAddr ; # endif # if ( ETH_VLAN_SUPPORT == ENABLED ) ancillary . vlanPcp = socket -> vlanPcp ; ancillary . vlanDei = socket -> vlanDei ; # endif # if ( ETH_VMAN_SUPPORT == ENABLED ) ancillary . vmanPcp = socket -> vmanPcp ; ancillary . vmanDei = socket -> vmanDei ; # endif # if ( ETH_PORT_TAGGING_SUPPORT == ENABLED ) ancillary . port = message -> switchPort ; # endif # if ( ETH_TIMESTAMP_SUPPORT == ENABLED ) ancillary . timestampId = message -> timestampId ; # endif error = ipSendDatagram ( interface , & pseudoHeader , buffer , offset , & ancillary ) ; if ( error ) break ; } while ( 0 ) ; netBufferFree ( buffer ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NetTxAncillary ancillary ; if ( message -> interface != NULL ) { interface = message -> interface ; } else { interface = socket -> interface ; } <S2SV_ModEnd> buffer = ipAllocBuffer\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3688\n\n```\nCWE-399 struct sctp_chunk * sctp_inq_pop ( struct sctp_inq * queue ) { struct sctp_chunk * chunk ; sctp_chunkhdr_t * ch = NULL ; if ( ( chunk = queue -> in_progress ) ) { if ( chunk -> singleton || chunk -> end_of_packet || chunk -> pdiscard ) { sctp_chunk_free ( chunk ) ; chunk = queue -> in_progress = NULL ; } else { ch = ( sctp_chunkhdr_t * ) chunk -> chunk_end ; skb_pull ( chunk -> skb , chunk -> chunk_end - chunk -> skb -> data ) ; <S2SV_StartBug> if ( skb_headlen ( chunk -> skb ) < sizeof ( sctp_chunkhdr_t ) ) { <S2SV_EndBug> sctp_chunk_free ( chunk ) ; chunk = queue -> in_progress = NULL ; } } } if ( ! chunk ) { struct list_head * entry ; if ( list_empty ( & queue -> in_chunk_list ) ) return NULL ; entry = queue -> in_chunk_list . next ; chunk = queue -> in_progress = list_entry ( entry , struct sctp_chunk , list ) ; list_del_init ( entry ) ; chunk -> singleton = 1 ; ch = ( sctp_chunkhdr_t * ) chunk -> skb -> data ; chunk -> data_accepted = 0 ; } chunk -> chunk_hdr = ch ; chunk -> chunk_end = ( ( __u8 * ) ch ) + WORD_ROUND ( ntohs ( ch -> length ) ) ; if ( unlikely ( skb_is_nonlinear ( chunk -> skb ) ) ) { if ( chunk -> chunk_end > skb_tail_pointer ( chunk -> skb ) ) chunk -> chunk_end = skb_tail_pointer ( chunk -> skb ) ; } skb_pull ( chunk -> skb , sizeof ( sctp_chunkhdr_t ) ) ; chunk -> subh . v = NULL ; <S2SV_StartBug> if ( chunk -> chunk_end < skb_tail_pointer ( chunk -> skb ) ) { <S2SV_EndBug> chunk -> singleton = 0 ; } else if ( chunk -> chunk_end > skb_tail_pointer ( chunk -> skb ) ) { <S2SV_StartBug> sctp_chunk_free ( chunk ) ; <S2SV_EndBug> chunk = queue -> in_progress = NULL ; return NULL ; } else { chunk -> end_of_packet = 1 ; } pr_debug ( \"+++sctp_inq_pop+++<S2SV_blank>chunk:%p[%s],<S2SV_blank>length:%d,<S2SV_blank>skb->len:%d\\\\n\" , chunk , sctp_cname ( SCTP_ST_CHUNK ( chunk -> chunk_hdr -> type ) ) , ntohs ( chunk -> chunk_hdr -> length ) , chunk -> skb -> len ) ; return chunk ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) ; <S2SV_ModEnd> } } if <S2SV_ModStart> chunk -> chunk_end + sizeof ( sctp_chunkhdr_t ) <S2SV_ModStart> ) ) { chunk -> pdiscard = 1 ; chunk -> chunk_end = skb_tail_pointer ( chunk -> skb ) ; } else { chunk -> end_of_packet = 1 ; } pr_debug ( \"+++sctp_inq_pop+++<S2SV_blank>chunk:%p[%s],<S2SV_blank>length:%d,<S2SV_blank>skb->len:%d\\\\n\" , chunk , sctp_cname ( SCTP_ST_CHUNK ( chunk -> chunk_hdr -> type ) ) , ntohs ( chunk -> chunk_hdr -> length ) , chunk -> skb -> len ) ; return <S2SV_ModEnd> chunk ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17806\n\n```\nCWE-787 static int hmac_create ( struct crypto_template * tmpl , struct rtattr * * tb ) { struct shash_instance * inst ; struct crypto_alg * alg ; struct shash_alg * salg ; int err ; int ds ; int ss ; err = crypto_check_attr_type ( tb , CRYPTO_ALG_TYPE_SHASH ) ; if ( err ) return err ; salg = shash_attr_alg ( tb [ 1 ] , 0 , 0 ) ; if ( IS_ERR ( salg ) ) return PTR_ERR ( salg ) ; <S2SV_StartBug> err = - EINVAL ; <S2SV_EndBug> <S2SV_StartBug> ds = salg -> digestsize ; <S2SV_EndBug> <S2SV_StartBug> ss = salg -> statesize ; <S2SV_EndBug> alg = & salg -> base ; if ( ds > alg -> cra_blocksize || ss < alg -> cra_blocksize ) goto out_put_alg ; inst = shash_alloc_instance ( \"hmac\" , alg ) ; err = PTR_ERR ( inst ) ; if ( IS_ERR ( inst ) ) goto out_put_alg ; err = crypto_init_shash_spawn ( shash_instance_ctx ( inst ) , salg , shash_crypto_instance ( inst ) ) ; if ( err ) goto out_free_inst ; inst -> alg . base . cra_priority = alg -> cra_priority ; inst -> alg . base . cra_blocksize = alg -> cra_blocksize ; inst -> alg . base . cra_alignmask = alg -> cra_alignmask ; ss = ALIGN ( ss , alg -> cra_alignmask + 1 ) ; inst -> alg . digestsize = ds ; inst -> alg . statesize = ss ; inst -> alg . base . cra_ctxsize = sizeof ( struct hmac_ctx ) + ALIGN ( ss * 2 , crypto_tfm_ctx_alignment ( ) ) ; inst -> alg . base . cra_init = hmac_init_tfm ; inst -> alg . base . cra_exit = hmac_exit_tfm ; inst -> alg . init = hmac_init ; inst -> alg . update = hmac_update ; inst -> alg . final = hmac_final ; inst -> alg . finup = hmac_finup ; inst -> alg . export = hmac_export ; inst -> alg . import = hmac_import ; inst -> alg . setkey = hmac_setkey ; err = shash_register_instance ( tmpl , inst ) ; if ( err ) { out_free_inst : shash_free_instance ( shash_crypto_instance ( inst ) ) ; } out_put_alg : crypto_mod_put ( alg ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> salg ) ; alg = & salg -> base ; <S2SV_ModStart> - EINVAL ; if ( crypto_shash_alg_has_setkey ( salg ) ) goto out_put_alg ; <S2SV_ModStart> salg -> statesize <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> swabHorAcc32 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { uint32 * wp = ( uint32 * ) cp0 ; tmsize_t wc = cc / 4 ; TIFFSwabArrayOfLong ( wp , wc ) ; <S2SV_StartBug> horAcc32 ( tif , cp0 , cc ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> swabHorAcc32 ( TIFF <S2SV_ModStart> wc ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1601\n\n```\nCWE-399 static int kvm_vm_ioctl_create_vcpu ( struct kvm * kvm , u32 id ) { int r ; struct kvm_vcpu * vcpu , * v ; vcpu = kvm_arch_vcpu_create ( kvm , id ) ; if ( IS_ERR ( vcpu ) ) return PTR_ERR ( vcpu ) ; preempt_notifier_init ( & vcpu -> preempt_notifier , & kvm_preempt_ops ) ; r = kvm_arch_vcpu_setup ( vcpu ) ; if ( r ) goto vcpu_destroy ; mutex_lock ( & kvm -> lock ) ; <S2SV_StartBug> if ( atomic_read ( & kvm -> online_vcpus ) == KVM_MAX_VCPUS ) { <S2SV_EndBug> r = - EINVAL ; goto unlock_vcpu_destroy ; } kvm_for_each_vcpu ( r , v , kvm ) if ( v -> vcpu_id == id ) { r = - EEXIST ; goto unlock_vcpu_destroy ; } BUG_ON ( kvm -> vcpus [ atomic_read ( & kvm -> online_vcpus ) ] ) ; kvm_get_kvm ( kvm ) ; r = create_vcpu_fd ( vcpu ) ; if ( r < 0 ) { kvm_put_kvm ( kvm ) ; goto unlock_vcpu_destroy ; } kvm -> vcpus [ atomic_read ( & kvm -> online_vcpus ) ] = vcpu ; smp_wmb ( ) ; atomic_inc ( & kvm -> online_vcpus ) ; mutex_unlock ( & kvm -> lock ) ; return r ; unlock_vcpu_destroy : mutex_unlock ( & kvm -> lock ) ; vcpu_destroy : kvm_arch_vcpu_destroy ( vcpu ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! kvm_vcpu_compatible ( vcpu ) ) { r = - EINVAL ; goto unlock_vcpu_destroy ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4205\n\n```\nCWE-399 int unshare_userns ( unsigned long unshare_flags , struct cred * * new_cred ) { <S2SV_StartBug> struct cred * cred ; <S2SV_EndBug> if ( ! ( unshare_flags & CLONE_NEWUSER ) ) return 0 ; cred = prepare_creds ( ) ; <S2SV_StartBug> if ( ! cred ) <S2SV_EndBug> return - ENOMEM ; * new_cred = cred ; <S2SV_StartBug> return create_user_ns ( cred ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cred * cred ; int err = - ENOMEM <S2SV_ModStart> ; if ( cred ) { err = create_user_ns ( cred ) ; if ( err ) put_cred ( cred ) ; else <S2SV_ModEnd> * new_cred = <S2SV_ModStart> = cred ; } return err <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6543\n\n```\nCWE-200 static int l2tp_ip6_getname ( struct socket * sock , struct sockaddr * uaddr , int * uaddr_len , int peer ) { struct sockaddr_l2tpip6 * lsa = ( struct sockaddr_l2tpip6 * ) uaddr ; struct sock * sk = sock -> sk ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct l2tp_ip6_sock * lsk = l2tp_ip6_sk ( sk ) ; lsa -> l2tp_family = AF_INET6 ; lsa -> l2tp_flowinfo = 0 ; lsa -> l2tp_scope_id = 0 ; <S2SV_StartBug> if ( peer ) { <S2SV_EndBug> if ( ! lsk -> peer_conn_id ) return - ENOTCONN ; lsa -> l2tp_conn_id = lsk -> peer_conn_id ; lsa -> l2tp_addr = np -> daddr ; if ( np -> sndflow ) lsa -> l2tp_flowinfo = np -> flow_label ; } else { if ( ipv6_addr_any ( & np -> rcv_saddr ) ) lsa -> l2tp_addr = np -> saddr ; else lsa -> l2tp_addr = np -> rcv_saddr ; lsa -> l2tp_conn_id = lsk -> conn_id ; } if ( ipv6_addr_type ( & lsa -> l2tp_addr ) & IPV6_ADDR_LINKLOCAL ) lsa -> l2tp_scope_id = sk -> sk_bound_dev_if ; * uaddr_len = sizeof ( * lsa ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; lsa -> l2tp_unused = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * pl_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { <S2SV_StartBug> if ( * rsize >= 60 && rdesc [ 39 ] == 0x2a && rdesc [ 40 ] == 0xf5 && <S2SV_EndBug> rdesc [ 41 ] == 0x00 && rdesc [ 59 ] == 0x26 && rdesc [ 60 ] == 0xf9 && rdesc [ 61 ] == 0x00 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Petalynx<S2SV_blank>Maxter<S2SV_blank>Remote<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 60 ] = 0xfa ; rdesc [ 40 ] = 0xfa ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 62 <S2SV_ModEnd> && rdesc [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int tcp_v4_connect ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct sockaddr_in * usin = ( struct sockaddr_in * ) uaddr ; struct inet_sock * inet = inet_sk ( sk ) ; struct tcp_sock * tp = tcp_sk ( sk ) ; __be16 orig_sport , orig_dport ; __be32 daddr , nexthop ; struct flowi4 fl4 ; struct rtable * rt ; <S2SV_StartBug> int err ; <S2SV_EndBug> if ( addr_len < sizeof ( struct sockaddr_in ) ) return - EINVAL ; if ( usin -> sin_family != AF_INET ) return - EAFNOSUPPORT ; nexthop = daddr = usin -> sin_addr . s_addr ; <S2SV_StartBug> if ( inet -> opt && inet -> opt -> srr ) { <S2SV_EndBug> if ( ! daddr ) return - EINVAL ; <S2SV_StartBug> nexthop = inet -> opt -> faddr ; <S2SV_EndBug> } orig_sport = inet -> inet_sport ; orig_dport = usin -> sin_port ; rt = ip_route_connect ( & fl4 , nexthop , inet -> inet_saddr , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if , IPPROTO_TCP , orig_sport , orig_dport , sk , true ) ; if ( IS_ERR ( rt ) ) { err = PTR_ERR ( rt ) ; if ( err == - ENETUNREACH ) IP_INC_STATS_BH ( sock_net ( sk ) , IPSTATS_MIB_OUTNOROUTES ) ; return err ; } if ( rt -> rt_flags & ( RTCF_MULTICAST | RTCF_BROADCAST ) ) { ip_rt_put ( rt ) ; return - ENETUNREACH ; } <S2SV_StartBug> if ( ! inet -> opt || ! inet -> opt -> srr ) <S2SV_EndBug> daddr = rt -> rt_dst ; if ( ! inet -> inet_saddr ) inet -> inet_saddr = rt -> rt_src ; inet -> inet_rcv_saddr = inet -> inet_saddr ; if ( tp -> rx_opt . ts_recent_stamp && inet -> inet_daddr != daddr ) { tp -> rx_opt . ts_recent = 0 ; tp -> rx_opt . ts_recent_stamp = 0 ; tp -> write_seq = 0 ; } if ( tcp_death_row . sysctl_tw_recycle && ! tp -> rx_opt . ts_recent_stamp && rt -> rt_dst == daddr ) { struct inet_peer * peer = rt_get_peer ( rt ) ; if ( peer ) { inet_peer_refcheck ( peer ) ; if ( ( u32 ) get_seconds ( ) - peer -> tcp_ts_stamp <= TCP_PAWS_MSL ) { tp -> rx_opt . ts_recent_stamp = peer -> tcp_ts_stamp ; tp -> rx_opt . ts_recent = peer -> tcp_ts ; } } } inet -> inet_dport = usin -> sin_port ; inet -> inet_daddr = daddr ; inet_csk ( sk ) -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( inet -> opt ) <S2SV_EndBug> inet_csk ( sk ) -> icsk_ext_hdr_len = inet -> opt -> optlen ; tp -> rx_opt . mss_clamp = TCP_MSS_DEFAULT ; tcp_set_state ( sk , TCP_SYN_SENT ) ; err = inet_hash_connect ( & tcp_death_row , sk ) ; if ( err ) goto failure ; rt = ip_route_newports ( & fl4 , rt , orig_sport , orig_dport , inet -> inet_sport , inet -> inet_dport , sk ) ; if ( IS_ERR ( rt ) ) { err = PTR_ERR ( rt ) ; rt = NULL ; goto failure ; } sk -> sk_gso_type = SKB_GSO_TCPV4 ; sk_setup_caps ( sk , & rt -> dst ) ; if ( ! tp -> write_seq ) tp -> write_seq = secure_tcp_sequence_number ( inet -> inet_saddr , inet -> inet_daddr , inet -> inet_sport , usin -> sin_port ) ; inet -> inet_id = tp -> write_seq ^ jiffies ; err = tcp_connect ( sk ) ; rt = NULL ; if ( err ) goto failure ; return 0 ; failure : tcp_set_state ( sk , TCP_CLOSE ) ; ip_rt_put ( rt ) ; sk -> sk_route_caps = 0 ; inet -> inet_dport = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int err ; struct ip_options_rcu * inet_opt <S2SV_ModStart> . s_addr ; inet_opt = rcu_dereference_protected ( inet -> inet_opt , sock_owned_by_user ( sk ) ) ; if ( inet_opt && inet_opt -> opt . <S2SV_ModEnd> srr ) { <S2SV_ModStart> ; nexthop = inet_opt -> opt . <S2SV_ModEnd> faddr ; } <S2SV_ModStart> if ( ! inet_opt || ! inet_opt -> opt . <S2SV_ModEnd> srr ) daddr <S2SV_ModStart> ; if ( inet_opt ) inet_csk ( sk ) -> icsk_ext_hdr_len = inet_opt -> opt . <S2SV_ModEnd> optlen ; tp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0205\n\n```\nCWE-119 static void unqueue_me_pi ( struct futex_q * q ) { WARN_ON ( plist_node_empty ( & q -> list ) ) ; plist_del ( & q -> list , & q -> list . plist ) ; BUG_ON ( ! q -> pi_state ) ; free_pi_state ( q -> pi_state ) ; q -> pi_state = NULL ; spin_unlock ( q -> lock_ptr ) ; <S2SV_StartBug> drop_futex_key_refs ( & q -> key ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lock_ptr ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void fill_variance_tree ( void * data , BLOCK_SIZE bsize ) { <S2SV_StartBug> variance_node node ; <S2SV_EndBug> tree_to_node ( data , bsize , & node ) ; sum_2_variances ( node . split [ 0 ] , node . split [ 1 ] , & node . part_variances -> horz [ 0 ] ) ; sum_2_variances ( node . split [ 2 ] , node . split [ 3 ] , & node . part_variances -> horz [ 1 ] ) ; sum_2_variances ( node . split [ 0 ] , node . split [ 2 ] , & node . part_variances -> vert [ 0 ] ) ; sum_2_variances ( node . split [ 1 ] , node . split [ 3 ] , & node . part_variances -> vert [ 1 ] ) ; sum_2_variances ( & node . part_variances -> vert [ 0 ] , & node . part_variances -> vert [ 1 ] , & node . part_variances -> none ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { variance_node node ; memset ( & node , 0 , sizeof ( node ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4621\n\n```\nCWE-835 static void check_preempt_curr ( struct rq * rq , struct task_struct * p , int flags ) { const struct sched_class * class ; if ( p -> sched_class == rq -> curr -> sched_class ) { rq -> curr -> sched_class -> check_preempt_curr ( rq , p , flags ) ; } else { for_each_class ( class ) { if ( class == rq -> curr -> sched_class ) break ; if ( class == p -> sched_class ) { resched_task ( rq -> curr ) ; break ; } } } <S2SV_StartBug> if ( test_tsk_need_resched ( rq -> curr ) ) <S2SV_EndBug> rq -> skip_clock_update = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( rq -> curr -> se . on_rq &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_prob_diff_update_savings_search_model ( const unsigned int * ct , <S2SV_StartBug> const vp9_prob * oldp , <S2SV_EndBug> vp9_prob * bestp , <S2SV_StartBug> vp9_prob upd ) { <S2SV_EndBug> int i , old_b , new_b , update_b , savings , bestsavings , step ; int newp ; <S2SV_StartBug> vp9_prob bestnewp , newplist [ ENTROPY_NODES ] , oldplist [ ENTROPY_NODES ] ; <S2SV_EndBug> vp9_model_to_full_probs ( oldp , oldplist ) ; <S2SV_StartBug> vpx_memcpy ( newplist , oldp , sizeof ( vp9_prob ) * UNCONSTRAINED_NODES ) ; <S2SV_EndBug> for ( i = UNCONSTRAINED_NODES , old_b = 0 ; i < ENTROPY_NODES ; ++ i ) old_b += cost_branch256 ( ct + 2 * i , oldplist [ i ] ) ; old_b += cost_branch256 ( ct + 2 * PIVOT_NODE , oldplist [ PIVOT_NODE ] ) ; bestsavings = 0 ; bestnewp = oldp [ PIVOT_NODE ] ; <S2SV_StartBug> step = ( * bestp > oldp [ PIVOT_NODE ] ? - 1 : 1 ) ; <S2SV_EndBug> for ( newp = * bestp ; newp != oldp [ PIVOT_NODE ] ; newp += step ) { if ( newp < 1 || newp > 255 ) continue ; newplist [ PIVOT_NODE ] = newp ; vp9_model_to_full_probs ( newplist , newplist ) ; for ( i = UNCONSTRAINED_NODES , new_b = 0 ; i < ENTROPY_NODES ; ++ i ) new_b += cost_branch256 ( ct + 2 * i , newplist [ i ] ) ; new_b += cost_branch256 ( ct + 2 * PIVOT_NODE , newplist [ PIVOT_NODE ] ) ; update_b = prob_diff_update_cost ( newp , oldp [ PIVOT_NODE ] ) + vp9_cost_upd256 ; savings = old_b - new_b - update_b ; if ( savings > bestsavings ) { bestsavings = savings ; bestnewp = newp ; } } <S2SV_StartBug> * bestp = bestnewp ; <S2SV_EndBug> return bestsavings ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ct , const vpx_prob * oldp , vpx_prob <S2SV_ModEnd> * bestp , <S2SV_ModStart> * bestp , vpx_prob upd , int stepsize ) { int <S2SV_ModEnd> i , old_b <S2SV_ModStart> int newp ; vpx_prob <S2SV_ModEnd> bestnewp , newplist <S2SV_ModStart> oldplist ) ; memcpy <S2SV_ModEnd> ( newplist , <S2SV_ModStart> , sizeof ( vpx_prob <S2SV_ModEnd> ) * UNCONSTRAINED_NODES <S2SV_ModStart> PIVOT_NODE ] ; if ( * bestp > oldp [ PIVOT_NODE ] ) { step = - stepsize ; for ( newp = * bestp ; newp > <S2SV_ModEnd> oldp [ PIVOT_NODE <S2SV_ModStart> ; } } } else { step = stepsize ; for ( newp = * bestp ; newp < oldp [ PIVOT_NODE ] ; newp += step ) { if ( newp < 1 || newp > 255 ) continue ; newplist [ PIVOT_NODE ] = newp ; vp9_model_to_full_probs ( newplist , newplist ) ; for ( i = UNCONSTRAINED_NODES , new_b = 0 ; i < ENTROPY_NODES ; ++ i ) new_b += cost_branch256 ( ct + 2 * i , newplist [ i ] ) ; new_b += cost_branch256 ( ct + 2 * PIVOT_NODE , newplist [ PIVOT_NODE ] ) ; update_b = prob_diff_update_cost ( newp , oldp [ PIVOT_NODE ] ) + vp9_cost_upd256 ; savings = old_b - new_b - update_b ; if ( savings > bestsavings ) { bestsavings = savings ; bestnewp = newp ; } } } * bestp = bestnewp <S2SV_ModEnd> ; return bestsavings\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3730\n\n```\nCWE-476 static int tls_construct_cke_dhe ( SSL * s , unsigned char * * p , int * len , int * al ) { # ifndef OPENSSL_NO_DH DH * dh_clnt = NULL ; const BIGNUM * pub_key ; EVP_PKEY * ckey = NULL , * skey = NULL ; skey = s -> s3 -> peer_tmp ; if ( skey == NULL ) { SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_DHE , ERR_R_INTERNAL_ERROR ) ; return 0 ; } ckey = ssl_generate_pkey ( skey ) ; <S2SV_StartBug> dh_clnt = EVP_PKEY_get0_DH ( ckey ) ; <S2SV_EndBug> if ( dh_clnt == NULL || ssl_derive ( s , ckey , skey ) == 0 ) { SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_DHE , ERR_R_INTERNAL_ERROR ) ; EVP_PKEY_free ( ckey ) ; return 0 ; } DH_get0_key ( dh_clnt , & pub_key , NULL ) ; * len = BN_num_bytes ( pub_key ) ; s2n ( * len , * p ) ; BN_bn2bin ( pub_key , * p ) ; * len += 2 ; EVP_PKEY_free ( ckey ) ; return 1 ; # else SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_DHE , ERR_R_INTERNAL_ERROR ) ; * al = SSL_AD_INTERNAL_ERROR ; return 0 ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skey ) ; if ( ckey == NULL ) { SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_DHE , ERR_R_INTERNAL_ERROR ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_copy_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> vpx_ref_frame_t * const frame = va_arg ( args , vpx_ref_frame_t * ) ; if ( frame != NULL ) { YV12_BUFFER_CONFIG sd ; image2yuvconfig ( & frame -> img , & sd ) ; vp9_copy_reference_enc ( ctx -> cpi , ref_frame_to_vp9_reframe ( frame -> frame_type ) , & sd ) ; return VPX_CODEC_OK ; } else { return VPX_CODEC_INVALID_PARAM ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 void setattr_copy ( struct inode * inode , const struct iattr * attr ) { unsigned int ia_valid = attr -> ia_valid ; if ( ia_valid & ATTR_UID ) inode -> i_uid = attr -> ia_uid ; if ( ia_valid & ATTR_GID ) inode -> i_gid = attr -> ia_gid ; if ( ia_valid & ATTR_ATIME ) inode -> i_atime = timespec_trunc ( attr -> ia_atime , inode -> i_sb -> s_time_gran ) ; if ( ia_valid & ATTR_MTIME ) inode -> i_mtime = timespec_trunc ( attr -> ia_mtime , inode -> i_sb -> s_time_gran ) ; if ( ia_valid & ATTR_CTIME ) inode -> i_ctime = timespec_trunc ( attr -> ia_ctime , inode -> i_sb -> s_time_gran ) ; if ( ia_valid & ATTR_MODE ) { umode_t mode = attr -> ia_mode ; if ( ! in_group_p ( inode -> i_gid ) && <S2SV_StartBug> ! inode_capable ( inode , CAP_FSETID ) ) <S2SV_EndBug> mode &= ~ S_ISGID ; inode -> i_mode = mode ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) && ! capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1476\n\n```\nCWE-189 int midi_synth_load_patch ( int dev , int format , const char __user * addr , <S2SV_StartBug> int offs , int count , int pmgr_flag ) <S2SV_EndBug> { int orig_dev = synth_devs [ dev ] -> midi_dev ; struct sysex_info sysex ; int i ; unsigned long left , src_offs , eox_seen = 0 ; int first_byte = 1 ; int hdr_size = ( unsigned long ) & sysex . data [ 0 ] - ( unsigned long ) & sysex ; leave_sysex ( dev ) ; if ( ! prefix_cmd ( orig_dev , 0xf0 ) ) return 0 ; if ( format != SYSEX_PATCH ) <S2SV_StartBug> { <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> } <S2SV_EndBug> if ( count < hdr_size ) <S2SV_StartBug> { <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> } <S2SV_EndBug> count -= hdr_size ; <S2SV_StartBug> if ( copy_from_user ( & ( ( char * ) & sysex ) [ offs ] , & ( addr ) [ offs ] , hdr_size - offs ) ) <S2SV_EndBug> return - EFAULT ; <S2SV_StartBug> if ( count < sysex . len ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> sysex . len = count ; <S2SV_StartBug> } <S2SV_EndBug> left = sysex . len ; src_offs = 0 ; for ( i = 0 ; i < left && ! signal_pending ( current ) ; i ++ ) { unsigned char data ; if ( get_user ( data , ( unsigned char __user * ) ( addr + hdr_size + i ) ) ) return - EFAULT ; eox_seen = ( i > 0 && data & 0x80 ) ; if ( eox_seen && data != 0xf7 ) data = 0xf7 ; if ( i == 0 ) { if ( data != 0xf0 ) { printk ( KERN_WARNING \"midi_synth:<S2SV_blank>Sysex<S2SV_blank>start<S2SV_blank>missing\\\\n\" ) ; return - EINVAL ; } } while ( ! midi_devs [ orig_dev ] -> outputc ( orig_dev , ( unsigned char ) ( data & 0xff ) ) && ! signal_pending ( current ) ) schedule ( ) ; if ( ! first_byte && data & 0x80 ) return 0 ; first_byte = 0 ; } if ( ! eox_seen ) midi_outc ( orig_dev , 0xf7 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * addr , <S2SV_ModEnd> int count , <S2SV_ModStart> != SYSEX_PATCH ) <S2SV_ModEnd> return - EINVAL <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> if ( count <S2SV_ModStart> < hdr_size ) <S2SV_ModEnd> return - EINVAL <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> count -= hdr_size <S2SV_ModStart> copy_from_user ( & sysex , addr , hdr_size <S2SV_ModEnd> ) ) return <S2SV_ModStart> ; if ( ( unsigned ) count < ( unsigned ) <S2SV_ModEnd> sysex . len <S2SV_ModStart> . len ) <S2SV_ModEnd> sysex . len <S2SV_ModStart> = count ; <S2SV_ModEnd> left = sysex\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5336\n\n```\nCWE-20 void mk_request_free ( struct session_request * sr ) { if ( sr -> fd_file > 0 ) { <S2SV_StartBug> mk_vhost_close ( sr ) ; <S2SV_EndBug> } if ( sr -> headers . location ) { mk_mem_free ( sr -> headers . location ) ; } if ( sr -> uri_processed . data != sr -> uri . data ) { mk_ptr_free ( & sr -> uri_processed ) ; } if ( sr -> real_path . data != sr -> real_path_static ) { mk_ptr_free ( & sr -> real_path ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( sr -> fd_is_fdt == MK_TRUE ) { <S2SV_ModStart> sr ) ; } else { close ( sr -> fd_file ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9940\n\n```\nCWE-416 static void regulator_ena_gpio_free ( struct regulator_dev * rdev ) { struct regulator_enable_gpio * pin , * n ; if ( ! rdev -> ena_pin ) return ; list_for_each_entry_safe ( pin , n , & regulator_ena_gpio_list , list ) { if ( pin -> gpiod == rdev -> ena_pin -> gpiod ) { if ( pin -> request_count <= 1 ) { pin -> request_count = 0 ; gpiod_put ( pin -> gpiod ) ; list_del ( & pin -> list ) ; kfree ( pin ) ; <S2SV_StartBug> } else { <S2SV_EndBug> pin -> request_count -- ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pin ) ; rdev -> ena_pin = NULL ; return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12995\n\n```\nCWE-835 const u_char * ns_nprint ( netdissect_options * ndo , register const u_char * cp , register const u_char * bp ) { register u_int i , l ; register const u_char * rp = NULL ; register int compress = 0 ; <S2SV_StartBug> int chars_processed ; <S2SV_EndBug> int elt ; <S2SV_StartBug> int data_size = ndo -> ndo_snapend - bp ; <S2SV_EndBug> if ( ( l = labellen ( ndo , cp ) ) == ( u_int ) - 1 ) return ( NULL ) ; if ( ! ND_TTEST2 ( * cp , 1 ) ) return ( NULL ) ; <S2SV_StartBug> chars_processed = 1 ; <S2SV_EndBug> if ( ( ( i = * cp ++ ) & INDIR_MASK ) != INDIR_MASK ) { compress = 0 ; rp = cp + l ; } if ( i != 0 ) while ( i && cp < ndo -> ndo_snapend ) { if ( ( i & INDIR_MASK ) == INDIR_MASK ) { if ( ! compress ) { rp = cp + 1 ; compress = 1 ; } if ( ! ND_TTEST2 ( * cp , 1 ) ) return ( NULL ) ; <S2SV_StartBug> cp = bp + ( ( ( i << 8 ) | * cp ) & 0x3fff ) ; <S2SV_EndBug> if ( ( l = labellen ( ndo , cp ) ) == ( u_int ) - 1 ) return ( NULL ) ; if ( ! ND_TTEST2 ( * cp , 1 ) ) return ( NULL ) ; i = * cp ++ ; <S2SV_StartBug> chars_processed ++ ; <S2SV_EndBug> if ( chars_processed >= data_size ) { ND_PRINT ( ( ndo , \"<LOOP>\" ) ) ; return ( NULL ) ; } continue ; } if ( ( i & INDIR_MASK ) == EDNS0_MASK ) { elt = ( i & ~ INDIR_MASK ) ; switch ( elt ) { case EDNS0_ELT_BITLABEL : if ( blabel_print ( ndo , cp ) == NULL ) return ( NULL ) ; break ; default : ND_PRINT ( ( ndo , \"<ELT<S2SV_blank>%d>\" , elt ) ) ; return ( NULL ) ; } } else { if ( fn_printn ( ndo , cp , l , ndo -> ndo_snapend ) ) return ( NULL ) ; } cp += l ; <S2SV_StartBug> chars_processed += l ; <S2SV_EndBug> ND_PRINT ( ( ndo , \".\" ) ) ; if ( ( l = labellen ( ndo , cp ) ) == ( u_int ) - 1 ) return ( NULL ) ; if ( ! ND_TTEST2 ( * cp , 1 ) ) return ( NULL ) ; i = * cp ++ ; <S2SV_StartBug> chars_processed ++ ; <S2SV_EndBug> if ( ! compress ) rp += l + 1 ; } else ND_PRINT ( ( ndo , \".\" ) ) ; return ( rp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; int elt ; u_int offset , max_offset ; if ( ( l = labellen ( ndo , cp ) ) == ( u_int ) - 1 ) return ( NULL ) ; if ( ! ND_TTEST2 ( * cp , 1 ) ) return ( NULL ) ; max_offset = ( u_int ) ( cp - bp ) ; if ( ( ( i = * cp ++ ) & INDIR_MASK ) != INDIR_MASK ) { compress = 0 ; rp = cp + l ; } if ( i != 0 ) while ( i && cp < <S2SV_ModEnd> ndo -> ndo_snapend <S2SV_ModStart> ndo -> ndo_snapend ) { if ( ( i & INDIR_MASK ) == INDIR_MASK ) { if ( ! compress ) { rp = cp + 1 ; compress = 1 ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> NULL ) ; offset = ( ( ( i << 8 ) | * cp ) & 0x3fff ) ; if ( offset >= max_offset ) { ND_PRINT ( ( ndo , \"<BAD<S2SV_blank>PTR>\" ) ) ; return ( NULL ) ; } max_offset = offset ; cp = bp + offset ; if ( ( l = labellen ( ndo , cp ) ) == ( u_int ) - 1 ) return ( NULL ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> NULL ) ; <S2SV_ModEnd> i = * <S2SV_ModStart> cp ++ ; <S2SV_ModEnd> continue ; } <S2SV_ModStart> += l ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> cp ++ ; <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-252(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7247\n\n```\nCWE-252 static int smtp_mailaddr ( struct mailaddr * maddr , char * line , int mailfrom , char * * args , const char * domain ) { char * p , * e ; if ( line == NULL ) return ( 0 ) ; if ( * line != '<' ) return ( 0 ) ; e = strchr ( line , '>' ) ; if ( e == NULL ) return ( 0 ) ; * e ++ = '\\\\0' ; while ( * e == '<S2SV_blank>' ) e ++ ; * args = e ; if ( ! text_to_mailaddr ( maddr , line + 1 ) ) return ( 0 ) ; p = strchr ( maddr -> user , ':' ) ; if ( p != NULL ) { p ++ ; memmove ( maddr -> user , p , strlen ( p ) + 1 ) ; } <S2SV_StartBug> if ( ! valid_localpart ( maddr -> user ) || <S2SV_EndBug> <S2SV_StartBug> ! valid_domainpart ( maddr -> domain ) ) { <S2SV_EndBug> if ( mailfrom && maddr -> user [ 0 ] == '\\\\0' && maddr -> domain [ 0 ] == '\\\\0' ) return ( 1 ) ; if ( maddr -> user [ 0 ] == '\\\\0' ) return ( 0 ) ; if ( maddr -> domain [ 0 ] == '\\\\0' ) { ( void ) strlcpy ( maddr -> domain , domain , sizeof ( maddr -> domain ) ) ; return ( 1 ) ; } return ( 0 ) ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( mailfrom && maddr -> user [ 0 ] == '\\\\0' && maddr -> domain [ 0 ] == '\\\\0' ) return ( 1 ) ; if ( maddr -> user [ 0 ] == '\\\\0' || <S2SV_ModStart> -> user ) ) return ( 0 ) ; if ( maddr -> domain [ 0 ] == '\\\\0' ) { ( void ) strlcpy ( maddr -> domain , domain , sizeof ( maddr -> domain ) ) ; } if ( <S2SV_ModEnd> ! valid_domainpart ( <S2SV_ModStart> domain ) ) return ( 0 ) ; <S2SV_ModEnd> return ( 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28374\n\n```\nCWE-22 <S2SV_StartBug> static int target_xcopy_locate_se_dev_e4 ( const unsigned char * dev_wwn , <S2SV_EndBug> <S2SV_StartBug> struct se_device * * found_dev ) <S2SV_EndBug> { <S2SV_StartBug> struct xcopy_dev_search_info info ; <S2SV_EndBug> int ret ; memset ( & info , 0 , sizeof ( info ) ) ; info . dev_wwn = dev_wwn ; ret = target_for_each_device ( target_xcopy_locate_se_dev_e4_iter , & info ) ; if ( ret == 1 ) { * found_dev = info . found_dev ; return 0 ; <S2SV_StartBug> } else { <S2SV_EndBug> pr_debug_ratelimited ( \"Unable<S2SV_blank>to<S2SV_blank>locate<S2SV_blank>0xe4<S2SV_blank>descriptor<S2SV_blank>for<S2SV_blank>EXTENDED_COPY\\\\n\" ) ; return - EINVAL ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int target_xcopy_locate_se_dev_e4 ( struct se_session * sess , <S2SV_ModStart> se_device * * _found_dev , struct percpu_ref * * _found_lun_ref <S2SV_ModEnd> ) { struct <S2SV_ModStart> ) { struct se_dev_entry * deve ; struct se_node_acl * nacl ; struct se_lun * this_lun = NULL ; struct se_device * found_dev = NULL ; if ( ! sess ) goto err_out ; pr_debug ( \"XCOPY<S2SV_blank>0xe4:<S2SV_blank>searching<S2SV_blank>for:<S2SV_blank>%*ph\\\\n\" , XCOPY_NAA_IEEE_REGEX_LEN , dev_wwn ) ; nacl = sess -> se_node_acl ; rcu_read_lock ( ) ; hlist_for_each_entry_rcu ( deve , & nacl -> lun_entry_hlist , link ) { struct se_device * this_dev ; int rc ; this_lun = rcu_dereference ( deve -> se_lun ) ; this_dev = rcu_dereference_raw ( this_lun -> lun_se_dev ) ; rc = target_xcopy_locate_se_dev_e4_iter ( this_dev , dev_wwn ) ; if ( rc ) { if ( percpu_ref_tryget_live ( & this_lun -> lun_ref ) ) found_dev = this_dev ; break ; } } rcu_read_unlock ( ) ; if ( found_dev == NULL ) goto err_out ; pr_debug ( \"lun_ref<S2SV_blank>held<S2SV_blank>for<S2SV_blank>se_dev:<S2SV_blank>%p<S2SV_blank>se_dev->se_dev_group:<S2SV_blank>%p\\\\n\" , found_dev , & found_dev -> dev_group ) ; * _found_dev = found_dev ; * _found_lun_ref = & this_lun -> lun_ref <S2SV_ModEnd> ; return 0 <S2SV_ModStart> return 0 ; err_out : <S2SV_ModEnd> pr_debug_ratelimited ( \"Unable<S2SV_blank>to<S2SV_blank>locate<S2SV_blank>0xe4<S2SV_blank>descriptor<S2SV_blank>for<S2SV_blank>EXTENDED_COPY\\\\n\" <S2SV_ModStart> EINVAL ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 ssize_t socket_write ( const socket_t * socket , const void * buf , size_t count ) { assert ( socket != NULL ) ; assert ( buf != NULL ) ; <S2SV_StartBug> return send ( socket -> fd , buf , count , MSG_DONTWAIT ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return TEMP_FAILURE_RETRY ( <S2SV_ModStart> , MSG_DONTWAIT ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int input_stats ( struct twopass_rc * p , FIRSTPASS_STATS * fps ) { <S2SV_EndBug> if ( p -> stats_in >= p -> stats_in_end ) return EOF ; * fps = * p -> stats_in ; ++ p -> stats_in ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int input_stats ( TWO_PASS <S2SV_ModEnd> * p ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18208\n\n```\nCWE-835 static long madvise_willneed ( struct vm_area_struct * vma , struct vm_area_struct * * prev , unsigned long start , unsigned long end ) { struct file * file = vma -> vm_file ; <S2SV_StartBug> # ifdef CONFIG_SWAP <S2SV_EndBug> if ( ! file ) { <S2SV_StartBug> * prev = vma ; <S2SV_EndBug> force_swapin_readahead ( vma , start , end ) ; return 0 ; } if ( shmem_mapping ( file -> f_mapping ) ) { <S2SV_StartBug> * prev = vma ; <S2SV_EndBug> force_shm_swapin_readahead ( vma , start , end , file -> f_mapping ) ; return 0 ; } # else if ( ! file ) return - EBADF ; # endif if ( IS_DAX ( file_inode ( file ) ) ) { return 0 ; } <S2SV_StartBug> * prev = vma ; <S2SV_EndBug> start = ( ( start - vma -> vm_start ) >> PAGE_SHIFT ) + vma -> vm_pgoff ; if ( end > vma -> vm_end ) end = vma -> vm_end ; end = ( ( end - vma -> vm_start ) >> PAGE_SHIFT ) + vma -> vm_pgoff ; force_page_cache_readahead ( file -> f_mapping , file , start , end - start ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> vm_file ; * prev = vma ; <S2SV_ModStart> file ) { <S2SV_ModEnd> force_swapin_readahead ( vma <S2SV_ModStart> ) ) { <S2SV_ModEnd> force_shm_swapin_readahead ( vma <S2SV_ModStart> 0 ; } <S2SV_ModEnd> start = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14174\n\n```\nCWE-834 static MagickBooleanType ReadPSDLayersInternal ( Image * image , const ImageInfo * image_info , const PSDInfo * psd_info , const MagickBooleanType skip_layers , ExceptionInfo * exception ) { char type [ 4 ] ; LayerInfo * layer_info ; MagickSizeType size ; MagickBooleanType status ; register ssize_t i ; ssize_t count , j , number_layers ; size = GetPSDSize ( psd_info , image ) ; if ( size == 0 ) { ( void ) ReadBlobLong ( image ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; status = MagickFalse ; if ( ( count == 0 ) || ( LocaleNCompare ( type , \"8BIM\" , 4 ) != 0 ) ) return ( MagickTrue ) ; else { count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; if ( ( count != 0 ) && ( LocaleNCompare ( type , \"Lr16\" , 4 ) == 0 ) ) size = GetPSDSize ( psd_info , image ) ; else return ( MagickTrue ) ; } } status = MagickTrue ; if ( size != 0 ) { layer_info = ( LayerInfo * ) NULL ; number_layers = ( short ) ReadBlobShort ( image ) ; if ( number_layers < 0 ) { number_layers = MagickAbsoluteValue ( number_layers ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>negative<S2SV_blank>layer<S2SV_blank>count<S2SV_blank>corrected<S2SV_blank>for\" ) ; image -> matte = MagickTrue ; } if ( skip_layers != MagickFalse ) return ( MagickTrue ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>image<S2SV_blank>contains<S2SV_blank>%.20g<S2SV_blank>layers\" , ( double ) number_layers ) ; if ( number_layers == 0 ) ThrowBinaryException ( CorruptImageError , \"InvalidNumberOfLayers\" , image -> filename ) ; layer_info = ( LayerInfo * ) AcquireQuantumMemory ( ( size_t ) number_layers , sizeof ( * layer_info ) ) ; if ( layer_info == ( LayerInfo * ) NULL ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>allocation<S2SV_blank>of<S2SV_blank>LayerInfo<S2SV_blank>failed\" ) ; ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; } ( void ) ResetMagickMemory ( layer_info , 0 , ( size_t ) number_layers * sizeof ( * layer_info ) ) ; for ( i = 0 ; i < number_layers ; i ++ ) { ssize_t x , y ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>reading<S2SV_blank>layer<S2SV_blank>#%.20g\" , ( double ) i + 1 ) ; layer_info [ i ] . page . y = ReadBlobSignedLong ( image ) ; layer_info [ i ] . page . x = ReadBlobSignedLong ( image ) ; y = ReadBlobSignedLong ( image ) ; x = ReadBlobSignedLong ( image ) ; layer_info [ i ] . page . width = ( size_t ) ( x - layer_info [ i ] . page . x ) ; layer_info [ i ] . page . height = ( size_t ) ( y - layer_info [ i ] . page . y ) ; layer_info [ i ] . channels = ReadBlobShort ( image ) ; if ( layer_info [ i ] . channels > MaxPSDChannels ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"MaximumChannelsExceeded\" , image -> filename ) ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>offset(%.20g,%.20g),<S2SV_blank>size(%.20g,%.20g),<S2SV_blank>channels=%.20g\" , ( double ) layer_info [ i ] . page . x , ( double ) layer_info [ i ] . page . y , ( double ) layer_info [ i ] . page . height , ( double ) layer_info [ i ] . page . width , ( double ) layer_info [ i ] . channels ) ; for ( j = 0 ; j < ( ssize_t ) layer_info [ i ] . channels ; j ++ ) { layer_info [ i ] . channel_info [ j ] . type = ( short ) ReadBlobShort ( image ) ; layer_info [ i ] . channel_info [ j ] . size = ( size_t ) GetPSDSize ( psd_info , image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>channel[%.20g]:<S2SV_blank>type=%.20g,<S2SV_blank>size=%.20g\" , ( double ) j , ( double ) layer_info [ i ] . channel_info [ j ] . type , ( double ) layer_info [ i ] . channel_info [ j ] . size ) ; } count = ReadBlob ( image , 4 , ( unsigned char * ) type ) ; ReversePSDString ( image , type , 4 ) ; if ( ( count == 0 ) || ( LocaleNCompare ( type , \"8BIM\" , 4 ) != 0 ) ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>layer<S2SV_blank>type<S2SV_blank>was<S2SV_blank>%.4s<S2SV_blank>instead<S2SV_blank>of<S2SV_blank>8BIM\" , type ) ; layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"ImproperImageHeader\" , image -> filename ) ; } ( void ) ReadBlob ( image , 4 , ( unsigned char * ) layer_info [ i ] . blendkey ) ; ReversePSDString ( image , layer_info [ i ] . blendkey , 4 ) ; layer_info [ i ] . opacity = ( Quantum ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; layer_info [ i ] . clipping = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . flags = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . visible = ! ( layer_info [ i ] . flags & 0x02 ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>blend=%.4s,<S2SV_blank>opacity=%.20g,<S2SV_blank>clipping=%s,<S2SV_blank>flags=%d,<S2SV_blank>visible=%s\" , layer_info [ i ] . blendkey , ( double ) layer_info [ i ] . opacity , layer_info [ i ] . clipping ? \"true\" : \"false\" , layer_info [ i ] . flags , layer_info [ i ] . visible ? \"true\" : \"false\" ) ; ( void ) ReadBlobByte ( image ) ; size = ReadBlobLong ( image ) ; if ( size != 0 ) { MagickSizeType combined_length , length ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>contains<S2SV_blank>additional<S2SV_blank>info\" ) ; length = ReadBlobLong ( image ) ; combined_length = length + 4 ; if ( length != 0 ) { layer_info [ i ] . mask . page . y = ReadBlobSignedLong ( image ) ; layer_info [ i ] . mask . page . x = ReadBlobSignedLong ( image ) ; layer_info [ i ] . mask . page . height = ( size_t ) ( ReadBlobSignedLong ( image ) - layer_info [ i ] . mask . page . y ) ; layer_info [ i ] . mask . page . width = ( size_t ) ( ReadBlobSignedLong ( image ) - layer_info [ i ] . mask . page . x ) ; layer_info [ i ] . mask . background = ( unsigned char ) ReadBlobByte ( image ) ; layer_info [ i ] . mask . flags = ( unsigned char ) ReadBlobByte ( image ) ; if ( ! ( layer_info [ i ] . mask . flags & 0x01 ) ) { layer_info [ i ] . mask . page . y = layer_info [ i ] . mask . page . y - layer_info [ i ] . page . y ; layer_info [ i ] . mask . page . x = layer_info [ i ] . mask . page . x - layer_info [ i ] . page . x ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>mask:<S2SV_blank>offset(%.20g,%.20g),<S2SV_blank>size(%.20g,%.20g),<S2SV_blank>length=%.20g\" , ( double ) layer_info [ i ] . mask . page . x , ( double ) layer_info [ i ] . mask . page . y , ( double ) layer_info [ i ] . mask . page . width , ( double ) layer_info [ i ] . mask . page . height , ( double ) ( ( MagickOffsetType ) length ) - 18 ) ; if ( DiscardBlobBytes ( image , ( MagickSizeType ) ( length - 18 ) ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } length = ReadBlobLong ( image ) ; combined_length += length + 4 ; if ( length != 0 ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>blending<S2SV_blank>ranges:<S2SV_blank>length=%.20g\" , ( double ) ( ( MagickOffsetType ) length ) ) ; for ( j = 0 ; j < ( ssize_t ) length ; j += 8 ) { size_t blend_source = ReadBlobLong ( image ) ; size_t blend_dest = ReadBlobLong ( image ) ; <S2SV_StartBug> if ( image -> debug != MagickFalse ) <S2SV_EndBug> ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>source(%x),<S2SV_blank>dest(%x)\" , ( unsigned int ) blend_source , ( unsigned int ) blend_dest ) ; } } length = ( MagickSizeType ) ( unsigned char ) ReadBlobByte ( image ) ; combined_length += length + 1 ; if ( length > 0 ) ( void ) ReadBlob ( image , ( size_t ) length ++ , layer_info [ i ] . name ) ; layer_info [ i ] . name [ length ] = '\\\\0' ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>name:<S2SV_blank>%s\" , layer_info [ i ] . name ) ; if ( ( length % 4 ) != 0 ) { length = 4 - ( length % 4 ) ; combined_length += length ; if ( DiscardBlobBytes ( image , length ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } length = ( MagickSizeType ) size - combined_length ; if ( length > 0 ) { unsigned char * info ; if ( length > GetBlobSize ( image ) ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"InsufficientImageDataInFile\" , image -> filename ) ; } layer_info [ i ] . info = AcquireStringInfo ( ( const size_t ) length ) ; info = GetStringInfoDatum ( layer_info [ i ] . info ) ; ( void ) ReadBlob ( image , ( const size_t ) length , info ) ; } } } for ( i = 0 ; i < number_layers ; i ++ ) { if ( ( layer_info [ i ] . page . width == 0 ) || ( layer_info [ i ] . page . height == 0 ) ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>layer<S2SV_blank>data<S2SV_blank>is<S2SV_blank>empty\" ) ; if ( layer_info [ i ] . info != ( StringInfo * ) NULL ) layer_info [ i ] . info = DestroyStringInfo ( layer_info [ i ] . info ) ; continue ; } layer_info [ i ] . image = CloneImage ( image , layer_info [ i ] . page . width , layer_info [ i ] . page . height , MagickFalse , exception ) ; if ( layer_info [ i ] . image == ( Image * ) NULL ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>allocation<S2SV_blank>of<S2SV_blank>image<S2SV_blank>for<S2SV_blank>layer<S2SV_blank>%.20g<S2SV_blank>failed\" , ( double ) i ) ; ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; } if ( layer_info [ i ] . info != ( StringInfo * ) NULL ) { ( void ) SetImageProfile ( layer_info [ i ] . image , \"psd:additional-info\" , layer_info [ i ] . info ) ; layer_info [ i ] . info = DestroyStringInfo ( layer_info [ i ] . info ) ; } } if ( image_info -> ping == MagickFalse ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( layer_info [ i ] . image == ( Image * ) NULL ) { for ( j = 0 ; j < layer_info [ i ] . channels ; j ++ ) { if ( DiscardBlobBytes ( image , ( MagickSizeType ) layer_info [ i ] . channel_info [ j ] . size ) == MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; } } continue ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>reading<S2SV_blank>data<S2SV_blank>for<S2SV_blank>layer<S2SV_blank>%.20g\" , ( double ) i ) ; status = ReadPSDLayer ( image , image_info , psd_info , & layer_info [ i ] , exception ) ; if ( status == MagickFalse ) break ; status = SetImageProgress ( image , LoadImagesTag , i , ( MagickSizeType ) number_layers ) ; if ( status == MagickFalse ) break ; } } if ( status != MagickFalse ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( layer_info [ i ] . image == ( Image * ) NULL ) { for ( j = i ; j < number_layers - 1 ; j ++ ) layer_info [ j ] = layer_info [ j + 1 ] ; number_layers -- ; i -- ; } } if ( number_layers > 0 ) { for ( i = 0 ; i < number_layers ; i ++ ) { if ( i > 0 ) layer_info [ i ] . image -> previous = layer_info [ i - 1 ] . image ; if ( i < ( number_layers - 1 ) ) layer_info [ i ] . image -> next = layer_info [ i + 1 ] . image ; layer_info [ i ] . image -> page = layer_info [ i ] . page ; } image -> next = layer_info [ 0 ] . image ; layer_info [ 0 ] . image -> previous = image ; } layer_info = ( LayerInfo * ) RelinquishMagickMemory ( layer_info ) ; } else layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; } return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( EOFBlob ( image ) != MagickFalse ) { layer_info = DestroyLayerInfo ( layer_info , number_layers ) ; ThrowBinaryException ( CorruptImageError , \"InsufficientImageDataInFile\" , image -> filename ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7284\n\n```\nCWE-200 bool __net_get_random_once ( void * buf , int nbytes , bool * done , <S2SV_StartBug> struct static_key * done_key ) <S2SV_EndBug> { static DEFINE_SPINLOCK ( lock ) ; unsigned long flags ; spin_lock_irqsave ( & lock , flags ) ; if ( * done ) { spin_unlock_irqrestore ( & lock , flags ) ; return false ; } get_random_bytes ( buf , nbytes ) ; * done = true ; spin_unlock_irqrestore ( & lock , flags ) ; <S2SV_StartBug> __net_random_once_disable_jump ( done_key ) ; <S2SV_EndBug> return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct static_key * once_key <S2SV_ModEnd> ) { static <S2SV_ModStart> ; __net_random_once_disable_jump ( once_key <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31262\n\n```\nCWE-476 static GF_AV1Config * AV1_DuplicateConfig ( GF_AV1Config const * const cfg ) { u32 i = 0 ; GF_AV1Config * out = gf_malloc ( sizeof ( GF_AV1Config ) ) ; out -> marker = cfg -> marker ; out -> version = cfg -> version ; out -> seq_profile = cfg -> seq_profile ; out -> seq_level_idx_0 = cfg -> seq_level_idx_0 ; out -> seq_tier_0 = cfg -> seq_tier_0 ; out -> high_bitdepth = cfg -> high_bitdepth ; out -> twelve_bit = cfg -> twelve_bit ; out -> monochrome = cfg -> monochrome ; out -> chroma_subsampling_x = cfg -> chroma_subsampling_x ; out -> chroma_subsampling_y = cfg -> chroma_subsampling_y ; out -> chroma_sample_position = cfg -> chroma_sample_position ; out -> initial_presentation_delay_present = cfg -> initial_presentation_delay_present ; out -> initial_presentation_delay_minus_one = cfg -> initial_presentation_delay_minus_one ; out -> obu_array = gf_list_new ( ) ; for ( i = 0 ; i < gf_list_count ( cfg -> obu_array ) ; ++ i ) { GF_AV1_OBUArrayEntry * dst = gf_malloc ( sizeof ( GF_AV1_OBUArrayEntry ) ) , * src = gf_list_get ( cfg -> obu_array , i ) ; dst -> obu_length = src -> obu_length ; dst -> obu_type = src -> obu_type ; dst -> obu = gf_malloc ( ( size_t ) dst -> obu_length ) ; memcpy ( dst -> obu , src -> obu , ( size_t ) src -> obu_length ) ; gf_list_add ( out -> obu_array , dst ) ; } return out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_block_energy ( VP9_COMP * cpi , MACROBLOCK * x , BLOCK_SIZE bs ) { double energy ; <S2SV_StartBug> unsigned int var = block_variance ( cpi , x , bs ) ; <S2SV_EndBug> vp9_clear_system_state ( ) ; energy = 0.9 * ( log ( var + 1.0 ) - 10.0 ) ; return clamp ( ( int ) round ( energy ) , ENERGY_MIN , ENERGY_MAX ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> double energy ; double energy_midpoint ; vpx_clear_system_state ( ) ; energy_midpoint = ( cpi -> oxcf . pass == 2 ) ? cpi -> twopass . mb_av_energy : DEFAULT_E_MIDPOINT ; energy = vp9_log_block_var <S2SV_ModEnd> ( cpi , <S2SV_ModStart> , bs ) - energy_midpoint <S2SV_ModEnd> ; return clamp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t ctrl_set_svc_layer_id ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { vpx_svc_layer_id_t * const data = va_arg ( args , vpx_svc_layer_id_t * ) ; VP9_COMP * const cpi = ( VP9_COMP * ) ctx -> cpi ; SVC * const svc = & cpi -> svc ; svc -> spatial_layer_id = data -> spatial_layer_id ; svc -> temporal_layer_id = data -> temporal_layer_id ; if ( svc -> temporal_layer_id < 0 || svc -> temporal_layer_id >= ( int ) ctx -> cfg . ts_number_layers ) { return VPX_CODEC_INVALID_PARAM ; } if ( svc -> spatial_layer_id < 0 || svc -> spatial_layer_id >= ( int ) ctx -> cfg . ss_number_layers ) { return VPX_CODEC_INVALID_PARAM ; } return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8087\n\n```\nCWE-772 static int hwsim_new_radio_nl ( struct sk_buff * msg , struct genl_info * info ) { struct hwsim_new_radio_params param = { 0 } ; const char * hwname = NULL ; int ret ; param . reg_strict = info -> attrs [ HWSIM_ATTR_REG_STRICT_REG ] ; param . p2p_device = info -> attrs [ HWSIM_ATTR_SUPPORT_P2P_DEVICE ] ; param . channels = channels ; param . destroy_on_close = info -> attrs [ HWSIM_ATTR_DESTROY_RADIO_ON_CLOSE ] ; if ( info -> attrs [ HWSIM_ATTR_CHANNELS ] ) param . channels = nla_get_u32 ( info -> attrs [ HWSIM_ATTR_CHANNELS ] ) ; if ( info -> attrs [ HWSIM_ATTR_NO_VIF ] ) param . no_vif = true ; if ( info -> attrs [ HWSIM_ATTR_RADIO_NAME ] ) { hwname = kasprintf ( GFP_KERNEL , \"%.*s\" , nla_len ( info -> attrs [ HWSIM_ATTR_RADIO_NAME ] ) , ( char * ) nla_data ( info -> attrs [ HWSIM_ATTR_RADIO_NAME ] ) ) ; if ( ! hwname ) return - ENOMEM ; param . hwname = hwname ; } if ( info -> attrs [ HWSIM_ATTR_USE_CHANCTX ] ) param . use_chanctx = true ; else param . use_chanctx = ( param . channels > 1 ) ; if ( info -> attrs [ HWSIM_ATTR_REG_HINT_ALPHA2 ] ) param . reg_alpha2 = nla_data ( info -> attrs [ HWSIM_ATTR_REG_HINT_ALPHA2 ] ) ; if ( info -> attrs [ HWSIM_ATTR_REG_CUSTOM_REG ] ) { u32 idx = nla_get_u32 ( info -> attrs [ HWSIM_ATTR_REG_CUSTOM_REG ] ) ; <S2SV_StartBug> if ( idx >= ARRAY_SIZE ( hwsim_world_regdom_custom ) ) <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> param . regd = hwsim_world_regdom_custom [ idx ] ; <S2SV_EndBug> } ret = mac80211_hwsim_new_radio ( info , & param ) ; kfree ( hwname ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> hwsim_world_regdom_custom ) ) { kfree ( hwname ) ; <S2SV_ModStart> - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3234\n\n```\nCWE-200 static int rose_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct rose_sock * rose = rose_sk ( sk ) ; struct sockaddr_rose * srose = ( struct sockaddr_rose * ) msg -> msg_name ; size_t copied ; unsigned char * asmptr ; struct sk_buff * skb ; int n , er , qbit ; if ( sk -> sk_state != TCP_ESTABLISHED ) return - ENOTCONN ; if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) return er ; qbit = ( skb -> data [ 0 ] & ROSE_Q_BIT ) == ROSE_Q_BIT ; skb_pull ( skb , ROSE_MIN_LEN ) ; if ( rose -> qbitincl ) { asmptr = skb_push ( skb , 1 ) ; * asmptr = qbit ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( srose != NULL ) { <S2SV_StartBug> srose -> srose_family = AF_ROSE ; <S2SV_EndBug> srose -> srose_addr = rose -> dest_addr ; srose -> srose_call = rose -> dest_call ; srose -> srose_ndigis = rose -> dest_ndigis ; if ( msg -> msg_namelen >= sizeof ( struct full_sockaddr_rose ) ) { struct full_sockaddr_rose * full_srose = ( struct full_sockaddr_rose * ) msg -> msg_name ; for ( n = 0 ; n < rose -> dest_ndigis ; n ++ ) full_srose -> srose_digis [ n ] = rose -> dest_digis [ n ] ; msg -> msg_namelen = sizeof ( struct full_sockaddr_rose ) ; } else { if ( rose -> dest_ndigis >= 1 ) { srose -> srose_ndigis = 1 ; srose -> srose_digi = rose -> dest_digis [ 0 ] ; } msg -> msg_namelen = sizeof ( struct sockaddr_rose ) ; } } skb_free_datagram ( sk , skb ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { memset ( srose , 0 , msg -> msg_namelen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1833\n\n```\nCWE-264 <S2SV_StartBug> static int ecryptfs_parse_options ( struct ecryptfs_sb_info * sbi , char * options ) <S2SV_EndBug> { char * p ; int rc = 0 ; int sig_set = 0 ; int cipher_name_set = 0 ; int fn_cipher_name_set = 0 ; int cipher_key_bytes ; int cipher_key_bytes_set = 0 ; int fn_cipher_key_bytes ; int fn_cipher_key_bytes_set = 0 ; struct ecryptfs_mount_crypt_stat * mount_crypt_stat = & sbi -> mount_crypt_stat ; substring_t args [ MAX_OPT_ARGS ] ; int token ; char * sig_src ; char * cipher_name_dst ; char * cipher_name_src ; char * fn_cipher_name_dst ; char * fn_cipher_name_src ; char * fnek_dst ; char * fnek_src ; char * cipher_key_bytes_src ; char * fn_cipher_key_bytes_src ; <S2SV_StartBug> if ( ! options ) { <S2SV_EndBug> rc = - EINVAL ; goto out ; } ecryptfs_init_mount_crypt_stat ( mount_crypt_stat ) ; while ( ( p = strsep ( & options , \",\" ) ) != NULL ) { if ( ! * p ) continue ; token = match_token ( p , tokens , args ) ; switch ( token ) { case ecryptfs_opt_sig : case ecryptfs_opt_ecryptfs_sig : sig_src = args [ 0 ] . from ; rc = ecryptfs_add_global_auth_tok ( mount_crypt_stat , sig_src , 0 ) ; if ( rc ) { printk ( KERN_ERR \"Error<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>register<S2SV_blank>\" \"global<S2SV_blank>sig;<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , rc ) ; goto out ; } sig_set = 1 ; break ; case ecryptfs_opt_cipher : case ecryptfs_opt_ecryptfs_cipher : cipher_name_src = args [ 0 ] . from ; cipher_name_dst = mount_crypt_stat -> global_default_cipher_name ; strncpy ( cipher_name_dst , cipher_name_src , ECRYPTFS_MAX_CIPHER_NAME_SIZE ) ; cipher_name_dst [ ECRYPTFS_MAX_CIPHER_NAME_SIZE ] = '\\\\0' ; cipher_name_set = 1 ; break ; case ecryptfs_opt_ecryptfs_key_bytes : cipher_key_bytes_src = args [ 0 ] . from ; cipher_key_bytes = ( int ) simple_strtol ( cipher_key_bytes_src , & cipher_key_bytes_src , 0 ) ; mount_crypt_stat -> global_default_cipher_key_size = cipher_key_bytes ; cipher_key_bytes_set = 1 ; break ; case ecryptfs_opt_passthrough : mount_crypt_stat -> flags |= ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED ; break ; case ecryptfs_opt_xattr_metadata : mount_crypt_stat -> flags |= ECRYPTFS_XATTR_METADATA_ENABLED ; break ; case ecryptfs_opt_encrypted_view : mount_crypt_stat -> flags |= ECRYPTFS_XATTR_METADATA_ENABLED ; mount_crypt_stat -> flags |= ECRYPTFS_ENCRYPTED_VIEW_ENABLED ; break ; case ecryptfs_opt_fnek_sig : fnek_src = args [ 0 ] . from ; fnek_dst = mount_crypt_stat -> global_default_fnek_sig ; strncpy ( fnek_dst , fnek_src , ECRYPTFS_SIG_SIZE_HEX ) ; mount_crypt_stat -> global_default_fnek_sig [ ECRYPTFS_SIG_SIZE_HEX ] = '\\\\0' ; rc = ecryptfs_add_global_auth_tok ( mount_crypt_stat , mount_crypt_stat -> global_default_fnek_sig , ECRYPTFS_AUTH_TOK_FNEK ) ; if ( rc ) { printk ( KERN_ERR \"Error<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>register<S2SV_blank>\" \"global<S2SV_blank>fnek<S2SV_blank>sig<S2SV_blank>[%s];<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , mount_crypt_stat -> global_default_fnek_sig , rc ) ; goto out ; } mount_crypt_stat -> flags |= ( ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES | ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK ) ; break ; case ecryptfs_opt_fn_cipher : fn_cipher_name_src = args [ 0 ] . from ; fn_cipher_name_dst = mount_crypt_stat -> global_default_fn_cipher_name ; strncpy ( fn_cipher_name_dst , fn_cipher_name_src , ECRYPTFS_MAX_CIPHER_NAME_SIZE ) ; mount_crypt_stat -> global_default_fn_cipher_name [ ECRYPTFS_MAX_CIPHER_NAME_SIZE ] = '\\\\0' ; fn_cipher_name_set = 1 ; break ; case ecryptfs_opt_fn_cipher_key_bytes : fn_cipher_key_bytes_src = args [ 0 ] . from ; fn_cipher_key_bytes = ( int ) simple_strtol ( fn_cipher_key_bytes_src , & fn_cipher_key_bytes_src , 0 ) ; mount_crypt_stat -> global_default_fn_cipher_key_bytes = fn_cipher_key_bytes ; fn_cipher_key_bytes_set = 1 ; break ; case ecryptfs_opt_unlink_sigs : mount_crypt_stat -> flags |= ECRYPTFS_UNLINK_SIGS ; break ; case ecryptfs_opt_mount_auth_tok_only : mount_crypt_stat -> flags |= ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY ; break ; <S2SV_StartBug> case ecryptfs_opt_err : <S2SV_EndBug> default : printk ( KERN_WARNING \"%s:<S2SV_blank>eCryptfs:<S2SV_blank>unrecognized<S2SV_blank>option<S2SV_blank>[%s]\\\\n\" , __func__ , p ) ; } } if ( ! sig_set ) { rc = - EINVAL ; ecryptfs_printk ( KERN_ERR , \"You<S2SV_blank>must<S2SV_blank>supply<S2SV_blank>at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>valid<S2SV_blank>\" \"auth<S2SV_blank>tok<S2SV_blank>signature<S2SV_blank>as<S2SV_blank>a<S2SV_blank>mount<S2SV_blank>\" \"parameter;<S2SV_blank>see<S2SV_blank>the<S2SV_blank>eCryptfs<S2SV_blank>README\\\\n\" ) ; goto out ; } if ( ! cipher_name_set ) { int cipher_name_len = strlen ( ECRYPTFS_DEFAULT_CIPHER ) ; BUG_ON ( cipher_name_len >= ECRYPTFS_MAX_CIPHER_NAME_SIZE ) ; strcpy ( mount_crypt_stat -> global_default_cipher_name , ECRYPTFS_DEFAULT_CIPHER ) ; } if ( ( mount_crypt_stat -> flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES ) && ! fn_cipher_name_set ) strcpy ( mount_crypt_stat -> global_default_fn_cipher_name , mount_crypt_stat -> global_default_cipher_name ) ; if ( ! cipher_key_bytes_set ) mount_crypt_stat -> global_default_cipher_key_size = 0 ; if ( ( mount_crypt_stat -> flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES ) && ! fn_cipher_key_bytes_set ) mount_crypt_stat -> global_default_fn_cipher_key_bytes = mount_crypt_stat -> global_default_cipher_key_size ; mutex_lock ( & key_tfm_list_mutex ) ; if ( ! ecryptfs_tfm_exists ( mount_crypt_stat -> global_default_cipher_name , NULL ) ) { rc = ecryptfs_add_new_key_tfm ( NULL , mount_crypt_stat -> global_default_cipher_name , mount_crypt_stat -> global_default_cipher_key_size ) ; if ( rc ) { printk ( KERN_ERR \"Error<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>\" \"cipher<S2SV_blank>with<S2SV_blank>name<S2SV_blank>=<S2SV_blank>[%s]<S2SV_blank>and<S2SV_blank>key<S2SV_blank>size<S2SV_blank>=<S2SV_blank>[%td];<S2SV_blank>\" \"rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , mount_crypt_stat -> global_default_cipher_name , mount_crypt_stat -> global_default_cipher_key_size , rc ) ; rc = - EINVAL ; mutex_unlock ( & key_tfm_list_mutex ) ; goto out ; } } if ( ( mount_crypt_stat -> flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES ) && ! ecryptfs_tfm_exists ( mount_crypt_stat -> global_default_fn_cipher_name , NULL ) ) { rc = ecryptfs_add_new_key_tfm ( NULL , mount_crypt_stat -> global_default_fn_cipher_name , mount_crypt_stat -> global_default_fn_cipher_key_bytes ) ; if ( rc ) { printk ( KERN_ERR \"Error<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>\" \"cipher<S2SV_blank>with<S2SV_blank>name<S2SV_blank>=<S2SV_blank>[%s]<S2SV_blank>and<S2SV_blank>key<S2SV_blank>size<S2SV_blank>=<S2SV_blank>[%td];<S2SV_blank>\" \"rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , mount_crypt_stat -> global_default_fn_cipher_name , mount_crypt_stat -> global_default_fn_cipher_key_bytes , rc ) ; rc = - EINVAL ; mutex_unlock ( & key_tfm_list_mutex ) ; goto out ; } } mutex_unlock ( & key_tfm_list_mutex ) ; rc = ecryptfs_init_global_auth_toks ( mount_crypt_stat ) ; if ( rc ) printk ( KERN_WARNING \"One<S2SV_blank>or<S2SV_blank>more<S2SV_blank>global<S2SV_blank>auth<S2SV_blank>toks<S2SV_blank>could<S2SV_blank>not<S2SV_blank>\" \"properly<S2SV_blank>register;<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , rc ) ; out : return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * options , uid_t * check_ruid <S2SV_ModStart> * fn_cipher_key_bytes_src ; * check_ruid = 0 ; <S2SV_ModStart> break ; case ecryptfs_opt_check_dev_ruid : * check_ruid = 1 ; break ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static int send_results ( struct iperf_test * test ) { int r = 0 ; cJSON * j ; cJSON * j_streams ; struct iperf_stream * sp ; cJSON * j_stream ; int sender_has_retransmits ; iperf_size_t bytes_transferred ; int retransmits ; j = cJSON_CreateObject ( ) ; if ( j == NULL ) { i_errno = IEPACKAGERESULTS ; r = - 1 ; } else { <S2SV_StartBug> cJSON_AddFloatToObject ( j , \"cpu_util_total\" , test -> cpu_util [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> cJSON_AddFloatToObject ( j , \"cpu_util_user\" , test -> cpu_util [ 1 ] ) ; <S2SV_EndBug> <S2SV_StartBug> cJSON_AddFloatToObject ( j , \"cpu_util_system\" , test -> cpu_util [ 2 ] ) ; <S2SV_EndBug> if ( ! test -> sender ) sender_has_retransmits = - 1 ; else sender_has_retransmits = test -> sender_has_retransmits ; <S2SV_StartBug> cJSON_AddIntToObject ( j , \"sender_has_retransmits\" , sender_has_retransmits ) ; <S2SV_EndBug> if ( test -> role == 's' && test -> get_server_output ) { if ( test -> json_output ) { cJSON_AddItemReferenceToObject ( j , \"server_output_json\" , test -> json_top ) ; } else { size_t buflen = 0 ; struct iperf_textline * t ; TAILQ_FOREACH ( t , & ( test -> server_output_list ) , textlineentries ) { buflen += strlen ( t -> line ) ; } char * output = calloc ( buflen + 1 , 1 ) ; TAILQ_FOREACH ( t , & ( test -> server_output_list ) , textlineentries ) { strncat ( output , t -> line , buflen ) ; buflen -= strlen ( t -> line ) ; } cJSON_AddStringToObject ( j , \"server_output_text\" , output ) ; } } j_streams = cJSON_CreateArray ( ) ; if ( j_streams == NULL ) { i_errno = IEPACKAGERESULTS ; r = - 1 ; } else { cJSON_AddItemToObject ( j , \"streams\" , j_streams ) ; SLIST_FOREACH ( sp , & test -> streams , streams ) { j_stream = cJSON_CreateObject ( ) ; if ( j_stream == NULL ) { i_errno = IEPACKAGERESULTS ; r = - 1 ; } else { cJSON_AddItemToArray ( j_streams , j_stream ) ; bytes_transferred = test -> sender ? sp -> result -> bytes_sent : sp -> result -> bytes_received ; retransmits = ( test -> sender && test -> sender_has_retransmits ) ? sp -> result -> stream_retrans : - 1 ; <S2SV_StartBug> cJSON_AddIntToObject ( j_stream , \"id\" , sp -> id ) ; <S2SV_EndBug> <S2SV_StartBug> cJSON_AddIntToObject ( j_stream , \"bytes\" , bytes_transferred ) ; <S2SV_EndBug> <S2SV_StartBug> cJSON_AddIntToObject ( j_stream , \"retransmits\" , retransmits ) ; <S2SV_EndBug> <S2SV_StartBug> cJSON_AddFloatToObject ( j_stream , \"jitter\" , sp -> jitter ) ; <S2SV_EndBug> <S2SV_StartBug> cJSON_AddIntToObject ( j_stream , \"errors\" , sp -> cnt_error ) ; <S2SV_EndBug> <S2SV_StartBug> cJSON_AddIntToObject ( j_stream , \"packets\" , sp -> packet_count ) ; <S2SV_EndBug> } } if ( r == 0 && test -> debug ) { printf ( \"send_results\\\\n%s\\\\n\" , cJSON_Print ( j ) ) ; } if ( r == 0 && JSON_write ( test -> ctrl_sck , j ) < 0 ) { i_errno = IESENDRESULTS ; r = - 1 ; } } cJSON_Delete ( j ) ; } return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { cJSON_AddNumberToObject <S2SV_ModEnd> ( j , <S2SV_ModStart> ] ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j , <S2SV_ModStart> ] ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j , <S2SV_ModStart> -> sender_has_retransmits ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j , <S2SV_ModStart> - 1 ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j_stream , <S2SV_ModStart> id ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j_stream , <S2SV_ModStart> bytes_transferred ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j_stream , <S2SV_ModStart> retransmits ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j_stream , <S2SV_ModStart> jitter ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j_stream , <S2SV_ModStart> cnt_error ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j_stream ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20748\n\n```\nCWE-787 static void ReadReason ( rfbClient * client ) { uint32_t reasonLen ; char * reason ; if ( ! ReadFromRFBServer ( client , ( char * ) & reasonLen , 4 ) ) return ; reasonLen = rfbClientSwap32IfLE ( reasonLen ) ; <S2SV_StartBug> reason = malloc ( ( uint64_t ) reasonLen + 1 ) ; <S2SV_EndBug> if ( ! ReadFromRFBServer ( client , reason , reasonLen ) ) { free ( reason ) ; return ; } reason [ reasonLen ] = 0 ; rfbClientLog ( \"VNC<S2SV_blank>connection<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , reason ) ; free ( reason ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> reasonLen ) ; if ( reasonLen > 1 << 20 ) { rfbClientLog ( \"VNC<S2SV_blank>connection<S2SV_blank>failed,<S2SV_blank>but<S2SV_blank>sent<S2SV_blank>reason<S2SV_blank>length<S2SV_blank>of<S2SV_blank>%u<S2SV_blank>exceeds<S2SV_blank>limit<S2SV_blank>of<S2SV_blank>1MB\" , ( unsigned int ) reasonLen ) ; return ; } <S2SV_ModStart> = malloc ( <S2SV_ModEnd> reasonLen + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4440\n\n```\nCWE-264 static void vmx_refresh_apicv_exec_ctrl ( struct kvm_vcpu * vcpu ) { struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; vmcs_write32 ( PIN_BASED_VM_EXEC_CONTROL , vmx_pin_based_exec_ctrl ( vmx ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( cpu_has_secondary_exec_ctrls ( ) ) { if ( kvm_vcpu_apicv_active ( vcpu ) ) vmcs_set_bits ( SECONDARY_VM_EXEC_CONTROL , SECONDARY_EXEC_APIC_REGISTER_VIRT | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY ) ; else vmcs_clear_bits ( SECONDARY_VM_EXEC_CONTROL , SECONDARY_EXEC_APIC_REGISTER_VIRT | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY ) ; } if ( cpu_has_vmx_msr_bitmap ( ) ) vmx_set_msr_bitmap ( vcpu ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14991\n\n```\nCWE-200 static void sg_fill_request_table ( Sg_fd * sfp , sg_req_info_t * rinfo ) { Sg_request * srp ; int val ; unsigned int ms ; val = 0 ; list_for_each_entry ( srp , & sfp -> rq_list , entry ) { if ( val > SG_MAX_QUEUE ) break ; <S2SV_StartBug> memset ( & rinfo [ val ] , 0 , SZ_SG_REQ_INFO ) ; <S2SV_EndBug> rinfo [ val ] . req_state = srp -> done + 1 ; rinfo [ val ] . problem = srp -> header . masked_status & srp -> header . host_status & srp -> header . driver_status ; if ( srp -> done ) rinfo [ val ] . duration = srp -> header . duration ; else { ms = jiffies_to_msecs ( jiffies ) ; rinfo [ val ] . duration = ( ms > srp -> header . duration ) ? ( ms - srp -> header . duration ) : 0 ; } rinfo [ val ] . orphan = srp -> orphan ; rinfo [ val ] . sg_io_owned = srp -> sg_io_owned ; rinfo [ val ] . pack_id = srp -> header . pack_id ; rinfo [ val ] . usr_ptr = srp -> header . usr_ptr ; val ++ ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; <S2SV_ModEnd> rinfo [ val\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18021\n\n```\nCWE-20 static int set_core_reg ( struct kvm_vcpu * vcpu , const struct kvm_one_reg * reg ) { __u32 __user * uaddr = ( __u32 __user * ) ( unsigned long ) reg -> addr ; struct kvm_regs * regs = vcpu_gp_regs ( vcpu ) ; int nr_regs = sizeof ( * regs ) / sizeof ( __u32 ) ; __uint128_t tmp ; void * valp = & tmp ; u64 off ; int err = 0 ; off = core_reg_offset_from_id ( reg -> id ) ; if ( off >= nr_regs || ( off + ( KVM_REG_SIZE ( reg -> id ) / sizeof ( __u32 ) ) ) >= nr_regs ) return - ENOENT ; if ( validate_core_offset ( reg ) ) return - EINVAL ; if ( KVM_REG_SIZE ( reg -> id ) > sizeof ( tmp ) ) return - EINVAL ; if ( copy_from_user ( valp , uaddr , KVM_REG_SIZE ( reg -> id ) ) ) { err = - EFAULT ; goto out ; } if ( off == KVM_REG_ARM_CORE_REG ( regs . pstate ) ) { <S2SV_StartBug> u32 mode = ( * ( u32 * ) valp ) & PSR_AA32_MODE_MASK ; <S2SV_EndBug> switch ( mode ) { case PSR_AA32_MODE_USR : <S2SV_StartBug> case PSR_AA32_MODE_FIQ : <S2SV_EndBug> case PSR_AA32_MODE_IRQ : case PSR_AA32_MODE_SVC : case PSR_AA32_MODE_ABT : case PSR_AA32_MODE_UND : <S2SV_StartBug> case PSR_MODE_EL0t : <S2SV_EndBug> case PSR_MODE_EL1t : <S2SV_StartBug> case PSR_MODE_EL1h : <S2SV_EndBug> break ; default : err = - EINVAL ; goto out ; } } memcpy ( ( u32 * ) regs + off , valp , KVM_REG_SIZE ( reg -> id ) ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { u64 <S2SV_ModEnd> mode = ( <S2SV_ModStart> ( * ( u64 <S2SV_ModEnd> * ) valp <S2SV_ModStart> case PSR_AA32_MODE_USR : if ( ! system_supports_32bit_el0 ( ) ) return - EINVAL ; break ; <S2SV_ModStart> case PSR_AA32_MODE_UND : if ( ! vcpu_el1_is_32bit ( vcpu ) ) return - EINVAL ; break ; <S2SV_ModStart> case PSR_MODE_EL1h : if ( vcpu_el1_is_32bit ( vcpu ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int64_t rd_pick_intra_sby_mode ( VP9_COMP * cpi , MACROBLOCK * x , int * rate , int * rate_tokenonly , int64_t * distortion , int * skippable , BLOCK_SIZE bsize , <S2SV_StartBug> int64_t tx_cache [ TX_MODES ] , <S2SV_EndBug> int64_t best_rd ) { <S2SV_StartBug> MB_PREDICTION_MODE mode ; <S2SV_EndBug> MB_PREDICTION_MODE mode_selected = DC_PRED ; MACROBLOCKD * const xd = & x -> e_mbd ; MODE_INFO * const mic = xd -> mi [ 0 ] ; int this_rate , this_rate_tokenonly , s ; int64_t this_distortion , this_rd ; TX_SIZE best_tx = TX_4X4 ; <S2SV_StartBug> int i ; <S2SV_EndBug> int * bmode_costs = x -> mbmode_cost ; if ( cpi -> sf . tx_size_search_method == USE_FULL_RD ) for ( i = 0 ; i < TX_MODES ; i ++ ) tx_cache [ i ] = INT64_MAX ; for ( mode = DC_PRED ; mode <= TM_PRED ; mode ++ ) { int64_t local_tx_cache [ TX_MODES ] ; MODE_INFO * above_mi = xd -> mi [ - xd -> mi_stride ] ; MODE_INFO * left_mi = xd -> left_available ? xd -> mi [ - 1 ] : NULL ; if ( ! ( cpi -> sf . intra_y_mode_mask [ max_txsize_lookup [ bsize ] ] & ( 1 << mode ) ) ) continue ; if ( cpi -> common . frame_type == KEY_FRAME ) { const MB_PREDICTION_MODE A = vp9_above_block_mode ( mic , above_mi , 0 ) ; const MB_PREDICTION_MODE L = vp9_left_block_mode ( mic , left_mi , 0 ) ; bmode_costs = x -> y_mode_costs [ A ] [ L ] ; <S2SV_StartBug> } <S2SV_EndBug> mic -> mbmi . mode = mode ; <S2SV_StartBug> intra_super_block_yrd ( cpi , x , & this_rate_tokenonly , & this_distortion , <S2SV_EndBug> <S2SV_StartBug> & s , NULL , bsize , local_tx_cache , best_rd ) ; <S2SV_EndBug> if ( this_rate_tokenonly == INT_MAX ) continue ; this_rate = this_rate_tokenonly + bmode_costs [ mode ] ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , this_rate , this_distortion ) ; if ( this_rd < best_rd ) { mode_selected = mode ; best_rd = this_rd ; best_tx = mic -> mbmi . tx_size ; * rate = this_rate ; * rate_tokenonly = this_rate_tokenonly ; * distortion = this_distortion ; * skippable = s ; } <S2SV_StartBug> if ( cpi -> sf . tx_size_search_method == USE_FULL_RD && this_rd < INT64_MAX ) { <S2SV_EndBug> for ( i = 0 ; i < TX_MODES && local_tx_cache [ i ] < INT64_MAX ; i ++ ) { const int64_t adj_rd = this_rd + local_tx_cache [ i ] - local_tx_cache [ cpi -> common . tx_mode ] ; if ( adj_rd < tx_cache [ i ] ) { tx_cache [ i ] = adj_rd ; } } } } mic -> mbmi . mode = mode_selected ; mic -> mbmi . tx_size = best_tx ; return best_rd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bsize , int64_t <S2SV_ModEnd> best_rd ) { <S2SV_ModStart> best_rd ) { PREDICTION_MODE mode ; PREDICTION_MODE <S2SV_ModEnd> mode_selected = DC_PRED <S2SV_ModStart> TX_4X4 ; int * bmode_costs ; const MODE_INFO * above_mi = xd -> above_mi ; const MODE_INFO * left_mi = xd -> left_mi ; const PREDICTION_MODE A = vp9_above_block_mode ( mic , above_mi , 0 ) ; const PREDICTION_MODE L = vp9_left_block_mode ( mic , left_mi , 0 ) ; bmode_costs = cpi <S2SV_ModEnd> -> y_mode_costs [ <S2SV_ModStart> L ] ; memset ( x -> skip_txfm , SKIP_TXFM_NONE , sizeof ( x -> skip_txfm ) ) ; for ( mode = DC_PRED ; mode <= TM_PRED ; mode ++ ) { if ( cpi -> sf . use_nonrd_pick_mode ) { if ( conditional_skipintra ( mode , mode_selected ) ) continue ; if ( * skippable ) break ; <S2SV_ModStart> = mode ; super_block_yrd <S2SV_ModEnd> ( cpi , <S2SV_ModStart> NULL , bsize <S2SV_ModEnd> , best_rd ) <S2SV_ModStart> s ; } <S2SV_ModEnd> } mic ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7455\n\n```\nCWE-000 static cmsPipeline * DefaultICCintents ( cmsContext ContextID , cmsUInt32Number nProfiles , cmsUInt32Number TheIntents [ ] , cmsHPROFILE hProfiles [ ] , cmsBool BPC [ ] , cmsFloat64Number AdaptationStates [ ] , cmsUInt32Number dwFlags ) { cmsPipeline * Lut = NULL ; cmsPipeline * Result ; cmsHPROFILE hProfile ; cmsMAT3 m ; cmsVEC3 off ; cmsColorSpaceSignature ColorSpaceIn , ColorSpaceOut , CurrentColorSpace ; cmsProfileClassSignature ClassSig ; cmsUInt32Number i , Intent ; if ( nProfiles == 0 ) return NULL ; Result = cmsPipelineAlloc ( ContextID , 0 , 0 ) ; if ( Result == NULL ) return NULL ; CurrentColorSpace = cmsGetColorSpace ( hProfiles [ 0 ] ) ; for ( i = 0 ; i < nProfiles ; i ++ ) { cmsBool lIsDeviceLink , lIsInput ; hProfile = hProfiles [ i ] ; ClassSig = cmsGetDeviceClass ( hProfile ) ; lIsDeviceLink = ( ClassSig == cmsSigLinkClass || ClassSig == cmsSigAbstractClass ) ; if ( ( i == 0 ) && ! lIsDeviceLink ) { lIsInput = TRUE ; } else { lIsInput = ( CurrentColorSpace != cmsSigXYZData ) && ( CurrentColorSpace != cmsSigLabData ) ; } Intent = TheIntents [ i ] ; if ( lIsInput || lIsDeviceLink ) { ColorSpaceIn = cmsGetColorSpace ( hProfile ) ; ColorSpaceOut = cmsGetPCS ( hProfile ) ; } else { ColorSpaceIn = cmsGetPCS ( hProfile ) ; ColorSpaceOut = cmsGetColorSpace ( hProfile ) ; } if ( ! ColorSpaceIsCompatible ( ColorSpaceIn , CurrentColorSpace ) ) { cmsSignalError ( ContextID , cmsERROR_COLORSPACE_CHECK , \"ColorSpace<S2SV_blank>mismatch\" ) ; goto Error ; } if ( lIsDeviceLink || ( ( ClassSig == cmsSigNamedColorClass ) && ( nProfiles == 1 ) ) ) { Lut = _cmsReadDevicelinkLUT ( hProfile , Intent ) ; if ( Lut == NULL ) goto Error ; if ( ClassSig == cmsSigAbstractClass && i > 0 ) { if ( ! ComputeConversion ( i , hProfiles , Intent , BPC [ i ] , AdaptationStates [ i ] , & m , & off ) ) goto Error ; } else { _cmsMAT3identity ( & m ) ; _cmsVEC3init ( & off , 0 , 0 , 0 ) ; } if ( ! AddConversion ( Result , CurrentColorSpace , ColorSpaceIn , & m , & off ) ) goto Error ; } else { if ( lIsInput ) { Lut = _cmsReadInputLUT ( hProfile , Intent ) ; if ( Lut == NULL ) goto Error ; } else { Lut = _cmsReadOutputLUT ( hProfile , Intent ) ; if ( Lut == NULL ) goto Error ; if ( ! ComputeConversion ( i , hProfiles , Intent , BPC [ i ] , AdaptationStates [ i ] , & m , & off ) ) goto Error ; if ( ! AddConversion ( Result , CurrentColorSpace , ColorSpaceIn , & m , & off ) ) goto Error ; } } if ( ! cmsPipelineCat ( Result , Lut ) ) goto Error ; cmsPipelineFree ( Lut ) ; <S2SV_StartBug> CurrentColorSpace = ColorSpaceOut ; <S2SV_EndBug> } return Result ; Error : <S2SV_StartBug> cmsPipelineFree ( Lut ) ; <S2SV_EndBug> if ( Result != NULL ) cmsPipelineFree ( Result ) ; return NULL ; cmsUNUSED_PARAMETER ( dwFlags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Lut ) ; Lut = NULL ; <S2SV_ModStart> ; Error : if ( Lut != NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9586\n\n```\nCWE-119 static int dprintf_formatf ( void * data , int ( * stream ) ( int , FILE * ) , const char * format , va_list ap_save ) { const char * digits = lower_digits ; char * f ; int done = 0 ; long param ; long param_num = 0 ; va_stack_t vto [ MAX_PARAMETERS ] ; char * endpos [ MAX_PARAMETERS ] ; char * * end ; char work [ BUFFSIZE ] ; va_stack_t * p ; char * workend = & work [ sizeof ( work ) - 2 ] ; if ( dprintf_Pass1 ( format , vto , endpos , ap_save ) ) return - 1 ; end = & endpos [ 0 ] ; f = ( char * ) format ; while ( * f != '\\\\0' ) { int is_alt ; long width ; long prec ; int is_neg ; long base ; mp_uintmax_t num ; mp_intmax_t signed_num ; char * w ; if ( * f != '%' ) { do { OUTCHAR ( * f ) ; } while ( * ++ f && ( '%' != * f ) ) ; continue ; } ++ f ; if ( * f == '%' ) { ++ f ; OUTCHAR ( '%' ) ; continue ; } param = dprintf_DollarString ( f , & f ) ; if ( ! param ) param = param_num ; else -- param ; param_num ++ ; p = & vto [ param ] ; if ( p -> flags & FLAGS_WIDTHPARAM ) { width = ( long ) vto [ p -> width ] . data . num . as_signed ; param_num ++ ; if ( width < 0 ) { width = - width ; p -> flags |= FLAGS_LEFT ; p -> flags &= ~ FLAGS_PAD_NIL ; } } else width = p -> width ; if ( p -> flags & FLAGS_PRECPARAM ) { prec = ( long ) vto [ p -> precision ] . data . num . as_signed ; param_num ++ ; if ( prec < 0 ) prec = - 1 ; } else if ( p -> flags & FLAGS_PREC ) prec = p -> precision ; else prec = - 1 ; is_alt = ( p -> flags & FLAGS_ALT ) ? 1 : 0 ; switch ( p -> type ) { case FORMAT_INT : num = p -> data . num . as_unsigned ; if ( p -> flags & FLAGS_CHAR ) { if ( ! ( p -> flags & FLAGS_LEFT ) ) while ( -- width > 0 ) OUTCHAR ( '<S2SV_blank>' ) ; OUTCHAR ( ( char ) num ) ; if ( p -> flags & FLAGS_LEFT ) while ( -- width > 0 ) OUTCHAR ( '<S2SV_blank>' ) ; break ; } if ( p -> flags & FLAGS_OCTAL ) { base = 8 ; goto unsigned_number ; } else if ( p -> flags & FLAGS_HEX ) { digits = ( p -> flags & FLAGS_UPPER ) ? upper_digits : lower_digits ; base = 16 ; goto unsigned_number ; } else if ( p -> flags & FLAGS_UNSIGNED ) { base = 10 ; goto unsigned_number ; } base = 10 ; is_neg = ( p -> data . num . as_signed < ( mp_intmax_t ) 0 ) ? 1 : 0 ; if ( is_neg ) { signed_num = p -> data . num . as_signed + ( mp_intmax_t ) 1 ; signed_num = - signed_num ; num = ( mp_uintmax_t ) signed_num ; num += ( mp_uintmax_t ) 1 ; } goto number ; unsigned_number : is_neg = 0 ; number : if ( prec == - 1 ) prec = 1 ; w = workend ; while ( num > 0 ) { * w -- = digits [ num % base ] ; num /= base ; } width -= ( long ) ( workend - w ) ; prec -= ( long ) ( workend - w ) ; if ( is_alt && base == 8 && prec <= 0 ) { * w -- = '0' ; -- width ; } if ( prec > 0 ) { width -= prec ; while ( prec -- > 0 ) * w -- = '0' ; } if ( is_alt && base == 16 ) width -= 2 ; if ( is_neg || ( p -> flags & FLAGS_SHOWSIGN ) || ( p -> flags & FLAGS_SPACE ) ) -- width ; if ( ! ( p -> flags & FLAGS_LEFT ) && ! ( p -> flags & FLAGS_PAD_NIL ) ) while ( width -- > 0 ) OUTCHAR ( '<S2SV_blank>' ) ; if ( is_neg ) OUTCHAR ( '-' ) ; else if ( p -> flags & FLAGS_SHOWSIGN ) OUTCHAR ( '+' ) ; else if ( p -> flags & FLAGS_SPACE ) OUTCHAR ( '<S2SV_blank>' ) ; if ( is_alt && base == 16 ) { OUTCHAR ( '0' ) ; if ( p -> flags & FLAGS_UPPER ) OUTCHAR ( 'X' ) ; else OUTCHAR ( 'x' ) ; } if ( ! ( p -> flags & FLAGS_LEFT ) && ( p -> flags & FLAGS_PAD_NIL ) ) while ( width -- > 0 ) OUTCHAR ( '0' ) ; while ( ++ w <= workend ) { OUTCHAR ( * w ) ; } if ( p -> flags & FLAGS_LEFT ) while ( width -- > 0 ) OUTCHAR ( '<S2SV_blank>' ) ; break ; case FORMAT_STRING : { static const char null [ ] = \"(nil)\" ; const char * str ; size_t len ; str = ( char * ) p -> data . str ; if ( str == NULL ) { if ( prec == - 1 || prec >= ( long ) sizeof ( null ) - 1 ) { str = null ; len = sizeof ( null ) - 1 ; p -> flags &= ( ~ FLAGS_ALT ) ; } else { str = \"\" ; len = 0 ; } } else if ( prec != - 1 ) len = ( size_t ) prec ; else len = strlen ( str ) ; width -= ( len > LONG_MAX ) ? LONG_MAX : ( long ) len ; if ( p -> flags & FLAGS_ALT ) OUTCHAR ( \\'\"\\' ) ; if ( ! ( p -> flags & FLAGS_LEFT ) ) while ( width -- > 0 ) OUTCHAR ( '<S2SV_blank>' ) ; while ( ( len -- > 0 ) && * str ) OUTCHAR ( * str ++ ) ; if ( p -> flags & FLAGS_LEFT ) while ( width -- > 0 ) OUTCHAR ( '<S2SV_blank>' ) ; if ( p -> flags & FLAGS_ALT ) OUTCHAR ( \\'\"\\' ) ; } break ; case FORMAT_PTR : { void * ptr ; ptr = ( void * ) p -> data . ptr ; if ( ptr != NULL ) { base = 16 ; digits = ( p -> flags & FLAGS_UPPER ) ? upper_digits : lower_digits ; is_alt = 1 ; num = ( size_t ) ptr ; is_neg = 0 ; goto number ; } else { static const char strnil [ ] = \"(nil)\" ; const char * point ; width -= ( long ) ( sizeof ( strnil ) - 1 ) ; if ( p -> flags & FLAGS_LEFT ) while ( width -- > 0 ) OUTCHAR ( '<S2SV_blank>' ) ; for ( point = strnil ; * point != '\\\\0' ; ++ point ) OUTCHAR ( * point ) ; if ( ! ( p -> flags & FLAGS_LEFT ) ) while ( width -- > 0 ) OUTCHAR ( '<S2SV_blank>' ) ; } } break ; case FORMAT_DOUBLE : { char formatbuf [ 32 ] = \"%\" ; char * fptr = & formatbuf [ 1 ] ; size_t left = sizeof ( formatbuf ) - strlen ( formatbuf ) ; int len ; width = - 1 ; if ( p -> flags & FLAGS_WIDTH ) width = p -> width ; else if ( p -> flags & FLAGS_WIDTHPARAM ) width = ( long ) vto [ p -> width ] . data . num . as_signed ; prec = - 1 ; if ( p -> flags & FLAGS_PREC ) prec = p -> precision ; else if ( p -> flags & FLAGS_PRECPARAM ) prec = ( long ) vto [ p -> precision ] . data . num . as_signed ; if ( p -> flags & FLAGS_LEFT ) * fptr ++ = '-' ; if ( p -> flags & FLAGS_SHOWSIGN ) * fptr ++ = '+' ; if ( p -> flags & FLAGS_SPACE ) * fptr ++ = '<S2SV_blank>' ; if ( p -> flags & FLAGS_ALT ) * fptr ++ = '#' ; * fptr = 0 ; if ( width >= 0 ) { <S2SV_StartBug> len = curl_msnprintf ( fptr , left , \"%ld\" , width ) ; <S2SV_EndBug> fptr += len ; left -= len ; } if ( prec >= 0 ) { <S2SV_StartBug> len = curl_msnprintf ( fptr , left , \".%ld\" , prec ) ; <S2SV_EndBug> fptr += len ; } if ( p -> flags & FLAGS_LONG ) * fptr ++ = 'l' ; if ( p -> flags & FLAGS_FLOATE ) * fptr ++ = ( char ) ( ( p -> flags & FLAGS_UPPER ) ? 'E' : 'e' ) ; else if ( p -> flags & FLAGS_FLOATG ) * fptr ++ = ( char ) ( ( p -> flags & FLAGS_UPPER ) ? 'G' : 'g' ) ; else * fptr ++ = 'f' ; * fptr = 0 ; ( sprintf ) ( work , formatbuf , p -> data . dnum ) ; <S2SV_StartBug> for ( fptr = work ; * fptr ; fptr ++ ) <S2SV_EndBug> OUTCHAR ( * fptr ) ; } break ; case FORMAT_INTPTR : # ifdef HAVE_LONG_LONG_TYPE if ( p -> flags & FLAGS_LONGLONG ) * ( LONG_LONG_TYPE * ) p -> data . ptr = ( LONG_LONG_TYPE ) done ; else # endif if ( p -> flags & FLAGS_LONG ) * ( long * ) p -> data . ptr = ( long ) done ; else if ( ! ( p -> flags & FLAGS_SHORT ) ) * ( int * ) p -> data . ptr = ( int ) done ; else * ( short * ) p -> data . ptr = ( short ) done ; break ; default : break ; } f = * end ++ ; } return done ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( width >= ( long ) sizeof ( work ) ) width = sizeof ( work ) - 1 ; <S2SV_ModStart> 0 ) { size_t maxprec = sizeof ( work ) - 2 ; double val = p -> data . dnum ; while ( val >= 10.0 ) { val /= 10 ; maxprec -- ; } if ( prec > ( long ) maxprec ) prec = maxprec - 1 ; <S2SV_ModStart> dnum ) ; # ifdef CURLDEBUG assert ( strlen ( work ) <= sizeof ( work ) ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13029\n\n```\nCWE-125 static int print_lcp_config_options ( netdissect_options * ndo , const u_char * p , int length ) { int len , opt ; if ( length < 2 ) return 0 ; ND_TCHECK2 ( * p , 2 ) ; len = p [ 1 ] ; opt = p [ 0 ] ; if ( length < len ) return 0 ; if ( len < 2 ) { if ( ( opt >= LCPOPT_MIN ) && ( opt <= LCPOPT_MAX ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>2)\" , lcpconfopts [ opt ] , opt , len ) ) ; else ND_PRINT ( ( ndo , \"\\\\n\\\\tunknown<S2SV_blank>LCP<S2SV_blank>option<S2SV_blank>0x%02x\" , opt ) ) ; return 0 ; } if ( ( opt >= LCPOPT_MIN ) && ( opt <= LCPOPT_MAX ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u\" , lcpconfopts [ opt ] , opt , len ) ) ; else { ND_PRINT ( ( ndo , \"\\\\n\\\\tunknown<S2SV_blank>LCP<S2SV_blank>option<S2SV_blank>0x%02x\" , opt ) ) ; return len ; } switch ( opt ) { case LCPOPT_VEXT : if ( len < 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>6)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 3 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>Vendor:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( oui_values , \"Unknown\" , EXTRACT_24BITS ( p + 2 ) ) , EXTRACT_24BITS ( p + 2 ) ) ) ; # if 0 ND_TCHECK ( p [ 5 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>kind:<S2SV_blank>0x%02x\" , p [ 5 ] ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Value:<S2SV_blank>0x\" ) ) ; for ( i = 0 ; i < len - 6 ; i ++ ) { ND_TCHECK ( p [ 6 + i ] ) ; ND_PRINT ( ( ndo , \"%02x\" , p [ 6 + i ] ) ) ; } # endif break ; case LCPOPT_MRU : if ( len != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>4)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>%u\" , EXTRACT_16BITS ( p + 2 ) ) ) ; break ; case LCPOPT_ACCM : if ( len != 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>6)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( p + 2 ) ) ) ; break ; case LCPOPT_AP : if ( len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>%s\" , tok2str ( ppptype2str , \"Unknown<S2SV_blank>Auth<S2SV_blank>Proto<S2SV_blank>(0x04x)\" , EXTRACT_16BITS ( p + 2 ) ) ) ) ; switch ( EXTRACT_16BITS ( p + 2 ) ) { case PPP_CHAP : ND_TCHECK ( p [ 4 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , tok2str ( authalg_values , \"Unknown<S2SV_blank>Auth<S2SV_blank>Alg<S2SV_blank>%u\" , p [ 4 ] ) ) ) ; break ; case PPP_PAP : case PPP_EAP : case PPP_SPAP : case PPP_SPAP_OLD : break ; default : print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , len ) ; } break ; case LCPOPT_QP : if ( len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> if ( EXTRACT_16BITS ( p + 2 ) == PPP_LQM ) ND_PRINT ( ( ndo , \":<S2SV_blank>LQR\" ) ) ; else ND_PRINT ( ( ndo , \":<S2SV_blank>unknown\" ) ) ; break ; case LCPOPT_MN : if ( len != 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>6)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( p + 2 ) ) ) ; break ; case LCPOPT_PFC : break ; case LCPOPT_ACFC : break ; case LCPOPT_LD : if ( len != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>4)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( p + 2 ) ) ) ; break ; case LCPOPT_CBACK : if ( len < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>3)\" ) ) ; return 0 ; } ND_PRINT ( ( ndo , \":<S2SV_blank>\" ) ) ; ND_TCHECK ( p [ 2 ] ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>Callback<S2SV_blank>Operation<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( ppp_callback_values , \"Unknown\" , p [ 2 ] ) , p [ 2 ] ) ) ; break ; case LCPOPT_MLMRRU : if ( len != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>4)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>%u\" , EXTRACT_16BITS ( p + 2 ) ) ) ; break ; case LCPOPT_MLED : if ( len < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>3)\" ) ) ; return 0 ; } ND_TCHECK ( p [ 2 ] ) ; switch ( p [ 2 ] ) { case MEDCLASS_NULL : ND_PRINT ( ( ndo , \":<S2SV_blank>Null\" ) ) ; break ; case MEDCLASS_LOCAL : ND_PRINT ( ( ndo , \":<S2SV_blank>Local\" ) ) ; break ; case MEDCLASS_IPV4 : if ( len != 7 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>7)\" ) ) ; return 0 ; } ND_TCHECK2 ( * ( p + 3 ) , 4 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>IPv4<S2SV_blank>%s\" , ipaddr_string ( ndo , p + 3 ) ) ) ; break ; case MEDCLASS_MAC : if ( len != 9 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>9)\" ) ) ; return 0 ; } ND_TCHECK2 ( * ( p + 3 ) , 6 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>MAC<S2SV_blank>%s\" , etheraddr_string ( ndo , p + 3 ) ) ) ; break ; case MEDCLASS_MNB : ND_PRINT ( ( ndo , \":<S2SV_blank>Magic-Num-Block\" ) ) ; break ; case MEDCLASS_PSNDN : ND_PRINT ( ( ndo , \":<S2SV_blank>PSNDN\" ) ) ; break ; default : ND_PRINT ( ( ndo , \":<S2SV_blank>Unknown<S2SV_blank>class<S2SV_blank>%u\" , p [ 2 ] ) ) ; break ; } break ; # if 0 case LCPOPT_DEP6 : case LCPOPT_FCSALT : case LCPOPT_SDP : case LCPOPT_NUMMODE : case LCPOPT_DEP12 : case LCPOPT_DEP14 : case LCPOPT_DEP15 : case LCPOPT_DEP16 : case LCPOPT_MLSSNHF : case LCPOPT_PROP : case LCPOPT_DCEID : case LCPOPT_MPP : case LCPOPT_LCPAOPT : case LCPOPT_COBS : case LCPOPT_PE : case LCPOPT_MLHF : case LCPOPT_I18N : case LCPOPT_SDLOS : case LCPOPT_PPPMUX : break ; # endif default : if ( ndo -> ndo_vflag < 2 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; return len ; trunc : ND_PRINT ( ( ndo , \"[|lcp]\" ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ; } ND_TCHECK_24BITS ( p + 2 <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> len ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ; <S2SV_ModStart> len ; } ND_TCHECK_32BITS ( p + 2 <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> len ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ; <S2SV_ModStart> 0 ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ; <S2SV_ModStart> 0 ; } ND_TCHECK_32BITS ( p + 2 <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> 0 ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ; <S2SV_ModStart> 0 ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7018\n\n```\nCWE-119 static int decode_cblk ( Jpeg2000DecoderContext * s , Jpeg2000CodingStyle * codsty , Jpeg2000T1Context * t1 , Jpeg2000Cblk * cblk , int width , int height , int bandpos ) { int passno = cblk -> npasses , pass_t = 2 , bpno = cblk -> nonzerobits - 1 , y ; int clnpass_cnt = 0 ; int bpass_csty_symbol = codsty -> cblk_style & JPEG2000_CBLK_BYPASS ; <S2SV_StartBug> int vert_causal_ctx_csty_symbol = codsty -> cblk_style & JPEG2000_CBLK_VSC ; <S2SV_EndBug> for ( y = 0 ; y < height ; y ++ ) memset ( t1 -> data [ y ] , 0 , width * sizeof ( * * t1 -> data ) ) ; if ( ! cblk -> length ) return 0 ; for ( y = 0 ; y < height + 2 ; y ++ ) memset ( t1 -> flags [ y ] , 0 , ( width + 2 ) * sizeof ( * * t1 -> flags ) ) ; cblk -> data [ cblk -> length ] = 0xff ; cblk -> data [ cblk -> length + 1 ] = 0xff ; ff_mqc_initdec ( & t1 -> mqc , cblk -> data ) ; while ( passno -- ) { switch ( pass_t ) { case 0 : decode_sigpass ( t1 , width , height , bpno + 1 , bandpos , bpass_csty_symbol && ( clnpass_cnt >= 4 ) , vert_causal_ctx_csty_symbol ) ; break ; case 1 : decode_refpass ( t1 , width , height , bpno + 1 ) ; if ( bpass_csty_symbol && clnpass_cnt >= 4 ) ff_mqc_initdec ( & t1 -> mqc , cblk -> data ) ; break ; case 2 : decode_clnpass ( s , t1 , width , height , bpno + 1 , bandpos , codsty -> cblk_style & JPEG2000_CBLK_SEGSYM , vert_causal_ctx_csty_symbol ) ; clnpass_cnt = clnpass_cnt + 1 ; if ( bpass_csty_symbol && clnpass_cnt >= 4 ) ff_mqc_initdec ( & t1 -> mqc , cblk -> data ) ; break ; } pass_t ++ ; if ( pass_t == 3 ) { bpno -- ; pass_t = 0 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cblk_style & JPEG2000_CBLK_VSC ; av_assert0 ( width <= JPEG2000_MAX_CBLKW ) ; av_assert0 ( height <= JPEG2000_MAX_CBLKH )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 int bt_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct sk_buff * skb ; size_t copied ; int err ; BT_DBG ( \"sock<S2SV_blank>%p<S2SV_blank>sk<S2SV_blank>%p<S2SV_blank>len<S2SV_blank>%zu\" , sock , sk , len ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) { <S2SV_StartBug> if ( sk -> sk_shutdown & RCV_SHUTDOWN ) { <S2SV_EndBug> msg -> msg_namelen = 0 ; return 0 ; } return err ; } copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( skb ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err == 0 ) { sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( bt_sk ( sk ) -> skb_msg_name ) bt_sk ( sk ) -> skb_msg_name ( skb , msg -> msg_name , & msg -> msg_namelen ) ; <S2SV_StartBug> else <S2SV_EndBug> msg -> msg_namelen = 0 ; } skb_free_datagram ( sk , skb ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & RCV_SHUTDOWN ) return 0 ; <S2SV_ModEnd> return err ; <S2SV_ModStart> msg_namelen ) ; <S2SV_ModEnd> } skb_free_datagram (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6418\n\n```\nCWE-399 static int ceph_x_proc_ticket_reply ( struct ceph_auth_client * ac , struct ceph_crypto_key * secret , void * buf , void * end ) { void * p = buf ; <S2SV_StartBug> char * dbuf ; <S2SV_EndBug> char * ticket_buf ; u8 reply_struct_v ; u32 num ; <S2SV_StartBug> int ret ; <S2SV_EndBug> dbuf = kmalloc ( TEMP_TICKET_BUF_LEN , GFP_NOFS ) ; if ( ! dbuf ) return - ENOMEM ; ret = - ENOMEM ; ticket_buf = kmalloc ( TEMP_TICKET_BUF_LEN , GFP_NOFS ) ; if ( ! ticket_buf ) goto out_dbuf ; ceph_decode_8_safe ( & p , end , reply_struct_v , bad ) ; if ( reply_struct_v != 1 ) return - EINVAL ; ceph_decode_32_safe ( & p , end , num , bad ) ; dout ( \"%d<S2SV_blank>tickets\\\\n\" , num ) ; while ( num -- ) { <S2SV_StartBug> ret = process_one_ticket ( ac , secret , & p , end , <S2SV_EndBug> dbuf , ticket_buf ) ; if ( ret ) <S2SV_StartBug> goto out ; <S2SV_EndBug> } ret = 0 ; out : kfree ( ticket_buf ) ; out_dbuf : kfree ( dbuf ) ; return ret ; bad : <S2SV_StartBug> ret = - EINVAL ; <S2SV_EndBug> <S2SV_StartBug> goto out ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = buf ; <S2SV_ModEnd> u8 reply_struct_v ; <S2SV_ModStart> ; int ret <S2SV_ModEnd> ; ceph_decode_8_safe ( <S2SV_ModStart> p , end <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( ret ) return ret ; } return 0 <S2SV_ModEnd> ; bad : <S2SV_ModStart> ; bad : return <S2SV_ModEnd> - EINVAL ; <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int validate_node ( node * tree ) { int type = TYPE ( tree ) ; int nch = NCH ( tree ) ; dfa * nt_dfa ; state * dfa_state ; int pos , arc ; assert ( ISNONTERMINAL ( type ) ) ; type -= NT_OFFSET ; if ( type >= _PyParser_Grammar . g_ndfas ) { PyErr_Format ( parser_error , \"Unrecognized<S2SV_blank>node<S2SV_blank>type<S2SV_blank>%d.\" , TYPE ( tree ) ) ; return 0 ; } nt_dfa = & _PyParser_Grammar . g_dfa [ type ] ; REQ ( tree , nt_dfa -> d_type ) ; dfa_state = & nt_dfa -> d_state [ nt_dfa -> d_initial ] ; for ( pos = 0 ; pos < nch ; ++ pos ) { node * ch = CHILD ( tree , pos ) ; int ch_type = TYPE ( ch ) ; <S2SV_StartBug> for ( arc = 0 ; arc < dfa_state -> s_narcs ; ++ arc ) { <S2SV_EndBug> short a_label = dfa_state -> s_arc [ arc ] . a_lbl ; assert ( a_label < _PyParser_Grammar . g_ll . ll_nlabels ) ; if ( _PyParser_Grammar . g_ll . ll_label [ a_label ] . lb_type == ch_type ) { if ( ISNONTERMINAL ( ch_type ) && ! validate_node ( ch ) ) return 0 ; dfa_state = & nt_dfa -> d_state [ dfa_state -> s_arc [ arc ] . a_arrow ] ; goto arc_found ; } } { short a_label = dfa_state -> s_arc -> a_lbl ; int next_type ; if ( ! a_label ) goto illegal_num_children ; next_type = _PyParser_Grammar . g_ll . ll_label [ a_label ] . lb_type ; if ( ISNONTERMINAL ( next_type ) ) PyErr_Format ( parser_error , \"Expected<S2SV_blank>node<S2SV_blank>type<S2SV_blank>%d,<S2SV_blank>got<S2SV_blank>%d.\" , next_type , ch_type ) ; else PyErr_Format ( parser_error , \"Illegal<S2SV_blank>terminal:<S2SV_blank>expected<S2SV_blank>%s.\" , _PyParser_TokenNames [ next_type ] ) ; return 0 ; } arc_found : continue ; } for ( arc = 0 ; arc < dfa_state -> s_narcs ; ++ arc ) { if ( ! dfa_state -> s_arc [ arc ] . a_lbl ) { return 1 ; } } illegal_num_children : PyErr_Format ( parser_error , \"Illegal<S2SV_blank>number<S2SV_blank>of<S2SV_blank>children<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>node.\" , nt_dfa -> d_name ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ch ) ; if ( ch_type == suite && TYPE ( tree ) == funcdef ) { ch_type = func_body_suite ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-755(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19924\n\n```\nCWE-755 static int codeCompare ( Parse * pParse , Expr * pLeft , Expr * pRight , int opcode , int in1 , int in2 , int dest , int jumpIfNull , int isCommuted ) { int p5 ; int addr ; <S2SV_StartBug> CollSeq * p4 ; <S2SV_EndBug> if ( isCommuted ) { p4 = sqlite3BinaryCompareCollSeq ( pParse , pRight , pLeft ) ; } else { p4 = sqlite3BinaryCompareCollSeq ( pParse , pLeft , pRight ) ; } p5 = binaryCompareP5 ( pLeft , pRight , jumpIfNull ) ; addr = sqlite3VdbeAddOp4 ( pParse -> pVdbe , opcode , in2 , dest , in1 , ( void * ) p4 , P4_COLLSEQ ) ; sqlite3VdbeChangeP5 ( pParse -> pVdbe , ( u8 ) p5 ) ; return addr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CollSeq * p4 ; if ( pParse -> nErr ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14734\n\n```\nCWE-416 static struct ucma_multicast * ucma_alloc_multicast ( struct ucma_context * ctx ) { struct ucma_multicast * mc ; mc = kzalloc ( sizeof ( * mc ) , GFP_KERNEL ) ; if ( ! mc ) return NULL ; mutex_lock ( & mut ) ; <S2SV_StartBug> mc -> id = idr_alloc ( & multicast_idr , mc , 0 , 0 , GFP_KERNEL ) ; <S2SV_EndBug> mutex_unlock ( & mut ) ; if ( mc -> id < 0 ) goto error ; mc -> ctx = ctx ; list_add_tail ( & mc -> list , & ctx -> mc_list ) ; return mc ; error : kfree ( mc ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & multicast_idr , NULL <S2SV_ModEnd> , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 static VarBit * bit_catenate ( VarBit * arg1 , VarBit * arg2 ) { VarBit * result ; int bitlen1 , bitlen2 , bytelen , bit1pad , bit2shift ; bits8 * pr , * pa ; bitlen1 = VARBITLEN ( arg1 ) ; <S2SV_StartBug> bitlen2 = VARBITLEN ( arg2 ) ; <S2SV_EndBug> bytelen = VARBITTOTALLEN ( bitlen1 + bitlen2 ) ; result = ( VarBit * ) palloc ( bytelen ) ; SET_VARSIZE ( result , bytelen ) ; VARBITLEN ( result ) = bitlen1 + bitlen2 ; memcpy ( VARBITS ( result ) , VARBITS ( arg1 ) , VARBITBYTES ( arg1 ) ) ; bit1pad = VARBITPAD ( arg1 ) ; if ( bit1pad == 0 ) { memcpy ( VARBITS ( result ) + VARBITBYTES ( arg1 ) , VARBITS ( arg2 ) , VARBITBYTES ( arg2 ) ) ; } else if ( bitlen2 > 0 ) { bit2shift = BITS_PER_BYTE - bit1pad ; pr = VARBITS ( result ) + VARBITBYTES ( arg1 ) - 1 ; for ( pa = VARBITS ( arg2 ) ; pa < VARBITEND ( arg2 ) ; pa ++ ) { * pr |= ( ( * pa >> bit2shift ) & BITMASK ) ; pr ++ ; if ( pr < VARBITEND ( result ) ) * pr = ( * pa << bit1pad ) & BITMASK ; } } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VARBITLEN ( arg2 ) ; if ( bitlen1 > VARBITMAXLEN - bitlen2 ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"bit<S2SV_blank>string<S2SV_blank>length<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , VARBITMAXLEN ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6537\n\n```\nCWE-200 static void copy_to_user_policy ( struct xfrm_policy * xp , struct xfrm_userpolicy_info * p , int dir ) <S2SV_StartBug> { <S2SV_EndBug> memcpy ( & p -> sel , & xp -> selector , sizeof ( p -> sel ) ) ; memcpy ( & p -> lft , & xp -> lft , sizeof ( p -> lft ) ) ; memcpy ( & p -> curlft , & xp -> curlft , sizeof ( p -> curlft ) ) ; p -> priority = xp -> priority ; p -> index = xp -> index ; p -> sel . family = xp -> family ; p -> dir = dir ; p -> action = xp -> action ; p -> flags = xp -> flags ; p -> share = XFRM_SHARE_ANY ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dir ) { memset ( p , 0 , sizeof ( * p ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5114\n\n```\nCWE-125 int fpm_log_write ( char * log_format ) { char * s , * b ; char buffer [ FPM_LOG_BUFFER + 1 ] ; int token , test ; size_t len , len2 ; struct fpm_scoreboard_proc_s proc , * proc_p ; struct fpm_scoreboard_s * scoreboard ; char tmp [ 129 ] ; char format [ 129 ] ; time_t now_epoch ; # ifdef HAVE_TIMES clock_t tms_total ; # endif if ( ! log_format && ( ! fpm_log_format || fpm_log_fd == - 1 ) ) { return - 1 ; } if ( ! log_format ) { log_format = fpm_log_format ; test = 0 ; } else { test = 1 ; } now_epoch = time ( NULL ) ; if ( ! test ) { scoreboard = fpm_scoreboard_get ( ) ; if ( ! scoreboard ) { zlog ( ZLOG_WARNING , \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>scoreboard<S2SV_blank>while<S2SV_blank>preparing<S2SV_blank>the<S2SV_blank>access<S2SV_blank>log\" ) ; return - 1 ; } proc_p = fpm_scoreboard_proc_acquire ( NULL , - 1 , 0 ) ; if ( ! proc_p ) { zlog ( ZLOG_WARNING , \"[pool<S2SV_blank>%s]<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>acquire<S2SV_blank>shm<S2SV_blank>slot<S2SV_blank>while<S2SV_blank>preparing<S2SV_blank>the<S2SV_blank>access<S2SV_blank>log\" , scoreboard -> pool ) ; return - 1 ; } proc = * proc_p ; fpm_scoreboard_proc_release ( proc_p ) ; } token = 0 ; memset ( buffer , '\\\\0' , sizeof ( buffer ) ) ; b = buffer ; len = 0 ; s = log_format ; while ( * s != '\\\\0' ) { if ( len >= FPM_LOG_BUFFER ) { zlog ( ZLOG_NOTICE , \"the<S2SV_blank>log<S2SV_blank>buffer<S2SV_blank>is<S2SV_blank>full<S2SV_blank>(%d).<S2SV_blank>The<S2SV_blank>access<S2SV_blank>log<S2SV_blank>request<S2SV_blank>has<S2SV_blank>been<S2SV_blank>truncated.\" , FPM_LOG_BUFFER ) ; len = FPM_LOG_BUFFER ; break ; } if ( ! token && * s == '%' ) { token = 1 ; memset ( format , '\\\\0' , sizeof ( format ) ) ; s ++ ; continue ; } if ( token ) { token = 0 ; len2 = 0 ; switch ( * s ) { case '%' : * b = '%' ; len2 = 1 ; break ; # ifdef HAVE_TIMES case 'C' : if ( format [ 0 ] == '\\\\0' || ! strcasecmp ( format , \"total\" ) ) { if ( ! test ) { tms_total = proc . last_request_cpu . tms_utime + proc . last_request_cpu . tms_stime + proc . last_request_cpu . tms_cutime + proc . last_request_cpu . tms_cstime ; } } else if ( ! strcasecmp ( format , \"user\" ) ) { if ( ! test ) { tms_total = proc . last_request_cpu . tms_utime + proc . last_request_cpu . tms_cutime ; } } else if ( ! strcasecmp ( format , \"system\" ) ) { if ( ! test ) { tms_total = proc . last_request_cpu . tms_stime + proc . last_request_cpu . tms_cstime ; } } else { zlog ( ZLOG_WARNING , \"only<S2SV_blank>\\'total\\',<S2SV_blank>\\'user\\'<S2SV_blank>or<S2SV_blank>\\'system\\'<S2SV_blank>are<S2SV_blank>allowed<S2SV_blank>as<S2SV_blank>a<S2SV_blank>modifier<S2SV_blank>for<S2SV_blank>%%%c<S2SV_blank>(\\'%s\\')\" , * s , format ) ; return - 1 ; } format [ 0 ] = '\\\\0' ; if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%.2f\" , tms_total / fpm_scoreboard_get_tick ( ) / ( proc . cpu_duration . tv_sec + proc . cpu_duration . tv_usec / 1000000. ) * 100. ) ; } break ; # endif case 'd' : if ( format [ 0 ] == '\\\\0' || ! strcasecmp ( format , \"seconds\" ) ) { if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%.3f\" , proc . duration . tv_sec + proc . duration . tv_usec / 1000000. ) ; } } else if ( ! strcasecmp ( format , \"miliseconds\" ) || ! strcasecmp ( format , \"mili\" ) ) { if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%.3f\" , proc . duration . tv_sec * 1000. + proc . duration . tv_usec / 1000. ) ; } } else if ( ! strcasecmp ( format , \"microseconds\" ) || ! strcasecmp ( format , \"micro\" ) ) { if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%lu\" , proc . duration . tv_sec * 1000000UL + proc . duration . tv_usec ) ; } } else { zlog ( ZLOG_WARNING , \"only<S2SV_blank>\\'seconds\\',<S2SV_blank>\\'mili\\',<S2SV_blank>\\'miliseconds\\',<S2SV_blank>\\'micro\\'<S2SV_blank>or<S2SV_blank>\\'microseconds\\'<S2SV_blank>are<S2SV_blank>allowed<S2SV_blank>as<S2SV_blank>a<S2SV_blank>modifier<S2SV_blank>for<S2SV_blank>%%%c<S2SV_blank>(\\'%s\\')\" , * s , format ) ; return - 1 ; } format [ 0 ] = '\\\\0' ; break ; case 'e' : if ( format [ 0 ] == '\\\\0' ) { zlog ( ZLOG_WARNING , \"the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>the<S2SV_blank>environment<S2SV_blank>variable<S2SV_blank>must<S2SV_blank>be<S2SV_blank>set<S2SV_blank>between<S2SV_blank>embraces<S2SV_blank>for<S2SV_blank>%%%c\" , * s ) ; return - 1 ; } if ( ! test ) { char * env = fcgi_getenv ( ( fcgi_request * ) SG ( server_context ) , format , strlen ( format ) ) ; len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , env ? env : \"-\" ) ; } format [ 0 ] = '\\\\0' ; break ; case 'f' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , * proc . script_filename ? proc . script_filename : \"-\" ) ; } break ; case 'l' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%zu\" , proc . content_length ) ; } break ; case 'm' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , * proc . request_method ? proc . request_method : \"-\" ) ; } break ; case 'M' : if ( format [ 0 ] == '\\\\0' || ! strcasecmp ( format , \"bytes\" ) ) { if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%zu\" , proc . memory ) ; } } else if ( ! strcasecmp ( format , \"kilobytes\" ) || ! strcasecmp ( format , \"kilo\" ) ) { if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%lu\" , proc . memory / 1024 ) ; } } else if ( ! strcasecmp ( format , \"megabytes\" ) || ! strcasecmp ( format , \"mega\" ) ) { if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%lu\" , proc . memory / 1024 / 1024 ) ; } } else { zlog ( ZLOG_WARNING , \"only<S2SV_blank>\\'bytes\\',<S2SV_blank>\\'kilo\\',<S2SV_blank>\\'kilobytes\\',<S2SV_blank>\\'mega\\'<S2SV_blank>or<S2SV_blank>\\'megabytes\\'<S2SV_blank>are<S2SV_blank>allowed<S2SV_blank>as<S2SV_blank>a<S2SV_blank>modifier<S2SV_blank>for<S2SV_blank>%%%c<S2SV_blank>(\\'%s\\')\" , * s , format ) ; return - 1 ; } format [ 0 ] = '\\\\0' ; break ; case 'n' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , scoreboard -> pool [ 0 ] ? scoreboard -> pool : \"-\" ) ; } break ; case 'o' : if ( format [ 0 ] == '\\\\0' ) { zlog ( ZLOG_WARNING , \"the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>the<S2SV_blank>header<S2SV_blank>must<S2SV_blank>be<S2SV_blank>set<S2SV_blank>between<S2SV_blank>embraces<S2SV_blank>for<S2SV_blank>%%%c\" , * s ) ; return - 1 ; } if ( ! test ) { sapi_header_struct * h ; zend_llist_position pos ; sapi_headers_struct * sapi_headers = & SG ( sapi_headers ) ; size_t format_len = strlen ( format ) ; h = ( sapi_header_struct * ) zend_llist_get_first_ex ( & sapi_headers -> headers , & pos ) ; while ( h ) { char * header ; if ( ! h -> header_len ) { h = ( sapi_header_struct * ) zend_llist_get_next_ex ( & sapi_headers -> headers , & pos ) ; continue ; } if ( ! strstr ( h -> header , format ) ) { h = ( sapi_header_struct * ) zend_llist_get_next_ex ( & sapi_headers -> headers , & pos ) ; continue ; } if ( h -> header_len <= format_len + 2 ) { h = ( sapi_header_struct * ) zend_llist_get_next_ex ( & sapi_headers -> headers , & pos ) ; continue ; } if ( h -> header [ format_len ] != ':' || h -> header [ format_len + 1 ] != '<S2SV_blank>' ) { h = ( sapi_header_struct * ) zend_llist_get_next_ex ( & sapi_headers -> headers , & pos ) ; continue ; } header = h -> header + format_len + 2 ; len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , header && * header ? header : \"-\" ) ; break ; } if ( ! len2 ) { len2 = 1 ; * b = '-' ; } } format [ 0 ] = '\\\\0' ; break ; case 'p' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%ld\" , ( long ) getpid ( ) ) ; } break ; case 'P' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%ld\" , ( long ) getppid ( ) ) ; } break ; case 'q' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , proc . query_string ) ; } break ; case 'Q' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , * proc . query_string ? \"?\" : \"\" ) ; } break ; case 'r' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , proc . request_uri ) ; } break ; case 'R' : if ( ! test ) { const char * tmp = fcgi_get_last_client_ip ( ) ; len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , tmp ? tmp : \"-\" ) ; } break ; case 's' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%d\" , SG ( sapi_headers ) . http_response_code ) ; } break ; case 'T' : case 't' : if ( ! test ) { time_t * t ; if ( * s == 't' ) { t = & proc . accepted_epoch ; } else { t = & now_epoch ; } if ( format [ 0 ] == '\\\\0' ) { strftime ( tmp , sizeof ( tmp ) - 1 , \"%d/%b/%Y:%H:%M:%S<S2SV_blank>%z\" , localtime ( t ) ) ; } else { strftime ( tmp , sizeof ( tmp ) - 1 , format , localtime ( t ) ) ; } len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , tmp ) ; } format [ 0 ] = '\\\\0' ; break ; case 'u' : if ( ! test ) { len2 = snprintf ( b , FPM_LOG_BUFFER - len , \"%s\" , proc . auth_user ) ; } break ; case '{' : token = 1 ; { char * start ; size_t l ; start = ++ s ; while ( * s != '\\\\0' ) { if ( * s == '}' ) { l = s - start ; if ( l >= sizeof ( format ) - 1 ) { l = sizeof ( format ) - 1 ; } memcpy ( format , start , l ) ; format [ l ] = '\\\\0' ; break ; } s ++ ; } if ( s [ 1 ] == '\\\\0' ) { zlog ( ZLOG_WARNING , \"missing<S2SV_blank>closing<S2SV_blank>embrace<S2SV_blank>in<S2SV_blank>the<S2SV_blank>access.format\" ) ; return - 1 ; } } break ; default : zlog ( ZLOG_WARNING , \"Invalid<S2SV_blank>token<S2SV_blank>in<S2SV_blank>the<S2SV_blank>access.format<S2SV_blank>(%%%c)\" , * s ) ; return - 1 ; } if ( * s != '}' && format [ 0 ] != '\\\\0' ) { zlog ( ZLOG_WARNING , \"embrace<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>for<S2SV_blank>modifier<S2SV_blank>%%%c\" , * s ) ; return - 1 ; } s ++ ; if ( ! test ) { b += len2 ; len += len2 ; } <S2SV_StartBug> continue ; <S2SV_EndBug> } if ( ! test ) { * b = * s ; b ++ ; len ++ ; } s ++ ; } if ( ! test && strlen ( buffer ) > 0 ) { buffer [ len ] = '\\\\n' ; write ( fpm_log_fd , buffer , len + 1 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len2 ; } if ( len >= FPM_LOG_BUFFER ) { zlog ( ZLOG_NOTICE , \"the<S2SV_blank>log<S2SV_blank>buffer<S2SV_blank>is<S2SV_blank>full<S2SV_blank>(%d).<S2SV_blank>The<S2SV_blank>access<S2SV_blank>log<S2SV_blank>request<S2SV_blank>has<S2SV_blank>been<S2SV_blank>truncated.\" , FPM_LOG_BUFFER ) ; len = FPM_LOG_BUFFER ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 static int cg_open ( const char * path , struct fuse_file_info * fi ) { const char * cgroup ; char * fpath = NULL , * path1 , * path2 , * cgdir = NULL , * controller ; struct cgfs_files * k = NULL ; struct file_info * file_info ; struct fuse_context * fc = fuse_get_context ( ) ; int ret ; if ( ! fc ) return - EIO ; controller = pick_controller_from_path ( fc , path ) ; if ( ! controller ) return - EIO ; cgroup = find_cgroup_in_path ( path ) ; if ( ! cgroup ) return - EINVAL ; get_cgdir_and_path ( cgroup , & cgdir , & fpath ) ; if ( ! fpath ) { path1 = \"/\" ; path2 = cgdir ; } else { path1 = cgdir ; path2 = fpath ; } k = cgfs_get_key ( controller , path1 , path2 ) ; if ( ! k ) { ret = - EINVAL ; goto out ; } free_key ( k ) ; <S2SV_StartBug> if ( ! fc_may_access ( fc , controller , path1 , path2 , fi -> flags ) ) { <S2SV_EndBug> ret = - EACCES ; goto out ; } file_info = malloc ( sizeof ( * file_info ) ) ; if ( ! file_info ) { ret = - ENOMEM ; goto out ; } file_info -> controller = must_copy_string ( controller ) ; file_info -> cgroup = must_copy_string ( path1 ) ; file_info -> file = must_copy_string ( path2 ) ; file_info -> type = LXC_TYPE_CGFILE ; file_info -> buf = NULL ; file_info -> buflen = 0 ; fi -> fh = ( unsigned long ) file_info ; ret = 0 ; out : free ( cgdir ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! caller_may_see_dir ( fc -> pid , controller , path1 ) ) { ret = - ENOENT ; goto out ; } if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> CYCLIC_REFRESH * vp9_cyclic_refresh_alloc ( int mi_rows , int mi_cols ) { <S2SV_EndBug> CYCLIC_REFRESH * const cr = vpx_calloc ( 1 , sizeof ( * cr ) ) ; if ( cr == NULL ) return NULL ; cr -> map = vpx_calloc ( mi_rows * mi_cols , sizeof ( * cr -> map ) ) ; if ( cr -> map == NULL ) { vpx_free ( cr ) ; return NULL ; } <S2SV_StartBug> return cr ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mi_cols ) { size_t last_coded_q_map_size ; <S2SV_ModStart> NULL ; } last_coded_q_map_size = mi_rows * mi_cols * sizeof ( * cr -> last_coded_q_map ) ; cr -> last_coded_q_map = vpx_malloc ( last_coded_q_map_size ) ; if ( cr -> last_coded_q_map == NULL ) { vpx_free ( cr ) ; return NULL ; } assert ( MAXQ <= 255 ) ; memset ( cr -> last_coded_q_map , MAXQ , last_coded_q_map_size ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t dm9000SendPacket ( NetInterface * interface , const NetBuffer * buffer , size_t offset , NetTxAncillary * ancillary ) { size_t i ; size_t length ; uint16_t * p ; Dm9000Context * context ; context = ( Dm9000Context * ) interface -> nicContext ; length = netBufferGetLength ( buffer ) - offset ; if ( length > ETH_MAX_FRAME_SIZE ) { osSetEvent ( & interface -> nicTxEvent ) ; return ERROR_INVALID_LENGTH ; } netBufferRead ( context -> txBuffer , buffer , offset , length ) ; <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_MWCMDX , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> DM9000_INDEX_REG = DM9000_REG_MWCMD ; <S2SV_EndBug> p = ( uint16_t * ) context -> txBuffer ; for ( i = length ; i > 1 ; i -= 2 ) { DM9000_DATA_REG = * ( p ++ ) ; } if ( i > 0 ) { DM9000_DATA_REG = * ( ( uint8_t * ) p ) ; } <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_TXPLL , LSB ( length ) ) ; <S2SV_EndBug> <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_TXPLH , MSB ( length ) ) ; <S2SV_EndBug> <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_ISR , ISR_PT ) ; <S2SV_EndBug> dm9000WriteReg ( DM9000_REG_TCR , TCR_TXREQ ) ; context -> queuedPackets ++ ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dm9000WriteReg ( DM9000_MWCMDX <S2SV_ModEnd> , 0 ) <S2SV_ModStart> ; DM9000_INDEX_REG = DM9000_MWCMD <S2SV_ModEnd> ; p = <S2SV_ModStart> } dm9000WriteReg ( DM9000_TXPLL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ; dm9000WriteReg ( DM9000_TXPLH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ; dm9000WriteReg ( DM9000_ISR , DM9000_ISR_PT ) ; dm9000WriteReg ( DM9000_TCR , DM9000_TCR_TXREQ <S2SV_ModEnd> ) ; context\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5225\n\n```\nCWE-119 DECLAREcpFunc ( cpContig2SeparateByRow ) { tsize_t scanlinesizein = TIFFScanlineSize ( in ) ; tsize_t scanlinesizeout = TIFFScanlineSize ( out ) ; tdata_t inbuf ; tdata_t outbuf ; register uint8 * inp , * outp ; register uint32 n ; uint32 row ; tsample_t s ; <S2SV_StartBug> inbuf = _TIFFmalloc ( scanlinesizein ) ; <S2SV_EndBug> outbuf = _TIFFmalloc ( scanlinesizeout ) ; if ( ! inbuf || ! outbuf ) goto bad ; _TIFFmemset ( inbuf , 0 , scanlinesizein ) ; _TIFFmemset ( outbuf , 0 , scanlinesizeout ) ; for ( s = 0 ; s < spp ; s ++ ) { for ( row = 0 ; row < imagelength ; row ++ ) { if ( TIFFReadScanline ( in , inbuf , row , 0 ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>scanline<S2SV_blank>%lu\" , ( unsigned long ) row ) ; goto bad ; } inp = ( ( uint8 * ) inbuf ) + s ; outp = ( uint8 * ) outbuf ; for ( n = imagewidth ; n -- > 0 ; ) { * outp ++ = * inp ; inp += spp ; } if ( TIFFWriteScanline ( out , outbuf , row , s ) < 0 ) { TIFFError ( TIFFFileName ( out ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>write<S2SV_blank>scanline<S2SV_blank>%lu\" , ( unsigned long ) row ) ; goto bad ; } } } if ( inbuf ) _TIFFfree ( inbuf ) ; if ( outbuf ) _TIFFfree ( outbuf ) ; return 1 ; bad : if ( inbuf ) _TIFFfree ( inbuf ) ; if ( outbuf ) _TIFFfree ( outbuf ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tsample_t s ; uint16 bps = 0 ; ( void ) TIFFGetField ( in , TIFFTAG_BITSPERSAMPLE , & bps ) ; if ( bps != 8 ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can<S2SV_blank>only<S2SV_blank>handle<S2SV_blank>BitsPerSample=8<S2SV_blank>in<S2SV_blank>%s\" , \"cpContig2SeparateByRow\" ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 int tls1_enc ( SSL * s , SSL3_RECORD * recs , unsigned int n_recs , int send ) { EVP_CIPHER_CTX * ds ; size_t reclen [ SSL_MAX_PIPELINES ] ; unsigned char buf [ SSL_MAX_PIPELINES ] [ EVP_AEAD_TLS1_AAD_LEN ] ; int bs , i , j , k , pad = 0 , ret , mac_size = 0 ; const EVP_CIPHER * enc ; unsigned int ctr ; if ( send ) { if ( EVP_MD_CTX_md ( s -> write_hash ) ) { int n = EVP_MD_CTX_size ( s -> write_hash ) ; OPENSSL_assert ( n >= 0 ) ; } ds = s -> enc_write_ctx ; if ( s -> enc_write_ctx == NULL ) enc = NULL ; else { int ivlen ; enc = EVP_CIPHER_CTX_cipher ( s -> enc_write_ctx ) ; if ( SSL_USE_EXPLICIT_IV ( s ) && EVP_CIPHER_mode ( enc ) == EVP_CIPH_CBC_MODE ) ivlen = EVP_CIPHER_iv_length ( enc ) ; else ivlen = 0 ; if ( ivlen > 1 ) { for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { if ( recs [ ctr ] . data != recs [ ctr ] . input ) { SSLerr ( SSL_F_TLS1_ENC , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } else if ( RAND_bytes ( recs [ ctr ] . input , ivlen ) <= 0 ) { SSLerr ( SSL_F_TLS1_ENC , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } } } } } else { if ( EVP_MD_CTX_md ( s -> read_hash ) ) { int n = EVP_MD_CTX_size ( s -> read_hash ) ; OPENSSL_assert ( n >= 0 ) ; } ds = s -> enc_read_ctx ; if ( s -> enc_read_ctx == NULL ) enc = NULL ; else enc = EVP_CIPHER_CTX_cipher ( s -> enc_read_ctx ) ; } if ( ( s -> session == NULL ) || ( ds == NULL ) || ( enc == NULL ) ) { for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { memmove ( recs [ ctr ] . data , recs [ ctr ] . input , recs [ ctr ] . length ) ; recs [ ctr ] . input = recs [ ctr ] . data ; } ret = 1 ; } else { bs = EVP_CIPHER_block_size ( EVP_CIPHER_CTX_cipher ( ds ) ) ; if ( n_recs > 1 ) { if ( ! ( EVP_CIPHER_flags ( EVP_CIPHER_CTX_cipher ( ds ) ) & EVP_CIPH_FLAG_PIPELINE ) ) { SSLerr ( SSL_F_TLS1_ENC , SSL_R_PIPELINE_FAILURE ) ; return - 1 ; } } for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { reclen [ ctr ] = recs [ ctr ] . length ; if ( EVP_CIPHER_flags ( EVP_CIPHER_CTX_cipher ( ds ) ) & EVP_CIPH_FLAG_AEAD_CIPHER ) { unsigned char * seq ; seq = send ? RECORD_LAYER_get_write_sequence ( & s -> rlayer ) : RECORD_LAYER_get_read_sequence ( & s -> rlayer ) ; if ( SSL_IS_DTLS ( s ) ) { unsigned char dtlsseq [ 9 ] , * p = dtlsseq ; s2n ( send ? DTLS_RECORD_LAYER_get_w_epoch ( & s -> rlayer ) : DTLS_RECORD_LAYER_get_r_epoch ( & s -> rlayer ) , p ) ; memcpy ( p , & seq [ 2 ] , 6 ) ; memcpy ( buf [ ctr ] , dtlsseq , 8 ) ; } else { memcpy ( buf [ ctr ] , seq , 8 ) ; for ( i = 7 ; i >= 0 ; i -- ) { ++ seq [ i ] ; if ( seq [ i ] != 0 ) break ; } } buf [ ctr ] [ 8 ] = recs [ ctr ] . type ; buf [ ctr ] [ 9 ] = ( unsigned char ) ( s -> version >> 8 ) ; buf [ ctr ] [ 10 ] = ( unsigned char ) ( s -> version ) ; buf [ ctr ] [ 11 ] = recs [ ctr ] . length >> 8 ; buf [ ctr ] [ 12 ] = recs [ ctr ] . length & 0xff ; pad = EVP_CIPHER_CTX_ctrl ( ds , EVP_CTRL_AEAD_TLS1_AAD , EVP_AEAD_TLS1_AAD_LEN , buf [ ctr ] ) ; if ( pad <= 0 ) return - 1 ; if ( send ) { reclen [ ctr ] += pad ; recs [ ctr ] . length += pad ; } } else if ( ( bs != 1 ) && send ) { i = bs - ( ( int ) reclen [ ctr ] % bs ) ; j = i - 1 ; for ( k = ( int ) reclen [ ctr ] ; k < ( int ) ( reclen [ ctr ] + i ) ; k ++ ) recs [ ctr ] . input [ k ] = j ; reclen [ ctr ] += i ; recs [ ctr ] . length += i ; } if ( ! send ) { if ( reclen [ ctr ] == 0 || reclen [ ctr ] % bs != 0 ) return 0 ; } } if ( n_recs > 1 ) { unsigned char * data [ SSL_MAX_PIPELINES ] ; for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { data [ ctr ] = recs [ ctr ] . data ; } if ( EVP_CIPHER_CTX_ctrl ( ds , EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS , n_recs , data ) <= 0 ) { SSLerr ( SSL_F_TLS1_ENC , SSL_R_PIPELINE_FAILURE ) ; } for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { data [ ctr ] = recs [ ctr ] . input ; } if ( EVP_CIPHER_CTX_ctrl ( ds , EVP_CTRL_SET_PIPELINE_INPUT_BUFS , n_recs , data ) <= 0 || EVP_CIPHER_CTX_ctrl ( ds , EVP_CTRL_SET_PIPELINE_INPUT_LENS , n_recs , reclen ) <= 0 ) { SSLerr ( SSL_F_TLS1_ENC , SSL_R_PIPELINE_FAILURE ) ; return - 1 ; } } i = EVP_Cipher ( ds , recs [ 0 ] . data , recs [ 0 ] . input , reclen [ 0 ] ) ; if ( ( EVP_CIPHER_flags ( EVP_CIPHER_CTX_cipher ( ds ) ) & EVP_CIPH_FLAG_CUSTOM_CIPHER ) ? ( i < 0 ) : ( i == 0 ) ) return - 1 ; if ( send == 0 ) { if ( EVP_CIPHER_mode ( enc ) == EVP_CIPH_GCM_MODE ) { for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { recs [ ctr ] . data += EVP_GCM_TLS_EXPLICIT_IV_LEN ; recs [ ctr ] . input += EVP_GCM_TLS_EXPLICIT_IV_LEN ; recs [ ctr ] . length -= EVP_GCM_TLS_EXPLICIT_IV_LEN ; } } else if ( EVP_CIPHER_mode ( enc ) == EVP_CIPH_CCM_MODE ) { for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { recs [ ctr ] . data += EVP_CCM_TLS_EXPLICIT_IV_LEN ; recs [ ctr ] . input += EVP_CCM_TLS_EXPLICIT_IV_LEN ; recs [ ctr ] . length -= EVP_CCM_TLS_EXPLICIT_IV_LEN ; } } } ret = 1 ; <S2SV_StartBug> if ( ! SSL_USE_ETM ( s ) && EVP_MD_CTX_md ( s -> read_hash ) != NULL ) <S2SV_EndBug> mac_size = EVP_MD_CTX_size ( s -> read_hash ) ; if ( ( bs != 1 ) && ! send ) { int tmpret ; for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { tmpret = tls1_cbc_remove_padding ( s , & recs [ ctr ] , bs , mac_size ) ; if ( tmpret == 0 ) return 0 ; ret = constant_time_select_int ( constant_time_eq_int ( tmpret , 1 ) , ret , - 1 ) ; } } if ( pad && ! send ) { for ( ctr = 0 ; ctr < n_recs ; ctr ++ ) { recs [ ctr ] . length -= pad ; } } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! SSL_READ_ETM <S2SV_ModEnd> ( s )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12904\n\n```\nCWE-000 static int nested_vmx_check_permission ( struct kvm_vcpu * vcpu ) <S2SV_StartBug> { <S2SV_EndBug> if ( ! to_vmx ( vcpu ) -> nested . vmxon ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu ) { if ( vmx_get_cpl ( vcpu ) ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 static int dccp_v6_send_response ( const struct sock * sk , struct request_sock * req ) { struct inet_request_sock * ireq = inet_rsk ( req ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct sk_buff * skb ; struct in6_addr * final_p , final ; struct flowi6 fl6 ; int err = - 1 ; struct dst_entry * dst ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_proto = IPPROTO_DCCP ; fl6 . daddr = ireq -> ir_v6_rmt_addr ; fl6 . saddr = ireq -> ir_v6_loc_addr ; fl6 . flowlabel = 0 ; fl6 . flowi6_oif = ireq -> ir_iif ; fl6 . fl6_dport = ireq -> ir_rmt_port ; fl6 . fl6_sport = htons ( ireq -> ir_num ) ; security_req_classify_flow ( req , flowi6_to_flowi ( & fl6 ) ) ; <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , np -> opt , & final ) ; <S2SV_EndBug> dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) { err = PTR_ERR ( dst ) ; dst = NULL ; goto done ; } skb = dccp_make_response ( sk , dst , req ) ; if ( skb != NULL ) { struct dccp_hdr * dh = dccp_hdr ( skb ) ; dh -> dccph_checksum = dccp_v6_csum_finish ( skb , & ireq -> ir_v6_loc_addr , & ireq -> ir_v6_rmt_addr ) ; fl6 . daddr = ireq -> ir_v6_rmt_addr ; <S2SV_StartBug> err = ip6_xmit ( sk , skb , & fl6 , np -> opt , np -> tclass ) ; <S2SV_EndBug> err = net_xmit_eval ( err ) ; } done : dst_release ( dst ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; rcu_read_lock ( ) ; <S2SV_ModStart> & fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt ) <S2SV_ModStart> , & final ) ; rcu_read_unlock ( <S2SV_ModStart> -> ir_v6_rmt_addr ; rcu_read_lock ( ) ; <S2SV_ModStart> & fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt ) , <S2SV_ModEnd> np -> tclass <S2SV_ModStart> np -> tclass ) ; rcu_read_unlock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13029\n\n```\nCWE-125 static int print_lcp_config_options ( netdissect_options * ndo , const u_char * p , int length ) { int len , opt ; if ( length < 2 ) return 0 ; ND_TCHECK2 ( * p , 2 ) ; len = p [ 1 ] ; opt = p [ 0 ] ; if ( length < len ) return 0 ; if ( len < 2 ) { if ( ( opt >= LCPOPT_MIN ) && ( opt <= LCPOPT_MAX ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>2)\" , lcpconfopts [ opt ] , opt , len ) ) ; else ND_PRINT ( ( ndo , \"\\\\n\\\\tunknown<S2SV_blank>LCP<S2SV_blank>option<S2SV_blank>0x%02x\" , opt ) ) ; return 0 ; } if ( ( opt >= LCPOPT_MIN ) && ( opt <= LCPOPT_MAX ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u\" , lcpconfopts [ opt ] , opt , len ) ) ; else { ND_PRINT ( ( ndo , \"\\\\n\\\\tunknown<S2SV_blank>LCP<S2SV_blank>option<S2SV_blank>0x%02x\" , opt ) ) ; return len ; } switch ( opt ) { case LCPOPT_VEXT : if ( len < 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>6)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 3 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>Vendor:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( oui_values , \"Unknown\" , EXTRACT_24BITS ( p + 2 ) ) , EXTRACT_24BITS ( p + 2 ) ) ) ; # if 0 ND_TCHECK ( p [ 5 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>kind:<S2SV_blank>0x%02x\" , p [ 5 ] ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Value:<S2SV_blank>0x\" ) ) ; for ( i = 0 ; i < len - 6 ; i ++ ) { ND_TCHECK ( p [ 6 + i ] ) ; ND_PRINT ( ( ndo , \"%02x\" , p [ 6 + i ] ) ) ; } # endif break ; case LCPOPT_MRU : if ( len != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>4)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>%u\" , EXTRACT_16BITS ( p + 2 ) ) ) ; break ; case LCPOPT_ACCM : if ( len != 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>6)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( p + 2 ) ) ) ; break ; case LCPOPT_AP : if ( len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>%s\" , tok2str ( ppptype2str , \"Unknown<S2SV_blank>Auth<S2SV_blank>Proto<S2SV_blank>(0x04x)\" , EXTRACT_16BITS ( p + 2 ) ) ) ) ; switch ( EXTRACT_16BITS ( p + 2 ) ) { case PPP_CHAP : ND_TCHECK ( p [ 4 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , tok2str ( authalg_values , \"Unknown<S2SV_blank>Auth<S2SV_blank>Alg<S2SV_blank>%u\" , p [ 4 ] ) ) ) ; break ; case PPP_PAP : case PPP_EAP : case PPP_SPAP : case PPP_SPAP_OLD : break ; default : print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , len ) ; } break ; case LCPOPT_QP : if ( len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> if ( EXTRACT_16BITS ( p + 2 ) == PPP_LQM ) ND_PRINT ( ( ndo , \":<S2SV_blank>LQR\" ) ) ; else ND_PRINT ( ( ndo , \":<S2SV_blank>unknown\" ) ) ; break ; case LCPOPT_MN : if ( len != 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>6)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( p + 2 ) ) ) ; break ; case LCPOPT_PFC : break ; case LCPOPT_ACFC : break ; case LCPOPT_LD : if ( len != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>4)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( p + 2 ) ) ) ; break ; case LCPOPT_CBACK : if ( len < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>3)\" ) ) ; return 0 ; } ND_PRINT ( ( ndo , \":<S2SV_blank>\" ) ) ; ND_TCHECK ( p [ 2 ] ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>Callback<S2SV_blank>Operation<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( ppp_callback_values , \"Unknown\" , p [ 2 ] ) , p [ 2 ] ) ) ; break ; case LCPOPT_MLMRRU : if ( len != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>4)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>%u\" , EXTRACT_16BITS ( p + 2 ) ) ) ; break ; case LCPOPT_MLED : if ( len < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>3)\" ) ) ; return 0 ; } ND_TCHECK ( p [ 2 ] ) ; switch ( p [ 2 ] ) { case MEDCLASS_NULL : ND_PRINT ( ( ndo , \":<S2SV_blank>Null\" ) ) ; break ; case MEDCLASS_LOCAL : ND_PRINT ( ( ndo , \":<S2SV_blank>Local\" ) ) ; break ; case MEDCLASS_IPV4 : if ( len != 7 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>7)\" ) ) ; return 0 ; } ND_TCHECK2 ( * ( p + 3 ) , 4 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>IPv4<S2SV_blank>%s\" , ipaddr_string ( ndo , p + 3 ) ) ) ; break ; case MEDCLASS_MAC : if ( len != 9 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>9)\" ) ) ; return 0 ; } ND_TCHECK2 ( * ( p + 3 ) , 6 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>MAC<S2SV_blank>%s\" , etheraddr_string ( ndo , p + 3 ) ) ) ; break ; case MEDCLASS_MNB : ND_PRINT ( ( ndo , \":<S2SV_blank>Magic-Num-Block\" ) ) ; break ; case MEDCLASS_PSNDN : ND_PRINT ( ( ndo , \":<S2SV_blank>PSNDN\" ) ) ; break ; default : ND_PRINT ( ( ndo , \":<S2SV_blank>Unknown<S2SV_blank>class<S2SV_blank>%u\" , p [ 2 ] ) ) ; break ; } break ; # if 0 case LCPOPT_DEP6 : case LCPOPT_FCSALT : case LCPOPT_SDP : case LCPOPT_NUMMODE : case LCPOPT_DEP12 : case LCPOPT_DEP14 : case LCPOPT_DEP15 : case LCPOPT_DEP16 : case LCPOPT_MLSSNHF : case LCPOPT_PROP : case LCPOPT_DCEID : case LCPOPT_MPP : case LCPOPT_LCPAOPT : case LCPOPT_COBS : case LCPOPT_PE : case LCPOPT_MLHF : case LCPOPT_I18N : case LCPOPT_SDLOS : case LCPOPT_PPPMUX : break ; # endif default : if ( ndo -> ndo_vflag < 2 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; return len ; trunc : ND_PRINT ( ( ndo , \"[|lcp]\" ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ; } ND_TCHECK_24BITS ( p + 2 <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> len ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ; <S2SV_ModStart> len ; } ND_TCHECK_32BITS ( p + 2 <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> len ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ; <S2SV_ModStart> 0 ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ; <S2SV_ModStart> 0 ; } ND_TCHECK_32BITS ( p + 2 <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> 0 ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ; <S2SV_ModStart> 0 ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static expr_ty ast_for_atom ( struct compiling * c , const node * n ) { node * ch = CHILD ( n , 0 ) ; switch ( TYPE ( ch ) ) { case NAME : { PyObject * name ; const char * s = STR ( ch ) ; size_t len = strlen ( s ) ; if ( len >= 4 && len <= 5 ) { if ( ! strcmp ( s , \"None\" ) ) return NameConstant ( Py_None , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; if ( ! strcmp ( s , \"True\" ) ) return NameConstant ( Py_True , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; if ( ! strcmp ( s , \"False\" ) ) return NameConstant ( Py_False , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } name = new_identifier ( s , c ) ; if ( ! name ) return NULL ; return Name ( name , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } case STRING : { expr_ty str = parsestrplus ( c , n ) ; if ( ! str ) { const char * errtype = NULL ; if ( PyErr_ExceptionMatches ( PyExc_UnicodeError ) ) errtype = \"unicode<S2SV_blank>error\" ; else if ( PyErr_ExceptionMatches ( PyExc_ValueError ) ) errtype = \"value<S2SV_blank>error\" ; if ( errtype ) { char buf [ 128 ] ; const char * s = NULL ; PyObject * type , * value , * tback , * errstr ; PyErr_Fetch ( & type , & value , & tback ) ; errstr = PyObject_Str ( value ) ; if ( errstr ) s = PyUnicode_AsUTF8 ( errstr ) ; if ( s ) { PyOS_snprintf ( buf , sizeof ( buf ) , \"(%s)<S2SV_blank>%s\" , errtype , s ) ; } else { PyErr_Clear ( ) ; PyOS_snprintf ( buf , sizeof ( buf ) , \"(%s)<S2SV_blank>unknown<S2SV_blank>error\" , errtype ) ; } Py_XDECREF ( errstr ) ; ast_error ( c , n , buf ) ; Py_DECREF ( type ) ; Py_XDECREF ( value ) ; Py_XDECREF ( tback ) ; } return NULL ; } return str ; } case NUMBER : { PyObject * pynum ; const char * s = STR ( ch ) ; if ( c -> c_feature_version < 6 && strchr ( s , '_' ) != NULL ) { ast_error ( c , ch , \"Underscores<S2SV_blank>in<S2SV_blank>numeric<S2SV_blank>literals<S2SV_blank>are<S2SV_blank>only<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>Python<S2SV_blank>3.6<S2SV_blank>and<S2SV_blank>greater\" ) ; return NULL ; } <S2SV_StartBug> pynum = parsenumber ( c , s ) ; <S2SV_EndBug> if ( ! pynum ) return NULL ; if ( PyArena_AddPyObject ( c -> c_arena , pynum ) < 0 ) { Py_DECREF ( pynum ) ; return NULL ; } return Num ( pynum , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } case ELLIPSIS : return Ellipsis ( LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; case LPAR : ch = CHILD ( n , 1 ) ; if ( TYPE ( ch ) == RPAR ) return Tuple ( NULL , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; if ( TYPE ( ch ) == yield_expr ) return ast_for_expr ( c , ch ) ; if ( ( NCH ( ch ) > 1 ) && ( TYPE ( CHILD ( ch , 1 ) ) == comp_for ) ) return ast_for_genexp ( c , ch ) ; return ast_for_testlist ( c , ch ) ; case LSQB : ch = CHILD ( n , 1 ) ; if ( TYPE ( ch ) == RSQB ) return List ( NULL , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; REQ ( ch , testlist_comp ) ; if ( NCH ( ch ) == 1 || TYPE ( CHILD ( ch , 1 ) ) == COMMA ) { asdl_seq * elts = seq_for_testlist ( c , ch ) ; if ( ! elts ) return NULL ; return List ( elts , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } else return ast_for_listcomp ( c , ch ) ; case LBRACE : { expr_ty res ; ch = CHILD ( n , 1 ) ; if ( TYPE ( ch ) == RBRACE ) { return Dict ( NULL , NULL , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } else { int is_dict = ( TYPE ( CHILD ( ch , 0 ) ) == DOUBLESTAR ) ; if ( NCH ( ch ) == 1 || ( NCH ( ch ) > 1 && TYPE ( CHILD ( ch , 1 ) ) == COMMA ) ) { res = ast_for_setdisplay ( c , ch ) ; } else if ( NCH ( ch ) > 1 && TYPE ( CHILD ( ch , 1 ) ) == comp_for ) { res = ast_for_setcomp ( c , ch ) ; } else if ( NCH ( ch ) > 3 - is_dict && TYPE ( CHILD ( ch , 3 - is_dict ) ) == comp_for ) { if ( is_dict ) { ast_error ( c , n , \"dict<S2SV_blank>unpacking<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>in<S2SV_blank>\" \"dict<S2SV_blank>comprehension\" ) ; return NULL ; } res = ast_for_dictcomp ( c , ch ) ; } else { res = ast_for_dictdisplay ( c , ch ) ; } if ( res ) { res -> lineno = LINENO ( n ) ; res -> col_offset = n -> n_col_offset ; } return res ; } } default : PyErr_Format ( PyExc_SystemError , \"unhandled<S2SV_blank>atom<S2SV_blank>%d\" , TYPE ( ch ) ) ; return NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( c , STR ( ch ) <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 static int udf_symlink_filler ( struct file * file , struct page * page ) { struct inode * inode = page -> mapping -> host ; struct buffer_head * bh = NULL ; unsigned char * symlink ; int err ; unsigned char * p = kmap ( page ) ; struct udf_inode_info * iinfo ; uint32_t pos ; if ( inode -> i_size > inode -> i_sb -> s_blocksize ) { err = - ENAMETOOLONG ; goto out_unmap ; } iinfo = UDF_I ( inode ) ; pos = udf_block_map ( inode , 0 ) ; down_read ( & iinfo -> i_data_sem ) ; if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ) { symlink = iinfo -> i_ext . i_data + iinfo -> i_lenEAttr ; } else { bh = sb_bread ( inode -> i_sb , pos ) ; if ( ! bh ) { err = - EIO ; goto out_unlock_inode ; } symlink = bh -> b_data ; } <S2SV_StartBug> udf_pc_to_char ( inode -> i_sb , symlink , inode -> i_size , p ) ; <S2SV_EndBug> <S2SV_StartBug> brelse ( bh ) ; <S2SV_EndBug> up_read ( & iinfo -> i_data_sem ) ; SetPageUptodate ( page ) ; kunmap ( page ) ; unlock_page ( page ) ; return 0 ; out_unlock_inode : up_read ( & iinfo -> i_data_sem ) ; SetPageError ( page ) ; out_unmap : kunmap ( page ) ; unlock_page ( page ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> b_data ; } err = <S2SV_ModStart> i_size , p , PAGE_SIZE <S2SV_ModStart> ( bh ) ; if ( err ) goto out_unlock_inode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void sum_intra_stats ( FRAME_COUNTS * counts , const MODE_INFO * mi ) { <S2SV_StartBug> const MB_PREDICTION_MODE y_mode = mi -> mbmi . mode ; <S2SV_EndBug> <S2SV_StartBug> const MB_PREDICTION_MODE uv_mode = mi -> mbmi . uv_mode ; <S2SV_EndBug> const BLOCK_SIZE bsize = mi -> mbmi . sb_type ; if ( bsize < BLOCK_8X8 ) { int idx , idy ; const int num_4x4_w = num_4x4_blocks_wide_lookup [ bsize ] ; const int num_4x4_h = num_4x4_blocks_high_lookup [ bsize ] ; for ( idy = 0 ; idy < 2 ; idy += num_4x4_h ) for ( idx = 0 ; idx < 2 ; idx += num_4x4_w ) ++ counts -> y_mode [ 0 ] [ mi -> bmi [ idy * 2 + idx ] . as_mode ] ; } else { ++ counts -> y_mode [ size_group_lookup [ bsize ] ] [ y_mode ] ; } ++ counts -> uv_mode [ y_mode ] [ uv_mode ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { const PREDICTION_MODE <S2SV_ModEnd> y_mode = mi <S2SV_ModStart> mode ; const PREDICTION_MODE <S2SV_ModEnd> uv_mode = mi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15116\n\n```\nCWE-476 static unsigned int seedsize ( struct crypto_alg * alg ) { struct rng_alg * ralg = container_of ( alg , struct rng_alg , base ) ; <S2SV_StartBug> return alg -> cra_rng . rng_make_random ? <S2SV_EndBug> alg -> cra_rng . seedsize : ralg -> seedsize ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return <S2SV_ModEnd> ralg -> seedsize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horAcc32 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint32 * wp = ( uint32 * ) cp0 ; tmsize_t wc = cc / 4 ; <S2SV_StartBug> assert ( ( cc % ( 4 * stride ) ) == 0 ) ; <S2SV_EndBug> if ( wc > stride ) { wc -= stride ; do { REPEAT4 ( stride , wp [ stride ] += wp [ 0 ] ; wp ++ ) wc -= stride ; } while ( wc > 0 ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horAcc32 ( TIFF <S2SV_ModStart> / 4 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horAcc32\" , \"%s\" , \"cc%(4*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( wc <S2SV_ModStart> ) ; } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horAcc8 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; unsigned char * cp = ( unsigned char * ) cp0 ; <S2SV_StartBug> assert ( ( cc % stride ) == 0 ) ; <S2SV_EndBug> if ( cc > stride ) { if ( stride == 3 ) { unsigned int cr = cp [ 0 ] ; unsigned int cg = cp [ 1 ] ; unsigned int cb = cp [ 2 ] ; cc -= 3 ; cp += 3 ; while ( cc > 0 ) { cp [ 0 ] = ( unsigned char ) ( ( cr += cp [ 0 ] ) & 0xff ) ; cp [ 1 ] = ( unsigned char ) ( ( cg += cp [ 1 ] ) & 0xff ) ; cp [ 2 ] = ( unsigned char ) ( ( cb += cp [ 2 ] ) & 0xff ) ; cc -= 3 ; cp += 3 ; } } else if ( stride == 4 ) { unsigned int cr = cp [ 0 ] ; unsigned int cg = cp [ 1 ] ; unsigned int cb = cp [ 2 ] ; unsigned int ca = cp [ 3 ] ; cc -= 4 ; cp += 4 ; while ( cc > 0 ) { cp [ 0 ] = ( unsigned char ) ( ( cr += cp [ 0 ] ) & 0xff ) ; cp [ 1 ] = ( unsigned char ) ( ( cg += cp [ 1 ] ) & 0xff ) ; cp [ 2 ] = ( unsigned char ) ( ( cb += cp [ 2 ] ) & 0xff ) ; cp [ 3 ] = ( unsigned char ) ( ( ca += cp [ 3 ] ) & 0xff ) ; cc -= 4 ; cp += 4 ; } } else { cc -= stride ; do { REPEAT4 ( stride , cp [ stride ] = ( unsigned char ) ( ( cp [ stride ] + * cp ) & 0xff ) ; cp ++ ) cc -= stride ; } while ( cc > 0 ) ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horAcc8 ( TIFF <S2SV_ModStart> ) cp0 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> % stride ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horAcc8\" , \"%s\" , \"(cc%stride)!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( cc <S2SV_ModStart> ; } } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21261\n\n```\nCWE-74 static gboolean handle_spawn ( PortalFlatpak * object , GDBusMethodInvocation * invocation , GUnixFDList * fd_list , const gchar * arg_cwd_path , const gchar * const * arg_argv , GVariant * arg_fds , GVariant * arg_envs , guint arg_flags , GVariant * arg_options ) { g_autoptr ( GError ) error = NULL ; ChildSetupData child_setup_data = { NULL } ; GPid pid ; PidData * pid_data ; InstanceIdReadData * instance_id_read_data = NULL ; gsize i , j , n_fds , n_envs ; const gint * fds = NULL ; gint fds_len = 0 ; g_autofree FdMapEntry * fd_map = NULL ; gchar * * env ; gint32 max_fd ; GKeyFile * app_info ; g_autoptr ( GPtrArray ) flatpak_argv = g_ptr_array_new_with_free_func ( g_free ) ; g_autofree char * app_id = NULL ; g_autofree char * branch = NULL ; g_autofree char * arch = NULL ; g_autofree char * app_commit = NULL ; g_autofree char * runtime_ref = NULL ; g_auto ( GStrv ) runtime_parts = NULL ; g_autofree char * runtime_commit = NULL ; g_autofree char * instance_path = NULL ; g_auto ( GStrv ) extra_args = NULL ; g_auto ( GStrv ) shares = NULL ; g_auto ( GStrv ) sockets = NULL ; g_auto ( GStrv ) devices = NULL ; g_auto ( GStrv ) sandbox_expose = NULL ; g_auto ( GStrv ) sandbox_expose_ro = NULL ; g_autoptr ( GVariant ) sandbox_expose_fd = NULL ; g_autoptr ( GVariant ) sandbox_expose_fd_ro = NULL ; g_autoptr ( GOutputStream ) instance_id_out_stream = NULL ; guint sandbox_flags = 0 ; gboolean sandboxed ; gboolean expose_pids ; gboolean share_pids ; gboolean notify_start ; gboolean devel ; g_autoptr ( GString ) env_string = g_string_new ( \"\" ) ; child_setup_data . instance_id_fd = - 1 ; child_setup_data . env_fd = - 1 ; if ( fd_list != NULL ) fds = g_unix_fd_list_peek_fds ( fd_list , & fds_len ) ; app_info = g_object_get_data ( G_OBJECT ( invocation ) , \"app-info\" ) ; g_assert ( app_info != NULL ) ; app_id = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_APPLICATION , FLATPAK_METADATA_KEY_NAME , NULL ) ; g_assert ( app_id != NULL ) ; g_debug ( \"spawn()<S2SV_blank>called<S2SV_blank>from<S2SV_blank>app:<S2SV_blank>\\'%s\\'\" , app_id ) ; if ( * app_id == 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"org.freedesktop.portal.Flatpak.Spawn<S2SV_blank>only<S2SV_blank>works<S2SV_blank>in<S2SV_blank>a<S2SV_blank>flatpak\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( * arg_cwd_path == 0 ) arg_cwd_path = NULL ; if ( arg_argv == NULL || * arg_argv == NULL ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>command<S2SV_blank>given\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( ( arg_flags & ~ FLATPAK_SPAWN_FLAGS_ALL ) != 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Unsupported<S2SV_blank>flags<S2SV_blank>enabled:<S2SV_blank>0x%x\" , arg_flags & ~ FLATPAK_SPAWN_FLAGS_ALL ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } runtime_ref = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_APPLICATION , FLATPAK_METADATA_KEY_RUNTIME , NULL ) ; if ( runtime_ref == NULL ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>runtime<S2SV_blank>found\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } runtime_parts = g_strsplit ( runtime_ref , \"/\" , - 1 ) ; branch = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_BRANCH , NULL ) ; instance_path = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_INSTANCE_PATH , NULL ) ; arch = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_ARCH , NULL ) ; extra_args = g_key_file_get_string_list ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_EXTRA_ARGS , NULL , NULL ) ; app_commit = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_APP_COMMIT , NULL ) ; runtime_commit = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_RUNTIME_COMMIT , NULL ) ; shares = g_key_file_get_string_list ( app_info , FLATPAK_METADATA_GROUP_CONTEXT , FLATPAK_METADATA_KEY_SHARED , NULL , NULL ) ; sockets = g_key_file_get_string_list ( app_info , FLATPAK_METADATA_GROUP_CONTEXT , FLATPAK_METADATA_KEY_SOCKETS , NULL , NULL ) ; devices = g_key_file_get_string_list ( app_info , FLATPAK_METADATA_GROUP_CONTEXT , FLATPAK_METADATA_KEY_DEVICES , NULL , NULL ) ; devel = g_key_file_get_boolean ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_DEVEL , NULL ) ; g_variant_lookup ( arg_options , \"sandbox-expose\" , \"^as\" , & sandbox_expose ) ; g_variant_lookup ( arg_options , \"sandbox-expose-ro\" , \"^as\" , & sandbox_expose_ro ) ; g_variant_lookup ( arg_options , \"sandbox-flags\" , \"u\" , & sandbox_flags ) ; sandbox_expose_fd = g_variant_lookup_value ( arg_options , \"sandbox-expose-fd\" , G_VARIANT_TYPE ( \"ah\" ) ) ; sandbox_expose_fd_ro = g_variant_lookup_value ( arg_options , \"sandbox-expose-fd-ro\" , G_VARIANT_TYPE ( \"ah\" ) ) ; if ( ( sandbox_flags & ~ FLATPAK_SPAWN_SANDBOX_FLAGS_ALL ) != 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Unsupported<S2SV_blank>sandbox<S2SV_blank>flags<S2SV_blank>enabled:<S2SV_blank>0x%x\" , arg_flags & ~ FLATPAK_SPAWN_SANDBOX_FLAGS_ALL ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( instance_path == NULL && ( ( sandbox_expose != NULL && sandbox_expose [ 0 ] != NULL ) || ( sandbox_expose_ro != NULL && sandbox_expose_ro [ 0 ] != NULL ) ) ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Invalid<S2SV_blank>sandbox<S2SV_blank>expose,<S2SV_blank>caller<S2SV_blank>has<S2SV_blank>no<S2SV_blank>instance<S2SV_blank>path\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } for ( i = 0 ; sandbox_expose != NULL && sandbox_expose [ i ] != NULL ; i ++ ) { const char * expose = sandbox_expose [ i ] ; g_debug ( \"exposing<S2SV_blank>%s\" , expose ) ; if ( ! is_valid_expose ( expose , & error ) ) { g_dbus_method_invocation_return_gerror ( invocation , error ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } } for ( i = 0 ; sandbox_expose_ro != NULL && sandbox_expose_ro [ i ] != NULL ; i ++ ) { const char * expose = sandbox_expose_ro [ i ] ; g_debug ( \"exposing<S2SV_blank>%s\" , expose ) ; if ( ! is_valid_expose ( expose , & error ) ) { g_dbus_method_invocation_return_gerror ( invocation , error ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } } g_debug ( \"Running<S2SV_blank>spawn<S2SV_blank>command<S2SV_blank>%s\" , arg_argv [ 0 ] ) ; n_fds = 0 ; if ( fds != NULL ) n_fds = g_variant_n_children ( arg_fds ) ; fd_map = g_new0 ( FdMapEntry , n_fds ) ; child_setup_data . fd_map = fd_map ; child_setup_data . fd_map_len = n_fds ; max_fd = - 1 ; for ( i = 0 ; i < n_fds ; i ++ ) { gint32 handle , dest_fd ; int handle_fd ; g_variant_get_child ( arg_fds , i , \"{uh}\" , & dest_fd , & handle ) ; if ( handle >= fds_len || handle < 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>file<S2SV_blank>descriptor<S2SV_blank>for<S2SV_blank>handle<S2SV_blank>%d\" , handle ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } handle_fd = fds [ handle ] ; fd_map [ i ] . to = dest_fd ; fd_map [ i ] . from = handle_fd ; fd_map [ i ] . final = fd_map [ i ] . to ; if ( ( dest_fd == 0 || dest_fd == 1 || dest_fd == 2 ) && ! child_setup_data . set_tty && isatty ( handle_fd ) ) { child_setup_data . set_tty = TRUE ; child_setup_data . tty = handle_fd ; } max_fd = MAX ( max_fd , fd_map [ i ] . to ) ; max_fd = MAX ( max_fd , fd_map [ i ] . from ) ; } for ( i = 0 ; i < n_fds ; i ++ ) { int to_fd = fd_map [ i ] . to ; gboolean conflict = FALSE ; for ( j = i + 1 ; j < n_fds ; j ++ ) { int from_fd = fd_map [ j ] . from ; if ( from_fd == to_fd ) { conflict = TRUE ; break ; } } if ( conflict ) fd_map [ i ] . to = ++ max_fd ; } if ( arg_flags & FLATPAK_SPAWN_FLAGS_CLEAR_ENV ) { char * empty [ ] = { NULL } ; env = g_strdupv ( empty ) ; } else env = g_get_environ ( ) ; n_envs = g_variant_n_children ( arg_envs ) ; for ( i = 0 ; i < n_envs ; i ++ ) { const char * var = NULL ; const char * val = NULL ; g_variant_get_child ( arg_envs , i , \"{&s&s}\" , & var , & val ) ; <S2SV_StartBug> env = g_environ_setenv ( env , var , val , TRUE ) ; <S2SV_EndBug> } g_ptr_array_add ( flatpak_argv , g_strdup ( \"flatpak\" ) ) ; g_ptr_array_add ( flatpak_argv , g_strdup ( \"run\" ) ) ; sandboxed = ( arg_flags & FLATPAK_SPAWN_FLAGS_SANDBOX ) != 0 ; if ( sandboxed ) { g_ptr_array_add ( flatpak_argv , g_strdup ( \"--sandbox\" ) ) ; if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_SHARE_DISPLAY ) { if ( sockets != NULL && g_strv_contains ( ( const char * const * ) sockets , \"wayland\" ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--socket=wayland\" ) ) ; if ( sockets != NULL && g_strv_contains ( ( const char * const * ) sockets , \"fallback-x11\" ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--socket=fallback-x11\" ) ) ; if ( sockets != NULL && g_strv_contains ( ( const char * const * ) sockets , \"x11\" ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--socket=x11\" ) ) ; if ( shares != NULL && g_strv_contains ( ( const char * const * ) shares , \"ipc\" ) && sockets != NULL && ( g_strv_contains ( ( const char * const * ) sockets , \"fallback-x11\" ) || g_strv_contains ( ( const char * const * ) sockets , \"x11\" ) ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--share=ipc\" ) ) ; } if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_SHARE_SOUND ) { if ( sockets != NULL && g_strv_contains ( ( const char * const * ) sockets , \"pulseaudio\" ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--socket=pulseaudio\" ) ) ; } if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_SHARE_GPU ) { if ( devices != NULL && ( g_strv_contains ( ( const char * const * ) devices , \"dri\" ) || g_strv_contains ( ( const char * const * ) devices , \"all\" ) ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--device=dri\" ) ) ; } if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_ALLOW_DBUS ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--session-bus\" ) ) ; if ( sandbox_flags & FLATPAK_SPAWN_SANDBOX_FLAGS_ALLOW_A11Y ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--a11y-bus\" ) ) ; } else { for ( i = 0 ; extra_args != NULL && extra_args [ i ] != NULL ; i ++ ) { if ( g_str_has_prefix ( extra_args [ i ] , \"--env=\" ) ) { const char * var_val = extra_args [ i ] + strlen ( \"--env=\" ) ; if ( var_val [ 0 ] == '\\\\0' || var_val [ 0 ] == '=' ) { g_warning ( \"Environment<S2SV_blank>variable<S2SV_blank>in<S2SV_blank>extra-args<S2SV_blank>has<S2SV_blank>empty<S2SV_blank>name\" ) ; continue ; } if ( strchr ( var_val , '=' ) == NULL ) { g_warning ( \"Environment<S2SV_blank>variable<S2SV_blank>in<S2SV_blank>extra-args<S2SV_blank>has<S2SV_blank>no<S2SV_blank>value\" ) ; continue ; } g_string_append ( env_string , var_val ) ; g_string_append_c ( env_string , '\\\\0' ) ; } else { g_ptr_array_add ( flatpak_argv , g_strdup ( extra_args [ i ] ) ) ; } } } if ( env_string -> len > 0 ) { g_auto ( GLnxTmpfile ) env_tmpf = { 0 , } ; if ( ! flatpak_buffer_to_sealed_memfd_or_tmpfile ( & env_tmpf , \"environ\" , env_string -> str , env_string -> len , & error ) ) { g_dbus_method_invocation_return_gerror ( invocation , error ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } child_setup_data . env_fd = glnx_steal_fd ( & env_tmpf . fd ) ; g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--env-fd=%d\" , child_setup_data . env_fd ) ) ; } expose_pids = ( arg_flags & FLATPAK_SPAWN_FLAGS_EXPOSE_PIDS ) != 0 ; share_pids = ( arg_flags & FLATPAK_SPAWN_FLAGS_SHARE_PIDS ) != 0 ; if ( expose_pids || share_pids ) { g_autofree char * instance_id = NULL ; int sender_pid1 = 0 ; if ( ! ( supports & FLATPAK_SPAWN_SUPPORT_FLAGS_EXPOSE_PIDS ) ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_NOT_SUPPORTED , \"Expose<S2SV_blank>pids<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>with<S2SV_blank>setuid<S2SV_blank>bwrap\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } instance_id = g_key_file_get_string ( app_info , FLATPAK_METADATA_GROUP_INSTANCE , FLATPAK_METADATA_KEY_INSTANCE_ID , NULL ) ; if ( instance_id ) { g_autoptr ( FlatpakInstance ) instance = flatpak_instance_new_for_id ( instance_id ) ; sender_pid1 = flatpak_instance_get_child_pid ( instance ) ; } if ( sender_pid1 == 0 ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Could<S2SV_blank>not<S2SV_blank>find<S2SV_blank>requesting<S2SV_blank>pid\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--parent-pid=%d\" , sender_pid1 ) ) ; if ( share_pids ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--parent-share-pids\" ) ) ; else g_ptr_array_add ( flatpak_argv , g_strdup ( \"--parent-expose-pids\" ) ) ; } notify_start = ( arg_flags & FLATPAK_SPAWN_FLAGS_NOTIFY_START ) != 0 ; if ( notify_start ) { int pipe_fds [ 2 ] ; if ( pipe ( pipe_fds ) == - 1 ) { int errsv = errno ; g_dbus_method_invocation_return_error ( invocation , G_IO_ERROR , g_io_error_from_errno ( errsv ) , \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>instance<S2SV_blank>ID<S2SV_blank>pipe:<S2SV_blank>%s\" , g_strerror ( errsv ) ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } GInputStream * in_stream = G_INPUT_STREAM ( g_unix_input_stream_new ( pipe_fds [ 0 ] , TRUE ) ) ; instance_id_out_stream = G_OUTPUT_STREAM ( g_unix_output_stream_new ( pipe_fds [ 1 ] , TRUE ) ) ; instance_id_read_data = g_new0 ( InstanceIdReadData , 1 ) ; g_input_stream_read_async ( in_stream , instance_id_read_data -> buffer , INSTANCE_ID_BUFFER_SIZE - 1 , G_PRIORITY_DEFAULT , NULL , instance_id_read_finish , instance_id_read_data ) ; g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--instance-id-fd=%d\" , pipe_fds [ 1 ] ) ) ; child_setup_data . instance_id_fd = pipe_fds [ 1 ] ; } if ( devel ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--devel\" ) ) ; if ( shares != NULL && g_strv_contains ( ( const char * const * ) shares , \"network\" ) && ! ( arg_flags & FLATPAK_SPAWN_FLAGS_NO_NETWORK ) ) g_ptr_array_add ( flatpak_argv , g_strdup ( \"--share=network\" ) ) ; else g_ptr_array_add ( flatpak_argv , g_strdup ( \"--unshare=network\" ) ) ; if ( instance_path ) { for ( i = 0 ; sandbox_expose != NULL && sandbox_expose [ i ] != NULL ; i ++ ) g_ptr_array_add ( flatpak_argv , filesystem_sandbox_arg ( instance_path , sandbox_expose [ i ] , FALSE ) ) ; for ( i = 0 ; sandbox_expose_ro != NULL && sandbox_expose_ro [ i ] != NULL ; i ++ ) g_ptr_array_add ( flatpak_argv , filesystem_sandbox_arg ( instance_path , sandbox_expose_ro [ i ] , TRUE ) ) ; } for ( i = 0 ; sandbox_expose_ro != NULL && sandbox_expose_ro [ i ] != NULL ; i ++ ) { const char * expose = sandbox_expose_ro [ i ] ; g_debug ( \"exposing<S2SV_blank>%s\" , expose ) ; } if ( sandbox_expose_fd != NULL ) { gsize len = g_variant_n_children ( sandbox_expose_fd ) ; for ( i = 0 ; i < len ; i ++ ) { gint32 handle ; g_variant_get_child ( sandbox_expose_fd , i , \"h\" , & handle ) ; if ( handle >= 0 && handle < fds_len ) { int handle_fd = fds [ handle ] ; g_autofree char * path = NULL ; gboolean writable = FALSE ; path = get_path_for_fd ( handle_fd , & writable , & error ) ; if ( path ) { g_ptr_array_add ( flatpak_argv , filesystem_arg ( path , ! writable ) ) ; } else { g_debug ( \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>path<S2SV_blank>for<S2SV_blank>sandbox-exposed<S2SV_blank>fd<S2SV_blank>%d,<S2SV_blank>ignoring:<S2SV_blank>%s\" , handle_fd , error -> message ) ; g_clear_error ( & error ) ; } } else { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>file<S2SV_blank>descriptor<S2SV_blank>for<S2SV_blank>handle<S2SV_blank>%d\" , handle ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } } } if ( sandbox_expose_fd_ro != NULL ) { gsize len = g_variant_n_children ( sandbox_expose_fd_ro ) ; for ( i = 0 ; i < len ; i ++ ) { gint32 handle ; g_variant_get_child ( sandbox_expose_fd_ro , i , \"h\" , & handle ) ; if ( handle >= 0 && handle < fds_len ) { int handle_fd = fds [ handle ] ; g_autofree char * path = NULL ; gboolean writable = FALSE ; path = get_path_for_fd ( handle_fd , & writable , & error ) ; if ( path ) { g_ptr_array_add ( flatpak_argv , filesystem_arg ( path , TRUE ) ) ; } else { g_debug ( \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>path<S2SV_blank>for<S2SV_blank>sandbox-exposed<S2SV_blank>fd<S2SV_blank>%d,<S2SV_blank>ignoring:<S2SV_blank>%s\" , handle_fd , error -> message ) ; g_clear_error ( & error ) ; } } else { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"No<S2SV_blank>file<S2SV_blank>descriptor<S2SV_blank>for<S2SV_blank>handle<S2SV_blank>%d\" , handle ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } } } g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--runtime=%s\" , runtime_parts [ 1 ] ) ) ; g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--runtime-version=%s\" , runtime_parts [ 3 ] ) ) ; if ( ( arg_flags & FLATPAK_SPAWN_FLAGS_LATEST_VERSION ) == 0 ) { if ( app_commit ) g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--commit=%s\" , app_commit ) ) ; if ( runtime_commit ) g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--runtime-commit=%s\" , runtime_commit ) ) ; } if ( arg_cwd_path != NULL ) g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--cwd=%s\" , arg_cwd_path ) ) ; if ( arg_argv [ 0 ] [ 0 ] != 0 ) g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"--command=%s\" , arg_argv [ 0 ] ) ) ; g_ptr_array_add ( flatpak_argv , g_strdup_printf ( \"%s/%s/%s\" , app_id , arch ? arch : \"\" , branch ? branch : \"\" ) ) ; for ( i = 1 ; arg_argv [ i ] != NULL ; i ++ ) g_ptr_array_add ( flatpak_argv , g_strdup ( arg_argv [ i ] ) ) ; g_ptr_array_add ( flatpak_argv , NULL ) ; if ( opt_verbose ) { g_autoptr ( GString ) cmd = g_string_new ( \"\" ) ; for ( i = 0 ; flatpak_argv -> pdata [ i ] != NULL ; i ++ ) { if ( i > 0 ) g_string_append ( cmd , \"<S2SV_blank>\" ) ; g_string_append ( cmd , flatpak_argv -> pdata [ i ] ) ; } g_debug ( \"Starting:<S2SV_blank>%s\\\\n\" , cmd -> str ) ; } if ( ! g_spawn_async_with_pipes ( NULL , ( char * * ) flatpak_argv -> pdata , env , G_SPAWN_SEARCH_PATH | G_SPAWN_DO_NOT_REAP_CHILD | G_SPAWN_LEAVE_DESCRIPTORS_OPEN , child_setup_func , & child_setup_data , & pid , NULL , NULL , NULL , & error ) ) { gint code = G_DBUS_ERROR_FAILED ; if ( g_error_matches ( error , G_SPAWN_ERROR , G_SPAWN_ERROR_ACCES ) ) code = G_DBUS_ERROR_ACCESS_DENIED ; else if ( g_error_matches ( error , G_SPAWN_ERROR , G_SPAWN_ERROR_NOENT ) ) code = G_DBUS_ERROR_FILE_NOT_FOUND ; g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , code , \"Failed<S2SV_blank>to<S2SV_blank>start<S2SV_blank>command:<S2SV_blank>%s\" , error -> message ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( instance_id_read_data ) instance_id_read_data -> pid = pid ; pid_data = g_new0 ( PidData , 1 ) ; pid_data -> pid = pid ; pid_data -> client = g_strdup ( g_dbus_method_invocation_get_sender ( invocation ) ) ; pid_data -> watch_bus = ( arg_flags & FLATPAK_SPAWN_FLAGS_WATCH_BUS ) != 0 ; pid_data -> expose_or_share_pids = ( expose_pids || share_pids ) ; pid_data -> child_watch = g_child_watch_add_full ( G_PRIORITY_DEFAULT , pid , child_watch_died , pid_data , NULL ) ; g_debug ( \"Client<S2SV_blank>Pid<S2SV_blank>is<S2SV_blank>%d\" , pid_data -> pid ) ; g_hash_table_replace ( client_pid_data_hash , GUINT_TO_POINTER ( pid_data -> pid ) , pid_data ) ; portal_flatpak_complete_spawn ( object , invocation , NULL , pid ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) ; if ( var [ 0 ] == '\\\\0' ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Environment<S2SV_blank>variable<S2SV_blank>cannot<S2SV_blank>have<S2SV_blank>empty<S2SV_blank>name\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } if ( strchr ( var , '=' ) != NULL ) { g_dbus_method_invocation_return_error ( invocation , G_DBUS_ERROR , G_DBUS_ERROR_INVALID_ARGS , \"Environment<S2SV_blank>variable<S2SV_blank>name<S2SV_blank>cannot<S2SV_blank>contain<S2SV_blank>\\'=\\'\" ) ; return G_DBUS_METHOD_INVOCATION_HANDLED ; } g_string_append ( env_string , var ) ; g_string_append_c ( env_string , '=' ) ; g_string_append ( env_string , val ) ; g_string_append_c ( env_string , '\\\\0' <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15921\n\n```\nCWE-401 int genl_register_family ( struct genl_family * family ) { int err , i ; int start = GENL_START_ALLOC , end = GENL_MAX_ID ; err = genl_validate_ops ( family ) ; if ( err ) return err ; genl_lock_all ( ) ; if ( genl_family_find_byname ( family -> name ) ) { err = - EEXIST ; goto errout_locked ; } if ( family == & genl_ctrl ) { start = end = GENL_ID_CTRL ; } else if ( strcmp ( family -> name , \"pmcraid\" ) == 0 ) { start = end = GENL_ID_PMCRAID ; } else if ( strcmp ( family -> name , \"VFS_DQUOT\" ) == 0 ) { start = end = GENL_ID_VFS_DQUOT ; } if ( family -> maxattr && ! family -> parallel_ops ) { family -> attrbuf = kmalloc_array ( family -> maxattr + 1 , sizeof ( struct nlattr * ) , GFP_KERNEL ) ; if ( family -> attrbuf == NULL ) { err = - ENOMEM ; goto errout_locked ; } } else family -> attrbuf = NULL ; family -> id = idr_alloc ( & genl_fam_idr , family , start , end + 1 , GFP_KERNEL ) ; if ( family -> id < 0 ) { err = family -> id ; <S2SV_StartBug> goto errout_locked ; <S2SV_EndBug> } err = genl_validate_assign_mc_groups ( family ) ; if ( err ) goto errout_remove ; genl_unlock_all ( ) ; genl_ctrl_event ( CTRL_CMD_NEWFAMILY , family , NULL , 0 ) ; for ( i = 0 ; i < family -> n_mcgrps ; i ++ ) genl_ctrl_event ( CTRL_CMD_NEWMCAST_GRP , family , & family -> mcgrps [ i ] , family -> mcgrp_offset + i ) ; return 0 ; errout_remove : idr_remove ( & genl_fam_idr , family -> id ) ; <S2SV_StartBug> kfree ( family -> attrbuf ) ; <S2SV_EndBug> errout_locked : genl_unlock_all ( ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ; goto errout_free <S2SV_ModEnd> ; } err <S2SV_ModStart> id ) ; errout_free :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horDiff16 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { TIFFPredictorState * sp = PredictorState ( tif ) ; tmsize_t stride = sp -> stride ; uint16 * wp = ( uint16 * ) cp0 ; tmsize_t wc = cc / 2 ; <S2SV_StartBug> assert ( ( cc % ( 2 * stride ) ) == 0 ) ; <S2SV_EndBug> if ( wc > stride ) { wc -= stride ; wp += wc - 1 ; do { REPEAT4 ( stride , wp [ stride ] = ( uint16 ) ( ( ( unsigned int ) wp [ stride ] - ( unsigned int ) wp [ 0 ] ) & 0xffff ) ; wp -- ) wc -= stride ; } while ( wc > 0 ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horDiff16 ( TIFF <S2SV_ModStart> / 2 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horDiff8\" , \"%s\" , \"(cc%(2*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( wc <S2SV_ModStart> ) ; } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static struct page * follow_page_pte ( struct vm_area_struct * vma , unsigned long address , pmd_t * pmd , unsigned int flags , struct dev_pagemap * * pgmap ) { struct mm_struct * mm = vma -> vm_mm ; struct page * page ; spinlock_t * ptl ; pte_t * ptep , pte ; retry : if ( unlikely ( pmd_bad ( * pmd ) ) ) return no_page_table ( vma , flags ) ; ptep = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; pte = * ptep ; if ( ! pte_present ( pte ) ) { swp_entry_t entry ; if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) goto no_page ; if ( pte_none ( pte ) ) goto no_page ; entry = pte_to_swp_entry ( pte ) ; if ( ! is_migration_entry ( entry ) ) goto no_page ; pte_unmap_unlock ( ptep , ptl ) ; migration_entry_wait ( mm , pmd , address ) ; goto retry ; } if ( ( flags & FOLL_NUMA ) && pte_protnone ( pte ) ) goto no_page ; if ( ( flags & FOLL_WRITE ) && ! can_follow_write_pte ( pte , flags ) ) { pte_unmap_unlock ( ptep , ptl ) ; return NULL ; } page = vm_normal_page ( vma , address , pte ) ; if ( ! page && pte_devmap ( pte ) && ( flags & FOLL_GET ) ) { * pgmap = get_dev_pagemap ( pte_pfn ( pte ) , * pgmap ) ; if ( * pgmap ) page = pte_page ( pte ) ; else goto no_page ; } else if ( unlikely ( ! page ) ) { if ( flags & FOLL_DUMP ) { page = ERR_PTR ( - EFAULT ) ; goto out ; } if ( is_zero_pfn ( pte_pfn ( pte ) ) ) { page = pte_page ( pte ) ; } else { int ret ; ret = follow_pfn_pte ( vma , address , ptep , flags ) ; page = ERR_PTR ( ret ) ; goto out ; } } if ( flags & FOLL_SPLIT && PageTransCompound ( page ) ) { int ret ; get_page ( page ) ; pte_unmap_unlock ( ptep , ptl ) ; lock_page ( page ) ; ret = split_huge_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; if ( ret ) return ERR_PTR ( ret ) ; goto retry ; } if ( flags & FOLL_GET ) <S2SV_StartBug> get_page ( page ) ; <S2SV_EndBug> if ( flags & FOLL_TOUCH ) { if ( ( flags & FOLL_WRITE ) && ! pte_dirty ( pte ) && ! PageDirty ( page ) ) set_page_dirty ( page ) ; mark_page_accessed ( page ) ; } if ( ( flags & FOLL_MLOCK ) && ( vma -> vm_flags & VM_LOCKED ) ) { if ( PageTransCompound ( page ) ) goto out ; if ( page -> mapping && trylock_page ( page ) ) { lru_add_drain ( ) ; mlock_vma_page ( page ) ; unlock_page ( page ) ; } } out : pte_unmap_unlock ( ptep , ptl ) ; return page ; no_page : pte_unmap_unlock ( ptep , ptl ) ; if ( ! pte_none ( pte ) ) return NULL ; return no_page_table ( vma , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & FOLL_GET ) { if ( unlikely ( ! try_get_page ( page ) ) ) { page = ERR_PTR ( - ENOMEM ) ; goto out ; } } <S2SV_ModEnd> if ( flags\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4653\n\n```\nCWE-000 static int snd_ctl_tlv_ioctl ( struct snd_ctl_file * file , struct snd_ctl_tlv __user * _tlv , int op_flag ) { struct snd_card * card = file -> card ; struct snd_ctl_tlv tlv ; struct snd_kcontrol * kctl ; struct snd_kcontrol_volatile * vd ; unsigned int len ; int err = 0 ; if ( copy_from_user ( & tlv , _tlv , sizeof ( tlv ) ) ) return - EFAULT ; if ( tlv . length < sizeof ( unsigned int ) * 2 ) return - EINVAL ; down_read ( & card -> controls_rwsem ) ; kctl = snd_ctl_find_numid ( card , tlv . numid ) ; if ( kctl == NULL ) { err = - ENOENT ; goto __kctl_end ; } if ( kctl -> tlv . p == NULL ) { err = - ENXIO ; goto __kctl_end ; } vd = & kctl -> vd [ tlv . numid - kctl -> id . numid ] ; if ( ( op_flag == 0 && ( vd -> access & SNDRV_CTL_ELEM_ACCESS_TLV_READ ) == 0 ) || ( op_flag > 0 && ( vd -> access & SNDRV_CTL_ELEM_ACCESS_TLV_WRITE ) == 0 ) || ( op_flag < 0 && ( vd -> access & SNDRV_CTL_ELEM_ACCESS_TLV_COMMAND ) == 0 ) ) { err = - ENXIO ; goto __kctl_end ; } if ( vd -> access & SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK ) { if ( vd -> owner != NULL && vd -> owner != file ) { err = - EPERM ; goto __kctl_end ; } err = kctl -> tlv . c ( kctl , op_flag , tlv . length , _tlv -> tlv ) ; if ( err > 0 ) { <S2SV_StartBug> up_read ( & card -> controls_rwsem ) ; <S2SV_EndBug> <S2SV_StartBug> snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_TLV , & kctl -> id ) ; <S2SV_EndBug> return 0 ; } } else { if ( op_flag ) { err = - ENXIO ; goto __kctl_end ; } len = kctl -> tlv . p [ 1 ] + 2 * sizeof ( unsigned int ) ; if ( tlv . length < len ) { err = - ENOMEM ; goto __kctl_end ; } if ( copy_to_user ( _tlv -> tlv , kctl -> tlv . p , len ) ) err = - EFAULT ; } __kctl_end : up_read ( & card -> controls_rwsem ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { struct snd_ctl_elem_id id = kctl -> id ; <S2SV_ModStart> SNDRV_CTL_EVENT_MASK_TLV , & <S2SV_ModEnd> id ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13137\n\n```\nCWE-401 static Image * ReadPSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define BoundingBox \"BoundingBox:\" # define BeginDocument \"BeginDocument:\" # define BeginXMPPacket \"<?xpacket<S2SV_blank>begin=\" # define EndXMPPacket \"<?xpacket<S2SV_blank>end=\" # define ICCProfile \"BeginICCProfile:\" # define CMYKCustomColor \"CMYKCustomColor:\" # define CMYKProcessColor \"CMYKProcessColor:\" # define DocumentMedia \"DocumentMedia:\" # define DocumentCustomColors \"DocumentCustomColors:\" # define DocumentProcessColors \"DocumentProcessColors:\" # define EndDocument \"EndDocument:\" # define HiResBoundingBox \"HiResBoundingBox:\" # define ImageData \"ImageData:\" # define PageBoundingBox \"PageBoundingBox:\" # define LanguageLevel \"LanguageLevel:\" # define PageMedia \"PageMedia:\" # define Pages \"Pages:\" # define PhotoshopProfile \"BeginPhotoshop:\" # define PostscriptLevel \"!PS-\" # define RenderPostscriptText \"<S2SV_blank><S2SV_blank>Rendering<S2SV_blank>Postscript...<S2SV_blank><S2SV_blank>\" # define SpotColor \"+<S2SV_blank>\" char command [ MaxTextExtent ] , * density , filename [ MaxTextExtent ] , geometry [ MaxTextExtent ] , input_filename [ MaxTextExtent ] , message [ MaxTextExtent ] , * options , postscript_filename [ MaxTextExtent ] ; const char * option ; const DelegateInfo * delegate_info ; GeometryInfo geometry_info ; Image * image , * next , * postscript_image ; ImageInfo * read_info ; int c , file ; MagickBooleanType cmyk , fitPage , skip , status ; MagickStatusType flags ; PointInfo delta , resolution ; RectangleInfo page ; register char * p ; register ssize_t i ; SegmentInfo bounds , hires_bounds ; short int hex_digits [ 256 ] ; size_t length , priority ; ssize_t count ; StringInfo * profile ; unsigned long columns , extent , language_level , pages , rows , scene , spotcolor ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } status = AcquireUniqueSymbolicLink ( image_info -> filename , input_filename ) ; if ( status == MagickFalse ) { ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( hex_digits , 0 , sizeof ( hex_digits ) ) ; hex_digits [ ( int ) '0' ] = 0 ; hex_digits [ ( int ) '1' ] = 1 ; hex_digits [ ( int ) '2' ] = 2 ; hex_digits [ ( int ) '3' ] = 3 ; hex_digits [ ( int ) '4' ] = 4 ; hex_digits [ ( int ) '5' ] = 5 ; hex_digits [ ( int ) '6' ] = 6 ; hex_digits [ ( int ) '7' ] = 7 ; hex_digits [ ( int ) '8' ] = 8 ; hex_digits [ ( int ) '9' ] = 9 ; hex_digits [ ( int ) 'a' ] = 10 ; hex_digits [ ( int ) 'b' ] = 11 ; hex_digits [ ( int ) 'c' ] = 12 ; hex_digits [ ( int ) 'd' ] = 13 ; hex_digits [ ( int ) 'e' ] = 14 ; hex_digits [ ( int ) 'f' ] = 15 ; hex_digits [ ( int ) 'A' ] = 10 ; hex_digits [ ( int ) 'B' ] = 11 ; hex_digits [ ( int ) 'C' ] = 12 ; hex_digits [ ( int ) 'D' ] = 13 ; hex_digits [ ( int ) 'E' ] = 14 ; hex_digits [ ( int ) 'F' ] = 15 ; delta . x = DefaultResolution ; delta . y = DefaultResolution ; if ( ( image -> x_resolution == 0.0 ) || ( image -> y_resolution == 0.0 ) ) { flags = ParseGeometry ( PSDensityGeometry , & geometry_info ) ; image -> x_resolution = geometry_info . rho ; image -> y_resolution = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> y_resolution = image -> x_resolution ; } if ( image_info -> density != ( char * ) NULL ) { flags = ParseGeometry ( image_info -> density , & geometry_info ) ; image -> x_resolution = geometry_info . rho ; image -> y_resolution = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> y_resolution = image -> x_resolution ; } ( void ) ParseAbsoluteGeometry ( PSPageGeometry , & page ) ; if ( image_info -> page != ( char * ) NULL ) ( void ) ParseAbsoluteGeometry ( image_info -> page , & page ) ; resolution . x = image -> x_resolution ; resolution . y = image -> y_resolution ; page . width = ( size_t ) ceil ( ( double ) ( page . width * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * resolution . y / delta . y ) - 0.5 ) ; ( void ) memset ( & bounds , 0 , sizeof ( bounds ) ) ; ( void ) memset ( command , 0 , sizeof ( command ) ) ; cmyk = image_info -> colorspace == CMYKColorspace ? MagickTrue : MagickFalse ; ( void ) memset ( & hires_bounds , 0 , sizeof ( hires_bounds ) ) ; priority = 0 ; columns = 0 ; rows = 0 ; extent = 0 ; spotcolor = 0 ; language_level = 1 ; skip = MagickFalse ; pages = ( ~ 0UL ) ; p = command ; for ( c = ReadBlobByte ( image ) ; c != EOF ; c = ReadBlobByte ( image ) ) { * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MaxTextExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( BeginDocument , command , strlen ( BeginDocument ) ) == 0 ) skip = MagickTrue ; if ( LocaleNCompare ( EndDocument , command , strlen ( EndDocument ) ) == 0 ) skip = MagickFalse ; if ( skip != MagickFalse ) continue ; if ( LocaleNCompare ( PostscriptLevel , command , strlen ( PostscriptLevel ) ) == 0 ) { ( void ) SetImageProperty ( image , \"ps:Level\" , command + 4 ) ; if ( GlobExpression ( command , \"*EPSF-*\" , MagickTrue ) != MagickFalse ) pages = 1 ; } if ( LocaleNCompare ( LanguageLevel , command , strlen ( LanguageLevel ) ) == 0 ) ( void ) sscanf ( command , LanguageLevel \"<S2SV_blank>%lu\" , & language_level ) ; if ( LocaleNCompare ( Pages , command , strlen ( Pages ) ) == 0 ) ( void ) sscanf ( command , Pages \"<S2SV_blank>%lu\" , & pages ) ; if ( LocaleNCompare ( ImageData , command , strlen ( ImageData ) ) == 0 ) ( void ) sscanf ( command , ImageData \"<S2SV_blank>%lu<S2SV_blank>%lu\" , & columns , & rows ) ; length = strlen ( DocumentProcessColors ) ; if ( LocaleNCompare ( DocumentProcessColors , command , length ) == 0 ) { if ( ( GlobExpression ( command , \"*Cyan*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Magenta*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Yellow*\" , MagickTrue ) != MagickFalse ) ) cmyk = MagickTrue ; } if ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) cmyk = MagickTrue ; if ( LocaleNCompare ( CMYKProcessColor , command , strlen ( CMYKProcessColor ) ) == 0 ) cmyk = MagickTrue ; length = strlen ( DocumentCustomColors ) ; if ( ( LocaleNCompare ( DocumentCustomColors , command , length ) == 0 ) || ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) || ( LocaleNCompare ( SpotColor , command , strlen ( SpotColor ) ) == 0 ) ) { char property [ MaxTextExtent ] , * value ; register char * p ; ( void ) FormatLocaleString ( property , MaxTextExtent , \"ps:SpotColor-%.20g\" , ( double ) ( spotcolor ++ ) ) ; for ( p = command ; * p != '\\\\0' ; p ++ ) if ( isspace ( ( int ) ( unsigned char ) * p ) != 0 ) break ; value = ConstantString ( p ) ; ( void ) SubstituteString ( & value , \"(\" , \"\" ) ; ( void ) SubstituteString ( & value , \")\" , \"\" ) ; ( void ) StripString ( value ) ; if ( * value != '\\\\0' ) ( void ) SetImageProperty ( image , property , value ) ; value = DestroyString ( value ) ; continue ; } if ( image_info -> page != ( char * ) NULL ) continue ; count = 0 ; i = 0 ; if ( LocaleNCompare ( BoundingBox , command , strlen ( BoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , BoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 2 ; } if ( LocaleNCompare ( DocumentMedia , command , strlen ( DocumentMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , DocumentMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( HiResBoundingBox , command , strlen ( HiResBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , HiResBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 3 ; } if ( LocaleNCompare ( PageBoundingBox , command , strlen ( PageBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( PageMedia , command , strlen ( PageMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( ( count != 4 ) || ( i < ( ssize_t ) priority ) ) continue ; if ( ( fabs ( bounds . x2 - bounds . x1 ) <= fabs ( hires_bounds . x2 - hires_bounds . x1 ) ) || ( fabs ( bounds . y2 - bounds . y1 ) <= fabs ( hires_bounds . y2 - hires_bounds . y1 ) ) ) if ( i == ( ssize_t ) priority ) continue ; hires_bounds = bounds ; priority = ( size_t ) i ; } if ( ( fabs ( hires_bounds . x2 - hires_bounds . x1 ) >= MagickEpsilon ) && ( fabs ( hires_bounds . y2 - hires_bounds . y1 ) >= MagickEpsilon ) ) { ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%gx%g%+.15g%+.15g\" , hires_bounds . x2 - hires_bounds . x1 , hires_bounds . y2 - hires_bounds . y1 , hires_bounds . x1 , hires_bounds . y1 ) ; ( void ) SetImageProperty ( image , \"ps:HiResBoundingBox\" , geometry ) ; page . width = ( size_t ) ceil ( ( double ) ( ( hires_bounds . x2 - hires_bounds . x1 ) * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( ( hires_bounds . y2 - hires_bounds . y1 ) * resolution . y / delta . y ) - 0.5 ) ; } fitPage = MagickFalse ; option = GetImageOption ( image_info , \"eps:fit-page\" ) ; if ( option != ( char * ) NULL ) { char * geometry ; MagickStatusType flags ; geometry = GetPageGeometry ( option ) ; flags = ParseMetaGeometry ( geometry , & page . x , & page . y , & page . width , & page . height ) ; if ( flags == NoValue ) { ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , OptionError , <S2SV_StartBug> \"InvalidGeometry\" , \"`%s\\'\" , option ) ; <S2SV_EndBug> image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } page . width = ( size_t ) ceil ( ( double ) ( page . width * image -> x_resolution / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * image -> y_resolution / delta . y ) - 0.5 ) ; geometry = DestroyString ( geometry ) ; fitPage = MagickTrue ; } if ( IssRGBCompatibleColorspace ( image_info -> colorspace ) != MagickFalse ) cmyk = MagickFalse ; file = AcquireUniqueFileResource ( postscript_filename ) ; if ( file == - 1 ) { ThrowFileException ( & image -> exception , FileOpenError , \"UnableToOpenFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( command , \"/setpagedevice<S2SV_blank>{pop}<S2SV_blank>bind<S2SV_blank>1<S2SV_blank>index<S2SV_blank>where<S2SV_blank>{\" \"dup<S2SV_blank>wcheck<S2SV_blank>{3<S2SV_blank>1<S2SV_blank>roll<S2SV_blank>put}<S2SV_blank>{pop<S2SV_blank>def}<S2SV_blank>ifelse}<S2SV_blank>{def}<S2SV_blank>ifelse\\\\n\" \"<</UseCIEColor<S2SV_blank>true>>setpagedevice\\\\n\" , MaxTextExtent ) ; count = write ( file , command , ( unsigned int ) strlen ( command ) ) ; if ( image_info -> page == ( char * ) NULL ) { char translate_geometry [ MaxTextExtent ] ; ( void ) FormatLocaleString ( translate_geometry , MaxTextExtent , \"%g<S2SV_blank>%g<S2SV_blank>translate\\\\n\" , - hires_bounds . x1 , - hires_bounds . y1 ) ; count = write ( file , translate_geometry , ( unsigned int ) strlen ( translate_geometry ) ) ; } file = close ( file ) - 1 ; if ( image_info -> monochrome != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:mono\" , ( char * ) NULL , exception ) ; else if ( cmyk != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:cmyk\" , ( char * ) NULL , exception ) ; else delegate_info = GetDelegateInfo ( \"ps:alpha\" , ( char * ) NULL , exception ) ; if ( delegate_info == ( const DelegateInfo * ) NULL ) { ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } density = AcquireString ( \"\" ) ; options = AcquireString ( \"\" ) ; ( void ) FormatLocaleString ( density , MaxTextExtent , \"%gx%g\" , resolution . x , resolution . y ) ; ( void ) FormatLocaleString ( options , MaxTextExtent , \"-g%.20gx%.20g<S2SV_blank>\" , ( double ) page . width , ( double ) page . height ) ; read_info = CloneImageInfo ( image_info ) ; * read_info -> magick = '\\\\0' ; if ( read_info -> number_scenes != 0 ) { char pages [ MaxTextExtent ] ; ( void ) FormatLocaleString ( pages , MaxTextExtent , \"-dFirstPage=%.20g<S2SV_blank>\" \"-dLastPage=%.20g<S2SV_blank>\" , ( double ) read_info -> scene + 1 , ( double ) ( read_info -> scene + read_info -> number_scenes ) ) ; ( void ) ConcatenateMagickString ( options , pages , MaxTextExtent ) ; read_info -> number_scenes = 0 ; if ( read_info -> scenes != ( char * ) NULL ) * read_info -> scenes = '\\\\0' ; } if ( * image_info -> magick == 'E' ) { option = GetImageOption ( image_info , \"eps:use-cropbox\" ) ; if ( ( option == ( const char * ) NULL ) || ( IsStringTrue ( option ) != MagickFalse ) ) ( void ) ConcatenateMagickString ( options , \"-dEPSCrop<S2SV_blank>\" , MaxTextExtent ) ; if ( fitPage != MagickFalse ) ( void ) ConcatenateMagickString ( options , \"-dEPSFitPage<S2SV_blank>\" , MaxTextExtent ) ; } ( void ) CopyMagickString ( filename , read_info -> filename , MaxTextExtent ) ; ( void ) AcquireUniqueFilename ( filename ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; ( void ) ConcatenateMagickString ( filename , \"%d\" , MaxTextExtent ) ; ( void ) FormatLocaleString ( command , MaxTextExtent , GetDelegateCommands ( delegate_info ) , read_info -> antialias != MagickFalse ? 4 : 1 , read_info -> antialias != MagickFalse ? 4 : 1 , density , options , filename , postscript_filename , input_filename ) ; options = DestroyString ( options ) ; density = DestroyString ( density ) ; * message = '\\\\0' ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; ( void ) InterpretImageFilename ( image_info , image , filename , 1 , read_info -> filename ) ; if ( ( status == MagickFalse ) || ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) ) { ( void ) ConcatenateMagickString ( command , \"<S2SV_blank>-c<S2SV_blank>showpage\" , MaxTextExtent ) ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; } ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; ( void ) RelinquishUniqueFileResource ( input_filename ) ; postscript_image = ( Image * ) NULL ; if ( status == MagickFalse ) for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; } else for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; read_info -> blob = NULL ; read_info -> length = 0 ; next = ReadImage ( read_info , exception ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; if ( next == ( Image * ) NULL ) break ; AppendImageToList ( & postscript_image , next ) ; } ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( postscript_image == ( Image * ) NULL ) { if ( * message != '\\\\0' ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , DelegateError , \"PostscriptDelegateFailed\" , \"`%s\\'\" , message ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( LocaleCompare ( postscript_image -> magick , \"BMP\" ) == 0 ) { Image * cmyk_image ; cmyk_image = ConsolidateCMYKImages ( postscript_image , exception ) ; if ( cmyk_image != ( Image * ) NULL ) { postscript_image = DestroyImageList ( postscript_image ) ; postscript_image = cmyk_image ; } } ( void ) SeekBlob ( image , 0 , SEEK_SET ) ; for ( c = ReadBlobByte ( image ) ; c != EOF ; c = ReadBlobByte ( image ) ) { * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MaxTextExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( BeginDocument , command , strlen ( BeginDocument ) ) == 0 ) skip = MagickTrue ; if ( LocaleNCompare ( EndDocument , command , strlen ( EndDocument ) ) == 0 ) skip = MagickFalse ; if ( skip != MagickFalse ) continue ; if ( LocaleNCompare ( PostscriptLevel , command , strlen ( PostscriptLevel ) ) == 0 ) { ( void ) SetImageProperty ( image , \"ps:Level\" , command + 4 ) ; if ( GlobExpression ( command , \"*EPSF-*\" , MagickTrue ) != MagickFalse ) pages = 1 ; } if ( LocaleNCompare ( LanguageLevel , command , strlen ( LanguageLevel ) ) == 0 ) ( void ) sscanf ( command , LanguageLevel \"<S2SV_blank>%lu\" , & language_level ) ; if ( LocaleNCompare ( Pages , command , strlen ( Pages ) ) == 0 ) ( void ) sscanf ( command , Pages \"<S2SV_blank>%lu\" , & pages ) ; if ( LocaleNCompare ( ImageData , command , strlen ( ImageData ) ) == 0 ) ( void ) sscanf ( command , ImageData \"<S2SV_blank>%lu<S2SV_blank>%lu\" , & columns , & rows ) ; if ( LocaleNCompare ( ICCProfile , command , strlen ( ICCProfile ) ) == 0 ) { unsigned char * datum ; profile = AcquireStringInfo ( MaxTextExtent ) ; datum = GetStringInfoDatum ( profile ) ; for ( i = 0 ; ( c = ProfileInteger ( image , hex_digits ) ) != EOF ; i ++ ) { if ( i >= ( ssize_t ) GetStringInfoLength ( profile ) ) { SetStringInfoLength ( profile , ( size_t ) i << 1 ) ; datum = GetStringInfoDatum ( profile ) ; } datum [ i ] = ( unsigned char ) c ; } SetStringInfoLength ( profile , ( size_t ) i + 1 ) ; ( void ) SetImageProfile ( image , \"icc\" , profile ) ; profile = DestroyStringInfo ( profile ) ; continue ; } if ( LocaleNCompare ( PhotoshopProfile , command , strlen ( PhotoshopProfile ) ) == 0 ) { unsigned char * p ; count = ( ssize_t ) sscanf ( command , PhotoshopProfile \"<S2SV_blank>%lu\" , & extent ) ; if ( count != 1 ) continue ; length = extent ; if ( ( MagickSizeType ) length > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; if ( profile != ( StringInfo * ) NULL ) { p = GetStringInfoDatum ( profile ) ; for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) * p ++ = ( unsigned char ) ProfileInteger ( image , hex_digits ) ; ( void ) SetImageProfile ( image , \"8bim\" , profile ) ; profile = DestroyStringInfo ( profile ) ; } continue ; } if ( LocaleNCompare ( BeginXMPPacket , command , strlen ( BeginXMPPacket ) ) == 0 ) { register size_t i ; p = command ; profile = StringToStringInfo ( command ) ; for ( i = GetStringInfoLength ( profile ) - 1 ; c != EOF ; i ++ ) { SetStringInfoLength ( profile , ( size_t ) ( i + 1 ) ) ; c = ReadBlobByte ( image ) ; GetStringInfoDatum ( profile ) [ i ] = ( unsigned char ) c ; * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MaxTextExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( EndXMPPacket , command , strlen ( EndXMPPacket ) ) == 0 ) break ; } SetStringInfoLength ( profile , ( size_t ) i ) ; ( void ) SetImageProfile ( image , \"xmp\" , profile ) ; profile = DestroyStringInfo ( profile ) ; continue ; } } ( void ) CloseBlob ( image ) ; if ( image_info -> number_scenes != 0 ) { Image * clone_image ; register ssize_t i ; for ( i = 0 ; i < ( ssize_t ) image_info -> scene ; i ++ ) { clone_image = CloneImage ( postscript_image , 1 , 1 , MagickTrue , exception ) ; if ( clone_image != ( Image * ) NULL ) PrependImageToList ( & postscript_image , clone_image ) ; } } do { ( void ) CopyMagickString ( postscript_image -> filename , filename , MaxTextExtent ) ; ( void ) CopyMagickString ( postscript_image -> magick , image -> magick , MaxTextExtent ) ; if ( columns != 0 ) postscript_image -> magick_columns = columns ; if ( rows != 0 ) postscript_image -> magick_rows = rows ; postscript_image -> page = page ; ( void ) CloneImageProfiles ( postscript_image , image ) ; ( void ) CloneImageProperties ( postscript_image , image ) ; next = SyncNextImageInList ( postscript_image ) ; if ( next != ( Image * ) NULL ) postscript_image = next ; } while ( next != ( Image * ) NULL ) ; image = DestroyImageList ( image ) ; scene = 0 ; for ( next = GetFirstImageInList ( postscript_image ) ; next != ( Image * ) NULL ; ) { next -> scene = scene ++ ; next = GetNextImageInList ( next ) ; } return ( GetFirstImageInList ( postscript_image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"`%s\\'\" , option ) ; geometry = DestroyString ( geometry\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 <S2SV_StartBug> static inline bool unconditional ( const struct arpt_arp * arp ) <S2SV_EndBug> { static const struct arpt_arp uncond ; <S2SV_StartBug> return memcmp ( arp , & uncond , sizeof ( uncond ) ) == 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( const struct arpt_entry * e <S2SV_ModEnd> ) { static <S2SV_ModStart> uncond ; return e -> target_offset == sizeof ( struct arpt_entry ) && memcmp ( & e -> <S2SV_ModEnd> arp , &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1943\n\n```\nCWE-20 int __kvm_set_memory_region ( struct kvm * kvm , struct kvm_userspace_memory_region * mem , int user_alloc ) { int r ; gfn_t base_gfn ; unsigned long npages ; unsigned long i ; struct kvm_memory_slot * memslot ; struct kvm_memory_slot old , new ; struct kvm_memslots * slots , * old_memslots ; r = - EINVAL ; if ( mem -> memory_size & ( PAGE_SIZE - 1 ) ) goto out ; if ( mem -> guest_phys_addr & ( PAGE_SIZE - 1 ) ) goto out ; <S2SV_StartBug> if ( user_alloc && ( mem -> userspace_addr & ( PAGE_SIZE - 1 ) ) ) <S2SV_EndBug> goto out ; if ( mem -> slot >= KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS ) goto out ; if ( mem -> guest_phys_addr + mem -> memory_size < mem -> guest_phys_addr ) goto out ; memslot = & kvm -> memslots -> memslots [ mem -> slot ] ; base_gfn = mem -> guest_phys_addr >> PAGE_SHIFT ; npages = mem -> memory_size >> PAGE_SHIFT ; r = - EINVAL ; if ( npages > KVM_MEM_MAX_NR_PAGES ) goto out ; if ( ! npages ) mem -> flags &= ~ KVM_MEM_LOG_DIRTY_PAGES ; new = old = * memslot ; new . id = mem -> slot ; new . base_gfn = base_gfn ; new . npages = npages ; new . flags = mem -> flags ; r = - EINVAL ; if ( npages && old . npages && npages != old . npages ) goto out_free ; r = - EEXIST ; for ( i = 0 ; i < KVM_MEMORY_SLOTS ; ++ i ) { struct kvm_memory_slot * s = & kvm -> memslots -> memslots [ i ] ; if ( s == memslot || ! s -> npages ) continue ; if ( ! ( ( base_gfn + npages <= s -> base_gfn ) || ( base_gfn >= s -> base_gfn + s -> npages ) ) ) goto out_free ; } if ( ! ( new . flags & KVM_MEM_LOG_DIRTY_PAGES ) ) new . dirty_bitmap = NULL ; r = - ENOMEM ; # ifndef CONFIG_S390 if ( npages && ! new . rmap ) { new . rmap = vzalloc ( npages * sizeof ( * new . rmap ) ) ; if ( ! new . rmap ) goto out_free ; new . user_alloc = user_alloc ; new . userspace_addr = mem -> userspace_addr ; } if ( ! npages ) goto skip_lpage ; for ( i = 0 ; i < KVM_NR_PAGE_SIZES - 1 ; ++ i ) { unsigned long ugfn ; unsigned long j ; int lpages ; int level = i + 2 ; ( void ) level ; if ( new . lpage_info [ i ] ) continue ; lpages = 1 + ( ( base_gfn + npages - 1 ) >> KVM_HPAGE_GFN_SHIFT ( level ) ) ; lpages -= base_gfn >> KVM_HPAGE_GFN_SHIFT ( level ) ; new . lpage_info [ i ] = vzalloc ( lpages * sizeof ( * new . lpage_info [ i ] ) ) ; if ( ! new . lpage_info [ i ] ) goto out_free ; if ( base_gfn & ( KVM_PAGES_PER_HPAGE ( level ) - 1 ) ) new . lpage_info [ i ] [ 0 ] . write_count = 1 ; if ( ( base_gfn + npages ) & ( KVM_PAGES_PER_HPAGE ( level ) - 1 ) ) new . lpage_info [ i ] [ lpages - 1 ] . write_count = 1 ; ugfn = new . userspace_addr >> PAGE_SHIFT ; if ( ( base_gfn ^ ugfn ) & ( KVM_PAGES_PER_HPAGE ( level ) - 1 ) || ! largepages_enabled ) for ( j = 0 ; j < lpages ; ++ j ) new . lpage_info [ i ] [ j ] . write_count = 1 ; } skip_lpage : if ( ( new . flags & KVM_MEM_LOG_DIRTY_PAGES ) && ! new . dirty_bitmap ) { if ( kvm_create_dirty_bitmap ( & new ) < 0 ) goto out_free ; } # else new . user_alloc = user_alloc ; if ( user_alloc ) new . userspace_addr = mem -> userspace_addr ; # endif if ( ! npages ) { r = - ENOMEM ; slots = kzalloc ( sizeof ( struct kvm_memslots ) , GFP_KERNEL ) ; if ( ! slots ) goto out_free ; memcpy ( slots , kvm -> memslots , sizeof ( struct kvm_memslots ) ) ; if ( mem -> slot >= slots -> nmemslots ) slots -> nmemslots = mem -> slot + 1 ; slots -> generation ++ ; slots -> memslots [ mem -> slot ] . flags |= KVM_MEMSLOT_INVALID ; old_memslots = kvm -> memslots ; rcu_assign_pointer ( kvm -> memslots , slots ) ; synchronize_srcu_expedited ( & kvm -> srcu ) ; kvm_arch_flush_shadow ( kvm ) ; kfree ( old_memslots ) ; } r = kvm_arch_prepare_memory_region ( kvm , & new , old , mem , user_alloc ) ; if ( r ) goto out_free ; if ( npages ) { r = kvm_iommu_map_pages ( kvm , & new ) ; if ( r ) goto out_free ; } r = - ENOMEM ; slots = kzalloc ( sizeof ( struct kvm_memslots ) , GFP_KERNEL ) ; if ( ! slots ) goto out_free ; memcpy ( slots , kvm -> memslots , sizeof ( struct kvm_memslots ) ) ; if ( mem -> slot >= slots -> nmemslots ) slots -> nmemslots = mem -> slot + 1 ; slots -> generation ++ ; if ( ! npages ) { new . rmap = NULL ; new . dirty_bitmap = NULL ; for ( i = 0 ; i < KVM_NR_PAGE_SIZES - 1 ; ++ i ) new . lpage_info [ i ] = NULL ; } slots -> memslots [ mem -> slot ] = new ; old_memslots = kvm -> memslots ; rcu_assign_pointer ( kvm -> memslots , slots ) ; synchronize_srcu_expedited ( & kvm -> srcu ) ; kvm_arch_commit_memory_region ( kvm , mem , old , user_alloc ) ; kvm_free_physmem_slot ( & old , & new ) ; kfree ( old_memslots ) ; return 0 ; out_free : kvm_free_physmem_slot ( & new , & old ) ; out : return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( user_alloc && ( <S2SV_ModStart> PAGE_SIZE - 1 ) ) || ! access_ok ( VERIFY_WRITE , mem -> userspace_addr , mem -> memory_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3487\n\n```\nCWE-20 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { <S2SV_StartBug> size_t ofs = CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ; <S2SV_EndBug> q = ( const uint8_t * ) ( const void * ) ( ( const char * ) ( const void * ) p + ofs - 2 * sizeof ( uint32_t ) ) ; if ( q > e ) { DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%\" SIZE_T_FORMAT \"u)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=0x%tx,0x%x\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , offs ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; if ( nelements == 0 ) { DPRINTF ( ( \"CDF_VECTOR<S2SV_blank>with<S2SV_blank>nelements<S2SV_blank>==<S2SV_blank>0\\\\n\" ) ) ; goto out ; } o = 2 ; } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_FLOAT : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; u32 = CDF_TOLE4 ( u32 ) ; memcpy ( & inp [ i ] . pi_f , & u32 , sizeof ( inp [ i ] . pi_f ) ) ; break ; case CDF_DOUBLE : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; memcpy ( & inp [ i ] . pi_d , & u64 , sizeof ( inp [ i ] . pi_d ) ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , nelements ) ) ; for ( j = 0 ; j < nelements && i < sh . sh_properties ; j ++ , i ++ ) { uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; if ( l & 1 ) l ++ ; o += l >> 1 ; if ( q + o >= e ) goto out ; o4 = o * sizeof ( uint32_t ) ; } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; break ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { size_t tail = <S2SV_ModEnd> ( i << <S2SV_ModStart> ) + 1 ; if ( cdf_check_stream_offset ( sst , h , p , tail * sizeof ( uint32_t ) , __LINE__ ) == - 1 ) goto out ; size_t ofs = CDF_GETUINT32 ( p , tail\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static int raw_sendmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipcm_cookie ipc ; struct rtable * rt = NULL ; int free = 0 ; __be32 daddr ; __be32 saddr ; u8 tos ; int err ; <S2SV_StartBug> err = - EMSGSIZE ; <S2SV_EndBug> if ( len > 0xFFFF ) goto out ; err = - EOPNOTSUPP ; if ( msg -> msg_flags & MSG_OOB ) goto out ; if ( msg -> msg_namelen ) { struct sockaddr_in * usin = ( struct sockaddr_in * ) msg -> msg_name ; err = - EINVAL ; if ( msg -> msg_namelen < sizeof ( * usin ) ) goto out ; if ( usin -> sin_family != AF_INET ) { static int complained ; if ( ! complained ++ ) printk ( KERN_INFO \"%s<S2SV_blank>forgot<S2SV_blank>to<S2SV_blank>set<S2SV_blank>AF_INET<S2SV_blank>in<S2SV_blank>\" \"raw<S2SV_blank>sendmsg.<S2SV_blank>Fix<S2SV_blank>it!\\\\n\" , current -> comm ) ; err = - EAFNOSUPPORT ; if ( usin -> sin_family ) goto out ; } daddr = usin -> sin_addr . s_addr ; } else { err = - EDESTADDRREQ ; if ( sk -> sk_state != TCP_ESTABLISHED ) goto out ; daddr = inet -> inet_daddr ; } ipc . addr = inet -> inet_saddr ; ipc . opt = NULL ; ipc . tx_flags = 0 ; ipc . oif = sk -> sk_bound_dev_if ; if ( msg -> msg_controllen ) { err = ip_cmsg_send ( sock_net ( sk ) , msg , & ipc ) ; if ( err ) goto out ; if ( ipc . opt ) free = 1 ; } saddr = ipc . addr ; ipc . addr = daddr ; if ( ! ipc . opt ) <S2SV_StartBug> ipc . opt = inet -> opt ; <S2SV_EndBug> if ( ipc . opt ) { err = - EINVAL ; if ( inet -> hdrincl ) goto done ; <S2SV_StartBug> if ( ipc . opt -> srr ) { <S2SV_EndBug> if ( ! daddr ) goto done ; <S2SV_StartBug> daddr = ipc . opt -> faddr ; <S2SV_EndBug> } } tos = RT_CONN_FLAGS ( sk ) ; if ( msg -> msg_flags & MSG_DONTROUTE ) tos |= RTO_ONLINK ; if ( ipv4_is_multicast ( daddr ) ) { if ( ! ipc . oif ) ipc . oif = inet -> mc_index ; if ( ! saddr ) saddr = inet -> mc_addr ; } { struct flowi4 fl4 ; flowi4_init_output ( & fl4 , ipc . oif , sk -> sk_mark , tos , RT_SCOPE_UNIVERSE , inet -> hdrincl ? IPPROTO_RAW : sk -> sk_protocol , FLOWI_FLAG_CAN_SLEEP , daddr , saddr , 0 , 0 ) ; if ( ! inet -> hdrincl ) { err = raw_probe_proto_opt ( & fl4 , msg ) ; if ( err ) goto done ; } security_sk_classify_flow ( sk , flowi4_to_flowi ( & fl4 ) ) ; rt = ip_route_output_flow ( sock_net ( sk ) , & fl4 , sk ) ; if ( IS_ERR ( rt ) ) { err = PTR_ERR ( rt ) ; rt = NULL ; goto done ; } } err = - EACCES ; if ( rt -> rt_flags & RTCF_BROADCAST && ! sock_flag ( sk , SOCK_BROADCAST ) ) goto done ; if ( msg -> msg_flags & MSG_CONFIRM ) goto do_confirm ; back_from_confirm : if ( inet -> hdrincl ) err = raw_send_hdrinc ( sk , msg -> msg_iov , len , & rt , msg -> msg_flags ) ; else { if ( ! ipc . addr ) ipc . addr = rt -> rt_dst ; lock_sock ( sk ) ; err = ip_append_data ( sk , ip_generic_getfrag , msg -> msg_iov , len , 0 , & ipc , & rt , msg -> msg_flags ) ; if ( err ) ip_flush_pending_frames ( sk ) ; else if ( ! ( msg -> msg_flags & MSG_MORE ) ) { err = ip_push_pending_frames ( sk ) ; if ( err == - ENOBUFS && ! inet -> recverr ) err = 0 ; } release_sock ( sk ) ; } done : if ( free ) kfree ( ipc . opt ) ; ip_rt_put ( rt ) ; out : if ( err < 0 ) return err ; return len ; do_confirm : dst_confirm ( & rt -> dst ) ; if ( ! ( msg -> msg_flags & MSG_PROBE ) || len ) goto back_from_confirm ; err = 0 ; goto done ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int err ; struct ip_options_data opt_copy ; <S2SV_ModStart> . opt ) { struct ip_options_rcu * inet_opt ; rcu_read_lock ( ) ; inet_opt = rcu_dereference ( inet -> inet_opt ) ; if ( inet_opt ) { memcpy ( & opt_copy , inet_opt , sizeof ( * inet_opt ) + inet_opt -> opt . optlen ) ; ipc . opt = & opt_copy . opt ; } rcu_read_unlock ( ) ; } <S2SV_ModEnd> if ( ipc <S2SV_ModStart> . opt -> opt . <S2SV_ModStart> . opt -> opt .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 const vpx_image_t * vpx_codec_get_preview_frame ( vpx_codec_ctx_t * ctx ) { vpx_image_t * img = NULL ; if ( ctx ) { if ( ! ctx -> iface || ! ctx -> priv ) ctx -> err = VPX_CODEC_ERROR ; else if ( ! ( ctx -> iface -> caps & VPX_CODEC_CAP_ENCODER ) ) ctx -> err = VPX_CODEC_INCAPABLE ; else if ( ! ctx -> iface -> enc . get_preview ) ctx -> err = VPX_CODEC_INCAPABLE ; else <S2SV_StartBug> img = ctx -> iface -> enc . get_preview ( ctx -> priv -> alg_priv ) ; <S2SV_EndBug> } return img ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . get_preview ( get_alg_priv ( ctx ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2925\n\n```\nCWE-254 <S2SV_StartBug> static void follow_dotdot ( struct nameidata * nd ) <S2SV_EndBug> { if ( ! nd -> root . mnt ) set_root ( nd ) ; while ( 1 ) { struct dentry * old = nd -> path . dentry ; if ( nd -> path . dentry == nd -> root . dentry && nd -> path . mnt == nd -> root . mnt ) { break ; } if ( nd -> path . dentry != nd -> path . mnt -> mnt_root ) { nd -> path . dentry = dget_parent ( nd -> path . dentry ) ; dput ( old ) ; <S2SV_StartBug> break ; <S2SV_EndBug> } if ( ! follow_up ( & nd -> path ) ) break ; } follow_mount ( & nd -> path ) ; nd -> inode = nd -> path . dentry -> d_inode ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> follow_dotdot ( struct <S2SV_ModStart> old ) ; if ( unlikely ( ! path_connected ( & nd -> path ) ) ) return - ENOENT ; <S2SV_ModStart> -> d_inode ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0313\n\n```\nCWE-000 int evm_update_evmxattr ( struct dentry * dentry , const char * xattr_name , const char * xattr_value , size_t xattr_value_len ) { struct inode * inode = dentry -> d_inode ; struct evm_ima_xattr_data xattr_data ; int rc = 0 ; rc = evm_calc_hmac ( dentry , xattr_name , xattr_value , xattr_value_len , xattr_data . digest ) ; if ( rc == 0 ) { xattr_data . type = EVM_XATTR_HMAC ; rc = __vfs_setxattr_noperm ( dentry , XATTR_NAME_EVM , & xattr_data , sizeof ( xattr_data ) , 0 ) ; } <S2SV_StartBug> else if ( rc == - ENODATA ) <S2SV_EndBug> rc = inode -> i_op -> removexattr ( dentry , XATTR_NAME_EVM ) ; <S2SV_StartBug> return rc ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == - ENODATA && inode -> i_op -> removexattr ) { <S2SV_ModEnd> rc = inode <S2SV_ModStart> XATTR_NAME_EVM ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9628\n\n```\nCWE-120 static int MP4_ReadBox_String ( stream_t * p_stream , MP4_Box_t * p_box ) { <S2SV_StartBug> MP4_READBOX_ENTER ( MP4_Box_data_string_t ) ; <S2SV_EndBug> p_box -> data . p_string -> psz_text = malloc ( p_box -> i_size + 1 - 8 ) ; if ( p_box -> data . p_string -> psz_text == NULL ) MP4_READBOX_EXIT ( 0 ) ; memcpy ( p_box -> data . p_string -> psz_text , p_peek , p_box -> i_size - 8 ) ; p_box -> data . p_string -> psz_text [ p_box -> i_size - 8 ] = '\\\\0' ; # ifdef MP4_VERBOSE msg_Dbg ( p_stream , \"read<S2SV_blank>box:<S2SV_blank>\\\\\"%4.4s\\\\\"<S2SV_blank>text=`%s\\'\" , ( char * ) & p_box -> i_type , p_box -> data . p_string -> psz_text ) ; # endif MP4_READBOX_EXIT ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MP4_READBOX_ENTER ( MP4_Box_data_string_t ) ; if ( p_box -> i_size < 8 || p_box -> i_size > SIZE_MAX ) MP4_READBOX_EXIT ( 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 static int su3000_i2c_transfer ( struct i2c_adapter * adap , struct i2c_msg msg [ ] , int num ) { struct dvb_usb_device * d = i2c_get_adapdata ( adap ) ; <S2SV_StartBug> u8 obuf [ 0x40 ] , ibuf [ 0x40 ] ; <S2SV_EndBug> if ( ! d ) return - ENODEV ; <S2SV_StartBug> if ( mutex_lock_interruptible ( & d -> i2c_mutex ) < 0 ) <S2SV_EndBug> return - EAGAIN ; <S2SV_StartBug> switch ( num ) { <S2SV_EndBug> case 1 : switch ( msg [ 0 ] . addr ) { case SU3000_STREAM_CTRL : <S2SV_StartBug> obuf [ 0 ] = msg [ 0 ] . buf [ 0 ] + 0x36 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 3 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 0 , 0 ) < 0 ) <S2SV_EndBug> err ( \"i2c<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; break ; case DW2102_RC_QUERY : <S2SV_StartBug> obuf [ 0 ] = 0x10 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 1 , ibuf , 2 , 0 ) < 0 ) <S2SV_EndBug> err ( \"i2c<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> msg [ 0 ] . buf [ 1 ] = ibuf [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> msg [ 0 ] . buf [ 0 ] = ibuf [ 1 ] ; <S2SV_EndBug> break ; default : <S2SV_StartBug> obuf [ 0 ] = 0x08 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = msg [ 0 ] . addr ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = msg [ 0 ] . len ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & obuf [ 3 ] , msg [ 0 ] . buf , msg [ 0 ] . len ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , msg [ 0 ] . len + 3 , <S2SV_EndBug> <S2SV_StartBug> ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"i2c<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; } break ; case 2 : <S2SV_StartBug> obuf [ 0 ] = 0x09 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = msg [ 0 ] . len ; <S2SV_EndBug> obuf [ 2 ] = msg [ 1 ] . len ; <S2SV_StartBug> obuf [ 3 ] = msg [ 0 ] . addr ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & obuf [ 4 ] , msg [ 0 ] . buf , msg [ 0 ] . len ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , msg [ 0 ] . len + 4 , <S2SV_EndBug> <S2SV_StartBug> ibuf , msg [ 1 ] . len + 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"i2c<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> memcpy ( msg [ 1 ] . buf , & ibuf [ 1 ] , msg [ 1 ] . len ) ; <S2SV_EndBug> break ; default : warn ( \"more<S2SV_blank>than<S2SV_blank>2<S2SV_blank>i2c<S2SV_blank>messages<S2SV_blank>at<S2SV_blank>a<S2SV_blank>time<S2SV_blank>is<S2SV_blank>not<S2SV_blank>handled<S2SV_blank>yet.\" ) ; break ; } <S2SV_StartBug> mutex_unlock ( & d -> i2c_mutex ) ; <S2SV_EndBug> return num ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> adap ) ; struct dw2102_state * state <S2SV_ModEnd> ; if ( <S2SV_ModStart> - ENODEV ; state = d -> priv ; <S2SV_ModStart> - EAGAIN ; if ( mutex_lock_interruptible ( & d -> data_mutex ) < 0 ) { mutex_unlock ( & d -> i2c_mutex ) ; return - EAGAIN ; } <S2SV_ModStart> case SU3000_STREAM_CTRL : state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> + 0x36 ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 3 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 0 , <S2SV_ModStart> case DW2102_RC_QUERY : state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> ( d , state -> data , 1 , state -> data <S2SV_ModEnd> , 2 , <S2SV_ModStart> 1 ] = state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> 0 ] = state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> ; default : state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0x08 ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> . addr ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> memcpy ( & state -> data <S2SV_ModEnd> [ 3 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , msg [ <S2SV_ModStart> + 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> case 2 : state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0x09 ; state -> data [ 1 ] = msg [ 0 ] . len ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> . len ; state -> data <S2SV_ModEnd> [ 3 ] <S2SV_ModStart> memcpy ( & state -> data <S2SV_ModEnd> [ 4 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , msg [ <S2SV_ModStart> + 4 , state -> data <S2SV_ModEnd> , msg [ <S2SV_ModStart> buf , & state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> & d -> data_mutex ) ; mutex_unlock ( & d ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3520\n\n```\nCWE-287 static int unix_dgram_sendmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct sock * sk = sock -> sk ; struct net * net = sock_net ( sk ) ; struct unix_sock * u = unix_sk ( sk ) ; struct sockaddr_un * sunaddr = msg -> msg_name ; struct sock * other = NULL ; int namelen = 0 ; int err ; unsigned int hash ; struct sk_buff * skb ; long timeo ; struct scm_cookie tmp_scm ; int max_level ; int data_len = 0 ; if ( NULL == siocb -> scm ) siocb -> scm = & tmp_scm ; wait_for_unix_gc ( ) ; <S2SV_StartBug> err = scm_send ( sock , msg , siocb -> scm ) ; <S2SV_EndBug> if ( err < 0 ) return err ; err = - EOPNOTSUPP ; if ( msg -> msg_flags & MSG_OOB ) goto out ; if ( msg -> msg_namelen ) { err = unix_mkname ( sunaddr , msg -> msg_namelen , & hash ) ; if ( err < 0 ) goto out ; namelen = err ; } else { sunaddr = NULL ; err = - ENOTCONN ; other = unix_peer_get ( sk ) ; if ( ! other ) goto out ; } if ( test_bit ( SOCK_PASSCRED , & sock -> flags ) && ! u -> addr && ( err = unix_autobind ( sock ) ) != 0 ) goto out ; err = - EMSGSIZE ; if ( len > sk -> sk_sndbuf - 32 ) goto out ; if ( len > SKB_MAX_ALLOC ) data_len = min_t ( size_t , len - SKB_MAX_ALLOC , MAX_SKB_FRAGS * PAGE_SIZE ) ; skb = sock_alloc_send_pskb ( sk , len - data_len , data_len , msg -> msg_flags & MSG_DONTWAIT , & err ) ; if ( skb == NULL ) goto out ; err = unix_scm_to_skb ( siocb -> scm , skb , true ) ; if ( err < 0 ) goto out_free ; max_level = err + 1 ; unix_get_secdata ( siocb -> scm , skb ) ; skb_put ( skb , len - data_len ) ; skb -> data_len = data_len ; skb -> len = len ; err = skb_copy_datagram_from_iovec ( skb , 0 , msg -> msg_iov , 0 , len ) ; if ( err ) goto out_free ; timeo = sock_sndtimeo ( sk , msg -> msg_flags & MSG_DONTWAIT ) ; restart : if ( ! other ) { err = - ECONNRESET ; if ( sunaddr == NULL ) goto out_free ; other = unix_find_other ( net , sunaddr , namelen , sk -> sk_type , hash , & err ) ; if ( other == NULL ) goto out_free ; } if ( sk_filter ( other , skb ) < 0 ) { err = len ; goto out_free ; } unix_state_lock ( other ) ; err = - EPERM ; if ( ! unix_may_send ( sk , other ) ) goto out_unlock ; if ( sock_flag ( other , SOCK_DEAD ) ) { unix_state_unlock ( other ) ; sock_put ( other ) ; err = 0 ; unix_state_lock ( sk ) ; if ( unix_peer ( sk ) == other ) { unix_peer ( sk ) = NULL ; unix_state_unlock ( sk ) ; unix_dgram_disconnected ( sk , other ) ; sock_put ( other ) ; err = - ECONNREFUSED ; } else { unix_state_unlock ( sk ) ; } other = NULL ; if ( err ) goto out_free ; goto restart ; } err = - EPIPE ; if ( other -> sk_shutdown & RCV_SHUTDOWN ) goto out_unlock ; if ( sk -> sk_type != SOCK_SEQPACKET ) { err = security_unix_may_send ( sk -> sk_socket , other -> sk_socket ) ; if ( err ) goto out_unlock ; } if ( unix_peer ( other ) != sk && unix_recvq_full ( other ) ) { if ( ! timeo ) { err = - EAGAIN ; goto out_unlock ; } timeo = unix_wait_for_peer ( other , timeo ) ; err = sock_intr_errno ( timeo ) ; if ( signal_pending ( current ) ) goto out_free ; goto restart ; } if ( sock_flag ( other , SOCK_RCVTSTAMP ) ) __net_timestamp ( skb ) ; maybe_add_creds ( skb , sock , other ) ; skb_queue_tail ( & other -> sk_receive_queue , skb ) ; if ( max_level > unix_sk ( other ) -> recursion_level ) unix_sk ( other ) -> recursion_level = max_level ; unix_state_unlock ( other ) ; other -> sk_data_ready ( other , len ) ; sock_put ( other ) ; scm_destroy ( siocb -> scm ) ; return len ; out_unlock : unix_state_unlock ( other ) ; out_free : kfree_skb ( skb ) ; out : if ( other ) sock_put ( other ) ; scm_destroy ( siocb -> scm ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> siocb -> scm , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17351\n\n```\nCWE-400 static void balloon_process ( struct work_struct * work ) { enum bp_state state = BP_DONE ; long credit ; do { mutex_lock ( & balloon_mutex ) ; credit = current_credit ( ) ; if ( credit > 0 ) { if ( balloon_is_inflated ( ) ) state = increase_reservation ( credit ) ; else state = reserve_additional_memory ( ) ; } <S2SV_StartBug> if ( credit < 0 ) <S2SV_EndBug> <S2SV_StartBug> state = decrease_reservation ( - credit , GFP_BALLOON ) ; <S2SV_EndBug> state = update_schedule ( state ) ; mutex_unlock ( & balloon_mutex ) ; cond_resched ( ) ; } while ( credit && state == BP_DONE ) ; if ( state == BP_EAGAIN ) schedule_delayed_work ( & balloon_worker , balloon_stats . schedule_delay * HZ ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) { long n_pages ; n_pages = min ( - credit , si_mem_available ( ) ) ; <S2SV_ModStart> = decrease_reservation ( n_pages <S2SV_ModEnd> , GFP_BALLOON ) <S2SV_ModStart> GFP_BALLOON ) ; if ( state == BP_DONE && n_pages != - credit && n_pages < totalreserve_pages ) state = BP_EAGAIN ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-502(不安全的反序列化)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7124\n\n```\nCWE-502 static int php_var_unserialize_internal ( UNSERIALIZE_PARAMETER ) { const unsigned char * cursor , * limit , * marker , * start ; zval * rval_ref ; limit = max ; cursor = * p ; if ( YYCURSOR >= YYLIMIT ) { return 0 ; } if ( var_hash && ( * p ) [ 0 ] != 'R' ) { var_push ( var_hash , rval ) ; } start = cursor ; # line 554 \"ext/standard/var_unserializer.c\" { YYCTYPE yych ; static const unsigned char yybm [ ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , } ; if ( ( YYLIMIT - YYCURSOR ) < 7 ) YYFILL ( 7 ) ; yych = * YYCURSOR ; switch ( yych ) { case 'C' : case 'O' : goto yy13 ; case 'N' : goto yy5 ; case 'R' : goto yy2 ; case 'S' : goto yy10 ; case 'a' : goto yy11 ; case 'b' : goto yy6 ; case 'd' : goto yy8 ; case 'i' : goto yy7 ; case 'o' : goto yy12 ; case 'r' : goto yy4 ; case 's' : goto yy9 ; case '}' : goto yy14 ; default : goto yy16 ; } yy2 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy95 ; yy3 : # line 884 \"ext/standard/var_unserializer.re\" { return 0 ; } # line 580 \"ext/standard/var_unserializer.c\" yy4 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy89 ; goto yy3 ; yy5 : yych = * ++ YYCURSOR ; if ( yych == ';' ) goto yy87 ; goto yy3 ; yy6 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy83 ; goto yy3 ; yy7 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy77 ; goto yy3 ; yy8 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy53 ; goto yy3 ; yy9 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy46 ; goto yy3 ; yy10 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy39 ; goto yy3 ; yy11 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy32 ; goto yy3 ; yy12 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy25 ; goto yy3 ; yy13 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy17 ; goto yy3 ; yy14 : ++ YYCURSOR ; # line 878 \"ext/standard/var_unserializer.re\" { php_error_docref ( NULL , E_NOTICE , \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>serialized<S2SV_blank>data\" ) ; return 0 ; } # line 629 \"ext/standard/var_unserializer.c\" yy16 : yych = * ++ YYCURSOR ; goto yy3 ; yy17 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych == '+' ) goto yy19 ; yy18 : YYCURSOR = YYMARKER ; goto yy3 ; yy19 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } goto yy18 ; yy20 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } <S2SV_StartBug> if ( yych != ':' ) goto yy18 ; <S2SV_EndBug> yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; # line 733 \"ext/standard/var_unserializer.re\" { size_t len , len2 , len3 , maxlen ; zend_long elements ; char * str ; zend_string * class_name ; zend_class_entry * ce ; int incomplete_class = 0 ; int custom_object = 0 ; zval user_func ; zval retval ; zval args [ 1 ] ; if ( ! var_hash ) return 0 ; if ( * start == 'C' ) { custom_object = 1 ; } len2 = len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len || len == 0 ) { * p = start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ':' ) { * p = YYCURSOR + 1 ; return 0 ; } len3 = strspn ( str , \"0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\\\\177\\\\200\\\\201\\\\202\\\\203\\\\204\\\\205\\\\206\\\\207\\\\210\\\\211\\\\212\\\\213\\\\214\\\\215\\\\216\\\\217\\\\220\\\\221\\\\222\\\\223\\\\224\\\\225\\\\226\\\\227\\\\230\\\\231\\\\232\\\\233\\\\234\\\\235\\\\236\\\\237\\\\240\\\\241\\\\242\\\\243\\\\244\\\\245\\\\246\\\\247\\\\250\\\\251\\\\252\\\\253\\\\254\\\\255\\\\256\\\\257\\\\260\\\\261\\\\262\\\\263\\\\264\\\\265\\\\266\\\\267\\\\270\\\\271\\\\272\\\\273\\\\274\\\\275\\\\276\\\\277\\\\300\\\\301\\\\302\\\\303\\\\304\\\\305\\\\306\\\\307\\\\310\\\\311\\\\312\\\\313\\\\314\\\\315\\\\316\\\\317\\\\320\\\\321\\\\322\\\\323\\\\324\\\\325\\\\326\\\\327\\\\330\\\\331\\\\332\\\\333\\\\334\\\\335\\\\336\\\\337\\\\340\\\\341\\\\342\\\\343\\\\344\\\\345\\\\346\\\\347\\\\350\\\\351\\\\352\\\\353\\\\354\\\\355\\\\356\\\\357\\\\360\\\\361\\\\362\\\\363\\\\364\\\\365\\\\366\\\\367\\\\370\\\\371\\\\372\\\\373\\\\374\\\\375\\\\376\\\\377\\\\\\\\\" ) ; if ( len3 != len ) { * p = YYCURSOR + len3 - len ; return 0 ; } class_name = zend_string_init ( str , len , 0 ) ; do { if ( ! unserialize_allowed_class ( class_name , classes ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } BG ( serialize_lock ) ++ ; ce = zend_lookup_class ( class_name ) ; if ( ce ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; return 0 ; } break ; } BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; return 0 ; } if ( ( PG ( unserialize_callback_func ) == NULL ) || ( PG ( unserialize_callback_func ) [ 0 ] == '\\\\0' ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } ZVAL_STRING ( & user_func , PG ( unserialize_callback_func ) ) ; ZVAL_STR_COPY ( & args [ 0 ] , class_name ) ; BG ( serialize_lock ) ++ ; if ( call_user_function_ex ( CG ( function_table ) , NULL , & user_func , & retval , 1 , args , 0 , NULL ) != SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; return 0 ; } php_error_docref ( NULL , E_WARNING , \"defined<S2SV_blank>(%s)<S2SV_blank>but<S2SV_blank>not<S2SV_blank>found\" , Z_STRVAL ( user_func ) ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; break ; } BG ( serialize_lock ) -- ; zval_ptr_dtor ( & retval ) ; if ( EG ( exception ) ) { zend_string_release ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; return 0 ; } if ( ( ce = zend_lookup_class ( class_name ) ) == NULL ) { php_error_docref ( NULL , E_WARNING , \"Function<S2SV_blank>%s()<S2SV_blank>hasn\\'t<S2SV_blank>defined<S2SV_blank>the<S2SV_blank>class<S2SV_blank>it<S2SV_blank>was<S2SV_blank>called<S2SV_blank>for\" , Z_STRVAL ( user_func ) ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; } zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & args [ 0 ] ) ; break ; } while ( 1 ) ; * p = YYCURSOR ; if ( custom_object ) { int ret ; ret = object_custom ( UNSERIALIZE_PASSTHRU , ce ) ; if ( ret && incomplete_class ) { php_store_class_name ( rval , ZSTR_VAL ( class_name ) , len2 ) ; } zend_string_release ( class_name ) ; return ret ; } elements = object_common1 ( UNSERIALIZE_PASSTHRU , ce ) ; if ( incomplete_class ) { php_store_class_name ( rval , ZSTR_VAL ( class_name ) , len2 ) ; } zend_string_release ( class_name ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } <S2SV_StartBug> # line 804 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy25 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy26 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; goto yy18 ; } yy26 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy27 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; # line 726 \"ext/standard/var_unserializer.re\" { if ( ! var_hash ) return 0 ; return object_common2 ( UNSERIALIZE_PASSTHRU , object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ) ; } <S2SV_StartBug> # line 836 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy32 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy33 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; goto yy18 ; yy33 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy34 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != '{' ) goto yy18 ; ++ YYCURSOR ; # line 702 \"ext/standard/var_unserializer.re\" { zend_long elements = parse_iv ( start + 2 ) ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; if ( elements < 0 ) { return 0 ; } array_init_size ( rval , elements ) ; if ( elements ) { zend_hash_real_init ( Z_ARRVAL_P ( rval ) , 0 ) ; } if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_ARRVAL_P ( rval ) , elements , 0 ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; } <S2SV_StartBug> # line 881 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy39 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy40 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; goto yy18 ; yy40 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy41 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; # line 668 \"ext/standard/var_unserializer.re\" { size_t len , maxlen ; zend_string * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } if ( ( str = unserialize_str ( & YYCURSOR , len , maxlen ) ) == NULL ) { return 0 ; } if ( * ( YYCURSOR ) != \\'\"\\' ) { zend_string_free ( str ) ; * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { efree ( str ) ; * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; ZVAL_STR ( rval , str ) ; return 1 ; } <S2SV_StartBug> # line 936 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy46 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy47 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; goto yy18 ; yy47 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy48 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; # line 636 \"ext/standard/var_unserializer.re\" { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; ZVAL_STRINGL ( rval , str , len ) ; return 1 ; } <S2SV_StartBug> # line 989 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy53 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych <= ',' ) { if ( yych == '+' ) goto yy57 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy55 ; if ( yych <= '.' ) goto yy60 ; goto yy18 ; } } else { if ( yych <= 'I' ) { if ( yych <= '9' ) goto yy58 ; if ( yych <= 'H' ) goto yy18 ; goto yy56 ; } else { if ( yych != 'N' ) goto yy18 ; } } yych = * ++ YYCURSOR ; if ( yych == 'A' ) goto yy76 ; goto yy18 ; yy55 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych == '.' ) goto yy60 ; goto yy18 ; } else { if ( yych <= '9' ) goto yy58 ; if ( yych != 'I' ) goto yy18 ; } yy56 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy72 ; goto yy18 ; yy57 : yych = * ++ YYCURSOR ; if ( yych == '.' ) goto yy60 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy58 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ':' ) { if ( yych <= '.' ) { if ( yych <= '-' ) goto yy18 ; goto yy70 ; } else { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy58 ; goto yy18 ; } } else { if ( yych <= 'E' ) { if ( yych <= ';' ) goto yy63 ; if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy60 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy61 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy61 ; if ( yych <= ':' ) goto yy18 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy63 : ++ YYCURSOR ; # line 627 \"ext/standard/var_unserializer.re\" { # if SIZEOF_ZEND_LONG == 4 use_double : # endif * p = YYCURSOR ; ZVAL_DOUBLE ( rval , zend_strtod ( ( const char * ) start + 2 , NULL ) ) ; return 1 ; } <S2SV_StartBug> # line 1086 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy65 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy66 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; } yy66 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy69 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy69 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; } yy67 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; if ( yych == ';' ) goto yy63 ; goto yy18 ; yy69 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; yy70 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy70 ; if ( yych <= ':' ) goto yy18 ; goto yy63 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy72 : yych = * ++ YYCURSOR ; if ( yych != 'F' ) goto yy18 ; yy73 : yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 611 \"ext/standard/var_unserializer.re\" { * p = YYCURSOR ; if ( ! strncmp ( ( char * ) start + 2 , \"NAN\" , 3 ) ) { ZVAL_DOUBLE ( rval , php_get_nan ( ) ) ; } else if ( ! strncmp ( ( char * ) start + 2 , \"INF\" , 3 ) ) { ZVAL_DOUBLE ( rval , php_get_inf ( ) ) ; } else if ( ! strncmp ( ( char * ) start + 2 , \"-INF\" , 4 ) ) { ZVAL_DOUBLE ( rval , - php_get_inf ( ) ) ; } else { ZVAL_NULL ( rval ) ; } return 1 ; } <S2SV_StartBug> # line 1161 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy76 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy73 ; goto yy18 ; yy77 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy78 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; goto yy18 ; } yy78 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy79 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 585 \"ext/standard/var_unserializer.re\" { # if SIZEOF_ZEND_LONG == 4 int digits = YYCURSOR - start - 3 ; if ( start [ 2 ] == '-' || start [ 2 ] == '+' ) { digits -- ; } if ( digits >= MAX_LENGTH_OF_LONG - 1 ) { if ( digits == MAX_LENGTH_OF_LONG - 1 ) { int cmp = strncmp ( ( char * ) YYCURSOR - MAX_LENGTH_OF_LONG , long_min_digits , MAX_LENGTH_OF_LONG - 1 ) ; if ( ! ( cmp < 0 || ( cmp == 0 && start [ 2 ] == '-' ) ) ) { goto use_double ; } } else { goto use_double ; } } # endif * p = YYCURSOR ; ZVAL_LONG ( rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1214 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy83 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= '2' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 579 \"ext/standard/var_unserializer.re\" { * p = YYCURSOR ; ZVAL_BOOL ( rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1228 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy87 : ++ YYCURSOR ; # line 573 \"ext/standard/var_unserializer.re\" { * p = YYCURSOR ; ZVAL_NULL ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1237 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy89 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy90 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; goto yy18 ; } yy90 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy91 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 548 \"ext/standard/var_unserializer.re\" { zend_long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || ( rval_ref = var_access ( var_hash , id ) ) == NULL ) { return 0 ; } if ( rval_ref == rval ) { return 0 ; } if ( Z_ISUNDEF_P ( rval_ref ) || ( Z_ISREF_P ( rval_ref ) && Z_ISUNDEF_P ( Z_REFVAL_P ( rval_ref ) ) ) ) { ZVAL_UNDEF ( rval ) ; return 1 ; } ZVAL_COPY ( rval , rval_ref ) ; return 1 ; } <S2SV_StartBug> # line 1285 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy95 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy96 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; goto yy18 ; } yy96 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy97 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; # line 522 \"ext/standard/var_unserializer.re\" { zend_long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || ( rval_ref = var_access ( var_hash , id ) ) == NULL ) { return 0 ; } zval_ptr_dtor ( rval ) ; if ( Z_ISUNDEF_P ( rval_ref ) || ( Z_ISREF_P ( rval_ref ) && Z_ISUNDEF_P ( Z_REFVAL_P ( rval_ref ) ) ) ) { ZVAL_UNDEF ( rval ) ; return 1 ; } if ( Z_ISREF_P ( rval_ref ) ) { ZVAL_COPY ( rval , rval_ref ) ; } else { ZVAL_NEW_REF ( rval_ref , rval_ref ) ; ZVAL_COPY ( rval , rval_ref ) ; } return 1 ; } <S2SV_StartBug> # line 1334 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> } # line 886 \"ext/standard/var_unserializer.re\" return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( yych <= '/' ) goto yy18 ; if ( yych >= ';' <S2SV_ModEnd> ) goto yy18 <S2SV_ModStart> } # line 805 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy25 : <S2SV_ModStart> } # line 837 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy32 : <S2SV_ModStart> } # line 882 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy39 : <S2SV_ModStart> } # line 937 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy46 : <S2SV_ModStart> } # line 990 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy53 : <S2SV_ModStart> } # line 1087 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy65 : <S2SV_ModStart> } # line 1162 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy76 : <S2SV_ModStart> } # line 1215 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy83 : <S2SV_ModStart> } # line 1229 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy87 : <S2SV_ModStart> } # line 1238 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy89 : <S2SV_ModStart> } # line 1286 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy95 : <S2SV_ModStart> } # line 1335 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" } #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2548\n\n```\nCWE-20 static int snd_timer_start_slave ( struct snd_timer_instance * timeri ) { unsigned long flags ; spin_lock_irqsave ( & slave_active_lock , flags ) ; timeri -> flags |= SNDRV_TIMER_IFLG_RUNNING ; <S2SV_StartBug> if ( timeri -> master ) <S2SV_EndBug> list_add_tail ( & timeri -> active_list , & timeri -> master -> slave_active_head ) ; <S2SV_StartBug> spin_unlock_irqrestore ( & slave_active_lock , flags ) ; <S2SV_EndBug> return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> timeri -> master && timeri -> timer ) { spin_lock ( & timeri -> timer -> lock ) ; <S2SV_ModEnd> list_add_tail ( & <S2SV_ModStart> slave_active_head ) ; spin_unlock ( & timeri -> timer -> lock ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 SQLITE_PRIVATE void * sqlite3ArrayAllocate ( sqlite3 * db , void * pArray , int szEntry , int * pnEntry , int * pIdx ) { char * z ; <S2SV_StartBug> int n = * pnEntry ; <S2SV_EndBug> if ( ( n & ( n - 1 ) ) == 0 ) { <S2SV_StartBug> int sz = ( n == 0 ) ? 1 : 2 * n ; <S2SV_EndBug> void * pNew = sqlite3DbRealloc ( db , pArray , sz * szEntry ) ; if ( pNew == 0 ) { * pIdx = - 1 ; return pArray ; } pArray = pNew ; } z = ( char * ) pArray ; memset ( & z [ n * szEntry ] , 0 , szEntry ) ; * pIdx = n ; ++ * pnEntry ; return pArray ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * z ; sqlite3_int64 <S2SV_ModEnd> n = * <S2SV_ModStart> 0 ) { sqlite3_int64 <S2SV_ModEnd> sz = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2744\n\n```\nCWE-000 static struct sk_buff * nf_ct_frag6_reasm ( struct nf_ct_frag6_queue * fq , struct net_device * dev ) { struct sk_buff * fp , * op , * head = fq -> q . fragments ; int payload_len ; fq_kill ( fq ) ; WARN_ON ( head == NULL ) ; WARN_ON ( NFCT_FRAG6_CB ( head ) -> offset != 0 ) ; payload_len = ( ( head -> data - skb_network_header ( head ) ) - sizeof ( struct ipv6hdr ) + fq -> q . len - sizeof ( struct frag_hdr ) ) ; if ( payload_len > IPV6_MAXPLEN ) { pr_debug ( \"payload<S2SV_blank>len<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.\\\\n\" ) ; goto out_oversize ; } if ( skb_cloned ( head ) && pskb_expand_head ( head , 0 , 0 , GFP_ATOMIC ) ) { pr_debug ( \"skb<S2SV_blank>is<S2SV_blank>cloned<S2SV_blank>but<S2SV_blank>can\\'t<S2SV_blank>expand<S2SV_blank>head\" ) ; goto out_oom ; } if ( skb_has_frags ( head ) ) { struct sk_buff * clone ; int i , plen = 0 ; if ( ( clone = alloc_skb ( 0 , GFP_ATOMIC ) ) == NULL ) { pr_debug ( \"Can\\'t<S2SV_blank>alloc<S2SV_blank>skb\\\\n\" ) ; goto out_oom ; } clone -> next = head -> next ; head -> next = clone ; skb_shinfo ( clone ) -> frag_list = skb_shinfo ( head ) -> frag_list ; skb_frag_list_init ( head ) ; for ( i = 0 ; i < skb_shinfo ( head ) -> nr_frags ; i ++ ) plen += skb_shinfo ( head ) -> frags [ i ] . size ; clone -> len = clone -> data_len = head -> data_len - plen ; head -> data_len -= clone -> len ; head -> len -= clone -> len ; clone -> csum = 0 ; clone -> ip_summed = head -> ip_summed ; NFCT_FRAG6_CB ( clone ) -> orig = NULL ; atomic_add ( clone -> truesize , & nf_init_frags . mem ) ; } skb_network_header ( head ) [ fq -> nhoffset ] = skb_transport_header ( head ) [ 0 ] ; memmove ( head -> head + sizeof ( struct frag_hdr ) , head -> head , ( head -> data - head -> head ) - sizeof ( struct frag_hdr ) ) ; head -> mac_header += sizeof ( struct frag_hdr ) ; head -> network_header += sizeof ( struct frag_hdr ) ; skb_shinfo ( head ) -> frag_list = head -> next ; skb_reset_transport_header ( head ) ; skb_push ( head , head -> data - skb_network_header ( head ) ) ; atomic_sub ( head -> truesize , & nf_init_frags . mem ) ; for ( fp = head -> next ; fp ; fp = fp -> next ) { head -> data_len += fp -> len ; head -> len += fp -> len ; if ( head -> ip_summed != fp -> ip_summed ) head -> ip_summed = CHECKSUM_NONE ; else if ( head -> ip_summed == CHECKSUM_COMPLETE ) head -> csum = csum_add ( head -> csum , fp -> csum ) ; head -> truesize += fp -> truesize ; atomic_sub ( fp -> truesize , & nf_init_frags . mem ) ; } head -> next = NULL ; head -> dev = dev ; head -> tstamp = fq -> q . stamp ; ipv6_hdr ( head ) -> payload_len = htons ( payload_len ) ; if ( head -> ip_summed == CHECKSUM_COMPLETE ) head -> csum = csum_partial ( skb_network_header ( head ) , skb_network_header_len ( head ) , head -> csum ) ; fq -> q . fragments = NULL ; fp = skb_shinfo ( head ) -> frag_list ; <S2SV_StartBug> if ( NFCT_FRAG6_CB ( fp ) -> orig == NULL ) <S2SV_EndBug> fp = fp -> next ; op = NFCT_FRAG6_CB ( head ) -> orig ; for ( ; fp ; fp = fp -> next ) { struct sk_buff * orig = NFCT_FRAG6_CB ( fp ) -> orig ; op -> next = orig ; op = orig ; NFCT_FRAG6_CB ( fp ) -> orig = NULL ; } return head ; out_oversize : if ( net_ratelimit ( ) ) printk ( KERN_DEBUG \"nf_ct_frag6_reasm:<S2SV_blank>payload<S2SV_blank>len<S2SV_blank>=<S2SV_blank>%d\\\\n\" , payload_len ) ; goto out_fail ; out_oom : if ( net_ratelimit ( ) ) printk ( KERN_DEBUG \"nf_ct_frag6_reasm:<S2SV_blank>no<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>reassembly\\\\n\" ) ; out_fail : return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( fp &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext4_fill_super ( struct super_block * sb , void * data , int silent ) { char * orig_data = kstrdup ( data , GFP_KERNEL ) ; struct buffer_head * bh ; struct ext4_super_block * es = NULL ; struct ext4_sb_info * sbi ; ext4_fsblk_t block ; ext4_fsblk_t sb_block = get_sb_block ( & data ) ; ext4_fsblk_t logical_sb_block ; unsigned long offset = 0 ; unsigned long journal_devnum = 0 ; unsigned long def_mount_opts ; struct inode * root ; const char * descr ; int ret = - ENOMEM ; int blocksize , clustersize ; unsigned int db_count ; unsigned int i ; int needs_recovery , has_huge_files , has_bigalloc ; __u64 blocks_count ; int err = 0 ; unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO ; ext4_group_t first_not_zeroed ; sbi = kzalloc ( sizeof ( * sbi ) , GFP_KERNEL ) ; if ( ! sbi ) goto out_free_orig ; sbi -> s_blockgroup_lock = kzalloc ( sizeof ( struct blockgroup_lock ) , GFP_KERNEL ) ; if ( ! sbi -> s_blockgroup_lock ) { kfree ( sbi ) ; goto out_free_orig ; } sb -> s_fs_info = sbi ; sbi -> s_sb = sb ; sbi -> s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS ; sbi -> s_sb_block = sb_block ; if ( sb -> s_bdev -> bd_part ) sbi -> s_sectors_written_start = part_stat_read ( sb -> s_bdev -> bd_part , sectors [ 1 ] ) ; strreplace ( sb -> s_id , '/' , '!' ) ; ret = - EINVAL ; blocksize = sb_min_blocksize ( sb , EXT4_MIN_BLOCK_SIZE ) ; if ( ! blocksize ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>blocksize\" ) ; goto out_fail ; } if ( blocksize != EXT4_MIN_BLOCK_SIZE ) { logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE ; offset = do_div ( logical_sb_block , blocksize ) ; } else { logical_sb_block = sb_block ; } if ( ! ( bh = sb_bread_unmovable ( sb , logical_sb_block ) ) ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>superblock\" ) ; goto out_fail ; } es = ( struct ext4_super_block * ) ( bh -> b_data + offset ) ; sbi -> s_es = es ; sb -> s_magic = le16_to_cpu ( es -> s_magic ) ; if ( sb -> s_magic != EXT4_SUPER_MAGIC ) goto cantfind_ext4 ; sbi -> s_kbytes_written = le64_to_cpu ( es -> s_kbytes_written ) ; if ( ext4_has_feature_metadata_csum ( sb ) && ext4_has_feature_gdt_csum ( sb ) ) ext4_warning ( sb , \"metadata_csum<S2SV_blank>and<S2SV_blank>uninit_bg<S2SV_blank>are<S2SV_blank>\" \"redundant<S2SV_blank>flags;<S2SV_blank>please<S2SV_blank>run<S2SV_blank>fsck.\" ) ; if ( ! ext4_verify_csum_type ( sb , es ) ) { ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Found<S2SV_blank>ext4<S2SV_blank>filesystem<S2SV_blank>with<S2SV_blank>\" \"unknown<S2SV_blank>checksum<S2SV_blank>algorithm.\" ) ; silent = 1 ; goto cantfind_ext4 ; } if ( ext4_has_feature_metadata_csum ( sb ) ) { sbi -> s_chksum_driver = crypto_alloc_shash ( \"crc32c\" , 0 , 0 ) ; if ( IS_ERR ( sbi -> s_chksum_driver ) ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>load<S2SV_blank>crc32c<S2SV_blank>driver.\" ) ; ret = PTR_ERR ( sbi -> s_chksum_driver ) ; sbi -> s_chksum_driver = NULL ; goto failed_mount ; } } if ( ! ext4_superblock_csum_verify ( sb , es ) ) { ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Found<S2SV_blank>ext4<S2SV_blank>filesystem<S2SV_blank>with<S2SV_blank>\" \"invalid<S2SV_blank>superblock<S2SV_blank>checksum.<S2SV_blank><S2SV_blank>Run<S2SV_blank>e2fsck?\" ) ; silent = 1 ; ret = - EFSBADCRC ; goto cantfind_ext4 ; } if ( ext4_has_feature_csum_seed ( sb ) ) sbi -> s_csum_seed = le32_to_cpu ( es -> s_checksum_seed ) ; else if ( ext4_has_metadata_csum ( sb ) ) sbi -> s_csum_seed = ext4_chksum ( sbi , ~ 0 , es -> s_uuid , sizeof ( es -> s_uuid ) ) ; def_mount_opts = le32_to_cpu ( es -> s_default_mount_opts ) ; set_opt ( sb , INIT_INODE_TABLE ) ; if ( def_mount_opts & EXT4_DEFM_DEBUG ) set_opt ( sb , DEBUG ) ; if ( def_mount_opts & EXT4_DEFM_BSDGROUPS ) set_opt ( sb , GRPID ) ; if ( def_mount_opts & EXT4_DEFM_UID16 ) set_opt ( sb , NO_UID32 ) ; set_opt ( sb , XATTR_USER ) ; # ifdef CONFIG_EXT4_FS_POSIX_ACL set_opt ( sb , POSIX_ACL ) ; # endif if ( ext4_has_metadata_csum ( sb ) ) set_opt ( sb , JOURNAL_CHECKSUM ) ; if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_DATA ) set_opt ( sb , JOURNAL_DATA ) ; else if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_ORDERED ) set_opt ( sb , ORDERED_DATA ) ; else if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_WBACK ) set_opt ( sb , WRITEBACK_DATA ) ; if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT4_ERRORS_PANIC ) set_opt ( sb , ERRORS_PANIC ) ; else if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT4_ERRORS_CONTINUE ) set_opt ( sb , ERRORS_CONT ) ; else set_opt ( sb , ERRORS_RO ) ; set_opt ( sb , BLOCK_VALIDITY ) ; if ( def_mount_opts & EXT4_DEFM_DISCARD ) set_opt ( sb , DISCARD ) ; sbi -> s_resuid = make_kuid ( & init_user_ns , le16_to_cpu ( es -> s_def_resuid ) ) ; sbi -> s_resgid = make_kgid ( & init_user_ns , le16_to_cpu ( es -> s_def_resgid ) ) ; sbi -> s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ; sbi -> s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME ; sbi -> s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME ; if ( ( def_mount_opts & EXT4_DEFM_NOBARRIER ) == 0 ) set_opt ( sb , BARRIER ) ; if ( ! IS_EXT3_SB ( sb ) && ! IS_EXT2_SB ( sb ) && ( ( def_mount_opts & EXT4_DEFM_NODELALLOC ) == 0 ) ) set_opt ( sb , DELALLOC ) ; sbi -> s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT ; if ( ! parse_options ( ( char * ) sbi -> s_es -> s_mount_opts , sb , & journal_devnum , & journal_ioprio , 0 ) ) { ext4_msg ( sb , KERN_WARNING , \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>options<S2SV_blank>in<S2SV_blank>superblock:<S2SV_blank>%s\" , sbi -> s_es -> s_mount_opts ) ; } sbi -> s_def_mount_opt = sbi -> s_mount_opt ; if ( ! parse_options ( ( char * ) data , sb , & journal_devnum , & journal_ioprio , 0 ) ) goto failed_mount ; if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) { printk_once ( KERN_WARNING \"EXT4-fs:<S2SV_blank>Warning:<S2SV_blank>mounting<S2SV_blank>\" \"with<S2SV_blank>data=journal<S2SV_blank>disables<S2SV_blank>delayed<S2SV_blank>\" \"allocation<S2SV_blank>and<S2SV_blank>O_DIRECT<S2SV_blank>support!\\\\n\" ) ; if ( test_opt2 ( sb , EXPLICIT_DELALLOC ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>delalloc\" ) ; goto failed_mount ; } if ( test_opt ( sb , DIOREAD_NOLOCK ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>dioread_nolock\" ) ; goto failed_mount ; } if ( test_opt ( sb , DAX ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>dax\" ) ; goto failed_mount ; } if ( test_opt ( sb , DELALLOC ) ) clear_opt ( sb , DELALLOC ) ; } else { sb -> s_iflags |= SB_I_CGROUPWB ; } sb -> s_flags = ( sb -> s_flags & ~ MS_POSIXACL ) | ( test_opt ( sb , POSIX_ACL ) ? MS_POSIXACL : 0 ) ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT4_GOOD_OLD_REV && ( ext4_has_compat_features ( sb ) || ext4_has_ro_compat_features ( sb ) || ext4_has_incompat_features ( sb ) ) ) ext4_msg ( sb , KERN_WARNING , \"feature<S2SV_blank>flags<S2SV_blank>set<S2SV_blank>on<S2SV_blank>rev<S2SV_blank>0<S2SV_blank>fs,<S2SV_blank>\" \"running<S2SV_blank>e2fsck<S2SV_blank>is<S2SV_blank>recommended\" ) ; if ( es -> s_creator_os == cpu_to_le32 ( EXT4_OS_HURD ) ) { set_opt2 ( sb , HURD_COMPAT ) ; if ( ext4_has_feature_64bit ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"The<S2SV_blank>Hurd<S2SV_blank>can\\'t<S2SV_blank>support<S2SV_blank>64-bit<S2SV_blank>file<S2SV_blank>systems\" ) ; goto failed_mount ; } } if ( IS_EXT2_SB ( sb ) ) { if ( ext2_feature_set_ok ( sb ) ) ext4_msg ( sb , KERN_INFO , \"mounting<S2SV_blank>ext2<S2SV_blank>file<S2SV_blank>system<S2SV_blank>\" \"using<S2SV_blank>the<S2SV_blank>ext4<S2SV_blank>subsystem\" ) ; else { ext4_msg ( sb , KERN_ERR , \"couldn\\'t<S2SV_blank>mount<S2SV_blank>as<S2SV_blank>ext2<S2SV_blank>due<S2SV_blank>\" \"to<S2SV_blank>feature<S2SV_blank>incompatibilities\" ) ; goto failed_mount ; } } if ( IS_EXT3_SB ( sb ) ) { if ( ext3_feature_set_ok ( sb ) ) ext4_msg ( sb , KERN_INFO , \"mounting<S2SV_blank>ext3<S2SV_blank>file<S2SV_blank>system<S2SV_blank>\" \"using<S2SV_blank>the<S2SV_blank>ext4<S2SV_blank>subsystem\" ) ; else { ext4_msg ( sb , KERN_ERR , \"couldn\\'t<S2SV_blank>mount<S2SV_blank>as<S2SV_blank>ext3<S2SV_blank>due<S2SV_blank>\" \"to<S2SV_blank>feature<S2SV_blank>incompatibilities\" ) ; goto failed_mount ; } } if ( ! ext4_feature_set_ok ( sb , ( sb -> s_flags & MS_RDONLY ) ) ) goto failed_mount ; blocksize = BLOCK_SIZE << le32_to_cpu ( es -> s_log_block_size ) ; if ( blocksize < EXT4_MIN_BLOCK_SIZE || blocksize > EXT4_MAX_BLOCK_SIZE ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>filesystem<S2SV_blank>blocksize<S2SV_blank>%d\" , blocksize ) ; goto failed_mount ; } if ( sbi -> s_mount_opt & EXT4_MOUNT_DAX ) { if ( blocksize != PAGE_SIZE ) { ext4_msg ( sb , KERN_ERR , \"error:<S2SV_blank>unsupported<S2SV_blank>blocksize<S2SV_blank>for<S2SV_blank>dax\" ) ; goto failed_mount ; } if ( ! sb -> s_bdev -> bd_disk -> fops -> direct_access ) { ext4_msg ( sb , KERN_ERR , \"error:<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>dax\" ) ; goto failed_mount ; } } if ( ext4_has_feature_encrypt ( sb ) && es -> s_encryption_level ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>encryption<S2SV_blank>level<S2SV_blank>%d\" , es -> s_encryption_level ) ; goto failed_mount ; } if ( sb -> s_blocksize != blocksize ) { if ( ! sb_set_blocksize ( sb , blocksize ) ) { ext4_msg ( sb , KERN_ERR , \"bad<S2SV_blank>block<S2SV_blank>size<S2SV_blank>%d\" , blocksize ) ; goto failed_mount ; } brelse ( bh ) ; logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE ; offset = do_div ( logical_sb_block , blocksize ) ; bh = sb_bread_unmovable ( sb , logical_sb_block ) ; if ( ! bh ) { ext4_msg ( sb , KERN_ERR , \"Can\\'t<S2SV_blank>read<S2SV_blank>superblock<S2SV_blank>on<S2SV_blank>2nd<S2SV_blank>try\" ) ; goto failed_mount ; } es = ( struct ext4_super_block * ) ( bh -> b_data + offset ) ; sbi -> s_es = es ; if ( es -> s_magic != cpu_to_le16 ( EXT4_SUPER_MAGIC ) ) { ext4_msg ( sb , KERN_ERR , \"Magic<S2SV_blank>mismatch,<S2SV_blank>very<S2SV_blank>weird!\" ) ; goto failed_mount ; } } has_huge_files = ext4_has_feature_huge_file ( sb ) ; sbi -> s_bitmap_maxbytes = ext4_max_bitmap_size ( sb -> s_blocksize_bits , has_huge_files ) ; sb -> s_maxbytes = ext4_max_size ( sb -> s_blocksize_bits , has_huge_files ) ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT4_GOOD_OLD_REV ) { sbi -> s_inode_size = EXT4_GOOD_OLD_INODE_SIZE ; sbi -> s_first_ino = EXT4_GOOD_OLD_FIRST_INO ; } else { sbi -> s_inode_size = le16_to_cpu ( es -> s_inode_size ) ; sbi -> s_first_ino = le32_to_cpu ( es -> s_first_ino ) ; if ( ( sbi -> s_inode_size < EXT4_GOOD_OLD_INODE_SIZE ) || ( ! is_power_of_2 ( sbi -> s_inode_size ) ) || ( sbi -> s_inode_size > blocksize ) ) { ext4_msg ( sb , KERN_ERR , \"unsupported<S2SV_blank>inode<S2SV_blank>size:<S2SV_blank>%d\" , sbi -> s_inode_size ) ; goto failed_mount ; } if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE ) sb -> s_time_gran = 1 << ( EXT4_EPOCH_BITS - 2 ) ; } sbi -> s_desc_size = le16_to_cpu ( es -> s_desc_size ) ; if ( ext4_has_feature_64bit ( sb ) ) { if ( sbi -> s_desc_size < EXT4_MIN_DESC_SIZE_64BIT || sbi -> s_desc_size > EXT4_MAX_DESC_SIZE || ! is_power_of_2 ( sbi -> s_desc_size ) ) { ext4_msg ( sb , KERN_ERR , \"unsupported<S2SV_blank>descriptor<S2SV_blank>size<S2SV_blank>%lu\" , sbi -> s_desc_size ) ; goto failed_mount ; } } else sbi -> s_desc_size = EXT4_MIN_DESC_SIZE ; sbi -> s_blocks_per_group = le32_to_cpu ( es -> s_blocks_per_group ) ; sbi -> s_inodes_per_group = le32_to_cpu ( es -> s_inodes_per_group ) ; if ( EXT4_INODE_SIZE ( sb ) == 0 || EXT4_INODES_PER_GROUP ( sb ) == 0 ) goto cantfind_ext4 ; sbi -> s_inodes_per_block = blocksize / EXT4_INODE_SIZE ( sb ) ; if ( sbi -> s_inodes_per_block == 0 ) goto cantfind_ext4 ; sbi -> s_itb_per_group = sbi -> s_inodes_per_group / sbi -> s_inodes_per_block ; sbi -> s_desc_per_block = blocksize / EXT4_DESC_SIZE ( sb ) ; sbi -> s_sbh = bh ; sbi -> s_mount_state = le16_to_cpu ( es -> s_state ) ; sbi -> s_addr_per_block_bits = ilog2 ( EXT4_ADDR_PER_BLOCK ( sb ) ) ; sbi -> s_desc_per_block_bits = ilog2 ( EXT4_DESC_PER_BLOCK ( sb ) ) ; for ( i = 0 ; i < 4 ; i ++ ) sbi -> s_hash_seed [ i ] = le32_to_cpu ( es -> s_hash_seed [ i ] ) ; sbi -> s_def_hash_version = es -> s_def_hash_version ; if ( ext4_has_feature_dir_index ( sb ) ) { i = le32_to_cpu ( es -> s_flags ) ; if ( i & EXT2_FLAGS_UNSIGNED_HASH ) sbi -> s_hash_unsigned = 3 ; else if ( ( i & EXT2_FLAGS_SIGNED_HASH ) == 0 ) { # ifdef __CHAR_UNSIGNED__ if ( ! ( sb -> s_flags & MS_RDONLY ) ) es -> s_flags |= cpu_to_le32 ( EXT2_FLAGS_UNSIGNED_HASH ) ; sbi -> s_hash_unsigned = 3 ; # else if ( ! ( sb -> s_flags & MS_RDONLY ) ) es -> s_flags |= cpu_to_le32 ( EXT2_FLAGS_SIGNED_HASH ) ; # endif } } clustersize = BLOCK_SIZE << le32_to_cpu ( es -> s_log_cluster_size ) ; has_bigalloc = ext4_has_feature_bigalloc ( sb ) ; if ( has_bigalloc ) { if ( clustersize < blocksize ) { ext4_msg ( sb , KERN_ERR , \"cluster<S2SV_blank>size<S2SV_blank>(%d)<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>\" \"block<S2SV_blank>size<S2SV_blank>(%d)\" , clustersize , blocksize ) ; goto failed_mount ; } sbi -> s_cluster_bits = le32_to_cpu ( es -> s_log_cluster_size ) - le32_to_cpu ( es -> s_log_block_size ) ; sbi -> s_clusters_per_group = le32_to_cpu ( es -> s_clusters_per_group ) ; if ( sbi -> s_clusters_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#clusters<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_clusters_per_group ) ; goto failed_mount ; } if ( sbi -> s_blocks_per_group != ( sbi -> s_clusters_per_group * ( clustersize / blocksize ) ) ) { ext4_msg ( sb , KERN_ERR , \"blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>(%lu)<S2SV_blank>and<S2SV_blank>\" \"clusters<S2SV_blank>per<S2SV_blank>group<S2SV_blank>(%lu)<S2SV_blank>inconsistent\" , sbi -> s_blocks_per_group , sbi -> s_clusters_per_group ) ; goto failed_mount ; } } else { if ( clustersize != blocksize ) { ext4_warning ( sb , \"fragment/cluster<S2SV_blank>size<S2SV_blank>(%d)<S2SV_blank>!=<S2SV_blank>\" \"block<S2SV_blank>size<S2SV_blank>(%d)\" , clustersize , blocksize ) ; clustersize = blocksize ; } if ( sbi -> s_blocks_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_blocks_per_group ) ; goto failed_mount ; } sbi -> s_clusters_per_group = sbi -> s_blocks_per_group ; sbi -> s_cluster_bits = 0 ; } sbi -> s_cluster_ratio = clustersize / blocksize ; if ( sbi -> s_inodes_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#inodes<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_inodes_per_group ) ; goto failed_mount ; } if ( sbi -> s_blocks_per_group == clustersize << 3 ) set_opt2 ( sb , STD_GROUP_SIZE ) ; err = generic_check_addressable ( sb -> s_blocksize_bits , ext4_blocks_count ( es ) ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"filesystem\" \"<S2SV_blank>too<S2SV_blank>large<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>safely<S2SV_blank>on<S2SV_blank>this<S2SV_blank>system\" ) ; if ( sizeof ( sector_t ) < 8 ) ext4_msg ( sb , KERN_WARNING , \"CONFIG_LBDAF<S2SV_blank>not<S2SV_blank>enabled\" ) ; goto failed_mount ; } if ( EXT4_BLOCKS_PER_GROUP ( sb ) == 0 ) goto cantfind_ext4 ; blocks_count = sb -> s_bdev -> bd_inode -> i_size >> sb -> s_blocksize_bits ; if ( blocks_count && ext4_blocks_count ( es ) > blocks_count ) { ext4_msg ( sb , KERN_WARNING , \"bad<S2SV_blank>geometry:<S2SV_blank>block<S2SV_blank>count<S2SV_blank>%llu<S2SV_blank>\" \"exceeds<S2SV_blank>size<S2SV_blank>of<S2SV_blank>device<S2SV_blank>(%llu<S2SV_blank>blocks)\" , ext4_blocks_count ( es ) , blocks_count ) ; goto failed_mount ; } if ( le32_to_cpu ( es -> s_first_data_block ) >= ext4_blocks_count ( es ) ) { ext4_msg ( sb , KERN_WARNING , \"bad<S2SV_blank>geometry:<S2SV_blank>first<S2SV_blank>data<S2SV_blank>\" \"block<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>beyond<S2SV_blank>end<S2SV_blank>of<S2SV_blank>filesystem<S2SV_blank>(%llu)\" , le32_to_cpu ( es -> s_first_data_block ) , ext4_blocks_count ( es ) ) ; goto failed_mount ; } blocks_count = ( ext4_blocks_count ( es ) - le32_to_cpu ( es -> s_first_data_block ) + EXT4_BLOCKS_PER_GROUP ( sb ) - 1 ) ; do_div ( blocks_count , EXT4_BLOCKS_PER_GROUP ( sb ) ) ; if ( blocks_count > ( ( uint64_t ) 1 << 32 ) - EXT4_DESC_PER_BLOCK ( sb ) ) { ext4_msg ( sb , KERN_WARNING , \"groups<S2SV_blank>count<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%u<S2SV_blank>\" \"(block<S2SV_blank>count<S2SV_blank>%llu,<S2SV_blank>first<S2SV_blank>data<S2SV_blank>block<S2SV_blank>%u,<S2SV_blank>\" \"blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>%lu)\" , sbi -> s_groups_count , ext4_blocks_count ( es ) , le32_to_cpu ( es -> s_first_data_block ) , EXT4_BLOCKS_PER_GROUP ( sb ) ) ; goto failed_mount ; } sbi -> s_groups_count = blocks_count ; sbi -> s_blockfile_groups = min_t ( ext4_group_t , sbi -> s_groups_count , ( EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP ( sb ) ) ) ; db_count = ( sbi -> s_groups_count + EXT4_DESC_PER_BLOCK ( sb ) - 1 ) / EXT4_DESC_PER_BLOCK ( sb ) ; sbi -> s_group_desc = ext4_kvmalloc ( db_count * sizeof ( struct buffer_head * ) , GFP_KERNEL ) ; if ( sbi -> s_group_desc == NULL ) { ext4_msg ( sb , KERN_ERR , \"not<S2SV_blank>enough<S2SV_blank>memory\" ) ; ret = - ENOMEM ; goto failed_mount ; } bgl_lock_init ( sbi -> s_blockgroup_lock ) ; for ( i = 0 ; i < db_count ; i ++ ) { block = descriptor_loc ( sb , logical_sb_block , i ) ; sbi -> s_group_desc [ i ] = sb_bread_unmovable ( sb , block ) ; if ( ! sbi -> s_group_desc [ i ] ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>read<S2SV_blank>group<S2SV_blank>descriptor<S2SV_blank>%d\" , i ) ; db_count = i ; goto failed_mount2 ; } } if ( ! ext4_check_descriptors ( sb , & first_not_zeroed ) ) { ext4_msg ( sb , KERN_ERR , \"group<S2SV_blank>descriptors<S2SV_blank>corrupted!\" ) ; ret = - EFSCORRUPTED ; goto failed_mount2 ; } sbi -> s_gdb_count = db_count ; get_random_bytes ( & sbi -> s_next_generation , sizeof ( u32 ) ) ; spin_lock_init ( & sbi -> s_next_gen_lock ) ; setup_timer ( & sbi -> s_err_report , print_daily_error_info , ( unsigned long ) sb ) ; if ( ext4_es_register_shrinker ( sbi ) ) goto failed_mount3 ; sbi -> s_stripe = ext4_get_stripe_size ( sbi ) ; sbi -> s_extent_max_zeroout_kb = 32 ; sb -> s_op = & ext4_sops ; sb -> s_export_op = & ext4_export_ops ; sb -> s_xattr = ext4_xattr_handlers ; # ifdef CONFIG_QUOTA sb -> dq_op = & ext4_quota_operations ; if ( ext4_has_feature_quota ( sb ) ) sb -> s_qcop = & dquot_quotactl_sysfile_ops ; else sb -> s_qcop = & ext4_qctl_operations ; sb -> s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ ; # endif memcpy ( sb -> s_uuid , es -> s_uuid , sizeof ( es -> s_uuid ) ) ; INIT_LIST_HEAD ( & sbi -> s_orphan ) ; mutex_init ( & sbi -> s_orphan_lock ) ; sb -> s_root = NULL ; needs_recovery = ( es -> s_last_orphan != 0 || ext4_has_feature_journal_needs_recovery ( sb ) ) ; if ( ext4_has_feature_mmp ( sb ) && ! ( sb -> s_flags & MS_RDONLY ) ) if ( ext4_multi_mount_protect ( sb , le64_to_cpu ( es -> s_mmp_block ) ) ) goto failed_mount3a ; if ( ! test_opt ( sb , NOLOAD ) && ext4_has_feature_journal ( sb ) ) { if ( ext4_load_journal ( sb , es , journal_devnum ) ) goto failed_mount3a ; } else if ( test_opt ( sb , NOLOAD ) && ! ( sb -> s_flags & MS_RDONLY ) && ext4_has_feature_journal_needs_recovery ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"required<S2SV_blank>journal<S2SV_blank>recovery<S2SV_blank>\" \"suppressed<S2SV_blank>and<S2SV_blank>not<S2SV_blank>mounted<S2SV_blank>read-only\" ) ; goto failed_mount_wq ; } else { if ( test_opt2 ( sb , EXPLICIT_JOURNAL_CHECKSUM ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"journal_checksum,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } if ( test_opt ( sb , JOURNAL_ASYNC_COMMIT ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"journal_async_commit,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } if ( sbi -> s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"commit=%lu,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" , sbi -> s_commit_interval / HZ ) ; goto failed_mount_wq ; } if ( EXT4_MOUNT_DATA_FLAGS & ( sbi -> s_mount_opt ^ sbi -> s_def_mount_opt ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"data=,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } sbi -> s_def_mount_opt &= EXT4_MOUNT_JOURNAL_CHECKSUM ; clear_opt ( sb , JOURNAL_CHECKSUM ) ; clear_opt ( sb , DATA_FLAGS ) ; sbi -> s_journal = NULL ; needs_recovery = 0 ; goto no_journal ; } if ( ext4_has_feature_64bit ( sb ) && ! jbd2_journal_set_features ( EXT4_SB ( sb ) -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_64BIT ) ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>64-bit<S2SV_blank>journal<S2SV_blank>feature\" ) ; goto failed_mount_wq ; } if ( ! set_journal_csum_feature_set ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>journal<S2SV_blank>checksum<S2SV_blank>\" \"feature<S2SV_blank>set\" ) ; goto failed_mount_wq ; } switch ( test_opt ( sb , DATA_FLAGS ) ) { case 0 : if ( jbd2_journal_check_available_features ( sbi -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_REVOKE ) ) set_opt ( sb , ORDERED_DATA ) ; else set_opt ( sb , JOURNAL_DATA ) ; break ; case EXT4_MOUNT_ORDERED_DATA : case EXT4_MOUNT_WRITEBACK_DATA : if ( ! jbd2_journal_check_available_features ( sbi -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_REVOKE ) ) { ext4_msg ( sb , KERN_ERR , \"Journal<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>\" \"requested<S2SV_blank>data<S2SV_blank>journaling<S2SV_blank>mode\" ) ; goto failed_mount_wq ; } default : break ; } set_task_ioprio ( sbi -> s_journal -> j_task , journal_ioprio ) ; sbi -> s_journal -> j_commit_callback = ext4_journal_commit_callback ; no_journal : if ( ext4_mballoc_ready ) { <S2SV_StartBug> sbi -> s_mb_cache = ext4_xattr_create_cache ( sb -> s_id ) ; <S2SV_EndBug> if ( ! sbi -> s_mb_cache ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>an<S2SV_blank>mb_cache\" ) ; goto failed_mount_wq ; } } if ( ( DUMMY_ENCRYPTION_ENABLED ( sbi ) || ext4_has_feature_encrypt ( sb ) ) && ( blocksize != PAGE_CACHE_SIZE ) ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>blocksize<S2SV_blank>for<S2SV_blank>fs<S2SV_blank>encryption\" ) ; goto failed_mount_wq ; } if ( DUMMY_ENCRYPTION_ENABLED ( sbi ) && ! ( sb -> s_flags & MS_RDONLY ) && ! ext4_has_feature_encrypt ( sb ) ) { ext4_set_feature_encrypt ( sb ) ; ext4_commit_super ( sb , 1 ) ; } if ( es -> s_overhead_clusters ) sbi -> s_overhead = le32_to_cpu ( es -> s_overhead_clusters ) ; else { err = ext4_calculate_overhead ( sb ) ; if ( err ) goto failed_mount_wq ; } EXT4_SB ( sb ) -> rsv_conversion_wq = alloc_workqueue ( \"ext4-rsv-conversion\" , WQ_MEM_RECLAIM | WQ_UNBOUND , 1 ) ; if ( ! EXT4_SB ( sb ) -> rsv_conversion_wq ) { printk ( KERN_ERR \"EXT4-fs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>workqueue\\\\n\" ) ; ret = - ENOMEM ; goto failed_mount4 ; } root = ext4_iget ( sb , EXT4_ROOT_INO ) ; if ( IS_ERR ( root ) ) { ext4_msg ( sb , KERN_ERR , \"get<S2SV_blank>root<S2SV_blank>inode<S2SV_blank>failed\" ) ; ret = PTR_ERR ( root ) ; root = NULL ; goto failed_mount4 ; } if ( ! S_ISDIR ( root -> i_mode ) || ! root -> i_blocks || ! root -> i_size ) { ext4_msg ( sb , KERN_ERR , \"corrupt<S2SV_blank>root<S2SV_blank>inode,<S2SV_blank>run<S2SV_blank>e2fsck\" ) ; iput ( root ) ; goto failed_mount4 ; } sb -> s_root = d_make_root ( root ) ; if ( ! sb -> s_root ) { ext4_msg ( sb , KERN_ERR , \"get<S2SV_blank>root<S2SV_blank>dentry<S2SV_blank>failed\" ) ; ret = - ENOMEM ; goto failed_mount4 ; } if ( ext4_setup_super ( sb , es , sb -> s_flags & MS_RDONLY ) ) sb -> s_flags |= MS_RDONLY ; if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; if ( ext4_has_feature_extra_isize ( sb ) ) { if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_want_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_want_extra_isize ) ; if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_min_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_min_extra_isize ) ; } } if ( EXT4_GOOD_OLD_INODE_SIZE + sbi -> s_want_extra_isize > sbi -> s_inode_size ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; ext4_msg ( sb , KERN_INFO , \"required<S2SV_blank>extra<S2SV_blank>inode<S2SV_blank>space<S2SV_blank>not\" \"available\" ) ; } ext4_set_resv_clusters ( sb ) ; err = ext4_setup_system_zone ( sb ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>system<S2SV_blank>\" \"zone<S2SV_blank>(%d)\" , err ) ; goto failed_mount4a ; } ext4_ext_init ( sb ) ; err = ext4_mb_init ( sb ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>mballoc<S2SV_blank>(%d)\" , err ) ; goto failed_mount5 ; } block = ext4_count_free_clusters ( sb ) ; ext4_free_blocks_count_set ( sbi -> s_es , EXT4_C2B ( sbi , block ) ) ; err = percpu_counter_init ( & sbi -> s_freeclusters_counter , block , GFP_KERNEL ) ; if ( ! err ) { unsigned long freei = ext4_count_free_inodes ( sb ) ; sbi -> s_es -> s_free_inodes_count = cpu_to_le32 ( freei ) ; err = percpu_counter_init ( & sbi -> s_freeinodes_counter , freei , GFP_KERNEL ) ; } if ( ! err ) err = percpu_counter_init ( & sbi -> s_dirs_counter , ext4_count_dirs ( sb ) , GFP_KERNEL ) ; if ( ! err ) err = percpu_counter_init ( & sbi -> s_dirtyclusters_counter , 0 , GFP_KERNEL ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"insufficient<S2SV_blank>memory\" ) ; goto failed_mount6 ; } if ( ext4_has_feature_flex_bg ( sb ) ) if ( ! ext4_fill_flex_info ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>\" \"flex_bg<S2SV_blank>meta<S2SV_blank>info!\" ) ; goto failed_mount6 ; } err = ext4_register_li_request ( sb , first_not_zeroed ) ; if ( err ) goto failed_mount6 ; err = ext4_register_sysfs ( sb ) ; if ( err ) goto failed_mount7 ; # ifdef CONFIG_QUOTA if ( ext4_has_feature_quota ( sb ) && ! ( sb -> s_flags & MS_RDONLY ) ) { err = ext4_enable_quotas ( sb ) ; if ( err ) goto failed_mount8 ; } # endif EXT4_SB ( sb ) -> s_mount_state |= EXT4_ORPHAN_FS ; ext4_orphan_cleanup ( sb , es ) ; EXT4_SB ( sb ) -> s_mount_state &= ~ EXT4_ORPHAN_FS ; if ( needs_recovery ) { ext4_msg ( sb , KERN_INFO , \"recovery<S2SV_blank>complete\" ) ; ext4_mark_recovery_complete ( sb , es ) ; } if ( EXT4_SB ( sb ) -> s_journal ) { if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) descr = \"<S2SV_blank>journalled<S2SV_blank>data<S2SV_blank>mode\" ; else if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_ORDERED_DATA ) descr = \"<S2SV_blank>ordered<S2SV_blank>data<S2SV_blank>mode\" ; else descr = \"<S2SV_blank>writeback<S2SV_blank>data<S2SV_blank>mode\" ; } else descr = \"out<S2SV_blank>journal\" ; if ( test_opt ( sb , DISCARD ) ) { struct request_queue * q = bdev_get_queue ( sb -> s_bdev ) ; if ( ! blk_queue_discard ( q ) ) ext4_msg ( sb , KERN_WARNING , \"mounting<S2SV_blank>with<S2SV_blank>\\\\\"discard\\\\\"<S2SV_blank>option,<S2SV_blank>but<S2SV_blank>\" \"the<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>discard\" ) ; } if ( ___ratelimit ( & ext4_mount_msg_ratelimit , \"EXT4-fs<S2SV_blank>mount\" ) ) ext4_msg ( sb , KERN_INFO , \"mounted<S2SV_blank>filesystem<S2SV_blank>with%s.<S2SV_blank>\" \"Opts:<S2SV_blank>%s%s%s\" , descr , sbi -> s_es -> s_mount_opts , * sbi -> s_es -> s_mount_opts ? \";<S2SV_blank>\" : \"\" , orig_data ) ; if ( es -> s_error_count ) mod_timer ( & sbi -> s_err_report , jiffies + 300 * HZ ) ; ratelimit_state_init ( & sbi -> s_err_ratelimit_state , 5 * HZ , 10 ) ; ratelimit_state_init ( & sbi -> s_warning_ratelimit_state , 5 * HZ , 10 ) ; ratelimit_state_init ( & sbi -> s_msg_ratelimit_state , 5 * HZ , 10 ) ; kfree ( orig_data ) ; return 0 ; cantfind_ext4 : if ( ! silent ) ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Can\\'t<S2SV_blank>find<S2SV_blank>ext4<S2SV_blank>filesystem\" ) ; goto failed_mount ; # ifdef CONFIG_QUOTA failed_mount8 : ext4_unregister_sysfs ( sb ) ; # endif failed_mount7 : ext4_unregister_li_request ( sb ) ; failed_mount6 : ext4_mb_release ( sb ) ; if ( sbi -> s_flex_groups ) kvfree ( sbi -> s_flex_groups ) ; percpu_counter_destroy ( & sbi -> s_freeclusters_counter ) ; percpu_counter_destroy ( & sbi -> s_freeinodes_counter ) ; percpu_counter_destroy ( & sbi -> s_dirs_counter ) ; percpu_counter_destroy ( & sbi -> s_dirtyclusters_counter ) ; failed_mount5 : ext4_ext_release ( sb ) ; ext4_release_system_zone ( sb ) ; failed_mount4a : dput ( sb -> s_root ) ; sb -> s_root = NULL ; failed_mount4 : ext4_msg ( sb , KERN_ERR , \"mount<S2SV_blank>failed\" ) ; if ( EXT4_SB ( sb ) -> rsv_conversion_wq ) destroy_workqueue ( EXT4_SB ( sb ) -> rsv_conversion_wq ) ; <S2SV_StartBug> failed_mount_wq : <S2SV_EndBug> if ( sbi -> s_journal ) { jbd2_journal_destroy ( sbi -> s_journal ) ; sbi -> s_journal = NULL ; } failed_mount3a : ext4_es_unregister_shrinker ( sbi ) ; failed_mount3 : del_timer_sync ( & sbi -> s_err_report ) ; if ( sbi -> s_mmp_tsk ) kthread_stop ( sbi -> s_mmp_tsk ) ; failed_mount2 : for ( i = 0 ; i < db_count ; i ++ ) brelse ( sbi -> s_group_desc [ i ] ) ; kvfree ( sbi -> s_group_desc ) ; failed_mount : if ( sbi -> s_chksum_driver ) crypto_free_shash ( sbi -> s_chksum_driver ) ; # ifdef CONFIG_QUOTA for ( i = 0 ; i < EXT4_MAXQUOTAS ; i ++ ) kfree ( sbi -> s_qf_names [ i ] ) ; # endif ext4_blkdev_remove ( sbi ) ; brelse ( bh ) ; out_fail : sb -> s_fs_info = NULL ; kfree ( sbi -> s_blockgroup_lock ) ; kfree ( sbi ) ; out_free_orig : kfree ( orig_data ) ; return err ? err : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = ext4_xattr_create_cache ( <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; failed_mount_wq : if ( sbi -> s_mb_cache ) { ext4_xattr_destroy_cache ( sbi -> s_mb_cache ) ; sbi -> s_mb_cache = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0549\n\n```\nCWE-000 WORD32 ih264d_parse_sps ( dec_struct_t * ps_dec , dec_bit_stream_t * ps_bitstrm ) { UWORD8 i ; dec_seq_params_t * ps_seq = NULL ; UWORD8 u1_profile_idc , u1_level_idc , u1_seq_parameter_set_id ; UWORD16 i2_max_frm_num ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; UWORD8 u1_frm , uc_constraint_set0_flag , uc_constraint_set1_flag ; UWORD32 u4_temp ; WORD32 pic_height_in_map_units_minus1 = 0 ; UWORD32 u2_pic_wd = 0 ; UWORD32 u2_pic_ht = 0 ; UWORD32 u2_frm_wd_y = 0 ; UWORD32 u2_frm_ht_y = 0 ; UWORD32 u2_frm_wd_uv = 0 ; UWORD32 u2_frm_ht_uv = 0 ; UWORD32 u2_crop_offset_y = 0 ; UWORD32 u2_crop_offset_uv = 0 ; WORD32 ret ; WORD32 i4_i ; UWORD8 u1_frame_cropping_flag , u1_frame_cropping_rect_left_ofst , u1_frame_cropping_rect_right_ofst , u1_frame_cropping_rect_top_ofst , u1_frame_cropping_rect_bottom_ofst ; SWITCHONTRACE ; u1_profile_idc = ih264d_get_bits_h264 ( ps_bitstrm , 8 ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>profile_idc\" , u1_profile_idc ) ; uc_constraint_set0_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; uc_constraint_set1_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; ih264d_get_bit_h264 ( ps_bitstrm ) ; ih264d_get_bits_h264 ( ps_bitstrm , 5 ) ; if ( ( u1_profile_idc != MAIN_PROFILE_IDC ) && ( u1_profile_idc != BASE_PROFILE_IDC ) && ( u1_profile_idc != HIGH_PROFILE_IDC ) ) { if ( ( u1_profile_idc != EXTENDED_PROFILE_IDC ) || ( ( uc_constraint_set1_flag != 1 ) && ( uc_constraint_set0_flag != 1 ) ) ) { return ( ERROR_FEATURE_UNAVAIL ) ; } } u1_level_idc = ih264d_get_bits_h264 ( ps_bitstrm , 8 ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>u4_level_idc\" , u1_level_idc ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp & MASK_ERR_SEQ_SET_ID ) return ERROR_INV_SPS_PPS_T ; u1_seq_parameter_set_id = u4_temp ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>seq_parameter_set_id\" , u1_seq_parameter_set_id ) ; ps_seq = ps_dec -> pv_scratch_sps_pps ; * ps_seq = ps_dec -> ps_sps [ u1_seq_parameter_set_id ] ; if ( NULL == ps_dec -> ps_cur_sps ) ps_dec -> ps_cur_sps = ps_seq ; ps_seq -> u1_profile_idc = u1_profile_idc ; ps_seq -> u1_level_idc = u1_level_idc ; ps_seq -> u1_seq_parameter_set_id = u1_seq_parameter_set_id ; ps_seq -> i4_chroma_format_idc = 1 ; ps_seq -> i4_bit_depth_luma_minus8 = 0 ; ps_seq -> i4_bit_depth_chroma_minus8 = 0 ; ps_seq -> i4_qpprime_y_zero_transform_bypass_flag = 0 ; ps_seq -> i4_seq_scaling_matrix_present_flag = 0 ; if ( u1_profile_idc == HIGH_PROFILE_IDC ) { ps_seq -> i4_chroma_format_idc = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( ps_seq -> i4_chroma_format_idc != 1 ) { return ERROR_INV_SPS_PPS_T ; } ps_seq -> i4_bit_depth_luma_minus8 = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( ps_seq -> i4_bit_depth_luma_minus8 != 0 ) { return ERROR_INV_SPS_PPS_T ; } ps_seq -> i4_bit_depth_chroma_minus8 = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( ps_seq -> i4_bit_depth_chroma_minus8 != 0 ) { return ERROR_INV_SPS_PPS_T ; } ps_seq -> i4_qpprime_y_zero_transform_bypass_flag = ( WORD32 ) ih264d_get_bit_h264 ( ps_bitstrm ) ; if ( ps_seq -> i4_qpprime_y_zero_transform_bypass_flag != 0 ) { return ERROR_INV_SPS_PPS_T ; } ps_seq -> i4_seq_scaling_matrix_present_flag = ( WORD32 ) ih264d_get_bit_h264 ( ps_bitstrm ) ; if ( ps_seq -> i4_seq_scaling_matrix_present_flag ) { for ( i4_i = 0 ; i4_i < 8 ; i4_i ++ ) { ps_seq -> u1_seq_scaling_list_present_flag [ i4_i ] = ih264d_get_bit_h264 ( ps_bitstrm ) ; ps_seq -> u1_use_default_scaling_matrix_flag [ i4_i ] = 0 ; if ( ps_seq -> u1_seq_scaling_list_present_flag [ i4_i ] ) { if ( i4_i < 6 ) { ih264d_scaling_list ( ps_seq -> i2_scalinglist4x4 [ i4_i ] , 16 , & ps_seq -> u1_use_default_scaling_matrix_flag [ i4_i ] , ps_bitstrm ) ; } else { ih264d_scaling_list ( ps_seq -> i2_scalinglist8x8 [ i4_i - 6 ] , 64 , & ps_seq -> u1_use_default_scaling_matrix_flag [ i4_i ] , ps_bitstrm ) ; } } } } } u4_temp = 4 + ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_BITS_IN_FRAME_NUM ) { return ERROR_INV_SPS_PPS_T ; } ps_seq -> u1_bits_in_frm_num = u4_temp ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>log2_max_frame_num_minus4\" , ( ps_seq -> u1_bits_in_frm_num - 4 ) ) ; i2_max_frm_num = ( 1 << ( ps_seq -> u1_bits_in_frm_num ) ) ; ps_seq -> u2_u4_max_pic_num_minus1 = i2_max_frm_num - 1 ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_PIC_ORDER_CNT_TYPE ) { return ERROR_INV_POC_TYPE_T ; } ps_seq -> u1_pic_order_cnt_type = u4_temp ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>pic_order_cnt_type\" , ps_seq -> u1_pic_order_cnt_type ) ; ps_seq -> u1_num_ref_frames_in_pic_order_cnt_cycle = 1 ; if ( ps_seq -> u1_pic_order_cnt_type == 0 ) { u4_temp = 4 + ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_BITS_IN_POC_LSB ) { return ERROR_INV_SPS_PPS_T ; } ps_seq -> u1_log2_max_pic_order_cnt_lsb_minus = u4_temp ; ps_seq -> i4_max_pic_order_cntLsb = ( 1 << u4_temp ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>log2_max_pic_order_cnt_lsb_minus4\" , ( u4_temp - 4 ) ) ; } else if ( ps_seq -> u1_pic_order_cnt_type == 1 ) { ps_seq -> u1_delta_pic_order_always_zero_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>delta_pic_order_always_zero_flag\" , ps_seq -> u1_delta_pic_order_always_zero_flag ) ; ps_seq -> i4_ofst_for_non_ref_pic = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>offset_for_non_ref_pic\" , ps_seq -> i4_ofst_for_non_ref_pic ) ; ps_seq -> i4_ofst_for_top_to_bottom_field = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>offset_for_top_to_bottom_field\" , ps_seq -> i4_ofst_for_top_to_bottom_field ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > 255 ) return ERROR_INV_SPS_PPS_T ; ps_seq -> u1_num_ref_frames_in_pic_order_cnt_cycle = u4_temp ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>num_ref_frames_in_pic_order_cnt_cycle\" , ps_seq -> u1_num_ref_frames_in_pic_order_cnt_cycle ) ; for ( i = 0 ; i < ps_seq -> u1_num_ref_frames_in_pic_order_cnt_cycle ; i ++ ) { ps_seq -> i4_ofst_for_ref_frame [ i ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>offset_for_ref_frame\" , ps_seq -> i4_ofst_for_ref_frame [ i ] ) ; } } u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( ( u4_temp > H264_MAX_REF_PICS ) ) { return ERROR_NUM_REF ; } ps_seq -> u1_num_ref_frames = u4_temp ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>num_ref_frames\" , ps_seq -> u1_num_ref_frames ) ; ps_seq -> u1_gaps_in_frame_num_value_allowed_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>gaps_in_frame_num_value_allowed_flag\" , ps_seq -> u1_gaps_in_frame_num_value_allowed_flag ) ; ps_seq -> u2_frm_wd_in_mbs = 1 + ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>pic_width_in_mbs_minus1\" , ps_seq -> u2_frm_wd_in_mbs - 1 ) ; u2_pic_wd = ( ps_seq -> u2_frm_wd_in_mbs << 4 ) ; pic_height_in_map_units_minus1 = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_seq -> u2_frm_ht_in_mbs = 1 + pic_height_in_map_units_minus1 ; u2_pic_ht = ( ps_seq -> u2_frm_ht_in_mbs << 4 ) ; ps_seq -> u2_max_mb_addr = ( ps_seq -> u2_frm_wd_in_mbs * ps_seq -> u2_frm_ht_in_mbs ) - 1 ; ps_seq -> u2_total_num_of_mbs = ps_seq -> u2_max_mb_addr + 1 ; ps_seq -> u1_level_idc = ih264d_correct_level_idc ( u1_level_idc , ps_seq -> u2_total_num_of_mbs ) ; u1_frm = ih264d_get_bit_h264 ( ps_bitstrm ) ; ps_seq -> u1_frame_mbs_only_flag = u1_frm ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>frame_mbs_only_flag\" , u1_frm ) ; if ( ! u1_frm ) { u2_pic_ht <<= 1 ; ps_seq -> u1_mb_aff_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>mb_adaptive_frame_field_flag\" , ps_seq -> u1_mb_aff_flag ) ; } else ps_seq -> u1_mb_aff_flag = 0 ; ps_seq -> u1_direct_8x8_inference_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>direct_8x8_inference_flag\" , ps_seq -> u1_direct_8x8_inference_flag ) ; u1_frame_cropping_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>frame_cropping_flag\" , u1_frame_cropping_flag ) ; if ( u1_frame_cropping_flag ) { u1_frame_cropping_rect_left_ofst = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>frame_cropping_rect_left_offset\" , u1_frame_cropping_rect_left_ofst ) ; u1_frame_cropping_rect_right_ofst = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>frame_cropping_rect_right_offset\" , u1_frame_cropping_rect_right_ofst ) ; u1_frame_cropping_rect_top_ofst = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>frame_cropping_rect_top_offset\" , u1_frame_cropping_rect_top_ofst ) ; u1_frame_cropping_rect_bottom_ofst = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>frame_cropping_rect_bottom_offset\" , u1_frame_cropping_rect_bottom_ofst ) ; } ps_seq -> u1_vui_parameters_present_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SPS:<S2SV_blank>vui_parameters_present_flag\" , ps_seq -> u1_vui_parameters_present_flag ) ; u2_frm_wd_y = u2_pic_wd + ( UWORD8 ) ( PAD_LEN_Y_H << 1 ) ; if ( 1 == ps_dec -> u4_share_disp_buf ) { if ( ps_dec -> u4_app_disp_width > u2_frm_wd_y ) u2_frm_wd_y = ps_dec -> u4_app_disp_width ; } u2_frm_ht_y = u2_pic_ht + ( UWORD8 ) ( PAD_LEN_Y_V << 2 ) ; u2_frm_wd_uv = u2_pic_wd + ( UWORD8 ) ( PAD_LEN_UV_H << 2 ) ; u2_frm_wd_uv = MAX ( u2_frm_wd_uv , u2_frm_wd_y ) ; u2_frm_ht_uv = ( u2_pic_ht >> 1 ) + ( UWORD8 ) ( PAD_LEN_UV_V << 2 ) ; u2_frm_ht_uv = MAX ( u2_frm_ht_uv , ( u2_frm_ht_y >> 1 ) ) ; { UWORD16 u2_rgt_ofst = 0 ; UWORD16 u2_lft_ofst = 0 ; UWORD16 u2_top_ofst = 0 ; UWORD16 u2_btm_ofst = 0 ; UWORD8 u1_frm_mbs_flag ; UWORD8 u1_vert_mult_factor ; WORD32 i4_cropped_ht , i4_cropped_wd ; if ( u1_frame_cropping_flag ) { u2_rgt_ofst = u1_frame_cropping_rect_right_ofst << 1 ; u2_lft_ofst = u1_frame_cropping_rect_left_ofst << 1 ; u1_frm_mbs_flag = ( 1 == ps_seq -> u1_frame_mbs_only_flag ) ; u1_vert_mult_factor = ( 2 - u1_frm_mbs_flag ) ; u2_btm_ofst = ( u1_frame_cropping_rect_bottom_ofst << u1_vert_mult_factor ) ; u2_top_ofst = ( u1_frame_cropping_rect_top_ofst << u1_vert_mult_factor ) ; } u2_crop_offset_y = ( u2_frm_wd_y * u2_top_ofst ) + ( u2_lft_ofst ) ; u2_crop_offset_uv = ( u2_frm_wd_uv * ( u2_top_ofst >> 1 ) ) + ( u2_lft_ofst >> 1 ) * YUV420SP_FACTOR ; i4_cropped_ht = u2_pic_ht - ( u2_btm_ofst + u2_top_ofst ) ; i4_cropped_wd = u2_pic_wd - ( u2_rgt_ofst + u2_lft_ofst ) ; if ( ( i4_cropped_ht < MB_SIZE ) || ( i4_cropped_wd < MB_SIZE ) ) { return ERROR_INV_SPS_PPS_T ; } if ( ( 3 == ps_dec -> i4_header_decoded ) && ( ps_dec -> u2_pic_wd != u2_pic_wd ) ) { ps_dec -> u1_res_changed = 1 ; return IVD_RES_CHANGED ; } if ( ( 3 == ps_dec -> i4_header_decoded ) && ( ps_dec -> u2_pic_ht != u2_pic_ht ) ) { ps_dec -> u1_res_changed = 1 ; return IVD_RES_CHANGED ; } if ( ( u2_pic_wd > H264_MAX_FRAME_WIDTH ) || ( u2_pic_ht > H264_MAX_FRAME_HEIGHT ) ) { return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED ; } <S2SV_StartBug> ps_dec -> u2_disp_height = i4_cropped_ht ; <S2SV_EndBug> ps_dec -> u2_disp_width = i4_cropped_wd ; } if ( 1 == ps_seq -> u1_vui_parameters_present_flag ) { ret = ih264d_parse_vui_parametres ( & ps_seq -> s_vui , ps_bitstrm ) ; if ( ret != OK ) return ret ; } ps_dec -> u2_pic_wd = u2_pic_wd ; ps_dec -> u2_pic_ht = u2_pic_ht ; ps_dec -> u2_frm_wd_y = u2_frm_wd_y ; ps_dec -> u2_frm_ht_y = u2_frm_ht_y ; ps_dec -> u2_frm_wd_uv = u2_frm_wd_uv ; ps_dec -> u2_frm_ht_uv = u2_frm_ht_uv ; ps_dec -> s_pad_mgr . u1_pad_len_y_v = ( UWORD8 ) ( PAD_LEN_Y_V << ( 1 - u1_frm ) ) ; ps_dec -> s_pad_mgr . u1_pad_len_cr_v = ( UWORD8 ) ( PAD_LEN_UV_V << ( 1 - u1_frm ) ) ; ps_dec -> u2_frm_wd_in_mbs = ps_seq -> u2_frm_wd_in_mbs ; ps_dec -> u2_frm_ht_in_mbs = ps_seq -> u2_frm_ht_in_mbs ; ps_dec -> u2_crop_offset_y = u2_crop_offset_y ; ps_dec -> u2_crop_offset_uv = u2_crop_offset_uv ; if ( ps_bitstrm -> u4_ofst > ps_bitstrm -> u4_max_ofst ) { return ERROR_INV_SPS_PPS_T ; } ps_seq -> u1_is_valid = TRUE ; ps_dec -> ps_sps [ u1_seq_parameter_set_id ] = * ps_seq ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED ; } if ( ( u2_pic_wd << ps_seq -> u1_mb_aff_flag ) > H264_MAX_FRAME_WIDTH ) { return IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void build_inter_predictors ( MACROBLOCKD * xd , int plane , int block , int bw , int bh , int x , int y , int w , int h , int mi_x , int mi_y ) { struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; const MODE_INFO * mi = xd -> mi [ 0 ] ; const int is_compound = has_second_ref ( & mi -> mbmi ) ; <S2SV_StartBug> const InterpKernel * kernel = vp9_get_interp_kernel ( mi -> mbmi . interp_filter ) ; <S2SV_EndBug> int ref ; for ( ref = 0 ; ref < 1 + is_compound ; ++ ref ) { const struct scale_factors * const sf = & xd -> block_refs [ ref ] -> sf ; struct buf_2d * const pre_buf = & pd -> pre [ ref ] ; struct buf_2d * const dst_buf = & pd -> dst ; uint8_t * const dst = dst_buf -> buf + dst_buf -> stride * y + x ; const MV mv = mi -> mbmi . sb_type < BLOCK_8X8 <S2SV_StartBug> ? ( plane == 0 ? mi -> bmi [ block ] . as_mv [ ref ] . as_mv <S2SV_EndBug> : mi_mv_pred_q4 ( mi , ref ) ) : mi -> mbmi . mv [ ref ] . as_mv ; const MV mv_q4 = clamp_mv_to_umv_border_sb ( xd , & mv , bw , bh , pd -> subsampling_x , pd -> subsampling_y ) ; uint8_t * pre ; MV32 scaled_mv ; int xs , ys , subpel_x , subpel_y ; <S2SV_StartBug> if ( vp9_is_scaled ( sf ) ) { <S2SV_EndBug> pre = pre_buf -> buf + scaled_buffer_offset ( x , y , pre_buf -> stride , sf ) ; scaled_mv = vp9_scale_mv ( & mv_q4 , mi_x + x , mi_y + y , sf ) ; xs = sf -> x_step_q4 ; ys = sf -> y_step_q4 ; } else { pre = pre_buf -> buf + ( y * pre_buf -> stride + x ) ; scaled_mv . row = mv_q4 . row ; scaled_mv . col = mv_q4 . col ; xs = ys = 16 ; } subpel_x = scaled_mv . col & SUBPEL_MASK ; subpel_y = scaled_mv . row & SUBPEL_MASK ; pre += ( scaled_mv . row >> SUBPEL_BITS ) * pre_buf -> stride + ( scaled_mv . col >> SUBPEL_BITS ) ; <S2SV_StartBug> inter_predictor ( pre , pre_buf -> stride , dst , dst_buf -> stride , <S2SV_EndBug> <S2SV_StartBug> subpel_x , subpel_y , sf , w , h , ref , kernel , xs , ys ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * kernel = vp9_filter_kernels [ <S2SV_ModEnd> mi -> mbmi <S2SV_ModStart> mbmi . interp_filter ] <S2SV_ModEnd> ; int ref <S2SV_ModStart> < BLOCK_8X8 ? average_split_mvs ( pd , mi , ref , block <S2SV_ModEnd> ) : mi <S2SV_ModStart> , subpel_y ; const int is_scaled = vp9_is_scaled ( sf ) ; if ( is_scaled <S2SV_ModEnd> ) { pre <S2SV_ModStart> SUBPEL_BITS ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { high_inter_predictor ( pre , pre_buf -> stride , dst , dst_buf -> stride , subpel_x , subpel_y , sf , w , h , ref , kernel , xs , ys , xd -> bd ) ; } else { <S2SV_ModStart> ys ) ; } # else inter_predictor ( pre , pre_buf -> stride , dst , dst_buf -> stride , subpel_x , subpel_y , sf , w , h , ref , kernel , xs , ys ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3742\n\n```\nCWE-20 WORD32 ih264d_process_intra_mb ( dec_struct_t * ps_dec , dec_mb_info_t * ps_cur_mb_info , UWORD8 u1_mb_num ) { UWORD8 u1_mb_type = ps_cur_mb_info -> u1_mb_type ; UWORD8 uc_temp = ps_cur_mb_info -> u1_mb_ngbr_availablity ; UWORD8 u1_top_available = BOOLEAN ( uc_temp & TOP_MB_AVAILABLE_MASK ) ; UWORD8 u1_left_available = BOOLEAN ( uc_temp & LEFT_MB_AVAILABLE_MASK ) ; UWORD8 u1_use_top_right_mb = BOOLEAN ( uc_temp & TOP_RIGHT_MB_AVAILABLE_MASK ) ; UWORD8 u1_use_top_left_mb = BOOLEAN ( uc_temp & TOP_LEFT_MB_AVAILABLE_MASK ) ; UWORD8 uc_useTopMB = u1_top_available ; UWORD16 u2_use_left_mb = u1_left_available ; UWORD16 u2_use_left_mb_pack ; UWORD8 * pu1_luma_pred_buffer ; UWORD8 * pu1_luma_rec_buffer ; UWORD8 * puc_top ; mb_neigbour_params_t * ps_left_mb ; mb_neigbour_params_t * ps_top_mb ; mb_neigbour_params_t * ps_top_right_mb ; mb_neigbour_params_t * ps_curmb ; UWORD16 u2_mbx = ps_cur_mb_info -> u2_mbx ; UWORD32 ui_pred_width , ui_rec_width ; WORD16 * pi2_y_coeff ; UWORD8 u1_mbaff , u1_topmb , u1_mb_field_decoding_flag ; UWORD32 u4_num_pmbair ; UWORD16 ui2_luma_csbp = ps_cur_mb_info -> u2_luma_csbp ; UWORD8 * pu1_yleft , * pu1_ytop_left ; UWORD8 * pu1_top_u ; UWORD8 * pu1_uleft ; UWORD8 * pu1_u_top_left ; UWORD8 * pu1_mb_cb_rei1_buffer , * pu1_mb_cr_rei1_buffer ; UWORD32 u4_recwidth_cr ; tfr_ctxt_t * ps_frame_buf = ps_dec -> ps_frame_buf_ip_recon ; UWORD32 u4_luma_dc_only_csbp = 0 ; UWORD32 u4_luma_dc_only_cbp = 0 ; UWORD8 * pu1_prev_intra4x4_pred_mode_data = ( UWORD8 * ) ps_dec -> pv_proc_tu_coeff_data ; u1_mbaff = ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag ; u1_topmb = ps_cur_mb_info -> u1_topmb ; u4_num_pmbair = ( u1_mb_num >> u1_mbaff ) ; u1_mb_field_decoding_flag = ps_cur_mb_info -> u1_mb_field_decodingflag ; ps_curmb = ps_cur_mb_info -> ps_curmb ; ps_top_mb = ps_cur_mb_info -> ps_top_mb ; ps_left_mb = ps_cur_mb_info -> ps_left_mb ; ps_top_right_mb = ps_cur_mb_info -> ps_top_right_mb ; u2_use_left_mb_pack = ( u2_use_left_mb << 8 ) + u2_use_left_mb ; if ( ps_dec -> ps_cur_pps -> u1_constrained_intra_pred_flag ) { UWORD8 u1_left = ( UWORD8 ) u2_use_left_mb ; uc_useTopMB = uc_useTopMB && ( ( ps_top_mb -> u1_mb_type != P_MB ) && ( ps_top_mb -> u1_mb_type != B_MB ) ) ; u2_use_left_mb = u2_use_left_mb && ( ( ps_left_mb -> u1_mb_type != P_MB ) && ( ps_left_mb -> u1_mb_type != B_MB ) ) ; u2_use_left_mb_pack = ( u2_use_left_mb << 8 ) + u2_use_left_mb ; if ( u1_mbaff ) { if ( u1_mb_field_decoding_flag ^ ps_left_mb -> u1_mb_fld ) { u1_left = u1_left && ( ( ( ps_left_mb + 1 ) -> u1_mb_type != P_MB ) && ( ( ps_left_mb + 1 ) -> u1_mb_type != B_MB ) ) ; u2_use_left_mb = u2_use_left_mb && u1_left ; if ( u1_mb_field_decoding_flag ) u2_use_left_mb_pack = ( u1_left << 8 ) + ( u2_use_left_mb_pack & 0xff ) ; else u2_use_left_mb_pack = ( u2_use_left_mb << 8 ) + ( u2_use_left_mb ) ; } } u1_use_top_right_mb = u1_use_top_right_mb && ( ( ps_top_right_mb -> u1_mb_type != P_MB ) && ( ps_top_right_mb -> u1_mb_type != B_MB ) ) ; u1_use_top_left_mb = u1_use_top_left_mb && ( ( ps_cur_mb_info -> u1_topleft_mbtype != P_MB ) && ( ps_cur_mb_info -> u1_topleft_mbtype != B_MB ) ) ; } pu1_luma_pred_buffer = ps_dec -> pu1_y ; pu1_luma_rec_buffer = ps_frame_buf -> pu1_dest_y + ( u4_num_pmbair << 4 ) ; pu1_mb_cb_rei1_buffer = ps_frame_buf -> pu1_dest_u + ( u4_num_pmbair << 3 ) * YUV420SP_FACTOR ; pu1_mb_cr_rei1_buffer = ps_frame_buf -> pu1_dest_v + ( u4_num_pmbair << 3 ) ; ui_pred_width = MB_SIZE ; ui_rec_width = ps_dec -> u2_frm_wd_y << u1_mb_field_decoding_flag ; u4_recwidth_cr = ps_dec -> u2_frm_wd_uv << u1_mb_field_decoding_flag ; if ( u1_mbaff ) { if ( u1_topmb == 0 ) { pu1_luma_rec_buffer += ( u1_mb_field_decoding_flag ? ( ui_rec_width >> 1 ) : ( ui_rec_width << 4 ) ) ; pu1_mb_cb_rei1_buffer += ( u1_mb_field_decoding_flag ? ( u4_recwidth_cr >> 1 ) : ( u4_recwidth_cr << 3 ) ) ; pu1_mb_cr_rei1_buffer += ( u1_mb_field_decoding_flag ? ( u4_recwidth_cr >> 1 ) : ( u4_recwidth_cr << 3 ) ) ; } } if ( ps_dec -> u4_use_intrapred_line_copy == 1 ) { puc_top = ps_dec -> pu1_prev_y_intra_pred_line + ( ps_cur_mb_info -> u2_mbx << 4 ) ; pu1_top_u = ps_dec -> pu1_prev_u_intra_pred_line + ( ps_cur_mb_info -> u2_mbx << 3 ) * YUV420SP_FACTOR ; } else { puc_top = pu1_luma_rec_buffer - ui_rec_width ; pu1_top_u = pu1_mb_cb_rei1_buffer - u4_recwidth_cr ; } pu1_yleft = pu1_luma_rec_buffer - 1 ; pu1_uleft = pu1_mb_cb_rei1_buffer - 1 * YUV420SP_FACTOR ; pu1_ytop_left = puc_top - 1 ; pu1_u_top_left = pu1_top_u - 1 * YUV420SP_FACTOR ; PROFILE_DISABLE_INTRA_PRED ( ) { pu1_prev_intra4x4_pred_mode_data = ( UWORD8 * ) ps_dec -> pv_proc_tu_coeff_data ; if ( u1_mb_type == I_4x4_MB && ps_cur_mb_info -> u1_tran_form8x8 == 0 ) { ps_dec -> pv_proc_tu_coeff_data = ( void * ) ( ( UWORD8 * ) ps_dec -> pv_proc_tu_coeff_data + 32 ) ; } else if ( u1_mb_type == I_4x4_MB && ps_cur_mb_info -> u1_tran_form8x8 == 1 ) { ps_dec -> pv_proc_tu_coeff_data = ( void * ) ( ( UWORD8 * ) ps_dec -> pv_proc_tu_coeff_data + 8 ) ; } } if ( ! ps_cur_mb_info -> u1_tran_form8x8 ) { u4_luma_dc_only_csbp = ih264d_unpack_luma_coeff4x4_mb ( ps_dec , ps_cur_mb_info , 1 ) ; } else { if ( ! ps_dec -> ps_cur_pps -> u1_entropy_coding_mode ) { u4_luma_dc_only_cbp = ih264d_unpack_luma_coeff4x4_mb ( ps_dec , ps_cur_mb_info , 1 ) ; } else { u4_luma_dc_only_cbp = ih264d_unpack_luma_coeff8x8_mb ( ps_dec , ps_cur_mb_info ) ; } } pi2_y_coeff = ps_dec -> pi2_coeff_data ; if ( u1_mb_type != I_4x4_MB ) { UWORD8 u1_intrapred_mode = MB_TYPE_TO_INTRA_16x16_MODE ( u1_mb_type ) ; { UWORD8 u1_packed_modes = ( u1_top_available << 1 ) + u1_left_available ; UWORD8 u1_err_code = ( u1_intrapred_mode & 1 ) ? u1_intrapred_mode : ( u1_intrapred_mode ^ 2 ) ; if ( ( u1_err_code & u1_packed_modes ) ^ u1_err_code ) { u1_intrapred_mode = 0 ; ps_dec -> i4_error_code = ERROR_INTRAPRED ; } } { UWORD8 au1_ngbr_pels [ 33 ] ; if ( u2_use_left_mb ) { WORD32 i ; for ( i = 0 ; i < 16 ; i ++ ) au1_ngbr_pels [ 16 - 1 - i ] = pu1_yleft [ i * ui_rec_width ] ; } else { memset ( au1_ngbr_pels , 0 , 16 ) ; } au1_ngbr_pels [ 16 ] = * pu1_ytop_left ; if ( uc_useTopMB ) { memcpy ( au1_ngbr_pels + 16 + 1 , puc_top , 16 ) ; } else { memset ( au1_ngbr_pels + 16 + 1 , 0 , 16 ) ; } PROFILE_DISABLE_INTRA_PRED ( ) ps_dec -> apf_intra_pred_luma_16x16 [ u1_intrapred_mode ] ( au1_ngbr_pels , pu1_luma_rec_buffer , 1 , ui_rec_width , ( ( uc_useTopMB << 2 ) | u2_use_left_mb ) ) ; } { UWORD32 i ; WORD16 ai2_tmp [ 16 ] ; for ( i = 0 ; i < 16 ; i ++ ) { WORD16 * pi2_level = pi2_y_coeff + ( i << 4 ) ; UWORD8 * pu1_pred_sblk = pu1_luma_rec_buffer + ( ( i & 0x3 ) * BLK_SIZE ) + ( i >> 2 ) * ( ui_rec_width << 2 ) ; PROFILE_DISABLE_IQ_IT_RECON ( ) { if ( CHECKBIT ( ps_cur_mb_info -> u2_luma_csbp , i ) ) { ps_dec -> pf_iquant_itrans_recon_luma_4x4 ( pi2_level , pu1_pred_sblk , pu1_pred_sblk , ui_rec_width , ui_rec_width , gau2_ih264_iquant_scale_4x4 [ ps_cur_mb_info -> u1_qp_rem6 ] , ( UWORD16 * ) ps_dec -> s_high_profile . i2_scalinglist4x4 [ 0 ] , ps_cur_mb_info -> u1_qp_div6 , ai2_tmp , 1 , pi2_level ) ; } else if ( ( CHECKBIT ( u4_luma_dc_only_csbp , i ) ) && pi2_level [ 0 ] != 0 ) { ps_dec -> pf_iquant_itrans_recon_luma_4x4_dc ( pi2_level , pu1_pred_sblk , pu1_pred_sblk , ui_rec_width , ui_rec_width , gau2_ih264_iquant_scale_4x4 [ ps_cur_mb_info -> u1_qp_rem6 ] , ( UWORD16 * ) ps_dec -> s_high_profile . i2_scalinglist4x4 [ 0 ] , ps_cur_mb_info -> u1_qp_div6 , ai2_tmp , 1 , pi2_level ) ; } } } } } else if ( ! ps_cur_mb_info -> u1_tran_form8x8 ) { UWORD8 u1_is_left_sub_block , u1_is_top_sub_block = uc_useTopMB ; UWORD8 u1_sub_blk_x , u1_sub_blk_y , u1_sub_mb_num ; WORD8 i1_top_pred_mode ; WORD8 i1_left_pred_mode ; UWORD8 * pu1_top , * pu1_left , * pu1_top_left , * pu1_top_right ; WORD8 * pi1_cur_pred_mode , * pi1_left_pred_mode , * pc_topPredMode ; UWORD16 ui2_left_pred_buf_width = 0xffff ; WORD8 i1_intra_pred ; UWORD8 * pu1_prev_intra4x4_pred_mode_flag = pu1_prev_intra4x4_pred_mode_data ; UWORD8 * pu1_rem_intra4x4_pred_mode = pu1_prev_intra4x4_pred_mode_data + 16 ; WORD16 * pi2_y_coeff1 ; UWORD8 u1_cur_sub_block ; UWORD16 ui2_top_rt_mask ; pu1_top = puc_top ; ui2_top_rt_mask = ( u1_use_top_right_mb << 3 ) | ( 0x5750 ) ; if ( uc_useTopMB ) ui2_top_rt_mask |= 0x7 ; pi1_cur_pred_mode = ps_cur_mb_info -> ps_curmb -> pi1_intrapredmodes ; pc_topPredMode = ps_cur_mb_info -> ps_top_mb -> pi1_intrapredmodes ; if ( u1_top_available ) { if ( ps_top_mb -> u1_mb_type == I_4x4_MB ) * ( WORD32 * ) pi1_cur_pred_mode = * ( WORD32 * ) pc_topPredMode ; else * ( WORD32 * ) pi1_cur_pred_mode = ( uc_useTopMB ) ? DC_DC_DC_DC : NOT_VALID ; } else * ( WORD32 * ) pi1_cur_pred_mode = NOT_VALID ; pi1_left_pred_mode = ps_dec -> pi1_left_pred_mode ; if ( ! u1_mbaff ) { if ( u1_left_available ) { if ( ps_left_mb -> u1_mb_type != I_4x4_MB ) * ( WORD32 * ) pi1_left_pred_mode = ( u2_use_left_mb_pack ) ? DC_DC_DC_DC : NOT_VALID ; } else { * ( WORD32 * ) pi1_left_pred_mode = NOT_VALID ; } } else { UWORD8 u1_curMbfld = ps_cur_mb_info -> u1_mb_field_decodingflag ; UWORD8 u1_leftMbfld = ps_left_mb -> u1_mb_fld ; if ( u1_curMbfld ^ u1_leftMbfld ) { if ( u1_topmb | ( ( u1_topmb == 0 ) && ( ( ps_curmb - 1 ) -> u1_mb_type != I_4x4_MB ) ) ) { if ( u1_left_available ) { if ( ps_left_mb -> u1_mb_type != I_4x4_MB ) { if ( CHECKBIT ( u2_use_left_mb_pack , 0 ) == 0 ) * ( WORD32 * ) pi1_left_pred_mode = NOT_VALID ; else * ( WORD32 * ) pi1_left_pred_mode = DC_DC_DC_DC ; } } else * ( WORD32 * ) pi1_left_pred_mode = NOT_VALID ; if ( u1_curMbfld ) { if ( u1_left_available ) { if ( ( ps_left_mb + 1 ) -> u1_mb_type != I_4x4_MB ) { if ( u2_use_left_mb_pack >> 8 ) * ( WORD32 * ) ( pi1_left_pred_mode + 4 ) = DC_DC_DC_DC ; else * ( WORD32 * ) ( pi1_left_pred_mode + 4 ) = NOT_VALID ; } } else * ( WORD32 * ) ( pi1_left_pred_mode + 4 ) = NOT_VALID ; pi1_left_pred_mode [ 1 ] = pi1_left_pred_mode [ 2 ] ; pi1_left_pred_mode [ 2 ] = pi1_left_pred_mode [ 4 ] ; pi1_left_pred_mode [ 3 ] = pi1_left_pred_mode [ 6 ] ; * ( WORD32 * ) ( pi1_left_pred_mode + 4 ) = * ( WORD32 * ) pi1_left_pred_mode ; } else { pi1_left_pred_mode [ 7 ] = pi1_left_pred_mode [ 3 ] ; pi1_left_pred_mode [ 6 ] = pi1_left_pred_mode [ 3 ] ; pi1_left_pred_mode [ 5 ] = pi1_left_pred_mode [ 2 ] ; pi1_left_pred_mode [ 4 ] = pi1_left_pred_mode [ 2 ] ; pi1_left_pred_mode [ 3 ] = pi1_left_pred_mode [ 1 ] ; pi1_left_pred_mode [ 2 ] = pi1_left_pred_mode [ 1 ] ; pi1_left_pred_mode [ 1 ] = pi1_left_pred_mode [ 0 ] ; } } pi1_left_pred_mode += ( u1_topmb ) ? 0 : 4 ; } else { pi1_left_pred_mode += ( u1_topmb ) ? 0 : 4 ; if ( u1_left_available ) { if ( ps_left_mb -> u1_mb_type != I_4x4_MB ) * ( WORD32 * ) pi1_left_pred_mode = ( u2_use_left_mb_pack ) ? DC_DC_DC_DC : NOT_VALID ; } else * ( WORD32 * ) pi1_left_pred_mode = NOT_VALID ; } } pi2_y_coeff1 = pi2_y_coeff ; pu1_top_left = pu1_ytop_left ; for ( u1_sub_mb_num = 0 ; u1_sub_mb_num < 16 ; u1_sub_mb_num ++ ) { UWORD8 au1_ngbr_pels [ 13 ] ; u1_sub_blk_x = u1_sub_mb_num & 0x3 ; u1_sub_blk_y = u1_sub_mb_num >> 2 ; i1_top_pred_mode = pi1_cur_pred_mode [ u1_sub_blk_x ] ; i1_left_pred_mode = pi1_left_pred_mode [ u1_sub_blk_y ] ; u1_use_top_right_mb = ( ! ! CHECKBIT ( ui2_top_rt_mask , u1_sub_mb_num ) ) ; if ( u1_sub_blk_x ) u1_is_left_sub_block = 1 ; else u1_is_left_sub_block = ( u1_sub_blk_y < 2 ) ? ( CHECKBIT ( u2_use_left_mb_pack , 0 ) ) : ( u2_use_left_mb_pack >> 8 ) ; if ( u1_sub_blk_y ) u1_is_top_sub_block = 1 ; if ( ps_dec -> u4_use_intrapred_line_copy == 1 ) { if ( u1_sub_blk_y ) pu1_top = pu1_luma_rec_buffer - ui_rec_width ; else pu1_top = puc_top + ( u1_sub_blk_x << 2 ) ; } else { pu1_top = pu1_luma_rec_buffer - ui_rec_width ; } pu1_top_right = pu1_top + 4 ; pu1_top_left = pu1_top - 1 ; pu1_left = pu1_luma_rec_buffer - 1 ; i1_intra_pred = ( ( i1_left_pred_mode < 0 ) | ( i1_top_pred_mode < 0 ) ) ? DC : MIN ( i1_left_pred_mode , i1_top_pred_mode ) ; { UWORD8 u1_packed_modes = ( u1_is_top_sub_block << 1 ) + u1_is_left_sub_block ; UWORD8 * pu1_intra_err_codes = ( UWORD8 * ) gau1_ih264d_intra_pred_err_code ; UWORD8 uc_b2b0 = ( ( u1_sub_mb_num & 4 ) >> 1 ) | ( u1_sub_mb_num & 1 ) ; UWORD8 uc_b3b1 = ( ( u1_sub_mb_num & 8 ) >> 2 ) | ( ( u1_sub_mb_num & 2 ) >> 1 ) ; u1_cur_sub_block = ( uc_b3b1 << 2 ) + uc_b2b0 ; PROFILE_DISABLE_INTRA_PRED ( ) if ( ! pu1_prev_intra4x4_pred_mode_flag [ u1_cur_sub_block ] ) { i1_intra_pred = pu1_rem_intra4x4_pred_mode [ u1_cur_sub_block ] + ( pu1_rem_intra4x4_pred_mode [ u1_cur_sub_block ] >= i1_intra_pred ) ; } <S2SV_StartBug> { <S2SV_EndBug> UWORD8 u1_err_code = pu1_intra_err_codes [ i1_intra_pred ] ; if ( ( u1_err_code & u1_packed_modes ) ^ u1_err_code ) { i1_intra_pred = 0 ; ps_dec -> i4_error_code = ERROR_INTRAPRED ; } } } { if ( u1_is_left_sub_block ) { WORD32 i ; for ( i = 0 ; i < 4 ; i ++ ) au1_ngbr_pels [ 4 - 1 - i ] = pu1_left [ i * ui_rec_width ] ; } else { memset ( au1_ngbr_pels , 0 , 4 ) ; } au1_ngbr_pels [ 4 ] = * pu1_top_left ; if ( u1_is_top_sub_block ) { memcpy ( au1_ngbr_pels + 4 + 1 , pu1_top , 4 ) ; } else { memset ( au1_ngbr_pels + 4 + 1 , 0 , 4 ) ; } if ( u1_use_top_right_mb ) { memcpy ( au1_ngbr_pels + 4 * 2 + 1 , pu1_top_right , 4 ) ; } else if ( u1_is_top_sub_block ) { memset ( au1_ngbr_pels + 4 * 2 + 1 , au1_ngbr_pels [ 4 * 2 ] , 4 ) ; } } PROFILE_DISABLE_INTRA_PRED ( ) ps_dec -> apf_intra_pred_luma_4x4 [ i1_intra_pred ] ( au1_ngbr_pels , pu1_luma_rec_buffer , 1 , ui_rec_width , ( ( u1_is_top_sub_block << 2 ) | u1_is_left_sub_block ) ) ; if ( CHECKBIT ( ui2_luma_csbp , u1_sub_mb_num ) ) { WORD16 ai2_tmp [ 16 ] ; PROFILE_DISABLE_IQ_IT_RECON ( ) { if ( CHECKBIT ( u4_luma_dc_only_csbp , u1_sub_mb_num ) ) { ps_dec -> pf_iquant_itrans_recon_luma_4x4_dc ( pi2_y_coeff1 , pu1_luma_rec_buffer , pu1_luma_rec_buffer , ui_rec_width , ui_rec_width , gau2_ih264_iquant_scale_4x4 [ ps_cur_mb_info -> u1_qp_rem6 ] , ( UWORD16 * ) ps_dec -> s_high_profile . i2_scalinglist4x4 [ 0 ] , ps_cur_mb_info -> u1_qp_div6 , ai2_tmp , 0 , NULL ) ; } else { ps_dec -> pf_iquant_itrans_recon_luma_4x4 ( pi2_y_coeff1 , pu1_luma_rec_buffer , pu1_luma_rec_buffer , ui_rec_width , ui_rec_width , gau2_ih264_iquant_scale_4x4 [ ps_cur_mb_info -> u1_qp_rem6 ] , ( UWORD16 * ) ps_dec -> s_high_profile . i2_scalinglist4x4 [ 0 ] , ps_cur_mb_info -> u1_qp_div6 , ai2_tmp , 0 , NULL ) ; } } } pi2_y_coeff1 += 16 ; pu1_luma_rec_buffer += ( u1_sub_blk_x == 3 ) ? ( ui_rec_width << 2 ) - 12 : 4 ; pu1_luma_pred_buffer += ( u1_sub_blk_x == 3 ) ? ( ui_pred_width << 2 ) - 12 : 4 ; pi1_cur_pred_mode [ u1_sub_blk_x ] = i1_intra_pred ; pi1_left_pred_mode [ u1_sub_blk_y ] = i1_intra_pred ; } } else if ( ( u1_mb_type == I_4x4_MB ) && ( ps_cur_mb_info -> u1_tran_form8x8 == 1 ) ) { UWORD8 u1_is_left_sub_block , u1_is_top_sub_block = uc_useTopMB ; UWORD8 u1_sub_blk_x , u1_sub_blk_y , u1_sub_mb_num ; WORD8 i1_top_pred_mode ; WORD8 i1_left_pred_mode ; UWORD8 * pu1_top , * pu1_left , * pu1_top_left ; WORD8 * pi1_cur_pred_mode , * pi1_left_pred_mode , * pc_topPredMode ; UWORD16 ui2_left_pred_buf_width = 0xffff ; WORD8 i1_intra_pred ; UWORD8 * pu1_prev_intra4x4_pred_mode_flag = pu1_prev_intra4x4_pred_mode_data ; UWORD8 * pu1_rem_intra4x4_pred_mode = pu1_prev_intra4x4_pred_mode_data + 4 ; WORD16 * pi2_y_coeff1 ; UWORD16 ui2_top_rt_mask ; UWORD32 u4_4x4_left_offset = 0 ; ui2_top_rt_mask = ( u1_use_top_right_mb << 1 ) | ( 0x4 ) ; if ( uc_useTopMB ) { ui2_top_rt_mask |= 0x1 ; } pi1_cur_pred_mode = ps_cur_mb_info -> ps_curmb -> pi1_intrapredmodes ; pc_topPredMode = ps_cur_mb_info -> ps_top_mb -> pi1_intrapredmodes ; if ( u1_top_available ) { if ( ps_top_mb -> u1_mb_type == I_4x4_MB ) { * ( WORD32 * ) pi1_cur_pred_mode = * ( WORD32 * ) pc_topPredMode ; } else { * ( WORD32 * ) pi1_cur_pred_mode = ( uc_useTopMB ) ? DC_DC_DC_DC : NOT_VALID ; } } else { * ( WORD32 * ) pi1_cur_pred_mode = NOT_VALID ; } pu1_top = puc_top - 8 ; pi1_left_pred_mode = ps_dec -> pi1_left_pred_mode ; if ( ! u1_mbaff ) { if ( u1_left_available ) { if ( ps_left_mb -> u1_mb_type != I_4x4_MB ) { * ( WORD32 * ) pi1_left_pred_mode = ( u2_use_left_mb_pack ) ? DC_DC_DC_DC : NOT_VALID ; } } else { * ( WORD32 * ) pi1_left_pred_mode = NOT_VALID ; } } else { UWORD8 u1_curMbfld = ps_cur_mb_info -> u1_mb_field_decodingflag ; UWORD8 u1_leftMbfld = ps_left_mb -> u1_mb_fld ; if ( ( ! u1_curMbfld ) && ( u1_leftMbfld ) ) { u4_4x4_left_offset = 1 ; } if ( u1_curMbfld ^ u1_leftMbfld ) { if ( u1_topmb | ( ( u1_topmb == 0 ) && ( ( ps_curmb - 1 ) -> u1_mb_type != I_4x4_MB ) ) ) { if ( u1_left_available ) { if ( ps_left_mb -> u1_mb_type != I_4x4_MB ) { if ( CHECKBIT ( u2_use_left_mb_pack , 0 ) == 0 ) { * ( WORD32 * ) pi1_left_pred_mode = NOT_VALID ; } else { * ( WORD32 * ) pi1_left_pred_mode = DC_DC_DC_DC ; } } } else { * ( WORD32 * ) pi1_left_pred_mode = NOT_VALID ; } if ( u1_curMbfld ) { if ( u1_left_available ) { if ( ( ps_left_mb + 1 ) -> u1_mb_type != I_4x4_MB ) { if ( u2_use_left_mb_pack >> 8 ) { * ( WORD32 * ) ( pi1_left_pred_mode + 4 ) = DC_DC_DC_DC ; } else { * ( WORD32 * ) ( pi1_left_pred_mode + 4 ) = NOT_VALID ; } } } else { * ( WORD32 * ) ( pi1_left_pred_mode + 4 ) = NOT_VALID ; } pi1_left_pred_mode [ 1 ] = pi1_left_pred_mode [ 2 ] ; pi1_left_pred_mode [ 2 ] = pi1_left_pred_mode [ 4 ] ; pi1_left_pred_mode [ 3 ] = pi1_left_pred_mode [ 6 ] ; * ( WORD32 * ) ( pi1_left_pred_mode + 4 ) = * ( WORD32 * ) pi1_left_pred_mode ; } else { pi1_left_pred_mode [ 7 ] = pi1_left_pred_mode [ 3 ] ; pi1_left_pred_mode [ 6 ] = pi1_left_pred_mode [ 3 ] ; pi1_left_pred_mode [ 5 ] = pi1_left_pred_mode [ 2 ] ; pi1_left_pred_mode [ 4 ] = pi1_left_pred_mode [ 2 ] ; pi1_left_pred_mode [ 3 ] = pi1_left_pred_mode [ 1 ] ; pi1_left_pred_mode [ 2 ] = pi1_left_pred_mode [ 1 ] ; pi1_left_pred_mode [ 1 ] = pi1_left_pred_mode [ 0 ] ; } } pi1_left_pred_mode += ( u1_topmb ) ? 0 : 4 ; } else { pi1_left_pred_mode += ( u1_topmb ) ? 0 : 4 ; if ( u1_left_available ) { if ( ps_left_mb -> u1_mb_type != I_4x4_MB ) { * ( WORD32 * ) pi1_left_pred_mode = ( u2_use_left_mb_pack ) ? DC_DC_DC_DC : NOT_VALID ; } } else { * ( WORD32 * ) pi1_left_pred_mode = NOT_VALID ; } } } pi2_y_coeff1 = pi2_y_coeff ; if ( u1_use_top_left_mb ) { pu1_top_left = pu1_ytop_left ; } else { pu1_top_left = NULL ; } for ( u1_sub_mb_num = 0 ; u1_sub_mb_num < 4 ; u1_sub_mb_num ++ ) { u1_sub_blk_x = ( u1_sub_mb_num & 0x1 ) ; u1_sub_blk_y = ( u1_sub_mb_num >> 1 ) ; i1_top_pred_mode = pi1_cur_pred_mode [ u1_sub_blk_x << 1 ] ; i1_left_pred_mode = pi1_left_pred_mode [ u1_sub_blk_y << 1 ] ; if ( 2 == u1_sub_mb_num ) { i1_left_pred_mode = pi1_left_pred_mode [ ( u1_sub_blk_y << 1 ) + u4_4x4_left_offset ] ; } u1_use_top_right_mb = ( ! ! CHECKBIT ( ui2_top_rt_mask , u1_sub_mb_num ) ) ; if ( u1_sub_blk_x ) { u1_is_left_sub_block = 1 ; } else { u1_is_left_sub_block = ( u1_sub_blk_y < 1 ) ? ( CHECKBIT ( u2_use_left_mb_pack , 0 ) ) : ( u2_use_left_mb_pack >> 8 ) ; } if ( u1_sub_blk_y ) { u1_is_top_sub_block = 1 ; pu1_top = pu1_luma_rec_buffer - ui_rec_width ; } else { pu1_top += 8 ; } if ( ( u1_sub_blk_x ) | ( u4_num_pmbair != 0 ) ) { pu1_left = pu1_luma_rec_buffer - 1 ; ui2_left_pred_buf_width = ui_rec_width ; } else { pu1_left = pu1_yleft ; pu1_yleft += ( ui_rec_width << 3 ) ; ui2_left_pred_buf_width = ui_rec_width ; } if ( u1_sub_mb_num ) { pu1_top_left = ( u1_sub_blk_x ) ? pu1_top - 1 : pu1_left - ui_rec_width ; if ( ( u1_sub_blk_x && ( ! u1_is_top_sub_block ) ) || ( ( ! u1_sub_blk_x ) && ( ! u1_is_left_sub_block ) ) ) { pu1_top_left = NULL ; } } i1_intra_pred = ( ( i1_left_pred_mode < 0 ) | ( i1_top_pred_mode < 0 ) ) ? DC : MIN ( i1_left_pred_mode , i1_top_pred_mode ) ; { UWORD8 u1_packed_modes = ( u1_is_top_sub_block << 1 ) + u1_is_left_sub_block ; UWORD8 * pu1_intra_err_codes = ( UWORD8 * ) gau1_ih264d_intra_pred_err_code ; PROFILE_DISABLE_INTRA_PRED ( ) if ( ! pu1_prev_intra4x4_pred_mode_flag [ u1_sub_mb_num ] ) { i1_intra_pred = pu1_rem_intra4x4_pred_mode [ u1_sub_mb_num ] + ( pu1_rem_intra4x4_pred_mode [ u1_sub_mb_num ] >= i1_intra_pred ) ; <S2SV_StartBug> } <S2SV_EndBug> { UWORD8 u1_err_code = pu1_intra_err_codes [ i1_intra_pred ] ; if ( ( u1_err_code & u1_packed_modes ) ^ u1_err_code ) { i1_intra_pred = 0 ; ps_dec -> i4_error_code = ERROR_INTRAPRED ; } } } { UWORD8 au1_ngbr_pels [ 25 ] ; WORD32 ngbr_avail ; ngbr_avail = u1_is_left_sub_block << 0 ; ngbr_avail |= u1_is_top_sub_block << 2 ; if ( pu1_top_left ) ngbr_avail |= 1 << 1 ; ngbr_avail |= u1_use_top_right_mb << 3 ; PROFILE_DISABLE_INTRA_PRED ( ) { ps_dec -> pf_intra_pred_ref_filtering ( pu1_left , pu1_top_left , pu1_top , au1_ngbr_pels , ui2_left_pred_buf_width , ngbr_avail ) ; ps_dec -> apf_intra_pred_luma_8x8 [ i1_intra_pred ] ( au1_ngbr_pels , pu1_luma_rec_buffer , 1 , ui_rec_width , ( ( u1_is_top_sub_block << 2 ) | u1_is_left_sub_block ) ) ; } } if ( CHECKBIT ( ps_cur_mb_info -> u1_cbp , u1_sub_mb_num ) ) { WORD16 * pi2_scale_matrix_ptr ; WORD16 ai2_tmp [ 64 ] ; pi2_scale_matrix_ptr = ps_dec -> s_high_profile . i2_scalinglist8x8 [ 0 ] ; PROFILE_DISABLE_IQ_IT_RECON ( ) { if ( CHECKBIT ( u4_luma_dc_only_cbp , u1_sub_mb_num ) ) { ps_dec -> pf_iquant_itrans_recon_luma_8x8_dc ( pi2_y_coeff1 , pu1_luma_rec_buffer , pu1_luma_rec_buffer , ui_rec_width , ui_rec_width , gau1_ih264d_dequant8x8_cavlc [ ps_cur_mb_info -> u1_qp_rem6 ] , ( UWORD16 * ) pi2_scale_matrix_ptr , ps_cur_mb_info -> u1_qp_div6 , ai2_tmp , 0 , NULL ) ; } else { ps_dec -> pf_iquant_itrans_recon_luma_8x8 ( pi2_y_coeff1 , pu1_luma_rec_buffer , pu1_luma_rec_buffer , ui_rec_width , ui_rec_width , gau1_ih264d_dequant8x8_cavlc [ ps_cur_mb_info -> u1_qp_rem6 ] , ( UWORD16 * ) pi2_scale_matrix_ptr , ps_cur_mb_info -> u1_qp_div6 , ai2_tmp , 0 , NULL ) ; } } } pi2_y_coeff1 += 64 ; pu1_luma_rec_buffer += ( u1_sub_blk_x == 1 ) ? ( ui_rec_width << 3 ) - ( 8 * 1 ) : 8 ; pi1_cur_pred_mode [ u1_sub_blk_x << 1 ] = i1_intra_pred ; pi1_cur_pred_mode [ ( u1_sub_blk_x << 1 ) + 1 ] = i1_intra_pred ; pi1_left_pred_mode [ u1_sub_blk_y << 1 ] = i1_intra_pred ; pi1_left_pred_mode [ ( u1_sub_blk_y << 1 ) + 1 ] = i1_intra_pred ; } } ih264d_unpack_chroma_coeff4x4_mb ( ps_dec , ps_cur_mb_info ) ; { UWORD8 u1_intra_chrom_pred_mode ; UWORD8 u1_chroma_cbp = ( UWORD8 ) ( ps_cur_mb_info -> u1_cbp >> 4 ) ; u1_intra_chrom_pred_mode = CHROMA_TO_LUMA_INTRA_MODE ( ps_cur_mb_info -> u1_chroma_pred_mode ) ; { UWORD8 u1_packed_modes = ( u1_top_available << 1 ) + u1_left_available ; UWORD8 u1_err_code = ( u1_intra_chrom_pred_mode & 1 ) ? u1_intra_chrom_pred_mode : ( u1_intra_chrom_pred_mode ^ 2 ) ; if ( ( u1_err_code & u1_packed_modes ) ^ u1_err_code ) { u1_intra_chrom_pred_mode = 0 ; ps_dec -> i4_error_code = ERROR_INTRAPRED ; } } if ( u1_chroma_cbp != CBPC_ALLZERO ) { UWORD16 u2_chroma_csbp = ( u1_chroma_cbp == CBPC_ACZERO ) ? 0 : ps_cur_mb_info -> u2_chroma_csbp ; UWORD32 u4_scale_u ; UWORD32 u4_scale_v ; { UWORD16 au2_ngbr_pels [ 33 ] ; UWORD8 * pu1_ngbr_pels = ( UWORD8 * ) au2_ngbr_pels ; UWORD16 * pu2_left_uv ; UWORD16 * pu2_topleft_uv ; WORD32 use_left1 = ( u2_use_left_mb_pack & 0x0ff ) ; WORD32 use_left2 = ( u2_use_left_mb_pack & 0xff00 ) >> 8 ; pu2_left_uv = ( UWORD16 * ) pu1_uleft ; pu2_topleft_uv = ( UWORD16 * ) pu1_u_top_left ; if ( u2_use_left_mb_pack ) { WORD32 i ; if ( use_left1 ) { for ( i = 0 ; i < 4 ; i ++ ) au2_ngbr_pels [ 8 - 1 - i ] = pu2_left_uv [ i * u4_recwidth_cr / YUV420SP_FACTOR ] ; } else { memset ( au2_ngbr_pels + 4 , 0 , 4 * sizeof ( UWORD16 ) ) ; } if ( use_left2 ) { for ( i = 4 ; i < 8 ; i ++ ) au2_ngbr_pels [ 8 - 1 - i ] = pu2_left_uv [ i * u4_recwidth_cr / YUV420SP_FACTOR ] ; } else { memset ( au2_ngbr_pels , 0 , 4 * sizeof ( UWORD16 ) ) ; } } else { memset ( au2_ngbr_pels , 0 , 8 * sizeof ( UWORD16 ) ) ; } au2_ngbr_pels [ 8 ] = * pu2_topleft_uv ; if ( uc_useTopMB ) { memcpy ( au2_ngbr_pels + 8 + 1 , pu1_top_u , 8 * sizeof ( UWORD16 ) ) ; } else { memset ( au2_ngbr_pels + 8 + 1 , 0 , 8 * sizeof ( UWORD16 ) ) ; } PROFILE_DISABLE_INTRA_PRED ( ) ps_dec -> apf_intra_pred_chroma [ u1_intra_chrom_pred_mode ] ( pu1_ngbr_pels , pu1_mb_cb_rei1_buffer , 1 , u4_recwidth_cr , ( ( uc_useTopMB << 2 ) | ( use_left2 << 4 ) | use_left1 ) ) ; } u4_scale_u = ps_cur_mb_info -> u1_qpc_div6 ; u4_scale_v = ps_cur_mb_info -> u1_qpcr_div6 ; pi2_y_coeff = ps_dec -> pi2_coeff_data ; { UWORD32 i ; WORD16 ai2_tmp [ 16 ] ; for ( i = 0 ; i < 4 ; i ++ ) { WORD16 * pi2_level = pi2_y_coeff + ( i << 4 ) ; UWORD8 * pu1_pred_sblk = pu1_mb_cb_rei1_buffer + ( ( i & 0x1 ) * BLK_SIZE * YUV420SP_FACTOR ) + ( i >> 1 ) * ( u4_recwidth_cr << 2 ) ; PROFILE_DISABLE_IQ_IT_RECON ( ) { if ( CHECKBIT ( u2_chroma_csbp , i ) ) { ps_dec -> pf_iquant_itrans_recon_chroma_4x4 ( pi2_level , pu1_pred_sblk , pu1_pred_sblk , u4_recwidth_cr , u4_recwidth_cr , gau2_ih264_iquant_scale_4x4 [ ps_cur_mb_info -> u1_qpc_rem6 ] , ( UWORD16 * ) ps_dec -> s_high_profile . i2_scalinglist4x4 [ 1 ] , u4_scale_u , ai2_tmp , pi2_level ) ; } else if ( pi2_level [ 0 ] != 0 ) { ps_dec -> pf_iquant_itrans_recon_chroma_4x4_dc ( pi2_level , pu1_pred_sblk , pu1_pred_sblk , u4_recwidth_cr , u4_recwidth_cr , gau2_ih264_iquant_scale_4x4 [ ps_cur_mb_info -> u1_qpc_rem6 ] , ( UWORD16 * ) ps_dec -> s_high_profile . i2_scalinglist4x4 [ 1 ] , u4_scale_u , ai2_tmp , pi2_level ) ; } } } } pi2_y_coeff += MB_CHROM_SIZE ; u2_chroma_csbp = u2_chroma_csbp >> 4 ; { UWORD32 i ; WORD16 ai2_tmp [ 16 ] ; for ( i = 0 ; i < 4 ; i ++ ) { WORD16 * pi2_level = pi2_y_coeff + ( i << 4 ) ; UWORD8 * pu1_pred_sblk = pu1_mb_cb_rei1_buffer + 1 + ( ( i & 0x1 ) * BLK_SIZE * YUV420SP_FACTOR ) + ( i >> 1 ) * ( u4_recwidth_cr << 2 ) ; PROFILE_DISABLE_IQ_IT_RECON ( ) { if ( CHECKBIT ( u2_chroma_csbp , i ) ) { ps_dec -> pf_iquant_itrans_recon_chroma_4x4 ( pi2_level , pu1_pred_sblk , pu1_pred_sblk , u4_recwidth_cr , u4_recwidth_cr , gau2_ih264_iquant_scale_4x4 [ ps_cur_mb_info -> u1_qpcr_rem6 ] , ( UWORD16 * ) ps_dec -> s_high_profile . i2_scalinglist4x4 [ 2 ] , u4_scale_v , ai2_tmp , pi2_level ) ; } else if ( pi2_level [ 0 ] != 0 ) { ps_dec -> pf_iquant_itrans_recon_chroma_4x4_dc ( pi2_level , pu1_pred_sblk , pu1_pred_sblk , u4_recwidth_cr , u4_recwidth_cr , gau2_ih264_iquant_scale_4x4 [ ps_cur_mb_info -> u1_qpcr_rem6 ] , ( UWORD16 * ) ps_dec -> s_high_profile . i2_scalinglist4x4 [ 2 ] , u4_scale_v , ai2_tmp , pi2_level ) ; } } } } } else { { UWORD16 au2_ngbr_pels [ 33 ] ; UWORD8 * pu1_ngbr_pels = ( UWORD8 * ) au2_ngbr_pels ; UWORD16 * pu2_left_uv ; UWORD16 * pu2_topleft_uv ; WORD32 use_left1 = ( u2_use_left_mb_pack & 0x0ff ) ; WORD32 use_left2 = ( u2_use_left_mb_pack & 0xff00 ) >> 8 ; pu2_topleft_uv = ( UWORD16 * ) pu1_u_top_left ; pu2_left_uv = ( UWORD16 * ) pu1_uleft ; if ( u2_use_left_mb_pack ) { WORD32 i ; if ( use_left1 ) { for ( i = 0 ; i < 4 ; i ++ ) au2_ngbr_pels [ 8 - 1 - i ] = pu2_left_uv [ i * u4_recwidth_cr / YUV420SP_FACTOR ] ; } else { memset ( au2_ngbr_pels + 4 , 0 , 4 * sizeof ( UWORD16 ) ) ; } if ( use_left2 ) { for ( i = 4 ; i < 8 ; i ++ ) au2_ngbr_pels [ 8 - 1 - i ] = pu2_left_uv [ i * u4_recwidth_cr / YUV420SP_FACTOR ] ; } else { memset ( au2_ngbr_pels , 0 , 4 * sizeof ( UWORD16 ) ) ; } } else { memset ( au2_ngbr_pels , 0 , 8 * sizeof ( UWORD16 ) ) ; } au2_ngbr_pels [ 8 ] = * pu2_topleft_uv ; if ( uc_useTopMB ) { memcpy ( au2_ngbr_pels + 8 + 1 , pu1_top_u , 8 * sizeof ( UWORD16 ) ) ; } else { memset ( au2_ngbr_pels + 8 + 1 , 0 , 8 * sizeof ( UWORD16 ) ) ; } PROFILE_DISABLE_INTRA_PRED ( ) ps_dec -> apf_intra_pred_chroma [ u1_intra_chrom_pred_mode ] ( pu1_ngbr_pels , pu1_mb_cb_rei1_buffer , 1 , u4_recwidth_cr , ( ( uc_useTopMB << 2 ) | ( use_left2 << 4 ) | use_left1 ) ) ; } } } return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } i1_intra_pred = CLIP3 ( 0 , 8 , i1_intra_pred ) ; <S2SV_ModStart> ) ; } i1_intra_pred = CLIP3 ( 0 , 8 , i1_intra_pred ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 int pci_emul_add_capability ( struct pci_vdev * dev , u_char * capdata , int caplen ) { int i , capoff , reallen ; uint16_t sts ; <S2SV_StartBug> assert ( caplen > 0 ) ; <S2SV_EndBug> reallen = roundup2 ( caplen , 4 ) ; sts = pci_get_cfgdata16 ( dev , PCIR_STATUS ) ; if ( ( sts & PCIM_STATUS_CAPPRESENT ) == 0 ) capoff = CAP_START_OFFSET ; else capoff = dev -> capend + 1 ; if ( capoff + reallen > PCI_REGMAX + 1 ) return - 1 ; if ( ( sts & PCIM_STATUS_CAPPRESENT ) == 0 ) { pci_set_cfgdata8 ( dev , PCIR_CAP_PTR , capoff ) ; pci_set_cfgdata16 ( dev , PCIR_STATUS , sts | PCIM_STATUS_CAPPRESENT ) ; } else pci_set_cfgdata8 ( dev , dev -> prevcap + 1 , capoff ) ; for ( i = 0 ; i < caplen ; i ++ ) pci_set_cfgdata8 ( dev , capoff + i , capdata [ i ] ) ; pci_set_cfgdata8 ( dev , capoff + 1 , 0 ) ; dev -> prevcap = capoff ; dev -> capend = capoff + reallen - 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint16_t sts ; <S2SV_ModEnd> reallen = roundup2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12893\n\n```\nCWE-125 static int name_len ( netdissect_options * ndo , const unsigned char * s , const unsigned char * maxbuf ) { const unsigned char * s0 = s ; unsigned char c ; if ( s >= maxbuf ) return ( - 1 ) ; ND_TCHECK2 ( * s , 1 ) ; c = * s ; if ( ( c & 0xC0 ) == 0xC0 ) return ( 2 ) ; while ( * s ) { if ( s >= maxbuf ) return ( - 1 ) ; ND_TCHECK2 ( * s , 1 ) ; s += ( * s ) + 1 ; <S2SV_StartBug> } <S2SV_EndBug> return ( PTR_DIFF ( s , s0 ) + 1 ) ; trunc : return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 1 ; ND_TCHECK2 ( * s , 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 <S2SV_StartBug> void generic_pipe_buf_get ( struct pipe_inode_info * pipe , struct pipe_buffer * buf ) <S2SV_EndBug> { <S2SV_StartBug> get_page ( buf -> page ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> bool <S2SV_ModEnd> generic_pipe_buf_get ( struct <S2SV_ModStart> buf ) { return try_get_page <S2SV_ModEnd> ( buf ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8894\n\n```\nCWE-415 static Image * ReadTGAImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; PixelInfo pixel ; Quantum index ; register Quantum * q ; register ssize_t i , x ; size_t base , flag , offset , real , skip ; ssize_t count , y ; TGAInfo tga_info ; unsigned char j , k , pixels [ 4 ] , runlength ; unsigned int alpha_bits ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 1 , & tga_info . id_length ) ; tga_info . colormap_type = ( unsigned char ) ReadBlobByte ( image ) ; tga_info . image_type = ( TGAImageType ) ReadBlobByte ( image ) ; if ( ( count != 1 ) || ( ( tga_info . image_type != TGAColormap ) && ( tga_info . image_type != TGARGB ) && ( tga_info . image_type != TGAMonochrome ) && ( tga_info . image_type != TGARLEColormap ) && ( tga_info . image_type != TGARLERGB ) && ( tga_info . image_type != TGARLEMonochrome ) ) || ( ( ( tga_info . image_type == TGAColormap ) || ( tga_info . image_type == TGARLEColormap ) ) && ( tga_info . colormap_type == 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; tga_info . colormap_index = ReadBlobLSBShort ( image ) ; tga_info . colormap_length = ReadBlobLSBShort ( image ) ; tga_info . colormap_size = ( unsigned char ) ReadBlobByte ( image ) ; tga_info . x_origin = ReadBlobLSBShort ( image ) ; tga_info . y_origin = ReadBlobLSBShort ( image ) ; tga_info . width = ( unsigned short ) ReadBlobLSBShort ( image ) ; tga_info . height = ( unsigned short ) ReadBlobLSBShort ( image ) ; tga_info . bits_per_pixel = ( unsigned char ) ReadBlobByte ( image ) ; tga_info . attributes = ( unsigned char ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; if ( ( ( ( tga_info . bits_per_pixel <= 1 ) || ( tga_info . bits_per_pixel >= 17 ) ) && ( tga_info . bits_per_pixel != 24 ) && ( tga_info . bits_per_pixel != 32 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = tga_info . width ; image -> rows = tga_info . height ; alpha_bits = ( tga_info . attributes & 0x0FU ) ; image -> alpha_trait = ( alpha_bits > 0 ) || ( tga_info . bits_per_pixel == 32 ) || ( tga_info . colormap_size == 32 ) ? BlendPixelTrait : UndefinedPixelTrait ; if ( ( tga_info . image_type != TGAColormap ) && ( tga_info . image_type != TGARLEColormap ) ) image -> depth = ( size_t ) ( ( tga_info . bits_per_pixel <= 8 ) ? 8 : ( tga_info . bits_per_pixel <= 16 ) ? 5 : ( tga_info . bits_per_pixel == 24 ) ? 8 : ( tga_info . bits_per_pixel == 32 ) ? 8 : 8 ) ; else image -> depth = ( size_t ) ( ( tga_info . colormap_size <= 8 ) ? 8 : ( tga_info . colormap_size <= 16 ) ? 5 : ( tga_info . colormap_size == 24 ) ? 8 : ( tga_info . colormap_size == 32 ) ? 8 : 8 ) ; if ( ( tga_info . image_type == TGAColormap ) || ( tga_info . image_type == TGAMonochrome ) || ( tga_info . image_type == TGARLEColormap ) || ( tga_info . image_type == TGARLEMonochrome ) ) image -> storage_class = PseudoClass ; image -> compression = NoCompression ; if ( ( tga_info . image_type == TGARLEColormap ) || ( tga_info . image_type == TGARLEMonochrome ) || ( tga_info . image_type == TGARLERGB ) ) image -> compression = RLECompression ; if ( image -> storage_class == PseudoClass ) { if ( tga_info . colormap_type != 0 ) image -> colors = tga_info . colormap_index + tga_info . colormap_length ; else { size_t one ; one = 1 ; image -> colors = one << tga_info . bits_per_pixel ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } } if ( tga_info . id_length != 0 ) { char * comment ; size_t length ; length = ( size_t ) tga_info . id_length ; comment = ( char * ) NULL ; if ( ~ length >= ( MagickPathExtent - 1 ) ) comment = ( char * ) AcquireQuantumMemory ( length + MagickPathExtent , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , tga_info . id_length , ( unsigned char * ) comment ) ; comment [ tga_info . id_length ] = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; } if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( image ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; ( void ) ResetMagickMemory ( & pixel , 0 , sizeof ( pixel ) ) ; pixel . alpha = ( MagickRealType ) OpaqueAlpha ; if ( tga_info . colormap_type != 0 ) <S2SV_StartBug> { <S2SV_EndBug> if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) tga_info . colormap_index ; i ++ ) image -> colormap [ i ] = pixel ; for ( ; i < ( ssize_t ) image -> colors ; i ++ ) { switch ( tga_info . colormap_size ) { case 8 : default : { pixel . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; pixel . green = pixel . red ; pixel . blue = pixel . red ; break ; } case 15 : case 16 : { QuantumAny range ; j = ( unsigned char ) ReadBlobByte ( image ) ; k = ( unsigned char ) ReadBlobByte ( image ) ; range = GetQuantumRange ( 5UL ) ; pixel . red = ( MagickRealType ) ScaleAnyToQuantum ( 1UL * ( k & 0x7c ) >> 2 , range ) ; pixel . green = ( MagickRealType ) ScaleAnyToQuantum ( ( 1UL * ( k & 0x03 ) << 3 ) + ( 1UL * ( j & 0xe0 ) >> 5 ) , range ) ; pixel . blue = ( MagickRealType ) ScaleAnyToQuantum ( 1UL * ( j & 0x1f ) , range ) ; break ; } case 24 : { pixel . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; pixel . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; pixel . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; break ; } case 32 : { pixel . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; pixel . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; pixel . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; pixel . alpha = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; break ; } } image -> colormap [ i ] = pixel ; } } base = 0 ; flag = 0 ; skip = MagickFalse ; real = 0 ; index = 0 ; runlength = 0 ; offset = 0 ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { real = offset ; if ( ( ( unsigned char ) ( tga_info . attributes & 0x20 ) >> 5 ) == 0 ) real = image -> rows - real - 1 ; q = QueueAuthenticPixels ( image , 0 , ( ssize_t ) real , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( ( tga_info . image_type == TGARLEColormap ) || ( tga_info . image_type == TGARLERGB ) || ( tga_info . image_type == TGARLEMonochrome ) ) { if ( runlength != 0 ) { runlength -- ; skip = flag != 0 ; } else { count = ReadBlob ( image , 1 , & runlength ) ; if ( count != 1 ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; flag = runlength & 0x80 ; if ( flag != 0 ) runlength -= 128 ; skip = MagickFalse ; } } if ( skip == MagickFalse ) switch ( tga_info . bits_per_pixel ) { case 8 : default : { index = ( Quantum ) ReadBlobByte ( image ) ; if ( tga_info . colormap_type != 0 ) pixel = image -> colormap [ ( ssize_t ) ConstrainColormapIndex ( image , ( ssize_t ) index , exception ) ] ; else { pixel . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) index ) ; pixel . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) index ) ; pixel . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) index ) ; } break ; } case 15 : case 16 : { QuantumAny range ; if ( ReadBlob ( image , 2 , pixels ) != 2 ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; j = pixels [ 0 ] ; k = pixels [ 1 ] ; range = GetQuantumRange ( 5UL ) ; pixel . red = ( MagickRealType ) ScaleAnyToQuantum ( 1UL * ( k & 0x7c ) >> 2 , range ) ; pixel . green = ( MagickRealType ) ScaleAnyToQuantum ( ( 1UL * ( k & 0x03 ) << 3 ) + ( 1UL * ( j & 0xe0 ) >> 5 ) , range ) ; pixel . blue = ( MagickRealType ) ScaleAnyToQuantum ( 1UL * ( j & 0x1f ) , range ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) pixel . alpha = ( MagickRealType ) ( ( k & 0x80 ) == 0 ? ( Quantum ) TransparentAlpha : ( Quantum ) OpaqueAlpha ) ; if ( image -> storage_class == PseudoClass ) index = ( Quantum ) ConstrainColormapIndex ( image , ( ( ssize_t ) ( k << 8 ) ) + j , exception ) ; break ; } case 24 : { if ( ReadBlob ( image , 3 , pixels ) != 3 ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; pixel . blue = ( MagickRealType ) ScaleCharToQuantum ( pixels [ 0 ] ) ; pixel . green = ( MagickRealType ) ScaleCharToQuantum ( pixels [ 1 ] ) ; pixel . red = ( MagickRealType ) ScaleCharToQuantum ( pixels [ 2 ] ) ; break ; } case 32 : { if ( ReadBlob ( image , 4 , pixels ) != 4 ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; pixel . blue = ( MagickRealType ) ScaleCharToQuantum ( pixels [ 0 ] ) ; pixel . green = ( MagickRealType ) ScaleCharToQuantum ( pixels [ 1 ] ) ; pixel . red = ( MagickRealType ) ScaleCharToQuantum ( pixels [ 2 ] ) ; pixel . alpha = ( MagickRealType ) ScaleCharToQuantum ( pixels [ 3 ] ) ; break ; } } if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , index , q ) ; SetPixelRed ( image , ClampToQuantum ( pixel . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( pixel . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( pixel . blue ) , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ClampToQuantum ( pixel . alpha ) , q ) ; q += GetPixelChannels ( image ) ; } if ( ( ( unsigned char ) ( tga_info . attributes & 0xc0 ) >> 6 ) == 2 ) offset += 2 ; else offset ++ ; if ( offset >= image -> rows ) { base ++ ; offset = base ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( image -> colors < tga_info . colormap_index ) image -> colors = tga_info . colormap_index ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2375\n\n```\nCWE-189 static ssize_t __nfs4_get_acl_uncached ( struct inode * inode , void * buf , size_t buflen ) { struct page * pages [ NFS4ACL_MAXPAGES ] = { NULL , } ; struct nfs_getaclargs args = { . fh = NFS_FH ( inode ) , . acl_pages = pages , . acl_len = buflen , } ; struct nfs_getaclres res = { . acl_len = buflen , } ; void * resp_buf ; struct rpc_message msg = { . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_GETACL ] , . rpc_argp = & args , . rpc_resp = & res , } ; int ret = - ENOMEM , npages , i , acl_len = 0 ; npages = ( buflen + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; if ( npages == 0 ) npages = 1 ; for ( i = 0 ; i < npages ; i ++ ) { pages [ i ] = alloc_page ( GFP_KERNEL ) ; if ( ! pages [ i ] ) goto out_free ; } if ( npages > 1 ) { res . acl_scratch = alloc_page ( GFP_KERNEL ) ; if ( ! res . acl_scratch ) goto out_free ; } args . acl_len = npages * PAGE_SIZE ; args . acl_pgbase = 0 ; if ( buf == NULL ) res . acl_flags |= NFS4_ACL_LEN_REQUEST ; resp_buf = page_address ( pages [ 0 ] ) ; dprintk ( \"%s<S2SV_blank><S2SV_blank>buf<S2SV_blank>%p<S2SV_blank>buflen<S2SV_blank>%zu<S2SV_blank>npages<S2SV_blank>%d<S2SV_blank>args.acl_len<S2SV_blank>%zu\\\\n\" , __func__ , buf , buflen , npages , args . acl_len ) ; ret = nfs4_call_sync ( NFS_SERVER ( inode ) -> client , NFS_SERVER ( inode ) , & msg , & args . seq_args , & res . seq_res , 0 ) ; if ( ret ) goto out_free ; acl_len = res . acl_len - res . acl_data_offset ; if ( acl_len > args . acl_len ) nfs4_write_cached_acl ( inode , NULL , acl_len ) ; else nfs4_write_cached_acl ( inode , resp_buf + res . acl_data_offset , acl_len ) ; if ( buf ) { ret = - ERANGE ; if ( acl_len > buflen ) goto out_free ; _copy_from_pages ( buf , pages , res . acl_data_offset , <S2SV_StartBug> res . acl_len ) ; <S2SV_EndBug> } ret = acl_len ; out_free : for ( i = 0 ; i < npages ; i ++ ) if ( pages [ i ] ) __free_page ( pages [ i ] ) ; if ( res . acl_scratch ) __free_page ( res . acl_scratch ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . acl_data_offset , <S2SV_ModEnd> acl_len ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2463\n\n```\nCWE-119 int main ( int argc , char * * argv ) { u8 * byteStrmStart ; u8 * byteStrm ; u32 strmLen ; u32 picSize ; H264SwDecInst decInst ; H264SwDecRet ret ; H264SwDecInput decInput ; H264SwDecOutput decOutput ; H264SwDecPicture decPicture ; H264SwDecInfo decInfo ; u32 picNumber ; FILE * finput ; FILE * foutput ; if ( argc < 2 ) { printf ( \"Usage:<S2SV_blank>%s<S2SV_blank>file.h264\\\\n\" , argv [ 0 ] ) ; return - 1 ; } foutput = fopen ( \"out.yuv\" , \"wb\" ) ; if ( foutput == NULL ) { printf ( \"UNABLE<S2SV_blank>TO<S2SV_blank>OPEN<S2SV_blank>OUTPUT<S2SV_blank>FILE\\\\n\" ) ; return - 1 ; } finput = fopen ( argv [ argc - 1 ] , \"rb\" ) ; if ( finput == NULL ) { printf ( \"UNABLE<S2SV_blank>TO<S2SV_blank>OPEN<S2SV_blank>INPUT<S2SV_blank>FILE\\\\n\" ) ; return - 1 ; } fseek ( finput , 0L , SEEK_END ) ; strmLen = ( u32 ) ftell ( finput ) ; rewind ( finput ) ; <S2SV_StartBug> byteStrm = byteStrmStart = ( u8 * ) H264SwDecMalloc ( sizeof ( u8 ) * strmLen ) ; <S2SV_EndBug> if ( byteStrm == NULL ) { printf ( \"UNABLE<S2SV_blank>TO<S2SV_blank>ALLOCATE<S2SV_blank>MEMORY\\\\n\" ) ; return - 1 ; } fread ( byteStrm , sizeof ( u8 ) , strmLen , finput ) ; fclose ( finput ) ; ret = H264SwDecInit ( & decInst , 0 ) ; if ( ret != H264SWDEC_OK ) { printf ( \"DECODER<S2SV_blank>INITIALIZATION<S2SV_blank>FAILED\\\\n\" ) ; return - 1 ; } decInput . pStream = byteStrmStart ; decInput . dataLen = strmLen ; decInput . intraConcealmentMethod = 0 ; picNumber = 0 ; do { ret = H264SwDecDecode ( decInst , & decInput , & decOutput ) ; switch ( ret ) { case H264SWDEC_HDRS_RDY_BUFF_NOT_EMPTY : ret = H264SwDecGetInfo ( decInst , & decInfo ) ; if ( ret != H264SWDEC_OK ) return - 1 ; picSize = decInfo . picWidth * decInfo . picHeight ; picSize = ( 3 * picSize ) / 2 ; printf ( \"Width<S2SV_blank>%d<S2SV_blank>Height<S2SV_blank>%d\\\\n\" , decInfo . picWidth , decInfo . picHeight ) ; decInput . dataLen -= ( u32 ) ( decOutput . pStrmCurrPos - decInput . pStream ) ; decInput . pStream = decOutput . pStrmCurrPos ; break ; case H264SWDEC_PIC_RDY_BUFF_NOT_EMPTY : case H264SWDEC_PIC_RDY : decInput . dataLen -= ( u32 ) ( decOutput . pStrmCurrPos - decInput . pStream ) ; decInput . pStream = decOutput . pStrmCurrPos ; while ( H264SwDecNextPicture ( decInst , & decPicture , 0 ) == H264SWDEC_PIC_RDY ) { picNumber ++ ; printf ( \"PIC<S2SV_blank>%d,<S2SV_blank>type<S2SV_blank>%s,<S2SV_blank>concealed<S2SV_blank>%d\\\\n\" , picNumber , decPicture . isIdrPicture ? \"IDR\" : \"NON-IDR\" , decPicture . nbrOfErrMBs ) ; fflush ( stdout ) ; WriteOutput ( foutput , ( u8 * ) decPicture . pOutputPicture , picSize ) ; } break ; case H264SWDEC_EVALUATION_LIMIT_EXCEEDED : printf ( \"EVALUATION<S2SV_blank>LIMIT<S2SV_blank>REACHED\\\\n\" ) ; goto end ; default : printf ( \"UNRECOVERABLE<S2SV_blank>ERROR\\\\n\" ) ; return - 1 ; } } while ( decInput . dataLen > 0 ) ; end : while ( H264SwDecNextPicture ( decInst , & decPicture , 1 ) == H264SWDEC_PIC_RDY ) { picNumber ++ ; printf ( \"PIC<S2SV_blank>%d,<S2SV_blank>type<S2SV_blank>%s,<S2SV_blank>concealed<S2SV_blank>%d\\\\n\" , picNumber , decPicture . isIdrPicture ? \"IDR\" : \"NON-IDR\" , decPicture . nbrOfErrMBs ) ; fflush ( stdout ) ; WriteOutput ( foutput , ( u8 * ) decPicture . pOutputPicture , picSize ) ; } H264SwDecRelease ( decInst ) ; fclose ( foutput ) ; free ( byteStrmStart ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( u8 ) , <S2SV_ModEnd> strmLen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static INLINE void add_token ( TOKENEXTRA * * t , const vp9_prob * context_tree , <S2SV_EndBug> <S2SV_StartBug> int16_t extra , uint8_t token , <S2SV_EndBug> uint8_t skip_eob_node , unsigned int * counts ) { ( * t ) -> token = token ; ( * t ) -> extra = extra ; ( * t ) -> context_tree = context_tree ; ( * t ) -> skip_eob_node = skip_eob_node ; ( * t ) ++ ; ++ counts [ token ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> t , const vpx_prob <S2SV_ModEnd> * context_tree , <S2SV_ModStart> * context_tree , int32_t <S2SV_ModEnd> extra , uint8_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14734\n\n```\nCWE-416 static ssize_t ucma_process_join ( struct ucma_file * file , struct rdma_ucm_join_mcast * cmd , int out_len ) { struct rdma_ucm_create_id_resp resp ; struct ucma_context * ctx ; struct ucma_multicast * mc ; struct sockaddr * addr ; int ret ; u8 join_state ; if ( out_len < sizeof ( resp ) ) return - ENOSPC ; addr = ( struct sockaddr * ) & cmd -> addr ; if ( cmd -> addr_size != rdma_addr_size ( addr ) ) return - EINVAL ; if ( cmd -> join_flags == RDMA_MC_JOIN_FLAG_FULLMEMBER ) join_state = BIT ( FULLMEMBER_JOIN ) ; else if ( cmd -> join_flags == RDMA_MC_JOIN_FLAG_SENDONLY_FULLMEMBER ) join_state = BIT ( SENDONLY_FULLMEMBER_JOIN ) ; else return - EINVAL ; ctx = ucma_get_ctx_dev ( file , cmd -> id ) ; if ( IS_ERR ( ctx ) ) return PTR_ERR ( ctx ) ; mutex_lock ( & file -> mut ) ; mc = ucma_alloc_multicast ( ctx ) ; if ( ! mc ) { ret = - ENOMEM ; goto err1 ; } mc -> join_state = join_state ; mc -> uid = cmd -> uid ; memcpy ( & mc -> addr , addr , cmd -> addr_size ) ; ret = rdma_join_multicast ( ctx -> cm_id , ( struct sockaddr * ) & mc -> addr , join_state , mc ) ; if ( ret ) goto err2 ; resp . id = mc -> id ; if ( copy_to_user ( u64_to_user_ptr ( cmd -> response ) , & resp , sizeof ( resp ) ) ) { ret = - EFAULT ; goto err3 ; } <S2SV_StartBug> mutex_unlock ( & file -> mut ) ; <S2SV_EndBug> ucma_put_ctx ( ctx ) ; return 0 ; err3 : rdma_leave_multicast ( ctx -> cm_id , ( struct sockaddr * ) & mc -> addr ) ; ucma_cleanup_mc_events ( mc ) ; err2 : mutex_lock ( & mut ) ; idr_remove ( & multicast_idr , mc -> id ) ; mutex_unlock ( & mut ) ; list_del ( & mc -> list ) ; kfree ( mc ) ; err1 : mutex_unlock ( & file -> mut ) ; ucma_put_ctx ( ctx ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err3 ; } mutex_lock ( & mut ) ; idr_replace ( & multicast_idr , mc , mc -> id ) ; mutex_unlock ( & mut ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19807\n\n```\nCWE-416 int snd_timer_open ( struct snd_timer_instance * * ti , char * owner , struct snd_timer_id * tid , unsigned int slave_id ) { struct snd_timer * timer ; struct snd_timer_instance * timeri = NULL ; struct device * card_dev_to_put = NULL ; int err ; mutex_lock ( & register_mutex ) ; if ( tid -> dev_class == SNDRV_TIMER_CLASS_SLAVE ) { if ( tid -> dev_sclass <= SNDRV_TIMER_SCLASS_NONE || tid -> dev_sclass > SNDRV_TIMER_SCLASS_OSS_SEQUENCER ) { pr_debug ( \"ALSA:<S2SV_blank>timer:<S2SV_blank>invalid<S2SV_blank>slave<S2SV_blank>class<S2SV_blank>%i\\\\n\" , tid -> dev_sclass ) ; err = - EINVAL ; goto unlock ; } timeri = snd_timer_instance_new ( owner , NULL ) ; if ( ! timeri ) { err = - ENOMEM ; goto unlock ; } timeri -> slave_class = tid -> dev_sclass ; timeri -> slave_id = tid -> device ; timeri -> flags |= SNDRV_TIMER_IFLG_SLAVE ; list_add_tail ( & timeri -> open_list , & snd_timer_slave_list ) ; err = snd_timer_check_slave ( timeri ) ; if ( err < 0 ) { snd_timer_close_locked ( timeri , & card_dev_to_put ) ; timeri = NULL ; } goto unlock ; } timer = snd_timer_find ( tid ) ; # ifdef CONFIG_MODULES if ( ! timer ) { mutex_unlock ( & register_mutex ) ; snd_timer_request ( tid ) ; mutex_lock ( & register_mutex ) ; timer = snd_timer_find ( tid ) ; } # endif if ( ! timer ) { err = - ENODEV ; goto unlock ; } if ( ! list_empty ( & timer -> open_list_head ) ) { <S2SV_StartBug> timeri = list_entry ( timer -> open_list_head . next , <S2SV_EndBug> struct snd_timer_instance , open_list ) ; <S2SV_StartBug> if ( timeri -> flags & SNDRV_TIMER_IFLG_EXCLUSIVE ) { <S2SV_EndBug> <S2SV_StartBug> err = - EBUSY ; <S2SV_EndBug> timeri = NULL ; goto unlock ; } } if ( timer -> num_instances >= timer -> max_instances ) { err = - EBUSY ; goto unlock ; } timeri = snd_timer_instance_new ( owner , timer ) ; if ( ! timeri ) { err = - ENOMEM ; goto unlock ; } if ( timer -> card ) get_device ( & timer -> card -> card_dev ) ; timeri -> slave_class = tid -> dev_sclass ; timeri -> slave_id = slave_id ; if ( list_empty ( & timer -> open_list_head ) && timer -> hw . open ) { err = timer -> hw . open ( timer ) ; if ( err ) { kfree ( timeri -> owner ) ; kfree ( timeri ) ; timeri = NULL ; if ( timer -> card ) card_dev_to_put = & timer -> card -> card_dev ; module_put ( timer -> module ) ; goto unlock ; } } list_add_tail ( & timeri -> open_list , & timer -> open_list_head ) ; timer -> num_instances ++ ; err = snd_timer_check_master ( timeri ) ; if ( err < 0 ) { snd_timer_close_locked ( timeri , & card_dev_to_put ) ; timeri = NULL ; } unlock : mutex_unlock ( & register_mutex ) ; if ( card_dev_to_put ) put_device ( card_dev_to_put ) ; * ti = timeri ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { struct snd_timer_instance * t = <S2SV_ModEnd> list_entry ( timer <S2SV_ModStart> ; if ( t <S2SV_ModEnd> -> flags & <S2SV_ModStart> = - EBUSY <S2SV_ModEnd> ; goto unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_bilinear_predict8x8_neon ( unsigned char * src_ptr , int src_pixels_per_line , int xoffset , int yoffset , unsigned char * dst_ptr , int dst_pitch ) { uint8x8_t d0u8 , d1u8 , d2u8 , d3u8 , d4u8 , d5u8 , d6u8 , d7u8 , d8u8 , d9u8 , d11u8 ; uint8x8_t d22u8 , d23u8 , d24u8 , d25u8 , d26u8 , d27u8 , d28u8 , d29u8 , d30u8 ; uint8x16_t q1u8 , q2u8 , q3u8 , q4u8 , q5u8 ; uint16x8_t q1u16 , q2u16 , q3u16 , q4u16 , q5u16 ; uint16x8_t q6u16 , q7u16 , q8u16 , q9u16 , q10u16 ; if ( xoffset == 0 ) { d22u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d23u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d24u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d25u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d26u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d27u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d28u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d29u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d30u8 = vld1_u8 ( src_ptr ) ; } else { q1u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q2u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q3u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q4u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; <S2SV_StartBug> d0u8 = vdup_n_u8 ( ( uint8_t ) bifilter4_coeff [ xoffset ] [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> d1u8 = vdup_n_u8 ( ( uint8_t ) bifilter4_coeff [ xoffset ] [ 1 ] ) ; <S2SV_EndBug> q6u16 = vmull_u8 ( vget_low_u8 ( q1u8 ) , d0u8 ) ; q7u16 = vmull_u8 ( vget_low_u8 ( q2u8 ) , d0u8 ) ; q8u16 = vmull_u8 ( vget_low_u8 ( q3u8 ) , d0u8 ) ; q9u16 = vmull_u8 ( vget_low_u8 ( q4u8 ) , d0u8 ) ; d3u8 = vext_u8 ( vget_low_u8 ( q1u8 ) , vget_high_u8 ( q1u8 ) , 1 ) ; d5u8 = vext_u8 ( vget_low_u8 ( q2u8 ) , vget_high_u8 ( q2u8 ) , 1 ) ; d7u8 = vext_u8 ( vget_low_u8 ( q3u8 ) , vget_high_u8 ( q3u8 ) , 1 ) ; d9u8 = vext_u8 ( vget_low_u8 ( q4u8 ) , vget_high_u8 ( q4u8 ) , 1 ) ; q6u16 = vmlal_u8 ( q6u16 , d3u8 , d1u8 ) ; q7u16 = vmlal_u8 ( q7u16 , d5u8 , d1u8 ) ; q8u16 = vmlal_u8 ( q8u16 , d7u8 , d1u8 ) ; q9u16 = vmlal_u8 ( q9u16 , d9u8 , d1u8 ) ; d22u8 = vqrshrn_n_u16 ( q6u16 , 7 ) ; d23u8 = vqrshrn_n_u16 ( q7u16 , 7 ) ; d24u8 = vqrshrn_n_u16 ( q8u16 , 7 ) ; d25u8 = vqrshrn_n_u16 ( q9u16 , 7 ) ; q1u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q2u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q3u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q4u8 = vld1q_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; q5u8 = vld1q_u8 ( src_ptr ) ; q6u16 = vmull_u8 ( vget_low_u8 ( q1u8 ) , d0u8 ) ; q7u16 = vmull_u8 ( vget_low_u8 ( q2u8 ) , d0u8 ) ; q8u16 = vmull_u8 ( vget_low_u8 ( q3u8 ) , d0u8 ) ; q9u16 = vmull_u8 ( vget_low_u8 ( q4u8 ) , d0u8 ) ; q10u16 = vmull_u8 ( vget_low_u8 ( q5u8 ) , d0u8 ) ; d3u8 = vext_u8 ( vget_low_u8 ( q1u8 ) , vget_high_u8 ( q1u8 ) , 1 ) ; d5u8 = vext_u8 ( vget_low_u8 ( q2u8 ) , vget_high_u8 ( q2u8 ) , 1 ) ; d7u8 = vext_u8 ( vget_low_u8 ( q3u8 ) , vget_high_u8 ( q3u8 ) , 1 ) ; d9u8 = vext_u8 ( vget_low_u8 ( q4u8 ) , vget_high_u8 ( q4u8 ) , 1 ) ; d11u8 = vext_u8 ( vget_low_u8 ( q5u8 ) , vget_high_u8 ( q5u8 ) , 1 ) ; q6u16 = vmlal_u8 ( q6u16 , d3u8 , d1u8 ) ; q7u16 = vmlal_u8 ( q7u16 , d5u8 , d1u8 ) ; q8u16 = vmlal_u8 ( q8u16 , d7u8 , d1u8 ) ; q9u16 = vmlal_u8 ( q9u16 , d9u8 , d1u8 ) ; q10u16 = vmlal_u8 ( q10u16 , d11u8 , d1u8 ) ; d26u8 = vqrshrn_n_u16 ( q6u16 , 7 ) ; d27u8 = vqrshrn_n_u16 ( q7u16 , 7 ) ; d28u8 = vqrshrn_n_u16 ( q8u16 , 7 ) ; d29u8 = vqrshrn_n_u16 ( q9u16 , 7 ) ; d30u8 = vqrshrn_n_u16 ( q10u16 , 7 ) ; } if ( yoffset == 0 ) { vst1_u8 ( ( uint8_t * ) dst_ptr , d22u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d23u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d24u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d25u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d26u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d27u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d28u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d29u8 ) ; } else { d0u8 = vdup_n_u8 ( bifilter4_coeff [ yoffset ] [ 0 ] ) ; d1u8 = vdup_n_u8 ( bifilter4_coeff [ yoffset ] [ 1 ] ) ; q1u16 = vmull_u8 ( d22u8 , d0u8 ) ; q2u16 = vmull_u8 ( d23u8 , d0u8 ) ; q3u16 = vmull_u8 ( d24u8 , d0u8 ) ; q4u16 = vmull_u8 ( d25u8 , d0u8 ) ; q5u16 = vmull_u8 ( d26u8 , d0u8 ) ; q6u16 = vmull_u8 ( d27u8 , d0u8 ) ; q7u16 = vmull_u8 ( d28u8 , d0u8 ) ; q8u16 = vmull_u8 ( d29u8 , d0u8 ) ; q1u16 = vmlal_u8 ( q1u16 , d23u8 , d1u8 ) ; q2u16 = vmlal_u8 ( q2u16 , d24u8 , d1u8 ) ; q3u16 = vmlal_u8 ( q3u16 , d25u8 , d1u8 ) ; q4u16 = vmlal_u8 ( q4u16 , d26u8 , d1u8 ) ; q5u16 = vmlal_u8 ( q5u16 , d27u8 , d1u8 ) ; q6u16 = vmlal_u8 ( q6u16 , d28u8 , d1u8 ) ; q7u16 = vmlal_u8 ( q7u16 , d29u8 , d1u8 ) ; q8u16 = vmlal_u8 ( q8u16 , d30u8 , d1u8 ) ; d2u8 = vqrshrn_n_u16 ( q1u16 , 7 ) ; d3u8 = vqrshrn_n_u16 ( q2u16 , 7 ) ; d4u8 = vqrshrn_n_u16 ( q3u16 , 7 ) ; d5u8 = vqrshrn_n_u16 ( q4u16 , 7 ) ; d6u8 = vqrshrn_n_u16 ( q5u16 , 7 ) ; d7u8 = vqrshrn_n_u16 ( q6u16 , 7 ) ; d8u8 = vqrshrn_n_u16 ( q7u16 , 7 ) ; d9u8 = vqrshrn_n_u16 ( q8u16 , 7 ) ; vst1_u8 ( ( uint8_t * ) dst_ptr , d2u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d3u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d4u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d5u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d6u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d7u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d8u8 ) ; dst_ptr += dst_pitch ; vst1_u8 ( ( uint8_t * ) dst_ptr , d9u8 ) ; } return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = vdup_n_u8 ( <S2SV_ModEnd> bifilter4_coeff [ xoffset <S2SV_ModStart> = vdup_n_u8 ( <S2SV_ModEnd> bifilter4_coeff [ xoffset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 void jas_matrix_setall ( jas_matrix_t * matrix , jas_seqent_t val ) { <S2SV_StartBug> int i ; <S2SV_EndBug> int j ; jas_seqent_t * rowstart ; <S2SV_StartBug> int rowstep ; <S2SV_EndBug> jas_seqent_t * data ; if ( jas_matrix_numrows ( matrix ) > 0 && jas_matrix_numcols ( matrix ) > 0 ) { assert ( matrix -> rows_ ) ; rowstep = jas_matrix_rowstep ( matrix ) ; for ( i = matrix -> numrows_ , rowstart = matrix -> rows_ [ 0 ] ; i > 0 ; -- i , rowstart += rowstep ) { for ( j = matrix -> numcols_ , data = rowstart ; j > 0 ; -- j , ++ data ) { * data = val ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { jas_matind_t i ; jas_matind_t <S2SV_ModEnd> j ; jas_seqent_t <S2SV_ModStart> * rowstart ; jas_matind_t <S2SV_ModEnd> rowstep ; jas_seqent_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 <S2SV_StartBug> static void buffer_pipe_buf_get ( struct pipe_inode_info * pipe , <S2SV_EndBug> struct pipe_buffer * buf ) { struct buffer_ref * ref = ( struct buffer_ref * ) buf -> private ; <S2SV_StartBug> ref -> ref ++ ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static bool <S2SV_ModEnd> buffer_pipe_buf_get ( struct <S2SV_ModStart> -> private ; if ( ref -> ref > INT_MAX / 2 ) return false ; <S2SV_ModStart> ref ++ ; return true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10537\n\n```\nCWE-119 int ParseRiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { <S2SV_StartBug> int is_rf64 = ! strncmp ( fourcc , \"RF64\" , 4 ) , got_ds64 = 0 ; <S2SV_EndBug> int64_t total_samples = 0 , infilesize ; RiffChunkHeader riff_chunk_header ; ChunkHeader chunk_header ; WaveHeader WaveHeader ; DS64Chunk ds64_chunk ; uint32_t bcount ; CLEAR ( WaveHeader ) ; CLEAR ( ds64_chunk ) ; infilesize = DoGetFileSize ( infile ) ; if ( ! is_rf64 && infilesize >= 4294967296LL && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) ) { error_line ( \"can\\'t<S2SV_blank>handle<S2SV_blank>.WAV<S2SV_blank>files<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>4<S2SV_blank>GB<S2SV_blank>(non-standard)!\" ) ; return WAVPACK_SOFT_ERROR ; } memcpy ( & riff_chunk_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & riff_chunk_header ) + 4 , sizeof ( RiffChunkHeader ) - 4 , & bcount ) || bcount != sizeof ( RiffChunkHeader ) - 4 || strncmp ( riff_chunk_header . formType , \"WAVE\" , 4 ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & riff_chunk_header , sizeof ( RiffChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( ChunkHeader ) , & bcount ) || bcount != sizeof ( ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , ChunkHeaderFormat ) ; if ( ! strncmp ( chunk_header . ckID , \"ds64\" , 4 ) ) { if ( chunk_header . ckSize < sizeof ( DS64Chunk ) || ! DoReadFile ( infile , & ds64_chunk , sizeof ( DS64Chunk ) , & bcount ) || bcount != sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & ds64_chunk , sizeof ( DS64Chunk ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } got_ds64 = 1 ; WavpackLittleEndianToNative ( & ds64_chunk , DS64ChunkFormat ) ; if ( debug_logging_mode ) error_line ( \"DS64:<S2SV_blank>riffSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>dataSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>sampleCount<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>table_length<S2SV_blank>=<S2SV_blank>%d\" , ( long long ) ds64_chunk . riffSize64 , ( long long ) ds64_chunk . dataSize64 , ( long long ) ds64_chunk . sampleCount64 , ds64_chunk . tableLength ) ; if ( ds64_chunk . tableLength * sizeof ( CS64Chunk ) != chunk_header . ckSize - sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } while ( ds64_chunk . tableLength -- ) { CS64Chunk cs64_chunk ; if ( ! DoReadFile ( infile , & cs64_chunk , sizeof ( CS64Chunk ) , & bcount ) || bcount != sizeof ( CS64Chunk ) || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & cs64_chunk , sizeof ( CS64Chunk ) ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } } } else if ( ! strncmp ( chunk_header . ckID , \"fmt<S2SV_blank>\" , 4 ) ) { <S2SV_StartBug> int supported = TRUE , format ; <S2SV_EndBug> if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.WAV<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>WAV<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else if ( config -> float_norm_exp ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point<S2SV_blank>(Audition<S2SV_blank>%d:%d<S2SV_blank>float<S2SV_blank>type<S2SV_blank>1)\" , config -> float_norm_exp - 126 , 150 - config -> float_norm_exp ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! strncmp ( chunk_header . ckID , \"data\" , 4 ) ) { int64_t data_chunk_size = ( got_ds64 && chunk_header . ckSize == ( uint32_t ) - 1 ) ? ds64_chunk . dataSize64 : chunk_header . ckSize ; if ( ! WaveHeader . NumChannels || ( is_rf64 && ! got_ds64 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && infilesize - data_chunk_size > 16777216 ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( config -> qmode & QMODE_IGNORE_LENGTH ) { if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { total_samples = data_chunk_size / WaveHeader . BlockAlign ; if ( got_ds64 && total_samples != ds64_chunk . sampleCount64 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 1 ) & ~ 1L ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) , got_ds64 = 0 , format_chunk <S2SV_ModStart> , format ; if ( format_chunk ++ ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13004\n\n```\nCWE-125 static int juniper_parse_header ( netdissect_options * ndo , const u_char * p , const struct pcap_pkthdr * h , struct juniper_l2info_t * l2info ) { const struct juniper_cookie_table_t * lp = juniper_cookie_table ; u_int idx , jnx_ext_len , jnx_header_len = 0 ; uint8_t tlv_type , tlv_len ; uint32_t control_word ; int tlv_value ; const u_char * tptr ; l2info -> header_len = 0 ; l2info -> cookie_len = 0 ; l2info -> proto = 0 ; l2info -> length = h -> len ; l2info -> caplen = h -> caplen ; ND_TCHECK2 ( p [ 0 ] , 4 ) ; l2info -> flags = p [ 3 ] ; l2info -> direction = p [ 3 ] & JUNIPER_BPF_PKT_IN ; if ( EXTRACT_24BITS ( p ) != JUNIPER_MGC_NUMBER ) { ND_PRINT ( ( ndo , \"no<S2SV_blank>magic-number<S2SV_blank>found!\" ) ) ; return 0 ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%3s<S2SV_blank>\" , tok2str ( juniper_direction_values , \"---\" , l2info -> direction ) ) ) ; jnx_header_len = 4 ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\tJuniper<S2SV_blank>PCAP<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( jnx_flag_values , \"none\" , l2info -> flags ) ) ) ; if ( ( l2info -> flags & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) { tptr = p + jnx_header_len ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; jnx_ext_len = EXTRACT_16BITS ( tptr ) ; jnx_header_len += 2 ; tptr += 2 ; jnx_header_len += jnx_ext_len ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>PCAP<S2SV_blank>Extension(s)<S2SV_blank>total<S2SV_blank>length<S2SV_blank>%u\" , jnx_ext_len ) ) ; ND_TCHECK2 ( tptr [ 0 ] , jnx_ext_len ) ; while ( jnx_ext_len > JUNIPER_EXT_TLV_OVERHEAD ) { tlv_type = * ( tptr ++ ) ; tlv_len = * ( tptr ++ ) ; tlv_value = 0 ; if ( tlv_type == 0 || tlv_len == 0 ) break ; if ( tlv_len + JUNIPER_EXT_TLV_OVERHEAD > jnx_ext_len ) goto trunc ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Extension<S2SV_blank>TLV<S2SV_blank>#%u,<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>value<S2SV_blank>\" , tok2str ( jnx_ext_tlv_values , \"Unknown\" , tlv_type ) , tlv_type , tlv_len ) ) ; tlv_value = juniper_read_tlv_value ( tptr , tlv_type , tlv_len ) ; switch ( tlv_type ) { case JUNIPER_EXT_TLV_IFD_NAME : break ; case JUNIPER_EXT_TLV_IFD_MEDIATYPE : case JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%u)\" , tok2str ( juniper_ifmt_values , \"Unknown\" , tlv_value ) , tlv_value ) ) ; } break ; case JUNIPER_EXT_TLV_IFL_ENCAPS : case JUNIPER_EXT_TLV_TTP_IFL_ENCAPS : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%u)\" , tok2str ( juniper_ifle_values , \"Unknown\" , tlv_value ) , tlv_value ) ) ; } break ; case JUNIPER_EXT_TLV_IFL_IDX : case JUNIPER_EXT_TLV_IFL_UNIT : case JUNIPER_EXT_TLV_IFD_IDX : default : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%u\" , tlv_value ) ) ; } break ; } tptr += tlv_len ; jnx_ext_len -= tlv_len + JUNIPER_EXT_TLV_OVERHEAD ; } if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t-----original<S2SV_blank>packet-----\\\\n\\\\t\" ) ) ; } if ( ( l2info -> flags & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"no-L2-hdr,<S2SV_blank>\" ) ) ; ND_TCHECK2 ( p [ jnx_header_len + 4 ] , 1 ) ; if ( ip_heuristic_guess ( ndo , p + jnx_header_len + 4 , l2info -> length - ( jnx_header_len + 4 ) ) == 0 ) ND_PRINT ( ( ndo , \"no<S2SV_blank>IP-hdr<S2SV_blank>found!\" ) ) ; l2info -> header_len = jnx_header_len + 4 ; return 0 ; } l2info -> header_len = jnx_header_len ; p += l2info -> header_len ; l2info -> length -= l2info -> header_len ; l2info -> caplen -= l2info -> header_len ; ND_TCHECK ( p [ 0 ] ) ; while ( lp -> s != NULL ) { if ( lp -> pictype == l2info -> pictype ) { l2info -> cookie_len += lp -> cookie_len ; switch ( p [ 0 ] ) { case LS_COOKIE_ID : l2info -> cookie_type = LS_COOKIE_ID ; l2info -> cookie_len += 2 ; break ; case AS_COOKIE_ID : l2info -> cookie_type = AS_COOKIE_ID ; l2info -> cookie_len = 8 ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } # ifdef DLT_JUNIPER_MFR if ( l2info -> pictype == DLT_JUNIPER_MFR && ( p [ 0 ] & MFR_BE_MASK ) == MFR_BE_MASK ) { l2info -> cookie_len = 0 ; } # endif l2info -> header_len += l2info -> cookie_len ; l2info -> length -= l2info -> cookie_len ; l2info -> caplen -= l2info -> cookie_len ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%s-PIC,<S2SV_blank>cookie-len<S2SV_blank>%u\" , lp -> s , l2info -> cookie_len ) ) ; if ( l2info -> cookie_len > 0 ) { ND_TCHECK2 ( p [ 0 ] , l2info -> cookie_len ) ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>cookie<S2SV_blank>0x\" ) ) ; for ( idx = 0 ; idx < l2info -> cookie_len ; idx ++ ) { l2info -> cookie [ idx ] = p [ idx ] ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%02x\" , p [ idx ] ) ) ; } } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \":<S2SV_blank>\" ) ) ; <S2SV_StartBug> l2info -> proto = EXTRACT_16BITS ( p + l2info -> cookie_len ) ; <S2SV_EndBug> break ; } ++ lp ; } p += l2info -> cookie_len ; switch ( l2info -> pictype ) { # ifdef DLT_JUNIPER_MLPPP case DLT_JUNIPER_MLPPP : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : l2info -> bundle = l2info -> cookie [ 1 ] ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } break ; # endif # ifdef DLT_JUNIPER_MLFR case DLT_JUNIPER_MLFR : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : ND_TCHECK2 ( p [ 0 ] , 2 ) ; l2info -> bundle = l2info -> cookie [ 1 ] ; l2info -> proto = EXTRACT_16BITS ( p ) ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; } break ; # endif # ifdef DLT_JUNIPER_MFR case DLT_JUNIPER_MFR : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : ND_TCHECK2 ( p [ 0 ] , 2 ) ; l2info -> bundle = l2info -> cookie [ 1 ] ; l2info -> proto = EXTRACT_16BITS ( p ) ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } break ; # endif # ifdef DLT_JUNIPER_ATM2 case DLT_JUNIPER_ATM2 : ND_TCHECK2 ( p [ 0 ] , 4 ) ; if ( l2info -> cookie [ 7 ] & ATM2_PKT_TYPE_MASK ) { control_word = EXTRACT_32BITS ( p ) ; switch ( control_word ) { case 0 : case 0x08000000 : case 0x08380000 : l2info -> header_len += 4 ; break ; default : break ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"control-word<S2SV_blank>0x%08x<S2SV_blank>\" , control_word ) ) ; } break ; # endif # ifdef DLT_JUNIPER_GGSN case DLT_JUNIPER_GGSN : break ; # endif # ifdef DLT_JUNIPER_ATM1 case DLT_JUNIPER_ATM1 : break ; # endif # ifdef DLT_JUNIPER_PPP case DLT_JUNIPER_PPP : break ; # endif # ifdef DLT_JUNIPER_CHDLC case DLT_JUNIPER_CHDLC : break ; # endif # ifdef DLT_JUNIPER_ETHER case DLT_JUNIPER_ETHER : break ; # endif # ifdef DLT_JUNIPER_FRELAY case DLT_JUNIPER_FRELAY : break ; # endif default : ND_PRINT ( ( ndo , \"Unknown<S2SV_blank>Juniper<S2SV_blank>DLT_<S2SV_blank>type<S2SV_blank>%u:<S2SV_blank>\" , l2info -> pictype ) ) ; break ; } if ( ndo -> ndo_eflag > 1 ) ND_PRINT ( ( ndo , \"hlen<S2SV_blank>%u,<S2SV_blank>proto<S2SV_blank>0x%04x,<S2SV_blank>\" , l2info -> header_len , l2info -> proto ) ) ; return 1 ; trunc : ND_PRINT ( ( ndo , \"[|juniper_hdr],<S2SV_blank>length<S2SV_blank>%u\" , h -> len ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ND_TCHECK_16BITS ( p + l2info -> cookie_len ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2141\n\n```\nCWE-399 static int do_tkill ( pid_t tgid , pid_t pid , int sig ) { <S2SV_StartBug> struct siginfo info ; <S2SV_EndBug> info . si_signo = sig ; info . si_errno = 0 ; info . si_code = SI_TKILL ; info . si_pid = task_tgid_vnr ( current ) ; info . si_uid = from_kuid_munged ( current_user_ns ( ) , current_uid ( ) ) ; return do_send_specific ( tgid , pid , sig , & info ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct siginfo info = { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int jpc_ppm_getparms ( jpc_ms_t * ms , jpc_cstate_t * cstate , jas_stream_t * in ) { jpc_ppm_t * ppm = & ms -> parms . ppm ; cstate = 0 ; ppm -> data = 0 ; if ( ms -> len < 1 ) { goto error ; } if ( jpc_getuint8 ( in , & ppm -> ind ) ) { goto error ; } ppm -> len = ms -> len - 1 ; if ( ppm -> len > 0 ) { if ( ! ( ppm -> data = jas_malloc ( ppm -> len ) ) ) { goto error ; } <S2SV_StartBug> if ( JAS_CAST ( uint , jas_stream_read ( in , ppm -> data , ppm -> len ) ) != ppm -> len ) { <S2SV_EndBug> goto error ; } } else { ppm -> data = 0 ; } return 0 ; error : jpc_ppm_destroyparms ( ms ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_stream_read (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14363\n\n```\nCWE-22 static int pop_fetch_headers ( struct Context * ctx ) { struct PopData * pop_data = ( struct PopData * ) ctx -> data ; struct Progress progress ; # ifdef USE_HCACHE header_cache_t * hc = pop_hcache_open ( pop_data , ctx -> path ) ; # endif time ( & pop_data -> check_time ) ; pop_data -> clear_cache = false ; for ( int i = 0 ; i < ctx -> msgcount ; i ++ ) ctx -> hdrs [ i ] -> refno = - 1 ; const int old_count = ctx -> msgcount ; int ret = pop_fetch_data ( pop_data , \"UIDL\\\\r\\\\n\" , NULL , fetch_uidl , ctx ) ; const int new_count = ctx -> msgcount ; ctx -> msgcount = old_count ; if ( pop_data -> cmd_uidl == 2 ) { if ( ret == 0 ) { pop_data -> cmd_uidl = 1 ; mutt_debug ( 1 , \"set<S2SV_blank>UIDL<S2SV_blank>capability\\\\n\" ) ; } if ( ret == - 2 && pop_data -> cmd_uidl == 2 ) { pop_data -> cmd_uidl = 0 ; mutt_debug ( 1 , \"unset<S2SV_blank>UIDL<S2SV_blank>capability\\\\n\" ) ; snprintf ( pop_data -> err_msg , sizeof ( pop_data -> err_msg ) , \"%s\" , _ ( \"Command<S2SV_blank>UIDL<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>server.\" ) ) ; } } if ( ! ctx -> quiet ) { mutt_progress_init ( & progress , _ ( \"Fetching<S2SV_blank>message<S2SV_blank>headers...\" ) , MUTT_PROGRESS_MSG , ReadInc , new_count - old_count ) ; } if ( ret == 0 ) { int i , deleted ; for ( i = 0 , deleted = 0 ; i < old_count ; i ++ ) { if ( ctx -> hdrs [ i ] -> refno == - 1 ) { ctx -> hdrs [ i ] -> deleted = true ; deleted ++ ; } } if ( deleted > 0 ) { mutt_error ( ngettext ( \"%d<S2SV_blank>message<S2SV_blank>has<S2SV_blank>been<S2SV_blank>lost.<S2SV_blank>Try<S2SV_blank>reopening<S2SV_blank>the<S2SV_blank>mailbox.\" , \"%d<S2SV_blank>messages<S2SV_blank>have<S2SV_blank>been<S2SV_blank>lost.<S2SV_blank>Try<S2SV_blank>reopening<S2SV_blank>the<S2SV_blank>mailbox.\" , deleted ) , deleted ) ; } bool hcached = false ; for ( i = old_count ; i < new_count ; i ++ ) { if ( ! ctx -> quiet ) mutt_progress_update ( & progress , i + 1 - old_count , - 1 ) ; # ifdef USE_HCACHE void * data = mutt_hcache_fetch ( hc , ctx -> hdrs [ i ] -> data , strlen ( ctx -> hdrs [ i ] -> data ) ) ; if ( data ) { char * uidl = mutt_str_strdup ( ctx -> hdrs [ i ] -> data ) ; int refno = ctx -> hdrs [ i ] -> refno ; int index = ctx -> hdrs [ i ] -> index ; struct Header * h = mutt_hcache_restore ( ( unsigned char * ) data ) ; mutt_hcache_free ( hc , & data ) ; mutt_header_free ( & ctx -> hdrs [ i ] ) ; ctx -> hdrs [ i ] = h ; ctx -> hdrs [ i ] -> refno = refno ; ctx -> hdrs [ i ] -> index = index ; ctx -> hdrs [ i ] -> data = uidl ; ret = 0 ; hcached = true ; } else # endif if ( ( ret = pop_read_header ( pop_data , ctx -> hdrs [ i ] ) ) < 0 ) break ; # ifdef USE_HCACHE else { mutt_hcache_store ( hc , ctx -> hdrs [ i ] -> data , strlen ( ctx -> hdrs [ i ] -> data ) , ctx -> hdrs [ i ] , 0 ) ; } # endif const bool bcached = <S2SV_StartBug> ( mutt_bcache_exists ( pop_data -> bcache , ctx -> hdrs [ i ] -> data ) == 0 ) ; <S2SV_EndBug> ctx -> hdrs [ i ] -> old = false ; ctx -> hdrs [ i ] -> read = false ; if ( hcached ) { if ( bcached ) ctx -> hdrs [ i ] -> read = true ; else if ( MarkOld ) ctx -> hdrs [ i ] -> old = true ; } else { if ( bcached ) ctx -> hdrs [ i ] -> read = true ; } ctx -> msgcount ++ ; } if ( i > old_count ) mx_update_context ( ctx , i - old_count ) ; } # ifdef USE_HCACHE mutt_hcache_close ( hc ) ; # endif if ( ret < 0 ) { for ( int i = ctx -> msgcount ; i < new_count ; i ++ ) mutt_header_free ( & ctx -> hdrs [ i ] ) ; return ret ; } if ( MessageCacheClean ) mutt_bcache_list ( pop_data -> bcache , msg_cache_check , ( void * ) ctx ) ; mutt_clear_error ( ) ; return ( new_count - old_count ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> bcache , cache_id ( ctx -> hdrs [ i ] -> data ) <S2SV_ModEnd> ) == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 static int growOpArray ( Vdbe * v , int nOp ) { VdbeOp * pNew ; Parse * p = v -> pParse ; # ifdef SQLITE_TEST_REALLOC_STRESS <S2SV_StartBug> int nNew = ( v -> nOpAlloc >= 512 ? v -> nOpAlloc * 2 : v -> nOpAlloc + nOp ) ; <S2SV_EndBug> # else <S2SV_StartBug> int nNew = ( v -> nOpAlloc ? v -> nOpAlloc * 2 : ( int ) ( 1024 / sizeof ( Op ) ) ) ; <S2SV_EndBug> UNUSED_PARAMETER ( nOp ) ; # endif if ( nNew > p -> db -> aLimit [ SQLITE_LIMIT_VDBE_OP ] ) { sqlite3OomFault ( p -> db ) ; return SQLITE_NOMEM ; } assert ( nOp <= ( 1024 / sizeof ( Op ) ) ) ; assert ( nNew >= ( v -> nOpAlloc + nOp ) ) ; pNew = sqlite3DbRealloc ( p -> db , v -> aOp , nNew * sizeof ( Op ) ) ; if ( pNew ) { p -> szOpAlloc = sqlite3DbMallocSize ( p -> db , pNew ) ; v -> nOpAlloc = p -> szOpAlloc / sizeof ( Op ) ; v -> aOp = pNew ; } return ( pNew ? SQLITE_OK : SQLITE_NOMEM_BKPT ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> # ifdef SQLITE_TEST_REALLOC_STRESS sqlite3_int64 <S2SV_ModEnd> nNew = ( <S2SV_ModStart> >= 512 ? 2 * ( sqlite3_int64 ) v -> nOpAlloc : ( sqlite3_int64 ) <S2SV_ModEnd> v -> nOpAlloc <S2SV_ModStart> ; # else sqlite3_int64 <S2SV_ModEnd> nNew = ( <S2SV_ModStart> -> nOpAlloc ? 2 * ( sqlite3_int64 ) v -> nOpAlloc : ( sqlite3_int64 ) <S2SV_ModEnd> 1024 / sizeof <S2SV_ModStart> sizeof ( Op <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7872\n\n```\nCWE-20 static noinline void key_gc_unused_keys ( struct list_head * keys ) { while ( ! list_empty ( keys ) ) { struct key * key = list_entry ( keys -> next , struct key , graveyard_link ) ; list_del ( & key -> graveyard_link ) ; kdebug ( \"-<S2SV_blank>%u\" , key -> serial ) ; key_check ( key ) ; <S2SV_StartBug> if ( key -> type -> destroy ) <S2SV_EndBug> key -> type -> destroy ( key ) ; security_key_free ( key ) ; if ( test_bit ( KEY_FLAG_IN_QUOTA , & key -> flags ) ) { spin_lock ( & key -> user -> lock ) ; key -> user -> qnkeys -- ; key -> user -> qnbytes -= key -> quotalen ; spin_unlock ( & key -> user -> lock ) ; } atomic_dec ( & key -> user -> nkeys ) ; if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) atomic_dec ( & key -> user -> nikeys ) ; key_user_put ( key -> user ) ; kfree ( key -> description ) ; # ifdef KEY_DEBUGGING key -> magic = KEY_DEBUG_MAGIC_X ; # endif kmem_cache_free ( key_jar , key ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) && ! test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 static void destroy_super ( struct super_block * s ) { int i ; list_lru_destroy ( & s -> s_dentry_lru ) ; list_lru_destroy ( & s -> s_inode_lru ) ; <S2SV_StartBug> # ifdef CONFIG_SMP <S2SV_EndBug> free_percpu ( s -> s_files ) ; # endif for ( i = 0 ; i < SB_FREEZE_LEVELS ; i ++ ) percpu_counter_destroy ( & s -> s_writers . counter [ i ] ) ; security_sb_free ( s ) ; WARN_ON ( ! list_empty ( & s -> s_mounts ) ) ; kfree ( s -> s_subtype ) ; kfree ( s -> s_options ) ; kfree_rcu ( s , rcu ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s_inode_lru ) ; <S2SV_ModEnd> for ( i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void print_mi_data ( VP9_COMMON * cm , FILE * file , const char * descriptor , size_t member_offset ) { <S2SV_StartBug> int mi_row ; <S2SV_EndBug> int mi_col ; int mi_index = 0 ; <S2SV_StartBug> MODE_INFO * * mi_8x8 = cm -> mi_grid_visible ; <S2SV_EndBug> int rows = cm -> mi_rows ; int cols = cm -> mi_cols ; char prefix = descriptor [ 0 ] ; <S2SV_StartBug> log_frame_info ( cm , descriptor , file ) ; <S2SV_EndBug> mi_index = 0 ; for ( mi_row = 0 ; mi_row < rows ; mi_row ++ ) { fprintf ( file , \"%c<S2SV_blank>\" , prefix ) ; for ( mi_col = 0 ; mi_col < cols ; mi_col ++ ) { fprintf ( file , \"%2d<S2SV_blank>\" , <S2SV_StartBug> * ( ( int * ) ( ( char * ) ( & mi_8x8 [ mi_index ] -> mbmi ) + <S2SV_EndBug> member_offset ) ) ) ; <S2SV_StartBug> mi_index ++ ; <S2SV_EndBug> } fprintf ( file , \"\\\\n\" ) ; <S2SV_StartBug> mi_index += 8 ; <S2SV_EndBug> } fprintf ( file , \"\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { int mi_row , mi_col <S2SV_ModEnd> ; MODE_INFO * <S2SV_ModStart> MODE_INFO * * mi <S2SV_ModEnd> = cm -> <S2SV_ModStart> , file ) <S2SV_ModEnd> ; for ( <S2SV_ModStart> ) ( & mi [ 0 <S2SV_ModEnd> ] -> mbmi <S2SV_ModStart> ) ) ; mi <S2SV_ModEnd> ++ ; } <S2SV_ModStart> \"\\\\n\" ) ; mi <S2SV_ModEnd> += 8 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7501\n\n```\nCWE-59 static int fsmMkfile ( rpmfi fi , const char * dest , rpmfiles files , rpmpsm psm , int nodigest , int * setmeta , int * firsthardlink ) { int rc = 0 ; int numHardlinks = rpmfiFNlink ( fi ) ; if ( numHardlinks > 1 ) { if ( * firsthardlink < 0 ) { * firsthardlink = rpmfiFX ( fi ) ; <S2SV_StartBug> rc = expandRegular ( fi , dest , psm , nodigest , 1 ) ; <S2SV_EndBug> } else { char * fn = rpmfilesFN ( files , * firsthardlink ) ; rc = link ( fn , dest ) ; if ( rc < 0 ) { rc = RPMERR_LINK_FAILED ; } free ( fn ) ; } } if ( numHardlinks <= 1 ) { if ( ! rc ) <S2SV_StartBug> rc = expandRegular ( fi , dest , psm , nodigest , 0 ) ; <S2SV_EndBug> } else if ( rpmfiArchiveHasContent ( fi ) ) { if ( ! rc ) <S2SV_StartBug> rc = expandRegular ( fi , dest , psm , nodigest , 0 ) ; <S2SV_EndBug> * firsthardlink = - 1 ; } else { * setmeta = 0 ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , psm , 1 , <S2SV_ModStart> , psm , 1 , <S2SV_ModStart> , psm , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int calc_arf_boost ( VP9_COMP * cpi , int offset , int f_frames , int b_frames , int * f_boost , int * b_boost ) { <S2SV_StartBug> FIRSTPASS_STATS this_frame ; <S2SV_EndBug> struct twopass_rc * const twopass = & cpi -> twopass ; int i ; double boost_score = 0.0 ; double mv_ratio_accumulator = 0.0 ; double decay_accumulator = 1.0 ; double this_frame_mv_in_out = 0.0 ; double mv_in_out_accumulator = 0.0 ; double abs_mv_in_out_accumulator = 0.0 ; int arf_boost ; int flash_detected = 0 ; for ( i = 0 ; i < f_frames ; ++ i ) { <S2SV_StartBug> if ( read_frame_stats ( twopass , & this_frame , ( i + offset ) ) == EOF ) <S2SV_EndBug> break ; <S2SV_StartBug> accumulate_frame_motion_stats ( & this_frame , <S2SV_EndBug> & this_frame_mv_in_out , & mv_in_out_accumulator , & abs_mv_in_out_accumulator , & mv_ratio_accumulator ) ; flash_detected = detect_flash ( twopass , i + offset ) || detect_flash ( twopass , i + offset + 1 ) ; if ( ! flash_detected ) { <S2SV_StartBug> decay_accumulator *= get_prediction_decay_rate ( & cpi -> common , & this_frame ) ; <S2SV_EndBug> decay_accumulator = decay_accumulator < MIN_DECAY_FACTOR ? MIN_DECAY_FACTOR : decay_accumulator ; } <S2SV_StartBug> boost_score += ( decay_accumulator * <S2SV_EndBug> <S2SV_StartBug> calc_frame_boost ( cpi , & this_frame , this_frame_mv_in_out ) ) ; <S2SV_EndBug> } * f_boost = ( int ) boost_score ; boost_score = 0.0 ; mv_ratio_accumulator = 0.0 ; decay_accumulator = 1.0 ; this_frame_mv_in_out = 0.0 ; mv_in_out_accumulator = 0.0 ; abs_mv_in_out_accumulator = 0.0 ; for ( i = - 1 ; i >= - b_frames ; -- i ) { <S2SV_StartBug> if ( read_frame_stats ( twopass , & this_frame , ( i + offset ) ) == EOF ) <S2SV_EndBug> break ; <S2SV_StartBug> accumulate_frame_motion_stats ( & this_frame , <S2SV_EndBug> & this_frame_mv_in_out , & mv_in_out_accumulator , & abs_mv_in_out_accumulator , & mv_ratio_accumulator ) ; flash_detected = detect_flash ( twopass , i + offset ) || detect_flash ( twopass , i + offset + 1 ) ; if ( ! flash_detected ) { <S2SV_StartBug> decay_accumulator *= get_prediction_decay_rate ( & cpi -> common , & this_frame ) ; <S2SV_EndBug> decay_accumulator = decay_accumulator < MIN_DECAY_FACTOR ? MIN_DECAY_FACTOR : decay_accumulator ; } <S2SV_StartBug> boost_score += ( decay_accumulator * <S2SV_EndBug> <S2SV_StartBug> calc_frame_boost ( cpi , & this_frame , this_frame_mv_in_out ) ) ; <S2SV_EndBug> } * b_boost = ( int ) boost_score ; arf_boost = ( * f_boost + * b_boost ) ; if ( arf_boost < ( ( b_frames + f_frames ) * 20 ) ) <S2SV_StartBug> arf_boost = ( ( b_frames + f_frames ) * 20 ) ; <S2SV_EndBug> return arf_boost ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> b_boost ) { TWO_PASS <S2SV_ModEnd> * const twopass <S2SV_ModStart> i ) { const FIRSTPASS_STATS * this_frame = read_frame_stats ( twopass , i + offset ) ; if ( this_frame == NULL <S2SV_ModEnd> ) break ; <S2SV_ModStart> ; accumulate_frame_motion_stats ( <S2SV_ModEnd> this_frame , & <S2SV_ModStart> *= get_prediction_decay_rate ( cpi , <S2SV_ModEnd> this_frame ) ; <S2SV_ModStart> } boost_score += decay_accumulator * <S2SV_ModEnd> calc_frame_boost ( cpi <S2SV_ModStart> ( cpi , this_frame , this_frame_mv_in_out , GF_MAX_BOOST <S2SV_ModEnd> ) ; } <S2SV_ModStart> i ) { const FIRSTPASS_STATS * this_frame = read_frame_stats ( twopass , i + offset ) ; if ( this_frame == NULL <S2SV_ModEnd> ) break ; <S2SV_ModStart> ; accumulate_frame_motion_stats ( <S2SV_ModEnd> this_frame , & <S2SV_ModStart> *= get_prediction_decay_rate ( cpi , <S2SV_ModEnd> this_frame ) ; <S2SV_ModStart> } boost_score += decay_accumulator * <S2SV_ModEnd> calc_frame_boost ( cpi <S2SV_ModStart> ( cpi , this_frame , this_frame_mv_in_out , GF_MAX_BOOST <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) * 20 ) ; arf_boost = MAX ( arf_boost , MIN_ARF_GF_BOOST\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int64_t encode_inter_mb_segment ( VP9_COMP * cpi , MACROBLOCK * x , int64_t best_yrd , int i , int * labelyrate , int64_t * distortion , int64_t * sse , ENTROPY_CONTEXT * ta , ENTROPY_CONTEXT * tl , int mi_row , int mi_col ) { int k ; MACROBLOCKD * xd = & x -> e_mbd ; struct macroblockd_plane * const pd = & xd -> plane [ 0 ] ; struct macroblock_plane * const p = & x -> plane [ 0 ] ; MODE_INFO * const mi = xd -> mi [ 0 ] ; const BLOCK_SIZE plane_bsize = get_plane_block_size ( mi -> mbmi . sb_type , pd ) ; const int width = 4 * num_4x4_blocks_wide_lookup [ plane_bsize ] ; const int height = 4 * num_4x4_blocks_high_lookup [ plane_bsize ] ; int idx , idy ; <S2SV_StartBug> const uint8_t * const src = & p -> src . buf [ raster_block_offset ( BLOCK_8X8 , i , <S2SV_EndBug> p -> src . stride ) ] ; <S2SV_StartBug> uint8_t * const dst = & pd -> dst . buf [ raster_block_offset ( BLOCK_8X8 , i , <S2SV_EndBug> pd -> dst . stride ) ] ; int64_t thisdistortion = 0 , thissse = 0 ; int thisrate = 0 , ref ; const scan_order * so = & vp9_default_scan_orders [ TX_4X4 ] ; const int is_compound = has_second_ref ( & mi -> mbmi ) ; <S2SV_StartBug> const InterpKernel * kernel = vp9_get_interp_kernel ( mi -> mbmi . interp_filter ) ; <S2SV_EndBug> for ( ref = 0 ; ref < 1 + is_compound ; ++ ref ) { <S2SV_StartBug> const uint8_t * pre = & pd -> pre [ ref ] . buf [ raster_block_offset ( BLOCK_8X8 , i , <S2SV_EndBug> pd -> pre [ ref ] . stride ) ] ; <S2SV_StartBug> vp9_build_inter_predictor ( pre , pd -> pre [ ref ] . stride , <S2SV_EndBug> dst , pd -> dst . stride , & mi -> bmi [ i ] . as_mv [ ref ] . as_mv , <S2SV_StartBug> & xd -> block_refs [ ref ] -> sf , width , height , ref , <S2SV_EndBug> kernel , MV_PRECISION_Q3 , mi_col * MI_SIZE + 4 * ( i % 2 ) , <S2SV_StartBug> mi_row * MI_SIZE + 4 * ( i / 2 ) ) ; <S2SV_EndBug> } <S2SV_StartBug> vp9_subtract_block ( height , width , <S2SV_EndBug> raster_block_offset_int16 ( BLOCK_8X8 , i , p -> src_diff ) , 8 , src , p -> src . stride , <S2SV_StartBug> dst , pd -> dst . stride ) ; <S2SV_EndBug> k = i ; for ( idy = 0 ; idy < height / 4 ; ++ idy ) { for ( idx = 0 ; idx < width / 4 ; ++ idx ) { int64_t ssz , rd , rd1 , rd2 ; <S2SV_StartBug> int16_t * coeff ; <S2SV_EndBug> k += ( idy * 2 + idx ) ; coeff = BLOCK_OFFSET ( p -> coeff , k ) ; <S2SV_StartBug> x -> fwd_txm4x4 ( raster_block_offset_int16 ( BLOCK_8X8 , k , p -> src_diff ) , <S2SV_EndBug> coeff , 8 ) ; <S2SV_StartBug> vp9_regular_quantize_b_4x4 ( x , 0 , k , so -> scan , so -> iscan ) ; <S2SV_EndBug> thisdistortion += vp9_block_error ( coeff , BLOCK_OFFSET ( pd -> dqcoeff , k ) , 16 , & ssz ) ; <S2SV_StartBug> thissse += ssz ; <S2SV_EndBug> thisrate += cost_coeffs ( x , 0 , k , ta + ( k & 1 ) , tl + ( k >> 1 ) , TX_4X4 , so -> scan , so -> neighbors , cpi -> sf . use_fast_coef_costing ) ; rd1 = RDCOST ( x -> rdmult , x -> rddiv , thisrate , thisdistortion >> 2 ) ; rd2 = RDCOST ( x -> rdmult , x -> rddiv , 0 , thissse >> 2 ) ; rd = MIN ( rd1 , rd2 ) ; if ( rd >= best_yrd ) return INT64_MAX ; } } * distortion = thisdistortion >> 2 ; * labelyrate = thisrate ; * sse = thissse >> 2 ; return RDCOST ( x -> rdmult , x -> rddiv , * labelyrate , * distortion ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . buf [ vp9_raster_block_offset <S2SV_ModEnd> ( BLOCK_8X8 , <S2SV_ModStart> . buf [ vp9_raster_block_offset <S2SV_ModEnd> ( BLOCK_8X8 , <S2SV_ModStart> * kernel = vp9_filter_kernels [ <S2SV_ModEnd> mi -> mbmi <S2SV_ModStart> mbmi . interp_filter ] <S2SV_ModEnd> ; for ( <S2SV_ModStart> . buf [ vp9_raster_block_offset <S2SV_ModEnd> ( BLOCK_8X8 , <S2SV_ModStart> ) ] ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { vp9_highbd_build_inter_predictor <S2SV_ModEnd> ( pre , <S2SV_ModStart> , height , ref , <S2SV_ModEnd> kernel , MV_PRECISION_Q3 <S2SV_ModStart> / 2 ) , xd -> bd <S2SV_ModStart> ) ; } else { vp9_build_inter_predictor ( pre , pd -> pre [ ref ] . stride , dst , pd -> dst . stride , & mi -> bmi [ i ] . as_mv [ ref ] . as_mv , & xd -> block_refs [ ref ] -> sf , width , height , ref , kernel , MV_PRECISION_Q3 , mi_col * MI_SIZE + 4 * ( i % 2 ) , mi_row * MI_SIZE + 4 * ( i / 2 ) ) ; } # else vp9_build_inter_predictor ( pre , pd -> pre [ ref ] . stride , dst , pd -> dst . stride , & mi -> bmi [ i ] . as_mv [ ref ] . as_mv , & xd -> block_refs [ ref ] -> sf , width , height , ref , kernel , MV_PRECISION_Q3 , mi_col * MI_SIZE + 4 * ( i % 2 ) , mi_row * MI_SIZE + 4 * ( i / 2 ) ) ; # endif } # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { vpx_highbd_subtract_block ( height , width , vp9_raster_block_offset_int16 <S2SV_ModEnd> ( BLOCK_8X8 , <S2SV_ModStart> . stride , dst , pd -> dst . stride , xd -> bd ) ; } else { vpx_subtract_block ( height , width , vp9_raster_block_offset_int16 ( BLOCK_8X8 , i , p -> src_diff ) , 8 , src , p -> src . stride , dst , pd -> dst . stride ) ; } # else vpx_subtract_block ( height , width , vp9_raster_block_offset_int16 ( BLOCK_8X8 , i , p -> src_diff ) , 8 , src , p -> src . stride , dst , pd -> dst . stride ) ; # endif <S2SV_ModEnd> k = i <S2SV_ModStart> , rd2 ; tran_low_t <S2SV_ModEnd> * coeff ; <S2SV_ModStart> -> fwd_txm4x4 ( vp9_raster_block_offset_int16 <S2SV_ModEnd> ( BLOCK_8X8 , <S2SV_ModStart> iscan ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { thisdistortion += vp9_highbd_block_error ( coeff , BLOCK_OFFSET ( pd -> dqcoeff , k ) , 16 , & ssz , xd -> bd ) ; } else { <S2SV_ModStart> ssz ) ; } # else thisdistortion += vp9_block_error ( coeff , BLOCK_OFFSET ( pd -> dqcoeff , k ) , 16 , & ssz ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20807\n\n```\nCWE-78 int check_restricted ( void ) { if ( restricted ) { <S2SV_StartBug> emsg ( _ ( \"E145:<S2SV_blank>Shell<S2SV_blank>commands<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>in<S2SV_blank>rvim\" ) ) ; <S2SV_EndBug> return TRUE ; } return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( _ ( \"E145:<S2SV_blank>Shell<S2SV_blank>commands<S2SV_blank>and<S2SV_blank>some<S2SV_blank>functionality<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>in<S2SV_blank>rvim\" <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int caif_seqpkt_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sk_buff * skb ; int ret ; int copylen ; ret = - EOPNOTSUPP ; if ( m -> msg_flags & MSG_OOB ) <S2SV_StartBug> goto read_error ; <S2SV_EndBug> m -> msg_namelen = 0 ; skb = skb_recv_datagram ( sk , flags , 0 , & ret ) ; if ( ! skb ) goto read_error ; copylen = skb -> len ; if ( len < copylen ) { m -> msg_flags |= MSG_TRUNC ; copylen = len ; } ret = skb_copy_datagram_iovec ( skb , 0 , m -> msg_iov , copylen ) ; if ( ret ) goto out_free ; ret = ( flags & MSG_TRUNC ) ? skb -> len : copylen ; out_free : skb_free_datagram ( sk , skb ) ; caif_check_flow_release ( sk ) ; return ret ; read_error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto read_error <S2SV_ModEnd> ; skb =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_loop_filter_init ( VP9_COMMON * cm ) { loop_filter_info_n * lfi = & cm -> lf_info ; struct loopfilter * lf = & cm -> lf ; int lvl ; update_sharpness ( lfi , lf -> sharpness_level ) ; lf -> last_sharpness_level = lf -> sharpness_level ; for ( lvl = 0 ; lvl <= MAX_LOOP_FILTER ; lvl ++ ) <S2SV_StartBug> vpx_memset ( lfi -> lfthr [ lvl ] . hev_thr , ( lvl >> 4 ) , SIMD_WIDTH ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lvl ++ ) memset <S2SV_ModEnd> ( lfi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7396\n\n```\nCWE-399 static Image * ReadSIXELImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char * sixel_buffer ; Image * image ; MagickBooleanType status ; register char * p ; register ssize_t x ; register Quantum * q ; size_t length ; ssize_t i , j , y ; unsigned char * sixel_pixels , * sixel_palette ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = MagickPathExtent ; sixel_buffer = ( char * ) AcquireQuantumMemory ( ( size_t ) length + MagickPathExtent , sizeof ( * sixel_buffer ) ) ; p = sixel_buffer ; if ( sixel_buffer != ( char * ) NULL ) while ( ReadBlobString ( image , p ) != ( char * ) NULL ) { if ( ( * p == '#' ) && ( ( p == sixel_buffer ) || ( * ( p - 1 ) == '\\\\n' ) ) ) continue ; if ( ( * p == '}' ) && ( * ( p + 1 ) == ';' ) ) break ; p += strlen ( p ) ; if ( ( size_t ) ( p - sixel_buffer + MagickPathExtent + 1 ) < length ) continue ; length <<= 1 ; sixel_buffer = ( char * ) ResizeQuantumMemory ( sixel_buffer , length + MagickPathExtent + 1 , sizeof ( * sixel_buffer ) ) ; if ( sixel_buffer == ( char * ) NULL ) break ; p = sixel_buffer + strlen ( sixel_buffer ) ; } if ( sixel_buffer == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; sixel_buffer [ length ] = '\\\\0' ; if ( sixel_decode ( image , ( unsigned char * ) sixel_buffer , & sixel_pixels , & image -> columns , & image -> rows , & sixel_palette , & image -> colors , exception ) == MagickFalse ) { <S2SV_StartBug> sixel_buffer = ( char * ) RelinquishMagickMemory ( sixel_buffer ) ; <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } sixel_buffer = ( char * ) RelinquishMagickMemory ( sixel_buffer ) ; image -> depth = 24 ; image -> storage_class = PseudoClass ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) { sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels ) ; sixel_palette = ( unsigned char * ) RelinquishMagickMemory ( sixel_palette ) ; return ( DestroyImageList ( image ) ) ; } if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) { sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels ) ; sixel_palette = ( unsigned char * ) RelinquishMagickMemory ( sixel_palette ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; i < ( ssize_t ) image -> colors ; ++ i ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( sixel_palette [ i * 4 + 0 ] ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( sixel_palette [ i * 4 + 1 ] ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( sixel_palette [ i * 4 + 2 ] ) ; } j = 0 ; if ( image_info -> ping == MagickFalse ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { j = ( ssize_t ) sixel_pixels [ y * image -> columns + x ] ; SetPixelIndex ( image , j , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } if ( y < ( ssize_t ) image -> rows ) { sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels ) ; sixel_palette = ( unsigned char * ) RelinquishMagickMemory ( sixel_palette ) ; ThrowReaderException ( CorruptImageError , \"NotEnoughPixelData\" ) ; } } sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels ) ; sixel_palette = ( unsigned char * ) RelinquishMagickMemory ( sixel_palette ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RelinquishMagickMemory ( sixel_buffer ) ; sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9150\n\n```\nCWE-200 <S2SV_StartBug> static void print_bpf_insn ( struct bpf_insn * insn ) <S2SV_EndBug> { u8 class = BPF_CLASS ( insn -> code ) ; if ( class == BPF_ALU || class == BPF_ALU64 ) { if ( BPF_SRC ( insn -> code ) == BPF_X ) verbose ( \"(%02x)<S2SV_blank>%sr%d<S2SV_blank>%s<S2SV_blank>%sr%d\\\\n\" , insn -> code , class == BPF_ALU ? \"(u32)<S2SV_blank>\" : \"\" , insn -> dst_reg , bpf_alu_string [ BPF_OP ( insn -> code ) >> 4 ] , class == BPF_ALU ? \"(u32)<S2SV_blank>\" : \"\" , insn -> src_reg ) ; else verbose ( \"(%02x)<S2SV_blank>%sr%d<S2SV_blank>%s<S2SV_blank>%s%d\\\\n\" , insn -> code , class == BPF_ALU ? \"(u32)<S2SV_blank>\" : \"\" , insn -> dst_reg , bpf_alu_string [ BPF_OP ( insn -> code ) >> 4 ] , class == BPF_ALU ? \"(u32)<S2SV_blank>\" : \"\" , insn -> imm ) ; } else if ( class == BPF_STX ) { if ( BPF_MODE ( insn -> code ) == BPF_MEM ) verbose ( \"(%02x)<S2SV_blank>*(%s<S2SV_blank>*)(r%d<S2SV_blank>%+d)<S2SV_blank>=<S2SV_blank>r%d\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> dst_reg , insn -> off , insn -> src_reg ) ; else if ( BPF_MODE ( insn -> code ) == BPF_XADD ) verbose ( \"(%02x)<S2SV_blank>lock<S2SV_blank>*(%s<S2SV_blank>*)(r%d<S2SV_blank>%+d)<S2SV_blank>+=<S2SV_blank>r%d\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> dst_reg , insn -> off , insn -> src_reg ) ; else verbose ( \"BUG_%02x\\\\n\" , insn -> code ) ; } else if ( class == BPF_ST ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM ) { verbose ( \"BUG_st_%02x\\\\n\" , insn -> code ) ; return ; } verbose ( \"(%02x)<S2SV_blank>*(%s<S2SV_blank>*)(r%d<S2SV_blank>%+d)<S2SV_blank>=<S2SV_blank>%d\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> dst_reg , insn -> off , insn -> imm ) ; } else if ( class == BPF_LDX ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM ) { verbose ( \"BUG_ldx_%02x\\\\n\" , insn -> code ) ; return ; } verbose ( \"(%02x)<S2SV_blank>r%d<S2SV_blank>=<S2SV_blank>*(%s<S2SV_blank>*)(r%d<S2SV_blank>%+d)\\\\n\" , insn -> code , insn -> dst_reg , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> src_reg , insn -> off ) ; } else if ( class == BPF_LD ) { if ( BPF_MODE ( insn -> code ) == BPF_ABS ) { verbose ( \"(%02x)<S2SV_blank>r0<S2SV_blank>=<S2SV_blank>*(%s<S2SV_blank>*)skb[%d]\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> imm ) ; } else if ( BPF_MODE ( insn -> code ) == BPF_IND ) { verbose ( \"(%02x)<S2SV_blank>r0<S2SV_blank>=<S2SV_blank>*(%s<S2SV_blank>*)skb[r%d<S2SV_blank>+<S2SV_blank>%d]\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> src_reg , insn -> imm ) ; <S2SV_StartBug> } else if ( BPF_MODE ( insn -> code ) == BPF_IMM ) { <S2SV_EndBug> verbose ( \"(%02x)<S2SV_blank>r%d<S2SV_blank>=<S2SV_blank>0x%x\\\\n\" , <S2SV_StartBug> insn -> code , insn -> dst_reg , insn -> imm ) ; <S2SV_EndBug> } else { verbose ( \"BUG_ld_%02x\\\\n\" , insn -> code ) ; return ; } } else if ( class == BPF_JMP ) { u8 opcode = BPF_OP ( insn -> code ) ; if ( opcode == BPF_CALL ) { verbose ( \"(%02x)<S2SV_blank>call<S2SV_blank>%s#%d\\\\n\" , insn -> code , func_id_name ( insn -> imm ) , insn -> imm ) ; } else if ( insn -> code == ( BPF_JMP | BPF_JA ) ) { verbose ( \"(%02x)<S2SV_blank>goto<S2SV_blank>pc%+d\\\\n\" , insn -> code , insn -> off ) ; } else if ( insn -> code == ( BPF_JMP | BPF_EXIT ) ) { verbose ( \"(%02x)<S2SV_blank>exit\\\\n\" , insn -> code ) ; } else if ( BPF_SRC ( insn -> code ) == BPF_X ) { verbose ( \"(%02x)<S2SV_blank>if<S2SV_blank>r%d<S2SV_blank>%s<S2SV_blank>r%d<S2SV_blank>goto<S2SV_blank>pc%+d\\\\n\" , insn -> code , insn -> dst_reg , bpf_jmp_string [ BPF_OP ( insn -> code ) >> 4 ] , insn -> src_reg , insn -> off ) ; } else { verbose ( \"(%02x)<S2SV_blank>if<S2SV_blank>r%d<S2SV_blank>%s<S2SV_blank>0x%x<S2SV_blank>goto<S2SV_blank>pc%+d\\\\n\" , insn -> code , insn -> dst_reg , bpf_jmp_string [ BPF_OP ( insn -> code ) >> 4 ] , insn -> imm , insn -> off ) ; } } else { verbose ( \"(%02x)<S2SV_blank>%s\\\\n\" , insn -> code , bpf_class_string [ class ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void print_bpf_insn ( const struct bpf_verifier_env * env , const <S2SV_ModStart> ) == BPF_IMM && BPF_SIZE ( insn -> code ) == BPF_DW ) { u64 imm = ( ( u64 ) ( insn + 1 ) -> imm << 32 ) | ( u32 ) insn -> imm ; bool map_ptr = insn -> src_reg == BPF_PSEUDO_MAP_FD ; if ( map_ptr && ! env -> allow_ptr_leaks ) imm = 0 ; verbose ( \"(%02x)<S2SV_blank>r%d<S2SV_blank>=<S2SV_blank>0x%llx\\\\n\" , insn -> code , <S2SV_ModEnd> insn -> dst_reg <S2SV_ModStart> -> dst_reg , ( unsigned long long ) <S2SV_ModEnd> imm ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static INLINE void read_mv ( vp9_reader * r , MV * mv , const MV * ref , <S2SV_EndBug> const nmv_context * ctx , nmv_context_counts * counts , int allow_hp ) { const MV_JOINT_TYPE joint_type = <S2SV_StartBug> ( MV_JOINT_TYPE ) vp9_read_tree ( r , vp9_mv_joint_tree , ctx -> joints ) ; <S2SV_EndBug> const int use_hp = allow_hp && vp9_use_mv_hp ( ref ) ; MV diff = { 0 , 0 } ; if ( mv_joint_vertical ( joint_type ) ) diff . row = read_mv_component ( r , & ctx -> comps [ 0 ] , use_hp ) ; if ( mv_joint_horizontal ( joint_type ) ) diff . col = read_mv_component ( r , & ctx -> comps [ 1 ] , use_hp ) ; vp9_inc_mv ( & diff , counts ) ; mv -> row = ref -> row + diff . row ; mv -> col = ref -> col + diff . col ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void read_mv ( vpx_reader <S2SV_ModEnd> * r , <S2SV_ModStart> ( MV_JOINT_TYPE ) vpx_read_tree <S2SV_ModEnd> ( r ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10746\n\n```\nCWE-254 int virDomainGetTime ( virDomainPtr dom , long long * seconds , unsigned int * nseconds , unsigned int flags ) { VIR_DOMAIN_DEBUG ( dom , \"seconds=%p,<S2SV_blank>nseconds=%p,<S2SV_blank>flags=%x\" , seconds , nseconds , flags ) ; virResetLastError ( ) ; <S2SV_StartBug> virCheckDomainReturn ( dom , - 1 ) ; <S2SV_EndBug> if ( dom -> conn -> driver -> domainGetTime ) { int ret = dom -> conn -> driver -> domainGetTime ( dom , seconds , nseconds , flags ) ; if ( ret < 0 ) goto error ; return ret ; } virReportUnsupportedError ( ) ; error : virDispatchError ( dom -> conn ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , - 1 ) ; virCheckReadOnlyGoto ( dom -> conn -> flags , error\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11384\n\n```\nCWE-125 static int sh_op ( RAnal * anal , RAnalOp * op , ut64 addr , const ut8 * data , int len ) { ut8 op_MSB , op_LSB ; int ret ; <S2SV_StartBug> if ( ! data ) <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> memset ( op , '\\\\0' , sizeof ( RAnalOp ) ) ; op -> addr = addr ; op -> type = R_ANAL_OP_TYPE_UNK ; op -> jump = op -> fail = - 1 ; op -> ptr = op -> val = - 1 ; op -> size = 2 ; op_MSB = anal -> big_endian ? data [ 0 ] : data [ 1 ] ; op_LSB = anal -> big_endian ? data [ 1 ] : data [ 0 ] ; ret = first_nibble_decode [ ( op_MSB >> 4 ) & 0x0F ] ( anal , op , ( ut16 ) ( op_MSB << 8 | op_LSB ) ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! data || len < 2 ) { <S2SV_ModEnd> return 0 ; <S2SV_ModStart> return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 int cib_remote_msg ( gpointer data ) { <S2SV_StartBug> const char * value = NULL ; <S2SV_EndBug> xmlNode * command = NULL ; <S2SV_StartBug> cib_client_t * client = data ; <S2SV_EndBug> crm_trace ( \"%s<S2SV_blank>callback\" , client -> encrypted ? \"secure\" : \"clear-text\" ) ; <S2SV_StartBug> command = crm_recv_remote_msg ( client -> session , client -> encrypted ) ; <S2SV_EndBug> if ( command == NULL ) { return - 1 ; } <S2SV_StartBug> value = crm_element_name ( command ) ; <S2SV_EndBug> if ( safe_str_neq ( value , \"cib_command\" ) ) { crm_log_xml_trace ( command , \"Bad<S2SV_blank>command:<S2SV_blank>\" ) ; goto bail ; } if ( client -> name == NULL ) { value = crm_element_value ( command , F_CLIENTNAME ) ; if ( value == NULL ) { client -> name = strdup ( client -> id ) ; } else { client -> name = strdup ( value ) ; } } if ( client -> callback_id == NULL ) { value = crm_element_value ( command , F_CIB_CALLBACK_TOKEN ) ; if ( value != NULL ) { client -> callback_id = strdup ( value ) ; crm_trace ( \"Callback<S2SV_blank>channel<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>%s\" , client -> id , client -> callback_id ) ; } else { client -> callback_id = strdup ( client -> id ) ; } } xml_remove_prop ( command , F_ORIG ) ; xml_remove_prop ( command , F_CIB_HOST ) ; xml_remove_prop ( command , F_CIB_GLOBAL_UPDATE ) ; crm_xml_add ( command , F_TYPE , T_CIB ) ; crm_xml_add ( command , F_CIB_CLIENTID , client -> id ) ; crm_xml_add ( command , F_CIB_CLIENTNAME , client -> name ) ; # if ENABLE_ACL <S2SV_StartBug> crm_xml_add ( command , F_CIB_USER , client -> user ) ; <S2SV_EndBug> # endif if ( crm_element_value ( command , F_CIB_CALLID ) == NULL ) { char * call_uuid = crm_generate_uuid ( ) ; <S2SV_StartBug> crm_xml_add ( command , F_CIB_CALLID , call_uuid ) ; <S2SV_EndBug> free ( call_uuid ) ; } if ( crm_element_value ( command , F_CIB_CALLOPTS ) == NULL ) { crm_xml_add_int ( command , F_CIB_CALLOPTS , 0 ) ; } crm_log_xml_trace ( command , \"Remote<S2SV_blank>command:<S2SV_blank>\" ) ; cib_common_callback_worker ( 0 , 0 , command , client , TRUE ) ; bail : free_xml ( command ) ; command = NULL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { <S2SV_ModEnd> xmlNode * command <S2SV_ModStart> client = data ; int disconnected = 0 ; int timeout = client -> remote_auth ? - 1 : 1000 <S2SV_ModStart> \"clear-text\" ) ; # ifdef HAVE_GNUTLS_GNUTLS_H if ( client -> encrypted && ( client -> handshake_complete == FALSE ) ) { int rc = 0 ; do { rc = gnutls_handshake ( * <S2SV_ModEnd> client -> session <S2SV_ModStart> client -> session ) ; if ( rc < 0 && rc != GNUTLS_E_AGAIN ) { crm_err ( \"Remote<S2SV_blank>cib<S2SV_blank>tls<S2SV_blank>handshake<S2SV_blank>failed\" ) ; <S2SV_ModEnd> return - 1 <S2SV_ModStart> 1 ; } } while ( rc == GNUTLS_E_INTERRUPTED ) ; if ( rc == 0 ) { crm_debug ( \"Remote<S2SV_blank>cib<S2SV_blank>tls<S2SV_blank>handshake<S2SV_blank>completed\" ) ; client -> handshake_complete = TRUE ; if ( client -> remote_auth_timeout ) { g_source_remove ( client -> remote_auth_timeout ) ; } client -> remote_auth_timeout = g_timeout_add ( REMOTE_AUTH_TIMEOUT , remote_auth_timeout_cb , client ) ; } return 0 ; } # endif crm_recv_remote_msg ( client -> session , & client -> recv_buf , client -> encrypted , timeout , & disconnected ) ; if ( client -> remote_auth == FALSE ) { xmlNode * reg <S2SV_ModEnd> ; # if <S2SV_ModStart> # if ENABLE_ACL const char * user = NULL ; # endif command = crm_parse_remote_buffer ( & client -> recv_buf ) ; if ( cib_remote_auth ( command ) == FALSE ) { free_xml ( command ) ; return - 1 ; } crm_debug ( \"remote<S2SV_blank>connection<S2SV_blank>authenticated<S2SV_blank>successfully\" ) ; client -> remote_auth = TRUE ; g_source_remove ( client -> remote_auth_timeout ) ; client -> remote_auth_timeout = 0 ; client -> name = crm_element_value_copy ( command , \"name\" ) ; # if ENABLE_ACL user = crm_element_value ( command , \"user\" ) ; if ( user ) { new_client -> user = strdup ( user ) ; } # endif reg = create_xml_node ( NULL , \"cib_result\" <S2SV_ModEnd> ) ; crm_xml_add <S2SV_ModStart> ; crm_xml_add ( reg , F_CIB_OPERATION , CRM_OP_REGISTER ) ; crm_xml_add ( reg , F_CIB_CLIENTID , client -> id ) ; crm_send_remote_msg ( client -> session , reg , client -> encrypted ) ; free_xml ( reg ) ; free_xml ( command ) ; } command = crm_parse_remote_buffer ( & client -> recv_buf ) ; while ( command ) { crm_trace ( \"command<S2SV_blank>received\" ) ; cib_handle_remote_msg ( client , command ) ; free_xml ( command ) ; command = crm_parse_remote_buffer ( & client -> recv_buf ) ; } if ( disconnected ) { crm_trace ( \"disconnected<S2SV_blank>while<S2SV_blank>receiving<S2SV_blank>remote<S2SV_blank>cib<S2SV_blank>msg.\" ) ; return - 1 ; } return <S2SV_ModEnd> 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20406\n\n```\nCWE-190 static int PyMemoTable_Set ( PyMemoTable * self , PyObject * key , Py_ssize_t value ) { PyMemoEntry * entry ; assert ( key != NULL ) ; entry = _PyMemoTable_Lookup ( self , key ) ; if ( entry -> me_key != NULL ) { entry -> me_value = value ; return 0 ; } Py_INCREF ( key ) ; entry -> me_key = key ; entry -> me_value = value ; self -> mt_used ++ ; <S2SV_StartBug> if ( ! ( self -> mt_used * 3 >= ( self -> mt_mask + 1 ) * 2 ) ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> return _PyMemoTable_ResizeTable ( self , <S2SV_EndBug> <S2SV_StartBug> ( self -> mt_used > 50000 ? 2 : 4 ) * self -> mt_used ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( SIZE_MAX / 3 >= self -> mt_used && <S2SV_ModEnd> self -> mt_used <S2SV_ModStart> mt_used * 3 < self -> mt_allocated <S2SV_ModEnd> * 2 ) <S2SV_ModStart> * 2 ) { <S2SV_ModEnd> return 0 ; <S2SV_ModStart> return 0 ; } size_t desired_size = <S2SV_ModEnd> ( self -> <S2SV_ModStart> self -> mt_used ; return _PyMemoTable_ResizeTable ( self , desired_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010297\n\n```\nCWE-119 TEE_Result syscall_obj_generate_key ( unsigned long obj , unsigned long key_size , const struct utee_attribute * usr_params , unsigned long param_count ) { TEE_Result res ; struct tee_ta_session * sess ; const struct tee_cryp_obj_type_props * type_props ; struct tee_obj * o ; struct tee_cryp_obj_secret * key ; size_t byte_size ; TEE_Attribute * params = NULL ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_obj_get ( to_user_ta_ctx ( sess -> ctx ) , tee_svc_uref_to_vaddr ( obj ) , & o ) ; if ( res != TEE_SUCCESS ) return res ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_PERSISTENT ) != 0 ) return TEE_ERROR_BAD_STATE ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_INITIALIZED ) != 0 ) return TEE_ERROR_BAD_STATE ; type_props = tee_svc_find_type_props ( o -> info . objectType ) ; if ( ! type_props ) return TEE_ERROR_NOT_SUPPORTED ; if ( key_size % type_props -> quanta != 0 ) return TEE_ERROR_NOT_SUPPORTED ; if ( key_size < type_props -> min_size ) return TEE_ERROR_NOT_SUPPORTED ; if ( key_size > type_props -> max_size ) return TEE_ERROR_NOT_SUPPORTED ; <S2SV_StartBug> params = malloc ( sizeof ( TEE_Attribute ) * param_count ) ; <S2SV_EndBug> if ( ! params ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( to_user_ta_ctx ( sess -> ctx ) , usr_params , param_count , params ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_svc_cryp_check_attr ( ATTR_USAGE_GENERATE_KEY , type_props , params , param_count ) ; if ( res != TEE_SUCCESS ) goto out ; switch ( o -> info . objectType ) { case TEE_TYPE_AES : case TEE_TYPE_DES : case TEE_TYPE_DES3 : case TEE_TYPE_HMAC_MD5 : case TEE_TYPE_HMAC_SHA1 : case TEE_TYPE_HMAC_SHA224 : case TEE_TYPE_HMAC_SHA256 : case TEE_TYPE_HMAC_SHA384 : case TEE_TYPE_HMAC_SHA512 : case TEE_TYPE_GENERIC_SECRET : byte_size = key_size / 8 ; if ( o -> info . objectType == TEE_TYPE_DES || o -> info . objectType == TEE_TYPE_DES3 ) { byte_size = ( key_size + key_size / 7 ) / 8 ; } key = ( struct tee_cryp_obj_secret * ) o -> attr ; if ( byte_size > key -> alloc_size ) { res = TEE_ERROR_EXCESS_DATA ; goto out ; } res = crypto_rng_read ( ( void * ) ( key + 1 ) , byte_size ) ; if ( res != TEE_SUCCESS ) goto out ; key -> key_size = byte_size ; o -> have_attrs = ( 1 << type_props -> num_type_attrs ) - 1 ; break ; case TEE_TYPE_RSA_KEYPAIR : res = tee_svc_obj_generate_key_rsa ( o , type_props , key_size , params , param_count ) ; if ( res != TEE_SUCCESS ) goto out ; break ; case TEE_TYPE_DSA_KEYPAIR : res = tee_svc_obj_generate_key_dsa ( o , type_props , key_size ) ; if ( res != TEE_SUCCESS ) goto out ; break ; case TEE_TYPE_DH_KEYPAIR : res = tee_svc_obj_generate_key_dh ( o , type_props , key_size , params , param_count ) ; if ( res != TEE_SUCCESS ) goto out ; break ; case TEE_TYPE_ECDSA_KEYPAIR : case TEE_TYPE_ECDH_KEYPAIR : res = tee_svc_obj_generate_key_ecc ( o , type_props , key_size , params , param_count ) ; if ( res != TEE_SUCCESS ) goto out ; break ; default : res = TEE_ERROR_BAD_FORMAT ; } out : free ( params ) ; if ( res == TEE_SUCCESS ) { o -> info . keySize = key_size ; o -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return TEE_ERROR_NOT_SUPPORTED ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , param_count , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_encode_frame ( VP8_COMP * cpi ) { int mb_row ; MACROBLOCK * const x = & cpi -> mb ; VP8_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & x -> e_mbd ; TOKENEXTRA * tp = cpi -> tok ; int segment_counts [ MAX_MB_SEGMENTS ] ; int totalrate ; # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING BOOL_CODER * bc = & cpi -> bc [ 1 ] ; const int num_part = ( 1 << cm -> multi_token_partition ) ; # endif <S2SV_StartBug> vpx_memset ( segment_counts , 0 , sizeof ( segment_counts ) ) ; <S2SV_EndBug> totalrate = 0 ; if ( cpi -> compressor_speed == 2 ) { if ( cpi -> oxcf . cpu_used < 0 ) cpi -> Speed = - ( cpi -> oxcf . cpu_used ) ; else vp8_auto_select_speed ( cpi ) ; } if ( ! cm -> use_bilinear_mc_filter ) { xd -> subpixel_predict = vp8_sixtap_predict4x4 ; xd -> subpixel_predict8x4 = vp8_sixtap_predict8x4 ; xd -> subpixel_predict8x8 = vp8_sixtap_predict8x8 ; xd -> subpixel_predict16x16 = vp8_sixtap_predict16x16 ; } else { xd -> subpixel_predict = vp8_bilinear_predict4x4 ; xd -> subpixel_predict8x4 = vp8_bilinear_predict8x4 ; xd -> subpixel_predict8x8 = vp8_bilinear_predict8x8 ; xd -> subpixel_predict16x16 = vp8_bilinear_predict16x16 ; } cpi -> mb . skip_true_count = 0 ; cpi -> tok_count = 0 ; # if 0 cpi -> frame_distortion = 0 ; cpi -> last_mb_distortion = 0 ; # endif xd -> mode_info_context = cm -> mi ; vp8_zero ( cpi -> mb . MVcount ) ; vp8cx_frame_init_quantizer ( cpi ) ; vp8_initialize_rd_consts ( cpi , x , vp8_dc_quant ( cm -> base_qindex , cm -> y1dc_delta_q ) ) ; vp8cx_initialize_me_consts ( cpi , cm -> base_qindex ) ; if ( cpi -> oxcf . tuning == VP8_TUNE_SSIM ) { init_encode_frame_mb_context ( cpi ) ; build_activity_map ( cpi ) ; } init_encode_frame_mb_context ( cpi ) ; # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING { int i ; for ( i = 0 ; i < num_part ; i ++ ) { vp8_start_encode ( & bc [ i ] , cpi -> partition_d [ i + 1 ] , cpi -> partition_d_end [ i + 1 ] ) ; bc [ i ] . error = & cm -> error ; } } # endif { struct vpx_usec_timer emr_timer ; vpx_usec_timer_start ( & emr_timer ) ; # if CONFIG_MULTITHREAD if ( cpi -> b_multi_threaded ) { int i ; vp8cx_init_mbrthread_data ( cpi , x , cpi -> mb_row_ei , cpi -> encoding_thread_count ) ; for ( i = 0 ; i < cm -> mb_rows ; i ++ ) cpi -> mt_current_mb_col [ i ] = - 1 ; for ( i = 0 ; i < cpi -> encoding_thread_count ; i ++ ) { sem_post ( & cpi -> h_event_start_encoding [ i ] ) ; } for ( mb_row = 0 ; mb_row < cm -> mb_rows ; mb_row += ( cpi -> encoding_thread_count + 1 ) ) { vp8_zero ( cm -> left_context ) # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING tp = cpi -> tok ; # else tp = cpi -> tok + mb_row * ( cm -> mb_cols * 16 * 24 ) ; # endif encode_mb_row ( cpi , cm , mb_row , x , xd , & tp , segment_counts , & totalrate ) ; x -> src . y_buffer += 16 * x -> src . y_stride * ( cpi -> encoding_thread_count + 1 ) - 16 * cm -> mb_cols ; x -> src . u_buffer += 8 * x -> src . uv_stride * ( cpi -> encoding_thread_count + 1 ) - 8 * cm -> mb_cols ; x -> src . v_buffer += 8 * x -> src . uv_stride * ( cpi -> encoding_thread_count + 1 ) - 8 * cm -> mb_cols ; xd -> mode_info_context += xd -> mode_info_stride * cpi -> encoding_thread_count ; x -> partition_info += xd -> mode_info_stride * cpi -> encoding_thread_count ; x -> gf_active_ptr += cm -> mb_cols * cpi -> encoding_thread_count ; if ( mb_row == cm -> mb_rows - 1 ) { sem_post ( & cpi -> h_event_end_encoding ) ; } } sem_wait ( & cpi -> h_event_end_encoding ) ; for ( mb_row = 0 ; mb_row < cm -> mb_rows ; mb_row ++ ) { cpi -> tok_count += ( unsigned int ) ( cpi -> tplist [ mb_row ] . stop - cpi -> tplist [ mb_row ] . start ) ; } if ( xd -> segmentation_enabled ) { int j ; if ( xd -> segmentation_enabled ) { for ( i = 0 ; i < cpi -> encoding_thread_count ; i ++ ) { for ( j = 0 ; j < 4 ; j ++ ) segment_counts [ j ] += cpi -> mb_row_ei [ i ] . segment_counts [ j ] ; } } } for ( i = 0 ; i < cpi -> encoding_thread_count ; i ++ ) { int mode_count ; int c_idx ; totalrate += cpi -> mb_row_ei [ i ] . totalrate ; cpi -> mb . skip_true_count += cpi -> mb_row_ei [ i ] . mb . skip_true_count ; for ( mode_count = 0 ; mode_count < VP8_YMODES ; mode_count ++ ) cpi -> mb . ymode_count [ mode_count ] += cpi -> mb_row_ei [ i ] . mb . ymode_count [ mode_count ] ; for ( mode_count = 0 ; mode_count < VP8_UV_MODES ; mode_count ++ ) cpi -> mb . uv_mode_count [ mode_count ] += cpi -> mb_row_ei [ i ] . mb . uv_mode_count [ mode_count ] ; for ( c_idx = 0 ; c_idx < MVvals ; c_idx ++ ) { cpi -> mb . MVcount [ 0 ] [ c_idx ] += cpi -> mb_row_ei [ i ] . mb . MVcount [ 0 ] [ c_idx ] ; cpi -> mb . MVcount [ 1 ] [ c_idx ] += cpi -> mb_row_ei [ i ] . mb . MVcount [ 1 ] [ c_idx ] ; } cpi -> mb . prediction_error += cpi -> mb_row_ei [ i ] . mb . prediction_error ; cpi -> mb . intra_error += cpi -> mb_row_ei [ i ] . mb . intra_error ; for ( c_idx = 0 ; c_idx < MAX_REF_FRAMES ; c_idx ++ ) cpi -> mb . count_mb_ref_frame_usage [ c_idx ] += cpi -> mb_row_ei [ i ] . mb . count_mb_ref_frame_usage [ c_idx ] ; for ( c_idx = 0 ; c_idx < MAX_ERROR_BINS ; c_idx ++ ) cpi -> mb . error_bins [ c_idx ] += cpi -> mb_row_ei [ i ] . mb . error_bins [ c_idx ] ; sum_coef_counts ( x , & cpi -> mb_row_ei [ i ] . mb ) ; } } else # endif { for ( mb_row = 0 ; mb_row < cm -> mb_rows ; mb_row ++ ) { vp8_zero ( cm -> left_context ) # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING tp = cpi -> tok ; # endif encode_mb_row ( cpi , cm , mb_row , x , xd , & tp , segment_counts , & totalrate ) ; x -> src . y_buffer += 16 * x -> src . y_stride - 16 * cm -> mb_cols ; x -> src . u_buffer += 8 * x -> src . uv_stride - 8 * cm -> mb_cols ; x -> src . v_buffer += 8 * x -> src . uv_stride - 8 * cm -> mb_cols ; } cpi -> tok_count = ( unsigned int ) ( tp - cpi -> tok ) ; } # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING { int i ; for ( i = 0 ; i < num_part ; i ++ ) { vp8_stop_encode ( & bc [ i ] ) ; cpi -> partition_sz [ i + 1 ] = bc [ i ] . pos ; } } # endif vpx_usec_timer_mark ( & emr_timer ) ; cpi -> time_encode_mb_row += vpx_usec_timer_elapsed ( & emr_timer ) ; } if ( xd -> segmentation_enabled && xd -> update_mb_segmentation_map ) { int tot_count ; int i ; <S2SV_StartBug> vpx_memset ( xd -> mb_segment_tree_probs , 255 , sizeof ( xd -> mb_segment_tree_probs ) ) ; <S2SV_EndBug> tot_count = segment_counts [ 0 ] + segment_counts [ 1 ] + segment_counts [ 2 ] + segment_counts [ 3 ] ; if ( tot_count ) { xd -> mb_segment_tree_probs [ 0 ] = ( ( segment_counts [ 0 ] + segment_counts [ 1 ] ) * 255 ) / tot_count ; tot_count = segment_counts [ 0 ] + segment_counts [ 1 ] ; if ( tot_count > 0 ) { xd -> mb_segment_tree_probs [ 1 ] = ( segment_counts [ 0 ] * 255 ) / tot_count ; } tot_count = segment_counts [ 2 ] + segment_counts [ 3 ] ; if ( tot_count > 0 ) xd -> mb_segment_tree_probs [ 2 ] = ( segment_counts [ 2 ] * 255 ) / tot_count ; for ( i = 0 ; i < MB_FEATURE_TREE_PROBS ; i ++ ) { if ( xd -> mb_segment_tree_probs [ i ] == 0 ) xd -> mb_segment_tree_probs [ i ] = 1 ; } } } cpi -> projected_frame_size = totalrate >> 8 ; if ( cm -> frame_type == KEY_FRAME ) { cpi -> this_frame_percent_intra = 100 ; } else { int tot_modes ; tot_modes = cpi -> mb . count_mb_ref_frame_usage [ INTRA_FRAME ] + cpi -> mb . count_mb_ref_frame_usage [ LAST_FRAME ] + cpi -> mb . count_mb_ref_frame_usage [ GOLDEN_FRAME ] + cpi -> mb . count_mb_ref_frame_usage [ ALTREF_FRAME ] ; if ( tot_modes ) cpi -> this_frame_percent_intra = cpi -> mb . count_mb_ref_frame_usage [ INTRA_FRAME ] * 100 / tot_modes ; } # if ! CONFIG_REALTIME_ONLY if ( ( cm -> frame_type != KEY_FRAME ) && ( ( cpi -> oxcf . number_of_layers > 1 ) || ( ! cm -> refresh_alt_ref_frame && ! cm -> refresh_golden_frame ) ) ) { vp8_convert_rfct_to_prob ( cpi ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif memset <S2SV_ModEnd> ( segment_counts , <S2SV_ModStart> int i ; memset <S2SV_ModEnd> ( xd ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3178\n\n```\nCWE-125 int main ( int argc , char * * argv ) { const char command0 [ ] = { 0x00 , 0x00 } ; char command1 [ ] = \"\\\\x01\\\\x00urn:schemas-upnp-org:device:InternetGatewayDevice\" ; char command2 [ ] = \"\\\\x02\\\\x00uuid:fc4ec57e-b051-11db-88f8-0060085db3f6::upnp:rootdevice\" ; const char command3 [ ] = { 0x03 , 0x00 } ; char command3compat [ ] = \"\\\\x03\\\\x00ssdp:all\" ; char command4 [ ] = \"\\\\x04\\\\x00test:test:test\" ; const char bad_command [ ] = { 0xff , 0xff } ; const char overflow [ ] = { 0x01 , 0xff , 0xff , 0xff , 0xff , 0xff , 0xff , 0xff } ; <S2SV_StartBug> const char command5 [ ] = { 0x05 , 0x00 } ; <S2SV_EndBug> int s ; int i ; void * tmp ; unsigned char * resp = NULL ; size_t respsize = 0 ; unsigned char buf [ 4096 ] ; ssize_t n ; int total = 0 ; const char * sockpath = \"/var/run/minissdpd.sock\" ; for ( i = 0 ; i < argc - 1 ; i ++ ) { if ( 0 == strcmp ( argv [ i ] , \"-s\" ) ) sockpath = argv [ ++ i ] ; } command1 [ 1 ] = sizeof ( command1 ) - 3 ; command2 [ 1 ] = sizeof ( command2 ) - 3 ; command3compat [ 1 ] = sizeof ( command3compat ) - 3 ; command4 [ 1 ] = sizeof ( command4 ) - 3 ; s = connect_unix_socket ( sockpath ) ; n = SENDCOMMAND ( command0 , sizeof ( command0 ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; if ( n > 0 ) { printversion ( buf , n ) ; } else { printf ( \"Command<S2SV_blank>0<S2SV_blank>(get<S2SV_blank>version)<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( command1 , sizeof ( command1 ) - 1 ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( command2 , sizeof ( command2 ) - 1 ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } buf [ 0 ] = 0 ; n = SENDCOMMAND ( command3 , sizeof ( command3 ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; if ( n == 0 ) { printf ( \"command3<S2SV_blank>failed,<S2SV_blank>testing<S2SV_blank>compatible<S2SV_blank>one\\\\n\" ) ; close ( s ) ; s = connect_unix_socket ( sockpath ) ; n = SENDCOMMAND ( command3compat , sizeof ( command3compat ) - 1 ) ; n = read ( s , buf , sizeof ( buf ) ) ; } printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printf ( \"Number<S2SV_blank>of<S2SV_blank>devices<S2SV_blank>%d\\\\n\" , ( int ) buf [ 0 ] ) ; while ( n > 0 ) { tmp = realloc ( resp , respsize + n ) ; if ( tmp == NULL ) { fprintf ( stderr , \"memory<S2SV_blank>allocation<S2SV_blank>error\\\\n\" ) ; break ; } resp = tmp ; respsize += n ; if ( n > 0 ) { memcpy ( resp + total , buf , n ) ; total += n ; } if ( n < ( ssize_t ) sizeof ( buf ) ) { break ; } n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; } if ( resp != NULL ) { printresponse ( resp , total ) ; free ( resp ) ; resp = NULL ; } if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( command4 , sizeof ( command4 ) ) ; n = SENDCOMMAND ( bad_command , sizeof ( bad_command ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( overflow , sizeof ( overflow ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( command5 , sizeof ( command5 ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; <S2SV_StartBug> close ( s ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0x05 , 0x00 } ; const char bad_command4 [ ] = { 0x04 , 0x01 , 0x60 , 0x8f , 0xff , 0xff , 0xff , 0x7f <S2SV_ModStart> n ) ; if ( n == 0 ) { <S2SV_ModStart> s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( bad_command4 , sizeof ( bad_command4 ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; close ( s ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-326 static VALUE ossl_cipher_init ( int argc , VALUE * argv , VALUE self , int mode ) { EVP_CIPHER_CTX * ctx ; unsigned char key [ EVP_MAX_KEY_LENGTH ] , * p_key = NULL ; unsigned char iv [ EVP_MAX_IV_LENGTH ] , * p_iv = NULL ; VALUE pass , init_v ; if ( rb_scan_args ( argc , argv , \"02\" , & pass , & init_v ) > 0 ) { VALUE cname = rb_class_path ( rb_obj_class ( self ) ) ; rb_warn ( \"arguments<S2SV_blank>for<S2SV_blank>%\" PRIsVALUE \"#encrypt<S2SV_blank>and<S2SV_blank>%\" PRIsVALUE \"#decrypt<S2SV_blank>were<S2SV_blank>deprecated;<S2SV_blank>\" \"use<S2SV_blank>%\" PRIsVALUE \"#pkcs5_keyivgen<S2SV_blank>to<S2SV_blank>derive<S2SV_blank>key<S2SV_blank>and<S2SV_blank>IV\" , cname , cname , cname ) ; StringValue ( pass ) ; GetCipher ( self , ctx ) ; if ( NIL_P ( init_v ) ) memcpy ( iv , \"OpenSSL<S2SV_blank>for<S2SV_blank>Ruby<S2SV_blank>rulez!\" , sizeof ( iv ) ) ; else { StringValue ( init_v ) ; if ( EVP_MAX_IV_LENGTH > RSTRING_LEN ( init_v ) ) { memset ( iv , 0 , EVP_MAX_IV_LENGTH ) ; memcpy ( iv , RSTRING_PTR ( init_v ) , RSTRING_LEN ( init_v ) ) ; } else memcpy ( iv , RSTRING_PTR ( init_v ) , sizeof ( iv ) ) ; } EVP_BytesToKey ( EVP_CIPHER_CTX_cipher ( ctx ) , EVP_md5 ( ) , iv , ( unsigned char * ) RSTRING_PTR ( pass ) , RSTRING_LENINT ( pass ) , 1 , key , NULL ) ; p_key = key ; p_iv = iv ; } else { GetCipher ( self , ctx ) ; } if ( EVP_CipherInit_ex ( ctx , NULL , NULL , p_key , p_iv , mode ) != 1 ) { ossl_raise ( eCipherError , NULL ) ; } <S2SV_StartBug> return self ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( p_key ) rb_ivar_set ( self , id_key_set , Qtrue ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static AVFrame * get_video_buffer ( AVFilterLink * inlink , int w , int h ) { PadContext * s = inlink -> dst -> priv ; AVFrame * frame = ff_get_video_buffer ( inlink -> dst -> outputs [ 0 ] , w + ( s -> w - s -> in_w ) , h + ( s -> h - s -> in_h ) ) ; int plane ; if ( ! frame ) return NULL ; frame -> width = w ; frame -> height = h ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && frame -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> int hsub = s -> draw . hsub [ plane ] ; int vsub = s -> draw . vsub [ plane ] ; frame -> data [ plane ] += ( s -> x >> hsub ) * s -> draw . pixelstep [ plane ] + ( s -> y >> vsub ) * frame -> linesize [ plane ] ; } return frame ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ plane ] && frame -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9914\n\n```\nCWE-362 void ip4_datagram_release_cb ( struct sock * sk ) { const struct inet_sock * inet = inet_sk ( sk ) ; const struct ip_options_rcu * inet_opt ; __be32 daddr = inet -> inet_daddr ; <S2SV_StartBug> struct flowi4 fl4 ; <S2SV_EndBug> struct rtable * rt ; <S2SV_StartBug> if ( ! __sk_dst_get ( sk ) || __sk_dst_check ( sk , 0 ) ) <S2SV_EndBug> return ; rcu_read_lock ( ) ; inet_opt = rcu_dereference ( inet -> inet_opt ) ; if ( inet_opt && inet_opt -> opt . srr ) daddr = inet_opt -> opt . faddr ; rt = ip_route_output_ports ( sock_net ( sk ) , & fl4 , sk , daddr , inet -> inet_saddr , inet -> inet_dport , inet -> inet_sport , sk -> sk_protocol , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if ) ; <S2SV_StartBug> if ( ! IS_ERR ( rt ) ) <S2SV_EndBug> <S2SV_StartBug> __sk_dst_set ( sk , & rt -> dst ) ; <S2SV_EndBug> rcu_read_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inet_daddr ; struct dst_entry * dst ; struct <S2SV_ModStart> * rt ; rcu_read_lock ( ) ; dst = __sk_dst_get ( sk ) ; <S2SV_ModStart> if ( ! dst || ! dst -> obsolete || dst -> ops -> check ( dst <S2SV_ModEnd> , 0 ) <S2SV_ModStart> 0 ) ) { rcu_read_unlock ( ) ; return ; } <S2SV_ModEnd> inet_opt = rcu_dereference <S2SV_ModStart> sk_bound_dev_if ) ; dst = <S2SV_ModEnd> ! IS_ERR ( <S2SV_ModStart> ( rt ) ? <S2SV_ModEnd> & rt -> <S2SV_ModStart> & rt -> dst : NULL ; sk_dst_set ( sk ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7022\n\n```\nCWE-119 static int g2m_init_buffers ( G2MContext * c ) { int aligned_height ; if ( ! c -> framebuf || c -> old_width < c -> width || c -> old_height < c -> height ) { <S2SV_StartBug> c -> framebuf_stride = FFALIGN ( c -> width * 3 , 16 ) ; <S2SV_EndBug> <S2SV_StartBug> aligned_height = FFALIGN ( c -> height , 16 ) ; <S2SV_EndBug> av_free ( c -> framebuf ) ; c -> framebuf = av_mallocz ( c -> framebuf_stride * aligned_height ) ; if ( ! c -> framebuf ) return AVERROR ( ENOMEM ) ; } if ( ! c -> synth_tile || ! c -> jpeg_tile || c -> old_tile_w < c -> tile_width || c -> old_tile_h < c -> tile_height ) { c -> tile_stride = FFALIGN ( c -> tile_width , 16 ) * 3 ; aligned_height = FFALIGN ( c -> tile_height , 16 ) ; av_free ( c -> synth_tile ) ; av_free ( c -> jpeg_tile ) ; av_free ( c -> kempf_buf ) ; av_free ( c -> kempf_flags ) ; c -> synth_tile = av_mallocz ( c -> tile_stride * aligned_height ) ; c -> jpeg_tile = av_mallocz ( c -> tile_stride * aligned_height ) ; c -> kempf_buf = av_mallocz ( ( c -> tile_width + 1 ) * aligned_height + FF_INPUT_BUFFER_PADDING_SIZE ) ; c -> kempf_flags = av_mallocz ( c -> tile_width * aligned_height ) ; if ( ! c -> synth_tile || ! c -> jpeg_tile || ! c -> kempf_buf || ! c -> kempf_flags ) return AVERROR ( ENOMEM ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c -> width + 15 <S2SV_ModEnd> , 16 ) <S2SV_ModStart> , 16 ) * 3 ; aligned_height = <S2SV_ModEnd> c -> height <S2SV_ModStart> c -> height + 15 <S2SV_ModEnd> ; av_free (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 void __skb_tstamp_tx ( struct sk_buff * orig_skb , struct skb_shared_hwtstamps * hwtstamps , struct sock * sk , int tstype ) { struct sk_buff * skb ; <S2SV_StartBug> bool tsonly ; <S2SV_EndBug> if ( ! sk ) return ; tsonly = sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_TSONLY ; if ( ! skb_may_tx_timestamp ( sk , tsonly ) ) return ; if ( tsonly ) { # ifdef CONFIG_INET if ( ( sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_STATS ) && sk -> sk_protocol == IPPROTO_TCP && <S2SV_StartBug> sk -> sk_type == SOCK_STREAM ) <S2SV_EndBug> skb = tcp_get_timestamping_opt_stats ( sk ) ; <S2SV_StartBug> else <S2SV_EndBug> # endif skb = alloc_skb ( 0 , GFP_ATOMIC ) ; } else { skb = skb_clone ( orig_skb , GFP_ATOMIC ) ; } if ( ! skb ) return ; if ( tsonly ) { skb_shinfo ( skb ) -> tx_flags = skb_shinfo ( orig_skb ) -> tx_flags ; skb_shinfo ( skb ) -> tskey = skb_shinfo ( orig_skb ) -> tskey ; } if ( hwtstamps ) * skb_hwtstamps ( skb ) = * hwtstamps ; else skb -> tstamp = ktime_get_real ( ) ; <S2SV_StartBug> __skb_complete_tx_timestamp ( skb , sk , tstype ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bool tsonly , opt_stats = false <S2SV_ModStart> == SOCK_STREAM ) { <S2SV_ModStart> sk ) ; opt_stats = true ; } <S2SV_ModStart> sk , tstype , opt_stats\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * sp_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { <S2SV_StartBug> if ( * rsize >= 107 && rdesc [ 104 ] == 0x26 && rdesc [ 105 ] == 0x80 && <S2SV_EndBug> rdesc [ 106 ] == 0x03 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Sunplus<S2SV_blank>Wireless<S2SV_blank>Desktop<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 105 ] = rdesc [ 110 ] = 0x03 ; rdesc [ 106 ] = rdesc [ 111 ] = 0x21 ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 112 <S2SV_ModEnd> && rdesc [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7533\n\n```\nCWE-362 struct dentry * debugfs_rename ( struct dentry * old_dir , struct dentry * old_dentry , struct dentry * new_dir , const char * new_name ) { int error ; struct dentry * dentry = NULL , * trap ; <S2SV_StartBug> const char * old_name ; <S2SV_EndBug> trap = lock_rename ( new_dir , old_dir ) ; if ( d_really_is_negative ( old_dir ) || d_really_is_negative ( new_dir ) ) goto exit ; if ( d_really_is_negative ( old_dentry ) || old_dentry == trap || d_mountpoint ( old_dentry ) ) goto exit ; dentry = lookup_one_len ( new_name , new_dir , strlen ( new_name ) ) ; if ( IS_ERR ( dentry ) || dentry == trap || d_really_is_positive ( dentry ) ) goto exit ; <S2SV_StartBug> old_name = fsnotify_oldname_init ( old_dentry -> d_name . name ) ; <S2SV_EndBug> error = simple_rename ( d_inode ( old_dir ) , old_dentry , d_inode ( new_dir ) , dentry , 0 ) ; if ( error ) { fsnotify_oldname_free ( old_name ) ; goto exit ; } d_move ( old_dentry , dentry ) ; fsnotify_move ( d_inode ( old_dir ) , d_inode ( new_dir ) , old_name , d_is_dir ( old_dentry ) , NULL , old_dentry ) ; <S2SV_StartBug> fsnotify_oldname_free ( old_name ) ; <S2SV_EndBug> unlock_rename ( new_dir , old_dir ) ; dput ( dentry ) ; return old_dentry ; exit : if ( dentry && ! IS_ERR ( dentry ) ) dput ( dentry ) ; unlock_rename ( new_dir , old_dir ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * trap ; struct name_snapshot <S2SV_ModEnd> old_name ; trap <S2SV_ModStart> goto exit ; take_dentry_name_snapshot ( & old_name , old_dentry ) ; error = simple_rename ( d_inode ( old_dir ) , old_dentry , d_inode ( new_dir ) , dentry , 0 ) ; if ( error ) { release_dentry_name_snapshot ( & old_name ) ; goto exit ; } d_move ( old_dentry , dentry ) ; fsnotify_move ( d_inode ( old_dir ) , d_inode ( new_dir ) , old_name . name <S2SV_ModEnd> , d_is_dir ( <S2SV_ModStart> old_dentry ) ; release_dentry_name_snapshot ( & <S2SV_ModEnd> old_name ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8e_set_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { vpx_ref_frame_t * data = va_arg ( args , vpx_ref_frame_t * ) ; if ( data ) { vpx_ref_frame_t * frame = ( vpx_ref_frame_t * ) data ; YV12_BUFFER_CONFIG sd ; image2yuvconfig ( & frame -> img , & sd ) ; vp8_set_reference ( ctx -> cpi , frame -> frame_type , & sd ) ; return VPX_CODEC_OK ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16323\n\n```\nCWE-200 static Image * ReadXBMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char buffer [ MagickPathExtent ] , name [ MagickPathExtent ] ; Image * image ; int c ; MagickBooleanType status ; register ssize_t i , x ; register Quantum * q ; register unsigned char * p ; short int hex_digits [ 256 ] ; ssize_t y ; unsigned char * data ; unsigned int bit , byte , bytes_per_line , height , length , padding , version , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } width = 0 ; height = 0 ; * name = '\\\\0' ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) if ( sscanf ( buffer , \"#define<S2SV_blank>%1024s<S2SV_blank>%u\" , name , & width ) == 2 ) if ( ( strlen ( name ) >= 6 ) && ( LocaleCompare ( name + strlen ( name ) - 6 , \"_width\" ) == 0 ) ) break ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) if ( sscanf ( buffer , \"#define<S2SV_blank>%1024s<S2SV_blank>%u\" , name , & height ) == 2 ) if ( ( strlen ( name ) >= 7 ) && ( LocaleCompare ( name + strlen ( name ) - 7 , \"_height\" ) == 0 ) ) break ; image -> columns = width ; image -> rows = height ; image -> depth = 8 ; image -> storage_class = PseudoClass ; image -> colors = 2 ; version = 11 ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) { if ( sscanf ( buffer , \"static<S2SV_blank>short<S2SV_blank>%1024s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 10 ; else if ( sscanf ( buffer , \"static<S2SV_blank>unsigned<S2SV_blank>char<S2SV_blank>%1024s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 11 ; else if ( sscanf ( buffer , \"static<S2SV_blank>char<S2SV_blank>%1024s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 11 ; else continue ; p = ( unsigned char * ) strrchr ( name , '_' ) ; if ( p == ( unsigned char * ) NULL ) p = ( unsigned char * ) name ; else p ++ ; if ( LocaleCompare ( \"bits[]\" , ( char * ) p ) == 0 ) break ; } if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) || ( EOFBlob ( image ) != MagickFalse ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; image -> colormap [ 0 ] . red = ( MagickRealType ) QuantumRange ; image -> colormap [ 0 ] . green = ( MagickRealType ) QuantumRange ; image -> colormap [ 0 ] . blue = ( MagickRealType ) QuantumRange ; image -> colormap [ 1 ] . red = 0.0 ; image -> colormap [ 1 ] . green = 0.0 ; image -> colormap [ 1 ] . blue = 0.0 ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; for ( i = 0 ; i < ( ssize_t ) ( sizeof ( hex_digits ) / sizeof ( * hex_digits ) ) ; i ++ ) hex_digits [ i ] = ( - 1 ) ; hex_digits [ ( int ) '0' ] = 0 ; hex_digits [ ( int ) '1' ] = 1 ; hex_digits [ ( int ) '2' ] = 2 ; hex_digits [ ( int ) '3' ] = 3 ; hex_digits [ ( int ) '4' ] = 4 ; hex_digits [ ( int ) '5' ] = 5 ; hex_digits [ ( int ) '6' ] = 6 ; hex_digits [ ( int ) '7' ] = 7 ; hex_digits [ ( int ) '8' ] = 8 ; hex_digits [ ( int ) '9' ] = 9 ; hex_digits [ ( int ) 'A' ] = 10 ; hex_digits [ ( int ) 'B' ] = 11 ; hex_digits [ ( int ) 'C' ] = 12 ; hex_digits [ ( int ) 'D' ] = 13 ; hex_digits [ ( int ) 'E' ] = 14 ; hex_digits [ ( int ) 'F' ] = 15 ; hex_digits [ ( int ) 'a' ] = 10 ; hex_digits [ ( int ) 'b' ] = 11 ; hex_digits [ ( int ) 'c' ] = 12 ; hex_digits [ ( int ) 'd' ] = 13 ; hex_digits [ ( int ) 'e' ] = 14 ; hex_digits [ ( int ) 'f' ] = 15 ; hex_digits [ ( int ) 'x' ] = 0 ; hex_digits [ ( int ) '<S2SV_blank>' ] = ( - 1 ) ; hex_digits [ ( int ) ',' ] = ( - 1 ) ; hex_digits [ ( int ) '}' ] = ( - 1 ) ; hex_digits [ ( int ) '\\\\n' ] = ( - 1 ) ; hex_digits [ ( int ) '\\\\t' ] = ( - 1 ) ; padding = 0 ; if ( ( ( image -> columns % 16 ) != 0 ) && ( ( image -> columns % 16 ) < 9 ) && ( version == 10 ) ) padding = 1 ; bytes_per_line = ( unsigned int ) ( image -> columns + 7 ) / 8 + padding ; length = ( unsigned int ) image -> rows ; data = ( unsigned char * ) AcquireQuantumMemory ( length , bytes_per_line * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; if ( version == 10 ) for ( i = 0 ; i < ( ssize_t ) ( bytes_per_line * image -> rows ) ; ( i += 2 ) ) { c = XBMInteger ( image , hex_digits ) ; if ( c < 0 ) <S2SV_StartBug> break ; <S2SV_EndBug> * p ++ = ( unsigned char ) c ; if ( ( padding == 0 ) || ( ( ( i + 2 ) % bytes_per_line ) != 0 ) ) * p ++ = ( unsigned char ) ( c >> 8 ) ; } else for ( i = 0 ; i < ( ssize_t ) ( bytes_per_line * image -> rows ) ; i ++ ) { c = XBMInteger ( image , hex_digits ) ; if ( c < 0 ) <S2SV_StartBug> break ; <S2SV_EndBug> * p ++ = ( unsigned char ) c ; } if ( EOFBlob ( image ) != MagickFalse ) { data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } p = data ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; bit = 0 ; byte = 0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( bit == 0 ) byte = ( unsigned int ) ( * p ++ ) ; SetPixelIndex ( image , ( Quantum ) ( ( byte & 0x01 ) != 0 ? 0x01 : 0x00 ) , q ) ; bit ++ ; byte >>= 1 ; if ( bit == 8 ) bit = 0 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ( void ) SyncImage ( image , exception ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) { data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } <S2SV_ModEnd> * p ++ <S2SV_ModStart> < 0 ) { data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } <S2SV_ModEnd> * p ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 int cdf_read_short_sector_chain ( const cdf_header_t * h , const cdf_sat_t * ssat , const cdf_stream_t * sst , cdf_secid_t sid , size_t len , cdf_stream_t * scn ) { <S2SV_StartBug> size_t ss = CDF_SEC_SIZE ( h ) , i , j ; <S2SV_EndBug> scn -> sst_len = cdf_count_chain ( ssat , sid , CDF_SEC_SIZE ( h ) ) ; scn -> sst_dirlen = len ; if ( sst -> sst_tab == NULL || scn -> sst_len == ( size_t ) - 1 ) return - 1 ; scn -> sst_tab = calloc ( scn -> sst_len , ss ) ; if ( scn -> sst_tab == NULL ) return - 1 ; for ( j = i = 0 ; sid >= 0 ; i ++ , j ++ ) { if ( j >= CDF_LOOP_LIMIT ) { DPRINTF ( ( \"Read<S2SV_blank>short<S2SV_blank>sector<S2SV_blank>chain<S2SV_blank>loop<S2SV_blank>limit\" ) ) ; errno = EFTYPE ; goto out ; } if ( i >= scn -> sst_len ) { DPRINTF ( ( \"Out<S2SV_blank>of<S2SV_blank>bounds<S2SV_blank>reading<S2SV_blank>short<S2SV_blank>sector<S2SV_blank>chain<S2SV_blank>\" \"%\" SIZE_T_FORMAT \"u<S2SV_blank>><S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , i , scn -> sst_len ) ) ; errno = EFTYPE ; goto out ; } if ( cdf_read_short_sector ( sst , scn -> sst_tab , i * ss , ss , h , sid ) != ( ssize_t ) ss ) { DPRINTF ( ( \"Reading<S2SV_blank>short<S2SV_blank>sector<S2SV_blank>chain<S2SV_blank>%d\" , sid ) ) ; goto out ; } sid = CDF_TOLE4 ( ( uint32_t ) ssat -> sat_tab [ sid ] ) ; } return 0 ; out : free ( scn -> sst_tab ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t ss = CDF_SHORT_SEC_SIZE <S2SV_ModEnd> ( h )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static inline int btif_hl_select_wakeup ( void ) { char sig_on = btif_hl_signal_select_wakeup ; BTIF_TRACE_DEBUG ( \"btif_hl_select_wakeup\" ) ; <S2SV_StartBug> return send ( signal_fds [ 1 ] , & sig_on , sizeof ( sig_on ) , 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9907\n\n```\nCWE-20 static void ComputePrincipleComponent ( const float * covariance , DDSVector3 * principle ) { DDSVector4 row0 , row1 , row2 , v ; register ssize_t i ; row0 . x = covariance [ 0 ] ; row0 . y = covariance [ 1 ] ; row0 . z = covariance [ 2 ] ; row0 . w = 0.0f ; row1 . x = covariance [ 1 ] ; row1 . y = covariance [ 3 ] ; row1 . z = covariance [ 4 ] ; row1 . w = 0.0f ; row2 . x = covariance [ 2 ] ; row2 . y = covariance [ 4 ] ; row2 . z = covariance [ 5 ] ; row2 . w = 0.0f ; VectorInit ( v , 1.0f ) ; for ( i = 0 ; i < 8 ; i ++ ) { DDSVector4 w ; float a ; w . x = row0 . x * v . x ; w . y = row0 . y * v . x ; w . z = row0 . z * v . x ; w . w = row0 . w * v . x ; w . x = ( row1 . x * v . y ) + w . x ; w . y = ( row1 . y * v . y ) + w . y ; w . z = ( row1 . z * v . y ) + w . z ; w . w = ( row1 . w * v . y ) + w . w ; w . x = ( row2 . x * v . z ) + w . x ; w . y = ( row2 . y * v . z ) + w . y ; w . z = ( row2 . z * v . z ) + w . z ; w . w = ( row2 . w * v . z ) + w . w ; <S2SV_StartBug> a = 1.0f / MaxF ( w . x , MaxF ( w . y , w . z ) ) ; <S2SV_EndBug> v . x = w . x * a ; v . y = w . y * a ; v . z = w . z * a ; v . w = w . w * a ; } VectorCopy43 ( v , principle ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 1.0f / MagickMax ( w . x , MagickMax <S2SV_ModEnd> ( w .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> static int jas_iccgetuint ( jas_stream_t * in , int n , ulonglong * val ) <S2SV_EndBug> { int i ; int c ; <S2SV_StartBug> ulonglong v ; <S2SV_EndBug> v = 0 ; for ( i = n ; i > 0 ; -- i ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) return - 1 ; v = ( v << 8 ) | c ; } * val = v ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int n , jas_ulonglong <S2SV_ModEnd> * val ) <S2SV_ModStart> int c ; jas_ulonglong <S2SV_ModEnd> v ; v\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4003\n\n```\nCWE-189 static void oz_usb_handle_ep_data ( struct oz_usb_ctx * usb_ctx , struct oz_usb_hdr * usb_hdr , int len ) { struct oz_data * data_hdr = ( struct oz_data * ) usb_hdr ; switch ( data_hdr -> format ) { case OZ_DATA_F_MULTIPLE_FIXED : { struct oz_multiple_fixed * body = ( struct oz_multiple_fixed * ) data_hdr ; u8 * data = body -> data ; <S2SV_StartBug> int n = ( len - sizeof ( struct oz_multiple_fixed ) + 1 ) <S2SV_EndBug> / body -> unit_size ; while ( n -- ) { oz_hcd_data_ind ( usb_ctx -> hport , body -> endpoint , data , body -> unit_size ) ; data += body -> unit_size ; } } break ; case OZ_DATA_F_ISOC_FIXED : { struct oz_isoc_fixed * body = ( struct oz_isoc_fixed * ) data_hdr ; int data_len = len - sizeof ( struct oz_isoc_fixed ) + 1 ; int unit_size = body -> unit_size ; u8 * data = body -> data ; int count ; int i ; if ( ! unit_size ) break ; count = data_len / unit_size ; for ( i = 0 ; i < count ; i ++ ) { oz_hcd_data_ind ( usb_ctx -> hport , body -> endpoint , data , unit_size ) ; data += unit_size ; } } break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int n ; if ( ! body -> unit_size ) break ; n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10270\n\n```\nCWE-125 uint32 TIFFNumberOfStrips ( TIFF * tif ) { TIFFDirectory * td = & tif -> tif_dir ; <S2SV_StartBug> uint32 nstrips ; <S2SV_EndBug> if ( td -> td_nstrips ) return td -> td_nstrips ; nstrips = ( td -> td_rowsperstrip == ( uint32 ) - 1 ? 1 : TIFFhowmany_32 ( td -> td_imagelength , td -> td_rowsperstrip ) ) ; if ( td -> td_planarconfig == PLANARCONFIG_SEPARATE ) nstrips = _TIFFMultiply32 ( tif , nstrips , ( uint32 ) td -> td_samplesperpixel , \"TIFFNumberOfStrips\" ) ; return ( nstrips ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint32 nstrips <S2SV_ModEnd> ; nstrips =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14064\n\n```\nCWE-119 static char * fstrndup ( const char * ptr , unsigned long len ) { char * result ; if ( len <= 0 ) return NULL ; result = ALLOC_N ( char , len ) ; <S2SV_StartBug> memccpy ( result , ptr , 0 , len ) ; <S2SV_EndBug> return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) ; memcpy <S2SV_ModEnd> ( result , <S2SV_ModStart> result , ptr <S2SV_ModEnd> , len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-78 void imap_munge_mbox_name ( struct ImapData * idata , char * dest , size_t dlen , const char * src ) { char * buf = mutt_str_strdup ( src ) ; imap_utf_encode ( idata , & buf ) ; <S2SV_StartBug> imap_quote_string ( dest , dlen , buf ) ; <S2SV_EndBug> FREE ( & buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dlen , buf , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6887\n\n```\nCWE-119 int CLASS parse_tiff_ifd ( int base ) { unsigned entries , tag , type , len , plen = 16 , save ; int ifd , use_cm = 0 , cfa , i , j , c , ima_len = 0 ; char * cbuf , * cp ; uchar cfa_pat [ 16 ] , cfa_pc [ ] = { 0 , 1 , 2 , 3 } , tab [ 256 ] ; double fm [ 3 ] [ 4 ] , cc [ 4 ] [ 4 ] , cm [ 4 ] [ 3 ] , cam_xyz [ 4 ] [ 3 ] , num ; double ab [ ] = { 1 , 1 , 1 , 1 } , asn [ ] = { 0 , 0 , 0 , 0 } , xyz [ ] = { 1 , 1 , 1 } ; unsigned sony_curve [ ] = { 0 , 0 , 0 , 0 , 0 , 4095 } ; unsigned * buf , sony_offset = 0 , sony_length = 0 , sony_key = 0 ; struct jhead jh ; int pana_raw = 0 ; # ifndef LIBRAW_LIBRARY_BUILD FILE * sfp ; # endif if ( tiff_nifds >= sizeof tiff_ifd / sizeof tiff_ifd [ 0 ] ) return 1 ; ifd = tiff_nifds ++ ; for ( j = 0 ; j < 4 ; j ++ ) for ( i = 0 ; i < 4 ; i ++ ) cc [ j ] [ i ] = i == j ; entries = get2 ( ) ; if ( entries > 512 ) return 1 ; # ifdef LIBRAW_LIBRARY_BUILD INT64 fsize = ifp -> size ( ) ; # endif while ( entries -- ) { tiff_get ( base , & tag , & type , & len , & save ) ; # ifdef LIBRAW_LIBRARY_BUILD INT64 savepos = ftell ( ifp ) ; if ( len > 8 && len + savepos > fsize * 2 ) continue ; if ( callbacks . exif_cb ) { callbacks . exif_cb ( callbacks . exifparser_data , tag | ( pana_raw ? 0x30000 : 0 ) , type , len , order , ifp ) ; fseek ( ifp , savepos , SEEK_SET ) ; } # endif # ifdef LIBRAW_LIBRARY_BUILD if ( ! strncasecmp ( make , \"SONY\" , 4 ) || ( ! strncasecmp ( make , \"Hasselblad\" , 10 ) && ( ! strncasecmp ( model , \"Stellar\" , 7 ) || ! strncasecmp ( model , \"Lunar\" , 5 ) || ! strncasecmp ( model , \"HV\" , 2 ) ) ) ) { switch ( tag ) { case 0x7300 : for ( int i = 0 ; i < 4 && i < len ; i ++ ) cblack [ i ] = get2 ( ) ; break ; case 0x7480 : case 0x7820 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Daylight ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Daylight ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_Daylight ] [ 1 ] ; break ; case 0x7481 : case 0x7821 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Cloudy ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Cloudy ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_Cloudy ] [ 1 ] ; break ; case 0x7482 : case 0x7822 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Tungsten ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Tungsten ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_Tungsten ] [ 1 ] ; break ; case 0x7483 : case 0x7823 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Flash ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Flash ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_Flash ] [ 1 ] ; break ; case 0x7484 : case 0x7824 : imgdata . color . WBCT_Coeffs [ 0 ] [ 0 ] = 4500 ; FORC3 imgdata . color . WBCT_Coeffs [ 0 ] [ c + 1 ] = get2 ( ) ; imgdata . color . WBCT_Coeffs [ 0 ] [ 4 ] = imgdata . color . WBCT_Coeffs [ 0 ] [ 2 ] ; break ; case 0x7486 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Fluorescent ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Fluorescent ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_Fluorescent ] [ 1 ] ; break ; case 0x7825 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_Shade ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Shade ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_Shade ] [ 1 ] ; break ; case 0x7826 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_W ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_W ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_W ] [ 1 ] ; break ; case 0x7827 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_N ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_N ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_N ] [ 1 ] ; break ; case 0x7828 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_D ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_D ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_D ] [ 1 ] ; break ; case 0x7829 : FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_L ] [ c ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_L ] [ 3 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_L ] [ 1 ] ; break ; case 0x782a : imgdata . color . WBCT_Coeffs [ 1 ] [ 0 ] = 8500 ; FORC3 imgdata . color . WBCT_Coeffs [ 1 ] [ c + 1 ] = get2 ( ) ; imgdata . color . WBCT_Coeffs [ 1 ] [ 4 ] = imgdata . color . WBCT_Coeffs [ 1 ] [ 2 ] ; break ; case 0x782b : imgdata . color . WBCT_Coeffs [ 2 ] [ 0 ] = 6000 ; FORC3 imgdata . color . WBCT_Coeffs [ 2 ] [ c + 1 ] = get2 ( ) ; imgdata . color . WBCT_Coeffs [ 2 ] [ 4 ] = imgdata . color . WBCT_Coeffs [ 2 ] [ 2 ] ; break ; case 0x782c : imgdata . color . WBCT_Coeffs [ 3 ] [ 0 ] = 3200 ; FORC3 imgdata . color . WB_Coeffs [ LIBRAW_WBI_StudioTungsten ] [ c ] = imgdata . color . WBCT_Coeffs [ 3 ] [ c + 1 ] = get2 ( ) ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_StudioTungsten ] [ 3 ] = imgdata . color . WBCT_Coeffs [ 3 ] [ 4 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_StudioTungsten ] [ 1 ] ; break ; case 0x782d : imgdata . color . WBCT_Coeffs [ 4 ] [ 0 ] = 2500 ; FORC3 imgdata . color . WBCT_Coeffs [ 4 ] [ c + 1 ] = get2 ( ) ; imgdata . color . WBCT_Coeffs [ 4 ] [ 4 ] = imgdata . color . WBCT_Coeffs [ 4 ] [ 2 ] ; break ; case 0x787f : FORC3 imgdata . color . linear_max [ c ] = get2 ( ) ; imgdata . color . linear_max [ 3 ] = imgdata . color . linear_max [ 1 ] ; break ; } } # endif switch ( tag ) { case 1 : if ( len == 4 ) pana_raw = get4 ( ) ; break ; case 5 : width = get2 ( ) ; break ; case 6 : height = get2 ( ) ; break ; case 7 : width += get2 ( ) ; break ; case 9 : if ( ( i = get2 ( ) ) ) filters = i ; # ifdef LIBRAW_LIBRARY_BUILD if ( pana_raw && len == 1 && type == 3 ) pana_black [ 3 ] += i ; # endif break ; case 8 : case 10 : # ifdef LIBRAW_LIBRARY_BUILD if ( pana_raw && len == 1 && type == 3 ) pana_black [ 3 ] += get2 ( ) ; # endif break ; case 14 : case 15 : case 16 : # ifdef LIBRAW_LIBRARY_BUILD if ( pana_raw ) { imgdata . color . linear_max [ tag - 14 ] = get2 ( ) ; if ( tag == 15 ) imgdata . color . linear_max [ 3 ] = imgdata . color . linear_max [ 1 ] ; } # endif break ; case 17 : case 18 : if ( type == 3 && len == 1 ) cam_mul [ ( tag - 17 ) * 2 ] = get2 ( ) / 256.0 ; break ; # ifdef LIBRAW_LIBRARY_BUILD case 19 : if ( pana_raw ) { ushort nWB , cnt , tWB ; nWB = get2 ( ) ; if ( nWB > 0x100 ) break ; for ( cnt = 0 ; cnt < nWB ; cnt ++ ) { tWB = get2 ( ) ; if ( tWB < 0x100 ) { imgdata . color . WB_Coeffs [ tWB ] [ 0 ] = get2 ( ) ; imgdata . color . WB_Coeffs [ tWB ] [ 2 ] = get2 ( ) ; imgdata . color . WB_Coeffs [ tWB ] [ 1 ] = imgdata . color . WB_Coeffs [ tWB ] [ 3 ] = 0x100 ; } else get4 ( ) ; } } break ; # endif case 23 : if ( type == 3 ) iso_speed = get2 ( ) ; break ; case 28 : case 29 : case 30 : # ifdef LIBRAW_LIBRARY_BUILD if ( pana_raw && len == 1 && type == 3 ) { pana_black [ tag - 28 ] = get2 ( ) ; } else # endif { cblack [ tag - 28 ] = get2 ( ) ; cblack [ 3 ] = cblack [ 1 ] ; } break ; case 36 : case 37 : case 38 : cam_mul [ tag - 36 ] = get2 ( ) ; break ; case 39 : # ifdef LIBRAW_LIBRARY_BUILD if ( pana_raw ) { ushort nWB , cnt , tWB ; nWB = get2 ( ) ; if ( nWB > 0x100 ) break ; for ( cnt = 0 ; cnt < nWB ; cnt ++ ) { tWB = get2 ( ) ; if ( tWB < 0x100 ) { imgdata . color . WB_Coeffs [ tWB ] [ 0 ] = get2 ( ) ; imgdata . color . WB_Coeffs [ tWB ] [ 1 ] = imgdata . color . WB_Coeffs [ tWB ] [ 3 ] = get2 ( ) ; imgdata . color . WB_Coeffs [ tWB ] [ 2 ] = get2 ( ) ; } else fseek ( ifp , 6 , SEEK_CUR ) ; } } break ; # endif if ( len < 50 || cam_mul [ 0 ] ) break ; fseek ( ifp , 12 , SEEK_CUR ) ; FORC3 cam_mul [ c ] = get2 ( ) ; break ; case 46 : if ( type != 7 || fgetc ( ifp ) != 0xff || fgetc ( ifp ) != 0xd8 ) break ; thumb_offset = ftell ( ifp ) - 2 ; thumb_length = len ; break ; case 61440 : fseek ( ifp , get4 ( ) + base , SEEK_SET ) ; parse_tiff_ifd ( base ) ; break ; case 2 : case 256 : case 61441 : tiff_ifd [ ifd ] . t_width = getint ( type ) ; break ; case 3 : case 257 : case 61442 : tiff_ifd [ ifd ] . t_height = getint ( type ) ; break ; case 258 : case 61443 : tiff_ifd [ ifd ] . samples = len & 7 ; tiff_ifd [ ifd ] . bps = getint ( type ) ; if ( tiff_bps < tiff_ifd [ ifd ] . bps ) tiff_bps = tiff_ifd [ ifd ] . bps ; break ; case 61446 : raw_height = 0 ; if ( tiff_ifd [ ifd ] . bps > 12 ) break ; load_raw = & CLASS packed_load_raw ; load_flags = get4 ( ) ? 24 : 80 ; break ; case 259 : tiff_ifd [ ifd ] . comp = getint ( type ) ; break ; case 262 : tiff_ifd [ ifd ] . phint = get2 ( ) ; break ; case 270 : fread ( desc , 512 , 1 , ifp ) ; break ; case 271 : fgets ( make , 64 , ifp ) ; break ; case 272 : fgets ( model , 64 , ifp ) ; break ; # ifdef LIBRAW_LIBRARY_BUILD case 278 : tiff_ifd [ ifd ] . rows_per_strip = getint ( type ) ; break ; # endif case 280 : if ( type != 4 ) break ; load_raw = & CLASS panasonic_load_raw ; load_flags = 0x2008 ; case 273 : # ifdef LIBRAW_LIBRARY_BUILD if ( len > 1 && len < 16384 ) { off_t sav = ftell ( ifp ) ; tiff_ifd [ ifd ] . strip_offsets = ( int * ) calloc ( len , sizeof ( int ) ) ; tiff_ifd [ ifd ] . strip_offsets_count = len ; for ( int i = 0 ; i < len ; i ++ ) tiff_ifd [ ifd ] . strip_offsets [ i ] = get4 ( ) + base ; fseek ( ifp , sav , SEEK_SET ) ; } # endif case 513 : case 61447 : tiff_ifd [ ifd ] . offset = get4 ( ) + base ; if ( ! tiff_ifd [ ifd ] . bps && tiff_ifd [ ifd ] . offset > 0 ) { fseek ( ifp , tiff_ifd [ ifd ] . offset , SEEK_SET ) ; if ( ljpeg_start ( & jh , 1 ) ) { tiff_ifd [ ifd ] . comp = 6 ; tiff_ifd [ ifd ] . t_width = jh . wide ; tiff_ifd [ ifd ] . t_height = jh . high ; tiff_ifd [ ifd ] . bps = jh . bits ; tiff_ifd [ ifd ] . samples = jh . clrs ; if ( ! ( jh . sraw || ( jh . clrs & 1 ) ) ) tiff_ifd [ ifd ] . t_width *= jh . clrs ; if ( ( tiff_ifd [ ifd ] . t_width > 4 * tiff_ifd [ ifd ] . t_height ) & ~ jh . clrs ) { tiff_ifd [ ifd ] . t_width /= 2 ; tiff_ifd [ ifd ] . t_height *= 2 ; } i = order ; parse_tiff ( tiff_ifd [ ifd ] . offset + 12 ) ; order = i ; } } break ; case 274 : tiff_ifd [ ifd ] . t_flip = \"50132467\" [ get2 ( ) & 7 ] - '0' ; break ; case 277 : tiff_ifd [ ifd ] . samples = getint ( type ) & 7 ; break ; case 279 : # ifdef LIBRAW_LIBRARY_BUILD if ( len > 1 && len < 16384 ) { off_t sav = ftell ( ifp ) ; tiff_ifd [ ifd ] . strip_byte_counts = ( int * ) calloc ( len , sizeof ( int ) ) ; tiff_ifd [ ifd ] . strip_byte_counts_count = len ; for ( int i = 0 ; i < len ; i ++ ) tiff_ifd [ ifd ] . strip_byte_counts [ i ] = get4 ( ) ; fseek ( ifp , sav , SEEK_SET ) ; } # endif case 514 : case 61448 : tiff_ifd [ ifd ] . bytes = get4 ( ) ; break ; case 61454 : FORC3 cam_mul [ ( 4 - c ) % 3 ] = getint ( type ) ; break ; case 305 : case 11 : fgets ( software , 64 , ifp ) ; if ( ! strncmp ( software , \"Adobe\" , 5 ) || ! strncmp ( software , \"dcraw\" , 5 ) || ! strncmp ( software , \"UFRaw\" , 5 ) || ! strncmp ( software , \"Bibble\" , 6 ) || ! strcmp ( software , \"Digital<S2SV_blank>Photo<S2SV_blank>Professional\" ) ) is_raw = 0 ; break ; case 306 : get_timestamp ( 0 ) ; break ; case 315 : fread ( artist , 64 , 1 , ifp ) ; break ; case 317 : tiff_ifd [ ifd ] . predictor = getint ( type ) ; break ; case 322 : tiff_ifd [ ifd ] . t_tile_width = getint ( type ) ; break ; case 323 : tiff_ifd [ ifd ] . t_tile_length = getint ( type ) ; break ; case 324 : tiff_ifd [ ifd ] . offset = len > 1 ? ftell ( ifp ) : get4 ( ) ; if ( len == 1 ) tiff_ifd [ ifd ] . t_tile_width = tiff_ifd [ ifd ] . t_tile_length = 0 ; if ( len == 4 ) { load_raw = & CLASS sinar_4shot_load_raw ; is_raw = 5 ; } break ; case 325 : tiff_ifd [ ifd ] . bytes = len > 1 ? ftell ( ifp ) : get4 ( ) ; break ; case 330 : if ( ! strcmp ( model , \"DSLR-A100\" ) && tiff_ifd [ ifd ] . t_width == 3872 ) { load_raw = & CLASS sony_arw_load_raw ; data_offset = get4 ( ) + base ; <S2SV_StartBug> ifd ++ ; <S2SV_EndBug> break ; } # ifdef LIBRAW_LIBRARY_BUILD if ( ! strncmp ( make , \"Hasselblad\" , 10 ) && libraw_internal_data . unpacker_data . hasselblad_parser_flag ) { fseek ( ifp , ftell ( ifp ) + 4 , SEEK_SET ) ; fseek ( ifp , get4 ( ) + base , SEEK_SET ) ; parse_tiff_ifd ( base ) ; break ; } # endif if ( len > 1000 ) len = 1000 ; while ( len -- ) { i = ftell ( ifp ) ; fseek ( ifp , get4 ( ) + base , SEEK_SET ) ; if ( parse_tiff_ifd ( base ) ) break ; fseek ( ifp , i + 4 , SEEK_SET ) ; } break ; case 339 : tiff_ifd [ ifd ] . sample_format = getint ( type ) ; break ; case 400 : strcpy ( make , \"Sarnoff\" ) ; maximum = 0xfff ; break ; # ifdef LIBRAW_LIBRARY_BUILD case 700 : if ( ( type == 1 || type == 2 || type == 6 || type == 7 ) && len > 1 && len < 5100000 ) { xmpdata = ( char * ) malloc ( xmplen = len + 1 ) ; fread ( xmpdata , len , 1 , ifp ) ; xmpdata [ len ] = 0 ; } break ; # endif case 28688 : FORC4 sony_curve [ c + 1 ] = get2 ( ) >> 2 & 0xfff ; for ( i = 0 ; i < 5 ; i ++ ) for ( j = sony_curve [ i ] + 1 ; j <= sony_curve [ i + 1 ] ; j ++ ) curve [ j ] = curve [ j - 1 ] + ( 1 << i ) ; break ; case 29184 : sony_offset = get4 ( ) ; break ; case 29185 : sony_length = get4 ( ) ; break ; case 29217 : sony_key = get4 ( ) ; break ; case 29264 : parse_minolta ( ftell ( ifp ) ) ; raw_width = 0 ; break ; case 29443 : FORC4 cam_mul [ c ^ ( c < 2 ) ] = get2 ( ) ; break ; case 29459 : FORC4 cam_mul [ c ] = get2 ( ) ; i = ( cam_mul [ 1 ] == 1024 && cam_mul [ 2 ] == 1024 ) << 1 ; SWAP ( cam_mul [ i ] , cam_mul [ i + 1 ] ) break ; # ifdef LIBRAW_LIBRARY_BUILD case 30720 : for ( i = 0 ; i < 3 ; i ++ ) { float num = 0.0 ; for ( c = 0 ; c < 3 ; c ++ ) { imgdata . color . ccm [ i ] [ c ] = ( float ) ( ( short ) get2 ( ) ) ; num += imgdata . color . ccm [ i ] [ c ] ; } if ( num > 0.01 ) FORC3 imgdata . color . ccm [ i ] [ c ] = imgdata . color . ccm [ i ] [ c ] / num ; } break ; # endif case 29456 : FORC4 cblack [ c ^ c >> 1 ] = get2 ( ) ; i = cblack [ 3 ] ; FORC3 if ( i > cblack [ c ] ) i = cblack [ c ] ; FORC4 cblack [ c ] -= i ; black = i ; # ifdef DCRAW_VERBOSE if ( verbose ) fprintf ( stderr , _ ( \"...Sony<S2SV_blank>black:<S2SV_blank>%u<S2SV_blank>cblack:<S2SV_blank>%u<S2SV_blank>%u<S2SV_blank>%u<S2SV_blank>%u\\\\n\" ) , black , cblack [ 0 ] , cblack [ 1 ] , cblack [ 2 ] , cblack [ 3 ] ) ; # endif break ; case 33405 : fgets ( model2 , 64 , ifp ) ; break ; case 33421 : if ( get2 ( ) == 6 && get2 ( ) == 6 ) filters = 9 ; break ; case 33422 : if ( filters == 9 ) { FORC ( 36 ) ( ( char * ) xtrans ) [ c ] = fgetc ( ifp ) & 3 ; break ; } case 64777 : if ( len == 36 ) { filters = 9 ; colors = 3 ; FORC ( 36 ) xtrans [ 0 ] [ c ] = fgetc ( ifp ) & 3 ; } else if ( len > 0 ) { if ( ( plen = len ) > 16 ) plen = 16 ; fread ( cfa_pat , 1 , plen , ifp ) ; for ( colors = cfa = i = 0 ; i < plen && colors < 4 ; i ++ ) { colors += ! ( cfa & ( 1 << cfa_pat [ i ] ) ) ; cfa |= 1 << cfa_pat [ i ] ; } if ( cfa == 070 ) memcpy ( cfa_pc , \"\\\\003\\\\004\\\\005\" , 3 ) ; if ( cfa == 072 ) memcpy ( cfa_pc , \"\\\\005\\\\003\\\\004\\\\001\" , 4 ) ; goto guess_cfa_pc ; } break ; case 33424 : case 65024 : fseek ( ifp , get4 ( ) + base , SEEK_SET ) ; parse_kodak_ifd ( base ) ; break ; case 33434 : tiff_ifd [ ifd ] . t_shutter = shutter = getreal ( type ) ; break ; case 33437 : aperture = getreal ( type ) ; break ; # ifdef LIBRAW_LIBRARY_BUILD case 0xa405 : imgdata . lens . FocalLengthIn35mmFormat = get2 ( ) ; break ; case 0xa431 : case 0xc62f : stmread ( imgdata . shootinginfo . BodySerial , len , ifp ) ; break ; case 0xa432 : imgdata . lens . MinFocal = getreal ( type ) ; imgdata . lens . MaxFocal = getreal ( type ) ; imgdata . lens . MaxAp4MinFocal = getreal ( type ) ; imgdata . lens . MaxAp4MaxFocal = getreal ( type ) ; break ; case 0xa435 : stmread ( imgdata . lens . LensSerial , len , ifp ) ; break ; case 0xc630 : imgdata . lens . MinFocal = getreal ( type ) ; imgdata . lens . MaxFocal = getreal ( type ) ; imgdata . lens . MaxAp4MinFocal = getreal ( type ) ; imgdata . lens . MaxAp4MaxFocal = getreal ( type ) ; break ; case 0xa433 : stmread ( imgdata . lens . LensMake , len , ifp ) ; break ; case 0xa434 : stmread ( imgdata . lens . Lens , len , ifp ) ; if ( ! strncmp ( imgdata . lens . Lens , \"----\" , 4 ) ) imgdata . lens . Lens [ 0 ] = 0 ; break ; case 0x9205 : imgdata . lens . EXIF_MaxAp = powf64 ( 2.0f , ( getreal ( type ) / 2.0f ) ) ; break ; # endif case 34306 : FORC4 cam_mul [ c ^ 1 ] = 4096.0 / get2 ( ) ; break ; case 34307 : fread ( software , 1 , 7 , ifp ) ; if ( strncmp ( software , \"MATRIX\" , 6 ) ) break ; colors = 4 ; for ( raw_color = i = 0 ; i < 3 ; i ++ ) { FORC4 fscanf ( ifp , \"%f\" , & rgb_cam [ i ] [ c ^ 1 ] ) ; if ( ! use_camera_wb ) continue ; num = 0 ; FORC4 num += rgb_cam [ i ] [ c ] ; FORC4 rgb_cam [ i ] [ c ] /= MAX ( 1 , num ) ; } break ; case 34310 : parse_mos ( ftell ( ifp ) ) ; case 34303 : strcpy ( make , \"Leaf\" ) ; break ; case 34665 : fseek ( ifp , get4 ( ) + base , SEEK_SET ) ; parse_exif ( base ) ; break ; case 34853 : { unsigned pos ; fseek ( ifp , pos = ( get4 ( ) + base ) , SEEK_SET ) ; parse_gps ( base ) ; # ifdef LIBRAW_LIBRARY_BUILD fseek ( ifp , pos , SEEK_SET ) ; parse_gps_libraw ( base ) ; # endif } break ; case 34675 : case 50831 : profile_offset = ftell ( ifp ) ; profile_length = len ; break ; case 37122 : kodak_cbpp = get4 ( ) ; break ; case 37386 : focal_len = getreal ( type ) ; break ; case 37393 : shot_order = getint ( type ) ; break ; case 37400 : for ( raw_color = i = 0 ; i < 3 ; i ++ ) { getreal ( type ) ; FORC3 rgb_cam [ i ] [ c ] = getreal ( type ) ; } break ; case 40976 : strip_offset = get4 ( ) ; switch ( tiff_ifd [ ifd ] . comp ) { case 32770 : load_raw = & CLASS samsung_load_raw ; break ; case 32772 : load_raw = & CLASS samsung2_load_raw ; break ; case 32773 : load_raw = & CLASS samsung3_load_raw ; break ; } break ; case 46275 : strcpy ( make , \"Imacon\" ) ; data_offset = ftell ( ifp ) ; ima_len = len ; break ; case 46279 : if ( ! ima_len ) break ; fseek ( ifp , 38 , SEEK_CUR ) ; case 46274 : fseek ( ifp , 40 , SEEK_CUR ) ; raw_width = get4 ( ) ; raw_height = get4 ( ) ; left_margin = get4 ( ) & 7 ; width = raw_width - left_margin - ( get4 ( ) & 7 ) ; top_margin = get4 ( ) & 7 ; height = raw_height - top_margin - ( get4 ( ) & 7 ) ; if ( raw_width == 7262 && ima_len == 234317952 ) { height = 5412 ; width = 7216 ; left_margin = 7 ; filters = 0 ; } else if ( raw_width == 7262 ) { height = 5444 ; width = 7244 ; left_margin = 7 ; } fseek ( ifp , 52 , SEEK_CUR ) ; FORC3 cam_mul [ c ] = getreal ( 11 ) ; fseek ( ifp , 114 , SEEK_CUR ) ; flip = ( get2 ( ) >> 7 ) * 90 ; if ( width * height * 6 == ima_len ) { if ( flip % 180 == 90 ) SWAP ( width , height ) ; raw_width = width ; raw_height = height ; left_margin = top_margin = filters = flip = 0 ; } sprintf ( model , \"Ixpress<S2SV_blank>%d-Mp\" , height * width / 1000000 ) ; load_raw = & CLASS imacon_full_load_raw ; if ( filters ) { if ( left_margin & 1 ) filters = 0x61616161 ; load_raw = & CLASS unpacked_load_raw ; } maximum = 0xffff ; break ; case 50454 : case 50455 : <S2SV_StartBug> if ( len > 2560000 || ! ( cbuf = ( char * ) malloc ( len ) ) ) <S2SV_EndBug> break ; # ifndef LIBRAW_LIBRARY_BUILD fread ( cbuf , 1 , len , ifp ) ; # else if ( fread ( cbuf , 1 , len , ifp ) != len ) throw LIBRAW_EXCEPTION_IO_CORRUPT ; # endif cbuf [ len - 1 ] = 0 ; for ( cp = cbuf - 1 ; cp && cp < cbuf + len ; cp = strchr ( cp , '\\\\n' ) ) if ( ! strncmp ( ++ cp , \"Neutral<S2SV_blank>\" , 8 ) ) sscanf ( cp + 8 , \"%f<S2SV_blank>%f<S2SV_blank>%f\" , cam_mul , cam_mul + 1 , cam_mul + 2 ) ; free ( cbuf ) ; break ; case 50458 : if ( ! make [ 0 ] ) strcpy ( make , \"Hasselblad\" ) ; break ; case 50459 : # ifdef LIBRAW_LIBRARY_BUILD libraw_internal_data . unpacker_data . hasselblad_parser_flag = 1 ; # endif i = order ; j = ftell ( ifp ) ; c = tiff_nifds ; order = get2 ( ) ; fseek ( ifp , j + ( get2 ( ) , get4 ( ) ) , SEEK_SET ) ; parse_tiff_ifd ( j ) ; maximum = 0xffff ; tiff_nifds = c ; order = i ; break ; case 50706 : FORC4 dng_version = ( dng_version << 8 ) + fgetc ( ifp ) ; if ( ! make [ 0 ] ) strcpy ( make , \"DNG\" ) ; is_raw = 1 ; break ; case 50708 : # ifdef LIBRAW_LIBRARY_BUILD stmread ( imgdata . color . UniqueCameraModel , len , ifp ) ; imgdata . color . UniqueCameraModel [ sizeof ( imgdata . color . UniqueCameraModel ) - 1 ] = 0 ; # endif if ( model [ 0 ] ) break ; # ifndef LIBRAW_LIBRARY_BUILD fgets ( make , 64 , ifp ) ; # else strncpy ( make , imgdata . color . UniqueCameraModel , MIN ( len , sizeof ( imgdata . color . UniqueCameraModel ) ) ) ; # endif if ( ( cp = strchr ( make , '<S2SV_blank>' ) ) ) { strcpy ( model , cp + 1 ) ; * cp = 0 ; } break ; case 50710 : if ( filters == 9 ) break ; if ( len > 4 ) len = 4 ; colors = len ; fread ( cfa_pc , 1 , colors , ifp ) ; guess_cfa_pc : FORCC tab [ cfa_pc [ c ] ] = c ; cdesc [ c ] = 0 ; for ( i = 16 ; i -- ; ) filters = filters << 2 | tab [ cfa_pat [ i % plen ] ] ; filters -= ! filters ; break ; case 50711 : if ( get2 ( ) == 2 ) fuji_width = 1 ; break ; case 291 : case 50712 : # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . lineartable_offset = ftell ( ifp ) ; tiff_ifd [ ifd ] . lineartable_len = len ; # endif linear_table ( len ) ; break ; case 50713 : # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_levels . dng_cblack [ 4 ] = # endif cblack [ 4 ] = get2 ( ) ; # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_levels . dng_cblack [ 5 ] = # endif cblack [ 5 ] = get2 ( ) ; if ( cblack [ 4 ] * cblack [ 5 ] > ( sizeof ( cblack ) / sizeof ( cblack [ 0 ] ) - 6 ) ) # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_levels . dng_cblack [ 4 ] = tiff_ifd [ ifd ] . dng_levels . dng_cblack [ 5 ] = # endif cblack [ 4 ] = cblack [ 5 ] = 1 ; break ; # ifdef LIBRAW_LIBRARY_BUILD case 0xf00c : { unsigned fwb [ 4 ] ; FORC4 fwb [ c ] = get4 ( ) ; if ( fwb [ 3 ] < 0x100 ) { imgdata . color . WB_Coeffs [ fwb [ 3 ] ] [ 0 ] = fwb [ 1 ] ; imgdata . color . WB_Coeffs [ fwb [ 3 ] ] [ 1 ] = imgdata . color . WB_Coeffs [ fwb [ 3 ] ] [ 3 ] = fwb [ 0 ] ; imgdata . color . WB_Coeffs [ fwb [ 3 ] ] [ 2 ] = fwb [ 2 ] ; if ( ( fwb [ 3 ] == 17 ) && libraw_internal_data . unpacker_data . lenRAFData > 3 && libraw_internal_data . unpacker_data . lenRAFData < 10240000 ) { long long f_save = ftell ( ifp ) ; int fj , found = 0 ; ushort * rafdata = ( ushort * ) malloc ( sizeof ( ushort ) * libraw_internal_data . unpacker_data . lenRAFData ) ; fseek ( ifp , libraw_internal_data . unpacker_data . posRAFData , SEEK_SET ) ; fread ( rafdata , sizeof ( ushort ) , libraw_internal_data . unpacker_data . lenRAFData , ifp ) ; fseek ( ifp , f_save , SEEK_SET ) ; for ( int fi = 0 ; fi < ( libraw_internal_data . unpacker_data . lenRAFData - 3 ) ; fi ++ ) { if ( ( fwb [ 0 ] == rafdata [ fi ] ) && ( fwb [ 1 ] == rafdata [ fi + 1 ] ) && ( fwb [ 2 ] == rafdata [ fi + 2 ] ) ) { if ( rafdata [ fi - 15 ] != fwb [ 0 ] ) continue ; fi = fi - 15 ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FineWeather ] [ 1 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_FineWeather ] [ 3 ] = rafdata [ fi ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FineWeather ] [ 0 ] = rafdata [ fi + 1 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FineWeather ] [ 2 ] = rafdata [ fi + 2 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Shade ] [ 1 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_Shade ] [ 3 ] = rafdata [ fi + 3 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Shade ] [ 0 ] = rafdata [ fi + 4 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Shade ] [ 2 ] = rafdata [ fi + 5 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_D ] [ 1 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_D ] [ 3 ] = rafdata [ fi + 6 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_D ] [ 0 ] = rafdata [ fi + 7 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_D ] [ 2 ] = rafdata [ fi + 8 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_L ] [ 1 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_L ] [ 3 ] = rafdata [ fi + 9 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_L ] [ 0 ] = rafdata [ fi + 10 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_L ] [ 2 ] = rafdata [ fi + 11 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_W ] [ 1 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_W ] [ 3 ] = rafdata [ fi + 12 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_W ] [ 0 ] = rafdata [ fi + 13 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_FL_W ] [ 2 ] = rafdata [ fi + 14 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Tungsten ] [ 1 ] = imgdata . color . WB_Coeffs [ LIBRAW_WBI_Tungsten ] [ 3 ] = rafdata [ fi + 15 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Tungsten ] [ 0 ] = rafdata [ fi + 16 ] ; imgdata . color . WB_Coeffs [ LIBRAW_WBI_Tungsten ] [ 2 ] = rafdata [ fi + 17 ] ; fi += 111 ; for ( fj = fi ; fj < ( fi + 15 ) ; fj += 3 ) if ( rafdata [ fj ] != rafdata [ fi ] ) { found = 1 ; break ; } if ( found ) { int FujiCCT_K [ 31 ] = { 2500 , 2550 , 2650 , 2700 , 2800 , 2850 , 2950 , 3000 , 3100 , 3200 , 3300 , 3400 , 3600 , 3700 , 3800 , 4000 , 4200 , 4300 , 4500 , 4800 , 5000 , 5300 , 5600 , 5900 , 6300 , 6700 , 7100 , 7700 , 8300 , 9100 , 10000 } ; fj = fj - 93 ; for ( int iCCT = 0 ; iCCT < 31 ; iCCT ++ ) { imgdata . color . WBCT_Coeffs [ iCCT ] [ 0 ] = FujiCCT_K [ iCCT ] ; imgdata . color . WBCT_Coeffs [ iCCT ] [ 1 ] = rafdata [ iCCT * 3 + 1 + fj ] ; imgdata . color . WBCT_Coeffs [ iCCT ] [ 2 ] = imgdata . color . WBCT_Coeffs [ iCCT ] [ 4 ] = rafdata [ iCCT * 3 + fj ] ; imgdata . color . WBCT_Coeffs [ iCCT ] [ 3 ] = rafdata [ iCCT * 3 + 2 + fj ] ; } } free ( rafdata ) ; break ; } } } } FORC4 fwb [ c ] = get4 ( ) ; if ( fwb [ 3 ] < 0x100 ) { imgdata . color . WB_Coeffs [ fwb [ 3 ] ] [ 0 ] = fwb [ 1 ] ; imgdata . color . WB_Coeffs [ fwb [ 3 ] ] [ 1 ] = imgdata . color . WB_Coeffs [ fwb [ 3 ] ] [ 3 ] = fwb [ 0 ] ; imgdata . color . WB_Coeffs [ fwb [ 3 ] ] [ 2 ] = fwb [ 2 ] ; } } break ; # endif # ifdef LIBRAW_LIBRARY_BUILD case 50709 : stmread ( imgdata . color . LocalizedCameraModel , len , ifp ) ; break ; # endif case 61450 : cblack [ 4 ] = cblack [ 5 ] = MIN ( sqrt ( ( double ) len ) , 64 ) ; case 50714 : # ifdef LIBRAW_LIBRARY_BUILD if ( tiff_ifd [ ifd ] . samples > 1 && tiff_ifd [ ifd ] . samples == len ) { for ( i = 0 ; i < colors && i < 4 && i < len ; i ++ ) tiff_ifd [ ifd ] . dng_levels . dng_cblack [ i ] = cblack [ i ] = getreal ( type ) + 0.5 ; tiff_ifd [ ifd ] . dng_levels . dng_black = black = 0 ; } else # endif if ( ( cblack [ 4 ] * cblack [ 5 ] < 2 ) && len == 1 ) { # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_levels . dng_black = # endif black = getreal ( type ) ; } else if ( cblack [ 4 ] * cblack [ 5 ] <= len ) { FORC ( cblack [ 4 ] * cblack [ 5 ] ) cblack [ 6 + c ] = getreal ( type ) ; black = 0 ; FORC4 cblack [ c ] = 0 ; # ifdef LIBRAW_LIBRARY_BUILD if ( tag == 50714 ) { FORC ( cblack [ 4 ] * cblack [ 5 ] ) tiff_ifd [ ifd ] . dng_levels . dng_cblack [ 6 + c ] = cblack [ 6 + c ] ; tiff_ifd [ ifd ] . dng_levels . dng_black = 0 ; FORC4 tiff_ifd [ ifd ] . dng_levels . dng_cblack [ c ] = 0 ; } # endif } break ; case 50715 : case 50716 : for ( num = i = 0 ; i < len && i < 65536 ; i ++ ) num += getreal ( type ) ; black += num / len + 0.5 ; # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_levels . dng_black += num / len + 0.5 ; # endif break ; case 50717 : # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_levels . dng_whitelevel [ 0 ] = # endif maximum = getint ( type ) ; # ifdef LIBRAW_LIBRARY_BUILD if ( tiff_ifd [ ifd ] . samples > 1 ) for ( i = 1 ; i < colors && i < 4 && i < len ; i ++ ) tiff_ifd [ ifd ] . dng_levels . dng_whitelevel [ i ] = getint ( type ) ; # endif break ; case 50718 : pixel_aspect = getreal ( type ) ; pixel_aspect /= getreal ( type ) ; if ( pixel_aspect > 0.995 && pixel_aspect < 1.005 ) pixel_aspect = 1.0 ; break ; # ifdef LIBRAW_LIBRARY_BUILD case 50778 : tiff_ifd [ ifd ] . dng_color [ 0 ] . illuminant = get2 ( ) ; break ; case 50779 : tiff_ifd [ ifd ] . dng_color [ 1 ] . illuminant = get2 ( ) ; break ; # endif case 50721 : case 50722 : # ifdef LIBRAW_LIBRARY_BUILD i = tag == 50721 ? 0 : 1 ; # endif FORCC for ( j = 0 ; j < 3 ; j ++ ) { # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_color [ i ] . colormatrix [ c ] [ j ] = # endif cm [ c ] [ j ] = getreal ( type ) ; } use_cm = 1 ; break ; case 0xc714 : case 0xc715 : # ifdef LIBRAW_LIBRARY_BUILD i = tag == 0xc714 ? 0 : 1 ; # endif for ( j = 0 ; j < 3 ; j ++ ) FORCC { # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_color [ i ] . forwardmatrix [ j ] [ c ] = # endif fm [ j ] [ c ] = getreal ( type ) ; } break ; case 50723 : case 50724 : # ifdef LIBRAW_LIBRARY_BUILD j = tag == 50723 ? 0 : 1 ; # endif for ( i = 0 ; i < colors ; i ++ ) FORCC { # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_color [ j ] . calibration [ i ] [ c ] = # endif cc [ i ] [ c ] = getreal ( type ) ; } break ; case 50727 : FORCC { # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . dng_levels . analogbalance [ c ] = # endif ab [ c ] = getreal ( type ) ; } break ; case 50728 : FORCC asn [ c ] = getreal ( type ) ; break ; case 50729 : xyz [ 0 ] = getreal ( type ) ; xyz [ 1 ] = getreal ( type ) ; xyz [ 2 ] = 1 - xyz [ 0 ] - xyz [ 1 ] ; FORC3 xyz [ c ] /= d65_white [ c ] ; break ; # ifdef LIBRAW_LIBRARY_BUILD case 50730 : baseline_exposure = getreal ( type ) ; break ; # endif case 50740 : # ifdef LIBRAW_LIBRARY_BUILD { char mbuf [ 64 ] ; unsigned short makernote_found = 0 ; INT64 curr_pos , start_pos = ftell ( ifp ) ; unsigned MakN_order , m_sorder = order ; unsigned MakN_length ; unsigned pos_in_original_raw ; fread ( mbuf , 1 , 6 , ifp ) ; if ( ! strcmp ( mbuf , \"Adobe\" ) ) { order = 0x4d4d ; curr_pos = start_pos + 6 ; while ( curr_pos + 8 - start_pos <= len ) { fread ( mbuf , 1 , 4 , ifp ) ; curr_pos += 8 ; if ( ! strncmp ( mbuf , \"MakN\" , 4 ) ) { makernote_found = 1 ; MakN_length = get4 ( ) ; MakN_order = get2 ( ) ; pos_in_original_raw = get4 ( ) ; order = MakN_order ; parse_makernote_0xc634 ( curr_pos + 6 - pos_in_original_raw , 0 , AdobeDNG ) ; break ; } } } else { fread ( mbuf + 6 , 1 , 2 , ifp ) ; if ( ! strcmp ( mbuf , \"PENTAX<S2SV_blank>\" ) || ! strcmp ( mbuf , \"SAMSUNG\" ) ) { makernote_found = 1 ; fseek ( ifp , start_pos , SEEK_SET ) ; parse_makernote_0xc634 ( base , 0 , CameraDNG ) ; } } fseek ( ifp , start_pos , SEEK_SET ) ; order = m_sorder ; } # endif if ( dng_version ) break ; parse_minolta ( j = get4 ( ) + base ) ; fseek ( ifp , j , SEEK_SET ) ; parse_tiff_ifd ( base ) ; break ; case 50752 : read_shorts ( cr2_slice , 3 ) ; break ; case 50829 : top_margin = getint ( type ) ; left_margin = getint ( type ) ; height = getint ( type ) - top_margin ; width = getint ( type ) - left_margin ; break ; case 50830 : for ( i = 0 ; i < len && i < 32 ; i ++ ) ( ( int * ) mask ) [ i ] = getint ( type ) ; black = 0 ; break ; case 51009 : # ifdef LIBRAW_LIBRARY_BUILD tiff_ifd [ ifd ] . opcode2_offset = # endif meta_offset = ftell ( ifp ) ; break ; case 64772 : if ( len < 13 ) break ; fseek ( ifp , 16 , SEEK_CUR ) ; data_offset = get4 ( ) ; fseek ( ifp , 28 , SEEK_CUR ) ; data_offset += get4 ( ) ; load_raw = & CLASS packed_load_raw ; break ; case 65026 : if ( type == 2 ) fgets ( model2 , 64 , ifp ) ; } fseek ( ifp , save , SEEK_SET ) ; } if ( sony_length && sony_length < 10240000 && ( buf = ( unsigned * ) malloc ( sony_length ) ) ) { fseek ( ifp , sony_offset , SEEK_SET ) ; fread ( buf , sony_length , 1 , ifp ) ; sony_decrypt ( buf , sony_length / 4 , 1 , sony_key ) ; # ifndef LIBRAW_LIBRARY_BUILD sfp = ifp ; if ( ( ifp = tmpfile ( ) ) ) { fwrite ( buf , sony_length , 1 , ifp ) ; fseek ( ifp , 0 , SEEK_SET ) ; parse_tiff_ifd ( - sony_offset ) ; fclose ( ifp ) ; } ifp = sfp ; # else if ( ! ifp -> tempbuffer_open ( buf , sony_length ) ) { parse_tiff_ifd ( - sony_offset ) ; ifp -> tempbuffer_close ( ) ; } # endif free ( buf ) ; } for ( i = 0 ; i < colors ; i ++ ) FORCC cc [ i ] [ c ] *= ab [ i ] ; if ( use_cm ) { FORCC for ( i = 0 ; i < 3 ; i ++ ) for ( cam_xyz [ c ] [ i ] = j = 0 ; j < colors ; j ++ ) cam_xyz [ c ] [ i ] += cc [ c ] [ j ] * cm [ j ] [ i ] * xyz [ i ] ; cam_xyz_coeff ( cmatrix , cam_xyz ) ; } if ( asn [ 0 ] ) { cam_mul [ 3 ] = 0 ; FORCC cam_mul [ c ] = 1 / asn [ c ] ; } if ( ! use_cm ) FORCC pre_mul [ c ] /= cc [ c ] [ c ] ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ifd ++ ; # ifdef LIBRAW_LIBRARY_BUILD if ( ifd >= sizeof tiff_ifd / sizeof tiff_ifd [ 0 ] ) throw LIBRAW_EXCEPTION_IO_CORRUPT ; # endif <S2SV_ModStart> if ( len < 1 || len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5313\n\n```\nCWE-362 static int handle_emulation_failure ( struct kvm_vcpu * vcpu ) <S2SV_StartBug> { <S2SV_EndBug> ++ vcpu -> stat . insn_emulation_fail ; <S2SV_StartBug> trace_kvm_emulate_insn_failed ( vcpu ) ; <S2SV_EndBug> vcpu -> run -> exit_reason = KVM_EXIT_INTERNAL_ERROR ; vcpu -> run -> internal . suberror = KVM_INTERNAL_ERROR_EMULATION ; vcpu -> run -> internal . ndata = 0 ; <S2SV_StartBug> kvm_queue_exception ( vcpu , UD_VECTOR ) ; <S2SV_EndBug> <S2SV_StartBug> return EMULATE_FAIL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu ) { int r = EMULATE_DONE ; <S2SV_ModStart> vcpu ) ; if ( ! is_guest_mode ( vcpu ) ) { <S2SV_ModStart> = 0 ; r = EMULATE_FAIL ; } <S2SV_ModStart> ) ; return r <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2782\n\n```\nCWE-000 static int treo_attach ( struct usb_serial * serial ) { struct usb_serial_port * swap_port ; if ( ! ( ( le16_to_cpu ( serial -> dev -> descriptor . idVendor ) == HANDSPRING_VENDOR_ID ) || ( le16_to_cpu ( serial -> dev -> descriptor . idVendor ) == KYOCERA_VENDOR_ID ) ) || ( serial -> num_interrupt_in == 0 ) ) return 0 ; <S2SV_StartBug> # define COPY_PORT ( dest , src ) do { int i ; for ( i = 0 ; i < ARRAY_SIZE ( src -> read_urbs ) ; ++ i ) { dest -> read_urbs [ i ] = src -> read_urbs [ i ] ; dest -> read_urbs [ i ] -> context = dest ; dest -> bulk_in_buffers [ i ] = src -> bulk_in_buffers [ i ] ; } dest -> read_urb = src -> read_urb ; dest -> bulk_in_endpointAddress = src -> bulk_in_endpointAddress ; dest -> bulk_in_buffer = src -> bulk_in_buffer ; dest -> bulk_in_size = src -> bulk_in_size ; dest -> interrupt_in_urb = src -> interrupt_in_urb ; dest -> interrupt_in_urb -> context = dest ; dest -> interrupt_in_endpointAddress = src -> interrupt_in_endpointAddress ; dest -> interrupt_in_buffer = src -> interrupt_in_buffer ; } while ( 0 ) ; <S2SV_EndBug> swap_port = kmalloc ( sizeof ( * swap_port ) , GFP_KERNEL ) ; if ( ! swap_port ) return - ENOMEM ; COPY_PORT ( swap_port , serial -> port [ 0 ] ) ; COPY_PORT ( serial -> port [ 0 ] , serial -> port [ 1 ] ) ; COPY_PORT ( serial -> port [ 1 ] , swap_port ) ; kfree ( swap_port ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; if ( serial -> num_bulk_in < 2 || serial -> num_interrupt_in < 2 ) { dev_err ( & serial -> interface -> dev , \"missing<S2SV_blank>endpoints\\\\n\" ) ; return - ENODEV ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3236\n\n```\nCWE-200 static int vmci_transport_dgram_dequeue ( struct kiocb * kiocb , struct vsock_sock * vsk , struct msghdr * msg , size_t len , int flags ) { int err ; int noblock ; struct vmci_datagram * dg ; size_t payload_len ; struct sk_buff * skb ; noblock = flags & MSG_DONTWAIT ; if ( flags & MSG_OOB || flags & MSG_ERRQUEUE ) return - EOPNOTSUPP ; <S2SV_StartBug> err = 0 ; <S2SV_EndBug> skb = skb_recv_datagram ( & vsk -> sk , flags , noblock , & err ) ; if ( err ) return err ; if ( ! skb ) return - EAGAIN ; dg = ( struct vmci_datagram * ) skb -> data ; if ( ! dg ) goto out ; payload_len = dg -> payload_size ; if ( payload_len != skb -> len - sizeof ( * dg ) ) { err = - EINVAL ; goto out ; } if ( payload_len > len ) { payload_len = len ; msg -> msg_flags |= MSG_TRUNC ; } err = skb_copy_datagram_iovec ( skb , sizeof ( * dg ) , msg -> msg_iov , payload_len ) ; if ( err ) goto out ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> if ( msg -> msg_name ) { struct sockaddr_vm * vm_addr ; vm_addr = ( struct sockaddr_vm * ) msg -> msg_name ; vsock_addr_init ( vm_addr , dg -> src . context , dg -> src . resource ) ; msg -> msg_namelen = sizeof ( * vm_addr ) ; } err = payload_len ; out : skb_free_datagram ( & vsk -> sk , skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EOPNOTSUPP ; msg -> msg_namelen = 0 ; <S2SV_ModStart> goto out ; <S2SV_ModEnd> if ( msg\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-36280\n\n```\nCWE-125 l_int32 main ( int argc , char * * argv ) { L_DEWARP * dew1 , * dew2 ; L_DEWARPA * dewa ; PIX * pixs , * pixn , * pixg , * pixb , * pixd , * pixt1 , * pixt2 ; PIX * pixs2 , * pixn2 , * pixg2 , * pixb2 , * pixd2 ; setLeptDebugOK ( 1 ) ; lept_mkdir ( \"lept/model\" ) ; <S2SV_StartBug> pixs = pixRead ( \"cat.035.jpg\" ) ; <S2SV_EndBug> pixn = pixBackgroundNormSimple ( pixs , NULL , NULL ) ; pixg = pixConvertRGBToGray ( pixn , 0.5 , 0.3 , 0.2 ) ; pixb = pixThresholdToBinary ( pixg , 130 ) ; dewa = dewarpaCreate ( 2 , 30 , 1 , 10 , 30 ) ; dewarpaUseBothArrays ( dewa , 1 ) ; dew1 = dewarpCreate ( pixb , 35 ) ; dewarpaInsertDewarp ( dewa , dew1 ) ; dewarpBuildPageModel ( dew1 , \"/tmp/lept/model/dewarp_model1.pdf\" ) ; dewarpaApplyDisparity ( dewa , 35 , pixg , 200 , 0 , 0 , & pixd , \"/tmp/lept/model/dewarp_apply1.pdf\" ) ; lept_rmdir ( \"lept/dewtest\" ) ; lept_mkdir ( \"lept/dewtest\" ) ; pixWrite ( \"/tmp/lept/dewtest/001.jpg\" , pixs , IFF_JFIF_JPEG ) ; pixWrite ( \"/tmp/lept/dewtest/002.jpg\" , pixn , IFF_JFIF_JPEG ) ; pixWrite ( \"/tmp/lept/dewtest/003.jpg\" , pixg , IFF_JFIF_JPEG ) ; pixWrite ( \"/tmp/lept/dewtest/004.png\" , pixb , IFF_TIFF_G4 ) ; pixWrite ( \"/tmp/lept/dewtest/005.jpg\" , pixd , IFF_JFIF_JPEG ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0020.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/006.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0030.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/007.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0060.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/008.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0070.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/009.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewapply/002.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/010.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewapply/003.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/011.png\" , pixt1 , IFF_PNG ) ; pixt2 = pixThresholdToBinary ( pixt1 , 130 ) ; pixWrite ( \"/tmp/lept/dewtest/012.png\" , pixt2 , IFF_TIFF_G4 ) ; pixDestroy ( & pixt1 ) ; pixDestroy ( & pixt2 ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0041.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/013.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0042.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/014.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0051.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/015.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0052.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/016.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixs2 = pixRead ( \"cat.007.jpg\" ) ; pixn2 = pixBackgroundNormSimple ( pixs2 , NULL , NULL ) ; pixg2 = pixConvertRGBToGray ( pixn2 , 0.5 , 0.3 , 0.2 ) ; pixb2 = pixThresholdToBinary ( pixg2 , 130 ) ; dew2 = dewarpCreate ( pixb2 , 7 ) ; dewarpaInsertDewarp ( dewa , dew2 ) ; dewarpaInsertRefModels ( dewa , 0 , 1 ) ; dewarpaInfo ( stderr , dewa ) ; dewarpaApplyDisparity ( dewa , 7 , pixg2 , 200 , 0 , 0 , & pixd2 , \"/tmp/lept/model/dewarp_apply2.pdf\" ) ; dewarpaDestroy ( & dewa ) ; pixWrite ( \"/tmp/lept/dewtest/017.jpg\" , pixs2 , IFF_JFIF_JPEG ) ; pixWrite ( \"/tmp/lept/dewtest/018.jpg\" , pixg2 , IFF_JFIF_JPEG ) ; pixWrite ( \"/tmp/lept/dewtest/019.png\" , pixb2 , IFF_TIFF_G4 ) ; pixWrite ( \"/tmp/lept/dewtest/020.jpg\" , pixd2 , IFF_JFIF_JPEG ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0060.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/021.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewapply/002.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/022.png\" , pixt1 , IFF_PNG ) ; pixt2 = pixThresholdToBinary ( pixt1 , 130 ) ; pixWrite ( \"/tmp/lept/dewtest/023.png\" , pixt2 , IFF_TIFF_G4 ) ; pixDestroy ( & pixt1 ) ; pixDestroy ( & pixt2 ) ; pixt1 = pixRead ( \"/tmp/lept/dewmod/0070.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/024.png\" , pixt1 , IFF_PNG ) ; pixDestroy ( & pixt1 ) ; pixt1 = pixRead ( \"/tmp/lept/dewapply/003.png\" ) ; pixWrite ( \"/tmp/lept/dewtest/025.png\" , pixt1 , IFF_PNG ) ; pixt2 = pixThresholdToBinary ( pixt1 , 130 ) ; pixWrite ( \"/tmp/lept/dewtest/026.png\" , pixt2 , IFF_TIFF_G4 ) ; pixDestroy ( & pixt1 ) ; pixDestroy ( & pixt2 ) ; convertFilesToPdf ( \"/tmp/lept/dewtest\" , NULL , 135 , 1.0 , 0 , 0 , \"Dewarp<S2SV_blank>Test\" , \"/tmp/lept/dewarptest1.pdf\" ) ; <S2SV_StartBug> lept_stderr ( \"pdf<S2SV_blank>file<S2SV_blank>made:<S2SV_blank>/tmp/lept/model/dewarptest1.pdf\\\\n\" ) ; <S2SV_EndBug> lept_rmdir ( \"lept/dewmod\" ) ; lept_rmdir ( \"lept/dewtest\" ) ; pixDestroy ( & pixs ) ; pixDestroy ( & pixn ) ; pixDestroy ( & pixg ) ; pixDestroy ( & pixb ) ; pixDestroy ( & pixd ) ; pixDestroy ( & pixs2 ) ; pixDestroy ( & pixn2 ) ; pixDestroy ( & pixg2 ) ; pixDestroy ( & pixb2 ) ; pixDestroy ( & pixd2 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"lept/model\" ) ; lept_rmdir ( \"lept/dewmod\" ) ; lept_mkdir ( \"lept/dewmod\" ) ; <S2SV_ModStart> lept_stderr ( \"pdf<S2SV_blank>file<S2SV_blank>made:<S2SV_blank>/tmp/lept/model/dewarptest1.pdf\\\\n\" <S2SV_ModEnd> ) ; pixDestroy\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7515\n\n```\nCWE-000 static int aiptek_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct usb_device * usbdev = interface_to_usbdev ( intf ) ; struct usb_endpoint_descriptor * endpoint ; struct aiptek * aiptek ; struct input_dev * inputdev ; int i ; int speeds [ ] = { 0 , AIPTEK_PROGRAMMABLE_DELAY_50 , AIPTEK_PROGRAMMABLE_DELAY_400 , AIPTEK_PROGRAMMABLE_DELAY_25 , AIPTEK_PROGRAMMABLE_DELAY_100 , AIPTEK_PROGRAMMABLE_DELAY_200 , AIPTEK_PROGRAMMABLE_DELAY_300 } ; int err = - ENOMEM ; speeds [ 0 ] = programmableDelay ; aiptek = kzalloc ( sizeof ( struct aiptek ) , GFP_KERNEL ) ; inputdev = input_allocate_device ( ) ; if ( ! aiptek || ! inputdev ) { dev_warn ( & intf -> dev , \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>or<S2SV_blank>input<S2SV_blank>device\\\\n\" ) ; goto fail1 ; } aiptek -> data = usb_alloc_coherent ( usbdev , AIPTEK_PACKET_LENGTH , GFP_ATOMIC , & aiptek -> data_dma ) ; if ( ! aiptek -> data ) { dev_warn ( & intf -> dev , \"cannot<S2SV_blank>allocate<S2SV_blank>usb<S2SV_blank>buffer\\\\n\" ) ; goto fail1 ; } aiptek -> urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! aiptek -> urb ) { dev_warn ( & intf -> dev , \"cannot<S2SV_blank>allocate<S2SV_blank>urb\\\\n\" ) ; goto fail2 ; } aiptek -> inputdev = inputdev ; aiptek -> usbdev = usbdev ; aiptek -> intf = intf ; aiptek -> ifnum = intf -> altsetting [ 0 ] . desc . bInterfaceNumber ; aiptek -> inDelay = 0 ; aiptek -> endDelay = 0 ; aiptek -> previousJitterable = 0 ; aiptek -> lastMacro = - 1 ; aiptek -> curSetting . pointerMode = AIPTEK_POINTER_EITHER_MODE ; aiptek -> curSetting . coordinateMode = AIPTEK_COORDINATE_ABSOLUTE_MODE ; aiptek -> curSetting . toolMode = AIPTEK_TOOL_BUTTON_PEN_MODE ; aiptek -> curSetting . xTilt = AIPTEK_TILT_DISABLE ; aiptek -> curSetting . yTilt = AIPTEK_TILT_DISABLE ; aiptek -> curSetting . mouseButtonLeft = AIPTEK_MOUSE_LEFT_BUTTON ; aiptek -> curSetting . mouseButtonMiddle = AIPTEK_MOUSE_MIDDLE_BUTTON ; aiptek -> curSetting . mouseButtonRight = AIPTEK_MOUSE_RIGHT_BUTTON ; aiptek -> curSetting . stylusButtonUpper = AIPTEK_STYLUS_UPPER_BUTTON ; aiptek -> curSetting . stylusButtonLower = AIPTEK_STYLUS_LOWER_BUTTON ; aiptek -> curSetting . jitterDelay = jitterDelay ; aiptek -> curSetting . programmableDelay = programmableDelay ; aiptek -> newSetting = aiptek -> curSetting ; usb_make_path ( usbdev , aiptek -> features . usbPath , sizeof ( aiptek -> features . usbPath ) ) ; strlcat ( aiptek -> features . usbPath , \"/input0\" , sizeof ( aiptek -> features . usbPath ) ) ; inputdev -> name = \"Aiptek\" ; inputdev -> phys = aiptek -> features . usbPath ; usb_to_input_id ( usbdev , & inputdev -> id ) ; inputdev -> dev . parent = & intf -> dev ; input_set_drvdata ( inputdev , aiptek ) ; inputdev -> open = aiptek_open ; inputdev -> close = aiptek_close ; for ( i = 0 ; i < ARRAY_SIZE ( eventTypes ) ; ++ i ) __set_bit ( eventTypes [ i ] , inputdev -> evbit ) ; for ( i = 0 ; i < ARRAY_SIZE ( absEvents ) ; ++ i ) __set_bit ( absEvents [ i ] , inputdev -> absbit ) ; for ( i = 0 ; i < ARRAY_SIZE ( relEvents ) ; ++ i ) __set_bit ( relEvents [ i ] , inputdev -> relbit ) ; __set_bit ( MSC_SERIAL , inputdev -> mscbit ) ; for ( i = 0 ; i < ARRAY_SIZE ( buttonEvents ) ; ++ i ) __set_bit ( buttonEvents [ i ] , inputdev -> keybit ) ; for ( i = 0 ; i < ARRAY_SIZE ( macroKeyEvents ) ; ++ i ) __set_bit ( macroKeyEvents [ i ] , inputdev -> keybit ) ; input_set_abs_params ( inputdev , ABS_X , 0 , 2999 , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_Y , 0 , 2249 , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_PRESSURE , 0 , 511 , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_TILT_X , AIPTEK_TILT_MIN , AIPTEK_TILT_MAX , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_TILT_Y , AIPTEK_TILT_MIN , AIPTEK_TILT_MAX , 0 , 0 ) ; input_set_abs_params ( inputdev , ABS_WHEEL , AIPTEK_WHEEL_MIN , AIPTEK_WHEEL_MAX - 1 , 0 , 0 ) ; <S2SV_StartBug> endpoint = & intf -> altsetting [ 0 ] . endpoint [ 0 ] . desc ; <S2SV_EndBug> usb_fill_int_urb ( aiptek -> urb , aiptek -> usbdev , usb_rcvintpipe ( aiptek -> usbdev , endpoint -> bEndpointAddress ) , aiptek -> data , 8 , aiptek_irq , aiptek , endpoint -> bInterval ) ; aiptek -> urb -> transfer_dma = aiptek -> data_dma ; aiptek -> urb -> transfer_flags |= URB_NO_TRANSFER_DMA_MAP ; for ( i = 0 ; i < ARRAY_SIZE ( speeds ) ; ++ i ) { aiptek -> curSetting . programmableDelay = speeds [ i ] ; ( void ) aiptek_program_tablet ( aiptek ) ; if ( input_abs_get_max ( aiptek -> inputdev , ABS_X ) > 0 ) { dev_info ( & intf -> dev , \"Aiptek<S2SV_blank>using<S2SV_blank>%d<S2SV_blank>ms<S2SV_blank>programming<S2SV_blank>speed\\\\n\" , aiptek -> curSetting . programmableDelay ) ; break ; } } if ( i == ARRAY_SIZE ( speeds ) ) { dev_info ( & intf -> dev , \"Aiptek<S2SV_blank>tried<S2SV_blank>all<S2SV_blank>speeds,<S2SV_blank>no<S2SV_blank>sane<S2SV_blank>response\\\\n\" ) ; <S2SV_StartBug> goto fail3 ; <S2SV_EndBug> } usb_set_intfdata ( intf , aiptek ) ; err = sysfs_create_group ( & intf -> dev . kobj , & aiptek_attribute_group ) ; if ( err ) { dev_warn ( & intf -> dev , \"cannot<S2SV_blank>create<S2SV_blank>sysfs<S2SV_blank>group<S2SV_blank>err:<S2SV_blank>%d\\\\n\" , err ) ; goto fail3 ; } err = input_register_device ( aiptek -> inputdev ) ; if ( err ) { dev_warn ( & intf -> dev , \"input_register_device<S2SV_blank>returned<S2SV_blank>err:<S2SV_blank>%d\\\\n\" , err ) ; goto fail4 ; } return 0 ; fail4 : sysfs_remove_group ( & intf -> dev . kobj , & aiptek_attribute_group ) ; fail3 : usb_free_urb ( aiptek -> urb ) ; fail2 : usb_free_coherent ( usbdev , AIPTEK_PACKET_LENGTH , aiptek -> data , aiptek -> data_dma ) ; fail1 : usb_set_intfdata ( intf , NULL ) ; input_free_device ( inputdev ) ; kfree ( aiptek ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; if ( intf -> altsetting [ 0 ] . desc . bNumEndpoints < 1 ) { dev_err ( & intf -> dev , \"interface<S2SV_blank>has<S2SV_blank>%d<S2SV_blank>endpoints,<S2SV_blank>but<S2SV_blank>must<S2SV_blank>have<S2SV_blank>minimum<S2SV_blank>1\\\\n\" , intf -> altsetting [ 0 ] . desc . bNumEndpoints ) ; err = - EINVAL ; goto fail3 ; } <S2SV_ModStart> \"Aiptek<S2SV_blank>tried<S2SV_blank>all<S2SV_blank>speeds,<S2SV_blank>no<S2SV_blank>sane<S2SV_blank>response\\\\n\" ) ; err = - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 static long mem_seek ( jas_stream_obj_t * obj , long offset , int origin ) { jas_stream_memobj_t * m = ( jas_stream_memobj_t * ) obj ; <S2SV_StartBug> long newpos ; <S2SV_EndBug> JAS_DBGLOG ( 100 , ( \"mem_seek(%p,<S2SV_blank>%ld,<S2SV_blank>%d)\\\\n\" , obj , offset , origin ) ) ; switch ( origin ) { case SEEK_SET : newpos = offset ; break ; case SEEK_END : newpos = m -> len_ - offset ; break ; case SEEK_CUR : newpos = m -> pos_ + offset ; break ; default : abort ( ) ; break ; } if ( newpos < 0 ) { return - 1 ; } m -> pos_ = newpos ; return m -> pos_ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) obj ; size_t <S2SV_ModEnd> newpos ; JAS_DBGLOG\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 void set_content_type ( HttpResponse res , const char * mime ) { <S2SV_StartBug> set_header ( res , \"Content-Type\" , mime ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , \"Content-Type\" , \"%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7441\n\n```\nCWE-399 void serveloop ( GArray * servers ) { struct sockaddr_storage addrin ; socklen_t addrinlen = sizeof ( addrin ) ; int i ; int max ; fd_set mset ; fd_set rset ; max = 0 ; FD_ZERO ( & mset ) ; for ( i = 0 ; i < servers -> len ; i ++ ) { int sock ; if ( ( sock = ( g_array_index ( servers , SERVER , i ) ) . socket ) >= 0 ) { FD_SET ( sock , & mset ) ; max = sock > max ? sock : max ; } } for ( i = 0 ; i < modernsocks -> len ; i ++ ) { int sock = g_array_index ( modernsocks , int , i ) ; FD_SET ( sock , & mset ) ; max = sock > max ? sock : max ; } for ( ; ; ) { if ( is_sighup_caught ) { int n ; GError * gerror = NULL ; msg ( LOG_INFO , \"reconfiguration<S2SV_blank>request<S2SV_blank>received\" ) ; is_sighup_caught = 0 ; n = append_new_servers ( servers , & gerror ) ; if ( n == - 1 ) msg ( LOG_ERR , \"failed<S2SV_blank>to<S2SV_blank>append<S2SV_blank>new<S2SV_blank>servers:<S2SV_blank>%s\" , gerror -> message ) ; for ( i = servers -> len - n ; i < servers -> len ; ++ i ) { const SERVER server = g_array_index ( servers , SERVER , i ) ; if ( server . socket >= 0 ) { FD_SET ( server . socket , & mset ) ; max = server . socket > max ? server . socket : max ; } msg ( LOG_INFO , \"reconfigured<S2SV_blank>new<S2SV_blank>server:<S2SV_blank>%s\" , server . servename ) ; } } memcpy ( & rset , & mset , sizeof ( fd_set ) ) ; if ( select ( max + 1 , & rset , NULL , NULL , NULL ) > 0 ) { <S2SV_StartBug> int net ; <S2SV_EndBug> DEBUG ( \"accept,<S2SV_blank>\" ) ; for ( i = 0 ; i < modernsocks -> len ; i ++ ) { int sock = g_array_index ( modernsocks , int , i ) ; if ( ! FD_ISSET ( sock , & rset ) ) { continue ; } <S2SV_StartBug> CLIENT * client ; <S2SV_EndBug> <S2SV_StartBug> if ( ( net = accept ( sock , ( struct sockaddr * ) & addrin , & addrinlen ) ) < 0 ) { <S2SV_EndBug> err_nonfatal ( \"accept:<S2SV_blank>%m\" ) ; continue ; } <S2SV_StartBug> client = negotiate ( net , NULL , servers , NEG_INIT | NEG_MODERN ) ; <S2SV_EndBug> if ( ! client ) { close ( net ) ; continue ; } handle_connection ( servers , net , client -> server , client ) ; } for ( i = 0 ; i < servers -> len ; i ++ ) { SERVER * serve ; serve = & ( g_array_index ( servers , SERVER , i ) ) ; if ( serve -> socket < 0 ) { continue ; } if ( FD_ISSET ( serve -> socket , & rset ) ) { if ( ( net = accept ( serve -> socket , ( struct sockaddr * ) & addrin , & addrinlen ) ) < 0 ) { err_nonfatal ( \"accept:<S2SV_blank>%m\" ) ; continue ; } handle_connection ( servers , net , serve , NULL ) ; } } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { <S2SV_ModEnd> DEBUG ( \"accept,<S2SV_blank>\" <S2SV_ModStart> continue ; } handle_modern_connection ( servers , sock ) ; } for ( i = 0 ; i < servers -> len ; i ++ ) { int net ; SERVER * serve ; serve = & ( g_array_index ( servers , SERVER , i ) ) ; if ( serve -> socket < 0 ) { continue ; } if ( FD_ISSET ( serve -> socket , & rset ) ) { <S2SV_ModEnd> if ( ( <S2SV_ModStart> = accept ( serve -> socket <S2SV_ModEnd> , ( struct <S2SV_ModStart> continue ; } handle_connection ( servers , net , serve , NULL <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3062\n\n```\nCWE-119 static int mov_read_dref ( MOVContext * c , AVIOContext * pb , MOVAtom atom ) { AVStream * st ; MOVStreamContext * sc ; int entries , i , j ; if ( c -> fc -> nb_streams < 1 ) return 0 ; st = c -> fc -> streams [ c -> fc -> nb_streams - 1 ] ; sc = st -> priv_data ; avio_rb32 ( pb ) ; entries = avio_rb32 ( pb ) ; if ( entries >= UINT_MAX / sizeof ( * sc -> drefs ) ) return AVERROR_INVALIDDATA ; av_free ( sc -> drefs ) ; <S2SV_StartBug> sc -> drefs = av_mallocz ( entries * sizeof ( * sc -> drefs ) ) ; <S2SV_EndBug> if ( ! sc -> drefs ) return AVERROR ( ENOMEM ) ; sc -> drefs_count = entries ; for ( i = 0 ; i < sc -> drefs_count ; i ++ ) { MOVDref * dref = & sc -> drefs [ i ] ; uint32_t size = avio_rb32 ( pb ) ; int64_t next = avio_tell ( pb ) + size - 4 ; if ( size < 12 ) return AVERROR_INVALIDDATA ; dref -> type = avio_rl32 ( pb ) ; avio_rb32 ( pb ) ; av_dlog ( c -> fc , \"type<S2SV_blank>%.4s<S2SV_blank>size<S2SV_blank>%d\\\\n\" , ( char * ) & dref -> type , size ) ; if ( dref -> type == MKTAG ( 'a' , 'l' , 'i' , 's' ) && size > 150 ) { uint16_t volume_len , len ; int16_t type ; avio_skip ( pb , 10 ) ; volume_len = avio_r8 ( pb ) ; volume_len = FFMIN ( volume_len , 27 ) ; avio_read ( pb , dref -> volume , 27 ) ; dref -> volume [ volume_len ] = 0 ; av_log ( c -> fc , AV_LOG_DEBUG , \"volume<S2SV_blank>%s,<S2SV_blank>len<S2SV_blank>%d\\\\n\" , dref -> volume , volume_len ) ; avio_skip ( pb , 12 ) ; len = avio_r8 ( pb ) ; len = FFMIN ( len , 63 ) ; avio_read ( pb , dref -> filename , 63 ) ; dref -> filename [ len ] = 0 ; av_log ( c -> fc , AV_LOG_DEBUG , \"filename<S2SV_blank>%s,<S2SV_blank>len<S2SV_blank>%d\\\\n\" , dref -> filename , len ) ; avio_skip ( pb , 16 ) ; dref -> nlvl_from = avio_rb16 ( pb ) ; dref -> nlvl_to = avio_rb16 ( pb ) ; av_log ( c -> fc , AV_LOG_DEBUG , \"nlvl<S2SV_blank>from<S2SV_blank>%d,<S2SV_blank>nlvl<S2SV_blank>to<S2SV_blank>%d\\\\n\" , dref -> nlvl_from , dref -> nlvl_to ) ; avio_skip ( pb , 16 ) ; for ( type = 0 ; type != - 1 && avio_tell ( pb ) < next ; ) { if ( url_feof ( pb ) ) return AVERROR_EOF ; type = avio_rb16 ( pb ) ; len = avio_rb16 ( pb ) ; av_log ( c -> fc , AV_LOG_DEBUG , \"type<S2SV_blank>%d,<S2SV_blank>len<S2SV_blank>%d\\\\n\" , type , len ) ; if ( len & 1 ) len += 1 ; if ( type == 2 ) { av_free ( dref -> path ) ; dref -> path = av_mallocz ( len + 1 ) ; if ( ! dref -> path ) return AVERROR ( ENOMEM ) ; avio_read ( pb , dref -> path , len ) ; if ( len > volume_len && ! strncmp ( dref -> path , dref -> volume , volume_len ) ) { len -= volume_len ; memmove ( dref -> path , dref -> path + volume_len , len ) ; dref -> path [ len ] = 0 ; } for ( j = 0 ; j < len ; j ++ ) if ( dref -> path [ j ] == ':' ) dref -> path [ j ] = '/' ; av_log ( c -> fc , AV_LOG_DEBUG , \"path<S2SV_blank>%s\\\\n\" , dref -> path ) ; } else if ( type == 0 ) { av_free ( dref -> dir ) ; dref -> dir = av_malloc ( len + 1 ) ; if ( ! dref -> dir ) return AVERROR ( ENOMEM ) ; avio_read ( pb , dref -> dir , len ) ; dref -> dir [ len ] = 0 ; for ( j = 0 ; j < len ; j ++ ) if ( dref -> dir [ j ] == ':' ) dref -> dir [ j ] = '/' ; av_log ( c -> fc , AV_LOG_DEBUG , \"dir<S2SV_blank>%s\\\\n\" , dref -> dir ) ; } else avio_skip ( pb , len ) ; } } avio_seek ( pb , next , SEEK_SET ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sc -> drefs_count = 0 ; sc ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7417\n\n```\nCWE-20 static zval * * spl_array_get_dimension_ptr_ptr ( int check_inherited , zval * object , zval * offset , int type TSRMLS_DC ) { spl_array_object * intern = ( spl_array_object * ) zend_object_store_get_object ( object TSRMLS_CC ) ; zval * * retval ; char * key ; uint len ; long index ; HashTable * ht = spl_array_get_hash_table ( intern , 0 TSRMLS_CC ) ; <S2SV_StartBug> if ( ! offset ) { <S2SV_EndBug> return & EG ( uninitialized_zval_ptr ) ; } if ( ( type == BP_VAR_W || type == BP_VAR_RW ) && ( ht -> nApplyCount > 0 ) ) { zend_error ( E_WARNING , \"Modification<S2SV_blank>of<S2SV_blank>ArrayObject<S2SV_blank>during<S2SV_blank>sorting<S2SV_blank>is<S2SV_blank>prohibited\" ) ; return & EG ( error_zval_ptr ) ; ; } switch ( Z_TYPE_P ( offset ) ) { case IS_STRING : key = Z_STRVAL_P ( offset ) ; len = Z_STRLEN_P ( offset ) + 1 ; string_offest : if ( zend_symtable_find ( ht , key , len , ( void * * ) & retval ) == FAILURE ) { switch ( type ) { case BP_VAR_R : zend_error ( E_NOTICE , \"Undefined<S2SV_blank>index:<S2SV_blank>%s\" , key ) ; case BP_VAR_UNSET : case BP_VAR_IS : retval = & EG ( uninitialized_zval_ptr ) ; break ; case BP_VAR_RW : zend_error ( E_NOTICE , \"Undefined<S2SV_blank>index:<S2SV_blank>%s\" , key ) ; case BP_VAR_W : { zval * value ; ALLOC_INIT_ZVAL ( value ) ; zend_symtable_update ( ht , key , len , ( void * * ) & value , sizeof ( void * ) , ( void * * ) & retval ) ; } } } return retval ; case IS_NULL : key = \"\" ; len = 1 ; goto string_offest ; case IS_RESOURCE : zend_error ( E_STRICT , \"Resource<S2SV_blank>ID#%ld<S2SV_blank>used<S2SV_blank>as<S2SV_blank>offset,<S2SV_blank>casting<S2SV_blank>to<S2SV_blank>integer<S2SV_blank>(%ld)\" , Z_LVAL_P ( offset ) , Z_LVAL_P ( offset ) ) ; case IS_DOUBLE : case IS_BOOL : case IS_LONG : if ( offset -> type == IS_DOUBLE ) { index = ( long ) Z_DVAL_P ( offset ) ; } else { index = Z_LVAL_P ( offset ) ; } if ( zend_hash_index_find ( ht , index , ( void * * ) & retval ) == FAILURE ) { switch ( type ) { case BP_VAR_R : zend_error ( E_NOTICE , \"Undefined<S2SV_blank>offset:<S2SV_blank>%ld\" , index ) ; case BP_VAR_UNSET : case BP_VAR_IS : retval = & EG ( uninitialized_zval_ptr ) ; break ; case BP_VAR_RW : zend_error ( E_NOTICE , \"Undefined<S2SV_blank>offset:<S2SV_blank>%ld\" , index ) ; case BP_VAR_W : { zval * value ; ALLOC_INIT_ZVAL ( value ) ; zend_hash_index_update ( ht , index , ( void * * ) & value , sizeof ( void * ) , ( void * * ) & retval ) ; } } } return retval ; default : zend_error ( E_WARNING , \"Illegal<S2SV_blank>offset<S2SV_blank>type\" ) ; return ( type == BP_VAR_W || type == BP_VAR_RW ) ? & EG ( error_zval_ptr ) : & EG ( uninitialized_zval_ptr ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! offset || ! ht\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5195\n\n```\nCWE-362 static int faultin_page ( struct task_struct * tsk , struct vm_area_struct * vma , unsigned long address , unsigned int * flags , int * nonblocking ) { unsigned int fault_flags = 0 ; int ret ; if ( ( * flags & ( FOLL_POPULATE | FOLL_MLOCK ) ) == FOLL_MLOCK ) return - ENOENT ; if ( ( * flags & FOLL_POPULATE ) && ( stack_guard_page_start ( vma , address ) || stack_guard_page_end ( vma , address + PAGE_SIZE ) ) ) return - ENOENT ; if ( * flags & FOLL_WRITE ) fault_flags |= FAULT_FLAG_WRITE ; if ( * flags & FOLL_REMOTE ) fault_flags |= FAULT_FLAG_REMOTE ; if ( nonblocking ) fault_flags |= FAULT_FLAG_ALLOW_RETRY ; if ( * flags & FOLL_NOWAIT ) fault_flags |= FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_RETRY_NOWAIT ; if ( * flags & FOLL_TRIED ) { VM_WARN_ON_ONCE ( fault_flags & FAULT_FLAG_ALLOW_RETRY ) ; fault_flags |= FAULT_FLAG_TRIED ; } ret = handle_mm_fault ( vma , address , fault_flags ) ; if ( ret & VM_FAULT_ERROR ) { if ( ret & VM_FAULT_OOM ) return - ENOMEM ; if ( ret & ( VM_FAULT_HWPOISON | VM_FAULT_HWPOISON_LARGE ) ) return * flags & FOLL_HWPOISON ? - EHWPOISON : - EFAULT ; if ( ret & ( VM_FAULT_SIGBUS | VM_FAULT_SIGSEGV ) ) return - EFAULT ; BUG ( ) ; } if ( tsk ) { if ( ret & VM_FAULT_MAJOR ) tsk -> maj_flt ++ ; else tsk -> min_flt ++ ; } if ( ret & VM_FAULT_RETRY ) { if ( nonblocking ) * nonblocking = 0 ; return - EBUSY ; } if ( ( ret & VM_FAULT_WRITE ) && ! ( vma -> vm_flags & VM_WRITE ) ) <S2SV_StartBug> * flags &= ~ FOLL_WRITE ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) * flags |= FOLL_COW <S2SV_ModEnd> ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13030\n\n```\nCWE-125 static void pimv1_join_prune_print ( netdissect_options * ndo , register const u_char * bp , register u_int len ) { int ngroups , njoin , nprune ; int njp ; if ( ND_TTEST2 ( bp [ 0 ] , 30 ) && bp [ 11 ] == 1 && ( ( njoin = EXTRACT_16BITS ( & bp [ 20 ] ) ) + EXTRACT_16BITS ( & bp [ 22 ] ) ) == 1 ) { int hold ; ND_PRINT ( ( ndo , \"<S2SV_blank>RPF<S2SV_blank>%s<S2SV_blank>\" , ipaddr_string ( ndo , bp ) ) ) ; hold = EXTRACT_16BITS ( & bp [ 6 ] ) ; if ( hold != 180 ) { ND_PRINT ( ( ndo , \"Hold<S2SV_blank>\" ) ) ; unsigned_relts_print ( ndo , hold ) ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%s/%d,<S2SV_blank>%s\" , njoin ? \"Join\" : \"Prune\" , ipaddr_string ( ndo , & bp [ 26 ] ) , bp [ 25 ] & 0x3f , ipaddr_string ( ndo , & bp [ 12 ] ) ) ) ; if ( EXTRACT_32BITS ( & bp [ 16 ] ) != 0xffffffff ) ND_PRINT ( ( ndo , \"/%s\" , ipaddr_string ( ndo , & bp [ 16 ] ) ) ) ; ND_PRINT ( ( ndo , \")<S2SV_blank>%s%s<S2SV_blank>%s\" , ( bp [ 24 ] & 0x01 ) ? \"Sparse\" : \"Dense\" , ( bp [ 25 ] & 0x80 ) ? \"<S2SV_blank>WC\" : \"\" , ( bp [ 25 ] & 0x40 ) ? \"RP\" : \"SPT\" ) ) ; return ; } <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , sizeof ( struct in_addr ) ) ; <S2SV_EndBug> if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>Upstream<S2SV_blank>Nbr:<S2SV_blank>%s\" , ipaddr_string ( ndo , bp ) ) ) ; <S2SV_StartBug> ND_TCHECK2 ( bp [ 6 ] , 2 ) ; <S2SV_EndBug> if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>Hold<S2SV_blank>time:<S2SV_blank>\" ) ) ; <S2SV_StartBug> unsigned_relts_print ( ndo , EXTRACT_16BITS ( & bp [ 6 ] ) ) ; <S2SV_EndBug> if ( ndo -> ndo_vflag < 2 ) return ; <S2SV_StartBug> bp += 8 ; <S2SV_EndBug> <S2SV_StartBug> len -= 8 ; <S2SV_EndBug> ND_TCHECK2 ( bp [ 0 ] , 4 ) ; ngroups = bp [ 3 ] ; bp += 4 ; len -= 4 ; while ( ngroups -- ) { <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , sizeof ( struct in_addr ) ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\tGroup:<S2SV_blank>%s\" , ipaddr_string ( ndo , bp ) ) ) ; <S2SV_StartBug> ND_TCHECK2 ( bp [ 4 ] , sizeof ( struct in_addr ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( EXTRACT_32BITS ( & bp [ 4 ] ) != 0xffffffff ) <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"/%s\" , ipaddr_string ( ndo , & bp [ 4 ] ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> ND_TCHECK2 ( bp [ 8 ] , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> njoin = EXTRACT_16BITS ( & bp [ 8 ] ) ; <S2SV_EndBug> <S2SV_StartBug> nprune = EXTRACT_16BITS ( & bp [ 10 ] ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>joined:<S2SV_blank>%d<S2SV_blank>pruned:<S2SV_blank>%d\" , njoin , nprune ) ) ; <S2SV_StartBug> bp += 12 ; <S2SV_EndBug> <S2SV_StartBug> len -= 12 ; <S2SV_EndBug> for ( njp = 0 ; njp < ( njoin + nprune ) ; njp ++ ) { const char * type ; if ( njp < njoin ) type = \"Join<S2SV_blank>\" ; else type = \"Prune\" ; <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , 6 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t%s<S2SV_blank>%s%s%s%s/%d\" , type , ( bp [ 0 ] & 0x01 ) ? \"Sparse<S2SV_blank>\" : \"Dense<S2SV_blank>\" , ( bp [ 1 ] & 0x80 ) ? \"WC<S2SV_blank>\" : \"\" , ( bp [ 1 ] & 0x40 ) ? \"RP<S2SV_blank>\" : \"SPT<S2SV_blank>\" , ipaddr_string ( ndo , & bp [ 2 ] ) , bp [ 1 ] & 0x3f ) ) ; bp += 6 ; len -= 6 ; } } return ; trunc : ND_PRINT ( ( ndo , \"[|pim]\" ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } if ( len < sizeof ( struct in_addr ) ) goto trunc ; <S2SV_ModStart> ) ) ; bp += 4 ; len -= 4 ; if ( len < 4 ) goto trunc ; <S2SV_ModStart> ( bp [ 2 <S2SV_ModEnd> ] , 2 <S2SV_ModStart> & bp [ 2 <S2SV_ModEnd> ] ) ) <S2SV_ModStart> ; bp += 4 <S2SV_ModEnd> ; len -= <S2SV_ModStart> ; len -= 4 ; if ( len < 4 ) goto trunc <S2SV_ModEnd> ; ND_TCHECK2 ( <S2SV_ModStart> -- ) { if ( len < 4 ) goto trunc ; <S2SV_ModStart> ) ) ; bp += 4 ; len -= 4 ; if ( len < 4 ) goto trunc ; <S2SV_ModStart> ( bp [ 0 <S2SV_ModEnd> ] , sizeof <S2SV_ModStart> & bp [ 0 <S2SV_ModEnd> ] ) != <S2SV_ModStart> & bp [ 0 ] ) ) ) ; bp += 4 ; len -= 4 ; if ( len < 4 ) goto trunc <S2SV_ModEnd> ; ND_TCHECK2 ( <S2SV_ModStart> ( bp [ 0 <S2SV_ModEnd> ] , 4 <S2SV_ModStart> & bp [ 0 <S2SV_ModEnd> ] ) ; <S2SV_ModStart> & bp [ 2 <S2SV_ModEnd> ] ) ; <S2SV_ModStart> ; bp += 4 <S2SV_ModEnd> ; len -= <S2SV_ModStart> ; len -= 4 <S2SV_ModEnd> ; for ( <S2SV_ModStart> = \"Prune\" ; if ( len < 6 ) goto trunc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 <S2SV_StartBug> static void sas_destruct_devices ( struct work_struct * work ) <S2SV_EndBug> { <S2SV_StartBug> struct domain_device * dev , * n ; <S2SV_EndBug> struct sas_discovery_event * ev = to_sas_discovery_event ( work ) ; struct asd_sas_port * port = ev -> port ; clear_bit ( DISCE_DESTRUCT , & port -> disc . pending ) ; list_for_each_entry_safe ( dev , n , & port -> destroy_list , disco_list_node ) { list_del_init ( & dev -> disco_list_node ) ; sas_remove_children ( & dev -> rphy -> dev ) ; sas_rphy_delete ( dev -> rphy ) ; sas_unregister_common_dev ( port , dev ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> void sas_destruct_devices ( <S2SV_ModStart> sas_destruct_devices ( struct asd_sas_port * port <S2SV_ModEnd> ) { struct <S2SV_ModStart> , * n <S2SV_ModEnd> ; list_for_each_entry_safe (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7166\n\n```\nCWE-399 static int choose_filters ( struct archive_read * a ) { <S2SV_StartBug> int number_bidders , i , bid , best_bid ; <S2SV_EndBug> struct archive_read_filter_bidder * bidder , * best_bidder ; struct archive_read_filter * filter ; ssize_t avail ; int r ; <S2SV_StartBug> for ( ; ; ) { <S2SV_EndBug> number_bidders = sizeof ( a -> bidders ) / sizeof ( a -> bidders [ 0 ] ) ; best_bid = 0 ; best_bidder = NULL ; bidder = a -> bidders ; for ( i = 0 ; i < number_bidders ; i ++ , bidder ++ ) { if ( bidder -> bid != NULL ) { bid = ( bidder -> bid ) ( bidder , a -> filter ) ; if ( bid > best_bid ) { best_bid = bid ; best_bidder = bidder ; } } } if ( best_bidder == NULL ) { __archive_read_filter_ahead ( a -> filter , 1 , & avail ) ; if ( avail < 0 ) { __archive_read_close_filters ( a ) ; __archive_read_free_filters ( a ) ; return ( ARCHIVE_FATAL ) ; } a -> archive . compression_name = a -> filter -> name ; a -> archive . compression_code = a -> filter -> code ; return ( ARCHIVE_OK ) ; } filter = ( struct archive_read_filter * ) calloc ( 1 , sizeof ( * filter ) ) ; if ( filter == NULL ) return ( ARCHIVE_FATAL ) ; filter -> bidder = best_bidder ; filter -> archive = a ; filter -> upstream = a -> filter ; a -> filter = filter ; r = ( best_bidder -> init ) ( a -> filter ) ; if ( r != ARCHIVE_OK ) { __archive_read_close_filters ( a ) ; __archive_read_free_filters ( a ) ; return ( ARCHIVE_FATAL ) ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bid , best_bid , n <S2SV_ModStart> ; for ( n = 0 ; n < 25 ; ++ n <S2SV_ModEnd> ) { number_bidders <S2SV_ModStart> ; } } archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Input<S2SV_blank>requires<S2SV_blank>too<S2SV_blank>many<S2SV_blank>filters<S2SV_blank>for<S2SV_blank>decoding\" ) ; return ( ARCHIVE_FATAL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8785\n\n```\nCWE-399 static ssize_t fuse_fill_write_pages ( struct fuse_req * req , struct address_space * mapping , struct iov_iter * ii , loff_t pos ) { struct fuse_conn * fc = get_fuse_conn ( mapping -> host ) ; unsigned offset = pos & ( PAGE_CACHE_SIZE - 1 ) ; size_t count = 0 ; int err ; req -> in . argpages = 1 ; req -> page_descs [ 0 ] . offset = offset ; do { size_t tmp ; struct page * page ; pgoff_t index = pos >> PAGE_CACHE_SHIFT ; size_t bytes = min_t ( size_t , PAGE_CACHE_SIZE - offset , iov_iter_count ( ii ) ) ; bytes = min_t ( size_t , bytes , fc -> max_write - count ) ; again : err = - EFAULT ; if ( iov_iter_fault_in_readable ( ii , bytes ) ) break ; err = - ENOMEM ; page = grab_cache_page_write_begin ( mapping , index , 0 ) ; if ( ! page ) break ; if ( mapping_writably_mapped ( mapping ) ) flush_dcache_page ( page ) ; tmp = iov_iter_copy_from_user_atomic ( page , ii , offset , bytes ) ; <S2SV_StartBug> flush_dcache_page ( page ) ; <S2SV_EndBug> if ( ! tmp ) { unlock_page ( page ) ; page_cache_release ( page ) ; bytes = min ( bytes , iov_iter_single_seg_count ( ii ) ) ; goto again ; } err = 0 ; req -> pages [ req -> num_pages ] = page ; req -> page_descs [ req -> num_pages ] . length = tmp ; req -> num_pages ++ ; <S2SV_StartBug> iov_iter_advance ( ii , tmp ) ; <S2SV_EndBug> count += tmp ; pos += tmp ; offset += tmp ; if ( offset == PAGE_CACHE_SIZE ) offset = 0 ; if ( ! fc -> big_writes ) break ; } while ( iov_iter_count ( ii ) && count < fc -> max_write && req -> num_pages < req -> max_pages && offset == 0 ) ; return count > 0 ? count : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flush_dcache_page ( page ) ; iov_iter_advance ( ii , tmp <S2SV_ModStart> num_pages ++ ; <S2SV_ModEnd> count += tmp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 void WT_Interpolate ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame ) { EAS_PCM * pOutputBuffer ; EAS_I32 phaseInc ; EAS_I32 phaseFrac ; EAS_I32 acc0 ; const EAS_SAMPLE * pSamples ; const EAS_SAMPLE * loopEnd ; EAS_I32 samp1 ; EAS_I32 samp2 ; EAS_I32 numSamples ; <S2SV_StartBug> numSamples = pWTIntFrame -> numSamples ; <S2SV_EndBug> pOutputBuffer = pWTIntFrame -> pAudioBuffer ; loopEnd = ( const EAS_SAMPLE * ) pWTVoice -> loopEnd + 1 ; pSamples = ( const EAS_SAMPLE * ) pWTVoice -> phaseAccum ; phaseFrac = pWTVoice -> phaseFrac ; phaseInc = pWTIntFrame -> frame . phaseIncrement ; # if defined ( _8_BIT_SAMPLES ) samp1 = pSamples [ 0 ] << 8 ; samp2 = pSamples [ 1 ] << 8 ; # else samp1 = pSamples [ 0 ] ; samp2 = pSamples [ 1 ] ; # endif while ( numSamples -- ) { acc0 = samp2 - samp1 ; acc0 = acc0 * phaseFrac ; acc0 = samp1 + ( acc0 >> NUM_PHASE_FRAC_BITS ) ; * pOutputBuffer ++ = ( EAS_I16 ) ( acc0 >> 2 ) ; phaseFrac += phaseInc ; acc0 = phaseFrac >> NUM_PHASE_FRAC_BITS ; if ( acc0 > 0 ) { pSamples += acc0 ; phaseFrac = ( EAS_I32 ) ( ( EAS_U32 ) phaseFrac & PHASE_FRAC_MASK ) ; acc0 = ( EAS_I32 ) ( pSamples - loopEnd ) ; if ( acc0 >= 0 ) pSamples = ( const EAS_SAMPLE * ) pWTVoice -> loopStart + acc0 ; # if defined ( _8_BIT_SAMPLES ) samp1 = pSamples [ 0 ] << 8 ; samp2 = pSamples [ 1 ] << 8 ; # else samp1 = pSamples [ 0 ] ; samp2 = pSamples [ 1 ] ; # endif } } pWTVoice -> phaseAccum = ( EAS_U32 ) pSamples ; pWTVoice -> phaseFrac = ( EAS_U32 ) phaseFrac ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> numSamples ; if ( numSamples <= 0 ) { ALOGE ( \"b/26366256\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0216\n\n```\nCWE-20 static int netbk_count_requests ( struct xenvif * vif , struct xen_netif_tx_request * first , struct xen_netif_tx_request * txp , int work_to_do ) { RING_IDX cons = vif -> tx . req_cons ; int frags = 0 ; if ( ! ( first -> flags & XEN_NETTXF_more_data ) ) return 0 ; do { if ( frags >= work_to_do ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"Need<S2SV_blank>more<S2SV_blank>frags\\\\n\" ) ; <S2SV_EndBug> return - frags ; } if ( unlikely ( frags >= MAX_SKB_FRAGS ) ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"Too<S2SV_blank>many<S2SV_blank>frags\\\\n\" ) ; <S2SV_EndBug> return - frags ; } memcpy ( txp , RING_GET_REQUEST ( & vif -> tx , cons + frags ) , sizeof ( * txp ) ) ; if ( txp -> size > first -> size ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"Frags<S2SV_blank>galore\\\\n\" ) ; <S2SV_EndBug> return - frags ; } first -> size -= txp -> size ; frags ++ ; if ( unlikely ( ( txp -> offset + txp -> size ) > PAGE_SIZE ) ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"txp->offset:<S2SV_blank>%x,<S2SV_blank>size:<S2SV_blank>%u\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> txp -> offset , txp -> size ) ; <S2SV_EndBug> return - frags ; } } while ( ( txp ++ ) -> flags & XEN_NETTXF_more_data ) ; return frags ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> work_to_do ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> dev , \"Need<S2SV_blank>more<S2SV_blank>frags\\\\n\" ) ; netbk_fatal_tx_err ( vif <S2SV_ModStart> ) ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> dev , \"Too<S2SV_blank>many<S2SV_blank>frags\\\\n\" ) ; netbk_fatal_tx_err ( vif <S2SV_ModStart> size ) { netdev_err ( vif -> dev , \"Frag<S2SV_blank>is<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>frame.\\\\n\" ) ; netbk_fatal_tx_err ( vif <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> txp -> size ) ; netbk_fatal_tx_err ( vif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_free_request ( SCSIRequest * req ) { SCSIDiskReq * r = DO_UPCAST ( SCSIDiskReq , req , req ) ; <S2SV_StartBug> qemu_vfree ( r -> iov . iov_base ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> req ) ; if ( r -> iov . iov_base ) { <S2SV_ModStart> ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2017\n\n```\nCWE-399 int dev_forward_skb ( struct net_device * dev , struct sk_buff * skb ) { skb_orphan ( skb ) ; <S2SV_StartBug> if ( ! ( dev -> flags & IFF_UP ) ) <S2SV_EndBug> return NET_RX_DROP ; <S2SV_StartBug> if ( skb -> len > ( dev -> mtu + dev -> hard_header_len ) ) <S2SV_EndBug> <S2SV_StartBug> return NET_RX_DROP ; <S2SV_EndBug> skb_set_dev ( skb , dev ) ; skb -> tstamp . tv64 = 0 ; skb -> pkt_type = PACKET_HOST ; skb -> protocol = eth_type_trans ( skb , dev ) ; return netif_rx ( skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & IFF_UP ) || <S2SV_ModEnd> ( skb -> <S2SV_ModStart> hard_header_len ) ) ) { kfree_skb ( skb ) ; <S2SV_ModStart> return NET_RX_DROP ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16533\n\n```\nCWE-125 static int usbhid_parse ( struct hid_device * hid ) { struct usb_interface * intf = to_usb_interface ( hid -> dev . parent ) ; struct usb_host_interface * interface = intf -> cur_altsetting ; struct usb_device * dev = interface_to_usbdev ( intf ) ; struct hid_descriptor * hdesc ; u32 quirks = 0 ; unsigned int rsize = 0 ; char * rdesc ; <S2SV_StartBug> int ret , n ; <S2SV_EndBug> quirks = usbhid_lookup_quirk ( le16_to_cpu ( dev -> descriptor . idVendor ) , le16_to_cpu ( dev -> descriptor . idProduct ) ) ; if ( quirks & HID_QUIRK_IGNORE ) return - ENODEV ; if ( interface -> desc . bInterfaceSubClass == USB_INTERFACE_SUBCLASS_BOOT ) { if ( interface -> desc . bInterfaceProtocol == USB_INTERFACE_PROTOCOL_KEYBOARD || interface -> desc . bInterfaceProtocol == USB_INTERFACE_PROTOCOL_MOUSE ) quirks |= HID_QUIRK_NOGET ; } if ( usb_get_extra_descriptor ( interface , HID_DT_HID , & hdesc ) && ( ! interface -> desc . bNumEndpoints || usb_get_extra_descriptor ( & interface -> endpoint [ 0 ] , HID_DT_HID , & hdesc ) ) ) { dbg_hid ( \"class<S2SV_blank>descriptor<S2SV_blank>not<S2SV_blank>present\\\\n\" ) ; return - ENODEV ; } <S2SV_StartBug> hid -> version = le16_to_cpu ( hdesc -> bcdHID ) ; <S2SV_EndBug> <S2SV_StartBug> hid -> country = hdesc -> bCountryCode ; <S2SV_EndBug> <S2SV_StartBug> for ( n = 0 ; n < hdesc -> bNumDescriptors ; n ++ ) <S2SV_EndBug> if ( hdesc -> desc [ n ] . bDescriptorType == HID_DT_REPORT ) rsize = le16_to_cpu ( hdesc -> desc [ n ] . wDescriptorLength ) ; if ( ! rsize || rsize > HID_MAX_DESCRIPTOR_SIZE ) { dbg_hid ( \"weird<S2SV_blank>size<S2SV_blank>of<S2SV_blank>report<S2SV_blank>descriptor<S2SV_blank>(%u)\\\\n\" , rsize ) ; return - EINVAL ; } rdesc = kmalloc ( rsize , GFP_KERNEL ) ; if ( ! rdesc ) return - ENOMEM ; hid_set_idle ( dev , interface -> desc . bInterfaceNumber , 0 , 0 ) ; ret = hid_get_class_descriptor ( dev , interface -> desc . bInterfaceNumber , HID_DT_REPORT , rdesc , rsize ) ; if ( ret < 0 ) { dbg_hid ( \"reading<S2SV_blank>report<S2SV_blank>descriptor<S2SV_blank>failed\\\\n\" ) ; kfree ( rdesc ) ; goto err ; } ret = hid_parse_report ( hid , rdesc , rsize ) ; kfree ( rdesc ) ; if ( ret ) { dbg_hid ( \"parsing<S2SV_blank>report<S2SV_blank>descriptor<S2SV_blank>failed\\\\n\" ) ; goto err ; } hid -> quirks |= quirks ; return 0 ; err : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret , n ; int num_descriptors ; size_t offset = offsetof ( struct hid_descriptor , desc ) <S2SV_ModStart> ENODEV ; } if ( hdesc -> bLength < sizeof ( struct hid_descriptor ) ) { dbg_hid ( \"hid<S2SV_blank>descriptor<S2SV_blank>is<S2SV_blank>too<S2SV_blank>short\\\\n\" ) ; return - EINVAL ; } <S2SV_ModStart> hdesc -> bCountryCode ; num_descriptors = min_t ( int , hdesc -> bNumDescriptors , ( hdesc -> bLength - offset ) / sizeof ( struct hid_class_descriptor ) ) <S2SV_ModStart> ; n < num_descriptors <S2SV_ModEnd> ; n ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_iht16x16_256_add_c ( const int16_t * input , uint8_t * dest , int stride , <S2SV_EndBug> int tx_type ) { int i , j ; <S2SV_StartBug> int16_t out [ 16 * 16 ] ; <S2SV_EndBug> <S2SV_StartBug> int16_t * outptr = out ; <S2SV_EndBug> <S2SV_StartBug> int16_t temp_in [ 16 ] , temp_out [ 16 ] ; <S2SV_EndBug> const transform_2d ht = IHT_16 [ tx_type ] ; for ( i = 0 ; i < 16 ; ++ i ) { ht . rows ( input , outptr ) ; input += 16 ; outptr += 16 ; } for ( i = 0 ; i < 16 ; ++ i ) { for ( j = 0 ; j < 16 ; ++ j ) temp_in [ j ] = out [ j * 16 + i ] ; ht . cols ( temp_in , temp_out ) ; <S2SV_StartBug> for ( j = 0 ; j < 16 ; ++ j ) <S2SV_EndBug> <S2SV_StartBug> dest [ j * stride + i ] = clip_pixel ( ROUND_POWER_OF_TWO ( temp_out [ j ] , 6 ) <S2SV_EndBug> <S2SV_StartBug> + dest [ j * stride + i ] ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_iht16x16_256_add_c ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> , j ; tran_low_t <S2SV_ModEnd> out [ 16 <S2SV_ModStart> 16 ] ; tran_low_t <S2SV_ModEnd> * outptr = <S2SV_ModStart> = out ; tran_low_t <S2SV_ModEnd> temp_in [ 16 <S2SV_ModStart> ++ j ) { <S2SV_ModStart> i ] = clip_pixel_add ( <S2SV_ModEnd> dest [ j <S2SV_ModStart> + i ] , ROUND_POWER_OF_TWO ( temp_out [ j ] , 6 ) ) ; } <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3232\n\n```\nCWE-200 static int nr_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct sockaddr_ax25 * sax = ( struct sockaddr_ax25 * ) msg -> msg_name ; size_t copied ; struct sk_buff * skb ; int er ; lock_sock ( sk ) ; if ( sk -> sk_state != TCP_ESTABLISHED ) { release_sock ( sk ) ; return - ENOTCONN ; } if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) { release_sock ( sk ) ; return er ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } er = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( er < 0 ) { skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return er ; } if ( sax != NULL ) { <S2SV_StartBug> memset ( sax , 0 , sizeof ( sax ) ) ; <S2SV_EndBug> sax -> sax25_family = AF_NETROM ; skb_copy_from_linear_data_offset ( skb , 7 , sax -> sax25_call . ax25_call , AX25_ADDR_LEN ) ; } msg -> msg_namelen = sizeof ( * sax ) ; skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , sizeof ( *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0814\n\n```\nCWE-200 long vorbis_book_decodev_set ( codebook * book , ogg_int32_t * a , oggpack_buffer * b , int n , int point ) { if ( book -> used_entries > 0 ) { ogg_int32_t * v = book -> dec_buf ; int i , j ; if ( ! v ) return - 1 ; for ( i = 0 ; i < n ; ) { if ( decode_map ( book , b , v , point ) ) return - 1 ; <S2SV_StartBug> for ( j = 0 ; j < book -> dim ; j ++ ) <S2SV_EndBug> a [ i ++ ] = v [ j ] ; } } else { int i , j ; for ( i = 0 ; i < n ; ) { <S2SV_StartBug> for ( j = 0 ; j < book -> dim ; j ++ ) <S2SV_EndBug> a [ i ++ ] = 0 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> book -> dim && i < n <S2SV_ModStart> book -> dim && i < n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5773\n\n```\nCWE-416 static PHP_MINIT_FUNCTION ( zip ) { # ifdef PHP_ZIP_USE_OO zend_class_entry ce ; memcpy ( & zip_object_handlers , zend_get_std_object_handlers ( ) , sizeof ( zend_object_handlers ) ) ; zip_object_handlers . clone_obj = NULL ; zip_object_handlers . get_property_ptr_ptr = php_zip_get_property_ptr_ptr ; <S2SV_StartBug> zip_object_handlers . get_properties = php_zip_get_properties ; <S2SV_EndBug> zip_object_handlers . read_property = php_zip_read_property ; zip_object_handlers . has_property = php_zip_has_property ; INIT_CLASS_ENTRY ( ce , \"ZipArchive\" , zip_class_functions ) ; ce . create_object = php_zip_object_new ; zip_class_entry = zend_register_internal_class ( & ce TSRMLS_CC ) ; zend_hash_init ( & zip_prop_handlers , 0 , NULL , NULL , 1 ) ; php_zip_register_prop_handler ( & zip_prop_handlers , \"status\" , php_zip_status , NULL , NULL , IS_LONG TSRMLS_CC ) ; php_zip_register_prop_handler ( & zip_prop_handlers , \"statusSys\" , php_zip_status_sys , NULL , NULL , IS_LONG TSRMLS_CC ) ; php_zip_register_prop_handler ( & zip_prop_handlers , \"numFiles\" , php_zip_get_num_files , NULL , NULL , IS_LONG TSRMLS_CC ) ; php_zip_register_prop_handler ( & zip_prop_handlers , \"filename\" , NULL , NULL , php_zipobj_get_filename , IS_STRING TSRMLS_CC ) ; php_zip_register_prop_handler ( & zip_prop_handlers , \"comment\" , NULL , php_zipobj_get_zip_comment , NULL , IS_STRING TSRMLS_CC ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CREATE\" , ZIP_CREATE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"EXCL\" , ZIP_EXCL ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CHECKCONS\" , ZIP_CHECKCONS ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"OVERWRITE\" , ZIP_OVERWRITE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"FL_NOCASE\" , ZIP_FL_NOCASE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"FL_NODIR\" , ZIP_FL_NODIR ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"FL_COMPRESSED\" , ZIP_FL_COMPRESSED ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"FL_UNCHANGED\" , ZIP_FL_UNCHANGED ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_DEFAULT\" , ZIP_CM_DEFAULT ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_STORE\" , ZIP_CM_STORE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_SHRINK\" , ZIP_CM_SHRINK ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_REDUCE_1\" , ZIP_CM_REDUCE_1 ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_REDUCE_2\" , ZIP_CM_REDUCE_2 ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_REDUCE_3\" , ZIP_CM_REDUCE_3 ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_REDUCE_4\" , ZIP_CM_REDUCE_4 ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_IMPLODE\" , ZIP_CM_IMPLODE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_DEFLATE\" , ZIP_CM_DEFLATE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_DEFLATE64\" , ZIP_CM_DEFLATE64 ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_PKWARE_IMPLODE\" , ZIP_CM_PKWARE_IMPLODE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_BZIP2\" , ZIP_CM_BZIP2 ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_LZMA\" , ZIP_CM_LZMA ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_TERSE\" , ZIP_CM_TERSE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_LZ77\" , ZIP_CM_LZ77 ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_WAVPACK\" , ZIP_CM_WAVPACK ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"CM_PPMD\" , ZIP_CM_PPMD ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_OK\" , ZIP_ER_OK ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_MULTIDISK\" , ZIP_ER_MULTIDISK ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_RENAME\" , ZIP_ER_RENAME ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_CLOSE\" , ZIP_ER_CLOSE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_SEEK\" , ZIP_ER_SEEK ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_READ\" , ZIP_ER_READ ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_WRITE\" , ZIP_ER_WRITE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_CRC\" , ZIP_ER_CRC ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_ZIPCLOSED\" , ZIP_ER_ZIPCLOSED ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_NOENT\" , ZIP_ER_NOENT ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_EXISTS\" , ZIP_ER_EXISTS ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_OPEN\" , ZIP_ER_OPEN ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_TMPOPEN\" , ZIP_ER_TMPOPEN ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_ZLIB\" , ZIP_ER_ZLIB ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_MEMORY\" , ZIP_ER_MEMORY ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_CHANGED\" , ZIP_ER_CHANGED ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_COMPNOTSUPP\" , ZIP_ER_COMPNOTSUPP ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_EOF\" , ZIP_ER_EOF ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_INVAL\" , ZIP_ER_INVAL ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_NOZIP\" , ZIP_ER_NOZIP ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_INTERNAL\" , ZIP_ER_INTERNAL ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_INCONS\" , ZIP_ER_INCONS ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_REMOVE\" , ZIP_ER_REMOVE ) ; REGISTER_ZIP_CLASS_CONST_LONG ( \"ER_DELETED\" , ZIP_ER_DELETED ) ; php_register_url_stream_wrapper ( \"zip\" , & php_stream_zip_wrapper TSRMLS_CC ) ; # endif le_zip_dir = zend_register_list_destructors_ex ( php_zip_free_dir , NULL , le_zip_dir_name , module_number ) ; le_zip_entry = zend_register_list_destructors_ex ( php_zip_free_entry , NULL , le_zip_entry_name , module_number ) ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; zip_object_handlers . get_gc = php_zip_get_gc ; zip_object_handlers .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13043\n\n```\nCWE-125 static int decode_multicast_vpn ( netdissect_options * ndo , const u_char * pptr , char * buf , u_int buflen ) { uint8_t route_type , route_length , addr_length , sg_length ; u_int offset ; ND_TCHECK2 ( pptr [ 0 ] , 2 ) ; route_type = * pptr ++ ; route_length = * pptr ++ ; snprintf ( buf , buflen , \"Route-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_multicast_vpn_route_type_values , \"Unknown\" , route_type ) , route_type , route_length ) ; switch ( route_type ) { case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_I_PMSI : ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s,<S2SV_blank>Originator<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) , bgp_vpn_ip_print ( ndo , pptr + BGP_VPN_RD_LEN , ( route_length - BGP_VPN_RD_LEN ) << 3 ) ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_INTER_AS_I_PMSI : ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN + 4 ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s,<S2SV_blank>Source-AS<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( pptr + BGP_VPN_RD_LEN ) ) ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_S_PMSI : ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) ) ; pptr += BGP_VPN_RD_LEN ; sg_length = bgp_vpn_sg_print ( ndo , pptr , buf , buflen ) ; addr_length = route_length - sg_length ; ND_TCHECK2 ( pptr [ 0 ] , addr_length ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>Originator<S2SV_blank>%s\" , bgp_vpn_ip_print ( ndo , pptr , addr_length << 3 ) ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_ACTIVE : ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN ) ; offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) ) ; pptr += BGP_VPN_RD_LEN ; bgp_vpn_sg_print ( ndo , pptr , buf , buflen ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_SHARED_TREE_JOIN : case BGP_MULTICAST_VPN_ROUTE_TYPE_SOURCE_TREE_JOIN : <S2SV_StartBug> ND_TCHECK2 ( pptr [ 0 ] , BGP_VPN_RD_LEN ) ; <S2SV_EndBug> offset = strlen ( buf ) ; snprintf ( buf + offset , buflen - offset , \",<S2SV_blank>RD:<S2SV_blank>%s,<S2SV_blank>Source-AS<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , pptr ) , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( pptr + BGP_VPN_RD_LEN ) ) ) ; <S2SV_StartBug> pptr += BGP_VPN_RD_LEN ; <S2SV_EndBug> bgp_vpn_sg_print ( ndo , pptr , buf , buflen ) ; break ; case BGP_MULTICAST_VPN_ROUTE_TYPE_INTRA_AS_SEG_LEAF : default : break ; } return route_length + 2 ; trunc : return - 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] , BGP_VPN_RD_LEN + 4 <S2SV_ModStart> pptr += BGP_VPN_RD_LEN + 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 TSQuery parse_tsquery ( char * buf , PushFunction pushval , Datum opaque , bool isplain ) { struct TSQueryParserStateData state ; int i ; TSQuery query ; int commonlen ; QueryItem * ptr ; ListCell * cell ; state . buffer = buf ; state . buf = buf ; state . state = ( isplain ) ? WAITSINGLEOPERAND : WAITFIRSTOPERAND ; state . count = 0 ; state . polstr = NIL ; state . valstate = init_tsvector_parser ( state . buffer , true , true ) ; state . sumlen = 0 ; state . lenop = 64 ; state . curop = state . op = ( char * ) palloc ( state . lenop ) ; * ( state . curop ) = '\\\\0' ; makepol ( & state , pushval , opaque ) ; close_tsvector_parser ( state . valstate ) ; if ( list_length ( state . polstr ) == 0 ) { ereport ( NOTICE , ( errmsg ( \"text-search<S2SV_blank>query<S2SV_blank>doesn\\'t<S2SV_blank>contain<S2SV_blank>lexemes:<S2SV_blank>\\\\\"%s\\\\\"\" , state . buffer ) ) ) ; query = ( TSQuery ) palloc ( HDRSIZETQ ) ; SET_VARSIZE ( query , HDRSIZETQ ) ; query -> size = 0 ; return query ; <S2SV_StartBug> } <S2SV_EndBug> commonlen = COMPUTESIZE ( list_length ( state . polstr ) , state . sumlen ) ; query = ( TSQuery ) palloc0 ( commonlen ) ; SET_VARSIZE ( query , commonlen ) ; query -> size = list_length ( state . polstr ) ; ptr = GETQUERY ( query ) ; i = 0 ; foreach ( cell , state . polstr ) { QueryItem * item = ( QueryItem * ) lfirst ( cell ) ; switch ( item -> type ) { case QI_VAL : memcpy ( & ptr [ i ] , item , sizeof ( QueryOperand ) ) ; break ; case QI_VALSTOP : ptr [ i ] . type = QI_VALSTOP ; break ; case QI_OPR : memcpy ( & ptr [ i ] , item , sizeof ( QueryOperator ) ) ; break ; default : elog ( ERROR , \"unrecognized<S2SV_blank>QueryItem<S2SV_blank>type:<S2SV_blank>%d\" , item -> type ) ; } i ++ ; } memcpy ( ( void * ) GETOPERAND ( query ) , ( void * ) state . op , state . sumlen ) ; pfree ( state . op ) ; findoprnd ( ptr , query -> size ) ; return query ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> query ; } if ( TSQUERY_TOO_BIG ( list_length ( state . polstr ) , state . sumlen ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"tsquery<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5353\n\n```\nCWE-476 static krb5_error_code krb5_ldap_get_password_policy_from_dn ( krb5_context context , char * pol_name , char * pol_dn , osa_policy_ent_t * policy ) { krb5_error_code st = 0 , tempst = 0 ; LDAP * ld = NULL ; LDAPMessage * result = NULL , * ent = NULL ; kdb5_dal_handle * dal_handle = NULL ; krb5_ldap_context * ldap_context = NULL ; krb5_ldap_server_handle * ldap_server_handle = NULL ; krb5_clear_error_message ( context ) ; if ( pol_dn == NULL ) return EINVAL ; * policy = NULL ; SETUP_CONTEXT ( ) ; GET_HANDLE ( ) ; * ( policy ) = ( osa_policy_ent_t ) malloc ( sizeof ( osa_policy_ent_rec ) ) ; if ( * policy == NULL ) { st = ENOMEM ; goto cleanup ; } memset ( * policy , 0 , sizeof ( osa_policy_ent_rec ) ) ; LDAP_SEARCH ( pol_dn , LDAP_SCOPE_BASE , \"(objectclass=krbPwdPolicy)\" , password_policy_attributes ) ; ent = ldap_first_entry ( ld , result ) ; <S2SV_StartBug> if ( ent != NULL ) { <S2SV_EndBug> if ( ( st = populate_policy ( context , ld , ent , pol_name , * policy ) ) != 0 ) goto cleanup ; } <S2SV_StartBug> cleanup : <S2SV_EndBug> ldap_msgfree ( result ) ; if ( st != 0 ) { if ( * policy != NULL ) { krb5_ldap_free_password_policy ( context , * policy ) ; * policy = NULL ; } } krb5_ldap_put_handle_to_pool ( ldap_context , ldap_server_handle ) ; return st ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ent == NULL ) { st = KRB5_KDB_NOENTRY ; <S2SV_ModEnd> goto cleanup ; <S2SV_ModStart> cleanup ; } st = populate_policy ( context , ld , ent , pol_name , * policy ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 <S2SV_StartBug> static void sas_probe_devices ( struct work_struct * work ) <S2SV_EndBug> { <S2SV_StartBug> struct domain_device * dev , * n ; <S2SV_EndBug> struct sas_discovery_event * ev = to_sas_discovery_event ( work ) ; struct asd_sas_port * port = ev -> port ; clear_bit ( DISCE_PROBE , & port -> disc . pending ) ; list_for_each_entry ( dev , & port -> disco_list , disco_list_node ) { spin_lock_irq ( & port -> dev_list_lock ) ; list_add_tail ( & dev -> dev_list_node , & port -> dev_list ) ; spin_unlock_irq ( & port -> dev_list_lock ) ; } sas_probe_sata ( port ) ; list_for_each_entry_safe ( dev , n , & port -> disco_list , disco_list_node ) { int err ; err = sas_rphy_add ( dev -> rphy ) ; if ( err ) sas_fail_probe ( dev , __func__ , err ) ; else list_del_init ( & dev -> disco_list_node ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sas_probe_devices ( struct asd_sas_port * port <S2SV_ModEnd> ) { struct <S2SV_ModStart> , * n <S2SV_ModEnd> ; list_for_each_entry (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 static int jpc_pi_nextrpcl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; int compno ; jpc_picomp_t * picomp ; int xstep ; int ystep ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; uint_fast32_t trx0 ; uint_fast32_t try0 ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> xstep = 0 ; pi -> ystep = 0 ; for ( compno = 0 , picomp = pi -> picomps ; compno < pi -> numcomps ; ++ compno , ++ picomp ) { for ( rlvlno = 0 , pirlvl = picomp -> pirlvls ; rlvlno < picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { <S2SV_StartBug> if ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls > <S2SV_EndBug> JAS_UINTFAST32_NUMBITS - 2 || <S2SV_StartBug> pirlvl -> prcheightexpn + pi -> picomp -> numrlvls > <S2SV_EndBug> JAS_UINTFAST32_NUMBITS - 2 ) { return - 1 ; } xstep = picomp -> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcwidthexpn + picomp -> numrlvls - rlvlno - 1 ) ) ; ystep = picomp -> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcheightexpn + picomp -> numrlvls - rlvlno - 1 ) ) ; pi -> xstep = ( ! pi -> xstep ) ? xstep : JAS_MIN ( pi -> xstep , xstep ) ; pi -> ystep = ( ! pi -> ystep ) ? ystep : JAS_MIN ( pi -> ystep , ystep ) ; } } pi -> prgvolfirst = 0 ; } for ( pi -> rlvlno = pchg -> rlvlnostart ; pi -> rlvlno < pchg -> rlvlnoend && pi -> rlvlno < pi -> maxrlvls ; ++ pi -> rlvlno ) { for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < JAS_CAST ( int , pchg -> compnoend ) && pi -> compno < pi -> numcomps ; ++ pi -> compno , ++ pi -> picomp ) { if ( pi -> rlvlno >= pi -> picomp -> numrlvls ) { continue ; } pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( JAS_CAST ( uint_fast32_t , 1 ) << rpx ) ) ) || ! ( pi -> x % ( JAS_CAST ( uint_fast32_t , 1 ) << rpx ) ) ) && ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( JAS_CAST ( uint_fast32_t , 1 ) << rpy ) ) ) || ! ( pi -> y % ( JAS_CAST ( uint_fast32_t , 1 ) << rpy ) ) ) ) { prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> prcwidthexpn + <S2SV_ModEnd> picomp -> numrlvls <S2SV_ModStart> -> prcheightexpn + <S2SV_ModEnd> picomp -> numrlvls\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-28041\n\n```\nCWE-415 static int parse_key_constraints ( struct sshbuf * m , struct sshkey * k , time_t * deathp , u_int * secondsp , int * confirmp , char * * sk_providerp ) { u_char ctype ; int r ; u_int seconds , maxsign = 0 ; <S2SV_StartBug> char * ext_name = NULL ; <S2SV_EndBug> struct sshbuf * b = NULL ; while ( sshbuf_len ( m ) ) { if ( ( r = sshbuf_get_u8 ( m , & ctype ) ) != 0 ) { error_fr ( r , \"parse<S2SV_blank>constraint<S2SV_blank>type\" ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } switch ( ctype ) { case SSH_AGENT_CONSTRAIN_LIFETIME : if ( * deathp != 0 ) { error_f ( \"lifetime<S2SV_blank>already<S2SV_blank>set\" ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } if ( ( r = sshbuf_get_u32 ( m , & seconds ) ) != 0 ) { error_fr ( r , \"parse<S2SV_blank>lifetime<S2SV_blank>constraint\" ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } * deathp = monotime ( ) + seconds ; * secondsp = seconds ; break ; case SSH_AGENT_CONSTRAIN_CONFIRM : if ( * confirmp != 0 ) { error_f ( \"confirm<S2SV_blank>already<S2SV_blank>set\" ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } * confirmp = 1 ; break ; case SSH_AGENT_CONSTRAIN_MAXSIGN : if ( k == NULL ) { error_f ( \"maxsign<S2SV_blank>not<S2SV_blank>valid<S2SV_blank>here\" ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } if ( maxsign != 0 ) { error_f ( \"maxsign<S2SV_blank>already<S2SV_blank>set\" ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } if ( ( r = sshbuf_get_u32 ( m , & maxsign ) ) != 0 ) { error_fr ( r , \"parse<S2SV_blank>maxsign<S2SV_blank>constraint\" ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } if ( ( r = sshkey_enable_maxsign ( k , maxsign ) ) != 0 ) { error_fr ( r , \"enable<S2SV_blank>maxsign\" ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } break ; case SSH_AGENT_CONSTRAIN_EXTENSION : <S2SV_StartBug> if ( ( r = sshbuf_get_cstring ( m , & ext_name , NULL ) ) != 0 ) { <S2SV_EndBug> error_fr ( r , \"parse<S2SV_blank>constraint<S2SV_blank>extension\" ) ; goto err ; } debug_f ( \"constraint<S2SV_blank>ext<S2SV_blank>%s\" , ext_name ) ; if ( strcmp ( ext_name , \"sk-provider@openssh.com\" ) == 0 ) { if ( sk_providerp == NULL ) { error_f ( \"%s<S2SV_blank>not<S2SV_blank>valid<S2SV_blank>here\" , ext_name ) ; goto err ; } if ( * sk_providerp != NULL ) { error_f ( \"%s<S2SV_blank>already<S2SV_blank>set\" , ext_name ) ; goto err ; } if ( ( r = sshbuf_get_cstring ( m , sk_providerp , NULL ) ) != 0 ) { error_fr ( r , \"parse<S2SV_blank>%s\" , ext_name ) ; goto err ; } } else { error_f ( \"unsupported<S2SV_blank>constraint<S2SV_blank>\\\\\"%s\\\\\"\" , ext_name ) ; goto err ; } free ( ext_name ) ; break ; default : error_f ( \"Unknown<S2SV_blank>constraint<S2SV_blank>%d\" , ctype ) ; <S2SV_StartBug> err : <S2SV_EndBug> free ( ext_name ) ; sshbuf_free ( b ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> while ( sshbuf_len <S2SV_ModStart> ) ; goto out <S2SV_ModEnd> ; } switch <S2SV_ModStart> \"lifetime<S2SV_blank>already<S2SV_blank>set\" ) ; r = SSH_ERR_INVALID_FORMAT ; goto out <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ; goto out <S2SV_ModEnd> ; } * <S2SV_ModStart> \"confirm<S2SV_blank>already<S2SV_blank>set\" ) ; r = SSH_ERR_INVALID_FORMAT ; goto out <S2SV_ModEnd> ; } * <S2SV_ModStart> \"maxsign<S2SV_blank>not<S2SV_blank>valid<S2SV_blank>here\" ) ; r = SSH_ERR_INVALID_FORMAT ; goto out <S2SV_ModEnd> ; } if <S2SV_ModStart> \"maxsign<S2SV_blank>already<S2SV_blank>set\" ) ; r = SSH_ERR_INVALID_FORMAT ; goto out <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ; goto out <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ; goto out <S2SV_ModEnd> ; } break <S2SV_ModStart> ( r = parse_key_constraint_extension ( m , sk_providerp ) ) != 0 ) goto out ; break ; default : error_f ( <S2SV_ModEnd> \"Unknown<S2SV_blank>constraint<S2SV_blank>%d\" , ctype <S2SV_ModStart> ctype ) ; r = SSH_ERR_FEATURE_UNSUPPORTED ; goto out ; } } r = 0 ; out : return r <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4501\n\n```\nCWE-119 bool extract_sockaddr ( struct pool * pool , char * url ) { char * url_begin , * url_end , * ipv6_begin , * ipv6_end , * port_start = NULL ; char url_address [ 256 ] , port [ 6 ] ; int url_len , port_len = 0 ; url_begin = strstr ( url , \"//\" ) ; if ( ! url_begin ) url_begin = url ; else url_begin += 2 ; ipv6_begin = strstr ( url_begin , \"[\" ) ; ipv6_end = strstr ( url_begin , \"]\" ) ; if ( ipv6_begin && ipv6_end && ipv6_end > ipv6_begin ) url_end = strstr ( ipv6_end , \":\" ) ; else url_end = strstr ( url_begin , \":\" ) ; if ( url_end ) { url_len = url_end - url_begin ; port_len = strlen ( url_begin ) - url_len - 1 ; if ( port_len < 1 ) return false ; port_start = url_end + 1 ; } else url_len = strlen ( url_begin ) ; if ( url_len < 1 ) return false ; <S2SV_StartBug> sprintf ( url_address , \"%.*s\" , url_len , url_begin ) ; <S2SV_EndBug> if ( port_len ) snprintf ( port , 6 , \"%.*s\" , port_len , port_start ) ; else strcpy ( port , \"80\" ) ; free ( pool -> stratum_port ) ; pool -> stratum_port = strdup ( port ) ; free ( pool -> sockaddr_url ) ; pool -> sockaddr_url = strdup ( url_address ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return false ; if ( url_len >= sizeof ( url_address ) ) { applog ( LOG_WARNING , \"%s:<S2SV_blank>Truncating<S2SV_blank>overflowed<S2SV_blank>address<S2SV_blank>\\'%.*s\\'\" , __func__ , url_len , url_begin ) ; url_len = sizeof ( url_address ) - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t vp8_peek_si_internal ( const uint8_t * data , unsigned int data_sz , vpx_codec_stream_info_t * si , <S2SV_StartBug> vp8_decrypt_cb * decrypt_cb , <S2SV_EndBug> void * decrypt_state ) { vpx_codec_err_t res = VPX_CODEC_OK ; if ( data + data_sz <= data ) { res = VPX_CODEC_INVALID_PARAM ; } else { uint8_t clear_buffer [ 10 ] ; const uint8_t * clear = data ; if ( decrypt_cb ) { <S2SV_StartBug> int n = data_sz > 10 ? 10 : data_sz ; <S2SV_EndBug> decrypt_cb ( decrypt_state , data , clear_buffer , n ) ; clear = clear_buffer ; } si -> is_kf = 0 ; if ( data_sz >= 10 && ! ( clear [ 0 ] & 0x01 ) ) { si -> is_kf = 1 ; if ( clear [ 3 ] != 0x9d || clear [ 4 ] != 0x01 || clear [ 5 ] != 0x2a ) <S2SV_StartBug> res = VPX_CODEC_UNSUP_BITSTREAM ; <S2SV_EndBug> si -> w = ( clear [ 6 ] | ( clear [ 7 ] << 8 ) ) & 0x3fff ; si -> h = ( clear [ 8 ] | ( clear [ 9 ] << 8 ) ) & 0x3fff ; if ( ! ( si -> h | si -> w ) ) res = VPX_CODEC_UNSUP_BITSTREAM ; } else { res = VPX_CODEC_UNSUP_BITSTREAM ; } } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * si , vpx_decrypt_cb <S2SV_ModEnd> decrypt_cb , void <S2SV_ModStart> int n = MIN ( sizeof ( clear_buffer ) , data_sz ) <S2SV_ModEnd> ; decrypt_cb ( <S2SV_ModStart> != 0x2a ) return <S2SV_ModEnd> VPX_CODEC_UNSUP_BITSTREAM ; si\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20839\n\n```\nCWE-120 int ConnectClientToUnixSock ( const char * sockFile ) { # ifdef WIN32 rfbClientErr ( \"Windows<S2SV_blank>doesn\\'t<S2SV_blank>support<S2SV_blank>UNIX<S2SV_blank>sockets\\\\n\" ) ; return - 1 ; # else int sock ; struct sockaddr_un addr ; <S2SV_StartBug> addr . sun_family = AF_UNIX ; <S2SV_EndBug> strcpy ( addr . sun_path , sockFile ) ; sock = socket ( AF_UNIX , SOCK_STREAM , 0 ) ; if ( sock < 0 ) { rfbClientErr ( \"ConnectToUnixSock:<S2SV_blank>socket<S2SV_blank>(%s)\\\\n\" , strerror ( errno ) ) ; return - 1 ; } if ( connect ( sock , ( struct sockaddr * ) & addr , sizeof ( addr . sun_family ) + strlen ( addr . sun_path ) ) < 0 ) { rfbClientErr ( \"ConnectToUnixSock:<S2SV_blank>connect\\\\n\" ) ; close ( sock ) ; return - 1 ; } return sock ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = AF_UNIX ; if ( strlen ( sockFile ) + 1 > sizeof ( addr . sun_path ) ) { rfbClientErr ( \"ConnectToUnixSock:<S2SV_blank>socket<S2SV_blank>file<S2SV_blank>name<S2SV_blank>too<S2SV_blank>long\\\\n\" ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-667(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-667 static int userfaultfd_release ( struct inode * inode , struct file * file ) { struct userfaultfd_ctx * ctx = file -> private_data ; struct mm_struct * mm = ctx -> mm ; struct vm_area_struct * vma , * prev ; struct userfaultfd_wake_range range = { . len = 0 , } ; unsigned long new_flags ; WRITE_ONCE ( ctx -> released , true ) ; if ( ! mmget_not_zero ( mm ) ) goto wakeup ; down_write ( & mm -> mmap_sem ) ; <S2SV_StartBug> prev = NULL ; <S2SV_EndBug> for ( vma = mm -> mmap ; vma ; vma = vma -> vm_next ) { cond_resched ( ) ; BUG_ON ( ! ! vma -> vm_userfaultfd_ctx . ctx ^ ! ! ( vma -> vm_flags & ( VM_UFFD_MISSING | VM_UFFD_WP ) ) ) ; if ( vma -> vm_userfaultfd_ctx . ctx != ctx ) { prev = vma ; continue ; } new_flags = vma -> vm_flags & ~ ( VM_UFFD_MISSING | VM_UFFD_WP ) ; prev = vma_merge ( mm , prev , vma -> vm_start , vma -> vm_end , new_flags , vma -> anon_vma , vma -> vm_file , vma -> vm_pgoff , vma_policy ( vma ) , NULL_VM_UFFD_CTX ) ; if ( prev ) vma = prev ; else prev = vma ; vma -> vm_flags = new_flags ; vma -> vm_userfaultfd_ctx = NULL_VM_UFFD_CTX ; } <S2SV_StartBug> up_write ( & mm -> mmap_sem ) ; <S2SV_EndBug> mmput ( mm ) ; wakeup : spin_lock ( & ctx -> fault_pending_wqh . lock ) ; __wake_up_locked_key ( & ctx -> fault_pending_wqh , TASK_NORMAL , & range ) ; __wake_up ( & ctx -> fault_wqh , TASK_NORMAL , 1 , & range ) ; spin_unlock ( & ctx -> fault_pending_wqh . lock ) ; wake_up_all ( & ctx -> event_wqh ) ; wake_up_poll ( & ctx -> fd_wqh , EPOLLHUP ) ; userfaultfd_ctx_put ( ctx ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mmap_sem ) ; if ( ! mmget_still_valid ( mm ) ) goto skip_mm ; <S2SV_ModStart> NULL_VM_UFFD_CTX ; } skip_mm :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0810\n\n```\nCWE-119 IMPEG2D_ERROR_CODES_T impeg2d_dec_p_b_slice ( dec_state_t * ps_dec ) { WORD16 * pi2_vld_out ; UWORD32 i ; yuv_buf_t * ps_cur_frm_buf = & ps_dec -> s_cur_frm_buf ; UWORD32 u4_frm_offset = 0 ; const dec_mb_params_t * ps_dec_mb_params ; IMPEG2D_ERROR_CODES_T e_error = ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; pi2_vld_out = ps_dec -> ai2_vld_buf ; memset ( ps_dec -> ai2_pred_mv , 0 , sizeof ( ps_dec -> ai2_pred_mv ) ) ; ps_dec -> u2_prev_intra_mb = 0 ; ps_dec -> u2_first_mb = 1 ; ps_dec -> u2_picture_width = ps_dec -> u2_frame_width ; if ( ps_dec -> u2_picture_structure != FRAME_PICTURE ) { ps_dec -> u2_picture_width <<= 1 ; if ( ps_dec -> u2_picture_structure == BOTTOM_FIELD ) { u4_frm_offset = ps_dec -> u2_frame_width ; } } do { UWORD32 u4_x_offset , u4_y_offset ; WORD32 ret ; UWORD32 u4_x_dst_offset = 0 ; UWORD32 u4_y_dst_offset = 0 ; UWORD8 * pu1_out_p ; UWORD8 * pu1_pred ; WORD32 u4_pred_strd ; IMPEG2D_TRACE_MB_START ( ps_dec -> u2_mb_x , ps_dec -> u2_mb_y ) ; if ( ps_dec -> e_pic_type == B_PIC ) ret = impeg2d_dec_pnb_mb_params ( ps_dec ) ; else ret = impeg2d_dec_p_mb_params ( ps_dec ) ; if ( ret ) <S2SV_StartBug> return IMPEG2D_MB_TEX_DECODE_ERR ; <S2SV_EndBug> IMPEG2D_TRACE_MB_START ( ps_dec -> u2_mb_x , ps_dec -> u2_mb_y ) ; u4_x_dst_offset = u4_frm_offset + ( ps_dec -> u2_mb_x << 4 ) ; u4_y_dst_offset = ( ps_dec -> u2_mb_y << 4 ) * ps_dec -> u2_picture_width ; pu1_out_p = ps_cur_frm_buf -> pu1_y + u4_x_dst_offset + u4_y_dst_offset ; if ( ps_dec -> u2_prev_intra_mb == 0 ) { UWORD32 offset_x , offset_y , stride ; UWORD16 index = ( ps_dec -> u2_motion_type ) ; if ( ps_dec -> e_mb_pred == BIDIRECT ) { ps_dec_mb_params = & ps_dec -> ps_func_bi_direct [ index ] ; } else { ps_dec_mb_params = & ps_dec -> ps_func_forw_or_back [ index ] ; } stride = ps_dec -> u2_picture_width ; offset_x = u4_frm_offset + ( ps_dec -> u2_mb_x << 4 ) ; offset_y = ( ps_dec -> u2_mb_y << 4 ) ; ps_dec -> s_dest_buf . pu1_y = ps_cur_frm_buf -> pu1_y + offset_y * stride + offset_x ; stride = stride >> 1 ; ps_dec -> s_dest_buf . pu1_u = ps_cur_frm_buf -> pu1_u + ( offset_y >> 1 ) * stride + ( offset_x >> 1 ) ; ps_dec -> s_dest_buf . pu1_v = ps_cur_frm_buf -> pu1_v + ( offset_y >> 1 ) * stride + ( offset_x >> 1 ) ; PROFILE_DISABLE_MC_IF0 ps_dec_mb_params -> pf_mc ( ps_dec ) ; } for ( i = 0 ; i < NUM_LUMA_BLKS ; ++ i ) { if ( ( ps_dec -> u2_cbp & ( 1 << ( BLOCKS_IN_MB - 1 - i ) ) ) != 0 ) { e_error = ps_dec -> pf_vld_inv_quant ( ps_dec , pi2_vld_out , ps_dec -> pu1_inv_scan_matrix , ps_dec -> u2_prev_intra_mb , Y_LUMA , 0 ) ; if ( ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE != e_error ) { return e_error ; } u4_x_offset = gai2_impeg2_blk_x_off [ i ] ; if ( ps_dec -> u2_field_dct == 0 ) u4_y_offset = gai2_impeg2_blk_y_off_frm [ i ] ; else u4_y_offset = gai2_impeg2_blk_y_off_fld [ i ] ; IMPEG2D_IDCT_INP_STATISTICS ( pi2_vld_out , ps_dec -> u4_non_zero_cols , ps_dec -> u4_non_zero_rows ) ; PROFILE_DISABLE_IDCT_IF0 { WORD32 idx ; if ( 1 == ( ps_dec -> u4_non_zero_cols | ps_dec -> u4_non_zero_rows ) ) idx = 0 ; else idx = 1 ; if ( 0 == ps_dec -> u2_prev_intra_mb ) { pu1_pred = pu1_out_p + u4_y_offset * ps_dec -> u2_picture_width + u4_x_offset ; u4_pred_strd = ps_dec -> u2_picture_width << ps_dec -> u2_field_dct ; } else { pu1_pred = ( UWORD8 * ) gau1_impeg2_zerobuf ; u4_pred_strd = 8 ; } ps_dec -> pf_idct_recon [ idx * 2 + ps_dec -> i4_last_value_one ] ( pi2_vld_out , ps_dec -> ai2_idct_stg1 , pu1_pred , pu1_out_p + u4_y_offset * ps_dec -> u2_picture_width + u4_x_offset , 8 , u4_pred_strd , ps_dec -> u2_picture_width << ps_dec -> u2_field_dct , ~ ps_dec -> u4_non_zero_cols , ~ ps_dec -> u4_non_zero_rows ) ; } } } u4_x_dst_offset >>= 1 ; u4_y_dst_offset >>= 2 ; if ( ( ps_dec -> u2_cbp & 0x02 ) != 0 ) { pu1_out_p = ps_cur_frm_buf -> pu1_u + u4_x_dst_offset + u4_y_dst_offset ; e_error = ps_dec -> pf_vld_inv_quant ( ps_dec , pi2_vld_out , ps_dec -> pu1_inv_scan_matrix , ps_dec -> u2_prev_intra_mb , U_CHROMA , 0 ) ; if ( ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE != e_error ) { return e_error ; } IMPEG2D_IDCT_INP_STATISTICS ( pi2_vld_out , ps_dec -> u4_non_zero_cols , ps_dec -> u4_non_zero_rows ) ; PROFILE_DISABLE_IDCT_IF0 { WORD32 idx ; if ( 1 == ( ps_dec -> u4_non_zero_cols | ps_dec -> u4_non_zero_rows ) ) idx = 0 ; else idx = 1 ; if ( 0 == ps_dec -> u2_prev_intra_mb ) { pu1_pred = pu1_out_p ; u4_pred_strd = ps_dec -> u2_picture_width >> 1 ; } else { pu1_pred = ( UWORD8 * ) gau1_impeg2_zerobuf ; u4_pred_strd = 8 ; } ps_dec -> pf_idct_recon [ idx * 2 + ps_dec -> i4_last_value_one ] ( pi2_vld_out , ps_dec -> ai2_idct_stg1 , pu1_pred , pu1_out_p , 8 , u4_pred_strd , ps_dec -> u2_picture_width >> 1 , ~ ps_dec -> u4_non_zero_cols , ~ ps_dec -> u4_non_zero_rows ) ; } } if ( ( ps_dec -> u2_cbp & 0x01 ) != 0 ) { pu1_out_p = ps_cur_frm_buf -> pu1_v + u4_x_dst_offset + u4_y_dst_offset ; e_error = ps_dec -> pf_vld_inv_quant ( ps_dec , pi2_vld_out , ps_dec -> pu1_inv_scan_matrix , ps_dec -> u2_prev_intra_mb , V_CHROMA , 0 ) ; if ( ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE != e_error ) { return e_error ; } IMPEG2D_IDCT_INP_STATISTICS ( pi2_vld_out , ps_dec -> u4_non_zero_cols , ps_dec -> u4_non_zero_rows ) ; PROFILE_DISABLE_IDCT_IF0 { WORD32 idx ; if ( 1 == ( ps_dec -> u4_non_zero_cols | ps_dec -> u4_non_zero_rows ) ) idx = 0 ; else idx = 1 ; if ( 0 == ps_dec -> u2_prev_intra_mb ) { pu1_pred = pu1_out_p ; u4_pred_strd = ps_dec -> u2_picture_width >> 1 ; } else { pu1_pred = ( UWORD8 * ) gau1_impeg2_zerobuf ; u4_pred_strd = 8 ; } ps_dec -> pf_idct_recon [ idx * 2 + ps_dec -> i4_last_value_one ] ( pi2_vld_out , ps_dec -> ai2_idct_stg1 , pu1_pred , pu1_out_p , 8 , u4_pred_strd , ps_dec -> u2_picture_width >> 1 , ~ ps_dec -> u4_non_zero_cols , ~ ps_dec -> u4_non_zero_rows ) ; } } ps_dec -> u2_num_mbs_left -- ; ps_dec -> u2_first_mb = 0 ; ps_dec -> u2_mb_x ++ ; if ( ps_dec -> s_bit_stream . u4_offset > ps_dec -> s_bit_stream . u4_max_offset ) { return IMPEG2D_BITSTREAM_BUFF_EXCEEDED_ERR ; } else if ( ps_dec -> u2_mb_x == ps_dec -> u2_num_horiz_mb ) { ps_dec -> u2_mb_x = 0 ; ps_dec -> u2_mb_y ++ ; } } while ( ps_dec -> u2_num_mbs_left != 0 && impeg2d_bit_stream_nxt ( & ps_dec -> s_bit_stream , 23 ) != 0x0 ) ; return e_error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return IMPEG2D_MB_TEX_DECODE_ERR ; if ( 0 >= ps_dec -> u2_num_mbs_left ) { break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_set_contexts ( const MACROBLOCKD * xd , struct macroblockd_plane * pd , BLOCK_SIZE plane_bsize , TX_SIZE tx_size , int has_eob , int aoff , int loff ) { ENTROPY_CONTEXT * const a = pd -> above_context + aoff ; ENTROPY_CONTEXT * const l = pd -> left_context + loff ; const int tx_size_in_blocks = 1 << tx_size ; if ( has_eob && xd -> mb_to_right_edge < 0 ) { int i ; const int blocks_wide = num_4x4_blocks_wide_lookup [ plane_bsize ] + ( xd -> mb_to_right_edge >> ( 5 + pd -> subsampling_x ) ) ; int above_contexts = tx_size_in_blocks ; if ( above_contexts + aoff > blocks_wide ) above_contexts = blocks_wide - aoff ; for ( i = 0 ; i < above_contexts ; ++ i ) a [ i ] = has_eob ; for ( i = above_contexts ; i < tx_size_in_blocks ; ++ i ) a [ i ] = 0 ; } else { <S2SV_StartBug> vpx_memset ( a , has_eob , sizeof ( ENTROPY_CONTEXT ) * tx_size_in_blocks ) ; <S2SV_EndBug> } if ( has_eob && xd -> mb_to_bottom_edge < 0 ) { int i ; const int blocks_high = num_4x4_blocks_high_lookup [ plane_bsize ] + ( xd -> mb_to_bottom_edge >> ( 5 + pd -> subsampling_y ) ) ; int left_contexts = tx_size_in_blocks ; if ( left_contexts + loff > blocks_high ) left_contexts = blocks_high - loff ; for ( i = 0 ; i < left_contexts ; ++ i ) l [ i ] = has_eob ; for ( i = left_contexts ; i < tx_size_in_blocks ; ++ i ) l [ i ] = 0 ; } else { <S2SV_StartBug> vpx_memset ( l , has_eob , sizeof ( ENTROPY_CONTEXT ) * tx_size_in_blocks ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { memset <S2SV_ModEnd> ( a , <S2SV_ModStart> } else { memset <S2SV_ModEnd> ( l ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_dequant_idct_add_y_block_mmx ( short * q , short * dq , unsigned char * dst , int stride , char * eobs ) { int i ; for ( i = 0 ; i < 4 ; i ++ ) { if ( eobs [ 0 ] > 1 ) vp8_dequant_idct_add_mmx ( q , dq , dst , stride ) ; else if ( eobs [ 0 ] == 1 ) { vp8_dc_only_idct_add_mmx ( q [ 0 ] * dq [ 0 ] , dst , stride , dst , stride ) ; <S2SV_StartBug> vpx_memset ( q , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } if ( eobs [ 1 ] > 1 ) vp8_dequant_idct_add_mmx ( q + 16 , dq , dst + 4 , stride ) ; else if ( eobs [ 1 ] == 1 ) { vp8_dc_only_idct_add_mmx ( q [ 16 ] * dq [ 0 ] , dst + 4 , stride , dst + 4 , stride ) ; <S2SV_StartBug> vpx_memset ( q + 16 , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } if ( eobs [ 2 ] > 1 ) vp8_dequant_idct_add_mmx ( q + 32 , dq , dst + 8 , stride ) ; else if ( eobs [ 2 ] == 1 ) { vp8_dc_only_idct_add_mmx ( q [ 32 ] * dq [ 0 ] , dst + 8 , stride , dst + 8 , stride ) ; <S2SV_StartBug> vpx_memset ( q + 32 , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } if ( eobs [ 3 ] > 1 ) vp8_dequant_idct_add_mmx ( q + 48 , dq , dst + 12 , stride ) ; else if ( eobs [ 3 ] == 1 ) { vp8_dc_only_idct_add_mmx ( q [ 48 ] * dq [ 0 ] , dst + 12 , stride , dst + 12 , stride ) ; <S2SV_StartBug> vpx_memset ( q + 48 , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } q += 64 ; dst += 4 * stride ; eobs += 4 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q , <S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q + <S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q + <S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4471\n\n```\nCWE-189 int lzxd_decompress ( struct lzxd_stream * lzx , off_t out_bytes ) { register unsigned int bit_buffer ; register int bits_left , i = 0 ; unsigned char * i_ptr , * i_end ; register unsigned short sym ; int match_length , length_footer , extra , verbatim_bits , bytes_todo ; int this_run , main_element , aligned_bits , j ; unsigned char * window , * runsrc , * rundest , buf [ 12 ] ; unsigned int frame_size = 0 , end_frame , match_offset , window_posn ; unsigned int R0 , R1 , R2 ; if ( ! lzx || ( out_bytes < 0 ) ) return MSPACK_ERR_ARGS ; if ( lzx -> error ) return lzx -> error ; i = lzx -> o_end - lzx -> o_ptr ; if ( ( off_t ) i > out_bytes ) i = ( int ) out_bytes ; if ( i ) { if ( lzx -> sys -> write ( lzx -> output , lzx -> o_ptr , i ) != i ) { return lzx -> error = MSPACK_ERR_WRITE ; } lzx -> o_ptr += i ; lzx -> offset += i ; out_bytes -= i ; } if ( out_bytes == 0 ) return MSPACK_ERR_OK ; RESTORE_BITS ; window = lzx -> window ; window_posn = lzx -> window_posn ; R0 = lzx -> R0 ; R1 = lzx -> R1 ; R2 = lzx -> R2 ; end_frame = ( unsigned int ) ( ( lzx -> offset + out_bytes ) / LZX_FRAME_SIZE ) + 1 ; while ( lzx -> frame < end_frame ) { if ( lzx -> reset_interval && ( ( lzx -> frame % lzx -> reset_interval ) == 0 ) ) { if ( lzx -> block_remaining ) { D ( ( \"%d<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>at<S2SV_blank>reset<S2SV_blank>interval\" , lzx -> block_remaining ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } lzxd_reset_state ( lzx ) ; R0 = lzx -> R0 ; R1 = lzx -> R1 ; R2 = lzx -> R2 ; } if ( lzx -> is_delta ) { ENSURE_BITS ( 16 ) ; REMOVE_BITS ( 16 ) ; } if ( ! lzx -> header_read ) { j = 0 ; READ_BITS ( i , 1 ) ; if ( i ) { READ_BITS ( i , 16 ) ; READ_BITS ( j , 16 ) ; } lzx -> intel_filesize = ( i << 16 ) | j ; lzx -> header_read = 1 ; } frame_size = LZX_FRAME_SIZE ; if ( lzx -> length && ( lzx -> length - lzx -> offset ) < ( off_t ) frame_size ) { frame_size = lzx -> length - lzx -> offset ; } bytes_todo = lzx -> frame_posn + frame_size - window_posn ; while ( bytes_todo > 0 ) { if ( lzx -> block_remaining == 0 ) { if ( ( lzx -> block_type == LZX_BLOCKTYPE_UNCOMPRESSED ) && ( lzx -> block_length & 1 ) ) { READ_IF_NEEDED ; i_ptr ++ ; } READ_BITS ( lzx -> block_type , 3 ) ; READ_BITS ( i , 16 ) ; READ_BITS ( j , 8 ) ; lzx -> block_remaining = lzx -> block_length = ( i << 8 ) | j ; switch ( lzx -> block_type ) { case LZX_BLOCKTYPE_ALIGNED : for ( i = 0 ; i < 8 ; i ++ ) { READ_BITS ( j , 3 ) ; lzx -> ALIGNED_len [ i ] = j ; } BUILD_TABLE ( ALIGNED ) ; case LZX_BLOCKTYPE_VERBATIM : READ_LENGTHS ( MAINTREE , 0 , 256 ) ; READ_LENGTHS ( MAINTREE , 256 , LZX_NUM_CHARS + lzx -> num_offsets ) ; BUILD_TABLE ( MAINTREE ) ; if ( lzx -> MAINTREE_len [ 0xE8 ] != 0 ) lzx -> intel_started = 1 ; READ_LENGTHS ( LENGTH , 0 , LZX_NUM_SECONDARY_LENGTHS ) ; BUILD_TABLE_MAYBE_EMPTY ( LENGTH ) ; break ; case LZX_BLOCKTYPE_UNCOMPRESSED : lzx -> intel_started = 1 ; <S2SV_StartBug> ENSURE_BITS ( 16 ) ; <S2SV_EndBug> if ( bits_left > 16 ) i_ptr -= 2 ; bits_left = 0 ; bit_buffer = 0 ; for ( rundest = & buf [ 0 ] , i = 0 ; i < 12 ; i ++ ) { READ_IF_NEEDED ; * rundest ++ = * i_ptr ++ ; } R0 = buf [ 0 ] | ( buf [ 1 ] << 8 ) | ( buf [ 2 ] << 16 ) | ( buf [ 3 ] << 24 ) ; R1 = buf [ 4 ] | ( buf [ 5 ] << 8 ) | ( buf [ 6 ] << 16 ) | ( buf [ 7 ] << 24 ) ; R2 = buf [ 8 ] | ( buf [ 9 ] << 8 ) | ( buf [ 10 ] << 16 ) | ( buf [ 11 ] << 24 ) ; break ; default : D ( ( \"bad<S2SV_blank>block<S2SV_blank>type\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } } this_run = lzx -> block_remaining ; if ( this_run > bytes_todo ) this_run = bytes_todo ; bytes_todo -= this_run ; lzx -> block_remaining -= this_run ; switch ( lzx -> block_type ) { case LZX_BLOCKTYPE_VERBATIM : while ( this_run > 0 ) { READ_HUFFSYM ( MAINTREE , main_element ) ; if ( main_element < LZX_NUM_CHARS ) { window [ window_posn ++ ] = main_element ; this_run -- ; } else { main_element -= LZX_NUM_CHARS ; match_length = main_element & LZX_NUM_PRIMARY_LENGTHS ; if ( match_length == LZX_NUM_PRIMARY_LENGTHS ) { if ( lzx -> LENGTH_empty ) { D ( ( \"LENGTH<S2SV_blank>symbol<S2SV_blank>needed<S2SV_blank>but<S2SV_blank>tree<S2SV_blank>is<S2SV_blank>empty\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } READ_HUFFSYM ( LENGTH , length_footer ) ; match_length += length_footer ; } match_length += LZX_MIN_MATCH ; switch ( ( match_offset = ( main_element >> 3 ) ) ) { case 0 : match_offset = R0 ; break ; case 1 : match_offset = R1 ; R1 = R0 ; R0 = match_offset ; break ; case 2 : match_offset = R2 ; R2 = R0 ; R0 = match_offset ; break ; case 3 : match_offset = 1 ; R2 = R1 ; R1 = R0 ; R0 = match_offset ; break ; default : extra = ( match_offset >= 36 ) ? 17 : extra_bits [ match_offset ] ; READ_BITS ( verbatim_bits , extra ) ; match_offset = position_base [ match_offset ] - 2 + verbatim_bits ; R2 = R1 ; R1 = R0 ; R0 = match_offset ; } if ( match_length == LZX_MAX_MATCH && lzx -> is_delta ) { int extra_len = 0 ; ENSURE_BITS ( 3 ) ; if ( PEEK_BITS ( 1 ) == 0 ) { REMOVE_BITS ( 1 ) ; READ_BITS ( extra_len , 8 ) ; } else if ( PEEK_BITS ( 2 ) == 2 ) { REMOVE_BITS ( 2 ) ; READ_BITS ( extra_len , 10 ) ; extra_len += 0x100 ; } else if ( PEEK_BITS ( 3 ) == 6 ) { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 12 ) ; extra_len += 0x500 ; } else { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 15 ) ; } match_length += extra_len ; } if ( ( window_posn + match_length ) > lzx -> window_size ) { D ( ( \"match<S2SV_blank>ran<S2SV_blank>over<S2SV_blank>window<S2SV_blank>wrap\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } rundest = & window [ window_posn ] ; i = match_length ; if ( match_offset > window_posn ) { if ( match_offset > lzx -> offset && ( match_offset - window_posn ) > lzx -> ref_data_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>LZX<S2SV_blank>stream\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } j = match_offset - window_posn ; if ( j > ( int ) lzx -> window_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>window<S2SV_blank>boundaries\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } runsrc = & window [ lzx -> window_size - j ] ; if ( j < i ) { i -= j ; while ( j -- > 0 ) * rundest ++ = * runsrc ++ ; runsrc = window ; } while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } else { runsrc = rundest - match_offset ; while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } this_run -= match_length ; window_posn += match_length ; } } break ; case LZX_BLOCKTYPE_ALIGNED : while ( this_run > 0 ) { READ_HUFFSYM ( MAINTREE , main_element ) ; if ( main_element < LZX_NUM_CHARS ) { window [ window_posn ++ ] = main_element ; this_run -- ; } else { main_element -= LZX_NUM_CHARS ; match_length = main_element & LZX_NUM_PRIMARY_LENGTHS ; if ( match_length == LZX_NUM_PRIMARY_LENGTHS ) { if ( lzx -> LENGTH_empty ) { D ( ( \"LENGTH<S2SV_blank>symbol<S2SV_blank>needed<S2SV_blank>but<S2SV_blank>tree<S2SV_blank>is<S2SV_blank>empty\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } READ_HUFFSYM ( LENGTH , length_footer ) ; match_length += length_footer ; } match_length += LZX_MIN_MATCH ; switch ( ( match_offset = ( main_element >> 3 ) ) ) { case 0 : match_offset = R0 ; break ; case 1 : match_offset = R1 ; R1 = R0 ; R0 = match_offset ; break ; case 2 : match_offset = R2 ; R2 = R0 ; R0 = match_offset ; break ; default : extra = ( match_offset >= 36 ) ? 17 : extra_bits [ match_offset ] ; match_offset = position_base [ match_offset ] - 2 ; if ( extra > 3 ) { extra -= 3 ; READ_BITS ( verbatim_bits , extra ) ; match_offset += ( verbatim_bits << 3 ) ; READ_HUFFSYM ( ALIGNED , aligned_bits ) ; match_offset += aligned_bits ; } else if ( extra == 3 ) { READ_HUFFSYM ( ALIGNED , aligned_bits ) ; match_offset += aligned_bits ; } else if ( extra > 0 ) { READ_BITS ( verbatim_bits , extra ) ; match_offset += verbatim_bits ; } else { match_offset = 1 ; } R2 = R1 ; R1 = R0 ; R0 = match_offset ; } if ( match_length == LZX_MAX_MATCH && lzx -> is_delta ) { int extra_len = 0 ; ENSURE_BITS ( 3 ) ; if ( PEEK_BITS ( 1 ) == 0 ) { REMOVE_BITS ( 1 ) ; READ_BITS ( extra_len , 8 ) ; } else if ( PEEK_BITS ( 2 ) == 2 ) { REMOVE_BITS ( 2 ) ; READ_BITS ( extra_len , 10 ) ; extra_len += 0x100 ; } else if ( PEEK_BITS ( 3 ) == 6 ) { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 12 ) ; extra_len += 0x500 ; } else { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 15 ) ; } match_length += extra_len ; } if ( ( window_posn + match_length ) > lzx -> window_size ) { D ( ( \"match<S2SV_blank>ran<S2SV_blank>over<S2SV_blank>window<S2SV_blank>wrap\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } rundest = & window [ window_posn ] ; i = match_length ; if ( match_offset > window_posn ) { if ( match_offset > lzx -> offset && ( match_offset - window_posn ) > lzx -> ref_data_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>LZX<S2SV_blank>stream\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } j = match_offset - window_posn ; if ( j > ( int ) lzx -> window_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>window<S2SV_blank>boundaries\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } runsrc = & window [ lzx -> window_size - j ] ; if ( j < i ) { i -= j ; while ( j -- > 0 ) * rundest ++ = * runsrc ++ ; runsrc = window ; } while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } else { runsrc = rundest - match_offset ; while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } this_run -= match_length ; window_posn += match_length ; } } break ; case LZX_BLOCKTYPE_UNCOMPRESSED : rundest = & window [ window_posn ] ; window_posn += this_run ; while ( this_run > 0 ) { if ( ( i = i_end - i_ptr ) == 0 ) { READ_IF_NEEDED ; } else { if ( i > this_run ) i = this_run ; lzx -> sys -> copy ( i_ptr , rundest , ( size_t ) i ) ; rundest += i ; i_ptr += i ; this_run -= i ; } } break ; default : return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( this_run < 0 ) { if ( ( unsigned int ) ( - this_run ) > lzx -> block_remaining ) { D ( ( \"overrun<S2SV_blank>went<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>block<S2SV_blank>by<S2SV_blank>%d<S2SV_blank>(%d<S2SV_blank>remaining)\" , - this_run , lzx -> block_remaining ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } lzx -> block_remaining -= - this_run ; } } if ( ( window_posn - lzx -> frame_posn ) != frame_size ) { D ( ( \"decode<S2SV_blank>beyond<S2SV_blank>output<S2SV_blank>frame<S2SV_blank>limits!<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>%d\" , window_posn - lzx -> frame_posn , frame_size ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( bits_left > 0 ) ENSURE_BITS ( 16 ) ; if ( bits_left & 15 ) REMOVE_BITS ( bits_left & 15 ) ; if ( lzx -> o_ptr != lzx -> o_end ) { D ( ( \"%ld<S2SV_blank>avail<S2SV_blank>bytes,<S2SV_blank>new<S2SV_blank>%d<S2SV_blank>frame\" , ( long ) ( lzx -> o_end - lzx -> o_ptr ) , frame_size ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( lzx -> intel_started && lzx -> intel_filesize && ( lzx -> frame <= 32768 ) && ( frame_size > 10 ) ) { unsigned char * data = & lzx -> e8_buf [ 0 ] ; unsigned char * dataend = & lzx -> e8_buf [ frame_size - 10 ] ; signed int curpos = lzx -> intel_curpos ; signed int filesize = lzx -> intel_filesize ; signed int abs_off , rel_off ; lzx -> o_ptr = data ; lzx -> sys -> copy ( & lzx -> window [ lzx -> frame_posn ] , data , frame_size ) ; while ( data < dataend ) { if ( * data ++ != 0xE8 ) { curpos ++ ; continue ; } abs_off = data [ 0 ] | ( data [ 1 ] << 8 ) | ( data [ 2 ] << 16 ) | ( data [ 3 ] << 24 ) ; if ( ( abs_off >= - curpos ) && ( abs_off < filesize ) ) { rel_off = ( abs_off >= 0 ) ? abs_off - curpos : abs_off + filesize ; data [ 0 ] = ( unsigned char ) rel_off ; data [ 1 ] = ( unsigned char ) ( rel_off >> 8 ) ; data [ 2 ] = ( unsigned char ) ( rel_off >> 16 ) ; data [ 3 ] = ( unsigned char ) ( rel_off >> 24 ) ; } data += 4 ; curpos += 5 ; } lzx -> intel_curpos += frame_size ; } else { lzx -> o_ptr = & lzx -> window [ lzx -> frame_posn ] ; if ( lzx -> intel_filesize ) lzx -> intel_curpos += frame_size ; } lzx -> o_end = & lzx -> o_ptr [ frame_size ] ; i = ( out_bytes < ( off_t ) frame_size ) ? ( unsigned int ) out_bytes : frame_size ; if ( lzx -> sys -> write ( lzx -> output , lzx -> o_ptr , i ) != i ) { return lzx -> error = MSPACK_ERR_WRITE ; } lzx -> o_ptr += i ; lzx -> offset += i ; out_bytes -= i ; lzx -> frame_posn += frame_size ; lzx -> frame ++ ; if ( window_posn == lzx -> window_size ) window_posn = 0 ; if ( lzx -> frame_posn == lzx -> window_size ) lzx -> frame_posn = 0 ; } if ( out_bytes ) { D ( ( \"bytes<S2SV_blank>left<S2SV_blank>to<S2SV_blank>output\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } STORE_BITS ; lzx -> window_posn = window_posn ; lzx -> R0 = R0 ; lzx -> R1 = R1 ; lzx -> R2 = R2 ; return MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 1 ; if ( bits_left == 0 ) <S2SV_ModStart> ( 16 ) <S2SV_ModEnd> ; bits_left =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static void nsc_rle_decompress_data ( NSC_CONTEXT * context ) <S2SV_EndBug> { UINT16 i ; BYTE * rle ; UINT32 planeSize ; UINT32 originalSize ; <S2SV_StartBug> rle = context -> Planes ; <S2SV_EndBug> for ( i = 0 ; i < 4 ; i ++ ) { originalSize = context -> OrgByteCount [ i ] ; planeSize = context -> PlaneByteCount [ i ] ; if ( planeSize == 0 ) <S2SV_StartBug> FillMemory ( context -> priv -> PlaneBuffers [ i ] , originalSize , 0xFF ) ; <S2SV_EndBug> <S2SV_StartBug> else if ( planeSize < originalSize ) <S2SV_EndBug> <S2SV_StartBug> nsc_rle_decode ( rle , context -> priv -> PlaneBuffers [ i ] , originalSize ) ; <S2SV_EndBug> else CopyMemory ( context -> priv -> PlaneBuffers [ i ] , rle , originalSize ) ; <S2SV_StartBug> rle += planeSize ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> nsc_rle_decompress_data ( NSC_CONTEXT <S2SV_ModStart> UINT32 originalSize ; if ( ! context ) return FALSE ; <S2SV_ModStart> == 0 ) { if ( context -> priv -> PlaneBuffersLength < originalSize ) return FALSE ; <S2SV_ModStart> 0xFF ) ; } <S2SV_ModStart> < originalSize ) { if ( ! <S2SV_ModStart> i ] , context -> priv -> PlaneBuffersLength , originalSize ) ) return FALSE ; } else { if ( context -> priv -> PlaneBuffersLength < originalSize ) return FALSE ; <S2SV_ModEnd> CopyMemory ( context <S2SV_ModStart> originalSize ) ; } <S2SV_ModStart> planeSize ; } return TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3212\n\n```\nCWE-362 static void sctp_close ( struct sock * sk , long timeout ) { struct net * net = sock_net ( sk ) ; struct sctp_endpoint * ep ; struct sctp_association * asoc ; struct list_head * pos , * temp ; unsigned int data_was_unread ; pr_debug ( \"%s:<S2SV_blank>sk:%p,<S2SV_blank>timeout:%ld\\\\n\" , __func__ , sk , timeout ) ; lock_sock ( sk ) ; sk -> sk_shutdown = SHUTDOWN_MASK ; sk -> sk_state = SCTP_SS_CLOSING ; ep = sctp_sk ( sk ) -> ep ; data_was_unread = sctp_queue_purge_ulpevents ( & sk -> sk_receive_queue ) ; data_was_unread += sctp_queue_purge_ulpevents ( & sctp_sk ( sk ) -> pd_lobby ) ; list_for_each_safe ( pos , temp , & ep -> asocs ) { asoc = list_entry ( pos , struct sctp_association , asocs ) ; if ( sctp_style ( sk , TCP ) ) { if ( sctp_state ( asoc , CLOSED ) ) { sctp_unhash_established ( asoc ) ; sctp_association_free ( asoc ) ; continue ; } } if ( data_was_unread || ! skb_queue_empty ( & asoc -> ulpq . lobby ) || ! skb_queue_empty ( & asoc -> ulpq . reasm ) || ( sock_flag ( sk , SOCK_LINGER ) && ! sk -> sk_lingertime ) ) { struct sctp_chunk * chunk ; chunk = sctp_make_abort_user ( asoc , NULL , 0 ) ; if ( chunk ) sctp_primitive_ABORT ( net , asoc , chunk ) ; } else sctp_primitive_SHUTDOWN ( net , asoc , NULL ) ; } if ( sctp_style ( sk , TCP ) && timeout ) sctp_wait_for_close ( sk , timeout ) ; release_sock ( sk ) ; <S2SV_StartBug> local_bh_disable ( ) ; <S2SV_EndBug> bh_lock_sock ( sk ) ; sock_hold ( sk ) ; sk_common_release ( sk ) ; bh_unlock_sock ( sk ) ; <S2SV_StartBug> local_bh_enable ( ) ; <S2SV_EndBug> sock_put ( sk ) ; SCTP_DBG_OBJCNT_DEC ( sock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk ) ; spin_lock_bh ( & net -> sctp . addr_wq_lock <S2SV_ModEnd> ) ; bh_lock_sock <S2SV_ModStart> sk ) ; spin_unlock_bh ( & net -> sctp . addr_wq_lock <S2SV_ModEnd> ) ; sock_put\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7526\n\n```\nCWE-787 static void InsertRow ( Image * image , unsigned char * p , ssize_t y , int bpp , ExceptionInfo * exception ) { int bit ; Quantum index ; register Quantum * q ; ssize_t x ; switch ( bpp ) { case 1 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( ( * p ) & ( 0x80 >> bit ) ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( ssize_t ) ( image -> columns % 8 ) ; bit ++ ) { index = ( ( * p ) & ( 0x80 >> bit ) ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ! SyncAuthenticPixels ( image , exception ) ) break ; break ; } case 2 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; <S2SV_StartBug> for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 4 ) <S2SV_EndBug> { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; <S2SV_StartBug> p ++ ; <S2SV_EndBug> q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 4 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; <S2SV_StartBug> if ( ( image -> columns % 4 ) >= 1 ) <S2SV_EndBug> { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; <S2SV_StartBug> if ( ( image -> columns % 4 ) >= 2 ) <S2SV_EndBug> { index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; } } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; break ; } case 4 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x0f , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p ) & 0x0f , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x0f , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; break ; } case 8 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { index = ConstrainColormapIndex ( image , * p , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } break ; case 24 : q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) break ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> columns - 3 <S2SV_ModEnd> ) ; x <S2SV_ModStart> q ) ; q += GetPixelChannels ( image ) ; p ++ <S2SV_ModEnd> ; } if <S2SV_ModStart> % 4 ) > <S2SV_ModEnd> 1 ) { <S2SV_ModStart> % 4 ) > <S2SV_ModEnd> 2 ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 static struct sock * tcp_v6_syn_recv_sock ( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req ) { struct inet_request_sock * ireq ; struct ipv6_pinfo * newnp ; <S2SV_StartBug> const struct ipv6_pinfo * np = inet6_sk ( sk ) ; <S2SV_EndBug> struct tcp6_sock * newtcp6sk ; struct inet_sock * newinet ; struct tcp_sock * newtp ; struct sock * newsk ; # ifdef CONFIG_TCP_MD5SIG struct tcp_md5sig_key * key ; # endif struct flowi6 fl6 ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = tcp_v4_syn_recv_sock ( sk , skb , req , dst , req_unhash , own_req ) ; if ( ! newsk ) return NULL ; newtcp6sk = ( struct tcp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newtcp6sk -> inet6 ; newinet = inet_sk ( newsk ) ; newnp = inet6_sk ( newsk ) ; newtp = tcp_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newnp -> saddr = newsk -> sk_v6_rcv_saddr ; inet_csk ( newsk ) -> icsk_af_ops = & ipv6_mapped ; newsk -> sk_backlog_rcv = tcp_v4_do_rcv ; # ifdef CONFIG_TCP_MD5SIG newtp -> af_specific = & tcp_sock_ipv6_mapped_specific ; # endif newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = tcp_v6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; newnp -> rcv_flowinfo = ip6_flowinfo ( ipv6_hdr ( skb ) ) ; if ( np -> repflow ) newnp -> flow_label = ip6_flowlabel ( ipv6_hdr ( skb ) ) ; tcp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } ireq = inet_rsk ( req ) ; if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( ! dst ) { dst = inet6_csk_route_req ( sk , & fl6 , req , IPPROTO_TCP ) ; if ( ! dst ) goto out ; } newsk = tcp_create_openreq_child ( sk , req , skb ) ; if ( ! newsk ) goto out_nonewsk ; newsk -> sk_gso_type = SKB_GSO_TCPV6 ; __ip6_dst_store ( newsk , dst , NULL , NULL ) ; inet6_sk_rx_dst_set ( newsk , skb ) ; newtcp6sk = ( struct tcp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newtcp6sk -> inet6 ; newtp = tcp_sk ( newsk ) ; newinet = inet_sk ( newsk ) ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newsk -> sk_v6_daddr = ireq -> ir_v6_rmt_addr ; newnp -> saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_v6_rcv_saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_bound_dev_if = ireq -> ir_iif ; newinet -> inet_opt = NULL ; newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL ; newnp -> rxopt . all = np -> rxopt . all ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = tcp_v6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; newnp -> rcv_flowinfo = ip6_flowinfo ( ipv6_hdr ( skb ) ) ; if ( np -> repflow ) newnp -> flow_label = ip6_flowlabel ( ipv6_hdr ( skb ) ) ; <S2SV_StartBug> if ( np -> opt ) <S2SV_EndBug> <S2SV_StartBug> newnp -> opt = ipv6_dup_options ( newsk , np -> opt ) ; <S2SV_EndBug> inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( newnp -> opt ) <S2SV_EndBug> <S2SV_StartBug> inet_csk ( newsk ) -> icsk_ext_hdr_len = ( newnp -> opt -> opt_nflen + <S2SV_EndBug> <S2SV_StartBug> newnp -> opt -> opt_flen ) ; <S2SV_EndBug> tcp_ca_openreq_child ( newsk , dst ) ; tcp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newtp -> advmss = dst_metric_advmss ( dst ) ; if ( tcp_sk ( sk ) -> rx_opt . user_mss && tcp_sk ( sk ) -> rx_opt . user_mss < newtp -> advmss ) newtp -> advmss = tcp_sk ( sk ) -> rx_opt . user_mss ; tcp_initialize_rcv_mss ( newsk ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; # ifdef CONFIG_TCP_MD5SIG key = tcp_v6_md5_do_lookup ( sk , & newsk -> sk_v6_daddr ) ; if ( key ) { tcp_md5_do_add ( newsk , ( union tcp_md5_addr * ) & newsk -> sk_v6_daddr , AF_INET6 , key -> key , key -> keylen , sk_gfp_atomic ( sk , GFP_ATOMIC ) ) ; } # endif if ( __inet_inherit_port ( sk , newsk ) < 0 ) { inet_csk_prepare_forced_close ( newsk ) ; tcp_done ( newsk ) ; goto out ; } * own_req = inet_ehash_nolisten ( newsk , req_to_sk ( req_unhash ) ) ; if ( * own_req ) { tcp_move_syn ( newtp , req ) ; if ( ireq -> pktopts ) { newnp -> pktoptions = skb_clone ( ireq -> pktopts , sk_gfp_atomic ( sk , GFP_ATOMIC ) ) ; consume_skb ( ireq -> pktopts ) ; ireq -> pktopts = NULL ; if ( newnp -> pktoptions ) skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } } return newsk ; out_overflow : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; struct ipv6_txoptions * opt <S2SV_ModStart> ) ) ; opt = rcu_dereference <S2SV_ModEnd> ( np -> <S2SV_ModStart> -> opt ) ; if ( opt ) { <S2SV_ModEnd> opt = ipv6_dup_options <S2SV_ModStart> ( newsk , opt ) ; RCU_INIT_POINTER ( newnp -> opt , opt ) ; } <S2SV_ModEnd> inet_csk ( newsk <S2SV_ModStart> ; if ( <S2SV_ModEnd> opt ) inet_csk <S2SV_ModStart> -> icsk_ext_hdr_len = <S2SV_ModEnd> opt -> opt_nflen <S2SV_ModStart> -> opt_nflen + <S2SV_ModEnd> opt -> opt_flen <S2SV_ModStart> opt -> opt_flen <S2SV_ModEnd> ; tcp_ca_openreq_child (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int cost_mv_ref ( const VP9_COMP * cpi , MB_PREDICTION_MODE mode , <S2SV_EndBug> <S2SV_StartBug> int mode_context ) { <S2SV_EndBug> const MACROBLOCK * const x = & cpi -> mb ; const int segment_id = x -> e_mbd . mi [ 0 ] -> mbmi . segment_id ; if ( ! vp9_segfeature_active ( & cpi -> common . seg , segment_id , SEG_LVL_SKIP ) ) { assert ( is_inter_mode ( mode ) ) ; <S2SV_StartBug> return x -> inter_mode_cost [ mode_context ] [ INTER_OFFSET ( mode ) ] ; <S2SV_EndBug> <S2SV_StartBug> } else { <S2SV_EndBug> return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , PREDICTION_MODE <S2SV_ModEnd> mode , int <S2SV_ModStart> , int mode_context <S2SV_ModEnd> ) { assert <S2SV_ModStart> ) ; return cpi <S2SV_ModEnd> -> inter_mode_cost [ <S2SV_ModStart> ] ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12992\n\n```\nCWE-125 void ripng_print ( netdissect_options * ndo , const u_char * dat , unsigned int length ) { register const struct rip6 * rp = ( const struct rip6 * ) dat ; register const struct netinfo6 * ni ; <S2SV_StartBug> register u_int amt ; <S2SV_EndBug> register u_int i ; int j ; int trunc ; if ( ndo -> ndo_snapend < dat ) return ; amt = ndo -> ndo_snapend - dat ; i = min ( length , amt ) ; if ( i < ( sizeof ( struct rip6 ) - sizeof ( struct netinfo6 ) ) ) return ; i -= ( sizeof ( struct rip6 ) - sizeof ( struct netinfo6 ) ) ; switch ( rp -> rip6_cmd ) { case RIP6_REQUEST : <S2SV_StartBug> j = length / sizeof ( * ni ) ; <S2SV_EndBug> if ( j == 1 <S2SV_StartBug> && rp -> rip6_nets -> rip6_metric == HOPCNT_INFINITY6 <S2SV_EndBug> && IN6_IS_ADDR_UNSPECIFIED ( & rp -> rip6_nets -> rip6_dest ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ripng-req<S2SV_blank>dump\" ) ) ; break ; } <S2SV_StartBug> if ( j * sizeof ( * ni ) != length - 4 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>ripng-req<S2SV_blank>%d[%u]:\" , j , length ) ) ; else <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>ripng-req<S2SV_blank>%d:\" , j ) ) ; <S2SV_EndBug> trunc = ( ( i / sizeof ( * ni ) ) * sizeof ( * ni ) != i ) ; <S2SV_StartBug> for ( ni = rp -> rip6_nets ; i >= sizeof ( * ni ) ; <S2SV_EndBug> <S2SV_StartBug> i -= sizeof ( * ni ) , ++ ni ) { <S2SV_EndBug> if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; rip6_entry_print ( ndo , ni , 0 ) ; } <S2SV_StartBug> break ; <S2SV_EndBug> case RIP6_RESPONSE : <S2SV_StartBug> j = length / sizeof ( * ni ) ; <S2SV_EndBug> <S2SV_StartBug> if ( j * sizeof ( * ni ) != length - 4 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>ripng-resp<S2SV_blank>%d[%u]:\" , j , length ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>ripng-resp<S2SV_blank>%d:\" , j ) ) ; <S2SV_StartBug> trunc = ( ( i / sizeof ( * ni ) ) * sizeof ( * ni ) != i ) ; <S2SV_EndBug> <S2SV_StartBug> for ( ni = rp -> rip6_nets ; i >= sizeof ( * ni ) ; <S2SV_EndBug> <S2SV_StartBug> i -= sizeof ( * ni ) , ++ ni ) { <S2SV_EndBug> if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; rip6_entry_print ( ndo , ni , ni -> rip6_metric ) ; } <S2SV_StartBug> if ( trunc ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"[|ripng]\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>ripng-%d<S2SV_blank>??<S2SV_blank>%u\" , rp -> rip6_cmd , length ) ) ; break ; <S2SV_StartBug> } <S2SV_EndBug> if ( rp -> rip6_vers != RIP6_VERSION ) ND_PRINT ( ( ndo , \"<S2SV_blank>[vers<S2SV_blank>%d]\" , rp -> rip6_vers ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ni ; unsigned int length_left ; u_int j ; ND_TCHECK ( rp -> rip6_cmd <S2SV_ModEnd> ) ; switch <S2SV_ModStart> case RIP6_REQUEST : length_left = length ; if ( length_left < ( sizeof ( struct rip6 ) - sizeof ( struct netinfo6 ) ) ) goto trunc ; length_left -= ( sizeof ( struct rip6 ) - sizeof ( struct netinfo6 ) ) ; j = length_left <S2SV_ModEnd> / sizeof ( <S2SV_ModStart> j == 1 ) { ND_TCHECK ( rp -> rip6_nets ) ; if ( <S2SV_ModEnd> rp -> rip6_nets <S2SV_ModStart> break ; } } <S2SV_ModStart> ni ) != length_left ) ND_PRINT ( ( ndo , \"<S2SV_blank>ripng-req<S2SV_blank>%u[%u]:\" , j , length <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( ndo , \"<S2SV_blank>ripng-req<S2SV_blank>%u:\" , j ) <S2SV_ModEnd> ) ; for <S2SV_ModStart> -> rip6_nets ; length_left <S2SV_ModEnd> >= sizeof ( <S2SV_ModStart> ni ) ; length_left <S2SV_ModEnd> -= sizeof ( <S2SV_ModStart> ni ) { ND_TCHECK ( * ni ) ; <S2SV_ModStart> ) ; } if ( length_left != 0 ) goto trunc ; <S2SV_ModStart> case RIP6_RESPONSE : length_left = length ; if ( length_left < ( sizeof ( struct rip6 ) - sizeof ( struct netinfo6 ) ) ) goto trunc ; length_left -= ( sizeof ( struct rip6 ) - sizeof ( struct netinfo6 ) ) ; j = length_left <S2SV_ModEnd> / sizeof ( <S2SV_ModStart> ni ) != length_left ) ND_PRINT ( ( ndo , \"<S2SV_blank>ripng-resp<S2SV_blank>%d[%u]:\" , j , length <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ) ) ; <S2SV_ModEnd> for ( ni <S2SV_ModStart> -> rip6_nets ; length_left <S2SV_ModEnd> >= sizeof ( <S2SV_ModStart> ni ) ; length_left <S2SV_ModEnd> -= sizeof ( <S2SV_ModStart> ni ) { ND_TCHECK ( * ni ) ; <S2SV_ModStart> } if ( length_left != 0 ) goto trunc <S2SV_ModEnd> ; break ; <S2SV_ModStart> break ; } ND_TCHECK ( rp -> rip6_vers ) ; <S2SV_ModStart> ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|ripng]\" ) ) ; return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6448\n\n```\nCWE-119 static int dalvik_disassemble ( RAsm * a , RAsmOp * op , const ut8 * buf , int len ) { int vA , vB , vC , payload = 0 , i = ( int ) buf [ 0 ] ; int size = dalvik_opcodes [ i ] . len ; char str [ 1024 ] , * strasm ; ut64 offset ; const char * flag_str ; op -> buf_asm [ 0 ] = 0 ; if ( buf [ 0 ] == 0x00 ) { switch ( buf [ 1 ] ) { case 0x01 : { unsigned short array_size = buf [ 2 ] | ( buf [ 3 ] << 8 ) ; int first_key = buf [ 4 ] | ( buf [ 5 ] << 8 ) | ( buf [ 6 ] << 16 ) | ( buf [ 7 ] << 24 ) ; <S2SV_StartBug> sprintf ( op -> buf_asm , \"packed-switch-payload<S2SV_blank>%d,<S2SV_blank>%d\" , array_size , first_key ) ; <S2SV_EndBug> size = 8 ; payload = 2 * ( array_size * 2 ) ; len = 0 ; } break ; case 0x02 : { unsigned short array_size = buf [ 2 ] | ( buf [ 3 ] << 8 ) ; <S2SV_StartBug> sprintf ( op -> buf_asm , \"sparse-switch-payload<S2SV_blank>%d\" , array_size ) ; <S2SV_EndBug> size = 4 ; payload = 2 * ( array_size * 4 ) ; len = 0 ; } break ; case 0x03 : if ( len > 7 ) { unsigned short elem_width = buf [ 2 ] | ( buf [ 3 ] << 8 ) ; unsigned int array_size = buf [ 4 ] | ( buf [ 5 ] << 8 ) | ( buf [ 6 ] << 16 ) | ( buf [ 7 ] << 24 ) ; snprintf ( op -> buf_asm , sizeof ( op -> buf_asm ) , \"fill-array-data-payload<S2SV_blank>%d,<S2SV_blank>%d\" , elem_width , array_size ) ; payload = 2 * ( ( array_size * elem_width + 1 ) / 2 ) ; } size = 8 ; len = 0 ; break ; default : break ; } } strasm = NULL ; if ( size <= len ) { strncpy ( op -> buf_asm , dalvik_opcodes [ i ] . name , sizeof ( op -> buf_asm ) - 1 ) ; strasm = strdup ( op -> buf_asm ) ; size = dalvik_opcodes [ i ] . len ; switch ( dalvik_opcodes [ i ] . fmt ) { case fmtop : break ; case fmtopvAvB : vA = buf [ 1 ] & 0x0f ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , vA , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAvBBBB : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , vA , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAAAvBBBB : vA = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; vB = ( buf [ 5 ] << 8 ) | buf [ 4 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , vA , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAA : vA = ( int ) buf [ 1 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i\" , vA ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAcB : vA = buf [ 1 ] & 0x0f ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>%#x\" , vA , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAcBBBB : vA = ( int ) buf [ 1 ] ; { short sB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>%#04hx\" , vA , sB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; } break ; case fmtopvAAcBBBBBBBB : vA = ( int ) buf [ 1 ] ; vB = buf [ 2 ] | ( buf [ 3 ] << 8 ) | ( buf [ 4 ] << 16 ) | ( buf [ 5 ] << 24 ) ; if ( buf [ 0 ] == 0x17 ) { snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i:v%i,<S2SV_blank>0x%08x\" , vA , vA + 1 , vB ) ; } else { snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>0x%08x\" , vA , vB ) ; } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAcBBBB0000 : vA = ( int ) buf [ 1 ] ; vB = 0 | ( buf [ 2 ] << 16 ) | ( buf [ 3 ] << 24 ) ; if ( buf [ 0 ] == 0x19 ) { snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i:v%i,<S2SV_blank>0x%08x\" , vA , vA + 1 , vB ) ; } else { snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>0x%08x\" , vA , vB ) ; } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAcBBBBBBBBBBBBBBBB : vA = ( int ) buf [ 1 ] ; # define llint long long int llint lB = ( llint ) buf [ 2 ] | ( ( llint ) buf [ 3 ] << 8 ) | ( ( llint ) buf [ 4 ] << 16 ) | ( ( llint ) buf [ 5 ] << 24 ) | ( ( llint ) buf [ 6 ] << 32 ) | ( ( llint ) buf [ 7 ] << 40 ) | ( ( llint ) buf [ 8 ] << 48 ) | ( ( llint ) buf [ 9 ] << 56 ) ; # undef llint <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i:v%i,<S2SV_blank>0x%\" PFMT64x , vA , vA + 1 , lB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAvBBvCC : vA = ( int ) buf [ 1 ] ; vB = ( int ) buf [ 2 ] ; vC = ( int ) buf [ 3 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i\" , vA , vB , vC ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAvBBcCC : vA = ( int ) buf [ 1 ] ; vB = ( int ) buf [ 2 ] ; vC = ( int ) buf [ 3 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%#x\" , vA , vB , vC ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAvBcCCCC : vA = buf [ 1 ] & 0x0f ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; vC = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%#x\" , vA , vB , vC ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtoppAA : vA = ( char ) buf [ 1 ] ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>0x%08\" PFMT64x , a -> pc + ( vA * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtoppAAAA : vA = ( short ) ( buf [ 3 ] << 8 | buf [ 2 ] ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>0x%08\" PFMT64x , a -> pc + ( vA * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAApBBBB : vA = ( int ) buf [ 1 ] ; vB = ( int ) ( buf [ 3 ] << 8 | buf [ 2 ] ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>0x%08\" PFMT64x , vA , a -> pc + ( vB * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtoppAAAAAAAA : vA = ( int ) ( buf [ 2 ] | ( buf [ 3 ] << 8 ) | ( buf [ 4 ] << 16 ) | ( buf [ 5 ] << 24 ) ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>0x%08\" PFMT64x , a -> pc + ( vA * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAvBpCCCC : vA = buf [ 1 ] & 0x0f ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; vC = ( int ) ( buf [ 3 ] << 8 | buf [ 2 ] ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>0x%08\" PFMT64x , vA , vB , a -> pc + ( vC * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAApBBBBBBBB : vA = ( int ) buf [ 1 ] ; vB = ( int ) ( buf [ 2 ] | ( buf [ 3 ] << 8 ) | ( buf [ 4 ] << 16 ) | ( buf [ 5 ] << 24 ) ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>0x%08\" PFMT64x , vA , a -> pc + vB ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptinlineI : vA = ( int ) ( buf [ 1 ] & 0x0f ) ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; * str = 0 ; switch ( vA ) { case 1 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i}\" , buf [ 4 ] & 0x0f ) ; <S2SV_EndBug> break ; case 2 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , ( buf [ 4 ] & 0xf0 ) >> 4 ) ; <S2SV_EndBug> break ; case 3 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f ) ; <S2SV_EndBug> break ; case 4 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f , ( buf [ 5 ] & 0xf0 ) >> 4 ) ; break ; default : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{}\" ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>[%04x]\" , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptinlineIR : case fmtoptinvokeVSR : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; vC = ( buf [ 5 ] << 8 ) | buf [ 4 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>[%04x]\" , vC , vC + vA - 1 , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptinvokeVS : vA = ( int ) ( buf [ 1 ] & 0xf0 ) >> 4 ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; switch ( vA ) { case 1 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i}\" , buf [ 4 ] & 0x0f ) ; <S2SV_EndBug> break ; case 2 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , ( buf [ 4 ] & 0xf0 ) >> 4 ) ; <S2SV_EndBug> break ; case 3 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f ) ; break ; case 4 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f , ( buf [ 5 ] & 0xf0 ) >> 4 ) ; break ; default : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{}\" ) ; <S2SV_EndBug> break ; } strasm = r_str_concat ( strasm , str ) ; <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>[%04x]\" , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAtBBBB : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; if ( buf [ 0 ] == 0x1a ) { offset = R_ASM_GET_OFFSET ( a , 's' , vB ) ; if ( offset == - 1 ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>string+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x , vA , offset ) ; <S2SV_EndBug> } } else if ( buf [ 0 ] == 0x1c || buf [ 0 ] == 0x1f || buf [ 0 ] == 0x22 ) { flag_str = R_ASM_GET_NAME ( a , 'c' , vB ) ; if ( ! flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>class+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>%s\" , vA , flag_str ) ; <S2SV_EndBug> } } else { flag_str = R_ASM_GET_NAME ( a , 'f' , vB ) ; if ( ! flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>field+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>%s\" , vA , flag_str ) ; <S2SV_EndBug> } } strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptopvAvBoCCCC : vA = ( buf [ 1 ] & 0x0f ) ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; vC = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; offset = R_ASM_GET_OFFSET ( a , 'o' , vC ) ; if ( offset == - 1 ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>[obj+%04x]\" , vA , vB , vC ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>[0x%\" PFMT64x \"]\" , vA , vB , offset ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopAAtBBBB : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; offset = R_ASM_GET_OFFSET ( a , 't' , vB ) ; if ( offset == - 1 ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>thing+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x , vA , offset ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAvBtCCCC : vA = ( buf [ 1 ] & 0x0f ) ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; vC = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; if ( buf [ 0 ] == 0x20 || buf [ 0 ] == 0x23 ) { flag_str = R_ASM_GET_NAME ( a , 'c' , vC ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%s\" , vA , vB , flag_str ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>class+%i\" , vA , vB , vC ) ; <S2SV_EndBug> } } else { flag_str = R_ASM_GET_NAME ( a , 'f' , vC ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%s\" , vA , vB , flag_str ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>field+%i\" , vA , vB , vC ) ; <S2SV_EndBug> } } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAtBBBBBBBB : vA = ( int ) buf [ 1 ] ; vB = ( int ) ( buf [ 5 ] | ( buf [ 4 ] << 8 ) | ( buf [ 3 ] << 16 ) | ( buf [ 2 ] << 24 ) ) ; offset = R_ASM_GET_OFFSET ( a , 's' , vB ) ; if ( offset == - 1 ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>string+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x , vA , offset ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvCCCCmBBBB : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; vC = ( buf [ 5 ] << 8 ) | buf [ 4 ] ; if ( buf [ 0 ] == 0x25 ) { flag_str = R_ASM_GET_NAME ( a , 'c' , vB ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>%s\" , vC , vC + vA - 1 , flag_str ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>class+%i\" , vC , vC + vA - 1 , vB ) ; <S2SV_EndBug> } } else { flag_str = R_ASM_GET_NAME ( a , 'm' , vB ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>%s\" , vC , vC + vA - 1 , flag_str ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>method+%i\" , vC , vC + vA - 1 , vB ) ; <S2SV_EndBug> } } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvXtBBBB : vA = ( int ) ( buf [ 1 ] & 0xf0 ) >> 4 ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; switch ( vA ) { case 1 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i}\" , buf [ 4 ] & 0x0f ) ; <S2SV_EndBug> break ; case 2 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , ( buf [ 4 ] & 0xf0 ) >> 4 ) ; <S2SV_EndBug> break ; case 3 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f ) ; break ; case 4 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f , ( buf [ 5 ] & 0xf0 ) >> 4 ) ; break ; case 5 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f , ( buf [ 5 ] & 0xf0 ) >> 4 , buf [ 1 ] & 0x0f ) ; break ; default : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{}\" ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; if ( buf [ 0 ] == 0x24 ) { flag_str = R_ASM_GET_NAME ( a , 'c' , vB ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>%s<S2SV_blank>;<S2SV_blank>0x%x\" , flag_str , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>class+%i\" , vB ) ; <S2SV_EndBug> } } else { flag_str = R_ASM_GET_NAME ( a , 'm' , vB ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>%s<S2SV_blank>;<S2SV_blank>0x%x\" , flag_str , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>method+%i\" , vB ) ; <S2SV_EndBug> } } strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptinvokeI : case fmtoptinvokeIR : case fmt00 : default : strcpy ( op -> buf_asm , \"invalid<S2SV_blank>\" ) ; free ( strasm ) ; strasm = NULL ; size = 2 ; } if ( strasm ) { strncpy ( op -> buf_asm , strasm , sizeof ( op -> buf_asm ) - 1 ) ; op -> buf_asm [ sizeof ( op -> buf_asm ) - 1 ] = 0 ; } else { strcpy ( op -> buf_asm , \"invalid\" ) ; } } else if ( len > 0 ) { strcpy ( op -> buf_asm , \"invalid<S2SV_blank>\" ) ; op -> size = len ; size = len ; } op -> payload = payload ; size += payload ; op -> size = size ; free ( strasm ) ; return size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 24 ) ; snprintf <S2SV_ModEnd> ( op -> <S2SV_ModStart> -> buf_asm , sizeof ( op -> buf_asm ) , <S2SV_ModStart> 8 ) ; snprintf <S2SV_ModEnd> ( op -> <S2SV_ModStart> op -> buf_asm , sizeof ( op -> buf_asm ) <S2SV_ModStart> >> 4 ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , <S2SV_ModStart> 2 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , <S2SV_ModStart> 4 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , <S2SV_ModStart> 1 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i\" , <S2SV_ModStart> >> 4 ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>%#x\" , <S2SV_ModStart> 2 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>%#04hx\" , <S2SV_ModStart> # undef llint snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i:v%i,<S2SV_blank>0x%\" PFMT64x <S2SV_ModStart> 3 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i\" , <S2SV_ModStart> 3 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%#x\" , <S2SV_ModStart> 2 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%#x\" , <S2SV_ModStart> case 1 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i}\" , <S2SV_ModStart> case 2 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 3 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 4 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> ; default : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{}\" ) <S2SV_ModStart> str ) ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>[%04x]\" , <S2SV_ModStart> 4 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>[%04x]\" , <S2SV_ModStart> case 1 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i}\" , <S2SV_ModStart> case 2 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 3 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 4 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> ; default : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{}\" ) <S2SV_ModStart> str ) ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>[%04x]\" , <S2SV_ModStart> 1 ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>string+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>class+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>%s\" , <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>field+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>%s\" , <S2SV_ModStart> 1 ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>[obj+%04x]\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>[0x%\" PFMT64x <S2SV_ModStart> 1 ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>thing+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%s\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>class+%i\" , <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%s\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>field+%i\" , <S2SV_ModStart> 1 ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>string+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>%s\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>class+%i\" , <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>%s\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>method+%i\" , <S2SV_ModStart> case 1 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i}\" , <S2SV_ModStart> case 2 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 3 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 4 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 5 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> ; default : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{}\" ) <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>%s<S2SV_blank>;<S2SV_blank>0x%x\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>class+%i\" , <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>%s<S2SV_blank>;<S2SV_blank>0x%x\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>method+%i\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11609\n\n```\nCWE-476 static int pb0100_start ( struct sd * sd ) { int err , packet_size , max_packet_size ; struct usb_host_interface * alt ; struct usb_interface * intf ; struct gspca_dev * gspca_dev = ( struct gspca_dev * ) sd ; struct cam * cam = & sd -> gspca_dev . cam ; u32 mode = cam -> cam_mode [ sd -> gspca_dev . curr_mode ] . priv ; intf = usb_ifnum_to_if ( sd -> gspca_dev . dev , sd -> gspca_dev . iface ) ; alt = usb_altnum_to_altsetting ( intf , sd -> gspca_dev . alt ) ; <S2SV_StartBug> if ( ! alt ) <S2SV_EndBug> return - ENODEV ; packet_size = le16_to_cpu ( alt -> endpoint [ 0 ] . desc . wMaxPacketSize ) ; max_packet_size = sd -> sensor -> max_packet_size [ sd -> gspca_dev . curr_mode ] ; if ( packet_size < max_packet_size ) stv06xx_write_sensor ( sd , PB_ROWSPEED , BIT ( 4 ) | BIT ( 3 ) | BIT ( 1 ) ) ; else stv06xx_write_sensor ( sd , PB_ROWSPEED , BIT ( 5 ) | BIT ( 3 ) | BIT ( 1 ) ) ; if ( mode & PB0100_CROP_TO_VGA ) { stv06xx_write_sensor ( sd , PB_RSTART , 30 ) ; stv06xx_write_sensor ( sd , PB_CSTART , 20 ) ; stv06xx_write_sensor ( sd , PB_RWSIZE , 240 - 1 ) ; stv06xx_write_sensor ( sd , PB_CWSIZE , 320 - 1 ) ; } else { stv06xx_write_sensor ( sd , PB_RSTART , 8 ) ; stv06xx_write_sensor ( sd , PB_CSTART , 4 ) ; stv06xx_write_sensor ( sd , PB_RWSIZE , 288 - 1 ) ; stv06xx_write_sensor ( sd , PB_CWSIZE , 352 - 1 ) ; } if ( mode & PB0100_SUBSAMPLE ) { stv06xx_write_bridge ( sd , STV_Y_CTRL , 0x02 ) ; stv06xx_write_bridge ( sd , STV_X_CTRL , 0x06 ) ; stv06xx_write_bridge ( sd , STV_SCAN_RATE , 0x10 ) ; } else { stv06xx_write_bridge ( sd , STV_Y_CTRL , 0x01 ) ; stv06xx_write_bridge ( sd , STV_X_CTRL , 0x0a ) ; stv06xx_write_bridge ( sd , STV_SCAN_RATE , 0x20 ) ; } err = stv06xx_write_sensor ( sd , PB_CONTROL , BIT ( 5 ) | BIT ( 3 ) | BIT ( 1 ) ) ; gspca_dbg ( gspca_dev , D_STREAM , \"Started<S2SV_blank>stream,<S2SV_blank>status:<S2SV_blank>%d\\\\n\" , err ) ; return ( err < 0 ) ? err : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! alt ) return - ENODEV ; if ( alt -> desc . bNumEndpoints < 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3587\n\n```\nCWE-189 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { size_t ofs , tail = ( i << 1 ) + 1 ; if ( cdf_check_stream_offset ( sst , h , p , tail * sizeof ( uint32_t ) , __LINE__ ) == - 1 ) goto out ; ofs = CDF_GETUINT32 ( p , tail ) ; q = ( const uint8_t * ) ( const void * ) ( ( const char * ) ( const void * ) p + ofs - 2 * sizeof ( uint32_t ) ) ; <S2SV_StartBug> if ( q > e ) { <S2SV_EndBug> DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%\" SIZE_T_FORMAT \"u)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=0x%tx,0x%x\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , offs ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; if ( nelements == 0 ) { DPRINTF ( ( \"CDF_VECTOR<S2SV_blank>with<S2SV_blank>nelements<S2SV_blank>==<S2SV_blank>0\\\\n\" ) ) ; goto out ; } o = 2 ; } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_FLOAT : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; u32 = CDF_TOLE4 ( u32 ) ; memcpy ( & inp [ i ] . pi_f , & u32 , sizeof ( inp [ i ] . pi_f ) ) ; break ; case CDF_DOUBLE : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; memcpy ( & inp [ i ] . pi_d , & u64 , sizeof ( inp [ i ] . pi_d ) ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , nelements ) ) ; for ( j = 0 ; j < nelements && i < sh . sh_properties ; j ++ , i ++ ) { uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; if ( l & 1 ) l ++ ; o += l >> 1 ; if ( q + o >= e ) goto out ; o4 = o * sizeof ( uint32_t ) ; } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; break ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( q < p || q\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15140\n\n```\nCWE-416 static Image * ReadMATImageV4 ( const ImageInfo * image_info , Image * image , ExceptionInfo * exception ) { typedef struct { unsigned char Type [ 4 ] ; unsigned int nRows ; unsigned int nCols ; unsigned int imagf ; unsigned int nameLen ; } MAT4_HDR ; long ldblk ; EndianType endian ; Image * rotated_image ; MagickBooleanType status ; MAT4_HDR HDR ; QuantumInfo * quantum_info ; QuantumFormatType format_type ; register ssize_t i ; ssize_t count , y ; unsigned char * pixels ; unsigned int depth ; quantum_info = ( QuantumInfo * ) NULL ; ( void ) SeekBlob ( image , 0 , SEEK_SET ) ; status = MagickTrue ; while ( EOFBlob ( image ) == MagickFalse ) { ldblk = ReadBlobLSBLong ( image ) ; <S2SV_StartBug> if ( ( ldblk > 9999 ) || ( ldblk < 0 ) ) <S2SV_EndBug> break ; HDR . Type [ 3 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 2 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 1 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 0 ] = ldblk ; if ( HDR . Type [ 3 ] != 0 ) break ; if ( HDR . Type [ 2 ] != 0 ) break ; if ( HDR . Type [ 0 ] == 0 ) { HDR . nRows = ReadBlobLSBLong ( image ) ; HDR . nCols = ReadBlobLSBLong ( image ) ; HDR . imagf = ReadBlobLSBLong ( image ) ; HDR . nameLen = ReadBlobLSBLong ( image ) ; endian = LSBEndian ; } else { HDR . nRows = ReadBlobMSBLong ( image ) ; HDR . nCols = ReadBlobMSBLong ( image ) ; HDR . imagf = ReadBlobMSBLong ( image ) ; HDR . nameLen = ReadBlobMSBLong ( image ) ; endian = MSBEndian ; } if ( ( HDR . imagf != 0 ) && ( HDR . imagf != 1 ) ) break ; if ( HDR . nameLen > 0xFFFF ) return ( DestroyImageList ( image ) ) ; for ( i = 0 ; i < ( ssize_t ) HDR . nameLen ; i ++ ) { int byte ; byte = ReadBlobByte ( image ) ; if ( byte == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } image -> columns = ( size_t ) HDR . nRows ; image -> rows = ( size_t ) HDR . nCols ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) return ( DestroyImageList ( image ) ) ; if ( image_info -> ping != MagickFalse ) { Swap ( image -> columns , image -> rows ) ; if ( HDR . imagf == 1 ) ldblk *= 2 ; SeekBlob ( image , HDR . nCols * ldblk , SEEK_CUR ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) return ( image -> previous == ( Image * ) NULL ? DestroyImageList ( image ) : image ) ; goto skip_reading_current ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; ( void ) SetImageBackgroundColor ( image , exception ) ; ( void ) SetImageColorspace ( image , GRAYColorspace , exception ) ; quantum_info = AcquireQuantumInfo ( image_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) return ( DestroyImageList ( image ) ) ; switch ( HDR . Type [ 1 ] ) { case 0 : format_type = FloatingPointQuantumFormat ; depth = 64 ; break ; case 1 : format_type = FloatingPointQuantumFormat ; depth = 32 ; break ; case 2 : format_type = UnsignedQuantumFormat ; depth = 16 ; break ; case 3 : format_type = SignedQuantumFormat ; depth = 16 ; break ; case 4 : format_type = UnsignedQuantumFormat ; depth = 8 ; break ; default : format_type = UnsignedQuantumFormat ; depth = 8 ; break ; } image -> depth = depth ; if ( HDR . Type [ 0 ] != 0 ) SetQuantumEndian ( image , quantum_info , MSBEndian ) ; status = SetQuantumFormat ( image , quantum_info , format_type ) ; status = SetQuantumDepth ( image , quantum_info , depth ) ; status = SetQuantumEndian ( image , quantum_info , endian ) ; SetQuantumScale ( quantum_info , 1.0 ) ; pixels = ( unsigned char * ) GetQuantumPixels ( quantum_info ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register Quantum * magick_restrict q ; count = ReadBlob ( image , depth / 8 * image -> columns , ( char * ) pixels ) ; if ( count == - 1 ) break ; q = QueueAuthenticPixels ( image , 0 , image -> rows - y - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; ( void ) ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , GrayQuantum , pixels , exception ) ; if ( ( HDR . Type [ 1 ] == 2 ) || ( HDR . Type [ 1 ] == 3 ) ) FixSignedValues ( image , q , ( int ) image -> columns ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( HDR . imagf == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { count = ReadBlob ( image , depth / 8 * image -> columns , ( char * ) pixels ) ; if ( count == - 1 ) break ; if ( HDR . Type [ 1 ] == 0 ) InsertComplexDoubleRow ( image , ( double * ) pixels , y , 0 , 0 , exception ) ; else InsertComplexFloatRow ( image , ( float * ) pixels , y , 0 , 0 , exception ) ; } if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; rotated_image -> colors = image -> colors ; DestroyBlob ( rotated_image ) ; rotated_image -> blob = ReferenceBlob ( image -> blob ) ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; skip_reading_current : AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; break ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( EOFBlob ( image ) ) break ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static RD_BOOL seamless_process_line ( const char * line , void * data ) { UNUSED ( data ) ; char * p , * l ; char * tok1 , * tok3 , * tok4 , * tok5 , * tok6 , * tok7 , * tok8 ; unsigned long id , flags ; char * endptr ; l = xstrdup ( line ) ; p = l ; logger ( Core , Debug , \"seamless_process_line(),<S2SV_blank>got<S2SV_blank>\\'%s\\'\" , p ) ; tok1 = seamless_get_token ( & p ) ; ( void ) seamless_get_token ( & p ) ; tok3 = seamless_get_token ( & p ) ; tok4 = seamless_get_token ( & p ) ; tok5 = seamless_get_token ( & p ) ; tok6 = seamless_get_token ( & p ) ; tok7 = seamless_get_token ( & p ) ; tok8 = seamless_get_token ( & p ) ; if ( ! strcmp ( \"CREATE\" , tok1 ) ) { unsigned long group , parent ; if ( ! tok6 ) return False ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; group = strtoul ( tok4 , & endptr , 0 ) ; if ( * endptr ) return False ; parent = strtoul ( tok5 , & endptr , 0 ) ; if ( * endptr ) return False ; flags = strtoul ( tok6 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_create_window ( id , group , parent , flags ) ; } else if ( ! strcmp ( \"DESTROY\" , tok1 ) ) { if ( ! tok4 ) return False ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; flags = strtoul ( tok4 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_destroy_window ( id , flags ) ; } else if ( ! strcmp ( \"DESTROYGRP\" , tok1 ) ) { if ( ! tok4 ) return False ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; flags = strtoul ( tok4 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_destroy_group ( id , flags ) ; } else if ( ! strcmp ( \"SETICON\" , tok1 ) ) { int chunk , width , height , len ; char byte [ 3 ] ; if ( ! tok8 ) return False ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; chunk = strtoul ( tok4 , & endptr , 0 ) ; if ( * endptr ) return False ; width = strtoul ( tok6 , & endptr , 0 ) ; if ( * endptr ) return False ; height = strtoul ( tok7 , & endptr , 0 ) ; if ( * endptr ) return False ; byte [ 2 ] = '\\\\0' ; len = 0 ; while ( * tok8 != '\\\\0' ) { byte [ 0 ] = * tok8 ; tok8 ++ ; if ( * tok8 == '\\\\0' ) return False ; byte [ 1 ] = * tok8 ; tok8 ++ ; icon_buf [ len ] = strtol ( byte , NULL , 16 ) ; len ++ ; <S2SV_StartBug> } <S2SV_EndBug> ui_seamless_seticon ( id , tok5 , width , height , chunk , icon_buf , len ) ; } else if ( ! strcmp ( \"DELICON\" , tok1 ) ) { int width , height ; if ( ! tok6 ) return False ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; width = strtoul ( tok5 , & endptr , 0 ) ; if ( * endptr ) return False ; height = strtoul ( tok6 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_delicon ( id , tok4 , width , height ) ; } else if ( ! strcmp ( \"POSITION\" , tok1 ) ) { int x , y , width , height ; if ( ! tok8 ) return False ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; x = strtol ( tok4 , & endptr , 0 ) ; if ( * endptr ) return False ; y = strtol ( tok5 , & endptr , 0 ) ; if ( * endptr ) return False ; width = strtol ( tok6 , & endptr , 0 ) ; if ( * endptr ) return False ; height = strtol ( tok7 , & endptr , 0 ) ; if ( * endptr ) return False ; flags = strtoul ( tok8 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_move_window ( id , x , y , width , height , flags ) ; } else if ( ! strcmp ( \"ZCHANGE\" , tok1 ) ) { unsigned long behind ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; behind = strtoul ( tok4 , & endptr , 0 ) ; if ( * endptr ) return False ; flags = strtoul ( tok5 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_restack_window ( id , behind , flags ) ; } else if ( ! strcmp ( \"TITLE\" , tok1 ) ) { if ( ! tok5 ) return False ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; flags = strtoul ( tok5 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_settitle ( id , tok4 , flags ) ; } else if ( ! strcmp ( \"STATE\" , tok1 ) ) { unsigned int state ; if ( ! tok5 ) return False ; id = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; state = strtoul ( tok4 , & endptr , 0 ) ; if ( * endptr ) return False ; flags = strtoul ( tok5 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_setstate ( id , state , flags ) ; } else if ( ! strcmp ( \"DEBUG\" , tok1 ) ) { logger ( Core , Debug , \"seamless_process_line(),<S2SV_blank>%s\" , line ) ; } else if ( ! strcmp ( \"SYNCBEGIN\" , tok1 ) ) { if ( ! tok3 ) return False ; flags = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_syncbegin ( flags ) ; } else if ( ! strcmp ( \"SYNCEND\" , tok1 ) ) { if ( ! tok3 ) return False ; flags = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; } else if ( ! strcmp ( \"HELLO\" , tok1 ) ) { if ( ! tok3 ) return False ; flags = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_begin ( ! ! ( flags & SEAMLESSRDP_HELLO_HIDDEN ) ) ; } else if ( ! strcmp ( \"ACK\" , tok1 ) ) { unsigned int serial ; serial = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_ack ( serial ) ; } else if ( ! strcmp ( \"HIDE\" , tok1 ) ) { if ( ! tok3 ) return False ; flags = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_hide_desktop ( ) ; } else if ( ! strcmp ( \"UNHIDE\" , tok1 ) ) { if ( ! tok3 ) return False ; flags = strtoul ( tok3 , & endptr , 0 ) ; if ( * endptr ) return False ; ui_seamless_unhide_desktop ( ) ; } xfree ( l ) ; return True ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ++ ; if ( ( size_t ) len >= sizeof ( icon_buf ) ) { logger ( Protocol , Warning , \"seamless_process_line(),<S2SV_blank>icon<S2SV_blank>data<S2SV_blank>would<S2SV_blank>overrun<S2SV_blank>icon_buf\" ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int fpAcc ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint32 bps = tif -> tif_dir . td_bitspersample / 8 ; tmsize_t wc = cc / bps ; tmsize_t count = cc ; uint8 * cp = ( uint8 * ) cp0 ; <S2SV_StartBug> uint8 * tmp = ( uint8 * ) _TIFFmalloc ( cc ) ; <S2SV_EndBug> if ( cc % ( bps * stride ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"fpAcc\" , \"%s\" , \"cc%(bps*stride))!=0\" ) ; return 0 ; } <S2SV_StartBug> if ( ! tmp ) <S2SV_EndBug> return 0 ; while ( count > stride ) { REPEAT4 ( stride , cp [ stride ] = ( unsigned char ) ( ( cp [ stride ] + cp [ 0 ] ) & 0xff ) ; cp ++ ) count -= stride ; } _TIFFmemcpy ( tmp , cp0 , cc ) ; cp = ( uint8 * ) cp0 ; for ( count = 0 ; count < wc ; count ++ ) { uint32 byte ; for ( byte = 0 ; byte < bps ; byte ++ ) { # if WORDS_BIGENDIAN cp [ bps * count + byte ] = tmp [ byte * wc + count ] ; # else cp [ bps * count + byte ] = tmp [ ( bps - byte - 1 ) * wc + count ] ; # endif } } _TIFFfree ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8 * tmp <S2SV_ModEnd> ; if ( <S2SV_ModStart> 0 ; } tmp = ( uint8 * ) _TIFFmalloc ( cc ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6547\n\n```\nCWE-200 static long __tun_chr_ioctl ( struct file * file , unsigned int cmd , unsigned long arg , int ifreq_len ) { struct tun_file * tfile = file -> private_data ; struct tun_struct * tun ; void __user * argp = ( void __user * ) arg ; struct sock_fprog fprog ; struct ifreq ifr ; int sndbuf ; int vnet_hdr_sz ; int ret ; <S2SV_StartBug> if ( cmd == TUNSETIFF || _IOC_TYPE ( cmd ) == 0x89 ) <S2SV_EndBug> if ( copy_from_user ( & ifr , argp , ifreq_len ) ) <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> if ( cmd == TUNGETFEATURES ) { return put_user ( IFF_TUN | IFF_TAP | IFF_NO_PI | IFF_ONE_QUEUE | IFF_VNET_HDR , ( unsigned int __user * ) argp ) ; } rtnl_lock ( ) ; tun = __tun_get ( tfile ) ; if ( cmd == TUNSETIFF && ! tun ) { ifr . ifr_name [ IFNAMSIZ - 1 ] = '\\\\0' ; ret = tun_set_iff ( tfile -> net , file , & ifr ) ; if ( ret ) goto unlock ; if ( copy_to_user ( argp , & ifr , ifreq_len ) ) ret = - EFAULT ; goto unlock ; } ret = - EBADFD ; if ( ! tun ) goto unlock ; tun_debug ( KERN_INFO , tun , \"tun_chr_ioctl<S2SV_blank>cmd<S2SV_blank>%d\\\\n\" , cmd ) ; ret = 0 ; switch ( cmd ) { case TUNGETIFF : ret = tun_get_iff ( current -> nsproxy -> net_ns , tun , & ifr ) ; if ( ret ) break ; if ( copy_to_user ( argp , & ifr , ifreq_len ) ) ret = - EFAULT ; break ; case TUNSETNOCSUM : tun_debug ( KERN_INFO , tun , \"ignored:<S2SV_blank>set<S2SV_blank>checksum<S2SV_blank>%s\\\\n\" , arg ? \"disabled\" : \"enabled\" ) ; break ; case TUNSETPERSIST : if ( arg ) tun -> flags |= TUN_PERSIST ; else tun -> flags &= ~ TUN_PERSIST ; tun_debug ( KERN_INFO , tun , \"persist<S2SV_blank>%s\\\\n\" , arg ? \"enabled\" : \"disabled\" ) ; break ; case TUNSETOWNER : tun -> owner = ( uid_t ) arg ; tun_debug ( KERN_INFO , tun , \"owner<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%d\\\\n\" , tun -> owner ) ; break ; case TUNSETGROUP : tun -> group = ( gid_t ) arg ; tun_debug ( KERN_INFO , tun , \"group<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%d\\\\n\" , tun -> group ) ; break ; case TUNSETLINK : if ( tun -> dev -> flags & IFF_UP ) { tun_debug ( KERN_INFO , tun , \"Linktype<S2SV_blank>set<S2SV_blank>failed<S2SV_blank>because<S2SV_blank>interface<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; ret = - EBUSY ; } else { tun -> dev -> type = ( int ) arg ; tun_debug ( KERN_INFO , tun , \"linktype<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%d\\\\n\" , tun -> dev -> type ) ; ret = 0 ; } break ; # ifdef TUN_DEBUG case TUNSETDEBUG : tun -> debug = arg ; break ; # endif case TUNSETOFFLOAD : ret = set_offload ( tun , arg ) ; break ; case TUNSETTXFILTER : ret = - EINVAL ; if ( ( tun -> flags & TUN_TYPE_MASK ) != TUN_TAP_DEV ) break ; ret = update_filter ( & tun -> txflt , ( void __user * ) arg ) ; break ; case SIOCGIFHWADDR : memcpy ( ifr . ifr_hwaddr . sa_data , tun -> dev -> dev_addr , ETH_ALEN ) ; ifr . ifr_hwaddr . sa_family = tun -> dev -> type ; if ( copy_to_user ( argp , & ifr , ifreq_len ) ) ret = - EFAULT ; break ; case SIOCSIFHWADDR : tun_debug ( KERN_DEBUG , tun , \"set<S2SV_blank>hw<S2SV_blank>address:<S2SV_blank>%pM\\\\n\" , ifr . ifr_hwaddr . sa_data ) ; ret = dev_set_mac_address ( tun -> dev , & ifr . ifr_hwaddr ) ; break ; case TUNGETSNDBUF : sndbuf = tun -> socket . sk -> sk_sndbuf ; if ( copy_to_user ( argp , & sndbuf , sizeof ( sndbuf ) ) ) ret = - EFAULT ; break ; case TUNSETSNDBUF : if ( copy_from_user ( & sndbuf , argp , sizeof ( sndbuf ) ) ) { ret = - EFAULT ; break ; } tun -> socket . sk -> sk_sndbuf = sndbuf ; break ; case TUNGETVNETHDRSZ : vnet_hdr_sz = tun -> vnet_hdr_sz ; if ( copy_to_user ( argp , & vnet_hdr_sz , sizeof ( vnet_hdr_sz ) ) ) ret = - EFAULT ; break ; case TUNSETVNETHDRSZ : if ( copy_from_user ( & vnet_hdr_sz , argp , sizeof ( vnet_hdr_sz ) ) ) { ret = - EFAULT ; break ; } if ( vnet_hdr_sz < ( int ) sizeof ( struct virtio_net_hdr ) ) { ret = - EINVAL ; break ; } tun -> vnet_hdr_sz = vnet_hdr_sz ; break ; case TUNATTACHFILTER : ret = - EINVAL ; if ( ( tun -> flags & TUN_TYPE_MASK ) != TUN_TAP_DEV ) break ; ret = - EFAULT ; if ( copy_from_user ( & fprog , argp , sizeof ( fprog ) ) ) break ; ret = sk_attach_filter ( & fprog , tun -> socket . sk ) ; break ; case TUNDETACHFILTER : ret = - EINVAL ; if ( ( tun -> flags & TUN_TYPE_MASK ) != TUN_TAP_DEV ) break ; ret = sk_detach_filter ( tun -> socket . sk ) ; break ; default : ret = - EINVAL ; break ; } unlock : rtnl_unlock ( ) ; if ( tun ) tun_put ( tun ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0x89 ) { <S2SV_ModStart> return - EFAULT ; } else memset ( & ifr , 0 , sizeof ( ifr ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6758\n\n```\nCWE-119 char * uwsgi_expand_path ( char * dir , int dir_len , char * ptr ) { <S2SV_StartBug> char src [ PATH_MAX + 1 ] ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( src , dir , dir_len ) ; <S2SV_EndBug> src [ dir_len ] = 0 ; char * dst = ptr ; if ( ! dst ) dst = uwsgi_malloc ( PATH_MAX + 1 ) ; if ( ! realpath ( src , dst ) ) { uwsgi_error_realpath ( src ) ; if ( ! ptr ) free ( dst ) ; <S2SV_StartBug> return NULL ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptr ) { if ( dir_len > PATH_MAX ) { uwsgi_log ( \"invalid<S2SV_blank>path<S2SV_blank>size:<S2SV_blank>%d<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , dir_len , PATH_MAX ) ; return NULL ; } char * src = uwsgi_concat2n ( <S2SV_ModEnd> dir , dir_len <S2SV_ModStart> dir , dir_len , \"\" , 0 ) <S2SV_ModEnd> ; char * <S2SV_ModStart> dst ) ; free ( src ) ; <S2SV_ModStart> NULL ; } free ( src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_image_md5 ( const vpx_image_t * img , const int planes [ 3 ] , MD5Context * md5 ) { int i , y ; for ( i = 0 ; i < 3 ; ++ i ) { const int plane = planes [ i ] ; const unsigned char * buf = img -> planes [ plane ] ; const int stride = img -> stride [ plane ] ; <S2SV_StartBug> const int w = vpx_img_plane_width ( img , plane ) ; <S2SV_EndBug> const int h = vpx_img_plane_height ( img , plane ) ; for ( y = 0 ; y < h ; ++ y ) { MD5Update ( md5 , buf , w ) ; buf += stride ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , plane ) * ( ( img -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? 2 : 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12819\n\n```\nCWE-416 int __mdiobus_register ( struct mii_bus * bus , struct module * owner ) { struct mdio_device * mdiodev ; int i , err ; struct gpio_desc * gpiod ; if ( NULL == bus || NULL == bus -> name || NULL == bus -> read || NULL == bus -> write ) return - EINVAL ; BUG_ON ( bus -> state != MDIOBUS_ALLOCATED && bus -> state != MDIOBUS_UNREGISTERED ) ; bus -> owner = owner ; bus -> dev . parent = bus -> parent ; bus -> dev . class = & mdio_bus_class ; bus -> dev . groups = NULL ; dev_set_name ( & bus -> dev , \"%s\" , bus -> id ) ; err = device_register ( & bus -> dev ) ; if ( err ) { pr_err ( \"mii_bus<S2SV_blank>%s<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>register\\\\n\" , bus -> id ) ; <S2SV_StartBug> put_device ( & bus -> dev ) ; <S2SV_EndBug> return - EINVAL ; } mutex_init ( & bus -> mdio_lock ) ; gpiod = devm_gpiod_get_optional ( & bus -> dev , \"reset\" , GPIOD_OUT_LOW ) ; if ( IS_ERR ( gpiod ) ) { dev_err ( & bus -> dev , \"mii_bus<S2SV_blank>%s<S2SV_blank>couldn\\'t<S2SV_blank>get<S2SV_blank>reset<S2SV_blank>GPIO\\\\n\" , bus -> id ) ; device_del ( & bus -> dev ) ; return PTR_ERR ( gpiod ) ; } else if ( gpiod ) { bus -> reset_gpiod = gpiod ; gpiod_set_value_cansleep ( gpiod , 1 ) ; udelay ( bus -> reset_delay_us ) ; gpiod_set_value_cansleep ( gpiod , 0 ) ; } if ( bus -> reset ) bus -> reset ( bus ) ; for ( i = 0 ; i < PHY_MAX_ADDR ; i ++ ) { if ( ( bus -> phy_mask & ( 1 << i ) ) == 0 ) { struct phy_device * phydev ; phydev = mdiobus_scan ( bus , i ) ; if ( IS_ERR ( phydev ) && ( PTR_ERR ( phydev ) != - ENODEV ) ) { err = PTR_ERR ( phydev ) ; goto error ; } } } mdiobus_setup_mdiodev_from_board_info ( bus , mdiobus_create_device ) ; bus -> state = MDIOBUS_REGISTERED ; pr_info ( \"%s:<S2SV_blank>probed\\\\n\" , bus -> name ) ; return 0 ; error : while ( -- i >= 0 ) { mdiodev = bus -> mdio_map [ i ] ; if ( ! mdiodev ) continue ; mdiodev -> device_remove ( mdiodev ) ; mdiodev -> device_free ( mdiodev ) ; } if ( bus -> reset_gpiod ) gpiod_set_value_cansleep ( bus -> reset_gpiod , 1 ) ; device_del ( & bus -> dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ) ; <S2SV_ModEnd> return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static INLINE void store_pred_mv ( MACROBLOCK * x , PICK_MODE_CONTEXT * ctx ) { <S2SV_StartBug> vpx_memcpy ( ctx -> pred_mv , x -> pred_mv , sizeof ( x -> pred_mv ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx ) { memcpy <S2SV_ModEnd> ( ctx ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17204\n\n```\nCWE-617 static enum ofperr parse_group_prop_ntr_selection_method ( struct ofpbuf * payload , enum ofp11_group_type group_type , enum ofp15_group_mod_command group_cmd , struct ofputil_group_props * gp ) { struct ntr_group_prop_selection_method * prop = payload -> data ; size_t fields_len , method_len ; enum ofperr error ; switch ( group_type ) { case OFPGT11_SELECT : break ; case OFPGT11_ALL : case OFPGT11_INDIRECT : case OFPGT11_FF : OFPPROP_LOG ( & bad_ofmsg_rl , false , \"ntr<S2SV_blank>selection<S2SV_blank>method<S2SV_blank>property<S2SV_blank>is<S2SV_blank>\" \"only<S2SV_blank>allowed<S2SV_blank>for<S2SV_blank>select<S2SV_blank>groups\" ) ; return OFPERR_OFPBPC_BAD_VALUE ; default : <S2SV_StartBug> OVS_NOT_REACHED ( ) ; <S2SV_EndBug> } switch ( group_cmd ) { case OFPGC15_ADD : case OFPGC15_MODIFY : case OFPGC15_ADD_OR_MOD : break ; case OFPGC15_DELETE : case OFPGC15_INSERT_BUCKET : case OFPGC15_REMOVE_BUCKET : OFPPROP_LOG ( & bad_ofmsg_rl , false , \"ntr<S2SV_blank>selection<S2SV_blank>method<S2SV_blank>property<S2SV_blank>is<S2SV_blank>\" \"only<S2SV_blank>allowed<S2SV_blank>for<S2SV_blank>add<S2SV_blank>and<S2SV_blank>delete<S2SV_blank>group<S2SV_blank>modifications\" ) ; return OFPERR_OFPBPC_BAD_VALUE ; default : <S2SV_StartBug> OVS_NOT_REACHED ( ) ; <S2SV_EndBug> } if ( payload -> size < sizeof * prop ) { OFPPROP_LOG ( & bad_ofmsg_rl , false , \"ntr<S2SV_blank>selection<S2SV_blank>method<S2SV_blank>property<S2SV_blank>\" \"length<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>not<S2SV_blank>valid\" , payload -> size ) ; return OFPERR_OFPBPC_BAD_LEN ; } method_len = strnlen ( prop -> selection_method , NTR_MAX_SELECTION_METHOD_LEN ) ; if ( method_len == NTR_MAX_SELECTION_METHOD_LEN ) { OFPPROP_LOG ( & bad_ofmsg_rl , false , \"ntr<S2SV_blank>selection<S2SV_blank>method<S2SV_blank>is<S2SV_blank>not<S2SV_blank>null<S2SV_blank>terminated\" ) ; return OFPERR_OFPBPC_BAD_VALUE ; } if ( strcmp ( \"hash\" , prop -> selection_method ) && strcmp ( \"dp_hash\" , prop -> selection_method ) ) { OFPPROP_LOG ( & bad_ofmsg_rl , false , \"ntr<S2SV_blank>selection<S2SV_blank>method<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\" , prop -> selection_method ) ; return OFPERR_OFPBPC_BAD_VALUE ; } strcpy ( gp -> selection_method , prop -> selection_method ) ; gp -> selection_method_param = ntohll ( prop -> selection_method_param ) ; ofpbuf_pull ( payload , sizeof * prop ) ; fields_len = ntohs ( prop -> length ) - sizeof * prop ; if ( fields_len && strcmp ( \"hash\" , gp -> selection_method ) ) { OFPPROP_LOG ( & bad_ofmsg_rl , false , \"ntr<S2SV_blank>selection<S2SV_blank>method<S2SV_blank>%s<S2SV_blank>\" \"does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>fields\" , gp -> selection_method ) ; return OFPERR_OFPBPC_BAD_VALUE ; } error = oxm_pull_field_array ( payload -> data , fields_len , & gp -> fields ) ; if ( error ) { OFPPROP_LOG ( & bad_ofmsg_rl , false , \"ntr<S2SV_blank>selection<S2SV_blank>method<S2SV_blank>fields<S2SV_blank>are<S2SV_blank>invalid\" ) ; return error ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; default : return OFPERR_OFPGMFC_BAD_TYPE <S2SV_ModEnd> ; } switch <S2SV_ModStart> ; default : return OFPERR_OFPGMFC_BAD_COMMAND <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3687\n\n```\nCWE-400 struct sctp_chunk * sctp_assoc_lookup_asconf_ack ( const struct sctp_association * asoc , __be32 serial ) { struct sctp_chunk * ack ; list_for_each_entry ( ack , & asoc -> asconf_ack_list , transmitted_list ) { <S2SV_StartBug> if ( ack -> subh . addip_hdr -> serial == serial ) { <S2SV_EndBug> sctp_chunk_hold ( ack ) ; return ack ; } } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( sctp_chunk_pending ( ack ) ) continue ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static struct buffer_head * ext2_xattr_cache_find ( struct inode * inode , struct ext2_xattr_header * header ) { __u32 hash = le32_to_cpu ( header -> h_hash ) ; <S2SV_StartBug> struct mb_cache_entry * ce ; <S2SV_EndBug> if ( ! header -> h_hash ) return NULL ; ea_idebug ( inode , \"looking<S2SV_blank>for<S2SV_blank>cached<S2SV_blank>blocks<S2SV_blank>[%x]\" , ( int ) hash ) ; again : <S2SV_StartBug> ce = mb_cache_entry_find_first ( ext2_xattr_cache , inode -> i_sb -> s_bdev , <S2SV_EndBug> hash ) ; while ( ce ) { struct buffer_head * bh ; if ( IS_ERR ( ce ) ) { if ( PTR_ERR ( ce ) == - EAGAIN ) goto again ; <S2SV_StartBug> break ; <S2SV_EndBug> } bh = sb_bread ( inode -> i_sb , ce -> e_block ) ; if ( ! bh ) { ext2_error ( inode -> i_sb , \"ext2_xattr_cache_find\" , \"inode<S2SV_blank>%ld:<S2SV_blank>block<S2SV_blank>%ld<S2SV_blank>read<S2SV_blank>error\" , <S2SV_StartBug> inode -> i_ino , ( unsigned long ) ce -> e_block ) ; <S2SV_EndBug> } else { lock_buffer ( bh ) ; if ( le32_to_cpu ( HDR ( bh ) -> h_refcount ) > EXT2_XATTR_REFCOUNT_MAX ) { ea_idebug ( inode , \"block<S2SV_blank>%ld<S2SV_blank>refcount<S2SV_blank>%d>%d\" , ( unsigned long ) ce -> e_block , le32_to_cpu ( HDR ( bh ) -> h_refcount ) , EXT2_XATTR_REFCOUNT_MAX ) ; } else if ( ! ext2_xattr_cmp ( header , HDR ( bh ) ) ) { ea_bdebug ( bh , \"b_count=%d\" , atomic_read ( & ( bh -> b_count ) ) ) ; <S2SV_StartBug> mb_cache_entry_release ( ce ) ; <S2SV_EndBug> return bh ; } unlock_buffer ( bh ) ; brelse ( bh ) ; } <S2SV_StartBug> ce = mb_cache_entry_find_next ( ce , inode -> i_sb -> s_bdev , hash ) ; <S2SV_EndBug> } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct mb2_cache_entry * ce ; struct mb2_cache * ext2_mb_cache = EXT2_SB ( inode -> i_sb ) -> s_mb_cache <S2SV_ModEnd> ; if ( <S2SV_ModStart> : ce = mb2_cache_entry_find_first ( ext2_mb_cache , hash ) ; while ( ce ) { struct buffer_head * bh ; bh = sb_bread ( <S2SV_ModEnd> inode -> i_sb <S2SV_ModStart> inode -> i_sb , ce -> e_block ) ; if ( ! bh ) { ext2_error ( inode -> i_sb , \"ext2_xattr_cache_find\" , \"inode<S2SV_blank>%ld:<S2SV_blank>block<S2SV_blank>%ld<S2SV_blank>read<S2SV_blank>error\" , inode -> i_ino , ( unsigned long ) ce -> e_block ) ; } else { lock_buffer ( bh ) ; if ( hlist_bl_unhashed ( & ce -> e_hash_list ) ) { mb2_cache_entry_put ( ext2_mb_cache , ce ) ; unlock_buffer ( bh ) ; brelse ( bh ) ; <S2SV_ModEnd> goto again ; <S2SV_ModStart> goto again ; } else if ( le32_to_cpu ( HDR ( bh ) -> h_refcount ) > EXT2_XATTR_REFCOUNT_MAX ) { ea_idebug ( inode , \"block<S2SV_blank>%ld<S2SV_blank>refcount<S2SV_blank>%d>%d\" , <S2SV_ModEnd> ( unsigned long <S2SV_ModStart> ce -> e_block <S2SV_ModEnd> , le32_to_cpu ( <S2SV_ModStart> ) ) ; mb2_cache_entry_touch ( ext2_mb_cache , ce ) ; mb2_cache_entry_put ( ext2_mb_cache , <S2SV_ModEnd> ce ) ; <S2SV_ModStart> } ce = mb2_cache_entry_find_next ( ext2_mb_cache , ce <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8645\n\n```\nCWE-284 static int tcp_v6_do_rcv ( struct sock * sk , struct sk_buff * skb ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct tcp_sock * tp ; struct sk_buff * opt_skb = NULL ; if ( skb -> protocol == htons ( ETH_P_IP ) ) return tcp_v4_do_rcv ( sk , skb ) ; <S2SV_StartBug> if ( sk_filter ( sk , skb ) ) <S2SV_EndBug> goto discard ; if ( np -> rxopt . all ) opt_skb = skb_clone ( skb , sk_gfp_mask ( sk , GFP_ATOMIC ) ) ; if ( sk -> sk_state == TCP_ESTABLISHED ) { struct dst_entry * dst = sk -> sk_rx_dst ; sock_rps_save_rxhash ( sk , skb ) ; sk_mark_napi_id ( sk , skb ) ; if ( dst ) { if ( inet_sk ( sk ) -> rx_dst_ifindex != skb -> skb_iif || dst -> ops -> check ( dst , np -> rx_dst_cookie ) == NULL ) { dst_release ( dst ) ; sk -> sk_rx_dst = NULL ; } } tcp_rcv_established ( sk , skb , tcp_hdr ( skb ) , skb -> len ) ; if ( opt_skb ) goto ipv6_pktoptions ; return 0 ; } if ( tcp_checksum_complete ( skb ) ) goto csum_err ; if ( sk -> sk_state == TCP_LISTEN ) { struct sock * nsk = tcp_v6_cookie_check ( sk , skb ) ; if ( ! nsk ) goto discard ; if ( nsk != sk ) { sock_rps_save_rxhash ( nsk , skb ) ; sk_mark_napi_id ( nsk , skb ) ; if ( tcp_child_process ( sk , nsk , skb ) ) goto reset ; if ( opt_skb ) __kfree_skb ( opt_skb ) ; return 0 ; } } else sock_rps_save_rxhash ( sk , skb ) ; if ( tcp_rcv_state_process ( sk , skb ) ) goto reset ; if ( opt_skb ) goto ipv6_pktoptions ; return 0 ; reset : tcp_v6_send_reset ( sk , skb ) ; discard : if ( opt_skb ) __kfree_skb ( opt_skb ) ; kfree_skb ( skb ) ; return 0 ; csum_err : TCP_INC_STATS ( sock_net ( sk ) , TCP_MIB_CSUMERRORS ) ; TCP_INC_STATS ( sock_net ( sk ) , TCP_MIB_INERRS ) ; goto discard ; ipv6_pktoptions : tp = tcp_sk ( sk ) ; if ( TCP_SKB_CB ( opt_skb ) -> end_seq == tp -> rcv_nxt && ! ( ( 1 << sk -> sk_state ) & ( TCPF_CLOSE | TCPF_LISTEN ) ) ) { if ( np -> rxopt . bits . rxinfo || np -> rxopt . bits . rxoinfo ) np -> mcast_oif = tcp_v6_iif ( opt_skb ) ; if ( np -> rxopt . bits . rxhlim || np -> rxopt . bits . rxohlim ) np -> mcast_hops = ipv6_hdr ( opt_skb ) -> hop_limit ; if ( np -> rxopt . bits . rxflow || np -> rxopt . bits . rxtclass ) np -> rcv_flowinfo = ip6_flowinfo ( ipv6_hdr ( opt_skb ) ) ; if ( np -> repflow ) np -> flow_label = ip6_flowlabel ( ipv6_hdr ( opt_skb ) ) ; if ( ipv6_opt_accepted ( sk , opt_skb , & TCP_SKB_CB ( opt_skb ) -> header . h6 ) ) { skb_set_owner_r ( opt_skb , sk ) ; tcp_v6_restore_cb ( opt_skb ) ; opt_skb = xchg ( & np -> pktoptions , opt_skb ) ; } else { __kfree_skb ( opt_skb ) ; opt_skb = xchg ( & np -> pktoptions , NULL ) ; } } kfree_skb ( opt_skb ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( tcp_filter <S2SV_ModEnd> ( sk ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_encode_sb ( MACROBLOCK * x , BLOCK_SIZE bsize ) { MACROBLOCKD * const xd = & x -> e_mbd ; struct optimize_ctx ctx ; MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; struct encode_b_args arg = { x , & ctx , & mbmi -> skip } ; int plane ; <S2SV_StartBug> for ( plane = 0 ; plane < MAX_MB_PLANE ; ++ plane ) { <S2SV_EndBug> if ( ! x -> skip_recode ) vp9_subtract_plane ( x , bsize , plane ) ; if ( x -> optimize && ( ! x -> skip_recode || ! x -> skip_optimize ) ) { const struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; <S2SV_StartBug> const TX_SIZE tx_size = plane ? get_uv_tx_size ( mbmi ) : mbmi -> tx_size ; <S2SV_EndBug> vp9_get_entropy_contexts ( bsize , tx_size , pd , ctx . ta [ plane ] , ctx . tl [ plane ] ) ; } vp9_foreach_transformed_block_in_plane ( xd , bsize , plane , encode_block , & arg ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int plane ; mbmi -> skip = 1 ; if ( x -> skip ) return ; <S2SV_ModStart> get_uv_tx_size ( mbmi , pd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11072\n\n```\nCWE-190 static int burl_normalize_2F_to_slash_fix ( buffer * b , int qs , int i ) { char * const s = b -> ptr ; const int blen = ( int ) buffer_string_length ( b ) ; const int used = qs < 0 ? blen : qs ; int j = i ; for ( ; i < used ; ++ i , ++ j ) { s [ j ] = s [ i ] ; if ( s [ i ] == '%' && s [ i + 1 ] == '2' && s [ i + 2 ] == 'F' ) { s [ j ] = '/' ; i += 2 ; } } if ( qs >= 0 ) { <S2SV_StartBug> memmove ( s + j , s + qs , blen - qs ) ; <S2SV_EndBug> <S2SV_StartBug> j += blen - qs ; <S2SV_EndBug> } buffer_string_set_length ( b , j ) ; return qs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { const int qslen = blen - qs ; <S2SV_ModStart> + qs , ( size_t ) qslen ) ; qs = j <S2SV_ModEnd> ; j += <S2SV_ModStart> ; j += qslen <S2SV_ModEnd> ; } buffer_string_set_length\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 int sc_file_set_sec_attr ( sc_file_t * file , const u8 * sec_attr , size_t sec_attr_len ) { u8 * tmp ; if ( ! sc_file_valid ( file ) ) { return SC_ERROR_INVALID_ARGUMENTS ; } <S2SV_StartBug> if ( sec_attr == NULL ) { <S2SV_EndBug> if ( file -> sec_attr != NULL ) free ( file -> sec_attr ) ; file -> sec_attr = NULL ; file -> sec_attr_len = 0 ; return 0 ; } tmp = ( u8 * ) realloc ( file -> sec_attr , sec_attr_len ) ; if ( ! tmp ) { if ( file -> sec_attr ) free ( file -> sec_attr ) ; file -> sec_attr = NULL ; file -> sec_attr_len = 0 ; return SC_ERROR_OUT_OF_MEMORY ; } file -> sec_attr = tmp ; memcpy ( file -> sec_attr , sec_attr , sec_attr_len ) ; file -> sec_attr_len = sec_attr_len ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sec_attr == NULL || sec_attr_len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9578\n\n```\nCWE-908 static int init_device ( u2fh_devs * devs , struct u2fdevice * dev ) { unsigned char resp [ 1024 ] ; unsigned char nonce [ 8 ] ; if ( obtain_nonce ( nonce ) != 0 ) { return U2FH_TRANSPORT_ERROR ; } size_t resplen = sizeof ( resp ) ; dev -> cid = CID_BROADCAST ; if ( u2fh_sendrecv ( devs , dev -> id , U2FHID_INIT , nonce , sizeof ( nonce ) , resp , & resplen ) == U2FH_OK ) { <S2SV_StartBug> U2FHID_INIT_RESP initresp ; <S2SV_EndBug> <S2SV_StartBug> if ( resplen > sizeof ( initresp ) ) <S2SV_EndBug> { return U2FH_MEMORY_ERROR ; } memcpy ( & initresp , resp , resplen ) ; <S2SV_StartBug> dev -> cid = initresp . cid ; <S2SV_EndBug> <S2SV_StartBug> dev -> versionInterface = initresp . versionInterface ; <S2SV_EndBug> <S2SV_StartBug> dev -> versionMajor = initresp . versionMajor ; <S2SV_EndBug> <S2SV_StartBug> dev -> versionMinor = initresp . versionMinor ; <S2SV_EndBug> <S2SV_StartBug> dev -> capFlags = initresp . capFlags ; <S2SV_EndBug> } else { return U2FH_TRANSPORT_ERROR ; } return U2FH_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> U2FH_OK ) { int offs = sizeof ( nonce ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> if ( resplen < 17 ) { return U2FH_SIZE_ERROR ; } if ( memcmp ( nonce , resp , sizeof ( nonce ) ) != 0 ) { return U2FH_TRANSPORT_ERROR ; } <S2SV_ModEnd> dev -> cid <S2SV_ModStart> -> cid = resp [ offs ] << 24 | resp [ offs + 1 ] << 16 | resp [ offs + 2 ] << 8 | resp [ offs + 3 ] ; offs += 4 <S2SV_ModEnd> ; dev -> <S2SV_ModStart> -> versionInterface = resp [ offs ++ ] <S2SV_ModEnd> ; dev -> <S2SV_ModStart> -> versionMajor = resp [ offs ++ ] <S2SV_ModEnd> ; dev -> <S2SV_ModStart> -> versionMinor = resp [ offs ++ ] ; dev -> versionBuild = resp [ offs ++ ] <S2SV_ModEnd> ; dev -> <S2SV_ModStart> -> capFlags = resp [ offs ++ ] <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1792\n\n```\nCWE-399 static void do_free_upto ( BIO * f , BIO * upto ) { if ( upto ) { BIO * tbio ; do { tbio = BIO_pop ( f ) ; BIO_free ( f ) ; f = tbio ; } <S2SV_StartBug> while ( f != upto ) ; <S2SV_EndBug> } else BIO_free_all ( f ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( f && f\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0250\n\n```\nCWE-000 static int init_nss_hash ( struct crypto_instance * instance ) { PK11SlotInfo * hash_slot = NULL ; SECItem hash_param ; if ( ! hash_to_nss [ instance -> crypto_hash_type ] ) { return 0 ; } hash_param . type = siBuffer ; <S2SV_StartBug> hash_param . data = 0 ; <S2SV_EndBug> <S2SV_StartBug> hash_param . len = 0 ; <S2SV_EndBug> hash_slot = PK11_GetBestSlot ( hash_to_nss [ instance -> crypto_hash_type ] , NULL ) ; if ( hash_slot == NULL ) { log_printf ( instance -> log_level_security , \"Unable<S2SV_blank>to<S2SV_blank>find<S2SV_blank>security<S2SV_blank>slot<S2SV_blank>(err<S2SV_blank>%d)\" , PR_GetError ( ) ) ; return - 1 ; } instance -> nss_sym_key_sign = PK11_ImportSymKey ( hash_slot , hash_to_nss [ instance -> crypto_hash_type ] , PK11_OriginUnwrap , CKA_SIGN , & hash_param , NULL ) ; if ( instance -> nss_sym_key_sign == NULL ) { log_printf ( instance -> log_level_security , \"Failure<S2SV_blank>to<S2SV_blank>import<S2SV_blank>key<S2SV_blank>into<S2SV_blank>NSS<S2SV_blank>(err<S2SV_blank>%d)\" , PR_GetError ( ) ) ; return - 1 ; } PK11_FreeSlot ( hash_slot ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . data = instance -> private_key <S2SV_ModEnd> ; hash_param . <S2SV_ModStart> . len = instance -> private_key_len <S2SV_ModEnd> ; hash_slot =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int em_ret ( struct x86_emulate_ctxt * ctxt ) { <S2SV_StartBug> ctxt -> dst . type = OP_REG ; <S2SV_EndBug> ctxt -> dst . addr . reg = & ctxt -> _eip ; <S2SV_StartBug> ctxt -> dst . bytes = ctxt -> op_bytes ; <S2SV_EndBug> return em_pop ( ctxt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt ) { int rc ; unsigned long eip ; rc = emulate_pop ( ctxt , & eip , <S2SV_ModEnd> ctxt -> op_bytes <S2SV_ModStart> ctxt -> op_bytes ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; return assign_eip_near ( ctxt , eip <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * set_string_2_svc ( sstring_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_MODIFY , arg -> princ , NULL ) ) { ret . code = KADM5_AUTH_MODIFY ; log_unauth ( \"kadm5_mod_strings\" , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_set_string ( ( void * ) handle , arg -> princ , arg -> key , arg -> value ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_mod_strings\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_StartBug> exit_func : <S2SV_EndBug> free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : <S2SV_ModStart> service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9529\n\n```\nCWE-362 static noinline void key_gc_unused_keys ( struct list_head * keys ) { while ( ! list_empty ( keys ) ) { struct key * key = list_entry ( keys -> next , struct key , graveyard_link ) ; list_del ( & key -> graveyard_link ) ; kdebug ( \"-<S2SV_blank>%u\" , key -> serial ) ; key_check ( key ) ; security_key_free ( key ) ; if ( test_bit ( KEY_FLAG_IN_QUOTA , & key -> flags ) ) { spin_lock ( & key -> user -> lock ) ; key -> user -> qnkeys -- ; key -> user -> qnbytes -= key -> quotalen ; spin_unlock ( & key -> user -> lock ) ; } atomic_dec ( & key -> user -> nkeys ) ; if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) atomic_dec ( & key -> user -> nikeys ) ; <S2SV_StartBug> key_user_put ( key -> user ) ; <S2SV_EndBug> if ( key -> type -> destroy ) key -> type -> destroy ( key ) ; kfree ( key -> description ) ; # ifdef KEY_DEBUGGING key -> magic = KEY_DEBUG_MAGIC_X ; # endif kmem_cache_free ( key_jar , key ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nikeys ) ; if ( key -> type -> destroy ) key -> type -> destroy ( key ) ; <S2SV_ModStart> key -> user <S2SV_ModEnd> ) ; kfree\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7501\n\n```\nCWE-59 <S2SV_StartBug> static int expandRegular ( rpmfi fi , const char * dest , rpmpsm psm , int nodigest , int nocontent ) <S2SV_EndBug> { FD_t wfd = NULL ; int rc = 0 ; { mode_t old_umask = umask ( 0577 ) ; <S2SV_StartBug> wfd = Fopen ( dest , \"w.ufdio\" ) ; <S2SV_EndBug> <S2SV_StartBug> umask ( old_umask ) ; <S2SV_EndBug> } if ( Ferror ( wfd ) ) { rc = RPMERR_OPEN_FAILED ; goto exit ; } if ( ! nocontent ) rc = rpmfiArchiveReadToFilePsm ( fi , wfd , nodigest , psm ) ; exit : if ( wfd ) { int myerrno = errno ; Fclose ( wfd ) ; errno = myerrno ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , rpmpsm psm , int exclusive <S2SV_ModStart> ( dest , exclusive ? \"wx.ufdio\" : \"a.ufdio\" <S2SV_ModEnd> ) ; umask <S2SV_ModStart> old_umask ) ; if ( ! exclusive && wfd != NULL && ! linkSane ( wfd , dest ) ) { rc = RPMERR_OPEN_FAILED ; goto exit ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31254\n\n```\nCWE-787 GF_Err tenc_box_read ( GF_Box * s , GF_BitStream * bs ) { u8 iv_size ; GF_TrackEncryptionBox * ptr = ( GF_TrackEncryptionBox * ) s ; ISOM_DECREASE_SIZE ( ptr , 3 ) ; gf_bs_read_u8 ( bs ) ; if ( ! ptr -> version ) { gf_bs_read_u8 ( bs ) ; } else { ptr -> crypt_byte_block = gf_bs_read_int ( bs , 4 ) ; ptr -> skip_byte_block = gf_bs_read_int ( bs , 4 ) ; } ptr -> isProtected = gf_bs_read_u8 ( bs ) ; ISOM_DECREASE_SIZE ( ptr , 17 ) ; ptr -> key_info [ 0 ] = 0 ; ptr -> key_info [ 1 ] = 0 ; ptr -> key_info [ 2 ] = 0 ; ptr -> key_info [ 3 ] = iv_size = gf_bs_read_u8 ( bs ) ; gf_bs_read_data ( bs , ptr -> key_info + 4 , 16 ) ; if ( ! iv_size && ptr -> isProtected ) { ISOM_DECREASE_SIZE ( ptr , 1 ) ; iv_size = ptr -> key_info [ 20 ] = gf_bs_read_u8 ( bs ) ; ISOM_DECREASE_SIZE ( ptr , ptr -> key_info [ 20 ] ) ; <S2SV_StartBug> gf_bs_read_data ( bs , ptr -> key_info + 21 , iv_size ) ; <S2SV_EndBug> } <S2SV_StartBug> return GF_OK ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; if ( ( iv_size != 8 ) && ( iv_size != 16 ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>Invalid<S2SV_blank>constant<S2SV_blank>IV<S2SV_blank>size<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>8<S2SV_blank>or<S2SV_blank>16\\\\n\" , ( u32 ) iv_size ) ) ; ptr -> key_info [ 20 ] = 16 ; return GF_NON_COMPLIANT_BITSTREAM ; } <S2SV_ModStart> ) ; } else if ( ( iv_size != 0 ) && ( iv_size != 8 ) && ( iv_size != 16 ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>Invalid<S2SV_blank>IV<S2SV_blank>size<S2SV_blank>%d,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>0,<S2SV_blank>8<S2SV_blank>or<S2SV_blank>16\\\\n\" , ( u32 ) iv_size ) ) ; return GF_NON_COMPLIANT_BITSTREAM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 <S2SV_StartBug> int rose_parse_facilities ( unsigned char * p , <S2SV_EndBug> struct rose_facilities_struct * facilities ) { int facilities_len , len ; facilities_len = * p ++ ; <S2SV_StartBug> if ( facilities_len == 0 ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> while ( facilities_len > 0 ) { <S2SV_EndBug> if ( * p == 0x00 ) { facilities_len -- ; p ++ ; switch ( * p ) { case FAC_NATIONAL : len = rose_parse_national ( p + 1 , facilities , facilities_len - 1 ) ; <S2SV_StartBug> if ( len < 0 ) <S2SV_EndBug> return 0 ; facilities_len -= len + 1 ; p += len + 1 ; break ; case FAC_CCITT : len = rose_parse_ccitt ( p + 1 , facilities , facilities_len - 1 ) ; <S2SV_StartBug> if ( len < 0 ) <S2SV_EndBug> return 0 ; facilities_len -= len + 1 ; p += len + 1 ; <S2SV_StartBug> break ; <S2SV_EndBug> default : printk ( KERN_DEBUG \"ROSE:<S2SV_blank>rose_parse_facilities<S2SV_blank>-<S2SV_blank>unknown<S2SV_blank>facilities<S2SV_blank>family<S2SV_blank>%02X\\\\n\" , * p ) ; facilities_len -- ; p ++ ; break ; } } else break ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * p , unsigned packet_len <S2SV_ModStart> facilities_len == 0 || ( unsigned ) facilities_len > packet_len <S2SV_ModStart> while ( facilities_len >= 3 && <S2SV_ModEnd> * p == <S2SV_ModStart> 1 ) ; <S2SV_ModEnd> break ; case <S2SV_ModStart> 1 ) ; break ; default : printk ( KERN_DEBUG \"ROSE:<S2SV_blank>rose_parse_facilities<S2SV_blank>-<S2SV_blank>unknown<S2SV_blank>facilities<S2SV_blank>family<S2SV_blank>%02X\\\\n\" , * p ) ; len = 1 ; break ; } <S2SV_ModStart> len < 0 ) return 0 ; if ( WARN_ON ( len >= facilities_len ) <S2SV_ModStart> + 1 ; } return facilities_len == 0 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5375\n\n```\nCWE-310 int btrfs_add_link ( struct btrfs_trans_handle * trans , struct inode * parent_inode , struct inode * inode , const char * name , int name_len , int add_backref , u64 index ) { int ret = 0 ; struct btrfs_key key ; struct btrfs_root * root = BTRFS_I ( parent_inode ) -> root ; u64 ino = btrfs_ino ( inode ) ; u64 parent_ino = btrfs_ino ( parent_inode ) ; if ( unlikely ( ino == BTRFS_FIRST_FREE_OBJECTID ) ) { memcpy ( & key , & BTRFS_I ( inode ) -> root -> root_key , sizeof ( key ) ) ; } else { key . objectid = ino ; btrfs_set_key_type ( & key , BTRFS_INODE_ITEM_KEY ) ; key . offset = 0 ; } if ( unlikely ( ino == BTRFS_FIRST_FREE_OBJECTID ) ) { ret = btrfs_add_root_ref ( trans , root -> fs_info -> tree_root , key . objectid , root -> root_key . objectid , parent_ino , index , name , name_len ) ; } else if ( add_backref ) { ret = btrfs_insert_inode_ref ( trans , root , name , name_len , ino , parent_ino , index ) ; } if ( ret ) return ret ; ret = btrfs_insert_dir_item ( trans , root , name , name_len , parent_inode , & key , btrfs_inode_type ( inode ) , index ) ; <S2SV_StartBug> if ( ret == - EEXIST ) <S2SV_EndBug> goto fail_dir_item ; else if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; return ret ; } btrfs_i_size_write ( parent_inode , parent_inode -> i_size + name_len * 2 ) ; inode_inc_iversion ( parent_inode ) ; parent_inode -> i_mtime = parent_inode -> i_ctime = CURRENT_TIME ; ret = btrfs_update_inode ( trans , root , parent_inode ) ; if ( ret ) btrfs_abort_transaction ( trans , root , ret ) ; return ret ; fail_dir_item : if ( unlikely ( ino == BTRFS_FIRST_FREE_OBJECTID ) ) { u64 local_index ; int err ; err = btrfs_del_root_ref ( trans , root -> fs_info -> tree_root , key . objectid , root -> root_key . objectid , parent_ino , & local_index , name , name_len ) ; } else if ( add_backref ) { u64 local_index ; int err ; err = btrfs_del_inode_ref ( trans , root , name , name_len , ino , parent_ino , & local_index ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == - EEXIST || ret == - EOVERFLOW\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0835\n\n```\nCWE-119 WORD32 impeg2d_get_slice_pos ( dec_state_multi_core_t * ps_dec_state_multi_core ) { WORD32 u4_bits ; WORD32 i4_row ; dec_state_t * ps_dec = ps_dec_state_multi_core -> ps_dec_state [ 0 ] ; WORD32 i4_prev_row ; stream_t s_bitstrm ; WORD32 i4_start_row ; WORD32 i4_slice_bistream_ofst ; WORD32 i ; s_bitstrm = ps_dec -> s_bit_stream ; i4_prev_row = - 1 ; ps_dec_state_multi_core -> ps_dec_state [ 0 ] -> i4_start_mb_y = 0 ; ps_dec_state_multi_core -> ps_dec_state [ 1 ] -> i4_start_mb_y = - 1 ; ps_dec_state_multi_core -> ps_dec_state [ 2 ] -> i4_start_mb_y = - 1 ; ps_dec_state_multi_core -> ps_dec_state [ 3 ] -> i4_start_mb_y = - 1 ; ps_dec_state_multi_core -> ps_dec_state [ 0 ] -> i4_end_mb_y = ps_dec -> u2_num_vert_mb ; ps_dec_state_multi_core -> ps_dec_state [ 1 ] -> i4_end_mb_y = - 1 ; ps_dec_state_multi_core -> ps_dec_state [ 2 ] -> i4_end_mb_y = - 1 ; ps_dec_state_multi_core -> ps_dec_state [ 3 ] -> i4_end_mb_y = - 1 ; if ( ps_dec -> i4_num_cores == 1 ) return 0 ; impeg2_jobq_reset ( ( jobq_t * ) ps_dec -> pv_jobq ) ; i4_start_row = - 1 ; i4_slice_bistream_ofst = 0 ; while ( 1 ) { WORD32 i4_is_slice ; if ( s_bitstrm . u4_offset + START_CODE_LEN >= s_bitstrm . u4_max_offset ) { break ; } u4_bits = impeg2d_bit_stream_nxt ( & s_bitstrm , START_CODE_LEN ) ; i4_row = u4_bits & 0xFF ; i4_is_slice = ( ( ( u4_bits >> 8 ) == 0x01 ) && ( i4_row ) && ( i4_row <= ps_dec -> u2_num_vert_mb ) ) ; if ( ! i4_is_slice ) break ; i4_row -= 1 ; <S2SV_StartBug> if ( i4_prev_row != i4_row ) <S2SV_EndBug> { if ( i4_start_row != - 1 ) { job_t s_job ; IV_API_CALL_STATUS_T ret ; s_job . i2_start_mb_y = i4_start_row ; s_job . i2_end_mb_y = i4_row ; s_job . i4_cmd = CMD_PROCESS ; s_job . i4_bistream_ofst = i4_slice_bistream_ofst ; ret = impeg2_jobq_queue ( ps_dec -> pv_jobq , & s_job , sizeof ( s_job ) , 1 , 0 ) ; if ( ret != IV_SUCCESS ) return ret ; } i4_slice_bistream_ofst = s_bitstrm . u4_offset >> 3 ; i4_slice_bistream_ofst -= ( size_t ) s_bitstrm . pv_bs_buf & 3 ; i4_prev_row = i4_row ; i4_start_row = i4_row ; <S2SV_StartBug> } <S2SV_EndBug> impeg2d_bit_stream_flush ( & s_bitstrm , START_CODE_LEN ) ; while ( impeg2d_bit_stream_nxt ( & s_bitstrm , 24 ) != START_CODE_PREFIX ) { impeg2d_bit_stream_get ( & s_bitstrm , 8 ) ; if ( s_bitstrm . u4_offset >= s_bitstrm . u4_max_offset ) { break ; } } } { job_t s_job ; IV_API_CALL_STATUS_T e_ret ; s_job . i2_start_mb_y = i4_start_row ; s_job . i2_end_mb_y = ps_dec -> u2_num_vert_mb ; s_job . i4_cmd = CMD_PROCESS ; s_job . i4_bistream_ofst = i4_slice_bistream_ofst ; e_ret = impeg2_jobq_queue ( ps_dec -> pv_jobq , & s_job , sizeof ( s_job ) , 1 , 0 ) ; if ( e_ret != IV_SUCCESS ) return e_ret ; } if ( ( NULL != ps_dec -> ps_disp_pic ) && ( ( 0 == ps_dec -> u4_share_disp_buf ) || ( IV_YUV_420P != ps_dec -> i4_chromaFormat ) ) ) { for ( i = 0 ; i < ps_dec -> u2_vertical_size ; i += 64 ) { job_t s_job ; IV_API_CALL_STATUS_T ret ; s_job . i2_start_mb_y = i ; s_job . i2_start_mb_y >>= 4 ; s_job . i2_end_mb_y = ( i + 64 ) ; s_job . i2_end_mb_y >>= 4 ; s_job . i4_cmd = CMD_FMTCONV ; s_job . i4_bistream_ofst = 0 ; ret = impeg2_jobq_queue ( ps_dec -> pv_jobq , & s_job , sizeof ( s_job ) , 1 , 0 ) ; if ( ret != IV_SUCCESS ) return ret ; } } impeg2_jobq_terminate ( ps_dec -> pv_jobq ) ; ps_dec -> i4_bytes_consumed = s_bitstrm . u4_offset >> 3 ; ps_dec -> i4_bytes_consumed -= ( ( size_t ) s_bitstrm . pv_bs_buf & 3 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( i4_prev_row < <S2SV_ModEnd> i4_row ) { <S2SV_ModStart> i4_row ; } else if ( i4_prev_row > i4_row ) { android_errorWriteLog ( 0x534e4554 , \"26070014\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t tcpCheckSeqNum ( Socket * socket , TcpHeader * segment , size_t length ) { bool_t acceptable = FALSE ; if ( ! length && ! socket -> rcvWnd ) { if ( segment -> seqNum == socket -> rcvNxt ) { acceptable = TRUE ; } } else if ( ! length && socket -> rcvWnd ) { if ( TCP_CMP_SEQ ( segment -> seqNum , socket -> rcvNxt ) >= 0 && TCP_CMP_SEQ ( segment -> seqNum , socket -> rcvNxt + socket -> rcvWnd ) < 0 ) { acceptable = TRUE ; } } else if ( length && socket -> rcvWnd ) { if ( TCP_CMP_SEQ ( segment -> seqNum , socket -> rcvNxt ) >= 0 && TCP_CMP_SEQ ( segment -> seqNum , socket -> rcvNxt + socket -> rcvWnd ) < 0 ) { acceptable = TRUE ; } else if ( TCP_CMP_SEQ ( segment -> seqNum + length - 1 , socket -> rcvNxt ) >= 0 && TCP_CMP_SEQ ( segment -> seqNum + length - 1 , socket -> rcvNxt + socket -> rcvWnd ) < 0 ) { acceptable = TRUE ; } } if ( ! acceptable ) { TRACE_WARNING ( \"Sequence<S2SV_blank>number<S2SV_blank>is<S2SV_blank>not<S2SV_blank>acceptable!\\\\r\\\\n\" ) ; if ( ! ( segment -> flags & TCP_FLAG_RST ) ) <S2SV_StartBug> tcpSendSegment ( socket , TCP_FLAG_ACK , socket -> sndNxt , socket -> rcvNxt , 0 , FALSE ) ; <S2SV_EndBug> return ERROR_FAILURE ; } return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TCP_FLAG_RST ) ) { <S2SV_ModStart> FALSE ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int y4m_write_file_header ( char * buf , size_t len , int width , int height , const struct VpxRational * framerate , <S2SV_StartBug> vpx_img_fmt_t fmt ) { <S2SV_EndBug> <S2SV_StartBug> const char * const color = fmt == VPX_IMG_FMT_444A ? \"C444alpha\\\\n\" : <S2SV_EndBug> fmt == VPX_IMG_FMT_I444 ? \"C444\\\\n\" : fmt == VPX_IMG_FMT_I422 ? \"C422\\\\n\" : <S2SV_StartBug> \"C420jpeg\\\\n\" ; <S2SV_EndBug> return snprintf ( buf , len , \"YUV4MPEG2<S2SV_blank>W%u<S2SV_blank>H%u<S2SV_blank>F%u:%u<S2SV_blank>I%c<S2SV_blank>%s\" , width , height , framerate -> numerator , framerate -> denominator , 'p' , color ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , vpx_img_fmt_t fmt , unsigned int bit_depth <S2SV_ModStart> const char * color ; switch ( bit_depth ) { case 8 : <S2SV_ModEnd> color = fmt <S2SV_ModStart> : \"C420jpeg\\\\n\" ; break ; case 9 : color = fmt == VPX_IMG_FMT_I44416 ? \"C444p9<S2SV_blank>XYSCSS=444P9\\\\n\" : fmt == VPX_IMG_FMT_I42216 ? \"C422p9<S2SV_blank>XYSCSS=422P9\\\\n\" : \"C420p9<S2SV_blank>XYSCSS=420P9\\\\n\" ; break ; case 10 : color = fmt == VPX_IMG_FMT_I44416 ? \"C444p10<S2SV_blank>XYSCSS=444P10\\\\n\" : fmt == VPX_IMG_FMT_I42216 ? \"C422p10<S2SV_blank>XYSCSS=422P10\\\\n\" : \"C420p10<S2SV_blank>XYSCSS=420P10\\\\n\" ; break ; case 12 : color = fmt == VPX_IMG_FMT_I44416 ? \"C444p12<S2SV_blank>XYSCSS=444P12\\\\n\" : fmt == VPX_IMG_FMT_I42216 ? \"C422p12<S2SV_blank>XYSCSS=422P12\\\\n\" : \"C420p12<S2SV_blank>XYSCSS=420P12\\\\n\" ; break ; case 14 : color = fmt == VPX_IMG_FMT_I44416 ? \"C444p14<S2SV_blank>XYSCSS=444P14\\\\n\" : fmt == VPX_IMG_FMT_I42216 ? \"C422p14<S2SV_blank>XYSCSS=422P14\\\\n\" : \"C420p14<S2SV_blank>XYSCSS=420P14\\\\n\" ; break ; case 16 : color = fmt == VPX_IMG_FMT_I44416 ? \"C444p16<S2SV_blank>XYSCSS=444P16\\\\n\" : fmt == VPX_IMG_FMT_I42216 ? \"C422p16<S2SV_blank>XYSCSS=422P16\\\\n\" : \"C420p16<S2SV_blank>XYSCSS=420P16\\\\n\" ; break ; default : color = NULL ; assert ( 0 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static struct page * alloc_huge_page ( struct vm_area_struct * vma , unsigned long addr , int avoid_reserve ) { <S2SV_StartBug> struct hstate * h = hstate_vma ( vma ) ; <S2SV_EndBug> <S2SV_StartBug> struct page * page ; <S2SV_EndBug> struct address_space * mapping = vma -> vm_file -> f_mapping ; struct inode * inode = mapping -> host ; long chg ; chg = vma_needs_reservation ( h , vma , addr ) ; if ( chg < 0 ) return ERR_PTR ( - VM_FAULT_OOM ) ; if ( chg ) <S2SV_StartBug> if ( hugetlb_get_quota ( inode -> i_mapping , chg ) ) <S2SV_EndBug> return ERR_PTR ( - VM_FAULT_SIGBUS ) ; spin_lock ( & hugetlb_lock ) ; page = dequeue_huge_page_vma ( h , vma , addr , avoid_reserve ) ; spin_unlock ( & hugetlb_lock ) ; if ( ! page ) { page = alloc_buddy_huge_page ( h , NUMA_NO_NODE ) ; if ( ! page ) { <S2SV_StartBug> hugetlb_put_quota ( inode -> i_mapping , chg ) ; <S2SV_EndBug> return ERR_PTR ( - VM_FAULT_SIGBUS ) ; } } <S2SV_StartBug> set_page_private ( page , ( unsigned long ) mapping ) ; <S2SV_EndBug> vma_commit_reservation ( h , vma , addr ) ; return page ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct hugepage_subpool * spool = subpool_vma ( vma ) ; struct <S2SV_ModStart> page * page <S2SV_ModEnd> ; long chg <S2SV_ModStart> ) if ( hugepage_subpool_get_pages ( spool <S2SV_ModEnd> , chg ) <S2SV_ModStart> page ) { hugepage_subpool_put_pages ( spool <S2SV_ModEnd> , chg ) <S2SV_ModStart> unsigned long ) spool <S2SV_ModEnd> ) ; vma_commit_reservation\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_rc_clamp_iframe_target_size ( const VP9_COMP * const cpi , int target ) { const RATE_CONTROL * rc = & cpi -> rc ; <S2SV_StartBug> const VP9_CONFIG * oxcf = & cpi -> oxcf ; <S2SV_EndBug> if ( oxcf -> rc_max_intra_bitrate_pct ) { <S2SV_StartBug> const int max_rate = rc -> av_per_frame_bandwidth * <S2SV_EndBug> oxcf -> rc_max_intra_bitrate_pct / 100 ; target = MIN ( target , max_rate ) ; } if ( target > rc -> max_frame_bandwidth ) target = rc -> max_frame_bandwidth ; return target ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc ; const VP9EncoderConfig <S2SV_ModEnd> * oxcf = <S2SV_ModStart> = rc -> avg_frame_bandwidth <S2SV_ModEnd> * oxcf ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3525\n\n```\nCWE-20 static void _out_result ( conn_t out , nad_t nad ) { int attr ; jid_t from , to ; char * rkey ; int rkeylen ; attr = nad_find_attr ( nad , 0 , - 1 , \"from\" , NULL ) ; if ( attr < 0 || ( from = jid_new ( NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ) == NULL ) { log_debug ( ZONE , \"missing<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>from<S2SV_blank>on<S2SV_blank>db<S2SV_blank>result<S2SV_blank>packet\" ) ; nad_free ( nad ) ; return ; } attr = nad_find_attr ( nad , 0 , - 1 , \"to\" , NULL ) ; if ( attr < 0 || ( to = jid_new ( NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ) == NULL ) { log_debug ( ZONE , \"missing<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>to<S2SV_blank>on<S2SV_blank>db<S2SV_blank>result<S2SV_blank>packet\" ) ; jid_free ( from ) ; nad_free ( nad ) ; return ; } rkey = s2s_route_key ( NULL , to -> domain , from -> domain ) ; rkeylen = strlen ( rkey ) ; <S2SV_StartBug> if ( nad_find_attr ( nad , 0 , - 1 , \"type\" , \"valid\" ) >= 0 ) { <S2SV_EndBug> log_write ( out -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>outgoing<S2SV_blank>route<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>now<S2SV_blank>valid%s%s\" , out -> fd -> fd , out -> ip , out -> port , rkey , ( out -> s -> flags & SX_SSL_WRAPPER ) ? \",<S2SV_blank>TLS<S2SV_blank>negotiated\" : \"\" , out -> s -> compressed ? \",<S2SV_blank>ZLIB<S2SV_blank>compression<S2SV_blank>enabled\" : \"\" ) ; xhash_put ( out -> states , pstrdup ( xhash_pool ( out -> states ) , rkey ) , ( void * ) conn_VALID ) ; log_debug ( ZONE , \"%s<S2SV_blank>valid,<S2SV_blank>flushing<S2SV_blank>queue\" , rkey ) ; out_flush_route_queue ( out -> s2s , rkey , rkeylen ) ; free ( rkey ) ; jid_free ( from ) ; jid_free ( to ) ; nad_free ( nad ) ; return ; } log_write ( out -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>outgoing<S2SV_blank>route<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>now<S2SV_blank>invalid\" , out -> fd -> fd , out -> ip , out -> port , rkey ) ; log_write ( out -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>closing<S2SV_blank>connection\" , out -> fd -> fd , out -> ip , out -> port ) ; sx_error ( out -> s , stream_err_INVALID_ID , \"dialback<S2SV_blank>negotiation<S2SV_blank>failed\" ) ; sx_close ( out -> s ) ; out_bounce_route_queue ( out -> s2s , rkey , rkeylen , stanza_err_SERVICE_UNAVAILABLE ) ; free ( rkey ) ; jid_free ( from ) ; jid_free ( to ) ; nad_free ( nad ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) >= 0 && xhash_get ( out -> states , rkey ) == ( void * ) conn_INPROGRESS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8950\n\n```\nCWE-200 static void * __dma_alloc_coherent ( struct device * dev , size_t size , dma_addr_t * dma_handle , gfp_t flags , struct dma_attrs * attrs ) { if ( dev == NULL ) { WARN_ONCE ( 1 , \"Use<S2SV_blank>an<S2SV_blank>actual<S2SV_blank>device<S2SV_blank>structure<S2SV_blank>for<S2SV_blank>DMA<S2SV_blank>allocation\\\\n\" ) ; return NULL ; } if ( IS_ENABLED ( CONFIG_ZONE_DMA ) && dev -> coherent_dma_mask <= DMA_BIT_MASK ( 32 ) ) flags |= GFP_DMA ; if ( IS_ENABLED ( CONFIG_DMA_CMA ) && ( flags & __GFP_WAIT ) ) { struct page * page ; void * addr ; size = PAGE_ALIGN ( size ) ; page = dma_alloc_from_contiguous ( dev , size >> PAGE_SHIFT , get_order ( size ) ) ; if ( ! page ) return NULL ; * dma_handle = phys_to_dma ( dev , page_to_phys ( page ) ) ; addr = page_address ( page ) ; <S2SV_StartBug> if ( flags & __GFP_ZERO ) <S2SV_EndBug> memset ( addr , 0 , size ) ; return addr ; } else { return swiotlb_alloc_coherent ( dev , size , dma_handle , flags ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> page ) ; <S2SV_ModEnd> memset ( addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static SvcInternal * get_svc_internal ( SvcContext * svc_ctx ) { <S2SV_EndBug> if ( svc_ctx == NULL ) return NULL ; if ( svc_ctx -> internal == NULL ) { <S2SV_StartBug> SvcInternal * const si = ( SvcInternal * ) malloc ( sizeof ( * si ) ) ; <S2SV_EndBug> if ( si != NULL ) { memset ( si , 0 , sizeof ( * si ) ) ; } svc_ctx -> internal = si ; } <S2SV_StartBug> return ( SvcInternal * ) svc_ctx -> internal ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static SvcInternal_t <S2SV_ModEnd> * get_svc_internal ( <S2SV_ModStart> NULL ) { SvcInternal_t <S2SV_ModEnd> * const si <S2SV_ModStart> si = ( SvcInternal_t <S2SV_ModEnd> * ) malloc <S2SV_ModStart> } return ( SvcInternal_t <S2SV_ModEnd> * ) svc_ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15868\n\n```\nCWE-20 int bnep_add_connection ( struct bnep_connadd_req * req , struct socket * sock ) { struct net_device * dev ; struct bnep_session * s , * ss ; u8 dst [ ETH_ALEN ] , src [ ETH_ALEN ] ; int err ; BT_DBG ( \"\" ) ; <S2SV_StartBug> baswap ( ( void * ) dst , & l2cap_pi ( sock -> sk ) -> chan -> dst ) ; <S2SV_EndBug> baswap ( ( void * ) src , & l2cap_pi ( sock -> sk ) -> chan -> src ) ; dev = alloc_netdev ( sizeof ( struct bnep_session ) , ( * req -> device ) ? req -> device : \"bnep%d\" , NET_NAME_UNKNOWN , bnep_net_setup ) ; if ( ! dev ) return - ENOMEM ; down_write ( & bnep_session_sem ) ; ss = __bnep_get_session ( dst ) ; if ( ss && ss -> state == BT_CONNECTED ) { err = - EEXIST ; goto failed ; } s = netdev_priv ( dev ) ; memcpy ( s -> eh . h_dest , & src , ETH_ALEN ) ; memcpy ( s -> eh . h_source , & dst , ETH_ALEN ) ; memcpy ( dev -> dev_addr , s -> eh . h_dest , ETH_ALEN ) ; s -> dev = dev ; s -> sock = sock ; s -> role = req -> role ; s -> state = BT_CONNECTED ; s -> msg . msg_flags = MSG_NOSIGNAL ; # ifdef CONFIG_BT_BNEP_MC_FILTER set_bit ( bnep_mc_hash ( dev -> broadcast ) , ( ulong * ) & s -> mc_filter ) ; # endif # ifdef CONFIG_BT_BNEP_PROTO_FILTER bnep_set_default_proto_filter ( s ) ; # endif SET_NETDEV_DEV ( dev , bnep_get_device ( s ) ) ; SET_NETDEV_DEVTYPE ( dev , & bnep_type ) ; err = register_netdev ( dev ) ; if ( err ) goto failed ; __bnep_link_session ( s ) ; __module_get ( THIS_MODULE ) ; s -> task = kthread_run ( bnep_session , s , \"kbnepd<S2SV_blank>%s\" , dev -> name ) ; if ( IS_ERR ( s -> task ) ) { module_put ( THIS_MODULE ) ; unregister_netdev ( dev ) ; __bnep_unlink_session ( s ) ; err = PTR_ERR ( s -> task ) ; goto failed ; } up_write ( & bnep_session_sem ) ; strcpy ( req -> device , dev -> name ) ; return 0 ; failed : up_write ( & bnep_session_sem ) ; free_netdev ( dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"\" ) ; if ( ! l2cap_is_socket ( sock ) ) return - EBADFD ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11592\n\n```\nCWE-125 JsVar * jswrap_graphics_createArrayBuffer ( int width , int height , int bpp , JsVar * options ) { if ( width <= 0 || height <= 0 || width > 32767 || height > 32767 ) { jsExceptionHere ( JSET_ERROR , \"Invalid<S2SV_blank>Size\" ) ; return 0 ; } if ( ! isValidBPP ( bpp ) ) { jsExceptionHere ( JSET_ERROR , \"Invalid<S2SV_blank>BPP\" ) ; return 0 ; } JsVar * parent = jspNewObject ( 0 , \"Graphics\" ) ; if ( ! parent ) return 0 ; JsGraphics gfx ; graphicsStructInit ( & gfx ) ; gfx . data . type = JSGRAPHICSTYPE_ARRAYBUFFER ; gfx . data . flags = JSGRAPHICSFLAGS_NONE ; gfx . graphicsVar = parent ; gfx . data . width = ( unsigned short ) width ; gfx . data . height = ( unsigned short ) height ; gfx . data . bpp = ( unsigned char ) bpp ; if ( jsvIsObject ( options ) ) { if ( jsvGetBoolAndUnLock ( jsvObjectGetChild ( options , \"zigzag\" , 0 ) ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_ARRAYBUFFER_ZIGZAG ) ; if ( jsvGetBoolAndUnLock ( jsvObjectGetChild ( options , \"msb\" , 0 ) ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_ARRAYBUFFER_MSB ) ; if ( jsvGetBoolAndUnLock ( jsvObjectGetChild ( options , \"vertical_byte\" , 0 ) ) ) { if ( gfx . data . bpp == 1 ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_ARRAYBUFFER_VERTICAL_BYTE ) ; else <S2SV_StartBug> jsWarn ( \"vertical_byte<S2SV_blank>only<S2SV_blank>works<S2SV_blank>for<S2SV_blank>1bpp<S2SV_blank>ArrayBuffers\\\\n\" ) ; <S2SV_EndBug> } JsVar * colorv = jsvObjectGetChild ( options , \"color_order\" , 0 ) ; if ( colorv ) { if ( jsvIsStringEqual ( colorv , \"rgb\" ) ) ; else if ( ! jsvIsStringEqual ( colorv , \"brg\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_BRG ) ; else if ( ! jsvIsStringEqual ( colorv , \"bgr\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_BGR ) ; else if ( ! jsvIsStringEqual ( colorv , \"gbr\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_GBR ) ; else if ( ! jsvIsStringEqual ( colorv , \"grb\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_GRB ) ; else if ( ! jsvIsStringEqual ( colorv , \"rbg\" ) ) gfx . data . flags = ( JsGraphicsFlags ) ( gfx . data . flags | JSGRAPHICSFLAGS_COLOR_RBG ) ; else jsWarn ( \"color_order<S2SV_blank>must<S2SV_blank>be<S2SV_blank>3<S2SV_blank>characters\" ) ; jsvUnLock ( colorv ) ; } } lcdInit_ArrayBuffer ( & gfx ) ; graphicsSetVar ( & gfx ) ; return parent ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; else { jsExceptionHere ( JSET_ERROR , <S2SV_ModEnd> \"vertical_byte<S2SV_blank>only<S2SV_blank>works<S2SV_blank>for<S2SV_blank>1bpp<S2SV_blank>ArrayBuffers\\\\n\" ) ; <S2SV_ModStart> \"vertical_byte<S2SV_blank>only<S2SV_blank>works<S2SV_blank>for<S2SV_blank>1bpp<S2SV_blank>ArrayBuffers\\\\n\" ) ; return 0 ; } if ( gfx . data . height & 7 ) { jsExceptionHere ( JSET_ERROR , \"height<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>8<S2SV_blank>when<S2SV_blank>using<S2SV_blank>vertical_byte\\\\n\" ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3610\n\n```\nCWE-000 static int wrmsr_interception ( struct vcpu_svm * svm ) { struct msr_data msr ; u32 ecx = svm -> vcpu . arch . regs [ VCPU_REGS_RCX ] ; u64 data = ( svm -> vcpu . arch . regs [ VCPU_REGS_RAX ] & - 1u ) | ( ( u64 ) ( svm -> vcpu . arch . regs [ VCPU_REGS_RDX ] & - 1u ) << 32 ) ; msr . data = data ; msr . index = ecx ; msr . host_initiated = false ; svm -> next_rip = kvm_rip_read ( & svm -> vcpu ) + 2 ; <S2SV_StartBug> if ( svm_set_msr ( & svm -> vcpu , & msr ) ) { <S2SV_EndBug> trace_kvm_msr_write_ex ( ecx , data ) ; kvm_inject_gp ( & svm -> vcpu , 0 ) ; } else { trace_kvm_msr_write ( ecx , data ) ; skip_emulated_instruction ( & svm -> vcpu ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( kvm_set_msr <S2SV_ModEnd> ( & svm\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_prob_diff_update_savings_search ( const unsigned int * ct , <S2SV_StartBug> vp9_prob oldp , vp9_prob * bestp , <S2SV_EndBug> <S2SV_StartBug> vp9_prob upd ) { <S2SV_EndBug> const int old_b = cost_branch256 ( ct , oldp ) ; int bestsavings = 0 ; <S2SV_StartBug> vp9_prob newp , bestnewp = oldp ; <S2SV_EndBug> const int step = * bestp > oldp ? - 1 : 1 ; for ( newp = * bestp ; newp != oldp ; newp += step ) { const int new_b = cost_branch256 ( ct , newp ) ; const int update_b = prob_diff_update_cost ( newp , oldp ) + vp9_cost_upd256 ; const int savings = old_b - new_b - update_b ; if ( savings > bestsavings ) { bestsavings = savings ; bestnewp = newp ; } } * bestp = bestnewp ; return bestsavings ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ct , vpx_prob oldp , vpx_prob <S2SV_ModEnd> * bestp , <S2SV_ModStart> * bestp , vpx_prob <S2SV_ModEnd> upd ) { <S2SV_ModStart> = 0 ; vpx_prob <S2SV_ModEnd> newp , bestnewp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-682(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8326\n\n```\nCWE-682 static int find_high_bit ( unsigned int x ) { int i ; for ( i = 31 ; i >= 0 ; i -- ) { <S2SV_StartBug> if ( x & ( 1 << i ) ) return i ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x & ( 1U << ( unsigned int ) <S2SV_ModEnd> i ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11684\n\n```\nCWE-326 int secure_check ( void * data ) { const at91_secure_header_t * header ; void * file ; <S2SV_StartBug> if ( secure_decrypt ( data , sizeof ( * header ) , 0 ) ) <S2SV_EndBug> <S2SV_StartBug> return - 1 ; <S2SV_EndBug> header = ( const at91_secure_header_t * ) data ; if ( header -> magic != AT91_SECURE_MAGIC ) <S2SV_StartBug> return - 1 ; <S2SV_EndBug> file = ( unsigned char * ) data + sizeof ( * header ) ; <S2SV_StartBug> return secure_decrypt ( file , header -> file_size , 1 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * file ; int ret = - 1 ; <S2SV_ModStart> 0 ) ) goto secure_wipe_keys <S2SV_ModEnd> ; header = <S2SV_ModStart> != AT91_SECURE_MAGIC ) goto secure_wipe_keys <S2SV_ModEnd> ; file = <S2SV_ModStart> header ) ; ret = <S2SV_ModEnd> secure_decrypt ( file <S2SV_ModStart> 1 ) ; secure_wipe_keys : wipe_keys ( ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0205\n\n```\nCWE-119 static int futex_wait ( u32 __user * uaddr , int fshared , u32 val , ktime_t * abs_time , u32 bitset , int clockrt ) { struct hrtimer_sleeper timeout , * to = NULL ; struct restart_block * restart ; struct futex_hash_bucket * hb ; struct futex_q q ; int ret ; if ( ! bitset ) return - EINVAL ; q . pi_state = NULL ; q . bitset = bitset ; q . rt_waiter = NULL ; q . requeue_pi_key = NULL ; if ( abs_time ) { to = & timeout ; hrtimer_init_on_stack ( & to -> timer , clockrt ? CLOCK_REALTIME : CLOCK_MONOTONIC , HRTIMER_MODE_ABS ) ; hrtimer_init_sleeper ( to , current ) ; hrtimer_set_expires_range_ns ( & to -> timer , * abs_time , current -> timer_slack_ns ) ; } retry : ret = futex_wait_setup ( uaddr , val , fshared , & q , & hb ) ; if ( ret ) goto out ; futex_wait_queue_me ( hb , & q , to ) ; ret = 0 ; if ( ! unqueue_me ( & q ) ) <S2SV_StartBug> goto out_put_key ; <S2SV_EndBug> ret = - ETIMEDOUT ; if ( to && ! to -> task ) <S2SV_StartBug> goto out_put_key ; <S2SV_EndBug> <S2SV_StartBug> if ( ! signal_pending ( current ) ) { <S2SV_EndBug> put_futex_key ( fshared , & q . key ) ; goto retry ; <S2SV_StartBug> } <S2SV_EndBug> ret = - ERESTARTSYS ; if ( ! abs_time ) <S2SV_StartBug> goto out_put_key ; <S2SV_EndBug> restart = & current_thread_info ( ) -> restart_block ; restart -> fn = futex_wait_restart ; restart -> futex . uaddr = ( u32 * ) uaddr ; restart -> futex . val = val ; restart -> futex . time = abs_time -> tv64 ; restart -> futex . bitset = bitset ; restart -> futex . flags = FLAGS_HAS_TIMEOUT ; if ( fshared ) restart -> futex . flags |= FLAGS_SHARED ; if ( clockrt ) restart -> futex . flags |= FLAGS_CLOCKRT ; ret = - ERESTART_RESTARTBLOCK ; <S2SV_StartBug> out_put_key : <S2SV_EndBug> put_futex_key ( fshared , & q . key ) ; out : if ( to ) { hrtimer_cancel ( & to -> timer ) ; destroy_hrtimer_on_stack ( & to -> timer ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) goto out <S2SV_ModEnd> ; ret = <S2SV_ModStart> task ) goto out <S2SV_ModEnd> ; if ( <S2SV_ModStart> current ) ) <S2SV_ModEnd> goto retry ; <S2SV_ModStart> goto retry ; <S2SV_ModEnd> ret = - <S2SV_ModStart> abs_time ) goto out <S2SV_ModEnd> ; restart = <S2SV_ModStart> - ERESTART_RESTARTBLOCK ; <S2SV_ModEnd> out : if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9074\n\n```\nCWE-125 int ip6_find_1stfragopt ( struct sk_buff * skb , u8 * * nexthdr ) { <S2SV_StartBug> u16 offset = sizeof ( struct ipv6hdr ) ; <S2SV_EndBug> struct ipv6_opt_hdr * exthdr = ( struct ipv6_opt_hdr * ) ( ipv6_hdr ( skb ) + 1 ) ; unsigned int packet_len = skb_tail_pointer ( skb ) - skb_network_header ( skb ) ; int found_rhdr = 0 ; * nexthdr = & ipv6_hdr ( skb ) -> nexthdr ; <S2SV_StartBug> while ( offset + 1 <= packet_len ) { <S2SV_EndBug> <S2SV_StartBug> switch ( * * nexthdr ) { <S2SV_EndBug> case NEXTHDR_HOP : break ; case NEXTHDR_ROUTING : found_rhdr = 1 ; break ; case NEXTHDR_DEST : # if IS_ENABLED ( CONFIG_IPV6_MIP6 ) if ( ipv6_find_tlv ( skb , offset , IPV6_TLV_HAO ) >= 0 ) break ; # endif if ( found_rhdr ) return offset ; break ; default : return offset ; } <S2SV_StartBug> offset += ipv6_optlen ( exthdr ) ; <S2SV_EndBug> * nexthdr = & exthdr -> nexthdr ; <S2SV_StartBug> exthdr = ( struct ipv6_opt_hdr * ) ( skb_network_header ( skb ) + <S2SV_EndBug> offset ) ; } return offset ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( struct ipv6hdr <S2SV_ModEnd> ) ; unsigned <S2SV_ModStart> while ( offset <S2SV_ModEnd> <= packet_len ) <S2SV_ModStart> packet_len ) { struct ipv6_opt_hdr * exthdr ; <S2SV_ModStart> offset ; } if ( offset + sizeof ( struct ipv6_opt_hdr ) > packet_len ) return - EINVAL ; exthdr = ( struct ipv6_opt_hdr * ) ( skb_network_header ( skb ) + offset ) ; <S2SV_ModStart> -> nexthdr ; } return - EINVAL <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int jas_memdump ( FILE * out , void * data , size_t len ) { size_t i ; size_t j ; <S2SV_StartBug> uchar * dp ; <S2SV_EndBug> dp = data ; for ( i = 0 ; i < len ; i += 16 ) { fprintf ( out , \"%04zx:\" , i ) ; for ( j = 0 ; j < 16 ; ++ j ) { if ( i + j < len ) { fprintf ( out , \"<S2SV_blank>%02x\" , dp [ i + j ] ) ; } } fprintf ( out , \"\\\\n\" ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t j ; jas_uchar <S2SV_ModEnd> * dp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2211\n\n```\nCWE-264 SYSCALL_DEFINE4 ( osf_wait4 , pid_t , pid , int __user * , ustatus , int , options , struct rusage32 __user * , ur ) { struct rusage r ; long ret , err ; <S2SV_StartBug> mm_segment_t old_fs ; <S2SV_EndBug> if ( ! ur ) return sys_wait4 ( pid , ustatus , options , NULL ) ; old_fs = get_fs ( ) ; set_fs ( KERNEL_DS ) ; <S2SV_StartBug> ret = sys_wait4 ( pid , ustatus , options , ( struct rusage __user * ) & r ) ; <S2SV_EndBug> set_fs ( old_fs ) ; if ( ! access_ok ( VERIFY_WRITE , ur , sizeof ( * ur ) ) ) return - EFAULT ; err = 0 ; <S2SV_StartBug> err |= __put_user ( r . ru_utime . tv_sec , & ur -> ru_utime . tv_sec ) ; <S2SV_EndBug> err |= __put_user ( r . ru_utime . tv_usec , & ur -> ru_utime . tv_usec ) ; err |= __put_user ( r . ru_stime . tv_sec , & ur -> ru_stime . tv_sec ) ; err |= __put_user ( r . ru_stime . tv_usec , & ur -> ru_stime . tv_usec ) ; err |= __put_user ( r . ru_maxrss , & ur -> ru_maxrss ) ; err |= __put_user ( r . ru_ixrss , & ur -> ru_ixrss ) ; err |= __put_user ( r . ru_idrss , & ur -> ru_idrss ) ; err |= __put_user ( r . ru_isrss , & ur -> ru_isrss ) ; err |= __put_user ( r . ru_minflt , & ur -> ru_minflt ) ; err |= __put_user ( r . ru_majflt , & ur -> ru_majflt ) ; err |= __put_user ( r . ru_nswap , & ur -> ru_nswap ) ; err |= __put_user ( r . ru_inblock , & ur -> ru_inblock ) ; err |= __put_user ( r . ru_oublock , & ur -> ru_oublock ) ; err |= __put_user ( r . ru_msgsnd , & ur -> ru_msgsnd ) ; err |= __put_user ( r . ru_msgrcv , & ur -> ru_msgrcv ) ; err |= __put_user ( r . ru_nsignals , & ur -> ru_nsignals ) ; err |= __put_user ( r . ru_nvcsw , & ur -> ru_nvcsw ) ; err |= __put_user ( r . ru_nivcsw , & ur -> ru_nivcsw ) ; return err ? err : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , err ; unsigned int status = 0 ; <S2SV_ModStart> ( pid , ( unsigned int __user * ) & status <S2SV_ModEnd> , options , <S2SV_ModStart> ; err |= put_user ( status , ustatus ) ; err |=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int get_vp9_frame_buffer ( void * cb_priv , size_t min_size , <S2SV_EndBug> vpx_codec_frame_buffer_t * fb ) { int i ; struct ExternalFrameBufferList * const ext_fb_list = ( struct ExternalFrameBufferList * ) cb_priv ; if ( ext_fb_list == NULL ) return - 1 ; for ( i = 0 ; i < ext_fb_list -> num_external_frame_buffers ; ++ i ) { if ( ! ext_fb_list -> ext_fb [ i ] . in_use ) break ; } if ( i == ext_fb_list -> num_external_frame_buffers ) return - 1 ; if ( ext_fb_list -> ext_fb [ i ] . size < min_size ) { free ( ext_fb_list -> ext_fb [ i ] . data ) ; <S2SV_StartBug> ext_fb_list -> ext_fb [ i ] . data = ( uint8_t * ) malloc ( min_size ) ; <S2SV_EndBug> if ( ! ext_fb_list -> ext_fb [ i ] . data ) return - 1 ; ext_fb_list -> ext_fb [ i ] . size = min_size ; } fb -> data = ext_fb_list -> ext_fb [ i ] . data ; fb -> size = ext_fb_list -> ext_fb [ i ] . size ; ext_fb_list -> ext_fb [ i ] . in_use = 1 ; fb -> priv = & ext_fb_list -> ext_fb [ i ] ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> uint8_t * ) calloc ( min_size , sizeof ( uint8_t ) <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9907\n\n```\nCWE-20 static MagickBooleanType ReadUncompressedRGBA ( Image * image , DDSInfo * dds_info , ExceptionInfo * exception ) { PixelPacket * q ; ssize_t alphaBits , x , y ; unsigned short color ; alphaBits = 0 ; if ( dds_info -> pixelformat . rgb_bitcount == 16 ) { if ( IsBitMask ( dds_info -> pixelformat , 0x7c00 , 0x03e0 , 0x001f , 0x8000 ) ) alphaBits = 1 ; else if ( IsBitMask ( dds_info -> pixelformat , 0x00ff , 0x00ff , 0x00ff , 0xff00 ) ) { alphaBits = 2 ; ( void ) SetImageType ( image , GrayscaleMatteType ) ; } else if ( IsBitMask ( dds_info -> pixelformat , 0x0f00 , 0x00f0 , 0x000f , 0xf000 ) ) alphaBits = 4 ; else ThrowBinaryException ( CorruptImageError , \"ImageTypeNotSupported\" , image -> filename ) ; } for ( y = 0 ; y < ( ssize_t ) dds_info -> height ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , dds_info -> width , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) return MagickFalse ; for ( x = 0 ; x < ( ssize_t ) dds_info -> width ; x ++ ) { if ( dds_info -> pixelformat . rgb_bitcount == 16 ) { color = ReadBlobShort ( image ) ; if ( alphaBits == 1 ) { SetPixelAlpha ( q , ( color & ( 1 << 15 ) ) ? QuantumRange : 0 ) ; SetPixelRed ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( ( unsigned short ) ( color << 1 ) >> 11 ) / 31.0 ) * 255 ) ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( ( unsigned short ) ( color << 6 ) >> 11 ) / 31.0 ) * 255 ) ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( ( unsigned short ) ( color << 11 ) >> 11 ) / 31.0 ) * 255 ) ) ) ; } else if ( alphaBits == 2 ) { SetPixelAlpha ( q , ScaleCharToQuantum ( ( unsigned char ) ( color >> 8 ) ) ) ; SetPixelGray ( q , ScaleCharToQuantum ( ( unsigned char ) color ) ) ; } else { SetPixelAlpha ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( color >> 12 ) / 15.0 ) * 255 ) ) ) ; SetPixelRed ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( ( unsigned short ) ( color << 4 ) >> 12 ) / 15.0 ) * 255 ) ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( ( unsigned short ) ( color << 8 ) >> 12 ) / 15.0 ) * 255 ) ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( ( unsigned char ) ( ( ( ( unsigned short ) ( color << 12 ) >> 12 ) / 15.0 ) * 255 ) ) ) ; } } else { SetPixelBlue ( q , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ) ; SetPixelRed ( q , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ) ; SetPixelAlpha ( q , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ) ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) return MagickFalse ; } <S2SV_StartBug> SkipRGBMipmaps ( image , dds_info , 4 ) ; <S2SV_EndBug> return MagickTrue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MagickFalse ; } return ( <S2SV_ModStart> dds_info , 4 , exception ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8130\n\n```\nCWE-369 void * _TIFFmalloc ( tmsize_t s ) <S2SV_StartBug> { <S2SV_EndBug> return ( malloc ( ( size_t ) s ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { if ( s == 0 ) return ( ( void * ) NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 static unsigned int do_decrypt ( const RIJNDAEL_context * ctx , unsigned char * bx , const unsigned char * ax ) { # ifdef USE_AMD64_ASM return _gcry_aes_amd64_decrypt_block ( ctx -> keyschdec , bx , ax , ctx -> rounds , <S2SV_StartBug> & dec_tables ) ; <S2SV_EndBug> # elif defined ( USE_ARM_ASM ) return _gcry_aes_arm_decrypt_block ( ctx -> keyschdec , bx , ax , ctx -> rounds , <S2SV_StartBug> & dec_tables ) ; <S2SV_EndBug> # else return do_decrypt_fn ( ctx , bx , ax ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rounds , dec_tables . T <S2SV_ModEnd> ) ; # <S2SV_ModStart> -> rounds , dec_tables . T <S2SV_ModEnd> ) ; #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9710\n\n```\nCWE-362 int btrfs_search_slot ( struct btrfs_trans_handle * trans , struct btrfs_root * root , struct btrfs_key * key , struct btrfs_path * p , int ins_len , int cow ) { struct extent_buffer * b ; int slot ; int ret ; int err ; int level ; int lowest_unlock = 1 ; int root_lock ; int write_lock_level = 0 ; u8 lowest_level = 0 ; int min_write_lock_level ; int prev_cmp ; lowest_level = p -> lowest_level ; WARN_ON ( lowest_level && ins_len > 0 ) ; WARN_ON ( p -> nodes [ 0 ] != NULL ) ; BUG_ON ( ! cow && ins_len ) ; if ( ins_len < 0 ) { lowest_unlock = 2 ; write_lock_level = 2 ; } else if ( ins_len > 0 ) { write_lock_level = 1 ; } if ( ! cow ) write_lock_level = - 1 ; if ( cow && ( p -> keep_locks || p -> lowest_level ) ) write_lock_level = BTRFS_MAX_LEVEL ; min_write_lock_level = write_lock_level ; again : prev_cmp = - 1 ; root_lock = BTRFS_READ_LOCK ; level = 0 ; if ( p -> search_commit_root ) { if ( p -> need_commit_sem ) down_read ( & root -> fs_info -> commit_root_sem ) ; b = root -> commit_root ; extent_buffer_get ( b ) ; level = btrfs_header_level ( b ) ; if ( p -> need_commit_sem ) up_read ( & root -> fs_info -> commit_root_sem ) ; if ( ! p -> skip_locking ) btrfs_tree_read_lock ( b ) ; } else { if ( p -> skip_locking ) { b = btrfs_root_node ( root ) ; level = btrfs_header_level ( b ) ; } else { b = btrfs_read_lock_root_node ( root ) ; level = btrfs_header_level ( b ) ; if ( level <= write_lock_level ) { btrfs_tree_read_unlock ( b ) ; free_extent_buffer ( b ) ; b = btrfs_lock_root_node ( root ) ; root_lock = BTRFS_WRITE_LOCK ; level = btrfs_header_level ( b ) ; } } } p -> nodes [ level ] = b ; if ( ! p -> skip_locking ) p -> locks [ level ] = root_lock ; while ( b ) { level = btrfs_header_level ( b ) ; if ( cow ) { if ( ! should_cow_block ( trans , root , b ) ) goto cow_done ; if ( level > write_lock_level || ( level + 1 > write_lock_level && level + 1 < BTRFS_MAX_LEVEL && p -> nodes [ level + 1 ] ) ) { write_lock_level = level + 1 ; btrfs_release_path ( p ) ; goto again ; } btrfs_set_path_blocking ( p ) ; err = btrfs_cow_block ( trans , root , b , p -> nodes [ level + 1 ] , p -> slots [ level + 1 ] , & b ) ; if ( err ) { ret = err ; goto done ; } } cow_done : p -> nodes [ level ] = b ; btrfs_clear_path_blocking ( p , NULL , 0 ) ; if ( ! ins_len && ! p -> keep_locks ) { int u = level + 1 ; if ( u < BTRFS_MAX_LEVEL && p -> locks [ u ] ) { btrfs_tree_unlock_rw ( p -> nodes [ u ] , p -> locks [ u ] ) ; p -> locks [ u ] = 0 ; } } ret = key_search ( b , key , level , & prev_cmp , & slot ) ; if ( level != 0 ) { int dec = 0 ; if ( ret && slot > 0 ) { dec = 1 ; slot -= 1 ; } p -> slots [ level ] = slot ; err = setup_nodes_for_search ( trans , root , p , b , level , ins_len , & write_lock_level ) ; if ( err == - EAGAIN ) goto again ; if ( err ) { ret = err ; goto done ; } b = p -> nodes [ level ] ; slot = p -> slots [ level ] ; if ( slot == 0 && ins_len && write_lock_level < level + 1 ) { write_lock_level = level + 1 ; btrfs_release_path ( p ) ; goto again ; } unlock_up ( p , level , lowest_unlock , min_write_lock_level , & write_lock_level ) ; if ( level == lowest_level ) { if ( dec ) p -> slots [ level ] ++ ; goto done ; } err = read_block_for_search ( trans , root , p , & b , level , slot , key , 0 ) ; if ( err == - EAGAIN ) goto again ; if ( err ) { ret = err ; goto done ; } if ( ! p -> skip_locking ) { level = btrfs_header_level ( b ) ; if ( level <= write_lock_level ) { err = btrfs_try_tree_write_lock ( b ) ; if ( ! err ) { btrfs_set_path_blocking ( p ) ; btrfs_tree_lock ( b ) ; btrfs_clear_path_blocking ( p , b , BTRFS_WRITE_LOCK ) ; } p -> locks [ level ] = BTRFS_WRITE_LOCK ; } else { err = btrfs_try_tree_read_lock ( b ) ; if ( ! err ) { btrfs_set_path_blocking ( p ) ; btrfs_tree_read_lock ( b ) ; btrfs_clear_path_blocking ( p , b , BTRFS_READ_LOCK ) ; } p -> locks [ level ] = BTRFS_READ_LOCK ; } p -> nodes [ level ] = b ; } } else { p -> slots [ level ] = slot ; if ( ins_len > 0 && btrfs_leaf_free_space ( root , b ) < ins_len ) { if ( write_lock_level < 1 ) { write_lock_level = 1 ; btrfs_release_path ( p ) ; goto again ; } btrfs_set_path_blocking ( p ) ; err = split_leaf ( trans , root , key , p , ins_len , ret == 0 ) ; btrfs_clear_path_blocking ( p , NULL , 0 ) ; BUG_ON ( err > 0 ) ; if ( err ) { ret = err ; goto done ; } } if ( ! p -> search_for_split ) unlock_up ( p , level , lowest_unlock , min_write_lock_level , & write_lock_level ) ; goto done ; } } ret = 1 ; done : if ( ! p -> leave_spinning ) btrfs_set_path_blocking ( p ) ; <S2SV_StartBug> if ( ret < 0 ) <S2SV_EndBug> btrfs_release_path ( p ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret < 0 && ! p -> skip_release_on_error\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3731\n\n```\nCWE-125 static int aes_ccm_ctrl ( EVP_CIPHER_CTX * c , int type , int arg , void * ptr ) { EVP_AES_CCM_CTX * cctx = EVP_C_DATA ( EVP_AES_CCM_CTX , c ) ; switch ( type ) { case EVP_CTRL_INIT : cctx -> key_set = 0 ; cctx -> iv_set = 0 ; cctx -> L = 8 ; cctx -> M = 12 ; cctx -> tag_set = 0 ; cctx -> len_set = 0 ; cctx -> tls_aad_len = - 1 ; return 1 ; case EVP_CTRL_AEAD_TLS1_AAD : if ( arg != EVP_AEAD_TLS1_AAD_LEN ) return 0 ; memcpy ( EVP_CIPHER_CTX_buf_noconst ( c ) , ptr , arg ) ; cctx -> tls_aad_len = arg ; { uint16_t len = EVP_CIPHER_CTX_buf_noconst ( c ) [ arg - 2 ] << 8 | EVP_CIPHER_CTX_buf_noconst ( c ) [ arg - 1 ] ; <S2SV_StartBug> len -= EVP_CCM_TLS_EXPLICIT_IV_LEN ; <S2SV_EndBug> <S2SV_StartBug> if ( ! EVP_CIPHER_CTX_encrypting ( c ) ) <S2SV_EndBug> <S2SV_StartBug> len -= cctx -> M ; <S2SV_EndBug> EVP_CIPHER_CTX_buf_noconst ( c ) [ arg - 2 ] = len >> 8 ; EVP_CIPHER_CTX_buf_noconst ( c ) [ arg - 1 ] = len & 0xff ; } return cctx -> M ; case EVP_CTRL_CCM_SET_IV_FIXED : if ( arg != EVP_CCM_TLS_FIXED_IV_LEN ) return 0 ; memcpy ( EVP_CIPHER_CTX_iv_noconst ( c ) , ptr , arg ) ; return 1 ; case EVP_CTRL_AEAD_SET_IVLEN : arg = 15 - arg ; case EVP_CTRL_CCM_SET_L : if ( arg < 2 || arg > 8 ) return 0 ; cctx -> L = arg ; return 1 ; case EVP_CTRL_AEAD_SET_TAG : if ( ( arg & 1 ) || arg < 4 || arg > 16 ) return 0 ; if ( EVP_CIPHER_CTX_encrypting ( c ) && ptr ) return 0 ; if ( ptr ) { cctx -> tag_set = 1 ; memcpy ( EVP_CIPHER_CTX_buf_noconst ( c ) , ptr , arg ) ; } cctx -> M = arg ; return 1 ; case EVP_CTRL_AEAD_GET_TAG : if ( ! EVP_CIPHER_CTX_encrypting ( c ) || ! cctx -> tag_set ) return 0 ; if ( ! CRYPTO_ccm128_tag ( & cctx -> ccm , ptr , ( size_t ) arg ) ) return 0 ; cctx -> tag_set = 0 ; cctx -> iv_set = 0 ; cctx -> len_set = 0 ; return 1 ; case EVP_CTRL_COPY : { EVP_CIPHER_CTX * out = ptr ; EVP_AES_CCM_CTX * cctx_out = EVP_C_DATA ( EVP_AES_CCM_CTX , out ) ; if ( cctx -> ccm . key ) { if ( cctx -> ccm . key != & cctx -> ks ) return 0 ; cctx_out -> ccm . key = & cctx_out -> ks ; } return 1 ; } default : return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ] ; if ( len < EVP_CCM_TLS_EXPLICIT_IV_LEN ) return 0 ; <S2SV_ModStart> c ) ) { if ( len < cctx -> M ) return 0 ; <S2SV_ModStart> -> M ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 void Com_WriteConfig_f ( void ) { char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { <S2SV_StartBug> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; <S2SV_EndBug> return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; COM_DefaultExtension ( filename , sizeof ( filename ) , \".cfg\" ) ; Com_Printf ( \"Writing<S2SV_blank>%s.\\\\n\" , filename ) ; Com_WriteConfigToFile ( filename ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; return ; } if ( ! COM_CompareExtension ( filename , \".cfg\" ) ) { Com_Printf ( \"Com_WriteConfig_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".cfg\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0310\n\n```\nCWE-119 int cipso_v4_validate ( const struct sk_buff * skb , unsigned char * * option ) { unsigned char * opt = * option ; unsigned char * tag ; unsigned char opt_iter ; unsigned char err_offset = 0 ; u8 opt_len ; u8 tag_len ; struct cipso_v4_doi * doi_def = NULL ; u32 tag_iter ; opt_len = opt [ 1 ] ; if ( opt_len < 8 ) { err_offset = 1 ; goto validate_return ; } rcu_read_lock ( ) ; doi_def = cipso_v4_doi_search ( get_unaligned_be32 ( & opt [ 2 ] ) ) ; if ( doi_def == NULL ) { err_offset = 2 ; goto validate_return_locked ; } opt_iter = CIPSO_V4_HDR_LEN ; tag = opt + opt_iter ; while ( opt_iter < opt_len ) { for ( tag_iter = 0 ; doi_def -> tags [ tag_iter ] != tag [ 0 ] ; ) if ( doi_def -> tags [ tag_iter ] == CIPSO_V4_TAG_INVALID || ++ tag_iter == CIPSO_V4_TAG_MAXCNT ) { err_offset = opt_iter ; goto validate_return_locked ; } tag_len = tag [ 1 ] ; if ( tag_len > ( opt_len - opt_iter ) ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } switch ( tag [ 0 ] ) { case CIPSO_V4_TAG_RBITMAP : if ( tag_len < CIPSO_V4_TAG_RBM_BLEN ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } if ( cipso_v4_rbm_strictvalid ) { if ( cipso_v4_map_lvl_valid ( doi_def , tag [ 3 ] ) < 0 ) { err_offset = opt_iter + 3 ; goto validate_return_locked ; } if ( tag_len > CIPSO_V4_TAG_RBM_BLEN && cipso_v4_map_cat_rbm_valid ( doi_def , & tag [ 4 ] , tag_len - 4 ) < 0 ) { err_offset = opt_iter + 4 ; goto validate_return_locked ; } } break ; case CIPSO_V4_TAG_ENUM : if ( tag_len < CIPSO_V4_TAG_ENUM_BLEN ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } if ( cipso_v4_map_lvl_valid ( doi_def , tag [ 3 ] ) < 0 ) { err_offset = opt_iter + 3 ; goto validate_return_locked ; } if ( tag_len > CIPSO_V4_TAG_ENUM_BLEN && cipso_v4_map_cat_enum_valid ( doi_def , & tag [ 4 ] , tag_len - 4 ) < 0 ) { err_offset = opt_iter + 4 ; goto validate_return_locked ; } break ; case CIPSO_V4_TAG_RANGE : if ( tag_len < CIPSO_V4_TAG_RNG_BLEN ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } if ( cipso_v4_map_lvl_valid ( doi_def , tag [ 3 ] ) < 0 ) { err_offset = opt_iter + 3 ; goto validate_return_locked ; } if ( tag_len > CIPSO_V4_TAG_RNG_BLEN && cipso_v4_map_cat_rng_valid ( doi_def , & tag [ 4 ] , tag_len - 4 ) < 0 ) { err_offset = opt_iter + 4 ; goto validate_return_locked ; } break ; case CIPSO_V4_TAG_LOCAL : <S2SV_StartBug> if ( ! ( skb -> dev -> flags & IFF_LOOPBACK ) ) { <S2SV_EndBug> err_offset = opt_iter ; goto validate_return_locked ; } if ( tag_len != CIPSO_V4_TAG_LOC_BLEN ) { err_offset = opt_iter + 1 ; goto validate_return_locked ; } break ; default : err_offset = opt_iter ; goto validate_return_locked ; } tag += tag_len ; opt_iter += tag_len ; } validate_return_locked : rcu_read_unlock ( ) ; validate_return : * option = opt + err_offset ; return err_offset ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( skb == NULL ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8958\n\n```\nCWE-125 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , <S2SV_StartBug> height , <S2SV_EndBug> length ; ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } switch ( sun_info . maptype ) { case RMT_NONE : break ; case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( ( number_pixels * sun_info . depth ) > ( 8 * sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( sun_info . length , bytes_per_line * sun_info . width ) , sizeof ( * sun_data ) ) ; if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; height = sun_info . height ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( sun_info . type == RT_ENCODED ) ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * height ) ; else { if ( sun_info . length > ( height * bytes_per_line ) ) ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; ( void ) CopyMagickMemory ( sun_pixels , sun_data , sun_info . length ) ; } sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { <S2SV_StartBug> if ( bytes_per_line == 0 ) <S2SV_EndBug> <S2SV_StartBug> bytes_per_line = image -> columns ; <S2SV_EndBug> <S2SV_StartBug> length = image -> rows * ( image -> columns + image -> columns % 2 ) ; <S2SV_EndBug> if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { <S2SV_StartBug> SetPixelIndex ( image , * p ++ , q ) ; <S2SV_EndBug> q += GetPixelChannels ( image ) ; } <S2SV_StartBug> if ( ( image -> columns % 2 ) != 0 ) <S2SV_EndBug> p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + bytes_per_line % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> extent , height <S2SV_ModEnd> ; ssize_t count <S2SV_ModStart> PseudoClass ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , <S2SV_ModEnd> image -> columns <S2SV_ModStart> image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) <S2SV_ModEnd> image -> columns <S2SV_ModStart> image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( <S2SV_ModEnd> image -> columns <S2SV_ModStart> % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns <S2SV_ModEnd> ; for ( <S2SV_ModStart> ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( <S2SV_ModEnd> * p ++ <S2SV_ModStart> * p ++ ) <S2SV_ModStart> q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } <S2SV_ModStart> if ( ( <S2SV_ModEnd> ( bytes_per_pixel *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-704(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18386\n\n```\nCWE-704 static int n_tty_ioctl ( struct tty_struct * tty , struct file * file , unsigned int cmd , unsigned long arg ) { struct n_tty_data * ldata = tty -> disc_data ; int retval ; switch ( cmd ) { case TIOCOUTQ : return put_user ( tty_chars_in_buffer ( tty ) , ( int __user * ) arg ) ; case TIOCINQ : down_write ( & tty -> termios_rwsem ) ; <S2SV_StartBug> if ( L_ICANON ( tty ) ) <S2SV_EndBug> retval = inq_canon ( ldata ) ; else retval = read_cnt ( ldata ) ; up_write ( & tty -> termios_rwsem ) ; return put_user ( retval , ( unsigned int __user * ) arg ) ; default : return n_tty_ioctl_helper ( tty , file , cmd , arg ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( tty ) && ! L_EXTPROC ( tty )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35518\n\n```\nCWE-200 int ldbm_config_search_entry_callback ( Slapi_PBlock * pb __attribute__ ( ( unused ) ) , Slapi_Entry * e , Slapi_Entry * entryAfter __attribute__ ( ( unused ) ) , int * returncode , char * returntext , void * arg ) { char buf [ BUFSIZ ] ; struct berval * vals [ 2 ] ; struct berval val ; struct ldbminfo * li = ( struct ldbminfo * ) arg ; config_info * config ; int scope ; vals [ 0 ] = & val ; vals [ 1 ] = NULL ; returntext [ 0 ] = '\\\\0' ; PR_Lock ( li -> li_config_mutex ) ; if ( pb ) { slapi_pblock_get ( pb , SLAPI_SEARCH_SCOPE , & scope ) ; if ( scope == LDAP_SCOPE_BASE ) { char * * attrs = NULL ; slapi_pblock_get ( pb , SLAPI_SEARCH_ATTRS , & attrs ) ; if ( attrs ) { for ( size_t i = 0 ; attrs [ i ] ; i ++ ) { if ( ldbm_config_moved_attr ( attrs [ i ] ) ) { <S2SV_StartBug> slapi_pblock_set ( pb , SLAPI_PB_RESULT_TEXT , \"at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>required<S2SV_blank>attribute<S2SV_blank>has<S2SV_blank>been<S2SV_blank>moved<S2SV_blank>to<S2SV_blank>the<S2SV_blank>BDB<S2SV_blank>scecific<S2SV_blank>configuration<S2SV_blank>entry\" ) ; <S2SV_EndBug> break ; } } } } } for ( config = ldbm_config ; config -> config_name != NULL ; config ++ ) { if ( ! ( config -> config_flags & ( CONFIG_FLAG_ALWAYS_SHOW | CONFIG_FLAG_PREVIOUSLY_SET ) ) ) { continue ; } ldbm_config_get ( ( void * ) li , config , buf ) ; val . bv_val = buf ; val . bv_len = strlen ( buf ) ; slapi_entry_attr_replace ( e , config -> config_name , vals ) ; } PR_Unlock ( li -> li_config_mutex ) ; * returncode = LDAP_SUCCESS ; return SLAPI_DSE_CALLBACK_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( pb , SLAPI_RESULT_TEXT <S2SV_ModEnd> , \"at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>required<S2SV_blank>attribute<S2SV_blank>has<S2SV_blank>been<S2SV_blank>moved<S2SV_blank>to<S2SV_blank>the<S2SV_blank>BDB<S2SV_blank>scecific<S2SV_blank>configuration<S2SV_blank>entry\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7026\n\n```\nCWE-362 long do_shmat ( int shmid , char __user * shmaddr , int shmflg , ulong * raddr , unsigned long shmlba ) { struct shmid_kernel * shp ; unsigned long addr ; unsigned long size ; struct file * file ; int err ; unsigned long flags ; unsigned long prot ; int acc_mode ; struct ipc_namespace * ns ; struct shm_file_data * sfd ; struct path path ; fmode_t f_mode ; unsigned long populate = 0 ; err = - EINVAL ; if ( shmid < 0 ) goto out ; else if ( ( addr = ( ulong ) shmaddr ) ) { if ( addr & ( shmlba - 1 ) ) { if ( shmflg & SHM_RND ) addr &= ~ ( shmlba - 1 ) ; else # ifndef __ARCH_FORCE_SHMLBA if ( addr & ~ PAGE_MASK ) # endif goto out ; } flags = MAP_SHARED | MAP_FIXED ; } else { if ( ( shmflg & SHM_REMAP ) ) goto out ; flags = MAP_SHARED ; } if ( shmflg & SHM_RDONLY ) { prot = PROT_READ ; acc_mode = S_IRUGO ; f_mode = FMODE_READ ; } else { prot = PROT_READ | PROT_WRITE ; acc_mode = S_IRUGO | S_IWUGO ; f_mode = FMODE_READ | FMODE_WRITE ; } if ( shmflg & SHM_EXEC ) { prot |= PROT_EXEC ; acc_mode |= S_IXUGO ; } ns = current -> nsproxy -> ipc_ns ; rcu_read_lock ( ) ; shp = shm_obtain_object_check ( ns , shmid ) ; if ( IS_ERR ( shp ) ) { err = PTR_ERR ( shp ) ; goto out_unlock ; } err = - EACCES ; if ( ipcperms ( ns , & shp -> shm_perm , acc_mode ) ) goto out_unlock ; err = security_shm_shmat ( shp , shmaddr , shmflg ) ; if ( err ) goto out_unlock ; <S2SV_StartBug> ipc_lock_object ( & shp -> shm_perm ) ; <S2SV_EndBug> path = shp -> shm_file -> f_path ; path_get ( & path ) ; shp -> shm_nattch ++ ; size = i_size_read ( path . dentry -> d_inode ) ; ipc_unlock_object ( & shp -> shm_perm ) ; rcu_read_unlock ( ) ; err = - ENOMEM ; sfd = kzalloc ( sizeof ( * sfd ) , GFP_KERNEL ) ; if ( ! sfd ) { path_put ( & path ) ; goto out_nattch ; } file = alloc_file ( & path , f_mode , is_file_hugepages ( shp -> shm_file ) ? & shm_file_operations_huge : & shm_file_operations ) ; err = PTR_ERR ( file ) ; if ( IS_ERR ( file ) ) { kfree ( sfd ) ; path_put ( & path ) ; goto out_nattch ; } file -> private_data = sfd ; file -> f_mapping = shp -> shm_file -> f_mapping ; sfd -> id = shp -> shm_perm . id ; sfd -> ns = get_ipc_ns ( ns ) ; sfd -> file = shp -> shm_file ; sfd -> vm_ops = NULL ; err = security_mmap_file ( file , prot , flags ) ; if ( err ) goto out_fput ; down_write ( & current -> mm -> mmap_sem ) ; if ( addr && ! ( shmflg & SHM_REMAP ) ) { err = - EINVAL ; if ( find_vma_intersection ( current -> mm , addr , addr + size ) ) goto invalid ; if ( addr < current -> mm -> start_stack && addr > current -> mm -> start_stack - size - PAGE_SIZE * 5 ) goto invalid ; } addr = do_mmap_pgoff ( file , addr , size , prot , flags , 0 , & populate ) ; * raddr = addr ; err = 0 ; if ( IS_ERR_VALUE ( addr ) ) err = ( long ) addr ; invalid : up_write ( & current -> mm -> mmap_sem ) ; if ( populate ) mm_populate ( addr , populate ) ; out_fput : fput ( file ) ; out_nattch : down_write ( & shm_ids ( ns ) . rwsem ) ; shp = shm_lock ( ns , shmid ) ; BUG_ON ( IS_ERR ( shp ) ) ; shp -> shm_nattch -- ; if ( shm_may_destroy ( ns , shp ) ) shm_destroy ( ns , shp ) ; else shm_unlock ( shp ) ; up_write ( & shm_ids ( ns ) . rwsem ) ; return err ; out_unlock : rcu_read_unlock ( ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> shm_perm ) ; if ( shp -> shm_file == NULL ) { ipc_unlock_object ( & shp -> shm_perm ) ; err = - EIDRM ; goto out_unlock ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7841\n\n```\nCWE-399 static int sctp_process_param ( struct sctp_association * asoc , union sctp_params param , const union sctp_addr * peer_addr , gfp_t gfp ) { struct net * net = sock_net ( asoc -> base . sk ) ; union sctp_addr addr ; int i ; __u16 sat ; int retval = 1 ; sctp_scope_t scope ; time_t stale ; struct sctp_af * af ; union sctp_addr_param * addr_param ; struct sctp_transport * t ; struct sctp_endpoint * ep = asoc -> ep ; switch ( param . p -> type ) { case SCTP_PARAM_IPV6_ADDRESS : if ( PF_INET6 != asoc -> base . sk -> sk_family ) break ; goto do_addr_param ; case SCTP_PARAM_IPV4_ADDRESS : if ( ipv6_only_sock ( asoc -> base . sk ) ) break ; do_addr_param : af = sctp_get_af_specific ( param_type2af ( param . p -> type ) ) ; af -> from_addr_param ( & addr , param . addr , htons ( asoc -> peer . port ) , 0 ) ; scope = sctp_scope ( peer_addr ) ; if ( sctp_in_scope ( net , & addr , scope ) ) if ( ! sctp_assoc_add_peer ( asoc , & addr , gfp , SCTP_UNCONFIRMED ) ) return 0 ; break ; case SCTP_PARAM_COOKIE_PRESERVATIVE : if ( ! net -> sctp . cookie_preserve_enable ) break ; stale = ntohl ( param . life -> lifespan_increment ) ; asoc -> cookie_life = ktime_add_ms ( asoc -> cookie_life , stale ) ; break ; case SCTP_PARAM_HOST_NAME_ADDRESS : pr_debug ( \"%s:<S2SV_blank>unimplemented<S2SV_blank>SCTP_HOST_NAME_ADDRESS\\\\n\" , __func__ ) ; break ; case SCTP_PARAM_SUPPORTED_ADDRESS_TYPES : asoc -> peer . ipv4_address = 0 ; asoc -> peer . ipv6_address = 0 ; if ( peer_addr -> sa . sa_family == AF_INET6 ) asoc -> peer . ipv6_address = 1 ; else if ( peer_addr -> sa . sa_family == AF_INET ) asoc -> peer . ipv4_address = 1 ; sat = ntohs ( param . p -> length ) - sizeof ( sctp_paramhdr_t ) ; if ( sat ) sat /= sizeof ( __u16 ) ; for ( i = 0 ; i < sat ; ++ i ) { switch ( param . sat -> types [ i ] ) { case SCTP_PARAM_IPV4_ADDRESS : asoc -> peer . ipv4_address = 1 ; break ; case SCTP_PARAM_IPV6_ADDRESS : if ( PF_INET6 == asoc -> base . sk -> sk_family ) asoc -> peer . ipv6_address = 1 ; break ; case SCTP_PARAM_HOST_NAME_ADDRESS : asoc -> peer . hostname_address = 1 ; break ; default : break ; } } break ; case SCTP_PARAM_STATE_COOKIE : asoc -> peer . cookie_len = ntohs ( param . p -> length ) - sizeof ( sctp_paramhdr_t ) ; asoc -> peer . cookie = param . cookie -> body ; break ; case SCTP_PARAM_HEARTBEAT_INFO : break ; case SCTP_PARAM_UNRECOGNIZED_PARAMETERS : break ; case SCTP_PARAM_ECN_CAPABLE : asoc -> peer . ecn_capable = 1 ; break ; case SCTP_PARAM_ADAPTATION_LAYER_IND : asoc -> peer . adaptation_ind = ntohl ( param . aind -> adaptation_ind ) ; break ; case SCTP_PARAM_SET_PRIMARY : if ( ! net -> sctp . addip_enable ) goto fall_through ; addr_param = param . v + sizeof ( sctp_addip_param_t ) ; af = sctp_get_af_specific ( param_type2af ( param . p -> type ) ) ; <S2SV_StartBug> af -> from_addr_param ( & addr , addr_param , <S2SV_EndBug> htons ( asoc -> peer . port ) , 0 ) ; if ( ! af -> addr_valid ( & addr , NULL , NULL ) ) break ; t = sctp_assoc_lookup_paddr ( asoc , & addr ) ; if ( ! t ) break ; sctp_assoc_set_primary ( asoc , t ) ; break ; case SCTP_PARAM_SUPPORTED_EXT : sctp_process_ext_param ( asoc , param ) ; break ; case SCTP_PARAM_FWD_TSN_SUPPORT : if ( net -> sctp . prsctp_enable ) { asoc -> peer . prsctp_capable = 1 ; break ; } goto fall_through ; case SCTP_PARAM_RANDOM : if ( ! ep -> auth_enable ) goto fall_through ; asoc -> peer . peer_random = kmemdup ( param . p , ntohs ( param . p -> length ) , gfp ) ; if ( ! asoc -> peer . peer_random ) { retval = 0 ; break ; } break ; case SCTP_PARAM_HMAC_ALGO : if ( ! ep -> auth_enable ) goto fall_through ; asoc -> peer . peer_hmacs = kmemdup ( param . p , ntohs ( param . p -> length ) , gfp ) ; if ( ! asoc -> peer . peer_hmacs ) { retval = 0 ; break ; } sctp_auth_asoc_set_default_hmac ( asoc , param . hmac_algo ) ; break ; case SCTP_PARAM_CHUNKS : if ( ! ep -> auth_enable ) goto fall_through ; asoc -> peer . peer_chunks = kmemdup ( param . p , ntohs ( param . p -> length ) , gfp ) ; if ( ! asoc -> peer . peer_chunks ) retval = 0 ; break ; fall_through : default : pr_debug ( \"%s:<S2SV_blank>ignoring<S2SV_blank>param:%d<S2SV_blank>for<S2SV_blank>association:%p.\\\\n\" , __func__ , ntohs ( param . p -> type ) , asoc ) ; break ; } return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( af == NULL ) break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-770(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13189\n\n```\nCWE-770 WORD32 ih264d_create ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { <S2SV_StartBug> ih264d_create_op_t * ps_create_op ; <S2SV_EndBug> <S2SV_StartBug> WORD32 ret ; <S2SV_EndBug> ps_create_op = ( ih264d_create_op_t * ) pv_api_op ; ps_create_op -> s_ivd_create_op_t . u4_error_code = 0 ; <S2SV_StartBug> ret = ih264d_allocate_static_bufs ( & dec_hdl , pv_api_ip , pv_api_op ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( IV_FAIL == ret ) && ( NULL != dec_hdl ) ) <S2SV_EndBug> { <S2SV_StartBug> ih264d_free_static_bufs ( dec_hdl ) ; <S2SV_EndBug> ps_create_op -> s_ivd_create_op_t . u4_error_code = IVD_MEM_ALLOC_FAILED ; ps_create_op -> s_ivd_create_op_t . u4_error_code = 1 << IVD_FATALERROR ; return IV_FAIL ; } return IV_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pv_api_op ) { ih264d_create_ip_t * ps_create_ip ; <S2SV_ModStart> ; WORD32 ret ; ps_create_ip = ( ih264d_create_ip_t * ) pv_api_ip <S2SV_ModStart> = 0 ; dec_hdl = NULL ; <S2SV_ModStart> ; if ( <S2SV_ModEnd> IV_FAIL == ret <S2SV_ModStart> == ret ) { if ( dec_hdl ) { if ( dec_hdl -> pv_codec_handle <S2SV_ModEnd> ) { ih264d_free_static_bufs <S2SV_ModStart> dec_hdl ) ; } else { void ( * pf_aligned_free ) ( void * pv_mem_ctxt , void * pv_buf ) ; void * pv_mem_ctxt ; pf_aligned_free = ps_create_ip -> s_ivd_create_ip_t . pf_aligned_free ; pv_mem_ctxt = ps_create_ip -> s_ivd_create_ip_t . pv_mem_ctxt ; pf_aligned_free ( pv_mem_ctxt , dec_hdl ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18198\n\n```\nCWE-772 static bool fib6_rule_suppress ( struct fib_rule * rule , struct fib_lookup_arg * arg ) { struct fib6_result * res = arg -> result ; struct rt6_info * rt = res -> rt6 ; struct net_device * dev = NULL ; if ( ! rt ) return false ; if ( rt -> rt6i_idev ) dev = rt -> rt6i_idev -> dev ; if ( rt -> rt6i_dst . plen <= rule -> suppress_prefixlen ) goto suppress_route ; if ( rule -> suppress_ifgroup != - 1 && dev && dev -> group == rule -> suppress_ifgroup ) goto suppress_route ; return false ; suppress_route : <S2SV_StartBug> ip6_rt_put ( rt ) ; <S2SV_EndBug> return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; suppress_route : if ( ! ( arg -> flags & FIB_LOOKUP_NOREF ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12667\n\n```\nCWE-772 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; PixelPacket * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; size_t Unknown6 ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; quantum_info = ( QuantumInfo * ) NULL ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } clone_info = ( ImageInfo * ) NULL ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image2 = ReadMATImageV4 ( image_info , image , exception ) ; if ( image2 == NULL ) goto MATLAB_KO ; image = image2 ; goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) <S2SV_StartBug> MATLAB_KO : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_EndBug> filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; if ( MATLAB_HDR . ObjectSize + filepos > GetBlobSize ( image ) ) goto MATLAB_KO ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; clone_info = CloneImageInfo ( image_info ) ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = decompress_block ( image , & MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) continue ; MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; Unknown6 = ReadBlobXXXLong ( image2 ) ; ( void ) Unknown6 ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; default : ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( unsigned long ) ldblk * MATLAB_HDR . SizeY > MATLAB_HDR . ObjectSize ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { SetImageColorspace ( image , GRAYColorspace ) ; image -> type = GrayscaleType ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( ( double * ) BImgBuff , i , image , MinVal , MaxVal ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( ( float * ) BImgBuff , i , image , MinVal , MaxVal ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) unlink ( clone_info -> filename ) ; } } } } RelinquishMagickMemory ( BImgBuff ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; END_OF_READING : if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 6 ) ) { MATLAB_KO : clone_info = DestroyImageInfo ( clone_info ) ; <S2SV_ModEnd> ThrowReaderException ( CorruptImageError <S2SV_ModStart> \"ImproperImageHeader\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1023\n\n```\nCWE-000 static int rds_loop_xmit ( struct rds_connection * conn , struct rds_message * rm , unsigned int hdr_off , unsigned int sg , unsigned int off ) { <S2SV_StartBug> if ( rm -> m_inc . i_hdr . h_flags & RDS_FLAG_CONG_BITMAP ) { <S2SV_EndBug> rds_cong_map_updated ( conn -> c_fcong , ~ ( u64 ) 0 ) ; <S2SV_StartBug> return sizeof ( struct rds_header ) + RDS_CONG_MAP_BYTES ; <S2SV_EndBug> } BUG_ON ( hdr_off || sg || off ) ; rds_inc_init ( & rm -> m_inc , conn , conn -> c_laddr ) ; rds_message_addref ( rm ) ; rds_recv_incoming ( conn , conn -> c_laddr , conn -> c_faddr , & rm -> m_inc , GFP_KERNEL , KM_USER0 ) ; rds_send_drop_acked ( conn , be64_to_cpu ( rm -> m_inc . i_hdr . h_sequence ) , NULL ) ; rds_inc_put ( & rm -> m_inc ) ; <S2SV_StartBug> return sizeof ( struct rds_header ) + be32_to_cpu ( rm -> m_inc . i_hdr . h_len ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> off ) { struct scatterlist * sgp = & rm -> data . op_sg [ sg ] ; int ret = sizeof ( struct rds_header ) + be32_to_cpu ( rm -> m_inc . i_hdr . h_len ) ; <S2SV_ModStart> 0 ) ; ret = min_t ( int , ret , sgp -> length - conn -> c_xmit_data_off ) ; goto out <S2SV_ModEnd> ; } BUG_ON <S2SV_ModStart> m_inc ) ; out : return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5206\n\n```\nCWE-000 static void detect_allow_debuggers ( int argc , char * * argv ) { int i ; for ( i = 1 ; i < argc ; i ++ ) { if ( strcmp ( argv [ i ] , \"--allow-debuggers\" ) == 0 ) { <S2SV_StartBug> arg_allow_debuggers = 1 ; <S2SV_EndBug> break ; } if ( strcmp ( argv [ i ] , \"--\" ) == 0 ) break ; if ( strncmp ( argv [ i ] , \"--\" , 2 ) != 0 ) break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { struct utsname u ; int rv = uname ( & u ) ; if ( rv != 0 ) errExit ( \"uname\" ) ; int major ; int minor ; if ( 2 != sscanf ( u . release , \"%d.%d\" , & major , & minor ) ) { fprintf ( stderr , \"Error:<S2SV_blank>cannot<S2SV_blank>extract<S2SV_blank>Linux<S2SV_blank>kernel<S2SV_blank>version:<S2SV_blank>%s\\\\n\" , u . version ) ; exit ( 1 ) ; } if ( major < 4 || ( major == 4 && minor < 8 ) ) { fprintf ( stderr , \"Error:<S2SV_blank>--allow-debuggers<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>on<S2SV_blank>Linux<S2SV_blank>kernels<S2SV_blank>prior<S2SV_blank>to<S2SV_blank>4.8.<S2SV_blank>\" \"A<S2SV_blank>bug<S2SV_blank>in<S2SV_blank>ptrace<S2SV_blank>call<S2SV_blank>allows<S2SV_blank>a<S2SV_blank>full<S2SV_blank>bypass<S2SV_blank>of<S2SV_blank>the<S2SV_blank>seccomp<S2SV_blank>filter.<S2SV_blank>\" \"Your<S2SV_blank>current<S2SV_blank>kernel<S2SV_blank>version<S2SV_blank>is<S2SV_blank>%d.%d.\\\\n\" , major , minor ) ; exit ( 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13405\n\n```\nCWE-269 void inode_init_owner ( struct inode * inode , const struct inode * dir , umode_t mode ) { inode -> i_uid = current_fsuid ( ) ; if ( dir && dir -> i_mode & S_ISGID ) { inode -> i_gid = dir -> i_gid ; if ( S_ISDIR ( mode ) ) mode |= S_ISGID ; <S2SV_StartBug> } else <S2SV_EndBug> inode -> i_gid = current_fsgid ( ) ; inode -> i_mode = mode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= S_ISGID ; else if ( ( mode & ( S_ISGID | S_IXGRP ) ) == ( S_ISGID | S_IXGRP ) && ! in_group_p ( inode -> i_gid ) && ! capable_wrt_inode_uidgid ( dir , CAP_FSETID ) ) mode &= ~ S_ISGID ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10088\n\n```\nCWE-416 static ssize_t sg_write ( struct file * filp , const char __user * buf , size_t count , loff_t * ppos ) { int mxsize , cmd_size , k ; int input_size , blocking ; unsigned char opcode ; Sg_device * sdp ; Sg_fd * sfp ; Sg_request * srp ; struct sg_header old_hdr ; sg_io_hdr_t * hp ; unsigned char cmnd [ SG_MAX_CDB_SIZE ] ; <S2SV_StartBug> if ( ( ! ( sfp = ( Sg_fd * ) filp -> private_data ) ) || ( ! ( sdp = sfp -> parentdp ) ) ) <S2SV_EndBug> return - ENXIO ; SCSI_LOG_TIMEOUT ( 3 , sg_printk ( KERN_INFO , sdp , \"sg_write:<S2SV_blank>count=%d\\\\n\" , ( int ) count ) ) ; if ( atomic_read ( & sdp -> detaching ) ) return - ENODEV ; if ( ! ( ( filp -> f_flags & O_NONBLOCK ) || scsi_block_when_processing_errors ( sdp -> device ) ) ) return - ENXIO ; if ( ! access_ok ( VERIFY_READ , buf , count ) ) return - EFAULT ; if ( count < SZ_SG_HEADER ) return - EIO ; if ( __copy_from_user ( & old_hdr , buf , SZ_SG_HEADER ) ) return - EFAULT ; blocking = ! ( filp -> f_flags & O_NONBLOCK ) ; if ( old_hdr . reply_len < 0 ) return sg_new_write ( sfp , filp , buf , count , blocking , 0 , 0 , NULL ) ; if ( count < ( SZ_SG_HEADER + 6 ) ) return - EIO ; if ( ! ( srp = sg_add_request ( sfp ) ) ) { SCSI_LOG_TIMEOUT ( 1 , sg_printk ( KERN_INFO , sdp , \"sg_write:<S2SV_blank>queue<S2SV_blank>full\\\\n\" ) ) ; return - EDOM ; } buf += SZ_SG_HEADER ; __get_user ( opcode , buf ) ; if ( sfp -> next_cmd_len > 0 ) { cmd_size = sfp -> next_cmd_len ; sfp -> next_cmd_len = 0 ; } else { cmd_size = COMMAND_SIZE ( opcode ) ; if ( ( opcode >= 0xc0 ) && old_hdr . twelve_byte ) cmd_size = 12 ; } SCSI_LOG_TIMEOUT ( 4 , sg_printk ( KERN_INFO , sdp , \"sg_write:<S2SV_blank><S2SV_blank><S2SV_blank>scsi<S2SV_blank>opcode=0x%02x,<S2SV_blank>cmd_size=%d\\\\n\" , ( int ) opcode , cmd_size ) ) ; input_size = count - cmd_size ; mxsize = ( input_size > old_hdr . reply_len ) ? input_size : old_hdr . reply_len ; mxsize -= SZ_SG_HEADER ; input_size -= SZ_SG_HEADER ; if ( input_size < 0 ) { sg_remove_request ( sfp , srp ) ; return - EIO ; } hp = & srp -> header ; hp -> interface_id = '\\\\0' ; hp -> cmd_len = ( unsigned char ) cmd_size ; hp -> iovec_count = 0 ; hp -> mx_sb_len = 0 ; if ( input_size > 0 ) hp -> dxfer_direction = ( old_hdr . reply_len > SZ_SG_HEADER ) ? SG_DXFER_TO_FROM_DEV : SG_DXFER_TO_DEV ; else hp -> dxfer_direction = ( mxsize > 0 ) ? SG_DXFER_FROM_DEV : SG_DXFER_NONE ; hp -> dxfer_len = mxsize ; if ( ( hp -> dxfer_direction == SG_DXFER_TO_DEV ) || ( hp -> dxfer_direction == SG_DXFER_TO_FROM_DEV ) ) hp -> dxferp = ( char __user * ) buf + cmd_size ; else hp -> dxferp = NULL ; hp -> sbp = NULL ; hp -> timeout = old_hdr . reply_len ; hp -> flags = input_size ; hp -> pack_id = old_hdr . pack_id ; hp -> usr_ptr = NULL ; if ( __copy_from_user ( cmnd , buf , cmd_size ) ) return - EFAULT ; if ( hp -> dxfer_direction == SG_DXFER_TO_FROM_DEV ) { static char cmd [ TASK_COMM_LEN ] ; if ( strcmp ( current -> comm , cmd ) ) { printk_ratelimited ( KERN_WARNING \"sg_write:<S2SV_blank>data<S2SV_blank>in/out<S2SV_blank>%d/%d<S2SV_blank>bytes<S2SV_blank>\" \"for<S2SV_blank>SCSI<S2SV_blank>command<S2SV_blank>0x%x--<S2SV_blank>guessing<S2SV_blank>\" \"data<S2SV_blank>in;\\\\n<S2SV_blank><S2SV_blank><S2SV_blank>program<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>setting<S2SV_blank>\" \"count<S2SV_blank>and/or<S2SV_blank>reply_len<S2SV_blank>properly\\\\n\" , old_hdr . reply_len - ( int ) SZ_SG_HEADER , input_size , ( unsigned int ) cmnd [ 0 ] , current -> comm ) ; strcpy ( cmd , current -> comm ) ; } } k = sg_common_write ( sfp , srp , cmnd , sfp -> timeout , blocking ) ; return ( k < 0 ) ? k : count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( unlikely ( segment_eq ( get_fs ( ) , KERNEL_DS ) ) ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 static long mem_seek ( jas_stream_obj_t * obj , long offset , int origin ) { jas_stream_memobj_t * m = ( jas_stream_memobj_t * ) obj ; <S2SV_StartBug> long newpos ; <S2SV_EndBug> JAS_DBGLOG ( 100 , ( \"mem_seek(%p,<S2SV_blank>%ld,<S2SV_blank>%d)\\\\n\" , obj , offset , origin ) ) ; switch ( origin ) { case SEEK_SET : newpos = offset ; break ; case SEEK_END : newpos = m -> len_ - offset ; break ; case SEEK_CUR : newpos = m -> pos_ + offset ; break ; default : abort ( ) ; break ; } if ( newpos < 0 ) { return - 1 ; } m -> pos_ = newpos ; return m -> pos_ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) obj ; size_t <S2SV_ModEnd> newpos ; JAS_DBGLOG\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11664\n\n```\nCWE-125 struct _mdi * _WM_ParseNewHmi ( uint8_t * hmi_data , uint32_t hmi_size ) { uint32_t hmi_tmp = 0 ; uint8_t * hmi_base = hmi_data ; <S2SV_StartBug> uint16_t hmi_bpm = 0 ; <S2SV_EndBug> uint16_t hmi_division = 0 ; uint32_t hmi_track_cnt = 0 ; uint32_t * hmi_track_offset = NULL ; uint32_t i = 0 ; uint32_t j = 0 ; uint8_t * hmi_addr = NULL ; uint32_t * hmi_track_header_length = NULL ; struct _mdi * hmi_mdi = NULL ; uint32_t tempo_f = 5000000.0 ; uint32_t * hmi_track_end = NULL ; uint8_t hmi_tracks_ended = 0 ; uint8_t * hmi_running_event = NULL ; uint32_t setup_ret = 0 ; uint32_t * hmi_delta = NULL ; uint32_t smallest_delta = 0 ; uint32_t subtract_delta = 0 ; uint32_t sample_count = 0 ; float sample_count_f = 0 ; float sample_remainder = 0 ; float samples_per_delta_f = 0.0 ; struct _note { uint32_t length ; uint8_t channel ; <S2SV_StartBug> } * note ; <S2SV_EndBug> UNUSED ( hmi_size ) ; if ( memcmp ( hmi_data , \"HMI-MIDISONG061595\" , 18 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMI , NULL , 0 ) ; return NULL ; } hmi_bpm = hmi_data [ 212 ] ; hmi_division = 60 ; hmi_track_cnt = hmi_data [ 228 ] ; hmi_mdi = _WM_initMDI ( ) ; _WM_midi_setup_divisions ( hmi_mdi , hmi_division ) ; if ( ( _WM_MixerOptions & WM_MO_ROUNDTEMPO ) ) { tempo_f = ( float ) ( 60000000 / hmi_bpm ) + 0.5f ; } else { tempo_f = ( float ) ( 60000000 / hmi_bpm ) ; } samples_per_delta_f = _WM_GetSamplesPerTick ( hmi_division , ( uint32_t ) tempo_f ) ; _WM_midi_setup_tempo ( hmi_mdi , ( uint32_t ) tempo_f ) ; hmi_track_offset = ( uint32_t * ) malloc ( sizeof ( uint32_t ) * hmi_track_cnt ) ; hmi_track_header_length = malloc ( sizeof ( uint32_t ) * hmi_track_cnt ) ; hmi_track_end = malloc ( sizeof ( uint32_t ) * hmi_track_cnt ) ; hmi_delta = malloc ( sizeof ( uint32_t ) * hmi_track_cnt ) ; note = malloc ( sizeof ( struct _note ) * 128 * hmi_track_cnt ) ; hmi_running_event = malloc ( sizeof ( uint8_t ) * 128 * hmi_track_cnt ) ; hmi_data += 370 ; smallest_delta = 0xffffffff ; if ( hmi_size < ( 370 + ( hmi_track_cnt * 17 ) ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMI , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmi_end ; } hmi_track_offset [ 0 ] = * hmi_data ; for ( i = 0 ; i < hmi_track_cnt ; i ++ ) { hmi_track_offset [ i ] = * hmi_data ++ ; hmi_track_offset [ i ] += ( * hmi_data ++ << 8 ) ; hmi_track_offset [ i ] += ( * hmi_data ++ << 16 ) ; hmi_track_offset [ i ] += ( * hmi_data ++ << 24 ) ; if ( hmi_size < ( hmi_track_offset [ i ] + 0x5a + 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMI , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmi_end ; } hmi_addr = hmi_base + hmi_track_offset [ i ] ; if ( memcmp ( hmi_addr , \"HMI-MIDITRACK\" , 13 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMI , NULL , 0 ) ; goto _hmi_end ; } hmi_track_header_length [ i ] = hmi_addr [ 0x57 ] ; hmi_track_header_length [ i ] += ( hmi_addr [ 0x58 ] << 8 ) ; hmi_track_header_length [ i ] += ( hmi_addr [ 0x59 ] << 16 ) ; hmi_track_header_length [ i ] += ( hmi_addr [ 0x5a ] << 24 ) ; hmi_addr += hmi_track_header_length [ i ] ; hmi_track_offset [ i ] += hmi_track_header_length [ i ] ; hmi_delta [ i ] = 0 ; if ( * hmi_addr > 0x7f ) { do { hmi_delta [ i ] = ( hmi_delta [ i ] << 7 ) + ( * hmi_addr & 0x7f ) ; hmi_addr ++ ; hmi_track_offset [ i ] ++ ; } while ( * hmi_addr > 0x7f ) ; } hmi_delta [ i ] = ( hmi_delta [ i ] << 7 ) + ( * hmi_addr & 0x7f ) ; hmi_track_offset [ i ] ++ ; hmi_addr ++ ; if ( hmi_delta [ i ] < smallest_delta ) { smallest_delta = hmi_delta [ i ] ; } hmi_track_end [ i ] = 0 ; hmi_running_event [ i ] = 0 ; for ( j = 0 ; j < 128 ; j ++ ) { hmi_tmp = ( 128 * i ) + j ; note [ hmi_tmp ] . length = 0 ; note [ hmi_tmp ] . channel = 0 ; } } subtract_delta = smallest_delta ; sample_count_f = ( ( ( float ) smallest_delta * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; hmi_mdi -> events [ hmi_mdi -> event_count - 1 ] . samples_to_next += sample_count ; hmi_mdi -> extra_info . approx_total_samples += sample_count ; while ( hmi_tracks_ended < hmi_track_cnt ) { smallest_delta = 0 ; for ( i = 0 ; i < hmi_track_cnt ; i ++ ) { if ( hmi_track_end [ i ] ) continue ; for ( j = 0 ; j < 128 ; j ++ ) { hmi_tmp = ( 128 * i ) + j ; if ( note [ hmi_tmp ] . length ) { note [ hmi_tmp ] . length -= subtract_delta ; if ( note [ hmi_tmp ] . length ) { if ( ( ! smallest_delta ) || ( smallest_delta > note [ hmi_tmp ] . length ) ) { smallest_delta = note [ hmi_tmp ] . length ; } } else { _WM_midi_setup_noteoff ( hmi_mdi , note [ hmi_tmp ] . channel , j , 0 ) ; } } } if ( hmi_delta [ i ] ) { hmi_delta [ i ] -= subtract_delta ; if ( hmi_delta [ i ] ) { if ( ( ! smallest_delta ) || ( smallest_delta > hmi_delta [ i ] ) ) { smallest_delta = hmi_delta [ i ] ; } continue ; } } do { hmi_data = hmi_base + hmi_track_offset [ i ] ; hmi_delta [ i ] = 0 ; <S2SV_StartBug> if ( hmi_data [ 0 ] == 0xfe ) { <S2SV_EndBug> if ( hmi_data [ 1 ] == 0x10 ) { hmi_tmp = ( hmi_data [ 4 ] + 5 ) ; hmi_data += hmi_tmp ; hmi_track_offset [ i ] += hmi_tmp ; <S2SV_StartBug> } else if ( hmi_data [ 1 ] == 0x15 ) { <S2SV_EndBug> hmi_data += 4 ; hmi_track_offset [ i ] += 4 ; <S2SV_StartBug> } <S2SV_EndBug> hmi_data += 4 ; hmi_track_offset [ i ] += 4 ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> if ( ( setup_ret = _WM_SetupMidiEvent ( hmi_mdi , hmi_data , hmi_running_event [ i ] ) ) == 0 ) { <S2SV_EndBug> goto _hmi_end ; } if ( ( hmi_data [ 0 ] == 0xff ) && ( hmi_data [ 1 ] == 0x2f ) && ( hmi_data [ 2 ] == 0x00 ) ) { hmi_track_end [ i ] = 1 ; hmi_tracks_ended ++ ; for ( j = 0 ; j < 128 ; j ++ ) { hmi_tmp = ( 128 * i ) + j ; if ( note [ hmi_tmp ] . length ) { _WM_midi_setup_noteoff ( hmi_mdi , note [ hmi_tmp ] . channel , j , 0 ) ; note [ hmi_tmp ] . length = 0 ; } } goto _hmi_next_track ; } if ( ( * hmi_data == 0xF0 ) || ( * hmi_data == 0xF7 ) ) { hmi_running_event [ i ] = 0 ; } else if ( * hmi_data < 0xF0 ) { if ( * hmi_data >= 0x80 ) { hmi_running_event [ i ] = * hmi_data ; } } if ( ( hmi_running_event [ i ] & 0xf0 ) == 0x90 ) { if ( * hmi_data > 127 ) { hmi_tmp = hmi_data [ 1 ] ; } else { hmi_tmp = * hmi_data ; } hmi_tmp += ( i * 128 ) ; note [ hmi_tmp ] . channel = hmi_running_event [ i ] & 0xf ; hmi_data += setup_ret ; hmi_track_offset [ i ] += setup_ret ; <S2SV_StartBug> note [ hmi_tmp ] . length = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( * hmi_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> note [ hmi_tmp ] . length = ( note [ hmi_tmp ] . length << 7 ) | ( * hmi_data & 0x7F ) ; hmi_data ++ ; <S2SV_StartBug> hmi_track_offset [ i ] ++ ; <S2SV_EndBug> <S2SV_StartBug> } while ( * hmi_data > 0x7F ) ; <S2SV_EndBug> } note [ hmi_tmp ] . length = ( note [ hmi_tmp ] . length << 7 ) | ( * hmi_data & 0x7F ) ; hmi_data ++ ; <S2SV_StartBug> hmi_track_offset [ i ] ++ ; <S2SV_EndBug> if ( note [ hmi_tmp ] . length ) { if ( ( ! smallest_delta ) || ( smallest_delta > note [ hmi_tmp ] . length ) ) { smallest_delta = note [ hmi_tmp ] . length ; } } else { _WM_midi_setup_noteoff ( hmi_mdi , note [ hmi_tmp ] . channel , j , 0 ) ; } } else { hmi_data += setup_ret ; hmi_track_offset [ i ] += setup_ret ; <S2SV_StartBug> } <S2SV_EndBug> } if ( * hmi_data > 0x7f ) { do { <S2SV_StartBug> hmi_delta [ i ] = ( hmi_delta [ i ] << 7 ) | ( * hmi_data & 0x7F ) ; <S2SV_EndBug> hmi_data ++ ; <S2SV_StartBug> hmi_track_offset [ i ] ++ ; <S2SV_EndBug> } while ( * hmi_data > 0x7F ) ; } <S2SV_StartBug> hmi_delta [ i ] = ( hmi_delta [ i ] << 7 ) | ( * hmi_data & 0x7F ) ; <S2SV_EndBug> <S2SV_StartBug> hmi_data ++ ; <S2SV_EndBug> hmi_track_offset [ i ] ++ ; } while ( ! hmi_delta [ i ] ) ; if ( ( ! smallest_delta ) || ( smallest_delta > hmi_delta [ i ] ) ) { smallest_delta = hmi_delta [ i ] ; } _hmi_next_track : hmi_tmp = 0 ; UNUSED ( hmi_tmp ) ; } subtract_delta = smallest_delta ; sample_count_f = ( ( ( float ) smallest_delta * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; hmi_mdi -> events [ hmi_mdi -> event_count - 1 ] . samples_to_next += sample_count ; hmi_mdi -> extra_info . approx_total_samples += sample_count ; } if ( ( hmi_mdi -> reverb = _WM_init_reverb ( _WM_SampleRate , _WM_reverb_room_width , _WM_reverb_room_length , _WM_reverb_listen_posx , _WM_reverb_listen_posy ) ) == NULL ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_MEM , \"to<S2SV_blank>init<S2SV_blank>reverb\" , 0 ) ; goto _hmi_end ; } hmi_mdi -> extra_info . current_sample = 0 ; hmi_mdi -> current_event = & hmi_mdi -> events [ 0 ] ; hmi_mdi -> samples_to_mix = 0 ; hmi_mdi -> note = NULL ; _WM_ResetToStart ( hmi_mdi ) ; _hmi_end : free ( hmi_track_offset ) ; free ( hmi_track_header_length ) ; free ( hmi_track_end ) ; free ( hmi_delta ) ; free ( note ) ; free ( hmi_running_event ) ; if ( hmi_mdi -> reverb ) return ( hmi_mdi ) ; _WM_freeMDI ( hmi_mdi ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = hmi_data ; uint32_t data_siz ; <S2SV_ModStart> } * note <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; if ( hmi_track_offset [ i ] >= hmi_size ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMI , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmi_end ; } data_siz = hmi_size - hmi_track_offset [ i ] ; if ( <S2SV_ModStart> += hmi_tmp ; hmi_tmp += 4 ; <S2SV_ModStart> += 4 ; hmi_tmp = 8 ; } else { hmi_tmp = 4 ; } hmi_data <S2SV_ModEnd> += 4 ; <S2SV_ModStart> += 4 ; hmi_track_offset [ i ] += 4 ; if ( hmi_tmp > data_siz ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMI , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmi_end ; } data_siz -= hmi_tmp ; <S2SV_ModStart> hmi_mdi , hmi_data , data_siz <S2SV_ModStart> += setup_ret ; data_siz -= setup_ret ; <S2SV_ModStart> ; if ( data_siz && <S2SV_ModStart> { do { if ( ! data_siz ) break ; <S2SV_ModStart> hmi_data ++ ; data_siz -- ; <S2SV_ModStart> > 0x7F ) ; } if ( ! data_siz ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMI , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmi_end <S2SV_ModStart> hmi_data ++ ; data_siz -- ; <S2SV_ModStart> += setup_ret ; data_siz -= setup_ret ; } } if ( data_siz && <S2SV_ModEnd> * hmi_data > <S2SV_ModStart> { do { if ( ! data_siz ) break ; <S2SV_ModStart> hmi_data ++ ; data_siz -- ; <S2SV_ModStart> ) ; } if ( ! data_siz ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMI , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmi_end ; } <S2SV_ModStart> ; hmi_data ++ ; data_siz --\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 l_int32 gplotGenCommandFile ( GPLOT * gplot ) { <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> char * cmdstr , * plottitle , * dataname ; l_int32 i , plotstyle , nplots ; FILE * fp ; PROCNAME ( \"gplotGenCommandFile\" ) ; if ( ! gplot ) return ERROR_INT ( \"gplot<S2SV_blank>not<S2SV_blank>defined\" , procName , 1 ) ; sarrayClear ( gplot -> cmddata ) ; if ( gplot -> title ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>title<S2SV_blank>\\'%s\\'\" , gplot -> title ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } if ( gplot -> xlabel ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>xlabel<S2SV_blank>\\'%s\\'\" , gplot -> xlabel ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } if ( gplot -> ylabel ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>ylabel<S2SV_blank>\\'%s\\'\" , gplot -> ylabel ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } if ( gplot -> outformat == GPLOT_PNG ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>terminal<S2SV_blank>png;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_EndBug> gplot -> outname ) ; } else if ( gplot -> outformat == GPLOT_PS ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>terminal<S2SV_blank>postscript;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_EndBug> gplot -> outname ) ; } else if ( gplot -> outformat == GPLOT_EPS ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , <S2SV_EndBug> \"set<S2SV_blank>terminal<S2SV_blank>postscript<S2SV_blank>eps;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , gplot -> outname ) ; } else if ( gplot -> outformat == GPLOT_LATEX ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>terminal<S2SV_blank>latex;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_EndBug> gplot -> outname ) ; } sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; if ( gplot -> scaling == GPLOT_LOG_SCALE_X || gplot -> scaling == GPLOT_LOG_SCALE_X_Y ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>logscale<S2SV_blank>x\" ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } if ( gplot -> scaling == GPLOT_LOG_SCALE_Y || gplot -> scaling == GPLOT_LOG_SCALE_X_Y ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"set<S2SV_blank>logscale<S2SV_blank>y\" ) ; <S2SV_EndBug> sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } nplots = sarrayGetCount ( gplot -> datanames ) ; for ( i = 0 ; i < nplots ; i ++ ) { plottitle = sarrayGetString ( gplot -> plottitles , i , L_NOCOPY ) ; dataname = sarrayGetString ( gplot -> datanames , i , L_NOCOPY ) ; numaGetIValue ( gplot -> plotstyles , i , & plotstyle ) ; if ( nplots == 1 ) { <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"plot<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s\" , <S2SV_EndBug> dataname , plottitle , gplotstylenames [ plotstyle ] ) ; } else { if ( i == 0 ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"plot<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s,<S2SV_blank>\\\\\\\\\" , <S2SV_EndBug> dataname , plottitle , gplotstylenames [ plotstyle ] ) ; else if ( i < nplots - 1 ) <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s,<S2SV_blank>\\\\\\\\\" , <S2SV_EndBug> dataname , plottitle , gplotstylenames [ plotstyle ] ) ; else <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s\" , <S2SV_EndBug> dataname , plottitle , gplotstylenames [ plotstyle ] ) ; } sarrayAddString ( gplot -> cmddata , buf , L_COPY ) ; } cmdstr = sarrayToString ( gplot -> cmddata , 1 ) ; if ( ( fp = fopenWriteStream ( gplot -> cmdname , \"w\" ) ) == NULL ) { LEPT_FREE ( cmdstr ) ; return ERROR_INT ( \"cmd<S2SV_blank>stream<S2SV_blank>not<S2SV_blank>opened\" , procName , 1 ) ; } fwrite ( cmdstr , 1 , strlen ( cmdstr ) , fp ) ; fclose ( fp ) ; LEPT_FREE ( cmdstr ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>title<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>xlabel<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>ylabel<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>terminal<S2SV_blank>png;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>terminal<S2SV_blank>postscript;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>terminal<S2SV_blank>postscript<S2SV_blank>eps;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>terminal<S2SV_blank>latex;<S2SV_blank>set<S2SV_blank>output<S2SV_blank>\\'%s\\'\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>logscale<S2SV_blank>x\" ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"set<S2SV_blank>logscale<S2SV_blank>y\" ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"plot<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"plot<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s,<S2SV_blank>\\\\\\\\\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s,<S2SV_blank>\\\\\\\\\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"<S2SV_blank>\\'%s\\'<S2SV_blank>title<S2SV_blank>\\'%s\\'<S2SV_blank>%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int misaligned_fpu_load ( struct pt_regs * regs , __u32 opcode , int displacement_not_indexed , int width_shift , int do_paired_load ) { int error ; int destreg ; __u64 address ; error = generate_and_check_address ( regs , opcode , displacement_not_indexed , width_shift , & address ) ; if ( error < 0 ) { return error ; } <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , address ) ; <S2SV_EndBug> destreg = ( opcode >> 4 ) & 0x3f ; if ( user_mode ( regs ) ) { __u64 buffer ; __u32 buflo , bufhi ; if ( ! access_ok ( VERIFY_READ , ( unsigned long ) address , 1UL << width_shift ) ) { return - 1 ; } if ( __copy_user ( & buffer , ( const void * ) ( int ) address , ( 1 << width_shift ) ) > 0 ) { return - 1 ; } if ( last_task_used_math == current ) { enable_fpu ( ) ; save_fpu ( current ) ; disable_fpu ( ) ; last_task_used_math = NULL ; regs -> sr |= SR_FD ; } buflo = * ( __u32 * ) & buffer ; bufhi = * ( 1 + ( __u32 * ) & buffer ) ; switch ( width_shift ) { case 2 : current -> thread . xstate -> hardfpu . fp_regs [ destreg ] = buflo ; break ; case 3 : if ( do_paired_load ) { current -> thread . xstate -> hardfpu . fp_regs [ destreg ] = buflo ; current -> thread . xstate -> hardfpu . fp_regs [ destreg + 1 ] = bufhi ; } else { # if defined ( CONFIG_CPU_LITTLE_ENDIAN ) current -> thread . xstate -> hardfpu . fp_regs [ destreg ] = bufhi ; current -> thread . xstate -> hardfpu . fp_regs [ destreg + 1 ] = buflo ; # else current -> thread . xstate -> hardfpu . fp_regs [ destreg ] = buflo ; current -> thread . xstate -> hardfpu . fp_regs [ destreg + 1 ] = bufhi ; # endif } break ; default : printk ( \"Unexpected<S2SV_blank>width_shift<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>misaligned_fpu_load,<S2SV_blank>PC=%08lx\\\\n\" , width_shift , ( unsigned long ) regs -> pc ) ; break ; } return 0 ; } else { die ( \"Misaligned<S2SV_blank>FPU<S2SV_blank>load<S2SV_blank>inside<S2SV_blank>kernel\" , regs , 0 ) ; return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , address\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2232\n\n```\nCWE-20 static struct dst_entry * ip6_sk_dst_check ( struct sock * sk , struct dst_entry * dst , const struct flowi6 * fl6 ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; <S2SV_StartBug> struct rt6_info * rt = ( struct rt6_info * ) dst ; <S2SV_EndBug> if ( ! dst ) <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( ip6_rt_check ( & rt -> rt6i_dst , & fl6 -> daddr , np -> daddr_cache ) || # ifdef CONFIG_IPV6_SUBTREES ip6_rt_check ( & rt -> rt6i_src , & fl6 -> saddr , np -> saddr_cache ) || # endif ( fl6 -> flowi6_oif && fl6 -> flowi6_oif != dst -> dev -> ifindex ) ) { dst_release ( dst ) ; dst = NULL ; } out : return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rt6_info * rt <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) goto out ; if ( dst -> ops -> family != AF_INET6 ) { dst_release ( dst ) ; return NULL ; } rt = ( struct rt6_info * ) dst\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 int ext2_xattr_set ( struct inode * inode , int name_index , const char * name , const void * value , size_t value_len , int flags ) { struct super_block * sb = inode -> i_sb ; struct buffer_head * bh = NULL ; struct ext2_xattr_header * header = NULL ; struct ext2_xattr_entry * here , * last ; size_t name_len , free , min_offs = sb -> s_blocksize ; int not_found = 1 , error ; char * end ; ea_idebug ( inode , \"name=%d.%s,<S2SV_blank>value=%p,<S2SV_blank>value_len=%ld\" , name_index , name , value , ( long ) value_len ) ; if ( value == NULL ) value_len = 0 ; if ( name == NULL ) return - EINVAL ; name_len = strlen ( name ) ; if ( name_len > 255 || value_len > sb -> s_blocksize ) return - ERANGE ; down_write ( & EXT2_I ( inode ) -> xattr_sem ) ; if ( EXT2_I ( inode ) -> i_file_acl ) { bh = sb_bread ( sb , EXT2_I ( inode ) -> i_file_acl ) ; error = - EIO ; if ( ! bh ) goto cleanup ; ea_bdebug ( bh , \"b_count=%d,<S2SV_blank>refcount=%d\" , atomic_read ( & ( bh -> b_count ) ) , le32_to_cpu ( HDR ( bh ) -> h_refcount ) ) ; header = HDR ( bh ) ; end = bh -> b_data + bh -> b_size ; if ( header -> h_magic != cpu_to_le32 ( EXT2_XATTR_MAGIC ) || header -> h_blocks != cpu_to_le32 ( 1 ) ) { bad_block : ext2_error ( sb , \"ext2_xattr_set\" , \"inode<S2SV_blank>%ld:<S2SV_blank>bad<S2SV_blank>block<S2SV_blank>%d\" , inode -> i_ino , EXT2_I ( inode ) -> i_file_acl ) ; error = - EIO ; goto cleanup ; } here = FIRST_ENTRY ( bh ) ; while ( ! IS_LAST_ENTRY ( here ) ) { struct ext2_xattr_entry * next = EXT2_XATTR_NEXT ( here ) ; if ( ( char * ) next >= end ) goto bad_block ; if ( ! here -> e_value_block && here -> e_value_size ) { size_t offs = le16_to_cpu ( here -> e_value_offs ) ; if ( offs < min_offs ) min_offs = offs ; } not_found = name_index - here -> e_name_index ; if ( ! not_found ) not_found = name_len - here -> e_name_len ; if ( ! not_found ) not_found = memcmp ( name , here -> e_name , name_len ) ; if ( not_found <= 0 ) break ; here = next ; } last = here ; while ( ! IS_LAST_ENTRY ( last ) ) { struct ext2_xattr_entry * next = EXT2_XATTR_NEXT ( last ) ; if ( ( char * ) next >= end ) goto bad_block ; if ( ! last -> e_value_block && last -> e_value_size ) { size_t offs = le16_to_cpu ( last -> e_value_offs ) ; if ( offs < min_offs ) min_offs = offs ; } last = next ; } free = min_offs - ( ( char * ) last - ( char * ) header ) - sizeof ( __u32 ) ; } else { free = sb -> s_blocksize - sizeof ( struct ext2_xattr_header ) - sizeof ( __u32 ) ; here = last = NULL ; } if ( not_found ) { error = - ENODATA ; if ( flags & XATTR_REPLACE ) goto cleanup ; error = 0 ; if ( value == NULL ) goto cleanup ; } else { error = - EEXIST ; if ( flags & XATTR_CREATE ) goto cleanup ; if ( ! here -> e_value_block && here -> e_value_size ) { size_t size = le32_to_cpu ( here -> e_value_size ) ; if ( le16_to_cpu ( here -> e_value_offs ) + size > sb -> s_blocksize || size > sb -> s_blocksize ) goto bad_block ; free += EXT2_XATTR_SIZE ( size ) ; } free += EXT2_XATTR_LEN ( name_len ) ; } error = - ENOSPC ; if ( free < EXT2_XATTR_LEN ( name_len ) + EXT2_XATTR_SIZE ( value_len ) ) goto cleanup ; if ( header ) { <S2SV_StartBug> struct mb_cache_entry * ce ; <S2SV_EndBug> ce = mb_cache_entry_get ( ext2_xattr_cache , bh -> b_bdev , bh -> b_blocknr ) ; lock_buffer ( bh ) ; if ( header -> h_refcount == cpu_to_le32 ( 1 ) ) { <S2SV_StartBug> ea_bdebug ( bh , \"modifying<S2SV_blank>in-place\" ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ce ) <S2SV_EndBug> mb_cache_entry_free ( ce ) ; } else { <S2SV_StartBug> int offset ; <S2SV_EndBug> if ( ce ) mb_cache_entry_release ( ce ) ; unlock_buffer ( bh ) ; ea_bdebug ( bh , \"cloning\" ) ; header = kmalloc ( bh -> b_size , GFP_KERNEL ) ; error = - ENOMEM ; if ( header == NULL ) goto cleanup ; memcpy ( header , HDR ( bh ) , bh -> b_size ) ; header -> h_refcount = cpu_to_le32 ( 1 ) ; offset = ( char * ) here - bh -> b_data ; here = ENTRY ( ( char * ) header + offset ) ; offset = ( char * ) last - bh -> b_data ; last = ENTRY ( ( char * ) header + offset ) ; } } else { header = kzalloc ( sb -> s_blocksize , GFP_KERNEL ) ; error = - ENOMEM ; if ( header == NULL ) goto cleanup ; end = ( char * ) header + sb -> s_blocksize ; header -> h_magic = cpu_to_le32 ( EXT2_XATTR_MAGIC ) ; header -> h_blocks = header -> h_refcount = cpu_to_le32 ( 1 ) ; last = here = ENTRY ( header + 1 ) ; } if ( not_found ) { size_t size = EXT2_XATTR_LEN ( name_len ) ; size_t rest = ( char * ) last - ( char * ) here ; memmove ( ( char * ) here + size , here , rest ) ; memset ( here , 0 , size ) ; here -> e_name_index = name_index ; here -> e_name_len = name_len ; memcpy ( here -> e_name , name , name_len ) ; } else { if ( ! here -> e_value_block && here -> e_value_size ) { char * first_val = ( char * ) header + min_offs ; size_t offs = le16_to_cpu ( here -> e_value_offs ) ; char * val = ( char * ) header + offs ; size_t size = EXT2_XATTR_SIZE ( le32_to_cpu ( here -> e_value_size ) ) ; if ( size == EXT2_XATTR_SIZE ( value_len ) ) { here -> e_value_size = cpu_to_le32 ( value_len ) ; memset ( val + size - EXT2_XATTR_PAD , 0 , EXT2_XATTR_PAD ) ; memcpy ( val , value , value_len ) ; goto skip_replace ; } memmove ( first_val + size , first_val , val - first_val ) ; memset ( first_val , 0 , size ) ; here -> e_value_offs = 0 ; min_offs += size ; last = ENTRY ( header + 1 ) ; while ( ! IS_LAST_ENTRY ( last ) ) { size_t o = le16_to_cpu ( last -> e_value_offs ) ; if ( ! last -> e_value_block && o < offs ) last -> e_value_offs = cpu_to_le16 ( o + size ) ; last = EXT2_XATTR_NEXT ( last ) ; } } if ( value == NULL ) { size_t size = EXT2_XATTR_LEN ( name_len ) ; last = ENTRY ( ( char * ) last - size ) ; memmove ( here , ( char * ) here + size , ( char * ) last - ( char * ) here ) ; memset ( last , 0 , size ) ; } } if ( value != NULL ) { here -> e_value_size = cpu_to_le32 ( value_len ) ; if ( value_len ) { size_t size = EXT2_XATTR_SIZE ( value_len ) ; char * val = ( char * ) header + min_offs - size ; here -> e_value_offs = cpu_to_le16 ( ( char * ) val - ( char * ) header ) ; memset ( val + size - EXT2_XATTR_PAD , 0 , EXT2_XATTR_PAD ) ; memcpy ( val , value , value_len ) ; } } skip_replace : if ( IS_LAST_ENTRY ( ENTRY ( header + 1 ) ) ) { if ( bh && header == HDR ( bh ) ) unlock_buffer ( bh ) ; error = ext2_xattr_set2 ( inode , bh , NULL ) ; } else { ext2_xattr_rehash ( header , here ) ; if ( bh && header == HDR ( bh ) ) unlock_buffer ( bh ) ; error = ext2_xattr_set2 ( inode , bh , header ) ; } cleanup : brelse ( bh ) ; if ( ! ( bh && header == HDR ( bh ) ) ) kfree ( header ) ; up_write ( & EXT2_I ( inode ) -> xattr_sem ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> header ) { <S2SV_ModEnd> lock_buffer ( bh <S2SV_ModStart> ) ) { __u32 hash = le32_to_cpu ( header -> h_hash ) ; <S2SV_ModStart> \"modifying<S2SV_blank>in-place\" ) ; mb2_cache_entry_delete_block ( EXT2_SB ( sb ) -> s_mb_cache , hash , bh -> b_blocknr <S2SV_ModEnd> ) ; } <S2SV_ModStart> { int offset <S2SV_ModEnd> ; unlock_buffer (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13715\n\n```\nCWE-20 bool __skb_flow_dissect ( const struct sk_buff * skb , struct flow_dissector * flow_dissector , void * target_container , void * data , __be16 proto , int nhoff , int hlen ) { struct flow_dissector_key_control * key_control ; struct flow_dissector_key_basic * key_basic ; struct flow_dissector_key_addrs * key_addrs ; struct flow_dissector_key_ports * key_ports ; struct flow_dissector_key_tags * key_tags ; struct flow_dissector_key_keyid * key_keyid ; <S2SV_StartBug> u8 ip_proto = 0 ; <S2SV_EndBug> if ( ! data ) { data = skb -> data ; proto = skb -> protocol ; nhoff = skb_network_offset ( skb ) ; hlen = skb_headlen ( skb ) ; } key_control = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_CONTROL , target_container ) ; key_basic = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_BASIC , target_container ) ; if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_ETH_ADDRS ) ) { struct ethhdr * eth = eth_hdr ( skb ) ; struct flow_dissector_key_eth_addrs * key_eth_addrs ; key_eth_addrs = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_ETH_ADDRS , target_container ) ; memcpy ( key_eth_addrs , & eth -> h_dest , sizeof ( * key_eth_addrs ) ) ; } again : switch ( proto ) { case htons ( ETH_P_IP ) : { const struct iphdr * iph ; struct iphdr _iph ; ip : iph = __skb_header_pointer ( skb , nhoff , sizeof ( _iph ) , data , hlen , & _iph ) ; if ( ! iph || iph -> ihl < 5 ) <S2SV_StartBug> return false ; <S2SV_EndBug> nhoff += iph -> ihl * 4 ; ip_proto = iph -> protocol ; if ( ip_is_fragment ( iph ) ) ip_proto = 0 ; if ( ! skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_IPV4_ADDRS ) ) break ; key_addrs = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_IPV4_ADDRS , target_container ) ; memcpy ( & key_addrs -> v4addrs , & iph -> saddr , sizeof ( key_addrs -> v4addrs ) ) ; key_control -> addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS ; break ; } case htons ( ETH_P_IPV6 ) : { const struct ipv6hdr * iph ; struct ipv6hdr _iph ; __be32 flow_label ; ipv6 : iph = __skb_header_pointer ( skb , nhoff , sizeof ( _iph ) , data , hlen , & _iph ) ; if ( ! iph ) <S2SV_StartBug> return false ; <S2SV_EndBug> ip_proto = iph -> nexthdr ; nhoff += sizeof ( struct ipv6hdr ) ; if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_IPV6_ADDRS ) ) { struct flow_dissector_key_ipv6_addrs * key_ipv6_addrs ; key_ipv6_addrs = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_IPV6_ADDRS , target_container ) ; memcpy ( key_ipv6_addrs , & iph -> saddr , sizeof ( * key_ipv6_addrs ) ) ; key_control -> addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS ; } flow_label = ip6_flowlabel ( iph ) ; if ( flow_label ) { if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_FLOW_LABEL ) ) { key_tags = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_FLOW_LABEL , target_container ) ; key_tags -> flow_label = ntohl ( flow_label ) ; } } break ; } case htons ( ETH_P_8021AD ) : case htons ( ETH_P_8021Q ) : { const struct vlan_hdr * vlan ; struct vlan_hdr _vlan ; vlan = __skb_header_pointer ( skb , nhoff , sizeof ( _vlan ) , data , hlen , & _vlan ) ; if ( ! vlan ) <S2SV_StartBug> return false ; <S2SV_EndBug> if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_VLANID ) ) { key_tags = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_VLANID , target_container ) ; key_tags -> vlan_id = skb_vlan_tag_get_id ( skb ) ; } proto = vlan -> h_vlan_encapsulated_proto ; nhoff += sizeof ( * vlan ) ; goto again ; } case htons ( ETH_P_PPP_SES ) : { struct { struct pppoe_hdr hdr ; __be16 proto ; } * hdr , _hdr ; hdr = __skb_header_pointer ( skb , nhoff , sizeof ( _hdr ) , data , hlen , & _hdr ) ; if ( ! hdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> proto = hdr -> proto ; nhoff += PPPOE_SES_HLEN ; switch ( proto ) { case htons ( PPP_IP ) : goto ip ; case htons ( PPP_IPV6 ) : goto ipv6 ; default : <S2SV_StartBug> return false ; <S2SV_EndBug> } } case htons ( ETH_P_TIPC ) : { struct { __be32 pre [ 3 ] ; __be32 srcnode ; } * hdr , _hdr ; hdr = __skb_header_pointer ( skb , nhoff , sizeof ( _hdr ) , data , hlen , & _hdr ) ; if ( ! hdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> key_basic -> n_proto = proto ; key_control -> thoff = ( u16 ) nhoff ; if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_TIPC_ADDRS ) ) { key_addrs = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_TIPC_ADDRS , target_container ) ; key_addrs -> tipcaddrs . srcnode = hdr -> srcnode ; key_control -> addr_type = FLOW_DISSECTOR_KEY_TIPC_ADDRS ; } <S2SV_StartBug> return true ; <S2SV_EndBug> } case htons ( ETH_P_MPLS_UC ) : case htons ( ETH_P_MPLS_MC ) : { struct mpls_label * hdr , _hdr [ 2 ] ; mpls : hdr = __skb_header_pointer ( skb , nhoff , sizeof ( _hdr ) , data , hlen , & _hdr ) ; if ( ! hdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> if ( ( ntohl ( hdr [ 0 ] . entry ) & MPLS_LS_LABEL_MASK ) >> MPLS_LS_LABEL_SHIFT == MPLS_LABEL_ENTROPY ) { if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_MPLS_ENTROPY ) ) { key_keyid = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_MPLS_ENTROPY , target_container ) ; key_keyid -> keyid = hdr [ 1 ] . entry & htonl ( MPLS_LS_LABEL_MASK ) ; } <S2SV_StartBug> key_basic -> n_proto = proto ; <S2SV_EndBug> key_basic -> ip_proto = ip_proto ; key_control -> thoff = ( u16 ) nhoff ; return true ; } return true ; } case htons ( ETH_P_FCOE ) : key_control -> thoff = ( u16 ) ( nhoff + FCOE_HEADER_LEN ) ; default : <S2SV_StartBug> return false ; <S2SV_EndBug> } ip_proto_again : switch ( ip_proto ) { case IPPROTO_GRE : { struct gre_hdr { __be16 flags ; __be16 proto ; } * hdr , _hdr ; hdr = __skb_header_pointer ( skb , nhoff , sizeof ( _hdr ) , data , hlen , & _hdr ) ; if ( ! hdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> if ( hdr -> flags & ( GRE_VERSION | GRE_ROUTING ) ) break ; proto = hdr -> proto ; nhoff += 4 ; if ( hdr -> flags & GRE_CSUM ) nhoff += 4 ; if ( hdr -> flags & GRE_KEY ) { const __be32 * keyid ; __be32 _keyid ; keyid = __skb_header_pointer ( skb , nhoff , sizeof ( _keyid ) , data , hlen , & _keyid ) ; if ( ! keyid ) <S2SV_StartBug> return false ; <S2SV_EndBug> if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_GRE_KEYID ) ) { key_keyid = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_GRE_KEYID , target_container ) ; key_keyid -> keyid = * keyid ; } nhoff += 4 ; } if ( hdr -> flags & GRE_SEQ ) nhoff += 4 ; if ( proto == htons ( ETH_P_TEB ) ) { const struct ethhdr * eth ; struct ethhdr _eth ; eth = __skb_header_pointer ( skb , nhoff , sizeof ( _eth ) , data , hlen , & _eth ) ; if ( ! eth ) <S2SV_StartBug> return false ; <S2SV_EndBug> proto = eth -> h_proto ; nhoff += sizeof ( * eth ) ; } goto again ; } case NEXTHDR_HOP : case NEXTHDR_ROUTING : case NEXTHDR_DEST : { u8 _opthdr [ 2 ] , * opthdr ; if ( proto != htons ( ETH_P_IPV6 ) ) break ; opthdr = __skb_header_pointer ( skb , nhoff , sizeof ( _opthdr ) , data , hlen , & _opthdr ) ; if ( ! opthdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> ip_proto = opthdr [ 0 ] ; nhoff += ( opthdr [ 1 ] + 1 ) << 3 ; goto ip_proto_again ; } case IPPROTO_IPIP : proto = htons ( ETH_P_IP ) ; goto ip ; case IPPROTO_IPV6 : proto = htons ( ETH_P_IPV6 ) ; goto ipv6 ; case IPPROTO_MPLS : proto = htons ( ETH_P_MPLS_UC ) ; goto mpls ; default : break ; } <S2SV_StartBug> key_basic -> n_proto = proto ; <S2SV_EndBug> key_basic -> ip_proto = ip_proto ; key_control -> thoff = ( u16 ) nhoff ; <S2SV_StartBug> if ( skb_flow_dissector_uses_key ( flow_dissector , <S2SV_EndBug> FLOW_DISSECTOR_KEY_PORTS ) ) { key_ports = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_PORTS , target_container ) ; key_ports -> ports = __skb_flow_get_ports ( skb , nhoff , ip_proto , data , hlen ) ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip_proto = 0 ; bool ret = false <S2SV_ModStart> < 5 ) goto out_bad <S2SV_ModEnd> ; nhoff += <S2SV_ModStart> ! iph ) goto out_bad <S2SV_ModEnd> ; ip_proto = <S2SV_ModStart> ! vlan ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> ! hdr ) goto out_bad <S2SV_ModEnd> ; proto = <S2SV_ModStart> ; default : goto out_bad <S2SV_ModEnd> ; } } <S2SV_ModStart> ! hdr ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> FLOW_DISSECTOR_KEY_TIPC_ADDRS ; } goto out_good <S2SV_ModEnd> ; } case <S2SV_ModStart> ! hdr ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ; } goto out_good ; } goto out_good <S2SV_ModEnd> ; } case <S2SV_ModStart> ; default : goto out_bad <S2SV_ModEnd> ; } ip_proto_again <S2SV_ModStart> ! hdr ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> ! keyid ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> ! eth ) goto out_bad <S2SV_ModEnd> ; proto = <S2SV_ModStart> ! opthdr ) goto out_bad <S2SV_ModEnd> ; ip_proto = <S2SV_ModStart> break ; } if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_PORTS ) ) { key_ports = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_PORTS , target_container ) ; key_ports -> ports = __skb_flow_get_ports ( skb , nhoff , ip_proto , data , hlen ) ; } out_good : ret = true ; out_bad : <S2SV_ModStart> ) nhoff ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_comprehension ( void * _o ) { comprehension_ty o = ( comprehension_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } result = PyType_GenericNew ( comprehension_type , NULL , NULL ) ; if ( ! result ) return NULL ; value = ast2obj_expr ( o -> target ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_target , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> iter ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_iter , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> ifs , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_ifs , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> is_async ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_is_async , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } result\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9994\n\n```\nCWE-119 static av_always_inline int vp78_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt , int is_vp7 ) { VP8Context * s = avctx -> priv_data ; int ret , i , referenced , num_jobs ; enum AVDiscard skip_thresh ; <S2SV_StartBug> VP8Frame * av_uninit ( curframe ) , * prev_frame ; <S2SV_EndBug> if ( is_vp7 ) ret = vp7_decode_frame_header ( s , avpkt -> data , avpkt -> size ) ; else ret = vp8_decode_frame_header ( s , avpkt -> data , avpkt -> size ) ; if ( ret < 0 ) goto err ; prev_frame = s -> framep [ VP56_FRAME_CURRENT ] ; referenced = s -> update_last || s -> update_golden == VP56_FRAME_CURRENT || s -> update_altref == VP56_FRAME_CURRENT ; skip_thresh = ! referenced ? AVDISCARD_NONREF : ! s -> keyframe ? AVDISCARD_NONKEY : AVDISCARD_ALL ; if ( avctx -> skip_frame >= skip_thresh ) { s -> invisible = 1 ; memcpy ( & s -> next_framep [ 0 ] , & s -> framep [ 0 ] , sizeof ( s -> framep [ 0 ] ) * 4 ) ; goto skip_decode ; } s -> deblock_filter = s -> filter . level && avctx -> skip_loop_filter < skip_thresh ; for ( i = 0 ; i < 5 ; i ++ ) if ( s -> frames [ i ] . tf . f -> data [ 0 ] && & s -> frames [ i ] != prev_frame && & s -> frames [ i ] != s -> framep [ VP56_FRAME_PREVIOUS ] && & s -> frames [ i ] != s -> framep [ VP56_FRAME_GOLDEN ] && & s -> frames [ i ] != s -> framep [ VP56_FRAME_GOLDEN2 ] ) vp8_release_frame ( s , & s -> frames [ i ] ) ; curframe = s -> framep [ VP56_FRAME_CURRENT ] = vp8_find_free_buffer ( s ) ; if ( ! s -> colorspace ) avctx -> colorspace = AVCOL_SPC_BT470BG ; if ( s -> fullrange ) avctx -> color_range = AVCOL_RANGE_JPEG ; else avctx -> color_range = AVCOL_RANGE_MPEG ; if ( ! s -> keyframe && ( ! s -> framep [ VP56_FRAME_PREVIOUS ] || ! s -> framep [ VP56_FRAME_GOLDEN ] || ! s -> framep [ VP56_FRAME_GOLDEN2 ] ) ) { av_log ( avctx , AV_LOG_WARNING , \"Discarding<S2SV_blank>interframe<S2SV_blank>without<S2SV_blank>a<S2SV_blank>prior<S2SV_blank>keyframe!\\\\n\" ) ; ret = AVERROR_INVALIDDATA ; goto err ; } curframe -> tf . f -> key_frame = s -> keyframe ; curframe -> tf . f -> pict_type = s -> keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P ; if ( ( ret = vp8_alloc_frame ( s , curframe , referenced ) ) < 0 ) goto err ; if ( s -> update_altref != VP56_FRAME_NONE ) s -> next_framep [ VP56_FRAME_GOLDEN2 ] = s -> framep [ s -> update_altref ] ; else s -> next_framep [ VP56_FRAME_GOLDEN2 ] = s -> framep [ VP56_FRAME_GOLDEN2 ] ; if ( s -> update_golden != VP56_FRAME_NONE ) s -> next_framep [ VP56_FRAME_GOLDEN ] = s -> framep [ s -> update_golden ] ; else s -> next_framep [ VP56_FRAME_GOLDEN ] = s -> framep [ VP56_FRAME_GOLDEN ] ; if ( s -> update_last ) s -> next_framep [ VP56_FRAME_PREVIOUS ] = curframe ; else s -> next_framep [ VP56_FRAME_PREVIOUS ] = s -> framep [ VP56_FRAME_PREVIOUS ] ; s -> next_framep [ VP56_FRAME_CURRENT ] = curframe ; if ( avctx -> codec -> update_thread_context ) ff_thread_finish_setup ( avctx ) ; s -> linesize = curframe -> tf . f -> linesize [ 0 ] ; s -> uvlinesize = curframe -> tf . f -> linesize [ 1 ] ; memset ( s -> top_nnz , 0 , s -> mb_width * sizeof ( * s -> top_nnz ) ) ; if ( ! s -> mb_layout ) memset ( s -> macroblocks + s -> mb_height * 2 - 1 , 0 , ( s -> mb_width + 1 ) * sizeof ( * s -> macroblocks ) ) ; if ( ! s -> mb_layout && s -> keyframe ) memset ( s -> intra4x4_pred_mode_top , DC_PRED , s -> mb_width * 4 ) ; memset ( s -> ref_count , 0 , sizeof ( s -> ref_count ) ) ; if ( s -> mb_layout == 1 ) { if ( prev_frame && s -> segmentation . enabled && ! s -> segmentation . update_map ) ff_thread_await_progress ( & prev_frame -> tf , 1 , 0 ) ; if ( is_vp7 ) vp7_decode_mv_mb_modes ( avctx , curframe , prev_frame ) ; else vp8_decode_mv_mb_modes ( avctx , curframe , prev_frame ) ; } if ( avctx -> active_thread_type == FF_THREAD_FRAME ) num_jobs = 1 ; else num_jobs = FFMIN ( s -> num_coeff_partitions , avctx -> thread_count ) ; s -> num_jobs = num_jobs ; s -> curframe = curframe ; s -> prev_frame = prev_frame ; s -> mv_bounds . mv_min . y = - MARGIN ; s -> mv_bounds . mv_max . y = ( ( s -> mb_height - 1 ) << 6 ) + MARGIN ; for ( i = 0 ; i < MAX_THREADS ; i ++ ) { VP8ThreadData * td = & s -> thread_data [ i ] ; atomic_init ( & td -> thread_mb_pos , 0 ) ; atomic_init ( & td -> wait_mb_pos , INT_MAX ) ; } if ( is_vp7 ) avctx -> execute2 ( avctx , vp7_decode_mb_row_sliced , s -> thread_data , NULL , num_jobs ) ; else avctx -> execute2 ( avctx , vp8_decode_mb_row_sliced , s -> thread_data , NULL , num_jobs ) ; ff_thread_report_progress ( & curframe -> tf , INT_MAX , 0 ) ; memcpy ( & s -> framep [ 0 ] , & s -> next_framep [ 0 ] , sizeof ( s -> framep [ 0 ] ) * 4 ) ; skip_decode : if ( ! s -> update_probabilities ) s -> prob [ 0 ] = s -> prob [ 1 ] ; if ( ! s -> invisible ) { if ( ( ret = av_frame_ref ( data , curframe -> tf . f ) ) < 0 ) return ret ; * got_frame = 1 ; } return avpkt -> size ; err : memcpy ( & s -> next_framep [ 0 ] , & s -> framep [ 0 ] , sizeof ( s -> framep [ 0 ] ) * 4 ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * prev_frame ; av_assert0 ( avctx -> pix_fmt == AV_PIX_FMT_YUVA420P || avctx -> pix_fmt == AV_PIX_FMT_YUV420P )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 static void process_tree ( struct rev_info * revs , struct tree * tree , show_object_fn show , struct strbuf * base , const char * name , void * cb_data ) { struct object * obj = & tree -> object ; struct tree_desc desc ; struct name_entry entry ; enum interesting match = revs -> diffopt . pathspec . nr == 0 ? all_entries_interesting : entry_not_interesting ; int baselen = base -> len ; if ( ! revs -> tree_objects ) return ; if ( ! obj ) die ( \"bad<S2SV_blank>tree<S2SV_blank>object\" ) ; if ( obj -> flags & ( UNINTERESTING | SEEN ) ) return ; if ( parse_tree_gently ( tree , revs -> ignore_missing_links ) < 0 ) { if ( revs -> ignore_missing_links ) return ; die ( \"bad<S2SV_blank>tree<S2SV_blank>object<S2SV_blank>%s\" , oid_to_hex ( & obj -> oid ) ) ; } obj -> flags |= SEEN ; <S2SV_StartBug> show ( obj , base , name , cb_data ) ; <S2SV_EndBug> strbuf_addstr ( base , name ) ; if ( base -> len ) strbuf_addch ( base , '/' ) ; init_tree_desc ( & desc , tree -> buffer , tree -> size ) ; while ( tree_entry ( & desc , & entry ) ) { if ( match != all_entries_interesting ) { match = tree_entry_interesting ( & entry , base , 0 , & revs -> diffopt . pathspec ) ; if ( match == all_entries_not_interesting ) break ; if ( match == entry_not_interesting ) continue ; } if ( S_ISDIR ( entry . mode ) ) process_tree ( revs , lookup_tree ( entry . sha1 ) , show , base , entry . path , cb_data ) ; else if ( S_ISGITLINK ( entry . mode ) ) process_gitlink ( revs , entry . sha1 , show , base , entry . path , cb_data ) ; else process_blob ( revs , lookup_blob ( entry . sha1 ) , show , base , entry . path , cb_data ) ; } strbuf_setlen ( base , baselen ) ; free_tree_buffer ( tree ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= SEEN ; strbuf_addstr ( base , name ) ; <S2SV_ModStart> obj , base -> buf , cb_data <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int http_connect ( URLContext * h , const char * path , const char * local_path , const char * hoststr , const char * auth , const char * proxyauth , int * new_location ) { HTTPContext * s = h -> priv_data ; int post , err ; char headers [ HTTP_HEADERS_SIZE ] = \"\" ; char * authstr = NULL , * proxyauthstr = NULL ; <S2SV_StartBug> int64_t off = s -> off ; <S2SV_EndBug> int len = 0 ; const char * method ; int send_expect_100 = 0 ; post = h -> flags & AVIO_FLAG_WRITE ; if ( s -> post_data ) { post = 1 ; s -> chunked_post = 0 ; } if ( s -> method ) method = s -> method ; else method = post ? \"POST\" : \"GET\" ; authstr = ff_http_auth_create_response ( & s -> auth_state , auth , local_path , method ) ; proxyauthstr = ff_http_auth_create_response ( & s -> proxy_auth_state , proxyauth , local_path , method ) ; if ( post && ! s -> post_data ) { send_expect_100 = s -> send_expect_100 ; if ( auth && * auth && s -> auth_state . auth_type == HTTP_AUTH_NONE && s -> http_code != 401 ) send_expect_100 = 1 ; } # if FF_API_HTTP_USER_AGENT if ( strcmp ( s -> user_agent_deprecated , DEFAULT_USER_AGENT ) ) { av_log ( s , AV_LOG_WARNING , \"the<S2SV_blank>user-agent<S2SV_blank>option<S2SV_blank>is<S2SV_blank>deprecated,<S2SV_blank>please<S2SV_blank>use<S2SV_blank>user_agent<S2SV_blank>option\\\\n\" ) ; s -> user_agent = av_strdup ( s -> user_agent_deprecated ) ; } # endif if ( ! has_header ( s -> headers , \"\\\\r\\\\nUser-Agent:<S2SV_blank>\" ) ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"User-Agent:<S2SV_blank>%s\\\\r\\\\n\" , s -> user_agent ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nAccept:<S2SV_blank>\" ) ) len += av_strlcpy ( headers + len , \"Accept:<S2SV_blank>*/*\\\\r\\\\n\" , sizeof ( headers ) - len ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nRange:<S2SV_blank>\" ) && ! post && ( s -> off > 0 || s -> end_off || s -> seekable == - 1 ) ) { len += av_strlcatf ( headers + len , sizeof ( headers ) - len , <S2SV_StartBug> \"Range:<S2SV_blank>bytes=%\" PRId64 \"-\" , s -> off ) ; <S2SV_EndBug> if ( s -> end_off ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"%\" PRId64 , s -> end_off - 1 ) ; len += av_strlcpy ( headers + len , \"\\\\r\\\\n\" , sizeof ( headers ) - len ) ; } if ( send_expect_100 && ! has_header ( s -> headers , \"\\\\r\\\\nExpect:<S2SV_blank>\" ) ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Expect:<S2SV_blank>100-continue\\\\r\\\\n\" ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nConnection:<S2SV_blank>\" ) ) { if ( s -> multiple_requests ) len += av_strlcpy ( headers + len , \"Connection:<S2SV_blank>keep-alive\\\\r\\\\n\" , sizeof ( headers ) - len ) ; else len += av_strlcpy ( headers + len , \"Connection:<S2SV_blank>close\\\\r\\\\n\" , sizeof ( headers ) - len ) ; } if ( ! has_header ( s -> headers , \"\\\\r\\\\nHost:<S2SV_blank>\" ) ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Host:<S2SV_blank>%s\\\\r\\\\n\" , hoststr ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nContent-Length:<S2SV_blank>\" ) && s -> post_data ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Content-Length:<S2SV_blank>%d\\\\r\\\\n\" , s -> post_datalen ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nContent-Type:<S2SV_blank>\" ) && s -> content_type ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Content-Type:<S2SV_blank>%s\\\\r\\\\n\" , s -> content_type ) ; if ( ! has_header ( s -> headers , \"\\\\r\\\\nCookie:<S2SV_blank>\" ) && s -> cookies ) { char * cookies = NULL ; if ( ! get_cookies ( s , & cookies , path , hoststr ) && cookies ) { len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Cookie:<S2SV_blank>%s\\\\r\\\\n\" , cookies ) ; av_free ( cookies ) ; } } if ( ! has_header ( s -> headers , \"\\\\r\\\\nIcy-MetaData:<S2SV_blank>\" ) && s -> icy ) len += av_strlcatf ( headers + len , sizeof ( headers ) - len , \"Icy-MetaData:<S2SV_blank>%d\\\\r\\\\n\" , 1 ) ; if ( s -> headers ) av_strlcpy ( headers + len , s -> headers , sizeof ( headers ) - len ) ; snprintf ( s -> buffer , sizeof ( s -> buffer ) , \"%s<S2SV_blank>%s<S2SV_blank>HTTP/1.1\\\\r\\\\n\" \"%s\" \"%s\" \"%s\" \"%s%s\" \"\\\\r\\\\n\" , method , path , post && s -> chunked_post ? \"Transfer-Encoding:<S2SV_blank>chunked\\\\r\\\\n\" : \"\" , headers , authstr ? authstr : \"\" , proxyauthstr ? \"Proxy-\" : \"\" , proxyauthstr ? proxyauthstr : \"\" ) ; av_log ( h , AV_LOG_DEBUG , \"request:<S2SV_blank>%s\\\\n\" , s -> buffer ) ; if ( ( err = ffurl_write ( s -> hd , s -> buffer , strlen ( s -> buffer ) ) ) < 0 ) goto done ; if ( s -> post_data ) if ( ( err = ffurl_write ( s -> hd , s -> post_data , s -> post_datalen ) ) < 0 ) goto done ; s -> buf_ptr = s -> buffer ; s -> buf_end = s -> buffer ; s -> line_count = 0 ; s -> off = 0 ; s -> icy_data_read = 0 ; <S2SV_StartBug> s -> filesize = - 1 ; <S2SV_EndBug> s -> willclose = 0 ; s -> end_chunked_post = 0 ; s -> end_header = 0 ; if ( post && ! s -> post_data && ! send_expect_100 ) { s -> http_code = 200 ; err = 0 ; goto done ; } err = http_read_header ( h , new_location ) ; if ( err < 0 ) goto done ; if ( * new_location ) s -> off = off ; err = ( off == s -> off ) ? 0 : - 1 ; done : av_freep ( & authstr ) ; av_freep ( & proxyauthstr ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; uint64_t <S2SV_ModEnd> off = s <S2SV_ModStart> len , \"Range:<S2SV_blank>bytes=%\" PRIu64 <S2SV_ModEnd> \"-\" , s <S2SV_ModStart> -> filesize = UINT64_MAX <S2SV_ModEnd> ; s ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7515\n\n```\nCWE-125 static Image * ReadRLEImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define SkipLinesOp 0x01 # define SetColorOp 0x02 # define SkipPixelsOp 0x03 # define ByteDataOp 0x05 # define RunDataOp 0x06 # define EOFOp 0x07 char magick [ 12 ] ; Image * image ; int opcode , operand , status ; MagickStatusType flags ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; Quantum index ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bits_per_pixel , map_length , number_colormaps , <S2SV_StartBug> number_planes , <S2SV_EndBug> one , offset , pixel_info_length ; ssize_t count , y ; unsigned char background_color [ 256 ] , * colormap , pixel , plane , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 2 ) || ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { image -> page . x = ReadBlobLSBShort ( image ) ; image -> page . y = ReadBlobLSBShort ( image ) ; image -> columns = ReadBlobLSBShort ( image ) ; image -> rows = ReadBlobLSBShort ( image ) ; flags = ( MagickStatusType ) ReadBlobByte ( image ) ; image -> alpha_trait = flags & 0x04 ? BlendPixelTrait : UndefinedPixelTrait ; number_planes = ( size_t ) ReadBlobByte ( image ) ; bits_per_pixel = ( size_t ) ReadBlobByte ( image ) ; number_colormaps = ( size_t ) ReadBlobByte ( image ) ; map_length = ( unsigned char ) ReadBlobByte ( image ) ; if ( map_length >= 64 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; one = 1 ; map_length = one << map_length ; if ( ( number_planes == 0 ) || ( number_planes == 2 ) || ( bits_per_pixel != 8 ) || ( image -> columns == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( flags & 0x02 ) { for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) background_color [ i ] = 0 ; ( void ) ReadBlobByte ( image ) ; } else { p = background_color ; for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) * p ++ = ( unsigned char ) ReadBlobByte ( image ) ; } if ( ( number_planes & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } colormap = ( unsigned char * ) NULL ; if ( number_colormaps != 0 ) { colormap = ( unsigned char * ) AcquireQuantumMemory ( number_colormaps , 3 * map_length * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; for ( i = 0 ; i < ( ssize_t ) number_colormaps ; i ++ ) for ( x = 0 ; x < ( ssize_t ) map_length ; x ++ ) * p ++ = ( unsigned char ) ScaleShortToQuantum ( ReadBlobLSBShort ( image ) ) ; } if ( ( flags & 0x08 ) != 0 ) { char * comment ; size_t length ; length = ReadBlobLSBShort ( image ) ; if ( length != 0 ) { comment = ( char * ) AcquireQuantumMemory ( length , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , length - 1 , ( unsigned char * ) comment ) ; comment [ length - 1 ] = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; if ( ( length & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; } } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) number_planes ++ ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; <S2SV_StartBug> if ( ( number_pixels * number_planes ) != ( size_t ) ( number_pixels * number_planes ) ) <S2SV_EndBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> pixel_info_length = image -> columns * image -> rows * MagickMax ( number_planes , 4 ) ; <S2SV_EndBug> pixel_info = AcquireVirtualMemory ( pixel_info_length , sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( flags & 0x01 ) && ! ( flags & 0x02 ) ) { ssize_t j ; p = pixels ; for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { if ( image -> alpha_trait == UndefinedPixelTrait ) for ( j = 0 ; j < ( ssize_t ) number_planes ; j ++ ) * p ++ = background_color [ j ] ; else { for ( j = 0 ; j < ( ssize_t ) ( number_planes - 1 ) ; j ++ ) * p ++ = background_color [ j ] ; * p ++ = 0 ; } } } plane = 0 ; x = 0 ; y = 0 ; opcode = ReadBlobByte ( image ) ; do { switch ( opcode & 0x3f ) { case SkipLinesOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ( int ) ReadBlobLSBShort ( image ) ; x = 0 ; y += operand ; break ; } case SetColorOp : { operand = ReadBlobByte ( image ) ; plane = ( unsigned char ) operand ; if ( plane == 255 ) plane = ( unsigned char ) ( number_planes - 1 ) ; x = 0 ; break ; } case SkipPixelsOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ( int ) ReadBlobLSBShort ( image ) ; x += operand ; break ; } case ByteDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ( int ) ReadBlobLSBShort ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } if ( operand & 0x01 ) ( void ) ReadBlobByte ( image ) ; x += operand ; break ; } case RunDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ( int ) ReadBlobLSBShort ( image ) ; pixel = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) ReadBlobByte ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } x += operand ; break ; } default : break ; } opcode = ReadBlobByte ( image ) ; } while ( ( ( opcode & 0x3f ) != EOFOp ) && ( opcode != EOF ) ) ; if ( number_colormaps != 0 ) { MagickStatusType mask ; mask = ( MagickStatusType ) ( map_length - 1 ) ; p = pixels ; x = ( ssize_t ) number_planes ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { if ( IsValidColormapIndex ( image , * p & mask , & index , exception ) == MagickFalse ) break ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } else if ( ( number_planes >= 3 ) && ( number_colormaps >= 3 ) ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) for ( x = 0 ; x < ( ssize_t ) number_planes ; x ++ ) { if ( IsValidColormapIndex ( image , ( size_t ) ( x * map_length + ( * p & mask ) ) , & index , exception ) == MagickFalse ) break ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } if ( ( i < ( ssize_t ) number_pixels ) || ( x < ( ssize_t ) number_planes ) ) { colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } } if ( number_planes >= 3 ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( number_colormaps == 0 ) map_length = 256 ; if ( AcquireImageColormap ( image , map_length , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; } else if ( number_colormaps > 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * ( p + map_length ) ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * ( p + map_length * 2 ) ) ; p ++ ; } p = pixels ; if ( image -> alpha_trait == UndefinedPixelTrait ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } else { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( IsValidColormapIndex ( image , ( ssize_t ) * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . red ) , q ) ; if ( IsValidColormapIndex ( image , ( ssize_t ) * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . green ) , q ) ; if ( IsValidColormapIndex ( image , ( ssize_t ) * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . blue ) , q ) ; SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } image -> colormap = ( PixelInfo * ) RelinquishMagickMemory ( image -> colormap ) ; image -> storage_class = DirectClass ; image -> colors = 0 ; } } if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; ( void ) ReadBlobByte ( image ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> number_colormaps , number_planes , number_planes_filled <S2SV_ModStart> -> rows ; number_planes_filled = ( number_planes % 2 == 0 ) ? number_planes : number_planes + 1 ; <S2SV_ModStart> ( number_pixels * number_planes_filled <S2SV_ModEnd> ) != ( <S2SV_ModStart> ( number_pixels * number_planes_filled <S2SV_ModEnd> ) ) ThrowReaderException <S2SV_ModStart> -> rows * number_planes_filled <S2SV_ModEnd> ; pixel_info =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10093\n\n```\nCWE-119 static void cpStripToTile ( uint8 * out , uint8 * in , <S2SV_StartBug> uint32 rows , uint32 cols , int outskew , int inskew ) <S2SV_EndBug> { while ( rows -- > 0 ) { uint32 j = cols ; while ( j -- > 0 ) * out ++ = * in ++ ; out += outskew ; in += inskew ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int outskew , int64 <S2SV_ModEnd> inskew ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12321\n\n```\nCWE-125 static int java_switch_op ( RAnal * anal , RAnalOp * op , ut64 addr , const ut8 * data , int len ) { ut8 op_byte = data [ 0 ] ; ut64 offset = addr - java_get_method_start ( ) ; ut8 pos = ( offset + 1 ) % 4 ? 1 + 4 - ( offset + 1 ) % 4 : 1 ; if ( op_byte == 0xaa ) { <S2SV_StartBug> if ( pos + 8 > len ) { <S2SV_EndBug> return op -> size ; } <S2SV_StartBug> int min_val = ( ut32 ) ( UINT ( data , pos + 4 ) ) , <S2SV_EndBug> max_val = ( ut32 ) ( UINT ( data , pos + 8 ) ) ; ut32 default_loc = ( ut32 ) ( UINT ( data , pos ) ) , cur_case = 0 ; op -> switch_op = r_anal_switch_op_new ( addr , min_val , default_loc ) ; RAnalCaseOp * caseop = NULL ; pos += 12 ; if ( max_val > min_val && ( ( max_val - min_val ) < ( UT16_MAX / 4 ) ) ) { for ( cur_case = 0 ; cur_case <= max_val - min_val ; pos += 4 , cur_case ++ ) { if ( pos + 4 >= len ) { break ; } int offset = ( int ) ( ut32 ) ( R_BIN_JAVA_UINT ( data , pos ) ) ; caseop = r_anal_switch_op_add_case ( op -> switch_op , addr + pos , cur_case + min_val , addr + offset ) ; if ( caseop ) { caseop -> bb_ref_to = addr + offset ; caseop -> bb_ref_from = addr ; } } } else { eprintf ( \"Invalid<S2SV_blank>switch<S2SV_blank>boundaries<S2SV_blank>at<S2SV_blank>0x%\" PFMT64x \"\\\\n\" , addr ) ; } } op -> size = pos ; return op -> size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pos + 8 + 8 <S2SV_ModStart> size ; } const <S2SV_ModStart> 4 ) ) ; const int <S2SV_ModEnd> max_val = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13000\n\n```\nCWE-125 u_int ieee802_15_4_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int caplen = h -> caplen ; u_int hdrlen ; uint16_t fc ; uint8_t seq ; uint16_t panid = 0 ; if ( caplen < 3 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return caplen ; } hdrlen = 3 ; fc = EXTRACT_LE_16BITS ( p ) ; seq = EXTRACT_LE_8BITS ( p + 2 ) ; p += 3 ; caplen -= 3 ; ND_PRINT ( ( ndo , \"IEEE<S2SV_blank>802.15.4<S2SV_blank>%s<S2SV_blank>packet<S2SV_blank>\" , ftypes [ FC_FRAME_TYPE ( fc ) ] ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"seq<S2SV_blank>%02x<S2SV_blank>\" , seq ) ) ; switch ( FC_DEST_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( fc & FC_PAN_ID_COMPRESSION ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>destination<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return hdrlen ; case FC_ADDRESSING_MODE_SHORT : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p + 2 ) ) ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; break ; case FC_ADDRESSING_MODE_LONG : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_StartBug> ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p + 2 ) ) ) ; <S2SV_EndBug> p += 8 ; caplen -= 8 ; hdrlen += 8 ; break ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<<S2SV_blank>\" ) ) ; switch ( FC_SRC_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>source<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return 0 ; case FC_ADDRESSING_MODE_SHORT : if ( ! ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p ) ) ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; break ; case FC_ADDRESSING_MODE_LONG : if ( ! ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; p += 8 ; caplen -= 8 ; hdrlen += 8 ; break ; } if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , caplen ) ; return hdrlen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ndo , p <S2SV_ModEnd> ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2186\n\n```\nCWE-000 static int powermate_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct usb_device * udev = interface_to_usbdev ( intf ) ; struct usb_host_interface * interface ; struct usb_endpoint_descriptor * endpoint ; struct powermate_device * pm ; struct input_dev * input_dev ; int pipe , maxp ; int error = - ENOMEM ; <S2SV_StartBug> interface = intf -> cur_altsetting ; <S2SV_EndBug> endpoint = & interface -> endpoint [ 0 ] . desc ; if ( ! usb_endpoint_is_int_in ( endpoint ) ) return - EIO ; usb_control_msg ( udev , usb_sndctrlpipe ( udev , 0 ) , 0x0a , USB_TYPE_CLASS | USB_RECIP_INTERFACE , 0 , interface -> desc . bInterfaceNumber , NULL , 0 , USB_CTRL_SET_TIMEOUT ) ; pm = kzalloc ( sizeof ( struct powermate_device ) , GFP_KERNEL ) ; input_dev = input_allocate_device ( ) ; if ( ! pm || ! input_dev ) goto fail1 ; if ( powermate_alloc_buffers ( udev , pm ) ) goto fail2 ; pm -> irq = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! pm -> irq ) goto fail2 ; pm -> config = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! pm -> config ) goto fail3 ; pm -> udev = udev ; pm -> intf = intf ; pm -> input = input_dev ; usb_make_path ( udev , pm -> phys , sizeof ( pm -> phys ) ) ; strlcat ( pm -> phys , \"/input0\" , sizeof ( pm -> phys ) ) ; spin_lock_init ( & pm -> lock ) ; switch ( le16_to_cpu ( udev -> descriptor . idProduct ) ) { case POWERMATE_PRODUCT_NEW : input_dev -> name = pm_name_powermate ; break ; case POWERMATE_PRODUCT_OLD : input_dev -> name = pm_name_soundknob ; break ; default : input_dev -> name = pm_name_soundknob ; printk ( KERN_WARNING \"powermate:<S2SV_blank>unknown<S2SV_blank>product<S2SV_blank>id<S2SV_blank>%04x\\\\n\" , le16_to_cpu ( udev -> descriptor . idProduct ) ) ; } input_dev -> phys = pm -> phys ; usb_to_input_id ( udev , & input_dev -> id ) ; input_dev -> dev . parent = & intf -> dev ; input_set_drvdata ( input_dev , pm ) ; input_dev -> event = powermate_input_event ; input_dev -> evbit [ 0 ] = BIT_MASK ( EV_KEY ) | BIT_MASK ( EV_REL ) | BIT_MASK ( EV_MSC ) ; input_dev -> keybit [ BIT_WORD ( BTN_0 ) ] = BIT_MASK ( BTN_0 ) ; input_dev -> relbit [ BIT_WORD ( REL_DIAL ) ] = BIT_MASK ( REL_DIAL ) ; input_dev -> mscbit [ BIT_WORD ( MSC_PULSELED ) ] = BIT_MASK ( MSC_PULSELED ) ; pipe = usb_rcvintpipe ( udev , endpoint -> bEndpointAddress ) ; maxp = usb_maxpacket ( udev , pipe , usb_pipeout ( pipe ) ) ; if ( maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX ) { printk ( KERN_WARNING \"powermate:<S2SV_blank>Expected<S2SV_blank>payload<S2SV_blank>of<S2SV_blank>%d--%d<S2SV_blank>bytes,<S2SV_blank>found<S2SV_blank>%d<S2SV_blank>bytes!\\\\n\" , POWERMATE_PAYLOAD_SIZE_MIN , POWERMATE_PAYLOAD_SIZE_MAX , maxp ) ; maxp = POWERMATE_PAYLOAD_SIZE_MAX ; } usb_fill_int_urb ( pm -> irq , udev , pipe , pm -> data , maxp , powermate_irq , pm , endpoint -> bInterval ) ; pm -> irq -> transfer_dma = pm -> data_dma ; pm -> irq -> transfer_flags |= URB_NO_TRANSFER_DMA_MAP ; if ( usb_submit_urb ( pm -> irq , GFP_KERNEL ) ) { error = - EIO ; goto fail4 ; } error = input_register_device ( pm -> input ) ; if ( error ) goto fail5 ; pm -> requires_update = UPDATE_PULSE_ASLEEP | UPDATE_PULSE_AWAKE | UPDATE_PULSE_MODE | UPDATE_STATIC_BRIGHTNESS ; powermate_pulse_led ( pm , 0x80 , 255 , 0 , 1 , 0 ) ; usb_set_intfdata ( intf , pm ) ; return 0 ; fail5 : usb_kill_urb ( pm -> irq ) ; fail4 : usb_free_urb ( pm -> config ) ; fail3 : usb_free_urb ( pm -> irq ) ; fail2 : powermate_free_buffers ( udev , pm ) ; fail1 : input_free_device ( input_dev ) ; kfree ( pm ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> intf -> cur_altsetting ; if ( interface -> desc . bNumEndpoints < 1 ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 int jas_stream_write ( jas_stream_t * stream , const void * buf , int cnt ) { int n ; <S2SV_StartBug> const char * bufptr ; <S2SV_EndBug> bufptr = buf ; n = 0 ; while ( n < cnt ) { if ( jas_stream_putc ( stream , * bufptr ) == EOF ) { return n ; } ++ bufptr ; ++ n ; } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * bufptr ; if ( cnt < 0 ) { jas_deprecated ( \"negative<S2SV_blank>count<S2SV_blank>for<S2SV_blank>jas_stream_write\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11046\n\n```\nCWE-119 <S2SV_StartBug> static void update_read_synchronize ( rdpUpdate * update , wStream * s ) <S2SV_EndBug> { WINPR_UNUSED ( update ) ; <S2SV_StartBug> Stream_Seek_UINT16 ( s ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> update_read_synchronize ( rdpUpdate <S2SV_ModStart> update ) ; return Stream_SafeSeek ( s , 2 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14882\n\n```\nCWE-125 static void icmp6_rrenum_print ( netdissect_options * ndo , const u_char * bp , const u_char * ep ) { const struct icmp6_router_renum * rr6 ; const char * cp ; const struct rr_pco_match * match ; const struct rr_pco_use * use ; char hbuf [ NI_MAXHOST ] ; int n ; if ( ep < bp ) return ; rr6 = ( const struct icmp6_router_renum * ) bp ; cp = ( const char * ) ( rr6 + 1 ) ; ND_TCHECK ( rr6 -> rr_reserved ) ; switch ( rr6 -> rr_code ) { case ICMP6_ROUTER_RENUMBERING_COMMAND : ND_PRINT ( ( ndo , \"router<S2SV_blank>renum:<S2SV_blank>command\" ) ) ; break ; case ICMP6_ROUTER_RENUMBERING_RESULT : ND_PRINT ( ( ndo , \"router<S2SV_blank>renum:<S2SV_blank>result\" ) ) ; break ; case ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET : ND_PRINT ( ( ndo , \"router<S2SV_blank>renum:<S2SV_blank>sequence<S2SV_blank>number<S2SV_blank>reset\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"router<S2SV_blank>renum:<S2SV_blank>code-#%d\" , rr6 -> rr_code ) ) ; break ; } ND_PRINT ( ( ndo , \",<S2SV_blank>seq=%u\" , EXTRACT_32BITS ( & rr6 -> rr_seqnum ) ) ) ; if ( ndo -> ndo_vflag ) { # define F ( x , y ) ( ( rr6 -> rr_flags ) & ( x ) ? ( y ) : \"\" ) ND_PRINT ( ( ndo , \"[\" ) ) ; if ( rr6 -> rr_flags ) { ND_PRINT ( ( ndo , \"%s%s%s%s%s,\" , F ( ICMP6_RR_FLAGS_TEST , \"T\" ) , F ( ICMP6_RR_FLAGS_REQRESULT , \"R\" ) , F ( ICMP6_RR_FLAGS_FORCEAPPLY , \"A\" ) , F ( ICMP6_RR_FLAGS_SPECSITE , \"S\" ) , F ( ICMP6_RR_FLAGS_PREVDONE , \"P\" ) ) ) ; } ND_PRINT ( ( ndo , \"seg=%u,\" , rr6 -> rr_segnum ) ) ; ND_PRINT ( ( ndo , \"maxdelay=%u\" , EXTRACT_16BITS ( & rr6 -> rr_maxdelay ) ) ) ; if ( rr6 -> rr_reserved ) ND_PRINT ( ( ndo , \"rsvd=0x%x\" , EXTRACT_32BITS ( & rr6 -> rr_reserved ) ) ) ; ND_PRINT ( ( ndo , \"]\" ) ) ; # undef F } if ( rr6 -> rr_code == ICMP6_ROUTER_RENUMBERING_COMMAND ) { match = ( const struct rr_pco_match * ) cp ; cp = ( const char * ) ( match + 1 ) ; ND_TCHECK ( match -> rpm_prefix ) ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"match(\" ) ) ; switch ( match -> rpm_code ) { case RPM_PCO_ADD : ND_PRINT ( ( ndo , \"add\" ) ) ; break ; case RPM_PCO_CHANGE : ND_PRINT ( ( ndo , \"change\" ) ) ; break ; case RPM_PCO_SETGLOBAL : ND_PRINT ( ( ndo , \"setglobal\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"#%u\" , match -> rpm_code ) ) ; break ; } if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \",ord=%u\" , match -> rpm_ordinal ) ) ; ND_PRINT ( ( ndo , \",min=%u\" , match -> rpm_minlen ) ) ; ND_PRINT ( ( ndo , \",max=%u\" , match -> rpm_maxlen ) ) ; } if ( addrtostr6 ( & match -> rpm_prefix , hbuf , sizeof ( hbuf ) ) ) ND_PRINT ( ( ndo , \",%s/%u\" , hbuf , match -> rpm_matchlen ) ) ; else ND_PRINT ( ( ndo , \",?/%u\" , match -> rpm_matchlen ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; n = match -> rpm_len - 3 ; if ( n % 4 ) goto trunc ; n /= 4 ; while ( n -- > 0 ) { use = ( const struct rr_pco_use * ) cp ; cp = ( const char * ) ( use + 1 ) ; ND_TCHECK ( use -> rpu_prefix ) ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"use(\" ) ) ; if ( use -> rpu_flags ) { # define F ( x , y ) ( ( use -> rpu_flags ) & ( x ) ? ( y ) : \"\" ) ND_PRINT ( ( ndo , \"%s%s,\" , F ( ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME , \"V\" ) , F ( ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME , \"P\" ) ) ) ; # undef F } if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"mask=0x%x,\" , use -> rpu_ramask ) ) ; ND_PRINT ( ( ndo , \"raflags=0x%x,\" , use -> rpu_raflags ) ) ; if ( ~ use -> rpu_vltime == 0 ) ND_PRINT ( ( ndo , \"vltime=infty,\" ) ) ; else ND_PRINT ( ( ndo , \"vltime=%u,\" , EXTRACT_32BITS ( & use -> rpu_vltime ) ) ) ; if ( ~ use -> rpu_pltime == 0 ) ND_PRINT ( ( ndo , \"pltime=infty,\" ) ) ; else ND_PRINT ( ( ndo , \"pltime=%u,\" , EXTRACT_32BITS ( & use -> rpu_pltime ) ) ) ; } if ( addrtostr6 ( & use -> rpu_prefix , hbuf , sizeof ( hbuf ) ) ) ND_PRINT ( ( ndo , \"%s/%u/%u\" , hbuf , use -> rpu_uselen , use -> rpu_keeplen ) ) ; else ND_PRINT ( ( ndo , \"?/%u/%u\" , use -> rpu_uselen , use -> rpu_keeplen ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; } } return ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"[|icmp6]\" ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"%s\" , icmp6_tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7472\n\n```\nCWE-404 static int install_thread_keyring ( void ) { struct cred * new ; int ret ; new = prepare_creds ( ) ; if ( ! new ) <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> BUG_ON ( new -> thread_keyring ) ; ret = install_thread_keyring_to_cred ( new ) ; if ( ret < 0 ) { abort_creds ( new ) ; return ret ; } return commit_creds ( new ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - ENOMEM <S2SV_ModEnd> ; ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6262\n\n```\nCWE-134 int bad_format_imginfo ( char * fmt ) { <S2SV_StartBug> char * ptr ; <S2SV_EndBug> int n = 0 ; ptr = fmt ; while ( * ptr != '\\\\0' ) if ( * ptr ++ == '%' ) { if ( * ptr == '\\\\0' ) return 1 ; if ( * ptr == '%' ) ptr ++ ; else if ( * ptr == 's' || * ptr == 'S' ) { n = 1 ; ptr ++ ; } else { if ( * ptr == '<S2SV_blank>' ) ptr ++ ; while ( * ptr >= '0' && * ptr <= '9' ) ptr ++ ; if ( * ptr ++ != 'l' ) return 1 ; if ( * ptr == 'u' ) ptr ++ ; else return 1 ; n ++ ; } } return ( n != 3 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fmt ) { return bad_format_check ( \"^\" SAFE_STRING \"%s\" SAFE_STRING \"%lu\" SAFE_STRING \"%lu\" SAFE_STRING \"$\" , fmt <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int jpg_validate ( jas_stream_t * in ) { <S2SV_StartBug> uchar buf [ JPG_MAGICLEN ] ; <S2SV_EndBug> int i ; int n ; assert ( JAS_STREAM_MAXPUTBACK >= JPG_MAGICLEN ) ; if ( ( n = jas_stream_read ( in , buf , JPG_MAGICLEN ) ) < 0 ) { return - 1 ; } for ( i = n - 1 ; i >= 0 ; -- i ) { if ( jas_stream_ungetc ( in , buf [ i ] ) == EOF ) { return - 1 ; } } if ( n < JPG_MAGICLEN ) { return - 1 ; } if ( buf [ 0 ] != ( JPG_MAGIC >> 8 ) || buf [ 1 ] != ( JPG_MAGIC & 0xff ) ) { return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in ) { jas_uchar <S2SV_ModEnd> buf [ JPG_MAGICLEN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13205\n\n```\nCWE-200 IMPEG2D_ERROR_CODES_T impeg2d_init_video_state ( dec_state_t * ps_dec , e_video_type_t e_video_type ) { if ( e_video_type == MPEG_1_VIDEO ) { ps_dec -> u2_is_mpeg2 = 0 ; ps_dec -> u2_progressive_sequence = 1 ; ps_dec -> u2_intra_dc_precision = 0 ; ps_dec -> u2_picture_structure = FRAME_PICTURE ; ps_dec -> u2_frame_pred_frame_dct = 1 ; ps_dec -> u2_concealment_motion_vectors = 0 ; ps_dec -> u2_q_scale_type = 0 ; ps_dec -> u2_intra_vlc_format = 0 ; ps_dec -> u2_alternate_scan = 0 ; ps_dec -> u2_repeat_first_field = 0 ; ps_dec -> u2_progressive_frame = 1 ; ps_dec -> u2_frame_rate_extension_n = 0 ; ps_dec -> u2_frame_rate_extension_d = 0 ; <S2SV_StartBug> ps_dec -> pf_vld_inv_quant = impeg2d_vld_inv_quant_mpeg1 ; <S2SV_EndBug> } else { ps_dec -> u2_is_mpeg2 = 1 ; ps_dec -> u2_full_pel_forw_vector = 0 ; ps_dec -> u2_forw_f_code = 7 ; ps_dec -> u2_full_pel_back_vector = 0 ; ps_dec -> u2_back_f_code = 7 ; ps_dec -> pf_vld_inv_quant = impeg2d_vld_inv_quant_mpeg2 ; } impeg2d_init_function_ptr ( ps_dec ) ; ps_dec -> u2_frame_height = ALIGN16 ( ps_dec -> u2_vertical_size ) ; ps_dec -> u2_frame_width = ALIGN16 ( ps_dec -> u2_horizontal_size ) ; ps_dec -> u2_num_horiz_mb = ( ps_dec -> u2_horizontal_size + 15 ) >> 4 ; if ( ps_dec -> u2_frame_height > ps_dec -> u2_create_max_height || ps_dec -> u2_frame_width > ps_dec -> u2_create_max_width ) { return IMPEG2D_PIC_SIZE_NOT_SUPPORTED ; } ps_dec -> u2_num_flds_decoded = 0 ; { UWORD32 numer ; UWORD32 denom ; numer = ( UWORD32 ) gau2_impeg2_frm_rate_code [ ps_dec -> u2_frame_rate_code ] [ 1 ] * ( UWORD32 ) ( ps_dec -> u2_frame_rate_extension_d + 1 ) ; denom = ( UWORD32 ) gau2_impeg2_frm_rate_code [ ps_dec -> u2_frame_rate_code ] [ 0 ] * ( UWORD32 ) ( ps_dec -> u2_frame_rate_extension_n + 1 ) ; ps_dec -> u2_framePeriod = ( numer * 1000 * 100 ) / denom ; } if ( VERTICAL_SCAN == ps_dec -> u2_alternate_scan ) { ps_dec -> pu1_inv_scan_matrix = ( UWORD8 * ) gau1_impeg2_inv_scan_vertical ; } else { ps_dec -> pu1_inv_scan_matrix = ( UWORD8 * ) gau1_impeg2_inv_scan_zig_zag ; } return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ps_dec -> u2_forw_f_code = 7 ; ps_dec -> u2_back_f_code = 7 ; ps_dec ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12653\n\n```\nCWE-269 int mwifiex_cmd_append_vsie_tlv ( struct mwifiex_private * priv , u16 vsie_mask , u8 * * buffer ) { int id , ret_len = 0 ; struct mwifiex_ie_types_vendor_param_set * vs_param_set ; if ( ! buffer ) return 0 ; if ( ! ( * buffer ) ) return 0 ; for ( id = 0 ; id < MWIFIEX_MAX_VSIE_NUM ; id ++ ) { if ( priv -> vs_ie [ id ] . mask & vsie_mask ) { vs_param_set = ( struct mwifiex_ie_types_vendor_param_set * ) * buffer ; vs_param_set -> header . type = cpu_to_le16 ( TLV_TYPE_PASSTHROUGH ) ; vs_param_set -> header . len = cpu_to_le16 ( ( ( ( u16 ) priv -> vs_ie [ id ] . ie [ 1 ] ) & 0x00FF ) + 2 ) ; <S2SV_StartBug> memcpy ( vs_param_set -> ie , priv -> vs_ie [ id ] . ie , <S2SV_EndBug> le16_to_cpu ( vs_param_set -> header . len ) ) ; * buffer += le16_to_cpu ( vs_param_set -> header . len ) + sizeof ( struct mwifiex_ie_types_header ) ; ret_len += le16_to_cpu ( vs_param_set -> header . len ) + sizeof ( struct mwifiex_ie_types_header ) ; } } return ret_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) ; if ( le16_to_cpu ( vs_param_set -> header . len ) > MWIFIEX_MAX_VSIE_LEN ) { mwifiex_dbg ( priv -> adapter , ERROR , \"Invalid<S2SV_blank>param<S2SV_blank>length!\\\\n\" ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int decoding_feof ( struct tok_state * tok ) { if ( tok -> decoding_state != STATE_NORMAL ) { return feof ( tok -> fp ) ; } else { PyObject * buf = tok -> decoding_buffer ; if ( buf == NULL ) { <S2SV_StartBug> buf = PyObject_CallObject ( tok -> decoding_readline , NULL ) ; <S2SV_EndBug> if ( buf == NULL ) { error_ret ( tok ) ; return 1 ; } else { tok -> decoding_buffer = buf ; } } return PyObject_Length ( buf ) == 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { buf = _PyObject_CallNoArg <S2SV_ModEnd> ( tok -> <S2SV_ModStart> tok -> decoding_readline <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-400 <S2SV_StartBug> static int match ( Reinst * pc , const char * sp , const char * bol , int flags , Resub * out ) <S2SV_EndBug> { Resub scratch ; <S2SV_StartBug> int i ; <S2SV_EndBug> Rune c ; <S2SV_StartBug> for ( ; ; ) { <S2SV_EndBug> switch ( pc -> opcode ) { case I_END : <S2SV_StartBug> return 1 ; <S2SV_EndBug> case I_JUMP : pc = pc -> x ; break ; case I_SPLIT : scratch = * out ; <S2SV_StartBug> if ( match ( pc -> x , sp , bol , flags , & scratch ) ) { <S2SV_EndBug> * out = scratch ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> } pc = pc -> y ; break ; case I_PLA : <S2SV_StartBug> if ( ! match ( pc -> x , sp , bol , flags , out ) ) <S2SV_EndBug> return 0 ; pc = pc -> y ; break ; case I_NLA : scratch = * out ; <S2SV_StartBug> if ( match ( pc -> x , sp , bol , flags , & scratch ) ) <S2SV_EndBug> return 0 ; pc = pc -> y ; break ; case I_ANYNL : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_ANY : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( isnewline ( c ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_CHAR : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( flags & REG_ICASE ) c = canon ( c ) ; if ( c != pc -> c ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_CCLASS : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( flags & REG_ICASE ) { if ( ! incclasscanon ( pc -> cc , canon ( c ) ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } else { if ( ! incclass ( pc -> cc , c ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } pc = pc + 1 ; break ; case I_NCCLASS : sp += chartorune ( & c , sp ) ; if ( c == 0 ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> if ( flags & REG_ICASE ) { if ( incclasscanon ( pc -> cc , canon ( c ) ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } else { if ( incclass ( pc -> cc , c ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } pc = pc + 1 ; break ; case I_REF : i = out -> sub [ pc -> n ] . ep - out -> sub [ pc -> n ] . sp ; if ( flags & REG_ICASE ) { if ( strncmpcanon ( sp , out -> sub [ pc -> n ] . sp , i ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } else { if ( strncmp ( sp , out -> sub [ pc -> n ] . sp , i ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> } if ( i > 0 ) sp += i ; pc = pc + 1 ; break ; case I_BOL : if ( sp == bol && ! ( flags & REG_NOTBOL ) ) { pc = pc + 1 ; break ; } if ( flags & REG_NEWLINE ) { if ( sp > bol && isnewline ( sp [ - 1 ] ) ) { pc = pc + 1 ; break ; } } <S2SV_StartBug> return 0 ; <S2SV_EndBug> case I_EOL : if ( * sp == 0 ) { pc = pc + 1 ; break ; } if ( flags & REG_NEWLINE ) { if ( isnewline ( * sp ) ) { pc = pc + 1 ; break ; } } <S2SV_StartBug> return 0 ; <S2SV_EndBug> case I_WORD : i = sp > bol && iswordchar ( sp [ - 1 ] ) ; i ^= iswordchar ( sp [ 0 ] ) ; if ( ! i ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_NWORD : i = sp > bol && iswordchar ( sp [ - 1 ] ) ; i ^= iswordchar ( sp [ 0 ] ) ; if ( i ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pc = pc + 1 ; break ; case I_LPAR : out -> sub [ pc -> n ] . sp = sp ; pc = pc + 1 ; break ; case I_RPAR : out -> sub [ pc -> n ] . ep = sp ; pc = pc + 1 ; break ; default : <S2SV_StartBug> return 0 ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Resub * out , int depth <S2SV_ModStart> scratch ; int result ; int <S2SV_ModStart> Rune c ; if ( depth > MAXREC ) return - 1 ; <S2SV_ModStart> I_END : return 0 <S2SV_ModEnd> ; case I_JUMP <S2SV_ModStart> * out ; result = <S2SV_ModEnd> match ( pc <S2SV_ModStart> , & scratch , depth + 1 ) ; if ( result == - 1 ) return - 1 ; if ( result == 0 <S2SV_ModEnd> ) { * <S2SV_ModStart> scratch ; return 0 <S2SV_ModEnd> ; } pc <S2SV_ModStart> case I_PLA : result = <S2SV_ModEnd> match ( pc <S2SV_ModStart> flags , out , depth + 1 ) ; if ( result == - 1 ) return - 1 ; if ( result == 1 ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> * out ; result = <S2SV_ModEnd> match ( pc <S2SV_ModStart> , & scratch , depth + 1 ) ; if ( result == - 1 ) return - 1 ; if ( result == 0 ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> c ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } else <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } pc <S2SV_ModStart> 0 ) return 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } else <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } pc <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } else <S2SV_ModStart> ) ) return 1 <S2SV_ModEnd> ; } if <S2SV_ModStart> } } return 1 <S2SV_ModEnd> ; case I_EOL <S2SV_ModStart> } } return 1 <S2SV_ModEnd> ; case I_WORD <S2SV_ModStart> i ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> i ) return 1 <S2SV_ModEnd> ; pc = <S2SV_ModStart> default : return 1 <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int recv_stream ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t buf_len , int flags ) { struct sock * sk = sock -> sk ; struct tipc_port * tport = tipc_sk_port ( sk ) ; struct sk_buff * buf ; struct tipc_msg * msg ; long timeout ; unsigned int sz ; int sz_to_copy , target , needed ; int sz_copied = 0 ; u32 err ; int res = 0 ; if ( unlikely ( ! buf_len ) ) return - EINVAL ; lock_sock ( sk ) ; if ( unlikely ( ( sock -> state == SS_UNCONNECTED ) ) ) { res = - ENOTCONN ; goto exit ; } <S2SV_StartBug> m -> msg_namelen = 0 ; <S2SV_EndBug> target = sock_rcvlowat ( sk , flags & MSG_WAITALL , buf_len ) ; timeout = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; restart : while ( skb_queue_empty ( & sk -> sk_receive_queue ) ) { if ( sock -> state == SS_DISCONNECTING ) { res = - ENOTCONN ; goto exit ; } if ( timeout <= 0L ) { res = timeout ? timeout : - EWOULDBLOCK ; goto exit ; } release_sock ( sk ) ; timeout = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , tipc_rx_ready ( sock ) , timeout ) ; lock_sock ( sk ) ; } buf = skb_peek ( & sk -> sk_receive_queue ) ; msg = buf_msg ( buf ) ; sz = msg_data_sz ( msg ) ; err = msg_errcode ( msg ) ; if ( ( ! sz ) && ( ! err ) ) { advance_rx_queue ( sk ) ; goto restart ; } if ( sz_copied == 0 ) { set_orig_addr ( m , msg ) ; res = anc_data_recv ( m , msg , tport ) ; if ( res ) goto exit ; } if ( ! err ) { u32 offset = ( u32 ) ( unsigned long ) ( TIPC_SKB_CB ( buf ) -> handle ) ; sz -= offset ; needed = ( buf_len - sz_copied ) ; sz_to_copy = ( sz <= needed ) ? sz : needed ; res = skb_copy_datagram_iovec ( buf , msg_hdr_sz ( msg ) + offset , m -> msg_iov , sz_to_copy ) ; if ( res ) goto exit ; sz_copied += sz_to_copy ; if ( sz_to_copy < sz ) { if ( ! ( flags & MSG_PEEK ) ) TIPC_SKB_CB ( buf ) -> handle = ( void * ) ( unsigned long ) ( offset + sz_to_copy ) ; goto exit ; } } else { if ( sz_copied != 0 ) goto exit ; if ( ( err == TIPC_CONN_SHUTDOWN ) || m -> msg_control ) res = 0 ; else res = - ECONNRESET ; } if ( likely ( ! ( flags & MSG_PEEK ) ) ) { if ( unlikely ( ++ tport -> conn_unacked >= TIPC_FLOW_CONTROL_WIN ) ) tipc_acknowledge ( tport -> ref , tport -> conn_unacked ) ; advance_rx_queue ( sk ) ; } if ( ( sz_copied < buf_len ) && ( ! skb_queue_empty ( & sk -> sk_receive_queue ) || ( sz_copied < target ) ) && ( ! ( flags & MSG_PEEK ) ) && ( ! err ) ) goto restart ; exit : release_sock ( sk ) ; return sz_copied ? sz_copied : res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exit ; } <S2SV_ModEnd> target = sock_rcvlowat\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int simulate_rdhwr ( struct pt_regs * regs , unsigned int opcode ) { struct thread_info * ti = task_thread_info ( current ) ; if ( ( opcode & OPCODE ) == SPEC3 && ( opcode & FUNC ) == RDHWR ) { int rd = ( opcode & RD ) >> 11 ; int rt = ( opcode & RT ) >> 16 ; perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> switch ( rd ) { case 0 : regs -> regs [ rt ] = smp_processor_id ( ) ; return 0 ; case 1 : regs -> regs [ rt ] = min ( current_cpu_data . dcache . linesz , current_cpu_data . icache . linesz ) ; return 0 ; case 2 : regs -> regs [ rt ] = read_c0_count ( ) ; return 0 ; case 3 : switch ( current_cpu_data . cputype ) { case CPU_20KC : case CPU_25KF : regs -> regs [ rt ] = 1 ; break ; default : regs -> regs [ rt ] = 2 ; } return 0 ; case 29 : regs -> regs [ rt ] = ti -> tp_value ; return 0 ; default : return - 1 ; } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int cipso_v4_req_setattr ( struct request_sock * req , const struct cipso_v4_doi * doi_def , const struct netlbl_lsm_secattr * secattr ) { int ret_val = - EPERM ; unsigned char * buf = NULL ; u32 buf_len ; u32 opt_len ; <S2SV_StartBug> struct ip_options * opt = NULL ; <S2SV_EndBug> struct inet_request_sock * req_inet ; buf_len = CIPSO_V4_OPT_LEN_MAX ; buf = kmalloc ( buf_len , GFP_ATOMIC ) ; if ( buf == NULL ) { ret_val = - ENOMEM ; goto req_setattr_failure ; } ret_val = cipso_v4_genopt ( buf , buf_len , doi_def , secattr ) ; if ( ret_val < 0 ) goto req_setattr_failure ; buf_len = ret_val ; opt_len = ( buf_len + 3 ) & ~ 3 ; opt = kzalloc ( sizeof ( * opt ) + opt_len , GFP_ATOMIC ) ; if ( opt == NULL ) { ret_val = - ENOMEM ; goto req_setattr_failure ; } <S2SV_StartBug> memcpy ( opt -> __data , buf , buf_len ) ; <S2SV_EndBug> <S2SV_StartBug> opt -> optlen = opt_len ; <S2SV_EndBug> <S2SV_StartBug> opt -> cipso = sizeof ( struct iphdr ) ; <S2SV_EndBug> kfree ( buf ) ; buf = NULL ; req_inet = inet_rsk ( req ) ; opt = xchg ( & req_inet -> opt , opt ) ; <S2SV_StartBug> kfree ( opt ) ; <S2SV_EndBug> return 0 ; req_setattr_failure : kfree ( buf ) ; kfree ( opt ) ; return ret_val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> opt_len ; struct ip_options_rcu <S2SV_ModEnd> * opt = <S2SV_ModStart> ( opt -> opt . <S2SV_ModStart> ; opt -> opt . <S2SV_ModStart> ; opt -> opt . <S2SV_ModStart> opt ) ; if ( opt ) call_rcu ( & opt -> rcu , opt_kfree_rcu <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 gpols_ret * get_pols_2_svc ( gpols_arg * arg , struct svc_req * rqstp ) { static gpols_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_gpols_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } prime_arg = arg -> exp ; if ( prime_arg == NULL ) prime_arg = \"*\" ; if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_LIST , NULL , NULL ) ) { ret . code = KADM5_AUTH_LIST ; log_unauth ( \"kadm5_get_policies\" , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_get_policies ( ( void * ) handle , arg -> exp , & ret . pols , & ret . count ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_get_policies\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> ) ; } exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14604\n\n```\nCWE-20 static void activate_desktop_file ( ActivateParameters * parameters , NautilusFile * file ) { ActivateParametersDesktop * parameters_desktop ; char * primary , * secondary , * display_name ; GtkWidget * dialog ; GdkScreen * screen ; char * uri ; screen = gtk_widget_get_screen ( GTK_WIDGET ( parameters -> parent_window ) ) ; if ( ! nautilus_file_is_trusted_link ( file ) ) { parameters_desktop = g_new0 ( ActivateParametersDesktop , 1 ) ; if ( parameters -> parent_window ) { parameters_desktop -> parent_window = parameters -> parent_window ; g_object_add_weak_pointer ( G_OBJECT ( parameters_desktop -> parent_window ) , ( gpointer * ) & parameters_desktop -> parent_window ) ; } parameters_desktop -> file = nautilus_file_ref ( file ) ; primary = _ ( \"Untrusted<S2SV_blank>application<S2SV_blank>launcher\" ) ; display_name = nautilus_file_get_display_name ( file ) ; secondary = g_strdup_printf ( _ ( \"The<S2SV_blank>application<S2SV_blank>launcher<S2SV_blank>“%s”<S2SV_blank>has<S2SV_blank>not<S2SV_blank>been<S2SV_blank>marked<S2SV_blank>as<S2SV_blank>trusted.<S2SV_blank>\" \"If<S2SV_blank>you<S2SV_blank>do<S2SV_blank>not<S2SV_blank>know<S2SV_blank>the<S2SV_blank>source<S2SV_blank>of<S2SV_blank>this<S2SV_blank>file,<S2SV_blank>launching<S2SV_blank>it<S2SV_blank>may<S2SV_blank>be<S2SV_blank>unsafe.\" ) , display_name ) ; dialog = gtk_message_dialog_new ( parameters -> parent_window , 0 , GTK_MESSAGE_WARNING , GTK_BUTTONS_NONE , NULL ) ; g_object_set ( dialog , \"text\" , primary , \"secondary-text\" , secondary , NULL ) ; gtk_dialog_add_button ( GTK_DIALOG ( dialog ) , <S2SV_StartBug> _ ( \"_Launch<S2SV_blank>Anyway\" ) , RESPONSE_RUN ) ; <S2SV_EndBug> if ( nautilus_file_can_set_permissions ( file ) ) { gtk_dialog_add_button ( GTK_DIALOG ( dialog ) , <S2SV_StartBug> _ ( \"Mark<S2SV_blank>as<S2SV_blank>_Trusted\" ) , RESPONSE_MARK_TRUSTED ) ; <S2SV_EndBug> } <S2SV_StartBug> gtk_dialog_add_button ( GTK_DIALOG ( dialog ) , <S2SV_EndBug> _ ( \"_Cancel\" ) , GTK_RESPONSE_CANCEL ) ; gtk_dialog_set_default_response ( GTK_DIALOG ( dialog ) , GTK_RESPONSE_CANCEL ) ; g_signal_connect ( dialog , \"response\" , G_CALLBACK ( untrusted_launcher_response_callback ) , parameters_desktop ) ; gtk_widget_show ( dialog ) ; g_free ( display_name ) ; g_free ( secondary ) ; return ; } uri = nautilus_file_get_uri ( file ) ; DEBUG ( \"Launching<S2SV_blank>trusted<S2SV_blank>launcher<S2SV_blank>%s\" , uri ) ; nautilus_launch_desktop_file ( screen , uri , NULL , parameters -> parent_window ) ; g_free ( uri ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , _ ( \"_Cancel\" ) , GTK_RESPONSE_CANCEL ) ; gtk_dialog_set_default_response ( GTK_DIALOG ( dialog ) , GTK_RESPONSE_CANCEL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , _ ( \"Trust<S2SV_blank>and<S2SV_blank>_Launch\" ) , GTK_RESPONSE_OK <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> g_signal_connect ( dialog\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2674\n\n```\nCWE-189 void * leak_memalign ( size_t alignment , size_t bytes ) { if ( alignment <= MALLOC_ALIGNMENT ) return leak_malloc ( bytes ) ; if ( alignment & ( alignment - 1 ) ) alignment = 1L << ( 31 - __builtin_clz ( alignment ) ) ; <S2SV_StartBug> size_t size = ( alignment - MALLOC_ALIGNMENT ) + bytes ; <S2SV_EndBug> void * base = leak_malloc ( size ) ; if ( base != NULL ) { intptr_t ptr = ( intptr_t ) base ; if ( ( ptr % alignment ) == 0 ) return base ; ptr += ( ( - ptr ) % alignment ) ; ( ( void * * ) ptr ) [ - 1 ] = MEMALIGN_GUARD ; ( ( void * * ) ptr ) [ - 2 ] = base ; return ( void * ) ptr ; } return base ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + bytes ; if ( size < bytes ) { return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9773\n\n```\nCWE-284 void _moddeinit ( module_unload_intent_t intent ) { service_named_unbind_command ( \"chanserv\" , & cs_flags ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cs_flags ) ; hook_del_nick_can_register ( check_registration_keywords ) ; hook_del_user_can_register ( check_registration_keywords ) ; del_conf_item ( \"ANOPE_FLAGS_COMPAT\" , & chansvs . me -> conf_table ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15121\n\n```\nCWE-78 R_API char * r_socket_http_get ( const char * url , int * code , int * rlen ) { <S2SV_StartBug> char * curl_env = r_sys_getenv ( \"R2_CURL\" ) ; <S2SV_EndBug> if ( curl_env && * curl_env ) { char * encoded_url = r_str_escape ( url ) ; char * res = r_sys_cmd_strf ( \"curl<S2SV_blank>\\'%s\\'\" , encoded_url ) ; free ( encoded_url ) ; if ( res ) { if ( code ) { * code = 200 ; } if ( rlen ) { * rlen = strlen ( res ) ; } <S2SV_StartBug> } <S2SV_EndBug> free ( curl_env ) ; return res ; } free ( curl_env ) ; RSocket * s ; int ssl = r_str_startswith ( url , \"https://\" ) ; char * response , * host , * path , * port = \"80\" ; char * uri = strdup ( url ) ; if ( ! uri ) { return NULL ; } if ( code ) { * code = 0 ; } if ( rlen ) { * rlen = 0 ; } host = strstr ( uri , \"://\" ) ; if ( ! host ) { free ( uri ) ; eprintf ( \"r_socket_http_get:<S2SV_blank>Invalid<S2SV_blank>URI\" ) ; return NULL ; } host += 3 ; port = strchr ( host , ':' ) ; if ( ! port ) { port = ssl ? \"443\" : \"80\" ; path = host ; } else { * port ++ = 0 ; path = port ; } path = strchr ( path , '/' ) ; if ( ! path ) { path = \"\" ; } else { * path ++ = 0 ; } s = r_socket_new ( ssl ) ; if ( ! s ) { eprintf ( \"r_socket_http_get:<S2SV_blank>Cannot<S2SV_blank>create<S2SV_blank>socket\\\\n\" ) ; free ( uri ) ; return NULL ; } if ( r_socket_connect_tcp ( s , host , port , 0 ) ) { r_socket_printf ( s , \"GET<S2SV_blank>/%s<S2SV_blank>HTTP/1.1\\\\r\\\\n\" \"User-Agent:<S2SV_blank>radare2<S2SV_blank>\" R2_VERSION \"\\\\r\\\\n\" \"Accept:<S2SV_blank>*/*\\\\r\\\\n\" \"Host:<S2SV_blank>%s:%s\\\\r\\\\n\" \"\\\\r\\\\n\" , path , host , port ) ; response = r_socket_http_answer ( s , code , rlen ) ; } else { eprintf ( \"Cannot<S2SV_blank>connect<S2SV_blank>to<S2SV_blank>%s:%s\\\\n\" , host , port ) ; response = NULL ; } free ( uri ) ; r_socket_free ( s ) ; return response ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rlen ) { return socket_http_get_recursive ( url , code , rlen , SOCKET_HTTP_MAX_REDIRECTS <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4470\n\n```\nCWE-264 static inline int ip_ufo_append_data ( struct sock * sk , struct sk_buff_head * queue , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int hh_len , int fragheaderlen , int transhdrlen , int maxfraglen , unsigned int flags ) { struct sk_buff * skb ; int err ; if ( ( skb = skb_peek_tail ( queue ) ) == NULL ) { skb = sock_alloc_send_skb ( sk , hh_len + fragheaderlen + transhdrlen + 20 , ( flags & MSG_DONTWAIT ) , & err ) ; if ( skb == NULL ) return err ; skb_reserve ( skb , hh_len ) ; skb_put ( skb , fragheaderlen + transhdrlen ) ; skb_reset_network_header ( skb ) ; skb -> transport_header = skb -> network_header + fragheaderlen ; <S2SV_StartBug> skb -> ip_summed = CHECKSUM_PARTIAL ; <S2SV_EndBug> skb -> csum = 0 ; skb_shinfo ( skb ) -> gso_size = maxfraglen - fragheaderlen ; skb_shinfo ( skb ) -> gso_type = SKB_GSO_UDP ; <S2SV_StartBug> __skb_queue_tail ( queue , skb ) ; <S2SV_EndBug> } return skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; skb -> csum = 0 ; __skb_queue_tail ( queue , skb ) ; } else if ( skb_is_gso ( skb ) ) { goto append ; } skb -> <S2SV_ModStart> ip_summed = CHECKSUM_PARTIAL <S2SV_ModEnd> ; skb_shinfo ( <S2SV_ModStart> = SKB_GSO_UDP ; append : <S2SV_ModEnd> return skb_append_datato_frags (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999010\n\n```\nCWE-125 int ff_mms_asf_header_parser ( MMSContext * mms ) { uint8_t * p = mms -> asf_header ; uint8_t * end ; int flags , stream_id ; mms -> stream_num = 0 ; if ( mms -> asf_header_size < sizeof ( ff_asf_guid ) * 2 + 22 || memcmp ( p , ff_asf_header , sizeof ( ff_asf_guid ) ) ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(invalid<S2SV_blank>ASF<S2SV_blank>header,<S2SV_blank>size=%d)\\\\n\" , mms -> asf_header_size ) ; return AVERROR_INVALIDDATA ; } end = mms -> asf_header + mms -> asf_header_size ; p += sizeof ( ff_asf_guid ) + 14 ; while ( end - p >= sizeof ( ff_asf_guid ) + 8 ) { uint64_t chunksize ; if ( ! memcmp ( p , ff_asf_data_header , sizeof ( ff_asf_guid ) ) ) { chunksize = 50 ; } else { chunksize = AV_RL64 ( p + sizeof ( ff_asf_guid ) ) ; } if ( ! chunksize || chunksize > end - p ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(header<S2SV_blank>chunksize<S2SV_blank>%\" PRId64 \"<S2SV_blank>is<S2SV_blank>invalid)\\\\n\" , chunksize ) ; return AVERROR_INVALIDDATA ; } if ( ! memcmp ( p , ff_asf_file_header , sizeof ( ff_asf_guid ) ) ) { if ( end - p > sizeof ( ff_asf_guid ) * 2 + 68 ) { mms -> asf_packet_len = AV_RL32 ( p + sizeof ( ff_asf_guid ) * 2 + 64 ) ; if ( mms -> asf_packet_len <= 0 || mms -> asf_packet_len > sizeof ( mms -> in_buffer ) ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(too<S2SV_blank>large<S2SV_blank>pkt_len<S2SV_blank>%d)\\\\n\" , mms -> asf_packet_len ) ; return AVERROR_INVALIDDATA ; } } } else if ( ! memcmp ( p , ff_asf_stream_header , sizeof ( ff_asf_guid ) ) ) { <S2SV_StartBug> flags = AV_RL16 ( p + sizeof ( ff_asf_guid ) * 3 + 24 ) ; <S2SV_EndBug> stream_id = flags & 0x7F ; if ( mms -> stream_num < MMS_MAX_STREAMS && 46 + mms -> stream_num * 6 < sizeof ( mms -> out_buffer ) ) { mms -> streams = av_fast_realloc ( mms -> streams , & mms -> nb_streams_allocated , ( mms -> stream_num + 1 ) * sizeof ( MMSStream ) ) ; if ( ! mms -> streams ) return AVERROR ( ENOMEM ) ; mms -> streams [ mms -> stream_num ] . id = stream_id ; mms -> stream_num ++ ; } else { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(too<S2SV_blank>many<S2SV_blank>A/V<S2SV_blank>streams)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } <S2SV_StartBug> } else if ( ! memcmp ( p , ff_asf_ext_stream_header , sizeof ( ff_asf_guid ) ) ) { <S2SV_EndBug> if ( end - p >= 88 ) { int stream_count = AV_RL16 ( p + 84 ) , ext_len_count = AV_RL16 ( p + 86 ) ; uint64_t skip_bytes = 88 ; while ( stream_count -- ) { if ( end - p < skip_bytes + 4 ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(next<S2SV_blank>stream<S2SV_blank>name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>buffer)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } skip_bytes += 4 + AV_RL16 ( p + skip_bytes + 2 ) ; } while ( ext_len_count -- ) { if ( end - p < skip_bytes + 22 ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(next<S2SV_blank>extension<S2SV_blank>system<S2SV_blank>info<S2SV_blank>length<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>buffer)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } skip_bytes += 22 + AV_RL32 ( p + skip_bytes + 18 ) ; } if ( end - p < skip_bytes ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(the<S2SV_blank>last<S2SV_blank>extension<S2SV_blank>system<S2SV_blank>info<S2SV_blank>length<S2SV_blank>is<S2SV_blank>invalid)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( chunksize - skip_bytes > 24 ) chunksize = skip_bytes ; } } else if ( ! memcmp ( p , ff_asf_head1_guid , sizeof ( ff_asf_guid ) ) ) { chunksize = 46 ; <S2SV_StartBug> } <S2SV_EndBug> p += chunksize ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( end - p >= ( sizeof ( ff_asf_guid ) * 3 + 26 ) ) { <S2SV_ModStart> ; } } } <S2SV_ModStart> = 46 ; if ( chunksize > end - p ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(header<S2SV_blank>chunksize<S2SV_blank>%\" PRId64 \"<S2SV_blank>is<S2SV_blank>invalid)\\\\n\" , chunksize ) ; return AVERROR_INVALIDDATA ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2390\n\n```\nCWE-399 static void hugetlb_vm_op_close ( struct vm_area_struct * vma ) { struct hstate * h = hstate_vma ( vma ) ; struct resv_map * reservations = vma_resv_map ( vma ) ; struct hugepage_subpool * spool = subpool_vma ( vma ) ; unsigned long reserve ; unsigned long start ; unsigned long end ; if ( reservations ) { start = vma_hugecache_offset ( h , vma , vma -> vm_start ) ; end = vma_hugecache_offset ( h , vma , vma -> vm_end ) ; reserve = ( end - start ) - region_count ( & reservations -> regions , start , end ) ; <S2SV_StartBug> kref_put ( & reservations -> refs , resv_map_release ) ; <S2SV_EndBug> if ( reserve ) { hugetlb_acct_memory ( h , - reserve ) ; hugepage_subpool_put_pages ( spool , reserve ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> end ) ; resv_map_put ( vma <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 long kvm_arch_vcpu_ioctl ( struct file * filp , unsigned int ioctl , unsigned long arg ) { struct kvm_vcpu * vcpu = filp -> private_data ; void __user * argp = ( void __user * ) arg ; int r ; union { struct kvm_lapic_state * lapic ; struct kvm_xsave * xsave ; struct kvm_xcrs * xcrs ; void * buffer ; } u ; u . buffer = NULL ; switch ( ioctl ) { case KVM_GET_LAPIC : { r = - EINVAL ; if ( ! vcpu -> arch . apic ) goto out ; u . lapic = kzalloc ( sizeof ( struct kvm_lapic_state ) , GFP_KERNEL ) ; r = - ENOMEM ; if ( ! u . lapic ) goto out ; r = kvm_vcpu_ioctl_get_lapic ( vcpu , u . lapic ) ; if ( r ) goto out ; r = - EFAULT ; if ( copy_to_user ( argp , u . lapic , sizeof ( struct kvm_lapic_state ) ) ) goto out ; r = 0 ; break ; } case KVM_SET_LAPIC : { r = - EINVAL ; if ( ! vcpu -> arch . apic ) goto out ; u . lapic = memdup_user ( argp , sizeof ( * u . lapic ) ) ; if ( IS_ERR ( u . lapic ) ) return PTR_ERR ( u . lapic ) ; r = kvm_vcpu_ioctl_set_lapic ( vcpu , u . lapic ) ; break ; } case KVM_INTERRUPT : { struct kvm_interrupt irq ; r = - EFAULT ; if ( copy_from_user ( & irq , argp , sizeof irq ) ) goto out ; r = kvm_vcpu_ioctl_interrupt ( vcpu , & irq ) ; break ; } case KVM_NMI : { r = kvm_vcpu_ioctl_nmi ( vcpu ) ; break ; } case KVM_SET_CPUID : { struct kvm_cpuid __user * cpuid_arg = argp ; struct kvm_cpuid cpuid ; r = - EFAULT ; if ( copy_from_user ( & cpuid , cpuid_arg , sizeof cpuid ) ) goto out ; r = kvm_vcpu_ioctl_set_cpuid ( vcpu , & cpuid , cpuid_arg -> entries ) ; break ; } case KVM_SET_CPUID2 : { struct kvm_cpuid2 __user * cpuid_arg = argp ; struct kvm_cpuid2 cpuid ; r = - EFAULT ; if ( copy_from_user ( & cpuid , cpuid_arg , sizeof cpuid ) ) goto out ; r = kvm_vcpu_ioctl_set_cpuid2 ( vcpu , & cpuid , cpuid_arg -> entries ) ; break ; } case KVM_GET_CPUID2 : { struct kvm_cpuid2 __user * cpuid_arg = argp ; struct kvm_cpuid2 cpuid ; r = - EFAULT ; if ( copy_from_user ( & cpuid , cpuid_arg , sizeof cpuid ) ) goto out ; r = kvm_vcpu_ioctl_get_cpuid2 ( vcpu , & cpuid , cpuid_arg -> entries ) ; if ( r ) goto out ; r = - EFAULT ; if ( copy_to_user ( cpuid_arg , & cpuid , sizeof cpuid ) ) goto out ; r = 0 ; break ; } case KVM_GET_MSRS : r = msr_io ( vcpu , argp , kvm_get_msr , 1 ) ; break ; case KVM_SET_MSRS : r = msr_io ( vcpu , argp , do_set_msr , 0 ) ; break ; case KVM_TPR_ACCESS_REPORTING : { struct kvm_tpr_access_ctl tac ; r = - EFAULT ; if ( copy_from_user ( & tac , argp , sizeof tac ) ) goto out ; r = vcpu_ioctl_tpr_access_reporting ( vcpu , & tac ) ; if ( r ) goto out ; r = - EFAULT ; if ( copy_to_user ( argp , & tac , sizeof tac ) ) goto out ; r = 0 ; break ; } ; case KVM_SET_VAPIC_ADDR : { struct kvm_vapic_addr va ; r = - EINVAL ; if ( ! irqchip_in_kernel ( vcpu -> kvm ) ) goto out ; r = - EFAULT ; if ( copy_from_user ( & va , argp , sizeof va ) ) goto out ; <S2SV_StartBug> r = 0 ; <S2SV_EndBug> kvm_lapic_set_vapic_addr ( vcpu , va . vapic_addr ) ; break ; } case KVM_X86_SETUP_MCE : { u64 mcg_cap ; r = - EFAULT ; if ( copy_from_user ( & mcg_cap , argp , sizeof mcg_cap ) ) goto out ; r = kvm_vcpu_ioctl_x86_setup_mce ( vcpu , mcg_cap ) ; break ; } case KVM_X86_SET_MCE : { struct kvm_x86_mce mce ; r = - EFAULT ; if ( copy_from_user ( & mce , argp , sizeof mce ) ) goto out ; r = kvm_vcpu_ioctl_x86_set_mce ( vcpu , & mce ) ; break ; } case KVM_GET_VCPU_EVENTS : { struct kvm_vcpu_events events ; kvm_vcpu_ioctl_x86_get_vcpu_events ( vcpu , & events ) ; r = - EFAULT ; if ( copy_to_user ( argp , & events , sizeof ( struct kvm_vcpu_events ) ) ) break ; r = 0 ; break ; } case KVM_SET_VCPU_EVENTS : { struct kvm_vcpu_events events ; r = - EFAULT ; if ( copy_from_user ( & events , argp , sizeof ( struct kvm_vcpu_events ) ) ) break ; r = kvm_vcpu_ioctl_x86_set_vcpu_events ( vcpu , & events ) ; break ; } case KVM_GET_DEBUGREGS : { struct kvm_debugregs dbgregs ; kvm_vcpu_ioctl_x86_get_debugregs ( vcpu , & dbgregs ) ; r = - EFAULT ; if ( copy_to_user ( argp , & dbgregs , sizeof ( struct kvm_debugregs ) ) ) break ; r = 0 ; break ; } case KVM_SET_DEBUGREGS : { struct kvm_debugregs dbgregs ; r = - EFAULT ; if ( copy_from_user ( & dbgregs , argp , sizeof ( struct kvm_debugregs ) ) ) break ; r = kvm_vcpu_ioctl_x86_set_debugregs ( vcpu , & dbgregs ) ; break ; } case KVM_GET_XSAVE : { u . xsave = kzalloc ( sizeof ( struct kvm_xsave ) , GFP_KERNEL ) ; r = - ENOMEM ; if ( ! u . xsave ) break ; kvm_vcpu_ioctl_x86_get_xsave ( vcpu , u . xsave ) ; r = - EFAULT ; if ( copy_to_user ( argp , u . xsave , sizeof ( struct kvm_xsave ) ) ) break ; r = 0 ; break ; } case KVM_SET_XSAVE : { u . xsave = memdup_user ( argp , sizeof ( * u . xsave ) ) ; if ( IS_ERR ( u . xsave ) ) return PTR_ERR ( u . xsave ) ; r = kvm_vcpu_ioctl_x86_set_xsave ( vcpu , u . xsave ) ; break ; } case KVM_GET_XCRS : { u . xcrs = kzalloc ( sizeof ( struct kvm_xcrs ) , GFP_KERNEL ) ; r = - ENOMEM ; if ( ! u . xcrs ) break ; kvm_vcpu_ioctl_x86_get_xcrs ( vcpu , u . xcrs ) ; r = - EFAULT ; if ( copy_to_user ( argp , u . xcrs , sizeof ( struct kvm_xcrs ) ) ) break ; r = 0 ; break ; } case KVM_SET_XCRS : { u . xcrs = memdup_user ( argp , sizeof ( * u . xcrs ) ) ; if ( IS_ERR ( u . xcrs ) ) return PTR_ERR ( u . xcrs ) ; r = kvm_vcpu_ioctl_x86_set_xcrs ( vcpu , u . xcrs ) ; break ; } case KVM_SET_TSC_KHZ : { u32 user_tsc_khz ; r = - EINVAL ; user_tsc_khz = ( u32 ) arg ; if ( user_tsc_khz >= kvm_max_guest_tsc_khz ) goto out ; if ( user_tsc_khz == 0 ) user_tsc_khz = tsc_khz ; kvm_set_tsc_khz ( vcpu , user_tsc_khz ) ; r = 0 ; goto out ; } case KVM_GET_TSC_KHZ : { r = vcpu -> arch . virtual_tsc_khz ; goto out ; } case KVM_KVMCLOCK_CTRL : { r = kvm_set_guest_paused ( vcpu ) ; goto out ; } default : r = - EINVAL ; } out : kfree ( u . buffer ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; r = <S2SV_ModEnd> kvm_lapic_set_vapic_addr ( vcpu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_init_second_pass ( VP9_COMP * cpi ) { SVC * const svc = & cpi -> svc ; <S2SV_StartBug> FIRSTPASS_STATS this_frame ; <S2SV_EndBug> const FIRSTPASS_STATS * start_pos ; struct twopass_rc * twopass = & cpi -> twopass ; const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_StartBug> const int is_spatial_svc = ( svc -> number_spatial_layers > 1 ) && <S2SV_EndBug> <S2SV_StartBug> ( svc -> number_temporal_layers == 1 ) ; <S2SV_EndBug> <S2SV_StartBug> double frame_rate ; <S2SV_EndBug> if ( is_spatial_svc ) { <S2SV_StartBug> twopass = & svc -> layer_context [ svc -> spatial_layer_id ] . twopass ; <S2SV_EndBug> } zero_stats ( & twopass -> total_stats ) ; zero_stats ( & twopass -> total_left_stats ) ; if ( ! twopass -> stats_in_end ) return ; <S2SV_StartBug> twopass -> total_stats = * twopass -> stats_in_end ; <S2SV_EndBug> <S2SV_StartBug> twopass -> total_left_stats = twopass -> total_stats ; <S2SV_EndBug> <S2SV_StartBug> frame_rate = 10000000.0 * twopass -> total_stats . count / <S2SV_EndBug> twopass -> total_stats . duration ; <S2SV_StartBug> if ( is_spatial_svc ) { <S2SV_EndBug> vp9_update_spatial_layer_framerate ( cpi , frame_rate ) ; twopass -> bits_left = <S2SV_StartBug> ( int64_t ) ( twopass -> total_stats . duration * <S2SV_EndBug> svc -> layer_context [ svc -> spatial_layer_id ] . target_bandwidth / 10000000.0 ) ; } else { vp9_new_framerate ( cpi , frame_rate ) ; <S2SV_StartBug> twopass -> bits_left = ( int64_t ) ( twopass -> total_stats . duration * <S2SV_EndBug> oxcf -> target_bandwidth / 10000000.0 ) ; } <S2SV_StartBug> cpi -> output_framerate = oxcf -> framerate ; <S2SV_EndBug> if ( ! is_spatial_svc ) { twopass -> kf_intra_err_min = KF_MB_INTRA_MIN * cpi -> common . MBs ; twopass -> gf_intra_err_min = GF_MB_INTRA_MIN * cpi -> common . MBs ; } twopass -> sr_update_lag = 1 ; { <S2SV_StartBug> double sum_iiratio = 0.0 ; <S2SV_EndBug> <S2SV_StartBug> start_pos = twopass -> stats_in ; <S2SV_EndBug> <S2SV_StartBug> while ( input_stats ( twopass , & this_frame ) != EOF ) { <S2SV_EndBug> const double iiratio = this_frame . intra_error / DOUBLE_DIVIDE_CHECK ( this_frame . coded_error ) ; sum_iiratio += fclamp ( iiratio , 1.0 , 20.0 ) ; } twopass -> avg_iiratio = sum_iiratio / DOUBLE_DIVIDE_CHECK ( ( double ) twopass -> total_stats . count ) ; reset_fpf_position ( twopass , start_pos ) ; } { double av_error = twopass -> total_stats . ssim_weighted_pred_err / DOUBLE_DIVIDE_CHECK ( twopass -> total_stats . count ) ; start_pos = twopass -> stats_in ; twopass -> modified_error_total = 0.0 ; twopass -> modified_error_min = ( av_error * oxcf -> two_pass_vbrmin_section ) / 100 ; twopass -> modified_error_max = ( av_error * oxcf -> two_pass_vbrmax_section ) / 100 ; while ( input_stats ( twopass , & this_frame ) != EOF ) { twopass -> modified_error_total += <S2SV_StartBug> calculate_modified_err ( cpi , & this_frame ) ; <S2SV_EndBug> } <S2SV_StartBug> twopass -> modified_error_left = twopass -> modified_error_total ; <S2SV_EndBug> reset_fpf_position ( twopass , start_pos ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> svc ; const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> ; const int is_two_pass_svc <S2SV_ModEnd> = ( svc <S2SV_ModStart> > 1 ) || <S2SV_ModEnd> ( svc -> <S2SV_ModStart> svc -> number_temporal_layers > <S2SV_ModEnd> 1 ) ; <S2SV_ModStart> 1 ) ; TWO_PASS * const twopass = is_two_pass_svc ? <S2SV_ModEnd> & svc -> <S2SV_ModStart> ] . twopass : & cpi -> twopass ; double frame_rate ; FIRSTPASS_STATS * stats ; <S2SV_ModEnd> zero_stats ( & <S2SV_ModStart> ) return ; stats = & <S2SV_ModStart> twopass -> total_stats ; * stats <S2SV_ModStart> -> total_left_stats = * stats <S2SV_ModEnd> ; frame_rate = <S2SV_ModStart> = 10000000.0 * stats -> count / stats -> <S2SV_ModEnd> duration ; if <S2SV_ModStart> ; if ( is_two_pass_svc <S2SV_ModEnd> ) { vp9_update_spatial_layer_framerate <S2SV_ModStart> int64_t ) ( stats -> <S2SV_ModEnd> duration * svc <S2SV_ModStart> int64_t ) ( stats -> <S2SV_ModEnd> duration * oxcf <S2SV_ModStart> ) ; } <S2SV_ModEnd> twopass -> sr_update_lag <S2SV_ModStart> 1 ; { const double avg_error = stats -> coded_error / DOUBLE_DIVIDE_CHECK ( stats -> count ) ; const FIRSTPASS_STATS * s = twopass -> stats_in ; double modified_error_total <S2SV_ModEnd> = 0.0 ; <S2SV_ModStart> = 0.0 ; twopass -> modified_error_min = ( avg_error * oxcf -> two_pass_vbrmin_section ) / 100 ; twopass -> modified_error_max = ( avg_error * oxcf -> two_pass_vbrmax_section ) / 100 <S2SV_ModEnd> ; while ( <S2SV_ModStart> ; while ( s < twopass -> stats_in_end ) { <S2SV_ModEnd> modified_error_total += calculate_modified_err <S2SV_ModStart> ( cpi , twopass , oxcf , s ) ; ++ s <S2SV_ModEnd> ; } twopass <S2SV_ModStart> -> modified_error_left = modified_error_total ; } cpi -> rc . vbr_bits_off_target = 0 ; cpi -> rc . vbr_bits_off_target_fast = 0 ; cpi -> rc . rate_error_estimate = 0 ; twopass -> kf_zeromotion_pct = 100 ; twopass -> last_kfgroup_zeromotion_pct = 100 ; if ( oxcf -> resize_mode != RESIZE_NONE ) { vp9_init_subsampling ( cpi <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-191(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10166\n\n```\nCWE-191 static inline LineContribType * _gdContributionsAlloc ( unsigned int line_length , unsigned int windows_size ) { unsigned int u = 0 ; LineContribType * res ; <S2SV_StartBug> int overflow_error = 0 ; <S2SV_EndBug> <S2SV_StartBug> res = ( LineContribType * ) gdMalloc ( sizeof ( LineContribType ) ) ; <S2SV_EndBug> if ( ! res ) { return NULL ; } res -> WindowSize = windows_size ; res -> LineLength = line_length ; if ( overflow2 ( line_length , sizeof ( ContributionType ) ) ) { gdFree ( res ) ; return NULL ; } res -> ContribRow = ( ContributionType * ) gdMalloc ( line_length * sizeof ( ContributionType ) ) ; if ( res -> ContribRow == NULL ) { gdFree ( res ) ; return NULL ; } <S2SV_StartBug> for ( u = 0 ; u < line_length ; u ++ ) { <S2SV_EndBug> if ( overflow2 ( windows_size , sizeof ( double ) ) ) { overflow_error = 1 ; } else { <S2SV_StartBug> res -> ContribRow [ u ] . Weights = ( double * ) gdMalloc ( windows_size * sizeof ( double ) ) ; <S2SV_EndBug> } if ( overflow_error == 1 || res -> ContribRow [ u ] . Weights == NULL ) { unsigned int i ; <S2SV_StartBug> u -- ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i <= u ; i ++ ) { <S2SV_EndBug> gdFree ( res -> ContribRow [ i ] . Weights ) ; } gdFree ( res -> ContribRow ) ; gdFree ( res ) ; return NULL ; } } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * res ; size_t weights_size ; if ( overflow2 ( windows_size , sizeof ( double ) ) ) { return NULL ; } else { weights_size = windows_size * sizeof ( double ) ; } res = ( LineContribType * ) gdMalloc ( sizeof ( LineContribType ) ) ; if ( ! res ) { return NULL ; } res -> WindowSize = windows_size ; res -> LineLength = line_length ; if ( overflow2 ( line_length , sizeof ( ContributionType ) ) ) { gdFree ( res ) ; return NULL ; } res -> ContribRow = ( ContributionType * ) gdMalloc ( line_length * sizeof ( ContributionType ) ) ; if ( res -> ContribRow == NULL ) { gdFree ( res ) ; return NULL ; } for ( u <S2SV_ModEnd> = 0 ; <S2SV_ModStart> = 0 ; <S2SV_ModEnd> u < line_length <S2SV_ModStart> u ++ ) <S2SV_ModEnd> { res -> <S2SV_ModStart> ) gdMalloc ( weights_size ) ; if ( <S2SV_ModEnd> res -> ContribRow <S2SV_ModStart> int i ; <S2SV_ModEnd> for ( i <S2SV_ModStart> 0 ; i < <S2SV_ModEnd> u ; i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11045\n\n```\nCWE-125 static BOOL update_read_bitmap_data ( rdpUpdate * update , wStream * s , BITMAP_DATA * bitmapData ) { WINPR_UNUSED ( update ) ; if ( Stream_GetRemainingLength ( s ) < 18 ) return FALSE ; Stream_Read_UINT16 ( s , bitmapData -> destLeft ) ; Stream_Read_UINT16 ( s , bitmapData -> destTop ) ; Stream_Read_UINT16 ( s , bitmapData -> destRight ) ; Stream_Read_UINT16 ( s , bitmapData -> destBottom ) ; Stream_Read_UINT16 ( s , bitmapData -> width ) ; Stream_Read_UINT16 ( s , bitmapData -> height ) ; Stream_Read_UINT16 ( s , bitmapData -> bitsPerPixel ) ; Stream_Read_UINT16 ( s , bitmapData -> flags ) ; Stream_Read_UINT16 ( s , bitmapData -> bitmapLength ) ; if ( bitmapData -> flags & BITMAP_COMPRESSION ) { if ( ! ( bitmapData -> flags & NO_BITMAP_COMPRESSION_HDR ) ) { <S2SV_StartBug> Stream_Read_UINT16 ( s , <S2SV_EndBug> bitmapData -> cbCompFirstRowSize ) ; Stream_Read_UINT16 ( s , bitmapData -> cbCompMainBodySize ) ; Stream_Read_UINT16 ( s , bitmapData -> cbScanWidth ) ; Stream_Read_UINT16 ( s , bitmapData -> cbUncompressedSize ) ; bitmapData -> bitmapLength = bitmapData -> cbCompMainBodySize ; } bitmapData -> compressed = TRUE ; } else bitmapData -> compressed = FALSE ; if ( Stream_GetRemainingLength ( s ) < bitmapData -> bitmapLength ) return FALSE ; if ( bitmapData -> bitmapLength > 0 ) { bitmapData -> bitmapDataStream = malloc ( bitmapData -> bitmapLength ) ; if ( ! bitmapData -> bitmapDataStream ) return FALSE ; memcpy ( bitmapData -> bitmapDataStream , Stream_Pointer ( s ) , bitmapData -> bitmapLength ) ; Stream_Seek ( s , bitmapData -> bitmapLength ) ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( Stream_GetRemainingLength ( s ) < 8 ) return FALSE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2141\n\n```\nCWE-399 static int do_tkill ( pid_t tgid , pid_t pid , int sig ) { <S2SV_StartBug> struct siginfo info ; <S2SV_EndBug> info . si_signo = sig ; info . si_errno = 0 ; info . si_code = SI_TKILL ; info . si_pid = task_tgid_vnr ( current ) ; info . si_uid = from_kuid_munged ( current_user_ns ( ) , current_uid ( ) ) ; return do_send_specific ( tgid , pid , sig , & info ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct siginfo info = { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int file_is_raw ( struct VpxInputContext * input ) { <S2SV_EndBug> uint8_t buf [ 32 ] ; int is_raw = 0 ; vpx_codec_stream_info_t si ; si . sz = sizeof ( si ) ; if ( fread ( buf , 1 , 32 , input -> file ) == 32 ) { int i ; if ( mem_get_le32 ( buf ) < 256 * 1024 * 1024 ) { for ( i = 0 ; i < get_vpx_decoder_count ( ) ; ++ i ) { const VpxInterface * const decoder = get_vpx_decoder_by_index ( i ) ; <S2SV_StartBug> if ( ! vpx_codec_peek_stream_info ( decoder -> interface ( ) , <S2SV_EndBug> buf + 4 , 32 - 4 , & si ) ) { is_raw = 1 ; input -> fourcc = decoder -> fourcc ; input -> width = si . w ; input -> height = si . h ; input -> framerate . numerator = 30 ; input -> framerate . denominator = 1 ; break ; } } } } rewind ( input -> file ) ; return is_raw ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> ( decoder -> codec_interface <S2SV_ModEnd> ( ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2384\n\n```\nCWE-189 static int i915_gem_do_execbuffer ( struct drm_device * dev , void * data , struct drm_file * file , struct drm_i915_gem_execbuffer2 * args , struct drm_i915_gem_exec_object2 * exec ) { drm_i915_private_t * dev_priv = dev -> dev_private ; struct list_head objects ; struct eb_objects * eb ; struct drm_i915_gem_object * batch_obj ; struct drm_clip_rect * cliprects = NULL ; struct intel_ring_buffer * ring ; u32 exec_start , exec_len ; u32 seqno ; u32 mask ; int ret , mode , i ; if ( ! i915_gem_check_execbuffer ( args ) ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>offset/length\\\\n\" ) ; return - EINVAL ; } ret = validate_exec_list ( exec , args -> buffer_count ) ; if ( ret ) return ret ; switch ( args -> flags & I915_EXEC_RING_MASK ) { case I915_EXEC_DEFAULT : case I915_EXEC_RENDER : ring = & dev_priv -> ring [ RCS ] ; break ; case I915_EXEC_BSD : if ( ! HAS_BSD ( dev ) ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>ring<S2SV_blank>(BSD)\\\\n\" ) ; return - EINVAL ; } ring = & dev_priv -> ring [ VCS ] ; break ; case I915_EXEC_BLT : if ( ! HAS_BLT ( dev ) ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>ring<S2SV_blank>(BLT)\\\\n\" ) ; return - EINVAL ; } ring = & dev_priv -> ring [ BCS ] ; break ; default : DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>unknown<S2SV_blank>ring:<S2SV_blank>%d\\\\n\" , ( int ) ( args -> flags & I915_EXEC_RING_MASK ) ) ; return - EINVAL ; } mode = args -> flags & I915_EXEC_CONSTANTS_MASK ; mask = I915_EXEC_CONSTANTS_MASK ; switch ( mode ) { case I915_EXEC_CONSTANTS_REL_GENERAL : case I915_EXEC_CONSTANTS_ABSOLUTE : case I915_EXEC_CONSTANTS_REL_SURFACE : if ( ring == & dev_priv -> ring [ RCS ] && mode != dev_priv -> relative_constants_mode ) { if ( INTEL_INFO ( dev ) -> gen < 4 ) return - EINVAL ; if ( INTEL_INFO ( dev ) -> gen > 5 && mode == I915_EXEC_CONSTANTS_REL_SURFACE ) return - EINVAL ; if ( INTEL_INFO ( dev ) -> gen >= 6 ) mask &= ~ I915_EXEC_CONSTANTS_REL_SURFACE ; } break ; default : DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>unknown<S2SV_blank>constants:<S2SV_blank>%d\\\\n\" , mode ) ; return - EINVAL ; } if ( args -> buffer_count < 1 ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>%d<S2SV_blank>buffers\\\\n\" , args -> buffer_count ) ; return - EINVAL ; } if ( args -> num_cliprects != 0 ) { if ( ring != & dev_priv -> ring [ RCS ] ) { <S2SV_StartBug> DRM_DEBUG ( \"clip<S2SV_blank>rectangles<S2SV_blank>are<S2SV_blank>only<S2SV_blank>valid<S2SV_blank>with<S2SV_blank>the<S2SV_blank>render<S2SV_blank>ring\\\\n\" ) ; <S2SV_EndBug> return - EINVAL ; } cliprects = kmalloc ( args -> num_cliprects * sizeof ( * cliprects ) , GFP_KERNEL ) ; if ( cliprects == NULL ) { ret = - ENOMEM ; goto pre_mutex_err ; } if ( copy_from_user ( cliprects , ( struct drm_clip_rect __user * ) ( uintptr_t ) args -> cliprects_ptr , sizeof ( * cliprects ) * args -> num_cliprects ) ) { ret = - EFAULT ; goto pre_mutex_err ; } } ret = i915_mutex_lock_interruptible ( dev ) ; if ( ret ) goto pre_mutex_err ; if ( dev_priv -> mm . suspended ) { mutex_unlock ( & dev -> struct_mutex ) ; ret = - EBUSY ; goto pre_mutex_err ; } eb = eb_create ( args -> buffer_count ) ; if ( eb == NULL ) { mutex_unlock ( & dev -> struct_mutex ) ; ret = - ENOMEM ; goto pre_mutex_err ; } INIT_LIST_HEAD ( & objects ) ; for ( i = 0 ; i < args -> buffer_count ; i ++ ) { struct drm_i915_gem_object * obj ; obj = to_intel_bo ( drm_gem_object_lookup ( dev , file , exec [ i ] . handle ) ) ; if ( & obj -> base == NULL ) { DRM_DEBUG ( \"Invalid<S2SV_blank>object<S2SV_blank>handle<S2SV_blank>%d<S2SV_blank>at<S2SV_blank>index<S2SV_blank>%d\\\\n\" , exec [ i ] . handle , i ) ; ret = - ENOENT ; goto err ; } if ( ! list_empty ( & obj -> exec_list ) ) { DRM_DEBUG ( \"Object<S2SV_blank>%p<S2SV_blank>[handle<S2SV_blank>%d,<S2SV_blank>index<S2SV_blank>%d]<S2SV_blank>appears<S2SV_blank>more<S2SV_blank>than<S2SV_blank>once<S2SV_blank>in<S2SV_blank>object<S2SV_blank>list\\\\n\" , obj , exec [ i ] . handle , i ) ; ret = - EINVAL ; goto err ; } list_add_tail ( & obj -> exec_list , & objects ) ; obj -> exec_handle = exec [ i ] . handle ; obj -> exec_entry = & exec [ i ] ; eb_add_object ( eb , obj ) ; } batch_obj = list_entry ( objects . prev , struct drm_i915_gem_object , exec_list ) ; ret = i915_gem_execbuffer_reserve ( ring , file , & objects ) ; if ( ret ) goto err ; ret = i915_gem_execbuffer_relocate ( dev , eb , & objects ) ; if ( ret ) { if ( ret == - EFAULT ) { ret = i915_gem_execbuffer_relocate_slow ( dev , file , ring , & objects , eb , exec , args -> buffer_count ) ; BUG_ON ( ! mutex_is_locked ( & dev -> struct_mutex ) ) ; } if ( ret ) goto err ; } if ( batch_obj -> base . pending_write_domain ) { DRM_DEBUG ( \"Attempting<S2SV_blank>to<S2SV_blank>use<S2SV_blank>self-modifying<S2SV_blank>batch<S2SV_blank>buffer\\\\n\" ) ; ret = - EINVAL ; goto err ; } batch_obj -> base . pending_read_domains |= I915_GEM_DOMAIN_COMMAND ; ret = i915_gem_execbuffer_move_to_gpu ( ring , & objects ) ; if ( ret ) goto err ; seqno = i915_gem_next_request_seqno ( ring ) ; for ( i = 0 ; i < ARRAY_SIZE ( ring -> sync_seqno ) ; i ++ ) { if ( seqno < ring -> sync_seqno [ i ] ) { ret = i915_gpu_idle ( dev , true ) ; if ( ret ) goto err ; BUG_ON ( ring -> sync_seqno [ i ] ) ; } } if ( ring == & dev_priv -> ring [ RCS ] && mode != dev_priv -> relative_constants_mode ) { ret = intel_ring_begin ( ring , 4 ) ; if ( ret ) goto err ; intel_ring_emit ( ring , MI_NOOP ) ; intel_ring_emit ( ring , MI_LOAD_REGISTER_IMM ( 1 ) ) ; intel_ring_emit ( ring , INSTPM ) ; intel_ring_emit ( ring , mask << 16 | mode ) ; intel_ring_advance ( ring ) ; dev_priv -> relative_constants_mode = mode ; } if ( args -> flags & I915_EXEC_GEN7_SOL_RESET ) { ret = i915_reset_gen7_sol_offsets ( dev , ring ) ; if ( ret ) goto err ; } trace_i915_gem_ring_dispatch ( ring , seqno ) ; exec_start = batch_obj -> gtt_offset + args -> batch_start_offset ; exec_len = args -> batch_len ; if ( cliprects ) { for ( i = 0 ; i < args -> num_cliprects ; i ++ ) { ret = i915_emit_box ( dev , & cliprects [ i ] , args -> DR1 , args -> DR4 ) ; if ( ret ) goto err ; ret = ring -> dispatch_execbuffer ( ring , exec_start , exec_len ) ; if ( ret ) goto err ; } } else { ret = ring -> dispatch_execbuffer ( ring , exec_start , exec_len ) ; if ( ret ) goto err ; } i915_gem_execbuffer_move_to_active ( & objects , ring , seqno ) ; i915_gem_execbuffer_retire_commands ( dev , file , ring ) ; err : eb_destroy ( eb ) ; while ( ! list_empty ( & objects ) ) { struct drm_i915_gem_object * obj ; obj = list_first_entry ( & objects , struct drm_i915_gem_object , exec_list ) ; list_del_init ( & obj -> exec_list ) ; drm_gem_object_unreference ( & obj -> base ) ; } mutex_unlock ( & dev -> struct_mutex ) ; pre_mutex_err : kfree ( cliprects ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> DRM_DEBUG ( \"clip<S2SV_blank>rectangles<S2SV_blank>are<S2SV_blank>only<S2SV_blank>valid<S2SV_blank>with<S2SV_blank>the<S2SV_blank>render<S2SV_blank>ring\\\\n\" ) ; return - EINVAL ; } if ( args -> num_cliprects > UINT_MAX / sizeof ( * cliprects ) ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>%u<S2SV_blank>cliprects\\\\n\" , args -> num_cliprects\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_expr ( PyObject * obj , expr_ty * out , PyArena * arena ) { int isinstance ; PyObject * tmp = NULL ; int lineno ; int col_offset ; if ( obj == Py_None ) { * out = NULL ; return 0 ; } <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_lineno ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_lineno ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_int ( tmp , & lineno , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>expr\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_col_offset ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_col_offset ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & col_offset , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>expr\" ) ; return 1 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) BoolOp_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { boolop_ty op ; asdl_seq * values ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_op ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_op ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_boolop ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BoolOp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_values ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_values ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"BoolOp<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; values = _Ta3_asdl_seq_new ( len , arena ) ; if ( values == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"BoolOp<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( values , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BoolOp\" ) ; return 1 ; } * out = BoolOp ( op , values , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) BinOp_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty left ; operator_ty op ; expr_ty right ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_left ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_left ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & left , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"left\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BinOp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_op ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_op ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_operator ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BinOp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_right ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_right ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & right , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"right\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BinOp\" ) ; return 1 ; } * out = BinOp ( left , op , right , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) UnaryOp_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { unaryop_ty op ; expr_ty operand ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_op ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_op ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_unaryop ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>UnaryOp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_operand ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_operand ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & operand , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"operand\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>UnaryOp\" ) ; return 1 ; } * out = UnaryOp ( op , operand , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Lambda_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { arguments_ty args ; expr_ty body ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_args ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_args ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_arguments ( tmp , & args , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Lambda\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & body , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Lambda\" ) ; return 1 ; } * out = Lambda ( args , body , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) IfExp_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty test ; expr_ty body ; expr_ty orelse ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_test ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_test ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & test , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>IfExp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_body ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_body ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & body , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>IfExp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_orelse ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_orelse ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & orelse , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>IfExp\" ) ; return 1 ; } * out = IfExp ( test , body , orelse , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Dict_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * keys ; asdl_seq * values ; if ( _PyObject_HasAttrId ( obj , & PyId_keys ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_keys ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Dict<S2SV_blank>field<S2SV_blank>\\\\\"keys\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; keys = _Ta3_asdl_seq_new ( len , arena ) ; if ( keys == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Dict<S2SV_blank>field<S2SV_blank>\\\\\"keys\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( keys , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"keys\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Dict\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_values ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_values ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Dict<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; values = _Ta3_asdl_seq_new ( len , arena ) ; if ( values == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Dict<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( values , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Dict\" ) ; return 1 ; } * out = Dict ( keys , values , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Set_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * elts ; if ( _PyObject_HasAttrId ( obj , & PyId_elts ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_elts ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Set<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; elts = _Ta3_asdl_seq_new ( len , arena ) ; if ( elts == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Set<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( elts , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Set\" ) ; return 1 ; } * out = Set ( elts , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) ListComp_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty elt ; asdl_seq * generators ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_elt ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_elt ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & elt , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elt\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ListComp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_generators ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_generators ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ListComp<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; generators = _Ta3_asdl_seq_new ( len , arena ) ; if ( generators == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> comprehension_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_comprehension ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ListComp<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( generators , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ListComp\" ) ; return 1 ; } * out = ListComp ( elt , generators , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) SetComp_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty elt ; asdl_seq * generators ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_elt ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_elt ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & elt , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elt\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>SetComp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_generators ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_generators ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"SetComp<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; generators = _Ta3_asdl_seq_new ( len , arena ) ; if ( generators == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> comprehension_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_comprehension ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"SetComp<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( generators , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>SetComp\" ) ; return 1 ; } * out = SetComp ( elt , generators , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) DictComp_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty key ; expr_ty value ; asdl_seq * generators ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_key ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_key ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & key , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"key\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>DictComp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>DictComp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_generators ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_generators ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"DictComp<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; generators = _Ta3_asdl_seq_new ( len , arena ) ; if ( generators == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> comprehension_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_comprehension ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"DictComp<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( generators , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>DictComp\" ) ; return 1 ; } * out = DictComp ( key , value , generators , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) GeneratorExp_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty elt ; asdl_seq * generators ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_elt ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_elt ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & elt , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elt\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>GeneratorExp\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_generators ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_generators ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"GeneratorExp<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; generators = _Ta3_asdl_seq_new ( len , arena ) ; if ( generators == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> comprehension_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_comprehension ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"GeneratorExp<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( generators , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>GeneratorExp\" ) ; return 1 ; } * out = GeneratorExp ( elt , generators , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Await_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Await\" ) ; return 1 ; } * out = Await ( value , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Yield_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { value = NULL ; } * out = Yield ( value , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) YieldFrom_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>YieldFrom\" ) ; return 1 ; } * out = YieldFrom ( value , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Compare_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty left ; asdl_int_seq * ops ; asdl_seq * comparators ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_left ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_left ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & left , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"left\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Compare\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_ops ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_ops ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Compare<S2SV_blank>field<S2SV_blank>\\\\\"ops\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; ops = _Ta3_asdl_int_seq_new ( len , arena ) ; if ( ops == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> cmpop_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_cmpop ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Compare<S2SV_blank>field<S2SV_blank>\\\\\"ops\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( ops , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ops\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Compare\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_comparators ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_comparators ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Compare<S2SV_blank>field<S2SV_blank>\\\\\"comparators\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; comparators = _Ta3_asdl_seq_new ( len , arena ) ; if ( comparators == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Compare<S2SV_blank>field<S2SV_blank>\\\\\"comparators\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( comparators , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"comparators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Compare\" ) ; return 1 ; } * out = Compare ( left , ops , comparators , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Call_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty func ; asdl_seq * args ; asdl_seq * keywords ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_func ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_func ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & func , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"func\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Call\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_args ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_args ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Call<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; args = _Ta3_asdl_seq_new ( len , arena ) ; if ( args == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Call<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( args , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Call\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_keywords ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_keywords ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Call<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; keywords = _Ta3_asdl_seq_new ( len , arena ) ; if ( keywords == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> keyword_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_keyword ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Call<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( keywords , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Call\" ) ; return 1 ; } * out = Call ( func , args , keywords , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Num_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { object n ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_n ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_n ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_object ( tmp , & n , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"n\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Num\" ) ; return 1 ; } * out = Num ( n , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Str_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { string s ; string kind ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_s ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_s ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & s , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"s\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Str\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_kind ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_kind ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_string ( tmp , & kind , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"kind\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Str\" ) ; return 1 ; } * out = Str ( s , kind , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) FormattedValue_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; int conversion ; expr_ty format_spec ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FormattedValue\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_conversion ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_conversion ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & conversion , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { conversion = 0 ; } if ( exists_not_none ( obj , & PyId_format_spec ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_format_spec ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & format_spec , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { format_spec = NULL ; } * out = FormattedValue ( value , conversion , format_spec , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) JoinedStr_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * values ; if ( _PyObject_HasAttrId ( obj , & PyId_values ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_values ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"JoinedStr<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; values = _Ta3_asdl_seq_new ( len , arena ) ; if ( values == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"JoinedStr<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( values , i , value ) ; <S2SV_EndBug> } <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>JoinedStr\" ) ; return 1 ; } * out = JoinedStr ( values , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Bytes_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { bytes s ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_s ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_s ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_bytes ( tmp , & s , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"s\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Bytes\" ) ; return 1 ; } * out = Bytes ( s , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) NameConstant_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { singleton value ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_singleton ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>NameConstant\" ) ; return 1 ; } * out = NameConstant ( value , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Ellipsis_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { * out = Ellipsis ( lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Constant_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { constant value ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_constant ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Constant\" ) ; return 1 ; } * out = Constant ( value , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Attribute_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; identifier attr ; expr_context_ty ctx ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Attribute\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_attr ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_attr ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_identifier ( tmp , & attr , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"attr\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Attribute\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_ctx ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_ctx ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr_context ( tmp , & ctx , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Attribute\" ) ; return 1 ; } * out = Attribute ( value , attr , ctx , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Subscript_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; slice_ty slice ; expr_context_ty ctx ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Subscript\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_slice ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_slice ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_slice ( tmp , & slice , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"slice\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Subscript\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_ctx ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_ctx ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr_context ( tmp , & ctx , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Subscript\" ) ; return 1 ; } * out = Subscript ( value , slice , ctx , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Starred_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; expr_context_ty ctx ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Starred\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_ctx ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_ctx ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr_context ( tmp , & ctx , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Starred\" ) ; return 1 ; } * out = Starred ( value , ctx , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Name_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier id ; expr_context_ty ctx ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_id ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_id ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_identifier ( tmp , & id , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"id\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Name\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_ctx ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_ctx ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr_context ( tmp , & ctx , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Name\" ) ; return 1 ; } * out = Name ( id , ctx , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) List_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * elts ; expr_context_ty ctx ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_elts ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_elts ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"List<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; elts = _Ta3_asdl_seq_new ( len , arena ) ; if ( elts == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"List<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( elts , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>List\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_ctx ) ) { int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_ctx ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; res = obj2ast_expr_context ( tmp , & ctx , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>List\" ) ; return 1 ; } * out = List ( elts , ctx , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Tuple_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * elts ; expr_context_ty ctx ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_elts ) ) { <S2SV_EndBug> int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_elts ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Tuple<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; elts = _Ta3_asdl_seq_new ( len , arena ) ; if ( elts == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Tuple<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( elts , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Tuple\" ) ; <S2SV_EndBug> return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_ctx ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_ctx ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr_context ( tmp , & ctx , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Tuple\" ) ; return 1 ; } * out = Tuple ( elts , ctx , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>some<S2SV_blank>sort<S2SV_blank>of<S2SV_blank>expr,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%R\" , obj ) ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>expr\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_int ( tmp , & lineno , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_col_offset , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>expr\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & col_offset <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } isinstance <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_op , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BoolOp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_boolop ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_values , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BoolOp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_left , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"left\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BinOp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & left , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_op , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BinOp\" ) ; return 1 ; } else { int res ; res = obj2ast_operator ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_right , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"right\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>BinOp\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & right <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_op , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>UnaryOp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_unaryop ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_operand , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"operand\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>UnaryOp\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & operand <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_args , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Lambda\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_arguments ( tmp , & args , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Lambda\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & body <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_test , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>IfExp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>IfExp\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & body , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>IfExp\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & orelse , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = IfExp ( test , body , orelse , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Dict_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * keys ; asdl_seq * values ; if ( lookup_attr_id ( obj , & PyId_keys , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"keys\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Dict\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_values , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Dict\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } * out = Dict ( keys , values , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Set_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * elts ; if ( lookup_attr_id ( obj , & PyId_elts , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Set\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_elt , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elt\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ListComp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & elt , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_generators , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ListComp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { comprehension_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_elt , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elt\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>SetComp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & elt , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_generators , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>SetComp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { comprehension_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_key , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"key\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>DictComp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & key , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>DictComp\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & value <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_generators , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>DictComp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { comprehension_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_elt , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elt\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>GeneratorExp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & elt , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_generators , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"generators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>GeneratorExp\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { comprehension_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Await\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_expr <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; value = NULL ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_expr <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>YieldFrom\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_expr <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_left , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"left\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Compare\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & left , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_ops , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ops\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Compare\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { cmpop_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_comparators , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"comparators\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Compare\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_func , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"func\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Call\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & func , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_args , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Call\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_keywords , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Call\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { keyword_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_n , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"n\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Num\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_object <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_s , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"s\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Str\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_string <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } if <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FormattedValue\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_conversion , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; conversion = 0 ; } else { int res ; res = obj2ast_int ( tmp , & conversion , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_format_spec , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; format_spec = NULL ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> tmp , & format_spec , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = FormattedValue ( value , conversion , format_spec , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) JoinedStr_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * values ; if ( lookup_attr_id ( obj , & PyId_values , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"values\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>JoinedStr\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_s , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"s\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Bytes\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_bytes <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>NameConstant\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_singleton <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Constant\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_constant <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Attribute\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_attr , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"attr\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Attribute\" ) ; return 1 ; } else { int res ; res = obj2ast_identifier ( tmp , & attr <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_ctx , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Attribute\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; res = obj2ast_expr_context ( tmp , & ctx <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Subscript\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_slice , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"slice\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Subscript\" ) ; return 1 ; } else { int res ; res = obj2ast_slice ( tmp , & slice <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_ctx , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Subscript\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; res = obj2ast_expr_context ( tmp , & ctx <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Starred\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_ctx , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Starred\" ) ; return 1 ; } else { int res ; res = obj2ast_expr_context ( tmp , & ctx <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_id , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"id\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Name\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_identifier ( tmp , & id , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> obj , & PyId_ctx , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Name\" ) ; return 1 ; } else { int res ; res = obj2ast_expr_context ( tmp , & ctx <S2SV_ModEnd> , arena ) <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_elts , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>List\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_ctx , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>List\" ) ; return 1 ; } else { <S2SV_ModEnd> int res ; <S2SV_ModStart> int res ; <S2SV_ModEnd> res = obj2ast_expr_context <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } * <S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_elts , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"elts\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Tuple\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_ctx , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ctx\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Tuple\" ) ; return 1 ; } else { int res ; res = obj2ast_expr_context ( tmp , & ctx , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = Tuple ( elts , ctx , lineno , col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } PyErr_Format <S2SV_ModEnd> ( PyExc_TypeError , <S2SV_ModStart> ( PyExc_TypeError , \"expected<S2SV_blank>some<S2SV_blank>sort<S2SV_blank>of<S2SV_blank>expr,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%R\" , obj <S2SV_ModEnd> ) ; failed\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12902\n\n```\nCWE-125 static const char * <S2SV_StartBug> parse_field ( netdissect_options * ndo , const char * * pptr , int * len ) <S2SV_EndBug> { const char * s ; <S2SV_StartBug> if ( * len <= 0 || ! pptr || ! * pptr ) <S2SV_EndBug> return NULL ; if ( * pptr > ( const char * ) ndo -> ndo_snapend ) return NULL ; s = * pptr ; <S2SV_StartBug> while ( * pptr <= ( const char * ) ndo -> ndo_snapend && * len >= 0 && * * pptr ) { <S2SV_EndBug> ( * pptr ) ++ ; ( * len ) -- ; } ( * pptr ) ++ ; ( * len ) -- ; <S2SV_StartBug> if ( * len < 0 || * pptr > ( const char * ) ndo -> ndo_snapend ) <S2SV_EndBug> return NULL ; return s ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int * len , int * truncated <S2SV_ModStart> * s ; <S2SV_ModEnd> s = * <S2SV_ModStart> * pptr ; for ( ; ; ) { if ( * len == 0 ) { return NULL ; } if ( ! ND_TTEST ( <S2SV_ModEnd> * * pptr <S2SV_ModStart> * pptr ) ) { * truncated = 1 ; return NULL ; } if ( * * pptr == '\\\\0' ) { break ; } <S2SV_ModEnd> ( * pptr <S2SV_ModStart> ) -- ; <S2SV_ModEnd> return s ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4347\n\n```\nCWE-264 static int kvm_vm_ioctl_assign_device ( struct kvm * kvm , struct kvm_assigned_pci_dev * assigned_dev ) { int r = 0 , idx ; struct kvm_assigned_dev_kernel * match ; struct pci_dev * dev ; <S2SV_StartBug> if ( ! ( assigned_dev -> flags & KVM_DEV_ASSIGN_ENABLE_IOMMU ) ) <S2SV_EndBug> return - EINVAL ; mutex_lock ( & kvm -> lock ) ; idx = srcu_read_lock ( & kvm -> srcu ) ; match = kvm_find_assigned_dev ( & kvm -> arch . assigned_dev_head , assigned_dev -> assigned_dev_id ) ; if ( match ) { r = - EEXIST ; goto out ; } match = kzalloc ( sizeof ( struct kvm_assigned_dev_kernel ) , GFP_KERNEL ) ; if ( match == NULL ) { printk ( KERN_INFO \"%s:<S2SV_blank>Couldn\\'t<S2SV_blank>allocate<S2SV_blank>memory\\\\n\" , __func__ ) ; r = - ENOMEM ; goto out ; } dev = pci_get_domain_bus_and_slot ( assigned_dev -> segnr , assigned_dev -> busnr , assigned_dev -> devfn ) ; if ( ! dev ) { printk ( KERN_INFO \"%s:<S2SV_blank>host<S2SV_blank>device<S2SV_blank>not<S2SV_blank>found\\\\n\" , __func__ ) ; r = - EINVAL ; goto out_free ; } <S2SV_StartBug> if ( pci_enable_device ( dev ) ) { <S2SV_EndBug> printk ( KERN_INFO \"%s:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>enable<S2SV_blank>PCI<S2SV_blank>device\\\\n\" , __func__ ) ; r = - EBUSY ; goto out_put ; } r = pci_request_regions ( dev , \"kvm_assigned_device\" ) ; if ( r ) { printk ( KERN_INFO \"%s:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>access<S2SV_blank>to<S2SV_blank>device<S2SV_blank>regions\\\\n\" , __func__ ) ; goto out_disable ; } pci_reset_function ( dev ) ; pci_save_state ( dev ) ; match -> pci_saved_state = pci_store_saved_state ( dev ) ; if ( ! match -> pci_saved_state ) printk ( KERN_DEBUG \"%s:<S2SV_blank>Couldn\\'t<S2SV_blank>store<S2SV_blank>%s<S2SV_blank>saved<S2SV_blank>state\\\\n\" , __func__ , dev_name ( & dev -> dev ) ) ; match -> assigned_dev_id = assigned_dev -> assigned_dev_id ; match -> host_segnr = assigned_dev -> segnr ; match -> host_busnr = assigned_dev -> busnr ; match -> host_devfn = assigned_dev -> devfn ; match -> flags = assigned_dev -> flags ; match -> dev = dev ; spin_lock_init ( & match -> intx_lock ) ; match -> irq_source_id = - 1 ; match -> kvm = kvm ; match -> ack_notifier . irq_acked = kvm_assigned_dev_ack_irq ; list_add ( & match -> list , & kvm -> arch . assigned_dev_head ) ; if ( ! kvm -> arch . iommu_domain ) { r = kvm_iommu_map_guest ( kvm ) ; if ( r ) goto out_list_del ; } r = kvm_assign_device ( kvm , match ) ; if ( r ) goto out_list_del ; out : srcu_read_unlock ( & kvm -> srcu , idx ) ; mutex_unlock ( & kvm -> lock ) ; return r ; out_list_del : if ( pci_load_and_free_saved_state ( dev , & match -> pci_saved_state ) ) printk ( KERN_INFO \"%s:<S2SV_blank>Couldn\\'t<S2SV_blank>reload<S2SV_blank>%s<S2SV_blank>saved<S2SV_blank>state\\\\n\" , __func__ , dev_name ( & dev -> dev ) ) ; list_del ( & match -> list ) ; pci_release_regions ( dev ) ; out_disable : pci_disable_device ( dev ) ; out_put : pci_dev_put ( dev ) ; out_free : kfree ( match ) ; srcu_read_unlock ( & kvm -> srcu , idx ) ; mutex_unlock ( & kvm -> lock ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * dev ; u8 header_type ; <S2SV_ModStart> out_free ; } pci_read_config_byte ( dev , PCI_HEADER_TYPE , & header_type ) ; if ( ( header_type & PCI_HEADER_TYPE ) != PCI_HEADER_TYPE_NORMAL ) { r = - EPERM ; goto out_put ; } r = probe_sysfs_permissions ( dev ) ; if ( r ) goto out_put ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9016\n\n```\nCWE-362 static bool blk_kick_flush ( struct request_queue * q , struct blk_flush_queue * fq ) { struct list_head * pending = & fq -> flush_queue [ fq -> flush_pending_idx ] ; struct request * first_rq = list_first_entry ( pending , struct request , flush . list ) ; struct request * flush_rq = fq -> flush_rq ; if ( fq -> flush_pending_idx != fq -> flush_running_idx || list_empty ( pending ) ) return false ; if ( ! list_empty ( & fq -> flush_data_in_flight ) && time_before ( jiffies , fq -> flush_pending_since + FLUSH_PENDING_TIMEOUT ) ) return false ; fq -> flush_pending_idx ^= 1 ; blk_rq_init ( q , flush_rq ) ; if ( q -> mq_ops ) { <S2SV_StartBug> flush_rq -> mq_ctx = first_rq -> mq_ctx ; <S2SV_EndBug> <S2SV_StartBug> flush_rq -> tag = first_rq -> tag ; <S2SV_EndBug> } flush_rq -> cmd_type = REQ_TYPE_FS ; flush_rq -> cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ ; flush_rq -> rq_disk = first_rq -> rq_disk ; flush_rq -> end_io = flush_end_io ; return blk_flush_queue_rq ( flush_rq , false ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mq_ops ) { struct blk_mq_hw_ctx * hctx ; <S2SV_ModStart> first_rq -> tag ; fq -> orig_rq = first_rq ; hctx = q -> mq_ops -> map_queue ( q , first_rq -> mq_ctx -> cpu ) ; blk_mq_tag_set_rq ( hctx , first_rq -> tag , flush_rq )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 void kvm_lapic_sync_to_vapic ( struct kvm_vcpu * vcpu ) { u32 data , tpr ; int max_irr , max_isr ; <S2SV_StartBug> struct kvm_lapic * apic = vcpu -> arch . apic ; <S2SV_EndBug> void * vapic ; apic_sync_pv_eoi_to_guest ( vcpu , apic ) ; if ( ! test_bit ( KVM_APIC_CHECK_VAPIC , & vcpu -> arch . apic_attention ) ) return ; tpr = kvm_apic_get_reg ( apic , APIC_TASKPRI ) & 0xff ; max_irr = apic_find_highest_irr ( apic ) ; if ( max_irr < 0 ) max_irr = 0 ; max_isr = apic_find_highest_isr ( apic ) ; if ( max_isr < 0 ) max_isr = 0 ; data = ( tpr & 0xff ) | ( ( max_isr & 0xf0 ) << 8 ) | ( max_irr << 24 ) ; <S2SV_StartBug> vapic = kmap_atomic ( vcpu -> arch . apic -> vapic_page ) ; <S2SV_EndBug> * ( u32 * ) ( vapic + offset_in_page ( vcpu -> arch . apic -> vapic_addr ) ) = data ; kunmap_atomic ( vapic ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arch . apic <S2SV_ModEnd> ; apic_sync_pv_eoi_to_guest ( <S2SV_ModStart> 24 ) ; kvm_write_guest_cached ( vcpu -> kvm , & <S2SV_ModEnd> vcpu -> arch <S2SV_ModStart> . apic -> vapic_cache , & data , sizeof ( u32 ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0206\n\n```\nCWE-119 int dtls1_get_record ( SSL * s ) { int ssl_major , ssl_minor ; int i , n ; SSL3_RECORD * rr ; unsigned char * p = NULL ; unsigned short version ; DTLS1_BITMAP * bitmap ; unsigned int is_next_epoch ; rr = & ( s -> s3 -> rrec ) ; <S2SV_StartBug> dtls1_process_buffered_records ( s ) ; <S2SV_EndBug> if ( dtls1_get_processed_record ( s ) ) return 1 ; again : if ( ( s -> rstate != SSL_ST_READ_BODY ) || ( s -> packet_length < DTLS1_RT_HEADER_LENGTH ) ) { n = ssl3_read_n ( s , DTLS1_RT_HEADER_LENGTH , s -> s3 -> rbuf . len , 0 ) ; if ( n <= 0 ) return ( n ) ; if ( s -> packet_length != DTLS1_RT_HEADER_LENGTH ) { s -> packet_length = 0 ; goto again ; } s -> rstate = SSL_ST_READ_BODY ; p = s -> packet ; if ( s -> msg_callback ) s -> msg_callback ( 0 , 0 , SSL3_RT_HEADER , p , DTLS1_RT_HEADER_LENGTH , s , s -> msg_callback_arg ) ; rr -> type = * ( p ++ ) ; ssl_major = * ( p ++ ) ; ssl_minor = * ( p ++ ) ; version = ( ssl_major << 8 ) | ssl_minor ; n2s ( p , rr -> epoch ) ; memcpy ( & ( s -> s3 -> read_sequence [ 2 ] ) , p , 6 ) ; p += 6 ; n2s ( p , rr -> length ) ; if ( ! s -> first_packet ) { if ( version != s -> version ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( ( version & 0xff00 ) != ( s -> version & 0xff00 ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( rr -> length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( rr -> length > s -> packet_length - DTLS1_RT_HEADER_LENGTH ) { i = rr -> length ; n = ssl3_read_n ( s , i , i , 1 ) ; if ( n != i ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } s -> rstate = SSL_ST_READ_HEADER ; bitmap = dtls1_get_bitmap ( s , rr , & is_next_epoch ) ; if ( bitmap == NULL ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP if ( ! BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) ) { # endif if ( ! ( s -> d1 -> listen && rr -> type == SSL3_RT_HANDSHAKE && s -> packet_length > DTLS1_RT_HEADER_LENGTH && s -> packet [ DTLS1_RT_HEADER_LENGTH ] == SSL3_MT_CLIENT_HELLO ) && ! dtls1_record_replay_check ( s , bitmap ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP } # endif if ( rr -> length == 0 ) goto again ; if ( is_next_epoch ) { if ( ( SSL_in_init ( s ) || s -> in_handshake ) && ! s -> d1 -> listen ) { <S2SV_StartBug> dtls1_buffer_record ( s , & ( s -> d1 -> unprocessed_rcds ) , rr -> seq_num ) ; <S2SV_EndBug> } rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( ! dtls1_process_record ( s ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } <S2SV_StartBug> return ( 1 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rrec ) ; if ( <S2SV_ModStart> ( s ) < 0 ) return - 1 <S2SV_ModStart> listen ) { if ( <S2SV_ModStart> rr -> seq_num ) < 0 ) return - 1 ; dtls1_record_bitmap_update ( s , bitmap <S2SV_ModStart> again ; } dtls1_record_bitmap_update ( s , bitmap ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_image_t * decoder_get_frame ( vpx_codec_alg_priv_t * ctx , vpx_codec_iter_t * iter ) { vpx_image_t * img = NULL ; <S2SV_StartBug> if ( ctx -> img_avail ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! ( * iter ) ) { <S2SV_EndBug> img = & ctx -> img ; * iter = img ; } } ctx -> img_avail = 0 ; return img ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ctx -> frame_parallel_decode && ctx -> available_threads > 0 && ! ctx -> flushed ) { return NULL ; } if ( ctx -> num_cache_frames > 0 ) { release_last_output_frame ( ctx ) ; ctx -> last_show_frame = ctx -> frame_cache [ ctx -> frame_cache_read ] . fb_idx ; if ( ctx -> need_resync ) return NULL ; img = & ctx -> frame_cache [ ctx -> frame_cache_read ] . img ; ctx -> frame_cache_read = ( ctx -> frame_cache_read + 1 ) % FRAME_CACHE_SIZE ; -- ctx -> num_cache_frames ; return img ; } if <S2SV_ModEnd> ( * iter <S2SV_ModStart> ( * iter == NULL && ctx -> frame_workers != NULL ) { do { YV12_BUFFER_CONFIG sd ; vp9_ppflags_t flags = { 0 , 0 , 0 } ; const VPxWorkerInterface * const winterface = vpx_get_worker_interface ( ) ; VPxWorker * const worker = & ctx -> frame_workers [ ctx -> next_output_worker_id ] ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; ctx -> next_output_worker_id = ( ctx -> next_output_worker_id + 1 ) % ctx -> num_frame_workers ; if ( ctx -> base . init_flags & VPX_CODEC_USE_POSTPROC ) set_ppflags ( ctx , & flags ) ; if ( winterface -> sync ( worker ) ) { if ( frame_worker_data -> received_frame == 1 ) { ++ ctx -> available_threads ; frame_worker_data -> received_frame = 0 ; check_resync ( ctx , frame_worker_data -> pbi ) ; } if ( vp9_get_raw_frame ( frame_worker_data -> pbi , & sd , & flags ) == 0 ) { VP9_COMMON * const cm = & frame_worker_data -> pbi -> common ; RefCntBuffer * const frame_bufs = cm -> buffer_pool -> frame_bufs ; release_last_output_frame ( ctx ) ; ctx -> last_show_frame = frame_worker_data -> pbi -> common . new_fb_idx ; if ( ctx -> need_resync ) return NULL ; yuvconfig2image ( & ctx -> img , & sd , frame_worker_data -> user_priv ) ; ctx -> img . fb_priv = frame_bufs [ cm -> new_fb_idx ] . raw_frame_buffer . priv ; img = & ctx -> img ; return img ; } } else { frame_worker_data -> received_frame = 0 ; ++ ctx -> available_threads ; ctx -> need_resync = 1 ; if ( ctx -> flushed != 1 ) return NULL ; } } while ( ctx -> next_output_worker_id != ctx -> next_submit_worker_id ) ; } return NULL <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2647\n\n```\nCWE-476 key_ref_t keyring_search ( key_ref_t keyring , struct key_type * type , const char * description ) { struct keyring_search_context ctx = { . index_key . type = type , . index_key . description = description , . cred = current_cred ( ) , <S2SV_StartBug> . match_data . cmp = type -> match , <S2SV_EndBug> . match_data . raw_data = description , . match_data . lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT , . flags = KEYRING_SEARCH_DO_STATE_CHECK , } ; key_ref_t key ; <S2SV_StartBug> int ret ; <S2SV_EndBug> if ( ! ctx . match_data . cmp ) return ERR_PTR ( - ENOKEY ) ; if ( type -> match_preparse ) { ret = type -> match_preparse ( & ctx . match_data ) ; if ( ret < 0 ) return ERR_PTR ( ret ) ; } key = keyring_search_aux ( keyring , & ctx ) ; if ( type -> match_free ) type -> match_free ( & ctx . match_data ) ; return key ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . cmp = key_default_cmp <S2SV_ModEnd> , . match_data <S2SV_ModStart> ; int ret <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum hstore_from_array ( PG_FUNCTION_ARGS ) { ArrayType * in_array = PG_GETARG_ARRAYTYPE_P ( 0 ) ; int ndims = ARR_NDIM ( in_array ) ; int count ; int32 buflen ; HStore * out ; Pairs * pairs ; Datum * in_datums ; bool * in_nulls ; int in_count ; int i ; Assert ( ARR_ELEMTYPE ( in_array ) == TEXTOID ) ; switch ( ndims ) { case 0 : out = hstorePairs ( NULL , 0 , 0 ) ; PG_RETURN_POINTER ( out ) ; case 1 : if ( ( ARR_DIMS ( in_array ) [ 0 ] ) % 2 ) ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"array<S2SV_blank>must<S2SV_blank>have<S2SV_blank>even<S2SV_blank>number<S2SV_blank>of<S2SV_blank>elements\" ) ) ) ; break ; case 2 : if ( ( ARR_DIMS ( in_array ) [ 1 ] ) != 2 ) ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"array<S2SV_blank>must<S2SV_blank>have<S2SV_blank>two<S2SV_blank>columns\" ) ) ) ; break ; default : ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"wrong<S2SV_blank>number<S2SV_blank>of<S2SV_blank>array<S2SV_blank>subscripts\" ) ) ) ; } deconstruct_array ( in_array , TEXTOID , - 1 , false , 'i' , & in_datums , & in_nulls , & in_count ) ; count = in_count / 2 ; <S2SV_StartBug> pairs = palloc ( count * sizeof ( Pairs ) ) ; <S2SV_EndBug> for ( i = 0 ; i < count ; ++ i ) { if ( in_nulls [ i * 2 ] ) ereport ( ERROR , ( errcode ( ERRCODE_NULL_VALUE_NOT_ALLOWED ) , errmsg ( \"null<S2SV_blank>value<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>for<S2SV_blank>hstore<S2SV_blank>key\" ) ) ) ; if ( in_nulls [ i * 2 + 1 ] ) { pairs [ i ] . key = VARDATA_ANY ( in_datums [ i * 2 ] ) ; pairs [ i ] . val = NULL ; pairs [ i ] . keylen = hstoreCheckKeyLen ( VARSIZE_ANY_EXHDR ( in_datums [ i * 2 ] ) ) ; pairs [ i ] . vallen = 4 ; pairs [ i ] . isnull = true ; pairs [ i ] . needfree = false ; } else { pairs [ i ] . key = VARDATA_ANY ( in_datums [ i * 2 ] ) ; pairs [ i ] . val = VARDATA_ANY ( in_datums [ i * 2 + 1 ] ) ; pairs [ i ] . keylen = hstoreCheckKeyLen ( VARSIZE_ANY_EXHDR ( in_datums [ i * 2 ] ) ) ; pairs [ i ] . vallen = hstoreCheckValLen ( VARSIZE_ANY_EXHDR ( in_datums [ i * 2 + 1 ] ) ) ; pairs [ i ] . isnull = false ; pairs [ i ] . needfree = false ; } } count = hstoreUniquePairs ( pairs , count , & buflen ) ; out = hstorePairs ( pairs , count , buflen ) ; PG_RETURN_POINTER ( out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> / 2 ; if ( count > MaxAllocSize / sizeof ( Pairs ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>pairs<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , count , ( int ) ( MaxAllocSize / sizeof ( Pairs ) ) ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 static int sc_pkcs15emu_sc_hsm_init ( sc_pkcs15_card_t * p15card ) { sc_card_t * card = p15card -> card ; sc_hsm_private_data_t * priv = ( sc_hsm_private_data_t * ) card -> drv_data ; sc_file_t * file = NULL ; sc_path_t path ; u8 filelist [ MAX_EXT_APDU_LENGTH ] ; int filelistlength ; int r , i ; sc_cvc_t devcert ; struct sc_app_info * appinfo ; struct sc_pkcs15_auth_info pin_info ; struct sc_pkcs15_object pin_obj ; struct sc_pin_cmd_data pindata ; u8 efbin [ 1024 ] ; u8 * ptr ; size_t len ; LOG_FUNC_CALLED ( card -> ctx ) ; appinfo = calloc ( 1 , sizeof ( struct sc_app_info ) ) ; if ( appinfo == NULL ) { LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; } appinfo -> aid = sc_hsm_aid ; appinfo -> ddo . aid = sc_hsm_aid ; p15card -> app = appinfo ; sc_path_set ( & path , SC_PATH_TYPE_DF_NAME , sc_hsm_aid . value , sc_hsm_aid . len , 0 , 0 ) ; r = sc_select_file ( card , & path , & file ) ; LOG_TEST_RET ( card -> ctx , r , \"Could<S2SV_blank>not<S2SV_blank>select<S2SV_blank>SmartCard-HSM<S2SV_blank>application\" ) ; p15card -> card -> version . hw_major = 24 ; p15card -> card -> version . hw_minor = 13 ; if ( file && file -> prop_attr && file -> prop_attr_len >= 2 ) { p15card -> card -> version . fw_major = file -> prop_attr [ file -> prop_attr_len - 2 ] ; p15card -> card -> version . fw_minor = file -> prop_attr [ file -> prop_attr_len - 1 ] ; } sc_file_free ( file ) ; if ( priv -> EF_C_DevAut && priv -> EF_C_DevAut_len ) { ptr = priv -> EF_C_DevAut ; len = priv -> EF_C_DevAut_len ; } else { len = sizeof efbin ; r = read_file ( p15card , ( u8 * ) \"\\\\x2F\\\\x02\" , efbin , & len , 1 ) ; LOG_TEST_RET ( card -> ctx , r , \"Skipping<S2SV_blank>optional<S2SV_blank>EF.C_DevAut\" ) ; <S2SV_StartBug> ptr = realloc ( priv -> EF_C_DevAut , len ) ; <S2SV_EndBug> if ( ptr ) { memcpy ( ptr , efbin , len ) ; priv -> EF_C_DevAut = ptr ; <S2SV_StartBug> priv -> EF_C_DevAut_len = len ; <S2SV_EndBug> } ptr = efbin ; } memset ( & devcert , 0 , sizeof ( devcert ) ) ; r = sc_pkcs15emu_sc_hsm_decode_cvc ( p15card , ( const u8 * * ) & ptr , & len , & devcert ) ; LOG_TEST_RET ( card -> ctx , r , \"Could<S2SV_blank>not<S2SV_blank>decode<S2SV_blank>EF.C_DevAut\" ) ; sc_pkcs15emu_sc_hsm_read_tokeninfo ( p15card ) ; if ( p15card -> tokeninfo -> label == NULL ) { if ( p15card -> card -> type == SC_CARD_TYPE_SC_HSM_GOID || p15card -> card -> type == SC_CARD_TYPE_SC_HSM_SOC ) { p15card -> tokeninfo -> label = strdup ( \"GoID\" ) ; } else { p15card -> tokeninfo -> label = strdup ( \"SmartCard-HSM\" ) ; } if ( p15card -> tokeninfo -> label == NULL ) LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; } if ( ( p15card -> tokeninfo -> manufacturer_id != NULL ) && ! strcmp ( \"(unknown)\" , p15card -> tokeninfo -> manufacturer_id ) ) { free ( p15card -> tokeninfo -> manufacturer_id ) ; p15card -> tokeninfo -> manufacturer_id = NULL ; } if ( p15card -> tokeninfo -> manufacturer_id == NULL ) { if ( p15card -> card -> type == SC_CARD_TYPE_SC_HSM_GOID || p15card -> card -> type == SC_CARD_TYPE_SC_HSM_SOC ) { p15card -> tokeninfo -> manufacturer_id = strdup ( \"Bundesdruckerei<S2SV_blank>GmbH\" ) ; } else { p15card -> tokeninfo -> manufacturer_id = strdup ( \"www.CardContact.de\" ) ; } if ( p15card -> tokeninfo -> manufacturer_id == NULL ) LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; } appinfo -> label = strdup ( p15card -> tokeninfo -> label ) ; if ( appinfo -> label == NULL ) LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; len = strnlen ( devcert . chr , sizeof devcert . chr ) ; assert ( len >= 8 ) ; len -= 5 ; p15card -> tokeninfo -> serial_number = calloc ( len + 1 , 1 ) ; if ( p15card -> tokeninfo -> serial_number == NULL ) LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; memcpy ( p15card -> tokeninfo -> serial_number , devcert . chr , len ) ; * ( p15card -> tokeninfo -> serial_number + len ) = 0 ; sc_hsm_set_serialnr ( card , p15card -> tokeninfo -> serial_number ) ; sc_pkcs15emu_sc_hsm_free_cvc ( & devcert ) ; memset ( & pin_info , 0 , sizeof ( pin_info ) ) ; memset ( & pin_obj , 0 , sizeof ( pin_obj ) ) ; pin_info . auth_id . len = 1 ; pin_info . auth_id . value [ 0 ] = 1 ; pin_info . path . aid = sc_hsm_aid ; pin_info . auth_type = SC_PKCS15_PIN_AUTH_TYPE_PIN ; pin_info . attrs . pin . reference = 0x81 ; pin_info . attrs . pin . flags = SC_PKCS15_PIN_FLAG_LOCAL | SC_PKCS15_PIN_FLAG_INITIALIZED | SC_PKCS15_PIN_FLAG_EXCHANGE_REF_DATA ; pin_info . attrs . pin . type = SC_PKCS15_PIN_TYPE_ASCII_NUMERIC ; pin_info . attrs . pin . min_length = 6 ; pin_info . attrs . pin . stored_length = 0 ; pin_info . attrs . pin . max_length = 15 ; pin_info . attrs . pin . pad_char = '\\\\0' ; pin_info . tries_left = 3 ; pin_info . max_tries = 3 ; pin_obj . auth_id . len = 1 ; pin_obj . auth_id . value [ 0 ] = 2 ; strlcpy ( pin_obj . label , \"UserPIN\" , sizeof ( pin_obj . label ) ) ; pin_obj . flags = SC_PKCS15_CO_FLAG_PRIVATE | SC_PKCS15_CO_FLAG_MODIFIABLE ; r = sc_pkcs15emu_add_pin_obj ( p15card , & pin_obj , & pin_info ) ; if ( r < 0 ) LOG_FUNC_RETURN ( card -> ctx , r ) ; memset ( & pin_info , 0 , sizeof ( pin_info ) ) ; memset ( & pin_obj , 0 , sizeof ( pin_obj ) ) ; pin_info . auth_id . len = 1 ; pin_info . auth_id . value [ 0 ] = 2 ; pin_info . path . aid = sc_hsm_aid ; pin_info . auth_type = SC_PKCS15_PIN_AUTH_TYPE_PIN ; pin_info . attrs . pin . reference = 0x88 ; pin_info . attrs . pin . flags = SC_PKCS15_PIN_FLAG_LOCAL | SC_PKCS15_PIN_FLAG_INITIALIZED | SC_PKCS15_PIN_FLAG_UNBLOCK_DISABLED | SC_PKCS15_PIN_FLAG_SO_PIN ; pin_info . attrs . pin . type = SC_PKCS15_PIN_TYPE_BCD ; pin_info . attrs . pin . min_length = 16 ; pin_info . attrs . pin . stored_length = 0 ; pin_info . attrs . pin . max_length = 16 ; pin_info . attrs . pin . pad_char = '\\\\0' ; pin_info . tries_left = 15 ; pin_info . max_tries = 15 ; strlcpy ( pin_obj . label , \"SOPIN\" , sizeof ( pin_obj . label ) ) ; pin_obj . flags = SC_PKCS15_CO_FLAG_PRIVATE ; r = sc_pkcs15emu_add_pin_obj ( p15card , & pin_obj , & pin_info ) ; if ( r < 0 ) LOG_FUNC_RETURN ( card -> ctx , r ) ; if ( card -> type == SC_CARD_TYPE_SC_HSM_SOC || card -> type == SC_CARD_TYPE_SC_HSM_GOID ) { r = SC_SUCCESS ; } else { memset ( & pindata , 0 , sizeof ( pindata ) ) ; pindata . cmd = SC_PIN_CMD_GET_INFO ; pindata . pin_type = SC_AC_CHV ; pindata . pin_reference = 0x85 ; r = sc_pin_cmd ( card , & pindata , NULL ) ; } if ( r == SC_ERROR_DATA_OBJECT_NOT_FOUND ) { memset ( & pindata , 0 , sizeof ( pindata ) ) ; pindata . cmd = SC_PIN_CMD_GET_INFO ; pindata . pin_type = SC_AC_CHV ; pindata . pin_reference = 0x86 ; r = sc_pin_cmd ( card , & pindata , NULL ) ; } if ( ( r != SC_ERROR_DATA_OBJECT_NOT_FOUND ) && ( r != SC_ERROR_INCORRECT_PARAMETERS ) ) card -> caps |= SC_CARD_CAP_PROTECTED_AUTHENTICATION_PATH ; filelistlength = sc_list_files ( card , filelist , sizeof ( filelist ) ) ; LOG_TEST_RET ( card -> ctx , filelistlength , \"Could<S2SV_blank>not<S2SV_blank>enumerate<S2SV_blank>file<S2SV_blank>and<S2SV_blank>key<S2SV_blank>identifier\" ) ; for ( i = 0 ; i < filelistlength ; i += 2 ) { switch ( filelist [ i ] ) { case KEY_PREFIX : r = sc_pkcs15emu_sc_hsm_add_prkd ( p15card , filelist [ i + 1 ] ) ; break ; case DCOD_PREFIX : r = sc_pkcs15emu_sc_hsm_add_dcod ( p15card , filelist [ i + 1 ] ) ; break ; case CD_PREFIX : r = sc_pkcs15emu_sc_hsm_add_cd ( p15card , filelist [ i + 1 ] ) ; break ; } if ( r != SC_SUCCESS ) { sc_log ( card -> ctx , \"Error<S2SV_blank>%d<S2SV_blank>adding<S2SV_blank>elements<S2SV_blank>to<S2SV_blank>framework\" , r ) ; } } LOG_FUNC_RETURN ( card -> ctx , SC_SUCCESS ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Skipping<S2SV_blank>optional<S2SV_blank>EF.C_DevAut\" ) ; if ( len > 0 ) { <S2SV_ModStart> = len ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7412\n\n```\nCWE-119 enum_func_status php_mysqlnd_rowp_read_text_protocol_aux ( MYSQLND_MEMORY_POOL_CHUNK * row_buffer , zval * * fields , unsigned int field_count , const MYSQLND_FIELD * fields_metadata , zend_bool as_int_or_float , zend_bool copy_data , MYSQLND_STATS * stats TSRMLS_DC ) { unsigned int i ; zend_bool last_field_was_string = FALSE ; zval * * current_field , * * end_field , * * start_field ; zend_uchar * p = row_buffer -> ptr ; size_t data_size = row_buffer -> app ; zend_uchar * bit_area = ( zend_uchar * ) row_buffer -> ptr + data_size + 1 ; <S2SV_StartBug> DBG_ENTER ( \"php_mysqlnd_rowp_read_text_protocol_aux\" ) ; <S2SV_EndBug> if ( ! fields ) { DBG_RETURN ( FAIL ) ; } end_field = ( start_field = fields ) + field_count ; for ( i = 0 , current_field = start_field ; current_field < end_field ; current_field ++ , i ++ ) { DBG_INF ( \"Directly<S2SV_blank>creating<S2SV_blank>zval\" ) ; MAKE_STD_ZVAL ( * current_field ) ; if ( ! * current_field ) { DBG_RETURN ( FAIL ) ; } } for ( i = 0 , current_field = start_field ; current_field < end_field ; current_field ++ , i ++ ) { zend_uchar * this_field_len_pos = p ; <S2SV_StartBug> unsigned long len = php_mysqlnd_net_field_length ( & p ) ; <S2SV_EndBug> if ( copy_data == FALSE && current_field > start_field && last_field_was_string ) { * this_field_len_pos = '\\\\0' ; } if ( len == MYSQLND_NULL_LENGTH ) { ZVAL_NULL ( * current_field ) ; last_field_was_string = FALSE ; } else { # if defined ( MYSQLND_STRING_TO_INT_CONVERSION ) struct st_mysqlnd_perm_bind perm_bind = mysqlnd_ps_fetch_functions [ fields_metadata [ i ] . type ] ; # endif if ( MYSQLND_G ( collect_statistics ) ) { enum_mysqlnd_collected_stats statistic ; switch ( fields_metadata [ i ] . type ) { case MYSQL_TYPE_DECIMAL : statistic = STAT_TEXT_TYPE_FETCHED_DECIMAL ; break ; case MYSQL_TYPE_TINY : statistic = STAT_TEXT_TYPE_FETCHED_INT8 ; break ; case MYSQL_TYPE_SHORT : statistic = STAT_TEXT_TYPE_FETCHED_INT16 ; break ; case MYSQL_TYPE_LONG : statistic = STAT_TEXT_TYPE_FETCHED_INT32 ; break ; case MYSQL_TYPE_FLOAT : statistic = STAT_TEXT_TYPE_FETCHED_FLOAT ; break ; case MYSQL_TYPE_DOUBLE : statistic = STAT_TEXT_TYPE_FETCHED_DOUBLE ; break ; case MYSQL_TYPE_NULL : statistic = STAT_TEXT_TYPE_FETCHED_NULL ; break ; case MYSQL_TYPE_TIMESTAMP : statistic = STAT_TEXT_TYPE_FETCHED_TIMESTAMP ; break ; case MYSQL_TYPE_LONGLONG : statistic = STAT_TEXT_TYPE_FETCHED_INT64 ; break ; case MYSQL_TYPE_INT24 : statistic = STAT_TEXT_TYPE_FETCHED_INT24 ; break ; case MYSQL_TYPE_DATE : statistic = STAT_TEXT_TYPE_FETCHED_DATE ; break ; case MYSQL_TYPE_TIME : statistic = STAT_TEXT_TYPE_FETCHED_TIME ; break ; case MYSQL_TYPE_DATETIME : statistic = STAT_TEXT_TYPE_FETCHED_DATETIME ; break ; case MYSQL_TYPE_YEAR : statistic = STAT_TEXT_TYPE_FETCHED_YEAR ; break ; case MYSQL_TYPE_NEWDATE : statistic = STAT_TEXT_TYPE_FETCHED_DATE ; break ; case MYSQL_TYPE_VARCHAR : statistic = STAT_TEXT_TYPE_FETCHED_STRING ; break ; case MYSQL_TYPE_BIT : statistic = STAT_TEXT_TYPE_FETCHED_BIT ; break ; case MYSQL_TYPE_NEWDECIMAL : statistic = STAT_TEXT_TYPE_FETCHED_DECIMAL ; break ; case MYSQL_TYPE_ENUM : statistic = STAT_TEXT_TYPE_FETCHED_ENUM ; break ; case MYSQL_TYPE_SET : statistic = STAT_TEXT_TYPE_FETCHED_SET ; break ; case MYSQL_TYPE_JSON : statistic = STAT_TEXT_TYPE_FETCHED_JSON ; break ; case MYSQL_TYPE_TINY_BLOB : statistic = STAT_TEXT_TYPE_FETCHED_BLOB ; break ; case MYSQL_TYPE_MEDIUM_BLOB : statistic = STAT_TEXT_TYPE_FETCHED_BLOB ; break ; case MYSQL_TYPE_LONG_BLOB : statistic = STAT_TEXT_TYPE_FETCHED_BLOB ; break ; case MYSQL_TYPE_BLOB : statistic = STAT_TEXT_TYPE_FETCHED_BLOB ; break ; case MYSQL_TYPE_VAR_STRING : statistic = STAT_TEXT_TYPE_FETCHED_STRING ; break ; case MYSQL_TYPE_STRING : statistic = STAT_TEXT_TYPE_FETCHED_STRING ; break ; case MYSQL_TYPE_GEOMETRY : statistic = STAT_TEXT_TYPE_FETCHED_GEOMETRY ; break ; default : statistic = STAT_TEXT_TYPE_FETCHED_OTHER ; break ; } MYSQLND_INC_CONN_STATISTIC_W_VALUE2 ( stats , statistic , 1 , STAT_BYTES_RECEIVED_PURE_DATA_TEXT , len ) ; } # ifdef MYSQLND_STRING_TO_INT_CONVERSION if ( as_int_or_float && perm_bind . php_type == IS_LONG ) { zend_uchar save = * ( p + len ) ; * ( p + len ) = '\\\\0' ; if ( perm_bind . pack_len < SIZEOF_LONG ) { int64_t v = # ifndef PHP_WIN32 atoll ( ( char * ) p ) ; # else _atoi64 ( ( char * ) p ) ; # endif ZVAL_LONG ( * current_field , ( long ) v ) ; } else { uint64_t v = # ifndef PHP_WIN32 ( uint64_t ) atoll ( ( char * ) p ) ; # else ( uint64_t ) _atoi64 ( ( char * ) p ) ; # endif zend_bool uns = fields_metadata [ i ] . flags & UNSIGNED_FLAG ? TRUE : FALSE ; # if SIZEOF_LONG == 8 if ( uns == TRUE && v > 9223372036854775807L ) # elif SIZEOF_LONG == 4 if ( ( uns == TRUE && v > L64 ( 2147483647 ) ) || ( uns == FALSE && ( ( L64 ( 2147483647 ) < ( int64_t ) v ) || ( L64 ( - 2147483648 ) > ( int64_t ) v ) ) ) ) # else # error Need fix for this architecture # endif { ZVAL_STRINGL ( * current_field , ( char * ) p , len , 0 ) ; } else { ZVAL_LONG ( * current_field , ( long ) v ) ; } } * ( p + len ) = save ; } else if ( as_int_or_float && perm_bind . php_type == IS_DOUBLE ) { zend_uchar save = * ( p + len ) ; * ( p + len ) = '\\\\0' ; ZVAL_DOUBLE ( * current_field , atof ( ( char * ) p ) ) ; * ( p + len ) = save ; } else # endif if ( fields_metadata [ i ] . type == MYSQL_TYPE_BIT ) { zend_uchar * start = bit_area ; ps_fetch_from_1_to_8_bytes ( * current_field , & ( fields_metadata [ i ] ) , 0 , & p , len TSRMLS_CC ) ; p -= len ; if ( Z_TYPE_PP ( current_field ) == IS_LONG ) { bit_area += 1 + sprintf ( ( char * ) start , \"%ld\" , Z_LVAL_PP ( current_field ) ) ; ZVAL_STRINGL ( * current_field , ( char * ) start , bit_area - start - 1 , copy_data ) ; } else if ( Z_TYPE_PP ( current_field ) == IS_STRING ) { memcpy ( bit_area , Z_STRVAL_PP ( current_field ) , Z_STRLEN_PP ( current_field ) ) ; bit_area += Z_STRLEN_PP ( current_field ) ; * bit_area ++ = '\\\\0' ; zval_dtor ( * current_field ) ; ZVAL_STRINGL ( * current_field , ( char * ) start , bit_area - start - 1 , copy_data ) ; } } else { ZVAL_STRINGL ( * current_field , ( char * ) p , len , copy_data ) ; } p += len ; last_field_was_string = TRUE ; } } if ( copy_data == FALSE && last_field_was_string ) { row_buffer -> ptr [ data_size ] = '\\\\0' ; } DBG_RETURN ( PASS ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 1 ; const zend_uchar * const packet_end = ( zend_uchar * ) row_buffer -> ptr + data_size ; <S2SV_ModStart> = p ; const <S2SV_ModStart> p ) ; if ( len != MYSQLND_NULL_LENGTH && ( ( p + len ) > packet_end ) ) { php_error_docref ( NULL , E_WARNING , \"Malformed<S2SV_blank>server<S2SV_blank>packet.<S2SV_blank>Field<S2SV_blank>length<S2SV_blank>pointing<S2SV_blank>\" MYSQLND_SZ_T_SPEC \"<S2SV_blank>bytes<S2SV_blank>after<S2SV_blank>end<S2SV_blank>of<S2SV_blank>packet\" , ( p + len ) - packet_end - 1 ) ; DBG_RETURN ( FAIL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_set_segment_data ( struct segmentation * seg , signed char * feature_data , unsigned char abs_delta ) { seg -> abs_delta = abs_delta ; <S2SV_StartBug> vpx_memcpy ( seg -> feature_data , feature_data , sizeof ( seg -> feature_data ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = abs_delta ; memcpy <S2SV_ModEnd> ( seg ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 static mode_t set_umask ( const char * optarg ) { long umask_long ; mode_t umask_val ; char * endptr ; umask_long = strtoll ( optarg , & endptr , 0 ) ; if ( * endptr || umask_long < 0 || umask_long & ~ 0777L ) { fprintf ( stderr , \"Invalid<S2SV_blank>--umask<S2SV_blank>option<S2SV_blank>%s\" , optarg ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } umask_val = umask_long & 0777 ; umask ( umask_val ) ; umask_cmdline = true ; return umask_val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5333\n\n```\nCWE-476 int rds_cmsg_atomic ( struct rds_sock * rs , struct rds_message * rm , struct cmsghdr * cmsg ) { struct page * page = NULL ; struct rds_atomic_args * args ; int ret = 0 ; if ( cmsg -> cmsg_len < CMSG_LEN ( sizeof ( struct rds_atomic_args ) ) || rm -> atomic . op_active ) return - EINVAL ; args = CMSG_DATA ( cmsg ) ; switch ( cmsg -> cmsg_type ) { case RDS_CMSG_ATOMIC_FADD : rm -> atomic . op_type = RDS_ATOMIC_TYPE_FADD ; rm -> atomic . op_m_fadd . add = args -> fadd . add ; rm -> atomic . op_m_fadd . nocarry_mask = 0 ; break ; case RDS_CMSG_MASKED_ATOMIC_FADD : rm -> atomic . op_type = RDS_ATOMIC_TYPE_FADD ; rm -> atomic . op_m_fadd . add = args -> m_fadd . add ; rm -> atomic . op_m_fadd . nocarry_mask = args -> m_fadd . nocarry_mask ; break ; case RDS_CMSG_ATOMIC_CSWP : rm -> atomic . op_type = RDS_ATOMIC_TYPE_CSWP ; rm -> atomic . op_m_cswp . compare = args -> cswp . compare ; rm -> atomic . op_m_cswp . swap = args -> cswp . swap ; rm -> atomic . op_m_cswp . compare_mask = ~ 0 ; rm -> atomic . op_m_cswp . swap_mask = ~ 0 ; break ; case RDS_CMSG_MASKED_ATOMIC_CSWP : rm -> atomic . op_type = RDS_ATOMIC_TYPE_CSWP ; rm -> atomic . op_m_cswp . compare = args -> m_cswp . compare ; rm -> atomic . op_m_cswp . swap = args -> m_cswp . swap ; rm -> atomic . op_m_cswp . compare_mask = args -> m_cswp . compare_mask ; rm -> atomic . op_m_cswp . swap_mask = args -> m_cswp . swap_mask ; break ; default : BUG ( ) ; } rm -> atomic . op_notify = ! ! ( args -> flags & RDS_RDMA_NOTIFY_ME ) ; rm -> atomic . op_silent = ! ! ( args -> flags & RDS_RDMA_SILENT ) ; rm -> atomic . op_active = 1 ; rm -> atomic . op_recverr = rs -> rs_recverr ; rm -> atomic . op_sg = rds_message_alloc_sgs ( rm , 1 ) ; if ( ! rm -> atomic . op_sg ) { ret = - ENOMEM ; goto err ; } if ( args -> local_addr & 0x7 ) { ret = - EFAULT ; goto err ; } ret = rds_pin_pages ( args -> local_addr , 1 , & page , 1 ) ; if ( ret != 1 ) goto err ; ret = 0 ; sg_set_page ( rm -> atomic . op_sg , page , 8 , offset_in_page ( args -> local_addr ) ) ; if ( rm -> atomic . op_notify || rm -> atomic . op_recverr ) { rm -> atomic . op_notifier = kmalloc ( sizeof ( * rm -> atomic . op_notifier ) , GFP_KERNEL ) ; if ( ! rm -> atomic . op_notifier ) { ret = - ENOMEM ; goto err ; } rm -> atomic . op_notifier -> n_user_token = args -> user_token ; rm -> atomic . op_notifier -> n_status = RDS_RDMA_SUCCESS ; } rm -> atomic . op_rkey = rds_rdma_cookie_key ( args -> cookie ) ; rm -> atomic . op_remote_addr = args -> remote_addr + rds_rdma_cookie_offset ( args -> cookie ) ; return ret ; err : if ( page ) put_page ( page ) ; <S2SV_StartBug> kfree ( rm -> atomic . op_notifier ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> page ) ; rm -> atomic . op_active = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14351\n\n```\nCWE-20 static void cmd_parse_status ( struct ImapData * idata , char * s ) { char * value = NULL ; struct Buffy * inc = NULL ; struct ImapMbox mx ; struct ImapStatus * status = NULL ; unsigned int olduv , oldun ; unsigned int litlen ; short new = 0 ; short new_msg_count = 0 ; char * mailbox = imap_next_word ( s ) ; if ( imap_get_literal_count ( mailbox , & litlen ) == 0 ) { if ( imap_cmd_step ( idata ) != IMAP_CMD_CONTINUE ) { <S2SV_StartBug> idata -> status = IMAP_FATAL ; <S2SV_EndBug> return ; } mailbox = idata -> buf ; s = mailbox + litlen ; * s = '\\\\0' ; s ++ ; SKIPWS ( s ) ; } else { s = imap_next_word ( mailbox ) ; * ( s - 1 ) = '\\\\0' ; imap_unmunge_mbox_name ( idata , mailbox ) ; } status = imap_mboxcache_get ( idata , mailbox , 1 ) ; olduv = status -> uidvalidity ; oldun = status -> uidnext ; if ( * s ++ != '(' ) { mutt_debug ( 1 , \"Error<S2SV_blank>parsing<S2SV_blank>STATUS\\\\n\" ) ; return ; } while ( * s && * s != ')' ) { value = imap_next_word ( s ) ; errno = 0 ; const unsigned long ulcount = strtoul ( value , & value , 10 ) ; if ( ( ( errno == ERANGE ) && ( ulcount == ULONG_MAX ) ) || ( ( unsigned int ) ulcount != ulcount ) ) { mutt_debug ( 1 , \"Error<S2SV_blank>parsing<S2SV_blank>STATUS<S2SV_blank>number\\\\n\" ) ; return ; } const unsigned int count = ( unsigned int ) ulcount ; if ( mutt_str_strncmp ( \"MESSAGES\" , s , 8 ) == 0 ) { status -> messages = count ; new_msg_count = 1 ; } else if ( mutt_str_strncmp ( \"RECENT\" , s , 6 ) == 0 ) status -> recent = count ; else if ( mutt_str_strncmp ( \"UIDNEXT\" , s , 7 ) == 0 ) status -> uidnext = count ; else if ( mutt_str_strncmp ( \"UIDVALIDITY\" , s , 11 ) == 0 ) status -> uidvalidity = count ; else if ( mutt_str_strncmp ( \"UNSEEN\" , s , 6 ) == 0 ) status -> unseen = count ; s = value ; if ( * s && * s != ')' ) s = imap_next_word ( s ) ; } mutt_debug ( 3 , \"%s<S2SV_blank>(UIDVALIDITY:<S2SV_blank>%u,<S2SV_blank>UIDNEXT:<S2SV_blank>%u)<S2SV_blank>%d<S2SV_blank>messages,<S2SV_blank>%d<S2SV_blank>recent,<S2SV_blank>%d<S2SV_blank>unseen\\\\n\" , status -> name , status -> uidvalidity , status -> uidnext , status -> messages , status -> recent , status -> unseen ) ; if ( idata -> cmddata && idata -> cmdtype == IMAP_CT_STATUS ) { memcpy ( idata -> cmddata , status , sizeof ( struct ImapStatus ) ) ; return ; } mutt_debug ( 3 , \"Running<S2SV_blank>default<S2SV_blank>STATUS<S2SV_blank>handler\\\\n\" ) ; for ( inc = Incoming ; inc ; inc = inc -> next ) { if ( inc -> magic != MUTT_IMAP ) continue ; if ( imap_parse_path ( inc -> path , & mx ) < 0 ) { mutt_debug ( 1 , \"Error<S2SV_blank>parsing<S2SV_blank>mailbox<S2SV_blank>%s,<S2SV_blank>skipping\\\\n\" , inc -> path ) ; continue ; } if ( imap_account_match ( & idata -> conn -> account , & mx . account ) ) { if ( mx . mbox ) { value = mutt_str_strdup ( mx . mbox ) ; imap_fix_path ( idata , mx . mbox , value , mutt_str_strlen ( value ) + 1 ) ; FREE ( & mx . mbox ) ; } else value = mutt_str_strdup ( \"INBOX\" ) ; if ( value && ( imap_mxcmp ( mailbox , value ) == 0 ) ) { mutt_debug ( 3 , \"Found<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>buffy<S2SV_blank>list<S2SV_blank>(OV:<S2SV_blank>%u<S2SV_blank>ON:<S2SV_blank>%u<S2SV_blank>U:<S2SV_blank>%d)\\\\n\" , mailbox , olduv , oldun , status -> unseen ) ; if ( MailCheckRecent ) { if ( olduv && olduv == status -> uidvalidity ) { if ( oldun < status -> uidnext ) new = ( status -> unseen > 0 ) ; } else if ( ! olduv && ! oldun ) { new = ( status -> recent > 0 ) ; } else new = ( status -> unseen > 0 ) ; } else new = ( status -> unseen > 0 ) ; # ifdef USE_SIDEBAR if ( ( inc -> new != new ) || ( inc -> msg_count != status -> messages ) || ( inc -> msg_unread != status -> unseen ) ) { mutt_menu_set_current_redraw ( REDRAW_SIDEBAR ) ; } # endif inc -> new = new ; if ( new_msg_count ) inc -> msg_count = status -> messages ; inc -> msg_unread = status -> unseen ; if ( inc -> new ) { status -> uidnext = oldun ; } FREE ( & value ) ; return ; } FREE ( & value ) ; } FREE ( & mx . mbox ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> status = IMAP_FATAL ; return ; } if ( strlen ( idata -> buf ) < litlen ) { mutt_debug ( 1 , \"Error<S2SV_blank>parsing<S2SV_blank>STATUS<S2SV_blank>mailbox\\\\n\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8871\n\n```\nCWE-416 static OPJ_BOOL opj_j2k_write_mco ( opj_j2k_t * p_j2k , struct opj_stream_private * p_stream , struct opj_event_mgr * p_manager ) { OPJ_BYTE * l_current_data = 00 ; OPJ_UINT32 l_mco_size ; opj_tcp_t * l_tcp = 00 ; opj_simple_mcc_decorrelation_data_t * l_mcc_record ; OPJ_UINT32 i ; assert ( p_j2k != 00 ) ; assert ( p_manager != 00 ) ; assert ( p_stream != 00 ) ; l_tcp = & ( p_j2k -> m_cp . tcps [ p_j2k -> m_current_tile_number ] ) ; <S2SV_StartBug> l_current_data = p_j2k -> m_specific_param . m_encoder . m_header_tile_data ; <S2SV_EndBug> l_mco_size = 5 + l_tcp -> m_nb_mcc_records ; if ( l_mco_size > p_j2k -> m_specific_param . m_encoder . m_header_tile_data_size ) { OPJ_BYTE * new_header_tile_data = ( OPJ_BYTE * ) opj_realloc ( p_j2k -> m_specific_param . m_encoder . m_header_tile_data , l_mco_size ) ; if ( ! new_header_tile_data ) { opj_free ( p_j2k -> m_specific_param . m_encoder . m_header_tile_data ) ; p_j2k -> m_specific_param . m_encoder . m_header_tile_data = NULL ; p_j2k -> m_specific_param . m_encoder . m_header_tile_data_size = 0 ; opj_event_msg ( p_manager , EVT_ERROR , \"Not<S2SV_blank>enough<S2SV_blank>memory<S2SV_blank>to<S2SV_blank>write<S2SV_blank>MCO<S2SV_blank>marker\\\\n\" ) ; return OPJ_FALSE ; } p_j2k -> m_specific_param . m_encoder . m_header_tile_data = new_header_tile_data ; p_j2k -> m_specific_param . m_encoder . m_header_tile_data_size = l_mco_size ; } <S2SV_StartBug> opj_write_bytes ( l_current_data , J2K_MS_MCO , 2 ) ; <S2SV_EndBug> l_current_data += 2 ; opj_write_bytes ( l_current_data , l_mco_size - 2 , 2 ) ; l_current_data += 2 ; opj_write_bytes ( l_current_data , l_tcp -> m_nb_mcc_records , 1 ) ; ++ l_current_data ; l_mcc_record = l_tcp -> m_mcc_records ; for ( i = 0 ; i < l_tcp -> m_nb_mcc_records ; ++ i ) { opj_write_bytes ( l_current_data , l_mcc_record -> m_index , 1 ) ; ++ l_current_data ; ++ l_mcc_record ; } if ( opj_stream_write_data ( p_stream , p_j2k -> m_specific_param . m_encoder . m_header_tile_data , l_mco_size , p_manager ) != l_mco_size ) { return OPJ_FALSE ; } return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; <S2SV_ModEnd> l_mco_size = 5 <S2SV_ModStart> l_mco_size ; } l_current_data = p_j2k -> m_specific_param . m_encoder . m_header_tile_data ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 static boolean_t is_authenticated ( HttpRequest req , HttpResponse res ) { if ( Run . httpd . credentials ) { if ( ! basic_authenticate ( req ) ) { send_error ( req , res , SC_UNAUTHORIZED , \"You<S2SV_blank>are<S2SV_blank>not<S2SV_blank>authorized<S2SV_blank>to<S2SV_blank>access<S2SV_blank>monit.<S2SV_blank>Either<S2SV_blank>you<S2SV_blank>supplied<S2SV_blank>the<S2SV_blank>wrong<S2SV_blank>credentials<S2SV_blank>(e.g.<S2SV_blank>bad<S2SV_blank>password),<S2SV_blank>or<S2SV_blank>your<S2SV_blank>browser<S2SV_blank>doesn\\'t<S2SV_blank>understand<S2SV_blank>how<S2SV_blank>to<S2SV_blank>supply<S2SV_blank>the<S2SV_blank>credentials<S2SV_blank>required\" ) ; set_header ( res , \"WWW-Authenticate\" , \"Basic<S2SV_blank>realm=\\\\\"monit\\\\\"\" ) ; return false ; } } <S2SV_StartBug> return true ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( IS ( req -> method , METHOD_POST ) ) { const char * cookie = get_header ( req , \"Cookie\" ) ; const char * token = get_parameter ( req , \"securitytoken\" ) ; if ( ! cookie ) { LogError ( \"HttpRequest:<S2SV_blank>access<S2SV_blank>denied<S2SV_blank>--<S2SV_blank>client<S2SV_blank>[%s]:<S2SV_blank>missing<S2SV_blank>CSRF<S2SV_blank>token<S2SV_blank>cookie\\\\n\" , NVLSTR ( Socket_getRemoteHost ( req -> S ) ) ) ; send_error ( req , res , SC_FORBIDDEN , \"Invalid<S2SV_blank>CSRF<S2SV_blank>Token\" ) ; return false ; } if ( ! token ) { LogError ( \"HttpRequest:<S2SV_blank>access<S2SV_blank>denied<S2SV_blank>--<S2SV_blank>client<S2SV_blank>[%s]:<S2SV_blank>missing<S2SV_blank>CSRF<S2SV_blank>token<S2SV_blank>in<S2SV_blank>HTTP<S2SV_blank>parameter\\\\n\" , NVLSTR ( Socket_getRemoteHost ( req -> S ) ) ) ; send_error ( req , res , SC_FORBIDDEN , \"Invalid<S2SV_blank>CSRF<S2SV_blank>Token\" ) ; return false ; } if ( ! Str_startsWith ( cookie , \"securitytoken=\" ) ) { LogError ( \"HttpRequest:<S2SV_blank>access<S2SV_blank>denied<S2SV_blank>--<S2SV_blank>client<S2SV_blank>[%s]:<S2SV_blank>no<S2SV_blank>CSRF<S2SV_blank>token<S2SV_blank>in<S2SV_blank>cookie\\\\n\" , NVLSTR ( Socket_getRemoteHost ( req -> S ) ) ) ; send_error ( req , res , SC_FORBIDDEN , \"Invalid<S2SV_blank>CSRF<S2SV_blank>Token\" ) ; return false ; } if ( Str_compareConstantTime ( cookie + 14 , token ) ) { LogError ( \"HttpRequest:<S2SV_blank>access<S2SV_blank>denied<S2SV_blank>--<S2SV_blank>client<S2SV_blank>[%s]:<S2SV_blank>CSRF<S2SV_blank>token<S2SV_blank>mismatch\\\\n\" , NVLSTR ( Socket_getRemoteHost ( req -> S ) ) ) ; send_error ( req , res , SC_FORBIDDEN , \"Invalid<S2SV_blank>CSRF<S2SV_blank>Token\" ) ; return false ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 static int perf_event_read_group ( struct perf_event * event , u64 read_format , char __user * buf ) { struct perf_event * leader = event -> group_leader , * sub ; <S2SV_StartBug> int n = 0 , size = 0 , ret = - EFAULT ; <S2SV_EndBug> <S2SV_StartBug> struct perf_event_context * ctx = leader -> ctx ; <S2SV_EndBug> u64 values [ 5 ] ; u64 count , enabled , running ; mutex_lock ( & ctx -> mutex ) ; count = perf_event_read_value ( leader , & enabled , & running ) ; values [ n ++ ] = 1 + leader -> nr_siblings ; if ( read_format & PERF_FORMAT_TOTAL_TIME_ENABLED ) values [ n ++ ] = enabled ; if ( read_format & PERF_FORMAT_TOTAL_TIME_RUNNING ) values [ n ++ ] = running ; values [ n ++ ] = count ; if ( read_format & PERF_FORMAT_ID ) values [ n ++ ] = primary_event_id ( leader ) ; size = n * sizeof ( u64 ) ; if ( copy_to_user ( buf , values , size ) ) goto unlock ; ret = size ; list_for_each_entry ( sub , & leader -> sibling_list , group_entry ) { n = 0 ; values [ n ++ ] = perf_event_read_value ( sub , & enabled , & running ) ; if ( read_format & PERF_FORMAT_ID ) values [ n ++ ] = primary_event_id ( sub ) ; size = n * sizeof ( u64 ) ; if ( copy_to_user ( buf + ret , values , size ) ) { <S2SV_StartBug> ret = - EFAULT ; <S2SV_EndBug> <S2SV_StartBug> goto unlock ; <S2SV_EndBug> } ret += size ; } <S2SV_StartBug> unlock : <S2SV_EndBug> mutex_unlock ( & ctx -> mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * sub ; struct perf_event_context * ctx = leader -> ctx ; <S2SV_ModStart> 0 , ret ; u64 count , enabled , running ; u64 values [ 5 ] ; lockdep_assert_held ( & ctx -> mutex ) ; count = perf_event_read_value ( leader , & enabled , & running ) ; values [ n ++ ] = 1 + leader -> nr_siblings ; if ( read_format & PERF_FORMAT_TOTAL_TIME_ENABLED ) values [ n ++ ] = enabled ; if ( read_format & PERF_FORMAT_TOTAL_TIME_RUNNING ) values [ n ++ ] = running ; values [ n ++ ] = count ; if ( read_format & PERF_FORMAT_ID ) values [ n ++ ] = primary_event_id ( leader ) ; size = n * sizeof ( u64 ) ; if ( copy_to_user ( buf , values , size ) ) return <S2SV_ModEnd> - EFAULT ; <S2SV_ModStart> - EFAULT ; <S2SV_ModEnd> ret = size <S2SV_ModStart> ) ) { return <S2SV_ModEnd> - EFAULT ; <S2SV_ModStart> - EFAULT ; <S2SV_ModEnd> } ret += <S2SV_ModStart> size ; } <S2SV_ModEnd> return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5224\n\n```\nCWE-000 <S2SV_StartBug> int setpwnam ( struct passwd * pwd ) <S2SV_EndBug> { FILE * fp = NULL , * pwf = NULL ; int save_errno ; int found ; int namelen ; int buflen = 256 ; int contlen , rc ; char * linebuf = NULL ; char * tmpname = NULL ; <S2SV_StartBug> char * atomic_dir = \"/etc\" ; <S2SV_EndBug> pw_init ( ) ; <S2SV_StartBug> if ( ( fp = xfmkstemp ( & tmpname , atomic_dir ) ) == NULL ) <S2SV_EndBug> return - 1 ; if ( fchown ( fileno ( fp ) , ( uid_t ) 0 , ( gid_t ) 0 ) < 0 ) goto fail ; if ( lckpwdf ( ) < 0 ) goto fail ; pwf = fopen ( PASSWD_FILE , \"r\" ) ; if ( ! pwf ) goto fail ; namelen = strlen ( pwd -> pw_name ) ; linebuf = malloc ( buflen ) ; if ( ! linebuf ) goto fail ; found = false ; while ( fgets ( linebuf , buflen , pwf ) != NULL ) { contlen = strlen ( linebuf ) ; while ( linebuf [ contlen - 1 ] != '\\\\n' && ! feof ( pwf ) ) { char * tmp ; buflen *= 2 ; tmp = realloc ( linebuf , buflen ) ; if ( tmp == NULL ) goto fail ; linebuf = tmp ; if ( fgets ( & linebuf [ contlen ] , buflen / 2 , pwf ) == NULL ) break ; contlen = strlen ( linebuf ) ; } if ( ! found && linebuf [ namelen ] == ':' && ! strncmp ( linebuf , pwd -> pw_name , namelen ) ) { if ( putpwent ( pwd , fp ) < 0 ) goto fail ; found = true ; continue ; } fputs ( linebuf , fp ) ; } if ( fchmod ( fileno ( fp ) , 0644 ) < 0 ) goto fail ; rc = close_stream ( fp ) ; fp = NULL ; if ( rc != 0 ) goto fail ; fclose ( pwf ) ; pwf = NULL ; if ( ! found ) { errno = ENOENT ; goto fail ; } unlink ( PASSWD_FILE \".OLD\" ) ; ignore_result ( link ( PASSWD_FILE , PASSWD_FILE \".OLD\" ) ) ; if ( rename ( tmpname , PASSWD_FILE ) < 0 ) goto fail ; ulckpwdf ( ) ; return 0 ; fail : save_errno = errno ; ulckpwdf ( ) ; if ( fp != NULL ) fclose ( fp ) ; if ( tmpname != NULL ) unlink ( tmpname ) ; free ( tmpname ) ; if ( pwf != NULL ) fclose ( pwf ) ; free ( linebuf ) ; errno = save_errno ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> passwd * pwd , const char * prefix <S2SV_ModStart> = NULL ; <S2SV_ModEnd> pw_init ( ) <S2SV_ModStart> & tmpname , \"/etc\" , prefix <S2SV_ModEnd> ) ) ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19057\n\n```\nCWE-401 static int mwifiex_pcie_init_evt_ring ( struct mwifiex_adapter * adapter ) { struct pcie_service_card * card = adapter -> card ; struct mwifiex_evt_buf_desc * desc ; struct sk_buff * skb ; dma_addr_t buf_pa ; int i ; for ( i = 0 ; i < MWIFIEX_MAX_EVT_BD ; i ++ ) { skb = dev_alloc_skb ( MAX_EVENT_SIZE ) ; if ( ! skb ) { mwifiex_dbg ( adapter , ERROR , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>skb<S2SV_blank>for<S2SV_blank>EVENT<S2SV_blank>buf.\\\\n\" ) ; kfree ( card -> evtbd_ring_vbase ) ; return - ENOMEM ; } skb_put ( skb , MAX_EVENT_SIZE ) ; if ( mwifiex_map_pci_memory ( adapter , skb , MAX_EVENT_SIZE , <S2SV_StartBug> PCI_DMA_FROMDEVICE ) ) <S2SV_EndBug> return - 1 ; <S2SV_StartBug> buf_pa = MWIFIEX_SKB_DMA_ADDR ( skb ) ; <S2SV_EndBug> mwifiex_dbg ( adapter , EVENT , \"info:<S2SV_blank>EVT<S2SV_blank>ring:<S2SV_blank>skb=%p<S2SV_blank>len=%d<S2SV_blank>data=%p<S2SV_blank>buf_pa=%#x:%x\\\\n\" , skb , skb -> len , skb -> data , ( u32 ) buf_pa , ( u32 ) ( ( u64 ) buf_pa >> 32 ) ) ; card -> evt_buf_list [ i ] = skb ; card -> evtbd_ring [ i ] = ( void * ) ( card -> evtbd_ring_vbase + ( sizeof ( * desc ) * i ) ) ; desc = card -> evtbd_ring [ i ] ; desc -> paddr = buf_pa ; desc -> len = ( u16 ) skb -> len ; desc -> flags = 0 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PCI_DMA_FROMDEVICE ) ) { kfree_skb ( skb ) ; kfree ( card -> evtbd_ring_vbase ) ; <S2SV_ModStart> - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4565\n\n```\nCWE-264 static ssize_t qib_write ( struct file * fp , const char __user * data , size_t count , loff_t * off ) { const struct qib_cmd __user * ucmd ; struct qib_ctxtdata * rcd ; const void __user * src ; size_t consumed , copy = 0 ; struct qib_cmd cmd ; ssize_t ret = 0 ; void * dest ; <S2SV_StartBug> if ( count < sizeof ( cmd . type ) ) { <S2SV_EndBug> ret = - EINVAL ; goto bail ; } ucmd = ( const struct qib_cmd __user * ) data ; if ( copy_from_user ( & cmd . type , & ucmd -> type , sizeof ( cmd . type ) ) ) { ret = - EFAULT ; goto bail ; } consumed = sizeof ( cmd . type ) ; switch ( cmd . type ) { case QIB_CMD_ASSIGN_CTXT : case QIB_CMD_USER_INIT : copy = sizeof ( cmd . cmd . user_info ) ; dest = & cmd . cmd . user_info ; src = & ucmd -> cmd . user_info ; break ; case QIB_CMD_RECV_CTRL : copy = sizeof ( cmd . cmd . recv_ctrl ) ; dest = & cmd . cmd . recv_ctrl ; src = & ucmd -> cmd . recv_ctrl ; break ; case QIB_CMD_CTXT_INFO : copy = sizeof ( cmd . cmd . ctxt_info ) ; dest = & cmd . cmd . ctxt_info ; src = & ucmd -> cmd . ctxt_info ; break ; case QIB_CMD_TID_UPDATE : case QIB_CMD_TID_FREE : copy = sizeof ( cmd . cmd . tid_info ) ; dest = & cmd . cmd . tid_info ; src = & ucmd -> cmd . tid_info ; break ; case QIB_CMD_SET_PART_KEY : copy = sizeof ( cmd . cmd . part_key ) ; dest = & cmd . cmd . part_key ; src = & ucmd -> cmd . part_key ; break ; case QIB_CMD_DISARM_BUFS : case QIB_CMD_PIOAVAILUPD : copy = 0 ; src = NULL ; dest = NULL ; break ; case QIB_CMD_POLL_TYPE : copy = sizeof ( cmd . cmd . poll_type ) ; dest = & cmd . cmd . poll_type ; src = & ucmd -> cmd . poll_type ; break ; case QIB_CMD_ARMLAUNCH_CTRL : copy = sizeof ( cmd . cmd . armlaunch_ctrl ) ; dest = & cmd . cmd . armlaunch_ctrl ; src = & ucmd -> cmd . armlaunch_ctrl ; break ; case QIB_CMD_SDMA_INFLIGHT : copy = sizeof ( cmd . cmd . sdma_inflight ) ; dest = & cmd . cmd . sdma_inflight ; src = & ucmd -> cmd . sdma_inflight ; break ; case QIB_CMD_SDMA_COMPLETE : copy = sizeof ( cmd . cmd . sdma_complete ) ; dest = & cmd . cmd . sdma_complete ; src = & ucmd -> cmd . sdma_complete ; break ; case QIB_CMD_ACK_EVENT : copy = sizeof ( cmd . cmd . event_mask ) ; dest = & cmd . cmd . event_mask ; src = & ucmd -> cmd . event_mask ; break ; default : ret = - EINVAL ; goto bail ; } if ( copy ) { if ( ( count - consumed ) < copy ) { ret = - EINVAL ; goto bail ; } if ( copy_from_user ( dest , src , copy ) ) { ret = - EFAULT ; goto bail ; } consumed += copy ; } rcd = ctxt_fp ( fp ) ; if ( ! rcd && cmd . type != QIB_CMD_ASSIGN_CTXT ) { ret = - EINVAL ; goto bail ; } switch ( cmd . type ) { case QIB_CMD_ASSIGN_CTXT : ret = qib_assign_ctxt ( fp , & cmd . cmd . user_info ) ; if ( ret ) goto bail ; break ; case QIB_CMD_USER_INIT : ret = qib_do_user_init ( fp , & cmd . cmd . user_info ) ; if ( ret ) goto bail ; ret = qib_get_base_info ( fp , ( void __user * ) ( unsigned long ) cmd . cmd . user_info . spu_base_info , cmd . cmd . user_info . spu_base_info_size ) ; break ; case QIB_CMD_RECV_CTRL : ret = qib_manage_rcvq ( rcd , subctxt_fp ( fp ) , cmd . cmd . recv_ctrl ) ; break ; case QIB_CMD_CTXT_INFO : ret = qib_ctxt_info ( fp , ( struct qib_ctxt_info __user * ) ( unsigned long ) cmd . cmd . ctxt_info ) ; break ; case QIB_CMD_TID_UPDATE : ret = qib_tid_update ( rcd , fp , & cmd . cmd . tid_info ) ; break ; case QIB_CMD_TID_FREE : ret = qib_tid_free ( rcd , subctxt_fp ( fp ) , & cmd . cmd . tid_info ) ; break ; case QIB_CMD_SET_PART_KEY : ret = qib_set_part_key ( rcd , cmd . cmd . part_key ) ; break ; case QIB_CMD_DISARM_BUFS : ( void ) qib_disarm_piobufs_ifneeded ( rcd ) ; ret = disarm_req_delay ( rcd ) ; break ; case QIB_CMD_PIOAVAILUPD : qib_force_pio_avail_update ( rcd -> dd ) ; break ; case QIB_CMD_POLL_TYPE : rcd -> poll_type = cmd . cmd . poll_type ; break ; case QIB_CMD_ARMLAUNCH_CTRL : rcd -> dd -> f_set_armlaunch ( rcd -> dd , cmd . cmd . armlaunch_ctrl ) ; break ; case QIB_CMD_SDMA_INFLIGHT : ret = qib_sdma_get_inflight ( user_sdma_queue_fp ( fp ) , ( u32 __user * ) ( unsigned long ) cmd . cmd . sdma_inflight ) ; break ; case QIB_CMD_SDMA_COMPLETE : ret = qib_sdma_get_complete ( rcd -> ppd , user_sdma_queue_fp ( fp ) , ( u32 __user * ) ( unsigned long ) cmd . cmd . sdma_complete ) ; break ; case QIB_CMD_ACK_EVENT : ret = qib_user_event_ack ( rcd , subctxt_fp ( fp ) , cmd . cmd . event_mask ) ; break ; } if ( ret >= 0 ) ret = consumed ; bail : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( WARN_ON_ONCE ( ! ib_safe_file_access ( fp ) ) ) return - EACCES ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 EAS_BOOL WT_CheckSampleEnd ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame , EAS_BOOL update ) { EAS_U32 endPhaseAccum ; EAS_U32 endPhaseFrac ; EAS_I32 numSamples ; EAS_BOOL done = EAS_FALSE ; endPhaseFrac = pWTVoice -> phaseFrac + ( pWTIntFrame -> frame . phaseIncrement << SYNTH_UPDATE_PERIOD_IN_BITS ) ; endPhaseAccum = pWTVoice -> phaseAccum + GET_PHASE_INT_PART ( endPhaseFrac ) ; if ( endPhaseAccum >= pWTVoice -> loopEnd ) { numSamples = ( EAS_I32 ) ( pWTVoice -> loopEnd - pWTVoice -> phaseAccum ) ; numSamples = ( EAS_I32 ) ( ( numSamples << NUM_PHASE_FRAC_BITS ) - pWTVoice -> phaseFrac ) ; if ( pWTIntFrame -> frame . phaseIncrement ) { pWTIntFrame -> numSamples = 1 + ( numSamples / pWTIntFrame -> frame . phaseIncrement ) ; } else { pWTIntFrame -> numSamples = numSamples ; } <S2SV_StartBug> done = EAS_TRUE ; <S2SV_EndBug> } if ( update ) { pWTVoice -> phaseFrac = endPhaseFrac ; pWTVoice -> phaseAccum = endPhaseAccum ; } return done ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> numSamples ; } if ( pWTIntFrame -> numSamples < 0 ) { ALOGE ( \"b/26366256\" ) ; pWTIntFrame -> numSamples = 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10065\n\n```\nCWE-284 static Image * ReadVIFFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define VFF_CM_genericRGB 15 # define VFF_CM_ntscRGB 1 # define VFF_CM_NONE 0 # define VFF_DEP_DECORDER 0x4 # define VFF_DEP_NSORDER 0x8 # define VFF_DES_RAW 0 # define VFF_LOC_IMPLICIT 1 # define VFF_MAPTYP_NONE 0 # define VFF_MAPTYP_1_BYTE 1 # define VFF_MAPTYP_2_BYTE 2 # define VFF_MAPTYP_4_BYTE 4 # define VFF_MAPTYP_FLOAT 5 # define VFF_MAPTYP_DOUBLE 7 # define VFF_MS_NONE 0 # define VFF_MS_ONEPERBAND 1 # define VFF_MS_SHARED 3 # define VFF_TYP_BIT 0 # define VFF_TYP_1_BYTE 1 # define VFF_TYP_2_BYTE 2 # define VFF_TYP_4_BYTE 4 # define VFF_TYP_FLOAT 5 # define VFF_TYP_DOUBLE 9 typedef struct _ViffInfo { unsigned char identifier , file_type , release , version , machine_dependency , reserve [ 3 ] ; char comment [ 512 ] ; unsigned int rows , columns , subrows ; int x_offset , y_offset ; float x_bits_per_pixel , y_bits_per_pixel ; unsigned int location_type , location_dimension , number_of_images , number_data_bands , data_storage_type , data_encode_scheme , map_scheme , map_storage_type , map_rows , map_columns , map_subrows , map_enable , maps_per_cycle , color_space_model ; } ViffInfo ; double min_value , scale_factor , value ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bytes_per_pixel , max_packets , quantum ; ssize_t count , y ; unsigned char * pixels ; unsigned long lsb_first ; ViffInfo viff_info ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 1 , & viff_info . identifier ) ; do { if ( ( count != 1 ) || ( ( unsigned char ) viff_info . identifier != 0xab ) ) ThrowReaderException ( CorruptImageError , \"NotAVIFFImage\" ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . file_type ) , & viff_info . file_type ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . release ) , & viff_info . release ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . version ) , & viff_info . version ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . machine_dependency ) , & viff_info . machine_dependency ) ; ( void ) ReadBlob ( image , sizeof ( viff_info . reserve ) , viff_info . reserve ) ; count = ReadBlob ( image , 512 , ( unsigned char * ) viff_info . comment ) ; viff_info . comment [ 511 ] = '\\\\0' ; if ( strlen ( viff_info . comment ) > 4 ) ( void ) SetImageProperty ( image , \"comment\" , viff_info . comment , exception ) ; if ( ( viff_info . machine_dependency == VFF_DEP_DECORDER ) || ( viff_info . machine_dependency == VFF_DEP_NSORDER ) ) image -> endian = LSBEndian ; else image -> endian = MSBEndian ; viff_info . rows = ReadBlobLong ( image ) ; viff_info . columns = ReadBlobLong ( image ) ; viff_info . subrows = ReadBlobLong ( image ) ; viff_info . x_offset = ( int ) ReadBlobLong ( image ) ; viff_info . y_offset = ( int ) ReadBlobLong ( image ) ; viff_info . x_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . y_bits_per_pixel = ( float ) ReadBlobLong ( image ) ; viff_info . location_type = ReadBlobLong ( image ) ; viff_info . location_dimension = ReadBlobLong ( image ) ; viff_info . number_of_images = ReadBlobLong ( image ) ; viff_info . number_data_bands = ReadBlobLong ( image ) ; viff_info . data_storage_type = ReadBlobLong ( image ) ; viff_info . data_encode_scheme = ReadBlobLong ( image ) ; viff_info . map_scheme = ReadBlobLong ( image ) ; viff_info . map_storage_type = ReadBlobLong ( image ) ; viff_info . map_rows = ReadBlobLong ( image ) ; viff_info . map_columns = ReadBlobLong ( image ) ; viff_info . map_subrows = ReadBlobLong ( image ) ; viff_info . map_enable = ReadBlobLong ( image ) ; viff_info . maps_per_cycle = ReadBlobLong ( image ) ; viff_info . color_space_model = ReadBlobLong ( image ) ; for ( i = 0 ; i < 420 ; i ++ ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; image -> depth = viff_info . x_bits_per_pixel <= 8 ? 8UL : MAGICKCORE_QUANTUM_DEPTH ; number_pixels = ( MagickSizeType ) viff_info . columns * viff_info . rows ; if ( number_pixels != ( size_t ) number_pixels ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( number_pixels == 0 ) ThrowReaderException ( CoderError , \"ImageColumnOrRowSizeIsNotSupported\" ) ; if ( ( viff_info . number_data_bands < 1 ) || ( viff_info . number_data_bands > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( viff_info . data_storage_type != VFF_TYP_BIT ) && ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_2_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_4_BYTE ) && ( viff_info . data_storage_type != VFF_TYP_FLOAT ) && ( viff_info . data_storage_type != VFF_TYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"DataStorageTypeIsNotSupported\" ) ; if ( viff_info . data_encode_scheme != VFF_DES_RAW ) ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; if ( ( viff_info . map_storage_type != VFF_MAPTYP_NONE ) && ( viff_info . map_storage_type != VFF_MAPTYP_1_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_2_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_4_BYTE ) && ( viff_info . map_storage_type != VFF_MAPTYP_FLOAT ) && ( viff_info . map_storage_type != VFF_MAPTYP_DOUBLE ) ) ThrowReaderException ( CoderError , \"MapStorageTypeIsNotSupported\" ) ; if ( ( viff_info . color_space_model != VFF_CM_NONE ) && ( viff_info . color_space_model != VFF_CM_ntscRGB ) && ( viff_info . color_space_model != VFF_CM_genericRGB ) ) ThrowReaderException ( CoderError , \"ColorspaceModelIsNotSupported\" ) ; if ( viff_info . location_type != VFF_LOC_IMPLICIT ) ThrowReaderException ( CoderError , \"LocationTypeIsNotSupported\" ) ; if ( viff_info . number_of_images != 1 ) ThrowReaderException ( CoderError , \"NumberOfImagesIsNotSupported\" ) ; if ( viff_info . map_rows == 0 ) viff_info . map_scheme = VFF_MS_NONE ; switch ( ( int ) viff_info . map_scheme ) { case VFF_MS_NONE : { if ( viff_info . number_data_bands < 3 ) { if ( viff_info . data_storage_type == VFF_TYP_BIT ) image -> colors = 2 ; else if ( viff_info . data_storage_type == VFF_MAPTYP_1_BYTE ) image -> colors = 256UL ; else image -> colors = image -> depth <= 8 ? 256UL : 65536UL ; status = AcquireImageColormap ( image , image -> colors , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case VFF_MS_ONEPERBAND : case VFF_MS_SHARED : { unsigned char * viff_colormap ; switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_1_BYTE : bytes_per_pixel = 1 ; break ; case VFF_MAPTYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_MAPTYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_MAPTYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } image -> colors = viff_info . map_columns ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( viff_info . map_rows > ( viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; viff_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , viff_info . map_rows * bytes_per_pixel * sizeof ( * viff_colormap ) ) ; if ( viff_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , bytes_per_pixel * image -> colors * viff_info . map_rows , viff_colormap ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : { MSBOrderShort ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } case VFF_MAPTYP_4_BYTE : case VFF_MAPTYP_FLOAT : { MSBOrderLong ( viff_colormap , ( bytes_per_pixel * image -> colors * viff_info . map_rows ) ) ; break ; } default : break ; } for ( i = 0 ; i < ( ssize_t ) ( viff_info . map_rows * image -> colors ) ; i ++ ) { switch ( ( int ) viff_info . map_storage_type ) { case VFF_MAPTYP_2_BYTE : value = 1.0 * ( ( short * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_4_BYTE : value = 1.0 * ( ( int * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_FLOAT : value = ( ( float * ) viff_colormap ) [ i ] ; break ; case VFF_MAPTYP_DOUBLE : value = ( ( double * ) viff_colormap ) [ i ] ; break ; default : value = 1.0 * viff_colormap [ i ] ; break ; } if ( i < ( ssize_t ) image -> colors ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } else if ( i < ( ssize_t ) ( 2 * image -> colors ) ) image -> colormap [ i % image -> colors ] . green = ScaleCharToQuantum ( ( unsigned char ) value ) ; else if ( i < ( ssize_t ) ( 3 * image -> colors ) ) image -> colormap [ i % image -> colors ] . blue = ScaleCharToQuantum ( ( unsigned char ) value ) ; } viff_colormap = ( unsigned char * ) RelinquishMagickMemory ( viff_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = viff_info . number_data_bands == 4 ? BlendPixelTrait : UndefinedPixelTrait ; image -> storage_class = ( viff_info . number_data_bands < 3 ? PseudoClass : DirectClass ) ; image -> columns = viff_info . rows ; image -> rows = viff_info . columns ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : bytes_per_pixel = 2 ; break ; case VFF_TYP_4_BYTE : bytes_per_pixel = 4 ; break ; case VFF_TYP_FLOAT : bytes_per_pixel = 4 ; break ; case VFF_TYP_DOUBLE : bytes_per_pixel = 8 ; break ; default : bytes_per_pixel = 1 ; break ; } if ( viff_info . data_storage_type == VFF_TYP_BIT ) <S2SV_StartBug> max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; <S2SV_EndBug> else <S2SV_StartBug> max_packets = ( size_t ) ( number_pixels * viff_info . number_data_bands ) ; <S2SV_EndBug> pixels = ( unsigned char * ) AcquireQuantumMemory ( MagickMax ( number_pixels , max_packets ) , bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , bytes_per_pixel * max_packets , pixels ) ; lsb_first = 1 ; if ( * ( char * ) & lsb_first && ( ( viff_info . machine_dependency != VFF_DEP_DECORDER ) && ( viff_info . machine_dependency != VFF_DEP_NSORDER ) ) ) switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : { MSBOrderShort ( pixels , bytes_per_pixel * max_packets ) ; break ; } case VFF_TYP_4_BYTE : case VFF_TYP_FLOAT : { MSBOrderLong ( pixels , bytes_per_pixel * max_packets ) ; break ; } default : break ; } min_value = 0.0 ; scale_factor = 1.0 ; if ( ( viff_info . data_storage_type != VFF_TYP_1_BYTE ) && ( viff_info . map_scheme == VFF_MS_NONE ) ) { double max_value ; switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ 0 ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ 0 ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ 0 ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ 0 ] ; break ; default : value = 1.0 * pixels [ 0 ] ; break ; } max_value = value ; min_value = value ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( value > max_value ) max_value = value ; else if ( value < min_value ) min_value = value ; } if ( ( min_value == 0 ) && ( max_value == 0 ) ) scale_factor = 0 ; else if ( min_value == max_value ) { scale_factor = ( double ) QuantumRange / min_value ; min_value = 0 ; } else scale_factor = ( double ) QuantumRange / ( max_value - min_value ) ; } p = ( unsigned char * ) pixels ; for ( i = 0 ; i < ( ssize_t ) max_packets ; i ++ ) { switch ( ( int ) viff_info . data_storage_type ) { case VFF_TYP_2_BYTE : value = 1.0 * ( ( short * ) pixels ) [ i ] ; break ; case VFF_TYP_4_BYTE : value = 1.0 * ( ( int * ) pixels ) [ i ] ; break ; case VFF_TYP_FLOAT : value = ( ( float * ) pixels ) [ i ] ; break ; case VFF_TYP_DOUBLE : value = ( ( double * ) pixels ) [ i ] ; break ; default : value = 1.0 * pixels [ i ] ; break ; } if ( viff_info . map_scheme == VFF_MS_NONE ) { value = ( value - min_value ) * scale_factor ; if ( value > QuantumRange ) value = QuantumRange ; else if ( value < 0 ) value = 0 ; } * p = ( unsigned char ) ( ( Quantum ) value ) ; p ++ ; } p = ( unsigned char * ) pixels ; if ( viff_info . data_storage_type == VFF_TYP_BIT ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) ( image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( int ) ( image -> columns % 8 ) ; bit ++ ) { quantum = ( size_t ) ( ( * p ) & ( 0x01 << bit ) ? 0 : 1 ) ; SetPixelRed ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelGreen ( image , quantum == 0 ? 0 : QuantumRange , q ) ; SetPixelBlue ( image , quantum == 0 ? 0 : QuantumRange , q ) ; if ( image -> storage_class == PseudoClass ) SetPixelIndex ( image , ( Quantum ) quantum , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else if ( image -> storage_class == PseudoClass ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else { number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + number_pixels ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 * number_pixels ) ) , q ) ; if ( image -> colors != 0 ) { ssize_t index ; index = ( ssize_t ) GetPixelRed ( image , q ) ; SetPixelRed ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . red , q ) ; index = ( ssize_t ) GetPixelGreen ( image , q ) ; SetPixelGreen ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . green , q ) ; index = ( ssize_t ) GetPixelBlue ( image , q ) ; SetPixelBlue ( image , image -> colormap [ ConstrainColormapIndex ( image , index , exception ) ] . blue , q ) ; } SetPixelAlpha ( image , image -> alpha_trait != UndefinedPixelTrait ? ScaleCharToQuantum ( * ( p + number_pixels * 3 ) ) : OpaqueAlpha , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; count = ReadBlob ( image , 1 , & viff_info . identifier ) ; if ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( viff_info . identifier == 0xab ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == VFF_TYP_BIT ) { if ( CheckMemoryOverflow <S2SV_ModEnd> ( ( image <S2SV_ModStart> ) >> 3UL , <S2SV_ModEnd> image -> rows <S2SV_ModStart> image -> rows ) != MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; max_packets = ( ( image -> columns + 7UL ) >> 3UL ) * image -> rows ; } else { if ( CheckMemoryOverflow ( number_pixels , viff_info . number_data_bands ) != MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_ModEnd> max_packets = ( <S2SV_ModStart> number_data_bands ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 static void show_object ( struct object * obj , <S2SV_StartBug> struct strbuf * path , const char * last , <S2SV_EndBug> void * data ) { <S2SV_StartBug> char * name = path_name ( path , last ) ; <S2SV_EndBug> add_preferred_base_object ( name ) ; add_object_entry ( obj -> oid . hash , obj -> type , name , 0 ) ; obj -> flags |= OBJECT_ADDED ; <S2SV_StartBug> free ( ( char * ) name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void * <S2SV_ModStart> data ) { <S2SV_ModEnd> add_preferred_base_object ( name <S2SV_ModStart> |= OBJECT_ADDED ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3480\n\n```\nCWE-20 size_t cdf_count_chain ( const cdf_sat_t * sat , cdf_secid_t sid , size_t size ) { size_t i , j ; <S2SV_StartBug> cdf_secid_t maxsector = ( cdf_secid_t ) ( sat -> sat_len * size ) ; <S2SV_EndBug> DPRINTF ( ( \"Chain:\" ) ) ; for ( j = i = 0 ; sid >= 0 ; i ++ , j ++ ) { DPRINTF ( ( \"<S2SV_blank>%d\" , sid ) ) ; if ( j >= CDF_LOOP_LIMIT ) { DPRINTF ( ( \"Counting<S2SV_blank>chain<S2SV_blank>loop<S2SV_blank>limit\" ) ) ; errno = EFTYPE ; return ( size_t ) - 1 ; } <S2SV_StartBug> if ( sid > maxsector ) { <S2SV_EndBug> DPRINTF ( ( \"Sector<S2SV_blank>%d<S2SV_blank>><S2SV_blank>%d\\\\n\" , sid , maxsector ) ) ; errno = EFTYPE ; return ( size_t ) - 1 ; } sid = CDF_TOLE4 ( ( uint32_t ) sat -> sat_tab [ sid ] ) ; } if ( i == 0 ) { DPRINTF ( ( \"<S2SV_blank>none,<S2SV_blank>sid:<S2SV_blank>%d\\\\n\" , sid ) ) ; return ( size_t ) - 1 ; } DPRINTF ( ( \"\\\\n\" ) ) ; return i ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( cdf_secid_t ) ( <S2SV_ModStart> * size ) / sizeof ( maxsector ) ) <S2SV_ModStart> if ( sid >= maxsector ) { DPRINTF ( ( \"Sector<S2SV_blank>%d<S2SV_blank>>=<S2SV_blank>%d\\\\n\" <S2SV_ModEnd> , sid ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-24371\n\n```\nCWE-763 void luaC_barrier_ ( lua_State * L , GCObject * o , GCObject * v ) { global_State * g = G ( L ) ; lua_assert ( isblack ( o ) && iswhite ( v ) && ! isdead ( g , v ) && ! isdead ( g , o ) ) ; if ( keepinvariant ( g ) ) { reallymarkobject ( g , v ) ; if ( isold ( o ) ) { lua_assert ( ! isold ( v ) ) ; setage ( v , G_OLD0 ) ; } } else { lua_assert ( issweepphase ( g ) ) ; <S2SV_StartBug> makewhite ( g , o ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( g -> gckind == KGC_INC )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9707\n\n```\nCWE-17 static void parseFirstLine ( Webs * wp ) { char * op , * protoVer , * url , * host , * query , * path , * port , * ext , * buf ; int listenPort ; assert ( wp ) ; assert ( websValid ( wp ) ) ; op = getToken ( wp , 0 ) ; if ( op == NULL || * op == '\\\\0' ) { websError ( wp , HTTP_CODE_NOT_FOUND | WEBS_CLOSE , \"Bad<S2SV_blank>HTTP<S2SV_blank>request\" ) ; return ; } wp -> method = supper ( sclone ( op ) ) ; url = getToken ( wp , 0 ) ; if ( url == NULL || * url == '\\\\0' ) { websError ( wp , HTTP_CODE_BAD_REQUEST | WEBS_CLOSE , \"Bad<S2SV_blank>HTTP<S2SV_blank>request\" ) ; return ; } if ( strlen ( url ) > ME_GOAHEAD_LIMIT_URI ) { websError ( wp , HTTP_CODE_REQUEST_URL_TOO_LARGE | WEBS_CLOSE , \"URI<S2SV_blank>too<S2SV_blank>big\" ) ; return ; } protoVer = getToken ( wp , \"\\\\r\\\\n\" ) ; if ( websGetLogLevel ( ) == 2 ) { trace ( 2 , \"%s<S2SV_blank>%s<S2SV_blank>%s\" , wp -> method , url , protoVer ) ; } host = path = port = query = ext = NULL ; if ( websUrlParse ( url , & buf , NULL , & host , & port , & path , & ext , NULL , & query ) < 0 ) { error ( \"Cannot<S2SV_blank>parse<S2SV_blank>URL:<S2SV_blank>%s\" , url ) ; websError ( wp , HTTP_CODE_BAD_REQUEST | WEBS_CLOSE | WEBS_NOLOG , \"Bad<S2SV_blank>URL\" ) ; return ; } <S2SV_StartBug> if ( ( wp -> path = websNormalizeUriPath ( path ) ) == 0 ) { <S2SV_EndBug> error ( \"Cannot<S2SV_blank>normalize<S2SV_blank>URL:<S2SV_blank>%s\" , url ) ; websError ( wp , HTTP_CODE_BAD_REQUEST | WEBS_CLOSE | WEBS_NOLOG , \"Bad<S2SV_blank>URL\" ) ; wfree ( buf ) ; return ; } wp -> url = sclone ( url ) ; if ( ext ) { wp -> ext = sclone ( slower ( ext ) ) ; } wp -> filename = sfmt ( \"%s%s\" , websGetDocuments ( ) , wp -> path ) ; wp -> query = sclone ( query ) ; wp -> host = sclone ( host ) ; wp -> protocol = wp -> flags & WEBS_SECURE ? \"https\" : \"http\" ; if ( smatch ( protoVer , \"HTTP/1.1\" ) ) { wp -> flags |= WEBS_KEEP_ALIVE | WEBS_HTTP11 ; } else if ( smatch ( protoVer , \"HTTP/1.0\" ) ) { wp -> flags &= ~ ( WEBS_HTTP11 ) ; } else { protoVer = sclone ( \"HTTP/1.1\" ) ; websError ( wp , WEBS_CLOSE | HTTP_CODE_NOT_ACCEPTABLE , \"Unsupported<S2SV_blank>HTTP<S2SV_blank>protocol\" ) ; } wp -> protoVersion = sclone ( protoVer ) ; if ( ( listenPort = socketGetPort ( wp -> listenSid ) ) >= 0 ) { wp -> port = listenPort ; } else { wp -> port = atoi ( port ) ; } wfree ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> path = websValidateUriPath <S2SV_ModEnd> ( path )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 static int gemsafe_get_cert_len ( sc_card_t * card ) { int r ; u8 ibuf [ GEMSAFE_MAX_OBJLEN ] ; u8 * iptr ; struct sc_path path ; struct sc_file * file ; size_t objlen , certlen ; unsigned int ind , i = 0 ; sc_format_path ( GEMSAFE_PATH , & path ) ; r = sc_select_file ( card , & path , & file ) ; if ( r != SC_SUCCESS || ! file ) return SC_ERROR_INTERNAL ; r = sc_read_binary ( card , 0 , ibuf , GEMSAFE_READ_QUANTUM , 0 ) ; if ( r < 0 ) return SC_ERROR_INTERNAL ; objlen = ( ( ( size_t ) ibuf [ 0 ] ) << 8 ) | ibuf [ 1 ] ; sc_log ( card -> ctx , \"Stored<S2SV_blank>object<S2SV_blank>is<S2SV_blank>of<S2SV_blank>size:<S2SV_blank>%\" SC_FORMAT_LEN_SIZE_T \"u\" , objlen ) ; if ( objlen < 1 || objlen > GEMSAFE_MAX_OBJLEN ) { sc_log ( card -> ctx , \"Invalid<S2SV_blank>object<S2SV_blank>size:<S2SV_blank>%\" SC_FORMAT_LEN_SIZE_T \"u\" , objlen ) ; return SC_ERROR_INTERNAL ; } ind = 2 ; <S2SV_StartBug> while ( ibuf [ ind ] == 0x01 ) { <S2SV_EndBug> if ( ibuf [ ind + 1 ] == 0xFE ) { gemsafe_prkeys [ i ] . ref = ibuf [ ind + 4 ] ; sc_log ( card -> ctx , \"Key<S2SV_blank>container<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>allocated<S2SV_blank>and<S2SV_blank>uses<S2SV_blank>key_ref<S2SV_blank>%d\" , i + 1 , gemsafe_prkeys [ i ] . ref ) ; ind += 9 ; } else { gemsafe_prkeys [ i ] . label = NULL ; gemsafe_cert [ i ] . label = NULL ; sc_log ( card -> ctx , \"Key<S2SV_blank>container<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>unallocated\" , i + 1 ) ; ind += 8 ; } i ++ ; } for ( ; i < gemsafe_cert_max ; i ++ ) { gemsafe_prkeys [ i ] . label = NULL ; gemsafe_cert [ i ] . label = NULL ; } iptr = ibuf + GEMSAFE_READ_QUANTUM ; while ( ( size_t ) ( iptr - ibuf ) < objlen ) { r = sc_read_binary ( card , iptr - ibuf , iptr , MIN ( GEMSAFE_READ_QUANTUM , objlen - ( iptr - ibuf ) ) , 0 ) ; if ( r < 0 ) { sc_log ( card -> ctx , \"Could<S2SV_blank>not<S2SV_blank>read<S2SV_blank>cert<S2SV_blank>object\" ) ; return SC_ERROR_INTERNAL ; } iptr += GEMSAFE_READ_QUANTUM ; } i = 0 ; while ( ind < objlen - 1 ) { if ( ibuf [ ind ] == 0x30 && ibuf [ ind + 1 ] == 0x82 ) { while ( i < gemsafe_cert_max && gemsafe_cert [ i ] . label == NULL ) i ++ ; if ( i == gemsafe_cert_max ) { sc_log ( card -> ctx , \"Warning:<S2SV_blank>Found<S2SV_blank>orphaned<S2SV_blank>certificate<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%d\" , ind ) ; return SC_SUCCESS ; } if ( ind + 3 >= sizeof ibuf ) return SC_ERROR_INVALID_DATA ; certlen = ( ( ( ( size_t ) ibuf [ ind + 2 ] ) << 8 ) | ibuf [ ind + 3 ] ) + 4 ; sc_log ( card -> ctx , \"Found<S2SV_blank>certificate<S2SV_blank>of<S2SV_blank>key<S2SV_blank>container<S2SV_blank>%d<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%d,<S2SV_blank>len<S2SV_blank>%\" SC_FORMAT_LEN_SIZE_T \"u\" , i + 1 , ind , certlen ) ; gemsafe_cert [ i ] . index = ind ; gemsafe_cert [ i ] . count = certlen ; ind += certlen ; i ++ ; } else ind ++ ; } for ( ; i < gemsafe_cert_max ; i ++ ) { if ( gemsafe_cert [ i ] . label ) { sc_log ( card -> ctx , \"Warning:<S2SV_blank>Certificate<S2SV_blank>of<S2SV_blank>key<S2SV_blank>container<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>missing\" , i + 1 ) ; gemsafe_prkeys [ i ] . label = NULL ; gemsafe_cert [ i ] . label = NULL ; } } return SC_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] == 0x01 && i < gemsafe_cert_max\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4264\n\n```\nCWE-119 static int kempf_decode_tile ( G2MContext * c , int tile_x , int tile_y , const uint8_t * src , int src_size ) { int width , height ; int hdr , zsize , npal , tidx = - 1 , ret ; int i , j ; const uint8_t * src_end = src + src_size ; uint8_t pal [ 768 ] , transp [ 3 ] ; uLongf dlen = ( c -> tile_width + 1 ) * c -> tile_height ; int sub_type ; int nblocks , cblocks , bstride ; int bits , bitbuf , coded ; uint8_t * dst = c -> framebuf + tile_x * c -> tile_width * 3 + tile_y * c -> tile_height * c -> framebuf_stride ; if ( src_size < 2 ) return AVERROR_INVALIDDATA ; width = FFMIN ( c -> width - tile_x * c -> tile_width , c -> tile_width ) ; height = FFMIN ( c -> height - tile_y * c -> tile_height , c -> tile_height ) ; hdr = * src ++ ; sub_type = hdr >> 5 ; if ( sub_type == 0 ) { int j ; memcpy ( transp , src , 3 ) ; src += 3 ; for ( j = 0 ; j < height ; j ++ , dst += c -> framebuf_stride ) for ( i = 0 ; i < width ; i ++ ) memcpy ( dst + i * 3 , transp , 3 ) ; return 0 ; } else if ( sub_type == 1 ) { return jpg_decode_data ( & c -> jc , width , height , src , src_end - src , dst , c -> framebuf_stride , NULL , 0 , 0 , 0 ) ; } if ( sub_type != 2 ) { memcpy ( transp , src , 3 ) ; src += 3 ; } npal = * src ++ + 1 ; memcpy ( pal , src , npal * 3 ) ; src += npal * 3 ; if ( sub_type != 2 ) { for ( i = 0 ; i < npal ; i ++ ) { if ( ! memcmp ( pal + i * 3 , transp , 3 ) ) { tidx = i ; break ; } } } if ( src_end - src < 2 ) return 0 ; zsize = ( src [ 0 ] << 8 ) | src [ 1 ] ; src += 2 ; <S2SV_StartBug> if ( src_end - src < zsize ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; ret = uncompress ( c -> kempf_buf , & dlen , src , zsize ) ; if ( ret ) return AVERROR_INVALIDDATA ; src += zsize ; if ( sub_type == 2 ) { kempf_restore_buf ( c -> kempf_buf , dlen , dst , c -> framebuf_stride , NULL , 0 , width , height , pal , npal , tidx ) ; return 0 ; } nblocks = * src ++ + 1 ; cblocks = 0 ; bstride = FFALIGN ( width , 16 ) >> 4 ; bits = 0 ; for ( i = 0 ; i < ( FFALIGN ( height , 16 ) >> 4 ) ; i ++ ) { for ( j = 0 ; j < ( FFALIGN ( width , 16 ) >> 4 ) ; j ++ ) { if ( ! bits ) { <S2SV_StartBug> bitbuf = * src ++ ; <S2SV_EndBug> bits = 8 ; } coded = bitbuf & 1 ; bits -- ; bitbuf >>= 1 ; cblocks += coded ; if ( cblocks > nblocks ) return AVERROR_INVALIDDATA ; c -> kempf_flags [ j + i * bstride ] = coded ; } } memset ( c -> jpeg_tile , 0 , c -> tile_stride * height ) ; jpg_decode_data ( & c -> jc , width , height , src , src_end - src , c -> jpeg_tile , c -> tile_stride , c -> kempf_flags , bstride , nblocks , 0 ) ; kempf_restore_buf ( c -> kempf_buf , dlen , dst , c -> framebuf_stride , c -> jpeg_tile , c -> tile_stride , width , height , pal , npal , tidx ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> src < zsize + ( sub_type != 2 ) <S2SV_ModStart> bits ) { if ( src >= src_end ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10191\n\n```\nCWE-119 static int rtmp_packet_read_one_chunk ( URLContext * h , RTMPPacket * p , int chunk_size , RTMPPacket * * prev_pkt_ptr , int * nb_prev_pkt , uint8_t hdr ) { uint8_t buf [ 16 ] ; int channel_id , timestamp , size ; uint32_t ts_field ; uint32_t extra = 0 ; enum RTMPPacketType type ; int written = 0 ; int ret , toread ; RTMPPacket * prev_pkt ; written ++ ; channel_id = hdr & 0x3F ; if ( channel_id < 2 ) { buf [ 1 ] = 0 ; if ( ffurl_read_complete ( h , buf , channel_id + 1 ) != channel_id + 1 ) return AVERROR ( EIO ) ; written += channel_id + 1 ; channel_id = AV_RL16 ( buf ) + 64 ; } if ( ( ret = ff_rtmp_check_alloc_array ( prev_pkt_ptr , nb_prev_pkt , channel_id ) ) < 0 ) return ret ; prev_pkt = * prev_pkt_ptr ; size = prev_pkt [ channel_id ] . size ; type = prev_pkt [ channel_id ] . type ; extra = prev_pkt [ channel_id ] . extra ; hdr >>= 6 ; if ( hdr == RTMP_PS_ONEBYTE ) { ts_field = prev_pkt [ channel_id ] . ts_field ; } else { if ( ffurl_read_complete ( h , buf , 3 ) != 3 ) return AVERROR ( EIO ) ; written += 3 ; ts_field = AV_RB24 ( buf ) ; if ( hdr != RTMP_PS_FOURBYTES ) { if ( ffurl_read_complete ( h , buf , 3 ) != 3 ) return AVERROR ( EIO ) ; written += 3 ; size = AV_RB24 ( buf ) ; if ( ffurl_read_complete ( h , buf , 1 ) != 1 ) return AVERROR ( EIO ) ; written ++ ; type = buf [ 0 ] ; if ( hdr == RTMP_PS_TWELVEBYTES ) { if ( ffurl_read_complete ( h , buf , 4 ) != 4 ) return AVERROR ( EIO ) ; written += 4 ; extra = AV_RL32 ( buf ) ; } } } if ( ts_field == 0xFFFFFF ) { if ( ffurl_read_complete ( h , buf , 4 ) != 4 ) return AVERROR ( EIO ) ; timestamp = AV_RB32 ( buf ) ; } else { timestamp = ts_field ; } if ( hdr != RTMP_PS_TWELVEBYTES ) timestamp += prev_pkt [ channel_id ] . timestamp ; <S2SV_StartBug> if ( ! prev_pkt [ channel_id ] . read ) { <S2SV_EndBug> if ( ( ret = ff_rtmp_packet_create ( p , channel_id , type , timestamp , size ) ) < 0 ) return ret ; p -> read = written ; p -> offset = 0 ; prev_pkt [ channel_id ] . ts_field = ts_field ; prev_pkt [ channel_id ] . timestamp = timestamp ; } else { RTMPPacket * prev = & prev_pkt [ channel_id ] ; p -> data = prev -> data ; p -> size = prev -> size ; p -> channel_id = prev -> channel_id ; p -> type = prev -> type ; p -> ts_field = prev -> ts_field ; p -> extra = prev -> extra ; p -> offset = prev -> offset ; p -> read = prev -> read + written ; p -> timestamp = prev -> timestamp ; prev -> data = NULL ; } p -> extra = extra ; prev_pkt [ channel_id ] . channel_id = channel_id ; prev_pkt [ channel_id ] . type = type ; prev_pkt [ channel_id ] . size = size ; prev_pkt [ channel_id ] . extra = extra ; size = size - p -> offset ; toread = FFMIN ( size , chunk_size ) ; if ( ffurl_read_complete ( h , p -> data + p -> offset , toread ) != toread ) { ff_rtmp_packet_destroy ( p ) ; return AVERROR ( EIO ) ; } size -= toread ; p -> read += toread ; p -> offset += toread ; if ( size > 0 ) { RTMPPacket * prev = & prev_pkt [ channel_id ] ; prev -> data = p -> data ; prev -> read = p -> read ; prev -> offset = p -> offset ; p -> data = NULL ; return AVERROR ( EAGAIN ) ; } prev_pkt [ channel_id ] . read = 0 ; return p -> read ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( prev_pkt [ channel_id ] . read && size != prev_pkt [ channel_id ] . size ) { av_log ( NULL , AV_LOG_ERROR , \"RTMP<S2SV_blank>packet<S2SV_blank>size<S2SV_blank>mismatch<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>%d\\\\n\" , size , prev_pkt [ channel_id ] . size ) ; ff_rtmp_packet_destroy ( & prev_pkt [ channel_id ] ) ; prev_pkt [ channel_id ] . read = 0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 SQLITE_PRIVATE SrcList * sqlite3SrcListEnlarge ( Parse * pParse , SrcList * pSrc , int nExtra , int iStart ) { int i ; assert ( iStart >= 0 ) ; assert ( nExtra >= 1 ) ; assert ( pSrc != 0 ) ; assert ( iStart <= pSrc -> nSrc ) ; if ( ( u32 ) pSrc -> nSrc + nExtra > pSrc -> nAlloc ) { SrcList * pNew ; <S2SV_StartBug> int nAlloc = pSrc -> nSrc * 2 + nExtra ; <S2SV_EndBug> sqlite3 * db = pParse -> db ; if ( pSrc -> nSrc + nExtra >= SQLITE_MAX_SRCLIST ) { sqlite3ErrorMsg ( pParse , \"too<S2SV_blank>many<S2SV_blank>FROM<S2SV_blank>clause<S2SV_blank>terms,<S2SV_blank>max:<S2SV_blank>%d\" , SQLITE_MAX_SRCLIST ) ; return 0 ; } if ( nAlloc > SQLITE_MAX_SRCLIST ) nAlloc = SQLITE_MAX_SRCLIST ; pNew = sqlite3DbRealloc ( db , pSrc , sizeof ( * pSrc ) + ( nAlloc - 1 ) * sizeof ( pSrc -> a [ 0 ] ) ) ; if ( pNew == 0 ) { assert ( db -> mallocFailed ) ; return 0 ; } pSrc = pNew ; pSrc -> nAlloc = nAlloc ; } for ( i = pSrc -> nSrc - 1 ; i >= iStart ; i -- ) { pSrc -> a [ i + nExtra ] = pSrc -> a [ i ] ; } pSrc -> nSrc += nExtra ; memset ( & pSrc -> a [ iStart ] , 0 , sizeof ( pSrc -> a [ 0 ] ) * nExtra ) ; for ( i = iStart ; i < iStart + nExtra ; i ++ ) { pSrc -> a [ i ] . iCursor = - 1 ; } return pSrc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * pNew ; sqlite3_int64 nAlloc = 2 * ( sqlite3_int64 ) pSrc -> nSrc <S2SV_ModEnd> + nExtra ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static int get_gate_page ( struct mm_struct * mm , unsigned long address , unsigned int gup_flags , struct vm_area_struct * * vma , struct page * * page ) { pgd_t * pgd ; p4d_t * p4d ; pud_t * pud ; pmd_t * pmd ; pte_t * pte ; int ret = - EFAULT ; if ( gup_flags & FOLL_WRITE ) return - EFAULT ; if ( address > TASK_SIZE ) pgd = pgd_offset_k ( address ) ; else pgd = pgd_offset_gate ( mm , address ) ; BUG_ON ( pgd_none ( * pgd ) ) ; p4d = p4d_offset ( pgd , address ) ; BUG_ON ( p4d_none ( * p4d ) ) ; pud = pud_offset ( p4d , address ) ; BUG_ON ( pud_none ( * pud ) ) ; pmd = pmd_offset ( pud , address ) ; if ( ! pmd_present ( * pmd ) ) return - EFAULT ; VM_BUG_ON ( pmd_trans_huge ( * pmd ) ) ; pte = pte_offset_map ( pmd , address ) ; if ( pte_none ( * pte ) ) goto unmap ; * vma = get_gate_vma ( mm ) ; if ( ! page ) goto out ; * page = vm_normal_page ( * vma , address , * pte ) ; if ( ! * page ) { if ( ( gup_flags & FOLL_DUMP ) || ! is_zero_pfn ( pte_pfn ( * pte ) ) ) goto unmap ; * page = pte_page ( * pte ) ; if ( is_device_public_page ( * page ) ) goto unmap ; } <S2SV_StartBug> get_page ( * page ) ; <S2SV_EndBug> out : ret = 0 ; unmap : pte_unmap ( pte ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unmap ; } if ( unlikely ( ! try_get_page ( * page ) ) ) { ret = - ENOMEM ; goto unmap ; } <S2SV_ModEnd> out : ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { AVFilterContext * ctx = inlink -> dst ; LutContext * s = ctx -> priv ; AVFilterLink * outlink = ctx -> outputs [ 0 ] ; AVFrame * out ; uint8_t * inrow , * outrow , * inrow0 , * outrow0 ; int i , j , plane , direct = 0 ; if ( av_frame_is_writable ( in ) ) { direct = 1 ; out = in ; } else { out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; } if ( s -> is_rgb ) { inrow0 = in -> data [ 0 ] ; outrow0 = out -> data [ 0 ] ; for ( i = 0 ; i < in -> height ; i ++ ) { int w = inlink -> w ; const uint8_t ( * tab ) [ 256 ] = ( const uint8_t ( * ) [ 256 ] ) s -> lut ; inrow = inrow0 ; outrow = outrow0 ; for ( j = 0 ; j < w ; j ++ ) { switch ( s -> step ) { case 4 : outrow [ 3 ] = tab [ 3 ] [ inrow [ 3 ] ] ; case 3 : outrow [ 2 ] = tab [ 2 ] [ inrow [ 2 ] ] ; case 2 : outrow [ 1 ] = tab [ 1 ] [ inrow [ 1 ] ] ; default : outrow [ 0 ] = tab [ 0 ] [ inrow [ 0 ] ] ; } outrow += s -> step ; inrow += s -> step ; } inrow0 += in -> linesize [ 0 ] ; outrow0 += out -> linesize [ 0 ] ; } } else { <S2SV_StartBug> for ( plane = 0 ; plane < 4 && in -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> int vsub = plane == 1 || plane == 2 ? s -> vsub : 0 ; int hsub = plane == 1 || plane == 2 ? s -> hsub : 0 ; int h = FF_CEIL_RSHIFT ( inlink -> h , vsub ) ; int w = FF_CEIL_RSHIFT ( inlink -> w , hsub ) ; inrow = in -> data [ plane ] ; outrow = out -> data [ plane ] ; for ( i = 0 ; i < h ; i ++ ) { const uint8_t * tab = s -> lut [ plane ] ; for ( j = 0 ; j < w ; j ++ ) outrow [ j ] = tab [ inrow [ j ] ] ; inrow += in -> linesize [ plane ] ; outrow += out -> linesize [ plane ] ; } } } if ( ! direct ) av_frame_free ( & in ) ; return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ plane ] && in -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13725\n\n```\nCWE-125 int rt6_print ( netdissect_options * ndo , register const u_char * bp , const u_char * bp2 _U_ ) { register const struct ip6_rthdr * dp ; register const struct ip6_rthdr0 * dp0 ; register const u_char * ep ; int i , len ; register const struct in6_addr * addr ; dp = ( const struct ip6_rthdr * ) bp ; <S2SV_StartBug> len = dp -> ip6r_len ; <S2SV_EndBug> ep = ndo -> ndo_snapend ; ND_TCHECK ( dp -> ip6r_segleft ) ; ND_PRINT ( ( ndo , \"srcrt<S2SV_blank>(len=%d\" , dp -> ip6r_len ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>type=%d\" , dp -> ip6r_type ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>segleft=%d\" , dp -> ip6r_segleft ) ) ; switch ( dp -> ip6r_type ) { case IPV6_RTHDR_TYPE_0 : case IPV6_RTHDR_TYPE_2 : dp0 = ( const struct ip6_rthdr0 * ) dp ; ND_TCHECK ( dp0 -> ip6r0_reserved ) ; if ( dp0 -> ip6r0_reserved || ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \",<S2SV_blank>rsv=0x%0x\" , EXTRACT_32BITS ( & dp0 -> ip6r0_reserved ) ) ) ; } if ( len % 2 == 1 ) goto trunc ; len >>= 1 ; addr = & dp0 -> ip6r0_addr [ 0 ] ; for ( i = 0 ; i < len ; i ++ ) { if ( ( const u_char * ) ( addr + 1 ) > ep ) goto trunc ; ND_PRINT ( ( ndo , \",<S2SV_blank>[%d]%s\" , i , ip6addr_string ( ndo , addr ) ) ) ; addr ++ ; } ND_PRINT ( ( ndo , \")<S2SV_blank>\" ) ) ; return ( ( dp0 -> ip6r0_len + 1 ) << 3 ) ; break ; default : goto trunc ; break ; } trunc : ND_PRINT ( ( ndo , \"[|srcrt]\" ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) bp ; ep = ndo -> ndo_snapend ; ND_TCHECK ( dp -> ip6r_segleft ) ; <S2SV_ModStart> dp -> ip6r_len <S2SV_ModEnd> ; ND_PRINT (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-674 static void Sp_replace_regexp ( js_State * J ) { js_Regexp * re ; const char * source , * s , * r ; js_Buffer * sb = NULL ; int n , x ; Resub m ; source = checkstring ( J , 0 ) ; re = js_toregexp ( J , 1 ) ; <S2SV_StartBug> if ( js_regexec ( re -> prog , source , & m , 0 ) ) { <S2SV_EndBug> js_copy ( J , 0 ) ; return ; } re -> last = 0 ; loop : s = m . sub [ 0 ] . sp ; n = m . sub [ 0 ] . ep - m . sub [ 0 ] . sp ; if ( js_iscallable ( J , 2 ) ) { js_copy ( J , 2 ) ; js_pushundefined ( J ) ; for ( x = 0 ; m . sub [ x ] . sp ; ++ x ) js_pushlstring ( J , m . sub [ x ] . sp , m . sub [ x ] . ep - m . sub [ x ] . sp ) ; js_pushnumber ( J , s - source ) ; js_copy ( J , 0 ) ; js_call ( J , 2 + x ) ; r = js_tostring ( J , - 1 ) ; js_putm ( J , & sb , source , s ) ; js_puts ( J , & sb , r ) ; js_pop ( J , 1 ) ; } else { r = js_tostring ( J , 2 ) ; js_putm ( J , & sb , source , s ) ; while ( * r ) { if ( * r == '$' ) { switch ( * ( ++ r ) ) { case 0 : -- r ; case '$' : js_putc ( J , & sb , '$' ) ; break ; case '`' : js_putm ( J , & sb , source , s ) ; break ; case '\\\\'' : js_puts ( J , & sb , s + n ) ; break ; case '&' : js_putm ( J , & sb , s , s + n ) ; break ; case '0' : case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : x = * r - '0' ; if ( r [ 1 ] >= '0' && r [ 1 ] <= '9' ) x = x * 10 + * ( ++ r ) - '0' ; if ( x > 0 && x < m . nsub ) { js_putm ( J , & sb , m . sub [ x ] . sp , m . sub [ x ] . ep ) ; } else { js_putc ( J , & sb , '$' ) ; if ( x > 10 ) { js_putc ( J , & sb , '0' + x / 10 ) ; js_putc ( J , & sb , '0' + x % 10 ) ; } else { js_putc ( J , & sb , '0' + x ) ; } } break ; default : js_putc ( J , & sb , '$' ) ; js_putc ( J , & sb , * r ) ; break ; } ++ r ; } else { js_putc ( J , & sb , * r ++ ) ; } } } if ( re -> flags & JS_REGEXP_G ) { source = m . sub [ 0 ] . ep ; if ( n == 0 ) { if ( * source ) js_putc ( J , & sb , * source ++ ) ; else goto end ; } <S2SV_StartBug> if ( ! js_regexec ( re -> prog , source , & m , REG_NOTBOL ) ) <S2SV_EndBug> goto loop ; } end : js_puts ( J , & sb , s + n ) ; js_putc ( J , & sb , 0 ) ; if ( js_try ( J ) ) { js_free ( J , sb ) ; js_throw ( J ) ; } js_pushstring ( J , sb ? sb -> s : \"\" ) ; js_endtry ( J ) ; js_free ( J , sb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( js_doregexec ( J , <S2SV_ModEnd> re -> prog <S2SV_ModStart> if ( ! js_doregexec ( J , <S2SV_ModEnd> re -> prog\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum hstore_from_arrays ( PG_FUNCTION_ARGS ) { int32 buflen ; HStore * out ; Pairs * pairs ; Datum * key_datums ; bool * key_nulls ; int key_count ; Datum * value_datums ; bool * value_nulls ; int value_count ; ArrayType * key_array ; ArrayType * value_array ; int i ; if ( PG_ARGISNULL ( 0 ) ) PG_RETURN_NULL ( ) ; key_array = PG_GETARG_ARRAYTYPE_P ( 0 ) ; Assert ( ARR_ELEMTYPE ( key_array ) == TEXTOID ) ; if ( ARR_NDIM ( key_array ) > 1 ) ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"wrong<S2SV_blank>number<S2SV_blank>of<S2SV_blank>array<S2SV_blank>subscripts\" ) ) ) ; deconstruct_array ( key_array , TEXTOID , - 1 , false , 'i' , <S2SV_StartBug> & key_datums , & key_nulls , & key_count ) ; <S2SV_EndBug> if ( PG_ARGISNULL ( 1 ) ) { value_array = NULL ; value_count = key_count ; value_datums = NULL ; value_nulls = NULL ; } else { value_array = PG_GETARG_ARRAYTYPE_P ( 1 ) ; Assert ( ARR_ELEMTYPE ( value_array ) == TEXTOID ) ; if ( ARR_NDIM ( value_array ) > 1 ) ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"wrong<S2SV_blank>number<S2SV_blank>of<S2SV_blank>array<S2SV_blank>subscripts\" ) ) ) ; if ( ( ARR_NDIM ( key_array ) > 0 || ARR_NDIM ( value_array ) > 0 ) && ( ARR_NDIM ( key_array ) != ARR_NDIM ( value_array ) || ARR_DIMS ( key_array ) [ 0 ] != ARR_DIMS ( value_array ) [ 0 ] || ARR_LBOUND ( key_array ) [ 0 ] != ARR_LBOUND ( value_array ) [ 0 ] ) ) ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"arrays<S2SV_blank>must<S2SV_blank>have<S2SV_blank>same<S2SV_blank>bounds\" ) ) ) ; deconstruct_array ( value_array , TEXTOID , - 1 , false , 'i' , & value_datums , & value_nulls , & value_count ) ; Assert ( key_count == value_count ) ; } pairs = palloc ( key_count * sizeof ( Pairs ) ) ; for ( i = 0 ; i < key_count ; ++ i ) { if ( key_nulls [ i ] ) ereport ( ERROR , ( errcode ( ERRCODE_NULL_VALUE_NOT_ALLOWED ) , errmsg ( \"null<S2SV_blank>value<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>for<S2SV_blank>hstore<S2SV_blank>key\" ) ) ) ; if ( ! value_nulls || value_nulls [ i ] ) { pairs [ i ] . key = VARDATA_ANY ( key_datums [ i ] ) ; pairs [ i ] . val = NULL ; pairs [ i ] . keylen = hstoreCheckKeyLen ( VARSIZE_ANY_EXHDR ( key_datums [ i ] ) ) ; pairs [ i ] . vallen = 4 ; pairs [ i ] . isnull = true ; pairs [ i ] . needfree = false ; } else { pairs [ i ] . key = VARDATA_ANY ( key_datums [ i ] ) ; pairs [ i ] . val = VARDATA_ANY ( value_datums [ i ] ) ; pairs [ i ] . keylen = hstoreCheckKeyLen ( VARSIZE_ANY_EXHDR ( key_datums [ i ] ) ) ; pairs [ i ] . vallen = hstoreCheckValLen ( VARSIZE_ANY_EXHDR ( value_datums [ i ] ) ) ; pairs [ i ] . isnull = false ; pairs [ i ] . needfree = false ; } } key_count = hstoreUniquePairs ( pairs , key_count , & buflen ) ; out = hstorePairs ( pairs , key_count , buflen ) ; PG_RETURN_POINTER ( out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , & key_count ) ; if ( key_count > MaxAllocSize / sizeof ( Pairs ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>pairs<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , key_count , ( int ) ( MaxAllocSize / sizeof ( Pairs ) ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8966\n\n```\nCWE-264 asmlinkage long sys_oabi_fcntl64 ( unsigned int fd , unsigned int cmd , unsigned long arg ) { <S2SV_StartBug> struct oabi_flock64 user ; <S2SV_EndBug> struct flock64 kernel ; mm_segment_t fs = USER_DS ; unsigned long local_arg = arg ; int ret ; switch ( cmd ) { case F_OFD_GETLK : case F_OFD_SETLK : case F_OFD_SETLKW : case F_GETLK64 : case F_SETLK64 : case F_SETLKW64 : <S2SV_StartBug> if ( copy_from_user ( & user , ( struct oabi_flock64 __user * ) arg , <S2SV_EndBug> sizeof ( user ) ) ) return - EFAULT ; kernel . l_type = user . l_type ; kernel . l_whence = user . l_whence ; kernel . l_start = user . l_start ; kernel . l_len = user . l_len ; kernel . l_pid = user . l_pid ; local_arg = ( unsigned long ) & kernel ; fs = get_fs ( ) ; set_fs ( KERNEL_DS ) ; } <S2SV_StartBug> ret = sys_fcntl64 ( fd , cmd , local_arg ) ; <S2SV_EndBug> switch ( cmd ) { case F_GETLK64 : if ( ! ret ) { user . l_type = kernel . l_type ; user . l_whence = kernel . l_whence ; user . l_start = kernel . l_start ; user . l_len = kernel . l_len ; user . l_pid = kernel . l_pid ; if ( copy_to_user ( ( struct oabi_flock64 __user * ) arg , & user , sizeof ( user ) ) ) ret = - EFAULT ; } case F_SETLK64 : case F_SETLKW64 : set_fs ( fs ) ; } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg ) { <S2SV_ModEnd> switch ( cmd <S2SV_ModStart> case F_SETLKW64 : return do_locks ( fd , cmd , arg ) ; default : return <S2SV_ModEnd> sys_fcntl64 ( fd <S2SV_ModStart> , cmd , arg <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7191\n\n```\nCWE-476 static int tun_set_iff ( struct net * net , struct file * file , struct ifreq * ifr ) { struct tun_struct * tun ; struct tun_file * tfile = file -> private_data ; struct net_device * dev ; int err ; if ( tfile -> detached ) return - EINVAL ; dev = __dev_get_by_name ( net , ifr -> ifr_name ) ; if ( dev ) { if ( ifr -> ifr_flags & IFF_TUN_EXCL ) return - EBUSY ; if ( ( ifr -> ifr_flags & IFF_TUN ) && dev -> netdev_ops == & tun_netdev_ops ) tun = netdev_priv ( dev ) ; else if ( ( ifr -> ifr_flags & IFF_TAP ) && dev -> netdev_ops == & tap_netdev_ops ) tun = netdev_priv ( dev ) ; else return - EINVAL ; if ( ! ! ( ifr -> ifr_flags & IFF_MULTI_QUEUE ) != ! ! ( tun -> flags & IFF_MULTI_QUEUE ) ) return - EINVAL ; if ( tun_not_capable ( tun ) ) return - EPERM ; err = security_tun_dev_open ( tun -> security ) ; if ( err < 0 ) return err ; err = tun_attach ( tun , file , ifr -> ifr_flags & IFF_NOFILTER ) ; if ( err < 0 ) return err ; if ( tun -> flags & IFF_MULTI_QUEUE && ( tun -> numqueues + tun -> numdisabled > 1 ) ) { return 0 ; } } else { char * name ; unsigned long flags = 0 ; int queues = ifr -> ifr_flags & IFF_MULTI_QUEUE ? MAX_TAP_QUEUES : 1 ; if ( ! ns_capable ( net -> user_ns , CAP_NET_ADMIN ) ) return - EPERM ; err = security_tun_dev_create ( ) ; if ( err < 0 ) return err ; if ( ifr -> ifr_flags & IFF_TUN ) { flags |= IFF_TUN ; name = \"tun%d\" ; } else if ( ifr -> ifr_flags & IFF_TAP ) { flags |= IFF_TAP ; name = \"tap%d\" ; } else return - EINVAL ; if ( * ifr -> ifr_name ) name = ifr -> ifr_name ; dev = alloc_netdev_mqs ( sizeof ( struct tun_struct ) , name , NET_NAME_UNKNOWN , tun_setup , queues , queues ) ; if ( ! dev ) return - ENOMEM ; err = dev_get_valid_name ( net , dev , name ) ; <S2SV_StartBug> if ( err ) <S2SV_EndBug> goto err_free_dev ; dev_net_set ( dev , net ) ; dev -> rtnl_link_ops = & tun_link_ops ; dev -> ifindex = tfile -> ifindex ; dev -> sysfs_groups [ 0 ] = & tun_attr_group ; tun = netdev_priv ( dev ) ; tun -> dev = dev ; tun -> flags = flags ; tun -> txflt . count = 0 ; tun -> vnet_hdr_sz = sizeof ( struct virtio_net_hdr ) ; tun -> align = NET_SKB_PAD ; tun -> filter_attached = false ; tun -> sndbuf = tfile -> socket . sk -> sk_sndbuf ; tun -> rx_batched = 0 ; tun -> pcpu_stats = netdev_alloc_pcpu_stats ( struct tun_pcpu_stats ) ; if ( ! tun -> pcpu_stats ) { err = - ENOMEM ; goto err_free_dev ; } spin_lock_init ( & tun -> lock ) ; err = security_tun_dev_alloc_security ( & tun -> security ) ; if ( err < 0 ) goto err_free_stat ; tun_net_init ( dev ) ; tun_flow_init ( tun ) ; dev -> hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | TUN_USER_FEATURES | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX ; dev -> features = dev -> hw_features | NETIF_F_LLTX ; dev -> vlan_features = dev -> features & ~ ( NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX ) ; INIT_LIST_HEAD ( & tun -> disabled ) ; err = tun_attach ( tun , file , false ) ; if ( err < 0 ) goto err_free_flow ; err = register_netdevice ( tun -> dev ) ; if ( err < 0 ) goto err_detach ; } netif_carrier_on ( tun -> dev ) ; tun_debug ( KERN_INFO , tun , \"tun_set_iff\\\\n\" ) ; tun -> flags = ( tun -> flags & ~ TUN_FEATURES ) | ( ifr -> ifr_flags & TUN_FEATURES ) ; if ( netif_running ( tun -> dev ) ) netif_tx_wake_all_queues ( tun -> dev ) ; strcpy ( ifr -> ifr_name , tun -> dev -> name ) ; return 0 ; err_detach : tun_detach_all ( dev ) ; goto err_free_dev ; err_free_flow : tun_flow_uninit ( tun ) ; security_tun_dev_free_security ( tun -> security ) ; err_free_stat : free_percpu ( tun -> pcpu_stats ) ; err_free_dev : free_netdev ( dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( err < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14680\n\n```\nCWE-20 static int chmd_read_headers ( struct mspack_system * sys , struct mspack_file * fh , struct mschmd_header * chm , int entire ) { unsigned int section , name_len , x , errors , num_chunks ; unsigned char buf [ 0x54 ] , * chunk = NULL , * name , * p , * end ; struct mschmd_file * fi , * link = NULL ; off_t offset , length ; int num_entries ; chm -> files = NULL ; chm -> sysfiles = NULL ; chm -> chunk_cache = NULL ; chm -> sec0 . base . chm = chm ; chm -> sec0 . base . id = 0 ; chm -> sec1 . base . chm = chm ; chm -> sec1 . base . id = 1 ; chm -> sec1 . content = NULL ; chm -> sec1 . control = NULL ; chm -> sec1 . spaninfo = NULL ; chm -> sec1 . rtable = NULL ; if ( sys -> read ( fh , & buf [ 0 ] , chmhead_SIZEOF ) != chmhead_SIZEOF ) { return MSPACK_ERR_READ ; } if ( EndGetI32 ( & buf [ chmhead_Signature ] ) != 0x46535449 ) { return MSPACK_ERR_SIGNATURE ; } if ( mspack_memcmp ( & buf [ chmhead_GUID1 ] , & guids [ 0 ] , 32L ) != 0 ) { D ( ( \"incorrect<S2SV_blank>GUIDs\" ) ) return MSPACK_ERR_SIGNATURE ; } chm -> version = EndGetI32 ( & buf [ chmhead_Version ] ) ; chm -> timestamp = EndGetM32 ( & buf [ chmhead_Timestamp ] ) ; chm -> language = EndGetI32 ( & buf [ chmhead_LanguageID ] ) ; if ( chm -> version > 3 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>CHM<S2SV_blank>version<S2SV_blank>><S2SV_blank>3\" ) ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhst3_SIZEOF ) != chmhst3_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & offset , & buf [ chmhst_OffsetHS0 ] , sys , fh ) || read_off64 ( & chm -> dir_offset , & buf [ chmhst_OffsetHS1 ] , sys , fh ) || read_off64 ( & chm -> sec0 . offset , & buf [ chmhst3_OffsetCS0 ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs0_SIZEOF ) != chmhs0_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & chm -> length , & buf [ chmhs0_FileLen ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , chm -> dir_offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs1_SIZEOF ) != chmhs1_SIZEOF ) { return MSPACK_ERR_READ ; } chm -> dir_offset = sys -> tell ( fh ) ; chm -> chunk_size = EndGetI32 ( & buf [ chmhs1_ChunkSize ] ) ; chm -> density = EndGetI32 ( & buf [ chmhs1_Density ] ) ; chm -> depth = EndGetI32 ( & buf [ chmhs1_Depth ] ) ; chm -> index_root = EndGetI32 ( & buf [ chmhs1_IndexRoot ] ) ; chm -> num_chunks = EndGetI32 ( & buf [ chmhs1_NumChunks ] ) ; chm -> first_pmgl = EndGetI32 ( & buf [ chmhs1_FirstPMGL ] ) ; chm -> last_pmgl = EndGetI32 ( & buf [ chmhs1_LastPMGL ] ) ; if ( chm -> version < 3 ) { chm -> sec0 . offset = chm -> dir_offset + ( chm -> chunk_size * chm -> num_chunks ) ; } if ( chm -> sec0 . offset > chm -> length ) { D ( ( \"content<S2SV_blank>section<S2SV_blank>begins<S2SV_blank>after<S2SV_blank>file<S2SV_blank>has<S2SV_blank>ended\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> chunk_size < ( pmgl_Entries + 2 ) ) { D ( ( \"chunk<S2SV_blank>size<S2SV_blank>not<S2SV_blank>large<S2SV_blank>enough\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks == 0 ) { D ( ( \"no<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks > 100000 ) { D ( ( \"more<S2SV_blank>than<S2SV_blank>100,000<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( off_t ) chm -> chunk_size * ( off_t ) chm -> num_chunks > chm -> length ) { D ( ( \"chunks<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>entire<S2SV_blank>file\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( chm -> chunk_size & ( chm -> chunk_size - 1 ) ) != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>two\" ) ; } if ( chm -> first_pmgl != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>first<S2SV_blank>PMGL<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>not<S2SV_blank>zero\" ) ; } if ( chm -> first_pmgl > chm -> last_pmgl ) { D ( ( \"first<S2SV_blank>pmgl<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>after<S2SV_blank>last<S2SV_blank>pmgl<S2SV_blank>chunk\" ) ) return MSPACK_ERR_DATAFORMAT ; } <S2SV_StartBug> if ( chm -> index_root != 0xFFFFFFFF && chm -> index_root > chm -> num_chunks ) { <S2SV_EndBug> D ( ( \"index_root<S2SV_blank>outside<S2SV_blank>valid<S2SV_blank>range\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ! entire ) { return MSPACK_ERR_OK ; } if ( ( x = chm -> first_pmgl ) != 0 ) { if ( sys -> seek ( fh , ( off_t ) ( x * chm -> chunk_size ) , MSPACK_SYS_SEEK_CUR ) ) { return MSPACK_ERR_SEEK ; } } num_chunks = chm -> last_pmgl - x + 1 ; if ( ! ( chunk = ( unsigned char * ) sys -> alloc ( sys , ( size_t ) chm -> chunk_size ) ) ) { return MSPACK_ERR_NOMEMORY ; } errors = 0 ; while ( num_chunks -- ) { if ( sys -> read ( fh , chunk , ( int ) chm -> chunk_size ) != ( int ) chm -> chunk_size ) { sys -> free ( chunk ) ; return MSPACK_ERR_READ ; } if ( EndGetI32 ( & chunk [ pmgl_Signature ] ) != 0x4C474D50 ) continue ; if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) < 2 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\" ) ; } if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) > ( ( int ) chm -> chunk_size - pmgl_Entries ) ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ; } p = & chunk [ pmgl_Entries ] ; end = & chunk [ chm -> chunk_size - 2 ] ; num_entries = EndGetI16 ( end ) ; while ( num_entries -- ) { READ_ENCINT ( name_len ) ; if ( name_len > ( unsigned int ) ( end - p ) ) goto chunk_end ; <S2SV_StartBug> name = p ; p += name_len ; <S2SV_EndBug> READ_ENCINT ( section ) ; READ_ENCINT ( offset ) ; READ_ENCINT ( length ) ; if ( ( offset == 0 ) && ( length == 0 ) ) { if ( ( name_len > 0 ) && ( name [ name_len - 1 ] == '/' ) ) continue ; } if ( section > 1 ) { sys -> message ( fh , \"invalid<S2SV_blank>section<S2SV_blank>number<S2SV_blank>\\'%u\\'.\" , section ) ; continue ; } if ( ! ( fi = ( struct mschmd_file * ) sys -> alloc ( sys , sizeof ( struct mschmd_file ) + name_len + 1 ) ) ) { sys -> free ( chunk ) ; return MSPACK_ERR_NOMEMORY ; } fi -> next = NULL ; fi -> filename = ( char * ) & fi [ 1 ] ; fi -> section = ( ( section == 0 ) ? ( struct mschmd_section * ) ( & chm -> sec0 ) : ( struct mschmd_section * ) ( & chm -> sec1 ) ) ; fi -> offset = offset ; fi -> length = length ; sys -> copy ( name , fi -> filename , ( size_t ) name_len ) ; fi -> filename [ name_len ] = '\\\\0' ; if ( name [ 0 ] == ':' && name [ 1 ] == ':' ) { if ( mspack_memcmp ( & name [ 2 ] , & content_name [ 2 ] , 31L ) == 0 ) { if ( mspack_memcmp ( & name [ 33 ] , & content_name [ 33 ] , 8L ) == 0 ) { chm -> sec1 . content = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & control_name [ 33 ] , 11L ) == 0 ) { chm -> sec1 . control = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & spaninfo_name [ 33 ] , 8L ) == 0 ) { chm -> sec1 . spaninfo = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & rtable_name [ 33 ] , 72L ) == 0 ) { chm -> sec1 . rtable = fi ; } } fi -> next = chm -> sysfiles ; chm -> sysfiles = fi ; } else { if ( link ) link -> next = fi ; else chm -> files = fi ; link = fi ; } } chunk_end : if ( num_entries >= 0 ) { D ( ( \"chunk<S2SV_blank>ended<S2SV_blank>before<S2SV_blank>all<S2SV_blank>entries<S2SV_blank>could<S2SV_blank>be<S2SV_blank>read\" ) ) errors ++ ; } } sys -> free ( chunk ) ; return ( errors > 0 ) ? MSPACK_ERR_DATAFORMAT : MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> chm -> index_root >= <S2SV_ModEnd> chm -> num_chunks <S2SV_ModStart> goto chunk_end ; if ( name_len == 0 ) goto chunk_end ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _consolefs_read ( oe_fd_t * file_ , void * buf , size_t count ) { ssize_t ret = - 1 ; file_t * file = _cast_file ( file_ ) ; <S2SV_StartBug> if ( ! file ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( oe_syscall_read_ocall ( & ret , file -> host_fd , buf , count ) != OE_OK ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> done : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! file || count > OE_SSIZE_MAX <S2SV_ModStart> OE_EINVAL ) ; if ( ret > ( ssize_t ) count ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11379\n\n```\nCWE-125 static void get_nb10 ( ut8 * dbg_data , SCV_NB10_HEADER * res ) { const int nb10sz = 16 ; <S2SV_StartBug> memcpy ( res , dbg_data , nb10sz ) ; <S2SV_EndBug> res -> file_name = ( ut8 * ) strdup ( ( const char * ) dbg_data + nb10sz ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 16 ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15862\n\n```\nCWE-476 static bool LookupModMask ( struct xkb_context * ctx , const void * priv , xkb_atom_t field , enum expr_value_type type , xkb_mod_mask_t * val_rtrn ) { const char * str ; xkb_mod_index_t ndx ; const LookupModMaskPriv * arg = priv ; const struct xkb_mod_set * mods = arg -> mods ; enum mod_type mod_type = arg -> mod_type ; if ( type != EXPR_TYPE_INT ) return false ; str = xkb_atom_text ( ctx , field ) ; <S2SV_StartBug> if ( istreq ( str , \"all\" ) ) { <S2SV_EndBug> * val_rtrn = MOD_REAL_MASK_ALL ; return true ; } if ( istreq ( str , \"none\" ) ) { * val_rtrn = 0 ; return true ; } ndx = XkbModNameToIndex ( mods , field , mod_type ) ; if ( ndx == XKB_MOD_INVALID ) return false ; * val_rtrn = ( 1u << ndx ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! str ) return false ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6937\n\n```\nCWE-000 static struct rds_connection * __rds_conn_create ( struct net * net , __be32 laddr , __be32 faddr , struct rds_transport * trans , gfp_t gfp , int is_outgoing ) { struct rds_connection * conn , * parent = NULL ; struct hlist_head * head = rds_conn_bucket ( laddr , faddr ) ; struct rds_transport * loop_trans ; unsigned long flags ; int ret ; struct rds_transport * otrans = trans ; if ( ! is_outgoing && otrans -> t_type == RDS_TRANS_TCP ) goto new_conn ; rcu_read_lock ( ) ; conn = rds_conn_lookup ( net , head , laddr , faddr , trans ) ; if ( conn && conn -> c_loopback && conn -> c_trans != & rds_loop_transport && laddr == faddr && ! is_outgoing ) { parent = conn ; conn = parent -> c_passive ; } rcu_read_unlock ( ) ; if ( conn ) goto out ; new_conn : conn = kmem_cache_zalloc ( rds_conn_slab , gfp ) ; if ( ! conn ) { conn = ERR_PTR ( - ENOMEM ) ; goto out ; } INIT_HLIST_NODE ( & conn -> c_hash_node ) ; conn -> c_laddr = laddr ; conn -> c_faddr = faddr ; spin_lock_init ( & conn -> c_lock ) ; conn -> c_next_tx_seq = 1 ; rds_conn_net_set ( conn , net ) ; init_waitqueue_head ( & conn -> c_waitq ) ; INIT_LIST_HEAD ( & conn -> c_send_queue ) ; INIT_LIST_HEAD ( & conn -> c_retrans ) ; ret = rds_cong_get_maps ( conn ) ; if ( ret ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( ret ) ; goto out ; } loop_trans = rds_trans_get_preferred ( net , faddr ) ; if ( loop_trans ) { rds_trans_put ( loop_trans ) ; conn -> c_loopback = 1 ; if ( is_outgoing && trans -> t_prefer_loopback ) { trans = & rds_loop_transport ; } } <S2SV_StartBug> conn -> c_trans = trans ; <S2SV_EndBug> ret = trans -> conn_alloc ( conn , gfp ) ; if ( ret ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( ret ) ; goto out ; } atomic_set ( & conn -> c_state , RDS_CONN_DOWN ) ; conn -> c_send_gen = 0 ; conn -> c_reconnect_jiffies = 0 ; INIT_DELAYED_WORK ( & conn -> c_send_w , rds_send_worker ) ; INIT_DELAYED_WORK ( & conn -> c_recv_w , rds_recv_worker ) ; INIT_DELAYED_WORK ( & conn -> c_conn_w , rds_connect_worker ) ; INIT_WORK ( & conn -> c_down_w , rds_shutdown_worker ) ; mutex_init ( & conn -> c_cm_lock ) ; conn -> c_flags = 0 ; rdsdebug ( \"allocated<S2SV_blank>conn<S2SV_blank>%p<S2SV_blank>for<S2SV_blank>%pI4<S2SV_blank>-><S2SV_blank>%pI4<S2SV_blank>over<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , conn , & laddr , & faddr , trans -> t_name ? trans -> t_name : \"[unknown]\" , is_outgoing ? \"(outgoing)\" : \"\" ) ; spin_lock_irqsave ( & rds_conn_lock , flags ) ; if ( parent ) { if ( parent -> c_passive ) { trans -> conn_free ( conn -> c_transport_data ) ; kmem_cache_free ( rds_conn_slab , conn ) ; conn = parent -> c_passive ; } else { parent -> c_passive = conn ; rds_cong_add_conn ( conn ) ; rds_conn_count ++ ; } } else { struct rds_connection * found ; if ( ! is_outgoing && otrans -> t_type == RDS_TRANS_TCP ) found = NULL ; else found = rds_conn_lookup ( net , head , laddr , faddr , trans ) ; if ( found ) { trans -> conn_free ( conn -> c_transport_data ) ; kmem_cache_free ( rds_conn_slab , conn ) ; conn = found ; } else { if ( ( is_outgoing && otrans -> t_type == RDS_TRANS_TCP ) || ( otrans -> t_type != RDS_TRANS_TCP ) ) { hlist_add_head_rcu ( & conn -> c_hash_node , head ) ; } rds_cong_add_conn ( conn ) ; rds_conn_count ++ ; } } spin_unlock_irqrestore ( & rds_conn_lock , flags ) ; out : return conn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( trans == NULL ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( - ENODEV ) ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3226\n\n```\nCWE-200 static int sco_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sco_pinfo * pi = sco_pi ( sk ) ; lock_sock ( sk ) ; if ( sk -> sk_state == BT_CONNECT2 && test_bit ( BT_SK_DEFER_SETUP , & bt_sk ( sk ) -> flags ) ) { hci_conn_accept ( pi -> conn -> hcon , 0 ) ; sk -> sk_state = BT_CONFIG ; <S2SV_StartBug> release_sock ( sk ) ; <S2SV_EndBug> return 0 ; } release_sock ( sk ) ; return bt_sock_recvmsg ( iocb , sock , msg , len , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = BT_CONFIG ; msg -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int num_stmts ( const node * n ) { int i , l ; node * ch ; switch ( TYPE ( n ) ) { case single_input : if ( TYPE ( CHILD ( n , 0 ) ) == NEWLINE ) return 0 ; else return num_stmts ( CHILD ( n , 0 ) ) ; case file_input : l = 0 ; for ( i = 0 ; i < NCH ( n ) ; i ++ ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == stmt ) l += num_stmts ( ch ) ; } return l ; case stmt : return num_stmts ( CHILD ( n , 0 ) ) ; case compound_stmt : return 1 ; case simple_stmt : return NCH ( n ) / 2 ; case suite : <S2SV_StartBug> if ( NCH ( n ) == 1 ) <S2SV_EndBug> return num_stmts ( CHILD ( n , 0 ) ) ; else { <S2SV_StartBug> l = 0 ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 2 ; i < ( NCH ( n ) - 1 ) ; i ++ ) <S2SV_EndBug> l += num_stmts ( CHILD ( n , i ) ) ; return l ; } default : { char buf [ 128 ] ; sprintf ( buf , \"Non-statement<S2SV_blank>found:<S2SV_blank>%d<S2SV_blank>%d\" , TYPE ( n ) , NCH ( n ) ) ; Py_FatalError ( buf ) ; } } Py_UNREACHABLE ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case suite : case func_body_suite : <S2SV_ModStart> ; else { i = 2 ; l = 0 ; if ( TYPE ( CHILD ( n , 1 ) ) == TYPE_COMMENT ) i += 2 <S2SV_ModEnd> ; for ( <S2SV_ModStart> ; for ( <S2SV_ModEnd> ; i <\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8636\n\n```\nCWE-190 int mem_check_range ( struct rxe_mem * mem , u64 iova , size_t length ) { switch ( mem -> type ) { case RXE_MEM_TYPE_DMA : return 0 ; case RXE_MEM_TYPE_MR : case RXE_MEM_TYPE_FMR : <S2SV_StartBug> return ( ( iova < mem -> iova ) || <S2SV_EndBug> <S2SV_StartBug> ( ( iova + length ) > ( mem -> iova + mem -> length ) ) ) ? <S2SV_EndBug> - EFAULT : 0 ; default : return - EFAULT ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case RXE_MEM_TYPE_FMR : if <S2SV_ModEnd> ( iova < <S2SV_ModStart> mem -> iova || length > mem -> length || iova > <S2SV_ModEnd> mem -> iova <S2SV_ModStart> mem -> length - length ) return - EFAULT ; return <S2SV_ModEnd> 0 ; default\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6194\n\n```\nCWE-119 static RList * relocs ( RBinFile * arch ) { struct r_bin_bflt_obj * obj = ( struct r_bin_bflt_obj * ) arch -> o -> bin_obj ; RList * list = r_list_newf ( ( RListFree ) free ) ; int i , len , n_got , amount ; if ( ! list || ! obj ) { r_list_free ( list ) ; return NULL ; } if ( obj -> hdr -> flags & FLAT_FLAG_GOTPIC ) { n_got = get_ngot_entries ( obj ) ; if ( n_got ) { amount = n_got * sizeof ( ut32 ) ; if ( amount < n_got || amount > UT32_MAX ) { goto out_error ; } <S2SV_StartBug> struct reloc_struct_t * got_table = calloc ( 1 , n_got * sizeof ( ut32 ) ) ; <S2SV_EndBug> if ( got_table ) { ut32 offset = 0 ; for ( i = 0 ; i < n_got ; offset += 4 , i ++ ) { ut32 got_entry ; if ( obj -> hdr -> data_start + offset + 4 > obj -> size || obj -> hdr -> data_start + offset + 4 < offset ) { break ; } len = r_buf_read_at ( obj -> b , obj -> hdr -> data_start + offset , ( ut8 * ) & got_entry , sizeof ( ut32 ) ) ; if ( ! VALID_GOT_ENTRY ( got_entry ) || len != sizeof ( ut32 ) ) { break ; } got_table [ i ] . addr_to_patch = got_entry ; got_table [ i ] . data_offset = got_entry + BFLT_HDR_SIZE ; } obj -> n_got = n_got ; obj -> got_table = got_table ; } } } if ( obj -> hdr -> reloc_count > 0 ) { int n_reloc = obj -> hdr -> reloc_count ; amount = n_reloc * sizeof ( struct reloc_struct_t ) ; if ( amount < n_reloc || amount > UT32_MAX ) { goto out_error ; } struct reloc_struct_t * reloc_table = calloc ( 1 , amount + 1 ) ; if ( ! reloc_table ) { goto out_error ; } amount = n_reloc * sizeof ( ut32 ) ; if ( amount < n_reloc || amount > UT32_MAX ) { free ( reloc_table ) ; goto out_error ; } ut32 * reloc_pointer_table = calloc ( 1 , amount + 1 ) ; if ( ! reloc_pointer_table ) { free ( reloc_table ) ; goto out_error ; } if ( obj -> hdr -> reloc_start + amount > obj -> size || obj -> hdr -> reloc_start + amount < amount ) { free ( reloc_table ) ; free ( reloc_pointer_table ) ; goto out_error ; } len = r_buf_read_at ( obj -> b , obj -> hdr -> reloc_start , ( ut8 * ) reloc_pointer_table , amount ) ; if ( len != amount ) { free ( reloc_table ) ; free ( reloc_pointer_table ) ; goto out_error ; } for ( i = 0 ; i < obj -> hdr -> reloc_count ; i ++ ) { ut32 reloc_offset = r_swap_ut32 ( reloc_pointer_table [ i ] ) + BFLT_HDR_SIZE ; if ( reloc_offset < obj -> hdr -> bss_end && reloc_offset < obj -> size ) { ut32 reloc_fixed , reloc_data_offset ; if ( reloc_offset + sizeof ( ut32 ) > obj -> size || reloc_offset + sizeof ( ut32 ) < reloc_offset ) { free ( reloc_table ) ; free ( reloc_pointer_table ) ; goto out_error ; } len = r_buf_read_at ( obj -> b , reloc_offset , ( ut8 * ) & reloc_fixed , sizeof ( ut32 ) ) ; if ( len != sizeof ( ut32 ) ) { eprintf ( \"problem<S2SV_blank>while<S2SV_blank>reading<S2SV_blank>relocation<S2SV_blank>entries\\\\n\" ) ; free ( reloc_table ) ; free ( reloc_pointer_table ) ; goto out_error ; } reloc_data_offset = r_swap_ut32 ( reloc_fixed ) + BFLT_HDR_SIZE ; reloc_table [ i ] . addr_to_patch = reloc_offset ; reloc_table [ i ] . data_offset = reloc_data_offset ; RBinReloc * reloc = R_NEW0 ( RBinReloc ) ; if ( reloc ) { reloc -> type = R_BIN_RELOC_32 ; reloc -> paddr = reloc_table [ i ] . addr_to_patch ; reloc -> vaddr = reloc -> paddr ; r_list_append ( list , reloc ) ; } } } free ( reloc_pointer_table ) ; obj -> reloc_table = reloc_table ; } return list ; out_error : r_list_free ( list ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * sizeof ( struct reloc_struct_t <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_loop_filter_rows ( const YV12_BUFFER_CONFIG * frame_buffer , <S2SV_EndBug> <S2SV_StartBug> VP9_COMMON * cm , MACROBLOCKD * xd , <S2SV_EndBug> int start , int stop , int y_only ) { const int num_planes = y_only ? 1 : MAX_MB_PLANE ; <S2SV_StartBug> int mi_row , mi_col ; <S2SV_EndBug> LOOP_FILTER_MASK lfm ; <S2SV_StartBug> int use_420 = y_only || ( xd -> plane [ 1 ] . subsampling_y == 1 && <S2SV_EndBug> <S2SV_StartBug> xd -> plane [ 1 ] . subsampling_x == 1 ) ; <S2SV_EndBug> for ( mi_row = start ; mi_row < stop ; mi_row += MI_BLOCK_SIZE ) { <S2SV_StartBug> MODE_INFO * * mi_8x8 = cm -> mi_grid_visible + mi_row * cm -> mi_stride ; <S2SV_EndBug> for ( mi_col = 0 ; mi_col < cm -> mi_cols ; mi_col += MI_BLOCK_SIZE ) { int plane ; <S2SV_StartBug> vp9_setup_dst_planes ( xd , frame_buffer , mi_row , mi_col ) ; <S2SV_EndBug> <S2SV_StartBug> if ( use_420 ) <S2SV_EndBug> <S2SV_StartBug> vp9_setup_mask ( cm , mi_row , mi_col , mi_8x8 + mi_col , cm -> mi_stride , <S2SV_EndBug> & lfm ) ; <S2SV_StartBug> for ( plane = 0 ; plane < num_planes ; ++ plane ) { <S2SV_EndBug> <S2SV_StartBug> if ( use_420 ) <S2SV_EndBug> vp9_filter_block_plane ( cm , & xd -> plane [ plane ] , mi_row , & lfm ) ; else filter_block_plane_non420 ( cm , & xd -> plane [ plane ] , mi_8x8 + mi_col , mi_row , mi_col ) ; <S2SV_StartBug> } <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_loop_filter_rows ( <S2SV_ModEnd> YV12_BUFFER_CONFIG * frame_buffer <S2SV_ModStart> * cm , struct macroblockd_plane planes [ MAX_MB_PLANE ] <S2SV_ModEnd> , int start <S2SV_ModStart> : MAX_MB_PLANE ; enum lf_path path <S2SV_ModEnd> ; LOOP_FILTER_MASK lfm <S2SV_ModStart> lfm ; int mi_row , mi_col ; if ( y_only ) path = LF_PATH_444 ; else if ( planes <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> == 1 && planes <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> == 1 ) path = LF_PATH_420 ; else if ( planes [ 1 ] . subsampling_y == 0 && planes [ 1 ] . subsampling_x == 0 ) path = LF_PATH_444 ; else path = LF_PATH_SLOW <S2SV_ModStart> MODE_INFO * * mi <S2SV_ModEnd> = cm -> <S2SV_ModStart> ; vp9_setup_dst_planes ( planes <S2SV_ModEnd> , frame_buffer , <S2SV_ModStart> mi_col ) ; <S2SV_ModEnd> vp9_setup_mask ( cm <S2SV_ModStart> , mi_col , mi <S2SV_ModEnd> + mi_col , <S2SV_ModStart> lfm ) ; vp9_filter_block_plane_ss00 ( cm , & planes [ 0 ] , mi_row , & lfm ) ; <S2SV_ModStart> ( plane = 1 <S2SV_ModEnd> ; plane < <S2SV_ModStart> plane ) { switch ( path ) { case LF_PATH_420 : vp9_filter_block_plane_ss11 ( cm , & planes [ plane ] , mi_row , & lfm ) ; break ; case LF_PATH_444 : vp9_filter_block_plane_ss00 ( cm , & planes [ plane ] , mi_row , & lfm ) ; break ; case LF_PATH_SLOW : vp9_filter_block_plane_non420 ( cm , & planes [ plane ] , mi <S2SV_ModEnd> + mi_col , <S2SV_ModStart> mi_col ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7273\n\n```\nCWE-000 static __u8 * cp_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { unsigned long quirks = ( unsigned long ) hid_get_drvdata ( hdev ) ; unsigned int i ; <S2SV_StartBug> if ( ! ( quirks & CP_RDESC_SWAPPED_MIN_MAX ) ) <S2SV_EndBug> return rdesc ; for ( i = 0 ; i < * rsize - 4 ; i ++ ) if ( rdesc [ i ] == 0x29 && rdesc [ i + 2 ] == 0x19 ) { rdesc [ i ] = 0x19 ; rdesc [ i + 2 ] = 0x29 ; swap ( rdesc [ i + 3 ] , rdesc [ i + 1 ] ) ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & CP_RDESC_SWAPPED_MIN_MAX ) ) return rdesc ; if ( * rsize < 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20145\n\n```\nCWE-732 int config__parse_args ( struct mosquitto_db * db , struct mosquitto__config * config , int argc , char * argv [ ] ) { int i ; int port_tmp ; for ( i = 1 ; i < argc ; i ++ ) { if ( ! strcmp ( argv [ i ] , \"-c\" ) || ! strcmp ( argv [ i ] , \"--config-file\" ) ) { if ( i < argc - 1 ) { db -> config_file = argv [ i + 1 ] ; if ( config__read ( db , config , false ) ) { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>configuration<S2SV_blank>file.\" ) ; return MOSQ_ERR_INVAL ; } } else { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>-c<S2SV_blank>argument<S2SV_blank>given,<S2SV_blank>but<S2SV_blank>no<S2SV_blank>config<S2SV_blank>file<S2SV_blank>specified.\" ) ; return MOSQ_ERR_INVAL ; } i ++ ; } else if ( ! strcmp ( argv [ i ] , \"-d\" ) || ! strcmp ( argv [ i ] , \"--daemon\" ) ) { config -> daemon = true ; } else if ( ! strcmp ( argv [ i ] , \"-h\" ) || ! strcmp ( argv [ i ] , \"--help\" ) ) { print_usage ( ) ; return MOSQ_ERR_INVAL ; } else if ( ! strcmp ( argv [ i ] , \"-p\" ) || ! strcmp ( argv [ i ] , \"--port\" ) ) { if ( i < argc - 1 ) { port_tmp = atoi ( argv [ i + 1 ] ) ; if ( port_tmp < 1 || port_tmp > 65535 ) { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>Invalid<S2SV_blank>port<S2SV_blank>specified<S2SV_blank>(%d).\" , port_tmp ) ; return MOSQ_ERR_INVAL ; } else { if ( config -> default_listener . port ) { log__printf ( NULL , MOSQ_LOG_WARNING , \"Warning:<S2SV_blank>Default<S2SV_blank>listener<S2SV_blank>port<S2SV_blank>specified<S2SV_blank>multiple<S2SV_blank>times.<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>latest<S2SV_blank>will<S2SV_blank>be<S2SV_blank>used.\" ) ; } config -> default_listener . port = port_tmp ; } } else { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>-p<S2SV_blank>argument<S2SV_blank>given,<S2SV_blank>but<S2SV_blank>no<S2SV_blank>port<S2SV_blank>specified.\" ) ; return MOSQ_ERR_INVAL ; } i ++ ; } else if ( ! strcmp ( argv [ i ] , \"-v\" ) || ! strcmp ( argv [ i ] , \"--verbose\" ) ) { db -> verbose = true ; } else { fprintf ( stderr , \"Error:<S2SV_blank>Unknown<S2SV_blank>option<S2SV_blank>\\'%s\\'.\\\\n\" , argv [ i ] ) ; print_usage ( ) ; return MOSQ_ERR_INVAL ; } } if ( config -> listener_count == 0 # ifdef WITH_TLS || config -> default_listener . cafile || config -> default_listener . capath || config -> default_listener . certfile || config -> default_listener . keyfile || config -> default_listener . ciphers || config -> default_listener . psk_hint || config -> default_listener . require_certificate || config -> default_listener . crlfile || config -> default_listener . use_identity_as_username || config -> default_listener . use_subject_as_username # endif || config -> default_listener . use_username_as_clientid || config -> default_listener . host || config -> default_listener . port || config -> default_listener . max_connections != - 1 || config -> default_listener . mount_point || config -> default_listener . protocol != mp_mqtt || config -> default_listener . socket_domain || config -> default_listener . security_options . password_file || config -> default_listener . security_options . psk_file || config -> default_listener . security_options . auth_plugin_config_count || config -> default_listener . security_options . allow_anonymous != - 1 ) { config -> listener_count ++ ; config -> listeners = mosquitto__realloc ( config -> listeners , sizeof ( struct mosquitto__listener ) * config -> listener_count ) ; if ( ! config -> listeners ) { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>Out<S2SV_blank>of<S2SV_blank>memory.\" ) ; return MOSQ_ERR_NOMEM ; } memset ( & config -> listeners [ config -> listener_count - 1 ] , 0 , sizeof ( struct mosquitto__listener ) ) ; if ( config -> default_listener . port ) { config -> listeners [ config -> listener_count - 1 ] . port = config -> default_listener . port ; } else { config -> listeners [ config -> listener_count - 1 ] . port = 1883 ; } if ( config -> default_listener . host ) { config -> listeners [ config -> listener_count - 1 ] . host = config -> default_listener . host ; } else { config -> listeners [ config -> listener_count - 1 ] . host = NULL ; } if ( config -> default_listener . mount_point ) { config -> listeners [ config -> listener_count - 1 ] . mount_point = config -> default_listener . mount_point ; } else { config -> listeners [ config -> listener_count - 1 ] . mount_point = NULL ; } config -> listeners [ config -> listener_count - 1 ] . max_connections = config -> default_listener . max_connections ; config -> listeners [ config -> listener_count - 1 ] . protocol = config -> default_listener . protocol ; config -> listeners [ config -> listener_count - 1 ] . socket_domain = config -> default_listener . socket_domain ; config -> listeners [ config -> listener_count - 1 ] . client_count = 0 ; config -> listeners [ config -> listener_count - 1 ] . socks = NULL ; config -> listeners [ config -> listener_count - 1 ] . sock_count = 0 ; config -> listeners [ config -> listener_count - 1 ] . client_count = 0 ; config -> listeners [ config -> listener_count - 1 ] . use_username_as_clientid = config -> default_listener . use_username_as_clientid ; # ifdef WITH_TLS config -> listeners [ config -> listener_count - 1 ] . tls_version = config -> default_listener . tls_version ; config -> listeners [ config -> listener_count - 1 ] . cafile = config -> default_listener . cafile ; config -> listeners [ config -> listener_count - 1 ] . capath = config -> default_listener . capath ; config -> listeners [ config -> listener_count - 1 ] . certfile = config -> default_listener . certfile ; config -> listeners [ config -> listener_count - 1 ] . keyfile = config -> default_listener . keyfile ; config -> listeners [ config -> listener_count - 1 ] . ciphers = config -> default_listener . ciphers ; config -> listeners [ config -> listener_count - 1 ] . psk_hint = config -> default_listener . psk_hint ; config -> listeners [ config -> listener_count - 1 ] . require_certificate = config -> default_listener . require_certificate ; config -> listeners [ config -> listener_count - 1 ] . ssl_ctx = NULL ; config -> listeners [ config -> listener_count - 1 ] . crlfile = config -> default_listener . crlfile ; config -> listeners [ config -> listener_count - 1 ] . use_identity_as_username = config -> default_listener . use_identity_as_username ; config -> listeners [ config -> listener_count - 1 ] . use_subject_as_username = config -> default_listener . use_subject_as_username ; # endif <S2SV_StartBug> config -> listeners [ config -> listener_count - 1 ] . security_options . password_file = config -> default_listener . security_options . password_file ; <S2SV_EndBug> config -> listeners [ config -> listener_count - 1 ] . security_options . psk_file = config -> default_listener . security_options . psk_file ; config -> listeners [ config -> listener_count - 1 ] . security_options . auth_plugin_configs = config -> default_listener . security_options . auth_plugin_configs ; config -> listeners [ config -> listener_count - 1 ] . security_options . auth_plugin_config_count = config -> default_listener . security_options . auth_plugin_config_count ; config -> listeners [ config -> listener_count - 1 ] . security_options . allow_anonymous = config -> default_listener . security_options . allow_anonymous ; } if ( ! config -> user ) { config -> user = \"mosquitto\" ; } if ( db -> verbose ) { config -> log_type = INT_MAX ; } return config__check ( config ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . security_options . acl_file = config -> default_listener . security_options . acl_file ; config -> listeners [ config -> listener_count - 1 ] . security_options .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10208\n\n```\nCWE-125 static int ext4_fill_super ( struct super_block * sb , void * data , int silent ) { char * orig_data = kstrdup ( data , GFP_KERNEL ) ; struct buffer_head * bh ; struct ext4_super_block * es = NULL ; struct ext4_sb_info * sbi = kzalloc ( sizeof ( * sbi ) , GFP_KERNEL ) ; ext4_fsblk_t block ; ext4_fsblk_t sb_block = get_sb_block ( & data ) ; ext4_fsblk_t logical_sb_block ; unsigned long offset = 0 ; unsigned long journal_devnum = 0 ; unsigned long def_mount_opts ; struct inode * root ; const char * descr ; int ret = - ENOMEM ; int blocksize , clustersize ; unsigned int db_count ; unsigned int i ; int needs_recovery , has_huge_files , has_bigalloc ; __u64 blocks_count ; int err = 0 ; unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO ; ext4_group_t first_not_zeroed ; if ( ( data && ! orig_data ) || ! sbi ) goto out_free_base ; sbi -> s_blockgroup_lock = kzalloc ( sizeof ( struct blockgroup_lock ) , GFP_KERNEL ) ; if ( ! sbi -> s_blockgroup_lock ) goto out_free_base ; sb -> s_fs_info = sbi ; sbi -> s_sb = sb ; sbi -> s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS ; sbi -> s_sb_block = sb_block ; if ( sb -> s_bdev -> bd_part ) sbi -> s_sectors_written_start = part_stat_read ( sb -> s_bdev -> bd_part , sectors [ 1 ] ) ; strreplace ( sb -> s_id , '/' , '!' ) ; ret = - EINVAL ; blocksize = sb_min_blocksize ( sb , EXT4_MIN_BLOCK_SIZE ) ; if ( ! blocksize ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>blocksize\" ) ; goto out_fail ; } if ( blocksize != EXT4_MIN_BLOCK_SIZE ) { logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE ; offset = do_div ( logical_sb_block , blocksize ) ; } else { logical_sb_block = sb_block ; } if ( ! ( bh = sb_bread_unmovable ( sb , logical_sb_block ) ) ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>superblock\" ) ; goto out_fail ; } es = ( struct ext4_super_block * ) ( bh -> b_data + offset ) ; sbi -> s_es = es ; sb -> s_magic = le16_to_cpu ( es -> s_magic ) ; if ( sb -> s_magic != EXT4_SUPER_MAGIC ) goto cantfind_ext4 ; sbi -> s_kbytes_written = le64_to_cpu ( es -> s_kbytes_written ) ; if ( ext4_has_feature_metadata_csum ( sb ) && ext4_has_feature_gdt_csum ( sb ) ) ext4_warning ( sb , \"metadata_csum<S2SV_blank>and<S2SV_blank>uninit_bg<S2SV_blank>are<S2SV_blank>\" \"redundant<S2SV_blank>flags;<S2SV_blank>please<S2SV_blank>run<S2SV_blank>fsck.\" ) ; if ( ! ext4_verify_csum_type ( sb , es ) ) { ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Found<S2SV_blank>ext4<S2SV_blank>filesystem<S2SV_blank>with<S2SV_blank>\" \"unknown<S2SV_blank>checksum<S2SV_blank>algorithm.\" ) ; silent = 1 ; goto cantfind_ext4 ; } if ( ext4_has_feature_metadata_csum ( sb ) ) { sbi -> s_chksum_driver = crypto_alloc_shash ( \"crc32c\" , 0 , 0 ) ; if ( IS_ERR ( sbi -> s_chksum_driver ) ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>load<S2SV_blank>crc32c<S2SV_blank>driver.\" ) ; ret = PTR_ERR ( sbi -> s_chksum_driver ) ; sbi -> s_chksum_driver = NULL ; goto failed_mount ; } } if ( ! ext4_superblock_csum_verify ( sb , es ) ) { ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Found<S2SV_blank>ext4<S2SV_blank>filesystem<S2SV_blank>with<S2SV_blank>\" \"invalid<S2SV_blank>superblock<S2SV_blank>checksum.<S2SV_blank><S2SV_blank>Run<S2SV_blank>e2fsck?\" ) ; silent = 1 ; ret = - EFSBADCRC ; goto cantfind_ext4 ; } if ( ext4_has_feature_csum_seed ( sb ) ) sbi -> s_csum_seed = le32_to_cpu ( es -> s_checksum_seed ) ; else if ( ext4_has_metadata_csum ( sb ) ) sbi -> s_csum_seed = ext4_chksum ( sbi , ~ 0 , es -> s_uuid , sizeof ( es -> s_uuid ) ) ; def_mount_opts = le32_to_cpu ( es -> s_default_mount_opts ) ; set_opt ( sb , INIT_INODE_TABLE ) ; if ( def_mount_opts & EXT4_DEFM_DEBUG ) set_opt ( sb , DEBUG ) ; if ( def_mount_opts & EXT4_DEFM_BSDGROUPS ) set_opt ( sb , GRPID ) ; if ( def_mount_opts & EXT4_DEFM_UID16 ) set_opt ( sb , NO_UID32 ) ; set_opt ( sb , XATTR_USER ) ; # ifdef CONFIG_EXT4_FS_POSIX_ACL set_opt ( sb , POSIX_ACL ) ; # endif if ( ext4_has_metadata_csum ( sb ) ) set_opt ( sb , JOURNAL_CHECKSUM ) ; if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_DATA ) set_opt ( sb , JOURNAL_DATA ) ; else if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_ORDERED ) set_opt ( sb , ORDERED_DATA ) ; else if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_WBACK ) set_opt ( sb , WRITEBACK_DATA ) ; if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT4_ERRORS_PANIC ) set_opt ( sb , ERRORS_PANIC ) ; else if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT4_ERRORS_CONTINUE ) set_opt ( sb , ERRORS_CONT ) ; else set_opt ( sb , ERRORS_RO ) ; set_opt ( sb , BLOCK_VALIDITY ) ; if ( def_mount_opts & EXT4_DEFM_DISCARD ) set_opt ( sb , DISCARD ) ; sbi -> s_resuid = make_kuid ( & init_user_ns , le16_to_cpu ( es -> s_def_resuid ) ) ; sbi -> s_resgid = make_kgid ( & init_user_ns , le16_to_cpu ( es -> s_def_resgid ) ) ; sbi -> s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ; sbi -> s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME ; sbi -> s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME ; if ( ( def_mount_opts & EXT4_DEFM_NOBARRIER ) == 0 ) set_opt ( sb , BARRIER ) ; if ( ! IS_EXT3_SB ( sb ) && ! IS_EXT2_SB ( sb ) && ( ( def_mount_opts & EXT4_DEFM_NODELALLOC ) == 0 ) ) set_opt ( sb , DELALLOC ) ; sbi -> s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT ; if ( sbi -> s_es -> s_mount_opts [ 0 ] ) { char * s_mount_opts = kstrndup ( sbi -> s_es -> s_mount_opts , sizeof ( sbi -> s_es -> s_mount_opts ) , GFP_KERNEL ) ; if ( ! s_mount_opts ) goto failed_mount ; if ( ! parse_options ( s_mount_opts , sb , & journal_devnum , & journal_ioprio , 0 ) ) { ext4_msg ( sb , KERN_WARNING , \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>options<S2SV_blank>in<S2SV_blank>superblock:<S2SV_blank>%s\" , s_mount_opts ) ; } kfree ( s_mount_opts ) ; } sbi -> s_def_mount_opt = sbi -> s_mount_opt ; if ( ! parse_options ( ( char * ) data , sb , & journal_devnum , & journal_ioprio , 0 ) ) goto failed_mount ; if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) { printk_once ( KERN_WARNING \"EXT4-fs:<S2SV_blank>Warning:<S2SV_blank>mounting<S2SV_blank>\" \"with<S2SV_blank>data=journal<S2SV_blank>disables<S2SV_blank>delayed<S2SV_blank>\" \"allocation<S2SV_blank>and<S2SV_blank>O_DIRECT<S2SV_blank>support!\\\\n\" ) ; if ( test_opt2 ( sb , EXPLICIT_DELALLOC ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>delalloc\" ) ; goto failed_mount ; } if ( test_opt ( sb , DIOREAD_NOLOCK ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>dioread_nolock\" ) ; goto failed_mount ; } if ( test_opt ( sb , DAX ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>dax\" ) ; goto failed_mount ; } if ( test_opt ( sb , DELALLOC ) ) clear_opt ( sb , DELALLOC ) ; } else { sb -> s_iflags |= SB_I_CGROUPWB ; } sb -> s_flags = ( sb -> s_flags & ~ MS_POSIXACL ) | ( test_opt ( sb , POSIX_ACL ) ? MS_POSIXACL : 0 ) ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT4_GOOD_OLD_REV && ( ext4_has_compat_features ( sb ) || ext4_has_ro_compat_features ( sb ) || ext4_has_incompat_features ( sb ) ) ) ext4_msg ( sb , KERN_WARNING , \"feature<S2SV_blank>flags<S2SV_blank>set<S2SV_blank>on<S2SV_blank>rev<S2SV_blank>0<S2SV_blank>fs,<S2SV_blank>\" \"running<S2SV_blank>e2fsck<S2SV_blank>is<S2SV_blank>recommended\" ) ; if ( es -> s_creator_os == cpu_to_le32 ( EXT4_OS_HURD ) ) { set_opt2 ( sb , HURD_COMPAT ) ; if ( ext4_has_feature_64bit ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"The<S2SV_blank>Hurd<S2SV_blank>can\\'t<S2SV_blank>support<S2SV_blank>64-bit<S2SV_blank>file<S2SV_blank>systems\" ) ; goto failed_mount ; } } if ( IS_EXT2_SB ( sb ) ) { if ( ext2_feature_set_ok ( sb ) ) ext4_msg ( sb , KERN_INFO , \"mounting<S2SV_blank>ext2<S2SV_blank>file<S2SV_blank>system<S2SV_blank>\" \"using<S2SV_blank>the<S2SV_blank>ext4<S2SV_blank>subsystem\" ) ; else { ext4_msg ( sb , KERN_ERR , \"couldn\\'t<S2SV_blank>mount<S2SV_blank>as<S2SV_blank>ext2<S2SV_blank>due<S2SV_blank>\" \"to<S2SV_blank>feature<S2SV_blank>incompatibilities\" ) ; goto failed_mount ; } } if ( IS_EXT3_SB ( sb ) ) { if ( ext3_feature_set_ok ( sb ) ) ext4_msg ( sb , KERN_INFO , \"mounting<S2SV_blank>ext3<S2SV_blank>file<S2SV_blank>system<S2SV_blank>\" \"using<S2SV_blank>the<S2SV_blank>ext4<S2SV_blank>subsystem\" ) ; else { ext4_msg ( sb , KERN_ERR , \"couldn\\'t<S2SV_blank>mount<S2SV_blank>as<S2SV_blank>ext3<S2SV_blank>due<S2SV_blank>\" \"to<S2SV_blank>feature<S2SV_blank>incompatibilities\" ) ; goto failed_mount ; } } if ( ! ext4_feature_set_ok ( sb , ( sb -> s_flags & MS_RDONLY ) ) ) goto failed_mount ; blocksize = BLOCK_SIZE << le32_to_cpu ( es -> s_log_block_size ) ; if ( blocksize < EXT4_MIN_BLOCK_SIZE || blocksize > EXT4_MAX_BLOCK_SIZE ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>filesystem<S2SV_blank>blocksize<S2SV_blank>%d<S2SV_blank>(%d<S2SV_blank>log_block_size)\" , blocksize , le32_to_cpu ( es -> s_log_block_size ) ) ; goto failed_mount ; } if ( le32_to_cpu ( es -> s_log_block_size ) > ( EXT4_MAX_BLOCK_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE ) ) { ext4_msg ( sb , KERN_ERR , \"Invalid<S2SV_blank>log<S2SV_blank>block<S2SV_blank>size:<S2SV_blank>%u\" , le32_to_cpu ( es -> s_log_block_size ) ) ; goto failed_mount ; } if ( le16_to_cpu ( sbi -> s_es -> s_reserved_gdt_blocks ) > ( blocksize / 4 ) ) { ext4_msg ( sb , KERN_ERR , \"Number<S2SV_blank>of<S2SV_blank>reserved<S2SV_blank>GDT<S2SV_blank>blocks<S2SV_blank>insanely<S2SV_blank>large:<S2SV_blank>%d\" , le16_to_cpu ( sbi -> s_es -> s_reserved_gdt_blocks ) ) ; goto failed_mount ; } if ( sbi -> s_mount_opt & EXT4_MOUNT_DAX ) { err = bdev_dax_supported ( sb , blocksize ) ; if ( err ) goto failed_mount ; } if ( ext4_has_feature_encrypt ( sb ) && es -> s_encryption_level ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>encryption<S2SV_blank>level<S2SV_blank>%d\" , es -> s_encryption_level ) ; goto failed_mount ; } if ( sb -> s_blocksize != blocksize ) { if ( ! sb_set_blocksize ( sb , blocksize ) ) { ext4_msg ( sb , KERN_ERR , \"bad<S2SV_blank>block<S2SV_blank>size<S2SV_blank>%d\" , blocksize ) ; goto failed_mount ; } brelse ( bh ) ; logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE ; offset = do_div ( logical_sb_block , blocksize ) ; bh = sb_bread_unmovable ( sb , logical_sb_block ) ; if ( ! bh ) { ext4_msg ( sb , KERN_ERR , \"Can\\'t<S2SV_blank>read<S2SV_blank>superblock<S2SV_blank>on<S2SV_blank>2nd<S2SV_blank>try\" ) ; goto failed_mount ; } es = ( struct ext4_super_block * ) ( bh -> b_data + offset ) ; sbi -> s_es = es ; if ( es -> s_magic != cpu_to_le16 ( EXT4_SUPER_MAGIC ) ) { ext4_msg ( sb , KERN_ERR , \"Magic<S2SV_blank>mismatch,<S2SV_blank>very<S2SV_blank>weird!\" ) ; goto failed_mount ; } } has_huge_files = ext4_has_feature_huge_file ( sb ) ; sbi -> s_bitmap_maxbytes = ext4_max_bitmap_size ( sb -> s_blocksize_bits , has_huge_files ) ; sb -> s_maxbytes = ext4_max_size ( sb -> s_blocksize_bits , has_huge_files ) ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT4_GOOD_OLD_REV ) { sbi -> s_inode_size = EXT4_GOOD_OLD_INODE_SIZE ; sbi -> s_first_ino = EXT4_GOOD_OLD_FIRST_INO ; } else { sbi -> s_inode_size = le16_to_cpu ( es -> s_inode_size ) ; sbi -> s_first_ino = le32_to_cpu ( es -> s_first_ino ) ; if ( ( sbi -> s_inode_size < EXT4_GOOD_OLD_INODE_SIZE ) || ( ! is_power_of_2 ( sbi -> s_inode_size ) ) || ( sbi -> s_inode_size > blocksize ) ) { ext4_msg ( sb , KERN_ERR , \"unsupported<S2SV_blank>inode<S2SV_blank>size:<S2SV_blank>%d\" , sbi -> s_inode_size ) ; goto failed_mount ; } if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE ) sb -> s_time_gran = 1 << ( EXT4_EPOCH_BITS - 2 ) ; } sbi -> s_desc_size = le16_to_cpu ( es -> s_desc_size ) ; if ( ext4_has_feature_64bit ( sb ) ) { if ( sbi -> s_desc_size < EXT4_MIN_DESC_SIZE_64BIT || sbi -> s_desc_size > EXT4_MAX_DESC_SIZE || ! is_power_of_2 ( sbi -> s_desc_size ) ) { ext4_msg ( sb , KERN_ERR , \"unsupported<S2SV_blank>descriptor<S2SV_blank>size<S2SV_blank>%lu\" , sbi -> s_desc_size ) ; goto failed_mount ; } } else sbi -> s_desc_size = EXT4_MIN_DESC_SIZE ; sbi -> s_blocks_per_group = le32_to_cpu ( es -> s_blocks_per_group ) ; sbi -> s_inodes_per_group = le32_to_cpu ( es -> s_inodes_per_group ) ; sbi -> s_inodes_per_block = blocksize / EXT4_INODE_SIZE ( sb ) ; if ( sbi -> s_inodes_per_block == 0 ) goto cantfind_ext4 ; if ( sbi -> s_inodes_per_group < sbi -> s_inodes_per_block || sbi -> s_inodes_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"invalid<S2SV_blank>inodes<S2SV_blank>per<S2SV_blank>group:<S2SV_blank>%lu\\\\n\" , sbi -> s_blocks_per_group ) ; goto failed_mount ; } sbi -> s_itb_per_group = sbi -> s_inodes_per_group / sbi -> s_inodes_per_block ; sbi -> s_desc_per_block = blocksize / EXT4_DESC_SIZE ( sb ) ; sbi -> s_sbh = bh ; sbi -> s_mount_state = le16_to_cpu ( es -> s_state ) ; sbi -> s_addr_per_block_bits = ilog2 ( EXT4_ADDR_PER_BLOCK ( sb ) ) ; sbi -> s_desc_per_block_bits = ilog2 ( EXT4_DESC_PER_BLOCK ( sb ) ) ; for ( i = 0 ; i < 4 ; i ++ ) sbi -> s_hash_seed [ i ] = le32_to_cpu ( es -> s_hash_seed [ i ] ) ; sbi -> s_def_hash_version = es -> s_def_hash_version ; if ( ext4_has_feature_dir_index ( sb ) ) { i = le32_to_cpu ( es -> s_flags ) ; if ( i & EXT2_FLAGS_UNSIGNED_HASH ) sbi -> s_hash_unsigned = 3 ; else if ( ( i & EXT2_FLAGS_SIGNED_HASH ) == 0 ) { # ifdef __CHAR_UNSIGNED__ if ( ! ( sb -> s_flags & MS_RDONLY ) ) es -> s_flags |= cpu_to_le32 ( EXT2_FLAGS_UNSIGNED_HASH ) ; sbi -> s_hash_unsigned = 3 ; # else if ( ! ( sb -> s_flags & MS_RDONLY ) ) es -> s_flags |= cpu_to_le32 ( EXT2_FLAGS_SIGNED_HASH ) ; # endif } } clustersize = BLOCK_SIZE << le32_to_cpu ( es -> s_log_cluster_size ) ; has_bigalloc = ext4_has_feature_bigalloc ( sb ) ; if ( has_bigalloc ) { if ( clustersize < blocksize ) { ext4_msg ( sb , KERN_ERR , \"cluster<S2SV_blank>size<S2SV_blank>(%d)<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>\" \"block<S2SV_blank>size<S2SV_blank>(%d)\" , clustersize , blocksize ) ; goto failed_mount ; } if ( le32_to_cpu ( es -> s_log_cluster_size ) > ( EXT4_MAX_CLUSTER_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE ) ) { ext4_msg ( sb , KERN_ERR , \"Invalid<S2SV_blank>log<S2SV_blank>cluster<S2SV_blank>size:<S2SV_blank>%u\" , le32_to_cpu ( es -> s_log_cluster_size ) ) ; goto failed_mount ; } sbi -> s_cluster_bits = le32_to_cpu ( es -> s_log_cluster_size ) - le32_to_cpu ( es -> s_log_block_size ) ; sbi -> s_clusters_per_group = le32_to_cpu ( es -> s_clusters_per_group ) ; if ( sbi -> s_clusters_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#clusters<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_clusters_per_group ) ; goto failed_mount ; } if ( sbi -> s_blocks_per_group != ( sbi -> s_clusters_per_group * ( clustersize / blocksize ) ) ) { ext4_msg ( sb , KERN_ERR , \"blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>(%lu)<S2SV_blank>and<S2SV_blank>\" \"clusters<S2SV_blank>per<S2SV_blank>group<S2SV_blank>(%lu)<S2SV_blank>inconsistent\" , sbi -> s_blocks_per_group , sbi -> s_clusters_per_group ) ; goto failed_mount ; } } else { if ( clustersize != blocksize ) { ext4_warning ( sb , \"fragment/cluster<S2SV_blank>size<S2SV_blank>(%d)<S2SV_blank>!=<S2SV_blank>\" \"block<S2SV_blank>size<S2SV_blank>(%d)\" , clustersize , blocksize ) ; clustersize = blocksize ; } if ( sbi -> s_blocks_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_blocks_per_group ) ; goto failed_mount ; } sbi -> s_clusters_per_group = sbi -> s_blocks_per_group ; sbi -> s_cluster_bits = 0 ; } sbi -> s_cluster_ratio = clustersize / blocksize ; if ( sbi -> s_blocks_per_group == clustersize << 3 ) set_opt2 ( sb , STD_GROUP_SIZE ) ; err = generic_check_addressable ( sb -> s_blocksize_bits , ext4_blocks_count ( es ) ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"filesystem\" \"<S2SV_blank>too<S2SV_blank>large<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>safely<S2SV_blank>on<S2SV_blank>this<S2SV_blank>system\" ) ; if ( sizeof ( sector_t ) < 8 ) ext4_msg ( sb , KERN_WARNING , \"CONFIG_LBDAF<S2SV_blank>not<S2SV_blank>enabled\" ) ; goto failed_mount ; } if ( EXT4_BLOCKS_PER_GROUP ( sb ) == 0 ) goto cantfind_ext4 ; blocks_count = sb -> s_bdev -> bd_inode -> i_size >> sb -> s_blocksize_bits ; if ( blocks_count && ext4_blocks_count ( es ) > blocks_count ) { ext4_msg ( sb , KERN_WARNING , \"bad<S2SV_blank>geometry:<S2SV_blank>block<S2SV_blank>count<S2SV_blank>%llu<S2SV_blank>\" \"exceeds<S2SV_blank>size<S2SV_blank>of<S2SV_blank>device<S2SV_blank>(%llu<S2SV_blank>blocks)\" , ext4_blocks_count ( es ) , blocks_count ) ; goto failed_mount ; } if ( le32_to_cpu ( es -> s_first_data_block ) >= ext4_blocks_count ( es ) ) { ext4_msg ( sb , KERN_WARNING , \"bad<S2SV_blank>geometry:<S2SV_blank>first<S2SV_blank>data<S2SV_blank>\" \"block<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>beyond<S2SV_blank>end<S2SV_blank>of<S2SV_blank>filesystem<S2SV_blank>(%llu)\" , le32_to_cpu ( es -> s_first_data_block ) , ext4_blocks_count ( es ) ) ; goto failed_mount ; } blocks_count = ( ext4_blocks_count ( es ) - le32_to_cpu ( es -> s_first_data_block ) + EXT4_BLOCKS_PER_GROUP ( sb ) - 1 ) ; do_div ( blocks_count , EXT4_BLOCKS_PER_GROUP ( sb ) ) ; if ( blocks_count > ( ( uint64_t ) 1 << 32 ) - EXT4_DESC_PER_BLOCK ( sb ) ) { ext4_msg ( sb , KERN_WARNING , \"groups<S2SV_blank>count<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%u<S2SV_blank>\" \"(block<S2SV_blank>count<S2SV_blank>%llu,<S2SV_blank>first<S2SV_blank>data<S2SV_blank>block<S2SV_blank>%u,<S2SV_blank>\" \"blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>%lu)\" , sbi -> s_groups_count , ext4_blocks_count ( es ) , le32_to_cpu ( es -> s_first_data_block ) , EXT4_BLOCKS_PER_GROUP ( sb ) ) ; goto failed_mount ; } sbi -> s_groups_count = blocks_count ; sbi -> s_blockfile_groups = min_t ( ext4_group_t , sbi -> s_groups_count , ( EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP ( sb ) ) ) ; db_count = ( sbi -> s_groups_count + EXT4_DESC_PER_BLOCK ( sb ) - 1 ) / <S2SV_StartBug> EXT4_DESC_PER_BLOCK ( sb ) ; <S2SV_EndBug> sbi -> s_group_desc = ext4_kvmalloc ( db_count * sizeof ( struct buffer_head * ) , GFP_KERNEL ) ; if ( sbi -> s_group_desc == NULL ) { ext4_msg ( sb , KERN_ERR , \"not<S2SV_blank>enough<S2SV_blank>memory\" ) ; ret = - ENOMEM ; goto failed_mount ; } bgl_lock_init ( sbi -> s_blockgroup_lock ) ; for ( i = 0 ; i < db_count ; i ++ ) { block = descriptor_loc ( sb , logical_sb_block , i ) ; sbi -> s_group_desc [ i ] = sb_bread_unmovable ( sb , block ) ; if ( ! sbi -> s_group_desc [ i ] ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>read<S2SV_blank>group<S2SV_blank>descriptor<S2SV_blank>%d\" , i ) ; db_count = i ; goto failed_mount2 ; } } if ( ! ext4_check_descriptors ( sb , logical_sb_block , & first_not_zeroed ) ) { ext4_msg ( sb , KERN_ERR , \"group<S2SV_blank>descriptors<S2SV_blank>corrupted!\" ) ; ret = - EFSCORRUPTED ; goto failed_mount2 ; } sbi -> s_gdb_count = db_count ; get_random_bytes ( & sbi -> s_next_generation , sizeof ( u32 ) ) ; spin_lock_init ( & sbi -> s_next_gen_lock ) ; setup_timer ( & sbi -> s_err_report , print_daily_error_info , ( unsigned long ) sb ) ; if ( ext4_es_register_shrinker ( sbi ) ) goto failed_mount3 ; sbi -> s_stripe = ext4_get_stripe_size ( sbi ) ; sbi -> s_extent_max_zeroout_kb = 32 ; sb -> s_op = & ext4_sops ; sb -> s_export_op = & ext4_export_ops ; sb -> s_xattr = ext4_xattr_handlers ; sb -> s_cop = & ext4_cryptops ; # ifdef CONFIG_QUOTA sb -> dq_op = & ext4_quota_operations ; if ( ext4_has_feature_quota ( sb ) ) sb -> s_qcop = & dquot_quotactl_sysfile_ops ; else sb -> s_qcop = & ext4_qctl_operations ; sb -> s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ ; # endif memcpy ( sb -> s_uuid , es -> s_uuid , sizeof ( es -> s_uuid ) ) ; INIT_LIST_HEAD ( & sbi -> s_orphan ) ; mutex_init ( & sbi -> s_orphan_lock ) ; sb -> s_root = NULL ; needs_recovery = ( es -> s_last_orphan != 0 || ext4_has_feature_journal_needs_recovery ( sb ) ) ; if ( ext4_has_feature_mmp ( sb ) && ! ( sb -> s_flags & MS_RDONLY ) ) if ( ext4_multi_mount_protect ( sb , le64_to_cpu ( es -> s_mmp_block ) ) ) goto failed_mount3a ; if ( ! test_opt ( sb , NOLOAD ) && ext4_has_feature_journal ( sb ) ) { if ( ext4_load_journal ( sb , es , journal_devnum ) ) goto failed_mount3a ; } else if ( test_opt ( sb , NOLOAD ) && ! ( sb -> s_flags & MS_RDONLY ) && ext4_has_feature_journal_needs_recovery ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"required<S2SV_blank>journal<S2SV_blank>recovery<S2SV_blank>\" \"suppressed<S2SV_blank>and<S2SV_blank>not<S2SV_blank>mounted<S2SV_blank>read-only\" ) ; goto failed_mount_wq ; } else { if ( test_opt2 ( sb , EXPLICIT_JOURNAL_CHECKSUM ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"journal_checksum,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } if ( test_opt ( sb , JOURNAL_ASYNC_COMMIT ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"journal_async_commit,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } if ( sbi -> s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"commit=%lu,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" , sbi -> s_commit_interval / HZ ) ; goto failed_mount_wq ; } if ( EXT4_MOUNT_DATA_FLAGS & ( sbi -> s_mount_opt ^ sbi -> s_def_mount_opt ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"data=,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } sbi -> s_def_mount_opt &= EXT4_MOUNT_JOURNAL_CHECKSUM ; clear_opt ( sb , JOURNAL_CHECKSUM ) ; clear_opt ( sb , DATA_FLAGS ) ; sbi -> s_journal = NULL ; needs_recovery = 0 ; goto no_journal ; } if ( ext4_has_feature_64bit ( sb ) && ! jbd2_journal_set_features ( EXT4_SB ( sb ) -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_64BIT ) ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>64-bit<S2SV_blank>journal<S2SV_blank>feature\" ) ; goto failed_mount_wq ; } if ( ! set_journal_csum_feature_set ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>journal<S2SV_blank>checksum<S2SV_blank>\" \"feature<S2SV_blank>set\" ) ; goto failed_mount_wq ; } switch ( test_opt ( sb , DATA_FLAGS ) ) { case 0 : if ( jbd2_journal_check_available_features ( sbi -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_REVOKE ) ) set_opt ( sb , ORDERED_DATA ) ; else set_opt ( sb , JOURNAL_DATA ) ; break ; case EXT4_MOUNT_ORDERED_DATA : case EXT4_MOUNT_WRITEBACK_DATA : if ( ! jbd2_journal_check_available_features ( sbi -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_REVOKE ) ) { ext4_msg ( sb , KERN_ERR , \"Journal<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>\" \"requested<S2SV_blank>data<S2SV_blank>journaling<S2SV_blank>mode\" ) ; goto failed_mount_wq ; } default : break ; } set_task_ioprio ( sbi -> s_journal -> j_task , journal_ioprio ) ; sbi -> s_journal -> j_commit_callback = ext4_journal_commit_callback ; no_journal : sbi -> s_mb_cache = ext4_xattr_create_cache ( ) ; if ( ! sbi -> s_mb_cache ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>an<S2SV_blank>mb_cache\" ) ; goto failed_mount_wq ; } if ( ( DUMMY_ENCRYPTION_ENABLED ( sbi ) || ext4_has_feature_encrypt ( sb ) ) && ( blocksize != PAGE_SIZE ) ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>blocksize<S2SV_blank>for<S2SV_blank>fs<S2SV_blank>encryption\" ) ; goto failed_mount_wq ; } if ( DUMMY_ENCRYPTION_ENABLED ( sbi ) && ! ( sb -> s_flags & MS_RDONLY ) && ! ext4_has_feature_encrypt ( sb ) ) { ext4_set_feature_encrypt ( sb ) ; ext4_commit_super ( sb , 1 ) ; } if ( es -> s_overhead_clusters ) sbi -> s_overhead = le32_to_cpu ( es -> s_overhead_clusters ) ; else { err = ext4_calculate_overhead ( sb ) ; if ( err ) goto failed_mount_wq ; } EXT4_SB ( sb ) -> rsv_conversion_wq = alloc_workqueue ( \"ext4-rsv-conversion\" , WQ_MEM_RECLAIM | WQ_UNBOUND , 1 ) ; if ( ! EXT4_SB ( sb ) -> rsv_conversion_wq ) { printk ( KERN_ERR \"EXT4-fs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>workqueue\\\\n\" ) ; ret = - ENOMEM ; goto failed_mount4 ; } root = ext4_iget ( sb , EXT4_ROOT_INO ) ; if ( IS_ERR ( root ) ) { ext4_msg ( sb , KERN_ERR , \"get<S2SV_blank>root<S2SV_blank>inode<S2SV_blank>failed\" ) ; ret = PTR_ERR ( root ) ; root = NULL ; goto failed_mount4 ; } if ( ! S_ISDIR ( root -> i_mode ) || ! root -> i_blocks || ! root -> i_size ) { ext4_msg ( sb , KERN_ERR , \"corrupt<S2SV_blank>root<S2SV_blank>inode,<S2SV_blank>run<S2SV_blank>e2fsck\" ) ; iput ( root ) ; goto failed_mount4 ; } sb -> s_root = d_make_root ( root ) ; if ( ! sb -> s_root ) { ext4_msg ( sb , KERN_ERR , \"get<S2SV_blank>root<S2SV_blank>dentry<S2SV_blank>failed\" ) ; ret = - ENOMEM ; goto failed_mount4 ; } if ( ext4_setup_super ( sb , es , sb -> s_flags & MS_RDONLY ) ) sb -> s_flags |= MS_RDONLY ; if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; if ( ext4_has_feature_extra_isize ( sb ) ) { if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_want_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_want_extra_isize ) ; if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_min_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_min_extra_isize ) ; } } if ( EXT4_GOOD_OLD_INODE_SIZE + sbi -> s_want_extra_isize > sbi -> s_inode_size ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; ext4_msg ( sb , KERN_INFO , \"required<S2SV_blank>extra<S2SV_blank>inode<S2SV_blank>space<S2SV_blank>not\" \"available\" ) ; } ext4_set_resv_clusters ( sb ) ; err = ext4_setup_system_zone ( sb ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>system<S2SV_blank>\" \"zone<S2SV_blank>(%d)\" , err ) ; goto failed_mount4a ; } ext4_ext_init ( sb ) ; err = ext4_mb_init ( sb ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>mballoc<S2SV_blank>(%d)\" , err ) ; goto failed_mount5 ; } block = ext4_count_free_clusters ( sb ) ; ext4_free_blocks_count_set ( sbi -> s_es , EXT4_C2B ( sbi , block ) ) ; err = percpu_counter_init ( & sbi -> s_freeclusters_counter , block , GFP_KERNEL ) ; if ( ! err ) { unsigned long freei = ext4_count_free_inodes ( sb ) ; sbi -> s_es -> s_free_inodes_count = cpu_to_le32 ( freei ) ; err = percpu_counter_init ( & sbi -> s_freeinodes_counter , freei , GFP_KERNEL ) ; } if ( ! err ) err = percpu_counter_init ( & sbi -> s_dirs_counter , ext4_count_dirs ( sb ) , GFP_KERNEL ) ; if ( ! err ) err = percpu_counter_init ( & sbi -> s_dirtyclusters_counter , 0 , GFP_KERNEL ) ; if ( ! err ) err = percpu_init_rwsem ( & sbi -> s_journal_flag_rwsem ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"insufficient<S2SV_blank>memory\" ) ; goto failed_mount6 ; } if ( ext4_has_feature_flex_bg ( sb ) ) if ( ! ext4_fill_flex_info ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>\" \"flex_bg<S2SV_blank>meta<S2SV_blank>info!\" ) ; goto failed_mount6 ; } err = ext4_register_li_request ( sb , first_not_zeroed ) ; if ( err ) goto failed_mount6 ; err = ext4_register_sysfs ( sb ) ; if ( err ) goto failed_mount7 ; # ifdef CONFIG_QUOTA if ( ext4_has_feature_quota ( sb ) && ! ( sb -> s_flags & MS_RDONLY ) ) { err = ext4_enable_quotas ( sb ) ; if ( err ) goto failed_mount8 ; } # endif EXT4_SB ( sb ) -> s_mount_state |= EXT4_ORPHAN_FS ; ext4_orphan_cleanup ( sb , es ) ; EXT4_SB ( sb ) -> s_mount_state &= ~ EXT4_ORPHAN_FS ; if ( needs_recovery ) { ext4_msg ( sb , KERN_INFO , \"recovery<S2SV_blank>complete\" ) ; ext4_mark_recovery_complete ( sb , es ) ; } if ( EXT4_SB ( sb ) -> s_journal ) { if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) descr = \"<S2SV_blank>journalled<S2SV_blank>data<S2SV_blank>mode\" ; else if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_ORDERED_DATA ) descr = \"<S2SV_blank>ordered<S2SV_blank>data<S2SV_blank>mode\" ; else descr = \"<S2SV_blank>writeback<S2SV_blank>data<S2SV_blank>mode\" ; } else descr = \"out<S2SV_blank>journal\" ; if ( test_opt ( sb , DISCARD ) ) { struct request_queue * q = bdev_get_queue ( sb -> s_bdev ) ; if ( ! blk_queue_discard ( q ) ) ext4_msg ( sb , KERN_WARNING , \"mounting<S2SV_blank>with<S2SV_blank>\\\\\"discard\\\\\"<S2SV_blank>option,<S2SV_blank>but<S2SV_blank>\" \"the<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>discard\" ) ; } if ( ___ratelimit ( & ext4_mount_msg_ratelimit , \"EXT4-fs<S2SV_blank>mount\" ) ) ext4_msg ( sb , KERN_INFO , \"mounted<S2SV_blank>filesystem<S2SV_blank>with%s.<S2SV_blank>\" \"Opts:<S2SV_blank>%.*s%s%s\" , descr , ( int ) sizeof ( sbi -> s_es -> s_mount_opts ) , sbi -> s_es -> s_mount_opts , * sbi -> s_es -> s_mount_opts ? \";<S2SV_blank>\" : \"\" , orig_data ) ; if ( es -> s_error_count ) mod_timer ( & sbi -> s_err_report , jiffies + 300 * HZ ) ; ratelimit_state_init ( & sbi -> s_err_ratelimit_state , 5 * HZ , 10 ) ; ratelimit_state_init ( & sbi -> s_warning_ratelimit_state , 5 * HZ , 10 ) ; ratelimit_state_init ( & sbi -> s_msg_ratelimit_state , 5 * HZ , 10 ) ; kfree ( orig_data ) ; # ifdef CONFIG_EXT4_FS_ENCRYPTION memcpy ( sbi -> key_prefix , EXT4_KEY_DESC_PREFIX , EXT4_KEY_DESC_PREFIX_SIZE ) ; sbi -> key_prefix_size = EXT4_KEY_DESC_PREFIX_SIZE ; # endif return 0 ; cantfind_ext4 : if ( ! silent ) ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Can\\'t<S2SV_blank>find<S2SV_blank>ext4<S2SV_blank>filesystem\" ) ; goto failed_mount ; # ifdef CONFIG_QUOTA failed_mount8 : ext4_unregister_sysfs ( sb ) ; # endif failed_mount7 : ext4_unregister_li_request ( sb ) ; failed_mount6 : ext4_mb_release ( sb ) ; if ( sbi -> s_flex_groups ) kvfree ( sbi -> s_flex_groups ) ; percpu_counter_destroy ( & sbi -> s_freeclusters_counter ) ; percpu_counter_destroy ( & sbi -> s_freeinodes_counter ) ; percpu_counter_destroy ( & sbi -> s_dirs_counter ) ; percpu_counter_destroy ( & sbi -> s_dirtyclusters_counter ) ; failed_mount5 : ext4_ext_release ( sb ) ; ext4_release_system_zone ( sb ) ; failed_mount4a : dput ( sb -> s_root ) ; sb -> s_root = NULL ; failed_mount4 : ext4_msg ( sb , KERN_ERR , \"mount<S2SV_blank>failed\" ) ; if ( EXT4_SB ( sb ) -> rsv_conversion_wq ) destroy_workqueue ( EXT4_SB ( sb ) -> rsv_conversion_wq ) ; failed_mount_wq : if ( sbi -> s_mb_cache ) { ext4_xattr_destroy_cache ( sbi -> s_mb_cache ) ; sbi -> s_mb_cache = NULL ; } if ( sbi -> s_journal ) { jbd2_journal_destroy ( sbi -> s_journal ) ; sbi -> s_journal = NULL ; } failed_mount3a : ext4_es_unregister_shrinker ( sbi ) ; failed_mount3 : del_timer_sync ( & sbi -> s_err_report ) ; if ( sbi -> s_mmp_tsk ) kthread_stop ( sbi -> s_mmp_tsk ) ; failed_mount2 : for ( i = 0 ; i < db_count ; i ++ ) brelse ( sbi -> s_group_desc [ i ] ) ; kvfree ( sbi -> s_group_desc ) ; failed_mount : if ( sbi -> s_chksum_driver ) crypto_free_shash ( sbi -> s_chksum_driver ) ; # ifdef CONFIG_QUOTA for ( i = 0 ; i < EXT4_MAXQUOTAS ; i ++ ) kfree ( sbi -> s_qf_names [ i ] ) ; # endif ext4_blkdev_remove ( sbi ) ; brelse ( bh ) ; out_fail : sb -> s_fs_info = NULL ; kfree ( sbi -> s_blockgroup_lock ) ; out_free_base : kfree ( sbi ) ; kfree ( orig_data ) ; return err ? err : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sb ) ; if ( ext4_has_feature_meta_bg ( sb ) ) { if ( le32_to_cpu ( es -> s_first_meta_bg ) >= db_count ) { ext4_msg ( sb , KERN_WARNING , \"first<S2SV_blank>meta<S2SV_blank>block<S2SV_blank>group<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%u<S2SV_blank>\" \"(group<S2SV_blank>descriptor<S2SV_blank>block<S2SV_blank>count<S2SV_blank>%u)\" , le32_to_cpu ( es -> s_first_meta_bg ) , db_count ) ; goto failed_mount ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 static int tcos_select_file ( sc_card_t * card , const sc_path_t * in_path , sc_file_t * * file_out ) { sc_context_t * ctx ; sc_apdu_t apdu ; sc_file_t * file = NULL ; u8 buf [ SC_MAX_APDU_BUFFER_SIZE ] , pathbuf [ SC_MAX_PATH_SIZE ] , * path = pathbuf ; unsigned int i ; int r , pathlen ; assert ( card != NULL && in_path != NULL ) ; ctx = card -> ctx ; memcpy ( path , in_path -> value , in_path -> len ) ; pathlen = in_path -> len ; sc_format_apdu ( card , & apdu , SC_APDU_CASE_4_SHORT , 0xA4 , 0 , 0x04 ) ; switch ( in_path -> type ) { case SC_PATH_TYPE_FILE_ID : if ( pathlen != 2 ) return SC_ERROR_INVALID_ARGUMENTS ; case SC_PATH_TYPE_FROM_CURRENT : apdu . p1 = 9 ; break ; case SC_PATH_TYPE_DF_NAME : apdu . p1 = 4 ; break ; case SC_PATH_TYPE_PATH : apdu . p1 = 8 ; if ( pathlen >= 2 && memcmp ( path , \"\\\\x3F\\\\x00\" , 2 ) == 0 ) path += 2 , pathlen -= 2 ; if ( pathlen == 0 ) apdu . p1 = 0 ; break ; case SC_PATH_TYPE_PARENT : apdu . p1 = 3 ; pathlen = 0 ; break ; default : SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_VERBOSE , SC_ERROR_INVALID_ARGUMENTS ) ; } if ( pathlen == 0 ) apdu . cse = SC_APDU_CASE_2_SHORT ; apdu . lc = pathlen ; apdu . data = path ; apdu . datalen = pathlen ; if ( file_out != NULL ) { apdu . resp = buf ; apdu . resplen = sizeof ( buf ) ; apdu . le = 256 ; } else { apdu . resplen = 0 ; apdu . le = 0 ; apdu . p2 = 0x0C ; apdu . cse = ( pathlen == 0 ) ? SC_APDU_CASE_1 : SC_APDU_CASE_3_SHORT ; } r = sc_transmit_apdu ( card , & apdu ) ; SC_TEST_RET ( ctx , SC_LOG_DEBUG_NORMAL , r , \"APDU<S2SV_blank>transmit<S2SV_blank>failed\" ) ; r = sc_check_sw ( card , apdu . sw1 , apdu . sw2 ) ; if ( r || file_out == NULL ) SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_VERBOSE , r ) ; if ( apdu . resplen < 1 || apdu . resp [ 0 ] != 0x62 ) { sc_debug ( ctx , SC_LOG_DEBUG_NORMAL , \"received<S2SV_blank>invalid<S2SV_blank>template<S2SV_blank>%02X\\\\n\" , apdu . resp [ 0 ] ) ; SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_VERBOSE , SC_ERROR_UNKNOWN_DATA_RECEIVED ) ; } file = sc_file_new ( ) ; if ( file == NULL ) SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_NORMAL , SC_ERROR_OUT_OF_MEMORY ) ; * file_out = file ; file -> path = * in_path ; for ( i = 2 ; i + 1 < apdu . resplen && i + 1 + apdu . resp [ i + 1 ] < apdu . resplen ; i += 2 + apdu . resp [ i + 1 ] ) { <S2SV_StartBug> int j , len = apdu . resp [ i + 1 ] ; <S2SV_EndBug> unsigned char type = apdu . resp [ i ] , * d = apdu . resp + i + 2 ; switch ( type ) { case 0x80 : case 0x81 : file -> size = 0 ; for ( j = 0 ; j < len ; ++ j ) file -> size = ( file -> size << 8 ) | d [ j ] ; break ; case 0x82 : file -> shareable = ( d [ 0 ] & 0x40 ) ? 1 : 0 ; file -> ef_structure = d [ 0 ] & 7 ; switch ( ( d [ 0 ] >> 3 ) & 7 ) { case 0 : file -> type = SC_FILE_TYPE_WORKING_EF ; break ; case 7 : file -> type = SC_FILE_TYPE_DF ; break ; default : sc_debug ( ctx , SC_LOG_DEBUG_NORMAL , \"invalid<S2SV_blank>file<S2SV_blank>type<S2SV_blank>%02X<S2SV_blank>in<S2SV_blank>file<S2SV_blank>descriptor\\\\n\" , d [ 0 ] ) ; SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_VERBOSE , SC_ERROR_UNKNOWN_DATA_RECEIVED ) ; } break ; case 0x83 : file -> id = ( d [ 0 ] << 8 ) | d [ 1 ] ; break ; case 0x84 : <S2SV_StartBug> memcpy ( file -> name , d , len ) ; <S2SV_EndBug> <S2SV_StartBug> file -> namelen = len ; <S2SV_EndBug> break ; case 0x86 : sc_file_set_sec_attr ( file , d , len ) ; break ; default : if ( len > 0 ) sc_file_set_prop_attr ( file , d , len ) ; } } file -> magic = SC_FILE_MAGIC ; parse_sec_attr ( card , file , file -> sec_attr , file -> sec_attr_len ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) { size_t <S2SV_ModEnd> j , len <S2SV_ModStart> case 0x84 : file -> namelen = MIN ( sizeof file -> name , len ) ; <S2SV_ModStart> , d , <S2SV_ModEnd> file -> namelen <S2SV_ModStart> file -> namelen ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0206\n\n```\nCWE-119 static int dtls1_process_buffered_records ( SSL * s ) { pitem * item ; item = pqueue_peek ( s -> d1 -> unprocessed_rcds . q ) ; if ( item ) { if ( s -> d1 -> unprocessed_rcds . epoch != s -> d1 -> r_epoch ) return ( 1 ) ; while ( pqueue_peek ( s -> d1 -> unprocessed_rcds . q ) ) { dtls1_get_unprocessed_record ( s ) ; if ( ! dtls1_process_record ( s ) ) return ( 0 ) ; <S2SV_StartBug> dtls1_buffer_record ( s , & ( s -> d1 -> processed_rcds ) , <S2SV_EndBug> <S2SV_StartBug> s -> s3 -> rrec . seq_num ) ; <S2SV_EndBug> } } s -> d1 -> processed_rcds . epoch = s -> d1 -> r_epoch ; s -> d1 -> unprocessed_rcds . epoch = s -> d1 -> r_epoch + 1 ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; if ( <S2SV_ModStart> . seq_num ) < 0 ) return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18344\n\n```\nCWE-125 static struct pid * good_sigevent ( sigevent_t * event ) { struct task_struct * rtn = current -> group_leader ; <S2SV_StartBug> if ( ( event -> sigev_notify & SIGEV_THREAD_ID ) && <S2SV_EndBug> <S2SV_StartBug> ( ! ( rtn = find_task_by_vpid ( event -> sigev_notify_thread_id ) ) || <S2SV_EndBug> <S2SV_StartBug> ! same_thread_group ( rtn , current ) || <S2SV_EndBug> ( event -> sigev_notify & ~ SIGEV_THREAD_ID ) != SIGEV_SIGNAL ) ) return NULL ; <S2SV_StartBug> if ( ( ( event -> sigev_notify & ~ SIGEV_THREAD_ID ) != SIGEV_NONE ) && <S2SV_EndBug> <S2SV_StartBug> ( ( event -> sigev_signo <= 0 ) || ( event -> sigev_signo > SIGRTMAX ) ) ) <S2SV_EndBug> <S2SV_StartBug> return NULL ; <S2SV_EndBug> return task_pid ( rtn ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> group_leader ; switch <S2SV_ModEnd> ( event -> <S2SV_ModStart> event -> sigev_notify ) { case SIGEV_SIGNAL | SIGEV_THREAD_ID : <S2SV_ModEnd> rtn = find_task_by_vpid <S2SV_ModStart> -> sigev_notify_thread_id ) ; if ( ! rtn <S2SV_ModEnd> || ! same_thread_group <S2SV_ModStart> , current ) <S2SV_ModEnd> ) return NULL <S2SV_ModStart> return NULL ; case SIGEV_SIGNAL : case SIGEV_THREAD : if <S2SV_ModEnd> ( event -> <S2SV_ModStart> sigev_signo <= 0 || <S2SV_ModEnd> event -> sigev_signo <S2SV_ModStart> > SIGRTMAX ) <S2SV_ModEnd> return NULL ; <S2SV_ModStart> return NULL ; case SIGEV_NONE : <S2SV_ModStart> rtn ) ; default : return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0049\n\n```\nCWE-120 static int complete_emulated_mmio ( struct kvm_vcpu * vcpu ) { struct kvm_run * run = vcpu -> run ; struct kvm_mmio_fragment * frag ; unsigned len ; BUG_ON ( ! vcpu -> mmio_needed ) ; frag = & vcpu -> mmio_fragments [ vcpu -> mmio_cur_fragment ] ; len = min ( 8u , frag -> len ) ; if ( ! vcpu -> mmio_is_write ) memcpy ( frag -> data , run -> mmio . data , len ) ; if ( frag -> len <= 8 ) { frag ++ ; vcpu -> mmio_cur_fragment ++ ; } else { frag -> data += len ; frag -> gpa += len ; frag -> len -= len ; } <S2SV_StartBug> if ( vcpu -> mmio_cur_fragment == vcpu -> mmio_nr_fragments ) { <S2SV_EndBug> vcpu -> mmio_needed = 0 ; if ( vcpu -> mmio_is_write ) return 1 ; vcpu -> mmio_read_completed = 1 ; return complete_emulated_io ( vcpu ) ; } run -> exit_reason = KVM_EXIT_MMIO ; run -> mmio . phys_addr = frag -> gpa ; if ( vcpu -> mmio_is_write ) memcpy ( run -> mmio . data , frag -> data , min ( 8u , frag -> len ) ) ; run -> mmio . len = min ( 8u , frag -> len ) ; run -> mmio . is_write = vcpu -> mmio_is_write ; vcpu -> arch . complete_userspace_io = complete_emulated_mmio ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu -> mmio_cur_fragment >= <S2SV_ModEnd> vcpu -> mmio_nr_fragments\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7510\n\n```\nCWE-119 enum nss_status _nss_mymachines_getgrnam_r ( const char * name , struct group * gr , char * buffer , size_t buflen , int * errnop ) { _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL ; _cleanup_bus_message_unref_ sd_bus_message * reply = NULL ; _cleanup_bus_flush_close_unref_ sd_bus * bus = NULL ; const char * p , * e , * machine ; uint32_t mapped ; uid_t gid ; size_t l ; int r ; assert ( name ) ; assert ( gr ) ; p = startswith ( name , \"vg-\" ) ; if ( ! p ) goto not_found ; e = strrchr ( p , '-' ) ; if ( ! e || e == p ) goto not_found ; <S2SV_StartBug> r = parse_gid ( e + 1 , & gid ) ; <S2SV_EndBug> if ( r < 0 ) goto not_found ; machine = strndupa ( p , e - p ) ; if ( ! machine_name_is_valid ( machine ) ) goto not_found ; r = sd_bus_open_system ( & bus ) ; if ( r < 0 ) goto fail ; r = sd_bus_call_method ( bus , \"org.freedesktop.machine1\" , \"/org/freedesktop/machine1\" , \"org.freedesktop.machine1.Manager\" , \"MapFromMachineGroup\" , & error , & reply , \"su\" , machine , ( uint32_t ) gid ) ; if ( r < 0 ) { if ( sd_bus_error_has_name ( & error , BUS_ERROR_NO_SUCH_GROUP_MAPPING ) ) goto not_found ; goto fail ; } r = sd_bus_message_read ( reply , \"u\" , & mapped ) ; if ( r < 0 ) goto fail ; l = sizeof ( char * ) + strlen ( name ) + 1 ; if ( buflen < l ) { * errnop = ENOMEM ; return NSS_STATUS_TRYAGAIN ; } memzero ( buffer , sizeof ( char * ) ) ; strcpy ( buffer + sizeof ( char * ) , name ) ; gr -> gr_name = buffer + sizeof ( char * ) ; gr -> gr_gid = gid ; gr -> gr_passwd = ( char * ) \"*\" ; gr -> gr_mem = ( char * * ) buffer ; * errnop = 0 ; return NSS_STATUS_SUCCESS ; not_found : * errnop = 0 ; return NSS_STATUS_NOTFOUND ; fail : * errnop = - r ; return NSS_STATUS_UNAVAIL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto not_found ; if ( e - p > HOST_NAME_MAX - 1 ) goto not_found ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4805\n\n```\nCWE-416 void ppp_unregister_channel ( struct ppp_channel * chan ) { struct channel * pch = chan -> ppp ; struct ppp_net * pn ; if ( ! pch ) return ; chan -> ppp = NULL ; down_write ( & pch -> chan_sem ) ; spin_lock_bh ( & pch -> downl ) ; pch -> chan = NULL ; spin_unlock_bh ( & pch -> downl ) ; up_write ( & pch -> chan_sem ) ; ppp_disconnect_channel ( pch ) ; pn = ppp_pernet ( pch -> chan_net ) ; spin_lock_bh ( & pn -> all_channels_lock ) ; list_del ( & pch -> list ) ; spin_unlock_bh ( & pn -> all_channels_lock ) ; <S2SV_StartBug> pch -> file . dead = 1 ; <S2SV_EndBug> wake_up_interruptible ( & pch -> file . rwait ) ; if ( atomic_dec_and_test ( & pch -> file . refcnt ) ) ppp_destroy_channel ( pch ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> all_channels_lock ) ; put_net ( pch -> chan_net ) ; pch -> chan_net = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void dm9000WritePhyReg ( uint8_t address , uint16_t data ) { <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_EPAR , 0x40 | address ) ; <S2SV_EndBug> <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_EPDRL , LSB ( data ) ) ; <S2SV_EndBug> <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_EPDRH , MSB ( data ) ) ; <S2SV_EndBug> <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_EPCR , EPCR_EPOS | EPCR_ERPRW ) ; <S2SV_EndBug> <S2SV_StartBug> while ( ( dm9000ReadReg ( DM9000_REG_EPCR ) & EPCR_ERRE ) != 0 ) <S2SV_EndBug> { } usleep ( 5 ) ; <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_EPCR , EPCR_EPOS ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { dm9000WriteReg ( DM9000_EPAR <S2SV_ModEnd> , 0x40 | <S2SV_ModStart> ; dm9000WriteReg ( DM9000_EPDRL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ; dm9000WriteReg ( DM9000_EPDRH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ; dm9000WriteReg ( DM9000_EPCR , DM9000_EPCR_EPOS | DM9000_EPCR_ERPRW <S2SV_ModEnd> ) ; while <S2SV_ModStart> ( dm9000ReadReg ( DM9000_EPCR ) & DM9000_EPCR_ERRE <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ; dm9000WriteReg ( DM9000_EPCR , DM9000_EPCR_EPOS <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8645\n\n```\nCWE-284 int tcp_v4_rcv ( struct sk_buff * skb ) { struct net * net = dev_net ( skb -> dev ) ; const struct iphdr * iph ; const struct tcphdr * th ; bool refcounted ; struct sock * sk ; int ret ; if ( skb -> pkt_type != PACKET_HOST ) goto discard_it ; __TCP_INC_STATS ( net , TCP_MIB_INSEGS ) ; if ( ! pskb_may_pull ( skb , sizeof ( struct tcphdr ) ) ) goto discard_it ; th = ( const struct tcphdr * ) skb -> data ; if ( unlikely ( th -> doff < sizeof ( struct tcphdr ) / 4 ) ) goto bad_packet ; if ( ! pskb_may_pull ( skb , th -> doff * 4 ) ) goto discard_it ; if ( skb_checksum_init ( skb , IPPROTO_TCP , inet_compute_pseudo ) ) goto csum_error ; th = ( const struct tcphdr * ) skb -> data ; iph = ip_hdr ( skb ) ; memmove ( & TCP_SKB_CB ( skb ) -> header . h4 , IPCB ( skb ) , sizeof ( struct inet_skb_parm ) ) ; barrier ( ) ; TCP_SKB_CB ( skb ) -> seq = ntohl ( th -> seq ) ; TCP_SKB_CB ( skb ) -> end_seq = ( TCP_SKB_CB ( skb ) -> seq + th -> syn + th -> fin + skb -> len - th -> doff * 4 ) ; TCP_SKB_CB ( skb ) -> ack_seq = ntohl ( th -> ack_seq ) ; TCP_SKB_CB ( skb ) -> tcp_flags = tcp_flag_byte ( th ) ; TCP_SKB_CB ( skb ) -> tcp_tw_isn = 0 ; TCP_SKB_CB ( skb ) -> ip_dsfield = ipv4_get_dsfield ( iph ) ; TCP_SKB_CB ( skb ) -> sacked = 0 ; lookup : sk = __inet_lookup_skb ( & tcp_hashinfo , skb , __tcp_hdrlen ( th ) , th -> source , th -> dest , & refcounted ) ; if ( ! sk ) goto no_tcp_socket ; process : if ( sk -> sk_state == TCP_TIME_WAIT ) goto do_time_wait ; if ( sk -> sk_state == TCP_NEW_SYN_RECV ) { struct request_sock * req = inet_reqsk ( sk ) ; struct sock * nsk ; sk = req -> rsk_listener ; if ( unlikely ( tcp_v4_inbound_md5_hash ( sk , skb ) ) ) { sk_drops_add ( sk , skb ) ; reqsk_put ( req ) ; goto discard_it ; } if ( unlikely ( sk -> sk_state != TCP_LISTEN ) ) { inet_csk_reqsk_queue_drop_and_put ( sk , req ) ; goto lookup ; } sock_hold ( sk ) ; refcounted = true ; nsk = tcp_check_req ( sk , skb , req , false ) ; if ( ! nsk ) { reqsk_put ( req ) ; goto discard_and_relse ; } if ( nsk == sk ) { reqsk_put ( req ) ; } else if ( tcp_child_process ( sk , nsk , skb ) ) { tcp_v4_send_reset ( nsk , skb ) ; goto discard_and_relse ; } else { sock_put ( sk ) ; return 0 ; } } if ( unlikely ( iph -> ttl < inet_sk ( sk ) -> min_ttl ) ) { __NET_INC_STATS ( net , LINUX_MIB_TCPMINTTLDROP ) ; goto discard_and_relse ; } if ( ! xfrm4_policy_check ( sk , XFRM_POLICY_IN , skb ) ) goto discard_and_relse ; if ( tcp_v4_inbound_md5_hash ( sk , skb ) ) goto discard_and_relse ; nf_reset ( skb ) ; <S2SV_StartBug> if ( sk_filter ( sk , skb ) ) <S2SV_EndBug> <S2SV_StartBug> goto discard_and_relse ; <S2SV_EndBug> skb -> dev = NULL ; if ( sk -> sk_state == TCP_LISTEN ) { ret = tcp_v4_do_rcv ( sk , skb ) ; goto put_and_return ; } sk_incoming_cpu_update ( sk ) ; bh_lock_sock_nested ( sk ) ; tcp_segs_in ( tcp_sk ( sk ) , skb ) ; ret = 0 ; if ( ! sock_owned_by_user ( sk ) ) { if ( ! tcp_prequeue ( sk , skb ) ) ret = tcp_v4_do_rcv ( sk , skb ) ; } else if ( tcp_add_backlog ( sk , skb ) ) { goto discard_and_relse ; } bh_unlock_sock ( sk ) ; put_and_return : if ( refcounted ) sock_put ( sk ) ; return ret ; no_tcp_socket : if ( ! xfrm4_policy_check ( NULL , XFRM_POLICY_IN , skb ) ) goto discard_it ; if ( tcp_checksum_complete ( skb ) ) { csum_error : __TCP_INC_STATS ( net , TCP_MIB_CSUMERRORS ) ; bad_packet : __TCP_INC_STATS ( net , TCP_MIB_INERRS ) ; } else { tcp_v4_send_reset ( NULL , skb ) ; } discard_it : kfree_skb ( skb ) ; return 0 ; discard_and_relse : sk_drops_add ( sk , skb ) ; if ( refcounted ) sock_put ( sk ) ; goto discard_it ; do_time_wait : if ( ! xfrm4_policy_check ( NULL , XFRM_POLICY_IN , skb ) ) { inet_twsk_put ( inet_twsk ( sk ) ) ; goto discard_it ; } if ( tcp_checksum_complete ( skb ) ) { inet_twsk_put ( inet_twsk ( sk ) ) ; goto csum_error ; } switch ( tcp_timewait_state_process ( inet_twsk ( sk ) , skb , th ) ) { case TCP_TW_SYN : { struct sock * sk2 = inet_lookup_listener ( dev_net ( skb -> dev ) , & tcp_hashinfo , skb , __tcp_hdrlen ( th ) , iph -> saddr , th -> source , iph -> daddr , th -> dest , inet_iif ( skb ) ) ; if ( sk2 ) { inet_twsk_deschedule_put ( inet_twsk ( sk ) ) ; sk = sk2 ; refcounted = false ; goto process ; } } case TCP_TW_ACK : tcp_v4_timewait_ack ( sk , skb ) ; break ; case TCP_TW_RST : tcp_v4_send_reset ( sk , skb ) ; inet_twsk_deschedule_put ( inet_twsk ( sk ) ) ; goto discard_it ; case TCP_TW_SUCCESS : ; } goto discard_it ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( tcp_filter <S2SV_ModEnd> ( sk , <S2SV_ModStart> ) goto discard_and_relse ; th = ( const struct tcphdr * ) skb -> data ; iph = ip_hdr ( skb )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-4650\n\n```\nCWE-119 long fuse_do_ioctl ( struct file * file , unsigned int cmd , unsigned long arg , unsigned int flags ) { struct fuse_file * ff = file -> private_data ; struct fuse_conn * fc = ff -> fc ; struct fuse_ioctl_in inarg = { . fh = ff -> fh , . cmd = cmd , . arg = arg , . flags = flags } ; struct fuse_ioctl_out outarg ; struct fuse_req * req = NULL ; struct page * * pages = NULL ; struct page * iov_page = NULL ; struct iovec * in_iov = NULL , * out_iov = NULL ; unsigned int in_iovs = 0 , out_iovs = 0 , num_pages = 0 , max_pages ; size_t in_size , out_size , transferred ; int err ; BUILD_BUG_ON ( sizeof ( struct iovec ) * FUSE_IOCTL_MAX_IOV > PAGE_SIZE ) ; err = - ENOMEM ; pages = kzalloc ( sizeof ( pages [ 0 ] ) * FUSE_MAX_PAGES_PER_REQ , GFP_KERNEL ) ; iov_page = alloc_page ( GFP_KERNEL ) ; if ( ! pages || ! iov_page ) goto out ; if ( ! ( flags & FUSE_IOCTL_UNRESTRICTED ) ) { struct iovec * iov = page_address ( iov_page ) ; iov -> iov_base = ( void __user * ) arg ; iov -> iov_len = _IOC_SIZE ( cmd ) ; if ( _IOC_DIR ( cmd ) & _IOC_WRITE ) { in_iov = iov ; in_iovs = 1 ; } if ( _IOC_DIR ( cmd ) & _IOC_READ ) { out_iov = iov ; out_iovs = 1 ; } } retry : inarg . in_size = in_size = iov_length ( in_iov , in_iovs ) ; inarg . out_size = out_size = iov_length ( out_iov , out_iovs ) ; out_size = max_t ( size_t , out_size , PAGE_SIZE ) ; max_pages = DIV_ROUND_UP ( max ( in_size , out_size ) , PAGE_SIZE ) ; err = - ENOMEM ; if ( max_pages > FUSE_MAX_PAGES_PER_REQ ) goto out ; while ( num_pages < max_pages ) { pages [ num_pages ] = alloc_page ( GFP_KERNEL | __GFP_HIGHMEM ) ; if ( ! pages [ num_pages ] ) goto out ; num_pages ++ ; } req = fuse_get_req ( fc ) ; if ( IS_ERR ( req ) ) { err = PTR_ERR ( req ) ; req = NULL ; goto out ; } memcpy ( req -> pages , pages , sizeof ( req -> pages [ 0 ] ) * num_pages ) ; req -> num_pages = num_pages ; req -> in . h . opcode = FUSE_IOCTL ; req -> in . h . nodeid = ff -> nodeid ; req -> in . numargs = 1 ; req -> in . args [ 0 ] . size = sizeof ( inarg ) ; req -> in . args [ 0 ] . value = & inarg ; if ( in_size ) { req -> in . numargs ++ ; req -> in . args [ 1 ] . size = in_size ; req -> in . argpages = 1 ; err = fuse_ioctl_copy_user ( pages , in_iov , in_iovs , in_size , false ) ; if ( err ) goto out ; } req -> out . numargs = 2 ; req -> out . args [ 0 ] . size = sizeof ( outarg ) ; req -> out . args [ 0 ] . value = & outarg ; req -> out . args [ 1 ] . size = out_size ; req -> out . argpages = 1 ; req -> out . argvar = 1 ; fuse_request_send ( fc , req ) ; err = req -> out . h . error ; transferred = req -> out . args [ 1 ] . size ; fuse_put_request ( fc , req ) ; req = NULL ; if ( err ) goto out ; if ( outarg . flags & FUSE_IOCTL_RETRY ) { char * vaddr ; err = - EIO ; if ( ! ( flags & FUSE_IOCTL_UNRESTRICTED ) ) goto out ; in_iovs = outarg . in_iovs ; out_iovs = outarg . out_iovs ; err = - ENOMEM ; if ( in_iovs > FUSE_IOCTL_MAX_IOV || out_iovs > FUSE_IOCTL_MAX_IOV || in_iovs + out_iovs > FUSE_IOCTL_MAX_IOV ) goto out ; vaddr = kmap_atomic ( pages [ 0 ] , KM_USER0 ) ; err = fuse_copy_ioctl_iovec ( page_address ( iov_page ) , vaddr , transferred , in_iovs + out_iovs , ( flags & FUSE_IOCTL_COMPAT ) != 0 ) ; kunmap_atomic ( vaddr , KM_USER0 ) ; if ( err ) goto out ; in_iov = page_address ( iov_page ) ; out_iov = in_iov + in_iovs ; <S2SV_StartBug> goto retry ; <S2SV_EndBug> } err = - EIO ; if ( transferred > inarg . out_size ) goto out ; err = fuse_ioctl_copy_user ( pages , out_iov , out_iovs , transferred , true ) ; out : if ( req ) fuse_put_request ( fc , req ) ; if ( iov_page ) __free_page ( iov_page ) ; while ( num_pages ) __free_page ( pages [ -- num_pages ] ) ; kfree ( pages ) ; return err ? err : outarg . result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + in_iovs ; err = fuse_verify_ioctl_iov ( in_iov , in_iovs ) ; if ( err ) goto out ; err = fuse_verify_ioctl_iov ( out_iov , out_iovs ) ; if ( err ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1417\n\n```\nCWE-20 static krb5_error_code find_alternate_tgs ( kdc_realm_t * kdc_active_realm , krb5_principal princ , krb5_db_entry * * server_ptr , const char * * status ) { krb5_error_code retval ; krb5_principal * plist = NULL , * pl2 ; krb5_data tmp ; krb5_db_entry * server = NULL ; * server_ptr = NULL ; assert ( is_cross_tgs_principal ( princ ) ) ; if ( ( retval = krb5_walk_realm_tree ( kdc_context , krb5_princ_realm ( kdc_context , princ ) , krb5_princ_component ( kdc_context , princ , 1 ) , & plist , KRB5_REALM_BRANCH_CHAR ) ) ) { goto cleanup ; } for ( pl2 = plist ; * pl2 ; pl2 ++ ) ; while ( -- pl2 > plist ) { tmp = * krb5_princ_realm ( kdc_context , * pl2 ) ; krb5_princ_set_realm ( kdc_context , * pl2 , krb5_princ_realm ( kdc_context , tgs_server ) ) ; retval = db_get_svc_princ ( kdc_context , * pl2 , 0 , & server , status ) ; krb5_princ_set_realm ( kdc_context , * pl2 , & tmp ) ; if ( retval == KRB5_KDB_NOENTRY ) continue ; else if ( retval ) goto cleanup ; log_tgs_alt_tgt ( kdc_context , server -> princ ) ; * server_ptr = server ; server = NULL ; goto cleanup ; } cleanup : <S2SV_StartBug> if ( retval != 0 ) <S2SV_EndBug> * status = \"UNKNOWN_SERVER\" ; krb5_free_realm_tree ( kdc_context , plist ) ; krb5_db_free_principal ( kdc_context , server ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( retval == 0 && server_ptr == NULL ) retval = KRB5_KDB_NOENTRY ; if ( retval\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1179\n\n```\nCWE-264 static inline unsigned long zap_pmd_range ( struct mmu_gather * tlb , struct vm_area_struct * vma , pud_t * pud , unsigned long addr , unsigned long end , struct zap_details * details ) { pmd_t * pmd ; unsigned long next ; pmd = pmd_offset ( pud , addr ) ; do { next = pmd_addr_end ( addr , end ) ; if ( pmd_trans_huge ( * pmd ) ) { if ( next - addr != HPAGE_PMD_SIZE ) { VM_BUG_ON ( ! rwsem_is_locked ( & tlb -> mm -> mmap_sem ) ) ; split_huge_page_pmd ( vma -> vm_mm , pmd ) ; } else if ( zap_huge_pmd ( tlb , vma , pmd , addr ) ) <S2SV_StartBug> continue ; <S2SV_EndBug> } <S2SV_StartBug> if ( pmd_none_or_clear_bad ( pmd ) ) <S2SV_EndBug> <S2SV_StartBug> continue ; <S2SV_EndBug> <S2SV_StartBug> next = zap_pte_range ( tlb , vma , pmd , addr , next , details ) ; <S2SV_EndBug> cond_resched ( ) ; } while ( pmd ++ , addr = next , addr != end ) ; return addr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> addr ) ) goto next <S2SV_ModEnd> ; } if <S2SV_ModStart> } if ( pmd_none_or_trans_huge_or_clear_bad <S2SV_ModEnd> ( pmd ) <S2SV_ModStart> pmd ) ) goto next <S2SV_ModEnd> ; next = <S2SV_ModStart> details ) ; next :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty ast_for_async_stmt ( struct compiling * c , const node * n ) { REQ ( n , async_stmt ) ; <S2SV_StartBug> REQ ( CHILD ( n , 0 ) , ASYNC ) ; <S2SV_EndBug> switch ( TYPE ( CHILD ( n , 1 ) ) ) { case funcdef : <S2SV_StartBug> return ast_for_funcdef_impl ( c , CHILD ( n , 1 ) , NULL , <S2SV_EndBug> <S2SV_StartBug> 1 ) ; <S2SV_EndBug> case with_stmt : <S2SV_StartBug> return ast_for_with_stmt ( c , CHILD ( n , 1 ) , <S2SV_EndBug> 1 ) ; case for_stmt : <S2SV_StartBug> return ast_for_for_stmt ( c , CHILD ( n , 1 ) , <S2SV_EndBug> 1 ) ; default : PyErr_Format ( PyExc_SystemError , \"invalid<S2SV_blank>async<S2SV_blank>stament:<S2SV_blank>%s\" , STR ( CHILD ( n , 1 ) ) ) ; return NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) , NAME ) ; assert ( strcmp ( STR ( CHILD ( n , 0 ) ) , \"async\" ) == 0 <S2SV_ModEnd> ) ; switch <S2SV_ModStart> ( c , n <S2SV_ModEnd> , NULL , <S2SV_ModStart> , NULL , true <S2SV_ModEnd> ) ; case <S2SV_ModStart> ( c , n , true <S2SV_ModEnd> ) ; case <S2SV_ModStart> ( c , n , true <S2SV_ModEnd> ) ; default\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14464\n\n```\nCWE-125 static int lmp_print_data_link_subobjs ( netdissect_options * ndo , const u_char * obj_tptr , int total_subobj_len , int offset ) { int hexdump = FALSE ; int subobj_type , subobj_len ; union { float f ; uint32_t i ; } bw ; while ( total_subobj_len > 0 && hexdump == FALSE ) { subobj_type = EXTRACT_8BITS ( obj_tptr + offset ) ; subobj_len = EXTRACT_8BITS ( obj_tptr + offset + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Subobject,<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Length:<S2SV_blank>%u\" , tok2str ( lmp_data_link_subobj , \"Unknown\" , subobj_type ) , subobj_type , subobj_len ) ) ; if ( subobj_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short)\" ) ) ; break ; } if ( ( subobj_len % 4 ) != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4)\" ) ) ; break ; } if ( total_subobj_len < subobj_len ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(goes<S2SV_blank>past<S2SV_blank>the<S2SV_blank>end<S2SV_blank>of<S2SV_blank>the<S2SV_blank>object)\" ) ) ; break ; } switch ( subobj_type ) { case INT_SWITCHING_TYPE_SUBOBJ : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Switching<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( gmpls_switch_cap_values , \"Unknown\" , EXTRACT_8BITS ( obj_tptr + offset + 2 ) ) , EXTRACT_8BITS ( obj_tptr + offset + 2 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Encoding<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( gmpls_encoding_values , \"Unknown\" , EXTRACT_8BITS ( obj_tptr + offset + 3 ) ) , EXTRACT_8BITS ( obj_tptr + offset + 3 ) ) ) ; <S2SV_StartBug> bw . i = EXTRACT_32BITS ( obj_tptr + offset + 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Min<S2SV_blank>Reservable<S2SV_blank>Bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; bw . i = EXTRACT_32BITS ( obj_tptr + offset + 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Max<S2SV_blank>Reservable<S2SV_blank>Bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case WAVELENGTH_SUBOBJ : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Wavelength:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr + offset + 4 ) ) ) ; break ; default : hexdump = TRUE ; break ; } total_subobj_len -= subobj_len ; offset += subobj_len ; } return ( hexdump ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ND_TCHECK_32BITS ( obj_tptr + offset + 4 ) ; <S2SV_ModStart> hexdump ) ; trunc : return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15148\n\n```\nCWE-787 int main ( int argc , char * argv [ ] ) { int32_t ret = GPMF_OK ; GPMF_stream metadata_stream , * ms = & metadata_stream ; double metadatalength ; uint32_t * payload = NULL ; if ( argc != 2 ) { printf ( \"usage:<S2SV_blank>%s<S2SV_blank><file_with_GPMF>\\\\n\" , argv [ 0 ] ) ; return - 1 ; } size_t mp4 = OpenMP4Source ( argv [ 1 ] , MOV_GPMF_TRAK_TYPE , MOV_GPMF_TRAK_SUBTYPE ) ; <S2SV_StartBug> metadatalength = GetDuration ( mp4 ) ; <S2SV_EndBug> if ( metadatalength > 0.0 ) { uint32_t index , payloads = GetNumberPayloads ( mp4 ) ; # if 1 if ( payloads == 1 ) { uint32_t payloadsize = GetPayloadSize ( mp4 , 0 ) ; payload = GetPayload ( mp4 , payload , 0 ) ; if ( payload == NULL ) goto cleanup ; ret = GPMF_Init ( ms , payload , payloadsize ) ; if ( ret != GPMF_OK ) goto cleanup ; ret = GPMF_Validate ( ms , GPMF_RECURSE_LEVELS ) ; if ( GPMF_OK != ret ) { printf ( \"Invalid<S2SV_blank>Structure\\\\n\" ) ; goto cleanup ; } GPMF_ResetState ( ms ) ; do { PrintGPMF ( ms ) ; } while ( GPMF_OK == GPMF_Next ( ms , GPMF_RECURSE_LEVELS ) ) ; GPMF_ResetState ( ms ) ; printf ( \"\\\\n\" ) ; } # endif for ( index = 0 ; index < payloads ; index ++ ) { uint32_t payloadsize = GetPayloadSize ( mp4 , index ) ; <S2SV_StartBug> float in = 0.0 , out = 0.0 ; <S2SV_EndBug> payload = GetPayload ( mp4 , payload , index ) ; if ( payload == NULL ) goto cleanup ; ret = GetPayloadTime ( mp4 , index , & in , & out ) ; if ( ret != GPMF_OK ) goto cleanup ; ret = GPMF_Init ( ms , payload , payloadsize ) ; if ( ret != GPMF_OK ) goto cleanup ; # if 1 if ( index == 0 ) { ret = GPMF_FindNext ( ms , GPMF_KEY_STREAM , GPMF_RECURSE_LEVELS ) ; while ( GPMF_OK == ret ) { ret = GPMF_SeekToSamples ( ms ) ; if ( GPMF_OK == ret ) { uint32_t key = GPMF_Key ( ms ) ; GPMF_SampleType type = GPMF_Type ( ms ) ; uint32_t elements = GPMF_ElementsInStruct ( ms ) ; uint32_t samples = GPMF_PayloadSampleCount ( ms ) ; if ( samples ) { printf ( \"<S2SV_blank><S2SV_blank>STRM<S2SV_blank>of<S2SV_blank>%c%c%c%c<S2SV_blank>\" , PRINTF_4CC ( key ) ) ; if ( type == GPMF_TYPE_COMPLEX ) { GPMF_stream find_stream ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TYPE , GPMF_CURRENT_LEVEL ) ) { char tmp [ 64 ] ; char * data = ( char * ) GPMF_RawData ( & find_stream ) ; int size = GPMF_RawDataSize ( & find_stream ) ; if ( size < sizeof ( tmp ) ) { memcpy ( tmp , data , size ) ; tmp [ size ] = 0 ; printf ( \"of<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>\" , tmp ) ; } } } else { printf ( \"of<S2SV_blank>type<S2SV_blank>%c<S2SV_blank>\" , type ) ; } printf ( \"with<S2SV_blank>%d<S2SV_blank>sample%s<S2SV_blank>\" , samples , samples > 1 ? \"s\" : \"\" ) ; if ( elements > 1 ) printf ( \"--<S2SV_blank>%d<S2SV_blank>elements<S2SV_blank>per<S2SV_blank>sample\" , elements ) ; printf ( \"\\\\n\" ) ; } ret = GPMF_FindNext ( ms , GPMF_KEY_STREAM , GPMF_RECURSE_LEVELS ) ; } else { if ( ret == GPMF_ERROR_BAD_STRUCTURE ) { ret = GPMF_Next ( ms , GPMF_CURRENT_LEVEL ) ; } } } GPMF_ResetState ( ms ) ; printf ( \"\\\\n\" ) ; } # endif # if 1 if ( index == 0 ) { if ( GPMF_OK == GPMF_FindNext ( ms , STR2FOURCC ( \"GPS5\" ) , GPMF_RECURSE_LEVELS ) || GPMF_OK == GPMF_FindNext ( ms , STR2FOURCC ( \"GPRI\" ) , GPMF_RECURSE_LEVELS ) ) { uint32_t key = GPMF_Key ( ms ) ; uint32_t samples = GPMF_Repeat ( ms ) ; uint32_t elements = GPMF_ElementsInStruct ( ms ) ; uint32_t buffersize = samples * elements * sizeof ( double ) ; GPMF_stream find_stream ; double * ptr , * tmpbuffer = malloc ( buffersize ) ; char units [ 10 ] [ 6 ] = { \"\" } ; uint32_t unit_samples = 1 ; printf ( \"MP4<S2SV_blank>Payload<S2SV_blank>time<S2SV_blank>%.3f<S2SV_blank>to<S2SV_blank>%.3f<S2SV_blank>seconds\\\\n\" , in , out ) ; if ( tmpbuffer && samples ) { uint32_t i , j ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_SI_UNITS , GPMF_CURRENT_LEVEL ) || GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_UNITS , GPMF_CURRENT_LEVEL ) ) { char * data = ( char * ) GPMF_RawData ( & find_stream ) ; int ssize = GPMF_StructSize ( & find_stream ) ; unit_samples = GPMF_Repeat ( & find_stream ) ; for ( i = 0 ; i < unit_samples ; i ++ ) { memcpy ( units [ i ] , data , ssize ) ; units [ i ] [ ssize ] = 0 ; data += ssize ; } } GPMF_ScaledData ( ms , tmpbuffer , buffersize , 0 , samples , GPMF_TYPE_DOUBLE ) ; ptr = tmpbuffer ; for ( i = 0 ; i < samples ; i ++ ) { printf ( \"%c%c%c%c<S2SV_blank>\" , PRINTF_4CC ( key ) ) ; for ( j = 0 ; j < elements ; j ++ ) printf ( \"%.3f%s,<S2SV_blank>\" , * ptr ++ , units [ j % unit_samples ] ) ; printf ( \"\\\\n\" ) ; } free ( tmpbuffer ) ; } } GPMF_ResetState ( ms ) ; printf ( \"\\\\n\" ) ; } # endif } # if 1 while ( GPMF_OK == GPMF_FindNext ( ms , GPMF_KEY_STREAM , GPMF_RECURSE_LEVELS ) ) { if ( GPMF_OK == GPMF_SeekToSamples ( ms ) ) { <S2SV_StartBug> uint32_t fourcc = GPMF_Key ( ms ) ; <S2SV_EndBug> <S2SV_StartBug> double rate = GetGPMFSampleRate ( mp4 , fourcc , GPMF_SAMPLE_RATE_PRECISE ) ; <S2SV_EndBug> <S2SV_StartBug> printf ( \"%c%c%c%c<S2SV_blank>sampling<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%f<S2SV_blank>Hz\\\\n\" , PRINTF_4CC ( fourcc ) , rate ) ; <S2SV_EndBug> } } # endif cleanup : if ( payload ) FreePayload ( payload ) ; payload = NULL ; CloseSource ( mp4 ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MOV_GPMF_TRAK_SUBTYPE ) ; if ( mp4 == 0 ) { printf ( \"error:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>MP4/MOV\\\\n\" , argv [ 1 ] ) ; return - 1 ; } <S2SV_ModStart> index ) ; double <S2SV_ModEnd> in = 0.0 <S2SV_ModStart> ) ) { double in = 0.0 , out = 0.0 ; <S2SV_ModStart> fourcc , GPMF_SAMPLE_RATE_PRECISE , & in , & out ) ; printf ( \"%c%c%c%c<S2SV_blank>sampling<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%f<S2SV_blank>Hz<S2SV_blank>(from<S2SV_blank>%f<S2SV_blank>to<S2SV_blank>%f)\\\\n\" <S2SV_ModEnd> , PRINTF_4CC ( <S2SV_ModStart> ) , rate , in , out\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 stmt_ty <S2SV_StartBug> For ( expr_ty target , expr_ty iter , asdl_seq * body , asdl_seq * orelse , int <S2SV_EndBug> lineno , int col_offset , int end_lineno , int end_col_offset , PyArena * arena ) { stmt_ty p ; if ( ! target ) { PyErr_SetString ( PyExc_ValueError , \"field<S2SV_blank>target<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>For\" ) ; return NULL ; } if ( ! iter ) { PyErr_SetString ( PyExc_ValueError , \"field<S2SV_blank>iter<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>For\" ) ; return NULL ; } p = ( stmt_ty ) PyArena_Malloc ( arena , sizeof ( * p ) ) ; if ( ! p ) return NULL ; p -> kind = For_kind ; p -> v . For . target = target ; p -> v . For . iter = iter ; p -> v . For . body = body ; <S2SV_StartBug> p -> v . For . orelse = orelse ; <S2SV_EndBug> p -> lineno = lineno ; p -> col_offset = col_offset ; p -> end_lineno = end_lineno ; p -> end_col_offset = end_col_offset ; return p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * orelse , string type_comment , int <S2SV_ModEnd> lineno , int <S2SV_ModStart> orelse = orelse ; p -> v . For . type_comment = type_comment\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 Bool GPAC_EventProc ( void * ptr , GF_Event * evt ) { if ( ! term ) return 0 ; if ( gui_mode == 1 ) { if ( evt -> type == GF_EVENT_QUIT ) { Run = 0 ; } else if ( evt -> type == GF_EVENT_KEYDOWN ) { switch ( evt -> key . key_code ) { case GF_KEY_C : if ( evt -> key . flags & ( GF_KEY_MOD_CTRL | GF_KEY_MOD_ALT ) ) { hide_shell ( shell_visible ? 1 : 0 ) ; if ( shell_visible ) gui_mode = 2 ; } break ; default : break ; } } return 0 ; } switch ( evt -> type ) { case GF_EVENT_DURATION : Duration = ( u64 ) ( 1000 * ( s64 ) evt -> duration . duration ) ; CanSeek = evt -> duration . can_seek ; break ; case GF_EVENT_MESSAGE : { const char * servName ; if ( ! evt -> message . service || ! strcmp ( evt -> message . service , the_url ) ) { servName = \"\" ; } else if ( ! strnicmp ( evt -> message . service , \"data:\" , 5 ) ) { servName = \"(embedded<S2SV_blank>data)\" ; } else { servName = evt -> message . service ; } if ( ! evt -> message . message ) return 0 ; if ( evt -> message . error ) { if ( ! is_connected ) last_error = evt -> message . error ; if ( evt -> message . error == GF_SCRIPT_INFO ) { GF_LOG ( GF_LOG_INFO , GF_LOG_CONSOLE , ( \"%s\\\\n\" , evt -> message . message ) ) ; } else { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONSOLE , ( \"%s<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , servName , evt -> message . message , gf_error_to_string ( evt -> message . error ) ) ) ; } } else if ( ! be_quiet ) GF_LOG ( GF_LOG_INFO , GF_LOG_CONSOLE , ( \"%s<S2SV_blank>%s\\\\n\" , servName , evt -> message . message ) ) ; } break ; case GF_EVENT_PROGRESS : { char * szTitle = \"\" ; if ( evt -> progress . progress_type == 0 ) { szTitle = \"Buffer<S2SV_blank>\" ; if ( bench_mode && ( bench_mode != 3 ) ) { if ( evt -> progress . done >= evt -> progress . total ) bench_buffer = 0 ; else bench_buffer = 1 + 100 * evt -> progress . done / evt -> progress . total ; break ; } } else if ( evt -> progress . progress_type == 1 ) { if ( bench_mode ) break ; szTitle = \"Download<S2SV_blank>\" ; } else if ( evt -> progress . progress_type == 2 ) szTitle = \"Import<S2SV_blank>\" ; gf_set_progress ( szTitle , evt -> progress . done , evt -> progress . total ) ; } break ; case GF_EVENT_DBLCLICK : gf_term_set_option ( term , GF_OPT_FULLSCREEN , ! gf_term_get_option ( term , GF_OPT_FULLSCREEN ) ) ; return 0 ; case GF_EVENT_MOUSEDOWN : if ( evt -> mouse . button == GF_MOUSE_RIGHT ) { right_down = 1 ; last_x = evt -> mouse . x ; last_y = evt -> mouse . y ; } return 0 ; case GF_EVENT_MOUSEUP : if ( evt -> mouse . button == GF_MOUSE_RIGHT ) { right_down = 0 ; last_x = evt -> mouse . x ; last_y = evt -> mouse . y ; } return 0 ; case GF_EVENT_MOUSEMOVE : if ( right_down && ( user . init_flags & GF_TERM_WINDOWLESS ) ) { GF_Event move ; move . move . x = evt -> mouse . x - last_x ; move . move . y = last_y - evt -> mouse . y ; move . type = GF_EVENT_MOVE ; move . move . relative = 1 ; gf_term_user_event ( term , & move ) ; } return 0 ; case GF_EVENT_KEYUP : switch ( evt -> key . key_code ) { case GF_KEY_SPACE : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) switch_bench ( ! bench_mode ) ; break ; } break ; case GF_EVENT_KEYDOWN : gf_term_process_shortcut ( term , evt ) ; switch ( evt -> key . key_code ) { case GF_KEY_SPACE : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) { if ( ! bench_mode ) switch_bench ( ! bench_mode ) ; } break ; case GF_KEY_PAGEDOWN : case GF_KEY_MEDIANEXTTRACK : request_next_playlist_item = 1 ; break ; case GF_KEY_MEDIAPREVIOUSTRACK : break ; case GF_KEY_ESCAPE : gf_term_set_option ( term , GF_OPT_FULLSCREEN , ! gf_term_get_option ( term , GF_OPT_FULLSCREEN ) ) ; break ; case GF_KEY_C : if ( evt -> key . flags & ( GF_KEY_MOD_CTRL | GF_KEY_MOD_ALT ) ) { hide_shell ( shell_visible ? 1 : 0 ) ; if ( ! shell_visible ) gui_mode = 1 ; } break ; case GF_KEY_F : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) fprintf ( stderr , \"Rendering<S2SV_blank>rate:<S2SV_blank>%f<S2SV_blank>FPS\\\\n\" , gf_term_get_framerate ( term , 0 ) ) ; break ; case GF_KEY_T : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) fprintf ( stderr , \"Scene<S2SV_blank>Time:<S2SV_blank>%f<S2SV_blank>\\\\n\" , gf_term_get_time_in_ms ( term ) / 1000.0 ) ; break ; case GF_KEY_D : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_DRAW_MODE , ( gf_term_get_option ( term , GF_OPT_DRAW_MODE ) == GF_DRAW_MODE_DEFER ) ? GF_DRAW_MODE_IMMEDIATE : GF_DRAW_MODE_DEFER ) ; break ; case GF_KEY_4 : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_4_3 ) ; break ; case GF_KEY_5 : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_16_9 ) ; break ; case GF_KEY_6 : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_FILL_SCREEN ) ; break ; case GF_KEY_7 : if ( evt -> key . flags & GF_KEY_MOD_CTRL ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_KEEP ) ; break ; case GF_KEY_O : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { if ( gf_term_get_option ( term , GF_OPT_MAIN_ADDON ) ) { fprintf ( stderr , \"Resuming<S2SV_blank>to<S2SV_blank>main<S2SV_blank>content\\\\n\" ) ; gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_PLAY_LIVE ) ; } else { fprintf ( stderr , \"Main<S2SV_blank>addon<S2SV_blank>not<S2SV_blank>enabled\\\\n\" ) ; } } break ; case GF_KEY_P : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { u32 pause_state = gf_term_get_option ( term , GF_OPT_PLAY_STATE ) ; fprintf ( stderr , \"[Status:<S2SV_blank>%s]\\\\n\" , pause_state ? \"Playing\" : \"Paused\" ) ; if ( ( pause_state == GF_STATE_PAUSED ) && ( evt -> key . flags & GF_KEY_MOD_SHIFT ) ) { gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_PLAY_LIVE ) ; } else { gf_term_set_option ( term , GF_OPT_PLAY_STATE , ( pause_state == GF_STATE_PAUSED ) ? GF_STATE_PLAYING : GF_STATE_PAUSED ) ; } } break ; case GF_KEY_S : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_STEP_PAUSE ) ; fprintf ( stderr , \"Step<S2SV_blank>time:<S2SV_blank>\" ) ; PrintTime ( gf_term_get_time_in_ms ( term ) ) ; fprintf ( stderr , \"\\\\n\" ) ; } break ; case GF_KEY_B : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) ViewODs ( term , 1 ) ; break ; case GF_KEY_M : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) ViewODs ( term , 0 ) ; break ; case GF_KEY_H : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { gf_term_switch_quality ( term , 1 ) ; } break ; case GF_KEY_L : if ( ( evt -> key . flags & GF_KEY_MOD_CTRL ) && is_connected ) { gf_term_switch_quality ( term , 0 ) ; } break ; case GF_KEY_F5 : if ( is_connected ) reload = 1 ; break ; case GF_KEY_A : addon_visible = ! addon_visible ; gf_term_toggle_addons ( term , addon_visible ) ; break ; case GF_KEY_UP : if ( ( evt -> key . flags & VK_MOD ) && is_connected ) { do_set_speed ( playback_speed * 2 ) ; } break ; case GF_KEY_DOWN : if ( ( evt -> key . flags & VK_MOD ) && is_connected ) { do_set_speed ( playback_speed / 2 ) ; } break ; case GF_KEY_LEFT : if ( ( evt -> key . flags & VK_MOD ) && is_connected ) { do_set_speed ( - 1 * playback_speed ) ; } break ; } break ; case GF_EVENT_CONNECT : if ( evt -> connect . is_connected ) { is_connected = 1 ; fprintf ( stderr , \"Service<S2SV_blank>Connected\\\\n\" ) ; eos_seen = GF_FALSE ; if ( playback_speed != FIX_ONE ) gf_term_set_speed ( term , playback_speed ) ; } else if ( is_connected ) { fprintf ( stderr , \"Service<S2SV_blank>%s\\\\n\" , is_connected ? \"Disconnected\" : \"Connection<S2SV_blank>Failed\" ) ; is_connected = 0 ; Duration = 0 ; } if ( init_w && init_h ) { gf_term_set_size ( term , init_w , init_h ) ; } ResetCaption ( ) ; break ; case GF_EVENT_EOS : eos_seen = GF_TRUE ; if ( playlist ) { if ( Duration > 1500 ) request_next_playlist_item = GF_TRUE ; } else if ( loop_at_end ) { restart = 1 ; } break ; case GF_EVENT_SIZE : if ( user . init_flags & GF_TERM_WINDOWLESS ) { GF_Event move ; move . type = GF_EVENT_MOVE ; move . move . align_x = align_mode & 0xFF ; move . move . align_y = ( align_mode >> 8 ) & 0xFF ; move . move . relative = 2 ; gf_term_user_event ( term , & move ) ; } break ; case GF_EVENT_SCENE_SIZE : if ( forced_width && forced_height ) { GF_Event size ; size . type = GF_EVENT_SIZE ; size . size . width = forced_width ; size . size . height = forced_height ; gf_term_user_event ( term , & size ) ; } break ; case GF_EVENT_METADATA : ResetCaption ( ) ; break ; case GF_EVENT_RELOAD : if ( is_connected ) reload = 1 ; break ; case GF_EVENT_DROPFILE : { u32 i , pos ; if ( readonly_playlist ) { gf_fclose ( playlist ) ; playlist = NULL ; } readonly_playlist = 0 ; if ( ! playlist ) { readonly_playlist = 0 ; playlist = gf_temp_file_new ( NULL ) ; } pos = ftell ( playlist ) ; i = 0 ; while ( i < evt -> open_file . nb_files ) { if ( evt -> open_file . files [ i ] != NULL ) { fprintf ( playlist , \"%s\\\\n\" , evt -> open_file . files [ i ] ) ; } i ++ ; } fseek ( playlist , pos , SEEK_SET ) ; request_next_playlist_item = 1 ; } return 1 ; case GF_EVENT_QUIT : if ( evt -> message . error ) { fprintf ( stderr , \"A<S2SV_blank>fatal<S2SV_blank>error<S2SV_blank>was<S2SV_blank>encoutered:<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>-<S2SV_blank>exiting<S2SV_blank>...\\\\n\" , evt -> message . message ? evt -> message . message : \"no<S2SV_blank>details\" , gf_error_to_string ( evt -> message . error ) ) ; } Run = 0 ; break ; case GF_EVENT_DISCONNECT : gf_term_disconnect ( term ) ; break ; case GF_EVENT_MIGRATE : { } break ; case GF_EVENT_NAVIGATE_INFO : if ( evt -> navigate . to_url ) fprintf ( stderr , \"Go<S2SV_blank>to<S2SV_blank>URL:<S2SV_blank>\\\\\"%s\\\\\"\\\\r\" , evt -> navigate . to_url ) ; break ; case GF_EVENT_NAVIGATE : if ( gf_term_is_supported_url ( term , evt -> navigate . to_url , 1 , no_mime_check ) ) { <S2SV_StartBug> strcpy ( the_url , evt -> navigate . to_url ) ; <S2SV_EndBug> fprintf ( stderr , \"Navigating<S2SV_blank>to<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_navigate_to ( term , evt -> navigate . to_url ) ; return 1 ; } else { fprintf ( stderr , \"Navigation<S2SV_blank>destination<S2SV_blank>not<S2SV_blank>supported\\\\nGo<S2SV_blank>to<S2SV_blank>URL:<S2SV_blank>%s\\\\n\" , evt -> navigate . to_url ) ; } break ; case GF_EVENT_SET_CAPTION : gf_term_user_event ( term , evt ) ; break ; case GF_EVENT_AUTHORIZATION : { int maxTries = 1 ; assert ( evt -> type == GF_EVENT_AUTHORIZATION ) ; assert ( evt -> auth . user ) ; assert ( evt -> auth . password ) ; assert ( evt -> auth . site_url ) ; while ( ( ! strlen ( evt -> auth . user ) || ! strlen ( evt -> auth . password ) ) && ( maxTries -- ) >= 0 ) { fprintf ( stderr , \"****<S2SV_blank>Authorization<S2SV_blank>required<S2SV_blank>for<S2SV_blank>site<S2SV_blank>%s<S2SV_blank>****\\\\n\" , evt -> auth . site_url ) ; fprintf ( stderr , \"login<S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>\" ) ; read_line_input ( evt -> auth . user , 50 , 1 ) ; fprintf ( stderr , \"\\\\npassword:<S2SV_blank>\" ) ; read_line_input ( evt -> auth . password , 50 , 0 ) ; fprintf ( stderr , \"*********\\\\n\" ) ; } if ( maxTries < 0 ) { fprintf ( stderr , \"****<S2SV_blank>No<S2SV_blank>User<S2SV_blank>or<S2SV_blank>password<S2SV_blank>has<S2SV_blank>been<S2SV_blank>filled,<S2SV_blank>aborting<S2SV_blank>***\\\\n\" ) ; return 0 ; } return 1 ; } case GF_EVENT_ADDON_DETECTED : if ( enable_add_ons ) { fprintf ( stderr , \"Media<S2SV_blank>Addon<S2SV_blank>%s<S2SV_blank>detected<S2SV_blank>-<S2SV_blank>enabling<S2SV_blank>it\\\\n\" , evt -> addon_connect . addon_url ) ; addon_visible = 1 ; } return enable_add_ons ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { strncpy <S2SV_ModEnd> ( the_url , <S2SV_ModStart> navigate . to_url , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_url ) - 1 ] = 0 <S2SV_ModEnd> ; fprintf (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9436\n\n```\nCWE-20 struct parsed_tag * parse_tag ( char * * s , int internal ) { struct parsed_tag * tag = NULL ; int tag_id ; char tagname [ MAX_TAG_LEN ] , attrname [ MAX_TAG_LEN ] ; char * p , * q ; <S2SV_StartBug> int i , attr_id = 0 , nattr ; <S2SV_EndBug> q = ( * s ) + 1 ; p = tagname ; if ( * q == '/' ) { * ( p ++ ) = * ( q ++ ) ; SKIP_BLANKS ( q ) ; } while ( * q && ! IS_SPACE ( * q ) && ! ( tagname [ 0 ] != '/' && * q == '/' ) && * q != '>' && p - tagname < MAX_TAG_LEN - 1 ) { * ( p ++ ) = TOLOWER ( * q ) ; q ++ ; } * p = '\\\\0' ; while ( * q && ! IS_SPACE ( * q ) && ! ( tagname [ 0 ] != '/' && * q == '/' ) && * q != '>' ) q ++ ; tag_id = getHash_si ( & tagtable , tagname , HTML_UNKNOWN ) ; if ( tag_id == HTML_UNKNOWN || ( ! internal && TagMAP [ tag_id ] . flag & TFLG_INT ) ) goto skip_parse_tagarg ; tag = New ( struct parsed_tag ) ; bzero ( tag , sizeof ( struct parsed_tag ) ) ; tag -> tagid = tag_id ; if ( ( nattr = TagMAP [ tag_id ] . max_attribute ) > 0 ) { tag -> attrid = NewAtom_N ( unsigned char , nattr ) ; tag -> value = New_N ( char * , nattr ) ; tag -> map = NewAtom_N ( unsigned char , MAX_TAGATTR ) ; memset ( tag -> map , MAX_TAGATTR , MAX_TAGATTR ) ; memset ( tag -> attrid , ATTR_UNKNOWN , nattr ) ; for ( i = 0 ; i < nattr ; i ++ ) tag -> map [ TagMAP [ tag_id ] . accept_attribute [ i ] ] = i ; } SKIP_BLANKS ( q ) ; while ( 1 ) { Str value = NULL , value_tmp = NULL ; if ( * q == '>' || * q == '\\\\0' ) goto done_parse_tag ; p = attrname ; while ( * q && * q != '=' && ! IS_SPACE ( * q ) && * q != '>' && p - attrname < MAX_TAG_LEN - 1 ) { * ( p ++ ) = TOLOWER ( * q ) ; q ++ ; } * p = '\\\\0' ; while ( * q && * q != '=' && ! IS_SPACE ( * q ) && * q != '>' ) q ++ ; SKIP_BLANKS ( q ) ; if ( * q == '=' ) { value_tmp = Strnew ( ) ; q ++ ; SKIP_BLANKS ( q ) ; if ( * q == \\'\"\\' ) { q ++ ; while ( * q && * q != \\'\"\\' ) { Strcat_char ( value_tmp , * q ) ; if ( ! tag -> need_reconstruct && is_html_quote ( * q ) ) tag -> need_reconstruct = TRUE ; q ++ ; } if ( * q == \\'\"\\' ) q ++ ; } else if ( * q == '\\\\'' ) { q ++ ; while ( * q && * q != '\\\\'' ) { Strcat_char ( value_tmp , * q ) ; if ( ! tag -> need_reconstruct && is_html_quote ( * q ) ) tag -> need_reconstruct = TRUE ; q ++ ; } if ( * q == '\\\\'' ) q ++ ; } else if ( * q ) { while ( * q && ! IS_SPACE ( * q ) && * q != '>' ) { Strcat_char ( value_tmp , * q ) ; if ( ! tag -> need_reconstruct && is_html_quote ( * q ) ) tag -> need_reconstruct = TRUE ; q ++ ; } } } for ( i = 0 ; i < nattr ; i ++ ) { if ( ( tag ) -> attrid [ i ] == ATTR_UNKNOWN && strcmp ( AttrMAP [ TagMAP [ tag_id ] . accept_attribute [ i ] ] . name , attrname ) == 0 ) { attr_id = TagMAP [ tag_id ] . accept_attribute [ i ] ; break ; } } if ( value_tmp ) { int j , hidden = FALSE ; for ( j = 0 ; j < i ; j ++ ) { if ( tag -> attrid [ j ] == ATTR_TYPE && tag -> value [ j ] && strcmp ( \"hidden\" , tag -> value [ j ] ) == 0 ) { hidden = TRUE ; break ; } } if ( ( tag_id == HTML_INPUT || tag_id == HTML_INPUT_ALT ) && attr_id == ATTR_VALUE && hidden ) { value = value_tmp ; } else { char * x ; value = Strnew ( ) ; for ( x = value_tmp -> ptr ; * x ; x ++ ) { if ( * x != '\\\\n' ) Strcat_char ( value , * x ) ; } } } if ( i != nattr ) { if ( ! internal && ( ( AttrMAP [ attr_id ] . flag & AFLG_INT ) || ( value && AttrMAP [ attr_id ] . vtype == VTYPE_METHOD && ! strcasecmp ( value -> ptr , \"internal\" ) ) ) ) { tag -> need_reconstruct = TRUE ; continue ; } tag -> attrid [ i ] = attr_id ; if ( value ) tag -> value [ i ] = html_unquote ( value -> ptr ) ; else tag -> value [ i ] = NULL ; } else { tag -> need_reconstruct = TRUE ; } } skip_parse_tagarg : while ( * q != '>' && * q ) q ++ ; done_parse_tag : if ( * q == '>' ) q ++ ; * s = q ; return tag ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 , nattr ; tagname [ 0 ] = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11089\n\n```\nCWE-125 static UINT serial_process_irp_write ( SERIAL_DEVICE * serial , IRP * irp ) { UINT32 Length ; UINT64 Offset ; <S2SV_StartBug> DWORD nbWritten = 0 ; <S2SV_EndBug> if ( Stream_GetRemainingLength ( irp -> input ) < 32 ) return ERROR_INVALID_DATA ; Stream_Read_UINT32 ( irp -> input , Length ) ; Stream_Read_UINT64 ( irp -> input , Offset ) ; <S2SV_StartBug> Stream_Seek ( irp -> input , 20 ) ; <S2SV_EndBug> WLog_Print ( serial -> log , WLOG_DEBUG , \"writing<S2SV_blank>%\" PRIu32 \"<S2SV_blank>bytes<S2SV_blank>to<S2SV_blank>%s\" , Length , serial -> device . name ) ; <S2SV_StartBug> if ( CommWriteFile ( serial -> hComm , Stream_Pointer ( irp -> input ) , Length , & nbWritten , NULL ) ) <S2SV_EndBug> { irp -> IoStatus = STATUS_SUCCESS ; } else { WLog_Print ( serial -> log , WLOG_DEBUG , \"write<S2SV_blank>failure<S2SV_blank>to<S2SV_blank>%s,<S2SV_blank>nbWritten=%\" PRIu32 \",<S2SV_blank>last-error:<S2SV_blank>0x%08\" PRIX32 \"\" , serial -> device . name , nbWritten , GetLastError ( ) ) ; irp -> IoStatus = _GetLastErrorToIoStatus ( serial ) ; } WLog_Print ( serial -> log , WLOG_DEBUG , \"%\" PRIu32 \"<S2SV_blank>bytes<S2SV_blank>written<S2SV_blank>to<S2SV_blank>%s\" , nbWritten , serial -> device . name ) ; Stream_Write_UINT32 ( irp -> output , nbWritten ) ; Stream_Write_UINT8 ( irp -> output , 0 ) ; return CHANNEL_RC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> UINT64 Offset ; void * ptr ; <S2SV_ModStart> Offset ) ; if ( ! Stream_SafeSeek <S2SV_ModEnd> ( irp -> <S2SV_ModStart> , 20 ) ) return ERROR_INVALID_DATA <S2SV_ModStart> name ) ; ptr = Stream_Pointer ( irp -> input ) ; if ( ! Stream_SafeSeek ( irp -> input , Length ) ) return ERROR_INVALID_DATA ; <S2SV_ModStart> -> hComm , ptr <S2SV_ModEnd> , Length ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static void seamless_process ( STREAM s ) { unsigned int pkglen ; <S2SV_StartBug> char * buf ; <S2SV_EndBug> pkglen = s -> end - s -> p ; buf = xmalloc ( pkglen + 1 ) ; STRNCPY ( buf , ( char * ) s -> p , pkglen + 1 ) ; str_handle_lines ( buf , & seamless_rest , seamless_line_handler , NULL ) ; xfree ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * buf ; struct stream packet = * s ; if ( ! s_check ( s ) ) { rdp_protocol_error ( \"seamless_process(),<S2SV_blank>stream<S2SV_blank>is<S2SV_blank>in<S2SV_blank>unstable<S2SV_blank>state\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int http_open ( URLContext * h , const char * uri , int flags , AVDictionary * * options ) { HTTPContext * s = h -> priv_data ; int ret ; if ( s -> seekable == 1 ) h -> is_streamed = 0 ; else h -> is_streamed = 1 ; <S2SV_StartBug> s -> filesize = - 1 ; <S2SV_EndBug> s -> location = av_strdup ( uri ) ; if ( ! s -> location ) return AVERROR ( ENOMEM ) ; if ( options ) av_dict_copy ( & s -> chained_options , * options , 0 ) ; if ( s -> headers ) { int len = strlen ( s -> headers ) ; if ( len < 2 || strcmp ( \"\\\\r\\\\n\" , s -> headers + len - 2 ) ) { av_log ( h , AV_LOG_WARNING , \"No<S2SV_blank>trailing<S2SV_blank>CRLF<S2SV_blank>found<S2SV_blank>in<S2SV_blank>HTTP<S2SV_blank>header.\\\\n\" ) ; ret = av_reallocp ( & s -> headers , len + 3 ) ; if ( ret < 0 ) return ret ; s -> headers [ len ] = '\\\\r' ; s -> headers [ len + 1 ] = '\\\\n' ; s -> headers [ len + 2 ] = '\\\\0' ; } } if ( s -> listen ) { return http_listen ( h , uri , flags , options ) ; } ret = http_open_cnx ( h , options ) ; if ( ret < 0 ) av_dict_free ( & s -> chained_options ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> filesize = UINT64_MAX <S2SV_ModEnd> ; s ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 struct sock * cookie_v6_check ( struct sock * sk , struct sk_buff * skb ) { struct tcp_options_received tcp_opt ; struct inet_request_sock * ireq ; struct tcp_request_sock * treq ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct tcp_sock * tp = tcp_sk ( sk ) ; const struct tcphdr * th = tcp_hdr ( skb ) ; __u32 cookie = ntohl ( th -> ack_seq ) - 1 ; struct sock * ret = sk ; struct request_sock * req ; int mss ; struct dst_entry * dst ; __u8 rcv_wscale ; if ( ! sysctl_tcp_syncookies || ! th -> ack || th -> rst ) goto out ; if ( tcp_synq_no_recent_overflow ( sk ) ) goto out ; mss = __cookie_v6_check ( ipv6_hdr ( skb ) , th , cookie ) ; if ( mss == 0 ) { NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_SYNCOOKIESFAILED ) ; goto out ; } NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_SYNCOOKIESRECV ) ; memset ( & tcp_opt , 0 , sizeof ( tcp_opt ) ) ; tcp_parse_options ( skb , & tcp_opt , 0 , NULL ) ; if ( ! cookie_timestamp_decode ( & tcp_opt ) ) goto out ; ret = NULL ; req = inet_reqsk_alloc ( & tcp6_request_sock_ops , sk , false ) ; if ( ! req ) goto out ; ireq = inet_rsk ( req ) ; treq = tcp_rsk ( req ) ; treq -> tfo_listener = false ; if ( security_inet_conn_request ( sk , skb , req ) ) goto out_free ; req -> mss = mss ; ireq -> ir_rmt_port = th -> source ; ireq -> ir_num = ntohs ( th -> dest ) ; ireq -> ir_v6_rmt_addr = ipv6_hdr ( skb ) -> saddr ; ireq -> ir_v6_loc_addr = ipv6_hdr ( skb ) -> daddr ; if ( ipv6_opt_accepted ( sk , skb , & TCP_SKB_CB ( skb ) -> header . h6 ) || np -> rxopt . bits . rxinfo || np -> rxopt . bits . rxoinfo || np -> rxopt . bits . rxhlim || np -> rxopt . bits . rxohlim ) { atomic_inc ( & skb -> users ) ; ireq -> pktopts = skb ; } ireq -> ir_iif = sk -> sk_bound_dev_if ; if ( ! sk -> sk_bound_dev_if && ipv6_addr_type ( & ireq -> ir_v6_rmt_addr ) & IPV6_ADDR_LINKLOCAL ) ireq -> ir_iif = tcp_v6_iif ( skb ) ; ireq -> ir_mark = inet_request_mark ( sk , skb ) ; req -> num_retrans = 0 ; ireq -> snd_wscale = tcp_opt . snd_wscale ; ireq -> sack_ok = tcp_opt . sack_ok ; ireq -> wscale_ok = tcp_opt . wscale_ok ; ireq -> tstamp_ok = tcp_opt . saw_tstamp ; req -> ts_recent = tcp_opt . saw_tstamp ? tcp_opt . rcv_tsval : 0 ; treq -> snt_synack . v64 = 0 ; treq -> rcv_isn = ntohl ( th -> seq ) - 1 ; treq -> snt_isn = cookie ; { struct in6_addr * final_p , final ; struct flowi6 fl6 ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_proto = IPPROTO_TCP ; fl6 . daddr = ireq -> ir_v6_rmt_addr ; <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , np -> opt , & final ) ; <S2SV_EndBug> fl6 . saddr = ireq -> ir_v6_loc_addr ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . flowi6_mark = ireq -> ir_mark ; fl6 . fl6_dport = ireq -> ir_rmt_port ; fl6 . fl6_sport = inet_sk ( sk ) -> inet_sport ; security_req_classify_flow ( req , flowi6_to_flowi ( & fl6 ) ) ; dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) goto out_free ; } req -> rsk_window_clamp = tp -> window_clamp ? : dst_metric ( dst , RTAX_WINDOW ) ; tcp_select_initial_window ( tcp_full_space ( sk ) , req -> mss , & req -> rsk_rcv_wnd , & req -> rsk_window_clamp , ireq -> wscale_ok , & rcv_wscale , dst_metric ( dst , RTAX_INITRWND ) ) ; ireq -> rcv_wscale = rcv_wscale ; ireq -> ecn_ok = cookie_ecn_ok ( & tcp_opt , sock_net ( sk ) , dst ) ; ret = tcp_get_cookie_sock ( sk , skb , req , dst ) ; out : return ret ; out_free : reqsk_free ( req ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-4648\n\n```\nCWE-000 static int orinoco_ioctl_set_auth ( struct net_device * dev , struct iw_request_info * info , union iwreq_data * wrqu , char * extra ) { struct orinoco_private * priv = ndev_priv ( dev ) ; hermes_t * hw = & priv -> hw ; struct iw_param * param = & wrqu -> param ; unsigned long flags ; int ret = - EINPROGRESS ; if ( orinoco_lock ( priv , & flags ) != 0 ) return - EBUSY ; switch ( param -> flags & IW_AUTH_INDEX ) { case IW_AUTH_WPA_VERSION : case IW_AUTH_CIPHER_PAIRWISE : case IW_AUTH_CIPHER_GROUP : case IW_AUTH_RX_UNENCRYPTED_EAPOL : case IW_AUTH_PRIVACY_INVOKED : case IW_AUTH_DROP_UNENCRYPTED : break ; case IW_AUTH_KEY_MGMT : priv -> key_mgmt = param -> value ; break ; case IW_AUTH_TKIP_COUNTERMEASURES : if ( param -> value ) { priv -> tkip_cm_active = 1 ; <S2SV_StartBug> ret = hermes_enable_port ( hw , 0 ) ; <S2SV_EndBug> } else { priv -> tkip_cm_active = 0 ; ret = hermes_disable_port ( hw , 0 ) ; } break ; case IW_AUTH_80211_AUTH_ALG : if ( param -> value & IW_AUTH_ALG_SHARED_KEY ) priv -> wep_restrict = 1 ; else if ( param -> value & IW_AUTH_ALG_OPEN_SYSTEM ) priv -> wep_restrict = 0 ; else ret = - EINVAL ; break ; case IW_AUTH_WPA_ENABLED : if ( priv -> has_wpa ) { priv -> wpa_enabled = param -> value ? 1 : 0 ; } else { if ( param -> value ) ret = - EOPNOTSUPP ; priv -> wpa_enabled = 0 ; } break ; default : ret = - EOPNOTSUPP ; } orinoco_unlock ( priv , & flags ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ret = hermes_disable_port ( hw , 0 ) ; } else { priv -> tkip_cm_active = 0 ; ret = hermes_enable_port <S2SV_ModEnd> ( hw ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void write_tile_info ( VP9_COMMON * cm , struct vp9_write_bit_buffer * wb ) { <S2SV_EndBug> int min_log2_tile_cols , max_log2_tile_cols , ones ; vp9_get_tile_n_bits ( cm -> mi_cols , & min_log2_tile_cols , & max_log2_tile_cols ) ; ones = cm -> log2_tile_cols - min_log2_tile_cols ; while ( ones -- ) <S2SV_StartBug> vp9_wb_write_bit ( wb , 1 ) ; <S2SV_EndBug> if ( cm -> log2_tile_cols < max_log2_tile_cols ) <S2SV_StartBug> vp9_wb_write_bit ( wb , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_bit ( wb , cm -> log2_tile_rows != 0 ) ; <S2SV_EndBug> if ( cm -> log2_tile_rows != 0 ) <S2SV_StartBug> vp9_wb_write_bit ( wb , cm -> log2_tile_rows != 1 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void write_tile_info ( const VP9_COMMON * const <S2SV_ModEnd> cm , struct <S2SV_ModStart> cm , struct vpx_write_bit_buffer <S2SV_ModEnd> * wb ) <S2SV_ModStart> ones -- ) vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> < max_log2_tile_cols ) vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> 0 ) ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> != 0 ) vpx_wb_write_bit <S2SV_ModEnd> ( wb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 int udpv6_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; int is_udplite = IS_UDPLITE ( sk ) ; int is_udp4 ; <S2SV_StartBug> bool slow ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( struct sockaddr_in6 ) ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len ) ; if ( np -> rxpmtu && np -> rxopt . bits . rxpmtu ) return ipv6_recv_rxpmtu ( sk , msg , len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; is_udp4 = ( skb -> protocol == htons ( ETH_P_IP ) ) ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { if ( udp_lib_checksum_complete ( skb ) ) goto csum_copy_err ; } if ( skb_csum_unnecessary ( skb ) ) err = skb_copy_datagram_iovec ( skb , sizeof ( struct udphdr ) , msg -> msg_iov , copied ) ; else { err = skb_copy_and_csum_datagram_iovec ( skb , sizeof ( struct udphdr ) , msg -> msg_iov ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udpv6_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) { if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; } sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( msg -> msg_name ) { struct sockaddr_in6 * sin6 ; sin6 = ( struct sockaddr_in6 * ) msg -> msg_name ; sin6 -> sin6_family = AF_INET6 ; sin6 -> sin6_port = udp_hdr ( skb ) -> source ; sin6 -> sin6_flowinfo = 0 ; if ( is_udp4 ) { ipv6_addr_set_v4mapped ( ip_hdr ( skb ) -> saddr , & sin6 -> sin6_addr ) ; sin6 -> sin6_scope_id = 0 ; } else { sin6 -> sin6_addr = ipv6_hdr ( skb ) -> saddr ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , IP6CB ( skb ) -> iif ) ; } <S2SV_StartBug> } <S2SV_EndBug> if ( is_udp4 ) { if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; } else { if ( np -> rxopt . all ) ip6_datagram_recv_ctl ( sk , msg , skb ) ; } err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { if ( is_udp4 ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } else { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } } unlock_sock_fast ( sk , slow ) ; if ( noblock ) return - EAGAIN ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bool slow <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ; } * addr_len = sizeof ( * sin6 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7480\n\n```\nCWE-119 SPL_METHOD ( SplObjectStorage , unserialize ) { spl_SplObjectStorage * intern = Z_SPLOBJSTORAGE_P ( getThis ( ) ) ; char * buf ; size_t buf_len ; const unsigned char * p , * s ; php_unserialize_data_t var_hash ; zval entry , inf ; zval * pcount , * pmembers ; spl_SplObjectStorageElement * element ; zend_long count ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) , \"s\" , & buf , & buf_len ) == FAILURE ) { return ; } if ( buf_len == 0 ) { return ; } s = p = ( const unsigned char * ) buf ; PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; if ( * p != 'x' || * ++ p != ':' ) { goto outexcept ; } ++ p ; pcount = var_tmp_var ( & var_hash ) ; if ( ! php_var_unserialize ( pcount , & p , s + buf_len , & var_hash ) || Z_TYPE_P ( pcount ) != IS_LONG ) { goto outexcept ; } -- p ; <S2SV_StartBug> count = Z_LVAL_P ( pcount ) ; <S2SV_EndBug> while ( count -- > 0 ) { spl_SplObjectStorageElement * pelement ; zend_string * hash ; if ( * p != ';' ) { goto outexcept ; } ++ p ; if ( * p != 'O' && * p != 'C' && * p != 'r' ) { goto outexcept ; } if ( ! php_var_unserialize ( & entry , & p , s + buf_len , & var_hash ) ) { goto outexcept ; } <S2SV_StartBug> if ( Z_TYPE ( entry ) != IS_OBJECT ) { <S2SV_EndBug> zval_ptr_dtor ( & entry ) ; goto outexcept ; } if ( * p == ',' ) { ++ p ; if ( ! php_var_unserialize ( & inf , & p , s + buf_len , & var_hash ) ) { zval_ptr_dtor ( & entry ) ; goto outexcept ; } <S2SV_StartBug> } else { <S2SV_EndBug> ZVAL_UNDEF ( & inf ) ; } hash = spl_object_storage_get_hash ( intern , getThis ( ) , & entry ) ; if ( ! hash ) { zval_ptr_dtor ( & entry ) ; zval_ptr_dtor ( & inf ) ; goto outexcept ; } pelement = spl_object_storage_get ( intern , hash ) ; spl_object_storage_free_hash ( intern , hash ) ; if ( pelement ) { if ( ! Z_ISUNDEF ( pelement -> inf ) ) { var_push_dtor ( & var_hash , & pelement -> inf ) ; } if ( ! Z_ISUNDEF ( pelement -> obj ) ) { var_push_dtor ( & var_hash , & pelement -> obj ) ; } } element = spl_object_storage_attach ( intern , getThis ( ) , & entry , Z_ISUNDEF ( inf ) ? NULL : & inf ) ; var_replace ( & var_hash , & entry , & element -> obj ) ; var_replace ( & var_hash , & inf , & element -> inf ) ; zval_ptr_dtor ( & entry ) ; ZVAL_UNDEF ( & entry ) ; zval_ptr_dtor ( & inf ) ; ZVAL_UNDEF ( & inf ) ; } if ( * p != ';' ) { goto outexcept ; } ++ p ; if ( * p != 'm' || * ++ p != ':' ) { goto outexcept ; } ++ p ; pmembers = var_tmp_var ( & var_hash ) ; if ( ! php_var_unserialize ( pmembers , & p , s + buf_len , & var_hash ) || Z_TYPE_P ( pmembers ) != IS_ARRAY ) { goto outexcept ; } object_properties_load ( & intern -> std , Z_ARRVAL_P ( pmembers ) ) ; PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return ; outexcept : PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; zend_throw_exception_ex ( spl_ce_UnexpectedValueException , 0 , \"Error<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%pd<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , ( zend_long ) ( ( char * ) p - buf ) , buf_len ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Z_LVAL_P ( pcount ) ; ZVAL_UNDEF ( & entry ) ; ZVAL_UNDEF ( & inf <S2SV_ModStart> } if ( <S2SV_ModEnd> * p == <S2SV_ModStart> ; } } if ( Z_TYPE ( entry ) != IS_OBJECT ) { zval_ptr_dtor ( & entry ) ; zval_ptr_dtor ( & inf ) ; goto outexcept <S2SV_ModEnd> ; } hash\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7376\n\n```\nCWE-119 static int xmlParse3986Port ( xmlURIPtr uri , const char * * str ) { const char * cur = * str ; unsigned port = 0 ; if ( ISA_DIGIT ( cur ) ) { while ( ISA_DIGIT ( cur ) ) { port = port * 10 + ( * cur - '0' ) ; cur ++ ; } if ( uri != NULL ) <S2SV_StartBug> uri -> port = port & INT_MAX ; <S2SV_EndBug> * str = cur ; return ( 0 ) ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = port & USHRT_MAX <S2SV_ModEnd> ; * str\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4805\n\n```\nCWE-416 int ppp_register_net_channel ( struct net * net , struct ppp_channel * chan ) { struct channel * pch ; struct ppp_net * pn ; pch = kzalloc ( sizeof ( struct channel ) , GFP_KERNEL ) ; if ( ! pch ) return - ENOMEM ; pn = ppp_pernet ( net ) ; pch -> ppp = NULL ; pch -> chan = chan ; <S2SV_StartBug> pch -> chan_net = net ; <S2SV_EndBug> chan -> ppp = pch ; init_ppp_file ( & pch -> file , CHANNEL ) ; pch -> file . hdrlen = chan -> hdrlen ; # ifdef CONFIG_PPP_MULTILINK pch -> lastseq = - 1 ; # endif init_rwsem ( & pch -> chan_sem ) ; spin_lock_init ( & pch -> downl ) ; rwlock_init ( & pch -> upl ) ; spin_lock_bh ( & pn -> all_channels_lock ) ; pch -> file . index = ++ pn -> last_channel_index ; list_add ( & pch -> list , & pn -> new_channels ) ; atomic_inc ( & channel_count ) ; spin_unlock_bh ( & pn -> all_channels_lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> chan_net = get_net ( net ) <S2SV_ModEnd> ; chan ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5094\n\n```\nCWE-190 static void php_html_entities ( INTERNAL_FUNCTION_PARAMETERS , int all ) { char * str , * hint_charset = NULL ; int str_len , hint_charset_len = 0 ; size_t new_len ; long flags = ENT_COMPAT ; char * replaced ; zend_bool double_encode = 1 ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"s|ls!b\" , & str , & str_len , & flags , & hint_charset , & hint_charset_len , & double_encode ) == FAILURE ) { return ; } replaced = php_escape_html_entities_ex ( str , str_len , & new_len , all , ( int ) flags , hint_charset , double_encode TSRMLS_CC ) ; <S2SV_StartBug> RETVAL_STRINGL ( replaced , ( int ) new_len , 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TSRMLS_CC ) ; if ( new_len > INT_MAX ) { efree ( replaced ) ; RETURN_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-4648\n\n```\nCWE-000 static int orinoco_ioctl_set_auth ( struct net_device * dev , struct iw_request_info * info , union iwreq_data * wrqu , char * extra ) { struct orinoco_private * priv = ndev_priv ( dev ) ; hermes_t * hw = & priv -> hw ; struct iw_param * param = & wrqu -> param ; unsigned long flags ; int ret = - EINPROGRESS ; if ( orinoco_lock ( priv , & flags ) != 0 ) return - EBUSY ; switch ( param -> flags & IW_AUTH_INDEX ) { case IW_AUTH_WPA_VERSION : case IW_AUTH_CIPHER_PAIRWISE : case IW_AUTH_CIPHER_GROUP : case IW_AUTH_RX_UNENCRYPTED_EAPOL : case IW_AUTH_PRIVACY_INVOKED : case IW_AUTH_DROP_UNENCRYPTED : break ; case IW_AUTH_KEY_MGMT : priv -> key_mgmt = param -> value ; break ; case IW_AUTH_TKIP_COUNTERMEASURES : if ( param -> value ) { priv -> tkip_cm_active = 1 ; <S2SV_StartBug> ret = hermes_enable_port ( hw , 0 ) ; <S2SV_EndBug> } else { priv -> tkip_cm_active = 0 ; ret = hermes_disable_port ( hw , 0 ) ; } break ; case IW_AUTH_80211_AUTH_ALG : if ( param -> value & IW_AUTH_ALG_SHARED_KEY ) priv -> wep_restrict = 1 ; else if ( param -> value & IW_AUTH_ALG_OPEN_SYSTEM ) priv -> wep_restrict = 0 ; else ret = - EINVAL ; break ; case IW_AUTH_WPA_ENABLED : if ( priv -> has_wpa ) { priv -> wpa_enabled = param -> value ? 1 : 0 ; } else { if ( param -> value ) ret = - EOPNOTSUPP ; priv -> wpa_enabled = 0 ; } break ; default : ret = - EOPNOTSUPP ; } orinoco_unlock ( priv , & flags ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ret = hermes_disable_port ( hw , 0 ) ; } else { priv -> tkip_cm_active = 0 ; ret = hermes_enable_port <S2SV_ModEnd> ( hw ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 void options_apply ( ) { unsigned num = 0 ; SERVICE_OPTIONS * section ; CRYPTO_THREAD_write_lock ( stunnel_locks [ LOCK_SECTIONS ] ) ; <S2SV_StartBug> memcpy ( & global_options , & new_global_options , sizeof ( GLOBAL_OPTIONS ) ) ; <S2SV_EndBug> for ( section = new_service_options . next ; section ; section = section -> next ) section -> section_number = num ++ ; memcpy ( & service_options , & new_service_options , sizeof ( SERVICE_OPTIONS ) ) ; <S2SV_StartBug> number_of_sections = num ; <S2SV_EndBug> CRYPTO_THREAD_unlock ( stunnel_locks [ LOCK_SECTIONS ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , & new_global_options , sizeof ( GLOBAL_OPTIONS ) ) ; memset ( & new_global_options , 0 <S2SV_ModStart> ) ) ; memset ( & new_service_options , 0 , sizeof ( SERVICE_OPTIONS ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13046\n\n```\nCWE-125 static int bgp_attr_print ( netdissect_options * ndo , u_int atype , const u_char * pptr , u_int len ) { int i ; uint16_t af ; uint8_t safi , snpa , nhlen ; union { float f ; uint32_t i ; } bw ; int advance ; u_int tlen ; const u_char * tptr ; char buf [ MAXHOSTNAMELEN + 100 ] ; int as_size ; tptr = pptr ; tlen = len ; switch ( atype ) { case BGPTYPE_ORIGIN : if ( len != 1 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK ( * tptr ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_origin_values , \"Unknown<S2SV_blank>Origin<S2SV_blank>Typecode\" , tptr [ 0 ] ) ) ) ; } break ; case BGPTYPE_AS4_PATH : case BGPTYPE_AS_PATH : if ( len % 2 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } if ( ! len ) { ND_PRINT ( ( ndo , \"empty\" ) ) ; break ; } as_size = bgp_attr_get_as_size ( ndo , atype , pptr , len ) ; while ( tptr < pptr + len ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_open_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; for ( i = 0 ; i < tptr [ 1 ] * as_size ; i += as_size ) { ND_TCHECK2 ( tptr [ 2 + i ] , as_size ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , as_printf ( ndo , astostr , sizeof ( astostr ) , as_size == 2 ? EXTRACT_16BITS ( & tptr [ 2 + i ] ) : EXTRACT_32BITS ( & tptr [ 2 + i ] ) ) ) ) ; } ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_close_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; tptr += 2 + tptr [ 1 ] * as_size ; } break ; case BGPTYPE_NEXT_HOP : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; } break ; case BGPTYPE_MULTI_EXIT_DISC : case BGPTYPE_LOCAL_PREF : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( tptr ) ) ) ; } break ; case BGPTYPE_ATOMIC_AGGREGATE : if ( len != 0 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; case BGPTYPE_AGGREGATOR : if ( len != 6 && len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , len ) ; if ( len == 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_16BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 2 ) ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; } break ; case BGPTYPE_AGGREGATOR4 : if ( len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGPTYPE_COMMUNITIES : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint32_t comm ; ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; comm = EXTRACT_32BITS ( tptr ) ; switch ( comm ) { case BGP_COMMUNITY_NO_EXPORT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT\" ) ) ; break ; case BGP_COMMUNITY_NO_ADVERT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_ADVERTISE\" ) ) ; break ; case BGP_COMMUNITY_NO_EXPORT_SUBCONFED : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT_SUBCONFED\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%u:%u%s\" , ( comm >> 16 ) & 0xffff , comm & 0xffff , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; break ; } tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_ORIGINATOR_ID : if ( len != 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGPTYPE_CLUSTER_LIST : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s%s\" , ipaddr_string ( ndo , tptr ) , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_MP_REACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; goto done ; break ; } tptr += 3 ; ND_TCHECK ( tptr [ 0 ] ) ; nhlen = tptr [ 0 ] ; tlen = nhlen ; tptr ++ ; if ( tlen ) { int nnh = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>nexthop:<S2SV_blank>\" ) ) ; while ( tlen > 0 ) { if ( nnh ++ > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; } switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in_addr ) ; tptr += sizeof ( struct in_addr ) ; } break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : if ( tlen < ( int ) sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in6_addr ) ; tptr += sizeof ( struct in6_addr ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= ( sizeof ( struct in_addr ) ) ; tptr += ( sizeof ( struct in_addr ) ) ; } break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"%s\" , isonsap_string ( ndo , tptr , tlen ) ) ) ; tptr += tlen ; tlen = 0 ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < BGP_VPN_RD_LEN + 1 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , isonsap_string ( ndo , tptr + BGP_VPN_RD_LEN , tlen - BGP_VPN_RD_LEN ) ) ) ; if ( EXTRACT_32BITS ( tptr + BGP_VPN_RD_LEN ) == 0x47000601 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN + 4 ) ) ) ; else if ( EXTRACT_24BITS ( tptr + BGP_VPN_RD_LEN ) == 0x350000 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN + 3 ) ) ) ; tptr += tlen ; tlen = 0 ; } break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u/SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; tptr += tlen ; tlen = 0 ; goto done ; break ; } } } ND_PRINT ( ( ndo , \",<S2SV_blank>nh-length:<S2SV_blank>%u\" , nhlen ) ) ; tptr += tlen ; ND_TCHECK ( tptr [ 0 ] ) ; snpa = tptr [ 0 ] ; tptr ++ ; if ( snpa ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>SNPA\" , snpa ) ) ; for ( ; snpa > 0 ; snpa -- ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d<S2SV_blank>bytes\" , tptr [ 0 ] ) ) ; tptr += tptr [ 0 ] + 1 ; } } else { ND_PRINT ( ( ndo , \",<S2SV_blank>no<S2SV_blank>SNPA\" ) ) ; } while ( tptr < pptr + len ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : advance = decode_rt_routing_info ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * tptr , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } done : break ; case BGPTYPE_MP_UNREACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , BGP_MP_NLRI_MINSIZE ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; if ( len == BGP_MP_NLRI_MINSIZE ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>End-of-Rib<S2SV_blank>Marker<S2SV_blank>(empty<S2SV_blank>NLRI)\" ) ) ; tptr += 3 ; while ( tptr < pptr + len ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * ( tptr - 3 ) , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr - 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } break ; case BGPTYPE_EXTD_COMMUNITIES : if ( len % 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint16_t extd_comm ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; extd_comm = EXTRACT_16BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>Flags<S2SV_blank>[%s]\" , tok2str ( bgp_extd_comm_subtype_values , \"unknown<S2SV_blank>extd<S2SV_blank>community<S2SV_blank>typecode\" , extd_comm ) , extd_comm , bittok2str ( bgp_extd_comm_flag_values , \"none\" , extd_comm ) ) ) ; ND_TCHECK2 ( * ( tptr + 2 ) , 6 ) ; switch ( extd_comm ) { case BGP_EXT_COM_RT_0 : case BGP_EXT_COM_RO_0 : case BGP_EXT_COM_L2VPN_RT_0 : ND_PRINT ( ( ndo , \":<S2SV_blank>%u:%u<S2SV_blank>(=<S2SV_blank>%s)\" , EXTRACT_16BITS ( tptr + 2 ) , EXTRACT_32BITS ( tptr + 4 ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_RT_1 : case BGP_EXT_COM_RO_1 : case BGP_EXT_COM_L2VPN_RT_1 : case BGP_EXT_COM_VRF_RT_IMP : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , ipaddr_string ( ndo , tptr + 2 ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_RT_2 : case BGP_EXT_COM_RO_2 : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr + 2 ) ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_LINKBAND : bw . i = EXTRACT_32BITS ( tptr + 2 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case BGP_EXT_COM_VPN_ORIGIN : case BGP_EXT_COM_VPN_ORIGIN2 : case BGP_EXT_COM_VPN_ORIGIN3 : case BGP_EXT_COM_VPN_ORIGIN4 : case BGP_EXT_COM_OSPF_RID : case BGP_EXT_COM_OSPF_RID2 : ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr + 2 ) ) ) ; break ; case BGP_EXT_COM_OSPF_RTYPE : case BGP_EXT_COM_OSPF_RTYPE2 : ND_PRINT ( ( ndo , \":<S2SV_blank>area:%s,<S2SV_blank>router-type:%s,<S2SV_blank>metric-type:%s%s\" , ipaddr_string ( ndo , tptr + 2 ) , tok2str ( bgp_extd_comm_ospf_rtype_values , \"unknown<S2SV_blank>(0x%02x)\" , * ( tptr + 6 ) ) , ( * ( tptr + 7 ) & BGP_OSPF_RTYPE_METRIC_TYPE ) ? \"E2\" : \"\" , ( ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_EXT ) || ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_NSSA ) ) ? \"E1\" : \"\" ) ) ; break ; case BGP_EXT_COM_L2INFO : ND_PRINT ( ( ndo , \":<S2SV_blank>%s<S2SV_blank>Control<S2SV_blank>Flags<S2SV_blank>[0x%02x]:MTU<S2SV_blank>%u\" , tok2str ( l2vpn_encaps_values , \"unknown<S2SV_blank>encaps\" , * ( tptr + 2 ) ) , * ( tptr + 3 ) , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_SOURCE_AS : ND_PRINT ( ( ndo , \":<S2SV_blank>AS<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 2 ) ) ) ; break ; default : ND_TCHECK2 ( * tptr , 8 ) ; print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , 8 ) ; break ; } tlen -= 8 ; tptr += 8 ; } break ; case BGPTYPE_PMSI_TUNNEL : { uint8_t tunnel_type , flags ; <S2SV_StartBug> tunnel_type = * ( tptr + 1 ) ; <S2SV_EndBug> flags = * tptr ; <S2SV_StartBug> tlen = len ; <S2SV_EndBug> ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>MPLS<S2SV_blank>Label<S2SV_blank>%u\" , tok2str ( bgp_pmsi_tunnel_values , \"Unknown\" , tunnel_type ) , tunnel_type , bittok2str ( bgp_pmsi_flag_values , \"none\" , flags ) , EXTRACT_24BITS ( tptr + 2 ) >> 4 ) ) ; tptr += 5 ; tlen -= 5 ; switch ( tunnel_type ) { case BGP_PMSI_TUNNEL_PIM_SM : case BGP_PMSI_TUNNEL_PIM_BIDIR : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sender<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_PIM_SSM : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_INGRESS : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-Endpoint<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGP_PMSI_TUNNEL_LDP_P2MP : case BGP_PMSI_TUNNEL_LDP_MP2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>LSP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_RSVP_P2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended-Tunnel-ID<S2SV_blank>%s,<S2SV_blank>P2MP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; } } break ; } case BGPTYPE_AIGP : { uint8_t type ; uint16_t length ; tlen = len ; while ( tlen >= 3 ) { ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; type = * tptr ; length = EXTRACT_16BITS ( tptr + 1 ) ; tptr += 3 ; tlen -= 3 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( bgp_aigp_values , \"Unknown\" , type ) , type , length ) ) ; if ( length < 3 ) goto trunc ; length -= 3 ; ND_TCHECK2 ( tptr [ 3 ] , length ) ; switch ( type ) { case BGP_AIGP_TLV : if ( length < 8 ) goto trunc ; ND_PRINT ( ( ndo , \",<S2SV_blank>metric<S2SV_blank>%\" PRIu64 , EXTRACT_64BITS ( tptr ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length ) ; } } tptr += length ; tlen -= length ; } break ; } case BGPTYPE_ATTR_SET : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Origin<S2SV_blank>AS:<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) ) ) ; tptr += 4 ; len -= 4 ; while ( len ) { u_int aflags , alenlen , alen ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; if ( len < 2 ) goto trunc ; aflags = * tptr ; atype = * ( tptr + 1 ) ; tptr += 2 ; len -= 2 ; alenlen = bgp_attr_lenlen ( aflags , tptr ) ; ND_TCHECK2 ( tptr [ 0 ] , alenlen ) ; if ( len < alenlen ) goto trunc ; alen = bgp_attr_len ( aflags , tptr ) ; tptr += alenlen ; len -= alenlen ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_attr_values , \"Unknown<S2SV_blank>Attribute\" , atype ) , atype , alen ) ) ; if ( aflags ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s%s%s%s\" , aflags & 0x80 ? \"O\" : \"\" , aflags & 0x40 ? \"T\" : \"\" , aflags & 0x20 ? \"P\" : \"\" , aflags & 0x10 ? \"E\" : \"\" ) ) ; if ( aflags & 0xf ) ND_PRINT ( ( ndo , \"+%x\" , aflags & 0xf ) ) ; ND_PRINT ( ( ndo , \"]:<S2SV_blank>\" ) ) ; } if ( ! bgp_attr_print ( ndo , atype , tptr , alen ) ) return 0 ; tptr += alen ; len -= alen ; } break ; case BGPTYPE_LARGE_COMMUNITY : if ( len == 0 || len % 12 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; while ( len > 0 ) { ND_TCHECK2 ( * tptr , 12 ) ; ND_PRINT ( ( ndo , \"%u:%u:%u%s\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , ( len > 12 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tptr += 12 ; len -= 12 ; } break ; default : ND_TCHECK2 ( * pptr , len ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>Attribute<S2SV_blank>%u<S2SV_blank>decoder\" , atype ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; break ; } if ( ndo -> ndo_vflag > 1 && len ) { ND_TCHECK2 ( * pptr , len ) ; print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; } return 1 ; trunc : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , flags ; ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; <S2SV_ModStart> tlen = len <S2SV_ModEnd> ; ND_PRINT (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9732\n\n```\nCWE-400 void * gstd_accept ( int fd , char * * display_creds , char * * export_name , char * * mech ) { gss_name_t client ; gss_OID mech_oid ; struct gstd_tok * tok ; gss_ctx_id_t ctx = GSS_C_NO_CONTEXT ; gss_buffer_desc in , out ; OM_uint32 maj , min ; int ret ; * display_creds = NULL ; * export_name = NULL ; out . length = 0 ; in . length = 0 ; read_packet ( fd , & in , 60000 , 1 ) ; again : while ( ( ret = read_packet ( fd , & in , 60000 , 0 ) ) == - 2 ) ; if ( ret < 1 ) return NULL ; maj = gss_accept_sec_context ( & min , & ctx , GSS_C_NO_CREDENTIAL , & in , GSS_C_NO_CHANNEL_BINDINGS , & client , & mech_oid , & out , NULL , <S2SV_StartBug> NULL , NULL ) ; <S2SV_EndBug> if ( out . length && write_packet ( fd , & out ) ) { gss_release_buffer ( & min , & out ) ; return NULL ; } <S2SV_StartBug> GSTD_GSS_ERROR ( maj , min , NULL , \"gss_accept_sec_context\" ) ; <S2SV_EndBug> if ( maj & GSS_S_CONTINUE_NEEDED ) goto again ; * display_creds = gstd_get_display_name ( client ) ; * export_name = gstd_get_export_name ( client ) ; * mech = gstd_get_mech ( mech_oid ) ; gss_release_name ( & min , & client ) ; SETUP_GSTD_TOK ( tok , ctx , fd , \"gstd_accept\" ) ; return tok ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL , NULL ) ; gss_release_buffer ( & min , & in <S2SV_ModStart> NULL ; } gss_release_buffer ( & min , & out ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static void load_xref_from_plaintext ( FILE * fp , xref_t * xref ) { int i , buf_idx , obj_id , added_entries ; char c , buf [ 32 ] = { 0 } ; long start , pos ; start = ftell ( fp ) ; pos = xref -> end ; fseek ( fp , pos , SEEK_SET ) ; while ( ftell ( fp ) != 0 ) if ( SAFE_F ( fp , ( fgetc ( fp ) == '/' && fgetc ( fp ) == 'S' ) ) ) break ; else SAFE_E ( fseek ( fp , -- pos , SEEK_SET ) , 0 , \"Failed<S2SV_blank>seek<S2SV_blank>to<S2SV_blank>xref<S2SV_blank>/Size.\\\\n\" ) ; SAFE_E ( fread ( buf , 1 , 21 , fp ) , 21 , \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>entry<S2SV_blank>Size<S2SV_blank>string.\\\\n\" ) ; xref -> n_entries = atoi ( buf + strlen ( \"ize<S2SV_blank>\" ) ) ; <S2SV_StartBug> xref -> entries = calloc ( 1 , xref -> n_entries * sizeof ( struct _xref_entry ) ) ; <S2SV_EndBug> obj_id = 0 ; fseek ( fp , xref -> start + strlen ( \"xref\" ) , SEEK_SET ) ; added_entries = 0 ; for ( i = 0 ; i < xref -> n_entries ; i ++ ) { c = fgetc ( fp ) ; while ( c == '\\\\n' || c == '\\\\r' ) c = fgetc ( fp ) ; buf_idx = 0 ; while ( c != '\\\\n' && c != '\\\\r' && ! feof ( fp ) && ! ferror ( fp ) && buf_idx < sizeof ( buf ) ) { buf [ buf_idx ++ ] = c ; c = fgetc ( fp ) ; } if ( buf_idx >= sizeof ( buf ) ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>locate<S2SV_blank>newline<S2SV_blank>character.<S2SV_blank>\" \"This<S2SV_blank>might<S2SV_blank>be<S2SV_blank>a<S2SV_blank>corrupt<S2SV_blank>PDF.\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } buf [ buf_idx ] = '\\\\0' ; if ( strchr ( buf , 't' ) ) break ; if ( strlen ( buf ) > 17 ) { xref -> entries [ i ] . obj_id = obj_id ++ ; xref -> entries [ i ] . offset = atol ( strtok ( buf , \"<S2SV_blank>\" ) ) ; xref -> entries [ i ] . gen_num = atoi ( strtok ( NULL , \"<S2SV_blank>\" ) ) ; xref -> entries [ i ] . f_or_n = buf [ 17 ] ; ++ added_entries ; } else { obj_id = atoi ( buf ) ; -- i ; } } xref -> n_entries = added_entries ; fseek ( fp , start , SEEK_SET ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> entries = safe_calloc ( <S2SV_ModEnd> xref -> n_entries\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum hstore_from_record ( PG_FUNCTION_ARGS ) { HeapTupleHeader rec ; int32 buflen ; HStore * out ; Pairs * pairs ; Oid tupType ; int32 tupTypmod ; TupleDesc tupdesc ; HeapTupleData tuple ; RecordIOData * my_extra ; int ncolumns ; int i , j ; Datum * values ; bool * nulls ; if ( PG_ARGISNULL ( 0 ) ) { Oid argtype = get_fn_expr_argtype ( fcinfo -> flinfo , 0 ) ; tupType = argtype ; tupTypmod = - 1 ; rec = NULL ; } else { rec = PG_GETARG_HEAPTUPLEHEADER ( 0 ) ; tupType = HeapTupleHeaderGetTypeId ( rec ) ; tupTypmod = HeapTupleHeaderGetTypMod ( rec ) ; } tupdesc = lookup_rowtype_tupdesc ( tupType , tupTypmod ) ; ncolumns = tupdesc -> natts ; my_extra = ( RecordIOData * ) fcinfo -> flinfo -> fn_extra ; if ( my_extra == NULL || my_extra -> ncolumns != ncolumns ) { fcinfo -> flinfo -> fn_extra = MemoryContextAlloc ( fcinfo -> flinfo -> fn_mcxt , sizeof ( RecordIOData ) - sizeof ( ColumnIOData ) + ncolumns * sizeof ( ColumnIOData ) ) ; my_extra = ( RecordIOData * ) fcinfo -> flinfo -> fn_extra ; my_extra -> record_type = InvalidOid ; my_extra -> record_typmod = 0 ; } if ( my_extra -> record_type != tupType || my_extra -> record_typmod != tupTypmod ) { MemSet ( my_extra , 0 , sizeof ( RecordIOData ) - sizeof ( ColumnIOData ) + ncolumns * sizeof ( ColumnIOData ) ) ; my_extra -> record_type = tupType ; my_extra -> record_typmod = tupTypmod ; my_extra -> ncolumns = ncolumns ; } <S2SV_StartBug> pairs = palloc ( ncolumns * sizeof ( Pairs ) ) ; <S2SV_EndBug> if ( rec ) { tuple . t_len = HeapTupleHeaderGetDatumLength ( rec ) ; ItemPointerSetInvalid ( & ( tuple . t_self ) ) ; tuple . t_tableOid = InvalidOid ; tuple . t_data = rec ; values = ( Datum * ) palloc ( ncolumns * sizeof ( Datum ) ) ; nulls = ( bool * ) palloc ( ncolumns * sizeof ( bool ) ) ; heap_deform_tuple ( & tuple , tupdesc , values , nulls ) ; } else { values = NULL ; nulls = NULL ; } for ( i = 0 , j = 0 ; i < ncolumns ; ++ i ) { ColumnIOData * column_info = & my_extra -> columns [ i ] ; Oid column_type = tupdesc -> attrs [ i ] -> atttypid ; char * value ; if ( tupdesc -> attrs [ i ] -> attisdropped ) continue ; pairs [ j ] . key = NameStr ( tupdesc -> attrs [ i ] -> attname ) ; pairs [ j ] . keylen = hstoreCheckKeyLen ( strlen ( NameStr ( tupdesc -> attrs [ i ] -> attname ) ) ) ; if ( ! nulls || nulls [ i ] ) { pairs [ j ] . val = NULL ; pairs [ j ] . vallen = 4 ; pairs [ j ] . isnull = true ; pairs [ j ] . needfree = false ; ++ j ; continue ; } if ( column_info -> column_type != column_type ) { bool typIsVarlena ; getTypeOutputInfo ( column_type , & column_info -> typiofunc , & typIsVarlena ) ; fmgr_info_cxt ( column_info -> typiofunc , & column_info -> proc , fcinfo -> flinfo -> fn_mcxt ) ; column_info -> column_type = column_type ; } value = OutputFunctionCall ( & column_info -> proc , values [ i ] ) ; pairs [ j ] . val = value ; pairs [ j ] . vallen = hstoreCheckValLen ( strlen ( value ) ) ; pairs [ j ] . isnull = false ; pairs [ j ] . needfree = false ; ++ j ; } ncolumns = hstoreUniquePairs ( pairs , j , & buflen ) ; out = hstorePairs ( pairs , ncolumns , buflen ) ; ReleaseTupleDesc ( tupdesc ) ; PG_RETURN_POINTER ( out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ncolumns ; } Assert ( ncolumns <= MaxTupleAttributeNumber ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int PredictorEncodeTile ( TIFF * tif , uint8 * bp0 , tmsize_t cc0 , uint16 s ) { static const char module [ ] = \"PredictorEncodeTile\" ; TIFFPredictorState * sp = PredictorState ( tif ) ; uint8 * working_copy ; tmsize_t cc = cc0 , rowsize ; unsigned char * bp ; int result_code ; assert ( sp != NULL ) ; assert ( sp -> encodepfunc != NULL ) ; assert ( sp -> encodetile != NULL ) ; working_copy = ( uint8 * ) _TIFFmalloc ( cc0 ) ; if ( working_copy == NULL ) { TIFFErrorExt ( tif -> tif_clientdata , module , \"Out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>allocating<S2SV_blank>\" TIFF_SSIZE_FORMAT \"<S2SV_blank>byte<S2SV_blank>temp<S2SV_blank>buffer.\" , cc0 ) ; return 0 ; } memcpy ( working_copy , bp0 , cc0 ) ; bp = working_copy ; rowsize = sp -> rowsize ; assert ( rowsize > 0 ) ; <S2SV_StartBug> assert ( ( cc0 % rowsize ) == 0 ) ; <S2SV_EndBug> while ( cc > 0 ) { ( * sp -> encodepfunc ) ( tif , bp , rowsize ) ; cc -= rowsize ; bp += rowsize ; } result_code = ( * sp -> encodetile ) ( tif , working_copy , cc0 , s ) ; _TIFFfree ( working_copy ) ; return result_code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; if <S2SV_ModEnd> ( ( cc0 <S2SV_ModStart> % rowsize ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"PredictorEncodeTile\" , \"%s\" , \"(cc0%rowsize)!=0\" ) ; return 0 ; } <S2SV_ModEnd> while ( cc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8649\n\n```\nCWE-264 int lxc_attach ( const char * name , const char * lxcpath , lxc_attach_exec_t exec_function , void * exec_payload , lxc_attach_options_t * options , pid_t * attached_process ) { int ret , status ; pid_t init_pid , pid , attached_pid , expected ; struct lxc_proc_context_info * init_ctx ; char * cwd ; char * new_cwd ; int ipc_sockets [ 2 ] ; <S2SV_StartBug> int procfd ; <S2SV_EndBug> signed long personality ; if ( ! options ) options = & attach_static_default_options ; init_pid = lxc_cmd_get_init_pid ( name , lxcpath ) ; if ( init_pid < 0 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>the<S2SV_blank>init<S2SV_blank>pid\" ) ; return - 1 ; } init_ctx = lxc_proc_get_context_info ( init_pid ) ; if ( ! init_ctx ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>context<S2SV_blank>of<S2SV_blank>the<S2SV_blank>init<S2SV_blank>process,<S2SV_blank>pid<S2SV_blank>=<S2SV_blank>%ld\" , ( long ) init_pid ) ; return - 1 ; } personality = get_personality ( name , lxcpath ) ; if ( init_ctx -> personality < 0 ) { ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>personality<S2SV_blank>of<S2SV_blank>the<S2SV_blank>container\" ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } init_ctx -> personality = personality ; init_ctx -> container = lxc_container_new ( name , lxcpath ) ; if ( ! init_ctx -> container ) return - 1 ; if ( ! fetch_seccomp ( init_ctx -> container , options ) ) WARN ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>seccomp<S2SV_blank>policy\" ) ; if ( ! no_new_privs ( init_ctx -> container , options ) ) WARN ( \"Could<S2SV_blank>not<S2SV_blank>determine<S2SV_blank>whether<S2SV_blank>PR_SET_NO_NEW_PRIVS<S2SV_blank>is<S2SV_blank>set.\" ) ; cwd = getcwd ( NULL , 0 ) ; if ( options -> namespaces == - 1 ) { options -> namespaces = lxc_cmd_get_clone_flags ( name , lxcpath ) ; if ( options -> namespaces == - 1 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>automatically<S2SV_blank>determine<S2SV_blank>the<S2SV_blank>\" \"namespaces<S2SV_blank>which<S2SV_blank>the<S2SV_blank>container<S2SV_blank>unshared\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } } ret = socketpair ( PF_LOCAL , SOCK_STREAM | SOCK_CLOEXEC , 0 , ipc_sockets ) ; if ( ret < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>up<S2SV_blank>required<S2SV_blank>IPC<S2SV_blank>mechanism<S2SV_blank>for<S2SV_blank>attaching\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } pid = fork ( ) ; if ( pid < 0 ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>first<S2SV_blank>subprocess\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } if ( pid ) { <S2SV_StartBug> pid_t to_cleanup_pid = pid ; <S2SV_EndBug> close ( ipc_sockets [ 1 ] ) ; free ( cwd ) ; if ( options -> attach_flags & LXC_ATTACH_MOVE_TO_CGROUP ) { if ( ! cgroup_attach ( name , lxcpath , pid ) ) goto cleanup_error ; } <S2SV_StartBug> status = 0 ; <S2SV_EndBug> ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" ) ; goto cleanup_error ; } <S2SV_StartBug> ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & attached_pid , sizeof ( attached_pid ) , NULL ) ; <S2SV_EndBug> if ( ret <= 0 ) { <S2SV_StartBug> if ( ret != 0 ) <S2SV_EndBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>attached<S2SV_blank>process\" ) ; goto cleanup_error ; } <S2SV_StartBug> if ( options -> stdin_fd == 0 ) { <S2SV_EndBug> signal ( SIGINT , SIG_IGN ) ; signal ( SIGQUIT , SIG_IGN ) ; } ret = wait_for_pid ( pid ) ; if ( ret < 0 ) goto cleanup_error ; to_cleanup_pid = attached_pid ; status = 0 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" ) ; goto cleanup_error ; } expected = 1 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { if ( ret != 0 ) <S2SV_StartBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>(1)\" ) ; <S2SV_EndBug> goto cleanup_error ; } status = 2 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { <S2SV_StartBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(2)\" ) ; <S2SV_EndBug> goto cleanup_error ; } <S2SV_StartBug> shutdown ( ipc_sockets [ 0 ] , SHUT_RDWR ) ; <S2SV_EndBug> close ( ipc_sockets [ 0 ] ) ; lxc_proc_put_context_info ( init_ctx ) ; * attached_process = attached_pid ; return 0 ; <S2SV_StartBug> cleanup_error : <S2SV_EndBug> shutdown ( ipc_sockets [ 0 ] , SHUT_RDWR ) ; close ( ipc_sockets [ 0 ] ) ; if ( to_cleanup_pid ) ( void ) wait_for_pid ( to_cleanup_pid ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } close ( ipc_sockets [ 0 ] ) ; expected = 0 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 1 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>communicating<S2SV_blank>with<S2SV_blank>child<S2SV_blank>process\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( ( options -> attach_flags & LXC_ATTACH_MOVE_TO_CGROUP ) && cgns_supported ( ) ) options -> namespaces |= CLONE_NEWCGROUP ; <S2SV_StartBug> procfd = open ( \"/proc\" , O_DIRECTORY | O_RDONLY ) ; <S2SV_EndBug> if ( procfd < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>/proc\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } ret = lxc_attach_to_ns ( init_pid , options -> namespaces ) ; if ( ret < 0 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>enter<S2SV_blank>the<S2SV_blank>namespace\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( options -> initial_cwd ) new_cwd = options -> initial_cwd ; else new_cwd = cwd ; ret = chdir ( new_cwd ) ; if ( ret < 0 ) WARN ( \"could<S2SV_blank>not<S2SV_blank>change<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>\\'%s\\'\" , new_cwd ) ; free ( cwd ) ; { struct attach_clone_payload payload = { . ipc_socket = ipc_sockets [ 1 ] , . options = options , . init_ctx = init_ctx , . exec_function = exec_function , . exec_payload = exec_payload , <S2SV_StartBug> . procfd = procfd <S2SV_EndBug> } ; pid = lxc_clone ( attach_child_main , & payload , CLONE_PARENT ) ; } if ( pid <= 0 ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>subprocess\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } ret = lxc_write_nointr ( ipc_sockets [ 1 ] , & pid , sizeof ( pid ) ) ; if ( ret != sizeof ( pid ) ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>main<S2SV_blank>process<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>the<S2SV_blank>attached<S2SV_blank>process\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } rexit ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ] ; <S2SV_ModEnd> signed long personality <S2SV_ModStart> pid ) { int procfd = - 1 ; <S2SV_ModStart> cleanup_error ; } procfd = open ( \"/proc\" , O_DIRECTORY | O_RDONLY | O_CLOEXEC ) ; if ( procfd < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>/proc.\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> cleanup_error ; } status = 0 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> , sizeof ( status ) <S2SV_ModEnd> ) ; if <S2SV_ModStart> 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> cleanup_error ; } ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & attached_pid , sizeof ( attached_pid ) , NULL ) ; if ( ret <= 0 ) { if ( ret != 0 ) ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>attached<S2SV_blank>process\" ) ; goto cleanup_error ; } <S2SV_ModStart> ) ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>\" \"from<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>(1)\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>\" \"initialization<S2SV_blank>(2):<S2SV_blank>%s.\" , strerror ( errno ) <S2SV_ModEnd> ) ; goto <S2SV_ModStart> cleanup_error ; } expected = 3 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>for<S2SV_blank>the<S2SV_blank>child<S2SV_blank>to<S2SV_blank>tell<S2SV_blank>us<S2SV_blank>to<S2SV_blank>open<S2SV_blank>LSM<S2SV_blank>fd<S2SV_blank>(3):<S2SV_blank>%s.\" , strerror ( errno ) ) ; goto cleanup_error ; } if ( ( options -> namespaces & CLONE_NEWNS ) && ( options -> attach_flags & LXC_ATTACH_LSM ) && init_ctx -> lsm_label ) { int on_exec , labelfd ; on_exec = options -> attach_flags & LXC_ATTACH_LSM_EXEC ? 1 : 0 ; labelfd = lsm_openat ( procfd , attached_pid , on_exec ) ; if ( labelfd < 0 ) goto cleanup_error ; ret = lxc_abstract_unix_send_fd ( ipc_sockets [ 0 ] , labelfd , NULL , 0 ) ; if ( ret <= 0 ) { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>send<S2SV_blank>child<S2SV_blank>LSM<S2SV_blank>fd<S2SV_blank>(4):<S2SV_blank>%s.\" , strerror ( errno ) ) ; goto cleanup_error ; } } <S2SV_ModStart> ; cleanup_error : if ( procfd >= 0 ) close ( procfd ) ; <S2SV_ModStart> |= CLONE_NEWCGROUP ; <S2SV_ModEnd> ret = lxc_attach_to_ns <S2SV_ModStart> = exec_payload , <S2SV_ModEnd> } ; pid\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int try_filter_frame ( const YV12_BUFFER_CONFIG * sd , VP9_COMP * const cpi , <S2SV_EndBug> int filt_level , int partial_frame ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> int filt_err ; <S2SV_EndBug> <S2SV_StartBug> vp9_loop_filter_frame ( cm , & cpi -> mb . e_mbd , filt_level , 1 , partial_frame ) ; <S2SV_EndBug> <S2SV_StartBug> filt_err = vp9_get_y_sse ( sd , cm -> frame_to_show ) ; <S2SV_EndBug> vpx_yv12_copy_y ( & cpi -> last_frame_uf , cm -> frame_to_show ) ; return filt_err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int64_t <S2SV_ModEnd> try_filter_frame ( const <S2SV_ModStart> -> common ; int64_t filt_err ; if ( cpi -> num_workers > 1 ) vp9_loop_filter_frame_mt ( cm -> frame_to_show , cm , cpi -> td . mb . e_mbd . plane , filt_level , 1 , partial_frame , cpi -> workers , cpi -> num_workers , & cpi -> lf_row_sync ) ; else vp9_loop_filter_frame ( cm -> frame_to_show , <S2SV_ModEnd> cm , & <S2SV_ModStart> & cpi -> td . <S2SV_ModStart> partial_frame ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( cm -> use_highbitdepth ) { filt_err = vp9_highbd_get_y_sse ( sd , cm -> frame_to_show ) ; } else { <S2SV_ModStart> frame_to_show ) ; } # else filt_err = vp9_get_y_sse ( sd , cm -> frame_to_show ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 static int tcos_select_file ( sc_card_t * card , const sc_path_t * in_path , sc_file_t * * file_out ) { sc_context_t * ctx ; sc_apdu_t apdu ; sc_file_t * file = NULL ; u8 buf [ SC_MAX_APDU_BUFFER_SIZE ] , pathbuf [ SC_MAX_PATH_SIZE ] , * path = pathbuf ; unsigned int i ; int r , pathlen ; assert ( card != NULL && in_path != NULL ) ; ctx = card -> ctx ; memcpy ( path , in_path -> value , in_path -> len ) ; pathlen = in_path -> len ; sc_format_apdu ( card , & apdu , SC_APDU_CASE_4_SHORT , 0xA4 , 0 , 0x04 ) ; switch ( in_path -> type ) { case SC_PATH_TYPE_FILE_ID : if ( pathlen != 2 ) return SC_ERROR_INVALID_ARGUMENTS ; case SC_PATH_TYPE_FROM_CURRENT : apdu . p1 = 9 ; break ; case SC_PATH_TYPE_DF_NAME : apdu . p1 = 4 ; break ; case SC_PATH_TYPE_PATH : apdu . p1 = 8 ; if ( pathlen >= 2 && memcmp ( path , \"\\\\x3F\\\\x00\" , 2 ) == 0 ) path += 2 , pathlen -= 2 ; if ( pathlen == 0 ) apdu . p1 = 0 ; break ; case SC_PATH_TYPE_PARENT : apdu . p1 = 3 ; pathlen = 0 ; break ; default : SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_VERBOSE , SC_ERROR_INVALID_ARGUMENTS ) ; } if ( pathlen == 0 ) apdu . cse = SC_APDU_CASE_2_SHORT ; apdu . lc = pathlen ; apdu . data = path ; apdu . datalen = pathlen ; if ( file_out != NULL ) { apdu . resp = buf ; apdu . resplen = sizeof ( buf ) ; apdu . le = 256 ; } else { apdu . resplen = 0 ; apdu . le = 0 ; apdu . p2 = 0x0C ; apdu . cse = ( pathlen == 0 ) ? SC_APDU_CASE_1 : SC_APDU_CASE_3_SHORT ; } r = sc_transmit_apdu ( card , & apdu ) ; SC_TEST_RET ( ctx , SC_LOG_DEBUG_NORMAL , r , \"APDU<S2SV_blank>transmit<S2SV_blank>failed\" ) ; r = sc_check_sw ( card , apdu . sw1 , apdu . sw2 ) ; if ( r || file_out == NULL ) SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_VERBOSE , r ) ; if ( apdu . resplen < 1 || apdu . resp [ 0 ] != 0x62 ) { sc_debug ( ctx , SC_LOG_DEBUG_NORMAL , \"received<S2SV_blank>invalid<S2SV_blank>template<S2SV_blank>%02X\\\\n\" , apdu . resp [ 0 ] ) ; SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_VERBOSE , SC_ERROR_UNKNOWN_DATA_RECEIVED ) ; } file = sc_file_new ( ) ; if ( file == NULL ) SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_NORMAL , SC_ERROR_OUT_OF_MEMORY ) ; * file_out = file ; file -> path = * in_path ; for ( i = 2 ; i + 1 < apdu . resplen && i + 1 + apdu . resp [ i + 1 ] < apdu . resplen ; i += 2 + apdu . resp [ i + 1 ] ) { <S2SV_StartBug> int j , len = apdu . resp [ i + 1 ] ; <S2SV_EndBug> unsigned char type = apdu . resp [ i ] , * d = apdu . resp + i + 2 ; switch ( type ) { case 0x80 : case 0x81 : file -> size = 0 ; for ( j = 0 ; j < len ; ++ j ) file -> size = ( file -> size << 8 ) | d [ j ] ; break ; case 0x82 : file -> shareable = ( d [ 0 ] & 0x40 ) ? 1 : 0 ; file -> ef_structure = d [ 0 ] & 7 ; switch ( ( d [ 0 ] >> 3 ) & 7 ) { case 0 : file -> type = SC_FILE_TYPE_WORKING_EF ; break ; case 7 : file -> type = SC_FILE_TYPE_DF ; break ; default : sc_debug ( ctx , SC_LOG_DEBUG_NORMAL , \"invalid<S2SV_blank>file<S2SV_blank>type<S2SV_blank>%02X<S2SV_blank>in<S2SV_blank>file<S2SV_blank>descriptor\\\\n\" , d [ 0 ] ) ; SC_FUNC_RETURN ( ctx , SC_LOG_DEBUG_VERBOSE , SC_ERROR_UNKNOWN_DATA_RECEIVED ) ; } break ; case 0x83 : file -> id = ( d [ 0 ] << 8 ) | d [ 1 ] ; break ; case 0x84 : <S2SV_StartBug> memcpy ( file -> name , d , len ) ; <S2SV_EndBug> <S2SV_StartBug> file -> namelen = len ; <S2SV_EndBug> break ; case 0x86 : sc_file_set_sec_attr ( file , d , len ) ; break ; default : if ( len > 0 ) sc_file_set_prop_attr ( file , d , len ) ; } } file -> magic = SC_FILE_MAGIC ; parse_sec_attr ( card , file , file -> sec_attr , file -> sec_attr_len ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) { size_t <S2SV_ModEnd> j , len <S2SV_ModStart> case 0x84 : file -> namelen = MIN ( sizeof file -> name , len ) ; <S2SV_ModStart> , d , <S2SV_ModEnd> file -> namelen <S2SV_ModStart> file -> namelen ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 key_ref_t lookup_user_key ( key_serial_t id , unsigned long lflags , key_perm_t perm ) { struct keyring_search_context ctx = { . match_data . cmp = lookup_user_key_possessed , . match_data . lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT , . flags = KEYRING_SEARCH_NO_STATE_CHECK , } ; struct request_key_auth * rka ; struct key * key ; key_ref_t key_ref , skey_ref ; int ret ; try_again : ctx . cred = get_current_cred ( ) ; key_ref = ERR_PTR ( - ENOKEY ) ; switch ( id ) { case KEY_SPEC_THREAD_KEYRING : if ( ! ctx . cred -> thread_keyring ) { if ( ! ( lflags & KEY_LOOKUP_CREATE ) ) goto error ; ret = install_thread_keyring ( ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error ; } goto reget_creds ; } key = ctx . cred -> thread_keyring ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_PROCESS_KEYRING : if ( ! ctx . cred -> process_keyring ) { if ( ! ( lflags & KEY_LOOKUP_CREATE ) ) goto error ; ret = install_process_keyring ( ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error ; } goto reget_creds ; } key = ctx . cred -> process_keyring ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_SESSION_KEYRING : if ( ! ctx . cred -> session_keyring ) { ret = install_user_keyrings ( ) ; if ( ret < 0 ) goto error ; if ( lflags & KEY_LOOKUP_CREATE ) ret = join_session_keyring ( NULL ) ; else ret = install_session_keyring ( ctx . cred -> user -> session_keyring ) ; if ( ret < 0 ) goto error ; goto reget_creds ; } else if ( ctx . cred -> session_keyring == ctx . cred -> user -> session_keyring && lflags & KEY_LOOKUP_CREATE ) { ret = join_session_keyring ( NULL ) ; if ( ret < 0 ) goto error ; goto reget_creds ; } rcu_read_lock ( ) ; key = rcu_dereference ( ctx . cred -> session_keyring ) ; __key_get ( key ) ; rcu_read_unlock ( ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_USER_KEYRING : if ( ! ctx . cred -> user -> uid_keyring ) { ret = install_user_keyrings ( ) ; if ( ret < 0 ) goto error ; } key = ctx . cred -> user -> uid_keyring ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_USER_SESSION_KEYRING : if ( ! ctx . cred -> user -> session_keyring ) { ret = install_user_keyrings ( ) ; if ( ret < 0 ) goto error ; } key = ctx . cred -> user -> session_keyring ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_GROUP_KEYRING : key_ref = ERR_PTR ( - EINVAL ) ; goto error ; case KEY_SPEC_REQKEY_AUTH_KEY : key = ctx . cred -> request_key_auth ; if ( ! key ) goto error ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_REQUESTOR_KEYRING : if ( ! ctx . cred -> request_key_auth ) goto error ; down_read ( & ctx . cred -> request_key_auth -> sem ) ; if ( test_bit ( KEY_FLAG_REVOKED , & ctx . cred -> request_key_auth -> flags ) ) { key_ref = ERR_PTR ( - EKEYREVOKED ) ; key = NULL ; } else { rka = ctx . cred -> request_key_auth -> payload . data [ 0 ] ; key = rka -> dest_keyring ; __key_get ( key ) ; } up_read ( & ctx . cred -> request_key_auth -> sem ) ; if ( ! key ) goto error ; key_ref = make_key_ref ( key , 1 ) ; break ; default : key_ref = ERR_PTR ( - EINVAL ) ; if ( id < 1 ) goto error ; key = key_lookup ( id ) ; if ( IS_ERR ( key ) ) { key_ref = ERR_CAST ( key ) ; goto error ; } key_ref = make_key_ref ( key , 0 ) ; ctx . index_key . type = key -> type ; ctx . index_key . description = key -> description ; ctx . index_key . desc_len = strlen ( key -> description ) ; ctx . match_data . raw_data = key ; kdebug ( \"check<S2SV_blank>possessed\" ) ; skey_ref = search_process_keyrings ( & ctx ) ; kdebug ( \"possessed=%p\" , skey_ref ) ; if ( ! IS_ERR ( skey_ref ) ) { key_put ( key ) ; key_ref = skey_ref ; } break ; } if ( lflags & KEY_LOOKUP_FOR_UNLINK ) { ret = 0 ; goto error ; } if ( ! ( lflags & KEY_LOOKUP_PARTIAL ) ) { ret = wait_for_key_construction ( key , true ) ; switch ( ret ) { case - ERESTARTSYS : goto invalid_key ; default : if ( perm ) goto invalid_key ; case 0 : break ; } } else if ( perm ) { ret = key_validate ( key ) ; if ( ret < 0 ) goto invalid_key ; } ret = - EIO ; if ( ! ( lflags & KEY_LOOKUP_PARTIAL ) && <S2SV_StartBug> ! test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) <S2SV_EndBug> goto invalid_key ; ret = key_task_permission ( key_ref , ctx . cred , perm ) ; if ( ret < 0 ) goto invalid_key ; key -> last_used_at = current_kernel_time ( ) . tv_sec ; error : put_cred ( ctx . cred ) ; return key_ref ; invalid_key : key_ref_put ( key_ref ) ; key_ref = ERR_PTR ( ret ) ; goto error ; reget_creds : put_cred ( ctx . cred ) ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> KEY_LOOKUP_PARTIAL ) && key_read_state ( key ) == KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) goto invalid_key\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int rd_inter4x4_uv ( VP8_COMP * cpi , MACROBLOCK * x , int * rate , int * distortion , int fullpixel ) <S2SV_StartBug> { <S2SV_EndBug> vp8_build_inter4x4_predictors_mbuv ( & x -> e_mbd ) ; vp8_subtract_mbuv ( x -> src_diff , x -> src . u_buffer , x -> src . v_buffer , x -> src . uv_stride , & x -> e_mbd . predictor [ 256 ] , & x -> e_mbd . predictor [ 320 ] , 8 ) ; vp8_transform_mbuv ( x ) ; vp8_quantize_mbuv ( x ) ; * rate = rd_cost_mbuv ( x ) ; * distortion = vp8_mbuverror ( x ) / 4 ; return RDCOST ( x -> rdmult , x -> rddiv , * rate , * distortion ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fullpixel ) { ( void ) cpi ; ( void ) fullpixel ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_update_mv_count ( VP9_COMMON * cm , const MACROBLOCKD * xd ) { <S2SV_EndBug> const MODE_INFO * mi = xd -> mi [ 0 ] ; <S2SV_StartBug> const MB_MODE_INFO * const mbmi = & mi -> mbmi ; <S2SV_EndBug> if ( mbmi -> sb_type < BLOCK_8X8 ) { const int num_4x4_w = num_4x4_blocks_wide_lookup [ mbmi -> sb_type ] ; const int num_4x4_h = num_4x4_blocks_high_lookup [ mbmi -> sb_type ] ; int idx , idy ; for ( idy = 0 ; idy < 2 ; idy += num_4x4_h ) { for ( idx = 0 ; idx < 2 ; idx += num_4x4_w ) { const int i = idy * 2 + idx ; if ( mi -> bmi [ i ] . as_mode == NEWMV ) <S2SV_StartBug> inc_mvs ( mbmi , mi -> bmi [ i ] . as_mv , & cm -> counts . mv ) ; <S2SV_EndBug> } } } else { if ( mbmi -> mode == NEWMV ) <S2SV_StartBug> inc_mvs ( mbmi , mbmi -> mv , & cm -> counts . mv ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_update_mv_count ( ThreadData * td ) { <S2SV_ModEnd> const MACROBLOCKD * <S2SV_ModStart> MACROBLOCKD * xd = & td -> mb . e_mbd ; <S2SV_ModEnd> const MODE_INFO * <S2SV_ModStart> mi -> mbmi ; const MB_MODE_INFO_EXT * mbmi_ext = td -> mb . mbmi_ext <S2SV_ModStart> ( mbmi , mbmi_ext , <S2SV_ModStart> as_mv , & td -> counts -> <S2SV_ModEnd> mv ) ; <S2SV_ModStart> ( mbmi , mbmi_ext , <S2SV_ModStart> mv , & td -> counts -> <S2SV_ModEnd> mv ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-13111\n\n```\nCWE-119 <S2SV_StartBug> static bool <S2SV_EndBug> ChunkedDecode ( Request * reqPtr , bool update ) { const Tcl_DString * bufPtr ; const char * end , * chunkStart ; <S2SV_StartBug> bool success = NS_TRUE ; <S2SV_EndBug> NS_NONNULL_ASSERT ( reqPtr != NULL ) ; bufPtr = & reqPtr -> buffer ; end = bufPtr -> string + bufPtr -> length ; chunkStart = bufPtr -> string + reqPtr -> chunkStartOff ; while ( reqPtr -> chunkStartOff < ( size_t ) bufPtr -> length ) { char * p = strstr ( chunkStart , \"\\\\r\\\\n\" ) ; <S2SV_StartBug> size_t chunk_length ; <S2SV_EndBug> if ( p == NULL ) { Ns_Log ( DriverDebug , \"ChunkedDecode:<S2SV_blank>chunk<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>end-of-line\" ) ; <S2SV_StartBug> success = NS_FALSE ; <S2SV_EndBug> break ; } * p = '\\\\0' ; <S2SV_StartBug> chunk_length = ( size_t ) strtol ( chunkStart , NULL , 16 ) ; <S2SV_EndBug> * p = '\\\\r' ; <S2SV_StartBug> if ( p + 2 + chunk_length > end ) { <S2SV_EndBug> Ns_Log ( DriverDebug , \"ChunkedDecode:<S2SV_blank>chunk<S2SV_blank>length<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer\" ) ; <S2SV_StartBug> success = NS_FALSE ; <S2SV_EndBug> break ; } if ( update ) { char * writeBuffer = bufPtr -> string + reqPtr -> chunkWriteOff ; <S2SV_StartBug> memmove ( writeBuffer , p + 2 , chunk_length ) ; <S2SV_EndBug> <S2SV_StartBug> reqPtr -> chunkWriteOff += chunk_length ; <S2SV_EndBug> <S2SV_StartBug> * ( writeBuffer + chunk_length ) = '\\\\0' ; <S2SV_EndBug> } <S2SV_StartBug> reqPtr -> chunkStartOff += ( size_t ) ( p - chunkStart ) + 4u + chunk_length ; <S2SV_EndBug> chunkStart = bufPtr -> string + reqPtr -> chunkStartOff ; } <S2SV_StartBug> return success ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static SockState <S2SV_ModEnd> ChunkedDecode ( Request <S2SV_ModStart> * chunkStart ; SockState result = SOCK_READY <S2SV_ModEnd> ; NS_NONNULL_ASSERT ( <S2SV_ModStart> \"\\\\r\\\\n\" ) ; long chunkLength <S2SV_ModEnd> ; if ( <S2SV_ModStart> \"ChunkedDecode:<S2SV_blank>chunk<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>end-of-line\" ) ; result = SOCK_MORE <S2SV_ModEnd> ; break ; <S2SV_ModStart> = '\\\\0' ; chunkLength = <S2SV_ModEnd> strtol ( chunkStart <S2SV_ModStart> ; if ( chunkLength < 0 ) { Ns_Log ( Warning , \"ChunkedDecode:<S2SV_blank>negative<S2SV_blank>chunk<S2SV_blank>length\" ) ; result = SOCK_BADREQUEST ; break ; } * p = '\\\\r' ; if ( <S2SV_ModStart> + 2 + chunkLength <S2SV_ModEnd> > end ) <S2SV_ModStart> \"ChunkedDecode:<S2SV_blank>chunk<S2SV_blank>length<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer\" ) ; result = SOCK_MORE <S2SV_ModEnd> ; break ; <S2SV_ModStart> + 2 , ( size_t ) chunkLength <S2SV_ModEnd> ) ; reqPtr <S2SV_ModStart> -> chunkWriteOff += ( size_t ) chunkLength <S2SV_ModEnd> ; * ( <S2SV_ModStart> ( writeBuffer + chunkLength <S2SV_ModEnd> ) = '\\\\0' <S2SV_ModStart> + 4u + ( size_t ) chunkLength <S2SV_ModEnd> ; chunkStart = <S2SV_ModStart> ; } return result <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5873\n\n```\nCWE-416 static void * __ns_get_path ( struct path * path , struct ns_common * ns ) { struct vfsmount * mnt = nsfs_mnt ; struct qstr qname = { . name = \"\" , } ; struct dentry * dentry ; struct inode * inode ; unsigned long d ; rcu_read_lock ( ) ; d = atomic_long_read ( & ns -> stashed ) ; if ( ! d ) goto slow ; dentry = ( struct dentry * ) d ; if ( ! lockref_get_not_dead ( & dentry -> d_lockref ) ) goto slow ; rcu_read_unlock ( ) ; ns -> ops -> put ( ns ) ; got_it : path -> mnt = mntget ( mnt ) ; path -> dentry = dentry ; return NULL ; slow : rcu_read_unlock ( ) ; inode = new_inode_pseudo ( mnt -> mnt_sb ) ; if ( ! inode ) { ns -> ops -> put ( ns ) ; return ERR_PTR ( - ENOMEM ) ; } inode -> i_ino = ns -> inum ; inode -> i_mtime = inode -> i_atime = inode -> i_ctime = current_time ( inode ) ; inode -> i_flags |= S_IMMUTABLE ; inode -> i_mode = S_IFREG | S_IRUGO ; inode -> i_fop = & ns_file_operations ; inode -> i_private = ns ; dentry = d_alloc_pseudo ( mnt -> mnt_sb , & qname ) ; if ( ! dentry ) { iput ( inode ) ; return ERR_PTR ( - ENOMEM ) ; } d_instantiate ( dentry , inode ) ; <S2SV_StartBug> dentry -> d_fsdata = ( void * ) ns -> ops ; <S2SV_EndBug> d = atomic_long_cmpxchg ( & ns -> stashed , 0 , ( unsigned long ) dentry ) ; if ( d ) { d_delete ( dentry ) ; dput ( dentry ) ; cpu_relax ( ) ; return ERR_PTR ( - EAGAIN ) ; } goto got_it ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dentry -> d_flags |= DCACHE_RCUACCESS ; dentry ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> static int jas_iccgetuint ( jas_stream_t * in , int n , ulonglong * val ) <S2SV_EndBug> { int i ; int c ; <S2SV_StartBug> ulonglong v ; <S2SV_EndBug> v = 0 ; for ( i = n ; i > 0 ; -- i ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) return - 1 ; v = ( v << 8 ) | c ; } * val = v ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int n , jas_ulonglong <S2SV_ModEnd> * val ) <S2SV_ModStart> int c ; jas_ulonglong <S2SV_ModEnd> v ; v\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static void lspci_process ( STREAM s ) { unsigned int pkglen ; static char * rest = NULL ; <S2SV_StartBug> char * buf ; <S2SV_EndBug> pkglen = s -> end - s -> p ; buf = xmalloc ( pkglen + 1 ) ; STRNCPY ( buf , ( char * ) s -> p , pkglen + 1 ) ; str_handle_lines ( buf , & rest , lspci_process_line , NULL ) ; xfree ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * buf ; struct stream packet = * s ; if ( ! s_check ( s ) ) { rdp_protocol_error ( \"lspci_process(),<S2SV_blank>stream<S2SV_blank>is<S2SV_blank>in<S2SV_blank>unstable<S2SV_blank>state\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int fp_setreadl ( struct tok_state * tok , const char * enc ) { PyObject * readline , * io , * stream ; _Py_IDENTIFIER ( open ) ; _Py_IDENTIFIER ( readline ) ; int fd ; long pos ; fd = fileno ( tok -> fp ) ; pos = ftell ( tok -> fp ) ; if ( pos == - 1 || lseek ( fd , ( off_t ) ( pos > 0 ? pos - 1 : pos ) , SEEK_SET ) == ( off_t ) - 1 ) { PyErr_SetFromErrnoWithFilename ( PyExc_OSError , NULL ) ; return 0 ; } io = PyImport_ImportModuleNoBlock ( \"io\" ) ; if ( io == NULL ) return 0 ; stream = _PyObject_CallMethodId ( io , & PyId_open , \"isisOOO\" , fd , \"r\" , - 1 , enc , Py_None , Py_None , Py_False ) ; Py_DECREF ( io ) ; if ( stream == NULL ) return 0 ; readline = _PyObject_GetAttrId ( stream , & PyId_readline ) ; Py_DECREF ( stream ) ; if ( readline == NULL ) return 0 ; Py_XSETREF ( tok -> decoding_readline , readline ) ; if ( pos > 0 ) { <S2SV_StartBug> PyObject * bufobj = PyObject_CallObject ( readline , NULL ) ; <S2SV_EndBug> if ( bufobj == NULL ) return 0 ; Py_DECREF ( bufobj ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * bufobj = _PyObject_CallNoArg ( readline <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17178\n\n```\nCWE-772 LPSTR tr_esc_str ( LPCSTR arg , bool format ) { <S2SV_StartBug> LPSTR tmp = NULL ; <S2SV_EndBug> size_t cs = 0 , x , ds , len ; size_t s ; if ( NULL == arg ) return NULL ; s = strlen ( arg ) ; while ( ( s > 0 ) && isspace ( arg [ s - 1 ] ) ) s -- ; ds = s + 1 ; if ( s ) <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 2 ) ; } memset ( tmp , 0 , ds * sizeof ( CHAR ) ) ; for ( x = 0 ; x < s ; x ++ ) { switch ( arg [ x ] ) { case '<' : len = format ? 13 : 4 ; ds += len - 1 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 3 ) ; } if ( format ) strncpy ( & tmp [ cs ] , \"<replaceable>\" , len ) ; else strncpy ( & tmp [ cs ] , \"&lt;\" , len ) ; cs += len ; break ; case '>' : len = format ? 14 : 4 ; ds += len - 1 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 4 ) ; } if ( format ) strncpy ( & tmp [ cs ] , \"</replaceable>\" , len ) ; else strncpy ( & tmp [ cs ] , \"&lt;\" , len ) ; cs += len ; break ; case '\\\\'' : ds += 5 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 5 ) ; } tmp [ cs ++ ] = '&' ; tmp [ cs ++ ] = 'a' ; tmp [ cs ++ ] = 'p' ; tmp [ cs ++ ] = 'o' ; tmp [ cs ++ ] = 's' ; tmp [ cs ++ ] = ';' ; break ; case \\'\"\\' : ds += 5 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> if ( NULL == tmp ) { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 6 ) ; } tmp [ cs ++ ] = '&' ; tmp [ cs ++ ] = 'q' ; tmp [ cs ++ ] = 'u' ; tmp [ cs ++ ] = 'o' ; tmp [ cs ++ ] = 't' ; tmp [ cs ++ ] = ';' ; break ; case '&' : ds += 4 ; <S2SV_StartBug> tmp = ( LPSTR ) realloc ( tmp , ds * sizeof ( CHAR ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( NULL == tmp ) <S2SV_EndBug> { fprintf ( stderr , \"Could<S2SV_blank>not<S2SV_blank>reallocate<S2SV_blank>string<S2SV_blank>buffer.\\\\n\" ) ; exit ( - 7 ) ; } tmp [ cs ++ ] = '&' ; tmp [ cs ++ ] = 'a' ; tmp [ cs ++ ] = 'm' ; tmp [ cs ++ ] = 'p' ; tmp [ cs ++ ] = ';' ; break ; default : tmp [ cs ++ ] = arg [ x ] ; break ; } tmp [ ds - 1 ] = '\\\\0' ; } return tmp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { LPSTR tmp = NULL ; LPSTR tmp2 <S2SV_ModStart> ( s ) { tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 ; } <S2SV_ModStart> - 1 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> CHAR ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 <S2SV_ModStart> - 1 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> CHAR ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 <S2SV_ModStart> += 5 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> CHAR ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 <S2SV_ModStart> += 5 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> CHAR ) ) ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 <S2SV_ModStart> += 4 ; tmp2 <S2SV_ModEnd> = ( LPSTR <S2SV_ModStart> ; if ( ! tmp2 ) free ( tmp ) ; tmp = tmp2 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14396\n\n```\nCWE-476 static SSL * open_ssl_connection ( rfbClient * client , int sockfd , rfbBool anonTLS , rfbCredential * cred ) { SSL_CTX * ssl_ctx = NULL ; SSL * ssl = NULL ; int n , finished = 0 ; X509_VERIFY_PARAM * param ; <S2SV_StartBug> uint8_t verify_crls = cred -> x509Credential . x509CrlVerifyMode ; <S2SV_EndBug> if ( ! ( ssl_ctx = SSL_CTX_new ( SSLv23_client_method ( ) ) ) ) { rfbClientLog ( \"Could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>new<S2SV_blank>SSL<S2SV_blank>context.\\\\n\" ) ; return NULL ; } param = X509_VERIFY_PARAM_new ( ) ; if ( ! anonTLS ) <S2SV_StartBug> { <S2SV_EndBug> if ( cred -> x509Credential . x509CACertFile ) { if ( ! SSL_CTX_load_verify_locations ( ssl_ctx , cred -> x509Credential . x509CACertFile , NULL ) ) { rfbClientLog ( \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>CA<S2SV_blank>certificate<S2SV_blank>from<S2SV_blank>%s.\\\\n\" , cred -> x509Credential . x509CACertFile ) ; goto error_free_ctx ; } } else { rfbClientLog ( \"Using<S2SV_blank>default<S2SV_blank>paths<S2SV_blank>for<S2SV_blank>certificate<S2SV_blank>verification.\\\\n\" ) ; SSL_CTX_set_default_verify_paths ( ssl_ctx ) ; } if ( cred -> x509Credential . x509CACrlFile ) { if ( ! load_crls_from_file ( cred -> x509Credential . x509CACrlFile , ssl_ctx ) ) { rfbClientLog ( \"CRLs<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>loaded.\\\\n\" ) ; goto error_free_ctx ; } if ( verify_crls == rfbX509CrlVerifyNone ) verify_crls = rfbX509CrlVerifyAll ; } if ( cred -> x509Credential . x509ClientCertFile && cred -> x509Credential . x509ClientKeyFile ) { if ( SSL_CTX_use_certificate_chain_file ( ssl_ctx , cred -> x509Credential . x509ClientCertFile ) != 1 ) { rfbClientLog ( \"Client<S2SV_blank>certificate<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>loaded.\\\\n\" ) ; goto error_free_ctx ; } if ( SSL_CTX_use_PrivateKey_file ( ssl_ctx , cred -> x509Credential . x509ClientKeyFile , SSL_FILETYPE_PEM ) != 1 ) { rfbClientLog ( \"Client<S2SV_blank>private<S2SV_blank>key<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>loaded.\\\\n\" ) ; goto error_free_ctx ; } if ( SSL_CTX_check_private_key ( ssl_ctx ) == 0 ) { rfbClientLog ( \"Client<S2SV_blank>certificate<S2SV_blank>and<S2SV_blank>private<S2SV_blank>key<S2SV_blank>do<S2SV_blank>not<S2SV_blank>match.\\\\n\" ) ; goto error_free_ctx ; } } SSL_CTX_set_verify ( ssl_ctx , SSL_VERIFY_PEER , NULL ) ; if ( verify_crls == rfbX509CrlVerifyClient ) X509_VERIFY_PARAM_set_flags ( param , X509_V_FLAG_CRL_CHECK ) ; else if ( verify_crls == rfbX509CrlVerifyAll ) X509_VERIFY_PARAM_set_flags ( param , X509_V_FLAG_CRL_CHECK | X509_V_FLAG_CRL_CHECK_ALL ) ; if ( ! X509_VERIFY_PARAM_set1_host ( param , client -> serverHost , strlen ( client -> serverHost ) ) ) { rfbClientLog ( \"Could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>server<S2SV_blank>name<S2SV_blank>for<S2SV_blank>verification.\\\\n\" ) ; goto error_free_ctx ; } SSL_CTX_set1_param ( ssl_ctx , param ) ; } if ( ! ( ssl = SSL_new ( ssl_ctx ) ) ) { rfbClientLog ( \"Could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>a<S2SV_blank>new<S2SV_blank>SSL<S2SV_blank>session.\\\\n\" ) ; goto error_free_ctx ; } SSL_set_cipher_list ( ssl , \"ALL\" ) ; SSL_set_fd ( ssl , sockfd ) ; SSL_CTX_set_app_data ( ssl_ctx , client ) ; do { n = SSL_connect ( ssl ) ; if ( n != 1 ) { if ( wait_for_data ( ssl , n , 1 ) != 1 ) { finished = 1 ; SSL_shutdown ( ssl ) ; goto error_free_ssl ; } } } while ( n != 1 && finished != 1 ) ; X509_VERIFY_PARAM_free ( param ) ; return ssl ; error_free_ssl : SSL_free ( ssl ) ; error_free_ctx : X509_VERIFY_PARAM_free ( param ) ; SSL_CTX_free ( ssl_ctx ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint8_t verify_crls <S2SV_ModEnd> ; if ( <S2SV_ModStart> anonTLS ) { verify_crls = cred -> x509Credential . x509CrlVerifyMode ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int __load_segment_descriptor ( struct x86_emulate_ctxt * ctxt , <S2SV_StartBug> u16 selector , int seg , u8 cpl , bool in_task_switch ) <S2SV_EndBug> { struct desc_struct seg_desc , old_desc ; u8 dpl , rpl ; unsigned err_vec = GP_VECTOR ; u32 err_code = 0 ; bool null_selector = ! ( selector & ~ 0x3 ) ; ulong desc_addr ; int ret ; u16 dummy ; u32 base3 = 0 ; memset ( & seg_desc , 0 , sizeof seg_desc ) ; if ( ctxt -> mode == X86EMUL_MODE_REAL ) { ctxt -> ops -> get_segment ( ctxt , & dummy , & seg_desc , NULL , seg ) ; set_desc_base ( & seg_desc , selector << 4 ) ; goto load ; } else if ( seg <= VCPU_SREG_GS && ctxt -> mode == X86EMUL_MODE_VM86 ) { set_desc_base ( & seg_desc , selector << 4 ) ; set_desc_limit ( & seg_desc , 0xffff ) ; seg_desc . type = 3 ; seg_desc . p = 1 ; seg_desc . s = 1 ; seg_desc . dpl = 3 ; goto load ; } rpl = selector & 3 ; if ( ( seg == VCPU_SREG_CS || ( seg == VCPU_SREG_SS && ( ctxt -> mode != X86EMUL_MODE_PROT64 || rpl != cpl ) ) || seg == VCPU_SREG_TR ) && null_selector ) goto exception ; if ( seg == VCPU_SREG_TR && ( selector & ( 1 << 2 ) ) ) goto exception ; if ( null_selector ) goto load ; ret = read_segment_descriptor ( ctxt , selector , & seg_desc , & desc_addr ) ; if ( ret != X86EMUL_CONTINUE ) return ret ; err_code = selector & 0xfffc ; err_vec = in_task_switch ? TS_VECTOR : GP_VECTOR ; if ( seg <= VCPU_SREG_GS && ! seg_desc . s ) goto exception ; if ( ! seg_desc . p ) { err_vec = ( seg == VCPU_SREG_SS ) ? SS_VECTOR : NP_VECTOR ; goto exception ; } dpl = seg_desc . dpl ; switch ( seg ) { case VCPU_SREG_SS : if ( rpl != cpl || ( seg_desc . type & 0xa ) != 0x2 || dpl != cpl ) goto exception ; break ; case VCPU_SREG_CS : if ( ! ( seg_desc . type & 8 ) ) goto exception ; if ( seg_desc . type & 4 ) { if ( dpl > cpl ) goto exception ; } else { if ( rpl > cpl || dpl != cpl ) goto exception ; } if ( seg_desc . d && seg_desc . l ) { u64 efer = 0 ; ctxt -> ops -> get_msr ( ctxt , MSR_EFER , & efer ) ; if ( efer & EFER_LMA ) goto exception ; } selector = ( selector & 0xfffc ) | cpl ; break ; case VCPU_SREG_TR : if ( seg_desc . s || ( seg_desc . type != 1 && seg_desc . type != 9 ) ) goto exception ; old_desc = seg_desc ; seg_desc . type |= 2 ; ret = ctxt -> ops -> cmpxchg_emulated ( ctxt , desc_addr , & old_desc , & seg_desc , sizeof ( seg_desc ) , & ctxt -> exception ) ; if ( ret != X86EMUL_CONTINUE ) return ret ; break ; case VCPU_SREG_LDTR : if ( seg_desc . s || seg_desc . type != 2 ) goto exception ; break ; default : if ( ( seg_desc . type & 0xa ) == 0x8 || ( ( ( seg_desc . type & 0xc ) != 0xc ) && ( rpl > dpl && cpl > dpl ) ) ) goto exception ; break ; } if ( seg_desc . s ) { seg_desc . type |= 1 ; ret = write_segment_descriptor ( ctxt , selector , & seg_desc ) ; if ( ret != X86EMUL_CONTINUE ) return ret ; } else if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) { ret = ctxt -> ops -> read_std ( ctxt , desc_addr + 8 , & base3 , sizeof ( base3 ) , & ctxt -> exception ) ; if ( ret != X86EMUL_CONTINUE ) return ret ; } load : ctxt -> ops -> set_segment ( ctxt , selector , & seg_desc , base3 , seg ) ; <S2SV_StartBug> return X86EMUL_CONTINUE ; <S2SV_EndBug> exception : return emulate_exception ( ctxt , err_vec , err_code , true ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , bool in_task_switch , struct desc_struct * desc <S2SV_ModStart> seg ) ; if ( desc ) * desc = seg_desc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19843\n\n```\nCWE-125 static int opmov ( RAsm * a , ut8 * data , const Opcode * op ) { int l = 0 ; st64 offset = 0 ; int mod = 0 ; int base = 0 ; int rex = 0 ; ut64 immediate = 0 ; if ( op -> operands [ 1 ] . type & OT_CONSTANT ) { if ( ! op -> operands [ 1 ] . is_good_flag ) { return - 1 ; } if ( op -> operands [ 1 ] . immediate == - 1 ) { return - 1 ; } immediate = op -> operands [ 1 ] . immediate * op -> operands [ 1 ] . sign ; if ( op -> operands [ 0 ] . type & OT_GPREG && ! ( op -> operands [ 0 ] . type & OT_MEMORY ) ) { if ( a -> bits == 64 && ( ( op -> operands [ 0 ] . type & OT_QWORD ) | ( op -> operands [ 1 ] . type & OT_QWORD ) ) ) { if ( ! ( op -> operands [ 1 ] . type & OT_CONSTANT ) && op -> operands [ 1 ] . extended ) { data [ l ++ ] = 0x49 ; } else { data [ l ++ ] = 0x48 ; } } else if ( op -> operands [ 0 ] . extended ) { data [ l ++ ] = 0x41 ; } if ( op -> operands [ 0 ] . type & OT_WORD ) { if ( a -> bits > 16 ) { data [ l ++ ] = 0x66 ; } } if ( op -> operands [ 0 ] . type & OT_BYTE ) { data [ l ++ ] = 0xb0 | op -> operands [ 0 ] . reg ; data [ l ++ ] = immediate ; } else { if ( a -> bits == 64 && ( ( op -> operands [ 0 ] . type & OT_QWORD ) | ( op -> operands [ 1 ] . type & OT_QWORD ) ) && immediate < UT32_MAX ) { data [ l ++ ] = 0xc7 ; data [ l ++ ] = 0xc0 | op -> operands [ 0 ] . reg ; } else { data [ l ++ ] = 0xb8 | op -> operands [ 0 ] . reg ; } data [ l ++ ] = immediate ; data [ l ++ ] = immediate >> 8 ; if ( ! ( op -> operands [ 0 ] . type & OT_WORD ) ) { data [ l ++ ] = immediate >> 16 ; data [ l ++ ] = immediate >> 24 ; } if ( a -> bits == 64 && immediate > UT32_MAX ) { data [ l ++ ] = immediate >> 32 ; data [ l ++ ] = immediate >> 40 ; data [ l ++ ] = immediate >> 48 ; data [ l ++ ] = immediate >> 56 ; } } } else if ( op -> operands [ 0 ] . type & OT_MEMORY ) { if ( ! op -> operands [ 0 ] . explicit_size ) { if ( op -> operands [ 0 ] . type & OT_GPREG ) { ( ( Opcode * ) op ) -> operands [ 0 ] . dest_size = op -> operands [ 0 ] . reg_size ; } else { return - 1 ; } } int dest_bits = 8 * ( ( op -> operands [ 0 ] . dest_size & ALL_SIZE ) >> OPSIZE_SHIFT ) ; int reg_bits = 8 * ( ( op -> operands [ 0 ] . reg_size & ALL_SIZE ) >> OPSIZE_SHIFT ) ; int offset = op -> operands [ 0 ] . offset * op -> operands [ 0 ] . offset_sign ; bool use_aso = false ; if ( reg_bits < a -> bits ) { use_aso = true ; } bool use_oso = false ; if ( dest_bits == 16 ) { use_oso = true ; } bool rip_rel = op -> operands [ 0 ] . regs [ 0 ] == X86R_RIP ; int rex = 1 << 6 ; bool use_rex = false ; if ( dest_bits == 64 ) { use_rex = true ; rex |= 1 << 3 ; } if ( op -> operands [ 0 ] . extended ) { use_rex = true ; rex |= 1 ; } int opcode ; if ( dest_bits == 8 ) { opcode = 0xc6 ; } else { opcode = 0xc7 ; } int modrm = 0 ; int mod ; int reg = 0 ; int rm ; bool use_sib = false ; int sib ; if ( offset == 0 ) { mod = 0 ; } else if ( offset < 128 && offset > - 129 ) { mod = 1 ; } else { mod = 2 ; } if ( reg_bits == 16 ) { if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BX && op -> operands [ 0 ] . regs [ 1 ] == X86R_SI ) { rm = B0000 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BX && op -> operands [ 0 ] . regs [ 1 ] == X86R_DI ) { rm = B0001 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BP && op -> operands [ 0 ] . regs [ 1 ] == X86R_SI ) { rm = B0010 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BP && op -> operands [ 0 ] . regs [ 1 ] == X86R_DI ) { rm = B0011 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_SI && op -> operands [ 0 ] . regs [ 1 ] == - 1 ) { rm = B0100 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_DI && op -> operands [ 0 ] . regs [ 1 ] == - 1 ) { rm = B0101 ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_BX && op -> operands [ 0 ] . regs [ 1 ] == - 1 ) { rm = B0111 ; } else { return - 1 ; } modrm = ( mod << 6 ) | ( reg << 3 ) | rm ; } else { if ( op -> operands [ 0 ] . extended ) { rm = op -> operands [ 0 ] . reg ; } else { rm = op -> operands [ 0 ] . regs [ 0 ] ; } if ( rm == 5 && mod == 0 ) { mod = 1 ; } int index = op -> operands [ 0 ] . regs [ 1 ] ; int scale = getsib ( op -> operands [ 0 ] . scale [ 1 ] ) ; if ( index != - 1 ) { use_sib = true ; sib = ( scale << 6 ) | ( index << 3 ) | rm ; } else if ( rm == 4 ) { use_sib = true ; sib = 0x24 ; } if ( use_sib ) { rm = B0100 ; } if ( rip_rel ) { modrm = ( B0000 << 6 ) | ( reg << 3 ) | B0101 ; sib = ( scale << 6 ) | ( B0100 << 3 ) | B0101 ; } else { modrm = ( mod << 6 ) | ( reg << 3 ) | rm ; } } if ( use_aso ) { data [ l ++ ] = 0x67 ; } if ( use_oso ) { data [ l ++ ] = 0x66 ; } if ( use_rex ) { data [ l ++ ] = rex ; } data [ l ++ ] = opcode ; data [ l ++ ] = modrm ; if ( use_sib ) { data [ l ++ ] = sib ; } if ( mod == 1 ) { data [ l ++ ] = offset ; } else if ( reg_bits == 16 && mod == 2 ) { data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; } else if ( mod == 2 || rip_rel ) { data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } int byte ; for ( byte = 0 ; byte < dest_bits && byte < 32 ; byte += 8 ) { data [ l ++ ] = ( immediate >> byte ) ; } } } else if ( op -> operands [ 1 ] . type & OT_REGALL && ! ( op -> operands [ 1 ] . type & OT_MEMORY ) ) { if ( op -> operands [ 0 ] . type & OT_CONSTANT ) { return - 1 ; } if ( op -> operands [ 0 ] . type & OT_REGTYPE & OT_SEGMENTREG && op -> operands [ 1 ] . type & OT_REGTYPE & OT_SEGMENTREG ) { return - 1 ; } if ( op -> operands [ 0 ] . type & OT_REGTYPE && op -> operands [ 1 ] . type & OT_REGTYPE ) { if ( ! ( ( op -> operands [ 0 ] . type & ALL_SIZE ) & ( op -> operands [ 1 ] . type & ALL_SIZE ) ) ) { return - 1 ; } } if ( a -> bits == 64 ) { if ( op -> operands [ 0 ] . extended ) { rex = 1 ; } if ( op -> operands [ 1 ] . extended ) { rex += 4 ; } if ( op -> operands [ 1 ] . type & OT_QWORD ) { if ( ! ( op -> operands [ 0 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x67 ; data [ l ++ ] = 0x48 ; } } if ( op -> operands [ 1 ] . type & OT_QWORD && op -> operands [ 0 ] . type & OT_QWORD ) { data [ l ++ ] = 0x48 | rex ; } if ( op -> operands [ 1 ] . type & OT_DWORD && op -> operands [ 0 ] . type & OT_DWORD ) { data [ l ++ ] = 0x40 | rex ; } } else if ( op -> operands [ 0 ] . extended && op -> operands [ 1 ] . extended ) { data [ l ++ ] = 0x45 ; } offset = op -> operands [ 0 ] . offset * op -> operands [ 0 ] . offset_sign ; if ( op -> operands [ 1 ] . type & OT_REGTYPE & OT_SEGMENTREG ) { data [ l ++ ] = 0x8c ; } else { if ( op -> operands [ 0 ] . type & OT_WORD ) { data [ l ++ ] = 0x66 ; } data [ l ++ ] = ( op -> operands [ 0 ] . type & OT_BYTE ) ? 0x88 : 0x89 ; } if ( op -> operands [ 0 ] . scale [ 0 ] > 1 ) { data [ l ++ ] = op -> operands [ 1 ] . reg << 3 | 4 ; data [ l ++ ] = getsib ( op -> operands [ 0 ] . scale [ 0 ] ) << 6 | op -> operands [ 0 ] . regs [ 0 ] << 3 | 5 ; data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; return l ; } if ( ! ( op -> operands [ 0 ] . type & OT_MEMORY ) ) { if ( op -> operands [ 0 ] . reg == X86R_UNDEFINED || op -> operands [ 1 ] . reg == X86R_UNDEFINED ) { return - 1 ; } mod = 0x3 ; data [ l ++ ] = mod << 6 | op -> operands [ 1 ] . reg << 3 | op -> operands [ 0 ] . reg ; } else if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_UNDEFINED ) { data [ l ++ ] = op -> operands [ 1 ] . reg << 3 | 0x5 ; data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } else { if ( op -> operands [ 0 ] . type & OT_MEMORY ) { if ( op -> operands [ 0 ] . regs [ 1 ] != X86R_UNDEFINED ) { data [ l ++ ] = op -> operands [ 1 ] . reg << 3 | 0x4 ; data [ l ++ ] = op -> operands [ 0 ] . regs [ 1 ] << 3 | op -> operands [ 0 ] . regs [ 0 ] ; return l ; } if ( offset ) { mod = ( offset > 128 || offset < - 129 ) ? 0x2 : 0x1 ; } if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_EBP ) { mod = 0x2 ; } data [ l ++ ] = mod << 6 | op -> operands [ 1 ] . reg << 3 | op -> operands [ 0 ] . regs [ 0 ] ; if ( op -> operands [ 0 ] . regs [ 0 ] == X86R_ESP ) { data [ l ++ ] = 0x24 ; } if ( offset ) { data [ l ++ ] = offset ; } if ( mod == 2 ) { data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } } } } else if ( op -> operands [ 1 ] . type & OT_MEMORY ) { if ( op -> operands [ 0 ] . type & OT_MEMORY ) { return - 1 ; } offset = op -> operands [ 1 ] . offset * op -> operands [ 1 ] . offset_sign ; if ( op -> operands [ 0 ] . reg == X86R_EAX && op -> operands [ 1 ] . regs [ 0 ] == X86R_UNDEFINED ) { if ( a -> bits == 64 ) { data [ l ++ ] = 0x48 ; } if ( op -> operands [ 0 ] . type & OT_BYTE ) { data [ l ++ ] = 0xa0 ; } else { data [ l ++ ] = 0xa1 ; } data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; if ( a -> bits == 64 ) { data [ l ++ ] = offset >> 32 ; data [ l ++ ] = offset >> 40 ; data [ l ++ ] = offset >> 48 ; data [ l ++ ] = offset >> 54 ; } return l ; } if ( op -> operands [ 0 ] . type & OT_BYTE && a -> bits == 64 && op -> operands [ 1 ] . regs [ 0 ] ) { if ( op -> operands [ 1 ] . regs [ 0 ] >= X86R_R8 && op -> operands [ 0 ] . reg < 4 ) { data [ l ++ ] = 0x41 ; data [ l ++ ] = 0x8a ; data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | ( op -> operands [ 1 ] . regs [ 0 ] - 8 ) ; return l ; } return - 1 ; } if ( op -> operands [ 1 ] . type & OT_REGTYPE & OT_SEGMENTREG ) { if ( op -> operands [ 1 ] . scale [ 0 ] == 0 ) { return - 1 ; } <S2SV_StartBug> data [ l ++ ] = SEG_REG_PREFIXES [ op -> operands [ 1 ] . regs [ 0 ] ] ; <S2SV_EndBug> <S2SV_StartBug> data [ l ++ ] = 0x8b ; <S2SV_EndBug> data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x5 ; <S2SV_StartBug> data [ l ++ ] = offset ; <S2SV_EndBug> data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; <S2SV_StartBug> return l ; <S2SV_EndBug> } <S2SV_StartBug> if ( a -> bits == 64 ) { <S2SV_EndBug> if ( op -> operands [ 0 ] . type & OT_QWORD ) { if ( ! ( op -> operands [ 1 ] . type & OT_QWORD ) ) { if ( op -> operands [ 1 ] . regs [ 0 ] != - 1 ) { data [ l ++ ] = 0x67 ; } data [ l ++ ] = 0x48 ; } } else if ( op -> operands [ 1 ] . type & OT_DWORD ) { data [ l ++ ] = 0x44 ; } else if ( ! ( op -> operands [ 1 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x67 ; } if ( op -> operands [ 1 ] . type & OT_QWORD && op -> operands [ 0 ] . type & OT_QWORD ) { data [ l ++ ] = 0x48 ; } } if ( op -> operands [ 0 ] . type & OT_WORD ) { data [ l ++ ] = 0x66 ; data [ l ++ ] = op -> operands [ 1 ] . type & OT_BYTE ? 0x8a : 0x8b ; } else { data [ l ++ ] = ( op -> operands [ 1 ] . type & OT_BYTE || op -> operands [ 0 ] . type & OT_BYTE ) ? 0x8a : 0x8b ; } if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_UNDEFINED ) { if ( a -> bits == 64 ) { data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x4 ; <S2SV_StartBug> data [ l ++ ] = 0x25 ; <S2SV_EndBug> } else { <S2SV_StartBug> data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x5 ; <S2SV_EndBug> } data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } else { <S2SV_StartBug> if ( op -> operands [ 1 ] . scale [ 0 ] > 1 ) { <S2SV_EndBug> <S2SV_StartBug> data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 4 ; <S2SV_EndBug> if ( op -> operands [ 1 ] . scale [ 0 ] >= 2 ) { base = 5 ; } if ( base ) { data [ l ++ ] = getsib ( op -> operands [ 1 ] . scale [ 0 ] ) << 6 | op -> operands [ 1 ] . regs [ 0 ] << 3 | base ; } else { data [ l ++ ] = getsib ( op -> operands [ 1 ] . scale [ 0 ] ) << 3 | op -> operands [ 1 ] . regs [ 0 ] ; } if ( offset || base ) { data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } return l ; } if ( op -> operands [ 1 ] . regs [ 1 ] != X86R_UNDEFINED ) { data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x4 ; data [ l ++ ] = op -> operands [ 1 ] . regs [ 1 ] << 3 | op -> operands [ 1 ] . regs [ 0 ] ; return l ; } if ( offset || op -> operands [ 1 ] . regs [ 0 ] == X86R_EBP ) { mod = 0x2 ; if ( op -> operands [ 1 ] . offset > 127 ) { mod = 0x4 ; } } if ( a -> bits == 64 && offset && op -> operands [ 0 ] . type & OT_QWORD ) { if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP ) { data [ l ++ ] = 0x5 ; } else { if ( op -> operands [ 1 ] . offset > 127 ) { data [ l ++ ] = 0x80 | op -> operands [ 0 ] . reg << 3 | op -> operands [ 1 ] . regs [ 0 ] ; } else { data [ l ++ ] = 0x40 | op -> operands [ 1 ] . regs [ 0 ] ; } } if ( op -> operands [ 1 ] . offset > 127 ) { mod = 0x1 ; } } else { if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_EIP && ( op -> operands [ 0 ] . type & OT_DWORD ) ) { data [ l ++ ] = 0x0d ; } else if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP && ( op -> operands [ 0 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x05 ; } else { data [ l ++ ] = mod << 5 | op -> operands [ 0 ] . reg << 3 | op -> operands [ 1 ] . regs [ 0 ] ; } } if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_ESP ) { data [ l ++ ] = 0x24 ; } if ( mod >= 0x2 ) { data [ l ++ ] = offset ; if ( op -> operands [ 1 ] . offset > 128 || op -> operands [ 1 ] . regs [ 0 ] == X86R_EIP ) { data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } } else if ( a -> bits == 64 && ( offset || op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP ) ) { data [ l ++ ] = offset ; if ( op -> operands [ 1 ] . offset > 127 || op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP ) { data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } } } } return l ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ 0 ] % 6 <S2SV_ModStart> = 0x8b ; data [ l ++ ] = ( ( ( ut32 ) op -> operands [ 0 ] . reg ) << 3 ) | 0x5 ; data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; return l ; } if ( a -> bits == 64 ) { if ( op -> operands [ 0 ] . type & OT_QWORD ) { if ( ! ( op -> operands [ 1 ] . type & OT_QWORD ) ) { if ( op -> operands [ 1 ] . regs [ 0 ] != - 1 ) { data [ l ++ ] = 0x67 ; } data [ l ++ ] = 0x48 ; } } else if ( op -> operands [ 1 ] . type & OT_DWORD ) { data [ l ++ ] = 0x44 ; } else if ( ! ( op -> operands [ 1 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x67 ; } if ( op -> operands [ 1 ] . type & OT_QWORD && op -> operands [ 0 ] . type & OT_QWORD ) { data [ l ++ ] = 0x48 ; } } if ( op -> operands [ 0 ] . type & OT_WORD ) { data [ l ++ ] = 0x66 ; data [ l ++ ] = op -> operands [ 1 ] . type & OT_BYTE ? 0x8a : 0x8b ; } else { data [ l ++ ] = ( op -> operands [ 1 ] . type & OT_BYTE || op -> operands [ 0 ] . type & OT_BYTE ) ? 0x8a : 0x8b ; } if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_UNDEFINED ) { if ( a -> bits == 64 ) { data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 0x4 ; data [ l ++ ] = 0x25 ; } else { <S2SV_ModStart> | 0x5 ; } <S2SV_ModStart> >> 24 ; } else { if ( op -> operands [ 1 ] . scale [ 0 ] > 1 ) { data [ l ++ ] = op -> operands [ 0 ] . reg << 3 | 4 ; if ( op -> operands [ 1 ] . scale [ 0 ] >= 2 ) { base = 5 ; } if ( base ) { data [ l ++ ] = getsib ( op -> operands [ 1 ] . scale [ 0 ] ) << 6 | op -> operands [ 1 ] . regs [ 0 ] << 3 | base ; } else { data [ l ++ ] = getsib ( op -> operands [ 1 ] . scale [ 0 ] ) << 3 | op -> operands [ 1 ] . regs [ 0 ] ; } if ( offset || base ) { data [ l ++ ] = offset ; data [ l ++ ] = offset >> 8 ; data [ l ++ ] = offset >> 16 ; data [ l ++ ] = offset >> 24 ; } <S2SV_ModStart> } if ( op -> operands [ 1 ] . regs [ 1 ] != X86R_UNDEFINED <S2SV_ModEnd> ) { data <S2SV_ModStart> ++ ] = op -> operands [ 1 ] . regs [ 1 ] << 3 | op -> operands [ 1 ] . regs [ 0 ] ; return l ; } if ( offset || op -> operands [ 1 ] . regs [ 0 ] == X86R_EBP ) { mod = 0x2 ; if ( op -> operands [ 1 ] . offset > 127 ) { mod = 0x4 ; } } if ( a -> bits == 64 && offset && op -> operands [ 0 ] . type & OT_QWORD ) { if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP ) { data [ l ++ ] = 0x5 <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { if ( op -> operands [ 1 ] . offset > 127 ) { data [ l ++ ] = 0x80 | <S2SV_ModEnd> op -> operands <S2SV_ModStart> << 3 | op -> operands [ 1 ] . regs [ 0 ] <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { data [ l ++ ] = 0x40 | op -> operands [ 1 ] . regs [ 0 ] ; } } if ( op -> operands [ 1 ] . offset > 127 ) { mod = 0x1 ; } } else { if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_EIP && ( op -> operands [ 0 ] . type & OT_DWORD ) ) { data [ l ++ ] = 0x0d ; } else if ( op -> operands [ 1 ] . regs [ 0 ] == X86R_RIP && ( op -> operands [ 0 ] . type & OT_QWORD ) ) { data [ l ++ ] = 0x05 ; } else { data [ l ++ ] = mod << 5 | <S2SV_ModEnd> op -> operands <S2SV_ModStart> << 3 | <S2SV_ModEnd> op -> operands\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8369\n\n```\nCWE-189 static pfn_t kvm_pin_pages ( struct kvm_memory_slot * slot , gfn_t gfn , <S2SV_StartBug> unsigned long size ) <S2SV_EndBug> { gfn_t end_gfn ; pfn_t pfn ; pfn = gfn_to_pfn_memslot ( slot , gfn ) ; <S2SV_StartBug> end_gfn = gfn + ( size >> PAGE_SHIFT ) ; <S2SV_EndBug> gfn += 1 ; if ( is_error_noslot_pfn ( pfn ) ) return pfn ; while ( gfn < end_gfn ) gfn_to_pfn_memslot ( slot , gfn ++ ) ; return pfn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , unsigned long npages <S2SV_ModEnd> ) { gfn_t <S2SV_ModStart> = gfn + npages <S2SV_ModEnd> ; gfn +=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 int cib_remote_listen ( gpointer data ) { <S2SV_StartBug> int lpc = 0 ; <S2SV_EndBug> int csock = 0 ; <S2SV_StartBug> unsigned laddr ; <S2SV_EndBug> time_t now = 0 ; time_t start = time ( NULL ) ; struct sockaddr_in addr ; int ssock = * ( int * ) data ; <S2SV_StartBug> # ifdef HAVE_GNUTLS_GNUTLS_H <S2SV_EndBug> gnutls_session * session = NULL ; # endif cib_client_t * new_client = NULL ; <S2SV_StartBug> xmlNode * login = NULL ; <S2SV_EndBug> const char * user = NULL ; const char * pass = NULL ; const char * tmp = NULL ; # ifdef HAVE_DECL_NANOSLEEP const struct timespec sleepfast = { 0 , 10000000 } ; # endif static struct mainloop_fd_callbacks remote_client_fd_callbacks = { . dispatch = cib_remote_msg , . destroy = cib_remote_connection_destroy , } ; laddr = sizeof ( addr ) ; csock = accept ( ssock , ( struct sockaddr * ) & addr , & laddr ) ; crm_debug ( \"New<S2SV_blank>%s<S2SV_blank>connection<S2SV_blank>from<S2SV_blank>%s\" , ssock == remote_tls_fd ? \"secure\" : \"clear-text\" , inet_ntoa ( addr . sin_addr ) ) ; if ( csock == - 1 ) { crm_err ( \"accept<S2SV_blank>socket<S2SV_blank>failed\" ) ; return TRUE ; } <S2SV_StartBug> if ( ssock == remote_tls_fd ) { <S2SV_EndBug> # ifdef HAVE_GNUTLS_GNUTLS_H <S2SV_StartBug> session = create_tls_session ( csock , GNUTLS_SERVER ) ; <S2SV_EndBug> if ( session == NULL ) { crm_err ( \"TLS<S2SV_blank>session<S2SV_blank>creation<S2SV_blank>failed\" ) ; close ( csock ) ; return TRUE ; } # endif } <S2SV_StartBug> do { <S2SV_EndBug> crm_trace ( \"Iter:<S2SV_blank>%d\" , lpc ++ ) ; if ( ssock == remote_tls_fd ) { # ifdef HAVE_GNUTLS_GNUTLS_H <S2SV_StartBug> login = crm_recv_remote_msg ( session , TRUE ) ; <S2SV_EndBug> # endif } else { <S2SV_StartBug> login = crm_recv_remote_msg ( GINT_TO_POINTER ( csock ) , FALSE ) ; <S2SV_EndBug> } if ( login != NULL ) { break ; } # ifdef HAVE_DECL_NANOSLEEP nanosleep ( & sleepfast , NULL ) ; # else sleep ( 1 ) ; # endif now = time ( NULL ) ; } while ( login == NULL && ( start - now ) < 4 ) ; crm_log_xml_info ( login , \"Login:<S2SV_blank>\" ) ; if ( login == NULL ) { goto bail ; } tmp = crm_element_name ( login ) ; if ( safe_str_neq ( tmp , \"cib_command\" ) ) { crm_err ( \"Wrong<S2SV_blank>tag:<S2SV_blank>%s\" , tmp ) ; goto bail ; } tmp = crm_element_value ( login , \"op\" ) ; if ( safe_str_neq ( tmp , \"authenticate\" ) ) { crm_err ( \"Wrong<S2SV_blank>operation:<S2SV_blank>%s\" , tmp ) ; goto bail ; } user = crm_element_value ( login , \"user\" ) ; pass = crm_element_value ( login , \"password\" ) ; if ( check_group_membership ( user , CRM_DAEMON_GROUP ) == FALSE ) { crm_err ( \"User<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>member<S2SV_blank>of<S2SV_blank>the<S2SV_blank>required<S2SV_blank>group\" ) ; goto bail ; } else if ( authenticate_user ( user , pass ) == FALSE ) { crm_err ( \"PAM<S2SV_blank>auth<S2SV_blank>failed\" ) ; goto bail ; } num_clients ++ ; new_client = calloc ( 1 , sizeof ( cib_client_t ) ) ; new_client -> name = crm_element_value_copy ( login , \"name\" ) ; CRM_CHECK ( new_client -> id == NULL , free ( new_client -> id ) ) ; new_client -> id = crm_generate_uuid ( ) ; # if ENABLE_ACL new_client -> user = strdup ( user ) ; # endif new_client -> callback_id = NULL ; if ( ssock == remote_tls_fd ) { # ifdef HAVE_GNUTLS_GNUTLS_H new_client -> encrypted = TRUE ; new_client -> session = session ; # endif } else { new_client -> session = GINT_TO_POINTER ( csock ) ; } free_xml ( login ) ; login = create_xml_node ( NULL , \"cib_result\" ) ; crm_xml_add ( login , F_CIB_OPERATION , CRM_OP_REGISTER ) ; crm_xml_add ( login , F_CIB_CLIENTID , new_client -> id ) ; crm_send_remote_msg ( new_client -> session , login , new_client -> encrypted ) ; free_xml ( login ) ; new_client -> remote = mainloop_add_fd ( \"cib-remote-client\" , G_PRIORITY_DEFAULT , csock , new_client , & remote_client_fd_callbacks ) ; g_hash_table_insert ( client_list , new_client -> id , new_client ) ; return TRUE ; <S2SV_StartBug> bail : <S2SV_EndBug> if ( ssock == remote_tls_fd ) { # ifdef HAVE_GNUTLS_GNUTLS_H gnutls_bye ( * session , GNUTLS_SHUT_RDWR ) ; gnutls_deinit ( * session ) ; gnutls_free ( session ) ; # endif } close ( csock ) ; free_xml ( login ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { int <S2SV_ModEnd> csock = 0 <S2SV_ModStart> ; unsigned laddr <S2SV_ModEnd> ; struct sockaddr_in <S2SV_ModStart> ) data ; int flag ; <S2SV_ModStart> = NULL ; <S2SV_ModEnd> static struct mainloop_fd_callbacks <S2SV_ModStart> } if ( ( flag = fcntl ( csock , F_GETFL ) ) >= 0 ) { if ( fcntl ( csock , F_SETFL , flag | O_NONBLOCK ) < 0 ) { crm_err ( \"fcntl()<S2SV_blank>write<S2SV_blank>failed\" ) ; close ( csock ) ; return TRUE ; } } else { crm_err ( \"fcntl()<S2SV_blank>read<S2SV_blank>failed\" ) ; close ( csock ) ; return TRUE ; } if ( <S2SV_ModStart> HAVE_GNUTLS_GNUTLS_H session = crm_create_anon_tls_session <S2SV_ModEnd> ( csock , <S2SV_ModStart> csock , GNUTLS_SERVER , anon_cred_s <S2SV_ModStart> # endif } num_clients ++ ; new_client = calloc ( 1 , sizeof ( cib_client_t ) ) ; new_client -> id = crm_generate_uuid ( ) ; new_client -> callback_id = NULL ; new_client -> remote_auth_timeout = g_timeout_add ( REMOTE_AUTH_TIMEOUT , remote_auth_timeout_cb , new_client <S2SV_ModEnd> ) ; if <S2SV_ModStart> # ifdef HAVE_GNUTLS_GNUTLS_H new_client -> encrypted = TRUE ; new_client -> session = session <S2SV_ModEnd> ; # endif <S2SV_ModStart> } else { new_client -> session = <S2SV_ModEnd> GINT_TO_POINTER ( csock <S2SV_ModStart> ( csock ) ; } <S2SV_ModEnd> new_client -> remote <S2SV_ModStart> return TRUE ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1331\n\n```\nCWE-59 int main ( int argc , char * argv [ ] ) { int ret ; struct lxc_lock * lock ; lock = lxc_newlock ( NULL , NULL ) ; if ( ! lock ) { fprintf ( stderr , \"%d:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>unnamed<S2SV_blank>lock\\\\n\" , __LINE__ ) ; exit ( 1 ) ; } ret = lxclock ( lock , 0 ) ; if ( ret ) { fprintf ( stderr , \"%d:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>take<S2SV_blank>unnamed<S2SV_blank>lock<S2SV_blank>(%d)\\\\n\" , __LINE__ , ret ) ; exit ( 1 ) ; } ret = lxcunlock ( lock ) ; if ( ret ) { fprintf ( stderr , \"%d:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>put<S2SV_blank>unnamed<S2SV_blank>lock<S2SV_blank>(%d)\\\\n\" , __LINE__ , ret ) ; exit ( 1 ) ; } lxc_putlock ( lock ) ; lock = lxc_newlock ( \"/var/lib/lxc\" , mycontainername ) ; if ( ! lock ) { fprintf ( stderr , \"%d:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>lock\\\\n\" , __LINE__ ) ; exit ( 1 ) ; } struct stat sb ; <S2SV_StartBug> char * pathname = RUNTIME_PATH \"/lock/lxc/var/lib/lxc/\" ; <S2SV_EndBug> ret = stat ( pathname , & sb ) ; if ( ret != 0 ) { fprintf ( stderr , \"%d:<S2SV_blank>filename<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>created\\\\n\" , __LINE__ , pathname ) ; exit ( 1 ) ; } lxc_putlock ( lock ) ; test_two_locks ( ) ; fprintf ( stderr , \"all<S2SV_blank>tests<S2SV_blank>passed\\\\n\" ) ; exit ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pathname = RUNTIME_PATH \"/lxc/lock/var/lib/lxc/\" <S2SV_ModEnd> ; ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7566\n\n```\nCWE-000 static int clie_5_attach ( struct usb_serial * serial ) { struct usb_serial_port * port ; unsigned int pipe ; int j ; <S2SV_StartBug> if ( serial -> num_ports < 2 ) <S2SV_EndBug> return - 1 ; port = serial -> port [ 0 ] ; port -> bulk_out_endpointAddress = serial -> port [ 1 ] -> bulk_out_endpointAddress ; pipe = usb_sndbulkpipe ( serial -> dev , port -> bulk_out_endpointAddress ) ; for ( j = 0 ; j < ARRAY_SIZE ( port -> write_urbs ) ; ++ j ) port -> write_urbs [ j ] -> pipe = pipe ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( serial -> num_bulk_out <S2SV_ModEnd> < 2 ) <S2SV_ModStart> < 2 ) { dev_err ( & serial -> interface -> dev , \"missing<S2SV_blank>bulk<S2SV_blank>out<S2SV_blank>endpoints\\\\n\" ) ; return - ENODEV ; } <S2SV_ModEnd> port = serial\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4002\n\n```\nCWE-119 static void oz_usb_handle_ep_data ( struct oz_usb_ctx * usb_ctx , struct oz_usb_hdr * usb_hdr , int len ) { struct oz_data * data_hdr = ( struct oz_data * ) usb_hdr ; switch ( data_hdr -> format ) { case OZ_DATA_F_MULTIPLE_FIXED : { struct oz_multiple_fixed * body = ( struct oz_multiple_fixed * ) data_hdr ; u8 * data = body -> data ; <S2SV_StartBug> int n ; <S2SV_EndBug> <S2SV_StartBug> if ( ! body -> unit_size ) <S2SV_EndBug> break ; <S2SV_StartBug> n = ( len - sizeof ( struct oz_multiple_fixed ) + 1 ) <S2SV_EndBug> / body -> unit_size ; while ( n -- ) { oz_hcd_data_ind ( usb_ctx -> hport , body -> endpoint , data , body -> unit_size ) ; data += body -> unit_size ; } } break ; case OZ_DATA_F_ISOC_FIXED : { struct oz_isoc_fixed * body = ( struct oz_isoc_fixed * ) data_hdr ; int data_len = len - sizeof ( struct oz_isoc_fixed ) + 1 ; int unit_size = body -> unit_size ; u8 * data = body -> data ; int count ; int i ; if ( ! unit_size ) break ; count = data_len / unit_size ; for ( i = 0 ; i < count ; i ++ ) { oz_hcd_data_ind ( usb_ctx -> hport , body -> endpoint , data , unit_size ) ; data += unit_size ; } } break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> data ; unsigned <S2SV_ModStart> body -> unit_size || len < sizeof ( struct oz_multiple_fixed ) - 1 <S2SV_ModStart> ( len - ( <S2SV_ModStart> struct oz_multiple_fixed ) - 1 ) <S2SV_ModEnd> ) / body\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 static void print_buttons ( HttpRequest req , HttpResponse res , Service_T s ) { if ( is_readonly ( req ) ) { return ; } StringBuffer_append ( res -> outputbuffer , \"<table<S2SV_blank>id=\\'buttons\\'><tr>\" ) ; if ( s -> start ) StringBuffer_append ( res -> outputbuffer , <S2SV_StartBug> \"<td><form<S2SV_blank>method=POST<S2SV_blank>action=%s>\" <S2SV_EndBug> \"<input<S2SV_blank>type=hidden<S2SV_blank>value=\\'start\\'<S2SV_blank>name=action>\" \"<input<S2SV_blank>type=submit<S2SV_blank>value=\\'Start<S2SV_blank>service\\'></form></td>\" , s -> name ) ; if ( s -> stop ) StringBuffer_append ( res -> outputbuffer , <S2SV_StartBug> \"<td><form<S2SV_blank>method=POST<S2SV_blank>action=%s>\" <S2SV_EndBug> \"<input<S2SV_blank>type=hidden<S2SV_blank>value=\\'stop\\'<S2SV_blank>name=action>\" \"<input<S2SV_blank>type=submit<S2SV_blank>value=\\'Stop<S2SV_blank>service\\'></form></td>\" , s -> name ) ; if ( ( s -> start && s -> stop ) || s -> restart ) StringBuffer_append ( res -> outputbuffer , <S2SV_StartBug> \"<td><form<S2SV_blank>method=POST<S2SV_blank>action=%s>\" <S2SV_EndBug> \"<input<S2SV_blank>type=hidden<S2SV_blank>value=\\'restart\\'<S2SV_blank>name=action>\" \"<input<S2SV_blank>type=submit<S2SV_blank>value=\\'Restart<S2SV_blank>service\\'></form></td>\" , s -> name ) ; StringBuffer_append ( res -> outputbuffer , \"<td><form<S2SV_blank>method=POST<S2SV_blank>action=%s>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>value=\\'%s\\'<S2SV_blank>name=action>\" \"<input<S2SV_blank>type=submit<S2SV_blank>value=\\'%s\\'></form></td></tr></table>\" , s -> name , s -> monitor ? \"unmonitor\" : \"monitor\" , s -> monitor ? \"Disable<S2SV_blank>monitoring\" : \"Enable<S2SV_blank>monitoring\" ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> outputbuffer , \"<td>\" \"<form<S2SV_blank>method=POST<S2SV_blank>action=%s>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>name=\\'securitytoken\\'<S2SV_blank>value=\\'%s\\'>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>value=\\'start\\'<S2SV_blank>name=action>\" \"<input<S2SV_blank>type=submit<S2SV_blank>value=\\'Start<S2SV_blank>service\\'>\" \"</form>\" \"</td>\" , s -> name , res -> token <S2SV_ModEnd> ) ; if <S2SV_ModStart> -> outputbuffer , \"<td>\" \"<form<S2SV_blank>method=POST<S2SV_blank>action=%s>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>name=\\'securitytoken\\'<S2SV_blank>value=\\'%s\\'>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>value=\\'stop\\'<S2SV_blank>name=action>\" \"<input<S2SV_blank>type=submit<S2SV_blank>value=\\'Stop<S2SV_blank>service\\'>\" \"</form>\" \"</td>\" , s -> name , res -> token <S2SV_ModEnd> ) ; if <S2SV_ModStart> -> outputbuffer , \"<td>\" \"<form<S2SV_blank>method=POST<S2SV_blank>action=%s>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>name=\\'securitytoken\\'<S2SV_blank>value=\\'%s\\'>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>value=\\'restart\\'<S2SV_blank>name=action>\" \"<input<S2SV_blank>type=submit<S2SV_blank>value=\\'Restart<S2SV_blank>service\\'>\" \"</form>\" \"</td>\" , s -> name , res -> token ) ; StringBuffer_append ( res -> outputbuffer , \"<td>\" \"<form<S2SV_blank>method=POST<S2SV_blank>action=%s>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>name=\\'securitytoken\\'<S2SV_blank>value=\\'%s\\'>\" \"<input<S2SV_blank>type=hidden<S2SV_blank>value=\\'%s\\'<S2SV_blank>name=action>\" \"<input<S2SV_blank>type=submit<S2SV_blank>value=\\'%s\\'>\" \"</form>\" \"</td>\" , s -> name , res -> token <S2SV_ModEnd> , s -> <S2SV_ModStart> \"Enable<S2SV_blank>monitoring\" ) ; StringBuffer_append ( res -> outputbuffer , \"</tr></table>\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 void setattr_copy ( struct inode * inode , const struct iattr * attr ) { unsigned int ia_valid = attr -> ia_valid ; if ( ia_valid & ATTR_UID ) inode -> i_uid = attr -> ia_uid ; if ( ia_valid & ATTR_GID ) inode -> i_gid = attr -> ia_gid ; if ( ia_valid & ATTR_ATIME ) inode -> i_atime = timespec_trunc ( attr -> ia_atime , inode -> i_sb -> s_time_gran ) ; if ( ia_valid & ATTR_MTIME ) inode -> i_mtime = timespec_trunc ( attr -> ia_mtime , inode -> i_sb -> s_time_gran ) ; if ( ia_valid & ATTR_CTIME ) inode -> i_ctime = timespec_trunc ( attr -> ia_ctime , inode -> i_sb -> s_time_gran ) ; if ( ia_valid & ATTR_MODE ) { umode_t mode = attr -> ia_mode ; if ( ! in_group_p ( inode -> i_gid ) && <S2SV_StartBug> ! inode_capable ( inode , CAP_FSETID ) ) <S2SV_EndBug> mode &= ~ S_ISGID ; inode -> i_mode = mode ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) && ! capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6418\n\n```\nCWE-399 static int ceph_x_decrypt ( struct ceph_crypto_key * secret , <S2SV_StartBug> void * * p , void * end , void * obuf , size_t olen ) <S2SV_EndBug> { struct ceph_x_encrypt_header head ; size_t head_len = sizeof ( head ) ; int len , ret ; len = ceph_decode_32 ( p ) ; if ( * p + len > end ) return - EINVAL ; dout ( \"ceph_x_decrypt<S2SV_blank>len<S2SV_blank>%d\\\\n\" , len ) ; <S2SV_StartBug> ret = ceph_decrypt2 ( secret , & head , & head_len , obuf , & olen , <S2SV_EndBug> * p , len ) ; if ( ret ) return ret ; if ( head . struct_v != 1 || le64_to_cpu ( head . magic ) != CEPHX_ENC_MAGIC ) return - EPERM ; * p += len ; return olen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> end , void * <S2SV_ModStart> len ) ; if ( * obuf == NULL ) { * obuf = kmalloc ( len , GFP_NOFS ) ; if ( ! * obuf ) return - ENOMEM ; olen = len ; } <S2SV_ModStart> & head_len , *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 <S2SV_StartBug> static void ptrace_triggered ( struct perf_event * bp , int nmi , <S2SV_EndBug> struct perf_sample_data * data , struct pt_regs * regs ) { int i ; struct thread_struct * thread = & ( current -> thread ) ; for ( i = 0 ; i < HBP_NUM ; i ++ ) { if ( thread -> ptrace_bps [ i ] == bp ) break ; } thread -> debugreg6 |= ( DR_TRAP0 << i ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event * bp <S2SV_ModEnd> , struct perf_sample_data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14463\n\n```\nCWE-125 int modbus_reply ( modbus_t * ctx , const uint8_t * req , int req_length , modbus_mapping_t * mb_mapping ) { int offset ; int slave ; int function ; uint16_t address ; uint8_t rsp [ MAX_MESSAGE_LENGTH ] ; int rsp_length = 0 ; sft_t sft ; if ( ctx == NULL ) { errno = EINVAL ; return - 1 ; } offset = ctx -> backend -> header_length ; slave = req [ offset - 1 ] ; function = req [ offset ] ; address = ( req [ offset + 1 ] << 8 ) + req [ offset + 2 ] ; sft . slave = slave ; sft . function = function ; sft . t_id = ctx -> backend -> prepare_response_tid ( req , & req_length ) ; switch ( function ) { case MODBUS_FC_READ_COILS : case MODBUS_FC_READ_DISCRETE_INPUTS : { unsigned int is_input = ( function == MODBUS_FC_READ_DISCRETE_INPUTS ) ; int start_bits = is_input ? mb_mapping -> start_input_bits : mb_mapping -> start_bits ; int nb_bits = is_input ? mb_mapping -> nb_input_bits : mb_mapping -> nb_bits ; uint8_t * tab_bits = is_input ? mb_mapping -> tab_input_bits : mb_mapping -> tab_bits ; const char * const name = is_input ? \"read_input_bits\" : \"read_bits\" ; int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; int mapping_address = address - start_bits ; if ( nb < 1 || MODBUS_MAX_READ_BITS < nb ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>nb<S2SV_blank>of<S2SV_blank>values<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , nb , name , MODBUS_MAX_READ_BITS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > nb_bits ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>%s\\\\n\" , mapping_address < 0 ? address : address + nb , name ) ; } else { rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; rsp [ rsp_length ++ ] = ( nb / 8 ) + ( ( nb % 8 ) ? 1 : 0 ) ; rsp_length = response_io_status ( tab_bits , mapping_address , nb , rsp , rsp_length ) ; } } break ; case MODBUS_FC_READ_HOLDING_REGISTERS : case MODBUS_FC_READ_INPUT_REGISTERS : { unsigned int is_input = ( function == MODBUS_FC_READ_INPUT_REGISTERS ) ; int start_registers = is_input ? mb_mapping -> start_input_registers : mb_mapping -> start_registers ; int nb_registers = is_input ? mb_mapping -> nb_input_registers : mb_mapping -> nb_registers ; uint16_t * tab_registers = is_input ? mb_mapping -> tab_input_registers : mb_mapping -> tab_registers ; const char * const name = is_input ? \"read_input_registers\" : \"read_registers\" ; int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; int mapping_address = address - start_registers ; if ( nb < 1 || MODBUS_MAX_READ_REGISTERS < nb ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>nb<S2SV_blank>of<S2SV_blank>values<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , nb , name , MODBUS_MAX_READ_REGISTERS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>%s\\\\n\" , mapping_address < 0 ? address : address + nb , name ) ; } else { int i ; rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; rsp [ rsp_length ++ ] = nb << 1 ; for ( i = mapping_address ; i < mapping_address + nb ; i ++ ) { rsp [ rsp_length ++ ] = tab_registers [ i ] >> 8 ; rsp [ rsp_length ++ ] = tab_registers [ i ] & 0xFF ; } } } break ; case MODBUS_FC_WRITE_SINGLE_COIL : { int mapping_address = address - mb_mapping -> start_bits ; if ( mapping_address < 0 || mapping_address >= mb_mapping -> nb_bits ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_bit\\\\n\" , address ) ; } else { int data = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; if ( data == 0xFF00 || data == 0x0 ) { mb_mapping -> tab_bits [ mapping_address ] = data ? ON : OFF ; memcpy ( rsp , req , req_length ) ; rsp_length = req_length ; } else { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>value<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_bit<S2SV_blank>request<S2SV_blank>at<S2SV_blank>address<S2SV_blank>%0X\\\\n\" , data , address ) ; } } } break ; case MODBUS_FC_WRITE_SINGLE_REGISTER : { int mapping_address = address - mb_mapping -> start_registers ; if ( mapping_address < 0 || mapping_address >= mb_mapping -> nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_register\\\\n\" , address ) ; } else { int data = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; mb_mapping -> tab_registers [ mapping_address ] = data ; memcpy ( rsp , req , req_length ) ; rsp_length = req_length ; } } break ; case MODBUS_FC_WRITE_MULTIPLE_COILS : { int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; <S2SV_StartBug> int mapping_address = address - mb_mapping -> start_bits ; <S2SV_EndBug> <S2SV_StartBug> if ( nb < 1 || MODBUS_MAX_WRITE_BITS < nb ) { <S2SV_EndBug> rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>number<S2SV_blank>of<S2SV_blank>values<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>write_bits<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , nb , MODBUS_MAX_WRITE_BITS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > mb_mapping -> nb_bits ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_bits\\\\n\" , mapping_address < 0 ? address : address + nb ) ; } else { modbus_set_bits_from_bytes ( mb_mapping -> tab_bits , mapping_address , nb , & req [ offset + 6 ] ) ; rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; memcpy ( rsp + rsp_length , req + rsp_length , 4 ) ; rsp_length += 4 ; } } break ; case MODBUS_FC_WRITE_MULTIPLE_REGISTERS : { <S2SV_StartBug> int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; <S2SV_EndBug> int mapping_address = address - mb_mapping -> start_registers ; <S2SV_StartBug> if ( nb < 1 || MODBUS_MAX_WRITE_REGISTERS < nb ) { <S2SV_EndBug> rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>number<S2SV_blank>of<S2SV_blank>values<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>write_registers<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , nb , MODBUS_MAX_WRITE_REGISTERS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > mb_mapping -> nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_registers\\\\n\" , mapping_address < 0 ? address : address + nb ) ; } else { int i , j ; for ( i = mapping_address , j = 6 ; i < mapping_address + nb ; i ++ , j += 2 ) { mb_mapping -> tab_registers [ i ] = ( req [ offset + j ] << 8 ) + req [ offset + j + 1 ] ; } rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; memcpy ( rsp + rsp_length , req + rsp_length , 4 ) ; rsp_length += 4 ; } } break ; case MODBUS_FC_REPORT_SLAVE_ID : { int str_len ; int byte_count_pos ; rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; byte_count_pos = rsp_length ++ ; rsp [ rsp_length ++ ] = _REPORT_SLAVE_ID ; rsp [ rsp_length ++ ] = 0xFF ; str_len = 3 + strlen ( LIBMODBUS_VERSION_STRING ) ; memcpy ( rsp + rsp_length , \"LMB\" LIBMODBUS_VERSION_STRING , str_len ) ; rsp_length += str_len ; rsp [ byte_count_pos ] = rsp_length - byte_count_pos - 1 ; } break ; case MODBUS_FC_READ_EXCEPTION_STATUS : if ( ctx -> debug ) { fprintf ( stderr , \"FIXME<S2SV_blank>Not<S2SV_blank>implemented\\\\n\" ) ; } errno = ENOPROTOOPT ; return - 1 ; break ; case MODBUS_FC_MASK_WRITE_REGISTER : { int mapping_address = address - mb_mapping -> start_registers ; if ( mapping_address < 0 || mapping_address >= mb_mapping -> nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>in<S2SV_blank>write_register\\\\n\" , address ) ; } else { uint16_t data = mb_mapping -> tab_registers [ mapping_address ] ; uint16_t and = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; uint16_t or = ( req [ offset + 5 ] << 8 ) + req [ offset + 6 ] ; data = ( data & and ) | ( or & ( ~ and ) ) ; mb_mapping -> tab_registers [ mapping_address ] = data ; memcpy ( rsp , req , req_length ) ; rsp_length = req_length ; } } break ; case MODBUS_FC_WRITE_AND_READ_REGISTERS : { int nb = ( req [ offset + 3 ] << 8 ) + req [ offset + 4 ] ; uint16_t address_write = ( req [ offset + 5 ] << 8 ) + req [ offset + 6 ] ; int nb_write = ( req [ offset + 7 ] << 8 ) + req [ offset + 8 ] ; int nb_write_bytes = req [ offset + 9 ] ; int mapping_address = address - mb_mapping -> start_registers ; int mapping_address_write = address_write - mb_mapping -> start_registers ; if ( nb_write < 1 || MODBUS_MAX_WR_WRITE_REGISTERS < nb_write || nb < 1 || MODBUS_MAX_WR_READ_REGISTERS < nb || nb_write_bytes != nb_write * 2 ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_VALUE , rsp , TRUE , \"Illegal<S2SV_blank>nb<S2SV_blank>of<S2SV_blank>values<S2SV_blank>(W%d,<S2SV_blank>R%d)<S2SV_blank>in<S2SV_blank>write_and_read_registers<S2SV_blank>(max<S2SV_blank>W%d,<S2SV_blank>R%d)\\\\n\" , nb_write , nb , MODBUS_MAX_WR_WRITE_REGISTERS , MODBUS_MAX_WR_READ_REGISTERS ) ; } else if ( mapping_address < 0 || ( mapping_address + nb ) > mb_mapping -> nb_registers || mapping_address < 0 || ( mapping_address_write + nb_write ) > mb_mapping -> nb_registers ) { rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_DATA_ADDRESS , rsp , FALSE , \"Illegal<S2SV_blank>data<S2SV_blank>read<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>or<S2SV_blank>write<S2SV_blank>address<S2SV_blank>0x%0X<S2SV_blank>write_and_read_registers\\\\n\" , mapping_address < 0 ? address : address + nb , mapping_address_write < 0 ? address_write : address_write + nb_write ) ; } else { int i , j ; rsp_length = ctx -> backend -> build_response_basis ( & sft , rsp ) ; rsp [ rsp_length ++ ] = nb << 1 ; for ( i = mapping_address_write , j = 10 ; i < mapping_address_write + nb_write ; i ++ , j += 2 ) { mb_mapping -> tab_registers [ i ] = ( req [ offset + j ] << 8 ) + req [ offset + j + 1 ] ; } for ( i = mapping_address ; i < mapping_address + nb ; i ++ ) { rsp [ rsp_length ++ ] = mb_mapping -> tab_registers [ i ] >> 8 ; rsp [ rsp_length ++ ] = mb_mapping -> tab_registers [ i ] & 0xFF ; } } } break ; default : rsp_length = response_exception ( ctx , & sft , MODBUS_EXCEPTION_ILLEGAL_FUNCTION , rsp , TRUE , \"Unknown<S2SV_blank>Modbus<S2SV_blank>function<S2SV_blank>code:<S2SV_blank>0x%0X\\\\n\" , function ) ; break ; } return ( ctx -> backend -> backend_type == _MODBUS_BACKEND_TYPE_RTU && slave == MODBUS_BROADCAST_ADDRESS ) ? 0 : send_msg ( ctx , rsp , rsp_length ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ; int nb_bits = req [ offset + 5 ] ; int <S2SV_ModStart> MODBUS_MAX_WRITE_BITS < nb || nb_bits * 8 < nb <S2SV_ModStart> offset + 4 ] ; int nb_bytes = req [ offset + 5 <S2SV_ModStart> 1 || MODBUS_MAX_WRITE_REGISTERS < nb || nb_bytes * 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11815\n\n```\nCWE-362 static void rds_tcp_kill_sock ( struct net * net ) { struct rds_tcp_connection * tc , * _tc ; LIST_HEAD ( tmp_list ) ; struct rds_tcp_net * rtn = net_generic ( net , rds_tcp_netid ) ; struct socket * lsock = rtn -> rds_tcp_listen_sock ; rtn -> rds_tcp_listen_sock = NULL ; rds_tcp_listen_stop ( lsock , & rtn -> rds_tcp_accept_w ) ; spin_lock_irq ( & rds_tcp_conn_lock ) ; list_for_each_entry_safe ( tc , _tc , & rds_tcp_conn_list , t_tcp_node ) { struct net * c_net = read_pnet ( & tc -> t_cpath -> cp_conn -> c_net ) ; <S2SV_StartBug> if ( net != c_net || ! tc -> t_sock ) <S2SV_EndBug> continue ; if ( ! list_has_conn ( & tmp_list , tc -> t_cpath -> cp_conn ) ) { list_move_tail ( & tc -> t_tcp_node , & tmp_list ) ; } else { list_del ( & tc -> t_tcp_node ) ; tc -> t_tcp_node_detached = true ; } } spin_unlock_irq ( & rds_tcp_conn_lock ) ; list_for_each_entry_safe ( tc , _tc , & tmp_list , t_tcp_node ) rds_conn_destroy ( tc -> t_cpath -> cp_conn ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> net != c_net <S2SV_ModEnd> ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static void hugetlb_vm_op_close ( struct vm_area_struct * vma ) { struct hstate * h = hstate_vma ( vma ) ; <S2SV_StartBug> struct resv_map * reservations = vma_resv_map ( vma ) ; <S2SV_EndBug> unsigned long reserve ; unsigned long start ; unsigned long end ; if ( reservations ) { start = vma_hugecache_offset ( h , vma , vma -> vm_start ) ; end = vma_hugecache_offset ( h , vma , vma -> vm_end ) ; reserve = ( end - start ) - region_count ( & reservations -> regions , start , end ) ; kref_put ( & reservations -> refs , resv_map_release ) ; if ( reserve ) { hugetlb_acct_memory ( h , - reserve ) ; <S2SV_StartBug> hugetlb_put_quota ( vma -> vm_file -> f_mapping , reserve ) ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> reservations = vma_resv_map ( vma ) ; struct hugepage_subpool * spool = subpool_vma <S2SV_ModStart> reserve ) ; hugepage_subpool_put_pages ( spool <S2SV_ModEnd> , reserve )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2695\n\n```\nCWE-763 static OM_uint32 acc_ctx_hints ( OM_uint32 * minor_status , gss_ctx_id_t * ctx , spnego_gss_cred_id_t spcred , gss_buffer_t * mechListMIC , OM_uint32 * negState , send_token_flag * return_token ) { OM_uint32 tmpmin , ret ; gss_OID_set supported_mechSet ; spnego_gss_ctx_id_t sc = NULL ; * mechListMIC = GSS_C_NO_BUFFER ; supported_mechSet = GSS_C_NO_OID_SET ; * return_token = NO_TOKEN_SEND ; * negState = REJECT ; * minor_status = 0 ; if ( * ctx != GSS_C_NO_CONTEXT ) return GSS_S_DEFECTIVE_TOKEN ; ret = get_negotiable_mechs ( minor_status , spcred , GSS_C_ACCEPT , & supported_mechSet ) ; if ( ret != GSS_S_COMPLETE ) goto cleanup ; ret = make_NegHints ( minor_status , mechListMIC ) ; if ( ret != GSS_S_COMPLETE ) goto cleanup ; <S2SV_StartBug> sc = create_spnego_ctx ( ) ; <S2SV_EndBug> if ( sc == NULL ) { ret = GSS_S_FAILURE ; goto cleanup ; } if ( put_mech_set ( supported_mechSet , & sc -> DER_mechTypes ) < 0 ) { ret = GSS_S_FAILURE ; goto cleanup ; } sc -> internal_mech = GSS_C_NO_OID ; * negState = ACCEPT_INCOMPLETE ; * return_token = INIT_TOKEN_SEND ; sc -> firstpass = 1 ; * ctx = ( gss_ctx_id_t ) sc ; sc = NULL ; ret = GSS_S_COMPLETE ; cleanup : release_spnego_ctx ( & sc ) ; gss_release_oid_set ( & tmpmin , & supported_mechSet ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = create_spnego_ctx ( 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2906\n\n```\nCWE-189 static long pmcraid_ioctl_passthrough ( struct pmcraid_instance * pinstance , unsigned int ioctl_cmd , unsigned int buflen , unsigned long arg ) { struct pmcraid_passthrough_ioctl_buffer * buffer ; struct pmcraid_ioarcb * ioarcb ; struct pmcraid_cmd * cmd ; struct pmcraid_cmd * cancel_cmd ; unsigned long request_buffer ; unsigned long request_offset ; unsigned long lock_flags ; void * ioasa ; u32 ioasc ; int request_size ; int buffer_size ; u8 access , direction ; int rc = 0 ; if ( pinstance -> ioa_reset_in_progress ) { rc = wait_event_interruptible_timeout ( pinstance -> reset_wait_q , ! pinstance -> ioa_reset_in_progress , msecs_to_jiffies ( 10000 ) ) ; if ( ! rc ) return - ETIMEDOUT ; else if ( rc < 0 ) return - ERESTARTSYS ; } if ( pinstance -> ioa_state != IOA_STATE_OPERATIONAL ) { pmcraid_err ( \"IOA<S2SV_blank>is<S2SV_blank>not<S2SV_blank>operational\\\\n\" ) ; return - ENOTTY ; } buffer_size = sizeof ( struct pmcraid_passthrough_ioctl_buffer ) ; buffer = kmalloc ( buffer_size , GFP_KERNEL ) ; if ( ! buffer ) { pmcraid_err ( \"no<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>passthrough<S2SV_blank>buffer\\\\n\" ) ; return - ENOMEM ; } request_offset = offsetof ( struct pmcraid_passthrough_ioctl_buffer , request_buffer ) ; request_buffer = arg + request_offset ; rc = __copy_from_user ( buffer , ( struct pmcraid_passthrough_ioctl_buffer * ) arg , sizeof ( struct pmcraid_passthrough_ioctl_buffer ) ) ; ioasa = ( void * ) ( arg + offsetof ( struct pmcraid_passthrough_ioctl_buffer , ioasa ) ) ; if ( rc ) { pmcraid_err ( \"ioctl:<S2SV_blank>can\\'t<S2SV_blank>copy<S2SV_blank>passthrough<S2SV_blank>buffer\\\\n\" ) ; rc = - EFAULT ; goto out_free_buffer ; } request_size = buffer -> ioarcb . data_transfer_length ; if ( buffer -> ioarcb . request_flags0 & TRANSFER_DIR_WRITE ) { access = VERIFY_READ ; direction = DMA_TO_DEVICE ; } else { access = VERIFY_WRITE ; direction = DMA_FROM_DEVICE ; } if ( request_size > 0 ) { rc = access_ok ( access , arg , request_offset + request_size ) ; if ( ! rc ) { rc = - EFAULT ; goto out_free_buffer ; } } else if ( request_size < 0 ) { rc = - EINVAL ; goto out_free_buffer ; } if ( buffer -> ioarcb . add_cmd_param_length > PMCRAID_ADD_CMD_PARAM_LEN ) { rc = - EINVAL ; goto out_free_buffer ; } cmd = pmcraid_get_free_cmd ( pinstance ) ; if ( ! cmd ) { pmcraid_err ( \"free<S2SV_blank>command<S2SV_blank>block<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available\\\\n\" ) ; rc = - ENOMEM ; goto out_free_buffer ; } cmd -> scsi_cmd = NULL ; ioarcb = & ( cmd -> ioa_cb -> ioarcb ) ; ioarcb -> resource_handle = buffer -> ioarcb . resource_handle ; ioarcb -> data_transfer_length = buffer -> ioarcb . data_transfer_length ; ioarcb -> cmd_timeout = buffer -> ioarcb . cmd_timeout ; ioarcb -> request_type = buffer -> ioarcb . request_type ; ioarcb -> request_flags0 = buffer -> ioarcb . request_flags0 ; ioarcb -> request_flags1 = buffer -> ioarcb . request_flags1 ; memcpy ( ioarcb -> cdb , buffer -> ioarcb . cdb , PMCRAID_MAX_CDB_LEN ) ; if ( buffer -> ioarcb . add_cmd_param_length ) { ioarcb -> add_cmd_param_length = buffer -> ioarcb . add_cmd_param_length ; ioarcb -> add_cmd_param_offset = buffer -> ioarcb . add_cmd_param_offset ; memcpy ( ioarcb -> add_data . u . add_cmd_params , buffer -> ioarcb . add_data . u . add_cmd_params , buffer -> ioarcb . add_cmd_param_length ) ; } ioarcb -> hrrq_id = atomic_add_return ( 1 , & ( pinstance -> last_message_id ) ) % pinstance -> num_hrrq ; if ( request_size ) { rc = pmcraid_build_passthrough_ioadls ( cmd , request_size , direction ) ; if ( rc ) { pmcraid_err ( \"couldn\\'t<S2SV_blank>build<S2SV_blank>passthrough<S2SV_blank>ioadls\\\\n\" ) ; goto out_free_buffer ; <S2SV_StartBug> } <S2SV_EndBug> } if ( direction == DMA_TO_DEVICE && request_size > 0 ) { rc = pmcraid_copy_sglist ( cmd -> sglist , request_buffer , request_size , direction ) ; if ( rc ) { pmcraid_err ( \"failed<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>user<S2SV_blank>buffer\\\\n\" ) ; goto out_free_sglist ; } } cmd -> cmd_done = pmcraid_internal_done ; init_completion ( & cmd -> wait_for_completion ) ; cmd -> completion_req = 1 ; pmcraid_info ( \"command(%d)<S2SV_blank>(CDB[0]<S2SV_blank>=<S2SV_blank>%x)<S2SV_blank>for<S2SV_blank>%x\\\\n\" , le32_to_cpu ( cmd -> ioa_cb -> ioarcb . response_handle ) >> 2 , cmd -> ioa_cb -> ioarcb . cdb [ 0 ] , le32_to_cpu ( cmd -> ioa_cb -> ioarcb . resource_handle ) ) ; spin_lock_irqsave ( pinstance -> host -> host_lock , lock_flags ) ; _pmcraid_fire_command ( cmd ) ; spin_unlock_irqrestore ( pinstance -> host -> host_lock , lock_flags ) ; buffer -> ioarcb . cmd_timeout = 0 ; if ( buffer -> ioarcb . cmd_timeout == 0 ) { wait_for_completion ( & cmd -> wait_for_completion ) ; } else if ( ! wait_for_completion_timeout ( & cmd -> wait_for_completion , msecs_to_jiffies ( buffer -> ioarcb . cmd_timeout * 1000 ) ) ) { pmcraid_info ( \"aborting<S2SV_blank>cmd<S2SV_blank>%d<S2SV_blank>(CDB[0]<S2SV_blank>=<S2SV_blank>%x)<S2SV_blank>due<S2SV_blank>to<S2SV_blank>timeout\\\\n\" , le32_to_cpu ( cmd -> ioa_cb -> ioarcb . response_handle >> 2 ) , cmd -> ioa_cb -> ioarcb . cdb [ 0 ] ) ; spin_lock_irqsave ( pinstance -> host -> host_lock , lock_flags ) ; cancel_cmd = pmcraid_abort_cmd ( cmd ) ; spin_unlock_irqrestore ( pinstance -> host -> host_lock , lock_flags ) ; if ( cancel_cmd ) { wait_for_completion ( & cancel_cmd -> wait_for_completion ) ; ioasc = cancel_cmd -> ioa_cb -> ioasa . ioasc ; pmcraid_return_cmd ( cancel_cmd ) ; if ( ioasc == PMCRAID_IOASC_IOA_WAS_RESET || PMCRAID_IOASC_SENSE_KEY ( ioasc ) == 0x00 ) { if ( ioasc != PMCRAID_IOASC_GC_IOARCB_NOTFOUND ) rc = - ETIMEDOUT ; goto out_handle_response ; } } if ( ! wait_for_completion_timeout ( & cmd -> wait_for_completion , msecs_to_jiffies ( 150 * 1000 ) ) ) { pmcraid_reset_bringup ( cmd -> drv_inst ) ; rc = - ETIMEDOUT ; } } out_handle_response : if ( copy_to_user ( ioasa , & cmd -> ioa_cb -> ioasa , sizeof ( struct pmcraid_ioasa ) ) ) { pmcraid_err ( \"failed<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>ioasa<S2SV_blank>buffer<S2SV_blank>to<S2SV_blank>user\\\\n\" ) ; rc = - EFAULT ; } else if ( direction == DMA_FROM_DEVICE && request_size > 0 ) { rc = pmcraid_copy_sglist ( cmd -> sglist , request_buffer , request_size , direction ) ; if ( rc ) { pmcraid_err ( \"failed<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>user<S2SV_blank>buffer\\\\n\" ) ; rc = - EFAULT ; } } out_free_sglist : pmcraid_release_passthrough_ioadls ( cmd , request_size , direction ) ; pmcraid_return_cmd ( cmd ) ; out_free_buffer : kfree ( buffer ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_free_buffer ; } } else if ( request_size < 0 ) { rc = - EINVAL ; goto out_free_buffer ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int rfcomm_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct rfcomm_dlc * d = rfcomm_pi ( sk ) -> dlc ; int len ; if ( test_and_clear_bit ( RFCOMM_DEFER_SETUP , & d -> flags ) ) { <S2SV_StartBug> rfcomm_dlc_accept ( d ) ; <S2SV_EndBug> msg -> msg_namelen = 0 ; return 0 ; } len = bt_sock_stream_recvmsg ( iocb , sock , msg , size , flags ) ; lock_sock ( sk ) ; if ( ! ( flags & MSG_PEEK ) && len > 0 ) atomic_sub ( len , & sk -> sk_rmem_alloc ) ; if ( atomic_read ( & sk -> sk_rmem_alloc ) <= ( sk -> sk_rcvbuf >> 2 ) ) rfcomm_dlc_unthrottle ( rfcomm_pi ( sk ) -> dlc ) ; release_sock ( sk ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( d ) <S2SV_ModEnd> ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16718\n\n```\nCWE-78 static char * __filterQuotedShell ( const char * arg ) { r_return_val_if_fail ( arg , NULL ) ; char * a = malloc ( strlen ( arg ) + 1 ) ; if ( ! a ) { return NULL ; } char * b = a ; while ( * arg ) { switch ( * arg ) { case '<S2SV_blank>' : case '=' : <S2SV_StartBug> case '\\\\r' : <S2SV_EndBug> case '\\\\n' : break ; default : * b ++ = * arg ; break ; } arg ++ ; } * b = 0 ; return a ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> '=' : case \\'\"\\' : case '\\\\\\\\' : case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 char * _single_string_alloc_and_copy ( LPCWSTR in ) { char * chr ; int len = 0 ; if ( ! in ) { <S2SV_StartBug> return in ; <S2SV_EndBug> } while ( in [ len ] != 0 ) { len ++ ; } chr = malloc ( len + 1 ) ; len = 0 ; while ( in [ len ] != 0 ) { chr [ len ] = 0xFF & in [ len ] ; len ++ ; } chr [ len ++ ] = '\\\\0' ; return chr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return NULL <S2SV_ModEnd> ; } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0311\n\n```\nCWE-000 static int translate_desc ( struct vhost_dev * dev , u64 addr , u32 len , struct iovec iov [ ] , int iov_size ) { const struct vhost_memory_region * reg ; struct vhost_memory * mem ; struct iovec * _iov ; u64 s = 0 ; int ret = 0 ; rcu_read_lock ( ) ; mem = rcu_dereference ( dev -> memory ) ; while ( ( u64 ) len > s ) { u64 size ; if ( unlikely ( ret >= iov_size ) ) { ret = - ENOBUFS ; break ; } reg = find_region ( mem , addr , len ) ; if ( unlikely ( ! reg ) ) { ret = - EFAULT ; break ; } _iov = iov + ret ; size = reg -> memory_size - addr + reg -> guest_phys_addr ; <S2SV_StartBug> _iov -> iov_len = min ( ( u64 ) len , size ) ; <S2SV_EndBug> _iov -> iov_base = ( void __user * ) ( unsigned long ) ( reg -> userspace_addr + addr - reg -> guest_phys_addr ) ; s += size ; addr += size ; ++ ret ; } rcu_read_unlock ( ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u64 ) len - s\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 <S2SV_StartBug> int perf_event_overflow ( struct perf_event * event , int nmi , <S2SV_EndBug> struct perf_sample_data * data , struct pt_regs * regs ) { <S2SV_StartBug> return __perf_event_overflow ( event , nmi , 1 , data , regs ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event * event <S2SV_ModEnd> , struct perf_sample_data <S2SV_ModStart> ( event , <S2SV_ModEnd> 1 , data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4343\n\n```\nCWE-415 static OM_uint32 init_ctx_reselect ( OM_uint32 * minor_status , spnego_gss_ctx_id_t sc , OM_uint32 acc_negState , gss_OID supportedMech , gss_buffer_t * responseToken , gss_buffer_t * mechListMIC , OM_uint32 * negState , send_token_flag * tokflag ) { OM_uint32 tmpmin ; <S2SV_StartBug> size_t i ; <S2SV_EndBug> generic_gss_release_oid ( & tmpmin , & sc -> internal_mech ) ; gss_delete_sec_context ( & tmpmin , & sc -> ctx_handle , GSS_C_NO_BUFFER ) ; for ( i = 0 ; i < sc -> mech_set -> count ; i ++ ) { if ( g_OID_equal ( supportedMech , & sc -> mech_set -> elements [ i ] ) ) break ; } if ( i == sc -> mech_set -> count ) return GSS_S_DEFECTIVE_TOKEN ; sc -> internal_mech = & sc -> mech_set -> elements [ i ] ; if ( acc_negState != REQUEST_MIC ) return GSS_S_DEFECTIVE_TOKEN ; sc -> mech_complete = 0 ; sc -> mic_reqd = 1 ; * negState = REQUEST_MIC ; * tokflag = CONT_TOKEN_SEND ; return GSS_S_CONTINUE_NEEDED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t i <S2SV_ModEnd> ; gss_delete_sec_context (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8646\n\n```\nCWE-476 static int hash_accept ( struct socket * sock , struct socket * newsock , int flags ) { struct sock * sk = sock -> sk ; struct alg_sock * ask = alg_sk ( sk ) ; struct hash_ctx * ctx = ask -> private ; struct ahash_request * req = & ctx -> req ; char state [ crypto_ahash_statesize ( crypto_ahash_reqtfm ( req ) ) ] ; struct sock * sk2 ; struct alg_sock * ask2 ; struct hash_ctx * ctx2 ; <S2SV_StartBug> int err ; <S2SV_EndBug> <S2SV_StartBug> err = crypto_ahash_export ( req , state ) ; <S2SV_EndBug> if ( err ) return err ; err = af_alg_accept ( ask -> parent , newsock ) ; if ( err ) return err ; sk2 = newsock -> sk ; ask2 = alg_sk ( sk2 ) ; ctx2 = ask2 -> private ; <S2SV_StartBug> ctx2 -> more = 1 ; <S2SV_EndBug> err = crypto_ahash_import ( & ctx2 -> req , state ) ; if ( err ) { sock_orphan ( sk2 ) ; sock_put ( sk2 ) ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx2 ; bool more ; <S2SV_ModStart> int err ; lock_sock ( sk ) ; more = ctx -> more ; err = more ? <S2SV_ModEnd> crypto_ahash_export ( req <S2SV_ModStart> , state ) : 0 ; release_sock ( sk ) <S2SV_ModStart> -> more = more ; if ( ! more ) return err <S2SV_ModEnd> ; err =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_split_unwritten_extents ( handle_t * handle , struct inode * inode , struct ext4_map_blocks * map , struct ext4_ext_path * path , int flags ) { ext4_lblk_t eof_block ; ext4_lblk_t ee_block ; struct ext4_extent * ex ; unsigned int ee_len ; int split_flag = 0 , depth ; ext_debug ( \"ext4_split_unwritten_extents:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical\" \"block<S2SV_blank>%llu,<S2SV_blank>max_blocks<S2SV_blank>%u\\\\n\" , inode -> i_ino , ( unsigned long long ) map -> m_lblk , map -> m_len ) ; eof_block = ( inode -> i_size + inode -> i_sb -> s_blocksize - 1 ) >> inode -> i_sb -> s_blocksize_bits ; if ( eof_block < map -> m_lblk + map -> m_len ) eof_block = map -> m_lblk + map -> m_len ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; split_flag |= ee_block + ee_len <= eof_block ? EXT4_EXT_MAY_ZEROOUT : 0 ; split_flag |= EXT4_EXT_MARK_UNINIT2 ; <S2SV_StartBug> flags |= EXT4_GET_BLOCKS_PRE_IO ; <S2SV_EndBug> return ext4_split_extent ( handle , inode , path , map , split_flag , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= EXT4_EXT_MARK_UNINIT2 ; if ( flags & EXT4_GET_BLOCKS_CONVERT ) split_flag |= EXT4_EXT_DATA_VALID2 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_populate_message_header ( NTLM_MESSAGE_HEADER * header , UINT32 MessageType ) <S2SV_EndBug> { CopyMemory ( header -> Signature , NTLM_SIGNATURE , sizeof ( NTLM_SIGNATURE ) ) ; header -> MessageType = MessageType ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4118\n\n```\nCWE-476 BOOL security_decrypt ( BYTE * data , int length , rdpRdp * rdp ) <S2SV_StartBug> { <S2SV_EndBug> if ( rdp -> decrypt_use_count >= 4096 ) { security_key_update ( rdp -> decrypt_key , rdp -> decrypt_update_key , rdp -> rc4_key_len ) ; crypto_rc4_free ( rdp -> rc4_decrypt_key ) ; rdp -> rc4_decrypt_key = crypto_rc4_init ( rdp -> decrypt_key , rdp -> rc4_key_len ) ; rdp -> decrypt_use_count = 0 ; } crypto_rc4 ( rdp -> rc4_decrypt_key , length , data , data ) ; rdp -> decrypt_use_count += 1 ; rdp -> decrypt_checksum_use_count ++ ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rdp ) { if ( rdp -> rc4_decrypt_key == NULL ) return FALSE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-1187(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15900\n\n```\nCWE-1187 static int parsegid ( const char * s , gid_t * gid ) { struct group * gr ; <S2SV_StartBug> const char * errstr ; <S2SV_EndBug> if ( ( gr = getgrnam ( s ) ) != NULL ) { * gid = gr -> gr_gid ; return 0 ; } # if ! defined ( __linux__ ) && ! defined ( __NetBSD__ ) * gid = strtonum ( s , 0 , GID_MAX , & errstr ) ; <S2SV_StartBug> # else <S2SV_EndBug> sscanf ( s , \"%d\" , gid ) ; <S2SV_StartBug> # endif <S2SV_EndBug> if ( errstr ) return - 1 ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * gr ; # if ! defined ( __linux__ ) && ! defined ( __NetBSD__ ) <S2SV_ModStart> char * errstr = NULL ; # else int status ; # endif <S2SV_ModEnd> if ( ( <S2SV_ModStart> errstr ) ; if ( errstr ) return - 1 ; # else status = <S2SV_ModEnd> sscanf ( s <S2SV_ModStart> gid ) ; if ( status != 1 <S2SV_ModEnd> ) return - <S2SV_ModStart> - 1 ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-354(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18672\n\n```\nCWE-354 void recovery_cipher_finalize ( void ) <S2SV_StartBug> { <S2SV_EndBug> static char CONFIDENTIAL new_mnemonic [ MNEMONIC_BUF ] = \"\" ; static char CONFIDENTIAL temp_word [ CURRENT_WORD_BUF ] ; volatile bool auto_completed = true ; char * tok = strtok ( mnemonic , \"<S2SV_blank>\" ) ; while ( tok ) { strlcpy ( temp_word , tok , CURRENT_WORD_BUF ) ; auto_completed &= attempt_auto_complete ( temp_word ) ; strlcat ( new_mnemonic , temp_word , MNEMONIC_BUF ) ; strlcat ( new_mnemonic , \"<S2SV_blank>\" , MNEMONIC_BUF ) ; tok = strtok ( NULL , \"<S2SV_blank>\" ) ; } memzero ( temp_word , sizeof ( temp_word ) ) ; if ( ! auto_completed && ! enforce_wordlist ) { if ( ! dry_run ) { storage_reset ( ) ; } fsm_sendFailure ( FailureType_Failure_SyntaxError , \"Words<S2SV_blank>were<S2SV_blank>not<S2SV_blank>entered<S2SV_blank>correctly.<S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>you<S2SV_blank>are<S2SV_blank>using<S2SV_blank>the<S2SV_blank>substition<S2SV_blank>cipher.\" ) ; awaiting_character = false ; layoutHome ( ) ; return ; } <S2SV_StartBug> new_mnemonic [ strlen ( new_mnemonic ) - 1 ] = '\\\\0' ; <S2SV_EndBug> if ( ! dry_run && ( ! enforce_wordlist || mnemonic_check ( new_mnemonic ) ) ) { storage_setMnemonic ( new_mnemonic ) ; memzero ( new_mnemonic , sizeof ( new_mnemonic ) ) ; if ( ! enforce_wordlist ) { storage_setImported ( true ) ; } storage_commit ( ) ; fsm_sendSuccess ( \"Device<S2SV_blank>recovered\" ) ; } else if ( dry_run ) { bool match = storage_isInitialized ( ) && storage_containsMnemonic ( new_mnemonic ) ; if ( match ) { review ( ButtonRequestType_ButtonRequest_Other , \"Recovery<S2SV_blank>Dry<S2SV_blank>Run\" , \"The<S2SV_blank>seed<S2SV_blank>is<S2SV_blank>valid<S2SV_blank>and<S2SV_blank>MATCHES<S2SV_blank>the<S2SV_blank>one<S2SV_blank>in<S2SV_blank>the<S2SV_blank>device.\" ) ; fsm_sendSuccess ( \"The<S2SV_blank>seed<S2SV_blank>is<S2SV_blank>valid<S2SV_blank>and<S2SV_blank>matches<S2SV_blank>the<S2SV_blank>one<S2SV_blank>in<S2SV_blank>the<S2SV_blank>device.\" ) ; } else if ( mnemonic_check ( new_mnemonic ) ) { review ( ButtonRequestType_ButtonRequest_Other , \"Recovery<S2SV_blank>Dry<S2SV_blank>Run\" , \"The<S2SV_blank>seed<S2SV_blank>is<S2SV_blank>valid,<S2SV_blank>but<S2SV_blank>DOES<S2SV_blank>NOT<S2SV_blank>MATCH<S2SV_blank>the<S2SV_blank>one<S2SV_blank>in<S2SV_blank>the<S2SV_blank>device.\" ) ; fsm_sendFailure ( FailureType_Failure_Other , \"The<S2SV_blank>seed<S2SV_blank>is<S2SV_blank>valid,<S2SV_blank>but<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>the<S2SV_blank>one<S2SV_blank>in<S2SV_blank>the<S2SV_blank>device.\" ) ; } else { review ( ButtonRequestType_ButtonRequest_Other , \"Recovery<S2SV_blank>Dry<S2SV_blank>Run\" , \"The<S2SV_blank>seed<S2SV_blank>is<S2SV_blank>INVALID,<S2SV_blank>and<S2SV_blank>DOES<S2SV_blank>NOT<S2SV_blank>MATCH<S2SV_blank>the<S2SV_blank>one<S2SV_blank>in<S2SV_blank>the<S2SV_blank>device.\" ) ; fsm_sendFailure ( FailureType_Failure_Other , \"The<S2SV_blank>seed<S2SV_blank>is<S2SV_blank>invalid,<S2SV_blank>and<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>the<S2SV_blank>one<S2SV_blank>in<S2SV_blank>the<S2SV_blank>device.\" ) ; } memzero ( new_mnemonic , sizeof ( new_mnemonic ) ) ; } else { session_clear ( true ) ; fsm_sendFailure ( FailureType_Failure_SyntaxError , \"Invalid<S2SV_blank>mnemonic,<S2SV_blank>are<S2SV_blank>words<S2SV_blank>in<S2SV_blank>correct<S2SV_blank>order?\" ) ; recovery_abort ( ) ; } memzero ( new_mnemonic , sizeof ( new_mnemonic ) ) ; awaiting_character = false ; memzero ( mnemonic , sizeof ( mnemonic ) ) ; memzero ( cipher , sizeof ( cipher ) ) ; layoutHome ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { if ( ! recovery_started ) { recovery_abort ( ) ; fsm_sendFailure ( FailureType_Failure_UnexpectedMessage , \"Not<S2SV_blank>in<S2SV_blank>Recovery<S2SV_blank>mode\" ) ; layoutHome ( ) ; return ; } <S2SV_ModStart> } new_mnemonic [ MAX ( 0u , strnlen ( new_mnemonic , sizeof ( new_mnemonic ) <S2SV_ModEnd> ) - 1 <S2SV_ModStart> ) - 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6255\n\n```\nCWE-284 static int http_RecvPostMessage ( http_parser_t * parser , SOCKINFO * info , char * filename , struct SendInstruction * Instr ) { size_t Data_Buf_Size = 1024 ; char Buf [ 1024 ] ; int Timeout = - 1 ; FILE * Fp ; parse_status_t status = PARSE_OK ; int ok_on_close = FALSE ; size_t entity_offset = 0 ; int num_read = 0 ; int ret_code = HTTP_OK ; if ( Instr && Instr -> IsVirtualFile ) { Fp = ( virtualDirCallback . open ) ( filename , UPNP_WRITE ) ; if ( Fp == NULL ) return HTTP_INTERNAL_SERVER_ERROR ; } else { <S2SV_StartBug> Fp = fopen ( filename , \"wb\" ) ; <S2SV_EndBug> if ( Fp == NULL ) <S2SV_StartBug> return HTTP_UNAUTHORIZED ; <S2SV_EndBug> } parser -> position = POS_ENTITY ; do { if ( parser -> position != POS_COMPLETE ) status = parser_parse_entity ( parser ) ; if ( status == PARSE_INCOMPLETE_ENTITY ) { ok_on_close = TRUE ; } else if ( ( status != PARSE_SUCCESS ) && ( status != PARSE_CONTINUE_1 ) && ( status != PARSE_INCOMPLETE ) ) { ret_code = HTTP_BAD_REQUEST ; goto ExitFunction ; } while ( entity_offset + Data_Buf_Size > parser -> msg . entity . length && parser -> position != POS_COMPLETE ) { num_read = sock_read ( info , Buf , sizeof ( Buf ) , & Timeout ) ; if ( num_read > 0 ) { if ( membuffer_append ( & parser -> msg . msg , Buf , ( size_t ) num_read ) != 0 ) { parser -> http_error_code = HTTP_INTERNAL_SERVER_ERROR ; ret_code = HTTP_INTERNAL_SERVER_ERROR ; goto ExitFunction ; } status = parser_parse_entity ( parser ) ; if ( status == PARSE_INCOMPLETE_ENTITY ) { ok_on_close = TRUE ; } else if ( ( status != PARSE_SUCCESS ) && ( status != PARSE_CONTINUE_1 ) && ( status != PARSE_INCOMPLETE ) ) { ret_code = HTTP_BAD_REQUEST ; goto ExitFunction ; } } else if ( num_read == 0 ) { if ( ok_on_close ) { UpnpPrintf ( UPNP_INFO , HTTP , __FILE__ , __LINE__ , \"<<<<S2SV_blank>(RECVD)<S2SV_blank><<<\\\\n%s\\\\n-----------------\\\\n\" , parser -> msg . msg . buf ) ; print_http_headers ( & parser -> msg ) ; parser -> position = POS_COMPLETE ; } else { parser -> http_error_code = HTTP_BAD_REQUEST ; ret_code = HTTP_BAD_REQUEST ; goto ExitFunction ; } } else { ret_code = HTTP_SERVICE_UNAVAILABLE ; goto ExitFunction ; } } if ( ( entity_offset + Data_Buf_Size ) > parser -> msg . entity . length ) { Data_Buf_Size = parser -> msg . entity . length - entity_offset ; } memcpy ( Buf , & parser -> msg . msg . buf [ parser -> entity_start_position + entity_offset ] , Data_Buf_Size ) ; entity_offset += Data_Buf_Size ; if ( Instr && Instr -> IsVirtualFile ) { int n = virtualDirCallback . write ( Fp , Buf , Data_Buf_Size ) ; if ( n < 0 ) { ret_code = HTTP_INTERNAL_SERVER_ERROR ; goto ExitFunction ; } } else { size_t n = fwrite ( Buf , 1 , Data_Buf_Size , Fp ) ; if ( n != Data_Buf_Size ) { ret_code = HTTP_INTERNAL_SERVER_ERROR ; goto ExitFunction ; } } } while ( parser -> position != POS_COMPLETE || entity_offset != parser -> msg . entity . length ) ; ExitFunction : if ( Instr && Instr -> IsVirtualFile ) { virtualDirCallback . close ( Fp ) ; } else { fclose ( Fp ) ; } return ret_code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { # ifdef UPNP_ENABLE_POST_WRITE <S2SV_ModStart> return HTTP_UNAUTHORIZED ; # else return HTTP_NOT_FOUND ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5225\n\n```\nCWE-119 DECLAREcpFunc ( cpSeparate2ContigByRow ) { tsize_t scanlinesizein = TIFFScanlineSize ( in ) ; tsize_t scanlinesizeout = TIFFScanlineSize ( out ) ; tdata_t inbuf ; tdata_t outbuf ; register uint8 * inp , * outp ; register uint32 n ; uint32 row ; tsample_t s ; <S2SV_StartBug> inbuf = _TIFFmalloc ( scanlinesizein ) ; <S2SV_EndBug> outbuf = _TIFFmalloc ( scanlinesizeout ) ; if ( ! inbuf || ! outbuf ) goto bad ; _TIFFmemset ( inbuf , 0 , scanlinesizein ) ; _TIFFmemset ( outbuf , 0 , scanlinesizeout ) ; for ( row = 0 ; row < imagelength ; row ++ ) { for ( s = 0 ; s < spp ; s ++ ) { if ( TIFFReadScanline ( in , inbuf , row , s ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>scanline<S2SV_blank>%lu\" , ( unsigned long ) row ) ; goto bad ; } inp = ( uint8 * ) inbuf ; outp = ( ( uint8 * ) outbuf ) + s ; for ( n = imagewidth ; n -- > 0 ; ) { * outp = * inp ++ ; outp += spp ; } } if ( TIFFWriteScanline ( out , outbuf , row , 0 ) < 0 ) { TIFFError ( TIFFFileName ( out ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>write<S2SV_blank>scanline<S2SV_blank>%lu\" , ( unsigned long ) row ) ; goto bad ; } } if ( inbuf ) _TIFFfree ( inbuf ) ; if ( outbuf ) _TIFFfree ( outbuf ) ; return 1 ; bad : if ( inbuf ) _TIFFfree ( inbuf ) ; if ( outbuf ) _TIFFfree ( outbuf ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tsample_t s ; uint16 bps = 0 ; ( void ) TIFFGetField ( in , TIFFTAG_BITSPERSAMPLE , & bps ) ; if ( bps != 8 ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can<S2SV_blank>only<S2SV_blank>handle<S2SV_blank>BitsPerSample=8<S2SV_blank>in<S2SV_blank>%s\" , \"cpSeparate2ContigByRow\" ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18811\n\n```\nCWE-401 static int sof_set_get_large_ctrl_data ( struct snd_sof_dev * sdev , struct sof_ipc_ctrl_data * cdata , struct sof_ipc_ctrl_data_params * sparams , bool send ) { struct sof_ipc_ctrl_data * partdata ; size_t send_bytes ; size_t offset = 0 ; size_t msg_bytes ; size_t pl_size ; int err ; int i ; partdata = kzalloc ( SOF_IPC_MSG_MAX_SIZE , GFP_KERNEL ) ; if ( ! partdata ) return - ENOMEM ; if ( send ) err = sof_get_ctrl_copy_params ( cdata -> type , cdata , partdata , sparams ) ; else err = sof_get_ctrl_copy_params ( cdata -> type , partdata , cdata , sparams ) ; <S2SV_StartBug> if ( err < 0 ) <S2SV_EndBug> <S2SV_StartBug> return err ; <S2SV_EndBug> msg_bytes = sparams -> msg_bytes ; pl_size = sparams -> pl_size ; memcpy ( partdata , cdata , sparams -> hdr_bytes ) ; mutex_lock ( & sdev -> ipc -> tx_mutex ) ; for ( i = 0 ; i < sparams -> num_msg ; i ++ ) { send_bytes = min ( msg_bytes , pl_size ) ; partdata -> num_elems = send_bytes ; partdata -> rhdr . hdr . size = sparams -> hdr_bytes + send_bytes ; partdata -> msg_index = i ; msg_bytes -= send_bytes ; partdata -> elems_remaining = msg_bytes ; if ( send ) memcpy ( sparams -> dst , sparams -> src + offset , send_bytes ) ; err = sof_ipc_tx_message_unlocked ( sdev -> ipc , partdata -> rhdr . hdr . cmd , partdata , partdata -> rhdr . hdr . size , partdata , partdata -> rhdr . hdr . size ) ; if ( err < 0 ) break ; if ( ! send ) memcpy ( sparams -> dst + offset , sparams -> src , send_bytes ) ; offset += pl_size ; } mutex_unlock ( & sdev -> ipc -> tx_mutex ) ; kfree ( partdata ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) { kfree ( partdata ) ; <S2SV_ModStart> return err ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3688\n\n```\nCWE-399 static inline int sctp_chunk_length_valid ( struct sctp_chunk * chunk , __u16 required_length ) { __u16 chunk_length = ntohs ( chunk -> chunk_hdr -> length ) ; <S2SV_StartBug> if ( unlikely ( chunk_length < required_length ) ) <S2SV_EndBug> return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( unlikely ( chunk -> pdiscard ) ) return 0 ; if ( unlikely (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int dgram_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { size_t copied = 0 ; int err = - EOPNOTSUPP ; struct sk_buff * skb ; struct sockaddr_ieee802154 * saddr ; saddr = ( struct sockaddr_ieee802154 * ) msg -> msg_name ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( saddr ) { saddr -> family = AF_IEEE802154 ; saddr -> addr = mac_cb ( skb ) -> sa ; <S2SV_StartBug> } <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( * saddr ) ; if ( flags & MSG_TRUNC ) copied = skb -> len ; done : skb_free_datagram ( sk , skb ) ; out : if ( err ) return err ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sa ; * addr_len = sizeof ( * saddr ) ; } <S2SV_ModEnd> if ( flags\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 static void process_tree ( struct rev_info * revs , struct tree * tree , show_object_fn show , struct strbuf * base , const char * name , void * cb_data ) { struct object * obj = & tree -> object ; struct tree_desc desc ; struct name_entry entry ; enum interesting match = revs -> diffopt . pathspec . nr == 0 ? all_entries_interesting : entry_not_interesting ; int baselen = base -> len ; if ( ! revs -> tree_objects ) return ; if ( ! obj ) die ( \"bad<S2SV_blank>tree<S2SV_blank>object\" ) ; if ( obj -> flags & ( UNINTERESTING | SEEN ) ) return ; if ( parse_tree_gently ( tree , revs -> ignore_missing_links ) < 0 ) { if ( revs -> ignore_missing_links ) return ; die ( \"bad<S2SV_blank>tree<S2SV_blank>object<S2SV_blank>%s\" , oid_to_hex ( & obj -> oid ) ) ; } obj -> flags |= SEEN ; <S2SV_StartBug> show ( obj , base , name , cb_data ) ; <S2SV_EndBug> strbuf_addstr ( base , name ) ; if ( base -> len ) strbuf_addch ( base , '/' ) ; init_tree_desc ( & desc , tree -> buffer , tree -> size ) ; while ( tree_entry ( & desc , & entry ) ) { if ( match != all_entries_interesting ) { match = tree_entry_interesting ( & entry , base , 0 , & revs -> diffopt . pathspec ) ; if ( match == all_entries_not_interesting ) break ; if ( match == entry_not_interesting ) continue ; } if ( S_ISDIR ( entry . mode ) ) process_tree ( revs , lookup_tree ( entry . sha1 ) , show , base , entry . path , cb_data ) ; else if ( S_ISGITLINK ( entry . mode ) ) process_gitlink ( revs , entry . sha1 , show , base , entry . path , cb_data ) ; else process_blob ( revs , lookup_blob ( entry . sha1 ) , show , base , entry . path , cb_data ) ; } strbuf_setlen ( base , baselen ) ; free_tree_buffer ( tree ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= SEEN ; strbuf_addstr ( base , name ) ; <S2SV_ModStart> obj , base -> buf , cb_data <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5829\n\n```\nCWE-119 static noinline int hiddev_ioctl_usage ( struct hiddev * hiddev , unsigned int cmd , void __user * user_arg ) { struct hid_device * hid = hiddev -> hid ; struct hiddev_report_info rinfo ; struct hiddev_usage_ref_multi * uref_multi = NULL ; struct hiddev_usage_ref * uref ; struct hid_report * report ; struct hid_field * field ; int i ; uref_multi = kmalloc ( sizeof ( struct hiddev_usage_ref_multi ) , GFP_KERNEL ) ; if ( ! uref_multi ) return - ENOMEM ; uref = & uref_multi -> uref ; if ( cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES ) { if ( copy_from_user ( uref_multi , user_arg , sizeof ( * uref_multi ) ) ) goto fault ; } else { if ( copy_from_user ( uref , user_arg , sizeof ( * uref ) ) ) goto fault ; } switch ( cmd ) { case HIDIOCGUCODE : rinfo . report_type = uref -> report_type ; rinfo . report_id = uref -> report_id ; if ( ( report = hiddev_lookup_report ( hid , & rinfo ) ) == NULL ) goto inval ; if ( uref -> field_index >= report -> maxfield ) goto inval ; field = report -> field [ uref -> field_index ] ; if ( uref -> usage_index >= field -> maxusage ) goto inval ; uref -> usage_code = field -> usage [ uref -> usage_index ] . hid ; if ( copy_to_user ( user_arg , uref , sizeof ( * uref ) ) ) goto fault ; goto goodreturn ; default : if ( cmd != HIDIOCGUSAGE && cmd != HIDIOCGUSAGES && uref -> report_type == HID_REPORT_TYPE_INPUT ) goto inval ; if ( uref -> report_id == HID_REPORT_ID_UNKNOWN ) { field = hiddev_lookup_usage ( hid , uref ) ; if ( field == NULL ) goto inval ; } else { rinfo . report_type = uref -> report_type ; rinfo . report_id = uref -> report_id ; if ( ( report = hiddev_lookup_report ( hid , & rinfo ) ) == NULL ) goto inval ; if ( uref -> field_index >= report -> maxfield ) goto inval ; field = report -> field [ uref -> field_index ] ; if ( cmd == HIDIOCGCOLLECTIONINDEX ) { if ( uref -> usage_index >= field -> maxusage ) goto inval ; } else if ( uref -> usage_index >= field -> report_count ) goto inval ; <S2SV_StartBug> else if ( ( cmd == HIDIOCGUSAGES || cmd == HIDIOCSUSAGES ) && <S2SV_EndBug> ( uref_multi -> num_values > HID_MAX_MULTI_USAGES || uref -> usage_index + uref_multi -> num_values > field -> report_count ) ) goto inval ; <S2SV_StartBug> } <S2SV_EndBug> switch ( cmd ) { case HIDIOCGUSAGE : uref -> value = field -> value [ uref -> usage_index ] ; if ( copy_to_user ( user_arg , uref , sizeof ( * uref ) ) ) goto fault ; goto goodreturn ; case HIDIOCSUSAGE : field -> value [ uref -> usage_index ] = uref -> value ; goto goodreturn ; case HIDIOCGCOLLECTIONINDEX : i = field -> usage [ uref -> usage_index ] . collection_index ; kfree ( uref_multi ) ; return i ; case HIDIOCGUSAGES : for ( i = 0 ; i < uref_multi -> num_values ; i ++ ) uref_multi -> values [ i ] = field -> value [ uref -> usage_index + i ] ; if ( copy_to_user ( user_arg , uref_multi , sizeof ( * uref_multi ) ) ) goto fault ; goto goodreturn ; case HIDIOCSUSAGES : for ( i = 0 ; i < uref_multi -> num_values ; i ++ ) field -> value [ uref -> usage_index + i ] = uref_multi -> values [ i ] ; goto goodreturn ; } goodreturn : kfree ( uref_multi ) ; return 0 ; fault : kfree ( uref_multi ) ; return - EFAULT ; inval : kfree ( uref_multi ) ; return - EINVAL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto inval ; } <S2SV_ModEnd> if ( ( <S2SV_ModStart> goto inval ; <S2SV_ModEnd> switch ( cmd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14397\n\n```\nCWE-476 void rfbReleaseClientIterator ( rfbClientIteratorPtr iterator ) { <S2SV_StartBug> if ( iterator -> next ) rfbDecrClientRef ( iterator -> next ) ; <S2SV_EndBug> free ( iterator ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( iterator &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7872\n\n```\nCWE-20 static noinline void key_gc_unused_keys ( struct list_head * keys ) { while ( ! list_empty ( keys ) ) { struct key * key = list_entry ( keys -> next , struct key , graveyard_link ) ; list_del ( & key -> graveyard_link ) ; kdebug ( \"-<S2SV_blank>%u\" , key -> serial ) ; key_check ( key ) ; <S2SV_StartBug> if ( key -> type -> destroy ) <S2SV_EndBug> key -> type -> destroy ( key ) ; security_key_free ( key ) ; if ( test_bit ( KEY_FLAG_IN_QUOTA , & key -> flags ) ) { spin_lock ( & key -> user -> lock ) ; key -> user -> qnkeys -- ; key -> user -> qnbytes -= key -> quotalen ; spin_unlock ( & key -> user -> lock ) ; } atomic_dec ( & key -> user -> nkeys ) ; if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) atomic_dec ( & key -> user -> nikeys ) ; key_user_put ( key -> user ) ; kfree ( key -> description ) ; # ifdef KEY_DEBUGGING key -> magic = KEY_DEBUG_MAGIC_X ; # endif kmem_cache_free ( key_jar , key ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) && ! test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0393\n\n```\nCWE-000 static void setup_token_decoder ( VP8D_COMP * pbi , const unsigned char * token_part_sizes ) { vp8_reader * bool_decoder = & pbi -> mbc [ 0 ] ; unsigned int partition_idx ; unsigned int fragment_idx ; unsigned int num_token_partitions ; const unsigned char * first_fragment_end = pbi -> fragments . ptrs [ 0 ] + pbi -> fragments . sizes [ 0 ] ; TOKEN_PARTITION multi_token_partition = ( TOKEN_PARTITION ) vp8_read_literal ( & pbi -> mbc [ 8 ] , 2 ) ; if ( ! vp8dx_bool_error ( & pbi -> mbc [ 8 ] ) ) pbi -> common . multi_token_partition = multi_token_partition ; num_token_partitions = 1 << pbi -> common . multi_token_partition ; for ( fragment_idx = 0 ; fragment_idx < pbi -> fragments . count ; ++ fragment_idx ) { unsigned int fragment_size = pbi -> fragments . sizes [ fragment_idx ] ; const unsigned char * fragment_end = pbi -> fragments . ptrs [ fragment_idx ] + fragment_size ; if ( fragment_idx == 0 ) { ptrdiff_t ext_first_part_size = token_part_sizes - pbi -> fragments . ptrs [ 0 ] + 3 * ( num_token_partitions - 1 ) ; fragment_size -= ( unsigned int ) ext_first_part_size ; if ( fragment_size > 0 ) { pbi -> fragments . sizes [ 0 ] = ( unsigned int ) ext_first_part_size ; fragment_idx ++ ; pbi -> fragments . ptrs [ fragment_idx ] = pbi -> fragments . ptrs [ 0 ] + pbi -> fragments . sizes [ 0 ] ; } } while ( fragment_size > 0 ) { ptrdiff_t partition_size = read_available_partition_size ( pbi , token_part_sizes , pbi -> fragments . ptrs [ fragment_idx ] , first_fragment_end , fragment_end , fragment_idx - 1 , num_token_partitions ) ; pbi -> fragments . sizes [ fragment_idx ] = ( unsigned int ) partition_size ; fragment_size -= ( unsigned int ) partition_size ; assert ( fragment_idx <= num_token_partitions ) ; if ( fragment_size > 0 ) { fragment_idx ++ ; pbi -> fragments . ptrs [ fragment_idx ] = pbi -> fragments . ptrs [ fragment_idx - 1 ] + partition_size ; } } } pbi -> fragments . count = num_token_partitions + 1 ; for ( partition_idx = 1 ; partition_idx < pbi -> fragments . count ; ++ partition_idx ) { if ( vp8dx_start_decode ( bool_decoder , pbi -> fragments . ptrs [ partition_idx ] , pbi -> fragments . sizes [ partition_idx ] , pbi -> decrypt_cb , pbi -> decrypt_state ) ) vpx_internal_error ( & pbi -> common . error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>bool<S2SV_blank>decoder<S2SV_blank>%d\" , partition_idx ) ; bool_decoder ++ ; } # if CONFIG_MULTITHREAD <S2SV_StartBug> if ( pbi -> decoding_thread_count > num_token_partitions - 1 ) <S2SV_EndBug> <S2SV_StartBug> pbi -> decoding_thread_count = num_token_partitions - 1 ; <S2SV_EndBug> # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - 1 ) { <S2SV_ModStart> - 1 ; } if ( pbi -> decoding_thread_count > pbi -> common . mb_rows - 1 ) { pbi -> decoding_thread_count = pbi -> common . mb_rows - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9949\n\n```\nCWE-787 static grub_disk_addr_t grub_ext2_read_block ( grub_fshelp_node_t node , grub_disk_addr_t fileblock ) { struct grub_ext2_data * data = node -> data ; struct grub_ext2_inode * inode = & node -> inode ; int blknr = - 1 ; unsigned int blksz = EXT2_BLOCK_SIZE ( data ) ; int log2_blksz = LOG2_EXT2_BLOCK_SIZE ( data ) ; if ( grub_le_to_cpu32 ( inode -> flags ) & EXT4_EXTENTS_FLAG ) { # ifndef _MSC_VER char buf [ EXT2_BLOCK_SIZE ( data ) ] ; # else char * buf = grub_malloc ( EXT2_BLOCK_SIZE ( data ) ) ; # endif struct grub_ext4_extent_header * leaf ; struct grub_ext4_extent * ext ; int i ; leaf = grub_ext4_find_leaf ( data , buf , ( struct grub_ext4_extent_header * ) inode -> blocks . dir_blocks , fileblock ) ; if ( ! leaf ) { grub_error ( GRUB_ERR_BAD_FS , \"invalid<S2SV_blank>extent\" ) ; return - 1 ; } ext = ( struct grub_ext4_extent * ) ( leaf + 1 ) ; for ( i = 0 ; i < grub_le_to_cpu16 ( leaf -> entries ) ; i ++ ) { if ( fileblock < grub_le_to_cpu32 ( ext [ i ] . block ) ) break ; } if ( -- i >= 0 ) { fileblock -= grub_le_to_cpu32 ( ext [ i ] . block ) ; if ( fileblock >= grub_le_to_cpu16 ( ext [ i ] . len ) ) return 0 ; else { grub_disk_addr_t start ; start = grub_le_to_cpu16 ( ext [ i ] . start_hi ) ; start = ( start << 32 ) + grub_le_to_cpu32 ( ext [ i ] . start ) ; return fileblock + start ; } } else { grub_error ( GRUB_ERR_BAD_FS , \"something<S2SV_blank>wrong<S2SV_blank>with<S2SV_blank>extent\" ) ; return - 1 ; } } <S2SV_StartBug> if ( fileblock < INDIRECT_BLOCKS ) <S2SV_EndBug> blknr = grub_le_to_cpu32 ( inode -> blocks . dir_blocks [ fileblock ] ) ; <S2SV_StartBug> else if ( fileblock < INDIRECT_BLOCKS + blksz / 4 ) <S2SV_EndBug> { grub_uint32_t * indir ; indir = grub_malloc ( blksz ) ; if ( ! indir ) return grub_errno ; if ( grub_disk_read ( data -> disk , ( ( grub_disk_addr_t ) grub_le_to_cpu32 ( inode -> blocks . indir_block ) ) << log2_blksz , 0 , blksz , indir ) ) return grub_errno ; blknr = grub_le_to_cpu32 ( indir [ fileblock - INDIRECT_BLOCKS ] ) ; grub_free ( indir ) ; } else if ( fileblock < ( grub_disk_addr_t ) ( INDIRECT_BLOCKS + blksz / 4 ) * ( grub_disk_addr_t ) ( blksz / 4 + 1 ) ) { unsigned int perblock = blksz / 4 ; unsigned int rblock = fileblock - ( INDIRECT_BLOCKS + blksz / 4 ) ; grub_uint32_t * indir ; indir = grub_malloc ( blksz ) ; if ( ! indir ) return grub_errno ; if ( grub_disk_read ( data -> disk , ( ( grub_disk_addr_t ) grub_le_to_cpu32 ( inode -> blocks . double_indir_block ) ) << log2_blksz , 0 , blksz , indir ) ) return grub_errno ; if ( grub_disk_read ( data -> disk , ( ( grub_disk_addr_t ) grub_le_to_cpu32 ( indir [ rblock / perblock ] ) ) << log2_blksz , 0 , blksz , indir ) ) return grub_errno ; blknr = grub_le_to_cpu32 ( indir [ rblock % perblock ] ) ; grub_free ( indir ) ; } else { grub_error ( GRUB_ERR_NOT_IMPLEMENTED_YET , \"ext2fs<S2SV_blank>doesn\\'t<S2SV_blank>support<S2SV_blank>triple<S2SV_blank>indirect<S2SV_blank>blocks\" ) ; } return blknr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < INDIRECT_BLOCKS ) { <S2SV_ModStart> ] ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-29367\n\n```\nCWE-787 static int blosc_c ( struct thread_context * thread_context , int32_t bsize , <S2SV_StartBug> int32_t leftoverblock , int32_t ntbytes , int32_t maxbytes , <S2SV_EndBug> const uint8_t * src , const int32_t offset , uint8_t * dest , uint8_t * tmp , uint8_t * tmp2 ) { blosc2_context * context = thread_context -> parent_context ; int dont_split = ( context -> header_flags & 0x10 ) >> 4 ; int dict_training = context -> use_dict && context -> dict_cdict == NULL ; int32_t j , neblock , nstreams ; int32_t cbytes ; int32_t ctbytes = 0 ; int64_t maxout ; int32_t typesize = context -> typesize ; const char * compname ; int accel ; const uint8_t * _src ; uint8_t * _tmp = tmp , * _tmp2 = tmp2 ; uint8_t * _tmp3 = thread_context -> tmp4 ; int last_filter_index = last_filter ( context -> filters , 'c' ) ; bool memcpyed = context -> header_flags & ( uint8_t ) BLOSC_MEMCPYED ; if ( last_filter_index >= 0 || context -> prefilter != NULL ) { if ( memcpyed && context -> prefilter != NULL ) { _src = pipeline_c ( thread_context , bsize , src , offset , dest , _tmp2 , _tmp3 ) ; if ( _src == NULL ) { return - 9 ; } return bsize ; } _src = pipeline_c ( thread_context , bsize , src , offset , _tmp , _tmp2 , _tmp3 ) ; if ( _src == NULL ) { return - 9 ; } } else { _src = src + offset ; } assert ( context -> clevel > 0 ) ; accel = get_accel ( context ) ; if ( ! dont_split && ! leftoverblock && ! dict_training ) { nstreams = ( int32_t ) typesize ; } else { nstreams = 1 ; } neblock = bsize / nstreams ; for ( j = 0 ; j < nstreams ; j ++ ) { if ( ! dict_training ) { dest += sizeof ( int32_t ) ; ntbytes += sizeof ( int32_t ) ; ctbytes += sizeof ( int32_t ) ; } const uint8_t * ip = ( uint8_t * ) _src + j * neblock ; const uint8_t * ipbound = ( uint8_t * ) _src + ( j + 1 ) * neblock ; if ( get_run ( ip , ipbound ) ) { int32_t value = _src [ j * neblock ] ; <S2SV_StartBug> _sw32 ( dest - 4 , - value ) ; <S2SV_EndBug> continue ; } maxout = neblock ; # if defined ( HAVE_SNAPPY ) if ( context -> compcode == BLOSC_SNAPPY ) { maxout = ( int32_t ) snappy_max_compressed_length ( ( size_t ) neblock ) ; } # endif <S2SV_StartBug> if ( ntbytes + maxout > maxbytes ) { <S2SV_EndBug> <S2SV_StartBug> maxout = ( int64_t ) maxbytes - ( int64_t ) ntbytes ; <S2SV_EndBug> if ( maxout <= 0 ) { return 0 ; } } if ( dict_training ) { memcpy ( dest , _src + j * neblock , ( unsigned int ) neblock ) ; cbytes = ( int32_t ) neblock ; } else if ( context -> compcode == BLOSC_BLOSCLZ ) { cbytes = blosclz_compress ( context -> clevel , _src + j * neblock , ( int ) neblock , dest , ( int ) maxout ) ; } # if defined ( HAVE_LZ4 ) else if ( context -> compcode == BLOSC_LZ4 ) { void * hash_table = NULL ; # ifdef HAVE_IPP hash_table = ( void * ) thread_context -> lz4_hash_table ; # endif cbytes = lz4_wrap_compress ( ( char * ) _src + j * neblock , ( size_t ) neblock , ( char * ) dest , ( size_t ) maxout , accel , hash_table ) ; } else if ( context -> compcode == BLOSC_LZ4HC ) { cbytes = lz4hc_wrap_compress ( ( char * ) _src + j * neblock , ( size_t ) neblock , ( char * ) dest , ( size_t ) maxout , context -> clevel ) ; } # endif # if defined ( HAVE_LIZARD ) else if ( context -> compcode == BLOSC_LIZARD ) { cbytes = lizard_wrap_compress ( ( char * ) _src + j * neblock , ( size_t ) neblock , ( char * ) dest , ( size_t ) maxout , accel ) ; } # endif # if defined ( HAVE_SNAPPY ) else if ( context -> compcode == BLOSC_SNAPPY ) { cbytes = snappy_wrap_compress ( ( char * ) _src + j * neblock , ( size_t ) neblock , ( char * ) dest , ( size_t ) maxout ) ; } # endif # if defined ( HAVE_ZLIB ) else if ( context -> compcode == BLOSC_ZLIB ) { cbytes = zlib_wrap_compress ( ( char * ) _src + j * neblock , ( size_t ) neblock , ( char * ) dest , ( size_t ) maxout , context -> clevel ) ; } # endif # if defined ( HAVE_ZSTD ) else if ( context -> compcode == BLOSC_ZSTD ) { cbytes = zstd_wrap_compress ( thread_context , ( char * ) _src + j * neblock , ( size_t ) neblock , ( char * ) dest , ( size_t ) maxout , context -> clevel ) ; } # endif else { blosc_compcode_to_compname ( context -> compcode , & compname ) ; fprintf ( stderr , \"Blosc<S2SV_blank>has<S2SV_blank>not<S2SV_blank>been<S2SV_blank>compiled<S2SV_blank>with<S2SV_blank>\\'%s\\'<S2SV_blank>\" , compname ) ; fprintf ( stderr , \"compression<S2SV_blank>support.<S2SV_blank><S2SV_blank>Please<S2SV_blank>use<S2SV_blank>one<S2SV_blank>having<S2SV_blank>it.\" ) ; return - 5 ; } if ( cbytes > maxout ) { return - 1 ; } if ( cbytes < 0 ) { return - 2 ; } if ( ! dict_training ) { if ( cbytes == 0 || cbytes == neblock ) { <S2SV_StartBug> if ( ( ntbytes + neblock ) > maxbytes ) { <S2SV_EndBug> return 0 ; } memcpy ( dest , _src + j * neblock , ( unsigned int ) neblock ) ; cbytes = neblock ; } _sw32 ( dest - 4 , cbytes ) ; } dest += cbytes ; ntbytes += cbytes ; ctbytes += cbytes ; } return ctbytes ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ntbytes , int32_t destsize <S2SV_ModEnd> , const uint8_t <S2SV_ModStart> neblock ] ; if ( ntbytes > destsize ) { return - 1 ; } <S2SV_ModStart> + maxout > destsize <S2SV_ModEnd> ) { maxout <S2SV_ModStart> ( int64_t ) destsize <S2SV_ModEnd> - ( int64_t <S2SV_ModStart> neblock ) > destsize <S2SV_ModEnd> ) { return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3132\n\n```\nCWE-415 SPL_METHOD ( SplDoublyLinkedList , offsetSet ) { zval * zindex , * value ; spl_dllist_object * intern ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) , \"zz\" , & zindex , & value ) == FAILURE ) { return ; } intern = Z_SPLDLLIST_P ( getThis ( ) ) ; if ( Z_TYPE_P ( zindex ) == IS_NULL ) { spl_ptr_llist_push ( intern -> llist , value ) ; } else { zend_long index ; spl_ptr_llist_element * element ; index = spl_offset_convert_to_long ( zindex ) ; if ( index < 0 || index >= intern -> llist -> count ) { <S2SV_StartBug> zval_ptr_dtor ( value ) ; <S2SV_EndBug> zend_throw_exception ( spl_ce_OutOfRangeException , \"Offset<S2SV_blank>invalid<S2SV_blank>or<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\" , 0 ) ; return ; } element = spl_ptr_llist_offset ( intern -> llist , index , intern -> flags & SPL_DLLIST_IT_LIFO ) ; if ( element != NULL ) { if ( intern -> llist -> dtor ) { intern -> llist -> dtor ( element ) ; } zval_ptr_dtor ( & element -> data ) ; ZVAL_COPY_VALUE ( & element -> data , value ) ; if ( intern -> llist -> ctor ) { intern -> llist -> ctor ( element ) ; } } else { zval_ptr_dtor ( value ) ; zend_throw_exception ( spl_ce_OutOfRangeException , \"Offset<S2SV_blank>invalid\" , 0 ) ; return ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count ) { <S2SV_ModEnd> zend_throw_exception ( spl_ce_OutOfRangeException\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1792\n\n```\nCWE-399 static int cms_copy_content ( BIO * out , BIO * in , unsigned int flags ) { unsigned char buf [ 4096 ] ; int r = 0 , i ; <S2SV_StartBug> BIO * tmpout = NULL ; <S2SV_EndBug> if ( out == NULL ) tmpout = BIO_new ( BIO_s_null ( ) ) ; else if ( flags & CMS_TEXT ) { <S2SV_StartBug> tmpout = BIO_new ( BIO_s_mem ( ) ) ; <S2SV_EndBug> BIO_set_mem_eof_return ( tmpout , 0 ) ; } else tmpout = out ; if ( ! tmpout ) { CMSerr ( CMS_F_CMS_COPY_CONTENT , ERR_R_MALLOC_FAILURE ) ; goto err ; } for ( ; ; ) { i = BIO_read ( in , buf , sizeof ( buf ) ) ; if ( i <= 0 ) { if ( BIO_method_type ( in ) == BIO_TYPE_CIPHER ) { if ( ! BIO_get_cipher_status ( in ) ) goto err ; } if ( i < 0 ) goto err ; break ; } if ( tmpout && ( BIO_write ( tmpout , buf , i ) != i ) ) goto err ; } if ( flags & CMS_TEXT ) { if ( ! SMIME_text ( tmpout , out ) ) { CMSerr ( CMS_F_CMS_COPY_CONTENT , CMS_R_SMIME_TEXT_ERROR ) ; goto err ; } } r = 1 ; err : if ( tmpout && ( tmpout != out ) ) BIO_free ( tmpout ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BIO * tmpout ; tmpout = cms_get_text_bio ( out , flags ) ; if ( ! tmpout ) { CMSerr ( CMS_F_CMS_COPY_CONTENT , ERR_R_MALLOC_FAILURE ) ; goto err ; } for ( ; ; ) { i = BIO_read ( in , buf , sizeof ( buf ) ) ; if ( i <= 0 ) { if ( BIO_method_type ( in ) == BIO_TYPE_CIPHER ) { if ( ! BIO_get_cipher_status ( in ) ) goto err ; } if ( i < 0 ) goto err ; break ; } if ( tmpout && ( BIO_write ( tmpout , buf , i ) != i ) ) goto err ; } <S2SV_ModEnd> if ( flags <S2SV_ModStart> CMS_TEXT ) { <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6254\n\n```\nCWE-119 static int parse_packet ( sockent_t * se , void * buffer , size_t buffer_size , int flags , const char * username ) { int status ; value_list_t vl = VALUE_LIST_INIT ; notification_t n ; # if HAVE_LIBGCRYPT int packet_was_signed = ( flags & PP_SIGNED ) ; int packet_was_encrypted = ( flags & PP_ENCRYPTED ) ; int printed_ignore_warning = 0 ; # endif memset ( & vl , '\\\\0' , sizeof ( vl ) ) ; memset ( & n , '\\\\0' , sizeof ( n ) ) ; status = 0 ; while ( ( status == 0 ) && ( 0 < buffer_size ) && ( ( unsigned int ) buffer_size > sizeof ( part_header_t ) ) ) { uint16_t pkg_length ; uint16_t pkg_type ; memcpy ( ( void * ) & pkg_type , ( void * ) buffer , sizeof ( pkg_type ) ) ; memcpy ( ( void * ) & pkg_length , ( void * ) ( buffer + sizeof ( pkg_type ) ) , sizeof ( pkg_length ) ) ; pkg_length = ntohs ( pkg_length ) ; pkg_type = ntohs ( pkg_type ) ; if ( pkg_length > buffer_size ) break ; if ( pkg_length < ( 2 * sizeof ( uint16_t ) ) ) break ; if ( pkg_type == TYPE_ENCR_AES256 ) { status = parse_part_encr_aes256 ( se , & buffer , & buffer_size , flags ) ; if ( status != 0 ) { ERROR ( \"network<S2SV_blank>plugin:<S2SV_blank>Decrypting<S2SV_blank>AES256<S2SV_blank>\" \"part<S2SV_blank>failed<S2SV_blank>\" \"with<S2SV_blank>status<S2SV_blank>%i.\" , status ) ; break ; } } # if HAVE_LIBGCRYPT else if ( ( se -> data . server . security_level == SECURITY_LEVEL_ENCRYPT ) && ( packet_was_encrypted == 0 ) ) { if ( printed_ignore_warning == 0 ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>Unencrypted<S2SV_blank>packet<S2SV_blank>or<S2SV_blank>\" \"part<S2SV_blank>has<S2SV_blank>been<S2SV_blank>ignored.\" ) ; printed_ignore_warning = 1 ; } buffer = ( ( char * ) buffer ) + pkg_length ; <S2SV_StartBug> continue ; <S2SV_EndBug> } # endif else if ( pkg_type == TYPE_SIGN_SHA256 ) { status = parse_part_sign_sha256 ( se , & buffer , & buffer_size , flags ) ; if ( status != 0 ) { ERROR ( \"network<S2SV_blank>plugin:<S2SV_blank>Verifying<S2SV_blank>HMAC-SHA-256<S2SV_blank>\" \"signature<S2SV_blank>failed<S2SV_blank>\" \"with<S2SV_blank>status<S2SV_blank>%i.\" , status ) ; break ; } } # if HAVE_LIBGCRYPT else if ( ( se -> data . server . security_level == SECURITY_LEVEL_SIGN ) && ( packet_was_encrypted == 0 ) && ( packet_was_signed == 0 ) ) { if ( printed_ignore_warning == 0 ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>Unsigned<S2SV_blank>packet<S2SV_blank>or<S2SV_blank>\" \"part<S2SV_blank>has<S2SV_blank>been<S2SV_blank>ignored.\" ) ; printed_ignore_warning = 1 ; } buffer = ( ( char * ) buffer ) + pkg_length ; <S2SV_StartBug> continue ; <S2SV_EndBug> } # endif else if ( pkg_type == TYPE_VALUES ) { status = parse_part_values ( & buffer , & buffer_size , & vl . values , & vl . values_len ) ; if ( status != 0 ) break ; network_dispatch_values ( & vl , username ) ; sfree ( vl . values ) ; } else if ( pkg_type == TYPE_TIME ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) { vl . time = TIME_T_TO_CDTIME_T ( tmp ) ; n . time = TIME_T_TO_CDTIME_T ( tmp ) ; } } else if ( pkg_type == TYPE_TIME_HR ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) { vl . time = ( cdtime_t ) tmp ; n . time = ( cdtime_t ) tmp ; } } else if ( pkg_type == TYPE_INTERVAL ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) vl . interval = TIME_T_TO_CDTIME_T ( tmp ) ; } else if ( pkg_type == TYPE_INTERVAL_HR ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) vl . interval = ( cdtime_t ) tmp ; } else if ( pkg_type == TYPE_HOST ) { status = parse_part_string ( & buffer , & buffer_size , vl . host , sizeof ( vl . host ) ) ; if ( status == 0 ) sstrncpy ( n . host , vl . host , sizeof ( n . host ) ) ; } else if ( pkg_type == TYPE_PLUGIN ) { status = parse_part_string ( & buffer , & buffer_size , vl . plugin , sizeof ( vl . plugin ) ) ; if ( status == 0 ) sstrncpy ( n . plugin , vl . plugin , sizeof ( n . plugin ) ) ; } else if ( pkg_type == TYPE_PLUGIN_INSTANCE ) { status = parse_part_string ( & buffer , & buffer_size , vl . plugin_instance , sizeof ( vl . plugin_instance ) ) ; if ( status == 0 ) sstrncpy ( n . plugin_instance , vl . plugin_instance , sizeof ( n . plugin_instance ) ) ; } else if ( pkg_type == TYPE_TYPE ) { status = parse_part_string ( & buffer , & buffer_size , vl . type , sizeof ( vl . type ) ) ; if ( status == 0 ) sstrncpy ( n . type , vl . type , sizeof ( n . type ) ) ; } else if ( pkg_type == TYPE_TYPE_INSTANCE ) { status = parse_part_string ( & buffer , & buffer_size , vl . type_instance , sizeof ( vl . type_instance ) ) ; if ( status == 0 ) sstrncpy ( n . type_instance , vl . type_instance , sizeof ( n . type_instance ) ) ; } else if ( pkg_type == TYPE_MESSAGE ) { status = parse_part_string ( & buffer , & buffer_size , n . message , sizeof ( n . message ) ) ; if ( status != 0 ) { } else if ( ( n . severity != NOTIF_FAILURE ) && ( n . severity != NOTIF_WARNING ) && ( n . severity != NOTIF_OKAY ) ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>\" \"Ignoring<S2SV_blank>notification<S2SV_blank>with<S2SV_blank>\" \"unknown<S2SV_blank>severity<S2SV_blank>%i.\" , n . severity ) ; } else if ( n . time <= 0 ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>\" \"Ignoring<S2SV_blank>notification<S2SV_blank>with<S2SV_blank>\" \"time<S2SV_blank>==<S2SV_blank>0.\" ) ; } else if ( strlen ( n . message ) <= 0 ) { INFO ( \"network<S2SV_blank>plugin:<S2SV_blank>\" \"Ignoring<S2SV_blank>notification<S2SV_blank>with<S2SV_blank>\" \"an<S2SV_blank>empty<S2SV_blank>message.\" ) ; } else { network_dispatch_notification ( & n ) ; } } else if ( pkg_type == TYPE_SEVERITY ) { uint64_t tmp = 0 ; status = parse_part_number ( & buffer , & buffer_size , & tmp ) ; if ( status == 0 ) n . severity = ( int ) tmp ; } else { DEBUG ( \"network<S2SV_blank>plugin:<S2SV_blank>parse_packet:<S2SV_blank>Unknown<S2SV_blank>part\" \"<S2SV_blank>type:<S2SV_blank>0x%04hx\" , pkg_type ) ; buffer = ( ( char * ) buffer ) + pkg_length ; <S2SV_StartBug> } <S2SV_EndBug> } if ( status == 0 && buffer_size > 0 ) WARNING ( \"network<S2SV_blank>plugin:<S2SV_blank>parse_packet:<S2SV_blank>Received<S2SV_blank>truncated<S2SV_blank>\" \"packet,<S2SV_blank>try<S2SV_blank>increasing<S2SV_blank>`MaxPacketSize\\'\" ) ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + pkg_length ; buffer_size -= ( size_t ) pkg_length ; <S2SV_ModStart> + pkg_length ; buffer_size -= ( size_t ) pkg_length ; <S2SV_ModStart> + pkg_length ; buffer_size -= ( size_t ) pkg_length ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 void cJSON_DeleteItemFromObject ( cJSON * object , const char * string ) { cJSON_Delete ( cJSON_DetachItemFromObject ( object , string ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9533\n\n```\nCWE-787 static int reverseSamplesBytes ( uint16 spp , uint16 bps , uint32 width , uint8 * src , uint8 * dst ) { int i ; uint32 col , bytes_per_pixel , col_offset ; uint8 bytebuff1 ; unsigned char swapbuff [ 32 ] ; if ( ( src == NULL ) || ( dst == NULL ) ) { TIFFError ( \"reverseSamplesBytes\" , \"Invalid<S2SV_blank>input<S2SV_blank>or<S2SV_blank>output<S2SV_blank>buffer\" ) ; return ( 1 ) ; } bytes_per_pixel = ( ( bps * spp ) + 7 ) / 8 ; <S2SV_StartBug> switch ( bps / 8 ) <S2SV_EndBug> { case 8 : case 4 : case 3 : case 2 : for ( col = 0 ; col < ( width / 2 ) ; col ++ ) { col_offset = col * bytes_per_pixel ; _TIFFmemcpy ( swapbuff , src + col_offset , bytes_per_pixel ) ; _TIFFmemcpy ( src + col_offset , dst - col_offset - bytes_per_pixel , bytes_per_pixel ) ; _TIFFmemcpy ( dst - col_offset - bytes_per_pixel , swapbuff , bytes_per_pixel ) ; } break ; case 1 : for ( col = 0 ; col < ( width / 2 ) ; col ++ ) { for ( i = 0 ; i < spp ; i ++ ) { bytebuff1 = * src ; * src ++ = * ( dst - spp + i ) ; * ( dst - spp + i ) = bytebuff1 ; } dst -= spp ; } break ; default : TIFFError ( \"reverseSamplesBytes\" , \"Unsupported<S2SV_blank>bit<S2SV_blank>depth<S2SV_blank>%d\" , bps ) ; return ( 1 ) ; } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> / 8 ; if ( bytes_per_pixel > sizeof ( swapbuff ) ) { TIFFError ( \"reverseSamplesBytes\" , \"bytes_per_pixel<S2SV_blank>too<S2SV_blank>large\" ) ; return ( 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 u_int chdlc_print ( netdissect_options * ndo , register const u_char * p , u_int length ) { u_int proto ; const u_char * bp = p ; if ( length < CHDLC_HDRLEN ) goto trunc ; ND_TCHECK2 ( * p , CHDLC_HDRLEN ) ; proto = EXTRACT_16BITS ( & p [ 2 ] ) ; if ( ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"%s,<S2SV_blank>ethertype<S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>length<S2SV_blank>%u:<S2SV_blank>\" , tok2str ( chdlc_cast_values , \"0x%02x\" , p [ 0 ] ) , tok2str ( ethertype_values , \"Unknown\" , proto ) , proto , length ) ) ; } length -= CHDLC_HDRLEN ; p += CHDLC_HDRLEN ; switch ( proto ) { case ETHERTYPE_IP : ip_print ( ndo , p , length ) ; break ; case ETHERTYPE_IPV6 : ip6_print ( ndo , p , length ) ; break ; case CHDLC_TYPE_SLARP : chdlc_slarp_print ( ndo , p , length ) ; break ; # if 0 case CHDLC_TYPE_CDP : chdlc_cdp_print ( p , length ) ; break ; # endif case ETHERTYPE_MPLS : case ETHERTYPE_MPLS_MULTI : mpls_print ( ndo , p , length ) ; break ; case ETHERTYPE_ISO : if ( length < 2 ) goto trunc ; ND_TCHECK_16BITS ( p ) ; if ( * ( p + 1 ) == 0x81 || * ( p + 1 ) == 0x82 || * ( p + 1 ) == 0x83 ) <S2SV_StartBug> isoclns_print ( ndo , p + 1 , length - 1 , ndo -> ndo_snapend - p - 1 ) ; <S2SV_EndBug> else <S2SV_StartBug> isoclns_print ( ndo , p , length , ndo -> ndo_snapend - p ) ; <S2SV_EndBug> break ; default : if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"unknown<S2SV_blank>CHDLC<S2SV_blank>protocol<S2SV_blank>(0x%04x)\" , proto ) ) ; break ; } return ( CHDLC_HDRLEN ) ; trunc : ND_PRINT ( ( ndo , \"[|chdlc]\" ) ) ; return ndo -> ndo_snapend - bp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length - 1 <S2SV_ModEnd> ) ; else <S2SV_ModStart> p , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14882\n\n```\nCWE-125 static void rpl_dio_printopt ( netdissect_options * ndo , const struct rpl_dio_genoption * opt , u_int length ) { if ( length < RPL_DIO_GENOPTION_LEN ) return ; length -= RPL_DIO_GENOPTION_LEN ; ND_TCHECK ( opt -> rpl_dio_len ) ; while ( ( opt -> rpl_dio_type == RPL_OPT_PAD0 && ( const u_char * ) opt < ndo -> ndo_snapend ) || ND_TTEST2 ( * opt , ( opt -> rpl_dio_len + 2 ) ) ) { unsigned int optlen = opt -> rpl_dio_len + 2 ; if ( opt -> rpl_dio_type == RPL_OPT_PAD0 ) { optlen = 1 ; ND_PRINT ( ( ndo , \"<S2SV_blank>opt:pad0\" ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>opt:%s<S2SV_blank>len:%u<S2SV_blank>\" , tok2str ( rpl_subopt_values , \"subopt:%u\" , opt -> rpl_dio_type ) , optlen ) ) ; if ( ndo -> ndo_vflag > 2 ) { unsigned int paylen = opt -> rpl_dio_len ; if ( paylen > length ) paylen = length ; hex_print ( ndo , \"<S2SV_blank>\" , ( ( const uint8_t * ) opt ) + RPL_DIO_GENOPTION_LEN , paylen ) ; } } opt = ( const struct rpl_dio_genoption * ) ( ( ( const char * ) opt ) + optlen ) ; length -= optlen ; <S2SV_StartBug> } <S2SV_EndBug> return ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>[|truncated]\" ) ) ; <S2SV_EndBug> return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -= optlen ; ND_TCHECK ( opt -> rpl_dio_len ) ; <S2SV_ModStart> ( ndo , \"%s\" , rpl_tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2119\n\n```\nCWE-119 static ssize_t macvtap_get_user ( struct macvtap_queue * q , struct msghdr * m , const struct iovec * iv , unsigned long total_len , size_t count , int noblock ) { struct sk_buff * skb ; struct macvlan_dev * vlan ; unsigned long len = total_len ; int err ; struct virtio_net_hdr vnet_hdr = { 0 } ; int vnet_hdr_len = 0 ; <S2SV_StartBug> int copylen ; <S2SV_EndBug> bool zerocopy = false ; if ( q -> flags & IFF_VNET_HDR ) { vnet_hdr_len = q -> vnet_hdr_sz ; err = - EINVAL ; if ( len < vnet_hdr_len ) goto err ; len -= vnet_hdr_len ; err = memcpy_fromiovecend ( ( void * ) & vnet_hdr , iv , 0 , sizeof ( vnet_hdr ) ) ; if ( err < 0 ) goto err ; if ( ( vnet_hdr . flags & VIRTIO_NET_HDR_F_NEEDS_CSUM ) && vnet_hdr . csum_start + vnet_hdr . csum_offset + 2 > vnet_hdr . hdr_len ) vnet_hdr . hdr_len = vnet_hdr . csum_start + vnet_hdr . csum_offset + 2 ; err = - EINVAL ; if ( vnet_hdr . hdr_len > len ) goto err ; } err = - EINVAL ; if ( unlikely ( len < ETH_HLEN ) ) goto err ; <S2SV_StartBug> if ( m && m -> msg_control && sock_flag ( & q -> sk , SOCK_ZEROCOPY ) ) <S2SV_EndBug> zerocopy = true ; if ( zerocopy ) { <S2SV_StartBug> copylen = vnet_hdr . hdr_len ; <S2SV_EndBug> if ( ! copylen ) copylen = GOODCOPY_LEN ; } else copylen = len ; skb = macvtap_alloc_skb ( & q -> sk , NET_IP_ALIGN , copylen , vnet_hdr . hdr_len , noblock , & err ) ; if ( ! skb ) goto err ; if ( zerocopy ) err = zerocopy_sg_from_iovec ( skb , iv , vnet_hdr_len , count ) ; else err = skb_copy_datagram_from_iovec ( skb , 0 , iv , vnet_hdr_len , len ) ; if ( err ) goto err_kfree ; skb_set_network_header ( skb , ETH_HLEN ) ; skb_reset_mac_header ( skb ) ; skb -> protocol = eth_hdr ( skb ) -> h_proto ; if ( vnet_hdr_len ) { err = macvtap_skb_from_vnet_hdr ( skb , & vnet_hdr ) ; if ( err ) goto err_kfree ; } rcu_read_lock_bh ( ) ; vlan = rcu_dereference_bh ( q -> vlan ) ; if ( zerocopy ) { skb_shinfo ( skb ) -> destructor_arg = m -> msg_control ; skb_shinfo ( skb ) -> tx_flags |= SKBTX_DEV_ZEROCOPY ; } if ( vlan ) macvlan_start_xmit ( skb , vlan -> dev ) ; else kfree_skb ( skb ) ; rcu_read_unlock_bh ( ) ; return total_len ; err_kfree : kfree_skb ( skb ) ; err : rcu_read_lock_bh ( ) ; vlan = rcu_dereference_bh ( q -> vlan ) ; if ( vlan ) vlan -> dev -> stats . tx_dropped ++ ; rcu_read_unlock_bh ( ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int copylen = 0 <S2SV_ModStart> goto err ; err = - EMSGSIZE ; if ( unlikely ( count > UIO_MAXIOV ) ) goto err ; <S2SV_ModStart> zerocopy ) { if ( count > MAX_SKB_FRAGS ) { copylen = iov_length ( iv , count - MAX_SKB_FRAGS ) ; if ( copylen < vnet_hdr_len ) copylen = 0 ; else copylen -= vnet_hdr_len ; } if ( copylen < vnet_hdr . hdr_len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5302\n\n```\nCWE-200 static void save_text_if_changed ( const char * name , const char * new_value ) { if ( ! g_hash_table_lookup ( g_loaded_texts , name ) ) return ; const char * old_value = g_cd ? problem_data_get_content_or_NULL ( g_cd , name ) : \"\" ; if ( ! old_value ) old_value = \"\" ; if ( strcmp ( new_value , old_value ) != 0 ) { struct dump_dir * dd = wizard_open_directory_for_writing ( g_dump_dir_name ) ; if ( dd ) dd_save_text ( dd , name , new_value ) ; dd_close ( dd ) ; <S2SV_StartBug> problem_data_reload_from_dump_dir ( ) ; <S2SV_EndBug> update_gui_state_from_problem_data ( 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dd ) ; <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3610\n\n```\nCWE-264 int kvm_set_msr ( struct kvm_vcpu * vcpu , struct msr_data * msr ) { <S2SV_StartBug> return kvm_x86_ops -> set_msr ( vcpu , msr ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> msr ) { switch ( msr -> index ) { case MSR_FS_BASE : case MSR_GS_BASE : case MSR_KERNEL_GS_BASE : case MSR_CSTAR : case MSR_LSTAR : if ( is_noncanonical_address ( msr -> data ) ) return 1 ; break ; case MSR_IA32_SYSENTER_EIP : case MSR_IA32_SYSENTER_ESP : msr -> data = get_canonical ( msr -> data ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 SYSCALL_DEFINE5 ( perf_event_open , struct perf_event_attr __user * , attr_uptr , pid_t , pid , int , cpu , int , group_fd , unsigned long , flags ) { struct perf_event * group_leader = NULL , * output_event = NULL ; struct perf_event * event , * sibling ; struct perf_event_attr attr ; <S2SV_StartBug> struct perf_event_context * ctx ; <S2SV_EndBug> struct file * event_file = NULL ; struct fd group = { NULL , 0 } ; struct task_struct * task = NULL ; struct pmu * pmu ; int event_fd ; int move_group = 0 ; int err ; int f_flags = O_RDWR ; if ( flags & ~ PERF_FLAG_ALL ) return - EINVAL ; err = perf_copy_attr ( attr_uptr , & attr ) ; if ( err ) return err ; if ( ! attr . exclude_kernel ) { if ( perf_paranoid_kernel ( ) && ! capable ( CAP_SYS_ADMIN ) ) return - EACCES ; } if ( attr . freq ) { if ( attr . sample_freq > sysctl_perf_event_sample_rate ) return - EINVAL ; } else { if ( attr . sample_period & ( 1ULL << 63 ) ) return - EINVAL ; } if ( ( flags & PERF_FLAG_PID_CGROUP ) && ( pid == - 1 || cpu == - 1 ) ) return - EINVAL ; if ( flags & PERF_FLAG_FD_CLOEXEC ) f_flags |= O_CLOEXEC ; event_fd = get_unused_fd_flags ( f_flags ) ; if ( event_fd < 0 ) return event_fd ; if ( group_fd != - 1 ) { err = perf_fget_light ( group_fd , & group ) ; if ( err ) goto err_fd ; group_leader = group . file -> private_data ; if ( flags & PERF_FLAG_FD_OUTPUT ) output_event = group_leader ; if ( flags & PERF_FLAG_FD_NO_GROUP ) group_leader = NULL ; } if ( pid != - 1 && ! ( flags & PERF_FLAG_PID_CGROUP ) ) { task = find_lively_task_by_vpid ( pid ) ; if ( IS_ERR ( task ) ) { err = PTR_ERR ( task ) ; goto err_group_fd ; } } if ( task && group_leader && group_leader -> attr . inherit != attr . inherit ) { err = - EINVAL ; goto err_task ; } get_online_cpus ( ) ; event = perf_event_alloc ( & attr , cpu , task , group_leader , NULL , NULL , NULL ) ; if ( IS_ERR ( event ) ) { err = PTR_ERR ( event ) ; goto err_cpus ; } if ( flags & PERF_FLAG_PID_CGROUP ) { err = perf_cgroup_connect ( pid , event , & attr , group_leader ) ; if ( err ) { __free_event ( event ) ; goto err_cpus ; } } if ( is_sampling_event ( event ) ) { if ( event -> pmu -> capabilities & PERF_PMU_CAP_NO_INTERRUPT ) { err = - ENOTSUPP ; goto err_alloc ; } } account_event ( event ) ; pmu = event -> pmu ; if ( group_leader && ( is_software_event ( event ) != is_software_event ( group_leader ) ) ) { if ( is_software_event ( event ) ) { pmu = group_leader -> pmu ; } else if ( is_software_event ( group_leader ) && ( group_leader -> group_flags & PERF_GROUP_SOFTWARE ) ) { move_group = 1 ; } } ctx = find_get_context ( pmu , task , event -> cpu ) ; if ( IS_ERR ( ctx ) ) { err = PTR_ERR ( ctx ) ; goto err_alloc ; } if ( task ) { put_task_struct ( task ) ; task = NULL ; } if ( group_leader ) { err = - EINVAL ; if ( group_leader -> group_leader != group_leader ) goto err_context ; if ( move_group ) { if ( group_leader -> ctx -> task != ctx -> task ) goto err_context ; if ( group_leader -> cpu != event -> cpu ) goto err_context ; } else { if ( group_leader -> ctx != ctx ) goto err_context ; } if ( attr . exclusive || attr . pinned ) goto err_context ; } if ( output_event ) { err = perf_event_set_output ( event , output_event ) ; if ( err ) goto err_context ; } event_file = anon_inode_getfile ( \"[perf_event]\" , & perf_fops , event , f_flags ) ; if ( IS_ERR ( event_file ) ) { err = PTR_ERR ( event_file ) ; goto err_context ; } if ( move_group ) { <S2SV_StartBug> struct perf_event_context * gctx = group_leader -> ctx ; <S2SV_EndBug> <S2SV_StartBug> mutex_lock ( & gctx -> mutex ) ; <S2SV_EndBug> <S2SV_StartBug> perf_remove_from_context ( group_leader , false ) ; <S2SV_EndBug> perf_event__state_init ( group_leader ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_remove_from_context ( sibling , false ) ; perf_event__state_init ( sibling ) ; put_ctx ( gctx ) ; } <S2SV_StartBug> mutex_unlock ( & gctx -> mutex ) ; <S2SV_EndBug> put_ctx ( gctx ) ; } WARN_ON_ONCE ( ctx -> parent_ctx ) ; mutex_lock ( & ctx -> mutex ) ; if ( move_group ) { synchronize_rcu ( ) ; perf_install_in_context ( ctx , group_leader , group_leader -> cpu ) ; get_ctx ( ctx ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_install_in_context ( ctx , sibling , sibling -> cpu ) ; get_ctx ( ctx ) ; } } perf_install_in_context ( ctx , event , event -> cpu ) ; perf_unpin_context ( ctx ) ; mutex_unlock ( & ctx -> mutex ) ; put_online_cpus ( ) ; event -> owner = current ; mutex_lock ( & current -> perf_event_mutex ) ; list_add_tail ( & event -> owner_entry , & current -> perf_event_list ) ; mutex_unlock ( & current -> perf_event_mutex ) ; perf_event__header_size ( event ) ; perf_event__id_header_size ( event ) ; fdput ( group ) ; fd_install ( event_fd , event_file ) ; return event_fd ; err_context : perf_unpin_context ( ctx ) ; put_ctx ( ctx ) ; err_alloc : free_event ( event ) ; err_cpus : put_online_cpus ( ) ; err_task : if ( task ) put_task_struct ( task ) ; err_group_fd : fdput ( group ) ; err_fd : put_unused_fd ( event_fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event_context * ctx , * uninitialized_var ( gctx ) <S2SV_ModStart> move_group ) { <S2SV_ModEnd> gctx = group_leader <S2SV_ModStart> -> ctx ; mutex_lock_double ( & gctx -> mutex , & ctx -> mutex ) ; perf_remove_from_context ( group_leader , false ) ; perf_event__state_init ( group_leader ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_remove_from_context ( sibling , false ) ; perf_event__state_init ( sibling ) ; put_ctx ( gctx ) ; } } else { <S2SV_ModStart> mutex_lock ( & ctx -> mutex ) ; } WARN_ON_ONCE ( ctx -> parent_ctx ) ; if ( move_group ) { synchronize_rcu ( ) ; perf_install_in_context ( ctx , group_leader , group_leader -> cpu ) ; get_ctx ( ctx ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_install_in_context ( ctx , sibling , sibling -> cpu ) ; get_ctx ( ctx ) ; } } perf_install_in_context ( ctx , event , event -> cpu ) ; perf_unpin_context ( ctx ) ; if ( move_group ) { mutex_unlock ( & <S2SV_ModStart> mutex ) ; <S2SV_ModEnd> put_ctx ( gctx <S2SV_ModStart> ) ; } <S2SV_ModEnd> mutex_unlock ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8970\n\n```\nCWE-476 static void * skcipher_bind ( const char * name , u32 type , u32 mask ) { <S2SV_StartBug> return crypto_alloc_skcipher ( name , type , mask ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mask ) { struct skcipher_tfm * tfm ; struct crypto_skcipher * skcipher ; tfm = kzalloc ( sizeof ( * tfm ) , GFP_KERNEL ) ; if ( ! tfm ) return ERR_PTR ( - ENOMEM ) ; skcipher = <S2SV_ModEnd> crypto_alloc_skcipher ( name <S2SV_ModStart> mask ) ; if ( IS_ERR ( skcipher ) ) { kfree ( tfm ) ; return ERR_CAST ( skcipher ) ; } tfm -> skcipher = skcipher ; return tfm ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-682(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8326\n\n```\nCWE-682 static int find_high_bit ( unsigned int x ) { int i ; for ( i = 31 ; i >= 0 ; i -- ) { <S2SV_StartBug> if ( x & ( 1 << i ) ) return i ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x & ( 1U << ( unsigned int ) <S2SV_ModEnd> i ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3525\n\n```\nCWE-20 static void _out_verify ( conn_t out , nad_t nad ) { int attr , ns ; jid_t from , to ; conn_t in ; char * rkey ; int valid ; attr = nad_find_attr ( nad , 0 , - 1 , \"from\" , NULL ) ; if ( attr < 0 || ( from = jid_new ( NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ) == NULL ) { log_debug ( ZONE , \"missing<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>from<S2SV_blank>on<S2SV_blank>db<S2SV_blank>verify<S2SV_blank>packet\" ) ; nad_free ( nad ) ; return ; } attr = nad_find_attr ( nad , 0 , - 1 , \"to\" , NULL ) ; if ( attr < 0 || ( to = jid_new ( NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ) == NULL ) { log_debug ( ZONE , \"missing<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>to<S2SV_blank>on<S2SV_blank>db<S2SV_blank>verify<S2SV_blank>packet\" ) ; jid_free ( from ) ; nad_free ( nad ) ; return ; } attr = nad_find_attr ( nad , 0 , - 1 , \"id\" , NULL ) ; if ( attr < 0 ) { log_debug ( ZONE , \"missing<S2SV_blank>id<S2SV_blank>on<S2SV_blank>db<S2SV_blank>verify<S2SV_blank>packet\" ) ; jid_free ( from ) ; jid_free ( to ) ; nad_free ( nad ) ; return ; } in = xhash_getx ( out -> s2s -> in , NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ; if ( in == NULL ) { log_debug ( ZONE , \"got<S2SV_blank>a<S2SV_blank>verify<S2SV_blank>for<S2SV_blank>incoming<S2SV_blank>conn<S2SV_blank>%.*s,<S2SV_blank>but<S2SV_blank>it<S2SV_blank>doesn\\'t<S2SV_blank>exist,<S2SV_blank>dropping<S2SV_blank>the<S2SV_blank>packet\" , NAD_AVAL_L ( nad , attr ) , NAD_AVAL ( nad , attr ) ) ; jid_free ( from ) ; jid_free ( to ) ; nad_free ( nad ) ; return ; } rkey = s2s_route_key ( NULL , to -> domain , from -> domain ) ; attr = nad_find_attr ( nad , 0 , - 1 , \"type\" , \"valid\" ) ; <S2SV_StartBug> if ( attr >= 0 ) { <S2SV_EndBug> xhash_put ( in -> states , pstrdup ( xhash_pool ( in -> states ) , rkey ) , ( void * ) conn_VALID ) ; log_write ( in -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>incoming<S2SV_blank>route<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>now<S2SV_blank>valid%s%s\" , in -> fd -> fd , in -> ip , in -> port , rkey , ( in -> s -> flags & SX_SSL_WRAPPER ) ? \",<S2SV_blank>TLS<S2SV_blank>negotiated\" : \"\" , in -> s -> compressed ? \",<S2SV_blank>ZLIB<S2SV_blank>compression<S2SV_blank>enabled\" : \"\" ) ; valid = 1 ; } else { log_write ( in -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>incoming<S2SV_blank>route<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>now<S2SV_blank>invalid\" , in -> fd -> fd , in -> ip , in -> port , rkey ) ; valid = 0 ; } free ( rkey ) ; nad_free ( nad ) ; -- out -> verify ; nad = nad_new ( ) ; ns = nad_add_namespace ( nad , uri_DIALBACK , \"db\" ) ; nad_append_elem ( nad , ns , \"result\" , 0 ) ; nad_append_attr ( nad , - 1 , \"to\" , from -> domain ) ; nad_append_attr ( nad , - 1 , \"from\" , to -> domain ) ; nad_append_attr ( nad , - 1 , \"type\" , valid ? \"valid\" : \"invalid\" ) ; sx_nad_write ( in -> s , nad ) ; if ( ! valid ) { sx_error ( in -> s , stream_err_INVALID_ID , \"dialback<S2SV_blank>negotiation<S2SV_blank>failed\" ) ; sx_close ( in -> s ) ; } jid_free ( from ) ; jid_free ( to ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> attr >= 0 && xhash_get ( in -> states , rkey ) == ( void * ) conn_INPROGRESS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6381\n\n```\nCWE-119 int qeth_snmp_command ( struct qeth_card * card , char __user * udata ) { struct qeth_cmd_buffer * iob ; struct qeth_ipa_cmd * cmd ; struct qeth_snmp_ureq * ureq ; <S2SV_StartBug> int req_len ; <S2SV_EndBug> struct qeth_arp_query_info qinfo = { 0 , } ; int rc = 0 ; QETH_CARD_TEXT ( card , 3 , \"snmpcmd\" ) ; if ( card -> info . guestlan ) return - EOPNOTSUPP ; if ( ( ! qeth_adp_supported ( card , IPA_SETADP_SET_SNMP_CONTROL ) ) && ( ! card -> options . layer2 ) ) { return - EOPNOTSUPP ; } if ( copy_from_user ( & req_len , udata + sizeof ( int ) , sizeof ( int ) ) ) <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> ureq = memdup_user ( udata , req_len + sizeof ( struct qeth_snmp_ureq_hdr ) ) ; if ( IS_ERR ( ureq ) ) { QETH_CARD_TEXT ( card , 2 , \"snmpnome\" ) ; return PTR_ERR ( ureq ) ; } qinfo . udata_len = ureq -> hdr . data_len ; qinfo . udata = kzalloc ( qinfo . udata_len , GFP_KERNEL ) ; if ( ! qinfo . udata ) { kfree ( ureq ) ; return - ENOMEM ; } qinfo . udata_offset = sizeof ( struct qeth_snmp_ureq_hdr ) ; iob = qeth_get_adapter_cmd ( card , IPA_SETADP_SET_SNMP_CONTROL , QETH_SNMP_SETADP_CMDLENGTH + req_len ) ; cmd = ( struct qeth_ipa_cmd * ) ( iob -> data + IPA_PDU_HEADER_SIZE ) ; memcpy ( & cmd -> data . setadapterparms . data . snmp , & ureq -> cmd , req_len ) ; rc = qeth_send_ipa_snmp_cmd ( card , iob , QETH_SETADP_BASE_LEN + req_len , qeth_snmp_command_cb , ( void * ) & qinfo ) ; if ( rc ) QETH_DBF_MESSAGE ( 2 , \"SNMP<S2SV_blank>command<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>%s:<S2SV_blank>(0x%x)\\\\n\" , QETH_CARD_IFNAME ( card ) , rc ) ; else { if ( copy_to_user ( udata , qinfo . udata , qinfo . udata_len ) ) rc = - EFAULT ; } kfree ( ureq ) ; kfree ( qinfo . udata ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ureq ; unsigned <S2SV_ModStart> return - EFAULT ; if ( req_len > ( QETH_BUFSIZE - IPA_PDU_HEADER_SIZE - sizeof ( struct qeth_ipacmd_hdr ) - sizeof ( struct qeth_ipacmd_setadpparms_hdr ) ) ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8481\n\n```\nCWE-399 int x86_decode_insn ( struct x86_emulate_ctxt * ctxt , void * insn , int insn_len ) { int rc = X86EMUL_CONTINUE ; int mode = ctxt -> mode ; int def_op_bytes , def_ad_bytes , goffset , simd_prefix ; bool op_prefix = false ; bool has_seg_override = false ; struct opcode opcode ; ctxt -> memop . type = OP_NONE ; ctxt -> memopp = NULL ; ctxt -> _eip = ctxt -> eip ; ctxt -> fetch . ptr = ctxt -> fetch . data ; ctxt -> fetch . end = ctxt -> fetch . data + insn_len ; ctxt -> opcode_len = 1 ; if ( insn_len > 0 ) memcpy ( ctxt -> fetch . data , insn , insn_len ) ; else { rc = __do_insn_fetch_bytes ( ctxt , 1 ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; } switch ( mode ) { case X86EMUL_MODE_REAL : case X86EMUL_MODE_VM86 : case X86EMUL_MODE_PROT16 : def_op_bytes = def_ad_bytes = 2 ; break ; case X86EMUL_MODE_PROT32 : def_op_bytes = def_ad_bytes = 4 ; break ; # ifdef CONFIG_X86_64 case X86EMUL_MODE_PROT64 : def_op_bytes = 4 ; def_ad_bytes = 8 ; break ; # endif default : return EMULATION_FAILED ; } ctxt -> op_bytes = def_op_bytes ; ctxt -> ad_bytes = def_ad_bytes ; for ( ; ; ) { switch ( ctxt -> b = insn_fetch ( u8 , ctxt ) ) { case 0x66 : op_prefix = true ; ctxt -> op_bytes = def_op_bytes ^ 6 ; break ; case 0x67 : if ( mode == X86EMUL_MODE_PROT64 ) ctxt -> ad_bytes = def_ad_bytes ^ 12 ; else ctxt -> ad_bytes = def_ad_bytes ^ 6 ; break ; case 0x26 : case 0x2e : case 0x36 : case 0x3e : has_seg_override = true ; ctxt -> seg_override = ( ctxt -> b >> 3 ) & 3 ; break ; case 0x64 : case 0x65 : has_seg_override = true ; ctxt -> seg_override = ctxt -> b & 7 ; break ; case 0x40 ... 0x4f : if ( mode != X86EMUL_MODE_PROT64 ) goto done_prefixes ; ctxt -> rex_prefix = ctxt -> b ; continue ; case 0xf0 : ctxt -> lock_prefix = 1 ; break ; case 0xf2 : case 0xf3 : ctxt -> rep_prefix = ctxt -> b ; break ; default : goto done_prefixes ; } ctxt -> rex_prefix = 0 ; } done_prefixes : if ( ctxt -> rex_prefix & 8 ) ctxt -> op_bytes = 8 ; opcode = opcode_table [ ctxt -> b ] ; if ( ctxt -> b == 0x0f ) { ctxt -> opcode_len = 2 ; ctxt -> b = insn_fetch ( u8 , ctxt ) ; opcode = twobyte_table [ ctxt -> b ] ; if ( ctxt -> b == 0x38 ) { ctxt -> opcode_len = 3 ; ctxt -> b = insn_fetch ( u8 , ctxt ) ; opcode = opcode_map_0f_38 [ ctxt -> b ] ; } } ctxt -> d = opcode . flags ; if ( ctxt -> d & ModRM ) ctxt -> modrm = insn_fetch ( u8 , ctxt ) ; if ( ctxt -> opcode_len == 1 && ( ctxt -> b == 0xc5 || ctxt -> b == 0xc4 ) && ( mode == X86EMUL_MODE_PROT64 || ( mode >= X86EMUL_MODE_PROT16 && ( ctxt -> modrm & 0x80 ) ) ) ) { ctxt -> d = NotImpl ; } while ( ctxt -> d & GroupMask ) { switch ( ctxt -> d & GroupMask ) { case Group : goffset = ( ctxt -> modrm >> 3 ) & 7 ; opcode = opcode . u . group [ goffset ] ; break ; case GroupDual : goffset = ( ctxt -> modrm >> 3 ) & 7 ; if ( ( ctxt -> modrm >> 6 ) == 3 ) opcode = opcode . u . gdual -> mod3 [ goffset ] ; else opcode = opcode . u . gdual -> mod012 [ goffset ] ; break ; case RMExt : goffset = ctxt -> modrm & 7 ; opcode = opcode . u . group [ goffset ] ; break ; case Prefix : if ( ctxt -> rep_prefix && op_prefix ) return EMULATION_FAILED ; simd_prefix = op_prefix ? 0x66 : ctxt -> rep_prefix ; switch ( simd_prefix ) { case 0x00 : opcode = opcode . u . gprefix -> pfx_no ; break ; case 0x66 : opcode = opcode . u . gprefix -> pfx_66 ; break ; case 0xf2 : opcode = opcode . u . gprefix -> pfx_f2 ; break ; case 0xf3 : opcode = opcode . u . gprefix -> pfx_f3 ; break ; } break ; case Escape : if ( ctxt -> modrm > 0xbf ) opcode = opcode . u . esc -> high [ ctxt -> modrm - 0xc0 ] ; else opcode = opcode . u . esc -> op [ ( ctxt -> modrm >> 3 ) & 7 ] ; break ; default : return EMULATION_FAILED ; } ctxt -> d &= ~ ( u64 ) GroupMask ; ctxt -> d |= opcode . flags ; } if ( ctxt -> d == 0 ) return EMULATION_FAILED ; ctxt -> execute = opcode . u . execute ; if ( unlikely ( ctxt -> ud ) && likely ( ! ( ctxt -> d & EmulateOnUD ) ) ) return EMULATION_FAILED ; if ( unlikely ( ctxt -> d & ( NotImpl | Stack | Op3264 | Sse | Mmx | Intercept | CheckPerm ) ) ) { ctxt -> check_perm = opcode . check_perm ; ctxt -> intercept = opcode . intercept ; if ( ctxt -> d & NotImpl ) return EMULATION_FAILED ; if ( mode == X86EMUL_MODE_PROT64 && ( ctxt -> d & Stack ) ) ctxt -> op_bytes = 8 ; if ( ctxt -> d & Op3264 ) { if ( mode == X86EMUL_MODE_PROT64 ) ctxt -> op_bytes = 8 ; else ctxt -> op_bytes = 4 ; } if ( ctxt -> d & Sse ) ctxt -> op_bytes = 16 ; else if ( ctxt -> d & Mmx ) ctxt -> op_bytes = 8 ; } if ( ctxt -> d & ModRM ) { rc = decode_modrm ( ctxt , & ctxt -> memop ) ; if ( ! has_seg_override ) { has_seg_override = true ; ctxt -> seg_override = ctxt -> modrm_seg ; } } else if ( ctxt -> d & MemAbs ) rc = decode_abs ( ctxt , & ctxt -> memop ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; if ( ! has_seg_override ) ctxt -> seg_override = VCPU_SREG_DS ; ctxt -> memop . addr . mem . seg = ctxt -> seg_override ; rc = decode_operand ( ctxt , & ctxt -> src , ( ctxt -> d >> SrcShift ) & OpMask ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; rc = decode_operand ( ctxt , & ctxt -> src2 , ( ctxt -> d >> Src2Shift ) & OpMask ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; rc = decode_operand ( ctxt , & ctxt -> dst , ( ctxt -> d >> DstShift ) & OpMask ) ; <S2SV_StartBug> done : <S2SV_EndBug> if ( ctxt -> rip_relative ) <S2SV_StartBug> ctxt -> memopp -> addr . mem . ea += ctxt -> _eip ; <S2SV_EndBug> return ( rc != X86EMUL_CONTINUE ) ? EMULATION_FAILED : EMULATION_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> OpMask ) ; <S2SV_ModEnd> if ( ctxt <S2SV_ModStart> -> _eip ; done :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t ssiProcessIncludeCommand ( HttpConnection * connection , const char_t * tag , size_t length , const char_t * uri , uint_t level ) { error_t error ; char_t * separator ; char_t * attribute ; char_t * value ; char_t * path ; char_t * p ; if ( length < 7 || length >= HTTP_SERVER_BUFFER_SIZE ) return ERROR_INVALID_TAG ; osMemcpy ( connection -> buffer , tag + 7 , length - 7 ) ; connection -> buffer [ length - 7 ] = '\\\\0' ; <S2SV_StartBug> separator = strchr ( connection -> buffer , '=' ) ; <S2SV_EndBug> if ( ! separator ) return ERROR_INVALID_TAG ; * separator = '\\\\0' ; attribute = strTrimWhitespace ( connection -> buffer ) ; value = strTrimWhitespace ( separator + 1 ) ; if ( value [ 0 ] == '\\\\'' || value [ 0 ] == \\'\\\\\"\\' ) value ++ ; length = osStrlen ( value ) ; if ( length > 0 ) { if ( value [ length - 1 ] == '\\\\'' || value [ length - 1 ] == \\'\\\\\"\\' ) value [ length - 1 ] = '\\\\0' ; } if ( osStrlen ( value ) > HTTP_SERVER_URI_MAX_LEN ) return ERROR_INVALID_TAG ; if ( ! osStrcasecmp ( attribute , \"file\" ) ) { path = osAllocMem ( osStrlen ( uri ) + osStrlen ( value ) + 1 ) ; if ( path == NULL ) return ERROR_OUT_OF_MEMORY ; osStrcpy ( path , uri ) ; p = strrchr ( path , '/' ) ; if ( p ) osStrcpy ( p + 1 , value ) ; else osStrcpy ( path , value ) ; } else if ( ! osStrcasecmp ( attribute , \"virtual\" ) ) { path = strDuplicate ( value ) ; if ( path == NULL ) return ERROR_OUT_OF_MEMORY ; } else { return ERROR_INVALID_TAG ; } if ( httpCompExtension ( value , \".stm\" ) || httpCompExtension ( value , \".shtm\" ) || httpCompExtension ( value , \".shtml\" ) ) { error = ssiExecuteScript ( connection , path , level + 1 ) ; } else { # if ( HTTP_SERVER_FS_SUPPORT == ENABLED ) FsFile * file ; httpGetAbsolutePath ( connection , path , connection -> buffer , HTTP_SERVER_BUFFER_SIZE ) ; file = fsOpenFile ( connection -> buffer , FS_FILE_MODE_READ ) ; if ( file ) { while ( 1 ) { error = fsReadFile ( file , connection -> buffer , HTTP_SERVER_BUFFER_SIZE , & length ) ; if ( error ) break ; error = httpWriteStream ( connection , connection -> buffer , length ) ; if ( error ) break ; } fsCloseFile ( file ) ; if ( error == ERROR_END_OF_FILE ) error = NO_ERROR ; } else { error = ERROR_NOT_FOUND ; } # else const uint8_t * data ; httpGetAbsolutePath ( connection , path , connection -> buffer , HTTP_SERVER_BUFFER_SIZE ) ; error = resGetData ( connection -> buffer , & data , & length ) ; if ( ! error ) error = httpWriteStream ( connection , data , length ) ; # endif } if ( error == ERROR_NOT_FOUND ) error = ERROR_INVALID_TAG ; osFreeMem ( path ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; separator = osStrchr <S2SV_ModEnd> ( connection ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_rc_clamp_pframe_target_size ( const VP9_COMP * const cpi , int target ) { const RATE_CONTROL * rc = & cpi -> rc ; <S2SV_StartBug> const int min_frame_target = MAX ( rc -> min_frame_bandwidth , <S2SV_EndBug> <S2SV_StartBug> rc -> av_per_frame_bandwidth >> 5 ) ; <S2SV_EndBug> if ( target < min_frame_target ) target = min_frame_target ; if ( cpi -> refresh_golden_frame && rc -> is_src_frame_alt_ref ) { target = min_frame_target ; } if ( target > rc -> max_frame_bandwidth ) target = rc -> max_frame_bandwidth ; <S2SV_StartBug> return target ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc ; const VP9EncoderConfig * oxcf = & cpi -> oxcf ; const <S2SV_ModStart> , rc -> avg_frame_bandwidth <S2SV_ModEnd> >> 5 ) <S2SV_ModStart> -> max_frame_bandwidth ; if ( oxcf -> rc_max_inter_bitrate_pct ) { const int max_rate = rc -> avg_frame_bandwidth * oxcf -> rc_max_inter_bitrate_pct / 100 ; target = MIN ( target , max_rate ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10506\n\n```\nCWE-369 static OPJ_BOOL opj_pi_next_cprl ( opj_pi_iterator_t * pi ) { opj_pi_comp_t * comp = NULL ; opj_pi_resolution_t * res = NULL ; OPJ_UINT32 index = 0 ; if ( ! pi -> first ) { comp = & pi -> comps [ pi -> compno ] ; goto LABEL_SKIP ; } else { pi -> first = 0 ; } for ( pi -> compno = pi -> poc . compno0 ; pi -> compno < pi -> poc . compno1 ; pi -> compno ++ ) { OPJ_UINT32 resno ; comp = & pi -> comps [ pi -> compno ] ; pi -> dx = 0 ; pi -> dy = 0 ; for ( resno = 0 ; resno < comp -> numresolutions ; resno ++ ) { OPJ_UINT32 dx , dy ; res = & comp -> resolutions [ resno ] ; dx = comp -> dx * ( 1u << ( res -> pdx + comp -> numresolutions - 1 - resno ) ) ; dy = comp -> dy * ( 1u << ( res -> pdy + comp -> numresolutions - 1 - resno ) ) ; pi -> dx = ! pi -> dx ? dx : opj_uint_min ( pi -> dx , dx ) ; pi -> dy = ! pi -> dy ? dy : opj_uint_min ( pi -> dy , dy ) ; } if ( ! pi -> tp_on ) { pi -> poc . ty0 = pi -> ty0 ; pi -> poc . tx0 = pi -> tx0 ; pi -> poc . ty1 = pi -> ty1 ; pi -> poc . tx1 = pi -> tx1 ; } for ( pi -> y = pi -> poc . ty0 ; pi -> y < pi -> poc . ty1 ; pi -> y += ( OPJ_INT32 ) ( pi -> dy - ( OPJ_UINT32 ) ( pi -> y % ( OPJ_INT32 ) pi -> dy ) ) ) { for ( pi -> x = pi -> poc . tx0 ; pi -> x < pi -> poc . tx1 ; pi -> x += ( OPJ_INT32 ) ( pi -> dx - ( OPJ_UINT32 ) ( pi -> x % ( OPJ_INT32 ) pi -> dx ) ) ) { for ( pi -> resno = pi -> poc . resno0 ; pi -> resno < opj_uint_min ( pi -> poc . resno1 , comp -> numresolutions ) ; pi -> resno ++ ) { OPJ_UINT32 levelno ; OPJ_INT32 trx0 , try0 ; OPJ_INT32 trx1 , try1 ; OPJ_UINT32 rpx , rpy ; OPJ_INT32 prci , prcj ; res = & comp -> resolutions [ pi -> resno ] ; levelno = comp -> numresolutions - 1 - pi -> resno ; trx0 = opj_int_ceildiv ( pi -> tx0 , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) ; try0 = opj_int_ceildiv ( pi -> ty0 , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) ; trx1 = opj_int_ceildiv ( pi -> tx1 , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) ; try1 = opj_int_ceildiv ( pi -> ty1 , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) ; rpx = res -> pdx + levelno ; rpy = res -> pdy + levelno ; <S2SV_StartBug> if ( ! ( ( pi -> y % ( OPJ_INT32 ) ( comp -> dy << rpy ) == 0 ) || ( ( pi -> y == pi -> ty0 ) && <S2SV_EndBug> ( ( try0 << levelno ) % ( 1 << rpy ) ) ) ) ) { continue ; } if ( ! ( ( pi -> x % ( OPJ_INT32 ) ( comp -> dx << rpx ) == 0 ) || ( ( pi -> x == pi -> tx0 ) && ( ( trx0 << levelno ) % ( 1 << rpx ) ) ) ) ) { continue ; } if ( ( res -> pw == 0 ) || ( res -> ph == 0 ) ) { continue ; } if ( ( trx0 == trx1 ) || ( try0 == try1 ) ) { continue ; } prci = opj_int_floordivpow2 ( opj_int_ceildiv ( pi -> x , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) , ( OPJ_INT32 ) res -> pdx ) - opj_int_floordivpow2 ( trx0 , ( OPJ_INT32 ) res -> pdx ) ; prcj = opj_int_floordivpow2 ( opj_int_ceildiv ( pi -> y , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) , ( OPJ_INT32 ) res -> pdy ) - opj_int_floordivpow2 ( try0 , ( OPJ_INT32 ) res -> pdy ) ; pi -> precno = ( OPJ_UINT32 ) ( prci + prcj * ( OPJ_INT32 ) res -> pw ) ; for ( pi -> layno = pi -> poc . layno0 ; pi -> layno < pi -> poc . layno1 ; pi -> layno ++ ) { index = pi -> layno * pi -> step_l + pi -> resno * pi -> step_r + pi -> compno * pi -> step_c + pi -> precno * pi -> step_p ; if ( ! pi -> include [ index ] ) { pi -> include [ index ] = 1 ; return OPJ_TRUE ; } LABEL_SKIP : ; } } } } } return OPJ_FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( rpx >= 31 || ( ( comp -> dx << rpx ) >> rpx ) != comp -> dx || rpy >= 31 || ( ( comp -> dy << rpy ) >> rpy ) != comp -> dy ) { continue ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum hstore_from_arrays ( PG_FUNCTION_ARGS ) { int32 buflen ; HStore * out ; Pairs * pairs ; Datum * key_datums ; bool * key_nulls ; int key_count ; Datum * value_datums ; bool * value_nulls ; int value_count ; ArrayType * key_array ; ArrayType * value_array ; int i ; if ( PG_ARGISNULL ( 0 ) ) PG_RETURN_NULL ( ) ; key_array = PG_GETARG_ARRAYTYPE_P ( 0 ) ; Assert ( ARR_ELEMTYPE ( key_array ) == TEXTOID ) ; if ( ARR_NDIM ( key_array ) > 1 ) ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"wrong<S2SV_blank>number<S2SV_blank>of<S2SV_blank>array<S2SV_blank>subscripts\" ) ) ) ; deconstruct_array ( key_array , TEXTOID , - 1 , false , 'i' , <S2SV_StartBug> & key_datums , & key_nulls , & key_count ) ; <S2SV_EndBug> if ( PG_ARGISNULL ( 1 ) ) { value_array = NULL ; value_count = key_count ; value_datums = NULL ; value_nulls = NULL ; } else { value_array = PG_GETARG_ARRAYTYPE_P ( 1 ) ; Assert ( ARR_ELEMTYPE ( value_array ) == TEXTOID ) ; if ( ARR_NDIM ( value_array ) > 1 ) ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"wrong<S2SV_blank>number<S2SV_blank>of<S2SV_blank>array<S2SV_blank>subscripts\" ) ) ) ; if ( ( ARR_NDIM ( key_array ) > 0 || ARR_NDIM ( value_array ) > 0 ) && ( ARR_NDIM ( key_array ) != ARR_NDIM ( value_array ) || ARR_DIMS ( key_array ) [ 0 ] != ARR_DIMS ( value_array ) [ 0 ] || ARR_LBOUND ( key_array ) [ 0 ] != ARR_LBOUND ( value_array ) [ 0 ] ) ) ereport ( ERROR , ( errcode ( ERRCODE_ARRAY_SUBSCRIPT_ERROR ) , errmsg ( \"arrays<S2SV_blank>must<S2SV_blank>have<S2SV_blank>same<S2SV_blank>bounds\" ) ) ) ; deconstruct_array ( value_array , TEXTOID , - 1 , false , 'i' , & value_datums , & value_nulls , & value_count ) ; Assert ( key_count == value_count ) ; } pairs = palloc ( key_count * sizeof ( Pairs ) ) ; for ( i = 0 ; i < key_count ; ++ i ) { if ( key_nulls [ i ] ) ereport ( ERROR , ( errcode ( ERRCODE_NULL_VALUE_NOT_ALLOWED ) , errmsg ( \"null<S2SV_blank>value<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>for<S2SV_blank>hstore<S2SV_blank>key\" ) ) ) ; if ( ! value_nulls || value_nulls [ i ] ) { pairs [ i ] . key = VARDATA_ANY ( key_datums [ i ] ) ; pairs [ i ] . val = NULL ; pairs [ i ] . keylen = hstoreCheckKeyLen ( VARSIZE_ANY_EXHDR ( key_datums [ i ] ) ) ; pairs [ i ] . vallen = 4 ; pairs [ i ] . isnull = true ; pairs [ i ] . needfree = false ; } else { pairs [ i ] . key = VARDATA_ANY ( key_datums [ i ] ) ; pairs [ i ] . val = VARDATA_ANY ( value_datums [ i ] ) ; pairs [ i ] . keylen = hstoreCheckKeyLen ( VARSIZE_ANY_EXHDR ( key_datums [ i ] ) ) ; pairs [ i ] . vallen = hstoreCheckValLen ( VARSIZE_ANY_EXHDR ( value_datums [ i ] ) ) ; pairs [ i ] . isnull = false ; pairs [ i ] . needfree = false ; } } key_count = hstoreUniquePairs ( pairs , key_count , & buflen ) ; out = hstorePairs ( pairs , key_count , buflen ) ; PG_RETURN_POINTER ( out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , & key_count ) ; if ( key_count > MaxAllocSize / sizeof ( Pairs ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>pairs<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , key_count , ( int ) ( MaxAllocSize / sizeof ( Pairs ) ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0205\n\n```\nCWE-119 static int futex_wait ( u32 __user * uaddr , int fshared , u32 val , ktime_t * abs_time , u32 bitset , int clockrt ) { struct hrtimer_sleeper timeout , * to = NULL ; struct restart_block * restart ; struct futex_hash_bucket * hb ; struct futex_q q ; int ret ; if ( ! bitset ) return - EINVAL ; q . pi_state = NULL ; q . bitset = bitset ; q . rt_waiter = NULL ; q . requeue_pi_key = NULL ; if ( abs_time ) { to = & timeout ; hrtimer_init_on_stack ( & to -> timer , clockrt ? CLOCK_REALTIME : CLOCK_MONOTONIC , HRTIMER_MODE_ABS ) ; hrtimer_init_sleeper ( to , current ) ; hrtimer_set_expires_range_ns ( & to -> timer , * abs_time , current -> timer_slack_ns ) ; } retry : ret = futex_wait_setup ( uaddr , val , fshared , & q , & hb ) ; if ( ret ) goto out ; futex_wait_queue_me ( hb , & q , to ) ; ret = 0 ; if ( ! unqueue_me ( & q ) ) <S2SV_StartBug> goto out_put_key ; <S2SV_EndBug> ret = - ETIMEDOUT ; if ( to && ! to -> task ) <S2SV_StartBug> goto out_put_key ; <S2SV_EndBug> <S2SV_StartBug> if ( ! signal_pending ( current ) ) { <S2SV_EndBug> put_futex_key ( fshared , & q . key ) ; goto retry ; <S2SV_StartBug> } <S2SV_EndBug> ret = - ERESTARTSYS ; if ( ! abs_time ) <S2SV_StartBug> goto out_put_key ; <S2SV_EndBug> restart = & current_thread_info ( ) -> restart_block ; restart -> fn = futex_wait_restart ; restart -> futex . uaddr = ( u32 * ) uaddr ; restart -> futex . val = val ; restart -> futex . time = abs_time -> tv64 ; restart -> futex . bitset = bitset ; restart -> futex . flags = FLAGS_HAS_TIMEOUT ; if ( fshared ) restart -> futex . flags |= FLAGS_SHARED ; if ( clockrt ) restart -> futex . flags |= FLAGS_CLOCKRT ; ret = - ERESTART_RESTARTBLOCK ; <S2SV_StartBug> out_put_key : <S2SV_EndBug> put_futex_key ( fshared , & q . key ) ; out : if ( to ) { hrtimer_cancel ( & to -> timer ) ; destroy_hrtimer_on_stack ( & to -> timer ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) goto out <S2SV_ModEnd> ; ret = <S2SV_ModStart> task ) goto out <S2SV_ModEnd> ; if ( <S2SV_ModStart> current ) ) <S2SV_ModEnd> goto retry ; <S2SV_ModStart> goto retry ; <S2SV_ModEnd> ret = - <S2SV_ModStart> abs_time ) goto out <S2SV_ModEnd> ; restart = <S2SV_ModStart> - ERESTART_RESTARTBLOCK ; <S2SV_ModEnd> out : if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6515\n\n```\nCWE-20 int auth_password ( Authctxt * authctxt , const char * password ) { struct passwd * pw = authctxt -> pw ; int result , ok = authctxt -> valid ; # if defined ( USE_SHADOW ) && defined ( HAS_SHADOW_EXPIRE ) static int expire_checked = 0 ; <S2SV_StartBug> # endif <S2SV_EndBug> # ifndef HAVE_CYGWIN if ( pw -> pw_uid == 0 && options . permit_root_login != PERMIT_YES ) ok = 0 ; # endif if ( * password == '\\\\0' && options . permit_empty_passwd == 0 ) return 0 ; # ifdef KRB5 if ( options . kerberos_authentication == 1 ) { int ret = auth_krb5_password ( authctxt , password ) ; if ( ret == 1 || ret == 0 ) return ret && ok ; } # endif # ifdef HAVE_CYGWIN { HANDLE hToken = cygwin_logon_user ( pw , password ) ; if ( hToken == INVALID_HANDLE_VALUE ) return 0 ; cygwin_set_impersonation_token ( hToken ) ; return ok ; } # endif # ifdef USE_PAM if ( options . use_pam ) return ( sshpam_auth_passwd ( authctxt , password ) && ok ) ; # endif # if defined ( USE_SHADOW ) && defined ( HAS_SHADOW_EXPIRE ) if ( ! expire_checked ) { expire_checked = 1 ; if ( auth_shadow_pwexpired ( authctxt ) ) authctxt -> force_pwchange = 1 ; } # endif result = sys_auth_passwd ( authctxt , password ) ; if ( authctxt -> force_pwchange ) disable_forwarding ( ) ; return ( result && ok ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif if ( strlen ( password ) > MAX_PASSWORD_LEN ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static const char * skip ( const char * in ) { while ( in && * in && ( unsigned char ) * in <= 32 ) in ++ ; return in ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 static int jpc_pi_nextpcrl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; int compno ; jpc_picomp_t * picomp ; int xstep ; int ystep ; uint_fast32_t trx0 ; uint_fast32_t try0 ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> xstep = 0 ; pi -> ystep = 0 ; for ( compno = 0 , picomp = pi -> picomps ; compno < pi -> numcomps ; ++ compno , ++ picomp ) { for ( rlvlno = 0 , pirlvl = picomp -> pirlvls ; rlvlno < picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { <S2SV_StartBug> xstep = picomp -> hsamp * ( 1 << <S2SV_EndBug> ( pirlvl -> prcwidthexpn + picomp -> numrlvls - rlvlno - 1 ) ) ; <S2SV_StartBug> ystep = picomp -> vsamp * ( 1 << <S2SV_EndBug> ( pirlvl -> prcheightexpn + picomp -> numrlvls - rlvlno - 1 ) ) ; pi -> xstep = ( ! pi -> xstep ) ? xstep : JAS_MIN ( pi -> xstep , xstep ) ; pi -> ystep = ( ! pi -> ystep ) ? ystep : JAS_MIN ( pi -> ystep , ystep ) ; } } pi -> prgvolfirst = 0 ; } for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < pi -> numcomps && pi -> compno < JAS_CAST ( int , pchg -> compnoend ) ; ++ pi -> compno , ++ pi -> picomp ) { for ( pi -> rlvlno = pchg -> rlvlnostart , pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; pi -> rlvlno < pi -> picomp -> numrlvls && pi -> rlvlno < pchg -> rlvlnoend ; ++ pi -> rlvlno , ++ pi -> pirlvl ) { if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; <S2SV_StartBug> if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( 1 << rpx ) ) ) || <S2SV_EndBug> ! ( pi -> x % ( pi -> picomp -> hsamp << rpx ) ) ) && <S2SV_StartBug> ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( 1 << rpy ) ) ) || <S2SV_EndBug> ! ( pi -> y % ( pi -> picomp -> vsamp << rpy ) ) ) ) { prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pirlvl ) { if ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 || pirlvl -> prcheightexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 ) { return - 1 ; } <S2SV_ModStart> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << ( pirlvl <S2SV_ModStart> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << ( pirlvl <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpx ) <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpy )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> static char * print_value ( cJSON * item , int depth , int fmt ) <S2SV_EndBug> { char * out = 0 ; if ( ! item ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> switch ( ( item -> type ) & 255 ) { <S2SV_StartBug> case cJSON_NULL : out = cJSON_strdup ( \"null\" ) ; break ; <S2SV_EndBug> case cJSON_False : out = cJSON_strdup ( \"false\" ) ; break ; case cJSON_True : out = cJSON_strdup ( \"true\" ) ; break ; <S2SV_StartBug> case cJSON_Number : out = print_number ( item ) ; break ; <S2SV_EndBug> <S2SV_StartBug> case cJSON_String : out = print_string ( item ) ; break ; <S2SV_EndBug> <S2SV_StartBug> case cJSON_Array : out = print_array ( item , depth , fmt ) ; break ; <S2SV_EndBug> <S2SV_StartBug> case cJSON_Object : out = print_object ( item , depth , fmt ) ; break ; <S2SV_EndBug> } return out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int fmt , printbuffer * p <S2SV_ModStart> return 0 ; if ( p ) { <S2SV_ModStart> case cJSON_NULL : { out = ensure ( p , 5 ) ; if ( out ) strcpy ( out , \"null\" ) ; break ; } case cJSON_False : { out = ensure ( p , 6 ) ; if ( out ) strcpy ( out , \"false\" ) ; break ; } case cJSON_True : { out = ensure ( p , 5 ) ; if ( out ) strcpy ( out , \"true\" ) ; break ; } case cJSON_Number : out = print_number ( item , p ) ; break ; case cJSON_String : out = print_string ( item , p ) ; break ; case cJSON_Array : out = print_array ( item , depth , fmt , p ) ; break ; case cJSON_Object : out = print_object ( item , depth , fmt , p ) ; break ; } } else { switch ( ( item -> type ) & 255 ) { case cJSON_NULL : <S2SV_ModStart> print_number ( item , 0 <S2SV_ModStart> print_string ( item , 0 <S2SV_ModStart> depth , fmt , 0 <S2SV_ModStart> depth , fmt , 0 ) ; break ; } <S2SV_ModEnd> } return out\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int rd_inter16x16_uv ( VP8_COMP * cpi , MACROBLOCK * x , int * rate , int * distortion , int fullpixel ) <S2SV_StartBug> { <S2SV_EndBug> vp8_build_inter16x16_predictors_mbuv ( & x -> e_mbd ) ; vp8_subtract_mbuv ( x -> src_diff , x -> src . u_buffer , x -> src . v_buffer , x -> src . uv_stride , & x -> e_mbd . predictor [ 256 ] , & x -> e_mbd . predictor [ 320 ] , 8 ) ; vp8_transform_mbuv ( x ) ; vp8_quantize_mbuv ( x ) ; * rate = rd_cost_mbuv ( x ) ; * distortion = vp8_mbuverror ( x ) / 4 ; return RDCOST ( x -> rdmult , x -> rddiv , * rate , * distortion ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fullpixel ) { ( void ) cpi ; ( void ) fullpixel ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void update_coef_probs ( VP9_COMP * cpi , vp9_writer * w ) { <S2SV_EndBug> const TX_MODE tx_mode = cpi -> common . tx_mode ; const TX_SIZE max_tx_size = tx_mode_to_biggest_tx_size [ tx_mode ] ; TX_SIZE tx_size ; <S2SV_StartBug> vp9_coeff_stats frame_branch_ct [ TX_SIZES ] [ PLANE_TYPES ] ; <S2SV_EndBug> vp9_clear_system_state ( ) ; for ( tx_size = TX_4X4 ; tx_size <= TX_32X32 ; ++ tx_size ) build_tree_distribution ( cpi , tx_size , frame_branch_ct [ tx_size ] ) ; <S2SV_StartBug> for ( tx_size = TX_4X4 ; tx_size <= max_tx_size ; ++ tx_size ) <S2SV_EndBug> <S2SV_StartBug> update_coef_probs_common ( w , cpi , tx_size , frame_branch_ct [ tx_size ] ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , vpx_writer <S2SV_ModEnd> * w ) <S2SV_ModStart> TX_SIZE tx_size ; <S2SV_ModEnd> for ( tx_size <S2SV_ModStart> ++ tx_size ) { vp9_coeff_stats frame_branch_ct [ PLANE_TYPES ] ; vp9_coeff_probs_model frame_coef_probs [ PLANE_TYPES ] ; if ( cpi -> td . counts -> tx . tx_totals [ tx_size ] <= 20 || ( tx_size >= TX_16X16 && cpi -> sf . tx_size_search_method == USE_TX_8X8 ) ) { vpx_write_bit ( w , 0 ) ; } else { build_tree_distribution ( cpi , tx_size , frame_branch_ct , frame_coef_probs ) ; <S2SV_ModStart> tx_size , frame_branch_ct , frame_coef_probs <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9491\n\n```\nCWE-000 static int devzvol_readdir ( struct vnode * dvp , struct uio * uiop , struct cred * cred , int * eofp , caller_context_t * ct_unused , int flags_unused ) { struct sdev_node * sdvp = VTOSDEV ( dvp ) ; char * ptr ; sdcmn_err13 ( ( \"zv<S2SV_blank>readdir<S2SV_blank>of<S2SV_blank>\\'%s\\'<S2SV_blank>%s\\'\" , sdvp -> sdev_path , sdvp -> sdev_name ) ) ; if ( strcmp ( sdvp -> sdev_path , ZVOL_DIR ) == 0 ) { struct vnode * vp ; rw_exit ( & sdvp -> sdev_contents ) ; ( void ) devname_lookup_func ( sdvp , \"dsk\" , & vp , cred , devzvol_create_dir , SDEV_VATTR ) ; VN_RELE ( vp ) ; ( void ) devname_lookup_func ( sdvp , \"rdsk\" , & vp , cred , devzvol_create_dir , SDEV_VATTR ) ; VN_RELE ( vp ) ; rw_enter ( & sdvp -> sdev_contents , RW_READER ) ; return ( devname_readdir_func ( dvp , uiop , cred , eofp , 0 ) ) ; } if ( uiop -> uio_offset == 0 ) devzvol_prunedir ( sdvp ) ; ptr = sdvp -> sdev_path + strlen ( ZVOL_DIR ) ; if ( ( strcmp ( ptr , \"/dsk\" ) == 0 ) || ( strcmp ( ptr , \"/rdsk\" ) == 0 ) ) { rw_exit ( & sdvp -> sdev_contents ) ; devzvol_create_pool_dirs ( dvp ) ; rw_enter ( & sdvp -> sdev_contents , RW_READER ) ; return ( devname_readdir_func ( dvp , uiop , cred , eofp , 0 ) ) ; } <S2SV_StartBug> ptr = strchr ( ptr + 1 , '/' ) + 1 ; <S2SV_EndBug> rw_exit ( & sdvp -> sdev_contents ) ; sdev_iter_datasets ( dvp , ZFS_IOC_DATASET_LIST_NEXT , ptr ) ; rw_enter ( & sdvp -> sdev_contents , RW_READER ) ; return ( devname_readdir_func ( dvp , uiop , cred , eofp , 0 ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , '/' ) ; if ( ptr == NULL ) return ( ENOENT ) ; ptr ++ <S2SV_ModEnd> ; rw_exit (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4998\n\n```\nCWE-119 static int check_entry_size_and_hooks ( struct ipt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ipt_entry ) != 0 || <S2SV_StartBug> ( unsigned char * ) e + sizeof ( struct ipt_entry ) >= limit ) { <S2SV_EndBug> duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ipt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ipt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10210\n\n```\nCWE-476 void test_re ( ) { assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi(s|p)/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssim*/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssa?/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/Miss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/(M|N)iss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/[M-N]iss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/(Mi|ssi)ssippi/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ppi\\\\\\\\tmi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ppi\\\\\\\\.mi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^mississippi/<S2SV_blank>fullword<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/mississippi.*mississippi$/s<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^ssi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi$/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssissi/<S2SV_blank>fullword<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^[isp]+/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_regexp_syntax_error ( \")\" ) ; assert_true_regexp ( \"abc\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"abc\" , \"xbc\" ) ; assert_false_regexp ( \"abc\" , \"axc\" ) ; assert_false_regexp ( \"abc\" , \"abx\" ) ; assert_true_regexp ( \"abc\" , \"xabcx\" , \"abc\" ) ; assert_true_regexp ( \"abc\" , \"ababc\" , \"abc\" ) ; assert_true_regexp ( \"a.c\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"a.b\" , \"a\\\\nb\" ) ; assert_false_regexp ( \"a.*b\" , \"acc\\\\nccb\" ) ; assert_false_regexp ( \"a.{4,5}b\" , \"acc\\\\nccb\" ) ; assert_true_regexp ( \"a.b\" , \"a\\\\rb\" , \"a\\\\rb\" ) ; assert_true_regexp ( \"ab*c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"ab*bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*bc\" , \"abbc\" , \"abbc\" ) ; assert_true_regexp ( \"a.*bb\" , \"abbbb\" , \"abbbb\" ) ; assert_true_regexp ( \"a.*?bbb\" , \"abbbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"a.*c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a.*c\" , \"axyzc\" , \"axyzc\" ) ; assert_true_regexp ( \"ab+c\" , \"abbc\" , \"abbc\" ) ; assert_false_regexp ( \"ab+c\" , \"ac\" ) ; assert_true_regexp ( \"ab+\" , \"abbbb\" , \"abbbb\" ) ; assert_true_regexp ( \"ab+?\" , \"abbbb\" , \"ab\" ) ; assert_false_regexp ( \"ab+bc\" , \"abc\" ) ; assert_false_regexp ( \"ab+bc\" , \"abq\" ) ; assert_true_regexp ( \"a+b+c\" , \"aabbabc\" , \"abc\" ) ; assert_false_regexp ( \"ab?bc\" , \"abbbbc\" ) ; assert_true_regexp ( \"ab?c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*?\" , \"abbb\" , \"a\" ) ; assert_true_regexp ( \"ab?c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab??\" , \"ab\" , \"a\" ) ; assert_true_regexp ( \"a(b|x)c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a(b|x)c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a(b|.)c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a(b|x|y)c\" , \"ayc\" , \"ayc\" ) ; assert_true_regexp ( \"(a+|b)*\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a|b|c|d|e\" , \"e\" , \"e\" ) ; assert_true_regexp ( \"(a|b|c|d|e)f\" , \"ef\" , \"ef\" ) ; assert_true_regexp ( \".b{2}\" , \"abb\" , \"abb\" ) ; assert_true_regexp ( \"ab{1}c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab{1,2}c\" , \"abbc\" , \"abbc\" ) ; assert_true_regexp ( \"ab{1,}c\" , \"abbbc\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{1,}b\" , \"ab\" ) ; assert_false_regexp ( \"ab{1}c\" , \"abbc\" ) ; assert_true_regexp ( \"ab{0,}c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"ab{0,}c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{,3}c\" , \"abbbc\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{,2}c\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{4,5}bc\" , \"abbbbc\" ) ; assert_true_regexp ( \"ab{2,3}?\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{.*}\" , \"ab{c}\" , \"ab{c}\" ) ; assert_true_regexp ( \".(aa){1,2}\" , \"aaaaaaaaaa\" , \"aaaaa\" ) ; assert_true_regexp ( \"a.(bc.){2}\" , \"aabcabca\" , \"aabcabca\" ) ; assert_true_regexp ( \"(ab{1,2}c){1,3}\" , \"abbcabc\" , \"abbcabc\" ) ; assert_true_regexp ( \"ab(c|cc){1,3}d\" , \"abccccccd\" , \"abccccccd\" ) ; assert_true_regexp ( \"a[bx]c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a[bx]c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a[0-9]*b\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a[0-9]*b\" , \"a0123456789b\" , \"a0123456789b\" ) ; assert_true_regexp ( \"[0-9a-f]+\" , \"0123456789abcdef\" , \"0123456789abcdef\" ) ; assert_true_regexp ( \"[0-9a-f]+\" , \"xyz0123456789xyz\" , \"0123456789\" ) ; assert_true_regexp ( \"a[\\\\\\\\s\\\\\\\\S]b\" , \"a<S2SV_blank>b\" , \"a<S2SV_blank>b\" ) ; assert_true_regexp ( \"a[\\\\\\\\d\\\\\\\\D]b\" , \"a1b\" , \"a1b\" ) ; assert_false_regexp ( \"[x-z]+\" , \"abc\" ) ; assert_true_regexp ( \"a[-]?c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a[-b]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[-b]\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a[b-]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[b-]\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"[a-c-e]\" , \"b\" , \"b\" ) ; assert_true_regexp ( \"[a-c-e]\" , \"-\" , \"-\" ) ; assert_false_regexp ( \"[a-c-e]\" , \"d\" ) ; assert_regexp_syntax_error ( \"[b-a]\" ) ; assert_regexp_syntax_error ( \"(abc\" ) ; assert_regexp_syntax_error ( \"abc)\" ) ; assert_regexp_syntax_error ( \"a[]b\" ) ; assert_regexp_syntax_error ( \"a\\\\\\\\\" ) ; assert_true_regexp ( \"a[\\\\\\\\-b]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[\\\\\\\\-b]\" , \"ab\" , \"ab\" ) ; assert_regexp_syntax_error ( \"a[\\\\\\\\\" ) ; assert_true_regexp ( \"a]\" , \"a]\" , \"a]\" ) ; assert_true_regexp ( \"a[]]b\" , \"a]b\" , \"a]b\" ) ; assert_true_regexp ( \"a[\\\\\\\\]]b\" , \"a]b\" , \"a]b\" ) ; assert_true_regexp ( \"a[^bc]d\" , \"aed\" , \"aed\" ) ; assert_false_regexp ( \"a[^bc]d\" , \"abd\" ) ; assert_true_regexp ( \"a[^-b]c\" , \"adc\" , \"adc\" ) ; assert_false_regexp ( \"a[^-b]c\" , \"a-c\" ) ; assert_false_regexp ( \"a[^]b]c\" , \"a]c\" ) ; assert_true_regexp ( \"a[^]b]c\" , \"adc\" , \"adc\" ) ; assert_true_regexp ( \"[^ab]*\" , \"cde\" , \"cde\" ) ; assert_regexp_syntax_error ( \")(\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a<S2SV_blank>b\" , \"a<S2SV_blank>b\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\tb\" , \"a\\\\tb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\rb\" , \"a\\\\rb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\nb\" , \"a\\\\nb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\vb\" , \"a\\\\vb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\fb\" , \"a\\\\fb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a<S2SV_blank>b\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\tb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\rb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\nb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\vb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\fb\" ) ; assert_true_regexp ( \"\\\\\\\\n\\\\\\\\r\\\\\\\\t\\\\\\\\f\\\\\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" ) ; assert_true_regexp ( \"[\\\\\\\\n][\\\\\\\\r][\\\\\\\\t][\\\\\\\\f][\\\\\\\\a]\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" ) ; assert_true_regexp ( \"\\\\\\\\x01\\\\\\\\x02\\\\\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" ) ; assert_true_regexp ( \"[\\\\\\\\x01-\\\\\\\\x03]+\" , \"\\\\x01\\\\x02\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" ) ; assert_false_regexp ( \"[\\\\\\\\x00-\\\\\\\\x02]+\" , \"\\\\x03\\\\x04\\\\x05\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D]\" , \"]\" , \"]\" ) ; assert_true_regexp ( \"[\\\\\\\\0x5A-\\\\\\\\x5D]\" , \"\\\\x5B\" , \"\\\\x5B\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"[\\\\\\\\x5C-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"a_c\" , \"a_c\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"a0c\" , \"a0c\" ) ; assert_false_regexp ( \"a\\\\\\\\wc\" , \"a*c\" ) ; assert_true_regexp ( \"\\\\\\\\w+\" , \"--ab_cd0123--\" , \"ab_cd0123\" ) ; assert_true_regexp ( \"[\\\\\\\\w]+\" , \"--ab_cd0123--\" , \"ab_cd0123\" ) ; assert_true_regexp ( \"\\\\\\\\D+\" , \"1234abc5678\" , \"abc\" ) ; assert_true_regexp ( \"[\\\\\\\\d]+\" , \"0123456789\" , \"0123456789\" ) ; assert_true_regexp ( \"[\\\\\\\\D]+\" , \"1234abc5678\" , \"abc\" ) ; assert_true_regexp ( \"[\\\\\\\\da-fA-F]+\" , \"123abc\" , \"123abc\" ) ; assert_false_regexp ( \"^(ab|cd)e\" , \"abcde\" ) ; assert_true_regexp ( \"(abc|)ef\" , \"abcdef\" , \"ef\" ) ; assert_true_regexp ( \"(abc|)ef\" , \"abcef\" , \"abcef\" ) ; assert_true_regexp ( \"\\\\\\\\babc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"abc\\\\\\\\b\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"\\\\\\\\babc\" , \"1abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\b\" , \"abc1\" ) ; assert_true_regexp ( \"abc\\\\\\\\s\\\\\\\\b\" , \"abc<S2SV_blank>x\" , \"abc<S2SV_blank>\" ) ; assert_false_regexp ( \"abc\\\\\\\\s\\\\\\\\b\" , \"abc<S2SV_blank><S2SV_blank>\" ) ; assert_true_regexp ( \"\\\\\\\\babc\\\\\\\\b\" , \"<S2SV_blank>abc<S2SV_blank>\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"<S2SV_blank>abc<S2SV_blank>\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"abcd\" , \"bcd\" ) ; assert_true_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\" , \"abcd\" , \"abc\" ) ; assert_false_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"abcd\" ) ; assert_false_regexp ( \"\\\\\\\\Babc\" , \"abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\B\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\Babc\" , \"1abc\" , \"abc\" ) ; assert_true_regexp ( \"abc\\\\\\\\B\" , \"abc1\" , \"abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\s\\\\\\\\B\" , \"abc<S2SV_blank>x\" ) ; assert_true_regexp ( \"abc\\\\\\\\s\\\\\\\\B\" , \"abc<S2SV_blank><S2SV_blank>\" , \"abc<S2SV_blank>\" ) ; assert_true_regexp ( \"\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\B\" , \"abcd\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\B\\\\\\\\w\\\\\\\\w\\\\\\\\w\" , \"abcd\" , \"bcd\" ) ; assert_false_regexp ( \"\\\\\\\\B\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\B\" , \"abcd\" ) ; assert_regexp_syntax_error ( \"(|abc)ef\" ) ; assert_true_regexp ( \"((a)(b)c)(d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"(a|b)c*d\" , \"abcd\" , \"bcd\" ) ; assert_true_regexp ( \"(ab|ab*)bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"a\" , \"a\" ) ; assert_true_regexp ( \"a([bc]*)(c*d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a([bc]+)(c*d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a([bc]*)(c+d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a[bcd]*dcdcde\" , \"adcdcde\" , \"adcdcde\" ) ; assert_false_regexp ( \"a[bcd]+dcdcde\" , \"adcdcde\" ) ; assert_true_regexp ( \"\\\\\\\\((.*),<S2SV_blank>(.*)\\\\\\\\)\" , \"(a,<S2SV_blank>b)\" , \"(a,<S2SV_blank>b)\" ) ; assert_true_regexp ( \"abc|123$\" , \"abcx\" , \"abc\" ) ; assert_false_regexp ( \"abc|123$\" , \"123x\" ) ; assert_true_regexp ( \"abc|^123\" , \"123\" , \"123\" ) ; assert_false_regexp ( \"abc|^123\" , \"x123\" ) ; assert_true_regexp ( \"^abc$\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"^abc$\" , \"abcc\" ) ; assert_true_regexp ( \"^abc\" , \"abcc\" , \"abc\" ) ; assert_false_regexp ( \"^abc$\" , \"aabc\" ) ; assert_true_regexp ( \"abc$\" , \"aabc\" , \"abc\" ) ; assert_true_regexp ( \"^a(bc+|b[eh])g|.h$\" , \"abhg\" , \"abhg\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"effgz\" , \"effgz\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"ij\" , \"ij\" ) ; assert_false_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"effg\" ) ; assert_false_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"bcdd\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"reffgz\" , \"effgz\" ) ; assert_true_regexp ( \"whatever|<S2SV_blank><S2SV_blank><S2SV_blank>x.<S2SV_blank><S2SV_blank><S2SV_blank>x\" , \"<S2SV_blank><S2SV_blank><S2SV_blank>xy<S2SV_blank><S2SV_blank><S2SV_blank>x\" , \"<S2SV_blank><S2SV_blank><S2SV_blank>xy<S2SV_blank><S2SV_blank><S2SV_blank>x\" ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"<S2SV_blank><S2SV_blank><S2SV_blank>xy<S2SV_blank><S2SV_blank><S2SV_blank>x\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\x0\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\x\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\xxy\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline signed short ReadPropertySignedShort ( const EndianType endian , const unsigned char * buffer ) { union { unsigned short unsigned_value ; signed short signed_value ; } quantum ; unsigned short value ; if ( endian == LSBEndian ) { <S2SV_StartBug> value = ( unsigned short ) ( ( buffer [ 1 ] << 8 ) | buffer [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; } <S2SV_StartBug> value = ( unsigned short ) ( ( ( ( unsigned char * ) buffer ) [ 0 ] << 8 ) | <S2SV_EndBug> <S2SV_StartBug> ( ( unsigned char * ) buffer ) [ 1 ] ) ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned short ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 8 ; value |= ( unsigned short ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; quantum . <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffff <S2SV_ModStart> value & 0xffff <S2SV_ModEnd> ; return ( <S2SV_ModStart> unsigned short ) buffer <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> ] << 8 ; value |= ( unsigned short ) buffer <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> [ 1 ] <S2SV_ModEnd> ; quantum . <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffff <S2SV_ModStart> value & 0xffff <S2SV_ModEnd> ; return (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15945\n\n```\nCWE-000 static void preinit_thread ( lua_State * L , global_State * g ) { G ( L ) = g ; L -> stack = NULL ; L -> ci = NULL ; L -> nci = 0 ; L -> stacksize = 0 ; L -> twups = L ; L -> errorJmp = NULL ; L -> hook = NULL ; L -> hookmask = 0 ; L -> basehookcount = 0 ; L -> allowhook = 1 ; resethookcount ( L ) ; L -> openupval = NULL ; L -> status = LUA_OK ; L -> errfunc = 0 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; L -> oldpc = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12990\n\n```\nCWE-835 static const u_char * ikev1_n_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , <S2SV_StartBug> const u_char * ep , uint32_t phase , uint32_t doi0 _U_ , <S2SV_EndBug> <S2SV_StartBug> uint32_t proto0 _U_ , int depth ) <S2SV_EndBug> { const struct ikev1_pl_n * p ; struct ikev1_pl_n n ; const u_char * cp ; const u_char * ep2 ; uint32_t doi ; uint32_t proto ; static const char * notify_error_str [ ] = { NULL , \"INVALID-PAYLOAD-TYPE\" , \"DOI-NOT-SUPPORTED\" , \"SITUATION-NOT-SUPPORTED\" , \"INVALID-COOKIE\" , \"INVALID-MAJOR-VERSION\" , \"INVALID-MINOR-VERSION\" , \"INVALID-EXCHANGE-TYPE\" , \"INVALID-FLAGS\" , \"INVALID-MESSAGE-ID\" , \"INVALID-PROTOCOL-ID\" , \"INVALID-SPI\" , \"INVALID-TRANSFORM-ID\" , \"ATTRIBUTES-NOT-SUPPORTED\" , \"NO-PROPOSAL-CHOSEN\" , \"BAD-PROPOSAL-SYNTAX\" , \"PAYLOAD-MALFORMED\" , \"INVALID-KEY-INFORMATION\" , \"INVALID-ID-INFORMATION\" , \"INVALID-CERT-ENCODING\" , \"INVALID-CERTIFICATE\" , \"CERT-TYPE-UNSUPPORTED\" , \"INVALID-CERT-AUTHORITY\" , \"INVALID-HASH-INFORMATION\" , \"AUTHENTICATION-FAILED\" , \"INVALID-SIGNATURE\" , \"ADDRESS-NOTIFICATION\" , \"NOTIFY-SA-LIFETIME\" , \"CERTIFICATE-UNAVAILABLE\" , \"UNSUPPORTED-EXCHANGE-TYPE\" , \"UNEQUAL-PAYLOAD-LENGTHS\" , } ; static const char * ipsec_notify_error_str [ ] = { \"RESERVED\" , } ; static const char * notify_status_str [ ] = { \"CONNECTED\" , } ; static const char * ipsec_notify_status_str [ ] = { \"RESPONDER-LIFETIME\" , \"REPLAY-STATUS\" , \"INITIAL-CONTACT\" , } ; # define NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( x ) , notify_error_str ) # define IPSEC_NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 8192 ) , ipsec_notify_error_str ) # define NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 16384 ) , notify_status_str ) # define IPSEC_NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 24576 ) , ipsec_notify_status_str ) ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; p = ( const struct ikev1_pl_n * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & n , ext , sizeof ( n ) ) ; doi = ntohl ( n . doi ) ; proto = n . prot_id ; if ( doi != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>doi=%d\" , doi ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%d\" , proto ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } return ( const u_char * ) ( p + 1 ) + n . spi_size ; } ND_PRINT ( ( ndo , \"<S2SV_blank>doi=ipsec\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%s\" , PROTOIDSTR ( proto ) ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 32768 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } cp = ( const u_char * ) ( p + 1 ) + n . spi_size ; ep2 = ( const u_char * ) p + item_len ; if ( cp < ep ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>orig=(\" ) ) ; <S2SV_EndBug> switch ( ntohs ( n . type ) ) { case IPSECDOI_NTYPE_RESPONDER_LIFETIME : { const struct attrmap * map = oakley_t_map ; <S2SV_StartBug> size_t nmap = sizeof ( oakley_t_map ) / sizeof ( oakley_t_map [ 0 ] ) ; <S2SV_EndBug> while ( cp < ep && cp < ep2 ) { cp = ikev1_attrmap_print ( ndo , cp , ( ep < ep2 ) ? ep : ep2 , map , nmap ) ; } <S2SV_StartBug> break ; <S2SV_EndBug> } <S2SV_StartBug> case IPSECDOI_NTYPE_REPLAY_STATUS : <S2SV_EndBug> ND_PRINT ( ( ndo , \"replay<S2SV_blank>detection<S2SV_blank>%sabled\" , EXTRACT_32BITS ( cp ) ? \"en\" : \"dis\" ) ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN : if ( ikev1_sub_print ( ndo , ISAKMP_NPTYPE_SA , ( const struct isakmp_gen * ) cp , ep , phase , doi , proto , depth ) == NULL ) return NULL ; break ; default : <S2SV_StartBug> isakmp_print ( ndo , cp , <S2SV_EndBug> item_len - sizeof ( * p ) - n . spi_size , NULL ) ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_EndBug> } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , uint32_t phase _U_ <S2SV_ModStart> , int depth _U_ <S2SV_ModStart> ep ) { <S2SV_ModEnd> switch ( ntohs <S2SV_ModStart> [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>attrs=(\" ) <S2SV_ModStart> ) ; } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_ModStart> case IPSECDOI_NTYPE_REPLAY_STATUS : ND_PRINT ( ( ndo , \"<S2SV_blank>status=(\" ) ) ; <S2SV_ModStart> ) ) ; ND_PRINT ( ( ndo , \")\" ) ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> ; default : if ( ndo -> ndo_vflag > 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>data=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( cp ) , ep - cp ) ) goto trunc ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; } else { if ( ! ike_show_somedata ( ndo , cp , ep ) ) goto trunc ; } break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2889\n\n```\nCWE-189 void bpf_jit_compile ( struct sk_filter * fp ) { u8 temp [ 64 ] ; u8 * prog ; unsigned int proglen , oldproglen = 0 ; int ilen , i ; int t_offset , f_offset ; u8 t_op , f_op , seen = 0 , pass ; u8 * image = NULL ; u8 * func ; int pc_ret0 = - 1 ; unsigned int cleanup_addr ; unsigned int * addrs ; const struct sock_filter * filter = fp -> insns ; int flen = fp -> len ; if ( ! bpf_jit_enable ) return ; addrs = kmalloc ( flen * sizeof ( * addrs ) , GFP_KERNEL ) ; if ( addrs == NULL ) return ; for ( proglen = 0 , i = 0 ; i < flen ; i ++ ) { proglen += 64 ; addrs [ i ] = proglen ; } cleanup_addr = proglen ; for ( pass = 0 ; pass < 10 ; pass ++ ) { proglen = 0 ; prog = temp ; if ( seen ) { EMIT4 ( 0x55 , 0x48 , 0x89 , 0xe5 ) ; EMIT4 ( 0x48 , 0x83 , 0xec , 96 ) ; if ( seen & ( SEEN_XREG | SEEN_DATAREF ) ) EMIT4 ( 0x48 , 0x89 , 0x5d , 0xf8 ) ; if ( seen & SEEN_XREG ) CLEAR_X ( ) ; if ( seen & SEEN_DATAREF ) { if ( offsetof ( struct sk_buff , len ) <= 127 ) EMIT4 ( 0x44 , 0x8b , 0x4f , offsetof ( struct sk_buff , len ) ) ; else { EMIT3 ( 0x44 , 0x8b , 0x8f ) ; EMIT ( offsetof ( struct sk_buff , len ) , 4 ) ; } if ( is_imm8 ( offsetof ( struct sk_buff , data_len ) ) ) EMIT4 ( 0x44 , 0x2b , 0x4f , offsetof ( struct sk_buff , data_len ) ) ; else { EMIT3 ( 0x44 , 0x2b , 0x8f ) ; EMIT ( offsetof ( struct sk_buff , data_len ) , 4 ) ; } if ( is_imm8 ( offsetof ( struct sk_buff , data ) ) ) EMIT4 ( 0x4c , 0x8b , 0x47 , offsetof ( struct sk_buff , data ) ) ; else { EMIT3 ( 0x4c , 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , data ) , 4 ) ; } } } switch ( filter [ 0 ] . code ) { case BPF_S_RET_K : case BPF_S_LD_W_LEN : case BPF_S_ANC_PROTOCOL : case BPF_S_ANC_IFINDEX : case BPF_S_ANC_MARK : case BPF_S_ANC_RXHASH : case BPF_S_ANC_CPU : case BPF_S_ANC_QUEUE : case BPF_S_LD_W_ABS : case BPF_S_LD_H_ABS : case BPF_S_LD_B_ABS : break ; default : CLEAR_A ( ) ; } for ( i = 0 ; i < flen ; i ++ ) { unsigned int K = filter [ i ] . k ; switch ( filter [ i ] . code ) { case BPF_S_ALU_ADD_X : seen |= SEEN_XREG ; EMIT2 ( 0x01 , 0xd8 ) ; break ; case BPF_S_ALU_ADD_K : if ( ! K ) break ; if ( is_imm8 ( K ) ) EMIT3 ( 0x83 , 0xc0 , K ) ; else EMIT1_off32 ( 0x05 , K ) ; break ; case BPF_S_ALU_SUB_X : seen |= SEEN_XREG ; EMIT2 ( 0x29 , 0xd8 ) ; break ; case BPF_S_ALU_SUB_K : if ( ! K ) break ; if ( is_imm8 ( K ) ) EMIT3 ( 0x83 , 0xe8 , K ) ; else EMIT1_off32 ( 0x2d , K ) ; break ; case BPF_S_ALU_MUL_X : seen |= SEEN_XREG ; EMIT3 ( 0x0f , 0xaf , 0xc3 ) ; break ; case BPF_S_ALU_MUL_K : if ( is_imm8 ( K ) ) EMIT3 ( 0x6b , 0xc0 , K ) ; else { EMIT2 ( 0x69 , 0xc0 ) ; EMIT ( K , 4 ) ; } break ; case BPF_S_ALU_DIV_X : seen |= SEEN_XREG ; EMIT2 ( 0x85 , 0xdb ) ; if ( pc_ret0 != - 1 ) EMIT_COND_JMP ( X86_JE , addrs [ pc_ret0 ] - ( addrs [ i ] - 4 ) ) ; else { EMIT_COND_JMP ( X86_JNE , 2 + 5 ) ; CLEAR_A ( ) ; EMIT1_off32 ( 0xe9 , cleanup_addr - ( addrs [ i ] - 4 ) ) ; } EMIT4 ( 0x31 , 0xd2 , 0xf7 , 0xf3 ) ; break ; case BPF_S_ALU_DIV_K : EMIT3 ( 0x48 , 0x69 , 0xc0 ) ; EMIT ( K , 4 ) ; EMIT4 ( 0x48 , 0xc1 , 0xe8 , 0x20 ) ; break ; case BPF_S_ALU_AND_X : seen |= SEEN_XREG ; EMIT2 ( 0x21 , 0xd8 ) ; break ; case BPF_S_ALU_AND_K : if ( K >= 0xFFFFFF00 ) { EMIT2 ( 0x24 , K & 0xFF ) ; } else if ( K >= 0xFFFF0000 ) { EMIT2 ( 0x66 , 0x25 ) ; EMIT2 ( K , 2 ) ; } else { EMIT1_off32 ( 0x25 , K ) ; } break ; case BPF_S_ALU_OR_X : seen |= SEEN_XREG ; EMIT2 ( 0x09 , 0xd8 ) ; break ; case BPF_S_ALU_OR_K : if ( is_imm8 ( K ) ) EMIT3 ( 0x83 , 0xc8 , K ) ; else EMIT1_off32 ( 0x0d , K ) ; break ; case BPF_S_ALU_LSH_X : seen |= SEEN_XREG ; EMIT4 ( 0x89 , 0xd9 , 0xd3 , 0xe0 ) ; break ; case BPF_S_ALU_LSH_K : if ( K == 0 ) break ; else if ( K == 1 ) EMIT2 ( 0xd1 , 0xe0 ) ; else EMIT3 ( 0xc1 , 0xe0 , K ) ; break ; case BPF_S_ALU_RSH_X : seen |= SEEN_XREG ; EMIT4 ( 0x89 , 0xd9 , 0xd3 , 0xe8 ) ; break ; case BPF_S_ALU_RSH_K : if ( K == 0 ) break ; else if ( K == 1 ) EMIT2 ( 0xd1 , 0xe8 ) ; else EMIT3 ( 0xc1 , 0xe8 , K ) ; break ; case BPF_S_ALU_NEG : EMIT2 ( 0xf7 , 0xd8 ) ; break ; case BPF_S_RET_K : if ( ! K ) { if ( pc_ret0 == - 1 ) pc_ret0 = i ; CLEAR_A ( ) ; } else { EMIT1_off32 ( 0xb8 , K ) ; } case BPF_S_RET_A : if ( seen ) { if ( i != flen - 1 ) { EMIT_JMP ( cleanup_addr - addrs [ i ] ) ; break ; } if ( seen & SEEN_XREG ) EMIT4 ( 0x48 , 0x8b , 0x5d , 0xf8 ) ; EMIT1 ( 0xc9 ) ; } EMIT1 ( 0xc3 ) ; break ; case BPF_S_MISC_TAX : seen |= SEEN_XREG ; EMIT2 ( 0x89 , 0xc3 ) ; break ; case BPF_S_MISC_TXA : seen |= SEEN_XREG ; EMIT2 ( 0x89 , 0xd8 ) ; break ; case BPF_S_LD_IMM : if ( ! K ) CLEAR_A ( ) ; else EMIT1_off32 ( 0xb8 , K ) ; break ; case BPF_S_LDX_IMM : seen |= SEEN_XREG ; if ( ! K ) CLEAR_X ( ) ; else EMIT1_off32 ( 0xbb , K ) ; break ; case BPF_S_LD_MEM : seen |= SEEN_MEM ; EMIT3 ( 0x8b , 0x45 , 0xf0 - K * 4 ) ; break ; case BPF_S_LDX_MEM : seen |= SEEN_XREG | SEEN_MEM ; EMIT3 ( 0x8b , 0x5d , 0xf0 - K * 4 ) ; break ; case BPF_S_ST : seen |= SEEN_MEM ; EMIT3 ( 0x89 , 0x45 , 0xf0 - K * 4 ) ; break ; case BPF_S_STX : seen |= SEEN_XREG | SEEN_MEM ; EMIT3 ( 0x89 , 0x5d , 0xf0 - K * 4 ) ; break ; case BPF_S_LD_W_LEN : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , len ) != 4 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , len ) ) ) EMIT3 ( 0x8b , 0x47 , offsetof ( struct sk_buff , len ) ) ; else { EMIT2 ( 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , len ) , 4 ) ; } break ; case BPF_S_LDX_W_LEN : seen |= SEEN_XREG ; if ( is_imm8 ( offsetof ( struct sk_buff , len ) ) ) EMIT3 ( 0x8b , 0x5f , offsetof ( struct sk_buff , len ) ) ; else { EMIT2 ( 0x8b , 0x9f ) ; EMIT ( offsetof ( struct sk_buff , len ) , 4 ) ; } break ; case BPF_S_ANC_PROTOCOL : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , protocol ) != 2 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , protocol ) ) ) { EMIT4 ( 0x0f , 0xb7 , 0x47 , offsetof ( struct sk_buff , protocol ) ) ; } else { EMIT3 ( 0x0f , 0xb7 , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , protocol ) , 4 ) ; } EMIT2 ( 0x86 , 0xc4 ) ; break ; case BPF_S_ANC_IFINDEX : if ( is_imm8 ( offsetof ( struct sk_buff , dev ) ) ) { EMIT4 ( 0x48 , 0x8b , 0x47 , offsetof ( struct sk_buff , dev ) ) ; } else { EMIT3 ( 0x48 , 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , dev ) , 4 ) ; } EMIT3 ( 0x48 , 0x85 , 0xc0 ) ; EMIT_COND_JMP ( X86_JE , cleanup_addr - ( addrs [ i ] - 6 ) ) ; BUILD_BUG_ON ( FIELD_SIZEOF ( struct net_device , ifindex ) != 4 ) ; EMIT2 ( 0x8b , 0x80 ) ; EMIT ( offsetof ( struct net_device , ifindex ) , 4 ) ; break ; case BPF_S_ANC_MARK : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , mark ) != 4 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , mark ) ) ) { EMIT3 ( 0x8b , 0x47 , offsetof ( struct sk_buff , mark ) ) ; } else { EMIT2 ( 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , mark ) , 4 ) ; } break ; case BPF_S_ANC_RXHASH : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , rxhash ) != 4 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , rxhash ) ) ) { EMIT3 ( 0x8b , 0x47 , offsetof ( struct sk_buff , rxhash ) ) ; } else { EMIT2 ( 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , rxhash ) , 4 ) ; } break ; case BPF_S_ANC_QUEUE : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , queue_mapping ) != 2 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , queue_mapping ) ) ) { EMIT4 ( 0x0f , 0xb7 , 0x47 , offsetof ( struct sk_buff , queue_mapping ) ) ; } else { EMIT3 ( 0x0f , 0xb7 , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , queue_mapping ) , 4 ) ; } break ; case BPF_S_ANC_CPU : # ifdef CONFIG_SMP EMIT4 ( 0x65 , 0x8b , 0x04 , 0x25 ) ; EMIT ( ( u32 ) ( unsigned long ) & cpu_number , 4 ) ; # else CLEAR_A ( ) ; # endif break ; case BPF_S_LD_W_ABS : func = sk_load_word ; common_load : seen |= SEEN_DATAREF ; if ( ( int ) K < 0 ) goto out ; t_offset = func - ( image + addrs [ i ] ) ; EMIT1_off32 ( 0xbe , K ) ; EMIT1_off32 ( 0xe8 , t_offset ) ; break ; case BPF_S_LD_H_ABS : func = sk_load_half ; goto common_load ; case BPF_S_LD_B_ABS : func = sk_load_byte ; goto common_load ; case BPF_S_LDX_B_MSH : if ( ( int ) K < 0 ) { if ( pc_ret0 != - 1 ) { EMIT_JMP ( addrs [ pc_ret0 ] - addrs [ i ] ) ; break ; } CLEAR_A ( ) ; EMIT_JMP ( cleanup_addr - addrs [ i ] ) ; break ; } seen |= SEEN_DATAREF | SEEN_XREG ; t_offset = sk_load_byte_msh - ( image + addrs [ i ] ) ; EMIT1_off32 ( 0xbe , K ) ; EMIT1_off32 ( 0xe8 , t_offset ) ; break ; case BPF_S_LD_W_IND : func = sk_load_word_ind ; common_load_ind : seen |= SEEN_DATAREF | SEEN_XREG ; t_offset = func - ( image + addrs [ i ] ) ; EMIT1_off32 ( 0xbe , K ) ; EMIT1_off32 ( 0xe8 , t_offset ) ; break ; case BPF_S_LD_H_IND : func = sk_load_half_ind ; goto common_load_ind ; case BPF_S_LD_B_IND : func = sk_load_byte_ind ; goto common_load_ind ; case BPF_S_JMP_JA : t_offset = addrs [ i + K ] - addrs [ i ] ; EMIT_JMP ( t_offset ) ; break ; COND_SEL ( BPF_S_JMP_JGT_K , X86_JA , X86_JBE ) ; COND_SEL ( BPF_S_JMP_JGE_K , X86_JAE , X86_JB ) ; COND_SEL ( BPF_S_JMP_JEQ_K , X86_JE , X86_JNE ) ; COND_SEL ( BPF_S_JMP_JSET_K , X86_JNE , X86_JE ) ; COND_SEL ( BPF_S_JMP_JGT_X , X86_JA , X86_JBE ) ; COND_SEL ( BPF_S_JMP_JGE_X , X86_JAE , X86_JB ) ; COND_SEL ( BPF_S_JMP_JEQ_X , X86_JE , X86_JNE ) ; COND_SEL ( BPF_S_JMP_JSET_X , X86_JNE , X86_JE ) ; cond_branch : f_offset = addrs [ i + filter [ i ] . jf ] - addrs [ i ] ; t_offset = addrs [ i + filter [ i ] . jt ] - addrs [ i ] ; if ( filter [ i ] . jt == filter [ i ] . jf ) { EMIT_JMP ( t_offset ) ; break ; } switch ( filter [ i ] . code ) { case BPF_S_JMP_JGT_X : case BPF_S_JMP_JGE_X : case BPF_S_JMP_JEQ_X : seen |= SEEN_XREG ; EMIT2 ( 0x39 , 0xd8 ) ; break ; case BPF_S_JMP_JSET_X : seen |= SEEN_XREG ; EMIT2 ( 0x85 , 0xd8 ) ; break ; case BPF_S_JMP_JEQ_K : if ( K == 0 ) { EMIT2 ( 0x85 , 0xc0 ) ; break ; } case BPF_S_JMP_JGT_K : case BPF_S_JMP_JGE_K : if ( K <= 127 ) EMIT3 ( 0x83 , 0xf8 , K ) ; else EMIT1_off32 ( 0x3d , K ) ; break ; case BPF_S_JMP_JSET_K : if ( K <= 0xFF ) EMIT2 ( 0xa8 , K ) ; else if ( ! ( K & 0xFFFF00FF ) ) EMIT3 ( 0xf6 , 0xc4 , K >> 8 ) ; else if ( K <= 0xFFFF ) { EMIT2 ( 0x66 , 0xa9 ) ; EMIT ( K , 2 ) ; } else { EMIT1_off32 ( 0xa9 , K ) ; } break ; } if ( filter [ i ] . jt != 0 ) { <S2SV_StartBug> if ( filter [ i ] . jf ) <S2SV_EndBug> <S2SV_StartBug> t_offset += is_near ( f_offset ) ? 2 : 6 ; <S2SV_EndBug> EMIT_COND_JMP ( t_op , t_offset ) ; if ( filter [ i ] . jf ) EMIT_JMP ( f_offset ) ; break ; } EMIT_COND_JMP ( f_op , f_offset ) ; break ; default : goto out ; } ilen = prog - temp ; if ( image ) { if ( unlikely ( proglen + ilen > oldproglen ) ) { pr_err ( \"bpb_jit_compile<S2SV_blank>fatal<S2SV_blank>error\\\\n\" ) ; kfree ( addrs ) ; module_free ( NULL , image ) ; return ; } memcpy ( image + proglen , temp , ilen ) ; } proglen += ilen ; addrs [ i ] = proglen ; prog = temp ; } cleanup_addr = proglen - 1 ; if ( seen ) cleanup_addr -= 1 ; if ( seen & SEEN_XREG ) cleanup_addr -= 4 ; if ( image ) { WARN_ON ( proglen != oldproglen ) ; break ; } if ( proglen == oldproglen ) { image = module_alloc ( max_t ( unsigned int , proglen , sizeof ( struct work_struct ) ) ) ; if ( ! image ) goto out ; } oldproglen = proglen ; } if ( bpf_jit_enable > 1 ) pr_err ( \"flen=%d<S2SV_blank>proglen=%u<S2SV_blank>pass=%d<S2SV_blank>image=%p\\\\n\" , flen , proglen , pass , image ) ; if ( image ) { if ( bpf_jit_enable > 1 ) print_hex_dump ( KERN_ERR , \"JIT<S2SV_blank>code:<S2SV_blank>\" , DUMP_PREFIX_ADDRESS , 16 , 1 , image , proglen , false ) ; bpf_flush_icache ( image , image + proglen ) ; fp -> bpf_func = ( void * ) image ; } out : kfree ( addrs ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] . jf && f_offset <S2SV_ModStart> ? 2 : 5 <S2SV_ModEnd> ; EMIT_COND_JMP (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18203\n\n```\nCWE-362 struct mapped_device * dm_get_from_kobject ( struct kobject * kobj ) { struct mapped_device * md ; md = container_of ( kobj , struct mapped_device , kobj_holder . kobj ) ; <S2SV_StartBug> if ( test_bit ( DMF_FREEING , & md -> flags ) || <S2SV_EndBug> <S2SV_StartBug> dm_deleting_md ( md ) ) <S2SV_EndBug> return NULL ; <S2SV_StartBug> dm_get ( md ) ; <S2SV_EndBug> return md ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> kobj ) ; spin_lock ( & _minor_lock ) ; <S2SV_ModStart> md ) ) { md = NULL ; goto out ; } <S2SV_ModEnd> dm_get ( md <S2SV_ModStart> dm_get ( md ) ; out : spin_unlock ( & _minor_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0555\n\n```\nCWE-200 WORD32 ih264d_parse_decode_slice ( UWORD8 u1_is_idr_slice , UWORD8 u1_nal_ref_idc , dec_struct_t * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; dec_pic_params_t * ps_pps ; dec_seq_params_t * ps_seq ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; pocstruct_t s_tmp_poc ; WORD32 i_delta_poc [ 2 ] ; WORD32 i4_poc = 0 ; UWORD16 u2_first_mb_in_slice , u2_frame_num ; UWORD8 u1_field_pic_flag , u1_redundant_pic_cnt = 0 , u1_slice_type ; UWORD32 u4_idr_pic_id = 0 ; UWORD8 u1_bottom_field_flag , u1_pic_order_cnt_type ; UWORD8 u1_nal_unit_type ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; WORD8 i1_is_end_of_poc ; WORD32 ret , end_of_frame ; WORD32 prev_slice_err , num_mb_skipped ; UWORD8 u1_mbaff ; pocstruct_t * ps_cur_poc ; UWORD32 u4_temp ; WORD32 i_temp ; UWORD32 u4_call_end_of_pic = 0 ; ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read_slc = 0 ; u2_first_mb_in_slice = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u2_first_mb_in_slice > ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) ) { return ERROR_CORRUPTED_SLICE ; } if ( ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) <= ps_dec -> u2_cur_mb_addr ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { return ERROR_CORRUPTED_SLICE ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>first_mb_in_slice\" , u2_first_mb_in_slice ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > 9 ) return ERROR_INV_SLC_TYPE_T ; u1_slice_type = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_type\" , ( u1_slice_type ) ) ; ps_dec -> u1_sl_typ_5_9 = 0 ; if ( u1_slice_type > 4 ) { u1_slice_type -= 5 ; ps_dec -> u1_sl_typ_5_9 = 1 ; } { UWORD32 skip ; if ( ( ps_dec -> i4_app_skip_mode == IVD_SKIP_PB ) || ( ps_dec -> i4_dec_skip_mode == IVD_SKIP_PB ) ) { UWORD32 u4_bit_stream_offset = 0 ; if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else if ( ( I_SLICE == u1_slice_type ) && ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else { skip = 1 ; } if ( ( 0 == u2_first_mb_in_slice ) && ( 1 == ps_dec -> u4_prev_nal_skipped ) ) { skip = 0 ; } if ( skip ) { ps_dec -> u4_prev_nal_skipped = 1 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_PB ; return 0 ; } else { if ( 1 == ps_dec -> u4_prev_nal_skipped ) { ps_dec -> u4_return_to_app = 1 ; return 0 ; } } } } u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp & MASK_ERR_PIC_SET_ID ) return ERROR_INV_SLICE_HDR_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_parameter_set_id\" , u4_temp ) ; ps_pps = & ps_dec -> ps_pps [ u4_temp ] ; if ( FALSE == ps_pps -> u1_is_valid ) { return ERROR_INV_SLICE_HDR_T ; } ps_seq = ps_pps -> ps_sps ; if ( ! ps_seq ) return ERROR_INV_SLICE_HDR_T ; if ( FALSE == ps_seq -> u1_is_valid ) return ERROR_INV_SLICE_HDR_T ; u2_frame_num = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_bits_in_frm_num ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>frame_num\" , u2_frame_num ) ; <S2SV_StartBug> if ( ! ps_dec -> u1_first_slice_in_stream && ( ps_dec -> u4_first_slice_in_pic == 2 ) ) <S2SV_EndBug> { pocstruct_t * ps_prev_poc = & ps_dec -> s_prev_pic_poc ; pocstruct_t * ps_cur_poc = & ps_dec -> s_cur_pic_poc ; ps_dec -> u2_mbx = 0xffff ; ps_dec -> u2_mby = 0 ; if ( ( 0 == u1_is_idr_slice ) && ps_cur_slice -> u1_nal_ref_idc ) ps_dec -> u2_prev_ref_frame_num = ps_cur_slice -> u2_frame_num ; if ( u1_is_idr_slice || ps_cur_slice -> u1_mmco_equalto5 ) ps_dec -> u2_prev_ref_frame_num = 0 ; if ( ps_dec -> ps_cur_sps -> u1_gaps_in_frame_num_value_allowed_flag ) { ih264d_decode_gaps_in_frame_num ( ps_dec , u2_frame_num ) ; } ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst ; ps_prev_poc -> u2_frame_num = ps_cur_poc -> u2_frame_num ; ps_prev_poc -> u1_mmco_equalto5 = ps_cur_slice -> u1_mmco_equalto5 ; if ( ps_cur_slice -> u1_nal_ref_idc ) { ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] ; ps_prev_poc -> u1_bot_field = ps_cur_poc -> u1_bot_field ; } ps_dec -> u2_total_mbs_coded = 0 ; } if ( ! ps_seq -> u1_frame_mbs_only_flag ) { u1_field_pic_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>field_pic_flag\" , u1_field_pic_flag ) ; u1_bottom_field_flag = 0 ; if ( u1_field_pic_flag ) { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan_fld ; u1_bottom_field_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>bottom_field_flag\" , u1_bottom_field_flag ) ; } else { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } } else { u1_field_pic_flag = 0 ; u1_bottom_field_flag = 0 ; ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } u1_nal_unit_type = SLICE_NAL ; if ( u1_is_idr_slice ) { if ( 0 == u1_field_pic_flag ) { ps_dec -> u1_top_bottom_decoded = TOP_FIELD_ONLY | BOT_FIELD_ONLY ; } u1_nal_unit_type = IDR_SLICE_NAL ; u4_idr_pic_id = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_idr_pic_id > 65535 ) return ERROR_INV_SLICE_HDR_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank><S2SV_blank>\" , u4_idr_pic_id ) ; } i_delta_poc [ 0 ] = i_delta_poc [ 1 ] = 0 ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; u1_pic_order_cnt_type = ps_seq -> u1_pic_order_cnt_type ; if ( u1_pic_order_cnt_type == 0 ) { i_temp = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_log2_max_pic_order_cnt_lsb_minus ) ; if ( i_temp < 0 || i_temp >= ps_seq -> i4_max_pic_order_cntLsb ) return ERROR_INV_SLICE_HDR_T ; s_tmp_poc . i4_pic_order_cnt_lsb = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_order_cnt_lsb\" , s_tmp_poc . i4_pic_order_cnt_lsb ) ; if ( ( ps_pps -> u1_pic_order_present_flag == 1 ) && ( ! u1_field_pic_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt_bottom = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt_bottom\" , s_tmp_poc . i4_delta_pic_order_cnt_bottom ) ; } } s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = 0 ; if ( u1_pic_order_cnt_type == 1 && ( ! ps_seq -> u1_delta_pic_order_always_zero_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[0]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] ) ; if ( ps_pps -> u1_pic_order_present_flag && ! u1_field_pic_flag ) { s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[1]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] ) ; } } if ( ps_pps -> u1_redundant_pic_cnt_present_flag ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_REDUNDANT_PIC_CNT ) return ERROR_INV_SLICE_HDR_T ; u1_redundant_pic_cnt = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>redundant_pic_cnt\" , u1_redundant_pic_cnt ) ; } i1_is_end_of_poc = 1 ; ps_dec -> ps_dec_err_status -> u1_err_flag &= MASK_REJECT_CUR_PIC ; <S2SV_StartBug> if ( ps_dec -> u4_first_slice_in_pic != 2 ) <S2SV_EndBug> { i1_is_end_of_poc = ih264d_is_end_of_pic ( u2_frame_num , u1_nal_ref_idc , & s_tmp_poc , & ps_dec -> s_cur_pic_poc , ps_cur_slice , u1_pic_order_cnt_type , u1_nal_unit_type , u4_idr_pic_id , u1_field_pic_flag , u1_bottom_field_flag ) ; if ( i1_is_end_of_poc ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } } u1_mbaff = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; prev_slice_err = 0 ; if ( i1_is_end_of_poc || ps_dec -> u1_first_slice_in_stream ) { if ( u2_frame_num != ps_dec -> u2_prv_frame_num && ps_dec -> u1_top_bottom_decoded != 0 && ps_dec -> u1_top_bottom_decoded != ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) ) { ps_dec -> u1_dangling_field = 1 ; if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; } else { prev_slice_err = 2 ; } if ( ps_dec -> u1_top_bottom_decoded == TOP_FIELD_ONLY ) ps_cur_slice -> u1_bottom_field_flag = 1 ; else ps_cur_slice -> u1_bottom_field_flag = 0 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & ps_dec -> s_cur_pic_poc ; u1_is_idr_slice = ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ; } <S2SV_StartBug> else if ( ps_dec -> u4_first_slice_in_pic == 2 ) <S2SV_EndBug> { if ( u2_first_mb_in_slice > 0 ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; ps_cur_poc = & s_tmp_poc ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; ps_cur_slice -> u1_mbaff_frame_flag = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; } } else { <S2SV_StartBug> if ( ps_dec -> u4_first_slice_in_pic ) <S2SV_EndBug> { prev_slice_err = 1 ; <S2SV_StartBug> num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; <S2SV_EndBug> } else { prev_slice_err = 2 ; <S2SV_StartBug> num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) <S2SV_EndBug> - ps_dec -> u2_total_mbs_coded ; } ps_cur_poc = & s_tmp_poc ; } } else { <S2SV_StartBug> if ( ( u2_first_mb_in_slice << u1_mbaff ) > ps_dec -> u2_total_mbs_coded ) <S2SV_EndBug> { prev_slice_err = 2 ; num_mb_skipped = ( u2_first_mb_in_slice << u1_mbaff ) <S2SV_StartBug> - ps_dec -> u2_total_mbs_coded ; <S2SV_EndBug> ps_cur_poc = & s_tmp_poc ; } else if ( ( u2_first_mb_in_slice << u1_mbaff ) < ps_dec -> u2_total_mbs_coded ) { return ERROR_CORRUPTED_SLICE ; } } if ( prev_slice_err ) { ret = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , u1_is_idr_slice , u2_frame_num , ps_cur_poc , prev_slice_err ) ; if ( ps_dec -> u1_dangling_field == 1 ) { ps_dec -> u1_second_field = 1 - ps_dec -> u1_second_field ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_dec -> u2_prv_frame_num = u2_frame_num ; ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_DANGLING_FIELD_IN_PIC ; } if ( prev_slice_err == 2 ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_IN_LAST_SLICE_OF_PIC ; } if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } if ( ret != OK ) return ret ; i1_is_end_of_poc = 0 ; } if ( ps_dec -> u4_first_slice_in_pic == 0 ) { ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } if ( ( ps_dec -> u1_separate_parse == 0 ) && ( ps_dec -> u4_first_slice_in_pic == 0 ) ) { ps_dec -> ps_decode_cur_slice ++ ; } ps_dec -> u1_slice_header_done = 0 ; if ( u1_field_pic_flag ) { ps_dec -> u2_prv_frame_num = u2_frame_num ; } if ( ps_cur_slice -> u1_mmco_equalto5 ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; if ( ! ps_cur_slice -> u1_field_pic_flag ) { i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; } else if ( ! ps_cur_slice -> u1_bottom_field_flag ) i4_temp_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; else i4_temp_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_poc = i4_temp_poc ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } <S2SV_StartBug> if ( ps_dec -> u4_first_slice_in_pic == 2 ) <S2SV_EndBug> { ret = ih264d_decode_pic_order_cnt ( u1_is_idr_slice , u2_frame_num , & ps_dec -> s_prev_pic_poc , & s_tmp_poc , ps_cur_slice , ps_pps , u1_nal_ref_idc , u1_bottom_field_flag , u1_field_pic_flag , & i4_poc ) ; if ( ret != OK ) return ret ; if ( i4_poc >= ps_dec -> i4_max_poc ) ps_dec -> i4_max_poc = i4_poc ; if ( i4_poc == 0 ) { ps_dec -> i4_prev_max_display_seq = ps_dec -> i4_prev_max_display_seq + ps_dec -> i4_max_poc + ps_dec -> u1_max_dec_frame_buffering + 1 ; ps_dec -> i4_max_poc = 0 ; } } ps_cur_slice -> i4_delta_pic_order_cnt [ 0 ] = i_delta_poc [ 0 ] ; ps_cur_slice -> i4_delta_pic_order_cnt [ 1 ] = i_delta_poc [ 1 ] ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u2_first_mb_in_slice = u2_first_mb_in_slice ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> u1_slice_type = u1_slice_type ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; if ( ps_seq -> u1_frame_mbs_only_flag ) ps_cur_slice -> u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; else ps_cur_slice -> u1_direct_8x8_inference_flag = 1 ; if ( u1_slice_type == B_SLICE ) { ps_cur_slice -> u1_direct_spatial_mv_pred_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>direct_spatial_mv_pred_flag\" , ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ; if ( ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ps_cur_slice -> pf_decodeDirect = ih264d_decode_spatial_direct ; else ps_cur_slice -> pf_decodeDirect = ih264d_decode_temporal_direct ; if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaffB ; } else { if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; } <S2SV_StartBug> if ( ps_dec -> u4_first_slice_in_pic == 2 ) <S2SV_EndBug> { if ( u2_first_mb_in_slice == 0 ) { ret = ih264d_start_of_pic ( ps_dec , i4_poc , & s_tmp_poc , u2_frame_num , ps_pps ) ; if ( ret != OK ) return ret ; } ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } { UWORD8 uc_nofield_nombaff ; uc_nofield_nombaff = ( ( ps_dec -> ps_cur_slice -> u1_field_pic_flag == 0 ) && ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag == 0 ) && ( u1_slice_type != B_SLICE ) && ( ps_dec -> ps_cur_pps -> u1_wted_pred_flag == 0 ) ) ; if ( uc_nofield_nombaff ) { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; } else { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_mp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_mp ; } } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u4_frm_sei_sync == u2_frame_num ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; ps_err -> u4_frm_sei_sync = SYNC_FRM_DEFAULT ; } ps_err -> u4_cur_frm = u2_frame_num ; } { WORD32 i4_skip_b_pic , i4_skip_p_pic ; i4_skip_b_pic = ( ps_dec -> u4_skip_frm_mask & B_SLC_BIT ) && ( B_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; i4_skip_p_pic = ( ps_dec -> u4_skip_frm_mask & P_SLC_BIT ) && ( P_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; if ( i4_skip_b_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } if ( i4_skip_p_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } } { UWORD16 u2_mb_x , u2_mb_y ; ps_dec -> i4_submb_ofst = ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) * SUB_BLK_SIZE ) - SUB_BLK_SIZE ; if ( u2_first_mb_in_slice ) { UWORD8 u1_mb_aff ; UWORD8 u1_field_pic ; UWORD16 u2_frm_wd_in_mbs ; u2_frm_wd_in_mbs = ps_seq -> u2_frm_wd_in_mbs ; u1_mb_aff = ps_cur_slice -> u1_mbaff_frame_flag ; u1_field_pic = ps_cur_slice -> u1_field_pic_flag ; { UWORD32 x_offset ; UWORD32 y_offset ; UWORD32 u4_frame_stride ; tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = MOD ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y = DIV ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y <<= u1_mb_aff ; if ( ( u2_mb_x > u2_frm_wd_in_mbs - 1 ) || ( u2_mb_y > ps_dec -> u2_frm_ht_in_mbs - 1 ) ) { return ERROR_CORRUPTED_SLICE ; } u4_frame_stride = ps_dec -> u2_frm_wd_y << u1_field_pic ; x_offset = u2_mb_x << 4 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 4 ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 + x_offset + y_offset ; u4_frame_stride = ps_dec -> u2_frm_wd_uv << u1_field_pic ; x_offset >>= 1 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 3 ; x_offset *= YUV420SP_FACTOR ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 + x_offset + y_offset ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 + x_offset + y_offset ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; if ( ps_dec -> u1_separate_parse == 1 ) { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } else { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } ps_dec -> u2_cur_mb_addr = ( u2_first_mb_in_slice << u1_mb_aff ) ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv + ( ( u2_first_mb_in_slice << u1_mb_aff ) << 4 ) ; } } else { tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = 0xffff ; u2_mb_y = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; } ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= ps_cur_slice -> u1_mbaff_frame_flag ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; } ps_bitstrm -> u4_max_ofst += ps_dec -> ps_cur_pps -> u1_entropy_coding_mode ; ps_dec -> u1_B = ( u1_slice_type == B_SLICE ) ; ps_dec -> u4_next_mb_skip = 0 ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> ps_cur_slice -> u2_first_mb_in_slice ; ps_dec -> ps_parse_cur_slice -> slice_type = ps_dec -> ps_cur_slice -> u1_slice_type ; ps_dec -> u4_start_recon_deblk = 1 ; { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( void * ) pu1_buf ; } if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } if ( u1_slice_type == I_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= I_SLC_BIT ; ret = ih264d_parse_islice ( ps_dec , u2_first_mb_in_slice ) ; if ( ps_dec -> i4_pic_type != B_SLICE && ps_dec -> i4_pic_type != P_SLICE ) ps_dec -> i4_pic_type = I_SLICE ; } else if ( u1_slice_type == P_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ret = ih264d_parse_pslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; if ( ps_dec -> i4_pic_type != B_SLICE ) ps_dec -> i4_pic_type = P_SLICE ; } else if ( u1_slice_type == B_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ret = ih264d_parse_bslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; ps_dec -> i4_pic_type = B_SLICE ; } else return ERROR_INV_SLC_TYPE_T ; if ( ps_dec -> u1_slice_header_done ) { <S2SV_StartBug> ps_dec -> u4_first_slice_in_pic = 0 ; <S2SV_EndBug> ps_dec -> u1_first_slice_in_stream = 0 ; } if ( ret != OK ) return ret ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ( ps_seq -> u2_max_mb_addr + 1 ) ) { ps_dec -> u1_pic_decode_done = 1 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ( ps_err -> u1_err_flag & REJECT_PB_PICS ) && ( ps_err -> u1_cur_pic_type == PIC_TYPE_I ) ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } PRINT_BIN_BIT_RATIO ( ps_dec ) return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> u1_first_slice_in_stream && <S2SV_ModEnd> ps_dec -> u4_first_slice_in_pic <S2SV_ModStart> ps_dec -> u4_first_slice_in_pic <S2SV_ModEnd> ) { pocstruct_t <S2SV_ModStart> ps_dec -> u4_first_slice_in_pic == 0 <S2SV_ModEnd> ) { i1_is_end_of_poc <S2SV_ModStart> ps_dec -> u4_first_slice_in_pic <S2SV_ModEnd> ) { if <S2SV_ModStart> } else { prev_slice_err = 2 <S2SV_ModEnd> ; num_mb_skipped = <S2SV_ModStart> ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } } else { if ( ( <S2SV_ModStart> u2_first_mb_in_slice << u1_mbaff ) > ps_dec -> u2_total_mbs_coded ) <S2SV_ModEnd> { prev_slice_err = <S2SV_ModStart> ; num_mb_skipped = <S2SV_ModEnd> ( u2_first_mb_in_slice << <S2SV_ModStart> << u1_mbaff ) - <S2SV_ModEnd> ps_dec -> u2_total_mbs_coded <S2SV_ModStart> ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } else if ( <S2SV_ModEnd> ( u2_first_mb_in_slice << <S2SV_ModStart> << u1_mbaff ) <S2SV_ModEnd> < ps_dec -> <S2SV_ModStart> ps_dec -> u4_first_slice_in_pic <S2SV_ModEnd> ) { ret <S2SV_ModStart> ps_dec -> u4_first_slice_in_pic <S2SV_ModEnd> ) { if <S2SV_ModStart> { ps_dec -> <S2SV_ModEnd> u1_first_slice_in_stream = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8374\n\n```\nCWE-200 int btrfs_truncate_inode_items ( struct btrfs_trans_handle * trans , struct btrfs_root * root , struct inode * inode , u64 new_size , u32 min_type ) { struct btrfs_path * path ; struct extent_buffer * leaf ; struct btrfs_file_extent_item * fi ; struct btrfs_key key ; struct btrfs_key found_key ; u64 extent_start = 0 ; u64 extent_num_bytes = 0 ; u64 extent_offset = 0 ; u64 item_end = 0 ; u64 last_size = new_size ; u32 found_type = ( u8 ) - 1 ; int found_extent ; int del_item ; int pending_del_nr = 0 ; int pending_del_slot = 0 ; int extent_type = - 1 ; int ret ; int err = 0 ; u64 ino = btrfs_ino ( inode ) ; u64 bytes_deleted = 0 ; bool be_nice = 0 ; bool should_throttle = 0 ; bool should_end = 0 ; BUG_ON ( new_size > 0 && min_type != BTRFS_EXTENT_DATA_KEY ) ; if ( ! btrfs_is_free_space_inode ( inode ) && test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) ) be_nice = 1 ; path = btrfs_alloc_path ( ) ; if ( ! path ) return - ENOMEM ; path -> reada = - 1 ; if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) || root == root -> fs_info -> tree_root ) btrfs_drop_extent_cache ( inode , ALIGN ( new_size , root -> sectorsize ) , ( u64 ) - 1 , 0 ) ; if ( min_type == 0 && root == BTRFS_I ( inode ) -> root ) btrfs_kill_delayed_inode_items ( inode ) ; key . objectid = ino ; key . offset = ( u64 ) - 1 ; key . type = ( u8 ) - 1 ; search_again : if ( be_nice && bytes_deleted > 32 * 1024 * 1024 ) { if ( btrfs_should_end_transaction ( trans , root ) ) { err = - EAGAIN ; goto error ; } } path -> leave_spinning = 1 ; ret = btrfs_search_slot ( trans , root , & key , path , - 1 , 1 ) ; if ( ret < 0 ) { err = ret ; goto out ; } if ( ret > 0 ) { if ( path -> slots [ 0 ] == 0 ) goto out ; path -> slots [ 0 ] -- ; } while ( 1 ) { fi = NULL ; leaf = path -> nodes [ 0 ] ; btrfs_item_key_to_cpu ( leaf , & found_key , path -> slots [ 0 ] ) ; found_type = found_key . type ; if ( found_key . objectid != ino ) break ; if ( found_type < min_type ) break ; item_end = found_key . offset ; if ( found_type == BTRFS_EXTENT_DATA_KEY ) { fi = btrfs_item_ptr ( leaf , path -> slots [ 0 ] , struct btrfs_file_extent_item ) ; extent_type = btrfs_file_extent_type ( leaf , fi ) ; if ( extent_type != BTRFS_FILE_EXTENT_INLINE ) { item_end += btrfs_file_extent_num_bytes ( leaf , fi ) ; } else if ( extent_type == BTRFS_FILE_EXTENT_INLINE ) { item_end += btrfs_file_extent_inline_len ( leaf , path -> slots [ 0 ] , fi ) ; } item_end -- ; } if ( found_type > min_type ) { del_item = 1 ; } else { if ( item_end < new_size ) break ; if ( found_key . offset >= new_size ) del_item = 1 ; else del_item = 0 ; } found_extent = 0 ; if ( found_type != BTRFS_EXTENT_DATA_KEY ) goto delete ; if ( del_item ) last_size = found_key . offset ; else last_size = new_size ; if ( extent_type != BTRFS_FILE_EXTENT_INLINE ) { u64 num_dec ; extent_start = btrfs_file_extent_disk_bytenr ( leaf , fi ) ; if ( ! del_item ) { u64 orig_num_bytes = btrfs_file_extent_num_bytes ( leaf , fi ) ; extent_num_bytes = ALIGN ( new_size - found_key . offset , root -> sectorsize ) ; btrfs_set_file_extent_num_bytes ( leaf , fi , extent_num_bytes ) ; num_dec = ( orig_num_bytes - extent_num_bytes ) ; if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) && extent_start != 0 ) inode_sub_bytes ( inode , num_dec ) ; btrfs_mark_buffer_dirty ( leaf ) ; } else { extent_num_bytes = btrfs_file_extent_disk_num_bytes ( leaf , fi ) ; extent_offset = found_key . offset - btrfs_file_extent_offset ( leaf , fi ) ; num_dec = btrfs_file_extent_num_bytes ( leaf , fi ) ; if ( extent_start != 0 ) { found_extent = 1 ; if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) ) inode_sub_bytes ( inode , num_dec ) ; } } } else if ( extent_type == BTRFS_FILE_EXTENT_INLINE ) { if ( ! del_item && <S2SV_StartBug> btrfs_file_extent_compression ( leaf , fi ) == 0 && <S2SV_EndBug> btrfs_file_extent_encryption ( leaf , fi ) == 0 && btrfs_file_extent_other_encoding ( leaf , fi ) == 0 ) { u32 size = new_size - found_key . offset ; <S2SV_StartBug> if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) ) <S2SV_EndBug> inode_sub_bytes ( inode , item_end + 1 - <S2SV_StartBug> new_size ) ; <S2SV_EndBug> btrfs_set_file_extent_ram_bytes ( leaf , fi , size ) ; size = btrfs_file_extent_calc_inline_size ( size ) ; btrfs_truncate_item ( root , path , size , 1 ) ; } else if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) ) { inode_sub_bytes ( inode , item_end + 1 - found_key . offset ) ; } } delete : if ( del_item ) { if ( ! pending_del_nr ) { pending_del_slot = path -> slots [ 0 ] ; pending_del_nr = 1 ; } else if ( pending_del_nr && path -> slots [ 0 ] + 1 == pending_del_slot ) { pending_del_nr ++ ; pending_del_slot = path -> slots [ 0 ] ; } else { BUG ( ) ; } } else { break ; } should_throttle = 0 ; if ( found_extent && ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) || root == root -> fs_info -> tree_root ) ) { btrfs_set_path_blocking ( path ) ; bytes_deleted += extent_num_bytes ; ret = btrfs_free_extent ( trans , root , extent_start , extent_num_bytes , 0 , btrfs_header_owner ( leaf ) , ino , extent_offset , 0 ) ; BUG_ON ( ret ) ; if ( btrfs_should_throttle_delayed_refs ( trans , root ) ) btrfs_async_run_delayed_refs ( root , trans -> delayed_ref_updates * 2 , 0 ) ; if ( be_nice ) { if ( truncate_space_check ( trans , root , extent_num_bytes ) ) { should_end = 1 ; } if ( btrfs_should_throttle_delayed_refs ( trans , root ) ) { should_throttle = 1 ; } } } if ( found_type == BTRFS_INODE_ITEM_KEY ) break ; if ( path -> slots [ 0 ] == 0 || path -> slots [ 0 ] != pending_del_slot || should_throttle || should_end ) { if ( pending_del_nr ) { ret = btrfs_del_items ( trans , root , path , pending_del_slot , pending_del_nr ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto error ; } pending_del_nr = 0 ; } btrfs_release_path ( path ) ; if ( should_throttle ) { unsigned long updates = trans -> delayed_ref_updates ; if ( updates ) { trans -> delayed_ref_updates = 0 ; ret = btrfs_run_delayed_refs ( trans , root , updates * 2 ) ; if ( ret && ! err ) err = ret ; } } if ( should_end ) { err = - EAGAIN ; goto error ; } goto search_again ; } else { path -> slots [ 0 ] -- ; } } out : if ( pending_del_nr ) { ret = btrfs_del_items ( trans , root , path , pending_del_slot , pending_del_nr ) ; if ( ret ) btrfs_abort_transaction ( trans , root , ret ) ; } error : if ( root -> root_key . objectid != BTRFS_TREE_LOG_OBJECTID ) btrfs_ordered_update_i_size ( inode , last_size , NULL ) ; btrfs_free_path ( path ) ; if ( be_nice && bytes_deleted > 32 * 1024 * 1024 ) { unsigned long updates = trans -> delayed_ref_updates ; if ( updates ) { trans -> delayed_ref_updates = 0 ; ret = btrfs_run_delayed_refs ( trans , root , updates * 2 ) ; if ( ret && ! err ) err = ret ; } } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! del_item && btrfs_file_extent_encryption ( leaf , fi ) == 0 && btrfs_file_extent_other_encoding ( leaf , fi ) == 0 ) { if ( <S2SV_ModStart> , fi ) != BTRFS_COMPRESS_NONE && pending_del_nr ) { err = btrfs_del_items ( trans , root , path , pending_del_slot , pending_del_nr ) ; if ( err ) { btrfs_abort_transaction ( trans , root , err ) ; goto error ; } pending_del_nr = 0 ; } err = truncate_inline_extent ( inode , path , & found_key , item_end , new_size ) ; if ( err ) { btrfs_abort_transaction ( trans , root , err ) ; goto error ; } } else <S2SV_ModEnd> if ( test_bit <S2SV_ModStart> state ) ) { <S2SV_ModStart> 1 - new_size <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7865\n\n```\nCWE-787 void avcodec_align_dimensions2 ( AVCodecContext * s , int * width , int * height , int linesize_align [ AV_NUM_DATA_POINTERS ] ) { int i ; int w_align = 1 ; int h_align = 1 ; AVPixFmtDescriptor const * desc = av_pix_fmt_desc_get ( s -> pix_fmt ) ; if ( desc ) { w_align = 1 << desc -> log2_chroma_w ; h_align = 1 << desc -> log2_chroma_h ; } switch ( s -> pix_fmt ) { case AV_PIX_FMT_YUV420P : case AV_PIX_FMT_YUYV422 : case AV_PIX_FMT_YVYU422 : case AV_PIX_FMT_UYVY422 : case AV_PIX_FMT_YUV422P : case AV_PIX_FMT_YUV440P : case AV_PIX_FMT_YUV444P : case AV_PIX_FMT_GBRP : case AV_PIX_FMT_GBRAP : case AV_PIX_FMT_GRAY8 : case AV_PIX_FMT_GRAY16BE : case AV_PIX_FMT_GRAY16LE : case AV_PIX_FMT_YUVJ420P : case AV_PIX_FMT_YUVJ422P : case AV_PIX_FMT_YUVJ440P : case AV_PIX_FMT_YUVJ444P : case AV_PIX_FMT_YUVA420P : case AV_PIX_FMT_YUVA422P : case AV_PIX_FMT_YUVA444P : case AV_PIX_FMT_YUV420P9LE : case AV_PIX_FMT_YUV420P9BE : case AV_PIX_FMT_YUV420P10LE : case AV_PIX_FMT_YUV420P10BE : case AV_PIX_FMT_YUV420P12LE : case AV_PIX_FMT_YUV420P12BE : case AV_PIX_FMT_YUV420P14LE : case AV_PIX_FMT_YUV420P14BE : case AV_PIX_FMT_YUV420P16LE : case AV_PIX_FMT_YUV420P16BE : case AV_PIX_FMT_YUVA420P9LE : case AV_PIX_FMT_YUVA420P9BE : case AV_PIX_FMT_YUVA420P10LE : case AV_PIX_FMT_YUVA420P10BE : case AV_PIX_FMT_YUVA420P16LE : case AV_PIX_FMT_YUVA420P16BE : case AV_PIX_FMT_YUV422P9LE : case AV_PIX_FMT_YUV422P9BE : case AV_PIX_FMT_YUV422P10LE : case AV_PIX_FMT_YUV422P10BE : case AV_PIX_FMT_YUV422P12LE : case AV_PIX_FMT_YUV422P12BE : case AV_PIX_FMT_YUV422P14LE : case AV_PIX_FMT_YUV422P14BE : case AV_PIX_FMT_YUV422P16LE : case AV_PIX_FMT_YUV422P16BE : case AV_PIX_FMT_YUVA422P9LE : case AV_PIX_FMT_YUVA422P9BE : case AV_PIX_FMT_YUVA422P10LE : case AV_PIX_FMT_YUVA422P10BE : case AV_PIX_FMT_YUVA422P16LE : case AV_PIX_FMT_YUVA422P16BE : case AV_PIX_FMT_YUV440P10LE : case AV_PIX_FMT_YUV440P10BE : case AV_PIX_FMT_YUV440P12LE : case AV_PIX_FMT_YUV440P12BE : case AV_PIX_FMT_YUV444P9LE : case AV_PIX_FMT_YUV444P9BE : case AV_PIX_FMT_YUV444P10LE : case AV_PIX_FMT_YUV444P10BE : case AV_PIX_FMT_YUV444P12LE : case AV_PIX_FMT_YUV444P12BE : case AV_PIX_FMT_YUV444P14LE : case AV_PIX_FMT_YUV444P14BE : case AV_PIX_FMT_YUV444P16LE : case AV_PIX_FMT_YUV444P16BE : case AV_PIX_FMT_YUVA444P9LE : case AV_PIX_FMT_YUVA444P9BE : case AV_PIX_FMT_YUVA444P10LE : case AV_PIX_FMT_YUVA444P10BE : case AV_PIX_FMT_YUVA444P16LE : case AV_PIX_FMT_YUVA444P16BE : case AV_PIX_FMT_GBRP9LE : case AV_PIX_FMT_GBRP9BE : case AV_PIX_FMT_GBRP10LE : case AV_PIX_FMT_GBRP10BE : case AV_PIX_FMT_GBRP12LE : case AV_PIX_FMT_GBRP12BE : case AV_PIX_FMT_GBRP14LE : case AV_PIX_FMT_GBRP14BE : case AV_PIX_FMT_GBRP16LE : case AV_PIX_FMT_GBRP16BE : case AV_PIX_FMT_GBRAP12LE : case AV_PIX_FMT_GBRAP12BE : case AV_PIX_FMT_GBRAP16LE : case AV_PIX_FMT_GBRAP16BE : w_align = 16 ; h_align = 16 * 2 ; break ; case AV_PIX_FMT_YUV411P : case AV_PIX_FMT_YUVJ411P : case AV_PIX_FMT_UYYVYY411 : w_align = 32 ; h_align = 16 * 2 ; break ; case AV_PIX_FMT_YUV410P : if ( s -> codec_id == AV_CODEC_ID_SVQ1 ) { w_align = 64 ; h_align = 64 ; } break ; case AV_PIX_FMT_RGB555 : if ( s -> codec_id == AV_CODEC_ID_RPZA ) { w_align = 4 ; h_align = 4 ; } <S2SV_StartBug> break ; <S2SV_EndBug> case AV_PIX_FMT_PAL8 : case AV_PIX_FMT_BGR8 : case AV_PIX_FMT_RGB8 : if ( s -> codec_id == AV_CODEC_ID_SMC || s -> codec_id == AV_CODEC_ID_CINEPAK ) { w_align = 4 ; h_align = 4 ; } <S2SV_StartBug> if ( s -> codec_id == AV_CODEC_ID_JV ) { <S2SV_EndBug> w_align = 8 ; h_align = 8 ; } break ; case AV_PIX_FMT_BGR24 : if ( ( s -> codec_id == AV_CODEC_ID_MSZH ) || ( s -> codec_id == AV_CODEC_ID_ZLIB ) ) { w_align = 4 ; h_align = 4 ; } break ; case AV_PIX_FMT_RGB24 : if ( s -> codec_id == AV_CODEC_ID_CINEPAK ) { w_align = 4 ; h_align = 4 ; } break ; default : break ; } if ( s -> codec_id == AV_CODEC_ID_IFF_ILBM ) { w_align = FFMAX ( w_align , 8 ) ; } * width = FFALIGN ( * width , w_align ) ; * height = FFALIGN ( * height , h_align ) ; if ( s -> codec_id == AV_CODEC_ID_H264 || s -> lowres ) { * height += 2 ; * width = FFMAX ( * width , 32 ) ; } for ( i = 0 ; i < 4 ; i ++ ) linesize_align [ i ] = STRIDE_ALIGN ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 4 ; } if ( s -> codec_id == AV_CODEC_ID_INTERPLAY_VIDEO ) { w_align = 8 ; h_align = 8 ; } <S2SV_ModStart> codec_id == AV_CODEC_ID_JV || s -> codec_id == AV_CODEC_ID_INTERPLAY_VIDEO\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-704(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18386\n\n```\nCWE-704 static int n_tty_ioctl ( struct tty_struct * tty , struct file * file , unsigned int cmd , unsigned long arg ) { struct n_tty_data * ldata = tty -> disc_data ; int retval ; switch ( cmd ) { case TIOCOUTQ : return put_user ( tty_chars_in_buffer ( tty ) , ( int __user * ) arg ) ; case TIOCINQ : down_write ( & tty -> termios_rwsem ) ; <S2SV_StartBug> if ( L_ICANON ( tty ) ) <S2SV_EndBug> retval = inq_canon ( ldata ) ; else retval = read_cnt ( ldata ) ; up_write ( & tty -> termios_rwsem ) ; return put_user ( retval , ( unsigned int __user * ) arg ) ; default : return n_tty_ioctl_helper ( tty , file , cmd , arg ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( tty ) && ! L_EXTPROC ( tty )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7446\n\n```\nCWE-000 static int unix_dgram_sendmsg ( struct socket * sock , struct msghdr * msg , size_t len ) { struct sock * sk = sock -> sk ; struct net * net = sock_net ( sk ) ; struct unix_sock * u = unix_sk ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_un * , sunaddr , msg -> msg_name ) ; struct sock * other = NULL ; int namelen = 0 ; int err ; unsigned int hash ; struct sk_buff * skb ; long timeo ; struct scm_cookie scm ; int max_level ; int data_len = 0 ; <S2SV_StartBug> wait_for_unix_gc ( ) ; <S2SV_EndBug> err = scm_send ( sock , msg , & scm , false ) ; if ( err < 0 ) return err ; err = - EOPNOTSUPP ; if ( msg -> msg_flags & MSG_OOB ) goto out ; if ( msg -> msg_namelen ) { err = unix_mkname ( sunaddr , msg -> msg_namelen , & hash ) ; if ( err < 0 ) goto out ; namelen = err ; } else { sunaddr = NULL ; err = - ENOTCONN ; other = unix_peer_get ( sk ) ; if ( ! other ) goto out ; } if ( test_bit ( SOCK_PASSCRED , & sock -> flags ) && ! u -> addr && ( err = unix_autobind ( sock ) ) != 0 ) goto out ; err = - EMSGSIZE ; if ( len > sk -> sk_sndbuf - 32 ) goto out ; if ( len > SKB_MAX_ALLOC ) { data_len = min_t ( size_t , len - SKB_MAX_ALLOC , MAX_SKB_FRAGS * PAGE_SIZE ) ; data_len = PAGE_ALIGN ( data_len ) ; BUILD_BUG_ON ( SKB_MAX_ALLOC < PAGE_SIZE ) ; } skb = sock_alloc_send_pskb ( sk , len - data_len , data_len , msg -> msg_flags & MSG_DONTWAIT , & err , PAGE_ALLOC_COSTLY_ORDER ) ; if ( skb == NULL ) goto out ; err = unix_scm_to_skb ( & scm , skb , true ) ; if ( err < 0 ) goto out_free ; max_level = err + 1 ; skb_put ( skb , len - data_len ) ; skb -> data_len = data_len ; skb -> len = len ; err = skb_copy_datagram_from_iter ( skb , 0 , & msg -> msg_iter , len ) ; if ( err ) goto out_free ; timeo = sock_sndtimeo ( sk , msg -> msg_flags & MSG_DONTWAIT ) ; restart : if ( ! other ) { err = - ECONNRESET ; if ( sunaddr == NULL ) goto out_free ; other = unix_find_other ( net , sunaddr , namelen , sk -> sk_type , hash , & err ) ; if ( other == NULL ) goto out_free ; } if ( sk_filter ( other , skb ) < 0 ) { err = len ; goto out_free ; } <S2SV_StartBug> unix_state_lock ( other ) ; <S2SV_EndBug> err = - EPERM ; if ( ! unix_may_send ( sk , other ) ) goto out_unlock ; <S2SV_StartBug> if ( sock_flag ( other , SOCK_DEAD ) ) { <S2SV_EndBug> unix_state_unlock ( other ) ; sock_put ( other ) ; <S2SV_StartBug> err = 0 ; <S2SV_EndBug> <S2SV_StartBug> unix_state_lock ( sk ) ; <S2SV_EndBug> if ( unix_peer ( sk ) == other ) { <S2SV_StartBug> unix_peer ( sk ) = NULL ; <S2SV_EndBug> unix_state_unlock ( sk ) ; unix_dgram_disconnected ( sk , other ) ; sock_put ( other ) ; err = - ECONNREFUSED ; } else { unix_state_unlock ( sk ) ; } other = NULL ; if ( err ) goto out_free ; goto restart ; } err = - EPIPE ; if ( other -> sk_shutdown & RCV_SHUTDOWN ) goto out_unlock ; if ( sk -> sk_type != SOCK_SEQPACKET ) { err = security_unix_may_send ( sk -> sk_socket , other -> sk_socket ) ; if ( err ) goto out_unlock ; } <S2SV_StartBug> if ( unix_peer ( other ) != sk && unix_recvq_full ( other ) ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! timeo ) { <S2SV_EndBug> err = - EAGAIN ; <S2SV_StartBug> goto out_unlock ; <S2SV_EndBug> } <S2SV_StartBug> timeo = unix_wait_for_peer ( other , timeo ) ; <S2SV_EndBug> err = sock_intr_errno ( timeo ) ; if ( signal_pending ( current ) ) goto out_free ; goto restart ; } if ( sock_flag ( other , SOCK_RCVTSTAMP ) ) __net_timestamp ( skb ) ; maybe_add_creds ( skb , sock , other ) ; skb_queue_tail ( & other -> sk_receive_queue , skb ) ; if ( max_level > unix_sk ( other ) -> recursion_level ) unix_sk ( other ) -> recursion_level = max_level ; unix_state_unlock ( other ) ; other -> sk_data_ready ( other ) ; sock_put ( other ) ; scm_destroy ( & scm ) ; return len ; out_unlock : <S2SV_StartBug> unix_state_unlock ( other ) ; <S2SV_EndBug> out_free : kfree_skb ( skb ) ; out : if ( other ) sock_put ( other ) ; scm_destroy ( & scm ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; int sk_locked ; <S2SV_ModStart> out_free ; } sk_locked = 0 ; <S2SV_ModStart> other ) ; restart_locked : <S2SV_ModStart> ; if ( unlikely ( <S2SV_ModStart> SOCK_DEAD ) ) ) <S2SV_ModStart> other ) ; if ( ! sk_locked ) unix_state_lock ( sk ) ; <S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( unix_peer <S2SV_ModStart> ) = NULL ; unix_dgram_peer_wake_disconnect_wakeup ( sk , other ) <S2SV_ModStart> } if ( unlikely ( <S2SV_ModStart> other ) ) ) { if ( timeo ) { timeo = unix_wait_for_peer ( other , timeo ) ; err = sock_intr_errno ( timeo ) ; if ( signal_pending ( current ) ) goto out_free ; goto restart ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! sk_locked ) { unix_state_unlock ( other ) ; unix_state_double_lock ( sk , other ) ; } if ( unix_peer ( sk ) != other || unix_dgram_peer_wake_me ( sk , other ) <S2SV_ModEnd> ) { err <S2SV_ModStart> - EAGAIN ; sk_locked = 1 ; <S2SV_ModStart> out_unlock ; } if ( ! sk_locked ) { sk_locked = 1 ; goto restart_locked ; } } if ( unlikely ( sk_locked ) ) unix_state_unlock ( sk ) ; <S2SV_ModEnd> if ( sock_flag <S2SV_ModStart> ; out_unlock : if ( sk_locked ) unix_state_unlock ( sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18174\n\n```\nCWE-415 static int amd_gpio_remove ( struct platform_device * pdev ) { struct amd_gpio * gpio_dev ; gpio_dev = platform_get_drvdata ( pdev ) ; gpiochip_remove ( & gpio_dev -> gc ) ; <S2SV_StartBug> pinctrl_unregister ( gpio_dev -> pctrl ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gc ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8957\n\n```\nCWE-119 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , length ; ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; } switch ( sun_info . maptype ) { case RMT_NONE : { if ( sun_info . depth < 24 ) { if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( sun_info . depth >= 8 ) && ( ( number_pixels * ( ( sun_info . depth + 7 ) / 8 ) ) > sun_info . length ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_StartBug> sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) sun_info . length , <S2SV_EndBug> <S2SV_StartBug> sizeof ( * sun_data ) ) ; <S2SV_EndBug> if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; sun_pixels = sun_data ; bytes_per_line = 0 ; if ( sun_info . type == RT_ENCODED ) { size_t height ; <S2SV_StartBug> height = sun_info . height ; <S2SV_EndBug> bytes_per_line = sun_info . width * sun_info . depth ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * height ) ; sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; } p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { if ( bytes_per_line == 0 ) bytes_per_line = image -> columns ; length = image -> rows * ( image -> columns + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; <S2SV_ModStart> ( size_t ) MagickMax ( <S2SV_ModStart> . length , bytes_per_line * sun_info . width ) , <S2SV_ModStart> sun_info . height <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum txid_current_snapshot ( PG_FUNCTION_ARGS ) { TxidSnapshot * snap ; uint32 nxip , i , size ; TxidEpoch state ; Snapshot cur ; cur = GetActiveSnapshot ( ) ; if ( cur == NULL ) elog ( ERROR , \"no<S2SV_blank>active<S2SV_blank>snapshot<S2SV_blank>set\" ) ; <S2SV_StartBug> load_xid_epoch ( & state ) ; <S2SV_EndBug> nxip = cur -> xcnt ; size = TXID_SNAPSHOT_SIZE ( nxip ) ; snap = palloc ( size ) ; SET_VARSIZE ( snap , size ) ; snap -> xmin = convert_xid ( cur -> xmin , & state ) ; snap -> xmax = convert_xid ( cur -> xmax , & state ) ; snap -> nxip = nxip ; for ( i = 0 ; i < nxip ; i ++ ) snap -> xip [ i ] = convert_xid ( cur -> xip [ i ] , & state ) ; sort_snapshot ( snap ) ; PG_RETURN_POINTER ( snap ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( & state ) ; StaticAssertStmt ( MAX_BACKENDS * 2 <= TXID_SNAPSHOT_MAX_NXIP , \"possible<S2SV_blank>overflow<S2SV_blank>in<S2SV_blank>txid_current_snapshot()\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int release_vp9_frame_buffer ( void * cb_priv , <S2SV_EndBug> vpx_codec_frame_buffer_t * fb ) { struct ExternalFrameBuffer * const ext_fb = ( struct ExternalFrameBuffer * ) fb -> priv ; ( void ) cb_priv ; ext_fb -> in_use = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_cost_tokens ( int * costs , const vp9_prob * probs , vp9_tree tree ) { <S2SV_EndBug> cost ( costs , tree , probs , 0 , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> costs , const vpx_prob <S2SV_ModEnd> * probs , <S2SV_ModStart> * probs , vpx_tree <S2SV_ModEnd> tree ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3690\n\n```\nCWE-400 static void vmx_set_constant_host_state ( struct vcpu_vmx * vmx ) { u32 low32 , high32 ; unsigned long tmpl ; struct desc_ptr dt ; <S2SV_StartBug> vmcs_writel ( HOST_CR0 , read_cr0 ( ) & ~ X86_CR0_TS ) ; <S2SV_EndBug> <S2SV_StartBug> vmcs_writel ( HOST_CR4 , read_cr4 ( ) ) ; <S2SV_EndBug> vmcs_writel ( HOST_CR3 , read_cr3 ( ) ) ; vmcs_write16 ( HOST_CS_SELECTOR , __KERNEL_CS ) ; # ifdef CONFIG_X86_64 vmcs_write16 ( HOST_DS_SELECTOR , 0 ) ; vmcs_write16 ( HOST_ES_SELECTOR , 0 ) ; # else vmcs_write16 ( HOST_DS_SELECTOR , __KERNEL_DS ) ; vmcs_write16 ( HOST_ES_SELECTOR , __KERNEL_DS ) ; # endif vmcs_write16 ( HOST_SS_SELECTOR , __KERNEL_DS ) ; vmcs_write16 ( HOST_TR_SELECTOR , GDT_ENTRY_TSS * 8 ) ; native_store_idt ( & dt ) ; vmcs_writel ( HOST_IDTR_BASE , dt . address ) ; vmx -> host_idt_base = dt . address ; vmcs_writel ( HOST_RIP , vmx_return ) ; rdmsr ( MSR_IA32_SYSENTER_CS , low32 , high32 ) ; vmcs_write32 ( HOST_IA32_SYSENTER_CS , low32 ) ; rdmsrl ( MSR_IA32_SYSENTER_EIP , tmpl ) ; vmcs_writel ( HOST_IA32_SYSENTER_EIP , tmpl ) ; if ( vmcs_config . vmexit_ctrl & VM_EXIT_LOAD_IA32_PAT ) { rdmsr ( MSR_IA32_CR_PAT , low32 , high32 ) ; vmcs_write64 ( HOST_IA32_PAT , low32 | ( ( u64 ) high32 << 32 ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> desc_ptr dt ; unsigned long cr4 ; <S2SV_ModStart> ; vmcs_writel ( HOST_CR3 , read_cr3 ( ) ) ; cr4 = read_cr4 ( ) ; vmcs_writel ( HOST_CR4 , cr4 ) ; vmx -> host_state . vmcs_host_cr4 = cr4 <S2SV_ModEnd> ; vmcs_write16 (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17712\n\n```\nCWE-362 static int raw_sendmsg ( struct sock * sk , struct msghdr * msg , size_t len ) { struct inet_sock * inet = inet_sk ( sk ) ; struct net * net = sock_net ( sk ) ; struct ipcm_cookie ipc ; struct rtable * rt = NULL ; struct flowi4 fl4 ; int free = 0 ; __be32 daddr ; __be32 saddr ; u8 tos ; int err ; struct ip_options_data opt_copy ; struct raw_frag_vec rfv ; <S2SV_StartBug> err = - EMSGSIZE ; <S2SV_EndBug> if ( len > 0xFFFF ) <S2SV_StartBug> goto out ; <S2SV_EndBug> err = - EOPNOTSUPP ; if ( msg -> msg_flags & MSG_OOB ) goto out ; if ( msg -> msg_namelen ) { DECLARE_SOCKADDR ( struct sockaddr_in * , usin , msg -> msg_name ) ; err = - EINVAL ; if ( msg -> msg_namelen < sizeof ( * usin ) ) goto out ; if ( usin -> sin_family != AF_INET ) { pr_info_once ( \"%s:<S2SV_blank>%s<S2SV_blank>forgot<S2SV_blank>to<S2SV_blank>set<S2SV_blank>AF_INET.<S2SV_blank>Fix<S2SV_blank>it!\\\\n\" , __func__ , current -> comm ) ; err = - EAFNOSUPPORT ; if ( usin -> sin_family ) goto out ; } daddr = usin -> sin_addr . s_addr ; } else { err = - EDESTADDRREQ ; if ( sk -> sk_state != TCP_ESTABLISHED ) goto out ; daddr = inet -> inet_daddr ; } ipc . sockc . tsflags = sk -> sk_tsflags ; ipc . addr = inet -> inet_saddr ; ipc . opt = NULL ; ipc . tx_flags = 0 ; ipc . ttl = 0 ; ipc . tos = - 1 ; ipc . oif = sk -> sk_bound_dev_if ; if ( msg -> msg_controllen ) { err = ip_cmsg_send ( sk , msg , & ipc , false ) ; if ( unlikely ( err ) ) { kfree ( ipc . opt ) ; goto out ; } if ( ipc . opt ) free = 1 ; } saddr = ipc . addr ; ipc . addr = daddr ; if ( ! ipc . opt ) { struct ip_options_rcu * inet_opt ; rcu_read_lock ( ) ; inet_opt = rcu_dereference ( inet -> inet_opt ) ; if ( inet_opt ) { memcpy ( & opt_copy , inet_opt , sizeof ( * inet_opt ) + inet_opt -> opt . optlen ) ; ipc . opt = & opt_copy . opt ; } rcu_read_unlock ( ) ; } if ( ipc . opt ) { err = - EINVAL ; <S2SV_StartBug> if ( inet -> hdrincl ) <S2SV_EndBug> goto done ; if ( ipc . opt -> opt . srr ) { if ( ! daddr ) goto done ; daddr = ipc . opt -> opt . faddr ; } } tos = get_rtconn_flags ( & ipc , sk ) ; if ( msg -> msg_flags & MSG_DONTROUTE ) tos |= RTO_ONLINK ; if ( ipv4_is_multicast ( daddr ) ) { if ( ! ipc . oif ) ipc . oif = inet -> mc_index ; if ( ! saddr ) saddr = inet -> mc_addr ; } else if ( ! ipc . oif ) ipc . oif = inet -> uc_index ; flowi4_init_output ( & fl4 , ipc . oif , sk -> sk_mark , tos , RT_SCOPE_UNIVERSE , <S2SV_StartBug> inet -> hdrincl ? IPPROTO_RAW : sk -> sk_protocol , <S2SV_EndBug> inet_sk_flowi_flags ( sk ) | <S2SV_StartBug> ( inet -> hdrincl ? FLOWI_FLAG_KNOWN_NH : 0 ) , <S2SV_EndBug> daddr , saddr , 0 , 0 , sk -> sk_uid ) ; <S2SV_StartBug> if ( ! inet -> hdrincl ) { <S2SV_EndBug> rfv . msg = msg ; rfv . hlen = 0 ; err = raw_probe_proto_opt ( & rfv , & fl4 ) ; if ( err ) goto done ; } security_sk_classify_flow ( sk , flowi4_to_flowi ( & fl4 ) ) ; rt = ip_route_output_flow ( net , & fl4 , sk ) ; if ( IS_ERR ( rt ) ) { err = PTR_ERR ( rt ) ; rt = NULL ; goto done ; } err = - EACCES ; if ( rt -> rt_flags & RTCF_BROADCAST && ! sock_flag ( sk , SOCK_BROADCAST ) ) goto done ; if ( msg -> msg_flags & MSG_CONFIRM ) goto do_confirm ; back_from_confirm : <S2SV_StartBug> if ( inet -> hdrincl ) <S2SV_EndBug> err = raw_send_hdrinc ( sk , & fl4 , msg , len , & rt , msg -> msg_flags , & ipc . sockc ) ; else { sock_tx_timestamp ( sk , ipc . sockc . tsflags , & ipc . tx_flags ) ; if ( ! ipc . addr ) ipc . addr = fl4 . daddr ; lock_sock ( sk ) ; err = ip_append_data ( sk , & fl4 , raw_getfrag , & rfv , len , 0 , & ipc , & rt , msg -> msg_flags ) ; if ( err ) ip_flush_pending_frames ( sk ) ; else if ( ! ( msg -> msg_flags & MSG_MORE ) ) { err = ip_push_pending_frames ( sk , & fl4 ) ; if ( err == - ENOBUFS && ! inet -> recverr ) err = 0 ; } release_sock ( sk ) ; } done : if ( free ) kfree ( ipc . opt ) ; ip_rt_put ( rt ) ; out : if ( err < 0 ) return err ; return len ; do_confirm : if ( msg -> msg_flags & MSG_PROBE ) dst_confirm_neigh ( & rt -> dst , & fl4 . daddr ) ; if ( ! ( msg -> msg_flags & MSG_PROBE ) || len ) goto back_from_confirm ; err = 0 ; goto done ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> raw_frag_vec rfv ; int hdrincl ; <S2SV_ModStart> ) goto out ; hdrincl = inet -> hdrincl <S2SV_ModStart> ; if ( <S2SV_ModEnd> hdrincl ) goto <S2SV_ModStart> , RT_SCOPE_UNIVERSE , <S2SV_ModEnd> hdrincl ? IPPROTO_RAW <S2SV_ModStart> ) | ( <S2SV_ModEnd> hdrincl ? FLOWI_FLAG_KNOWN_NH <S2SV_ModStart> if ( ! <S2SV_ModEnd> hdrincl ) { <S2SV_ModStart> : if ( <S2SV_ModEnd> hdrincl ) err\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline signed short ReadPropertySignedShort ( const EndianType endian , const unsigned char * buffer ) { union { unsigned short unsigned_value ; signed short signed_value ; } quantum ; unsigned short value ; if ( endian == LSBEndian ) { <S2SV_StartBug> value = ( unsigned short ) ( ( buffer [ 1 ] << 8 ) | buffer [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; } <S2SV_StartBug> value = ( unsigned short ) ( ( ( ( unsigned char * ) buffer ) [ 0 ] << 8 ) | <S2SV_EndBug> <S2SV_StartBug> ( ( unsigned char * ) buffer ) [ 1 ] ) ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned short ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 8 ; value |= ( unsigned short ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; quantum . <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffff <S2SV_ModStart> value & 0xffff <S2SV_ModEnd> ; return ( <S2SV_ModStart> unsigned short ) buffer <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> ] << 8 ; value |= ( unsigned short ) buffer <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> [ 1 ] <S2SV_ModEnd> ; quantum . <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffff <S2SV_ModStart> value & 0xffff <S2SV_ModEnd> ; return (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20217\n\n```\nCWE-617 krb5_error_code kdc_process_s4u2self_req ( kdc_realm_t * kdc_active_realm , krb5_kdc_req * request , krb5_const_principal client_princ , krb5_const_principal header_srv_princ , krb5_boolean issuing_referral , const krb5_db_entry * server , krb5_keyblock * tgs_subkey , krb5_keyblock * tgs_session , krb5_timestamp kdc_time , krb5_pa_s4u_x509_user * * s4u_x509_user , krb5_db_entry * * princ_ptr , const char * * status ) { krb5_error_code code ; krb5_boolean is_local_tgt ; krb5_pa_data * pa_data ; int flags ; krb5_db_entry * princ ; * princ_ptr = NULL ; pa_data = krb5int_find_pa_data ( kdc_context , request -> padata , KRB5_PADATA_S4U_X509_USER ) ; if ( pa_data != NULL ) { code = kdc_process_s4u_x509_user ( kdc_context , request , pa_data , tgs_subkey , tgs_session , s4u_x509_user , status ) ; if ( code != 0 ) return code ; } else { pa_data = krb5int_find_pa_data ( kdc_context , request -> padata , KRB5_PADATA_FOR_USER ) ; if ( pa_data != NULL ) { code = kdc_process_for_user ( kdc_active_realm , pa_data , tgs_session , s4u_x509_user , status ) ; if ( code != 0 ) return code ; } else return 0 ; } flags = 0 ; switch ( krb5_princ_type ( kdc_context , request -> server ) ) { case KRB5_NT_SRV_HST : if ( krb5_princ_size ( kdc_context , request -> server ) == 2 ) flags |= KRB5_PRINCIPAL_COMPARE_IGNORE_REALM ; break ; case KRB5_NT_ENTERPRISE_PRINCIPAL : flags |= KRB5_PRINCIPAL_COMPARE_ENTERPRISE ; break ; default : break ; } if ( ! krb5_principal_compare_flags ( kdc_context , request -> server , client_princ , flags ) ) { * status = \"INVALID_S4U2SELF_REQUEST\" ; return KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; } if ( request -> kdc_options & AS_INVALID_OPTIONS ) { * status = \"INVALID<S2SV_blank>AS<S2SV_blank>OPTIONS\" ; return KRB5KDC_ERR_BADOPTION ; } is_local_tgt = ! is_cross_tgs_principal ( header_srv_princ ) ; if ( is_local_tgt && issuing_referral ) { * status = \"LOOKING_UP_SERVER\" ; return KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; } if ( is_local_principal ( kdc_active_realm , ( * s4u_x509_user ) -> user_id . user ) ) { krb5_db_entry no_server ; krb5_pa_data * * e_data = NULL ; if ( ! is_local_tgt && ! issuing_referral ) { * status = \"NOT_CROSS_REALM_REQUEST\" ; return KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; } code = krb5_db_get_principal ( kdc_context , ( * s4u_x509_user ) -> user_id . user , KRB5_KDB_FLAG_INCLUDE_PAC , & princ ) ; if ( code == KRB5_KDB_NOENTRY ) { * status = \"UNKNOWN_S4U2SELF_PRINCIPAL\" ; return KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; } else if ( code ) { * status = \"LOOKING_UP_S4U2SELF_PRINCIPAL\" ; return code ; } memset ( & no_server , 0 , sizeof ( no_server ) ) ; <S2SV_StartBug> code = validate_as_request ( kdc_active_realm , request , * princ , <S2SV_EndBug> no_server , kdc_time , status , & e_data ) ; if ( code ) { krb5_db_free_principal ( kdc_context , princ ) ; krb5_free_pa_data ( kdc_context , e_data ) ; return code ; } * princ_ptr = princ ; } else if ( is_local_tgt ) { * status = \"S4U2SELF_CLIENT_NOT_OURS\" ; return KRB5KDC_ERR_POLICY ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; princ -> pw_expiration = 0 ; clear ( princ -> attributes , KRB5_KDB_REQUIRES_PWCHANGE ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2007-6761\n\n```\nCWE-119 static void videobuf_vm_open ( struct vm_area_struct * vma ) { struct videobuf_mapping * map = vma -> vm_private_data ; <S2SV_StartBug> dprintk ( 2 , \"vm_open<S2SV_blank>%p<S2SV_blank>[count=%d,vma=%08lx-%08lx]\\\\n\" , map , <S2SV_EndBug> map -> count , vma -> vm_start , vma -> vm_end ) ; map -> count ++ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 2 , \"vm_open<S2SV_blank>%p<S2SV_blank>[count=%u,vma=%08lx-%08lx]\\\\n\" <S2SV_ModEnd> , map ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 static int su3000_i2c_transfer ( struct i2c_adapter * adap , struct i2c_msg msg [ ] , int num ) { struct dvb_usb_device * d = i2c_get_adapdata ( adap ) ; <S2SV_StartBug> u8 obuf [ 0x40 ] , ibuf [ 0x40 ] ; <S2SV_EndBug> if ( ! d ) return - ENODEV ; <S2SV_StartBug> if ( mutex_lock_interruptible ( & d -> i2c_mutex ) < 0 ) <S2SV_EndBug> return - EAGAIN ; <S2SV_StartBug> switch ( num ) { <S2SV_EndBug> case 1 : switch ( msg [ 0 ] . addr ) { case SU3000_STREAM_CTRL : <S2SV_StartBug> obuf [ 0 ] = msg [ 0 ] . buf [ 0 ] + 0x36 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 3 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 0 , 0 ) < 0 ) <S2SV_EndBug> err ( \"i2c<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; break ; case DW2102_RC_QUERY : <S2SV_StartBug> obuf [ 0 ] = 0x10 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 1 , ibuf , 2 , 0 ) < 0 ) <S2SV_EndBug> err ( \"i2c<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> msg [ 0 ] . buf [ 1 ] = ibuf [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> msg [ 0 ] . buf [ 0 ] = ibuf [ 1 ] ; <S2SV_EndBug> break ; default : <S2SV_StartBug> obuf [ 0 ] = 0x08 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = msg [ 0 ] . addr ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = msg [ 0 ] . len ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & obuf [ 3 ] , msg [ 0 ] . buf , msg [ 0 ] . len ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , msg [ 0 ] . len + 3 , <S2SV_EndBug> <S2SV_StartBug> ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"i2c<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; } break ; case 2 : <S2SV_StartBug> obuf [ 0 ] = 0x09 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = msg [ 0 ] . len ; <S2SV_EndBug> obuf [ 2 ] = msg [ 1 ] . len ; <S2SV_StartBug> obuf [ 3 ] = msg [ 0 ] . addr ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & obuf [ 4 ] , msg [ 0 ] . buf , msg [ 0 ] . len ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , msg [ 0 ] . len + 4 , <S2SV_EndBug> <S2SV_StartBug> ibuf , msg [ 1 ] . len + 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"i2c<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> memcpy ( msg [ 1 ] . buf , & ibuf [ 1 ] , msg [ 1 ] . len ) ; <S2SV_EndBug> break ; default : warn ( \"more<S2SV_blank>than<S2SV_blank>2<S2SV_blank>i2c<S2SV_blank>messages<S2SV_blank>at<S2SV_blank>a<S2SV_blank>time<S2SV_blank>is<S2SV_blank>not<S2SV_blank>handled<S2SV_blank>yet.\" ) ; break ; } <S2SV_StartBug> mutex_unlock ( & d -> i2c_mutex ) ; <S2SV_EndBug> return num ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> adap ) ; struct dw2102_state * state <S2SV_ModEnd> ; if ( <S2SV_ModStart> - ENODEV ; state = d -> priv ; <S2SV_ModStart> - EAGAIN ; if ( mutex_lock_interruptible ( & d -> data_mutex ) < 0 ) { mutex_unlock ( & d -> i2c_mutex ) ; return - EAGAIN ; } <S2SV_ModStart> case SU3000_STREAM_CTRL : state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> + 0x36 ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 3 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 0 , <S2SV_ModStart> case DW2102_RC_QUERY : state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> ( d , state -> data , 1 , state -> data <S2SV_ModEnd> , 2 , <S2SV_ModStart> 1 ] = state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> 0 ] = state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> ; default : state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0x08 ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> . addr ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> memcpy ( & state -> data <S2SV_ModEnd> [ 3 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , msg [ <S2SV_ModStart> + 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> case 2 : state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0x09 ; state -> data [ 1 ] = msg [ 0 ] . len ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> . len ; state -> data <S2SV_ModEnd> [ 3 ] <S2SV_ModStart> memcpy ( & state -> data <S2SV_ModEnd> [ 4 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , msg [ <S2SV_ModStart> + 4 , state -> data <S2SV_ModEnd> , msg [ <S2SV_ModStart> buf , & state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> & d -> data_mutex ) ; mutex_unlock ( & d ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35680\n\n```\nCWE-476 static void filter_session_io ( struct io * io , int evt , void * arg ) { struct filter_session * fs = arg ; char * line = NULL ; ssize_t len ; log_trace ( TRACE_IO , \"filter<S2SV_blank>session:<S2SV_blank>%p:<S2SV_blank>%s<S2SV_blank>%s\" , fs , io_strevent ( evt ) , io_strio ( io ) ) ; switch ( evt ) { case IO_DATAIN : nextline : line = io_getline ( fs -> io , & len ) ; if ( line == NULL ) return ; filter_data ( fs -> id , line ) ; goto nextline ; <S2SV_StartBug> case IO_DISCONNECTED : <S2SV_EndBug> io_free ( fs -> io ) ; fs -> io = NULL ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto nextline ; <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9949\n\n```\nCWE-787 grub_ssize_t grub_fshelp_read_file ( grub_disk_t disk , grub_fshelp_node_t node , void ( * read_hook ) ( grub_disk_addr_t sector , unsigned offset , unsigned length , void * closure ) , void * closure , int flags , grub_off_t pos , grub_size_t len , char * buf , grub_disk_addr_t ( * get_block ) ( grub_fshelp_node_t node , grub_disk_addr_t block ) , grub_off_t filesize , int log2blocksize ) { grub_disk_addr_t i , blockcnt ; int blocksize = 1 << ( log2blocksize + GRUB_DISK_SECTOR_BITS ) ; if ( pos + len > filesize ) len = filesize - pos ; <S2SV_StartBug> blockcnt = ( ( len + pos ) + blocksize - 1 ) >> <S2SV_EndBug> ( log2blocksize + GRUB_DISK_SECTOR_BITS ) ; for ( i = pos >> ( log2blocksize + GRUB_DISK_SECTOR_BITS ) ; i < blockcnt ; i ++ ) { grub_disk_addr_t blknr ; int blockoff = pos & ( blocksize - 1 ) ; int blockend = blocksize ; int skipfirst = 0 ; blknr = get_block ( node , i ) ; if ( grub_errno ) return - 1 ; blknr = blknr << log2blocksize ; if ( i == blockcnt - 1 ) { blockend = ( len + pos ) & ( blocksize - 1 ) ; if ( ! blockend ) blockend = blocksize ; } if ( i == ( pos >> ( log2blocksize + GRUB_DISK_SECTOR_BITS ) ) ) { skipfirst = blockoff ; blockend -= skipfirst ; } if ( blknr ) { disk -> read_hook = read_hook ; disk -> closure = closure ; grub_hack_lastoff = blknr * 512 ; grub_disk_read_ex ( disk , blknr , skipfirst , blockend , buf , flags ) ; disk -> read_hook = 0 ; if ( grub_errno ) return - 1 ; } else if ( buf ) grub_memset ( buf , 0 , blockend ) ; if ( buf ) buf += blocksize - skipfirst ; } return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - pos ; if ( len < 1 || len == 0xffffffff ) { return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4205\n\n```\nCWE-399 int unshare_userns ( unsigned long unshare_flags , struct cred * * new_cred ) { <S2SV_StartBug> struct cred * cred ; <S2SV_EndBug> if ( ! ( unshare_flags & CLONE_NEWUSER ) ) return 0 ; cred = prepare_creds ( ) ; <S2SV_StartBug> if ( ! cred ) <S2SV_EndBug> return - ENOMEM ; * new_cred = cred ; <S2SV_StartBug> return create_user_ns ( cred ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cred * cred ; int err = - ENOMEM <S2SV_ModStart> ; if ( cred ) { err = create_user_ns ( cred ) ; if ( err ) put_cred ( cred ) ; else <S2SV_ModEnd> * new_cred = <S2SV_ModStart> = cred ; } return err <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5283\n\n```\nCWE-119 static __init int sctp_init ( void ) { int i ; int status = - EINVAL ; unsigned long goal ; unsigned long limit ; int max_share ; int order ; sock_skb_cb_check_size ( sizeof ( struct sctp_ulpevent ) ) ; status = - ENOBUFS ; sctp_bucket_cachep = kmem_cache_create ( \"sctp_bind_bucket\" , sizeof ( struct sctp_bind_bucket ) , 0 , SLAB_HWCACHE_ALIGN , NULL ) ; if ( ! sctp_bucket_cachep ) goto out ; sctp_chunk_cachep = kmem_cache_create ( \"sctp_chunk\" , sizeof ( struct sctp_chunk ) , 0 , SLAB_HWCACHE_ALIGN , NULL ) ; if ( ! sctp_chunk_cachep ) goto err_chunk_cachep ; status = percpu_counter_init ( & sctp_sockets_allocated , 0 , GFP_KERNEL ) ; if ( status ) goto err_percpu_counter_init ; sctp_max_instreams = SCTP_DEFAULT_INSTREAMS ; sctp_max_outstreams = SCTP_DEFAULT_OUTSTREAMS ; idr_init ( & sctp_assocs_id ) ; limit = nr_free_buffer_pages ( ) / 8 ; limit = max ( limit , 128UL ) ; sysctl_sctp_mem [ 0 ] = limit / 4 * 3 ; sysctl_sctp_mem [ 1 ] = limit ; sysctl_sctp_mem [ 2 ] = sysctl_sctp_mem [ 0 ] * 2 ; limit = ( sysctl_sctp_mem [ 1 ] ) << ( PAGE_SHIFT - 7 ) ; max_share = min ( 4UL * 1024 * 1024 , limit ) ; sysctl_sctp_rmem [ 0 ] = SK_MEM_QUANTUM ; sysctl_sctp_rmem [ 1 ] = 1500 * SKB_TRUESIZE ( 1 ) ; sysctl_sctp_rmem [ 2 ] = max ( sysctl_sctp_rmem [ 1 ] , max_share ) ; sysctl_sctp_wmem [ 0 ] = SK_MEM_QUANTUM ; sysctl_sctp_wmem [ 1 ] = 16 * 1024 ; sysctl_sctp_wmem [ 2 ] = max ( 64 * 1024 , max_share ) ; if ( totalram_pages >= ( 128 * 1024 ) ) goal = totalram_pages >> ( 22 - PAGE_SHIFT ) ; else goal = totalram_pages >> ( 24 - PAGE_SHIFT ) ; for ( order = 0 ; ( 1UL << order ) < goal ; order ++ ) ; do { sctp_assoc_hashsize = ( 1UL << order ) * PAGE_SIZE / sizeof ( struct sctp_hashbucket ) ; if ( ( sctp_assoc_hashsize > ( 64 * 1024 ) ) && order > 0 ) continue ; sctp_assoc_hashtable = ( struct sctp_hashbucket * ) __get_free_pages ( GFP_ATOMIC | __GFP_NOWARN , order ) ; } while ( ! sctp_assoc_hashtable && -- order > 0 ) ; if ( ! sctp_assoc_hashtable ) { pr_err ( \"Failed<S2SV_blank>association<S2SV_blank>hash<S2SV_blank>alloc\\\\n\" ) ; status = - ENOMEM ; goto err_ahash_alloc ; } for ( i = 0 ; i < sctp_assoc_hashsize ; i ++ ) { rwlock_init ( & sctp_assoc_hashtable [ i ] . lock ) ; INIT_HLIST_HEAD ( & sctp_assoc_hashtable [ i ] . chain ) ; } sctp_ep_hashsize = 64 ; sctp_ep_hashtable = kmalloc ( 64 * sizeof ( struct sctp_hashbucket ) , GFP_KERNEL ) ; if ( ! sctp_ep_hashtable ) { pr_err ( \"Failed<S2SV_blank>endpoint_hash<S2SV_blank>alloc\\\\n\" ) ; status = - ENOMEM ; goto err_ehash_alloc ; } for ( i = 0 ; i < sctp_ep_hashsize ; i ++ ) { rwlock_init ( & sctp_ep_hashtable [ i ] . lock ) ; INIT_HLIST_HEAD ( & sctp_ep_hashtable [ i ] . chain ) ; } do { sctp_port_hashsize = ( 1UL << order ) * PAGE_SIZE / sizeof ( struct sctp_bind_hashbucket ) ; if ( ( sctp_port_hashsize > ( 64 * 1024 ) ) && order > 0 ) continue ; sctp_port_hashtable = ( struct sctp_bind_hashbucket * ) __get_free_pages ( GFP_ATOMIC | __GFP_NOWARN , order ) ; } while ( ! sctp_port_hashtable && -- order > 0 ) ; if ( ! sctp_port_hashtable ) { pr_err ( \"Failed<S2SV_blank>bind<S2SV_blank>hash<S2SV_blank>alloc\\\\n\" ) ; status = - ENOMEM ; goto err_bhash_alloc ; } for ( i = 0 ; i < sctp_port_hashsize ; i ++ ) { spin_lock_init ( & sctp_port_hashtable [ i ] . lock ) ; INIT_HLIST_HEAD ( & sctp_port_hashtable [ i ] . chain ) ; } pr_info ( \"Hash<S2SV_blank>tables<S2SV_blank>configured<S2SV_blank>(established<S2SV_blank>%d<S2SV_blank>bind<S2SV_blank>%d)\\\\n\" , sctp_assoc_hashsize , sctp_port_hashsize ) ; sctp_sysctl_register ( ) ; INIT_LIST_HEAD ( & sctp_address_families ) ; sctp_v4_pf_init ( ) ; sctp_v6_pf_init ( ) ; <S2SV_StartBug> status = sctp_v4_protosw_init ( ) ; <S2SV_EndBug> if ( status ) goto err_protosw_init ; status = sctp_v6_protosw_init ( ) ; if ( status ) goto err_v6_protosw_init ; <S2SV_StartBug> status = register_pernet_subsys ( & sctp_net_ops ) ; <S2SV_EndBug> if ( status ) goto err_register_pernet_subsys ; status = sctp_v4_add_protocol ( ) ; if ( status ) goto err_add_protocol ; status = sctp_v6_add_protocol ( ) ; if ( status ) goto err_v6_add_protocol ; out : return status ; err_v6_add_protocol : sctp_v4_del_protocol ( ) ; err_add_protocol : <S2SV_StartBug> unregister_pernet_subsys ( & sctp_net_ops ) ; <S2SV_EndBug> err_register_pernet_subsys : sctp_v6_protosw_exit ( ) ; err_v6_protosw_init : sctp_v4_protosw_exit ( ) ; <S2SV_StartBug> err_protosw_init : <S2SV_EndBug> sctp_v4_pf_exit ( ) ; sctp_v6_pf_exit ( ) ; sctp_sysctl_unregister ( ) ; free_pages ( ( unsigned long ) sctp_port_hashtable , get_order ( sctp_port_hashsize * sizeof ( struct sctp_bind_hashbucket ) ) ) ; err_bhash_alloc : kfree ( sctp_ep_hashtable ) ; err_ehash_alloc : free_pages ( ( unsigned long ) sctp_assoc_hashtable , get_order ( sctp_assoc_hashsize * sizeof ( struct sctp_hashbucket ) ) ) ; err_ahash_alloc : percpu_counter_destroy ( & sctp_sockets_allocated ) ; err_percpu_counter_init : kmem_cache_destroy ( sctp_chunk_cachep ) ; err_chunk_cachep : kmem_cache_destroy ( sctp_bucket_cachep ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; status = register_pernet_subsys ( & sctp_defaults_ops ) ; if ( status ) goto err_register_defaults ; status = <S2SV_ModStart> register_pernet_subsys ( & sctp_ctrlsock_ops ) ; if ( status ) goto err_register_ctrlsock <S2SV_ModEnd> ; status = <S2SV_ModStart> unregister_pernet_subsys ( & sctp_ctrlsock_ops ) ; err_register_ctrlsock <S2SV_ModEnd> : sctp_v6_protosw_exit ( <S2SV_ModStart> ) ; err_protosw_init : unregister_pernet_subsys ( & sctp_defaults_ops ) ; err_register_defaults\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19824\n\n```\nCWE-416 static int usb_audio_probe ( struct usb_interface * intf , const struct usb_device_id * usb_id ) { struct usb_device * dev = interface_to_usbdev ( intf ) ; const struct snd_usb_audio_quirk * quirk = ( const struct snd_usb_audio_quirk * ) usb_id -> driver_info ; struct snd_usb_audio * chip ; int i , err ; struct usb_host_interface * alts ; int ifnum ; u32 id ; alts = & intf -> altsetting [ 0 ] ; ifnum = get_iface_desc ( alts ) -> bInterfaceNumber ; id = USB_ID ( le16_to_cpu ( dev -> descriptor . idVendor ) , le16_to_cpu ( dev -> descriptor . idProduct ) ) ; if ( get_alias_id ( dev , & id ) ) quirk = get_alias_quirk ( dev , id ) ; if ( quirk && quirk -> ifnum >= 0 && ifnum != quirk -> ifnum ) return - ENXIO ; err = snd_usb_apply_boot_quirk ( dev , intf , quirk , id ) ; if ( err < 0 ) return err ; chip = NULL ; mutex_lock ( & register_mutex ) ; for ( i = 0 ; i < SNDRV_CARDS ; i ++ ) { if ( usb_chip [ i ] && usb_chip [ i ] -> dev == dev ) { if ( atomic_read ( & usb_chip [ i ] -> shutdown ) ) { dev_err ( & dev -> dev , \"USB<S2SV_blank>device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>the<S2SV_blank>shutdown<S2SV_blank>state,<S2SV_blank>cannot<S2SV_blank>create<S2SV_blank>a<S2SV_blank>card<S2SV_blank>instance\\\\n\" ) ; err = - EIO ; goto __error ; } chip = usb_chip [ i ] ; atomic_inc ( & chip -> active ) ; break ; } } if ( ! chip ) { for ( i = 0 ; i < SNDRV_CARDS ; i ++ ) if ( ! usb_chip [ i ] && ( vid [ i ] == - 1 || vid [ i ] == USB_ID_VENDOR ( id ) ) && ( pid [ i ] == - 1 || pid [ i ] == USB_ID_PRODUCT ( id ) ) ) { if ( enable [ i ] ) { err = snd_usb_audio_create ( intf , dev , i , quirk , id , & chip ) ; if ( err < 0 ) goto __error ; chip -> pm_intf = intf ; break ; } else if ( vid [ i ] != - 1 || pid [ i ] != - 1 ) { dev_info ( & dev -> dev , \"device<S2SV_blank>(%04x:%04x)<S2SV_blank>is<S2SV_blank>disabled\\\\n\" , USB_ID_VENDOR ( id ) , USB_ID_PRODUCT ( id ) ) ; err = - ENOENT ; goto __error ; } } if ( ! chip ) { dev_err ( & dev -> dev , \"no<S2SV_blank>available<S2SV_blank>usb<S2SV_blank>audio<S2SV_blank>device\\\\n\" ) ; err = - ENODEV ; goto __error ; } } dev_set_drvdata ( & dev -> dev , chip ) ; if ( ! chip -> ctrl_intf ) chip -> ctrl_intf = alts ; chip -> txfr_quirk = 0 ; err = 1 ; if ( quirk && quirk -> ifnum != QUIRK_NO_INTERFACE ) { err = snd_usb_create_quirk ( chip , intf , & usb_audio_driver , quirk ) ; if ( err < 0 ) goto __error ; } if ( err > 0 ) { err = snd_usb_create_streams ( chip , ifnum ) ; if ( err < 0 ) goto __error ; err = snd_usb_create_mixer ( chip , ifnum , ignore_ctl_error ) ; if ( err < 0 ) goto __error ; } err = snd_card_register ( chip -> card ) ; if ( err < 0 ) goto __error ; usb_chip [ chip -> index ] = chip ; chip -> num_interfaces ++ ; usb_set_intfdata ( intf , chip ) ; atomic_dec ( & chip -> active ) ; mutex_unlock ( & register_mutex ) ; return 0 ; __error : if ( chip ) { <S2SV_StartBug> if ( ! chip -> num_interfaces ) <S2SV_EndBug> snd_card_free ( chip -> card ) ; <S2SV_StartBug> atomic_dec ( & chip -> active ) ; <S2SV_EndBug> } mutex_unlock ( & register_mutex ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> chip ) { atomic_dec ( & chip -> active ) ; <S2SV_ModStart> card ) ; <S2SV_ModEnd> } mutex_unlock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 TSQuery QTN2QT ( QTNode * in ) { TSQuery out ; int len ; int sumlen = 0 , nnode = 0 ; QTN2QTState state ; <S2SV_StartBug> cntsize ( in , & sumlen , & nnode ) ; <S2SV_EndBug> len = COMPUTESIZE ( nnode , sumlen ) ; out = ( TSQuery ) palloc0 ( len ) ; SET_VARSIZE ( out , len ) ; out -> size = nnode ; state . curitem = GETQUERY ( out ) ; state . operand = state . curoperand = GETOPERAND ( out ) ; fillQT ( & state , in ) ; return out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , & nnode ) ; if ( TSQUERY_TOO_BIG ( nnode , sumlen ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"tsquery<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11339\n\n```\nCWE-125 static int decode_studio_vop_header ( Mpeg4DecContext * ctx , GetBitContext * gb ) { MpegEncContext * s = & ctx -> m ; if ( get_bits_left ( gb ) <= 32 ) return 0 ; s -> partitioned_frame = 0 ; <S2SV_StartBug> s -> decode_mb = mpeg4_decode_studio_mb ; <S2SV_EndBug> decode_smpte_tc ( ctx , gb ) ; skip_bits ( gb , 10 ) ; skip_bits ( gb , 2 ) ; s -> pict_type = get_bits ( gb , 2 ) + AV_PICTURE_TYPE_I ; if ( get_bits1 ( gb ) ) { skip_bits1 ( gb ) ; skip_bits1 ( gb ) ; s -> progressive_frame = get_bits1 ( gb ) ^ 1 ; } if ( s -> pict_type == AV_PICTURE_TYPE_I ) { if ( get_bits1 ( gb ) ) reset_studio_dc_predictors ( s ) ; } if ( ctx -> shape != BIN_ONLY_SHAPE ) { s -> alternate_scan = get_bits1 ( gb ) ; s -> frame_pred_frame_dct = get_bits1 ( gb ) ; s -> dct_precision = get_bits ( gb , 2 ) ; s -> intra_dc_precision = get_bits ( gb , 2 ) ; s -> q_scale_type = get_bits1 ( gb ) ; } if ( s -> alternate_scan ) { ff_init_scantable ( s -> idsp . idct_permutation , & s -> inter_scantable , ff_alternate_vertical_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_scantable , ff_alternate_vertical_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_h_scantable , ff_alternate_vertical_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_v_scantable , ff_alternate_vertical_scan ) ; } else { ff_init_scantable ( s -> idsp . idct_permutation , & s -> inter_scantable , ff_zigzag_direct ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_scantable , ff_zigzag_direct ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_h_scantable , ff_alternate_horizontal_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_v_scantable , ff_alternate_vertical_scan ) ; } mpeg4_load_default_matrices ( s ) ; next_start_code_studio ( gb ) ; extension_and_user_data ( s , gb , 4 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; s -> interlaced_dct = 0 ; s ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int uhid_event ( btif_hh_device_t * p_dev ) { struct uhid_event ev ; ssize_t ret ; memset ( & ev , 0 , sizeof ( ev ) ) ; if ( ! p_dev ) { APPL_TRACE_ERROR ( \"%s:<S2SV_blank>Device<S2SV_blank>not<S2SV_blank>found\" , __FUNCTION__ ) return - 1 ; } <S2SV_StartBug> ret = read ( p_dev -> fd , & ev , sizeof ( ev ) ) ; <S2SV_EndBug> if ( ret == 0 ) { APPL_TRACE_ERROR ( \"%s:<S2SV_blank>Read<S2SV_blank>HUP<S2SV_blank>on<S2SV_blank>uhid-cdev<S2SV_blank>%s\" , __FUNCTION__ , strerror ( errno ) ) ; return - EFAULT ; } else if ( ret < 0 ) { APPL_TRACE_ERROR ( \"%s:<S2SV_blank>Cannot<S2SV_blank>read<S2SV_blank>uhid-cdev:<S2SV_blank>%s\" , __FUNCTION__ , strerror ( errno ) ) ; return - errno ; } else if ( ( ev . type == UHID_OUTPUT ) || ( ev . type == UHID_OUTPUT_EV ) ) { if ( ret < ( ssize_t ) sizeof ( ev ) ) { APPL_TRACE_ERROR ( \"%s:<S2SV_blank>Invalid<S2SV_blank>size<S2SV_blank>read<S2SV_blank>from<S2SV_blank>uhid-dev:<S2SV_blank>%ld<S2SV_blank>!=<S2SV_blank>%lu\" , __FUNCTION__ , ret , sizeof ( ev . type ) ) ; return - EFAULT ; } } switch ( ev . type ) { case UHID_START : APPL_TRACE_DEBUG ( \"UHID_START<S2SV_blank>from<S2SV_blank>uhid-dev\\\\n\" ) ; p_dev -> ready_for_data = TRUE ; break ; case UHID_STOP : APPL_TRACE_DEBUG ( \"UHID_STOP<S2SV_blank>from<S2SV_blank>uhid-dev\\\\n\" ) ; p_dev -> ready_for_data = FALSE ; break ; case UHID_OPEN : APPL_TRACE_DEBUG ( \"UHID_OPEN<S2SV_blank>from<S2SV_blank>uhid-dev\\\\n\" ) ; break ; case UHID_CLOSE : APPL_TRACE_DEBUG ( \"UHID_CLOSE<S2SV_blank>from<S2SV_blank>uhid-dev\\\\n\" ) ; p_dev -> ready_for_data = FALSE ; break ; case UHID_OUTPUT : if ( ret < ( ssize_t ) ( sizeof ( ev . type ) + sizeof ( ev . u . output ) ) ) { APPL_TRACE_ERROR ( \"%s:<S2SV_blank>Invalid<S2SV_blank>size<S2SV_blank>read<S2SV_blank>from<S2SV_blank>uhid-dev:<S2SV_blank>%zd<S2SV_blank><<S2SV_blank>%zu\" , __FUNCTION__ , ret , sizeof ( ev . type ) + sizeof ( ev . u . output ) ) ; return - EFAULT ; } APPL_TRACE_DEBUG ( \"UHID_OUTPUT:<S2SV_blank>Report<S2SV_blank>type<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>report_size<S2SV_blank>=<S2SV_blank>%d\" , ev . u . output . rtype , ev . u . output . size ) ; if ( ev . u . output . rtype == UHID_FEATURE_REPORT ) btif_hh_setreport ( p_dev , BTHH_FEATURE_REPORT , ev . u . output . size , ev . u . output . data ) ; else if ( ev . u . output . rtype == UHID_OUTPUT_REPORT ) btif_hh_setreport ( p_dev , BTHH_OUTPUT_REPORT , ev . u . output . size , ev . u . output . data ) ; else btif_hh_setreport ( p_dev , BTHH_INPUT_REPORT , ev . u . output . size , ev . u . output . data ) ; break ; case UHID_OUTPUT_EV : APPL_TRACE_DEBUG ( \"UHID_OUTPUT_EV<S2SV_blank>from<S2SV_blank>uhid-dev\\\\n\" ) ; break ; case UHID_FEATURE : APPL_TRACE_DEBUG ( \"UHID_FEATURE<S2SV_blank>from<S2SV_blank>uhid-dev\\\\n\" ) ; break ; case UHID_FEATURE_ANSWER : APPL_TRACE_DEBUG ( \"UHID_FEATURE_ANSWER<S2SV_blank>from<S2SV_blank>uhid-dev\\\\n\" ) ; break ; default : APPL_TRACE_DEBUG ( \"Invalid<S2SV_blank>event<S2SV_blank>from<S2SV_blank>uhid-dev:<S2SV_blank>%u\\\\n\" , ev . type ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } ret = TEMP_FAILURE_RETRY ( <S2SV_ModStart> sizeof ( ev )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static int nfs4_proc_create ( struct inode * dir , struct dentry * dentry , struct iattr * sattr , int flags , struct nameidata * nd ) { struct path path = { . mnt = nd -> path . mnt , . dentry = dentry , } ; struct nfs4_state * state ; struct rpc_cred * cred ; <S2SV_StartBug> int status = 0 ; <S2SV_EndBug> cred = rpc_lookup_cred ( ) ; if ( IS_ERR ( cred ) ) { status = PTR_ERR ( cred ) ; goto out ; } <S2SV_StartBug> state = nfs4_do_open ( dir , & path , flags , sattr , cred ) ; <S2SV_EndBug> d_drop ( dentry ) ; if ( IS_ERR ( state ) ) { status = PTR_ERR ( state ) ; goto out_putcred ; } d_add ( dentry , igrab ( state -> inode ) ) ; nfs_set_verifier ( dentry , nfs_save_change_attribute ( dir ) ) ; if ( flags & O_EXCL ) { struct nfs_fattr fattr ; status = nfs4_do_setattr ( state -> inode , cred , & fattr , sattr , state ) ; if ( status == 0 ) nfs_setattr_update_inode ( state -> inode , sattr ) ; nfs_post_op_update_inode ( state -> inode , & fattr ) ; } if ( status == 0 && ( nd -> flags & LOOKUP_OPEN ) != 0 ) <S2SV_StartBug> status = nfs4_intent_set_file ( nd , & path , state ) ; <S2SV_EndBug> else <S2SV_StartBug> nfs4_close_sync ( & path , state , flags ) ; <S2SV_EndBug> out_putcred : put_rpccred ( cred ) ; out : return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cred ; fmode_t fmode = flags & ( FMODE_READ | FMODE_WRITE ) ; <S2SV_ModStart> , & path , fmode <S2SV_ModStart> path , state , fmode <S2SV_ModStart> , state , fmode <S2SV_ModEnd> ) ; out_putcred\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7472\n\n```\nCWE-404 int install_thread_keyring_to_cred ( struct cred * new ) { <S2SV_StartBug> struct key * keyring ; <S2SV_EndBug> keyring = keyring_alloc ( \"_tid\" , new -> uid , new -> gid , new , KEY_POS_ALL | KEY_USR_VIEW , KEY_ALLOC_QUOTA_OVERRUN , NULL , NULL ) ; if ( IS_ERR ( keyring ) ) return PTR_ERR ( keyring ) ; new -> thread_keyring = keyring ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> key * keyring ; if ( new -> thread_keyring ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11098\n\n```\nCWE-125 BOOL glyph_cache_put ( rdpGlyphCache * glyphCache , UINT32 id , UINT32 index , rdpGlyph * glyph ) { rdpGlyph * prevGlyph ; if ( id > 9 ) { WLog_ERR ( TAG , \"invalid<S2SV_blank>glyph<S2SV_blank>cache<S2SV_blank>id:<S2SV_blank>%\" PRIu32 \"\" , id ) ; return FALSE ; } <S2SV_StartBug> if ( index > glyphCache -> glyphCache [ id ] . number ) <S2SV_EndBug> { WLog_ERR ( TAG , \"invalid<S2SV_blank>glyph<S2SV_blank>cache<S2SV_blank>index:<S2SV_blank>%\" PRIu32 \"<S2SV_blank>in<S2SV_blank>cache<S2SV_blank>id:<S2SV_blank>%\" PRIu32 \"\" , index , id ) ; return FALSE ; } WLog_Print ( glyphCache -> log , WLOG_DEBUG , \"GlyphCachePut:<S2SV_blank>id:<S2SV_blank>%\" PRIu32 \"<S2SV_blank>index:<S2SV_blank>%\" PRIu32 \"\" , id , index ) ; prevGlyph = glyphCache -> glyphCache [ id ] . entries [ index ] ; if ( prevGlyph ) prevGlyph -> Free ( glyphCache -> context , prevGlyph ) ; glyphCache -> glyphCache [ id ] . entries [ index ] = glyph ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( index >= <S2SV_ModEnd> glyphCache -> glyphCache\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9114\n\n```\nCWE-77 static int parse_token ( char * * name , char * * value , char * * cp ) { char * end ; if ( ! name || ! value || ! cp ) return - BLKID_ERR_PARAM ; if ( ! ( * value = strchr ( * cp , '=' ) ) ) return 0 ; * * value = '\\\\0' ; * name = strip_line ( * cp ) ; * value = skip_over_blank ( * value + 1 ) ; if ( * * value == \\'\"\\' ) { <S2SV_StartBug> end = strchr ( * value + 1 , \\'\"\\' ) ; <S2SV_EndBug> if ( ! end ) { DBG ( READ , ul_debug ( \"unbalanced<S2SV_blank>quotes<S2SV_blank>at:<S2SV_blank>%s\" , * value ) ) ; * cp = * value ; return - BLKID_ERR_CACHE ; } ( * value ) ++ ; * end = '\\\\0' ; <S2SV_StartBug> end ++ ; <S2SV_EndBug> } else { end = skip_over_word ( * value ) ; if ( * end ) { * end = '\\\\0' ; end ++ ; } } * cp = end ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \\'\"\\' ) { char * p = end = <S2SV_ModEnd> * value + <S2SV_ModStart> value + 1 ; while ( * p ) { if ( * p == '\\\\\\\\' ) { p ++ ; * end = * p ; } else { * end = * p ; if ( * p == \\'\"\\' ) break ; } p ++ ; end ++ ; } if ( * end != \\'\"\\' <S2SV_ModEnd> ) { DBG <S2SV_ModStart> '\\\\0' ; end = ++ p <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 static void common_hrtimer_rearm ( struct k_itimer * timr ) { struct hrtimer * timer = & timr -> it . real . timer ; if ( ! timr -> it_interval ) return ; <S2SV_StartBug> timr -> it_overrun += ( unsigned int ) hrtimer_forward ( timer , <S2SV_EndBug> timer -> base -> get_time ( ) , timr -> it_interval ) ; hrtimer_restart ( timer ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> it_overrun += <S2SV_ModEnd> hrtimer_forward ( timer\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _epoll_read ( oe_fd_t * epoll_ , void * buf , size_t count ) { ssize_t ret = - 1 ; epoll_t * file = _cast_epoll ( epoll_ ) ; oe_errno = 0 ; <S2SV_StartBug> if ( ! file ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( oe_syscall_read_ocall ( & ret , file -> host_fd , buf , count ) != OE_OK ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> done : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! file || count > OE_SSIZE_MAX <S2SV_ModStart> OE_EINVAL ) ; if ( ret > ( ssize_t ) count ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 static jas_image_cmpt_t * jas_image_cmpt_create ( int_fast32_t tlx , int_fast32_t tly , int_fast32_t hstep , int_fast32_t vstep , int_fast32_t width , int_fast32_t height , uint_fast16_t depth , bool sgnd , uint_fast32_t inmem ) { jas_image_cmpt_t * cmpt ; size_t size ; cmpt = 0 ; if ( width < 0 || height < 0 || hstep <= 0 || vstep <= 0 ) { goto error ; } if ( ! jas_safe_intfast32_add ( tlx , width , 0 ) || ! jas_safe_intfast32_add ( tly , height , 0 ) ) { goto error ; } if ( ! ( cmpt = jas_malloc ( sizeof ( jas_image_cmpt_t ) ) ) ) { goto error ; } cmpt -> type_ = JAS_IMAGE_CT_UNKNOWN ; cmpt -> tlx_ = tlx ; cmpt -> tly_ = tly ; cmpt -> hstep_ = hstep ; cmpt -> vstep_ = vstep ; cmpt -> width_ = width ; cmpt -> height_ = height ; cmpt -> prec_ = depth ; cmpt -> sgnd_ = sgnd ; cmpt -> stream_ = 0 ; cmpt -> cps_ = ( depth + 7 ) / 8 ; if ( ! jas_safe_size_mul ( cmpt -> width_ , cmpt -> height_ , & size ) || ! jas_safe_size_mul ( size , cmpt -> cps_ , & size ) ) { goto error ; } <S2SV_StartBug> cmpt -> stream_ = ( inmem ) ? jas_stream_memopen ( 0 , size ) : <S2SV_EndBug> jas_stream_tmpfile ( ) ; if ( ! cmpt -> stream_ ) { goto error ; } if ( jas_stream_seek ( cmpt -> stream_ , size - 1 , SEEK_SET ) < 0 || jas_stream_putc ( cmpt -> stream_ , 0 ) == EOF || jas_stream_seek ( cmpt -> stream_ , 0 , SEEK_SET ) < 0 ) { goto error ; } return cmpt ; error : if ( cmpt ) { jas_image_cmpt_destroy ( cmpt ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inmem ) ? jas_stream_memopen2 <S2SV_ModEnd> ( 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15888\n\n```\nCWE-416 void luaV_execute ( lua_State * L , CallInfo * ci ) { LClosure * cl ; TValue * k ; StkId base ; const Instruction * pc ; int trap ; # if LUA_USE_JUMPTABLE # include \"ljumptab.h\" # endif tailcall : trap = L -> hookmask ; cl = clLvalue ( s2v ( ci -> func ) ) ; k = cl -> p -> k ; pc = ci -> u . l . savedpc ; if ( trap ) { if ( cl -> p -> is_vararg ) trap = 0 ; else if ( pc == cl -> p -> code ) luaD_hookcall ( L , ci ) ; ci -> u . l . trap = 1 ; } base = ci -> func + 1 ; for ( ; ; ) { Instruction i ; StkId ra ; vmfetch ( ) ; lua_assert ( base == ci -> func + 1 ) ; lua_assert ( base <= L -> top && L -> top < L -> stack + L -> stacksize ) ; lua_assert ( isIT ( i ) || ( cast_void ( L -> top = base ) , 1 ) ) ; vmdispatch ( GET_OPCODE ( i ) ) { vmcase ( OP_MOVE ) { setobjs2s ( L , ra , RB ( i ) ) ; vmbreak ; } vmcase ( OP_LOADI ) { lua_Integer b = GETARG_sBx ( i ) ; setivalue ( s2v ( ra ) , b ) ; vmbreak ; } vmcase ( OP_LOADF ) { int b = GETARG_sBx ( i ) ; setfltvalue ( s2v ( ra ) , cast_num ( b ) ) ; vmbreak ; } vmcase ( OP_LOADK ) { TValue * rb = k + GETARG_Bx ( i ) ; setobj2s ( L , ra , rb ) ; vmbreak ; } vmcase ( OP_LOADKX ) { TValue * rb ; rb = k + GETARG_Ax ( * pc ) ; pc ++ ; setobj2s ( L , ra , rb ) ; vmbreak ; } vmcase ( OP_LOADFALSE ) { setbfvalue ( s2v ( ra ) ) ; vmbreak ; } vmcase ( OP_LFALSESKIP ) { setbfvalue ( s2v ( ra ) ) ; pc ++ ; vmbreak ; } vmcase ( OP_LOADTRUE ) { setbtvalue ( s2v ( ra ) ) ; vmbreak ; } vmcase ( OP_LOADNIL ) { int b = GETARG_B ( i ) ; do { setnilvalue ( s2v ( ra ++ ) ) ; } while ( b -- ) ; vmbreak ; } vmcase ( OP_GETUPVAL ) { int b = GETARG_B ( i ) ; setobj2s ( L , ra , cl -> upvals [ b ] -> v ) ; vmbreak ; } vmcase ( OP_SETUPVAL ) { UpVal * uv = cl -> upvals [ GETARG_B ( i ) ] ; setobj ( L , uv -> v , s2v ( ra ) ) ; luaC_barrier ( L , uv , s2v ( ra ) ) ; vmbreak ; } vmcase ( OP_GETTABUP ) { const TValue * slot ; TValue * upval = cl -> upvals [ GETARG_B ( i ) ] -> v ; TValue * rc = KC ( i ) ; TString * key = tsvalue ( rc ) ; if ( luaV_fastget ( L , upval , key , slot , luaH_getshortstr ) ) { setobj2s ( L , ra , slot ) ; } else Protect ( luaV_finishget ( L , upval , rc , ra , slot ) ) ; vmbreak ; } vmcase ( OP_GETTABLE ) { const TValue * slot ; TValue * rb = vRB ( i ) ; TValue * rc = vRC ( i ) ; lua_Unsigned n ; if ( ttisinteger ( rc ) ? ( cast_void ( n = ivalue ( rc ) ) , luaV_fastgeti ( L , rb , n , slot ) ) : luaV_fastget ( L , rb , rc , slot , luaH_get ) ) { setobj2s ( L , ra , slot ) ; } else Protect ( luaV_finishget ( L , rb , rc , ra , slot ) ) ; vmbreak ; } vmcase ( OP_GETI ) { const TValue * slot ; TValue * rb = vRB ( i ) ; int c = GETARG_C ( i ) ; if ( luaV_fastgeti ( L , rb , c , slot ) ) { setobj2s ( L , ra , slot ) ; } else { TValue key ; setivalue ( & key , c ) ; Protect ( luaV_finishget ( L , rb , & key , ra , slot ) ) ; } vmbreak ; } vmcase ( OP_GETFIELD ) { const TValue * slot ; TValue * rb = vRB ( i ) ; TValue * rc = KC ( i ) ; TString * key = tsvalue ( rc ) ; if ( luaV_fastget ( L , rb , key , slot , luaH_getshortstr ) ) { setobj2s ( L , ra , slot ) ; } else Protect ( luaV_finishget ( L , rb , rc , ra , slot ) ) ; vmbreak ; } vmcase ( OP_SETTABUP ) { const TValue * slot ; TValue * upval = cl -> upvals [ GETARG_A ( i ) ] -> v ; TValue * rb = KB ( i ) ; TValue * rc = RKC ( i ) ; TString * key = tsvalue ( rb ) ; if ( luaV_fastget ( L , upval , key , slot , luaH_getshortstr ) ) { luaV_finishfastset ( L , upval , slot , rc ) ; } else Protect ( luaV_finishset ( L , upval , rb , rc , slot ) ) ; vmbreak ; } vmcase ( OP_SETTABLE ) { const TValue * slot ; TValue * rb = vRB ( i ) ; TValue * rc = RKC ( i ) ; lua_Unsigned n ; if ( ttisinteger ( rb ) ? ( cast_void ( n = ivalue ( rb ) ) , luaV_fastgeti ( L , s2v ( ra ) , n , slot ) ) : luaV_fastget ( L , s2v ( ra ) , rb , slot , luaH_get ) ) { luaV_finishfastset ( L , s2v ( ra ) , slot , rc ) ; } else Protect ( luaV_finishset ( L , s2v ( ra ) , rb , rc , slot ) ) ; vmbreak ; } vmcase ( OP_SETI ) { const TValue * slot ; int c = GETARG_B ( i ) ; TValue * rc = RKC ( i ) ; if ( luaV_fastgeti ( L , s2v ( ra ) , c , slot ) ) { luaV_finishfastset ( L , s2v ( ra ) , slot , rc ) ; } else { TValue key ; setivalue ( & key , c ) ; Protect ( luaV_finishset ( L , s2v ( ra ) , & key , rc , slot ) ) ; } vmbreak ; } vmcase ( OP_SETFIELD ) { const TValue * slot ; TValue * rb = KB ( i ) ; TValue * rc = RKC ( i ) ; TString * key = tsvalue ( rb ) ; if ( luaV_fastget ( L , s2v ( ra ) , key , slot , luaH_getshortstr ) ) { luaV_finishfastset ( L , s2v ( ra ) , slot , rc ) ; } else Protect ( luaV_finishset ( L , s2v ( ra ) , rb , rc , slot ) ) ; vmbreak ; } vmcase ( OP_NEWTABLE ) { int b = GETARG_B ( i ) ; int c = GETARG_C ( i ) ; Table * t ; if ( b > 0 ) b = 1 << ( b - 1 ) ; lua_assert ( ( ! TESTARG_k ( i ) ) == ( GETARG_Ax ( * pc ) == 0 ) ) ; if ( TESTARG_k ( i ) ) c += GETARG_Ax ( * pc ) * ( MAXARG_C + 1 ) ; pc ++ ; L -> top = ra + 1 ; t = luaH_new ( L ) ; sethvalue2s ( L , ra , t ) ; if ( b != 0 || c != 0 ) luaH_resize ( L , t , c , b ) ; checkGC ( L , ra + 1 ) ; vmbreak ; } vmcase ( OP_SELF ) { const TValue * slot ; TValue * rb = vRB ( i ) ; TValue * rc = RKC ( i ) ; TString * key = tsvalue ( rc ) ; setobj2s ( L , ra + 1 , rb ) ; if ( luaV_fastget ( L , rb , key , slot , luaH_getstr ) ) { setobj2s ( L , ra , slot ) ; } else Protect ( luaV_finishget ( L , rb , rc , ra , slot ) ) ; vmbreak ; } vmcase ( OP_ADDI ) { op_arithI ( L , l_addi , luai_numadd ) ; vmbreak ; } vmcase ( OP_ADDK ) { op_arithK ( L , l_addi , luai_numadd ) ; vmbreak ; } vmcase ( OP_SUBK ) { op_arithK ( L , l_subi , luai_numsub ) ; vmbreak ; } vmcase ( OP_MULK ) { op_arithK ( L , l_muli , luai_nummul ) ; vmbreak ; } vmcase ( OP_MODK ) { op_arithK ( L , luaV_mod , luaV_modf ) ; vmbreak ; } vmcase ( OP_POWK ) { op_arithfK ( L , luai_numpow ) ; vmbreak ; } vmcase ( OP_DIVK ) { op_arithfK ( L , luai_numdiv ) ; vmbreak ; } vmcase ( OP_IDIVK ) { op_arithK ( L , luaV_idiv , luai_numidiv ) ; vmbreak ; } vmcase ( OP_BANDK ) { op_bitwiseK ( L , l_band ) ; vmbreak ; } vmcase ( OP_BORK ) { op_bitwiseK ( L , l_bor ) ; vmbreak ; } vmcase ( OP_BXORK ) { op_bitwiseK ( L , l_bxor ) ; vmbreak ; } vmcase ( OP_SHRI ) { TValue * rb = vRB ( i ) ; int ic = GETARG_sC ( i ) ; lua_Integer ib ; if ( tointegerns ( rb , & ib ) ) { pc ++ ; setivalue ( s2v ( ra ) , luaV_shiftl ( ib , - ic ) ) ; } vmbreak ; } vmcase ( OP_SHLI ) { TValue * rb = vRB ( i ) ; int ic = GETARG_sC ( i ) ; lua_Integer ib ; if ( tointegerns ( rb , & ib ) ) { pc ++ ; setivalue ( s2v ( ra ) , luaV_shiftl ( ic , ib ) ) ; } vmbreak ; } vmcase ( OP_ADD ) { op_arith ( L , l_addi , luai_numadd ) ; vmbreak ; } vmcase ( OP_SUB ) { op_arith ( L , l_subi , luai_numsub ) ; vmbreak ; } vmcase ( OP_MUL ) { op_arith ( L , l_muli , luai_nummul ) ; vmbreak ; } vmcase ( OP_MOD ) { op_arith ( L , luaV_mod , luaV_modf ) ; vmbreak ; } vmcase ( OP_POW ) { op_arithf ( L , luai_numpow ) ; vmbreak ; } vmcase ( OP_DIV ) { op_arithf ( L , luai_numdiv ) ; vmbreak ; } vmcase ( OP_IDIV ) { op_arith ( L , luaV_idiv , luai_numidiv ) ; vmbreak ; } vmcase ( OP_BAND ) { op_bitwise ( L , l_band ) ; vmbreak ; } vmcase ( OP_BOR ) { op_bitwise ( L , l_bor ) ; vmbreak ; } vmcase ( OP_BXOR ) { op_bitwise ( L , l_bxor ) ; vmbreak ; } vmcase ( OP_SHR ) { op_bitwise ( L , luaV_shiftr ) ; vmbreak ; } vmcase ( OP_SHL ) { op_bitwise ( L , luaV_shiftl ) ; vmbreak ; } vmcase ( OP_MMBIN ) { Instruction pi = * ( pc - 2 ) ; TValue * rb = vRB ( i ) ; TMS tm = ( TMS ) GETARG_C ( i ) ; StkId result = RA ( pi ) ; lua_assert ( OP_ADD <= GET_OPCODE ( pi ) && GET_OPCODE ( pi ) <= OP_SHR ) ; Protect ( luaT_trybinTM ( L , s2v ( ra ) , rb , result , tm ) ) ; vmbreak ; } vmcase ( OP_MMBINI ) { Instruction pi = * ( pc - 2 ) ; int imm = GETARG_sB ( i ) ; TMS tm = ( TMS ) GETARG_C ( i ) ; int flip = GETARG_k ( i ) ; StkId result = RA ( pi ) ; Protect ( luaT_trybiniTM ( L , s2v ( ra ) , imm , flip , result , tm ) ) ; vmbreak ; } vmcase ( OP_MMBINK ) { Instruction pi = * ( pc - 2 ) ; TValue * imm = KB ( i ) ; TMS tm = ( TMS ) GETARG_C ( i ) ; int flip = GETARG_k ( i ) ; StkId result = RA ( pi ) ; Protect ( luaT_trybinassocTM ( L , s2v ( ra ) , imm , flip , result , tm ) ) ; vmbreak ; } vmcase ( OP_UNM ) { TValue * rb = vRB ( i ) ; lua_Number nb ; if ( ttisinteger ( rb ) ) { lua_Integer ib = ivalue ( rb ) ; setivalue ( s2v ( ra ) , intop ( - , 0 , ib ) ) ; } else if ( tonumberns ( rb , nb ) ) { setfltvalue ( s2v ( ra ) , luai_numunm ( L , nb ) ) ; } else Protect ( luaT_trybinTM ( L , rb , rb , ra , TM_UNM ) ) ; vmbreak ; } vmcase ( OP_BNOT ) { TValue * rb = vRB ( i ) ; lua_Integer ib ; if ( tointegerns ( rb , & ib ) ) { setivalue ( s2v ( ra ) , intop ( ^ , ~ l_castS2U ( 0 ) , ib ) ) ; } else Protect ( luaT_trybinTM ( L , rb , rb , ra , TM_BNOT ) ) ; vmbreak ; } vmcase ( OP_NOT ) { TValue * rb = vRB ( i ) ; if ( l_isfalse ( rb ) ) setbtvalue ( s2v ( ra ) ) ; else setbfvalue ( s2v ( ra ) ) ; vmbreak ; } vmcase ( OP_LEN ) { Protect ( luaV_objlen ( L , ra , vRB ( i ) ) ) ; vmbreak ; } vmcase ( OP_CONCAT ) { int n = GETARG_B ( i ) ; L -> top = ra + n ; ProtectNT ( luaV_concat ( L , n ) ) ; checkGC ( L , L -> top ) ; vmbreak ; } vmcase ( OP_CLOSE ) { Protect ( luaF_close ( L , ra , LUA_OK ) ) ; vmbreak ; } vmcase ( OP_TBC ) { halfProtect ( luaF_newtbcupval ( L , ra ) ) ; vmbreak ; } vmcase ( OP_JMP ) { dojump ( ci , i , 0 ) ; vmbreak ; } vmcase ( OP_EQ ) { int cond ; TValue * rb = vRB ( i ) ; Protect ( cond = luaV_equalobj ( L , s2v ( ra ) , rb ) ) ; docondjump ( ) ; vmbreak ; } vmcase ( OP_LT ) { op_order ( L , l_lti , LTnum , lessthanothers ) ; vmbreak ; } vmcase ( OP_LE ) { op_order ( L , l_lei , LEnum , lessequalothers ) ; vmbreak ; } vmcase ( OP_EQK ) { TValue * rb = KB ( i ) ; int cond = luaV_rawequalobj ( s2v ( ra ) , rb ) ; docondjump ( ) ; vmbreak ; } vmcase ( OP_EQI ) { int cond ; int im = GETARG_sB ( i ) ; if ( ttisinteger ( s2v ( ra ) ) ) cond = ( ivalue ( s2v ( ra ) ) == im ) ; else if ( ttisfloat ( s2v ( ra ) ) ) cond = luai_numeq ( fltvalue ( s2v ( ra ) ) , cast_num ( im ) ) ; else cond = 0 ; docondjump ( ) ; vmbreak ; } vmcase ( OP_LTI ) { op_orderI ( L , l_lti , luai_numlt , 0 , TM_LT ) ; vmbreak ; } vmcase ( OP_LEI ) { op_orderI ( L , l_lei , luai_numle , 0 , TM_LE ) ; vmbreak ; } vmcase ( OP_GTI ) { op_orderI ( L , l_gti , luai_numgt , 1 , TM_LT ) ; vmbreak ; } vmcase ( OP_GEI ) { op_orderI ( L , l_gei , luai_numge , 1 , TM_LE ) ; vmbreak ; } vmcase ( OP_TEST ) { int cond = ! l_isfalse ( s2v ( ra ) ) ; docondjump ( ) ; vmbreak ; } vmcase ( OP_TESTSET ) { TValue * rb = vRB ( i ) ; if ( l_isfalse ( rb ) == GETARG_k ( i ) ) pc ++ ; else { setobj2s ( L , ra , rb ) ; donextjump ( ci ) ; } vmbreak ; } vmcase ( OP_CALL ) { int b = GETARG_B ( i ) ; int nresults = GETARG_C ( i ) - 1 ; if ( b != 0 ) L -> top = ra + b ; ProtectNT ( luaD_call ( L , ra , nresults ) ) ; vmbreak ; } vmcase ( OP_TAILCALL ) { int b = GETARG_B ( i ) ; int nparams1 = GETARG_C ( i ) ; int delta = ( nparams1 ) ? ci -> u . l . nextraargs + nparams1 : 0 ; if ( b != 0 ) L -> top = ra + b ; else b = cast_int ( L -> top - ra ) ; savepc ( ci ) ; if ( TESTARG_k ( i ) ) { luaF_close ( L , base , NOCLOSINGMETH ) ; lua_assert ( base == ci -> func + 1 ) ; } while ( ! ttisfunction ( s2v ( ra ) ) ) { luaD_tryfuncTM ( L , ra ) ; b ++ ; <S2SV_StartBug> checkstackp ( L , 1 , ra ) ; <S2SV_EndBug> } if ( ! ttisLclosure ( s2v ( ra ) ) ) { luaD_call ( L , ra , LUA_MULTRET ) ; updatetrap ( ci ) ; updatestack ( ci ) ; ci -> func -= delta ; luaD_poscall ( L , ci , cast_int ( L -> top - ra ) ) ; return ; } ci -> func -= delta ; luaD_pretailcall ( L , ci , ra , b ) ; goto tailcall ; } vmcase ( OP_RETURN ) { int n = GETARG_B ( i ) - 1 ; int nparams1 = GETARG_C ( i ) ; if ( n < 0 ) n = cast_int ( L -> top - ra ) ; savepc ( ci ) ; if ( TESTARG_k ( i ) ) { if ( L -> top < ci -> top ) L -> top = ci -> top ; luaF_close ( L , base , LUA_OK ) ; updatetrap ( ci ) ; updatestack ( ci ) ; } if ( nparams1 ) ci -> func -= ci -> u . l . nextraargs + nparams1 ; L -> top = ra + n ; luaD_poscall ( L , ci , n ) ; return ; } vmcase ( OP_RETURN0 ) { if ( L -> hookmask ) { L -> top = ra ; halfProtectNT ( luaD_poscall ( L , ci , 0 ) ) ; } else { int nres = ci -> nresults ; L -> ci = ci -> previous ; L -> top = base - 1 ; while ( nres -- > 0 ) setnilvalue ( s2v ( L -> top ++ ) ) ; } return ; } vmcase ( OP_RETURN1 ) { if ( L -> hookmask ) { L -> top = ra + 1 ; halfProtectNT ( luaD_poscall ( L , ci , 1 ) ) ; } else { int nres = ci -> nresults ; L -> ci = ci -> previous ; if ( nres == 0 ) L -> top = base - 1 ; else { setobjs2s ( L , base - 1 , ra ) ; L -> top = base ; while ( -- nres > 0 ) setnilvalue ( s2v ( L -> top ++ ) ) ; } } return ; } vmcase ( OP_FORLOOP ) { if ( ttisinteger ( s2v ( ra + 2 ) ) ) { lua_Unsigned count = l_castS2U ( ivalue ( s2v ( ra + 1 ) ) ) ; if ( count > 0 ) { lua_Integer step = ivalue ( s2v ( ra + 2 ) ) ; lua_Integer idx = ivalue ( s2v ( ra ) ) ; chgivalue ( s2v ( ra + 1 ) , count - 1 ) ; idx = intop ( + , idx , step ) ; chgivalue ( s2v ( ra ) , idx ) ; setivalue ( s2v ( ra + 3 ) , idx ) ; pc -= GETARG_Bx ( i ) ; } } else if ( floatforloop ( ra ) ) pc -= GETARG_Bx ( i ) ; updatetrap ( ci ) ; vmbreak ; } vmcase ( OP_FORPREP ) { savestate ( L , ci ) ; if ( forprep ( L , ra ) ) pc += GETARG_Bx ( i ) + 1 ; vmbreak ; } vmcase ( OP_TFORPREP ) { halfProtect ( luaF_newtbcupval ( L , ra + 3 ) ) ; pc += GETARG_Bx ( i ) ; i = * ( pc ++ ) ; lua_assert ( GET_OPCODE ( i ) == OP_TFORCALL && ra == RA ( i ) ) ; goto l_tforcall ; } vmcase ( OP_TFORCALL ) { l_tforcall : memcpy ( ra + 4 , ra , 3 * sizeof ( * ra ) ) ; L -> top = ra + 4 + 3 ; ProtectNT ( luaD_call ( L , ra + 4 , GETARG_C ( i ) ) ) ; updatestack ( ci ) ; i = * ( pc ++ ) ; lua_assert ( GET_OPCODE ( i ) == OP_TFORLOOP && ra == RA ( i ) ) ; goto l_tforloop ; } vmcase ( OP_TFORLOOP ) { l_tforloop : if ( ! ttisnil ( s2v ( ra + 4 ) ) ) { setobjs2s ( L , ra + 2 , ra + 4 ) ; pc -= GETARG_Bx ( i ) ; } vmbreak ; } vmcase ( OP_SETLIST ) { int n = GETARG_B ( i ) ; unsigned int last = GETARG_C ( i ) ; Table * h = hvalue ( s2v ( ra ) ) ; if ( n == 0 ) n = cast_int ( L -> top - ra ) - 1 ; else L -> top = ci -> top ; last += n ; if ( TESTARG_k ( i ) ) { last += GETARG_Ax ( * pc ) * ( MAXARG_C + 1 ) ; pc ++ ; } if ( last > luaH_realasize ( h ) ) luaH_resizearray ( L , h , last ) ; for ( ; n > 0 ; n -- ) { TValue * val = s2v ( ra + n ) ; setobj2t ( L , & h -> array [ last - 1 ] , val ) ; last -- ; luaC_barrierback ( L , obj2gco ( h ) , val ) ; } vmbreak ; } vmcase ( OP_CLOSURE ) { Proto * p = cl -> p -> p [ GETARG_Bx ( i ) ] ; halfProtect ( pushclosure ( L , p , cl -> upvals , base , ra ) ) ; checkGC ( L , ra + 1 ) ; vmbreak ; } vmcase ( OP_VARARG ) { int n = GETARG_C ( i ) - 1 ; Protect ( luaT_getvarargs ( L , ci , ra , n ) ) ; vmbreak ; } vmcase ( OP_VARARGPREP ) { luaT_adjustvarargs ( L , GETARG_A ( i ) , ci , cl -> p ) ; updatetrap ( ci ) ; if ( trap ) { luaD_hookcall ( L , ci ) ; L -> oldpc = pc + 1 ; } updatebase ( ci ) ; vmbreak ; } vmcase ( OP_EXTRAARG ) { lua_assert ( 0 ) ; vmbreak ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> b ++ ; checkstackGCp <S2SV_ModEnd> ( L ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_active_map ( const vpx_codec_enc_cfg_t * cfg , vpx_codec_ctx_t * codec ) { unsigned int i ; <S2SV_StartBug> vpx_active_map_t map = { 0 } ; <S2SV_EndBug> map . rows = ( cfg -> g_h + 15 ) / 16 ; map . cols = ( cfg -> g_w + 15 ) / 16 ; map . active_map = ( uint8_t * ) malloc ( map . rows * map . cols ) ; for ( i = 0 ; i < map . rows * map . cols ; ++ i ) map . active_map [ i ] = i % 2 ; if ( vpx_codec_control ( codec , VP8E_SET_ACTIVEMAP , & map ) ) die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>active<S2SV_blank>map\" ) ; free ( map . active_map ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> map = { 0 , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-434(危险文件上传限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19925\n\n```\nCWE-434 static int zipfileUpdate ( sqlite3_vtab * pVtab , int nVal , sqlite3_value * * apVal , sqlite_int64 * pRowid ) { ZipfileTab * pTab = ( ZipfileTab * ) pVtab ; int rc = SQLITE_OK ; ZipfileEntry * pNew = 0 ; u32 mode = 0 ; u32 mTime = 0 ; i64 sz = 0 ; const char * zPath = 0 ; int nPath = 0 ; const u8 * pData = 0 ; int nData = 0 ; int iMethod = 0 ; u8 * pFree = 0 ; char * zFree = 0 ; ZipfileEntry * pOld = 0 ; ZipfileEntry * pOld2 = 0 ; int bUpdate = 0 ; int bIsDir = 0 ; u32 iCrc32 = 0 ; if ( pTab -> pWriteFd == 0 ) { rc = zipfileBegin ( pVtab ) ; if ( rc != SQLITE_OK ) return rc ; } if ( sqlite3_value_type ( apVal [ 0 ] ) != SQLITE_NULL ) { const char * zDelete = ( const char * ) sqlite3_value_text ( apVal [ 0 ] ) ; int nDelete = ( int ) strlen ( zDelete ) ; if ( nVal > 1 ) { const char * zUpdate = ( const char * ) sqlite3_value_text ( apVal [ 1 ] ) ; if ( zUpdate && zipfileComparePath ( zUpdate , zDelete , nDelete ) != 0 ) { bUpdate = 1 ; } } for ( pOld = pTab -> pFirstEntry ; 1 ; pOld = pOld -> pNext ) { if ( zipfileComparePath ( pOld -> cds . zFile , zDelete , nDelete ) == 0 ) { break ; } assert ( pOld -> pNext ) ; } } if ( nVal > 1 ) { if ( sqlite3_value_type ( apVal [ 5 ] ) != SQLITE_NULL ) { zipfileTableErr ( pTab , \"sz<S2SV_blank>must<S2SV_blank>be<S2SV_blank>NULL\" ) ; rc = SQLITE_CONSTRAINT ; } if ( sqlite3_value_type ( apVal [ 6 ] ) != SQLITE_NULL ) { zipfileTableErr ( pTab , \"rawdata<S2SV_blank>must<S2SV_blank>be<S2SV_blank>NULL\" ) ; rc = SQLITE_CONSTRAINT ; } if ( rc == SQLITE_OK ) { if ( sqlite3_value_type ( apVal [ 7 ] ) == SQLITE_NULL ) { bIsDir = 1 ; } else { const u8 * aIn = sqlite3_value_blob ( apVal [ 7 ] ) ; int nIn = sqlite3_value_bytes ( apVal [ 7 ] ) ; int bAuto = sqlite3_value_type ( apVal [ 8 ] ) == SQLITE_NULL ; iMethod = sqlite3_value_int ( apVal [ 8 ] ) ; sz = nIn ; pData = aIn ; nData = nIn ; if ( iMethod != 0 && iMethod != 8 ) { zipfileTableErr ( pTab , \"unknown<S2SV_blank>compression<S2SV_blank>method:<S2SV_blank>%d\" , iMethod ) ; rc = SQLITE_CONSTRAINT ; } else { if ( bAuto || iMethod ) { int nCmp ; rc = zipfileDeflate ( aIn , nIn , & pFree , & nCmp , & pTab -> base . zErrMsg ) ; if ( rc == SQLITE_OK ) { if ( iMethod || nCmp < nIn ) { iMethod = 8 ; pData = pFree ; nData = nCmp ; } } } iCrc32 = crc32 ( 0 , aIn , nIn ) ; } } } if ( rc == SQLITE_OK ) { rc = zipfileGetMode ( apVal [ 3 ] , bIsDir , & mode , & pTab -> base . zErrMsg ) ; } if ( rc == SQLITE_OK ) { zPath = ( const char * ) sqlite3_value_text ( apVal [ 2 ] ) ; <S2SV_StartBug> nPath = ( int ) strlen ( zPath ) ; <S2SV_EndBug> mTime = zipfileGetTime ( apVal [ 4 ] ) ; } if ( rc == SQLITE_OK && bIsDir ) { if ( zPath [ nPath - 1 ] != '/' ) { zFree = sqlite3_mprintf ( \"%s/\" , zPath ) ; if ( zFree == 0 ) { rc = SQLITE_NOMEM ; } zPath = ( const char * ) zFree ; nPath ++ ; } } if ( ( pOld == 0 || bUpdate ) && rc == SQLITE_OK ) { ZipfileEntry * p ; for ( p = pTab -> pFirstEntry ; p ; p = p -> pNext ) { if ( zipfileComparePath ( p -> cds . zFile , zPath , nPath ) == 0 ) { switch ( sqlite3_vtab_on_conflict ( pTab -> db ) ) { case SQLITE_IGNORE : { goto zipfile_update_done ; } case SQLITE_REPLACE : { pOld2 = p ; break ; } default : { zipfileTableErr ( pTab , \"duplicate<S2SV_blank>name:<S2SV_blank>\\\\\"%s\\\\\"\" , zPath ) ; rc = SQLITE_CONSTRAINT ; break ; } } break ; } } } if ( rc == SQLITE_OK ) { pNew = zipfileNewEntry ( zPath ) ; if ( pNew == 0 ) { rc = SQLITE_NOMEM ; } else { pNew -> cds . iVersionMadeBy = ZIPFILE_NEWENTRY_MADEBY ; pNew -> cds . iVersionExtract = ZIPFILE_NEWENTRY_REQUIRED ; pNew -> cds . flags = ZIPFILE_NEWENTRY_FLAGS ; pNew -> cds . iCompression = ( u16 ) iMethod ; zipfileMtimeToDos ( & pNew -> cds , mTime ) ; pNew -> cds . crc32 = iCrc32 ; pNew -> cds . szCompressed = nData ; pNew -> cds . szUncompressed = ( u32 ) sz ; pNew -> cds . iExternalAttr = ( mode << 16 ) ; pNew -> cds . iOffset = ( u32 ) pTab -> szCurrent ; pNew -> cds . nFile = ( u16 ) nPath ; pNew -> mUnixTime = ( u32 ) mTime ; rc = zipfileAppendEntry ( pTab , pNew , pData , nData ) ; zipfileAddEntry ( pTab , pOld , pNew ) ; } } } if ( rc == SQLITE_OK && ( pOld || pOld2 ) ) { ZipfileCsr * pCsr ; for ( pCsr = pTab -> pCsrList ; pCsr ; pCsr = pCsr -> pCsrNext ) { if ( pCsr -> pCurrent && ( pCsr -> pCurrent == pOld || pCsr -> pCurrent == pOld2 ) ) { pCsr -> pCurrent = pCsr -> pCurrent -> pNext ; pCsr -> bNoop = 1 ; } } zipfileRemoveEntryFromList ( pTab , pOld ) ; zipfileRemoveEntryFromList ( pTab , pOld2 ) ; } zipfile_update_done : sqlite3_free ( pFree ) ; sqlite3_free ( zFree ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; if ( zPath == 0 ) zPath = \"\" ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3673\n\n```\nCWE-399 sctp_disposition_t sctp_sf_do_asconf ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { struct sctp_chunk * chunk = arg ; struct sctp_chunk * asconf_ack = NULL ; struct sctp_paramhdr * err_param = NULL ; sctp_addiphdr_t * hdr ; <S2SV_StartBug> union sctp_addr_param * addr_param ; <S2SV_EndBug> __u32 serial ; int length ; if ( ! sctp_vtag_verify ( chunk , asoc ) ) { sctp_add_cmd_sf ( commands , SCTP_CMD_REPORT_BAD_TAG , SCTP_NULL ( ) ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } if ( ! net -> sctp . addip_noauth && ! chunk -> auth ) return sctp_sf_discard_chunk ( net , ep , asoc , type , arg , commands ) ; if ( ! sctp_chunk_length_valid ( chunk , sizeof ( sctp_addip_chunk_t ) ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; hdr = ( sctp_addiphdr_t * ) chunk -> skb -> data ; serial = ntohl ( hdr -> serial ) ; <S2SV_StartBug> addr_param = ( union sctp_addr_param * ) hdr -> params ; <S2SV_EndBug> length = ntohs ( addr_param -> p . length ) ; if ( length < sizeof ( sctp_paramhdr_t ) ) return sctp_sf_violation_paramlen ( net , ep , asoc , type , arg , ( void * ) addr_param , commands ) ; if ( ! sctp_verify_asconf ( asoc , <S2SV_StartBug> ( sctp_paramhdr_t * ) ( ( void * ) addr_param + length ) , <S2SV_EndBug> ( void * ) chunk -> chunk_end , & err_param ) ) return sctp_sf_violation_paramlen ( net , ep , asoc , type , arg , ( void * ) err_param , commands ) ; if ( serial == asoc -> peer . addip_serial + 1 ) { if ( ! chunk -> has_asconf ) sctp_assoc_clean_asconf_ack_cache ( asoc ) ; asconf_ack = sctp_process_asconf ( ( struct sctp_association * ) asoc , chunk ) ; if ( ! asconf_ack ) return SCTP_DISPOSITION_NOMEM ; } else if ( serial < asoc -> peer . addip_serial + 1 ) { asconf_ack = sctp_assoc_lookup_asconf_ack ( asoc , hdr -> serial ) ; if ( ! asconf_ack ) return SCTP_DISPOSITION_DISCARD ; asconf_ack -> transport = NULL ; } else { return SCTP_DISPOSITION_DISCARD ; } asconf_ack -> dest = chunk -> source ; sctp_add_cmd_sf ( commands , SCTP_CMD_REPLY , SCTP_CHUNK ( asconf_ack ) ) ; if ( asoc -> new_transport ) { sctp_sf_heartbeat ( ep , asoc , type , asoc -> new_transport , commands ) ; ( ( struct sctp_association * ) asoc ) -> new_transport = NULL ; } return SCTP_DISPOSITION_CONSUME ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * hdr ; __u32 serial <S2SV_ModEnd> ; if ( <S2SV_ModStart> serial ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> ( asoc , chunk , true , <S2SV_ModEnd> & err_param )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15931\n\n```\nCWE-125 static Sdb * store_versioninfo_gnu_verneed ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { ut8 * end , * need = NULL ; const char * section_name = \"\" ; Elf_ ( Shdr ) * link_shdr = NULL ; const char * link_section_name = \"\" ; Sdb * sdb_vernaux = NULL ; Sdb * sdb_version = NULL ; Sdb * sdb = NULL ; int i , cnt ; if ( ! bin || ! bin -> dynstr ) { return NULL ; } if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return NULL ; } if ( shdr -> sh_size < 1 ) { return NULL ; } sdb = sdb_new0 ( ) ; if ( ! sdb ) { return NULL ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! ( need = ( ut8 * ) calloc ( R_MAX ( 1 , shdr -> sh_size ) , sizeof ( ut8 ) ) ) ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Elf_(Verneed)\\\\n\" ) ; goto beach ; } end = need + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"num_entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; if ( shdr -> sh_offset > bin -> size || shdr -> sh_offset + shdr -> sh_size > bin -> size ) { goto beach ; } if ( shdr -> sh_offset + shdr -> sh_size < shdr -> sh_size ) { goto beach ; } i = r_buf_read_at ( bin -> b , shdr -> sh_offset , need , shdr -> sh_size ) ; if ( i < 0 ) goto beach ; for ( i = 0 , cnt = 0 ; cnt < shdr -> sh_info ; ++ cnt ) { int j , isum ; ut8 * vstart = need + i ; Elf_ ( Verneed ) vvn = { 0 } ; if ( vstart + sizeof ( Elf_ ( Verneed ) ) > end ) { goto beach ; } Elf_ ( Verneed ) * entry = & vvn ; char key [ 32 ] = { 0 } ; sdb_version = sdb_new0 ( ) ; if ( ! sdb_version ) { goto beach ; } j = 0 ; vvn . vn_version = READ16 ( vstart , j ) vvn . vn_cnt = READ16 ( vstart , j ) vvn . vn_file = READ32 ( vstart , j ) vvn . vn_aux = READ32 ( vstart , j ) vvn . vn_next = READ32 ( vstart , j ) sdb_num_set ( sdb_version , \"vn_version\" , entry -> vn_version , 0 ) ; sdb_num_set ( sdb_version , \"idx\" , i , 0 ) ; if ( entry -> vn_file > bin -> dynstr_size ) { goto beach ; } { char * s = r_str_ndup ( & bin -> dynstr [ entry -> vn_file ] , 16 ) ; sdb_set ( sdb_version , \"file_name\" , s , 0 ) ; free ( s ) ; } sdb_num_set ( sdb_version , \"cnt\" , entry -> vn_cnt , 0 ) ; <S2SV_StartBug> vstart += entry -> vn_aux ; <S2SV_EndBug> for ( j = 0 , isum = i + entry -> vn_aux ; j < entry -> vn_cnt && vstart + sizeof ( Elf_ ( Vernaux ) ) <= end ; ++ j ) { int k ; Elf_ ( Vernaux ) * aux = NULL ; Elf_ ( Vernaux ) vaux = { 0 } ; sdb_vernaux = sdb_new0 ( ) ; if ( ! sdb_vernaux ) { goto beach ; } aux = ( Elf_ ( Vernaux ) * ) & vaux ; k = 0 ; vaux . vna_hash = READ32 ( vstart , k ) vaux . vna_flags = READ16 ( vstart , k ) vaux . vna_other = READ16 ( vstart , k ) vaux . vna_name = READ32 ( vstart , k ) vaux . vna_next = READ32 ( vstart , k ) if ( aux -> vna_name > bin -> dynstr_size ) { goto beach ; } sdb_num_set ( sdb_vernaux , \"idx\" , isum , 0 ) ; if ( aux -> vna_name > 0 && aux -> vna_name + 8 < bin -> dynstr_size ) { char name [ 16 ] ; strncpy ( name , & bin -> dynstr [ aux -> vna_name ] , sizeof ( name ) - 1 ) ; name [ sizeof ( name ) - 1 ] = 0 ; sdb_set ( sdb_vernaux , \"name\" , name , 0 ) ; } sdb_set ( sdb_vernaux , \"flags\" , get_ver_flags ( aux -> vna_flags ) , 0 ) ; sdb_num_set ( sdb_vernaux , \"version\" , aux -> vna_other , 0 ) ; isum += aux -> vna_next ; vstart += aux -> vna_next ; snprintf ( key , sizeof ( key ) , \"vernaux%d\" , j ) ; sdb_ns_set ( sdb_version , key , sdb_vernaux ) ; } if ( ( int ) entry -> vn_next < 0 ) { bprintf ( \"Invalid<S2SV_blank>vn_next\\\\n\" ) ; break ; } i += entry -> vn_next ; snprintf ( key , sizeof ( key ) , \"version%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_version ) ; if ( ! entry -> vn_next ) { break ; } } free ( need ) ; return sdb ; beach : free ( need ) ; sdb_free ( sdb_vernaux ) ; sdb_free ( sdb_version ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; st32 vnaux = entry -> vn_aux ; if ( vnaux < 1 ) { goto beach ; } vstart += vnaux <S2SV_ModEnd> ; for (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static void copy_fields ( const FieldMatchContext * fm , AVFrame * dst , const AVFrame * src , int field ) { int plane ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && src -> data [ plane ] ; plane ++ ) <S2SV_EndBug> av_image_copy_plane ( dst -> data [ plane ] + field * dst -> linesize [ plane ] , dst -> linesize [ plane ] << 1 , src -> data [ plane ] + field * src -> linesize [ plane ] , src -> linesize [ plane ] << 1 , get_width ( fm , src , plane ) , get_height ( fm , src , plane ) / 2 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> src -> data [ plane ] && src -> linesize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_read_data ( SCSIRequest * req ) { SCSIDiskReq * r = DO_UPCAST ( SCSIDiskReq , req , req ) ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; uint32_t n ; if ( r -> sector_count == ( uint32_t ) - 1 ) { DPRINTF ( \"Read<S2SV_blank>buf_len=%zd\\\\n\" , r -> iov . iov_len ) ; r -> sector_count = 0 ; scsi_req_data ( & r -> req , r -> iov . iov_len ) ; return ; } DPRINTF ( \"Read<S2SV_blank>sector_count=%d\\\\n\" , r -> sector_count ) ; if ( r -> sector_count == 0 ) { scsi_req_complete ( & r -> req , GOOD ) ; return ; } assert ( r -> req . aiocb == NULL ) ; if ( r -> req . cmd . mode == SCSI_XFER_TO_DEV ) { DPRINTF ( \"Data<S2SV_blank>transfer<S2SV_blank>direction<S2SV_blank>invalid\\\\n\" ) ; scsi_read_complete ( r , - EINVAL ) ; return ; } <S2SV_StartBug> n = r -> sector_count ; <S2SV_EndBug> if ( n > SCSI_DMA_BUF_SIZE / 512 ) n = SCSI_DMA_BUF_SIZE / 512 ; if ( s -> tray_open ) { scsi_read_complete ( r , - ENOMEDIUM ) ; } <S2SV_StartBug> r -> iov . iov_len = n * 512 ; <S2SV_EndBug> <S2SV_StartBug> qemu_iovec_init_external ( & r -> qiov , & r -> iov , 1 ) ; <S2SV_EndBug> bdrv_acct_start ( s -> bs , & r -> acct , n * BDRV_SECTOR_SIZE , BDRV_ACCT_READ ) ; <S2SV_StartBug> r -> req . aiocb = bdrv_aio_readv ( s -> bs , r -> sector , & r -> qiov , n , <S2SV_EndBug> scsi_read_complete , r ) ; if ( r -> req . aiocb == NULL ) { scsi_read_complete ( r , - EIO ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } <S2SV_ModEnd> if ( s <S2SV_ModStart> ) ; } n = scsi_init_iovec ( r ) ; bdrv_acct_start ( s -> bs , & r -> acct , n * BDRV_SECTOR_SIZE , BDRV_ACCT_READ ) ; r -> req . aiocb = bdrv_aio_readv ( s -> bs , r -> sector , <S2SV_ModEnd> & r -> <S2SV_ModStart> -> qiov , n , scsi_read_complete , r ) ; if ( <S2SV_ModEnd> r -> req <S2SV_ModStart> req . aiocb <S2SV_ModEnd> == NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_setup_intra_recon_top_line ( YV12_BUFFER_CONFIG * ybf ) { <S2SV_StartBug> vpx_memset ( ybf -> y_buffer - 1 - ybf -> y_stride , 127 , ybf -> y_width + 5 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( ybf -> u_buffer - 1 - ybf -> uv_stride , 127 , ybf -> uv_width + 5 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( ybf -> v_buffer - 1 - ybf -> uv_stride , 127 , ybf -> uv_width + 5 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ybf ) { memset <S2SV_ModEnd> ( ybf -> <S2SV_ModStart> 5 ) ; memset <S2SV_ModEnd> ( ybf -> <S2SV_ModStart> 5 ) ; memset <S2SV_ModEnd> ( ybf ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3817\n\n```\nCWE-416 void comps_objmrtree_unite ( COMPS_ObjMRTree * rt1 , COMPS_ObjMRTree * rt2 ) { COMPS_HSList * tmplist , * tmp_subnodes ; COMPS_HSListItem * it ; COMPS_ObjListIt * it2 ; struct Pair { COMPS_HSList * subnodes ; char * key ; <S2SV_StartBug> char added ; <S2SV_EndBug> } * pair , * parent_pair ; pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = rt2 -> subnodes ; pair -> key = NULL ; tmplist = comps_hslist_create ( ) ; comps_hslist_init ( tmplist , NULL , NULL , & free ) ; comps_hslist_append ( tmplist , pair , 0 ) ; while ( tmplist -> first != NULL ) { it = tmplist -> first ; comps_hslist_remove ( tmplist , tmplist -> first ) ; tmp_subnodes = ( ( struct Pair * ) it -> data ) -> subnodes ; parent_pair = ( struct Pair * ) it -> data ; free ( it ) ; <S2SV_StartBug> pair -> added = 0 ; <S2SV_EndBug> for ( it = tmp_subnodes -> first ; it != NULL ; it = it -> next ) { pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = ( ( COMPS_ObjMRTreeData * ) it -> data ) -> subnodes ; if ( parent_pair -> key != NULL ) { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key ) + strlen ( parent_pair -> key ) + 1 ) ) ; memcpy ( pair -> key , parent_pair -> key , sizeof ( char ) * strlen ( parent_pair -> key ) ) ; memcpy ( pair -> key + strlen ( parent_pair -> key ) , ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } else { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key ) + 1 ) ) ; memcpy ( pair -> key , ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } if ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> data -> first != NULL ) { for ( it2 = ( ( COMPS_ObjMRTreeData * ) it -> data ) -> data -> first ; it2 != NULL ; it2 = it2 -> next ) { comps_objmrtree_set ( rt1 , pair -> key , it2 -> comps_obj ) ; } if ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } else { if ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } } free ( parent_pair -> key ) ; free ( parent_pair ) ; } comps_hslist_destroy ( & tmplist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * key ; <S2SV_ModEnd> } * pair <S2SV_ModStart> it ) ; <S2SV_ModEnd> for ( it\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15128\n\n```\nCWE-119 int hugetlb_mcopy_atomic_pte ( struct mm_struct * dst_mm , pte_t * dst_pte , struct vm_area_struct * dst_vma , unsigned long dst_addr , unsigned long src_addr , struct page * * pagep ) { <S2SV_StartBug> int vm_shared = dst_vma -> vm_flags & VM_SHARED ; <S2SV_EndBug> struct hstate * h = hstate_vma ( dst_vma ) ; pte_t _dst_pte ; spinlock_t * ptl ; int ret ; struct page * page ; if ( ! * pagep ) { ret = - ENOMEM ; page = alloc_huge_page ( dst_vma , dst_addr , 0 ) ; if ( IS_ERR ( page ) ) goto out ; ret = copy_huge_page_from_user ( page , ( const void __user * ) src_addr , pages_per_huge_page ( h ) , false ) ; if ( unlikely ( ret ) ) { ret = - EFAULT ; * pagep = page ; goto out ; } } else { page = * pagep ; * pagep = NULL ; } __SetPageUptodate ( page ) ; set_page_huge_active ( page ) ; <S2SV_StartBug> if ( vm_shared ) { <S2SV_EndBug> <S2SV_StartBug> struct address_space * mapping = dst_vma -> vm_file -> f_mapping ; <S2SV_EndBug> pgoff_t idx = vma_hugecache_offset ( h , dst_vma , dst_addr ) ; ret = huge_add_to_page_cache ( page , mapping , idx ) ; if ( ret ) goto out_release_nounlock ; } ptl = huge_pte_lockptr ( h , dst_mm , dst_pte ) ; <S2SV_StartBug> spin_lock ( ptl ) ; <S2SV_EndBug> ret = - EEXIST ; if ( ! huge_pte_none ( huge_ptep_get ( dst_pte ) ) ) goto out_release_unlock ; if ( vm_shared ) { page_dup_rmap ( page , true ) ; } else { ClearPagePrivate ( page ) ; hugepage_add_new_anon_rmap ( page , dst_vma , dst_addr ) ; } _dst_pte = make_huge_pte ( dst_vma , page , dst_vma -> vm_flags & VM_WRITE ) ; if ( dst_vma -> vm_flags & VM_WRITE ) _dst_pte = huge_pte_mkdirty ( _dst_pte ) ; _dst_pte = pte_mkyoung ( _dst_pte ) ; set_huge_pte_at ( dst_mm , dst_addr , dst_pte , _dst_pte ) ; ( void ) huge_ptep_set_access_flags ( dst_vma , dst_addr , dst_pte , _dst_pte , dst_vma -> vm_flags & VM_WRITE ) ; hugetlb_count_add ( pages_per_huge_page ( h ) , dst_mm ) ; update_mmu_cache ( dst_vma , dst_addr , dst_pte ) ; spin_unlock ( ptl ) ; if ( vm_shared ) unlock_page ( page ) ; ret = 0 ; out : return ret ; out_release_unlock : spin_unlock ( ptl ) ; if ( vm_shared ) unlock_page ( page ) ; out_release_nounlock : put_page ( page ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pagep ) { struct address_space * mapping ; pgoff_t idx ; unsigned long size ; <S2SV_ModStart> page ) ; mapping = dst_vma -> vm_file -> f_mapping ; idx = vma_hugecache_offset ( h , dst_vma , dst_addr ) ; <S2SV_ModStart> vm_shared ) { size = i_size_read ( mapping -> host ) >> huge_page_shift ( h ) ; ret = - EFAULT ; if ( idx >= size ) goto out_release_nounlock <S2SV_ModEnd> ; ret = <S2SV_ModStart> ( ptl ) ; size = i_size_read ( mapping -> host ) >> huge_page_shift ( h ) ; ret = - EFAULT ; if ( idx >= size ) goto out_release_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13094\n\n```\nCWE-476 int xfs_attr_shortform_to_leaf ( struct xfs_da_args * args , struct xfs_buf * * leaf_bp ) { xfs_inode_t * dp ; xfs_attr_shortform_t * sf ; xfs_attr_sf_entry_t * sfe ; xfs_da_args_t nargs ; char * tmpbuffer ; int error , i , size ; xfs_dablk_t blkno ; struct xfs_buf * bp ; xfs_ifork_t * ifp ; trace_xfs_attr_sf_to_leaf ( args ) ; dp = args -> dp ; ifp = dp -> i_afp ; sf = ( xfs_attr_shortform_t * ) ifp -> if_u1 . if_data ; size = be16_to_cpu ( sf -> hdr . totsize ) ; tmpbuffer = kmem_alloc ( size , KM_SLEEP ) ; ASSERT ( tmpbuffer != NULL ) ; memcpy ( tmpbuffer , ifp -> if_u1 . if_data , size ) ; sf = ( xfs_attr_shortform_t * ) tmpbuffer ; xfs_idata_realloc ( dp , - size , XFS_ATTR_FORK ) ; xfs_bmap_local_to_extents_empty ( dp , XFS_ATTR_FORK ) ; bp = NULL ; error = xfs_da_grow_inode ( args , & blkno ) ; if ( error ) { if ( error == - EIO ) goto out ; xfs_idata_realloc ( dp , size , XFS_ATTR_FORK ) ; memcpy ( ifp -> if_u1 . if_data , tmpbuffer , size ) ; goto out ; } ASSERT ( blkno == 0 ) ; error = xfs_attr3_leaf_create ( args , blkno , & bp ) ; if ( error ) { <S2SV_StartBug> error = xfs_da_shrink_inode ( args , 0 , bp ) ; <S2SV_EndBug> bp = NULL ; if ( error ) goto out ; xfs_idata_realloc ( dp , size , XFS_ATTR_FORK ) ; memcpy ( ifp -> if_u1 . if_data , tmpbuffer , size ) ; goto out ; } memset ( ( char * ) & nargs , 0 , sizeof ( nargs ) ) ; nargs . dp = dp ; nargs . geo = args -> geo ; nargs . firstblock = args -> firstblock ; nargs . dfops = args -> dfops ; nargs . total = args -> total ; nargs . whichfork = XFS_ATTR_FORK ; nargs . trans = args -> trans ; nargs . op_flags = XFS_DA_OP_OKNOENT ; sfe = & sf -> list [ 0 ] ; for ( i = 0 ; i < sf -> hdr . count ; i ++ ) { nargs . name = sfe -> nameval ; nargs . namelen = sfe -> namelen ; nargs . value = & sfe -> nameval [ nargs . namelen ] ; nargs . valuelen = sfe -> valuelen ; nargs . hashval = xfs_da_hashname ( sfe -> nameval , sfe -> namelen ) ; nargs . flags = XFS_ATTR_NSP_ONDISK_TO_ARGS ( sfe -> flags ) ; error = xfs_attr3_leaf_lookup_int ( bp , & nargs ) ; ASSERT ( error == - ENOATTR ) ; error = xfs_attr3_leaf_add ( bp , & nargs ) ; ASSERT ( error != - ENOSPC ) ; if ( error ) goto out ; sfe = XFS_ATTR_SF_NEXTENTRY ( sfe ) ; } error = 0 ; * leaf_bp = bp ; out : kmem_free ( tmpbuffer ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error ) { if ( bp && ( <S2SV_ModEnd> xfs_da_shrink_inode ( args <S2SV_ModStart> , bp ) != 0 ) <S2SV_ModEnd> ) goto out\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void validate_stream_config ( const struct stream_state * stream , const struct VpxEncoderConfig * global ) { const struct stream_state * streami ; <S2SV_StartBug> if ( ! stream -> config . cfg . g_w || ! stream -> config . cfg . g_h ) <S2SV_EndBug> fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>Specify<S2SV_blank>stream<S2SV_blank>dimensions<S2SV_blank>with<S2SV_blank>--width<S2SV_blank>(-w)<S2SV_blank>\" \"<S2SV_blank>and<S2SV_blank>--height<S2SV_blank>(-h)\" , stream -> index ) ; <S2SV_StartBug> if ( stream -> config . cfg . g_profile != 0 && ! global -> experimental_bitstream ) { <S2SV_EndBug> fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>profile<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>experimental<S2SV_blank>and<S2SV_blank>requires<S2SV_blank>the<S2SV_blank>--%s<S2SV_blank>flag\" , stream -> index , stream -> config . cfg . g_profile , experimental_bitstream . long_name ) ; } for ( streami = stream ; streami ; streami = streami -> next ) { <S2SV_StartBug> if ( ! streami -> config . out_fn ) <S2SV_EndBug> fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>Output<S2SV_blank>file<S2SV_blank>is<S2SV_blank>required<S2SV_blank>(specify<S2SV_blank>with<S2SV_blank>-o)\" , streami -> index ) ; if ( streami != stream ) { <S2SV_StartBug> const char * a = stream -> config . out_fn ; <S2SV_EndBug> const char * b = streami -> config . out_fn ; if ( ! strcmp ( a , b ) && strcmp ( a , \"/dev/null\" ) && strcmp ( a , \":nul\" ) ) fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>duplicate<S2SV_blank>output<S2SV_blank>file<S2SV_blank>(from<S2SV_blank>stream<S2SV_blank>%d)\" , streami -> index , stream -> index ) ; } if ( streami != stream ) { <S2SV_StartBug> const char * a = stream -> config . stats_fn ; <S2SV_EndBug> const char * b = streami -> config . stats_fn ; if ( a && b && ! strcmp ( a , b ) ) fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>duplicate<S2SV_blank>stats<S2SV_blank>file<S2SV_blank>(from<S2SV_blank>stream<S2SV_blank>%d)\" , streami -> index , stream -> index ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * streami ; ( void ) global ; <S2SV_ModStart> . cfg . g_input_bit_depth > ( unsigned int ) stream -> config . cfg . g_bit_depth ) { fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>codec<S2SV_blank>bit<S2SV_blank>depth<S2SV_blank>(%d)<S2SV_blank>less<S2SV_blank>than<S2SV_blank>input<S2SV_blank>bit<S2SV_blank>depth<S2SV_blank>(%d)\" , stream -> index , ( int ) stream -> config . cfg . g_bit_depth , stream -> config . cfg . g_input_bit_depth ) ; } for ( streami = stream ; streami ; streami = streami -> next ) { if ( ! streami -> config . out_fn ) fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>Output<S2SV_blank>file<S2SV_blank>is<S2SV_blank>required<S2SV_blank>(specify<S2SV_blank>with<S2SV_blank>-o)\" , streami -> index ) ; if ( streami != stream ) { const char * a = stream <S2SV_ModEnd> -> config . <S2SV_ModStart> config . out_fn ; const char * b = streami -> config . out_fn ; if ( ! strcmp ( a , b ) && strcmp ( a , \"/dev/null\" ) && strcmp ( a , \":nul\" ) ) fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>duplicate<S2SV_blank>output<S2SV_blank>file<S2SV_blank>(from<S2SV_blank>stream<S2SV_blank>%d)\" , streami -> index , stream -> index ) ; } <S2SV_ModEnd> if ( streami <S2SV_ModStart> -> config . stats_fn ; const char * b = streami -> config . stats_fn ; if ( a && b && ! strcmp ( a , b ) ) fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>duplicate<S2SV_blank>stats<S2SV_blank>file<S2SV_blank>(from<S2SV_blank>stream<S2SV_blank>%d)\" , streami -> index , stream -> index ) ; } # if CONFIG_FP_MB_STATS <S2SV_ModEnd> if ( streami <S2SV_ModStart> -> config . fpmb_stats_fn ; const char * b = streami -> config . fpmb_stats_fn ; if ( a && b && ! strcmp ( a , b ) ) fatal ( \"Stream<S2SV_blank>%d:<S2SV_blank>duplicate<S2SV_blank>mb<S2SV_blank>stats<S2SV_blank>file<S2SV_blank>(from<S2SV_blank>stream<S2SV_blank>%d)\" , streami -> index , stream -> index ) ; } # endif <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13022\n\n```\nCWE-125 static void ip_optprint ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register u_int option_len ; const char * sep = \"\" ; for ( ; length > 0 ; cp += option_len , length -= option_len ) { u_int option_code ; ND_PRINT ( ( ndo , \"%s\" , sep ) ) ; sep = \",\" ; ND_TCHECK ( * cp ) ; option_code = * cp ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( ip_option_values , \"unknown<S2SV_blank>%u\" , option_code ) ) ) ; if ( option_code == IPOPT_NOP || option_code == IPOPT_EOL ) option_len = 1 ; else { ND_TCHECK ( cp [ 1 ] ) ; option_len = cp [ 1 ] ; if ( option_len < 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; return ; } } if ( option_len > length ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; return ; } ND_TCHECK2 ( * cp , option_len ) ; switch ( option_code ) { case IPOPT_EOL : return ; case IPOPT_TS : ip_printts ( ndo , cp , option_len ) ; break ; case IPOPT_RR : case IPOPT_SSRR : case IPOPT_LSRR : <S2SV_StartBug> ip_printroute ( ndo , cp , option_len ) ; <S2SV_EndBug> break ; case IPOPT_RA : if ( option_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; break ; } ND_TCHECK ( cp [ 3 ] ) ; if ( EXTRACT_16BITS ( & cp [ 2 ] ) != 0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>value<S2SV_blank>%u\" , EXTRACT_16BITS ( & cp [ 2 ] ) ) ) ; break ; case IPOPT_NOP : case IPOPT_SECURITY : default : break ; } } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case IPOPT_LSRR : if ( <S2SV_ModStart> , option_len ) == - 1 ) goto trunc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12904\n\n```\nCWE-000 static int handle_vmon ( struct kvm_vcpu * vcpu ) { int ret ; gpa_t vmptr ; struct page * page ; struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; const u64 VMXON_NEEDED_FEATURES = FEATURE_CONTROL_LOCKED | FEATURE_CONTROL_VMXON_ENABLED_OUTSIDE_SMX ; <S2SV_StartBug> if ( ! kvm_read_cr4_bits ( vcpu , X86_CR4_VMXE ) ) { <S2SV_EndBug> kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } if ( vmx -> nested . vmxon ) { nested_vmx_failValid ( vcpu , VMXERR_VMXON_IN_VMX_ROOT_OPERATION ) ; return kvm_skip_emulated_instruction ( vcpu ) ; } if ( ( vmx -> msr_ia32_feature_control & VMXON_NEEDED_FEATURES ) != VMXON_NEEDED_FEATURES ) { kvm_inject_gp ( vcpu , 0 ) ; return 1 ; } if ( nested_vmx_get_vmptr ( vcpu , & vmptr ) ) return 1 ; if ( ! PAGE_ALIGNED ( vmptr ) || ( vmptr >> cpuid_maxphyaddr ( vcpu ) ) ) { nested_vmx_failInvalid ( vcpu ) ; return kvm_skip_emulated_instruction ( vcpu ) ; } page = kvm_vcpu_gpa_to_page ( vcpu , vmptr ) ; if ( is_error_page ( page ) ) { nested_vmx_failInvalid ( vcpu ) ; return kvm_skip_emulated_instruction ( vcpu ) ; } if ( * ( u32 * ) kmap ( page ) != VMCS12_REVISION ) { kunmap ( page ) ; kvm_release_page_clean ( page ) ; nested_vmx_failInvalid ( vcpu ) ; return kvm_skip_emulated_instruction ( vcpu ) ; } kunmap ( page ) ; kvm_release_page_clean ( page ) ; vmx -> nested . vmxon_ptr = vmptr ; ret = enter_vmx_operation ( vcpu ) ; if ( ret ) return ret ; nested_vmx_succeed ( vcpu ) ; return kvm_skip_emulated_instruction ( vcpu ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vcpu , X86_CR4_VMXE ) ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } if ( vmx_get_cpl ( vcpu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-863(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31829\n\n```\nCWE-863 static int do_misc_fixups ( struct bpf_verifier_env * env ) { struct bpf_prog * prog = env -> prog ; bool expect_blinding = bpf_jit_blinding_enabled ( prog ) ; struct bpf_insn * insn = prog -> insnsi ; const struct bpf_func_proto * fn ; const int insn_cnt = prog -> len ; const struct bpf_map_ops * ops ; struct bpf_insn_aux_data * aux ; struct bpf_insn insn_buf [ 16 ] ; struct bpf_prog * new_prog ; struct bpf_map * map_ptr ; int i , ret , cnt , delta = 0 ; for ( i = 0 ; i < insn_cnt ; i ++ , insn ++ ) { if ( insn -> code == ( BPF_ALU64 | BPF_MOD | BPF_X ) || insn -> code == ( BPF_ALU64 | BPF_DIV | BPF_X ) || insn -> code == ( BPF_ALU | BPF_MOD | BPF_X ) || insn -> code == ( BPF_ALU | BPF_DIV | BPF_X ) ) { bool is64 = BPF_CLASS ( insn -> code ) == BPF_ALU64 ; bool isdiv = BPF_OP ( insn -> code ) == BPF_DIV ; struct bpf_insn * patchlet ; struct bpf_insn chk_and_div [ ] = { BPF_RAW_INSN ( ( is64 ? BPF_JMP : BPF_JMP32 ) | BPF_JNE | BPF_K , insn -> src_reg , 0 , 2 , 0 ) , BPF_ALU32_REG ( BPF_XOR , insn -> dst_reg , insn -> dst_reg ) , BPF_JMP_IMM ( BPF_JA , 0 , 0 , 1 ) , * insn , } ; struct bpf_insn chk_and_mod [ ] = { BPF_RAW_INSN ( ( is64 ? BPF_JMP : BPF_JMP32 ) | BPF_JEQ | BPF_K , insn -> src_reg , 0 , 1 + ( is64 ? 0 : 1 ) , 0 ) , * insn , BPF_JMP_IMM ( BPF_JA , 0 , 0 , 1 ) , BPF_MOV32_REG ( insn -> dst_reg , insn -> dst_reg ) , } ; patchlet = isdiv ? chk_and_div : chk_and_mod ; cnt = isdiv ? ARRAY_SIZE ( chk_and_div ) : ARRAY_SIZE ( chk_and_mod ) - ( is64 ? 2 : 0 ) ; new_prog = bpf_patch_insn_data ( env , i + delta , patchlet , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } if ( BPF_CLASS ( insn -> code ) == BPF_LD && ( BPF_MODE ( insn -> code ) == BPF_ABS || BPF_MODE ( insn -> code ) == BPF_IND ) ) { cnt = env -> ops -> gen_ld_abs ( insn , insn_buf ) ; if ( cnt == 0 || cnt >= ARRAY_SIZE ( insn_buf ) ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } if ( insn -> code == ( BPF_ALU64 | BPF_ADD | BPF_X ) || insn -> code == ( BPF_ALU64 | BPF_SUB | BPF_X ) ) { const u8 code_add = BPF_ALU64 | BPF_ADD | BPF_X ; const u8 code_sub = BPF_ALU64 | BPF_SUB | BPF_X ; struct bpf_insn * patch = & insn_buf [ 0 ] ; <S2SV_StartBug> bool issrc , isneg ; <S2SV_EndBug> u32 off_reg ; aux = & env -> insn_aux_data [ i + delta ] ; if ( ! aux -> alu_state || aux -> alu_state == BPF_ALU_NON_POINTER ) continue ; isneg = aux -> alu_state & BPF_ALU_NEG_VALUE ; issrc = ( aux -> alu_state & BPF_ALU_SANITIZE ) == BPF_ALU_SANITIZE_SRC ; <S2SV_StartBug> off_reg = issrc ? insn -> src_reg : insn -> dst_reg ; <S2SV_EndBug> <S2SV_StartBug> if ( isneg ) <S2SV_EndBug> <S2SV_StartBug> * patch ++ = BPF_ALU64_IMM ( BPF_MUL , off_reg , - 1 ) ; <S2SV_EndBug> <S2SV_StartBug> * patch ++ = BPF_MOV32_IMM ( BPF_REG_AX , aux -> alu_limit ) ; <S2SV_EndBug> <S2SV_StartBug> * patch ++ = BPF_ALU64_REG ( BPF_SUB , BPF_REG_AX , off_reg ) ; <S2SV_EndBug> <S2SV_StartBug> * patch ++ = BPF_ALU64_REG ( BPF_OR , BPF_REG_AX , off_reg ) ; <S2SV_EndBug> <S2SV_StartBug> * patch ++ = BPF_ALU64_IMM ( BPF_NEG , BPF_REG_AX , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> * patch ++ = BPF_ALU64_IMM ( BPF_ARSH , BPF_REG_AX , 63 ) ; <S2SV_EndBug> <S2SV_StartBug> * patch ++ = BPF_ALU64_REG ( BPF_AND , BPF_REG_AX , off_reg ) ; <S2SV_EndBug> if ( ! issrc ) * patch ++ = BPF_MOV64_REG ( insn -> dst_reg , insn -> src_reg ) ; insn -> src_reg = BPF_REG_AX ; if ( isneg ) insn -> code = insn -> code == code_add ? code_sub : code_add ; * patch ++ = * insn ; <S2SV_StartBug> if ( issrc && isneg ) <S2SV_EndBug> * patch ++ = BPF_ALU64_IMM ( BPF_MUL , off_reg , - 1 ) ; cnt = patch - insn_buf ; new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } if ( insn -> code != ( BPF_JMP | BPF_CALL ) ) continue ; if ( insn -> src_reg == BPF_PSEUDO_CALL ) continue ; if ( insn -> src_reg == BPF_PSEUDO_KFUNC_CALL ) { ret = fixup_kfunc_call ( env , insn ) ; if ( ret ) return ret ; continue ; } if ( insn -> imm == BPF_FUNC_get_route_realm ) prog -> dst_needed = 1 ; if ( insn -> imm == BPF_FUNC_get_prandom_u32 ) bpf_user_rnd_init_once ( ) ; if ( insn -> imm == BPF_FUNC_override_return ) prog -> kprobe_override = 1 ; if ( insn -> imm == BPF_FUNC_tail_call ) { prog -> cb_access = 1 ; if ( ! allow_tail_call_in_subprogs ( env ) ) prog -> aux -> stack_depth = MAX_BPF_STACK ; prog -> aux -> max_pkt_offset = MAX_PACKET_OFF ; insn -> imm = 0 ; insn -> code = BPF_JMP | BPF_TAIL_CALL ; aux = & env -> insn_aux_data [ i + delta ] ; if ( env -> bpf_capable && ! expect_blinding && prog -> jit_requested && ! bpf_map_key_poisoned ( aux ) && ! bpf_map_ptr_poisoned ( aux ) && ! bpf_map_ptr_unpriv ( aux ) ) { struct bpf_jit_poke_descriptor desc = { . reason = BPF_POKE_REASON_TAIL_CALL , . tail_call . map = BPF_MAP_PTR ( aux -> map_ptr_state ) , . tail_call . key = bpf_map_key_immediate ( aux ) , . insn_idx = i + delta , } ; ret = bpf_jit_add_poke_descriptor ( prog , & desc ) ; if ( ret < 0 ) { verbose ( env , \"adding<S2SV_blank>tail<S2SV_blank>call<S2SV_blank>poke<S2SV_blank>descriptor<S2SV_blank>failed\\\\n\" ) ; return ret ; } insn -> imm = ret + 1 ; continue ; } if ( ! bpf_map_ptr_unpriv ( aux ) ) continue ; if ( bpf_map_ptr_poisoned ( aux ) ) { verbose ( env , \"tail_call<S2SV_blank>abusing<S2SV_blank>map_ptr\\\\n\" ) ; return - EINVAL ; } map_ptr = BPF_MAP_PTR ( aux -> map_ptr_state ) ; insn_buf [ 0 ] = BPF_JMP_IMM ( BPF_JGE , BPF_REG_3 , map_ptr -> max_entries , 2 ) ; insn_buf [ 1 ] = BPF_ALU32_IMM ( BPF_AND , BPF_REG_3 , container_of ( map_ptr , struct bpf_array , map ) -> index_mask ) ; insn_buf [ 2 ] = * insn ; cnt = 3 ; new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } if ( prog -> jit_requested && BITS_PER_LONG == 64 && ( insn -> imm == BPF_FUNC_map_lookup_elem || insn -> imm == BPF_FUNC_map_update_elem || insn -> imm == BPF_FUNC_map_delete_elem || insn -> imm == BPF_FUNC_map_push_elem || insn -> imm == BPF_FUNC_map_pop_elem || insn -> imm == BPF_FUNC_map_peek_elem || insn -> imm == BPF_FUNC_redirect_map ) ) { aux = & env -> insn_aux_data [ i + delta ] ; if ( bpf_map_ptr_poisoned ( aux ) ) goto patch_call_imm ; map_ptr = BPF_MAP_PTR ( aux -> map_ptr_state ) ; ops = map_ptr -> ops ; if ( insn -> imm == BPF_FUNC_map_lookup_elem && ops -> map_gen_lookup ) { cnt = ops -> map_gen_lookup ( map_ptr , insn_buf ) ; if ( cnt == - EOPNOTSUPP ) goto patch_map_ops_generic ; if ( cnt <= 0 || cnt >= ARRAY_SIZE ( insn_buf ) ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } BUILD_BUG_ON ( ! __same_type ( ops -> map_lookup_elem , ( void * ( * ) ( struct bpf_map * map , void * key ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_delete_elem , ( int ( * ) ( struct bpf_map * map , void * key ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_update_elem , ( int ( * ) ( struct bpf_map * map , void * key , void * value , u64 flags ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_push_elem , ( int ( * ) ( struct bpf_map * map , void * value , u64 flags ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_pop_elem , ( int ( * ) ( struct bpf_map * map , void * value ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_peek_elem , ( int ( * ) ( struct bpf_map * map , void * value ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_redirect , ( int ( * ) ( struct bpf_map * map , u32 ifindex , u64 flags ) ) NULL ) ) ; patch_map_ops_generic : switch ( insn -> imm ) { case BPF_FUNC_map_lookup_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_lookup_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_update_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_update_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_delete_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_delete_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_push_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_push_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_pop_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_pop_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_peek_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_peek_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_redirect_map : insn -> imm = BPF_CAST_CALL ( ops -> map_redirect ) - __bpf_call_base ; continue ; } goto patch_call_imm ; } if ( prog -> jit_requested && BITS_PER_LONG == 64 && insn -> imm == BPF_FUNC_jiffies64 ) { struct bpf_insn ld_jiffies_addr [ 2 ] = { BPF_LD_IMM64 ( BPF_REG_0 , ( unsigned long ) & jiffies ) , } ; insn_buf [ 0 ] = ld_jiffies_addr [ 0 ] ; insn_buf [ 1 ] = ld_jiffies_addr [ 1 ] ; insn_buf [ 2 ] = BPF_LDX_MEM ( BPF_DW , BPF_REG_0 , BPF_REG_0 , 0 ) ; cnt = 3 ; new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } patch_call_imm : fn = env -> ops -> get_func_proto ( insn -> imm , env -> prog ) ; if ( ! fn -> func ) { verbose ( env , \"kernel<S2SV_blank>subsystem<S2SV_blank>misconfigured<S2SV_blank>func<S2SV_blank>%s#%d\\\\n\" , func_id_name ( insn -> imm ) , insn -> imm ) ; return - EFAULT ; } insn -> imm = fn -> func - __bpf_call_base ; } for ( i = 0 ; i < prog -> aux -> size_poke_tab ; i ++ ) { map_ptr = prog -> aux -> poke_tab [ i ] . tail_call . map ; if ( ! map_ptr -> ops -> map_poke_track || ! map_ptr -> ops -> map_poke_untrack || ! map_ptr -> ops -> map_poke_run ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } ret = map_ptr -> ops -> map_poke_track ( map_ptr , prog -> aux ) ; if ( ret < 0 ) { verbose ( env , \"tracking<S2SV_blank>tail<S2SV_blank>call<S2SV_blank>prog<S2SV_blank>failed\\\\n\" ) ; return ret ; } } sort_kfunc_descs_by_imm ( env -> prog ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> issrc , isneg , isimm <S2SV_ModStart> == BPF_ALU_SANITIZE_SRC ; isimm = aux -> alu_state & BPF_ALU_IMMEDIATE ; <S2SV_ModStart> ; if ( isimm ) { <S2SV_ModEnd> * patch ++ <S2SV_ModStart> patch ++ = BPF_MOV32_IMM ( BPF_REG_AX , aux -> alu_limit ) ; } else { if ( isneg ) <S2SV_ModEnd> * patch ++ <S2SV_ModStart> patch ++ = BPF_ALU64_IMM ( BPF_MUL , off_reg , - 1 <S2SV_ModEnd> ) ; * <S2SV_ModStart> patch ++ = BPF_MOV32_IMM ( BPF_REG_AX , aux -> alu_limit <S2SV_ModEnd> ) ; * <S2SV_ModStart> = BPF_ALU64_REG ( BPF_SUB <S2SV_ModEnd> , BPF_REG_AX , <S2SV_ModStart> patch ++ = BPF_ALU64_REG ( BPF_OR <S2SV_ModEnd> , BPF_REG_AX , <S2SV_ModStart> , BPF_REG_AX , off_reg <S2SV_ModEnd> ) ; * <S2SV_ModStart> = BPF_ALU64_IMM ( BPF_NEG <S2SV_ModEnd> , BPF_REG_AX , <S2SV_ModStart> , BPF_REG_AX , 0 <S2SV_ModEnd> ) ; * <S2SV_ModStart> patch ++ = BPF_ALU64_IMM ( BPF_ARSH , BPF_REG_AX , 63 ) ; * patch ++ = <S2SV_ModStart> off_reg ) ; } <S2SV_ModStart> issrc && isneg && ! isimm\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3236\n\n```\nCWE-200 static int vmci_transport_dgram_dequeue ( struct kiocb * kiocb , struct vsock_sock * vsk , struct msghdr * msg , size_t len , int flags ) { int err ; int noblock ; struct vmci_datagram * dg ; size_t payload_len ; struct sk_buff * skb ; noblock = flags & MSG_DONTWAIT ; if ( flags & MSG_OOB || flags & MSG_ERRQUEUE ) return - EOPNOTSUPP ; <S2SV_StartBug> err = 0 ; <S2SV_EndBug> skb = skb_recv_datagram ( & vsk -> sk , flags , noblock , & err ) ; if ( err ) return err ; if ( ! skb ) return - EAGAIN ; dg = ( struct vmci_datagram * ) skb -> data ; if ( ! dg ) goto out ; payload_len = dg -> payload_size ; if ( payload_len != skb -> len - sizeof ( * dg ) ) { err = - EINVAL ; goto out ; } if ( payload_len > len ) { payload_len = len ; msg -> msg_flags |= MSG_TRUNC ; } err = skb_copy_datagram_iovec ( skb , sizeof ( * dg ) , msg -> msg_iov , payload_len ) ; if ( err ) goto out ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> if ( msg -> msg_name ) { struct sockaddr_vm * vm_addr ; vm_addr = ( struct sockaddr_vm * ) msg -> msg_name ; vsock_addr_init ( vm_addr , dg -> src . context , dg -> src . resource ) ; msg -> msg_namelen = sizeof ( * vm_addr ) ; } err = payload_len ; out : skb_free_datagram ( & vsk -> sk , skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EOPNOTSUPP ; msg -> msg_namelen = 0 ; <S2SV_ModStart> goto out ; <S2SV_ModEnd> if ( msg\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0237\n\n```\nCWE-399 int cdf_unpack_summary_info ( const cdf_stream_t * sst , const cdf_header_t * h , cdf_summary_info_header_t * ssi , cdf_property_info_t * * info , size_t * count ) { <S2SV_StartBug> size_t i , maxcount ; <S2SV_EndBug> const cdf_summary_info_header_t * si = CAST ( const cdf_summary_info_header_t * , sst -> sst_tab ) ; const cdf_section_declaration_t * sd = CAST ( const cdf_section_declaration_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + CDF_SECTION_DECLARATION_OFFSET ) ) ; if ( cdf_check_stream_offset ( sst , h , si , sizeof ( * si ) , __LINE__ ) == - 1 || cdf_check_stream_offset ( sst , h , sd , sizeof ( * sd ) , __LINE__ ) == - 1 ) return - 1 ; ssi -> si_byte_order = CDF_TOLE2 ( si -> si_byte_order ) ; ssi -> si_os_version = CDF_TOLE2 ( si -> si_os_version ) ; ssi -> si_os = CDF_TOLE2 ( si -> si_os ) ; ssi -> si_class = si -> si_class ; cdf_swap_class ( & ssi -> si_class ) ; <S2SV_StartBug> ssi -> si_count = CDF_TOLE2 ( si -> si_count ) ; <S2SV_EndBug> * count = 0 ; maxcount = 0 ; * info = NULL ; <S2SV_StartBug> for ( i = 0 ; i < CDF_TOLE4 ( si -> si_count ) ; i ++ ) { <S2SV_EndBug> if ( i >= CDF_LOOP_LIMIT ) { DPRINTF ( ( \"Unpack<S2SV_blank>summary<S2SV_blank>info<S2SV_blank>loop<S2SV_blank>limit\" ) ) ; errno = EFTYPE ; return - 1 ; } if ( cdf_read_property_info ( sst , h , CDF_TOLE4 ( sd -> sd_offset ) , <S2SV_StartBug> info , count , & maxcount ) == - 1 ) { <S2SV_EndBug> return - 1 ; <S2SV_StartBug> } <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { size_t <S2SV_ModEnd> maxcount ; const <S2SV_ModStart> -> si_count = CDF_TOLE4 <S2SV_ModEnd> ( si -> <S2SV_ModStart> = NULL ; if ( cdf_read_property_info ( sst , h , CDF_TOLE4 ( <S2SV_ModEnd> sd -> sd_offset <S2SV_ModStart> - 1 ) <S2SV_ModEnd> return - 1 <S2SV_ModStart> - 1 ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20461\n\n```\nCWE-125 static void core_anal_bytes ( RCore * core , const ut8 * buf , int len , int nops , int fmt ) { int stacksize = r_config_get_i ( core -> config , \"esil.stack.depth\" ) ; bool iotrap = r_config_get_i ( core -> config , \"esil.iotrap\" ) ; bool romem = r_config_get_i ( core -> config , \"esil.romem\" ) ; bool stats = r_config_get_i ( core -> config , \"esil.stats\" ) ; bool be = core -> print -> big_endian ; bool use_color = core -> print -> flags & R_PRINT_FLAGS_COLOR ; core -> parser -> relsub = r_config_get_i ( core -> config , \"asm.relsub\" ) ; int ret , i , j , idx , size ; const char * color = \"\" ; const char * esilstr ; const char * opexstr ; RAnalHint * hint ; RAnalEsil * esil = NULL ; RAsmOp asmop ; RAnalOp op = { 0 } ; ut64 addr ; bool isFirst = true ; unsigned int addrsize = r_config_get_i ( core -> config , \"esil.addr.size\" ) ; int totalsize = 0 ; if ( use_color ) { color = core -> cons -> pal . label ; } switch ( fmt ) { case 'j' : r_cons_printf ( \"[\" ) ; break ; case 'r' : esil = r_anal_esil_new ( stacksize , iotrap , addrsize ) ; if ( ! esil ) { return ; } r_anal_esil_to_reil_setup ( esil , core -> anal , romem , stats ) ; r_anal_esil_set_pc ( esil , core -> offset ) ; break ; } for ( i = idx = ret = 0 ; idx < len && ( ! nops || ( nops && i < nops ) ) ; i ++ , idx += ret ) { addr = core -> offset + idx ; hint = r_anal_hint_get ( core -> anal , addr ) ; r_asm_set_pc ( core -> assembler , addr ) ; ( void ) r_asm_disassemble ( core -> assembler , & asmop , buf + idx , len - idx ) ; ret = r_anal_op ( core -> anal , & op , core -> offset + idx , buf + idx , len - idx , R_ANAL_OP_MASK_ESIL ) ; esilstr = R_STRBUF_SAFEGET ( & op . esil ) ; opexstr = R_STRBUF_SAFEGET ( & op . opex ) ; char * mnem = strdup ( r_asm_op_get_asm ( & asmop ) ) ; char * sp = strchr ( mnem , '<S2SV_blank>' ) ; if ( sp ) { * sp = 0 ; if ( op . prefix ) { char * arg = strdup ( sp + 1 ) ; char * sp = strchr ( arg , '<S2SV_blank>' ) ; if ( sp ) { * sp = 0 ; } free ( mnem ) ; mnem = arg ; } } if ( ret < 1 && fmt != 'd' ) { eprintf ( \"Oops<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"<S2SV_blank>(\" , core -> offset + idx ) ; for ( i = idx , j = 0 ; i < core -> blocksize && j < 3 ; ++ i , ++ j ) { eprintf ( \"%02x<S2SV_blank>\" , buf [ i ] ) ; } eprintf ( \"...)\\\\n\" ) ; free ( mnem ) ; break ; } size = ( hint && hint -> size ) ? hint -> size : op . size ; if ( fmt == 'd' ) { char * opname = strdup ( r_asm_op_get_asm ( & asmop ) ) ; if ( opname ) { r_str_split ( opname , '<S2SV_blank>' ) ; char * d = r_asm_describe ( core -> assembler , opname ) ; if ( d && * d ) { r_cons_printf ( \"%s:<S2SV_blank>%s\\\\n\" , opname , d ) ; free ( d ) ; } else { eprintf ( \"Unknown<S2SV_blank>opcode\\\\n\" ) ; } free ( opname ) ; } } else if ( fmt == 'e' ) { if ( * esilstr ) { if ( use_color ) { r_cons_printf ( \"%s0x%\" PFMT64x Color_RESET \"<S2SV_blank>%s\\\\n\" , color , core -> offset + idx , esilstr ) ; } else { r_cons_printf ( \"0x%\" PFMT64x \"<S2SV_blank>%s\\\\n\" , core -> offset + idx , esilstr ) ; } } } else if ( fmt == 's' ) { totalsize += op . size ; } else if ( fmt == 'r' ) { if ( * esilstr ) { if ( use_color ) { r_cons_printf ( \"%s0x%\" PFMT64x Color_RESET \"\\\\n\" , color , core -> offset + idx ) ; } else { r_cons_printf ( \"0x%\" PFMT64x \"\\\\n\" , core -> offset + idx ) ; } r_anal_esil_parse ( esil , esilstr ) ; r_anal_esil_dumpstack ( esil ) ; r_anal_esil_stack_free ( esil ) ; } } else if ( fmt == 'j' ) { if ( isFirst ) { isFirst = false ; } else { r_cons_print ( \",\" ) ; } r_cons_printf ( \"{\\\\\"opcode\\\\\":\\\\\"%s\\\\\",\" , r_asm_op_get_asm ( & asmop ) ) ; { char strsub [ 128 ] = { 0 } ; r_parse_varsub ( core -> parser , NULL , core -> offset + idx , asmop . size , r_asm_op_get_asm ( & asmop ) , strsub , sizeof ( strsub ) ) ; { ut64 killme = UT64_MAX ; if ( r_io_read_i ( core -> io , op . ptr , & killme , op . refptr , be ) ) { core -> parser -> relsub_addr = killme ; } } char * p = strdup ( strsub ) ; if ( p ) { r_parse_filter ( core -> parser , addr , core -> flags , p , strsub , sizeof ( strsub ) , be ) ; free ( p ) ; } r_cons_printf ( \"\\\\\"disasm\\\\\":\\\\\"%s\\\\\",\" , strsub ) ; } r_cons_printf ( \"\\\\\"mnemonic\\\\\":\\\\\"%s\\\\\",\" , mnem ) ; if ( hint && hint -> opcode ) { r_cons_printf ( \"\\\\\"ophint\\\\\":\\\\\"%s\\\\\",\" , hint -> opcode ) ; } r_cons_printf ( \"\\\\\"sign\\\\\":%s,\" , r_str_bool ( op . sign ) ) ; r_cons_printf ( \"\\\\\"prefix\\\\\":%\" PFMT64u \",\" , op . prefix ) ; r_cons_printf ( \"\\\\\"id\\\\\":%d,\" , op . id ) ; if ( opexstr && * opexstr ) { r_cons_printf ( \"\\\\\"opex\\\\\":%s,\" , opexstr ) ; } r_cons_printf ( \"\\\\\"addr\\\\\":%\" PFMT64u \",\" , core -> offset + idx ) ; r_cons_printf ( \"\\\\\"bytes\\\\\":\\\\\"\" ) ; for ( j = 0 ; j < size ; j ++ ) { r_cons_printf ( \"%02x\" , buf [ j + idx ] ) ; } r_cons_printf ( \"\\\\\",\" ) ; if ( op . val != UT64_MAX ) { r_cons_printf ( \"\\\\\"val\\\\\":<S2SV_blank>%\" PFMT64u \",\" , op . val ) ; } if ( op . ptr != UT64_MAX ) { r_cons_printf ( \"\\\\\"ptr\\\\\":<S2SV_blank>%\" PFMT64u \",\" , op . ptr ) ; } r_cons_printf ( \"\\\\\"size\\\\\":<S2SV_blank>%d,\" , size ) ; r_cons_printf ( \"\\\\\"type\\\\\":<S2SV_blank>\\\\\"%s\\\\\",\" , r_anal_optype_to_string ( op . type ) ) ; if ( op . reg ) { r_cons_printf ( \"\\\\\"reg\\\\\":<S2SV_blank>\\\\\"%s\\\\\",\" , op . reg ) ; } if ( op . ireg ) { r_cons_printf ( \"\\\\\"ireg\\\\\":<S2SV_blank>\\\\\"%s\\\\\",\" , op . ireg ) ; } if ( op . scale ) { r_cons_printf ( \"\\\\\"scale\\\\\":%d,\" , op . scale ) ; } if ( hint && hint -> esil ) { r_cons_printf ( \"\\\\\"esil\\\\\":<S2SV_blank>\\\\\"%s\\\\\",\" , hint -> esil ) ; } else if ( * esilstr ) { r_cons_printf ( \"\\\\\"esil\\\\\":<S2SV_blank>\\\\\"%s\\\\\",\" , esilstr ) ; } if ( hint && hint -> jump != UT64_MAX ) { op . jump = hint -> jump ; } if ( op . jump != UT64_MAX ) { r_cons_printf ( \"\\\\\"jump\\\\\":%\" PFMT64u \",\" , op . jump ) ; } if ( hint && hint -> fail != UT64_MAX ) { op . fail = hint -> fail ; } if ( op . refptr != - 1 ) { r_cons_printf ( \"\\\\\"refptr\\\\\":%d,\" , op . refptr ) ; } if ( op . fail != UT64_MAX ) { r_cons_printf ( \"\\\\\"fail\\\\\":%\" PFMT64u \",\" , op . fail ) ; } r_cons_printf ( \"\\\\\"cycles\\\\\":%d,\" , op . cycles ) ; if ( op . failcycles ) { r_cons_printf ( \"\\\\\"failcycles\\\\\":%d,\" , op . failcycles ) ; } r_cons_printf ( \"\\\\\"delay\\\\\":%d,\" , op . delay ) ; { const char * p = r_anal_stackop_tostring ( op . stackop ) ; if ( p && * p && strcmp ( p , \"null\" ) ) r_cons_printf ( \"\\\\\"stack\\\\\":\\\\\"%s\\\\\",\" , p ) ; } if ( op . stackptr ) { r_cons_printf ( \"\\\\\"stackptr\\\\\":%d,\" , op . stackptr ) ; } { const char * arg = ( op . type & R_ANAL_OP_TYPE_COND ) ? r_anal_cond_tostring ( op . cond ) : NULL ; if ( arg ) { r_cons_printf ( \"\\\\\"cond\\\\\":\\\\\"%s\\\\\",\" , arg ) ; } } r_cons_printf ( \"\\\\\"family\\\\\":\\\\\"%s\\\\\"}\" , r_anal_op_family_to_string ( op . family ) ) ; } else { # define printline ( k , fmt , arg ) { if ( use_color ) r_cons_printf ( \"%s%s:<S2SV_blank>\" Color_RESET , color , k ) ; else r_cons_printf ( \"%s:<S2SV_blank>\" , k ) ; if ( fmt ) r_cons_printf ( fmt , arg ) ; } printline ( \"address\" , \"0x%\" PFMT64x \"\\\\n\" , core -> offset + idx ) ; printline ( \"opcode\" , \"%s\\\\n\" , r_asm_op_get_asm ( & asmop ) ) ; printline ( \"mnemonic\" , \"%s\\\\n\" , mnem ) ; if ( hint ) { if ( hint -> opcode ) { printline ( \"ophint\" , \"%s\\\\n\" , hint -> opcode ) ; } # if 0 if ( hint -> addr != UT64_MAX ) { printline ( \"addr\" , \"0x%08\" PFMT64x \"\\\\n\" , ( hint -> addr + idx ) ) ; } # endif } printline ( \"prefix\" , \"%\" PFMT64u \"\\\\n\" , op . prefix ) ; printline ( \"id\" , \"%d\\\\n\" , op . id ) ; # if 0 if ( opexstr && * opexstr ) { printline ( \"opex\" , \"%s\\\\n\" , opexstr ) ; } # endif printline ( \"bytes\" , NULL , 0 ) ; <S2SV_StartBug> for ( j = 0 ; j < size ; j ++ ) { <S2SV_EndBug> <S2SV_StartBug> r_cons_printf ( \"%02x\" , buf [ j + idx ] ) ; <S2SV_EndBug> } r_cons_newline ( ) ; <S2SV_StartBug> if ( op . val != UT64_MAX ) <S2SV_EndBug> printline ( \"val\" , \"0x%08\" PFMT64x \"\\\\n\" , op . val ) ; <S2SV_StartBug> if ( op . ptr != UT64_MAX ) <S2SV_EndBug> <S2SV_StartBug> printline ( \"ptr\" , \"0x%08\" PFMT64x \"\\\\n\" , op . ptr ) ; <S2SV_EndBug> <S2SV_StartBug> if ( op . refptr != - 1 ) <S2SV_EndBug> <S2SV_StartBug> printline ( \"refptr\" , \"%d\\\\n\" , op . refptr ) ; <S2SV_EndBug> printline ( \"size\" , \"%d\\\\n\" , size ) ; printline ( \"sign\" , \"%s\\\\n\" , r_str_bool ( op . sign ) ) ; printline ( \"type\" , \"%s\\\\n\" , r_anal_optype_to_string ( op . type ) ) ; printline ( \"cycles\" , \"%d\\\\n\" , op . cycles ) ; if ( op . failcycles ) { printline ( \"failcycles\" , \"%d\\\\n\" , op . failcycles ) ; } { const char * t2 = r_anal_optype_to_string ( op . type2 ) ; if ( t2 && strcmp ( t2 , \"null\" ) ) { printline ( \"type2\" , \"%s\\\\n\" , t2 ) ; } } if ( op . reg ) { printline ( \"reg\" , \"%s\\\\n\" , op . reg ) ; } if ( op . ireg ) { printline ( \"ireg\" , \"%s\\\\n\" , op . ireg ) ; } if ( op . scale ) { printline ( \"scale\" , \"%d\\\\n\" , op . scale ) ; } if ( hint && hint -> esil ) { printline ( \"esil\" , \"%s\\\\n\" , hint -> esil ) ; } else if ( * esilstr ) { printline ( \"esil\" , \"%s\\\\n\" , esilstr ) ; } if ( hint && hint -> jump != UT64_MAX ) { op . jump = hint -> jump ; } if ( op . jump != UT64_MAX ) { printline ( \"jump\" , \"0x%08\" PFMT64x \"\\\\n\" , op . jump ) ; } if ( op . direction != 0 ) { const char * dir = op . direction == 1 ? \"read\" : op . direction == 2 ? \"write\" : op . direction == 4 ? \"exec\" : op . direction == 8 ? \"ref\" : \"none\" ; printline ( \"direction\" , \"%s\\\\n\" , dir ) ; } if ( hint && hint -> fail != UT64_MAX ) { op . fail = hint -> fail ; } if ( op . fail != UT64_MAX ) { printline ( \"fail\" , \"0x%08\" PFMT64x \"\\\\n\" , op . fail ) ; } if ( op . delay ) { printline ( \"delay\" , \"%d\\\\n\" , op . delay ) ; } printline ( \"stack\" , \"%s\\\\n\" , r_anal_stackop_tostring ( op . stackop ) ) ; { const char * arg = ( op . type & R_ANAL_OP_TYPE_COND ) ? r_anal_cond_tostring ( op . cond ) : NULL ; if ( arg ) { printline ( \"cond\" , \"%s\\\\n\" , arg ) ; } } printline ( \"family\" , \"%s\\\\n\" , r_anal_op_family_to_string ( op . family ) ) ; printline ( \"stackop\" , \"%s\\\\n\" , r_anal_stackop_tostring ( op . stackop ) ) ; if ( op . stackptr ) { printline ( \"stackptr\" , \"%\" PFMT64u \"\\\\n\" , op . stackptr ) ; } } free ( mnem ) ; r_anal_hint_free ( hint ) ; r_anal_op_fini ( & op ) ; } r_anal_op_fini ( & op ) ; if ( fmt == 'j' ) { r_cons_printf ( \"]\" ) ; r_cons_newline ( ) ; } else if ( fmt == 's' ) { r_cons_printf ( \"%d\\\\n\" , totalsize ) ; } r_anal_esil_free ( esil ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; int minsz = R_MIN ( len , size ) ; minsz = R_MAX ( minsz , 0 ) ; <S2SV_ModStart> ; j < minsz <S2SV_ModEnd> ; j ++ <S2SV_ModStart> ++ ) { ut8 ch = ( ( j + idx - 1 ) > minsz ) ? 0xff : <S2SV_ModEnd> buf [ j <S2SV_ModStart> + idx ] ; r_cons_printf ( \"%02x\" , ch <S2SV_ModStart> != UT64_MAX ) { <S2SV_ModStart> val ) ; } <S2SV_ModStart> != UT64_MAX ) { <S2SV_ModStart> ptr ) ; } <S2SV_ModStart> - 1 ) { <S2SV_ModStart> refptr ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 int pidfile_write ( const char * pid_file , int pid ) { FILE * pidfile = NULL ; <S2SV_StartBug> int pidfd = creat ( pid_file , S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ) ; <S2SV_EndBug> if ( pidfd != - 1 ) pidfile = fdopen ( pidfd , \"w\" ) ; if ( ! pidfile ) { log_message ( LOG_INFO , \"pidfile_write<S2SV_blank>:<S2SV_blank>Cannot<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>pidfile\" , pid_file ) ; return 0 ; } fprintf ( pidfile , \"%d\\\\n\" , pid ) ; fclose ( pidfile ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int pidfd = open ( pid_file , O_NOFOLLOW | O_CREAT | O_WRONLY | O_TRUNC <S2SV_ModEnd> , S_IRUSR |\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10506\n\n```\nCWE-369 static OPJ_BOOL opj_pi_next_rpcl ( opj_pi_iterator_t * pi ) { opj_pi_comp_t * comp = NULL ; opj_pi_resolution_t * res = NULL ; OPJ_UINT32 index = 0 ; if ( ! pi -> first ) { goto LABEL_SKIP ; } else { OPJ_UINT32 compno , resno ; pi -> first = 0 ; pi -> dx = 0 ; pi -> dy = 0 ; for ( compno = 0 ; compno < pi -> numcomps ; compno ++ ) { comp = & pi -> comps [ compno ] ; for ( resno = 0 ; resno < comp -> numresolutions ; resno ++ ) { OPJ_UINT32 dx , dy ; res = & comp -> resolutions [ resno ] ; dx = comp -> dx * ( 1u << ( res -> pdx + comp -> numresolutions - 1 - resno ) ) ; dy = comp -> dy * ( 1u << ( res -> pdy + comp -> numresolutions - 1 - resno ) ) ; pi -> dx = ! pi -> dx ? dx : opj_uint_min ( pi -> dx , dx ) ; pi -> dy = ! pi -> dy ? dy : opj_uint_min ( pi -> dy , dy ) ; } } } if ( ! pi -> tp_on ) { pi -> poc . ty0 = pi -> ty0 ; pi -> poc . tx0 = pi -> tx0 ; pi -> poc . ty1 = pi -> ty1 ; pi -> poc . tx1 = pi -> tx1 ; } for ( pi -> resno = pi -> poc . resno0 ; pi -> resno < pi -> poc . resno1 ; pi -> resno ++ ) { for ( pi -> y = pi -> poc . ty0 ; pi -> y < pi -> poc . ty1 ; pi -> y += ( OPJ_INT32 ) ( pi -> dy - ( OPJ_UINT32 ) ( pi -> y % ( OPJ_INT32 ) pi -> dy ) ) ) { for ( pi -> x = pi -> poc . tx0 ; pi -> x < pi -> poc . tx1 ; pi -> x += ( OPJ_INT32 ) ( pi -> dx - ( OPJ_UINT32 ) ( pi -> x % ( OPJ_INT32 ) pi -> dx ) ) ) { for ( pi -> compno = pi -> poc . compno0 ; pi -> compno < pi -> poc . compno1 ; pi -> compno ++ ) { OPJ_UINT32 levelno ; OPJ_INT32 trx0 , try0 ; OPJ_INT32 trx1 , try1 ; OPJ_UINT32 rpx , rpy ; OPJ_INT32 prci , prcj ; comp = & pi -> comps [ pi -> compno ] ; if ( pi -> resno >= comp -> numresolutions ) { continue ; } res = & comp -> resolutions [ pi -> resno ] ; levelno = comp -> numresolutions - 1 - pi -> resno ; trx0 = opj_int_ceildiv ( pi -> tx0 , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) ; try0 = opj_int_ceildiv ( pi -> ty0 , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) ; trx1 = opj_int_ceildiv ( pi -> tx1 , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) ; try1 = opj_int_ceildiv ( pi -> ty1 , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) ; rpx = res -> pdx + levelno ; rpy = res -> pdy + levelno ; <S2SV_StartBug> if ( ! ( ( pi -> y % ( OPJ_INT32 ) ( comp -> dy << rpy ) == 0 ) || ( ( pi -> y == pi -> ty0 ) && <S2SV_EndBug> ( ( try0 << levelno ) % ( 1 << rpy ) ) ) ) ) { continue ; } if ( ! ( ( pi -> x % ( OPJ_INT32 ) ( comp -> dx << rpx ) == 0 ) || ( ( pi -> x == pi -> tx0 ) && ( ( trx0 << levelno ) % ( 1 << rpx ) ) ) ) ) { continue ; } if ( ( res -> pw == 0 ) || ( res -> ph == 0 ) ) { continue ; } if ( ( trx0 == trx1 ) || ( try0 == try1 ) ) { continue ; } prci = opj_int_floordivpow2 ( opj_int_ceildiv ( pi -> x , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) , ( OPJ_INT32 ) res -> pdx ) - opj_int_floordivpow2 ( trx0 , ( OPJ_INT32 ) res -> pdx ) ; prcj = opj_int_floordivpow2 ( opj_int_ceildiv ( pi -> y , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) , ( OPJ_INT32 ) res -> pdy ) - opj_int_floordivpow2 ( try0 , ( OPJ_INT32 ) res -> pdy ) ; pi -> precno = ( OPJ_UINT32 ) ( prci + prcj * ( OPJ_INT32 ) res -> pw ) ; for ( pi -> layno = pi -> poc . layno0 ; pi -> layno < pi -> poc . layno1 ; pi -> layno ++ ) { index = pi -> layno * pi -> step_l + pi -> resno * pi -> step_r + pi -> compno * pi -> step_c + pi -> precno * pi -> step_p ; if ( ! pi -> include [ index ] ) { pi -> include [ index ] = 1 ; return OPJ_TRUE ; } LABEL_SKIP : ; } } } } } return OPJ_FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( rpx >= 31 || ( ( comp -> dx << rpx ) >> rpx ) != comp -> dx || rpy >= 31 || ( ( comp -> dy << rpy ) >> rpy ) != comp -> dy ) { continue ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7472\n\n```\nCWE-404 long keyctl_set_reqkey_keyring ( int reqkey_defl ) { struct cred * new ; int ret , old_setting ; old_setting = current_cred_xxx ( jit_keyring ) ; if ( reqkey_defl == KEY_REQKEY_DEFL_NO_CHANGE ) return old_setting ; new = prepare_creds ( ) ; if ( ! new ) return - ENOMEM ; switch ( reqkey_defl ) { case KEY_REQKEY_DEFL_THREAD_KEYRING : ret = install_thread_keyring_to_cred ( new ) ; if ( ret < 0 ) goto error ; goto set ; case KEY_REQKEY_DEFL_PROCESS_KEYRING : ret = install_process_keyring_to_cred ( new ) ; <S2SV_StartBug> if ( ret < 0 ) { <S2SV_EndBug> if ( ret != - EEXIST ) goto error ; ret = 0 ; } goto set ; case KEY_REQKEY_DEFL_DEFAULT : case KEY_REQKEY_DEFL_SESSION_KEYRING : case KEY_REQKEY_DEFL_USER_KEYRING : case KEY_REQKEY_DEFL_USER_SESSION_KEYRING : case KEY_REQKEY_DEFL_REQUESTOR_KEYRING : goto set ; case KEY_REQKEY_DEFL_NO_CHANGE : case KEY_REQKEY_DEFL_GROUP_KEYRING : default : ret = - EINVAL ; goto error ; } set : new -> jit_keyring = reqkey_defl ; commit_creds ( new ) ; return old_setting ; error : abort_creds ( new ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) goto error ; <S2SV_ModEnd> goto set ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty ast_for_async_funcdef ( struct compiling * c , const node * n , asdl_seq * decorator_seq ) { REQ ( n , async_funcdef ) ; <S2SV_StartBug> REQ ( CHILD ( n , 0 ) , ASYNC ) ; <S2SV_EndBug> REQ ( CHILD ( n , 1 ) , funcdef ) ; <S2SV_StartBug> return ast_for_funcdef_impl ( c , CHILD ( n , 1 ) , decorator_seq , <S2SV_EndBug> <S2SV_StartBug> 1 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) , NAME ) ; assert ( strcmp ( STR ( CHILD ( n , 0 ) ) , \"async\" ) == 0 <S2SV_ModEnd> ) ; REQ <S2SV_ModStart> ( c , n <S2SV_ModEnd> , decorator_seq , <S2SV_ModStart> , decorator_seq , true <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0546\n\n```\nCWE-000 void print_arrays_for ( char * set ) { FILE * f ; <S2SV_StartBug> sprintf ( buf , \"%s.conf\" , set ) ; <S2SV_EndBug> if ( ( f = fopen ( buf , \"r\" ) ) == NULL ) { fprintf ( stderr , \"%s:<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>conf<S2SV_blank>file<S2SV_blank>for<S2SV_blank>charset<S2SV_blank>%s\\\\n\" , prog , set ) ; exit ( EXIT_FAILURE ) ; } <S2SV_StartBug> printf ( \"\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\\\n\\\\n\" , <S2SV_EndBug> set , prog ) ; print_array ( f , set , \"ctype\" , CTYPE_TABLE_SIZE ) ; print_array ( f , set , \"to_lower\" , TO_LOWER_TABLE_SIZE ) ; print_array ( f , set , \"to_upper\" , TO_UPPER_TABLE_SIZE ) ; print_array ( f , set , \"sort_order\" , SORT_ORDER_TABLE_SIZE ) ; printf ( \"\\\\n\" ) ; fclose ( f ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * f ; snprintf ( buf , sizeof ( buf ) <S2SV_ModEnd> , \"%s.conf\" , <S2SV_ModStart> } printf ( \"\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank>\\\\n\\\\n\" <S2SV_ModEnd> , set ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7895\n\n```\nCWE-119 int nfssvc_decode_writeargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd_writeargs * args ) { unsigned int len , hdr , dlen ; struct kvec * head = rqstp -> rq_arg . head ; int v ; p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; p ++ ; args -> offset = ntohl ( * p ++ ) ; p ++ ; len = args -> len = ntohl ( * p ++ ) ; if ( len > NFSSVC_MAXBLKSIZE_V2 ) return 0 ; <S2SV_StartBug> hdr = ( void * ) p - head -> iov_base ; <S2SV_EndBug> dlen = head -> iov_len + rqstp -> rq_arg . page_len - hdr ; if ( dlen < XDR_QUADLEN ( len ) * 4 ) return 0 ; rqstp -> rq_vec [ 0 ] . iov_base = ( void * ) p ; rqstp -> rq_vec [ 0 ] . iov_len = head -> iov_len - hdr ; v = 0 ; while ( len > rqstp -> rq_vec [ v ] . iov_len ) { len -= rqstp -> rq_vec [ v ] . iov_len ; v ++ ; rqstp -> rq_vec [ v ] . iov_base = page_address ( rqstp -> rq_pages [ v ] ) ; rqstp -> rq_vec [ v ] . iov_len = PAGE_SIZE ; } rqstp -> rq_vec [ v ] . iov_len = len ; args -> vlen = v + 1 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> head -> iov_base ; if ( hdr > head -> iov_len ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3905\n\n```\nCWE-119 int main ( int argc , char * argv [ ] ) { <S2SV_StartBug> char * p , * q , * r ; <S2SV_EndBug> Clp_Parser * clp = Clp_NewParser ( argc , ( const char * const * ) argv , sizeof ( options ) / sizeof ( options [ 0 ] ) , options ) ; program_name = Clp_ProgramName ( clp ) ; while ( 1 ) { int opt = Clp_Next ( clp ) ; switch ( opt ) { case BLOCK_LEN_OPT : blocklen = clp -> val . i ; break ; output_file : case OUTPUT_OPT : if ( ofp ) fatal_error ( \"output<S2SV_blank>file<S2SV_blank>already<S2SV_blank>specified\" ) ; if ( strcmp ( clp -> vstr , \"-\" ) == 0 ) ofp = stdout ; else if ( ! ( ofp = fopen ( clp -> vstr , \"w\" ) ) ) fatal_error ( \"%s:<S2SV_blank>%s\" , clp -> vstr , strerror ( errno ) ) ; break ; case PFB_OPT : pfb = 1 ; break ; case PFA_OPT : pfb = 0 ; break ; case HELP_OPT : usage ( ) ; exit ( 0 ) ; break ; case VERSION_OPT : printf ( \"t1asm<S2SV_blank>(LCDF<S2SV_blank>t1utils)<S2SV_blank>%s\\\\n\" , VERSION ) ; <S2SV_StartBug> printf ( \"Copyright<S2SV_blank>(C)<S2SV_blank>1992-2010<S2SV_blank>I.<S2SV_blank>Lee<S2SV_blank>Hetherington,<S2SV_blank>Eddie<S2SV_blank>Kohler<S2SV_blank>et<S2SV_blank>al.\\\\n\\\\\\n<S2SV_blank>This<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>see<S2SV_blank>the<S2SV_blank>source<S2SV_blank>for<S2SV_blank>copying<S2SV_blank>conditions.\\\\n\\\\\\n<S2SV_blank>There<S2SV_blank>is<S2SV_blank>NO<S2SV_blank>warranty,<S2SV_blank>not<S2SV_blank>even<S2SV_blank>for<S2SV_blank>merchantability<S2SV_blank>or<S2SV_blank>fitness<S2SV_blank>for<S2SV_blank>a\\\\n\\\\\\n<S2SV_blank>particular<S2SV_blank>purpose.\\\\n\" ) ; <S2SV_EndBug> exit ( 0 ) ; break ; case Clp_NotOption : if ( ifp && ofp ) fatal_error ( \"too<S2SV_blank>many<S2SV_blank>arguments\" ) ; else if ( ifp ) goto output_file ; if ( strcmp ( clp -> vstr , \"-\" ) == 0 ) ifp = stdin ; else if ( ! ( ifp = fopen ( clp -> vstr , \"r\" ) ) ) fatal_error ( \"%s:<S2SV_blank>%s\" , clp -> vstr , strerror ( errno ) ) ; break ; case Clp_Done : goto done ; case Clp_BadOption : short_usage ( ) ; exit ( 1 ) ; break ; } } done : if ( ! pfb ) { if ( blocklen == - 1 ) blocklen = 64 ; else if ( blocklen < 8 ) { blocklen = 8 ; error ( \"warning:<S2SV_blank>line<S2SV_blank>length<S2SV_blank>raised<S2SV_blank>to<S2SV_blank>%d\" , blocklen ) ; } else if ( blocklen > 1024 ) { blocklen = 1024 ; error ( \"warning:<S2SV_blank>line<S2SV_blank>length<S2SV_blank>lowered<S2SV_blank>to<S2SV_blank>%d\" , blocklen ) ; } } if ( ! ifp ) ifp = stdin ; if ( ! ofp ) ofp = stdout ; if ( pfb ) init_pfb_writer ( & w , blocklen , ofp ) ; # if defined ( _MSDOS ) || defined ( _WIN32 ) if ( pfb ) _setmode ( _fileno ( ofp ) , _O_BINARY ) ; # endif while ( ! feof ( ifp ) && ! ferror ( ifp ) ) { t1utils_getline ( ) ; if ( ! ever_active ) { <S2SV_StartBug> if ( strncmp ( line , \"currentfile<S2SV_blank>eexec\" , 17 ) == 0 && isspace ( line [ 17 ] ) ) { <S2SV_EndBug> <S2SV_StartBug> for ( p = line + 18 ; isspace ( * p ) ; p ++ ) <S2SV_EndBug> ; eexec_start ( p ) ; continue ; } else if ( strncmp ( line , \"/lenIV\" , 6 ) == 0 ) { <S2SV_StartBug> lenIV = atoi ( line + 6 ) ; <S2SV_EndBug> } else if ( ( p = strstr ( line , \"string<S2SV_blank>currentfile\" ) ) <S2SV_StartBug> && strstr ( line , \"readstring\" ) ) { <S2SV_EndBug> * p = '\\\\0' ; q = strrchr ( line , '/' ) ; if ( q ) { r = cs_start ; ++ q ; while ( ! isspace ( * q ) && * q != '{' ) * r ++ = * q ++ ; * r = '\\\\0' ; } * p = 's' ; } } if ( ! active ) { <S2SV_StartBug> if ( ( p = strstr ( line , \"/Subrs\" ) ) && isdigit ( p [ 7 ] ) ) <S2SV_EndBug> ever_active = active = 1 ; <S2SV_StartBug> else if ( ( p = strstr ( line , \"/CharStrings\" ) ) && isdigit ( p [ 13 ] ) ) <S2SV_EndBug> ever_active = active = 1 ; } if ( ( p = strstr ( line , \"currentfile<S2SV_blank>closefile\" ) ) ) { p += sizeof ( \"currentfile<S2SV_blank>closefile\" ) - 1 ; <S2SV_StartBug> for ( q = p ; isspace ( * q ) && * q != '\\\\n' ; q ++ ) <S2SV_EndBug> ; if ( q == p && ! * q ) error ( \"warning:<S2SV_blank>`currentfile<S2SV_blank>closefile\\'<S2SV_blank>line<S2SV_blank>too<S2SV_blank>long\" ) ; else if ( q != p ) { if ( * q != '\\\\n' ) error ( \"text<S2SV_blank>after<S2SV_blank>`currentfile<S2SV_blank>closefile\\'<S2SV_blank>ignored\" ) ; * p ++ = '\\\\n' ; * p ++ = '\\\\0' ; } eexec_string ( line ) ; break ; } eexec_string ( line ) ; if ( start_charstring ) { if ( ! cs_start [ 0 ] ) fatal_error ( \"couldn\\'t<S2SV_blank>find<S2SV_blank>charstring<S2SV_blank>start<S2SV_blank>command\" ) ; parse_charstring ( ) ; } } if ( in_eexec ) eexec_end ( ) ; while ( ! feof ( ifp ) && ! ferror ( ifp ) ) { t1utils_getline ( ) ; eexec_string ( line ) ; } if ( pfb ) pfb_writer_end ( & w ) ; if ( ! ever_active ) error ( \"warning:<S2SV_blank>no<S2SV_blank>charstrings<S2SV_blank>found<S2SV_blank>in<S2SV_blank>input<S2SV_blank>file\" ) ; fclose ( ifp ) ; fclose ( ofp ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * q <S2SV_ModEnd> ; Clp_Parser * <S2SV_ModStart> ; printf ( \"Copyright<S2SV_blank>(C)<S2SV_blank>1992-2010<S2SV_blank>I.<S2SV_blank>Lee<S2SV_blank>Hetherington,<S2SV_blank>Eddie<S2SV_blank>Kohler<S2SV_blank>et<S2SV_blank>al.\\\\n\\\\\\nThis<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>see<S2SV_blank>the<S2SV_blank>source<S2SV_blank>for<S2SV_blank>copying<S2SV_blank>conditions.\\\\n\\\\\\nThere<S2SV_blank>is<S2SV_blank>NO<S2SV_blank>warranty,<S2SV_blank>not<S2SV_blank>even<S2SV_blank>for<S2SV_blank>merchantability<S2SV_blank>or<S2SV_blank>fitness<S2SV_blank>for<S2SV_blank>a\\\\n\\\\\\nparticular<S2SV_blank>purpose.\\\\n\" <S2SV_ModEnd> ) ; exit <S2SV_ModStart> && isspace ( ( unsigned char ) <S2SV_ModStart> ; isspace ( ( unsigned char ) <S2SV_ModStart> 0 ) { set_lenIV ( line <S2SV_ModEnd> ) ; } <S2SV_ModStart> \"string<S2SV_blank>currentfile\" ) ) ) { set_cs_start ( line ) <S2SV_ModEnd> ; } } <S2SV_ModStart> && isdigit ( ( unsigned char ) <S2SV_ModStart> && isdigit ( ( unsigned char ) <S2SV_ModStart> ; isspace ( ( unsigned char )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18839\n\n```\nCWE-200 inline int web_client_api_request_v1_data ( RRDHOST * host , struct web_client * w , char * url ) { debug ( D_WEB_CLIENT , \"%llu:<S2SV_blank>API<S2SV_blank>v1<S2SV_blank>data<S2SV_blank>with<S2SV_blank>URL<S2SV_blank>\\'%s\\'\" , w -> id , url ) ; int ret = 400 ; BUFFER * dimensions = NULL ; buffer_flush ( w -> response . data ) ; char * google_version = \"0.6\" , * google_reqId = \"0\" , * google_sig = \"0\" , * google_out = \"json\" , * responseHandler = NULL , * outFileName = NULL ; time_t last_timestamp_in_data = 0 , google_timestamp = 0 ; char * chart = NULL , * before_str = NULL , * after_str = NULL , * group_time_str = NULL , * points_str = NULL ; int group = RRDR_GROUPING_AVERAGE ; uint32_t format = DATASOURCE_JSON ; uint32_t options = 0x00000000 ; while ( url ) { char * value = mystrsep ( & url , \"?&\" ) ; if ( ! value || ! * value ) continue ; char * name = mystrsep ( & value , \"=\" ) ; if ( ! name || ! * name ) continue ; if ( ! value || ! * value ) continue ; debug ( D_WEB_CLIENT , \"%llu:<S2SV_blank>API<S2SV_blank>v1<S2SV_blank>data<S2SV_blank>query<S2SV_blank>param<S2SV_blank>\\'%s\\'<S2SV_blank>with<S2SV_blank>value<S2SV_blank>\\'%s\\'\" , w -> id , name , value ) ; if ( ! strcmp ( name , \"chart\" ) ) chart = value ; else if ( ! strcmp ( name , \"dimension\" ) || ! strcmp ( name , \"dim\" ) || ! strcmp ( name , \"dimensions\" ) || ! strcmp ( name , \"dims\" ) ) { if ( ! dimensions ) dimensions = buffer_create ( 100 ) ; buffer_strcat ( dimensions , \"|\" ) ; buffer_strcat ( dimensions , value ) ; } else if ( ! strcmp ( name , \"after\" ) ) after_str = value ; else if ( ! strcmp ( name , \"before\" ) ) before_str = value ; else if ( ! strcmp ( name , \"points\" ) ) points_str = value ; else if ( ! strcmp ( name , \"gtime\" ) ) group_time_str = value ; else if ( ! strcmp ( name , \"group\" ) ) { group = web_client_api_request_v1_data_group ( value , RRDR_GROUPING_AVERAGE ) ; } else if ( ! strcmp ( name , \"format\" ) ) { format = web_client_api_request_v1_data_format ( value ) ; } else if ( ! strcmp ( name , \"options\" ) ) { options |= web_client_api_request_v1_data_options ( value ) ; } else if ( ! strcmp ( name , \"callback\" ) ) { responseHandler = value ; } else if ( ! strcmp ( name , \"filename\" ) ) { outFileName = value ; } else if ( ! strcmp ( name , \"tqx\" ) ) { char * tqx_name , * tqx_value ; while ( value ) { tqx_value = mystrsep ( & value , \";\" ) ; if ( ! tqx_value || ! * tqx_value ) continue ; tqx_name = mystrsep ( & tqx_value , \":\" ) ; if ( ! tqx_name || ! * tqx_name ) continue ; if ( ! tqx_value || ! * tqx_value ) continue ; if ( ! strcmp ( tqx_name , \"version\" ) ) google_version = tqx_value ; else if ( ! strcmp ( tqx_name , \"reqId\" ) ) google_reqId = tqx_value ; else if ( ! strcmp ( tqx_name , \"sig\" ) ) { google_sig = tqx_value ; google_timestamp = strtoul ( google_sig , NULL , 0 ) ; } else if ( ! strcmp ( tqx_name , \"out\" ) ) { google_out = tqx_value ; format = web_client_api_request_v1_data_google_format ( google_out ) ; } else if ( ! strcmp ( tqx_name , \"responseHandler\" ) ) responseHandler = tqx_value ; else if ( ! strcmp ( tqx_name , \"outFileName\" ) ) outFileName = tqx_value ; } } } <S2SV_StartBug> if ( ! chart || ! * chart ) { <S2SV_EndBug> buffer_sprintf ( w -> response . data , \"No<S2SV_blank>chart<S2SV_blank>id<S2SV_blank>is<S2SV_blank>given<S2SV_blank>at<S2SV_blank>the<S2SV_blank>request.\" ) ; goto cleanup ; } RRDSET * st = rrdset_find ( host , chart ) ; if ( ! st ) st = rrdset_find_byname ( host , chart ) ; if ( ! st ) { buffer_strcat ( w -> response . data , \"Chart<S2SV_blank>is<S2SV_blank>not<S2SV_blank>found:<S2SV_blank>\" ) ; buffer_strcat_htmlescape ( w -> response . data , chart ) ; ret = 404 ; goto cleanup ; } st -> last_accessed_time = now_realtime_sec ( ) ; long long before = ( before_str && * before_str ) ? str2l ( before_str ) : 0 ; long long after = ( after_str && * after_str ) ? str2l ( after_str ) : 0 ; int points = ( points_str && * points_str ) ? str2i ( points_str ) : 0 ; long group_time = ( group_time_str && * group_time_str ) ? str2l ( group_time_str ) : 0 ; debug ( D_WEB_CLIENT , \"%llu:<S2SV_blank>API<S2SV_blank>command<S2SV_blank>\\'data\\'<S2SV_blank>for<S2SV_blank>chart<S2SV_blank>\\'%s\\',<S2SV_blank>dimensions<S2SV_blank>\\'%s\\',<S2SV_blank>after<S2SV_blank>\\'%lld\\',<S2SV_blank>before<S2SV_blank>\\'%lld\\',<S2SV_blank>points<S2SV_blank>\\'%d\\',<S2SV_blank>group<S2SV_blank>\\'%d\\',<S2SV_blank>format<S2SV_blank>\\'%u\\',<S2SV_blank>options<S2SV_blank>\\'0x%08x\\'\" , w -> id , chart , ( dimensions ) ? buffer_tostring ( dimensions ) : \"\" , after , before , points , group , format , options ) ; if ( outFileName && * outFileName ) { buffer_sprintf ( w -> response . header , \"Content-Disposition:<S2SV_blank>attachment;<S2SV_blank>filename=\\\\\"%s\\\\\"\\\\r\\\\n\" , outFileName ) ; debug ( D_WEB_CLIENT , \"%llu:<S2SV_blank>generating<S2SV_blank>outfilename<S2SV_blank>header:<S2SV_blank>\\'%s\\'\" , w -> id , outFileName ) ; } if ( format == DATASOURCE_DATATABLE_JSONP ) { if ( responseHandler == NULL ) responseHandler = \"google.visualization.Query.setResponse\" ; debug ( D_WEB_CLIENT_ACCESS , \"%llu:<S2SV_blank>GOOGLE<S2SV_blank>JSON/JSONP:<S2SV_blank>version<S2SV_blank>=<S2SV_blank>\\'%s\\',<S2SV_blank>reqId<S2SV_blank>=<S2SV_blank>\\'%s\\',<S2SV_blank>sig<S2SV_blank>=<S2SV_blank>\\'%s\\',<S2SV_blank>out<S2SV_blank>=<S2SV_blank>\\'%s\\',<S2SV_blank>responseHandler<S2SV_blank>=<S2SV_blank>\\'%s\\',<S2SV_blank>outFileName<S2SV_blank>=<S2SV_blank>\\'%s\\'\" , w -> id , google_version , google_reqId , google_sig , google_out , responseHandler , outFileName ) ; buffer_sprintf ( w -> response . data , \"%s({version:\\'%s\\',reqId:\\'%s\\',status:\\'ok\\',sig:\\'%ld\\',table:\" , responseHandler , google_version , google_reqId , st -> last_updated . tv_sec ) ; } else if ( format == DATASOURCE_JSONP ) { if ( responseHandler == NULL ) responseHandler = \"callback\" ; buffer_strcat ( w -> response . data , responseHandler ) ; buffer_strcat ( w -> response . data , \"(\" ) ; } ret = rrdset2anything_api_v1 ( st , w -> response . data , dimensions , format , points , after , before , group , group_time , options , & last_timestamp_in_data ) ; if ( format == DATASOURCE_DATATABLE_JSONP ) { if ( google_timestamp < last_timestamp_in_data ) buffer_strcat ( w -> response . data , \"});\" ) ; else { buffer_flush ( w -> response . data ) ; buffer_sprintf ( w -> response . data , \"%s({version:\\'%s\\',reqId:\\'%s\\',status:\\'error\\',errors:[{reason:\\'not_modified\\',message:\\'Data<S2SV_blank>not<S2SV_blank>modified\\'}]});\" , responseHandler , google_version , google_reqId ) ; } } else if ( format == DATASOURCE_JSONP ) buffer_strcat ( w -> response . data , \");\" ) ; cleanup : buffer_free ( dimensions ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } } } fix_google_param ( google_out ) ; fix_google_param ( google_sig ) ; fix_google_param ( google_reqId ) ; fix_google_param ( google_version ) ; fix_google_param ( responseHandler ) ; fix_google_param ( outFileName ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16718\n\n```\nCWE-78 static int r_core_cmd_subst_i ( RCore * core , char * cmd , char * colon , bool * tmpseek ) { RList * tmpenvs = r_list_newf ( tmpenvs_free ) ; const char * quotestr = \"`\" ; const char * tick = NULL ; char * ptr , * ptr2 , * str ; char * arroba = NULL ; char * grep = NULL ; RIODesc * tmpdesc = NULL ; int pamode = ! core -> io -> va ; int i , ret = 0 , pipefd ; bool usemyblock = false ; int scr_html = - 1 ; int scr_color = - 1 ; bool eos = false ; bool haveQuote = false ; bool oldfixedarch = core -> fixedarch ; bool oldfixedbits = core -> fixedbits ; bool cmd_tmpseek = false ; ut64 tmpbsz = core -> blocksize ; int cmd_ignbithints = - 1 ; if ( ! cmd ) { r_list_free ( tmpenvs ) ; return 0 ; } cmd = r_str_trim_head_tail ( cmd ) ; char * $0 = strstr ( cmd , \"$(\" ) ; if ( $0 ) { char * $1 = strchr ( $0 + 2 , ')' ) ; if ( $1 ) { * $0 = '`' ; * $1 = '`' ; memmove ( $0 + 1 , $0 + 2 , strlen ( $0 + 2 ) + 1 ) ; } else { eprintf ( \"Unterminated<S2SV_blank>$()<S2SV_blank>block\\\\n\" ) ; } } switch ( * cmd ) { case '.' : if ( cmd [ 1 ] == \\'\"\\' ) { r_list_free ( tmpenvs ) ; return r_cmd_call ( core -> rcmd , cmd ) ; } break ; case \\'\"\\' : for ( ; * cmd ; ) { int pipefd = - 1 ; ut64 oseek = UT64_MAX ; char * line , * p ; haveQuote = * cmd == \\'\"\\' ; if ( haveQuote ) { cmd ++ ; p = * cmd ? find_eoq ( cmd ) : NULL ; if ( ! p || ! * p ) { eprintf ( \"Missing<S2SV_blank>\\\\\"<S2SV_blank>in<S2SV_blank>(%s).\" , cmd ) ; r_list_free ( tmpenvs ) ; return false ; } * p ++ = 0 ; if ( ! * p ) { eos = true ; } } else { char * sc = strchr ( cmd , ';' ) ; if ( sc ) { * sc = 0 ; } r_core_cmd0 ( core , cmd ) ; if ( ! sc ) { break ; } cmd = sc + 1 ; continue ; } <S2SV_StartBug> if ( * p ) { <S2SV_EndBug> if ( p [ 0 ] == '@' ) { p -- ; } while ( p [ 1 ] == ';' || IS_WHITESPACE ( p [ 1 ] ) ) { p ++ ; } if ( p [ 1 ] == '@' || ( p [ 1 ] && p [ 2 ] == '@' ) ) { char * q = strchr ( p + 1 , \\'\"\\' ) ; if ( q ) { <S2SV_StartBug> * q = 0 ; <S2SV_EndBug> } haveQuote = q != NULL ; oseek = core -> offset ; r_core_seek ( core , r_num_math ( core -> num , p + 2 ) , 1 ) ; if ( q ) { * p = \\'\"\\' ; p = q ; } else { p = strchr ( p + 1 , ';' ) ; } } if ( p && * p && p [ 1 ] == '>' ) { str = p + 2 ; while ( * str == '>' ) { str ++ ; } str = ( char * ) r_str_trim_ro ( str ) ; r_cons_flush ( ) ; const bool append = p [ 2 ] == '>' ; pipefd = r_cons_pipe_open ( str , 1 , append ) ; } } line = strdup ( cmd ) ; line = r_str_replace ( line , \"\\\\\\\\\\\\\"\" , \"\\\\\"\" , true ) ; if ( p && * p && p [ 1 ] == '|' ) { str = p + 2 ; while ( IS_WHITESPACE ( * str ) ) { str ++ ; } r_core_cmd_pipe ( core , cmd , str ) ; } else { r_cmd_call ( core -> rcmd , line ) ; } free ( line ) ; if ( oseek != UT64_MAX ) { r_core_seek ( core , oseek , 1 ) ; } if ( pipefd != - 1 ) { r_cons_flush ( ) ; r_cons_pipe_close ( pipefd ) ; } if ( ! p ) { break ; } if ( eos ) { break ; } if ( haveQuote ) { if ( * p == ';' ) { cmd = p + 1 ; } else { if ( * p == \\'\"\\' ) { <S2SV_StartBug> cmd = p + 1 ; <S2SV_EndBug> } else { <S2SV_StartBug> * p = \\'\"\\' ; <S2SV_EndBug> cmd = p ; } } } else { cmd = p + 1 ; } } r_list_free ( tmpenvs ) ; return true ; case '(' : if ( cmd [ 1 ] != '*' && ! strstr ( cmd , \")()\" ) ) { r_list_free ( tmpenvs ) ; return r_cmd_call ( core -> rcmd , cmd ) ; } break ; case '?' : if ( cmd [ 1 ] == '>' ) { r_core_cmd_help ( core , help_msg_greater_sign ) ; r_list_free ( tmpenvs ) ; return true ; } } if ( * cmd != '#' ) { ptr = ( char * ) r_str_firstbut ( cmd , '#' , \"`\\\\\"\" ) ; if ( ptr && ( ptr [ 1 ] == '<S2SV_blank>' || ptr [ 1 ] == '\\\\t' ) ) { * ptr = '\\\\0' ; } } if ( * cmd != '#' ) { ptr = ( char * ) r_str_lastbut ( cmd , ';' , quotestr ) ; if ( colon && ptr ) { int ret ; * ptr = '\\\\0' ; if ( r_core_cmd_subst ( core , cmd ) == - 1 ) { r_list_free ( tmpenvs ) ; return - 1 ; } cmd = ptr + 1 ; ret = r_core_cmd_subst ( core , cmd ) ; * ptr = ';' ; r_list_free ( tmpenvs ) ; return ret ; } } ptr = ( char * ) r_str_lastbut ( cmd , '|' , quotestr ) ; if ( ptr ) { if ( ptr > cmd ) { char * ch = ptr - 1 ; if ( * ch == '\\\\\\\\' ) { memmove ( ch , ptr , strlen ( ptr ) + 1 ) ; goto escape_pipe ; } } char * ptr2 = strchr ( cmd , '`' ) ; if ( ! ptr2 || ( ptr2 && ptr2 > ptr ) ) { if ( ! tick || ( tick && tick > ptr ) ) { * ptr = '\\\\0' ; cmd = r_str_trim_nc ( cmd ) ; if ( ! strcmp ( ptr + 1 , \"?\" ) ) { r_core_cmd_help ( core , help_msg_vertical_bar ) ; r_list_free ( tmpenvs ) ; return ret ; } else if ( ! strncmp ( ptr + 1 , \"H\" , 1 ) ) { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , true ) ; } else if ( ! strcmp ( ptr + 1 , \"T\" ) ) { scr_color = r_config_get_i ( core -> config , \"scr.color\" ) ; r_config_set_i ( core -> config , \"scr.color\" , COLOR_MODE_DISABLED ) ; core -> cons -> use_tts = true ; } else if ( ! strcmp ( ptr + 1 , \".\" ) ) { ret = * cmd ? r_core_cmdf ( core , \".%s\" , cmd ) : 0 ; r_list_free ( tmpenvs ) ; return ret ; } else if ( ptr [ 1 ] ) { int value = core -> num -> value ; if ( * cmd ) { r_core_cmd_pipe ( core , cmd , ptr + 1 ) ; } else { char * res = r_io_system ( core -> io , ptr + 1 ) ; if ( res ) { r_cons_printf ( \"%s\\\\n\" , res ) ; free ( res ) ; } } core -> num -> value = value ; r_list_free ( tmpenvs ) ; return 0 ; } else { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , 0 ) ; scr_color = r_config_get_i ( core -> config , \"scr.color\" ) ; r_config_set_i ( core -> config , \"scr.color\" , COLOR_MODE_DISABLED ) ; } } } } escape_pipe : ptr = ( char * ) r_str_lastbut ( cmd , '&' , quotestr ) ; while ( ptr && * ptr && ptr [ 1 ] == '&' ) { * ptr = '\\\\0' ; ret = r_cmd_call ( core -> rcmd , cmd ) ; if ( ret == - 1 ) { eprintf ( \"command<S2SV_blank>error(%s)\\\\n\" , cmd ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } r_list_free ( tmpenvs ) ; return ret ; } for ( cmd = ptr + 2 ; cmd && * cmd == '<S2SV_blank>' ; cmd ++ ) { ; } ptr = strchr ( cmd , '&' ) ; } R_FREE ( core -> oobi ) ; ptr = strstr ( cmd , \"?*\" ) ; if ( ptr && ( ptr == cmd || ptr [ - 1 ] != '~' ) ) { ptr [ 0 ] = 0 ; if ( * cmd != '#' ) { int detail = 0 ; if ( cmd < ptr && ptr [ - 1 ] == '?' ) { detail ++ ; if ( cmd < ptr - 1 && ptr [ - 2 ] == '?' ) { detail ++ ; } } r_cons_break_push ( NULL , NULL ) ; recursive_help ( core , detail , cmd ) ; r_cons_break_pop ( ) ; r_cons_grep_parsecmd ( ptr + 2 , \"`\" ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } r_list_free ( tmpenvs ) ; return 0 ; } } # if 0 ptr = strchr ( cmd , '<' ) ; if ( ptr ) { ptr [ 0 ] = '\\\\0' ; if ( r_cons_singleton ( ) -> is_interactive ) { if ( ptr [ 1 ] == '<' ) { for ( str = ptr + 2 ; str [ 0 ] == '<S2SV_blank>' ; str ++ ) { } eprintf ( \"==><S2SV_blank>Reading<S2SV_blank>from<S2SV_blank>stdin<S2SV_blank>until<S2SV_blank>\\'%s\\'\\\\n\" , str ) ; free ( core -> oobi ) ; core -> oobi = malloc ( 1 ) ; if ( core -> oobi ) { core -> oobi [ 0 ] = '\\\\0' ; } core -> oobi_len = 0 ; for ( ; ; ) { char buf [ 1024 ] ; int ret ; write ( 1 , \"><S2SV_blank>\" , 2 ) ; fgets ( buf , sizeof ( buf ) - 1 , stdin ) ; if ( feof ( stdin ) ) { break ; } if ( * buf ) buf [ strlen ( buf ) - 1 ] = '\\\\0' ; ret = strlen ( buf ) ; core -> oobi_len += ret ; core -> oobi = realloc ( core -> oobi , core -> oobi_len + 1 ) ; if ( core -> oobi ) { if ( ! strcmp ( buf , str ) ) { break ; } strcat ( ( char * ) core -> oobi , buf ) ; } } } else { for ( str = ptr + 1 ; * str == '<S2SV_blank>' ; str ++ ) { } if ( ! * str ) { goto next ; } eprintf ( \"Slurping<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , str ) ; free ( core -> oobi ) ; core -> oobi = ( ut8 * ) r_file_slurp ( str , & core -> oobi_len ) ; if ( ! core -> oobi ) { eprintf ( \"cannot<S2SV_blank>open<S2SV_blank>file\\\\n\" ) ; } else if ( ptr == cmd ) { return r_core_cmd_buffer ( core , ( const char * ) core -> oobi ) ; } } } else { eprintf ( \"Cannot<S2SV_blank>slurp<S2SV_blank>with<S2SV_blank><<<S2SV_blank>in<S2SV_blank>non-interactive<S2SV_blank>mode\\\\n\" ) ; r_list_free ( tmpenvs ) ; return 0 ; } } next : # endif ptr = ( char * ) r_str_firstbut ( cmd , '>' , \"\\\\\"\" ) ; if ( ptr ) { if ( ptr > cmd ) { char * ch = ptr - 1 ; if ( * ch == '\\\\\\\\' ) { memmove ( ch , ptr , strlen ( ptr ) + 1 ) ; goto escape_redir ; } } if ( ptr [ 0 ] && ptr [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_greater_sign ) ; r_list_free ( tmpenvs ) ; return true ; } int fdn = 1 ; int pipecolor = r_config_get_i ( core -> config , \"scr.color.pipe\" ) ; int use_editor = false ; int ocolor = r_config_get_i ( core -> config , \"scr.color\" ) ; * ptr = '\\\\0' ; str = r_str_trim_head_tail ( ptr + 1 + ( ptr [ 1 ] == '>' ) ) ; if ( ! * str ) { eprintf ( \"No<S2SV_blank>output?\\\\n\" ) ; goto next2 ; } if ( ptr > ( cmd + 1 ) && IS_WHITECHAR ( ptr [ - 2 ] ) ) { char * fdnum = ptr - 1 ; if ( * fdnum == 'H' ) { scr_html = r_config_get_i ( core -> config , \"scr.html\" ) ; r_config_set_i ( core -> config , \"scr.html\" , true ) ; pipecolor = true ; * fdnum = 0 ; } else { if ( IS_DIGIT ( * fdnum ) ) { fdn = * fdnum - '0' ; } * fdnum = 0 ; } } r_cons_set_interactive ( false ) ; if ( ! strcmp ( str , \"-\" ) ) { use_editor = true ; str = r_file_temp ( \"dumpedit\" ) ; r_config_set_i ( core -> config , \"scr.color\" , COLOR_MODE_DISABLED ) ; } const bool appendResult = ( ptr [ 1 ] == '>' ) ; if ( * str == '$' ) { char * o = r_core_cmd_str ( core , cmd ) ; if ( appendResult ) { char * oldText = r_cmd_alias_get ( core -> rcmd , str , 1 ) ; if ( oldText ) { char * two = r_str_newf ( \"%s%s\" , oldText , o ) ; if ( two ) { r_cmd_alias_set ( core -> rcmd , str , two , 1 ) ; free ( two ) ; } } else { char * n = r_str_newf ( \"$%s\" , o ) ; r_cmd_alias_set ( core -> rcmd , str , n , 1 ) ; free ( n ) ; } } else { char * n = r_str_newf ( \"$%s\" , o ) ; r_cmd_alias_set ( core -> rcmd , str , n , 1 ) ; free ( n ) ; } ret = 0 ; free ( o ) ; } else if ( fdn > 0 ) { pipefd = r_cons_pipe_open ( str , fdn , appendResult ) ; if ( pipefd != - 1 ) { if ( ! pipecolor ) { r_config_set_i ( core -> config , \"scr.color\" , COLOR_MODE_DISABLED ) ; } ret = r_core_cmd_subst ( core , cmd ) ; r_cons_flush ( ) ; r_cons_pipe_close ( pipefd ) ; } } r_cons_set_last_interactive ( ) ; if ( ! pipecolor ) { r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; } if ( use_editor ) { const char * editor = r_config_get ( core -> config , \"cfg.editor\" ) ; if ( editor && * editor ) { r_sys_cmdf ( \"%s<S2SV_blank>\\'%s\\'\" , editor , str ) ; r_file_rm ( str ) ; } else { eprintf ( \"No<S2SV_blank>cfg.editor<S2SV_blank>configured\\\\n\" ) ; } r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; free ( str ) ; } if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } core -> cons -> use_tts = false ; r_list_free ( tmpenvs ) ; return ret ; } escape_redir : next2 : ptr = strchr ( cmd , '`' ) ; if ( ptr ) { if ( ptr > cmd ) { char * ch = ptr - 1 ; if ( * ch == '\\\\\\\\' ) { memmove ( ch , ptr , strlen ( ptr ) + 1 ) ; goto escape_backtick ; } } bool empty = false ; int oneline = 1 ; if ( ptr [ 1 ] == '`' ) { memmove ( ptr , ptr + 1 , strlen ( ptr ) ) ; oneline = 0 ; empty = true ; } ptr2 = strchr ( ptr + 1 , '`' ) ; if ( empty ) { } else if ( ! ptr2 ) { eprintf ( \"parse:<S2SV_blank>Missing<S2SV_blank>backtick<S2SV_blank>in<S2SV_blank>expression.\\\\n\" ) ; goto fail ; } else { int value = core -> num -> value ; * ptr = '\\\\0' ; * ptr2 = '\\\\0' ; if ( ptr [ 1 ] == '!' ) { str = r_core_cmd_str_pipe ( core , ptr + 1 ) ; } else { int ocolor = r_config_get_i ( core -> config , \"scr.color\" ) ; r_config_set_i ( core -> config , \"scr.color\" , 0 ) ; core -> cmd_in_backticks = true ; str = r_core_cmd_str ( core , ptr + 1 ) ; core -> cmd_in_backticks = false ; r_config_set_i ( core -> config , \"scr.color\" , ocolor ) ; } if ( ! str ) { goto fail ; } if ( * str == '|' || * str == '*' ) { eprintf ( \"r_core_cmd_subst_i:<S2SV_blank>invalid<S2SV_blank>backticked<S2SV_blank>command\\\\n\" ) ; free ( str ) ; goto fail ; } if ( oneline && str ) { for ( i = 0 ; str [ i ] ; i ++ ) { if ( str [ i ] == '\\\\n' ) { str [ i ] = '<S2SV_blank>' ; } } } str = r_str_append ( str , ptr2 + 1 ) ; cmd = r_str_append ( strdup ( cmd ) , str ) ; core -> num -> value = value ; ret = r_core_cmd_subst ( core , cmd ) ; free ( cmd ) ; if ( scr_html != - 1 ) { r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } free ( str ) ; r_list_free ( tmpenvs ) ; return ret ; } } escape_backtick : if ( * cmd != \\'\"\\' && * cmd ) { const char * s = strstr ( cmd , \"~?\" ) ; if ( s ) { bool showHelp = false ; if ( cmd == s ) { showHelp = true ; } else { if ( ! strcmp ( s , \"~??\" ) ) { showHelp = true ; } } if ( showHelp ) { r_cons_grep_help ( ) ; r_list_free ( tmpenvs ) ; return true ; } } } if ( * cmd != '.' ) { grep = r_cons_grep_strip ( cmd , quotestr ) ; } if ( * cmd != \\'\"\\' ) { ptr = strchr ( cmd , '@' ) ; if ( ptr == cmd + 1 && * cmd == '?' ) { ptr = NULL ; } } else { ptr = NULL ; } cmd_tmpseek = core -> tmpseek = ptr ? true : false ; int rc = 0 ; if ( ptr ) { char * f , * ptr2 = strchr ( ptr + 1 , '!' ) ; ut64 addr = core -> offset ; bool addr_is_set = false ; char * tmpbits = NULL ; const char * offstr = NULL ; bool is_bits_set = false ; bool is_arch_set = false ; char * tmpeval = NULL ; char * tmpasm = NULL ; bool flgspc_changed = false ; int tmpfd = - 1 ; int sz , len ; ut8 * buf ; * ptr ++ = '\\\\0' ; repeat_arroba : arroba = ( ptr [ 0 ] && ptr [ 1 ] && ptr [ 2 ] ) ? strchr ( ptr + 2 , '@' ) : NULL ; if ( arroba ) { * arroba = 0 ; } for ( ; * ptr == '<S2SV_blank>' ; ptr ++ ) { } if ( * ptr && ptr [ 1 ] == ':' ) { } else { ptr -- ; } ptr = r_str_trim_tail ( ptr ) ; if ( ptr [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_at ) ; } else if ( ptr [ 1 ] == '%' ) { char * k = strdup ( ptr + 2 ) ; char * v = strchr ( k , '=' ) ; if ( v ) { * v ++ = 0 ; r_sys_setenv ( k , v ) ; r_list_append ( tmpenvs , k ) ; } else { free ( k ) ; } } else if ( ptr [ 1 ] == '.' ) { if ( ptr [ 2 ] == '.' ) { if ( ptr [ 3 ] == '.' ) { ut64 addr = r_num_tail ( core -> num , core -> offset , ptr + 4 ) ; r_core_block_size ( core , R_ABS ( ( st64 ) addr - ( st64 ) core -> offset ) ) ; goto fuji ; } else { addr = r_num_tail ( core -> num , core -> offset , ptr + 3 ) ; r_core_seek ( core , addr , 1 ) ; cmd_tmpseek = core -> tmpseek = true ; goto fuji ; } } else { eprintf ( \"TODO:<S2SV_blank>what<S2SV_blank>do<S2SV_blank>you<S2SV_blank>expect<S2SV_blank>for<S2SV_blank>@.<S2SV_blank>import<S2SV_blank>offset<S2SV_blank>from<S2SV_blank>file<S2SV_blank>maybe?\\\\n\" ) ; } } else if ( ptr [ 0 ] && ptr [ 1 ] == ':' && ptr [ 2 ] ) { switch ( ptr [ 0 ] ) { case 'F' : flgspc_changed = r_flag_space_push ( core -> flags , ptr + 2 ) ; break ; case 'B' : { int index = ( int ) r_num_math ( core -> num , ptr + 2 ) ; RAnalBlock * bb = r_anal_bb_from_offset ( core -> anal , core -> offset ) ; if ( bb ) { if ( index < 0 ) { index = bb -> ninstr + index ; } if ( index >= 0 && index < bb -> ninstr ) { ut16 inst_off = r_anal_bb_offset_inst ( bb , index ) ; r_core_seek ( core , bb -> addr + inst_off , 1 ) ; cmd_tmpseek = core -> tmpseek = true ; } else { eprintf ( \"The<S2SV_blank>current<S2SV_blank>basic<S2SV_blank>block<S2SV_blank>has<S2SV_blank>%d<S2SV_blank>instructions\\\\n\" , bb -> ninstr ) ; } } else { eprintf ( \"Can\\'t<S2SV_blank>find<S2SV_blank>a<S2SV_blank>basic<S2SV_blank>block<S2SV_blank>for<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , core -> offset ) ; } break ; } break ; case 'f' : f = r_file_slurp ( ptr + 2 , & sz ) ; if ( f ) { { RBuffer * b = r_buf_new_with_bytes ( ( const ut8 * ) f , sz ) ; RIODesc * d = r_io_open_buffer ( core -> io , b , R_PERM_RWX , 0 ) ; if ( d ) { if ( tmpdesc ) { r_io_desc_close ( tmpdesc ) ; } tmpdesc = d ; if ( pamode ) { r_config_set_i ( core -> config , \"io.va\" , 1 ) ; } r_io_map_new ( core -> io , d -> fd , d -> perm , 0 , core -> offset , r_buf_size ( b ) ) ; } } # if 0 buf = malloc ( sz ) ; if ( buf ) { free ( core -> block ) ; core -> block = buf ; core -> blocksize = sz ; memcpy ( core -> block , f , sz ) ; usemyblock = true ; } else { eprintf ( \"cannot<S2SV_blank>alloc<S2SV_blank>%d\" , sz ) ; } free ( f ) ; # endif } else { eprintf ( \"cannot<S2SV_blank>open<S2SV_blank>\\'%s\\'\\\\n\" , ptr + 3 ) ; } break ; case 'r' : if ( ptr [ 1 ] == ':' ) { ut64 regval ; char * mander = strdup ( ptr + 2 ) ; char * sep = findSeparator ( mander ) ; if ( sep ) { char ch = * sep ; * sep = 0 ; regval = r_debug_reg_get ( core -> dbg , mander ) ; * sep = ch ; char * numexpr = r_str_newf ( \"0x%\" PFMT64x \"%s\" , regval , sep ) ; regval = r_num_math ( core -> num , numexpr ) ; free ( numexpr ) ; } else { regval = r_debug_reg_get ( core -> dbg , ptr + 2 ) ; } r_core_seek ( core , regval , 1 ) ; cmd_tmpseek = core -> tmpseek = true ; free ( mander ) ; } break ; case 'b' : is_bits_set = set_tmp_bits ( core , r_num_math ( core -> num , ptr + 2 ) , & tmpbits ) ; cmd_ignbithints = r_config_get_i ( core -> config , \"anal.ignbithints\" ) ; r_config_set_i ( core -> config , \"anal.ignbithints\" , 1 ) ; break ; case 'i' : { ut64 addr = r_num_math ( core -> num , ptr + 2 ) ; if ( addr ) { r_core_cmdf ( core , \"so<S2SV_blank>%s\" , ptr + 2 ) ; cmd_tmpseek = core -> tmpseek = true ; } } break ; case 'e' : { char * cmd = parse_tmp_evals ( core , ptr + 2 ) ; if ( ! tmpeval ) { tmpeval = cmd ; } else { tmpeval = r_str_prepend ( tmpeval , cmd ) ; free ( cmd ) ; } } break ; case 'x' : if ( ptr [ 1 ] == ':' ) { buf = malloc ( strlen ( ptr + 2 ) + 1 ) ; if ( buf ) { len = r_hex_str2bin ( ptr + 2 , buf ) ; r_core_block_size ( core , R_ABS ( len ) ) ; if ( len > 0 ) { RBuffer * b = r_buf_new_with_bytes ( buf , len ) ; RIODesc * d = r_io_open_buffer ( core -> io , b , R_PERM_RWX , 0 ) ; if ( d ) { if ( tmpdesc ) { r_io_desc_close ( tmpdesc ) ; } tmpdesc = d ; if ( pamode ) { r_config_set_i ( core -> config , \"io.va\" , 1 ) ; } r_io_map_new ( core -> io , d -> fd , d -> perm , 0 , core -> offset , r_buf_size ( b ) ) ; r_core_block_size ( core , len ) ; r_core_block_read ( core ) ; } } else { eprintf ( \"Error:<S2SV_blank>Invalid<S2SV_blank>hexpairs<S2SV_blank>for<S2SV_blank>@x:\\\\n\" ) ; } free ( buf ) ; } else { eprintf ( \"cannot<S2SV_blank>allocate\\\\n\" ) ; } } else { eprintf ( \"Invalid<S2SV_blank>@x:<S2SV_blank>syntax\\\\n\" ) ; } break ; case 'k' : { char * out = sdb_querys ( core -> sdb , NULL , 0 , ptr + ( ( ptr [ 1 ] ) ? 2 : 1 ) ) ; if ( out ) { r_core_seek ( core , r_num_math ( core -> num , out ) , 1 ) ; free ( out ) ; usemyblock = true ; } } break ; case 'o' : if ( ptr [ 1 ] == ':' ) { tmpfd = core -> io -> desc ? core -> io -> desc -> fd : - 1 ; r_io_use_fd ( core -> io , atoi ( ptr + 2 ) ) ; } break ; case 'a' : if ( ptr [ 1 ] == ':' ) { char * q = strchr ( ptr + 2 , ':' ) ; if ( q ) { * q ++ = 0 ; int bits = r_num_math ( core -> num , q ) ; is_bits_set = set_tmp_bits ( core , bits , & tmpbits ) ; } is_arch_set = set_tmp_arch ( core , ptr + 2 , & tmpasm ) ; } else { eprintf ( \"Usage:<S2SV_blank>pd<S2SV_blank>10<S2SV_blank>@a:arm:32\\\\n\" ) ; } break ; case 's' : { len = strlen ( ptr + 2 ) ; r_core_block_size ( core , len ) ; const ut8 * buf = ( const ut8 * ) r_str_trim_ro ( ptr + 2 ) ; if ( len > 0 ) { RBuffer * b = r_buf_new_with_bytes ( buf , len ) ; RIODesc * d = r_io_open_buffer ( core -> io , b , R_PERM_RWX , 0 ) ; if ( ! core -> io -> va ) { r_config_set_i ( core -> config , \"io.va\" , 1 ) ; } if ( d ) { if ( tmpdesc ) { r_io_desc_close ( tmpdesc ) ; } tmpdesc = d ; if ( pamode ) { r_config_set_i ( core -> config , \"io.va\" , 1 ) ; } r_io_map_new ( core -> io , d -> fd , d -> perm , 0 , core -> offset , r_buf_size ( b ) ) ; r_core_block_size ( core , len ) ; } } } break ; default : goto ignore ; } * ptr = '@' ; char * trim = ptr - 2 ; while ( trim > cmd ) { if ( ! IS_WHITESPACE ( * trim ) ) { break ; } * trim = 0 ; trim -- ; } goto next_arroba ; } ignore : ptr = r_str_trim_head ( ptr + 1 ) - 1 ; cmd = r_str_trim_nc ( cmd ) ; if ( ptr2 ) { if ( strlen ( ptr + 1 ) == 13 && strlen ( ptr2 + 1 ) == 6 && ! memcmp ( ptr + 1 , \"0x\" , 2 ) && ! memcmp ( ptr2 + 1 , \"0x\" , 2 ) ) { } else if ( strlen ( ptr + 1 ) == 9 && strlen ( ptr2 + 1 ) == 4 ) { } else { * ptr2 = '\\\\0' ; if ( ! ptr2 [ 1 ] ) { goto fail ; } r_core_block_size ( core , r_num_math ( core -> num , ptr2 + 1 ) ) ; } } offstr = r_str_trim_head ( ptr + 1 ) ; addr = r_num_math ( core -> num , offstr ) ; addr_is_set = true ; if ( isalpha ( ( ut8 ) ptr [ 1 ] ) && ! addr ) { if ( ! r_flag_get ( core -> flags , ptr + 1 ) ) { eprintf ( \"Invalid<S2SV_blank>address<S2SV_blank>(%s)\\\\n\" , ptr + 1 ) ; goto fail ; } } else { char ch = * offstr ; if ( ch == '-' || ch == '+' ) { addr = core -> offset + addr ; } } if ( addr ) { RIODesc * d = tmpdesc ; if ( d ) { r_io_map_new ( core -> io , d -> fd , d -> perm , 0 , addr , r_io_desc_size ( d ) ) ; } } next_arroba : if ( arroba ) { ptr = arroba + 1 ; * arroba = '@' ; arroba = NULL ; goto repeat_arroba ; } core -> fixedblock = ! ! tmpdesc ; if ( core -> fixedblock ) { r_core_block_read ( core ) ; } if ( ptr [ 1 ] == '@' ) { if ( ptr [ 2 ] == '@' ) { char * rule = ptr + 3 ; while ( * rule && * rule == '<S2SV_blank>' ) { rule ++ ; } ret = r_core_cmd_foreach3 ( core , cmd , rule ) ; } else { ret = r_core_cmd_foreach ( core , cmd , ptr + 2 ) ; } } else { bool tmpseek = false ; const char * fromvars [ ] = { \"anal.from\" , \"diff.from\" , \"graph.from\" , \"io.buffer.from\" , \"lines.from\" , \"search.from\" , \"zoom.from\" , NULL } ; const char * tovars [ ] = { \"anal.to\" , \"diff.to\" , \"graph.to\" , \"io.buffer.to\" , \"lines.to\" , \"search.to\" , \"zoom.to\" , NULL } ; ut64 curfrom [ R_ARRAY_SIZE ( fromvars ) - 1 ] , curto [ R_ARRAY_SIZE ( tovars ) - 1 ] ; if ( ptr [ 1 ] == '(' ) { char * range = ptr + 3 ; char * p = strchr ( range , '<S2SV_blank>' ) ; if ( ! p ) { eprintf ( \"Usage:<S2SV_blank>/<S2SV_blank>ABCD<S2SV_blank>@..0x1000<S2SV_blank>0x3000\\\\n\" ) ; free ( tmpeval ) ; free ( tmpasm ) ; free ( tmpbits ) ; goto fail ; } * p = '\\\\x00' ; ut64 from = r_num_math ( core -> num , range ) ; ut64 to = r_num_math ( core -> num , p + 1 ) ; for ( i = 0 ; fromvars [ i ] ; i ++ ) { curfrom [ i ] = r_config_get_i ( core -> config , fromvars [ i ] ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { curto [ i ] = r_config_get_i ( core -> config , tovars [ i ] ) ; } for ( i = 0 ; fromvars [ i ] ; i ++ ) { r_config_set_i ( core -> config , fromvars [ i ] , from ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { r_config_set_i ( core -> config , tovars [ i ] , to ) ; } tmpseek = true ; } if ( usemyblock ) { if ( addr_is_set ) { core -> offset = addr ; } ret = r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) ; } else { if ( addr_is_set ) { if ( ptr [ 1 ] ) { r_core_seek ( core , addr , 1 ) ; r_core_block_read ( core ) ; } } ret = r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) ; } if ( tmpseek ) { for ( i = 0 ; fromvars [ i ] ; i ++ ) { r_config_set_i ( core -> config , fromvars [ i ] , curfrom [ i ] ) ; } for ( i = 0 ; tovars [ i ] ; i ++ ) { r_config_set_i ( core -> config , tovars [ i ] , curto [ i ] ) ; } } } if ( ptr2 ) { * ptr2 = '!' ; r_core_block_size ( core , tmpbsz ) ; } if ( is_arch_set ) { core -> fixedarch = oldfixedarch ; r_config_set ( core -> config , \"asm.arch\" , tmpasm ) ; R_FREE ( tmpasm ) ; } if ( tmpfd != - 1 ) { r_io_use_fd ( core -> io , tmpfd ) ; } if ( tmpdesc ) { if ( pamode ) { r_config_set_i ( core -> config , \"io.va\" , 0 ) ; } r_io_desc_close ( tmpdesc ) ; tmpdesc = NULL ; } if ( is_bits_set ) { r_config_set ( core -> config , \"asm.bits\" , tmpbits ) ; core -> fixedbits = oldfixedbits ; } if ( tmpbsz != core -> blocksize ) { r_core_block_size ( core , tmpbsz ) ; } if ( tmpeval ) { r_core_cmd0 ( core , tmpeval ) ; R_FREE ( tmpeval ) ; } if ( flgspc_changed ) { r_flag_space_pop ( core -> flags ) ; } * ptr = '@' ; rc = ret ; goto beach ; } fuji : rc = cmd ? r_cmd_call ( core -> rcmd , r_str_trim_head ( cmd ) ) : false ; beach : r_cons_grep_process ( grep ) ; if ( scr_html != - 1 ) { r_cons_flush ( ) ; r_config_set_i ( core -> config , \"scr.html\" , scr_html ) ; } if ( scr_color != - 1 ) { r_config_set_i ( core -> config , \"scr.color\" , scr_color ) ; } r_list_free ( tmpenvs ) ; if ( tmpdesc ) { r_io_desc_close ( tmpdesc ) ; tmpdesc = NULL ; } core -> fixedarch = oldfixedarch ; core -> fixedbits = oldfixedbits ; if ( tmpseek ) { * tmpseek = cmd_tmpseek ; } if ( cmd_ignbithints != - 1 ) { r_config_set_i ( core -> config , \"anal.ignbithints\" , cmd_ignbithints ) ; } return rc ; fail : rc = - 1 ; goto beach ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> continue ; } char op0 = 0 ; <S2SV_ModStart> q ) { op0 = * q ; <S2SV_ModStart> cmd = p <S2SV_ModEnd> ; } else <S2SV_ModStart> * p = op0 <S2SV_ModEnd> ; cmd =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3152\n\n```\nCWE-284 static int send_client_reply_packet ( MCPVIO_EXT * mpvio , const uchar * data , int data_len ) { MYSQL * mysql = mpvio -> mysql ; NET * net = & mysql -> net ; char * buff , * end ; size_t buff_size ; size_t connect_attrs_len = ( mysql -> server_capabilities & CLIENT_CONNECT_ATTRS && mysql -> options . extension ) ? mysql -> options . extension -> connection_attributes_length : 0 ; DBUG_ASSERT ( connect_attrs_len < MAX_CONNECTION_ATTR_STORAGE_LENGTH ) ; buff_size = 33 + USERNAME_LENGTH + data_len + 9 + NAME_LEN + NAME_LEN + connect_attrs_len + 9 ; buff = my_alloca ( buff_size ) ; mysql -> client_flag |= mysql -> options . client_flag ; mysql -> client_flag |= CLIENT_CAPABILITIES ; if ( mysql -> client_flag & CLIENT_MULTI_STATEMENTS ) mysql -> client_flag |= CLIENT_MULTI_RESULTS ; # if defined ( HAVE_OPENSSL ) && ! defined ( EMBEDDED_LIBRARY ) if ( mysql -> options . ssl_key || mysql -> options . ssl_cert || mysql -> options . ssl_ca || mysql -> options . ssl_capath || mysql -> options . ssl_cipher || ( mysql -> options . extension && mysql -> options . extension -> ssl_crl ) || <S2SV_StartBug> ( mysql -> options . extension && mysql -> options . extension -> ssl_crlpath ) ) <S2SV_EndBug> <S2SV_StartBug> mysql -> options . use_ssl = 1 ; <S2SV_EndBug> if ( mysql -> options . use_ssl ) mysql -> client_flag |= CLIENT_SSL ; # endif if ( mpvio -> db ) mysql -> client_flag |= CLIENT_CONNECT_WITH_DB ; else mysql -> client_flag &= ~ CLIENT_CONNECT_WITH_DB ; mysql -> client_flag = mysql -> client_flag & ( ~ ( CLIENT_COMPRESS | CLIENT_SSL | CLIENT_PROTOCOL_41 ) | mysql -> server_capabilities ) ; # ifndef HAVE_COMPRESS mysql -> client_flag &= ~ CLIENT_COMPRESS ; # endif if ( mysql -> client_flag & CLIENT_PROTOCOL_41 ) { int4store ( buff , mysql -> client_flag ) ; int4store ( buff + 4 , net -> max_packet_size ) ; buff [ 8 ] = ( char ) mysql -> charset -> number ; memset ( buff + 9 , 0 , 32 - 9 ) ; end = buff + 32 ; } else { int2store ( buff , mysql -> client_flag ) ; int3store ( buff + 2 , net -> max_packet_size ) ; end = buff + 5 ; } # ifdef HAVE_OPENSSL <S2SV_StartBug> if ( mysql -> client_flag & CLIENT_SSL ) <S2SV_EndBug> { struct st_mysql_options * options = & mysql -> options ; struct st_VioSSLFd * ssl_fd ; enum enum_ssl_init_error ssl_init_error ; const char * cert_error ; <S2SV_StartBug> unsigned long ssl_error ; <S2SV_EndBug> MYSQL_TRACE ( SEND_SSL_REQUEST , mysql , ( end - buff , ( const unsigned char * ) buff ) ) ; if ( my_net_write ( net , ( uchar * ) buff , ( size_t ) ( end - buff ) ) || net_flush ( net ) ) { set_mysql_extended_error ( mysql , CR_SERVER_LOST , unknown_sqlstate , ER ( CR_SERVER_LOST_EXTENDED ) , \"sending<S2SV_blank>connection<S2SV_blank>information<S2SV_blank>to<S2SV_blank>server\" , errno ) ; goto error ; } MYSQL_TRACE_STAGE ( mysql , SSL_NEGOTIATION ) ; if ( ! ( ssl_fd = new_VioSSLConnectorFd ( options -> ssl_key , options -> ssl_cert , options -> ssl_ca , options -> ssl_capath , options -> ssl_cipher , & ssl_init_error , options -> extension ? options -> extension -> ssl_crl : NULL , options -> extension ? options -> extension -> ssl_crlpath : NULL ) ) ) { set_mysql_extended_error ( mysql , CR_SSL_CONNECTION_ERROR , unknown_sqlstate , ER ( CR_SSL_CONNECTION_ERROR ) , sslGetErrString ( ssl_init_error ) ) ; goto error ; } mysql -> connector_fd = ( unsigned char * ) ssl_fd ; DBUG_PRINT ( \"info\" , ( \"IO<S2SV_blank>layer<S2SV_blank>change<S2SV_blank>in<S2SV_blank>progress...\" ) ) ; MYSQL_TRACE ( SSL_CONNECT , mysql , ( ) ) ; if ( sslconnect ( ssl_fd , net -> vio , ( long ) ( mysql -> options . connect_timeout ) , & ssl_error ) ) { char buf [ 512 ] ; ERR_error_string_n ( ssl_error , buf , 512 ) ; buf [ 511 ] = 0 ; set_mysql_extended_error ( mysql , CR_SSL_CONNECTION_ERROR , unknown_sqlstate , ER ( CR_SSL_CONNECTION_ERROR ) , buf ) ; goto error ; } DBUG_PRINT ( \"info\" , ( \"IO<S2SV_blank>layer<S2SV_blank>change<S2SV_blank>done!\" ) ) ; if ( ( mysql -> client_flag & CLIENT_SSL_VERIFY_SERVER_CERT ) && ssl_verify_server_cert ( net -> vio , mysql -> host , & cert_error ) ) { set_mysql_extended_error ( mysql , CR_SSL_CONNECTION_ERROR , unknown_sqlstate , ER ( CR_SSL_CONNECTION_ERROR ) , cert_error ) ; goto error ; } MYSQL_TRACE ( SSL_CONNECTED , mysql , ( ) ) ; MYSQL_TRACE_STAGE ( mysql , AUTHENTICATE ) ; } # endif DBUG_PRINT ( \"info\" , ( \"Server<S2SV_blank>version<S2SV_blank>=<S2SV_blank>\\'%s\\'<S2SV_blank><S2SV_blank>capabilites:<S2SV_blank>%lu<S2SV_blank><S2SV_blank>status:<S2SV_blank>%u<S2SV_blank><S2SV_blank>client_flag:<S2SV_blank>%lu\" , mysql -> server_version , mysql -> server_capabilities , mysql -> server_status , mysql -> client_flag ) ) ; compile_time_assert ( MYSQL_USERNAME_LENGTH == USERNAME_LENGTH ) ; if ( mysql -> user [ 0 ] ) strmake ( end , mysql -> user , USERNAME_LENGTH ) ; else read_user_name ( end ) ; DBUG_PRINT ( \"info\" , ( \"user:<S2SV_blank>%s\" , end ) ) ; end = strend ( end ) + 1 ; if ( data_len ) { if ( mysql -> server_capabilities & CLIENT_SECURE_CONNECTION ) { if ( mysql -> server_capabilities & CLIENT_PLUGIN_AUTH_LENENC_CLIENT_DATA ) end = write_length_encoded_string4 ( end , ( char * ) ( buff + buff_size ) , ( char * ) data , ( char * ) ( data + data_len ) ) ; else end = write_string ( end , ( char * ) ( buff + buff_size ) , ( char * ) data , ( char * ) ( data + data_len ) ) ; if ( end == NULL ) goto error ; } else { DBUG_ASSERT ( data_len == SCRAMBLE_LENGTH_323 + 1 ) ; memcpy ( end , data , data_len ) ; end += data_len ; } } else * end ++ = 0 ; if ( mpvio -> db && ( mysql -> server_capabilities & CLIENT_CONNECT_WITH_DB ) ) { end = strmake ( end , mpvio -> db , NAME_LEN ) + 1 ; mysql -> db = my_strdup ( key_memory_MYSQL , mpvio -> db , MYF ( MY_WME ) ) ; } if ( mysql -> server_capabilities & CLIENT_PLUGIN_AUTH ) end = strmake ( end , mpvio -> plugin -> name , NAME_LEN ) + 1 ; end = ( char * ) send_client_connect_attrs ( mysql , ( uchar * ) end ) ; MYSQL_TRACE ( SEND_AUTH_RESPONSE , mysql , ( end - buff , ( const unsigned char * ) buff ) ) ; if ( my_net_write ( net , ( uchar * ) buff , ( size_t ) ( end - buff ) ) || net_flush ( net ) ) { set_mysql_extended_error ( mysql , CR_SERVER_LOST , unknown_sqlstate , ER ( CR_SERVER_LOST_EXTENDED ) , \"sending<S2SV_blank>authentication<S2SV_blank>information\" , errno ) ; goto error ; } MYSQL_TRACE ( PACKET_SENT , mysql , ( end - buff ) ) ; my_afree ( buff ) ; return 0 ; error : my_afree ( buff ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ssl_crlpath ) || ( mysql -> options . extension && mysql -> options . extension -> ssl_enforce ) <S2SV_ModStart> . use_ssl = TRUE <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( mysql -> options . extension && mysql -> options . extension -> ssl_enforce ) { DBUG_ASSERT ( mysql -> options . use_ssl ) ; if ( ! ( mysql -> server_capabilities & CLIENT_SSL ) ) { set_mysql_extended_error ( mysql , CR_SSL_CONNECTION_ERROR , unknown_sqlstate , ER ( CR_SSL_CONNECTION_ERROR ) , \"SSL<S2SV_blank>is<S2SV_blank>required<S2SV_blank>but<S2SV_blank>the<S2SV_blank>server<S2SV_blank>doesn\\'t<S2SV_blank>\" \"support<S2SV_blank>it\" ) ; goto error ; } } if ( ( mysql -> server_capabilities & CLIENT_SSL ) && mysql -> options . use_ssl <S2SV_ModEnd> ) { struct <S2SV_ModStart> long ssl_error ; if ( ! mysql -> options . ssl_cipher ) { SET_OPTION ( ssl_cipher , default_ssl_cipher ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12982\n\n```\nCWE-119 static OPJ_BOOL bmp_read_info_header ( FILE * IN , OPJ_BITMAPINFOHEADER * header ) { memset ( header , 0 , sizeof ( * header ) ) ; header -> biSize = ( OPJ_UINT32 ) getc ( IN ) ; header -> biSize |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biSize |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biSize |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; switch ( header -> biSize ) { case 12U : case 40U : case 52U : case 56U : case 108U : case 124U : break ; default : fprintf ( stderr , \"Error,<S2SV_blank>unknown<S2SV_blank>BMP<S2SV_blank>header<S2SV_blank>size<S2SV_blank>%d\\\\n\" , header -> biSize ) ; return OPJ_FALSE ; } header -> biWidth = ( OPJ_UINT32 ) getc ( IN ) ; header -> biWidth |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biWidth |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biWidth |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biHeight = ( OPJ_UINT32 ) getc ( IN ) ; header -> biHeight |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biHeight |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biHeight |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biPlanes = ( OPJ_UINT16 ) getc ( IN ) ; header -> biPlanes |= ( OPJ_UINT16 ) ( ( OPJ_UINT32 ) getc ( IN ) << 8 ) ; header -> biBitCount = ( OPJ_UINT16 ) getc ( IN ) ; header -> biBitCount |= ( OPJ_UINT16 ) ( ( OPJ_UINT32 ) getc ( IN ) << 8 ) ; <S2SV_StartBug> if ( header -> biSize >= 40U ) { <S2SV_EndBug> header -> biCompression = ( OPJ_UINT32 ) getc ( IN ) ; header -> biCompression |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biCompression |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biCompression |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biSizeImage = ( OPJ_UINT32 ) getc ( IN ) ; header -> biSizeImage |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biSizeImage |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biSizeImage |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biXpelsPerMeter = ( OPJ_UINT32 ) getc ( IN ) ; header -> biXpelsPerMeter |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biXpelsPerMeter |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biXpelsPerMeter |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biYpelsPerMeter = ( OPJ_UINT32 ) getc ( IN ) ; header -> biYpelsPerMeter |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biYpelsPerMeter |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biYpelsPerMeter |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biClrUsed = ( OPJ_UINT32 ) getc ( IN ) ; header -> biClrUsed |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biClrUsed |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biClrUsed |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biClrImportant = ( OPJ_UINT32 ) getc ( IN ) ; header -> biClrImportant |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biClrImportant |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biClrImportant |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; } if ( header -> biSize >= 56U ) { header -> biRedMask = ( OPJ_UINT32 ) getc ( IN ) ; header -> biRedMask |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biRedMask |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biRedMask |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biGreenMask = ( OPJ_UINT32 ) getc ( IN ) ; header -> biGreenMask |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biGreenMask |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biGreenMask |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biBlueMask = ( OPJ_UINT32 ) getc ( IN ) ; header -> biBlueMask |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biBlueMask |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biBlueMask |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biAlphaMask = ( OPJ_UINT32 ) getc ( IN ) ; header -> biAlphaMask |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biAlphaMask |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biAlphaMask |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; } if ( header -> biSize >= 108U ) { header -> biColorSpaceType = ( OPJ_UINT32 ) getc ( IN ) ; header -> biColorSpaceType |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biColorSpaceType |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biColorSpaceType |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; if ( fread ( & ( header -> biColorSpaceEP ) , 1U , sizeof ( header -> biColorSpaceEP ) , IN ) != sizeof ( header -> biColorSpaceEP ) ) { fprintf ( stderr , \"Error,<S2SV_blank>can\\'t<S2SV_blank><S2SV_blank>read<S2SV_blank>BMP<S2SV_blank>header\\\\n\" ) ; return OPJ_FALSE ; } header -> biRedGamma = ( OPJ_UINT32 ) getc ( IN ) ; header -> biRedGamma |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biRedGamma |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biRedGamma |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biGreenGamma = ( OPJ_UINT32 ) getc ( IN ) ; header -> biGreenGamma |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biGreenGamma |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biGreenGamma |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biBlueGamma = ( OPJ_UINT32 ) getc ( IN ) ; header -> biBlueGamma |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biBlueGamma |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biBlueGamma |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; } if ( header -> biSize >= 124U ) { header -> biIntent = ( OPJ_UINT32 ) getc ( IN ) ; header -> biIntent |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biIntent |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biIntent |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biIccProfileData = ( OPJ_UINT32 ) getc ( IN ) ; header -> biIccProfileData |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biIccProfileData |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biIccProfileData |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biIccProfileSize = ( OPJ_UINT32 ) getc ( IN ) ; header -> biIccProfileSize |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biIccProfileSize |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biIccProfileSize |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; header -> biReserved = ( OPJ_UINT32 ) getc ( IN ) ; header -> biReserved |= ( OPJ_UINT32 ) getc ( IN ) << 8 ; header -> biReserved |= ( OPJ_UINT32 ) getc ( IN ) << 16 ; header -> biReserved |= ( OPJ_UINT32 ) getc ( IN ) << 24 ; } return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( header -> biBitCount == 0 ) { fprintf ( stderr , \"Error,<S2SV_blank>invalid<S2SV_blank>biBitCount<S2SV_blank>%d\\\\n\" , 0 ) ; return OPJ_FALSE ; } if ( header ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5287\n\n```\nCWE-59 int main ( int argc , char * * argv ) { int fd = xopen ( \"/dev/null\" , O_RDWR ) ; while ( fd < 2 ) fd = xdup ( fd ) ; if ( fd > 2 ) close ( fd ) ; int err = 1 ; logmode = LOGMODE_JOURNAL ; load_abrt_conf ( ) ; bool setting_MakeCompatCore ; bool setting_SaveBinaryImage ; bool setting_SaveFullCore ; bool setting_CreateCoreBacktrace ; bool setting_SaveContainerizedPackageData ; bool setting_StandaloneHook ; { map_string_t * settings = new_map_string ( ) ; load_abrt_plugin_conf_file ( \"CCpp.conf\" , settings ) ; const char * value ; value = get_map_string_item_or_NULL ( settings , \"MakeCompatCore\" ) ; setting_MakeCompatCore = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"SaveBinaryImage\" ) ; setting_SaveBinaryImage = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"SaveFullCore\" ) ; setting_SaveFullCore = value ? string_to_bool ( value ) : true ; value = get_map_string_item_or_NULL ( settings , \"CreateCoreBacktrace\" ) ; setting_CreateCoreBacktrace = value ? string_to_bool ( value ) : true ; value = get_map_string_item_or_NULL ( settings , \"SaveContainerizedPackageData\" ) ; setting_SaveContainerizedPackageData = value && string_to_bool ( value ) ; if ( ! g_settings_explorechroots ) { if ( setting_SaveContainerizedPackageData ) log_warning ( \"Ignoring<S2SV_blank>SaveContainerizedPackageData<S2SV_blank>because<S2SV_blank>ExploreChroots<S2SV_blank>is<S2SV_blank>disabled\" ) ; setting_SaveContainerizedPackageData = false ; } value = get_map_string_item_or_NULL ( settings , \"StandaloneHook\" ) ; setting_StandaloneHook = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"VerboseLog\" ) ; if ( value ) g_verbose = xatoi_positive ( value ) ; free_map_string ( settings ) ; } if ( argc == 2 && strcmp ( argv [ 1 ] , \"--config-test\" ) ) return test_configuration ( setting_SaveFullCore , setting_CreateCoreBacktrace ) ; if ( argc < 8 ) { error_msg_and_die ( \"Usage:<S2SV_blank>%s<S2SV_blank>SIGNO<S2SV_blank>CORE_SIZE_LIMIT<S2SV_blank>PID<S2SV_blank>UID<S2SV_blank>GID<S2SV_blank>TIME<S2SV_blank>BINARY_NAME<S2SV_blank>GLOBAL_PID<S2SV_blank>[TID]\" , argv [ 0 ] ) ; } if ( strchr ( argv [ 1 ] , '<S2SV_blank>' ) ) { int i ; for ( i = 1 ; argv [ i ] ; i ++ ) { strchrnul ( argv [ i ] , '<S2SV_blank>' ) [ 0 ] = '\\\\0' ; } } errno = 0 ; const char * signal_str = argv [ 1 ] ; int signal_no = xatoi_positive ( signal_str ) ; off_t ulimit_c = strtoull ( argv [ 2 ] , NULL , 10 ) ; if ( ulimit_c < 0 ) { ulimit_c = ~ ( ( off_t ) 1 << ( sizeof ( off_t ) * 8 - 1 ) ) ; } const char * pid_str = argv [ 3 ] ; pid_t local_pid = xatoi_positive ( argv [ 3 ] ) ; uid_t uid = xatoi_positive ( argv [ 4 ] ) ; if ( errno || local_pid <= 0 ) { perror_msg_and_die ( \"PID<S2SV_blank>\\'%s\\'<S2SV_blank>or<S2SV_blank>limit<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>bogus\" , argv [ 3 ] , argv [ 2 ] ) ; } { char * s = xmalloc_fopen_fgetline_fclose ( VAR_RUN \"/abrt/saved_core_pattern\" ) ; if ( s && s [ 0 ] != '|' ) core_basename = s ; else free ( s ) ; } const char * global_pid_str = argv [ 8 ] ; pid_t pid = xatoi_positive ( argv [ 8 ] ) ; pid_t tid = - 1 ; const char * tid_str = argv [ 9 ] ; if ( tid_str ) { tid = xatoi_positive ( tid_str ) ; } char path [ PATH_MAX ] ; char * executable = get_executable ( pid ) ; if ( executable && strstr ( executable , \"/abrt-hook-ccpp\" ) ) { error_msg_and_die ( \"PID<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>\\'%s\\',<S2SV_blank>not<S2SV_blank>dumping<S2SV_blank>it<S2SV_blank>to<S2SV_blank>avoid<S2SV_blank>recursion\" , ( long ) pid , executable ) ; } user_pwd = get_cwd ( pid ) ; log_notice ( \"user_pwd:\\'%s\\'\" , user_pwd ) ; sprintf ( path , \"/proc/%lu/status\" , ( long ) pid ) ; char * proc_pid_status = xmalloc_xopen_read_close ( path , NULL ) ; uid_t fsuid = uid ; uid_t tmp_fsuid = get_fsuid ( proc_pid_status ) ; if ( tmp_fsuid < 0 ) perror_msg_and_die ( \"Can\\'t<S2SV_blank>parse<S2SV_blank>\\'Uid:<S2SV_blank>line\\'<S2SV_blank>in<S2SV_blank>/proc/%lu/status\" , ( long ) pid ) ; const int fsgid = get_fsgid ( proc_pid_status ) ; if ( fsgid < 0 ) error_msg_and_die ( \"Can\\'t<S2SV_blank>parse<S2SV_blank>\\'Gid:<S2SV_blank>line\\'<S2SV_blank>in<S2SV_blank>/proc/%lu/status\" , ( long ) pid ) ; int suid_policy = dump_suid_policy ( ) ; if ( tmp_fsuid != uid ) { fsuid = 0 ; if ( suid_policy == DUMP_SUID_UNSAFE ) fsuid = tmp_fsuid ; else { g_user_core_flags = O_EXCL ; g_need_nonrelative = 1 ; } } int user_core_fd = - 1 ; if ( setting_MakeCompatCore && ulimit_c != 0 ) user_core_fd = open_user_core ( uid , fsuid , fsgid , pid , & argv [ 1 ] ) ; if ( executable == NULL ) { error_msg ( \"Can\\'t<S2SV_blank>read<S2SV_blank>/proc/%lu/exe<S2SV_blank>link\" , ( long ) pid ) ; return create_user_core ( user_core_fd , pid , ulimit_c ) ; } const char * signame = NULL ; if ( ! signal_is_fatal ( signal_no , & signame ) ) return create_user_core ( user_core_fd , pid , ulimit_c ) ; const int abrtd_running = daemon_is_ok ( ) ; if ( ! setting_StandaloneHook && ! abrtd_running ) { log ( \"abrtd<S2SV_blank>is<S2SV_blank>not<S2SV_blank>running.<S2SV_blank>If<S2SV_blank>it<S2SV_blank>crashed,<S2SV_blank>\" \"/proc/sys/kernel/core_pattern<S2SV_blank>contains<S2SV_blank>a<S2SV_blank>stale<S2SV_blank>value,<S2SV_blank>\" \"consider<S2SV_blank>resetting<S2SV_blank>it<S2SV_blank>to<S2SV_blank>\\'core\\'\" ) ; return create_user_core ( user_core_fd , pid , ulimit_c ) ; } if ( setting_StandaloneHook ) ensure_writable_dir ( g_settings_dump_location , DEFAULT_DUMP_LOCATION_MODE , \"abrt\" ) ; if ( g_settings_nMaxCrashReportsSize > 0 ) { if ( low_free_space ( g_settings_nMaxCrashReportsSize , g_settings_dump_location ) ) return create_user_core ( user_core_fd , pid , ulimit_c ) ; } snprintf ( path , sizeof ( path ) , \"%s/last-ccpp\" , g_settings_dump_location ) ; if ( check_recent_crash_file ( path , executable ) ) { return create_user_core ( user_core_fd , pid , ulimit_c ) ; } const char * last_slash = strrchr ( executable , '/' ) ; if ( last_slash && strncmp ( ++ last_slash , \"abrt\" , 4 ) == 0 ) { if ( g_settings_debug_level == 0 ) { log_warning ( \"Ignoring<S2SV_blank>crash<S2SV_blank>of<S2SV_blank>%s<S2SV_blank>(SIG%s).\" , executable , signame ? signame : signal_str ) ; goto cleanup_and_exit ; } if ( snprintf ( path , sizeof ( path ) , \"%s/%s-coredump\" , g_settings_dump_location , last_slash ) >= sizeof ( path ) ) error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\':<S2SV_blank>truncated<S2SV_blank>long<S2SV_blank>file<S2SV_blank>path\" , path ) ; <S2SV_StartBug> int abrt_core_fd = xopen3 ( path , O_WRONLY | O_CREAT | O_TRUNC , 0600 ) ; <S2SV_EndBug> off_t core_size = copyfd_eof ( STDIN_FILENO , abrt_core_fd , COPYFD_SPARSE ) ; if ( core_size < 0 || fsync ( abrt_core_fd ) != 0 ) { unlink ( path ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } log_notice ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; err = 0 ; goto cleanup_and_exit ; } unsigned path_len = snprintf ( path , sizeof ( path ) , \"%s/ccpp-%s-%lu.new\" , g_settings_dump_location , iso_date_string ( NULL ) , ( long ) pid ) ; if ( path_len >= ( sizeof ( path ) - sizeof ( \"/\" FILENAME_COREDUMP ) ) ) { return create_user_core ( user_core_fd , pid , ulimit_c ) ; } dd = dd_create ( path , 0 , DEFAULT_DUMP_DIR_MODE ) ; if ( dd ) { char source_filename [ sizeof ( \"/proc/%lu/somewhat_long_name\" ) + sizeof ( long ) * 3 ] ; int source_base_ofs = sprintf ( source_filename , \"/proc/%lu/root\" , ( long ) pid ) ; source_base_ofs -= strlen ( \"root\" ) ; char * rootdir = process_has_own_root ( pid ) ? get_rootdir ( pid ) : NULL ; if ( g_settings_explorechroots ) { dd_create_basic_files ( dd , fsuid , ( rootdir != NULL ) ? source_filename : NULL ) ; } else { dd_create_basic_files ( dd , fsuid , NULL ) ; } char * dest_filename = concat_path_file ( dd -> dd_dirname , \"also_somewhat_longish_name\" ) ; char * dest_base = strrchr ( dest_filename , '/' ) + 1 ; strcpy ( source_filename + source_base_ofs , \"maps\" ) ; dd_copy_file ( dd , FILENAME_MAPS , source_filename ) ; strcpy ( source_filename + source_base_ofs , \"limits\" ) ; dd_copy_file ( dd , FILENAME_LIMITS , source_filename ) ; strcpy ( source_filename + source_base_ofs , \"cgroup\" ) ; dd_copy_file ( dd , FILENAME_CGROUP , source_filename ) ; strcpy ( source_filename + source_base_ofs , \"mountinfo\" ) ; dd_copy_file ( dd , FILENAME_MOUNTINFO , source_filename ) ; strcpy ( dest_base , FILENAME_OPEN_FDS ) ; strcpy ( source_filename + source_base_ofs , \"fd\" ) ; dump_fd_info_ext ( dest_filename , source_filename , dd -> dd_uid , dd -> dd_gid ) ; strcpy ( dest_base , FILENAME_NAMESPACES ) ; dump_namespace_diff_ext ( dest_filename , 1 , pid , dd -> dd_uid , dd -> dd_gid ) ; free ( dest_filename ) ; char * tmp = NULL ; get_env_variable ( pid , \"container\" , & tmp ) ; if ( tmp != NULL ) { dd_save_text ( dd , FILENAME_CONTAINER , tmp ) ; free ( tmp ) ; tmp = NULL ; } get_env_variable ( pid , \"container_uuid\" , & tmp ) ; if ( tmp != NULL ) { dd_save_text ( dd , FILENAME_CONTAINER_UUID , tmp ) ; free ( tmp ) ; } const int containerized = ( rootdir != NULL && strcmp ( rootdir , \"/\" ) == 0 ) ; if ( containerized ) { log_debug ( \"Process<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>considered<S2SV_blank>to<S2SV_blank>be<S2SV_blank>containerized\" , pid ) ; pid_t container_pid ; if ( get_pid_of_container ( pid , & container_pid ) == 0 ) { char * container_cmdline = get_cmdline ( container_pid ) ; dd_save_text ( dd , FILENAME_CONTAINER_CMDLINE , container_cmdline ) ; free ( container_cmdline ) ; } } dd_save_text ( dd , FILENAME_ANALYZER , \"abrt-ccpp\" ) ; dd_save_text ( dd , FILENAME_TYPE , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_EXECUTABLE , executable ) ; dd_save_text ( dd , FILENAME_PID , pid_str ) ; dd_save_text ( dd , FILENAME_GLOBAL_PID , global_pid_str ) ; dd_save_text ( dd , FILENAME_PROC_PID_STATUS , proc_pid_status ) ; if ( user_pwd ) dd_save_text ( dd , FILENAME_PWD , user_pwd ) ; if ( tid_str ) dd_save_text ( dd , FILENAME_TID , tid_str ) ; if ( rootdir ) { if ( strcmp ( rootdir , \"/\" ) != 0 ) dd_save_text ( dd , FILENAME_ROOTDIR , rootdir ) ; } free ( rootdir ) ; char * reason = xasprintf ( \"%s<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>SIG%s\" , last_slash , signame ? signame : signal_str ) ; dd_save_text ( dd , FILENAME_REASON , reason ) ; free ( reason ) ; char * cmdline = get_cmdline ( pid ) ; dd_save_text ( dd , FILENAME_CMDLINE , cmdline ? : \"\" ) ; free ( cmdline ) ; char * environ = get_environ ( pid ) ; dd_save_text ( dd , FILENAME_ENVIRON , environ ? : \"\" ) ; free ( environ ) ; char * fips_enabled = xmalloc_fopen_fgetline_fclose ( \"/proc/sys/crypto/fips_enabled\" ) ; if ( fips_enabled ) { if ( strcmp ( fips_enabled , \"0\" ) != 0 ) dd_save_text ( dd , \"fips_enabled\" , fips_enabled ) ; free ( fips_enabled ) ; } dd_save_text ( dd , FILENAME_ABRT_VERSION , VERSION ) ; long unsigned lck_bytes = ULONG_MAX ; const char * vmlck = strstr ( proc_pid_status , \"VmLck:\" ) ; if ( vmlck == NULL ) error_msg ( \"/proc/%s/status<S2SV_blank>does<S2SV_blank>not<S2SV_blank>contain<S2SV_blank>\\'VmLck:\\'<S2SV_blank>line\" , pid_str ) ; else if ( 1 != sscanf ( vmlck + 6 , \"%lu<S2SV_blank>kB\\\\n\" , & lck_bytes ) ) error_msg ( \"Failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>\\'VmLck:\\'<S2SV_blank>line<S2SV_blank>in<S2SV_blank>/proc/%s/status\" , pid_str ) ; if ( lck_bytes ) { log_notice ( \"Process<S2SV_blank>%s<S2SV_blank>of<S2SV_blank>user<S2SV_blank>%lu<S2SV_blank>has<S2SV_blank>locked<S2SV_blank>memory\" , pid_str , ( long unsigned ) uid ) ; dd_mark_as_notreportable ( dd , \"The<S2SV_blank>process<S2SV_blank>had<S2SV_blank>locked<S2SV_blank>memory<S2SV_blank>\" \"which<S2SV_blank>usually<S2SV_blank>indicates<S2SV_blank>efforts<S2SV_blank>to<S2SV_blank>protect<S2SV_blank>sensitive<S2SV_blank>\" \"data<S2SV_blank>(passwords)<S2SV_blank>from<S2SV_blank>being<S2SV_blank>written<S2SV_blank>to<S2SV_blank>disk.\\\\n\" \"In<S2SV_blank>order<S2SV_blank>to<S2SV_blank>avoid<S2SV_blank>sensitive<S2SV_blank>information<S2SV_blank>leakages,<S2SV_blank>\" \"ABRT<S2SV_blank>will<S2SV_blank>not<S2SV_blank>allow<S2SV_blank>you<S2SV_blank>to<S2SV_blank>report<S2SV_blank>this<S2SV_blank>problem<S2SV_blank>to<S2SV_blank>\" \"bug<S2SV_blank>tracking<S2SV_blank>tools\" ) ; } if ( setting_SaveBinaryImage ) { if ( save_crashing_binary ( pid , dd ) ) { error_msg ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; goto cleanup_and_exit ; } } off_t core_size = 0 ; if ( setting_SaveFullCore ) { strcpy ( path + path_len , \"/\" FILENAME_COREDUMP ) ; int abrt_core_fd = create_or_die ( path , user_core_fd ) ; core_size = copyfd_sparse ( STDIN_FILENO , abrt_core_fd , user_core_fd , ulimit_c ) ; close_user_core ( user_core_fd , core_size ) ; if ( fsync ( abrt_core_fd ) != 0 || close ( abrt_core_fd ) != 0 || core_size < 0 ) { unlink ( path ) ; error_msg ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , path ) ; goto cleanup_and_exit ; } } else { create_user_core ( user_core_fd , pid , ulimit_c ) ; } user_core_fd = - 1 ; # if 0 { char * java_log = xasprintf ( \"/tmp/jvm-%lu/hs_error.log\" , ( long ) pid ) ; int src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; if ( src_fd < 0 ) { java_log = xasprintf ( \"%s/hs_err_pid%lu.log\" , user_pwd , ( long ) pid ) ; src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; } if ( src_fd >= 0 ) { strcpy ( path + path_len , \"/hs_err.log\" ) ; int dst_fd = create_or_die ( path , user_core_fd ) ; off_t sz = copyfd_eof ( src_fd , dst_fd , COPYFD_SPARSE ) ; if ( close ( dst_fd ) != 0 || sz < 0 ) { error_msg ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; goto cleanup_and_exit ; } close ( src_fd ) ; } } # endif if ( tid > 0 && setting_CreateCoreBacktrace ) create_core_backtrace ( tid , executable , signal_no , dd ) ; dd_close ( dd ) ; dd = NULL ; path [ path_len ] = '\\\\0' ; if ( abrtd_running && setting_SaveContainerizedPackageData && containerized ) { sprintf ( source_filename , \"/proc/%lu/root\" , ( long ) pid ) ; const char * cmd_args [ 6 ] ; cmd_args [ 0 ] = BIN_DIR \"/abrt-action-save-package-data\" ; cmd_args [ 1 ] = \"-d\" ; cmd_args [ 2 ] = path ; cmd_args [ 3 ] = \"-r\" ; cmd_args [ 4 ] = source_filename ; cmd_args [ 5 ] = NULL ; pid_t pid = fork_execv_on_steroids ( 0 , ( char * * ) cmd_args , NULL , NULL , path , 0 ) ; int stat ; safe_waitpid ( pid , & stat , 0 ) ; } char * newpath = xstrndup ( path , path_len - ( sizeof ( \".new\" ) - 1 ) ) ; if ( rename ( path , newpath ) == 0 ) strcpy ( path , newpath ) ; free ( newpath ) ; if ( core_size > 0 ) log_notice ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; if ( abrtd_running ) notify_new_path ( path ) ; if ( g_settings_nMaxCrashReportsSize > 0 ) { unsigned maxsize = g_settings_nMaxCrashReportsSize + g_settings_nMaxCrashReportsSize / 4 ; maxsize |= 63 ; trim_problem_dirs ( g_settings_dump_location , maxsize * ( double ) ( 1024 * 1024 ) , path ) ; } err = 0 ; } else { return create_user_core ( user_core_fd , pid , ulimit_c ) ; } cleanup_and_exit : if ( dd ) dd_delete ( dd ) ; if ( user_core_fd >= 0 ) unlinkat ( dirfd ( proc_cwd ) , core_basename , 0 ) ; if ( proc_cwd != NULL ) closedir ( proc_cwd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> path ) ; unlink ( path ) ; <S2SV_ModStart> | O_CREAT | O_EXCL <S2SV_ModEnd> , 0600 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19927\n\n```\nCWE-125 static void ttm_put_pages ( struct page * * pages , unsigned npages , int flags , enum ttm_caching_state cstate ) { struct ttm_page_pool * pool = ttm_get_pool ( flags , false , cstate ) ; # ifdef CONFIG_TRANSPARENT_HUGEPAGE struct ttm_page_pool * huge = ttm_get_pool ( flags , true , cstate ) ; # endif unsigned long irq_flags ; unsigned i ; if ( pool == NULL ) { i = 0 ; while ( i < npages ) { # ifdef CONFIG_TRANSPARENT_HUGEPAGE struct page * p = pages [ i ] ; # endif unsigned order = 0 , j ; if ( ! pages [ i ] ) { ++ i ; continue ; } # ifdef CONFIG_TRANSPARENT_HUGEPAGE <S2SV_StartBug> if ( ! ( flags & TTM_PAGE_FLAG_DMA32 ) ) { <S2SV_EndBug> for ( j = 0 ; j < HPAGE_PMD_NR ; ++ j ) if ( p ++ != pages [ i + j ] ) break ; if ( j == HPAGE_PMD_NR ) order = HPAGE_PMD_ORDER ; } # endif if ( page_count ( pages [ i ] ) != 1 ) pr_err ( \"Erroneous<S2SV_blank>page<S2SV_blank>count.<S2SV_blank>Leaking<S2SV_blank>pages.\\\\n\" ) ; __free_pages ( pages [ i ] , order ) ; j = 1 << order ; while ( j ) { pages [ i ++ ] = NULL ; -- j ; } } return ; } i = 0 ; # ifdef CONFIG_TRANSPARENT_HUGEPAGE if ( huge ) { unsigned max_size , n2free ; spin_lock_irqsave ( & huge -> lock , irq_flags ) ; <S2SV_StartBug> while ( i < npages ) { <S2SV_EndBug> struct page * p = pages [ i ] ; unsigned j ; if ( ! p ) break ; for ( j = 0 ; j < HPAGE_PMD_NR ; ++ j ) if ( p ++ != pages [ i + j ] ) break ; if ( j != HPAGE_PMD_NR ) break ; list_add_tail ( & pages [ i ] -> lru , & huge -> list ) ; for ( j = 0 ; j < HPAGE_PMD_NR ; ++ j ) pages [ i ++ ] = NULL ; huge -> npages ++ ; } max_size = _manager -> options . max_size ; max_size /= HPAGE_PMD_NR ; if ( huge -> npages > max_size ) n2free = huge -> npages - max_size ; else n2free = 0 ; spin_unlock_irqrestore ( & huge -> lock , irq_flags ) ; if ( n2free ) ttm_page_pool_free ( huge , n2free , false ) ; } # endif spin_lock_irqsave ( & pool -> lock , irq_flags ) ; while ( i < npages ) { if ( pages [ i ] ) { if ( page_count ( pages [ i ] ) != 1 ) pr_err ( \"Erroneous<S2SV_blank>page<S2SV_blank>count.<S2SV_blank>Leaking<S2SV_blank>pages.\\\\n\" ) ; list_add_tail ( & pages [ i ] -> lru , & pool -> list ) ; pages [ i ] = NULL ; pool -> npages ++ ; } ++ i ; } npages = 0 ; if ( pool -> npages > _manager -> options . max_size ) { npages = pool -> npages - _manager -> options . max_size ; if ( npages < NUM_PAGES_TO_ALLOC ) npages = NUM_PAGES_TO_ALLOC ; } spin_unlock_irqrestore ( & pool -> lock , irq_flags ) ; if ( npages ) ttm_page_pool_free ( pool , npages , false ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & TTM_PAGE_FLAG_DMA32 ) && ( npages - i ) >= HPAGE_PMD_NR <S2SV_ModStart> ; while ( ( npages - i ) >= HPAGE_PMD_NR <S2SV_ModEnd> ) { struct\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19073\n\n```\nCWE-401 static int htc_config_pipe_credits ( struct htc_target * target ) { struct sk_buff * skb ; struct htc_config_pipe_msg * cp_msg ; int ret ; unsigned long time_left ; skb = alloc_skb ( 50 + sizeof ( struct htc_frame_hdr ) , GFP_ATOMIC ) ; if ( ! skb ) { dev_err ( target -> dev , \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>send<S2SV_blank>buffer\\\\n\" ) ; return - ENOMEM ; } skb_reserve ( skb , sizeof ( struct htc_frame_hdr ) ) ; cp_msg = skb_put ( skb , sizeof ( struct htc_config_pipe_msg ) ) ; cp_msg -> message_id = cpu_to_be16 ( HTC_MSG_CONFIG_PIPE_ID ) ; cp_msg -> pipe_id = USB_WLAN_TX_PIPE ; cp_msg -> credits = target -> credits ; target -> htc_flags |= HTC_OP_CONFIG_PIPE_CREDITS ; ret = htc_issue_send ( target , skb , skb -> len , 0 , ENDPOINT0 ) ; if ( ret ) goto err ; time_left = wait_for_completion_timeout ( & target -> cmd_wait , HZ ) ; if ( ! time_left ) { dev_err ( target -> dev , \"HTC<S2SV_blank>credit<S2SV_blank>config<S2SV_blank>timeout\\\\n\" ) ; <S2SV_StartBug> return - ETIMEDOUT ; <S2SV_EndBug> } return 0 ; err : kfree_skb ( skb ) ; return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"HTC<S2SV_blank>credit<S2SV_blank>config<S2SV_blank>timeout\\\\n\" ) ; kfree_skb ( skb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6711\n\n```\nCWE-20 static vpx_codec_err_t vp8_decode ( vpx_codec_alg_priv_t * ctx , const uint8_t * data , unsigned int data_sz , void * user_priv , long deadline ) { vpx_codec_err_t res = VPX_CODEC_OK ; unsigned int resolution_change = 0 ; unsigned int w , h ; if ( ! ctx -> fragments . enabled && ( data == NULL && data_sz == 0 ) ) { return 0 ; } if ( update_fragments ( ctx , data , data_sz , & res ) <= 0 ) return res ; w = ctx -> si . w ; h = ctx -> si . h ; res = vp8_peek_si_internal ( ctx -> fragments . ptrs [ 0 ] , ctx -> fragments . sizes [ 0 ] , & ctx -> si , ctx -> decrypt_cb , ctx -> decrypt_state ) ; if ( ( res == VPX_CODEC_UNSUP_BITSTREAM ) && ! ctx -> si . is_kf ) { res = VPX_CODEC_OK ; } if ( ! ctx -> decoder_init && ! ctx -> si . is_kf ) res = VPX_CODEC_UNSUP_BITSTREAM ; if ( ( ctx -> si . h != h ) || ( ctx -> si . w != w ) ) resolution_change = 1 ; if ( ! res && ! ctx -> decoder_init ) { VP8D_CONFIG oxcf ; oxcf . Width = ctx -> si . w ; oxcf . Height = ctx -> si . h ; oxcf . Version = 9 ; oxcf . postprocess = 0 ; oxcf . max_threads = ctx -> cfg . threads ; oxcf . error_concealment = ( ctx -> base . init_flags & VPX_CODEC_USE_ERROR_CONCEALMENT ) ; if ( ! ctx -> postproc_cfg_set && ( ctx -> base . init_flags & VPX_CODEC_USE_POSTPROC ) ) { ctx -> postproc_cfg . post_proc_flag = VP8_DEBLOCK | VP8_DEMACROBLOCK | VP8_MFQE ; ctx -> postproc_cfg . deblocking_level = 4 ; ctx -> postproc_cfg . noise_level = 0 ; } res = vp8_create_decoder_instances ( & ctx -> yv12_frame_buffers , & oxcf ) ; ctx -> decoder_init = 1 ; } if ( ctx -> decoder_init ) { ctx -> yv12_frame_buffers . pbi [ 0 ] -> decrypt_cb = ctx -> decrypt_cb ; ctx -> yv12_frame_buffers . pbi [ 0 ] -> decrypt_state = ctx -> decrypt_state ; } if ( ! res ) { VP8D_COMP * pbi = ctx -> yv12_frame_buffers . pbi [ 0 ] ; if ( resolution_change ) { VP8_COMMON * const pc = & pbi -> common ; MACROBLOCKD * const xd = & pbi -> mb ; # if CONFIG_MULTITHREAD int i ; # endif pc -> Width = ctx -> si . w ; pc -> Height = ctx -> si . h ; { int prev_mb_rows = pc -> mb_rows ; if ( setjmp ( pbi -> common . error . jmp ) ) { pbi -> common . error . setjmp = 0 ; <S2SV_StartBug> vp8_clear_system_state ( ) ; <S2SV_EndBug> return - 1 ; } pbi -> common . error . setjmp = 1 ; if ( pc -> Width <= 0 ) { pc -> Width = w ; vpx_internal_error ( & pc -> error , VPX_CODEC_CORRUPT_FRAME , \"Invalid<S2SV_blank>frame<S2SV_blank>width\" ) ; } if ( pc -> Height <= 0 ) { pc -> Height = h ; vpx_internal_error ( & pc -> error , VPX_CODEC_CORRUPT_FRAME , \"Invalid<S2SV_blank>frame<S2SV_blank>height\" ) ; } if ( vp8_alloc_frame_buffers ( pc , pc -> Width , pc -> Height ) ) vpx_internal_error ( & pc -> error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>frame<S2SV_blank>buffers\" ) ; xd -> pre = pc -> yv12_fb [ pc -> lst_fb_idx ] ; xd -> dst = pc -> yv12_fb [ pc -> new_fb_idx ] ; # if CONFIG_MULTITHREAD for ( i = 0 ; i < pbi -> allocated_decoding_thread_count ; i ++ ) { pbi -> mb_row_di [ i ] . mbd . dst = pc -> yv12_fb [ pc -> new_fb_idx ] ; vp8_build_block_doffsets ( & pbi -> mb_row_di [ i ] . mbd ) ; } # endif vp8_build_block_doffsets ( & pbi -> mb ) ; # if CONFIG_ERROR_CONCEALMENT if ( pbi -> ec_enabled ) { pc -> prev_mip = vpx_calloc ( ( pc -> mb_cols + 1 ) * ( pc -> mb_rows + 1 ) , sizeof ( MODE_INFO ) ) ; if ( ! pc -> prev_mip ) { vp8_de_alloc_frame_buffers ( pc ) ; vpx_internal_error ( & pc -> error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate\" \"last<S2SV_blank>frame<S2SV_blank>MODE_INFO<S2SV_blank>array\" ) ; } pc -> prev_mi = pc -> prev_mip + pc -> mode_info_stride + 1 ; if ( vp8_alloc_overlap_lists ( pbi ) ) vpx_internal_error ( & pc -> error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>overlap<S2SV_blank>lists<S2SV_blank>\" \"for<S2SV_blank>error<S2SV_blank>concealment\" ) ; } # endif # if CONFIG_MULTITHREAD if ( pbi -> b_multithreaded_rd ) vp8mt_alloc_temp_buffers ( pbi , pc -> Width , prev_mb_rows ) ; # else ( void ) prev_mb_rows ; # endif } pbi -> common . error . setjmp = 0 ; pbi -> common . fb_idx_ref_cnt [ 0 ] = 0 ; } pbi -> fragments = ctx -> fragments ; ctx -> user_priv = user_priv ; if ( vp8dx_receive_compressed_data ( pbi , data_sz , data , deadline ) ) { res = update_error_state ( ctx , & pbi -> common . error ) ; } ctx -> fragments . count = 0 ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; ctx -> si . w = 0 ; ctx -> si . h = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static int __key_instantiate_and_link ( struct key * key , struct key_preparsed_payload * prep , struct key * keyring , struct key * authkey , struct assoc_array_edit * * _edit ) { int ret , awaken ; key_check ( key ) ; key_check ( keyring ) ; awaken = 0 ; ret = - EBUSY ; mutex_lock ( & key_construction_mutex ) ; <S2SV_StartBug> if ( ! test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) { <S2SV_EndBug> ret = key -> type -> instantiate ( key , prep ) ; if ( ret == 0 ) { atomic_inc ( & key -> user -> nikeys ) ; <S2SV_StartBug> set_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ; <S2SV_EndBug> if ( test_and_clear_bit ( KEY_FLAG_USER_CONSTRUCT , & key -> flags ) ) awaken = 1 ; if ( keyring ) { if ( test_bit ( KEY_FLAG_KEEP , & keyring -> flags ) ) set_bit ( KEY_FLAG_KEEP , & key -> flags ) ; __key_link ( key , _edit ) ; } if ( authkey ) key_revoke ( authkey ) ; if ( prep -> expiry != TIME_T_MAX ) { key -> expiry = prep -> expiry ; key_schedule_gc ( prep -> expiry + key_gc_delay ) ; } } } mutex_unlock ( & key_construction_mutex ) ; if ( awaken ) wake_up_bit ( & key -> flags , KEY_FLAG_USER_CONSTRUCT ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key -> state == KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) { ret <S2SV_ModStart> nikeys ) ; mark_key_instantiated ( key , 0 <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7533\n\n```\nCWE-125 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; one = 1 ; image = AcquireImage ( image_info , exception ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> resolution . x = BitmapHeader1 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> resolution . x = BitmapHeader2 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; UnpackRaster : if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp , exception ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; image -> rows = Bitmap2Header1 . Height ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { size_t one ; one = 1 ; image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) <S2SV_StartBug> ldblk , sizeof ( * BImgBuff ) ) ; <S2SV_EndBug> if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( image , BImgBuff , i , bpp , exception ) ; } if ( BImgBuff ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; ; break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp , exception ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t ) ldblk + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4220\n\n```\nCWE-000 asmlinkage void bad_mode ( struct pt_regs * regs , int reason , unsigned int esr ) <S2SV_StartBug> { <S2SV_EndBug> console_verbose ( ) ; pr_crit ( \"Bad<S2SV_blank>mode<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>handler<S2SV_blank>detected,<S2SV_blank>code<S2SV_blank>0x%08x\\\\n\" , handler [ reason ] , esr ) ; <S2SV_StartBug> die ( \"Oops<S2SV_blank>-<S2SV_blank>bad<S2SV_blank>mode\" , regs , 0 ) ; <S2SV_EndBug> local_irq_disable ( ) ; panic ( \"bad<S2SV_blank>mode\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> esr ) { siginfo_t info ; void __user * pc = ( void __user * ) instruction_pointer ( regs ) ; <S2SV_ModStart> esr ) ; __show_regs ( regs ) ; info . si_signo = SIGILL ; info . si_errno = 0 ; info . si_code = ILL_ILLOPC ; info . si_addr = pc ; arm64_notify_die <S2SV_ModEnd> ( \"Oops<S2SV_blank>-<S2SV_blank>bad<S2SV_blank>mode\" , <S2SV_ModStart> , regs , & info , 0 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6547\n\n```\nCWE-200 static long __tun_chr_ioctl ( struct file * file , unsigned int cmd , unsigned long arg , int ifreq_len ) { struct tun_file * tfile = file -> private_data ; struct tun_struct * tun ; void __user * argp = ( void __user * ) arg ; struct sock_fprog fprog ; struct ifreq ifr ; int sndbuf ; int vnet_hdr_sz ; int ret ; <S2SV_StartBug> if ( cmd == TUNSETIFF || _IOC_TYPE ( cmd ) == 0x89 ) <S2SV_EndBug> if ( copy_from_user ( & ifr , argp , ifreq_len ) ) <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> if ( cmd == TUNGETFEATURES ) { return put_user ( IFF_TUN | IFF_TAP | IFF_NO_PI | IFF_ONE_QUEUE | IFF_VNET_HDR , ( unsigned int __user * ) argp ) ; } rtnl_lock ( ) ; tun = __tun_get ( tfile ) ; if ( cmd == TUNSETIFF && ! tun ) { ifr . ifr_name [ IFNAMSIZ - 1 ] = '\\\\0' ; ret = tun_set_iff ( tfile -> net , file , & ifr ) ; if ( ret ) goto unlock ; if ( copy_to_user ( argp , & ifr , ifreq_len ) ) ret = - EFAULT ; goto unlock ; } ret = - EBADFD ; if ( ! tun ) goto unlock ; tun_debug ( KERN_INFO , tun , \"tun_chr_ioctl<S2SV_blank>cmd<S2SV_blank>%d\\\\n\" , cmd ) ; ret = 0 ; switch ( cmd ) { case TUNGETIFF : ret = tun_get_iff ( current -> nsproxy -> net_ns , tun , & ifr ) ; if ( ret ) break ; if ( copy_to_user ( argp , & ifr , ifreq_len ) ) ret = - EFAULT ; break ; case TUNSETNOCSUM : tun_debug ( KERN_INFO , tun , \"ignored:<S2SV_blank>set<S2SV_blank>checksum<S2SV_blank>%s\\\\n\" , arg ? \"disabled\" : \"enabled\" ) ; break ; case TUNSETPERSIST : if ( arg ) tun -> flags |= TUN_PERSIST ; else tun -> flags &= ~ TUN_PERSIST ; tun_debug ( KERN_INFO , tun , \"persist<S2SV_blank>%s\\\\n\" , arg ? \"enabled\" : \"disabled\" ) ; break ; case TUNSETOWNER : tun -> owner = ( uid_t ) arg ; tun_debug ( KERN_INFO , tun , \"owner<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%d\\\\n\" , tun -> owner ) ; break ; case TUNSETGROUP : tun -> group = ( gid_t ) arg ; tun_debug ( KERN_INFO , tun , \"group<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%d\\\\n\" , tun -> group ) ; break ; case TUNSETLINK : if ( tun -> dev -> flags & IFF_UP ) { tun_debug ( KERN_INFO , tun , \"Linktype<S2SV_blank>set<S2SV_blank>failed<S2SV_blank>because<S2SV_blank>interface<S2SV_blank>is<S2SV_blank>up\\\\n\" ) ; ret = - EBUSY ; } else { tun -> dev -> type = ( int ) arg ; tun_debug ( KERN_INFO , tun , \"linktype<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%d\\\\n\" , tun -> dev -> type ) ; ret = 0 ; } break ; # ifdef TUN_DEBUG case TUNSETDEBUG : tun -> debug = arg ; break ; # endif case TUNSETOFFLOAD : ret = set_offload ( tun , arg ) ; break ; case TUNSETTXFILTER : ret = - EINVAL ; if ( ( tun -> flags & TUN_TYPE_MASK ) != TUN_TAP_DEV ) break ; ret = update_filter ( & tun -> txflt , ( void __user * ) arg ) ; break ; case SIOCGIFHWADDR : memcpy ( ifr . ifr_hwaddr . sa_data , tun -> dev -> dev_addr , ETH_ALEN ) ; ifr . ifr_hwaddr . sa_family = tun -> dev -> type ; if ( copy_to_user ( argp , & ifr , ifreq_len ) ) ret = - EFAULT ; break ; case SIOCSIFHWADDR : tun_debug ( KERN_DEBUG , tun , \"set<S2SV_blank>hw<S2SV_blank>address:<S2SV_blank>%pM\\\\n\" , ifr . ifr_hwaddr . sa_data ) ; ret = dev_set_mac_address ( tun -> dev , & ifr . ifr_hwaddr ) ; break ; case TUNGETSNDBUF : sndbuf = tun -> socket . sk -> sk_sndbuf ; if ( copy_to_user ( argp , & sndbuf , sizeof ( sndbuf ) ) ) ret = - EFAULT ; break ; case TUNSETSNDBUF : if ( copy_from_user ( & sndbuf , argp , sizeof ( sndbuf ) ) ) { ret = - EFAULT ; break ; } tun -> socket . sk -> sk_sndbuf = sndbuf ; break ; case TUNGETVNETHDRSZ : vnet_hdr_sz = tun -> vnet_hdr_sz ; if ( copy_to_user ( argp , & vnet_hdr_sz , sizeof ( vnet_hdr_sz ) ) ) ret = - EFAULT ; break ; case TUNSETVNETHDRSZ : if ( copy_from_user ( & vnet_hdr_sz , argp , sizeof ( vnet_hdr_sz ) ) ) { ret = - EFAULT ; break ; } if ( vnet_hdr_sz < ( int ) sizeof ( struct virtio_net_hdr ) ) { ret = - EINVAL ; break ; } tun -> vnet_hdr_sz = vnet_hdr_sz ; break ; case TUNATTACHFILTER : ret = - EINVAL ; if ( ( tun -> flags & TUN_TYPE_MASK ) != TUN_TAP_DEV ) break ; ret = - EFAULT ; if ( copy_from_user ( & fprog , argp , sizeof ( fprog ) ) ) break ; ret = sk_attach_filter ( & fprog , tun -> socket . sk ) ; break ; case TUNDETACHFILTER : ret = - EINVAL ; if ( ( tun -> flags & TUN_TYPE_MASK ) != TUN_TAP_DEV ) break ; ret = sk_detach_filter ( tun -> socket . sk ) ; break ; default : ret = - EINVAL ; break ; } unlock : rtnl_unlock ( ) ; if ( tun ) tun_put ( tun ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0x89 ) { <S2SV_ModStart> return - EFAULT ; } else memset ( & ifr , 0 , sizeof ( ifr ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18120\n\n```\nCWE-415 static Gif_Stream * read_gif ( Gif_Reader * grr , int read_flags , const char * landmark , Gif_ReadErrorHandler handler ) { Gif_Stream * gfs ; Gif_Image * gfi ; Gif_Context gfc ; int unknown_block_type = 0 ; if ( gifgetc ( grr ) != 'G' || gifgetc ( grr ) != 'I' || gifgetc ( grr ) != 'F' ) return 0 ; ( void ) gifgetc ( grr ) ; ( void ) gifgetc ( grr ) ; ( void ) gifgetc ( grr ) ; gfs = Gif_NewStream ( ) ; gfi = Gif_NewImage ( ) ; gfc . stream = gfs ; gfc . prefix = Gif_NewArray ( Gif_Code , GIF_MAX_CODE ) ; gfc . suffix = Gif_NewArray ( uint8_t , GIF_MAX_CODE ) ; gfc . length = Gif_NewArray ( uint16_t , GIF_MAX_CODE ) ; gfc . handler = handler ; gfc . gfi = gfi ; gfc . errors [ 0 ] = gfc . errors [ 1 ] = 0 ; if ( ! gfs || ! gfi || ! gfc . prefix || ! gfc . suffix || ! gfc . length ) goto done ; gfs -> landmark = landmark ; GIF_DEBUG ( ( \"\\\\nGIF<S2SV_blank>\" ) ) ; if ( ! read_logical_screen_descriptor ( gfs , grr ) ) goto done ; GIF_DEBUG ( ( \"logscrdesc<S2SV_blank>\" ) ) ; while ( ! gifeof ( grr ) ) { uint8_t block = gifgetbyte ( grr ) ; switch ( block ) { case ',' : GIF_DEBUG ( ( \"imageread<S2SV_blank>%d<S2SV_blank>\" , gfs -> nimages ) ) ; gfi -> identifier = last_name ; last_name = 0 ; if ( ! Gif_AddImage ( gfs , gfi ) ) goto done ; else if ( ! read_image ( grr , & gfc , gfi , read_flags ) ) { Gif_RemoveImage ( gfs , gfs -> nimages - 1 ) ; gfi = 0 ; goto done ; } gfc . gfi = gfi = Gif_NewImage ( ) ; if ( ! gfi ) goto done ; break ; case ';' : GIF_DEBUG ( ( \"term\\\\n\" ) ) ; goto done ; case '!' : block = gifgetbyte ( grr ) ; GIF_DEBUG ( ( \"ext(0x%02X)<S2SV_blank>\" , block ) ) ; switch ( block ) { case 0xF9 : read_graphic_control_extension ( & gfc , gfi , grr ) ; break ; case 0xCE : last_name = suck_data ( last_name , 0 , grr ) ; break ; case 0xFE : if ( ! read_comment_extension ( gfi , grr ) ) goto done ; break ; case 0xFF : read_application_extension ( & gfc , grr ) ; break ; default : read_unknown_extension ( & gfc , grr , block , 0 , 0 ) ; break ; } break ; default : if ( ! unknown_block_type ) { char buf [ 256 ] ; sprintf ( buf , \"unknown<S2SV_blank>block<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>at<S2SV_blank>file<S2SV_blank>offset<S2SV_blank>%u\" , block , grr -> pos - 1 ) ; gif_read_error ( & gfc , 1 , buf ) ; unknown_block_type = 1 ; } break ; } } done : if ( gfs && gfi ) { Gif_Extension * gfex ; gfs -> end_comment = gfi -> comment ; gfi -> comment = 0 ; gfs -> end_extension_list = gfi -> extension_list ; gfi -> extension_list = 0 ; for ( gfex = gfs -> end_extension_list ; gfex ; gfex = gfex -> next ) gfex -> image = NULL ; } Gif_DeleteImage ( gfi ) ; Gif_DeleteArray ( last_name ) ; Gif_DeleteArray ( gfc . prefix ) ; Gif_DeleteArray ( gfc . suffix ) ; Gif_DeleteArray ( gfc . length ) ; gfc . gfi = 0 ; <S2SV_StartBug> if ( gfs ) <S2SV_EndBug> gfs -> errors = gfc . errors [ 1 ] ; if ( gfs && gfc . errors [ 1 ] == 0 && ! ( read_flags & GIF_READ_TRAILING_GARBAGE_OK ) && ! grr -> eofer ( grr ) ) gif_read_error ( & gfc , 0 , \"trailing<S2SV_blank>garbage<S2SV_blank>after<S2SV_blank>GIF<S2SV_blank>ignored\" ) ; gif_read_error ( & gfc , - 1 , 0 ) ; return gfs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; last_name = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 <S2SV_StartBug> void bpf_map_inc ( struct bpf_map * map , bool uref ) <S2SV_EndBug> { <S2SV_StartBug> atomic_inc ( & map -> refcnt ) ; <S2SV_EndBug> if ( uref ) atomic_inc ( & map -> usercnt ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> struct bpf_map * <S2SV_ModEnd> bpf_map_inc ( struct <S2SV_ModStart> uref ) { if ( atomic_inc_return ( & map -> refcnt ) > BPF_MAX_REFCNT ) { atomic_dec <S2SV_ModEnd> ( & map <S2SV_ModStart> refcnt ) ; return ERR_PTR ( - EBUSY ) ; } <S2SV_ModStart> usercnt ) ; return map ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5354\n\n```\nCWE-476 static int dissect_u3v ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree , void * data ) { gint offset = 0 ; proto_tree * u3v_tree = NULL , * ccd_tree_flag , * u3v_telegram_tree = NULL , * ccd_tree = NULL ; gint data_length = 0 ; gint req_id = 0 ; gint command_id = - 1 ; gint status = 0 ; guint prefix = 0 ; proto_item * ti = NULL ; proto_item * item = NULL ; const char * command_string ; usb_conv_info_t * usb_conv_info ; gint stream_detected = FALSE ; gint control_detected = FALSE ; u3v_conv_info_t * u3v_conv_info = NULL ; gencp_transaction_t * gencp_trans = NULL ; usb_conv_info = ( usb_conv_info_t * ) data ; u3v_conv_info = ( u3v_conv_info_t * ) usb_conv_info -> class_data ; if ( ! u3v_conv_info ) { u3v_conv_info = wmem_new0 ( wmem_file_scope ( ) , u3v_conv_info_t ) ; <S2SV_StartBug> usb_conv_info -> class_data = u3v_conv_info ; <S2SV_EndBug> } prefix = tvb_get_letohl ( tvb , 0 ) ; if ( ( tvb_reported_length ( tvb ) >= 4 ) && ( ( U3V_CONTROL_PREFIX == prefix ) || ( U3V_EVENT_PREFIX == prefix ) ) ) { control_detected = TRUE ; } if ( ( ( tvb_reported_length ( tvb ) >= 4 ) && ( ( U3V_STREAM_LEADER_PREFIX == prefix ) || ( U3V_STREAM_TRAILER_PREFIX == prefix ) ) ) || ( usb_conv_info -> endpoint == u3v_conv_info -> ep_stream ) ) { stream_detected = TRUE ; } if ( control_detected || stream_detected ) { if ( usb_conv_info -> interfaceClass == IF_CLASS_UNKNOWN && usb_conv_info -> interfaceSubclass == IF_SUBCLASS_UNKNOWN ) { usb_conv_info -> interfaceClass = IF_CLASS_MISCELLANEOUS ; usb_conv_info -> interfaceSubclass = IF_SUBCLASS_MISC_U3V ; } } if ( control_detected ) { col_set_str ( pinfo -> cinfo , COL_PROTOCOL , \"U3V\" ) ; col_clear ( pinfo -> cinfo , COL_INFO ) ; ti = proto_tree_add_item ( tree , proto_u3v , tvb , offset , - 1 , ENC_NA ) ; u3v_tree = proto_item_add_subtree ( ti , ett_u3v ) ; prefix = tvb_get_letohl ( tvb , offset ) ; command_id = tvb_get_letohs ( tvb , offset + 6 ) ; if ( ( prefix == U3V_CONTROL_PREFIX || prefix == U3V_EVENT_PREFIX ) && ( ( command_id % 2 ) == 0 ) ) { command_string = val_to_str ( command_id , command_names , \"Unknown<S2SV_blank>Command<S2SV_blank>(0x%x)\" ) ; item = proto_tree_add_item ( u3v_tree , hf_u3v_ccd_cmd , tvb , offset , 8 , ENC_NA ) ; proto_item_append_text ( item , \":<S2SV_blank>%s\" , command_string ) ; ccd_tree = proto_item_add_subtree ( item , ett_u3v_cmd ) ; proto_tree_add_item ( ccd_tree , hf_u3v_gencp_prefix , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; item = proto_tree_add_item ( ccd_tree , hf_u3v_flag , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; ccd_tree_flag = proto_item_add_subtree ( item , ett_u3v_flags ) ; proto_tree_add_item ( ccd_tree_flag , hf_u3v_acknowledge_required_flag , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; offset += 2 ; col_append_fstr ( pinfo -> cinfo , COL_INFO , \"><S2SV_blank>%s<S2SV_blank>\" , command_string ) ; } else if ( prefix == U3V_CONTROL_PREFIX && ( ( command_id % 2 ) == 1 ) ) { command_string = val_to_str ( command_id , command_names , \"Unknown<S2SV_blank>Acknowledge<S2SV_blank>(0x%x)\" ) ; item = proto_tree_add_item ( u3v_tree , hf_u3v_ccd_ack , tvb , offset , 8 , ENC_NA ) ; proto_item_append_text ( item , \":<S2SV_blank>%s\" , command_string ) ; ccd_tree = proto_item_add_subtree ( item , ett_u3v_ack ) ; proto_tree_add_item ( ccd_tree , hf_u3v_gencp_prefix , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( ccd_tree , hf_u3v_status , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; status = tvb_get_letohs ( tvb , offset ) ; offset += 2 ; col_append_fstr ( pinfo -> cinfo , COL_INFO , \"<<S2SV_blank>%s<S2SV_blank>%s\" , command_string , val_to_str ( status , status_names_short , \"Unknown<S2SV_blank>status<S2SV_blank>(0x%04X)\" ) ) ; } else { return 0 ; } proto_tree_add_item ( ccd_tree , hf_u3v_command_id , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; offset += 2 ; proto_tree_add_item ( ccd_tree , hf_u3v_length , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; data_length = tvb_get_letohs ( tvb , offset ) ; offset += 2 ; proto_tree_add_item ( ccd_tree , hf_u3v_request_id , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; req_id = tvb_get_letohs ( tvb , offset ) ; offset += 2 ; u3v_telegram_tree = proto_item_add_subtree ( u3v_tree , ett_u3v ) ; if ( ! PINFO_FD_VISITED ( pinfo ) ) { if ( ( command_id % 2 ) == 0 ) { gencp_trans = wmem_new ( wmem_file_scope ( ) , gencp_transaction_t ) ; gencp_trans -> cmd_frame = pinfo -> fd -> num ; gencp_trans -> ack_frame = 0 ; gencp_trans -> cmd_time = pinfo -> fd -> abs_ts ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_u3v , req_id , gencp_trans ) ; u3v_conv_info -> trans_info = gencp_trans ; } else { gencp_trans = u3v_conv_info -> trans_info ; if ( gencp_trans ) { gencp_trans -> ack_frame = pinfo -> fd -> num ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_u3v , req_id , gencp_trans ) ; } } } else { gencp_trans = ( gencp_transaction_t * ) p_get_proto_data ( wmem_file_scope ( ) , pinfo , proto_u3v , req_id ) ; } if ( ! gencp_trans ) { gencp_trans = wmem_new ( wmem_packet_scope ( ) , gencp_transaction_t ) ; gencp_trans -> cmd_frame = 0 ; gencp_trans -> ack_frame = 0 ; gencp_trans -> cmd_time = pinfo -> fd -> abs_ts ; } switch ( command_id ) { case U3V_READMEM_CMD : dissect_u3v_read_mem_cmd ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; break ; case U3V_WRITEMEM_CMD : dissect_u3v_write_mem_cmd ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; break ; case U3V_EVENT_CMD : dissect_u3v_event_cmd ( u3v_telegram_tree , tvb , pinfo , offset , data_length ) ; break ; case U3V_READMEM_ACK : if ( U3V_STATUS_GENCP_SUCCESS == status ) { dissect_u3v_read_mem_ack ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; } break ; case U3V_WRITEMEM_ACK : dissect_u3v_write_mem_ack ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; break ; case U3V_PENDING_ACK : dissect_u3v_pending_ack ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; break ; default : proto_tree_add_item ( u3v_telegram_tree , hf_u3v_payloaddata , tvb , offset , data_length , ENC_NA ) ; break ; } return data_length + 12 ; } else if ( stream_detected ) { u3v_conv_info = ( u3v_conv_info_t * ) usb_conv_info -> class_data ; u3v_conv_info -> ep_stream = usb_conv_info -> endpoint ; col_set_str ( pinfo -> cinfo , COL_PROTOCOL , \"U3V\" ) ; col_clear ( pinfo -> cinfo , COL_INFO ) ; ti = proto_tree_add_item ( tree , proto_u3v , tvb , offset , - 1 , ENC_NA ) ; u3v_tree = proto_item_add_subtree ( ti , ett_u3v ) ; if ( tvb_captured_length ( tvb ) >= 4 ) { prefix = tvb_get_letohl ( tvb , offset ) ; switch ( prefix ) { case U3V_STREAM_LEADER_PREFIX : dissect_u3v_stream_leader ( u3v_tree , tvb , pinfo , usb_conv_info ) ; break ; case U3V_STREAM_TRAILER_PREFIX : dissect_u3v_stream_trailer ( u3v_tree , tvb , pinfo , usb_conv_info ) ; break ; default : dissect_u3v_stream_payload ( u3v_tree , tvb , pinfo , usb_conv_info ) ; break ; } } return tvb_captured_length ( tvb ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> class_data = u3v_conv_info ; usb_conv_info -> class_data_type = USB_CONV_U3V ; } else if ( usb_conv_info -> class_data_type != USB_CONV_U3V ) { return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20503\n\n```\nCWE-125 int sctp_load_addresses_from_init ( struct sctp_tcb * stcb , struct mbuf * m , int offset , int limit , struct sockaddr * src , struct sockaddr * dst , struct sockaddr * altsa , uint16_t port ) { struct sctp_inpcb * inp ; struct sctp_nets * net , * nnet , * net_tmp ; struct sctp_paramhdr * phdr , param_buf ; struct sctp_tcb * stcb_tmp ; uint16_t ptype , plen ; struct sockaddr * sa ; uint8_t random_store [ SCTP_PARAM_BUFFER_SIZE ] ; struct sctp_auth_random * p_random = NULL ; uint16_t random_len = 0 ; uint8_t hmacs_store [ SCTP_PARAM_BUFFER_SIZE ] ; struct sctp_auth_hmac_algo * hmacs = NULL ; uint16_t hmacs_len = 0 ; uint8_t saw_asconf = 0 ; uint8_t saw_asconf_ack = 0 ; uint8_t chunks_store [ SCTP_PARAM_BUFFER_SIZE ] ; struct sctp_auth_chunk_list * chunks = NULL ; uint16_t num_chunks = 0 ; sctp_key_t * new_key ; uint32_t keylen ; int got_random = 0 , got_hmacs = 0 , got_chklist = 0 ; uint8_t peer_supports_ecn ; uint8_t peer_supports_prsctp ; uint8_t peer_supports_auth ; uint8_t peer_supports_asconf ; uint8_t peer_supports_asconf_ack ; uint8_t peer_supports_reconfig ; uint8_t peer_supports_nrsack ; uint8_t peer_supports_pktdrop ; uint8_t peer_supports_idata ; # ifdef INET struct sockaddr_in sin ; # endif # ifdef INET6 struct sockaddr_in6 sin6 ; # endif # ifdef INET memset ( & sin , 0 , sizeof ( sin ) ) ; sin . sin_family = AF_INET ; # ifdef HAVE_SIN_LEN sin . sin_len = sizeof ( sin ) ; # endif sin . sin_port = stcb -> rport ; # endif # ifdef INET6 memset ( & sin6 , 0 , sizeof ( sin6 ) ) ; sin6 . sin6_family = AF_INET6 ; # ifdef HAVE_SIN6_LEN sin6 . sin6_len = sizeof ( struct sockaddr_in6 ) ; # endif sin6 . sin6_port = stcb -> rport ; # endif if ( altsa ) { sa = altsa ; } else { sa = src ; } peer_supports_idata = 0 ; peer_supports_ecn = 0 ; peer_supports_prsctp = 0 ; peer_supports_auth = 0 ; peer_supports_asconf = 0 ; peer_supports_reconfig = 0 ; peer_supports_nrsack = 0 ; peer_supports_pktdrop = 0 ; TAILQ_FOREACH ( net , & stcb -> asoc . nets , sctp_next ) { net -> dest_state |= SCTP_ADDR_NOT_IN_ASSOC ; } inp = stcb -> sctp_ep ; atomic_add_int ( & stcb -> asoc . refcnt , 1 ) ; stcb_tmp = sctp_findassociation_ep_addr ( & inp , sa , & net_tmp , dst , stcb ) ; atomic_add_int ( & stcb -> asoc . refcnt , - 1 ) ; if ( ( stcb_tmp == NULL && inp == stcb -> sctp_ep ) || inp == NULL ) { switch ( sa -> sa_family ) { # ifdef INET case AF_INET : if ( stcb -> asoc . scope . ipv4_addr_legal ) { if ( sctp_add_remote_addr ( stcb , sa , NULL , port , SCTP_DONOT_SETSCOPE , SCTP_LOAD_ADDR_2 ) ) { return ( - 1 ) ; } } break ; # endif # ifdef INET6 case AF_INET6 : if ( stcb -> asoc . scope . ipv6_addr_legal ) { if ( sctp_add_remote_addr ( stcb , sa , NULL , port , SCTP_DONOT_SETSCOPE , SCTP_LOAD_ADDR_3 ) ) { return ( - 2 ) ; } } break ; # endif # if defined ( __Userspace__ ) case AF_CONN : if ( stcb -> asoc . scope . conn_addr_legal ) { if ( sctp_add_remote_addr ( stcb , sa , NULL , port , SCTP_DONOT_SETSCOPE , SCTP_LOAD_ADDR_3 ) ) { return ( - 2 ) ; } } break ; # endif default : break ; } } else { if ( net_tmp != NULL && stcb_tmp == stcb ) { net_tmp -> dest_state &= ~ SCTP_ADDR_NOT_IN_ASSOC ; } else if ( stcb_tmp != stcb ) { if ( stcb_tmp ) SCTP_TCB_UNLOCK ( stcb_tmp ) ; return ( - 3 ) ; } } if ( stcb -> asoc . state == 0 ) { return ( - 4 ) ; } phdr = sctp_get_next_param ( m , offset , & param_buf , sizeof ( param_buf ) ) ; while ( phdr ) { ptype = ntohs ( phdr -> param_type ) ; plen = ntohs ( phdr -> param_length ) ; if ( offset + plen > limit ) { break ; } <S2SV_StartBug> if ( plen == 0 ) { <S2SV_EndBug> break ; } # ifdef INET if ( ptype == SCTP_IPV4_ADDRESS ) { if ( stcb -> asoc . scope . ipv4_addr_legal ) { struct sctp_ipv4addr_param * p4 , p4_buf ; phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) & p4_buf , sizeof ( p4_buf ) ) ; if ( plen != sizeof ( struct sctp_ipv4addr_param ) || phdr == NULL ) { return ( - 5 ) ; } p4 = ( struct sctp_ipv4addr_param * ) phdr ; sin . sin_addr . s_addr = p4 -> addr ; if ( IN_MULTICAST ( ntohl ( sin . sin_addr . s_addr ) ) ) { goto next_param ; } if ( ( sin . sin_addr . s_addr == INADDR_BROADCAST ) || ( sin . sin_addr . s_addr == INADDR_ANY ) ) { goto next_param ; } sa = ( struct sockaddr * ) & sin ; inp = stcb -> sctp_ep ; atomic_add_int ( & stcb -> asoc . refcnt , 1 ) ; stcb_tmp = sctp_findassociation_ep_addr ( & inp , sa , & net , dst , stcb ) ; atomic_add_int ( & stcb -> asoc . refcnt , - 1 ) ; if ( ( stcb_tmp == NULL && inp == stcb -> sctp_ep ) || inp == NULL ) { add_it_now : if ( stcb -> asoc . state == 0 ) { return ( - 7 ) ; } if ( sctp_add_remote_addr ( stcb , sa , NULL , port , SCTP_DONOT_SETSCOPE , SCTP_LOAD_ADDR_4 ) ) { return ( - 8 ) ; } } else if ( stcb_tmp == stcb ) { if ( stcb -> asoc . state == 0 ) { return ( - 10 ) ; } if ( net != NULL ) { net -> dest_state &= ~ SCTP_ADDR_NOT_IN_ASSOC ; } } else { if ( stcb_tmp ) { if ( SCTP_GET_STATE ( stcb_tmp ) == SCTP_STATE_COOKIE_WAIT ) { struct mbuf * op_err ; char msg [ SCTP_DIAG_INFO_LEN ] ; snprintf ( msg , sizeof ( msg ) , \"%s:%d<S2SV_blank>at<S2SV_blank>%s\" , __FILE__ , __LINE__ , __func__ ) ; op_err = sctp_generate_cause ( SCTP_BASE_SYSCTL ( sctp_diag_info_code ) , msg ) ; sctp_abort_an_association ( stcb_tmp -> sctp_ep , stcb_tmp , op_err , SCTP_SO_NOT_LOCKED ) ; goto add_it_now ; } SCTP_TCB_UNLOCK ( stcb_tmp ) ; } if ( stcb -> asoc . state == 0 ) { return ( - 12 ) ; } return ( - 13 ) ; } } } else # endif # ifdef INET6 if ( ptype == SCTP_IPV6_ADDRESS ) { if ( stcb -> asoc . scope . ipv6_addr_legal ) { struct sctp_ipv6addr_param * p6 , p6_buf ; phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) & p6_buf , sizeof ( p6_buf ) ) ; if ( plen != sizeof ( struct sctp_ipv6addr_param ) || phdr == NULL ) { return ( - 14 ) ; } p6 = ( struct sctp_ipv6addr_param * ) phdr ; memcpy ( ( caddr_t ) & sin6 . sin6_addr , p6 -> addr , sizeof ( p6 -> addr ) ) ; if ( IN6_IS_ADDR_MULTICAST ( & sin6 . sin6_addr ) ) { goto next_param ; } if ( IN6_IS_ADDR_LINKLOCAL ( & sin6 . sin6_addr ) ) { goto next_param ; } sa = ( struct sockaddr * ) & sin6 ; inp = stcb -> sctp_ep ; atomic_add_int ( & stcb -> asoc . refcnt , 1 ) ; stcb_tmp = sctp_findassociation_ep_addr ( & inp , sa , & net , dst , stcb ) ; atomic_add_int ( & stcb -> asoc . refcnt , - 1 ) ; if ( stcb_tmp == NULL && ( inp == stcb -> sctp_ep || inp == NULL ) ) { add_it_now6 : if ( stcb -> asoc . state == 0 ) { return ( - 16 ) ; } if ( sctp_add_remote_addr ( stcb , sa , NULL , port , SCTP_DONOT_SETSCOPE , SCTP_LOAD_ADDR_5 ) ) { return ( - 17 ) ; } } else if ( stcb_tmp == stcb ) { if ( stcb -> asoc . state == 0 ) { return ( - 19 ) ; } if ( net != NULL ) { net -> dest_state &= ~ SCTP_ADDR_NOT_IN_ASSOC ; } } else { if ( stcb_tmp ) { if ( SCTP_GET_STATE ( stcb_tmp ) == SCTP_STATE_COOKIE_WAIT ) { struct mbuf * op_err ; char msg [ SCTP_DIAG_INFO_LEN ] ; snprintf ( msg , sizeof ( msg ) , \"%s:%d<S2SV_blank>at<S2SV_blank>%s\" , __FILE__ , __LINE__ , __func__ ) ; op_err = sctp_generate_cause ( SCTP_BASE_SYSCTL ( sctp_diag_info_code ) , msg ) ; sctp_abort_an_association ( stcb_tmp -> sctp_ep , stcb_tmp , op_err , SCTP_SO_NOT_LOCKED ) ; goto add_it_now6 ; } SCTP_TCB_UNLOCK ( stcb_tmp ) ; } if ( stcb -> asoc . state == 0 ) { return ( - 21 ) ; } return ( - 22 ) ; } } } else # endif if ( ptype == SCTP_ECN_CAPABLE ) { peer_supports_ecn = 1 ; } else if ( ptype == SCTP_ULP_ADAPTATION ) { if ( stcb -> asoc . state != SCTP_STATE_OPEN ) { struct sctp_adaptation_layer_indication ai , * aip ; phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) & ai , sizeof ( ai ) ) ; aip = ( struct sctp_adaptation_layer_indication * ) phdr ; if ( aip ) { stcb -> asoc . peers_adaptation = ntohl ( aip -> indication ) ; stcb -> asoc . adaptation_needed = 1 ; } } } else if ( ptype == SCTP_SET_PRIM_ADDR ) { struct sctp_asconf_addr_param lstore , * fee ; int lptype ; struct sockaddr * lsa = NULL ; # ifdef INET struct sctp_asconf_addrv4_param * fii ; # endif if ( stcb -> asoc . asconf_supported == 0 ) { return ( - 100 ) ; } if ( plen > sizeof ( lstore ) ) { return ( - 23 ) ; } <S2SV_StartBug> phdr = sctp_get_next_param ( m , offset , <S2SV_EndBug> ( struct sctp_paramhdr * ) & lstore , plen ) ; if ( phdr == NULL ) { return ( - 24 ) ; } fee = ( struct sctp_asconf_addr_param * ) phdr ; lptype = ntohs ( fee -> addrp . ph . param_type ) ; switch ( lptype ) { # ifdef INET case SCTP_IPV4_ADDRESS : if ( plen != sizeof ( struct sctp_asconf_addrv4_param ) ) { SCTP_PRINTF ( \"Sizeof<S2SV_blank>setprim<S2SV_blank>in<S2SV_blank>init/init<S2SV_blank>ack<S2SV_blank>not<S2SV_blank>%d<S2SV_blank>but<S2SV_blank>%d<S2SV_blank>-<S2SV_blank>ignored\\\\n\" , ( int ) sizeof ( struct sctp_asconf_addrv4_param ) , plen ) ; } else { fii = ( struct sctp_asconf_addrv4_param * ) fee ; sin . sin_addr . s_addr = fii -> addrp . addr ; lsa = ( struct sockaddr * ) & sin ; } break ; # endif # ifdef INET6 case SCTP_IPV6_ADDRESS : if ( plen != sizeof ( struct sctp_asconf_addr_param ) ) { SCTP_PRINTF ( \"Sizeof<S2SV_blank>setprim<S2SV_blank>(v6)<S2SV_blank>in<S2SV_blank>init/init<S2SV_blank>ack<S2SV_blank>not<S2SV_blank>%d<S2SV_blank>but<S2SV_blank>%d<S2SV_blank>-<S2SV_blank>ignored\\\\n\" , ( int ) sizeof ( struct sctp_asconf_addr_param ) , plen ) ; } else { memcpy ( sin6 . sin6_addr . s6_addr , fee -> addrp . addr , sizeof ( fee -> addrp . addr ) ) ; lsa = ( struct sockaddr * ) & sin6 ; } break ; # endif default : break ; } if ( lsa ) { ( void ) sctp_set_primary_addr ( stcb , sa , NULL ) ; } } else if ( ptype == SCTP_HAS_NAT_SUPPORT ) { stcb -> asoc . peer_supports_nat = 1 ; } else if ( ptype == SCTP_PRSCTP_SUPPORTED ) { peer_supports_prsctp = 1 ; } else if ( ptype == SCTP_SUPPORTED_CHUNK_EXT ) { struct sctp_supported_chunk_types_param * pr_supported ; uint8_t local_store [ SCTP_PARAM_BUFFER_SIZE ] ; int num_ent , i ; if ( plen > sizeof ( local_store ) ) { return ( - 35 ) ; } phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) & local_store , plen ) ; if ( phdr == NULL ) { return ( - 25 ) ; } pr_supported = ( struct sctp_supported_chunk_types_param * ) phdr ; num_ent = plen - sizeof ( struct sctp_paramhdr ) ; for ( i = 0 ; i < num_ent ; i ++ ) { switch ( pr_supported -> chunk_types [ i ] ) { case SCTP_ASCONF : peer_supports_asconf = 1 ; break ; case SCTP_ASCONF_ACK : peer_supports_asconf_ack = 1 ; break ; case SCTP_FORWARD_CUM_TSN : peer_supports_prsctp = 1 ; break ; case SCTP_PACKET_DROPPED : peer_supports_pktdrop = 1 ; break ; case SCTP_NR_SELECTIVE_ACK : peer_supports_nrsack = 1 ; break ; case SCTP_STREAM_RESET : peer_supports_reconfig = 1 ; break ; case SCTP_AUTHENTICATION : peer_supports_auth = 1 ; break ; case SCTP_IDATA : peer_supports_idata = 1 ; break ; default : break ; } } } else if ( ptype == SCTP_RANDOM ) { if ( plen > sizeof ( random_store ) ) break ; if ( got_random ) { goto next_param ; } phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) random_store , plen ) ; if ( phdr == NULL ) return ( - 26 ) ; p_random = ( struct sctp_auth_random * ) phdr ; random_len = plen - sizeof ( * p_random ) ; if ( random_len != SCTP_AUTH_RANDOM_SIZE_REQUIRED ) { SCTPDBG ( SCTP_DEBUG_AUTH1 , \"SCTP:<S2SV_blank>invalid<S2SV_blank>RANDOM<S2SV_blank>len\\\\n\" ) ; return ( - 27 ) ; } got_random = 1 ; } else if ( ptype == SCTP_HMAC_LIST ) { uint16_t num_hmacs ; uint16_t i ; if ( plen > sizeof ( hmacs_store ) ) break ; if ( got_hmacs ) { goto next_param ; } phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) hmacs_store , plen ) ; if ( phdr == NULL ) return ( - 28 ) ; hmacs = ( struct sctp_auth_hmac_algo * ) phdr ; hmacs_len = plen - sizeof ( * hmacs ) ; num_hmacs = hmacs_len / sizeof ( hmacs -> hmac_ids [ 0 ] ) ; if ( sctp_verify_hmac_param ( hmacs , num_hmacs ) ) { return ( - 29 ) ; } if ( stcb -> asoc . peer_hmacs != NULL ) sctp_free_hmaclist ( stcb -> asoc . peer_hmacs ) ; stcb -> asoc . peer_hmacs = sctp_alloc_hmaclist ( num_hmacs ) ; if ( stcb -> asoc . peer_hmacs != NULL ) { for ( i = 0 ; i < num_hmacs ; i ++ ) { ( void ) sctp_auth_add_hmacid ( stcb -> asoc . peer_hmacs , ntohs ( hmacs -> hmac_ids [ i ] ) ) ; } } got_hmacs = 1 ; } else if ( ptype == SCTP_CHUNK_LIST ) { int i ; if ( plen > sizeof ( chunks_store ) ) break ; if ( got_chklist ) { goto next_param ; } phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) chunks_store , plen ) ; if ( phdr == NULL ) return ( - 30 ) ; chunks = ( struct sctp_auth_chunk_list * ) phdr ; num_chunks = plen - sizeof ( * chunks ) ; if ( stcb -> asoc . peer_auth_chunks != NULL ) sctp_clear_chunklist ( stcb -> asoc . peer_auth_chunks ) ; else stcb -> asoc . peer_auth_chunks = sctp_alloc_chunklist ( ) ; for ( i = 0 ; i < num_chunks ; i ++ ) { ( void ) sctp_auth_add_chunk ( chunks -> chunk_types [ i ] , stcb -> asoc . peer_auth_chunks ) ; if ( chunks -> chunk_types [ i ] == SCTP_ASCONF ) saw_asconf = 1 ; if ( chunks -> chunk_types [ i ] == SCTP_ASCONF_ACK ) saw_asconf_ack = 1 ; } got_chklist = 1 ; } else if ( ( ptype == SCTP_HEARTBEAT_INFO ) || ( ptype == SCTP_STATE_COOKIE ) || ( ptype == SCTP_UNRECOG_PARAM ) || ( ptype == SCTP_COOKIE_PRESERVE ) || ( ptype == SCTP_SUPPORTED_ADDRTYPE ) || ( ptype == SCTP_ADD_IP_ADDRESS ) || ( ptype == SCTP_DEL_IP_ADDRESS ) || ( ptype == SCTP_ERROR_CAUSE_IND ) || ( ptype == SCTP_SUCCESS_REPORT ) ) { ; } else { if ( ( ptype & 0x8000 ) == 0x0000 ) { break ; } } next_param : offset += SCTP_SIZE32 ( plen ) ; if ( offset >= limit ) { break ; } phdr = sctp_get_next_param ( m , offset , & param_buf , sizeof ( param_buf ) ) ; } TAILQ_FOREACH_SAFE ( net , & stcb -> asoc . nets , sctp_next , nnet ) { if ( ( net -> dest_state & SCTP_ADDR_NOT_IN_ASSOC ) == SCTP_ADDR_NOT_IN_ASSOC ) { stcb -> asoc . numnets -- ; TAILQ_REMOVE ( & stcb -> asoc . nets , net , sctp_next ) ; sctp_free_remote_addr ( net ) ; if ( net == stcb -> asoc . primary_destination ) { stcb -> asoc . primary_destination = NULL ; sctp_select_primary_destination ( stcb ) ; } } } if ( ( stcb -> asoc . ecn_supported == 1 ) && ( peer_supports_ecn == 0 ) ) { stcb -> asoc . ecn_supported = 0 ; } if ( ( stcb -> asoc . prsctp_supported == 1 ) && ( peer_supports_prsctp == 0 ) ) { stcb -> asoc . prsctp_supported = 0 ; } if ( ( stcb -> asoc . auth_supported == 1 ) && ( ( peer_supports_auth == 0 ) || ( got_random == 0 ) || ( got_hmacs == 0 ) ) ) { stcb -> asoc . auth_supported = 0 ; } if ( ( stcb -> asoc . asconf_supported == 1 ) && ( ( peer_supports_asconf == 0 ) || ( peer_supports_asconf_ack == 0 ) || ( stcb -> asoc . auth_supported == 0 ) || ( saw_asconf == 0 ) || ( saw_asconf_ack == 0 ) ) ) { stcb -> asoc . asconf_supported = 0 ; } if ( ( stcb -> asoc . reconfig_supported == 1 ) && ( peer_supports_reconfig == 0 ) ) { stcb -> asoc . reconfig_supported = 0 ; } if ( ( stcb -> asoc . idata_supported == 1 ) && ( peer_supports_idata == 0 ) ) { stcb -> asoc . idata_supported = 0 ; } if ( ( stcb -> asoc . nrsack_supported == 1 ) && ( peer_supports_nrsack == 0 ) ) { stcb -> asoc . nrsack_supported = 0 ; } if ( ( stcb -> asoc . pktdrop_supported == 1 ) && ( peer_supports_pktdrop == 0 ) ) { stcb -> asoc . pktdrop_supported = 0 ; } if ( ( peer_supports_auth == 0 ) && ( got_chklist == 1 ) ) { return ( - 31 ) ; } if ( ( peer_supports_asconf == 1 ) && ( peer_supports_auth == 0 ) ) { return ( - 32 ) ; } else if ( ( peer_supports_asconf == 1 ) && ( peer_supports_auth == 1 ) && ( ( saw_asconf == 0 ) || ( saw_asconf_ack == 0 ) ) ) { return ( - 33 ) ; } keylen = sizeof ( * p_random ) + random_len + sizeof ( * hmacs ) + hmacs_len ; if ( chunks != NULL ) { keylen += sizeof ( * chunks ) + num_chunks ; } new_key = sctp_alloc_key ( keylen ) ; if ( new_key != NULL ) { if ( p_random != NULL ) { keylen = sizeof ( * p_random ) + random_len ; memcpy ( new_key -> key , p_random , keylen ) ; } else { keylen = 0 ; } if ( chunks != NULL ) { memcpy ( new_key -> key + keylen , chunks , sizeof ( * chunks ) + num_chunks ) ; keylen += sizeof ( * chunks ) + num_chunks ; } if ( hmacs != NULL ) { memcpy ( new_key -> key + keylen , hmacs , sizeof ( * hmacs ) + hmacs_len ) ; } } else { return ( - 34 ) ; } if ( stcb -> asoc . authinfo . peer_random != NULL ) sctp_free_key ( stcb -> asoc . authinfo . peer_random ) ; stcb -> asoc . authinfo . peer_random = new_key ; sctp_clear_cachedkeys ( stcb , stcb -> asoc . authinfo . assoc_keyid ) ; sctp_clear_cachedkeys ( stcb , stcb -> asoc . authinfo . recv_keyid ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( plen < sizeof ( struct sctp_paramhdr ) <S2SV_ModEnd> ) { break <S2SV_ModStart> ) ; } if ( plen < sizeof ( struct sctp_asconf_addrv4_param ) ) { return ( - 101 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3886\n\n```\nCWE-295 static void inf_gtk_certificate_manager_certificate_func ( InfXmppConnection * connection , gnutls_session_t session , InfCertificateChain * chain , gpointer user_data ) { InfGtkCertificateManager * manager ; InfGtkCertificateManagerPrivate * priv ; InfGtkCertificateDialogFlags flags ; gnutls_x509_crt_t presented_cert ; gnutls_x509_crt_t known_cert ; gchar * hostname ; gboolean match_hostname ; gboolean issuer_known ; gnutls_x509_crt_t root_cert ; int ret ; unsigned int verify ; GHashTable * table ; gboolean cert_equal ; time_t expiration_time ; InfGtkCertificateManagerQuery * query ; gchar * text ; GtkWidget * vbox ; GtkWidget * label ; GError * error ; manager = INF_GTK_CERTIFICATE_MANAGER ( user_data ) ; priv = INF_GTK_CERTIFICATE_MANAGER_PRIVATE ( manager ) ; g_object_get ( G_OBJECT ( connection ) , \"remote-hostname\" , & hostname , NULL ) ; presented_cert = inf_certificate_chain_get_own_certificate ( chain ) ; match_hostname = gnutls_x509_crt_check_hostname ( presented_cert , hostname ) ; ret = gnutls_certificate_verify_peers2 ( session , & verify ) ; error = NULL ; if ( ret != GNUTLS_E_SUCCESS ) inf_gnutls_set_error ( & error , ret ) ; if ( error == NULL ) { issuer_known = TRUE ; if ( verify & GNUTLS_CERT_SIGNER_NOT_FOUND ) { issuer_known = FALSE ; root_cert = inf_certificate_chain_get_root_certificate ( chain ) ; ret = gnutls_x509_crt_list_verify ( inf_certificate_chain_get_raw ( chain ) , inf_certificate_chain_get_n_certificates ( chain ) , & root_cert , 1 , NULL , 0 , GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT , & verify ) ; if ( ret != GNUTLS_E_SUCCESS ) inf_gnutls_set_error ( & error , ret ) ; <S2SV_StartBug> else if ( verify & GNUTLS_CERT_INVALID ) <S2SV_EndBug> inf_gnutls_certificate_verification_set_error ( & error , verify ) ; <S2SV_StartBug> } <S2SV_EndBug> } table = NULL ; if ( error == NULL ) { known_cert = NULL ; if ( ! match_hostname || ! issuer_known ) { table = inf_gtk_certificate_manager_ref_known_hosts ( manager , & error ) ; if ( table != NULL ) known_cert = g_hash_table_lookup ( table , hostname ) ; } } flags = 0 ; if ( error == NULL ) { if ( known_cert != NULL ) { cert_equal = inf_gtk_certificate_manager_compare_fingerprint ( known_cert , presented_cert , & error ) ; if ( error == NULL && cert_equal == FALSE ) { if ( ! match_hostname ) flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_HOSTNAME_MISMATCH ; if ( ! issuer_known ) flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_ISSUER_NOT_KNOWN ; flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_UNEXPECTED ; expiration_time = gnutls_x509_crt_get_expiration_time ( known_cert ) ; if ( expiration_time != ( time_t ) ( - 1 ) ) { expiration_time -= INF_GTK_CERTIFICATE_MANAGER_EXPIRATION_TOLERANCE ; if ( time ( NULL ) > expiration_time ) { flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_OLD_EXPIRED ; } } } } else { if ( ! match_hostname ) flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_HOSTNAME_MISMATCH ; if ( ! issuer_known ) flags |= INF_GTK_CERTIFICATE_DIALOG_CERT_ISSUER_NOT_KNOWN ; } } if ( error == NULL ) { if ( flags == 0 ) { if ( match_hostname && issuer_known ) { if ( table != NULL && g_hash_table_remove ( table , hostname ) == TRUE ) { inf_gtk_certificate_manager_write_known_hosts_with_warning ( manager , table ) ; } } inf_xmpp_connection_certificate_verify_continue ( connection ) ; } else { query = g_slice_new ( InfGtkCertificateManagerQuery ) ; query -> manager = manager ; query -> known_hosts = table ; query -> connection = connection ; query -> dialog = inf_gtk_certificate_dialog_new ( priv -> parent_window , 0 , flags , hostname , chain ) ; query -> certificate_chain = chain ; table = NULL ; g_object_ref ( query -> connection ) ; inf_certificate_chain_ref ( chain ) ; g_signal_connect ( G_OBJECT ( connection ) , \"notify::status\" , G_CALLBACK ( inf_gtk_certificate_manager_notify_status_cb ) , query ) ; g_signal_connect ( G_OBJECT ( query -> dialog ) , \"response\" , G_CALLBACK ( inf_gtk_certificate_manager_response_cb ) , query ) ; gtk_dialog_add_button ( GTK_DIALOG ( query -> dialog ) , _ ( \"_Cancel<S2SV_blank>connection\" ) , GTK_RESPONSE_REJECT ) ; gtk_dialog_add_button ( GTK_DIALOG ( query -> dialog ) , _ ( \"C_ontinue<S2SV_blank>connection\" ) , GTK_RESPONSE_ACCEPT ) ; text = g_strdup_printf ( _ ( \"Do<S2SV_blank>you<S2SV_blank>want<S2SV_blank>to<S2SV_blank>continue<S2SV_blank>the<S2SV_blank>connection<S2SV_blank>to<S2SV_blank>host<S2SV_blank>\\\\\"%s\\\\\"?<S2SV_blank>If<S2SV_blank>you<S2SV_blank>\" \"choose<S2SV_blank>to<S2SV_blank>continue,<S2SV_blank>this<S2SV_blank>certificate<S2SV_blank>will<S2SV_blank>be<S2SV_blank>trusted<S2SV_blank>in<S2SV_blank>the<S2SV_blank>\" \"future<S2SV_blank>when<S2SV_blank>connecting<S2SV_blank>to<S2SV_blank>this<S2SV_blank>host.\" ) , hostname ) ; label = gtk_label_new ( text ) ; gtk_label_set_line_wrap ( GTK_LABEL ( label ) , TRUE ) ; gtk_label_set_line_wrap_mode ( GTK_LABEL ( label ) , PANGO_WRAP_WORD_CHAR ) ; gtk_label_set_max_width_chars ( GTK_LABEL ( label ) , 60 ) ; gtk_misc_set_alignment ( GTK_MISC ( label ) , 0.0 , 0.0 ) ; gtk_widget_show ( label ) ; g_free ( text ) ; vbox = gtk_dialog_get_content_area ( GTK_DIALOG ( query -> dialog ) ) ; gtk_box_pack_start ( GTK_BOX ( vbox ) , label , FALSE , FALSE , 0 ) ; priv -> queries = g_slist_prepend ( priv -> queries , query ) ; gtk_window_present ( GTK_WINDOW ( query -> dialog ) ) ; } } else { inf_xmpp_connection_certificate_verify_cancel ( connection , error ) ; g_error_free ( error ) ; } if ( table != NULL ) g_hash_table_unref ( table ) ; g_free ( hostname ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret ) ; } if ( error == NULL ) <S2SV_ModEnd> if ( verify <S2SV_ModStart> verify ) ; <S2SV_ModEnd> } table =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10131\n\n```\nCWE-119 static int format8BIM ( Image * ifile , Image * ofile ) { char temp [ MagickPathExtent ] ; unsigned int foundOSType ; int ID , resCount , i , c ; ssize_t count ; unsigned char * PString , * str ; resCount = 0 ; foundOSType = 0 ; ( void ) foundOSType ; c = ReadBlobByte ( ifile ) ; while ( c != EOF ) { if ( c == '8' ) { unsigned char buffer [ 5 ] ; buffer [ 0 ] = ( unsigned char ) c ; for ( i = 1 ; i < 4 ; i ++ ) { c = ReadBlobByte ( ifile ) ; if ( c == EOF ) return ( - 1 ) ; buffer [ i ] = ( unsigned char ) c ; } buffer [ 4 ] = 0 ; if ( strcmp ( ( const char * ) buffer , \"8BIM\" ) == 0 ) foundOSType = 1 ; else continue ; } else { c = ReadBlobByte ( ifile ) ; continue ; } ID = ReadBlobMSBSignedShort ( ifile ) ; if ( ID < 0 ) return ( - 1 ) ; { unsigned char plen ; c = ReadBlobByte ( ifile ) ; if ( c == EOF ) return ( - 1 ) ; plen = ( unsigned char ) c ; PString = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( plen + MagickPathExtent ) , sizeof ( * PString ) ) ; if ( PString == ( unsigned char * ) NULL ) return 0 ; for ( i = 0 ; i < plen ; i ++ ) { c = ReadBlobByte ( ifile ) ; if ( c == EOF ) { PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return - 1 ; } PString [ i ] = ( unsigned char ) c ; } PString [ plen ] = 0 ; if ( ( plen & 0x01 ) == 0 ) { c = ReadBlobByte ( ifile ) ; if ( c == EOF ) { PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return - 1 ; } } } count = ( ssize_t ) ReadBlobMSBSignedLong ( ifile ) ; if ( ( count < 0 ) || ( count > GetBlobSize ( ifile ) ) ) { PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return - 1 ; } <S2SV_StartBug> str = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) count , sizeof ( * str ) ) ; <S2SV_EndBug> if ( str == ( unsigned char * ) NULL ) { PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return 0 ; } for ( i = 0 ; i < ( ssize_t ) count ; i ++ ) { c = ReadBlobByte ( ifile ) ; if ( c == EOF ) { str = ( unsigned char * ) RelinquishMagickMemory ( str ) ; PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return - 1 ; } str [ i ] = ( unsigned char ) c ; } if ( ID != THUMBNAIL_ID ) { if ( strlen ( ( const char * ) PString ) > 0 ) ( void ) FormatLocaleString ( temp , MagickPathExtent , \"8BIM#%d#%s=\" , ID , PString ) ; else ( void ) FormatLocaleString ( temp , MagickPathExtent , \"8BIM#%d=\" , ID ) ; ( void ) WriteBlobString ( ofile , temp ) ; if ( ID == IPTC_ID ) { formatString ( ofile , \"IPTC\" , 4 ) ; formatIPTCfromBuffer ( ofile , ( char * ) str , ( ssize_t ) count ) ; } else formatString ( ofile , ( char * ) str , ( ssize_t ) count ) ; } str = ( unsigned char * ) RelinquishMagickMemory ( str ) ; PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; resCount ++ ; c = ReadBlobByte ( ifile ) ; } return resCount ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t ) count + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1176\n\n```\nCWE-119 static PyObject * _pyfribidi_log2vis ( PyObject * self , PyObject * args , PyObject * kw ) { <S2SV_StartBug> PyObject * logical = NULL ; <S2SV_EndBug> <S2SV_StartBug> FriBidiParType base = FRIBIDI_TYPE_RTL ; <S2SV_EndBug> const char * encoding = \"utf-8\" ; int clean = 0 ; int reordernsm = 1 ; static char * kwargs [ ] = <S2SV_StartBug> { \"logical\" , \"base_direction\" , \"encoding\" , \"clean\" , \"reordernsm\" , NULL } ; <S2SV_EndBug> <S2SV_StartBug> if ( ! PyArg_ParseTupleAndKeywords ( args , kw , \"O|isii\" , kwargs , <S2SV_EndBug> <S2SV_StartBug> & logical , & base , & encoding , & clean , & reordernsm ) ) <S2SV_EndBug> <S2SV_StartBug> return NULL ; <S2SV_EndBug> if ( ! ( base == FRIBIDI_TYPE_RTL || <S2SV_StartBug> base == FRIBIDI_TYPE_LTR || base == FRIBIDI_TYPE_ON ) ) <S2SV_EndBug> return PyErr_Format ( PyExc_ValueError , \"invalid<S2SV_blank>value<S2SV_blank>%d:<S2SV_blank>use<S2SV_blank>either<S2SV_blank>RTL,<S2SV_blank>LTR<S2SV_blank>or<S2SV_blank>ON\" , base ) ; <S2SV_StartBug> if ( PyUnicode_Check ( logical ) ) <S2SV_EndBug> return log2vis_unicode ( logical , base , clean , reordernsm ) ; <S2SV_StartBug> else if ( PyString_Check ( logical ) ) <S2SV_EndBug> return log2vis_encoded_string ( logical , encoding , base , clean , reordernsm ) ; else return PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>unicode<S2SV_blank>or<S2SV_blank>str,<S2SV_blank>not<S2SV_blank>%s\" , logical -> ob_type -> tp_name ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> kw ) { PyUnicodeObject <S2SV_ModEnd> * logical = <S2SV_ModStart> base = FRIBIDI_TYPE_RTL <S2SV_ModEnd> ; int clean <S2SV_ModStart> , \"base_direction\" , <S2SV_ModEnd> \"clean\" , \"reordernsm\" <S2SV_ModStart> , kw , \"U|iii\" <S2SV_ModEnd> , kwargs , <S2SV_ModStart> base , & <S2SV_ModEnd> clean , & <S2SV_ModStart> reordernsm ) ) { <S2SV_ModStart> return NULL ; } <S2SV_ModStart> FRIBIDI_TYPE_ON ) ) { <S2SV_ModStart> base ) ; } return unicode_log2vis <S2SV_ModEnd> ( logical , <S2SV_ModStart> reordernsm ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3364\n\n```\nCWE-119 static __u8 * nci_extract_rf_params_nfca_passive_poll ( struct nci_dev * ndev , struct rf_tech_specific_params_nfca_poll * nfca_poll , __u8 * data ) { nfca_poll -> sens_res = __le16_to_cpu ( * ( ( __u16 * ) data ) ) ; data += 2 ; <S2SV_StartBug> nfca_poll -> nfcid1_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"sens_res<S2SV_blank>0x%x,<S2SV_blank>nfcid1_len<S2SV_blank>%d\\\\n\" , nfca_poll -> sens_res , nfca_poll -> nfcid1_len ) ; memcpy ( nfca_poll -> nfcid1 , data , nfca_poll -> nfcid1_len ) ; data += nfca_poll -> nfcid1_len ; nfca_poll -> sel_res_len = * data ++ ; if ( nfca_poll -> sel_res_len != 0 ) nfca_poll -> sel_res = * data ++ ; pr_debug ( \"sel_res_len<S2SV_blank>%d,<S2SV_blank>sel_res<S2SV_blank>0x%x\\\\n\" , nfca_poll -> sel_res_len , nfca_poll -> sel_res ) ; return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> nfcid1_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , NFC_NFCID1_MAXSIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15945\n\n```\nCWE-119 static int decode_bit_string ( const u8 * inbuf , size_t inlen , void * outbuf , size_t outlen , int invert ) { const u8 * in = inbuf ; u8 * out = ( u8 * ) outbuf ; <S2SV_StartBug> int zero_bits = * in & 0x07 ; <S2SV_EndBug> <S2SV_StartBug> size_t octets_left = inlen - 1 ; <S2SV_EndBug> <S2SV_StartBug> int i , count = 0 ; <S2SV_EndBug> memset ( outbuf , 0 , outlen ) ; in ++ ; if ( outlen < octets_left ) return SC_ERROR_BUFFER_TOO_SMALL ; if ( inlen < 1 ) return SC_ERROR_INVALID_ASN1_OBJECT ; while ( octets_left ) { int bits_to_go ; * out = 0 ; if ( octets_left == 1 ) bits_to_go = 8 - zero_bits ; else bits_to_go = 8 ; if ( invert ) for ( i = 0 ; i < bits_to_go ; i ++ ) { * out |= ( ( * in >> ( 7 - i ) ) & 1 ) << i ; } else { * out = * in ; } out ++ ; in ++ ; octets_left -- ; count ++ ; } return ( count * 8 ) - zero_bits ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> outbuf ; int i , count = 0 ; int zero_bits ; size_t octets_left ; if ( outlen < octets_left ) return SC_ERROR_BUFFER_TOO_SMALL ; if ( inlen < 1 ) return SC_ERROR_INVALID_ASN1_OBJECT ; <S2SV_ModStart> & 0x07 ; <S2SV_ModEnd> octets_left = inlen <S2SV_ModStart> - 1 ; in ++ ; memset ( outbuf , 0 , outlen ) ; while ( octets_left ) { int bits_to_go ; * out = 0 ; if ( octets_left == 1 ) bits_to_go = 8 - zero_bits ; else bits_to_go = 8 ; if ( invert ) for ( i = 0 ; i < bits_to_go ; i ++ ) { * out |= ( ( * in >> ( 7 - i ) ) & 1 ) << i ; } else { * out = * in ; } out ++ ; in ++ ; octets_left -- ; count ++ ; } return ( count * 8 <S2SV_ModEnd> ) - zero_bits\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3900\n\n```\nCWE-264 static int svc_can_register ( const uint16_t * name , size_t name_len , pid_t spid , uid_t uid ) { const char * perm = \"add\" ; <S2SV_StartBug> if ( uid >= AID_APP ) { <S2SV_EndBug> return 0 ; } return check_mac_perms_from_lookup ( spid , uid , perm , str8 ( name , name_len ) ) ? 1 : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( multiuser_get_app_id ( uid ) <S2SV_ModEnd> >= AID_APP )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3760\n\n```\nCWE-20 void bdt_enable ( void ) { bdt_log ( \"ENABLE<S2SV_blank>BT\" ) ; if ( bt_enabled ) { bdt_log ( \"Bluetooth<S2SV_blank>is<S2SV_blank>already<S2SV_blank>enabled\" ) ; return ; } <S2SV_StartBug> status = sBtInterface -> enable ( ) ; <S2SV_EndBug> check_return_status ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> enable ( false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28196\n\n```\nCWE-674 static krb5_error_code decode_atype ( const taginfo * t , const uint8_t * asn1 , size_t len , const struct atype_info * a , void * val ) { krb5_error_code ret ; switch ( a -> type ) { case atype_fn : { const struct fn_info * fn = a -> tinfo ; assert ( fn -> dec != NULL ) ; return fn -> dec ( t , asn1 , len , val ) ; } case atype_sequence : return decode_sequence ( asn1 , len , a -> tinfo , val ) ; case atype_ptr : { const struct ptr_info * ptrinfo = a -> tinfo ; void * ptr = LOADPTR ( val , ptrinfo ) ; assert ( ptrinfo -> basetype != NULL ) ; if ( ptr != NULL ) { return decode_atype ( t , asn1 , len , ptrinfo -> basetype , ptr ) ; } else { ret = decode_atype_to_ptr ( t , asn1 , len , ptrinfo -> basetype , & ptr ) ; if ( ret ) return ret ; STOREPTR ( ptr , ptrinfo , val ) ; break ; } } case atype_offset : { const struct offset_info * off = a -> tinfo ; assert ( off -> basetype != NULL ) ; return decode_atype ( t , asn1 , len , off -> basetype , ( char * ) val + off -> dataoff ) ; } case atype_optional : { const struct optional_info * opt = a -> tinfo ; return decode_atype ( t , asn1 , len , opt -> basetype , val ) ; } case atype_counted : { const struct counted_info * counted = a -> tinfo ; void * dataptr = ( char * ) val + counted -> dataoff ; size_t count ; assert ( counted -> basetype != NULL ) ; ret = decode_cntype ( t , asn1 , len , counted -> basetype , dataptr , & count ) ; if ( ret ) return ret ; return store_count ( count , counted , val ) ; } case atype_tagged_thing : { const struct tagged_info * tag = a -> tinfo ; taginfo inner_tag ; const taginfo * tp = t ; const uint8_t * rem ; size_t rlen ; if ( ! tag -> implicit ) { <S2SV_StartBug> ret = get_tag ( asn1 , len , & inner_tag , & asn1 , & len , & rem , & rlen ) ; <S2SV_EndBug> if ( ret ) return ret ; tp = & inner_tag ; if ( ! check_atype_tag ( tag -> basetype , tp ) ) return ASN1_BAD_ID ; } return decode_atype ( tp , asn1 , len , tag -> basetype , val ) ; } case atype_bool : { intmax_t intval ; ret = k5_asn1_decode_bool ( asn1 , len , & intval ) ; if ( ret ) return ret ; return store_int ( intval , a -> size , val ) ; } case atype_int : { intmax_t intval ; ret = k5_asn1_decode_int ( asn1 , len , & intval ) ; if ( ret ) return ret ; return store_int ( intval , a -> size , val ) ; } case atype_uint : { uintmax_t intval ; ret = k5_asn1_decode_uint ( asn1 , len , & intval ) ; if ( ret ) return ret ; return store_uint ( intval , a -> size , val ) ; } case atype_int_immediate : { const struct immediate_info * imm = a -> tinfo ; intmax_t intval ; ret = k5_asn1_decode_int ( asn1 , len , & intval ) ; if ( ret ) return ret ; if ( intval != imm -> val && imm -> err != 0 ) return imm -> err ; break ; } default : assert ( a -> type != atype_nullterm_sequence_of ) ; assert ( a -> type != atype_nonempty_nullterm_sequence_of ) ; assert ( a -> type > atype_min ) ; assert ( a -> type < atype_max ) ; abort ( ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , & rlen , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12893\n\n```\nCWE-125 static int name_len ( netdissect_options * ndo , const unsigned char * s , const unsigned char * maxbuf ) { const unsigned char * s0 = s ; unsigned char c ; if ( s >= maxbuf ) return ( - 1 ) ; ND_TCHECK2 ( * s , 1 ) ; c = * s ; if ( ( c & 0xC0 ) == 0xC0 ) return ( 2 ) ; while ( * s ) { if ( s >= maxbuf ) return ( - 1 ) ; ND_TCHECK2 ( * s , 1 ) ; s += ( * s ) + 1 ; <S2SV_StartBug> } <S2SV_EndBug> return ( PTR_DIFF ( s , s0 ) + 1 ) ; trunc : return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 1 ; ND_TCHECK2 ( * s , 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17542\n\n```\nCWE-000 static av_cold int vqa_decode_init ( AVCodecContext * avctx ) { VqaContext * s = avctx -> priv_data ; int i , j , codebook_index , ret ; s -> avctx = avctx ; avctx -> pix_fmt = AV_PIX_FMT_PAL8 ; if ( s -> avctx -> extradata_size != VQA_HEADER_SIZE ) { av_log ( s -> avctx , AV_LOG_ERROR , \"expected<S2SV_blank>extradata<S2SV_blank>size<S2SV_blank>of<S2SV_blank>%d\\\\n\" , VQA_HEADER_SIZE ) ; return AVERROR ( EINVAL ) ; } s -> vqa_version = s -> avctx -> extradata [ 0 ] ; switch ( s -> vqa_version ) { case 1 : case 2 : break ; case 3 : avpriv_report_missing_feature ( avctx , \"VQA<S2SV_blank>Version<S2SV_blank>%d\" , s -> vqa_version ) ; return AVERROR_PATCHWELCOME ; default : avpriv_request_sample ( avctx , \"VQA<S2SV_blank>Version<S2SV_blank>%i\" , s -> vqa_version ) ; return AVERROR_PATCHWELCOME ; } s -> width = AV_RL16 ( & s -> avctx -> extradata [ 6 ] ) ; s -> height = AV_RL16 ( & s -> avctx -> extradata [ 8 ] ) ; <S2SV_StartBug> if ( ( ret = av_image_check_size ( s -> width , s -> height , 0 , avctx ) ) < 0 ) { <S2SV_EndBug> s -> width = s -> height = 0 ; return ret ; } s -> vector_width = s -> avctx -> extradata [ 10 ] ; s -> vector_height = s -> avctx -> extradata [ 11 ] ; s -> partial_count = s -> partial_countdown = s -> avctx -> extradata [ 13 ] ; if ( ( s -> vector_width != 4 ) || ( ( s -> vector_height != 2 ) && ( s -> vector_height != 4 ) ) ) { return AVERROR_INVALIDDATA ; } if ( s -> width % s -> vector_width || s -> height % s -> vector_height ) { av_log ( avctx , AV_LOG_ERROR , \"Image<S2SV_blank>size<S2SV_blank>not<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>block<S2SV_blank>size\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> codebook_size = MAX_CODEBOOK_SIZE ; s -> codebook = av_malloc ( s -> codebook_size ) ; if ( ! s -> codebook ) goto fail ; s -> next_codebook_buffer = av_malloc ( s -> codebook_size ) ; if ( ! s -> next_codebook_buffer ) goto fail ; s -> decode_buffer_size = ( s -> width / s -> vector_width ) * ( s -> height / s -> vector_height ) * 2 ; s -> decode_buffer = av_mallocz ( s -> decode_buffer_size ) ; if ( ! s -> decode_buffer ) goto fail ; if ( s -> vector_height == 4 ) { codebook_index = 0xFF00 * 16 ; for ( i = 0 ; i < 256 ; i ++ ) for ( j = 0 ; j < 16 ; j ++ ) s -> codebook [ codebook_index ++ ] = i ; } else { codebook_index = 0xF00 * 8 ; for ( i = 0 ; i < 256 ; i ++ ) for ( j = 0 ; j < 8 ; j ++ ) s -> codebook [ codebook_index ++ ] = i ; } s -> next_codebook_buffer_index = 0 ; return 0 ; fail : av_freep ( & s -> codebook ) ; av_freep ( & s -> next_codebook_buffer ) ; av_freep ( & s -> decode_buffer ) ; return AVERROR ( ENOMEM ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ret = ff_set_dimensions ( avctx , <S2SV_ModEnd> s -> width <S2SV_ModStart> s -> height <S2SV_ModEnd> ) ) <\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13010\n\n```\nCWE-125 static int <S2SV_StartBug> l_strnstart ( const char * tstr1 , u_int tl1 , const char * str2 , u_int l2 ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> if ( tl1 > l2 ) return 0 ; return ( strncmp ( tstr1 , str2 , tl1 ) == 0 ? 1 : 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int l_strnstart ( netdissect_options * ndo , <S2SV_ModStart> l2 ) { if ( ! ND_TTEST2 ( * str2 , tl1 ) ) { return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1805\n\n```\nCWE-17 static ssize_t <S2SV_StartBug> pipe_write ( struct kiocb * iocb , const struct iovec * _iov , <S2SV_EndBug> unsigned long nr_segs , loff_t ppos ) { struct file * filp = iocb -> ki_filp ; struct pipe_inode_info * pipe = filp -> private_data ; <S2SV_StartBug> ssize_t ret ; <S2SV_EndBug> <S2SV_StartBug> int do_wakeup ; <S2SV_EndBug> struct iovec * iov = ( struct iovec * ) _iov ; <S2SV_StartBug> size_t total_len ; <S2SV_EndBug> ssize_t chars ; <S2SV_StartBug> total_len = iov_length ( iov , nr_segs ) ; <S2SV_EndBug> if ( unlikely ( total_len == 0 ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> do_wakeup = 0 ; ret = 0 ; __pipe_lock ( pipe ) ; if ( ! pipe -> readers ) { send_sig ( SIGPIPE , current , 0 ) ; ret = - EPIPE ; goto out ; } chars = total_len & ( PAGE_SIZE - 1 ) ; if ( pipe -> nrbufs && chars != 0 ) { int lastbuf = ( pipe -> curbuf + pipe -> nrbufs - 1 ) & ( pipe -> buffers - 1 ) ; struct pipe_buffer * buf = pipe -> bufs + lastbuf ; const struct pipe_buf_operations * ops = buf -> ops ; int offset = buf -> offset + buf -> len ; if ( ops -> can_merge && offset + chars <= PAGE_SIZE ) { <S2SV_StartBug> int error , atomic = 1 ; <S2SV_EndBug> void * addr ; error = ops -> confirm ( pipe , buf ) ; if ( error ) goto out ; <S2SV_StartBug> iov_fault_in_pages_read ( iov , chars ) ; <S2SV_EndBug> redo1 : if ( atomic ) addr = kmap_atomic ( buf -> page ) ; else addr = kmap ( buf -> page ) ; error = pipe_iov_copy_from_user ( offset + addr , iov , chars , atomic ) ; if ( atomic ) kunmap_atomic ( addr ) ; else kunmap ( buf -> page ) ; ret = error ; do_wakeup = 1 ; if ( error ) { if ( atomic ) { atomic = 0 ; goto redo1 ; } goto out ; <S2SV_StartBug> } <S2SV_EndBug> buf -> len += chars ; <S2SV_StartBug> total_len -= chars ; <S2SV_EndBug> ret = chars ; if ( ! total_len ) goto out ; } } for ( ; ; ) { int bufs ; if ( ! pipe -> readers ) { send_sig ( SIGPIPE , current , 0 ) ; if ( ! ret ) ret = - EPIPE ; break ; } bufs = pipe -> nrbufs ; if ( bufs < pipe -> buffers ) { int newbuf = ( pipe -> curbuf + bufs ) & ( pipe -> buffers - 1 ) ; struct pipe_buffer * buf = pipe -> bufs + newbuf ; struct page * page = pipe -> tmp_page ; <S2SV_StartBug> char * src ; <S2SV_EndBug> int error , atomic = 1 ; if ( ! page ) { page = alloc_page ( GFP_HIGHUSER ) ; if ( unlikely ( ! page ) ) { ret = ret ? : - ENOMEM ; break ; } pipe -> tmp_page = page ; } do_wakeup = 1 ; <S2SV_StartBug> chars = PAGE_SIZE ; <S2SV_EndBug> if ( chars > total_len ) chars = total_len ; iov_fault_in_pages_read ( iov , chars ) ; redo2 : if ( atomic ) src = kmap_atomic ( page ) ; else src = kmap ( page ) ; error = pipe_iov_copy_from_user ( src , iov , chars , atomic ) ; if ( atomic ) kunmap_atomic ( src ) ; else kunmap ( page ) ; <S2SV_StartBug> if ( unlikely ( error ) ) { <S2SV_EndBug> if ( atomic ) { atomic = 0 ; goto redo2 ; } if ( ! ret ) ret = error ; break ; } <S2SV_StartBug> ret += chars ; <S2SV_EndBug> buf -> page = page ; buf -> ops = & anon_pipe_buf_ops ; buf -> offset = 0 ; <S2SV_StartBug> buf -> len = chars ; <S2SV_EndBug> buf -> flags = 0 ; if ( is_packetized ( filp ) ) { buf -> ops = & packet_pipe_buf_ops ; buf -> flags = PIPE_BUF_FLAG_PACKET ; } pipe -> nrbufs = ++ bufs ; pipe -> tmp_page = NULL ; <S2SV_StartBug> total_len -= chars ; <S2SV_EndBug> if ( ! total_len ) break ; } if ( bufs < pipe -> buffers ) continue ; if ( filp -> f_flags & O_NONBLOCK ) { if ( ! ret ) ret = - EAGAIN ; break ; } if ( signal_pending ( current ) ) { if ( ! ret ) ret = - ERESTARTSYS ; break ; } if ( do_wakeup ) { wake_up_interruptible_sync_poll ( & pipe -> wait , POLLIN | POLLRDNORM ) ; kill_fasync ( & pipe -> fasync_readers , SIGIO , POLL_IN ) ; do_wakeup = 0 ; } pipe -> waiting_writers ++ ; pipe_wait ( pipe ) ; pipe -> waiting_writers -- ; } out : __pipe_unlock ( pipe ) ; if ( do_wakeup ) { wake_up_interruptible_sync_poll ( & pipe -> wait , POLLIN | POLLRDNORM ) ; kill_fasync ( & pipe -> fasync_readers , SIGIO , POLL_IN ) ; } if ( ret > 0 && sb_start_write_trylock ( file_inode ( filp ) -> i_sb ) ) { int err = file_update_time ( filp ) ; if ( err ) ret = err ; sb_end_write ( file_inode ( filp ) -> i_sb ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * iocb , struct iov_iter * from <S2SV_ModEnd> ) { struct <S2SV_ModStart> ; ssize_t ret = 0 <S2SV_ModStart> ; int do_wakeup = 0 <S2SV_ModEnd> ; size_t total_len <S2SV_ModStart> ; size_t total_len = iov_iter_count ( from ) <S2SV_ModStart> ssize_t chars ; <S2SV_ModEnd> if ( unlikely <S2SV_ModStart> ) ) return <S2SV_ModEnd> 0 ; __pipe_lock <S2SV_ModStart> { int error <S2SV_ModEnd> = ops -> <S2SV_ModStart> goto out ; ret = copy_page_from_iter ( buf -> page , offset , chars , from ) ; if ( unlikely ( ret < chars ) ) { error = - EFAULT ; <S2SV_ModEnd> goto out ; <S2SV_ModStart> out ; } do_wakeup = 1 ; <S2SV_ModStart> += chars ; ret = chars ; if ( ! iov_iter_count ( from ) <S2SV_ModEnd> ) goto out <S2SV_ModStart> -> tmp_page ; int copied <S2SV_ModEnd> ; if ( <S2SV_ModStart> = 1 ; copied = copy_page_from_iter ( page , 0 , PAGE_SIZE , from <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( unlikely ( copied < PAGE_SIZE && iov_iter_count ( from ) ) ) { if ( ! ret ) ret = - EFAULT <S2SV_ModEnd> ; break ; <S2SV_ModStart> } ret += copied <S2SV_ModEnd> ; buf -> <S2SV_ModStart> -> len = copied <S2SV_ModEnd> ; buf -> <S2SV_ModStart> = NULL ; if ( ! iov_iter_count ( from ) <S2SV_ModEnd> ) break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; <S2SV_StartBug> u64 insn_bitness = ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) ? 64 : 32 ; <S2SV_EndBug> if ( insn_bitness == 32 ) { coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size ( & src_reg , 4 ) ; } smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; if ( ( src_known && ( smin_val != smax_val || umin_val != umax_val ) ) || smin_val > smax_val || umin_val > umax_val ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } if ( ! src_known && opcode != BPF_ADD && opcode != BPF_SUB && opcode != BPF_AND ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } switch ( opcode ) { case BPF_ADD : <S2SV_StartBug> if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || <S2SV_EndBug> signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : <S2SV_StartBug> if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || <S2SV_EndBug> signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_ARSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value >>= umin_val ; dst_reg -> smax_value >>= umin_val ; dst_reg -> var_off = tnum_arshift ( dst_reg -> var_off , umin_val ) ; dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { coerce_reg_to_size ( dst_reg , 4 ) ; } __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 64 : 32 ; u32 dst = insn -> dst_reg ; int ret <S2SV_ModStart> case BPF_ADD : ret = sanitize_val_alu ( env , insn ) ; if ( ret < 0 ) { verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>add<S2SV_blank>from<S2SV_blank>different<S2SV_blank>pointers<S2SV_blank>or<S2SV_blank>scalars\\\\n\" , dst ) ; return ret ; } <S2SV_ModStart> case BPF_SUB : ret = sanitize_val_alu ( env , insn ) ; if ( ret < 0 ) { verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>sub<S2SV_blank>from<S2SV_blank>different<S2SV_blank>pointers<S2SV_blank>or<S2SV_blank>scalars\\\\n\" , dst ) ; return ret ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13044\n\n```\nCWE-125 static int dhcpv4_print ( netdissect_options * ndo , const u_char * cp , u_int length , int indent ) { u_int i , t ; const u_char * tlv , * value ; uint8_t type , optlen ; i = 0 ; while ( i < length ) { <S2SV_StartBug> tlv = cp + i ; <S2SV_EndBug> type = ( uint8_t ) tlv [ 0 ] ; optlen = ( uint8_t ) tlv [ 1 ] ; value = tlv + 2 ; ND_PRINT ( ( ndo , \"\\\\n\" ) ) ; for ( t = indent ; t > 0 ; t -- ) ND_PRINT ( ( ndo , \"\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( dh4opt_str , \"Unknown\" , type ) ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>(%u)\" , optlen + 2 ) ) ; <S2SV_EndBug> switch ( type ) { case DH4OPT_DNS_SERVERS : case DH4OPT_NTP_SERVERS : { if ( optlen < 4 || optlen % 4 != 0 ) { return - 1 ; } for ( t = 0 ; t < optlen ; t += 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ipaddr_string ( ndo , value + t ) ) ) ; } break ; case DH4OPT_DOMAIN_SEARCH : { const u_char * tp = value ; while ( tp < value + optlen ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ( tp = ns_nprint ( ndo , tp , value + optlen ) ) == NULL ) return - 1 ; } } break ; } i += 2 + optlen ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length ) { if ( i + 2 > length ) return - 1 ; <S2SV_ModStart> 2 ) ) ; if ( i + 2 + optlen > length ) return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr3_leaf_flipflags ( struct xfs_da_args * args ) { struct xfs_attr_leafblock * leaf1 ; struct xfs_attr_leafblock * leaf2 ; struct xfs_attr_leaf_entry * entry1 ; struct xfs_attr_leaf_entry * entry2 ; struct xfs_attr_leaf_name_remote * name_rmt ; struct xfs_buf * bp1 ; struct xfs_buf * bp2 ; int error ; # ifdef DEBUG struct xfs_attr3_icleaf_hdr ichdr1 ; struct xfs_attr3_icleaf_hdr ichdr2 ; xfs_attr_leaf_name_local_t * name_loc ; int namelen1 , namelen2 ; char * name1 , * name2 ; # endif trace_xfs_attr_leaf_flipflags ( args ) ; error = xfs_attr3_leaf_read ( args -> trans , args -> dp , args -> blkno , - 1 , & bp1 ) ; if ( error ) return error ; if ( args -> blkno2 != args -> blkno ) { error = xfs_attr3_leaf_read ( args -> trans , args -> dp , args -> blkno2 , - 1 , & bp2 ) ; if ( error ) return error ; } else { bp2 = bp1 ; } leaf1 = bp1 -> b_addr ; entry1 = & xfs_attr3_leaf_entryp ( leaf1 ) [ args -> index ] ; leaf2 = bp2 -> b_addr ; entry2 = & xfs_attr3_leaf_entryp ( leaf2 ) [ args -> index2 ] ; # ifdef DEBUG xfs_attr3_leaf_hdr_from_disk ( & ichdr1 , leaf1 ) ; ASSERT ( args -> index < ichdr1 . count ) ; ASSERT ( args -> index >= 0 ) ; xfs_attr3_leaf_hdr_from_disk ( & ichdr2 , leaf2 ) ; ASSERT ( args -> index2 < ichdr2 . count ) ; ASSERT ( args -> index2 >= 0 ) ; if ( entry1 -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf1 , args -> index ) ; namelen1 = name_loc -> namelen ; name1 = ( char * ) name_loc -> nameval ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf1 , args -> index ) ; namelen1 = name_rmt -> namelen ; name1 = ( char * ) name_rmt -> name ; } if ( entry2 -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf2 , args -> index2 ) ; namelen2 = name_loc -> namelen ; name2 = ( char * ) name_loc -> nameval ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf2 , args -> index2 ) ; namelen2 = name_rmt -> namelen ; name2 = ( char * ) name_rmt -> name ; } ASSERT ( be32_to_cpu ( entry1 -> hashval ) == be32_to_cpu ( entry2 -> hashval ) ) ; ASSERT ( namelen1 == namelen2 ) ; ASSERT ( memcmp ( name1 , name2 , namelen1 ) == 0 ) ; # endif ASSERT ( entry1 -> flags & XFS_ATTR_INCOMPLETE ) ; ASSERT ( ( entry2 -> flags & XFS_ATTR_INCOMPLETE ) == 0 ) ; entry1 -> flags &= ~ XFS_ATTR_INCOMPLETE ; xfs_trans_log_buf ( args -> trans , bp1 , XFS_DA_LOGRANGE ( leaf1 , entry1 , sizeof ( * entry1 ) ) ) ; if ( args -> rmtblkno ) { ASSERT ( ( entry1 -> flags & XFS_ATTR_LOCAL ) == 0 ) ; name_rmt = xfs_attr3_leaf_name_remote ( leaf1 , args -> index ) ; name_rmt -> valueblk = cpu_to_be32 ( args -> rmtblkno ) ; <S2SV_StartBug> name_rmt -> valuelen = cpu_to_be32 ( args -> valuelen ) ; <S2SV_EndBug> xfs_trans_log_buf ( args -> trans , bp1 , XFS_DA_LOGRANGE ( leaf1 , name_rmt , sizeof ( * name_rmt ) ) ) ; } entry2 -> flags |= XFS_ATTR_INCOMPLETE ; xfs_trans_log_buf ( args -> trans , bp2 , XFS_DA_LOGRANGE ( leaf2 , entry2 , sizeof ( * entry2 ) ) ) ; if ( ( entry2 -> flags & XFS_ATTR_LOCAL ) == 0 ) { name_rmt = xfs_attr3_leaf_name_remote ( leaf2 , args -> index2 ) ; name_rmt -> valueblk = 0 ; name_rmt -> valuelen = 0 ; xfs_trans_log_buf ( args -> trans , bp2 , XFS_DA_LOGRANGE ( leaf2 , name_rmt , sizeof ( * name_rmt ) ) ) ; } error = xfs_trans_roll ( & args -> trans , args -> dp ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( args -> rmtvaluelen <S2SV_ModEnd> ) ; xfs_trans_log_buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16357\n\n```\nCWE-119 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; <S2SV_StartBug> if ( shdr -> sh_size < 1 ) { <S2SV_EndBug> return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; for ( cnt = 0 , i = 0 ; i >= 0 && cnt < shdr -> sh_info && ( ( char * ) defs + i < end ) ; ++ cnt ) { Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; char key [ 32 ] = { 0 } ; Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) int vdaux = verdef -> vd_aux ; if ( vdaux < 1 ) { sdb_free ( sdb_verdef ) ; goto out_error ; } vstart += vdaux ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; } i += verdef -> vd_next ; } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sh_size < 1 || shdr -> sh_size > SIZE_MAX\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5592\n\n```\nCWE-20 static gboolean _handle_carbons ( xmpp_stanza_t * const stanza ) { xmpp_stanza_t * carbons = xmpp_stanza_get_child_by_ns ( stanza , STANZA_NS_CARBONS ) ; if ( ! carbons ) { return FALSE ; } const char * name = xmpp_stanza_get_name ( carbons ) ; if ( ! name ) { log_error ( \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>stanza<S2SV_blank>name<S2SV_blank>for<S2SV_blank>Carbon\" ) ; return TRUE ; } if ( g_strcmp0 ( name , \"private\" ) == 0 ) { log_info ( \"Carbon<S2SV_blank>received<S2SV_blank>with<S2SV_blank>private<S2SV_blank>element.\" ) ; return FALSE ; } if ( ( g_strcmp0 ( name , \"received\" ) != 0 ) && ( g_strcmp0 ( name , \"sent\" ) != 0 ) ) { log_warning ( \"Carbon<S2SV_blank>received<S2SV_blank>with<S2SV_blank>unrecognised<S2SV_blank>stanza<S2SV_blank>name:<S2SV_blank>%s\" , name ) ; return TRUE ; } xmpp_stanza_t * forwarded = xmpp_stanza_get_child_by_ns ( carbons , STANZA_NS_FORWARD ) ; if ( ! forwarded ) { log_warning ( \"Carbon<S2SV_blank>received<S2SV_blank>with<S2SV_blank>no<S2SV_blank>forwarded<S2SV_blank>element\" ) ; return TRUE ; } xmpp_stanza_t * message = xmpp_stanza_get_child_by_name ( forwarded , STANZA_NAME_MESSAGE ) ; if ( ! message ) { log_warning ( \"Carbon<S2SV_blank>received<S2SV_blank>with<S2SV_blank>no<S2SV_blank>message<S2SV_blank>element\" ) ; return TRUE ; } char * message_txt = xmpp_message_get_body ( message ) ; if ( ! message_txt ) { log_warning ( \"Carbon<S2SV_blank>received<S2SV_blank>with<S2SV_blank>no<S2SV_blank>message.\" ) ; return TRUE ; } <S2SV_StartBug> const gchar * to = xmpp_stanza_get_to ( message ) ; <S2SV_EndBug> const gchar * from = xmpp_stanza_get_from ( message ) ; if ( ! to ) to = from ; Jid * jid_from = jid_create ( from ) ; <S2SV_StartBug> Jid * jid_to = jid_create ( to ) ; <S2SV_EndBug> Jid * my_jid = jid_create ( connection_get_fulljid ( ) ) ; char * enc_message = NULL ; xmpp_stanza_t * x = xmpp_stanza_get_child_by_ns ( message , STANZA_NS_ENCRYPTED ) ; if ( x ) { enc_message = xmpp_stanza_get_text ( x ) ; } if ( g_strcmp0 ( my_jid -> barejid , jid_to -> barejid ) == 0 ) { sv_ev_incoming_carbon ( jid_from -> barejid , jid_from -> resourcepart , message_txt , enc_message ) ; } else { sv_ev_outgoing_carbon ( jid_to -> barejid , message_txt , enc_message ) ; } xmpp_ctx_t * ctx = connection_get_ctx ( ) ; xmpp_free ( ctx , message_txt ) ; xmpp_free ( ctx , enc_message ) ; jid_destroy ( jid_from ) ; jid_destroy ( jid_to ) ; jid_destroy ( my_jid ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TRUE ; } Jid * my_jid = jid_create ( connection_get_fulljid ( ) ) ; const char * const stanza_from = xmpp_stanza_get_from ( stanza ) ; Jid * msg_jid = jid_create ( stanza_from ) ; if ( g_strcmp0 ( my_jid -> barejid , msg_jid -> barejid ) != 0 ) { log_warning ( \"Invalid<S2SV_blank>carbon<S2SV_blank>received,<S2SV_blank>from:<S2SV_blank>%s\" , stanza_from ) ; return TRUE ; } <S2SV_ModStart> jid_create ( to <S2SV_ModEnd> ) ; char\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 static int sc_pkcs15emu_esteid_init ( sc_pkcs15_card_t * p15card ) { sc_card_t * card = p15card -> card ; unsigned char buff [ 128 ] ; int r , i ; size_t field_length = 0 , modulus_length = 0 ; sc_path_t tmppath ; set_string ( & p15card -> tokeninfo -> label , \"ID-kaart\" ) ; set_string ( & p15card -> tokeninfo -> manufacturer_id , \"AS<S2SV_blank>Sertifitseerimiskeskus\" ) ; sc_format_path ( \"3f00eeee5044\" , & tmppath ) ; r = sc_select_file ( card , & tmppath , NULL ) ; SC_TEST_RET ( card -> ctx , SC_LOG_DEBUG_NORMAL , r , \"select<S2SV_blank>esteid<S2SV_blank>PD<S2SV_blank>failed\" ) ; r = sc_read_record ( card , SC_ESTEID_PD_DOCUMENT_NR , buff , sizeof ( buff ) , SC_RECORD_BY_REC_NR ) ; SC_TEST_RET ( card -> ctx , SC_LOG_DEBUG_NORMAL , r , \"read<S2SV_blank>document<S2SV_blank>number<S2SV_blank>failed\" ) ; <S2SV_StartBug> buff [ r ] = '\\\\0' ; <S2SV_EndBug> set_string ( & p15card -> tokeninfo -> serial_number , ( const char * ) buff ) ; p15card -> tokeninfo -> flags = SC_PKCS15_TOKEN_PRN_GENERATION | SC_PKCS15_TOKEN_EID_COMPLIANT | SC_PKCS15_TOKEN_READONLY ; for ( i = 0 ; i < 2 ; i ++ ) { static const char * esteid_cert_names [ 2 ] = { \"Isikutuvastus\" , \"Allkirjastamine\" } ; static char const * esteid_cert_paths [ 2 ] = { \"3f00eeeeaace\" , \"3f00eeeeddce\" } ; static int esteid_cert_ids [ 2 ] = { 1 , 2 } ; struct sc_pkcs15_cert_info cert_info ; struct sc_pkcs15_object cert_obj ; memset ( & cert_info , 0 , sizeof ( cert_info ) ) ; memset ( & cert_obj , 0 , sizeof ( cert_obj ) ) ; cert_info . id . value [ 0 ] = esteid_cert_ids [ i ] ; cert_info . id . len = 1 ; sc_format_path ( esteid_cert_paths [ i ] , & cert_info . path ) ; strlcpy ( cert_obj . label , esteid_cert_names [ i ] , sizeof ( cert_obj . label ) ) ; r = sc_pkcs15emu_add_x509_cert ( p15card , & cert_obj , & cert_info ) ; if ( r < 0 ) return SC_ERROR_INTERNAL ; if ( i == 0 ) { sc_pkcs15_cert_t * cert = NULL ; r = sc_pkcs15_read_certificate ( p15card , & cert_info , & cert ) ; if ( r < 0 ) return SC_ERROR_INTERNAL ; if ( cert -> key -> algorithm == SC_ALGORITHM_EC ) field_length = cert -> key -> u . ec . params . field_length ; else modulus_length = cert -> key -> u . rsa . modulus . len * 8 ; if ( r == SC_SUCCESS ) { static const struct sc_object_id cn_oid = { { 2 , 5 , 4 , 3 , - 1 } } ; u8 * cn_name = NULL ; size_t cn_len = 0 ; sc_pkcs15_get_name_from_dn ( card -> ctx , cert -> subject , cert -> subject_len , & cn_oid , & cn_name , & cn_len ) ; if ( cn_len > 0 ) { char * token_name = malloc ( cn_len + 1 ) ; if ( token_name ) { memcpy ( token_name , cn_name , cn_len ) ; token_name [ cn_len ] = '\\\\0' ; set_string ( & p15card -> tokeninfo -> label , ( const char * ) token_name ) ; free ( token_name ) ; } } free ( cn_name ) ; sc_pkcs15_free_certificate ( cert ) ; } } } sc_format_path ( \"3f000016\" , & tmppath ) ; r = sc_select_file ( card , & tmppath , NULL ) ; if ( r < 0 ) return SC_ERROR_INTERNAL ; for ( i = 0 ; i < 3 ; i ++ ) { unsigned char tries_left ; static const char * esteid_pin_names [ 3 ] = { \"PIN1\" , \"PIN2\" , \"PUK\" } ; static const int esteid_pin_min [ 3 ] = { 4 , 5 , 8 } ; static const int esteid_pin_ref [ 3 ] = { 1 , 2 , 0 } ; static const int esteid_pin_authid [ 3 ] = { 1 , 2 , 3 } ; static const int esteid_pin_flags [ 3 ] = { 0 , 0 , SC_PKCS15_PIN_FLAG_UNBLOCKING_PIN } ; struct sc_pkcs15_auth_info pin_info ; struct sc_pkcs15_object pin_obj ; memset ( & pin_info , 0 , sizeof ( pin_info ) ) ; memset ( & pin_obj , 0 , sizeof ( pin_obj ) ) ; r = sc_read_record ( card , i + 1 , buff , sizeof ( buff ) , SC_RECORD_BY_REC_NR ) ; if ( r < 0 ) return SC_ERROR_INTERNAL ; tries_left = buff [ 5 ] ; pin_info . auth_id . len = 1 ; pin_info . auth_id . value [ 0 ] = esteid_pin_authid [ i ] ; pin_info . auth_type = SC_PKCS15_PIN_AUTH_TYPE_PIN ; pin_info . attrs . pin . reference = esteid_pin_ref [ i ] ; pin_info . attrs . pin . flags = esteid_pin_flags [ i ] ; pin_info . attrs . pin . type = SC_PKCS15_PIN_TYPE_ASCII_NUMERIC ; pin_info . attrs . pin . min_length = esteid_pin_min [ i ] ; pin_info . attrs . pin . stored_length = 12 ; pin_info . attrs . pin . max_length = 12 ; pin_info . attrs . pin . pad_char = '\\\\0' ; pin_info . tries_left = ( int ) tries_left ; pin_info . max_tries = 3 ; strlcpy ( pin_obj . label , esteid_pin_names [ i ] , sizeof ( pin_obj . label ) ) ; pin_obj . flags = esteid_pin_flags [ i ] ; if ( i < 2 ) { pin_obj . auth_id . len = 1 ; pin_obj . auth_id . value [ 0 ] = 3 ; } r = sc_pkcs15emu_add_pin_obj ( p15card , & pin_obj , & pin_info ) ; if ( r < 0 ) return SC_ERROR_INTERNAL ; } for ( i = 0 ; i < 2 ; i ++ ) { static int prkey_pin [ 2 ] = { 1 , 2 } ; static const char * prkey_name [ 2 ] = { \"Isikutuvastus\" , \"Allkirjastamine\" } ; struct sc_pkcs15_prkey_info prkey_info ; struct sc_pkcs15_object prkey_obj ; memset ( & prkey_info , 0 , sizeof ( prkey_info ) ) ; memset ( & prkey_obj , 0 , sizeof ( prkey_obj ) ) ; prkey_info . id . len = 1 ; prkey_info . id . value [ 0 ] = prkey_pin [ i ] ; prkey_info . native = 1 ; prkey_info . key_reference = i + 1 ; prkey_info . field_length = field_length ; prkey_info . modulus_length = modulus_length ; if ( i == 1 ) prkey_info . usage = SC_PKCS15_PRKEY_USAGE_NONREPUDIATION ; else if ( field_length > 0 ) prkey_info . usage = SC_PKCS15_PRKEY_USAGE_SIGN | SC_PKCS15_PRKEY_USAGE_DERIVE ; else prkey_info . usage = SC_PKCS15_PRKEY_USAGE_SIGN | SC_PKCS15_PRKEY_USAGE_ENCRYPT | SC_PKCS15_PRKEY_USAGE_DECRYPT ; strlcpy ( prkey_obj . label , prkey_name [ i ] , sizeof ( prkey_obj . label ) ) ; prkey_obj . auth_id . len = 1 ; prkey_obj . auth_id . value [ 0 ] = prkey_pin [ i ] ; prkey_obj . user_consent = 0 ; prkey_obj . flags = SC_PKCS15_CO_FLAG_PRIVATE ; if ( field_length > 0 ) r = sc_pkcs15emu_add_ec_prkey ( p15card , & prkey_obj , & prkey_info ) ; else r = sc_pkcs15emu_add_rsa_prkey ( p15card , & prkey_obj , & prkey_info ) ; if ( r < 0 ) return SC_ERROR_INTERNAL ; } return SC_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; buff [ MIN ( ( size_t ) r , ( sizeof buff ) - 1 ) <S2SV_ModEnd> ] = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8812\n\n```\nCWE-000 static int iwch_l2t_send ( struct t3cdev * tdev , struct sk_buff * skb , struct l2t_entry * l2e ) { int error = 0 ; struct cxio_rdev * rdev ; rdev = ( struct cxio_rdev * ) tdev -> ulp ; if ( cxio_fatal_error ( rdev ) ) { kfree_skb ( skb ) ; return - EIO ; } error = l2t_send ( tdev , skb , l2e ) ; if ( error < 0 ) kfree_skb ( skb ) ; <S2SV_StartBug> return error ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return error < 0 ? error : 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9226\n\n```\nCWE-787 static int fetch_token_in_cc ( OnigToken * tok , UChar * * src , UChar * end , ScanEnv * env ) { int num ; OnigCodePoint c , c2 ; OnigSyntaxType * syn = env -> syntax ; OnigEncoding enc = env -> enc ; UChar * prev ; UChar * p = * src ; PFETCH_READY ; if ( PEND ) { tok -> type = TK_EOT ; return tok -> type ; } PFETCH ( c ) ; tok -> type = TK_CHAR ; tok -> base = 0 ; tok -> u . c = c ; tok -> escaped = 0 ; if ( c == ']' ) { tok -> type = TK_CC_CLOSE ; } else if ( c == '-' ) { tok -> type = TK_CC_RANGE ; } else if ( c == MC_ESC ( syn ) ) { if ( ! IS_SYNTAX_BV ( syn , ONIG_SYN_BACKSLASH_ESCAPE_IN_CC ) ) goto end ; if ( PEND ) return ONIGERR_END_PATTERN_AT_ESCAPE ; PFETCH ( c ) ; tok -> escaped = 1 ; tok -> u . c = c ; switch ( c ) { case 'w' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 0 ; break ; case 'W' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 1 ; break ; case 'd' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 0 ; break ; case 'D' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 1 ; break ; case 's' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 0 ; break ; case 'S' : tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 1 ; break ; case 'h' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 0 ; break ; case 'H' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 1 ; break ; case 'p' : case 'P' : if ( PEND ) break ; c2 = PPEEK ; if ( c2 == '{' && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY ) ) { PINC ; tok -> type = TK_CHAR_PROPERTY ; tok -> u . prop . not = ( c == 'P' ? 1 : 0 ) ; if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT ) ) { PFETCH ( c2 ) ; if ( c2 == '^' ) { tok -> u . prop . not = ( tok -> u . prop . not == 0 ? 1 : 0 ) ; } else PUNFETCH ; } } break ; case 'x' : if ( PEND ) break ; prev = p ; if ( PPEEK_IS ( '{' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_BRACE_HEX8 ) ) { PINC ; num = scan_unsigned_hexadecimal_number ( & p , end , 8 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE ; if ( ! PEND ) { c2 = PPEEK ; if ( ONIGENC_IS_CODE_XDIGIT ( enc , c2 ) ) return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE ; } if ( p > prev + enclen ( enc , prev ) && ! PEND && ( PPEEK_IS ( '}' ) ) ) { PINC ; tok -> type = TK_CODE_POINT ; tok -> base = 16 ; tok -> u . code = ( OnigCodePoint ) num ; } else { p = prev ; } } else if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_HEX2 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 2 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 16 ; tok -> u . c = num ; } break ; case 'u' : if ( PEND ) break ; prev = p ; if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_U_HEX4 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 4 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_CODE_POINT ; tok -> base = 16 ; tok -> u . code = ( OnigCodePoint ) num ; } break ; case '0' : case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_OCTAL3 ) ) { PUNFETCH ; prev = p ; num = scan_unsigned_octal_number ( & p , end , 3 , enc ) ; <S2SV_StartBug> if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; <S2SV_EndBug> if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 8 ; tok -> u . c = num ; } break ; default : PUNFETCH ; num = fetch_escaped_value ( & p , end , env , & c2 ) ; if ( num < 0 ) return num ; if ( tok -> u . c != c2 ) { tok -> u . code = c2 ; tok -> type = TK_CODE_POINT ; } break ; } } else if ( c == '[' ) { if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_POSIX_BRACKET ) && ( PPEEK_IS ( ':' ) ) ) { OnigCodePoint send [ ] = { ( OnigCodePoint ) ':' , ( OnigCodePoint ) ']' } ; tok -> backp = p ; PINC ; if ( str_exist_check_with_esc ( send , 2 , p , end , ( OnigCodePoint ) ']' , enc , syn ) ) { tok -> type = TK_POSIX_BRACKET_OPEN ; } else { PUNFETCH ; goto cc_in_cc ; } } else { cc_in_cc : if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_CCLASS_SET_OP ) ) { tok -> type = TK_CC_CC_OPEN ; } else { CC_ESC_WARN ( env , ( UChar * ) \"[\" ) ; } } } else if ( c == '&' ) { if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_CCLASS_SET_OP ) && ! PEND && ( PPEEK_IS ( '&' ) ) ) { PINC ; tok -> type = TK_CC_AND ; } } end : * src = p ; return tok -> type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> num < 0 || num >= 256\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13052\n\n```\nCWE-125 static int cfm_network_addr_print ( netdissect_options * ndo , <S2SV_StartBug> register const u_char * tptr ) <S2SV_EndBug> { u_int network_addr_type ; <S2SV_StartBug> u_int hexdump = FALSE ; <S2SV_EndBug> network_addr_type = * tptr ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Network<S2SV_blank>Address<S2SV_blank>Type<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown\" , network_addr_type ) , network_addr_type ) ) ; switch ( network_addr_type ) { case AFNUM_INET : <S2SV_StartBug> ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr + 1 ) ) ) ; <S2SV_EndBug> break ; case AFNUM_INET6 : <S2SV_StartBug> ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr + 1 ) ) ) ; <S2SV_EndBug> break ; default : hexdump = TRUE ; break ; } return hexdump ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_char * tptr , const u_int length ) { u_int network_addr_type ; u_int <S2SV_ModEnd> hexdump = FALSE <S2SV_ModStart> = FALSE ; if ( length < 1 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Network<S2SV_blank>Address<S2SV_blank>Type<S2SV_blank>(invalid,<S2SV_blank>no<S2SV_blank>data\" ) ) ; return hexdump ; } <S2SV_ModStart> case AFNUM_INET : if ( length != 1 + 4 ) { ND_PRINT ( ( ndo , \"(invalid<S2SV_blank>IPv4<S2SV_blank>address<S2SV_blank>length<S2SV_blank>%u)\" , length - 1 ) ) ; hexdump = TRUE ; break ; } <S2SV_ModStart> case AFNUM_INET6 : if ( length != 1 + 16 ) { ND_PRINT ( ( ndo , \"(invalid<S2SV_blank>IPv6<S2SV_blank>address<S2SV_blank>length<S2SV_blank>%u)\" , length - 1 ) ) ; hexdump = TRUE ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int rd_cost_mbuv ( MACROBLOCK * mb ) { int b ; int cost = 0 ; MACROBLOCKD * x = & mb -> e_mbd ; ENTROPY_CONTEXT_PLANES t_above , t_left ; ENTROPY_CONTEXT * ta ; ENTROPY_CONTEXT * tl ; <S2SV_StartBug> vpx_memcpy ( & t_above , mb -> e_mbd . above_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & t_left , mb -> e_mbd . left_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> ta = ( ENTROPY_CONTEXT * ) & t_above ; tl = ( ENTROPY_CONTEXT * ) & t_left ; for ( b = 16 ; b < 24 ; b ++ ) cost += cost_coeffs ( mb , x -> block + b , PLANE_TYPE_UV , ta + vp8_block2above [ b ] , tl + vp8_block2left [ b ] ) ; return cost ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tl ; memcpy <S2SV_ModEnd> ( & t_above <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & t_left\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-0429\n\n```\nCWE-119 void read_sequence_header ( decoder_info_t * decoder_info , stream_t * stream ) { decoder_info -> width = get_flc ( 16 , stream ) ; decoder_info -> height = get_flc ( 16 , stream ) ; <S2SV_StartBug> decoder_info -> log2_sb_size = get_flc ( 3 , stream ) ; <S2SV_EndBug> decoder_info -> pb_split = get_flc ( 1 , stream ) ; decoder_info -> tb_split_enable = get_flc ( 1 , stream ) ; decoder_info -> max_num_ref = get_flc ( 2 , stream ) + 1 ; decoder_info -> interp_ref = get_flc ( 2 , stream ) ; decoder_info -> max_delta_qp = get_flc ( 1 , stream ) ; decoder_info -> deblocking = get_flc ( 1 , stream ) ; decoder_info -> clpf = get_flc ( 1 , stream ) ; decoder_info -> use_block_contexts = get_flc ( 1 , stream ) ; decoder_info -> bipred = get_flc ( 2 , stream ) ; decoder_info -> qmtx = get_flc ( 1 , stream ) ; if ( decoder_info -> qmtx ) { decoder_info -> qmtx_offset = get_flc ( 6 , stream ) - 32 ; } decoder_info -> subsample = get_flc ( 2 , stream ) ; decoder_info -> subsample = ( decoder_info -> subsample & 1 ) * 20 + ( decoder_info -> subsample & 2 ) * 22 + ( ( decoder_info -> subsample & 3 ) == 3 ) * 2 + 400 ; decoder_info -> num_reorder_pics = get_flc ( 4 , stream ) ; if ( decoder_info -> subsample != 400 ) { decoder_info -> cfl_intra = get_flc ( 1 , stream ) ; decoder_info -> cfl_inter = get_flc ( 1 , stream ) ; } decoder_info -> bitdepth = get_flc ( 1 , stream ) ? 10 : 8 ; if ( decoder_info -> bitdepth == 10 ) decoder_info -> bitdepth += 2 * get_flc ( 1 , stream ) ; decoder_info -> input_bitdepth = get_flc ( 1 , stream ) ? 10 : 8 ; if ( decoder_info -> input_bitdepth == 10 ) decoder_info -> input_bitdepth += 2 * get_flc ( 1 , stream ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 3 , stream ) ; decoder_info -> log2_sb_size = clip ( decoder_info -> log2_sb_size , log2i ( MIN_BLOCK_SIZE ) , log2i ( MAX_SB_SIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void optimize_mb ( MACROBLOCK * x ) { int b ; int type ; int has_2nd_order ; ENTROPY_CONTEXT_PLANES t_above , t_left ; ENTROPY_CONTEXT * ta ; ENTROPY_CONTEXT * tl ; <S2SV_StartBug> vpx_memcpy ( & t_above , x -> e_mbd . above_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & t_left , x -> e_mbd . left_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> ta = ( ENTROPY_CONTEXT * ) & t_above ; tl = ( ENTROPY_CONTEXT * ) & t_left ; has_2nd_order = ( x -> e_mbd . mode_info_context -> mbmi . mode != B_PRED && x -> e_mbd . mode_info_context -> mbmi . mode != SPLITMV ) ; type = has_2nd_order ? PLANE_TYPE_Y_NO_DC : PLANE_TYPE_Y_WITH_DC ; for ( b = 0 ; b < 16 ; b ++ ) { optimize_b ( x , b , type , ta + vp8_block2above [ b ] , tl + vp8_block2left [ b ] ) ; } for ( b = 16 ; b < 24 ; b ++ ) { optimize_b ( x , b , PLANE_TYPE_UV , ta + vp8_block2above [ b ] , tl + vp8_block2left [ b ] ) ; } if ( has_2nd_order ) { b = 24 ; optimize_b ( x , b , PLANE_TYPE_Y2 , ta + vp8_block2above [ b ] , tl + vp8_block2left [ b ] ) ; check_reset_2nd_coeffs ( & x -> e_mbd , PLANE_TYPE_Y2 , ta + vp8_block2above [ b ] , tl + vp8_block2left [ b ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tl ; memcpy <S2SV_ModEnd> ( & t_above <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & t_left\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_write_nmv_probs ( VP9_COMMON * cm , int usehp , vp9_writer * w ) { <S2SV_EndBug> int i , j ; <S2SV_StartBug> nmv_context * const mvc = & cm -> fc . nmvc ; <S2SV_EndBug> nmv_context_counts * const counts = & cm -> counts . mv ; write_mv_update ( vp9_mv_joint_tree , mvc -> joints , counts -> joints , MV_JOINTS , w ) ; for ( i = 0 ; i < 2 ; ++ i ) { nmv_component * comp = & mvc -> comps [ i ] ; nmv_component_counts * comp_counts = & counts -> comps [ i ] ; update_mv ( w , comp_counts -> sign , & comp -> sign , MV_UPDATE_PROB ) ; write_mv_update ( vp9_mv_class_tree , comp -> classes , comp_counts -> classes , MV_CLASSES , w ) ; write_mv_update ( vp9_mv_class0_tree , comp -> class0 , comp_counts -> class0 , CLASS0_SIZE , w ) ; for ( j = 0 ; j < MV_OFFSET_BITS ; ++ j ) update_mv ( w , comp_counts -> bits [ j ] , & comp -> bits [ j ] , MV_UPDATE_PROB ) ; } for ( i = 0 ; i < 2 ; ++ i ) { for ( j = 0 ; j < CLASS0_SIZE ; ++ j ) write_mv_update ( vp9_mv_fp_tree , mvc -> comps [ i ] . class0_fp [ j ] , counts -> comps [ i ] . class0_fp [ j ] , MV_FP_SIZE , w ) ; write_mv_update ( vp9_mv_fp_tree , mvc -> comps [ i ] . fp , counts -> comps [ i ] . fp , MV_FP_SIZE , w ) ; } if ( usehp ) { for ( i = 0 ; i < 2 ; ++ i ) { update_mv ( w , counts -> comps [ i ] . class0_hp , & mvc -> comps [ i ] . class0_hp , MV_UPDATE_PROB ) ; update_mv ( w , counts -> comps [ i ] . hp , & mvc -> comps [ i ] . hp , MV_UPDATE_PROB ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int usehp , vpx_writer * w , nmv_context_counts * const counts <S2SV_ModEnd> ) { int <S2SV_ModStart> cm -> fc -> nmvc ; <S2SV_ModEnd> write_mv_update ( vp9_mv_joint_tree\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9919\n\n```\nCWE-20 static void icmp6_send ( struct sk_buff * skb , u8 type , u8 code , __u32 info , const struct in6_addr * force_saddr ) { struct net * net = dev_net ( skb -> dev ) ; struct inet6_dev * idev = NULL ; struct ipv6hdr * hdr = ipv6_hdr ( skb ) ; struct sock * sk ; struct ipv6_pinfo * np ; const struct in6_addr * saddr = NULL ; struct dst_entry * dst ; struct icmp6hdr tmp_hdr ; struct flowi6 fl6 ; struct icmpv6_msg msg ; struct sockcm_cookie sockc_unused = { 0 } ; struct ipcm6_cookie ipc6 ; int iif = 0 ; int addr_type = 0 ; int len ; int err = 0 ; u32 mark = IP6_REPLY_MARK ( net , skb -> mark ) ; if ( ( u8 * ) hdr < skb -> head || ( skb_network_header ( skb ) + sizeof ( * hdr ) ) > skb_tail_pointer ( skb ) ) return ; addr_type = ipv6_addr_type ( & hdr -> daddr ) ; if ( ipv6_chk_addr ( net , & hdr -> daddr , skb -> dev , 0 ) || ipv6_chk_acast_addr_src ( net , skb -> dev , & hdr -> daddr ) ) saddr = & hdr -> daddr ; if ( addr_type & IPV6_ADDR_MULTICAST || skb -> pkt_type != PACKET_HOST ) { if ( type != ICMPV6_PKT_TOOBIG && ! ( type == ICMPV6_PARAMPROB && code == ICMPV6_UNK_OPTION && ( opt_unrec ( skb , info ) ) ) ) return ; saddr = NULL ; } addr_type = ipv6_addr_type ( & hdr -> saddr ) ; if ( __ipv6_addr_needs_scope_id ( addr_type ) ) iif = skb -> dev -> ifindex ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> iif = l3mdev_master_ifindex ( skb_dst ( skb ) -> dev ) ; <S2SV_EndBug> if ( ( addr_type == IPV6_ADDR_ANY ) || ( addr_type & IPV6_ADDR_MULTICAST ) ) { net_dbg_ratelimited ( \"icmp6_send:<S2SV_blank>addr_any/mcast<S2SV_blank>source<S2SV_blank>[%pI6c<S2SV_blank>><S2SV_blank>%pI6c]\\\\n\" , & hdr -> saddr , & hdr -> daddr ) ; return ; } if ( is_ineligible ( skb ) ) { net_dbg_ratelimited ( \"icmp6_send:<S2SV_blank>no<S2SV_blank>reply<S2SV_blank>to<S2SV_blank>icmp<S2SV_blank>error<S2SV_blank>[%pI6c<S2SV_blank>><S2SV_blank>%pI6c]\\\\n\" , & hdr -> saddr , & hdr -> daddr ) ; return ; } mip6_addr_swap ( skb ) ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_proto = IPPROTO_ICMPV6 ; fl6 . daddr = hdr -> saddr ; if ( force_saddr ) saddr = force_saddr ; if ( saddr ) fl6 . saddr = * saddr ; fl6 . flowi6_mark = mark ; fl6 . flowi6_oif = iif ; fl6 . fl6_icmp_type = type ; fl6 . fl6_icmp_code = code ; security_skb_classify_flow ( skb , flowi6_to_flowi ( & fl6 ) ) ; sk = icmpv6_xmit_lock ( net ) ; if ( ! sk ) return ; sk -> sk_mark = mark ; np = inet6_sk ( sk ) ; if ( ! icmpv6_xrlim_allow ( sk , type , & fl6 ) ) goto out ; tmp_hdr . icmp6_type = type ; tmp_hdr . icmp6_code = code ; tmp_hdr . icmp6_cksum = 0 ; tmp_hdr . icmp6_pointer = htonl ( info ) ; if ( ! fl6 . flowi6_oif && ipv6_addr_is_multicast ( & fl6 . daddr ) ) fl6 . flowi6_oif = np -> mcast_oif ; else if ( ! fl6 . flowi6_oif ) fl6 . flowi6_oif = np -> ucast_oif ; ipc6 . tclass = np -> tclass ; fl6 . flowlabel = ip6_make_flowinfo ( ipc6 . tclass , fl6 . flowlabel ) ; dst = icmpv6_route_lookup ( net , skb , sk , & fl6 ) ; if ( IS_ERR ( dst ) ) goto out ; ipc6 . hlimit = ip6_sk_dst_hoplimit ( np , & fl6 , dst ) ; ipc6 . dontfrag = np -> dontfrag ; ipc6 . opt = NULL ; msg . skb = skb ; msg . offset = skb_network_offset ( skb ) ; msg . type = type ; len = skb -> len - msg . offset ; len = min_t ( unsigned int , len , IPV6_MIN_MTU - sizeof ( struct ipv6hdr ) - sizeof ( struct icmp6hdr ) ) ; if ( len < 0 ) { net_dbg_ratelimited ( \"icmp:<S2SV_blank>len<S2SV_blank>problem<S2SV_blank>[%pI6c<S2SV_blank>><S2SV_blank>%pI6c]\\\\n\" , & hdr -> saddr , & hdr -> daddr ) ; goto out_dst_release ; } rcu_read_lock ( ) ; idev = __in6_dev_get ( skb -> dev ) ; err = ip6_append_data ( sk , icmpv6_getfrag , & msg , len + sizeof ( struct icmp6hdr ) , sizeof ( struct icmp6hdr ) , & ipc6 , & fl6 , ( struct rt6_info * ) dst , MSG_DONTWAIT , & sockc_unused ) ; if ( err ) { ICMP6_INC_STATS ( net , idev , ICMP6_MIB_OUTERRORS ) ; ip6_flush_pending_frames ( sk ) ; } else { err = icmpv6_push_pending_frames ( sk , & fl6 , & tmp_hdr , len + sizeof ( struct icmp6hdr ) ) ; } rcu_read_unlock ( ) ; out_dst_release : dst_release ( dst ) ; out : icmpv6_xmit_unlock ( sk ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ifindex ; else { dst = skb_dst ( skb ) ; <S2SV_ModStart> = l3mdev_master_ifindex ( dst ? dst -> dev : skb -> dev ) ; } <S2SV_ModEnd> if ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13307\n\n```\nCWE-787 static PixelChannels * * AcquirePixelThreadSet ( const Image * images ) { const Image * next ; PixelChannels * * pixels ; register ssize_t i ; size_t columns , <S2SV_StartBug> number_threads ; <S2SV_EndBug> <S2SV_StartBug> number_threads = ( size_t ) GetMagickResourceLimit ( ThreadResource ) ; <S2SV_EndBug> <S2SV_StartBug> pixels = ( PixelChannels * * ) AcquireQuantumMemory ( number_threads , <S2SV_EndBug> sizeof ( * pixels ) ) ; if ( pixels == ( PixelChannels * * ) NULL ) return ( ( PixelChannels * * ) NULL ) ; <S2SV_StartBug> ( void ) memset ( pixels , 0 , number_threads * sizeof ( * pixels ) ) ; <S2SV_EndBug> columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) number_threads ; i ++ ) <S2SV_EndBug> { register ssize_t j ; pixels [ i ] = ( PixelChannels * ) AcquireQuantumMemory ( columns , sizeof ( * * pixels ) ) ; if ( pixels [ i ] == ( PixelChannels * ) NULL ) return ( DestroyPixelThreadSet ( pixels ) ) ; for ( j = 0 ; j < ( ssize_t ) columns ; j ++ ) { register ssize_t k ; for ( k = 0 ; k < MaxPixelChannels ; k ++ ) pixels [ i ] [ j ] . channel [ k ] = 0.0 ; } } return ( pixels ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t columns , rows ; rows = MagickMax ( GetImageListLength ( images ) , <S2SV_ModEnd> ( size_t ) <S2SV_ModStart> ( ThreadResource ) ) <S2SV_ModStart> ) AcquireQuantumMemory ( rows , <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> NULL ) ; columns = MaxPixelChannels ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; for ( i = 0 <S2SV_ModEnd> ; i < <S2SV_ModStart> ( ssize_t ) rows <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void temporal_filter_iterate_c ( VP9_COMP * cpi , <S2SV_StartBug> int frame_count , <S2SV_EndBug> int alt_ref_index , int strength , struct scale_factors * scale ) { int byte ; int frame ; int mb_col , mb_row ; unsigned int filter_weight ; <S2SV_StartBug> int mb_cols = cpi -> common . mb_cols ; <S2SV_EndBug> <S2SV_StartBug> int mb_rows = cpi -> common . mb_rows ; <S2SV_EndBug> int mb_y_offset = 0 ; int mb_uv_offset = 0 ; <S2SV_StartBug> DECLARE_ALIGNED_ARRAY ( 16 , unsigned int , accumulator , 16 * 16 * 3 ) ; <S2SV_EndBug> <S2SV_StartBug> DECLARE_ALIGNED_ARRAY ( 16 , uint16_t , count , 16 * 16 * 3 ) ; <S2SV_EndBug> <S2SV_StartBug> MACROBLOCKD * mbd = & cpi -> mb . e_mbd ; <S2SV_EndBug> <S2SV_StartBug> YV12_BUFFER_CONFIG * f = cpi -> frames [ alt_ref_index ] ; <S2SV_EndBug> uint8_t * dst1 , * dst2 ; <S2SV_StartBug> DECLARE_ALIGNED_ARRAY ( 16 , uint8_t , predictor , 16 * 16 * 3 ) ; <S2SV_EndBug> const int mb_uv_height = 16 >> mbd -> plane [ 1 ] . subsampling_y ; <S2SV_StartBug> uint8_t * input_buffer [ MAX_MB_PLANE ] ; <S2SV_EndBug> int i ; <S2SV_StartBug> assert ( mbd -> plane [ 1 ] . subsampling_x == mbd -> plane [ 1 ] . subsampling_y ) ; <S2SV_EndBug> for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) input_buffer [ i ] = mbd -> plane [ i ] . pre [ 0 ] . buf ; for ( mb_row = 0 ; mb_row < mb_rows ; mb_row ++ ) { <S2SV_StartBug> # if ALT_REF_MC_ENABLED <S2SV_EndBug> cpi -> mb . mv_row_min = - ( ( mb_row * 16 ) + ( 17 - 2 * VP9_INTERP_EXTEND ) ) ; <S2SV_StartBug> cpi -> mb . mv_row_max = ( ( cpi -> common . mb_rows - 1 - mb_row ) * 16 ) <S2SV_EndBug> + ( 17 - 2 * VP9_INTERP_EXTEND ) ; <S2SV_StartBug> # endif <S2SV_EndBug> for ( mb_col = 0 ; mb_col < mb_cols ; mb_col ++ ) { int i , j , k ; int stride ; <S2SV_StartBug> vpx_memset ( accumulator , 0 , 16 * 16 * 3 * sizeof ( accumulator [ 0 ] ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( count , 0 , 16 * 16 * 3 * sizeof ( count [ 0 ] ) ) ; <S2SV_EndBug> <S2SV_StartBug> # if ALT_REF_MC_ENABLED <S2SV_EndBug> cpi -> mb . mv_col_min = - ( ( mb_col * 16 ) + ( 17 - 2 * VP9_INTERP_EXTEND ) ) ; <S2SV_StartBug> cpi -> mb . mv_col_max = ( ( cpi -> common . mb_cols - 1 - mb_col ) * 16 ) <S2SV_EndBug> + ( 17 - 2 * VP9_INTERP_EXTEND ) ; <S2SV_StartBug> # endif <S2SV_EndBug> for ( frame = 0 ; frame < frame_count ; frame ++ ) { <S2SV_StartBug> if ( cpi -> frames [ frame ] == NULL ) <S2SV_EndBug> continue ; mbd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_mv . row = 0 ; mbd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_mv . col = 0 ; if ( frame == alt_ref_index ) { filter_weight = 2 ; } else { <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> # if ALT_REF_MC_ENABLED # define THRESH_LOW 10000 # define THRESH_HIGH 20000 err = temporal_filter_find_matching_mb_c ( cpi , <S2SV_StartBug> cpi -> frames [ alt_ref_index ] -> y_buffer + mb_y_offset , <S2SV_EndBug> <S2SV_StartBug> cpi -> frames [ frame ] -> y_buffer + mb_y_offset , <S2SV_EndBug> <S2SV_StartBug> cpi -> frames [ frame ] -> y_stride ) ; <S2SV_EndBug> <S2SV_StartBug> # endif <S2SV_EndBug> <S2SV_StartBug> filter_weight = err < THRESH_LOW <S2SV_EndBug> <S2SV_StartBug> ? 2 : err < THRESH_HIGH ? 1 : 0 ; <S2SV_EndBug> } if ( filter_weight != 0 ) { temporal_filter_predictors_mb_c ( mbd , <S2SV_StartBug> cpi -> frames [ frame ] -> y_buffer + mb_y_offset , <S2SV_EndBug> cpi -> frames [ frame ] -> u_buffer + mb_uv_offset , cpi -> frames [ frame ] -> v_buffer + mb_uv_offset , cpi -> frames [ frame ] -> y_stride , mb_uv_height , mbd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_mv . row , mbd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_mv . col , predictor , scale , mb_col * 16 , mb_row * 16 ) ; vp9_temporal_filter_apply ( f -> y_buffer + mb_y_offset , f -> y_stride , predictor , 16 , strength , filter_weight , accumulator , count ) ; vp9_temporal_filter_apply ( f -> u_buffer + mb_uv_offset , f -> uv_stride , predictor + 256 , mb_uv_height , strength , filter_weight , accumulator + 256 , count + 256 ) ; vp9_temporal_filter_apply ( f -> v_buffer + mb_uv_offset , f -> uv_stride , predictor + 512 , mb_uv_height , strength , filter_weight , accumulator + 512 , count + 512 ) ; } } dst1 = cpi -> alt_ref_buffer . y_buffer ; stride = cpi -> alt_ref_buffer . y_stride ; byte = mb_y_offset ; for ( i = 0 , k = 0 ; i < 16 ; i ++ ) { for ( j = 0 ; j < 16 ; j ++ , k ++ ) { unsigned int pval = accumulator [ k ] + ( count [ k ] >> 1 ) ; <S2SV_StartBug> pval *= cpi -> fixed_divide [ count [ k ] ] ; <S2SV_EndBug> pval >>= 19 ; <S2SV_StartBug> dst1 [ byte ] = ( uint8_t ) pval ; <S2SV_EndBug> byte ++ ; } byte += stride - 16 ; } dst1 = cpi -> alt_ref_buffer . u_buffer ; dst2 = cpi -> alt_ref_buffer . v_buffer ; <S2SV_StartBug> stride = cpi -> alt_ref_buffer . uv_stride ; <S2SV_EndBug> byte = mb_uv_offset ; for ( i = 0 , k = 256 ; i < mb_uv_height ; i ++ ) { <S2SV_StartBug> for ( j = 0 ; j < mb_uv_height ; j ++ , k ++ ) { <S2SV_EndBug> int m = k + 256 ; unsigned int pval = accumulator [ k ] + ( count [ k ] >> 1 ) ; <S2SV_StartBug> pval *= cpi -> fixed_divide [ count [ k ] ] ; <S2SV_EndBug> pval >>= 19 ; <S2SV_StartBug> dst1 [ byte ] = ( uint8_t ) pval ; <S2SV_EndBug> pval = accumulator [ m ] + ( count [ m ] >> 1 ) ; <S2SV_StartBug> pval *= cpi -> fixed_divide [ count [ m ] ] ; <S2SV_EndBug> pval >>= 19 ; <S2SV_StartBug> dst2 [ byte ] = ( uint8_t ) pval ; <S2SV_EndBug> byte ++ ; } <S2SV_StartBug> byte += stride - mb_uv_height ; <S2SV_EndBug> } <S2SV_StartBug> mb_y_offset += 16 ; <S2SV_EndBug> <S2SV_StartBug> mb_uv_offset += mb_uv_height ; <S2SV_EndBug> } mb_y_offset += 16 * ( f -> y_stride - mb_cols ) ; <S2SV_StartBug> mb_uv_offset += mb_uv_height * ( f -> uv_stride - mb_cols ) ; <S2SV_EndBug> } for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) mbd -> plane [ i ] . pre [ 0 ] . buf = input_buffer [ i ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , YV12_BUFFER_CONFIG * * frames , <S2SV_ModStart> int mb_cols = ( frames [ alt_ref_index ] -> y_crop_width + 15 ) >> 4 <S2SV_ModEnd> ; int mb_rows <S2SV_ModStart> int mb_rows = ( frames [ alt_ref_index ] -> y_crop_height + 15 ) >> 4 <S2SV_ModEnd> ; int mb_y_offset <S2SV_ModStart> = 0 ; DECLARE_ALIGNED <S2SV_ModEnd> ( 16 , <S2SV_ModStart> int , accumulator [ <S2SV_ModEnd> 16 * 16 <S2SV_ModStart> 16 * 3 ] ) ; DECLARE_ALIGNED <S2SV_ModEnd> ( 16 , <S2SV_ModStart> uint16_t , count [ <S2SV_ModEnd> 16 * 16 <S2SV_ModStart> 16 * 3 ] <S2SV_ModStart> & cpi -> td . <S2SV_ModStart> * f = <S2SV_ModEnd> frames [ alt_ref_index <S2SV_ModStart> * dst2 ; # if CONFIG_VP9_HIGHBITDEPTH DECLARE_ALIGNED ( 16 , uint16_t , predictor16 [ 16 * 16 * 3 ] ) ; DECLARE_ALIGNED <S2SV_ModEnd> ( 16 , <S2SV_ModStart> , uint8_t , predictor8 [ 16 * 16 * 3 ] ) ; uint8_t * predictor ; # else DECLARE_ALIGNED ( 16 , uint8_t , predictor [ <S2SV_ModEnd> 16 * 16 <S2SV_ModStart> 16 * 3 ] ) ; # endif <S2SV_ModEnd> const int mb_uv_height <S2SV_ModStart> . subsampling_y ; const int mb_uv_width = 16 >> mbd -> plane [ 1 ] . subsampling_x ; <S2SV_ModStart> int i ; # if CONFIG_VP9_HIGHBITDEPTH if <S2SV_ModEnd> ( mbd -> <S2SV_ModStart> ( mbd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { predictor = CONVERT_TO_BYTEPTR ( predictor16 ) ; } else { predictor = predictor8 ; } # endif <S2SV_ModEnd> for ( i <S2SV_ModStart> ++ ) { cpi -> td . <S2SV_ModEnd> mb . mv_row_min <S2SV_ModStart> ; cpi -> td . <S2SV_ModStart> = ( ( <S2SV_ModEnd> mb_rows - 1 <S2SV_ModStart> VP9_INTERP_EXTEND ) ; <S2SV_ModEnd> for ( mb_col <S2SV_ModStart> int stride ; memset <S2SV_ModEnd> ( accumulator , <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( count , <S2SV_ModStart> ) ) ; cpi -> td . <S2SV_ModEnd> mb . mv_col_min <S2SV_ModStart> ; cpi -> td . <S2SV_ModStart> = ( ( <S2SV_ModEnd> mb_cols - 1 <S2SV_ModStart> VP9_INTERP_EXTEND ) ; <S2SV_ModEnd> for ( frame <S2SV_ModStart> ++ ) { const int thresh_low = 10000 ; const int thresh_high = 20000 ; if ( <S2SV_ModEnd> frames [ frame <S2SV_ModStart> int err = <S2SV_ModEnd> temporal_filter_find_matching_mb_c ( cpi <S2SV_ModStart> ( cpi , <S2SV_ModEnd> frames [ alt_ref_index <S2SV_ModStart> + mb_y_offset , <S2SV_ModEnd> frames [ frame <S2SV_ModStart> + mb_y_offset , <S2SV_ModEnd> frames [ frame <S2SV_ModStart> y_stride ) ; <S2SV_ModEnd> filter_weight = err <S2SV_ModStart> = err < thresh_low <S2SV_ModEnd> ? 2 : <S2SV_ModStart> : err < thresh_high <S2SV_ModEnd> ? 1 : <S2SV_ModStart> ( mbd , frames [ frame ] -> y_buffer + mb_y_offset , frames [ frame ] -> u_buffer + mb_uv_offset , frames [ frame ] -> v_buffer + mb_uv_offset , frames [ frame ] -> y_stride , mb_uv_width , mb_uv_height , mbd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_mv . row , mbd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_mv . col , predictor , scale , mb_col * 16 , mb_row * 16 ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( mbd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { int adj_strength = strength + 2 * ( mbd -> bd - 8 ) ; vp9_highbd_temporal_filter_apply ( f -> y_buffer + mb_y_offset , f -> y_stride , predictor , 16 , 16 , adj_strength , filter_weight , accumulator , count ) ; vp9_highbd_temporal_filter_apply ( f -> u_buffer + mb_uv_offset , f -> uv_stride , predictor + 256 , mb_uv_width , mb_uv_height , adj_strength , filter_weight , accumulator + 256 , count + 256 ) ; vp9_highbd_temporal_filter_apply ( f -> v_buffer + mb_uv_offset , f -> uv_stride , predictor + 512 , mb_uv_width , mb_uv_height , adj_strength , filter_weight , accumulator + 512 , count + 512 ) ; } else { vp9_temporal_filter_apply ( f -> y_buffer + mb_y_offset , f -> y_stride , predictor , 16 , 16 , strength , filter_weight , accumulator , count ) ; vp9_temporal_filter_apply ( f -> u_buffer + mb_uv_offset , f -> uv_stride , predictor + 256 , mb_uv_width , mb_uv_height , strength , filter_weight , accumulator + 256 , count + 256 ) ; vp9_temporal_filter_apply ( f -> v_buffer + mb_uv_offset , f -> uv_stride , predictor + 512 , mb_uv_width , mb_uv_height , strength , filter_weight , accumulator + 512 , count + 512 ) ; } # else vp9_temporal_filter_apply ( f -> y_buffer + mb_y_offset , f -> y_stride , predictor , 16 , 16 , strength , filter_weight , accumulator , count ) ; vp9_temporal_filter_apply ( f -> u_buffer + mb_uv_offset , f -> uv_stride , predictor + 256 , mb_uv_width , mb_uv_height , strength , filter_weight , accumulator + 256 , count + 256 ) ; vp9_temporal_filter_apply ( f -> v_buffer + mb_uv_offset , f -> uv_stride , predictor + 512 , mb_uv_width , mb_uv_height , strength , filter_weight , accumulator + 512 , count + 512 ) ; # endif } } # if CONFIG_VP9_HIGHBITDEPTH if ( mbd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { uint16_t * dst1_16 ; uint16_t * dst2_16 ; dst1 = cpi -> alt_ref_buffer . y_buffer ; dst1_16 = CONVERT_TO_SHORTPTR ( dst1 ) <S2SV_ModEnd> ; stride = <S2SV_ModStart> ; pval *= <S2SV_ModEnd> fixed_divide [ count <S2SV_ModStart> >>= 19 ; dst1_16 [ byte ] = ( uint16_t <S2SV_ModEnd> ) pval ; <S2SV_ModStart> . v_buffer ; dst1_16 = CONVERT_TO_SHORTPTR ( dst1 ) ; dst2_16 = CONVERT_TO_SHORTPTR ( dst2 ) ; <S2SV_ModStart> ; j < mb_uv_width <S2SV_ModEnd> ; j ++ <S2SV_ModStart> ; pval *= <S2SV_ModEnd> fixed_divide [ count <S2SV_ModStart> >>= 19 ; dst1_16 [ byte ] = ( uint16_t <S2SV_ModEnd> ) pval ; <S2SV_ModStart> ; pval *= <S2SV_ModEnd> fixed_divide [ count <S2SV_ModStart> >>= 19 ; dst2_16 [ byte ] = ( uint16_t <S2SV_ModEnd> ) pval ; <S2SV_ModStart> += stride - mb_uv_width ; } } else { dst1 = cpi -> alt_ref_buffer . y_buffer ; stride = cpi -> alt_ref_buffer . y_stride ; byte = mb_y_offset ; for ( i = 0 , k = 0 ; i < 16 ; i ++ ) { for ( j = 0 ; j < 16 ; j ++ , k ++ ) { unsigned int pval = accumulator [ k ] + ( count [ k ] >> 1 ) ; pval *= fixed_divide [ count [ k ] ] ; pval >>= 19 ; dst1 [ byte ] = ( uint8_t ) pval ; byte ++ ; } byte += stride - 16 ; } dst1 = cpi -> alt_ref_buffer . u_buffer ; dst2 = cpi -> alt_ref_buffer . v_buffer ; stride = cpi -> alt_ref_buffer . uv_stride ; byte = mb_uv_offset ; for ( i = 0 , k = 256 ; i < mb_uv_height ; i ++ ) { for ( j = 0 ; j < mb_uv_width ; j ++ , k ++ ) { int m = k + 256 ; unsigned int pval = accumulator [ k ] + ( count [ k ] >> 1 ) ; pval *= fixed_divide [ count [ k ] ] ; pval >>= 19 ; dst1 [ byte ] = ( uint8_t ) pval ; pval = accumulator [ m ] + ( count [ m ] >> 1 ) ; pval *= fixed_divide [ count [ m ] ] ; pval >>= 19 ; dst2 [ byte ] = ( uint8_t ) pval ; byte ++ ; } byte += stride - mb_uv_width ; } } # else dst1 = cpi -> alt_ref_buffer . y_buffer ; stride = cpi -> alt_ref_buffer . y_stride ; byte = mb_y_offset ; for ( i = 0 , k = 0 ; i < 16 ; i ++ ) { for ( j = 0 ; j < 16 ; j ++ , k ++ ) { unsigned int pval = accumulator [ k ] + ( count [ k ] >> 1 ) ; pval *= fixed_divide [ count [ k ] ] ; pval >>= 19 ; dst1 [ byte ] = ( uint8_t ) pval ; byte ++ ; } byte += stride - 16 ; } dst1 = cpi -> alt_ref_buffer . u_buffer ; dst2 = cpi -> alt_ref_buffer . v_buffer ; stride = cpi -> alt_ref_buffer . uv_stride ; byte = mb_uv_offset ; for ( i = 0 , k = 256 ; i < mb_uv_height ; i ++ ) { for ( j = 0 ; j < mb_uv_width ; j ++ , k ++ ) { int m = k + 256 ; unsigned int pval = accumulator [ k ] + ( count [ k ] >> 1 ) ; pval *= fixed_divide [ count [ k ] ] ; pval >>= 19 ; dst1 [ byte ] = ( uint8_t ) pval ; pval = accumulator [ m ] + ( count [ m ] >> 1 ) ; pval *= fixed_divide [ count [ m ] ] ; pval >>= 19 ; dst2 [ byte ] = ( uint8_t ) pval ; byte ++ ; } byte += stride - mb_uv_width ; } # endif <S2SV_ModEnd> mb_y_offset += 16 <S2SV_ModStart> mb_y_offset += 16 ; mb_uv_offset += mb_uv_width ; } mb_y_offset += 16 * ( f -> y_stride - mb_cols ) <S2SV_ModStart> mb_uv_offset += mb_uv_height * <S2SV_ModEnd> f -> uv_stride <S2SV_ModStart> -> uv_stride - mb_uv_width * mb_cols <S2SV_ModEnd> ; } for\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16790\n\n```\nCWE-125 static bool _bson_iter_next_internal ( bson_iter_t * iter , uint32_t next_keylen , const char * * key , uint32_t * bson_type , bool * unsupported ) { const uint8_t * data ; uint32_t o ; unsigned int len ; BSON_ASSERT ( iter ) ; * unsupported = false ; if ( ! iter -> raw ) { * key = NULL ; * bson_type = BSON_TYPE_EOD ; return false ; } data = iter -> raw ; len = iter -> len ; iter -> off = iter -> next_off ; iter -> type = iter -> off ; iter -> key = iter -> off + 1 ; iter -> d1 = 0 ; iter -> d2 = 0 ; iter -> d3 = 0 ; iter -> d4 = 0 ; if ( next_keylen == 0 ) { for ( o = iter -> key ; o < len ; o ++ ) { if ( ! data [ o ] ) { iter -> d1 = ++ o ; goto fill_data_fields ; } } } else { o = iter -> key + next_keylen + 1 ; iter -> d1 = o ; goto fill_data_fields ; } goto mark_invalid ; fill_data_fields : * key = bson_iter_key_unsafe ( iter ) ; * bson_type = ITER_TYPE ( iter ) ; switch ( * bson_type ) { case BSON_TYPE_DATE_TIME : case BSON_TYPE_DOUBLE : case BSON_TYPE_INT64 : case BSON_TYPE_TIMESTAMP : iter -> next_off = o + 8 ; break ; case BSON_TYPE_CODE : case BSON_TYPE_SYMBOL : case BSON_TYPE_UTF8 : { uint32_t l ; if ( ( o + 4 ) >= len ) { iter -> err_off = o ; goto mark_invalid ; } iter -> d2 = o + 4 ; memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( l > ( len - ( o + 4 ) ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> next_off = o + 4 + l ; if ( BSON_UNLIKELY ( ( l == 0 ) || ( iter -> next_off >= len ) ) ) { iter -> err_off = o ; goto mark_invalid ; } if ( BSON_UNLIKELY ( ( iter -> raw + iter -> d2 ) [ l - 1 ] != '\\\\0' ) ) { iter -> err_off = o + 4 + l - 1 ; goto mark_invalid ; } } break ; case BSON_TYPE_BINARY : { bson_subtype_t subtype ; uint32_t l ; if ( o >= ( len - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> d2 = o + 4 ; iter -> d3 = o + 5 ; memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; <S2SV_StartBug> if ( l >= ( len - o ) ) { <S2SV_EndBug> iter -> err_off = o ; goto mark_invalid ; } subtype = * ( iter -> raw + iter -> d2 ) ; if ( subtype == BSON_SUBTYPE_BINARY_DEPRECATED ) { int32_t binary_len ; if ( l < 4 ) { iter -> err_off = o ; goto mark_invalid ; } memcpy ( & binary_len , ( iter -> raw + iter -> d3 ) , sizeof ( binary_len ) ) ; binary_len = BSON_UINT32_FROM_LE ( binary_len ) ; if ( binary_len + 4 != l ) { iter -> err_off = iter -> d3 ; goto mark_invalid ; } } iter -> next_off = o + 5 + l ; } break ; case BSON_TYPE_ARRAY : case BSON_TYPE_DOCUMENT : { uint32_t l ; if ( o >= ( len - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( ( l > len ) || ( l > ( len - o ) ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> next_off = o + l ; } break ; case BSON_TYPE_OID : iter -> next_off = o + 12 ; break ; case BSON_TYPE_BOOL : { char val ; if ( iter -> d1 >= len ) { iter -> err_off = o ; goto mark_invalid ; } memcpy ( & val , iter -> raw + iter -> d1 , 1 ) ; if ( val != 0x00 && val != 0x01 ) { iter -> err_off = o ; goto mark_invalid ; } iter -> next_off = o + 1 ; } break ; case BSON_TYPE_REGEX : { bool eor = false ; bool eoo = false ; for ( ; o < len ; o ++ ) { if ( ! data [ o ] ) { iter -> d2 = ++ o ; eor = true ; break ; } } if ( ! eor ) { iter -> err_off = iter -> next_off ; goto mark_invalid ; } for ( ; o < len ; o ++ ) { if ( ! data [ o ] ) { eoo = true ; break ; } } if ( ! eoo ) { iter -> err_off = iter -> next_off ; goto mark_invalid ; } iter -> next_off = o + 1 ; } break ; case BSON_TYPE_DBPOINTER : { uint32_t l ; if ( o >= ( len - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> d2 = o + 4 ; memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( l == 0 || l > ( len - o - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } if ( * ( iter -> raw + o + l + 3 ) ) { iter -> err_off = o + l + 3 ; goto mark_invalid ; } iter -> d3 = o + 4 + l ; iter -> next_off = o + 4 + l + 12 ; } break ; case BSON_TYPE_CODEWSCOPE : { uint32_t l ; uint32_t doclen ; if ( ( len < 19 ) || ( o >= ( len - 14 ) ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> d2 = o + 4 ; iter -> d3 = o + 8 ; memcpy ( & l , iter -> raw + iter -> d1 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( ( l < 14 ) || ( l >= ( len - o ) ) ) { iter -> err_off = o ; goto mark_invalid ; } iter -> next_off = o + l ; if ( iter -> next_off >= len ) { iter -> err_off = o ; goto mark_invalid ; } memcpy ( & l , iter -> raw + iter -> d2 , sizeof ( l ) ) ; l = BSON_UINT32_FROM_LE ( l ) ; if ( l == 0 || l >= ( len - o - 4 - 4 ) ) { iter -> err_off = o ; goto mark_invalid ; } if ( ( o + 4 + 4 + l + 4 ) >= iter -> next_off ) { iter -> err_off = o + 4 ; goto mark_invalid ; } iter -> d4 = o + 4 + 4 + l ; memcpy ( & doclen , iter -> raw + iter -> d4 , sizeof ( doclen ) ) ; doclen = BSON_UINT32_FROM_LE ( doclen ) ; if ( ( o + 4 + 4 + l + doclen ) != iter -> next_off ) { iter -> err_off = o + 4 + 4 + l ; goto mark_invalid ; } } break ; case BSON_TYPE_INT32 : iter -> next_off = o + 4 ; break ; case BSON_TYPE_DECIMAL128 : iter -> next_off = o + 16 ; break ; case BSON_TYPE_MAXKEY : case BSON_TYPE_MINKEY : case BSON_TYPE_NULL : case BSON_TYPE_UNDEFINED : iter -> next_off = o ; break ; default : * unsupported = true ; case BSON_TYPE_EOD : iter -> err_off = o ; goto mark_invalid ; } if ( iter -> next_off >= len ) { iter -> err_off = o ; goto mark_invalid ; } iter -> err_off = 0 ; return true ; mark_invalid : iter -> raw = NULL ; iter -> len = 0 ; iter -> next_off = 0 ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len - o - 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19063\n\n```\nCWE-401 int rtl_usb_probe ( struct usb_interface * intf , const struct usb_device_id * id , struct rtl_hal_cfg * rtl_hal_cfg ) { int err ; struct ieee80211_hw * hw = NULL ; struct rtl_priv * rtlpriv = NULL ; struct usb_device * udev ; struct rtl_usb_priv * usb_priv ; hw = ieee80211_alloc_hw ( sizeof ( struct rtl_priv ) + sizeof ( struct rtl_usb_priv ) , & rtl_ops ) ; if ( ! hw ) { WARN_ONCE ( true , \"rtl_usb:<S2SV_blank>ieee80211<S2SV_blank>alloc<S2SV_blank>failed\\\\n\" ) ; return - ENOMEM ; } rtlpriv = hw -> priv ; rtlpriv -> hw = hw ; rtlpriv -> usb_data = kcalloc ( RTL_USB_MAX_RX_COUNT , sizeof ( u32 ) , GFP_KERNEL ) ; <S2SV_StartBug> if ( ! rtlpriv -> usb_data ) <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> spin_lock_init ( & rtlpriv -> locks . usb_lock ) ; <S2SV_EndBug> INIT_WORK ( & rtlpriv -> works . fill_h2c_cmd , rtl_fill_h2c_cmd_work_callback ) ; INIT_WORK ( & rtlpriv -> works . lps_change_work , rtl_lps_change_work_callback ) ; rtlpriv -> usb_data_index = 0 ; init_completion ( & rtlpriv -> firmware_loading_complete ) ; SET_IEEE80211_DEV ( hw , & intf -> dev ) ; udev = interface_to_usbdev ( intf ) ; usb_get_dev ( udev ) ; usb_priv = rtl_usbpriv ( hw ) ; memset ( usb_priv , 0 , sizeof ( * usb_priv ) ) ; usb_priv -> dev . intf = intf ; usb_priv -> dev . udev = udev ; usb_set_intfdata ( intf , hw ) ; rtlpriv -> rtlhal . interface = INTF_USB ; rtlpriv -> cfg = rtl_hal_cfg ; rtlpriv -> intf_ops = & rtl_usb_ops ; _rtl_usb_io_handler_init ( & udev -> dev , hw ) ; rtlpriv -> cfg -> ops -> read_chip_version ( hw ) ; rtlpriv -> cfg -> ops -> read_eeprom_info ( hw ) ; err = _rtl_usb_init ( hw ) ; if ( err ) goto error_out2 ; rtl_usb_init_sw ( hw ) ; err = rtl_init_core ( hw ) ; if ( err ) { pr_err ( \"Can\\'t<S2SV_blank>allocate<S2SV_blank>sw<S2SV_blank>for<S2SV_blank>mac80211\\\\n\" ) ; goto error_out2 ; } if ( rtlpriv -> cfg -> ops -> init_sw_vars ( hw ) ) { pr_err ( \"Can\\'t<S2SV_blank>init_sw_vars\\\\n\" ) ; goto error_out ; } rtlpriv -> cfg -> ops -> init_sw_leds ( hw ) ; err = ieee80211_register_hw ( hw ) ; if ( err ) { pr_err ( \"Can\\'t<S2SV_blank>register<S2SV_blank>mac80211<S2SV_blank>hw.\\\\n\" ) ; err = - ENODEV ; goto error_out ; } rtlpriv -> mac80211 . mac80211_registered = 1 ; set_bit ( RTL_STATUS_INTERFACE_START , & rtlpriv -> status ) ; return 0 ; error_out : rtl_deinit_core ( hw ) ; error_out2 : _rtl_usb_io_handler_release ( hw ) ; usb_put_dev ( udev ) ; <S2SV_StartBug> complete ( & rtlpriv -> firmware_loading_complete ) ; <S2SV_EndBug> return - ENODEV ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> usb_data ) { ieee80211_free_hw ( hw ) ; <S2SV_ModStart> - ENOMEM ; } <S2SV_ModStart> rtlpriv -> firmware_loading_complete ) ; kfree ( rtlpriv -> usb_data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> int ntlm_read_message_fields_buffer ( wStream * s , NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( fields -> Len > 0 ) { <S2SV_StartBug> if ( ( fields -> BufferOffset + fields -> Len ) > Stream_Length ( s ) ) <S2SV_EndBug> return - 1 ; fields -> Buffer = ( PBYTE ) malloc ( fields -> Len ) ; if ( ! fields -> Buffer ) return - 1 ; Stream_SetPosition ( s , fields -> BufferOffset ) ; Stream_Read ( s , fields -> Buffer , fields -> Len ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> 0 ) { const UINT64 offset = ( UINT64 ) <S2SV_ModEnd> fields -> BufferOffset <S2SV_ModStart> -> BufferOffset + ( UINT64 ) <S2SV_ModStart> fields -> Len ; if ( offset <S2SV_ModEnd> > Stream_Length (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 static void vrrp_tfile_end_handler ( void ) { vrrp_tracked_file_t * tfile = LIST_TAIL_DATA ( vrrp_data -> vrrp_track_files ) ; struct stat statb ; FILE * tf ; int ret ; if ( ! tfile -> file_path ) { report_config_error ( CONFIG_GENERAL_ERROR , \"No<S2SV_blank>file<S2SV_blank>set<S2SV_blank>for<S2SV_blank>track_file<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>removing\" , tfile -> fname ) ; free_list_element ( vrrp_data -> vrrp_track_files , vrrp_data -> vrrp_track_files -> tail ) ; return ; } if ( track_file_init == TRACK_FILE_NO_INIT ) return ; ret = stat ( tfile -> file_path , & statb ) ; if ( ! ret ) { if ( track_file_init == TRACK_FILE_CREATE ) { return ; } if ( ( statb . st_mode & S_IFMT ) != S_IFREG ) { report_config_error ( CONFIG_GENERAL_ERROR , \"Cannot<S2SV_blank>initialise<S2SV_blank>track<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>it<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>regular<S2SV_blank>file\" , tfile -> fname ) ; return ; } if ( reload ) return ; } if ( ! __test_bit ( CONFIG_TEST_BIT , & debug ) ) { <S2SV_StartBug> if ( ( tf = fopen ( tfile -> file_path , \"w\" ) ) ) { <S2SV_EndBug> fprintf ( tf , \"%d\\\\n\" , track_file_init_value ) ; fclose ( tf ) ; } else report_config_error ( CONFIG_GENERAL_ERROR , \"Unable<S2SV_blank>to<S2SV_blank>initialise<S2SV_blank>track<S2SV_blank>file<S2SV_blank>%s\" , tfile -> fname ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( tf = fopen_safe <S2SV_ModEnd> ( tfile ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-252(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0599\n\n```\nCWE-252 IHEVCD_ERROR_T ihevcd_parse_slice_header ( codec_t * ps_codec , nal_header_t * ps_nal ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; WORD32 value ; WORD32 i ; WORD32 sps_id ; pps_t * ps_pps ; sps_t * ps_sps ; slice_header_t * ps_slice_hdr ; WORD32 disable_deblocking_filter_flag ; bitstrm_t * ps_bitstrm = & ps_codec -> s_parse . s_bitstrm ; WORD32 idr_pic_flag ; WORD32 pps_id ; WORD32 first_slice_in_pic_flag ; WORD32 no_output_of_prior_pics_flag = 0 ; WORD8 i1_nal_unit_type = ps_nal -> i1_nal_unit_type ; WORD32 num_poc_total_curr = 0 ; WORD32 slice_address ; if ( ps_codec -> i4_slice_error == 1 ) return ret ; idr_pic_flag = ( NAL_IDR_W_LP == i1_nal_unit_type ) || ( NAL_IDR_N_LP == i1_nal_unit_type ) ; BITS_PARSE ( \"first_slice_in_pic_flag\" , first_slice_in_pic_flag , ps_bitstrm , 1 ) ; if ( ( NAL_BLA_W_LP <= i1_nal_unit_type ) && ( NAL_RSV_RAP_VCL23 >= i1_nal_unit_type ) ) { BITS_PARSE ( \"no_output_of_prior_pics_flag\" , no_output_of_prior_pics_flag , ps_bitstrm , 1 ) ; } UEV_PARSE ( \"pic_parameter_set_id\" , pps_id , ps_bitstrm ) ; pps_id = CLIP3 ( pps_id , 0 , MAX_PPS_CNT - 2 ) ; ps_pps = ps_codec -> s_parse . ps_pps_base + pps_id ; if ( 0 == ps_pps -> i1_pps_valid ) { pps_t * ps_pps_ref = ps_codec -> ps_pps_base ; while ( 0 == ps_pps_ref -> i1_pps_valid ) ps_pps_ref ++ ; if ( ( ps_pps_ref - ps_codec -> ps_pps_base >= MAX_PPS_CNT - 1 ) ) return IHEVCD_INVALID_HEADER ; ihevcd_copy_pps ( ps_codec , pps_id , ps_pps_ref -> i1_pps_id ) ; } sps_id = ps_pps -> i1_sps_id ; ps_sps = ps_codec -> s_parse . ps_sps_base + sps_id ; if ( ( 0 != ps_codec -> u4_pic_cnt || ps_codec -> i4_pic_present ) && first_slice_in_pic_flag ) { if ( ps_codec -> i4_pic_present ) { slice_header_t * ps_slice_hdr_next ; ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = 0 ; ps_slice_hdr_next -> i2_ctb_y = ps_codec -> s_parse . ps_sps -> i2_pic_ht_in_ctb ; return ret ; } else { ps_codec -> i4_slice_error = 0 ; } } if ( first_slice_in_pic_flag ) { ps_codec -> s_parse . i4_cur_slice_idx = 0 ; } else { if ( 0 == ps_codec -> i4_pic_present ) ps_codec -> s_parse . i4_cur_slice_idx = 1 ; } ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr_base + ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ; if ( ( ps_pps -> i1_dependent_slice_enabled_flag ) && ( ! first_slice_in_pic_flag ) ) { BITS_PARSE ( \"dependent_slice_flag\" , value , ps_bitstrm , 1 ) ; if ( value && ( ps_codec -> s_parse . i4_cur_slice_idx > 0 ) ) { ihevcd_copy_slice_hdr ( ps_codec , ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) , ( ( ps_codec -> s_parse . i4_cur_slice_idx - 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ) ; } ps_slice_hdr -> i1_dependent_slice_flag = value ; } else { ps_slice_hdr -> i1_dependent_slice_flag = 0 ; } ps_slice_hdr -> i1_nal_unit_type = i1_nal_unit_type ; ps_slice_hdr -> i1_pps_id = pps_id ; ps_slice_hdr -> i1_first_slice_in_pic_flag = first_slice_in_pic_flag ; ps_slice_hdr -> i1_no_output_of_prior_pics_flag = 1 ; if ( ( NAL_BLA_W_LP <= i1_nal_unit_type ) && ( NAL_RSV_RAP_VCL23 >= i1_nal_unit_type ) ) { ps_slice_hdr -> i1_no_output_of_prior_pics_flag = no_output_of_prior_pics_flag ; } ps_slice_hdr -> i1_pps_id = pps_id ; if ( ! ps_slice_hdr -> i1_first_slice_in_pic_flag ) { WORD32 num_bits ; num_bits = 32 - CLZ ( ps_sps -> i4_pic_size_in_ctb - 1 ) ; BITS_PARSE ( \"slice_address\" , value , ps_bitstrm , num_bits ) ; slice_address = value ; if ( value >= ps_sps -> i4_pic_size_in_ctb ) return IHEVCD_IGNORE_SLICE ; } else { slice_address = 0 ; } if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_slice_hdr -> i1_pic_output_flag = 1 ; ps_slice_hdr -> i4_pic_order_cnt_lsb = 0 ; ps_slice_hdr -> i1_num_long_term_sps = 0 ; ps_slice_hdr -> i1_num_long_term_pics = 0 ; for ( i = 0 ; i < ps_pps -> i1_num_extra_slice_header_bits ; i ++ ) { BITS_PARSE ( \"slice_reserved_undetermined_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; } UEV_PARSE ( \"slice_type\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_type = value ; if ( ( ps_slice_hdr -> i1_nal_unit_type >= NAL_BLA_W_LP ) && ( ps_slice_hdr -> i1_nal_unit_type <= NAL_RSV_RAP_VCL23 ) ) ps_slice_hdr -> i1_slice_type = ISLICE ; if ( ( ps_slice_hdr -> i1_slice_type < 0 ) || ( ps_slice_hdr -> i1_slice_type > 2 ) ) return IHEVCD_IGNORE_SLICE ; if ( ps_pps -> i1_output_flag_present_flag ) { BITS_PARSE ( \"pic_output_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_pic_output_flag = value ; } ps_slice_hdr -> i1_colour_plane_id = 0 ; if ( 1 == ps_sps -> i1_separate_colour_plane_flag ) { BITS_PARSE ( \"colour_plane_id\" , value , ps_bitstrm , 2 ) ; ps_slice_hdr -> i1_colour_plane_id = value ; } ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag = 0 ; if ( ! idr_pic_flag ) { WORD32 st_rps_idx ; WORD32 num_neg_pics ; WORD32 num_pos_pics ; WORD8 * pi1_used ; BITS_PARSE ( \"pic_order_cnt_lsb\" , value , ps_bitstrm , ps_sps -> i1_log2_max_pic_order_cnt_lsb ) ; ps_slice_hdr -> i4_pic_order_cnt_lsb = value ; BITS_PARSE ( \"short_term_ref_pic_set_sps_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_short_term_ref_pic_set_sps_flag = value ; if ( 1 == ps_slice_hdr -> i1_short_term_ref_pic_set_sps_flag ) { WORD32 numbits ; ps_slice_hdr -> i1_short_term_ref_pic_set_idx = 0 ; if ( ps_sps -> i1_num_short_term_ref_pic_sets > 1 ) { numbits = 32 - CLZ ( ps_sps -> i1_num_short_term_ref_pic_sets - 1 ) ; BITS_PARSE ( \"short_term_ref_pic_set_idx\" , value , ps_bitstrm , numbits ) ; ps_slice_hdr -> i1_short_term_ref_pic_set_idx = value ; } st_rps_idx = ps_slice_hdr -> i1_short_term_ref_pic_set_idx ; num_neg_pics = ps_sps -> as_stref_picset [ st_rps_idx ] . i1_num_neg_pics ; num_pos_pics = ps_sps -> as_stref_picset [ st_rps_idx ] . i1_num_pos_pics ; pi1_used = ps_sps -> as_stref_picset [ st_rps_idx ] . ai1_used ; } else { ihevcd_short_term_ref_pic_set ( ps_bitstrm , & ps_sps -> as_stref_picset [ 0 ] , ps_sps -> i1_num_short_term_ref_pic_sets , ps_sps -> i1_num_short_term_ref_pic_sets , & ps_slice_hdr -> s_stref_picset ) ; st_rps_idx = ps_sps -> i1_num_short_term_ref_pic_sets ; num_neg_pics = ps_slice_hdr -> s_stref_picset . i1_num_neg_pics ; num_pos_pics = ps_slice_hdr -> s_stref_picset . i1_num_pos_pics ; pi1_used = ps_slice_hdr -> s_stref_picset . ai1_used ; } if ( ps_sps -> i1_long_term_ref_pics_present_flag ) { if ( ps_sps -> i1_num_long_term_ref_pics_sps > 0 ) { UEV_PARSE ( \"num_long_term_sps\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_long_term_sps = value ; ps_slice_hdr -> i1_num_long_term_sps = CLIP3 ( ps_slice_hdr -> i1_num_long_term_sps , 0 , MAX_DPB_SIZE - num_neg_pics - num_pos_pics ) ; } UEV_PARSE ( \"num_long_term_pics\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_long_term_pics = value ; ps_slice_hdr -> i1_num_long_term_pics = CLIP3 ( ps_slice_hdr -> i1_num_long_term_pics , 0 , MAX_DPB_SIZE - num_neg_pics - num_pos_pics - ps_slice_hdr -> i1_num_long_term_sps ) ; for ( i = 0 ; i < ( ps_slice_hdr -> i1_num_long_term_sps + ps_slice_hdr -> i1_num_long_term_pics ) ; i ++ ) { if ( i < ps_slice_hdr -> i1_num_long_term_sps ) { WORD32 num_bits = 32 - CLZ ( ps_sps -> i1_num_long_term_ref_pics_sps ) ; BITS_PARSE ( \"lt_idx_sps[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , num_bits ) ; ps_slice_hdr -> ai4_poc_lsb_lt [ i ] = ps_sps -> ai1_lt_ref_pic_poc_lsb_sps [ value ] ; ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] = ps_sps -> ai1_used_by_curr_pic_lt_sps_flag [ value ] ; } else { BITS_PARSE ( \"poc_lsb_lt[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , ps_sps -> i1_log2_max_pic_order_cnt_lsb ) ; ps_slice_hdr -> ai4_poc_lsb_lt [ i ] = value ; BITS_PARSE ( \"used_by_curr_pic_lt_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] = value ; } BITS_PARSE ( \"delta_poc_msb_present_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> ai1_delta_poc_msb_present_flag [ i ] = value ; ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] = 0 ; if ( ps_slice_hdr -> ai1_delta_poc_msb_present_flag [ i ] ) { UEV_PARSE ( \"delata_poc_msb_cycle_lt[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm ) ; ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] = value ; } if ( ( i != 0 ) && ( i != ps_slice_hdr -> i1_num_long_term_sps ) ) { ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] += ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i - 1 ] ; } } } for ( i = 0 ; i < num_neg_pics + num_pos_pics ; i ++ ) { if ( pi1_used [ i ] ) { num_poc_total_curr ++ ; } } for ( i = 0 ; i < ps_slice_hdr -> i1_num_long_term_sps + ps_slice_hdr -> i1_num_long_term_pics ; i ++ ) { if ( ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] ) { num_poc_total_curr ++ ; } } if ( ps_sps -> i1_sps_temporal_mvp_enable_flag ) { BITS_PARSE ( \"enable_temporal_mvp_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag = value ; } } ps_slice_hdr -> i1_slice_sao_luma_flag = 0 ; ps_slice_hdr -> i1_slice_sao_chroma_flag = 0 ; if ( ps_sps -> i1_sample_adaptive_offset_enabled_flag ) { BITS_PARSE ( \"slice_sao_luma_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_sao_luma_flag = value ; BITS_PARSE ( \"slice_sao_chroma_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_sao_chroma_flag = value ; } ps_slice_hdr -> i1_max_num_merge_cand = 1 ; ps_slice_hdr -> i1_cabac_init_flag = 0 ; ps_slice_hdr -> i1_num_ref_idx_l0_active = 0 ; ps_slice_hdr -> i1_num_ref_idx_l1_active = 0 ; ps_slice_hdr -> i1_slice_cb_qp_offset = 0 ; ps_slice_hdr -> i1_slice_cr_qp_offset = 0 ; if ( ( PSLICE == ps_slice_hdr -> i1_slice_type ) || ( BSLICE == ps_slice_hdr -> i1_slice_type ) ) { BITS_PARSE ( \"num_ref_idx_active_override_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_num_ref_idx_active_override_flag = value ; if ( ps_slice_hdr -> i1_num_ref_idx_active_override_flag ) { UEV_PARSE ( \"num_ref_idx_l0_active_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_ref_idx_l0_active = value + 1 ; if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { UEV_PARSE ( \"num_ref_idx_l1_active_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_ref_idx_l1_active = value + 1 ; } } else { ps_slice_hdr -> i1_num_ref_idx_l0_active = ps_pps -> i1_num_ref_idx_l0_default_active ; if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { ps_slice_hdr -> i1_num_ref_idx_l1_active = ps_pps -> i1_num_ref_idx_l1_default_active ; } } ps_slice_hdr -> i1_num_ref_idx_l0_active = CLIP3 ( ps_slice_hdr -> i1_num_ref_idx_l0_active , 0 , MAX_DPB_SIZE - 1 ) ; ps_slice_hdr -> i1_num_ref_idx_l1_active = CLIP3 ( ps_slice_hdr -> i1_num_ref_idx_l1_active , 0 , MAX_DPB_SIZE - 1 ) ; if ( 0 == num_poc_total_curr ) return IHEVCD_IGNORE_SLICE ; if ( ( ps_pps -> i1_lists_modification_present_flag ) && ( num_poc_total_curr > 1 ) ) { ihevcd_ref_pic_list_modification ( ps_bitstrm , ps_slice_hdr , num_poc_total_curr ) ; } else { ps_slice_hdr -> s_rplm . i1_ref_pic_list_modification_flag_l0 = 0 ; ps_slice_hdr -> s_rplm . i1_ref_pic_list_modification_flag_l1 = 0 ; } if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { BITS_PARSE ( \"mvd_l1_zero_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_mvd_l1_zero_flag = value ; } ps_slice_hdr -> i1_cabac_init_flag = 0 ; if ( ps_pps -> i1_cabac_init_present_flag ) { BITS_PARSE ( \"cabac_init_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_cabac_init_flag = value ; } ps_slice_hdr -> i1_collocated_from_l0_flag = 1 ; ps_slice_hdr -> i1_collocated_ref_idx = 0 ; if ( ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag ) { if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { BITS_PARSE ( \"collocated_from_l0_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_collocated_from_l0_flag = value ; } if ( ( ps_slice_hdr -> i1_collocated_from_l0_flag && ( ps_slice_hdr -> i1_num_ref_idx_l0_active > 1 ) ) || ( ! ps_slice_hdr -> i1_collocated_from_l0_flag && ( ps_slice_hdr -> i1_num_ref_idx_l1_active > 1 ) ) ) { UEV_PARSE ( \"collocated_ref_idx\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_collocated_ref_idx = value ; } } ps_slice_hdr -> i1_collocated_ref_idx = CLIP3 ( ps_slice_hdr -> i1_collocated_ref_idx , 0 , MAX_DPB_SIZE - 1 ) ; if ( ( ps_pps -> i1_weighted_pred_flag && ( PSLICE == ps_slice_hdr -> i1_slice_type ) ) || ( ps_pps -> i1_weighted_bipred_flag && ( BSLICE == ps_slice_hdr -> i1_slice_type ) ) ) { ihevcd_parse_pred_wt_ofst ( ps_bitstrm , ps_sps , ps_pps , ps_slice_hdr ) ; } UEV_PARSE ( \"five_minus_max_num_merge_cand\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_max_num_merge_cand = 5 - value ; } ps_slice_hdr -> i1_max_num_merge_cand = CLIP3 ( ps_slice_hdr -> i1_max_num_merge_cand , 1 , 5 ) ; SEV_PARSE ( \"slice_qp_delta\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_qp_delta = value ; if ( ps_pps -> i1_pic_slice_level_chroma_qp_offsets_present_flag ) { SEV_PARSE ( \"slice_cb_qp_offset\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_cb_qp_offset = value ; SEV_PARSE ( \"slice_cr_qp_offset\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_cr_qp_offset = value ; } ps_slice_hdr -> i1_deblocking_filter_override_flag = 0 ; ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag = ps_pps -> i1_pic_disable_deblocking_filter_flag ; ps_slice_hdr -> i1_beta_offset_div2 = ps_pps -> i1_beta_offset_div2 ; ps_slice_hdr -> i1_tc_offset_div2 = ps_pps -> i1_tc_offset_div2 ; disable_deblocking_filter_flag = ps_pps -> i1_pic_disable_deblocking_filter_flag ; if ( ps_pps -> i1_deblocking_filter_control_present_flag ) { if ( ps_pps -> i1_deblocking_filter_override_enabled_flag ) { BITS_PARSE ( \"deblocking_filter_override_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_deblocking_filter_override_flag = value ; } if ( ps_slice_hdr -> i1_deblocking_filter_override_flag ) { BITS_PARSE ( \"slice_disable_deblocking_filter_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag = value ; disable_deblocking_filter_flag = ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ; if ( ! ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ) { SEV_PARSE ( \"beta_offset_div2\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_beta_offset_div2 = value ; SEV_PARSE ( \"tc_offset_div2\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_tc_offset_div2 = value ; } } } ps_slice_hdr -> i1_slice_loop_filter_across_slices_enabled_flag = ps_pps -> i1_loop_filter_across_slices_enabled_flag ; if ( ps_pps -> i1_loop_filter_across_slices_enabled_flag && ( ps_slice_hdr -> i1_slice_sao_luma_flag || ps_slice_hdr -> i1_slice_sao_chroma_flag || ! disable_deblocking_filter_flag ) ) { BITS_PARSE ( \"slice_loop_filter_across_slices_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_loop_filter_across_slices_enabled_flag = value ; } } if ( ( ! first_slice_in_pic_flag ) && ( ps_codec -> i4_pic_present ) ) { slice_header_t * ps_slice_hdr_base = ps_codec -> ps_slice_hdr_base ; if ( ( ps_slice_hdr_base -> i1_pps_id != ps_slice_hdr -> i1_pps_id ) || ( ps_slice_hdr_base -> i4_pic_order_cnt_lsb != ps_slice_hdr -> i4_pic_order_cnt_lsb ) ) { return IHEVCD_IGNORE_SLICE ; } } if ( 0 == ps_codec -> i4_pic_present ) { ps_slice_hdr -> i4_abs_pic_order_cnt = ihevcd_calc_poc ( ps_codec , ps_nal , ps_sps -> i1_log2_max_pic_order_cnt_lsb , ps_slice_hdr -> i4_pic_order_cnt_lsb ) ; } else { ps_slice_hdr -> i4_abs_pic_order_cnt = ps_codec -> s_parse . i4_abs_pic_order_cnt ; } if ( ! first_slice_in_pic_flag ) { if ( ps_codec -> s_parse . i4_abs_pic_order_cnt == ps_slice_hdr -> i4_abs_pic_order_cnt ) { if ( slice_address > ps_codec -> s_parse . i4_next_ctb_indx ) { if ( ps_codec -> i4_pic_present ) { ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; return ret ; } else { return IHEVCD_IGNORE_SLICE ; } } else if ( slice_address < ps_codec -> s_parse . i4_next_ctb_indx ) { return IHEVCD_IGNORE_SLICE ; } else { ps_codec -> i4_slice_error = 0 ; } } else { if ( ps_codec -> i4_pic_present ) { slice_header_t * ps_slice_hdr_next ; ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = 0 ; ps_slice_hdr_next -> i2_ctb_y = ps_codec -> s_parse . ps_sps -> i2_pic_ht_in_ctb ; return ret ; } else { if ( ps_slice_hdr -> i1_dependent_slice_flag ) return IHEVCD_IGNORE_SLICE ; ps_codec -> s_parse . i4_abs_pic_order_cnt = ps_slice_hdr -> i4_abs_pic_order_cnt ; } } } else { if ( ps_codec -> s_parse . i4_abs_pic_order_cnt == ps_slice_hdr -> i4_abs_pic_order_cnt ) return IHEVCD_IGNORE_SLICE ; ps_codec -> s_parse . i4_abs_pic_order_cnt = ps_slice_hdr -> i4_abs_pic_order_cnt ; } ps_slice_hdr -> i4_num_entry_point_offsets = 0 ; if ( ( ps_pps -> i1_tiles_enabled_flag ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag ) ) { UEV_PARSE ( \"num_entry_point_offsets\" , value , ps_bitstrm ) ; ps_slice_hdr -> i4_num_entry_point_offsets = value ; { WORD32 max_num_entry_point_offsets ; if ( ( ps_pps -> i1_tiles_enabled_flag ) && ( ps_pps -> i1_entropy_coding_sync_enabled_flag ) ) { max_num_entry_point_offsets = ps_pps -> i1_num_tile_columns * ( ps_sps -> i2_pic_ht_in_ctb - 1 ) ; } else if ( ps_pps -> i1_tiles_enabled_flag ) { max_num_entry_point_offsets = ps_pps -> i1_num_tile_columns * ps_pps -> i1_num_tile_rows ; } else { max_num_entry_point_offsets = ( ps_sps -> i2_pic_ht_in_ctb - 1 ) ; } ps_slice_hdr -> i4_num_entry_point_offsets = CLIP3 ( ps_slice_hdr -> i4_num_entry_point_offsets , 0 , max_num_entry_point_offsets ) ; } if ( ps_slice_hdr -> i4_num_entry_point_offsets > 0 ) { UEV_PARSE ( \"offset_len_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_offset_len = value + 1 ; for ( i = 0 ; i < ps_slice_hdr -> i4_num_entry_point_offsets ; i ++ ) { BITS_PARSE ( \"entry_point_offset\" , value , ps_bitstrm , ps_slice_hdr -> i1_offset_len ) ; } } } if ( ps_pps -> i1_slice_header_extension_present_flag ) { UEV_PARSE ( \"slice_header_extension_length\" , value , ps_bitstrm ) ; ps_slice_hdr -> i2_slice_header_extension_length = value ; for ( i = 0 ; i < ps_slice_hdr -> i2_slice_header_extension_length ; i ++ ) { BITS_PARSE ( \"slice_header_extension_data_byte\" , value , ps_bitstrm , 8 ) ; } } ihevcd_bits_flush_to_byte_boundary ( ps_bitstrm ) ; { dpb_mgr_t * ps_dpb_mgr = ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr ; WORD32 r_idx ; if ( ( NAL_IDR_W_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_IDR_N_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_N_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_W_DLP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_W_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( 0 == ps_codec -> u4_pic_cnt ) ) { for ( i = 0 ; i < MAX_DPB_BUFS ; i ++ ) { if ( ps_dpb_mgr -> as_dpb_info [ i ] . ps_pic_buf ) { pic_buf_t * ps_pic_buf = ps_dpb_mgr -> as_dpb_info [ i ] . ps_pic_buf ; mv_buf_t * ps_mv_buf ; ihevc_dpb_mgr_del_ref ( ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr , ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_pic_buf -> i4_abs_poc ) ; ps_mv_buf = ( mv_buf_t * ) ps_codec -> ps_mv_buf ; for ( i = 0 ; i < BUF_MGR_MAX_CNT ; i ++ ) { if ( ps_mv_buf && ps_mv_buf -> i4_abs_poc == ps_pic_buf -> i4_abs_poc ) { ihevc_buf_mgr_release ( ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr , i , BUF_MGR_REF ) ; break ; } ps_mv_buf ++ ; } } } for ( r_idx = 0 ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = NULL ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = NULL ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = NULL ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = NULL ; } } else { <S2SV_StartBug> ihevcd_ref_list ( ps_codec , ps_pps , ps_sps , ps_slice_hdr ) ; <S2SV_EndBug> } } if ( ps_codec -> i4_pic_present ) { pic_buf_t * ps_pic_buf_ref ; mv_buf_t * ps_mv_buf_ref ; WORD32 r_idx ; dpb_mgr_t * ps_dpb_mgr = ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr ; buf_mgr_t * ps_mv_buf_mgr = ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr ; ps_pic_buf_ref = ihevc_dpb_mgr_get_ref_by_nearest_poc ( ps_dpb_mgr , ps_slice_hdr -> i4_abs_pic_order_cnt ) ; if ( NULL == ps_pic_buf_ref ) { ps_pic_buf_ref = ps_codec -> as_process [ 0 ] . ps_cur_pic ; ps_mv_buf_ref = ps_codec -> s_parse . ps_cur_mv_buf ; } else { ps_mv_buf_ref = ihevcd_mv_mgr_get_poc ( ps_mv_buf_mgr , ps_pic_buf_ref -> i4_abs_poc ) ; } for ( r_idx = 0 ; r_idx < ps_slice_hdr -> i1_num_ref_idx_l0_active ; r_idx ++ ) { if ( NULL == ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } for ( r_idx = ps_slice_hdr -> i1_num_ref_idx_l0_active ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } for ( r_idx = 0 ; r_idx < ps_slice_hdr -> i1_num_ref_idx_l1_active ; r_idx ++ ) { if ( NULL == ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf ) { ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } for ( r_idx = ps_slice_hdr -> i1_num_ref_idx_l1_active ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } if ( ! ps_slice_hdr -> i1_first_slice_in_pic_flag ) { ps_slice_hdr -> i2_ctb_x = slice_address % ps_sps -> i2_pic_wd_in_ctb ; ps_slice_hdr -> i2_ctb_y = slice_address / ps_sps -> i2_pic_wd_in_ctb ; if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_slice_hdr -> i2_independent_ctb_x = ps_slice_hdr -> i2_ctb_x ; ps_slice_hdr -> i2_independent_ctb_y = ps_slice_hdr -> i2_ctb_y ; } } else { ps_slice_hdr -> i2_ctb_x = 0 ; ps_slice_hdr -> i2_ctb_y = 0 ; ps_slice_hdr -> i2_independent_ctb_x = 0 ; ps_slice_hdr -> i2_independent_ctb_y = 0 ; } if ( ( ! first_slice_in_pic_flag ) && ( 0 == ps_codec -> i4_pic_present ) ) { slice_header_t * ps_slice_hdr_prev = ps_codec -> s_parse . ps_slice_hdr_base ; ihevcd_copy_slice_hdr ( ps_codec , 0 , ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ) ; ps_codec -> i4_slice_error = 1 ; ps_slice_hdr_prev -> i2_ctb_x = 0 ; ps_slice_hdr_prev -> i2_ctb_y = 0 ; ps_codec -> s_parse . i4_ctb_x = 0 ; ps_codec -> s_parse . i4_ctb_y = 0 ; ps_codec -> s_parse . i4_cur_slice_idx = 0 ; if ( ( ps_slice_hdr -> i2_ctb_x == 0 ) && ( ps_slice_hdr -> i2_ctb_y == 0 ) ) { ps_slice_hdr -> i2_ctb_x ++ ; } } { if ( ( i1_nal_unit_type < NAL_BLA_W_LP ) && ( i1_nal_unit_type % 2 == 0 ) ) { if ( IVD_SKIP_B == ps_codec -> e_pic_skip_mode ) return IHEVCD_IGNORE_SLICE ; } if ( ( IVD_SKIP_PB == ps_codec -> e_pic_skip_mode ) && ( ISLICE != ps_slice_hdr -> i1_slice_type ) ) { return IHEVCD_IGNORE_SLICE ; } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { ret = <S2SV_ModStart> ps_slice_hdr ) ; if ( ( WORD32 ) IHEVCD_SUCCESS != ret ) { return ret ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2220\n\n```\nCWE-119 int <S2SV_StartBug> rad_get_vendor_attr ( u_int32_t * vendor , const void * * data , size_t * len ) <S2SV_EndBug> { struct vendor_attribute * attr ; <S2SV_StartBug> attr = ( struct vendor_attribute * ) * data ; <S2SV_EndBug> <S2SV_StartBug> * vendor = ntohl ( attr -> vendor_value ) ; <S2SV_EndBug> * data = attr -> attrib_data ; * len = attr -> attrib_len - 2 ; <S2SV_StartBug> return ( attr -> attrib_type ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_int32_t * vendor , unsigned char * type <S2SV_ModStart> size_t * len , const void * raw , size_t raw_len <S2SV_ModStart> * attr ; if ( raw_len < sizeof ( struct vendor_attribute ) ) { return - 1 ; } <S2SV_ModStart> vendor_attribute * ) raw <S2SV_ModEnd> ; * vendor <S2SV_ModStart> -> vendor_value ) ; * type = attr -> attrib_type <S2SV_ModStart> - 2 ; if ( ( attr -> attrib_len + 4 ) > raw_len ) { return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static int process_plane ( uint8 * in , int width , int height , uint8 * out , int size ) { UNUSED ( size ) ; int indexw ; int indexh ; int code ; int collen ; int replen ; int color ; int x ; int revcode ; uint8 * last_line ; uint8 * this_line ; uint8 * org_in ; uint8 * org_out ; org_in = in ; org_out = out ; last_line = 0 ; indexh = 0 ; while ( indexh < height ) { out = ( org_out + width * height * 4 ) - ( ( indexh + 1 ) * width * 4 ) ; color = 0 ; this_line = out ; indexw = 0 ; if ( last_line == 0 ) { while ( indexw < width ) { code = CVAL ( in ) ; replen = code & 0xf ; collen = ( code >> 4 ) & 0xf ; revcode = ( replen << 4 ) | collen ; if ( ( revcode <= 47 ) && ( revcode >= 16 ) ) { replen = revcode ; collen = 0 ; } <S2SV_StartBug> while ( collen > 0 ) <S2SV_EndBug> { color = CVAL ( in ) ; * out = color ; out += 4 ; indexw ++ ; collen -- ; } <S2SV_StartBug> while ( replen > 0 ) <S2SV_EndBug> { * out = color ; out += 4 ; indexw ++ ; replen -- ; } } } else { while ( indexw < width ) { code = CVAL ( in ) ; replen = code & 0xf ; collen = ( code >> 4 ) & 0xf ; revcode = ( replen << 4 ) | collen ; if ( ( revcode <= 47 ) && ( revcode >= 16 ) ) { replen = revcode ; collen = 0 ; } <S2SV_StartBug> while ( collen > 0 ) <S2SV_EndBug> { x = CVAL ( in ) ; if ( x & 1 ) { x = x >> 1 ; x = x + 1 ; color = - x ; } else { x = x >> 1 ; color = x ; } x = last_line [ indexw * 4 ] + color ; * out = x ; out += 4 ; indexw ++ ; collen -- ; } <S2SV_StartBug> while ( replen > 0 ) <S2SV_EndBug> { x = last_line [ indexw * 4 ] + color ; * out = x ; out += 4 ; indexw ++ ; replen -- ; } } } indexh ++ ; last_line = this_line ; } return ( int ) ( in - org_in ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } while ( indexw < width && <S2SV_ModStart> } while ( indexw < width && <S2SV_ModStart> } while ( indexw < width && <S2SV_ModStart> } while ( indexw < width &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14283\n\n```\nCWE-125 static int set_geometry ( unsigned int cmd , struct floppy_struct * g , int drive , int type , struct block_device * bdev ) { int cnt ; <S2SV_StartBug> if ( g -> sect <= 0 || <S2SV_EndBug> <S2SV_StartBug> g -> head <= 0 || <S2SV_EndBug> ( unsigned char ) ( ( g -> sect << 2 ) >> FD_SIZECODE ( g ) ) == 0 || g -> track <= 0 || g -> track > UDP -> tracks >> STRETCH ( g ) || ( g -> stretch & ~ ( FD_STRETCH | FD_SWAPSIDES | FD_SECTBASEMASK ) ) != 0 ) return - EINVAL ; if ( type ) { if ( ! capable ( CAP_SYS_ADMIN ) ) return - EPERM ; mutex_lock ( & open_lock ) ; if ( lock_fdc ( drive ) ) { mutex_unlock ( & open_lock ) ; return - EINTR ; } floppy_type [ type ] = * g ; floppy_type [ type ] . name = \"user<S2SV_blank>format\" ; for ( cnt = type << 2 ; cnt < ( type << 2 ) + 4 ; cnt ++ ) floppy_sizes [ cnt ] = floppy_sizes [ cnt + 0x80 ] = floppy_type [ type ] . size + 1 ; process_fd_request ( ) ; for ( cnt = 0 ; cnt < N_DRIVE ; cnt ++ ) { struct block_device * bdev = opened_bdev [ cnt ] ; if ( ! bdev || ITYPE ( drive_state [ cnt ] . fd_device ) != type ) continue ; __invalidate_device ( bdev , true ) ; } mutex_unlock ( & open_lock ) ; } else { int oldStretch ; if ( lock_fdc ( drive ) ) return - EINTR ; if ( cmd != FDDEFPRM ) { if ( poll_drive ( true , FD_RAW_NEED_DISK ) == - EINTR ) return - EINTR ; } oldStretch = g -> stretch ; user_params [ drive ] = * g ; if ( buffer_drive == drive ) SUPBOUND ( buffer_max , user_params [ drive ] . sect ) ; current_type [ drive ] = & user_params [ drive ] ; floppy_sizes [ drive ] = user_params [ drive ] . size ; if ( cmd == FDDEFPRM ) DRS -> keep_data = - 1 ; else DRS -> keep_data = 1 ; if ( DRS -> maxblock > user_params [ drive ] . sect || DRS -> maxtrack || ( ( user_params [ drive ] . sect ^ oldStretch ) & ( FD_SWAPSIDES | FD_SECTBASEMASK ) ) ) invalidate_drive ( bdev ) ; else process_fd_request ( ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( int ) <S2SV_ModStart> <= 0 || ( int ) <S2SV_ModStart> g -> head <= 0 || ( int ) ( g -> sect * g -> head )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16276\n\n```\nCWE-20 static ssize_t yurex_read ( struct file * file , char __user * buffer , size_t count , loff_t * ppos ) { struct usb_yurex * dev ; <S2SV_StartBug> int retval = 0 ; <S2SV_EndBug> int bytes_read = 0 ; char in_buffer [ 20 ] ; unsigned long flags ; dev = file -> private_data ; mutex_lock ( & dev -> io_mutex ) ; if ( ! dev -> interface ) { <S2SV_StartBug> retval = - ENODEV ; <S2SV_EndBug> goto exit ; } spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_StartBug> bytes_read = snprintf ( in_buffer , 20 , \"%lld\\\\n\" , dev -> bbu ) ; <S2SV_EndBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_StartBug> if ( * ppos < bytes_read ) { <S2SV_EndBug> if ( copy_to_user ( buffer , in_buffer + * ppos , bytes_read - * ppos ) ) retval = - EFAULT ; else { retval = bytes_read - * ppos ; * ppos += bytes_read ; } } exit : mutex_unlock ( & dev -> io_mutex ) ; <S2SV_StartBug> return retval ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ; int len <S2SV_ModEnd> = 0 ; <S2SV_ModStart> interface ) { mutex_unlock ( & dev -> io_mutex ) ; return - ENODEV <S2SV_ModEnd> ; } spin_lock_irqsave <S2SV_ModStart> flags ) ; len <S2SV_ModEnd> = snprintf ( <S2SV_ModStart> flags ) ; <S2SV_ModEnd> mutex_unlock ( & <S2SV_ModStart> ) ; return simple_read_from_buffer ( buffer , count , ppos , in_buffer , len ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10146\n\n```\nCWE-399 static Image * ReadLABELImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char geometry [ MaxTextExtent ] , * property ; const char * label ; DrawInfo * draw_info ; Image * image ; MagickBooleanType status ; TypeMetric metrics ; size_t height , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; ( void ) ResetImagePage ( image , \"0x0+0+0\" ) ; property = InterpretImageProperties ( image_info , image , image_info -> filename ) ; ( void ) SetImageProperty ( image , \"label\" , property ) ; property = DestroyString ( property ) ; label = GetImageProperty ( image , \"label\" ) ; draw_info = CloneDrawInfo ( image_info , ( DrawInfo * ) NULL ) ; draw_info -> text = ConstantString ( label ) ; metrics . width = 0 ; metrics . ascent = 0.0 ; status = GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; if ( ( image -> columns == 0 ) && ( image -> rows == 0 ) ) { image -> columns = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; image -> rows = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; } else if ( ( strlen ( label ) > 0 ) && ( ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) || ( fabs ( image_info -> pointsize ) < MagickEpsilon ) ) ) { double high , low ; for ( ; ; draw_info -> pointsize *= 2.0 ) { ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; ( void ) GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; height = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; if ( ( image -> columns != 0 ) && ( image -> rows != 0 ) ) { if ( ( width >= image -> columns ) && ( height >= image -> rows ) ) break ; } else if ( ( ( image -> columns != 0 ) && ( width >= image -> columns ) ) || ( ( image -> rows != 0 ) && ( height >= image -> rows ) ) ) break ; } high = draw_info -> pointsize ; for ( low = 1.0 ; ( high - low ) > 0.5 ; ) { draw_info -> pointsize = ( low + high ) / 2.0 ; ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , - metrics . bounds . x1 , metrics . ascent ) ; if ( draw_info -> gravity == UndefinedGravity ) ( void ) CloneString ( & draw_info -> geometry , geometry ) ; ( void ) GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; width = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; height = ( size_t ) floor ( metrics . height + draw_info -> stroke_width + 0.5 ) ; if ( ( image -> columns != 0 ) && ( image -> rows != 0 ) ) { if ( ( width < image -> columns ) && ( height < image -> rows ) ) low = draw_info -> pointsize + 0.5 ; else high = draw_info -> pointsize - 0.5 ; } else if ( ( ( image -> columns != 0 ) && ( width < image -> columns ) ) || ( ( image -> rows != 0 ) && ( height < image -> rows ) ) ) low = draw_info -> pointsize + 0.5 ; else high = draw_info -> pointsize - 0.5 ; } draw_info -> pointsize = ( low + high ) / 2.0 - 0.5 ; } status = GetMultilineTypeMetrics ( image , draw_info , & metrics ) ; if ( status == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; InheritException ( exception , & image -> exception ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( image -> columns == 0 ) image -> columns = ( size_t ) floor ( metrics . width + draw_info -> stroke_width + 0.5 ) ; if ( image -> columns == 0 ) image -> columns = ( size_t ) floor ( draw_info -> pointsize + draw_info -> stroke_width + 0.5 ) ; if ( image -> rows == 0 ) image -> rows = ( size_t ) floor ( metrics . ascent - metrics . descent + draw_info -> stroke_width + 0.5 ) ; if ( image -> rows == 0 ) image -> rows = ( size_t ) floor ( draw_info -> pointsize + draw_info -> stroke_width + 0.5 ) ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( SetImageBackgroundColor ( image ) == MagickFalse ) { draw_info = DestroyDrawInfo ( draw_info ) ; InheritException ( exception , & image -> exception ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%+g%+g\" , draw_info -> direction == RightToLeftDirection ? image -> columns - metrics . bounds . x2 : 0.0 , draw_info -> gravity == UndefinedGravity ? metrics . ascent : 0.0 ) ; <S2SV_StartBug> draw_info -> geometry = AcquireString ( geometry ) ; <S2SV_EndBug> status = AnnotateImage ( image , draw_info ) ; if ( image_info -> pointsize == 0.0 ) { char pointsize [ MaxTextExtent ] ; ( void ) FormatLocaleString ( pointsize , MaxTextExtent , \"%.20g\" , draw_info -> pointsize ) ; ( void ) SetImageProperty ( image , \"label:pointsize\" , pointsize ) ; } draw_info = DestroyDrawInfo ( draw_info ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0.0 ) ; ( void ) CloneString ( & <S2SV_ModStart> draw_info -> geometry , <S2SV_ModEnd> geometry ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 int llc_print ( netdissect_options * ndo , const u_char * p , u_int length , u_int caplen , const struct lladdr_info * src , const struct lladdr_info * dst ) { uint8_t dsap_field , dsap , ssap_field , ssap ; uint16_t control ; int hdrlen ; int is_u ; if ( caplen < 3 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( caplen ) ; } if ( length < 3 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( length ) ; } dsap_field = * p ; ssap_field = * ( p + 1 ) ; control = * ( p + 2 ) ; if ( ( control & LLC_U_FMT ) == LLC_U_FMT ) { is_u = 1 ; hdrlen = 3 ; } else { if ( caplen < 4 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( caplen ) ; } if ( length < 4 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( length ) ; } control = EXTRACT_LE_16BITS ( p + 2 ) ; is_u = 0 ; hdrlen = 4 ; } if ( ssap_field == LLCSAP_GLOBAL && dsap_field == LLCSAP_GLOBAL ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"IPX<S2SV_blank>802.3:<S2SV_blank>\" ) ) ; ipx_print ( ndo , p , length ) ; return ( 0 ) ; } dsap = dsap_field & ~ LLC_IG ; ssap = ssap_field & ~ LLC_GSAP ; if ( ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"LLC,<S2SV_blank>dsap<S2SV_blank>%s<S2SV_blank>(0x%02x)<S2SV_blank>%s,<S2SV_blank>ssap<S2SV_blank>%s<S2SV_blank>(0x%02x)<S2SV_blank>%s\" , tok2str ( llc_values , \"Unknown\" , dsap ) , dsap , tok2str ( llc_ig_flag_values , \"Unknown\" , dsap_field & LLC_IG ) , tok2str ( llc_values , \"Unknown\" , ssap ) , ssap , tok2str ( llc_flag_values , \"Unknown\" , ssap_field & LLC_GSAP ) ) ) ; if ( is_u ) { ND_PRINT ( ( ndo , \",<S2SV_blank>ctrl<S2SV_blank>0x%02x:<S2SV_blank>\" , control ) ) ; } else { ND_PRINT ( ( ndo , \",<S2SV_blank>ctrl<S2SV_blank>0x%04x:<S2SV_blank>\" , control ) ) ; } } p += hdrlen ; length -= hdrlen ; caplen -= hdrlen ; if ( ssap == LLCSAP_SNAP && dsap == LLCSAP_SNAP && control == LLC_UI ) { if ( ! snap_print ( ndo , p , length , caplen , src , dst , 2 ) ) { return ( - ( hdrlen + 5 ) ) ; } else return ( hdrlen + 5 ) ; } if ( ssap == LLCSAP_8021D && dsap == LLCSAP_8021D && control == LLC_UI ) { stp_print ( ndo , p , length ) ; return ( hdrlen ) ; } if ( ssap == LLCSAP_IP && dsap == LLCSAP_IP && control == LLC_UI ) { ip_print ( ndo , p , length ) ; return ( hdrlen ) ; } if ( ssap == LLCSAP_IPX && dsap == LLCSAP_IPX && control == LLC_UI ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"IPX<S2SV_blank>802.2:<S2SV_blank>\" ) ) ; ipx_print ( ndo , p , length ) ; return ( hdrlen ) ; } # ifdef ENABLE_SMB if ( ssap == LLCSAP_NETBEUI && dsap == LLCSAP_NETBEUI && ( ! ( control & LLC_S_FMT ) || control == LLC_U_FMT ) ) { netbeui_print ( ndo , control , p , length ) ; return ( hdrlen ) ; } # endif if ( ssap == LLCSAP_ISONS && dsap == LLCSAP_ISONS && control == LLC_UI ) { <S2SV_StartBug> isoclns_print ( ndo , p , length , caplen ) ; <S2SV_EndBug> return ( hdrlen ) ; } if ( ! ndo -> ndo_eflag ) { if ( ssap == dsap ) { if ( src == NULL || dst == NULL ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , tok2str ( llc_values , \"Unknown<S2SV_blank>DSAP<S2SV_blank>0x%02x\" , dsap ) ) ) ; else ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>\" , ( src -> addr_string ) ( ndo , src -> addr ) , ( dst -> addr_string ) ( ndo , dst -> addr ) , tok2str ( llc_values , \"Unknown<S2SV_blank>DSAP<S2SV_blank>0x%02x\" , dsap ) ) ) ; } else { if ( src == NULL || dst == NULL ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s<S2SV_blank>\" , tok2str ( llc_values , \"Unknown<S2SV_blank>SSAP<S2SV_blank>0x%02x\" , ssap ) , tok2str ( llc_values , \"Unknown<S2SV_blank>DSAP<S2SV_blank>0x%02x\" , dsap ) ) ) ; else ND_PRINT ( ( ndo , \"%s<S2SV_blank>%s<S2SV_blank>><S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>\" , ( src -> addr_string ) ( ndo , src -> addr ) , tok2str ( llc_values , \"Unknown<S2SV_blank>SSAP<S2SV_blank>0x%02x\" , ssap ) , ( dst -> addr_string ) ( ndo , dst -> addr ) , tok2str ( llc_values , \"Unknown<S2SV_blank>DSAP<S2SV_blank>0x%02x\" , dsap ) ) ) ; } } if ( is_u ) { ND_PRINT ( ( ndo , \"Unnumbered,<S2SV_blank>%s,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( llc_cmd_values , \"%02x\" , LLC_U_CMD ( control ) ) , tok2str ( llc_flag_values , \"?\" , ( ssap_field & LLC_GSAP ) | ( control & LLC_U_POLL ) ) , length + hdrlen ) ) ; if ( ( control & ~ LLC_U_POLL ) == LLC_XID ) { if ( length == 0 ) { return ( hdrlen ) ; } if ( caplen < 1 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; if ( caplen > 0 ) ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; return ( hdrlen ) ; } if ( * p == LLC_XID_FI ) { if ( caplen < 3 || length < 3 ) { ND_PRINT ( ( ndo , \"[|llc]\" ) ) ; if ( caplen > 0 ) ND_DEFAULTPRINT ( ( const u_char * ) p , caplen ) ; } else ND_PRINT ( ( ndo , \":<S2SV_blank>%02x<S2SV_blank>%02x\" , p [ 1 ] , p [ 2 ] ) ) ; return ( hdrlen ) ; } } } else { if ( ( control & LLC_S_FMT ) == LLC_S_FMT ) { ND_PRINT ( ( ndo , \"Supervisory,<S2SV_blank>%s,<S2SV_blank>rcv<S2SV_blank>seq<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( llc_supervisory_values , \"?\" , LLC_S_CMD ( control ) ) , LLC_IS_NR ( control ) , tok2str ( llc_flag_values , \"?\" , ( ssap_field & LLC_GSAP ) | ( control & LLC_IS_POLL ) ) , length + hdrlen ) ) ; return ( hdrlen ) ; } else { ND_PRINT ( ( ndo , \"Information,<S2SV_blank>send<S2SV_blank>seq<S2SV_blank>%u,<S2SV_blank>rcv<S2SV_blank>seq<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>length<S2SV_blank>%u\" , LLC_I_NS ( control ) , LLC_IS_NR ( control ) , tok2str ( llc_flag_values , \"?\" , ( ssap_field & LLC_GSAP ) | ( control & LLC_IS_POLL ) ) , length + hdrlen ) ) ; } } return ( - hdrlen ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p , length <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2546\n\n```\nCWE-362 static int snd_timer_user_tselect ( struct file * file , struct snd_timer_select __user * _tselect ) { struct snd_timer_user * tu ; struct snd_timer_select tselect ; char str [ 32 ] ; int err = 0 ; tu = file -> private_data ; <S2SV_StartBug> mutex_lock ( & tu -> tread_sem ) ; <S2SV_EndBug> if ( tu -> timeri ) { snd_timer_close ( tu -> timeri ) ; tu -> timeri = NULL ; } if ( copy_from_user ( & tselect , _tselect , sizeof ( tselect ) ) ) { err = - EFAULT ; goto __err ; } sprintf ( str , \"application<S2SV_blank>%i\" , current -> pid ) ; if ( tselect . id . dev_class != SNDRV_TIMER_CLASS_SLAVE ) tselect . id . dev_sclass = SNDRV_TIMER_SCLASS_APPLICATION ; err = snd_timer_open ( & tu -> timeri , str , & tselect . id , current -> pid ) ; if ( err < 0 ) goto __err ; kfree ( tu -> queue ) ; tu -> queue = NULL ; kfree ( tu -> tqueue ) ; tu -> tqueue = NULL ; if ( tu -> tread ) { tu -> tqueue = kmalloc ( tu -> queue_size * sizeof ( struct snd_timer_tread ) , GFP_KERNEL ) ; if ( tu -> tqueue == NULL ) err = - ENOMEM ; } else { tu -> queue = kmalloc ( tu -> queue_size * sizeof ( struct snd_timer_read ) , GFP_KERNEL ) ; if ( tu -> queue == NULL ) err = - ENOMEM ; } if ( err < 0 ) { snd_timer_close ( tu -> timeri ) ; tu -> timeri = NULL ; } else { tu -> timeri -> flags |= SNDRV_TIMER_IFLG_FAST ; tu -> timeri -> callback = tu -> tread ? snd_timer_user_tinterrupt : snd_timer_user_interrupt ; tu -> timeri -> ccallback = snd_timer_user_ccallback ; tu -> timeri -> callback_data = ( void * ) tu ; } __err : <S2SV_StartBug> mutex_unlock ( & tu -> tread_sem ) ; <S2SV_EndBug> return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private_data ; <S2SV_ModEnd> if ( tu <S2SV_ModStart> } __err : <S2SV_ModEnd> return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_init_layer_context ( VP9_COMP * const cpi ) { SVC * const svc = & cpi -> svc ; <S2SV_StartBug> const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> <S2SV_StartBug> int layer ; <S2SV_EndBug> int layer_end ; svc -> spatial_layer_id = 0 ; svc -> temporal_layer_id = 0 ; <S2SV_StartBug> if ( svc -> number_temporal_layers > 1 ) { <S2SV_EndBug> layer_end = svc -> number_temporal_layers ; } else { layer_end = svc -> number_spatial_layers ; } for ( layer = 0 ; layer < layer_end ; ++ layer ) { <S2SV_StartBug> LAYER_CONTEXT * const lc = & svc -> layer_context [ layer ] ; <S2SV_EndBug> RATE_CONTROL * const lrc = & lc -> rc ; lc -> current_video_frame_in_layer = 0 ; lrc -> avg_frame_qindex [ INTER_FRAME ] = oxcf -> worst_allowed_q ; lrc -> ni_av_qi = oxcf -> worst_allowed_q ; lrc -> total_actual_bits = 0 ; lrc -> total_target_vs_actual = 0 ; lrc -> ni_tot_qi = 0 ; lrc -> tot_q = 0.0 ; lrc -> avg_q = 0.0 ; lrc -> ni_frames = 0 ; lrc -> decimation_count = 0 ; lrc -> decimation_factor = 0 ; lrc -> rate_correction_factor = 1.0 ; lrc -> key_frame_rate_correction_factor = 1.0 ; if ( svc -> number_temporal_layers > 1 ) { lc -> target_bandwidth = oxcf -> ts_target_bitrate [ layer ] * 1000 ; lrc -> last_q [ INTER_FRAME ] = oxcf -> worst_allowed_q ; } else { lc -> target_bandwidth = oxcf -> ss_target_bitrate [ layer ] * 1000 ; lrc -> last_q [ 0 ] = oxcf -> best_allowed_q ; lrc -> last_q [ 1 ] = oxcf -> best_allowed_q ; lrc -> last_q [ 2 ] = oxcf -> best_allowed_q ; } lrc -> buffer_level = vp9_rescale ( ( int ) ( oxcf -> starting_buffer_level ) , lc -> target_bandwidth , 1000 ) ; lrc -> bits_off_target = lrc -> buffer_level ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svc ; const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> oxcf ; int sl , tl ; int alt_ref_idx = svc -> number_spatial_layers ; svc -> spatial_layer_id = 0 ; svc -> temporal_layer_id = 0 ; if ( cpi -> oxcf . error_resilient_mode == 0 && cpi -> oxcf . pass == 2 ) { if ( vpx_realloc_frame_buffer ( & cpi -> svc . empty_frame . img , SMALL_FRAME_WIDTH , SMALL_FRAME_HEIGHT , cpi -> common . subsampling_x , cpi -> common . subsampling_y , # if CONFIG_VP9_HIGHBITDEPTH cpi -> common . use_highbitdepth , # endif VP9_ENC_BORDER_IN_PIXELS , cpi -> common . byte_alignment , NULL , NULL , NULL ) ) vpx_internal_error ( & cpi -> common . error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>empty<S2SV_blank>frame<S2SV_blank>for<S2SV_blank>multiple<S2SV_blank>frame<S2SV_blank>\" \"contexts\" ) ; memset ( cpi -> svc . empty_frame . img . buffer_alloc , 0x80 , cpi -> svc . empty_frame . img . buffer_alloc_sz ) ; } for ( sl = 0 ; sl < oxcf -> ss_number_layers ; ++ sl ) { for ( tl = 0 ; tl < oxcf -> ts_number_layers ; ++ tl ) { int layer = LAYER_IDS_TO_IDX ( sl , tl , oxcf -> ts_number_layers ) ; LAYER_CONTEXT * const lc = & svc -> layer_context [ layer ] ; RATE_CONTROL * const lrc = & lc -> rc ; int i ; lc -> current_video_frame_in_layer = 0 ; lc -> layer_size = 0 ; lc -> frames_from_key_frame = 0 ; lc -> last_frame_type = FRAME_TYPES ; lrc -> ni_av_qi = oxcf -> worst_allowed_q ; lrc -> total_actual_bits = 0 ; lrc -> total_target_vs_actual = 0 ; lrc -> ni_tot_qi = 0 ; lrc -> tot_q = 0.0 ; lrc -> avg_q = 0.0 ; lrc -> ni_frames = 0 ; lrc -> decimation_count = 0 ; lrc -> decimation_factor = 0 ; for ( i = 0 ; i < RATE_FACTOR_LEVELS ; ++ i ) { lrc -> rate_correction_factors [ i ] = 1.0 ; } if ( cpi -> oxcf . rc_mode == VPX_CBR ) { lc -> target_bandwidth = oxcf -> layer_target_bitrate [ layer ] ; lrc -> last_q [ INTER_FRAME ] = oxcf -> worst_allowed_q ; lrc -> avg_frame_qindex [ INTER_FRAME ] = oxcf -> worst_allowed_q ; lrc -> avg_frame_qindex [ KEY_FRAME ] = oxcf -> worst_allowed_q ; } else { lc -> target_bandwidth = oxcf -> layer_target_bitrate [ layer ] ; lrc -> last_q [ KEY_FRAME ] = oxcf -> best_allowed_q ; lrc -> last_q [ INTER_FRAME ] = oxcf -> best_allowed_q ; lrc -> avg_frame_qindex [ KEY_FRAME ] = ( oxcf -> worst_allowed_q + oxcf -> best_allowed_q ) / 2 ; lrc -> avg_frame_qindex [ INTER_FRAME ] = ( oxcf -> worst_allowed_q + oxcf -> best_allowed_q ) / 2 ; if ( oxcf -> ss_enable_auto_arf [ sl ] ) lc -> alt_ref_idx = alt_ref_idx ++ ; else lc -> alt_ref_idx = INVALID_IDX ; lc -> gold_ref_idx = INVALID_IDX ; } lrc -> buffer_level = oxcf -> starting_buffer_level_ms * lc -> target_bandwidth / 1000 ; lrc -> bits_off_target = lrc -> buffer_level ; } } if ( ! <S2SV_ModEnd> ( svc -> <S2SV_ModStart> number_temporal_layers > 1 && cpi -> oxcf . rc_mode == VPX_CBR ) && alt_ref_idx < REF_FRAMES ) <S2SV_ModEnd> svc -> layer_context <S2SV_ModStart> -> layer_context [ 0 ] . gold_ref_idx = alt_ref_idx ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1416\n\n```\nCWE-119 static krb5_int32 prep_reprocess_req ( krb5_kdc_req * request , krb5_principal * krbtgt_princ ) { krb5_error_code retval = KRB5KRB_AP_ERR_BADMATCH ; char * * realms , * * cpp , * temp_buf = NULL ; krb5_data * comp1 = NULL , * comp2 = NULL ; char * comp1_str = NULL ; if ( isflagset ( request -> kdc_options , KDC_OPT_CANONICALIZE ) && ! isflagset ( request -> kdc_options , KDC_OPT_ENC_TKT_IN_SKEY ) && krb5_princ_size ( kdc_context , request -> server ) == 2 ) { comp1 = krb5_princ_component ( kdc_context , request -> server , 0 ) ; comp2 = krb5_princ_component ( kdc_context , request -> server , 1 ) ; comp1_str = calloc ( 1 , comp1 -> length + 1 ) ; if ( ! comp1_str ) { retval = ENOMEM ; goto cleanup ; } <S2SV_StartBug> strlcpy ( comp1_str , comp1 -> data , comp1 -> length + 1 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( krb5_princ_type ( kdc_context , request -> server ) == KRB5_NT_SRV_HST || <S2SV_EndBug> krb5_princ_type ( kdc_context , request -> server ) == KRB5_NT_SRV_INST || ( krb5_princ_type ( kdc_context , request -> server ) == KRB5_NT_UNKNOWN && kdc_active_realm -> realm_host_based_services != NULL && ( krb5_match_config_pattern ( kdc_active_realm -> realm_host_based_services , comp1_str ) == TRUE || krb5_match_config_pattern ( kdc_active_realm -> realm_host_based_services , KRB5_CONF_ASTERISK ) == TRUE ) ) ) && ( kdc_active_realm -> realm_no_host_referral == NULL || ( krb5_match_config_pattern ( kdc_active_realm -> realm_no_host_referral , KRB5_CONF_ASTERISK ) == FALSE && krb5_match_config_pattern ( kdc_active_realm -> realm_no_host_referral , comp1_str ) == FALSE ) ) ) { if ( memchr ( comp2 -> data , '.' , comp2 -> length ) == NULL ) goto cleanup ; temp_buf = calloc ( 1 , comp2 -> length + 1 ) ; if ( ! temp_buf ) { retval = ENOMEM ; goto cleanup ; } <S2SV_StartBug> strlcpy ( temp_buf , comp2 -> data , comp2 -> length + 1 ) ; <S2SV_EndBug> retval = krb5int_get_domain_realm_mapping ( kdc_context , temp_buf , & realms ) ; free ( temp_buf ) ; if ( retval ) { kdc_err ( kdc_context , retval , \"unable<S2SV_blank>to<S2SV_blank>find<S2SV_blank>realm<S2SV_blank>of<S2SV_blank>host\" ) ; goto cleanup ; } if ( realms == 0 ) { retval = KRB5KRB_AP_ERR_BADMATCH ; goto cleanup ; } if ( realms [ 0 ] == 0 || data_eq_string ( request -> server -> realm , realms [ 0 ] ) ) { free ( realms [ 0 ] ) ; free ( realms ) ; retval = KRB5KRB_AP_ERR_BADMATCH ; goto cleanup ; } retval = krb5_build_principal ( kdc_context , krbtgt_princ , ( * request -> server ) . realm . length , ( * request -> server ) . realm . data , \"krbtgt\" , realms [ 0 ] , ( char * ) 0 ) ; for ( cpp = realms ; * cpp ; cpp ++ ) free ( * cpp ) ; } } cleanup : free ( comp1_str ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cleanup ; } if ( <S2SV_ModEnd> comp1 -> data <S2SV_ModStart> comp1 -> data != NULL ) memcpy ( comp1_str , comp1 -> data , comp1 -> length ) ; if ( ( krb5_princ_type ( kdc_context , request -> server ) == KRB5_NT_SRV_HST || krb5_princ_type ( kdc_context , request -> server ) == KRB5_NT_SRV_INST || ( krb5_princ_type ( kdc_context , request -> server ) == KRB5_NT_UNKNOWN && kdc_active_realm -> realm_host_based_services != NULL && ( krb5_match_config_pattern ( kdc_active_realm -> realm_host_based_services , comp1_str ) == TRUE || krb5_match_config_pattern ( kdc_active_realm -> realm_host_based_services , KRB5_CONF_ASTERISK ) == TRUE ) ) ) && ( kdc_active_realm -> realm_no_host_referral == NULL || ( krb5_match_config_pattern ( kdc_active_realm -> realm_no_host_referral , KRB5_CONF_ASTERISK ) == FALSE && krb5_match_config_pattern ( kdc_active_realm -> realm_no_host_referral , comp1_str ) == FALSE ) ) ) { if ( memchr ( comp2 -> data , '.' , comp2 -> length ) == NULL ) goto cleanup ; temp_buf = calloc ( 1 , comp2 <S2SV_ModEnd> -> length + <S2SV_ModStart> ; if ( <S2SV_ModEnd> ! temp_buf ) <S2SV_ModStart> cleanup ; } if ( comp2 -> data != NULL ) memcpy <S2SV_ModEnd> ( temp_buf , <S2SV_ModStart> comp2 -> length <S2SV_ModEnd> ) ; retval\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19815\n\n```\nCWE-476 static int f2fs_read_data_page ( struct file * file , struct page * page ) { <S2SV_StartBug> struct inode * inode = page -> mapping -> host ; <S2SV_EndBug> int ret = - EAGAIN ; trace_f2fs_readpage ( page , DATA ) ; if ( f2fs_has_inline_data ( inode ) ) ret = f2fs_read_inline_data ( inode , page ) ; if ( ret == - EAGAIN ) <S2SV_StartBug> ret = f2fs_mpage_readpages ( page -> mapping , NULL , page , 1 , false ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * inode = page_file_mapping ( page ) <S2SV_ModEnd> -> host ; <S2SV_ModStart> = f2fs_mpage_readpages ( page_file_mapping ( page ) <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5691\n\n```\nCWE-20 static Image * ReadDCMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char explicit_vr [ MagickPathExtent ] , implicit_vr [ MagickPathExtent ] , magick [ MagickPathExtent ] , photometric [ MagickPathExtent ] ; DCMStreamInfo * stream_info ; Image * image ; int * bluemap , datum , * greenmap , * graymap , index , * redmap ; MagickBooleanType explicit_file , explicit_retry , polarity , sequence , use_explicit ; MagickOffsetType offset ; Quantum * scale ; register ssize_t i , x ; register Quantum * q ; register unsigned char * p ; size_t bits_allocated , bytes_per_pixel , colors , depth , height , length , mask , max_value , number_scenes , quantum , samples_per_pixel , signed_data , significant_bits , status , width , window_width ; ssize_t count , rescale_intercept , rescale_slope , scene , window_center , y ; unsigned char * data ; unsigned short group , element ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 8UL ; image -> endian = LSBEndian ; stream_info = ( DCMStreamInfo * ) AcquireMagickMemory ( sizeof ( * stream_info ) ) ; if ( stream_info == ( DCMStreamInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( stream_info , 0 , sizeof ( * stream_info ) ) ; count = ReadBlob ( image , 128 , ( unsigned char * ) magick ) ; if ( count != 128 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) magick ) ; if ( ( count != 4 ) || ( LocaleNCompare ( magick , \"DICM\" , 4 ) != 0 ) ) { offset = SeekBlob ( image , 0L , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickString ( photometric , \"MONOCHROME1<S2SV_blank>\" , MagickPathExtent ) ; bits_allocated = 8 ; bytes_per_pixel = 1 ; polarity = MagickFalse ; data = ( unsigned char * ) NULL ; depth = 8 ; element = 0 ; explicit_vr [ 2 ] = '\\\\0' ; explicit_file = MagickFalse ; colors = 0 ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; graymap = ( int * ) NULL ; height = 0 ; max_value = 255UL ; mask = 0xffff ; number_scenes = 1 ; rescale_intercept = 0 ; rescale_slope = 1 ; samples_per_pixel = 1 ; scale = ( Quantum * ) NULL ; sequence = MagickFalse ; signed_data = ( ~ 0UL ) ; significant_bits = 0 ; use_explicit = MagickFalse ; explicit_retry = MagickFalse ; width = 0 ; window_center = 0 ; window_width = 0 ; for ( group = 0 ; ( group != 0x7FE0 ) || ( element != 0x0010 ) || ( sequence != MagickFalse ) ; ) { image -> offset = ( ssize_t ) TellBlob ( image ) ; group = ReadBlobLSBShort ( image ) ; element = ReadBlobLSBShort ( image ) ; if ( ( group != 0x0002 ) && ( image -> endian == MSBEndian ) ) { group = ( unsigned short ) ( ( group << 8 ) | ( ( group >> 8 ) & 0xFF ) ) ; element = ( unsigned short ) ( ( element << 8 ) | ( ( element >> 8 ) & 0xFF ) ) ; } quantum = 0 ; for ( i = 0 ; dicom_info [ i ] . group < 0xffff ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) CopyMagickString ( implicit_vr , dicom_info [ i ] . vr , MagickPathExtent ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) explicit_vr ) ; if ( count != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( explicit_file == MagickFalse ) && ( group != 0x0002 ) ) explicit_file = ( isupper ( ( unsigned char ) * explicit_vr ) != MagickFalse ) && ( isupper ( ( unsigned char ) * ( explicit_vr + 1 ) ) != MagickFalse ) ? MagickTrue : MagickFalse ; use_explicit = ( ( group == 0x0002 ) && ( explicit_retry == MagickFalse ) ) || ( explicit_file != MagickFalse ) ? MagickTrue : MagickFalse ; if ( ( use_explicit != MagickFalse ) && ( strncmp ( implicit_vr , \"xs\" , 2 ) == 0 ) ) ( void ) CopyMagickString ( implicit_vr , explicit_vr , MagickPathExtent ) ; if ( ( use_explicit == MagickFalse ) || ( strncmp ( implicit_vr , \"!!\" , 2 ) == 0 ) ) { offset = SeekBlob ( image , ( MagickOffsetType ) - 2 , SEEK_CUR ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; quantum = 4 ; } else { quantum = 2 ; if ( ( strncmp ( explicit_vr , \"OB\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"UN\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"SQ\" , 2 ) == 0 ) ) { ( void ) ReadBlobLSBShort ( image ) ; quantum = 4 ; } } datum = 0 ; if ( quantum == 4 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( quantum == 2 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } quantum = 0 ; length = 1 ; if ( datum != 0 ) { if ( ( strncmp ( implicit_vr , \"SS\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"US\" , 2 ) == 0 ) ) quantum = 2 ; else if ( ( strncmp ( implicit_vr , \"UL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"FL\" , 2 ) == 0 ) ) quantum = 4 ; else if ( strncmp ( implicit_vr , \"FD\" , 2 ) != 0 ) quantum = 1 ; else quantum = 8 ; if ( datum != ~ 0 ) length = ( size_t ) datum / quantum ; else { quantum = 0 ; length = 0 ; } } if ( image_info -> verbose != MagickFalse ) { if ( use_explicit == MagickFalse ) explicit_vr [ 0 ] = '\\\\0' ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) FormatLocaleFile ( stdout , \"0x%04lX<S2SV_blank>%4ld<S2SV_blank>%s-%s<S2SV_blank>(0x%04lx,0x%04lx)\" , ( unsigned long ) image -> offset , ( long ) length , implicit_vr , explicit_vr , ( unsigned long ) group , ( unsigned long ) element ) ; if ( dicom_info [ i ] . description != ( char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"<S2SV_blank>%s\" , dicom_info [ i ] . description ) ; ( void ) FormatLocaleFile ( stdout , \":<S2SV_blank>\" ) ; } if ( ( sequence == MagickFalse ) && ( group == 0x7FE0 ) && ( element == 0x0010 ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; break ; } data = ( unsigned char * ) NULL ; if ( ( length == 1 ) && ( quantum == 1 ) ) datum = ReadBlobByte ( image ) ; else if ( ( length == 1 ) && ( quantum == 2 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } else if ( ( length == 1 ) && ( quantum == 4 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( ( quantum != 0 ) && ( length != 0 ) ) { if ( ~ length >= 1 ) data = ( unsigned char * ) AcquireQuantumMemory ( length + 1 , quantum * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) quantum * length , data ) ; if ( count != ( ssize_t ) ( quantum * length ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"count=%d<S2SV_blank>quantum=%d<S2SV_blank>\" \"length=%d<S2SV_blank>group=%d\\\\n\" , ( int ) count , ( int ) quantum , ( int ) length , ( int ) group ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } data [ length * quantum ] = '\\\\0' ; } else if ( ( unsigned int ) datum == 0xFFFFFFFFU ) { sequence = MagickTrue ; continue ; } if ( ( unsigned int ) ( ( group << 16 ) | element ) == 0xFFFEE0DD ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; sequence = MagickFalse ; continue ; } if ( sequence != MagickFalse ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; continue ; } switch ( group ) { case 0x0002 : { switch ( element ) { case 0x0010 : { char transfer_syntax [ MagickPathExtent ] ; if ( ( datum == 0 ) && ( explicit_retry == MagickFalse ) ) { explicit_retry = MagickTrue ; ( void ) SeekBlob ( image , ( MagickOffsetType ) 0 , SEEK_SET ) ; group = 0 ; element = 0 ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"Corrupted<S2SV_blank>image<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>explicit<S2SV_blank>format\\\\n\" ) ; break ; } * transfer_syntax = '\\\\0' ; if ( data != ( unsigned char * ) NULL ) ( void ) CopyMagickString ( transfer_syntax , ( char * ) data , MagickPathExtent ) ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"transfer_syntax=%s\\\\n\" , ( const char * ) transfer_syntax ) ; if ( strncmp ( transfer_syntax , \"1.2.840.10008.1.2\" , 17 ) == 0 ) { int count , subtype , type ; type = 1 ; subtype = 0 ; if ( strlen ( transfer_syntax ) > 17 ) { count = sscanf ( transfer_syntax + 17 , \".%d.%d\" , & type , & subtype ) ; if ( count < 1 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } switch ( type ) { case 1 : { image -> endian = LSBEndian ; break ; } case 2 : { image -> endian = MSBEndian ; break ; } case 4 : { if ( ( subtype >= 80 ) && ( subtype <= 81 ) ) image -> compression = JPEGCompression ; else if ( ( subtype >= 90 ) && ( subtype <= 93 ) ) image -> compression = JPEG2000Compression ; else image -> compression = JPEGCompression ; break ; } case 5 : { image -> compression = RLECompression ; break ; } } } break ; } default : break ; } break ; } case 0x0028 : { switch ( element ) { case 0x0002 : { samples_per_pixel = ( size_t ) datum ; break ; } case 0x0004 : { <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) MagickMin ( length , MagickPathExtent - 1 ) ; i ++ ) <S2SV_EndBug> photometric [ i ] = ( char ) data [ i ] ; photometric [ i ] = '\\\\0' ; polarity = LocaleCompare ( photometric , \"MONOCHROME1<S2SV_blank>\" ) == 0 ? MagickTrue : MagickFalse ; break ; } case 0x0006 : { if ( datum == 1 ) image -> interlace = PlaneInterlace ; break ; } case 0x0008 : <S2SV_StartBug> { <S2SV_EndBug> number_scenes = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x0010 : { height = ( size_t ) datum ; break ; } case 0x0011 : { width = ( size_t ) datum ; break ; } case 0x0100 : { bits_allocated = ( size_t ) datum ; bytes_per_pixel = 1 ; if ( datum > 8 ) bytes_per_pixel = 2 ; depth = bits_allocated ; if ( depth > 32 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; max_value = ( 1UL << bits_allocated ) - 1 ; break ; } case 0x0101 : { significant_bits = ( size_t ) datum ; bytes_per_pixel = 1 ; if ( significant_bits > 8 ) bytes_per_pixel = 2 ; depth = significant_bits ; if ( depth > 32 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; max_value = ( 1UL << significant_bits ) - 1 ; mask = ( size_t ) GetQuantumRange ( significant_bits ) ; break ; } case 0x0102 : { break ; } case 0x0103 : { signed_data = ( size_t ) datum ; break ; } case 0x1050 : { if ( data != ( unsigned char * ) NULL ) window_center = ( ssize_t ) StringToLong ( ( char * ) data ) ; break ; } case 0x1051 : { if ( data != ( unsigned char * ) NULL ) window_width = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x1052 : { if ( data != ( unsigned char * ) NULL ) rescale_intercept = ( ssize_t ) StringToLong ( ( char * ) data ) ; break ; } case 0x1053 : { if ( data != ( unsigned char * ) NULL ) rescale_slope = ( ssize_t ) StringToLong ( ( char * ) data ) ; break ; } case 0x1200 : case 0x3006 : { if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / bytes_per_pixel ) ; datum = ( int ) colors ; graymap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * graymap ) ) ; if ( graymap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) if ( bytes_per_pixel == 1 ) graymap [ i ] = ( int ) data [ i ] ; else graymap [ i ] = ( int ) ( ( short * ) data ) [ i ] ; break ; } case 0x1201 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; redmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * redmap ) ) ; if ( redmap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; redmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1202 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; greenmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * greenmap ) ) ; if ( greenmap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; greenmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1203 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; bluemap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * bluemap ) ) ; if ( bluemap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; bluemap [ i ] = ( int ) index ; p += 2 ; } break ; } default : break ; } break ; } case 0x2050 : { switch ( element ) { case 0x0020 : { if ( ( data != ( unsigned char * ) NULL ) && ( strncmp ( ( char * ) data , \"INVERSE\" , 7 ) == 0 ) ) polarity = MagickTrue ; break ; } default : break ; } break ; } default : break ; } if ( data != ( unsigned char * ) NULL ) { char * attribute ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; if ( dicom_info [ i ] . description != ( char * ) NULL ) { attribute = AcquireString ( \"dcm:\" ) ; ( void ) ConcatenateString ( & attribute , dicom_info [ i ] . description ) ; for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i == ( ssize_t ) length ) || ( length > 4 ) ) { ( void ) SubstituteString ( & attribute , \"<S2SV_blank>\" , \"\" ) ; ( void ) SetImageProperty ( image , attribute , ( char * ) data , exception ) ; } attribute = DestroyString ( attribute ) ; } } if ( image_info -> verbose != MagickFalse ) { if ( data == ( unsigned char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"%d\\\\n\" , datum ) ; else { for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i != ( ssize_t ) length ) && ( length <= 4 ) ) { ssize_t j ; datum = 0 ; for ( j = ( ssize_t ) length - 1 ; j >= 0 ; j -- ) datum = ( 256 * datum + data [ j ] ) ; ( void ) FormatLocaleFile ( stdout , \"%d\" , datum ) ; } else for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( isprint ( ( int ) data [ i ] ) != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"%c\" , data [ i ] ) ; else ( void ) FormatLocaleFile ( stdout , \"%c\" , '.' ) ; ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; } } if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( ( width == 0 ) || ( height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; if ( signed_data == 0xffff ) signed_data = ( size_t ) ( significant_bits == 16 ? 1 : 0 ) ; if ( ( image -> compression == JPEGCompression ) || ( image -> compression == JPEG2000Compression ) ) { Image * images ; ImageInfo * read_info ; int c ; size_t length ; unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { MagickOffsetType offset ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; images = NewImageList ( ) ; for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { char filename [ MagickPathExtent ] ; const char * property ; FILE * file ; Image * jpeg_image ; int unique_file ; unsigned int tag ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( tag == 0xFFFEE0DD ) break ; if ( tag != 0xFFFEE000 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( file == ( FILE * ) NULL ) { ( void ) RelinquishUniqueFileResource ( filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , filename ) ; break ; } for ( ; length != 0 ; length -- ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } ( void ) fputc ( c , file ) ; } ( void ) fclose ( file ) ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"jpeg:%s\" , filename ) ; if ( image -> compression == JPEG2000Compression ) ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"j2k:%s\" , filename ) ; jpeg_image = ReadImage ( read_info , exception ) ; if ( jpeg_image != ( Image * ) NULL ) { ResetImagePropertyIterator ( image ) ; property = GetNextImageProperty ( image ) ; while ( property != ( const char * ) NULL ) { ( void ) SetImageProperty ( jpeg_image , property , GetImageProperty ( image , property , exception ) , exception ) ; property = GetNextImageProperty ( image ) ; } AppendImageToList ( & images , jpeg_image ) ; } ( void ) RelinquishUniqueFileResource ( filename ) ; } read_info = DestroyImageInfo ( read_info ) ; image = DestroyImage ( image ) ; return ( GetFirstImageInList ( images ) ) ; } if ( depth != ( 1UL * MAGICKCORE_QUANTUM_DEPTH ) ) { QuantumAny range ; size_t length ; length = ( size_t ) ( GetQuantumRange ( depth ) + 1 ) ; scale = ( Quantum * ) AcquireQuantumMemory ( length , sizeof ( * scale ) ) ; if ( scale == ( Quantum * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; range = GetQuantumRange ( depth ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) ( GetQuantumRange ( depth ) + 1 ) ; i ++ ) <S2SV_EndBug> scale [ i ] = ScaleAnyToQuantum ( ( size_t ) i , range ) ; } if ( image -> compression == RLECompression ) { size_t length ; unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { MagickOffsetType offset ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } } for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { if ( image_info -> ping != MagickFalse ) break ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; image -> depth = depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; image -> colorspace = RGBColorspace ; if ( ( image -> colormap == ( PixelInfo * ) NULL ) && ( samples_per_pixel == 1 ) ) { size_t one ; one = 1 ; if ( colors == 0 ) colors = one << depth ; if ( AcquireImageColormap ( image , one << depth , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( redmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = redmap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; } if ( greenmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = greenmap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . green = ( MagickRealType ) index ; } if ( bluemap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = bluemap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } if ( graymap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = graymap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; image -> colormap [ i ] . green = ( MagickRealType ) index ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; stream_info -> remaining = ( size_t ) ReadBlobLSBLong ( image ) ; if ( ( tag != 0xFFFEE000 ) || ( stream_info -> remaining <= 64 ) || ( EOFBlob ( image ) != MagickFalse ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; stream_info -> count = 0 ; stream_info -> segment_count = ReadBlobLSBLong ( image ) ; if ( stream_info -> segment_count > 1 ) { bytes_per_pixel = 1 ; depth = 8 ; } for ( i = 0 ; i < 15 ; i ++ ) stream_info -> segments [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; stream_info -> remaining -= 64 ; } if ( ( samples_per_pixel > 1 ) && ( image -> interlace == PlaneInterlace ) ) { for ( i = 0 ; i < ( ssize_t ) samples_per_pixel ; i ++ ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( ( int ) i ) { case 0 : { SetPixelRed ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 1 : { SetPixelGreen ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 2 : { SetPixelBlue ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 3 : { SetPixelAlpha ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } } else { const char * option ; int byte ; PixelPacket pixel ; byte = 0 ; i = 0 ; if ( ( window_center != 0 ) && ( window_width == 0 ) ) window_width = ( size_t ) window_center ; option = GetImageOption ( image_info , \"dcm:display-range\" ) ; if ( option != ( const char * ) NULL ) { if ( LocaleCompare ( option , \"reset\" ) == 0 ) window_width = 0 ; } ( void ) ResetMagickMemory ( & pixel , 0 , sizeof ( pixel ) ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( samples_per_pixel == 1 ) { int pixel_value ; if ( bytes_per_pixel == 1 ) pixel_value = polarity != MagickFalse ? ( ( int ) max_value - ReadDCMByte ( stream_info , image ) ) : ReadDCMByte ( stream_info , image ) ; else if ( ( bits_allocated != 12 ) || ( significant_bits != 12 ) ) { if ( signed_data ) pixel_value = ReadDCMSignedShort ( stream_info , image ) ; else pixel_value = ReadDCMShort ( stream_info , image ) ; if ( polarity != MagickFalse ) pixel_value = ( int ) max_value - pixel_value ; } else { if ( ( i & 0x01 ) != 0 ) pixel_value = ( ReadDCMByte ( stream_info , image ) << 8 ) | byte ; else { pixel_value = ReadDCMSignedShort ( stream_info , image ) ; byte = ( int ) ( pixel_value & 0x0f ) ; pixel_value >>= 4 ; } i ++ ; } index = ( pixel_value * rescale_slope ) + rescale_intercept ; if ( window_width == 0 ) { if ( signed_data == 1 ) index -= 32767 ; } else { ssize_t window_max , window_min ; window_min = ( ssize_t ) ceil ( ( double ) window_center - ( window_width - 1.0 ) / 2.0 - 0.5 ) ; window_max = ( ssize_t ) floor ( ( double ) window_center + ( window_width - 1.0 ) / 2.0 + 0.5 ) ; if ( ( ssize_t ) index <= window_min ) index = 0 ; else if ( ( ssize_t ) index > window_max ) index = ( int ) max_value ; else index = ( int ) ( max_value * ( ( ( index - window_center - 0.5 ) / ( window_width - 1 ) ) + 0.5 ) ) ; } index &= mask ; index = ( int ) ConstrainColormapIndex ( image , ( size_t ) index , exception ) ; SetPixelIndex ( image , ( Quantum ) index , q ) ; pixel . red = ( unsigned int ) image -> colormap [ index ] . red ; pixel . green = ( unsigned int ) image -> colormap [ index ] . green ; pixel . blue = ( unsigned int ) image -> colormap [ index ] . blue ; } else { if ( bytes_per_pixel == 1 ) { pixel . red = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . green = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . blue = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; } else { pixel . red = ReadDCMShort ( stream_info , image ) ; pixel . green = ReadDCMShort ( stream_info , image ) ; pixel . blue = ReadDCMShort ( stream_info , image ) ; } pixel . red &= mask ; pixel . green &= mask ; pixel . blue &= mask ; if ( scale != ( Quantum * ) NULL ) { <S2SV_StartBug> pixel . red = scale [ pixel . red ] ; <S2SV_EndBug> <S2SV_StartBug> pixel . green = scale [ pixel . green ] ; <S2SV_EndBug> <S2SV_StartBug> pixel . blue = scale [ pixel . blue ] ; <S2SV_EndBug> } } SetPixelRed ( image , ( Quantum ) pixel . red , q ) ; SetPixelGreen ( image , ( Quantum ) pixel . green , q ) ; SetPixelBlue ( image , ( Quantum ) pixel . blue , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> segment_count > 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( samples_per_pixel == 1 ) { int pixel_value ; if ( bytes_per_pixel == 1 ) pixel_value = polarity != MagickFalse ? ( ( int ) max_value - ReadDCMByte ( stream_info , image ) ) : ReadDCMByte ( stream_info , image ) ; else if ( ( bits_allocated != 12 ) || ( significant_bits != 12 ) ) { pixel_value = ( int ) ( polarity != MagickFalse ? ( max_value - ReadDCMShort ( stream_info , image ) ) : ReadDCMShort ( stream_info , image ) ) ; if ( signed_data == 1 ) pixel_value = ( ( signed short ) pixel_value ) ; } else { if ( ( i & 0x01 ) != 0 ) pixel_value = ( ReadDCMByte ( stream_info , image ) << 8 ) | byte ; else { pixel_value = ReadDCMShort ( stream_info , image ) ; byte = ( int ) ( pixel_value & 0x0f ) ; pixel_value >>= 4 ; } i ++ ; } index = ( pixel_value * rescale_slope ) + rescale_intercept ; if ( window_width == 0 ) { if ( signed_data == 1 ) index -= 32767 ; } else { ssize_t window_max , window_min ; window_min = ( ssize_t ) ceil ( ( double ) window_center - ( window_width - 1.0 ) / 2.0 - 0.5 ) ; window_max = ( ssize_t ) floor ( ( double ) window_center + ( window_width - 1.0 ) / 2.0 + 0.5 ) ; if ( ( ssize_t ) index <= window_min ) index = 0 ; else if ( ( ssize_t ) index > window_max ) index = ( int ) max_value ; else index = ( int ) ( max_value * ( ( ( index - window_center - 0.5 ) / ( window_width - 1 ) ) + 0.5 ) ) ; } index &= mask ; index = ( int ) ConstrainColormapIndex ( image , ( size_t ) index , exception ) ; SetPixelIndex ( image , ( Quantum ) ( ( ( size_t ) GetPixelIndex ( image , q ) ) | ( ( ( size_t ) index ) << 8 ) ) , q ) ; pixel . red = ( unsigned int ) image -> colormap [ index ] . red ; pixel . green = ( unsigned int ) image -> colormap [ index ] . green ; pixel . blue = ( unsigned int ) image -> colormap [ index ] . blue ; } else { if ( bytes_per_pixel == 1 ) { pixel . red = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . green = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . blue = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; } else { pixel . red = ReadDCMShort ( stream_info , image ) ; pixel . green = ReadDCMShort ( stream_info , image ) ; pixel . blue = ReadDCMShort ( stream_info , image ) ; } pixel . red &= mask ; pixel . green &= mask ; pixel . blue &= mask ; if ( scale != ( Quantum * ) NULL ) { pixel . red = scale [ pixel . red ] ; pixel . green = scale [ pixel . green ] ; pixel . blue = scale [ pixel . blue ] ; } } SetPixelRed ( image , ( Quantum ) ( ( ( size_t ) GetPixelRed ( image , q ) ) | ( ( ( size_t ) pixel . red ) << 8 ) ) , q ) ; SetPixelGreen ( image , ( Quantum ) ( ( ( size_t ) GetPixelGreen ( image , q ) ) | ( ( ( size_t ) pixel . green ) << 8 ) ) , q ) ; SetPixelBlue ( image , ( Quantum ) ( ( ( size_t ) GetPixelBlue ( image , q ) ) | ( ( ( size_t ) pixel . blue ) << 8 ) ) , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( SetImageGray ( image , exception ) != MagickFalse ) ( void ) SetImageColorspace ( image , GRAYColorspace , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( number_scenes - 1 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( scale != ( Quantum * ) NULL ) scale = ( Quantum * ) RelinquishMagickMemory ( scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0x0004 : { if ( data == ( unsigned char * ) NULL ) break ; <S2SV_ModStart> 0x0008 : { if ( data == ( unsigned char * ) NULL ) break ; <S2SV_ModStart> 0 ; i <= <S2SV_ModEnd> ( ssize_t ) <S2SV_ModStart> ( ssize_t ) <S2SV_ModEnd> GetQuantumRange ( depth <S2SV_ModStart> GetQuantumRange ( depth <S2SV_ModEnd> ) ; i <S2SV_ModStart> NULL ) { if ( pixel . red <= GetQuantumRange ( depth ) ) <S2SV_ModStart> red ] ; if ( pixel . green <= GetQuantumRange ( depth ) ) <S2SV_ModStart> green ] ; if ( pixel . blue <= GetQuantumRange ( depth ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9773\n\n```\nCWE-284 void _moddeinit ( module_unload_intent_t intent ) { service_named_unbind_command ( \"chanserv\" , & cs_flags ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cs_flags ) ; hook_del_nick_can_register ( check_registration_keywords ) ; hook_del_user_can_register ( check_registration_keywords ) ; del_conf_item ( \"ANOPE_FLAGS_COMPAT\" , & chansvs . me -> conf_table ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7885\n\n```\nCWE-200 long dgnc_mgmt_ioctl ( struct file * file , unsigned int cmd , unsigned long arg ) { unsigned long flags ; void __user * uarg = ( void __user * ) arg ; switch ( cmd ) { case DIGI_GETDD : { struct digi_dinfo ddi ; spin_lock_irqsave ( & dgnc_global_lock , flags ) ; <S2SV_StartBug> ddi . dinfo_nboards = dgnc_NumBoards ; <S2SV_EndBug> sprintf ( ddi . dinfo_version , \"%s\" , DG_PART ) ; spin_unlock_irqrestore ( & dgnc_global_lock , flags ) ; if ( copy_to_user ( uarg , & ddi , sizeof ( ddi ) ) ) return - EFAULT ; break ; } case DIGI_GETBD : { int brd ; struct digi_info di ; if ( copy_from_user ( & brd , uarg , sizeof ( int ) ) ) return - EFAULT ; if ( brd < 0 || brd >= dgnc_NumBoards ) return - ENODEV ; memset ( & di , 0 , sizeof ( di ) ) ; di . info_bdnum = brd ; spin_lock_irqsave ( & dgnc_Board [ brd ] -> bd_lock , flags ) ; di . info_bdtype = dgnc_Board [ brd ] -> dpatype ; di . info_bdstate = dgnc_Board [ brd ] -> dpastatus ; di . info_ioport = 0 ; di . info_physaddr = ( ulong ) dgnc_Board [ brd ] -> membase ; di . info_physsize = ( ulong ) dgnc_Board [ brd ] -> membase - dgnc_Board [ brd ] -> membase_end ; if ( dgnc_Board [ brd ] -> state != BOARD_FAILED ) di . info_nports = dgnc_Board [ brd ] -> nasync ; else di . info_nports = 0 ; spin_unlock_irqrestore ( & dgnc_Board [ brd ] -> bd_lock , flags ) ; if ( copy_to_user ( uarg , & di , sizeof ( di ) ) ) return - EFAULT ; break ; } case DIGI_GET_NI_INFO : { struct channel_t * ch ; struct ni_info ni ; unsigned char mstat = 0 ; uint board = 0 ; uint channel = 0 ; if ( copy_from_user ( & ni , uarg , sizeof ( ni ) ) ) return - EFAULT ; board = ni . board ; channel = ni . channel ; if ( board >= dgnc_NumBoards ) return - ENODEV ; if ( channel >= dgnc_Board [ board ] -> nasync ) return - ENODEV ; ch = dgnc_Board [ board ] -> channels [ channel ] ; if ( ! ch || ch -> magic != DGNC_CHANNEL_MAGIC ) return - ENODEV ; memset ( & ni , 0 , sizeof ( ni ) ) ; ni . board = board ; ni . channel = channel ; spin_lock_irqsave ( & ch -> ch_lock , flags ) ; mstat = ( ch -> ch_mostat | ch -> ch_mistat ) ; if ( mstat & UART_MCR_DTR ) { ni . mstat |= TIOCM_DTR ; ni . dtr = TIOCM_DTR ; } if ( mstat & UART_MCR_RTS ) { ni . mstat |= TIOCM_RTS ; ni . rts = TIOCM_RTS ; } if ( mstat & UART_MSR_CTS ) { ni . mstat |= TIOCM_CTS ; ni . cts = TIOCM_CTS ; } if ( mstat & UART_MSR_RI ) { ni . mstat |= TIOCM_RI ; ni . ri = TIOCM_RI ; } if ( mstat & UART_MSR_DCD ) { ni . mstat |= TIOCM_CD ; ni . dcd = TIOCM_CD ; } if ( mstat & UART_MSR_DSR ) ni . mstat |= TIOCM_DSR ; ni . iflag = ch -> ch_c_iflag ; ni . oflag = ch -> ch_c_oflag ; ni . cflag = ch -> ch_c_cflag ; ni . lflag = ch -> ch_c_lflag ; if ( ch -> ch_digi . digi_flags & CTSPACE || ch -> ch_c_cflag & CRTSCTS ) ni . hflow = 1 ; else ni . hflow = 0 ; if ( ( ch -> ch_flags & CH_STOPI ) || ( ch -> ch_flags & CH_FORCED_STOPI ) ) ni . recv_stopped = 1 ; else ni . recv_stopped = 0 ; if ( ( ch -> ch_flags & CH_STOP ) || ( ch -> ch_flags & CH_FORCED_STOP ) ) ni . xmit_stopped = 1 ; else ni . xmit_stopped = 0 ; ni . curtx = ch -> ch_txcount ; ni . currx = ch -> ch_rxcount ; ni . baud = ch -> ch_old_baud ; spin_unlock_irqrestore ( & ch -> ch_lock , flags ) ; if ( copy_to_user ( uarg , & ni , sizeof ( ni ) ) ) return - EFAULT ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flags ) ; memset ( & ddi , 0 , sizeof ( ddi ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 ssize_t cdf_read_short_sector ( const cdf_stream_t * sst , void * buf , size_t offs , size_t len , const cdf_header_t * h , cdf_secid_t id ) { <S2SV_StartBug> size_t ss = CDF_SEC_SIZE ( h ) ; <S2SV_EndBug> size_t pos = CDF_SHORT_SEC_POS ( h , id ) ; assert ( ss == len ) ; <S2SV_StartBug> if ( pos > ss * sst -> sst_len ) { <S2SV_EndBug> DPRINTF ( ( \"Out<S2SV_blank>of<S2SV_blank>bounds<S2SV_blank>read<S2SV_blank>%\" SIZE_T_FORMAT \"u<S2SV_blank>><S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , <S2SV_StartBug> pos , ss * sst -> sst_len ) ) ; <S2SV_EndBug> return - 1 ; } ( void ) memcpy ( ( ( char * ) buf ) + offs , ( ( const char * ) sst -> sst_tab ) + pos , len ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t ss = CDF_SHORT_SEC_SIZE <S2SV_ModEnd> ( h ) <S2SV_ModStart> ( pos > CDF_SEC_SIZE ( h ) <S2SV_ModEnd> * sst -> <S2SV_ModStart> , pos , CDF_SEC_SIZE ( h ) <S2SV_ModEnd> * sst ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15649\n\n```\nCWE-362 static int packet_do_bind ( struct sock * sk , const char * name , int ifindex , __be16 proto ) { struct packet_sock * po = pkt_sk ( sk ) ; struct net_device * dev_curr ; __be16 proto_curr ; bool need_rehook ; struct net_device * dev = NULL ; int ret = 0 ; bool unlisted = false ; <S2SV_StartBug> if ( po -> fanout ) <S2SV_EndBug> <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> spin_lock ( & po -> bind_lock ) ; rcu_read_lock ( ) ; if ( name ) { dev = dev_get_by_name_rcu ( sock_net ( sk ) , name ) ; if ( ! dev ) { ret = - ENODEV ; goto out_unlock ; } } else if ( ifindex ) { dev = dev_get_by_index_rcu ( sock_net ( sk ) , ifindex ) ; if ( ! dev ) { ret = - ENODEV ; goto out_unlock ; } } if ( dev ) dev_hold ( dev ) ; proto_curr = po -> prot_hook . type ; dev_curr = po -> prot_hook . dev ; need_rehook = proto_curr != proto || dev_curr != dev ; if ( need_rehook ) { if ( po -> running ) { rcu_read_unlock ( ) ; __unregister_prot_hook ( sk , true ) ; rcu_read_lock ( ) ; dev_curr = po -> prot_hook . dev ; if ( dev ) unlisted = ! dev_get_by_index_rcu ( sock_net ( sk ) , dev -> ifindex ) ; } po -> num = proto ; po -> prot_hook . type = proto ; if ( unlikely ( unlisted ) ) { dev_put ( dev ) ; po -> prot_hook . dev = NULL ; po -> ifindex = - 1 ; packet_cached_dev_reset ( po ) ; } else { po -> prot_hook . dev = dev ; po -> ifindex = dev ? dev -> ifindex : 0 ; packet_cached_dev_assign ( po , dev ) ; } } if ( dev_curr ) dev_put ( dev_curr ) ; if ( proto == 0 || ! need_rehook ) goto out_unlock ; if ( ! unlisted && ( ! dev || ( dev -> flags & IFF_UP ) ) ) { register_prot_hook ( sk ) ; } else { sk -> sk_err = ENETDOWN ; if ( ! sock_flag ( sk , SOCK_DEAD ) ) sk -> sk_error_report ( sk ) ; } out_unlock : rcu_read_unlock ( ) ; spin_unlock ( & po -> bind_lock ) ; release_sock ( sk ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = false ; lock_sock ( sk ) ; spin_lock ( & po -> bind_lock ) ; rcu_read_lock ( ) ; <S2SV_ModStart> -> fanout ) { ret = <S2SV_ModEnd> - EINVAL ; <S2SV_ModStart> - EINVAL ; goto out_unlock ; } <S2SV_ModEnd> if ( name\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0816\n\n```\nCWE-119 WORD32 ih264d_parse_inter_slice_data_cavlc ( dec_struct_t * ps_dec , dec_slice_params_t * ps_slice , UWORD16 u2_first_mb_in_slice ) { UWORD32 uc_more_data_flag ; WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 , u1_mb_idx ; UWORD32 i2_mb_skip_run ; UWORD32 u1_read_mb_type ; UWORD32 u1_mbaff ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD32 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end = 0 ; UWORD32 u1_tfr_n_mb = 0 ; UWORD32 u1_decode_nmb = 0 ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD32 u1_mb_threshold ; WORD32 ret = OK ; if ( ps_slice -> u1_slice_type == P_SLICE ) { u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; u1_mb_threshold = 5 ; } else { u1_inter_mb_type = B_MB ; u1_deblk_mb_type = D_B_SLICE ; u1_mb_threshold = 23 ; } ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; u1_num_mbs = u1_mb_idx ; u1_num_mbsNby2 = 0 ; u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff ; i2_mb_skip_run = 0 ; uc_more_data_flag = 1 ; u1_read_mb_type = 0 ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; ps_dec -> pv_prev_mb_parse_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) { ret = ERROR_MB_ADDRESS_T ; break ; } ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; if ( ( ! i2_mb_skip_run ) && ( ! u1_read_mb_type ) ) { UWORD32 u4_bitstream_offset = * pu4_bitstrm_ofst ; UWORD32 u4_word , u4_ldz ; NEXTBITS_32 ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_ldz = CLZ ( u4_word ) ; u4_bitstream_offset += ( u4_ldz + 1 ) ; u4_word = 0 ; if ( u4_ldz ) { GETBITS ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf , u4_ldz ) ; } * pu4_bitstrm_ofst = u4_bitstream_offset ; i2_mb_skip_run = ( ( 1 << u4_ldz ) + u4_word - 1 ) ; COPYTHECONTEXT ( \"mb_skip_run\" , i2_mb_skip_run ) ; uc_more_data_flag = MORE_RBSP_DATA ( ps_bitstrm ) ; u1_read_mb_type = uc_more_data_flag ; } ps_dec -> pf_get_mb_info ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; if ( i2_mb_skip_run ) { ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> u1_sub_mb_num = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_mb_mc_mode = PRED_16x16 ; ps_cur_mb_info -> u1_cbp = 0 ; { parse_part_params_t * ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; } ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CAVLC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; i2_mb_skip_run -- ; } else { u1_read_mb_type = 0 ; { UWORD32 u4_bitstream_offset = * pu4_bitstrm_ofst ; UWORD32 u4_word , u4_ldz , u4_temp ; NEXTBITS_32 ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_ldz = CLZ ( u4_word ) ; u4_bitstream_offset += ( u4_ldz + 1 ) ; u4_word = 0 ; if ( u4_ldz ) GETBITS ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf , u4_ldz ) ; * pu4_bitstrm_ofst = u4_bitstream_offset ; u4_temp = ( ( 1 << u4_ldz ) + u4_word - 1 ) ; if ( u4_temp > ( UWORD32 ) ( 25 + u1_mb_threshold ) ) return ERROR_MB_TYPE ; u1_mb_type = u4_temp ; COPYTHECONTEXT ( \"u1_mb_type\" , u1_mb_type ) ; } ps_cur_mb_info -> u1_mb_type = u1_mb_type ; if ( u1_mb_type < u1_mb_threshold ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ret = ps_dec -> pf_parse_inter_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs , u1_num_mbsNby2 ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; } else { ps_parse_mb_data -> u1_num_part = 0 ; ps_parse_mb_data -> u1_isI_mb = 1 ; if ( ( 25 + u1_mb_threshold ) == u1_mb_type ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = I_PCM_MB ; ret = ih264d_parse_ipcm_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs ) ; if ( ret != OK ) return ret ; ps_dec -> u1_qp = 0 ; } else { ret = ih264d_parse_imb_cavlc ( ps_dec , ps_cur_mb_info , u1_num_mbs , ( UWORD8 ) ( u1_mb_type - u1_mb_threshold ) ) ; if ( ret != OK ) return ret ; } ps_cur_deblk_mb -> u1_mb_type |= D_INTRA_MB ; } uc_more_data_flag = MORE_RBSP_DATA ( ps_bitstrm ) ; } ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; u1_num_mbs ++ ; <S2SV_StartBug> ps_dec -> u2_total_mbs_coded ++ ; <S2SV_EndBug> u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ( ! ( uc_more_data_flag || i2_mb_skip_run ) ) ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; { ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } } if ( u1_decode_nmb ) { if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } <S2SV_StartBug> if ( u1_tfr_n_mb ) <S2SV_EndBug> u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ( u2_first_mb_in_slice << u1_mbaff ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u1_num_mbs ++ ; <S2SV_ModEnd> u1_num_mbsNby2 ++ ; <S2SV_ModStart> ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static void dump_completed_IO ( struct inode * inode ) { # ifdef EXT4_DEBUG struct list_head * cur , * before , * after ; ext4_io_end_t * io , * io0 , * io1 ; <S2SV_StartBug> if ( list_empty ( & EXT4_I ( inode ) -> i_completed_io_list ) ) { <S2SV_EndBug> ext4_debug ( \"inode<S2SV_blank>%lu<S2SV_blank>completed_io<S2SV_blank>list<S2SV_blank>is<S2SV_blank>empty\\\\n\" , inode -> i_ino ) ; return ; } <S2SV_StartBug> ext4_debug ( \"Dump<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>completed_io<S2SV_blank>list<S2SV_blank>\\\\n\" , inode -> i_ino ) ; <S2SV_EndBug> list_for_each_entry ( io , & EXT4_I ( inode ) -> i_completed_io_list , list ) { cur = & io -> list ; before = cur -> prev ; io0 = container_of ( before , ext4_io_end_t , list ) ; after = cur -> next ; io1 = container_of ( after , ext4_io_end_t , list ) ; ext4_debug ( \"io<S2SV_blank>0x%p<S2SV_blank>from<S2SV_blank>inode<S2SV_blank>%lu,prev<S2SV_blank>0x%p,next<S2SV_blank>0x%p\\\\n\" , io , inode -> i_ino , io0 , io1 ) ; } <S2SV_StartBug> # endif <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * io1 ; unsigned long flags ; <S2SV_ModStart> inode -> i_ino ) ; spin_lock_irqsave ( & EXT4_I ( inode ) -> i_completed_io_lock , flags <S2SV_ModStart> ) ; } spin_unlock_irqrestore ( & EXT4_I ( inode ) -> i_completed_io_lock , flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 <S2SV_StartBug> static int __perf_event_overflow ( struct perf_event * event , int nmi , <S2SV_EndBug> int throttle , struct perf_sample_data * data , struct pt_regs * regs ) { int events = atomic_read ( & event -> event_limit ) ; struct hw_perf_event * hwc = & event -> hw ; int ret = 0 ; if ( unlikely ( ! is_sampling_event ( event ) ) ) return 0 ; if ( unlikely ( hwc -> interrupts >= max_samples_per_tick ) ) { if ( throttle ) { hwc -> interrupts = MAX_INTERRUPTS ; perf_log_throttle ( event , 0 ) ; ret = 1 ; } } else hwc -> interrupts ++ ; if ( event -> attr . freq ) { u64 now = perf_clock ( ) ; s64 delta = now - hwc -> freq_time_stamp ; hwc -> freq_time_stamp = now ; if ( delta > 0 && delta < 2 * TICK_NSEC ) perf_adjust_period ( event , delta , hwc -> last_period ) ; } event -> pending_kill = POLL_IN ; if ( events && atomic_dec_and_test ( & event -> event_limit ) ) { ret = 1 ; event -> pending_kill = POLL_HUP ; <S2SV_StartBug> if ( nmi ) { <S2SV_EndBug> event -> pending_disable = 1 ; irq_work_queue ( & event -> pending ) ; <S2SV_StartBug> } else <S2SV_EndBug> perf_event_disable ( event ) ; } if ( event -> overflow_handler ) event -> overflow_handler ( event , nmi , data , regs ) ; else <S2SV_StartBug> perf_event_output ( event , nmi , data , regs ) ; <S2SV_EndBug> if ( event -> fasync && event -> pending_kill ) { <S2SV_StartBug> if ( nmi ) { <S2SV_EndBug> event -> pending_wakeup = 1 ; <S2SV_StartBug> irq_work_queue ( & event -> pending ) ; <S2SV_EndBug> } else perf_event_wakeup ( event ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event * event <S2SV_ModEnd> , int throttle <S2SV_ModStart> = POLL_HUP ; <S2SV_ModEnd> event -> pending_disable <S2SV_ModStart> ) ; } if ( event -> overflow_handler ) event -> overflow_handler ( event , data , regs ) ; else <S2SV_ModEnd> perf_event_output ( event <S2SV_ModStart> perf_event_output ( event <S2SV_ModEnd> , data , <S2SV_ModStart> pending_kill ) { <S2SV_ModEnd> event -> pending_wakeup <S2SV_ModStart> event -> pending <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 void test_re ( ) { assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi(s|p)/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssim*/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssa?/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/Miss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/(M|N)iss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/[M-N]iss/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/(Mi|ssi)ssippi/<S2SV_blank>nocase<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ppi\\\\\\\\tmi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ppi\\\\\\\\.mi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^mississippi/<S2SV_blank>fullword<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_true_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/mississippi.*mississippi$/s<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\\\\tmississippi.mississippi\\\\nmississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^ssi/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssi$/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/ssissi/<S2SV_blank>fullword<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_false_rule ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/^[isp]+/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"mississippi\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/a.{1,2}b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>6<S2SV_blank>}\" , \"a\\\\0x\\\\0b\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/a.{1,2}b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>8<S2SV_blank>}\" , \"a\\\\0x\\\\0x\\\\0b\\\\0\" ) ; <S2SV_StartBug> assert_regexp_syntax_error ( \")\" ) ; <S2SV_EndBug> assert_true_regexp ( \"abc\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"abc\" , \"xbc\" ) ; assert_false_regexp ( \"abc\" , \"axc\" ) ; assert_false_regexp ( \"abc\" , \"abx\" ) ; assert_true_regexp ( \"abc\" , \"xabcx\" , \"abc\" ) ; assert_true_regexp ( \"abc\" , \"ababc\" , \"abc\" ) ; assert_true_regexp ( \"a.c\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"a.b\" , \"a\\\\nb\" ) ; assert_false_regexp ( \"a.*b\" , \"acc\\\\nccb\" ) ; assert_false_regexp ( \"a.{4,5}b\" , \"acc\\\\nccb\" ) ; assert_true_regexp ( \"a.b\" , \"a\\\\rb\" , \"a\\\\rb\" ) ; assert_true_regexp ( \"ab*c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"ab*bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*bc\" , \"abbc\" , \"abbc\" ) ; assert_true_regexp ( \"a.*bb\" , \"abbbb\" , \"abbbb\" ) ; assert_true_regexp ( \"a.*?bbb\" , \"abbbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"a.*c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a.*c\" , \"axyzc\" , \"axyzc\" ) ; assert_true_regexp ( \"ab+c\" , \"abbc\" , \"abbc\" ) ; assert_false_regexp ( \"ab+c\" , \"ac\" ) ; assert_true_regexp ( \"ab+\" , \"abbbb\" , \"abbbb\" ) ; assert_true_regexp ( \"ab+?\" , \"abbbb\" , \"ab\" ) ; assert_false_regexp ( \"ab+bc\" , \"abc\" ) ; assert_false_regexp ( \"ab+bc\" , \"abq\" ) ; assert_true_regexp ( \"a+b+c\" , \"aabbabc\" , \"abc\" ) ; assert_false_regexp ( \"ab?bc\" , \"abbbbc\" ) ; assert_true_regexp ( \"ab?c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab*?\" , \"abbb\" , \"a\" ) ; assert_true_regexp ( \"ab?c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"ab??\" , \"ab\" , \"a\" ) ; assert_true_regexp ( \"a(b|x)c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a(b|x)c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a(b|.)c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a(b|x|y)c\" , \"ayc\" , \"ayc\" ) ; assert_true_regexp ( \"(a+|b)*\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a|b|c|d|e\" , \"e\" , \"e\" ) ; assert_true_regexp ( \"(a|b|c|d|e)f\" , \"ef\" , \"ef\" ) ; assert_true_regexp ( \".b{2}\" , \"abb\" , \"abb\" ) ; assert_true_regexp ( \".b{2,3}\" , \"abbb\" , \"abbb\" ) ; assert_true_regexp ( \".b{2,3}?\" , \"abbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{2,3}c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{2,3}?c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \".b{2,3}cccc\" , \"abbbcccc\" , \"abbbcccc\" ) ; assert_true_regexp ( \".b{2,3}?cccc\" , \"abbbcccc\" , \"bbbcccc\" ) ; assert_true_regexp ( \"a.b{2,3}cccc\" , \"aabbbcccc\" , \"aabbbcccc\" ) ; assert_true_regexp ( \"ab{2,3}c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{2,3}?c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{0,1}?c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a{0,1}?bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a{0,1}bc\" , \"bbc\" , \"bc\" ) ; assert_true_regexp ( \"a{0,1}?bc\" , \"abc\" , \"bc\" ) ; assert_true_regexp ( \"aa{0,1}?bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"aa{0,1}?bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"aa{0,1}bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab{1}c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab{1,2}c\" , \"abbc\" , \"abbc\" ) ; assert_true_regexp ( \"ab{1,}c\" , \"abbbc\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{1,}b\" , \"ab\" ) ; assert_false_regexp ( \"ab{1}c\" , \"abbc\" ) ; assert_true_regexp ( \"ab{0,}c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"ab{1,1}c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"ab{0,}c\" , \"abbbc\" , \"abbbc\" ) ; assert_true_regexp ( \"ab{,3}c\" , \"abbbc\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{,2}c\" , \"abbbc\" ) ; assert_false_regexp ( \"ab{4,5}bc\" , \"abbbbc\" ) ; assert_true_regexp ( \"ab{0,1}\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{0,2}\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{0,3}\" , \"abbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"ab{0,4}\" , \"abbbbb\" , \"abbbb\" ) ; assert_true_regexp ( \"ab{1,1}\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{1,2}\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{1,3}\" , \"abbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"ab{2,2}\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{2,3}\" , \"abbbbb\" , \"abbb\" ) ; assert_true_regexp ( \"ab{1,3}?\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{0,1}?\" , \"abbbbb\" , \"a\" ) ; assert_true_regexp ( \"ab{0,2}?\" , \"abbbbb\" , \"a\" ) ; assert_true_regexp ( \"ab{0,3}?\" , \"abbbbb\" , \"a\" ) ; assert_true_regexp ( \"ab{0,4}?\" , \"abbbbb\" , \"a\" ) ; assert_true_regexp ( \"ab{1,1}?\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{1,2}?\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{1,3}?\" , \"abbbbb\" , \"ab\" ) ; assert_true_regexp ( \"ab{2,2}?\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \"ab{2,3}?\" , \"abbbbb\" , \"abb\" ) ; assert_true_regexp ( \".(abc){0,1}\" , \"xabcabcabcabc\" , \"xabc\" ) ; assert_true_regexp ( \".(abc){0,2}\" , \"xabcabcabcabc\" , \"xabcabc\" ) ; assert_true_regexp ( \"x{1,2}abcd\" , \"xxxxabcd\" , \"xxabcd\" ) ; assert_true_regexp ( \"x{1,2}abcd\" , \"xxxxabcd\" , \"xxabcd\" ) ; assert_true_regexp ( \"ab{.*}\" , \"ab{c}\" , \"ab{c}\" ) ; assert_true_regexp ( \".(aa){1,2}\" , \"aaaaaaaaaa\" , \"aaaaa\" ) ; assert_true_regexp ( \"a.(bc.){2}\" , \"aabcabca\" , \"aabcabca\" ) ; assert_true_regexp ( \"(ab{1,2}c){1,3}\" , \"abbcabc\" , \"abbcabc\" ) ; assert_true_regexp ( \"ab(c|cc){1,3}d\" , \"abccccccd\" , \"abccccccd\" ) ; assert_true_regexp ( \"a[bx]c\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a[bx]c\" , \"axc\" , \"axc\" ) ; assert_true_regexp ( \"a[0-9]*b\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a[0-9]*b\" , \"a0123456789b\" , \"a0123456789b\" ) ; assert_true_regexp ( \"[0-9a-f]+\" , \"0123456789abcdef\" , \"0123456789abcdef\" ) ; assert_true_regexp ( \"[0-9a-f]+\" , \"xyz0123456789xyz\" , \"0123456789\" ) ; assert_true_regexp ( \"a[\\\\\\\\s\\\\\\\\S]b\" , \"a<S2SV_blank>b\" , \"a<S2SV_blank>b\" ) ; assert_true_regexp ( \"a[\\\\\\\\d\\\\\\\\D]b\" , \"a1b\" , \"a1b\" ) ; assert_false_regexp ( \"[x-z]+\" , \"abc\" ) ; assert_true_regexp ( \"a[-]?c\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a[-b]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[-b]\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a[b-]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[b-]\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"[a-c-e]\" , \"b\" , \"b\" ) ; assert_true_regexp ( \"[a-c-e]\" , \"-\" , \"-\" ) ; assert_false_regexp ( \"[a-c-e]\" , \"d\" ) ; assert_regexp_syntax_error ( \"[b-a]\" ) ; assert_regexp_syntax_error ( \"(abc\" ) ; assert_regexp_syntax_error ( \"abc)\" ) ; assert_regexp_syntax_error ( \"a[]b\" ) ; assert_true_regexp ( \"a[\\\\\\\\-b]\" , \"a-\" , \"a-\" ) ; assert_true_regexp ( \"a[\\\\\\\\-b]\" , \"ab\" , \"ab\" ) ; assert_true_regexp ( \"a]\" , \"a]\" , \"a]\" ) ; assert_true_regexp ( \"a[]]b\" , \"a]b\" , \"a]b\" ) ; assert_true_regexp ( \"a[\\\\\\\\]]b\" , \"a]b\" , \"a]b\" ) ; assert_true_regexp ( \"a[^bc]d\" , \"aed\" , \"aed\" ) ; assert_false_regexp ( \"a[^bc]d\" , \"abd\" ) ; assert_true_regexp ( \"a[^-b]c\" , \"adc\" , \"adc\" ) ; assert_false_regexp ( \"a[^-b]c\" , \"a-c\" ) ; assert_false_regexp ( \"a[^]b]c\" , \"a]c\" ) ; assert_true_regexp ( \"a[^]b]c\" , \"adc\" , \"adc\" ) ; assert_true_regexp ( \"[^ab]*\" , \"cde\" , \"cde\" ) ; assert_regexp_syntax_error ( \")(\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a<S2SV_blank>b\" , \"a<S2SV_blank>b\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\tb\" , \"a\\\\tb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\rb\" , \"a\\\\rb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\nb\" , \"a\\\\nb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\vb\" , \"a\\\\vb\" ) ; assert_true_regexp ( \"a\\\\\\\\sb\" , \"a\\\\fb\" , \"a\\\\fb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a<S2SV_blank>b\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\tb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\rb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\nb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\vb\" ) ; assert_false_regexp ( \"a\\\\\\\\Sb\" , \"a\\\\fb\" ) ; assert_true_regexp ( \"\\\\\\\\n\\\\\\\\r\\\\\\\\t\\\\\\\\f\\\\\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" ) ; assert_true_regexp ( \"[\\\\\\\\n][\\\\\\\\r][\\\\\\\\t][\\\\\\\\f][\\\\\\\\a]\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" , \"\\\\n\\\\r\\\\t\\\\f\\\\a\" ) ; assert_true_regexp ( \"\\\\\\\\x01\\\\\\\\x02\\\\\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" ) ; assert_true_regexp ( \"[\\\\\\\\x01-\\\\\\\\x03]+\" , \"\\\\x01\\\\x02\\\\x03\" , \"\\\\x01\\\\x02\\\\x03\" ) ; assert_false_regexp ( \"[\\\\\\\\x00-\\\\\\\\x02]+\" , \"\\\\x03\\\\x04\\\\x05\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D]\" , \"]\" , \"]\" ) ; assert_true_regexp ( \"[\\\\\\\\0x5A-\\\\\\\\x5D]\" , \"\\\\x5B\" , \"\\\\x5B\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"[\\\\\\\\x5C-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"[\\\\\\\\x5D-\\\\\\\\x5F]\" , \"\\\\x5E\" , \"\\\\x5E\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"a_c\" , \"a_c\" ) ; assert_true_regexp ( \"a\\\\\\\\wc\" , \"a0c\" , \"a0c\" ) ; assert_false_regexp ( \"a\\\\\\\\wc\" , \"a*c\" ) ; assert_true_regexp ( \"\\\\\\\\w+\" , \"--ab_cd0123--\" , \"ab_cd0123\" ) ; assert_true_regexp ( \"[\\\\\\\\w]+\" , \"--ab_cd0123--\" , \"ab_cd0123\" ) ; assert_true_regexp ( \"\\\\\\\\D+\" , \"1234abc5678\" , \"abc\" ) ; assert_true_regexp ( \"[\\\\\\\\d]+\" , \"0123456789\" , \"0123456789\" ) ; assert_true_regexp ( \"[\\\\\\\\D]+\" , \"1234abc5678\" , \"abc\" ) ; assert_true_regexp ( \"[\\\\\\\\da-fA-F]+\" , \"123abc\" , \"123abc\" ) ; assert_false_regexp ( \"^(ab|cd)e\" , \"abcde\" ) ; assert_true_regexp ( \"(abc|)ef\" , \"abcdef\" , \"ef\" ) ; assert_true_regexp ( \"(abc|)ef\" , \"abcef\" , \"abcef\" ) ; assert_true_regexp ( \"\\\\\\\\babc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"abc\\\\\\\\b\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"\\\\\\\\babc\" , \"1abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\b\" , \"abc1\" ) ; assert_true_regexp ( \"abc\\\\\\\\s\\\\\\\\b\" , \"abc<S2SV_blank>x\" , \"abc<S2SV_blank>\" ) ; assert_false_regexp ( \"abc\\\\\\\\s\\\\\\\\b\" , \"abc<S2SV_blank><S2SV_blank>\" ) ; assert_true_regexp ( \"\\\\\\\\babc\\\\\\\\b\" , \"<S2SV_blank>abc<S2SV_blank>\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"<S2SV_blank>abc<S2SV_blank>\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"abcd\" , \"bcd\" ) ; assert_true_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\" , \"abcd\" , \"abc\" ) ; assert_false_regexp ( \"\\\\\\\\b\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\b\" , \"abcd\" ) ; assert_false_regexp ( \"\\\\\\\\Babc\" , \"abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\B\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\Babc\" , \"1abc\" , \"abc\" ) ; assert_true_regexp ( \"abc\\\\\\\\B\" , \"abc1\" , \"abc\" ) ; assert_false_regexp ( \"abc\\\\\\\\s\\\\\\\\B\" , \"abc<S2SV_blank>x\" ) ; assert_true_regexp ( \"abc\\\\\\\\s\\\\\\\\B\" , \"abc<S2SV_blank><S2SV_blank>\" , \"abc<S2SV_blank>\" ) ; assert_true_regexp ( \"\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\B\" , \"abcd\" , \"abc\" ) ; assert_true_regexp ( \"\\\\\\\\B\\\\\\\\w\\\\\\\\w\\\\\\\\w\" , \"abcd\" , \"bcd\" ) ; assert_false_regexp ( \"\\\\\\\\B\\\\\\\\w\\\\\\\\w\\\\\\\\w\\\\\\\\B\" , \"abcd\" ) ; assert_regexp_syntax_error ( \"(|abc)ef\" ) ; assert_true_regexp ( \"((a)(b)c)(d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"(a|b)c*d\" , \"abcd\" , \"bcd\" ) ; assert_true_regexp ( \"(ab|ab*)bc\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"abc\" , \"abc\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"ac\" , \"ac\" ) ; assert_true_regexp ( \"a([bc]*)c*\" , \"a\" , \"a\" ) ; assert_true_regexp ( \"a([bc]*)(c*d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a([bc]+)(c*d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a([bc]*)(c+d)\" , \"abcd\" , \"abcd\" ) ; assert_true_regexp ( \"a[bcd]*dcdcde\" , \"adcdcde\" , \"adcdcde\" ) ; assert_false_regexp ( \"a[bcd]+dcdcde\" , \"adcdcde\" ) ; assert_true_regexp ( \"\\\\\\\\((.*),<S2SV_blank>(.*)\\\\\\\\)\" , \"(a,<S2SV_blank>b)\" , \"(a,<S2SV_blank>b)\" ) ; assert_true_regexp ( \"abc|123$\" , \"abcx\" , \"abc\" ) ; assert_false_regexp ( \"abc|123$\" , \"123x\" ) ; assert_true_regexp ( \"abc|^123\" , \"123\" , \"123\" ) ; assert_false_regexp ( \"abc|^123\" , \"x123\" ) ; assert_true_regexp ( \"^abc$\" , \"abc\" , \"abc\" ) ; assert_false_regexp ( \"^abc$\" , \"abcc\" ) ; assert_true_regexp ( \"^abc\" , \"abcc\" , \"abc\" ) ; assert_false_regexp ( \"^abc$\" , \"aabc\" ) ; assert_false_regexp ( \"abc^\" , \"abc\" ) ; assert_false_regexp ( \"ab^c\" , \"abc\" ) ; assert_false_regexp ( \"a^bcdef\" , \"abcdef\" ) assert_true_regexp ( \"abc$\" , \"aabc\" , \"abc\" ) ; assert_false_regexp ( \"$abc\" , \"abc\" ) ; assert_true_regexp ( \"(a|a$)bcd\" , \"abcd\" , \"abcd\" ) ; assert_false_regexp ( \"(a$|a$)bcd\" , \"abcd\" ) ; assert_false_regexp ( \"(abc$|ab$)\" , \"abcd\" ) ; assert_true_regexp ( \"^a(bc+|b[eh])g|.h$\" , \"abhg\" , \"abhg\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"effgz\" , \"effgz\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"ij\" , \"ij\" ) ; assert_false_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"effg\" ) ; assert_false_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"bcdd\" ) ; assert_true_regexp ( \"(bc+d$|ef*g.|h?i(j|k))\" , \"reffgz\" , \"effgz\" ) ; assert_true_regexp ( \"whatever|<S2SV_blank><S2SV_blank><S2SV_blank>x.<S2SV_blank><S2SV_blank><S2SV_blank>x\" , \"<S2SV_blank><S2SV_blank><S2SV_blank>xy<S2SV_blank><S2SV_blank><S2SV_blank>x\" , \"<S2SV_blank><S2SV_blank><S2SV_blank>xy<S2SV_blank><S2SV_blank><S2SV_blank>x\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\x0\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\x\" ) ; assert_regexp_syntax_error ( \"x{0,0}\" ) ; assert_regexp_syntax_error ( \"x{0}\" ) ; assert_regexp_syntax_error ( \"\\\\\\\\xxy\" ) ; assert_error ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/a\\\\\\\\/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , ERROR_SYNTAX_ERROR ) ; assert_error ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/[a\\\\\\\\/<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , ERROR_SYNTAX_ERROR ) ; assert_true_rule_blob ( <S2SV_StartBug> \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/MZ.{300,}t/<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>317<S2SV_blank>}\" , <S2SV_EndBug> PE32_FILE ) ; assert_true_rule_blob ( <S2SV_StartBug> \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/MZ.{300,}?t/<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>314<S2SV_blank>}\" , <S2SV_EndBug> PE32_FILE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"a\\\\0x\\\\0x\\\\0b\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"\\\\0a\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"\\\\ta\\\\0b\\\\0c\\\\0\" ) ; assert_false_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"x\\\\0a\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\babc/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"x\\\\ta\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0\\\\t\" ) ; assert_false_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0x\\\\0\" ) ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/abc\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"a\\\\0b\\\\0c\\\\0b\\\\t\" ) ; assert_false_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/\\\\\\\\b/<S2SV_blank>wide<S2SV_blank>condition:<S2SV_blank>$a<S2SV_blank>}\" , \"abc\" ) ; <S2SV_ModStart> ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/MZ.{300,}t/<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>317<S2SV_blank>}\" <S2SV_ModEnd> , PE32_FILE ) <S2SV_ModStart> ; assert_true_rule_blob ( \"rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>strings:<S2SV_blank>$a<S2SV_blank>=<S2SV_blank>/MZ.{300,}?t/<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>!a<S2SV_blank>==<S2SV_blank>314<S2SV_blank>}\" <S2SV_ModEnd> , PE32_FILE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> static int jas_iccputsint ( jas_stream_t * out , int n , longlong val ) <S2SV_EndBug> { <S2SV_StartBug> ulonglong tmp ; <S2SV_EndBug> tmp = ( val < 0 ) ? ( abort ( ) , 0 ) : val ; return jas_iccputuint ( out , n , tmp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int n , jas_longlong <S2SV_ModEnd> val ) { <S2SV_ModStart> val ) { jas_ulonglong <S2SV_ModEnd> tmp ; tmp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 static int __jfs_set_acl ( tid_t tid , struct inode * inode , int type , struct posix_acl * acl ) { char * ea_name ; int rc ; int size = 0 ; char * value = NULL ; switch ( type ) { case ACL_TYPE_ACCESS : ea_name = XATTR_NAME_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> rc = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( rc < 0 ) <S2SV_StartBug> return rc ; <S2SV_EndBug> inode -> i_ctime = CURRENT_TIME ; mark_inode_dirty ( inode ) ; if ( rc == 0 ) acl = NULL ; } break ; case ACL_TYPE_DEFAULT : ea_name = XATTR_NAME_POSIX_ACL_DEFAULT ; break ; default : return - EINVAL ; } if ( acl ) { size = posix_acl_xattr_size ( acl -> a_count ) ; value = kmalloc ( size , GFP_KERNEL ) ; if ( ! value ) return - ENOMEM ; rc = posix_acl_to_xattr ( & init_user_ns , acl , value , size ) ; if ( rc < 0 ) goto out ; } rc = __jfs_setxattr ( tid , inode , ea_name , value , size , 0 ) ; out : kfree ( value ) ; if ( ! rc ) set_cached_acl ( inode , type , acl ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { rc = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( rc ) return rc ; inode -> i_ctime = CURRENT_TIME ; mark_inode_dirty ( inode ) ; } break ; case ACL_TYPE_DEFAULT : ea_name = XATTR_NAME_POSIX_ACL_DEFAULT ; break ; default : return - EINVAL ; } if ( acl ) { size = posix_acl_xattr_size ( acl -> a_count ) ; value = kmalloc ( size , GFP_KERNEL ) ; if ( ! value ) return - ENOMEM ; rc = posix_acl_to_xattr ( & init_user_ns , acl , value , size <S2SV_ModStart> < 0 ) <S2SV_ModEnd> goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 static int jpc_pi_nextcprl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; uint_fast32_t trx0 ; uint_fast32_t try0 ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> prgvolfirst = 0 ; } for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < JAS_CAST ( int , pchg -> compnoend ) && pi -> compno < pi -> numcomps ; ++ pi -> compno , ++ pi -> picomp ) { <S2SV_StartBug> pirlvl = pi -> picomp -> pirlvls ; <S2SV_EndBug> pi -> xstep = pi -> picomp -> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls - 1 ) ) ; pi -> ystep = pi -> picomp -> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcheightexpn + pi -> picomp -> numrlvls - 1 ) ) ; for ( rlvlno = 1 , pirlvl = & pi -> picomp -> pirlvls [ 1 ] ; rlvlno < pi -> picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { pi -> xstep = JAS_MIN ( pi -> xstep , pi -> picomp -> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls - rlvlno - 1 ) ) ) ; pi -> ystep = JAS_MIN ( pi -> ystep , pi -> picomp -> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << ( pirlvl -> prcheightexpn + pi -> picomp -> numrlvls - rlvlno - 1 ) ) ) ; } for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> rlvlno = pchg -> rlvlnostart , pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; pi -> rlvlno < pi -> picomp -> numrlvls && pi -> rlvlno < pchg -> rlvlnoend ; ++ pi -> rlvlno , ++ pi -> pirlvl ) { if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; <S2SV_StartBug> if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( 1 << rpx ) ) ) || <S2SV_EndBug> ! ( pi -> x % ( pi -> picomp -> hsamp << rpx ) ) ) && <S2SV_StartBug> ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( 1 << rpy ) ) ) || <S2SV_EndBug> ! ( pi -> y % ( pi -> picomp -> vsamp << rpy ) ) ) ) { prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pirlvls ; if ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 || pirlvl -> prcheightexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 ) { return - 1 ; } <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpx ) <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpy )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-24369\n\n```\nCWE-476 <S2SV_StartBug> static int changedline ( const Proto * p , int oldpc , int newpc ) { <S2SV_EndBug> while ( oldpc ++ < newpc ) { if ( p -> lineinfo [ oldpc ] != 0 ) return ( luaG_getfuncline ( p , oldpc - 1 ) != luaG_getfuncline ( p , newpc ) ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> newpc ) { if ( p -> lineinfo == NULL ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9717\n\n```\nCWE-284 static void umount_tree ( struct mount * mnt , enum umount_tree_flags how ) { LIST_HEAD ( tmp_list ) ; struct mount * p ; if ( how & UMOUNT_PROPAGATE ) propagate_mount_unlock ( mnt ) ; for ( p = mnt ; p ; p = next_mnt ( p , mnt ) ) { p -> mnt . mnt_flags |= MNT_UMOUNT ; list_move ( & p -> mnt_list , & tmp_list ) ; } list_for_each_entry ( p , & tmp_list , mnt_list ) { list_del_init ( & p -> mnt_child ) ; } if ( how & UMOUNT_PROPAGATE ) propagate_umount ( & tmp_list ) ; while ( ! list_empty ( & tmp_list ) ) { <S2SV_StartBug> p = list_first_entry ( & tmp_list , struct mount , mnt_list ) ; <S2SV_EndBug> list_del_init ( & p -> mnt_expire ) ; list_del_init ( & p -> mnt_list ) ; __touch_mnt_namespace ( p -> mnt_ns ) ; p -> mnt_ns = NULL ; if ( how & UMOUNT_SYNC ) p -> mnt . mnt_flags |= MNT_SYNC_UMOUNT ; <S2SV_StartBug> pin_insert_group ( & p -> mnt_umount , & p -> mnt_parent -> mnt , & unmounted ) ; <S2SV_EndBug> if ( mnt_has_parent ( p ) ) { mnt_add_count ( p -> mnt_parent , - 1 ) ; <S2SV_StartBug> umount_mnt ( p ) ; <S2SV_EndBug> } <S2SV_StartBug> change_mnt_propagation ( p , MS_PRIVATE ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { bool disconnect ; <S2SV_ModStart> |= MNT_SYNC_UMOUNT ; disconnect = ! IS_MNT_LOCKED_AND_LAZY ( p ) ; <S2SV_ModStart> -> mnt , disconnect ? & unmounted : NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> 1 ) ; if ( ! disconnect ) { list_add_tail ( & p -> mnt_child , & p -> mnt_parent -> mnt_mounts ) ; } else { <S2SV_ModStart> ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_frame ( vpx_codec_ctx_t * codec , <S2SV_EndBug> vpx_image_t * img , int frame_index , int flags , <S2SV_StartBug> VpxVideoWriter * writer ) { <S2SV_EndBug> vpx_codec_iter_t iter = NULL ; const vpx_codec_cx_pkt_t * pkt = NULL ; const vpx_codec_err_t res = vpx_codec_encode ( codec , img , frame_index , 1 , flags , VPX_DL_GOOD_QUALITY ) ; if ( res != VPX_CODEC_OK ) die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame\" ) ; <S2SV_StartBug> while ( ( pkt = vpx_codec_get_cx_data ( codec , & iter ) ) != NULL ) { <S2SV_EndBug> if ( pkt -> kind == VPX_CODEC_CX_FRAME_PKT ) { const int keyframe = ( pkt -> data . frame . flags & VPX_FRAME_IS_KEY ) != 0 ; if ( ! vpx_video_writer_write_frame ( writer , pkt -> data . frame . buf , pkt -> data . frame . sz , pkt -> data . frame . pts ) ) { die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>write<S2SV_blank>compressed<S2SV_blank>frame\" ) ; } printf ( keyframe ? \"K\" : \".\" ) ; fflush ( stdout ) ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> encode_frame ( vpx_codec_ctx_t <S2SV_ModStart> writer ) { int got_pkts = 0 ; <S2SV_ModStart> NULL ) { got_pkts = 1 ; <S2SV_ModStart> ; } } return got_pkts ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7534\n\n```\nCWE-125 static void ImportCbYCrYQuantum ( const Image * image , QuantumInfo * quantum_info , const MagickSizeType number_pixels , const unsigned char * magick_restrict p , Quantum * magick_restrict q , ExceptionInfo * exception ) { QuantumAny range ; register ssize_t x ; unsigned int pixel ; assert ( image != ( Image * ) NULL ) ; assert ( image -> signature == MagickCoreSignature ) ; switch ( quantum_info -> depth ) { case 10 : { Quantum cbcr [ 4 ] ; pixel = 0 ; if ( quantum_info -> pack == MagickFalse ) { register ssize_t i ; size_t quantum ; ssize_t n ; n = 0 ; quantum = 0 ; <S2SV_StartBug> for ( x = 0 ; x < ( ssize_t ) number_pixels ; x += 2 ) <S2SV_EndBug> { for ( i = 0 ; i < 4 ; i ++ ) { switch ( n % 3 ) { case 0 : { p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; quantum = ( size_t ) ( ScaleShortToQuantum ( ( unsigned short ) ( ( ( pixel >> 22 ) & 0x3ff ) << 6 ) ) ) ; break ; } case 1 : { quantum = ( size_t ) ( ScaleShortToQuantum ( ( unsigned short ) ( ( ( pixel >> 12 ) & 0x3ff ) << 6 ) ) ) ; break ; } case 2 : { quantum = ( size_t ) ( ScaleShortToQuantum ( ( unsigned short ) ( ( ( pixel >> 2 ) & 0x3ff ) << 6 ) ) ) ; break ; } } cbcr [ i ] = ( Quantum ) ( quantum ) ; n ++ ; } p += quantum_info -> pad ; SetPixelRed ( image , cbcr [ 1 ] , q ) ; SetPixelGreen ( image , cbcr [ 0 ] , q ) ; SetPixelBlue ( image , cbcr [ 2 ] , q ) ; q += GetPixelChannels ( image ) ; SetPixelRed ( image , cbcr [ 3 ] , q ) ; SetPixelGreen ( image , cbcr [ 0 ] , q ) ; SetPixelBlue ( image , cbcr [ 2 ] , q ) ; q += GetPixelChannels ( image ) ; } break ; } } default : { range = GetQuantumRange ( quantum_info -> depth ) ; for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelRed ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelGreen ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; x += 4 <S2SV_ModEnd> ) { for\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-26247\n\n```\nCWE-611 <S2SV_StartBug> static VALUE from_document ( VALUE klass , VALUE document ) <S2SV_EndBug> { xmlDocPtr doc ; xmlRelaxNGParserCtxtPtr ctx ; xmlRelaxNGPtr schema ; VALUE errors ; VALUE rb_schema ; Data_Get_Struct ( document , xmlDoc , doc ) ; doc = doc -> doc ; ctx = xmlRelaxNGNewDocParserCtxt ( doc ) ; errors = rb_ary_new ( ) ; xmlSetStructuredErrorFunc ( ( void * ) errors , Nokogiri_error_array_pusher ) ; # ifdef HAVE_XMLRELAXNGSETPARSERSTRUCTUREDERRORS xmlRelaxNGSetParserStructuredErrors ( ctx , Nokogiri_error_array_pusher , ( void * ) errors ) ; # endif schema = xmlRelaxNGParse ( ctx ) ; xmlSetStructuredErrorFunc ( NULL , NULL ) ; xmlRelaxNGFreeParserCtxt ( ctx ) ; if ( NULL == schema ) { xmlErrorPtr error = xmlGetLastError ( ) ; if ( error ) Nokogiri_error_raise ( NULL , error ) ; else rb_raise ( rb_eRuntimeError , \"Could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>document\" ) ; return Qnil ; } rb_schema = Data_Wrap_Struct ( klass , 0 , dealloc , schema ) ; rb_iv_set ( rb_schema , \"@errors\" , errors ) ; <S2SV_StartBug> return rb_schema ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VALUE from_document ( int argc , VALUE * argv , VALUE klass ) { VALUE document ; VALUE parse_options ; xmlDocPtr doc ; xmlRelaxNGParserCtxtPtr ctx ; xmlRelaxNGPtr schema ; VALUE errors ; VALUE rb_schema ; int scanned_args = 0 ; scanned_args = rb_scan_args ( argc , argv , \"11\" , & document , & parse_options ) ; Data_Get_Struct ( document , xmlDoc , doc ) ; doc = doc -> doc ; if ( scanned_args == 1 ) { parse_options = rb_const_get ( rb_const_get ( mNokogiriXml , rb_intern ( \"ParseOptions\" ) ) , rb_intern ( \"DEFAULT_SCHEMA\" ) ) ; } <S2SV_ModEnd> ctx = xmlRelaxNGNewDocParserCtxt <S2SV_ModStart> errors ) ; rb_iv_set ( rb_schema , \"@parse_options\" , parse_options ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0045\n\n```\nCWE-000 static int em_syscall ( struct x86_emulate_ctxt * ctxt ) { struct x86_emulate_ops * ops = ctxt -> ops ; struct desc_struct cs , ss ; u64 msr_data ; u16 cs_sel , ss_sel ; u64 efer = 0 ; if ( ctxt -> mode == X86EMUL_MODE_REAL || ctxt -> mode == X86EMUL_MODE_VM86 ) return emulate_ud ( ctxt ) ; <S2SV_StartBug> ops -> get_msr ( ctxt , MSR_EFER , & efer ) ; <S2SV_EndBug> <S2SV_StartBug> setup_syscalls_segments ( ctxt , & cs , & ss ) ; <S2SV_EndBug> ops -> get_msr ( ctxt , MSR_STAR , & msr_data ) ; msr_data >>= 32 ; cs_sel = ( u16 ) ( msr_data & 0xfffc ) ; ss_sel = ( u16 ) ( msr_data + 8 ) ; if ( efer & EFER_LMA ) { cs . d = 0 ; cs . l = 1 ; } ops -> set_segment ( ctxt , cs_sel , & cs , 0 , VCPU_SREG_CS ) ; ops -> set_segment ( ctxt , ss_sel , & ss , 0 , VCPU_SREG_SS ) ; ctxt -> regs [ VCPU_REGS_RCX ] = ctxt -> _eip ; if ( efer & EFER_LMA ) { # ifdef CONFIG_X86_64 ctxt -> regs [ VCPU_REGS_R11 ] = ctxt -> eflags & ~ EFLG_RF ; ops -> get_msr ( ctxt , ctxt -> mode == X86EMUL_MODE_PROT64 ? MSR_LSTAR : MSR_CSTAR , & msr_data ) ; ctxt -> _eip = msr_data ; ops -> get_msr ( ctxt , MSR_SYSCALL_MASK , & msr_data ) ; ctxt -> eflags &= ~ ( msr_data | EFLG_RF ) ; # endif } else { ops -> get_msr ( ctxt , MSR_STAR , & msr_data ) ; ctxt -> _eip = ( u32 ) msr_data ; ctxt -> eflags &= ~ ( EFLG_VM | EFLG_IF | EFLG_RF ) ; } return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt ) ; if ( ! ( em_syscall_is_enabled ( ctxt ) ) ) return emulate_ud ( ctxt ) ; <S2SV_ModStart> , & ss ) ; if ( ! ( efer & EFER_SCE ) ) return emulate_ud ( ctxt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31256\n\n```\nCWE-119 GF_Err stbl_GetSampleInfos ( GF_SampleTableBox * stbl , u32 sampleNumber , u64 * offset , u32 * chunkNumber , u32 * descIndex , GF_StscEntry * * out_ent ) { GF_Err e ; u32 i , k , offsetInChunk , size , chunk_num ; GF_ChunkOffsetBox * stco ; GF_ChunkLargeOffsetBox * co64 ; GF_StscEntry * ent ; ( * offset ) = 0 ; ( * chunkNumber ) = ( * descIndex ) = 0 ; if ( out_ent ) ( * out_ent ) = NULL ; if ( ! stbl || ! sampleNumber ) return GF_BAD_PARAM ; if ( ! stbl -> ChunkOffset || ! stbl -> SampleToChunk || ! stbl -> SampleSize ) return GF_ISOM_INVALID_FILE ; if ( stbl -> SampleSize && stbl -> SampleToChunk -> nb_entries == stbl -> SampleSize -> sampleCount ) { ent = & stbl -> SampleToChunk -> entries [ sampleNumber - 1 ] ; if ( ! ent ) return GF_BAD_PARAM ; ( * descIndex ) = ent -> sampleDescriptionIndex ; ( * chunkNumber ) = sampleNumber ; if ( out_ent ) * out_ent = ent ; if ( stbl -> ChunkOffset -> type == GF_ISOM_BOX_TYPE_STCO ) { stco = ( GF_ChunkOffsetBox * ) stbl -> ChunkOffset ; if ( ! stco -> offsets ) return GF_ISOM_INVALID_FILE ; <S2SV_StartBug> ( * offset ) = ( u64 ) stco -> offsets [ sampleNumber - 1 ] ; <S2SV_EndBug> } else { co64 = ( GF_ChunkLargeOffsetBox * ) stbl -> ChunkOffset ; <S2SV_StartBug> if ( ! co64 -> offsets ) return GF_ISOM_INVALID_FILE ; <S2SV_EndBug> ( * offset ) = co64 -> offsets [ sampleNumber - 1 ] ; } return GF_OK ; } if ( stbl -> SampleToChunk -> firstSampleInCurrentChunk && ( stbl -> SampleToChunk -> firstSampleInCurrentChunk <= sampleNumber ) ) { i = stbl -> SampleToChunk -> currentIndex ; ent = & stbl -> SampleToChunk -> entries [ stbl -> SampleToChunk -> currentIndex ] ; GetGhostNum ( ent , i , stbl -> SampleToChunk -> nb_entries , stbl ) ; k = stbl -> SampleToChunk -> currentChunk ; } else { i = 0 ; stbl -> SampleToChunk -> currentIndex = 0 ; stbl -> SampleToChunk -> currentChunk = 1 ; stbl -> SampleToChunk -> ghostNumber = 1 ; stbl -> SampleToChunk -> firstSampleInCurrentChunk = 1 ; ent = & stbl -> SampleToChunk -> entries [ 0 ] ; GetGhostNum ( ent , 0 , stbl -> SampleToChunk -> nb_entries , stbl ) ; k = stbl -> SampleToChunk -> currentChunk ; } for ( ; i < stbl -> SampleToChunk -> nb_entries ; i ++ ) { assert ( stbl -> SampleToChunk -> firstSampleInCurrentChunk <= sampleNumber ) ; if ( k > stbl -> SampleToChunk -> ghostNumber ) { return GF_ISOM_INVALID_FILE ; } u32 max_chunks_in_entry = stbl -> SampleToChunk -> ghostNumber - k ; u32 nb_chunks_for_sample = sampleNumber - stbl -> SampleToChunk -> firstSampleInCurrentChunk ; if ( ent -> samplesPerChunk ) nb_chunks_for_sample /= ent -> samplesPerChunk ; if ( ( nb_chunks_for_sample <= max_chunks_in_entry ) && ( stbl -> SampleToChunk -> firstSampleInCurrentChunk + ( nb_chunks_for_sample + 1 ) * ent -> samplesPerChunk > sampleNumber ) ) { stbl -> SampleToChunk -> firstSampleInCurrentChunk += nb_chunks_for_sample * ent -> samplesPerChunk ; stbl -> SampleToChunk -> currentChunk += nb_chunks_for_sample ; goto sample_found ; } max_chunks_in_entry += 1 ; stbl -> SampleToChunk -> firstSampleInCurrentChunk += max_chunks_in_entry * ent -> samplesPerChunk ; stbl -> SampleToChunk -> currentChunk += max_chunks_in_entry ; if ( i + 1 != stbl -> SampleToChunk -> nb_entries ) { ent = & stbl -> SampleToChunk -> entries [ i + 1 ] ; GetGhostNum ( ent , i + 1 , stbl -> SampleToChunk -> nb_entries , stbl ) ; stbl -> SampleToChunk -> currentIndex = i + 1 ; stbl -> SampleToChunk -> currentChunk = 1 ; k = 1 ; } } return GF_ISOM_INVALID_FILE ; sample_found : ( * descIndex ) = ent -> sampleDescriptionIndex ; ( * chunkNumber ) = chunk_num = ent -> firstChunk + stbl -> SampleToChunk -> currentChunk - 1 ; if ( out_ent ) * out_ent = ent ; if ( ! * chunkNumber ) return GF_ISOM_INVALID_FILE ; offsetInChunk = 0 ; if ( stbl -> SampleSize && stbl -> SampleSize -> sampleSize ) { u32 diff = sampleNumber - stbl -> SampleToChunk -> firstSampleInCurrentChunk ; offsetInChunk += diff * stbl -> SampleSize -> sampleSize ; } else if ( ( stbl -> r_last_chunk_num == chunk_num ) && ( stbl -> r_last_sample_num == sampleNumber ) ) { offsetInChunk = stbl -> r_last_offset_in_chunk ; } else if ( ( stbl -> r_last_chunk_num == chunk_num ) && ( stbl -> r_last_sample_num + 1 == sampleNumber ) ) { e = stbl_GetSampleSize ( stbl -> SampleSize , stbl -> r_last_sample_num , & size ) ; if ( e ) return e ; stbl -> r_last_offset_in_chunk += size ; stbl -> r_last_sample_num = sampleNumber ; offsetInChunk = stbl -> r_last_offset_in_chunk ; } else { for ( i = stbl -> SampleToChunk -> firstSampleInCurrentChunk ; i < sampleNumber ; i ++ ) { e = stbl_GetSampleSize ( stbl -> SampleSize , i , & size ) ; if ( e ) return e ; offsetInChunk += size ; } stbl -> r_last_chunk_num = chunk_num ; stbl -> r_last_sample_num = sampleNumber ; stbl -> r_last_offset_in_chunk = offsetInChunk ; } if ( stbl -> ChunkOffset -> type == GF_ISOM_BOX_TYPE_STCO ) { stco = ( GF_ChunkOffsetBox * ) stbl -> ChunkOffset ; if ( stco -> nb_entries < ( * chunkNumber ) ) return GF_ISOM_INVALID_FILE ; ( * offset ) = ( u64 ) stco -> offsets [ ( * chunkNumber ) - 1 ] + ( u64 ) offsetInChunk ; } else { co64 = ( GF_ChunkLargeOffsetBox * ) stbl -> ChunkOffset ; if ( co64 -> nb_entries < ( * chunkNumber ) ) return GF_ISOM_INVALID_FILE ; ( * offset ) = co64 -> offsets [ ( * chunkNumber ) - 1 ] + ( u64 ) offsetInChunk ; } return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return GF_ISOM_INVALID_FILE ; if ( stco -> nb_entries < sampleNumber ) return GF_ISOM_INVALID_FILE ; <S2SV_ModStart> co64 -> offsets ) return GF_ISOM_INVALID_FILE ; if ( co64 -> nb_entries < sampleNumber\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9075\n\n```\nCWE-000 static struct sock * sctp_v6_create_accept_sk ( struct sock * sk , struct sctp_association * asoc , bool kern ) { struct sock * newsk ; struct ipv6_pinfo * newnp , * np = inet6_sk ( sk ) ; struct sctp6_sock * newsctp6sk ; struct ipv6_txoptions * opt ; newsk = sk_alloc ( sock_net ( sk ) , PF_INET6 , GFP_KERNEL , sk -> sk_prot , kern ) ; if ( ! newsk ) goto out ; sock_init_data ( NULL , newsk ) ; sctp_copy_sock ( newsk , sk , asoc ) ; sock_reset_flag ( sk , SOCK_ZAPPED ) ; newsctp6sk = ( struct sctp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newsctp6sk -> inet6 ; sctp_sk ( newsk ) -> v4mapped = sctp_sk ( sk ) -> v4mapped ; newnp = inet6_sk ( newsk ) ; <S2SV_StartBug> memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; <S2SV_EndBug> rcu_read_lock ( ) ; opt = rcu_dereference ( np -> opt ) ; if ( opt ) opt = ipv6_dup_options ( newsk , opt ) ; RCU_INIT_POINTER ( newnp -> opt , opt ) ; rcu_read_unlock ( ) ; sctp_v6_to_sk_daddr ( & asoc -> peer . primary_addr , newsk ) ; newsk -> sk_v6_rcv_saddr = sk -> sk_v6_rcv_saddr ; sk_refcnt_debug_inc ( newsk ) ; if ( newsk -> sk_prot -> init ( newsk ) ) { sk_common_release ( newsk ) ; newsk = NULL ; } out : return newsk ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ipv6_pinfo ) ) ; newnp -> ipv6_mc_list = NULL ; newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 <S2SV_StartBug> static void send ( node_t * node , node_t * child , byte * fout ) { <S2SV_EndBug> if ( node -> parent ) { <S2SV_StartBug> send ( node -> parent , node , fout ) ; <S2SV_EndBug> } <S2SV_StartBug> if ( child ) { <S2SV_EndBug> if ( node -> right == child ) { add_bit ( 1 , fout ) ; } else { add_bit ( 0 , fout ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> byte * fout , int maxoffset <S2SV_ModStart> node , fout , maxoffset <S2SV_ModStart> child ) { if ( bloc >= maxoffset ) { bloc = maxoffset + 1 ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void inbound_data_waiting ( void * context ) { eager_reader_t * reader = ( eager_reader_t * ) context ; data_buffer_t * buffer = ( data_buffer_t * ) reader -> allocator -> alloc ( reader -> buffer_size + sizeof ( data_buffer_t ) ) ; if ( ! buffer ) { LOG_ERROR ( \"%s<S2SV_blank>couldn\\'t<S2SV_blank>aquire<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>inbound<S2SV_blank>data<S2SV_blank>buffer.\" , __func__ ) ; return ; } buffer -> length = 0 ; buffer -> offset = 0 ; <S2SV_StartBug> int bytes_read = read ( reader -> inbound_fd , buffer -> data , reader -> buffer_size ) ; <S2SV_EndBug> if ( bytes_read > 0 ) { buffer -> length = bytes_read ; fixed_queue_enqueue ( reader -> buffers , buffer ) ; eventfd_write ( reader -> bytes_available_fd , bytes_read ) ; } else { if ( bytes_read == 0 ) LOG_WARN ( \"%s<S2SV_blank>fd<S2SV_blank>said<S2SV_blank>bytes<S2SV_blank>existed,<S2SV_blank>but<S2SV_blank>none<S2SV_blank>were<S2SV_blank>found.\" , __func__ ) ; else LOG_WARN ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>from<S2SV_blank>file<S2SV_blank>descriptor:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; reader -> allocator -> free ( buffer ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int bytes_read = TEMP_FAILURE_RETRY ( <S2SV_ModStart> reader -> buffer_size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 static void process_blob ( struct rev_info * revs , struct blob * blob , show_object_fn show , struct strbuf * path , const char * name , void * cb_data ) { struct object * obj = & blob -> object ; <S2SV_StartBug> if ( ! revs -> blob_objects ) <S2SV_EndBug> return ; if ( ! obj ) die ( \"bad<S2SV_blank>blob<S2SV_blank>object\" ) ; if ( obj -> flags & ( UNINTERESTING | SEEN ) ) return ; obj -> flags |= SEEN ; <S2SV_StartBug> show ( obj , path , name , cb_data ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> object ; size_t pathlen ; <S2SV_ModStart> |= SEEN ; pathlen = path -> len ; strbuf_addstr ( path , name ) ; <S2SV_ModStart> obj , path -> buf <S2SV_ModEnd> , cb_data ) <S2SV_ModStart> cb_data ) ; strbuf_setlen ( path , pathlen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10210\n\n```\nCWE-476 YY_DECL { yy_state_type yy_current_state ; char * yy_cp , * yy_bp ; int yy_act ; struct yyguts_t * yyg = ( struct yyguts_t * ) yyscanner ; yylval = yylval_param ; if ( ! yyg -> yy_init ) { yyg -> yy_init = 1 ; # ifdef YY_USER_INIT YY_USER_INIT ; # endif if ( ! yyg -> yy_start ) yyg -> yy_start = 1 ; if ( ! yyin ) yyin = stdin ; if ( ! yyout ) yyout = stdout ; if ( ! YY_CURRENT_BUFFER ) { re_yyensure_buffer_stack ( yyscanner ) ; YY_CURRENT_BUFFER_LVALUE = re_yy_create_buffer ( yyin , YY_BUF_SIZE , yyscanner ) ; } re_yy_load_buffer_state ( yyscanner ) ; } { # line 99 \"re_lexer.l\" # line 863 \"re_lexer.c\" while ( 1 ) { yy_cp = yyg -> yy_c_buf_p ; * yy_cp = yyg -> yy_hold_char ; yy_bp = yy_cp ; yy_current_state = yyg -> yy_start ; yy_match : do { YY_CHAR yy_c = yy_ec [ YY_SC_TO_UI ( * yy_cp ) ] ; if ( yy_accept [ yy_current_state ] ) { yyg -> yy_last_accepting_state = yy_current_state ; yyg -> yy_last_accepting_cpos = yy_cp ; } while ( yy_chk [ yy_base [ yy_current_state ] + yy_c ] != yy_current_state ) { yy_current_state = ( int ) yy_def [ yy_current_state ] ; if ( yy_current_state >= 45 ) yy_c = yy_meta [ ( unsigned int ) yy_c ] ; } yy_current_state = yy_nxt [ yy_base [ yy_current_state ] + ( unsigned int ) yy_c ] ; ++ yy_cp ; } while ( yy_current_state != 44 ) ; yy_cp = yyg -> yy_last_accepting_cpos ; yy_current_state = yyg -> yy_last_accepting_state ; yy_find_action : yy_act = yy_accept [ yy_current_state ] ; YY_DO_BEFORE_ACTION ; if ( yy_act != YY_END_OF_BUFFER && yy_rule_can_match_eol [ yy_act ] ) { yy_size_t yyl ; for ( yyl = 0 ; yyl < yyleng ; ++ yyl ) if ( yytext [ yyl ] == '\\\\n' ) do { yylineno ++ ; yycolumn = 0 ; } while ( 0 ) ; } do_action : switch ( yy_act ) { case 0 : * yy_cp = yyg -> yy_hold_char ; yy_cp = yyg -> yy_last_accepting_cpos ; yy_current_state = yyg -> yy_last_accepting_state ; goto yy_find_action ; case 1 : YY_RULE_SETUP # line 101 \"re_lexer.l\" { int hi_bound ; int lo_bound = atoi ( yytext + 1 ) ; char * comma = strchr ( yytext , ',' ) ; if ( comma - yytext == strlen ( yytext ) - 2 ) hi_bound = INT16_MAX ; else hi_bound = atoi ( comma + 1 ) ; if ( hi_bound > INT16_MAX ) { yyerror ( yyscanner , lex_env , \"repeat<S2SV_blank>interval<S2SV_blank>too<S2SV_blank>large\" ) ; yyterminate ( ) ; } if ( hi_bound < lo_bound || hi_bound < 0 || lo_bound < 0 ) { yyerror ( yyscanner , lex_env , \"bad<S2SV_blank>repeat<S2SV_blank>interval\" ) ; yyterminate ( ) ; } yylval -> range = ( hi_bound << 16 ) | lo_bound ; return _RANGE_ ; } YY_BREAK case 2 : YY_RULE_SETUP # line 135 \"re_lexer.l\" { int value = atoi ( yytext + 1 ) ; if ( value > INT16_MAX ) { yyerror ( yyscanner , lex_env , \"repeat<S2SV_blank>interval<S2SV_blank>too<S2SV_blank>large\" ) ; yyterminate ( ) ; } yylval -> range = ( value << 16 ) | value ; return _RANGE_ ; } YY_BREAK case 3 : YY_RULE_SETUP # line 153 \"re_lexer.l\" { BEGIN ( char_class ) ; memset ( LEX_ENV -> class_vector , 0 , 32 ) ; LEX_ENV -> negated_class = TRUE ; } YY_BREAK case 4 : YY_RULE_SETUP # line 162 \"re_lexer.l\" { BEGIN ( char_class ) ; memset ( LEX_ENV -> class_vector , 0 , 32 ) ; LEX_ENV -> negated_class = TRUE ; LEX_ENV -> class_vector [ ']' / 8 ] |= 1 << ']' % 8 ; } YY_BREAK case 5 : YY_RULE_SETUP # line 175 \"re_lexer.l\" { BEGIN ( char_class ) ; memset ( LEX_ENV -> class_vector , 0 , 32 ) ; LEX_ENV -> negated_class = FALSE ; LEX_ENV -> class_vector [ ']' / 8 ] |= 1 << ']' % 8 ; } YY_BREAK case 6 : YY_RULE_SETUP # line 188 \"re_lexer.l\" { BEGIN ( char_class ) ; memset ( LEX_ENV -> class_vector , 0 , 32 ) ; LEX_ENV -> negated_class = FALSE ; } YY_BREAK case 7 : YY_RULE_SETUP # line 198 \"re_lexer.l\" { yylval -> integer = yytext [ 0 ] ; return _CHAR_ ; } YY_BREAK case 8 : YY_RULE_SETUP # line 207 \"re_lexer.l\" { return _WORD_CHAR_ ; } YY_BREAK case 9 : YY_RULE_SETUP # line 212 \"re_lexer.l\" { return _NON_WORD_CHAR_ ; } YY_BREAK case 10 : YY_RULE_SETUP # line 217 \"re_lexer.l\" { return _SPACE_ ; } YY_BREAK case 11 : YY_RULE_SETUP # line 222 \"re_lexer.l\" { return _NON_SPACE_ ; } YY_BREAK case 12 : YY_RULE_SETUP # line 227 \"re_lexer.l\" { return _DIGIT_ ; } YY_BREAK case 13 : YY_RULE_SETUP # line 232 \"re_lexer.l\" { return _NON_DIGIT_ ; } YY_BREAK case 14 : YY_RULE_SETUP # line 237 \"re_lexer.l\" { return _WORD_BOUNDARY_ ; } YY_BREAK case 15 : YY_RULE_SETUP # line 241 \"re_lexer.l\" { return _NON_WORD_BOUNDARY_ ; } YY_BREAK case 16 : YY_RULE_SETUP # line 246 \"re_lexer.l\" { yyerror ( yyscanner , lex_env , \"backreferences<S2SV_blank>are<S2SV_blank>not<S2SV_blank>allowed\" ) ; yyterminate ( ) ; } YY_BREAK case 17 : YY_RULE_SETUP # line 253 \"re_lexer.l\" { uint8_t c ; if ( read_escaped_char ( yyscanner , & c ) ) { yylval -> integer = c ; return _CHAR_ ; } else { <S2SV_StartBug> yyerror ( yyscanner , lex_env , \"unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer\" ) ; <S2SV_EndBug> yyterminate ( ) ; } } YY_BREAK case 18 : YY_RULE_SETUP # line 270 \"re_lexer.l\" { int i ; yylval -> class_vector = ( uint8_t * ) yr_malloc ( 32 ) ; memcpy ( yylval -> class_vector , LEX_ENV -> class_vector , 32 ) ; if ( LEX_ENV -> negated_class ) { for ( i = 0 ; i < 32 ; i ++ ) yylval -> class_vector [ i ] = ~ yylval -> class_vector [ i ] ; } BEGIN ( INITIAL ) ; return _CLASS_ ; } YY_BREAK case 19 : YY_RULE_SETUP # line 291 \"re_lexer.l\" { uint16_t c ; uint8_t start = yytext [ 0 ] ; uint8_t end = yytext [ 2 ] ; if ( start == '\\\\\\\\' ) { start = escaped_char_value ( yytext ) ; if ( yytext [ 1 ] == 'x' ) end = yytext [ 5 ] ; else end = yytext [ 3 ] ; } if ( end == '\\\\\\\\' ) { if ( ! read_escaped_char ( yyscanner , & end ) ) { <S2SV_StartBug> yyerror ( yyscanner , lex_env , \"unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer\" ) ; <S2SV_EndBug> yyterminate ( ) ; } } if ( end < start ) { yyerror ( yyscanner , lex_env , \"bad<S2SV_blank>character<S2SV_blank>range\" ) ; yyterminate ( ) ; } for ( c = start ; c <= end ; c ++ ) { LEX_ENV -> class_vector [ c / 8 ] |= 1 << c % 8 ; } } YY_BREAK case 20 : YY_RULE_SETUP # line 333 \"re_lexer.l\" { int i ; for ( i = 0 ; i < 32 ; i ++ ) LEX_ENV -> class_vector [ i ] |= word_chars [ i ] ; } YY_BREAK case 21 : YY_RULE_SETUP # line 342 \"re_lexer.l\" { int i ; for ( i = 0 ; i < 32 ; i ++ ) LEX_ENV -> class_vector [ i ] |= ~ word_chars [ i ] ; } YY_BREAK case 22 : YY_RULE_SETUP # line 351 \"re_lexer.l\" { LEX_ENV -> class_vector [ '<S2SV_blank>' / 8 ] |= 1 << '<S2SV_blank>' % 8 ; LEX_ENV -> class_vector [ '\\\\t' / 8 ] |= 1 << '\\\\t' % 8 ; } YY_BREAK case 23 : YY_RULE_SETUP # line 358 \"re_lexer.l\" { int i ; for ( i = 0 ; i < 32 ; i ++ ) { if ( i == '<S2SV_blank>' / 8 ) LEX_ENV -> class_vector [ i ] |= ~ ( 1 << '<S2SV_blank>' % 8 ) ; else if ( i == '\\\\t' / 8 ) LEX_ENV -> class_vector [ i ] |= ~ ( 1 << '\\\\t' % 8 ) ; else LEX_ENV -> class_vector [ i ] = 0xFF ; } } YY_BREAK case 24 : YY_RULE_SETUP # line 374 \"re_lexer.l\" { char c ; for ( c = '0' ; c <= '9' ; c ++ ) LEX_ENV -> class_vector [ c / 8 ] |= 1 << c % 8 ; } YY_BREAK case 25 : YY_RULE_SETUP # line 383 \"re_lexer.l\" { int i ; for ( i = 0 ; i < 32 ; i ++ ) { if ( i == 6 ) continue ; if ( i == 7 ) LEX_ENV -> class_vector [ i ] |= 0xFC ; else LEX_ENV -> class_vector [ i ] = 0xFF ; } } YY_BREAK case 26 : YY_RULE_SETUP # line 403 \"re_lexer.l\" { uint8_t c ; if ( read_escaped_char ( yyscanner , & c ) ) { LEX_ENV -> class_vector [ c / 8 ] |= 1 << c % 8 ; } else { <S2SV_StartBug> yyerror ( yyscanner , lex_env , \"unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer\" ) ; <S2SV_EndBug> yyterminate ( ) ; } } YY_BREAK case 27 : YY_RULE_SETUP # line 419 \"re_lexer.l\" { if ( yytext [ 0 ] >= 32 && yytext [ 0 ] < 127 ) { LEX_ENV -> class_vector [ yytext [ 0 ] / 8 ] |= 1 << yytext [ 0 ] % 8 ; } else { yyerror ( yyscanner , lex_env , \"non-ascii<S2SV_blank>character\" ) ; yyterminate ( ) ; } } YY_BREAK case YY_STATE_EOF ( char_class ) : # line 436 \"re_lexer.l\" { yyerror ( yyscanner , lex_env , \"missing<S2SV_blank>terminating<S2SV_blank>]<S2SV_blank>for<S2SV_blank>character<S2SV_blank>class\" ) ; yyterminate ( ) ; } YY_BREAK case 28 : YY_RULE_SETUP # line 445 \"re_lexer.l\" { if ( yytext [ 0 ] >= 32 && yytext [ 0 ] < 127 ) { return yytext [ 0 ] ; } else { yyerror ( yyscanner , lex_env , \"non-ascii<S2SV_blank>character\" ) ; yyterminate ( ) ; } } YY_BREAK case YY_STATE_EOF ( INITIAL ) : # line 459 \"re_lexer.l\" { yyterminate ( ) ; } YY_BREAK case 29 : YY_RULE_SETUP # line 464 \"re_lexer.l\" ECHO ; YY_BREAK # line 1358 \"re_lexer.c\" case YY_END_OF_BUFFER : { int yy_amount_of_matched_text = ( int ) ( yy_cp - yyg -> yytext_ptr ) - 1 ; * yy_cp = yyg -> yy_hold_char ; YY_RESTORE_YY_MORE_OFFSET if ( YY_CURRENT_BUFFER_LVALUE -> yy_buffer_status == YY_BUFFER_NEW ) { yyg -> yy_n_chars = YY_CURRENT_BUFFER_LVALUE -> yy_n_chars ; YY_CURRENT_BUFFER_LVALUE -> yy_input_file = yyin ; YY_CURRENT_BUFFER_LVALUE -> yy_buffer_status = YY_BUFFER_NORMAL ; } if ( yyg -> yy_c_buf_p <= & YY_CURRENT_BUFFER_LVALUE -> yy_ch_buf [ yyg -> yy_n_chars ] ) { yy_state_type yy_next_state ; yyg -> yy_c_buf_p = yyg -> yytext_ptr + yy_amount_of_matched_text ; yy_current_state = yy_get_previous_state ( yyscanner ) ; yy_next_state = yy_try_NUL_trans ( yy_current_state , yyscanner ) ; yy_bp = yyg -> yytext_ptr + YY_MORE_ADJ ; if ( yy_next_state ) { yy_cp = ++ yyg -> yy_c_buf_p ; yy_current_state = yy_next_state ; goto yy_match ; } else { yy_cp = yyg -> yy_last_accepting_cpos ; yy_current_state = yyg -> yy_last_accepting_state ; goto yy_find_action ; } } else switch ( yy_get_next_buffer ( yyscanner ) ) { case EOB_ACT_END_OF_FILE : { yyg -> yy_did_buffer_switch_on_eof = 0 ; if ( re_yywrap ( yyscanner ) ) { yyg -> yy_c_buf_p = yyg -> yytext_ptr + YY_MORE_ADJ ; yy_act = YY_STATE_EOF ( YY_START ) ; goto do_action ; } else { if ( ! yyg -> yy_did_buffer_switch_on_eof ) YY_NEW_FILE ; } break ; } case EOB_ACT_CONTINUE_SCAN : yyg -> yy_c_buf_p = yyg -> yytext_ptr + yy_amount_of_matched_text ; yy_current_state = yy_get_previous_state ( yyscanner ) ; yy_cp = yyg -> yy_c_buf_p ; yy_bp = yyg -> yytext_ptr + YY_MORE_ADJ ; goto yy_match ; case EOB_ACT_LAST_MATCH : yyg -> yy_c_buf_p = & YY_CURRENT_BUFFER_LVALUE -> yy_ch_buf [ yyg -> yy_n_chars ] ; yy_current_state = yy_get_previous_state ( yyscanner ) ; yy_cp = yyg -> yy_c_buf_p ; yy_bp = yyg -> yytext_ptr + YY_MORE_ADJ ; goto yy_find_action ; } break ; } default : YY_FATAL_ERROR ( \"fatal<S2SV_blank>flex<S2SV_blank>scanner<S2SV_blank>internal<S2SV_blank>error--no<S2SV_blank>action<S2SV_blank>found\" ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , lex_env , \"illegal<S2SV_blank>escape<S2SV_blank>sequence\" <S2SV_ModEnd> ) ; yyterminate <S2SV_ModStart> , lex_env , \"illegal<S2SV_blank>escape<S2SV_blank>sequence\" <S2SV_ModEnd> ) ; yyterminate <S2SV_ModStart> , lex_env , \"illegal<S2SV_blank>escape<S2SV_blank>sequence\" <S2SV_ModEnd> ) ; yyterminate\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_setup_key_frame ( VP8_COMP * cpi ) { vp8_default_coef_probs ( & cpi -> common ) ; <S2SV_StartBug> vpx_memcpy ( cpi -> common . fc . mvc , vp8_default_mv_context , sizeof ( vp8_default_mv_context ) ) ; <S2SV_EndBug> { int flag [ 2 ] = { 1 , 1 } ; vp8_build_component_cost_table ( cpi -> mb . mvcost , ( const MV_CONTEXT * ) cpi -> common . fc . mvc , flag ) ; } <S2SV_StartBug> vpx_memcpy ( & cpi -> lfc_a , & cpi -> common . fc , sizeof ( cpi -> common . fc ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & cpi -> lfc_g , & cpi -> common . fc , sizeof ( cpi -> common . fc ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & cpi -> lfc_n , & cpi -> common . fc , sizeof ( cpi -> common . fc ) ) ; <S2SV_EndBug> cpi -> common . filter_level = cpi -> common . base_qindex * 3 / 8 ; if ( cpi -> auto_gold ) cpi -> frames_till_gf_update_due = cpi -> baseline_gf_interval ; else cpi -> frames_till_gf_update_due = DEFAULT_GF_INTERVAL ; cpi -> common . refresh_golden_frame = 1 ; cpi -> common . refresh_alt_ref_frame = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> common ) ; memcpy <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> ) ; } memcpy <S2SV_ModEnd> ( & cpi <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & cpi <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1959\n\n```\nCWE-264 <S2SV_StartBug> static bool new_idmap_permitted ( struct user_namespace * ns , int cap_setid , <S2SV_EndBug> struct uid_gid_map * new_map ) { if ( ( new_map -> nr_extents == 1 ) && ( new_map -> extent [ 0 ] . count == 1 ) ) { u32 id = new_map -> extent [ 0 ] . lower_first ; if ( cap_setid == CAP_SETUID ) { kuid_t uid = make_kuid ( ns -> parent , id ) ; if ( uid_eq ( uid , current_fsuid ( ) ) ) return true ; } else if ( cap_setid == CAP_SETGID ) { kgid_t gid = make_kgid ( ns -> parent , id ) ; if ( gid_eq ( gid , current_fsgid ( ) ) ) return true ; } } if ( ! cap_valid ( cap_setid ) ) return true ; <S2SV_StartBug> if ( ns_capable ( ns -> parent , cap_setid ) ) <S2SV_EndBug> return true ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bool new_idmap_permitted ( const struct file * file , <S2SV_ModStart> , cap_setid ) && file_ns_capable ( file , ns -> parent , cap_setid )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9496\n\n```\nCWE-119 static int sd2_parse_rsrc_fork ( SF_PRIVATE * psf ) { SD2_RSRC rsrc ; int k , marker , error = 0 ; psf_use_rsrc ( psf , SF_TRUE ) ; memset ( & rsrc , 0 , sizeof ( rsrc ) ) ; rsrc . rsrc_len = psf_get_filelen ( psf ) ; psf_log_printf ( psf , \"Resource<S2SV_blank>length<S2SV_blank>:<S2SV_blank>%d<S2SV_blank>(0x%04X)\\\\n\" , rsrc . rsrc_len , rsrc . rsrc_len ) ; if ( rsrc . rsrc_len > SIGNED_SIZEOF ( psf -> header ) ) { rsrc . rsrc_data = calloc ( 1 , rsrc . rsrc_len ) ; rsrc . need_to_free_rsrc_data = SF_TRUE ; } else { rsrc . rsrc_data = psf -> header ; rsrc . need_to_free_rsrc_data = SF_FALSE ; } ; psf_fread ( rsrc . rsrc_data , rsrc . rsrc_len , 1 , psf ) ; psf -> headindex = psf -> headend = rsrc . rsrc_len ; rsrc . data_offset = read_rsrc_int ( & rsrc , 0 ) ; rsrc . map_offset = read_rsrc_int ( & rsrc , 4 ) ; rsrc . data_length = read_rsrc_int ( & rsrc , 8 ) ; rsrc . map_length = read_rsrc_int ( & rsrc , 12 ) ; if ( rsrc . data_offset == 0x51607 && rsrc . map_offset == 0x20000 ) { psf_log_printf ( psf , \"Trying<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>0x52<S2SV_blank>bytes.\\\\n\" ) ; rsrc . data_offset = read_rsrc_int ( & rsrc , 0x52 + 0 ) + 0x52 ; rsrc . map_offset = read_rsrc_int ( & rsrc , 0x52 + 4 ) + 0x52 ; rsrc . data_length = read_rsrc_int ( & rsrc , 0x52 + 8 ) ; rsrc . map_length = read_rsrc_int ( & rsrc , 0x52 + 12 ) ; } ; psf_log_printf ( psf , \"<S2SV_blank><S2SV_blank>data<S2SV_blank>offset<S2SV_blank>:<S2SV_blank>0x%04X\\\\n<S2SV_blank><S2SV_blank>map<S2SV_blank><S2SV_blank>offset<S2SV_blank>:<S2SV_blank>0x%04X\\\\n\" \"<S2SV_blank><S2SV_blank>data<S2SV_blank>length<S2SV_blank>:<S2SV_blank>0x%04X\\\\n<S2SV_blank><S2SV_blank>map<S2SV_blank><S2SV_blank>length<S2SV_blank>:<S2SV_blank>0x%04X\\\\n\" , rsrc . data_offset , rsrc . map_offset , rsrc . data_length , rsrc . map_length ) ; if ( rsrc . data_offset > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>rsrc.data_offset<S2SV_blank>(%d,<S2SV_blank>0x%x)<S2SV_blank>><S2SV_blank>len\\\\n\" , rsrc . data_offset , rsrc . data_offset ) ; error = SFE_SD2_BAD_DATA_OFFSET ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . map_offset > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>rsrc.map_offset<S2SV_blank>><S2SV_blank>len\\\\n\" ) ; error = SFE_SD2_BAD_MAP_OFFSET ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . data_length > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>rsrc.data_length<S2SV_blank>><S2SV_blank>len\\\\n\" ) ; error = SFE_SD2_BAD_DATA_LENGTH ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . map_length > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>rsrc.map_length<S2SV_blank>><S2SV_blank>len\\\\n\" ) ; error = SFE_SD2_BAD_MAP_LENGTH ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . data_offset + rsrc . data_length != rsrc . map_offset || rsrc . map_offset + rsrc . map_length != rsrc . rsrc_len ) { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>This<S2SV_blank>does<S2SV_blank>not<S2SV_blank>look<S2SV_blank>like<S2SV_blank>a<S2SV_blank>MacOSX<S2SV_blank>resource<S2SV_blank>fork.\\\\n\" ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; if ( rsrc . map_offset + 28 >= rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>map<S2SV_blank>offset<S2SV_blank>(%d<S2SV_blank>+<S2SV_blank>28<S2SV_blank>><S2SV_blank>%d).\\\\n\" , rsrc . map_offset , rsrc . rsrc_len ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; rsrc . string_offset = rsrc . map_offset + read_rsrc_short ( & rsrc , rsrc . map_offset + 26 ) ; if ( rsrc . string_offset > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>string<S2SV_blank>offset<S2SV_blank>(%d).\\\\n\" , rsrc . string_offset ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; rsrc . type_offset = rsrc . map_offset + 30 ; <S2SV_StartBug> rsrc . type_count = read_rsrc_short ( & rsrc , rsrc . map_offset + 28 ) + 1 ; <S2SV_EndBug> if ( rsrc . type_count < 1 ) { psf_log_printf ( psf , \"Bad<S2SV_blank>type<S2SV_blank>count.\\\\n\" ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; rsrc . item_offset = rsrc . type_offset + rsrc . type_count * 8 ; if ( rsrc . item_offset < 0 || rsrc . item_offset > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>item<S2SV_blank>offset<S2SV_blank>(%d).\\\\n\" , rsrc . item_offset ) ; error = SFE_SD2_BAD_RSRC ; goto parse_rsrc_fork_cleanup ; } ; rsrc . str_index = - 1 ; for ( k = 0 ; k < rsrc . type_count ; k ++ ) <S2SV_StartBug> { marker = read_rsrc_marker ( & rsrc , rsrc . type_offset + k * 8 ) ; <S2SV_EndBug> if ( marker == STR_MARKER ) { rsrc . str_index = k ; rsrc . str_count = read_rsrc_short ( & rsrc , rsrc . type_offset + k * 8 + 4 ) + 1 ; error = parse_str_rsrc ( psf , & rsrc ) ; goto parse_rsrc_fork_cleanup ; } ; } ; psf_log_printf ( psf , \"No<S2SV_blank>\\'STR<S2SV_blank>\\'<S2SV_blank>resource.\\\\n\" ) ; error = SFE_SD2_BAD_RSRC ; parse_rsrc_fork_cleanup : psf_use_rsrc ( psf , SF_FALSE ) ; if ( rsrc . need_to_free_rsrc_data ) free ( rsrc . rsrc_data ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 30 ; if ( rsrc . map_offset + 28 > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>map<S2SV_blank>offset.\\\\n\" ) ; goto parse_rsrc_fork_cleanup ; } ; <S2SV_ModStart> ++ ) { if ( <S2SV_ModEnd> rsrc . type_offset <S2SV_ModStart> k * 8 > rsrc . rsrc_len ) { psf_log_printf ( psf , \"Bad<S2SV_blank>rsrc<S2SV_blank>marker.\\\\n\" ) ; goto parse_rsrc_fork_cleanup ; } ; marker = read_rsrc_marker ( & rsrc , rsrc . type_offset + k * 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int em_ret_far ( struct x86_emulate_ctxt * ctxt ) { int rc ; <S2SV_StartBug> unsigned long cs ; <S2SV_EndBug> int cpl = ctxt -> ops -> cpl ( ctxt ) ; <S2SV_StartBug> rc = emulate_pop ( ctxt , & ctxt -> _eip , ctxt -> op_bytes ) ; <S2SV_EndBug> if ( rc != X86EMUL_CONTINUE ) <S2SV_StartBug> return rc ; <S2SV_EndBug> if ( ctxt -> op_bytes == 4 ) ctxt -> _eip = ( u32 ) ctxt -> _eip ; rc = emulate_pop ( ctxt , & cs , ctxt -> op_bytes ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; if ( ctxt -> mode >= X86EMUL_MODE_PROT16 && ( cs & 3 ) > cpl ) return X86EMUL_UNHANDLEABLE ; <S2SV_StartBug> rc = load_segment_descriptor ( ctxt , ( u16 ) cs , VCPU_SREG_CS ) ; <S2SV_EndBug> return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned long eip , cs ; u16 old_cs <S2SV_ModEnd> ; int cpl <S2SV_ModStart> ctxt ) ; struct desc_struct old_desc , new_desc ; const struct x86_emulate_ops * ops = ctxt -> ops ; if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) ops -> get_segment ( ctxt , & old_cs , & old_desc , NULL , VCPU_SREG_CS ) ; <S2SV_ModStart> ctxt , & eip <S2SV_ModEnd> , ctxt -> <S2SV_ModStart> ) return rc <S2SV_ModEnd> ; rc = <S2SV_ModStart> ; rc = __load_segment_descriptor <S2SV_ModEnd> ( ctxt , <S2SV_ModStart> cs , VCPU_SREG_CS , 0 , false , & new_desc ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; rc = assign_eip_far ( ctxt , eip , new_desc . l ) ; if ( rc != X86EMUL_CONTINUE ) { WARN_ON ( ! ctxt -> mode != X86EMUL_MODE_PROT64 ) ; ops -> set_segment ( ctxt , old_cs , & old_desc , 0 , VCPU_SREG_CS ) ; } <S2SV_ModEnd> return rc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6310\n\n```\nCWE-125 static VarLenData * * get_html_data ( MAPI_Attr * a ) { VarLenData * * body = XCALLOC ( VarLenData * , a -> num_values + 1 ) ; int j ; for ( j = 0 ; j < a -> num_values ; j ++ ) <S2SV_StartBug> { <S2SV_EndBug> body [ j ] = XMALLOC ( VarLenData , 1 ) ; body [ j ] -> len = a -> values [ j ] . len ; body [ j ] -> data = CHECKED_XCALLOC ( unsigned char , a -> values [ j ] . len ) ; memmove ( body [ j ] -> data , a -> values [ j ] . data . buf , body [ j ] -> len ) ; } <S2SV_StartBug> return body ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> j ++ ) { if ( a -> type == szMAPI_BINARY ) <S2SV_ModStart> ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 static int muscle_list_files ( sc_card_t * card , u8 * buf , size_t bufLen ) { muscle_private_t * priv = MUSCLE_DATA ( card ) ; mscfs_t * fs = priv -> fs ; int x ; int count = 0 ; mscfs_check_cache ( priv -> fs ) ; for ( x = 0 ; x < fs -> cache . size ; x ++ ) { u8 * oid = fs -> cache . array [ x ] . objectId . id ; <S2SV_StartBug> sc_debug ( card -> ctx , SC_LOG_DEBUG_NORMAL , <S2SV_EndBug> \"FILE:<S2SV_blank>%02X%02X%02X%02X\\\\n\" , oid [ 0 ] , oid [ 1 ] , oid [ 2 ] , oid [ 3 ] ) ; if ( 0 == memcmp ( fs -> currentPath , oid , 2 ) ) { buf [ 0 ] = oid [ 2 ] ; buf [ 1 ] = oid [ 3 ] ; if ( buf [ 0 ] == 0x00 && buf [ 1 ] == 0x00 ) continue ; buf += 2 ; count += 2 ; <S2SV_StartBug> } <S2SV_EndBug> } return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . id ; if ( bufLen < 2 ) break ; <S2SV_ModStart> += 2 ; bufLen -= 2 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-522(凭证保护不足)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7524\n\n```\nCWE-522 static TPM_RC StartAuthSession ( TSS2_SYS_CONTEXT * sapi_context , SESSION * session ) { TPM_RC rval ; TPM2B_ENCRYPTED_SECRET key ; char label [ ] = \"ATH\" ; UINT16 bytes ; int i ; key . t . size = 0 ; if ( session -> nonceOlder . t . size == 0 ) { session -> nonceOlder . t . size = GetDigestSize ( TPM_ALG_SHA1 ) ; for ( i = 0 ; i < session -> nonceOlder . t . size ; i ++ ) session -> nonceOlder . t . buffer [ i ] = 0 ; } session -> nonceNewer . t . size = session -> nonceOlder . t . size ; rval = Tss2_Sys_StartAuthSession ( sapi_context , session -> tpmKey , session -> bind , 0 , & ( session -> nonceOlder ) , & ( session -> encryptedSalt ) , session -> sessionType , & ( session -> symmetric ) , session -> authHash , & ( session -> sessionHandle ) , & ( session -> nonceNewer ) , 0 ) ; if ( rval == TPM_RC_SUCCESS ) { if ( session -> tpmKey == TPM_RH_NULL ) session -> salt . t . size = 0 ; if ( session -> bind == TPM_RH_NULL ) session -> authValueBind . t . size = 0 ; if ( session -> tpmKey == TPM_RH_NULL && session -> bind == TPM_RH_NULL ) { session -> sessionKey . b . size = 0 ; } else { bool result = string_bytes_concat_buffer ( ( TPM2B_MAX_BUFFER * ) & key , & ( session -> authValueBind . b ) ) ; if ( ! result ) { return TSS2_SYS_RC_BAD_VALUE ; } result = string_bytes_concat_buffer ( ( TPM2B_MAX_BUFFER * ) & key , & ( session -> salt . b ) ) ; if ( ! result ) { return TSS2_SYS_RC_BAD_VALUE ; } bytes = GetDigestSize ( session -> authHash ) ; if ( key . t . size == 0 ) { session -> sessionKey . t . size = 0 ; } else { <S2SV_StartBug> rval = tpm_kdfa ( sapi_context , session -> authHash , & ( key . b ) , label , & ( session -> nonceNewer . b ) , <S2SV_EndBug> & ( session -> nonceOlder . b ) , bytes * 8 , ( TPM2B_MAX_BUFFER * ) & ( session -> sessionKey ) ) ; } if ( rval != TPM_RC_SUCCESS ) { return ( TSS2_APP_RC_CREATE_SESSION_KEY_FAILED ) ; } } session -> nonceTpmDecrypt . b . size = 0 ; session -> nonceTpmEncrypt . b . size = 0 ; session -> nvNameChanged = 0 ; } return rval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = tpm_kdfa ( <S2SV_ModEnd> session -> authHash\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14363\n\n```\nCWE-22 static int pop_fetch_headers ( struct Context * ctx ) { struct PopData * pop_data = ( struct PopData * ) ctx -> data ; struct Progress progress ; # ifdef USE_HCACHE header_cache_t * hc = pop_hcache_open ( pop_data , ctx -> path ) ; # endif time ( & pop_data -> check_time ) ; pop_data -> clear_cache = false ; for ( int i = 0 ; i < ctx -> msgcount ; i ++ ) ctx -> hdrs [ i ] -> refno = - 1 ; const int old_count = ctx -> msgcount ; int ret = pop_fetch_data ( pop_data , \"UIDL\\\\r\\\\n\" , NULL , fetch_uidl , ctx ) ; const int new_count = ctx -> msgcount ; ctx -> msgcount = old_count ; if ( pop_data -> cmd_uidl == 2 ) { if ( ret == 0 ) { pop_data -> cmd_uidl = 1 ; mutt_debug ( 1 , \"set<S2SV_blank>UIDL<S2SV_blank>capability\\\\n\" ) ; } if ( ret == - 2 && pop_data -> cmd_uidl == 2 ) { pop_data -> cmd_uidl = 0 ; mutt_debug ( 1 , \"unset<S2SV_blank>UIDL<S2SV_blank>capability\\\\n\" ) ; snprintf ( pop_data -> err_msg , sizeof ( pop_data -> err_msg ) , \"%s\" , _ ( \"Command<S2SV_blank>UIDL<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>server.\" ) ) ; } } if ( ! ctx -> quiet ) { mutt_progress_init ( & progress , _ ( \"Fetching<S2SV_blank>message<S2SV_blank>headers...\" ) , MUTT_PROGRESS_MSG , ReadInc , new_count - old_count ) ; } if ( ret == 0 ) { int i , deleted ; for ( i = 0 , deleted = 0 ; i < old_count ; i ++ ) { if ( ctx -> hdrs [ i ] -> refno == - 1 ) { ctx -> hdrs [ i ] -> deleted = true ; deleted ++ ; } } if ( deleted > 0 ) { mutt_error ( ngettext ( \"%d<S2SV_blank>message<S2SV_blank>has<S2SV_blank>been<S2SV_blank>lost.<S2SV_blank>Try<S2SV_blank>reopening<S2SV_blank>the<S2SV_blank>mailbox.\" , \"%d<S2SV_blank>messages<S2SV_blank>have<S2SV_blank>been<S2SV_blank>lost.<S2SV_blank>Try<S2SV_blank>reopening<S2SV_blank>the<S2SV_blank>mailbox.\" , deleted ) , deleted ) ; } bool hcached = false ; for ( i = old_count ; i < new_count ; i ++ ) { if ( ! ctx -> quiet ) mutt_progress_update ( & progress , i + 1 - old_count , - 1 ) ; # ifdef USE_HCACHE void * data = mutt_hcache_fetch ( hc , ctx -> hdrs [ i ] -> data , strlen ( ctx -> hdrs [ i ] -> data ) ) ; if ( data ) { char * uidl = mutt_str_strdup ( ctx -> hdrs [ i ] -> data ) ; int refno = ctx -> hdrs [ i ] -> refno ; int index = ctx -> hdrs [ i ] -> index ; struct Header * h = mutt_hcache_restore ( ( unsigned char * ) data ) ; mutt_hcache_free ( hc , & data ) ; mutt_header_free ( & ctx -> hdrs [ i ] ) ; ctx -> hdrs [ i ] = h ; ctx -> hdrs [ i ] -> refno = refno ; ctx -> hdrs [ i ] -> index = index ; ctx -> hdrs [ i ] -> data = uidl ; ret = 0 ; hcached = true ; } else # endif if ( ( ret = pop_read_header ( pop_data , ctx -> hdrs [ i ] ) ) < 0 ) break ; # ifdef USE_HCACHE else { mutt_hcache_store ( hc , ctx -> hdrs [ i ] -> data , strlen ( ctx -> hdrs [ i ] -> data ) , ctx -> hdrs [ i ] , 0 ) ; } # endif const bool bcached = <S2SV_StartBug> ( mutt_bcache_exists ( pop_data -> bcache , ctx -> hdrs [ i ] -> data ) == 0 ) ; <S2SV_EndBug> ctx -> hdrs [ i ] -> old = false ; ctx -> hdrs [ i ] -> read = false ; if ( hcached ) { if ( bcached ) ctx -> hdrs [ i ] -> read = true ; else if ( MarkOld ) ctx -> hdrs [ i ] -> old = true ; } else { if ( bcached ) ctx -> hdrs [ i ] -> read = true ; } ctx -> msgcount ++ ; } if ( i > old_count ) mx_update_context ( ctx , i - old_count ) ; } # ifdef USE_HCACHE mutt_hcache_close ( hc ) ; # endif if ( ret < 0 ) { for ( int i = ctx -> msgcount ; i < new_count ; i ++ ) mutt_header_free ( & ctx -> hdrs [ i ] ) ; return ret ; } if ( MessageCacheClean ) mutt_bcache_list ( pop_data -> bcache , msg_cache_check , ( void * ) ctx ) ; mutt_clear_error ( ) ; return ( new_count - old_count ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> bcache , cache_id ( ctx -> hdrs [ i ] -> data ) <S2SV_ModEnd> ) == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12190\n\n```\nCWE-772 struct bio * bio_map_user_iov ( struct request_queue * q , const struct iov_iter * iter , gfp_t gfp_mask ) { int j ; int nr_pages = 0 ; struct page * * pages ; struct bio * bio ; int cur_page = 0 ; int ret , offset ; struct iov_iter i ; <S2SV_StartBug> struct iovec iov ; <S2SV_EndBug> iov_for_each ( iov , i , * iter ) { unsigned long uaddr = ( unsigned long ) iov . iov_base ; unsigned long len = iov . iov_len ; unsigned long end = ( uaddr + len + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; unsigned long start = uaddr >> PAGE_SHIFT ; if ( end < start ) return ERR_PTR ( - EINVAL ) ; nr_pages += end - start ; if ( uaddr & queue_dma_alignment ( q ) ) return ERR_PTR ( - EINVAL ) ; } if ( ! nr_pages ) return ERR_PTR ( - EINVAL ) ; bio = bio_kmalloc ( gfp_mask , nr_pages ) ; if ( ! bio ) return ERR_PTR ( - ENOMEM ) ; ret = - ENOMEM ; pages = kcalloc ( nr_pages , sizeof ( struct page * ) , gfp_mask ) ; if ( ! pages ) goto out ; iov_for_each ( iov , i , * iter ) { unsigned long uaddr = ( unsigned long ) iov . iov_base ; unsigned long len = iov . iov_len ; unsigned long end = ( uaddr + len + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; unsigned long start = uaddr >> PAGE_SHIFT ; const int local_nr_pages = end - start ; const int page_limit = cur_page + local_nr_pages ; ret = get_user_pages_fast ( uaddr , local_nr_pages , ( iter -> type & WRITE ) != WRITE , & pages [ cur_page ] ) ; <S2SV_StartBug> if ( ret < local_nr_pages ) { <S2SV_EndBug> ret = - EFAULT ; goto out_unmap ; } offset = offset_in_page ( uaddr ) ; for ( j = cur_page ; j < page_limit ; j ++ ) { unsigned int bytes = PAGE_SIZE - offset ; unsigned short prev_bi_vcnt = bio -> bi_vcnt ; if ( len <= 0 ) break ; if ( bytes > len ) bytes = len ; if ( bio_add_pc_page ( q , bio , pages [ j ] , bytes , offset ) < bytes ) break ; if ( bio -> bi_vcnt == prev_bi_vcnt ) put_page ( pages [ j ] ) ; len -= bytes ; offset = 0 ; } cur_page = j ; while ( j < page_limit ) put_page ( pages [ j ++ ] ) ; } kfree ( pages ) ; bio_set_flag ( bio , BIO_USER_MAPPED ) ; bio_get ( bio ) ; return bio ; out_unmap : <S2SV_StartBug> for ( j = 0 ; j < nr_pages ; j ++ ) { <S2SV_EndBug> if ( ! pages [ j ] ) break ; put_page ( pages [ j ] ) ; } out : kfree ( pages ) ; bio_put ( bio ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct iovec iov ; struct bio_vec * bvec <S2SV_ModStart> ; if ( unlikely ( <S2SV_ModStart> < local_nr_pages ) ) { for ( j = cur_page ; j < page_limit ; j ++ ) { if ( ! pages [ j ] ) break ; put_page ( pages [ j ] ) ; } <S2SV_ModEnd> ret = - <S2SV_ModStart> ; out_unmap : bio_for_each_segment_all ( bvec , bio , j ) { put_page ( bvec -> bv_page <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7513\n\n```\nCWE-000 static int kvm_vm_ioctl_set_pit2 ( struct kvm * kvm , struct kvm_pit_state2 * ps ) { <S2SV_StartBug> int start = 0 ; <S2SV_EndBug> u32 prev_legacy , cur_legacy ; mutex_lock ( & kvm -> arch . vpit -> pit_state . lock ) ; prev_legacy = kvm -> arch . vpit -> pit_state . flags & KVM_PIT_FLAGS_HPET_LEGACY ; cur_legacy = ps -> flags & KVM_PIT_FLAGS_HPET_LEGACY ; if ( ! prev_legacy && cur_legacy ) start = 1 ; memcpy ( & kvm -> arch . vpit -> pit_state . channels , & ps -> channels , sizeof ( kvm -> arch . vpit -> pit_state . channels ) ) ; kvm -> arch . vpit -> pit_state . flags = ps -> flags ; <S2SV_StartBug> kvm_pit_load_count ( kvm , 0 , kvm -> arch . vpit -> pit_state . channels [ 0 ] . count , start ) ; <S2SV_EndBug> mutex_unlock ( & kvm -> arch . vpit -> pit_state . lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> start = 0 ; int i <S2SV_ModStart> -> flags ; for ( i = 0 ; i < 3 ; i ++ ) <S2SV_ModStart> ( kvm , i <S2SV_ModEnd> , kvm -> <S2SV_ModStart> . channels [ i <S2SV_ModEnd> ] . count\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static int swp_handler ( struct pt_regs * regs , unsigned int instr ) { unsigned int address , destreg , data , type ; unsigned int res = 0 ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , regs -> ARM_pc ) ; <S2SV_EndBug> if ( current -> pid != previous_pid ) { pr_debug ( \"\\\\\"%s\\\\\"<S2SV_blank>(%ld)<S2SV_blank>uses<S2SV_blank>deprecated<S2SV_blank>SWP{B}<S2SV_blank>instruction\\\\n\" , current -> comm , ( unsigned long ) current -> pid ) ; previous_pid = current -> pid ; } address = regs -> uregs [ EXTRACT_REG_NUM ( instr , RN_OFFSET ) ] ; data = regs -> uregs [ EXTRACT_REG_NUM ( instr , RT2_OFFSET ) ] ; destreg = EXTRACT_REG_NUM ( instr , RT_OFFSET ) ; type = instr & TYPE_SWPB ; pr_debug ( \"addr<S2SV_blank>in<S2SV_blank>r%d->0x%08x,<S2SV_blank>dest<S2SV_blank>is<S2SV_blank>r%d,<S2SV_blank>source<S2SV_blank>in<S2SV_blank>r%d->0x%08x)\\\\n\" , EXTRACT_REG_NUM ( instr , RN_OFFSET ) , address , destreg , EXTRACT_REG_NUM ( instr , RT2_OFFSET ) , data ) ; if ( ! access_ok ( VERIFY_WRITE , ( address & ~ 3 ) , 4 ) ) { pr_debug ( \"SWP{B}<S2SV_blank>emulation:<S2SV_blank>access<S2SV_blank>to<S2SV_blank>%p<S2SV_blank>not<S2SV_blank>allowed!\\\\n\" , ( void * ) address ) ; res = - EFAULT ; } else { res = emulate_swpX ( address , & data , type ) ; } if ( res == 0 ) { regs -> ARM_pc += 4 ; regs -> uregs [ destreg ] = data ; } else if ( res == - EFAULT ) { set_segfault ( regs , address ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , regs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11381\n\n```\nCWE-125 static int string_scan_range ( RList * list , RBinFile * bf , int min , const ut64 from , const ut64 to , int type ) { ut8 tmp [ R_STRING_SCAN_BUFFER_SIZE ] ; ut64 str_start , needle = from ; int count = 0 , i , rc , runes ; int str_type = R_STRING_TYPE_DETECT ; if ( type == - 1 ) { type = R_STRING_TYPE_DETECT ; } if ( from >= to ) { eprintf ( \"Invalid<S2SV_blank>range<S2SV_blank>to<S2SV_blank>find<S2SV_blank>strings<S2SV_blank>0x%llx<S2SV_blank>..<S2SV_blank>0x%llx\\\\n\" , from , to ) ; return - 1 ; } <S2SV_StartBug> ut8 * buf = calloc ( to - from , 1 ) ; <S2SV_EndBug> if ( ! buf || ! min ) { return - 1 ; } <S2SV_StartBug> r_buf_read_at ( bf -> buf , from , buf , to - from ) ; <S2SV_EndBug> while ( needle < to ) { rc = r_utf8_decode ( buf + needle - from , to - needle , NULL ) ; if ( ! rc ) { needle ++ ; continue ; } if ( type == R_STRING_TYPE_DETECT ) { char * w = ( char * ) buf + needle + rc - from ; <S2SV_StartBug> if ( ( to - needle ) > 5 ) { <S2SV_EndBug> <S2SV_StartBug> bool is_wide32 = needle + rc + 2 < to && ! w [ 0 ] && ! w [ 1 ] && ! w [ 2 ] && w [ 3 ] && ! w [ 4 ] ; <S2SV_EndBug> if ( is_wide32 ) { str_type = R_STRING_TYPE_WIDE32 ; } else { bool is_wide = needle + rc + 2 < to && ! w [ 0 ] && w [ 1 ] && ! w [ 2 ] ; str_type = is_wide ? R_STRING_TYPE_WIDE : R_STRING_TYPE_ASCII ; } } else { str_type = R_STRING_TYPE_ASCII ; } } else { str_type = type ; } runes = 0 ; str_start = needle ; for ( rc = i = 0 ; i < sizeof ( tmp ) - 3 && needle < to ; i += rc ) { RRune r = { 0 } ; if ( str_type == R_STRING_TYPE_WIDE32 ) { rc = r_utf32le_decode ( buf + needle - from , to - needle , & r ) ; if ( rc ) { rc = 4 ; } } else if ( str_type == R_STRING_TYPE_WIDE ) { rc = r_utf16le_decode ( buf + needle - from , to - needle , & r ) ; if ( rc == 1 ) { rc = 2 ; } } else { rc = r_utf8_decode ( buf + needle - from , to - needle , & r ) ; if ( rc > 1 ) { str_type = R_STRING_TYPE_UTF8 ; } } if ( ! rc ) { needle ++ ; break ; } needle += rc ; if ( r_isprint ( r ) && r != '\\\\\\\\' ) { if ( str_type == R_STRING_TYPE_WIDE32 ) { if ( r == 0xff ) { r = 0 ; } } rc = r_utf8_encode ( & tmp [ i ] , r ) ; runes ++ ; } else if ( r && r < 0x100 && strchr ( \"\\\\b\\\\v\\\\f\\\\n\\\\r\\\\t\\\\a\\\\033\\\\\\\\\" , ( char ) r ) ) { if ( ( i + 32 ) < sizeof ( tmp ) && r < 93 ) { tmp [ i + 0 ] = '\\\\\\\\' ; tmp [ i + 1 ] = \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>abtnvfr<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>e<S2SV_blank><S2SV_blank>\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"<S2SV_blank><S2SV_blank>\\\\\\\\\" [ r ] ; } else { break ; } rc = 2 ; runes ++ ; } else { break ; } } tmp [ i ++ ] = '\\\\0' ; if ( runes >= min ) { if ( str_type == R_STRING_TYPE_ASCII ) { int j ; for ( j = 0 ; j < i ; j ++ ) { char ch = tmp [ j ] ; if ( ch != '\\\\n' && ch != '\\\\r' && ch != '\\\\t' ) { if ( ! IS_PRINTABLE ( tmp [ j ] ) ) { continue ; } } } } RBinString * bs = R_NEW0 ( RBinString ) ; if ( ! bs ) { break ; } bs -> type = str_type ; bs -> length = runes ; bs -> size = needle - str_start ; bs -> ordinal = count ++ ; switch ( str_type ) { case R_STRING_TYPE_WIDE : if ( str_start - from > 1 ) { const ut8 * p = buf + str_start - 2 - from ; if ( p [ 0 ] == 0xff && p [ 1 ] == 0xfe ) { str_start -= 2 ; } } break ; case R_STRING_TYPE_WIDE32 : if ( str_start - from > 3 ) { const ut8 * p = buf + str_start - 4 - from ; if ( p [ 0 ] == 0xff && p [ 1 ] == 0xfe ) { str_start -= 4 ; } } break ; } bs -> paddr = bs -> vaddr = str_start ; bs -> string = r_str_ndup ( ( const char * ) tmp , i ) ; if ( list ) { r_list_append ( list , bs ) ; } else { print_string ( bs , bf ) ; r_bin_string_free ( bs ) ; } } } free ( buf ) ; return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; } int len = to - from ; <S2SV_ModStart> = calloc ( len <S2SV_ModEnd> , 1 ) <S2SV_ModStart> , buf , len <S2SV_ModEnd> ) ; while <S2SV_ModStart> ) > 5 + rc <S2SV_ModStart> bool is_wide32 = ( <S2SV_ModStart> 2 < to ) && ( <S2SV_ModEnd> ! w [ <S2SV_ModStart> [ 4 ] )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_CreateNull ( void ) { cJSON * item = cJSON_New_Item ( ) ; if ( item ) item -> type = cJSON_NULL ; return item ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static void process_demand_active ( STREAM s ) { uint8 type ; uint16 len_src_descriptor , len_combined_caps ; <S2SV_StartBug> rd_create_ui ( ) ; <S2SV_EndBug> in_uint32_le ( s , g_rdp_shareid ) ; in_uint16_le ( s , len_src_descriptor ) ; <S2SV_StartBug> in_uint16_le ( s , len_combined_caps ) ; <S2SV_EndBug> in_uint8s ( s , len_src_descriptor ) ; logger ( Protocol , Debug , \"process_demand_active(),<S2SV_blank>shareid=0x%x\" , g_rdp_shareid ) ; rdp_process_server_caps ( s , len_combined_caps ) ; rdp_send_confirm_active ( ) ; rdp_send_synchronise ( ) ; rdp_send_control ( RDP_CTL_COOPERATE ) ; rdp_send_control ( RDP_CTL_REQUEST_CONTROL ) ; rdp_recv ( & type ) ; rdp_recv ( & type ) ; rdp_recv ( & type ) ; rdp_send_input ( 0 , RDP_INPUT_SYNCHRONIZE , 0 , g_numlock_sync ? ui_get_numlock_state ( read_keyboard_state ( ) ) : 0 , 0 ) ; if ( g_rdp_version >= RDP_V5 ) { rdp_enum_bmpcache2 ( ) ; rdp_send_fonts ( 3 ) ; } else { rdp_send_fonts ( 1 ) ; rdp_send_fonts ( 2 ) ; } rdp_recv ( & type ) ; reset_order_state ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , len_combined_caps ; struct stream packet = * s ; <S2SV_ModStart> len_combined_caps ) ; if ( ! s_check_rem ( s , len_src_descriptor ) ) { rdp_protocol_error ( \"rdp_demand_active(),<S2SV_blank>consume<S2SV_blank>of<S2SV_blank>source<S2SV_blank>descriptor<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11363\n\n```\nCWE-125 static int jpeg_size ( unsigned char * data , unsigned int data_size , int * width , int * height ) { int i = 0 ; if ( i + 3 < data_size && data [ i ] == 0xFF && data [ i + 1 ] == 0xD8 && data [ i + 2 ] == 0xFF && data [ i + 3 ] == 0xE0 ) { i += 4 ; if ( i + 6 < data_size && data [ i + 2 ] == 'J' && data [ i + 3 ] == 'F' && data [ i + 4 ] == 'I' && data [ i + 5 ] == 'F' && data [ i + 6 ] == 0x00 ) { unsigned short block_length = data [ i ] * 256 + data [ i + 1 ] ; while ( i < data_size ) { i += block_length ; if ( ( i + 1 ) >= data_size ) return - 1 ; if ( data [ i ] != 0xFF ) return - 1 ; if ( data [ i + 1 ] == 0xC0 ) { * height = data [ i + 5 ] * 256 + data [ i + 6 ] ; * width = data [ i + 7 ] * 256 + data [ i + 8 ] ; return 0 ; } i += 2 ; <S2SV_StartBug> block_length = data [ i ] * 256 + data [ i + 1 ] ; <S2SV_EndBug> } } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += 2 ; if ( i + 1 < data_size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7514\n\n```\nCWE-125 static MagickBooleanType ReadPSDChannelPixels ( Image * image , const size_t channels , const size_t row , const ssize_t type , const unsigned char * pixels , ExceptionInfo * exception ) { Quantum pixel ; register const unsigned char * p ; register Quantum * q ; register ssize_t x ; size_t packet_size ; unsigned short nibble ; p = pixels ; q = GetAuthenticPixels ( image , 0 , row , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) return MagickFalse ; packet_size = GetPSDPacketSize ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( packet_size == 1 ) pixel = ScaleCharToQuantum ( * p ++ ) ; else { p = PushShortPixel ( MSBEndian , p , & nibble ) ; pixel = ScaleShortToQuantum ( nibble ) ; } <S2SV_StartBug> switch ( type ) <S2SV_EndBug> { case - 1 : { SetPixelAlpha ( image , pixel , q ) ; break ; } case - 2 : case 0 : { SetPixelRed ( image , pixel , q ) ; if ( channels == 1 || type == - 2 ) SetPixelGray ( image , pixel , q ) ; if ( image -> storage_class == PseudoClass ) { if ( packet_size == 1 ) SetPixelIndex ( image , ScaleQuantumToChar ( pixel ) , q ) ; else SetPixelIndex ( image , ScaleQuantumToShort ( pixel ) , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) ConstrainColormapIndex ( image , GetPixelIndex ( image , q ) , exception ) , q ) ; if ( image -> depth == 1 ) { ssize_t bit , number_bits ; number_bits = image -> columns - x ; if ( number_bits > 8 ) number_bits = 8 ; for ( bit = 0 ; bit < number_bits ; bit ++ ) { <S2SV_StartBug> SetPixelIndex ( image , ( ( ( unsigned char ) pixel ) & <S2SV_EndBug> <S2SV_StartBug> ( 0x01 << ( 7 - bit ) ) ) != 0 ? 0 : 255 , q ) ; <S2SV_EndBug> SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) ConstrainColormapIndex ( image , GetPixelIndex ( image , q ) , exception ) , q ) ; q += GetPixelChannels ( image ) ; x ++ ; } <S2SV_StartBug> x -- ; <S2SV_EndBug> continue ; } } <S2SV_StartBug> break ; <S2SV_EndBug> } case 1 : { if ( image -> storage_class == PseudoClass ) SetPixelAlpha ( image , pixel , q ) ; else SetPixelGreen ( image , pixel , q ) ; break ; } case 2 : { if ( image -> storage_class == PseudoClass ) SetPixelAlpha ( image , pixel , q ) ; else SetPixelBlue ( image , pixel , q ) ; break ; } case 3 : { if ( image -> colorspace == CMYKColorspace ) SetPixelBlack ( image , pixel , q ) ; else if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , pixel , q ) ; break ; } case 4 : { if ( ( IssRGBCompatibleColorspace ( image -> colorspace ) != MagickFalse ) && ( channels > 3 ) ) break ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , pixel , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } return ( SyncAuthenticPixels ( image , exception ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( image -> depth > 1 ) { SetPSDPixel ( image , channels , type , packet_size , pixel , q , exception ) ; q += GetPixelChannels ( image ) ; } else <S2SV_ModEnd> { ssize_t bit <S2SV_ModStart> ++ ) { SetPSDPixel ( image , channels , type , packet_size <S2SV_ModEnd> , ( ( <S2SV_ModStart> 255 , q , exception <S2SV_ModEnd> ) ; q <S2SV_ModStart> ++ ; } if ( x != image -> columns ) <S2SV_ModStart> ; } } <S2SV_ModEnd> return ( SyncAuthenticPixels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-276(不正确的默认权限)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-26088\n\n```\nCWE-276 static int rawsock_create ( struct net * net , struct socket * sock , const struct nfc_protocol * nfc_proto , int kern ) { struct sock * sk ; pr_debug ( \"sock=%p\\\\n\" , sock ) ; if ( ( sock -> type != SOCK_SEQPACKET ) && ( sock -> type != SOCK_RAW ) ) return - ESOCKTNOSUPPORT ; <S2SV_StartBug> if ( sock -> type == SOCK_RAW ) <S2SV_EndBug> sock -> ops = & rawsock_raw_ops ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> sock -> ops = & rawsock_ops ; <S2SV_EndBug> sk = sk_alloc ( net , PF_NFC , GFP_ATOMIC , nfc_proto -> proto , kern ) ; if ( ! sk ) return - ENOMEM ; sock_init_data ( sock , sk ) ; sk -> sk_protocol = nfc_proto -> id ; sk -> sk_destruct = rawsock_destruct ; sock -> state = SS_UNCONNECTED ; if ( sock -> type == SOCK_RAW ) nfc_sock_link ( & raw_sk_list , sk ) ; else { INIT_WORK ( & nfc_rawsock ( sk ) -> tx_work , rawsock_tx_work ) ; nfc_rawsock ( sk ) -> tx_work_scheduled = false ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == SOCK_RAW ) { if ( ! capable ( CAP_NET_RAW ) ) return - EPERM ; <S2SV_ModStart> & rawsock_raw_ops ; } else { <S2SV_ModEnd> sock -> ops <S2SV_ModStart> & rawsock_ops ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12589\n\n```\nCWE-732 int sandbox ( void * sandbox_arg ) { ( void ) sandbox_arg ; pid_t child_pid = getpid ( ) ; if ( arg_debug ) printf ( \"Initializing<S2SV_blank>child<S2SV_blank>process\\\\n\" ) ; close ( parent_to_child_fds [ 1 ] ) ; close ( child_to_parent_fds [ 0 ] ) ; wait_for_other ( parent_to_child_fds [ 0 ] ) ; if ( arg_debug && child_pid == 1 ) printf ( \"PID<S2SV_blank>namespace<S2SV_blank>installed\\\\n\" ) ; if ( cfg . hostname ) { if ( sethostname ( cfg . hostname , strlen ( cfg . hostname ) ) < 0 ) errExit ( \"sethostname\" ) ; } if ( mount ( NULL , \"/\" , NULL , MS_SLAVE | MS_REC , NULL ) < 0 ) { chk_chroot ( ) ; } preproc_mount_mnt_dir ( ) ; if ( mount ( LIBDIR \"/firejail\" , RUN_FIREJAIL_LIB_DIR , \"none\" , MS_BIND , NULL ) < 0 ) errExit ( \"mounting<S2SV_blank>\" RUN_FIREJAIL_LIB_DIR ) ; if ( cfg . name ) fs_logger2 ( \"sandbox<S2SV_blank>name:\" , cfg . name ) ; fs_logger2int ( \"sandbox<S2SV_blank>pid:\" , ( int ) sandbox_pid ) ; if ( cfg . chrootdir ) fs_logger ( \"sandbox<S2SV_blank>filesystem:<S2SV_blank>chroot\" ) ; else if ( arg_overlay ) fs_logger ( \"sandbox<S2SV_blank>filesystem:<S2SV_blank>overlay\" ) ; else fs_logger ( \"sandbox<S2SV_blank>filesystem:<S2SV_blank>local\" ) ; fs_logger ( \"install<S2SV_blank>mount<S2SV_blank>namespace\" ) ; if ( arg_netfilter && any_bridge_configured ( ) ) { netfilter ( arg_netfilter_file ) ; } if ( arg_netfilter6 && any_bridge_configured ( ) ) { netfilter6 ( arg_netfilter6_file ) ; } int gw_cfg_failed = 0 ; if ( arg_nonetwork ) { net_if_up ( \"lo\" ) ; if ( arg_debug ) printf ( \"Network<S2SV_blank>namespace<S2SV_blank>enabled,<S2SV_blank>only<S2SV_blank>loopback<S2SV_blank>interface<S2SV_blank>available\\\\n\" ) ; } else if ( arg_netns ) { netns ( arg_netns ) ; if ( arg_debug ) printf ( \"Network<S2SV_blank>namespace<S2SV_blank>\\'%s\\'<S2SV_blank>activated\\\\n\" , arg_netns ) ; } else if ( any_bridge_configured ( ) || any_interface_configured ( ) ) { net_if_up ( \"lo\" ) ; if ( mac_not_zero ( cfg . bridge0 . macsandbox ) ) net_config_mac ( cfg . bridge0 . devsandbox , cfg . bridge0 . macsandbox ) ; sandbox_if_up ( & cfg . bridge0 ) ; if ( mac_not_zero ( cfg . bridge1 . macsandbox ) ) net_config_mac ( cfg . bridge1 . devsandbox , cfg . bridge1 . macsandbox ) ; sandbox_if_up ( & cfg . bridge1 ) ; if ( mac_not_zero ( cfg . bridge2 . macsandbox ) ) net_config_mac ( cfg . bridge2 . devsandbox , cfg . bridge2 . macsandbox ) ; sandbox_if_up ( & cfg . bridge2 ) ; if ( mac_not_zero ( cfg . bridge3 . macsandbox ) ) net_config_mac ( cfg . bridge3 . devsandbox , cfg . bridge3 . macsandbox ) ; sandbox_if_up ( & cfg . bridge3 ) ; if ( cfg . interface0 . configured && cfg . interface0 . ip ) { if ( arg_debug ) printf ( \"Configuring<S2SV_blank>%d.%d.%d.%d<S2SV_blank>address<S2SV_blank>on<S2SV_blank>interface<S2SV_blank>%s\\\\n\" , PRINT_IP ( cfg . interface0 . ip ) , cfg . interface0 . dev ) ; net_config_interface ( cfg . interface0 . dev , cfg . interface0 . ip , cfg . interface0 . mask , cfg . interface0 . mtu ) ; } if ( cfg . interface1 . configured && cfg . interface1 . ip ) { if ( arg_debug ) printf ( \"Configuring<S2SV_blank>%d.%d.%d.%d<S2SV_blank>address<S2SV_blank>on<S2SV_blank>interface<S2SV_blank>%s\\\\n\" , PRINT_IP ( cfg . interface1 . ip ) , cfg . interface1 . dev ) ; net_config_interface ( cfg . interface1 . dev , cfg . interface1 . ip , cfg . interface1 . mask , cfg . interface1 . mtu ) ; } if ( cfg . interface2 . configured && cfg . interface2 . ip ) { if ( arg_debug ) printf ( \"Configuring<S2SV_blank>%d.%d.%d.%d<S2SV_blank>address<S2SV_blank>on<S2SV_blank>interface<S2SV_blank>%s\\\\n\" , PRINT_IP ( cfg . interface2 . ip ) , cfg . interface2 . dev ) ; net_config_interface ( cfg . interface2 . dev , cfg . interface2 . ip , cfg . interface2 . mask , cfg . interface2 . mtu ) ; } if ( cfg . interface3 . configured && cfg . interface3 . ip ) { if ( arg_debug ) printf ( \"Configuring<S2SV_blank>%d.%d.%d.%d<S2SV_blank>address<S2SV_blank>on<S2SV_blank>interface<S2SV_blank>%s\\\\n\" , PRINT_IP ( cfg . interface3 . ip ) , cfg . interface3 . dev ) ; net_config_interface ( cfg . interface3 . dev , cfg . interface3 . ip , cfg . interface3 . mask , cfg . interface3 . mtu ) ; } if ( cfg . defaultgw ) { if ( net_add_route ( 0 , 0 , cfg . defaultgw ) ) { fwarning ( \"cannot<S2SV_blank>configure<S2SV_blank>default<S2SV_blank>route\\\\n\" ) ; gw_cfg_failed = 1 ; } } if ( arg_debug ) printf ( \"Network<S2SV_blank>namespace<S2SV_blank>enabled\\\\n\" ) ; } if ( ! arg_quiet ) { if ( any_bridge_configured ( ) || any_interface_configured ( ) || cfg . defaultgw || cfg . dns1 ) { fmessage ( \"\\\\n\" ) ; if ( any_bridge_configured ( ) || any_interface_configured ( ) ) { if ( arg_scan ) sbox_run ( SBOX_ROOT | SBOX_CAPS_NETWORK | SBOX_SECCOMP , 3 , PATH_FNET , \"printif\" , \"scan\" ) ; else sbox_run ( SBOX_ROOT | SBOX_CAPS_NETWORK | SBOX_SECCOMP , 2 , PATH_FNET , \"printif\" ) ; } if ( cfg . defaultgw != 0 ) { if ( gw_cfg_failed ) fmessage ( \"Default<S2SV_blank>gateway<S2SV_blank>configuration<S2SV_blank>failed\\\\n\" ) ; else fmessage ( \"Default<S2SV_blank>gateway<S2SV_blank>%d.%d.%d.%d\\\\n\" , PRINT_IP ( cfg . defaultgw ) ) ; } if ( cfg . dns1 != NULL ) fmessage ( \"DNS<S2SV_blank>server<S2SV_blank>%s\\\\n\" , cfg . dns1 ) ; if ( cfg . dns2 != NULL ) fmessage ( \"DNS<S2SV_blank>server<S2SV_blank>%s\\\\n\" , cfg . dns2 ) ; if ( cfg . dns3 != NULL ) fmessage ( \"DNS<S2SV_blank>server<S2SV_blank>%s\\\\n\" , cfg . dns3 ) ; if ( cfg . dns4 != NULL ) fmessage ( \"DNS<S2SV_blank>server<S2SV_blank>%s\\\\n\" , cfg . dns4 ) ; fmessage ( \"\\\\n\" ) ; } } if ( arg_nonetwork || any_bridge_configured ( ) || any_interface_configured ( ) ) { } else { EUID_USER ( ) ; env_ibus_load ( ) ; EUID_ROOT ( ) ; } # ifdef HAVE_SECCOMP if ( cfg . protocol ) { if ( arg_debug ) printf ( \"Build<S2SV_blank>protocol<S2SV_blank>filter:<S2SV_blank>%s\\\\n\" , cfg . protocol ) ; int rv = sbox_run ( SBOX_USER | SBOX_CAPS_NONE | SBOX_SECCOMP , 5 , PATH_FSECCOMP , \"protocol\" , \"build\" , cfg . protocol , RUN_SECCOMP_PROTOCOL ) ; if ( rv ) exit ( rv ) ; } if ( arg_seccomp && ( cfg . seccomp_list || cfg . seccomp_list_drop || cfg . seccomp_list_keep ) ) arg_seccomp_postexec = 1 ; # endif bool need_preload = arg_trace || arg_tracelog || arg_seccomp_postexec ; if ( getuid ( ) != 0 && ( arg_appimage || cfg . chrootdir || arg_overlay ) ) { enforce_filters ( ) ; need_preload = arg_trace || arg_tracelog ; } if ( need_preload ) fs_trace_preload ( ) ; if ( cfg . hosts_file ) fs_store_hosts_file ( ) ; # ifdef HAVE_CHROOT if ( cfg . chrootdir ) { fs_chroot ( cfg . chrootdir ) ; if ( need_preload ) fs_trace_preload ( ) ; } else # endif # ifdef HAVE_OVERLAYFS if ( arg_overlay ) fs_overlayfs ( ) ; else # endif fs_basic_fs ( ) ; if ( arg_private ) { if ( cfg . home_private ) { if ( cfg . chrootdir ) fwarning ( \"private=directory<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private=directory<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else fs_private_homedir ( ) ; } else if ( cfg . home_private_keep ) { if ( cfg . chrootdir ) fwarning ( \"private-home=<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-home=<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else fs_private_home_list ( ) ; } else fs_private ( ) ; } if ( arg_private_dev ) fs_private_dev ( ) ; if ( arg_private_etc ) { if ( cfg . chrootdir ) fwarning ( \"private-etc<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-etc<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { fs_private_dir_list ( \"/etc\" , RUN_ETC_DIR , cfg . etc_private_keep ) ; if ( need_preload ) fs_trace_preload ( ) ; } } if ( arg_private_opt ) { if ( cfg . chrootdir ) fwarning ( \"private-opt<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-opt<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { fs_private_dir_list ( \"/opt\" , RUN_OPT_DIR , cfg . opt_private_keep ) ; } } if ( arg_private_srv ) { if ( cfg . chrootdir ) fwarning ( \"private-srv<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-srv<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { fs_private_dir_list ( \"/srv\" , RUN_SRV_DIR , cfg . srv_private_keep ) ; } } if ( arg_private_bin && ! arg_appimage ) { if ( cfg . chrootdir ) fwarning ( \"private-bin<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-bin<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { if ( arg_x11_xorg ) { EUID_USER ( ) ; char * tmp ; if ( asprintf ( & tmp , \"%s,xauth\" , cfg . bin_private_keep ) == - 1 ) errExit ( \"asprintf\" ) ; cfg . bin_private_keep = tmp ; EUID_ROOT ( ) ; } fs_private_bin_list ( ) ; } } if ( arg_private_lib && ! arg_appimage ) { if ( cfg . chrootdir ) fwarning ( \"private-lib<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-lib<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { fs_private_lib ( ) ; } } if ( arg_private_cache ) { if ( cfg . chrootdir ) fwarning ( \"private-cache<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-cache<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else fs_private_cache ( ) ; } if ( arg_private_tmp ) { EUID_USER ( ) ; fs_private_tmp ( ) ; EUID_ROOT ( ) ; } if ( arg_nodbus ) dbus_session_disable ( ) ; if ( cfg . hostname ) fs_hostname ( cfg . hostname ) ; if ( cfg . hosts_file ) fs_mount_hosts_file ( ) ; if ( arg_netns ) netns_mounts ( arg_netns ) ; fs_proc_sys_dev_boot ( ) ; if ( checkcfg ( CFG_DISABLE_MNT ) ) fs_mnt ( 1 ) ; else if ( arg_disable_mnt ) fs_mnt ( 0 ) ; fs_whitelist ( ) ; fs_blacklist ( ) ; if ( arg_nosound ) { pulseaudio_disable ( ) ; fs_dev_disable_sound ( ) ; } else if ( ! arg_noautopulse ) pulseaudio_init ( ) ; if ( arg_no3d ) fs_dev_disable_3d ( ) ; if ( arg_notv ) fs_dev_disable_tv ( ) ; if ( arg_nodvd ) fs_dev_disable_dvd ( ) ; if ( arg_nou2f ) fs_dev_disable_u2f ( ) ; if ( arg_novideo ) fs_dev_disable_video ( ) ; if ( need_preload ) fs_trace ( ) ; fs_resolvconf ( ) ; fs_logger_print ( ) ; fs_logger_change_owner ( ) ; EUID_USER ( ) ; int cwd = 0 ; if ( cfg . cwd ) { if ( chdir ( cfg . cwd ) == 0 ) cwd = 1 ; } if ( ! cwd ) { if ( chdir ( \"/\" ) < 0 ) errExit ( \"chdir\" ) ; if ( cfg . homedir ) { struct stat s ; if ( stat ( cfg . homedir , & s ) == 0 ) { if ( chdir ( cfg . homedir ) < 0 ) errExit ( \"chdir\" ) ; } } } if ( arg_debug ) { char * cpath = get_current_dir_name ( ) ; if ( cpath ) { printf ( \"Current<S2SV_blank>directory:<S2SV_blank>%s\\\\n\" , cpath ) ; free ( cpath ) ; } } EUID_ROOT ( ) ; fs_x11 ( ) ; if ( arg_x11_xorg ) x11_xorg ( ) ; save_umask ( ) ; save_nonewprivs ( ) ; <S2SV_StartBug> set_caps ( ) ; <S2SV_EndBug> save_cpu ( ) ; save_cgroup ( ) ; # ifdef HAVE_SECCOMP # ifdef SYS_socket if ( cfg . protocol ) { if ( arg_debug ) printf ( \"Install<S2SV_blank>protocol<S2SV_blank>filter:<S2SV_blank>%s\\\\n\" , cfg . protocol ) ; seccomp_load ( RUN_SECCOMP_PROTOCOL ) ; protocol_filter_save ( ) ; } else { int rv = unlink ( RUN_SECCOMP_PROTOCOL ) ; ( void ) rv ; } # endif if ( arg_seccomp == 1 ) { if ( cfg . seccomp_list_keep ) seccomp_filter_keep ( ) ; else seccomp_filter_drop ( ) ; } else { int rv = unlink ( RUN_SECCOMP_CFG ) ; rv |= unlink ( RUN_SECCOMP_32 ) ; ( void ) rv ; } if ( arg_memory_deny_write_execute ) { if ( arg_debug ) printf ( \"Install<S2SV_blank>memory<S2SV_blank>write&execute<S2SV_blank>filter\\\\n\" ) ; seccomp_load ( RUN_SECCOMP_MDWX ) ; } else { int rv = unlink ( RUN_SECCOMP_MDWX ) ; ( void ) rv ; } <S2SV_StartBug> # endif <S2SV_EndBug> FILE * rj = create_ready_for_join_file ( ) ; save_nogroups ( ) ; if ( arg_noroot ) { int rv = unshare ( CLONE_NEWUSER ) ; if ( rv == - 1 ) { fwarning ( \"cannot<S2SV_blank>create<S2SV_blank>a<S2SV_blank>new<S2SV_blank>user<S2SV_blank>namespace,<S2SV_blank>going<S2SV_blank>forward<S2SV_blank>without<S2SV_blank>it...\\\\n\" ) ; arg_noroot = 0 ; } } notify_other ( child_to_parent_fds [ 1 ] ) ; close ( child_to_parent_fds [ 1 ] ) ; wait_for_other ( parent_to_child_fds [ 0 ] ) ; close ( parent_to_child_fds [ 0 ] ) ; if ( arg_noroot ) { if ( arg_debug ) printf ( \"noroot<S2SV_blank>user<S2SV_blank>namespace<S2SV_blank>installed\\\\n\" ) ; set_caps ( ) ; } if ( arg_nonewprivs ) { prctl ( PR_SET_NO_NEW_PRIVS , 1 , 0 , 0 , 0 ) ; if ( prctl ( PR_GET_NO_NEW_PRIVS , 0 , 0 , 0 , 0 ) != 1 ) { fwarning ( \"cannot<S2SV_blank>set<S2SV_blank>NO_NEW_PRIVS,<S2SV_blank>it<S2SV_blank>requires<S2SV_blank>a<S2SV_blank>Linux<S2SV_blank>kernel<S2SV_blank>version<S2SV_blank>3.5<S2SV_blank>or<S2SV_blank>newer.\\\\n\" ) ; if ( force_nonewprivs ) { fprintf ( stderr , \"Error:<S2SV_blank>NO_NEW_PRIVS<S2SV_blank>required<S2SV_blank>for<S2SV_blank>this<S2SV_blank>sandbox,<S2SV_blank>exiting<S2SV_blank>...\\\\n\" ) ; exit ( 1 ) ; } } else if ( arg_debug ) printf ( \"NO_NEW_PRIVS<S2SV_blank>set\\\\n\" ) ; } drop_privs ( arg_nogroups ) ; prctl ( PR_SET_PDEATHSIG , SIGKILL , 0 , 0 , 0 ) ; if ( cfg . cpus ) set_cpu_affinity ( ) ; pid_t app_pid = fork ( ) ; if ( app_pid == - 1 ) errExit ( \"fork\" ) ; if ( app_pid == 0 ) { # ifdef HAVE_APPARMOR if ( checkcfg ( CFG_APPARMOR ) && arg_apparmor ) { errno = 0 ; if ( aa_change_onexec ( \"firejail-default\" ) ) { fwarning ( \"Cannot<S2SV_blank>confine<S2SV_blank>the<S2SV_blank>application<S2SV_blank>using<S2SV_blank>AppArmor.\\\\n\" \"Maybe<S2SV_blank>firejail-default<S2SV_blank>AppArmor<S2SV_blank>profile<S2SV_blank>is<S2SV_blank>not<S2SV_blank>loaded<S2SV_blank>into<S2SV_blank>the<S2SV_blank>kernel.\\\\n\" \"As<S2SV_blank>root,<S2SV_blank>run<S2SV_blank>\\\\\"aa-enforce<S2SV_blank>firejail-default\\\\\"<S2SV_blank>to<S2SV_blank>load<S2SV_blank>it.\\\\n\" ) ; } else if ( arg_debug ) printf ( \"AppArmor<S2SV_blank>enabled\\\\n\" ) ; } # endif if ( arg_nice ) set_nice ( cfg . nice ) ; set_rlimits ( ) ; start_application ( 0 , rj ) ; } fclose ( rj ) ; int status = monitor_application ( app_pid ) ; flush_stdin ( ) ; if ( WIFEXITED ( status ) ) { return WEXITSTATUS ( status ) ; } else { return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; <S2SV_ModEnd> save_cpu ( ) <S2SV_ModStart> rv ; } fs_rdonly ( RUN_SECCOMP_DIR ) ; # endif set_caps ( ) ; <S2SV_ModEnd> FILE * rj\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8692\n\n```\nCWE-369 static int jpc_siz_getparms ( jpc_ms_t * ms , jpc_cstate_t * cstate , jas_stream_t * in ) { jpc_siz_t * siz = & ms -> parms . siz ; unsigned int i ; uint_fast8_t tmp ; cstate = 0 ; if ( jpc_getuint16 ( in , & siz -> caps ) || jpc_getuint32 ( in , & siz -> width ) || jpc_getuint32 ( in , & siz -> height ) || jpc_getuint32 ( in , & siz -> xoff ) || jpc_getuint32 ( in , & siz -> yoff ) || jpc_getuint32 ( in , & siz -> tilewidth ) || jpc_getuint32 ( in , & siz -> tileheight ) || jpc_getuint32 ( in , & siz -> tilexoff ) || jpc_getuint32 ( in , & siz -> tileyoff ) || jpc_getuint16 ( in , & siz -> numcomps ) ) { return - 1 ; } if ( ! siz -> width || ! siz -> height || ! siz -> tilewidth || ! siz -> tileheight || ! siz -> numcomps ) { return - 1 ; } if ( ! ( siz -> comps = jas_alloc2 ( siz -> numcomps , sizeof ( jpc_sizcomp_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < siz -> numcomps ; ++ i ) { if ( jpc_getuint8 ( in , & tmp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . hsamp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . vsamp ) ) { jas_free ( siz -> comps ) ; return - 1 ; } <S2SV_StartBug> siz -> comps [ i ] . sgnd = ( tmp >> 7 ) & 1 ; <S2SV_EndBug> siz -> comps [ i ] . prec = ( tmp & 0x7f ) + 1 ; } if ( jas_stream_eof ( in ) ) { jas_free ( siz -> comps ) ; return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; } if ( siz -> comps [ i ] . hsamp == 0 || siz -> comps [ i ] . hsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>XRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . hsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; } if ( siz -> comps [ i ] . vsamp == 0 || siz -> comps [ i ] . vsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>YRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . vsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8675\n\n```\nCWE-476 static int mpeg4video_probe ( AVProbeData * probe_packet ) { uint32_t temp_buffer = - 1 ; int VO = 0 , VOL = 0 , VOP = 0 , VISO = 0 , res = 0 ; int i ; for ( i = 0 ; i < probe_packet -> buf_size ; i ++ ) { temp_buffer = ( temp_buffer << 8 ) + probe_packet -> buf [ i ] ; <S2SV_StartBug> if ( ( temp_buffer & 0xffffff00 ) != 0x100 ) <S2SV_EndBug> continue ; if ( temp_buffer == VOP_START_CODE ) VOP ++ ; else if ( temp_buffer == VISUAL_OBJECT_START_CODE ) VISO ++ ; <S2SV_StartBug> else if ( temp_buffer < 0x120 ) <S2SV_EndBug> VO ++ ; <S2SV_StartBug> else if ( temp_buffer < 0x130 ) <S2SV_EndBug> VOL ++ ; else if ( ! ( 0x1AF < temp_buffer && temp_buffer < 0x1B7 ) && ! ( 0x1B9 < temp_buffer && temp_buffer < 0x1C4 ) ) res ++ ; } if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res == 0 ) return AVPROBE_SCORE_EXTENSION ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( temp_buffer & 0xfffffe00 ) continue ; if ( temp_buffer < 2 <S2SV_ModEnd> ) continue ; <S2SV_ModStart> if ( temp_buffer >= 0x100 && temp_buffer <S2SV_ModStart> else if ( temp_buffer >= 0x120 &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20807\n\n```\nCWE-78 static char_u * do_one_cmd ( char_u * * cmdlinep , int sourcing , # ifdef FEAT_EVAL struct condstack * cstack , # endif char_u * ( * fgetline ) ( int , void * , int ) , void * cookie ) { char_u * p ; linenr_T lnum ; long n ; char * errormsg = NULL ; char_u * after_modifier = NULL ; exarg_T ea ; int save_msg_scroll = msg_scroll ; cmdmod_T save_cmdmod ; int ni ; char_u * cmd ; vim_memset ( & ea , 0 , sizeof ( ea ) ) ; ea . line1 = 1 ; ea . line2 = 1 ; # ifdef FEAT_EVAL ++ ex_nesting_level ; # endif if ( quitmore # ifdef FEAT_EVAL && ! getline_equal ( fgetline , cookie , get_func_line ) # endif && ! getline_equal ( fgetline , cookie , getnextac ) ) -- quitmore ; save_cmdmod = cmdmod ; if ( ( * cmdlinep ) [ 0 ] == '#' && ( * cmdlinep ) [ 1 ] == '!' ) goto doend ; ea . cmd = * cmdlinep ; ea . cmdlinep = cmdlinep ; ea . getline = fgetline ; ea . cookie = cookie ; # ifdef FEAT_EVAL ea . cstack = cstack ; # endif if ( parse_command_modifiers ( & ea , & errormsg , FALSE ) == FAIL ) goto doend ; after_modifier = ea . cmd ; # ifdef FEAT_EVAL ea . skip = did_emsg || got_int || did_throw || ( cstack -> cs_idx >= 0 && ! ( cstack -> cs_flags [ cstack -> cs_idx ] & CSF_ACTIVE ) ) ; # else ea . skip = ( if_level > 0 ) ; # endif cmd = ea . cmd ; ea . cmd = skip_range ( ea . cmd , NULL ) ; if ( * ea . cmd == '*' && vim_strchr ( p_cpo , CPO_STAR ) == NULL ) ea . cmd = skipwhite ( ea . cmd + 1 ) ; p = find_command ( & ea , NULL ) ; # ifdef FEAT_EVAL # ifdef FEAT_PROFILE if ( do_profiling == PROF_YES && ( ! ea . skip || cstack -> cs_idx == 0 || ( cstack -> cs_idx > 0 && ( cstack -> cs_flags [ cstack -> cs_idx - 1 ] & CSF_ACTIVE ) ) ) ) { int skip = did_emsg || got_int || did_throw ; if ( ea . cmdidx == CMD_catch ) skip = ! skip && ! ( cstack -> cs_idx >= 0 && ( cstack -> cs_flags [ cstack -> cs_idx ] & CSF_THROWN ) && ! ( cstack -> cs_flags [ cstack -> cs_idx ] & CSF_CAUGHT ) ) ; else if ( ea . cmdidx == CMD_else || ea . cmdidx == CMD_elseif ) skip = skip || ! ( cstack -> cs_idx >= 0 && ! ( cstack -> cs_flags [ cstack -> cs_idx ] & ( CSF_ACTIVE | CSF_TRUE ) ) ) ; else if ( ea . cmdidx == CMD_finally ) skip = FALSE ; else if ( ea . cmdidx != CMD_endif && ea . cmdidx != CMD_endfor && ea . cmdidx != CMD_endtry && ea . cmdidx != CMD_endwhile ) skip = ea . skip ; if ( ! skip ) { if ( getline_equal ( fgetline , cookie , get_func_line ) ) func_line_exec ( getline_cookie ( fgetline , cookie ) ) ; else if ( getline_equal ( fgetline , cookie , getsourceline ) ) script_line_exec ( ) ; } } # endif dbg_check_breakpoint ( & ea ) ; if ( ! ea . skip && got_int ) { ea . skip = TRUE ; ( void ) do_intthrow ( cstack ) ; } # endif if ( ! IS_USER_CMDIDX ( ea . cmdidx ) ) { if ( ea . cmdidx != CMD_SIZE ) ea . addr_type = cmdnames [ ( int ) ea . cmdidx ] . cmd_addr_type ; else ea . addr_type = ADDR_LINES ; if ( ea . cmdidx == CMD_wincmd && p != NULL ) get_wincmd_addr_type ( skipwhite ( p ) , & ea ) ; } ea . cmd = cmd ; if ( parse_cmd_address ( & ea , & errormsg , FALSE ) == FAIL ) goto doend ; ea . cmd = skipwhite ( ea . cmd ) ; while ( * ea . cmd == ':' ) ea . cmd = skipwhite ( ea . cmd + 1 ) ; if ( * ea . cmd == NUL || * ea . cmd == \\'\"\\' || ( ea . nextcmd = check_nextcmd ( ea . cmd ) ) != NULL ) { if ( ea . skip ) goto doend ; if ( * ea . cmd == '|' || ( exmode_active && ea . line1 != ea . line2 ) ) { ea . cmdidx = CMD_print ; ea . argt = RANGE + COUNT + TRLBAR ; if ( ( errormsg = invalid_range ( & ea ) ) == NULL ) { correct_range ( & ea ) ; ex_print ( & ea ) ; } } else if ( ea . addr_count != 0 ) { if ( ea . line2 > curbuf -> b_ml . ml_line_count ) { if ( vim_strchr ( p_cpo , CPO_MINUS ) != NULL ) ea . line2 = - 1 ; else ea . line2 = curbuf -> b_ml . ml_line_count ; } if ( ea . line2 < 0 ) errormsg = _ ( e_invrange ) ; else { if ( ea . line2 == 0 ) curwin -> w_cursor . lnum = 1 ; else curwin -> w_cursor . lnum = ea . line2 ; beginline ( BL_SOL | BL_FIX ) ; } } goto doend ; } if ( p != NULL && ea . cmdidx == CMD_SIZE && ! ea . skip && ASCII_ISUPPER ( * ea . cmd ) && has_cmdundefined ( ) ) { int ret ; p = ea . cmd ; while ( ASCII_ISALNUM ( * p ) ) ++ p ; p = vim_strnsave ( ea . cmd , ( int ) ( p - ea . cmd ) ) ; ret = apply_autocmds ( EVENT_CMDUNDEFINED , p , p , TRUE , NULL ) ; vim_free ( p ) ; p = ( ret # ifdef FEAT_EVAL && ! aborting ( ) # endif ) ? find_command ( & ea , NULL ) : ea . cmd ; } # ifdef FEAT_USR_CMDS if ( p == NULL ) { if ( ! ea . skip ) errormsg = _ ( \"E464:<S2SV_blank>Ambiguous<S2SV_blank>use<S2SV_blank>of<S2SV_blank>user-defined<S2SV_blank>command\" ) ; goto doend ; } if ( * p == '!' && ea . cmd [ 1 ] == 0151 && ea . cmd [ 0 ] == 78 && ! IS_USER_CMDIDX ( ea . cmdidx ) ) { errormsg = uc_fun_cmd ( ) ; goto doend ; } # endif if ( ea . cmdidx == CMD_SIZE ) { if ( ! ea . skip ) { STRCPY ( IObuff , _ ( \"E492:<S2SV_blank>Not<S2SV_blank>an<S2SV_blank>editor<S2SV_blank>command\" ) ) ; if ( ! sourcing ) { if ( after_modifier != NULL ) append_command ( after_modifier ) ; else append_command ( * cmdlinep ) ; } errormsg = ( char * ) IObuff ; did_emsg_syntax = TRUE ; } goto doend ; } ni = ( ! IS_USER_CMDIDX ( ea . cmdidx ) && ( cmdnames [ ea . cmdidx ] . cmd_func == ex_ni # ifdef HAVE_EX_SCRIPT_NI || cmdnames [ ea . cmdidx ] . cmd_func == ex_script_ni # endif ) ) ; # ifndef FEAT_EVAL if ( ea . cmdidx == CMD_if ) ++ if_level ; if ( if_level ) { if ( ea . cmdidx == CMD_endif ) -- if_level ; goto doend ; } # endif if ( * p == '!' && ea . cmdidx != CMD_substitute && ea . cmdidx != CMD_smagic && ea . cmdidx != CMD_snomagic ) { ++ p ; ea . forceit = TRUE ; } else ea . forceit = FALSE ; if ( ! IS_USER_CMDIDX ( ea . cmdidx ) ) ea . argt = ( long ) cmdnames [ ( int ) ea . cmdidx ] . cmd_argt ; if ( ! ea . skip ) { # ifdef HAVE_SANDBOX if ( sandbox != 0 && ! ( ea . argt & SBOXOK ) ) { errormsg = _ ( e_sandbox ) ; goto doend ; } # endif <S2SV_StartBug> if ( ! curbuf -> b_p_ma && ( ea . argt & MODIFY ) ) <S2SV_EndBug> { errormsg = _ ( e_modifiable ) ; goto doend ; } if ( text_locked ( ) && ! ( ea . argt & CMDWIN ) && ! IS_USER_CMDIDX ( ea . cmdidx ) ) { errormsg = _ ( get_text_locked_msg ( ) ) ; goto doend ; } if ( ! ( ea . argt & CMDWIN ) && ea . cmdidx != CMD_checktime && ea . cmdidx != CMD_edit && ea . cmdidx != CMD_file && ! IS_USER_CMDIDX ( ea . cmdidx ) && curbuf_locked ( ) ) goto doend ; if ( ! ni && ! ( ea . argt & RANGE ) && ea . addr_count > 0 ) { errormsg = _ ( e_norange ) ; goto doend ; } } if ( ! ni && ! ( ea . argt & BANG ) && ea . forceit ) { errormsg = _ ( e_nobang ) ; goto doend ; } if ( ! ea . skip && ! ni ) { if ( ! global_busy && ea . line1 > ea . line2 ) { if ( msg_silent == 0 ) { if ( sourcing || exmode_active ) { errormsg = _ ( \"E493:<S2SV_blank>Backwards<S2SV_blank>range<S2SV_blank>given\" ) ; goto doend ; } if ( ask_yesno ( ( char_u * ) _ ( \"Backwards<S2SV_blank>range<S2SV_blank>given,<S2SV_blank>OK<S2SV_blank>to<S2SV_blank>swap\" ) , FALSE ) != 'y' ) goto doend ; } lnum = ea . line1 ; ea . line1 = ea . line2 ; ea . line2 = lnum ; } if ( ( errormsg = invalid_range ( & ea ) ) != NULL ) goto doend ; } if ( ( ea . argt & NOTADR ) && ea . addr_count == 0 ) ea . line2 = 1 ; correct_range ( & ea ) ; # ifdef FEAT_FOLDING if ( ( ( ea . argt & WHOLEFOLD ) || ea . addr_count >= 2 ) && ! global_busy && ea . addr_type == ADDR_LINES ) { ( void ) hasFolding ( ea . line1 , & ea . line1 , NULL ) ; ( void ) hasFolding ( ea . line2 , NULL , & ea . line2 ) ; } # endif # ifdef FEAT_QUICKFIX p = replace_makeprg ( & ea , p , cmdlinep ) ; if ( p == NULL ) goto doend ; # endif if ( ea . cmdidx == CMD_bang ) ea . arg = p ; else ea . arg = skipwhite ( p ) ; if ( ea . cmdidx == CMD_file && * ea . arg != NUL && curbuf_locked ( ) ) goto doend ; if ( ea . argt & ARGOPT ) while ( ea . arg [ 0 ] == '+' && ea . arg [ 1 ] == '+' ) if ( getargopt ( & ea ) == FAIL && ! ni ) { errormsg = _ ( e_invarg ) ; goto doend ; } if ( ea . cmdidx == CMD_write || ea . cmdidx == CMD_update ) { if ( * ea . arg == '>' ) { if ( * ++ ea . arg != '>' ) { errormsg = _ ( \"E494:<S2SV_blank>Use<S2SV_blank>w<S2SV_blank>or<S2SV_blank>w>>\" ) ; goto doend ; } ea . arg = skipwhite ( ea . arg + 1 ) ; ea . append = TRUE ; } else if ( * ea . arg == '!' && ea . cmdidx == CMD_write ) { ++ ea . arg ; ea . usefilter = TRUE ; } } if ( ea . cmdidx == CMD_read ) { if ( ea . forceit ) { ea . usefilter = TRUE ; ea . forceit = FALSE ; } else if ( * ea . arg == '!' ) { ++ ea . arg ; ea . usefilter = TRUE ; } } if ( ea . cmdidx == CMD_lshift || ea . cmdidx == CMD_rshift ) { ea . amount = 1 ; while ( * ea . arg == * ea . cmd ) { ++ ea . arg ; ++ ea . amount ; } ea . arg = skipwhite ( ea . arg ) ; } if ( ( ea . argt & EDITCMD ) && ! ea . usefilter ) ea . do_ecmd_cmd = getargcmd ( & ea . arg ) ; if ( ( ea . argt & TRLBAR ) && ! ea . usefilter ) separate_nextcmd ( & ea ) ; else if ( ea . cmdidx == CMD_bang || ea . cmdidx == CMD_terminal || ea . cmdidx == CMD_global || ea . cmdidx == CMD_vglobal || ea . usefilter ) { for ( p = ea . arg ; * p ; ++ p ) { if ( * p == '\\\\\\\\' && p [ 1 ] == '\\\\n' ) STRMOVE ( p , p + 1 ) ; else if ( * p == '\\\\n' ) { ea . nextcmd = p + 1 ; * p = NUL ; break ; } } } if ( ( ea . argt & DFLALL ) && ea . addr_count == 0 ) { buf_T * buf ; ea . line1 = 1 ; switch ( ea . addr_type ) { case ADDR_LINES : ea . line2 = curbuf -> b_ml . ml_line_count ; break ; case ADDR_LOADED_BUFFERS : buf = firstbuf ; while ( buf -> b_next != NULL && buf -> b_ml . ml_mfp == NULL ) buf = buf -> b_next ; ea . line1 = buf -> b_fnum ; buf = lastbuf ; while ( buf -> b_prev != NULL && buf -> b_ml . ml_mfp == NULL ) buf = buf -> b_prev ; ea . line2 = buf -> b_fnum ; break ; case ADDR_BUFFERS : ea . line1 = firstbuf -> b_fnum ; ea . line2 = lastbuf -> b_fnum ; break ; case ADDR_WINDOWS : ea . line2 = LAST_WIN_NR ; break ; case ADDR_TABS : ea . line2 = LAST_TAB_NR ; break ; case ADDR_TABS_RELATIVE : ea . line2 = 1 ; break ; case ADDR_ARGUMENTS : if ( ARGCOUNT == 0 ) ea . line1 = ea . line2 = 0 ; else ea . line2 = ARGCOUNT ; break ; # ifdef FEAT_QUICKFIX case ADDR_QUICKFIX : ea . line2 = qf_get_size ( & ea ) ; if ( ea . line2 == 0 ) ea . line2 = 1 ; break ; # endif } } if ( ( ea . argt & REGSTR ) && * ea . arg != NUL && ( ! IS_USER_CMDIDX ( ea . cmdidx ) || * ea . arg != '=' ) && ! ( ( ea . argt & COUNT ) && VIM_ISDIGIT ( * ea . arg ) ) ) { # ifndef FEAT_CLIPBOARD if ( * ea . arg == '*' || * ea . arg == '+' ) { errormsg = _ ( e_invalidreg ) ; goto doend ; } # endif if ( valid_yank_reg ( * ea . arg , ( ea . cmdidx != CMD_put && ! IS_USER_CMDIDX ( ea . cmdidx ) ) ) ) { ea . regname = * ea . arg ++ ; # ifdef FEAT_EVAL if ( ea . arg [ - 1 ] == '=' && ea . arg [ 0 ] != NUL ) { set_expr_line ( vim_strsave ( ea . arg ) ) ; ea . arg += STRLEN ( ea . arg ) ; } # endif ea . arg = skipwhite ( ea . arg ) ; } } if ( ( ea . argt & COUNT ) && VIM_ISDIGIT ( * ea . arg ) && ( ! ( ea . argt & BUFNAME ) || * ( p = skipdigits ( ea . arg ) ) == NUL || VIM_ISWHITE ( * p ) ) ) { n = getdigits ( & ea . arg ) ; ea . arg = skipwhite ( ea . arg ) ; if ( n <= 0 && ! ni && ( ea . argt & ZEROR ) == 0 ) { errormsg = _ ( e_zerocount ) ; goto doend ; } if ( ea . argt & NOTADR ) { ea . line2 = n ; if ( ea . addr_count == 0 ) ea . addr_count = 1 ; } else { ea . line1 = ea . line2 ; ea . line2 += n - 1 ; ++ ea . addr_count ; if ( ea . addr_type == ADDR_LINES && ea . line2 > curbuf -> b_ml . ml_line_count ) ea . line2 = curbuf -> b_ml . ml_line_count ; } } if ( ea . argt & EXFLAGS ) get_flags ( & ea ) ; if ( ! ni && ! ( ea . argt & EXTRA ) && * ea . arg != NUL && * ea . arg != \\'\"\\' && ( * ea . arg != '|' || ( ea . argt & TRLBAR ) == 0 ) ) { errormsg = _ ( e_trailing ) ; goto doend ; } if ( ! ni && ( ea . argt & NEEDARG ) && * ea . arg == NUL ) { errormsg = _ ( e_argreq ) ; goto doend ; } # ifdef FEAT_EVAL if ( ea . skip ) { switch ( ea . cmdidx ) { case CMD_while : case CMD_endwhile : case CMD_for : case CMD_endfor : case CMD_if : case CMD_elseif : case CMD_else : case CMD_endif : case CMD_try : case CMD_catch : case CMD_finally : case CMD_endtry : case CMD_function : break ; case CMD_aboveleft : case CMD_and : case CMD_belowright : case CMD_botright : case CMD_browse : case CMD_call : case CMD_confirm : case CMD_delfunction : case CMD_djump : case CMD_dlist : case CMD_dsearch : case CMD_dsplit : case CMD_echo : case CMD_echoerr : case CMD_echomsg : case CMD_echon : case CMD_execute : case CMD_filter : case CMD_help : case CMD_hide : case CMD_ijump : case CMD_ilist : case CMD_isearch : case CMD_isplit : case CMD_keepalt : case CMD_keepjumps : case CMD_keepmarks : case CMD_keeppatterns : case CMD_leftabove : case CMD_let : case CMD_lockmarks : case CMD_lua : case CMD_match : case CMD_mzscheme : case CMD_noautocmd : case CMD_noswapfile : case CMD_perl : case CMD_psearch : case CMD_python : case CMD_py3 : case CMD_python3 : case CMD_return : case CMD_rightbelow : case CMD_ruby : case CMD_silent : case CMD_smagic : case CMD_snomagic : case CMD_substitute : case CMD_syntax : case CMD_tab : case CMD_tcl : case CMD_throw : case CMD_tilde : case CMD_topleft : case CMD_unlet : case CMD_verbose : case CMD_vertical : case CMD_wincmd : break ; default : goto doend ; } } # endif if ( ea . argt & XFILE ) { if ( expand_filename ( & ea , cmdlinep , & errormsg ) == FAIL ) goto doend ; } if ( ( ea . argt & BUFNAME ) && * ea . arg != NUL && ea . addr_count == 0 && ! IS_USER_CMDIDX ( ea . cmdidx ) ) { if ( ea . cmdidx == CMD_bdelete || ea . cmdidx == CMD_bwipeout || ea . cmdidx == CMD_bunload ) p = skiptowhite_esc ( ea . arg ) ; else { p = ea . arg + STRLEN ( ea . arg ) ; while ( p > ea . arg && VIM_ISWHITE ( p [ - 1 ] ) ) -- p ; } ea . line2 = buflist_findpat ( ea . arg , p , ( ea . argt & BUFUNL ) != 0 , FALSE , FALSE ) ; if ( ea . line2 < 0 ) goto doend ; ea . addr_count = 1 ; ea . arg = skipwhite ( p ) ; } if ( ea . cmdidx == CMD_try && ea . did_esilent > 0 ) { emsg_silent -= ea . did_esilent ; if ( emsg_silent < 0 ) emsg_silent = 0 ; ea . did_esilent = 0 ; } # ifdef FEAT_USR_CMDS if ( IS_USER_CMDIDX ( ea . cmdidx ) ) { do_ucmd ( & ea ) ; } else # endif { ea . errmsg = NULL ; ( cmdnames [ ea . cmdidx ] . cmd_func ) ( & ea ) ; if ( ea . errmsg != NULL ) errormsg = _ ( ea . errmsg ) ; } # ifdef FEAT_EVAL if ( need_rethrow ) do_throw ( cstack ) ; else if ( check_cstack ) { if ( source_finished ( fgetline , cookie ) ) do_finish ( & ea , TRUE ) ; else if ( getline_equal ( fgetline , cookie , get_func_line ) && current_func_returned ( ) ) do_return ( & ea , TRUE , FALSE , NULL ) ; } need_rethrow = check_cstack = FALSE ; # endif doend : if ( curwin -> w_cursor . lnum == 0 ) { curwin -> w_cursor . lnum = 1 ; curwin -> w_cursor . col = 0 ; } if ( errormsg != NULL && * errormsg != NUL && ! did_emsg ) { if ( sourcing ) { if ( errormsg != ( char * ) IObuff ) { STRCPY ( IObuff , errormsg ) ; errormsg = ( char * ) IObuff ; } append_command ( * cmdlinep ) ; } emsg ( errormsg ) ; } # ifdef FEAT_EVAL do_errthrow ( cstack , ( ea . cmdidx != CMD_SIZE && ! IS_USER_CMDIDX ( ea . cmdidx ) ) ? cmdnames [ ( int ) ea . cmdidx ] . cmd_name : ( char_u * ) NULL ) ; # endif if ( ea . verbose_save >= 0 ) p_verbose = ea . verbose_save ; free_cmdmod ( ) ; cmdmod = save_cmdmod ; if ( ea . save_msg_silent != - 1 ) { if ( ! did_emsg || msg_silent > ea . save_msg_silent ) msg_silent = ea . save_msg_silent ; emsg_silent -= ea . did_esilent ; if ( emsg_silent < 0 ) emsg_silent = 0 ; msg_scroll = save_msg_scroll ; if ( redirecting ( ) ) msg_col = 0 ; } # ifdef HAVE_SANDBOX if ( ea . did_sandbox ) -- sandbox ; # endif if ( ea . nextcmd && * ea . nextcmd == NUL ) ea . nextcmd = NULL ; # ifdef FEAT_EVAL -- ex_nesting_level ; # endif return ea . nextcmd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif if ( restricted != 0 && ( ea . argt & RESTRICT ) ) { errormsg = _ ( \"E981:<S2SV_blank>Command<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>in<S2SV_blank>rvim\" ) ; goto doend ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1160\n\n```\nCWE-200 int tpm_open ( struct inode * inode , struct file * file ) { int minor = iminor ( inode ) ; struct tpm_chip * chip = NULL , * pos ; rcu_read_lock ( ) ; list_for_each_entry_rcu ( pos , & tpm_chip_list , list ) { if ( pos -> vendor . miscdev . minor == minor ) { chip = pos ; get_device ( chip -> dev ) ; break ; } } rcu_read_unlock ( ) ; if ( ! chip ) return - ENODEV ; if ( test_and_set_bit ( 0 , & chip -> is_open ) ) { dev_dbg ( chip -> dev , \"Another<S2SV_blank>process<S2SV_blank>owns<S2SV_blank>this<S2SV_blank>TPM\\\\n\" ) ; put_device ( chip -> dev ) ; return - EBUSY ; } <S2SV_StartBug> chip -> data_buffer = kmalloc ( TPM_BUFSIZE * sizeof ( u8 ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( chip -> data_buffer == NULL ) { clear_bit ( 0 , & chip -> is_open ) ; put_device ( chip -> dev ) ; return - ENOMEM ; } atomic_set ( & chip -> data_pending , 0 ) ; file -> private_data = chip ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> data_buffer = kzalloc ( TPM_BUFSIZE <S2SV_ModEnd> , GFP_KERNEL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 static int jp2_cdef_getdata ( jp2_box_t * box , jas_stream_t * in ) { jp2_cdef_t * cdef = & box -> data . cdef ; jp2_cdefchan_t * chan ; <S2SV_StartBug> unsigned int channo ; <S2SV_EndBug> if ( jp2_getuint16 ( in , & cdef -> numchans ) ) { return - 1 ; } if ( ! ( cdef -> ents = jas_alloc2 ( cdef -> numchans , sizeof ( jp2_cdefchan_t ) ) ) ) { return - 1 ; } for ( channo = 0 ; channo < cdef -> numchans ; ++ channo ) { chan = & cdef -> ents [ channo ] ; if ( jp2_getuint16 ( in , & chan -> channo ) || jp2_getuint16 ( in , & chan -> type ) || jp2_getuint16 ( in , & chan -> assoc ) ) { return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int channo ; cdef -> ents = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2906\n\n```\nCWE-400 static long pmcraid_ioctl_passthrough ( struct pmcraid_instance * pinstance , unsigned int ioctl_cmd , unsigned int buflen , unsigned long arg ) { struct pmcraid_passthrough_ioctl_buffer * buffer ; struct pmcraid_ioarcb * ioarcb ; struct pmcraid_cmd * cmd ; struct pmcraid_cmd * cancel_cmd ; unsigned long request_buffer ; unsigned long request_offset ; unsigned long lock_flags ; void * ioasa ; u32 ioasc ; int request_size ; int buffer_size ; u8 access , direction ; int rc = 0 ; if ( pinstance -> ioa_reset_in_progress ) { rc = wait_event_interruptible_timeout ( pinstance -> reset_wait_q , ! pinstance -> ioa_reset_in_progress , msecs_to_jiffies ( 10000 ) ) ; if ( ! rc ) return - ETIMEDOUT ; else if ( rc < 0 ) return - ERESTARTSYS ; } if ( pinstance -> ioa_state != IOA_STATE_OPERATIONAL ) { pmcraid_err ( \"IOA<S2SV_blank>is<S2SV_blank>not<S2SV_blank>operational\\\\n\" ) ; return - ENOTTY ; } buffer_size = sizeof ( struct pmcraid_passthrough_ioctl_buffer ) ; buffer = kmalloc ( buffer_size , GFP_KERNEL ) ; if ( ! buffer ) { pmcraid_err ( \"no<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>passthrough<S2SV_blank>buffer\\\\n\" ) ; return - ENOMEM ; } request_offset = offsetof ( struct pmcraid_passthrough_ioctl_buffer , request_buffer ) ; request_buffer = arg + request_offset ; rc = __copy_from_user ( buffer , ( struct pmcraid_passthrough_ioctl_buffer * ) arg , sizeof ( struct pmcraid_passthrough_ioctl_buffer ) ) ; ioasa = ( void * ) ( arg + offsetof ( struct pmcraid_passthrough_ioctl_buffer , ioasa ) ) ; if ( rc ) { pmcraid_err ( \"ioctl:<S2SV_blank>can\\'t<S2SV_blank>copy<S2SV_blank>passthrough<S2SV_blank>buffer\\\\n\" ) ; rc = - EFAULT ; goto out_free_buffer ; } request_size = buffer -> ioarcb . data_transfer_length ; if ( buffer -> ioarcb . request_flags0 & TRANSFER_DIR_WRITE ) { access = VERIFY_READ ; direction = DMA_TO_DEVICE ; } else { access = VERIFY_WRITE ; direction = DMA_FROM_DEVICE ; } if ( request_size > 0 ) { rc = access_ok ( access , arg , request_offset + request_size ) ; if ( ! rc ) { rc = - EFAULT ; goto out_free_buffer ; } } else if ( request_size < 0 ) { rc = - EINVAL ; goto out_free_buffer ; } if ( buffer -> ioarcb . add_cmd_param_length > PMCRAID_ADD_CMD_PARAM_LEN ) { rc = - EINVAL ; goto out_free_buffer ; } cmd = pmcraid_get_free_cmd ( pinstance ) ; if ( ! cmd ) { pmcraid_err ( \"free<S2SV_blank>command<S2SV_blank>block<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available\\\\n\" ) ; rc = - ENOMEM ; goto out_free_buffer ; } cmd -> scsi_cmd = NULL ; ioarcb = & ( cmd -> ioa_cb -> ioarcb ) ; ioarcb -> resource_handle = buffer -> ioarcb . resource_handle ; ioarcb -> data_transfer_length = buffer -> ioarcb . data_transfer_length ; ioarcb -> cmd_timeout = buffer -> ioarcb . cmd_timeout ; ioarcb -> request_type = buffer -> ioarcb . request_type ; ioarcb -> request_flags0 = buffer -> ioarcb . request_flags0 ; ioarcb -> request_flags1 = buffer -> ioarcb . request_flags1 ; memcpy ( ioarcb -> cdb , buffer -> ioarcb . cdb , PMCRAID_MAX_CDB_LEN ) ; if ( buffer -> ioarcb . add_cmd_param_length ) { ioarcb -> add_cmd_param_length = buffer -> ioarcb . add_cmd_param_length ; ioarcb -> add_cmd_param_offset = buffer -> ioarcb . add_cmd_param_offset ; memcpy ( ioarcb -> add_data . u . add_cmd_params , buffer -> ioarcb . add_data . u . add_cmd_params , buffer -> ioarcb . add_cmd_param_length ) ; } ioarcb -> hrrq_id = atomic_add_return ( 1 , & ( pinstance -> last_message_id ) ) % pinstance -> num_hrrq ; if ( request_size ) { rc = pmcraid_build_passthrough_ioadls ( cmd , request_size , direction ) ; if ( rc ) { pmcraid_err ( \"couldn\\'t<S2SV_blank>build<S2SV_blank>passthrough<S2SV_blank>ioadls\\\\n\" ) ; goto out_free_buffer ; <S2SV_StartBug> } <S2SV_EndBug> } if ( direction == DMA_TO_DEVICE && request_size > 0 ) { rc = pmcraid_copy_sglist ( cmd -> sglist , request_buffer , request_size , direction ) ; if ( rc ) { pmcraid_err ( \"failed<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>user<S2SV_blank>buffer\\\\n\" ) ; goto out_free_sglist ; } } cmd -> cmd_done = pmcraid_internal_done ; init_completion ( & cmd -> wait_for_completion ) ; cmd -> completion_req = 1 ; pmcraid_info ( \"command(%d)<S2SV_blank>(CDB[0]<S2SV_blank>=<S2SV_blank>%x)<S2SV_blank>for<S2SV_blank>%x\\\\n\" , le32_to_cpu ( cmd -> ioa_cb -> ioarcb . response_handle ) >> 2 , cmd -> ioa_cb -> ioarcb . cdb [ 0 ] , le32_to_cpu ( cmd -> ioa_cb -> ioarcb . resource_handle ) ) ; spin_lock_irqsave ( pinstance -> host -> host_lock , lock_flags ) ; _pmcraid_fire_command ( cmd ) ; spin_unlock_irqrestore ( pinstance -> host -> host_lock , lock_flags ) ; buffer -> ioarcb . cmd_timeout = 0 ; if ( buffer -> ioarcb . cmd_timeout == 0 ) { wait_for_completion ( & cmd -> wait_for_completion ) ; } else if ( ! wait_for_completion_timeout ( & cmd -> wait_for_completion , msecs_to_jiffies ( buffer -> ioarcb . cmd_timeout * 1000 ) ) ) { pmcraid_info ( \"aborting<S2SV_blank>cmd<S2SV_blank>%d<S2SV_blank>(CDB[0]<S2SV_blank>=<S2SV_blank>%x)<S2SV_blank>due<S2SV_blank>to<S2SV_blank>timeout\\\\n\" , le32_to_cpu ( cmd -> ioa_cb -> ioarcb . response_handle >> 2 ) , cmd -> ioa_cb -> ioarcb . cdb [ 0 ] ) ; spin_lock_irqsave ( pinstance -> host -> host_lock , lock_flags ) ; cancel_cmd = pmcraid_abort_cmd ( cmd ) ; spin_unlock_irqrestore ( pinstance -> host -> host_lock , lock_flags ) ; if ( cancel_cmd ) { wait_for_completion ( & cancel_cmd -> wait_for_completion ) ; ioasc = cancel_cmd -> ioa_cb -> ioasa . ioasc ; pmcraid_return_cmd ( cancel_cmd ) ; if ( ioasc == PMCRAID_IOASC_IOA_WAS_RESET || PMCRAID_IOASC_SENSE_KEY ( ioasc ) == 0x00 ) { if ( ioasc != PMCRAID_IOASC_GC_IOARCB_NOTFOUND ) rc = - ETIMEDOUT ; goto out_handle_response ; } } if ( ! wait_for_completion_timeout ( & cmd -> wait_for_completion , msecs_to_jiffies ( 150 * 1000 ) ) ) { pmcraid_reset_bringup ( cmd -> drv_inst ) ; rc = - ETIMEDOUT ; } } out_handle_response : if ( copy_to_user ( ioasa , & cmd -> ioa_cb -> ioasa , sizeof ( struct pmcraid_ioasa ) ) ) { pmcraid_err ( \"failed<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>ioasa<S2SV_blank>buffer<S2SV_blank>to<S2SV_blank>user\\\\n\" ) ; rc = - EFAULT ; } else if ( direction == DMA_FROM_DEVICE && request_size > 0 ) { rc = pmcraid_copy_sglist ( cmd -> sglist , request_buffer , request_size , direction ) ; if ( rc ) { pmcraid_err ( \"failed<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>user<S2SV_blank>buffer\\\\n\" ) ; rc = - EFAULT ; } } out_free_sglist : pmcraid_release_passthrough_ioadls ( cmd , request_size , direction ) ; pmcraid_return_cmd ( cmd ) ; out_free_buffer : kfree ( buffer ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_free_buffer ; } } else if ( request_size < 0 ) { rc = - EINVAL ; goto out_free_buffer ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6560\n\n```\nCWE-436 static gssize find_auth_end ( FlatpakProxyClient * client , Buffer * buffer ) { <S2SV_StartBug> guchar * match ; <S2SV_EndBug> int i ; if ( client -> auth_end_offset > 0 ) { gsize left = strlen ( AUTH_END_STRING ) - client -> auth_end_offset ; <S2SV_StartBug> gsize to_match = MIN ( left , buffer -> pos ) ; <S2SV_EndBug> <S2SV_StartBug> if ( memcmp ( buffer -> data , & AUTH_END_STRING [ client -> auth_end_offset ] , to_match ) == 0 ) <S2SV_EndBug> { client -> auth_end_offset += to_match ; if ( client -> auth_end_offset == strlen ( AUTH_END_STRING ) ) return to_match ; return - 1 ; } client -> auth_end_offset = - 1 ; } match = memmem ( buffer , buffer -> pos , AUTH_END_STRING , strlen ( AUTH_END_STRING ) ) ; if ( match != NULL ) <S2SV_StartBug> return match - buffer -> data + strlen ( AUTH_END_STRING ) ; <S2SV_EndBug> for ( i = MIN ( strlen ( AUTH_END_STRING ) - 1 , buffer -> pos ) ; i > 0 ; i -- ) { if ( memcmp ( buffer -> data + buffer -> pos - i , AUTH_END_STRING , i ) == 0 ) { client -> auth_end_offset = i ; break ; } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer ) { goffset offset = 0 ; gsize original_size = client -> auth_buffer -> len ; g_byte_array_append ( client -> auth_buffer <S2SV_ModEnd> , buffer -> <S2SV_ModStart> , buffer -> data , buffer -> <S2SV_ModStart> pos ) ; while ( TRUE ) { guint8 * line_start = client -> auth_buffer <S2SV_ModEnd> -> data + <S2SV_ModStart> -> data + offset ; gsize remaining_data = client -> auth_buffer -> len - offset ; guint8 * line_end ; line_end = memmem ( line_start , remaining_data , AUTH_LINE_SENTINEL , strlen ( AUTH_LINE_SENTINEL ) ) ; if ( line_end ) { offset = ( line_end + strlen ( AUTH_LINE_SENTINEL ) - line_start ) ; if ( ! auth_line_is_valid ( line_start , line_end ) ) return FIND_AUTH_END_ABORT ; * line_end = 0 ; if ( auth_line_is_begin ( line_start ) ) return offset - original_size ; } else { g_byte_array_remove_range ( client -> auth_buffer , 0 , offset ) ; if ( client -> auth_buffer -> len >= 16 * 1024 ) return FIND_AUTH_END_ABORT ; return FIND_AUTH_END_CONTINUE ; } } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17856\n\n```\nCWE-119 static int check_ptr_alignment ( struct bpf_verifier_env * env , const struct bpf_reg_state * reg , int off , int size ) { bool strict = env -> strict_alignment ; const char * pointer_desc = \"\" ; switch ( reg -> type ) { case PTR_TO_PACKET : case PTR_TO_PACKET_META : return check_pkt_ptr_alignment ( env , reg , off , size , strict ) ; case PTR_TO_MAP_VALUE : pointer_desc = \"value<S2SV_blank>\" ; break ; case PTR_TO_CTX : pointer_desc = \"context<S2SV_blank>\" ; break ; case PTR_TO_STACK : pointer_desc = \"stack<S2SV_blank>\" ; <S2SV_StartBug> break ; <S2SV_EndBug> default : break ; } return check_generic_ptr_alignment ( env , reg , pointer_desc , off , size , strict ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = \"stack<S2SV_blank>\" ; strict = true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_copy_mem8x8_c ( unsigned char * src , int src_stride , unsigned char * dst , int dst_stride ) { int r ; for ( r = 0 ; r < 8 ; r ++ ) { <S2SV_StartBug> # if ! ( CONFIG_FAST_UNALIGNED ) <S2SV_EndBug> dst [ 0 ] = src [ 0 ] ; dst [ 1 ] = src [ 1 ] ; dst [ 2 ] = src [ 2 ] ; dst [ 3 ] = src [ 3 ] ; dst [ 4 ] = src [ 4 ] ; dst [ 5 ] = src [ 5 ] ; dst [ 6 ] = src [ 6 ] ; dst [ 7 ] = src [ 7 ] ; # else ( ( uint32_t * ) dst ) [ 0 ] = ( ( uint32_t * ) src ) [ 0 ] ; ( ( uint32_t * ) dst ) [ 1 ] = ( ( uint32_t * ) src ) [ 1 ] ; # endif src += src_stride ; dst += dst_stride ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memcpy ( dst , src , 8 ) ; <S2SV_ModEnd> src += src_stride\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4343\n\n```\nCWE-415 static OM_uint32 init_ctx_reselect ( OM_uint32 * minor_status , spnego_gss_ctx_id_t sc , OM_uint32 acc_negState , gss_OID supportedMech , gss_buffer_t * responseToken , gss_buffer_t * mechListMIC , OM_uint32 * negState , send_token_flag * tokflag ) { OM_uint32 tmpmin ; <S2SV_StartBug> size_t i ; <S2SV_EndBug> generic_gss_release_oid ( & tmpmin , & sc -> internal_mech ) ; gss_delete_sec_context ( & tmpmin , & sc -> ctx_handle , GSS_C_NO_BUFFER ) ; for ( i = 0 ; i < sc -> mech_set -> count ; i ++ ) { if ( g_OID_equal ( supportedMech , & sc -> mech_set -> elements [ i ] ) ) break ; } if ( i == sc -> mech_set -> count ) return GSS_S_DEFECTIVE_TOKEN ; sc -> internal_mech = & sc -> mech_set -> elements [ i ] ; if ( acc_negState != REQUEST_MIC ) return GSS_S_DEFECTIVE_TOKEN ; sc -> mech_complete = 0 ; sc -> mic_reqd = 1 ; * negState = REQUEST_MIC ; * tokflag = CONT_TOKEN_SEND ; return GSS_S_CONTINUE_NEEDED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t i <S2SV_ModEnd> ; gss_delete_sec_context (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0842\n\n```\nCWE-119 WORD32 ih264d_parse_bslice ( dec_struct_t * ps_dec , UWORD16 u2_first_mb_in_slice ) { dec_pic_params_t * ps_pps = ps_dec -> ps_cur_pps ; dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; UWORD8 u1_ref_idx_re_flag_lx ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; UWORD32 u4_temp , ui_temp1 ; WORD32 i_temp ; WORD32 ret ; { WORD8 * pi1_buf ; WORD16 * pi2_mv = ps_dec -> s_default_mv_pred . i2_mv ; WORD32 * pi4_mv = ( WORD32 * ) pi2_mv ; WORD16 * pi16_refFrame ; pi1_buf = ps_dec -> s_default_mv_pred . i1_ref_frame ; pi16_refFrame = ( WORD16 * ) pi1_buf ; * pi4_mv = 0 ; * ( pi4_mv + 1 ) = 0 ; * pi16_refFrame = OUT_OF_RANGE_REF ; ps_dec -> s_default_mv_pred . u1_col_ref_pic_idx = ( UWORD8 ) - 1 ; ps_dec -> s_default_mv_pred . u1_pic_type = ( UWORD8 ) - 1 ; } ps_slice -> u1_num_ref_idx_active_override_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>num_ref_idx_override_flag\" , ps_slice -> u1_num_ref_idx_active_override_flag ) ; u4_temp = ps_dec -> ps_cur_pps -> u1_num_ref_idx_lx_active [ 0 ] ; ui_temp1 = ps_dec -> ps_cur_pps -> u1_num_ref_idx_lx_active [ 1 ] ; if ( ps_slice -> u1_num_ref_idx_active_override_flag ) { u4_temp = 1 + ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>num_ref_idx_l0_active_minus1\" , u4_temp - 1 ) ; ui_temp1 = 1 + ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>num_ref_idx_l1_active_minus1\" , ui_temp1 - 1 ) ; } { UWORD8 u1_max_ref_idx = MAX_FRAMES ; if ( ps_slice -> u1_field_pic_flag ) { u1_max_ref_idx = MAX_FRAMES << 1 ; } if ( ( u4_temp > u1_max_ref_idx ) || ( ui_temp1 > u1_max_ref_idx ) ) { return ERROR_NUM_REF ; } ps_slice -> u1_num_ref_idx_lx_active [ 0 ] = u4_temp ; ps_slice -> u1_num_ref_idx_lx_active [ 1 ] = ui_temp1 ; } { UWORD8 init_idx_flg = ( ps_dec -> u1_pr_sl_type != ps_dec -> ps_cur_slice -> u1_slice_type ) ; if ( ps_dec -> u1_first_pb_nal_in_pic || ( init_idx_flg & ! ps_dec -> u1_sl_typ_5_9 ) || ps_dec -> u1_num_ref_idx_lx_active_prev != ps_dec -> ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] ) ih264d_init_ref_idx_lx_b ( ps_dec ) ; if ( ps_dec -> u1_first_pb_nal_in_pic & ps_dec -> u1_sl_typ_5_9 ) ps_dec -> u1_first_pb_nal_in_pic = 0 ; } ps_dec -> u1_num_ref_idx_lx_active_prev = ps_dec -> ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] ; u1_ref_idx_re_flag_lx = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>ref_pic_list_reordering_flag_l0\" , u1_ref_idx_re_flag_lx ) ; if ( u1_ref_idx_re_flag_lx ) { WORD8 ret ; ps_dec -> ps_ref_pic_buf_lx [ 0 ] = ps_dec -> ps_dpb_mgr -> ps_mod_dpb [ 0 ] ; ret = ih264d_ref_idx_reordering ( ps_dec , 0 ) ; if ( ret == - 1 ) return ERROR_REFIDX_ORDER_T ; } else ps_dec -> ps_ref_pic_buf_lx [ 0 ] = ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] ; u1_ref_idx_re_flag_lx = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>ref_pic_list_reordering_flag_l1\" , u1_ref_idx_re_flag_lx ) ; if ( u1_ref_idx_re_flag_lx ) { WORD8 ret ; ps_dec -> ps_ref_pic_buf_lx [ 1 ] = ps_dec -> ps_dpb_mgr -> ps_mod_dpb [ 1 ] ; ret = ih264d_ref_idx_reordering ( ps_dec , 1 ) ; if ( ret == - 1 ) return ERROR_REFIDX_ORDER_T ; } else ps_dec -> ps_ref_pic_buf_lx [ 1 ] = ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 1 ] ; { void * * ppv_map_ref_idx_to_poc_lx ; WORD8 idx ; struct pic_buffer_t * ps_pic ; ppv_map_ref_idx_to_poc_lx = ps_dec -> ppv_map_ref_idx_to_poc + FRM_LIST_L0 ; ppv_map_ref_idx_to_poc_lx [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx ++ ; for ( idx = 0 ; idx < ps_dec -> ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] ; idx ++ ) { ps_pic = ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ idx ] ; ppv_map_ref_idx_to_poc_lx [ idx ] = ( ps_pic -> pu1_buf1 ) ; } ppv_map_ref_idx_to_poc_lx = ps_dec -> ppv_map_ref_idx_to_poc + FRM_LIST_L1 ; ppv_map_ref_idx_to_poc_lx [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx ++ ; for ( idx = 0 ; idx < ps_dec -> ps_cur_slice -> u1_num_ref_idx_lx_active [ 1 ] ; idx ++ ) { ps_pic = ps_dec -> ps_ref_pic_buf_lx [ 1 ] [ idx ] ; ppv_map_ref_idx_to_poc_lx [ idx ] = ( ps_pic -> pu1_buf1 ) ; } if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag ) { void * * ppv_map_ref_idx_to_poc_lx_t , * * ppv_map_ref_idx_to_poc_lx_b ; ppv_map_ref_idx_to_poc_lx_t = ps_dec -> ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L0 ; ppv_map_ref_idx_to_poc_lx_b = ps_dec -> ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L0 ; ppv_map_ref_idx_to_poc_lx_t [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx_t ++ ; ppv_map_ref_idx_to_poc_lx_b [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx_b ++ ; for ( idx = 0 ; idx < ps_dec -> ps_cur_slice -> u1_num_ref_idx_lx_active [ 0 ] ; idx ++ ) { ps_pic = ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ idx ] ; ppv_map_ref_idx_to_poc_lx_t [ 0 ] = ( ps_pic -> pu1_buf1 ) ; ppv_map_ref_idx_to_poc_lx_b [ 1 ] = ( ps_pic -> pu1_buf1 ) ; ppv_map_ref_idx_to_poc_lx_b [ 0 ] = ( ps_pic -> pu1_buf1 ) + 1 ; ppv_map_ref_idx_to_poc_lx_t [ 1 ] = ( ps_pic -> pu1_buf1 ) + 1 ; ppv_map_ref_idx_to_poc_lx_t += 2 ; ppv_map_ref_idx_to_poc_lx_b += 2 ; } ppv_map_ref_idx_to_poc_lx_t = ps_dec -> ppv_map_ref_idx_to_poc + TOP_LIST_FLD_L1 ; ppv_map_ref_idx_to_poc_lx_b = ps_dec -> ppv_map_ref_idx_to_poc + BOT_LIST_FLD_L1 ; ppv_map_ref_idx_to_poc_lx_t [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx_t ++ ; ppv_map_ref_idx_to_poc_lx_b [ 0 ] = 0 ; ppv_map_ref_idx_to_poc_lx_b ++ ; for ( idx = 0 ; idx < ps_dec -> ps_cur_slice -> u1_num_ref_idx_lx_active [ 1 ] ; idx ++ ) { UWORD8 u1_tmp_idx = idx << 1 ; ps_pic = ps_dec -> ps_ref_pic_buf_lx [ 1 ] [ idx ] ; ppv_map_ref_idx_to_poc_lx_t [ u1_tmp_idx ] = ( ps_pic -> pu1_buf1 ) ; ppv_map_ref_idx_to_poc_lx_b [ u1_tmp_idx + 1 ] = ( ps_pic -> pu1_buf1 ) ; ppv_map_ref_idx_to_poc_lx_b [ u1_tmp_idx ] = ( ps_pic -> pu1_buf1 ) + 1 ; ppv_map_ref_idx_to_poc_lx_t [ u1_tmp_idx + 1 ] = ( ps_pic -> pu1_buf1 ) + 1 ; } } if ( ps_dec -> u4_num_cores >= 3 ) { WORD32 num_entries ; WORD32 size ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; memcpy ( ( void * ) ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc , ps_dec -> ppv_map_ref_idx_to_poc , size ) ; } } if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag && ( ps_dec -> ps_cur_slice -> u1_field_pic_flag == 0 ) ) { ih264d_convert_frm_mbaff_list ( ps_dec ) ; } if ( ps_pps -> u1_wted_bipred_idc == 1 ) { ret = ih264d_parse_pred_weight_table ( ps_slice , ps_bitstrm ) ; if ( ret != OK ) return ret ; ih264d_form_pred_weight_matrix ( ps_dec ) ; ps_dec -> pu4_wt_ofsts = ps_dec -> pu4_wts_ofsts_mat ; } else if ( ps_pps -> u1_wted_bipred_idc == 2 ) { ps_slice -> u2_log2Y_crwd = 0x0505 ; ps_dec -> pu4_wt_ofsts = ps_dec -> pu4_wts_ofsts_mat ; ih264d_get_implicit_weights ( ps_dec ) ; } else ps_dec -> ps_cur_slice -> u2_log2Y_crwd = 0 ; ps_dec -> ps_parse_cur_slice -> u2_log2Y_crwd = ps_dec -> ps_cur_slice -> u2_log2Y_crwd ; if ( ps_slice -> u1_nal_ref_idc != 0 ) { if ( ! ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read ) <S2SV_StartBug> ps_dec -> u4_bitoffset = ih264d_read_mmco_commands ( ps_dec ) ; <S2SV_EndBug> else ps_bitstrm -> u4_ofst += ps_dec -> u4_bitoffset ; } if ( ps_pps -> u1_entropy_coding_mode == CABAC ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_CABAC_INIT_IDC ) { return ERROR_INV_SLICE_HDR_T ; } ps_slice -> u1_cabac_init_idc = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>cabac_init_idc\" , ps_slice -> u1_cabac_init_idc ) ; } i_temp = ps_pps -> u1_pic_init_qp + ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( ( i_temp < 0 ) || ( i_temp > 51 ) ) { return ERROR_INV_RANGE_QP_T ; } ps_slice -> u1_slice_qp = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_qp_delta\" , ( WORD8 ) ( ps_slice -> u1_slice_qp - ps_pps -> u1_pic_init_qp ) ) ; if ( ps_pps -> u1_deblocking_filter_parameters_present_flag == 1 ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > SLICE_BOUNDARY_DBLK_DISABLED ) { return ERROR_INV_SLICE_HDR_T ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>disable_deblocking_filter_idc\" , u4_temp ) ; ps_slice -> u1_disable_dblk_filter_idc = u4_temp ; if ( u4_temp != 1 ) { i_temp = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) << 1 ; if ( ( MIN_DBLK_FIL_OFF > i_temp ) || ( i_temp > MAX_DBLK_FIL_OFF ) ) { return ERROR_INV_SLICE_HDR_T ; } ps_slice -> i1_slice_alpha_c0_offset = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_alpha_c0_offset_div2\" , ps_slice -> i1_slice_alpha_c0_offset >> 1 ) ; i_temp = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) << 1 ; if ( ( MIN_DBLK_FIL_OFF > i_temp ) || ( i_temp > MAX_DBLK_FIL_OFF ) ) { return ERROR_INV_SLICE_HDR_T ; } ps_slice -> i1_slice_beta_offset = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_beta_offset_div2\" , ps_slice -> i1_slice_beta_offset >> 1 ) ; } else { ps_slice -> i1_slice_alpha_c0_offset = 0 ; ps_slice -> i1_slice_beta_offset = 0 ; } } else { ps_slice -> u1_disable_dblk_filter_idc = 0 ; ps_slice -> i1_slice_alpha_c0_offset = 0 ; ps_slice -> i1_slice_beta_offset = 0 ; } ps_dec -> u1_slice_header_done = 2 ; if ( ps_pps -> u1_entropy_coding_mode ) { SWITCHOFFTRACE ; SWITCHONTRACECABAC ; ps_dec -> pf_parse_inter_slice = ih264d_parse_inter_slice_data_cabac ; ps_dec -> pf_parse_inter_mb = ih264d_parse_bmb_cabac ; ih264d_init_cabac_contexts ( B_SLICE , ps_dec ) ; if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag ) ps_dec -> pf_get_mb_info = ih264d_get_mb_info_cabac_mbaff ; else ps_dec -> pf_get_mb_info = ih264d_get_mb_info_cabac_nonmbaff ; } else { SWITCHONTRACE ; SWITCHOFFTRACECABAC ; ps_dec -> pf_parse_inter_slice = ih264d_parse_inter_slice_data_cavlc ; ps_dec -> pf_parse_inter_mb = ih264d_parse_bmb_cavlc ; if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag ) ps_dec -> pf_get_mb_info = ih264d_get_mb_info_cavlc_mbaff ; else ps_dec -> pf_get_mb_info = ih264d_get_mb_info_cavlc_nonmbaff ; } ret = ih264d_cal_col_pic ( ps_dec ) ; if ( ret != OK ) return ret ; ps_dec -> u1_B = 1 ; ps_dec -> pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_bmb ; ret = ps_dec -> pf_parse_inter_slice ( ps_dec , ps_slice , u2_first_mb_in_slice ) ; if ( ret != OK ) return ret ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> u1_dpb_commands_read ) { i_temp = ih264d_read_mmco_commands ( ps_dec ) ; if ( i_temp < 0 ) { return ERROR_DBP_MANAGER_T ; } <S2SV_ModStart> -> u4_bitoffset = i_temp ; } <S2SV_ModEnd> else ps_bitstrm ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16546\n\n```\nCWE-119 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; one = 1 ; image = AcquireImage ( image_info , exception ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; Rec2 . RecordLength = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec . RecordLength ) ; if ( Rec . RecordLength > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> resolution . x = BitmapHeader1 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > <S2SV_StartBug> ( Rec2 . RecordLength - 2 - 2 ) / 3 ) <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> resolution . x = BitmapHeader2 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; UnpackRaster : status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp <= 16 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp , exception ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ReplaceImageInList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > ( Rec2 . RecordLength - 2 - 2 ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; image -> rows = Bitmap2Header1 . Height ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk + 1 , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( image , BImgBuff , i , bpp , exception ) ; } if ( BImgBuff ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp , exception ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; if ( WPG_Palette . StartIndex > WPG_Palette . NumOfEntries\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><codec><S2SV_blank><width><S2SV_blank><height><S2SV_blank><infile><S2SV_blank><outfile><S2SV_blank>\" \"<keyframe-interval><S2SV_blank>[<error-resilient>]\\\\nSee<S2SV_blank>comments<S2SV_blank>in<S2SV_blank>\" \"simple_encoder.c<S2SV_blank>for<S2SV_blank>more<S2SV_blank>information.\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15901\n\n```\nCWE-269 int main ( int argc , char * * argv ) { const char * safepath = SAFE_PATH ; const char * confpath = NULL ; char * shargv [ ] = { NULL , NULL } ; char * sh ; const char * cmd ; char cmdline [ LINE_MAX ] ; char myname [ _PW_NAME_LEN + 1 ] ; struct passwd * original_pw , * target_pw ; struct rule * rule ; uid_t uid ; uid_t target = 0 ; gid_t groups [ NGROUPS_MAX + 1 ] ; int ngroups ; int i , ch ; int sflag = 0 ; int nflag = 0 ; char cwdpath [ PATH_MAX ] ; const char * cwd ; char * login_style = NULL ; char * * envp ; # ifndef linux setprogname ( \"doas\" ) ; # endif # ifndef linux closefrom ( STDERR_FILENO + 1 ) ; # endif uid = getuid ( ) ; while ( ( ch = getopt ( argc , argv , \"a:C:nsu:\" ) ) != - 1 ) { switch ( ch ) { case 'a' : login_style = optarg ; break ; case 'C' : confpath = optarg ; break ; case 'u' : if ( parseuid ( optarg , & target ) != 0 ) errx ( 1 , \"unknown<S2SV_blank>user\" ) ; break ; case 'n' : nflag = 1 ; break ; case 's' : sflag = 1 ; break ; default : usage ( ) ; break ; } } argv += optind ; argc -= optind ; if ( confpath ) { if ( sflag ) usage ( ) ; } else if ( ( ! sflag && ! argc ) || ( sflag && argc ) ) usage ( ) ; original_pw = getpwuid ( uid ) ; if ( ! original_pw ) err ( 1 , \"getpwuid<S2SV_blank>failed\" ) ; if ( strlcpy ( myname , original_pw -> pw_name , sizeof ( myname ) ) >= sizeof ( myname ) ) errx ( 1 , \"pw_name<S2SV_blank>too<S2SV_blank>long\" ) ; ngroups = getgroups ( NGROUPS_MAX , groups ) ; if ( ngroups == - 1 ) err ( 1 , \"can\\'t<S2SV_blank>get<S2SV_blank>groups\" ) ; groups [ ngroups ++ ] = getgid ( ) ; if ( sflag ) { sh = getenv ( \"SHELL\" ) ; if ( sh == NULL || * sh == '\\\\0' ) { shargv [ 0 ] = strdup ( original_pw -> pw_shell ) ; if ( shargv [ 0 ] == NULL ) err ( 1 , NULL ) ; } else shargv [ 0 ] = sh ; argv = shargv ; argc = 1 ; } if ( confpath ) { checkconfig ( confpath , argc , argv , uid , groups , ngroups , target ) ; exit ( 1 ) ; } if ( geteuid ( ) ) errx ( 1 , \"not<S2SV_blank>installed<S2SV_blank>setuid\" ) ; parseconfig ( DOAS_CONF , 1 ) ; ( void ) strlcpy ( cmdline , argv [ 0 ] , sizeof ( cmdline ) ) ; for ( i = 1 ; i < argc ; i ++ ) { if ( strlcat ( cmdline , \"<S2SV_blank>\" , sizeof ( cmdline ) ) >= sizeof ( cmdline ) ) break ; if ( strlcat ( cmdline , argv [ i ] , sizeof ( cmdline ) ) >= sizeof ( cmdline ) ) break ; } cmd = argv [ 0 ] ; if ( ! permit ( uid , groups , ngroups , & rule , target , cmd , ( const char * * ) argv + 1 ) ) { syslog ( LOG_AUTHPRIV | LOG_NOTICE , \"failed<S2SV_blank>command<S2SV_blank>for<S2SV_blank>%s:<S2SV_blank>%s\" , myname , cmdline ) ; errc ( 1 , EPERM , NULL ) ; } if ( ! ( rule -> options & NOPASS ) ) { if ( nflag ) errx ( 1 , \"Authorization<S2SV_blank>required\" ) ; # if defined ( USE_BSD_AUTH ) authuser ( myname , login_style , rule -> options & PERSIST ) ; # elif defined ( USE_PAM ) <S2SV_StartBug> # define PAM_END ( msg ) do { syslog ( LOG_ERR , \"%s:<S2SV_blank>%s\" , msg , pam_strerror ( pamh , pam_err ) ) ; warnx ( \"%s:<S2SV_blank>%s\" , msg , pam_strerror ( pamh , pam_err ) ) ; pam_end ( pamh , pam_err ) ; exit ( EXIT_FAILURE ) ; } while ( 0 ) <S2SV_EndBug> pam_handle_t * pamh = NULL ; int pam_err ; int temp_stdin ; temp_stdin = dup ( STDIN_FILENO ) ; if ( temp_stdin == - 1 ) err ( 1 , \"dup\" ) ; close ( STDIN_FILENO ) ; int temp_stdout = dup ( 1 ) ; if ( temp_stdout == - 1 ) err ( 1 , \"dup\" ) ; close ( 1 ) ; if ( dup2 ( 2 , 1 ) == - 1 ) err ( 1 , \"dup2\" ) ; pam_err = pam_start ( \"doas\" , myname , & pamc , & pamh ) ; if ( pam_err != PAM_SUCCESS ) { if ( pamh != NULL ) PAM_END ( \"pam_start\" ) ; syslog ( LOG_ERR , \"pam_start<S2SV_blank>failed:<S2SV_blank>%s\" , pam_strerror ( pamh , pam_err ) ) ; errx ( EXIT_FAILURE , \"pam_start<S2SV_blank>failed\" ) ; } switch ( pam_err = pam_authenticate ( pamh , PAM_SILENT ) ) { case PAM_SUCCESS : switch ( pam_err = pam_acct_mgmt ( pamh , PAM_SILENT ) ) { case PAM_SUCCESS : break ; case PAM_NEW_AUTHTOK_REQD : pam_err = pam_chauthtok ( pamh , PAM_SILENT | PAM_CHANGE_EXPIRED_AUTHTOK ) ; if ( pam_err != PAM_SUCCESS ) PAM_END ( \"pam_chauthtok\" ) ; break ; case PAM_AUTH_ERR : case PAM_USER_UNKNOWN : case PAM_MAXTRIES : syslog ( LOG_AUTHPRIV | LOG_NOTICE , \"failed<S2SV_blank>auth<S2SV_blank>for<S2SV_blank>%s\" , myname ) ; errx ( EXIT_FAILURE , \"second<S2SV_blank>authentication<S2SV_blank>failed\" ) ; break ; default : PAM_END ( \"pam_acct_mgmt\" ) ; break ; } break ; case PAM_AUTH_ERR : case PAM_USER_UNKNOWN : case PAM_MAXTRIES : syslog ( LOG_AUTHPRIV | LOG_NOTICE , \"failed<S2SV_blank>auth<S2SV_blank>for<S2SV_blank>%s\" , myname ) ; errx ( EXIT_FAILURE , \"authentication<S2SV_blank>failed\" ) ; break ; default : PAM_END ( \"pam_authenticate\" ) ; break ; } pam_end ( pamh , pam_err ) ; # ifndef linux if ( dup2 ( temp_stdin , STDIN_FILENO ) == - 1 ) err ( 1 , \"dup2\" ) ; close ( temp_stdin ) ; # else close ( 1 ) ; if ( dup2 ( temp_stdout , 1 ) == - 1 ) err ( 1 , \"dup2\" ) ; # endif # else # error No auth module ! # endif } target_pw = getpwuid ( target ) ; if ( ! target_pw ) errx ( 1 , \"no<S2SV_blank>passwd<S2SV_blank>entry<S2SV_blank>for<S2SV_blank>target\" ) ; # if defined ( HAVE_LOGIN_CAP_H ) if ( setusercontext ( NULL , target_pw , target , LOGIN_SETGROUP | LOGIN_SETPRIORITY | LOGIN_SETRESOURCES | LOGIN_SETUMASK | LOGIN_SETUSER ) != 0 ) errx ( 1 , \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>user<S2SV_blank>context<S2SV_blank>for<S2SV_blank>target\" ) ; <S2SV_StartBug> # endif <S2SV_EndBug> if ( getcwd ( cwdpath , sizeof ( cwdpath ) ) == NULL ) cwd = \"(failed)\" ; else cwd = cwdpath ; <S2SV_StartBug> # ifndef HAVE_LOGIN_CAP_H <S2SV_EndBug> if ( target != 0 ) setuid ( target ) ; if ( geteuid ( ) == ROOT_UID ) setuid ( ROOT_UID ) ; # endif syslog ( LOG_AUTHPRIV | LOG_INFO , \"%s<S2SV_blank>ran<S2SV_blank>command<S2SV_blank>%s<S2SV_blank>as<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s\" , myname , cmdline , target_pw -> pw_name , cwd ) ; envp = prepenv ( rule , original_pw , target_pw ) ; if ( rule -> cmd ) { if ( setenv ( \"PATH\" , safepath , 1 ) == - 1 ) err ( 1 , \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>PATH<S2SV_blank>\\'%s\\'\" , safepath ) ; } execvpe ( cmd , argv , envp ) ; if ( errno == ENOENT ) errx ( 1 , \"%s:<S2SV_blank>command<S2SV_blank>not<S2SV_blank>found\" , cmd ) ; err ( 1 , \"%s\" , cmd ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EXIT_FAILURE ) ; \\\\\\n} <S2SV_ModEnd> while ( 0 <S2SV_ModStart> ) ; # else # if defined ( __linux__ ) || defined ( __FreeBSD__ ) || defined ( __NetBSD__ ) if ( setresgid ( target_pw -> pw_gid , target_pw -> pw_gid , target_pw -> pw_gid ) == - 1 ) err ( 1 , \"setresgid\" ) ; # else if ( setregid ( target_pw -> pw_gid , target_pw -> pw_gid ) == - 1 ) err ( 1 , \"setregid\" ) ; # endif if ( initgroups ( target_pw -> pw_name , target_pw -> pw_gid ) == - 1 ) err ( 1 , \"initgroups\" ) ; # if defined ( __linux__ ) || defined ( __FreeBSD__ ) || defined ( __NetBSD__ ) if ( setresuid ( target , target , target ) == - 1 ) err ( 1 , \"setresuid\" ) ; # else if ( setreuid ( target , target ) == - 1 ) err ( 1 , \"setreuid\" ) ; # endif # <S2SV_ModStart> = cwdpath ; <S2SV_ModEnd> syslog ( LOG_AUTHPRIV\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12655\n\n```\nCWE-400 static xfs_failaddr_t xfs_agf_verify ( struct xfs_buf * bp ) { struct xfs_mount * mp = bp -> b_mount ; struct xfs_agf * agf = XFS_BUF_TO_AGF ( bp ) ; if ( xfs_sb_version_hascrc ( & mp -> m_sb ) ) { if ( ! uuid_equal ( & agf -> agf_uuid , & mp -> m_sb . sb_meta_uuid ) ) return __this_address ; if ( ! xfs_log_check_lsn ( mp , be64_to_cpu ( XFS_BUF_TO_AGF ( bp ) -> agf_lsn ) ) ) return __this_address ; } if ( ! xfs_verify_magic ( bp , agf -> agf_magicnum ) ) return __this_address ; if ( ! ( XFS_AGF_GOOD_VERSION ( be32_to_cpu ( agf -> agf_versionnum ) ) && be32_to_cpu ( agf -> agf_freeblks ) <= be32_to_cpu ( agf -> agf_length ) && be32_to_cpu ( agf -> agf_flfirst ) < xfs_agfl_size ( mp ) && be32_to_cpu ( agf -> agf_fllast ) < xfs_agfl_size ( mp ) && <S2SV_StartBug> be32_to_cpu ( agf -> agf_flcount ) <= xfs_agfl_size ( mp ) ) ) <S2SV_EndBug> return __this_address ; if ( be32_to_cpu ( agf -> agf_levels [ XFS_BTNUM_BNO ] ) < 1 || be32_to_cpu ( agf -> agf_levels [ XFS_BTNUM_CNT ] ) < 1 || be32_to_cpu ( agf -> agf_levels [ XFS_BTNUM_BNO ] ) > XFS_BTREE_MAXLEVELS || be32_to_cpu ( agf -> agf_levels [ XFS_BTNUM_CNT ] ) > XFS_BTREE_MAXLEVELS ) return __this_address ; if ( xfs_sb_version_hasrmapbt ( & mp -> m_sb ) && ( be32_to_cpu ( agf -> agf_levels [ XFS_BTNUM_RMAP ] ) < 1 || be32_to_cpu ( agf -> agf_levels [ XFS_BTNUM_RMAP ] ) > XFS_BTREE_MAXLEVELS ) ) return __this_address ; <S2SV_StartBug> if ( bp -> b_pag && be32_to_cpu ( agf -> agf_seqno ) != bp -> b_pag -> pag_agno ) <S2SV_EndBug> return __this_address ; if ( xfs_sb_version_haslazysbcount ( & mp -> m_sb ) && <S2SV_StartBug> be32_to_cpu ( agf -> agf_btreeblks ) > be32_to_cpu ( agf -> agf_length ) ) <S2SV_EndBug> return __this_address ; if ( xfs_sb_version_hasreflink ( & mp -> m_sb ) && ( be32_to_cpu ( agf -> agf_refcount_level ) < 1 || be32_to_cpu ( agf -> agf_refcount_level ) > XFS_BTREE_MAXLEVELS ) ) return __this_address ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( mp ) ) ) return __this_address ; if ( be32_to_cpu ( agf -> agf_length ) > mp -> m_sb . sb_dblocks ) return __this_address ; if ( be32_to_cpu ( agf -> agf_freeblks ) < be32_to_cpu ( agf -> agf_longest ) || be32_to_cpu ( agf -> agf_freeblks ) > be32_to_cpu ( agf -> agf_length <S2SV_ModStart> ; if ( xfs_sb_version_hasrmapbt ( & mp -> m_sb ) && be32_to_cpu ( agf -> agf_rmap_blocks ) > be32_to_cpu ( agf -> agf_length ) ) return __this_address ; if ( <S2SV_ModStart> agf_btreeblks ) > be32_to_cpu ( agf -> agf_length ) ) return __this_address ; if ( xfs_sb_version_hasreflink ( & mp -> m_sb ) && be32_to_cpu ( agf -> agf_refcount_blocks ) >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4470\n\n```\nCWE-264 static inline int ip_ufo_append_data ( struct sock * sk , struct sk_buff_head * queue , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int hh_len , int fragheaderlen , int transhdrlen , int maxfraglen , unsigned int flags ) { struct sk_buff * skb ; int err ; if ( ( skb = skb_peek_tail ( queue ) ) == NULL ) { skb = sock_alloc_send_skb ( sk , hh_len + fragheaderlen + transhdrlen + 20 , ( flags & MSG_DONTWAIT ) , & err ) ; if ( skb == NULL ) return err ; skb_reserve ( skb , hh_len ) ; skb_put ( skb , fragheaderlen + transhdrlen ) ; skb_reset_network_header ( skb ) ; skb -> transport_header = skb -> network_header + fragheaderlen ; <S2SV_StartBug> skb -> ip_summed = CHECKSUM_PARTIAL ; <S2SV_EndBug> skb -> csum = 0 ; skb_shinfo ( skb ) -> gso_size = maxfraglen - fragheaderlen ; skb_shinfo ( skb ) -> gso_type = SKB_GSO_UDP ; <S2SV_StartBug> __skb_queue_tail ( queue , skb ) ; <S2SV_EndBug> } return skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; skb -> csum = 0 ; __skb_queue_tail ( queue , skb ) ; } else if ( skb_is_gso ( skb ) ) { goto append ; } skb -> <S2SV_ModStart> ip_summed = CHECKSUM_PARTIAL <S2SV_ModEnd> ; skb_shinfo ( <S2SV_ModStart> = SKB_GSO_UDP ; append : <S2SV_ModEnd> return skb_append_datato_frags (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17407\n\n```\nCWE-119 static void t1_check_unusual_charstring ( void ) { char * p = strstr ( t1_line_array , charstringname ) + strlen ( charstringname ) ; int i ; if ( sscanf ( p , \"%i\" , & i ) != 1 ) { strcpy ( t1_buf_array , t1_line_array ) ; * ( strend ( t1_buf_array ) - 1 ) = '<S2SV_blank>' ; t1_getline ( ) ; <S2SV_StartBug> strcat ( t1_buf_array , t1_line_array ) ; <S2SV_EndBug> strcpy ( t1_line_array , t1_buf_array ) ; t1_line_ptr = eol ( t1_line_array ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; alloc_array ( t1_buf , strlen ( t1_line_array ) + strlen ( t1_buf_array ) + 1 , T1_BUF_SIZE ) ; <S2SV_ModStart> t1_buf_array , t1_line_array ) ; alloc_array ( t1_line , strlen ( t1_buf_array ) + 1 , T1_BUF_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 int psf_binheader_readf ( SF_PRIVATE * psf , char const * format , ... ) { va_list argptr ; sf_count_t * countptr , countdata ; unsigned char * ucptr , sixteen_bytes [ 16 ] ; unsigned int * intptr , intdata ; unsigned short * shortptr ; char * charptr ; float * floatptr ; double * doubleptr ; char c ; <S2SV_StartBug> int byte_count = 0 , count ; <S2SV_EndBug> if ( ! format ) return psf_ftell ( psf ) ; va_start ( argptr , format ) ; while ( ( c = * format ++ ) ) <S2SV_StartBug> { switch ( c ) <S2SV_EndBug> { case 'e' : psf -> rwf_endian = SF_ENDIAN_LITTLE ; break ; case 'E' : psf -> rwf_endian = SF_ENDIAN_BIG ; break ; case 'm' : intptr = va_arg ( argptr , unsigned int * ) ; <S2SV_StartBug> ucptr = ( unsigned char * ) intptr ; <S2SV_EndBug> byte_count += header_read ( psf , ucptr , sizeof ( int ) ) ; * intptr = GET_MARKER ( ucptr ) ; break ; case 'h' : <S2SV_StartBug> intptr = va_arg ( argptr , unsigned int * ) ; <S2SV_EndBug> ucptr = ( unsigned char * ) intptr ; byte_count += header_read ( psf , sixteen_bytes , sizeof ( sixteen_bytes ) ) ; { int k ; intdata = 0 ; for ( k = 0 ; k < 16 ; k ++ ) intdata ^= sixteen_bytes [ k ] << k ; } * intptr = intdata ; break ; case '1' : charptr = va_arg ( argptr , char * ) ; * charptr = 0 ; byte_count += header_read ( psf , charptr , sizeof ( char ) ) ; break ; case '2' : shortptr = va_arg ( argptr , unsigned short * ) ; * shortptr = 0 ; ucptr = ( unsigned char * ) shortptr ; byte_count += header_read ( psf , ucptr , sizeof ( short ) ) ; if ( psf -> rwf_endian == SF_ENDIAN_BIG ) * shortptr = GET_BE_SHORT ( ucptr ) ; else * shortptr = GET_LE_SHORT ( ucptr ) ; break ; case '3' : intptr = va_arg ( argptr , unsigned int * ) ; * intptr = 0 ; byte_count += header_read ( psf , sixteen_bytes , 3 ) ; if ( psf -> rwf_endian == SF_ENDIAN_BIG ) * intptr = GET_BE_3BYTE ( sixteen_bytes ) ; else * intptr = GET_LE_3BYTE ( sixteen_bytes ) ; break ; case '4' : intptr = va_arg ( argptr , unsigned int * ) ; * intptr = 0 ; ucptr = ( unsigned char * ) intptr ; byte_count += header_read ( psf , ucptr , sizeof ( int ) ) ; if ( psf -> rwf_endian == SF_ENDIAN_BIG ) * intptr = psf_get_be32 ( ucptr , 0 ) ; else * intptr = psf_get_le32 ( ucptr , 0 ) ; break ; case '8' : countptr = va_arg ( argptr , sf_count_t * ) ; * countptr = 0 ; byte_count += header_read ( psf , sixteen_bytes , 8 ) ; if ( psf -> rwf_endian == SF_ENDIAN_BIG ) countdata = psf_get_be64 ( sixteen_bytes , 0 ) ; else countdata = psf_get_le64 ( sixteen_bytes , 0 ) ; * countptr = countdata ; break ; case 'f' : floatptr = va_arg ( argptr , float * ) ; * floatptr = 0.0 ; byte_count += header_read ( psf , floatptr , sizeof ( float ) ) ; if ( psf -> rwf_endian == SF_ENDIAN_BIG ) * floatptr = float32_be_read ( ( unsigned char * ) floatptr ) ; else * floatptr = float32_le_read ( ( unsigned char * ) floatptr ) ; break ; case 'd' : doubleptr = va_arg ( argptr , double * ) ; * doubleptr = 0.0 ; byte_count += header_read ( psf , doubleptr , sizeof ( double ) ) ; if ( psf -> rwf_endian == SF_ENDIAN_BIG ) * doubleptr = double64_be_read ( ( unsigned char * ) doubleptr ) ; else * doubleptr = double64_le_read ( ( unsigned char * ) doubleptr ) ; break ; case 's' : psf_log_printf ( psf , \"Format<S2SV_blank>conversion<S2SV_blank>\\'s\\'<S2SV_blank>not<S2SV_blank>implemented<S2SV_blank>yet.\\\\n\" ) ; break ; case 'b' : charptr = va_arg ( argptr , char * ) ; count = va_arg ( argptr , size_t ) ; <S2SV_StartBug> if ( count > 0 ) <S2SV_EndBug> byte_count += header_read ( psf , charptr , count ) ; break ; <S2SV_StartBug> case 'G' : <S2SV_EndBug> charptr = va_arg ( argptr , char * ) ; count = va_arg ( argptr , size_t ) ; <S2SV_StartBug> if ( count > 0 ) <S2SV_EndBug> byte_count += header_gets ( psf , charptr , count ) ; break ; case 'z' : psf_log_printf ( psf , \"Format<S2SV_blank>conversion<S2SV_blank>\\'z\\'<S2SV_blank>not<S2SV_blank>implemented<S2SV_blank>yet.\\\\n\" ) ; break ; case 'p' : count = va_arg ( argptr , size_t ) ; <S2SV_StartBug> header_seek ( psf , count , SEEK_SET ) ; <S2SV_EndBug> byte_count = count ; break ; case 'j' : count = va_arg ( argptr , size_t ) ; if ( count ) { header_seek ( psf , count , SEEK_CUR ) ; <S2SV_StartBug> byte_count += count ; <S2SV_EndBug> } ; break ; default : psf_log_printf ( psf , \"***<S2SV_blank>Invalid<S2SV_blank>format<S2SV_blank>specifier<S2SV_blank>`%c\\'\\\\n\" , c ) ; psf -> error = SFE_INTERNAL ; break ; } ; } ; va_end ( argptr ) ; return byte_count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 , count = 0 <S2SV_ModStart> ) ) { if ( psf -> header . indx + 16 >= psf -> header . len && psf_bump_header_allocation ( psf , 16 ) ) return count ; <S2SV_ModStart> * ) ; * intptr = 0 ; <S2SV_ModStart> int * ) ; * intptr = 0 <S2SV_ModStart> size_t ) ; memset ( charptr , 0 , count ) ; byte_count += header_read ( psf , charptr , count ) ; break ; case 'G' : charptr = va_arg ( argptr , char * ) ; count = va_arg ( argptr , size_t ) ; memset ( charptr , 0 , count ) ; if ( psf -> header . indx + count >= psf -> header . len && psf_bump_header_allocation ( psf , count ) ) return 0 ; byte_count += header_gets <S2SV_ModEnd> ( psf , <S2SV_ModStart> break ; case 'z' : psf_log_printf ( psf , \"Format<S2SV_blank>conversion<S2SV_blank>\\'z\\'<S2SV_blank>not<S2SV_blank>implemented<S2SV_blank>yet.\\\\n\" ) ; break ; case 'p' : <S2SV_ModEnd> count = va_arg <S2SV_ModStart> size_t ) ; header_seek ( psf , count , SEEK_SET ) ; byte_count = count ; break ; case 'j' <S2SV_ModEnd> : count = <S2SV_ModStart> , count , <S2SV_ModEnd> SEEK_CUR ) ; <S2SV_ModStart> byte_count += count <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0204\n\n```\nCWE-310 int ssl3_accept ( SSL * s ) { BUF_MEM * buf ; unsigned long alg_k , Time = ( unsigned long ) time ( NULL ) ; void ( * cb ) ( const SSL * ssl , int type , int val ) = NULL ; int ret = - 1 ; int new_state , state , skip = 0 ; RAND_add ( & Time , sizeof ( Time ) , 0 ) ; ERR_clear_error ( ) ; clear_sys_error ( ) ; if ( s -> info_callback != NULL ) cb = s -> info_callback ; else if ( s -> ctx -> info_callback != NULL ) cb = s -> ctx -> info_callback ; s -> in_handshake ++ ; if ( ! SSL_in_init ( s ) || SSL_in_before ( s ) ) SSL_clear ( s ) ; if ( s -> cert == NULL ) { SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_NO_CERTIFICATE_SET ) ; return ( - 1 ) ; } # ifndef OPENSSL_NO_HEARTBEATS if ( s -> tlsext_hb_pending ) { s -> tlsext_hb_pending = 0 ; s -> tlsext_hb_seq ++ ; } # endif for ( ; ; ) { state = s -> state ; switch ( s -> state ) { case SSL_ST_RENEGOTIATE : s -> renegotiate = 1 ; case SSL_ST_BEFORE : case SSL_ST_ACCEPT : case SSL_ST_BEFORE | SSL_ST_ACCEPT : case SSL_ST_OK | SSL_ST_ACCEPT : s -> server = 1 ; if ( cb != NULL ) cb ( s , SSL_CB_HANDSHAKE_START , 1 ) ; if ( ( s -> version >> 8 ) != 3 ) { SSLerr ( SSL_F_SSL3_ACCEPT , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } if ( ! ssl_security ( s , SSL_SECOP_VERSION , 0 , s -> version , NULL ) ) { SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_VERSION_TOO_LOW ) ; return - 1 ; } s -> type = SSL_ST_ACCEPT ; if ( s -> init_buf == NULL ) { if ( ( buf = BUF_MEM_new ( ) ) == NULL ) { ret = - 1 ; goto end ; } if ( ! BUF_MEM_grow ( buf , SSL3_RT_MAX_PLAIN_LENGTH ) ) { BUF_MEM_free ( buf ) ; ret = - 1 ; goto end ; } s -> init_buf = buf ; } if ( ! ssl3_setup_buffers ( s ) ) { ret = - 1 ; goto end ; } s -> init_num = 0 ; s -> s3 -> flags &= ~ TLS1_FLAGS_SKIP_CERT_VERIFY ; s -> s3 -> flags &= ~ SSL3_FLAGS_CCS_OK ; s -> s3 -> change_cipher_spec = 0 ; if ( s -> state != SSL_ST_RENEGOTIATE ) { if ( ! ssl_init_wbio_buffer ( s , 1 ) ) { ret = - 1 ; goto end ; } ssl3_init_finished_mac ( s ) ; s -> state = SSL3_ST_SR_CLNT_HELLO_A ; s -> ctx -> stats . sess_accept ++ ; } else if ( ! s -> s3 -> send_connection_binding && ! ( s -> options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION ) ) { SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED ) ; ssl3_send_alert ( s , SSL3_AL_FATAL , SSL_AD_HANDSHAKE_FAILURE ) ; ret = - 1 ; goto end ; } else { s -> ctx -> stats . sess_accept_renegotiate ++ ; s -> state = SSL3_ST_SW_HELLO_REQ_A ; } break ; case SSL3_ST_SW_HELLO_REQ_A : case SSL3_ST_SW_HELLO_REQ_B : s -> shutdown = 0 ; ret = ssl3_send_hello_request ( s ) ; if ( ret <= 0 ) goto end ; s -> s3 -> tmp . next_state = SSL3_ST_SW_HELLO_REQ_C ; s -> state = SSL3_ST_SW_FLUSH ; s -> init_num = 0 ; ssl3_init_finished_mac ( s ) ; break ; case SSL3_ST_SW_HELLO_REQ_C : s -> state = SSL_ST_OK ; break ; case SSL3_ST_SR_CLNT_HELLO_A : case SSL3_ST_SR_CLNT_HELLO_B : case SSL3_ST_SR_CLNT_HELLO_C : ret = ssl3_get_client_hello ( s ) ; if ( ret <= 0 ) goto end ; # ifndef OPENSSL_NO_SRP s -> state = SSL3_ST_SR_CLNT_HELLO_D ; case SSL3_ST_SR_CLNT_HELLO_D : { int al ; if ( ( ret = ssl_check_srp_ext_ClientHello ( s , & al ) ) < 0 ) { s -> rwstate = SSL_X509_LOOKUP ; goto end ; } if ( ret != SSL_ERROR_NONE ) { ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; if ( al != TLS1_AD_UNKNOWN_PSK_IDENTITY ) SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_CLIENTHELLO_TLSEXT ) ; ret = SSL_TLSEXT_ERR_ALERT_FATAL ; ret = - 1 ; goto end ; } } # endif s -> renegotiate = 2 ; s -> state = SSL3_ST_SW_SRVR_HELLO_A ; s -> init_num = 0 ; break ; case SSL3_ST_SW_SRVR_HELLO_A : case SSL3_ST_SW_SRVR_HELLO_B : ret = ssl3_send_server_hello ( s ) ; if ( ret <= 0 ) goto end ; # ifndef OPENSSL_NO_TLSEXT if ( s -> hit ) { if ( s -> tlsext_ticket_expected ) s -> state = SSL3_ST_SW_SESSION_TICKET_A ; else s -> state = SSL3_ST_SW_CHANGE_A ; } # else if ( s -> hit ) s -> state = SSL3_ST_SW_CHANGE_A ; # endif else s -> state = SSL3_ST_SW_CERT_A ; s -> init_num = 0 ; break ; case SSL3_ST_SW_CERT_A : case SSL3_ST_SW_CERT_B : if ( ! ( s -> s3 -> tmp . new_cipher -> algorithm_auth & ( SSL_aNULL | SSL_aKRB5 | SSL_aSRP ) ) && ! ( s -> s3 -> tmp . new_cipher -> algorithm_mkey & SSL_kPSK ) ) { ret = ssl3_send_server_certificate ( s ) ; if ( ret <= 0 ) goto end ; # ifndef OPENSSL_NO_TLSEXT if ( s -> tlsext_status_expected ) s -> state = SSL3_ST_SW_CERT_STATUS_A ; else s -> state = SSL3_ST_SW_KEY_EXCH_A ; } else { skip = 1 ; s -> state = SSL3_ST_SW_KEY_EXCH_A ; } # else } else skip = 1 ; s -> state = SSL3_ST_SW_KEY_EXCH_A ; # endif s -> init_num = 0 ; break ; case SSL3_ST_SW_KEY_EXCH_A : case SSL3_ST_SW_KEY_EXCH_B : alg_k = s -> s3 -> tmp . new_cipher -> algorithm_mkey ; <S2SV_StartBug> if ( ( s -> options & SSL_OP_EPHEMERAL_RSA ) <S2SV_EndBug> # ifndef OPENSSL_NO_KRB5 && ! ( alg_k & SSL_kKRB5 ) # endif ) <S2SV_StartBug> s -> s3 -> tmp . use_rsa_tmp = 1 ; <S2SV_EndBug> else s -> s3 -> tmp . use_rsa_tmp = 0 ; if ( s -> s3 -> tmp . use_rsa_tmp # ifndef OPENSSL_NO_PSK || ( ( alg_k & SSL_kPSK ) && s -> ctx -> psk_identity_hint ) # endif # ifndef OPENSSL_NO_SRP || ( alg_k & SSL_kSRP ) # endif || ( alg_k & SSL_kDHE ) || ( alg_k & SSL_kECDHE ) || ( ( alg_k & SSL_kRSA ) && ( s -> cert -> pkeys [ SSL_PKEY_RSA_ENC ] . privatekey == NULL || ( SSL_C_IS_EXPORT ( s -> s3 -> tmp . new_cipher ) && EVP_PKEY_size ( s -> cert -> pkeys [ SSL_PKEY_RSA_ENC ] . privatekey ) * 8 > SSL_C_EXPORT_PKEYLENGTH ( s -> s3 -> tmp . new_cipher ) ) ) ) ) { ret = ssl3_send_server_key_exchange ( s ) ; if ( ret <= 0 ) goto end ; } else skip = 1 ; s -> state = SSL3_ST_SW_CERT_REQ_A ; s -> init_num = 0 ; break ; case SSL3_ST_SW_CERT_REQ_A : case SSL3_ST_SW_CERT_REQ_B : if ( ! ( s -> verify_mode & SSL_VERIFY_PEER ) || ( ( s -> session -> peer != NULL ) && ( s -> verify_mode & SSL_VERIFY_CLIENT_ONCE ) ) || ( ( s -> s3 -> tmp . new_cipher -> algorithm_auth & SSL_aNULL ) && ! ( s -> verify_mode & SSL_VERIFY_FAIL_IF_NO_PEER_CERT ) ) || ( s -> s3 -> tmp . new_cipher -> algorithm_auth & SSL_aKRB5 ) || ( s -> s3 -> tmp . new_cipher -> algorithm_auth & SSL_aSRP ) || ( s -> s3 -> tmp . new_cipher -> algorithm_mkey & SSL_kPSK ) ) { skip = 1 ; s -> s3 -> tmp . cert_request = 0 ; s -> state = SSL3_ST_SW_SRVR_DONE_A ; if ( s -> s3 -> handshake_buffer ) if ( ! ssl3_digest_cached_records ( s ) ) return - 1 ; } else { s -> s3 -> tmp . cert_request = 1 ; ret = ssl3_send_certificate_request ( s ) ; if ( ret <= 0 ) goto end ; # ifndef NETSCAPE_HANG_BUG s -> state = SSL3_ST_SW_SRVR_DONE_A ; # else s -> state = SSL3_ST_SW_FLUSH ; s -> s3 -> tmp . next_state = SSL3_ST_SR_CERT_A ; # endif s -> init_num = 0 ; } break ; case SSL3_ST_SW_SRVR_DONE_A : case SSL3_ST_SW_SRVR_DONE_B : ret = ssl3_send_server_done ( s ) ; if ( ret <= 0 ) goto end ; s -> s3 -> tmp . next_state = SSL3_ST_SR_CERT_A ; s -> state = SSL3_ST_SW_FLUSH ; s -> init_num = 0 ; break ; case SSL3_ST_SW_FLUSH : s -> rwstate = SSL_WRITING ; if ( BIO_flush ( s -> wbio ) <= 0 ) { ret = - 1 ; goto end ; } s -> rwstate = SSL_NOTHING ; s -> state = s -> s3 -> tmp . next_state ; break ; case SSL3_ST_SR_CERT_A : case SSL3_ST_SR_CERT_B : if ( s -> s3 -> tmp . cert_request ) { ret = ssl3_get_client_certificate ( s ) ; if ( ret <= 0 ) goto end ; } s -> init_num = 0 ; s -> state = SSL3_ST_SR_KEY_EXCH_A ; break ; case SSL3_ST_SR_KEY_EXCH_A : case SSL3_ST_SR_KEY_EXCH_B : ret = ssl3_get_client_key_exchange ( s ) ; if ( ret <= 0 ) goto end ; if ( ret == 2 ) { # if defined ( OPENSSL_NO_TLSEXT ) || defined ( OPENSSL_NO_NEXTPROTONEG ) s -> state = SSL3_ST_SR_FINISHED_A ; # else if ( s -> s3 -> next_proto_neg_seen ) s -> state = SSL3_ST_SR_NEXT_PROTO_A ; else s -> state = SSL3_ST_SR_FINISHED_A ; # endif s -> init_num = 0 ; } else if ( SSL_USE_SIGALGS ( s ) ) { s -> state = SSL3_ST_SR_CERT_VRFY_A ; s -> init_num = 0 ; if ( ! s -> session -> peer ) break ; if ( ! s -> s3 -> handshake_buffer ) { SSLerr ( SSL_F_SSL3_ACCEPT , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } s -> s3 -> flags |= TLS1_FLAGS_KEEP_HANDSHAKE ; if ( ! ssl3_digest_cached_records ( s ) ) return - 1 ; } else { int offset = 0 ; int dgst_num ; s -> state = SSL3_ST_SR_CERT_VRFY_A ; s -> init_num = 0 ; if ( s -> s3 -> handshake_buffer ) if ( ! ssl3_digest_cached_records ( s ) ) return - 1 ; for ( dgst_num = 0 ; dgst_num < SSL_MAX_DIGEST ; dgst_num ++ ) if ( s -> s3 -> handshake_dgst [ dgst_num ] ) { int dgst_size ; s -> method -> ssl3_enc -> cert_verify_mac ( s , EVP_MD_CTX_type ( s -> s3 -> handshake_dgst [ dgst_num ] ) , & ( s -> s3 -> tmp . cert_verify_md [ offset ] ) ) ; dgst_size = EVP_MD_CTX_size ( s -> s3 -> handshake_dgst [ dgst_num ] ) ; if ( dgst_size < 0 ) { ret = - 1 ; goto end ; } offset += dgst_size ; } } break ; case SSL3_ST_SR_CERT_VRFY_A : case SSL3_ST_SR_CERT_VRFY_B : if ( ! s -> s3 -> change_cipher_spec ) s -> s3 -> flags |= SSL3_FLAGS_CCS_OK ; ret = ssl3_get_cert_verify ( s ) ; if ( ret <= 0 ) goto end ; # if defined ( OPENSSL_NO_TLSEXT ) || defined ( OPENSSL_NO_NEXTPROTONEG ) s -> state = SSL3_ST_SR_FINISHED_A ; # else if ( s -> s3 -> next_proto_neg_seen ) s -> state = SSL3_ST_SR_NEXT_PROTO_A ; else s -> state = SSL3_ST_SR_FINISHED_A ; # endif s -> init_num = 0 ; break ; # if ! defined ( OPENSSL_NO_TLSEXT ) && ! defined ( OPENSSL_NO_NEXTPROTONEG ) case SSL3_ST_SR_NEXT_PROTO_A : case SSL3_ST_SR_NEXT_PROTO_B : if ( ! s -> s3 -> change_cipher_spec ) s -> s3 -> flags |= SSL3_FLAGS_CCS_OK ; ret = ssl3_get_next_proto ( s ) ; if ( ret <= 0 ) goto end ; s -> init_num = 0 ; s -> state = SSL3_ST_SR_FINISHED_A ; break ; # endif case SSL3_ST_SR_FINISHED_A : case SSL3_ST_SR_FINISHED_B : if ( ! s -> s3 -> change_cipher_spec ) s -> s3 -> flags |= SSL3_FLAGS_CCS_OK ; ret = ssl3_get_finished ( s , SSL3_ST_SR_FINISHED_A , SSL3_ST_SR_FINISHED_B ) ; if ( ret <= 0 ) goto end ; if ( s -> hit ) s -> state = SSL_ST_OK ; # ifndef OPENSSL_NO_TLSEXT else if ( s -> tlsext_ticket_expected ) s -> state = SSL3_ST_SW_SESSION_TICKET_A ; # endif else s -> state = SSL3_ST_SW_CHANGE_A ; s -> init_num = 0 ; break ; # ifndef OPENSSL_NO_TLSEXT case SSL3_ST_SW_SESSION_TICKET_A : case SSL3_ST_SW_SESSION_TICKET_B : ret = ssl3_send_newsession_ticket ( s ) ; if ( ret <= 0 ) goto end ; s -> state = SSL3_ST_SW_CHANGE_A ; s -> init_num = 0 ; break ; case SSL3_ST_SW_CERT_STATUS_A : case SSL3_ST_SW_CERT_STATUS_B : ret = ssl3_send_cert_status ( s ) ; if ( ret <= 0 ) goto end ; s -> state = SSL3_ST_SW_KEY_EXCH_A ; s -> init_num = 0 ; break ; # endif case SSL3_ST_SW_CHANGE_A : case SSL3_ST_SW_CHANGE_B : s -> session -> cipher = s -> s3 -> tmp . new_cipher ; if ( ! s -> method -> ssl3_enc -> setup_key_block ( s ) ) { ret = - 1 ; goto end ; } ret = ssl3_send_change_cipher_spec ( s , SSL3_ST_SW_CHANGE_A , SSL3_ST_SW_CHANGE_B ) ; if ( ret <= 0 ) goto end ; s -> state = SSL3_ST_SW_FINISHED_A ; s -> init_num = 0 ; if ( ! s -> method -> ssl3_enc -> change_cipher_state ( s , SSL3_CHANGE_CIPHER_SERVER_WRITE ) ) { ret = - 1 ; goto end ; } break ; case SSL3_ST_SW_FINISHED_A : case SSL3_ST_SW_FINISHED_B : ret = ssl3_send_finished ( s , SSL3_ST_SW_FINISHED_A , SSL3_ST_SW_FINISHED_B , s -> method -> ssl3_enc -> server_finished_label , s -> method -> ssl3_enc -> server_finished_label_len ) ; if ( ret <= 0 ) goto end ; s -> state = SSL3_ST_SW_FLUSH ; if ( s -> hit ) { # if defined ( OPENSSL_NO_TLSEXT ) || defined ( OPENSSL_NO_NEXTPROTONEG ) s -> s3 -> tmp . next_state = SSL3_ST_SR_FINISHED_A ; # else if ( s -> s3 -> next_proto_neg_seen ) { s -> s3 -> tmp . next_state = SSL3_ST_SR_NEXT_PROTO_A ; } else s -> s3 -> tmp . next_state = SSL3_ST_SR_FINISHED_A ; # endif } else s -> s3 -> tmp . next_state = SSL_ST_OK ; s -> init_num = 0 ; break ; case SSL_ST_OK : ssl3_cleanup_key_block ( s ) ; BUF_MEM_free ( s -> init_buf ) ; s -> init_buf = NULL ; ssl_free_wbio_buffer ( s ) ; s -> init_num = 0 ; if ( s -> renegotiate == 2 ) { s -> renegotiate = 0 ; s -> new_session = 0 ; ssl_update_cache ( s , SSL_SESS_CACHE_SERVER ) ; s -> ctx -> stats . sess_accept_good ++ ; s -> handshake_func = ssl3_accept ; if ( cb != NULL ) cb ( s , SSL_CB_HANDSHAKE_DONE , 1 ) ; } ret = 1 ; goto end ; default : SSLerr ( SSL_F_SSL3_ACCEPT , SSL_R_UNKNOWN_STATE ) ; ret = - 1 ; goto end ; } if ( ! s -> s3 -> tmp . reuse_message && ! skip ) { if ( s -> debug ) { if ( ( ret = BIO_flush ( s -> wbio ) ) <= 0 ) goto end ; } if ( ( cb != NULL ) && ( s -> state != state ) ) { new_state = s -> state ; s -> state = state ; cb ( s , SSL_CB_ACCEPT_LOOP , 1 ) ; s -> state = new_state ; } } skip = 0 ; } end : s -> in_handshake -- ; if ( cb != NULL ) cb ( s , SSL_CB_ACCEPT_EXIT , ret ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> algorithm_mkey ; <S2SV_ModEnd> s -> s3 <S2SV_ModStart> . use_rsa_tmp = 0 ; if ( <S2SV_ModEnd> # ifndef OPENSSL_NO_PSK\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 STATIC int xfs_ioctl_setattr ( xfs_inode_t * ip , struct fsxattr * fa , int mask ) { struct xfs_mount * mp = ip -> i_mount ; struct xfs_trans * tp ; unsigned int lock_flags = 0 ; struct xfs_dquot * udqp = NULL ; struct xfs_dquot * pdqp = NULL ; struct xfs_dquot * olddquot = NULL ; int code ; trace_xfs_ioctl_setattr ( ip ) ; if ( mp -> m_flags & XFS_MOUNT_RDONLY ) return XFS_ERROR ( EROFS ) ; if ( XFS_FORCED_SHUTDOWN ( mp ) ) return XFS_ERROR ( EIO ) ; if ( ( mask & FSX_PROJID ) && ( fa -> fsx_projid > ( __uint16_t ) - 1 ) && ! xfs_sb_version_hasprojid32bit ( & ip -> i_mount -> m_sb ) ) return XFS_ERROR ( EINVAL ) ; if ( XFS_IS_QUOTA_ON ( mp ) && ( mask & FSX_PROJID ) ) { code = xfs_qm_vop_dqalloc ( ip , ip -> i_d . di_uid , ip -> i_d . di_gid , fa -> fsx_projid , XFS_QMOPT_PQUOTA , & udqp , NULL , & pdqp ) ; if ( code ) return code ; } tp = xfs_trans_alloc ( mp , XFS_TRANS_SETATTR_NOT_SIZE ) ; code = xfs_trans_reserve ( tp , & M_RES ( mp ) -> tr_ichange , 0 , 0 ) ; if ( code ) goto error_return ; lock_flags = XFS_ILOCK_EXCL ; xfs_ilock ( ip , lock_flags ) ; if ( ! inode_owner_or_capable ( VFS_I ( ip ) ) ) { code = XFS_ERROR ( EPERM ) ; goto error_return ; } if ( mask & FSX_PROJID ) { if ( current_user_ns ( ) != & init_user_ns ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } if ( XFS_IS_QUOTA_RUNNING ( mp ) && XFS_IS_PQUOTA_ON ( mp ) && xfs_get_projid ( ip ) != fa -> fsx_projid ) { ASSERT ( tp ) ; code = xfs_qm_vop_chown_reserve ( tp , ip , udqp , NULL , pdqp , capable ( CAP_FOWNER ) ? XFS_QMOPT_FORCE_RES : 0 ) ; if ( code ) goto error_return ; } } if ( mask & FSX_EXTSIZE ) { if ( ip -> i_d . di_nextents && ( ( ip -> i_d . di_extsize << mp -> m_sb . sb_blocklog ) != fa -> fsx_extsize ) ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } if ( fa -> fsx_extsize != 0 ) { xfs_extlen_t size ; xfs_fsblock_t extsize_fsb ; extsize_fsb = XFS_B_TO_FSB ( mp , fa -> fsx_extsize ) ; if ( extsize_fsb > MAXEXTLEN ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } if ( XFS_IS_REALTIME_INODE ( ip ) || ( ( mask & FSX_XFLAGS ) && ( fa -> fsx_xflags & XFS_XFLAG_REALTIME ) ) ) { size = mp -> m_sb . sb_rextsize << mp -> m_sb . sb_blocklog ; } else { size = mp -> m_sb . sb_blocksize ; if ( extsize_fsb > mp -> m_sb . sb_agblocks / 2 ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } } if ( fa -> fsx_extsize % size ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } } } if ( mask & FSX_XFLAGS ) { if ( ( ip -> i_d . di_nextents || ip -> i_delayed_blks ) && ( XFS_IS_REALTIME_INODE ( ip ) ) != ( fa -> fsx_xflags & XFS_XFLAG_REALTIME ) ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } if ( ( fa -> fsx_xflags & XFS_XFLAG_REALTIME ) ) { if ( ( mp -> m_sb . sb_rblocks == 0 ) || ( mp -> m_sb . sb_rextsize == 0 ) || ( ip -> i_d . di_extsize % mp -> m_sb . sb_rextsize ) ) { code = XFS_ERROR ( EINVAL ) ; goto error_return ; } } if ( ( ip -> i_d . di_flags & ( XFS_DIFLAG_IMMUTABLE | XFS_DIFLAG_APPEND ) || ( fa -> fsx_xflags & ( XFS_XFLAG_IMMUTABLE | XFS_XFLAG_APPEND ) ) ) && ! capable ( CAP_LINUX_IMMUTABLE ) ) { code = XFS_ERROR ( EPERM ) ; goto error_return ; } } xfs_trans_ijoin ( tp , ip , 0 ) ; if ( mask & FSX_PROJID ) { if ( ( ip -> i_d . di_mode & ( S_ISUID | S_ISGID ) ) && <S2SV_StartBug> ! inode_capable ( VFS_I ( ip ) , CAP_FSETID ) ) <S2SV_EndBug> ip -> i_d . di_mode &= ~ ( S_ISUID | S_ISGID ) ; if ( xfs_get_projid ( ip ) != fa -> fsx_projid ) { if ( XFS_IS_QUOTA_RUNNING ( mp ) && XFS_IS_PQUOTA_ON ( mp ) ) { olddquot = xfs_qm_vop_chown ( tp , ip , & ip -> i_pdquot , pdqp ) ; } xfs_set_projid ( ip , fa -> fsx_projid ) ; if ( ip -> i_d . di_version == 1 ) xfs_bump_ino_vers2 ( tp , ip ) ; } } if ( mask & FSX_EXTSIZE ) ip -> i_d . di_extsize = fa -> fsx_extsize >> mp -> m_sb . sb_blocklog ; if ( mask & FSX_XFLAGS ) { xfs_set_diflags ( ip , fa -> fsx_xflags ) ; xfs_diflags_to_linux ( ip ) ; } xfs_trans_ichgtime ( tp , ip , XFS_ICHGTIME_CHG ) ; xfs_trans_log_inode ( tp , ip , XFS_ILOG_CORE ) ; XFS_STATS_INC ( xs_ig_attrchg ) ; if ( mp -> m_flags & XFS_MOUNT_WSYNC ) xfs_trans_set_sync ( tp ) ; code = xfs_trans_commit ( tp , 0 ) ; xfs_iunlock ( ip , lock_flags ) ; xfs_qm_dqrele ( olddquot ) ; xfs_qm_dqrele ( udqp ) ; xfs_qm_dqrele ( pdqp ) ; return code ; error_return : xfs_qm_dqrele ( udqp ) ; xfs_qm_dqrele ( pdqp ) ; xfs_trans_cancel ( tp , 0 ) ; if ( lock_flags ) xfs_iunlock ( ip , lock_flags ) ; return code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) && ! capable_wrt_inode_uidgid <S2SV_ModEnd> ( VFS_I (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8690\n\n```\nCWE-476 jas_image_t * bmp_decode ( jas_stream_t * in , char * optstr ) { jas_image_t * image ; bmp_hdr_t hdr ; bmp_info_t * info ; uint_fast16_t cmptno ; jas_image_cmptparm_t cmptparms [ 3 ] ; jas_image_cmptparm_t * cmptparm ; uint_fast16_t numcmpts ; long n ; if ( optstr ) { jas_eprintf ( \"warning:<S2SV_blank>ignoring<S2SV_blank>BMP<S2SV_blank>decoder<S2SV_blank>options\\\\n\" ) ; } jas_eprintf ( \"THE<S2SV_blank>BMP<S2SV_blank>FORMAT<S2SV_blank>IS<S2SV_blank>NOT<S2SV_blank>FULLY<S2SV_blank>SUPPORTED!\\\\n\" \"THAT<S2SV_blank>IS,<S2SV_blank>THE<S2SV_blank>JASPER<S2SV_blank>SOFTWARE<S2SV_blank>CANNOT<S2SV_blank>DECODE<S2SV_blank>ALL<S2SV_blank>TYPES<S2SV_blank>OF<S2SV_blank>BMP<S2SV_blank>DATA.\\\\n\" \"IF<S2SV_blank>YOU<S2SV_blank>HAVE<S2SV_blank>ANY<S2SV_blank>PROBLEMS,<S2SV_blank>PLEASE<S2SV_blank>TRY<S2SV_blank>CONVERTING<S2SV_blank>YOUR<S2SV_blank>IMAGE<S2SV_blank>DATA\\\\n\" \"TO<S2SV_blank>THE<S2SV_blank>PNM<S2SV_blank>FORMAT,<S2SV_blank>AND<S2SV_blank>USING<S2SV_blank>THIS<S2SV_blank>FORMAT<S2SV_blank>INSTEAD.\\\\n\" ) ; if ( bmp_gethdr ( in , & hdr ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>header\\\\n\" ) ; return 0 ; } <S2SV_StartBug> if ( ! ( info = bmp_getinfo ( in ) ) ) { <S2SV_EndBug> jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>info\\\\n\" ) ; return 0 ; <S2SV_StartBug> } <S2SV_EndBug> if ( ! bmp_issupported ( & hdr , info ) ) { jas_eprintf ( \"error:<S2SV_blank>unsupported<S2SV_blank>BMP<S2SV_blank>encoding\\\\n\" ) ; bmp_info_destroy ( info ) ; return 0 ; } if ( ( n = hdr . off - ( BMP_HDRLEN + BMP_INFOLEN + BMP_PALLEN ( info ) ) ) < 0 ) { jas_eprintf ( \"error:<S2SV_blank>possibly<S2SV_blank>bad<S2SV_blank>bitmap<S2SV_blank>offset?\\\\n\" ) ; return 0 ; } if ( n > 0 ) { jas_eprintf ( \"skipping<S2SV_blank>unknown<S2SV_blank>data<S2SV_blank>in<S2SV_blank>BMP<S2SV_blank>file\\\\n\" ) ; if ( bmp_gobble ( in , n ) ) { bmp_info_destroy ( info ) ; return 0 ; } } numcmpts = bmp_numcmpts ( info ) ; for ( cmptno = 0 , cmptparm = cmptparms ; cmptno < numcmpts ; ++ cmptno , ++ cmptparm ) { cmptparm -> tlx = 0 ; cmptparm -> tly = 0 ; cmptparm -> hstep = 1 ; cmptparm -> vstep = 1 ; cmptparm -> width = info -> width ; cmptparm -> height = info -> height ; cmptparm -> prec = 8 ; cmptparm -> sgnd = false ; } if ( ! ( image = jas_image_create ( numcmpts , cmptparms , JAS_CLRSPC_UNKNOWN ) ) ) { bmp_info_destroy ( info ) ; return 0 ; } if ( numcmpts == 3 ) { jas_image_setclrspc ( image , JAS_CLRSPC_SRGB ) ; jas_image_setcmpttype ( image , 0 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_R ) ) ; jas_image_setcmpttype ( image , 1 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_G ) ) ; jas_image_setcmpttype ( image , 2 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_B ) ) ; } else { jas_image_setclrspc ( image , JAS_CLRSPC_SGRAY ) ; jas_image_setcmpttype ( image , 0 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_GRAY_Y ) ) ; } if ( bmp_getdata ( in , info , image ) ) { bmp_info_destroy ( info ) ; jas_image_destroy ( image ) ; return 0 ; } bmp_info_destroy ( info ) ; return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } JAS_DBGLOG ( 1 , ( \"BMP<S2SV_blank>header:<S2SV_blank>magic<S2SV_blank>0x%x;<S2SV_blank>siz<S2SV_blank>%d;<S2SV_blank>res1<S2SV_blank>%d;<S2SV_blank>res2<S2SV_blank>%d;<S2SV_blank>off<S2SV_blank>%d\\\\n\" , hdr . magic , hdr . siz , hdr . reserved1 , hdr . reserved2 , hdr . off ) ) ; <S2SV_ModStart> 0 ; } JAS_DBGLOG ( 1 , ( \"BMP<S2SV_blank>information:<S2SV_blank>len<S2SV_blank>%d;<S2SV_blank>width<S2SV_blank>%d;<S2SV_blank>height<S2SV_blank>%d;<S2SV_blank>numplanes<S2SV_blank>%d;<S2SV_blank>\" \"depth<S2SV_blank>%d;<S2SV_blank>enctype<S2SV_blank>%d;<S2SV_blank>siz<S2SV_blank>%d;<S2SV_blank>hres<S2SV_blank>%d;<S2SV_blank>vres<S2SV_blank>%d;<S2SV_blank>numcolors<S2SV_blank>%d;<S2SV_blank>\" \"mincolors<S2SV_blank>%d\\\\n\" , info -> len , info -> width , info -> height , info -> numplanes , info -> depth , info -> enctype , info -> siz , info -> hres , info -> vres , info -> numcolors , info -> mincolors ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 static void doGet ( HttpRequest req , HttpResponse res ) { set_content_type ( res , \"text/html\" ) ; if ( ACTION ( HOME ) ) { LOCK ( Run . mutex ) do_home ( res ) ; END_LOCK ; <S2SV_StartBug> } else if ( ACTION ( RUN ) ) { <S2SV_EndBug> <S2SV_StartBug> handle_run ( req , res ) ; <S2SV_EndBug> } else if ( ACTION ( TEST ) ) { <S2SV_StartBug> is_monit_running ( res ) ; <S2SV_EndBug> } else if ( ACTION ( VIEWLOG ) ) { do_viewlog ( req , res ) ; } else if ( ACTION ( ABOUT ) ) { do_about ( res ) ; } else if ( ACTION ( FAVICON ) ) { printFavicon ( res ) ; } else if ( ACTION ( PING ) ) { do_ping ( res ) ; } else if ( ACTION ( GETID ) ) { do_getid ( res ) ; <S2SV_StartBug> } else if ( ACTION ( STATUS ) ) { <S2SV_EndBug> print_status ( req , res , 1 ) ; } else if ( ACTION ( STATUS2 ) ) { print_status ( req , res , 2 ) ; } else if ( ACTION ( SUMMARY ) ) { print_summary ( req , res ) ; } else if ( ACTION ( REPORT ) ) { _printReport ( req , res ) ; } else if ( ACTION ( DOACTION ) ) { handle_do_action ( req , res ) ; } else { handle_action ( req , res ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ACTION ( RUNTIME <S2SV_ModEnd> ) ) { <S2SV_ModStart> ) ) { handle_runtime <S2SV_ModEnd> ( req , <S2SV_ModStart> { is_monit_running ( <S2SV_ModEnd> res ) ; <S2SV_ModStart> ; } else { handle_service <S2SV_ModEnd> ( req ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8374\n\n```\nCWE-200 int btrfs_truncate_inode_items ( struct btrfs_trans_handle * trans , struct btrfs_root * root , struct inode * inode , u64 new_size , u32 min_type ) { struct btrfs_path * path ; struct extent_buffer * leaf ; struct btrfs_file_extent_item * fi ; struct btrfs_key key ; struct btrfs_key found_key ; u64 extent_start = 0 ; u64 extent_num_bytes = 0 ; u64 extent_offset = 0 ; u64 item_end = 0 ; u64 last_size = new_size ; u32 found_type = ( u8 ) - 1 ; int found_extent ; int del_item ; int pending_del_nr = 0 ; int pending_del_slot = 0 ; int extent_type = - 1 ; int ret ; int err = 0 ; u64 ino = btrfs_ino ( inode ) ; u64 bytes_deleted = 0 ; bool be_nice = 0 ; bool should_throttle = 0 ; bool should_end = 0 ; BUG_ON ( new_size > 0 && min_type != BTRFS_EXTENT_DATA_KEY ) ; if ( ! btrfs_is_free_space_inode ( inode ) && test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) ) be_nice = 1 ; path = btrfs_alloc_path ( ) ; if ( ! path ) return - ENOMEM ; path -> reada = - 1 ; if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) || root == root -> fs_info -> tree_root ) btrfs_drop_extent_cache ( inode , ALIGN ( new_size , root -> sectorsize ) , ( u64 ) - 1 , 0 ) ; if ( min_type == 0 && root == BTRFS_I ( inode ) -> root ) btrfs_kill_delayed_inode_items ( inode ) ; key . objectid = ino ; key . offset = ( u64 ) - 1 ; key . type = ( u8 ) - 1 ; search_again : if ( be_nice && bytes_deleted > 32 * 1024 * 1024 ) { if ( btrfs_should_end_transaction ( trans , root ) ) { err = - EAGAIN ; goto error ; } } path -> leave_spinning = 1 ; ret = btrfs_search_slot ( trans , root , & key , path , - 1 , 1 ) ; if ( ret < 0 ) { err = ret ; goto out ; } if ( ret > 0 ) { if ( path -> slots [ 0 ] == 0 ) goto out ; path -> slots [ 0 ] -- ; } while ( 1 ) { fi = NULL ; leaf = path -> nodes [ 0 ] ; btrfs_item_key_to_cpu ( leaf , & found_key , path -> slots [ 0 ] ) ; found_type = found_key . type ; if ( found_key . objectid != ino ) break ; if ( found_type < min_type ) break ; item_end = found_key . offset ; if ( found_type == BTRFS_EXTENT_DATA_KEY ) { fi = btrfs_item_ptr ( leaf , path -> slots [ 0 ] , struct btrfs_file_extent_item ) ; extent_type = btrfs_file_extent_type ( leaf , fi ) ; if ( extent_type != BTRFS_FILE_EXTENT_INLINE ) { item_end += btrfs_file_extent_num_bytes ( leaf , fi ) ; } else if ( extent_type == BTRFS_FILE_EXTENT_INLINE ) { item_end += btrfs_file_extent_inline_len ( leaf , path -> slots [ 0 ] , fi ) ; } item_end -- ; } if ( found_type > min_type ) { del_item = 1 ; } else { if ( item_end < new_size ) break ; if ( found_key . offset >= new_size ) del_item = 1 ; else del_item = 0 ; } found_extent = 0 ; if ( found_type != BTRFS_EXTENT_DATA_KEY ) goto delete ; if ( del_item ) last_size = found_key . offset ; else last_size = new_size ; if ( extent_type != BTRFS_FILE_EXTENT_INLINE ) { u64 num_dec ; extent_start = btrfs_file_extent_disk_bytenr ( leaf , fi ) ; if ( ! del_item ) { u64 orig_num_bytes = btrfs_file_extent_num_bytes ( leaf , fi ) ; extent_num_bytes = ALIGN ( new_size - found_key . offset , root -> sectorsize ) ; btrfs_set_file_extent_num_bytes ( leaf , fi , extent_num_bytes ) ; num_dec = ( orig_num_bytes - extent_num_bytes ) ; if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) && extent_start != 0 ) inode_sub_bytes ( inode , num_dec ) ; btrfs_mark_buffer_dirty ( leaf ) ; } else { extent_num_bytes = btrfs_file_extent_disk_num_bytes ( leaf , fi ) ; extent_offset = found_key . offset - btrfs_file_extent_offset ( leaf , fi ) ; num_dec = btrfs_file_extent_num_bytes ( leaf , fi ) ; if ( extent_start != 0 ) { found_extent = 1 ; if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) ) inode_sub_bytes ( inode , num_dec ) ; } } } else if ( extent_type == BTRFS_FILE_EXTENT_INLINE ) { if ( ! del_item && <S2SV_StartBug> btrfs_file_extent_compression ( leaf , fi ) == 0 && <S2SV_EndBug> btrfs_file_extent_encryption ( leaf , fi ) == 0 && btrfs_file_extent_other_encoding ( leaf , fi ) == 0 ) { u32 size = new_size - found_key . offset ; <S2SV_StartBug> if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) ) <S2SV_EndBug> inode_sub_bytes ( inode , item_end + 1 - <S2SV_StartBug> new_size ) ; <S2SV_EndBug> btrfs_set_file_extent_ram_bytes ( leaf , fi , size ) ; size = btrfs_file_extent_calc_inline_size ( size ) ; btrfs_truncate_item ( root , path , size , 1 ) ; } else if ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) ) { inode_sub_bytes ( inode , item_end + 1 - found_key . offset ) ; } } delete : if ( del_item ) { if ( ! pending_del_nr ) { pending_del_slot = path -> slots [ 0 ] ; pending_del_nr = 1 ; } else if ( pending_del_nr && path -> slots [ 0 ] + 1 == pending_del_slot ) { pending_del_nr ++ ; pending_del_slot = path -> slots [ 0 ] ; } else { BUG ( ) ; } } else { break ; } should_throttle = 0 ; if ( found_extent && ( test_bit ( BTRFS_ROOT_REF_COWS , & root -> state ) || root == root -> fs_info -> tree_root ) ) { btrfs_set_path_blocking ( path ) ; bytes_deleted += extent_num_bytes ; ret = btrfs_free_extent ( trans , root , extent_start , extent_num_bytes , 0 , btrfs_header_owner ( leaf ) , ino , extent_offset , 0 ) ; BUG_ON ( ret ) ; if ( btrfs_should_throttle_delayed_refs ( trans , root ) ) btrfs_async_run_delayed_refs ( root , trans -> delayed_ref_updates * 2 , 0 ) ; if ( be_nice ) { if ( truncate_space_check ( trans , root , extent_num_bytes ) ) { should_end = 1 ; } if ( btrfs_should_throttle_delayed_refs ( trans , root ) ) { should_throttle = 1 ; } } } if ( found_type == BTRFS_INODE_ITEM_KEY ) break ; if ( path -> slots [ 0 ] == 0 || path -> slots [ 0 ] != pending_del_slot || should_throttle || should_end ) { if ( pending_del_nr ) { ret = btrfs_del_items ( trans , root , path , pending_del_slot , pending_del_nr ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto error ; } pending_del_nr = 0 ; } btrfs_release_path ( path ) ; if ( should_throttle ) { unsigned long updates = trans -> delayed_ref_updates ; if ( updates ) { trans -> delayed_ref_updates = 0 ; ret = btrfs_run_delayed_refs ( trans , root , updates * 2 ) ; if ( ret && ! err ) err = ret ; } } if ( should_end ) { err = - EAGAIN ; goto error ; } goto search_again ; } else { path -> slots [ 0 ] -- ; } } out : if ( pending_del_nr ) { ret = btrfs_del_items ( trans , root , path , pending_del_slot , pending_del_nr ) ; if ( ret ) btrfs_abort_transaction ( trans , root , ret ) ; } error : if ( root -> root_key . objectid != BTRFS_TREE_LOG_OBJECTID ) btrfs_ordered_update_i_size ( inode , last_size , NULL ) ; btrfs_free_path ( path ) ; if ( be_nice && bytes_deleted > 32 * 1024 * 1024 ) { unsigned long updates = trans -> delayed_ref_updates ; if ( updates ) { trans -> delayed_ref_updates = 0 ; ret = btrfs_run_delayed_refs ( trans , root , updates * 2 ) ; if ( ret && ! err ) err = ret ; } } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! del_item && btrfs_file_extent_encryption ( leaf , fi ) == 0 && btrfs_file_extent_other_encoding ( leaf , fi ) == 0 ) { if ( <S2SV_ModStart> , fi ) != BTRFS_COMPRESS_NONE && pending_del_nr ) { err = btrfs_del_items ( trans , root , path , pending_del_slot , pending_del_nr ) ; if ( err ) { btrfs_abort_transaction ( trans , root , err ) ; goto error ; } pending_del_nr = 0 ; } err = truncate_inline_extent ( inode , path , & found_key , item_end , new_size ) ; if ( err ) { btrfs_abort_transaction ( trans , root , err ) ; goto error ; } } else <S2SV_ModEnd> if ( test_bit <S2SV_ModStart> state ) ) { <S2SV_ModStart> 1 - new_size <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_denoiser_free ( VP8_DENOISER * denoiser ) { int i ; assert ( denoiser ) ; for ( i = 0 ; i < MAX_REF_FRAMES ; i ++ ) { vp8_yv12_de_alloc_frame_buffer ( & denoiser -> yv12_running_avg [ i ] ) ; } vp8_yv12_de_alloc_frame_buffer ( & denoiser -> yv12_mc_running_avg ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> yv12_mc_running_avg ) ; vp8_yv12_de_alloc_frame_buffer ( & denoiser -> yv12_last_source ) ; vpx_free ( denoiser -> denoise_state ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7418\n\n```\nCWE-59 static int get_default_root ( pool * p , int allow_symlinks , char * * root ) { config_rec * c = NULL ; char * dir = NULL ; int res ; c = find_config ( main_server -> conf , CONF_PARAM , \"DefaultRoot\" , FALSE ) ; while ( c ) { pr_signals_handle ( ) ; if ( c -> argc < 2 ) { dir = c -> argv [ 0 ] ; break ; } res = pr_expr_eval_group_and ( ( ( char * * ) c -> argv ) + 1 ) ; if ( res ) { dir = c -> argv [ 0 ] ; break ; } c = find_config_next ( c , c -> next , CONF_PARAM , \"DefaultRoot\" , FALSE ) ; } if ( dir ) { char * new_dir ; new_dir = path_subst_uservar ( p , & dir ) ; if ( new_dir != NULL ) { dir = new_dir ; } if ( strncmp ( dir , \"/\" , 2 ) == 0 ) { dir = NULL ; } else { char * realdir ; int xerrno = 0 ; if ( allow_symlinks == FALSE ) { char * path , target_path [ PR_TUNABLE_PATH_MAX + 1 ] ; <S2SV_StartBug> struct stat st ; <S2SV_EndBug> size_t pathlen ; path = dir ; if ( * path != '/' ) { if ( * path == '~' ) { if ( pr_fs_interpolate ( dir , target_path , sizeof ( target_path ) - 1 ) < 0 ) { return - 1 ; } path = target_path ; } } pathlen = strlen ( path ) ; if ( pathlen > 1 && path [ pathlen - 1 ] == '/' ) { path [ pathlen - 1 ] = '\\\\0' ; } <S2SV_StartBug> pr_fs_clear_cache ( ) ; <S2SV_EndBug> res = pr_fsio_lstat ( path , & st ) ; if ( res < 0 ) { <S2SV_StartBug> xerrno = errno ; <S2SV_EndBug> <S2SV_StartBug> pr_log_pri ( PR_LOG_WARNING , \"error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>check<S2SV_blank>%s:<S2SV_blank>%s\" , path , <S2SV_EndBug> strerror ( xerrno ) ) ; errno = xerrno ; return - 1 ; } if ( S_ISLNK ( st . st_mode ) ) { pr_log_pri ( PR_LOG_WARNING , \"error:<S2SV_blank>DefaultRoot<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symlink<S2SV_blank>(denied<S2SV_blank>by<S2SV_blank>AllowChrootSymlinks<S2SV_blank>\" \"config)\" , path ) ; errno = EPERM ; return - 1 ; } } PRIVS_USER realdir = dir_realpath ( p , dir ) ; xerrno = errno ; PRIVS_RELINQUISH if ( realdir ) { dir = realdir ; } else { char interp_dir [ PR_TUNABLE_PATH_MAX + 1 ] ; memset ( interp_dir , '\\\\0' , sizeof ( interp_dir ) ) ; ( void ) pr_fs_interpolate ( dir , interp_dir , sizeof ( interp_dir ) - 1 ) ; pr_log_pri ( PR_LOG_NOTICE , \"notice:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>use<S2SV_blank>DefaultRoot<S2SV_blank>\\'%s\\'<S2SV_blank>[resolved<S2SV_blank>to<S2SV_blank>\\'%s\\']:<S2SV_blank>%s\" , dir , interp_dir , strerror ( xerrno ) ) ; errno = xerrno ; } } } * root = dir ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ] ; <S2SV_ModEnd> size_t pathlen ; <S2SV_ModStart> '\\\\0' ; } res = is_symlink_path ( p , path , pathlen <S2SV_ModEnd> ) ; if <S2SV_ModStart> 0 ) { if ( errno == EPERM ) { <S2SV_ModEnd> pr_log_pri ( PR_LOG_WARNING <S2SV_ModStart> ( PR_LOG_WARNING , \"error:<S2SV_blank>DefaultRoot<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symlink<S2SV_blank>\" \"(denied<S2SV_blank>by<S2SV_blank>AllowChrootSymlinks<S2SV_blank>config)\" , path ) ; } <S2SV_ModEnd> errno = EPERM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3226\n\n```\nCWE-200 static int sco_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sco_pinfo * pi = sco_pi ( sk ) ; lock_sock ( sk ) ; if ( sk -> sk_state == BT_CONNECT2 && test_bit ( BT_SK_DEFER_SETUP , & bt_sk ( sk ) -> flags ) ) { hci_conn_accept ( pi -> conn -> hcon , 0 ) ; sk -> sk_state = BT_CONFIG ; <S2SV_StartBug> release_sock ( sk ) ; <S2SV_EndBug> return 0 ; } release_sock ( sk ) ; return bt_sock_recvmsg ( iocb , sock , msg , len , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = BT_CONFIG ; msg -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2847\n\n```\nCWE-399 long pipe_fcntl ( struct file * file , unsigned int cmd , unsigned long arg ) { struct pipe_inode_info * pipe ; long ret ; pipe = get_pipe_info ( file ) ; if ( ! pipe ) return - EBADF ; __pipe_lock ( pipe ) ; switch ( cmd ) { case F_SETPIPE_SZ : { unsigned int size , nr_pages ; size = round_pipe_size ( arg ) ; nr_pages = size >> PAGE_SHIFT ; ret = - EINVAL ; if ( ! nr_pages ) goto out ; if ( ! capable ( CAP_SYS_RESOURCE ) && size > pipe_max_size ) { ret = - EPERM ; goto out ; <S2SV_StartBug> } <S2SV_EndBug> ret = pipe_set_size ( pipe , nr_pages ) ; break ; } case F_GETPIPE_SZ : ret = pipe -> buffers * PAGE_SIZE ; break ; default : ret = - EINVAL ; break ; } out : __pipe_unlock ( pipe ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ; } else if ( ( too_many_pipe_buffers_hard ( pipe -> user ) || too_many_pipe_buffers_soft ( pipe -> user ) ) && ! capable ( CAP_SYS_RESOURCE ) && ! capable ( CAP_SYS_ADMIN ) ) { ret = - EPERM ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12896\n\n```\nCWE-125 void isakmp_rfc3948_print ( netdissect_options * ndo , const u_char * bp , u_int length , const u_char * bp2 ) { <S2SV_StartBug> if ( length == 1 && bp [ 0 ] == 0xff ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"isakmp-nat-keep-alive\" ) ) ; return ; } if ( length < 4 ) { goto trunc ; <S2SV_StartBug> } <S2SV_EndBug> if ( bp [ 0 ] == 0 && bp [ 1 ] == 0 && bp [ 2 ] == 0 && bp [ 3 ] == 0 ) { ND_PRINT ( ( ndo , \"NONESP-encap:<S2SV_blank>\" ) ) ; isakmp_print ( ndo , bp + 4 , length - 4 , bp2 ) ; return ; } { int nh , enh , padlen ; int advance ; ND_PRINT ( ( ndo , \"UDP-encap:<S2SV_blank>\" ) ) ; advance = esp_print ( ndo , bp , length , bp2 , & enh , & padlen ) ; if ( advance <= 0 ) return ; bp += advance ; length -= advance + padlen ; nh = enh & 0xff ; ip_print_inner ( ndo , bp , length , nh , bp2 ) ; return ; } trunc : ND_PRINT ( ( ndo , \"[|isakmp]\" ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bp2 ) { ND_TCHECK ( bp [ 0 ] ) ; <S2SV_ModStart> trunc ; } ND_TCHECK ( bp [ 3 ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_full_search_sadx8 ( MACROBLOCK * x , BLOCK * b , BLOCKD * d , int_mv * ref_mv , int sad_per_bit , int distance , vp8_variance_fn_ptr_t * fn_ptr , int * mvcost [ 2 ] , int_mv * center_mv ) { unsigned char * what = ( * ( b -> base_src ) + b -> src ) ; int what_stride = b -> src_stride ; int pre_stride = x -> e_mbd . pre . y_stride ; unsigned char * base_pre = x -> e_mbd . pre . y_buffer ; unsigned char * in_what ; int in_what_stride = pre_stride ; int mv_stride = pre_stride ; unsigned char * bestaddress ; int_mv * best_mv = & d -> bmi . mv ; int_mv this_mv ; unsigned int bestsad ; unsigned int thissad ; int r , c ; unsigned char * check_here ; int ref_row = ref_mv -> as_mv . row ; int ref_col = ref_mv -> as_mv . col ; int row_min = ref_row - distance ; int row_max = ref_row + distance ; int col_min = ref_col - distance ; int col_max = ref_col + distance ; <S2SV_StartBug> DECLARE_ALIGNED_ARRAY ( 16 , unsigned short , sad_array8 , 8 ) ; <S2SV_EndBug> unsigned int sad_array [ 3 ] ; int * mvsadcost [ 2 ] ; int_mv fcenter_mv ; mvsadcost [ 0 ] = x -> mvsadcost [ 0 ] ; mvsadcost [ 1 ] = x -> mvsadcost [ 1 ] ; fcenter_mv . as_mv . row = center_mv -> as_mv . row >> 3 ; fcenter_mv . as_mv . col = center_mv -> as_mv . col >> 3 ; in_what = base_pre + d -> offset ; bestaddress = in_what + ( ref_row * pre_stride ) + ref_col ; best_mv -> as_mv . row = ref_row ; best_mv -> as_mv . col = ref_col ; bestsad = fn_ptr -> sdf ( what , what_stride , <S2SV_StartBug> bestaddress , in_what_stride , UINT_MAX ) <S2SV_EndBug> + mvsad_err_cost ( best_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( col_min < x -> mv_col_min ) col_min = x -> mv_col_min ; if ( col_max > x -> mv_col_max ) col_max = x -> mv_col_max ; if ( row_min < x -> mv_row_min ) row_min = x -> mv_row_min ; if ( row_max > x -> mv_row_max ) row_max = x -> mv_row_max ; for ( r = row_min ; r < row_max ; r ++ ) { this_mv . as_mv . row = r ; check_here = r * mv_stride + in_what + col_min ; c = col_min ; while ( ( c + 7 ) < col_max ) { int i ; fn_ptr -> sdx8f ( what , what_stride , check_here , in_what_stride , sad_array8 ) ; for ( i = 0 ; i < 8 ; i ++ ) { thissad = sad_array8 [ i ] ; if ( thissad < bestsad ) { this_mv . as_mv . col = c ; thissad += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( thissad < bestsad ) { bestsad = thissad ; best_mv -> as_mv . row = r ; best_mv -> as_mv . col = c ; bestaddress = check_here ; } } check_here ++ ; c ++ ; } } while ( ( c + 2 ) < col_max ) { int i ; fn_ptr -> sdx3f ( what , what_stride , check_here , in_what_stride , sad_array ) ; for ( i = 0 ; i < 3 ; i ++ ) { thissad = sad_array [ i ] ; if ( thissad < bestsad ) { this_mv . as_mv . col = c ; thissad += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( thissad < bestsad ) { bestsad = thissad ; best_mv -> as_mv . row = r ; best_mv -> as_mv . col = c ; bestaddress = check_here ; } } check_here ++ ; c ++ ; } } while ( c < col_max ) { <S2SV_StartBug> thissad = fn_ptr -> sdf ( what , what_stride , check_here , in_what_stride , bestsad ) ; <S2SV_EndBug> if ( thissad < bestsad ) { this_mv . as_mv . col = c ; thissad += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( thissad < bestsad ) { bestsad = thissad ; best_mv -> as_mv . row = r ; best_mv -> as_mv . col = c ; bestaddress = check_here ; } } check_here ++ ; c ++ ; } } this_mv . as_mv . row = best_mv -> as_mv . row * 8 ; this_mv . as_mv . col = best_mv -> as_mv . col * 8 ; return fn_ptr -> vf ( what , what_stride , bestaddress , in_what_stride , & thissad ) + mv_err_cost ( & this_mv , center_mv , mvcost , x -> errorperbit ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + distance ; DECLARE_ALIGNED <S2SV_ModEnd> ( 16 , <S2SV_ModStart> 16 , unsigned int , sad_array8 [ 8 ] <S2SV_ModEnd> ) ; unsigned <S2SV_ModStart> bestaddress , in_what_stride <S2SV_ModEnd> ) + mvsad_err_cost <S2SV_ModStart> check_here , in_what_stride <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4178\n\n```\nCWE-000 void pin_remove ( struct fs_pin * pin ) { spin_lock ( & pin_lock ) ; <S2SV_StartBug> hlist_del ( & pin -> m_list ) ; <S2SV_EndBug> <S2SV_StartBug> hlist_del ( & pin -> s_list ) ; <S2SV_EndBug> spin_unlock ( & pin_lock ) ; spin_lock_irq ( & pin -> wait . lock ) ; pin -> done = 1 ; wake_up_locked ( & pin -> wait ) ; spin_unlock_irq ( & pin -> wait . lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pin_lock ) ; hlist_del_init <S2SV_ModEnd> ( & pin <S2SV_ModStart> m_list ) ; hlist_del_init <S2SV_ModEnd> ( & pin\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1344\n\n```\nCWE-264 <S2SV_StartBug> static bool do_write_pids ( pid_t tpid , const char * contrl , const char * cg , const char * file , const char * buf ) <S2SV_EndBug> { int sock [ 2 ] = { - 1 , - 1 } ; pid_t qpid , cpid = - 1 ; FILE * pids_file = NULL ; bool answer = false , fail = false ; pids_file = open_pids_file ( contrl , cg ) ; if ( ! pids_file ) return false ; if ( socketpair ( AF_UNIX , SOCK_DGRAM , 0 , sock ) < 0 ) { perror ( \"socketpair\" ) ; goto out ; } cpid = fork ( ) ; if ( cpid == - 1 ) goto out ; if ( ! cpid ) { fclose ( pids_file ) ; pid_from_ns_wrapper ( sock [ 1 ] , tpid ) ; } const char * ptr = buf ; while ( sscanf ( ptr , \"%d\" , & qpid ) == 1 ) { struct ucred cred ; char v ; if ( write ( sock [ 0 ] , & qpid , sizeof ( qpid ) ) != sizeof ( qpid ) ) { fprintf ( stderr , \"%s:<S2SV_blank>error<S2SV_blank>writing<S2SV_blank>pid<S2SV_blank>to<S2SV_blank>child:<S2SV_blank>%s\\\\n\" , __func__ , strerror ( errno ) ) ; goto out ; } if ( recv_creds ( sock [ 0 ] , & cred , & v ) ) { if ( v == '0' ) { <S2SV_StartBug> if ( fprintf ( pids_file , \"%d\" , ( int ) cred . pid ) < 0 ) <S2SV_EndBug> fail = true ; } } ptr = strchr ( ptr , '\\\\n' ) ; if ( ! ptr ) break ; ptr ++ ; } qpid = - 1 ; if ( write ( sock [ 0 ] , & qpid , sizeof ( qpid ) ) != sizeof ( qpid ) ) fprintf ( stderr , \"Warning:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ask<S2SV_blank>child<S2SV_blank>to<S2SV_blank>exit\\\\n\" ) ; if ( ! fail ) answer = true ; out : if ( cpid != - 1 ) wait_for_pid ( cpid ) ; if ( sock [ 0 ] != - 1 ) { close ( sock [ 0 ] ) ; close ( sock [ 1 ] ) ; } if ( pids_file ) { if ( fclose ( pids_file ) != 0 ) answer = false ; } return answer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pid_t tpid , uid_t tuid , <S2SV_ModStart> { if ( ! may_move_pid ( tpid , tuid , <S2SV_ModEnd> cred . pid <S2SV_ModStart> . pid ) ) { fail = true ; break ; } if ( fprintf ( pids_file , \"%d\" , ( int ) cred . pid )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9140\n\n```\nCWE-119 static void ppp_hdlc ( netdissect_options * ndo , const u_char * p , int length ) { <S2SV_StartBug> u_char * b , * s , * t , c ; <S2SV_EndBug> int i , proto ; const void * se ; if ( length <= 0 ) return ; <S2SV_StartBug> b = ( uint8_t * ) malloc ( length ) ; <S2SV_EndBug> if ( b == NULL ) return ; <S2SV_StartBug> for ( s = ( u_char * ) p , t = b , i = length ; i > 0 ; i -- ) { <S2SV_EndBug> c = * s ++ ; if ( c == 0x7d ) { <S2SV_StartBug> if ( i > 1 ) { <S2SV_EndBug> i -- ; <S2SV_StartBug> c = * s ++ ^ 0x20 ; <S2SV_EndBug> } else continue ; } * t ++ = c ; } se = ndo -> ndo_snapend ; ndo -> ndo_snapend = t ; length = t - b ; if ( length < 1 ) goto trunc ; proto = * b ; switch ( proto ) { case PPP_IP : ip_print ( ndo , b + 1 , length - 1 ) ; goto cleanup ; case PPP_IPV6 : ip6_print ( ndo , b + 1 , length - 1 ) ; goto cleanup ; default : break ; } if ( length < 2 ) goto trunc ; proto = EXTRACT_16BITS ( b ) ; switch ( proto ) { case ( PPP_ADDRESS << 8 | PPP_CONTROL ) : if ( length < 4 ) goto trunc ; proto = EXTRACT_16BITS ( b + 2 ) ; handle_ppp ( ndo , proto , b + 4 , length - 4 ) ; break ; default : handle_ppp ( ndo , proto , b + 2 , length - 2 ) ; break ; } cleanup : ndo -> ndo_snapend = se ; free ( b ) ; return ; trunc : ndo -> ndo_snapend = se ; free ( b ) ; ND_PRINT ( ( ndo , \"[|ppp]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> b , * <S2SV_ModEnd> t , c <S2SV_ModStart> t , c ; const u_char * s <S2SV_ModStart> b = ( u_char <S2SV_ModEnd> * ) malloc <S2SV_ModStart> ( s = <S2SV_ModEnd> p , t <S2SV_ModStart> i > 0 && ND_TTEST ( * s ) <S2SV_ModStart> if ( i <= 1 || ! ND_TTEST ( * s ) ) break ; <S2SV_ModEnd> i -- ; <S2SV_ModStart> ++ ^ 0x20 <S2SV_ModEnd> ; } *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 void pci_lintr_deassert ( struct pci_vdev * dev ) { <S2SV_StartBug> assert ( dev -> lintr . pin > 0 ) ; <S2SV_EndBug> pthread_mutex_lock ( & dev -> lintr . lock ) ; if ( dev -> lintr . state == ASSERTED ) { dev -> lintr . state = IDLE ; pci_irq_deassert ( dev ) ; } else if ( dev -> lintr . state == PENDING ) dev -> lintr . state = IDLE ; pthread_mutex_unlock ( & dev -> lintr . lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) { if <S2SV_ModEnd> ( dev -> <S2SV_ModStart> lintr . pin <= 0 ) { pr_warn ( \"%s:<S2SV_blank>Invalid<S2SV_blank>intr<S2SV_blank>pin<S2SV_blank>on<S2SV_blank>dev<S2SV_blank>[%s]\\\\n\" , __func__ , dev -> name ) ; return ; } <S2SV_ModEnd> pthread_mutex_lock ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5375\n\n```\nCWE-310 static noinline int create_pending_snapshot ( struct btrfs_trans_handle * trans , struct btrfs_fs_info * fs_info , struct btrfs_pending_snapshot * pending ) { struct btrfs_key key ; struct btrfs_root_item * new_root_item ; struct btrfs_root * tree_root = fs_info -> tree_root ; struct btrfs_root * root = pending -> root ; struct btrfs_root * parent_root ; struct btrfs_block_rsv * rsv ; struct inode * parent_inode ; struct btrfs_path * path ; struct btrfs_dir_item * dir_item ; struct dentry * parent ; struct dentry * dentry ; struct extent_buffer * tmp ; struct extent_buffer * old ; struct timespec cur_time = CURRENT_TIME ; int ret ; u64 to_reserve = 0 ; u64 index = 0 ; u64 objectid ; u64 root_flags ; uuid_le new_uuid ; path = btrfs_alloc_path ( ) ; if ( ! path ) { ret = pending -> error = - ENOMEM ; goto path_alloc_fail ; } new_root_item = kmalloc ( sizeof ( * new_root_item ) , GFP_NOFS ) ; if ( ! new_root_item ) { ret = pending -> error = - ENOMEM ; goto root_item_alloc_fail ; } ret = btrfs_find_free_objectid ( tree_root , & objectid ) ; if ( ret ) { pending -> error = ret ; goto no_free_objectid ; } btrfs_reloc_pre_snapshot ( trans , pending , & to_reserve ) ; if ( to_reserve > 0 ) { ret = btrfs_block_rsv_add ( root , & pending -> block_rsv , to_reserve , BTRFS_RESERVE_NO_FLUSH ) ; if ( ret ) { pending -> error = ret ; goto no_free_objectid ; } } ret = btrfs_qgroup_inherit ( trans , fs_info , root -> root_key . objectid , objectid , pending -> inherit ) ; if ( ret ) { pending -> error = ret ; goto no_free_objectid ; } key . objectid = objectid ; key . offset = ( u64 ) - 1 ; key . type = BTRFS_ROOT_ITEM_KEY ; rsv = trans -> block_rsv ; trans -> block_rsv = & pending -> block_rsv ; dentry = pending -> dentry ; parent = dget_parent ( dentry ) ; parent_inode = parent -> d_inode ; parent_root = BTRFS_I ( parent_inode ) -> root ; record_root_in_trans ( trans , parent_root ) ; ret = btrfs_set_inode_index ( parent_inode , & index ) ; BUG_ON ( ret ) ; dir_item = btrfs_lookup_dir_item ( NULL , parent_root , path , btrfs_ino ( parent_inode ) , dentry -> d_name . name , dentry -> d_name . len , 0 ) ; if ( dir_item != NULL && ! IS_ERR ( dir_item ) ) { pending -> error = - EEXIST ; goto fail ; } else if ( IS_ERR ( dir_item ) ) { ret = PTR_ERR ( dir_item ) ; btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } btrfs_release_path ( path ) ; ret = btrfs_run_delayed_items ( trans , root ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } record_root_in_trans ( trans , root ) ; btrfs_set_root_last_snapshot ( & root -> root_item , trans -> transid ) ; memcpy ( new_root_item , & root -> root_item , sizeof ( * new_root_item ) ) ; btrfs_check_and_init_root_item ( new_root_item ) ; root_flags = btrfs_root_flags ( new_root_item ) ; if ( pending -> readonly ) root_flags |= BTRFS_ROOT_SUBVOL_RDONLY ; else root_flags &= ~ BTRFS_ROOT_SUBVOL_RDONLY ; btrfs_set_root_flags ( new_root_item , root_flags ) ; btrfs_set_root_generation_v2 ( new_root_item , trans -> transid ) ; uuid_le_gen ( & new_uuid ) ; memcpy ( new_root_item -> uuid , new_uuid . b , BTRFS_UUID_SIZE ) ; memcpy ( new_root_item -> parent_uuid , root -> root_item . uuid , BTRFS_UUID_SIZE ) ; new_root_item -> otime . sec = cpu_to_le64 ( cur_time . tv_sec ) ; new_root_item -> otime . nsec = cpu_to_le32 ( cur_time . tv_nsec ) ; btrfs_set_root_otransid ( new_root_item , trans -> transid ) ; memset ( & new_root_item -> stime , 0 , sizeof ( new_root_item -> stime ) ) ; memset ( & new_root_item -> rtime , 0 , sizeof ( new_root_item -> rtime ) ) ; btrfs_set_root_stransid ( new_root_item , 0 ) ; btrfs_set_root_rtransid ( new_root_item , 0 ) ; old = btrfs_lock_root_node ( root ) ; ret = btrfs_cow_block ( trans , root , old , NULL , 0 , & old ) ; if ( ret ) { btrfs_tree_unlock ( old ) ; free_extent_buffer ( old ) ; btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } btrfs_set_lock_blocking ( old ) ; ret = btrfs_copy_root ( trans , root , old , & tmp , objectid ) ; btrfs_tree_unlock ( old ) ; free_extent_buffer ( old ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } root -> force_cow = 1 ; smp_wmb ( ) ; btrfs_set_root_node ( new_root_item , tmp ) ; key . offset = trans -> transid ; ret = btrfs_insert_root ( trans , tree_root , & key , new_root_item ) ; btrfs_tree_unlock ( tmp ) ; free_extent_buffer ( tmp ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } ret = btrfs_add_root_ref ( trans , tree_root , objectid , parent_root -> root_key . objectid , btrfs_ino ( parent_inode ) , index , dentry -> d_name . name , dentry -> d_name . len ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } key . offset = ( u64 ) - 1 ; pending -> snap = btrfs_read_fs_root_no_name ( root -> fs_info , & key ) ; if ( IS_ERR ( pending -> snap ) ) { ret = PTR_ERR ( pending -> snap ) ; btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } ret = btrfs_reloc_post_snapshot ( trans , pending ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } ret = btrfs_run_delayed_refs ( trans , root , ( unsigned long ) - 1 ) ; if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } ret = btrfs_insert_dir_item ( trans , parent_root , dentry -> d_name . name , dentry -> d_name . len , parent_inode , & key , BTRFS_FT_DIR , index ) ; <S2SV_StartBug> BUG_ON ( ret == - EEXIST ) ; <S2SV_EndBug> if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; goto fail ; } btrfs_i_size_write ( parent_inode , parent_inode -> i_size + dentry -> d_name . len * 2 ) ; parent_inode -> i_mtime = parent_inode -> i_ctime = CURRENT_TIME ; ret = btrfs_update_inode_fallback ( trans , parent_root , parent_inode ) ; if ( ret ) btrfs_abort_transaction ( trans , root , ret ) ; fail : dput ( parent ) ; trans -> block_rsv = rsv ; no_free_objectid : kfree ( new_root_item ) ; root_item_alloc_fail : btrfs_free_path ( path ) ; path_alloc_fail : btrfs_block_rsv_release ( root , & pending -> block_rsv , ( u64 ) - 1 ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == - EEXIST || ret == - EOVERFLOW\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-400 static void Rp_test ( js_State * J ) { js_Regexp * re ; const char * text ; <S2SV_StartBug> int opts ; <S2SV_EndBug> Resub m ; re = js_toregexp ( J , 0 ) ; text = js_tostring ( J , 1 ) ; opts = 0 ; if ( re -> flags & JS_REGEXP_G ) { if ( re -> last > strlen ( text ) ) { re -> last = 0 ; js_pushboolean ( J , 0 ) ; return ; } if ( re -> last > 0 ) { text += re -> last ; opts |= REG_NOTBOL ; } } <S2SV_StartBug> if ( ! js_regexec ( re -> prog , text , & m , opts ) ) { <S2SV_EndBug> if ( re -> flags & JS_REGEXP_G ) re -> last = re -> last + ( m . sub [ 0 ] . ep - text ) ; js_pushboolean ( J , 1 ) ; return ; } if ( re -> flags & JS_REGEXP_G ) re -> last = 0 ; js_pushboolean ( J , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> text ; int result ; int <S2SV_ModStart> ; } } result = <S2SV_ModEnd> js_regexec ( re <S2SV_ModStart> , opts ) ; if ( result < 0 ) js_error ( J , \"regexec<S2SV_blank>failed\" ) ; if ( result == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 static void findoprnd ( ITEM * ptr , int32 * pos ) <S2SV_StartBug> { <S2SV_EndBug> if ( ptr [ * pos ] . type == VAL || ptr [ * pos ] . type == VALTRUE ) { ptr [ * pos ] . left = 0 ; ( * pos ) ++ ; } else if ( ptr [ * pos ] . val == ( int32 ) '!' ) { ptr [ * pos ] . left = 1 ; ( * pos ) ++ ; findoprnd ( ptr , pos ) ; } else { ITEM * curitem = & ptr [ * pos ] ; int32 tmp = * pos ; ( * pos ) ++ ; findoprnd ( ptr , pos ) ; curitem -> left = * pos - tmp ; findoprnd ( ptr , pos ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pos ) { check_stack_depth ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> int ntlm_read_message_fields ( wStream * s , NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( Stream_GetRemainingLength ( s ) < 8 ) return - 1 ; Stream_Read_UINT16 ( s , fields -> Len ) ; Stream_Read_UINT16 ( s , fields -> MaxLen ) ; Stream_Read_UINT32 ( s , fields -> BufferOffset ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t decoder_init ( vpx_codec_ctx_t * ctx , vpx_codec_priv_enc_mr_cfg_t * data ) { <S2SV_StartBug> if ( ! ctx -> priv ) { <S2SV_EndBug> <S2SV_StartBug> vpx_codec_alg_priv_t * alg_priv = vpx_memalign ( 32 , sizeof ( * alg_priv ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( alg_priv == NULL ) <S2SV_EndBug> <S2SV_StartBug> return VPX_CODEC_MEM_ERROR ; <S2SV_EndBug> vp9_zero ( * alg_priv ) ; <S2SV_StartBug> ctx -> priv = ( vpx_codec_priv_t * ) alg_priv ; <S2SV_EndBug> ctx -> priv -> sz = sizeof ( * ctx -> priv ) ; ctx -> priv -> iface = ctx -> iface ; ctx -> priv -> alg_priv = alg_priv ; ctx -> priv -> alg_priv -> si . sz = sizeof ( ctx -> priv -> alg_priv -> si ) ; ctx -> priv -> init_flags = ctx -> init_flags ; <S2SV_StartBug> if ( ctx -> config . dec ) { <S2SV_EndBug> <S2SV_StartBug> ctx -> priv -> alg_priv -> cfg = * ctx -> config . dec ; <S2SV_EndBug> <S2SV_StartBug> ctx -> config . dec = & ctx -> priv -> alg_priv -> cfg ; <S2SV_EndBug> } } return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { ( void ) data ; <S2SV_ModStart> { vpx_codec_alg_priv_t * const priv = vpx_calloc ( 1 <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> sizeof ( * priv <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ; if ( priv <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ) return VPX_CODEC_MEM_ERROR <S2SV_ModEnd> ; ctx -> <S2SV_ModStart> vpx_codec_priv_t * ) priv <S2SV_ModEnd> ; ctx -> <S2SV_ModStart> -> init_flags ; priv -> si . sz = sizeof ( priv -> si ) ; priv -> flushed = 0 ; priv -> frame_parallel_decode = ( ctx -> config . dec && ( ctx -> config . dec -> threads > 1 ) && ( ctx -> init_flags & VPX_CODEC_USE_FRAME_THREADING ) ) ? 1 : 0 ; <S2SV_ModStart> dec ) { priv <S2SV_ModEnd> -> cfg = <S2SV_ModStart> dec = & priv <S2SV_ModEnd> -> cfg ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr3_leaf_getvalue ( struct xfs_buf * bp , struct xfs_da_args * args ) { struct xfs_attr_leafblock * leaf ; struct xfs_attr3_icleaf_hdr ichdr ; struct xfs_attr_leaf_entry * entry ; struct xfs_attr_leaf_name_local * name_loc ; struct xfs_attr_leaf_name_remote * name_rmt ; int valuelen ; leaf = bp -> b_addr ; xfs_attr3_leaf_hdr_from_disk ( & ichdr , leaf ) ; ASSERT ( ichdr . count < XFS_LBSIZE ( args -> dp -> i_mount ) / 8 ) ; ASSERT ( args -> index < ichdr . count ) ; entry = & xfs_attr3_leaf_entryp ( leaf ) [ args -> index ] ; if ( entry -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf , args -> index ) ; ASSERT ( name_loc -> namelen == args -> namelen ) ; ASSERT ( memcmp ( args -> name , name_loc -> nameval , args -> namelen ) == 0 ) ; valuelen = be16_to_cpu ( name_loc -> valuelen ) ; if ( args -> flags & ATTR_KERNOVAL ) { args -> valuelen = valuelen ; return 0 ; } if ( args -> valuelen < valuelen ) { args -> valuelen = valuelen ; return XFS_ERROR ( ERANGE ) ; } args -> valuelen = valuelen ; memcpy ( args -> value , & name_loc -> nameval [ args -> namelen ] , valuelen ) ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf , args -> index ) ; ASSERT ( name_rmt -> namelen == args -> namelen ) ; ASSERT ( memcmp ( args -> name , name_rmt -> name , args -> namelen ) == 0 ) ; <S2SV_StartBug> valuelen = be32_to_cpu ( name_rmt -> valuelen ) ; <S2SV_EndBug> args -> rmtblkno = be32_to_cpu ( name_rmt -> valueblk ) ; args -> rmtblkcnt = xfs_attr3_rmt_blocks ( args -> dp -> i_mount , <S2SV_StartBug> valuelen ) ; <S2SV_EndBug> if ( args -> flags & ATTR_KERNOVAL ) { <S2SV_StartBug> args -> valuelen = valuelen ; <S2SV_EndBug> return 0 ; } <S2SV_StartBug> if ( args -> valuelen < valuelen ) { <S2SV_EndBug> args -> valuelen = valuelen ; return XFS_ERROR ( ERANGE ) ; } <S2SV_StartBug> args -> valuelen = valuelen ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; args -> rmtvaluelen <S2SV_ModEnd> = be32_to_cpu ( <S2SV_ModStart> -> i_mount , args -> rmtvaluelen <S2SV_ModEnd> ) ; if <S2SV_ModStart> -> valuelen = args -> rmtvaluelen <S2SV_ModEnd> ; return 0 <S2SV_ModStart> -> valuelen < args -> rmtvaluelen ) { args -> valuelen = args -> rmtvaluelen <S2SV_ModEnd> ; return XFS_ERROR <S2SV_ModStart> -> valuelen = args -> rmtvaluelen <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4501\n\n```\nCWE-119 static bool parse_reconnect ( struct pool * pool , json_t * val ) { <S2SV_StartBug> char * sockaddr_url , * stratum_port , * tmp ; <S2SV_EndBug> char * url , * port , address [ 256 ] ; <S2SV_StartBug> if ( opt_disable_client_reconnect ) { <S2SV_EndBug> applog ( LOG_WARNING , \"Stratum<S2SV_blank>client.reconnect<S2SV_blank>forbidden,<S2SV_blank>aborting.\" ) ; return false ; } memset ( address , 0 , 255 ) ; <S2SV_StartBug> url = ( char * ) json_string_value ( json_array_get ( val , 0 ) ) ; <S2SV_EndBug> if ( ! url ) url = pool -> sockaddr_url ; port = ( char * ) json_string_value ( json_array_get ( val , 1 ) ) ; if ( ! port ) port = pool -> stratum_port ; <S2SV_StartBug> sprintf ( address , \"%s:%s\" , url , port ) ; <S2SV_EndBug> if ( ! extract_sockaddr ( address , & sockaddr_url , & stratum_port ) ) return false ; applog ( LOG_NOTICE , \"Reconnect<S2SV_blank>requested<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s\" , get_pool_name ( pool ) , address ) ; clear_pool_work ( pool ) ; mutex_lock ( & pool -> stratum_lock ) ; __suspend_stratum ( pool ) ; tmp = pool -> sockaddr_url ; pool -> sockaddr_url = sockaddr_url ; pool -> stratum_url = pool -> sockaddr_url ; free ( tmp ) ; tmp = pool -> stratum_port ; pool -> stratum_port = stratum_port ; free ( tmp ) ; mutex_unlock ( & pool -> stratum_lock ) ; if ( ! restart_stratum ( pool ) ) { pool_failed ( pool ) ; return false ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { if ( opt_disable_client_reconnect ) { applog ( LOG_WARNING , \"Stratum<S2SV_blank>client.reconnect<S2SV_blank>received<S2SV_blank>but<S2SV_blank>is<S2SV_blank>disabled,<S2SV_blank>not<S2SV_blank>reconnecting.\" ) ; return false ; } <S2SV_ModEnd> char * url <S2SV_ModStart> 256 ] ; char * sockaddr_url , * stratum_port , * tmp ; url = ( char * ) json_string_value ( json_array_get ( val , 0 ) ) ; if ( ! url ) url = pool -> sockaddr_url ; port <S2SV_ModEnd> = ( char <S2SV_ModStart> ( val , <S2SV_ModEnd> 1 ) ) <S2SV_ModStart> -> stratum_port ; snprintf ( address , sizeof ( address ) <S2SV_ModEnd> , \"%s:%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9763\n\n```\nCWE-119 static int cmd_mount ( void * data , const char * _input ) { ut64 off = 0 ; char * input , * oinput , * ptr , * ptr2 ; RList * list ; RListIter * iter ; RFSFile * file ; RFSRoot * root ; RFSPlugin * plug ; RFSPartition * part ; RCore * core = ( RCore * ) data ; if ( ! strncmp ( \"kdir\" , _input , 4 ) ) { return cmd_mkdir ( data , _input ) ; } if ( ! strncmp ( \"v\" , _input , 1 ) ) { return cmd_mv ( data , _input ) ; } input = oinput = strdup ( _input ) ; switch ( * input ) { case '<S2SV_blank>' : input ++ ; if ( input [ 0 ] == '<S2SV_blank>' ) <S2SV_StartBug> input ++ ; <S2SV_EndBug> ptr = strchr ( input , '<S2SV_blank>' ) ; if ( ptr ) { * ptr = 0 ; ptr ++ ; ptr2 = strchr ( ptr , '<S2SV_blank>' ) ; if ( ptr2 ) { * ptr2 = 0 ; off = r_num_math ( core -> num , ptr2 + 1 ) ; } <S2SV_StartBug> if ( ! r_fs_mount ( core -> fs , ptr , input , off ) ) <S2SV_EndBug> eprintf ( \"Cannot<S2SV_blank>mount<S2SV_blank>%s\\\\n\" , input ) ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> if ( ! ( ptr = r_fs_name ( core -> fs , core -> offset ) ) ) <S2SV_EndBug> eprintf ( \"Unknown<S2SV_blank>filesystem<S2SV_blank>type\\\\n\" ) ; <S2SV_StartBug> else if ( ! r_fs_mount ( core -> fs , ptr , input , core -> offset ) ) <S2SV_EndBug> <S2SV_StartBug> eprintf ( \"Cannot<S2SV_blank>mount<S2SV_blank>%s\\\\n\" , input ) ; <S2SV_EndBug> free ( ptr ) ; } break ; case '-' : r_fs_umount ( core -> fs , input + 1 ) ; break ; case '*' : eprintf ( \"List<S2SV_blank>commands<S2SV_blank>in<S2SV_blank>radare<S2SV_blank>format\\\\n\" ) ; r_list_foreach ( core -> fs -> roots , iter , root ) { r_cons_printf ( \"m<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>0x%\" PFMT64x \"\\\\n\" , root -> path , root -> p -> name , root -> delta ) ; } break ; case '\\\\0' : r_list_foreach ( core -> fs -> roots , iter , root ) { r_cons_printf ( \"%s\\\\t0x%\" PFMT64x \"\\\\t%s\\\\n\" , root -> p -> name , root -> delta , root -> path ) ; } break ; case 'l' : r_list_foreach ( core -> fs -> plugins , iter , plug ) { r_cons_printf ( \"%10s<S2SV_blank><S2SV_blank>%s\\\\n\" , plug -> name , plug -> desc ) ; } break ; case 'd' : input ++ ; if ( input [ 0 ] == '<S2SV_blank>' ) input ++ ; list = r_fs_dir ( core -> fs , input ) ; if ( list ) { r_list_foreach ( list , iter , file ) { r_cons_printf ( \"%c<S2SV_blank>%s\\\\n\" , file -> type , file -> name ) ; } r_list_free ( list ) ; } else eprintf ( \"Cannot<S2SV_blank>open<S2SV_blank>\\'%s\\'<S2SV_blank>directory\\\\n\" , input ) ; break ; case 'p' : input ++ ; if ( * input == '<S2SV_blank>' ) input ++ ; ptr = strchr ( input , '<S2SV_blank>' ) ; if ( ptr ) { * ptr = 0 ; off = r_num_math ( core -> num , ptr + 1 ) ; } list = r_fs_partitions ( core -> fs , input , off ) ; if ( list ) { r_list_foreach ( list , iter , part ) { r_cons_printf ( \"%d<S2SV_blank>%02x<S2SV_blank>0x%010\" PFMT64x \"<S2SV_blank>0x%010\" PFMT64x \"\\\\n\" , part -> number , part -> type , part -> start , part -> start + part -> length ) ; } r_list_free ( list ) ; } else eprintf ( \"Cannot<S2SV_blank>read<S2SV_blank>partition\\\\n\" ) ; break ; case 'o' : input ++ ; if ( input [ 0 ] == '<S2SV_blank>' ) input ++ ; file = r_fs_open ( core -> fs , input ) ; if ( file ) { r_fs_read ( core -> fs , file , 0 , file -> size ) ; r_cons_printf ( \"f<S2SV_blank>file<S2SV_blank>%d<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , file -> size , file -> off ) ; r_fs_close ( core -> fs , file ) ; } else eprintf ( \"Cannot<S2SV_blank>open<S2SV_blank>file\\\\n\" ) ; break ; case 'g' : input ++ ; if ( * input == '<S2SV_blank>' ) input ++ ; ptr = strchr ( input , '<S2SV_blank>' ) ; if ( ptr ) * ptr ++ = 0 ; else ptr = \"./\" ; file = r_fs_open ( core -> fs , input ) ; if ( file ) { r_fs_read ( core -> fs , file , 0 , file -> size ) ; write ( 1 , file -> data , file -> size ) ; r_fs_close ( core -> fs , file ) ; write ( 1 , \"\\\\n\" , 1 ) ; } else if ( ! r_fs_dir_dump ( core -> fs , input , ptr ) ) eprintf ( \"Cannot<S2SV_blank>open<S2SV_blank>file\\\\n\" ) ; break ; case 'f' : input ++ ; switch ( * input ) { case '?' : r_cons_printf ( \"Usage:<S2SV_blank>mf[no]<S2SV_blank>[...]\\\\n\" \"<S2SV_blank>mfn<S2SV_blank>/foo<S2SV_blank>*.c<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>;<S2SV_blank>search<S2SV_blank>files<S2SV_blank>by<S2SV_blank>name<S2SV_blank>in<S2SV_blank>/foo<S2SV_blank>path\\\\n\" \"<S2SV_blank>mfo<S2SV_blank>/foo<S2SV_blank>0x5e91<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>;<S2SV_blank>search<S2SV_blank>files<S2SV_blank>by<S2SV_blank>offset<S2SV_blank>in<S2SV_blank>/foo<S2SV_blank>path\\\\n\" ) ; break ; case 'n' : input ++ ; if ( * input == '<S2SV_blank>' ) input ++ ; ptr = strchr ( input , '<S2SV_blank>' ) ; if ( ptr ) { * ptr ++ = 0 ; list = r_fs_find_name ( core -> fs , input , ptr ) ; r_list_foreach ( list , iter , ptr ) { r_str_chop_path ( ptr ) ; printf ( \"%s\\\\n\" , ptr ) ; } } else eprintf ( \"Unknown<S2SV_blank>store<S2SV_blank>path\\\\n\" ) ; break ; case 'o' : input ++ ; if ( * input == '<S2SV_blank>' ) input ++ ; ptr = strchr ( input , '<S2SV_blank>' ) ; if ( ptr ) { * ptr ++ = 0 ; ut64 off = r_num_math ( core -> num , ptr ) ; list = r_fs_find_off ( core -> fs , input , off ) ; r_list_foreach ( list , iter , ptr ) { r_str_chop_path ( ptr ) ; printf ( \"%s\\\\n\" , ptr ) ; } } else eprintf ( \"Unknown<S2SV_blank>store<S2SV_blank>path\\\\n\" ) ; break ; } break ; case 's' : if ( core -> http_up ) { free ( oinput ) ; return false ; } input ++ ; if ( input [ 0 ] == '<S2SV_blank>' ) input ++ ; r_fs_prompt ( core -> fs , input ) ; break ; case 'y' : eprintf ( \"TODO\\\\n\" ) ; break ; case '?' : { const char * help_msg [ ] = { \"Usage:\" , \"m[-?*dgy]<S2SV_blank>[...]<S2SV_blank>\" , \"Mountpoints<S2SV_blank>management\" , \"m\" , \"\" , \"List<S2SV_blank>all<S2SV_blank>mountpoints<S2SV_blank>in<S2SV_blank>human<S2SV_blank>readable<S2SV_blank>format\" , \"m*\" , \"\" , \"Same<S2SV_blank>as<S2SV_blank>above,<S2SV_blank>but<S2SV_blank>in<S2SV_blank>r2<S2SV_blank>commands\" , \"ml\" , \"\" , \"List<S2SV_blank>filesystem<S2SV_blank>plugins\" , \"m\" , \"<S2SV_blank>/mnt\" , \"Mount<S2SV_blank>fs<S2SV_blank>at<S2SV_blank>/mnt<S2SV_blank>with<S2SV_blank>autodetect<S2SV_blank>fs<S2SV_blank>and<S2SV_blank>current<S2SV_blank>offset\" , \"m\" , \"<S2SV_blank>/mnt<S2SV_blank>ext2<S2SV_blank>0\" , \"Mount<S2SV_blank>ext2<S2SV_blank>fs<S2SV_blank>at<S2SV_blank>/mnt<S2SV_blank>with<S2SV_blank>delta<S2SV_blank>0<S2SV_blank>on<S2SV_blank>IO\" , \"m-/\" , \"\" , \"Umount<S2SV_blank>given<S2SV_blank>path<S2SV_blank>(/)\" , \"my\" , \"\" , \"Yank<S2SV_blank>contents<S2SV_blank>of<S2SV_blank>file<S2SV_blank>into<S2SV_blank>clipboard\" , \"mo\" , \"<S2SV_blank>/foo\" , \"Get<S2SV_blank>offset<S2SV_blank>and<S2SV_blank>size<S2SV_blank>of<S2SV_blank>given<S2SV_blank>file\" , \"mg\" , \"<S2SV_blank>/foo\" , \"Get<S2SV_blank>contents<S2SV_blank>of<S2SV_blank>file/dir<S2SV_blank>dumped<S2SV_blank>to<S2SV_blank>disk<S2SV_blank>(XXX?)\" , \"mf\" , \"[?]<S2SV_blank>[o|n]\" , \"Search<S2SV_blank>files<S2SV_blank>for<S2SV_blank>given<S2SV_blank>filename<S2SV_blank>or<S2SV_blank>for<S2SV_blank>offset\" , \"md\" , \"<S2SV_blank>/\" , \"List<S2SV_blank>directory<S2SV_blank>contents<S2SV_blank>for<S2SV_blank>path\" , \"mp\" , \"\" , \"List<S2SV_blank>all<S2SV_blank>supported<S2SV_blank>partition<S2SV_blank>types\" , \"mp\" , \"<S2SV_blank>msdos<S2SV_blank>0\" , \"Show<S2SV_blank>partitions<S2SV_blank>in<S2SV_blank>msdos<S2SV_blank>format<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>0\" , \"ms\" , \"<S2SV_blank>/mnt\" , \"Open<S2SV_blank>filesystem<S2SV_blank>prompt<S2SV_blank>at<S2SV_blank>/mnt\" , NULL } ; r_core_cmd_help ( core , help_msg ) ; } break ; } free ( oinput ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == '<S2SV_blank>' ) { input ++ ; } <S2SV_ModEnd> ptr = strchr <S2SV_ModStart> off ) ) { <S2SV_ModStart> ) ; } } <S2SV_ModStart> ) ) ) { <S2SV_ModStart> \"Unknown<S2SV_blank>filesystem<S2SV_blank>type\\\\n\" ) ; } <S2SV_ModStart> offset ) ) { <S2SV_ModStart> input ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3138\n\n```\nCWE-20 static int wb_prep ( netdissect_options * ndo , const struct pkt_prep * prep , u_int len ) { int n ; const struct pgstate * ps ; const u_char * ep = ndo -> ndo_snapend ; ND_PRINT ( ( ndo , \"<S2SV_blank>wb-prep:\" ) ) ; if ( len < sizeof ( * prep ) ) { return ( - 1 ) ; } n = EXTRACT_32BITS ( & prep -> pp_n ) ; ps = ( const struct pgstate * ) ( prep + 1 ) ; <S2SV_StartBug> while ( -- n >= 0 && ! ND_TTEST ( * ps ) ) { <S2SV_EndBug> const struct id_off * io , * ie ; char c = '<' ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u/%s:%u\" , EXTRACT_32BITS ( & ps -> slot ) , ipaddr_string ( ndo , & ps -> page . p_sid ) , EXTRACT_32BITS ( & ps -> page . p_uid ) ) ) ; io = ( struct id_off * ) ( ps + 1 ) ; <S2SV_StartBug> for ( ie = io + ps -> nid ; io < ie && ! ND_TTEST ( * io ) ; ++ io ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%c%s:%u\" , c , ipaddr_string ( ndo , & io -> id ) , EXTRACT_32BITS ( & io -> off ) ) ) ; c = ',' ; } ND_PRINT ( ( ndo , \">\" ) ) ; ps = ( struct pgstate * ) io ; } return ( ( u_char * ) ps <= ep ? 0 : - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> >= 0 && <S2SV_ModEnd> ND_TTEST ( * <S2SV_ModStart> < ie && <S2SV_ModEnd> ND_TTEST ( *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19767\n\n```\nCWE-416 static void ext4_clamp_want_extra_isize ( struct super_block * sb ) { struct ext4_sb_info * sbi = EXT4_SB ( sb ) ; struct ext4_super_block * es = sbi -> s_es ; <S2SV_StartBug> if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE && <S2SV_EndBug> sbi -> s_want_extra_isize == 0 ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; if ( ext4_has_feature_extra_isize ( sb ) ) { if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_want_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_want_extra_isize ) ; if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_min_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_min_extra_isize ) ; } } if ( EXT4_GOOD_OLD_INODE_SIZE + sbi -> s_want_extra_isize > <S2SV_StartBug> sbi -> s_inode_size ) { <S2SV_EndBug> sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; ext4_msg ( sb , KERN_INFO , \"required<S2SV_blank>extra<S2SV_blank>inode<S2SV_blank>space<S2SV_blank>not<S2SV_blank>available\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> s_es ; unsigned def_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; <S2SV_ModStart> sbi -> s_inode_size == EXT4_GOOD_OLD_INODE_SIZE ) { sbi -> s_want_extra_isize = 0 ; return ; } if ( sbi -> s_want_extra_isize < 4 ) { sbi -> s_want_extra_isize = def_extra_isize ; if ( ext4_has_feature_extra_isize ( sb ) ) { if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_want_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_want_extra_isize ) ; if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_min_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_min_extra_isize ) ; } } if ( ( sbi -> s_want_extra_isize > sbi -> s_inode_size ) || <S2SV_ModEnd> ( EXT4_GOOD_OLD_INODE_SIZE + <S2SV_ModStart> -> s_inode_size ) ) { sbi -> s_want_extra_isize = def_extra_isize <S2SV_ModEnd> ; ext4_msg (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2313\n\n```\nCWE-264 static int rio_ioctl ( struct net_device * dev , struct ifreq * rq , int cmd ) { int phy_addr ; struct netdev_private * np = netdev_priv ( dev ) ; <S2SV_StartBug> struct mii_data * miidata = ( struct mii_data * ) & rq -> ifr_ifru ; <S2SV_EndBug> struct netdev_desc * desc ; int i ; phy_addr = np -> phy_addr ; switch ( cmd ) { <S2SV_StartBug> case SIOCDEVPRIVATE : <S2SV_EndBug> break ; <S2SV_StartBug> case SIOCDEVPRIVATE + 1 : <S2SV_EndBug> <S2SV_StartBug> miidata -> out_value = mii_read ( dev , phy_addr , miidata -> reg_num ) ; <S2SV_EndBug> break ; <S2SV_StartBug> case SIOCDEVPRIVATE + 2 : <S2SV_EndBug> <S2SV_StartBug> mii_write ( dev , phy_addr , miidata -> reg_num , miidata -> in_value ) ; <S2SV_EndBug> break ; case SIOCDEVPRIVATE + 3 : break ; case SIOCDEVPRIVATE + 4 : break ; case SIOCDEVPRIVATE + 5 : netif_stop_queue ( dev ) ; break ; case SIOCDEVPRIVATE + 6 : netif_wake_queue ( dev ) ; break ; case SIOCDEVPRIVATE + 7 : printk ( \"tx_full=%x<S2SV_blank>cur_tx=%lx<S2SV_blank>old_tx=%lx<S2SV_blank>cur_rx=%lx<S2SV_blank>old_rx=%lx\\\\n\" , netif_queue_stopped ( dev ) , np -> cur_tx , np -> old_tx , np -> cur_rx , np -> old_rx ) ; break ; case SIOCDEVPRIVATE + 8 : printk ( \"TX<S2SV_blank>ring:\\\\n\" ) ; for ( i = 0 ; i < TX_RING_SIZE ; i ++ ) { desc = & np -> tx_ring [ i ] ; printk ( \"%02x:cur:%08x<S2SV_blank>next:%08x<S2SV_blank>status:%08x<S2SV_blank>frag1:%08x<S2SV_blank>frag0:%08x\" , i , ( u32 ) ( np -> tx_ring_dma + i * sizeof ( * desc ) ) , ( u32 ) le64_to_cpu ( desc -> next_desc ) , ( u32 ) le64_to_cpu ( desc -> status ) , ( u32 ) ( le64_to_cpu ( desc -> fraginfo ) >> 32 ) , ( u32 ) le64_to_cpu ( desc -> fraginfo ) ) ; printk ( \"\\\\n\" ) ; } printk ( \"\\\\n\" ) ; break ; default : return - EOPNOTSUPP ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct mii_ioctl_data <S2SV_ModEnd> * miidata = <S2SV_ModStart> * miidata = if_mii ( rq ) <S2SV_ModEnd> ; phy_addr = <S2SV_ModStart> ) { case SIOCGMIIPHY : miidata -> phy_id = phy_addr ; <S2SV_ModEnd> break ; case <S2SV_ModStart> break ; case SIOCGMIIREG <S2SV_ModEnd> : miidata -> <S2SV_ModStart> : miidata -> val_out <S2SV_ModEnd> = mii_read ( <S2SV_ModStart> break ; case SIOCSMIIREG : if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; <S2SV_ModEnd> mii_write ( dev <S2SV_ModStart> , miidata -> val_in <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18218\n\n```\nCWE-416 <S2SV_StartBug> int hns_nic_net_xmit_hw ( struct net_device * ndev , <S2SV_EndBug> struct sk_buff * skb , struct hns_nic_ring_data * ring_data ) { struct hns_nic_priv * priv = netdev_priv ( ndev ) ; struct hnae_ring * ring = ring_data -> ring ; struct device * dev = ring_to_dev ( ring ) ; struct netdev_queue * dev_queue ; struct skb_frag_struct * frag ; int buf_num ; int seg_num ; dma_addr_t dma ; int size , next_to_use ; int i ; switch ( priv -> ops . maybe_stop_tx ( & skb , & buf_num , ring ) ) { case - EBUSY : ring -> stats . tx_busy ++ ; goto out_net_tx_busy ; case - ENOMEM : ring -> stats . sw_err_cnt ++ ; netdev_err ( ndev , \"no<S2SV_blank>memory<S2SV_blank>to<S2SV_blank>xmit!\\\\n\" ) ; goto out_err_tx_ok ; default : break ; } seg_num = skb_shinfo ( skb ) -> nr_frags + 1 ; next_to_use = ring -> next_to_use ; size = skb_headlen ( skb ) ; dma = dma_map_single ( dev , skb -> data , size , DMA_TO_DEVICE ) ; if ( dma_mapping_error ( dev , dma ) ) { netdev_err ( ndev , \"TX<S2SV_blank>head<S2SV_blank>DMA<S2SV_blank>map<S2SV_blank>failed\\\\n\" ) ; ring -> stats . sw_err_cnt ++ ; goto out_err_tx_ok ; } priv -> ops . fill_desc ( ring , skb , size , dma , seg_num == 1 ? 1 : 0 , buf_num , DESC_TYPE_SKB , ndev -> mtu ) ; for ( i = 1 ; i < seg_num ; i ++ ) { frag = & skb_shinfo ( skb ) -> frags [ i - 1 ] ; size = skb_frag_size ( frag ) ; dma = skb_frag_dma_map ( dev , frag , 0 , size , DMA_TO_DEVICE ) ; if ( dma_mapping_error ( dev , dma ) ) { netdev_err ( ndev , \"TX<S2SV_blank>frag(%d)<S2SV_blank>DMA<S2SV_blank>map<S2SV_blank>failed\\\\n\" , i ) ; ring -> stats . sw_err_cnt ++ ; goto out_map_frag_fail ; } priv -> ops . fill_desc ( ring , skb_frag_page ( frag ) , size , dma , seg_num - 1 == i ? 1 : 0 , buf_num , DESC_TYPE_PAGE , ndev -> mtu ) ; } dev_queue = netdev_get_tx_queue ( ndev , skb -> queue_mapping ) ; netdev_tx_sent_queue ( dev_queue , skb -> len ) ; <S2SV_StartBug> wmb ( ) ; <S2SV_EndBug> assert ( skb -> queue_mapping < priv -> ae_handle -> q_num ) ; hnae_queue_xmit ( priv -> ae_handle -> qs [ skb -> queue_mapping ] , buf_num ) ; ring -> stats . tx_pkts ++ ; ring -> stats . tx_bytes += skb -> len ; return NETDEV_TX_OK ; out_map_frag_fail : while ( ring -> next_to_use != next_to_use ) { unfill_desc ( ring ) ; if ( ring -> next_to_use != next_to_use ) dma_unmap_page ( dev , ring -> desc_cb [ ring -> next_to_use ] . dma , ring -> desc_cb [ ring -> next_to_use ] . length , DMA_TO_DEVICE ) ; else dma_unmap_single ( dev , ring -> desc_cb [ next_to_use ] . dma , ring -> desc_cb [ next_to_use ] . length , DMA_TO_DEVICE ) ; } out_err_tx_ok : dev_kfree_skb_any ( skb ) ; return NETDEV_TX_OK ; out_net_tx_busy : netif_stop_subqueue ( ndev , skb -> queue_mapping ) ; smp_mb ( ) ; return NETDEV_TX_BUSY ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> netdev_tx_t <S2SV_ModEnd> hns_nic_net_xmit_hw ( struct <S2SV_ModStart> len ) ; netif_trans_update ( ndev ) ; ndev -> stats . tx_bytes += skb -> len ; ndev -> stats . tx_packets ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2671\n\n```\nCWE-000 void ping_unhash ( struct sock * sk ) { struct inet_sock * isk = inet_sk ( sk ) ; pr_debug ( \"ping_unhash(isk=%p,isk->num=%u)\\\\n\" , isk , isk -> inet_num ) ; <S2SV_StartBug> if ( sk_hashed ( sk ) ) { <S2SV_EndBug> <S2SV_StartBug> write_lock_bh ( & ping_table . lock ) ; <S2SV_EndBug> hlist_nulls_del ( & sk -> sk_nulls_node ) ; sk_nulls_node_init ( & sk -> sk_nulls_node ) ; sock_put ( sk ) ; isk -> inet_num = 0 ; isk -> inet_sport = 0 ; sock_prot_inuse_add ( sock_net ( sk ) , sk -> sk_prot , - 1 ) ; <S2SV_StartBug> write_unlock_bh ( & ping_table . lock ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inet_num ) ; write_lock_bh ( & ping_table . lock ) ; <S2SV_ModStart> ) ) { <S2SV_ModEnd> hlist_nulls_del ( & <S2SV_ModStart> 1 ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18208\n\n```\nCWE-835 static long madvise_willneed ( struct vm_area_struct * vma , struct vm_area_struct * * prev , unsigned long start , unsigned long end ) { struct file * file = vma -> vm_file ; <S2SV_StartBug> # ifdef CONFIG_SWAP <S2SV_EndBug> if ( ! file ) { <S2SV_StartBug> * prev = vma ; <S2SV_EndBug> force_swapin_readahead ( vma , start , end ) ; return 0 ; } if ( shmem_mapping ( file -> f_mapping ) ) { <S2SV_StartBug> * prev = vma ; <S2SV_EndBug> force_shm_swapin_readahead ( vma , start , end , file -> f_mapping ) ; return 0 ; } # else if ( ! file ) return - EBADF ; # endif if ( IS_DAX ( file_inode ( file ) ) ) { return 0 ; } <S2SV_StartBug> * prev = vma ; <S2SV_EndBug> start = ( ( start - vma -> vm_start ) >> PAGE_SHIFT ) + vma -> vm_pgoff ; if ( end > vma -> vm_end ) end = vma -> vm_end ; end = ( ( end - vma -> vm_start ) >> PAGE_SHIFT ) + vma -> vm_pgoff ; force_page_cache_readahead ( file -> f_mapping , file , start , end - start ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> vm_file ; * prev = vma ; <S2SV_ModStart> file ) { <S2SV_ModEnd> force_swapin_readahead ( vma <S2SV_ModStart> ) ) { <S2SV_ModEnd> force_shm_swapin_readahead ( vma <S2SV_ModStart> 0 ; } <S2SV_ModEnd> start = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0546\n\n```\nCWE-000 static int list_fields ( MYSQL * mysql , const char * db , const char * table , const char * wild ) { <S2SV_StartBug> char query [ 1024 ] , * end ; <S2SV_EndBug> MYSQL_RES * result ; MYSQL_ROW row ; ulong UNINIT_VAR ( rows ) ; if ( mysql_select_db ( mysql , db ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>connect<S2SV_blank>to<S2SV_blank>db:<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , my_progname , db , mysql_error ( mysql ) ) ; return 1 ; } if ( opt_count ) { <S2SV_StartBug> sprintf ( query , \"select<S2SV_blank>count(*)<S2SV_blank>from<S2SV_blank>`%s`\" , table ) ; <S2SV_EndBug> if ( mysql_query ( mysql , query ) || ! ( result = mysql_store_result ( mysql ) ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>get<S2SV_blank>record<S2SV_blank>count<S2SV_blank>for<S2SV_blank>db:<S2SV_blank>%s,<S2SV_blank>table:<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , my_progname , db , table , mysql_error ( mysql ) ) ; return 1 ; } row = mysql_fetch_row ( result ) ; rows = ( ulong ) strtoull ( row [ 0 ] , ( char * * ) 0 , 10 ) ; mysql_free_result ( result ) ; } <S2SV_StartBug> end = strmov ( strmov ( strmov ( query , \"show<S2SV_blank>/*!32332<S2SV_blank>FULL<S2SV_blank>*/<S2SV_blank>columns<S2SV_blank>from<S2SV_blank>`\" ) , table ) , \"`\" ) ; <S2SV_EndBug> <S2SV_StartBug> if ( wild && wild [ 0 ] ) <S2SV_EndBug> strxmov ( end , \"<S2SV_blank>like<S2SV_blank>\\'\" , wild , \"\\'\" , NullS ) ; if ( mysql_query ( mysql , query ) || ! ( result = mysql_store_result ( mysql ) ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>list<S2SV_blank>columns<S2SV_blank>in<S2SV_blank>db:<S2SV_blank>%s,<S2SV_blank>table:<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , my_progname , db , table , mysql_error ( mysql ) ) ; return 1 ; } printf ( \"Database:<S2SV_blank>%s<S2SV_blank><S2SV_blank>Table:<S2SV_blank>%s\" , db , table ) ; if ( opt_count ) printf ( \"<S2SV_blank><S2SV_blank>Rows:<S2SV_blank>%lu\" , rows ) ; if ( wild && wild [ 0 ] ) printf ( \"<S2SV_blank><S2SV_blank>Wildcard:<S2SV_blank>%s\" , wild ) ; putchar ( '\\\\n' ) ; print_res_header ( result ) ; while ( ( row = mysql_fetch_row ( result ) ) ) print_res_row ( result , row ) ; print_res_top ( result ) ; if ( opt_show_keys ) { <S2SV_StartBug> end = strmov ( strmov ( strmov ( query , \"show<S2SV_blank>keys<S2SV_blank>from<S2SV_blank>`\" ) , table ) , \"`\" ) ; <S2SV_EndBug> if ( mysql_query ( mysql , query ) || ! ( result = mysql_store_result ( mysql ) ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>list<S2SV_blank>keys<S2SV_blank>in<S2SV_blank>db:<S2SV_blank>%s,<S2SV_blank>table:<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , my_progname , db , table , mysql_error ( mysql ) ) ; return 1 ; } if ( mysql_num_rows ( result ) ) { print_res_header ( result ) ; while ( ( row = mysql_fetch_row ( result ) ) ) print_res_row ( result , row ) ; print_res_top ( result ) ; } else puts ( \"Table<S2SV_blank>has<S2SV_blank>no<S2SV_blank>keys\" ) ; } mysql_free_result ( result ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char query [ NAME_LEN + 100 ] ; int len <S2SV_ModEnd> ; MYSQL_RES * <S2SV_ModStart> opt_count ) { my_snprintf ( query , sizeof ( query ) <S2SV_ModEnd> , \"select<S2SV_blank>count(*)<S2SV_blank>from<S2SV_blank>`%s`\" , <S2SV_ModStart> ) ; } len = sizeof ( query ) ; len -= my_snprintf ( query , len , \"show<S2SV_blank>/*!32332<S2SV_blank>FULL<S2SV_blank>*/<S2SV_blank>columns<S2SV_blank>from<S2SV_blank>`%s`\" , table <S2SV_ModEnd> ) ; if <S2SV_ModStart> [ 0 ] && len ) strxnmov ( query + strlen ( query ) , len <S2SV_ModEnd> , \"<S2SV_blank>like<S2SV_blank>\\'\" , <S2SV_ModStart> opt_show_keys ) { my_snprintf ( query , sizeof ( query ) , \"show<S2SV_blank>keys<S2SV_blank>from<S2SV_blank>`%s`\" , table <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9994\n\n```\nCWE-119 static av_always_inline int vp78_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt , int is_vp7 ) { VP8Context * s = avctx -> priv_data ; int ret , i , referenced , num_jobs ; enum AVDiscard skip_thresh ; <S2SV_StartBug> VP8Frame * av_uninit ( curframe ) , * prev_frame ; <S2SV_EndBug> if ( is_vp7 ) ret = vp7_decode_frame_header ( s , avpkt -> data , avpkt -> size ) ; else ret = vp8_decode_frame_header ( s , avpkt -> data , avpkt -> size ) ; if ( ret < 0 ) goto err ; prev_frame = s -> framep [ VP56_FRAME_CURRENT ] ; referenced = s -> update_last || s -> update_golden == VP56_FRAME_CURRENT || s -> update_altref == VP56_FRAME_CURRENT ; skip_thresh = ! referenced ? AVDISCARD_NONREF : ! s -> keyframe ? AVDISCARD_NONKEY : AVDISCARD_ALL ; if ( avctx -> skip_frame >= skip_thresh ) { s -> invisible = 1 ; memcpy ( & s -> next_framep [ 0 ] , & s -> framep [ 0 ] , sizeof ( s -> framep [ 0 ] ) * 4 ) ; goto skip_decode ; } s -> deblock_filter = s -> filter . level && avctx -> skip_loop_filter < skip_thresh ; for ( i = 0 ; i < 5 ; i ++ ) if ( s -> frames [ i ] . tf . f -> data [ 0 ] && & s -> frames [ i ] != prev_frame && & s -> frames [ i ] != s -> framep [ VP56_FRAME_PREVIOUS ] && & s -> frames [ i ] != s -> framep [ VP56_FRAME_GOLDEN ] && & s -> frames [ i ] != s -> framep [ VP56_FRAME_GOLDEN2 ] ) vp8_release_frame ( s , & s -> frames [ i ] ) ; curframe = s -> framep [ VP56_FRAME_CURRENT ] = vp8_find_free_buffer ( s ) ; if ( ! s -> colorspace ) avctx -> colorspace = AVCOL_SPC_BT470BG ; if ( s -> fullrange ) avctx -> color_range = AVCOL_RANGE_JPEG ; else avctx -> color_range = AVCOL_RANGE_MPEG ; if ( ! s -> keyframe && ( ! s -> framep [ VP56_FRAME_PREVIOUS ] || ! s -> framep [ VP56_FRAME_GOLDEN ] || ! s -> framep [ VP56_FRAME_GOLDEN2 ] ) ) { av_log ( avctx , AV_LOG_WARNING , \"Discarding<S2SV_blank>interframe<S2SV_blank>without<S2SV_blank>a<S2SV_blank>prior<S2SV_blank>keyframe!\\\\n\" ) ; ret = AVERROR_INVALIDDATA ; goto err ; } curframe -> tf . f -> key_frame = s -> keyframe ; curframe -> tf . f -> pict_type = s -> keyframe ? AV_PICTURE_TYPE_I : AV_PICTURE_TYPE_P ; if ( ( ret = vp8_alloc_frame ( s , curframe , referenced ) ) < 0 ) goto err ; if ( s -> update_altref != VP56_FRAME_NONE ) s -> next_framep [ VP56_FRAME_GOLDEN2 ] = s -> framep [ s -> update_altref ] ; else s -> next_framep [ VP56_FRAME_GOLDEN2 ] = s -> framep [ VP56_FRAME_GOLDEN2 ] ; if ( s -> update_golden != VP56_FRAME_NONE ) s -> next_framep [ VP56_FRAME_GOLDEN ] = s -> framep [ s -> update_golden ] ; else s -> next_framep [ VP56_FRAME_GOLDEN ] = s -> framep [ VP56_FRAME_GOLDEN ] ; if ( s -> update_last ) s -> next_framep [ VP56_FRAME_PREVIOUS ] = curframe ; else s -> next_framep [ VP56_FRAME_PREVIOUS ] = s -> framep [ VP56_FRAME_PREVIOUS ] ; s -> next_framep [ VP56_FRAME_CURRENT ] = curframe ; if ( avctx -> codec -> update_thread_context ) ff_thread_finish_setup ( avctx ) ; s -> linesize = curframe -> tf . f -> linesize [ 0 ] ; s -> uvlinesize = curframe -> tf . f -> linesize [ 1 ] ; memset ( s -> top_nnz , 0 , s -> mb_width * sizeof ( * s -> top_nnz ) ) ; if ( ! s -> mb_layout ) memset ( s -> macroblocks + s -> mb_height * 2 - 1 , 0 , ( s -> mb_width + 1 ) * sizeof ( * s -> macroblocks ) ) ; if ( ! s -> mb_layout && s -> keyframe ) memset ( s -> intra4x4_pred_mode_top , DC_PRED , s -> mb_width * 4 ) ; memset ( s -> ref_count , 0 , sizeof ( s -> ref_count ) ) ; if ( s -> mb_layout == 1 ) { if ( prev_frame && s -> segmentation . enabled && ! s -> segmentation . update_map ) ff_thread_await_progress ( & prev_frame -> tf , 1 , 0 ) ; if ( is_vp7 ) vp7_decode_mv_mb_modes ( avctx , curframe , prev_frame ) ; else vp8_decode_mv_mb_modes ( avctx , curframe , prev_frame ) ; } if ( avctx -> active_thread_type == FF_THREAD_FRAME ) num_jobs = 1 ; else num_jobs = FFMIN ( s -> num_coeff_partitions , avctx -> thread_count ) ; s -> num_jobs = num_jobs ; s -> curframe = curframe ; s -> prev_frame = prev_frame ; s -> mv_bounds . mv_min . y = - MARGIN ; s -> mv_bounds . mv_max . y = ( ( s -> mb_height - 1 ) << 6 ) + MARGIN ; for ( i = 0 ; i < MAX_THREADS ; i ++ ) { VP8ThreadData * td = & s -> thread_data [ i ] ; atomic_init ( & td -> thread_mb_pos , 0 ) ; atomic_init ( & td -> wait_mb_pos , INT_MAX ) ; } if ( is_vp7 ) avctx -> execute2 ( avctx , vp7_decode_mb_row_sliced , s -> thread_data , NULL , num_jobs ) ; else avctx -> execute2 ( avctx , vp8_decode_mb_row_sliced , s -> thread_data , NULL , num_jobs ) ; ff_thread_report_progress ( & curframe -> tf , INT_MAX , 0 ) ; memcpy ( & s -> framep [ 0 ] , & s -> next_framep [ 0 ] , sizeof ( s -> framep [ 0 ] ) * 4 ) ; skip_decode : if ( ! s -> update_probabilities ) s -> prob [ 0 ] = s -> prob [ 1 ] ; if ( ! s -> invisible ) { if ( ( ret = av_frame_ref ( data , curframe -> tf . f ) ) < 0 ) return ret ; * got_frame = 1 ; } return avpkt -> size ; err : memcpy ( & s -> next_framep [ 0 ] , & s -> framep [ 0 ] , sizeof ( s -> framep [ 0 ] ) * 4 ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * prev_frame ; av_assert0 ( avctx -> pix_fmt == AV_PIX_FMT_YUVA420P || avctx -> pix_fmt == AV_PIX_FMT_YUV420P )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4565\n\n```\nCWE-264 static ssize_t ib_ucm_write ( struct file * filp , const char __user * buf , size_t len , loff_t * pos ) { struct ib_ucm_file * file = filp -> private_data ; struct ib_ucm_cmd_hdr hdr ; <S2SV_StartBug> ssize_t result ; <S2SV_EndBug> if ( len < sizeof ( hdr ) ) return - EINVAL ; if ( copy_from_user ( & hdr , buf , sizeof ( hdr ) ) ) return - EFAULT ; if ( hdr . cmd >= ARRAY_SIZE ( ucm_cmd_table ) ) return - EINVAL ; if ( hdr . in + sizeof ( hdr ) > len ) return - EINVAL ; result = ucm_cmd_table [ hdr . cmd ] ( file , buf + sizeof ( hdr ) , hdr . in , hdr . out ) ; if ( ! result ) result = len ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ssize_t result ; if ( WARN_ON_ONCE ( ! ib_safe_file_access ( filp ) ) ) return - EACCES\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vpx_img_free ( vpx_image_t * img ) { if ( img ) { if ( img -> img_data && img -> img_data_owner ) <S2SV_StartBug> img_buf_free ( img -> img_data ) ; <S2SV_EndBug> if ( img -> self_allocd ) free ( img ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> img_data_owner ) vpx_free <S2SV_ModEnd> ( img ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7163\n\n```\nCWE-125 opj_pi_iterator_t * opj_pi_create_decode ( opj_image_t * p_image , opj_cp_t * p_cp , OPJ_UINT32 p_tile_no ) { OPJ_UINT32 pino ; OPJ_UINT32 compno , resno ; OPJ_UINT32 * l_tmp_data ; OPJ_UINT32 * * l_tmp_ptr ; OPJ_UINT32 l_max_res ; OPJ_UINT32 l_max_prec ; OPJ_INT32 l_tx0 , l_tx1 , l_ty0 , l_ty1 ; OPJ_UINT32 l_dx_min , l_dy_min ; OPJ_UINT32 l_bound ; OPJ_UINT32 l_step_p , l_step_c , l_step_r , l_step_l ; OPJ_UINT32 l_data_stride ; opj_pi_iterator_t * l_pi = 00 ; opj_tcp_t * l_tcp = 00 ; const opj_tccp_t * l_tccp = 00 ; opj_pi_comp_t * l_current_comp = 00 ; opj_image_comp_t * l_img_comp = 00 ; opj_pi_iterator_t * l_current_pi = 00 ; OPJ_UINT32 * l_encoding_value_ptr = 00 ; assert ( p_cp != 00 ) ; assert ( p_image != 00 ) ; assert ( p_tile_no < p_cp -> tw * p_cp -> th ) ; l_tcp = & p_cp -> tcps [ p_tile_no ] ; l_bound = l_tcp -> numpocs + 1 ; l_data_stride = 4 * OPJ_J2K_MAXRLVLS ; l_tmp_data = ( OPJ_UINT32 * ) opj_malloc ( l_data_stride * p_image -> numcomps * sizeof ( OPJ_UINT32 ) ) ; if ( ! l_tmp_data ) { return 00 ; } l_tmp_ptr = ( OPJ_UINT32 * * ) opj_malloc ( p_image -> numcomps * sizeof ( OPJ_UINT32 * ) ) ; if ( ! l_tmp_ptr ) { opj_free ( l_tmp_data ) ; return 00 ; } l_pi = opj_pi_create ( p_image , p_cp , p_tile_no ) ; if ( ! l_pi ) { opj_free ( l_tmp_data ) ; opj_free ( l_tmp_ptr ) ; return 00 ; } l_encoding_value_ptr = l_tmp_data ; for ( compno = 0 ; compno < p_image -> numcomps ; ++ compno ) { l_tmp_ptr [ compno ] = l_encoding_value_ptr ; l_encoding_value_ptr += l_data_stride ; } opj_get_all_encoding_parameters ( p_image , p_cp , p_tile_no , & l_tx0 , & l_tx1 , & l_ty0 , & l_ty1 , & l_dx_min , & l_dy_min , & l_max_prec , & l_max_res , l_tmp_ptr ) ; l_step_p = 1 ; l_step_c = l_max_prec * l_step_p ; l_step_r = p_image -> numcomps * l_step_c ; l_step_l = l_max_res * l_step_r ; l_current_pi = l_pi ; l_current_pi -> include = 00 ; if ( l_step_l <= ( SIZE_MAX / ( l_tcp -> numlayers + 1U ) ) ) { <S2SV_StartBug> l_current_pi -> include = ( OPJ_INT16 * ) opj_calloc ( ( l_tcp -> numlayers + 1 ) * l_step_l , sizeof ( OPJ_INT16 ) ) ; <S2SV_EndBug> } if ( ! l_current_pi -> include ) { opj_free ( l_tmp_data ) ; opj_free ( l_tmp_ptr ) ; opj_pi_destroy ( l_pi , l_bound ) ; return 00 ; } l_current_comp = l_current_pi -> comps ; l_img_comp = p_image -> comps ; l_tccp = l_tcp -> tccps ; l_current_pi -> tx0 = l_tx0 ; l_current_pi -> ty0 = l_ty0 ; l_current_pi -> tx1 = l_tx1 ; l_current_pi -> ty1 = l_ty1 ; l_current_pi -> step_p = l_step_p ; l_current_pi -> step_c = l_step_c ; l_current_pi -> step_r = l_step_r ; l_current_pi -> step_l = l_step_l ; for ( compno = 0 ; compno < l_current_pi -> numcomps ; ++ compno ) { opj_pi_resolution_t * l_res = l_current_comp -> resolutions ; l_encoding_value_ptr = l_tmp_ptr [ compno ] ; l_current_comp -> dx = l_img_comp -> dx ; l_current_comp -> dy = l_img_comp -> dy ; for ( resno = 0 ; resno < l_current_comp -> numresolutions ; resno ++ ) { l_res -> pdx = * ( l_encoding_value_ptr ++ ) ; l_res -> pdy = * ( l_encoding_value_ptr ++ ) ; l_res -> pw = * ( l_encoding_value_ptr ++ ) ; l_res -> ph = * ( l_encoding_value_ptr ++ ) ; ++ l_res ; } ++ l_current_comp ; ++ l_img_comp ; ++ l_tccp ; } ++ l_current_pi ; for ( pino = 1 ; pino < l_bound ; ++ pino ) { l_current_comp = l_current_pi -> comps ; l_img_comp = p_image -> comps ; l_tccp = l_tcp -> tccps ; l_current_pi -> tx0 = l_tx0 ; l_current_pi -> ty0 = l_ty0 ; l_current_pi -> tx1 = l_tx1 ; l_current_pi -> ty1 = l_ty1 ; l_current_pi -> step_p = l_step_p ; l_current_pi -> step_c = l_step_c ; l_current_pi -> step_r = l_step_r ; l_current_pi -> step_l = l_step_l ; for ( compno = 0 ; compno < l_current_pi -> numcomps ; ++ compno ) { opj_pi_resolution_t * l_res = l_current_comp -> resolutions ; l_encoding_value_ptr = l_tmp_ptr [ compno ] ; l_current_comp -> dx = l_img_comp -> dx ; l_current_comp -> dy = l_img_comp -> dy ; for ( resno = 0 ; resno < l_current_comp -> numresolutions ; resno ++ ) { l_res -> pdx = * ( l_encoding_value_ptr ++ ) ; l_res -> pdy = * ( l_encoding_value_ptr ++ ) ; l_res -> pw = * ( l_encoding_value_ptr ++ ) ; l_res -> ph = * ( l_encoding_value_ptr ++ ) ; ++ l_res ; } ++ l_current_comp ; ++ l_img_comp ; ++ l_tccp ; } l_current_pi -> include = ( l_current_pi - 1 ) -> include ; ++ l_current_pi ; } opj_free ( l_tmp_data ) ; l_tmp_data = 00 ; opj_free ( l_tmp_ptr ) ; l_tmp_ptr = 00 ; if ( l_tcp -> POC ) { opj_pi_update_decode_poc ( l_pi , l_tcp , l_max_prec , l_max_res ) ; } else { opj_pi_update_decode_not_poc ( l_pi , l_tcp , l_max_prec , l_max_res ) ; } return l_pi ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> opj_calloc ( ( size_t ) ( <S2SV_ModStart> -> numlayers + 1U <S2SV_ModEnd> ) * l_step_l\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7418\n\n```\nCWE-59 static int get_default_root ( pool * p , int allow_symlinks , const char * * root ) { config_rec * c = NULL ; const char * dir = NULL ; int res ; c = find_config ( main_server -> conf , CONF_PARAM , \"DefaultRoot\" , FALSE ) ; while ( c != NULL ) { pr_signals_handle ( ) ; if ( c -> argc < 2 ) { dir = c -> argv [ 0 ] ; break ; } res = pr_expr_eval_group_and ( ( ( char * * ) c -> argv ) + 1 ) ; if ( res ) { dir = c -> argv [ 0 ] ; break ; } c = find_config_next ( c , c -> next , CONF_PARAM , \"DefaultRoot\" , FALSE ) ; } if ( dir != NULL ) { const char * new_dir ; new_dir = path_subst_uservar ( p , & dir ) ; if ( new_dir != NULL ) { dir = new_dir ; } if ( strncmp ( dir , \"/\" , 2 ) == 0 ) { dir = NULL ; } else { char * realdir ; int xerrno = 0 ; if ( allow_symlinks == FALSE ) { char * path , target_path [ PR_TUNABLE_PATH_MAX + 1 ] ; <S2SV_StartBug> struct stat st ; <S2SV_EndBug> size_t pathlen ; path = pstrdup ( p , dir ) ; if ( * path != '/' ) { if ( * path == '~' ) { if ( pr_fs_interpolate ( dir , target_path , sizeof ( target_path ) - 1 ) < 0 ) { return - 1 ; } path = target_path ; } } pathlen = strlen ( path ) ; if ( pathlen > 1 && path [ pathlen - 1 ] == '/' ) { path [ pathlen - 1 ] = '\\\\0' ; } <S2SV_StartBug> pr_fs_clear_cache2 ( path ) ; <S2SV_EndBug> res = pr_fsio_lstat ( path , & st ) ; if ( res < 0 ) { <S2SV_StartBug> xerrno = errno ; <S2SV_EndBug> <S2SV_StartBug> pr_log_pri ( PR_LOG_WARNING , \"error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>check<S2SV_blank>%s:<S2SV_blank>%s\" , path , <S2SV_EndBug> strerror ( xerrno ) ) ; errno = xerrno ; return - 1 ; } if ( S_ISLNK ( st . st_mode ) ) { pr_log_pri ( PR_LOG_WARNING , \"error:<S2SV_blank>DefaultRoot<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symlink<S2SV_blank>(denied<S2SV_blank>by<S2SV_blank>AllowChrootSymlinks<S2SV_blank>\" \"config)\" , path ) ; errno = EPERM ; return - 1 ; } } pr_fs_clear_cache2 ( dir ) ; PRIVS_USER realdir = dir_realpath ( p , dir ) ; xerrno = errno ; PRIVS_RELINQUISH if ( realdir ) { dir = realdir ; } else { char interp_dir [ PR_TUNABLE_PATH_MAX + 1 ] ; memset ( interp_dir , '\\\\0' , sizeof ( interp_dir ) ) ; ( void ) pr_fs_interpolate ( dir , interp_dir , sizeof ( interp_dir ) - 1 ) ; pr_log_pri ( PR_LOG_NOTICE , \"notice:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>use<S2SV_blank>DefaultRoot<S2SV_blank>\\'%s\\'<S2SV_blank>[resolved<S2SV_blank>to<S2SV_blank>\\'%s\\']:<S2SV_blank>%s\" , dir , interp_dir , strerror ( xerrno ) ) ; errno = xerrno ; } } } * root = dir ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ] ; <S2SV_ModEnd> size_t pathlen ; <S2SV_ModStart> '\\\\0' ; } res = is_symlink_path ( p , path , pathlen <S2SV_ModEnd> ) ; if <S2SV_ModStart> 0 ) { if ( errno == EPERM ) { <S2SV_ModEnd> pr_log_pri ( PR_LOG_WARNING <S2SV_ModStart> ( PR_LOG_WARNING , \"error:<S2SV_blank>DefaultRoot<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symlink<S2SV_blank>\" \"(denied<S2SV_blank>by<S2SV_blank>AllowChrootSymlinks<S2SV_blank>config)\" , path ) ; } <S2SV_ModEnd> errno = EPERM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-7841\n\n```\nCWE-399 static int sctp_process_param ( struct sctp_association * asoc , union sctp_params param , const union sctp_addr * peer_addr , gfp_t gfp ) { struct net * net = sock_net ( asoc -> base . sk ) ; union sctp_addr addr ; int i ; __u16 sat ; int retval = 1 ; sctp_scope_t scope ; time_t stale ; struct sctp_af * af ; union sctp_addr_param * addr_param ; struct sctp_transport * t ; struct sctp_endpoint * ep = asoc -> ep ; switch ( param . p -> type ) { case SCTP_PARAM_IPV6_ADDRESS : if ( PF_INET6 != asoc -> base . sk -> sk_family ) break ; goto do_addr_param ; case SCTP_PARAM_IPV4_ADDRESS : if ( ipv6_only_sock ( asoc -> base . sk ) ) break ; do_addr_param : af = sctp_get_af_specific ( param_type2af ( param . p -> type ) ) ; af -> from_addr_param ( & addr , param . addr , htons ( asoc -> peer . port ) , 0 ) ; scope = sctp_scope ( peer_addr ) ; if ( sctp_in_scope ( net , & addr , scope ) ) if ( ! sctp_assoc_add_peer ( asoc , & addr , gfp , SCTP_UNCONFIRMED ) ) return 0 ; break ; case SCTP_PARAM_COOKIE_PRESERVATIVE : if ( ! net -> sctp . cookie_preserve_enable ) break ; stale = ntohl ( param . life -> lifespan_increment ) ; asoc -> cookie_life = ktime_add_ms ( asoc -> cookie_life , stale ) ; break ; case SCTP_PARAM_HOST_NAME_ADDRESS : pr_debug ( \"%s:<S2SV_blank>unimplemented<S2SV_blank>SCTP_HOST_NAME_ADDRESS\\\\n\" , __func__ ) ; break ; case SCTP_PARAM_SUPPORTED_ADDRESS_TYPES : asoc -> peer . ipv4_address = 0 ; asoc -> peer . ipv6_address = 0 ; if ( peer_addr -> sa . sa_family == AF_INET6 ) asoc -> peer . ipv6_address = 1 ; else if ( peer_addr -> sa . sa_family == AF_INET ) asoc -> peer . ipv4_address = 1 ; sat = ntohs ( param . p -> length ) - sizeof ( sctp_paramhdr_t ) ; if ( sat ) sat /= sizeof ( __u16 ) ; for ( i = 0 ; i < sat ; ++ i ) { switch ( param . sat -> types [ i ] ) { case SCTP_PARAM_IPV4_ADDRESS : asoc -> peer . ipv4_address = 1 ; break ; case SCTP_PARAM_IPV6_ADDRESS : if ( PF_INET6 == asoc -> base . sk -> sk_family ) asoc -> peer . ipv6_address = 1 ; break ; case SCTP_PARAM_HOST_NAME_ADDRESS : asoc -> peer . hostname_address = 1 ; break ; default : break ; } } break ; case SCTP_PARAM_STATE_COOKIE : asoc -> peer . cookie_len = ntohs ( param . p -> length ) - sizeof ( sctp_paramhdr_t ) ; asoc -> peer . cookie = param . cookie -> body ; break ; case SCTP_PARAM_HEARTBEAT_INFO : break ; case SCTP_PARAM_UNRECOGNIZED_PARAMETERS : break ; case SCTP_PARAM_ECN_CAPABLE : asoc -> peer . ecn_capable = 1 ; break ; case SCTP_PARAM_ADAPTATION_LAYER_IND : asoc -> peer . adaptation_ind = ntohl ( param . aind -> adaptation_ind ) ; break ; case SCTP_PARAM_SET_PRIMARY : if ( ! net -> sctp . addip_enable ) goto fall_through ; addr_param = param . v + sizeof ( sctp_addip_param_t ) ; af = sctp_get_af_specific ( param_type2af ( param . p -> type ) ) ; <S2SV_StartBug> af -> from_addr_param ( & addr , addr_param , <S2SV_EndBug> htons ( asoc -> peer . port ) , 0 ) ; if ( ! af -> addr_valid ( & addr , NULL , NULL ) ) break ; t = sctp_assoc_lookup_paddr ( asoc , & addr ) ; if ( ! t ) break ; sctp_assoc_set_primary ( asoc , t ) ; break ; case SCTP_PARAM_SUPPORTED_EXT : sctp_process_ext_param ( asoc , param ) ; break ; case SCTP_PARAM_FWD_TSN_SUPPORT : if ( net -> sctp . prsctp_enable ) { asoc -> peer . prsctp_capable = 1 ; break ; } goto fall_through ; case SCTP_PARAM_RANDOM : if ( ! ep -> auth_enable ) goto fall_through ; asoc -> peer . peer_random = kmemdup ( param . p , ntohs ( param . p -> length ) , gfp ) ; if ( ! asoc -> peer . peer_random ) { retval = 0 ; break ; } break ; case SCTP_PARAM_HMAC_ALGO : if ( ! ep -> auth_enable ) goto fall_through ; asoc -> peer . peer_hmacs = kmemdup ( param . p , ntohs ( param . p -> length ) , gfp ) ; if ( ! asoc -> peer . peer_hmacs ) { retval = 0 ; break ; } sctp_auth_asoc_set_default_hmac ( asoc , param . hmac_algo ) ; break ; case SCTP_PARAM_CHUNKS : if ( ! ep -> auth_enable ) goto fall_through ; asoc -> peer . peer_chunks = kmemdup ( param . p , ntohs ( param . p -> length ) , gfp ) ; if ( ! asoc -> peer . peer_chunks ) retval = 0 ; break ; fall_through : default : pr_debug ( \"%s:<S2SV_blank>ignoring<S2SV_blank>param:%d<S2SV_blank>for<S2SV_blank>association:%p.\\\\n\" , __func__ , ntohs ( param . p -> type ) , asoc ) ; break ; } return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( af == NULL ) break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10057\n\n```\nCWE-119 MagickBooleanType sixel_decode ( unsigned char * p , unsigned char * * pixels , size_t * pwidth , size_t * pheight , unsigned char * * palette , size_t * ncolors ) { int n , i , r , g , b , sixel_vertical_mask , c ; int posision_x , posision_y ; int max_x , max_y ; int attributed_pan , attributed_pad ; int attributed_ph , attributed_pv ; int repeat_count , color_index , max_color_index = 2 , background_color_index ; int param [ 10 ] ; int sixel_palet [ SIXEL_PALETTE_MAX ] ; unsigned char * imbuf , * dmbuf ; int imsx , imsy ; int dmsx , dmsy ; int y ; posision_x = posision_y = 0 ; max_x = max_y = 0 ; attributed_pan = 2 ; attributed_pad = 1 ; attributed_ph = attributed_pv = 0 ; repeat_count = 1 ; color_index = 0 ; background_color_index = 0 ; imsx = 2048 ; imsy = 2048 ; <S2SV_StartBug> imbuf = ( unsigned char * ) AcquireQuantumMemory ( imsx * imsy , 1 ) ; <S2SV_EndBug> if ( imbuf == NULL ) { return ( MagickFalse ) ; } for ( n = 0 ; n < 16 ; n ++ ) { sixel_palet [ n ] = sixel_default_color_table [ n ] ; } for ( r = 0 ; r < 6 ; r ++ ) { for ( g = 0 ; g < 6 ; g ++ ) { for ( b = 0 ; b < 6 ; b ++ ) { sixel_palet [ n ++ ] = SIXEL_RGB ( r * 51 , g * 51 , b * 51 ) ; } } } for ( i = 0 ; i < 24 ; i ++ ) { sixel_palet [ n ++ ] = SIXEL_RGB ( i * 11 , i * 11 , i * 11 ) ; } for ( ; n < SIXEL_PALETTE_MAX ; n ++ ) { sixel_palet [ n ] = SIXEL_RGB ( 255 , 255 , 255 ) ; } <S2SV_StartBug> ( void ) ResetMagickMemory ( imbuf , background_color_index , imsx * imsy ) ; <S2SV_EndBug> while ( * p != '\\\\0' ) { if ( ( p [ 0 ] == '\\\\033' && p [ 1 ] == 'P' ) || * p == 0x90 ) { if ( * p == '\\\\033' ) { p ++ ; } p = get_params ( ++ p , param , & n ) ; if ( * p == 'q' ) { p ++ ; if ( n > 0 ) { switch ( param [ 0 ] ) { case 0 : case 1 : attributed_pad = 2 ; break ; case 2 : attributed_pad = 5 ; break ; case 3 : attributed_pad = 4 ; break ; case 4 : attributed_pad = 4 ; break ; case 5 : attributed_pad = 3 ; break ; case 6 : attributed_pad = 3 ; break ; case 7 : attributed_pad = 2 ; break ; case 8 : attributed_pad = 2 ; break ; case 9 : attributed_pad = 1 ; break ; } } if ( n > 2 ) { if ( param [ 2 ] == 0 ) { param [ 2 ] = 10 ; } attributed_pan = attributed_pan * param [ 2 ] / 10 ; attributed_pad = attributed_pad * param [ 2 ] / 10 ; if ( attributed_pan <= 0 ) attributed_pan = 1 ; if ( attributed_pad <= 0 ) attributed_pad = 1 ; } } } else if ( ( p [ 0 ] == '\\\\033' && p [ 1 ] == '\\\\\\\\' ) || * p == 0x9C ) { break ; } else if ( * p == \\'\"\\' ) { p = get_params ( ++ p , param , & n ) ; if ( n > 0 ) attributed_pad = param [ 0 ] ; if ( n > 1 ) attributed_pan = param [ 1 ] ; if ( n > 2 && param [ 2 ] > 0 ) attributed_ph = param [ 2 ] ; if ( n > 3 && param [ 3 ] > 0 ) attributed_pv = param [ 3 ] ; if ( attributed_pan <= 0 ) attributed_pan = 1 ; if ( attributed_pad <= 0 ) attributed_pad = 1 ; if ( imsx < attributed_ph || imsy < attributed_pv ) { dmsx = imsx > attributed_ph ? imsx : attributed_ph ; dmsy = imsy > attributed_pv ? imsy : attributed_pv ; <S2SV_StartBug> dmbuf = ( unsigned char * ) AcquireQuantumMemory ( dmsx * dmsy , 1 ) ; <S2SV_EndBug> if ( dmbuf == ( unsigned char * ) NULL ) { imbuf = ( unsigned char * ) RelinquishMagickMemory ( imbuf ) ; return ( MagickFalse ) ; } <S2SV_StartBug> ( void ) ResetMagickMemory ( dmbuf , background_color_index , dmsx * dmsy ) ; <S2SV_EndBug> for ( y = 0 ; y < imsy ; ++ y ) { ( void ) CopyMagickMemory ( dmbuf + dmsx * y , imbuf + imsx * y , imsx ) ; } imbuf = ( unsigned char * ) RelinquishMagickMemory ( imbuf ) ; imsx = dmsx ; imsy = dmsy ; imbuf = dmbuf ; } } else if ( * p == '!' ) { p = get_params ( ++ p , param , & n ) ; if ( n > 0 ) { repeat_count = param [ 0 ] ; } } else if ( * p == '#' ) { p = get_params ( ++ p , param , & n ) ; if ( n > 0 ) { if ( ( color_index = param [ 0 ] ) < 0 ) { color_index = 0 ; } else if ( color_index >= SIXEL_PALETTE_MAX ) { color_index = SIXEL_PALETTE_MAX - 1 ; } } if ( n > 4 ) { if ( param [ 1 ] == 1 ) { if ( param [ 2 ] > 360 ) param [ 2 ] = 360 ; if ( param [ 3 ] > 100 ) param [ 3 ] = 100 ; if ( param [ 4 ] > 100 ) param [ 4 ] = 100 ; sixel_palet [ color_index ] = hls_to_rgb ( param [ 2 ] * 100 / 360 , param [ 3 ] , param [ 4 ] ) ; } else if ( param [ 1 ] == 2 ) { if ( param [ 2 ] > 100 ) param [ 2 ] = 100 ; if ( param [ 3 ] > 100 ) param [ 3 ] = 100 ; if ( param [ 4 ] > 100 ) param [ 4 ] = 100 ; sixel_palet [ color_index ] = SIXEL_XRGB ( param [ 2 ] , param [ 3 ] , param [ 4 ] ) ; } } } else if ( * p == '$' ) { p ++ ; posision_x = 0 ; repeat_count = 1 ; } else if ( * p == '-' ) { p ++ ; posision_x = 0 ; posision_y += 6 ; repeat_count = 1 ; } else if ( * p >= '?' && * p <= '\\\\177' ) { if ( imsx < ( posision_x + repeat_count ) || imsy < ( posision_y + 6 ) ) { int nx = imsx * 2 ; int ny = imsy * 2 ; while ( nx < ( posision_x + repeat_count ) || ny < ( posision_y + 6 ) ) { nx *= 2 ; ny *= 2 ; } dmsx = nx ; dmsy = ny ; <S2SV_StartBug> dmbuf = ( unsigned char * ) AcquireQuantumMemory ( dmsx * dmsy , 1 ) ; <S2SV_EndBug> if ( dmbuf == ( unsigned char * ) NULL ) { imbuf = ( unsigned char * ) RelinquishMagickMemory ( imbuf ) ; return ( MagickFalse ) ; } <S2SV_StartBug> ( void ) ResetMagickMemory ( dmbuf , background_color_index , dmsx * dmsy ) ; <S2SV_EndBug> for ( y = 0 ; y < imsy ; ++ y ) { ( void ) CopyMagickMemory ( dmbuf + dmsx * y , imbuf + imsx * y , imsx ) ; } imbuf = ( unsigned char * ) RelinquishMagickMemory ( imbuf ) ; imsx = dmsx ; imsy = dmsy ; imbuf = dmbuf ; } if ( color_index > max_color_index ) { max_color_index = color_index ; } if ( ( b = * ( p ++ ) - '?' ) == 0 ) { posision_x += repeat_count ; } else { sixel_vertical_mask = 0x01 ; if ( repeat_count <= 1 ) { for ( i = 0 ; i < 6 ; i ++ ) { if ( ( b & sixel_vertical_mask ) != 0 ) { imbuf [ imsx * ( posision_y + i ) + posision_x ] = color_index ; if ( max_x < posision_x ) { max_x = posision_x ; } if ( max_y < ( posision_y + i ) ) { max_y = posision_y + i ; } } sixel_vertical_mask <<= 1 ; } posision_x += 1 ; } else { for ( i = 0 ; i < 6 ; i ++ ) { if ( ( b & sixel_vertical_mask ) != 0 ) { c = sixel_vertical_mask << 1 ; for ( n = 1 ; ( i + n ) < 6 ; n ++ ) { if ( ( b & c ) == 0 ) { break ; } c <<= 1 ; } for ( y = posision_y + i ; y < posision_y + i + n ; ++ y ) { <S2SV_StartBug> ( void ) ResetMagickMemory ( imbuf + imsx * y + posision_x , color_index , repeat_count ) ; <S2SV_EndBug> } if ( max_x < ( posision_x + repeat_count - 1 ) ) { max_x = posision_x + repeat_count - 1 ; } if ( max_y < ( posision_y + i + n - 1 ) ) { max_y = posision_y + i + n - 1 ; } i += ( n - 1 ) ; sixel_vertical_mask <<= ( n - 1 ) ; } sixel_vertical_mask <<= 1 ; } posision_x += repeat_count ; } } repeat_count = 1 ; } else { p ++ ; } } if ( ++ max_x < attributed_ph ) { max_x = attributed_ph ; } if ( ++ max_y < attributed_pv ) { max_y = attributed_pv ; } if ( imsx > max_x || imsy > max_y ) { dmsx = max_x ; dmsy = max_y ; <S2SV_StartBug> if ( ( dmbuf = ( unsigned char * ) AcquireQuantumMemory ( dmsx * dmsy , 1 ) ) == NULL ) { <S2SV_EndBug> imbuf = ( unsigned char * ) RelinquishMagickMemory ( imbuf ) ; return ( MagickFalse ) ; } for ( y = 0 ; y < dmsy ; ++ y ) { ( void ) CopyMagickMemory ( dmbuf + dmsx * y , imbuf + imsx * y , dmsx ) ; } imbuf = ( unsigned char * ) RelinquishMagickMemory ( imbuf ) ; imsx = dmsx ; imsy = dmsy ; imbuf = dmbuf ; } * pixels = imbuf ; * pwidth = imsx ; * pheight = imsy ; * ncolors = max_color_index + 1 ; * palette = ( unsigned char * ) AcquireQuantumMemory ( * ncolors , 4 ) ; for ( n = 0 ; n < ( ssize_t ) * ncolors ; ++ n ) { ( * palette ) [ n * 4 + 0 ] = sixel_palet [ n ] >> 16 & 0xff ; ( * palette ) [ n * 4 + 1 ] = sixel_palet [ n ] >> 8 & 0xff ; ( * palette ) [ n * 4 + 2 ] = sixel_palet [ n ] & 0xff ; ( * palette ) [ n * 4 + 3 ] = 0xff ; } return ( MagickTrue ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> AcquireQuantumMemory ( imsx , imsy <S2SV_ModEnd> ) ; if <S2SV_ModStart> , background_color_index , ( size_t ) <S2SV_ModStart> AcquireQuantumMemory ( dmsx , dmsy <S2SV_ModEnd> ) ; if <S2SV_ModStart> , background_color_index , ( size_t ) <S2SV_ModStart> AcquireQuantumMemory ( dmsx , dmsy <S2SV_ModEnd> ) ; if <S2SV_ModStart> , background_color_index , ( size_t ) <S2SV_ModStart> ( imbuf + ( size_t ) <S2SV_ModStart> AcquireQuantumMemory ( dmsx , dmsy <S2SV_ModEnd> ) ) ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14469\n\n```\nCWE-125 static const u_char * ikev1_n_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , const u_char * ep , uint32_t phase _U_ , uint32_t doi0 _U_ , uint32_t proto0 _U_ , int depth _U_ ) { const struct ikev1_pl_n * p ; struct ikev1_pl_n n ; const u_char * cp ; const u_char * ep2 ; uint32_t doi ; uint32_t proto ; static const char * notify_error_str [ ] = { NULL , \"INVALID-PAYLOAD-TYPE\" , \"DOI-NOT-SUPPORTED\" , \"SITUATION-NOT-SUPPORTED\" , \"INVALID-COOKIE\" , \"INVALID-MAJOR-VERSION\" , \"INVALID-MINOR-VERSION\" , \"INVALID-EXCHANGE-TYPE\" , \"INVALID-FLAGS\" , \"INVALID-MESSAGE-ID\" , \"INVALID-PROTOCOL-ID\" , \"INVALID-SPI\" , \"INVALID-TRANSFORM-ID\" , \"ATTRIBUTES-NOT-SUPPORTED\" , \"NO-PROPOSAL-CHOSEN\" , \"BAD-PROPOSAL-SYNTAX\" , \"PAYLOAD-MALFORMED\" , \"INVALID-KEY-INFORMATION\" , \"INVALID-ID-INFORMATION\" , \"INVALID-CERT-ENCODING\" , \"INVALID-CERTIFICATE\" , \"CERT-TYPE-UNSUPPORTED\" , \"INVALID-CERT-AUTHORITY\" , \"INVALID-HASH-INFORMATION\" , \"AUTHENTICATION-FAILED\" , \"INVALID-SIGNATURE\" , \"ADDRESS-NOTIFICATION\" , \"NOTIFY-SA-LIFETIME\" , \"CERTIFICATE-UNAVAILABLE\" , \"UNSUPPORTED-EXCHANGE-TYPE\" , \"UNEQUAL-PAYLOAD-LENGTHS\" , } ; static const char * ipsec_notify_error_str [ ] = { \"RESERVED\" , } ; static const char * notify_status_str [ ] = { \"CONNECTED\" , } ; static const char * ipsec_notify_status_str [ ] = { \"RESPONDER-LIFETIME\" , \"REPLAY-STATUS\" , \"INITIAL-CONTACT\" , } ; # define NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( x ) , notify_error_str ) # define IPSEC_NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 8192 ) , ipsec_notify_error_str ) # define NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 16384 ) , notify_status_str ) # define IPSEC_NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 24576 ) , ipsec_notify_status_str ) ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; p = ( const struct ikev1_pl_n * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & n , ext , sizeof ( n ) ) ; doi = ntohl ( n . doi ) ; proto = n . prot_id ; if ( doi != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>doi=%d\" , doi ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%d\" , proto ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } return ( const u_char * ) ( p + 1 ) + n . spi_size ; } ND_PRINT ( ( ndo , \"<S2SV_blank>doi=ipsec\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%s\" , PROTOIDSTR ( proto ) ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 32768 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } cp = ( const u_char * ) ( p + 1 ) + n . spi_size ; ep2 = ( const u_char * ) p + item_len ; if ( cp < ep ) { switch ( ntohs ( n . type ) ) { case IPSECDOI_NTYPE_RESPONDER_LIFETIME : { const struct attrmap * map = oakley_t_map ; size_t nmap = sizeof ( oakley_t_map ) / sizeof ( oakley_t_map [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>attrs=(\" ) ) ; while ( cp < ep && cp < ep2 ) { cp = ikev1_attrmap_print ( ndo , cp , ep2 , map , nmap ) ; if ( cp == NULL ) { ND_PRINT ( ( ndo , \")\" ) ) ; goto trunc ; } } ND_PRINT ( ( ndo , \")\" ) ) ; break ; } case IPSECDOI_NTYPE_REPLAY_STATUS : ND_PRINT ( ( ndo , \"<S2SV_blank>status=(\" ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"replay<S2SV_blank>detection<S2SV_blank>%sabled\" , <S2SV_EndBug> EXTRACT_32BITS ( cp ) ? \"en\" : \"dis\" ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; default : if ( ndo -> ndo_vflag > 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>data=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( cp ) , ep - cp ) ) goto trunc ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { if ( ! ike_show_somedata ( ndo , cp , ep ) ) goto trunc ; } break ; } } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ND_TCHECK_32BITS ( cp ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 void WT_InterpolateNoLoop ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame ) { EAS_PCM * pOutputBuffer ; EAS_I32 phaseInc ; EAS_I32 phaseFrac ; EAS_I32 acc0 ; const EAS_SAMPLE * pSamples ; EAS_I32 samp1 ; EAS_I32 samp2 ; EAS_I32 numSamples ; numSamples = pWTIntFrame -> numSamples ; if ( numSamples <= 0 ) { <S2SV_StartBug> ALOGE ( \"b/26366256\" ) ; <S2SV_EndBug> return ; } pOutputBuffer = pWTIntFrame -> pAudioBuffer ; phaseInc = pWTIntFrame -> frame . phaseIncrement ; pSamples = ( const EAS_SAMPLE * ) pWTVoice -> phaseAccum ; phaseFrac = ( EAS_I32 ) pWTVoice -> phaseFrac ; # if defined ( _8_BIT_SAMPLES ) samp1 = pSamples [ 0 ] << 8 ; samp2 = pSamples [ 1 ] << 8 ; # else samp1 = pSamples [ 0 ] ; samp2 = pSamples [ 1 ] ; # endif while ( numSamples -- ) { acc0 = samp2 - samp1 ; acc0 = acc0 * phaseFrac ; acc0 = samp1 + ( acc0 >> NUM_PHASE_FRAC_BITS ) ; * pOutputBuffer ++ = ( EAS_I16 ) ( acc0 >> 2 ) ; phaseFrac += phaseInc ; acc0 = phaseFrac >> NUM_PHASE_FRAC_BITS ; if ( acc0 > 0 ) { pSamples += acc0 ; phaseFrac = ( EAS_I32 ) ( ( EAS_U32 ) phaseFrac & PHASE_FRAC_MASK ) ; # if defined ( _8_BIT_SAMPLES ) samp1 = pSamples [ 0 ] << 8 ; samp2 = pSamples [ 1 ] << 8 ; # else samp1 = pSamples [ 0 ] ; samp2 = pSamples [ 1 ] ; # endif } } pWTVoice -> phaseAccum = ( EAS_U32 ) pSamples ; pWTVoice -> phaseFrac = ( EAS_U32 ) phaseFrac ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ALOGE ( \"b/26366256\" ) ; android_errorWriteLog ( 0x534e4554 , \"26366256\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3695\n\n```\nCWE-74 static int einj_error_inject ( u32 type , u32 flags , u64 param1 , u64 param2 , u64 param3 , u64 param4 ) { int rc ; <S2SV_StartBug> u64 base_addr , size ; <S2SV_EndBug> if ( flags && ( flags & ~ ( SETWA_FLAGS_APICID | SETWA_FLAGS_MEM | SETWA_FLAGS_PCIE_SBDF ) ) ) return - EINVAL ; if ( ! ( param_extension || acpi5 ) ) goto inject ; if ( type & ACPI5_VENDOR_BIT ) { if ( vendor_flags != SETWA_FLAGS_MEM ) goto inject ; } else if ( ! ( type & MEM_ERROR_MASK ) && ! ( flags & SETWA_FLAGS_MEM ) ) goto inject ; base_addr = param1 & param2 ; size = ~ param2 + 1 ; if ( ( ( param2 & PAGE_MASK ) != PAGE_MASK ) || ( ( region_intersects ( base_addr , size , IORESOURCE_SYSTEM_RAM , IORES_DESC_NONE ) != REGION_INTERSECTS ) && ( region_intersects ( base_addr , size , IORESOURCE_MEM , IORES_DESC_PERSISTENT_MEMORY ) != REGION_INTERSECTS ) ) ) return - EINVAL ; inject : mutex_lock ( & einj_mutex ) ; rc = __einj_error_inject ( type , flags , param1 , param2 , param3 , param4 ) ; mutex_unlock ( & einj_mutex ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base_addr , size ; if ( get_securelevel ( ) > 0 ) return - EPERM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20788\n\n```\nCWE-190 rfbBool HandleCursorShape ( rfbClient * client , int xhot , int yhot , int width , int height , uint32_t enc ) { int bytesPerPixel ; size_t bytesPerRow , bytesMaskData ; rfbXCursorColors rgb ; uint32_t colors [ 2 ] ; char * buf ; uint8_t * ptr ; int x , y , b ; bytesPerPixel = client -> format . bitsPerPixel / 8 ; bytesPerRow = ( width + 7 ) / 8 ; bytesMaskData = bytesPerRow * height ; if ( width * height == 0 ) return TRUE ; <S2SV_StartBug> if ( client -> rcSource ) <S2SV_EndBug> free ( client -> rcSource ) ; client -> rcSource = malloc ( width * height * bytesPerPixel ) ; if ( client -> rcSource == NULL ) return FALSE ; buf = malloc ( bytesMaskData ) ; if ( buf == NULL ) { free ( client -> rcSource ) ; client -> rcSource = NULL ; return FALSE ; } if ( enc == rfbEncodingXCursor ) { if ( ! ReadFromRFBServer ( client , ( char * ) & rgb , sz_rfbXCursorColors ) ) { free ( client -> rcSource ) ; client -> rcSource = NULL ; free ( buf ) ; return FALSE ; } colors [ 0 ] = RGB24_TO_PIXEL ( 32 , rgb . backRed , rgb . backGreen , rgb . backBlue ) ; colors [ 1 ] = RGB24_TO_PIXEL ( 32 , rgb . foreRed , rgb . foreGreen , rgb . foreBlue ) ; if ( ! ReadFromRFBServer ( client , buf , bytesMaskData ) ) { free ( client -> rcSource ) ; client -> rcSource = NULL ; free ( buf ) ; return FALSE ; } ptr = client -> rcSource ; for ( y = 0 ; y < height ; y ++ ) { for ( x = 0 ; x < width / 8 ; x ++ ) { for ( b = 7 ; b >= 0 ; b -- ) { * ptr = buf [ y * bytesPerRow + x ] >> b & 1 ; ptr += bytesPerPixel ; } } for ( b = 7 ; b > 7 - width % 8 ; b -- ) { * ptr = buf [ y * bytesPerRow + x ] >> b & 1 ; ptr += bytesPerPixel ; } } switch ( bytesPerPixel ) { case 1 : for ( x = 0 ; x < width * height ; x ++ ) client -> rcSource [ x ] = ( uint8_t ) colors [ client -> rcSource [ x ] ] ; break ; case 2 : for ( x = 0 ; x < width * height ; x ++ ) ( ( uint16_t * ) client -> rcSource ) [ x ] = ( uint16_t ) colors [ client -> rcSource [ x * 2 ] ] ; break ; case 4 : for ( x = 0 ; x < width * height ; x ++ ) ( ( uint32_t * ) client -> rcSource ) [ x ] = colors [ client -> rcSource [ x * 4 ] ] ; break ; } } else { if ( ! ReadFromRFBServer ( client , ( char * ) client -> rcSource , width * height * bytesPerPixel ) ) { free ( client -> rcSource ) ; client -> rcSource = NULL ; free ( buf ) ; return FALSE ; } } if ( ! ReadFromRFBServer ( client , buf , bytesMaskData ) ) { free ( client -> rcSource ) ; client -> rcSource = NULL ; free ( buf ) ; return FALSE ; } client -> rcMask = malloc ( width * height ) ; if ( client -> rcMask == NULL ) { free ( client -> rcSource ) ; client -> rcSource = NULL ; free ( buf ) ; return FALSE ; } ptr = client -> rcMask ; for ( y = 0 ; y < height ; y ++ ) { for ( x = 0 ; x < width / 8 ; x ++ ) { for ( b = 7 ; b >= 0 ; b -- ) { * ptr ++ = buf [ y * bytesPerRow + x ] >> b & 1 ; } } for ( b = 7 ; b > 7 - width % 8 ; b -- ) { * ptr ++ = buf [ y * bytesPerRow + x ] >> b & 1 ; } } if ( client -> GotCursorShape != NULL ) { client -> GotCursorShape ( client , xhot , yhot , width , height , bytesPerPixel ) ; } free ( buf ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( width >= MAX_CURSOR_SIZE || height >= MAX_CURSOR_SIZE ) return FALSE ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10189\n\n```\nCWE-476 file_transfer_t * imcb_file_send_start ( struct im_connection * ic , char * handle , char * file_name , size_t file_size ) { bee_t * bee = ic -> bee ; bee_user_t * bu = bee_user_by_handle ( bee , ic , handle ) ; <S2SV_StartBug> if ( bee -> ui -> ft_in_start ) { <S2SV_EndBug> return bee -> ui -> ft_in_start ( bee , bu , file_name , file_size ) ; } else { return NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ui -> ft_in_start && bu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-30022\n\n```\nCWE-190 static s32 gf_hevc_read_sps_bs_internal ( GF_BitStream * bs , HEVCState * hevc , u8 layer_id , u32 * vui_flag_pos ) { s32 vps_id , sps_id = - 1 ; u32 i , nb_CTUs , depth ; HEVC_SPS * sps ; HEVC_VPS * vps ; HEVC_ProfileTierLevel ptl ; Bool multiLayerExtSpsFlag ; u8 sps_ext_or_max_sub_layers_minus1 , max_sub_layers_minus1 ; if ( vui_flag_pos ) * vui_flag_pos = 0 ; vps_id = gf_bs_read_int_log ( bs , 4 , \"vps_id\" ) ; <S2SV_StartBug> if ( vps_id >= 16 ) { <S2SV_EndBug> return - 1 ; } memset ( & ptl , 0 , sizeof ( ptl ) ) ; max_sub_layers_minus1 = 0 ; sps_ext_or_max_sub_layers_minus1 = 0 ; if ( layer_id == 0 ) max_sub_layers_minus1 = gf_bs_read_int_log ( bs , 3 , \"max_sub_layers_minus1\" ) ; else sps_ext_or_max_sub_layers_minus1 = gf_bs_read_int_log ( bs , 3 , \"sps_ext_or_max_sub_layers_minus1\" ) ; multiLayerExtSpsFlag = ( layer_id != 0 ) && ( sps_ext_or_max_sub_layers_minus1 == 7 ) ; if ( ! multiLayerExtSpsFlag ) { gf_bs_read_int_log ( bs , 1 , \"temporal_id_nesting_flag\" ) ; hevc_profile_tier_level ( bs , 1 , max_sub_layers_minus1 , & ptl , 0 ) ; } sps_id = gf_bs_read_ue_log ( bs , \"sps_id\" ) ; if ( ( sps_id < 0 ) || ( sps_id >= 16 ) ) { return - 1 ; } sps = & hevc -> sps [ sps_id ] ; if ( ! sps -> state ) { sps -> state = 1 ; sps -> id = sps_id ; sps -> vps_id = vps_id ; } sps -> ptl = ptl ; vps = & hevc -> vps [ vps_id ] ; sps -> max_sub_layers_minus1 = 0 ; sps -> sps_ext_or_max_sub_layers_minus1 = 0 ; sps -> colour_primaries = 2 ; sps -> transfer_characteristic = 2 ; sps -> matrix_coeffs = 2 ; if ( multiLayerExtSpsFlag ) { sps -> update_rep_format_flag = gf_bs_read_int_log ( bs , 1 , \"update_rep_format_flag\" ) ; if ( sps -> update_rep_format_flag ) { sps -> rep_format_idx = gf_bs_read_int_log ( bs , 8 , \"rep_format_idx\" ) ; } else { sps -> rep_format_idx = vps -> rep_format_idx [ layer_id ] ; } sps -> width = vps -> rep_formats [ sps -> rep_format_idx ] . pic_width_luma_samples ; sps -> height = vps -> rep_formats [ sps -> rep_format_idx ] . pic_height_luma_samples ; sps -> chroma_format_idc = vps -> rep_formats [ sps -> rep_format_idx ] . chroma_format_idc ; sps -> bit_depth_luma = vps -> rep_formats [ sps -> rep_format_idx ] . bit_depth_luma ; sps -> bit_depth_chroma = vps -> rep_formats [ sps -> rep_format_idx ] . bit_depth_chroma ; sps -> separate_colour_plane_flag = vps -> rep_formats [ sps -> rep_format_idx ] . separate_colour_plane_flag ; sps -> ptl = vps -> ext_ptl [ 0 ] ; } else { sps -> chroma_format_idc = gf_bs_read_ue_log ( bs , \"chroma_format_idc\" ) ; if ( sps -> chroma_format_idc == 3 ) sps -> separate_colour_plane_flag = gf_bs_read_int_log ( bs , 1 , \"separate_colour_plane_flag\" ) ; sps -> width = gf_bs_read_ue_log ( bs , \"width\" ) ; sps -> height = gf_bs_read_ue_log ( bs , \"height\" ) ; if ( ( sps -> cw_flag = gf_bs_read_int_log ( bs , 1 , \"conformance_window_flag\" ) ) ) { u32 SubWidthC , SubHeightC ; if ( sps -> chroma_format_idc == 1 ) { SubWidthC = SubHeightC = 2 ; } else if ( sps -> chroma_format_idc == 2 ) { SubWidthC = 2 ; SubHeightC = 1 ; } else { SubWidthC = SubHeightC = 1 ; } sps -> cw_left = gf_bs_read_ue_log ( bs , \"conformance_window_left\" ) ; sps -> cw_right = gf_bs_read_ue_log ( bs , \"conformance_window_right\" ) ; sps -> cw_top = gf_bs_read_ue_log ( bs , \"conformance_window_top\" ) ; sps -> cw_bottom = gf_bs_read_ue_log ( bs , \"conformance_window_bottom\" ) ; sps -> width -= SubWidthC * ( sps -> cw_left + sps -> cw_right ) ; sps -> height -= SubHeightC * ( sps -> cw_top + sps -> cw_bottom ) ; } sps -> bit_depth_luma = 8 + gf_bs_read_ue_log ( bs , \"bit_depth_luma_minus8\" ) ; sps -> bit_depth_chroma = 8 + gf_bs_read_ue_log ( bs , \"bit_depth_chroma_minus8\" ) ; } sps -> log2_max_pic_order_cnt_lsb = 4 + gf_bs_read_ue_log ( bs , \"log2_max_pic_order_cnt_lsb_minus4\" ) ; if ( ! multiLayerExtSpsFlag ) { sps -> sub_layer_ordering_info_present_flag = gf_bs_read_int_log ( bs , 1 , \"sub_layer_ordering_info_present_flag\" ) ; for ( i = sps -> sub_layer_ordering_info_present_flag ? 0 : sps -> max_sub_layers_minus1 ; i <= sps -> max_sub_layers_minus1 ; i ++ ) { gf_bs_read_ue_log_idx ( bs , \"max_dec_pic_buffering\" , i ) ; gf_bs_read_ue_log_idx ( bs , \"num_reorder_pics\" , i ) ; gf_bs_read_ue_log_idx ( bs , \"max_latency_increase\" , i ) ; } } sps -> log2_min_luma_coding_block_size = 3 + gf_bs_read_ue_log ( bs , \"log2_min_luma_coding_block_size_minus3\" ) ; sps -> log2_diff_max_min_luma_coding_block_size = gf_bs_read_ue_log ( bs , \"log2_diff_max_min_luma_coding_block_size\" ) ; sps -> max_CU_width = ( 1 << ( sps -> log2_min_luma_coding_block_size + sps -> log2_diff_max_min_luma_coding_block_size ) ) ; sps -> max_CU_height = ( 1 << ( sps -> log2_min_luma_coding_block_size + sps -> log2_diff_max_min_luma_coding_block_size ) ) ; sps -> log2_min_transform_block_size = 2 + gf_bs_read_ue_log ( bs , \"log2_min_transform_block_size_minus2\" ) ; sps -> log2_max_transform_block_size = sps -> log2_min_transform_block_size + gf_bs_read_ue_log ( bs , \"log2_max_transform_block_size\" ) ; depth = 0 ; sps -> max_transform_hierarchy_depth_inter = gf_bs_read_ue_log ( bs , \"max_transform_hierarchy_depth_inter\" ) ; sps -> max_transform_hierarchy_depth_intra = gf_bs_read_ue_log ( bs , \"max_transform_hierarchy_depth_intra\" ) ; while ( ( u32 ) ( sps -> max_CU_width >> sps -> log2_diff_max_min_luma_coding_block_size ) > ( u32 ) ( 1 << ( sps -> log2_min_transform_block_size + depth ) ) ) { depth ++ ; } sps -> max_CU_depth = sps -> log2_diff_max_min_luma_coding_block_size + depth ; nb_CTUs = ( ( sps -> width + sps -> max_CU_width - 1 ) / sps -> max_CU_width ) * ( ( sps -> height + sps -> max_CU_height - 1 ) / sps -> max_CU_height ) ; sps -> bitsSliceSegmentAddress = 0 ; while ( nb_CTUs > ( u32 ) ( 1 << sps -> bitsSliceSegmentAddress ) ) { sps -> bitsSliceSegmentAddress ++ ; } sps -> scaling_list_enable_flag = gf_bs_read_int_log ( bs , 1 , \"scaling_list_enable_flag\" ) ; if ( sps -> scaling_list_enable_flag ) { sps -> infer_scaling_list_flag = 0 ; sps -> scaling_list_ref_layer_id = 0 ; if ( multiLayerExtSpsFlag ) { sps -> infer_scaling_list_flag = gf_bs_read_int_log ( bs , 1 , \"infer_scaling_list_flag\" ) ; } if ( sps -> infer_scaling_list_flag ) { sps -> scaling_list_ref_layer_id = gf_bs_read_int_log ( bs , 6 , \"scaling_list_ref_layer_id\" ) ; } else { sps -> scaling_list_data_present_flag = gf_bs_read_int_log ( bs , 1 , \"scaling_list_data_present_flag\" ) ; if ( sps -> scaling_list_data_present_flag ) { hevc_scaling_list_data ( bs ) ; } } } sps -> asymmetric_motion_partitions_enabled_flag = gf_bs_read_int_log ( bs , 1 , \"asymmetric_motion_partitions_enabled_flag\" ) ; sps -> sample_adaptive_offset_enabled_flag = gf_bs_read_int_log ( bs , 1 , \"sample_adaptive_offset_enabled_flag\" ) ; if ( ( sps -> pcm_enabled_flag = gf_bs_read_int_log ( bs , 1 , \"pcm_enabled_flag\" ) ) ) { sps -> pcm_sample_bit_depth_luma_minus1 = gf_bs_read_int_log ( bs , 4 , \"pcm_sample_bit_depth_luma_minus1\" ) ; sps -> pcm_sample_bit_depth_chroma_minus1 = gf_bs_read_int_log ( bs , 4 , \"pcm_sample_bit_depth_chroma_minus1\" ) ; sps -> log2_min_pcm_luma_coding_block_size_minus3 = gf_bs_read_ue_log ( bs , \"log2_min_pcm_luma_coding_block_size_minus3\" ) ; sps -> log2_diff_max_min_pcm_luma_coding_block_size = gf_bs_read_ue_log ( bs , \"log2_diff_max_min_pcm_luma_coding_block_size\" ) ; sps -> pcm_loop_filter_disable_flag = gf_bs_read_int_log ( bs , 1 , \"pcm_loop_filter_disable_flag\" ) ; } sps -> num_short_term_ref_pic_sets = gf_bs_read_ue_log ( bs , \"num_short_term_ref_pic_sets\" ) ; if ( sps -> num_short_term_ref_pic_sets > 64 ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CODING , ( \"[HEVC]<S2SV_blank>Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>short<S2SV_blank>term<S2SV_blank>reference<S2SV_blank>picture<S2SV_blank>sets<S2SV_blank>%d\\\\n\" , sps -> num_short_term_ref_pic_sets ) ) ; return - 1 ; } for ( i = 0 ; i < sps -> num_short_term_ref_pic_sets ; i ++ ) { Bool ret = hevc_parse_short_term_ref_pic_set ( bs , sps , i ) ; if ( ! ret ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CODING , ( \"[HEVC]<S2SV_blank>Invalid<S2SV_blank>short_term_ref_pic_set\\\\n\" ) ) ; return - 1 ; } } sps -> long_term_ref_pics_present_flag = gf_bs_read_int_log ( bs , 1 , \"long_term_ref_pics_present_flag\" ) ; if ( sps -> long_term_ref_pics_present_flag ) { sps -> num_long_term_ref_pic_sps = gf_bs_read_ue_log ( bs , \"num_long_term_ref_pic_sps\" ) ; for ( i = 0 ; i < sps -> num_long_term_ref_pic_sps ; i ++ ) { gf_bs_read_int_log_idx ( bs , sps -> log2_max_pic_order_cnt_lsb , \"lt_ref_pic_poc_lsb_sps\" , i ) ; gf_bs_read_int_log_idx ( bs , 1 , \"used_by_curr_pic_lt_sps_flag\" , i ) ; } } sps -> temporal_mvp_enable_flag = gf_bs_read_int_log ( bs , 1 , \"temporal_mvp_enable_flag\" ) ; sps -> strong_intra_smoothing_enable_flag = gf_bs_read_int_log ( bs , 1 , \"strong_intra_smoothing_enable_flag\" ) ; if ( vui_flag_pos ) * vui_flag_pos = ( u32 ) gf_bs_get_bit_offset ( bs ) ; if ( ( sps -> vui_parameters_present_flag = gf_bs_read_int_log ( bs , 1 , \"vui_parameters_present_flag\" ) ) ) { sps -> aspect_ratio_info_present_flag = gf_bs_read_int_log ( bs , 1 , \"aspect_ratio_info_present_flag\" ) ; if ( sps -> aspect_ratio_info_present_flag ) { sps -> sar_idc = gf_bs_read_int_log ( bs , 8 , \"aspect_ratio_idc\" ) ; if ( sps -> sar_idc == 255 ) { sps -> sar_width = gf_bs_read_int_log ( bs , 16 , \"aspect_ratio_width\" ) ; sps -> sar_height = gf_bs_read_int_log ( bs , 16 , \"aspect_ratio_height\" ) ; } else if ( sps -> sar_idc < 17 ) { sps -> sar_width = hevc_sar [ sps -> sar_idc ] . w ; sps -> sar_height = hevc_sar [ sps -> sar_idc ] . h ; } } if ( ( sps -> overscan_info_present = gf_bs_read_int_log ( bs , 1 , \"overscan_info_present\" ) ) ) sps -> overscan_appropriate = gf_bs_read_int_log ( bs , 1 , \"overscan_appropriate\" ) ; sps -> video_signal_type_present_flag = gf_bs_read_int_log ( bs , 1 , \"video_signal_type_present_flag\" ) ; if ( sps -> video_signal_type_present_flag ) { sps -> video_format = gf_bs_read_int_log ( bs , 3 , \"video_format\" ) ; sps -> video_full_range_flag = gf_bs_read_int_log ( bs , 1 , \"video_full_range_flag\" ) ; if ( ( sps -> colour_description_present_flag = gf_bs_read_int_log ( bs , 1 , \"colour_description_present_flag\" ) ) ) { sps -> colour_primaries = gf_bs_read_int_log ( bs , 8 , \"colour_primaries\" ) ; sps -> transfer_characteristic = gf_bs_read_int_log ( bs , 8 , \"transfer_characteristic\" ) ; sps -> matrix_coeffs = gf_bs_read_int_log ( bs , 8 , \"matrix_coefficients\" ) ; } } if ( ( sps -> chroma_loc_info_present_flag = gf_bs_read_int_log ( bs , 1 , \"chroma_loc_info_present_flag\" ) ) ) { sps -> chroma_sample_loc_type_top_field = gf_bs_read_ue_log ( bs , \"chroma_sample_loc_type_top_field\" ) ; sps -> chroma_sample_loc_type_bottom_field = gf_bs_read_ue_log ( bs , \"chroma_sample_loc_type_bottom_field\" ) ; } sps -> neutra_chroma_indication_flag = gf_bs_read_int_log ( bs , 1 , \"neutra_chroma_indication_flag\" ) ; sps -> field_seq_flag = gf_bs_read_int_log ( bs , 1 , \"field_seq_flag\" ) ; sps -> frame_field_info_present_flag = gf_bs_read_int_log ( bs , 1 , \"frame_field_info_present_flag\" ) ; if ( ( sps -> default_display_window_flag = gf_bs_read_int_log ( bs , 1 , \"default_display_window_flag\" ) ) ) { sps -> left_offset = gf_bs_read_ue_log ( bs , \"display_window_left_offset\" ) ; sps -> right_offset = gf_bs_read_ue_log ( bs , \"display_window_right_offset\" ) ; sps -> top_offset = gf_bs_read_ue_log ( bs , \"display_window_top_offset\" ) ; sps -> bottom_offset = gf_bs_read_ue_log ( bs , \"display_window_bottom_offset\" ) ; } sps -> has_timing_info = gf_bs_read_int_log ( bs , 1 , \"has_timing_info\" ) ; if ( sps -> has_timing_info ) { sps -> num_units_in_tick = gf_bs_read_int_log ( bs , 32 , \"num_units_in_tick\" ) ; sps -> time_scale = gf_bs_read_int_log ( bs , 32 , \"time_scale\" ) ; sps -> poc_proportional_to_timing_flag = gf_bs_read_int_log ( bs , 1 , \"poc_proportional_to_timing_flag\" ) ; if ( sps -> poc_proportional_to_timing_flag ) sps -> num_ticks_poc_diff_one_minus1 = gf_bs_read_ue_log ( bs , \"num_ticks_poc_diff_one_minus1\" ) ; if ( ( sps -> hrd_parameters_present_flag = gf_bs_read_int_log ( bs , 1 , \"hrd_parameters_present_flag\" ) ) ) { return sps_id ; } } if ( gf_bs_read_int_log ( bs , 1 , \"bitstream_restriction_flag\" ) ) { gf_bs_read_int_log ( bs , 1 , \"tiles_fixed_structure_flag\" ) ; gf_bs_read_int_log ( bs , 1 , \"motion_vectors_over_pic_boundaries_flag\" ) ; gf_bs_read_int_log ( bs , 1 , \"restricted_ref_pic_lists_flag\" ) ; gf_bs_read_ue_log ( bs , \"min_spatial_segmentation_idc\" ) ; gf_bs_read_ue_log ( bs , \"max_bytes_per_pic_denom\" ) ; gf_bs_read_ue_log ( bs , \"max_bits_per_min_cu_denom\" ) ; gf_bs_read_ue_log ( bs , \"log2_max_mv_length_horizontal\" ) ; gf_bs_read_ue_log ( bs , \"log2_max_mv_length_vertical\" ) ; } } if ( gf_bs_read_int_log ( bs , 1 , \"sps_extension_flag\" ) ) { # if 0 while ( gf_bs_available ( bs ) ) { gf_bs_read_int ( bs , 1 ) ; } # endif } return sps_id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( vps_id < 0 ) || ( <S2SV_ModStart> vps_id >= 16 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 static void veth_setup ( struct net_device * dev ) { <S2SV_StartBug> ether_setup ( dev ) ; <S2SV_EndBug> dev -> netdev_ops = & veth_netdev_ops ; dev -> ethtool_ops = & veth_ethtool_ops ; dev -> features |= NETIF_F_LLTX ; dev -> destructor = veth_dev_free ; dev -> hw_features = NETIF_F_NO_CSUM | NETIF_F_SG | NETIF_F_RXCSUM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( dev ) ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18270\n\n```\nCWE-000 <S2SV_StartBug> struct key * find_keyring_by_name ( const char * name , bool skip_perm_check ) <S2SV_EndBug> { struct key * keyring ; int bucket ; if ( ! name ) return ERR_PTR ( - EINVAL ) ; bucket = keyring_hash ( name ) ; read_lock ( & keyring_name_lock ) ; if ( keyring_name_hash [ bucket ] . next ) { list_for_each_entry ( keyring , & keyring_name_hash [ bucket ] , name_link ) { if ( ! kuid_has_mapping ( current_user_ns ( ) , keyring -> user -> uid ) ) continue ; if ( test_bit ( KEY_FLAG_REVOKED , & keyring -> flags ) ) continue ; if ( strcmp ( keyring -> description , name ) != 0 ) continue ; <S2SV_StartBug> if ( ! skip_perm_check && <S2SV_EndBug> key_permission ( make_key_ref ( keyring , 0 ) , KEY_NEED_SEARCH ) < 0 ) <S2SV_StartBug> continue ; <S2SV_EndBug> if ( ! refcount_inc_not_zero ( & keyring -> usage ) ) continue ; keyring -> last_used_at = current_kernel_time ( ) . tv_sec ; goto out ; } } keyring = ERR_PTR ( - ENOKEY ) ; out : read_unlock ( & keyring_name_lock ) ; return keyring ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> name , bool uid_keyring <S2SV_ModEnd> ) { struct <S2SV_ModStart> ; if ( uid_keyring ) { if ( ! test_bit ( KEY_FLAG_UID_KEYRING , & keyring -> flags ) ) continue ; } else { if ( <S2SV_ModEnd> key_permission ( make_key_ref <S2SV_ModStart> ) continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 static int nfs4_callback_svc ( void * vrqstp ) { int err ; struct svc_rqst * rqstp = vrqstp ; set_freezable ( ) ; <S2SV_StartBug> while ( ! kthread_should_stop ( ) ) { <S2SV_EndBug> err = svc_recv ( rqstp , MAX_SCHEDULE_TIMEOUT ) ; if ( err == - EAGAIN || err == - EINTR ) continue ; svc_process ( rqstp ) ; } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( ! kthread_freezable_should_stop ( NULL <S2SV_ModEnd> ) ) { <S2SV_ModStart> ) ) { if ( signal_pending ( current ) ) flush_signals ( current ) ; <S2SV_ModStart> ) ; } svc_exit_thread ( rqstp ) ; module_put_and_exit ( 0 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7125\n\n```\nCWE-74 PS_SERIALIZER_DECODE_FUNC ( php ) { const char * p , * q ; char * name ; const char * endptr = val + vallen ; zval * current ; int namelen ; int has_value ; php_unserialize_data_t var_hash ; <S2SV_StartBug> PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; <S2SV_EndBug> p = val ; while ( p < endptr ) { zval * * tmp ; <S2SV_StartBug> q = p ; <S2SV_EndBug> while ( * q != PS_DELIMITER ) { if ( ++ q >= endptr ) goto break_outer_loop ; } if ( p [ 0 ] == PS_UNDEF_MARKER ) { p ++ ; has_value = 0 ; } else { has_value = 1 ; } namelen = q - p ; name = estrndup ( p , namelen ) ; q ++ ; if ( zend_hash_find ( & EG ( symbol_table ) , name , namelen + 1 , ( void * * ) & tmp ) == SUCCESS ) { if ( ( Z_TYPE_PP ( tmp ) == IS_ARRAY && Z_ARRVAL_PP ( tmp ) == & EG ( symbol_table ) ) || * tmp == PS ( http_session_vars ) ) { <S2SV_StartBug> goto skip ; <S2SV_EndBug> } } if ( has_value ) { ALLOC_INIT_ZVAL ( current ) ; if ( php_var_unserialize ( & current , ( const unsigned char * * ) & q , ( const unsigned char * ) endptr , & var_hash TSRMLS_CC ) ) { <S2SV_StartBug> php_set_session_var ( name , namelen , current , & var_hash TSRMLS_CC ) ; <S2SV_EndBug> } else { var_push_dtor_no_addref ( & var_hash , & current ) ; efree ( name ) ; PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return FAILURE ; } var_push_dtor_no_addref ( & var_hash , & current ) ; } <S2SV_StartBug> PS_ADD_VARL ( name , namelen ) ; <S2SV_EndBug> skip : efree ( name ) ; p = q ; } break_outer_loop : PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> php_unserialize_data_t var_hash ; int skip = 0 ; <S2SV_ModStart> q = p ; skip = 0 <S2SV_ModStart> ) ) { skip = 1 <S2SV_ModEnd> ; } } <S2SV_ModStart> ) ) { if ( ! skip ) { <S2SV_ModStart> TSRMLS_CC ) ; } <S2SV_ModStart> ) ; } if ( ! skip ) { <S2SV_ModStart> namelen ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0871\n\n```\nCWE-362 static int ptrace_check_attach ( struct task_struct * child , bool ignore_state ) { int ret = - ESRCH ; read_lock ( & tasklist_lock ) ; <S2SV_StartBug> if ( ( child -> ptrace & PT_PTRACED ) && child -> parent == current ) { <S2SV_EndBug> <S2SV_StartBug> spin_lock_irq ( & child -> sighand -> siglock ) ; <S2SV_EndBug> WARN_ON_ONCE ( task_is_stopped ( child ) ) ; <S2SV_StartBug> if ( ignore_state || ( task_is_traced ( child ) && <S2SV_EndBug> ! ( child -> jobctl & JOBCTL_LISTENING ) ) ) <S2SV_StartBug> ret = 0 ; <S2SV_EndBug> spin_unlock_irq ( & child -> sighand -> siglock ) ; } read_unlock ( & tasklist_lock ) ; <S2SV_StartBug> if ( ! ret && ! ignore_state ) <S2SV_EndBug> <S2SV_StartBug> ret = wait_task_inactive ( child , TASK_TRACED ) ? 0 : - ESRCH ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> child -> ptrace <S2SV_ModStart> child -> ptrace <S2SV_ModEnd> && child -> <S2SV_ModStart> current ) { WARN_ON ( child -> state == __TASK_TRACED <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( ignore_state || ptrace_freeze_traced ( child <S2SV_ModEnd> ) ) ret <S2SV_ModStart> ret = 0 <S2SV_ModEnd> ; } read_unlock <S2SV_ModStart> ! ignore_state ) { if ( ! <S2SV_ModEnd> wait_task_inactive ( child <S2SV_ModStart> ( child , __TASK_TRACED ) ) { WARN_ON ( child -> state == __TASK_TRACED ) ; ret = <S2SV_ModEnd> - ESRCH ; <S2SV_ModStart> - ESRCH ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_get_display_size ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctrl_id , va_list args ) { <S2SV_EndBug> int * const display_size = va_arg ( args , int * ) ; <S2SV_StartBug> if ( display_size ) { <S2SV_EndBug> <S2SV_StartBug> if ( ctx -> pbi ) { <S2SV_EndBug> <S2SV_StartBug> const VP9_COMMON * const cm = & ctx -> pbi -> common ; <S2SV_EndBug> display_size [ 0 ] = cm -> display_width ; display_size [ 1 ] = cm -> display_height ; <S2SV_StartBug> } else { <S2SV_EndBug> return VPX_CODEC_ERROR ; } <S2SV_StartBug> return VPX_CODEC_OK ; <S2SV_EndBug> } else { return VPX_CODEC_INVALID_PARAM ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> ; if ( ctx -> frame_parallel_decode ) { set_error_detail ( ctx , \"Not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>frame<S2SV_blank>parallel<S2SV_blank>decode\" ) ; return VPX_CODEC_INCAPABLE ; } if ( <S2SV_ModStart> ( ctx -> frame_workers ) { VPxWorker * const worker = ctx -> frame_workers ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; <S2SV_ModEnd> const VP9_COMMON * <S2SV_ModStart> cm = & frame_worker_data <S2SV_ModEnd> -> pbi -> <S2SV_ModStart> -> display_height ; return VPX_CODEC_OK ; <S2SV_ModStart> VPX_CODEC_ERROR ; } } <S2SV_ModEnd> return VPX_CODEC_INVALID_PARAM ; <S2SV_ModStart> VPX_CODEC_INVALID_PARAM ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18344\n\n```\nCWE-125 void common_timer_get ( struct k_itimer * timr , struct itimerspec64 * cur_setting ) { const struct k_clock * kc = timr -> kclock ; ktime_t now , remaining , iv ; struct timespec64 ts64 ; bool sig_none ; <S2SV_StartBug> sig_none = ( timr -> it_sigev_notify & ~ SIGEV_THREAD_ID ) == SIGEV_NONE ; <S2SV_EndBug> iv = timr -> it_interval ; if ( iv ) { cur_setting -> it_interval = ktime_to_timespec64 ( iv ) ; } else if ( ! timr -> it_active ) { if ( ! sig_none ) return ; } kc -> clock_get ( timr -> it_clock , & ts64 ) ; now = timespec64_to_ktime ( ts64 ) ; if ( iv && ( timr -> it_requeue_pending & REQUEUE_PENDING || sig_none ) ) timr -> it_overrun += kc -> timer_forward ( timr , now ) ; remaining = kc -> timer_remaining ( timr , now ) ; if ( remaining <= 0 ) { if ( ! sig_none ) cur_setting -> it_value . tv_nsec = 1 ; } else { cur_setting -> it_value = ktime_to_timespec64 ( remaining ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sig_none = <S2SV_ModEnd> timr -> it_sigev_notify <S2SV_ModStart> timr -> it_sigev_notify <S2SV_ModEnd> == SIGEV_NONE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int tok_get ( struct tok_state * tok , char * * p_start , char * * p_end ) { int c ; int blankline , nonascii ; * p_start = * p_end = NULL ; nextline : tok -> start = NULL ; blankline = 0 ; if ( tok -> atbol ) { int col = 0 ; int altcol = 0 ; tok -> atbol = 0 ; for ( ; ; ) { c = tok_nextc ( tok ) ; if ( c == '<S2SV_blank>' ) { col ++ , altcol ++ ; } else if ( c == '\\\\t' ) { col = ( col / tok -> tabsize + 1 ) * tok -> tabsize ; <S2SV_StartBug> altcol = ( altcol / tok -> alttabsize + 1 ) <S2SV_EndBug> <S2SV_StartBug> * tok -> alttabsize ; <S2SV_EndBug> } else if ( c == '\\\\014' ) { col = altcol = 0 ; } else { break ; } } tok_backup ( tok , c ) ; if ( c == '#' || c == '\\\\n' ) { if ( col == 0 && c == '\\\\n' && tok -> prompt != NULL ) { blankline = 0 ; } else { blankline = 1 ; } } if ( ! blankline && tok -> level == 0 ) { if ( col == tok -> indstack [ tok -> indent ] ) { if ( altcol != tok -> altindstack [ tok -> indent ] ) { <S2SV_StartBug> if ( indenterror ( tok ) ) { <S2SV_EndBug> return ERRORTOKEN ; } } } else if ( col > tok -> indstack [ tok -> indent ] ) { if ( tok -> indent + 1 >= MAXINDENT ) { tok -> done = E_TOODEEP ; tok -> cur = tok -> inp ; return ERRORTOKEN ; } if ( altcol <= tok -> altindstack [ tok -> indent ] ) { <S2SV_StartBug> if ( indenterror ( tok ) ) { <S2SV_EndBug> return ERRORTOKEN ; } } tok -> pendin ++ ; tok -> indstack [ ++ tok -> indent ] = col ; tok -> altindstack [ tok -> indent ] = altcol ; } else { while ( tok -> indent > 0 && col < tok -> indstack [ tok -> indent ] ) { tok -> pendin -- ; tok -> indent -- ; } if ( col != tok -> indstack [ tok -> indent ] ) { tok -> done = E_DEDENT ; tok -> cur = tok -> inp ; return ERRORTOKEN ; } if ( altcol != tok -> altindstack [ tok -> indent ] ) { <S2SV_StartBug> if ( indenterror ( tok ) ) { <S2SV_EndBug> return ERRORTOKEN ; } } } } } tok -> start = tok -> cur ; if ( tok -> pendin != 0 ) { if ( tok -> pendin < 0 ) { tok -> pendin ++ ; return DEDENT ; } else { tok -> pendin -- ; return INDENT ; } } if ( tok -> async_def && ! blankline && tok -> level == 0 && tok -> async_def_nl && tok -> async_def_indent >= tok -> indent ) { tok -> async_def = 0 ; tok -> async_def_indent = 0 ; tok -> async_def_nl = 0 ; } again : tok -> start = NULL ; do { c = tok_nextc ( tok ) ; } while ( c == '<S2SV_blank>' || c == '\\\\t' || c == '\\\\014' ) ; tok -> start = tok -> cur - 1 ; if ( c == '#' ) { const char * prefix , * p , * type_start ; while ( c != EOF && c != '\\\\n' ) c = tok_nextc ( tok ) ; p = tok -> start ; prefix = type_comment_prefix ; while ( * prefix && p < tok -> cur ) { if ( * prefix == '<S2SV_blank>' ) { while ( * p == '<S2SV_blank>' || * p == '\\\\t' ) p ++ ; } else if ( * prefix == * p ) { p ++ ; } else { break ; } prefix ++ ; } if ( ! * prefix ) { int is_type_ignore = 1 ; tok_backup ( tok , c ) ; type_start = p ; is_type_ignore = tok -> cur >= p + 6 && memcmp ( p , \"ignore\" , 6 ) == 0 ; p += 6 ; while ( is_type_ignore && p < tok -> cur ) { if ( * p == '#' ) break ; is_type_ignore = is_type_ignore && ( * p == '<S2SV_blank>' || * p == '\\\\t' ) ; p ++ ; } if ( is_type_ignore ) { if ( blankline ) { tok_nextc ( tok ) ; tok -> atbol = 1 ; } return TYPE_IGNORE ; } else { * p_start = ( char * ) type_start ; * p_end = tok -> cur ; return TYPE_COMMENT ; } } } if ( c == EOF ) { return tok -> done == E_EOF ? ENDMARKER : ERRORTOKEN ; } nonascii = 0 ; if ( is_potential_identifier_start ( c ) ) { int saw_b = 0 , saw_r = 0 , saw_u = 0 , saw_f = 0 ; while ( 1 ) { if ( ! ( saw_b || saw_u || saw_f ) && ( c == 'b' || c == 'B' ) ) saw_b = 1 ; else if ( ! ( saw_b || saw_u || saw_r || saw_f ) && ( c == 'u' || c == 'U' ) ) { saw_u = 1 ; } else if ( ! ( saw_r || saw_u ) && ( c == 'r' || c == 'R' ) ) { saw_r = 1 ; } else if ( ! ( saw_f || saw_b || saw_u ) && ( c == 'f' || c == 'F' ) ) { saw_f = 1 ; } else { break ; } c = tok_nextc ( tok ) ; if ( c == \\'\"\\' || c == '\\\\'' ) { goto letter_quote ; } } while ( is_potential_identifier_char ( c ) ) { if ( c >= 128 ) { nonascii = 1 ; } c = tok_nextc ( tok ) ; } tok_backup ( tok , c ) ; if ( nonascii && ! verify_identifier ( tok ) ) { return ERRORTOKEN ; } * p_start = tok -> start ; * p_end = tok -> cur ; if ( tok -> cur - tok -> start == 5 ) { <S2SV_StartBug> if ( tok -> async_def ) { <S2SV_EndBug> if ( memcmp ( tok -> start , \"async\" , 5 ) == 0 ) { return ASYNC ; } if ( memcmp ( tok -> start , \"await\" , 5 ) == 0 ) { return AWAIT ; } } else if ( memcmp ( tok -> start , \"async\" , 5 ) == 0 ) { struct tok_state ahead_tok ; char * ahead_tok_start = NULL , * ahead_tok_end = NULL ; int ahead_tok_kind ; memcpy ( & ahead_tok , tok , sizeof ( ahead_tok ) ) ; ahead_tok_kind = tok_get ( & ahead_tok , & ahead_tok_start , & ahead_tok_end ) ; if ( ahead_tok_kind == NAME && ahead_tok . cur - ahead_tok . start == 3 && memcmp ( ahead_tok . start , \"def\" , 3 ) == 0 ) { tok -> async_def_indent = tok -> indent ; tok -> async_def = 1 ; return ASYNC ; } } } return NAME ; } if ( c == '\\\\n' ) { tok -> atbol = 1 ; if ( blankline || tok -> level > 0 ) { goto nextline ; } * p_start = tok -> start ; * p_end = tok -> cur - 1 ; tok -> cont_line = 0 ; if ( tok -> async_def ) { tok -> async_def_nl = 1 ; } return NEWLINE ; } if ( c == '.' ) { c = tok_nextc ( tok ) ; if ( isdigit ( c ) ) { goto fraction ; } else if ( c == '.' ) { c = tok_nextc ( tok ) ; if ( c == '.' ) { * p_start = tok -> start ; * p_end = tok -> cur ; return ELLIPSIS ; } else { tok_backup ( tok , c ) ; } tok_backup ( tok , '.' ) ; } else { tok_backup ( tok , c ) ; } * p_start = tok -> start ; * p_end = tok -> cur ; return DOT ; } if ( isdigit ( c ) ) { if ( c == '0' ) { c = tok_nextc ( tok ) ; if ( c == 'x' || c == 'X' ) { c = tok_nextc ( tok ) ; do { if ( c == '_' ) { c = tok_nextc ( tok ) ; } if ( ! isxdigit ( c ) ) { tok -> done = E_TOKEN ; tok_backup ( tok , c ) ; return ERRORTOKEN ; } do { c = tok_nextc ( tok ) ; } while ( isxdigit ( c ) ) ; } while ( c == '_' ) ; } else if ( c == 'o' || c == 'O' ) { c = tok_nextc ( tok ) ; do { if ( c == '_' ) { c = tok_nextc ( tok ) ; } if ( c < '0' || c >= '8' ) { tok -> done = E_TOKEN ; tok_backup ( tok , c ) ; return ERRORTOKEN ; } do { c = tok_nextc ( tok ) ; } while ( '0' <= c && c < '8' ) ; } while ( c == '_' ) ; } else if ( c == 'b' || c == 'B' ) { c = tok_nextc ( tok ) ; do { if ( c == '_' ) { c = tok_nextc ( tok ) ; } if ( c != '0' && c != '1' ) { tok -> done = E_TOKEN ; tok_backup ( tok , c ) ; return ERRORTOKEN ; } do { c = tok_nextc ( tok ) ; } while ( c == '0' || c == '1' ) ; } while ( c == '_' ) ; } else { int nonzero = 0 ; while ( 1 ) { if ( c == '_' ) { c = tok_nextc ( tok ) ; if ( ! isdigit ( c ) ) { tok -> done = E_TOKEN ; tok_backup ( tok , c ) ; return ERRORTOKEN ; } } if ( c != '0' ) { break ; } c = tok_nextc ( tok ) ; } if ( isdigit ( c ) ) { nonzero = 1 ; c = tok_decimal_tail ( tok ) ; if ( c == 0 ) { return ERRORTOKEN ; } } if ( c == '.' ) { c = tok_nextc ( tok ) ; goto fraction ; } else if ( c == 'e' || c == 'E' ) { goto exponent ; } else if ( c == 'j' || c == 'J' ) { goto imaginary ; } else if ( nonzero ) { tok -> done = E_TOKEN ; tok_backup ( tok , c ) ; return ERRORTOKEN ; } } } else { c = tok_decimal_tail ( tok ) ; if ( c == 0 ) { return ERRORTOKEN ; } { if ( c == '.' ) { c = tok_nextc ( tok ) ; fraction : if ( isdigit ( c ) ) { c = tok_decimal_tail ( tok ) ; if ( c == 0 ) { return ERRORTOKEN ; } } } if ( c == 'e' || c == 'E' ) { int e ; exponent : e = c ; c = tok_nextc ( tok ) ; if ( c == '+' || c == '-' ) { c = tok_nextc ( tok ) ; if ( ! isdigit ( c ) ) { tok -> done = E_TOKEN ; tok_backup ( tok , c ) ; return ERRORTOKEN ; } } else if ( ! isdigit ( c ) ) { tok_backup ( tok , c ) ; tok_backup ( tok , e ) ; * p_start = tok -> start ; * p_end = tok -> cur ; return NUMBER ; } c = tok_decimal_tail ( tok ) ; if ( c == 0 ) { return ERRORTOKEN ; } } if ( c == 'j' || c == 'J' ) { imaginary : c = tok_nextc ( tok ) ; } } } tok_backup ( tok , c ) ; * p_start = tok -> start ; * p_end = tok -> cur ; return NUMBER ; } letter_quote : if ( c == '\\\\'' || c == \\'\"\\' ) { int quote = c ; int quote_size = 1 ; int end_quote_size = 0 ; c = tok_nextc ( tok ) ; if ( c == quote ) { c = tok_nextc ( tok ) ; if ( c == quote ) { quote_size = 3 ; } else { end_quote_size = 1 ; } } if ( c != quote ) { tok_backup ( tok , c ) ; } while ( end_quote_size != quote_size ) { c = tok_nextc ( tok ) ; if ( c == EOF ) { if ( quote_size == 3 ) { tok -> done = E_EOFS ; } else { tok -> done = E_EOLS ; } tok -> cur = tok -> inp ; return ERRORTOKEN ; } if ( quote_size == 1 && c == '\\\\n' ) { tok -> done = E_EOLS ; tok -> cur = tok -> inp ; return ERRORTOKEN ; } if ( c == quote ) { end_quote_size += 1 ; } else { end_quote_size = 0 ; if ( c == '\\\\\\\\' ) { tok_nextc ( tok ) ; } } } * p_start = tok -> start ; * p_end = tok -> cur ; return STRING ; } if ( c == '\\\\\\\\' ) { c = tok_nextc ( tok ) ; if ( c != '\\\\n' ) { tok -> done = E_LINECONT ; tok -> cur = tok -> inp ; return ERRORTOKEN ; } tok -> cont_line = 1 ; goto again ; } { int c2 = tok_nextc ( tok ) ; int token = Ta3Token_TwoChars ( c , c2 ) ; if ( token != OP ) { int c3 = tok_nextc ( tok ) ; int token3 = Ta3Token_ThreeChars ( c , c2 , c3 ) ; if ( token3 != OP ) { token = token3 ; } else { tok_backup ( tok , c3 ) ; } * p_start = tok -> start ; * p_end = tok -> cur ; return token ; } tok_backup ( tok , c2 ) ; } switch ( c ) { case '(' : case '[' : case '{' : tok -> level ++ ; break ; case ')' : case ']' : case '}' : tok -> level -- ; break ; } * p_start = tok -> start ; * p_end = tok -> cur ; return Ta3Token_OneChar ( c ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( altcol / ALTTABSIZE <S2SV_ModEnd> + 1 ) <S2SV_ModStart> + 1 ) * ALTTABSIZE <S2SV_ModEnd> ; } else <S2SV_ModStart> ] ) { return <S2SV_ModEnd> indenterror ( tok <S2SV_ModStart> ( tok ) ; <S2SV_ModEnd> } } else <S2SV_ModStart> ] ) { return <S2SV_ModEnd> indenterror ( tok <S2SV_ModStart> ( tok ) ; <S2SV_ModEnd> } tok -> <S2SV_ModStart> ] ) { return <S2SV_ModEnd> indenterror ( tok <S2SV_ModStart> ( tok ) ; <S2SV_ModEnd> } } } <S2SV_ModStart> { if ( tok -> async_always ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9949\n\n```\nCWE-787 static int grub_ext2_iterate_dir ( grub_fshelp_node_t dir , int ( * hook ) ( const char * filename , enum grub_fshelp_filetype filetype , grub_fshelp_node_t node , void * closure ) , void * closure ) { unsigned int fpos = 0 ; struct grub_fshelp_node * diro = ( struct grub_fshelp_node * ) dir ; if ( ! diro -> inode_read ) { grub_ext2_read_inode ( diro -> data , diro -> ino , & diro -> inode ) ; if ( grub_errno ) return 0 ; } if ( hook ) while ( fpos < grub_le_to_cpu32 ( diro -> inode . size ) ) { struct ext2_dirent dirent ; grub_ext2_read_file ( diro , NULL , NULL , 0 , fpos , sizeof ( dirent ) , ( char * ) & dirent ) ; if ( grub_errno ) return 0 ; if ( dirent . direntlen == 0 ) return 0 ; if ( dirent . namelen != 0 ) { <S2SV_StartBug> # ifndef _MSC_VER <S2SV_EndBug> <S2SV_StartBug> char filename [ dirent . namelen + 1 ] ; <S2SV_EndBug> # else char * filename = grub_malloc ( dirent . namelen + 1 ) ; # endif struct grub_fshelp_node * fdiro ; <S2SV_StartBug> enum grub_fshelp_filetype type = GRUB_FSHELP_UNKNOWN ; <S2SV_EndBug> grub_ext2_read_file ( diro , 0 , 0 , 0 , fpos + sizeof ( struct ext2_dirent ) , dirent . namelen , filename ) ; if ( grub_errno ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> fdiro = grub_malloc ( sizeof ( struct grub_fshelp_node ) ) ; if ( ! fdiro ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> fdiro -> data = diro -> data ; fdiro -> ino = grub_le_to_cpu32 ( dirent . inode ) ; filename [ dirent . namelen ] = '\\\\0' ; if ( dirent . filetype != FILETYPE_UNKNOWN ) { fdiro -> inode_read = 0 ; if ( dirent . filetype == FILETYPE_DIRECTORY ) type = GRUB_FSHELP_DIR ; else if ( dirent . filetype == FILETYPE_SYMLINK ) type = GRUB_FSHELP_SYMLINK ; else if ( dirent . filetype == FILETYPE_REG ) type = GRUB_FSHELP_REG ; } else { grub_ext2_read_inode ( diro -> data , grub_le_to_cpu32 ( dirent . inode ) , & fdiro -> inode ) ; if ( grub_errno ) <S2SV_StartBug> { <S2SV_EndBug> grub_free ( fdiro ) ; return 0 ; } fdiro -> inode_read = 1 ; if ( ( grub_le_to_cpu16 ( fdiro -> inode . mode ) & FILETYPE_INO_MASK ) == FILETYPE_INO_DIRECTORY ) type = GRUB_FSHELP_DIR ; else if ( ( grub_le_to_cpu16 ( fdiro -> inode . mode ) & FILETYPE_INO_MASK ) == FILETYPE_INO_SYMLINK ) type = GRUB_FSHELP_SYMLINK ; else if ( ( grub_le_to_cpu16 ( fdiro -> inode . mode ) & FILETYPE_INO_MASK ) == FILETYPE_INO_REG ) type = GRUB_FSHELP_REG ; } <S2SV_StartBug> if ( hook ( filename , type , fdiro , closure ) ) <S2SV_EndBug> return 1 ; } fpos += grub_le_to_cpu16 ( dirent . direntlen ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { char * filename = grub_malloc ( <S2SV_ModEnd> dirent . namelen <S2SV_ModStart> namelen + 1 ) ; <S2SV_ModEnd> struct grub_fshelp_node * <S2SV_ModStart> = GRUB_FSHELP_UNKNOWN ; if ( ! filename ) { break ; } <S2SV_ModStart> ( grub_errno ) { free ( filename ) ; return 0 ; } <S2SV_ModEnd> fdiro = grub_malloc <S2SV_ModStart> ! fdiro ) { free ( filename ) ; return 0 ; } <S2SV_ModEnd> fdiro -> data <S2SV_ModStart> ( grub_errno ) { free ( filename ) ; <S2SV_ModEnd> grub_free ( fdiro <S2SV_ModStart> closure ) ) { free ( filename ) ; return 1 ; } free ( filename ) <S2SV_ModEnd> ; } fpos\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3905\n\n```\nCWE-119 void process_pfa ( FILE * ifp , const char * ifp_filename , struct font_reader * fr ) { char buffer [ LINESIZE ] ; int c = 0 ; int blocktyp = PFA_ASCII ; char saved_orphan = 0 ; ( void ) ifp_filename ; while ( c != EOF ) { char * line = buffer , * last = buffer ; int crlf = 0 ; c = getc ( ifp ) ; while ( c != EOF && c != '\\\\r' && c != '\\\\n' && last < buffer + LINESIZE - 1 ) { * last ++ = c ; c = getc ( ifp ) ; } if ( last == buffer + LINESIZE - 1 ) ungetc ( c , ifp ) ; else if ( c == '\\\\r' && blocktyp != PFA_BINARY ) { c = getc ( ifp ) ; if ( c != '\\\\n' ) ungetc ( c , ifp ) , crlf = 1 ; else crlf = 2 ; * last ++ = '\\\\n' ; } else if ( c != EOF ) * last ++ = c ; * last = 0 ; if ( blocktyp == PFA_ASCII ) { <S2SV_StartBug> if ( strncmp ( line , \"currentfile<S2SV_blank>eexec\" , 17 ) == 0 && isspace ( line [ 17 ] ) ) { <S2SV_EndBug> char saved_p ; <S2SV_StartBug> for ( line += 18 ; isspace ( * line ) ; line ++ ) <S2SV_EndBug> ; saved_p = * line ; * line = 0 ; fr -> output_ascii ( buffer , line - buffer ) ; * line = saved_p ; blocktyp = PFA_EEXEC_TEST ; if ( ! * line ) continue ; } else { fr -> output_ascii ( line , last - line ) ; continue ; } } if ( blocktyp == PFA_EEXEC_TEST ) { <S2SV_StartBug> for ( ; line < last && isspace ( * line ) ; line ++ ) <S2SV_EndBug> ; if ( line == last ) continue ; <S2SV_StartBug> else if ( last >= line + 4 && isxdigit ( line [ 0 ] ) && isxdigit ( line [ 1 ] ) <S2SV_EndBug> <S2SV_StartBug> && isxdigit ( line [ 2 ] ) && isxdigit ( line [ 3 ] ) ) <S2SV_EndBug> blocktyp = PFA_HEX ; else blocktyp = PFA_BINARY ; memmove ( buffer , line , last - line + 1 ) ; last = buffer + ( last - line ) ; line = buffer ; if ( blocktyp == PFA_BINARY && crlf ) { last [ - 1 ] = '\\\\r' ; if ( crlf == 2 ) * last ++ = '\\\\n' ; } } if ( all_zeroes ( line ) ) { fr -> output_ascii ( line , last - line ) ; blocktyp = PFA_ASCII ; } else if ( blocktyp == PFA_HEX ) { int len = translate_hex_string ( line , & saved_orphan ) ; if ( len ) fr -> output_binary ( ( unsigned char * ) line , len ) ; } else fr -> output_binary ( ( unsigned char * ) line , last - line ) ; } fr -> output_end ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && isspace ( ( unsigned char ) <S2SV_ModStart> ; isspace ( ( unsigned char ) <S2SV_ModStart> && isspace ( ( unsigned char ) <S2SV_ModStart> && isxdigit ( ( unsigned char ) <S2SV_ModStart> && isxdigit ( ( unsigned char ) <S2SV_ModStart> && isxdigit ( ( unsigned char ) <S2SV_ModStart> && isxdigit ( ( unsigned char )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9242\n\n```\nCWE-20 static int __ip6_append_data ( struct sock * sk , struct flowi6 * fl6 , struct sk_buff_head * queue , struct inet_cork * cork , struct inet6_cork * v6_cork , struct page_frag * pfrag , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int transhdrlen , unsigned int flags , struct ipcm6_cookie * ipc6 , const struct sockcm_cookie * sockc ) { struct sk_buff * skb , * skb_prev = NULL ; unsigned int maxfraglen , fragheaderlen , mtu , orig_mtu ; int exthdrlen = 0 ; int dst_exthdrlen = 0 ; int hh_len ; int copy ; int err ; int offset = 0 ; __u8 tx_flags = 0 ; u32 tskey = 0 ; struct rt6_info * rt = ( struct rt6_info * ) cork -> dst ; struct ipv6_txoptions * opt = v6_cork -> opt ; int csummode = CHECKSUM_NONE ; unsigned int maxnonfragsize , headersize ; skb = skb_peek_tail ( queue ) ; if ( ! skb ) { exthdrlen = opt ? opt -> opt_flen : 0 ; dst_exthdrlen = rt -> dst . header_len - rt -> rt6i_nfheader_len ; } mtu = cork -> fragsize ; orig_mtu = mtu ; hh_len = LL_RESERVED_SPACE ( rt -> dst . dev ) ; fragheaderlen = sizeof ( struct ipv6hdr ) + rt -> rt6i_nfheader_len + ( opt ? opt -> opt_nflen : 0 ) ; maxfraglen = ( ( mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; headersize = sizeof ( struct ipv6hdr ) + ( opt ? opt -> opt_flen + opt -> opt_nflen : 0 ) + ( dst_allfrag ( & rt -> dst ) ? sizeof ( struct frag_hdr ) : 0 ) + rt -> rt6i_nfheader_len ; if ( cork -> length + length > mtu - headersize && ipc6 -> dontfrag && ( sk -> sk_protocol == IPPROTO_UDP || sk -> sk_protocol == IPPROTO_RAW ) ) { ipv6_local_rxpmtu ( sk , fl6 , mtu - headersize + sizeof ( struct ipv6hdr ) ) ; goto emsgsize ; } if ( ip6_sk_ignore_df ( sk ) ) maxnonfragsize = sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN ; else maxnonfragsize = mtu ; if ( cork -> length + length > maxnonfragsize - headersize ) { emsgsize : ipv6_local_error ( sk , EMSGSIZE , fl6 , mtu - headersize + sizeof ( struct ipv6hdr ) ) ; return - EMSGSIZE ; } if ( transhdrlen && sk -> sk_protocol == IPPROTO_UDP && headersize == sizeof ( struct ipv6hdr ) && length <= mtu - headersize && ! ( flags & MSG_MORE ) && rt -> dst . dev -> features & ( NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM ) ) csummode = CHECKSUM_PARTIAL ; if ( sk -> sk_type == SOCK_DGRAM || sk -> sk_type == SOCK_RAW ) { sock_tx_timestamp ( sk , sockc -> tsflags , & tx_flags ) ; if ( tx_flags & SKBTX_ANY_SW_TSTAMP && sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_ID ) tskey = sk -> sk_tskey ++ ; } cork -> length += length ; if ( ( ( ( length + fragheaderlen ) > mtu ) || ( skb && skb_is_gso ( skb ) ) ) && ( sk -> sk_protocol == IPPROTO_UDP ) && ( rt -> dst . dev -> features & NETIF_F_UFO ) && ! dst_xfrm ( & rt -> dst ) && ( sk -> sk_type == SOCK_DGRAM ) && ! udp_get_no_check6_tx ( sk ) ) { err = ip6_ufo_append_data ( sk , queue , getfrag , from , length , hh_len , fragheaderlen , exthdrlen , transhdrlen , mtu , flags , fl6 ) ; if ( err ) goto error ; return 0 ; } if ( ! skb ) goto alloc_new_skb ; while ( length > 0 ) { copy = ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - skb -> len ; if ( copy < length ) copy = maxfraglen - skb -> len ; if ( copy <= 0 ) { char * data ; unsigned int datalen ; unsigned int fraglen ; unsigned int fraggap ; unsigned int alloclen ; alloc_new_skb : if ( skb ) fraggap = skb -> len - maxfraglen ; else fraggap = 0 ; if ( ! skb || ! skb_prev ) ip6_append_data_mtu ( & mtu , & maxfraglen , fragheaderlen , skb , rt , orig_mtu ) ; skb_prev = skb ; datalen = length + fraggap ; if ( datalen > ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - fragheaderlen ) datalen = maxfraglen - fragheaderlen - rt -> dst . trailer_len ; if ( ( flags & MSG_MORE ) && ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) alloclen = mtu ; else alloclen = datalen + fragheaderlen ; alloclen += dst_exthdrlen ; if ( datalen != length + fraggap ) { datalen += rt -> dst . trailer_len ; } alloclen += rt -> dst . trailer_len ; fraglen = datalen + fragheaderlen ; alloclen += sizeof ( struct frag_hdr ) ; <S2SV_StartBug> if ( transhdrlen ) { <S2SV_EndBug> skb = sock_alloc_send_skb ( sk , alloclen + hh_len , ( flags & MSG_DONTWAIT ) , & err ) ; } else { skb = NULL ; if ( atomic_read ( & sk -> sk_wmem_alloc ) <= 2 * sk -> sk_sndbuf ) skb = sock_wmalloc ( sk , alloclen + hh_len , 1 , sk -> sk_allocation ) ; if ( unlikely ( ! skb ) ) err = - ENOBUFS ; } if ( ! skb ) goto error ; skb -> protocol = htons ( ETH_P_IPV6 ) ; skb -> ip_summed = csummode ; skb -> csum = 0 ; skb_reserve ( skb , hh_len + sizeof ( struct frag_hdr ) + dst_exthdrlen ) ; skb_shinfo ( skb ) -> tx_flags = tx_flags ; tx_flags = 0 ; skb_shinfo ( skb ) -> tskey = tskey ; tskey = 0 ; data = skb_put ( skb , fraglen ) ; skb_set_network_header ( skb , exthdrlen ) ; data += fragheaderlen ; skb -> transport_header = ( skb -> network_header + fragheaderlen ) ; if ( fraggap ) { skb -> csum = skb_copy_and_csum_bits ( skb_prev , maxfraglen , data + transhdrlen , fraggap , 0 ) ; skb_prev -> csum = csum_sub ( skb_prev -> csum , skb -> csum ) ; data += fraggap ; pskb_trim_unique ( skb_prev , maxfraglen ) ; } <S2SV_StartBug> copy = datalen - transhdrlen - fraggap ; <S2SV_EndBug> if ( copy < 0 ) { err = - EINVAL ; kfree_skb ( skb ) ; goto error ; } else if ( copy > 0 && getfrag ( from , data + transhdrlen , offset , copy , fraggap , skb ) < 0 ) { err = - EFAULT ; kfree_skb ( skb ) ; goto error ; } offset += copy ; length -= datalen - fraggap ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; if ( ( flags & MSG_CONFIRM ) && ! skb_prev ) skb_set_dst_pending_confirm ( skb , 1 ) ; __skb_queue_tail ( queue , skb ) ; continue ; } if ( copy > length ) copy = length ; if ( ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) { unsigned int off ; off = skb -> len ; if ( getfrag ( from , skb_put ( skb , copy ) , offset , copy , off , skb ) < 0 ) { __skb_trim ( skb , off ) ; err = - EFAULT ; goto error ; } } else { int i = skb_shinfo ( skb ) -> nr_frags ; err = - ENOMEM ; if ( ! sk_page_frag_refill ( sk , pfrag ) ) goto error ; if ( ! skb_can_coalesce ( skb , i , pfrag -> page , pfrag -> offset ) ) { err = - EMSGSIZE ; if ( i == MAX_SKB_FRAGS ) goto error ; __skb_fill_page_desc ( skb , i , pfrag -> page , pfrag -> offset , 0 ) ; skb_shinfo ( skb ) -> nr_frags = ++ i ; get_page ( pfrag -> page ) ; } copy = min_t ( int , copy , pfrag -> size - pfrag -> offset ) ; if ( getfrag ( from , page_address ( pfrag -> page ) + pfrag -> offset , offset , copy , skb -> len , skb ) < 0 ) goto error_efault ; pfrag -> offset += copy ; skb_frag_size_add ( & skb_shinfo ( skb ) -> frags [ i - 1 ] , copy ) ; skb -> len += copy ; skb -> data_len += copy ; skb -> truesize += copy ; atomic_add ( copy , & sk -> sk_wmem_alloc ) ; } offset += copy ; length -= copy ; } return 0 ; error_efault : err = - EFAULT ; error : cork -> length -= length ; IP6_INC_STATS ( sock_net ( sk ) , rt -> rt6i_idev , IPSTATS_MIB_OUTDISCARDS ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> frag_hdr ) ; copy = datalen - transhdrlen - fraggap ; if ( copy < 0 ) { err = - EINVAL ; goto error ; } <S2SV_ModStart> ) ; } if ( copy > 0 && getfrag ( from , data + transhdrlen <S2SV_ModEnd> , offset ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17582\n\n```\nCWE-416 zip_int64_t _zip_dirent_read ( zip_dirent_t * zde , zip_source_t * src , zip_buffer_t * buffer , bool local , zip_error_t * error ) { zip_uint8_t buf [ CDENTRYSIZE ] ; zip_uint16_t dostime , dosdate ; zip_uint32_t size , variable_size ; zip_uint16_t filename_len , comment_len , ef_len ; bool from_buffer = ( buffer != NULL ) ; size = local ? LENTRYSIZE : CDENTRYSIZE ; if ( buffer ) { if ( _zip_buffer_left ( buffer ) < size ) { zip_error_set ( error , ZIP_ER_NOZIP , 0 ) ; return - 1 ; } } else { if ( ( buffer = _zip_buffer_new_from_source ( src , size , buf , error ) ) == NULL ) { return - 1 ; } } if ( memcmp ( _zip_buffer_get ( buffer , 4 ) , ( local ? LOCAL_MAGIC : CENTRAL_MAGIC ) , 4 ) != 0 ) { zip_error_set ( error , ZIP_ER_NOZIP , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } _zip_dirent_init ( zde ) ; if ( ! local ) zde -> version_madeby = _zip_buffer_get_16 ( buffer ) ; else zde -> version_madeby = 0 ; zde -> version_needed = _zip_buffer_get_16 ( buffer ) ; zde -> bitflags = _zip_buffer_get_16 ( buffer ) ; zde -> comp_method = _zip_buffer_get_16 ( buffer ) ; dostime = _zip_buffer_get_16 ( buffer ) ; dosdate = _zip_buffer_get_16 ( buffer ) ; zde -> last_mod = _zip_d2u_time ( dostime , dosdate ) ; zde -> crc = _zip_buffer_get_32 ( buffer ) ; zde -> comp_size = _zip_buffer_get_32 ( buffer ) ; zde -> uncomp_size = _zip_buffer_get_32 ( buffer ) ; filename_len = _zip_buffer_get_16 ( buffer ) ; ef_len = _zip_buffer_get_16 ( buffer ) ; if ( local ) { comment_len = 0 ; zde -> disk_number = 0 ; zde -> int_attrib = 0 ; zde -> ext_attrib = 0 ; zde -> offset = 0 ; } else { comment_len = _zip_buffer_get_16 ( buffer ) ; zde -> disk_number = _zip_buffer_get_16 ( buffer ) ; zde -> int_attrib = _zip_buffer_get_16 ( buffer ) ; zde -> ext_attrib = _zip_buffer_get_32 ( buffer ) ; zde -> offset = _zip_buffer_get_32 ( buffer ) ; } if ( ! _zip_buffer_ok ( buffer ) ) { zip_error_set ( error , ZIP_ER_INTERNAL , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( zde -> bitflags & ZIP_GPBF_ENCRYPTED ) { if ( zde -> bitflags & ZIP_GPBF_STRONG_ENCRYPTION ) { zde -> encryption_method = ZIP_EM_UNKNOWN ; } else { zde -> encryption_method = ZIP_EM_TRAD_PKWARE ; } } else { zde -> encryption_method = ZIP_EM_NONE ; } zde -> filename = NULL ; zde -> extra_fields = NULL ; zde -> comment = NULL ; variable_size = ( zip_uint32_t ) filename_len + ( zip_uint32_t ) ef_len + ( zip_uint32_t ) comment_len ; if ( from_buffer ) { if ( _zip_buffer_left ( buffer ) < variable_size ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; return - 1 ; } } else { _zip_buffer_free ( buffer ) ; if ( ( buffer = _zip_buffer_new_from_source ( src , variable_size , NULL , error ) ) == NULL ) { return - 1 ; } } if ( filename_len ) { zde -> filename = _zip_read_string ( buffer , src , filename_len , 1 , error ) ; if ( ! zde -> filename ) { if ( zip_error_code_zip ( error ) == ZIP_ER_EOF ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; } if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( zde -> bitflags & ZIP_GPBF_ENCODING_UTF_8 ) { if ( _zip_guess_encoding ( zde -> filename , ZIP_ENCODING_UTF8_KNOWN ) == ZIP_ENCODING_ERROR ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } } } if ( ef_len ) { zip_uint8_t * ef = _zip_read_data ( buffer , src , ef_len , 0 , error ) ; if ( ef == NULL ) { if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( ! _zip_ef_parse ( ef , ef_len , local ? ZIP_EF_LOCAL : ZIP_EF_CENTRAL , & zde -> extra_fields , error ) ) { free ( ef ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } free ( ef ) ; if ( local ) zde -> local_extra_fields_read = 1 ; } if ( comment_len ) { zde -> comment = _zip_read_string ( buffer , src , comment_len , 0 , error ) ; if ( ! zde -> comment ) { if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( zde -> bitflags & ZIP_GPBF_ENCODING_UTF_8 ) { if ( _zip_guess_encoding ( zde -> comment , ZIP_ENCODING_UTF8_KNOWN ) == ZIP_ENCODING_ERROR ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } } } zde -> filename = _zip_dirent_process_ef_utf_8 ( zde , ZIP_EF_UTF_8_NAME , zde -> filename ) ; zde -> comment = _zip_dirent_process_ef_utf_8 ( zde , ZIP_EF_UTF_8_COMMENT , zde -> comment ) ; if ( zde -> uncomp_size == ZIP_UINT32_MAX || zde -> comp_size == ZIP_UINT32_MAX || zde -> offset == ZIP_UINT32_MAX ) { zip_uint16_t got_len ; zip_buffer_t * ef_buffer ; const zip_uint8_t * ef = _zip_ef_get_by_id ( zde -> extra_fields , & got_len , ZIP_EF_ZIP64 , 0 , local ? ZIP_EF_LOCAL : ZIP_EF_CENTRAL , error ) ; if ( ef == NULL ) { if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( ( ef_buffer = _zip_buffer_new ( ( zip_uint8_t * ) ef , got_len ) ) == NULL ) { zip_error_set ( error , ZIP_ER_MEMORY , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( zde -> uncomp_size == ZIP_UINT32_MAX ) zde -> uncomp_size = _zip_buffer_get_64 ( ef_buffer ) ; else if ( local ) { ( void ) _zip_buffer_skip ( ef_buffer , 8 ) ; } if ( zde -> comp_size == ZIP_UINT32_MAX ) zde -> comp_size = _zip_buffer_get_64 ( ef_buffer ) ; if ( ! local ) { if ( zde -> offset == ZIP_UINT32_MAX ) zde -> offset = _zip_buffer_get_64 ( ef_buffer ) ; if ( zde -> disk_number == ZIP_UINT16_MAX ) zde -> disk_number = _zip_buffer_get_32 ( buffer ) ; } if ( ! _zip_buffer_eof ( ef_buffer ) ) { zip_error_set ( error , ZIP_ER_INCONS , 0 ) ; _zip_buffer_free ( ef_buffer ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } _zip_buffer_free ( ef_buffer ) ; } if ( ! _zip_buffer_ok ( buffer ) ) { zip_error_set ( error , ZIP_ER_INTERNAL , 0 ) ; if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } return - 1 ; } if ( ! from_buffer ) { _zip_buffer_free ( buffer ) ; } if ( zde -> offset > ZIP_INT64_MAX ) { zip_error_set ( error , ZIP_ER_SEEK , EFBIG ) ; return - 1 ; } if ( ! _zip_dirent_process_winzip_aes ( zde , error ) ) { <S2SV_StartBug> if ( ! from_buffer ) { <S2SV_EndBug> _zip_buffer_free ( buffer ) ; } return - 1 ; } zde -> extra_fields = _zip_ef_remove_internal ( zde -> extra_fields ) ; return ( zip_int64_t ) ( size + variable_size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { <S2SV_ModEnd> return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int sanitize_ptr_alu ( struct bpf_verifier_env * env , struct bpf_insn * insn , const struct bpf_reg_state * ptr_reg , struct bpf_reg_state * dst_reg , bool off_is_neg ) { struct bpf_verifier_state * vstate = env -> cur_state ; struct bpf_insn_aux_data * aux = cur_aux ( env ) ; bool ptr_is_dst_reg = ptr_reg == dst_reg ; u8 opcode = BPF_OP ( insn -> code ) ; u32 alu_state , alu_limit ; struct bpf_reg_state tmp ; bool ret ; <S2SV_StartBug> if ( env -> allow_ptr_leaks || BPF_SRC ( insn -> code ) == BPF_K ) <S2SV_EndBug> return 0 ; if ( vstate -> speculative ) goto do_sim ; alu_state = off_is_neg ? BPF_ALU_NEG_VALUE : 0 ; alu_state |= ptr_is_dst_reg ? BPF_ALU_SANITIZE_SRC : BPF_ALU_SANITIZE_DST ; if ( retrieve_ptr_limit ( ptr_reg , & alu_limit , opcode , off_is_neg ) ) return 0 ; <S2SV_StartBug> if ( aux -> alu_state && <S2SV_EndBug> ( aux -> alu_state != alu_state || aux -> alu_limit != alu_limit ) ) <S2SV_StartBug> return - EACCES ; <S2SV_EndBug> aux -> alu_state = alu_state ; aux -> alu_limit = alu_limit ; do_sim : if ( ! ptr_is_dst_reg ) { tmp = * dst_reg ; * dst_reg = * ptr_reg ; } ret = push_stack ( env , env -> insn_idx + 1 , env -> insn_idx , true ) ; if ( ! ptr_is_dst_reg ) * dst_reg = tmp ; return ! ret ? - EFAULT : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( can_skip_alu_sanitation ( env , insn ) <S2SV_ModEnd> ) return 0 <S2SV_ModStart> ; if ( update_alu_sanitation_state ( aux , alu_state , <S2SV_ModEnd> alu_limit ) ) <S2SV_ModStart> return - EACCES <S2SV_ModEnd> ; do_sim :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12997\n\n```\nCWE-835 static int lldp_private_8021_print ( netdissect_options * ndo , const u_char * tptr , u_int tlv_len ) { int subtype , hexdump = FALSE ; u_int sublen ; u_int tval ; <S2SV_StartBug> uint8_t i ; <S2SV_EndBug> if ( tlv_len < 4 ) { return hexdump ; } subtype = * ( tptr + 3 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Subtype<S2SV_blank>(%u)\" , tok2str ( lldp_8021_subtype_values , \"unknown\" , subtype ) , subtype ) ) ; switch ( subtype ) { case LLDP_PRIVATE_8021_SUBTYPE_PORT_VLAN_ID : if ( tlv_len < 6 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>port<S2SV_blank>vlan<S2SV_blank>id<S2SV_blank>(PVID):<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_VLAN_ID : if ( tlv_len < 7 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>port<S2SV_blank>and<S2SV_blank>protocol<S2SV_blank>vlan<S2SV_blank>id<S2SV_blank>(PPVID):<S2SV_blank>%u,<S2SV_blank>flags<S2SV_blank>[%s]<S2SV_blank>(0x%02x)\" , EXTRACT_16BITS ( tptr + 5 ) , bittok2str ( lldp_8021_port_protocol_id_values , \"none\" , * ( tptr + 4 ) ) , * ( tptr + 4 ) ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_VLAN_NAME : if ( tlv_len < 6 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>vlan<S2SV_blank>id<S2SV_blank>(VID):<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 4 ) ) ) ; if ( tlv_len < 7 ) { return hexdump ; } sublen = * ( tptr + 6 ) ; if ( tlv_len < 7 + sublen ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>vlan<S2SV_blank>name:<S2SV_blank>\" ) ) ; safeputs ( ndo , tptr + 7 , sublen ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_PROTOCOL_IDENTITY : if ( tlv_len < 5 ) { return hexdump ; } sublen = * ( tptr + 4 ) ; if ( tlv_len < 5 + sublen ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>protocol<S2SV_blank>identity:<S2SV_blank>\" ) ) ; safeputs ( ndo , tptr + 5 , sublen ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_CONGESTION_NOTIFICATION_LENGTH ) { return hexdump ; } tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Pre-Priority<S2SV_blank>CNPV<S2SV_blank>Indicator\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority<S2SV_blank>:<S2SV_blank>0<S2SV_blank><S2SV_blank>1<S2SV_blank><S2SV_blank>2<S2SV_blank><S2SV_blank>3<S2SV_blank><S2SV_blank>4<S2SV_blank><S2SV_blank>5<S2SV_blank><S2SV_blank>6<S2SV_blank><S2SV_blank>7\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Value<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>\" ) ) ; for ( i = 0 ; i < NO_OF_BITS ; i ++ ) ND_PRINT ( ( ndo , \"%-2d<S2SV_blank>\" , ( tval >> i ) & 0x01 ) ) ; tval = * ( tptr + 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Pre-Priority<S2SV_blank>Ready<S2SV_blank>Indicator\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority<S2SV_blank>:<S2SV_blank>0<S2SV_blank><S2SV_blank>1<S2SV_blank><S2SV_blank>2<S2SV_blank><S2SV_blank>3<S2SV_blank><S2SV_blank>4<S2SV_blank><S2SV_blank>5<S2SV_blank><S2SV_blank>6<S2SV_blank><S2SV_blank>7\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Value<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>\" ) ) ; for ( i = 0 ; i < NO_OF_BITS ; i ++ ) ND_PRINT ( ( ndo , \"%-2d<S2SV_blank>\" , ( tval >> i ) & 0x01 ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_ETS_CONFIGURATION_LENGTH ) { return hexdump ; } tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Willing:%d,<S2SV_blank>CBS:%d,<S2SV_blank>RES:%d,<S2SV_blank>Max<S2SV_blank>TCs:%d\" , tval >> 7 , ( tval >> 6 ) & 0x02 , ( tval >> 3 ) & 0x07 , tval & 0x07 ) ) ; print_ets_priority_assignment_table ( ndo , tptr + 5 ) ; print_tc_bandwidth_table ( ndo , tptr + 9 ) ; print_tsa_assignment_table ( ndo , tptr + 17 ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_ETS_RECOMMENDATION_LENGTH ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d\" , * ( tptr + 4 ) ) ) ; print_ets_priority_assignment_table ( ndo , tptr + 5 ) ; print_tc_bandwidth_table ( ndo , tptr + 9 ) ; print_tsa_assignment_table ( ndo , tptr + 17 ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_PFC_CONFIGURATION_LENGTH ) { return hexdump ; } tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Willing:<S2SV_blank>%d,<S2SV_blank>MBC:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>PFC<S2SV_blank>cap:%d<S2SV_blank>\" , tval >> 7 , ( tval >> 6 ) & 0x01 , ( tval >> 4 ) & 0x03 , ( tval & 0x0f ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>PFC<S2SV_blank>Enable\" ) ) ; tval = * ( tptr + 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority<S2SV_blank>:<S2SV_blank>0<S2SV_blank><S2SV_blank>1<S2SV_blank><S2SV_blank>2<S2SV_blank><S2SV_blank>3<S2SV_blank><S2SV_blank>4<S2SV_blank><S2SV_blank>5<S2SV_blank><S2SV_blank>6<S2SV_blank><S2SV_blank>7\" ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Value<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>\" ) ) ; for ( i = 0 ; i < NO_OF_BITS ; i ++ ) ND_PRINT ( ( ndo , \"%-2d<S2SV_blank>\" , ( tval >> i ) & 0x01 ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY_MIN_LENGTH ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d\" , * ( tptr + 4 ) ) ) ; if ( tlv_len <= LLDP_PRIVATE_8021_SUBTYPE_APPLICATION_PRIORITY_MIN_LENGTH ) { return hexdump ; } sublen = tlv_len - 5 ; if ( sublen % 3 != 0 ) { return hexdump ; } i = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Application<S2SV_blank>Priority<S2SV_blank>Table\" ) ) ; while ( i < sublen ) { tval = * ( tptr + i + 5 ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>Sel:<S2SV_blank>%d\" , <S2SV_EndBug> <S2SV_StartBug> tval >> 5 , ( tval >> 3 ) & 0x03 , ( tval & 0x07 ) ) ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"Protocol<S2SV_blank>ID:<S2SV_blank>%d\" , EXTRACT_16BITS ( tptr + i + 5 ) ) ) ; i = i + 3 ; } break ; case LLDP_PRIVATE_8021_SUBTYPE_EVB : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_EVB_LENGTH ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>EVB<S2SV_blank>Bridge<S2SV_blank>Status\" ) ) ; tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>BGID:<S2SV_blank>%d,<S2SV_blank>RRCAP:<S2SV_blank>%d,<S2SV_blank>RRCTR:<S2SV_blank>%d\" , tval >> 3 , ( tval >> 2 ) & 0x01 , ( tval >> 1 ) & 0x01 , tval & 0x01 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>EVB<S2SV_blank>Station<S2SV_blank>Status\" ) ) ; tval = * ( tptr + 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>SGID:<S2SV_blank>%d,<S2SV_blank>RRREQ:<S2SV_blank>%d,RRSTAT:<S2SV_blank>%d\" , tval >> 4 , ( tval >> 3 ) & 0x01 , ( tval >> 2 ) & 0x01 , tval & 0x03 ) ) ; tval = * ( tptr + 6 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>R:<S2SV_blank>%d,<S2SV_blank>RTE:<S2SV_blank>%d,<S2SV_blank>\" , tval >> 5 , tval & 0x1f ) ) ; tval = * ( tptr + 7 ) ; ND_PRINT ( ( ndo , \"EVB<S2SV_blank>Mode:<S2SV_blank>%s<S2SV_blank>[%d]\" , tok2str ( lldp_evb_mode_values , \"unknown\" , tval >> 6 ) , tval >> 6 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ROL:<S2SV_blank>%d,<S2SV_blank>RWD:<S2SV_blank>%d,<S2SV_blank>\" , ( tval >> 5 ) & 0x01 , tval & 0x1f ) ) ; tval = * ( tptr + 8 ) ; ND_PRINT ( ( ndo , \"RES:<S2SV_blank>%d,<S2SV_blank>ROL:<S2SV_blank>%d,<S2SV_blank>RKA:<S2SV_blank>%d\" , tval >> 6 , ( tval >> 5 ) & 0x01 , tval & 0x1f ) ) ; break ; case LLDP_PRIVATE_8021_SUBTYPE_CDCP : if ( tlv_len < LLDP_PRIVATE_8021_SUBTYPE_CDCP_MIN_LENGTH ) { return hexdump ; } tval = * ( tptr + 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Role:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>Scomp:<S2SV_blank>%d<S2SV_blank>\" , tval >> 7 , ( tval >> 4 ) & 0x07 , ( tval >> 3 ) & 0x01 ) ) ; ND_PRINT ( ( ndo , \"ChnCap:<S2SV_blank>%d\" , EXTRACT_16BITS ( tptr + 6 ) & 0x0fff ) ) ; sublen = tlv_len - 8 ; if ( sublen % 3 != 0 ) { return hexdump ; } i = 0 ; while ( i < sublen ) { tval = EXTRACT_24BITS ( tptr + i + 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SCID:<S2SV_blank>%d,<S2SV_blank>SVID:<S2SV_blank>%d\" , tval >> 12 , tval & 0x000fff ) ) ; i = i + 3 ; } break ; default : hexdump = TRUE ; break ; } return hexdump ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_int tval ; u_int <S2SV_ModEnd> i ; if <S2SV_ModStart> ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>RES:<S2SV_blank>%u,<S2SV_blank>Sel:<S2SV_blank>%u,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%u\" <S2SV_ModEnd> , tval >> <S2SV_ModStart> & 0x07 ) , <S2SV_ModEnd> EXTRACT_16BITS ( tptr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3233\n\n```\nCWE-200 static int llcp_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; unsigned int copied , rlen ; struct sk_buff * skb , * cskb ; int err = 0 ; <S2SV_StartBug> pr_debug ( \"%p<S2SV_blank>%zu\\\\n\" , sk , len ) ; <S2SV_EndBug> lock_sock ( sk ) ; if ( sk -> sk_state == LLCP_CLOSED && skb_queue_empty ( & sk -> sk_receive_queue ) ) { release_sock ( sk ) ; return 0 ; } release_sock ( sk ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) { pr_err ( \"Recv<S2SV_blank>datagram<S2SV_blank>failed<S2SV_blank>state<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d\" , sk -> sk_state , err , sock_error ( sk ) ) ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } rlen = skb -> len ; copied = min_t ( unsigned int , rlen , len ) ; cskb = skb ; if ( skb_copy_datagram_iovec ( cskb , 0 , msg -> msg_iov , copied ) ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - EFAULT ; } sock_recv_timestamp ( msg , sk , skb ) ; if ( sk -> sk_type == SOCK_DGRAM && msg -> msg_name ) { struct nfc_llcp_ui_cb * ui_cb = nfc_llcp_ui_skb_cb ( skb ) ; struct sockaddr_nfc_llcp * sockaddr = ( struct sockaddr_nfc_llcp * ) msg -> msg_name ; msg -> msg_namelen = sizeof ( struct sockaddr_nfc_llcp ) ; pr_debug ( \"Datagram<S2SV_blank>socket<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , ui_cb -> dsap , ui_cb -> ssap ) ; <S2SV_StartBug> sockaddr -> sa_family = AF_NFC ; <S2SV_EndBug> sockaddr -> nfc_protocol = NFC_PROTO_NFC_DEP ; sockaddr -> dsap = ui_cb -> dsap ; sockaddr -> ssap = ui_cb -> ssap ; } if ( ! ( flags & MSG_PEEK ) ) { if ( sk -> sk_type == SOCK_STREAM || sk -> sk_type == SOCK_DGRAM || sk -> sk_type == SOCK_RAW ) { skb_pull ( skb , copied ) ; if ( skb -> len ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; goto done ; } } kfree_skb ( skb ) ; } done : if ( sk -> sk_type == SOCK_SEQPACKET && ( flags & MSG_TRUNC ) ) copied = rlen ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , len ) ; msg -> msg_namelen = 0 <S2SV_ModStart> ssap ) ; memset ( sockaddr , 0 , sizeof ( * sockaddr ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4312\n\n```\nCWE-119 void unix_notinflight ( struct file * fp ) { struct sock * s = unix_get_socket ( fp ) ; <S2SV_StartBug> if ( s ) { <S2SV_EndBug> <S2SV_StartBug> struct unix_sock * u = unix_sk ( s ) ; <S2SV_EndBug> spin_lock ( & unix_gc_lock ) ; BUG_ON ( list_empty ( & u -> link ) ) ; if ( atomic_long_dec_and_test ( & u -> inflight ) ) list_del_init ( & u -> link ) ; unix_tot_inflight -- ; <S2SV_StartBug> spin_unlock ( & unix_gc_lock ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fp ) ; spin_lock ( & unix_gc_lock ) ; <S2SV_ModStart> unix_sk ( s <S2SV_ModEnd> ) ; BUG_ON <S2SV_ModStart> unix_tot_inflight -- ; } fp -> f_cred -> user -> unix_inflight -- ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8693\n\n```\nCWE-415 static int mem_resize ( jas_stream_memobj_t * m , int bufsize ) { <S2SV_StartBug> unsigned char * buf ; <S2SV_EndBug> assert ( m -> buf_ ) ; assert ( bufsize >= 0 ) ; <S2SV_StartBug> if ( ! ( buf = jas_realloc2 ( m -> buf_ , bufsize , sizeof ( unsigned char ) ) ) ) { <S2SV_EndBug> return - 1 ; } m -> buf_ = buf ; m -> bufsize_ = bufsize ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * buf <S2SV_ModEnd> ; assert ( <S2SV_ModStart> ) ) ) && bufsize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_arguments ( void * _o ) { arguments_ty o = ( arguments_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } result = PyType_GenericNew ( arguments_type , NULL , NULL ) ; if ( ! result ) return NULL ; value = ast2obj_list ( o -> args , ast2obj_arg ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_args , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_arg ( o -> vararg ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_vararg , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> kwonlyargs , ast2obj_arg ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_kwonlyargs , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> kw_defaults , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_kw_defaults , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_arg ( o -> kwarg ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_kwarg , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> defaults , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_defaults , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } result\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8884\n\n```\nCWE-476 jas_matrix_t * jas_matrix_create ( int numrows , int numcols ) { jas_matrix_t * matrix ; int i ; <S2SV_StartBug> if ( ! ( matrix = jas_malloc ( sizeof ( jas_matrix_t ) ) ) ) { <S2SV_EndBug> return 0 ; } matrix -> flags_ = 0 ; matrix -> numrows_ = numrows ; matrix -> numcols_ = numcols ; matrix -> rows_ = 0 ; matrix -> maxrows_ = numrows ; matrix -> data_ = 0 ; matrix -> datasize_ = numrows * numcols ; if ( matrix -> maxrows_ > 0 ) { if ( ! ( matrix -> rows_ = jas_alloc2 ( matrix -> maxrows_ , sizeof ( jas_seqent_t * ) ) ) ) { jas_matrix_destroy ( matrix ) ; return 0 ; } } if ( matrix -> datasize_ > 0 ) { if ( ! ( matrix -> data_ = jas_alloc2 ( matrix -> datasize_ , sizeof ( jas_seqent_t ) ) ) ) { jas_matrix_destroy ( matrix ) ; return 0 ; } } for ( i = 0 ; i < numrows ; ++ i ) { matrix -> rows_ [ i ] = & matrix -> data_ [ i * matrix -> numcols_ ] ; } for ( i = 0 ; i < matrix -> datasize_ ; ++ i ) { matrix -> data_ [ i ] = 0 ; } matrix -> xstart_ = 0 ; matrix -> ystart_ = 0 ; matrix -> xend_ = matrix -> numcols_ ; matrix -> yend_ = matrix -> numrows_ ; return matrix ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( numrows < 0 || numcols < 0 ) { return 0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_block_size ( VP9_COMP * const cpi , <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> int mi_row , int mi_col , BLOCK_SIZE bsize ) { if ( cpi -> common . mi_cols > mi_col && cpi -> common . mi_rows > mi_row ) { <S2SV_StartBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> <S2SV_StartBug> set_modeinfo_offsets ( & cpi -> common , xd , mi_row , mi_col ) ; <S2SV_EndBug> xd -> mi [ 0 ] -> mbmi . sb_type = bsize ; <S2SV_StartBug> duplicate_mode_info_in_sb ( & cpi -> common , xd , mi_row , mi_col , bsize ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const cpi , MACROBLOCK * const x , MACROBLOCKD * const xd <S2SV_ModEnd> , int mi_row <S2SV_ModStart> mi_row ) { set_mode_info_offsets <S2SV_ModEnd> ( & cpi <S2SV_ModStart> cpi -> common , x <S2SV_ModStart> = bsize ; <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4502\n\n```\nCWE-119 static bool parse_reconnect ( struct pool * pool , json_t * val ) { char * sockaddr_url , * stratum_port , * tmp ; char * url , * port , address [ 256 ] ; memset ( address , 0 , 255 ) ; url = ( char * ) json_string_value ( json_array_get ( val , 0 ) ) ; if ( ! url ) url = pool -> sockaddr_url ; else { char * dot_pool , * dot_reconnect ; dot_pool = strchr ( pool -> sockaddr_url , '.' ) ; if ( ! dot_pool ) { applog ( LOG_ERR , \"Denied<S2SV_blank>stratum<S2SV_blank>reconnect<S2SV_blank>request<S2SV_blank>for<S2SV_blank>pool<S2SV_blank>without<S2SV_blank>domain<S2SV_blank>\\'%s\\'\" , pool -> sockaddr_url ) ; return false ; } dot_reconnect = strchr ( url , '.' ) ; if ( ! dot_reconnect ) { applog ( LOG_ERR , \"Denied<S2SV_blank>stratum<S2SV_blank>reconnect<S2SV_blank>request<S2SV_blank>to<S2SV_blank>url<S2SV_blank>without<S2SV_blank>domain<S2SV_blank>\\'%s\\'\" , url ) ; return false ; } if ( strcmp ( dot_pool , dot_reconnect ) ) { applog ( LOG_ERR , \"Denied<S2SV_blank>stratum<S2SV_blank>reconnect<S2SV_blank>request<S2SV_blank>to<S2SV_blank>non-matching<S2SV_blank>domain<S2SV_blank>url<S2SV_blank>\\'%s\\'\" , pool -> sockaddr_url ) ; return false ; } } port = ( char * ) json_string_value ( json_array_get ( val , 1 ) ) ; if ( ! port ) port = pool -> stratum_port ; <S2SV_StartBug> sprintf ( address , \"%s:%s\" , url , port ) ; <S2SV_EndBug> if ( ! extract_sockaddr ( address , & sockaddr_url , & stratum_port ) ) return false ; applog ( LOG_WARNING , \"Stratum<S2SV_blank>reconnect<S2SV_blank>requested<S2SV_blank>from<S2SV_blank>pool<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%s\" , pool -> pool_no , address ) ; clear_pool_work ( pool ) ; mutex_lock ( & pool -> stratum_lock ) ; __suspend_stratum ( pool ) ; tmp = pool -> sockaddr_url ; pool -> sockaddr_url = sockaddr_url ; pool -> stratum_url = pool -> sockaddr_url ; free ( tmp ) ; tmp = pool -> stratum_port ; pool -> stratum_port = stratum_port ; free ( tmp ) ; mutex_unlock ( & pool -> stratum_lock ) ; if ( ! restart_stratum ( pool ) ) { pool_failed ( pool ) ; return false ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> stratum_port ; snprintf ( address , 254 <S2SV_ModEnd> , \"%s:%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void parse_global_config ( struct VpxEncoderConfig * global , char * * argv ) { char * * argi , * * argj ; struct arg arg ; <S2SV_StartBug> memset ( global , 0 , sizeof ( * global ) ) ; <S2SV_EndBug> <S2SV_StartBug> global -> codec = get_vpx_encoder_by_index ( 0 ) ; <S2SV_EndBug> global -> passes = 0 ; global -> use_i420 = 1 ; global -> deadline = VPX_DL_GOOD_QUALITY ; for ( argi = argj = argv ; ( * argj = * argi ) ; argi += arg . argv_step ) { arg . argv_step = 1 ; if ( arg_match ( & arg , & codecarg , argi ) ) { global -> codec = get_vpx_encoder_by_name ( arg . val ) ; if ( ! global -> codec ) die ( \"Error:<S2SV_blank>Unrecognized<S2SV_blank>argument<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>--codec\\\\n\" , arg . val ) ; } else if ( arg_match ( & arg , & passes , argi ) ) { global -> passes = arg_parse_uint ( & arg ) ; if ( global -> passes < 1 || global -> passes > 2 ) die ( \"Error:<S2SV_blank>Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>passes<S2SV_blank>(%d)\\\\n\" , global -> passes ) ; } else if ( arg_match ( & arg , & pass_arg , argi ) ) { global -> pass = arg_parse_uint ( & arg ) ; if ( global -> pass < 1 || global -> pass > 2 ) die ( \"Error:<S2SV_blank>Invalid<S2SV_blank>pass<S2SV_blank>selected<S2SV_blank>(%d)\\\\n\" , global -> pass ) ; } else if ( arg_match ( & arg , & usage , argi ) ) global -> usage = arg_parse_uint ( & arg ) ; else if ( arg_match ( & arg , & deadline , argi ) ) global -> deadline = arg_parse_uint ( & arg ) ; else if ( arg_match ( & arg , & best_dl , argi ) ) global -> deadline = VPX_DL_BEST_QUALITY ; else if ( arg_match ( & arg , & good_dl , argi ) ) global -> deadline = VPX_DL_GOOD_QUALITY ; else if ( arg_match ( & arg , & rt_dl , argi ) ) global -> deadline = VPX_DL_REALTIME ; else if ( arg_match ( & arg , & use_yv12 , argi ) ) <S2SV_StartBug> global -> use_i420 = 0 ; <S2SV_EndBug> else if ( arg_match ( & arg , & use_i420 , argi ) ) global -> use_i420 = 1 ; else if ( arg_match ( & arg , & quietarg , argi ) ) global -> quiet = 1 ; else if ( arg_match ( & arg , & verbosearg , argi ) ) global -> verbose = 1 ; else if ( arg_match ( & arg , & limit , argi ) ) global -> limit = arg_parse_uint ( & arg ) ; else if ( arg_match ( & arg , & skip , argi ) ) global -> skip_frames = arg_parse_uint ( & arg ) ; else if ( arg_match ( & arg , & psnrarg , argi ) ) global -> show_psnr = 1 ; else if ( arg_match ( & arg , & recontest , argi ) ) global -> test_decode = arg_parse_enum_or_int ( & arg ) ; else if ( arg_match ( & arg , & framerate , argi ) ) { global -> framerate = arg_parse_rational ( & arg ) ; validate_positive_rational ( arg . name , & global -> framerate ) ; global -> have_framerate = 1 ; } else if ( arg_match ( & arg , & out_part , argi ) ) global -> out_part = 1 ; else if ( arg_match ( & arg , & debugmode , argi ) ) global -> debug = 1 ; else if ( arg_match ( & arg , & q_hist_n , argi ) ) global -> show_q_hist_buckets = arg_parse_uint ( & arg ) ; else if ( arg_match ( & arg , & rate_hist_n , argi ) ) global -> show_rate_hist_buckets = arg_parse_uint ( & arg ) ; else if ( arg_match ( & arg , & disable_warnings , argi ) ) global -> disable_warnings = 1 ; else if ( arg_match ( & arg , & disable_warning_prompt , argi ) ) global -> disable_warning_prompt = 1 ; <S2SV_StartBug> else if ( arg_match ( & arg , & experimental_bitstream , argi ) ) <S2SV_EndBug> global -> experimental_bitstream = 1 ; else argj ++ ; } if ( global -> pass ) { if ( global -> pass > global -> passes ) { warn ( \"Assuming<S2SV_blank>--pass=%d<S2SV_blank>implies<S2SV_blank>--passes=%d\\\\n\" , global -> pass , global -> pass ) ; global -> passes = global -> pass ; } } if ( global -> passes == 0 ) { <S2SV_StartBug> # if CONFIG_VP9_ENCODER <S2SV_EndBug> global -> passes = ( strcmp ( global -> codec -> name , \"vp9\" ) == 0 && global -> deadline != VPX_DL_REALTIME ) ? 2 : 1 ; # else global -> passes = 1 ; # endif } if ( global -> deadline == VPX_DL_REALTIME && global -> passes > 1 ) { warn ( \"Enforcing<S2SV_blank>one-pass<S2SV_blank>encoding<S2SV_blank>in<S2SV_blank>realtime<S2SV_blank>mode\\\\n\" ) ; global -> passes = 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg arg ; const int num_encoder = get_vpx_encoder_count ( ) ; if ( num_encoder < 1 ) die ( \"Error:<S2SV_blank>no<S2SV_blank>valid<S2SV_blank>encoder<S2SV_blank>available\\\\n\" ) ; <S2SV_ModStart> = get_vpx_encoder_by_index ( num_encoder - 1 ) ; global -> passes = 0 ; global -> color_type = I420 <S2SV_ModEnd> ; global -> <S2SV_ModStart> ) global -> color_type = YV12 ; else if ( arg_match ( & arg , & use_i420 , argi ) ) global -> color_type = I420 ; else if ( arg_match ( & arg , & use_i422 , argi ) ) global -> color_type = I422 ; else if ( arg_match ( & arg , & use_i444 , argi ) ) global -> color_type = I444 ; else if ( arg_match ( & arg , & use_i440 , argi ) ) global -> color_type = I440 <S2SV_ModEnd> ; else if <S2SV_ModStart> 1 ; else <S2SV_ModEnd> argj ++ ; <S2SV_ModStart> # if CONFIG_VP9_ENCODER || CONFIG_VP10_ENCODER if ( global -> codec != NULL && global -> codec -> name != NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3235\n\n```\nCWE-200 static int recv_stream ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t buf_len , int flags ) { struct sock * sk = sock -> sk ; struct tipc_port * tport = tipc_sk_port ( sk ) ; struct sk_buff * buf ; struct tipc_msg * msg ; long timeout ; unsigned int sz ; int sz_to_copy , target , needed ; int sz_copied = 0 ; u32 err ; int res = 0 ; if ( unlikely ( ! buf_len ) ) return - EINVAL ; lock_sock ( sk ) ; if ( unlikely ( ( sock -> state == SS_UNCONNECTED ) || ( sock -> state == SS_CONNECTING ) ) ) { res = - ENOTCONN ; goto exit ; <S2SV_StartBug> } <S2SV_EndBug> target = sock_rcvlowat ( sk , flags & MSG_WAITALL , buf_len ) ; timeout = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; restart : while ( skb_queue_empty ( & sk -> sk_receive_queue ) ) { if ( sock -> state == SS_DISCONNECTING ) { res = - ENOTCONN ; goto exit ; } if ( timeout <= 0L ) { res = timeout ? timeout : - EWOULDBLOCK ; goto exit ; } release_sock ( sk ) ; timeout = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , tipc_rx_ready ( sock ) , timeout ) ; lock_sock ( sk ) ; } buf = skb_peek ( & sk -> sk_receive_queue ) ; msg = buf_msg ( buf ) ; sz = msg_data_sz ( msg ) ; err = msg_errcode ( msg ) ; if ( ( ! sz ) && ( ! err ) ) { advance_rx_queue ( sk ) ; goto restart ; } if ( sz_copied == 0 ) { set_orig_addr ( m , msg ) ; res = anc_data_recv ( m , msg , tport ) ; if ( res ) goto exit ; } if ( ! err ) { u32 offset = ( u32 ) ( unsigned long ) ( TIPC_SKB_CB ( buf ) -> handle ) ; sz -= offset ; needed = ( buf_len - sz_copied ) ; sz_to_copy = ( sz <= needed ) ? sz : needed ; res = skb_copy_datagram_iovec ( buf , msg_hdr_sz ( msg ) + offset , m -> msg_iov , sz_to_copy ) ; if ( res ) goto exit ; sz_copied += sz_to_copy ; if ( sz_to_copy < sz ) { if ( ! ( flags & MSG_PEEK ) ) TIPC_SKB_CB ( buf ) -> handle = ( void * ) ( unsigned long ) ( offset + sz_to_copy ) ; goto exit ; } } else { if ( sz_copied != 0 ) goto exit ; if ( ( err == TIPC_CONN_SHUTDOWN ) || m -> msg_control ) res = 0 ; else res = - ECONNRESET ; } if ( likely ( ! ( flags & MSG_PEEK ) ) ) { if ( unlikely ( ++ tport -> conn_unacked >= TIPC_FLOW_CONTROL_WIN ) ) tipc_acknowledge ( tport -> ref , tport -> conn_unacked ) ; advance_rx_queue ( sk ) ; } if ( ( sz_copied < buf_len ) && ( ! skb_queue_empty ( & sk -> sk_receive_queue ) || ( sz_copied < target ) ) && ( ! ( flags & MSG_PEEK ) ) && ( ! err ) ) goto restart ; exit : release_sock ( sk ) ; return sz_copied ? sz_copied : res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exit ; } m -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static struct page * follow_page_pte ( struct vm_area_struct * vma , unsigned long address , pmd_t * pmd , unsigned int flags , struct dev_pagemap * * pgmap ) { struct mm_struct * mm = vma -> vm_mm ; struct page * page ; spinlock_t * ptl ; pte_t * ptep , pte ; retry : if ( unlikely ( pmd_bad ( * pmd ) ) ) return no_page_table ( vma , flags ) ; ptep = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; pte = * ptep ; if ( ! pte_present ( pte ) ) { swp_entry_t entry ; if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) goto no_page ; if ( pte_none ( pte ) ) goto no_page ; entry = pte_to_swp_entry ( pte ) ; if ( ! is_migration_entry ( entry ) ) goto no_page ; pte_unmap_unlock ( ptep , ptl ) ; migration_entry_wait ( mm , pmd , address ) ; goto retry ; } if ( ( flags & FOLL_NUMA ) && pte_protnone ( pte ) ) goto no_page ; if ( ( flags & FOLL_WRITE ) && ! can_follow_write_pte ( pte , flags ) ) { pte_unmap_unlock ( ptep , ptl ) ; return NULL ; } page = vm_normal_page ( vma , address , pte ) ; if ( ! page && pte_devmap ( pte ) && ( flags & FOLL_GET ) ) { * pgmap = get_dev_pagemap ( pte_pfn ( pte ) , * pgmap ) ; if ( * pgmap ) page = pte_page ( pte ) ; else goto no_page ; } else if ( unlikely ( ! page ) ) { if ( flags & FOLL_DUMP ) { page = ERR_PTR ( - EFAULT ) ; goto out ; } if ( is_zero_pfn ( pte_pfn ( pte ) ) ) { page = pte_page ( pte ) ; } else { int ret ; ret = follow_pfn_pte ( vma , address , ptep , flags ) ; page = ERR_PTR ( ret ) ; goto out ; } } if ( flags & FOLL_SPLIT && PageTransCompound ( page ) ) { int ret ; get_page ( page ) ; pte_unmap_unlock ( ptep , ptl ) ; lock_page ( page ) ; ret = split_huge_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; if ( ret ) return ERR_PTR ( ret ) ; goto retry ; } if ( flags & FOLL_GET ) <S2SV_StartBug> get_page ( page ) ; <S2SV_EndBug> if ( flags & FOLL_TOUCH ) { if ( ( flags & FOLL_WRITE ) && ! pte_dirty ( pte ) && ! PageDirty ( page ) ) set_page_dirty ( page ) ; mark_page_accessed ( page ) ; } if ( ( flags & FOLL_MLOCK ) && ( vma -> vm_flags & VM_LOCKED ) ) { if ( PageTransCompound ( page ) ) goto out ; if ( page -> mapping && trylock_page ( page ) ) { lru_add_drain ( ) ; mlock_vma_page ( page ) ; unlock_page ( page ) ; } } out : pte_unmap_unlock ( ptep , ptl ) ; return page ; no_page : pte_unmap_unlock ( ptep , ptl ) ; if ( ! pte_none ( pte ) ) return NULL ; return no_page_table ( vma , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & FOLL_GET ) { if ( unlikely ( ! try_get_page ( page ) ) ) { page = ERR_PTR ( - ENOMEM ) ; goto out ; } } <S2SV_ModEnd> if ( flags\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7396\n\n```\nCWE-401 static Image * ReadSIXELImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char * sixel_buffer ; Image * image ; MagickBooleanType status ; register char * p ; register ssize_t x ; register Quantum * q ; size_t length ; ssize_t i , j , y ; unsigned char * sixel_pixels , * sixel_palette ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = MagickPathExtent ; sixel_buffer = ( char * ) AcquireQuantumMemory ( ( size_t ) length + MagickPathExtent , sizeof ( * sixel_buffer ) ) ; p = sixel_buffer ; if ( sixel_buffer != ( char * ) NULL ) while ( ReadBlobString ( image , p ) != ( char * ) NULL ) { if ( ( * p == '#' ) && ( ( p == sixel_buffer ) || ( * ( p - 1 ) == '\\\\n' ) ) ) continue ; if ( ( * p == '}' ) && ( * ( p + 1 ) == ';' ) ) break ; p += strlen ( p ) ; if ( ( size_t ) ( p - sixel_buffer + MagickPathExtent + 1 ) < length ) continue ; length <<= 1 ; sixel_buffer = ( char * ) ResizeQuantumMemory ( sixel_buffer , length + MagickPathExtent + 1 , sizeof ( * sixel_buffer ) ) ; if ( sixel_buffer == ( char * ) NULL ) break ; p = sixel_buffer + strlen ( sixel_buffer ) ; } if ( sixel_buffer == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; sixel_buffer [ length ] = '\\\\0' ; if ( sixel_decode ( image , ( unsigned char * ) sixel_buffer , & sixel_pixels , & image -> columns , & image -> rows , & sixel_palette , & image -> colors , exception ) == MagickFalse ) { <S2SV_StartBug> sixel_buffer = ( char * ) RelinquishMagickMemory ( sixel_buffer ) ; <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } sixel_buffer = ( char * ) RelinquishMagickMemory ( sixel_buffer ) ; image -> depth = 24 ; image -> storage_class = PseudoClass ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) { sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels ) ; sixel_palette = ( unsigned char * ) RelinquishMagickMemory ( sixel_palette ) ; return ( DestroyImageList ( image ) ) ; } if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) { sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels ) ; sixel_palette = ( unsigned char * ) RelinquishMagickMemory ( sixel_palette ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; i < ( ssize_t ) image -> colors ; ++ i ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( sixel_palette [ i * 4 + 0 ] ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( sixel_palette [ i * 4 + 1 ] ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( sixel_palette [ i * 4 + 2 ] ) ; } j = 0 ; if ( image_info -> ping == MagickFalse ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { j = ( ssize_t ) sixel_pixels [ y * image -> columns + x ] ; SetPixelIndex ( image , j , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } if ( y < ( ssize_t ) image -> rows ) { sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels ) ; sixel_palette = ( unsigned char * ) RelinquishMagickMemory ( sixel_palette ) ; ThrowReaderException ( CorruptImageError , \"NotEnoughPixelData\" ) ; } } sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels ) ; sixel_palette = ( unsigned char * ) RelinquishMagickMemory ( sixel_palette ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RelinquishMagickMemory ( sixel_buffer ) ; sixel_pixels = ( unsigned char * ) RelinquishMagickMemory ( sixel_pixels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-119 void test_base64_decode ( void ) { char buffer [ 16 ] ; <S2SV_StartBug> int len = mutt_b64_decode ( buffer , encoded ) ; <S2SV_EndBug> if ( ! TEST_CHECK ( len == sizeof ( clear ) - 1 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , sizeof ( clear ) - 1 ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , len ) ; } buffer [ len ] = '\\\\0' ; if ( ! TEST_CHECK ( strcmp ( buffer , clear ) == 0 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%s\" , clear ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%s\" , buffer ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer , encoded , sizeof ( buffer )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000251\n\n```\nCWE-787 static int l2cap_sock_connect ( struct socket * sock , struct sockaddr * addr , int alen , int flags ) { struct sock * sk = sock -> sk ; struct sockaddr_l2 la ; int len , err = 0 ; BT_DBG ( \"sk<S2SV_blank>%p\" , sk ) ; if ( ! addr || addr -> sa_family != AF_BLUETOOTH ) return - EINVAL ; memset ( & la , 0 , sizeof ( la ) ) ; len = min_t ( unsigned int , sizeof ( la ) , alen ) ; memcpy ( & la , addr , len ) ; if ( la . l2_cid ) return - EINVAL ; lock_sock ( sk ) ; if ( sk -> sk_type == SOCK_SEQPACKET && ! la . l2_psm ) { err = - EINVAL ; goto done ; } switch ( l2cap_pi ( sk ) -> mode ) { case L2CAP_MODE_BASIC : break ; case L2CAP_MODE_ERTM : <S2SV_StartBug> if ( enable_ertm ) <S2SV_EndBug> break ; default : err = - ENOTSUPP ; goto done ; } switch ( sk -> sk_state ) { case BT_CONNECT : case BT_CONNECT2 : case BT_CONFIG : goto wait ; case BT_CONNECTED : goto done ; case BT_OPEN : case BT_BOUND : break ; default : err = - EBADFD ; goto done ; } bacpy ( & bt_sk ( sk ) -> dst , & la . l2_bdaddr ) ; l2cap_pi ( sk ) -> psm = la . l2_psm ; err = l2cap_do_connect ( sk ) ; if ( err ) goto done ; wait : err = bt_sock_wait_state ( sk , BT_CONNECTED , sock_sndtimeo ( sk , flags & O_NONBLOCK ) ) ; done : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case L2CAP_MODE_ERTM : case L2CAP_MODE_STREAMING :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19880\n\n```\nCWE-476 static ExprList * exprListAppendList ( Parse * pParse , ExprList * pList , ExprList * pAppend , int bIntToNull ) { if ( pAppend ) { int i ; int nInit = pList ? pList -> nExpr : 0 ; for ( i = 0 ; i < pAppend -> nExpr ; i ++ ) { Expr * pDup = sqlite3ExprDup ( pParse -> db , pAppend -> a [ i ] . pExpr , 0 ) ; <S2SV_StartBug> if ( bIntToNull && pDup && pDup -> op == TK_INTEGER ) { <S2SV_EndBug> pDup -> op = TK_NULL ; <S2SV_StartBug> pDup -> flags &= ~ ( EP_IntValue | EP_IsTrue | EP_IsFalse ) ; <S2SV_EndBug> } pList = sqlite3ExprListAppend ( pParse , pList , pDup ) ; if ( pList ) pList -> a [ nInit + i ] . sortFlags = pAppend -> a [ i ] . sortFlags ; } } return pList ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; assert ( pDup == 0 || ! ExprHasProperty ( pDup , EP_MemToken ) ) ; <S2SV_ModStart> | EP_IsFalse ) ; pDup -> u . zToken = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1763\n\n```\nCWE-20 static int __sock_diag_rcv_msg ( struct sk_buff * skb , struct nlmsghdr * nlh ) { int err ; struct sock_diag_req * req = nlmsg_data ( nlh ) ; const struct sock_diag_handler * hndl ; if ( nlmsg_len ( nlh ) < sizeof ( * req ) ) return - EINVAL ; <S2SV_StartBug> hndl = sock_diag_lock_handler ( req -> sdiag_family ) ; <S2SV_EndBug> if ( hndl == NULL ) err = - ENOENT ; else err = hndl -> dump ( skb , nlh ) ; sock_diag_unlock_handler ( hndl ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EINVAL ; if ( req -> sdiag_family >= AF_MAX ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> static inline ulong encode_twos_comp ( long n , int prec ) <S2SV_EndBug> { <S2SV_StartBug> ulong result ; <S2SV_EndBug> assert ( prec >= 2 ) ; jas_eprintf ( \"warning:<S2SV_blank>support<S2SV_blank>for<S2SV_blank>signed<S2SV_blank>data<S2SV_blank>is<S2SV_blank>untested\\\\n\" ) ; if ( n < 0 ) { result = - n ; result = ( result ^ 0xffffffffUL ) + 1 ; result &= ( 1 << prec ) - 1 ; } else { result = n ; } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static inline jas_ulong <S2SV_ModEnd> encode_twos_comp ( long <S2SV_ModStart> prec ) { jas_ulong <S2SV_ModEnd> result ; assert\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_eventquery ( unsigned long arg ) <S2SV_EndBug> { struct mpt_ioctl_eventquery __user * uarg = ( void __user * ) arg ; <S2SV_StartBug> struct mpt_ioctl_eventquery karg ; <S2SV_EndBug> MPT_ADAPTER * ioc ; int iocnum ; if ( copy_from_user ( & karg , uarg , sizeof ( struct mpt_ioctl_eventquery ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_eventquery<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>mpt_ioctl_eventquery<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uarg ) ; <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> } if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || ( ioc == NULL ) ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_eventquery()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; } dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"mptctl_eventquery<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; karg . eventEntries = MPTCTL_EVENT_LOG_SIZE ; karg . eventTypes = ioc -> eventTypes ; if ( copy_to_user ( ( char __user * ) arg , & karg , sizeof ( struct mpt_ioctl_eventquery ) ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_eventquery<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>out<S2SV_blank>mpt_ioctl_eventquery<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , uarg ) ; return - EFAULT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_eventquery ( MPT_ADAPTER * ioc , <S2SV_ModStart> struct mpt_ioctl_eventquery karg <S2SV_ModEnd> ; if ( <S2SV_ModStart> return - EFAULT <S2SV_ModEnd> ; } dctlprintk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6198\n\n```\nCWE-284 int vfs_rename ( struct inode * old_dir , struct dentry * old_dentry , struct inode * new_dir , struct dentry * new_dentry , struct inode * * delegated_inode , unsigned int flags ) { int error ; bool is_dir = d_is_dir ( old_dentry ) ; const unsigned char * old_name ; struct inode * source = old_dentry -> d_inode ; struct inode * target = new_dentry -> d_inode ; bool new_is_dir = false ; unsigned max_links = new_dir -> i_sb -> s_max_links ; <S2SV_StartBug> if ( source == target ) <S2SV_EndBug> return 0 ; error = may_delete ( old_dir , old_dentry , is_dir ) ; if ( error ) return error ; if ( ! target ) { error = may_create ( new_dir , new_dentry ) ; } else { new_is_dir = d_is_dir ( new_dentry ) ; if ( ! ( flags & RENAME_EXCHANGE ) ) error = may_delete ( new_dir , new_dentry , is_dir ) ; else error = may_delete ( new_dir , new_dentry , new_is_dir ) ; } if ( error ) return error ; if ( ! old_dir -> i_op -> rename && ! old_dir -> i_op -> rename2 ) return - EPERM ; if ( flags && ! old_dir -> i_op -> rename2 ) return - EINVAL ; if ( new_dir != old_dir ) { if ( is_dir ) { error = inode_permission ( source , MAY_WRITE ) ; if ( error ) return error ; } if ( ( flags & RENAME_EXCHANGE ) && new_is_dir ) { error = inode_permission ( target , MAY_WRITE ) ; if ( error ) return error ; } } error = security_inode_rename ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; if ( error ) return error ; old_name = fsnotify_oldname_init ( old_dentry -> d_name . name ) ; dget ( new_dentry ) ; if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) lock_two_nondirectories ( source , target ) ; else if ( target ) inode_lock ( target ) ; error = - EBUSY ; if ( is_local_mountpoint ( old_dentry ) || is_local_mountpoint ( new_dentry ) ) goto out ; if ( max_links && new_dir != old_dir ) { error = - EMLINK ; if ( is_dir && ! new_is_dir && new_dir -> i_nlink >= max_links ) goto out ; if ( ( flags & RENAME_EXCHANGE ) && ! is_dir && new_is_dir && old_dir -> i_nlink >= max_links ) goto out ; } if ( is_dir && ! ( flags & RENAME_EXCHANGE ) && target ) shrink_dcache_parent ( new_dentry ) ; if ( ! is_dir ) { error = try_break_deleg ( source , delegated_inode ) ; if ( error ) goto out ; } if ( target && ! new_is_dir ) { error = try_break_deleg ( target , delegated_inode ) ; if ( error ) goto out ; } if ( ! old_dir -> i_op -> rename2 ) { error = old_dir -> i_op -> rename ( old_dir , old_dentry , new_dir , new_dentry ) ; } else { WARN_ON ( old_dir -> i_op -> rename != NULL ) ; error = old_dir -> i_op -> rename2 ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; } if ( error ) goto out ; if ( ! ( flags & RENAME_EXCHANGE ) && target ) { if ( is_dir ) target -> i_flags |= S_DEAD ; dont_mount ( new_dentry ) ; detach_mounts ( new_dentry ) ; } if ( ! ( old_dir -> i_sb -> s_type -> fs_flags & FS_RENAME_DOES_D_MOVE ) ) { if ( ! ( flags & RENAME_EXCHANGE ) ) d_move ( old_dentry , new_dentry ) ; else d_exchange ( old_dentry , new_dentry ) ; } out : if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) unlock_two_nondirectories ( source , target ) ; else if ( target ) inode_unlock ( target ) ; dput ( new_dentry ) ; if ( ! error ) { fsnotify_move ( old_dir , new_dir , old_name , is_dir , ! ( flags & RENAME_EXCHANGE ) ? target : NULL , old_dentry ) ; if ( flags & RENAME_EXCHANGE ) { fsnotify_move ( new_dir , old_dir , old_dentry -> d_name . name , new_is_dir , NULL , new_dentry ) ; } } fsnotify_oldname_free ( old_name ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( vfs_select_inode ( old_dentry , 0 ) == vfs_select_inode ( new_dentry , 0 ) <S2SV_ModEnd> ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-863(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18397\n\n```\nCWE-863 static int userfaultfd_unregister ( struct userfaultfd_ctx * ctx , unsigned long arg ) { struct mm_struct * mm = ctx -> mm ; struct vm_area_struct * vma , * prev , * cur ; int ret ; struct uffdio_range uffdio_unregister ; unsigned long new_flags ; bool found ; unsigned long start , end , vma_end ; const void __user * buf = ( void __user * ) arg ; ret = - EFAULT ; if ( copy_from_user ( & uffdio_unregister , buf , sizeof ( uffdio_unregister ) ) ) goto out ; ret = validate_range ( mm , uffdio_unregister . start , uffdio_unregister . len ) ; if ( ret ) goto out ; start = uffdio_unregister . start ; end = start + uffdio_unregister . len ; ret = - ENOMEM ; if ( ! mmget_not_zero ( mm ) ) goto out ; down_write ( & mm -> mmap_sem ) ; vma = find_vma_prev ( mm , start , & prev ) ; if ( ! vma ) goto out_unlock ; ret = - EINVAL ; if ( vma -> vm_start >= end ) goto out_unlock ; if ( is_vm_hugetlb_page ( vma ) ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( vma ) ; if ( start & ( vma_hpagesize - 1 ) ) goto out_unlock ; } found = false ; ret = - EINVAL ; for ( cur = vma ; cur && cur -> vm_start < end ; cur = cur -> vm_next ) { cond_resched ( ) ; BUG_ON ( ! ! cur -> vm_userfaultfd_ctx . ctx ^ ! ! ( cur -> vm_flags & ( VM_UFFD_MISSING | VM_UFFD_WP ) ) ) ; if ( ! vma_can_userfault ( cur ) ) goto out_unlock ; found = true ; } BUG_ON ( ! found ) ; if ( vma -> vm_start < start ) prev = vma ; ret = 0 ; do { cond_resched ( ) ; BUG_ON ( ! vma_can_userfault ( vma ) ) ; <S2SV_StartBug> if ( ! vma -> vm_userfaultfd_ctx . ctx ) <S2SV_EndBug> goto skip ; if ( vma -> vm_start > start ) start = vma -> vm_start ; vma_end = min ( end , vma -> vm_end ) ; if ( userfaultfd_missing ( vma ) ) { struct userfaultfd_wake_range range ; range . start = start ; range . len = vma_end - start ; wake_userfault ( vma -> vm_userfaultfd_ctx . ctx , & range ) ; } new_flags = vma -> vm_flags & ~ ( VM_UFFD_MISSING | VM_UFFD_WP ) ; prev = vma_merge ( mm , prev , start , vma_end , new_flags , vma -> anon_vma , vma -> vm_file , vma -> vm_pgoff , vma_policy ( vma ) , NULL_VM_UFFD_CTX ) ; if ( prev ) { vma = prev ; goto next ; } if ( vma -> vm_start < start ) { ret = split_vma ( mm , vma , start , 1 ) ; if ( ret ) break ; } if ( vma -> vm_end > end ) { ret = split_vma ( mm , vma , end , 0 ) ; if ( ret ) break ; } next : vma -> vm_flags = new_flags ; vma -> vm_userfaultfd_ctx = NULL_VM_UFFD_CTX ; skip : prev = vma ; start = vma -> vm_end ; vma = vma -> vm_next ; } while ( vma && vma -> vm_start < end ) ; out_unlock : up_write ( & mm -> mmap_sem ) ; mmput ( mm ) ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; WARN_ON ( ! ( vma -> vm_flags & VM_MAYWRITE ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1833\n\n```\nCWE-264 <S2SV_StartBug> static int ecryptfs_parse_options ( struct ecryptfs_sb_info * sbi , char * options ) <S2SV_EndBug> { char * p ; int rc = 0 ; int sig_set = 0 ; int cipher_name_set = 0 ; int fn_cipher_name_set = 0 ; int cipher_key_bytes ; int cipher_key_bytes_set = 0 ; int fn_cipher_key_bytes ; int fn_cipher_key_bytes_set = 0 ; struct ecryptfs_mount_crypt_stat * mount_crypt_stat = & sbi -> mount_crypt_stat ; substring_t args [ MAX_OPT_ARGS ] ; int token ; char * sig_src ; char * cipher_name_dst ; char * cipher_name_src ; char * fn_cipher_name_dst ; char * fn_cipher_name_src ; char * fnek_dst ; char * fnek_src ; char * cipher_key_bytes_src ; char * fn_cipher_key_bytes_src ; <S2SV_StartBug> if ( ! options ) { <S2SV_EndBug> rc = - EINVAL ; goto out ; } ecryptfs_init_mount_crypt_stat ( mount_crypt_stat ) ; while ( ( p = strsep ( & options , \",\" ) ) != NULL ) { if ( ! * p ) continue ; token = match_token ( p , tokens , args ) ; switch ( token ) { case ecryptfs_opt_sig : case ecryptfs_opt_ecryptfs_sig : sig_src = args [ 0 ] . from ; rc = ecryptfs_add_global_auth_tok ( mount_crypt_stat , sig_src , 0 ) ; if ( rc ) { printk ( KERN_ERR \"Error<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>register<S2SV_blank>\" \"global<S2SV_blank>sig;<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , rc ) ; goto out ; } sig_set = 1 ; break ; case ecryptfs_opt_cipher : case ecryptfs_opt_ecryptfs_cipher : cipher_name_src = args [ 0 ] . from ; cipher_name_dst = mount_crypt_stat -> global_default_cipher_name ; strncpy ( cipher_name_dst , cipher_name_src , ECRYPTFS_MAX_CIPHER_NAME_SIZE ) ; cipher_name_dst [ ECRYPTFS_MAX_CIPHER_NAME_SIZE ] = '\\\\0' ; cipher_name_set = 1 ; break ; case ecryptfs_opt_ecryptfs_key_bytes : cipher_key_bytes_src = args [ 0 ] . from ; cipher_key_bytes = ( int ) simple_strtol ( cipher_key_bytes_src , & cipher_key_bytes_src , 0 ) ; mount_crypt_stat -> global_default_cipher_key_size = cipher_key_bytes ; cipher_key_bytes_set = 1 ; break ; case ecryptfs_opt_passthrough : mount_crypt_stat -> flags |= ECRYPTFS_PLAINTEXT_PASSTHROUGH_ENABLED ; break ; case ecryptfs_opt_xattr_metadata : mount_crypt_stat -> flags |= ECRYPTFS_XATTR_METADATA_ENABLED ; break ; case ecryptfs_opt_encrypted_view : mount_crypt_stat -> flags |= ECRYPTFS_XATTR_METADATA_ENABLED ; mount_crypt_stat -> flags |= ECRYPTFS_ENCRYPTED_VIEW_ENABLED ; break ; case ecryptfs_opt_fnek_sig : fnek_src = args [ 0 ] . from ; fnek_dst = mount_crypt_stat -> global_default_fnek_sig ; strncpy ( fnek_dst , fnek_src , ECRYPTFS_SIG_SIZE_HEX ) ; mount_crypt_stat -> global_default_fnek_sig [ ECRYPTFS_SIG_SIZE_HEX ] = '\\\\0' ; rc = ecryptfs_add_global_auth_tok ( mount_crypt_stat , mount_crypt_stat -> global_default_fnek_sig , ECRYPTFS_AUTH_TOK_FNEK ) ; if ( rc ) { printk ( KERN_ERR \"Error<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>register<S2SV_blank>\" \"global<S2SV_blank>fnek<S2SV_blank>sig<S2SV_blank>[%s];<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , mount_crypt_stat -> global_default_fnek_sig , rc ) ; goto out ; } mount_crypt_stat -> flags |= ( ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES | ECRYPTFS_GLOBAL_ENCFN_USE_MOUNT_FNEK ) ; break ; case ecryptfs_opt_fn_cipher : fn_cipher_name_src = args [ 0 ] . from ; fn_cipher_name_dst = mount_crypt_stat -> global_default_fn_cipher_name ; strncpy ( fn_cipher_name_dst , fn_cipher_name_src , ECRYPTFS_MAX_CIPHER_NAME_SIZE ) ; mount_crypt_stat -> global_default_fn_cipher_name [ ECRYPTFS_MAX_CIPHER_NAME_SIZE ] = '\\\\0' ; fn_cipher_name_set = 1 ; break ; case ecryptfs_opt_fn_cipher_key_bytes : fn_cipher_key_bytes_src = args [ 0 ] . from ; fn_cipher_key_bytes = ( int ) simple_strtol ( fn_cipher_key_bytes_src , & fn_cipher_key_bytes_src , 0 ) ; mount_crypt_stat -> global_default_fn_cipher_key_bytes = fn_cipher_key_bytes ; fn_cipher_key_bytes_set = 1 ; break ; case ecryptfs_opt_unlink_sigs : mount_crypt_stat -> flags |= ECRYPTFS_UNLINK_SIGS ; break ; case ecryptfs_opt_mount_auth_tok_only : mount_crypt_stat -> flags |= ECRYPTFS_GLOBAL_MOUNT_AUTH_TOK_ONLY ; break ; <S2SV_StartBug> case ecryptfs_opt_err : <S2SV_EndBug> default : printk ( KERN_WARNING \"%s:<S2SV_blank>eCryptfs:<S2SV_blank>unrecognized<S2SV_blank>option<S2SV_blank>[%s]\\\\n\" , __func__ , p ) ; } } if ( ! sig_set ) { rc = - EINVAL ; ecryptfs_printk ( KERN_ERR , \"You<S2SV_blank>must<S2SV_blank>supply<S2SV_blank>at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>valid<S2SV_blank>\" \"auth<S2SV_blank>tok<S2SV_blank>signature<S2SV_blank>as<S2SV_blank>a<S2SV_blank>mount<S2SV_blank>\" \"parameter;<S2SV_blank>see<S2SV_blank>the<S2SV_blank>eCryptfs<S2SV_blank>README\\\\n\" ) ; goto out ; } if ( ! cipher_name_set ) { int cipher_name_len = strlen ( ECRYPTFS_DEFAULT_CIPHER ) ; BUG_ON ( cipher_name_len >= ECRYPTFS_MAX_CIPHER_NAME_SIZE ) ; strcpy ( mount_crypt_stat -> global_default_cipher_name , ECRYPTFS_DEFAULT_CIPHER ) ; } if ( ( mount_crypt_stat -> flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES ) && ! fn_cipher_name_set ) strcpy ( mount_crypt_stat -> global_default_fn_cipher_name , mount_crypt_stat -> global_default_cipher_name ) ; if ( ! cipher_key_bytes_set ) mount_crypt_stat -> global_default_cipher_key_size = 0 ; if ( ( mount_crypt_stat -> flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES ) && ! fn_cipher_key_bytes_set ) mount_crypt_stat -> global_default_fn_cipher_key_bytes = mount_crypt_stat -> global_default_cipher_key_size ; mutex_lock ( & key_tfm_list_mutex ) ; if ( ! ecryptfs_tfm_exists ( mount_crypt_stat -> global_default_cipher_name , NULL ) ) { rc = ecryptfs_add_new_key_tfm ( NULL , mount_crypt_stat -> global_default_cipher_name , mount_crypt_stat -> global_default_cipher_key_size ) ; if ( rc ) { printk ( KERN_ERR \"Error<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>\" \"cipher<S2SV_blank>with<S2SV_blank>name<S2SV_blank>=<S2SV_blank>[%s]<S2SV_blank>and<S2SV_blank>key<S2SV_blank>size<S2SV_blank>=<S2SV_blank>[%td];<S2SV_blank>\" \"rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , mount_crypt_stat -> global_default_cipher_name , mount_crypt_stat -> global_default_cipher_key_size , rc ) ; rc = - EINVAL ; mutex_unlock ( & key_tfm_list_mutex ) ; goto out ; } } if ( ( mount_crypt_stat -> flags & ECRYPTFS_GLOBAL_ENCRYPT_FILENAMES ) && ! ecryptfs_tfm_exists ( mount_crypt_stat -> global_default_fn_cipher_name , NULL ) ) { rc = ecryptfs_add_new_key_tfm ( NULL , mount_crypt_stat -> global_default_fn_cipher_name , mount_crypt_stat -> global_default_fn_cipher_key_bytes ) ; if ( rc ) { printk ( KERN_ERR \"Error<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>\" \"cipher<S2SV_blank>with<S2SV_blank>name<S2SV_blank>=<S2SV_blank>[%s]<S2SV_blank>and<S2SV_blank>key<S2SV_blank>size<S2SV_blank>=<S2SV_blank>[%td];<S2SV_blank>\" \"rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , mount_crypt_stat -> global_default_fn_cipher_name , mount_crypt_stat -> global_default_fn_cipher_key_bytes , rc ) ; rc = - EINVAL ; mutex_unlock ( & key_tfm_list_mutex ) ; goto out ; } } mutex_unlock ( & key_tfm_list_mutex ) ; rc = ecryptfs_init_global_auth_toks ( mount_crypt_stat ) ; if ( rc ) printk ( KERN_WARNING \"One<S2SV_blank>or<S2SV_blank>more<S2SV_blank>global<S2SV_blank>auth<S2SV_blank>toks<S2SV_blank>could<S2SV_blank>not<S2SV_blank>\" \"properly<S2SV_blank>register;<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , rc ) ; out : return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * options , uid_t * check_ruid <S2SV_ModStart> * fn_cipher_key_bytes_src ; * check_ruid = 0 ; <S2SV_ModStart> break ; case ecryptfs_opt_check_dev_ruid : * check_ruid = 1 ; break ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-119 enum ImapAuthRes imap_auth_cram_md5 ( struct ImapData * idata , const char * method ) { char ibuf [ LONG_STRING * 2 ] , obuf [ LONG_STRING ] ; unsigned char hmac_response [ MD5_DIGEST_LEN ] ; int len ; int rc ; if ( ! mutt_bit_isset ( idata -> capabilities , ACRAM_MD5 ) ) return IMAP_AUTH_UNAVAIL ; mutt_message ( _ ( \"Authenticating<S2SV_blank>(CRAM-MD5)...\" ) ) ; if ( mutt_account_getlogin ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; if ( mutt_account_getpass ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; imap_cmd_start ( idata , \"AUTHENTICATE<S2SV_blank>CRAM-MD5\" ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_RESPOND ) { mutt_debug ( 1 , \"Invalid<S2SV_blank>response<S2SV_blank>from<S2SV_blank>server:<S2SV_blank>%s\\\\n\" , ibuf ) ; goto bail ; } <S2SV_StartBug> len = mutt_b64_decode ( obuf , idata -> buf + 2 ) ; <S2SV_EndBug> if ( len == - 1 ) { mutt_debug ( 1 , \"Error<S2SV_blank>decoding<S2SV_blank>base64<S2SV_blank>response.\\\\n\" ) ; goto bail ; } obuf [ len ] = '\\\\0' ; mutt_debug ( 2 , \"CRAM<S2SV_blank>challenge:<S2SV_blank>%s\\\\n\" , obuf ) ; hmac_md5 ( idata -> conn -> account . pass , obuf , hmac_response ) ; int off = snprintf ( obuf , sizeof ( obuf ) , \"%s<S2SV_blank>\" , idata -> conn -> account . user ) ; mutt_md5_toascii ( hmac_response , obuf + off ) ; mutt_debug ( 2 , \"CRAM<S2SV_blank>response:<S2SV_blank>%s\\\\n\" , obuf ) ; mutt_b64_encode ( ibuf , obuf , strlen ( obuf ) , sizeof ( ibuf ) - 2 ) ; mutt_str_strcat ( ibuf , sizeof ( ibuf ) , \"\\\\r\\\\n\" ) ; mutt_socket_send ( idata -> conn , ibuf ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_OK ) { mutt_debug ( 1 , \"Error<S2SV_blank>receiving<S2SV_blank>server<S2SV_blank>response.\\\\n\" ) ; goto bail ; } if ( imap_code ( idata -> buf ) ) return IMAP_AUTH_SUCCESS ; bail : mutt_error ( _ ( \"CRAM-MD5<S2SV_blank>authentication<S2SV_blank>failed.\" ) ) ; return IMAP_AUTH_FAILURE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buf + 2 , sizeof ( obuf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3842\n\n```\nCWE-119 <S2SV_StartBug> int Downmix_Reset ( downmix_object_t * pDownmixer , bool init ) { <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> downmix_object_t * pDownmixer __unused <S2SV_ModStart> , bool init __unused\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 int ext4_ext_get_blocks ( handle_t * handle , struct inode * inode , ext4_lblk_t iblock , unsigned int max_blocks , struct buffer_head * bh_result , int flags ) { struct ext4_ext_path * path = NULL ; struct ext4_extent_header * eh ; struct ext4_extent newex , * ex , * last_ex ; ext4_fsblk_t newblock ; int err = 0 , depth , ret , cache_type ; unsigned int allocated = 0 ; struct ext4_allocation_request ar ; ext4_io_end_t * io = EXT4_I ( inode ) -> cur_aio_dio ; __clear_bit ( BH_New , & bh_result -> b_state ) ; ext_debug ( \"blocks<S2SV_blank>%u/%u<S2SV_blank>requested<S2SV_blank>for<S2SV_blank>inode<S2SV_blank>%lu\\\\n\" , iblock , max_blocks , inode -> i_ino ) ; cache_type = ext4_ext_in_cache ( inode , iblock , & newex ) ; if ( cache_type ) { if ( cache_type == EXT4_EXT_CACHE_GAP ) { if ( ( flags & EXT4_GET_BLOCKS_CREATE ) == 0 ) { goto out2 ; } } else if ( cache_type == EXT4_EXT_CACHE_EXTENT ) { newblock = iblock - le32_to_cpu ( newex . ee_block ) + ext_pblock ( & newex ) ; allocated = ext4_ext_get_actual_len ( & newex ) - ( iblock - le32_to_cpu ( newex . ee_block ) ) ; goto out ; } else { BUG ( ) ; } } path = ext4_ext_find_extent ( inode , iblock , NULL ) ; if ( IS_ERR ( path ) ) { err = PTR_ERR ( path ) ; path = NULL ; goto out2 ; } depth = ext_depth ( inode ) ; if ( path [ depth ] . p_ext == NULL && depth != 0 ) { ext4_error ( inode -> i_sb , \"bad<S2SV_blank>extent<S2SV_blank>address<S2SV_blank>\" \"inode:<S2SV_blank>%lu,<S2SV_blank>iblock:<S2SV_blank>%d,<S2SV_blank>depth:<S2SV_blank>%d\" , inode -> i_ino , iblock , depth ) ; err = - EIO ; goto out2 ; } eh = path [ depth ] . p_hdr ; ex = path [ depth ] . p_ext ; if ( ex ) { ext4_lblk_t ee_block = le32_to_cpu ( ex -> ee_block ) ; ext4_fsblk_t ee_start = ext_pblock ( ex ) ; unsigned short ee_len ; ee_len = ext4_ext_get_actual_len ( ex ) ; if ( iblock >= ee_block && iblock < ee_block + ee_len ) { newblock = iblock - ee_block + ee_start ; allocated = ee_len - ( iblock - ee_block ) ; ext_debug ( \"%u<S2SV_blank>fit<S2SV_blank>into<S2SV_blank>%u:%d<S2SV_blank>-><S2SV_blank>%llu\\\\n\" , iblock , ee_block , ee_len , newblock ) ; if ( ! ext4_ext_is_uninitialized ( ex ) ) { ext4_ext_put_in_cache ( inode , ee_block , ee_len , ee_start , EXT4_EXT_CACHE_EXTENT ) ; goto out ; } ret = ext4_ext_handle_uninitialized_extents ( handle , inode , iblock , max_blocks , path , flags , allocated , bh_result , newblock ) ; return ret ; } } if ( ( flags & EXT4_GET_BLOCKS_CREATE ) == 0 ) { ext4_ext_put_gap_in_cache ( inode , path , iblock ) ; goto out2 ; } ar . lleft = iblock ; err = ext4_ext_search_left ( inode , path , & ar . lleft , & ar . pleft ) ; if ( err ) goto out2 ; ar . lright = iblock ; err = ext4_ext_search_right ( inode , path , & ar . lright , & ar . pright ) ; if ( err ) goto out2 ; if ( max_blocks > EXT_INIT_MAX_LEN && ! ( flags & EXT4_GET_BLOCKS_UNINIT_EXT ) ) max_blocks = EXT_INIT_MAX_LEN ; else if ( max_blocks > EXT_UNINIT_MAX_LEN && ( flags & EXT4_GET_BLOCKS_UNINIT_EXT ) ) max_blocks = EXT_UNINIT_MAX_LEN ; newex . ee_block = cpu_to_le32 ( iblock ) ; newex . ee_len = cpu_to_le16 ( max_blocks ) ; err = ext4_ext_check_overlap ( inode , & newex , path ) ; if ( err ) allocated = ext4_ext_get_actual_len ( & newex ) ; else allocated = max_blocks ; ar . inode = inode ; ar . goal = ext4_ext_find_goal ( inode , path , iblock ) ; ar . logical = iblock ; ar . len = allocated ; if ( S_ISREG ( inode -> i_mode ) ) ar . flags = EXT4_MB_HINT_DATA ; else ar . flags = 0 ; newblock = ext4_mb_new_blocks ( handle , & ar , & err ) ; if ( ! newblock ) goto out2 ; ext_debug ( \"allocate<S2SV_blank>new<S2SV_blank>block:<S2SV_blank>goal<S2SV_blank>%llu,<S2SV_blank>found<S2SV_blank>%llu/%u\\\\n\" , ar . goal , newblock , allocated ) ; ext4_ext_store_pblock ( & newex , newblock ) ; newex . ee_len = cpu_to_le16 ( ar . len ) ; if ( flags & EXT4_GET_BLOCKS_UNINIT_EXT ) { ext4_ext_mark_uninitialized ( & newex ) ; <S2SV_StartBug> if ( flags == EXT4_GET_BLOCKS_PRE_IO ) { <S2SV_EndBug> if ( io ) io -> flag = EXT4_IO_UNWRITTEN ; else ext4_set_inode_state ( inode , EXT4_STATE_DIO_UNWRITTEN ) ; <S2SV_StartBug> } <S2SV_EndBug> } if ( unlikely ( EXT4_I ( inode ) -> i_flags & EXT4_EOFBLOCKS_FL ) ) { if ( eh -> eh_entries ) { last_ex = EXT_LAST_EXTENT ( eh ) ; if ( iblock + ar . len > le32_to_cpu ( last_ex -> ee_block ) + ext4_ext_get_actual_len ( last_ex ) ) EXT4_I ( inode ) -> i_flags &= ~ EXT4_EOFBLOCKS_FL ; } else { WARN_ON ( eh -> eh_entries == 0 ) ; ext4_error ( inode -> i_sb , __func__ , \"inode#%lu,<S2SV_blank>eh->eh_entries<S2SV_blank>=<S2SV_blank>0!\" , inode -> i_ino ) ; } } err = ext4_ext_insert_extent ( handle , inode , path , & newex , flags ) ; if ( err ) { ext4_discard_preallocations ( inode ) ; ext4_free_blocks ( handle , inode , 0 , ext_pblock ( & newex ) , ext4_ext_get_actual_len ( & newex ) , 0 ) ; goto out2 ; } newblock = ext_pblock ( & newex ) ; allocated = ext4_ext_get_actual_len ( & newex ) ; if ( allocated > max_blocks ) allocated = max_blocks ; set_buffer_new ( bh_result ) ; if ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) ext4_da_update_reserve_space ( inode , allocated , 1 ) ; if ( ( flags & EXT4_GET_BLOCKS_UNINIT_EXT ) == 0 ) { ext4_ext_put_in_cache ( inode , iblock , allocated , newblock , EXT4_EXT_CACHE_EXTENT ) ; ext4_update_inode_fsync_trans ( handle , inode , 1 ) ; } else ext4_update_inode_fsync_trans ( handle , inode , 0 ) ; out : if ( allocated > max_blocks ) allocated = max_blocks ; ext4_ext_show_leaf ( inode , path ) ; set_buffer_mapped ( bh_result ) ; bh_result -> b_bdev = inode -> i_sb -> s_bdev ; bh_result -> b_blocknr = newblock ; out2 : if ( path ) { ext4_ext_drop_refs ( path ) ; kfree ( path ) ; } return err ? err : allocated ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( flags & EXT4_GET_BLOCKS_PRE_IO ) ) <S2SV_ModEnd> { if ( <S2SV_ModStart> ) ; } if ( ext4_should_dioread_nolock ( inode ) ) set_buffer_uninit ( bh_result ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5355\n\n```\nCWE-000 int main ( argc , argv ) int argc ; char * argv [ ] ; { krb5_data pname_data , tkt_data ; int sock = 0 ; socklen_t l ; int retval ; struct sockaddr_in l_inaddr , f_inaddr ; krb5_creds creds , * new_creds ; krb5_ccache cc ; krb5_data msgtext , msg ; krb5_context context ; krb5_auth_context auth_context = NULL ; # ifndef DEBUG freopen ( \"/tmp/uu-server.log\" , \"w\" , stderr ) ; # endif retval = krb5_init_context ( & context ) ; if ( retval ) { com_err ( argv [ 0 ] , retval , \"while<S2SV_blank>initializing<S2SV_blank>krb5\" ) ; exit ( 1 ) ; } # ifdef DEBUG { int one = 1 ; int acc ; struct servent * sp ; socklen_t namelen = sizeof ( f_inaddr ) ; if ( ( sock = socket ( PF_INET , SOCK_STREAM , 0 ) ) < 0 ) { com_err ( \"uu-server\" , errno , \"creating<S2SV_blank>socket\" ) ; exit ( 3 ) ; } l_inaddr . sin_family = AF_INET ; l_inaddr . sin_addr . s_addr = 0 ; if ( argc == 2 ) { l_inaddr . sin_port = htons ( atoi ( argv [ 1 ] ) ) ; } else { if ( ! ( sp = getservbyname ( \"uu-sample\" , \"tcp\" ) ) ) { com_err ( \"uu-server\" , 0 , \"can\\'t<S2SV_blank>find<S2SV_blank>uu-sample/tcp<S2SV_blank>service\" ) ; exit ( 3 ) ; } l_inaddr . sin_port = sp -> s_port ; } ( void ) setsockopt ( sock , SOL_SOCKET , SO_REUSEADDR , ( char * ) & one , sizeof ( one ) ) ; if ( bind ( sock , ( struct sockaddr * ) & l_inaddr , sizeof ( l_inaddr ) ) ) { com_err ( \"uu-server\" , errno , \"binding<S2SV_blank>socket\" ) ; exit ( 3 ) ; } if ( listen ( sock , 1 ) == - 1 ) { com_err ( \"uu-server\" , errno , \"listening\" ) ; exit ( 3 ) ; } printf ( \"Server<S2SV_blank>started\\\\n\" ) ; fflush ( stdout ) ; if ( ( acc = accept ( sock , ( struct sockaddr * ) & f_inaddr , & namelen ) ) == - 1 ) { com_err ( \"uu-server\" , errno , \"accepting\" ) ; exit ( 3 ) ; } dup2 ( acc , 0 ) ; close ( sock ) ; sock = 0 ; } # endif retval = krb5_read_message ( context , ( krb5_pointer ) & sock , & pname_data ) ; <S2SV_StartBug> if ( retval ) { <S2SV_EndBug> com_err ( \"uu-server\" , retval , \"reading<S2SV_blank>pname\" ) ; return 2 ; } retval = krb5_read_message ( context , ( krb5_pointer ) & sock , & tkt_data ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"reading<S2SV_blank>ticket<S2SV_blank>data\" ) ; return 2 ; } retval = krb5_cc_default ( context , & cc ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"getting<S2SV_blank>credentials<S2SV_blank>cache\" ) ; return 4 ; } memset ( & creds , 0 , sizeof ( creds ) ) ; retval = krb5_cc_get_principal ( context , cc , & creds . client ) ; if ( retval ) { com_err ( \"uu-client\" , retval , \"getting<S2SV_blank>principal<S2SV_blank>name\" ) ; return 6 ; } printf ( \"uu-server:<S2SV_blank>client<S2SV_blank>principal<S2SV_blank>is<S2SV_blank>\\\\\"%s\\\\\".\\\\n\" , pname_data . data ) ; retval = krb5_parse_name ( context , pname_data . data , & creds . server ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"parsing<S2SV_blank>client<S2SV_blank>name\" ) ; return 3 ; } creds . second_ticket = tkt_data ; printf ( \"uu-server:<S2SV_blank>client<S2SV_blank>ticket<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes.\\\\n\" , creds . second_ticket . length ) ; retval = krb5_get_credentials ( context , KRB5_GC_USER_USER , cc , & creds , & new_creds ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"getting<S2SV_blank>user-user<S2SV_blank>ticket\" ) ; return 5 ; } # ifndef DEBUG l = sizeof ( f_inaddr ) ; if ( getpeername ( 0 , ( struct sockaddr * ) & f_inaddr , & l ) == - 1 ) { com_err ( \"uu-server\" , errno , \"getting<S2SV_blank>client<S2SV_blank>address\" ) ; return 6 ; } # endif l = sizeof ( l_inaddr ) ; if ( getsockname ( 0 , ( struct sockaddr * ) & l_inaddr , & l ) == - 1 ) { com_err ( \"uu-server\" , errno , \"getting<S2SV_blank>local<S2SV_blank>address\" ) ; return 6 ; } retval = krb5_auth_con_init ( context , & auth_context ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"making<S2SV_blank>auth_context\" ) ; return 8 ; } retval = krb5_auth_con_setflags ( context , auth_context , KRB5_AUTH_CONTEXT_DO_SEQUENCE ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"initializing<S2SV_blank>the<S2SV_blank>auth_context<S2SV_blank>flags\" ) ; return 8 ; } retval = krb5_auth_con_genaddrs ( context , auth_context , sock , KRB5_AUTH_CONTEXT_GENERATE_LOCAL_FULL_ADDR | KRB5_AUTH_CONTEXT_GENERATE_REMOTE_FULL_ADDR ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"generating<S2SV_blank>addrs<S2SV_blank>for<S2SV_blank>auth_context\" ) ; return 9 ; } # if 1 retval = krb5_mk_req_extended ( context , & auth_context , AP_OPTS_USE_SESSION_KEY , NULL , new_creds , & msg ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"making<S2SV_blank>AP_REQ\" ) ; return 8 ; } retval = krb5_write_message ( context , ( krb5_pointer ) & sock , & msg ) ; # else retval = krb5_sendauth ( context , & auth_context , ( krb5_pointer ) & sock , \"???\" , 0 , 0 , AP_OPTS_MUTUAL_REQUIRED | AP_OPTS_USE_SESSION_KEY , NULL , & creds , cc , NULL , NULL , NULL ) ; # endif if ( retval ) goto cl_short_wrt ; free ( msg . data ) ; msgtext . length = 32 ; msgtext . data = \"Hello,<S2SV_blank>other<S2SV_blank>end<S2SV_blank>of<S2SV_blank>connection.\" ; retval = krb5_mk_safe ( context , auth_context , & msgtext , & msg , NULL ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"encoding<S2SV_blank>message<S2SV_blank>to<S2SV_blank>client\" ) ; return 6 ; } retval = krb5_write_message ( context , ( krb5_pointer ) & sock , & msg ) ; if ( retval ) { cl_short_wrt : com_err ( \"uu-server\" , retval , \"writing<S2SV_blank>message<S2SV_blank>to<S2SV_blank>client\" ) ; return 7 ; } krb5_free_data_contents ( context , & msg ) ; krb5_free_data_contents ( context , & pname_data ) ; krb5_free_cred_contents ( context , & creds ) ; krb5_free_creds ( context , new_creds ) ; krb5_cc_close ( context , cc ) ; krb5_auth_con_free ( context , auth_context ) ; krb5_free_context ( context ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( retval || pname_data . length == 0 || pname_data . data [ pname_data . length - 1 ] != '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11363\n\n```\nCWE-125 static int jpeg_size ( unsigned char * data , unsigned int data_size , int * width , int * height ) { int i = 0 ; if ( i + 3 < data_size && data [ i ] == 0xFF && data [ i + 1 ] == 0xD8 && data [ i + 2 ] == 0xFF && data [ i + 3 ] == 0xE0 ) { i += 4 ; if ( i + 6 < data_size && data [ i + 2 ] == 'J' && data [ i + 3 ] == 'F' && data [ i + 4 ] == 'I' && data [ i + 5 ] == 'F' && data [ i + 6 ] == 0x00 ) { unsigned short block_length = data [ i ] * 256 + data [ i + 1 ] ; while ( i < data_size ) { i += block_length ; if ( ( i + 1 ) >= data_size ) return - 1 ; if ( data [ i ] != 0xFF ) return - 1 ; if ( data [ i + 1 ] == 0xC0 ) { * height = data [ i + 5 ] * 256 + data [ i + 6 ] ; * width = data [ i + 7 ] * 256 + data [ i + 8 ] ; return 0 ; } i += 2 ; <S2SV_StartBug> block_length = data [ i ] * 256 + data [ i + 1 ] ; <S2SV_EndBug> } } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += 2 ; if ( i + 1 < data_size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { AVFilterContext * ctx = inlink -> dst ; BoxBlurContext * s = ctx -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; AVFrame * out ; int plane ; int cw = FF_CEIL_RSHIFT ( inlink -> w , s -> hsub ) , ch = FF_CEIL_RSHIFT ( in -> height , s -> vsub ) ; int w [ 4 ] = { inlink -> w , cw , cw , inlink -> w } ; int h [ 4 ] = { in -> height , ch , ch , in -> height } ; out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; <S2SV_StartBug> for ( plane = 0 ; in -> data [ plane ] && plane < 4 ; plane ++ ) <S2SV_EndBug> hblur ( out -> data [ plane ] , out -> linesize [ plane ] , in -> data [ plane ] , in -> linesize [ plane ] , w [ plane ] , h [ plane ] , s -> radius [ plane ] , s -> power [ plane ] , s -> temp ) ; <S2SV_StartBug> for ( plane = 0 ; in -> data [ plane ] && plane < 4 ; plane ++ ) <S2SV_EndBug> vblur ( out -> data [ plane ] , out -> linesize [ plane ] , out -> data [ plane ] , out -> linesize [ plane ] , w [ plane ] , h [ plane ] , s -> radius [ plane ] , s -> power [ plane ] , s -> temp ) ; av_frame_free ( & in ) ; return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> plane < 4 <S2SV_ModStart> plane < 4 && in -> data [ plane ] && in -> linesize [ plane ] <S2SV_ModStart> = 0 ; <S2SV_ModEnd> plane < 4 <S2SV_ModStart> plane < 4 && in -> data [ plane ] && in -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void define_gf_group ( VP9_COMP * cpi , FIRSTPASS_STATS * this_frame ) { <S2SV_StartBug> RATE_CONTROL * const rc = & cpi -> rc ; <S2SV_EndBug> <S2SV_StartBug> VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> <S2SV_StartBug> struct twopass_rc * const twopass = & cpi -> twopass ; <S2SV_EndBug> <S2SV_StartBug> FIRSTPASS_STATS next_frame = { 0 } ; <S2SV_EndBug> <S2SV_StartBug> const FIRSTPASS_STATS * start_pos ; <S2SV_EndBug> int i ; double boost_score = 0.0 ; double old_boost_score = 0.0 ; double gf_group_err = 0.0 ; <S2SV_StartBug> double gf_first_frame_err = 0.0 ; <S2SV_EndBug> double mod_frame_err = 0.0 ; double mv_ratio_accumulator = 0.0 ; double decay_accumulator = 1.0 ; double zero_motion_accumulator = 1.0 ; double loop_decay_rate = 1.00 ; double last_loop_decay_rate = 1.00 ; double this_frame_mv_in_out = 0.0 ; double mv_in_out_accumulator = 0.0 ; double abs_mv_in_out_accumulator = 0.0 ; double mv_ratio_accumulator_thresh ; <S2SV_StartBug> const int max_bits = frame_max_bits ( rc , oxcf ) ; <S2SV_EndBug> unsigned int allow_alt_ref = oxcf -> play_alternate && oxcf -> lag_in_frames ; int f_boost = 0 ; int b_boost = 0 ; int flash_detected ; int active_max_gf_interval ; twopass -> gf_group_bits = 0 ; vp9_clear_system_state ( ) ; start_pos = twopass -> stats_in ; mod_frame_err = calculate_modified_err ( cpi , this_frame ) ; gf_first_frame_err = mod_frame_err ; if ( cpi -> common . frame_type == KEY_FRAME || rc -> source_alt_ref_active ) gf_group_err -= gf_first_frame_err ; <S2SV_StartBug> mv_ratio_accumulator_thresh = ( cpi -> common . width + cpi -> common . height ) / 10.0 ; <S2SV_EndBug> active_max_gf_interval = 12 + ( ( int ) vp9_convert_qindex_to_q ( rc -> last_q [ INTER_FRAME ] ) >> 5 ) ; if ( active_max_gf_interval > rc -> max_gf_interval ) <S2SV_StartBug> active_max_gf_interval = rc -> max_gf_interval ; <S2SV_EndBug> i = 0 ; while ( i < rc -> static_scene_max_gf_interval && i < rc -> frames_to_key ) { ++ i ; <S2SV_StartBug> mod_frame_err = calculate_modified_err ( cpi , this_frame ) ; <S2SV_EndBug> gf_group_err += mod_frame_err ; <S2SV_StartBug> if ( EOF == input_stats ( twopass , & next_frame ) ) <S2SV_EndBug> break ; flash_detected = detect_flash ( twopass , 0 ) ; accumulate_frame_motion_stats ( & next_frame , & this_frame_mv_in_out , & mv_in_out_accumulator , & abs_mv_in_out_accumulator , & mv_ratio_accumulator ) ; if ( ! flash_detected ) { last_loop_decay_rate = loop_decay_rate ; <S2SV_StartBug> loop_decay_rate = get_prediction_decay_rate ( & cpi -> common , & next_frame ) ; <S2SV_EndBug> decay_accumulator = decay_accumulator * loop_decay_rate ; <S2SV_StartBug> if ( ( next_frame . pcnt_inter - next_frame . pcnt_motion ) < <S2SV_EndBug> zero_motion_accumulator ) { zero_motion_accumulator = next_frame . pcnt_inter - next_frame . pcnt_motion ; } <S2SV_StartBug> if ( detect_transition_to_still ( twopass , i , 5 , loop_decay_rate , <S2SV_EndBug> last_loop_decay_rate ) ) { allow_alt_ref = 0 ; break ; } } <S2SV_StartBug> boost_score += ( decay_accumulator * <S2SV_EndBug> <S2SV_StartBug> calc_frame_boost ( cpi , & next_frame , this_frame_mv_in_out ) ) ; <S2SV_EndBug> if ( <S2SV_StartBug> ( i >= active_max_gf_interval && ( zero_motion_accumulator < 0.995 ) ) || <S2SV_EndBug> ( <S2SV_StartBug> ( i > MIN_GF_INTERVAL ) && <S2SV_EndBug> ( ( boost_score > 125.0 ) || ( next_frame . pcnt_inter < 0.75 ) ) && ( ! flash_detected ) && ( ( mv_ratio_accumulator > mv_ratio_accumulator_thresh ) || ( abs_mv_in_out_accumulator > 3.0 ) || ( mv_in_out_accumulator < - 2.0 ) || <S2SV_StartBug> ( ( boost_score - old_boost_score ) < IIFACTOR ) ) ) ) { <S2SV_EndBug> boost_score = old_boost_score ; break ; } * this_frame = next_frame ; old_boost_score = boost_score ; } twopass -> gf_zeromotion_pct = ( int ) ( zero_motion_accumulator * 1000.0 ) ; <S2SV_StartBug> if ( ( rc -> frames_to_key - i ) < MIN_GF_INTERVAL ) { <S2SV_EndBug> <S2SV_StartBug> while ( i < ( rc -> frames_to_key + ! rc -> next_key_frame_forced ) ) { <S2SV_EndBug> ++ i ; if ( EOF == input_stats ( twopass , this_frame ) ) break ; <S2SV_StartBug> if ( i < rc -> frames_to_key ) { <S2SV_EndBug> mod_frame_err = calculate_modified_err ( cpi , this_frame ) ; gf_group_err += mod_frame_err ; } } } # if CONFIG_MULTIPLE_ARF if ( cpi -> multi_arf_enabled ) { cpi -> new_frame_coding_order_period = 0 ; cpi -> next_frame_in_order = 0 ; cpi -> arf_buffered = 0 ; vp9_zero ( cpi -> frame_coding_order ) ; vp9_zero ( cpi -> arf_buffer_idx ) ; vpx_memset ( cpi -> arf_weight , - 1 , sizeof ( cpi -> arf_weight ) ) ; } # endif if ( cpi -> common . frame_type == KEY_FRAME || rc -> source_alt_ref_active ) <S2SV_StartBug> rc -> baseline_gf_interval = i - 1 ; <S2SV_EndBug> else <S2SV_StartBug> rc -> baseline_gf_interval = i ; <S2SV_EndBug> if ( allow_alt_ref && <S2SV_StartBug> ( i < cpi -> oxcf . lag_in_frames ) && <S2SV_EndBug> ( i >= MIN_GF_INTERVAL ) && ( rc -> next_key_frame_forced || ( i <= ( rc -> frames_to_key - MIN_GF_INTERVAL ) ) ) ) { rc -> gfu_boost = calc_arf_boost ( cpi , 0 , ( i - 1 ) , ( i - 1 ) , & f_boost , & b_boost ) ; rc -> source_alt_ref_pending = 1 ; # if CONFIG_MULTIPLE_ARF if ( cpi -> multi_arf_enabled ) { schedule_frames ( cpi , 0 , - ( rc -> baseline_gf_interval - 1 ) , 2 , 1 , 0 ) ; } # endif <S2SV_StartBug> } else { <S2SV_EndBug> rc -> gfu_boost = ( int ) boost_score ; rc -> source_alt_ref_pending = 0 ; # if CONFIG_MULTIPLE_ARF if ( cpi -> multi_arf_enabled ) { schedule_frames ( cpi , 0 , rc -> baseline_gf_interval - 1 , 2 , 0 , 0 ) ; assert ( cpi -> new_frame_coding_order_period == rc -> baseline_gf_interval ) ; } # endif } # if CONFIG_MULTIPLE_ARF <S2SV_StartBug> if ( cpi -> multi_arf_enabled && ( cpi -> common . frame_type != KEY_FRAME ) ) { <S2SV_EndBug> int max_level = INT_MIN ; for ( i = 0 ; i < cpi -> frame_coding_order_period ; ++ i ) { if ( cpi -> arf_weight [ i ] > max_level ) { max_level = cpi -> arf_weight [ i ] ; } } ++ max_level ; for ( i = 0 ; i < cpi -> frame_coding_order_period ; ++ i ) { if ( cpi -> arf_weight [ i ] == - 1 ) { cpi -> arf_weight [ i ] = max_level ; } } cpi -> max_arf_level = max_level ; } # if 0 if ( cpi -> multi_arf_enabled ) { printf ( \"\\\\nSchedule:<S2SV_blank>\" ) ; for ( i = 0 ; i < cpi -> new_frame_coding_order_period ; ++ i ) { printf ( \"%4d<S2SV_blank>\" , cpi -> frame_coding_order [ i ] ) ; } printf ( \"\\\\n\" ) ; printf ( \"ARFref:<S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; for ( i = 0 ; i < cpi -> new_frame_coding_order_period ; ++ i ) { printf ( \"%4d<S2SV_blank>\" , cpi -> arf_buffer_idx [ i ] ) ; } printf ( \"\\\\n\" ) ; printf ( \"Weight:<S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; for ( i = 0 ; i < cpi -> new_frame_coding_order_period ; ++ i ) { printf ( \"%4d<S2SV_blank>\" , cpi -> arf_weight [ i ] ) ; } printf ( \"\\\\n\" ) ; } # endif # endif if ( twopass -> kf_group_bits > 0 && twopass -> kf_group_error_left > 0 ) { twopass -> gf_group_bits = ( int64_t ) ( twopass -> kf_group_bits * ( gf_group_err / twopass -> kf_group_error_left ) ) ; } else { twopass -> gf_group_bits = 0 ; } twopass -> gf_group_bits = ( twopass -> gf_group_bits < 0 ) ? 0 : ( twopass -> gf_group_bits > twopass -> kf_group_bits ) ? twopass -> kf_group_bits : twopass -> gf_group_bits ; if ( twopass -> gf_group_bits > ( int64_t ) max_bits * rc -> baseline_gf_interval ) twopass -> gf_group_bits = ( int64_t ) max_bits * rc -> baseline_gf_interval ; reset_fpf_position ( twopass , start_pos ) ; for ( i = 0 ; i <= ( rc -> source_alt_ref_pending && cpi -> common . frame_type != KEY_FRAME ) ; ++ i ) { int allocation_chunks ; int q = rc -> last_q [ INTER_FRAME ] ; int gf_bits ; int boost = ( rc -> gfu_boost * gfboost_qadjust ( q ) ) / 100 ; boost = clamp ( boost , 125 , ( rc -> baseline_gf_interval + 1 ) * 200 ) ; if ( rc -> source_alt_ref_pending && i == 0 ) allocation_chunks = ( ( rc -> baseline_gf_interval + 1 ) * 100 ) + boost ; else allocation_chunks = ( rc -> baseline_gf_interval * 100 ) + ( boost - 100 ) ; if ( boost > 1023 ) { int divisor = boost >> 10 ; boost /= divisor ; allocation_chunks /= divisor ; } gf_bits = ( int ) ( ( double ) boost * ( twopass -> gf_group_bits / ( double ) allocation_chunks ) ) ; if ( rc -> baseline_gf_interval < 1 || mod_frame_err < gf_group_err / ( double ) rc -> baseline_gf_interval ) { double alt_gf_grp_bits = ( double ) twopass -> kf_group_bits * ( mod_frame_err * ( double ) rc -> baseline_gf_interval ) / DOUBLE_DIVIDE_CHECK ( twopass -> kf_group_error_left ) ; int alt_gf_bits = ( int ) ( ( double ) boost * ( alt_gf_grp_bits / ( double ) allocation_chunks ) ) ; if ( gf_bits > alt_gf_bits ) gf_bits = alt_gf_bits ; } else { int alt_gf_bits = ( int ) ( ( double ) twopass -> kf_group_bits * mod_frame_err / DOUBLE_DIVIDE_CHECK ( twopass -> kf_group_error_left ) ) ; if ( alt_gf_bits > gf_bits ) gf_bits = alt_gf_bits ; } if ( gf_bits < 0 ) gf_bits = 0 ; if ( i == 0 ) { twopass -> gf_bits = gf_bits ; } if ( i == 1 || ( ! rc -> source_alt_ref_pending && cpi -> common . frame_type != KEY_FRAME ) ) { vp9_rc_set_frame_target ( cpi , gf_bits ) ; } } { twopass -> kf_group_error_left -= ( int64_t ) gf_group_err ; if ( rc -> source_alt_ref_pending ) { twopass -> gf_group_error_left = ( int64_t ) ( gf_group_err - mod_frame_err ) ; } else if ( cpi -> common . frame_type != KEY_FRAME ) { twopass -> gf_group_error_left = ( int64_t ) ( gf_group_err - gf_first_frame_err ) ; } else { twopass -> gf_group_error_left = ( int64_t ) gf_group_err ; } if ( rc -> baseline_gf_interval >= 3 ) { const int boost = rc -> source_alt_ref_pending ? b_boost : rc -> gfu_boost ; if ( boost >= 150 ) { const int pct_extra = MIN ( 20 , ( boost - 100 ) / 50 ) ; const int alt_extra_bits = ( int ) ( ( MAX ( twopass -> gf_group_bits - twopass -> gf_bits , 0 ) * pct_extra ) / 100 ) ; twopass -> gf_group_bits -= alt_extra_bits ; } } } if ( cpi -> common . frame_type != KEY_FRAME ) { FIRSTPASS_STATS sectionstats ; zero_stats ( & sectionstats ) ; reset_fpf_position ( twopass , start_pos ) ; for ( i = 0 ; i < rc -> baseline_gf_interval ; ++ i ) { input_stats ( twopass , & next_frame ) ; accumulate_stats ( & sectionstats , & next_frame ) ; } avg_stats ( & sectionstats ) ; twopass -> section_intra_rating = ( int ) ( sectionstats . intra_error / DOUBLE_DIVIDE_CHECK ( sectionstats . coded_error ) ) ; reset_fpf_position ( twopass , start_pos ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> this_frame ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_ModStart> -> rc ; VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> -> oxcf ; TWO_PASS <S2SV_ModEnd> * const twopass <S2SV_ModStart> ; FIRSTPASS_STATS next_frame <S2SV_ModEnd> ; const FIRSTPASS_STATS <S2SV_ModStart> const FIRSTPASS_STATS * const start_pos = twopass -> stats_in <S2SV_ModEnd> ; int i <S2SV_ModStart> = 0.0 ; # if GROUP_ADAPTIVE_MAXQ double gf_group_raw_error = 0.0 ; # endif double gf_group_skip_pct = 0.0 ; double gf_group_inactive_zone_rows = 0.0 ; <S2SV_ModStart> double mv_ratio_accumulator_thresh ; unsigned int allow_alt_ref = is_altref_enabled ( cpi ) ; int f_boost = 0 ; int b_boost = 0 ; int flash_detected ; int active_max_gf_interval ; int active_min_gf_interval ; int64_t gf_group_bits ; double gf_group_error_left ; int gf_arf_bits ; const int is_key_frame = frame_is_intra_only ( cm ) ; const int arf_active_or_kf = is_key_frame || rc -> source_alt_ref_active ; if ( is_key_frame == 0 ) { vp9_zero ( twopass -> gf_group ) ; } vpx_clear_system_state ( ) ; vp9_zero ( next_frame ) ; mod_frame_err = calculate_modified_err ( cpi , twopass , oxcf , this_frame ) ; gf_first_frame_err = mod_frame_err ; if ( arf_active_or_kf ) { <S2SV_ModEnd> gf_group_err -= gf_first_frame_err <S2SV_ModStart> -= gf_first_frame_err ; # if GROUP_ADAPTIVE_MAXQ gf_group_raw_error -= this_frame -> coded_error ; # endif gf_group_skip_pct -= this_frame -> intra_skip_pct ; gf_group_inactive_zone_rows -= this_frame -> inactive_zone_rows ; } mv_ratio_accumulator_thresh = ( cpi -> initial_height + cpi -> initial_width ) / 4.0 ; { int int_max_q = ( int ) ( vp9_convert_qindex_to_q ( twopass -> active_worst_quality , <S2SV_ModEnd> cpi -> common <S2SV_ModStart> -> common . bit_depth ) ) ; int int_lbq = ( int ) ( vp9_convert_qindex_to_q ( rc -> last_boosted_qindex , <S2SV_ModEnd> cpi -> common <S2SV_ModStart> -> common . bit_depth ) ) ; active_min_gf_interval = rc -> min_gf_interval + MIN ( 2 , int_max_q / 200 ) ; if ( active_min_gf_interval > rc -> max_gf_interval ) active_min_gf_interval = rc -> max_gf_interval ; if ( cpi -> multi_arf_allowed ) { active_max_gf_interval = rc -> max_gf_interval ; } else { active_max_gf_interval = 12 + MIN ( 4 , ( int_lbq / 6 ) ) ; if ( active_max_gf_interval < active_min_gf_interval ) active_max_gf_interval = active_min_gf_interval <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> max_gf_interval ; if ( active_max_gf_interval < active_min_gf_interval ) active_max_gf_interval = active_min_gf_interval ; } } <S2SV_ModStart> ( cpi , twopass , oxcf , <S2SV_ModStart> += mod_frame_err ; # if GROUP_ADAPTIVE_MAXQ gf_group_raw_error += this_frame -> coded_error ; # endif gf_group_skip_pct += this_frame -> intra_skip_pct ; gf_group_inactive_zone_rows += this_frame -> inactive_zone_rows ; <S2SV_ModStart> = get_prediction_decay_rate ( cpi <S2SV_ModEnd> , & next_frame <S2SV_ModStart> * loop_decay_rate ; zero_motion_accumulator = MIN ( zero_motion_accumulator , get_zero_motion_factor ( cpi , & next_frame ) ) ; <S2SV_ModEnd> if ( detect_transition_to_still <S2SV_ModStart> ( detect_transition_to_still ( cpi <S2SV_ModEnd> , i , <S2SV_ModStart> } boost_score += <S2SV_ModEnd> decay_accumulator * calc_frame_boost <S2SV_ModStart> next_frame , this_frame_mv_in_out , GF_MAX_BOOST <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( i >= ( active_max_gf_interval + arf_active_or_kf ) && <S2SV_ModEnd> zero_motion_accumulator < 0.995 <S2SV_ModStart> < 0.995 ) <S2SV_ModEnd> || ( ( <S2SV_ModStart> ( ( i >= active_min_gf_interval + arf_active_or_kf <S2SV_ModEnd> ) && ( <S2SV_ModStart> old_boost_score ) < BOOST_BREAKOUT <S2SV_ModEnd> ) ) ) <S2SV_ModStart> 1000.0 ) ; rc -> constrained_gf_group = ( i >= <S2SV_ModEnd> rc -> frames_to_key <S2SV_ModStart> rc -> frames_to_key ) ? 1 : 0 ; if ( allow_alt_ref && <S2SV_ModEnd> ( i < <S2SV_ModStart> ( i < cpi -> oxcf . lag_in_frames ) && ( i >= rc -> min_gf_interval ) ) { rc -> gfu_boost = calc_arf_boost ( cpi , 0 , ( i - 1 ) , ( i - 1 ) , & f_boost , & b_boost ) ; rc -> source_alt_ref_pending = 1 ; cpi -> multi_arf_enabled = ( cpi -> multi_arf_allowed && ( rc -> baseline_gf_interval >= 6 ) && ( zero_motion_accumulator < 0.995 ) ) ? 1 : 0 ; } else { rc -> gfu_boost = MAX ( ( int ) boost_score , MIN_ARF_GF_BOOST ) ; rc -> source_alt_ref_pending = 0 ; } rc -> baseline_gf_interval = i - ( is_key_frame || rc -> source_alt_ref_pending ) ; if ( is_two_pass_svc ( cpi ) && cpi -> svc . number_temporal_layers > 1 ) { int count = ( 1 << ( cpi -> svc . number_temporal_layers - 1 ) ) - 1 ; int new_gf_interval = ( rc -> baseline_gf_interval + count ) & ( ~ count ) ; int j ; for ( j = 0 ; j < new_gf_interval - rc -> baseline_gf_interval ; ++ j ) { <S2SV_ModEnd> if ( EOF <S2SV_ModStart> ) break ; gf_group_err += calculate_modified_err ( cpi , twopass , oxcf , this_frame ) ; # if GROUP_ADAPTIVE_MAXQ gf_group_raw_error += this_frame -> coded_error ; # endif gf_group_skip_pct += this_frame -> intra_skip_pct ; gf_group_inactive_zone_rows += this_frame -> inactive_zone_rows ; } <S2SV_ModEnd> rc -> baseline_gf_interval <S2SV_ModStart> -> baseline_gf_interval = new_gf_interval ; } rc -> frames_till_gf_update_due = <S2SV_ModEnd> rc -> baseline_gf_interval <S2SV_ModStart> rc -> baseline_gf_interval ; reset_fpf_position ( twopass , start_pos ) ; gf_group_bits = calculate_total_gf_group_bits ( cpi , gf_group_err ) ; # if GROUP_ADAPTIVE_MAXQ if ( ( <S2SV_ModEnd> cpi -> oxcf <S2SV_ModStart> -> oxcf . rc_mode != VPX_Q ) && ( rc -> baseline_gf_interval > 1 ) ) { const int vbr_group_bits_per_frame = ( int ) ( gf_group_bits / rc -> baseline_gf_interval ) ; const double group_av_err = gf_group_raw_error / rc -> baseline_gf_interval ; const double group_av_skip_pct = gf_group_skip_pct / rc -> baseline_gf_interval ; const double group_av_inactive_zone = ( ( gf_group_inactive_zone_rows * 2 ) / ( rc -> baseline_gf_interval * ( double ) cm -> mb_rows ) ) ; int tmp_q ; double rc_factor = 1.0 ; if ( rc -> rate_error_estimate > 0 ) { rc_factor = MAX ( RC_FACTOR_MIN , ( double ) ( 100 - rc -> rate_error_estimate ) / 100.0 ) ; } else { rc_factor = MIN ( RC_FACTOR_MAX , ( double ) ( 100 - rc -> rate_error_estimate ) / 100.0 ) ; } tmp_q = get_twopass_worst_quality ( cpi , group_av_err , ( group_av_skip_pct + group_av_inactive_zone ) , vbr_group_bits_per_frame , twopass -> kfgroup_inter_fraction * rc_factor ) ; twopass -> active_worst_quality = MAX ( tmp_q , twopass -> active_worst_quality >> 1 <S2SV_ModEnd> ) ; } <S2SV_ModStart> } # endif gf_arf_bits = calculate_boost_bits ( rc -> baseline_gf_interval , rc -> gfu_boost , gf_group_bits ) ; twopass -> kf_group_error_left -= ( int64_t ) gf_group_err ; if ( rc -> source_alt_ref_pending ) { gf_group_error_left = gf_group_err - mod_frame_err ; } else if ( is_key_frame == 0 ) { gf_group_error_left = gf_group_err - gf_first_frame_err ; } else { gf_group_error_left = gf_group_err ; } allocate_gf_group_bits ( cpi , gf_group_bits , gf_group_error_left , gf_arf_bits ) ; reset_fpf_position ( twopass , start_pos ) ; if <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> != KEY_FRAME ) { twopass -> section_intra_rating = calculate_section_intra_ratio ( start_pos , twopass -> stats_in_end , rc -> baseline_gf_interval ) ; } if ( oxcf -> resize_mode == RESIZE_DYNAMIC ) { cpi -> rc . next_frame_size_selector = UNSCALED <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19081\n\n```\nCWE-401 static int nfp_flower_spawn_vnic_reprs ( struct nfp_app * app , enum nfp_flower_cmsg_port_vnic_type vnic_type , enum nfp_repr_type repr_type , unsigned int cnt ) { u8 nfp_pcie = nfp_cppcore_pcie_unit ( app -> pf -> cpp ) ; struct nfp_flower_priv * priv = app -> priv ; atomic_t * replies = & priv -> reify_replies ; struct nfp_flower_repr_priv * repr_priv ; enum nfp_port_type port_type ; struct nfp_repr * nfp_repr ; struct nfp_reprs * reprs ; int i , err , reify_cnt ; const u8 queue = 0 ; port_type = repr_type == NFP_REPR_TYPE_PF ? NFP_PORT_PF_PORT : NFP_PORT_VF_PORT ; reprs = nfp_reprs_alloc ( cnt ) ; if ( ! reprs ) return - ENOMEM ; for ( i = 0 ; i < cnt ; i ++ ) { struct net_device * repr ; struct nfp_port * port ; u32 port_id ; repr = nfp_repr_alloc ( app ) ; if ( ! repr ) { err = - ENOMEM ; goto err_reprs_clean ; } repr_priv = kzalloc ( sizeof ( * repr_priv ) , GFP_KERNEL ) ; if ( ! repr_priv ) { err = - ENOMEM ; <S2SV_StartBug> goto err_reprs_clean ; <S2SV_EndBug> } nfp_repr = netdev_priv ( repr ) ; nfp_repr -> app_priv = repr_priv ; repr_priv -> nfp_repr = nfp_repr ; WARN_ON ( repr_type == NFP_REPR_TYPE_PF && i ) ; port = nfp_port_alloc ( app , port_type , repr ) ; if ( IS_ERR ( port ) ) { err = PTR_ERR ( port ) ; <S2SV_StartBug> nfp_repr_free ( repr ) ; <S2SV_EndBug> goto err_reprs_clean ; } if ( repr_type == NFP_REPR_TYPE_PF ) { port -> pf_id = i ; port -> vnic = priv -> nn -> dp . ctrl_bar ; } else { port -> pf_id = 0 ; port -> vf_id = i ; port -> vnic = app -> pf -> vf_cfg_mem + i * NFP_NET_CFG_BAR_SZ ; } eth_hw_addr_random ( repr ) ; port_id = nfp_flower_cmsg_pcie_port ( nfp_pcie , vnic_type , i , queue ) ; err = nfp_repr_init ( app , repr , port_id , port , priv -> nn -> dp . netdev ) ; <S2SV_StartBug> if ( err ) { <S2SV_EndBug> nfp_port_free ( port ) ; nfp_repr_free ( repr ) ; goto err_reprs_clean ; } RCU_INIT_POINTER ( reprs -> reprs [ i ] , repr ) ; nfp_info ( app -> cpp , \"%s%d<S2SV_blank>Representor(%s)<S2SV_blank>created\\\\n\" , repr_type == NFP_REPR_TYPE_PF ? \"PF\" : \"VF\" , i , repr -> name ) ; } nfp_app_reprs_set ( app , repr_type , reprs ) ; atomic_set ( replies , 0 ) ; reify_cnt = nfp_flower_reprs_reify ( app , repr_type , true ) ; if ( reify_cnt < 0 ) { err = reify_cnt ; nfp_warn ( app -> cpp , \"Failed<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>firmware<S2SV_blank>about<S2SV_blank>repr<S2SV_blank>creation\\\\n\" ) ; goto err_reprs_remove ; } err = nfp_flower_wait_repr_reify ( app , replies , reify_cnt ) ; if ( err ) goto err_reprs_remove ; return 0 ; err_reprs_remove : reprs = nfp_app_reprs_set ( app , repr_type , NULL ) ; err_reprs_clean : nfp_reprs_clean_and_free ( app , reprs ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOMEM ; nfp_repr_free ( repr ) ; <S2SV_ModStart> port ) ; kfree ( repr_priv ) ; <S2SV_ModStart> err ) { kfree ( repr_priv ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4997\n\n```\nCWE-264 static int check_entry_size_and_hooks ( struct ipt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ipt_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct ipt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ipt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } if ( ! ip_checkentry ( & e -> ip ) ) return - EINVAL ; <S2SV_StartBug> err = xt_check_entry_offsets ( e , e -> target_offset , e -> next_offset ) ; <S2SV_EndBug> if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_debug ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , e -> elems , e ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8569\n\n```\nCWE-200 static int pptp_connect ( struct socket * sock , struct sockaddr * uservaddr , int sockaddr_len , int flags ) { struct sock * sk = sock -> sk ; struct sockaddr_pppox * sp = ( struct sockaddr_pppox * ) uservaddr ; struct pppox_sock * po = pppox_sk ( sk ) ; struct pptp_opt * opt = & po -> proto . pptp ; struct rtable * rt ; struct flowi4 fl4 ; int error = 0 ; <S2SV_StartBug> if ( sp -> sa_protocol != PX_PROTO_PPTP ) <S2SV_EndBug> return - EINVAL ; if ( lookup_chan_dst ( sp -> sa_addr . pptp . call_id , sp -> sa_addr . pptp . sin_addr . s_addr ) ) return - EALREADY ; lock_sock ( sk ) ; if ( sk -> sk_state & PPPOX_CONNECTED ) { error = - EBUSY ; goto end ; } if ( sk -> sk_state & PPPOX_DEAD ) { error = - EALREADY ; goto end ; } if ( ! opt -> src_addr . sin_addr . s_addr || ! sp -> sa_addr . pptp . sin_addr . s_addr ) { error = - EINVAL ; goto end ; } po -> chan . private = sk ; po -> chan . ops = & pptp_chan_ops ; rt = ip_route_output_ports ( sock_net ( sk ) , & fl4 , sk , opt -> dst_addr . sin_addr . s_addr , opt -> src_addr . sin_addr . s_addr , 0 , 0 , IPPROTO_GRE , RT_CONN_FLAGS ( sk ) , 0 ) ; if ( IS_ERR ( rt ) ) { error = - EHOSTUNREACH ; goto end ; } sk_setup_caps ( sk , & rt -> dst ) ; po -> chan . mtu = dst_mtu ( & rt -> dst ) ; if ( ! po -> chan . mtu ) po -> chan . mtu = PPP_MRU ; ip_rt_put ( rt ) ; po -> chan . mtu -= PPTP_HEADER_OVERHEAD ; po -> chan . hdrlen = 2 + sizeof ( struct pptp_gre_header ) ; error = ppp_register_channel ( & po -> chan ) ; if ( error ) { pr_err ( \"PPTP:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>register<S2SV_blank>PPP<S2SV_blank>channel<S2SV_blank>(%d)\\\\n\" , error ) ; goto end ; } opt -> dst_addr = sp -> sa_addr . pptp ; sk -> sk_state = PPPOX_CONNECTED ; end : release_sock ( sk ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( sockaddr_len < sizeof ( struct sockaddr_pppox ) ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0216\n\n```\nCWE-20 static unsigned xen_netbk_tx_build_gops ( struct xen_netbk * netbk ) { struct gnttab_copy * gop = netbk -> tx_copy_ops , * request_gop ; struct sk_buff * skb ; int ret ; while ( ( ( nr_pending_reqs ( netbk ) + MAX_SKB_FRAGS ) < MAX_PENDING_REQS ) && ! list_empty ( & netbk -> net_schedule_list ) ) { struct xenvif * vif ; struct xen_netif_tx_request txreq ; struct xen_netif_tx_request txfrags [ MAX_SKB_FRAGS ] ; struct page * page ; struct xen_netif_extra_info extras [ XEN_NETIF_EXTRA_TYPE_MAX - 1 ] ; u16 pending_idx ; RING_IDX idx ; int work_to_do ; unsigned int data_len ; pending_ring_idx_t index ; vif = poll_net_schedule_list ( netbk ) ; if ( ! vif ) continue ; <S2SV_StartBug> RING_FINAL_CHECK_FOR_REQUESTS ( & vif -> tx , work_to_do ) ; <S2SV_EndBug> if ( ! work_to_do ) { xenvif_put ( vif ) ; continue ; } idx = vif -> tx . req_cons ; rmb ( ) ; memcpy ( & txreq , RING_GET_REQUEST ( & vif -> tx , idx ) , sizeof ( txreq ) ) ; if ( txreq . size > vif -> remaining_credit && tx_credit_exceeded ( vif , txreq . size ) ) { xenvif_put ( vif ) ; continue ; } vif -> remaining_credit -= txreq . size ; work_to_do -- ; vif -> tx . req_cons = ++ idx ; memset ( extras , 0 , sizeof ( extras ) ) ; if ( txreq . flags & XEN_NETTXF_extra_info ) { work_to_do = xen_netbk_get_extras ( vif , extras , work_to_do ) ; idx = vif -> tx . req_cons ; <S2SV_StartBug> if ( unlikely ( work_to_do < 0 ) ) { <S2SV_EndBug> netbk_tx_err ( vif , & txreq , idx ) ; continue ; } } ret = netbk_count_requests ( vif , & txreq , txfrags , work_to_do ) ; <S2SV_StartBug> if ( unlikely ( ret < 0 ) ) { <S2SV_EndBug> netbk_tx_err ( vif , & txreq , idx - ret ) ; continue ; } idx += ret ; if ( unlikely ( txreq . size < ETH_HLEN ) ) { netdev_dbg ( vif -> dev , \"Bad<S2SV_blank>packet<S2SV_blank>size:<S2SV_blank>%d\\\\n\" , txreq . size ) ; netbk_tx_err ( vif , & txreq , idx ) ; continue ; } if ( unlikely ( ( txreq . offset + txreq . size ) > PAGE_SIZE ) ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , <S2SV_EndBug> \"txreq.offset:<S2SV_blank>%x,<S2SV_blank>size:<S2SV_blank>%u,<S2SV_blank>end:<S2SV_blank>%lu\\\\n\" , txreq . offset , txreq . size , ( txreq . offset & ~ PAGE_MASK ) + txreq . size ) ; <S2SV_StartBug> netbk_tx_err ( vif , & txreq , idx ) ; <S2SV_EndBug> continue ; } index = pending_index ( netbk -> pending_cons ) ; pending_idx = netbk -> pending_ring [ index ] ; data_len = ( txreq . size > PKT_PROT_LEN && ret < MAX_SKB_FRAGS ) ? PKT_PROT_LEN : txreq . size ; skb = alloc_skb ( data_len + NET_SKB_PAD + NET_IP_ALIGN , GFP_ATOMIC | __GFP_NOWARN ) ; if ( unlikely ( skb == NULL ) ) { netdev_dbg ( vif -> dev , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>a<S2SV_blank>skb<S2SV_blank>in<S2SV_blank>start_xmit.\\\\n\" ) ; netbk_tx_err ( vif , & txreq , idx ) ; break ; } skb_reserve ( skb , NET_SKB_PAD + NET_IP_ALIGN ) ; if ( extras [ XEN_NETIF_EXTRA_TYPE_GSO - 1 ] . type ) { struct xen_netif_extra_info * gso ; gso = & extras [ XEN_NETIF_EXTRA_TYPE_GSO - 1 ] ; if ( netbk_set_skb_gso ( vif , skb , gso ) ) { kfree_skb ( skb ) ; <S2SV_StartBug> netbk_tx_err ( vif , & txreq , idx ) ; <S2SV_EndBug> continue ; } } page = xen_netbk_alloc_page ( netbk , skb , pending_idx ) ; if ( ! page ) { kfree_skb ( skb ) ; netbk_tx_err ( vif , & txreq , idx ) ; continue ; } gop -> source . u . ref = txreq . gref ; gop -> source . domid = vif -> domid ; gop -> source . offset = txreq . offset ; gop -> dest . u . gmfn = virt_to_mfn ( page_address ( page ) ) ; gop -> dest . domid = DOMID_SELF ; gop -> dest . offset = txreq . offset ; gop -> len = txreq . size ; gop -> flags = GNTCOPY_source_gref ; gop ++ ; memcpy ( & netbk -> pending_tx_info [ pending_idx ] . req , & txreq , sizeof ( txreq ) ) ; netbk -> pending_tx_info [ pending_idx ] . vif = vif ; * ( ( u16 * ) skb -> data ) = pending_idx ; __skb_put ( skb , data_len ) ; skb_shinfo ( skb ) -> nr_frags = ret ; if ( data_len < txreq . size ) { skb_shinfo ( skb ) -> nr_frags ++ ; frag_set_pending_idx ( & skb_shinfo ( skb ) -> frags [ 0 ] , pending_idx ) ; } else { frag_set_pending_idx ( & skb_shinfo ( skb ) -> frags [ 0 ] , INVALID_PENDING_IDX ) ; } netbk -> pending_cons ++ ; request_gop = xen_netbk_get_requests ( netbk , vif , skb , txfrags , gop ) ; if ( request_gop == NULL ) { kfree_skb ( skb ) ; netbk_tx_err ( vif , & txreq , idx ) ; continue ; } gop = request_gop ; __skb_queue_tail ( & netbk -> tx_queue , skb ) ; vif -> tx . req_cons = idx ; xen_netbk_check_rx_xenvif ( vif ) ; if ( ( gop - netbk -> tx_copy_ops ) >= ARRAY_SIZE ( netbk -> tx_copy_ops ) ) break ; } return gop - netbk -> tx_copy_ops ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) continue ; if ( vif -> tx . sring -> req_prod - vif -> tx . req_cons > XEN_NETIF_TX_RING_SIZE ) { netdev_err ( vif -> dev , \"Impossible<S2SV_blank>number<S2SV_blank>of<S2SV_blank>requests.<S2SV_blank>\" \"req_prod<S2SV_blank>%d,<S2SV_blank>req_cons<S2SV_blank>%d,<S2SV_blank>size<S2SV_blank>%ld\\\\n\" , vif -> tx . sring -> req_prod , vif -> tx . req_cons , XEN_NETIF_TX_RING_SIZE ) ; netbk_fatal_tx_err ( vif ) ; continue ; } <S2SV_ModStart> 0 ) ) continue ; <S2SV_ModEnd> } ret = <S2SV_ModStart> 0 ) ) continue ; <S2SV_ModEnd> idx += ret <S2SV_ModStart> ) ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> size ) ; netbk_fatal_tx_err ( vif <S2SV_ModEnd> ) ; continue <S2SV_ModStart> skb ) ; <S2SV_ModEnd> continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6516\n\n```\nCWE-119 static long ioctl_file_dedupe_range ( struct file * file , void __user * arg ) { struct file_dedupe_range __user * argp = arg ; struct file_dedupe_range * same = NULL ; int ret ; unsigned long size ; u16 count ; if ( get_user ( count , & argp -> dest_count ) ) { ret = - EFAULT ; goto out ; } size = offsetof ( struct file_dedupe_range __user , info [ count ] ) ; same = memdup_user ( argp , size ) ; if ( IS_ERR ( same ) ) { ret = PTR_ERR ( same ) ; same = NULL ; goto out ; } <S2SV_StartBug> ret = vfs_dedupe_file_range ( file , same ) ; <S2SV_EndBug> if ( ret ) goto out ; ret = copy_to_user ( argp , same , size ) ; if ( ret ) ret = - EFAULT ; out : kfree ( same ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ; } same -> dest_count = count ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-601(开放重定向)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3877\n\n```\nCWE-601 int am_check_url ( request_rec * r , const char * url ) { const char * i ; for ( i = url ; * i ; i ++ ) { if ( * i >= 0 && * i < '<S2SV_blank>' ) { AM_LOG_RERROR ( APLOG_MARK , APLOG_ERR , HTTP_BAD_REQUEST , r , \"Control<S2SV_blank>character<S2SV_blank>detected<S2SV_blank>in<S2SV_blank>URL.\" ) ; return HTTP_BAD_REQUEST ; } <S2SV_StartBug> } <S2SV_EndBug> return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> HTTP_BAD_REQUEST ; } if ( * i == '\\\\\\\\' ) { AM_LOG_RERROR ( APLOG_MARK , APLOG_ERR , HTTP_BAD_REQUEST , r , \"Backslash<S2SV_blank>character<S2SV_blank>detected<S2SV_blank>in<S2SV_blank>URL.\" ) ; return HTTP_BAD_REQUEST ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1191\n\n```\nCWE-22 local void process ( char * path ) { int method = - 1 ; size_t len ; struct stat st ; static char * sufs [ ] = { \".z\" , \"-z\" , \"_z\" , \".Z\" , \".gz\" , \"-gz\" , \".zz\" , \"-zz\" , \".zip\" , \".ZIP\" , \".tgz\" , NULL } ; if ( path == NULL ) { strcpy ( g . inf , \"<stdin>\" ) ; g . ind = 0 ; g . name = NULL ; g . mtime = g . headis & 2 ? ( fstat ( g . ind , & st ) ? time ( NULL ) : st . st_mtime ) : 0 ; len = 0 ; } else { if ( path != g . inf ) { strncpy ( g . inf , path , sizeof ( g . inf ) ) ; if ( g . inf [ sizeof ( g . inf ) - 1 ] ) bail ( \"name<S2SV_blank>too<S2SV_blank>long:<S2SV_blank>\" , path ) ; } len = strlen ( g . inf ) ; if ( lstat ( g . inf , & st ) ) { if ( errno == ENOENT && ( g . list || g . decode ) ) { char * * try = sufs ; do { if ( * try == NULL || len + strlen ( * try ) >= sizeof ( g . inf ) ) break ; strcpy ( g . inf + len , * try ++ ) ; errno = 0 ; } while ( lstat ( g . inf , & st ) && errno == ENOENT ) ; } # ifdef EOVERFLOW if ( errno == EOVERFLOW || errno == EFBIG ) bail ( g . inf , \"<S2SV_blank>too<S2SV_blank>large<S2SV_blank>--<S2SV_blank>not<S2SV_blank>compiled<S2SV_blank>with<S2SV_blank>large<S2SV_blank>file<S2SV_blank>support\" ) ; # endif if ( errno ) { g . inf [ len ] = 0 ; complain ( \"%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist<S2SV_blank>--<S2SV_blank>skipping\" , g . inf ) ; return ; } len = strlen ( g . inf ) ; } if ( ( st . st_mode & S_IFMT ) != S_IFREG && ( st . st_mode & S_IFMT ) != S_IFLNK && ( st . st_mode & S_IFMT ) != S_IFDIR ) { complain ( \"%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>special<S2SV_blank>file<S2SV_blank>or<S2SV_blank>device<S2SV_blank>--<S2SV_blank>skipping\" , g . inf ) ; return ; } if ( ( st . st_mode & S_IFMT ) == S_IFLNK && ! g . force && ! g . pipeout ) { complain ( \"%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symbolic<S2SV_blank>link<S2SV_blank>--<S2SV_blank>skipping\" , g . inf ) ; return ; } if ( ( st . st_mode & S_IFMT ) == S_IFDIR && ! g . recurse ) { complain ( \"%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>directory<S2SV_blank>--<S2SV_blank>skipping\" , g . inf ) ; return ; } if ( ( st . st_mode & S_IFMT ) == S_IFDIR ) { char * roll , * item , * cut , * base , * bigger ; size_t len , hold ; DIR * here ; struct dirent * next ; here = opendir ( g . inf ) ; if ( here == NULL ) return ; hold = 512 ; roll = MALLOC ( hold ) ; if ( roll == NULL ) bail ( \"not<S2SV_blank>enough<S2SV_blank>memory\" , \"\" ) ; * roll = 0 ; item = roll ; while ( ( next = readdir ( here ) ) != NULL ) { if ( next -> d_name [ 0 ] == 0 || ( next -> d_name [ 0 ] == '.' && ( next -> d_name [ 1 ] == 0 || ( next -> d_name [ 1 ] == '.' && next -> d_name [ 2 ] == 0 ) ) ) ) continue ; len = strlen ( next -> d_name ) + 1 ; if ( item + len + 1 > roll + hold ) { do { hold <<= 1 ; } while ( item + len + 1 > roll + hold ) ; bigger = REALLOC ( roll , hold ) ; if ( bigger == NULL ) { FREE ( roll ) ; bail ( \"not<S2SV_blank>enough<S2SV_blank>memory\" , \"\" ) ; } item = bigger + ( item - roll ) ; roll = bigger ; } strcpy ( item , next -> d_name ) ; item += len ; * item = 0 ; } closedir ( here ) ; cut = base = g . inf + strlen ( g . inf ) ; if ( base > g . inf && base [ - 1 ] != ( unsigned char ) '/' ) { if ( ( size_t ) ( base - g . inf ) >= sizeof ( g . inf ) ) bail ( \"path<S2SV_blank>too<S2SV_blank>long\" , g . inf ) ; * base ++ = '/' ; } item = roll ; while ( * item ) { strncpy ( base , item , sizeof ( g . inf ) - ( base - g . inf ) ) ; if ( g . inf [ sizeof ( g . inf ) - 1 ] ) { strcpy ( g . inf + ( sizeof ( g . inf ) - 4 ) , \"...\" ) ; bail ( \"path<S2SV_blank>too<S2SV_blank>long:<S2SV_blank>\" , g . inf ) ; } process ( g . inf ) ; item += strlen ( item ) + 1 ; } * cut = 0 ; FREE ( roll ) ; return ; } if ( ! ( g . force || g . list || g . decode ) && len >= strlen ( g . sufx ) && strcmp ( g . inf + len - strlen ( g . sufx ) , g . sufx ) == 0 ) { complain ( \"%s<S2SV_blank>ends<S2SV_blank>with<S2SV_blank>%s<S2SV_blank>--<S2SV_blank>skipping\" , g . inf , g . sufx ) ; return ; } if ( g . decode == 1 && ! g . pipeout && ! g . list ) { int suf = compressed_suffix ( g . inf ) ; if ( suf == 0 ) { complain ( \"%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>compressed<S2SV_blank>suffix<S2SV_blank>--<S2SV_blank>skipping\" , g . inf ) ; return ; } len -= suf ; } g . ind = open ( g . inf , O_RDONLY , 0 ) ; if ( g . ind < 0 ) bail ( \"read<S2SV_blank>error<S2SV_blank>on<S2SV_blank>\" , g . inf ) ; g . name = g . headis & 1 ? justname ( g . inf ) : NULL ; g . mtime = g . headis & 2 ? st . st_mtime : 0 ; } SET_BINARY_MODE ( g . ind ) ; g . hname = NULL ; if ( g . decode ) { in_init ( ) ; method = get_header ( 1 ) ; if ( method != 8 && method != 257 && ! ( method == - 2 && g . force && g . pipeout && g . decode != 2 && ! g . list ) ) { RELEASE ( g . hname ) ; if ( g . ind != 0 ) close ( g . ind ) ; if ( method != - 1 ) complain ( method < 0 ? \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>compressed<S2SV_blank>--<S2SV_blank>skipping\" : \"%s<S2SV_blank>has<S2SV_blank>unknown<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>--<S2SV_blank>skipping\" , g . inf ) ; return ; } if ( g . decode == 2 ) { if ( method == 8 ) infchk ( ) ; else { unlzw ( ) ; if ( g . list ) { g . in_tot -= 3 ; show_info ( method , 0 , g . out_tot , 0 ) ; } } RELEASE ( g . hname ) ; if ( g . ind != 0 ) close ( g . ind ) ; return ; } } if ( g . list ) { list_info ( ) ; RELEASE ( g . hname ) ; if ( g . ind != 0 ) close ( g . ind ) ; return ; } if ( path == NULL || g . pipeout ) { g . outf = MALLOC ( strlen ( \"<stdout>\" ) + 1 ) ; if ( g . outf == NULL ) bail ( \"not<S2SV_blank>enough<S2SV_blank>memory\" , \"\" ) ; strcpy ( g . outf , \"<stdout>\" ) ; g . outd = 1 ; if ( ! g . decode && ! g . force && isatty ( g . outd ) ) bail ( \"trying<S2SV_blank>to<S2SV_blank>write<S2SV_blank>compressed<S2SV_blank>data<S2SV_blank>to<S2SV_blank>a<S2SV_blank>terminal\" , \"<S2SV_blank>(use<S2SV_blank>-f<S2SV_blank>to<S2SV_blank>force)\" ) ; } else { <S2SV_StartBug> char * to , * repl ; <S2SV_EndBug> to = g . inf ; <S2SV_StartBug> if ( g . decode && ( g . headis & 1 ) != 0 && g . hname != NULL ) { <S2SV_EndBug> <S2SV_StartBug> to = g . hname ; <S2SV_EndBug> <S2SV_StartBug> len = strlen ( g . hname ) ; <S2SV_EndBug> } <S2SV_StartBug> repl = g . decode && strcmp ( to + len , \".tgz\" ) ? \"\" : \".tar\" ; <S2SV_EndBug> <S2SV_StartBug> g . outf = MALLOC ( len + ( g . decode ? strlen ( repl ) : strlen ( g . sufx ) ) + 1 ) ; <S2SV_EndBug> if ( g . outf == NULL ) bail ( \"not<S2SV_blank>enough<S2SV_blank>memory\" , \"\" ) ; <S2SV_StartBug> memcpy ( g . outf , to , len ) ; <S2SV_EndBug> <S2SV_StartBug> strcpy ( g . outf + len , g . decode ? repl : g . sufx ) ; <S2SV_EndBug> g . outd = open ( g . outf , O_CREAT | O_TRUNC | O_WRONLY | ( g . force ? 0 : O_EXCL ) , 0600 ) ; if ( g . outd < 0 && errno == EEXIST && isatty ( 0 ) && g . verbosity ) { int ch , reply ; fprintf ( stderr , \"%s<S2SV_blank>exists<S2SV_blank>--<S2SV_blank>overwrite<S2SV_blank>(y/n)?<S2SV_blank>\" , g . outf ) ; fflush ( stderr ) ; reply = - 1 ; do { ch = getchar ( ) ; if ( reply < 0 && ch != '<S2SV_blank>' && ch != '\\\\t' ) reply = ch == 'y' || ch == 'Y' ? 1 : 0 ; } while ( ch != EOF && ch != '\\\\n' && ch != '\\\\r' ) ; if ( reply == 1 ) g . outd = open ( g . outf , O_CREAT | O_TRUNC | O_WRONLY , 0600 ) ; } if ( g . outd < 0 && errno == EEXIST ) { complain ( \"%s<S2SV_blank>exists<S2SV_blank>--<S2SV_blank>skipping\" , g . outf ) ; RELEASE ( g . outf ) ; RELEASE ( g . hname ) ; if ( g . ind != 0 ) close ( g . ind ) ; return ; } if ( g . outd < 0 ) bail ( \"write<S2SV_blank>error<S2SV_blank>on<S2SV_blank>\" , g . outf ) ; } SET_BINARY_MODE ( g . outd ) ; RELEASE ( g . hname ) ; if ( g . verbosity > 1 ) fprintf ( stderr , \"%s<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>\" , g . inf , g . outf ) ; if ( g . decode ) { if ( method == 8 ) infchk ( ) ; else if ( method == 257 ) unlzw ( ) ; else cat ( ) ; } # ifndef NOTHREAD else if ( g . procs > 1 ) parallel_compress ( ) ; # endif else single_compress ( 0 ) ; if ( g . verbosity > 1 ) { putc ( '\\\\n' , stderr ) ; fflush ( stderr ) ; } if ( g . ind != 0 ) close ( g . ind ) ; if ( g . outd != 1 ) { if ( close ( g . outd ) ) bail ( \"write<S2SV_blank>error<S2SV_blank>on<S2SV_blank>\" , g . outf ) ; g . outd = - 1 ; if ( g . ind != 0 ) { copymeta ( g . inf , g . outf ) ; if ( ! g . keep ) unlink ( g . inf ) ; } if ( g . decode && ( g . headis & 2 ) != 0 && g . stamp ) touch ( g . outf , g . stamp ) ; } RELEASE ( g . outf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * to = g . inf , * sufx = \"\" ; size_t pre = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> g . decode ) { if ( <S2SV_ModEnd> ( g . <S2SV_ModStart> NULL ) { pre = justname ( g . inf ) - g . inf ; to = justname ( <S2SV_ModEnd> g . hname <S2SV_ModStart> g . hname ) <S2SV_ModStart> = strlen ( to ) ; } else if ( <S2SV_ModEnd> strcmp ( to <S2SV_ModStart> , \".tgz\" ) == 0 ) sufx = \".tar\" ; } else sufx = g . sufx ; <S2SV_ModEnd> g . outf <S2SV_ModStart> = MALLOC ( pre + len + strlen ( sufx ) <S2SV_ModEnd> + 1 ) <S2SV_ModStart> . outf , g . inf , pre ) ; memcpy <S2SV_ModEnd> ( g . <S2SV_ModStart> . outf + pre , to , len ) ; strcpy ( g . outf + pre + len , <S2SV_ModEnd> sufx ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-310 static VALUE ossl_cipher_init ( int argc , VALUE * argv , VALUE self , int mode ) { EVP_CIPHER_CTX * ctx ; unsigned char key [ EVP_MAX_KEY_LENGTH ] , * p_key = NULL ; unsigned char iv [ EVP_MAX_IV_LENGTH ] , * p_iv = NULL ; VALUE pass , init_v ; if ( rb_scan_args ( argc , argv , \"02\" , & pass , & init_v ) > 0 ) { VALUE cname = rb_class_path ( rb_obj_class ( self ) ) ; rb_warn ( \"arguments<S2SV_blank>for<S2SV_blank>%\" PRIsVALUE \"#encrypt<S2SV_blank>and<S2SV_blank>%\" PRIsVALUE \"#decrypt<S2SV_blank>were<S2SV_blank>deprecated;<S2SV_blank>\" \"use<S2SV_blank>%\" PRIsVALUE \"#pkcs5_keyivgen<S2SV_blank>to<S2SV_blank>derive<S2SV_blank>key<S2SV_blank>and<S2SV_blank>IV\" , cname , cname , cname ) ; StringValue ( pass ) ; GetCipher ( self , ctx ) ; if ( NIL_P ( init_v ) ) memcpy ( iv , \"OpenSSL<S2SV_blank>for<S2SV_blank>Ruby<S2SV_blank>rulez!\" , sizeof ( iv ) ) ; else { StringValue ( init_v ) ; if ( EVP_MAX_IV_LENGTH > RSTRING_LEN ( init_v ) ) { memset ( iv , 0 , EVP_MAX_IV_LENGTH ) ; memcpy ( iv , RSTRING_PTR ( init_v ) , RSTRING_LEN ( init_v ) ) ; } else memcpy ( iv , RSTRING_PTR ( init_v ) , sizeof ( iv ) ) ; } EVP_BytesToKey ( EVP_CIPHER_CTX_cipher ( ctx ) , EVP_md5 ( ) , iv , ( unsigned char * ) RSTRING_PTR ( pass ) , RSTRING_LENINT ( pass ) , 1 , key , NULL ) ; p_key = key ; p_iv = iv ; } else { GetCipher ( self , ctx ) ; } if ( EVP_CipherInit_ex ( ctx , NULL , NULL , p_key , p_iv , mode ) != 1 ) { ossl_raise ( eCipherError , NULL ) ; } <S2SV_StartBug> return self ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( p_key ) rb_ivar_set ( self , id_key_set , Qtrue ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6763\n\n```\nCWE-119 static int uio_mmap_physical ( struct vm_area_struct * vma ) { struct uio_device * idev = vma -> vm_private_data ; int mi = uio_find_mem_index ( vma ) ; <S2SV_StartBug> if ( mi < 0 ) <S2SV_EndBug> return - EINVAL ; vma -> vm_ops = & uio_physical_vm_ops ; vma -> vm_page_prot = pgprot_noncached ( vma -> vm_page_prot ) ; return remap_pfn_range ( vma , vma -> vm_start , <S2SV_StartBug> idev -> info -> mem [ mi ] . addr >> PAGE_SHIFT , <S2SV_EndBug> vma -> vm_end - vma -> vm_start , vma -> vm_page_prot ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vma ) ; struct uio_mem * mem ; <S2SV_ModStart> mi < 0 ) return - EINVAL ; mem = idev -> info -> mem + mi ; if ( vma -> vm_end - vma -> vm_start > mem -> size <S2SV_ModStart> -> vm_start , mem -> <S2SV_ModEnd> addr >> PAGE_SHIFT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12110\n\n```\nCWE-476 int upnp_redirect ( const char * rhost , unsigned short eport , const char * iaddr , unsigned short iport , const char * protocol , const char * desc , unsigned int leaseduration ) { int proto , r ; char iaddr_old [ 32 ] ; char rhost_old [ 32 ] ; unsigned short iport_old ; struct in_addr address ; unsigned int timestamp ; proto = proto_atoi ( protocol ) ; if ( inet_aton ( iaddr , & address ) <= 0 ) { syslog ( LOG_ERR , \"inet_aton(%s)<S2SV_blank>FAILED\" , iaddr ) ; return - 1 ; } if ( ! check_upnp_rule_against_permissions ( upnppermlist , num_upnpperm , eport , address , iport ) ) { syslog ( LOG_INFO , \"redirection<S2SV_blank>permission<S2SV_blank>check<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>\" \"%hu->%s:%hu<S2SV_blank>%s\" , eport , iaddr , iport , protocol ) ; return - 3 ; } <S2SV_StartBug> rhost_old [ 0 ] = '\\\\0' ; <S2SV_EndBug> r = get_redirect_rule ( ext_if_name , eport , proto , iaddr_old , sizeof ( iaddr_old ) , & iport_old , 0 , 0 , rhost_old , sizeof ( rhost_old ) , & timestamp , 0 , 0 ) ; if ( r == 0 ) { if ( strcmp ( iaddr , iaddr_old ) == 0 && ( ( rhost == NULL && rhost_old [ 0 ] == '\\\\0' ) || ( rhost && ( strcmp ( rhost , \"*\" ) == 0 ) && rhost_old [ 0 ] == '\\\\0' ) || ( rhost && ( strcmp ( rhost , rhost_old ) == 0 ) ) ) ) { syslog ( LOG_INFO , \"updating<S2SV_blank>existing<S2SV_blank>port<S2SV_blank>mapping<S2SV_blank>%hu<S2SV_blank>%s<S2SV_blank>(rhost<S2SV_blank>\\'%s\\')<S2SV_blank>=><S2SV_blank>%s:%hu\" , eport , protocol , rhost_old , iaddr_old , iport_old ) ; timestamp = ( leaseduration > 0 ) ? upnp_time ( ) + leaseduration : 0 ; if ( iport != iport_old ) { r = update_portmapping ( ext_if_name , eport , proto , iport , desc , timestamp ) ; } else { r = update_portmapping_desc_timestamp ( ext_if_name , eport , proto , desc , timestamp ) ; } # ifdef ENABLE_LEASEFILE if ( r == 0 ) { lease_file_remove ( eport , proto ) ; lease_file_add ( eport , iaddr , iport , proto , desc , timestamp ) ; } # endif return r ; } else { syslog ( LOG_INFO , \"port<S2SV_blank>%hu<S2SV_blank>%s<S2SV_blank>(rhost<S2SV_blank>\\'%s\\')<S2SV_blank>already<S2SV_blank>redirected<S2SV_blank>to<S2SV_blank>%s:%hu\" , eport , protocol , rhost_old , iaddr_old , iport_old ) ; return - 2 ; } # ifdef CHECK_PORTINUSE } else if ( port_in_use ( ext_if_name , eport , proto , iaddr , iport ) > 0 ) { syslog ( LOG_INFO , \"port<S2SV_blank>%hu<S2SV_blank>protocol<S2SV_blank>%s<S2SV_blank>already<S2SV_blank>in<S2SV_blank>use\" , eport , protocol ) ; return - 4 ; # endif } else { timestamp = ( leaseduration > 0 ) ? upnp_time ( ) + leaseduration : 0 ; syslog ( LOG_INFO , \"redirecting<S2SV_blank>port<S2SV_blank>%hu<S2SV_blank>to<S2SV_blank>%s:%hu<S2SV_blank>protocol<S2SV_blank>%s<S2SV_blank>for:<S2SV_blank>%s\" , eport , iaddr , iport , protocol , desc ) ; return upnp_redirect_internal ( rhost , eport , iaddr , iport , proto , desc , timestamp ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 3 ; } if ( desc == NULL ) desc = \"\" ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12268\n\n```\nCWE-787 int jbig2_image_compose ( Jbig2Ctx * ctx , Jbig2Image * dst , Jbig2Image * src , int x , int y , Jbig2ComposeOp op ) { uint32_t w , h ; uint32_t shift ; uint32_t leftbyte ; uint8_t * ss ; uint8_t * dd ; uint8_t leftmask , rightmask ; int early = x >= 0 ; int late ; uint32_t bytewidth ; uint32_t syoffset = 0 ; if ( src == NULL ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> w = src -> width ; h = src -> height ; shift = ( x & 7 ) ; ss = src -> data - early ; if ( x < 0 ) { if ( w < ( uint32_t ) - x ) w = 0 ; else w += x ; ss += ( - x - 1 ) >> 3 ; x = 0 ; } if ( y < 0 ) { if ( h < ( uint32_t ) - y ) h = 0 ; else h += y ; syoffset = - y * src -> stride ; y = 0 ; } if ( ( uint32_t ) x + w > dst -> width ) { if ( dst -> width < ( uint32_t ) x ) w = 0 ; else w = dst -> width - x ; } if ( ( uint32_t ) y + h > dst -> height ) { if ( dst -> height < ( uint32_t ) y ) h = 0 ; else h = dst -> height - y ; } # ifdef JBIG2_DEBUG jbig2_error ( ctx , JBIG2_SEVERITY_DEBUG , - 1 , \"compositing<S2SV_blank>%dx%d<S2SV_blank>at<S2SV_blank>(%d,<S2SV_blank>%d)<S2SV_blank>after<S2SV_blank>clipping\" , w , h , x , y ) ; # endif if ( ( w <= 0 ) || ( h <= 0 ) ) { # ifdef JBIG2_DEBUG jbig2_error ( ctx , JBIG2_SEVERITY_DEBUG , - 1 , \"zero<S2SV_blank>clipping<S2SV_blank>region\" ) ; # endif return 0 ; } leftbyte = ( uint32_t ) x >> 3 ; dd = dst -> data + y * dst -> stride + leftbyte ; bytewidth = ( ( ( uint32_t ) x + w - 1 ) >> 3 ) - leftbyte + 1 ; leftmask = 255 >> ( x & 7 ) ; rightmask = ( ( ( x + w ) & 7 ) == 0 ) ? 255 : ~ ( 255 >> ( ( x + w ) & 7 ) ) ; if ( bytewidth == 1 ) leftmask &= rightmask ; late = ( ss + bytewidth >= src -> data + ( ( src -> width + 7 ) >> 3 ) ) ; ss += syoffset ; switch ( op ) { case JBIG2_COMPOSE_OR : jbig2_image_compose_opt_OR ( ss , dd , early , late , leftmask , rightmask , bytewidth , h , shift , dst -> stride , src -> stride ) ; break ; case JBIG2_COMPOSE_AND : jbig2_image_compose_opt_AND ( ss , dd , early , late , leftmask , rightmask , bytewidth , h , shift , dst -> stride , src -> stride ) ; break ; case JBIG2_COMPOSE_XOR : jbig2_image_compose_opt_XOR ( ss , dd , early , late , leftmask , rightmask , bytewidth , h , shift , dst -> stride , src -> stride ) ; break ; case JBIG2_COMPOSE_XNOR : jbig2_image_compose_opt_XNOR ( ss , dd , early , late , leftmask , rightmask , bytewidth , h , shift , dst -> stride , src -> stride ) ; break ; case JBIG2_COMPOSE_REPLACE : jbig2_image_compose_opt_REPLACE ( ss , dd , early , late , leftmask , rightmask , bytewidth , h , shift , dst -> stride , src -> stride ) ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; if ( ( UINT32_MAX - src -> width < ( x > 0 ? x : - x ) ) || ( UINT32_MAX - src -> height < ( y > 0 ? y : - y ) ) ) { # ifdef JBIG2_DEBUG jbig2_error ( ctx , JBIG2_SEVERITY_DEBUG , - 1 , \"overflow<S2SV_blank>in<S2SV_blank>compose_image\" ) ; # endif return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_do_mpt_command ( struct mpt_ioctl_command karg , void __user * mfPtr ) <S2SV_EndBug> { <S2SV_StartBug> MPT_ADAPTER * ioc ; <S2SV_EndBug> MPT_FRAME_HDR * mf = NULL ; MPIHeader_t * hdr ; char * psge ; struct buflist bufIn ; struct buflist bufOut ; dma_addr_t dma_addr_in ; dma_addr_t dma_addr_out ; int sgSize = 0 ; <S2SV_StartBug> int iocnum , flagsLength ; <S2SV_EndBug> int sz , rc = 0 ; int msgContext ; u16 req_idx ; ulong timeout ; unsigned long timeleft ; struct scsi_device * sdev ; unsigned long flags ; u8 function ; bufIn . kptr = bufOut . kptr = NULL ; bufIn . len = bufOut . len = 0 ; <S2SV_StartBug> if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || <S2SV_EndBug> ( ioc == NULL ) ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_do_mpt_command()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; } spin_lock_irqsave ( & ioc -> taskmgmt_lock , flags ) ; if ( ioc -> ioc_reset_in_progress ) { spin_unlock_irqrestore ( & ioc -> taskmgmt_lock , flags ) ; printk ( KERN_ERR MYNAM \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Busy<S2SV_blank>with<S2SV_blank>diagnostic<S2SV_blank>reset\\\\n\" , __FILE__ , __LINE__ ) ; return - EBUSY ; } spin_unlock_irqrestore ( & ioc -> taskmgmt_lock , flags ) ; if ( karg . maxReplyBytes < 0 || karg . dataInSize < 0 || karg . dataOutSize < 0 || karg . dataSgeOffset < 0 || karg . maxSenseBytes < 0 || karg . dataSgeOffset > ioc -> req_sz / 4 ) return - EINVAL ; sz = karg . dataSgeOffset * 4 ; if ( karg . dataInSize > 0 ) sz += ioc -> SGE_size ; if ( karg . dataOutSize > 0 ) sz += ioc -> SGE_size ; if ( sz > ioc -> req_sz ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Request<S2SV_blank>frame<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d)<S2SV_blank>maximum<S2SV_blank>(%d)\\\\n\" , ioc -> name , __FILE__ , __LINE__ , sz , ioc -> req_sz ) ; return - EFAULT ; } if ( ( mf = mpt_get_msg_frame ( mptctl_id , ioc ) ) == NULL ) return - EAGAIN ; hdr = ( MPIHeader_t * ) mf ; msgContext = le32_to_cpu ( hdr -> MsgContext ) ; req_idx = le16_to_cpu ( mf -> u . frame . hwhdr . msgctxu . fld . req_idx ) ; if ( copy_from_user ( mf , mfPtr , karg . dataSgeOffset * 4 ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>MF<S2SV_blank>from<S2SV_blank>mpt_ioctl_command<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , mfPtr ) ; function = - 1 ; rc = - EFAULT ; goto done_free_mem ; } hdr -> MsgContext = cpu_to_le32 ( msgContext ) ; function = hdr -> Function ; dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"sending<S2SV_blank>mpi<S2SV_blank>function<S2SV_blank>(0x%02X),<S2SV_blank>req=%p\\\\n\" , ioc -> name , hdr -> Function , mf ) ) ; switch ( function ) { case MPI_FUNCTION_IOC_FACTS : case MPI_FUNCTION_PORT_FACTS : karg . dataOutSize = karg . dataInSize = 0 ; break ; case MPI_FUNCTION_CONFIG : { Config_t * config_frame ; config_frame = ( Config_t * ) mf ; dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"\\\\ttype=0x%02x<S2SV_blank>ext_type=0x%02x<S2SV_blank>\" \"number=0x%02x<S2SV_blank>action=0x%02x\\\\n\" , ioc -> name , config_frame -> Header . PageType , config_frame -> ExtPageType , config_frame -> Header . PageNumber , config_frame -> Action ) ) ; break ; } case MPI_FUNCTION_FC_COMMON_TRANSPORT_SEND : case MPI_FUNCTION_FC_EX_LINK_SRVC_SEND : case MPI_FUNCTION_FW_UPLOAD : case MPI_FUNCTION_SCSI_ENCLOSURE_PROCESSOR : case MPI_FUNCTION_FW_DOWNLOAD : case MPI_FUNCTION_FC_PRIMITIVE_SEND : case MPI_FUNCTION_TOOLBOX : case MPI_FUNCTION_SAS_IO_UNIT_CONTROL : break ; case MPI_FUNCTION_SCSI_IO_REQUEST : if ( ioc -> sh ) { SCSIIORequest_t * pScsiReq = ( SCSIIORequest_t * ) mf ; int qtag = MPI_SCSIIO_CONTROL_UNTAGGED ; int scsidir = 0 ; int dataSize ; u32 id ; id = ( ioc -> devices_per_bus == 0 ) ? 256 : ioc -> devices_per_bus ; if ( pScsiReq -> TargetID > id ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Target<S2SV_blank>ID<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.<S2SV_blank>\\\\n\" , ioc -> name , __FILE__ , __LINE__ ) ; rc = - ENODEV ; goto done_free_mem ; } if ( pScsiReq -> Bus >= ioc -> number_of_buses ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Target<S2SV_blank>Bus<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.<S2SV_blank>\\\\n\" , ioc -> name , __FILE__ , __LINE__ ) ; rc = - ENODEV ; goto done_free_mem ; } pScsiReq -> MsgFlags &= ~ MPI_SCSIIO_MSGFLGS_SENSE_WIDTH ; pScsiReq -> MsgFlags |= mpt_msg_flags ( ioc ) ; if ( karg . maxSenseBytes > MPT_SENSE_BUFFER_SIZE ) pScsiReq -> SenseBufferLength = MPT_SENSE_BUFFER_SIZE ; else pScsiReq -> SenseBufferLength = karg . maxSenseBytes ; pScsiReq -> SenseBufferLowAddr = cpu_to_le32 ( ioc -> sense_buf_low_dma + ( req_idx * MPT_SENSE_BUFFER_ALLOC ) ) ; shost_for_each_device ( sdev , ioc -> sh ) { struct scsi_target * starget = scsi_target ( sdev ) ; VirtTarget * vtarget = starget -> hostdata ; if ( vtarget == NULL ) continue ; if ( ( pScsiReq -> TargetID == vtarget -> id ) && ( pScsiReq -> Bus == vtarget -> channel ) && ( vtarget -> tflags & MPT_TARGET_FLAGS_Q_YES ) ) qtag = MPI_SCSIIO_CONTROL_SIMPLEQ ; } if ( karg . dataOutSize > 0 ) { scsidir = MPI_SCSIIO_CONTROL_WRITE ; dataSize = karg . dataOutSize ; } else { scsidir = MPI_SCSIIO_CONTROL_READ ; dataSize = karg . dataInSize ; } pScsiReq -> Control = cpu_to_le32 ( scsidir | qtag ) ; pScsiReq -> DataLength = cpu_to_le32 ( dataSize ) ; } else { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"SCSI<S2SV_blank>driver<S2SV_blank>is<S2SV_blank>not<S2SV_blank>loaded.<S2SV_blank>\\\\n\" , ioc -> name , __FILE__ , __LINE__ ) ; rc = - EFAULT ; goto done_free_mem ; } break ; case MPI_FUNCTION_SMP_PASSTHROUGH : break ; case MPI_FUNCTION_SATA_PASSTHROUGH : if ( ! ioc -> sh ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"SCSI<S2SV_blank>driver<S2SV_blank>is<S2SV_blank>not<S2SV_blank>loaded.<S2SV_blank>\\\\n\" , ioc -> name , __FILE__ , __LINE__ ) ; rc = - EFAULT ; goto done_free_mem ; } break ; case MPI_FUNCTION_RAID_ACTION : break ; case MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH : if ( ioc -> sh ) { SCSIIORequest_t * pScsiReq = ( SCSIIORequest_t * ) mf ; int qtag = MPI_SCSIIO_CONTROL_SIMPLEQ ; int scsidir = MPI_SCSIIO_CONTROL_READ ; int dataSize ; pScsiReq -> MsgFlags &= ~ MPI_SCSIIO_MSGFLGS_SENSE_WIDTH ; pScsiReq -> MsgFlags |= mpt_msg_flags ( ioc ) ; if ( karg . maxSenseBytes > MPT_SENSE_BUFFER_SIZE ) pScsiReq -> SenseBufferLength = MPT_SENSE_BUFFER_SIZE ; else pScsiReq -> SenseBufferLength = karg . maxSenseBytes ; pScsiReq -> SenseBufferLowAddr = cpu_to_le32 ( ioc -> sense_buf_low_dma + ( req_idx * MPT_SENSE_BUFFER_ALLOC ) ) ; if ( karg . dataOutSize > 0 ) { scsidir = MPI_SCSIIO_CONTROL_WRITE ; dataSize = karg . dataOutSize ; } else { scsidir = MPI_SCSIIO_CONTROL_READ ; dataSize = karg . dataInSize ; } pScsiReq -> Control = cpu_to_le32 ( scsidir | qtag ) ; pScsiReq -> DataLength = cpu_to_le32 ( dataSize ) ; } else { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"SCSI<S2SV_blank>driver<S2SV_blank>is<S2SV_blank>not<S2SV_blank>loaded.<S2SV_blank>\\\\n\" , ioc -> name , __FILE__ , __LINE__ ) ; rc = - EFAULT ; goto done_free_mem ; } break ; case MPI_FUNCTION_SCSI_TASK_MGMT : { SCSITaskMgmt_t * pScsiTm ; pScsiTm = ( SCSITaskMgmt_t * ) mf ; dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"\\\\tTaskType=0x%x<S2SV_blank>MsgFlags=0x%x<S2SV_blank>\" \"TaskMsgContext=0x%x<S2SV_blank>id=%d<S2SV_blank>channel=%d\\\\n\" , ioc -> name , pScsiTm -> TaskType , le32_to_cpu ( pScsiTm -> TaskMsgContext ) , pScsiTm -> MsgFlags , pScsiTm -> TargetID , pScsiTm -> Bus ) ) ; break ; } case MPI_FUNCTION_IOC_INIT : { IOCInit_t * pInit = ( IOCInit_t * ) mf ; u32 high_addr , sense_high ; if ( sizeof ( dma_addr_t ) == sizeof ( u64 ) ) { high_addr = cpu_to_le32 ( ( u32 ) ( ( u64 ) ioc -> req_frames_dma >> 32 ) ) ; sense_high = cpu_to_le32 ( ( u32 ) ( ( u64 ) ioc -> sense_buf_pool_dma >> 32 ) ) ; } else { high_addr = 0 ; sense_high = 0 ; } if ( ( pInit -> Flags != 0 ) || ( pInit -> MaxDevices != ioc -> facts . MaxDevices ) || ( pInit -> MaxBuses != ioc -> facts . MaxBuses ) || ( pInit -> ReplyFrameSize != cpu_to_le16 ( ioc -> reply_sz ) ) || ( pInit -> HostMfaHighAddr != high_addr ) || ( pInit -> SenseBufferHighAddr != sense_high ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"IOC_INIT<S2SV_blank>issued<S2SV_blank>with<S2SV_blank>1<S2SV_blank>or<S2SV_blank>more<S2SV_blank>incorrect<S2SV_blank>parameters.<S2SV_blank>Rejected.\\\\n\" , ioc -> name , __FILE__ , __LINE__ ) ; rc = - EFAULT ; goto done_free_mem ; } } break ; default : printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Illegal<S2SV_blank>request<S2SV_blank>(function<S2SV_blank>0x%x)<S2SV_blank>\\\\n\" , ioc -> name , __FILE__ , __LINE__ , hdr -> Function ) ; rc = - EFAULT ; goto done_free_mem ; } psge = ( char * ) ( ( ( int * ) mf ) + karg . dataSgeOffset ) ; flagsLength = 0 ; if ( karg . dataOutSize > 0 ) sgSize ++ ; if ( karg . dataInSize > 0 ) sgSize ++ ; if ( sgSize > 0 ) { if ( karg . dataOutSize > 0 ) { if ( karg . dataInSize > 0 ) { flagsLength = ( MPI_SGE_FLAGS_SIMPLE_ELEMENT | MPI_SGE_FLAGS_END_OF_BUFFER | MPI_SGE_FLAGS_DIRECTION ) << MPI_SGE_FLAGS_SHIFT ; } else { flagsLength = MPT_SGE_FLAGS_SSIMPLE_WRITE ; } flagsLength |= karg . dataOutSize ; bufOut . len = karg . dataOutSize ; bufOut . kptr = pci_alloc_consistent ( ioc -> pcidev , bufOut . len , & dma_addr_out ) ; if ( bufOut . kptr == NULL ) { rc = - ENOMEM ; goto done_free_mem ; } else { ioc -> add_sge ( psge , flagsLength , dma_addr_out ) ; psge += ioc -> SGE_size ; if ( copy_from_user ( bufOut . kptr , karg . dataOutBufPtr , bufOut . len ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>Unable<S2SV_blank>\" \"to<S2SV_blank>read<S2SV_blank>user<S2SV_blank>data<S2SV_blank>\" \"struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , karg . dataOutBufPtr ) ; rc = - EFAULT ; goto done_free_mem ; } } } if ( karg . dataInSize > 0 ) { flagsLength = MPT_SGE_FLAGS_SSIMPLE_READ ; flagsLength |= karg . dataInSize ; bufIn . len = karg . dataInSize ; bufIn . kptr = pci_alloc_consistent ( ioc -> pcidev , bufIn . len , & dma_addr_in ) ; if ( bufIn . kptr == NULL ) { rc = - ENOMEM ; goto done_free_mem ; } else { ioc -> add_sge ( psge , flagsLength , dma_addr_in ) ; } } } else { ioc -> add_sge ( psge , flagsLength , ( dma_addr_t ) - 1 ) ; } SET_MGMT_MSG_CONTEXT ( ioc -> ioctl_cmds . msg_context , hdr -> MsgContext ) ; INITIALIZE_MGMT_STATUS ( ioc -> ioctl_cmds . status ) if ( hdr -> Function == MPI_FUNCTION_SCSI_TASK_MGMT ) { mutex_lock ( & ioc -> taskmgmt_cmds . mutex ) ; if ( mpt_set_taskmgmt_in_progress_flag ( ioc ) != 0 ) { mutex_unlock ( & ioc -> taskmgmt_cmds . mutex ) ; goto done_free_mem ; } DBG_DUMP_TM_REQUEST_FRAME ( ioc , ( u32 * ) mf ) ; if ( ( ioc -> facts . IOCCapabilities & MPI_IOCFACTS_CAPABILITY_HIGH_PRI_Q ) && ( ioc -> facts . MsgVersion >= MPI_VERSION_01_05 ) ) mpt_put_msg_frame_hi_pri ( mptctl_id , ioc , mf ) ; else { rc = mpt_send_handshake_request ( mptctl_id , ioc , sizeof ( SCSITaskMgmt_t ) , ( u32 * ) mf , CAN_SLEEP ) ; if ( rc != 0 ) { dfailprintk ( ioc , printk ( MYIOC_s_ERR_FMT \"send_handshake<S2SV_blank>FAILED!<S2SV_blank>(ioc<S2SV_blank>%p,<S2SV_blank>mf<S2SV_blank>%p)\\\\n\" , ioc -> name , ioc , mf ) ) ; mpt_clear_taskmgmt_in_progress_flag ( ioc ) ; rc = - ENODATA ; mutex_unlock ( & ioc -> taskmgmt_cmds . mutex ) ; goto done_free_mem ; } } } else mpt_put_msg_frame ( mptctl_id , ioc , mf ) ; timeout = ( karg . timeout > 0 ) ? karg . timeout : MPT_IOCTL_DEFAULT_TIMEOUT ; retry_wait : timeleft = wait_for_completion_timeout ( & ioc -> ioctl_cmds . done , HZ * timeout ) ; if ( ! ( ioc -> ioctl_cmds . status & MPT_MGMT_STATUS_COMMAND_GOOD ) ) { rc = - ETIME ; dfailprintk ( ioc , printk ( MYIOC_s_ERR_FMT \"%s:<S2SV_blank>TIMED<S2SV_blank>OUT!\\\\n\" , ioc -> name , __func__ ) ) ; if ( ioc -> ioctl_cmds . status & MPT_MGMT_STATUS_DID_IOCRESET ) { if ( function == MPI_FUNCTION_SCSI_TASK_MGMT ) mutex_unlock ( & ioc -> taskmgmt_cmds . mutex ) ; goto done_free_mem ; } if ( ! timeleft ) { printk ( MYIOC_s_WARN_FMT \"mpt<S2SV_blank>cmd<S2SV_blank>timeout,<S2SV_blank>doorbell=0x%08x\" \"<S2SV_blank>function=0x%x\\\\n\" , ioc -> name , mpt_GetIocState ( ioc , 0 ) , function ) ; if ( function == MPI_FUNCTION_SCSI_TASK_MGMT ) mutex_unlock ( & ioc -> taskmgmt_cmds . mutex ) ; mptctl_timeout_expired ( ioc , mf ) ; mf = NULL ; } else goto retry_wait ; goto done_free_mem ; } if ( function == MPI_FUNCTION_SCSI_TASK_MGMT ) mutex_unlock ( & ioc -> taskmgmt_cmds . mutex ) ; mf = NULL ; if ( ioc -> ioctl_cmds . status & MPT_MGMT_STATUS_RF_VALID ) { if ( karg . maxReplyBytes < ioc -> reply_sz ) { sz = min ( karg . maxReplyBytes , 4 * ioc -> ioctl_cmds . reply [ 2 ] ) ; } else { sz = min ( ioc -> reply_sz , 4 * ioc -> ioctl_cmds . reply [ 2 ] ) ; } if ( sz > 0 ) { if ( copy_to_user ( karg . replyFrameBufPtr , ioc -> ioctl_cmds . reply , sz ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>out<S2SV_blank>reply<S2SV_blank>frame<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , karg . replyFrameBufPtr ) ; rc = - ENODATA ; goto done_free_mem ; } } } if ( ioc -> ioctl_cmds . status & MPT_MGMT_STATUS_SENSE_VALID ) { sz = min ( karg . maxSenseBytes , MPT_SENSE_BUFFER_SIZE ) ; if ( sz > 0 ) { if ( copy_to_user ( karg . senseDataPtr , ioc -> ioctl_cmds . sense , sz ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>sense<S2SV_blank>data<S2SV_blank>to<S2SV_blank>user<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , karg . senseDataPtr ) ; rc = - ENODATA ; goto done_free_mem ; } } } if ( ( ioc -> ioctl_cmds . status & MPT_MGMT_STATUS_COMMAND_GOOD ) && ( karg . dataInSize > 0 ) && ( bufIn . kptr ) ) { if ( copy_to_user ( karg . dataInBufPtr , bufIn . kptr , karg . dataInSize ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_mpt_command<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>data<S2SV_blank>to<S2SV_blank>user<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , karg . dataInBufPtr ) ; rc = - ENODATA ; } } done_free_mem : CLEAR_MGMT_STATUS ( ioc -> ioctl_cmds . status ) SET_MGMT_MSG_CONTEXT ( ioc -> ioctl_cmds . msg_context , 0 ) ; if ( bufOut . kptr != NULL ) { pci_free_consistent ( ioc -> pcidev , bufOut . len , ( void * ) bufOut . kptr , dma_addr_out ) ; } if ( bufIn . kptr != NULL ) { pci_free_consistent ( ioc -> pcidev , bufIn . len , ( void * ) bufIn . kptr , dma_addr_in ) ; } if ( mf ) mpt_free_msg_frame ( ioc , mf ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_do_mpt_command ( MPT_ADAPTER * ioc , <S2SV_ModStart> mfPtr ) { <S2SV_ModEnd> MPT_FRAME_HDR * mf <S2SV_ModStart> 0 ; int <S2SV_ModEnd> flagsLength ; int <S2SV_ModStart> = 0 ; <S2SV_ModEnd> spin_lock_irqsave ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6538\n\n```\nCWE-200 static int copy_to_user_auth ( struct xfrm_algo_auth * auth , struct sk_buff * skb ) { struct xfrm_algo * algo ; struct nlattr * nla ; nla = nla_reserve ( skb , XFRMA_ALG_AUTH , sizeof ( * algo ) + ( auth -> alg_key_len + 7 ) / 8 ) ; if ( ! nla ) return - EMSGSIZE ; algo = nla_data ( nla ) ; <S2SV_StartBug> strcpy ( algo -> alg_name , auth -> alg_name ) ; <S2SV_EndBug> memcpy ( algo -> alg_key , auth -> alg_key , ( auth -> alg_key_len + 7 ) / 8 ) ; algo -> alg_key_len = auth -> alg_key_len ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nla ) ; strncpy <S2SV_ModEnd> ( algo -> <S2SV_ModStart> auth -> alg_name , sizeof ( algo -> alg_name )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-30015\n\n```\nCWE-476 static GF_Err av1dmx_parse_flush_sample ( GF_Filter * filter , GF_AV1DmxCtx * ctx ) { u32 pck_size ; GF_FilterPacket * pck ; <S2SV_StartBug> u8 * output ; <S2SV_EndBug> gf_bs_get_content_no_truncate ( ctx -> state . bs , & ctx -> state . frame_obus , & pck_size , & ctx -> state . frame_obus_alloc ) ; if ( ! pck_size ) { GF_LOG ( GF_LOG_DEBUG , GF_LOG_CONTAINER , ( \"[AV1Dmx]<S2SV_blank>no<S2SV_blank>frame<S2SV_blank>OBU,<S2SV_blank>skipping<S2SV_blank>OBU\\\\n\" ) ) ; return GF_OK ; } pck = gf_filter_pck_new_alloc ( ctx -> opid , pck_size , & output ) ; if ( ctx -> src_pck ) gf_filter_pck_merge_properties ( ctx -> src_pck , pck ) ; gf_filter_pck_set_cts ( pck , ctx -> cts ) ; gf_filter_pck_set_sap ( pck , ctx -> state . frame_state . key_frame ? GF_FILTER_SAP_1 : 0 ) ; memcpy ( output , ctx -> state . frame_obus , pck_size ) ; if ( ctx -> deps ) { u8 flags = 0 ; flags = ( ctx -> state . frame_state . key_frame ) ? 2 : 1 ; flags <<= 2 ; flags |= ctx -> state . frame_state . refresh_frame_flags ? 1 : 2 ; flags <<= 2 ; gf_filter_pck_set_dependency_flags ( pck , flags ) ; } gf_filter_pck_send ( pck ) ; av1dmx_update_cts ( ctx ) ; gf_av1_reset_state ( & ctx -> state , GF_FALSE ) ; return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u8 * output ; if ( ! ctx -> opid ) return GF_NON_COMPLIANT_BITSTREAM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8816\n\n```\nCWE-000 static void hub_activate ( struct usb_hub * hub , enum hub_activation_type type ) { struct usb_device * hdev = hub -> hdev ; struct usb_hcd * hcd ; int ret ; int port1 ; int status ; bool need_debounce_delay = false ; unsigned delay ; <S2SV_StartBug> if ( type == HUB_INIT2 ) <S2SV_EndBug> goto init2 ; <S2SV_StartBug> if ( type == HUB_INIT3 ) <S2SV_EndBug> goto init3 ; if ( type != HUB_RESUME ) { if ( hdev -> parent && hub_is_superspeed ( hdev ) ) { ret = usb_control_msg ( hdev , usb_sndctrlpipe ( hdev , 0 ) , HUB_SET_DEPTH , USB_RT_HUB , hdev -> level - 1 , 0 , NULL , 0 , USB_CTRL_SET_TIMEOUT ) ; if ( ret < 0 ) dev_err ( hub -> intfdev , \"set<S2SV_blank>hub<S2SV_blank>depth<S2SV_blank>failed\\\\n\" ) ; } if ( type == HUB_INIT ) { delay = hub_power_on_good_delay ( hub ) ; hub_power_on ( hub , false ) ; INIT_DELAYED_WORK ( & hub -> init_work , hub_init_func2 ) ; queue_delayed_work ( system_power_efficient_wq , & hub -> init_work , msecs_to_jiffies ( delay ) ) ; usb_autopm_get_interface_no_resume ( to_usb_interface ( hub -> intfdev ) ) ; return ; } else if ( type == HUB_RESET_RESUME ) { hcd = bus_to_hcd ( hdev -> bus ) ; if ( hcd -> driver -> update_hub_device ) { ret = hcd -> driver -> update_hub_device ( hcd , hdev , & hub -> tt , GFP_NOIO ) ; if ( ret < 0 ) { dev_err ( hub -> intfdev , \"Host<S2SV_blank>not<S2SV_blank>\" \"accepting<S2SV_blank>hub<S2SV_blank>info<S2SV_blank>\" \"update.\\\\n\" ) ; dev_err ( hub -> intfdev , \"LS/FS<S2SV_blank>devices<S2SV_blank>\" \"and<S2SV_blank>hubs<S2SV_blank>may<S2SV_blank>not<S2SV_blank>work<S2SV_blank>\" \"under<S2SV_blank>this<S2SV_blank>hub\\\\n.\" ) ; } } hub_power_on ( hub , true ) ; } else { hub_power_on ( hub , true ) ; } } init2 : for ( port1 = 1 ; port1 <= hdev -> maxchild ; ++ port1 ) { struct usb_port * port_dev = hub -> ports [ port1 - 1 ] ; struct usb_device * udev = port_dev -> child ; u16 portstatus , portchange ; portstatus = portchange = 0 ; status = hub_port_status ( hub , port1 , & portstatus , & portchange ) ; if ( udev || ( portstatus & USB_PORT_STAT_CONNECTION ) ) dev_dbg ( & port_dev -> dev , \"status<S2SV_blank>%04x<S2SV_blank>change<S2SV_blank>%04x\\\\n\" , portstatus , portchange ) ; if ( ( portstatus & USB_PORT_STAT_ENABLE ) && ( type != HUB_RESUME || ! ( portstatus & USB_PORT_STAT_CONNECTION ) || ! udev || udev -> state == USB_STATE_NOTATTACHED ) ) { portstatus &= ~ USB_PORT_STAT_ENABLE ; if ( ! hub_is_superspeed ( hdev ) ) usb_clear_port_feature ( hdev , port1 , USB_PORT_FEAT_ENABLE ) ; } if ( portchange & USB_PORT_STAT_C_CONNECTION ) { need_debounce_delay = true ; usb_clear_port_feature ( hub -> hdev , port1 , USB_PORT_FEAT_C_CONNECTION ) ; } if ( portchange & USB_PORT_STAT_C_ENABLE ) { need_debounce_delay = true ; usb_clear_port_feature ( hub -> hdev , port1 , USB_PORT_FEAT_C_ENABLE ) ; } if ( portchange & USB_PORT_STAT_C_RESET ) { need_debounce_delay = true ; usb_clear_port_feature ( hub -> hdev , port1 , USB_PORT_FEAT_C_RESET ) ; } if ( ( portchange & USB_PORT_STAT_C_BH_RESET ) && hub_is_superspeed ( hub -> hdev ) ) { need_debounce_delay = true ; usb_clear_port_feature ( hub -> hdev , port1 , USB_PORT_FEAT_C_BH_PORT_RESET ) ; } if ( ! ( portstatus & USB_PORT_STAT_CONNECTION ) || ( portchange & USB_PORT_STAT_C_CONNECTION ) ) clear_bit ( port1 , hub -> removed_bits ) ; if ( ! udev || udev -> state == USB_STATE_NOTATTACHED ) { if ( udev || ( portstatus & USB_PORT_STAT_CONNECTION ) || ( portstatus & USB_PORT_STAT_OVERCURRENT ) ) set_bit ( port1 , hub -> change_bits ) ; } else if ( portstatus & USB_PORT_STAT_ENABLE ) { bool port_resumed = ( portstatus & USB_PORT_STAT_LINK_STATE ) == USB_SS_PORT_LS_U0 ; if ( portchange || ( hub_is_superspeed ( hub -> hdev ) && port_resumed ) ) set_bit ( port1 , hub -> change_bits ) ; } else if ( udev -> persist_enabled ) { # ifdef CONFIG_PM udev -> reset_resume = 1 ; # endif if ( test_bit ( port1 , hub -> power_bits ) ) set_bit ( port1 , hub -> change_bits ) ; } else { usb_set_device_state ( udev , USB_STATE_NOTATTACHED ) ; set_bit ( port1 , hub -> change_bits ) ; } } if ( need_debounce_delay ) { delay = HUB_DEBOUNCE_STABLE ; if ( type == HUB_INIT2 ) { INIT_DELAYED_WORK ( & hub -> init_work , hub_init_func3 ) ; queue_delayed_work ( system_power_efficient_wq , & hub -> init_work , msecs_to_jiffies ( delay ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } else { msleep ( delay ) ; } } init3 : hub -> quiescing = 0 ; status = usb_submit_urb ( hub -> urb , GFP_NOIO ) ; if ( status < 0 ) dev_err ( hub -> intfdev , \"activate<S2SV_blank>--><S2SV_blank>%d\\\\n\" , status ) ; if ( hub -> has_indicators && blinkenlights ) queue_delayed_work ( system_power_efficient_wq , & hub -> leds , LED_CYCLE_PERIOD ) ; kick_hub_wq ( hub ) ; if ( type <= HUB_INIT3 ) usb_autopm_put_interface_async ( to_usb_interface ( hub -> intfdev ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> type == HUB_INIT2 || type == HUB_INIT3 ) { device_lock ( hub -> intfdev ) ; if ( hub -> disconnected ) { device_unlock ( hub -> intfdev ) ; kref_put ( & hub -> kref , hub_release ) ; return ; } if ( type == HUB_INIT2 <S2SV_ModStart> goto init2 ; goto init3 ; } kref_get ( & hub -> kref ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) ; device_unlock ( hub -> intfdev ) ; <S2SV_ModStart> ) ) ; if ( type == HUB_INIT2 || type == HUB_INIT3 ) device_unlock ( hub -> intfdev ) ; kref_put ( & hub -> kref , hub_release ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void ftpServerProcessList ( FtpClientConnection * connection , char_t * param ) { error_t error ; uint_t perm ; if ( ! connection -> userLoggedIn ) { osStrcpy ( connection -> response , \"530<S2SV_blank>Not<S2SV_blank>logged<S2SV_blank>in\\\\r\\\\n\" ) ; return ; } while ( * param == '-' ) { while ( * param != '<S2SV_blank>' && * param != '\\\\0' ) <S2SV_StartBug> param ++ ; <S2SV_EndBug> <S2SV_StartBug> while ( * param == '<S2SV_blank>' ) <S2SV_EndBug> <S2SV_StartBug> param ++ ; <S2SV_EndBug> } if ( * param == '\\\\0' ) { osStrcpy ( connection -> path , connection -> currentDir ) ; } else { error = ftpServerGetPath ( connection , param , connection -> path , FTP_SERVER_MAX_PATH_LEN ) ; if ( error ) { osStrcpy ( connection -> response , \"501<S2SV_blank>Invalid<S2SV_blank>parameter\\\\r\\\\n\" ) ; return ; } } perm = ftpServerGetFilePermissions ( connection , connection -> path ) ; if ( ( perm & FTP_FILE_PERM_READ ) == 0 ) { osStrcpy ( connection -> response , \"550<S2SV_blank>Access<S2SV_blank>denied\\\\r\\\\n\" ) ; return ; } connection -> dir = fsOpenDir ( connection -> path ) ; if ( ! connection -> dir ) { osStrcpy ( connection -> response , \"550<S2SV_blank>Directory<S2SV_blank>not<S2SV_blank>found\\\\r\\\\n\" ) ; return ; } if ( connection -> passiveMode ) { if ( connection -> dataChannel . state == FTP_CHANNEL_STATE_IDLE ) connection -> dataChannel . state = FTP_CHANNEL_STATE_SEND ; } else { error = ftpServerOpenDataChannel ( connection ) ; if ( error ) { fsCloseDir ( connection -> dir ) ; osStrcpy ( connection -> response , \"450<S2SV_blank>Can\\'t<S2SV_blank>open<S2SV_blank>data<S2SV_blank>connection\\\\r\\\\n\" ) ; return ; } connection -> dataChannel . state = FTP_CHANNEL_STATE_SEND ; } connection -> bufferLength = 0 ; connection -> bufferPos = 0 ; connection -> controlChannel . state = FTP_CHANNEL_STATE_LIST ; osStrcpy ( connection -> response , \"150<S2SV_blank>Opening<S2SV_blank>data<S2SV_blank>connection\\\\r\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != '\\\\0' ) { <S2SV_ModStart> param ++ ; } <S2SV_ModStart> == '<S2SV_blank>' ) { <S2SV_ModStart> param ++ ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9225\n\n```\nCWE-787 __inline # if defined __GNUC_STDC_INLINE__ || defined __GNUC_GNU_INLINE__ __attribute__ ( ( __gnu_inline__ ) ) # endif # endif const struct ByUnfoldKey * unicode_unfold_key ( OnigCodePoint code ) { static const struct ByUnfoldKey wordlist [ ] = { { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0x1040a , 3267 , 1 } , { 0x1e0a , 1727 , 1 } , { 0x040a , 1016 , 1 } , { 0x010a , 186 , 1 } , { 0x1f0a , 2088 , 1 } , { 0x2c0a , 2451 , 1 } , { 0x0189 , 619 , 1 } , { 0x1f89 , 134 , 2 } , { 0x1f85 , 154 , 2 } , { 0x0389 , 733 , 1 } , { 0x03ff , 724 , 1 } , { 0xab89 , 1523 , 1 } , { 0xab85 , 1511 , 1 } , { 0x10c89 , 3384 , 1 } , { 0x10c85 , 3372 , 1 } , { 0x1e84 , 1911 , 1 } , { 0x03f5 , 752 , 1 } , { 0x0184 , 360 , 1 } , { 0x1f84 , 149 , 2 } , { 0x2c84 , 2592 , 1 } , { 0x017d , 351 , 1 } , { 0x1ff3 , 96 , 2 } , { 0xab84 , 1508 , 1 } , { 0xa784 , 3105 , 1 } , { 0x10c84 , 3369 , 1 } , { 0xab7d , 1487 , 1 } , { 0xa77d , 1706 , 1 } , { 0x1e98 , 38 , 2 } , { 0x0498 , 1106 , 1 } , { 0x0198 , 375 , 1 } , { 0x1f98 , 169 , 2 } , { 0x2c98 , 2622 , 1 } , { 0x0398 , 762 , 1 } , { 0xa684 , 2940 , 1 } , { 0xab98 , 1568 , 1 } , { 0xa798 , 3123 , 1 } , { 0x10c98 , 3429 , 1 } , { 0x050a , 1277 , 1 } , { 0x1ffb , 2265 , 1 } , { 0x1e96 , 16 , 2 } , { 0x0496 , 1103 , 1 } , { 0x0196 , 652 , 1 } , { 0x1f96 , 199 , 2 } , { 0x2c96 , 2619 , 1 } , { 0x0396 , 756 , 1 } , { 0xa698 , 2970 , 1 } , { 0xab96 , 1562 , 1 } , { 0xa796 , 3120 , 1 } , { 0x10c96 , 3423 , 1 } , { 0x1feb , 2259 , 1 } , { 0x2ceb , 2736 , 1 } , { 0x1e90 , 1929 , 1 } , { 0x0490 , 1094 , 1 } , { 0x0190 , 628 , 1 } , { 0x1f90 , 169 , 2 } , { 0x2c90 , 2610 , 1 } , { 0x0390 , 25 , 3 } , { 0xa696 , 2967 , 1 } , { 0xab90 , 1544 , 1 } , { 0xa790 , 3114 , 1 } , { 0x10c90 , 3405 , 1 } , { 0x01d7 , 444 , 1 } , { 0x1fd7 , 31 , 3 } , { 0x1ea6 , 1947 , 1 } , { 0x04a6 , 1127 , 1 } , { 0x01a6 , 676 , 1 } , { 0x1fa6 , 239 , 2 } , { 0x2ca6 , 2643 , 1 } , { 0x03a6 , 810 , 1 } , { 0xa690 , 2958 , 1 } , { 0xaba6 , 1610 , 1 } , { 0xa7a6 , 3144 , 1 } , { 0x10ca6 , 3471 , 1 } , { 0x1ea4 , 1944 , 1 } , { 0x04a4 , 1124 , 1 } , { 0x01a4 , 390 , 1 } , { 0x1fa4 , 229 , 2 } , { 0x2ca4 , 2640 , 1 } , { 0x03a4 , 804 , 1 } , { 0x10a6 , 2763 , 1 } , { 0xaba4 , 1604 , 1 } , { 0xa7a4 , 3141 , 1 } , { 0x10ca4 , 3465 , 1 } , { 0x1ea0 , 1938 , 1 } , { 0x04a0 , 1118 , 1 } , { 0x01a0 , 384 , 1 } , { 0x1fa0 , 209 , 2 } , { 0x2ca0 , 2634 , 1 } , { 0x03a0 , 792 , 1 } , { 0x10a4 , 2757 , 1 } , { 0xaba0 , 1592 , 1 } , { 0xa7a0 , 3135 , 1 } , { 0x10ca0 , 3453 , 1 } , { 0x1eb2 , 1965 , 1 } , { 0x04b2 , 1145 , 1 } , { 0x01b2 , 694 , 1 } , { 0x1fb2 , 249 , 2 } , { 0x2cb2 , 2661 , 1 } , { 0x03fd , 718 , 1 } , { 0x10a0 , 2745 , 1 } , { 0xabb2 , 1646 , 1 } , { 0xa7b2 , 703 , 1 } , { 0x10cb2 , 3507 , 1 } , { 0x1eac , 1956 , 1 } , { 0x04ac , 1136 , 1 } , { 0x01ac , 396 , 1 } , { 0x1fac , 229 , 2 } , { 0x2cac , 2652 , 1 } , { 0x0537 , 1352 , 1 } , { 0x10b2 , 2799 , 1 } , { 0xabac , 1628 , 1 } , { 0xa7ac , 637 , 1 } , { 0x10cac , 3489 , 1 } , { 0x1eaa , 1953 , 1 } , { 0x04aa , 1133 , 1 } , { 0x00dd , 162 , 1 } , { 0x1faa , 219 , 2 } , { 0x2caa , 2649 , 1 } , { 0x03aa , 824 , 1 } , { 0x10ac , 2781 , 1 } , { 0xabaa , 1622 , 1 } , { 0xa7aa , 646 , 1 } , { 0x10caa , 3483 , 1 } , { 0x1ea8 , 1950 , 1 } , { 0x04a8 , 1130 , 1 } , { 0x020a , 517 , 1 } , { 0x1fa8 , 209 , 2 } , { 0x2ca8 , 2646 , 1 } , { 0x03a8 , 817 , 1 } , { 0x10aa , 2775 , 1 } , { 0xaba8 , 1616 , 1 } , { 0xa7a8 , 3147 , 1 } , { 0x10ca8 , 3477 , 1 } , { 0x1ea2 , 1941 , 1 } , { 0x04a2 , 1121 , 1 } , { 0x01a2 , 387 , 1 } , { 0x1fa2 , 219 , 2 } , { 0x2ca2 , 2637 , 1 } , { 0x118a6 , 3528 , 1 } , { 0x10a8 , 2769 , 1 } , { 0xaba2 , 1598 , 1 } , { 0xa7a2 , 3138 , 1 } , { 0x10ca2 , 3459 , 1 } , { 0x2ced , 2739 , 1 } , { 0x1fe9 , 2283 , 1 } , { 0x1fe7 , 47 , 3 } , { 0x1eb0 , 1962 , 1 } , { 0x04b0 , 1142 , 1 } , { 0x118a4 , 3522 , 1 } , { 0x10a2 , 2751 , 1 } , { 0x2cb0 , 2658 , 1 } , { 0x03b0 , 41 , 3 } , { 0x1fe3 , 41 , 3 } , { 0xabb0 , 1640 , 1 } , { 0xa7b0 , 706 , 1 } , { 0x10cb0 , 3501 , 1 } , { 0x01d9 , 447 , 1 } , { 0x1fd9 , 2277 , 1 } , { 0x118a0 , 3510 , 1 } , { 0x00df , 24 , 2 } , { 0x00d9 , 150 , 1 } , { 0xab77 , 1469 , 1 } , { 0x10b0 , 2793 , 1 } , { 0x1eae , 1959 , 1 } , { 0x04ae , 1139 , 1 } , { 0x01ae , 685 , 1 } , { 0x1fae , 239 , 2 } , { 0x2cae , 2655 , 1 } , { 0x118b2 , 3564 , 1 } , { 0xab73 , 1457 , 1 } , { 0xabae , 1634 , 1 } , { 0xab71 , 1451 , 1 } , { 0x10cae , 3495 , 1 } , { 0x1e2a , 1775 , 1 } , { 0x042a , 968 , 1 } , { 0x012a , 234 , 1 } , { 0x1f2a , 2130 , 1 } , { 0x2c2a , 2547 , 1 } , { 0x118ac , 3546 , 1 } , { 0x10ae , 2787 , 1 } , { 0x0535 , 1346 , 1 } , { 0xa72a , 2988 , 1 } , { 0x1e9a , 0 , 2 } , { 0x049a , 1109 , 1 } , { 0xff37 , 3225 , 1 } , { 0x1f9a , 179 , 2 } , { 0x2c9a , 2625 , 1 } , { 0x039a , 772 , 1 } , { 0x118aa , 3540 , 1 } , { 0xab9a , 1574 , 1 } , { 0xa79a , 3126 , 1 } , { 0x10c9a , 3435 , 1 } , { 0x1e94 , 1935 , 1 } , { 0x0494 , 1100 , 1 } , { 0x0194 , 640 , 1 } , { 0x1f94 , 189 , 2 } , { 0x2c94 , 2616 , 1 } , { 0x0394 , 749 , 1 } , { 0x118a8 , 3534 , 1 } , { 0xab94 , 1556 , 1 } , { 0xa69a , 2973 , 1 } , { 0x10c94 , 3417 , 1 } , { 0x10402 , 3243 , 1 } , { 0x1e02 , 1715 , 1 } , { 0x0402 , 992 , 1 } , { 0x0102 , 174 , 1 } , { 0x0533 , 1340 , 1 } , { 0x2c02 , 2427 , 1 } , { 0x118a2 , 3516 , 1 } , { 0x052a , 1325 , 1 } , { 0xa694 , 2964 , 1 } , { 0x1e92 , 1932 , 1 } , { 0x0492 , 1097 , 1 } , { 0x2165 , 2307 , 1 } , { 0x1f92 , 179 , 2 } , { 0x2c92 , 2613 , 1 } , { 0x0392 , 742 , 1 } , { 0x2161 , 2295 , 1 } , { 0xab92 , 1550 , 1 } , { 0xa792 , 3117 , 1 } , { 0x10c92 , 3411 , 1 } , { 0x118b0 , 3558 , 1 } , { 0x1f5f , 2199 , 1 } , { 0x1e8e , 1926 , 1 } , { 0x048e , 1091 , 1 } , { 0x018e , 453 , 1 } , { 0x1f8e , 159 , 2 } , { 0x2c8e , 2607 , 1 } , { 0x038e , 833 , 1 } , { 0xa692 , 2961 , 1 } , { 0xab8e , 1538 , 1 } , { 0x0055 , 59 , 1 } , { 0x10c8e , 3399 , 1 } , { 0x1f5d , 2196 , 1 } , { 0x212a , 27 , 1 } , { 0x04cb , 1181 , 1 } , { 0x01cb , 425 , 1 } , { 0x1fcb , 2241 , 1 } , { 0x118ae , 3552 , 1 } , { 0x0502 , 1265 , 1 } , { 0x00cb , 111 , 1 } , { 0xa68e , 2955 , 1 } , { 0x1e8a , 1920 , 1 } , { 0x048a , 1085 , 1 } , { 0x018a , 622 , 1 } , { 0x1f8a , 139 , 2 } , { 0x2c8a , 2601 , 1 } , { 0x038a , 736 , 1 } , { 0x2c67 , 2571 , 1 } , { 0xab8a , 1526 , 1 } , { 0x1e86 , 1914 , 1 } , { 0x10c8a , 3387 , 1 } , { 0x0186 , 616 , 1 } , { 0x1f86 , 159 , 2 } , { 0x2c86 , 2595 , 1 } , { 0x0386 , 727 , 1 } , { 0xff35 , 3219 , 1 } , { 0xab86 , 1514 , 1 } , { 0xa786 , 3108 , 1 } , { 0x10c86 , 3375 , 1 } , { 0xa68a , 2949 , 1 } , { 0x0555 , 1442 , 1 } , { 0x1ebc , 1980 , 1 } , { 0x04bc , 1160 , 1 } , { 0x01bc , 411 , 1 } , { 0x1fbc , 62 , 2 } , { 0x2cbc , 2676 , 1 } , { 0x1f5b , 2193 , 1 } , { 0xa686 , 2943 , 1 } , { 0xabbc , 1676 , 1 } , { 0x1eb8 , 1974 , 1 } , { 0x04b8 , 1154 , 1 } , { 0x01b8 , 408 , 1 } , { 0x1fb8 , 2268 , 1 } , { 0x2cb8 , 2670 , 1 } , { 0x01db , 450 , 1 } , { 0x1fdb , 2247 , 1 } , { 0xabb8 , 1664 , 1 } , { 0x10bc , 2829 , 1 } , { 0x00db , 156 , 1 } , { 0x1eb6 , 1971 , 1 } , { 0x04b6 , 1151 , 1 } , { 0xff33 , 3213 , 1 } , { 0x1fb6 , 58 , 2 } , { 0x2cb6 , 2667 , 1 } , { 0xff2a , 3186 , 1 } , { 0x10b8 , 2817 , 1 } , { 0xabb6 , 1658 , 1 } , { 0xa7b6 , 3153 , 1 } , { 0x10426 , 3351 , 1 } , { 0x1e26 , 1769 , 1 } , { 0x0426 , 956 , 1 } , { 0x0126 , 228 , 1 } , { 0x0053 , 52 , 1 } , { 0x2c26 , 2535 , 1 } , { 0x0057 , 65 , 1 } , { 0x10b6 , 2811 , 1 } , { 0x022a , 562 , 1 } , { 0xa726 , 2982 , 1 } , { 0x1e2e , 1781 , 1 } , { 0x042e , 980 , 1 } , { 0x012e , 240 , 1 } , { 0x1f2e , 2142 , 1 } , { 0x2c2e , 2559 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2167 , 2313 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa72e , 2994 , 1 } , { 0x1e2c , 1778 , 1 } , { 0x042c , 974 , 1 } , { 0x012c , 237 , 1 } , { 0x1f2c , 2136 , 1 } , { 0x2c2c , 2553 , 1 } , { 0x1f6f , 2223 , 1 } , { 0x2c6f , 604 , 1 } , { 0xabbf , 1685 , 1 } , { 0xa72c , 2991 , 1 } , { 0x1e28 , 1772 , 1 } , { 0x0428 , 962 , 1 } , { 0x0128 , 231 , 1 } , { 0x1f28 , 2124 , 1 } , { 0x2c28 , 2541 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0553 , 1436 , 1 } , { 0x10bf , 2838 , 1 } , { 0xa728 , 2985 , 1 } , { 0x0526 , 1319 , 1 } , { 0x0202 , 505 , 1 } , { 0x1e40 , 1808 , 1 } , { 0x10424 , 3345 , 1 } , { 0x1e24 , 1766 , 1 } , { 0x0424 , 950 , 1 } , { 0x0124 , 225 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c24 , 2529 , 1 } , { 0x052e , 1331 , 1 } , { 0xa740 , 3018 , 1 } , { 0x118bc , 3594 , 1 } , { 0xa724 , 2979 , 1 } , { 0x1ef2 , 2061 , 1 } , { 0x04f2 , 1241 , 1 } , { 0x01f2 , 483 , 1 } , { 0x1ff2 , 257 , 2 } , { 0x2cf2 , 2742 , 1 } , { 0x052c , 1328 , 1 } , { 0x118b8 , 3582 , 1 } , { 0xa640 , 2865 , 1 } , { 0x10422 , 3339 , 1 } , { 0x1e22 , 1763 , 1 } , { 0x0422 , 944 , 1 } , { 0x0122 , 222 , 1 } , { 0x2126 , 820 , 1 } , { 0x2c22 , 2523 , 1 } , { 0x0528 , 1322 , 1 } , { 0x01f1 , 483 , 1 } , { 0x118b6 , 3576 , 1 } , { 0xa722 , 2976 , 1 } , { 0x03f1 , 796 , 1 } , { 0x1ebe , 1983 , 1 } , { 0x04be , 1163 , 1 } , { 0xfb02 , 12 , 2 } , { 0x1fbe , 767 , 1 } , { 0x2cbe , 2679 , 1 } , { 0x01b5 , 405 , 1 } , { 0x0540 , 1379 , 1 } , { 0xabbe , 1682 , 1 } , { 0x0524 , 1316 , 1 } , { 0x00b5 , 779 , 1 } , { 0xabb5 , 1655 , 1 } , { 0x1eba , 1977 , 1 } , { 0x04ba , 1157 , 1 } , { 0x216f , 2337 , 1 } , { 0x1fba , 2226 , 1 } , { 0x2cba , 2673 , 1 } , { 0x10be , 2835 , 1 } , { 0x0051 , 46 , 1 } , { 0xabba , 1670 , 1 } , { 0x10b5 , 2808 , 1 } , { 0x1e6e , 1878 , 1 } , { 0x046e , 1055 , 1 } , { 0x016e , 330 , 1 } , { 0x1f6e , 2220 , 1 } , { 0x2c6e , 664 , 1 } , { 0x118bf , 3603 , 1 } , { 0x0522 , 1313 , 1 } , { 0x10ba , 2823 , 1 } , { 0xa76e , 3087 , 1 } , { 0x1eb4 , 1968 , 1 } , { 0x04b4 , 1148 , 1 } , { 0x2c75 , 2583 , 1 } , { 0x1fb4 , 50 , 2 } , { 0x2cb4 , 2664 , 1 } , { 0xab75 , 1463 , 1 } , { 0x1ec2 , 1989 , 1 } , { 0xabb4 , 1652 , 1 } , { 0xa7b4 , 3150 , 1 } , { 0x1fc2 , 253 , 2 } , { 0x2cc2 , 2685 , 1 } , { 0x03c2 , 800 , 1 } , { 0x00c2 , 83 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff26 , 3174 , 1 } , { 0x10b4 , 2805 , 1 } , { 0x1eca , 2001 , 1 } , { 0x0551 , 1430 , 1 } , { 0x01ca , 425 , 1 } , { 0x1fca , 2238 , 1 } , { 0x2cca , 2697 , 1 } , { 0x10c2 , 2847 , 1 } , { 0x00ca , 108 , 1 } , { 0xff2e , 3198 , 1 } , { 0x1e8c , 1923 , 1 } , { 0x048c , 1088 , 1 } , { 0x0226 , 556 , 1 } , { 0x1f8c , 149 , 2 } , { 0x2c8c , 2604 , 1 } , { 0x038c , 830 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab8c , 1532 , 1 } , { 0xff2c , 3192 , 1 } , { 0x10c8c , 3393 , 1 } , { 0x1ec4 , 1992 , 1 } , { 0x022e , 568 , 1 } , { 0x01c4 , 417 , 1 } , { 0x1fc4 , 54 , 2 } , { 0x2cc4 , 2688 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x00c4 , 89 , 1 } , { 0xff28 , 3180 , 1 } , { 0xa68c , 2952 , 1 } , { 0x01cf , 432 , 1 } , { 0x022c , 565 , 1 } , { 0x118be , 3600 , 1 } , { 0x03cf , 839 , 1 } , { 0x00cf , 123 , 1 } , { 0x118b5 , 3573 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c4 , 2853 , 1 } , { 0x216e , 2334 , 1 } , { 0x24cb , 2406 , 1 } , { 0x0228 , 559 , 1 } , { 0xff24 , 3168 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x118ba , 3588 , 1 } , { 0x1efe , 2079 , 1 } , { 0x04fe , 1259 , 1 } , { 0x01fe , 499 , 1 } , { 0x1e9e , 24 , 2 } , { 0x049e , 1115 , 1 } , { 0x03fe , 721 , 1 } , { 0x1f9e , 199 , 2 } , { 0x2c9e , 2631 , 1 } , { 0x039e , 786 , 1 } , { 0x0224 , 553 , 1 } , { 0xab9e , 1586 , 1 } , { 0xa79e , 3132 , 1 } , { 0x10c9e , 3447 , 1 } , { 0x01f7 , 414 , 1 } , { 0x1ff7 , 67 , 3 } , { 0xff22 , 3162 , 1 } , { 0x03f7 , 884 , 1 } , { 0x118b4 , 3570 , 1 } , { 0x049c , 1112 , 1 } , { 0x019c , 661 , 1 } , { 0x1f9c , 189 , 2 } , { 0x2c9c , 2628 , 1 } , { 0x039c , 779 , 1 } , { 0x24bc , 2361 , 1 } , { 0xab9c , 1580 , 1 } , { 0xa79c , 3129 , 1 } , { 0x10c9c , 3441 , 1 } , { 0x0222 , 550 , 1 } , { 0x1e7c , 1899 , 1 } , { 0x047c , 1076 , 1 } , { 0x1e82 , 1908 , 1 } , { 0x24b8 , 2349 , 1 } , { 0x0182 , 357 , 1 } , { 0x1f82 , 139 , 2 } , { 0x2c82 , 2589 , 1 } , { 0xab7c , 1484 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab82 , 1502 , 1 } , { 0xa782 , 3102 , 1 } , { 0x10c82 , 3363 , 1 } , { 0x2c63 , 1709 , 1 } , { 0x24b6 , 2343 , 1 } , { 0x1e80 , 1905 , 1 } , { 0x0480 , 1082 , 1 } , { 0x1f59 , 2190 , 1 } , { 0x1f80 , 129 , 2 } , { 0x2c80 , 2586 , 1 } , { 0x0059 , 71 , 1 } , { 0xa682 , 2937 , 1 } , { 0xab80 , 1496 , 1 } , { 0xa780 , 3099 , 1 } , { 0x10c80 , 3357 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1e4c , 1826 , 1 } , { 0x0145 , 270 , 1 } , { 0x014c , 279 , 1 } , { 0x1f4c , 2184 , 1 } , { 0x0345 , 767 , 1 } , { 0x0045 , 12 , 1 } , { 0x004c , 31 , 1 } , { 0xa680 , 2934 , 1 } , { 0xa74c , 3036 , 1 } , { 0x1e4a , 1823 , 1 } , { 0x01d5 , 441 , 1 } , { 0x014a , 276 , 1 } , { 0x1f4a , 2178 , 1 } , { 0x03d5 , 810 , 1 } , { 0x00d5 , 141 , 1 } , { 0x004a , 24 , 1 } , { 0x24bf , 2370 , 1 } , { 0xa74a , 3033 , 1 } , { 0xa64c , 2883 , 1 } , { 0x1041c , 3321 , 1 } , { 0x1e1c , 1754 , 1 } , { 0x041c , 926 , 1 } , { 0x011c , 213 , 1 } , { 0x1f1c , 2118 , 1 } , { 0x2c1c , 2505 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xa64a , 2880 , 1 } , { 0x1041a , 3315 , 1 } , { 0x1e1a , 1751 , 1 } , { 0x041a , 920 , 1 } , { 0x011a , 210 , 1 } , { 0x1f1a , 2112 , 1 } , { 0x2c1a , 2499 , 1 } , { 0xabbd , 1679 , 1 } , { 0x0545 , 1394 , 1 } , { 0x054c , 1415 , 1 } , { 0x10418 , 3309 , 1 } , { 0x1e18 , 1748 , 1 } , { 0x0418 , 914 , 1 } , { 0x0118 , 207 , 1 } , { 0x1f18 , 2106 , 1 } , { 0x2c18 , 2493 , 1 } , { 0x10bd , 2832 , 1 } , { 0x2163 , 2301 , 1 } , { 0x054a , 1409 , 1 } , { 0x1040e , 3279 , 1 } , { 0x1e0e , 1733 , 1 } , { 0x040e , 1028 , 1 } , { 0x010e , 192 , 1 } , { 0x1f0e , 2100 , 1 } , { 0x2c0e , 2463 , 1 } , { 0x1efc , 2076 , 1 } , { 0x04fc , 1256 , 1 } , { 0x01fc , 496 , 1 } , { 0x1ffc , 96 , 2 } , { 0x051c , 1304 , 1 } , { 0x1040c , 3273 , 1 } , { 0x1e0c , 1730 , 1 } , { 0x040c , 1022 , 1 } , { 0x010c , 189 , 1 } , { 0x1f0c , 2094 , 1 } , { 0x2c0c , 2457 , 1 } , { 0x1f6d , 2217 , 1 } , { 0x2c6d , 607 , 1 } , { 0x051a , 1301 , 1 } , { 0x24be , 2367 , 1 } , { 0x10408 , 3261 , 1 } , { 0x1e08 , 1724 , 1 } , { 0x0408 , 1010 , 1 } , { 0x0108 , 183 , 1 } , { 0x1f08 , 2082 , 1 } , { 0x2c08 , 2445 , 1 } , { 0x04c9 , 1178 , 1 } , { 0x0518 , 1298 , 1 } , { 0x1fc9 , 2235 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x24ba , 2355 , 1 } , { 0x00c9 , 105 , 1 } , { 0x10416 , 3303 , 1 } , { 0x1e16 , 1745 , 1 } , { 0x0416 , 908 , 1 } , { 0x0116 , 204 , 1 } , { 0x050e , 1283 , 1 } , { 0x2c16 , 2487 , 1 } , { 0x10414 , 3297 , 1 } , { 0x1e14 , 1742 , 1 } , { 0x0414 , 902 , 1 } , { 0x0114 , 201 , 1 } , { 0x042b , 971 , 1 } , { 0x2c14 , 2481 , 1 } , { 0x1f2b , 2133 , 1 } , { 0x2c2b , 2550 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x050c , 1280 , 1 } , { 0x10406 , 3255 , 1 } , { 0x1e06 , 1721 , 1 } , { 0x0406 , 1004 , 1 } , { 0x0106 , 180 , 1 } , { 0x13fb , 1697 , 1 } , { 0x2c06 , 2439 , 1 } , { 0x24c2 , 2379 , 1 } , { 0x118bd , 3597 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0508 , 1274 , 1 } , { 0x10404 , 3249 , 1 } , { 0x1e04 , 1718 , 1 } , { 0x0404 , 998 , 1 } , { 0x0104 , 177 , 1 } , { 0x1f95 , 194 , 2 } , { 0x2c04 , 2433 , 1 } , { 0x0395 , 752 , 1 } , { 0x24ca , 2403 , 1 } , { 0xab95 , 1559 , 1 } , { 0x0531 , 1334 , 1 } , { 0x10c95 , 3420 , 1 } , { 0x0516 , 1295 , 1 } , { 0x1e6c , 1875 , 1 } , { 0x046c , 1052 , 1 } , { 0x016c , 327 , 1 } , { 0x1f6c , 2214 , 1 } , { 0x216d , 2331 , 1 } , { 0x0514 , 1292 , 1 } , { 0x0245 , 697 , 1 } , { 0x024c , 598 , 1 } , { 0xa76c , 3084 , 1 } , { 0x10400 , 3237 , 1 } , { 0x1e00 , 1712 , 1 } , { 0x0400 , 986 , 1 } , { 0x0100 , 171 , 1 } , { 0x24c4 , 2385 , 1 } , { 0x2c00 , 2421 , 1 } , { 0x0506 , 1271 , 1 } , { 0x024a , 595 , 1 } , { 0x1fab , 224 , 2 } , { 0xa66c , 2931 , 1 } , { 0x03ab , 827 , 1 } , { 0x24cf , 2418 , 1 } , { 0xabab , 1625 , 1 } , { 0xa7ab , 631 , 1 } , { 0x10cab , 3486 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0504 , 1268 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x021c , 544 , 1 } , { 0x01a9 , 679 , 1 } , { 0x1fa9 , 214 , 2 } , { 0x10ab , 2778 , 1 } , { 0x03a9 , 820 , 1 } , { 0x212b , 92 , 1 } , { 0xaba9 , 1619 , 1 } , { 0x1e88 , 1917 , 1 } , { 0x10ca9 , 3480 , 1 } , { 0x021a , 541 , 1 } , { 0x1f88 , 129 , 2 } , { 0x2c88 , 2598 , 1 } , { 0x0388 , 730 , 1 } , { 0x13fd , 1703 , 1 } , { 0xab88 , 1520 , 1 } , { 0x10a9 , 2772 , 1 } , { 0x10c88 , 3381 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0218 , 538 , 1 } , { 0x0500 , 1262 , 1 } , { 0x1f4d , 2187 , 1 } , { 0x01a7 , 393 , 1 } , { 0x1fa7 , 244 , 2 } , { 0x004d , 34 , 1 } , { 0x03a7 , 814 , 1 } , { 0xa688 , 2946 , 1 } , { 0xaba7 , 1613 , 1 } , { 0x020e , 523 , 1 } , { 0x10ca7 , 3474 , 1 } , { 0x1e6a , 1872 , 1 } , { 0x046a , 1049 , 1 } , { 0x016a , 324 , 1 } , { 0x1f6a , 2208 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x216c , 2328 , 1 } , { 0x10a7 , 2766 , 1 } , { 0x01d1 , 435 , 1 } , { 0xa76a , 3081 , 1 } , { 0x020c , 520 , 1 } , { 0x03d1 , 762 , 1 } , { 0x00d1 , 129 , 1 } , { 0x1e68 , 1869 , 1 } , { 0x0468 , 1046 , 1 } , { 0x0168 , 321 , 1 } , { 0x1f68 , 2202 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xff31 , 3207 , 1 } , { 0xa66a , 2928 , 1 } , { 0x0208 , 514 , 1 } , { 0xa768 , 3078 , 1 } , { 0x1e64 , 1863 , 1 } , { 0x0464 , 1040 , 1 } , { 0x0164 , 315 , 1 } , { 0x054d , 1418 , 1 } , { 0x2c64 , 673 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xff2b , 3189 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa764 , 3072 , 1 } , { 0xa668 , 2925 , 1 } , { 0x0216 , 535 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x118ab , 3543 , 1 } , { 0x1e62 , 1860 , 1 } , { 0x0462 , 1037 , 1 } , { 0x0162 , 312 , 1 } , { 0x0214 , 532 , 1 } , { 0x2c62 , 655 , 1 } , { 0xa664 , 2919 , 1 } , { 0x1ed2 , 2013 , 1 } , { 0x04d2 , 1193 , 1 } , { 0xa762 , 3069 , 1 } , { 0x1fd2 , 20 , 3 } , { 0x2cd2 , 2709 , 1 } , { 0x118a9 , 3537 , 1 } , { 0x00d2 , 132 , 1 } , { 0x0206 , 511 , 1 } , { 0x10420 , 3333 , 1 } , { 0x1e20 , 1760 , 1 } , { 0x0420 , 938 , 1 } , { 0x0120 , 219 , 1 } , { 0xa662 , 2916 , 1 } , { 0x2c20 , 2517 , 1 } , { 0x1e60 , 1856 , 1 } , { 0x0460 , 1034 , 1 } , { 0x0160 , 309 , 1 } , { 0x0204 , 508 , 1 } , { 0x2c60 , 2562 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x24bd , 2364 , 1 } , { 0x216a , 2322 , 1 } , { 0xa760 , 3066 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xfb16 , 125 , 2 } , { 0x118a7 , 3531 , 1 } , { 0x1efa , 2073 , 1 } , { 0x04fa , 1253 , 1 } , { 0x01fa , 493 , 1 } , { 0x1ffa , 2262 , 1 } , { 0xfb14 , 109 , 2 } , { 0x03fa , 887 , 1 } , { 0xa660 , 2913 , 1 } , { 0x2168 , 2316 , 1 } , { 0x01b7 , 700 , 1 } , { 0x1fb7 , 10 , 3 } , { 0x1f6b , 2211 , 1 } , { 0x2c6b , 2577 , 1 } , { 0x0200 , 502 , 1 } , { 0xabb7 , 1661 , 1 } , { 0xfb06 , 29 , 2 } , { 0x1e56 , 1841 , 1 } , { 0x2164 , 2304 , 1 } , { 0x0156 , 294 , 1 } , { 0x1f56 , 62 , 3 } , { 0x0520 , 1310 , 1 } , { 0x004f , 40 , 1 } , { 0x0056 , 62 , 1 } , { 0x10b7 , 2814 , 1 } , { 0xa756 , 3051 , 1 } , { 0xfb04 , 5 , 3 } , { 0x1e78 , 1893 , 1 } , { 0x0478 , 1070 , 1 } , { 0x0178 , 168 , 1 } , { 0x1e54 , 1838 , 1 } , { 0x2162 , 2298 , 1 } , { 0x0154 , 291 , 1 } , { 0x1f54 , 57 , 3 } , { 0xab78 , 1472 , 1 } , { 0xa656 , 2898 , 1 } , { 0x0054 , 56 , 1 } , { 0x1e52 , 1835 , 1 } , { 0xa754 , 3048 , 1 } , { 0x0152 , 288 , 1 } , { 0x1f52 , 52 , 3 } , { 0x24c9 , 2400 , 1 } , { 0x1e32 , 1787 , 1 } , { 0x0052 , 49 , 1 } , { 0x0132 , 243 , 1 } , { 0xa752 , 3045 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xfb00 , 4 , 2 } , { 0xa654 , 2895 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa732 , 2997 , 1 } , { 0x2160 , 2292 , 1 } , { 0x054f , 1424 , 1 } , { 0x0556 , 1445 , 1 } , { 0x1e50 , 1832 , 1 } , { 0xa652 , 2892 , 1 } , { 0x0150 , 285 , 1 } , { 0x1f50 , 84 , 2 } , { 0x017b , 348 , 1 } , { 0x1e4e , 1829 , 1 } , { 0x0050 , 43 , 1 } , { 0x014e , 282 , 1 } , { 0xa750 , 3042 , 1 } , { 0xab7b , 1481 , 1 } , { 0xa77b , 3093 , 1 } , { 0x004e , 37 , 1 } , { 0x0554 , 1439 , 1 } , { 0xa74e , 3039 , 1 } , { 0x1e48 , 1820 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x216b , 2325 , 1 } , { 0x1f48 , 2172 , 1 } , { 0xa650 , 2889 , 1 } , { 0x0552 , 1433 , 1 } , { 0x0048 , 21 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa748 , 3030 , 1 } , { 0xa64e , 2886 , 1 } , { 0x0532 , 1337 , 1 } , { 0x1041e , 3327 , 1 } , { 0x1e1e , 1757 , 1 } , { 0x041e , 932 , 1 } , { 0x011e , 216 , 1 } , { 0x118b7 , 3579 , 1 } , { 0x2c1e , 2511 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa648 , 2877 , 1 } , { 0x1ff9 , 2253 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x03f9 , 878 , 1 } , { 0x0550 , 1427 , 1 } , { 0x10412 , 3291 , 1 } , { 0x1e12 , 1739 , 1 } , { 0x0412 , 896 , 1 } , { 0x0112 , 198 , 1 } , { 0x054e , 1421 , 1 } , { 0x2c12 , 2475 , 1 } , { 0x10410 , 3285 , 1 } , { 0x1e10 , 1736 , 1 } , { 0x0410 , 890 , 1 } , { 0x0110 , 195 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c10 , 2469 , 1 } , { 0x2132 , 2289 , 1 } , { 0x0548 , 1403 , 1 } , { 0x1ef8 , 2070 , 1 } , { 0x04f8 , 1250 , 1 } , { 0x01f8 , 490 , 1 } , { 0x1ff8 , 2250 , 1 } , { 0x0220 , 381 , 1 } , { 0x1ee2 , 2037 , 1 } , { 0x04e2 , 1217 , 1 } , { 0x01e2 , 462 , 1 } , { 0x1fe2 , 36 , 3 } , { 0x2ce2 , 2733 , 1 } , { 0x03e2 , 857 , 1 } , { 0x051e , 1307 , 1 } , { 0x1ede , 2031 , 1 } , { 0x04de , 1211 , 1 } , { 0x01de , 456 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2cde , 2727 , 1 } , { 0x03de , 851 , 1 } , { 0x00de , 165 , 1 } , { 0x1f69 , 2205 , 1 } , { 0x2c69 , 2574 , 1 } , { 0x1eda , 2025 , 1 } , { 0x04da , 1205 , 1 } , { 0x0512 , 1289 , 1 } , { 0x1fda , 2244 , 1 } , { 0x2cda , 2721 , 1 } , { 0x03da , 845 , 1 } , { 0x00da , 153 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0510 , 1286 , 1 } , { 0x1ed8 , 2022 , 1 } , { 0x04d8 , 1202 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fd8 , 2274 , 1 } , { 0x2cd8 , 2718 , 1 } , { 0x03d8 , 842 , 1 } , { 0x00d8 , 147 , 1 } , { 0x1ed6 , 2019 , 1 } , { 0x04d6 , 1199 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fd6 , 76 , 2 } , { 0x2cd6 , 2715 , 1 } , { 0x03d6 , 792 , 1 } , { 0x00d6 , 144 , 1 } , { 0x1ec8 , 1998 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x01c8 , 421 , 1 } , { 0x1fc8 , 2232 , 1 } , { 0x2cc8 , 2694 , 1 } , { 0xff32 , 3210 , 1 } , { 0x00c8 , 102 , 1 } , { 0x04c7 , 1175 , 1 } , { 0x01c7 , 421 , 1 } , { 0x1fc7 , 15 , 3 } , { 0x1ec0 , 1986 , 1 } , { 0x04c0 , 1187 , 1 } , { 0x00c7 , 99 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2cc0 , 2682 , 1 } , { 0x0179 , 345 , 1 } , { 0x00c0 , 77 , 1 } , { 0x0232 , 574 , 1 } , { 0x01b3 , 402 , 1 } , { 0x1fb3 , 62 , 2 } , { 0xab79 , 1475 , 1 } , { 0xa779 , 3090 , 1 } , { 0x10c7 , 2859 , 1 } , { 0xabb3 , 1649 , 1 } , { 0xa7b3 , 3156 , 1 } , { 0x1fa5 , 234 , 2 } , { 0x10c0 , 2841 , 1 } , { 0x03a5 , 807 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xaba5 , 1607 , 1 } , { 0x01b1 , 691 , 1 } , { 0x10ca5 , 3468 , 1 } , { 0x10b3 , 2802 , 1 } , { 0x2169 , 2319 , 1 } , { 0x024e , 601 , 1 } , { 0xabb1 , 1643 , 1 } , { 0xa7b1 , 682 , 1 } , { 0x10cb1 , 3504 , 1 } , { 0x10a5 , 2760 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x01af , 399 , 1 } , { 0x1faf , 244 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x0248 , 592 , 1 } , { 0x10b1 , 2796 , 1 } , { 0xabaf , 1637 , 1 } , { 0x1fad , 234 , 2 } , { 0x10caf , 3498 , 1 } , { 0x04cd , 1184 , 1 } , { 0x01cd , 429 , 1 } , { 0xabad , 1631 , 1 } , { 0xa7ad , 658 , 1 } , { 0x10cad , 3492 , 1 } , { 0x00cd , 117 , 1 } , { 0x10af , 2790 , 1 } , { 0x021e , 547 , 1 } , { 0x1fa3 , 224 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x03a3 , 800 , 1 } , { 0x10ad , 2784 , 1 } , { 0xaba3 , 1601 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10ca3 , 3462 , 1 } , { 0x10cd , 2862 , 1 } , { 0x1fa1 , 214 , 2 } , { 0x24b7 , 2346 , 1 } , { 0x03a1 , 796 , 1 } , { 0x0212 , 529 , 1 } , { 0xaba1 , 1595 , 1 } , { 0x10a3 , 2754 , 1 } , { 0x10ca1 , 3456 , 1 } , { 0x01d3 , 438 , 1 } , { 0x1fd3 , 25 , 3 } , { 0x0210 , 526 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x00d3 , 135 , 1 } , { 0x1e97 , 34 , 2 } , { 0x10a1 , 2748 , 1 } , { 0x0197 , 649 , 1 } , { 0x1f97 , 204 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x0397 , 759 , 1 } , { 0x1041d , 3324 , 1 } , { 0xab97 , 1565 , 1 } , { 0x041d , 929 , 1 } , { 0x10c97 , 3426 , 1 } , { 0x1f1d , 2121 , 1 } , { 0x2c1d , 2508 , 1 } , { 0x1e72 , 1884 , 1 } , { 0x0472 , 1061 , 1 } , { 0x0172 , 336 , 1 } , { 0x118b3 , 3567 , 1 } , { 0x2c72 , 2580 , 1 } , { 0x0372 , 712 , 1 } , { 0x1041b , 3318 , 1 } , { 0xab72 , 1454 , 1 } , { 0x041b , 923 , 1 } , { 0x118a5 , 3525 , 1 } , { 0x1f1b , 2115 , 1 } , { 0x2c1b , 2502 , 1 } , { 0x1e70 , 1881 , 1 } , { 0x0470 , 1058 , 1 } , { 0x0170 , 333 , 1 } , { 0x118b1 , 3561 , 1 } , { 0x2c70 , 610 , 1 } , { 0x0370 , 709 , 1 } , { 0x1e46 , 1817 , 1 } , { 0xab70 , 1448 , 1 } , { 0x1e66 , 1866 , 1 } , { 0x0466 , 1043 , 1 } , { 0x0166 , 318 , 1 } , { 0x1e44 , 1814 , 1 } , { 0x0046 , 15 , 1 } , { 0x118af , 3555 , 1 } , { 0xa746 , 3027 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa766 , 3075 , 1 } , { 0x0044 , 9 , 1 } , { 0x118ad , 3549 , 1 } , { 0xa744 , 3024 , 1 } , { 0x1e7a , 1896 , 1 } , { 0x047a , 1073 , 1 } , { 0x1e3a , 1799 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa646 , 2874 , 1 } , { 0x1f3a , 2154 , 1 } , { 0xa666 , 2922 , 1 } , { 0xab7a , 1478 , 1 } , { 0x118a3 , 3519 , 1 } , { 0xa644 , 2871 , 1 } , { 0xa73a , 3009 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1ef4 , 2064 , 1 } , { 0x04f4 , 1244 , 1 } , { 0x01f4 , 487 , 1 } , { 0x1ff4 , 101 , 2 } , { 0x118a1 , 3513 , 1 } , { 0x03f4 , 762 , 1 } , { 0x1eec , 2052 , 1 } , { 0x04ec , 1232 , 1 } , { 0x01ec , 477 , 1 } , { 0x1fec , 2286 , 1 } , { 0x0546 , 1397 , 1 } , { 0x03ec , 872 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x013f , 261 , 1 } , { 0x1f3f , 2169 , 1 } , { 0x0544 , 1391 , 1 } , { 0x1eea , 2049 , 1 } , { 0x04ea , 1229 , 1 } , { 0x01ea , 474 , 1 } , { 0x1fea , 2256 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x03ea , 869 , 1 } , { 0x1ee8 , 2046 , 1 } , { 0x04e8 , 1226 , 1 } , { 0x01e8 , 471 , 1 } , { 0x1fe8 , 2280 , 1 } , { 0x053a , 1361 , 1 } , { 0x03e8 , 866 , 1 } , { 0x1ee6 , 2043 , 1 } , { 0x04e6 , 1223 , 1 } , { 0x01e6 , 468 , 1 } , { 0x1fe6 , 88 , 2 } , { 0x1f4b , 2181 , 1 } , { 0x03e6 , 863 , 1 } , { 0x1e5e , 1853 , 1 } , { 0x004b , 27 , 1 } , { 0x015e , 306 , 1 } , { 0x2166 , 2310 , 1 } , { 0x1ee4 , 2040 , 1 } , { 0x04e4 , 1220 , 1 } , { 0x01e4 , 465 , 1 } , { 0x1fe4 , 80 , 2 } , { 0xa75e , 3063 , 1 } , { 0x03e4 , 860 , 1 } , { 0x1ee0 , 2034 , 1 } , { 0x04e0 , 1214 , 1 } , { 0x01e0 , 459 , 1 } , { 0x053f , 1376 , 1 } , { 0x2ce0 , 2730 , 1 } , { 0x03e0 , 854 , 1 } , { 0x1edc , 2028 , 1 } , { 0x04dc , 1208 , 1 } , { 0xa65e , 2910 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2cdc , 2724 , 1 } , { 0x03dc , 848 , 1 } , { 0x00dc , 159 , 1 } , { 0x1ed0 , 2010 , 1 } , { 0x04d0 , 1190 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0x2cd0 , 2706 , 1 } , { 0x03d0 , 742 , 1 } , { 0x00d0 , 126 , 1 } , { 0x1ecc , 2004 , 1 } , { 0x054b , 1412 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fcc , 71 , 2 } , { 0x2ccc , 2700 , 1 } , { 0x1ec6 , 1995 , 1 } , { 0x00cc , 114 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fc6 , 67 , 2 } , { 0x2cc6 , 2691 , 1 } , { 0x24c8 , 2397 , 1 } , { 0x00c6 , 96 , 1 } , { 0x04c5 , 1172 , 1 } , { 0x01c5 , 417 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fbb , 2229 , 1 } , { 0x24c7 , 2394 , 1 } , { 0x00c5 , 92 , 1 } , { 0x1fb9 , 2271 , 1 } , { 0xabbb , 1673 , 1 } , { 0x24c0 , 2373 , 1 } , { 0x04c3 , 1169 , 1 } , { 0xabb9 , 1667 , 1 } , { 0x1fc3 , 71 , 2 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0x00c3 , 86 , 1 } , { 0x10c5 , 2856 , 1 } , { 0x10bb , 2826 , 1 } , { 0x1ed4 , 2016 , 1 } , { 0x04d4 , 1196 , 1 } , { 0x10b9 , 2820 , 1 } , { 0x13fc , 1700 , 1 } , { 0x2cd4 , 2712 , 1 } , { 0x0246 , 589 , 1 } , { 0x00d4 , 138 , 1 } , { 0x10c3 , 2850 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xff3a , 3234 , 1 } , { 0x0244 , 688 , 1 } , { 0x019f , 670 , 1 } , { 0x1f9f , 204 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x039f , 789 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab9f , 1589 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c9f , 3450 , 1 } , { 0x019d , 667 , 1 } , { 0x1f9d , 194 , 2 } , { 0x023a , 2565 , 1 } , { 0x039d , 783 , 1 } , { 0x1e5a , 1847 , 1 } , { 0xab9d , 1583 , 1 } , { 0x015a , 300 , 1 } , { 0x10c9d , 3444 , 1 } , { 0x1e9b , 1856 , 1 } , { 0x24cd , 2412 , 1 } , { 0x005a , 74 , 1 } , { 0x1f9b , 184 , 2 } , { 0xa75a , 3057 , 1 } , { 0x039b , 776 , 1 } , { 0x1ece , 2007 , 1 } , { 0xab9b , 1577 , 1 } , { 0x1e99 , 42 , 2 } , { 0x10c9b , 3438 , 1 } , { 0x2cce , 2703 , 1 } , { 0x1f99 , 174 , 2 } , { 0x00ce , 120 , 1 } , { 0x0399 , 767 , 1 } , { 0xa65a , 2904 , 1 } , { 0xab99 , 1571 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c99 , 3432 , 1 } , { 0x0193 , 634 , 1 } , { 0x1f93 , 184 , 2 } , { 0x1e58 , 1844 , 1 } , { 0x0393 , 746 , 1 } , { 0x0158 , 297 , 1 } , { 0xab93 , 1553 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c93 , 3414 , 1 } , { 0x0058 , 68 , 1 } , { 0x042d , 977 , 1 } , { 0xa758 , 3054 , 1 } , { 0x1f2d , 2139 , 1 } , { 0x2c2d , 2556 , 1 } , { 0x118bb , 3591 , 1 } , { 0x0191 , 369 , 1 } , { 0x1f91 , 174 , 2 } , { 0x118b9 , 3585 , 1 } , { 0x0391 , 739 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab91 , 1547 , 1 } , { 0xa658 , 2901 , 1 } , { 0x10c91 , 3408 , 1 } , { 0x018f , 625 , 1 } , { 0x1f8f , 164 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x038f , 836 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab8f , 1541 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c8f , 3402 , 1 } , { 0x018b , 366 , 1 } , { 0x1f8b , 144 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x0187 , 363 , 1 } , { 0x1f87 , 164 , 2 } , { 0xab8b , 1529 , 1 } , { 0xa78b , 3111 , 1 } , { 0x10c8b , 3390 , 1 } , { 0xab87 , 1517 , 1 } , { 0x04c1 , 1166 , 1 } , { 0x10c87 , 3378 , 1 } , { 0x1e7e , 1902 , 1 } , { 0x047e , 1079 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x00c1 , 80 , 1 } , { 0x2c7e , 580 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xab7e , 1490 , 1 } , { 0xa77e , 3096 , 1 } , { 0x1e76 , 1890 , 1 } , { 0x0476 , 1067 , 1 } , { 0x0176 , 342 , 1 } , { 0x1e42 , 1811 , 1 } , { 0x10c1 , 2844 , 1 } , { 0x0376 , 715 , 1 } , { 0x1e36 , 1793 , 1 } , { 0xab76 , 1466 , 1 } , { 0x0136 , 249 , 1 } , { 0x0042 , 3 , 1 } , { 0x1e3e , 1805 , 1 } , { 0xa742 , 3021 , 1 } , { 0x1e38 , 1796 , 1 } , { 0x1f3e , 2166 , 1 } , { 0xa736 , 3003 , 1 } , { 0x1f38 , 2148 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0587 , 105 , 2 } , { 0xa73e , 3015 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa738 , 3006 , 1 } , { 0xa642 , 2868 , 1 } , { 0x1e5c , 1850 , 1 } , { 0x1e34 , 1790 , 1 } , { 0x015c , 303 , 1 } , { 0x0134 , 246 , 1 } , { 0x1ef6 , 2067 , 1 } , { 0x04f6 , 1247 , 1 } , { 0x01f6 , 372 , 1 } , { 0x1ff6 , 92 , 2 } , { 0xa75c , 3060 , 1 } , { 0xa734 , 3000 , 1 } , { 0x1ef0 , 2058 , 1 } , { 0x04f0 , 1238 , 1 } , { 0x01f0 , 20 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x1e30 , 1784 , 1 } , { 0x03f0 , 772 , 1 } , { 0x0130 , 261 , 2 } , { 0x0542 , 1385 , 1 } , { 0xa65c , 2907 , 1 } , { 0x1f83 , 144 , 2 } , { 0x0536 , 1349 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xab83 , 1505 , 1 } , { 0x053e , 1373 , 1 } , { 0x10c83 , 3366 , 1 } , { 0x0538 , 1355 , 1 } , { 0x1eee , 2055 , 1 } , { 0x04ee , 1235 , 1 } , { 0x01ee , 480 , 1 } , { 0x1f8d , 154 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x03ee , 875 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab8d , 1535 , 1 } , { 0xa78d , 643 , 1 } , { 0x10c8d , 3396 , 1 } , { 0x0534 , 1343 , 1 } , { 0x0181 , 613 , 1 } , { 0x1f81 , 134 , 2 } , { 0x013d , 258 , 1 } , { 0x1f3d , 2163 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab81 , 1499 , 1 } , { 0x017f , 52 , 1 } , { 0x10c81 , 3360 , 1 } , { 0x2c7f , 583 , 1 } , { 0x037f , 881 , 1 } , { 0xff2d , 3195 , 1 } , { 0xab7f , 1493 , 1 } , { 0x1e74 , 1887 , 1 } , { 0x0474 , 1064 , 1 } , { 0x0174 , 339 , 1 } , { 0x1e3c , 1802 , 1 } , { 0x0149 , 46 , 2 } , { 0x1f49 , 2175 , 1 } , { 0x1f3c , 2160 , 1 } , { 0xab74 , 1460 , 1 } , { 0x0049 , 3606 , 1 } , { 0x0143 , 267 , 1 } , { 0x24cc , 2409 , 1 } , { 0xa73c , 3012 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0043 , 6 , 1 } , { 0x0141 , 264 , 1 } , { 0x24c6 , 2391 , 1 } , { 0x013b , 255 , 1 } , { 0x1f3b , 2157 , 1 } , { 0x0041 , 0 , 1 } , { 0x0139 , 252 , 1 } , { 0x1f39 , 2151 , 1 } , { 0x24c5 , 2388 , 1 } , { 0x24bb , 2358 , 1 } , { 0x13fa , 1694 , 1 } , { 0x053d , 1370 , 1 } , { 0x24b9 , 2352 , 1 } , { 0x0429 , 965 , 1 } , { 0x2183 , 2340 , 1 } , { 0x1f29 , 2127 , 1 } , { 0x2c29 , 2544 , 1 } , { 0x24c3 , 2382 , 1 } , { 0x10427 , 3354 , 1 } , { 0x10425 , 3348 , 1 } , { 0x0427 , 959 , 1 } , { 0x0425 , 953 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c27 , 2538 , 1 } , { 0x2c25 , 2532 , 1 } , { 0x0549 , 1406 , 1 } , { 0x053c , 1367 , 1 } , { 0x10423 , 3342 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0423 , 947 , 1 } , { 0x0543 , 1388 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c23 , 2526 , 1 } , { 0xff36 , 3222 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0541 , 1382 , 1 } , { 0x10421 , 3336 , 1 } , { 0x053b , 1364 , 1 } , { 0x0421 , 941 , 1 } , { 0xff38 , 3228 , 1 } , { 0x0539 , 1358 , 1 } , { 0x2c21 , 2520 , 1 } , { 0x10419 , 3312 , 1 } , { 0x10417 , 3306 , 1 } , { 0x0419 , 917 , 1 } , { 0x0417 , 911 , 1 } , { 0x1f19 , 2109 , 1 } , { 0x2c19 , 2496 , 1 } , { 0x2c17 , 2490 , 1 } , { 0x023e , 2568 , 1 } , { 0xff34 , 3216 , 1 } , { 0x10415 , 3300 , 1 } , { 0x10413 , 3294 , 1 } , { 0x0415 , 905 , 1 } , { 0x0413 , 899 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c15 , 2484 , 1 } , { 0x2c13 , 2478 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x24ce , 2415 , 1 } , { 0x1040f , 3282 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x040f , 1031 , 1 } , { 0xff30 , 3204 , 1 } , { 0x1f0f , 2103 , 1 } , { 0x2c0f , 2466 , 1 } , { 0x1040d , 3276 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x040d , 1025 , 1 } , { 0x0147 , 273 , 1 } , { 0x1f0d , 2097 , 1 } , { 0x2c0d , 2460 , 1 } , { 0x1040b , 3270 , 1 } , { 0x0047 , 18 , 1 } , { 0x040b , 1019 , 1 } , { 0x0230 , 571 , 1 } , { 0x1f0b , 2091 , 1 } , { 0x2c0b , 2454 , 1 } , { 0x10409 , 3264 , 1 } , { 0x10405 , 3252 , 1 } , { 0x0409 , 1013 , 1 } , { 0x0405 , 1001 , 1 } , { 0x1f09 , 2085 , 1 } , { 0x2c09 , 2448 , 1 } , { 0x2c05 , 2436 , 1 } , { 0x10403 , 3246 , 1 } , { 0x10401 , 3240 , 1 } , { 0x0403 , 995 , 1 } , { 0x0401 , 989 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c03 , 2430 , 1 } , { 0x2c01 , 2424 , 1 } , { 0x13f9 , 1691 , 1 } , { 0x042f , 983 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1f2f , 2145 , 1 } , { 0x1041f , 3330 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x041f , 935 , 1 } , { 0x023d , 378 , 1 } , { 0x10411 , 3288 , 1 } , { 0x2c1f , 2514 , 1 } , { 0x0411 , 893 , 1 } , { 0x0547 , 1400 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c11 , 2472 , 1 } , { 0x10407 , 3258 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0407 , 1007 , 1 } , { 0x24c1 , 2376 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c07 , 2442 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x13f8 , 1688 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff39 , 3231 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0243 , 354 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0x0241 , 586 , 1 } , { 0xff29 , 3183 , 1 } , { 0x023b , 577 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff27 , 3177 , 1 } , { 0xff25 , 3171 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff23 , 3165 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff21 , 3159 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xfb17 , 117 , 2 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff2f , 3201 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xfb15 , 113 , 2 } , { 0xfb13 , 121 , 2 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xfb05 , 29 , 2 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xfb03 , 0 , 3 } , { 0xfb01 , 8 , 2 } } ; if ( 0 == 0 ) { int key = hash ( & code ) ; if ( key <= MAX_HASH_VALUE && key >= 0 ) { OnigCodePoint gcode = wordlist [ key ] . code ; <S2SV_StartBug> if ( code == gcode ) <S2SV_EndBug> return & wordlist [ key ] ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> code == gcode && wordlist [ key ] . index >= 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0807\n\n```\nCWE-119 char * suhosin_decrypt_single_cookie ( char * name , int name_len , char * value , int value_len , char * key , char * * where TSRMLS_DC ) { <S2SV_StartBug> char buffer [ 4096 ] ; <S2SV_EndBug> char buffer2 [ 4096 ] ; int o_name_len = name_len ; <S2SV_StartBug> char * buf = buffer , * buf2 = buffer2 , * d , * d_url ; <S2SV_EndBug> int l ; <S2SV_StartBug> if ( name_len > sizeof ( buffer ) - 2 ) { <S2SV_EndBug> buf = estrndup ( name , name_len ) ; <S2SV_StartBug> } else { <S2SV_EndBug> memcpy ( buf , name , name_len ) ; buf [ name_len ] = 0 ; } name_len = php_url_decode ( buf , name_len ) ; normalize_varname ( buf ) ; name_len = strlen ( buf ) ; if ( SUHOSIN_G ( cookie_plainlist ) ) { if ( zend_hash_exists ( SUHOSIN_G ( cookie_plainlist ) , buf , name_len + 1 ) ) { decrypt_return_plain : <S2SV_StartBug> if ( buf != buffer ) { <S2SV_EndBug> efree ( buf ) ; } memcpy ( * where , name , o_name_len ) ; * where += o_name_len ; * * where = '=' ; * where += 1 ; memcpy ( * where , value , value_len ) ; * where += value_len ; return * where ; } } else if ( SUHOSIN_G ( cookie_cryptlist ) ) { if ( ! zend_hash_exists ( SUHOSIN_G ( cookie_cryptlist ) , buf , name_len + 1 ) ) { goto decrypt_return_plain ; } } <S2SV_StartBug> if ( strlen ( value ) <= sizeof ( buffer2 ) - 2 ) { <S2SV_EndBug> memcpy ( buf2 , value , value_len ) ; buf2 [ value_len ] = 0 ; } else { buf2 = estrndup ( value , value_len ) ; } value_len = php_url_decode ( buf2 , value_len ) ; d = suhosin_decrypt_string ( buf2 , value_len , buf , name_len , key , & l , SUHOSIN_G ( cookie_checkraddr ) TSRMLS_CC ) ; if ( d == NULL ) { goto skip_cookie ; } d_url = php_url_encode ( d , l , & l ) ; efree ( d ) ; memcpy ( * where , name , o_name_len ) ; * where += o_name_len ; * * where = '=' ; * where += 1 ; memcpy ( * where , d_url , l ) ; * where += l ; efree ( d_url ) ; skip_cookie : <S2SV_StartBug> if ( buf != buffer ) { <S2SV_EndBug> efree ( buf ) ; } if ( buf2 != buffer2 ) { efree ( buf2 ) ; } return * where ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TSRMLS_DC ) { <S2SV_ModEnd> int o_name_len = <S2SV_ModStart> char * buf , * buf2 <S2SV_ModEnd> , * d <S2SV_ModStart> int l ; <S2SV_ModEnd> buf = estrndup <S2SV_ModStart> name_len ) ; <S2SV_ModEnd> name_len = php_url_decode <S2SV_ModStart> { decrypt_return_plain : efree ( buf ) ; <S2SV_ModEnd> memcpy ( * <S2SV_ModStart> ; } } buf2 = estrndup ( value , value_len ) ; <S2SV_ModEnd> value_len = php_url_decode <S2SV_ModStart> ; skip_cookie : efree ( buf ) ; efree ( buf2 ) ; <S2SV_ModEnd> return * where\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7514\n\n```\nCWE-125 static MagickBooleanType ReadPSDChannelPixels ( Image * image , const size_t channels , const size_t row , const ssize_t type , const unsigned char * pixels , ExceptionInfo * exception ) { Quantum pixel ; register const unsigned char * p ; register Quantum * q ; register ssize_t x ; size_t packet_size ; unsigned short nibble ; p = pixels ; q = GetAuthenticPixels ( image , 0 , row , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) return MagickFalse ; packet_size = GetPSDPacketSize ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( packet_size == 1 ) pixel = ScaleCharToQuantum ( * p ++ ) ; else { p = PushShortPixel ( MSBEndian , p , & nibble ) ; pixel = ScaleShortToQuantum ( nibble ) ; } switch ( type ) { case - 1 : { SetPixelAlpha ( image , pixel , q ) ; break ; } case - 2 : case 0 : { SetPixelRed ( image , pixel , q ) ; if ( channels == 1 || type == - 2 ) SetPixelGray ( image , pixel , q ) ; if ( image -> storage_class == PseudoClass ) { if ( packet_size == 1 ) SetPixelIndex ( image , ScaleQuantumToChar ( pixel ) , q ) ; else SetPixelIndex ( image , ScaleQuantumToShort ( pixel ) , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) ConstrainColormapIndex ( image , GetPixelIndex ( image , q ) , exception ) , q ) ; if ( image -> depth == 1 ) { ssize_t bit , number_bits ; number_bits = image -> columns - x ; if ( number_bits > 8 ) number_bits = 8 ; for ( bit = 0 ; bit < number_bits ; bit ++ ) { SetPixelIndex ( image , ( ( ( unsigned char ) pixel ) & ( 0x01 << ( 7 - bit ) ) ) != 0 ? 0 : 255 , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) <S2SV_StartBug> GetPixelIndex ( image , q ) , q ) ; <S2SV_EndBug> q += GetPixelChannels ( image ) ; x ++ ; } x -- ; continue ; } } break ; } case 1 : { if ( image -> storage_class == PseudoClass ) SetPixelAlpha ( image , pixel , q ) ; else SetPixelGreen ( image , pixel , q ) ; break ; } case 2 : { if ( image -> storage_class == PseudoClass ) SetPixelAlpha ( image , pixel , q ) ; else SetPixelBlue ( image , pixel , q ) ; break ; } case 3 : { if ( image -> colorspace == CMYKColorspace ) SetPixelBlack ( image , pixel , q ) ; else if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , pixel , q ) ; break ; } case 4 : { if ( ( IssRGBCompatibleColorspace ( image -> colorspace ) != MagickFalse ) && ( channels > 3 ) ) break ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , pixel , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } return ( SyncAuthenticPixels ( image , exception ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ssize_t ) ConstrainColormapIndex ( image , <S2SV_ModStart> image , q ) , exception\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4054\n\n```\nCWE-476 static bool handle_client_startup ( PgSocket * client , PktHdr * pkt ) { const char * passwd ; const uint8_t * key ; bool ok ; SBuf * sbuf = & client -> sbuf ; if ( incomplete_pkt ( pkt ) ) { disconnect_client ( client , true , \"client<S2SV_blank>sent<S2SV_blank>partial<S2SV_blank>pkt<S2SV_blank>in<S2SV_blank>startup<S2SV_blank>phase\" ) ; return false ; } if ( client -> wait_for_welcome ) { if ( finish_client_login ( client ) ) { sbuf_prepare_skip ( sbuf , pkt -> len ) ; return true ; } else return false ; } switch ( pkt -> type ) { case PKT_SSLREQ : slog_noise ( client , \"C:<S2SV_blank>req<S2SV_blank>SSL\" ) ; slog_noise ( client , \"P:<S2SV_blank>nak\" ) ; if ( ! sbuf_answer ( & client -> sbuf , \"N\" , 1 ) ) { disconnect_client ( client , false , \"failed<S2SV_blank>to<S2SV_blank>nak<S2SV_blank>SSL\" ) ; return false ; } break ; case PKT_STARTUP_V2 : disconnect_client ( client , true , \"Old<S2SV_blank>V2<S2SV_blank>protocol<S2SV_blank>not<S2SV_blank>supported\" ) ; return false ; case PKT_STARTUP : if ( client -> pool ) { disconnect_client ( client , true , \"client<S2SV_blank>re-sent<S2SV_blank>startup<S2SV_blank>pkt\" ) ; return false ; } if ( ! decide_startup_pool ( client , pkt ) ) return false ; if ( client -> pool -> db -> admin ) { if ( ! admin_pre_login ( client ) ) return false ; } if ( cf_auth_type <= AUTH_TRUST || client -> own_user ) { if ( ! finish_client_login ( client ) ) return false ; } else { if ( ! send_client_authreq ( client ) ) { disconnect_client ( client , false , \"failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>auth<S2SV_blank>req\" ) ; return false ; } } break ; case 'p' : <S2SV_StartBug> if ( cf_auth_type <= AUTH_TRUST ) { <S2SV_EndBug> disconnect_client ( client , true , \"unrequested<S2SV_blank>passwd<S2SV_blank>pkt\" ) ; return false ; } ok = mbuf_get_string ( & pkt -> data , & passwd ) ; if ( ok && check_client_passwd ( client , passwd ) ) { if ( ! finish_client_login ( client ) ) return false ; } else { disconnect_client ( client , true , \"Auth<S2SV_blank>failed\" ) ; return false ; } break ; case PKT_CANCEL : if ( mbuf_avail_for_read ( & pkt -> data ) == BACKENDKEY_LEN && mbuf_get_bytes ( & pkt -> data , BACKENDKEY_LEN , & key ) ) { memcpy ( client -> cancel_key , key , BACKENDKEY_LEN ) ; accept_cancel_request ( client ) ; } else disconnect_client ( client , false , \"bad<S2SV_blank>cancel<S2SV_blank>request\" ) ; return false ; default : disconnect_client ( client , false , \"bad<S2SV_blank>packet\" ) ; return false ; } sbuf_prepare_skip ( sbuf , pkt -> len ) ; client -> request_time = get_cached_time ( ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( ! client -> auth_user ) { disconnect_client ( client , true , \"client<S2SV_blank>password<S2SV_blank>pkt<S2SV_blank>before<S2SV_blank>startup<S2SV_blank>packet\" ) ; return false ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-79(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-26298\n\n```\nCWE-79 static int rndr_quote ( struct buf * ob , const struct buf * text , void * opaque ) { if ( ! text || ! text -> size ) return 0 ; <S2SV_StartBug> BUFPUTSL ( ob , \"<q>\" ) ; <S2SV_EndBug> bufput ( ob , text -> data , text -> size ) ; BUFPUTSL ( ob , \"</q>\" ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; struct html_renderopt * options = opaque ; <S2SV_ModStart> \"<q>\" ) ; if ( options -> flags & HTML_ESCAPE ) escape_html ( ob , text -> data , text -> size ) ; else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 static int cg_opendir ( const char * path , struct fuse_file_info * fi ) { struct fuse_context * fc = fuse_get_context ( ) ; const char * cgroup ; struct file_info * dir_info ; char * controller = NULL ; if ( ! fc ) return - EIO ; if ( strcmp ( path , \"/cgroup\" ) == 0 ) { cgroup = NULL ; controller = NULL ; } else { controller = pick_controller_from_path ( fc , path ) ; if ( ! controller ) return - EIO ; cgroup = find_cgroup_in_path ( path ) ; if ( ! cgroup ) { cgroup = \"/\" ; } } <S2SV_StartBug> if ( cgroup && ! fc_may_access ( fc , controller , cgroup , NULL , O_RDONLY ) ) { <S2SV_EndBug> return - EACCES ; } dir_info = malloc ( sizeof ( * dir_info ) ) ; if ( ! dir_info ) return - ENOMEM ; dir_info -> controller = must_copy_string ( controller ) ; dir_info -> cgroup = must_copy_string ( cgroup ) ; dir_info -> type = LXC_TYPE_CGDIR ; dir_info -> buf = NULL ; dir_info -> file = NULL ; dir_info -> buflen = 0 ; fi -> fh = ( unsigned long ) dir_info ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( cgroup ) { if ( ! caller_may_see_dir ( fc -> pid , controller , cgroup ) ) return - ENOENT ; if ( <S2SV_ModEnd> ! fc_may_access ( <S2SV_ModStart> O_RDONLY ) ) <S2SV_ModEnd> return - EACCES\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void validate_positive_rational ( const char * msg , <S2SV_EndBug> struct vpx_rational * rat ) { if ( rat -> den < 0 ) { rat -> num *= - 1 ; rat -> den *= - 1 ; } if ( rat -> num < 0 ) die ( \"Error:<S2SV_blank>%s<S2SV_blank>must<S2SV_blank>be<S2SV_blank>positive\\\\n\" , msg ) ; if ( ! rat -> den ) die ( \"Error:<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>zero<S2SV_blank>denominator\\\\n\" , msg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5093\n\n```\nCWE-125 static char * get_icu_value_internal ( const char * loc_name , char * tag_name , int * result , int fromParseLocale ) { char * tag_value = NULL ; int32_t tag_value_len = 512 ; int singletonPos = 0 ; char * mod_loc_name = NULL ; int grOffset = 0 ; int32_t buflen = 512 ; UErrorCode status = U_ZERO_ERROR ; if ( strcmp ( tag_name , LOC_CANONICALIZE_TAG ) != 0 ) { grOffset = findOffset ( LOC_GRANDFATHERED , loc_name ) ; if ( grOffset >= 0 ) { if ( strcmp ( tag_name , LOC_LANG_TAG ) == 0 ) { return estrdup ( loc_name ) ; } else { return NULL ; } } if ( fromParseLocale == 1 ) { if ( strcmp ( tag_name , LOC_LANG_TAG ) == 0 ) { if ( strlen ( loc_name ) > 1 && ( isIDPrefix ( loc_name ) == 1 ) ) { return estrdup ( loc_name ) ; } } singletonPos = getSingletonPos ( loc_name ) ; if ( singletonPos == 0 ) { return NULL ; } else if ( singletonPos > 0 ) { mod_loc_name = estrndup ( loc_name , singletonPos - 1 ) ; } } } if ( mod_loc_name == NULL ) { mod_loc_name = estrdup ( loc_name ) ; } do { tag_value = erealloc ( tag_value , buflen ) ; tag_value_len = buflen ; if ( strcmp ( tag_name , LOC_SCRIPT_TAG ) == 0 ) { buflen = uloc_getScript ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( strcmp ( tag_name , LOC_LANG_TAG ) == 0 ) { buflen = uloc_getLanguage ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( strcmp ( tag_name , LOC_REGION_TAG ) == 0 ) { buflen = uloc_getCountry ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( strcmp ( tag_name , LOC_VARIANT_TAG ) == 0 ) { buflen = uloc_getVariant ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( strcmp ( tag_name , LOC_CANONICALIZE_TAG ) == 0 ) { buflen = uloc_canonicalize ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( U_FAILURE ( status ) ) { if ( status == U_BUFFER_OVERFLOW_ERROR ) { status = U_ZERO_ERROR ; <S2SV_StartBug> continue ; <S2SV_EndBug> } * result = 0 ; if ( tag_value ) { efree ( tag_value ) ; } if ( mod_loc_name ) { efree ( mod_loc_name ) ; } return NULL ; } } while ( buflen > tag_value_len ) ; if ( buflen == 0 ) { * result = - 1 ; if ( tag_value ) { efree ( tag_value ) ; } if ( mod_loc_name ) { efree ( mod_loc_name ) ; } return NULL ; } else { * result = 1 ; } if ( mod_loc_name ) { efree ( mod_loc_name ) ; } return tag_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = U_ZERO_ERROR ; buflen ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15472\n\n```\nCWE-125 static void printFlow ( u_int16_t id , struct ndpi_flow_info * flow , u_int16_t thread_id ) { FILE * out = results_file ? results_file : stdout ; u_int8_t known_tls ; char buf [ 32 ] , buf1 [ 64 ] ; u_int i ; double dos_ge_score ; double dos_slow_score ; double dos_hulk_score ; double ddos_score ; double hearthbleed_score ; double ftp_patator_score ; double ssh_patator_score ; double inf_score ; if ( csv_fp != NULL ) { float data_ratio = ndpi_data_ratio ( flow -> src2dst_bytes , flow -> dst2src_bytes ) ; double f = ( double ) flow -> first_seen , l = ( double ) flow -> last_seen ; dos_ge_score = Dos_goldeneye_score ( flow ) ; dos_slow_score = Dos_slow_score ( flow ) ; dos_hulk_score = Dos_hulk_score ( flow ) ; ddos_score = Ddos_score ( flow ) ; hearthbleed_score = Hearthbleed_score ( flow ) ; ftp_patator_score = Ftp_patator_score ( flow ) ; ssh_patator_score = Ssh_patator_score ( flow ) ; inf_score = Infiltration_score ( flow ) ; double benign_score = dos_ge_score < 1 && dos_slow_score < 1 && dos_hulk_score < 1 && ddos_score < 1 && hearthbleed_score < 1 && ftp_patator_score < 1 && ssh_patator_score < 1 && inf_score < 1 ? 1.1 : 0 ; fprintf ( csv_fp , \"%u,%u,%.3f,%.3f,%.3f,%s,%u,%s,%u,\" , flow -> flow_id , flow -> protocol , f / 1000.0 , l / 1000.0 , ( l - f ) / 1000.0 , flow -> src_name , ntohs ( flow -> src_port ) , flow -> dst_name , ntohs ( flow -> dst_port ) ) ; fprintf ( csv_fp , \"%s,\" , ndpi_protocol2id ( ndpi_thread_info [ thread_id ] . workflow -> ndpi_struct , flow -> detected_protocol , buf , sizeof ( buf ) ) ) ; fprintf ( csv_fp , \"%s,%s,\" , ndpi_protocol2name ( ndpi_thread_info [ thread_id ] . workflow -> ndpi_struct , flow -> detected_protocol , buf , sizeof ( buf ) ) , flow -> host_server_name ) ; fprintf ( csv_fp , \"%.4lf,%.4lf,%.4lf,%.4lf,%.4lf,%.4lf,%.4lf,%.4lf,%.4lf,\" , benign_score , dos_slow_score , dos_ge_score , dos_hulk_score , ddos_score , hearthbleed_score , ftp_patator_score , ssh_patator_score , inf_score ) ; fprintf ( csv_fp , \"%u,%llu,%llu,\" , flow -> src2dst_packets , ( long long unsigned int ) flow -> src2dst_bytes , ( long long unsigned int ) flow -> src2dst_goodput_bytes ) ; fprintf ( csv_fp , \"%u,%llu,%llu,\" , flow -> dst2src_packets , ( long long unsigned int ) flow -> dst2src_bytes , ( long long unsigned int ) flow -> dst2src_goodput_bytes ) ; fprintf ( csv_fp , \"%.3f,%s,\" , data_ratio , ndpi_data_ratio2str ( data_ratio ) ) ; fprintf ( csv_fp , \"%.1f,%.1f,\" , 100.0 * ( ( float ) flow -> src2dst_goodput_bytes / ( float ) ( flow -> src2dst_bytes + 1 ) ) , 100.0 * ( ( float ) flow -> dst2src_goodput_bytes / ( float ) ( flow -> dst2src_bytes + 1 ) ) ) ; fprintf ( csv_fp , \"%u,%.1f,%u,%.1f,\" , ndpi_data_min ( flow -> iat_flow ) , ndpi_data_average ( flow -> iat_flow ) , ndpi_data_max ( flow -> iat_flow ) , ndpi_data_stddev ( flow -> iat_flow ) ) ; fprintf ( csv_fp , \"%u,%.1f,%u,%.1f,%u,%.1f,%u,%.1f,\" , ndpi_data_min ( flow -> iat_c_to_s ) , ndpi_data_average ( flow -> iat_c_to_s ) , ndpi_data_max ( flow -> iat_c_to_s ) , ndpi_data_stddev ( flow -> iat_c_to_s ) , ndpi_data_min ( flow -> iat_s_to_c ) , ndpi_data_average ( flow -> iat_s_to_c ) , ndpi_data_max ( flow -> iat_s_to_c ) , ndpi_data_stddev ( flow -> iat_s_to_c ) ) ; fprintf ( csv_fp , \"%u,%.1f,%u,%.1f,%u,%.1f,%u,%.1f,\" , ndpi_data_min ( flow -> pktlen_c_to_s ) , ndpi_data_average ( flow -> pktlen_c_to_s ) , ndpi_data_max ( flow -> pktlen_c_to_s ) , ndpi_data_stddev ( flow -> pktlen_c_to_s ) , ndpi_data_min ( flow -> pktlen_s_to_c ) , ndpi_data_average ( flow -> pktlen_s_to_c ) , ndpi_data_max ( flow -> pktlen_s_to_c ) , ndpi_data_stddev ( flow -> pktlen_s_to_c ) ) ; fprintf ( csv_fp , \"%d,%d,%d,%d,%d,%d,%d,%d,\" , flow -> cwr_count , flow -> ece_count , flow -> urg_count , flow -> ack_count , flow -> psh_count , flow -> rst_count , flow -> syn_count , flow -> fin_count ) ; fprintf ( csv_fp , \"%d,%d,%d,%d,%d,%d,%d,%d,\" , flow -> src2dst_cwr_count , flow -> src2dst_ece_count , flow -> src2dst_urg_count , flow -> src2dst_ack_count , flow -> src2dst_psh_count , flow -> src2dst_rst_count , flow -> src2dst_syn_count , flow -> src2dst_fin_count ) ; fprintf ( csv_fp , \"%d,%d,%d,%d,%d,%d,%d,%d,\" , flow -> dst2src_cwr_count , flow -> ece_count , flow -> urg_count , flow -> ack_count , flow -> psh_count , flow -> rst_count , flow -> syn_count , flow -> fin_count ) ; fprintf ( csv_fp , \"%u,%u,\" , flow -> c_to_s_init_win , flow -> s_to_c_init_win ) ; fprintf ( csv_fp , \"%s,%s,\" , ( flow -> ssh_tls . client_requested_server_name [ 0 ] != '\\\\0' ) ? flow -> ssh_tls . client_requested_server_name : \"\" , ( flow -> ssh_tls . server_info [ 0 ] != '\\\\0' ) ? flow -> ssh_tls . server_info : \"\" ) ; fprintf ( csv_fp , \"%s,%s,%s,%s,%s,\" , ( flow -> ssh_tls . ssl_version != 0 ) ? ndpi_ssl_version2str ( flow -> ssh_tls . ssl_version , & known_tls ) : \"0\" , ( flow -> ssh_tls . ja3_client [ 0 ] != '\\\\0' ) ? flow -> ssh_tls . ja3_client : \"\" , ( flow -> ssh_tls . ja3_client [ 0 ] != '\\\\0' ) ? is_unsafe_cipher ( flow -> ssh_tls . client_unsafe_cipher ) : \"0\" , ( flow -> ssh_tls . ja3_server [ 0 ] != '\\\\0' ) ? flow -> ssh_tls . ja3_server : \"\" , ( flow -> ssh_tls . ja3_server [ 0 ] != '\\\\0' ) ? is_unsafe_cipher ( flow -> ssh_tls . server_unsafe_cipher ) : \"0\" ) ; fprintf ( csv_fp , \"%s,%s,\" , flow -> ssh_tls . tls_alpn ? flow -> ssh_tls . tls_alpn : \"\" , flow -> ssh_tls . tls_supported_versions ? flow -> ssh_tls . tls_supported_versions : \"\" ) ; fprintf ( csv_fp , \"%s,%s,\" , flow -> ssh_tls . tls_issuerDN ? flow -> ssh_tls . tls_issuerDN : \"\" , flow -> ssh_tls . tls_subjectDN ? flow -> ssh_tls . tls_subjectDN : \"\" ) ; fprintf ( csv_fp , \"%s,%s\" , ( flow -> ssh_tls . client_hassh [ 0 ] != '\\\\0' ) ? flow -> ssh_tls . client_hassh : \"\" , ( flow -> ssh_tls . server_hassh [ 0 ] != '\\\\0' ) ? flow -> ssh_tls . server_hassh : \"\" ) ; fprintf ( csv_fp , \",%s\" , flow -> info ) ; } if ( ( verbose != 1 ) && ( verbose != 2 ) ) { if ( csv_fp && enable_joy_stats ) { flowGetBDMeanandVariance ( flow ) ; } if ( csv_fp ) fprintf ( csv_fp , \"\\\\n\" ) ; return ; } if ( csv_fp || ( verbose > 1 ) ) { # if 1 fprintf ( out , \"\\\\t%u\" , id ) ; # else fprintf ( out , \"\\\\t%u(%u)\" , id , flow -> flow_id ) ; # endif fprintf ( out , \"\\\\t%s<S2SV_blank>\" , ipProto2Name ( flow -> protocol ) ) ; fprintf ( out , \"%s%s%s:%u<S2SV_blank>%s<S2SV_blank>%s%s%s:%u<S2SV_blank>\" , ( flow -> ip_version == 6 ) ? \"[\" : \"\" , flow -> src_name , ( flow -> ip_version == 6 ) ? \"]\" : \"\" , ntohs ( flow -> src_port ) , flow -> bidirectional ? \"<->\" : \"->\" , ( flow -> ip_version == 6 ) ? \"[\" : \"\" , flow -> dst_name , ( flow -> ip_version == 6 ) ? \"]\" : \"\" , ntohs ( flow -> dst_port ) ) ; if ( flow -> vlan_id > 0 ) fprintf ( out , \"[VLAN:<S2SV_blank>%u]\" , flow -> vlan_id ) ; if ( enable_payload_analyzer ) fprintf ( out , \"[flowId:<S2SV_blank>%u]\" , flow -> flow_id ) ; } if ( enable_joy_stats ) { flowGetBDMeanandVariance ( flow ) ; fflush ( out ) ; fprintf ( out , \"[score:<S2SV_blank>%.4f]\" , flow -> entropy . score ) ; } if ( csv_fp ) fprintf ( csv_fp , \"\\\\n\" ) ; fprintf ( out , \"[proto:<S2SV_blank>\" ) ; if ( flow -> tunnel_type != ndpi_no_tunnel ) fprintf ( out , \"%s:\" , ndpi_tunnel2str ( flow -> tunnel_type ) ) ; fprintf ( out , \"%s/%s]\" , ndpi_protocol2id ( ndpi_thread_info [ thread_id ] . workflow -> ndpi_struct , flow -> detected_protocol , buf , sizeof ( buf ) ) , ndpi_protocol2name ( ndpi_thread_info [ thread_id ] . workflow -> ndpi_struct , flow -> detected_protocol , buf1 , sizeof ( buf1 ) ) ) ; if ( flow -> detected_protocol . category != 0 ) fprintf ( out , \"[cat:<S2SV_blank>%s/%u]\" , ndpi_category_get_name ( ndpi_thread_info [ thread_id ] . workflow -> ndpi_struct , flow -> detected_protocol . category ) , ( unsigned int ) flow -> detected_protocol . category ) ; fprintf ( out , \"[%u<S2SV_blank>pkts/%llu<S2SV_blank>bytes<S2SV_blank>\" , flow -> src2dst_packets , ( long long unsigned int ) flow -> src2dst_bytes ) ; fprintf ( out , \"%s<S2SV_blank>%u<S2SV_blank>pkts/%llu<S2SV_blank>bytes]\" , ( flow -> dst2src_packets > 0 ) ? \"<->\" : \"->\" , flow -> dst2src_packets , ( long long unsigned int ) flow -> dst2src_bytes ) ; fprintf ( out , \"[Goodput<S2SV_blank>ratio:<S2SV_blank>%.0f/%.0f]\" , 100.0 * ( ( float ) flow -> src2dst_goodput_bytes / ( float ) ( flow -> src2dst_bytes + 1 ) ) , 100.0 * ( ( float ) flow -> dst2src_goodput_bytes / ( float ) ( flow -> dst2src_bytes + 1 ) ) ) ; if ( flow -> last_seen > flow -> first_seen ) fprintf ( out , \"[%.2f<S2SV_blank>sec]\" , ( ( float ) ( flow -> last_seen - flow -> first_seen ) ) / ( float ) 1000 ) ; else fprintf ( out , \"[<<S2SV_blank>1<S2SV_blank>sec]\" ) ; if ( flow -> telnet . username [ 0 ] != '\\\\0' ) fprintf ( out , \"[Username:<S2SV_blank>%s]\" , flow -> telnet . username ) ; if ( flow -> telnet . password [ 0 ] != '\\\\0' ) fprintf ( out , \"[Password:<S2SV_blank>%s]\" , flow -> telnet . password ) ; if ( flow -> host_server_name [ 0 ] != '\\\\0' ) fprintf ( out , \"[Host:<S2SV_blank>%s]\" , flow -> host_server_name ) ; if ( flow -> info [ 0 ] != '\\\\0' ) fprintf ( out , \"[%s]\" , flow -> info ) ; if ( flow -> flow_extra_info [ 0 ] != '\\\\0' ) fprintf ( out , \"[%s]\" , flow -> flow_extra_info ) ; if ( ( flow -> src2dst_packets + flow -> dst2src_packets ) > 5 ) { if ( flow -> iat_c_to_s && flow -> iat_s_to_c ) { float data_ratio = ndpi_data_ratio ( flow -> src2dst_bytes , flow -> dst2src_bytes ) ; fprintf ( out , \"[bytes<S2SV_blank>ratio:<S2SV_blank>%.3f<S2SV_blank>(%s)]\" , data_ratio , ndpi_data_ratio2str ( data_ratio ) ) ; fprintf ( out , \"[IAT<S2SV_blank>c2s/s2c<S2SV_blank>min/avg/max/stddev:<S2SV_blank>%u/%u<S2SV_blank>%.0f/%.0f<S2SV_blank>%u/%u<S2SV_blank>%.0f/%.0f]\" , ndpi_data_min ( flow -> iat_c_to_s ) , ndpi_data_min ( flow -> iat_s_to_c ) , ( float ) ndpi_data_average ( flow -> iat_c_to_s ) , ( float ) ndpi_data_average ( flow -> iat_s_to_c ) , ndpi_data_max ( flow -> iat_c_to_s ) , ndpi_data_max ( flow -> iat_s_to_c ) , ( float ) ndpi_data_stddev ( flow -> iat_c_to_s ) , ( float ) ndpi_data_stddev ( flow -> iat_s_to_c ) ) ; fprintf ( out , \"[Pkt<S2SV_blank>Len<S2SV_blank>c2s/s2c<S2SV_blank>min/avg/max/stddev:<S2SV_blank>%u/%u<S2SV_blank>%.0f/%.0f<S2SV_blank>%u/%u<S2SV_blank>%.0f/%.0f]\" , ndpi_data_min ( flow -> pktlen_c_to_s ) , ndpi_data_min ( flow -> pktlen_s_to_c ) , ndpi_data_average ( flow -> pktlen_c_to_s ) , ndpi_data_average ( flow -> pktlen_s_to_c ) , ndpi_data_max ( flow -> pktlen_c_to_s ) , ndpi_data_max ( flow -> pktlen_s_to_c ) , ndpi_data_stddev ( flow -> pktlen_c_to_s ) , ndpi_data_stddev ( flow -> pktlen_s_to_c ) ) ; } } if ( flow -> http . url [ 0 ] != '\\\\0' ) { ndpi_risk_enum risk = ndpi_validate_url ( flow -> http . url ) ; if ( risk != NDPI_NO_RISK ) NDPI_SET_BIT ( flow -> risk , risk ) ; <S2SV_StartBug> fprintf ( out , \"[URL:<S2SV_blank>%s[StatusCode:<S2SV_blank>%u]\" , <S2SV_EndBug> flow -> http . url , flow -> http . response_status_code ) ; if ( flow -> http . content_type [ 0 ] != '\\\\0' ) <S2SV_StartBug> fprintf ( out , \"[ContentType:<S2SV_blank>%s]\" , flow -> http . content_type ) ; <S2SV_EndBug> if ( flow -> http . user_agent [ 0 ] != '\\\\0' ) <S2SV_StartBug> fprintf ( out , \"[UserAgent:<S2SV_blank>%s]\" , flow -> http . user_agent ) ; <S2SV_EndBug> } if ( flow -> risk ) { u_int i ; fprintf ( out , \"[Risk:<S2SV_blank>\" ) ; for ( i = 0 ; i < NDPI_MAX_RISK ; i ++ ) if ( NDPI_ISSET_BIT ( flow -> risk , i ) ) fprintf ( out , \"**<S2SV_blank>%s<S2SV_blank>**\" , ndpi_risk2str ( i ) ) ; fprintf ( out , \"]\" ) ; } if ( flow -> ssh_tls . ssl_version != 0 ) fprintf ( out , \"[%s]\" , ndpi_ssl_version2str ( flow -> ssh_tls . ssl_version , & known_tls ) ) ; if ( flow -> ssh_tls . client_requested_server_name [ 0 ] != '\\\\0' ) fprintf ( out , \"[Client:<S2SV_blank>%s]\" , flow -> ssh_tls . client_requested_server_name ) ; if ( flow -> ssh_tls . client_hassh [ 0 ] != '\\\\0' ) fprintf ( out , \"[HASSH-C:<S2SV_blank>%s]\" , flow -> ssh_tls . client_hassh ) ; if ( flow -> ssh_tls . ja3_client [ 0 ] != '\\\\0' ) fprintf ( out , \"[JA3C:<S2SV_blank>%s%s]\" , flow -> ssh_tls . ja3_client , print_cipher ( flow -> ssh_tls . client_unsafe_cipher ) ) ; if ( flow -> ssh_tls . server_info [ 0 ] != '\\\\0' ) fprintf ( out , \"[Server:<S2SV_blank>%s]\" , flow -> ssh_tls . server_info ) ; if ( flow -> ssh_tls . server_names ) fprintf ( out , \"[ServerNames:<S2SV_blank>%s]\" , flow -> ssh_tls . server_names ) ; if ( flow -> ssh_tls . server_hassh [ 0 ] != '\\\\0' ) fprintf ( out , \"[HASSH-S:<S2SV_blank>%s]\" , flow -> ssh_tls . server_hassh ) ; if ( flow -> ssh_tls . ja3_server [ 0 ] != '\\\\0' ) fprintf ( out , \"[JA3S:<S2SV_blank>%s%s]\" , flow -> ssh_tls . ja3_server , print_cipher ( flow -> ssh_tls . server_unsafe_cipher ) ) ; if ( flow -> ssh_tls . tls_issuerDN ) fprintf ( out , \"[Issuer:<S2SV_blank>%s]\" , flow -> ssh_tls . tls_issuerDN ) ; if ( flow -> ssh_tls . tls_subjectDN ) fprintf ( out , \"[Subject:<S2SV_blank>%s]\" , flow -> ssh_tls . tls_subjectDN ) ; if ( ( flow -> detected_protocol . master_protocol == NDPI_PROTOCOL_TLS ) || ( flow -> detected_protocol . app_protocol == NDPI_PROTOCOL_TLS ) ) { if ( flow -> ssh_tls . sha1_cert_fingerprint_set ) { fprintf ( out , \"[Certificate<S2SV_blank>SHA-1:<S2SV_blank>\" ) ; for ( i = 0 ; i < 20 ; i ++ ) fprintf ( out , \"%s%02X\" , ( i > 0 ) ? \":\" : \"\" , flow -> ssh_tls . sha1_cert_fingerprint [ i ] & 0xFF ) ; fprintf ( out , \"]\" ) ; } } if ( flow -> ssh_tls . notBefore && flow -> ssh_tls . notAfter ) { char notBefore [ 32 ] , notAfter [ 32 ] ; struct tm a , b ; struct tm * before = gmtime_r ( & flow -> ssh_tls . notBefore , & a ) ; struct tm * after = gmtime_r ( & flow -> ssh_tls . notAfter , & b ) ; strftime ( notBefore , sizeof ( notBefore ) , \"%F<S2SV_blank>%T\" , before ) ; strftime ( notAfter , sizeof ( notAfter ) , \"%F<S2SV_blank>%T\" , after ) ; fprintf ( out , \"[Validity:<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>%s]\" , notBefore , notAfter ) ; } if ( flow -> ssh_tls . server_cipher != '\\\\0' ) fprintf ( out , \"[Cipher:<S2SV_blank>%s]\" , ndpi_cipher2str ( flow -> ssh_tls . server_cipher ) ) ; if ( flow -> bittorent_hash [ 0 ] != '\\\\0' ) fprintf ( out , \"[BT<S2SV_blank>Hash:<S2SV_blank>%s]\" , flow -> bittorent_hash ) ; if ( flow -> dhcp_fingerprint [ 0 ] != '\\\\0' ) fprintf ( out , \"[DHCP<S2SV_blank>Fingerprint:<S2SV_blank>%s]\" , flow -> dhcp_fingerprint ) ; if ( flow -> has_human_readeable_strings ) fprintf ( out , \"[PLAIN<S2SV_blank>TEXT<S2SV_blank>(%s)]\" , flow -> human_readeable_string_buffer ) ; fprintf ( out , \"\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( out , \"[URL:<S2SV_blank>%s][StatusCode:<S2SV_blank>%u]\" <S2SV_ModEnd> , flow -> <S2SV_ModStart> ( out , \"[Content-Type:<S2SV_blank>%s]\" <S2SV_ModEnd> , flow -> <S2SV_ModStart> ( out , \"[User-Agent:<S2SV_blank>%s]\" <S2SV_ModEnd> , flow ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8068\n\n```\nCWE-119 static int set_register ( pegasus_t * pegasus , __u16 indx , __u8 data ) { <S2SV_StartBug> int ret ; <S2SV_EndBug> ret = usb_control_msg ( pegasus -> usb , usb_sndctrlpipe ( pegasus -> usb , 0 ) , PEGASUS_REQ_SET_REG , PEGASUS_REQT_WRITE , data , <S2SV_StartBug> indx , & data , 1 , 1000 ) ; <S2SV_EndBug> if ( ret < 0 ) netif_dbg ( pegasus , drv , pegasus -> net , \"%s<S2SV_blank>returned<S2SV_blank>%d\\\\n\" , __func__ , ret ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { u8 * buf ; int ret ; buf = kmemdup ( & data , 1 , GFP_NOIO ) ; if ( ! buf ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> , indx , buf <S2SV_ModEnd> , 1 , <S2SV_ModStart> ret ) ; kfree ( buf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { AVFilterContext * ctx = inlink -> dst ; FlipContext * s = ctx -> priv ; AVFilterLink * outlink = ctx -> outputs [ 0 ] ; AVFrame * out ; uint8_t * inrow , * outrow ; int i , j , plane , step ; out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; if ( av_pix_fmt_desc_get ( inlink -> format ) -> flags & AV_PIX_FMT_FLAG_PAL ) memcpy ( out -> data [ 1 ] , in -> data [ 1 ] , AVPALETTE_SIZE ) ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && in -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> const int width = ( plane == 1 || plane == 2 ) ? FF_CEIL_RSHIFT ( inlink -> w , s -> hsub ) : inlink -> w ; const int height = ( plane == 1 || plane == 2 ) ? FF_CEIL_RSHIFT ( inlink -> h , s -> vsub ) : inlink -> h ; step = s -> max_step [ plane ] ; outrow = out -> data [ plane ] ; inrow = in -> data [ plane ] + ( width - 1 ) * step ; for ( i = 0 ; i < height ; i ++ ) { switch ( step ) { case 1 : for ( j = 0 ; j < width ; j ++ ) outrow [ j ] = inrow [ - j ] ; break ; case 2 : { uint16_t * outrow16 = ( uint16_t * ) outrow ; uint16_t * inrow16 = ( uint16_t * ) inrow ; for ( j = 0 ; j < width ; j ++ ) outrow16 [ j ] = inrow16 [ - j ] ; } break ; case 3 : { uint8_t * in = inrow ; uint8_t * out = outrow ; for ( j = 0 ; j < width ; j ++ , out += 3 , in -= 3 ) { int32_t v = AV_RB24 ( in ) ; AV_WB24 ( out , v ) ; } } break ; case 4 : { uint32_t * outrow32 = ( uint32_t * ) outrow ; uint32_t * inrow32 = ( uint32_t * ) inrow ; for ( j = 0 ; j < width ; j ++ ) outrow32 [ j ] = inrow32 [ - j ] ; } break ; default : for ( j = 0 ; j < width ; j ++ ) memcpy ( outrow + j * step , inrow - j * step , step ) ; } inrow += in -> linesize [ plane ] ; outrow += out -> linesize [ plane ] ; } } av_frame_free ( & in ) ; return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ plane ] && in -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6536\n\n```\nCWE-200 static inline int verify_replay ( struct xfrm_usersa_info * p , struct nlattr * * attrs ) { struct nlattr * rt = attrs [ XFRMA_REPLAY_ESN_VAL ] ; <S2SV_StartBug> if ( ( p -> flags & XFRM_STATE_ESN ) && ! rt ) <S2SV_EndBug> <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> if ( ! rt ) return 0 ; if ( p -> id . proto != IPPROTO_ESP ) return - EINVAL ; if ( p -> replay_window != 0 ) return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> XFRMA_REPLAY_ESN_VAL ] ; struct xfrm_replay_state_esn * rs ; if <S2SV_ModEnd> ( p -> <S2SV_ModStart> & XFRM_STATE_ESN ) { if ( <S2SV_ModEnd> ! rt ) <S2SV_ModStart> - EINVAL ; rs = nla_data ( rt ) ; if ( rs -> bmp_len > XFRMA_REPLAY_ESN_MAX / sizeof ( rs -> bmp [ 0 ] ) / 8 ) return - EINVAL ; if ( nla_len ( rt ) < xfrm_replay_state_esn_len ( rs ) && nla_len ( rt ) != sizeof ( * rs ) ) return - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14461\n\n```\nCWE-125 static u_int ldp_pdu_print ( netdissect_options * ndo , register const u_char * pptr ) { const struct ldp_common_header * ldp_com_header ; const struct ldp_msg_header * ldp_msg_header ; const u_char * tptr , * msg_tptr ; u_short tlen ; u_short pdu_len , msg_len , msg_type , msg_tlen ; int hexdump , processed ; ldp_com_header = ( const struct ldp_common_header * ) pptr ; ND_TCHECK ( * ldp_com_header ) ; if ( EXTRACT_16BITS ( & ldp_com_header -> version ) != LDP_VERSION ) { ND_PRINT ( ( ndo , \"%sLDP<S2SV_blank>version<S2SV_blank>%u<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , ( ndo -> ndo_vflag < 1 ) ? \"\" : \"\\\\n\\\\t\" , EXTRACT_16BITS ( & ldp_com_header -> version ) ) ) ; return 0 ; } pdu_len = EXTRACT_16BITS ( & ldp_com_header -> pdu_length ) ; if ( pdu_len < sizeof ( const struct ldp_common_header ) - 4 ) { ND_PRINT ( ( ndo , \"%sLDP,<S2SV_blank>pdu-length:<S2SV_blank>%u<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( ndo -> ndo_vflag < 1 ) ? \"\" : \"\\\\n\\\\t\" , pdu_len , ( u_int ) ( sizeof ( const struct ldp_common_header ) - 4 ) ) ) ; return 0 ; } ND_PRINT ( ( ndo , \"%sLDP,<S2SV_blank>Label-Space-ID:<S2SV_blank>%s:%u,<S2SV_blank>pdu-length:<S2SV_blank>%u\" , ( ndo -> ndo_vflag < 1 ) ? \"\" : \"\\\\n\\\\t\" , ipaddr_string ( ndo , & ldp_com_header -> lsr_id ) , EXTRACT_16BITS ( & ldp_com_header -> label_space ) , pdu_len ) ) ; if ( ndo -> ndo_vflag < 1 ) return 0 ; tptr = pptr + sizeof ( const struct ldp_common_header ) ; tlen = pdu_len - ( sizeof ( const struct ldp_common_header ) - 4 ) ; while ( tlen > 0 ) { ND_TCHECK2 ( * tptr , sizeof ( struct ldp_msg_header ) ) ; ldp_msg_header = ( const struct ldp_msg_header * ) tptr ; msg_len = EXTRACT_16BITS ( ldp_msg_header -> length ) ; msg_type = LDP_MASK_MSG_TYPE ( EXTRACT_16BITS ( ldp_msg_header -> type ) ) ; if ( msg_len < sizeof ( struct ldp_msg_header ) - 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Message<S2SV_blank>(0x%04x),<S2SV_blank>length:<S2SV_blank>%u<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , tok2str ( ldp_msg_values , \"Unknown\" , msg_type ) , msg_type , msg_len , ( u_int ) ( sizeof ( struct ldp_msg_header ) - 4 ) ) ) ; return 0 ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Message<S2SV_blank>(0x%04x),<S2SV_blank>length:<S2SV_blank>%u,<S2SV_blank>Message<S2SV_blank>ID:<S2SV_blank>0x%08x,<S2SV_blank>Flags:<S2SV_blank>[%s<S2SV_blank>if<S2SV_blank>unknown]\" , tok2str ( ldp_msg_values , \"Unknown\" , msg_type ) , msg_type , msg_len , EXTRACT_32BITS ( & ldp_msg_header -> id ) , LDP_MASK_U_BIT ( EXTRACT_16BITS ( & ldp_msg_header -> type ) ) ? \"continue<S2SV_blank>processing\" : \"ignore\" ) ) ; msg_tptr = tptr + sizeof ( struct ldp_msg_header ) ; msg_tlen = msg_len - ( sizeof ( struct ldp_msg_header ) - 4 ) ; ND_TCHECK2 ( * tptr , msg_len ) ; hexdump = FALSE ; switch ( msg_type ) { case LDP_MSG_NOTIF : case LDP_MSG_HELLO : case LDP_MSG_INIT : case LDP_MSG_KEEPALIVE : case LDP_MSG_ADDRESS : case LDP_MSG_LABEL_MAPPING : case LDP_MSG_ADDRESS_WITHDRAW : case LDP_MSG_LABEL_WITHDRAW : while ( msg_tlen >= 4 ) { processed = ldp_tlv_print ( ndo , msg_tptr , msg_tlen ) ; if ( processed == 0 ) break ; msg_tlen -= processed ; msg_tptr += processed ; } break ; case LDP_MSG_LABEL_REQUEST : case LDP_MSG_LABEL_RELEASE : case LDP_MSG_LABEL_ABORT_REQUEST : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , msg_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , msg_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 || hexdump == TRUE ) print_unknown_data ( ndo , tptr + sizeof ( struct ldp_msg_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , msg_len ) ; tptr += msg_len + 4 ; tlen -= msg_len + 4 ; } return pdu_len + 4 ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>exceeded<S2SV_blank>snapshot\" ) ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"%s\" , tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 <S2SV_StartBug> static void mark_object ( struct object * obj , struct strbuf * path , <S2SV_EndBug> const char * name , void * data ) { update_progress ( data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6560\n\n```\nCWE-436 static gssize find_auth_end ( FlatpakProxyClient * client , Buffer * buffer ) { <S2SV_StartBug> guchar * match ; <S2SV_EndBug> int i ; if ( client -> auth_end_offset > 0 ) { gsize left = strlen ( AUTH_END_STRING ) - client -> auth_end_offset ; <S2SV_StartBug> gsize to_match = MIN ( left , buffer -> pos ) ; <S2SV_EndBug> <S2SV_StartBug> if ( memcmp ( buffer -> data , & AUTH_END_STRING [ client -> auth_end_offset ] , to_match ) == 0 ) <S2SV_EndBug> { client -> auth_end_offset += to_match ; if ( client -> auth_end_offset == strlen ( AUTH_END_STRING ) ) return to_match ; return - 1 ; } client -> auth_end_offset = - 1 ; } match = memmem ( buffer , buffer -> pos , AUTH_END_STRING , strlen ( AUTH_END_STRING ) ) ; if ( match != NULL ) <S2SV_StartBug> return match - buffer -> data + strlen ( AUTH_END_STRING ) ; <S2SV_EndBug> for ( i = MIN ( strlen ( AUTH_END_STRING ) - 1 , buffer -> pos ) ; i > 0 ; i -- ) { if ( memcmp ( buffer -> data + buffer -> pos - i , AUTH_END_STRING , i ) == 0 ) { client -> auth_end_offset = i ; break ; } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer ) { goffset offset = 0 ; gsize original_size = client -> auth_buffer -> len ; g_byte_array_append ( client -> auth_buffer <S2SV_ModEnd> , buffer -> <S2SV_ModStart> , buffer -> data , buffer -> <S2SV_ModStart> pos ) ; while ( TRUE ) { guint8 * line_start = client -> auth_buffer <S2SV_ModEnd> -> data + <S2SV_ModStart> -> data + offset ; gsize remaining_data = client -> auth_buffer -> len - offset ; guint8 * line_end ; line_end = memmem ( line_start , remaining_data , AUTH_LINE_SENTINEL , strlen ( AUTH_LINE_SENTINEL ) ) ; if ( line_end ) { offset = ( line_end + strlen ( AUTH_LINE_SENTINEL ) - line_start ) ; if ( ! auth_line_is_valid ( line_start , line_end ) ) return FIND_AUTH_END_ABORT ; * line_end = 0 ; if ( auth_line_is_begin ( line_start ) ) return offset - original_size ; } else { g_byte_array_remove_range ( client -> auth_buffer , 0 , offset ) ; if ( client -> auth_buffer -> len >= 16 * 1024 ) return FIND_AUTH_END_ABORT ; return FIND_AUTH_END_CONTINUE ; } } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12902\n\n```\nCWE-125 void zephyr_print ( netdissect_options * ndo , const u_char * cp , int length ) { struct z_packet z ; const char * parse = ( const char * ) cp ; int parselen = length ; const char * s ; int lose = 0 ; <S2SV_StartBug> z . kind = 0 ; <S2SV_EndBug> z . class = 0 ; z . inst = 0 ; z . opcode = 0 ; z . sender = 0 ; z . recipient = 0 ; <S2SV_StartBug> # define PARSE_STRING s = parse_field ( ndo , & parse , & parselen ) ; if ( ! s ) lose = 1 ; <S2SV_EndBug> # define PARSE_FIELD_INT ( field ) PARSE_STRING if ( ! lose ) field = strtol ( s , 0 , 16 ) ; # define PARSE_FIELD_STR ( field ) PARSE_STRING if ( ! lose ) field = s ; PARSE_FIELD_STR ( z . version ) ; if ( lose ) return ; if ( strncmp ( z . version , \"ZEPH\" , 4 ) ) return ; PARSE_FIELD_INT ( z . numfields ) ; PARSE_FIELD_INT ( z . kind ) ; PARSE_FIELD_STR ( z . uid ) ; PARSE_FIELD_INT ( z . port ) ; PARSE_FIELD_INT ( z . auth ) ; PARSE_FIELD_INT ( z . authlen ) ; PARSE_FIELD_STR ( z . authdata ) ; PARSE_FIELD_STR ( z . class ) ; PARSE_FIELD_STR ( z . inst ) ; PARSE_FIELD_STR ( z . opcode ) ; PARSE_FIELD_STR ( z . sender ) ; PARSE_FIELD_STR ( z . recipient ) ; PARSE_FIELD_STR ( z . format ) ; PARSE_FIELD_INT ( z . cksum ) ; PARSE_FIELD_INT ( z . multi ) ; PARSE_FIELD_STR ( z . multi_uid ) ; <S2SV_StartBug> if ( lose ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>[|zephyr]<S2SV_blank>(%d)\" , length ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>zephyr\" ) ) ; if ( strncmp ( z . version + 4 , \"0.2\" , 3 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>v%s\" , z . version + 4 ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( z_types , \"type<S2SV_blank>%d\" , z . kind ) ) ) ; if ( z . kind == Z_PACKET_SERVACK ) { const char * ackdata = NULL ; PARSE_FIELD_STR ( ackdata ) ; if ( ! lose && strcmp ( ackdata , \"SENT\" ) ) ND_PRINT ( ( ndo , \"/%s\" , str_to_lower ( ackdata ) ) ) ; } if ( * z . sender ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , z . sender ) ) ; if ( ! strcmp ( z . class , \"USER_LOCATE\" ) ) { if ( ! strcmp ( z . opcode , \"USER_HIDE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>hide\" ) ) ; else if ( ! strcmp ( z . opcode , \"USER_UNHIDE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>unhide\" ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>locate<S2SV_blank>%s\" , z . inst ) ) ; return ; } if ( ! strcmp ( z . class , \"ZEPHYR_ADMIN\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>zephyr-admin<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . class , \"ZEPHYR_CTL\" ) ) { if ( ! strcmp ( z . inst , \"CLIENT\" ) ) { if ( ! strcmp ( z . opcode , \"SUBSCRIBE\" ) || ! strcmp ( z . opcode , \"SUBSCRIBE_NODEFS\" ) || ! strcmp ( z . opcode , \"UNSUBSCRIBE\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%ssub%s\" , strcmp ( z . opcode , \"SUBSCRIBE\" ) ? \"un\" : \"\" , strcmp ( z . opcode , \"SUBSCRIBE_NODEFS\" ) ? \"\" : \"-nodefs\" ) ) ; if ( z . kind != Z_PACKET_SERVACK ) { const char * c = NULL , * i = NULL , * r = NULL ; PARSE_FIELD_STR ( c ) ; PARSE_FIELD_STR ( i ) ; PARSE_FIELD_STR ( r ) ; if ( ! lose ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , z_triple ( c , i , r ) ) ) ; } return ; } if ( ! strcmp ( z . opcode , \"GIMME\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ret\" ) ) ; return ; } if ( ! strcmp ( z . opcode , \"GIMMEDEFS\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>gimme-defs\" ) ) ; return ; } if ( ! strcmp ( z . opcode , \"CLEARSUB\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>clear-subs\" ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . inst , \"HM\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . inst , \"REALM\" ) ) { if ( ! strcmp ( z . opcode , \"ADD_SUBSCRIBE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>realm<S2SV_blank>add-subs\" ) ) ; if ( ! strcmp ( z . opcode , \"REQ_SUBSCRIBE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>realm<S2SV_blank>req-subs\" ) ) ; if ( ! strcmp ( z . opcode , \"RLM_SUBSCRIBE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>realm<S2SV_blank>rlm-sub\" ) ) ; if ( ! strcmp ( z . opcode , \"RLM_UNSUBSCRIBE\" ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>realm<S2SV_blank>rlm-unsub\" ) ) ; return ; } } if ( ! strcmp ( z . class , \"HM_CTL\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>hm_ctl<S2SV_blank>%s\" , str_to_lower ( z . inst ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . class , \"HM_STAT\" ) ) { if ( ! strcmp ( z . inst , \"HMST_CLIENT\" ) && ! strcmp ( z . opcode , \"GIMMESTATS\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>get-client-stats\" ) ) ; return ; } } if ( ! strcmp ( z . class , \"WG_CTL\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>wg_ctl<S2SV_blank>%s\" , str_to_lower ( z . inst ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } if ( ! strcmp ( z . class , \"LOGIN\" ) ) { if ( ! strcmp ( z . opcode , \"USER_FLUSH\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>flush_locs\" ) ) ; return ; } if ( ! strcmp ( z . opcode , \"NONE\" ) || ! strcmp ( z . opcode , \"OPSTAFF\" ) || ! strcmp ( z . opcode , \"REALM-VISIBLE\" ) || ! strcmp ( z . opcode , \"REALM-ANNOUNCED\" ) || ! strcmp ( z . opcode , \"NET-VISIBLE\" ) || ! strcmp ( z . opcode , \"NET-ANNOUNCED\" ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>set-exposure<S2SV_blank>%s\" , str_to_lower ( z . opcode ) ) ) ; return ; } } if ( ! * z . recipient ) z . recipient = \"*\" ; ND_PRINT ( ( ndo , \"<S2SV_blank>to<S2SV_blank>%s\" , z_triple ( z . class , z . inst , z . recipient ) ) ) ; if ( * z . opcode ) ND_PRINT ( ( ndo , \"<S2SV_blank>op<S2SV_blank>%s\" , z . opcode ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; int truncated = 0 ; <S2SV_ModStart> , & parselen , & truncated ) ; if ( truncated ) goto trunc <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( lose ) goto trunc ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|zephyr]<S2SV_blank>(%d)\" , length ) ) ; return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4129\n\n```\nCWE-20 static void br_multicast_del_pg ( struct net_bridge * br , struct net_bridge_port_group * pg ) { struct net_bridge_mdb_htable * mdb ; struct net_bridge_mdb_entry * mp ; struct net_bridge_port_group * p ; struct net_bridge_port_group __rcu * * pp ; mdb = mlock_dereference ( br -> mdb , br ) ; mp = br_mdb_ip_get ( mdb , & pg -> addr ) ; if ( WARN_ON ( ! mp ) ) return ; for ( pp = & mp -> ports ; ( p = mlock_dereference ( * pp , br ) ) != NULL ; pp = & p -> next ) { if ( p != pg ) continue ; rcu_assign_pointer ( * pp , p -> next ) ; hlist_del_init ( & p -> mglist ) ; del_timer ( & p -> timer ) ; call_rcu_bh ( & p -> rcu , br_multicast_free_pg ) ; <S2SV_StartBug> if ( ! mp -> ports && ! mp -> mglist && <S2SV_EndBug> netif_running ( br -> dev ) ) mod_timer ( & mp -> timer , jiffies ) ; return ; } WARN_ON ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mglist && mp -> timer_armed &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-13113\n\n```\nCWE-416 static void exif_mnote_data_canon_load ( ExifMnoteData * ne , const unsigned char * buf , unsigned int buf_size ) { ExifMnoteDataCanon * n = ( ExifMnoteDataCanon * ) ne ; ExifShort c ; size_t i , tcount , o , datao ; if ( ! n || ! buf || ! buf_size ) { exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } datao = 6 + n -> offset ; if ( CHECKOVERFLOW ( datao , buf_size , 2 ) ) { exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } c = exif_get_short ( buf + datao , n -> order ) ; datao += 2 ; exif_mnote_data_canon_clear ( n ) ; n -> entries = exif_mem_alloc ( ne -> mem , sizeof ( MnoteCanonEntry ) * c ) ; if ( ! n -> entries ) { EXIF_LOG_NO_MEMORY ( ne -> log , \"ExifMnoteCanon\" , sizeof ( MnoteCanonEntry ) * c ) ; return ; } tcount = 0 ; for ( i = c , o = datao ; i ; -- i , o += 12 ) { size_t s ; <S2SV_StartBug> if ( CHECKOVERFLOW ( o , buf_size , 12 ) ) { <S2SV_EndBug> exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Short<S2SV_blank>MakerNote\" ) ; break ; } n -> entries [ tcount ] . tag = exif_get_short ( buf + o , n -> order ) ; n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; n -> entries [ tcount ] . order = n -> order ; exif_log ( ne -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteCanon\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_canon_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; if ( exif_format_get_size ( n -> entries [ tcount ] . format ) && buf_size / exif_format_get_size ( n -> entries [ tcount ] . format ) < n -> entries [ tcount ] . components ) { exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Tag<S2SV_blank>size<S2SV_blank>overflow<S2SV_blank>detected<S2SV_blank>(%u<S2SV_blank>*<S2SV_blank>%lu)\" , exif_format_get_size ( n -> entries [ tcount ] . format ) , n -> entries [ tcount ] . components ) ; continue ; } s = exif_format_get_size ( n -> entries [ tcount ] . format ) * n -> entries [ tcount ] . components ; n -> entries [ tcount ] . size = s ; if ( ! s ) { exif_log ( ne -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteCanon\" , \"Invalid<S2SV_blank>zero-length<S2SV_blank>tag<S2SV_blank>size\" ) ; continue ; } else { size_t dataofs = o + 8 ; if ( s > 4 ) dataofs = exif_get_long ( buf + dataofs , n -> order ) + 6 ; if ( CHECKOVERFLOW ( dataofs , buf_size , s ) ) { exif_log ( ne -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteCanon\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) ( dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( ne -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( ne -> log , \"ExifMnoteCanon\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs , s ) ; } ++ tcount ; } n -> count = tcount ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t s ; memset ( & n -> entries [ tcount ] , 0 , sizeof ( MnoteCanonEntry ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10270\n\n```\nCWE-125 static void ChopUpSingleUncompressedStrip ( TIFF * tif ) { register TIFFDirectory * td = & tif -> tif_dir ; uint64 bytecount ; uint64 offset ; uint32 rowblock ; uint64 rowblockbytes ; uint64 stripbytes ; uint32 strip ; <S2SV_StartBug> uint64 nstrips64 ; <S2SV_EndBug> uint32 nstrips32 ; uint32 rowsperstrip ; uint64 * newcounts ; uint64 * newoffsets ; bytecount = td -> td_stripbytecount [ 0 ] ; offset = td -> td_stripoffset [ 0 ] ; assert ( td -> td_planarconfig == PLANARCONFIG_CONTIG ) ; if ( ( td -> td_photometric == PHOTOMETRIC_YCBCR ) && ( ! isUpSampled ( tif ) ) ) rowblock = td -> td_ycbcrsubsampling [ 1 ] ; else rowblock = 1 ; rowblockbytes = TIFFVTileSize64 ( tif , rowblock ) ; if ( rowblockbytes > STRIP_SIZE_DEFAULT ) { stripbytes = rowblockbytes ; rowsperstrip = rowblock ; } else if ( rowblockbytes > 0 ) { uint32 rowblocksperstrip ; rowblocksperstrip = ( uint32 ) ( STRIP_SIZE_DEFAULT / rowblockbytes ) ; rowsperstrip = rowblocksperstrip * rowblock ; stripbytes = rowblocksperstrip * rowblockbytes ; } else return ; if ( rowsperstrip >= td -> td_rowsperstrip ) return ; <S2SV_StartBug> nstrips64 = TIFFhowmany_64 ( bytecount , stripbytes ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( nstrips64 == 0 ) || ( nstrips64 > 0xFFFFFFFF ) ) <S2SV_EndBug> return ; nstrips32 = ( uint32 ) nstrips64 ; <S2SV_StartBug> newcounts = ( uint64 * ) _TIFFCheckMalloc ( tif , nstrips32 , sizeof ( uint64 ) , <S2SV_EndBug> \"for<S2SV_blank>chopped<S2SV_blank>\\\\\"StripByteCounts\\\\\"<S2SV_blank>array\" ) ; <S2SV_StartBug> newoffsets = ( uint64 * ) _TIFFCheckMalloc ( tif , nstrips32 , sizeof ( uint64 ) , <S2SV_EndBug> \"for<S2SV_blank>chopped<S2SV_blank>\\\\\"StripOffsets\\\\\"<S2SV_blank>array\" ) ; if ( newcounts == NULL || newoffsets == NULL ) { if ( newcounts != NULL ) _TIFFfree ( newcounts ) ; if ( newoffsets != NULL ) _TIFFfree ( newoffsets ) ; return ; } <S2SV_StartBug> for ( strip = 0 ; strip < nstrips32 ; strip ++ ) { <S2SV_EndBug> if ( stripbytes > bytecount ) stripbytes = bytecount ; newcounts [ strip ] = stripbytes ; <S2SV_StartBug> newoffsets [ strip ] = offset ; <S2SV_EndBug> offset += stripbytes ; bytecount -= stripbytes ; } <S2SV_StartBug> td -> td_stripsperimage = td -> td_nstrips = nstrips32 ; <S2SV_EndBug> TIFFSetField ( tif , TIFFTAG_ROWSPERSTRIP , rowsperstrip ) ; _TIFFfree ( td -> td_stripbytecount ) ; _TIFFfree ( td -> td_stripoffset ) ; td -> td_stripbytecount = newcounts ; td -> td_stripoffset = newoffsets ; td -> td_stripbytecountsorted = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32 strip ; uint32 nstrips <S2SV_ModEnd> ; uint32 rowsperstrip <S2SV_ModStart> ) return ; nstrips = TIFFhowmany_32 ( td -> td_imagelength , rowsperstrip ) ; if ( nstrips <S2SV_ModEnd> == 0 ) <S2SV_ModStart> == 0 ) return ; <S2SV_ModEnd> newcounts = ( <S2SV_ModStart> ( tif , nstrips <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> ( tif , nstrips <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> ; strip < nstrips <S2SV_ModEnd> ; strip ++ <S2SV_ModStart> strip ] = stripbytes ? offset : 0 <S2SV_ModEnd> ; offset += <S2SV_ModStart> -> td_nstrips = nstrips <S2SV_ModEnd> ; TIFFSetField (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6701\n\n```\nCWE-000 <S2SV_StartBug> static ssize_t aio_setup_single_vector ( struct kiocb * kiocb ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> kiocb -> ki_iovec = & kiocb -> ki_inline_vec ; kiocb -> ki_iovec -> iov_base = kiocb -> ki_buf ; <S2SV_StartBug> kiocb -> ki_iovec -> iov_len = kiocb -> ki_left ; <S2SV_EndBug> kiocb -> ki_nr_segs = 1 ; kiocb -> ki_cur_seg = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ssize_t aio_setup_single_vector ( int type , struct file * file , <S2SV_ModStart> kiocb ) { int bytes ; bytes = rw_verify_area ( type , file , & kiocb -> ki_pos , kiocb -> ki_left ) ; if ( bytes < 0 ) return bytes ; <S2SV_ModStart> -> iov_len = bytes <S2SV_ModEnd> ; kiocb ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0749\n\n```\nCWE-119 int disrsi_ ( int stream , int * negate , unsigned * value , unsigned count ) { int c ; unsigned locval ; unsigned ndigs ; char * cp ; char scratch [ DIS_BUFSIZ + 1 ] ; assert ( negate != NULL ) ; assert ( value != NULL ) ; assert ( count ) ; assert ( stream >= 0 ) ; assert ( dis_getc != NULL ) ; assert ( dis_gets != NULL ) ; memset ( scratch , 0 , DIS_BUFSIZ + 1 ) ; if ( dis_umaxd == 0 ) disiui_ ( ) ; <S2SV_StartBug> switch ( c = ( * dis_getc ) ( stream ) ) <S2SV_EndBug> { case '-' : case '+' : * negate = c == '-' ; if ( ( * dis_gets ) ( stream , scratch , count ) != ( int ) count ) { return ( DIS_EOD ) ; } if ( count >= dis_umaxd ) { if ( count > dis_umaxd ) goto overflow ; if ( memcmp ( scratch , dis_umax , dis_umaxd ) > 0 ) goto overflow ; } cp = scratch ; locval = 0 ; do { if ( ( ( c = * cp ++ ) < '0' ) || ( c > '9' ) ) { return ( DIS_NONDIGIT ) ; } locval = 10 * locval + c - '0' ; } while ( -- count ) ; * value = locval ; return ( DIS_SUCCESS ) ; break ; case '0' : return ( DIS_LEADZRO ) ; break ; case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : ndigs = c - '0' ; if ( count > 1 ) { if ( ( * dis_gets ) ( stream , scratch + 1 , count - 1 ) != ( int ) count - 1 ) { return ( DIS_EOD ) ; } cp = scratch ; if ( count >= dis_umaxd ) { if ( count > dis_umaxd ) break ; * cp = c ; if ( memcmp ( scratch , dis_umax , dis_umaxd ) > 0 ) break ; } while ( -- count ) { if ( ( ( c = * ++ cp ) < '0' ) || ( c > '9' ) ) { return ( DIS_NONDIGIT ) ; } ndigs = 10 * ndigs + c - '0' ; } } return ( disrsi_ ( stream , negate , value , ndigs ) ) ; break ; case - 1 : return ( DIS_EOD ) ; break ; case - 2 : return ( DIS_EOF ) ; break ; default : return ( DIS_NONDIGIT ) ; break ; } * negate = FALSE ; overflow : * value = UINT_MAX ; return ( DIS_OVERFLOW ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; if ( count >= dis_umaxd ) { if ( count > dis_umaxd ) goto overflow ; if ( memcmp ( scratch , dis_umax , dis_umaxd ) > 0 ) goto overflow ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17351\n\n```\nCWE-400 static int add_ballooned_pages ( int nr_pages ) { enum bp_state st ; if ( xen_hotplug_unpopulated ) { st = reserve_additional_memory ( ) ; if ( st != BP_ECANCELED ) { mutex_unlock ( & balloon_mutex ) ; wait_event ( balloon_wq , ! list_empty ( & ballooned_pages ) ) ; mutex_lock ( & balloon_mutex ) ; return 0 ; } } <S2SV_StartBug> st = decrease_reservation ( nr_pages , GFP_USER ) ; <S2SV_EndBug> if ( st != BP_DONE ) return - ENOMEM ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( si_mem_available ( ) < nr_pages ) return - ENOMEM ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 static int rose_parse_ccitt ( unsigned char * p , struct rose_facilities_struct * facilities , int len ) { unsigned char l , n = 0 ; char callsign [ 11 ] ; do { switch ( * p & 0xC0 ) { case 0x00 : <S2SV_StartBug> p += 2 ; <S2SV_EndBug> n += 2 ; len -= 2 ; break ; case 0x40 : <S2SV_StartBug> p += 3 ; <S2SV_EndBug> n += 3 ; len -= 3 ; break ; case 0x80 : <S2SV_StartBug> p += 4 ; <S2SV_EndBug> n += 4 ; len -= 4 ; break ; case 0xC0 : <S2SV_StartBug> l = p [ 1 ] ; <S2SV_EndBug> if ( l < 10 || l > 20 ) return - 1 ; if ( * p == FAC_CCITT_DEST_NSAP ) { memcpy ( & facilities -> source_addr , p + 7 , ROSE_ADDR_LEN ) ; memcpy ( callsign , p + 12 , l - 10 ) ; callsign [ l - 10 ] = '\\\\0' ; asc2ax ( & facilities -> source_call , callsign ) ; } if ( * p == FAC_CCITT_SRC_NSAP ) { memcpy ( & facilities -> dest_addr , p + 7 , ROSE_ADDR_LEN ) ; memcpy ( callsign , p + 12 , l - 10 ) ; callsign [ l - 10 ] = '\\\\0' ; asc2ax ( & facilities -> dest_call , callsign ) ; } p += l + 2 ; n += l + 2 ; len -= l + 2 ; break ; } } while ( * p != 0x00 && len > 0 ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 0x00 : if ( len < 2 ) return - 1 ; <S2SV_ModStart> case 0x40 : if ( len < 3 ) return - 1 ; <S2SV_ModStart> case 0x80 : if ( len < 4 ) return - 1 ; <S2SV_ModStart> case 0xC0 : if ( len < 2 ) return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int nr_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct sockaddr_ax25 * sax = ( struct sockaddr_ax25 * ) msg -> msg_name ; size_t copied ; struct sk_buff * skb ; int er ; lock_sock ( sk ) ; if ( sk -> sk_state != TCP_ESTABLISHED ) { release_sock ( sk ) ; return - ENOTCONN ; } if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) { release_sock ( sk ) ; return er ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } er = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( er < 0 ) { skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return er ; } if ( sax != NULL ) { memset ( sax , 0 , sizeof ( * sax ) ) ; sax -> sax25_family = AF_NETROM ; skb_copy_from_linear_data_offset ( skb , 7 , sax -> sax25_call . ax25_call , AX25_ADDR_LEN ) ; <S2SV_StartBug> } <S2SV_EndBug> msg -> msg_namelen = sizeof ( * sax ) ; <S2SV_StartBug> skb_free_datagram ( sk , skb ) ; <S2SV_EndBug> release_sock ( sk ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> AX25_ADDR_LEN ) ; <S2SV_ModEnd> msg -> msg_namelen <S2SV_ModStart> sax ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t httpClientSetMethod ( HttpClientContext * context , const char_t * method ) { size_t m ; size_t n ; char_t * p ; if ( context == NULL || method == NULL ) return ERROR_INVALID_PARAMETER ; n = osStrlen ( method ) ; if ( n == 0 || n > HTTP_CLIENT_MAX_METHOD_LEN ) return ERROR_INVALID_LENGTH ; if ( context -> bufferLen > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_INVALID_SYNTAX ; context -> buffer [ context -> bufferLen ] = '\\\\0' ; <S2SV_StartBug> p = strchr ( context -> buffer , '<S2SV_blank>' ) ; <S2SV_EndBug> if ( p == NULL ) return ERROR_INVALID_SYNTAX ; m = p - context -> buffer ; if ( ( context -> bufferLen + n - m ) > HTTP_CLIENT_BUFFER_SIZE ) return ERROR_BUFFER_OVERFLOW ; osMemmove ( context -> buffer + n , p , context -> bufferLen + 1 - m ) ; osStrncpy ( context -> buffer , method , n ) ; context -> bufferLen = context -> bufferLen + n - m ; osStrcpy ( context -> method , method ) ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; p = osStrchr <S2SV_ModEnd> ( context ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13035\n\n```\nCWE-125 static char * isis_print_id ( const uint8_t * cp , int id_len ) { int i ; static char id [ sizeof ( \"xxxx.xxxx.xxxx.yy-zz\" ) ] ; char * pos = id ; <S2SV_StartBug> for ( i = 1 ; i <= SYSTEM_ID_LEN ; i ++ ) { <S2SV_EndBug> snprintf ( pos , sizeof ( id ) - ( pos - id ) , \"%02x\" , * cp ++ ) ; pos += strlen ( pos ) ; if ( i == 2 || i == 4 ) * pos ++ = '.' ; } if ( id_len >= NODE_ID_LEN ) { snprintf ( pos , sizeof ( id ) - ( pos - id ) , \".%02x\" , * cp ++ ) ; pos += strlen ( pos ) ; } if ( id_len == LSP_ID_LEN ) snprintf ( pos , sizeof ( id ) - ( pos - id ) , \"-%02x\" , * cp ) ; return ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = id ; int sysid_len ; sysid_len = SYSTEM_ID_LEN ; if ( sysid_len > id_len ) sysid_len = id_len ; <S2SV_ModStart> ; i <= sysid_len <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10128\n\n```\nCWE-119 int git_pkt_parse_line ( git_pkt * * head , const char * line , const char * * out , size_t bufflen ) { int ret ; int32_t len ; if ( bufflen > 0 && bufflen < PKT_LEN_SIZE ) return GIT_EBUFS ; len = parse_len ( line ) ; if ( len < 0 ) { if ( bufflen >= 4 && ! git__prefixcmp ( line , \"PACK\" ) ) { giterr_clear ( ) ; * out = line ; return pack_pkt ( head ) ; } return ( int ) len ; } if ( bufflen > 0 && bufflen < ( size_t ) len ) return GIT_EBUFS ; <S2SV_StartBug> line += PKT_LEN_SIZE ; <S2SV_EndBug> if ( len == PKT_LEN_SIZE ) { * head = NULL ; * out = line ; return 0 ; } if ( len == 0 ) { * out = line ; return flush_pkt ( head ) ; } len -= PKT_LEN_SIZE ; if ( * line == GIT_SIDE_BAND_DATA ) ret = data_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_PROGRESS ) ret = sideband_progress_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_ERROR ) ret = sideband_error_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ACK\" ) ) ret = ack_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"NAK\" ) ) ret = nak_pkt ( head ) ; else if ( ! git__prefixcmp ( line , \"ERR<S2SV_blank>\" ) ) ret = err_pkt ( head , line , len ) ; else if ( * line == '#' ) ret = comment_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ok\" ) ) ret = ok_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ng\" ) ) ret = ng_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"unpack\" ) ) ret = unpack_pkt ( head , line , len ) ; else ret = ref_pkt ( head , line , len ) ; * out = line + len ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return GIT_EBUFS ; if ( len != 0 && len < PKT_LEN_SIZE ) return GIT_ERROR ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7412\n\n```\nCWE-119 enum_func_status php_mysqlnd_rowp_read_text_protocol_aux ( MYSQLND_MEMORY_POOL_CHUNK * row_buffer , zval * * fields , unsigned int field_count , const MYSQLND_FIELD * fields_metadata , zend_bool as_int_or_float , zend_bool copy_data , MYSQLND_STATS * stats TSRMLS_DC ) { unsigned int i ; zend_bool last_field_was_string = FALSE ; zval * * current_field , * * end_field , * * start_field ; zend_uchar * p = row_buffer -> ptr ; size_t data_size = row_buffer -> app ; zend_uchar * bit_area = ( zend_uchar * ) row_buffer -> ptr + data_size + 1 ; <S2SV_StartBug> DBG_ENTER ( \"php_mysqlnd_rowp_read_text_protocol_aux\" ) ; <S2SV_EndBug> if ( ! fields ) { DBG_RETURN ( FAIL ) ; } end_field = ( start_field = fields ) + field_count ; for ( i = 0 , current_field = start_field ; current_field < end_field ; current_field ++ , i ++ ) { DBG_INF ( \"Directly<S2SV_blank>creating<S2SV_blank>zval\" ) ; MAKE_STD_ZVAL ( * current_field ) ; if ( ! * current_field ) { DBG_RETURN ( FAIL ) ; } } for ( i = 0 , current_field = start_field ; current_field < end_field ; current_field ++ , i ++ ) { zend_uchar * this_field_len_pos = p ; <S2SV_StartBug> unsigned long len = php_mysqlnd_net_field_length ( & p ) ; <S2SV_EndBug> if ( copy_data == FALSE && current_field > start_field && last_field_was_string ) { * this_field_len_pos = '\\\\0' ; } if ( len == MYSQLND_NULL_LENGTH ) { ZVAL_NULL ( * current_field ) ; last_field_was_string = FALSE ; } else { # if defined ( MYSQLND_STRING_TO_INT_CONVERSION ) struct st_mysqlnd_perm_bind perm_bind = mysqlnd_ps_fetch_functions [ fields_metadata [ i ] . type ] ; # endif if ( MYSQLND_G ( collect_statistics ) ) { enum_mysqlnd_collected_stats statistic ; switch ( fields_metadata [ i ] . type ) { case MYSQL_TYPE_DECIMAL : statistic = STAT_TEXT_TYPE_FETCHED_DECIMAL ; break ; case MYSQL_TYPE_TINY : statistic = STAT_TEXT_TYPE_FETCHED_INT8 ; break ; case MYSQL_TYPE_SHORT : statistic = STAT_TEXT_TYPE_FETCHED_INT16 ; break ; case MYSQL_TYPE_LONG : statistic = STAT_TEXT_TYPE_FETCHED_INT32 ; break ; case MYSQL_TYPE_FLOAT : statistic = STAT_TEXT_TYPE_FETCHED_FLOAT ; break ; case MYSQL_TYPE_DOUBLE : statistic = STAT_TEXT_TYPE_FETCHED_DOUBLE ; break ; case MYSQL_TYPE_NULL : statistic = STAT_TEXT_TYPE_FETCHED_NULL ; break ; case MYSQL_TYPE_TIMESTAMP : statistic = STAT_TEXT_TYPE_FETCHED_TIMESTAMP ; break ; case MYSQL_TYPE_LONGLONG : statistic = STAT_TEXT_TYPE_FETCHED_INT64 ; break ; case MYSQL_TYPE_INT24 : statistic = STAT_TEXT_TYPE_FETCHED_INT24 ; break ; case MYSQL_TYPE_DATE : statistic = STAT_TEXT_TYPE_FETCHED_DATE ; break ; case MYSQL_TYPE_TIME : statistic = STAT_TEXT_TYPE_FETCHED_TIME ; break ; case MYSQL_TYPE_DATETIME : statistic = STAT_TEXT_TYPE_FETCHED_DATETIME ; break ; case MYSQL_TYPE_YEAR : statistic = STAT_TEXT_TYPE_FETCHED_YEAR ; break ; case MYSQL_TYPE_NEWDATE : statistic = STAT_TEXT_TYPE_FETCHED_DATE ; break ; case MYSQL_TYPE_VARCHAR : statistic = STAT_TEXT_TYPE_FETCHED_STRING ; break ; case MYSQL_TYPE_BIT : statistic = STAT_TEXT_TYPE_FETCHED_BIT ; break ; case MYSQL_TYPE_NEWDECIMAL : statistic = STAT_TEXT_TYPE_FETCHED_DECIMAL ; break ; case MYSQL_TYPE_ENUM : statistic = STAT_TEXT_TYPE_FETCHED_ENUM ; break ; case MYSQL_TYPE_SET : statistic = STAT_TEXT_TYPE_FETCHED_SET ; break ; case MYSQL_TYPE_JSON : statistic = STAT_TEXT_TYPE_FETCHED_JSON ; break ; case MYSQL_TYPE_TINY_BLOB : statistic = STAT_TEXT_TYPE_FETCHED_BLOB ; break ; case MYSQL_TYPE_MEDIUM_BLOB : statistic = STAT_TEXT_TYPE_FETCHED_BLOB ; break ; case MYSQL_TYPE_LONG_BLOB : statistic = STAT_TEXT_TYPE_FETCHED_BLOB ; break ; case MYSQL_TYPE_BLOB : statistic = STAT_TEXT_TYPE_FETCHED_BLOB ; break ; case MYSQL_TYPE_VAR_STRING : statistic = STAT_TEXT_TYPE_FETCHED_STRING ; break ; case MYSQL_TYPE_STRING : statistic = STAT_TEXT_TYPE_FETCHED_STRING ; break ; case MYSQL_TYPE_GEOMETRY : statistic = STAT_TEXT_TYPE_FETCHED_GEOMETRY ; break ; default : statistic = STAT_TEXT_TYPE_FETCHED_OTHER ; break ; } MYSQLND_INC_CONN_STATISTIC_W_VALUE2 ( stats , statistic , 1 , STAT_BYTES_RECEIVED_PURE_DATA_TEXT , len ) ; } # ifdef MYSQLND_STRING_TO_INT_CONVERSION if ( as_int_or_float && perm_bind . php_type == IS_LONG ) { zend_uchar save = * ( p + len ) ; * ( p + len ) = '\\\\0' ; if ( perm_bind . pack_len < SIZEOF_LONG ) { int64_t v = # ifndef PHP_WIN32 atoll ( ( char * ) p ) ; # else _atoi64 ( ( char * ) p ) ; # endif ZVAL_LONG ( * current_field , ( long ) v ) ; } else { uint64_t v = # ifndef PHP_WIN32 ( uint64_t ) atoll ( ( char * ) p ) ; # else ( uint64_t ) _atoi64 ( ( char * ) p ) ; # endif zend_bool uns = fields_metadata [ i ] . flags & UNSIGNED_FLAG ? TRUE : FALSE ; # if SIZEOF_LONG == 8 if ( uns == TRUE && v > 9223372036854775807L ) # elif SIZEOF_LONG == 4 if ( ( uns == TRUE && v > L64 ( 2147483647 ) ) || ( uns == FALSE && ( ( L64 ( 2147483647 ) < ( int64_t ) v ) || ( L64 ( - 2147483648 ) > ( int64_t ) v ) ) ) ) # else # error Need fix for this architecture # endif { ZVAL_STRINGL ( * current_field , ( char * ) p , len , 0 ) ; } else { ZVAL_LONG ( * current_field , ( long ) v ) ; } } * ( p + len ) = save ; } else if ( as_int_or_float && perm_bind . php_type == IS_DOUBLE ) { zend_uchar save = * ( p + len ) ; * ( p + len ) = '\\\\0' ; ZVAL_DOUBLE ( * current_field , atof ( ( char * ) p ) ) ; * ( p + len ) = save ; } else # endif if ( fields_metadata [ i ] . type == MYSQL_TYPE_BIT ) { zend_uchar * start = bit_area ; ps_fetch_from_1_to_8_bytes ( * current_field , & ( fields_metadata [ i ] ) , 0 , & p , len TSRMLS_CC ) ; p -= len ; if ( Z_TYPE_PP ( current_field ) == IS_LONG ) { bit_area += 1 + sprintf ( ( char * ) start , \"%ld\" , Z_LVAL_PP ( current_field ) ) ; ZVAL_STRINGL ( * current_field , ( char * ) start , bit_area - start - 1 , copy_data ) ; } else if ( Z_TYPE_PP ( current_field ) == IS_STRING ) { memcpy ( bit_area , Z_STRVAL_PP ( current_field ) , Z_STRLEN_PP ( current_field ) ) ; bit_area += Z_STRLEN_PP ( current_field ) ; * bit_area ++ = '\\\\0' ; zval_dtor ( * current_field ) ; ZVAL_STRINGL ( * current_field , ( char * ) start , bit_area - start - 1 , copy_data ) ; } } else { ZVAL_STRINGL ( * current_field , ( char * ) p , len , copy_data ) ; } p += len ; last_field_was_string = TRUE ; } } if ( copy_data == FALSE && last_field_was_string ) { row_buffer -> ptr [ data_size ] = '\\\\0' ; } DBG_RETURN ( PASS ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 1 ; const zend_uchar * const packet_end = ( zend_uchar * ) row_buffer -> ptr + data_size ; <S2SV_ModStart> = p ; const <S2SV_ModStart> p ) ; if ( len != MYSQLND_NULL_LENGTH && ( ( p + len ) > packet_end ) ) { php_error_docref ( NULL , E_WARNING , \"Malformed<S2SV_blank>server<S2SV_blank>packet.<S2SV_blank>Field<S2SV_blank>length<S2SV_blank>pointing<S2SV_blank>\" MYSQLND_SZ_T_SPEC \"<S2SV_blank>bytes<S2SV_blank>after<S2SV_blank>end<S2SV_blank>of<S2SV_blank>packet\" , ( p + len ) - packet_end - 1 ) ; DBG_RETURN ( FAIL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 ssize_t socket_bytes_available ( const socket_t * socket ) { assert ( socket != NULL ) ; int size = 0 ; <S2SV_StartBug> if ( ioctl ( socket -> fd , FIONREAD , & size ) == - 1 ) <S2SV_EndBug> return - 1 ; return size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> , & size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8065\n\n```\nCWE-119 static int crypto_ccm_auth ( struct aead_request * req , struct scatterlist * plain , unsigned int cryptlen ) { struct crypto_ccm_req_priv_ctx * pctx = crypto_ccm_reqctx ( req ) ; struct crypto_aead * aead = crypto_aead_reqtfm ( req ) ; struct crypto_ccm_ctx * ctx = crypto_aead_ctx ( aead ) ; AHASH_REQUEST_ON_STACK ( ahreq , ctx -> mac ) ; unsigned int assoclen = req -> assoclen ; struct scatterlist sg [ 3 ] ; <S2SV_StartBug> u8 odata [ 16 ] ; <S2SV_EndBug> u8 idata [ 16 ] ; int ilen , err ; err = format_input ( odata , req , cryptlen ) ; if ( err ) goto out ; sg_init_table ( sg , 3 ) ; sg_set_buf ( & sg [ 0 ] , odata , 16 ) ; if ( assoclen ) { ilen = format_adata ( idata , assoclen ) ; sg_set_buf ( & sg [ 1 ] , idata , ilen ) ; sg_chain ( sg , 3 , req -> src ) ; } else { ilen = 0 ; sg_chain ( sg , 2 , req -> src ) ; } ahash_request_set_tfm ( ahreq , ctx -> mac ) ; ahash_request_set_callback ( ahreq , pctx -> flags , NULL , NULL ) ; ahash_request_set_crypt ( ahreq , sg , NULL , assoclen + ilen + 16 ) ; err = crypto_ahash_init ( ahreq ) ; if ( err ) goto out ; err = crypto_ahash_update ( ahreq ) ; if ( err ) goto out ; ilen = 16 - ( assoclen + ilen ) % 16 ; if ( ilen < 16 ) { memset ( idata , 0 , ilen ) ; sg_init_table ( sg , 2 ) ; sg_set_buf ( & sg [ 0 ] , idata , ilen ) ; if ( plain ) sg_chain ( sg , 2 , plain ) ; plain = sg ; cryptlen += ilen ; } ahash_request_set_crypt ( ahreq , plain , pctx -> odata , cryptlen ) ; err = crypto_ahash_finup ( ahreq ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ; u8 * odata = pctx -> odata ; u8 * idata = pctx -> idata <S2SV_ModEnd> ; int ilen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6418\n\n```\nCWE-399 static int ceph_x_decrypt ( struct ceph_crypto_key * secret , <S2SV_StartBug> void * * p , void * end , void * obuf , size_t olen ) <S2SV_EndBug> { struct ceph_x_encrypt_header head ; size_t head_len = sizeof ( head ) ; int len , ret ; len = ceph_decode_32 ( p ) ; if ( * p + len > end ) return - EINVAL ; dout ( \"ceph_x_decrypt<S2SV_blank>len<S2SV_blank>%d\\\\n\" , len ) ; <S2SV_StartBug> ret = ceph_decrypt2 ( secret , & head , & head_len , obuf , & olen , <S2SV_EndBug> * p , len ) ; if ( ret ) return ret ; if ( head . struct_v != 1 || le64_to_cpu ( head . magic ) != CEPHX_ENC_MAGIC ) return - EPERM ; * p += len ; return olen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> end , void * <S2SV_ModStart> len ) ; if ( * obuf == NULL ) { * obuf = kmalloc ( len , GFP_NOFS ) ; if ( ! * obuf ) return - ENOMEM ; olen = len ; } <S2SV_ModStart> & head_len , *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void write_partition ( VP9_COMMON * cm , MACROBLOCKD * xd , <S2SV_EndBug> int hbs , int mi_row , int mi_col , <S2SV_StartBug> PARTITION_TYPE p , BLOCK_SIZE bsize , vp9_writer * w ) { <S2SV_EndBug> const int ctx = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> const vp9_prob * const probs = get_partition_probs ( cm , ctx ) ; <S2SV_EndBug> const int has_rows = ( mi_row + hbs ) < cm -> mi_rows ; const int has_cols = ( mi_col + hbs ) < cm -> mi_cols ; if ( has_rows && has_cols ) { vp9_write_token ( w , vp9_partition_tree , probs , & partition_encodings [ p ] ) ; } else if ( ! has_rows && has_cols ) { assert ( p == PARTITION_SPLIT || p == PARTITION_HORZ ) ; <S2SV_StartBug> vp9_write ( w , p == PARTITION_SPLIT , probs [ 1 ] ) ; <S2SV_EndBug> } else if ( has_rows && ! has_cols ) { assert ( p == PARTITION_SPLIT || p == PARTITION_VERT ) ; <S2SV_StartBug> vp9_write ( w , p == PARTITION_SPLIT , probs [ 2 ] ) ; <S2SV_EndBug> } else { assert ( p == PARTITION_SPLIT ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void write_partition ( const VP9_COMMON * const cm , const MACROBLOCKD * const <S2SV_ModEnd> xd , int <S2SV_ModStart> BLOCK_SIZE bsize , vpx_writer <S2SV_ModEnd> * w ) <S2SV_ModStart> ) ; const vpx_prob * const probs = xd -> partition_probs [ ctx ] <S2SV_ModEnd> ; const int <S2SV_ModStart> PARTITION_HORZ ) ; vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> PARTITION_VERT ) ; vpx_write <S2SV_ModEnd> ( w ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18585\n\n```\nCWE-476 static int chmd_read_headers ( struct mspack_system * sys , struct mspack_file * fh , struct mschmd_header * chm , int entire ) { unsigned int section , name_len , x , errors , num_chunks ; unsigned char buf [ 0x54 ] , * chunk = NULL , * name , * p , * end ; struct mschmd_file * fi , * link = NULL ; off_t offset , length ; int num_entries ; chm -> files = NULL ; chm -> sysfiles = NULL ; chm -> chunk_cache = NULL ; chm -> sec0 . base . chm = chm ; chm -> sec0 . base . id = 0 ; chm -> sec1 . base . chm = chm ; chm -> sec1 . base . id = 1 ; chm -> sec1 . content = NULL ; chm -> sec1 . control = NULL ; chm -> sec1 . spaninfo = NULL ; chm -> sec1 . rtable = NULL ; if ( sys -> read ( fh , & buf [ 0 ] , chmhead_SIZEOF ) != chmhead_SIZEOF ) { return MSPACK_ERR_READ ; } if ( EndGetI32 ( & buf [ chmhead_Signature ] ) != 0x46535449 ) { return MSPACK_ERR_SIGNATURE ; } if ( mspack_memcmp ( & buf [ chmhead_GUID1 ] , & guids [ 0 ] , 32L ) != 0 ) { D ( ( \"incorrect<S2SV_blank>GUIDs\" ) ) return MSPACK_ERR_SIGNATURE ; } chm -> version = EndGetI32 ( & buf [ chmhead_Version ] ) ; chm -> timestamp = EndGetM32 ( & buf [ chmhead_Timestamp ] ) ; chm -> language = EndGetI32 ( & buf [ chmhead_LanguageID ] ) ; if ( chm -> version > 3 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>CHM<S2SV_blank>version<S2SV_blank>><S2SV_blank>3\" ) ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhst3_SIZEOF ) != chmhst3_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & offset , & buf [ chmhst_OffsetHS0 ] , sys , fh ) || read_off64 ( & chm -> dir_offset , & buf [ chmhst_OffsetHS1 ] , sys , fh ) || read_off64 ( & chm -> sec0 . offset , & buf [ chmhst3_OffsetCS0 ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs0_SIZEOF ) != chmhs0_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & chm -> length , & buf [ chmhs0_FileLen ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , chm -> dir_offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs1_SIZEOF ) != chmhs1_SIZEOF ) { return MSPACK_ERR_READ ; } chm -> dir_offset = sys -> tell ( fh ) ; chm -> chunk_size = EndGetI32 ( & buf [ chmhs1_ChunkSize ] ) ; chm -> density = EndGetI32 ( & buf [ chmhs1_Density ] ) ; chm -> depth = EndGetI32 ( & buf [ chmhs1_Depth ] ) ; chm -> index_root = EndGetI32 ( & buf [ chmhs1_IndexRoot ] ) ; chm -> num_chunks = EndGetI32 ( & buf [ chmhs1_NumChunks ] ) ; chm -> first_pmgl = EndGetI32 ( & buf [ chmhs1_FirstPMGL ] ) ; chm -> last_pmgl = EndGetI32 ( & buf [ chmhs1_LastPMGL ] ) ; if ( chm -> version < 3 ) { chm -> sec0 . offset = chm -> dir_offset + ( chm -> chunk_size * chm -> num_chunks ) ; } if ( chm -> sec0 . offset > chm -> length ) { D ( ( \"content<S2SV_blank>section<S2SV_blank>begins<S2SV_blank>after<S2SV_blank>file<S2SV_blank>has<S2SV_blank>ended\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> chunk_size < ( pmgl_Entries + 2 ) ) { D ( ( \"chunk<S2SV_blank>size<S2SV_blank>not<S2SV_blank>large<S2SV_blank>enough\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks == 0 ) { D ( ( \"no<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks > 100000 ) { D ( ( \"more<S2SV_blank>than<S2SV_blank>100,000<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( off_t ) chm -> chunk_size * ( off_t ) chm -> num_chunks > chm -> length ) { D ( ( \"chunks<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>entire<S2SV_blank>file\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( chm -> chunk_size & ( chm -> chunk_size - 1 ) ) != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>two\" ) ; } if ( chm -> first_pmgl != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>first<S2SV_blank>PMGL<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>not<S2SV_blank>zero\" ) ; } if ( chm -> first_pmgl > chm -> last_pmgl ) { D ( ( \"first<S2SV_blank>pmgl<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>after<S2SV_blank>last<S2SV_blank>pmgl<S2SV_blank>chunk\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> index_root != 0xFFFFFFFF && chm -> index_root >= chm -> num_chunks ) { D ( ( \"index_root<S2SV_blank>outside<S2SV_blank>valid<S2SV_blank>range\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ! entire ) { return MSPACK_ERR_OK ; } if ( ( x = chm -> first_pmgl ) != 0 ) { if ( sys -> seek ( fh , ( off_t ) ( x * chm -> chunk_size ) , MSPACK_SYS_SEEK_CUR ) ) { return MSPACK_ERR_SEEK ; } } num_chunks = chm -> last_pmgl - x + 1 ; if ( ! ( chunk = ( unsigned char * ) sys -> alloc ( sys , ( size_t ) chm -> chunk_size ) ) ) { return MSPACK_ERR_NOMEMORY ; } errors = 0 ; while ( num_chunks -- ) { if ( sys -> read ( fh , chunk , ( int ) chm -> chunk_size ) != ( int ) chm -> chunk_size ) { sys -> free ( chunk ) ; return MSPACK_ERR_READ ; } if ( EndGetI32 ( & chunk [ pmgl_Signature ] ) != 0x4C474D50 ) continue ; if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) < 2 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\" ) ; } if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) > ( ( int ) chm -> chunk_size - pmgl_Entries ) ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ; } p = & chunk [ pmgl_Entries ] ; end = & chunk [ chm -> chunk_size - 2 ] ; num_entries = EndGetI16 ( end ) ; while ( num_entries -- ) { READ_ENCINT ( name_len ) ; if ( name_len > ( unsigned int ) ( end - p ) ) goto chunk_end ; <S2SV_StartBug> if ( name_len == 0 ) goto chunk_end ; <S2SV_EndBug> name = p ; p += name_len ; READ_ENCINT ( section ) ; READ_ENCINT ( offset ) ; <S2SV_StartBug> READ_ENCINT ( length ) ; <S2SV_EndBug> if ( ( offset == 0 ) && ( length == 0 ) ) { if ( ( name_len > 0 ) && ( name [ name_len - 1 ] == '/' ) ) continue ; } if ( section > 1 ) { sys -> message ( fh , \"invalid<S2SV_blank>section<S2SV_blank>number<S2SV_blank>\\'%u\\'.\" , section ) ; continue ; } if ( ! ( fi = ( struct mschmd_file * ) sys -> alloc ( sys , sizeof ( struct mschmd_file ) + name_len + 1 ) ) ) { sys -> free ( chunk ) ; return MSPACK_ERR_NOMEMORY ; } fi -> next = NULL ; fi -> filename = ( char * ) & fi [ 1 ] ; fi -> section = ( ( section == 0 ) ? ( struct mschmd_section * ) ( & chm -> sec0 ) : ( struct mschmd_section * ) ( & chm -> sec1 ) ) ; fi -> offset = offset ; fi -> length = length ; sys -> copy ( name , fi -> filename , ( size_t ) name_len ) ; fi -> filename [ name_len ] = '\\\\0' ; if ( name [ 0 ] == ':' && name [ 1 ] == ':' ) { if ( mspack_memcmp ( & name [ 2 ] , & content_name [ 2 ] , 31L ) == 0 ) { if ( mspack_memcmp ( & name [ 33 ] , & content_name [ 33 ] , 8L ) == 0 ) { chm -> sec1 . content = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & control_name [ 33 ] , 11L ) == 0 ) { chm -> sec1 . control = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & spaninfo_name [ 33 ] , 8L ) == 0 ) { chm -> sec1 . spaninfo = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & rtable_name [ 33 ] , 72L ) == 0 ) { chm -> sec1 . rtable = fi ; } } fi -> next = chm -> sysfiles ; chm -> sysfiles = fi ; } else { if ( link ) link -> next = fi ; else chm -> files = fi ; link = fi ; } } chunk_end : if ( num_entries >= 0 ) { D ( ( \"chunk<S2SV_blank>ended<S2SV_blank>before<S2SV_blank>all<S2SV_blank>entries<S2SV_blank>could<S2SV_blank>be<S2SV_blank>read\" ) ) errors ++ ; } } sys -> free ( chunk ) ; return ( errors > 0 ) ? MSPACK_ERR_DATAFORMAT : MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto chunk_end ; <S2SV_ModEnd> name = p <S2SV_ModStart> ( length ) ; if ( name_len < 2 || ! name [ 0 ] || ! name [ 1 ] ) continue\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-862(缺少授权)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-29074\n\n```\nCWE-862 static int shm_create ( XShmSegmentInfo * shm , XImage * * ximg_ptr , int w , int h , char * name ) { XImage * xim ; static int reported_flip = 0 ; int db = 0 ; shm -> shmid = - 1 ; shm -> shmaddr = ( char * ) - 1 ; * ximg_ptr = NULL ; if ( nofb ) { return 1 ; } X_LOCK ; if ( ! using_shm || xform24to32 || raw_fb ) { xim = XCreateImage_wr ( dpy , default_visual , depth , ZPixmap , 0 , NULL , w , h , raw_fb ? 32 : BitmapPad ( dpy ) , 0 ) ; X_UNLOCK ; if ( xim == NULL ) { rfbErr ( \"XCreateImage(%s)<S2SV_blank>failed.\\\\n\" , name ) ; if ( quiet ) { fprintf ( stderr , \"XCreateImage(%s)<S2SV_blank>failed.\\\\n\" , name ) ; } return 0 ; } if ( db ) fprintf ( stderr , \"shm_create<S2SV_blank>simple<S2SV_blank>%d<S2SV_blank>%d\\\\t%p<S2SV_blank>%s\\\\n\" , w , h , ( void * ) xim , name ) ; xim -> data = ( char * ) malloc ( xim -> bytes_per_line * xim -> height ) ; if ( xim -> data == NULL ) { rfbErr ( \"XCreateImage(%s)<S2SV_blank>data<S2SV_blank>malloc<S2SV_blank>failed.\\\\n\" , name ) ; if ( quiet ) { fprintf ( stderr , \"XCreateImage(%s)<S2SV_blank>data<S2SV_blank>malloc\" \"<S2SV_blank>failed.\\\\n\" , name ) ; } return 0 ; } if ( flip_byte_order ) { char * order = flip_ximage_byte_order ( xim ) ; if ( ! reported_flip && ! quiet ) { rfbLog ( \"Changing<S2SV_blank>XImage<S2SV_blank>byte<S2SV_blank>order\" \"<S2SV_blank>to<S2SV_blank>%s\\\\n\" , order ) ; reported_flip = 1 ; } } * ximg_ptr = xim ; return 1 ; } if ( ! dpy ) { X_UNLOCK ; return 0 ; } xim = XShmCreateImage_wr ( dpy , default_visual , depth , ZPixmap , NULL , shm , w , h ) ; if ( xim == NULL ) { rfbErr ( \"XShmCreateImage(%s)<S2SV_blank>failed.\\\\n\" , name ) ; if ( quiet ) { fprintf ( stderr , \"XShmCreateImage(%s)<S2SV_blank>failed.\\\\n\" , name ) ; } X_UNLOCK ; return 0 ; } * ximg_ptr = xim ; # if HAVE_XSHM shm -> shmid = shmget ( IPC_PRIVATE , <S2SV_StartBug> xim -> bytes_per_line * xim -> height , IPC_CREAT | 0777 ) ; <S2SV_EndBug> if ( shm -> shmid == - 1 ) { rfbErr ( \"shmget(%s)<S2SV_blank>failed.\\\\n\" , name ) ; rfbLogPerror ( \"shmget\" ) ; XDestroyImage ( xim ) ; * ximg_ptr = NULL ; X_UNLOCK ; return 0 ; } shm -> shmaddr = xim -> data = ( char * ) shmat ( shm -> shmid , 0 , 0 ) ; if ( shm -> shmaddr == ( char * ) - 1 ) { rfbErr ( \"shmat(%s)<S2SV_blank>failed.\\\\n\" , name ) ; rfbLogPerror ( \"shmat\" ) ; XDestroyImage ( xim ) ; * ximg_ptr = NULL ; shmctl ( shm -> shmid , IPC_RMID , 0 ) ; shm -> shmid = - 1 ; X_UNLOCK ; return 0 ; } shm -> readOnly = False ; if ( ! XShmAttach_wr ( dpy , shm ) ) { rfbErr ( \"XShmAttach(%s)<S2SV_blank>failed.\\\\n\" , name ) ; XDestroyImage ( xim ) ; * ximg_ptr = NULL ; shmdt ( shm -> shmaddr ) ; shm -> shmaddr = ( char * ) - 1 ; shmctl ( shm -> shmid , IPC_RMID , 0 ) ; shm -> shmid = - 1 ; X_UNLOCK ; return 0 ; } # endif X_UNLOCK ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , IPC_CREAT | 0600 <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 int perf_event_refresh ( struct perf_event * event , int refresh ) { <S2SV_StartBug> if ( event -> attr . inherit || ! is_sampling_event ( event ) ) <S2SV_EndBug> return - EINVAL ; atomic_add ( refresh , & event -> event_limit ) ; perf_event_enable ( event ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> refresh ) { struct perf_event_context * ctx ; int ret ; ctx = perf_event_ctx_lock <S2SV_ModEnd> ( event ) <S2SV_ModStart> event ) ; ret = _perf_event_refresh ( event , refresh ) ; perf_event_ctx_unlock ( event , ctx ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4943\n\n```\nCWE-269 static int pppol2tp_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; struct l2tp_session * session ; struct l2tp_tunnel * tunnel ; struct pppol2tp_session * ps ; int val ; int err ; if ( level != SOL_PPPOL2TP ) <S2SV_StartBug> return udp_prot . setsockopt ( sk , level , optname , optval , optlen ) ; <S2SV_EndBug> if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; err = - ENOTCONN ; if ( sk -> sk_user_data == NULL ) goto end ; err = - EBADF ; session = pppol2tp_sock_to_session ( sk ) ; if ( session == NULL ) goto end ; ps = l2tp_session_priv ( session ) ; if ( ( session -> session_id == 0 ) && ( session -> peer_session_id == 0 ) ) { err = - EBADF ; tunnel = l2tp_sock_to_tunnel ( ps -> tunnel_sock ) ; if ( tunnel == NULL ) goto end_put_sess ; err = pppol2tp_tunnel_setsockopt ( sk , tunnel , optname , val ) ; sock_put ( ps -> tunnel_sock ) ; } else err = pppol2tp_session_setsockopt ( sk , session , optname , val ) ; err = 0 ; end_put_sess : sock_put ( sk ) ; end : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SOL_PPPOL2TP ) return - EINVAL <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void zero_stats ( FIRSTPASS_STATS * section ) { <S2SV_StartBug> section -> frame = 0.0 ; <S2SV_EndBug> section -> intra_error = 0.0 ; section -> coded_error = 0.0 ; <S2SV_StartBug> section -> sr_coded_error = 0.0 ; <S2SV_EndBug> section -> ssim_weighted_pred_err = 0.0 ; section -> pcnt_inter = 0.0 ; section -> pcnt_motion = 0.0 ; section -> pcnt_second_ref = 0.0 ; <S2SV_StartBug> section -> pcnt_neutral = 0.0 ; <S2SV_EndBug> section -> MVr = 0.0 ; section -> mvr_abs = 0.0 ; section -> MVc = 0.0 ; section -> mvc_abs = 0.0 ; section -> MVrv = 0.0 ; section -> MVcv = 0.0 ; section -> mv_in_out_count = 0.0 ; section -> new_mv_count = 0.0 ; section -> count = 0.0 ; section -> duration = 1.0 ; section -> spatial_layer_id = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> section -> frame = 0.0 ; section -> weight <S2SV_ModStart> section -> sr_coded_error <S2SV_ModEnd> = 0.0 ; <S2SV_ModStart> section -> pcnt_neutral = 0.0 ; section -> intra_skip_pct = 0.0 ; section -> inactive_zone_rows = 0.0 ; section -> inactive_zone_cols\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-863(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31829\n\n```\nCWE-863 static int sanitize_ptr_alu ( struct bpf_verifier_env * env , struct bpf_insn * insn , const struct bpf_reg_state * ptr_reg , const struct bpf_reg_state * off_reg , struct bpf_reg_state * dst_reg , struct bpf_insn_aux_data * tmp_aux , const bool commit_window ) { struct bpf_insn_aux_data * aux = commit_window ? cur_aux ( env ) : tmp_aux ; struct bpf_verifier_state * vstate = env -> cur_state ; <S2SV_StartBug> bool off_is_neg = off_reg -> smin_value < 0 ; <S2SV_EndBug> bool ptr_is_dst_reg = ptr_reg == dst_reg ; u8 opcode = BPF_OP ( insn -> code ) ; u32 alu_state , alu_limit ; struct bpf_reg_state tmp ; bool ret ; int err ; if ( can_skip_alu_sanitation ( env , insn ) ) return 0 ; if ( vstate -> speculative ) goto do_sim ; err = retrieve_ptr_limit ( ptr_reg , off_reg , & alu_limit , opcode ) ; if ( err < 0 ) return err ; if ( commit_window ) { alu_state = tmp_aux -> alu_state ; alu_limit = abs ( tmp_aux -> alu_limit - alu_limit ) ; } else { <S2SV_StartBug> alu_state = off_is_neg ? BPF_ALU_NEG_VALUE : 0 ; <S2SV_EndBug> alu_state |= ptr_is_dst_reg ? BPF_ALU_SANITIZE_SRC : BPF_ALU_SANITIZE_DST ; } err = update_alu_sanitation_state ( aux , alu_state , alu_limit ) ; if ( err < 0 ) return err ; do_sim : if ( commit_window ) return 0 ; if ( ! ptr_is_dst_reg ) { tmp = * dst_reg ; * dst_reg = * ptr_reg ; } ret = push_stack ( env , env -> insn_idx + 1 , env -> insn_idx , true ) ; if ( ! ptr_is_dst_reg && ret ) * dst_reg = tmp ; return ! ret ? REASON_STACK : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cur_state ; bool off_is_imm = tnum_is_const ( off_reg -> var_off ) ; bool <S2SV_ModStart> off_is_neg ? BPF_ALU_NEG_VALUE : 0 ; alu_state |= off_is_imm ? BPF_ALU_IMMEDIATE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10749\n\n```\nCWE-125 static const char * parse_string ( cJSON * item , const char * str , const char * * ep ) { const char * ptr = str + 1 , * end_ptr = str + 1 ; char * ptr2 ; char * out ; int len = 0 ; unsigned uc , uc2 ; if ( * str != \\'\\\\\"\\' ) { * ep = str ; return 0 ; } <S2SV_StartBug> while ( * end_ptr != \\'\\\\\"\\' && * end_ptr && ++ len ) if ( * end_ptr ++ == '\\\\\\\\' ) end_ptr ++ ; <S2SV_EndBug> out = ( char * ) cJSON_malloc ( len + 1 ) ; if ( ! out ) return 0 ; item -> valuestring = out ; item -> type = cJSON_String ; ptr = str + 1 ; ptr2 = out ; while ( ptr < end_ptr ) { if ( * ptr != '\\\\\\\\' ) * ptr2 ++ = * ptr ++ ; else { ptr ++ ; switch ( * ptr ) { case 'b' : * ptr2 ++ = '\\\\b' ; break ; case 'f' : * ptr2 ++ = '\\\\f' ; break ; case 'n' : * ptr2 ++ = '\\\\n' ; break ; case 'r' : * ptr2 ++ = '\\\\r' ; break ; case 't' : * ptr2 ++ = '\\\\t' ; break ; case 'u' : uc = parse_hex4 ( ptr + 1 ) ; ptr += 4 ; if ( ptr >= end_ptr ) { * ep = str ; return 0 ; } if ( ( uc >= 0xDC00 && uc <= 0xDFFF ) || uc == 0 ) { * ep = str ; return 0 ; } if ( uc >= 0xD800 && uc <= 0xDBFF ) { if ( ptr + 6 > end_ptr ) { * ep = str ; return 0 ; } if ( ptr [ 1 ] != '\\\\\\\\' || ptr [ 2 ] != 'u' ) { * ep = str ; return 0 ; } uc2 = parse_hex4 ( ptr + 3 ) ; ptr += 6 ; if ( uc2 < 0xDC00 || uc2 > 0xDFFF ) { * ep = str ; return 0 ; } uc = 0x10000 + ( ( ( uc & 0x3FF ) << 10 ) | ( uc2 & 0x3FF ) ) ; } len = 4 ; if ( uc < 0x80 ) len = 1 ; else if ( uc < 0x800 ) len = 2 ; else if ( uc < 0x10000 ) len = 3 ; ptr2 += len ; switch ( len ) { case 4 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 3 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 2 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 1 : * -- ptr2 = ( uc | firstByteMark [ len ] ) ; } ptr2 += len ; break ; default : * ptr2 ++ = * ptr ; break ; } ptr ++ ; } } * ptr2 = 0 ; if ( * ptr == \\'\\\\\"\\' ) ptr ++ ; return ptr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ len ) { <S2SV_ModStart> == '\\\\\\\\' ) { if ( * end_ptr == '\\\\0' ) { return 0 ; } end_ptr ++ ; } } <S2SV_ModEnd> out = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-191(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8924\n\n```\nCWE-191 static void edge_bulk_in_callback ( struct urb * urb ) { struct edgeport_port * edge_port = urb -> context ; struct device * dev = & edge_port -> port -> dev ; unsigned char * data = urb -> transfer_buffer ; int retval = 0 ; int port_number ; int status = urb -> status ; switch ( status ) { case 0 : break ; case - ECONNRESET : case - ENOENT : case - ESHUTDOWN : dev_dbg ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>urb<S2SV_blank>shutting<S2SV_blank>down<S2SV_blank>with<S2SV_blank>status:<S2SV_blank>%d\\\\n\" , __func__ , status ) ; return ; default : dev_err ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>nonzero<S2SV_blank>read<S2SV_blank>bulk<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>%d\\\\n\" , __func__ , status ) ; } if ( status == - EPIPE ) goto exit ; if ( status ) { dev_err ( & urb -> dev -> dev , \"%s<S2SV_blank>-<S2SV_blank>stopping<S2SV_blank>read!\\\\n\" , __func__ ) ; return ; } port_number = edge_port -> port -> port_number ; <S2SV_StartBug> if ( edge_port -> lsr_event ) { <S2SV_EndBug> edge_port -> lsr_event = 0 ; dev_dbg ( dev , \"%s<S2SV_blank>=====<S2SV_blank>Port<S2SV_blank>%u<S2SV_blank>LSR<S2SV_blank>Status<S2SV_blank>=<S2SV_blank>%02x,<S2SV_blank>Data<S2SV_blank>=<S2SV_blank>%02x<S2SV_blank>======\\\\n\" , __func__ , port_number , edge_port -> lsr_mask , * data ) ; handle_new_lsr ( edge_port , 1 , edge_port -> lsr_mask , * data ) ; -- urb -> actual_length ; ++ data ; } if ( urb -> actual_length ) { usb_serial_debug_data ( dev , __func__ , urb -> actual_length , data ) ; if ( edge_port -> close_pending ) dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>close<S2SV_blank>pending,<S2SV_blank>dropping<S2SV_blank>data<S2SV_blank>on<S2SV_blank>the<S2SV_blank>floor\\\\n\" , __func__ ) ; else edge_tty_recv ( edge_port -> port , data , urb -> actual_length ) ; edge_port -> port -> icount . rx += urb -> actual_length ; } exit : spin_lock ( & edge_port -> ep_lock ) ; if ( edge_port -> ep_read_urb_state == EDGE_READ_URB_RUNNING ) retval = usb_submit_urb ( urb , GFP_ATOMIC ) ; else if ( edge_port -> ep_read_urb_state == EDGE_READ_URB_STOPPING ) edge_port -> ep_read_urb_state = EDGE_READ_URB_STOPPED ; spin_unlock ( & edge_port -> ep_lock ) ; if ( retval ) dev_err ( dev , \"%s<S2SV_blank>-<S2SV_blank>usb_submit_urb<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>result<S2SV_blank>%d\\\\n\" , __func__ , retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( urb -> actual_length > 0 &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14341\n\n```\nCWE-400 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; one = 1 ; image = AcquireImage ( image_info , exception ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; Rec2 . RecordLength = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; <S2SV_StartBug> Rd_WP_DWORD ( image , & Rec . RecordLength ) ; <S2SV_EndBug> if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> resolution . x = BitmapHeader1 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > ( Rec2 . RecordLength - 2 - 2 ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> resolution . x = BitmapHeader2 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; UnpackRaster : status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp , exception ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ReplaceImageInList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > ( Rec2 . RecordLength - 2 - 2 ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; image -> rows = Bitmap2Header1 . Height ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk + 1 , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( image , BImgBuff , i , bpp , exception ) ; } if ( BImgBuff ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp , exception ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Rec . RecordLength ) ; if ( Rec . RecordLength > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t vp8_destroy ( vpx_codec_alg_priv_t * ctx ) { <S2SV_StartBug> int i ; <S2SV_EndBug> vp8_remove_decoder_instances ( & ctx -> yv12_frame_buffers ) ; <S2SV_StartBug> for ( i = NELEMENTS ( ctx -> mmaps ) - 1 ; i >= 0 ; i -- ) <S2SV_EndBug> { if ( ctx -> mmaps [ i ] . dtor ) ctx -> mmaps [ i ] . dtor ( & ctx -> mmaps [ i ] ) ; } return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx ) { <S2SV_ModEnd> vp8_remove_decoder_instances ( & <S2SV_ModStart> yv12_frame_buffers ) ; vpx_free ( ctx ) ; <S2SV_ModEnd> return VPX_CODEC_OK ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-2060\n\n```\nCWE-000 static void dispatch_cmd ( conn c ) { int r , i , timeout = - 1 ; size_t z ; unsigned int count ; job j ; unsigned char type ; char * size_buf , * delay_buf , * ttr_buf , * pri_buf , * end_buf , * name ; unsigned int pri , body_size ; usec delay , ttr ; uint64_t id ; tube t = NULL ; c -> cmd [ c -> cmd_len - 2 ] = '\\\\0' ; if ( strlen ( c -> cmd ) != c -> cmd_len - 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } type = which_cmd ( c ) ; dprintf ( \"got<S2SV_blank>%s<S2SV_blank>command:<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , op_names [ ( int ) type ] , c -> cmd ) ; switch ( type ) { case OP_PUT : r = read_pri ( & pri , c -> cmd + 4 , & delay_buf ) ; if ( r ) return reply_msg ( c , MSG_BAD_FORMAT ) ; r = read_delay ( & delay , delay_buf , & ttr_buf ) ; if ( r ) return reply_msg ( c , MSG_BAD_FORMAT ) ; r = read_ttr ( & ttr , ttr_buf , & size_buf ) ; if ( r ) return reply_msg ( c , MSG_BAD_FORMAT ) ; errno = 0 ; body_size = strtoul ( size_buf , & end_buf , 10 ) ; if ( errno ) return reply_msg ( c , MSG_BAD_FORMAT ) ; if ( body_size > job_data_size_limit ) { <S2SV_StartBug> return reply_msg ( c , MSG_JOB_TOO_BIG ) ; <S2SV_EndBug> } if ( end_buf [ 0 ] != '\\\\0' ) return reply_msg ( c , MSG_BAD_FORMAT ) ; conn_set_producer ( c ) ; c -> in_job = make_job ( pri , delay , ttr ? : 1 , body_size + 2 , c -> use ) ; if ( ! c -> in_job ) { twarnx ( \"server<S2SV_blank>error:<S2SV_blank>\" MSG_OUT_OF_MEMORY ) ; return skip ( c , body_size + 2 , MSG_OUT_OF_MEMORY ) ; } fill_extra_data ( c ) ; maybe_enqueue_incoming_job ( c ) ; break ; case OP_PEEK_READY : if ( c -> cmd_len != CMD_PEEK_READY_LEN + 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } op_ct [ type ] ++ ; j = job_copy ( pq_peek ( & c -> use -> ready ) ) ; if ( ! j ) return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; reply_job ( c , j , MSG_FOUND ) ; break ; case OP_PEEK_DELAYED : if ( c -> cmd_len != CMD_PEEK_DELAYED_LEN + 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } op_ct [ type ] ++ ; j = job_copy ( pq_peek ( & c -> use -> delay ) ) ; if ( ! j ) return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; reply_job ( c , j , MSG_FOUND ) ; break ; case OP_PEEK_BURIED : if ( c -> cmd_len != CMD_PEEK_BURIED_LEN + 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } op_ct [ type ] ++ ; j = job_copy ( buried_job_p ( c -> use ) ? j = c -> use -> buried . next : NULL ) ; if ( ! j ) return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; reply_job ( c , j , MSG_FOUND ) ; break ; case OP_PEEKJOB : errno = 0 ; id = strtoull ( c -> cmd + CMD_PEEKJOB_LEN , & end_buf , 10 ) ; if ( errno ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; j = job_copy ( peek_job ( id ) ) ; if ( ! j ) return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; reply_job ( c , j , MSG_FOUND ) ; break ; case OP_RESERVE_TIMEOUT : errno = 0 ; timeout = strtol ( c -> cmd + CMD_RESERVE_TIMEOUT_LEN , & end_buf , 10 ) ; if ( errno ) return reply_msg ( c , MSG_BAD_FORMAT ) ; case OP_RESERVE : if ( type == OP_RESERVE && c -> cmd_len != CMD_RESERVE_LEN + 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } op_ct [ type ] ++ ; conn_set_worker ( c ) ; if ( conn_has_close_deadline ( c ) && ! conn_ready ( c ) ) { return reply_msg ( c , MSG_DEADLINE_SOON ) ; } wait_for_job ( c , timeout ) ; process_queue ( ) ; break ; case OP_DELETE : errno = 0 ; id = strtoull ( c -> cmd + CMD_DELETE_LEN , & end_buf , 10 ) ; if ( errno ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; j = job_find ( id ) ; j = remove_reserved_job ( c , j ) ? : remove_ready_job ( j ) ? : remove_buried_job ( j ) ; if ( ! j ) return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; j -> state = JOB_STATE_INVALID ; r = binlog_write_job ( j ) ; job_free ( j ) ; if ( ! r ) return reply_serr ( c , MSG_INTERNAL_ERROR ) ; reply ( c , MSG_DELETED , MSG_DELETED_LEN , STATE_SENDWORD ) ; break ; case OP_RELEASE : errno = 0 ; id = strtoull ( c -> cmd + CMD_RELEASE_LEN , & pri_buf , 10 ) ; if ( errno ) return reply_msg ( c , MSG_BAD_FORMAT ) ; r = read_pri ( & pri , pri_buf , & delay_buf ) ; if ( r ) return reply_msg ( c , MSG_BAD_FORMAT ) ; r = read_delay ( & delay , delay_buf , NULL ) ; if ( r ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; j = remove_reserved_job ( c , job_find ( id ) ) ; if ( ! j ) return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; if ( delay ) { z = binlog_reserve_space_update ( j ) ; if ( ! z ) return reply_serr ( c , MSG_OUT_OF_MEMORY ) ; j -> reserved_binlog_space += z ; } j -> pri = pri ; j -> delay = delay ; j -> release_ct ++ ; r = enqueue_job ( j , delay , ! ! delay ) ; if ( r < 0 ) return reply_serr ( c , MSG_INTERNAL_ERROR ) ; if ( r == 1 ) { return reply ( c , MSG_RELEASED , MSG_RELEASED_LEN , STATE_SENDWORD ) ; } bury_job ( j , 0 ) ; reply ( c , MSG_BURIED , MSG_BURIED_LEN , STATE_SENDWORD ) ; break ; case OP_BURY : errno = 0 ; id = strtoull ( c -> cmd + CMD_BURY_LEN , & pri_buf , 10 ) ; if ( errno ) return reply_msg ( c , MSG_BAD_FORMAT ) ; r = read_pri ( & pri , pri_buf , NULL ) ; if ( r ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; j = remove_reserved_job ( c , job_find ( id ) ) ; if ( ! j ) return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; j -> pri = pri ; r = bury_job ( j , 1 ) ; if ( ! r ) return reply_serr ( c , MSG_INTERNAL_ERROR ) ; reply ( c , MSG_BURIED , MSG_BURIED_LEN , STATE_SENDWORD ) ; break ; case OP_KICK : errno = 0 ; count = strtoul ( c -> cmd + CMD_KICK_LEN , & end_buf , 10 ) ; if ( end_buf == c -> cmd + CMD_KICK_LEN ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } if ( errno ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; i = kick_jobs ( c -> use , count ) ; return reply_line ( c , STATE_SENDWORD , \"KICKED<S2SV_blank>%u\\\\r\\\\n\" , i ) ; case OP_TOUCH : errno = 0 ; id = strtoull ( c -> cmd + CMD_TOUCH_LEN , & end_buf , 10 ) ; if ( errno ) return twarn ( \"strtoull\" ) , reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; j = touch_job ( c , job_find ( id ) ) ; if ( j ) { reply ( c , MSG_TOUCHED , MSG_TOUCHED_LEN , STATE_SENDWORD ) ; } else { return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; } break ; case OP_STATS : if ( c -> cmd_len != CMD_STATS_LEN + 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } op_ct [ type ] ++ ; do_stats ( c , fmt_stats , NULL ) ; break ; case OP_JOBSTATS : errno = 0 ; id = strtoull ( c -> cmd + CMD_JOBSTATS_LEN , & end_buf , 10 ) ; if ( errno ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; j = peek_job ( id ) ; if ( ! j ) return reply ( c , MSG_NOTFOUND , MSG_NOTFOUND_LEN , STATE_SENDWORD ) ; if ( ! j -> tube ) return reply_serr ( c , MSG_INTERNAL_ERROR ) ; do_stats ( c , ( fmt_fn ) fmt_job_stats , j ) ; break ; case OP_STATS_TUBE : name = c -> cmd + CMD_STATS_TUBE_LEN ; if ( ! name_is_ok ( name , 200 ) ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; t = tube_find ( name ) ; if ( ! t ) return reply_msg ( c , MSG_NOTFOUND ) ; do_stats ( c , ( fmt_fn ) fmt_stats_tube , t ) ; t = NULL ; break ; case OP_LIST_TUBES : if ( c -> cmd_len != CMD_LIST_TUBES_LEN + 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } op_ct [ type ] ++ ; do_list_tubes ( c , & tubes ) ; break ; case OP_LIST_TUBE_USED : if ( c -> cmd_len != CMD_LIST_TUBE_USED_LEN + 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } op_ct [ type ] ++ ; reply_line ( c , STATE_SENDWORD , \"USING<S2SV_blank>%s\\\\r\\\\n\" , c -> use -> name ) ; break ; case OP_LIST_TUBES_WATCHED : if ( c -> cmd_len != CMD_LIST_TUBES_WATCHED_LEN + 2 ) { return reply_msg ( c , MSG_BAD_FORMAT ) ; } op_ct [ type ] ++ ; do_list_tubes ( c , & c -> watch ) ; break ; case OP_USE : name = c -> cmd + CMD_USE_LEN ; if ( ! name_is_ok ( name , 200 ) ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; TUBE_ASSIGN ( t , tube_find_or_make ( name ) ) ; if ( ! t ) return reply_serr ( c , MSG_OUT_OF_MEMORY ) ; c -> use -> using_ct -- ; TUBE_ASSIGN ( c -> use , t ) ; TUBE_ASSIGN ( t , NULL ) ; c -> use -> using_ct ++ ; reply_line ( c , STATE_SENDWORD , \"USING<S2SV_blank>%s\\\\r\\\\n\" , c -> use -> name ) ; break ; case OP_WATCH : name = c -> cmd + CMD_WATCH_LEN ; if ( ! name_is_ok ( name , 200 ) ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; TUBE_ASSIGN ( t , tube_find_or_make ( name ) ) ; if ( ! t ) return reply_serr ( c , MSG_OUT_OF_MEMORY ) ; r = 1 ; if ( ! ms_contains ( & c -> watch , t ) ) r = ms_append ( & c -> watch , t ) ; TUBE_ASSIGN ( t , NULL ) ; if ( ! r ) return reply_serr ( c , MSG_OUT_OF_MEMORY ) ; reply_line ( c , STATE_SENDWORD , \"WATCHING<S2SV_blank>%d\\\\r\\\\n\" , c -> watch . used ) ; break ; case OP_IGNORE : name = c -> cmd + CMD_IGNORE_LEN ; if ( ! name_is_ok ( name , 200 ) ) return reply_msg ( c , MSG_BAD_FORMAT ) ; op_ct [ type ] ++ ; t = NULL ; for ( i = 0 ; i < c -> watch . used ; i ++ ) { t = c -> watch . items [ i ] ; if ( strncmp ( t -> name , name , MAX_TUBE_NAME_LEN ) == 0 ) break ; t = NULL ; } if ( t && c -> watch . used < 2 ) return reply_msg ( c , MSG_NOT_IGNORED ) ; if ( t ) ms_remove ( & c -> watch , t ) ; t = NULL ; reply_line ( c , STATE_SENDWORD , \"WATCHING<S2SV_blank>%d\\\\r\\\\n\" , c -> watch . used ) ; break ; case OP_QUIT : conn_close ( c ) ; break ; case OP_PAUSE_TUBE : op_ct [ type ] ++ ; r = read_tube_name ( & name , c -> cmd + CMD_PAUSE_TUBE_LEN , & delay_buf ) ; if ( r ) return reply_msg ( c , MSG_BAD_FORMAT ) ; r = read_delay ( & delay , delay_buf , NULL ) ; if ( r ) return reply_msg ( c , MSG_BAD_FORMAT ) ; * delay_buf = '\\\\0' ; t = tube_find ( name ) ; if ( ! t ) return reply_msg ( c , MSG_NOTFOUND ) ; t -> deadline_at = now_usec ( ) + delay ; t -> pause = delay ; t -> stat . pause_ct ++ ; set_main_delay_timeout ( ) ; reply_line ( c , STATE_SENDWORD , \"PAUSED\\\\r\\\\n\" ) ; break ; default : return reply_msg ( c , MSG_UNKNOWN_COMMAND ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return skip ( c , body_size + 2 <S2SV_ModEnd> , MSG_JOB_TOO_BIG )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18839\n\n```\nCWE-200 char * url_decode_r ( char * to , char * url , size_t size ) { char * s = url , * d = to , * e = & to [ size - 1 ] ; while ( * s && d < e ) { if ( unlikely ( * s == '%' ) ) { if ( likely ( s [ 1 ] && s [ 2 ] ) ) { <S2SV_StartBug> * d ++ = from_hex ( s [ 1 ] ) << 4 | from_hex ( s [ 2 ] ) ; <S2SV_EndBug> s += 2 ; } } else if ( unlikely ( * s == '+' ) ) * d ++ = '<S2SV_blank>' ; else * d ++ = * s ; s ++ ; } * d = '\\\\0' ; return to ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { char t <S2SV_ModEnd> = from_hex ( <S2SV_ModStart> [ 2 ] ) ; * d ++ = ( char ) ( ( isprint ( t ) ) ? t : '<S2SV_blank>'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7021\n\n```\nCWE-399 static int filter_frame ( AVFilterLink * inlink , AVFrame * buf ) { AVFilterContext * ctx = inlink -> dst ; FPSContext * s = ctx -> priv ; AVFilterLink * outlink = ctx -> outputs [ 0 ] ; int64_t delta ; int i , ret ; s -> frames_in ++ ; if ( s -> pts == AV_NOPTS_VALUE ) { if ( buf -> pts != AV_NOPTS_VALUE ) { ret = write_to_fifo ( s -> fifo , buf ) ; if ( ret < 0 ) return ret ; if ( s -> start_time != DBL_MAX && s -> start_time != AV_NOPTS_VALUE ) { double first_pts = s -> start_time * AV_TIME_BASE ; first_pts = FFMIN ( FFMAX ( first_pts , INT64_MIN ) , INT64_MAX ) ; s -> first_pts = s -> pts = av_rescale_q ( first_pts , AV_TIME_BASE_Q , inlink -> time_base ) ; av_log ( ctx , AV_LOG_VERBOSE , \"Set<S2SV_blank>first<S2SV_blank>pts<S2SV_blank>to<S2SV_blank>(in:%\" PRId64 \"<S2SV_blank>out:%\" PRId64 \")\\\\n\" , s -> first_pts , av_rescale_q ( first_pts , AV_TIME_BASE_Q , outlink -> time_base ) ) ; } else { s -> first_pts = s -> pts = buf -> pts ; } } else { av_log ( ctx , AV_LOG_WARNING , \"Discarding<S2SV_blank>initial<S2SV_blank>frame(s)<S2SV_blank>with<S2SV_blank>no<S2SV_blank>\" \"timestamp.\\\\n\" ) ; av_frame_free ( & buf ) ; s -> drop ++ ; } return 0 ; } <S2SV_StartBug> if ( buf -> pts == AV_NOPTS_VALUE ) { <S2SV_EndBug> return write_to_fifo ( s -> fifo , buf ) ; } delta = av_rescale_q_rnd ( buf -> pts - s -> pts , inlink -> time_base , outlink -> time_base , s -> rounding ) ; if ( delta < 1 ) { AVFrame * tmp ; int drop = av_fifo_size ( s -> fifo ) / sizeof ( AVFrame * ) ; av_log ( ctx , AV_LOG_DEBUG , \"Dropping<S2SV_blank>%d<S2SV_blank>frame(s).\\\\n\" , drop ) ; s -> drop += drop ; av_fifo_generic_read ( s -> fifo , & tmp , sizeof ( tmp ) , NULL ) ; flush_fifo ( s -> fifo ) ; ret = write_to_fifo ( s -> fifo , tmp ) ; av_frame_free ( & buf ) ; return ret ; } for ( i = 0 ; i < delta ; i ++ ) { AVFrame * buf_out ; av_fifo_generic_read ( s -> fifo , & buf_out , sizeof ( buf_out ) , NULL ) ; if ( ! av_fifo_size ( s -> fifo ) && i < delta - 1 ) { AVFrame * dup = av_frame_clone ( buf_out ) ; av_log ( ctx , AV_LOG_DEBUG , \"Duplicating<S2SV_blank>frame.\\\\n\" ) ; if ( dup ) ret = write_to_fifo ( s -> fifo , dup ) ; else ret = AVERROR ( ENOMEM ) ; if ( ret < 0 ) { av_frame_free ( & buf_out ) ; av_frame_free ( & buf ) ; return ret ; } s -> dup ++ ; } buf_out -> pts = av_rescale_q ( s -> first_pts , inlink -> time_base , outlink -> time_base ) + s -> frames_out ; if ( ( ret = ff_filter_frame ( outlink , buf_out ) ) < 0 ) { av_frame_free ( & buf ) ; return ret ; } s -> frames_out ++ ; } flush_fifo ( s -> fifo ) ; ret = write_to_fifo ( s -> fifo , buf ) ; s -> pts = s -> first_pts + av_rescale_q ( s -> frames_out , outlink -> time_base , inlink -> time_base ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pts == AV_NOPTS_VALUE || av_fifo_size ( s -> fifo ) <= 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14041\n\n```\nCWE-787 opj_image_t * pgxtoimage ( const char * filename , opj_cparameters_t * parameters ) { FILE * f = NULL ; int w , h , prec ; int i , numcomps , max ; OPJ_COLOR_SPACE color_space ; opj_image_cmptparm_t cmptparm ; opj_image_t * image = NULL ; int adjustS , ushift , dshift , force8 ; char endian1 , endian2 , sign ; char signtmp [ 32 ] ; char temp [ 32 ] ; int bigendian ; opj_image_comp_t * comp = NULL ; numcomps = 1 ; color_space = OPJ_CLRSPC_GRAY ; memset ( & cmptparm , 0 , sizeof ( opj_image_cmptparm_t ) ) ; max = 0 ; f = fopen ( filename , \"rb\" ) ; if ( ! f ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading<S2SV_blank>!\\\\n\" , filename ) ; return NULL ; } fseek ( f , 0 , SEEK_SET ) ; <S2SV_StartBug> if ( fscanf ( f , \"PG%[<S2SV_blank>\\\\t]%c%c%[<S2SV_blank>\\\\t+-]%d%[<S2SV_blank>\\\\t]%d%[<S2SV_blank>\\\\t]%d\" , temp , & endian1 , <S2SV_EndBug> & endian2 , signtmp , & prec , temp , & w , temp , & h ) != 9 ) { fclose ( f ) ; fprintf ( stderr , \"ERROR:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>the<S2SV_blank>right<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>from<S2SV_blank>the<S2SV_blank>fscanf()<S2SV_blank>function!\\\\n\" ) ; return NULL ; } i = 0 ; sign = '+' ; while ( signtmp [ i ] != '\\\\0' ) { if ( signtmp [ i ] == '-' ) { sign = '-' ; } i ++ ; } fgetc ( f ) ; if ( endian1 == 'M' && endian2 == 'L' ) { bigendian = 1 ; } else if ( endian2 == 'M' && endian1 == 'L' ) { bigendian = 0 ; } else { fclose ( f ) ; fprintf ( stderr , \"Bad<S2SV_blank>pgx<S2SV_blank>header,<S2SV_blank>please<S2SV_blank>check<S2SV_blank>input<S2SV_blank>file\\\\n\" ) ; return NULL ; } cmptparm . x0 = ( OPJ_UINT32 ) parameters -> image_offset_x0 ; cmptparm . y0 = ( OPJ_UINT32 ) parameters -> image_offset_y0 ; cmptparm . w = ! cmptparm . x0 ? ( OPJ_UINT32 ) ( ( w - 1 ) * parameters -> subsampling_dx + 1 ) : cmptparm . x0 + ( OPJ_UINT32 ) ( w - 1 ) * ( OPJ_UINT32 ) parameters -> subsampling_dx + 1 ; cmptparm . h = ! cmptparm . y0 ? ( OPJ_UINT32 ) ( ( h - 1 ) * parameters -> subsampling_dy + 1 ) : cmptparm . y0 + ( OPJ_UINT32 ) ( h - 1 ) * ( OPJ_UINT32 ) parameters -> subsampling_dy + 1 ; if ( sign == '-' ) { cmptparm . sgnd = 1 ; } else { cmptparm . sgnd = 0 ; } if ( prec < 8 ) { force8 = 1 ; ushift = 8 - prec ; dshift = prec - ushift ; if ( cmptparm . sgnd ) { adjustS = ( 1 << ( prec - 1 ) ) ; } else { adjustS = 0 ; } cmptparm . sgnd = 0 ; prec = 8 ; } else { ushift = dshift = force8 = adjustS = 0 ; } cmptparm . prec = ( OPJ_UINT32 ) prec ; cmptparm . bpp = ( OPJ_UINT32 ) prec ; cmptparm . dx = ( OPJ_UINT32 ) parameters -> subsampling_dx ; cmptparm . dy = ( OPJ_UINT32 ) parameters -> subsampling_dy ; image = opj_image_create ( ( OPJ_UINT32 ) numcomps , & cmptparm , color_space ) ; if ( ! image ) { fclose ( f ) ; return NULL ; } image -> x0 = cmptparm . x0 ; image -> y0 = cmptparm . x0 ; image -> x1 = cmptparm . w ; image -> y1 = cmptparm . h ; comp = & image -> comps [ 0 ] ; for ( i = 0 ; i < w * h ; i ++ ) { int v ; if ( force8 ) { v = readuchar ( f ) + adjustS ; v = ( v << ushift ) + ( v >> dshift ) ; comp -> data [ i ] = ( unsigned char ) v ; if ( v > max ) { max = v ; } continue ; } if ( comp -> prec == 8 ) { if ( ! comp -> sgnd ) { v = readuchar ( f ) ; } else { v = ( char ) readuchar ( f ) ; } } else if ( comp -> prec <= 16 ) { if ( ! comp -> sgnd ) { v = readushort ( f , bigendian ) ; } else { v = ( short ) readushort ( f , bigendian ) ; } } else { if ( ! comp -> sgnd ) { v = ( int ) readuint ( f , bigendian ) ; } else { v = ( int ) readuint ( f , bigendian ) ; } } if ( v > max ) { max = v ; } comp -> data [ i ] = v ; } fclose ( f ) ; comp -> bpp = ( OPJ_UINT32 ) int_floorlog2 ( max ) + 1 ; return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( f , \"PG%31[<S2SV_blank>\\\\t]%c%c%31[<S2SV_blank>\\\\t+-]%d%31[<S2SV_blank>\\\\t]%d%31[<S2SV_blank>\\\\t]%d\" <S2SV_ModEnd> , temp ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_free_message_fields_buffer ( NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( fields ) { if ( fields -> Buffer ) { free ( fields -> Buffer ) ; fields -> Len = 0 ; fields -> MaxLen = 0 ; fields -> Buffer = NULL ; fields -> BufferOffset = 0 ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15116\n\n```\nCWE-476 static int crypto_rng_init_tfm ( struct crypto_tfm * tfm ) { <S2SV_StartBug> struct crypto_rng * rng = __crypto_rng_cast ( tfm ) ; <S2SV_EndBug> struct rng_alg * alg = crypto_rng_alg ( rng ) ; struct old_rng_alg * oalg = crypto_old_rng_alg ( rng ) ; if ( oalg -> rng_make_random ) { rng -> generate = generate ; rng -> seed = rngapi_reset ; rng -> seedsize = oalg -> seedsize ; return 0 ; } rng -> generate = alg -> generate ; rng -> seed = alg -> seed ; rng -> seedsize = alg -> seedsize ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tfm ) { <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14767\n\n```\nCWE-119 static int sdp_parse_fmtp_config_h264 ( AVFormatContext * s , AVStream * stream , PayloadContext * h264_data , const char * attr , const char * value ) { AVCodecParameters * par = stream -> codecpar ; if ( ! strcmp ( attr , \"packetization-mode\" ) ) { av_log ( s , AV_LOG_DEBUG , \"RTP<S2SV_blank>Packetization<S2SV_blank>Mode:<S2SV_blank>%d\\\\n\" , atoi ( value ) ) ; h264_data -> packetization_mode = atoi ( value ) ; if ( h264_data -> packetization_mode > 1 ) av_log ( s , AV_LOG_ERROR , \"Interleaved<S2SV_blank>RTP<S2SV_blank>mode<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>yet.\\\\n\" ) ; } else if ( ! strcmp ( attr , \"profile-level-id\" ) ) { if ( strlen ( value ) == 6 ) parse_profile_level_id ( s , h264_data , value ) ; } else if ( ! strcmp ( attr , \"sprop-parameter-sets\" ) ) { int ret ; <S2SV_StartBug> if ( value [ strlen ( value ) - 1 ] == ',' ) { <S2SV_EndBug> av_log ( s , AV_LOG_WARNING , \"Missing<S2SV_blank>PPS<S2SV_blank>in<S2SV_blank>sprop-parameter-sets,<S2SV_blank>ignoring\\\\n\" ) ; return 0 ; } par -> extradata_size = 0 ; av_freep ( & par -> extradata ) ; ret = ff_h264_parse_sprop_parameter_sets ( s , & par -> extradata , & par -> extradata_size , value ) ; av_log ( s , AV_LOG_DEBUG , \"Extradata<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%p<S2SV_blank>(size:<S2SV_blank>%d)\\\\n\" , par -> extradata , par -> extradata_size ) ; return ret ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( * value == 0 ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14043\n\n```\nCWE-732 static M_fs_error_t M_fs_copy_file ( const char * path_old , const char * path_new , M_fs_file_mode_t mode , M_fs_progress_cb_t cb , M_fs_progress_flags_t progress_flags , M_fs_progress_t * progress , const M_fs_perms_t * perms ) { M_fs_file_t * fd_old ; M_fs_file_t * fd_new ; M_fs_info_t * info = NULL ; unsigned char temp [ M_FS_BUF_SIZE ] ; size_t read_len ; size_t wrote_len ; size_t wrote_total = 0 ; size_t offset ; M_fs_error_t res ; <S2SV_StartBug> if ( M_fs_perms_can_access ( path_new , M_FS_PERMS_MODE_NONE ) == M_FS_ERROR_SUCCESS ) { <S2SV_EndBug> res = M_fs_delete ( path_new , M_FALSE , NULL , M_FS_PROGRESS_NOEXTRA ) ; if ( res != M_FS_ERROR_SUCCESS ) { return res ; } } res = M_fs_file_open ( & fd_old , path_old , M_FS_BUF_SIZE , M_FS_FILE_MODE_READ | M_FS_FILE_MODE_NOCREATE , NULL ) ; if ( res != M_FS_ERROR_SUCCESS ) { return res ; } if ( perms == NULL && mode & M_FS_FILE_MODE_PRESERVE_PERMS ) { res = M_fs_info_file ( & info , fd_old , M_FS_PATH_INFO_FLAGS_NONE ) ; if ( res != M_FS_ERROR_SUCCESS ) { M_fs_file_close ( fd_old ) ; return res ; } perms = M_fs_info_get_perms ( info ) ; } res = M_fs_file_open ( & fd_new , path_new , M_FS_BUF_SIZE , M_FS_FILE_MODE_WRITE | M_FS_FILE_MODE_OVERWRITE , perms ) ; M_fs_info_destroy ( info ) ; if ( res != M_FS_ERROR_SUCCESS ) { M_fs_file_close ( fd_old ) ; return res ; } while ( ( res = M_fs_file_read ( fd_old , temp , sizeof ( temp ) , & read_len , M_FS_FILE_RW_NORMAL ) ) == M_FS_ERROR_SUCCESS && read_len != 0 ) { offset = 0 ; while ( offset < read_len ) { res = M_fs_file_write ( fd_new , temp + offset , read_len - offset , & wrote_len , M_FS_FILE_RW_NORMAL ) ; offset += wrote_len ; wrote_total += wrote_len ; if ( cb ) { M_fs_progress_set_result ( progress , res ) ; if ( progress_flags & M_FS_PROGRESS_SIZE_TOTAL ) { M_fs_progress_set_size_total_progess ( progress , M_fs_progress_get_size_total_progess ( progress ) + wrote_len ) ; } if ( progress_flags & M_FS_PROGRESS_SIZE_CUR ) { M_fs_progress_set_size_current_progress ( progress , wrote_total ) ; } if ( progress_flags & M_FS_PROGRESS_COUNT ) { M_fs_progress_set_count ( progress , M_fs_progress_get_count ( progress ) + 1 ) ; } if ( ! cb ( progress ) ) { res = M_FS_ERROR_CANCELED ; } } if ( res != M_FS_ERROR_SUCCESS ) { break ; } } if ( res != M_FS_ERROR_SUCCESS ) { break ; } } M_fs_file_close ( fd_old ) ; M_fs_file_close ( fd_new ) ; if ( res != M_FS_ERROR_SUCCESS ) { return res ; } return M_FS_ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> M_fs_error_t res ; <S2SV_ModEnd> res = M_fs_file_open\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17407\n\n```\nCWE-119 static void t1_check_unusual_charstring ( void ) { char * p = strstr ( t1_line_array , charstringname ) + strlen ( charstringname ) ; int i ; if ( sscanf ( p , \"%i\" , & i ) != 1 ) { strcpy ( t1_buf_array , t1_line_array ) ; * ( strend ( t1_buf_array ) - 1 ) = '<S2SV_blank>' ; t1_getline ( ) ; <S2SV_StartBug> strcat ( t1_buf_array , t1_line_array ) ; <S2SV_EndBug> strcpy ( t1_line_array , t1_buf_array ) ; t1_line_ptr = eol ( t1_line_array ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; alloc_array ( t1_buf , strlen ( t1_line_array ) + strlen ( t1_buf_array ) + 1 , T1_BUF_SIZE ) ; <S2SV_ModStart> t1_buf_array , t1_line_array ) ; alloc_array ( t1_line , strlen ( t1_buf_array ) + 1 , T1_BUF_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4127\n\n```\nCWE-264 int scsi_cmd_blk_ioctl ( struct block_device * bd , fmode_t mode , unsigned int cmd , void __user * arg ) { <S2SV_StartBug> return scsi_cmd_ioctl ( bd -> bd_disk -> queue , bd -> bd_disk , mode , cmd , arg ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg ) { int ret ; ret = scsi_verify_blk_ioctl ( bd , cmd ) ; if ( ret < 0 ) return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 static int muscle_list_files ( sc_card_t * card , u8 * buf , size_t bufLen ) { muscle_private_t * priv = MUSCLE_DATA ( card ) ; mscfs_t * fs = priv -> fs ; int x ; int count = 0 ; mscfs_check_cache ( priv -> fs ) ; for ( x = 0 ; x < fs -> cache . size ; x ++ ) { u8 * oid = fs -> cache . array [ x ] . objectId . id ; <S2SV_StartBug> sc_debug ( card -> ctx , SC_LOG_DEBUG_NORMAL , <S2SV_EndBug> \"FILE:<S2SV_blank>%02X%02X%02X%02X\\\\n\" , oid [ 0 ] , oid [ 1 ] , oid [ 2 ] , oid [ 3 ] ) ; if ( 0 == memcmp ( fs -> currentPath , oid , 2 ) ) { buf [ 0 ] = oid [ 2 ] ; buf [ 1 ] = oid [ 3 ] ; if ( buf [ 0 ] == 0x00 && buf [ 1 ] == 0x00 ) continue ; buf += 2 ; count += 2 ; <S2SV_StartBug> } <S2SV_EndBug> } return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . id ; if ( bufLen < 2 ) break ; <S2SV_ModStart> += 2 ; bufLen -= 2 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 static int sc_pkcs15emu_sc_hsm_init ( sc_pkcs15_card_t * p15card ) { sc_card_t * card = p15card -> card ; sc_hsm_private_data_t * priv = ( sc_hsm_private_data_t * ) card -> drv_data ; sc_file_t * file = NULL ; sc_path_t path ; u8 filelist [ MAX_EXT_APDU_LENGTH ] ; int filelistlength ; int r , i ; sc_cvc_t devcert ; struct sc_app_info * appinfo ; struct sc_pkcs15_auth_info pin_info ; struct sc_pkcs15_object pin_obj ; struct sc_pin_cmd_data pindata ; u8 efbin [ 1024 ] ; u8 * ptr ; size_t len ; LOG_FUNC_CALLED ( card -> ctx ) ; appinfo = calloc ( 1 , sizeof ( struct sc_app_info ) ) ; if ( appinfo == NULL ) { LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; } appinfo -> aid = sc_hsm_aid ; appinfo -> ddo . aid = sc_hsm_aid ; p15card -> app = appinfo ; sc_path_set ( & path , SC_PATH_TYPE_DF_NAME , sc_hsm_aid . value , sc_hsm_aid . len , 0 , 0 ) ; r = sc_select_file ( card , & path , & file ) ; LOG_TEST_RET ( card -> ctx , r , \"Could<S2SV_blank>not<S2SV_blank>select<S2SV_blank>SmartCard-HSM<S2SV_blank>application\" ) ; p15card -> card -> version . hw_major = 24 ; p15card -> card -> version . hw_minor = 13 ; if ( file && file -> prop_attr && file -> prop_attr_len >= 2 ) { p15card -> card -> version . fw_major = file -> prop_attr [ file -> prop_attr_len - 2 ] ; p15card -> card -> version . fw_minor = file -> prop_attr [ file -> prop_attr_len - 1 ] ; } sc_file_free ( file ) ; if ( priv -> EF_C_DevAut && priv -> EF_C_DevAut_len ) { ptr = priv -> EF_C_DevAut ; len = priv -> EF_C_DevAut_len ; } else { len = sizeof efbin ; r = read_file ( p15card , ( u8 * ) \"\\\\x2F\\\\x02\" , efbin , & len , 1 ) ; LOG_TEST_RET ( card -> ctx , r , \"Skipping<S2SV_blank>optional<S2SV_blank>EF.C_DevAut\" ) ; <S2SV_StartBug> ptr = realloc ( priv -> EF_C_DevAut , len ) ; <S2SV_EndBug> if ( ptr ) { memcpy ( ptr , efbin , len ) ; priv -> EF_C_DevAut = ptr ; <S2SV_StartBug> priv -> EF_C_DevAut_len = len ; <S2SV_EndBug> } ptr = efbin ; } memset ( & devcert , 0 , sizeof ( devcert ) ) ; r = sc_pkcs15emu_sc_hsm_decode_cvc ( p15card , ( const u8 * * ) & ptr , & len , & devcert ) ; LOG_TEST_RET ( card -> ctx , r , \"Could<S2SV_blank>not<S2SV_blank>decode<S2SV_blank>EF.C_DevAut\" ) ; sc_pkcs15emu_sc_hsm_read_tokeninfo ( p15card ) ; if ( p15card -> tokeninfo -> label == NULL ) { if ( p15card -> card -> type == SC_CARD_TYPE_SC_HSM_GOID || p15card -> card -> type == SC_CARD_TYPE_SC_HSM_SOC ) { p15card -> tokeninfo -> label = strdup ( \"GoID\" ) ; } else { p15card -> tokeninfo -> label = strdup ( \"SmartCard-HSM\" ) ; } if ( p15card -> tokeninfo -> label == NULL ) LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; } if ( ( p15card -> tokeninfo -> manufacturer_id != NULL ) && ! strcmp ( \"(unknown)\" , p15card -> tokeninfo -> manufacturer_id ) ) { free ( p15card -> tokeninfo -> manufacturer_id ) ; p15card -> tokeninfo -> manufacturer_id = NULL ; } if ( p15card -> tokeninfo -> manufacturer_id == NULL ) { if ( p15card -> card -> type == SC_CARD_TYPE_SC_HSM_GOID || p15card -> card -> type == SC_CARD_TYPE_SC_HSM_SOC ) { p15card -> tokeninfo -> manufacturer_id = strdup ( \"Bundesdruckerei<S2SV_blank>GmbH\" ) ; } else { p15card -> tokeninfo -> manufacturer_id = strdup ( \"www.CardContact.de\" ) ; } if ( p15card -> tokeninfo -> manufacturer_id == NULL ) LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; } appinfo -> label = strdup ( p15card -> tokeninfo -> label ) ; if ( appinfo -> label == NULL ) LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; len = strnlen ( devcert . chr , sizeof devcert . chr ) ; assert ( len >= 8 ) ; len -= 5 ; p15card -> tokeninfo -> serial_number = calloc ( len + 1 , 1 ) ; if ( p15card -> tokeninfo -> serial_number == NULL ) LOG_FUNC_RETURN ( card -> ctx , SC_ERROR_OUT_OF_MEMORY ) ; memcpy ( p15card -> tokeninfo -> serial_number , devcert . chr , len ) ; * ( p15card -> tokeninfo -> serial_number + len ) = 0 ; sc_hsm_set_serialnr ( card , p15card -> tokeninfo -> serial_number ) ; sc_pkcs15emu_sc_hsm_free_cvc ( & devcert ) ; memset ( & pin_info , 0 , sizeof ( pin_info ) ) ; memset ( & pin_obj , 0 , sizeof ( pin_obj ) ) ; pin_info . auth_id . len = 1 ; pin_info . auth_id . value [ 0 ] = 1 ; pin_info . path . aid = sc_hsm_aid ; pin_info . auth_type = SC_PKCS15_PIN_AUTH_TYPE_PIN ; pin_info . attrs . pin . reference = 0x81 ; pin_info . attrs . pin . flags = SC_PKCS15_PIN_FLAG_LOCAL | SC_PKCS15_PIN_FLAG_INITIALIZED | SC_PKCS15_PIN_FLAG_EXCHANGE_REF_DATA ; pin_info . attrs . pin . type = SC_PKCS15_PIN_TYPE_ASCII_NUMERIC ; pin_info . attrs . pin . min_length = 6 ; pin_info . attrs . pin . stored_length = 0 ; pin_info . attrs . pin . max_length = 15 ; pin_info . attrs . pin . pad_char = '\\\\0' ; pin_info . tries_left = 3 ; pin_info . max_tries = 3 ; pin_obj . auth_id . len = 1 ; pin_obj . auth_id . value [ 0 ] = 2 ; strlcpy ( pin_obj . label , \"UserPIN\" , sizeof ( pin_obj . label ) ) ; pin_obj . flags = SC_PKCS15_CO_FLAG_PRIVATE | SC_PKCS15_CO_FLAG_MODIFIABLE ; r = sc_pkcs15emu_add_pin_obj ( p15card , & pin_obj , & pin_info ) ; if ( r < 0 ) LOG_FUNC_RETURN ( card -> ctx , r ) ; memset ( & pin_info , 0 , sizeof ( pin_info ) ) ; memset ( & pin_obj , 0 , sizeof ( pin_obj ) ) ; pin_info . auth_id . len = 1 ; pin_info . auth_id . value [ 0 ] = 2 ; pin_info . path . aid = sc_hsm_aid ; pin_info . auth_type = SC_PKCS15_PIN_AUTH_TYPE_PIN ; pin_info . attrs . pin . reference = 0x88 ; pin_info . attrs . pin . flags = SC_PKCS15_PIN_FLAG_LOCAL | SC_PKCS15_PIN_FLAG_INITIALIZED | SC_PKCS15_PIN_FLAG_UNBLOCK_DISABLED | SC_PKCS15_PIN_FLAG_SO_PIN ; pin_info . attrs . pin . type = SC_PKCS15_PIN_TYPE_BCD ; pin_info . attrs . pin . min_length = 16 ; pin_info . attrs . pin . stored_length = 0 ; pin_info . attrs . pin . max_length = 16 ; pin_info . attrs . pin . pad_char = '\\\\0' ; pin_info . tries_left = 15 ; pin_info . max_tries = 15 ; strlcpy ( pin_obj . label , \"SOPIN\" , sizeof ( pin_obj . label ) ) ; pin_obj . flags = SC_PKCS15_CO_FLAG_PRIVATE ; r = sc_pkcs15emu_add_pin_obj ( p15card , & pin_obj , & pin_info ) ; if ( r < 0 ) LOG_FUNC_RETURN ( card -> ctx , r ) ; if ( card -> type == SC_CARD_TYPE_SC_HSM_SOC || card -> type == SC_CARD_TYPE_SC_HSM_GOID ) { r = SC_SUCCESS ; } else { memset ( & pindata , 0 , sizeof ( pindata ) ) ; pindata . cmd = SC_PIN_CMD_GET_INFO ; pindata . pin_type = SC_AC_CHV ; pindata . pin_reference = 0x85 ; r = sc_pin_cmd ( card , & pindata , NULL ) ; } if ( r == SC_ERROR_DATA_OBJECT_NOT_FOUND ) { memset ( & pindata , 0 , sizeof ( pindata ) ) ; pindata . cmd = SC_PIN_CMD_GET_INFO ; pindata . pin_type = SC_AC_CHV ; pindata . pin_reference = 0x86 ; r = sc_pin_cmd ( card , & pindata , NULL ) ; } if ( ( r != SC_ERROR_DATA_OBJECT_NOT_FOUND ) && ( r != SC_ERROR_INCORRECT_PARAMETERS ) ) card -> caps |= SC_CARD_CAP_PROTECTED_AUTHENTICATION_PATH ; filelistlength = sc_list_files ( card , filelist , sizeof ( filelist ) ) ; LOG_TEST_RET ( card -> ctx , filelistlength , \"Could<S2SV_blank>not<S2SV_blank>enumerate<S2SV_blank>file<S2SV_blank>and<S2SV_blank>key<S2SV_blank>identifier\" ) ; for ( i = 0 ; i < filelistlength ; i += 2 ) { switch ( filelist [ i ] ) { case KEY_PREFIX : r = sc_pkcs15emu_sc_hsm_add_prkd ( p15card , filelist [ i + 1 ] ) ; break ; case DCOD_PREFIX : r = sc_pkcs15emu_sc_hsm_add_dcod ( p15card , filelist [ i + 1 ] ) ; break ; case CD_PREFIX : r = sc_pkcs15emu_sc_hsm_add_cd ( p15card , filelist [ i + 1 ] ) ; break ; } if ( r != SC_SUCCESS ) { sc_log ( card -> ctx , \"Error<S2SV_blank>%d<S2SV_blank>adding<S2SV_blank>elements<S2SV_blank>to<S2SV_blank>framework\" , r ) ; } } LOG_FUNC_RETURN ( card -> ctx , SC_SUCCESS ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Skipping<S2SV_blank>optional<S2SV_blank>EF.C_DevAut\" ) ; if ( len > 0 ) { <S2SV_ModStart> = len ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> swabHorAcc16 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { uint16 * wp = ( uint16 * ) cp0 ; tmsize_t wc = cc / 2 ; TIFFSwabArrayOfShort ( wp , wc ) ; <S2SV_StartBug> horAcc16 ( tif , cp0 , cc ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> swabHorAcc16 ( TIFF <S2SV_ModStart> wc ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rc_get_second_pass_params ( VP9_COMP * cpi ) { VP9_COMMON * const cm = & cpi -> common ; RATE_CONTROL * const rc = & cpi -> rc ; <S2SV_StartBug> struct twopass_rc * const twopass = & cpi -> twopass ; <S2SV_EndBug> int frames_left ; FIRSTPASS_STATS this_frame ; <S2SV_StartBug> FIRSTPASS_STATS this_frame_copy ; <S2SV_EndBug> <S2SV_StartBug> double this_frame_intra_error ; <S2SV_EndBug> double this_frame_coded_error ; int target ; LAYER_CONTEXT * lc = NULL ; <S2SV_StartBug> int is_spatial_svc = ( cpi -> use_svc && cpi -> svc . number_temporal_layers == 1 ) ; <S2SV_EndBug> if ( is_spatial_svc ) { <S2SV_StartBug> lc = & cpi -> svc . layer_context [ cpi -> svc . spatial_layer_id ] ; <S2SV_EndBug> frames_left = ( int ) ( twopass -> total_stats . count - lc -> current_video_frame_in_layer ) ; } else { frames_left = ( int ) ( twopass -> total_stats . count - <S2SV_StartBug> cm -> current_video_frame ) ; <S2SV_EndBug> } if ( ! twopass -> stats_in ) return ; if ( cpi -> refresh_alt_ref_frame ) { cm -> frame_type = INTER_FRAME ; vp9_rc_set_frame_target ( cpi , twopass -> gf_bits ) ; return ; } vp9_clear_system_state ( ) ; if ( is_spatial_svc && twopass -> kf_intra_err_min == 0 ) { twopass -> kf_intra_err_min = KF_MB_INTRA_MIN * cpi -> common . MBs ; twopass -> gf_intra_err_min = GF_MB_INTRA_MIN * cpi -> common . MBs ; } if ( cpi -> oxcf . end_usage == USAGE_CONSTANT_QUALITY ) { twopass -> active_worst_quality = cpi -> oxcf . cq_level ; } else if ( cm -> current_video_frame == 0 || ( is_spatial_svc && lc -> current_video_frame_in_layer == 0 ) ) { const int section_target_bandwidth = ( int ) ( twopass -> bits_left / frames_left ) ; const int tmp_q = vp9_twopass_worst_quality ( cpi , & twopass -> total_left_stats , section_target_bandwidth ) ; twopass -> active_worst_quality = tmp_q ; rc -> ni_av_qi = tmp_q ; rc -> avg_q = vp9_convert_qindex_to_q ( tmp_q ) ; } vp9_zero ( this_frame ) ; if ( EOF == input_stats ( twopass , & this_frame ) ) return ; this_frame_intra_error = this_frame . intra_error ; this_frame_coded_error = this_frame . coded_error ; if ( rc -> frames_to_key == 0 || ( cm -> frame_flags & FRAMEFLAGS_KEY ) ) { this_frame_copy = this_frame ; find_next_key_frame ( cpi , & this_frame_copy ) ; if ( cpi -> use_svc && cpi -> svc . number_temporal_layers == 1 && cpi -> svc . spatial_layer_id > 0 ) { cm -> frame_type = INTER_FRAME ; } } else { cm -> frame_type = INTER_FRAME ; } <S2SV_StartBug> if ( rc -> frames_till_gf_update_due == 0 ) { <S2SV_EndBug> this_frame_copy = this_frame ; # if CONFIG_MULTIPLE_ARF if ( cpi -> multi_arf_enabled ) { define_fixed_arf_period ( cpi ) ; } else { # endif define_gf_group ( cpi , & this_frame_copy ) ; # if CONFIG_MULTIPLE_ARF } # endif if ( twopass -> gf_zeromotion_pct > 995 ) { if ( ! cm -> show_frame ) cpi -> allow_encode_breakout = ENCODE_BREAKOUT_DISABLED ; else cpi -> allow_encode_breakout = ENCODE_BREAKOUT_LIMITED ; } rc -> frames_till_gf_update_due = rc -> baseline_gf_interval ; cpi -> refresh_golden_frame = 1 ; } else { this_frame_copy = this_frame ; assign_std_frame_bits ( cpi , & this_frame_copy ) ; } twopass -> this_iiratio = ( int ) ( this_frame_intra_error / DOUBLE_DIVIDE_CHECK ( this_frame_coded_error ) ) ; { FIRSTPASS_STATS next_frame ; if ( lookup_next_frame_stats ( twopass , & next_frame ) != EOF ) { twopass -> next_iiratio = ( int ) ( next_frame . intra_error / DOUBLE_DIVIDE_CHECK ( next_frame . coded_error ) ) ; } } if ( cpi -> common . frame_type == KEY_FRAME ) target = vp9_rc_clamp_iframe_target_size ( cpi , rc -> this_frame_target ) ; else target = vp9_rc_clamp_pframe_target_size ( cpi , rc -> this_frame_target ) ; vp9_rc_set_frame_target ( cpi , target ) ; subtract_stats ( & twopass -> total_left_stats , & this_frame ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rc ; TWO_PASS <S2SV_ModEnd> * const twopass <S2SV_ModStart> cpi -> twopass ; GF_GROUP * const gf_group = & twopass -> gf_group <S2SV_ModStart> FIRSTPASS_STATS this_frame ; int target_rate ; LAYER_CONTEXT * const lc = is_two_pass_svc ( cpi ) ? & cpi -> svc . layer_context [ cpi -> svc . spatial_layer_id ] : 0 ; if ( lc != NULL ) { frames_left = ( int ) ( twopass -> total_stats . count - lc -> current_video_frame_in_layer ) ; } else { frames_left = ( int ) ( twopass -> total_stats . count - cm -> current_video_frame ) ; } if ( ! twopass -> stats_in ) return ; if ( gf_group -> update_type [ gf_group -> index ] == ARF_UPDATE ) { int target_rate ; configure_buffer_updates ( cpi ) ; target_rate = gf_group -> bit_allocation [ gf_group -> index ] ; target_rate = vp9_rc_clamp_pframe_target_size ( cpi , target_rate ) ; rc -> base_frame_target = target_rate ; cm -> frame_type = INTER_FRAME ; if ( lc != NULL ) { if ( cpi -> svc . spatial_layer_id == 0 ) { lc -> is_key_frame = 0 ; } else { lc -> is_key_frame = cpi -> svc . layer_context [ 0 ] . is_key_frame ; if ( lc -> is_key_frame ) cpi -> ref_frame_flags &= ( ~ VP9_LAST_FLAG ) ; } } if ( cpi -> sf . allow_partition_search_skip && cpi -> oxcf . pass == 2 && ( ! cpi -> use_svc || is_two_pass_svc ( cpi ) ) ) { cpi -> partition_search_skippable_frame = is_skippable_frame ( cpi ) ; } return ; } vpx_clear_system_state ( ) ; if ( cpi -> oxcf . rc_mode == VPX_Q ) { twopass -> active_worst_quality = cpi -> oxcf . cq_level ; } else if ( cm -> current_video_frame == 0 || ( lc != NULL && lc -> current_video_frame_in_layer == 0 ) ) { const int section_target_bandwidth = ( int ) ( twopass -> bits_left / frames_left ) ; const double section_length = twopass -> total_left_stats . count ; const double section_error = twopass -> total_left_stats . coded_error / section_length ; const double section_intra_skip = twopass -> total_left_stats . intra_skip_pct / section_length ; const double section_inactive_zone = ( twopass -> total_left_stats . inactive_zone_rows * 2 ) / ( ( double ) cm -> mb_rows * section_length ) ; const int tmp_q = get_twopass_worst_quality ( cpi , section_error , section_intra_skip + section_inactive_zone , section_target_bandwidth , DEFAULT_GRP_WEIGHT ) ; twopass -> active_worst_quality = tmp_q ; twopass -> baseline_active_worst_quality = tmp_q ; rc -> ni_av_qi = tmp_q ; rc -> last_q [ INTER_FRAME ] = tmp_q ; rc -> avg_q = vp9_convert_qindex_to_q ( tmp_q , cm -> bit_depth ) ; rc -> avg_frame_qindex [ INTER_FRAME ] = tmp_q ; rc -> last_q [ KEY_FRAME ] = ( tmp_q + cpi -> oxcf . best_allowed_q ) / 2 ; rc -> avg_frame_qindex [ KEY_FRAME ] = rc -> last_q [ KEY_FRAME ] ; } vp9_zero ( this_frame ) ; if ( EOF == input_stats ( twopass , & this_frame ) ) return ; if ( this_frame . intra_skip_pct >= FC_ANIMATION_THRESH ) twopass -> fr_content_type = FC_GRAPHICS_ANIMATION ; else twopass -> fr_content_type = FC_NORMAL ; if ( rc -> frames_to_key == 0 || ( cpi -> frame_flags & FRAMEFLAGS_KEY ) ) { <S2SV_ModStart> FIRSTPASS_STATS this_frame_copy ; this_frame_copy = this_frame ; find_next_key_frame ( cpi , & this_frame ) ; this_frame = this_frame_copy ; } else { cm -> frame_type = INTER_FRAME ; } if ( lc != NULL ) { if ( <S2SV_ModEnd> cpi -> svc <S2SV_ModStart> -> svc . spatial_layer_id == 0 ) { lc -> is_key_frame = ( cm -> frame_type == KEY_FRAME ) ; if ( lc -> is_key_frame ) { cpi -> ref_frame_flags &= ( ~ VP9_LAST_FLAG & ~ VP9_GOLD_FLAG & ~ VP9_ALT_FLAG ) ; lc -> frames_from_key_frame = 0 ; cpi -> svc . encode_intra_empty_frame = 1 ; } } else { cm -> frame_type = INTER_FRAME ; lc -> is_key_frame = <S2SV_ModEnd> cpi -> svc <S2SV_ModStart> . layer_context [ 0 ] . is_key_frame ; if ( lc -> is_key_frame ) { cpi -> ref_frame_flags &= ( ~ VP9_LAST_FLAG ) ; lc -> frames_from_key_frame = 0 ; } } } if ( rc -> frames_till_gf_update_due == 0 ) { define_gf_group ( cpi , & this_frame ) ; rc -> frames_till_gf_update_due = rc -> baseline_gf_interval ; if ( lc != NULL ) cpi -> refresh_golden_frame = 1 ; # if ARF_STATS_OUTPUT { FILE * fpfile ; fpfile = fopen ( \"arf.stt\" , \"a\" ) ; ++ arf_count ; fprintf ( fpfile , \"%10d<S2SV_blank>%10ld<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>%10ld\\\\n\" , <S2SV_ModEnd> cm -> current_video_frame <S2SV_ModStart> cm -> current_video_frame , <S2SV_ModEnd> rc -> frames_till_gf_update_due <S2SV_ModStart> rc -> frames_till_gf_update_due , rc -> kf_boost , arf_count , rc -> gfu_boost ) ; fclose ( fpfile ) ; } # endif } configure_buffer_updates ( cpi ) ; if ( cpi -> sf . allow_partition_search_skip && cpi -> oxcf . pass == 2 && ( ! cpi -> use_svc || is_two_pass_svc ( cpi ) ) ) { cpi -> partition_search_skippable_frame = is_skippable_frame ( cpi ) ; } target_rate = gf_group -> bit_allocation [ gf_group -> index ] ; if ( cpi -> common . frame_type == KEY_FRAME ) target_rate = vp9_rc_clamp_iframe_target_size ( cpi , target_rate ) ; else target_rate = vp9_rc_clamp_pframe_target_size ( cpi , target_rate ) ; rc -> base_frame_target = target_rate ; { const int num_mbs = ( cpi -> oxcf . resize_mode != RESIZE_NONE ) ? cpi -> initial_mbs : cpi -> common . MBs ; twopass -> mb_av_energy = log ( ( ( this_frame . intra_error * 256.0 ) / num_mbs ) + 1.0 ) ; } <S2SV_ModEnd> subtract_stats ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6976\n\n```\nCWE-908 void * vips_malloc ( VipsObject * object , size_t size ) { void * buf ; <S2SV_StartBug> buf = g_malloc ( size ) ; <S2SV_EndBug> if ( object ) { g_signal_connect ( object , \"postclose\" , G_CALLBACK ( vips_malloc_cb ) , buf ) ; object -> local_memory += size ; } return ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; buf = g_malloc0 <S2SV_ModEnd> ( size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13308\n\n```\nCWE-119 static MagickBooleanType EncodeImage ( const ImageInfo * image_info , Image * image , const size_t data_size ) { # define MaxCode ( number_bits ) ( ( one << ( number_bits ) ) - 1 ) # define MaxHashTable 5003 # define MaxGIFBits 12UL # define MaxGIFTable ( 1UL << MaxGIFBits ) <S2SV_StartBug> # define GIFOutputCode ( code ) { if ( bits > 0 ) datum |= ( size_t ) ( code ) << bits ; else datum = ( size_t ) ( code ) ; bits += number_bits ; while ( bits >= 8 ) { packet [ length ++ ] = ( unsigned char ) ( datum & 0xff ) ; if ( length >= 254 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; length = 0 ; } datum >>= 8 ; bits -= 8 ; } if ( free_code > max_code ) { number_bits ++ ; if ( number_bits == MaxGIFBits ) max_code = MaxGIFTable ; else max_code = MaxCode ( number_bits ) ; } } <S2SV_EndBug> IndexPacket index ; short * hash_code , * hash_prefix , waiting_code ; size_t bits , clear_code , datum , end_of_information_code , free_code , length , max_code , next_pixel , number_bits , one , pass ; ssize_t displacement , offset , k , y ; unsigned char * packet , * hash_suffix ; assert ( image != ( Image * ) NULL ) ; one = 1 ; packet = ( unsigned char * ) AcquireQuantumMemory ( 256 , sizeof ( * packet ) ) ; hash_code = ( short * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_code ) ) ; hash_prefix = ( short * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_prefix ) ) ; hash_suffix = ( unsigned char * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_suffix ) ) ; if ( ( packet == ( unsigned char * ) NULL ) || ( hash_code == ( short * ) NULL ) || ( hash_prefix == ( short * ) NULL ) || ( hash_suffix == ( unsigned char * ) NULL ) ) { if ( packet != ( unsigned char * ) NULL ) packet = ( unsigned char * ) RelinquishMagickMemory ( packet ) ; if ( hash_code != ( short * ) NULL ) hash_code = ( short * ) RelinquishMagickMemory ( hash_code ) ; if ( hash_prefix != ( short * ) NULL ) hash_prefix = ( short * ) RelinquishMagickMemory ( hash_prefix ) ; if ( hash_suffix != ( unsigned char * ) NULL ) hash_suffix = ( unsigned char * ) RelinquishMagickMemory ( hash_suffix ) ; return ( MagickFalse ) ; } ( void ) memset ( packet , 0 , 256 * sizeof ( * packet ) ) ; ( void ) memset ( hash_code , 0 , MaxHashTable * sizeof ( * hash_code ) ) ; ( void ) memset ( hash_prefix , 0 , MaxHashTable * sizeof ( * hash_prefix ) ) ; ( void ) memset ( hash_suffix , 0 , MaxHashTable * sizeof ( * hash_suffix ) ) ; number_bits = data_size ; max_code = MaxCode ( number_bits ) ; clear_code = ( ( short ) one << ( data_size - 1 ) ) ; end_of_information_code = clear_code + 1 ; free_code = clear_code + 2 ; length = 0 ; datum = 0 ; bits = 0 ; GIFOutputCode ( clear_code ) ; offset = 0 ; pass = 0 ; waiting_code = 0 ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register const IndexPacket * magick_restrict indexes ; register const PixelPacket * magick_restrict p ; register ssize_t x ; p = GetVirtualPixels ( image , 0 , offset , image -> columns , 1 , & image -> exception ) ; if ( p == ( const PixelPacket * ) NULL ) break ; indexes = GetVirtualIndexQueue ( image ) ; if ( y == 0 ) { waiting_code = ( short ) ( * indexes ) ; p ++ ; } for ( x = ( ssize_t ) ( y == 0 ? 1 : 0 ) ; x < ( ssize_t ) image -> columns ; x ++ ) { <S2SV_StartBug> index = ( IndexPacket ) ( ( size_t ) GetPixelIndex ( indexes + x ) & 0xff ) ; <S2SV_EndBug> p ++ ; k = ( ssize_t ) ( ( ( size_t ) index << ( MaxGIFBits - 8 ) ) + waiting_code ) ; if ( k >= MaxHashTable ) k -= MaxHashTable ; <S2SV_StartBug> next_pixel = MagickFalse ; <S2SV_EndBug> displacement = 1 ; if ( hash_code [ k ] > 0 ) { if ( ( hash_prefix [ k ] == waiting_code ) && ( hash_suffix [ k ] == ( unsigned char ) index ) ) { waiting_code = hash_code [ k ] ; continue ; } if ( k != 0 ) displacement = MaxHashTable - k ; for ( ; ; ) { k -= displacement ; if ( k < 0 ) k += MaxHashTable ; if ( hash_code [ k ] == 0 ) break ; if ( ( hash_prefix [ k ] == waiting_code ) && ( hash_suffix [ k ] == ( unsigned char ) index ) ) { waiting_code = hash_code [ k ] ; next_pixel = MagickTrue ; break ; } } if ( next_pixel != MagickFalse ) continue ; } GIFOutputCode ( waiting_code ) ; if ( free_code < MaxGIFTable ) { hash_code [ k ] = ( short ) free_code ++ ; hash_prefix [ k ] = waiting_code ; hash_suffix [ k ] = ( unsigned char ) index ; } else { for ( k = 0 ; k < MaxHashTable ; k ++ ) hash_code [ k ] = 0 ; free_code = clear_code + 2 ; GIFOutputCode ( clear_code ) ; number_bits = data_size ; max_code = MaxCode ( number_bits ) ; } waiting_code = ( short ) index ; } if ( image_info -> interlace == NoInterlace ) offset ++ ; else switch ( pass ) { case 0 : default : { offset += 8 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 4 ; } break ; } case 1 : { offset += 8 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 2 ; } break ; } case 2 : { offset += 4 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 1 ; } break ; } case 3 : { offset += 2 ; break ; } } } GIFOutputCode ( waiting_code ) ; GIFOutputCode ( end_of_information_code ) ; if ( bits > 0 ) { packet [ length ++ ] = ( unsigned char ) ( datum & 0xff ) ; if ( length >= 254 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; length = 0 ; } } if ( length > 0 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; } hash_suffix = ( unsigned char * ) RelinquishMagickMemory ( hash_suffix ) ; hash_prefix = ( short * ) RelinquishMagickMemory ( hash_prefix ) ; hash_code = ( short * ) RelinquishMagickMemory ( hash_code ) ; packet = ( unsigned char * ) RelinquishMagickMemory ( packet ) ; return ( MagickTrue ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( code ) \\\\\\n{ <S2SV_ModEnd> if ( bits <S2SV_ModStart> ) ; } \\\\\\n} <S2SV_ModEnd> IndexPacket index ; <S2SV_ModStart> ++ ) { next_pixel = MagickFalse ; displacement = 1 ; <S2SV_ModStart> -= MaxHashTable ; if ( k < 0 ) continue <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0239\n\n```\nCWE-362 static int em_sysenter ( struct x86_emulate_ctxt * ctxt ) { const struct x86_emulate_ops * ops = ctxt -> ops ; struct desc_struct cs , ss ; u64 msr_data ; u16 cs_sel , ss_sel ; u64 efer = 0 ; ops -> get_msr ( ctxt , MSR_EFER , & efer ) ; if ( ctxt -> mode == X86EMUL_MODE_REAL ) return emulate_gp ( ctxt , 0 ) ; <S2SV_StartBug> if ( ( ctxt -> mode == X86EMUL_MODE_PROT32 ) && ( efer & EFER_LMA ) <S2SV_EndBug> && ! vendor_intel ( ctxt ) ) return emulate_ud ( ctxt ) ; if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) return X86EMUL_UNHANDLEABLE ; setup_syscalls_segments ( ctxt , & cs , & ss ) ; ops -> get_msr ( ctxt , MSR_IA32_SYSENTER_CS , & msr_data ) ; <S2SV_StartBug> switch ( ctxt -> mode ) { <S2SV_EndBug> case X86EMUL_MODE_PROT32 : if ( ( msr_data & 0xfffc ) == 0x0 ) return emulate_gp ( ctxt , 0 ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case X86EMUL_MODE_PROT64 : if ( msr_data == 0x0 ) return emulate_gp ( ctxt , 0 ) ; break ; default : break ; } ctxt -> eflags &= ~ ( EFLG_VM | EFLG_IF ) ; <S2SV_StartBug> cs_sel = ( u16 ) msr_data ; <S2SV_EndBug> cs_sel &= ~ SELECTOR_RPL_MASK ; ss_sel = cs_sel + 8 ; <S2SV_StartBug> ss_sel &= ~ SELECTOR_RPL_MASK ; <S2SV_EndBug> <S2SV_StartBug> if ( ctxt -> mode == X86EMUL_MODE_PROT64 || ( efer & EFER_LMA ) ) { <S2SV_EndBug> cs . d = 0 ; cs . l = 1 ; } ops -> set_segment ( ctxt , cs_sel , & cs , 0 , VCPU_SREG_CS ) ; ops -> set_segment ( ctxt , ss_sel , & ss , 0 , VCPU_SREG_SS ) ; ops -> get_msr ( ctxt , MSR_IA32_SYSENTER_EIP , & msr_data ) ; <S2SV_StartBug> ctxt -> _eip = msr_data ; <S2SV_EndBug> ops -> get_msr ( ctxt , MSR_IA32_SYSENTER_ESP , & msr_data ) ; <S2SV_StartBug> * reg_write ( ctxt , VCPU_REGS_RSP ) = msr_data ; <S2SV_EndBug> return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt -> mode != X86EMUL_MODE_PROT64 <S2SV_ModEnd> ) && ( <S2SV_ModStart> msr_data ) ; <S2SV_ModEnd> if ( ( <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> ctxt -> eflags <S2SV_ModStart> u16 ) msr_data & <S2SV_ModEnd> ~ SELECTOR_RPL_MASK ; <S2SV_ModStart> + 8 ; if <S2SV_ModEnd> ( efer & <S2SV_ModStart> efer & EFER_LMA <S2SV_ModEnd> ) { cs <S2SV_ModStart> -> _eip = ( efer & EFER_LMA ) ? msr_data : ( u32 ) <S2SV_ModStart> VCPU_REGS_RSP ) = ( efer & EFER_LMA ) ? msr_data : ( u32 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14680\n\n```\nCWE-20 static int chmd_read_headers ( struct mspack_system * sys , struct mspack_file * fh , struct mschmd_header * chm , int entire ) { unsigned int section , name_len , x , errors , num_chunks ; unsigned char buf [ 0x54 ] , * chunk = NULL , * name , * p , * end ; struct mschmd_file * fi , * link = NULL ; off_t offset , length ; int num_entries ; chm -> files = NULL ; chm -> sysfiles = NULL ; chm -> chunk_cache = NULL ; chm -> sec0 . base . chm = chm ; chm -> sec0 . base . id = 0 ; chm -> sec1 . base . chm = chm ; chm -> sec1 . base . id = 1 ; chm -> sec1 . content = NULL ; chm -> sec1 . control = NULL ; chm -> sec1 . spaninfo = NULL ; chm -> sec1 . rtable = NULL ; if ( sys -> read ( fh , & buf [ 0 ] , chmhead_SIZEOF ) != chmhead_SIZEOF ) { return MSPACK_ERR_READ ; } if ( EndGetI32 ( & buf [ chmhead_Signature ] ) != 0x46535449 ) { return MSPACK_ERR_SIGNATURE ; } if ( mspack_memcmp ( & buf [ chmhead_GUID1 ] , & guids [ 0 ] , 32L ) != 0 ) { D ( ( \"incorrect<S2SV_blank>GUIDs\" ) ) return MSPACK_ERR_SIGNATURE ; } chm -> version = EndGetI32 ( & buf [ chmhead_Version ] ) ; chm -> timestamp = EndGetM32 ( & buf [ chmhead_Timestamp ] ) ; chm -> language = EndGetI32 ( & buf [ chmhead_LanguageID ] ) ; if ( chm -> version > 3 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>CHM<S2SV_blank>version<S2SV_blank>><S2SV_blank>3\" ) ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhst3_SIZEOF ) != chmhst3_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & offset , & buf [ chmhst_OffsetHS0 ] , sys , fh ) || read_off64 ( & chm -> dir_offset , & buf [ chmhst_OffsetHS1 ] , sys , fh ) || read_off64 ( & chm -> sec0 . offset , & buf [ chmhst3_OffsetCS0 ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs0_SIZEOF ) != chmhs0_SIZEOF ) { return MSPACK_ERR_READ ; } if ( read_off64 ( & chm -> length , & buf [ chmhs0_FileLen ] , sys , fh ) ) { return MSPACK_ERR_DATAFORMAT ; } if ( sys -> seek ( fh , chm -> dir_offset , MSPACK_SYS_SEEK_START ) ) { return MSPACK_ERR_SEEK ; } if ( sys -> read ( fh , & buf [ 0 ] , chmhs1_SIZEOF ) != chmhs1_SIZEOF ) { return MSPACK_ERR_READ ; } chm -> dir_offset = sys -> tell ( fh ) ; chm -> chunk_size = EndGetI32 ( & buf [ chmhs1_ChunkSize ] ) ; chm -> density = EndGetI32 ( & buf [ chmhs1_Density ] ) ; chm -> depth = EndGetI32 ( & buf [ chmhs1_Depth ] ) ; chm -> index_root = EndGetI32 ( & buf [ chmhs1_IndexRoot ] ) ; chm -> num_chunks = EndGetI32 ( & buf [ chmhs1_NumChunks ] ) ; chm -> first_pmgl = EndGetI32 ( & buf [ chmhs1_FirstPMGL ] ) ; chm -> last_pmgl = EndGetI32 ( & buf [ chmhs1_LastPMGL ] ) ; if ( chm -> version < 3 ) { chm -> sec0 . offset = chm -> dir_offset + ( chm -> chunk_size * chm -> num_chunks ) ; } if ( chm -> sec0 . offset > chm -> length ) { D ( ( \"content<S2SV_blank>section<S2SV_blank>begins<S2SV_blank>after<S2SV_blank>file<S2SV_blank>has<S2SV_blank>ended\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> chunk_size < ( pmgl_Entries + 2 ) ) { D ( ( \"chunk<S2SV_blank>size<S2SV_blank>not<S2SV_blank>large<S2SV_blank>enough\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks == 0 ) { D ( ( \"no<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( chm -> num_chunks > 100000 ) { D ( ( \"more<S2SV_blank>than<S2SV_blank>100,000<S2SV_blank>chunks\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( off_t ) chm -> chunk_size * ( off_t ) chm -> num_chunks > chm -> length ) { D ( ( \"chunks<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>entire<S2SV_blank>file\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ( chm -> chunk_size & ( chm -> chunk_size - 1 ) ) != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>two\" ) ; } if ( chm -> first_pmgl != 0 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>first<S2SV_blank>PMGL<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>not<S2SV_blank>zero\" ) ; } if ( chm -> first_pmgl > chm -> last_pmgl ) { D ( ( \"first<S2SV_blank>pmgl<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>after<S2SV_blank>last<S2SV_blank>pmgl<S2SV_blank>chunk\" ) ) return MSPACK_ERR_DATAFORMAT ; } <S2SV_StartBug> if ( chm -> index_root != 0xFFFFFFFF && chm -> index_root > chm -> num_chunks ) { <S2SV_EndBug> D ( ( \"index_root<S2SV_blank>outside<S2SV_blank>valid<S2SV_blank>range\" ) ) return MSPACK_ERR_DATAFORMAT ; } if ( ! entire ) { return MSPACK_ERR_OK ; } if ( ( x = chm -> first_pmgl ) != 0 ) { if ( sys -> seek ( fh , ( off_t ) ( x * chm -> chunk_size ) , MSPACK_SYS_SEEK_CUR ) ) { return MSPACK_ERR_SEEK ; } } num_chunks = chm -> last_pmgl - x + 1 ; if ( ! ( chunk = ( unsigned char * ) sys -> alloc ( sys , ( size_t ) chm -> chunk_size ) ) ) { return MSPACK_ERR_NOMEMORY ; } errors = 0 ; while ( num_chunks -- ) { if ( sys -> read ( fh , chunk , ( int ) chm -> chunk_size ) != ( int ) chm -> chunk_size ) { sys -> free ( chunk ) ; return MSPACK_ERR_READ ; } if ( EndGetI32 ( & chunk [ pmgl_Signature ] ) != 0x4C474D50 ) continue ; if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) < 2 ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small\" ) ; } if ( EndGetI32 ( & chunk [ pmgl_QuickRefSize ] ) > ( ( int ) chm -> chunk_size - pmgl_Entries ) ) { sys -> message ( fh , \"WARNING;<S2SV_blank>PMGL<S2SV_blank>quickref<S2SV_blank>area<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" ) ; } p = & chunk [ pmgl_Entries ] ; end = & chunk [ chm -> chunk_size - 2 ] ; num_entries = EndGetI16 ( end ) ; while ( num_entries -- ) { READ_ENCINT ( name_len ) ; if ( name_len > ( unsigned int ) ( end - p ) ) goto chunk_end ; <S2SV_StartBug> name = p ; p += name_len ; <S2SV_EndBug> READ_ENCINT ( section ) ; READ_ENCINT ( offset ) ; READ_ENCINT ( length ) ; if ( ( offset == 0 ) && ( length == 0 ) ) { if ( ( name_len > 0 ) && ( name [ name_len - 1 ] == '/' ) ) continue ; } if ( section > 1 ) { sys -> message ( fh , \"invalid<S2SV_blank>section<S2SV_blank>number<S2SV_blank>\\'%u\\'.\" , section ) ; continue ; } if ( ! ( fi = ( struct mschmd_file * ) sys -> alloc ( sys , sizeof ( struct mschmd_file ) + name_len + 1 ) ) ) { sys -> free ( chunk ) ; return MSPACK_ERR_NOMEMORY ; } fi -> next = NULL ; fi -> filename = ( char * ) & fi [ 1 ] ; fi -> section = ( ( section == 0 ) ? ( struct mschmd_section * ) ( & chm -> sec0 ) : ( struct mschmd_section * ) ( & chm -> sec1 ) ) ; fi -> offset = offset ; fi -> length = length ; sys -> copy ( name , fi -> filename , ( size_t ) name_len ) ; fi -> filename [ name_len ] = '\\\\0' ; if ( name [ 0 ] == ':' && name [ 1 ] == ':' ) { if ( mspack_memcmp ( & name [ 2 ] , & content_name [ 2 ] , 31L ) == 0 ) { if ( mspack_memcmp ( & name [ 33 ] , & content_name [ 33 ] , 8L ) == 0 ) { chm -> sec1 . content = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & control_name [ 33 ] , 11L ) == 0 ) { chm -> sec1 . control = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & spaninfo_name [ 33 ] , 8L ) == 0 ) { chm -> sec1 . spaninfo = fi ; } else if ( mspack_memcmp ( & name [ 33 ] , & rtable_name [ 33 ] , 72L ) == 0 ) { chm -> sec1 . rtable = fi ; } } fi -> next = chm -> sysfiles ; chm -> sysfiles = fi ; } else { if ( link ) link -> next = fi ; else chm -> files = fi ; link = fi ; } } chunk_end : if ( num_entries >= 0 ) { D ( ( \"chunk<S2SV_blank>ended<S2SV_blank>before<S2SV_blank>all<S2SV_blank>entries<S2SV_blank>could<S2SV_blank>be<S2SV_blank>read\" ) ) errors ++ ; } } sys -> free ( chunk ) ; return ( errors > 0 ) ? MSPACK_ERR_DATAFORMAT : MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> chm -> index_root >= <S2SV_ModEnd> chm -> num_chunks <S2SV_ModStart> goto chunk_end ; if ( name_len == 0 ) goto chunk_end ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8812\n\n```\nCWE-000 static int iwch_l2t_send ( struct t3cdev * tdev , struct sk_buff * skb , struct l2t_entry * l2e ) { int error = 0 ; struct cxio_rdev * rdev ; rdev = ( struct cxio_rdev * ) tdev -> ulp ; if ( cxio_fatal_error ( rdev ) ) { kfree_skb ( skb ) ; return - EIO ; } error = l2t_send ( tdev , skb , l2e ) ; if ( error < 0 ) kfree_skb ( skb ) ; <S2SV_StartBug> return error ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return error < 0 ? error : 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void <S2SV_StartBug> l2tp_bearer_cap_print ( netdissect_options * ndo , const u_char * dat ) <S2SV_EndBug> { <S2SV_StartBug> const uint32_t * ptr = ( const uint32_t * ) dat ; <S2SV_EndBug> if ( EXTRACT_32BITS ( ptr ) & L2TP_BEARER_CAP_ANALOG_MASK ) { ND_PRINT ( ( ndo , \"A\" ) ) ; } if ( EXTRACT_32BITS ( ptr ) & L2TP_BEARER_CAP_DIGITAL_MASK ) { ND_PRINT ( ( ndo , \"D\" ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_char * dat , u_int length <S2SV_ModStart> ) dat ; if ( length < 4 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18221\n\n```\nCWE-20 static void __munlock_pagevec ( struct pagevec * pvec , struct zone * zone ) { int i ; int nr = pagevec_count ( pvec ) ; <S2SV_StartBug> int delta_munlocked ; <S2SV_EndBug> struct pagevec pvec_putback ; int pgrescued = 0 ; pagevec_init ( & pvec_putback , 0 ) ; spin_lock_irq ( zone_lru_lock ( zone ) ) ; for ( i = 0 ; i < nr ; i ++ ) { struct page * page = pvec -> pages [ i ] ; if ( TestClearPageMlocked ( page ) ) { if ( __munlock_isolate_lru_page ( page , false ) ) continue ; else __munlock_isolation_failed ( page ) ; <S2SV_StartBug> } <S2SV_EndBug> pagevec_add ( & pvec_putback , pvec -> pages [ i ] ) ; pvec -> pages [ i ] = NULL ; } <S2SV_StartBug> delta_munlocked = - nr + pagevec_count ( & pvec_putback ) ; <S2SV_EndBug> __mod_zone_page_state ( zone , NR_MLOCK , delta_munlocked ) ; spin_unlock_irq ( zone_lru_lock ( zone ) ) ; pagevec_release ( & pvec_putback ) ; for ( i = 0 ; i < nr ; i ++ ) { struct page * page = pvec -> pages [ i ] ; if ( page ) { lock_page ( page ) ; if ( ! __putback_lru_fast_prepare ( page , & pvec_putback , & pgrescued ) ) { get_page ( page ) ; __munlock_isolated_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; } } } if ( pagevec_count ( & pvec_putback ) ) __putback_lru_fast ( & pvec_putback , pgrescued ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int delta_munlocked = - nr <S2SV_ModStart> ) ; } else { delta_munlocked ++ ; } <S2SV_ModStart> NULL ; } <S2SV_ModEnd> __mod_zone_page_state ( zone\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static int propagate_one ( struct mount * m ) { struct mount * child ; int type ; if ( IS_MNT_NEW ( m ) ) return 0 ; if ( ! is_subdir ( mp -> m_dentry , m -> mnt . mnt_root ) ) return 0 ; if ( peers ( m , last_dest ) ) { type = CL_MAKE_SHARED ; } else { struct mount * n , * p ; bool done ; for ( n = m ; ; n = p ) { p = n -> mnt_master ; if ( p == dest_master || IS_MNT_MARKED ( p ) ) break ; } do { struct mount * parent = last_source -> mnt_parent ; if ( last_source == first_source ) break ; done = parent -> mnt_master == p ; if ( done && peers ( n , parent ) ) break ; last_source = last_source -> mnt_master ; } while ( ! done ) ; type = CL_SLAVE ; if ( IS_MNT_SHARED ( m ) ) type |= CL_MAKE_SHARED ; } if ( m -> mnt_ns -> user_ns != user_ns ) type |= CL_UNPRIVILEGED ; child = copy_tree ( last_source , last_source -> mnt . mnt_root , type ) ; if ( IS_ERR ( child ) ) return PTR_ERR ( child ) ; child -> mnt . mnt_flags &= ~ MNT_LOCKED ; mnt_set_mountpoint ( m , mp , child ) ; last_dest = m ; last_source = child ; if ( m -> mnt_master != dest_master ) { read_seqlock_excl ( & mount_lock ) ; SET_MNT_MARK ( m -> mnt_master ) ; read_sequnlock_excl ( & mount_lock ) ; } hlist_add_head ( & child -> mnt_hash , list ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return count_mounts ( m -> mnt_ns , child ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7534\n\n```\nCWE-125 static void ImportCbYCrYQuantum ( const Image * image , QuantumInfo * quantum_info , const MagickSizeType number_pixels , const unsigned char * magick_restrict p , Quantum * magick_restrict q , ExceptionInfo * exception ) { QuantumAny range ; register ssize_t x ; unsigned int pixel ; assert ( image != ( Image * ) NULL ) ; assert ( image -> signature == MagickCoreSignature ) ; switch ( quantum_info -> depth ) { case 10 : { Quantum cbcr [ 4 ] ; pixel = 0 ; if ( quantum_info -> pack == MagickFalse ) { register ssize_t i ; size_t quantum ; ssize_t n ; n = 0 ; quantum = 0 ; <S2SV_StartBug> for ( x = 0 ; x < ( ssize_t ) number_pixels ; x += 2 ) <S2SV_EndBug> { for ( i = 0 ; i < 4 ; i ++ ) { switch ( n % 3 ) { case 0 : { p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; quantum = ( size_t ) ( ScaleShortToQuantum ( ( unsigned short ) ( ( ( pixel >> 22 ) & 0x3ff ) << 6 ) ) ) ; break ; } case 1 : { quantum = ( size_t ) ( ScaleShortToQuantum ( ( unsigned short ) ( ( ( pixel >> 12 ) & 0x3ff ) << 6 ) ) ) ; break ; } case 2 : { quantum = ( size_t ) ( ScaleShortToQuantum ( ( unsigned short ) ( ( ( pixel >> 2 ) & 0x3ff ) << 6 ) ) ) ; break ; } } cbcr [ i ] = ( Quantum ) ( quantum ) ; n ++ ; } p += quantum_info -> pad ; SetPixelRed ( image , cbcr [ 1 ] , q ) ; SetPixelGreen ( image , cbcr [ 0 ] , q ) ; SetPixelBlue ( image , cbcr [ 2 ] , q ) ; q += GetPixelChannels ( image ) ; SetPixelRed ( image , cbcr [ 3 ] , q ) ; SetPixelGreen ( image , cbcr [ 0 ] , q ) ; SetPixelBlue ( image , cbcr [ 2 ] , q ) ; q += GetPixelChannels ( image ) ; } break ; } } default : { range = GetQuantumRange ( quantum_info -> depth ) ; for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelRed ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelGreen ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; x += 4 <S2SV_ModEnd> ) { for\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8104\n\n```\nCWE-399 static int db_interception ( struct vcpu_svm * svm ) { struct kvm_run * kvm_run = svm -> vcpu . run ; if ( ! ( svm -> vcpu . guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) && ! svm -> nmi_singlestep ) { kvm_queue_exception ( & svm -> vcpu , DB_VECTOR ) ; return 1 ; } if ( svm -> nmi_singlestep ) { svm -> nmi_singlestep = false ; if ( ! ( svm -> vcpu . guest_debug & KVM_GUESTDBG_SINGLESTEP ) ) svm -> vmcb -> save . rflags &= ~ ( X86_EFLAGS_TF | X86_EFLAGS_RF ) ; <S2SV_StartBug> update_db_bp_intercept ( & svm -> vcpu ) ; <S2SV_EndBug> } if ( svm -> vcpu . guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) { kvm_run -> exit_reason = KVM_EXIT_DEBUG ; kvm_run -> debug . arch . pc = svm -> vmcb -> save . cs . base + svm -> vmcb -> save . rip ; kvm_run -> debug . arch . exception = DB_VECTOR ; return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> X86_EFLAGS_RF ) ; <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8962\n\n```\nCWE-415 static int sg_common_write ( Sg_fd * sfp , Sg_request * srp , unsigned char * cmnd , int timeout , int blocking ) { int k , at_head ; Sg_device * sdp = sfp -> parentdp ; sg_io_hdr_t * hp = & srp -> header ; srp -> data . cmd_opcode = cmnd [ 0 ] ; hp -> status = 0 ; hp -> masked_status = 0 ; hp -> msg_status = 0 ; hp -> info = 0 ; hp -> host_status = 0 ; hp -> driver_status = 0 ; hp -> resid = 0 ; SCSI_LOG_TIMEOUT ( 4 , sg_printk ( KERN_INFO , sfp -> parentdp , \"sg_common_write:<S2SV_blank><S2SV_blank>scsi<S2SV_blank>opcode=0x%02x,<S2SV_blank>cmd_size=%d\\\\n\" , ( int ) cmnd [ 0 ] , ( int ) hp -> cmd_len ) ) ; k = sg_start_req ( srp , cmnd ) ; if ( k ) { SCSI_LOG_TIMEOUT ( 1 , sg_printk ( KERN_INFO , sfp -> parentdp , \"sg_common_write:<S2SV_blank>start_req<S2SV_blank>err=%d\\\\n\" , k ) ) ; sg_finish_rem_req ( srp ) ; return k ; } if ( atomic_read ( & sdp -> detaching ) ) { <S2SV_StartBug> if ( srp -> bio ) <S2SV_EndBug> <S2SV_StartBug> blk_end_request_all ( srp -> rq , - EIO ) ; <S2SV_EndBug> sg_finish_rem_req ( srp ) ; return - ENODEV ; } hp -> duration = jiffies_to_msecs ( jiffies ) ; if ( hp -> interface_id != '\\\\0' && ( SG_FLAG_Q_AT_TAIL & hp -> flags ) ) at_head = 0 ; else at_head = 1 ; srp -> rq -> timeout = timeout ; kref_get ( & sfp -> f_ref ) ; blk_execute_rq_nowait ( sdp -> device -> request_queue , sdp -> disk , srp -> rq , at_head , sg_rq_end_io ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> bio ) { if ( srp -> rq -> cmd != srp -> rq -> __cmd ) kfree ( srp -> rq -> cmd ) ; <S2SV_ModStart> EIO ) ; srp -> rq = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20169\n\n```\nCWE-400 static int hwahc_security_create ( struct hwahc * hwahc ) { int result ; struct wusbhc * wusbhc = & hwahc -> wusbhc ; struct usb_device * usb_dev = hwahc -> wa . usb_dev ; struct device * dev = & usb_dev -> dev ; struct usb_security_descriptor * secd ; struct usb_encryption_descriptor * etd ; void * itr , * top ; size_t itr_size , needed , bytes ; u8 index ; char buf [ 64 ] ; index = ( usb_dev -> actconfig - usb_dev -> config ) / sizeof ( usb_dev -> config [ 0 ] ) ; itr = usb_dev -> rawdescriptors [ index ] ; itr_size = le16_to_cpu ( usb_dev -> actconfig -> desc . wTotalLength ) ; top = itr + itr_size ; result = __usb_get_extra_descriptor ( usb_dev -> rawdescriptors [ index ] , le16_to_cpu ( usb_dev -> actconfig -> desc . wTotalLength ) , <S2SV_StartBug> USB_DT_SECURITY , ( void * * ) & secd ) ; <S2SV_EndBug> if ( result == - 1 ) { dev_warn ( dev , \"BUG?<S2SV_blank>WUSB<S2SV_blank>host<S2SV_blank>has<S2SV_blank>no<S2SV_blank>security<S2SV_blank>descriptors\\\\n\" ) ; return 0 ; } needed = sizeof ( * secd ) ; if ( top - ( void * ) secd < needed ) { dev_err ( dev , \"BUG?<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>to<S2SV_blank>process<S2SV_blank>security<S2SV_blank>\" \"descriptor<S2SV_blank>header<S2SV_blank>(%zu<S2SV_blank>bytes<S2SV_blank>left<S2SV_blank>vs<S2SV_blank>%zu<S2SV_blank>needed)\\\\n\" , top - ( void * ) secd , needed ) ; return 0 ; } needed = le16_to_cpu ( secd -> wTotalLength ) ; if ( top - ( void * ) secd < needed ) { dev_err ( dev , \"BUG?<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>to<S2SV_blank>process<S2SV_blank>security<S2SV_blank>\" \"descriptors<S2SV_blank>(%zu<S2SV_blank>bytes<S2SV_blank>left<S2SV_blank>vs<S2SV_blank>%zu<S2SV_blank>needed)\\\\n\" , top - ( void * ) secd , needed ) ; return 0 ; } itr = ( void * ) secd + sizeof ( * secd ) ; top = ( void * ) secd + le16_to_cpu ( secd -> wTotalLength ) ; index = 0 ; bytes = 0 ; while ( itr < top ) { etd = itr ; if ( top - itr < sizeof ( * etd ) ) { dev_err ( dev , \"BUG:<S2SV_blank>bad<S2SV_blank>host<S2SV_blank>security<S2SV_blank>descriptor;<S2SV_blank>\" \"not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>(%zu<S2SV_blank>vs<S2SV_blank>%zu<S2SV_blank>left)\\\\n\" , top - itr , sizeof ( * etd ) ) ; break ; } if ( etd -> bLength < sizeof ( * etd ) ) { dev_err ( dev , \"BUG:<S2SV_blank>bad<S2SV_blank>host<S2SV_blank>encryption<S2SV_blank>descriptor;<S2SV_blank>\" \"descriptor<S2SV_blank>is<S2SV_blank>too<S2SV_blank>short<S2SV_blank>\" \"(%zu<S2SV_blank>vs<S2SV_blank>%zu<S2SV_blank>needed)\\\\n\" , ( size_t ) etd -> bLength , sizeof ( * etd ) ) ; break ; } itr += etd -> bLength ; bytes += snprintf ( buf + bytes , sizeof ( buf ) - bytes , \"%s<S2SV_blank>(0x%02x)<S2SV_blank>\" , wusb_et_name ( etd -> bEncryptionType ) , etd -> bEncryptionValue ) ; wusbhc -> ccm1_etd = etd ; } dev_info ( dev , \"supported<S2SV_blank>encryption<S2SV_blank>types:<S2SV_blank>%s\\\\n\" , buf ) ; if ( wusbhc -> ccm1_etd == NULL ) { dev_err ( dev , \"E:<S2SV_blank>host<S2SV_blank>doesn\\'t<S2SV_blank>support<S2SV_blank>CCM-1<S2SV_blank>crypto\\\\n\" ) ; return 0 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) & secd , sizeof ( * secd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5940\n\n```\nCWE-269 static int store_asoundrc ( void ) { fs_build_mnt_dir ( ) ; char * src ; char * dest = RUN_ASOUNDRC_FILE ; FILE * fp = fopen ( dest , \"w\" ) ; if ( fp ) { fprintf ( fp , \"\\\\n\" ) ; SET_PERMS_STREAM ( fp , getuid ( ) , getgid ( ) , 0644 ) ; fclose ( fp ) ; } if ( asprintf ( & src , \"%s/.asoundrc\" , cfg . homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( src , & s ) == 0 ) { if ( is_link ( src ) ) { <S2SV_StartBug> fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>.asoundrc<S2SV_blank>file\\\\n\" ) ; <S2SV_EndBug> exit ( 1 ) ; } <S2SV_StartBug> pid_t child = fork ( ) ; <S2SV_EndBug> if ( child < 0 ) errExit ( \"fork\" ) ; if ( child == 0 ) { drop_privs ( 0 ) ; int rv = copy_file ( src , dest ) ; if ( rv ) <S2SV_StartBug> fprintf ( stderr , \"Warning:<S2SV_blank>cannot<S2SV_blank>transfer<S2SV_blank>.asoundrc<S2SV_blank>in<S2SV_blank>private<S2SV_blank>home<S2SV_blank>directory\\\\n\" ) ; <S2SV_EndBug> else { <S2SV_StartBug> fs_logger2 ( \"clone\" , dest ) ; <S2SV_EndBug> } _exit ( 0 ) ; } waitpid ( child , NULL , 0 ) ; if ( chown ( dest , getuid ( ) , getgid ( ) ) == - 1 ) errExit ( \"fchown\" ) ; if ( chmod ( dest , 0644 ) == - 1 ) errExit ( \"fchmod\" ) ; return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { char * rp = realpath ( src , NULL ) ; if ( ! rp ) { <S2SV_ModStart> ( stderr , \"Error:<S2SV_blank>Cannot<S2SV_blank>access<S2SV_blank>%s\\\\n\" , src <S2SV_ModEnd> ) ; exit <S2SV_ModStart> ) ; } if ( strncmp ( rp , cfg . homedir , strlen ( cfg . homedir ) ) != 0 ) { <S2SV_ModEnd> fprintf ( stderr <S2SV_ModStart> ( stderr , \"Error:<S2SV_blank>.asoundrc<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symbolic<S2SV_blank>link<S2SV_blank>pointing<S2SV_blank>to<S2SV_blank>a<S2SV_blank>file<S2SV_blank>outside<S2SV_blank>home<S2SV_blank>directory\\\\n\" ) ; exit ( 1 ) ; } free ( rp ) ; } copy_file_as_user ( src , dest , getuid ( ) , getgid ( ) , 0644 ) ; <S2SV_ModEnd> fs_logger2 ( \"clone\" <S2SV_ModStart> \"clone\" , dest <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0231\n\n```\nCWE-000 static inline int process_nested_data ( UNSERIALIZE_PARAMETER , HashTable * ht , long elements , int objprops ) { while ( elements -- > 0 ) { zval * key , * data , * * old_data ; ALLOC_INIT_ZVAL ( key ) ; if ( ! php_var_unserialize ( & key , p , max , NULL TSRMLS_CC ) ) { zval_dtor ( key ) ; FREE_ZVAL ( key ) ; return 0 ; } if ( Z_TYPE_P ( key ) != IS_LONG && Z_TYPE_P ( key ) != IS_STRING ) { zval_dtor ( key ) ; FREE_ZVAL ( key ) ; return 0 ; } ALLOC_INIT_ZVAL ( data ) ; if ( ! php_var_unserialize ( & data , p , max , var_hash TSRMLS_CC ) ) { zval_dtor ( key ) ; FREE_ZVAL ( key ) ; zval_dtor ( data ) ; FREE_ZVAL ( data ) ; return 0 ; } if ( ! objprops ) { switch ( Z_TYPE_P ( key ) ) { case IS_LONG : if ( zend_hash_index_find ( ht , Z_LVAL_P ( key ) , ( void * * ) & old_data ) == SUCCESS ) { var_push_dtor ( var_hash , old_data ) ; } zend_hash_index_update ( ht , Z_LVAL_P ( key ) , & data , sizeof ( data ) , NULL ) ; break ; case IS_STRING : if ( zend_symtable_find ( ht , Z_STRVAL_P ( key ) , Z_STRLEN_P ( key ) + 1 , ( void * * ) & old_data ) == SUCCESS ) { var_push_dtor ( var_hash , old_data ) ; } zend_symtable_update ( ht , Z_STRVAL_P ( key ) , Z_STRLEN_P ( key ) + 1 , & data , sizeof ( data ) , NULL ) ; break ; } } else { convert_to_string ( key ) ; <S2SV_StartBug> if ( zend_symtable_find ( ht , Z_STRVAL_P ( key ) , Z_STRLEN_P ( key ) + 1 , ( void * * ) & old_data ) == SUCCESS ) { <S2SV_EndBug> var_push_dtor ( var_hash , old_data ) ; } zend_hash_update ( ht , Z_STRVAL_P ( key ) , Z_STRLEN_P ( key ) + 1 , & data , sizeof data , NULL ) ; } zval_dtor ( key ) ; FREE_ZVAL ( key ) ; if ( elements && * ( * p - 1 ) != ';' && * ( * p - 1 ) != '}' ) { ( * p ) -- ; return 0 ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( zend_hash_find <S2SV_ModEnd> ( ht ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2694\n\n```\nCWE-264 static void on_response ( void * data , krb5_error_code retval , otp_response response ) { struct request_state rs = * ( struct request_state * ) data ; free ( data ) ; if ( retval == 0 && response != otp_response_success ) retval = KRB5_PREAUTH_FAILED ; <S2SV_StartBug> rs . respond ( rs . arg , retval , NULL , NULL , NULL ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = KRB5_PREAUTH_FAILED ; if ( retval == 0 ) rs . enc_tkt_reply -> flags |= TKT_FLG_PRE_AUTH ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3070\n\n```\nCWE-476 void migrate_page_copy ( struct page * newpage , struct page * page ) { int cpupid ; if ( PageHuge ( page ) || PageTransHuge ( page ) ) copy_huge_page ( newpage , page ) ; else copy_highpage ( newpage , page ) ; if ( PageError ( page ) ) SetPageError ( newpage ) ; if ( PageReferenced ( page ) ) SetPageReferenced ( newpage ) ; if ( PageUptodate ( page ) ) SetPageUptodate ( newpage ) ; if ( TestClearPageActive ( page ) ) { VM_BUG_ON_PAGE ( PageUnevictable ( page ) , page ) ; SetPageActive ( newpage ) ; } else if ( TestClearPageUnevictable ( page ) ) SetPageUnevictable ( newpage ) ; if ( PageChecked ( page ) ) SetPageChecked ( newpage ) ; if ( PageMappedToDisk ( page ) ) SetPageMappedToDisk ( newpage ) ; <S2SV_StartBug> if ( PageDirty ( page ) ) { <S2SV_EndBug> clear_page_dirty_for_io ( page ) ; if ( PageSwapBacked ( page ) ) SetPageDirty ( newpage ) ; <S2SV_StartBug> else <S2SV_EndBug> __set_page_dirty_nobuffers ( newpage ) ; } if ( page_is_young ( page ) ) set_page_young ( newpage ) ; if ( page_is_idle ( page ) ) set_page_idle ( newpage ) ; cpupid = page_cpupid_xchg_last ( page , - 1 ) ; page_cpupid_xchg_last ( newpage , cpupid ) ; ksm_migrate_page ( newpage , page ) ; if ( PageSwapCache ( page ) ) ClearPageSwapCache ( page ) ; ClearPagePrivate ( page ) ; set_page_private ( page , 0 ) ; if ( PageWriteback ( newpage ) ) end_page_writeback ( newpage ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> page ) ) <S2SV_ModEnd> SetPageDirty ( newpage <S2SV_ModStart> newpage ) ; <S2SV_ModEnd> if ( page_is_young\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6497\n\n```\nCWE-476 static MagickBooleanType ReadPSDChannel ( Image * image , const ImageInfo * image_info , const PSDInfo * psd_info , LayerInfo * layer_info , const size_t channel , const PSDCompressionType compression , ExceptionInfo * exception ) { Image * channel_image , * mask ; MagickOffsetType offset ; MagickBooleanType status ; channel_image = image ; mask = ( Image * ) NULL ; if ( layer_info -> channel_info [ channel ] . type < - 1 ) { const char * option ; option = GetImageOption ( image_info , \"psd:preserve-opacity-mask\" ) ; if ( ( layer_info -> channel_info [ channel ] . type != - 2 ) || ( layer_info -> mask . flags > 2 ) || ( ( layer_info -> mask . flags & 0x02 ) && ( IsStringTrue ( option ) == MagickFalse ) ) ) { SeekBlob ( image , layer_info -> channel_info [ channel ] . size - 2 , SEEK_CUR ) ; return ( MagickTrue ) ; } mask = CloneImage ( image , layer_info -> mask . page . width , layer_info -> mask . page . height , MagickFalse , exception ) ; <S2SV_StartBug> mask -> matte = MagickFalse ; <S2SV_EndBug> <S2SV_StartBug> channel_image = mask ; <S2SV_EndBug> } offset = TellBlob ( image ) ; status = MagickTrue ; switch ( compression ) { case Raw : status = ReadPSDChannelRaw ( channel_image , psd_info -> channels , layer_info -> channel_info [ channel ] . type , exception ) ; break ; case RLE : { MagickOffsetType * sizes ; sizes = ReadPSDRLESizes ( channel_image , psd_info , channel_image -> rows ) ; if ( sizes == ( MagickOffsetType * ) NULL ) ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; status = ReadPSDChannelRLE ( channel_image , psd_info , layer_info -> channel_info [ channel ] . type , sizes , exception ) ; sizes = ( MagickOffsetType * ) RelinquishMagickMemory ( sizes ) ; } break ; case ZipWithPrediction : case ZipWithoutPrediction : # ifdef MAGICKCORE_ZLIB_DELEGATE status = ReadPSDChannelZip ( channel_image , layer_info -> channels , layer_info -> channel_info [ channel ] . type , compression , layer_info -> channel_info [ channel ] . size - 2 , exception ) ; # else ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , MissingDelegateWarning , \"DelegateLibrarySupportNotBuiltIn\" , \"\\'%s\\'<S2SV_blank>(ZLIB)\" , image -> filename ) ; # endif break ; default : ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , TypeWarning , \"CompressionNotSupported\" , \"\\'%.20g\\'\" , ( double ) compression ) ; break ; } SeekBlob ( image , offset + layer_info -> channel_info [ channel ] . size - 2 , SEEK_SET ) ; if ( status == MagickFalse ) { if ( mask != ( Image * ) NULL ) DestroyImage ( mask ) ; ThrowBinaryException ( CoderError , \"UnableToDecompressImage\" , image -> filename ) ; } layer_info -> mask . image = mask ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exception ) ; if ( mask != ( Image * ) NULL ) { <S2SV_ModStart> = mask ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9708\n\n```\nCWE-000 static int closeVirtualHostDirective ( MaState * state , cchar * key , cchar * value ) { HttpEndpoint * endpoint ; char * address , * ip , * addresses , * tok ; int port ; if ( state -> enabled ) { if ( state -> endpoints && * state -> endpoints ) { <S2SV_StartBug> addresses = state -> endpoints ; <S2SV_EndBug> <S2SV_StartBug> while ( ( address = stok ( addresses , \"<S2SV_blank>\\\\t,\" , & tok ) ) != 0 ) { <S2SV_EndBug> addresses = 0 ; mprParseSocketAddress ( address , & ip , & port , NULL , - 1 ) ; if ( ( endpoint = httpLookupEndpoint ( ip , port ) ) == 0 ) { mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"Cannot<S2SV_blank>find<S2SV_blank>listen<S2SV_blank>directive<S2SV_blank>for<S2SV_blank>virtual<S2SV_blank>host<S2SV_blank>%s\" , address ) ; return MPR_ERR_BAD_SYNTAX ; } else { httpAddHostToEndpoint ( endpoint , state -> host ) ; } } } else { httpAddHostToEndpoints ( state -> host ) ; } } closeDirective ( state , key , value ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endpoints ) { for ( addresses = sclone ( <S2SV_ModEnd> state -> endpoints <S2SV_ModStart> state -> endpoints ) ; <S2SV_ModEnd> ( address = <S2SV_ModStart> ) != 0 ; addresses = tok ) { <S2SV_ModEnd> mprParseSocketAddress ( address\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2237\n\n```\nCWE-119 static int key_notify_policy_flush ( const struct km_event * c ) { struct sk_buff * skb_out ; struct sadb_msg * hdr ; skb_out = alloc_skb ( sizeof ( struct sadb_msg ) + 16 , GFP_ATOMIC ) ; if ( ! skb_out ) return - ENOBUFS ; hdr = ( struct sadb_msg * ) skb_put ( skb_out , sizeof ( struct sadb_msg ) ) ; hdr -> sadb_msg_type = SADB_X_SPDFLUSH ; hdr -> sadb_msg_seq = c -> seq ; hdr -> sadb_msg_pid = c -> portid ; hdr -> sadb_msg_version = PF_KEY_V2 ; hdr -> sadb_msg_errno = ( uint8_t ) 0 ; <S2SV_StartBug> hdr -> sadb_msg_len = ( sizeof ( struct sadb_msg ) / sizeof ( uint64_t ) ) ; <S2SV_EndBug> pfkey_broadcast ( skb_out , GFP_ATOMIC , BROADCAST_ALL , NULL , c -> net ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; hdr -> sadb_msg_satype = SADB_SATYPE_UNSPEC ; hdr ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19082\n\n```\nCWE-401 struct resource_pool * dce112_create_resource_pool ( uint8_t num_virtual_links , struct dc * dc ) { struct dce110_resource_pool * pool = kzalloc ( sizeof ( struct dce110_resource_pool ) , GFP_KERNEL ) ; if ( ! pool ) return NULL ; if ( construct ( num_virtual_links , dc , pool ) ) return & pool -> base ; <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> base ; kfree ( pool ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12459\n\n```\nCWE-20 int ff_mpeg4_decode_picture_header ( Mpeg4DecContext * ctx , GetBitContext * gb ) { MpegEncContext * s = & ctx -> m ; unsigned startcode , v ; int ret ; int vol = 0 ; <S2SV_StartBug> align_get_bits ( gb ) ; <S2SV_EndBug> if ( s -> codec_tag == AV_RL32 ( \"WV1F\" ) && show_bits ( gb , 24 ) == 0x575630 ) { skip_bits ( gb , 24 ) ; if ( get_bits ( gb , 8 ) == 0xF0 ) goto end ; } startcode = 0xff ; for ( ; ; ) { if ( get_bits_count ( gb ) >= gb -> size_in_bits ) { if ( gb -> size_in_bits == 8 && ( ctx -> divx_version >= 0 || ctx -> xvid_build >= 0 ) || s -> codec_tag == AV_RL32 ( \"QMP4\" ) ) { av_log ( s -> avctx , AV_LOG_VERBOSE , \"frame<S2SV_blank>skip<S2SV_blank>%d\\\\n\" , gb -> size_in_bits ) ; return FRAME_SKIPPED ; } else return AVERROR_INVALIDDATA ; } v = get_bits ( gb , 8 ) ; startcode = ( ( startcode << 8 ) | v ) & 0xffffffff ; if ( ( startcode & 0xFFFFFF00 ) != 0x100 ) continue ; if ( s -> avctx -> debug & FF_DEBUG_STARTCODE ) { av_log ( s -> avctx , AV_LOG_DEBUG , \"startcode:<S2SV_blank>%3X<S2SV_blank>\" , startcode ) ; if ( startcode <= 0x11F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode <= 0x12F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Layer<S2SV_blank>Start\" ) ; else if ( startcode <= 0x13F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode <= 0x15F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FGS<S2SV_blank>bp<S2SV_blank>start\" ) ; else if ( startcode <= 0x1AF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode == 0x1B0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>End\" ) ; else if ( startcode == 0x1B2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"User<S2SV_blank>Data\" ) ; else if ( startcode == 0x1B3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Group<S2SV_blank>of<S2SV_blank>VOP<S2SV_blank>start\" ) ; else if ( startcode == 0x1B4 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Session<S2SV_blank>Error\" ) ; else if ( startcode == 0x1B5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B6 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1B7 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"slice<S2SV_blank>start\" ) ; else if ( startcode == 0x1B8 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"extension<S2SV_blank>start\" ) ; else if ( startcode == 0x1B9 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"fgs<S2SV_blank>start\" ) ; else if ( startcode == 0x1BA ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BB ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BC ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BD ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BE ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Still<S2SV_blank>Texture<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Spatial<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>SNR<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Tile<S2SV_blank>start\" ) ; else if ( startcode == 0x1C2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Shape<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"stuffing<S2SV_blank>start\" ) ; else if ( startcode <= 0x1C5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"reserved\" ) ; else if ( startcode <= 0x1FF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"System<S2SV_blank>start\" ) ; av_log ( s -> avctx , AV_LOG_DEBUG , \"<S2SV_blank>at<S2SV_blank>%d\\\\n\" , get_bits_count ( gb ) ) ; } if ( startcode >= 0x120 && startcode <= 0x12F ) { if ( vol ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Ignoring<S2SV_blank>multiple<S2SV_blank>VOL<S2SV_blank>headers\\\\n\" ) ; continue ; } vol ++ ; if ( ( ret = decode_vol_header ( ctx , gb ) ) < 0 ) return ret ; } else if ( startcode == USER_DATA_STARTCODE ) { decode_user_data ( ctx , gb ) ; } else if ( startcode == GOP_STARTCODE ) { mpeg4_decode_gop_header ( s , gb ) ; } else if ( startcode == VOS_STARTCODE ) { mpeg4_decode_profile_level ( s , gb ) ; if ( s -> avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO && ( s -> avctx -> level > 0 && s -> avctx -> level < 9 ) ) { s -> studio_profile = 1 ; next_start_code_studio ( gb ) ; extension_and_user_data ( s , gb , 0 ) ; } } else if ( startcode == VISUAL_OBJ_STARTCODE ) { if ( s -> studio_profile ) { if ( ( ret = decode_studiovisualobject ( ctx , gb ) ) < 0 ) return ret ; } else mpeg4_decode_visual_object ( s , gb ) ; } else if ( startcode == VOP_STARTCODE ) { break ; } align_get_bits ( gb ) ; startcode = 0xff ; } end : if ( s -> avctx -> flags & AV_CODEC_FLAG_LOW_DELAY ) s -> low_delay = 1 ; s -> avctx -> has_b_frames = ! s -> low_delay ; if ( s -> studio_profile ) { if ( ! s -> avctx -> bits_per_raw_sample ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Missing<S2SV_blank>VOL<S2SV_blank>header\\\\n\" ) ; return AVERROR_INVALIDDATA ; } return decode_studio_vop_header ( ctx , gb ) ; } else return decode_vop_header ( ctx , gb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( gb ) ; if ( ! s -> studio_profile && s -> avctx -> bits_per_raw_sample != 8 ) s -> avctx -> bits_per_raw_sample = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1573\n\n```\nCWE-19 static int nft_flush_table ( struct nft_ctx * ctx ) { int err ; struct nft_chain * chain , * nc ; struct nft_set * set , * ns ; <S2SV_StartBug> list_for_each_entry_safe ( chain , nc , & ctx -> table -> chains , list ) { <S2SV_EndBug> ctx -> chain = chain ; err = nft_delrule_by_chain ( ctx ) ; if ( err < 0 ) goto out ; <S2SV_StartBug> err = nft_delchain ( ctx ) ; <S2SV_EndBug> if ( err < 0 ) goto out ; } <S2SV_StartBug> list_for_each_entry_safe ( set , ns , & ctx -> table -> sets , list ) { <S2SV_EndBug> <S2SV_StartBug> if ( set -> flags & NFT_SET_ANONYMOUS && <S2SV_EndBug> ! list_empty ( & set -> bindings ) ) continue ; err = nft_delset ( ctx , set ) ; if ( err < 0 ) goto out ; } err = nft_deltable ( ctx ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ns ; list_for_each_entry ( chain <S2SV_ModEnd> , & ctx <S2SV_ModStart> goto out ; } list_for_each_entry_safe ( set , ns , & ctx -> table -> sets , list ) { if ( set -> flags & NFT_SET_ANONYMOUS && ! list_empty ( & set -> bindings ) ) continue ; err = nft_delset ( ctx , set <S2SV_ModEnd> ) ; if <S2SV_ModStart> } list_for_each_entry_safe ( chain , nc <S2SV_ModEnd> , & ctx <S2SV_ModStart> -> table -> chains <S2SV_ModEnd> , list ) <S2SV_ModStart> list ) { ctx -> chain = chain ; err = nft_delchain ( ctx <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18200\n\n```\nCWE-20 int f2fs_trim_fs ( struct f2fs_sb_info * sbi , struct fstrim_range * range ) { __u64 start = F2FS_BYTES_TO_BLK ( range -> start ) ; __u64 end = start + F2FS_BYTES_TO_BLK ( range -> len ) - 1 ; unsigned int start_segno , end_segno ; struct cp_control cpc ; int err = 0 ; if ( start >= MAX_BLKADDR ( sbi ) || range -> len < sbi -> blocksize ) return - EINVAL ; cpc . trimmed = 0 ; if ( end <= MAIN_BLKADDR ( sbi ) ) goto out ; if ( is_sbi_flag_set ( sbi , SBI_NEED_FSCK ) ) { f2fs_msg ( sbi -> sb , KERN_WARNING , \"Found<S2SV_blank>FS<S2SV_blank>corruption,<S2SV_blank>run<S2SV_blank>fsck<S2SV_blank>to<S2SV_blank>fix.\" ) ; goto out ; } start_segno = ( start <= MAIN_BLKADDR ( sbi ) ) ? 0 : GET_SEGNO ( sbi , start ) ; end_segno = ( end >= MAX_BLKADDR ( sbi ) ) ? MAIN_SEGS ( sbi ) - 1 : GET_SEGNO ( sbi , end ) ; cpc . reason = CP_DISCARD ; cpc . trim_minlen = max_t ( __u64 , 1 , F2FS_BYTES_TO_BLK ( range -> minlen ) ) ; for ( ; start_segno <= end_segno ; start_segno = cpc . trim_end + 1 ) { cpc . trim_start = start_segno ; if ( sbi -> discard_blks == 0 ) break ; else if ( sbi -> discard_blks < BATCHED_TRIM_BLOCKS ( sbi ) ) cpc . trim_end = end_segno ; else cpc . trim_end = min_t ( unsigned int , rounddown ( start_segno + BATCHED_TRIM_SEGMENTS ( sbi ) , sbi -> segs_per_sec ) - 1 , end_segno ) ; mutex_lock ( & sbi -> gc_mutex ) ; err = write_checkpoint ( sbi , & cpc ) ; mutex_unlock ( & sbi -> gc_mutex ) ; if ( err ) break ; schedule ( ) ; } mark_discard_range_all ( sbi ) ; <S2SV_StartBug> f2fs_wait_discard_bios ( sbi ) ; <S2SV_EndBug> out : range -> len = F2FS_BLK_TO_BYTES ( cpc . trimmed ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> f2fs_wait_discard_bios ( sbi , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1479\n\n```\nCWE-399 static void inotify_free_group_priv ( struct fsnotify_group * group ) { idr_for_each ( & group -> inotify_data . idr , idr_callback , group ) ; idr_remove_all ( & group -> inotify_data . idr ) ; idr_destroy ( & group -> inotify_data . idr ) ; <S2SV_StartBug> free_uid ( group -> inotify_data . user ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> idr ) ; atomic_dec ( & group -> inotify_data . user -> inotify_devs ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13134\n\n```\nCWE-399 static Image * ReadBMPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { BMPInfo bmp_info ; Image * image ; MagickBooleanType status ; MagickOffsetType offset , profile_data , profile_size , start_position ; MemoryInfo * pixel_info ; Quantum index ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bit , bytes_per_line , length ; ssize_t count , y ; unsigned char magick [ 12 ] , * pixels ; unsigned int blue , green , offset_bits , red ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( & bmp_info , 0 , sizeof ( bmp_info ) ) ; bmp_info . ba_offset = 0 ; start_position = 0 ; offset_bits = 0 ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { PixelInfo quantum_bits ; PixelPacket shift ; start_position = TellBlob ( image ) - 2 ; bmp_info . ba_offset = 0 ; while ( LocaleNCompare ( ( char * ) magick , \"BA\" , 2 ) == 0 ) { bmp_info . file_size = ReadBlobLSBLong ( image ) ; bmp_info . ba_offset = ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) break ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Magick:<S2SV_blank>%c%c\" , magick [ 0 ] , magick [ 1 ] ) ; if ( ( count != 2 ) || ( ( LocaleNCompare ( ( char * ) magick , \"BM\" , 2 ) != 0 ) && ( LocaleNCompare ( ( char * ) magick , \"CI\" , 2 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bmp_info . file_size = ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; bmp_info . size = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>BMP<S2SV_blank>size:<S2SV_blank>%u\" , bmp_info . size ) ; profile_data = 0 ; profile_size = 0 ; if ( bmp_info . size == 12 ) { ( void ) CopyMagickString ( image -> magick , \"BMP2\" , MagickPathExtent ) ; bmp_info . width = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . height = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . x_pixels = 0 ; bmp_info . y_pixels = 0 ; bmp_info . number_colors = 0 ; bmp_info . compression = BI_RGB ; bmp_info . image_size = 0 ; bmp_info . alpha_mask = 0 ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>OS/2<S2SV_blank>Bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; } } else { if ( bmp_info . size < 40 ) ThrowReaderException ( CorruptImageError , \"NonOS2HeaderSizeError\" ) ; bmp_info . width = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . height = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . compression = ReadBlobLSBLong ( image ) ; bmp_info . image_size = ReadBlobLSBLong ( image ) ; bmp_info . x_pixels = ReadBlobLSBLong ( image ) ; bmp_info . y_pixels = ReadBlobLSBLong ( image ) ; bmp_info . number_colors = ReadBlobLSBLong ( image ) ; if ( ( MagickSizeType ) bmp_info . number_colors > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; bmp_info . colors_important = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>MS<S2SV_blank>Windows<S2SV_blank>bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Bits<S2SV_blank>per<S2SV_blank>pixel:<S2SV_blank>%.20g\" , ( double ) bmp_info . bits_per_pixel ) ; switch ( bmp_info . compression ) { case BI_RGB : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RGB\" ) ; break ; } case BI_RLE4 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE4\" ) ; break ; } case BI_RLE8 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE8\" ) ; break ; } case BI_BITFIELDS : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_BITFIELDS\" ) ; break ; } case BI_PNG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_PNG\" ) ; break ; } case BI_JPEG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_JPEG\" ) ; break ; } default : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>UNKNOWN<S2SV_blank>(%u)\" , bmp_info . compression ) ; } } ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>colors:<S2SV_blank>%u\" , bmp_info . number_colors ) ; } bmp_info . red_mask = ReadBlobLSBLong ( image ) ; bmp_info . green_mask = ReadBlobLSBLong ( image ) ; bmp_info . blue_mask = ReadBlobLSBLong ( image ) ; if ( bmp_info . size > 40 ) { double gamma ; bmp_info . alpha_mask = ReadBlobLSBLong ( image ) ; bmp_info . colorspace = ReadBlobLSBSignedLong ( image ) ; # define BMP_DENOM ( ( double ) 0x40000000 ) bmp_info . red_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; gamma = bmp_info . red_primary . x + bmp_info . red_primary . y + bmp_info . red_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . red_primary . x *= gamma ; bmp_info . red_primary . y *= gamma ; image -> chromaticity . red_primary . x = bmp_info . red_primary . x ; image -> chromaticity . red_primary . y = bmp_info . red_primary . y ; gamma = bmp_info . green_primary . x + bmp_info . green_primary . y + bmp_info . green_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . green_primary . x *= gamma ; bmp_info . green_primary . y *= gamma ; image -> chromaticity . green_primary . x = bmp_info . green_primary . x ; image -> chromaticity . green_primary . y = bmp_info . green_primary . y ; gamma = bmp_info . blue_primary . x + bmp_info . blue_primary . y + bmp_info . blue_primary . z ; gamma = PerceptibleReciprocal ( gamma ) ; bmp_info . blue_primary . x *= gamma ; bmp_info . blue_primary . y *= gamma ; image -> chromaticity . blue_primary . x = bmp_info . blue_primary . x ; image -> chromaticity . blue_primary . y = bmp_info . blue_primary . y ; bmp_info . gamma_scale . x = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . y = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . z = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; image -> gamma = ( bmp_info . gamma_scale . x + bmp_info . gamma_scale . y + bmp_info . gamma_scale . z ) / 3.0 ; } else ( void ) CopyMagickString ( image -> magick , \"BMP3\" , MagickPathExtent ) ; if ( bmp_info . size > 108 ) { size_t intent ; intent = ReadBlobLSBLong ( image ) ; switch ( ( int ) intent ) { case LCS_GM_BUSINESS : { image -> rendering_intent = SaturationIntent ; break ; } case LCS_GM_GRAPHICS : { image -> rendering_intent = RelativeIntent ; break ; } case LCS_GM_IMAGES : { image -> rendering_intent = PerceptualIntent ; break ; } case LCS_GM_ABS_COLORIMETRIC : { image -> rendering_intent = AbsoluteIntent ; break ; } } profile_data = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; profile_size = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; } } if ( ( MagickSizeType ) bmp_info . file_size > GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; else if ( ( MagickSizeType ) bmp_info . file_size < GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageWarning , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; if ( bmp_info . width <= 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . height == 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . planes != 1 ) ThrowReaderException ( CorruptImageError , \"StaticPlanesValueNotEqualToOne\" ) ; if ( ( bmp_info . bits_per_pixel != 1 ) && ( bmp_info . bits_per_pixel != 4 ) && ( bmp_info . bits_per_pixel != 8 ) && ( bmp_info . bits_per_pixel != 16 ) && ( bmp_info . bits_per_pixel != 24 ) && ( bmp_info . bits_per_pixel != 32 ) ) ThrowReaderException ( CorruptImageError , \"UnsupportedBitsPerPixel\" ) ; if ( bmp_info . bits_per_pixel < 16 && bmp_info . number_colors > ( 1U << bmp_info . bits_per_pixel ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedNumberOfColors\" ) ; if ( ( bmp_info . compression == 1 ) && ( bmp_info . bits_per_pixel != 8 ) ) ThrowReaderException ( CorruptImageError , \"UnsupportedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 2 ) && ( bmp_info . bits_per_pixel != 4 ) ) ThrowReaderException ( CorruptImageError , \"UnsupportedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 3 ) && ( bmp_info . bits_per_pixel < 16 ) ) ThrowReaderException ( CorruptImageError , \"UnsupportedBitsPerPixel\" ) ; switch ( bmp_info . compression ) { case BI_RGB : image -> compression = NoCompression ; break ; case BI_RLE8 : case BI_RLE4 : image -> compression = RLECompression ; break ; case BI_BITFIELDS : break ; case BI_JPEG : ThrowReaderException ( CoderError , \"JPEGCompressNotSupported\" ) ; case BI_PNG : ThrowReaderException ( CoderError , \"PNGCompressNotSupported\" ) ; default : ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } image -> columns = ( size_t ) MagickAbsoluteValue ( bmp_info . width ) ; image -> rows = ( size_t ) MagickAbsoluteValue ( bmp_info . height ) ; image -> depth = bmp_info . bits_per_pixel <= 8 ? bmp_info . bits_per_pixel : 8 ; image -> alpha_trait = ( ( bmp_info . alpha_mask != 0 ) && ( bmp_info . compression == BI_BITFIELDS ) ) ? BlendPixelTrait : UndefinedPixelTrait ; if ( bmp_info . bits_per_pixel < 16 ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = bmp_info . number_colors ; one = 1 ; if ( image -> colors == 0 ) image -> colors = one << bmp_info . bits_per_pixel ; } image -> resolution . x = ( double ) bmp_info . x_pixels / 100.0 ; image -> resolution . y = ( double ) bmp_info . y_pixels / 100.0 ; image -> units = PixelsPerCentimeterResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> storage_class == PseudoClass ) { unsigned char * bmp_colormap ; size_t packet_size ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>colormap<S2SV_blank>of<S2SV_blank>%.20g<S2SV_blank>colors\" , ( double ) image -> colors ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bmp_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) image -> colors , 4 * sizeof ( * bmp_colormap ) ) ; if ( bmp_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bmp_info . size == 12 ) || ( bmp_info . size == 64 ) ) packet_size = 3 ; else packet_size = 4 ; offset = SeekBlob ( image , start_position + 14 + bmp_info . size , SEEK_SET ) ; if ( offset < 0 ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } count = ReadBlob ( image , packet_size * image -> colors , bmp_colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) { bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = bmp_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ++ ) ; if ( packet_size == 4 ) p ++ ; } bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; } if ( bmp_info . offset_bits == offset_bits ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; offset_bits = bmp_info . offset_bits ; offset = SeekBlob ( image , start_position + bmp_info . offset_bits , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( bmp_info . compression == BI_RLE4 ) bmp_info . bits_per_pixel <<= 1 ; bytes_per_line = 4 * ( ( image -> columns * bmp_info . bits_per_pixel + 31 ) / 32 ) ; length = ( size_t ) bytes_per_line * image -> rows ; if ( ( MagickSizeType ) ( length / 256 ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ( bmp_info . compression == BI_RGB ) || ( bmp_info . compression == BI_BITFIELDS ) ) { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>pixels<S2SV_blank>(%.20g<S2SV_blank>bytes)\" , ( double ) length ) ; count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } } else { pixel_info = AcquireVirtualMemory ( image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; status = DecodeImage ( image , bmp_info . compression , pixels , image -> columns * image -> rows ) ; if ( status == MagickFalse ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToRunlengthDecodeImage\" ) ; } } if ( bmp_info . compression == BI_RGB ) { if ( ( image -> alpha_trait == UndefinedPixelTrait ) && ( bmp_info . size == 40 ) && ( bmp_info . bits_per_pixel == 32 ) ) { bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( * ( p + 3 ) != 0 ) { image -> alpha_trait = BlendPixelTrait ; y = - 1 ; break ; } p += 4 ; } } } bmp_info . alpha_mask = image -> alpha_trait != UndefinedPixelTrait ? 0xff000000U : 0U ; bmp_info . red_mask = 0x00ff0000U ; bmp_info . green_mask = 0x0000ff00U ; bmp_info . blue_mask = 0x000000ffU ; if ( bmp_info . bits_per_pixel == 16 ) { bmp_info . red_mask = 0x00007c00U ; bmp_info . green_mask = 0x000003e0U ; bmp_info . blue_mask = 0x0000001fU ; } } ( void ) memset ( & shift , 0 , sizeof ( shift ) ) ; ( void ) memset ( & quantum_bits , 0 , sizeof ( quantum_bits ) ) ; if ( ( bmp_info . bits_per_pixel == 16 ) || ( bmp_info . bits_per_pixel == 32 ) ) { register unsigned int sample ; if ( bmp_info . red_mask != 0 ) while ( ( ( bmp_info . red_mask << shift . red ) & 0x80000000UL ) == 0 ) { shift . red ++ ; if ( shift . red >= 32U ) break ; } if ( bmp_info . green_mask != 0 ) while ( ( ( bmp_info . green_mask << shift . green ) & 0x80000000UL ) == 0 ) { shift . green ++ ; if ( shift . green >= 32U ) break ; } if ( bmp_info . blue_mask != 0 ) while ( ( ( bmp_info . blue_mask << shift . blue ) & 0x80000000UL ) == 0 ) { shift . blue ++ ; if ( shift . blue >= 32U ) break ; } if ( bmp_info . alpha_mask != 0 ) while ( ( ( bmp_info . alpha_mask << shift . alpha ) & 0x80000000UL ) == 0 ) { shift . alpha ++ ; if ( shift . alpha >= 32U ) break ; } sample = shift . red ; while ( ( ( bmp_info . red_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . red = ( MagickRealType ) ( sample - shift . red ) ; sample = shift . green ; while ( ( ( bmp_info . green_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . green = ( MagickRealType ) ( sample - shift . green ) ; sample = shift . blue ; while ( ( ( bmp_info . blue_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . blue = ( MagickRealType ) ( sample - shift . blue ) ; sample = shift . alpha ; while ( ( ( bmp_info . alpha_mask << sample ) & 0x80000000UL ) != 0 ) { sample ++ ; if ( sample >= 32U ) break ; } quantum_bits . alpha = ( MagickRealType ) ( sample - shift . alpha ) ; } switch ( bmp_info . bits_per_pixel ) { case 1 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) { index = ( Quantum ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 4 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; ValidateColormapValue ( image , ( ssize_t ) ( * p & 0x0f ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) { ValidateColormapValue ( image , ( ssize_t ) ( ( * p >> 4 ) & 0xf ) , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; x ++ ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 8 : { if ( ( bmp_info . compression == BI_RLE8 ) || ( bmp_info . compression == BI_RLE4 ) ) bytes_per_line = image -> columns ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = ( ssize_t ) image -> columns ; x != 0 ; -- x ) { ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; break ; } case 16 : { unsigned int alpha , pixel ; if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 2 * ( image -> columns + image -> columns % 2 ) ; image -> storage_class = DirectClass ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( * p ++ ) << 8 ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 5 ) red |= ( ( red & 0xe000 ) >> 5 ) ; if ( quantum_bits . red <= 8 ) red |= ( ( red & 0xff00 ) >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 5 ) green |= ( ( green & 0xe000 ) >> 5 ) ; if ( quantum_bits . green == 6 ) green |= ( ( green & 0xc000 ) >> 6 ) ; if ( quantum_bits . green <= 8 ) green |= ( ( green & 0xff00 ) >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 5 ) blue |= ( ( blue & 0xe000 ) >> 5 ) ; if ( quantum_bits . blue <= 8 ) blue |= ( ( blue & 0xff00 ) >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha <= 8 ) alpha |= ( ( alpha & 0xff00 ) >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 24 : { bytes_per_line = 4 * ( ( image -> columns * 24 + 31 ) / 32 ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 32 : { if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { unsigned int alpha , pixel ; p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( unsigned int ) ( * p ++ ) ; pixel |= ( ( unsigned int ) * p ++ << 8 ) ; pixel |= ( ( unsigned int ) * p ++ << 16 ) ; pixel |= ( ( unsigned int ) * p ++ << 24 ) ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 8 ) red |= ( red >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 8 ) green |= ( green >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 8 ) blue |= ( blue >> 8 ) ; SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) red ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) green ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) blue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) { alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . alpha ) >> 16 ; if ( quantum_bits . alpha == 8 ) alpha |= ( alpha >> 8 ) ; SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) alpha ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } default : { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( y > 0 ) break ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( bmp_info . height < 0 ) { Image * flipped_image ; flipped_image = FlipImage ( image , exception ) ; if ( flipped_image != ( Image * ) NULL ) { DuplicateBlob ( flipped_image , image ) ; ReplaceImageInList ( & image , flipped_image ) ; image = flipped_image ; } } if ( ( bmp_info . colorspace == 0x4D424544L ) && ( profile_data > 0 ) && ( profile_size > 0 ) ) { StringInfo * profile ; unsigned char * datum ; offset = start_position + 14 + profile_data ; if ( ( offset < TellBlob ( image ) ) || ( SeekBlob ( image , offset , SEEK_SET ) != offset ) || ( GetBlobSize ( image ) < ( MagickSizeType ) ( offset + profile_size ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; profile = AcquireStringInfo ( ( size_t ) profile_size ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( CorruptImageError , \"MemoryAllocationFailed\" ) ; datum = GetStringInfoDatum ( profile ) ; if ( ReadBlob ( image , ( size_t ) profile_size , datum ) == ( ssize_t ) profile_size ) { MagickOffsetType profile_size_orig ; profile_size_orig = ( MagickOffsetType ) datum [ 0 ] << 24 ; profile_size_orig |= ( MagickOffsetType ) datum [ 1 ] << 16 ; profile_size_orig |= ( MagickOffsetType ) datum [ 2 ] << 8 ; profile_size_orig |= ( MagickOffsetType ) datum [ 3 ] ; if ( profile_size_orig < profile_size ) SetStringInfoLength ( profile , ( size_t ) profile_size_orig ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"Profile:<S2SV_blank>ICC,<S2SV_blank>%u<S2SV_blank>bytes\" , ( unsigned int ) profile_size_orig ) ; ( void ) SetImageProfile ( image , \"icc\" , profile , exception ) ; } profile = DestroyStringInfo ( profile ) ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; offset = ( MagickOffsetType ) bmp_info . ba_offset ; if ( offset != 0 ) if ( ( offset < TellBlob ( image ) ) || ( SeekBlob ( image , offset , SEEK_SET ) != offset ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; * magick = '\\\\0' ; count = ReadBlob ( image , 2 , magick ) ; if ( ( count == 2 ) && ( IsBMP ( magick , 2 ) != MagickFalse ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; <S2SV_StartBug> return ( ( Image * ) NULL ) ; <S2SV_EndBug> } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( IsBMP ( magick , 2 ) != MagickFalse ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = MagickFalse ; break <S2SV_ModEnd> ; } image\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8958\n\n```\nCWE-125 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , <S2SV_StartBug> length ; <S2SV_EndBug> ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } switch ( sun_info . maptype ) { case RMT_NONE : break ; case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( ( number_pixels * sun_info . depth ) > ( 8 * sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( sun_info . length , bytes_per_line * sun_info . width ) , sizeof ( * sun_data ) ) ; if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; <S2SV_StartBug> sun_pixels = sun_data ; <S2SV_EndBug> bytes_per_line = 0 ; if ( sun_info . type == RT_ENCODED ) { size_t height ; height = sun_info . height ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * <S2SV_EndBug> height ) ; sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; <S2SV_StartBug> } <S2SV_EndBug> p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { if ( bytes_per_line == 0 ) bytes_per_line = image -> columns ; length = image -> rows * ( image -> columns + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + bytes_per_line % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , extent , height , <S2SV_ModStart> \"UnableToReadImageData\" ) ; <S2SV_ModEnd> height = sun_info <S2SV_ModStart> \"MemoryAllocationFailed\" ) ; if ( sun_info . type == RT_ENCODED ) <S2SV_ModStart> sun_data ) ; <S2SV_ModEnd> p = sun_pixels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_dma_restart_bh ( void * opaque ) { SCSIDiskState * s = opaque ; SCSIRequest * req ; SCSIDiskReq * r ; qemu_bh_delete ( s -> bh ) ; s -> bh = NULL ; QTAILQ_FOREACH ( req , & s -> qdev . requests , next ) { r = DO_UPCAST ( SCSIDiskReq , req , req ) ; if ( r -> status & SCSI_REQ_STATUS_RETRY ) { int status = r -> status ; int ret ; r -> status &= ~ ( SCSI_REQ_STATUS_RETRY | SCSI_REQ_STATUS_RETRY_TYPE_MASK ) ; switch ( status & SCSI_REQ_STATUS_RETRY_TYPE_MASK ) { case SCSI_REQ_STATUS_RETRY_READ : scsi_read_data ( & r -> req ) ; break ; case SCSI_REQ_STATUS_RETRY_WRITE : scsi_write_data ( & r -> req ) ; break ; case SCSI_REQ_STATUS_RETRY_FLUSH : <S2SV_StartBug> ret = scsi_disk_emulate_command ( r , r -> iov . iov_base ) ; <S2SV_EndBug> if ( ret == 0 ) { scsi_req_complete ( & r -> req , GOOD ) ; } } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> scsi_disk_emulate_command ( r <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7542\n\n```\nCWE-190 int ip6_find_1stfragopt ( struct sk_buff * skb , u8 * * nexthdr ) { <S2SV_StartBug> u16 offset = sizeof ( struct ipv6hdr ) ; <S2SV_EndBug> unsigned int packet_len = skb_tail_pointer ( skb ) - skb_network_header ( skb ) ; int found_rhdr = 0 ; * nexthdr = & ipv6_hdr ( skb ) -> nexthdr ; while ( offset <= packet_len ) { struct ipv6_opt_hdr * exthdr ; <S2SV_StartBug> switch ( * * nexthdr ) { <S2SV_EndBug> case NEXTHDR_HOP : break ; case NEXTHDR_ROUTING : found_rhdr = 1 ; break ; case NEXTHDR_DEST : # if IS_ENABLED ( CONFIG_IPV6_MIP6 ) if ( ipv6_find_tlv ( skb , offset , IPV6_TLV_HAO ) >= 0 ) break ; # endif if ( found_rhdr ) return offset ; break ; default : return offset ; } if ( offset + sizeof ( struct ipv6_opt_hdr ) > packet_len ) return - EINVAL ; exthdr = ( struct ipv6_opt_hdr * ) ( skb_network_header ( skb ) + offset ) ; <S2SV_StartBug> offset += ipv6_optlen ( exthdr ) ; <S2SV_EndBug> * nexthdr = & exthdr -> nexthdr ; } return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nexthdr ) { unsigned int <S2SV_ModEnd> offset = sizeof <S2SV_ModStart> * exthdr ; unsigned int len ; <S2SV_ModStart> offset ) ; len = ipv6_optlen ( exthdr ) ; if ( len + offset >= IPV6_MAXPLEN ) return - EINVAL ; offset += len <S2SV_ModEnd> ; * nexthdr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13301\n\n```\nCWE-476 int ff_mpeg4_decode_picture_header ( Mpeg4DecContext * ctx , GetBitContext * gb ) { MpegEncContext * s = & ctx -> m ; unsigned startcode , v ; int ret ; int vol = 0 ; align_get_bits ( gb ) ; if ( ! s -> studio_profile && s -> avctx -> bits_per_raw_sample != 8 ) s -> avctx -> bits_per_raw_sample = 0 ; if ( s -> codec_tag == AV_RL32 ( \"WV1F\" ) && show_bits ( gb , 24 ) == 0x575630 ) { skip_bits ( gb , 24 ) ; if ( get_bits ( gb , 8 ) == 0xF0 ) goto end ; } startcode = 0xff ; for ( ; ; ) { if ( get_bits_count ( gb ) >= gb -> size_in_bits ) { if ( gb -> size_in_bits == 8 && ( ctx -> divx_version >= 0 || ctx -> xvid_build >= 0 ) || s -> codec_tag == AV_RL32 ( \"QMP4\" ) ) { av_log ( s -> avctx , AV_LOG_VERBOSE , \"frame<S2SV_blank>skip<S2SV_blank>%d\\\\n\" , gb -> size_in_bits ) ; return FRAME_SKIPPED ; } else return AVERROR_INVALIDDATA ; } v = get_bits ( gb , 8 ) ; startcode = ( ( startcode << 8 ) | v ) & 0xffffffff ; if ( ( startcode & 0xFFFFFF00 ) != 0x100 ) continue ; if ( s -> avctx -> debug & FF_DEBUG_STARTCODE ) { av_log ( s -> avctx , AV_LOG_DEBUG , \"startcode:<S2SV_blank>%3X<S2SV_blank>\" , startcode ) ; if ( startcode <= 0x11F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode <= 0x12F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Layer<S2SV_blank>Start\" ) ; else if ( startcode <= 0x13F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode <= 0x15F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FGS<S2SV_blank>bp<S2SV_blank>start\" ) ; else if ( startcode <= 0x1AF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode == 0x1B0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>End\" ) ; else if ( startcode == 0x1B2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"User<S2SV_blank>Data\" ) ; else if ( startcode == 0x1B3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Group<S2SV_blank>of<S2SV_blank>VOP<S2SV_blank>start\" ) ; else if ( startcode == 0x1B4 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Session<S2SV_blank>Error\" ) ; else if ( startcode == 0x1B5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B6 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1B7 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"slice<S2SV_blank>start\" ) ; else if ( startcode == 0x1B8 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"extension<S2SV_blank>start\" ) ; else if ( startcode == 0x1B9 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"fgs<S2SV_blank>start\" ) ; else if ( startcode == 0x1BA ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BB ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BC ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BD ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BE ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Still<S2SV_blank>Texture<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Spatial<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>SNR<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Tile<S2SV_blank>start\" ) ; else if ( startcode == 0x1C2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Shape<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"stuffing<S2SV_blank>start\" ) ; else if ( startcode <= 0x1C5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"reserved\" ) ; else if ( startcode <= 0x1FF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"System<S2SV_blank>start\" ) ; av_log ( s -> avctx , AV_LOG_DEBUG , \"<S2SV_blank>at<S2SV_blank>%d\\\\n\" , get_bits_count ( gb ) ) ; } if ( startcode >= 0x120 && startcode <= 0x12F ) { if ( vol ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Ignoring<S2SV_blank>multiple<S2SV_blank>VOL<S2SV_blank>headers\\\\n\" ) ; continue ; } vol ++ ; if ( ( ret = decode_vol_header ( ctx , gb ) ) < 0 ) return ret ; } else if ( startcode == USER_DATA_STARTCODE ) { decode_user_data ( ctx , gb ) ; } else if ( startcode == GOP_STARTCODE ) { mpeg4_decode_gop_header ( s , gb ) ; } else if ( startcode == VOS_STARTCODE ) { <S2SV_StartBug> mpeg4_decode_profile_level ( s , gb ) ; <S2SV_EndBug> if ( s -> avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO && <S2SV_StartBug> ( s -> avctx -> level > 0 && s -> avctx -> level < 9 ) ) { <S2SV_EndBug> s -> studio_profile = 1 ; next_start_code_studio ( gb ) ; extension_and_user_data ( s , gb , 0 ) ; <S2SV_StartBug> } <S2SV_EndBug> } else if ( startcode == VISUAL_OBJ_STARTCODE ) { if ( s -> studio_profile ) { if ( ( ret = decode_studiovisualobject ( ctx , gb ) ) < 0 ) return ret ; } else mpeg4_decode_visual_object ( s , gb ) ; } else if ( startcode == VOP_STARTCODE ) { break ; } align_get_bits ( gb ) ; startcode = 0xff ; } end : if ( s -> avctx -> flags & AV_CODEC_FLAG_LOW_DELAY ) s -> low_delay = 1 ; s -> avctx -> has_b_frames = ! s -> low_delay ; if ( s -> studio_profile ) { <S2SV_StartBug> if ( ! s -> avctx -> bits_per_raw_sample ) { <S2SV_EndBug> av_log ( s -> avctx , AV_LOG_ERROR , \"Missing<S2SV_blank>VOL<S2SV_blank>header\\\\n\" ) ; return AVERROR_INVALIDDATA ; } return decode_studio_vop_header ( ctx , gb ) ; } else return decode_vop_header ( ctx , gb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VOS_STARTCODE ) { int profile , level ; <S2SV_ModStart> s , gb , & profile , & level ) ; if ( <S2SV_ModEnd> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO <S2SV_ModStart> FF_PROFILE_MPEG4_SIMPLE_STUDIO && ( <S2SV_ModEnd> level > 0 <S2SV_ModStart> > 0 && <S2SV_ModEnd> level < 9 <S2SV_ModStart> ) ; } else if ( s -> studio_profile ) { avpriv_request_sample ( s -> avctx , \"Mixes<S2SV_blank>studio<S2SV_blank>and<S2SV_blank>non<S2SV_blank>studio<S2SV_blank>profile\\\\n\" ) ; return AVERROR_PATCHWELCOME ; } s -> avctx -> profile = profile ; s -> avctx -> level = level ; <S2SV_ModStart> studio_profile ) { av_assert0 ( s -> avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1246\n\n```\nCWE-119 int dbd_bind_ph ( SV * sth , imp_sth_t * imp_sth , SV * param , SV * value , IV sql_type , SV * attribs , int is_inout , IV maxlen ) { dTHX ; int rc ; int param_num = SvIV ( param ) ; int idx = param_num - 1 ; <S2SV_StartBug> char err_msg [ 64 ] ; <S2SV_EndBug> D_imp_xxh ( sth ) ; # if MYSQL_VERSION_ID >= SERVER_PREPARE_VERSION STRLEN slen ; char * buffer = NULL ; int buffer_is_null = 0 ; int buffer_length = slen ; unsigned int buffer_type = 0 ; IV tmp ; # endif D_imp_dbh_from_sth ; ASYNC_CHECK_RETURN ( sth , FALSE ) ; if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>Called:<S2SV_blank>dbd_bind_ph\\\\n\" ) ; attribs = attribs ; maxlen = maxlen ; if ( param_num <= 0 || param_num > DBIc_NUM_PARAMS ( imp_sth ) ) { do_error ( sth , JW_ERR_ILLEGAL_PARAM_NUM , \"Illegal<S2SV_blank>parameter<S2SV_blank>number\" , NULL ) ; return FALSE ; } if ( SvOK ( value ) && ( sql_type == SQL_NUMERIC || sql_type == SQL_DECIMAL || sql_type == SQL_INTEGER || sql_type == SQL_SMALLINT || sql_type == SQL_FLOAT || sql_type == SQL_REAL || sql_type == SQL_DOUBLE ) ) { if ( ! looks_like_number ( value ) ) { <S2SV_StartBug> sprintf ( err_msg , <S2SV_EndBug> \"Binding<S2SV_blank>non-numeric<S2SV_blank>field<S2SV_blank>%d,<S2SV_blank>value<S2SV_blank>%s<S2SV_blank>as<S2SV_blank>a<S2SV_blank>numeric!\" , <S2SV_StartBug> param_num , neatsvpv ( value , 0 ) ) ; <S2SV_EndBug> do_error ( sth , JW_ERR_ILLEGAL_PARAM_NUM , err_msg , NULL ) ; } } if ( is_inout ) { do_error ( sth , JW_ERR_NOT_IMPLEMENTED , \"Output<S2SV_blank>parameters<S2SV_blank>not<S2SV_blank>implemented\" , NULL ) ; return FALSE ; } rc = bind_param ( & imp_sth -> params [ idx ] , value , sql_type ) ; # if MYSQL_VERSION_ID >= SERVER_PREPARE_VERSION if ( imp_sth -> use_server_side_prepare ) { switch ( sql_type ) { case SQL_NUMERIC : case SQL_INTEGER : case SQL_SMALLINT : case SQL_BIGINT : case SQL_TINYINT : buffer_type = MYSQL_TYPE_LONG ; break ; case SQL_DOUBLE : case SQL_DECIMAL : case SQL_FLOAT : case SQL_REAL : buffer_type = MYSQL_TYPE_DOUBLE ; break ; case SQL_CHAR : case SQL_VARCHAR : case SQL_DATE : case SQL_TIME : case SQL_TIMESTAMP : case SQL_LONGVARCHAR : case SQL_BINARY : case SQL_VARBINARY : case SQL_LONGVARBINARY : buffer_type = MYSQL_TYPE_BLOB ; break ; default : buffer_type = MYSQL_TYPE_STRING ; } buffer_is_null = ! ( SvOK ( imp_sth -> params [ idx ] . value ) && imp_sth -> params [ idx ] . value ) ; if ( ! buffer_is_null ) { switch ( buffer_type ) { case MYSQL_TYPE_LONG : if ( ! SvIOK ( imp_sth -> params [ idx ] . value ) && DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"\\\\t\\\\tTRY<S2SV_blank>TO<S2SV_blank>BIND<S2SV_blank>AN<S2SV_blank>INT<S2SV_blank>NUMBER\\\\n\" ) ; buffer_length = sizeof imp_sth -> fbind [ idx ] . numeric_val . lval ; tmp = SvIV ( imp_sth -> params [ idx ] . value ) ; if ( tmp > INT32_MAX ) croak ( \"Could<S2SV_blank>not<S2SV_blank>bind<S2SV_blank>%ld:<S2SV_blank>Integer<S2SV_blank>too<S2SV_blank>large<S2SV_blank>for<S2SV_blank>MYSQL_TYPE_LONG\" , tmp ) ; imp_sth -> fbind [ idx ] . numeric_val . lval = tmp ; buffer = ( void * ) & ( imp_sth -> fbind [ idx ] . numeric_val . lval ) ; if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>SCALAR<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>->%\" PRId32 \"<-<S2SV_blank>IS<S2SV_blank>A<S2SV_blank>INT<S2SV_blank>NUMBER\\\\n\" , ( int ) sql_type , * ( int32_t * ) buffer ) ; break ; case MYSQL_TYPE_DOUBLE : if ( ! SvNOK ( imp_sth -> params [ idx ] . value ) && DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"\\\\t\\\\tTRY<S2SV_blank>TO<S2SV_blank>BIND<S2SV_blank>A<S2SV_blank>FLOAT<S2SV_blank>NUMBER\\\\n\" ) ; buffer_length = sizeof imp_sth -> fbind [ idx ] . numeric_val . dval ; imp_sth -> fbind [ idx ] . numeric_val . dval = SvNV ( imp_sth -> params [ idx ] . value ) ; buffer = ( char * ) & ( imp_sth -> fbind [ idx ] . numeric_val . dval ) ; if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>SCALAR<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>->%f<-<S2SV_blank>IS<S2SV_blank>A<S2SV_blank>FLOAT<S2SV_blank>NUMBER\\\\n\" , ( int ) sql_type , ( double ) ( * buffer ) ) ; break ; case MYSQL_TYPE_BLOB : if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>SCALAR<S2SV_blank>type<S2SV_blank>BLOB\\\\n\" ) ; break ; case MYSQL_TYPE_STRING : if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>SCALAR<S2SV_blank>type<S2SV_blank>STRING<S2SV_blank>%d,<S2SV_blank>buffertype=%d\\\\n\" , ( int ) sql_type , buffer_type ) ; break ; default : croak ( \"Bug<S2SV_blank>in<S2SV_blank>DBD::Mysql<S2SV_blank>file<S2SV_blank>dbdimp.c#dbd_bind_ph:<S2SV_blank>do<S2SV_blank>not<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>handle<S2SV_blank>unknown<S2SV_blank>buffer<S2SV_blank>type.\" ) ; } if ( buffer_type == MYSQL_TYPE_STRING || buffer_type == MYSQL_TYPE_BLOB ) { buffer = SvPV ( imp_sth -> params [ idx ] . value , slen ) ; buffer_length = slen ; if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"<S2SV_blank>SCALAR<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>->length<S2SV_blank>%d<-<S2SV_blank>IS<S2SV_blank>A<S2SV_blank>STRING<S2SV_blank>or<S2SV_blank>BLOB\\\\n\" , ( int ) sql_type , buffer_length ) ; } } else { buffer = NULL ; if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>SCALAR<S2SV_blank>NULL<S2SV_blank>VALUE:<S2SV_blank>buffer<S2SV_blank>type<S2SV_blank>is:<S2SV_blank>%d\\\\n\" , buffer_type ) ; } if ( imp_sth -> bind [ idx ] . buffer_type != buffer_type ) { if ( DBIc_TRACE_LEVEL ( imp_xxh ) >= 2 ) PerlIO_printf ( DBIc_LOGPIO ( imp_xxh ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>FORCE<S2SV_blank>REBIND:<S2SV_blank>buffer<S2SV_blank>type<S2SV_blank>changed<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d,<S2SV_blank>sql-type=%d\\\\n\" , ( int ) imp_sth -> bind [ idx ] . buffer_type , buffer_type , ( int ) sql_type ) ; imp_sth -> has_been_bound = 0 ; } if ( imp_sth -> has_been_bound == 0 ) { imp_sth -> bind [ idx ] . buffer_type = buffer_type ; imp_sth -> bind [ idx ] . buffer = buffer ; imp_sth -> bind [ idx ] . buffer_length = buffer_length ; } else { imp_sth -> stmt -> params [ idx ] . buffer = buffer ; imp_sth -> stmt -> params [ idx ] . buffer_length = buffer_length ; } imp_sth -> fbind [ idx ] . length = buffer_length ; imp_sth -> fbind [ idx ] . is_null = buffer_is_null ; } # endif return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; char * err_msg <S2SV_ModEnd> ; D_imp_xxh ( <S2SV_ModStart> ) ) { err_msg = SvPVX ( sv_2mortal ( newSVpvf ( <S2SV_ModEnd> \"Binding<S2SV_blank>non-numeric<S2SV_blank>field<S2SV_blank>%d,<S2SV_blank>value<S2SV_blank>%s<S2SV_blank>as<S2SV_blank>a<S2SV_blank>numeric!\" , param_num <S2SV_ModStart> value , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9992\n\n```\nCWE-119 static int decode_dds1 ( GetByteContext * gb , uint8_t * frame , int width , int height ) { const uint8_t * frame_start = frame ; const uint8_t * frame_end = frame + width * height ; int mask = 0x10000 , bitbuf = 0 ; int i , v , offset , count , segments ; segments = bytestream2_get_le16 ( gb ) ; while ( segments -- ) { if ( bytestream2_get_bytes_left ( gb ) < 2 ) return AVERROR_INVALIDDATA ; if ( mask == 0x10000 ) { bitbuf = bytestream2_get_le16u ( gb ) ; mask = 1 ; } if ( bitbuf & mask ) { v = bytestream2_get_le16 ( gb ) ; offset = ( v & 0x1FFF ) << 2 ; count = ( ( v >> 13 ) + 2 ) << 1 ; if ( frame - frame_start < offset || frame_end - frame < count * 2 + width ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < count ; i ++ ) { frame [ 0 ] = frame [ 1 ] = frame [ width ] = frame [ width + 1 ] = frame [ - offset ] ; frame += 2 ; } } else if ( bitbuf & ( mask << 1 ) ) { v = bytestream2_get_le16 ( gb ) * 2 ; if ( frame - frame_end < v ) return AVERROR_INVALIDDATA ; frame += v ; } else { <S2SV_StartBug> if ( frame_end - frame < width + 3 ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; frame [ 0 ] = frame [ 1 ] = frame [ width ] = frame [ width + 1 ] = bytestream2_get_byte ( gb ) ; frame += 2 ; frame [ 0 ] = frame [ 1 ] = frame [ width ] = frame [ width + 1 ] = bytestream2_get_byte ( gb ) ; frame += 2 ; } mask <<= 2 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < width + 4 <S2SV_ModEnd> ) return AVERROR_INVALIDDATA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int check_fragments_for_errors ( VP8D_COMP * pbi ) <S2SV_EndBug> { if ( ! pbi -> ec_active && pbi -> fragments . count <= 1 && pbi -> fragments . sizes [ 0 ] == 0 ) { VP8_COMMON * cm = & pbi -> common ; if ( cm -> fb_idx_ref_cnt [ cm -> lst_fb_idx ] > 1 ) { const int prev_idx = cm -> lst_fb_idx ; cm -> fb_idx_ref_cnt [ prev_idx ] -- ; cm -> lst_fb_idx = get_free_fb ( cm ) ; vp8_yv12_copy_frame ( & cm -> yv12_fb [ prev_idx ] , & cm -> yv12_fb [ cm -> lst_fb_idx ] ) ; } cm -> yv12_fb [ cm -> lst_fb_idx ] . corrupted = 1 ; cm -> show_frame = 0 ; return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_multiframe_quality_enhance ( VP8_COMMON * cm ) { YV12_BUFFER_CONFIG * show = cm -> frame_to_show ; YV12_BUFFER_CONFIG * dest = & cm -> post_proc_buffer ; FRAME_TYPE frame_type = cm -> frame_type ; const MODE_INFO * mode_info_context = cm -> show_frame_mi ; int mb_row ; int mb_col ; int totmap , map [ 4 ] ; int qcurr = cm -> base_qindex ; int qprev = cm -> postproc_state . last_base_qindex ; unsigned char * y_ptr , * u_ptr , * v_ptr ; unsigned char * yd_ptr , * ud_ptr , * vd_ptr ; y_ptr = show -> y_buffer ; u_ptr = show -> u_buffer ; v_ptr = show -> v_buffer ; yd_ptr = dest -> y_buffer ; ud_ptr = dest -> u_buffer ; vd_ptr = dest -> v_buffer ; for ( mb_row = 0 ; mb_row < cm -> mb_rows ; mb_row ++ ) { for ( mb_col = 0 ; mb_col < cm -> mb_cols ; mb_col ++ ) { if ( frame_type == INTER_FRAME ) totmap = qualify_inter_mb ( mode_info_context , map ) ; else totmap = ( frame_type == KEY_FRAME ? 4 : 0 ) ; if ( totmap ) { if ( totmap < 4 ) { int i , j ; for ( i = 0 ; i < 2 ; ++ i ) for ( j = 0 ; j < 2 ; ++ j ) { if ( map [ i * 2 + j ] ) { multiframe_quality_enhance_block ( 8 , qcurr , qprev , y_ptr + 8 * ( i * show -> y_stride + j ) , u_ptr + 4 * ( i * show -> uv_stride + j ) , v_ptr + 4 * ( i * show -> uv_stride + j ) , show -> y_stride , show -> uv_stride , yd_ptr + 8 * ( i * dest -> y_stride + j ) , ud_ptr + 4 * ( i * dest -> uv_stride + j ) , vd_ptr + 4 * ( i * dest -> uv_stride + j ) , dest -> y_stride , dest -> uv_stride ) ; } else { int k ; unsigned char * up = u_ptr + 4 * ( i * show -> uv_stride + j ) ; unsigned char * udp = ud_ptr + 4 * ( i * dest -> uv_stride + j ) ; unsigned char * vp = v_ptr + 4 * ( i * show -> uv_stride + j ) ; unsigned char * vdp = vd_ptr + 4 * ( i * dest -> uv_stride + j ) ; vp8_copy_mem8x8 ( y_ptr + 8 * ( i * show -> y_stride + j ) , show -> y_stride , yd_ptr + 8 * ( i * dest -> y_stride + j ) , dest -> y_stride ) ; for ( k = 0 ; k < 4 ; ++ k , up += show -> uv_stride , udp += dest -> uv_stride , vp += show -> uv_stride , vdp += dest -> uv_stride ) { <S2SV_StartBug> vpx_memcpy ( udp , up , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( vdp , vp , 4 ) ; <S2SV_EndBug> } } } } else { multiframe_quality_enhance_block ( 16 , qcurr , qprev , y_ptr , u_ptr , v_ptr , show -> y_stride , show -> uv_stride , yd_ptr , ud_ptr , vd_ptr , dest -> y_stride , dest -> uv_stride ) ; } } else { vp8_copy_mem16x16 ( y_ptr , show -> y_stride , yd_ptr , dest -> y_stride ) ; vp8_copy_mem8x8 ( u_ptr , show -> uv_stride , ud_ptr , dest -> uv_stride ) ; vp8_copy_mem8x8 ( v_ptr , show -> uv_stride , vd_ptr , dest -> uv_stride ) ; } y_ptr += 16 ; u_ptr += 8 ; v_ptr += 8 ; yd_ptr += 16 ; ud_ptr += 8 ; vd_ptr += 8 ; mode_info_context ++ ; } y_ptr += show -> y_stride * 16 - 16 * cm -> mb_cols ; u_ptr += show -> uv_stride * 8 - 8 * cm -> mb_cols ; v_ptr += show -> uv_stride * 8 - 8 * cm -> mb_cols ; yd_ptr += dest -> y_stride * 16 - 16 * cm -> mb_cols ; ud_ptr += dest -> uv_stride * 8 - 8 * cm -> mb_cols ; vd_ptr += dest -> uv_stride * 8 - 8 * cm -> mb_cols ; mode_info_context ++ ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uv_stride ) { memcpy <S2SV_ModEnd> ( udp , <S2SV_ModStart> 4 ) ; memcpy <S2SV_ModEnd> ( vdp ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void swap_frame_buffers ( VP9Decoder * pbi ) { int ref_index = 0 , mask ; VP9_COMMON * const cm = & pbi -> common ; <S2SV_StartBug> for ( mask = pbi -> refresh_frame_flags ; mask ; mask >>= 1 ) { <S2SV_EndBug> <S2SV_StartBug> if ( mask & 1 ) { <S2SV_EndBug> const int old_idx = cm -> ref_frame_map [ ref_index ] ; <S2SV_StartBug> ref_cnt_fb ( cm -> frame_bufs , & cm -> ref_frame_map [ ref_index ] , <S2SV_EndBug> <S2SV_StartBug> cm -> new_fb_idx ) ; <S2SV_EndBug> <S2SV_StartBug> if ( old_idx >= 0 && cm -> frame_bufs [ old_idx ] . ref_count == 0 ) <S2SV_EndBug> cm -> release_fb_cb ( cm -> cb_priv , & cm -> frame_bufs [ old_idx ] . raw_frame_buffer ) ; } ++ ref_index ; } cm -> frame_to_show = get_frame_new_buffer ( cm ) ; cm -> frame_bufs [ cm -> new_fb_idx ] . ref_count -- ; for ( ref_index = 0 ; ref_index < 3 ; ref_index ++ ) <S2SV_StartBug> cm -> frame_refs [ ref_index ] . idx = INT_MAX ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> common ; BufferPool * const pool = cm -> buffer_pool ; RefCntBuffer * const frame_bufs = cm -> buffer_pool -> frame_bufs ; lock_buffer_pool ( pool ) ; <S2SV_ModStart> 1 ) { const int old_idx = cm -> ref_frame_map [ ref_index ] ; decrease_ref_count ( old_idx , frame_bufs , pool ) ; if ( <S2SV_ModEnd> ( mask & <S2SV_ModStart> & 1 ) && old_idx >= 0 ) { decrease_ref_count ( old_idx , frame_bufs , pool ) ; } cm -> ref_frame_map [ ref_index ] = cm -> next_ref_frame_map [ ref_index ] ; ++ ref_index ; } for ( ; ref_index < REF_FRAMES && ! cm -> show_existing_frame ; ++ ref_index ) <S2SV_ModStart> ref_index ] ; decrease_ref_count ( old_idx , frame_bufs , pool ) ; cm -> ref_frame_map [ ref_index ] = cm -> next_ref_frame_map [ ref_index ] ; } unlock_buffer_pool ( pool ) ; pbi -> hold_ref_buf = 0 ; cm -> frame_to_show = get_frame_new_buffer ( cm ) ; if ( ! pbi -> frame_parallel_decode || ! cm -> show_frame ) { lock_buffer_pool ( pool ) ; -- frame_bufs [ <S2SV_ModEnd> cm -> new_fb_idx <S2SV_ModStart> cm -> new_fb_idx <S2SV_ModEnd> ] . ref_count <S2SV_ModStart> ] . ref_count ; unlock_buffer_pool ( pool ) ; } <S2SV_ModEnd> for ( ref_index <S2SV_ModStart> . idx = - 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-191(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10268\n\n```\nCWE-191 DECLAREcpFunc ( cpDecodedStrips ) { tsize_t stripsize = TIFFStripSize ( in ) ; tdata_t buf = _TIFFmalloc ( stripsize ) ; ( void ) imagewidth ; ( void ) spp ; if ( buf ) { tstrip_t s , ns = TIFFNumberOfStrips ( in ) ; uint32 row = 0 ; _TIFFmemset ( buf , 0 , stripsize ) ; <S2SV_StartBug> for ( s = 0 ; s < ns ; s ++ ) { <S2SV_EndBug> tsize_t cc = ( row + rowsperstrip > imagelength ) ? TIFFVStripSize ( in , imagelength - row ) : stripsize ; if ( TIFFReadEncodedStrip ( in , s , buf , cc ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>strip<S2SV_blank>%lu\" , ( unsigned long ) s ) ; goto bad ; } if ( TIFFWriteEncodedStrip ( out , s , buf , cc ) < 0 ) { TIFFError ( TIFFFileName ( out ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>write<S2SV_blank>strip<S2SV_blank>%lu\" , ( unsigned long ) s ) ; goto bad ; } row += rowsperstrip ; } _TIFFfree ( buf ) ; return 1 ; } else { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>buffer<S2SV_blank>of<S2SV_blank>size<S2SV_blank>%lu<S2SV_blank>\" \"to<S2SV_blank>read<S2SV_blank>strips\" , ( unsigned long ) stripsize ) ; return 0 ; } bad : _TIFFfree ( buf ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s < ns && row < imagelength\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 SQLWCHAR * _multi_string_alloc_and_expand ( LPCSTR in ) { SQLWCHAR * chr ; int len = 0 ; if ( ! in ) { <S2SV_StartBug> return in ; <S2SV_EndBug> } while ( in [ len ] != 0 || in [ len + 1 ] != 0 ) { len ++ ; } chr = malloc ( sizeof ( SQLWCHAR ) * ( len + 2 ) ) ; len = 0 ; while ( in [ len ] != 0 || in [ len + 1 ] != 0 ) { chr [ len ] = in [ len ] ; len ++ ; } chr [ len ++ ] = 0 ; chr [ len ++ ] = 0 ; return chr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return NULL <S2SV_ModEnd> ; } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14349\n\n```\nCWE-20 static int cmd_handle_untagged ( struct ImapData * idata ) { unsigned int count = 0 ; char * s = imap_next_word ( idata -> buf ) ; char * pn = imap_next_word ( s ) ; if ( ( idata -> state >= IMAP_SELECTED ) && isdigit ( ( unsigned char ) * s ) ) { pn = s ; s = imap_next_word ( s ) ; if ( mutt_str_strncasecmp ( \"EXISTS\" , s , 6 ) == 0 ) { mutt_debug ( 2 , \"Handling<S2SV_blank>EXISTS\\\\n\" ) ; if ( mutt_str_atoui ( pn , & count ) < 0 ) { mutt_debug ( 1 , \"Malformed<S2SV_blank>EXISTS:<S2SV_blank>\\'%s\\'\\\\n\" , pn ) ; } if ( ! ( idata -> reopen & IMAP_EXPUNGE_PENDING ) && count < idata -> max_msn ) { mutt_debug ( 1 , \"Message<S2SV_blank>count<S2SV_blank>is<S2SV_blank>out<S2SV_blank>of<S2SV_blank>sync\\\\n\" ) ; return 0 ; } else if ( count == idata -> max_msn ) mutt_debug ( 3 , \"superfluous<S2SV_blank>EXISTS<S2SV_blank>message.\\\\n\" ) ; else { if ( ! ( idata -> reopen & IMAP_EXPUNGE_PENDING ) ) { mutt_debug ( 2 , \"New<S2SV_blank>mail<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>%d<S2SV_blank>messages<S2SV_blank>total.\\\\n\" , idata -> mailbox , count ) ; idata -> reopen |= IMAP_NEWMAIL_PENDING ; } idata -> new_mail_count = count ; } } else if ( mutt_str_strncasecmp ( \"EXPUNGE\" , s , 7 ) == 0 ) cmd_parse_expunge ( idata , pn ) ; else if ( mutt_str_strncasecmp ( \"FETCH\" , s , 5 ) == 0 ) cmd_parse_fetch ( idata , pn ) ; } else if ( mutt_str_strncasecmp ( \"CAPABILITY\" , s , 10 ) == 0 ) cmd_parse_capability ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"OK<S2SV_blank>[CAPABILITY\" , s , 14 ) == 0 ) cmd_parse_capability ( idata , pn ) ; else if ( mutt_str_strncasecmp ( \"OK<S2SV_blank>[CAPABILITY\" , pn , 14 ) == 0 ) cmd_parse_capability ( idata , imap_next_word ( pn ) ) ; else if ( mutt_str_strncasecmp ( \"LIST\" , s , 4 ) == 0 ) cmd_parse_list ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"LSUB\" , s , 4 ) == 0 ) cmd_parse_lsub ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"MYRIGHTS\" , s , 8 ) == 0 ) cmd_parse_myrights ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"SEARCH\" , s , 6 ) == 0 ) cmd_parse_search ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"STATUS\" , s , 6 ) == 0 ) cmd_parse_status ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"ENABLED\" , s , 7 ) == 0 ) cmd_parse_enabled ( idata , s ) ; else if ( mutt_str_strncasecmp ( \"BYE\" , s , 3 ) == 0 ) { mutt_debug ( 2 , \"Handling<S2SV_blank>BYE\\\\n\" ) ; if ( idata -> status == IMAP_BYE ) return 0 ; s += 3 ; SKIPWS ( s ) ; mutt_error ( \"%s\" , s ) ; cmd_handle_fatal ( idata ) ; return - 1 ; } else if ( ImapServernoise && ( mutt_str_strncasecmp ( \"NO\" , s , 2 ) == 0 ) ) { mutt_debug ( 2 , \"Handling<S2SV_blank>untagged<S2SV_blank>NO\\\\n\" ) ; <S2SV_StartBug> mutt_error ( \"%s\" , s + 3 ) ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , s + 2 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10065\n\n```\nCWE-284 static void ImportGrayQuantum ( const Image * image , QuantumInfo * quantum_info , const MagickSizeType number_pixels , const unsigned char * magick_restrict p , Quantum * magick_restrict q , ExceptionInfo * exception ) { QuantumAny range ; register ssize_t x ; ssize_t bit ; unsigned int pixel ; assert ( image != ( Image * ) NULL ) ; assert ( image -> signature == MagickCoreSignature ) ; <S2SV_StartBug> switch ( quantum_info -> depth ) <S2SV_EndBug> { case 1 : { register Quantum black , white ; black = 0 ; white = QuantumRange ; if ( quantum_info -> min_is_white != MagickFalse ) { black = QuantumRange ; white = 0 ; } for ( x = 0 ; x < ( ( ssize_t ) number_pixels - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { SetPixelGray ( image , ( ( * p ) & ( 1 << ( 7 - bit ) ) ) == 0 ? black : white , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } for ( bit = 0 ; bit < ( ssize_t ) ( number_pixels % 8 ) ; bit ++ ) { SetPixelGray ( image , ( ( * p ) & ( 0x01 << ( 7 - bit ) ) ) == 0 ? black : white , q ) ; q += GetPixelChannels ( image ) ; } if ( bit != 0 ) p ++ ; break ; } case 4 : { register unsigned char pixel ; range = GetQuantumRange ( quantum_info -> depth ) ; for ( x = 0 ; x < ( ( ssize_t ) number_pixels - 1 ) ; x += 2 ) { pixel = ( unsigned char ) ( ( * p >> 4 ) & 0xf ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; q += GetPixelChannels ( image ) ; pixel = ( unsigned char ) ( ( * p ) & 0xf ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } for ( bit = 0 ; bit < ( ssize_t ) ( number_pixels % 2 ) ; bit ++ ) { pixel = ( unsigned char ) ( * p ++ >> 4 ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } case 8 : { unsigned char pixel ; if ( quantum_info -> min_is_white != MagickFalse ) { for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushCharPixel ( p , & pixel ) ; SetPixelGray ( image , ScaleCharToQuantum ( pixel ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushCharPixel ( p , & pixel ) ; SetPixelGray ( image , ScaleCharToQuantum ( pixel ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 10 : { range = GetQuantumRange ( quantum_info -> depth ) ; if ( quantum_info -> pack == MagickFalse ) { if ( image -> endian == LSBEndian ) { for ( x = 0 ; x < ( ssize_t ) ( number_pixels - 2 ) ; x += 3 ) { p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 22 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 12 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 2 ) & 0x3ff , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; if ( x ++ < ( ssize_t ) ( number_pixels - 1 ) ) { SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 22 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; } if ( x ++ < ( ssize_t ) number_pixels ) { SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 12 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) ( number_pixels - 2 ) ; x += 3 ) { p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 2 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 12 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 22 ) & 0x3ff , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; if ( x ++ < ( ssize_t ) ( number_pixels - 1 ) ) { SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 2 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; } if ( x ++ < ( ssize_t ) number_pixels ) { SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 12 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 12 : { range = GetQuantumRange ( quantum_info -> depth ) ; if ( quantum_info -> pack == MagickFalse ) { unsigned short pixel ; for ( x = 0 ; x < ( ssize_t ) ( number_pixels - 1 ) ; x += 2 ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( QuantumAny ) ( pixel >> 4 ) , range ) , q ) ; q += GetPixelChannels ( image ) ; p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( QuantumAny ) ( pixel >> 4 ) , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } for ( bit = 0 ; bit < ( ssize_t ) ( number_pixels % 2 ) ; bit ++ ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( QuantumAny ) ( pixel >> 4 ) , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } if ( bit != 0 ) p ++ ; break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 16 : { unsigned short pixel ; if ( quantum_info -> min_is_white != MagickFalse ) { for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleShortToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } if ( quantum_info -> format == FloatingPointQuantumFormat ) { for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ClampToQuantum ( QuantumRange * HalfToSinglePrecision ( pixel ) ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleShortToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 32 : { unsigned int pixel ; if ( quantum_info -> format == FloatingPointQuantumFormat ) { float pixel ; for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushFloatPixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ClampToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleLongToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 64 : { if ( quantum_info -> format == FloatingPointQuantumFormat ) { double pixel ; for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushDoublePixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ClampToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } } default : { range = GetQuantumRange ( quantum_info -> depth ) ; for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MagickCoreSignature ) ; pixel = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void write_modes_sb ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_StartBug> vp9_writer * w , TOKENEXTRA * * tok , TOKENEXTRA * tok_end , <S2SV_EndBug> int mi_row , int mi_col , BLOCK_SIZE bsize ) { <S2SV_StartBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_EndBug> <S2SV_StartBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> <S2SV_StartBug> const int bsl = b_width_log2 ( bsize ) ; <S2SV_EndBug> const int bs = ( 1 << bsl ) / 4 ; PARTITION_TYPE partition ; BLOCK_SIZE subsize ; <S2SV_StartBug> MODE_INFO * m = cm -> mi_grid_visible [ mi_row * cm -> mi_stride + mi_col ] ; <S2SV_EndBug> if ( mi_row >= cm -> mi_rows || mi_col >= cm -> mi_cols ) return ; partition = partition_lookup [ bsl ] [ m -> mbmi . sb_type ] ; write_partition ( cm , xd , bs , mi_row , mi_col , partition , bsize , w ) ; subsize = get_subsize ( bsize , partition ) ; if ( subsize < BLOCK_8X8 ) { write_modes_b ( cpi , tile , w , tok , tok_end , mi_row , mi_col ) ; } else { switch ( partition ) { case PARTITION_NONE : write_modes_b ( cpi , tile , w , tok , tok_end , mi_row , mi_col ) ; break ; case PARTITION_HORZ : write_modes_b ( cpi , tile , w , tok , tok_end , mi_row , mi_col ) ; if ( mi_row + bs < cm -> mi_rows ) write_modes_b ( cpi , tile , w , tok , tok_end , mi_row + bs , mi_col ) ; break ; case PARTITION_VERT : write_modes_b ( cpi , tile , w , tok , tok_end , mi_row , mi_col ) ; if ( mi_col + bs < cm -> mi_cols ) write_modes_b ( cpi , tile , w , tok , tok_end , mi_row , mi_col + bs ) ; break ; case PARTITION_SPLIT : write_modes_sb ( cpi , tile , w , tok , tok_end , mi_row , mi_col , subsize ) ; write_modes_sb ( cpi , tile , w , tok , tok_end , mi_row , mi_col + bs , subsize ) ; write_modes_sb ( cpi , tile , w , tok , tok_end , mi_row + bs , mi_col , subsize ) ; write_modes_sb ( cpi , tile , w , tok , tok_end , mi_row + bs , mi_col + bs , subsize ) ; break ; default : assert ( 0 ) ; } } if ( bsize >= BLOCK_8X8 && ( bsize == BLOCK_8X8 || partition != PARTITION_SPLIT ) ) update_partition_context ( xd , mi_row , mi_col , subsize , bsize ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const tile , vpx_writer * w , <S2SV_ModEnd> TOKENEXTRA * * <S2SV_ModStart> * tok , const TOKENEXTRA * const <S2SV_ModEnd> tok_end , int <S2SV_ModStart> bsize ) { const <S2SV_ModStart> & cpi -> td . <S2SV_ModStart> int bsl = b_width_log2_lookup [ bsize ] <S2SV_ModEnd> ; const int <S2SV_ModStart> BLOCK_SIZE subsize ; const MODE_INFO * m = NULL ; if ( mi_row >= cm -> mi_rows || mi_col >= cm -> mi_cols ) return ; <S2SV_ModEnd> m = cm <S2SV_ModStart> + mi_col ] <S2SV_ModEnd> ; partition =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9114\n\n```\nCWE-77 static void print_value ( int output , int num , const char * devname , const char * value , const char * name , size_t valsz ) { if ( output & OUTPUT_VALUE_ONLY ) { fputs ( value , stdout ) ; fputc ( '\\\\n' , stdout ) ; } else if ( output & OUTPUT_UDEV_LIST ) { print_udev_format ( name , value ) ; } else if ( output & OUTPUT_EXPORT_LIST ) { if ( num == 1 && devname ) printf ( \"DEVNAME=%s\\\\n\" , devname ) ; fputs ( name , stdout ) ; fputs ( \"=\" , stdout ) ; <S2SV_StartBug> safe_print ( value , valsz , NULL ) ; <S2SV_EndBug> fputs ( \"\\\\n\" , stdout ) ; } else { if ( num == 1 && devname ) printf ( \"%s:\" , devname ) ; fputs ( \"<S2SV_blank>\" , stdout ) ; fputs ( name , stdout ) ; fputs ( \"=\\\\\"\" , stdout ) ; <S2SV_StartBug> safe_print ( value , valsz , \"\\\\\"\" ) ; <S2SV_EndBug> fputs ( \"\\\\\"\" , stdout ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , valsz , \"<S2SV_blank>\\\\\\\\\\\\\"\\'$`<>\" <S2SV_ModEnd> ) ; fputs <S2SV_ModStart> , valsz , \"\\\\\"\\\\\\\\\" ) ; fputs ( \"\\\\\"\" <S2SV_ModEnd> , stdout )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11339\n\n```\nCWE-125 static int mpeg4_decode_studio_block ( MpegEncContext * s , int32_t block [ 64 ] , int n ) { Mpeg4DecContext * ctx = s -> avctx -> priv_data ; int cc , dct_dc_size , dct_diff , code , j , idx = 1 , group = 0 , run = 0 , additional_code_len , sign , mismatch ; VLC * cur_vlc = & ctx -> studio_intra_tab [ 0 ] ; uint8_t * const scantable = s -> intra_scantable . permutated ; const uint16_t * quant_matrix ; uint32_t flc ; const int min = - 1 * ( 1 << ( s -> avctx -> bits_per_raw_sample + 6 ) ) ; const int max = ( ( 1 << ( s -> avctx -> bits_per_raw_sample + 6 ) ) - 1 ) ; mismatch = 1 ; memset ( block , 0 , 64 * sizeof ( int32_t ) ) ; if ( n < 4 ) { cc = 0 ; dct_dc_size = get_vlc2 ( & s -> gb , ctx -> studio_luma_dc . table , STUDIO_INTRA_BITS , 2 ) ; quant_matrix = s -> intra_matrix ; } else { cc = ( n & 1 ) + 1 ; if ( ctx -> rgb ) dct_dc_size = get_vlc2 ( & s -> gb , ctx -> studio_luma_dc . table , STUDIO_INTRA_BITS , 2 ) ; else dct_dc_size = get_vlc2 ( & s -> gb , ctx -> studio_chroma_dc . table , STUDIO_INTRA_BITS , 2 ) ; quant_matrix = s -> chroma_intra_matrix ; } if ( dct_dc_size < 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"illegal<S2SV_blank>dct_dc_size<S2SV_blank>vlc\\\\n\" ) ; return AVERROR_INVALIDDATA ; } else if ( dct_dc_size == 0 ) { dct_diff = 0 ; } else { dct_diff = get_xbits ( & s -> gb , dct_dc_size ) ; if ( dct_dc_size > 8 ) { if ( ! check_marker ( s -> avctx , & s -> gb , \"dct_dc_size<S2SV_blank>><S2SV_blank>8\" ) ) return AVERROR_INVALIDDATA ; } } s -> last_dc [ cc ] += dct_diff ; if ( s -> mpeg_quant ) block [ 0 ] = s -> last_dc [ cc ] * ( 8 >> s -> intra_dc_precision ) ; else block [ 0 ] = s -> last_dc [ cc ] * ( 8 >> s -> intra_dc_precision ) * ( 8 >> s -> dct_precision ) ; block [ 0 ] = av_clip ( block [ 0 ] , min , max ) ; mismatch ^= block [ 0 ] ; while ( 1 ) { group = get_vlc2 ( & s -> gb , cur_vlc -> table , STUDIO_INTRA_BITS , 2 ) ; if ( group < 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"illegal<S2SV_blank>ac<S2SV_blank>coefficient<S2SV_blank>group<S2SV_blank>vlc\\\\n\" ) ; return AVERROR_INVALIDDATA ; } additional_code_len = ac_state_tab [ group ] [ 0 ] ; cur_vlc = & ctx -> studio_intra_tab [ ac_state_tab [ group ] [ 1 ] ] ; if ( group == 0 ) { break ; } else if ( group >= 1 && group <= 6 ) { run = 1 << additional_code_len ; if ( additional_code_len ) run += get_bits ( & s -> gb , additional_code_len ) ; idx += run ; continue ; } else if ( group >= 7 && group <= 12 ) { code = get_bits ( & s -> gb , additional_code_len ) ; sign = code & 1 ; code >>= 1 ; run = ( 1 << ( additional_code_len - 1 ) ) + code ; idx += run ; <S2SV_StartBug> j = scantable [ idx ++ ] ; <S2SV_EndBug> block [ j ] = sign ? 1 : - 1 ; } else if ( group >= 13 && group <= 20 ) { <S2SV_StartBug> j = scantable [ idx ++ ] ; <S2SV_EndBug> block [ j ] = get_xbits ( & s -> gb , additional_code_len ) ; <S2SV_StartBug> } else if ( group == 21 ) { <S2SV_EndBug> j = scantable [ idx ++ ] ; additional_code_len = s -> avctx -> bits_per_raw_sample + s -> dct_precision + 4 ; flc = get_bits ( & s -> gb , additional_code_len ) ; if ( flc >> ( additional_code_len - 1 ) ) block [ j ] = - 1 * ( ( flc ^ ( ( 1 << additional_code_len ) - 1 ) ) + 1 ) ; else block [ j ] = flc ; } block [ j ] = ( ( 8 * 2 * block [ j ] * quant_matrix [ j ] * s -> qscale ) >> s -> dct_precision ) / 32 ; block [ j ] = av_clip ( block [ j ] , min , max ) ; mismatch ^= block [ j ] ; } block [ 63 ] ^= mismatch & 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += run ; if ( idx > 63 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> 20 ) { if ( idx > 63 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> 21 ) { if ( idx > 63 ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8070\n\n```\nCWE-119 static int catc_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct device * dev = & intf -> dev ; struct usb_device * usbdev = interface_to_usbdev ( intf ) ; struct net_device * netdev ; struct catc * catc ; u8 broadcast [ ETH_ALEN ] ; <S2SV_StartBug> int i , pktsz , ret ; <S2SV_EndBug> if ( usb_set_interface ( usbdev , intf -> altsetting -> desc . bInterfaceNumber , 1 ) ) { dev_err ( dev , \"Can\\'t<S2SV_blank>set<S2SV_blank>altsetting<S2SV_blank>1.\\\\n\" ) ; return - EIO ; } netdev = alloc_etherdev ( sizeof ( struct catc ) ) ; if ( ! netdev ) return - ENOMEM ; catc = netdev_priv ( netdev ) ; netdev -> netdev_ops = & catc_netdev_ops ; netdev -> watchdog_timeo = TX_TIMEOUT ; netdev -> ethtool_ops = & ops ; catc -> usbdev = usbdev ; catc -> netdev = netdev ; spin_lock_init ( & catc -> tx_lock ) ; spin_lock_init ( & catc -> ctrl_lock ) ; init_timer ( & catc -> timer ) ; catc -> timer . data = ( long ) catc ; catc -> timer . function = catc_stats_timer ; catc -> ctrl_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; catc -> tx_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; catc -> rx_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; catc -> irq_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ( ! catc -> ctrl_urb ) || ( ! catc -> tx_urb ) || ( ! catc -> rx_urb ) || ( ! catc -> irq_urb ) ) { dev_err ( & intf -> dev , \"No<S2SV_blank>free<S2SV_blank>urbs<S2SV_blank>available.\\\\n\" ) ; ret = - ENOMEM ; goto fail_free ; } if ( le16_to_cpu ( usbdev -> descriptor . idVendor ) == 0x0423 && le16_to_cpu ( usbdev -> descriptor . idProduct ) == 0xa && le16_to_cpu ( catc -> usbdev -> descriptor . bcdDevice ) == 0x0130 ) { dev_dbg ( dev , \"Testing<S2SV_blank>for<S2SV_blank>f5u011\\\\n\" ) ; catc -> is_f5u011 = 1 ; atomic_set ( & catc -> recq_sz , 0 ) ; pktsz = RX_PKT_SZ ; } else { pktsz = RX_MAX_BURST * ( PKT_SZ + 2 ) ; } usb_fill_control_urb ( catc -> ctrl_urb , usbdev , usb_sndctrlpipe ( usbdev , 0 ) , NULL , NULL , 0 , catc_ctrl_done , catc ) ; usb_fill_bulk_urb ( catc -> tx_urb , usbdev , usb_sndbulkpipe ( usbdev , 1 ) , NULL , 0 , catc_tx_done , catc ) ; usb_fill_bulk_urb ( catc -> rx_urb , usbdev , usb_rcvbulkpipe ( usbdev , 1 ) , catc -> rx_buf , pktsz , catc_rx_done , catc ) ; usb_fill_int_urb ( catc -> irq_urb , usbdev , usb_rcvintpipe ( usbdev , 2 ) , catc -> irq_buf , 2 , catc_irq_done , catc , 1 ) ; if ( ! catc -> is_f5u011 ) { <S2SV_StartBug> dev_dbg ( dev , \"Checking<S2SV_blank>memory<S2SV_blank>size\\\\n\" ) ; <S2SV_EndBug> <S2SV_StartBug> i = 0x12345678 ; <S2SV_EndBug> <S2SV_StartBug> catc_write_mem ( catc , 0x7a80 , & i , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> i = 0x87654321 ; <S2SV_EndBug> <S2SV_StartBug> catc_write_mem ( catc , 0xfa80 , & i , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> catc_read_mem ( catc , 0x7a80 , & i , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> switch ( i ) { <S2SV_EndBug> case 0x12345678 : catc_set_reg ( catc , TxBufCount , 8 ) ; catc_set_reg ( catc , RxBufCount , 32 ) ; dev_dbg ( dev , \"64k<S2SV_blank>Memory\\\\n\" ) ; break ; default : dev_warn ( & intf -> dev , \"Couldn\\'t<S2SV_blank>detect<S2SV_blank>memory<S2SV_blank>size,<S2SV_blank>assuming<S2SV_blank>32k\\\\n\" ) ; case 0x87654321 : catc_set_reg ( catc , TxBufCount , 4 ) ; catc_set_reg ( catc , RxBufCount , 16 ) ; dev_dbg ( dev , \"32k<S2SV_blank>Memory\\\\n\" ) ; break ; <S2SV_StartBug> } <S2SV_EndBug> dev_dbg ( dev , \"Getting<S2SV_blank>MAC<S2SV_blank>from<S2SV_blank>SEEROM.\\\\n\" ) ; catc_get_mac ( catc , netdev -> dev_addr ) ; dev_dbg ( dev , \"Setting<S2SV_blank>MAC<S2SV_blank>into<S2SV_blank>registers.\\\\n\" ) ; for ( i = 0 ; i < 6 ; i ++ ) catc_set_reg ( catc , StationAddr0 - i , netdev -> dev_addr [ i ] ) ; dev_dbg ( dev , \"Filling<S2SV_blank>the<S2SV_blank>multicast<S2SV_blank>list.\\\\n\" ) ; eth_broadcast_addr ( broadcast ) ; catc_multicast ( broadcast , catc -> multicast ) ; catc_multicast ( netdev -> dev_addr , catc -> multicast ) ; catc_write_mem ( catc , 0xfa80 , catc -> multicast , 64 ) ; dev_dbg ( dev , \"Clearing<S2SV_blank>error<S2SV_blank>counters.\\\\n\" ) ; for ( i = 0 ; i < 8 ; i ++ ) catc_set_reg ( catc , EthStats + i , 0 ) ; catc -> last_stats = jiffies ; dev_dbg ( dev , \"Enabling.\\\\n\" ) ; catc_set_reg ( catc , MaxBurst , RX_MAX_BURST ) ; catc_set_reg ( catc , OpModes , OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits ) ; catc_set_reg ( catc , LEDCtrl , LEDLink ) ; catc_set_reg ( catc , RxUnit , RxEnable | RxPolarity | RxMultiCast ) ; } else { dev_dbg ( dev , \"Performing<S2SV_blank>reset\\\\n\" ) ; catc_reset ( catc ) ; catc_get_mac ( catc , netdev -> dev_addr ) ; dev_dbg ( dev , \"Setting<S2SV_blank>RX<S2SV_blank>Mode\\\\n\" ) ; catc -> rxmode [ 0 ] = RxEnable | RxPolarity | RxMultiCast ; catc -> rxmode [ 1 ] = 0 ; f5u011_rxmode ( catc , catc -> rxmode ) ; } dev_dbg ( dev , \"Init<S2SV_blank>done.\\\\n\" ) ; printk ( KERN_INFO \"%s:<S2SV_blank>%s<S2SV_blank>USB<S2SV_blank>Ethernet<S2SV_blank>at<S2SV_blank>usb-%s-%s,<S2SV_blank>%pM.\\\\n\" , netdev -> name , ( catc -> is_f5u011 ) ? \"Belkin<S2SV_blank>F5U011\" : \"CATC<S2SV_blank>EL1210A<S2SV_blank>NetMate\" , usbdev -> bus -> bus_name , usbdev -> devpath , netdev -> dev_addr ) ; usb_set_intfdata ( intf , catc ) ; SET_NETDEV_DEV ( netdev , & intf -> dev ) ; ret = register_netdev ( netdev ) ; if ( ret ) goto fail_clear_intfdata ; return 0 ; fail_clear_intfdata : usb_set_intfdata ( intf , NULL ) ; fail_free : usb_free_urb ( catc -> ctrl_urb ) ; usb_free_urb ( catc -> tx_urb ) ; usb_free_urb ( catc -> rx_urb ) ; usb_free_urb ( catc -> irq_urb ) ; free_netdev ( netdev ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ; int <S2SV_ModEnd> pktsz , ret <S2SV_ModStart> is_f5u011 ) { u32 * buf ; int i ; <S2SV_ModStart> \"Checking<S2SV_blank>memory<S2SV_blank>size\\\\n\" ) ; buf = kmalloc ( 4 , GFP_KERNEL ) ; if ( ! buf ) { ret = - ENOMEM ; goto fail_free ; } * buf <S2SV_ModEnd> = 0x12345678 ; <S2SV_ModStart> , 0x7a80 , buf <S2SV_ModEnd> , 4 ) <S2SV_ModStart> 4 ) ; * buf <S2SV_ModEnd> = 0x87654321 ; <S2SV_ModStart> , 0xfa80 , buf <S2SV_ModEnd> , 4 ) <S2SV_ModStart> , 0x7a80 , buf <S2SV_ModEnd> , 4 ) <S2SV_ModStart> ; switch ( * buf <S2SV_ModEnd> ) { case <S2SV_ModStart> break ; } kfree ( buf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7533\n\n```\nCWE-362 int vfs_rename ( struct inode * old_dir , struct dentry * old_dentry , struct inode * new_dir , struct dentry * new_dentry , struct inode * * delegated_inode , unsigned int flags ) { int error ; bool is_dir = d_is_dir ( old_dentry ) ; <S2SV_StartBug> const unsigned char * old_name ; <S2SV_EndBug> struct inode * source = old_dentry -> d_inode ; struct inode * target = new_dentry -> d_inode ; bool new_is_dir = false ; unsigned max_links = new_dir -> i_sb -> s_max_links ; <S2SV_StartBug> if ( source == target ) <S2SV_EndBug> return 0 ; error = may_delete ( old_dir , old_dentry , is_dir ) ; if ( error ) return error ; if ( ! target ) { error = may_create ( new_dir , new_dentry ) ; } else { new_is_dir = d_is_dir ( new_dentry ) ; if ( ! ( flags & RENAME_EXCHANGE ) ) error = may_delete ( new_dir , new_dentry , is_dir ) ; else error = may_delete ( new_dir , new_dentry , new_is_dir ) ; } if ( error ) return error ; if ( ! old_dir -> i_op -> rename ) return - EPERM ; if ( new_dir != old_dir ) { if ( is_dir ) { error = inode_permission ( source , MAY_WRITE ) ; if ( error ) return error ; } if ( ( flags & RENAME_EXCHANGE ) && new_is_dir ) { error = inode_permission ( target , MAY_WRITE ) ; if ( error ) return error ; } } error = security_inode_rename ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; if ( error ) return error ; <S2SV_StartBug> old_name = fsnotify_oldname_init ( old_dentry -> d_name . name ) ; <S2SV_EndBug> dget ( new_dentry ) ; if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) lock_two_nondirectories ( source , target ) ; else if ( target ) inode_lock ( target ) ; error = - EBUSY ; if ( is_local_mountpoint ( old_dentry ) || is_local_mountpoint ( new_dentry ) ) goto out ; if ( max_links && new_dir != old_dir ) { error = - EMLINK ; if ( is_dir && ! new_is_dir && new_dir -> i_nlink >= max_links ) goto out ; if ( ( flags & RENAME_EXCHANGE ) && ! is_dir && new_is_dir && old_dir -> i_nlink >= max_links ) goto out ; } if ( is_dir && ! ( flags & RENAME_EXCHANGE ) && target ) shrink_dcache_parent ( new_dentry ) ; if ( ! is_dir ) { error = try_break_deleg ( source , delegated_inode ) ; if ( error ) goto out ; } if ( target && ! new_is_dir ) { error = try_break_deleg ( target , delegated_inode ) ; if ( error ) goto out ; } error = old_dir -> i_op -> rename ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; if ( error ) goto out ; if ( ! ( flags & RENAME_EXCHANGE ) && target ) { if ( is_dir ) target -> i_flags |= S_DEAD ; dont_mount ( new_dentry ) ; detach_mounts ( new_dentry ) ; } if ( ! ( old_dir -> i_sb -> s_type -> fs_flags & FS_RENAME_DOES_D_MOVE ) ) { if ( ! ( flags & RENAME_EXCHANGE ) ) d_move ( old_dentry , new_dentry ) ; else d_exchange ( old_dentry , new_dentry ) ; } out : if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) unlock_two_nondirectories ( source , target ) ; else if ( target ) inode_unlock ( target ) ; dput ( new_dentry ) ; if ( ! error ) { fsnotify_move ( old_dir , new_dir , old_name , is_dir , ! ( flags & RENAME_EXCHANGE ) ? target : NULL , old_dentry ) ; if ( flags & RENAME_EXCHANGE ) { fsnotify_move ( new_dir , old_dir , old_dentry -> d_name . name , new_is_dir , NULL , new_dentry ) ; } } fsnotify_oldname_free ( old_name ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> old_dentry ) ; <S2SV_ModEnd> struct inode * <S2SV_ModStart> -> s_max_links ; struct name_snapshot old_name ; <S2SV_ModStart> return error ; take_dentry_name_snapshot ( & old_name , old_dentry ) ; dget ( new_dentry ) ; if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) lock_two_nondirectories ( source , target ) ; else if ( target ) inode_lock ( target ) ; error = - EBUSY ; if ( is_local_mountpoint ( old_dentry ) || is_local_mountpoint ( new_dentry ) ) goto out ; if ( max_links && new_dir != old_dir ) { error = - EMLINK ; if ( is_dir && ! new_is_dir && new_dir -> i_nlink >= max_links ) goto out ; if ( ( flags & RENAME_EXCHANGE ) && ! is_dir && new_is_dir && old_dir -> i_nlink >= max_links ) goto out ; } if ( is_dir && ! ( flags & RENAME_EXCHANGE ) && target ) shrink_dcache_parent ( new_dentry ) ; if ( ! is_dir ) { error = try_break_deleg ( source , delegated_inode ) ; if ( error ) goto out ; } if ( target && ! new_is_dir ) { error = try_break_deleg ( target , delegated_inode ) ; if ( error ) goto out ; } error = old_dir -> i_op -> rename ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; if ( error ) goto out ; if ( ! ( flags & RENAME_EXCHANGE ) && target ) { if ( is_dir ) target -> i_flags |= S_DEAD ; dont_mount ( new_dentry ) ; detach_mounts ( new_dentry ) ; } if ( ! ( old_dir -> i_sb -> s_type -> fs_flags & FS_RENAME_DOES_D_MOVE ) ) { if ( ! ( flags & RENAME_EXCHANGE ) ) d_move ( old_dentry , new_dentry ) ; else d_exchange ( old_dentry , new_dentry ) ; } out : if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) unlock_two_nondirectories ( source , target ) ; else if ( target ) inode_unlock ( target ) ; dput ( new_dentry ) ; if ( ! error ) { fsnotify_move ( old_dir , new_dir , old_name . name , is_dir , ! ( flags & RENAME_EXCHANGE ) ? target : NULL , old_dentry ) ; if ( flags & RENAME_EXCHANGE ) { fsnotify_move ( new_dir , old_dir , <S2SV_ModEnd> old_dentry -> d_name <S2SV_ModStart> d_name . name , new_is_dir , NULL , new_dentry ) ; } } release_dentry_name_snapshot ( & old_name <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3070\n\n```\nCWE-476 void migrate_page_copy ( struct page * newpage , struct page * page ) { int cpupid ; if ( PageHuge ( page ) || PageTransHuge ( page ) ) copy_huge_page ( newpage , page ) ; else copy_highpage ( newpage , page ) ; if ( PageError ( page ) ) SetPageError ( newpage ) ; if ( PageReferenced ( page ) ) SetPageReferenced ( newpage ) ; if ( PageUptodate ( page ) ) SetPageUptodate ( newpage ) ; if ( TestClearPageActive ( page ) ) { VM_BUG_ON_PAGE ( PageUnevictable ( page ) , page ) ; SetPageActive ( newpage ) ; } else if ( TestClearPageUnevictable ( page ) ) SetPageUnevictable ( newpage ) ; if ( PageChecked ( page ) ) SetPageChecked ( newpage ) ; if ( PageMappedToDisk ( page ) ) SetPageMappedToDisk ( newpage ) ; <S2SV_StartBug> if ( PageDirty ( page ) ) { <S2SV_EndBug> clear_page_dirty_for_io ( page ) ; if ( PageSwapBacked ( page ) ) SetPageDirty ( newpage ) ; <S2SV_StartBug> else <S2SV_EndBug> __set_page_dirty_nobuffers ( newpage ) ; } if ( page_is_young ( page ) ) set_page_young ( newpage ) ; if ( page_is_idle ( page ) ) set_page_idle ( newpage ) ; cpupid = page_cpupid_xchg_last ( page , - 1 ) ; page_cpupid_xchg_last ( newpage , cpupid ) ; ksm_migrate_page ( newpage , page ) ; if ( PageSwapCache ( page ) ) ClearPageSwapCache ( page ) ; ClearPagePrivate ( page ) ; set_page_private ( page , 0 ) ; if ( PageWriteback ( newpage ) ) end_page_writeback ( newpage ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> page ) ) <S2SV_ModEnd> SetPageDirty ( newpage <S2SV_ModStart> newpage ) ; <S2SV_ModEnd> if ( page_is_young\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7446\n\n```\nCWE-000 static struct sock * unix_create1 ( struct net * net , struct socket * sock , int kern ) { struct sock * sk = NULL ; struct unix_sock * u ; atomic_long_inc ( & unix_nr_socks ) ; if ( atomic_long_read ( & unix_nr_socks ) > 2 * get_max_files ( ) ) goto out ; sk = sk_alloc ( net , PF_UNIX , GFP_KERNEL , & unix_proto , kern ) ; if ( ! sk ) goto out ; sock_init_data ( sock , sk ) ; lockdep_set_class ( & sk -> sk_receive_queue . lock , & af_unix_sk_receive_queue_lock_key ) ; sk -> sk_write_space = unix_write_space ; sk -> sk_max_ack_backlog = net -> unx . sysctl_max_dgram_qlen ; sk -> sk_destruct = unix_sock_destructor ; u = unix_sk ( sk ) ; u -> path . dentry = NULL ; u -> path . mnt = NULL ; spin_lock_init ( & u -> lock ) ; atomic_long_set ( & u -> inflight , 0 ) ; INIT_LIST_HEAD ( & u -> link ) ; mutex_init ( & u -> readlock ) ; init_waitqueue_head ( & u -> peer_wait ) ; <S2SV_StartBug> unix_insert_socket ( unix_sockets_unbound ( sk ) , sk ) ; <S2SV_EndBug> out : if ( sk == NULL ) atomic_long_dec ( & unix_nr_socks ) ; else { local_bh_disable ( ) ; sock_prot_inuse_add ( sock_net ( sk ) , sk -> sk_prot , 1 ) ; local_bh_enable ( ) ; } return sk ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> peer_wait ) ; init_waitqueue_func_entry ( & u -> peer_wake , unix_dgram_peer_wake_relay ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 static int snd_ctl_elem_user_put ( struct snd_kcontrol * kcontrol , struct snd_ctl_elem_value * ucontrol ) { int change ; <S2SV_StartBug> struct user_element * ue = kcontrol -> private_data ; <S2SV_EndBug> change = memcmp ( & ucontrol -> value , ue -> elem_data , ue -> elem_data_size ) != 0 ; if ( change ) memcpy ( ue -> elem_data , & ucontrol -> value , ue -> elem_data_size ) ; <S2SV_StartBug> return change ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> kcontrol -> private_data ; mutex_lock ( & ue -> card -> user_ctl_lock ) <S2SV_ModStart> elem_data_size ) ; mutex_unlock ( & ue -> card -> user_ctl_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-310 static VALUE ossl_cipher_initialize ( VALUE self , VALUE str ) { EVP_CIPHER_CTX * ctx ; const EVP_CIPHER * cipher ; <S2SV_StartBug> char * name ; <S2SV_EndBug> unsigned char dummy_key [ EVP_MAX_KEY_LENGTH ] = { 0 } ; name = StringValueCStr ( str ) ; GetCipherInit ( self , ctx ) ; if ( ctx ) { ossl_raise ( rb_eRuntimeError , \"Cipher<S2SV_blank>already<S2SV_blank>inititalized!\" ) ; } AllocCipher ( self , ctx ) ; if ( ! ( cipher = EVP_get_cipherbyname ( name ) ) ) { ossl_raise ( rb_eRuntimeError , \"unsupported<S2SV_blank>cipher<S2SV_blank>algorithm<S2SV_blank>(%\" PRIsVALUE \")\" , str ) ; } <S2SV_StartBug> if ( EVP_CipherInit_ex ( ctx , cipher , NULL , dummy_key , NULL , - 1 ) != 1 ) <S2SV_EndBug> ossl_raise ( eCipherError , NULL ) ; return self ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * name <S2SV_ModEnd> ; name = <S2SV_ModStart> , NULL , NULL <S2SV_ModEnd> , NULL ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10966\n\n```\nCWE-416 static void nick_hash_remove ( CHANNEL_REC * channel , NICK_REC * nick ) { <S2SV_StartBug> NICK_REC * list ; <S2SV_EndBug> list = g_hash_table_lookup ( channel -> nicks , nick -> nick ) ; if ( list == NULL ) return ; <S2SV_StartBug> if ( list == nick || list -> next == NULL ) { <S2SV_EndBug> g_hash_table_remove ( channel -> nicks , nick -> nick ) ; if ( list -> next != NULL ) { <S2SV_StartBug> g_hash_table_insert ( channel -> nicks , nick -> next -> nick , <S2SV_EndBug> nick -> next ) ; } <S2SV_StartBug> } else { <S2SV_EndBug> while ( list -> next != nick ) list = list -> next ; list -> next = nick -> next ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NICK_REC * list , * newlist <S2SV_ModStart> list == nick ) { newlist = <S2SV_ModEnd> nick -> next <S2SV_ModStart> nick -> next ; <S2SV_ModEnd> } else { <S2SV_ModStart> } else { newlist = list ; <S2SV_ModStart> next ; } g_hash_table_remove ( channel -> nicks , nick -> nick ) ; if ( newlist != NULL ) { g_hash_table_insert ( channel -> nicks , newlist -> nick , newlist ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> jas_matrix_t * jas_seq2d_create ( int xstart , int ystart , int xend , int yend ) <S2SV_EndBug> { jas_matrix_t * matrix ; assert ( xstart <= xend && ystart <= yend ) ; if ( ! ( matrix = jas_matrix_create ( yend - ystart , xend - xstart ) ) ) { return 0 ; } matrix -> xstart_ = xstart ; matrix -> ystart_ = ystart ; matrix -> xend_ = xend ; matrix -> yend_ = yend ; return matrix ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * jas_seq2d_create ( jas_matind_t xstart , jas_matind_t ystart , jas_matind_t xend , jas_matind_t <S2SV_ModEnd> yend ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-77 enum ImapAuthRes imap_auth_login ( struct ImapData * idata , const char * method ) { char q_user [ SHORT_STRING ] , q_pass [ SHORT_STRING ] ; char buf [ STRING ] ; int rc ; if ( mutt_bit_isset ( idata -> capabilities , LOGINDISABLED ) ) { mutt_message ( _ ( \"LOGIN<S2SV_blank>disabled<S2SV_blank>on<S2SV_blank>this<S2SV_blank>server.\" ) ) ; return IMAP_AUTH_UNAVAIL ; } if ( mutt_account_getuser ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; if ( mutt_account_getpass ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; mutt_message ( _ ( \"Logging<S2SV_blank>in...\" ) ) ; <S2SV_StartBug> imap_quote_string ( q_user , sizeof ( q_user ) , idata -> conn -> account . user ) ; <S2SV_EndBug> <S2SV_StartBug> imap_quote_string ( q_pass , sizeof ( q_pass ) , idata -> conn -> account . pass ) ; <S2SV_EndBug> if ( DebugLevel < IMAP_LOG_PASS ) mutt_debug ( 2 , \"Sending<S2SV_blank>LOGIN<S2SV_blank>command<S2SV_blank>for<S2SV_blank>%s...\\\\n\" , idata -> conn -> account . user ) ; snprintf ( buf , sizeof ( buf ) , \"LOGIN<S2SV_blank>%s<S2SV_blank>%s\" , q_user , q_pass ) ; rc = imap_exec ( idata , buf , IMAP_CMD_FAIL_OK | IMAP_CMD_PASS ) ; if ( ! rc ) { mutt_clear_error ( ) ; return IMAP_AUTH_SUCCESS ; } mutt_error ( _ ( \"Login<S2SV_blank>failed.\" ) ) ; return IMAP_AUTH_FAILURE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> account . user , false <S2SV_ModStart> account . pass , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static void pci_emul_cmdsts_write ( struct pci_vdev * dev , int coff , uint32_t new , int bytes ) { int i , rshift ; uint32_t cmd , cmd2 , changed , old , readonly ; cmd = pci_get_cfgdata16 ( dev , PCIR_COMMAND ) ; rshift = ( coff & 0x3 ) * 8 ; readonly = 0xFFFFF880 >> rshift ; old = CFGREAD ( dev , coff , bytes ) ; new &= ~ readonly ; new |= ( old & readonly ) ; CFGWRITE ( dev , coff , new , bytes ) ; cmd2 = pci_get_cfgdata16 ( dev , PCIR_COMMAND ) ; changed = cmd ^ cmd2 ; for ( i = 0 ; i <= PCI_BARMAX ; i ++ ) { switch ( dev -> bar [ i ] . type ) { case PCIBAR_NONE : case PCIBAR_MEMHI64 : break ; case PCIBAR_IO : if ( changed & PCIM_CMD_PORTEN ) { if ( porten ( dev ) ) register_bar ( dev , i ) ; else unregister_bar ( dev , i ) ; } break ; case PCIBAR_MEM32 : case PCIBAR_MEM64 : if ( changed & PCIM_CMD_MEMEN ) { if ( memen ( dev ) ) register_bar ( dev , i ) ; else unregister_bar ( dev , i ) ; } break ; default : <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> } } pci_lintr_update ( dev ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; default : pr_err ( \"%s:<S2SV_blank>invalid<S2SV_blank>bar<S2SV_blank>type<S2SV_blank>%d\\\\n\" , __func__ , dev -> bar [ i ] . type ) ; return <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11381\n\n```\nCWE-125 static int string_scan_range ( RList * list , RBinFile * bf , int min , const ut64 from , const ut64 to , int type ) { ut8 tmp [ R_STRING_SCAN_BUFFER_SIZE ] ; ut64 str_start , needle = from ; int count = 0 , i , rc , runes ; int str_type = R_STRING_TYPE_DETECT ; if ( type == - 1 ) { type = R_STRING_TYPE_DETECT ; } if ( from >= to ) { eprintf ( \"Invalid<S2SV_blank>range<S2SV_blank>to<S2SV_blank>find<S2SV_blank>strings<S2SV_blank>0x%llx<S2SV_blank>..<S2SV_blank>0x%llx\\\\n\" , from , to ) ; return - 1 ; } <S2SV_StartBug> ut8 * buf = calloc ( to - from , 1 ) ; <S2SV_EndBug> if ( ! buf || ! min ) { return - 1 ; } <S2SV_StartBug> r_buf_read_at ( bf -> buf , from , buf , to - from ) ; <S2SV_EndBug> while ( needle < to ) { rc = r_utf8_decode ( buf + needle - from , to - needle , NULL ) ; if ( ! rc ) { needle ++ ; continue ; } if ( type == R_STRING_TYPE_DETECT ) { char * w = ( char * ) buf + needle + rc - from ; <S2SV_StartBug> if ( ( to - needle ) > 5 ) { <S2SV_EndBug> <S2SV_StartBug> bool is_wide32 = needle + rc + 2 < to && ! w [ 0 ] && ! w [ 1 ] && ! w [ 2 ] && w [ 3 ] && ! w [ 4 ] ; <S2SV_EndBug> if ( is_wide32 ) { str_type = R_STRING_TYPE_WIDE32 ; } else { bool is_wide = needle + rc + 2 < to && ! w [ 0 ] && w [ 1 ] && ! w [ 2 ] ; str_type = is_wide ? R_STRING_TYPE_WIDE : R_STRING_TYPE_ASCII ; } } else { str_type = R_STRING_TYPE_ASCII ; } } else { str_type = type ; } runes = 0 ; str_start = needle ; for ( rc = i = 0 ; i < sizeof ( tmp ) - 3 && needle < to ; i += rc ) { RRune r = { 0 } ; if ( str_type == R_STRING_TYPE_WIDE32 ) { rc = r_utf32le_decode ( buf + needle - from , to - needle , & r ) ; if ( rc ) { rc = 4 ; } } else if ( str_type == R_STRING_TYPE_WIDE ) { rc = r_utf16le_decode ( buf + needle - from , to - needle , & r ) ; if ( rc == 1 ) { rc = 2 ; } } else { rc = r_utf8_decode ( buf + needle - from , to - needle , & r ) ; if ( rc > 1 ) { str_type = R_STRING_TYPE_UTF8 ; } } if ( ! rc ) { needle ++ ; break ; } needle += rc ; if ( r_isprint ( r ) && r != '\\\\\\\\' ) { if ( str_type == R_STRING_TYPE_WIDE32 ) { if ( r == 0xff ) { r = 0 ; } } rc = r_utf8_encode ( & tmp [ i ] , r ) ; runes ++ ; } else if ( r && r < 0x100 && strchr ( \"\\\\b\\\\v\\\\f\\\\n\\\\r\\\\t\\\\a\\\\033\\\\\\\\\" , ( char ) r ) ) { if ( ( i + 32 ) < sizeof ( tmp ) && r < 93 ) { tmp [ i + 0 ] = '\\\\\\\\' ; tmp [ i + 1 ] = \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>abtnvfr<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>e<S2SV_blank><S2SV_blank>\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" \"<S2SV_blank><S2SV_blank>\\\\\\\\\" [ r ] ; } else { break ; } rc = 2 ; runes ++ ; } else { break ; } } tmp [ i ++ ] = '\\\\0' ; if ( runes >= min ) { if ( str_type == R_STRING_TYPE_ASCII ) { int j ; for ( j = 0 ; j < i ; j ++ ) { char ch = tmp [ j ] ; if ( ch != '\\\\n' && ch != '\\\\r' && ch != '\\\\t' ) { if ( ! IS_PRINTABLE ( tmp [ j ] ) ) { continue ; } } } } RBinString * bs = R_NEW0 ( RBinString ) ; if ( ! bs ) { break ; } bs -> type = str_type ; bs -> length = runes ; bs -> size = needle - str_start ; bs -> ordinal = count ++ ; switch ( str_type ) { case R_STRING_TYPE_WIDE : if ( str_start - from > 1 ) { const ut8 * p = buf + str_start - 2 - from ; if ( p [ 0 ] == 0xff && p [ 1 ] == 0xfe ) { str_start -= 2 ; } } break ; case R_STRING_TYPE_WIDE32 : if ( str_start - from > 3 ) { const ut8 * p = buf + str_start - 4 - from ; if ( p [ 0 ] == 0xff && p [ 1 ] == 0xfe ) { str_start -= 4 ; } } break ; } bs -> paddr = bs -> vaddr = str_start ; bs -> string = r_str_ndup ( ( const char * ) tmp , i ) ; if ( list ) { r_list_append ( list , bs ) ; } else { print_string ( bs , bf ) ; r_bin_string_free ( bs ) ; } } } free ( buf ) ; return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; } int len = to - from ; <S2SV_ModStart> = calloc ( len <S2SV_ModEnd> , 1 ) <S2SV_ModStart> , buf , len <S2SV_ModEnd> ) ; while <S2SV_ModStart> ) > 5 + rc <S2SV_ModStart> bool is_wide32 = ( <S2SV_ModStart> 2 < to ) && ( <S2SV_ModEnd> ! w [ <S2SV_ModStart> [ 4 ] )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_set_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> vpx_ref_frame_t * const frame = va_arg ( args , vpx_ref_frame_t * ) ; if ( frame != NULL ) { YV12_BUFFER_CONFIG sd ; image2yuvconfig ( & frame -> img , & sd ) ; vp9_set_reference_enc ( ctx -> cpi , ref_frame_to_vp9_reframe ( frame -> frame_type ) , & sd ) ; return VPX_CODEC_OK ; } else { return VPX_CODEC_INVALID_PARAM ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18710\n\n```\nCWE-200 static int cdrom_ioctl_select_disc ( struct cdrom_device_info * cdi , unsigned long arg ) { cd_dbg ( CD_DO_IOCTL , \"entering<S2SV_blank>CDROM_SELECT_DISC\\\\n\" ) ; if ( ! CDROM_CAN ( CDC_SELECT_DISC ) ) return - ENOSYS ; if ( arg != CDSL_CURRENT && arg != CDSL_NONE ) { <S2SV_StartBug> if ( ( int ) arg >= cdi -> capacity ) <S2SV_EndBug> return - EINVAL ; } if ( cdi -> ops -> select_disc ) return cdi -> ops -> select_disc ( cdi , arg ) ; cd_dbg ( CD_CHANGER , \"Using<S2SV_blank>generic<S2SV_blank>cdrom_select_disc()\\\\n\" ) ; return cdrom_select_disc ( cdi , arg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( <S2SV_ModEnd> arg >= cdi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3191\n\n```\nCWE-189 int CIFSFindNext ( const int xid , struct cifs_tcon * tcon , __u16 searchHandle , struct cifs_search_info * psrch_inf ) { TRANSACTION2_FNEXT_REQ * pSMB = NULL ; TRANSACTION2_FNEXT_RSP * pSMBr = NULL ; T2_FNEXT_RSP_PARMS * parms ; char * response_data ; int rc = 0 ; <S2SV_StartBug> int bytes_returned , name_len ; <S2SV_EndBug> __u16 params , byte_count ; cFYI ( 1 , \"In<S2SV_blank>FindNext\" ) ; if ( psrch_inf -> endOfSearch ) return - ENOENT ; rc = smb_init ( SMB_COM_TRANSACTION2 , 15 , tcon , ( void * * ) & pSMB , ( void * * ) & pSMBr ) ; if ( rc ) return rc ; params = 14 ; byte_count = 0 ; pSMB -> TotalDataCount = 0 ; pSMB -> MaxParameterCount = cpu_to_le16 ( 8 ) ; pSMB -> MaxDataCount = cpu_to_le16 ( ( tcon -> ses -> server -> maxBuf - MAX_CIFS_HDR_SIZE ) & 0xFFFFFF00 ) ; pSMB -> MaxSetupCount = 0 ; pSMB -> Reserved = 0 ; pSMB -> Flags = 0 ; pSMB -> Timeout = 0 ; pSMB -> Reserved2 = 0 ; pSMB -> ParameterOffset = cpu_to_le16 ( offsetof ( struct smb_com_transaction2_fnext_req , SearchHandle ) - 4 ) ; pSMB -> DataCount = 0 ; pSMB -> DataOffset = 0 ; pSMB -> SetupCount = 1 ; pSMB -> Reserved3 = 0 ; pSMB -> SubCommand = cpu_to_le16 ( TRANS2_FIND_NEXT ) ; pSMB -> SearchHandle = searchHandle ; pSMB -> SearchCount = cpu_to_le16 ( CIFSMaxBufSize / sizeof ( FILE_UNIX_INFO ) ) ; pSMB -> InformationLevel = cpu_to_le16 ( psrch_inf -> info_level ) ; pSMB -> ResumeKey = psrch_inf -> resume_key ; pSMB -> SearchFlags = cpu_to_le16 ( CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME ) ; name_len = psrch_inf -> resume_name_len ; params += name_len ; if ( name_len < PATH_MAX ) { memcpy ( pSMB -> ResumeFileName , psrch_inf -> presume_name , name_len ) ; byte_count += name_len ; pSMB -> ResumeFileName [ name_len ] = 0 ; pSMB -> ResumeFileName [ name_len + 1 ] = 0 ; } else { rc = - EINVAL ; goto FNext2_err_exit ; } byte_count = params + 1 ; pSMB -> TotalParameterCount = cpu_to_le16 ( params ) ; pSMB -> ParameterCount = pSMB -> TotalParameterCount ; inc_rfc1001_len ( pSMB , byte_count ) ; pSMB -> ByteCount = cpu_to_le16 ( byte_count ) ; rc = SendReceive ( xid , tcon -> ses , ( struct smb_hdr * ) pSMB , ( struct smb_hdr * ) pSMBr , & bytes_returned , 0 ) ; cifs_stats_inc ( & tcon -> num_fnext ) ; if ( rc ) { if ( rc == - EBADF ) { psrch_inf -> endOfSearch = true ; cifs_buf_release ( pSMB ) ; rc = 0 ; } else cFYI ( 1 , \"FindNext<S2SV_blank>returned<S2SV_blank>=<S2SV_blank>%d\" , rc ) ; } else { rc = validate_t2 ( ( struct smb_t2_rsp * ) pSMBr ) ; if ( rc == 0 ) { unsigned int lnoff ; if ( pSMBr -> hdr . Flags2 & SMBFLG2_UNICODE ) psrch_inf -> unicode = true ; else psrch_inf -> unicode = false ; response_data = ( char * ) & pSMBr -> hdr . Protocol + le16_to_cpu ( pSMBr -> t2 . ParameterOffset ) ; parms = ( T2_FNEXT_RSP_PARMS * ) response_data ; response_data = ( char * ) & pSMBr -> hdr . Protocol + le16_to_cpu ( pSMBr -> t2 . DataOffset ) ; if ( psrch_inf -> smallBuf ) cifs_small_buf_release ( psrch_inf -> ntwrk_buf_start ) ; else cifs_buf_release ( psrch_inf -> ntwrk_buf_start ) ; psrch_inf -> srch_entries_start = response_data ; psrch_inf -> ntwrk_buf_start = ( char * ) pSMB ; psrch_inf -> smallBuf = 0 ; if ( parms -> EndofSearch ) psrch_inf -> endOfSearch = true ; else psrch_inf -> endOfSearch = false ; psrch_inf -> entries_in_buffer = le16_to_cpu ( parms -> SearchCount ) ; psrch_inf -> index_of_last_entry += psrch_inf -> entries_in_buffer ; lnoff = le16_to_cpu ( parms -> LastNameOffset ) ; if ( tcon -> ses -> server -> maxBuf - MAX_CIFS_HDR_SIZE < lnoff ) { cERROR ( 1 , \"ignoring<S2SV_blank>corrupt<S2SV_blank>resume<S2SV_blank>name\" ) ; psrch_inf -> last_entry = NULL ; return rc ; } else psrch_inf -> last_entry = psrch_inf -> srch_entries_start + lnoff ; } } FNext2_err_exit : if ( rc != 0 ) cifs_buf_release ( pSMB ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int bytes_returned ; unsigned int <S2SV_ModEnd> name_len ; __u16\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010298\n\n```\nCWE-119 TEE_Result syscall_asymm_operate ( unsigned long state , const struct utee_attribute * usr_params , size_t num_params , const void * src_data , size_t src_len , void * dst_data , uint64_t * dst_len ) { TEE_Result res ; struct tee_cryp_state * cs ; struct tee_ta_session * sess ; uint64_t dlen64 ; size_t dlen ; struct tee_obj * o ; void * label = NULL ; size_t label_len = 0 ; size_t n ; int salt_len ; TEE_Attribute * params = NULL ; struct user_ta_ctx * utc ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; utc = to_user_ta_ctx ( sess -> ctx ) ; res = tee_svc_cryp_get_state ( sess , tee_svc_uref_to_vaddr ( state ) , & cs ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) src_data , src_len ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_svc_copy_from_user ( & dlen64 , dst_len , sizeof ( dlen64 ) ) ; if ( res != TEE_SUCCESS ) return res ; dlen = dlen64 ; res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_WRITE | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) dst_data , dlen ) ; if ( res != TEE_SUCCESS ) return res ; <S2SV_StartBug> params = malloc ( sizeof ( TEE_Attribute ) * num_params ) ; <S2SV_EndBug> if ( ! params ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( utc , usr_params , num_params , params ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_obj_get ( utc , cs -> key1 , & o ) ; if ( res != TEE_SUCCESS ) goto out ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_INITIALIZED ) == 0 ) { res = TEE_ERROR_GENERIC ; goto out ; } switch ( cs -> algo ) { case TEE_ALG_RSA_NOPAD : if ( cs -> mode == TEE_MODE_ENCRYPT ) { res = crypto_acipher_rsanopad_encrypt ( o -> attr , src_data , src_len , dst_data , & dlen ) ; } else if ( cs -> mode == TEE_MODE_DECRYPT ) { res = crypto_acipher_rsanopad_decrypt ( o -> attr , src_data , src_len , dst_data , & dlen ) ; } else { res = TEE_ERROR_GENERIC ; } break ; case TEE_ALG_RSAES_PKCS1_V1_5 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA1 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA224 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA256 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA384 : case TEE_ALG_RSAES_PKCS1_OAEP_MGF1_SHA512 : for ( n = 0 ; n < num_params ; n ++ ) { if ( params [ n ] . attributeID == TEE_ATTR_RSA_OAEP_LABEL ) { label = params [ n ] . content . ref . buffer ; label_len = params [ n ] . content . ref . length ; break ; } } if ( cs -> mode == TEE_MODE_ENCRYPT ) { res = crypto_acipher_rsaes_encrypt ( cs -> algo , o -> attr , label , label_len , src_data , src_len , dst_data , & dlen ) ; } else if ( cs -> mode == TEE_MODE_DECRYPT ) { res = crypto_acipher_rsaes_decrypt ( cs -> algo , o -> attr , label , label_len , src_data , src_len , dst_data , & dlen ) ; } else { res = TEE_ERROR_BAD_PARAMETERS ; } break ; # if defined ( CFG_CRYPTO_RSASSA_NA1 ) case TEE_ALG_RSASSA_PKCS1_V1_5 : # endif case TEE_ALG_RSASSA_PKCS1_V1_5_MD5 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA1 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA224 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA256 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA384 : case TEE_ALG_RSASSA_PKCS1_V1_5_SHA512 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA1 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA224 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA256 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA384 : case TEE_ALG_RSASSA_PKCS1_PSS_MGF1_SHA512 : if ( cs -> mode != TEE_MODE_SIGN ) { res = TEE_ERROR_BAD_PARAMETERS ; break ; } salt_len = pkcs1_get_salt_len ( params , num_params , src_len ) ; res = crypto_acipher_rsassa_sign ( cs -> algo , o -> attr , salt_len , src_data , src_len , dst_data , & dlen ) ; break ; case TEE_ALG_DSA_SHA1 : case TEE_ALG_DSA_SHA224 : case TEE_ALG_DSA_SHA256 : res = crypto_acipher_dsa_sign ( cs -> algo , o -> attr , src_data , src_len , dst_data , & dlen ) ; break ; case TEE_ALG_ECDSA_P192 : case TEE_ALG_ECDSA_P224 : case TEE_ALG_ECDSA_P256 : case TEE_ALG_ECDSA_P384 : case TEE_ALG_ECDSA_P521 : res = crypto_acipher_ecc_sign ( cs -> algo , o -> attr , src_data , src_len , dst_data , & dlen ) ; break ; default : res = TEE_ERROR_BAD_PARAMETERS ; break ; } out : free ( params ) ; if ( res == TEE_SUCCESS || res == TEE_ERROR_SHORT_BUFFER ) { TEE_Result res2 ; dlen64 = dlen ; res2 = tee_svc_copy_to_user ( dst_len , & dlen64 , sizeof ( * dst_len ) ) ; if ( res2 != TEE_SUCCESS ) return res2 ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , num_params , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16996\n\n```\nCWE-119 static int check_mem_access ( struct bpf_verifier_env * env , int insn_idx , u32 regno , int off , int bpf_size , enum bpf_access_type t , int value_regno ) { struct bpf_verifier_state * state = env -> cur_state ; struct bpf_reg_state * regs = cur_regs ( env ) ; struct bpf_reg_state * reg = regs + regno ; int size , err = 0 ; size = bpf_size_to_bytes ( bpf_size ) ; if ( size < 0 ) return size ; err = check_ptr_alignment ( env , reg , off , size ) ; if ( err ) return err ; off += reg -> off ; if ( reg -> type == PTR_TO_MAP_VALUE ) { if ( t == BPF_WRITE && value_regno >= 0 && is_pointer_value ( env , value_regno ) ) { verbose ( env , \"R%d<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>into<S2SV_blank>map\\\\n\" , value_regno ) ; return - EACCES ; } err = check_map_access ( env , regno , off , size , false ) ; if ( ! err && t == BPF_READ && value_regno >= 0 ) mark_reg_unknown ( env , regs , value_regno ) ; } else if ( reg -> type == PTR_TO_CTX ) { enum bpf_reg_type reg_type = SCALAR_VALUE ; if ( t == BPF_WRITE && value_regno >= 0 && is_pointer_value ( env , value_regno ) ) { verbose ( env , \"R%d<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>into<S2SV_blank>ctx\\\\n\" , value_regno ) ; return - EACCES ; } if ( reg -> off ) { verbose ( env , \"dereference<S2SV_blank>of<S2SV_blank>modified<S2SV_blank>ctx<S2SV_blank>ptr<S2SV_blank>R%d<S2SV_blank>off=%d+%d,<S2SV_blank>ctx+const<S2SV_blank>is<S2SV_blank>allowed,<S2SV_blank>ctx+const+const<S2SV_blank>is<S2SV_blank>not\\\\n\" , regno , reg -> off , off - reg -> off ) ; return - EACCES ; } if ( ! tnum_is_const ( reg -> var_off ) || reg -> var_off . value ) { char tn_buf [ 48 ] ; tnum_strn ( tn_buf , sizeof ( tn_buf ) , reg -> var_off ) ; verbose ( env , \"variable<S2SV_blank>ctx<S2SV_blank>access<S2SV_blank>var_off=%s<S2SV_blank>off=%d<S2SV_blank>size=%d\" , tn_buf , off , size ) ; return - EACCES ; } err = check_ctx_access ( env , insn_idx , off , size , t , & reg_type ) ; if ( ! err && t == BPF_READ && value_regno >= 0 ) { if ( reg_type == SCALAR_VALUE ) mark_reg_unknown ( env , regs , value_regno ) ; else mark_reg_known_zero ( env , regs , value_regno ) ; regs [ value_regno ] . id = 0 ; regs [ value_regno ] . off = 0 ; regs [ value_regno ] . range = 0 ; regs [ value_regno ] . type = reg_type ; } } else if ( reg -> type == PTR_TO_STACK ) { if ( ! tnum_is_const ( reg -> var_off ) ) { char tn_buf [ 48 ] ; tnum_strn ( tn_buf , sizeof ( tn_buf ) , reg -> var_off ) ; verbose ( env , \"variable<S2SV_blank>stack<S2SV_blank>access<S2SV_blank>var_off=%s<S2SV_blank>off=%d<S2SV_blank>size=%d\" , tn_buf , off , size ) ; return - EACCES ; } off += reg -> var_off . value ; if ( off >= 0 || off < - MAX_BPF_STACK ) { verbose ( env , \"invalid<S2SV_blank>stack<S2SV_blank>off=%d<S2SV_blank>size=%d\\\\n\" , off , size ) ; return - EACCES ; } if ( env -> prog -> aux -> stack_depth < - off ) env -> prog -> aux -> stack_depth = - off ; if ( t == BPF_WRITE ) err = check_stack_write ( env , state , off , size , value_regno ) ; else err = check_stack_read ( env , state , off , size , value_regno ) ; } else if ( reg_is_pkt_pointer ( reg ) ) { if ( t == BPF_WRITE && ! may_access_direct_pkt_data ( env , NULL , t ) ) { verbose ( env , \"cannot<S2SV_blank>write<S2SV_blank>into<S2SV_blank>packet\\\\n\" ) ; return - EACCES ; } if ( t == BPF_WRITE && value_regno >= 0 && is_pointer_value ( env , value_regno ) ) { verbose ( env , \"R%d<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>into<S2SV_blank>packet\\\\n\" , value_regno ) ; return - EACCES ; } err = check_packet_access ( env , regno , off , size , false ) ; if ( ! err && t == BPF_READ && value_regno >= 0 ) mark_reg_unknown ( env , regs , value_regno ) ; } else { verbose ( env , \"R%d<S2SV_blank>invalid<S2SV_blank>mem<S2SV_blank>access<S2SV_blank>\\'%s\\'\\\\n\" , regno , reg_type_str [ reg -> type ] ) ; return - EACCES ; } if ( ! err && size < BPF_REG_SIZE && value_regno >= 0 && t == BPF_READ && regs [ value_regno ] . type == SCALAR_VALUE ) { <S2SV_StartBug> regs [ value_regno ] . var_off = <S2SV_EndBug> tnum_cast ( regs [ value_regno ] . var_off , size ) ; __update_reg_bounds ( & regs [ value_regno ] ) ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SCALAR_VALUE ) { coerce_reg_to_size ( & <S2SV_ModStart> [ value_regno ] , size <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15165\n\n```\nCWE-20 pcap_t * pcap_ng_check_header ( const uint8_t * magic , FILE * fp , u_int precision , char * errbuf , int * err ) { bpf_u_int32 magic_int ; size_t amt_read ; bpf_u_int32 total_length ; bpf_u_int32 byte_order_magic ; struct block_header * bhdrp ; struct section_header_block * shbp ; pcap_t * p ; int swapped = 0 ; struct pcap_ng_sf * ps ; int status ; struct block_cursor cursor ; struct interface_description_block * idbp ; * err = 0 ; memcpy ( & magic_int , magic , sizeof ( magic_int ) ) ; if ( magic_int != BT_SHB ) { return ( NULL ) ; } amt_read = fread ( & total_length , 1 , sizeof ( total_length ) , fp ) ; if ( amt_read < sizeof ( total_length ) ) { if ( ferror ( fp ) ) { pcap_fmt_errmsg_for_errno ( errbuf , PCAP_ERRBUF_SIZE , errno , \"error<S2SV_blank>reading<S2SV_blank>dump<S2SV_blank>file\" ) ; * err = 1 ; return ( NULL ) ; } return ( NULL ) ; } amt_read = fread ( & byte_order_magic , 1 , sizeof ( byte_order_magic ) , fp ) ; if ( amt_read < sizeof ( byte_order_magic ) ) { if ( ferror ( fp ) ) { pcap_fmt_errmsg_for_errno ( errbuf , PCAP_ERRBUF_SIZE , errno , \"error<S2SV_blank>reading<S2SV_blank>dump<S2SV_blank>file\" ) ; * err = 1 ; return ( NULL ) ; } return ( NULL ) ; } if ( byte_order_magic != BYTE_ORDER_MAGIC ) { byte_order_magic = SWAPLONG ( byte_order_magic ) ; if ( byte_order_magic != BYTE_ORDER_MAGIC ) { return ( NULL ) ; } swapped = 1 ; total_length = SWAPLONG ( total_length ) ; } if ( total_length < sizeof ( * bhdrp ) + sizeof ( * shbp ) + sizeof ( struct block_trailer ) || ( total_length > BT_SHB_INSANE_MAX ) ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , <S2SV_StartBug> \"Section<S2SV_blank>Header<S2SV_blank>Block<S2SV_blank>in<S2SV_blank>pcapng<S2SV_blank>dump<S2SV_blank>file<S2SV_blank>has<S2SV_blank>invalid<S2SV_blank>length<S2SV_blank>%\" PRIsize \"<S2SV_blank><<S2SV_blank>_%lu_<S2SV_blank><<S2SV_blank>%lu<S2SV_blank>(BT_SHB_INSANE_MAX)\" , <S2SV_EndBug> sizeof ( * bhdrp ) + sizeof ( * shbp ) + sizeof ( struct block_trailer ) , total_length , BT_SHB_INSANE_MAX ) ; * err = 1 ; return ( NULL ) ; } p = pcap_open_offline_common ( errbuf , sizeof ( struct pcap_ng_sf ) ) ; if ( p == NULL ) { * err = 1 ; return ( NULL ) ; } p -> swapped = swapped ; ps = p -> priv ; switch ( precision ) { case PCAP_TSTAMP_PRECISION_MICRO : ps -> user_tsresol = 1000000 ; break ; case PCAP_TSTAMP_PRECISION_NANO : ps -> user_tsresol = 1000000000 ; break ; default : pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"unknown<S2SV_blank>time<S2SV_blank>stamp<S2SV_blank>resolution<S2SV_blank>%u\" , precision ) ; free ( p ) ; * err = 1 ; return ( NULL ) ; } p -> opt . tstamp_precision = precision ; p -> bufsize = 2048 ; if ( p -> bufsize < total_length ) p -> bufsize = total_length ; p -> buffer = malloc ( p -> bufsize ) ; if ( p -> buffer == NULL ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"out<S2SV_blank>of<S2SV_blank>memory\" ) ; free ( p ) ; * err = 1 ; return ( NULL ) ; } ps -> max_blocksize = INITIAL_MAX_BLOCKSIZE ; bhdrp = ( struct block_header * ) p -> buffer ; shbp = ( struct section_header_block * ) ( ( u_char * ) p -> buffer + sizeof ( struct block_header ) ) ; bhdrp -> block_type = magic_int ; bhdrp -> total_length = total_length ; shbp -> byte_order_magic = byte_order_magic ; if ( read_bytes ( fp , ( u_char * ) p -> buffer + ( sizeof ( magic_int ) + sizeof ( total_length ) + sizeof ( byte_order_magic ) ) , total_length - ( sizeof ( magic_int ) + sizeof ( total_length ) + sizeof ( byte_order_magic ) ) , 1 , errbuf ) == - 1 ) goto fail ; if ( p -> swapped ) { shbp -> major_version = SWAPSHORT ( shbp -> major_version ) ; shbp -> minor_version = SWAPSHORT ( shbp -> minor_version ) ; } if ( ! ( shbp -> major_version == PCAP_NG_VERSION_MAJOR && shbp -> minor_version == PCAP_NG_VERSION_MINOR ) ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"unsupported<S2SV_blank>pcapng<S2SV_blank>savefile<S2SV_blank>version<S2SV_blank>%u.%u\" , shbp -> major_version , shbp -> minor_version ) ; goto fail ; } p -> version_major = shbp -> major_version ; p -> version_minor = shbp -> minor_version ; p -> opt . tstamp_precision = precision ; for ( ; ; ) { status = read_block ( fp , p , & cursor , errbuf ) ; if ( status == 0 ) { pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"the<S2SV_blank>capture<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>Interface<S2SV_blank>Description<S2SV_blank>Blocks\" ) ; goto fail ; } if ( status == - 1 ) goto fail ; switch ( cursor . block_type ) { case BT_IDB : idbp = get_from_block_data ( & cursor , sizeof ( * idbp ) , errbuf ) ; if ( idbp == NULL ) goto fail ; if ( p -> swapped ) { idbp -> linktype = SWAPSHORT ( idbp -> linktype ) ; idbp -> snaplen = SWAPLONG ( idbp -> snaplen ) ; } if ( ! add_interface ( p , & cursor , errbuf ) ) goto fail ; goto done ; case BT_EPB : case BT_SPB : case BT_PB : pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , \"the<S2SV_blank>capture<S2SV_blank>file<S2SV_blank>has<S2SV_blank>a<S2SV_blank>packet<S2SV_blank>block<S2SV_blank>before<S2SV_blank>any<S2SV_blank>Interface<S2SV_blank>Description<S2SV_blank>Blocks\" ) ; goto fail ; default : break ; } } done : p -> tzoff = 0 ; p -> linktype = linktype_to_dlt ( idbp -> linktype ) ; p -> snapshot = pcap_adjust_snapshot ( p -> linktype , idbp -> snaplen ) ; p -> linktype_ext = 0 ; if ( MAX_BLOCKSIZE_FOR_SNAPLEN ( max_snaplen_for_dlt ( p -> linktype ) ) > ps -> max_blocksize ) ps -> max_blocksize = MAX_BLOCKSIZE_FOR_SNAPLEN ( max_snaplen_for_dlt ( p -> linktype ) ) ; p -> next_packet_op = pcap_ng_next_packet ; p -> cleanup_op = pcap_ng_cleanup ; return ( p ) ; fail : free ( ps -> ifaces ) ; free ( p -> buffer ) ; free ( p ) ; * err = 1 ; return ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , \"Section<S2SV_blank>Header<S2SV_blank>Block<S2SV_blank>in<S2SV_blank>pcapng<S2SV_blank>dump<S2SV_blank>file<S2SV_blank>has<S2SV_blank>invalid<S2SV_blank>length<S2SV_blank>%\" PRIsize \"<S2SV_blank><<S2SV_blank>_%u_<S2SV_blank><<S2SV_blank>%u<S2SV_blank>(BT_SHB_INSANE_MAX)\" <S2SV_ModEnd> , sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10189\n\n```\nCWE-476 file_transfer_t * imcb_file_send_start ( struct im_connection * ic , char * handle , char * file_name , size_t file_size ) { bee_t * bee = ic -> bee ; bee_user_t * bu = bee_user_by_handle ( bee , ic , handle ) ; <S2SV_StartBug> if ( bee -> ui -> ft_in_start ) { <S2SV_EndBug> return bee -> ui -> ft_in_start ( bee , bu , file_name , file_size ) ; } else { return NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ui -> ft_in_start && bu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 GF_Err cat_multiple_files ( GF_ISOFile * dest , char * fileName , u32 import_flags , Double force_fps , u32 frames_per_sample , char * tmp_dir , Bool force_cat , Bool align_timelines , Bool allow_add_in_command ) { CATEnum cat_enum ; char * sep ; cat_enum . dest = dest ; cat_enum . import_flags = import_flags ; cat_enum . force_fps = force_fps ; cat_enum . frames_per_sample = frames_per_sample ; cat_enum . tmp_dir = tmp_dir ; cat_enum . force_cat = force_cat ; cat_enum . align_timelines = align_timelines ; cat_enum . allow_add_in_command = allow_add_in_command ; <S2SV_StartBug> strcpy ( cat_enum . szPath , fileName ) ; <S2SV_EndBug> sep = strrchr ( cat_enum . szPath , GF_PATH_SEPARATOR ) ; if ( ! sep ) sep = strrchr ( cat_enum . szPath , '/' ) ; if ( ! sep ) { strcpy ( cat_enum . szPath , \".\" ) ; <S2SV_StartBug> strcpy ( cat_enum . szRad1 , fileName ) ; <S2SV_EndBug> } else { <S2SV_StartBug> strcpy ( cat_enum . szRad1 , sep + 1 ) ; <S2SV_EndBug> sep [ 0 ] = 0 ; } <S2SV_StartBug> sep = strchr ( cat_enum . szRad1 , '*' ) ; <S2SV_EndBug> <S2SV_StartBug> strcpy ( cat_enum . szRad2 , sep + 1 ) ; <S2SV_EndBug> sep [ 0 ] = 0 ; <S2SV_StartBug> sep = strchr ( cat_enum . szRad2 , '%' ) ; <S2SV_EndBug> if ( ! sep ) sep = strchr ( cat_enum . szRad2 , '#' ) ; if ( ! sep ) sep = strchr ( cat_enum . szRad2 , ':' ) ; strcpy ( cat_enum . szOpt , \"\" ) ; <S2SV_StartBug> if ( sep ) { <S2SV_EndBug> strcpy ( cat_enum . szOpt , sep ) ; sep [ 0 ] = 0 ; } return gf_enum_directory ( cat_enum . szPath , 0 , cat_enumerate , & cat_enum , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = allow_add_in_command ; if ( strlen ( fileName ) >= sizeof <S2SV_ModEnd> ( cat_enum . <S2SV_ModStart> cat_enum . szPath ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"File<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" , fileName ) ) ; return GF_NOT_SUPPORTED ; } strcpy ( cat_enum . szPath <S2SV_ModStart> \".\" ) ; if ( strlen ( fileName ) >= sizeof <S2SV_ModEnd> ( cat_enum . <S2SV_ModStart> cat_enum . szRad1 ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"File<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" , fileName ) ) ; return GF_NOT_SUPPORTED ; } strcpy ( cat_enum . szRad1 <S2SV_ModStart> } else { if ( strlen ( <S2SV_ModEnd> sep + 1 <S2SV_ModStart> + 1 ) >= sizeof <S2SV_ModEnd> ( cat_enum . <S2SV_ModStart> cat_enum . szRad1 ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"File<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" , ( <S2SV_ModEnd> sep + 1 <S2SV_ModStart> + 1 ) ) ) ; return GF_NOT_SUPPORTED ; } strcpy ( cat_enum . szRad1 , sep + 1 ) <S2SV_ModStart> = 0 ; } <S2SV_ModStart> ( cat_enum . szRad1 , '*' ) ; if ( strlen ( sep + 1 ) >= sizeof ( cat_enum . szRad2 ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"File<S2SV_blank>name<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long.\\\\n\" , ( sep + 1 ) ) ) ; return GF_NOT_SUPPORTED ; } strcpy ( cat_enum . szRad2 , sep + 1 ) ; sep [ 0 ] = 0 ; sep = strchr ( cat_enum . szRad2 <S2SV_ModEnd> , '%' ) <S2SV_ModStart> sep ) { if ( strlen ( sep ) >= sizeof ( cat_enum . szOpt ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_CONTAINER , ( \"Invalid<S2SV_blank>option:<S2SV_blank>%s.\\\\n\" , sep ) ) ; return GF_NOT_SUPPORTED ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14461\n\n```\nCWE-125 static int ldp_tlv_print ( netdissect_options * ndo , register const u_char * tptr , u_short msg_tlen ) { struct ldp_tlv_header { uint8_t type [ 2 ] ; uint8_t length [ 2 ] ; } ; const struct ldp_tlv_header * ldp_tlv_header ; u_short tlv_type , tlv_len , tlv_tlen , af , ft_flags ; u_char fec_type ; u_int ui , vc_info_len , vc_info_tlv_type , vc_info_tlv_len , idx ; char buf [ 100 ] ; int i ; ldp_tlv_header = ( const struct ldp_tlv_header * ) tptr ; ND_TCHECK ( * ldp_tlv_header ) ; tlv_len = EXTRACT_16BITS ( ldp_tlv_header -> length ) ; if ( tlv_len + 4 > msg_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>TLV<S2SV_blank>contents<S2SV_blank>go<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>message\" ) ) ; return 0 ; } tlv_tlen = tlv_len ; tlv_type = LDP_MASK_TLV_TYPE ( EXTRACT_16BITS ( ldp_tlv_header -> type ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(0x%04x),<S2SV_blank>length:<S2SV_blank>%u,<S2SV_blank>Flags:<S2SV_blank>[%s<S2SV_blank>and<S2SV_blank>%s<S2SV_blank>forward<S2SV_blank>if<S2SV_blank>unknown]\" , tok2str ( ldp_tlv_values , \"Unknown\" , tlv_type ) , tlv_type , tlv_len , LDP_MASK_U_BIT ( EXTRACT_16BITS ( & ldp_tlv_header -> type ) ) ? \"continue<S2SV_blank>processing\" : \"ignore\" , LDP_MASK_F_BIT ( EXTRACT_16BITS ( & ldp_tlv_header -> type ) ) ? \"do\" : \"don\\'t\" ) ) ; tptr += sizeof ( struct ldp_tlv_header ) ; switch ( tlv_type ) { case LDP_TLV_COMMON_HELLO : TLV_TCHECK ( 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Hold<S2SV_blank>Time:<S2SV_blank>%us,<S2SV_blank>Flags:<S2SV_blank>[%s<S2SV_blank>Hello%s]\" , EXTRACT_16BITS ( tptr ) , ( EXTRACT_16BITS ( tptr + 2 ) & 0x8000 ) ? \"Targeted\" : \"Link\" , ( EXTRACT_16BITS ( tptr + 2 ) & 0x4000 ) ? \",<S2SV_blank>Request<S2SV_blank>for<S2SV_blank>targeted<S2SV_blank>Hellos\" : \"\" ) ) ; break ; case LDP_TLV_IPV4_TRANSPORT_ADDR : TLV_TCHECK ( 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Transport<S2SV_blank>Address:<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case LDP_TLV_IPV6_TRANSPORT_ADDR : TLV_TCHECK ( 16 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Transport<S2SV_blank>Address:<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr ) ) ) ; break ; case LDP_TLV_CONFIG_SEQ_NUMBER : TLV_TCHECK ( 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sequence<S2SV_blank>Number:<S2SV_blank>%u\" , EXTRACT_32BITS ( tptr ) ) ) ; break ; case LDP_TLV_ADDRESS_LIST : TLV_TCHECK ( LDP_TLV_ADDRESS_LIST_AFNUM_LEN ) ; af = EXTRACT_16BITS ( tptr ) ; tptr += LDP_TLV_ADDRESS_LIST_AFNUM_LEN ; tlv_tlen -= LDP_TLV_ADDRESS_LIST_AFNUM_LEN ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Address<S2SV_blank>Family:<S2SV_blank>%s,<S2SV_blank>addresses\" , tok2str ( af_values , \"Unknown<S2SV_blank>(%u)\" , af ) ) ) ; switch ( af ) { case AFNUM_INET : while ( tlv_tlen >= sizeof ( struct in_addr ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlv_tlen -= sizeof ( struct in_addr ) ; tptr += sizeof ( struct in_addr ) ; } break ; case AFNUM_INET6 : while ( tlv_tlen >= sizeof ( struct in6_addr ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tlv_tlen -= sizeof ( struct in6_addr ) ; tptr += sizeof ( struct in6_addr ) ; } break ; default : break ; } break ; case LDP_TLV_COMMON_SESSION : TLV_TCHECK ( 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Version:<S2SV_blank>%u,<S2SV_blank>Keepalive:<S2SV_blank>%us,<S2SV_blank>Flags:<S2SV_blank>[Downstream<S2SV_blank>%s,<S2SV_blank>Loop<S2SV_blank>Detection<S2SV_blank>%s]\" , EXTRACT_16BITS ( tptr ) , EXTRACT_16BITS ( tptr + 2 ) , ( EXTRACT_16BITS ( tptr + 6 ) & 0x8000 ) ? \"On<S2SV_blank>Demand\" : \"Unsolicited\" , ( EXTRACT_16BITS ( tptr + 6 ) & 0x4000 ) ? \"Enabled\" : \"Disabled\" ) ) ; break ; case LDP_TLV_FEC : TLV_TCHECK ( 1 ) ; fec_type = * tptr ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>FEC<S2SV_blank>(0x%02x)\" , tok2str ( ldp_fec_values , \"Unknown\" , fec_type ) , fec_type ) ) ; tptr += 1 ; tlv_tlen -= 1 ; switch ( fec_type ) { case LDP_FEC_WILDCARD : break ; case LDP_FEC_PREFIX : TLV_TCHECK ( 2 ) ; af = EXTRACT_16BITS ( tptr ) ; tptr += LDP_TLV_ADDRESS_LIST_AFNUM_LEN ; tlv_tlen -= LDP_TLV_ADDRESS_LIST_AFNUM_LEN ; if ( af == AFNUM_INET ) { i = decode_prefix4 ( ndo , tptr , tlv_tlen , buf , sizeof ( buf ) ) ; if ( i == - 2 ) goto trunc ; if ( i == - 3 ) ND_PRINT ( ( ndo , \":<S2SV_blank>IPv4<S2SV_blank>prefix<S2SV_blank>(goes<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>TLV)\" ) ) ; else if ( i == - 1 ) ND_PRINT ( ( ndo , \":<S2SV_blank>IPv4<S2SV_blank>prefix<S2SV_blank>(invalid<S2SV_blank>length)\" ) ) ; else ND_PRINT ( ( ndo , \":<S2SV_blank>IPv4<S2SV_blank>prefix<S2SV_blank>%s\" , buf ) ) ; } else if ( af == AFNUM_INET6 ) { i = decode_prefix6 ( ndo , tptr , tlv_tlen , buf , sizeof ( buf ) ) ; if ( i == - 2 ) goto trunc ; if ( i == - 3 ) ND_PRINT ( ( ndo , \":<S2SV_blank>IPv4<S2SV_blank>prefix<S2SV_blank>(goes<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>TLV)\" ) ) ; else if ( i == - 1 ) ND_PRINT ( ( ndo , \":<S2SV_blank>IPv6<S2SV_blank>prefix<S2SV_blank>(invalid<S2SV_blank>length)\" ) ) ; else ND_PRINT ( ( ndo , \":<S2SV_blank>IPv6<S2SV_blank>prefix<S2SV_blank>%s\" , buf ) ) ; } else ND_PRINT ( ( ndo , \":<S2SV_blank>Address<S2SV_blank>family<S2SV_blank>%u<S2SV_blank>prefix\" , af ) ) ; break ; case LDP_FEC_HOSTADDRESS : break ; case LDP_FEC_MARTINI_VC : TLV_TCHECK ( 7 ) ; vc_info_len = * ( tptr + 2 ) ; if ( vc_info_len == 0 ) { ND_PRINT ( ( ndo , \":<S2SV_blank>%s,<S2SV_blank>%scontrol<S2SV_blank>word,<S2SV_blank>group-ID<S2SV_blank>%u,<S2SV_blank>VC-info-length:<S2SV_blank>%u\" , tok2str ( mpls_pw_types_values , \"Unknown\" , EXTRACT_16BITS ( tptr ) & 0x7fff ) , EXTRACT_16BITS ( tptr ) & 0x8000 ? \"\" : \"no<S2SV_blank>\" , EXTRACT_32BITS ( tptr + 3 ) , vc_info_len ) ) ; break ; } TLV_TCHECK ( 11 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>%s,<S2SV_blank>%scontrol<S2SV_blank>word,<S2SV_blank>group-ID<S2SV_blank>%u,<S2SV_blank>VC-ID<S2SV_blank>%u,<S2SV_blank>VC-info-length:<S2SV_blank>%u\" , tok2str ( mpls_pw_types_values , \"Unknown\" , EXTRACT_16BITS ( tptr ) & 0x7fff ) , EXTRACT_16BITS ( tptr ) & 0x8000 ? \"\" : \"no<S2SV_blank>\" , EXTRACT_32BITS ( tptr + 3 ) , EXTRACT_32BITS ( tptr + 7 ) , vc_info_len ) ) ; if ( vc_info_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(invalid,<S2SV_blank><<S2SV_blank>4\" ) ) ; return ( tlv_len + 4 ) ; } vc_info_len -= 4 ; tptr += 11 ; tlv_tlen -= 11 ; TLV_TCHECK ( vc_info_len ) ; while ( vc_info_len > 2 ) { vc_info_tlv_type = * tptr ; vc_info_tlv_len = * ( tptr + 1 ) ; if ( vc_info_tlv_len < 2 ) break ; if ( vc_info_len < vc_info_tlv_len ) break ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tInterface<S2SV_blank>Parameter:<S2SV_blank>%s<S2SV_blank>(0x%02x),<S2SV_blank>len<S2SV_blank>%u\" , tok2str ( ldp_fec_martini_ifparm_values , \"Unknown\" , vc_info_tlv_type ) , vc_info_tlv_type , vc_info_tlv_len ) ) ; switch ( vc_info_tlv_type ) { case LDP_FEC_MARTINI_IFPARM_MTU : ND_PRINT ( ( ndo , \":<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 2 ) ) ) ; break ; case LDP_FEC_MARTINI_IFPARM_DESC : ND_PRINT ( ( ndo , \":<S2SV_blank>\" ) ) ; for ( idx = 2 ; idx < vc_info_tlv_len ; idx ++ ) safeputchar ( ndo , * ( tptr + idx ) ) ; break ; case LDP_FEC_MARTINI_IFPARM_VCCV : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>Control<S2SV_blank>Channels<S2SV_blank>(0x%02x)<S2SV_blank>=<S2SV_blank>[%s]\" , * ( tptr + 2 ) , bittok2str ( ldp_fec_martini_ifparm_vccv_cc_values , \"none\" , * ( tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>CV<S2SV_blank>Types<S2SV_blank>(0x%02x)<S2SV_blank>=<S2SV_blank>[%s]\" , * ( tptr + 3 ) , bittok2str ( ldp_fec_martini_ifparm_vccv_cv_values , \"none\" , * ( tptr + 3 ) ) ) ) ; break ; default : print_unknown_data ( ndo , tptr + 2 , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>\" , vc_info_tlv_len - 2 ) ; break ; } vc_info_len -= vc_info_tlv_len ; tptr += vc_info_tlv_len ; } break ; } break ; case LDP_TLV_GENERIC_LABEL : TLV_TCHECK ( 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Label:<S2SV_blank>%u\" , EXTRACT_32BITS ( tptr ) & 0xfffff ) ) ; break ; case LDP_TLV_STATUS : TLV_TCHECK ( 8 ) ; ui = EXTRACT_32BITS ( tptr ) ; tptr += 4 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Status:<S2SV_blank>0x%02x,<S2SV_blank>Flags:<S2SV_blank>[%s<S2SV_blank>and<S2SV_blank>%s<S2SV_blank>forward]\" , ui & 0x3fffffff , ui & 0x80000000 ? \"Fatal<S2SV_blank>error\" : \"Advisory<S2SV_blank>Notification\" , ui & 0x40000000 ? \"do\" : \"don\\'t\" ) ) ; ui = EXTRACT_32BITS ( tptr ) ; tptr += 4 ; if ( ui ) ND_PRINT ( ( ndo , \",<S2SV_blank>causing<S2SV_blank>Message<S2SV_blank>ID:<S2SV_blank>0x%08x\" , ui ) ) ; break ; case LDP_TLV_FT_SESSION : <S2SV_StartBug> TLV_TCHECK ( 8 ) ; <S2SV_EndBug> ft_flags = EXTRACT_16BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%sReconnect,<S2SV_blank>%sSave<S2SV_blank>State,<S2SV_blank>%sAll-Label<S2SV_blank>Protection,<S2SV_blank>%s<S2SV_blank>Checkpoint,<S2SV_blank>%sRe-Learn<S2SV_blank>State]\" , ft_flags & 0x8000 ? \"\" : \"No<S2SV_blank>\" , ft_flags & 0x8 ? \"\" : \"Don\\'t<S2SV_blank>\" , ft_flags & 0x4 ? \"\" : \"No<S2SV_blank>\" , ft_flags & 0x2 ? \"Sequence<S2SV_blank>Numbered<S2SV_blank>Label\" : \"All<S2SV_blank>Labels\" , ft_flags & 0x1 ? \"\" : \"Don\\'t<S2SV_blank>\" ) ) ; tptr += 4 ; ui = EXTRACT_32BITS ( tptr ) ; if ( ui ) ND_PRINT ( ( ndo , \",<S2SV_blank>Reconnect<S2SV_blank>Timeout:<S2SV_blank>%ums\" , ui ) ) ; tptr += 4 ; ui = EXTRACT_32BITS ( tptr ) ; if ( ui ) ND_PRINT ( ( ndo , \",<S2SV_blank>Recovery<S2SV_blank>Time:<S2SV_blank>%ums\" , ui ) ) ; break ; case LDP_TLV_MTU : TLV_TCHECK ( 2 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MTU:<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr ) ) ) ; break ; case LDP_TLV_HOP_COUNT : case LDP_TLV_PATH_VECTOR : case LDP_TLV_ATM_LABEL : case LDP_TLV_FR_LABEL : case LDP_TLV_EXTD_STATUS : case LDP_TLV_RETURNED_PDU : case LDP_TLV_RETURNED_MSG : case LDP_TLV_ATM_SESSION_PARM : case LDP_TLV_FR_SESSION_PARM : case LDP_TLV_LABEL_REQUEST_MSG_ID : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_tlen ) ; break ; } return ( tlv_len + 4 ) ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>exceeded<S2SV_blank>snapshot\" ) ) ; <S2SV_EndBug> return 0 ; badtlv : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>TLV<S2SV_blank>contents<S2SV_blank>go<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>TLV\" ) ) ; return ( tlv_len + 4 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : TLV_TCHECK ( 12 <S2SV_ModEnd> ) ; ft_flags <S2SV_ModStart> ( ndo , \"%s\" , tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2549\n\n```\nCWE-20 static int snd_hrtimer_start ( struct snd_timer * t ) { struct snd_hrtimer * stime = t -> private_data ; atomic_set ( & stime -> running , 0 ) ; <S2SV_StartBug> hrtimer_cancel ( & stime -> hrt ) ; <S2SV_EndBug> hrtimer_start ( & stime -> hrt , ns_to_ktime ( t -> sticks * resolution ) , HRTIMER_MODE_REL ) ; atomic_set ( & stime -> running , 1 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; hrtimer_try_to_cancel <S2SV_ModEnd> ( & stime\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7533\n\n```\nCWE-362 int vfs_rename ( struct inode * old_dir , struct dentry * old_dentry , struct inode * new_dir , struct dentry * new_dentry , struct inode * * delegated_inode , unsigned int flags ) { int error ; bool is_dir = d_is_dir ( old_dentry ) ; <S2SV_StartBug> const unsigned char * old_name ; <S2SV_EndBug> struct inode * source = old_dentry -> d_inode ; struct inode * target = new_dentry -> d_inode ; bool new_is_dir = false ; unsigned max_links = new_dir -> i_sb -> s_max_links ; <S2SV_StartBug> if ( source == target ) <S2SV_EndBug> return 0 ; error = may_delete ( old_dir , old_dentry , is_dir ) ; if ( error ) return error ; if ( ! target ) { error = may_create ( new_dir , new_dentry ) ; } else { new_is_dir = d_is_dir ( new_dentry ) ; if ( ! ( flags & RENAME_EXCHANGE ) ) error = may_delete ( new_dir , new_dentry , is_dir ) ; else error = may_delete ( new_dir , new_dentry , new_is_dir ) ; } if ( error ) return error ; if ( ! old_dir -> i_op -> rename ) return - EPERM ; if ( new_dir != old_dir ) { if ( is_dir ) { error = inode_permission ( source , MAY_WRITE ) ; if ( error ) return error ; } if ( ( flags & RENAME_EXCHANGE ) && new_is_dir ) { error = inode_permission ( target , MAY_WRITE ) ; if ( error ) return error ; } } error = security_inode_rename ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; if ( error ) return error ; <S2SV_StartBug> old_name = fsnotify_oldname_init ( old_dentry -> d_name . name ) ; <S2SV_EndBug> dget ( new_dentry ) ; if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) lock_two_nondirectories ( source , target ) ; else if ( target ) inode_lock ( target ) ; error = - EBUSY ; if ( is_local_mountpoint ( old_dentry ) || is_local_mountpoint ( new_dentry ) ) goto out ; if ( max_links && new_dir != old_dir ) { error = - EMLINK ; if ( is_dir && ! new_is_dir && new_dir -> i_nlink >= max_links ) goto out ; if ( ( flags & RENAME_EXCHANGE ) && ! is_dir && new_is_dir && old_dir -> i_nlink >= max_links ) goto out ; } if ( is_dir && ! ( flags & RENAME_EXCHANGE ) && target ) shrink_dcache_parent ( new_dentry ) ; if ( ! is_dir ) { error = try_break_deleg ( source , delegated_inode ) ; if ( error ) goto out ; } if ( target && ! new_is_dir ) { error = try_break_deleg ( target , delegated_inode ) ; if ( error ) goto out ; } error = old_dir -> i_op -> rename ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; if ( error ) goto out ; if ( ! ( flags & RENAME_EXCHANGE ) && target ) { if ( is_dir ) target -> i_flags |= S_DEAD ; dont_mount ( new_dentry ) ; detach_mounts ( new_dentry ) ; } if ( ! ( old_dir -> i_sb -> s_type -> fs_flags & FS_RENAME_DOES_D_MOVE ) ) { if ( ! ( flags & RENAME_EXCHANGE ) ) d_move ( old_dentry , new_dentry ) ; else d_exchange ( old_dentry , new_dentry ) ; } out : if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) unlock_two_nondirectories ( source , target ) ; else if ( target ) inode_unlock ( target ) ; dput ( new_dentry ) ; if ( ! error ) { fsnotify_move ( old_dir , new_dir , old_name , is_dir , ! ( flags & RENAME_EXCHANGE ) ? target : NULL , old_dentry ) ; if ( flags & RENAME_EXCHANGE ) { fsnotify_move ( new_dir , old_dir , old_dentry -> d_name . name , new_is_dir , NULL , new_dentry ) ; } } fsnotify_oldname_free ( old_name ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> old_dentry ) ; <S2SV_ModEnd> struct inode * <S2SV_ModStart> -> s_max_links ; struct name_snapshot old_name ; <S2SV_ModStart> return error ; take_dentry_name_snapshot ( & old_name , old_dentry ) ; dget ( new_dentry ) ; if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) lock_two_nondirectories ( source , target ) ; else if ( target ) inode_lock ( target ) ; error = - EBUSY ; if ( is_local_mountpoint ( old_dentry ) || is_local_mountpoint ( new_dentry ) ) goto out ; if ( max_links && new_dir != old_dir ) { error = - EMLINK ; if ( is_dir && ! new_is_dir && new_dir -> i_nlink >= max_links ) goto out ; if ( ( flags & RENAME_EXCHANGE ) && ! is_dir && new_is_dir && old_dir -> i_nlink >= max_links ) goto out ; } if ( is_dir && ! ( flags & RENAME_EXCHANGE ) && target ) shrink_dcache_parent ( new_dentry ) ; if ( ! is_dir ) { error = try_break_deleg ( source , delegated_inode ) ; if ( error ) goto out ; } if ( target && ! new_is_dir ) { error = try_break_deleg ( target , delegated_inode ) ; if ( error ) goto out ; } error = old_dir -> i_op -> rename ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; if ( error ) goto out ; if ( ! ( flags & RENAME_EXCHANGE ) && target ) { if ( is_dir ) target -> i_flags |= S_DEAD ; dont_mount ( new_dentry ) ; detach_mounts ( new_dentry ) ; } if ( ! ( old_dir -> i_sb -> s_type -> fs_flags & FS_RENAME_DOES_D_MOVE ) ) { if ( ! ( flags & RENAME_EXCHANGE ) ) d_move ( old_dentry , new_dentry ) ; else d_exchange ( old_dentry , new_dentry ) ; } out : if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) unlock_two_nondirectories ( source , target ) ; else if ( target ) inode_unlock ( target ) ; dput ( new_dentry ) ; if ( ! error ) { fsnotify_move ( old_dir , new_dir , old_name . name , is_dir , ! ( flags & RENAME_EXCHANGE ) ? target : NULL , old_dentry ) ; if ( flags & RENAME_EXCHANGE ) { fsnotify_move ( new_dir , old_dir , <S2SV_ModEnd> old_dentry -> d_name <S2SV_ModStart> d_name . name , new_is_dir , NULL , new_dentry ) ; } } release_dentry_name_snapshot ( & old_name <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5357\n\n```\nCWE-20 static gboolean netscreen_read ( wtap * wth , int * err , gchar * * err_info , gint64 * data_offset ) { gint64 offset ; <S2SV_StartBug> int pkt_len ; <S2SV_EndBug> <S2SV_StartBug> char line [ NETSCREEN_LINE_LENGTH ] ; <S2SV_EndBug> char cap_int [ NETSCREEN_MAX_INT_NAME_LENGTH ] ; gboolean cap_dir ; char cap_dst [ 13 ] ; offset = netscreen_seek_next_packet ( wth , err , err_info , line ) ; if ( offset < 0 ) return FALSE ; <S2SV_StartBug> pkt_len = parse_netscreen_rec_hdr ( & wth -> phdr , line , cap_int , & cap_dir , <S2SV_EndBug> cap_dst , err , err_info ) ; if ( pkt_len == - 1 ) return FALSE ; <S2SV_StartBug> if ( ! parse_netscreen_hex_dump ( wth -> fh , pkt_len , cap_int , <S2SV_EndBug> <S2SV_StartBug> cap_dst , & wth -> phdr , wth -> frame_buffer , err , err_info ) ) <S2SV_EndBug> return FALSE ; if ( wth -> file_encap == WTAP_ENCAP_UNKNOWN ) wth -> file_encap = wth -> phdr . pkt_encap ; else { if ( wth -> file_encap != wth -> phdr . pkt_encap ) wth -> file_encap = WTAP_ENCAP_PER_PACKET ; } * data_offset = offset ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gint64 offset ; <S2SV_ModEnd> char line [ <S2SV_ModStart> line [ NETSCREEN_LINE_LENGTH <S2SV_ModEnd> ] ; offset <S2SV_ModStart> return FALSE ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! parse_netscreen_packet <S2SV_ModEnd> ( wth -> <S2SV_ModStart> wth -> fh <S2SV_ModEnd> , & wth <S2SV_ModStart> wth -> frame_buffer , line\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4127\n\n```\nCWE-264 static int flakey_ioctl ( struct dm_target * ti , unsigned int cmd , unsigned long arg ) { struct flakey_c * fc = ti -> private ; <S2SV_StartBug> return __blkdev_driver_ioctl ( fc -> dev -> bdev , fc -> dev -> mode , cmd , arg ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private ; struct dm_dev * dev = fc -> dev ; int r = 0 ; if <S2SV_ModEnd> ( fc -> <S2SV_ModStart> ( fc -> start || ti -> len != i_size_read ( dev -> bdev -> bd_inode ) >> SECTOR_SHIFT ) r = scsi_verify_blk_ioctl ( NULL , cmd ) ; return r ? : __blkdev_driver_ioctl ( <S2SV_ModStart> -> bdev , <S2SV_ModEnd> dev -> mode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9794\n\n```\nCWE-362 void snd_pcm_period_elapsed ( struct snd_pcm_substream * substream ) { struct snd_pcm_runtime * runtime ; unsigned long flags ; if ( PCM_RUNTIME_CHECK ( substream ) ) return ; runtime = substream -> runtime ; snd_pcm_stream_lock_irqsave ( substream , flags ) ; if ( ! snd_pcm_running ( substream ) || snd_pcm_update_hw_ptr0 ( substream , 1 ) < 0 ) goto _end ; # ifdef CONFIG_SND_PCM_TIMER if ( substream -> timer_running ) snd_timer_interrupt ( substream -> timer , 1 ) ; # endif _end : <S2SV_StartBug> snd_pcm_stream_unlock_irqrestore ( substream , flags ) ; <S2SV_EndBug> kill_fasync ( & runtime -> fasync , SIGIO , POLL_IN ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif _end : <S2SV_ModEnd> kill_fasync ( & <S2SV_ModStart> POLL_IN ) ; snd_pcm_stream_unlock_irqrestore ( substream , flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 <S2SV_StartBug> void bpf_map_inc ( struct bpf_map * map , bool uref ) <S2SV_EndBug> { <S2SV_StartBug> atomic_inc ( & map -> refcnt ) ; <S2SV_EndBug> if ( uref ) atomic_inc ( & map -> usercnt ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> struct bpf_map * <S2SV_ModEnd> bpf_map_inc ( struct <S2SV_ModStart> uref ) { if ( atomic_inc_return ( & map -> refcnt ) > BPF_MAX_REFCNT ) { atomic_dec <S2SV_ModEnd> ( & map <S2SV_ModStart> refcnt ) ; return ERR_PTR ( - EBUSY ) ; } <S2SV_ModStart> usercnt ) ; return map ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4299\n\n```\nCWE-264 static int persistent_prepare_exception ( struct dm_exception_store * store , struct dm_exception * e ) { <S2SV_StartBug> struct pstore * ps = get_info ( store ) ; <S2SV_EndBug> uint32_t stride ; chunk_t next_free ; sector_t size = get_dev_size ( dm_snap_cow ( store -> snap ) -> bdev ) ; if ( size < ( ( ps -> next_free + 1 ) * store -> chunk_size ) ) return - ENOSPC ; e -> new_chunk = ps -> next_free ; <S2SV_StartBug> stride = ( ps -> exceptions_per_area + 1 ) ; <S2SV_EndBug> next_free = ++ ps -> next_free ; if ( sector_div ( next_free , stride ) == 1 ) <S2SV_StartBug> ps -> next_free ++ ; <S2SV_EndBug> atomic_inc ( & ps -> pending_count ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( store ) <S2SV_ModEnd> ; sector_t size <S2SV_ModStart> -> next_free ; <S2SV_ModEnd> ps -> next_free <S2SV_ModStart> -> next_free ++ ; skip_metadata ( ps )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void yv12_extend_frame_top_c ( YV12_BUFFER_CONFIG * ybf ) { int i ; unsigned char * src_ptr1 ; unsigned char * dest_ptr1 ; unsigned int Border ; int plane_stride ; Border = ybf -> border ; plane_stride = ybf -> y_stride ; src_ptr1 = ybf -> y_buffer - Border ; dest_ptr1 = src_ptr1 - ( Border * plane_stride ) ; for ( i = 0 ; i < ( int ) Border ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dest_ptr1 , src_ptr1 , plane_stride ) ; <S2SV_EndBug> dest_ptr1 += plane_stride ; } plane_stride = ybf -> uv_stride ; Border /= 2 ; src_ptr1 = ybf -> u_buffer - Border ; dest_ptr1 = src_ptr1 - ( Border * plane_stride ) ; for ( i = 0 ; i < ( int ) ( Border ) ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dest_ptr1 , src_ptr1 , plane_stride ) ; <S2SV_EndBug> dest_ptr1 += plane_stride ; } src_ptr1 = ybf -> v_buffer - Border ; dest_ptr1 = src_ptr1 - ( Border * plane_stride ) ; for ( i = 0 ; i < ( int ) ( Border ) ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dest_ptr1 , src_ptr1 , plane_stride ) ; <S2SV_EndBug> dest_ptr1 += plane_stride ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dest_ptr1 , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dest_ptr1 , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dest_ptr1 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8069\n\n```\nCWE-119 static int get_registers ( rtl8150_t * dev , u16 indx , u16 size , void * data ) { <S2SV_StartBug> return usb_control_msg ( dev -> udev , usb_rcvctrlpipe ( dev -> udev , 0 ) , <S2SV_EndBug> RTL8150_REQ_GET_REGS , RTL8150_REQT_READ , <S2SV_StartBug> indx , 0 , data , size , 500 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { void * buf ; int ret ; buf = kmalloc ( size , GFP_NOIO ) ; if ( ! buf ) return - ENOMEM ; ret = <S2SV_ModEnd> usb_control_msg ( dev <S2SV_ModStart> , 0 , buf <S2SV_ModEnd> , size , <S2SV_ModStart> 500 ) ; if ( ret > 0 && ret <= size ) memcpy ( data , buf , ret ) ; kfree ( buf ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int fstring_find_expr ( const char * * str , const char * end , int raw , int recurse_lvl , expr_ty * expression , struct compiling * c , const node * n ) { const char * expr_start ; const char * expr_end ; expr_ty simple_expression ; expr_ty format_spec = NULL ; int conversion = - 1 ; char quote_char = 0 ; int string_type = 0 ; Py_ssize_t nested_depth = 0 ; char parenstack [ MAXLEVEL ] ; if ( recurse_lvl >= 2 ) { ast_error ( c , n , \"f-string:<S2SV_blank>expressions<S2SV_blank>nested<S2SV_blank>too<S2SV_blank>deeply\" ) ; return - 1 ; } assert ( * * str == '{' ) ; * str += 1 ; expr_start = * str ; for ( ; * str < end ; ( * str ) ++ ) { char ch ; assert ( nested_depth >= 0 ) ; assert ( * str >= expr_start && * str < end ) ; if ( quote_char ) assert ( string_type == 1 || string_type == 3 ) ; else assert ( string_type == 0 ) ; ch = * * str ; if ( ch == '\\\\\\\\' ) { ast_error ( c , n , \"f-string<S2SV_blank>expression<S2SV_blank>part<S2SV_blank>\" \"cannot<S2SV_blank>include<S2SV_blank>a<S2SV_blank>backslash\" ) ; return - 1 ; } if ( quote_char ) { if ( ch == quote_char ) { if ( string_type == 3 ) { if ( * str + 2 < end && * ( * str + 1 ) == ch && * ( * str + 2 ) == ch ) { * str += 2 ; string_type = 0 ; quote_char = 0 ; continue ; } } else { quote_char = 0 ; string_type = 0 ; continue ; } } } else if ( ch == '\\\\'' || ch == \\'\"\\' ) { if ( * str + 2 < end && * ( * str + 1 ) == ch && * ( * str + 2 ) == ch ) { string_type = 3 ; * str += 2 ; } else { string_type = 1 ; } quote_char = ch ; } else if ( ch == '[' || ch == '{' || ch == '(' ) { if ( nested_depth >= MAXLEVEL ) { ast_error ( c , n , \"f-string:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>nested<S2SV_blank>parenthesis\" ) ; return - 1 ; } parenstack [ nested_depth ] = ch ; nested_depth ++ ; } else if ( ch == '#' ) { ast_error ( c , n , \"f-string<S2SV_blank>expression<S2SV_blank>part<S2SV_blank>cannot<S2SV_blank>include<S2SV_blank>\\'#\\'\" ) ; return - 1 ; } else if ( nested_depth == 0 && ( ch == '!' || ch == ':' || ch == '}' ) ) { if ( ch == '!' && * str + 1 < end && * ( * str + 1 ) == '=' ) { continue ; } break ; } else if ( ch == ']' || ch == '}' || ch == ')' ) { if ( ! nested_depth ) { ast_error ( c , n , \"f-string:<S2SV_blank>unmatched<S2SV_blank>\\'%c\\'\" , ch ) ; return - 1 ; } nested_depth -- ; int opening = parenstack [ nested_depth ] ; if ( ! ( ( opening == '(' && ch == ')' ) || ( opening == '[' && ch == ']' ) || ( opening == '{' && ch == '}' ) ) ) { ast_error ( c , n , \"f-string:<S2SV_blank>closing<S2SV_blank>parenthesis<S2SV_blank>\\'%c\\'<S2SV_blank>\" \"does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>opening<S2SV_blank>parenthesis<S2SV_blank>\\'%c\\'\" , ch , opening ) ; return - 1 ; } } else { } } expr_end = * str ; if ( quote_char ) { ast_error ( c , n , \"f-string:<S2SV_blank>unterminated<S2SV_blank>string\" ) ; return - 1 ; } if ( nested_depth ) { int opening = parenstack [ nested_depth - 1 ] ; ast_error ( c , n , \"f-string:<S2SV_blank>unmatched<S2SV_blank>\\'%c\\'\" , opening ) ; return - 1 ; } if ( * str >= end ) goto unexpected_end_of_string ; simple_expression = fstring_compile_expr ( expr_start , expr_end , c , n ) ; if ( ! simple_expression ) return - 1 ; if ( * * str == '!' ) { * str += 1 ; if ( * str >= end ) goto unexpected_end_of_string ; conversion = * * str ; * str += 1 ; if ( ! ( conversion == 's' || conversion == 'r' || conversion == 'a' ) ) { ast_error ( c , n , \"f-string:<S2SV_blank>invalid<S2SV_blank>conversion<S2SV_blank>character:<S2SV_blank>\" \"expected<S2SV_blank>\\'s\\',<S2SV_blank>\\'r\\',<S2SV_blank>or<S2SV_blank>\\'a\\'\" ) ; return - 1 ; } } if ( * str >= end ) goto unexpected_end_of_string ; if ( * * str == ':' ) { * str += 1 ; if ( * str >= end ) goto unexpected_end_of_string ; format_spec = fstring_parse ( str , end , raw , recurse_lvl + 1 , c , n ) ; if ( ! format_spec ) return - 1 ; } if ( * str >= end || * * str != '}' ) goto unexpected_end_of_string ; assert ( * str < end ) ; assert ( * * str == '}' ) ; * str += 1 ; * expression = FormattedValue ( simple_expression , conversion , format_spec , LINENO ( n ) , n -> n_col_offset , n -> n_end_lineno , n -> n_end_col_offset , c -> c_arena ) ; if ( ! * expression ) return - 1 ; return 0 ; unexpected_end_of_string : ast_error ( c , n , \"f-string:<S2SV_blank>expecting<S2SV_blank>\\'}\\'\" ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int decode_term_subexp ( vp9_reader * r ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! vp9_read_bit ( r ) ) <S2SV_EndBug> <S2SV_StartBug> return vp9_read_literal ( r , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! vp9_read_bit ( r ) ) <S2SV_EndBug> <S2SV_StartBug> return vp9_read_literal ( r , 4 ) + 16 ; <S2SV_EndBug> <S2SV_StartBug> if ( ! vp9_read_bit ( r ) ) <S2SV_EndBug> <S2SV_StartBug> return vp9_read_literal ( r , 5 ) + 32 ; <S2SV_EndBug> return decode_uniform ( r ) + 64 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int decode_term_subexp ( vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> if ( ! vpx_read_bit <S2SV_ModEnd> ( r ) <S2SV_ModStart> ) ) return vpx_read_literal <S2SV_ModEnd> ( r , <S2SV_ModStart> if ( ! vpx_read_bit <S2SV_ModEnd> ( r ) <S2SV_ModStart> ) ) return vpx_read_literal <S2SV_ModEnd> ( r , <S2SV_ModStart> if ( ! vpx_read_bit <S2SV_ModEnd> ( r ) <S2SV_ModStart> ) ) return vpx_read_literal <S2SV_ModEnd> ( r ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8cx_pick_filter_level_fast ( YV12_BUFFER_CONFIG * sd , VP8_COMP * cpi ) { VP8_COMMON * cm = & cpi -> common ; int best_err = 0 ; int filt_err = 0 ; int min_filter_level = get_min_filter_level ( cpi , cm -> base_qindex ) ; int max_filter_level = get_max_filter_level ( cpi , cm -> base_qindex ) ; int filt_val ; <S2SV_StartBug> int best_filt_val = cm -> filter_level ; <S2SV_EndBug> YV12_BUFFER_CONFIG * saved_frame = cm -> frame_to_show ; cm -> frame_to_show = & cpi -> pick_lf_lvl_frame ; if ( cm -> frame_type == KEY_FRAME ) cm -> sharpness_level = 0 ; else cm -> sharpness_level = cpi -> oxcf . Sharpness ; if ( cm -> sharpness_level != cm -> last_sharpness_level ) { vp8_loop_filter_update_sharpness ( & cm -> lf_info , cm -> sharpness_level ) ; cm -> last_sharpness_level = cm -> sharpness_level ; } if ( cm -> filter_level < min_filter_level ) cm -> filter_level = min_filter_level ; else if ( cm -> filter_level > max_filter_level ) cm -> filter_level = max_filter_level ; filt_val = cm -> filter_level ; best_filt_val = filt_val ; <S2SV_StartBug> vp8_yv12_copy_partial_frame ( saved_frame , cm -> frame_to_show ) ; <S2SV_EndBug> vp8_loop_filter_partial_frame ( cm , & cpi -> mb . e_mbd , filt_val ) ; best_err = calc_partial_ssl_err ( sd , cm -> frame_to_show ) ; filt_val -= 1 + ( filt_val > 10 ) ; while ( filt_val >= min_filter_level ) { <S2SV_StartBug> vp8_yv12_copy_partial_frame ( saved_frame , cm -> frame_to_show ) ; <S2SV_EndBug> vp8_loop_filter_partial_frame ( cm , & cpi -> mb . e_mbd , filt_val ) ; filt_err = calc_partial_ssl_err ( sd , cm -> frame_to_show ) ; if ( filt_err < best_err ) { best_err = filt_err ; best_filt_val = filt_val ; } else break ; filt_val -= 1 + ( filt_val > 10 ) ; } filt_val = cm -> filter_level + 1 + ( filt_val > 10 ) ; if ( best_filt_val == cm -> filter_level ) { best_err -= ( best_err >> 10 ) ; while ( filt_val < max_filter_level ) { <S2SV_StartBug> vp8_yv12_copy_partial_frame ( saved_frame , cm -> frame_to_show ) ; <S2SV_EndBug> vp8_loop_filter_partial_frame ( cm , & cpi -> mb . e_mbd , filt_val ) ; filt_err = calc_partial_ssl_err ( sd , cm -> frame_to_show ) ; if ( filt_err < best_err ) { best_err = filt_err - ( filt_err >> 10 ) ; best_filt_val = filt_val ; } else break ; filt_val += 1 + ( filt_val > 10 ) ; } } cm -> filter_level = best_filt_val ; if ( cm -> filter_level < min_filter_level ) cm -> filter_level = min_filter_level ; if ( cm -> filter_level > max_filter_level ) cm -> filter_level = max_filter_level ; cm -> frame_to_show = saved_frame ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int best_filt_val <S2SV_ModEnd> ; YV12_BUFFER_CONFIG * <S2SV_ModStart> = filt_val ; yv12_copy_partial_frame <S2SV_ModEnd> ( saved_frame , <S2SV_ModStart> min_filter_level ) { yv12_copy_partial_frame <S2SV_ModEnd> ( saved_frame , <S2SV_ModStart> max_filter_level ) { yv12_copy_partial_frame <S2SV_ModEnd> ( saved_frame ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5706\n\n```\nCWE-416 static struct file * path_openat ( int dfd , struct filename * pathname , struct nameidata * nd , const struct open_flags * op , int flags ) { struct file * file ; struct path path ; int opened = 0 ; int error ; file = get_empty_filp ( ) ; if ( IS_ERR ( file ) ) return file ; file -> f_flags = op -> open_flag ; if ( unlikely ( file -> f_flags & __O_TMPFILE ) ) { error = do_tmpfile ( dfd , pathname , nd , flags , op , file , & opened ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } error = path_init ( dfd , pathname , flags , nd ) ; if ( unlikely ( error ) ) goto out ; error = do_last ( nd , & path , file , op , & opened , pathname ) ; while ( unlikely ( error > 0 ) ) { struct path link = path ; void * cookie ; if ( ! ( nd -> flags & LOOKUP_FOLLOW ) ) { path_put_conditional ( & path , nd ) ; path_put ( & nd -> path ) ; error = - ELOOP ; break ; } error = may_follow_link ( & link , nd ) ; if ( unlikely ( error ) ) break ; nd -> flags |= LOOKUP_PARENT ; nd -> flags &= ~ ( LOOKUP_OPEN | LOOKUP_CREATE | LOOKUP_EXCL ) ; error = follow_link ( & link , nd , & cookie ) ; if ( unlikely ( error ) ) break ; error = do_last ( nd , & path , file , op , & opened , pathname ) ; put_link ( nd , & link , cookie ) ; } out : path_cleanup ( nd ) ; <S2SV_StartBug> if ( ! ( opened & FILE_OPENED ) ) { <S2SV_EndBug> BUG_ON ( ! error ) ; put_filp ( file ) ; } if ( unlikely ( error ) ) { if ( error == - EOPENSTALE ) { if ( flags & LOOKUP_RCU ) error = - ECHILD ; else error = - ESTALE ; } file = ERR_PTR ( error ) ; } return file ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; goto out2 <S2SV_ModEnd> ; } error <S2SV_ModStart> nd ) ; out2 :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14681\n\n```\nCWE-787 static int kwajd_read_headers ( struct mspack_system * sys , struct mspack_file * fh , struct mskwajd_header * hdr ) { unsigned char buf [ 16 ] ; int i ; if ( sys -> read ( fh , & buf [ 0 ] , kwajh_SIZEOF ) != kwajh_SIZEOF ) { return MSPACK_ERR_READ ; } if ( ( ( unsigned int ) EndGetI32 ( & buf [ kwajh_Signature1 ] ) != 0x4A41574B ) || ( ( unsigned int ) EndGetI32 ( & buf [ kwajh_Signature2 ] ) != 0xD127F088 ) ) { return MSPACK_ERR_SIGNATURE ; } hdr -> comp_type = EndGetI16 ( & buf [ kwajh_CompMethod ] ) ; hdr -> data_offset = EndGetI16 ( & buf [ kwajh_DataOffset ] ) ; hdr -> headers = EndGetI16 ( & buf [ kwajh_Flags ] ) ; hdr -> length = 0 ; hdr -> filename = NULL ; hdr -> extra = NULL ; hdr -> extra_length = 0 ; if ( hdr -> headers & MSKWAJ_HDR_HASLENGTH ) { if ( sys -> read ( fh , & buf [ 0 ] , 4 ) != 4 ) return MSPACK_ERR_READ ; hdr -> length = EndGetI32 ( & buf [ 0 ] ) ; } if ( hdr -> headers & MSKWAJ_HDR_HASUNKNOWN1 ) { if ( sys -> read ( fh , & buf [ 0 ] , 2 ) != 2 ) return MSPACK_ERR_READ ; } if ( hdr -> headers & MSKWAJ_HDR_HASUNKNOWN2 ) { if ( sys -> read ( fh , & buf [ 0 ] , 2 ) != 2 ) return MSPACK_ERR_READ ; i = EndGetI16 ( & buf [ 0 ] ) ; if ( sys -> seek ( fh , ( off_t ) i , MSPACK_SYS_SEEK_CUR ) ) return MSPACK_ERR_SEEK ; } if ( hdr -> headers & ( MSKWAJ_HDR_HASFILENAME | MSKWAJ_HDR_HASFILEEXT ) ) { <S2SV_StartBug> off_t pos = sys -> tell ( fh ) ; <S2SV_EndBug> char * fn = ( char * ) sys -> alloc ( sys , ( size_t ) 13 ) ; <S2SV_StartBug> if ( ! fn ) return MSPACK_ERR_NOMEMORY ; <S2SV_EndBug> <S2SV_StartBug> hdr -> filename = fn ; <S2SV_EndBug> if ( hdr -> headers & MSKWAJ_HDR_HASFILENAME ) { <S2SV_StartBug> if ( sys -> read ( fh , & buf [ 0 ] , 9 ) != 9 ) return MSPACK_ERR_READ ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < 9 ; i ++ , fn ++ ) if ( ! ( * fn = buf [ i ] ) ) break ; <S2SV_EndBug> <S2SV_StartBug> pos += ( i < 9 ) ? i + 1 : 9 ; <S2SV_EndBug> if ( sys -> seek ( fh , pos , MSPACK_SYS_SEEK_START ) ) <S2SV_StartBug> return MSPACK_ERR_SEEK ; <S2SV_EndBug> } if ( hdr -> headers & MSKWAJ_HDR_HASFILEEXT ) { * fn ++ = '.' ; <S2SV_StartBug> if ( sys -> read ( fh , & buf [ 0 ] , 4 ) != 4 ) return MSPACK_ERR_READ ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < 4 ; i ++ , fn ++ ) if ( ! ( * fn = buf [ i ] ) ) break ; <S2SV_EndBug> <S2SV_StartBug> pos += ( i < 4 ) ? i + 1 : 4 ; <S2SV_EndBug> if ( sys -> seek ( fh , pos , MSPACK_SYS_SEEK_START ) ) <S2SV_StartBug> return MSPACK_ERR_SEEK ; <S2SV_EndBug> } * fn = '\\\\0' ; } if ( hdr -> headers & MSKWAJ_HDR_HASEXTRATEXT ) { if ( sys -> read ( fh , & buf [ 0 ] , 2 ) != 2 ) return MSPACK_ERR_READ ; i = EndGetI16 ( & buf [ 0 ] ) ; hdr -> extra = ( char * ) sys -> alloc ( sys , ( size_t ) i + 1 ) ; if ( ! hdr -> extra ) return MSPACK_ERR_NOMEMORY ; if ( sys -> read ( fh , hdr -> extra , i ) != i ) return MSPACK_ERR_READ ; hdr -> extra [ i ] = '\\\\0' ; hdr -> extra_length = i ; } return MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { int len <S2SV_ModEnd> ; char * <S2SV_ModStart> if ( ! ( hdr -> filename = fn ) ) <S2SV_ModEnd> return MSPACK_ERR_NOMEMORY ; <S2SV_ModStart> return MSPACK_ERR_NOMEMORY ; <S2SV_ModEnd> if ( hdr <S2SV_ModStart> { if ( ( len = <S2SV_ModStart> , 9 ) ) < 2 <S2SV_ModEnd> ) return MSPACK_ERR_READ <S2SV_ModStart> ; i < len <S2SV_ModEnd> ; i ++ <S2SV_ModStart> ; i ++ ) if ( ! ( * fn ++ <S2SV_ModEnd> = buf [ <S2SV_ModStart> ) break ; if ( i == 9 && buf [ 8 ] != '\\\\0' ) return MSPACK_ERR_DATAFORMAT ; if ( sys -> seek ( fh , ( off_t ) ( <S2SV_ModEnd> i + 1 <S2SV_ModStart> i + 1 - len ) , MSPACK_SYS_SEEK_CUR <S2SV_ModEnd> ) ) return <S2SV_ModStart> ) return MSPACK_ERR_SEEK ; fn -- <S2SV_ModStart> ; if ( ( len = <S2SV_ModStart> , 4 ) ) < 2 <S2SV_ModEnd> ) return MSPACK_ERR_READ <S2SV_ModStart> ; i < len <S2SV_ModEnd> ; i ++ <S2SV_ModStart> ; i ++ ) if ( ! ( * fn ++ <S2SV_ModEnd> = buf [ <S2SV_ModStart> ) break ; if ( i == 4 && buf [ 3 ] != '\\\\0' ) return MSPACK_ERR_DATAFORMAT ; if ( sys -> seek ( fh , ( off_t ) ( <S2SV_ModEnd> i + 1 <S2SV_ModStart> i + 1 - len ) , MSPACK_SYS_SEEK_CUR <S2SV_ModEnd> ) ) return <S2SV_ModStart> ) return MSPACK_ERR_SEEK ; fn --\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline unsigned short ReadPropertyUnsignedShort ( const EndianType endian , const unsigned char * buffer ) { unsigned short value ; if ( endian == LSBEndian ) { <S2SV_StartBug> value = ( unsigned short ) ( ( buffer [ 1 ] << 8 ) | buffer [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> return ( ( unsigned short ) ( value & 0xffff ) ) ; <S2SV_EndBug> } <S2SV_StartBug> value = ( unsigned short ) ( ( ( ( unsigned char * ) buffer ) [ 0 ] << 8 ) | <S2SV_EndBug> ( ( unsigned char * ) buffer ) [ 1 ] ) ; <S2SV_StartBug> return ( ( unsigned short ) ( value & 0xffff ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned short ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 8 ; value |= ( unsigned short ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; return ( <S2SV_ModStart> ; return ( <S2SV_ModEnd> value & 0xffff <S2SV_ModStart> value & 0xffff <S2SV_ModEnd> ) ; } <S2SV_ModStart> unsigned short ) buffer <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> ] << 8 ; value |= <S2SV_ModEnd> ( unsigned short <S2SV_ModStart> unsigned short ) buffer [ 1 ] ; return <S2SV_ModStart> & 0xffff ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 int oe_iov_pack ( const struct oe_iovec * iov , int iovcnt , void * * buf_out , <S2SV_StartBug> size_t * buf_size_out ) <S2SV_EndBug> { int ret = - 1 ; struct oe_iovec * buf = NULL ; size_t buf_size = 0 ; size_t data_size = 0 ; if ( buf_out ) * buf_out = NULL ; if ( buf_size_out ) * buf_size_out = 0 ; <S2SV_StartBug> if ( iovcnt < 0 || ( iovcnt > 0 && ! iov ) || ! buf_out || ! buf_size_out ) <S2SV_EndBug> goto done ; if ( iovcnt == 0 ) { if ( iov ) { if ( ! ( buf = oe_calloc ( 1 , sizeof ( uint64_t ) ) ) ) goto done ; buf_size = sizeof ( uint64_t ) ; } * buf_out = buf ; <S2SV_StartBug> * buf_size_out = buf_size ; <S2SV_EndBug> buf = NULL ; ret = 0 ; goto done ; } for ( int i = 0 ; i < iovcnt ; i ++ ) data_size += iov [ i ] . iov_len ; buf_size = ( sizeof ( struct oe_iovec ) * ( size_t ) iovcnt ) + data_size ; if ( ! ( buf = oe_calloc ( 1 , buf_size ) ) ) goto done ; { uint8_t * p = ( uint8_t * ) & buf [ iovcnt ] ; size_t n = data_size ; int i ; for ( i = 0 ; i < iovcnt ; i ++ ) { const size_t iov_len = iov [ i ] . iov_len ; const void * iov_base = iov [ i ] . iov_base ; if ( iov_len ) { buf [ i ] . iov_len = iov_len ; buf [ i ] . iov_base = ( void * ) ( p - ( uint8_t * ) buf ) ; if ( ! iov_base ) goto done ; if ( oe_memcpy_s ( p , n , iov_base , iov_len ) != OE_OK ) goto done ; p += iov_len ; n -= iov_len ; } } if ( n != 0 ) goto done ; } * buf_out = buf ; * buf_size_out = buf_size ; <S2SV_StartBug> buf = NULL ; <S2SV_EndBug> ret = 0 ; done : if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t * buf_size_out , size_t * data_size_out <S2SV_ModStart> ; if ( data_size_out ) * data_size_out = 0 ; if ( <S2SV_ModStart> || ! buf_size_out || ! data_size_out <S2SV_ModStart> buf_size_out = buf_size ; * data_size_out = data_size <S2SV_ModStart> = buf_size ; * data_size_out = data_size ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14043\n\n```\nCWE-732 static M_fs_error_t M_fs_copy_file ( const char * path_old , const char * path_new , M_fs_file_mode_t mode , M_fs_progress_cb_t cb , M_fs_progress_flags_t progress_flags , M_fs_progress_t * progress , const M_fs_perms_t * perms ) { M_fs_file_t * fd_old ; M_fs_file_t * fd_new ; M_fs_info_t * info = NULL ; unsigned char temp [ M_FS_BUF_SIZE ] ; size_t read_len ; size_t wrote_len ; size_t wrote_total = 0 ; size_t offset ; M_fs_error_t res ; <S2SV_StartBug> if ( M_fs_perms_can_access ( path_new , M_FS_PERMS_MODE_NONE ) == M_FS_ERROR_SUCCESS ) { <S2SV_EndBug> res = M_fs_delete ( path_new , M_FALSE , NULL , M_FS_PROGRESS_NOEXTRA ) ; if ( res != M_FS_ERROR_SUCCESS ) { return res ; } } res = M_fs_file_open ( & fd_old , path_old , M_FS_BUF_SIZE , M_FS_FILE_MODE_READ | M_FS_FILE_MODE_NOCREATE , NULL ) ; if ( res != M_FS_ERROR_SUCCESS ) { return res ; } if ( perms == NULL && mode & M_FS_FILE_MODE_PRESERVE_PERMS ) { res = M_fs_info_file ( & info , fd_old , M_FS_PATH_INFO_FLAGS_NONE ) ; if ( res != M_FS_ERROR_SUCCESS ) { M_fs_file_close ( fd_old ) ; return res ; } perms = M_fs_info_get_perms ( info ) ; } res = M_fs_file_open ( & fd_new , path_new , M_FS_BUF_SIZE , M_FS_FILE_MODE_WRITE | M_FS_FILE_MODE_OVERWRITE , perms ) ; M_fs_info_destroy ( info ) ; if ( res != M_FS_ERROR_SUCCESS ) { M_fs_file_close ( fd_old ) ; return res ; } while ( ( res = M_fs_file_read ( fd_old , temp , sizeof ( temp ) , & read_len , M_FS_FILE_RW_NORMAL ) ) == M_FS_ERROR_SUCCESS && read_len != 0 ) { offset = 0 ; while ( offset < read_len ) { res = M_fs_file_write ( fd_new , temp + offset , read_len - offset , & wrote_len , M_FS_FILE_RW_NORMAL ) ; offset += wrote_len ; wrote_total += wrote_len ; if ( cb ) { M_fs_progress_set_result ( progress , res ) ; if ( progress_flags & M_FS_PROGRESS_SIZE_TOTAL ) { M_fs_progress_set_size_total_progess ( progress , M_fs_progress_get_size_total_progess ( progress ) + wrote_len ) ; } if ( progress_flags & M_FS_PROGRESS_SIZE_CUR ) { M_fs_progress_set_size_current_progress ( progress , wrote_total ) ; } if ( progress_flags & M_FS_PROGRESS_COUNT ) { M_fs_progress_set_count ( progress , M_fs_progress_get_count ( progress ) + 1 ) ; } if ( ! cb ( progress ) ) { res = M_FS_ERROR_CANCELED ; } } if ( res != M_FS_ERROR_SUCCESS ) { break ; } } if ( res != M_FS_ERROR_SUCCESS ) { break ; } } M_fs_file_close ( fd_old ) ; M_fs_file_close ( fd_new ) ; if ( res != M_FS_ERROR_SUCCESS ) { return res ; } return M_FS_ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> M_fs_error_t res ; <S2SV_ModEnd> res = M_fs_file_open\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11609\n\n```\nCWE-476 static int stv06xx_isoc_init ( struct gspca_dev * gspca_dev ) <S2SV_StartBug> { <S2SV_EndBug> struct usb_host_interface * alt ; struct sd * sd = ( struct sd * ) gspca_dev ; <S2SV_StartBug> alt = & gspca_dev -> dev -> actconfig -> intf_cache [ 0 ] -> altsetting [ 1 ] ; <S2SV_EndBug> alt -> endpoint [ 0 ] . desc . wMaxPacketSize = cpu_to_le16 ( sd -> sensor -> max_packet_size [ gspca_dev -> curr_mode ] ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gspca_dev ) { struct usb_interface_cache * intfc ; <S2SV_ModStart> ) gspca_dev ; intfc = <S2SV_ModEnd> gspca_dev -> dev <S2SV_ModStart> [ 0 ] ; if ( intfc -> num_altsetting < 2 ) return - ENODEV ; alt = & intfc <S2SV_ModStart> [ 1 ] ; if ( alt -> desc . bNumEndpoints < 1 ) return - ENODEV\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14604\n\n```\nCWE-20 static gboolean is_link_trusted ( NautilusFile * file , gboolean is_launcher ) { GFile * location ; gboolean res ; <S2SV_StartBug> if ( ! is_launcher ) <S2SV_EndBug> { return TRUE ; } <S2SV_StartBug> if ( nautilus_file_can_execute ( file ) ) <S2SV_EndBug> { return TRUE ; } res = FALSE ; if ( nautilus_file_is_local ( file ) ) { location = nautilus_file_get_location ( file ) ; res = nautilus_is_in_system_dir ( location ) ; g_object_unref ( location ) ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gboolean res ; g_autofree gchar * trusted = NULL ; <S2SV_ModStart> TRUE ; } trusted = nautilus_file_get_metadata ( file , NAUTILUS_METADATA_KEY_DESKTOP_FILE_TRUSTED , NULL ) ; <S2SV_ModStart> ( file ) && trusted != NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9390\n\n```\nCWE-20 static int jpc_siz_getparms ( jpc_ms_t * ms , jpc_cstate_t * cstate , jas_stream_t * in ) { jpc_siz_t * siz = & ms -> parms . siz ; unsigned int i ; uint_fast8_t tmp ; cstate = 0 ; if ( jpc_getuint16 ( in , & siz -> caps ) || jpc_getuint32 ( in , & siz -> width ) || jpc_getuint32 ( in , & siz -> height ) || jpc_getuint32 ( in , & siz -> xoff ) || jpc_getuint32 ( in , & siz -> yoff ) || jpc_getuint32 ( in , & siz -> tilewidth ) || jpc_getuint32 ( in , & siz -> tileheight ) || jpc_getuint32 ( in , & siz -> tilexoff ) || jpc_getuint32 ( in , & siz -> tileyoff ) || jpc_getuint16 ( in , & siz -> numcomps ) ) { return - 1 ; } if ( ! siz -> width || ! siz -> height || ! siz -> tilewidth || ! siz -> tileheight || ! siz -> numcomps || siz -> numcomps > 16384 ) { return - 1 ; } <S2SV_StartBug> if ( ! ( siz -> comps = jas_alloc2 ( siz -> numcomps , sizeof ( jpc_sizcomp_t ) ) ) ) { <S2SV_EndBug> return - 1 ; } for ( i = 0 ; i < siz -> numcomps ; ++ i ) { if ( jpc_getuint8 ( in , & tmp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . hsamp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . vsamp ) ) { jas_free ( siz -> comps ) ; return - 1 ; } if ( siz -> comps [ i ] . hsamp == 0 || siz -> comps [ i ] . hsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>XRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . hsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; } if ( siz -> comps [ i ] . vsamp == 0 || siz -> comps [ i ] . vsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>YRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . vsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; } siz -> comps [ i ] . sgnd = ( tmp >> 7 ) & 1 ; siz -> comps [ i ] . prec = ( tmp & 0x7f ) + 1 ; } if ( jas_stream_eof ( in ) ) { jas_free ( siz -> comps ) ; return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( siz -> tilexoff >= siz -> width || siz -> tileyoff >= siz -> height ) { jas_eprintf ( \"all<S2SV_blank>tiles<S2SV_blank>are<S2SV_blank>outside<S2SV_blank>the<S2SV_blank>image<S2SV_blank>area\\\\n\" ) ; return - 1 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12644\n\n```\nCWE-772 static Image * ReadDCMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowDCMException ( exception , message ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( stream_info != ( DCMStreamInfo * ) NULL ) stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; ThrowReaderException ( ( exception ) , ( message ) ) ; } <S2SV_EndBug> char explicit_vr [ MaxTextExtent ] , implicit_vr [ MaxTextExtent ] , magick [ MaxTextExtent ] , photometric [ MaxTextExtent ] ; DCMInfo info ; DCMStreamInfo * stream_info ; Image * image ; int * bluemap , datum , * greenmap , * graymap , * redmap ; MagickBooleanType explicit_file , explicit_retry , sequence , use_explicit ; MagickOffsetType offset ; register unsigned char * p ; register ssize_t i ; size_t colors , height , length , number_scenes , quantum , status , width ; ssize_t count , scene ; unsigned char * data ; unsigned short group , element ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 8UL ; image -> endian = LSBEndian ; data = ( unsigned char * ) NULL ; stream_info = ( DCMStreamInfo * ) AcquireMagickMemory ( sizeof ( * stream_info ) ) ; if ( stream_info == ( DCMStreamInfo * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( stream_info , 0 , sizeof ( * stream_info ) ) ; count = ReadBlob ( image , 128 , ( unsigned char * ) magick ) ; if ( count != 128 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) magick ) ; if ( ( count != 4 ) || ( LocaleNCompare ( magick , \"DICM\" , 4 ) != 0 ) ) { offset = SeekBlob ( image , 0L , SEEK_SET ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickString ( photometric , \"MONOCHROME1<S2SV_blank>\" , MaxTextExtent ) ; info . polarity = MagickFalse ; info . scale = ( Quantum * ) NULL ; info . bits_allocated = 8 ; info . bytes_per_pixel = 1 ; info . depth = 8 ; info . mask = 0xffff ; info . max_value = 255UL ; info . samples_per_pixel = 1 ; info . signed_data = ( ~ 0UL ) ; info . significant_bits = 0 ; info . rescale = MagickFalse ; info . rescale_intercept = 0.0 ; info . rescale_slope = 1.0 ; info . window_center = 0.0 ; info . window_width = 0.0 ; data = ( unsigned char * ) NULL ; element = 0 ; explicit_vr [ 2 ] = '\\\\0' ; explicit_file = MagickFalse ; colors = 0 ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; graymap = ( int * ) NULL ; height = 0 ; number_scenes = 1 ; sequence = MagickFalse ; use_explicit = MagickFalse ; explicit_retry = MagickFalse ; width = 0 ; for ( group = 0 ; ( group != 0x7FE0 ) || ( element != 0x0010 ) || ( sequence != MagickFalse ) ; ) { image -> offset = ( ssize_t ) TellBlob ( image ) ; group = ReadBlobLSBShort ( image ) ; element = ReadBlobLSBShort ( image ) ; if ( ( group != 0x0002 ) && ( image -> endian == MSBEndian ) ) { group = ( unsigned short ) ( ( group << 8 ) | ( ( group >> 8 ) & 0xFF ) ) ; element = ( unsigned short ) ( ( element << 8 ) | ( ( element >> 8 ) & 0xFF ) ) ; } quantum = 0 ; for ( i = 0 ; dicom_info [ i ] . group < 0xffff ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) CopyMagickString ( implicit_vr , dicom_info [ i ] . vr , MaxTextExtent ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) explicit_vr ) ; if ( count != 2 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( explicit_file == MagickFalse ) && ( group != 0x0002 ) ) explicit_file = ( isupper ( ( unsigned char ) * explicit_vr ) != MagickFalse ) && ( isupper ( ( unsigned char ) * ( explicit_vr + 1 ) ) != MagickFalse ) ? MagickTrue : MagickFalse ; use_explicit = ( ( group == 0x0002 ) && ( explicit_retry == MagickFalse ) ) || ( explicit_file != MagickFalse ) ? MagickTrue : MagickFalse ; if ( ( use_explicit != MagickFalse ) && ( strncmp ( implicit_vr , \"xs\" , 2 ) == 0 ) ) ( void ) CopyMagickString ( implicit_vr , explicit_vr , MaxTextExtent ) ; if ( ( use_explicit == MagickFalse ) || ( strncmp ( implicit_vr , \"!!\" , 2 ) == 0 ) ) { offset = SeekBlob ( image , ( MagickOffsetType ) - 2 , SEEK_CUR ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; quantum = 4 ; } else { quantum = 2 ; if ( ( strncmp ( explicit_vr , \"OB\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"UN\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"SQ\" , 2 ) == 0 ) ) { ( void ) ReadBlobLSBShort ( image ) ; quantum = 4 ; } } datum = 0 ; if ( quantum == 4 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( quantum == 2 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } quantum = 0 ; length = 1 ; if ( datum != 0 ) { if ( ( strncmp ( implicit_vr , \"SS\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"US\" , 2 ) == 0 ) ) quantum = 2 ; else if ( ( strncmp ( implicit_vr , \"UL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"FL\" , 2 ) == 0 ) ) quantum = 4 ; else if ( strncmp ( implicit_vr , \"FD\" , 2 ) != 0 ) quantum = 1 ; else quantum = 8 ; if ( datum != ~ 0 ) length = ( size_t ) datum / quantum ; else { quantum = 0 ; length = 0 ; } } if ( image_info -> verbose != MagickFalse ) { if ( use_explicit == MagickFalse ) explicit_vr [ 0 ] = '\\\\0' ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) FormatLocaleFile ( stdout , \"0x%04lX<S2SV_blank>%4ld<S2SV_blank>%s-%s<S2SV_blank>(0x%04lx,0x%04lx)\" , ( unsigned long ) image -> offset , ( long ) length , implicit_vr , explicit_vr , ( unsigned long ) group , ( unsigned long ) element ) ; if ( dicom_info [ i ] . description != ( char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"<S2SV_blank>%s\" , dicom_info [ i ] . description ) ; ( void ) FormatLocaleFile ( stdout , \":<S2SV_blank>\" ) ; } if ( ( sequence == MagickFalse ) && ( group == 0x7FE0 ) && ( element == 0x0010 ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; break ; } data = ( unsigned char * ) NULL ; if ( ( length == 1 ) && ( quantum == 1 ) ) datum = ReadBlobByte ( image ) ; else if ( ( length == 1 ) && ( quantum == 2 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } else if ( ( length == 1 ) && ( quantum == 4 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( ( quantum != 0 ) && ( length != 0 ) ) { if ( length > GetBlobSize ( image ) ) <S2SV_StartBug> ThrowReaderException ( CorruptImageError , <S2SV_EndBug> \"InsufficientImageDataInFile\" ) ; if ( ~ length >= 1 ) data = ( unsigned char * ) AcquireQuantumMemory ( length + 1 , quantum * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) quantum * length , data ) ; if ( count != ( ssize_t ) ( quantum * length ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"count=%d<S2SV_blank>quantum=%d<S2SV_blank>\" \"length=%d<S2SV_blank>group=%d\\\\n\" , ( int ) count , ( int ) quantum , ( int ) length , ( int ) group ) ; ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } data [ length * quantum ] = '\\\\0' ; } else if ( ( unsigned int ) datum == 0xFFFFFFFFU ) { sequence = MagickTrue ; continue ; } if ( ( unsigned int ) ( ( group << 16 ) | element ) == 0xFFFEE0DD ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; sequence = MagickFalse ; continue ; } if ( sequence != MagickFalse ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; continue ; } switch ( group ) { case 0x0002 : { switch ( element ) { case 0x0010 : { char transfer_syntax [ MaxTextExtent ] ; if ( ( datum == 0 ) && ( explicit_retry == MagickFalse ) ) { explicit_retry = MagickTrue ; ( void ) SeekBlob ( image , ( MagickOffsetType ) 0 , SEEK_SET ) ; group = 0 ; element = 0 ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"Corrupted<S2SV_blank>image<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>explicit<S2SV_blank>format\\\\n\" ) ; break ; } * transfer_syntax = '\\\\0' ; if ( data != ( unsigned char * ) NULL ) ( void ) CopyMagickString ( transfer_syntax , ( char * ) data , MaxTextExtent ) ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"transfer_syntax=%s\\\\n\" , ( const char * ) transfer_syntax ) ; if ( strncmp ( transfer_syntax , \"1.2.840.10008.1.2\" , 17 ) == 0 ) { int count , subtype , type ; type = 1 ; subtype = 0 ; if ( strlen ( transfer_syntax ) > 17 ) { count = sscanf ( transfer_syntax + 17 , \".%d.%d\" , & type , & subtype ) ; if ( count < 1 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } switch ( type ) { case 1 : { image -> endian = LSBEndian ; break ; } case 2 : { image -> endian = MSBEndian ; break ; } case 4 : { if ( ( subtype >= 80 ) && ( subtype <= 81 ) ) image -> compression = JPEGCompression ; else if ( ( subtype >= 90 ) && ( subtype <= 93 ) ) image -> compression = JPEG2000Compression ; else image -> compression = JPEGCompression ; break ; } case 5 : { image -> compression = RLECompression ; break ; } } } break ; } default : break ; } break ; } case 0x0028 : { switch ( element ) { case 0x0002 : { info . samples_per_pixel = ( size_t ) datum ; break ; } case 0x0004 : { if ( data == ( unsigned char * ) NULL ) break ; for ( i = 0 ; i < ( ssize_t ) MagickMin ( length , MaxTextExtent - 1 ) ; i ++ ) photometric [ i ] = ( char ) data [ i ] ; photometric [ i ] = '\\\\0' ; info . polarity = LocaleCompare ( photometric , \"MONOCHROME1<S2SV_blank>\" ) == 0 ? MagickTrue : MagickFalse ; break ; } case 0x0006 : { if ( datum == 1 ) image -> interlace = PlaneInterlace ; break ; } case 0x0008 : { if ( data == ( unsigned char * ) NULL ) break ; number_scenes = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x0010 : { height = ( size_t ) datum ; break ; } case 0x0011 : { width = ( size_t ) datum ; break ; } case 0x0100 : { info . bits_allocated = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( datum > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . bits_allocated ; if ( info . depth > 32 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . bits_allocated ) - 1 ; image -> depth = info . depth ; break ; } case 0x0101 : { info . significant_bits = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( info . significant_bits > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . significant_bits ; if ( info . depth > 32 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . significant_bits ) - 1 ; info . mask = ( size_t ) GetQuantumRange ( info . significant_bits ) ; image -> depth = info . depth ; break ; } case 0x0102 : { break ; } case 0x0103 : { info . signed_data = ( size_t ) datum ; break ; } case 0x1050 : { if ( data != ( unsigned char * ) NULL ) info . window_center = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1051 : { if ( data != ( unsigned char * ) NULL ) info . window_width = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1052 : { if ( data != ( unsigned char * ) NULL ) info . rescale_intercept = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1053 : { if ( data != ( unsigned char * ) NULL ) info . rescale_slope = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1200 : case 0x3006 : { if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / info . bytes_per_pixel ) ; datum = ( int ) colors ; graymap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * graymap ) ) ; if ( graymap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) if ( info . bytes_per_pixel == 1 ) graymap [ i ] = ( int ) data [ i ] ; else graymap [ i ] = ( int ) ( ( short * ) data ) [ i ] ; break ; } case 0x1201 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; redmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * redmap ) ) ; if ( redmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; redmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1202 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; greenmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * greenmap ) ) ; if ( greenmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; greenmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1203 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; bluemap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * bluemap ) ) ; if ( bluemap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; bluemap [ i ] = ( int ) index ; p += 2 ; } break ; } default : break ; } break ; } case 0x2050 : { switch ( element ) { case 0x0020 : { if ( ( data != ( unsigned char * ) NULL ) && ( strncmp ( ( char * ) data , \"INVERSE\" , 7 ) == 0 ) ) info . polarity = MagickTrue ; break ; } default : break ; } break ; } default : break ; } if ( data != ( unsigned char * ) NULL ) { char * attribute ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; if ( dicom_info [ i ] . description != ( char * ) NULL ) { attribute = AcquireString ( \"dcm:\" ) ; ( void ) ConcatenateString ( & attribute , dicom_info [ i ] . description ) ; for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i == ( ssize_t ) length ) || ( length > 4 ) ) { ( void ) SubstituteString ( & attribute , \"<S2SV_blank>\" , \"\" ) ; ( void ) SetImageProperty ( image , attribute , ( char * ) data ) ; } attribute = DestroyString ( attribute ) ; } } if ( image_info -> verbose != MagickFalse ) { if ( data == ( unsigned char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"%d\\\\n\" , datum ) ; else { for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i != ( ssize_t ) length ) && ( length <= 4 ) ) { ssize_t j ; datum = 0 ; for ( j = ( ssize_t ) length - 1 ; j >= 0 ; j -- ) datum = ( 256 * datum + data [ j ] ) ; ( void ) FormatLocaleFile ( stdout , \"%d\" , datum ) ; } else for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( isprint ( ( int ) data [ i ] ) != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"%c\" , data [ i ] ) ; else ( void ) FormatLocaleFile ( stdout , \"%c\" , '.' ) ; ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; } } if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( ( width == 0 ) || ( height == 0 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; if ( info . signed_data == 0xffff ) info . signed_data = ( size_t ) ( info . significant_bits == 16 ? 1 : 0 ) ; if ( ( image -> compression == JPEGCompression ) || ( image -> compression == JPEG2000Compression ) ) { Image * images ; ImageInfo * read_info ; int c ; size_t length ; unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { MagickOffsetType offset ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; images = NewImageList ( ) ; for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { char filename [ MaxTextExtent ] ; const char * property ; FILE * file ; Image * jpeg_image ; int unique_file ; unsigned int tag ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( tag == 0xFFFEE0DD ) break ; if ( tag != 0xFFFEE000 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( file == ( FILE * ) NULL ) { ( void ) RelinquishUniqueFileResource ( filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , filename ) ; break ; } for ( ; length != 0 ; length -- ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } ( void ) fputc ( c , file ) ; } ( void ) fclose ( file ) ; ( void ) FormatLocaleString ( read_info -> filename , MaxTextExtent , \"jpeg:%s\" , filename ) ; if ( image -> compression == JPEG2000Compression ) ( void ) FormatLocaleString ( read_info -> filename , MaxTextExtent , \"j2k:%s\" , filename ) ; jpeg_image = ReadImage ( read_info , exception ) ; if ( jpeg_image != ( Image * ) NULL ) { ResetImagePropertyIterator ( image ) ; property = GetNextImageProperty ( image ) ; while ( property != ( const char * ) NULL ) { ( void ) SetImageProperty ( jpeg_image , property , GetImageProperty ( image , property ) ) ; property = GetNextImageProperty ( image ) ; } AppendImageToList ( & images , jpeg_image ) ; } ( void ) RelinquishUniqueFileResource ( filename ) ; } read_info = DestroyImageInfo ( read_info ) ; image = DestroyImage ( image ) ; return ( GetFirstImageInList ( images ) ) ; } if ( info . depth != ( 1UL * MAGICKCORE_QUANTUM_DEPTH ) ) { QuantumAny range ; size_t length ; length = ( size_t ) ( GetQuantumRange ( info . depth ) + 1 ) ; info . scale = ( Quantum * ) AcquireQuantumMemory ( length , sizeof ( * info . scale ) ) ; if ( info . scale == ( Quantum * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; range = GetQuantumRange ( info . depth ) ; for ( i = 0 ; i <= ( ssize_t ) GetQuantumRange ( info . depth ) ; i ++ ) info . scale [ i ] = ScaleAnyToQuantum ( ( size_t ) i , range ) ; } if ( image -> compression == RLECompression ) { size_t length ; unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { MagickOffsetType offset ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) + 8 ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } } for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { if ( image_info -> ping != MagickFalse ) break ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; image -> depth = info . depth ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; break ; } image -> colorspace = RGBColorspace ; if ( ( image -> colormap == ( PixelPacket * ) NULL ) && ( info . samples_per_pixel == 1 ) ) { int index ; size_t one ; one = 1 ; if ( colors == 0 ) colors = one << info . depth ; if ( AcquireImageColormap ( image , colors ) == MagickFalse ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( redmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = redmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( Quantum ) index ; } if ( greenmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = greenmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . green = ( Quantum ) index ; } if ( bluemap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = bluemap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . blue = ( Quantum ) index ; } if ( graymap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = graymap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( Quantum ) index ; image -> colormap [ i ] . green = ( Quantum ) index ; image -> colormap [ i ] . blue = ( Quantum ) index ; } } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; stream_info -> remaining = ( size_t ) ReadBlobLSBLong ( image ) ; if ( ( tag != 0xFFFEE000 ) || ( stream_info -> remaining <= 64 ) || ( EOFBlob ( image ) != MagickFalse ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; stream_info -> count = 0 ; stream_info -> segment_count = ReadBlobLSBLong ( image ) ; for ( i = 0 ; i < 15 ; i ++ ) stream_info -> segments [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; stream_info -> remaining -= 64 ; if ( stream_info -> segment_count > 1 ) { info . bytes_per_pixel = 1 ; info . depth = 8 ; if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , stream_info -> offsets [ 0 ] + stream_info -> segments [ 0 ] , SEEK_SET ) ; } } if ( ( info . samples_per_pixel > 1 ) && ( image -> interlace == PlaneInterlace ) ) { register ssize_t x ; register PixelPacket * q ; ssize_t y ; for ( i = 0 ; i < ( ssize_t ) info . samples_per_pixel ; i ++ ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( ( int ) i ) { case 0 : { SetPixelRed ( q , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) ) ; break ; } case 1 : { SetPixelGreen ( q , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) ) ; break ; } case 2 : { SetPixelBlue ( q , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) ) ; break ; } case 3 : { SetPixelAlpha ( q , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) ) ; break ; } default : break ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } } else { const char * option ; option = GetImageOption ( image_info , \"dcm:display-range\" ) ; if ( option != ( const char * ) NULL ) { if ( LocaleCompare ( option , \"reset\" ) == 0 ) info . window_width = 0 ; } option = GetImageOption ( image_info , \"dcm:window\" ) ; if ( option != ( char * ) NULL ) { GeometryInfo geometry_info ; MagickStatusType flags ; flags = ParseGeometry ( option , & geometry_info ) ; if ( flags & RhoValue ) info . window_center = geometry_info . rho ; if ( flags & SigmaValue ) info . window_width = geometry_info . sigma ; info . rescale = MagickTrue ; } option = GetImageOption ( image_info , \"dcm:rescale\" ) ; if ( option != ( char * ) NULL ) info . rescale = IsStringTrue ( option ) ; if ( ( info . window_center != 0 ) && ( info . window_width == 0 ) ) info . window_width = info . window_center ; status = ReadDCMPixels ( image , & info , stream_info , MagickTrue , exception ) ; if ( ( status != MagickFalse ) && ( stream_info -> segment_count > 1 ) ) { if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , stream_info -> offsets [ 0 ] + stream_info -> segments [ 1 ] , SEEK_SET ) ; ( void ) ReadDCMPixels ( image , & info , stream_info , MagickFalse , exception ) ; } } if ( SetImageGray ( image , exception ) != MagickFalse ) ( void ) SetImageColorspace ( image , GRAYColorspace ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( number_scenes - 1 ) ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , message ) \\\\\\n{ <S2SV_ModEnd> if ( data <S2SV_ModStart> ) ) ; \\\\\\n} <S2SV_ModEnd> char explicit_vr [ <S2SV_ModStart> image ) ) ThrowDCMException <S2SV_ModEnd> ( CorruptImageError ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19079\n\n```\nCWE-401 static ssize_t qrtr_tun_write_iter ( struct kiocb * iocb , struct iov_iter * from ) { struct file * filp = iocb -> ki_filp ; struct qrtr_tun * tun = filp -> private_data ; size_t len = iov_iter_count ( from ) ; ssize_t ret ; void * kbuf ; kbuf = kzalloc ( len , GFP_KERNEL ) ; if ( ! kbuf ) return - ENOMEM ; <S2SV_StartBug> if ( ! copy_from_iter_full ( kbuf , len , from ) ) <S2SV_EndBug> <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> ret = qrtr_endpoint_post ( & tun -> ep , kbuf , len ) ; <S2SV_StartBug> return ret < 0 ? ret : len ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> from ) ) { kfree ( kbuf ) ; <S2SV_ModStart> - EFAULT ; } <S2SV_ModStart> len ) ; kfree ( kbuf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19083\n\n```\nCWE-401 struct clock_source * dcn20_clock_source_create ( struct dc_context * ctx , struct dc_bios * bios , enum clock_source_id id , const struct dce110_clk_src_regs * regs , bool dp_clk_src ) { struct dce110_clk_src * clk_src = kzalloc ( sizeof ( struct dce110_clk_src ) , GFP_KERNEL ) ; if ( ! clk_src ) return NULL ; if ( dcn20_clk_src_construct ( clk_src , ctx , bios , id , regs , & cs_shift , & cs_mask ) ) { clk_src -> base . dp_clk_src = dp_clk_src ; return & clk_src -> base ; } <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base ; } kfree ( clk_src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14398\n\n```\nCWE-835 rfbBool ReadFromRFBServer ( rfbClient * client , char * out , unsigned int n ) <S2SV_StartBug> { <S2SV_EndBug> # undef DEBUG_READ_EXACT # ifdef DEBUG_READ_EXACT char * oout = out ; unsigned int nn = n ; rfbClientLog ( \"ReadFromRFBServer<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , n ) ; # endif if ( ! out ) return FALSE ; if ( client -> serverPort == - 1 ) { rfbVNCRec * rec = client -> vncRec ; struct timeval tv ; if ( rec -> readTimestamp ) { rec -> readTimestamp = FALSE ; if ( ! fread ( & tv , sizeof ( struct timeval ) , 1 , rec -> file ) ) return FALSE ; tv . tv_sec = rfbClientSwap32IfLE ( tv . tv_sec ) ; tv . tv_usec = rfbClientSwap32IfLE ( tv . tv_usec ) ; if ( rec -> tv . tv_sec != 0 && ! rec -> doNotSleep ) { struct timeval diff ; diff . tv_sec = tv . tv_sec - rec -> tv . tv_sec ; diff . tv_usec = tv . tv_usec - rec -> tv . tv_usec ; if ( diff . tv_usec < 0 ) { diff . tv_sec -- ; diff . tv_usec += 1000000 ; } # ifndef WIN32 sleep ( diff . tv_sec ) ; usleep ( diff . tv_usec ) ; # else Sleep ( diff . tv_sec * 1000 + diff . tv_usec / 1000 ) ; # endif } rec -> tv = tv ; } return ( fread ( out , 1 , n , rec -> file ) != n ? FALSE : TRUE ) ; } if ( n <= client -> buffered ) { memcpy ( out , client -> bufoutptr , n ) ; client -> bufoutptr += n ; client -> buffered -= n ; # ifdef DEBUG_READ_EXACT goto hexdump ; # endif return TRUE ; } memcpy ( out , client -> bufoutptr , client -> buffered ) ; out += client -> buffered ; n -= client -> buffered ; client -> bufoutptr = client -> buf ; client -> buffered = 0 ; if ( n <= RFB_BUF_SIZE ) { while ( client -> buffered < n ) { int i ; if ( client -> tlsSession ) i = ReadFromTLS ( client , client -> buf + client -> buffered , RFB_BUF_SIZE - client -> buffered ) ; else # ifdef LIBVNCSERVER_HAVE_SASL if ( client -> saslconn ) i = ReadFromSASL ( client , client -> buf + client -> buffered , RFB_BUF_SIZE - client -> buffered ) ; else { # endif i = read ( client -> sock , client -> buf + client -> buffered , RFB_BUF_SIZE - client -> buffered ) ; # ifdef WIN32 if ( i < 0 ) errno = WSAGetLastError ( ) ; # endif # ifdef LIBVNCSERVER_HAVE_SASL } # endif if ( i <= 0 ) { if ( i < 0 ) { if ( errno == EWOULDBLOCK || errno == EAGAIN ) { <S2SV_StartBug> WaitForMessage ( client , 100000 ) ; <S2SV_EndBug> i = 0 ; } else { rfbClientErr ( \"read<S2SV_blank>(%d:<S2SV_blank>%s)\\\\n\" , errno , strerror ( errno ) ) ; return FALSE ; } } else { if ( errorMessageOnReadFailure ) { rfbClientLog ( \"VNC<S2SV_blank>server<S2SV_blank>closed<S2SV_blank>connection\\\\n\" ) ; } return FALSE ; } } client -> buffered += i ; } memcpy ( out , client -> bufoutptr , n ) ; client -> bufoutptr += n ; client -> buffered -= n ; } else { while ( n > 0 ) { int i ; if ( client -> tlsSession ) i = ReadFromTLS ( client , out , n ) ; else # ifdef LIBVNCSERVER_HAVE_SASL if ( client -> saslconn ) i = ReadFromSASL ( client , out , n ) ; else # endif i = read ( client -> sock , out , n ) ; if ( i <= 0 ) { if ( i < 0 ) { # ifdef WIN32 errno = WSAGetLastError ( ) ; # endif if ( errno == EWOULDBLOCK || errno == EAGAIN ) { <S2SV_StartBug> WaitForMessage ( client , 100000 ) ; <S2SV_EndBug> i = 0 ; } else { rfbClientErr ( \"read<S2SV_blank>(%s)\\\\n\" , strerror ( errno ) ) ; return FALSE ; } } else { if ( errorMessageOnReadFailure ) { rfbClientLog ( \"VNC<S2SV_blank>server<S2SV_blank>closed<S2SV_blank>connection\\\\n\" ) ; } return FALSE ; } } out += i ; n -= i ; } } # ifdef DEBUG_READ_EXACT hexdump : { unsigned int ii ; for ( ii = 0 ; ii < nn ; ii ++ ) fprintf ( stderr , \"%02x<S2SV_blank>\" , ( unsigned char ) oout [ ii ] ) ; fprintf ( stderr , \"\\\\n\" ) ; } # endif return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> n ) { const int USECS_WAIT_PER_RETRY = 100000 ; int retries = 0 ; <S2SV_ModStart> EAGAIN ) { if ( client -> readTimeout > 0 && ++ retries > ( client -> readTimeout * 1000 * 1000 / USECS_WAIT_PER_RETRY ) ) { rfbClientLog ( \"Connection<S2SV_blank>timed<S2SV_blank>out\\\\n\" ) ; return FALSE ; } <S2SV_ModStart> ( client , USECS_WAIT_PER_RETRY <S2SV_ModEnd> ) ; i <S2SV_ModStart> EAGAIN ) { if ( client -> readTimeout > 0 && ++ retries > ( client -> readTimeout * 1000 * 1000 / USECS_WAIT_PER_RETRY ) ) { rfbClientLog ( \"Connection<S2SV_blank>timed<S2SV_blank>out\\\\n\" ) ; return FALSE ; } <S2SV_ModStart> ( client , USECS_WAIT_PER_RETRY <S2SV_ModEnd> ) ; i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13051\n\n```\nCWE-125 static int rsvp_obj_print ( netdissect_options * ndo , const u_char * pptr , u_int plen , const u_char * tptr , const char * ident , u_int tlen , const struct rsvp_common_header * rsvp_com_header ) { const struct rsvp_object_header * rsvp_obj_header ; const u_char * obj_tptr ; union { const struct rsvp_obj_integrity_t * rsvp_obj_integrity ; const struct rsvp_obj_frr_t * rsvp_obj_frr ; } obj_ptr ; u_short rsvp_obj_len , rsvp_obj_ctype , obj_tlen , intserv_serv_tlen ; int hexdump , processed , padbytes , error_code , error_value , i , sigcheck ; union { float f ; uint32_t i ; } bw ; uint8_t namelen ; u_int action , subchannel ; while ( tlen >= sizeof ( struct rsvp_object_header ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct rsvp_object_header ) ) ; rsvp_obj_header = ( const struct rsvp_object_header * ) tptr ; rsvp_obj_len = EXTRACT_16BITS ( rsvp_obj_header -> length ) ; rsvp_obj_ctype = rsvp_obj_header -> ctype ; if ( rsvp_obj_len % 4 ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4\" , ident , rsvp_obj_len ) ) ; return - 1 ; } if ( rsvp_obj_len < sizeof ( struct rsvp_object_header ) ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>too<S2SV_blank>short<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%lu\" , ident , rsvp_obj_len , ( unsigned long ) sizeof ( const struct rsvp_object_header ) ) ) ; return - 1 ; } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>Object<S2SV_blank>(%u)<S2SV_blank>Flags:<S2SV_blank>[%s\" , ident , tok2str ( rsvp_obj_values , \"Unknown\" , rsvp_obj_header -> class_num ) , rsvp_obj_header -> class_num , ( ( rsvp_obj_header -> class_num ) & 0x80 ) ? \"ignore\" : \"reject\" ) ) ; if ( rsvp_obj_header -> class_num > 128 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ( ( rsvp_obj_header -> class_num ) & 0x40 ) ? \"and<S2SV_blank>forward\" : \"silently\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>if<S2SV_blank>unknown],<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( rsvp_ctype_values , \"Unknown\" , ( ( rsvp_obj_header -> class_num ) << 8 ) + rsvp_obj_ctype ) , rsvp_obj_ctype , rsvp_obj_len ) ) ; if ( tlen < rsvp_obj_len ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>goes<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>objects<S2SV_blank>TLV\" , ident ) ) ; return - 1 ; } obj_tptr = tptr + sizeof ( struct rsvp_object_header ) ; obj_tlen = rsvp_obj_len - sizeof ( struct rsvp_object_header ) ; if ( ! ND_TTEST2 ( * tptr , rsvp_obj_len ) ) return - 1 ; hexdump = FALSE ; switch ( rsvp_obj_header -> class_num ) { case RSVP_OBJ_SESSION : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + 5 ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in6_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + sizeof ( struct in6_addr ) + 1 ) , EXTRACT_16BITS ( obj_tptr + sizeof ( struct in6_addr ) + 2 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 36 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ip6addr_string ( ndo , obj_tptr + 20 ) ) ) ; obj_tlen -= 36 ; obj_tptr += 36 ; break ; case RSVP_CTYPE_14 : if ( obj_tlen < 26 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%08x,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ip6addr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 26 ; obj_tptr += 26 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : case RSVP_CTYPE_UNI_IPV4 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CONFIRM : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_NOTIFY_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SUGGESTED_LABEL : case RSVP_OBJ_UPSTREAM_LABEL : case RSVP_OBJ_RECOVERY_LABEL : case RSVP_OBJ_LABEL : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Generalized<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Waveband<S2SV_blank>ID:<S2SV_blank>%u%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>Label:<S2SV_blank>%u,<S2SV_blank>Stop<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_STYLE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Reservation<S2SV_blank>Style:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]\" , ident , tok2str ( rsvp_resstyle_values , \"Unknown\" , EXTRACT_24BITS ( obj_tptr + 1 ) ) , * ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TEMPLATE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \",%s<S2SV_blank>merge<S2SV_blank>capability\" , ( ( * ( obj_tptr + 4 ) ) & 0x80 ) ? \"no\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 4 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 6 ) ) & 0xfff ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Maximum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 8 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 10 ) ) & 0xfff ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum/Maximum<S2SV_blank>DLCI:<S2SV_blank>%u/%u,<S2SV_blank>%s%s<S2SV_blank>bit<S2SV_blank>DLCI\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0x7fffff , ( EXTRACT_32BITS ( obj_tptr + 8 ) ) & 0x7fffff , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 0 ) ? \"10\" : \"\" , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 2 ) ? \"23\" : \"\" ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>LSP<S2SV_blank>Encoding<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , tok2str ( gmpls_encoding_values , \"Unknown\" , * obj_tptr ) , * obj_tptr ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Switching<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Payload<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%04x)\" , ident , tok2str ( gmpls_switch_cap_values , \"Unknown\" , * ( obj_tptr + 1 ) ) , * ( obj_tptr + 1 ) , tok2str ( gmpls_payload_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RRO : case RSVP_OBJ_ERO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : while ( obj_tlen >= 4 ) { u_char length ; ND_TCHECK2 ( * obj_tptr , 4 ) ; length = * ( obj_tptr + 1 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_xro_values , \"Unknown<S2SV_blank>%u\" , RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) , length ) ) ; if ( length == 0 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>ERROR:<S2SV_blank>zero<S2SV_blank>length<S2SV_blank>ERO<S2SV_blank>subtype\" , ident ) ) ; break ; } switch ( RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) { u_char prefix_length ; case RSVP_OBJ_XRO_IPV4 : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; prefix_length = * ( obj_tptr + 6 ) ; if ( prefix_length != 32 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>Prefix<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>32\" , prefix_length ) ) ; goto invalid ; } ND_PRINT ( ( ndo , \",<S2SV_blank>%s,<S2SV_blank>%s/%u,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , RSVP_OBJ_XRO_MASK_LOOSE ( * obj_tptr ) ? \"Loose\" : \"Strict\" , ipaddr_string ( ndo , obj_tptr + 2 ) , * ( obj_tptr + 6 ) , bittok2str ( rsvp_obj_rro_flag_values , \"none\" , * ( obj_tptr + 7 ) ) ) ) ; break ; case RSVP_OBJ_XRO_LABEL : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x),<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%u\" , bittok2str ( rsvp_obj_rro_label_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) , tok2str ( rsvp_ctype_values , \"Unknown\" , * ( obj_tptr + 3 ) + 256 * RSVP_OBJ_RRO ) , * ( obj_tptr + 3 ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; } obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_HELLO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Instance:<S2SV_blank>0x%08x,<S2SV_blank>Destination<S2SV_blank>Instance:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RESTART_CAPABILITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Restart<S2SV_blank><S2SV_blank>Time:<S2SV_blank>%ums,<S2SV_blank>Recovery<S2SV_blank>Time:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SESSION_ATTRIBUTE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 4 ) return - 1 ; namelen = * ( obj_tptr + 3 ) ; if ( obj_tlen < 4 + namelen ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Session<S2SV_blank>Name:<S2SV_blank>\" , ident ) ) ; for ( i = 0 ; i < namelen ; i ++ ) safeputchar ( ndo , * ( obj_tptr + 4 + i ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x)\" , ident , ( int ) * obj_tptr , ( int ) * ( obj_tptr + 1 ) , bittok2str ( rsvp_session_attribute_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 + * ( obj_tptr + 3 ) ; obj_tptr += 4 + * ( obj_tptr + 3 ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_GENERALIZED_UNI : switch ( rsvp_obj_ctype ) { int subobj_type , af , subobj_len , total_subobj_len ; case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; total_subobj_len = obj_tlen ; while ( total_subobj_len > 0 ) { <S2SV_StartBug> subobj_len = EXTRACT_16BITS ( obj_tptr ) ; <S2SV_EndBug> subobj_type = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) >> 8 ; af = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) & 0x00FF ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>AF:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_generalized_uni_values , \"Unknown\" , subobj_type ) , subobj_type , tok2str ( af_values , \"Unknown\" , af ) , af , subobj_len ) ) ; <S2SV_StartBug> if ( subobj_len == 0 ) <S2SV_EndBug> goto invalid ; switch ( subobj_type ) { case RSVP_GEN_UNI_SUBOBJ_SOURCE_TNA_ADDRESS : case RSVP_GEN_UNI_SUBOBJ_DESTINATION_TNA_ADDRESS : switch ( af ) { case AFNUM_INET : if ( subobj_len < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv4<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_INET6 : if ( subobj_len < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv6<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_NSAP : if ( subobj_len ) { hexdump = TRUE ; } break ; } break ; case RSVP_GEN_UNI_SUBOBJ_DIVERSITY : if ( subobj_len ) { hexdump = TRUE ; } break ; case RSVP_GEN_UNI_SUBOBJ_EGRESS_LABEL : if ( subobj_len < 16 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>U-bit:<S2SV_blank>%x,<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u,<S2SV_blank>Logical<S2SV_blank>port<S2SV_blank>id:<S2SV_blank>%u,<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 31 ) , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0xFF ) , EXTRACT_32BITS ( obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 12 ) ) ) ; break ; case RSVP_GEN_UNI_SUBOBJ_SERVICE_LEVEL : if ( subobj_len < 8 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Service<S2SV_blank>level:<S2SV_blank>%u\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 24 ) ) ; break ; default : hexdump = TRUE ; break ; } total_subobj_len -= subobj_len ; obj_tptr += subobj_len ; obj_tlen += subobj_len ; } if ( total_subobj_len ) { hexdump = TRUE ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RSVP_HOP : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; if ( obj_tlen ) hexdump = TRUE ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 16 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; hexdump = TRUE ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_TIME_VALUES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Refresh<S2SV_blank>Period:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TSPEC : case RSVP_OBJ_ADSPEC : case RSVP_OBJ_FLOWSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Msg-Version:<S2SV_blank>%u,<S2SV_blank>length:<S2SV_blank>%u\" , ident , ( * obj_tptr & 0xf0 ) >> 4 , EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( obj_tlen >= 4 ) { intserv_serv_tlen = EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Service<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>break<S2SV_blank>bit<S2SV_blank>%s<S2SV_blank>set,<S2SV_blank>Service<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_intserv_service_type_values , \"unknown\" , * ( obj_tptr ) ) , * ( obj_tptr ) , ( * ( obj_tptr + 1 ) & 0x80 ) ? \"\" : \"not\" , intserv_serv_tlen ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( intserv_serv_tlen >= 4 ) { processed = rsvp_intserv_print ( ndo , obj_tptr , obj_tlen ) ; if ( processed == 0 ) break ; obj_tlen -= processed ; intserv_serv_tlen -= processed ; obj_tptr += processed ; } } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FILTERSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flow<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_24BITS ( obj_tptr + 17 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FASTREROUTE : obj_ptr . rsvp_obj_frr = ( const struct rsvp_obj_frr_t * ) obj_tptr ; switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_frr_t ) ) return - 1 ; bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include-any:<S2SV_blank>0x%08x,<S2SV_blank>Exclude-any:<S2SV_blank>0x%08x,<S2SV_blank>Include-all:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_all ) ) ) ; obj_tlen -= sizeof ( struct rsvp_obj_frr_t ) ; obj_tptr += sizeof ( struct rsvp_obj_frr_t ) ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 16 ) return - 1 ; bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include<S2SV_blank>Colors:<S2SV_blank>0x%08x,<S2SV_blank>Exclude<S2SV_blank>Colors:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_DETOUR : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : while ( obj_tlen >= 8 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>PLR-ID:<S2SV_blank>%s,<S2SV_blank>Avoid-Node-ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CLASSTYPE : case RSVP_OBJ_CLASSTYPE_OLD : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>CT:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) & 0x7 ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ERROR_SPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; error_code = * ( obj_tptr + 5 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 6 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + 4 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE : case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE_OLD : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_diffserv_te_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>Unknown<S2SV_blank>Error<S2SV_blank>Value<S2SV_blank>(%u)\" , error_value ) ) ; break ; } obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; error_code = * ( obj_tptr + 17 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 18 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + 16 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : break ; } obj_tlen -= 20 ; obj_tptr += 20 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_PROPERTIES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; padbytes = EXTRACT_16BITS ( obj_tptr + 2 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>TLV<S2SV_blank>count:<S2SV_blank>%u,<S2SV_blank>padding<S2SV_blank>bytes:<S2SV_blank>%u\" , ident , EXTRACT_16BITS ( obj_tptr ) , padbytes ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 2 + padbytes ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(0x%02x),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_prop_tlv_values , \"unknown\" , * obj_tptr ) , * obj_tptr , * ( obj_tptr + 1 ) ) ) ; if ( obj_tlen < * ( obj_tptr + 1 ) ) return - 1 ; if ( * ( obj_tptr + 1 ) < 2 ) return - 1 ; print_unknown_data ( ndo , obj_tptr + 2 , \"\\\\n\\\\t\\\\t\" , * ( obj_tptr + 1 ) - 2 ) ; obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_MESSAGE_ID : case RSVP_OBJ_MESSAGE_ID_ACK : case RSVP_OBJ_MESSAGE_ID_LIST : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[0x%02x],<S2SV_blank>epoch:<S2SV_blank>%u\" , ident , * obj_tptr , EXTRACT_24BITS ( obj_tptr + 1 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message-ID<S2SV_blank>0x%08x<S2SV_blank>(%u)\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_INTEGRITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_integrity_t ) ) return - 1 ; obj_ptr . rsvp_obj_integrity = ( const struct rsvp_obj_integrity_t * ) obj_tptr ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Key-ID<S2SV_blank>0x%04x%08x,<S2SV_blank>Sequence<S2SV_blank>0x%08x%08x,<S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , EXTRACT_16BITS ( obj_ptr . rsvp_obj_integrity -> key_id ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> key_id + 2 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence + 4 ) , bittok2str ( rsvp_obj_integrity_flag_values , \"none\" , obj_ptr . rsvp_obj_integrity -> flags ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>MD5-sum<S2SV_blank>0x%08x%08x%08x%08x<S2SV_blank>\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 4 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 8 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 12 ) ) ) ; sigcheck = signature_verify ( ndo , pptr , plen , obj_ptr . rsvp_obj_integrity -> digest , rsvp_clear_checksum , rsvp_com_header ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , tok2str ( signature_check_values , \"Unknown\" , sigcheck ) ) ) ; obj_tlen += sizeof ( struct rsvp_obj_integrity_t ) ; obj_tptr += sizeof ( struct rsvp_obj_integrity_t ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ADMIN_STATUS : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , bittok2str ( rsvp_obj_admin_status_flag_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_SET : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; action = ( EXTRACT_16BITS ( obj_tptr ) >> 8 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Action:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_label_set_action_values , \"Unknown\" , action ) , action , ( ( EXTRACT_32BITS ( obj_tptr ) & 0x7F ) ) ) ) ; switch ( action ) { case LABEL_SET_INCLUSIVE_RANGE : case LABEL_SET_EXCLUSIVE_RANGE : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>range:<S2SV_blank>%u,<S2SV_blank>End<S2SV_blank>range:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : obj_tlen -= 4 ; obj_tptr += 4 ; subchannel = 1 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subchannel<S2SV_blank>#%u:<S2SV_blank>%u\" , ident , subchannel , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; subchannel ++ ; } break ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_S2L : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SCOPE : case RSVP_OBJ_POLICY_DATA : case RSVP_OBJ_ACCEPT_LABEL_SET : case RSVP_OBJ_PROTECTION : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 || hexdump == TRUE ) print_unknown_data ( ndo , tptr + sizeof ( struct rsvp_object_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , rsvp_obj_len - sizeof ( struct rsvp_object_header ) ) ; tptr += rsvp_obj_len ; tlen -= rsvp_obj_len ; } return 0 ; invalid : ND_PRINT ( ( ndo , \"%s\" , istr ) ) ; return - 1 ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( total_subobj_len < 4 ) goto invalid ; <S2SV_ModStart> if ( subobj_len < 4 || subobj_len > total_subobj_len <S2SV_ModEnd> ) goto invalid\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 u_int chdlc_print ( netdissect_options * ndo , register const u_char * p , u_int length ) { u_int proto ; const u_char * bp = p ; if ( length < CHDLC_HDRLEN ) goto trunc ; ND_TCHECK2 ( * p , CHDLC_HDRLEN ) ; proto = EXTRACT_16BITS ( & p [ 2 ] ) ; if ( ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"%s,<S2SV_blank>ethertype<S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>length<S2SV_blank>%u:<S2SV_blank>\" , tok2str ( chdlc_cast_values , \"0x%02x\" , p [ 0 ] ) , tok2str ( ethertype_values , \"Unknown\" , proto ) , proto , length ) ) ; } length -= CHDLC_HDRLEN ; p += CHDLC_HDRLEN ; switch ( proto ) { case ETHERTYPE_IP : ip_print ( ndo , p , length ) ; break ; case ETHERTYPE_IPV6 : ip6_print ( ndo , p , length ) ; break ; case CHDLC_TYPE_SLARP : chdlc_slarp_print ( ndo , p , length ) ; break ; # if 0 case CHDLC_TYPE_CDP : chdlc_cdp_print ( p , length ) ; break ; # endif case ETHERTYPE_MPLS : case ETHERTYPE_MPLS_MULTI : mpls_print ( ndo , p , length ) ; break ; case ETHERTYPE_ISO : if ( length < 2 ) goto trunc ; ND_TCHECK_16BITS ( p ) ; if ( * ( p + 1 ) == 0x81 || * ( p + 1 ) == 0x82 || * ( p + 1 ) == 0x83 ) <S2SV_StartBug> isoclns_print ( ndo , p + 1 , length - 1 , ndo -> ndo_snapend - p - 1 ) ; <S2SV_EndBug> else <S2SV_StartBug> isoclns_print ( ndo , p , length , ndo -> ndo_snapend - p ) ; <S2SV_EndBug> break ; default : if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"unknown<S2SV_blank>CHDLC<S2SV_blank>protocol<S2SV_blank>(0x%04x)\" , proto ) ) ; break ; } return ( CHDLC_HDRLEN ) ; trunc : ND_PRINT ( ( ndo , \"[|chdlc]\" ) ) ; return ndo -> ndo_snapend - bp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length - 1 <S2SV_ModEnd> ) ; else <S2SV_ModStart> p , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9421\n\n```\nCWE-000 bool_t auth_gssapi_unwrap_data ( OM_uint32 * major , OM_uint32 * minor , gss_ctx_id_t context , uint32_t seq_num , XDR * in_xdrs , bool_t ( * xdr_func ) ( ) , caddr_t xdr_ptr ) { gss_buffer_desc in_buf , out_buf ; XDR temp_xdrs ; uint32_t verf_seq_num ; int conf , qop ; unsigned int length ; PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>starting\\\\n\" ) ) ; * major = GSS_S_COMPLETE ; * minor = 0 ; in_buf . value = NULL ; out_buf . value = NULL ; if ( ! xdr_bytes ( in_xdrs , ( char * * ) & in_buf . value , & length , ( unsigned int ) - 1 ) ) { PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>deserializing<S2SV_blank>encrypted<S2SV_blank>data<S2SV_blank>failed\\\\n\" ) ) ; temp_xdrs . x_op = XDR_FREE ; ( void ) xdr_bytes ( & temp_xdrs , ( char * * ) & in_buf . value , & length , ( unsigned int ) - 1 ) ; return FALSE ; } in_buf . length = length ; * major = gss_unseal ( minor , context , & in_buf , & out_buf , & conf , & qop ) ; free ( in_buf . value ) ; if ( * major != GSS_S_COMPLETE ) return FALSE ; PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>%llu<S2SV_blank>bytes<S2SV_blank>data,<S2SV_blank>%llu<S2SV_blank>bytes<S2SV_blank>sealed\\\\n\" , ( unsigned long long ) out_buf . length , ( unsigned long long ) in_buf . length ) ) ; xdrmem_create ( & temp_xdrs , out_buf . value , out_buf . length , XDR_DECODE ) ; if ( ! xdr_u_int32 ( & temp_xdrs , & verf_seq_num ) ) { PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>deserializing<S2SV_blank>verf_seq_num<S2SV_blank>failed\\\\n\" ) ) ; gss_release_buffer ( minor , & out_buf ) ; XDR_DESTROY ( & temp_xdrs ) ; return FALSE ; } if ( verf_seq_num != seq_num ) { PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>seq<S2SV_blank>%d<S2SV_blank>specified,<S2SV_blank>read<S2SV_blank>%d\\\\n\" , seq_num , verf_seq_num ) ) ; gss_release_buffer ( minor , & out_buf ) ; XDR_DESTROY ( & temp_xdrs ) ; return FALSE ; } PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>unwrap<S2SV_blank>seq_num<S2SV_blank>%d<S2SV_blank>okay\\\\n\" , verf_seq_num ) ) ; if ( ! ( * xdr_func ) ( & temp_xdrs , xdr_ptr ) ) { PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>deserializing<S2SV_blank>arguments<S2SV_blank>failed\\\\n\" ) ) ; gss_release_buffer ( minor , & out_buf ) ; <S2SV_StartBug> xdr_free ( xdr_func , xdr_ptr ) ; <S2SV_EndBug> XDR_DESTROY ( & temp_xdrs ) ; return FALSE ; } PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>succeeding\\\\n\\\\n\" ) ) ; gss_release_buffer ( minor , & out_buf ) ; XDR_DESTROY ( & temp_xdrs ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_buf ) ; <S2SV_ModEnd> XDR_DESTROY ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1237\n\n```\nCWE-284 static __be32 nfsacld_proc_setacl ( struct svc_rqst * rqstp , struct nfsd3_setaclargs * argp , struct nfsd_attrstat * resp ) { struct inode * inode ; svc_fh * fh ; __be32 nfserr = 0 ; int error ; dprintk ( \"nfsd:<S2SV_blank>SETACL(2acl)<S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , SVCFH_fmt ( & argp -> fh ) ) ; fh = fh_copy ( & resp -> fh , & argp -> fh ) ; nfserr = fh_verify ( rqstp , & resp -> fh , 0 , NFSD_MAY_SATTR ) ; if ( nfserr ) goto out ; inode = d_inode ( fh -> fh_dentry ) ; <S2SV_StartBug> if ( ! IS_POSIXACL ( inode ) || ! inode -> i_op -> set_acl ) { <S2SV_EndBug> error = - EOPNOTSUPP ; goto out_errno ; <S2SV_StartBug> } <S2SV_EndBug> error = fh_want_write ( fh ) ; if ( error ) goto out_errno ; <S2SV_StartBug> error = inode -> i_op -> set_acl ( inode , argp -> acl_access , ACL_TYPE_ACCESS ) ; <S2SV_EndBug> if ( error ) goto out_drop_write ; <S2SV_StartBug> error = inode -> i_op -> set_acl ( inode , argp -> acl_default , <S2SV_EndBug> ACL_TYPE_DEFAULT ) ; if ( error ) goto out_drop_write ; fh_drop_write ( fh ) ; nfserr = fh_getattr ( fh , & resp -> stat ) ; out : posix_acl_release ( argp -> acl_access ) ; posix_acl_release ( argp -> acl_default ) ; return nfserr ; <S2SV_StartBug> out_drop_write : <S2SV_EndBug> fh_drop_write ( fh ) ; out_errno : nfserr = nfserrno ( error ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fh_dentry ) ; error = fh_want_write ( fh ) ; if ( error ) <S2SV_ModEnd> goto out_errno ; <S2SV_ModStart> goto out_errno ; fh_lock ( fh ) ; error = set_posix_acl ( inode , ACL_TYPE_ACCESS <S2SV_ModEnd> , argp -> <S2SV_ModStart> argp -> acl_access ) ; if ( error ) goto out_drop_lock ; error = set_posix_acl ( inode , ACL_TYPE_DEFAULT <S2SV_ModEnd> , argp -> <S2SV_ModStart> argp -> acl_default ) ; if ( error ) goto out_drop_lock ; fh_unlock ( fh ) <S2SV_ModEnd> ; fh_drop_write ( <S2SV_ModStart> return nfserr ; out_drop_lock : fh_unlock ( fh ) ; <S2SV_ModEnd> fh_drop_write ( fh\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7022\n\n```\nCWE-119 static int g2m_init_buffers ( G2MContext * c ) { int aligned_height ; if ( ! c -> framebuf || c -> old_width < c -> width || c -> old_height < c -> height ) { <S2SV_StartBug> c -> framebuf_stride = FFALIGN ( c -> width * 3 , 16 ) ; <S2SV_EndBug> <S2SV_StartBug> aligned_height = FFALIGN ( c -> height , 16 ) ; <S2SV_EndBug> av_free ( c -> framebuf ) ; c -> framebuf = av_mallocz ( c -> framebuf_stride * aligned_height ) ; if ( ! c -> framebuf ) return AVERROR ( ENOMEM ) ; } if ( ! c -> synth_tile || ! c -> jpeg_tile || c -> old_tile_w < c -> tile_width || c -> old_tile_h < c -> tile_height ) { c -> tile_stride = FFALIGN ( c -> tile_width , 16 ) * 3 ; aligned_height = FFALIGN ( c -> tile_height , 16 ) ; av_free ( c -> synth_tile ) ; av_free ( c -> jpeg_tile ) ; av_free ( c -> kempf_buf ) ; av_free ( c -> kempf_flags ) ; c -> synth_tile = av_mallocz ( c -> tile_stride * aligned_height ) ; c -> jpeg_tile = av_mallocz ( c -> tile_stride * aligned_height ) ; c -> kempf_buf = av_mallocz ( ( c -> tile_width + 1 ) * aligned_height + FF_INPUT_BUFFER_PADDING_SIZE ) ; c -> kempf_flags = av_mallocz ( c -> tile_width * aligned_height ) ; if ( ! c -> synth_tile || ! c -> jpeg_tile || ! c -> kempf_buf || ! c -> kempf_flags ) return AVERROR ( ENOMEM ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c -> width + 15 <S2SV_ModEnd> , 16 ) <S2SV_ModStart> , 16 ) * 3 ; aligned_height = <S2SV_ModEnd> c -> height <S2SV_ModStart> c -> height + 15 <S2SV_ModEnd> ; av_free (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 void impeg2d_peek_next_start_code ( dec_state_t * ps_dec ) { stream_t * ps_stream ; ps_stream = & ps_dec -> s_bit_stream ; impeg2d_bit_stream_flush_to_byte_boundary ( ps_stream ) ; while ( ( impeg2d_bit_stream_nxt ( ps_stream , START_CODE_PREFIX_LEN ) != START_CODE_PREFIX ) <S2SV_StartBug> && ( ps_dec -> s_bit_stream . u4_offset <= ps_dec -> s_bit_stream . u4_max_offset ) ) <S2SV_EndBug> { impeg2d_bit_stream_get ( ps_stream , 8 ) ; } return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s_bit_stream . u4_offset < <S2SV_ModEnd> ps_dec -> s_bit_stream\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 int _yr_scan_verify_re_match ( YR_SCAN_CONTEXT * context , YR_AC_MATCH * ac_match , uint8_t * data , size_t data_size , size_t data_base , size_t offset ) { CALLBACK_ARGS callback_args ; RE_EXEC_FUNC exec ; int forward_matches = - 1 ; int backward_matches = - 1 ; int flags = 0 ; if ( STRING_IS_GREEDY_REGEXP ( ac_match -> string ) ) flags |= RE_FLAGS_GREEDY ; if ( STRING_IS_NO_CASE ( ac_match -> string ) ) flags |= RE_FLAGS_NO_CASE ; if ( STRING_IS_DOT_ALL ( ac_match -> string ) ) flags |= RE_FLAGS_DOT_ALL ; if ( STRING_IS_FAST_REGEXP ( ac_match -> string ) ) exec = yr_re_fast_exec ; else exec = yr_re_exec ; if ( STRING_IS_ASCII ( ac_match -> string ) ) { forward_matches = exec ( ac_match -> forward_code , data + offset , data_size - offset , <S2SV_StartBug> offset > 0 ? flags | RE_FLAGS_NOT_AT_START : flags , <S2SV_EndBug> NULL , NULL ) ; } if ( STRING_IS_WIDE ( ac_match -> string ) && forward_matches == - 1 ) { flags |= RE_FLAGS_WIDE ; forward_matches = exec ( ac_match -> forward_code , data + offset , data_size - offset , <S2SV_StartBug> offset > 0 ? flags | RE_FLAGS_NOT_AT_START : flags , <S2SV_EndBug> NULL , NULL ) ; } switch ( forward_matches ) { case - 1 : return ERROR_SUCCESS ; case - 2 : return ERROR_INSUFFICIENT_MEMORY ; case - 3 : return ERROR_TOO_MANY_MATCHES ; case - 4 : return ERROR_TOO_MANY_RE_FIBERS ; case - 5 : return ERROR_INTERNAL_FATAL_ERROR ; } if ( forward_matches == 0 && ac_match -> backward_code == NULL ) return ERROR_SUCCESS ; callback_args . string = ac_match -> string ; callback_args . context = context ; callback_args . data = data ; callback_args . data_size = data_size ; callback_args . data_base = data_base ; callback_args . forward_matches = forward_matches ; callback_args . full_word = STRING_IS_FULL_WORD ( ac_match -> string ) ; if ( ac_match -> backward_code != NULL ) { backward_matches = exec ( ac_match -> backward_code , <S2SV_StartBug> data + offset , <S2SV_EndBug> offset , flags | RE_FLAGS_BACKWARDS | RE_FLAGS_EXHAUSTIVE , _yr_scan_match_callback , ( void * ) & callback_args ) ; switch ( backward_matches ) { case - 2 : return ERROR_INSUFFICIENT_MEMORY ; case - 3 : return ERROR_TOO_MANY_MATCHES ; case - 4 : return ERROR_TOO_MANY_RE_FIBERS ; case - 5 : return ERROR_INTERNAL_FATAL_ERROR ; } } else { FAIL_ON_ERROR ( _yr_scan_match_callback ( data + offset , 0 , flags , & callback_args ) ) ; } return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> offset , offset , <S2SV_ModEnd> flags , NULL <S2SV_ModStart> offset , offset , <S2SV_ModEnd> flags , NULL <S2SV_ModStart> , data + offset , data_size -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int __gfs2_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int error ; int len ; char * data ; const char * name = gfs2_acl_name ( type ) ; if ( acl && acl -> a_count > GFS2_ACL_MAX_ENTRIES ( GFS2_SB ( inode ) ) ) return - E2BIG ; if ( type == ACL_TYPE_ACCESS ) { umode_t mode = inode -> i_mode ; <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; if ( error == 0 ) acl = NULL ; <S2SV_StartBug> if ( mode != inode -> i_mode ) { <S2SV_EndBug> inode -> i_mode = mode ; mark_inode_dirty ( inode ) ; <S2SV_StartBug> } <S2SV_EndBug> } if ( acl ) { len = posix_acl_to_xattr ( & init_user_ns , acl , NULL , 0 ) ; if ( len == 0 ) return 0 ; data = kmalloc ( len , GFP_NOFS ) ; if ( data == NULL ) return - ENOMEM ; error = posix_acl_to_xattr ( & init_user_ns , acl , data , len ) ; if ( error < 0 ) goto out ; } else { data = NULL ; len = 0 ; } error = __gfs2_xattr_set ( inode , name , data , len , 0 , GFS2_EATYPE_SYS ) ; if ( error ) goto out ; set_cached_acl ( inode , type , acl ) ; out : kfree ( data ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; error = posix_acl_update_mode ( inode , & inode -> i_mode , & acl ) ; if ( error ) return error <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> i_mode ) <S2SV_ModEnd> mark_inode_dirty ( inode <S2SV_ModStart> inode ) ; <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11506\n\n```\nCWE-119 int sr_do_ioctl ( Scsi_CD * cd , struct packet_command * cgc ) { struct scsi_device * SDev ; struct scsi_sense_hdr sshdr ; int result , err = 0 , retries = 0 ; <S2SV_StartBug> SDev = cd -> device ; <S2SV_EndBug> retry : if ( ! scsi_block_when_processing_errors ( SDev ) ) { err = - ENODEV ; goto out ; } result = scsi_execute ( SDev , cgc -> cmd , cgc -> data_direction , cgc -> buffer , cgc -> buflen , <S2SV_StartBug> ( unsigned char * ) cgc -> sense , & sshdr , <S2SV_EndBug> cgc -> timeout , IOCTL_RETRIES , 0 , 0 , NULL ) ; if ( driver_byte ( result ) != 0 ) { switch ( sshdr . sense_key ) { case UNIT_ATTENTION : SDev -> changed = 1 ; if ( ! cgc -> quiet ) sr_printk ( KERN_INFO , cd , \"disc<S2SV_blank>change<S2SV_blank>detected.\\\\n\" ) ; if ( retries ++ < 10 ) goto retry ; err = - ENOMEDIUM ; break ; case NOT_READY : if ( sshdr . asc == 0x04 && sshdr . ascq == 0x01 ) { if ( ! cgc -> quiet ) sr_printk ( KERN_INFO , cd , \"CDROM<S2SV_blank>not<S2SV_blank>ready<S2SV_blank>yet.\\\\n\" ) ; if ( retries ++ < 10 ) { ssleep ( 2 ) ; goto retry ; } else { err = - ENOMEDIUM ; break ; } } if ( ! cgc -> quiet ) sr_printk ( KERN_INFO , cd , \"CDROM<S2SV_blank>not<S2SV_blank>ready.<S2SV_blank><S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>there<S2SV_blank>\" \"is<S2SV_blank>a<S2SV_blank>disc<S2SV_blank>in<S2SV_blank>the<S2SV_blank>drive.\\\\n\" ) ; err = - ENOMEDIUM ; break ; case ILLEGAL_REQUEST : err = - EIO ; if ( sshdr . asc == 0x20 && sshdr . ascq == 0x00 ) err = - EDRIVE_CANT_DO_THIS ; break ; default : err = - EIO ; } } out : cgc -> stat = err ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; unsigned char sense_buffer [ SCSI_SENSE_BUFFERSIZE ] , * senseptr = NULL ; <S2SV_ModStart> cd -> device ; if ( cgc -> sense ) senseptr = sense_buffer <S2SV_ModStart> -> buflen , senseptr , & sshdr , cgc -> timeout , IOCTL_RETRIES , 0 , 0 , NULL ) ; if ( cgc -> sense ) memcpy ( cgc -> sense , sense_buffer , sizeof ( * <S2SV_ModEnd> cgc -> sense <S2SV_ModStart> cgc -> sense ) <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 void main_cleanup ( ) { # ifdef USE_OS_THREADS CLI * c ; unsigned i , threads ; THREAD_ID * thread_list ; CRYPTO_THREAD_write_lock ( stunnel_locks [ LOCK_THREAD_LIST ] ) ; threads = 0 ; for ( c = thread_head ; c ; c = c -> thread_next ) threads ++ ; thread_list = str_alloc ( ( threads + 1 ) * sizeof ( THREAD_ID ) ) ; i = 0 ; for ( c = thread_head ; c ; c = c -> thread_next ) { thread_list [ i ++ ] = c -> thread_id ; s_log ( LOG_DEBUG , \"Terminating<S2SV_blank>a<S2SV_blank>thread<S2SV_blank>for<S2SV_blank>[%s]\" , c -> opt -> servname ) ; } if ( cron_thread_id ) { thread_list [ threads ++ ] = cron_thread_id ; s_log ( LOG_DEBUG , \"Terminating<S2SV_blank>the<S2SV_blank>cron<S2SV_blank>thread\" ) ; } CRYPTO_THREAD_unlock ( stunnel_locks [ LOCK_THREAD_LIST ] ) ; if ( threads ) { s_log ( LOG_NOTICE , \"Terminating<S2SV_blank>%u<S2SV_blank>service<S2SV_blank>thread(s)\" , threads ) ; writesocket ( terminate_pipe [ 1 ] , \"\" , 1 ) ; for ( i = 0 ; i < threads ; ++ i ) { # ifdef USE_PTHREAD if ( pthread_join ( thread_list [ i ] , NULL ) ) s_log ( LOG_ERR , \"pthread_join()<S2SV_blank>failed\" ) ; # endif # ifdef USE_WIN32 if ( WaitForSingleObject ( thread_list [ i ] , INFINITE ) == WAIT_FAILED ) ioerror ( \"WaitForSingleObject\" ) ; if ( ! CloseHandle ( thread_list [ i ] ) ) ioerror ( \"CloseHandle\" ) ; # endif } s_log ( LOG_NOTICE , \"Service<S2SV_blank>threads<S2SV_blank>terminated\" ) ; } str_free ( thread_list ) ; # endif unbind_ports ( ) ; s_poll_free ( fds ) ; fds = NULL ; # if 0 str_stats ( ) ; # endif <S2SV_StartBug> log_flush ( LOG_MODE_ERROR ) ; <S2SV_EndBug> log_close ( SINK_SYSLOG | SINK_OUTFILE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif log_flush ( LOG_MODE_BUFFER <S2SV_ModEnd> ) ; log_close\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3820\n\n```\nCWE-119 WORD32 ih264d_mark_err_slice_skip ( dec_struct_t * ps_dec , WORD32 num_mb_skip , UWORD8 u1_is_idr_slice , UWORD16 u2_frame_num , pocstruct_t * ps_cur_poc , WORD32 prev_slice_err ) { WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 ; UWORD32 u1_mb_idx = ps_dec -> u1_mb_idx ; UWORD32 i2_mb_skip_run ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD32 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end ; UWORD32 u1_tfr_n_mb ; UWORD32 u1_decode_nmb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD16 u2_total_mbs_coded ; UWORD32 u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; parse_part_params_t * ps_part_info ; WORD32 ret ; if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return 0 ; } ps_dec -> ps_dpb_cmds -> u1_long_term_reference_flag = 0 ; if ( prev_slice_err == 1 ) { ps_dec -> ps_cur_slice -> u2_frame_num = u2_frame_num ; if ( ! ps_dec -> u1_first_slice_in_stream ) { ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , ps_dec -> ps_cur_slice -> u2_frame_num ) ; ps_dec -> s_cur_pic_poc . u2_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; } { WORD32 i , j , poc = 0 ; ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = 0 ; ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; if ( ps_dec -> ps_cur_pic != NULL ) poc = ps_dec -> ps_cur_pic -> i4_poc + 2 ; j = 0 ; for ( i = 0 ; i < MAX_NUM_PIC_PARAMS ; i ++ ) if ( ps_dec -> ps_pps [ i ] . u1_is_valid == TRUE ) j = i ; { ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_cur_slice -> u1_nal_ref_idc = 1 ; ps_dec -> ps_cur_slice -> u1_nal_unit_type = 1 ; ret = ih264d_start_of_pic ( ps_dec , poc , ps_cur_poc , ps_dec -> ps_cur_slice -> u2_frame_num , & ps_dec -> ps_pps [ j ] ) ; if ( ret != OK ) { return ret ; } } ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ 0 ] -> u1_pic_buf_id = 0 ; ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } <S2SV_StartBug> } <S2SV_EndBug> else { dec_slice_struct_t * ps_parse_cur_slice ; ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; if ( ps_dec -> u1_slice_header_done && ps_parse_cur_slice == ps_dec -> ps_parse_cur_slice ) { u1_num_mbs = ps_dec -> u4_num_mbs_cur_nmb ; if ( u1_num_mbs ) { ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs - 1 ; } else { if ( ps_dec -> u1_separate_parse ) { ps_cur_mb_info = ps_dec -> ps_nmb_info - 1 ; } else { ps_cur_mb_info = ps_dec -> ps_nmb_info + ps_dec -> u4_num_mbs_prev_nmb - 1 ; } } ps_dec -> u2_mby = ps_cur_mb_info -> u2_mby ; ps_dec -> u2_mbx = ps_cur_mb_info -> u2_mbx ; ps_dec -> u1_mb_ngbr_availablity = ps_cur_mb_info -> u1_mb_ngbr_availablity ; ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_prev_mb_parse_tu_coeff_data ; ps_dec -> u2_cur_mb_addr -- ; ps_dec -> i4_submb_ofst -= SUB_BLK_SIZE ; if ( u1_num_mbs ) { if ( ps_dec -> u1_pr_sl_type == P_SLICE || ps_dec -> u1_pr_sl_type == B_SLICE ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = 1 ; u1_tfr_n_mb = 1 ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; ps_dec -> u1_mb_idx = 0 ; ps_dec -> u4_num_mbs_cur_nmb = 0 ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; return 0 ; } ps_dec -> u2_cur_slice_num ++ ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; ps_dec -> ps_parse_cur_slice ++ ; } else { ps_dec -> ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; } } { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MAX_FRAMES ; if ( ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) && ( 0 == ps_dec -> i4_display_delay ) ) { num_entries = 1 ; } num_entries = ( ( 2 * num_entries ) + 1 ) ; if ( BASE_PROFILE_IDC != ps_dec -> ps_cur_sps -> u1_profile_idc ) { num_entries *= 2 ; } size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( volatile void * * ) pu1_buf ; } ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = ps_dec -> u2_total_mbs_coded << u1_mbaff ; ps_dec -> ps_cur_slice -> i1_slice_alpha_c0_offset = 0 ; ps_dec -> ps_cur_slice -> i1_slice_beta_offset = 0 ; if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ps_dec -> u2_prv_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> u2_total_mbs_coded << u1_mbaff ; ps_dec -> ps_parse_cur_slice -> u2_log2Y_crwd = ps_dec -> ps_cur_slice -> u2_log2Y_crwd ; if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_parse_cur_slice -> slice_type = P_SLICE ; ps_dec -> pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u1_slice_header_done = 2 ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; u1_num_mbs = u1_mb_idx ; u1_slice_end = 0 ; u1_tfr_n_mb = 0 ; u1_decode_nmb = 0 ; u1_num_mbsNby2 = 0 ; i2_cur_mb_addr = ps_dec -> u2_total_mbs_coded ; i2_mb_skip_run = num_mb_skip ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) break ; ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; if ( u1_mbaff ) ih264d_get_mb_info_cavlc_mbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; else ih264d_get_mb_info_cavlc_nonmbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) { ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; } ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> u1_sub_mb_num = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_mb_mc_mode = PRED_16x16 ; ps_cur_mb_info -> u1_cbp = 0 ; ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CAVLC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; i2_mb_skip_run -- ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; u1_num_mbs ++ ; u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ! i2_mb_skip_run ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; if ( u1_tfr_n_mb ) u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice ; H264_DEC_DEBUG_PRINT ( \"Mbs<S2SV_blank>in<S2SV_blank>slice:<S2SV_blank>%d\\\\n\" , ps_dec -> ps_cur_slice -> u4_mbs_in_slice ) ; <S2SV_StartBug> ps_dec -> u2_cur_slice_num ++ ; <S2SV_EndBug> <S2SV_StartBug> if ( ps_dec -> u4_first_slice_in_pic != 0 ) <S2SV_EndBug> ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } } } ps_dec -> u4_first_slice_in_pic = 0 ; <S2SV_ModStart> u4_mbs_in_slice ) ; if ( ps_dec -> u4_first_slice_in_pic != 0 ) { ps_dec -> ps_parse_cur_slice ++ ; <S2SV_ModStart> u2_cur_slice_num ++ ; } <S2SV_ModEnd> ps_dec -> i2_prev_slice_mbx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9763\n\n```\nCWE-119 static struct grub_ext4_extent_header * grub_ext4_find_leaf ( struct grub_ext2_data * data , char * buf , struct grub_ext4_extent_header * ext_block , grub_uint32_t fileblock ) { struct grub_ext4_extent_idx * index ; while ( 1 ) { int i ; grub_disk_addr_t block ; index = ( struct grub_ext4_extent_idx * ) ( ext_block + 1 ) ; if ( grub_le_to_cpu16 ( ext_block -> magic ) != EXT4_EXT_MAGIC ) return 0 ; if ( ext_block -> depth == 0 ) return ext_block ; for ( i = 0 ; i < grub_le_to_cpu16 ( ext_block -> entries ) ; i ++ ) { if ( fileblock < grub_le_to_cpu32 ( index [ i ] . block ) ) break ; } if ( -- i < 0 ) return 0 ; block = grub_le_to_cpu16 ( index [ i ] . leaf_hi ) ; block = ( block << 32 ) + grub_le_to_cpu32 ( index [ i ] . leaf ) ; if ( grub_disk_read ( data -> disk , block << LOG2_EXT2_BLOCK_SIZE ( data ) , 0 , EXT2_BLOCK_SIZE ( data ) , buf ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> ext_block = ( struct grub_ext4_extent_header * ) buf ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buf ) ) { return 0 ; } <S2SV_ModEnd> ext_block = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8852\n\n```\nCWE-000 static uint16_t http_splitline ( struct worker * w , int fd , struct http * hp , const struct http_conn * htc , int h1 , int h2 , int h3 ) { char * p , * q ; CHECK_OBJ_NOTNULL ( htc , HTTP_CONN_MAGIC ) ; CHECK_OBJ_NOTNULL ( hp , HTTP_MAGIC ) ; Tcheck ( htc -> rxbuf ) ; for ( p = htc -> rxbuf . b ; vct_islws ( * p ) ; p ++ ) continue ; q = p ; for ( ; ! vct_issp ( * p ) ; p ++ ) { if ( vct_isctl ( * p ) ) return ( 400 ) ; } hp -> hd [ h1 ] . b = q ; hp -> hd [ h1 ] . e = p ; for ( ; vct_issp ( * p ) ; p ++ ) { if ( vct_isctl ( * p ) ) return ( 400 ) ; } q = p ; for ( ; ! vct_islws ( * p ) ; p ++ ) { if ( vct_isctl ( * p ) ) return ( 400 ) ; } hp -> hd [ h2 ] . b = q ; hp -> hd [ h2 ] . e = p ; if ( ! Tlen ( hp -> hd [ h2 ] ) ) return ( 400 ) ; for ( ; vct_issp ( * p ) ; p ++ ) { if ( vct_isctl ( * p ) ) return ( 400 ) ; } q = p ; <S2SV_StartBug> if ( ! vct_iscrlf ( * p ) ) { <S2SV_EndBug> <S2SV_StartBug> for ( ; ! vct_iscrlf ( * p ) ; p ++ ) <S2SV_EndBug> if ( ! vct_issep ( * p ) && vct_isctl ( * p ) ) return ( 400 ) ; } hp -> hd [ h3 ] . b = q ; hp -> hd [ h3 ] . e = p ; p += vct_skipcrlf ( p ) ; * hp -> hd [ h1 ] . e = '\\\\0' ; WSLH ( w , fd , hp , h1 ) ; * hp -> hd [ h2 ] . e = '\\\\0' ; WSLH ( w , fd , hp , h2 ) ; if ( hp -> hd [ h3 ] . e != NULL ) { * hp -> hd [ h3 ] . e = '\\\\0' ; WSLH ( w , fd , hp , h3 ) ; } return ( http_dissect_hdrs ( w , hp , fd , p , htc ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! vct_iscrlf ( <S2SV_ModEnd> p ) ) <S2SV_ModStart> ! vct_iscrlf ( <S2SV_ModEnd> p ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-252(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16643\n\n```\nCWE-252 static Image * ReadCALSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char filename [ MagickPathExtent ] , header [ MagickPathExtent ] , message [ MagickPathExtent ] ; FILE * file ; Image * image ; ImageInfo * read_info ; int c , unique_file ; MagickBooleanType status ; register ssize_t i ; unsigned long density , direction , height , orientation , pel_path , type , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( header , 0 , sizeof ( header ) ) ; density = 0 ; direction = 0 ; orientation = 1 ; pel_path = 0 ; type = 1 ; width = 0 ; height = 0 ; for ( i = 0 ; i < 16 ; i ++ ) { if ( ReadBlob ( image , 128 , ( unsigned char * ) header ) != 128 ) break ; switch ( * header ) { case 'R' : case 'r' : { if ( LocaleNCompare ( header , \"rdensty:\" , 8 ) == 0 ) { ( void ) sscanf ( header + 8 , \"%lu\" , & density ) ; break ; } if ( LocaleNCompare ( header , \"rpelcnt:\" , 8 ) == 0 ) { ( void ) sscanf ( header + 8 , \"%lu,%lu\" , & width , & height ) ; break ; } if ( LocaleNCompare ( header , \"rorient:\" , 8 ) == 0 ) { ( void ) sscanf ( header + 8 , \"%lu,%lu\" , & pel_path , & direction ) ; if ( pel_path == 90 ) orientation = 5 ; else if ( pel_path == 180 ) orientation = 3 ; else if ( pel_path == 270 ) orientation = 7 ; if ( direction == 90 ) orientation ++ ; break ; } if ( LocaleNCompare ( header , \"rtype:\" , 6 ) == 0 ) { ( void ) sscanf ( header + 6 , \"%lu\" , & type ) ; break ; } break ; } } } file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( ( unique_file == - 1 ) || ( file == ( FILE * ) NULL ) ) ThrowImageException ( FileOpenError , \"UnableToCreateTemporaryFile\" ) ; while ( ( c = ReadBlobByte ( image ) ) != EOF ) <S2SV_StartBug> ( void ) fputc ( c , file ) ; <S2SV_EndBug> ( void ) fclose ( file ) ; ( void ) CloseBlob ( image ) ; image = DestroyImage ( image ) ; read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"group4:%s\" , filename ) ; ( void ) FormatLocaleString ( message , MagickPathExtent , \"%lux%lu\" , width , height ) ; ( void ) CloneString ( & read_info -> size , message ) ; ( void ) FormatLocaleString ( message , MagickPathExtent , \"%lu\" , density ) ; ( void ) CloneString ( & read_info -> density , message ) ; read_info -> orientation = ( OrientationType ) orientation ; image = ReadImage ( read_info , exception ) ; if ( image != ( Image * ) NULL ) { ( void ) CopyMagickString ( image -> filename , image_info -> filename , MagickPathExtent ) ; ( void ) CopyMagickString ( image -> magick_filename , image_info -> filename , MagickPathExtent ) ; ( void ) CopyMagickString ( image -> magick , \"CALS\" , MagickPathExtent ) ; } read_info = DestroyImageInfo ( read_info ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != EOF ) if ( <S2SV_ModEnd> fputc ( c <S2SV_ModStart> , file ) != c ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9420\n\n```\nCWE-399 static int rock_continue ( struct rock_state * rs ) { int ret = 1 ; int blocksize = 1 << rs -> inode -> i_blkbits ; const int min_de_size = offsetof ( struct rock_ridge , u ) ; kfree ( rs -> buffer ) ; rs -> buffer = NULL ; if ( ( unsigned ) rs -> cont_offset > blocksize - min_de_size || ( unsigned ) rs -> cont_size > blocksize || ( unsigned ) ( rs -> cont_offset + rs -> cont_size ) > blocksize ) { printk ( KERN_NOTICE \"rock:<S2SV_blank>corrupted<S2SV_blank>directory<S2SV_blank>entry.<S2SV_blank>\" \"extent=%d,<S2SV_blank>offset=%d,<S2SV_blank>size=%d\\\\n\" , rs -> cont_extent , rs -> cont_offset , rs -> cont_size ) ; ret = - EIO ; goto out ; } if ( rs -> cont_extent ) { struct buffer_head * bh ; rs -> buffer = kmalloc ( rs -> cont_size , GFP_KERNEL ) ; if ( ! rs -> buffer ) { ret = - ENOMEM ; goto out ; } ret = - EIO ; <S2SV_StartBug> bh = sb_bread ( rs -> inode -> i_sb , rs -> cont_extent ) ; <S2SV_EndBug> if ( bh ) { memcpy ( rs -> buffer , bh -> b_data + rs -> cont_offset , rs -> cont_size ) ; put_bh ( bh ) ; rs -> chr = rs -> buffer ; rs -> len = rs -> cont_size ; rs -> cont_extent = 0 ; rs -> cont_size = 0 ; rs -> cont_offset = 0 ; return 0 ; } printk ( \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>rock-ridge<S2SV_blank>attributes\\\\n\" ) ; } out : kfree ( rs -> buffer ) ; rs -> buffer = NULL ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EIO ; if ( ++ rs -> cont_loops >= RR_MAX_CE_ENTRIES ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-787 void mp_decode_to_lua_array ( lua_State * L , mp_cur * c , size_t len ) { assert ( len <= UINT_MAX ) ; int index = 1 ; <S2SV_StartBug> lua_newtable ( L ) ; <S2SV_EndBug> while ( len -- ) { lua_pushnumber ( L , index ++ ) ; mp_decode_to_lua_type ( L , c ) ; if ( c -> err ) return ; lua_settable ( L , - 3 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lua_newtable ( L ) ; luaL_checkstack ( L , 1 , \"in<S2SV_blank>function<S2SV_blank>mp_decode_to_lua_array\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14039\n\n```\nCWE-787 static OPJ_BOOL opj_t2_encode_packet ( OPJ_UINT32 tileno , opj_tcd_tile_t * tile , opj_tcp_t * tcp , opj_pi_iterator_t * pi , OPJ_BYTE * dest , OPJ_UINT32 * p_data_written , OPJ_UINT32 length , opj_codestream_info_t * cstr_info , J2K_T2_MODE p_t2_mode , opj_event_mgr_t * p_manager ) { OPJ_UINT32 bandno , cblkno ; OPJ_BYTE * c = dest ; OPJ_UINT32 l_nb_bytes ; OPJ_UINT32 compno = pi -> compno ; OPJ_UINT32 resno = pi -> resno ; OPJ_UINT32 precno = pi -> precno ; OPJ_UINT32 layno = pi -> layno ; OPJ_UINT32 l_nb_blocks ; opj_tcd_band_t * band = 00 ; opj_tcd_cblk_enc_t * cblk = 00 ; opj_tcd_pass_t * pass = 00 ; opj_tcd_tilecomp_t * tilec = & tile -> comps [ compno ] ; opj_tcd_resolution_t * res = & tilec -> resolutions [ resno ] ; opj_bio_t * bio = 00 ; OPJ_BOOL packet_empty = OPJ_TRUE ; <S2SV_StartBug> if ( tcp -> csty & J2K_CP_CSTY_SOP ) { <S2SV_EndBug> c [ 0 ] = 255 ; c [ 1 ] = 145 ; c [ 2 ] = 0 ; c [ 3 ] = 4 ; # if 0 c [ 4 ] = ( tile -> packno % 65536 ) / 256 ; c [ 5 ] = ( tile -> packno % 65536 ) % 256 ; # else c [ 4 ] = ( tile -> packno >> 8 ) & 0xff ; c [ 5 ] = tile -> packno & 0xff ; # endif c += 6 ; length -= 6 ; } if ( ! layno ) { band = res -> bands ; for ( bandno = 0 ; bandno < res -> numbands ; ++ bandno , ++ band ) { opj_tcd_precinct_t * prc ; if ( opj_tcd_is_band_empty ( band ) ) { continue ; } prc = & band -> precincts [ precno ] ; opj_tgt_reset ( prc -> incltree ) ; opj_tgt_reset ( prc -> imsbtree ) ; l_nb_blocks = prc -> cw * prc -> ch ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; ++ cblkno ) { cblk = & prc -> cblks . enc [ cblkno ] ; cblk -> numpasses = 0 ; opj_tgt_setvalue ( prc -> imsbtree , cblkno , band -> numbps - ( OPJ_INT32 ) cblk -> numbps ) ; } } } bio = opj_bio_create ( ) ; if ( ! bio ) { return OPJ_FALSE ; } opj_bio_init_enc ( bio , c , length ) ; band = res -> bands ; for ( bandno = 0 ; bandno < res -> numbands ; ++ bandno , ++ band ) { opj_tcd_precinct_t * prc ; if ( opj_tcd_is_band_empty ( band ) ) { continue ; } prc = & band -> precincts [ precno ] ; l_nb_blocks = prc -> cw * prc -> ch ; cblk = prc -> cblks . enc ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; cblkno ++ , ++ cblk ) { opj_tcd_layer_t * layer = & cblk -> layers [ layno ] ; if ( ! layer -> numpasses ) { continue ; } packet_empty = OPJ_FALSE ; break ; } if ( ! packet_empty ) { break ; } } opj_bio_write ( bio , packet_empty ? 0 : 1 , 1 ) ; band = res -> bands ; for ( bandno = 0 ; ! packet_empty && bandno < res -> numbands ; ++ bandno , ++ band ) { opj_tcd_precinct_t * prc ; if ( opj_tcd_is_band_empty ( band ) ) { continue ; } prc = & band -> precincts [ precno ] ; l_nb_blocks = prc -> cw * prc -> ch ; cblk = prc -> cblks . enc ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; ++ cblkno ) { opj_tcd_layer_t * layer = & cblk -> layers [ layno ] ; if ( ! cblk -> numpasses && layer -> numpasses ) { opj_tgt_setvalue ( prc -> incltree , cblkno , ( OPJ_INT32 ) layno ) ; } ++ cblk ; } cblk = prc -> cblks . enc ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; cblkno ++ ) { opj_tcd_layer_t * layer = & cblk -> layers [ layno ] ; OPJ_UINT32 increment = 0 ; OPJ_UINT32 nump = 0 ; OPJ_UINT32 len = 0 , passno ; OPJ_UINT32 l_nb_passes ; if ( ! cblk -> numpasses ) { opj_tgt_encode ( bio , prc -> incltree , cblkno , ( OPJ_INT32 ) ( layno + 1 ) ) ; } else { opj_bio_write ( bio , layer -> numpasses != 0 , 1 ) ; } if ( ! layer -> numpasses ) { ++ cblk ; continue ; } if ( ! cblk -> numpasses ) { cblk -> numlenbits = 3 ; opj_tgt_encode ( bio , prc -> imsbtree , cblkno , 999 ) ; } opj_t2_putnumpasses ( bio , layer -> numpasses ) ; l_nb_passes = cblk -> numpasses + layer -> numpasses ; pass = cblk -> passes + cblk -> numpasses ; for ( passno = cblk -> numpasses ; passno < l_nb_passes ; ++ passno ) { ++ nump ; len += pass -> len ; if ( pass -> term || passno == ( cblk -> numpasses + layer -> numpasses ) - 1 ) { increment = ( OPJ_UINT32 ) opj_int_max ( ( OPJ_INT32 ) increment , opj_int_floorlog2 ( ( OPJ_INT32 ) len ) + 1 - ( ( OPJ_INT32 ) cblk -> numlenbits + opj_int_floorlog2 ( ( OPJ_INT32 ) nump ) ) ) ; len = 0 ; nump = 0 ; } ++ pass ; } opj_t2_putcommacode ( bio , ( OPJ_INT32 ) increment ) ; cblk -> numlenbits += increment ; pass = cblk -> passes + cblk -> numpasses ; for ( passno = cblk -> numpasses ; passno < l_nb_passes ; ++ passno ) { nump ++ ; len += pass -> len ; if ( pass -> term || passno == ( cblk -> numpasses + layer -> numpasses ) - 1 ) { opj_bio_write ( bio , ( OPJ_UINT32 ) len , cblk -> numlenbits + ( OPJ_UINT32 ) opj_int_floorlog2 ( ( OPJ_INT32 ) nump ) ) ; len = 0 ; nump = 0 ; } ++ pass ; } ++ cblk ; } } if ( ! opj_bio_flush ( bio ) ) { opj_bio_destroy ( bio ) ; return OPJ_FALSE ; } l_nb_bytes = ( OPJ_UINT32 ) opj_bio_numbytes ( bio ) ; c += l_nb_bytes ; length -= l_nb_bytes ; opj_bio_destroy ( bio ) ; <S2SV_StartBug> if ( tcp -> csty & J2K_CP_CSTY_EPH ) { <S2SV_EndBug> c [ 0 ] = 255 ; c [ 1 ] = 146 ; c += 2 ; length -= 2 ; } if ( cstr_info && cstr_info -> index_write ) { opj_packet_info_t * info_PK = & cstr_info -> tile [ tileno ] . packet [ cstr_info -> packno ] ; info_PK -> end_ph_pos = ( OPJ_INT32 ) ( c - dest ) ; } band = res -> bands ; for ( bandno = 0 ; ! packet_empty && bandno < res -> numbands ; bandno ++ , ++ band ) { opj_tcd_precinct_t * prc ; if ( opj_tcd_is_band_empty ( band ) ) { continue ; } prc = & band -> precincts [ precno ] ; l_nb_blocks = prc -> cw * prc -> ch ; cblk = prc -> cblks . enc ; for ( cblkno = 0 ; cblkno < l_nb_blocks ; ++ cblkno ) { opj_tcd_layer_t * layer = & cblk -> layers [ layno ] ; if ( ! layer -> numpasses ) { ++ cblk ; continue ; } if ( layer -> len > length ) { if ( p_t2_mode == FINAL_PASS ) { opj_event_msg ( p_manager , EVT_ERROR , \"opj_t2_encode_packet():<S2SV_blank>only<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>in<S2SV_blank>\" \"output<S2SV_blank>buffer.<S2SV_blank>%u<S2SV_blank>needed.\\\\n\" , length , layer -> len ) ; } return OPJ_FALSE ; } memcpy ( c , layer -> data , layer -> len ) ; cblk -> numpasses += layer -> numpasses ; c += layer -> len ; length -= layer -> len ; if ( cstr_info && cstr_info -> index_write ) { opj_packet_info_t * info_PK = & cstr_info -> tile [ tileno ] . packet [ cstr_info -> packno ] ; info_PK -> disto += layer -> disto ; if ( cstr_info -> D_max < info_PK -> disto ) { cstr_info -> D_max = info_PK -> disto ; } } ++ cblk ; } } assert ( c >= dest ) ; * p_data_written += ( OPJ_UINT32 ) ( c - dest ) ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> J2K_CP_CSTY_SOP ) { if ( length < 6 ) { if ( p_t2_mode == FINAL_PASS ) { opj_event_msg ( p_manager , EVT_ERROR , \"opj_t2_encode_packet():<S2SV_blank>only<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>in<S2SV_blank>\" \"output<S2SV_blank>buffer.<S2SV_blank>%u<S2SV_blank>needed.\\\\n\" , length , 6 ) ; } return OPJ_FALSE ; } <S2SV_ModStart> J2K_CP_CSTY_EPH ) { if ( length < 2 ) { if ( p_t2_mode == FINAL_PASS ) { opj_event_msg ( p_manager , EVT_ERROR , \"opj_t2_encode_packet():<S2SV_blank>only<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>in<S2SV_blank>\" \"output<S2SV_blank>buffer.<S2SV_blank>%u<S2SV_blank>needed.\\\\n\" , length , 2 ) ; } return OPJ_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t vp8_init ( vpx_codec_ctx_t * ctx , vpx_codec_priv_enc_mr_cfg_t * data ) { vpx_codec_err_t res = VPX_CODEC_OK ; <S2SV_StartBug> ( void ) data ; <S2SV_EndBug> vp8_rtcd ( ) ; <S2SV_StartBug> if ( ! ctx -> priv ) <S2SV_EndBug> { <S2SV_StartBug> vpx_codec_mmap_t mmap ; <S2SV_EndBug> mmap . id = vp8_mem_req_segs [ 0 ] . id ; mmap . sz = sizeof ( vpx_codec_alg_priv_t ) ; mmap . align = vp8_mem_req_segs [ 0 ] . align ; mmap . flags = vp8_mem_req_segs [ 0 ] . flags ; res = vpx_mmap_alloc ( & mmap ) ; if ( res != VPX_CODEC_OK ) return res ; <S2SV_StartBug> vp8_init_ctx ( ctx , & mmap ) ; <S2SV_EndBug> <S2SV_StartBug> ctx -> priv -> alg_priv -> fragments . count = 0 ; <S2SV_EndBug> <S2SV_StartBug> ctx -> priv -> alg_priv -> fragments . enabled = <S2SV_EndBug> <S2SV_StartBug> ( ctx -> priv -> alg_priv -> base . init_flags & <S2SV_EndBug> VPX_CODEC_USE_INPUT_FRAGMENTS ) ; <S2SV_StartBug> ctx -> priv -> alg_priv -> defer_alloc = 1 ; <S2SV_EndBug> } ctx -> priv -> alg_priv -> yv12_frame_buffers . use_frame_threads = <S2SV_StartBug> ( ctx -> priv -> alg_priv -> base . init_flags & <S2SV_EndBug> VPX_CODEC_USE_FRAME_THREADING ) ; <S2SV_StartBug> ctx -> priv -> alg_priv -> yv12_frame_buffers . use_frame_threads = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( ctx -> priv -> alg_priv -> yv12_frame_buffers . use_frame_threads && <S2SV_EndBug> <S2SV_StartBug> ( ( ctx -> priv -> alg_priv -> base . init_flags & <S2SV_EndBug> <S2SV_StartBug> VPX_CODEC_USE_ERROR_CONCEALMENT ) <S2SV_EndBug> <S2SV_StartBug> || ( ctx -> priv -> alg_priv -> base . init_flags & <S2SV_EndBug> VPX_CODEC_USE_INPUT_FRAGMENTS ) ) ) { res = VPX_CODEC_INVALID_PARAM ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = VPX_CODEC_OK ; vpx_codec_alg_priv_t * priv = NULL ; <S2SV_ModStart> ( ) ; vpx_dsp_rtcd ( ) ; vpx_scale_rtcd ( ) ; <S2SV_ModStart> priv ) { <S2SV_ModEnd> vp8_init_ctx ( ctx <S2SV_ModStart> vp8_init_ctx ( ctx ) ; priv = ( vpx_codec_alg_priv_t * ) <S2SV_ModEnd> ctx -> priv <S2SV_ModStart> ctx -> priv ; priv <S2SV_ModEnd> -> fragments . <S2SV_ModStart> = 0 ; priv <S2SV_ModEnd> -> fragments . <S2SV_ModStart> enabled = ( priv <S2SV_ModEnd> -> base . <S2SV_ModStart> VPX_CODEC_USE_INPUT_FRAGMENTS ) ; } else { priv = ( vpx_codec_alg_priv_t * ) <S2SV_ModStart> ctx -> priv ; } priv <S2SV_ModEnd> -> yv12_frame_buffers . <S2SV_ModStart> -> priv -> <S2SV_ModEnd> init_flags & VPX_CODEC_USE_FRAME_THREADING <S2SV_ModStart> VPX_CODEC_USE_FRAME_THREADING ) ; priv <S2SV_ModEnd> -> yv12_frame_buffers . <S2SV_ModStart> ; if ( priv <S2SV_ModEnd> -> yv12_frame_buffers . <S2SV_ModStart> -> priv -> <S2SV_ModEnd> init_flags & VPX_CODEC_USE_ERROR_CONCEALMENT <S2SV_ModStart> & VPX_CODEC_USE_ERROR_CONCEALMENT ) || <S2SV_ModEnd> ( ctx -> <S2SV_ModStart> -> priv -> <S2SV_ModEnd> init_flags & VPX_CODEC_USE_INPUT_FRAGMENTS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3339\n\n```\nCWE-362 int prepare_binprm ( struct linux_binprm * bprm ) { <S2SV_StartBug> struct inode * inode = file_inode ( bprm -> file ) ; <S2SV_EndBug> umode_t mode = inode -> i_mode ; int retval ; <S2SV_StartBug> bprm -> cred -> euid = current_euid ( ) ; <S2SV_EndBug> bprm -> cred -> egid = current_egid ( ) ; if ( ! ( bprm -> file -> f_path . mnt -> mnt_flags & MNT_NOSUID ) && ! task_no_new_privs ( current ) && kuid_has_mapping ( bprm -> cred -> user_ns , inode -> i_uid ) && kgid_has_mapping ( bprm -> cred -> user_ns , inode -> i_gid ) ) { if ( mode & S_ISUID ) { bprm -> per_clear |= PER_CLEAR_ON_SETID ; bprm -> cred -> euid = inode -> i_uid ; } if ( ( mode & ( S_ISGID | S_IXGRP ) ) == ( S_ISGID | S_IXGRP ) ) { bprm -> per_clear |= PER_CLEAR_ON_SETID ; bprm -> cred -> egid = inode -> i_gid ; } } retval = security_bprm_set_creds ( bprm ) ; if ( retval ) return retval ; bprm -> cred_prepared = 1 ; memset ( bprm -> buf , 0 , BINPRM_BUF_SIZE ) ; return kernel_read ( bprm -> file , 0 , bprm -> buf , BINPRM_BUF_SIZE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bprm ) { <S2SV_ModEnd> int retval ; <S2SV_ModStart> int retval ; bprm_fill_uid ( bprm ) ; <S2SV_ModEnd> retval = security_bprm_set_creds\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0205\n\n```\nCWE-310 int ssl3_get_cert_verify ( SSL * s ) { EVP_PKEY * pkey = NULL ; unsigned char * p ; int al , ok , ret = 0 ; long n ; int type = 0 , i , j ; X509 * peer ; const EVP_MD * md = NULL ; EVP_MD_CTX mctx ; EVP_MD_CTX_init ( & mctx ) ; n = s -> method -> ssl_get_message ( s , SSL3_ST_SR_CERT_VRFY_A , SSL3_ST_SR_CERT_VRFY_B , - 1 , SSL3_RT_MAX_PLAIN_LENGTH , & ok ) ; if ( ! ok ) return ( ( int ) n ) ; if ( s -> session -> peer != NULL ) { peer = s -> session -> peer ; pkey = X509_get_pubkey ( peer ) ; type = X509_certificate_type ( peer , pkey ) ; } else { peer = NULL ; pkey = NULL ; } if ( s -> s3 -> tmp . message_type != SSL3_MT_CERTIFICATE_VERIFY ) { s -> s3 -> tmp . reuse_message = 1 ; <S2SV_StartBug> if ( ( peer != NULL ) && ( type & EVP_PKT_SIGN ) ) <S2SV_EndBug> { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_MISSING_VERIFY_MESSAGE ) ; goto f_err ; } ret = 1 ; goto end ; } if ( peer == NULL ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_NO_CLIENT_CERT_RECEIVED ) ; al = SSL_AD_UNEXPECTED_MESSAGE ; goto f_err ; } if ( ! ( type & EVP_PKT_SIGN ) ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE ) ; al = SSL_AD_ILLEGAL_PARAMETER ; goto f_err ; } if ( s -> s3 -> change_cipher_spec ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_CCS_RECEIVED_EARLY ) ; al = SSL_AD_UNEXPECTED_MESSAGE ; goto f_err ; } p = ( unsigned char * ) s -> init_msg ; if ( n == 64 && ( pkey -> type == NID_id_GostR3410_94 || pkey -> type == NID_id_GostR3410_2001 ) ) { i = 64 ; } else { if ( SSL_USE_SIGALGS ( s ) ) { int rv = tls12_check_peer_sigalg ( & md , s , p , pkey ) ; if ( rv == - 1 ) { al = SSL_AD_INTERNAL_ERROR ; goto f_err ; } else if ( rv == 0 ) { al = SSL_AD_DECODE_ERROR ; goto f_err ; } # ifdef SSL_DEBUG fprintf ( stderr , \"USING<S2SV_blank>TLSv1.2<S2SV_blank>HASH<S2SV_blank>%s\\\\n\" , EVP_MD_name ( md ) ) ; # endif p += 2 ; n -= 2 ; } n2s ( p , i ) ; n -= 2 ; if ( i > n ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_LENGTH_MISMATCH ) ; al = SSL_AD_DECODE_ERROR ; goto f_err ; } } j = EVP_PKEY_size ( pkey ) ; if ( ( i > j ) || ( n > j ) || ( n <= 0 ) ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_WRONG_SIGNATURE_SIZE ) ; al = SSL_AD_DECODE_ERROR ; goto f_err ; } if ( SSL_USE_SIGALGS ( s ) ) { long hdatalen = 0 ; void * hdata ; hdatalen = BIO_get_mem_data ( s -> s3 -> handshake_buffer , & hdata ) ; if ( hdatalen <= 0 ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , ERR_R_INTERNAL_ERROR ) ; al = SSL_AD_INTERNAL_ERROR ; goto f_err ; } # ifdef SSL_DEBUG fprintf ( stderr , \"Using<S2SV_blank>TLS<S2SV_blank>1.2<S2SV_blank>with<S2SV_blank>client<S2SV_blank>verify<S2SV_blank>alg<S2SV_blank>%s\\\\n\" , EVP_MD_name ( md ) ) ; # endif if ( ! EVP_VerifyInit_ex ( & mctx , md , NULL ) || ! EVP_VerifyUpdate ( & mctx , hdata , hdatalen ) ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , ERR_R_EVP_LIB ) ; al = SSL_AD_INTERNAL_ERROR ; goto f_err ; } if ( EVP_VerifyFinal ( & mctx , p , i , pkey ) <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_SIGNATURE ) ; goto f_err ; } } else # ifndef OPENSSL_NO_RSA if ( pkey -> type == EVP_PKEY_RSA ) { i = RSA_verify ( NID_md5_sha1 , s -> s3 -> tmp . cert_verify_md , MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH , p , i , pkey -> pkey . rsa ) ; if ( i < 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_RSA_DECRYPT ) ; goto f_err ; } if ( i == 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_RSA_SIGNATURE ) ; goto f_err ; } } else # endif # ifndef OPENSSL_NO_DSA if ( pkey -> type == EVP_PKEY_DSA ) { j = DSA_verify ( pkey -> save_type , & ( s -> s3 -> tmp . cert_verify_md [ MD5_DIGEST_LENGTH ] ) , SHA_DIGEST_LENGTH , p , i , pkey -> pkey . dsa ) ; if ( j <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_DSA_SIGNATURE ) ; goto f_err ; } } else # endif # ifndef OPENSSL_NO_ECDSA if ( pkey -> type == EVP_PKEY_EC ) { j = ECDSA_verify ( pkey -> save_type , & ( s -> s3 -> tmp . cert_verify_md [ MD5_DIGEST_LENGTH ] ) , SHA_DIGEST_LENGTH , p , i , pkey -> pkey . ec ) ; if ( j <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_ECDSA_SIGNATURE ) ; goto f_err ; } } else # endif if ( pkey -> type == NID_id_GostR3410_94 || pkey -> type == NID_id_GostR3410_2001 ) { unsigned char signature [ 64 ] ; int idx ; EVP_PKEY_CTX * pctx = EVP_PKEY_CTX_new ( pkey , NULL ) ; EVP_PKEY_verify_init ( pctx ) ; if ( i != 64 ) { fprintf ( stderr , \"GOST<S2SV_blank>signature<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d\" , i ) ; } for ( idx = 0 ; idx < 64 ; idx ++ ) { signature [ 63 - idx ] = p [ idx ] ; } j = EVP_PKEY_verify ( pctx , signature , 64 , s -> s3 -> tmp . cert_verify_md , 32 ) ; EVP_PKEY_CTX_free ( pctx ) ; if ( j <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_ECDSA_SIGNATURE ) ; goto f_err ; } } else { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , ERR_R_INTERNAL_ERROR ) ; al = SSL_AD_UNSUPPORTED_CERTIFICATE ; goto f_err ; } ret = 1 ; if ( 0 ) { f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; } end : if ( s -> s3 -> handshake_buffer ) { BIO_free ( s -> s3 -> handshake_buffer ) ; s -> s3 -> handshake_buffer = NULL ; s -> s3 -> flags &= ~ TLS1_FLAGS_KEEP_HANDSHAKE ; } EVP_MD_CTX_cleanup ( & mctx ) ; EVP_PKEY_free ( pkey ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> peer != NULL <S2SV_ModStart> peer != NULL <S2SV_ModEnd> ) { al\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t set_encoder_config ( <S2SV_StartBug> VP9_CONFIG * oxcf , <S2SV_EndBug> const vpx_codec_enc_cfg_t * cfg , const struct vp9_extracfg * extra_cfg ) { <S2SV_StartBug> oxcf -> profile = cfg -> g_profile ; <S2SV_EndBug> <S2SV_StartBug> oxcf -> width = cfg -> g_w ; <S2SV_EndBug> oxcf -> height = cfg -> g_h ; <S2SV_StartBug> oxcf -> bit_depth = extra_cfg -> bit_depth ; <S2SV_EndBug> oxcf -> framerate = ( double ) cfg -> g_timebase . den / cfg -> g_timebase . num ; <S2SV_StartBug> if ( oxcf -> framerate > 180 ) <S2SV_EndBug> <S2SV_StartBug> oxcf -> framerate = 30 ; <S2SV_EndBug> switch ( cfg -> g_pass ) { case VPX_RC_ONE_PASS : <S2SV_StartBug> oxcf -> mode = MODE_GOODQUALITY ; <S2SV_EndBug> break ; case VPX_RC_FIRST_PASS : <S2SV_StartBug> oxcf -> mode = MODE_FIRSTPASS ; <S2SV_EndBug> break ; case VPX_RC_LAST_PASS : <S2SV_StartBug> oxcf -> mode = MODE_SECONDPASS_BEST ; <S2SV_EndBug> break ; } oxcf -> lag_in_frames = cfg -> g_pass == VPX_RC_FIRST_PASS ? 0 : cfg -> g_lag_in_frames ; <S2SV_StartBug> oxcf -> end_usage = USAGE_LOCAL_FILE_PLAYBACK ; <S2SV_EndBug> <S2SV_StartBug> if ( cfg -> rc_end_usage == VPX_CQ ) <S2SV_EndBug> oxcf -> end_usage = USAGE_CONSTRAINED_QUALITY ; else if ( cfg -> rc_end_usage == VPX_Q ) oxcf -> end_usage = USAGE_CONSTANT_QUALITY ; else if ( cfg -> rc_end_usage == VPX_CBR ) oxcf -> end_usage = USAGE_STREAM_FROM_SERVER ; <S2SV_StartBug> oxcf -> target_bandwidth = cfg -> rc_target_bitrate ; <S2SV_EndBug> oxcf -> rc_max_intra_bitrate_pct = extra_cfg -> rc_max_intra_bitrate_pct ; <S2SV_StartBug> oxcf -> best_allowed_q = q_trans [ cfg -> rc_min_quantizer ] ; <S2SV_EndBug> <S2SV_StartBug> oxcf -> worst_allowed_q = q_trans [ cfg -> rc_max_quantizer ] ; <S2SV_EndBug> <S2SV_StartBug> oxcf -> cq_level = q_trans [ extra_cfg -> cq_level ] ; <S2SV_EndBug> oxcf -> fixed_q = - 1 ; oxcf -> under_shoot_pct = cfg -> rc_undershoot_pct ; oxcf -> over_shoot_pct = cfg -> rc_overshoot_pct ; <S2SV_StartBug> oxcf -> maximum_buffer_size = cfg -> rc_buf_sz ; <S2SV_EndBug> <S2SV_StartBug> oxcf -> starting_buffer_level = cfg -> rc_buf_initial_sz ; <S2SV_EndBug> <S2SV_StartBug> oxcf -> optimal_buffer_level = cfg -> rc_buf_optimal_sz ; <S2SV_EndBug> oxcf -> drop_frames_water_mark = cfg -> rc_dropframe_thresh ; oxcf -> two_pass_vbrbias = cfg -> rc_2pass_vbr_bias_pct ; oxcf -> two_pass_vbrmin_section = cfg -> rc_2pass_vbr_minsection_pct ; oxcf -> two_pass_vbrmax_section = cfg -> rc_2pass_vbr_maxsection_pct ; oxcf -> auto_key = cfg -> kf_mode == VPX_KF_AUTO && cfg -> kf_min_dist != cfg -> kf_max_dist ; oxcf -> key_freq = cfg -> kf_max_dist ; <S2SV_StartBug> oxcf -> cpu_used = extra_cfg -> cpu_used ; <S2SV_EndBug> oxcf -> encode_breakout = extra_cfg -> static_thresh ; <S2SV_StartBug> oxcf -> play_alternate = extra_cfg -> enable_auto_alt_ref ; <S2SV_EndBug> oxcf -> noise_sensitivity = extra_cfg -> noise_sensitivity ; oxcf -> sharpness = extra_cfg -> sharpness ; oxcf -> two_pass_stats_in = cfg -> rc_twopass_stats_in ; <S2SV_StartBug> oxcf -> output_pkt_list = extra_cfg -> pkt_list ; <S2SV_EndBug> oxcf -> arnr_max_frames = extra_cfg -> arnr_max_frames ; oxcf -> arnr_strength = extra_cfg -> arnr_strength ; <S2SV_StartBug> oxcf -> arnr_type = extra_cfg -> arnr_type ; <S2SV_EndBug> oxcf -> tuning = extra_cfg -> tuning ; <S2SV_StartBug> oxcf -> tile_columns = extra_cfg -> tile_columns ; <S2SV_EndBug> oxcf -> tile_rows = extra_cfg -> tile_rows ; <S2SV_StartBug> oxcf -> lossless = extra_cfg -> lossless ; <S2SV_EndBug> oxcf -> error_resilient_mode = cfg -> g_error_resilient ; oxcf -> frame_parallel_decoding_mode = extra_cfg -> frame_parallel_decoding_mode ; oxcf -> aq_mode = extra_cfg -> aq_mode ; oxcf -> frame_periodic_boost = extra_cfg -> frame_periodic_boost ; oxcf -> ss_number_layers = cfg -> ss_number_layers ; <S2SV_StartBug> if ( oxcf -> ss_number_layers > 1 ) { <S2SV_EndBug> <S2SV_StartBug> vp9_copy ( oxcf -> ss_target_bitrate , cfg -> ss_target_bitrate ) ; <S2SV_EndBug> <S2SV_StartBug> } else if ( oxcf -> ss_number_layers == 1 ) { <S2SV_EndBug> oxcf -> ss_target_bitrate [ 0 ] = ( int ) oxcf -> target_bandwidth ; } oxcf -> ts_number_layers = cfg -> ts_number_layers ; if ( oxcf -> ts_number_layers > 1 ) { vp9_copy ( oxcf -> ts_target_bitrate , cfg -> ts_target_bitrate ) ; vp9_copy ( oxcf -> ts_rate_decimator , cfg -> ts_rate_decimator ) ; } else if ( oxcf -> ts_number_layers == 1 ) { <S2SV_StartBug> oxcf -> ts_target_bitrate [ 0 ] = ( int ) oxcf -> target_bandwidth ; <S2SV_EndBug> oxcf -> ts_rate_decimator [ 0 ] = 1 ; } return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_err_t set_encoder_config ( VP9EncoderConfig <S2SV_ModEnd> * oxcf , <S2SV_ModStart> extra_cfg ) { const int is_vbr = cfg -> rc_end_usage == VPX_VBR ; int sl , tl ; <S2SV_ModStart> ; oxcf -> max_threads = ( int ) cfg -> g_threads ; oxcf -> <S2SV_ModStart> -> bit_depth = cfg -> g_bit_depth ; oxcf -> input_bit_depth = cfg -> g_input_bit_depth ; oxcf -> init_framerate <S2SV_ModEnd> = ( double <S2SV_ModStart> ( oxcf -> init_framerate <S2SV_ModEnd> > 180 ) <S2SV_ModStart> ) oxcf -> init_framerate = 30 ; oxcf -> mode = GOOD <S2SV_ModEnd> ; switch ( <S2SV_ModStart> : oxcf -> pass = 0 <S2SV_ModEnd> ; break ; <S2SV_ModStart> : oxcf -> pass = 1 <S2SV_ModEnd> ; break ; <S2SV_ModStart> : oxcf -> pass = 2 <S2SV_ModEnd> ; break ; <S2SV_ModStart> ; oxcf -> rc_mode = <S2SV_ModEnd> cfg -> rc_end_usage <S2SV_ModStart> cfg -> rc_end_usage <S2SV_ModEnd> ; oxcf -> <S2SV_ModStart> -> target_bandwidth = 1000 * <S2SV_ModStart> ; oxcf -> rc_max_inter_bitrate_pct = extra_cfg -> rc_max_inter_bitrate_pct ; oxcf -> gf_cbr_boost_pct = extra_cfg -> gf_cbr_boost_pct ; oxcf -> best_allowed_q = extra_cfg -> lossless ? 0 : vp9_quantizer_to_qindex ( <S2SV_ModEnd> cfg -> rc_min_quantizer <S2SV_ModStart> cfg -> rc_min_quantizer ) <S2SV_ModEnd> ; oxcf -> <S2SV_ModStart> -> worst_allowed_q = extra_cfg -> lossless ? 0 : vp9_quantizer_to_qindex ( <S2SV_ModEnd> cfg -> rc_max_quantizer <S2SV_ModStart> cfg -> rc_max_quantizer ) <S2SV_ModEnd> ; oxcf -> <S2SV_ModStart> -> cq_level = vp9_quantizer_to_qindex ( <S2SV_ModEnd> extra_cfg -> cq_level <S2SV_ModStart> extra_cfg -> cq_level ) <S2SV_ModEnd> ; oxcf -> <S2SV_ModStart> ; oxcf -> scaled_frame_width = cfg -> rc_scaled_width ; oxcf -> scaled_frame_height = cfg -> rc_scaled_height ; if ( cfg -> rc_resize_allowed == 1 ) { oxcf -> resize_mode = ( oxcf -> scaled_frame_width == 0 || oxcf -> scaled_frame_height == 0 ) ? RESIZE_DYNAMIC : RESIZE_FIXED ; } else { oxcf -> resize_mode = RESIZE_NONE ; } oxcf -> maximum_buffer_size_ms = is_vbr ? 240000 : <S2SV_ModEnd> cfg -> rc_buf_sz <S2SV_ModStart> ; oxcf -> starting_buffer_level_ms = is_vbr ? 60000 : <S2SV_ModEnd> cfg -> rc_buf_initial_sz <S2SV_ModStart> ; oxcf -> optimal_buffer_level_ms = is_vbr ? 60000 : <S2SV_ModEnd> cfg -> rc_buf_optimal_sz <S2SV_ModStart> ; oxcf -> speed = abs ( extra_cfg -> cpu_used ) <S2SV_ModEnd> ; oxcf -> <S2SV_ModStart> ; oxcf -> enable_auto_arf <S2SV_ModEnd> = extra_cfg -> <S2SV_ModStart> -> rc_twopass_stats_in ; # if CONFIG_FP_MB_STATS oxcf -> firstpass_mb_stats_in = cfg -> rc_firstpass_mb_stats_in ; # endif oxcf -> color_space = extra_cfg -> color_space <S2SV_ModEnd> ; oxcf -> <S2SV_ModStart> ; oxcf -> min_gf_interval = extra_cfg -> min_gf_interval ; oxcf -> max_gf_interval = extra_cfg -> max_gf_interval <S2SV_ModEnd> ; oxcf -> <S2SV_ModStart> ; oxcf -> content = extra_cfg -> content ; oxcf -> <S2SV_ModStart> ; oxcf -> <S2SV_ModEnd> error_resilient_mode = cfg <S2SV_ModStart> -> ss_number_layers ; oxcf -> ts_number_layers = cfg -> ts_number_layers ; oxcf -> temporal_layering_mode = ( enum vp9e_temporal_layering_mode ) cfg -> temporal_layering_mode ; for ( sl = 0 ; sl < oxcf -> ss_number_layers ; ++ sl ) { # if CONFIG_SPATIAL_SVC oxcf -> ss_enable_auto_arf [ sl ] = cfg -> ss_enable_auto_alt_ref [ sl ] ; # endif for ( tl = 0 ; tl < oxcf -> ts_number_layers ; ++ tl ) { oxcf -> layer_target_bitrate [ sl * oxcf -> ts_number_layers + tl ] = 1000 * cfg -> layer_target_bitrate [ sl * oxcf -> ts_number_layers + tl ] ; } } if <S2SV_ModEnd> ( oxcf -> <S2SV_ModStart> oxcf -> ss_number_layers == 1 && oxcf -> pass != 0 ) { oxcf -> ss_target_bitrate [ 0 ] = ( int ) oxcf -> target_bandwidth ; # if CONFIG_SPATIAL_SVC oxcf -> ss_enable_auto_arf [ 0 ] = extra_cfg -> enable_auto_alt_ref ; # endif } if ( oxcf -> ts_number_layers <S2SV_ModStart> 1 ) { for ( tl = 0 ; tl < VPX_TS_MAX_LAYERS ; ++ tl ) { oxcf -> ts_rate_decimator [ tl ] = cfg -> ts_rate_decimator [ tl ] ? cfg -> ts_rate_decimator [ tl ] : 1 ; } <S2SV_ModEnd> } else if <S2SV_ModStart> ( oxcf -> <S2SV_ModEnd> ts_number_layers == 1 <S2SV_ModStart> { oxcf -> <S2SV_ModEnd> ts_rate_decimator [ 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imageconvolution ) { zval * SIM , * hash_matrix ; zval * * var = NULL , * * var2 = NULL ; gdImagePtr im_src = NULL ; double div , offset ; int nelem , i , j , res ; float matrix [ 3 ] [ 3 ] = { { 0 , 0 , 0 } , { 0 , 0 , 0 } , { 0 , 0 , 0 } } ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"radd\" , & SIM , & hash_matrix , & div , & offset ) == FAILURE ) { RETURN_FALSE ; } ZEND_FETCH_RESOURCE ( im_src , gdImagePtr , & SIM , - 1 , \"Image\" , le_gd ) ; nelem = zend_hash_num_elements ( Z_ARRVAL_P ( hash_matrix ) ) ; if ( nelem != 3 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>3x3<S2SV_blank>array\" ) ; RETURN_FALSE ; } for ( i = 0 ; i < 3 ; i ++ ) { if ( zend_hash_index_find ( Z_ARRVAL_P ( hash_matrix ) , ( i ) , ( void * * ) & var ) == SUCCESS && Z_TYPE_PP ( var ) == IS_ARRAY ) { if ( Z_TYPE_PP ( var ) != IS_ARRAY || zend_hash_num_elements ( Z_ARRVAL_PP ( var ) ) != 3 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>3x3<S2SV_blank>array\" ) ; RETURN_FALSE ; } for ( j = 0 ; j < 3 ; j ++ ) { if ( zend_hash_index_find ( Z_ARRVAL_PP ( var ) , ( j ) , ( void * * ) & var2 ) == SUCCESS ) { <S2SV_StartBug> SEPARATE_ZVAL ( var2 ) ; <S2SV_EndBug> <S2SV_StartBug> convert_to_double ( * var2 ) ; <S2SV_EndBug> <S2SV_StartBug> matrix [ i ] [ j ] = ( float ) Z_DVAL_PP ( var2 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>a<S2SV_blank>3x3<S2SV_blank>matrix\" ) ; <S2SV_EndBug> RETURN_FALSE ; } } <S2SV_StartBug> } <S2SV_EndBug> } res = gdImageConvolution ( im_src , matrix , ( float ) div , ( float ) offset ) ; if ( res ) { RETURN_TRUE ; } else { RETURN_FALSE ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SUCCESS ) { if ( Z_TYPE_PP <S2SV_ModEnd> ( var2 ) <S2SV_ModStart> ( var2 ) != IS_DOUBLE ) { zval dval ; dval = * * var ; zval_copy_ctor ( & dval ) <S2SV_ModStart> ; convert_to_double ( & dval ) ; matrix [ i ] [ j ] = ( float ) Z_DVAL ( dval ) ; } else { matrix [ i ] [ j ] = ( float ) Z_DVAL_PP ( <S2SV_ModEnd> var2 ) ; <S2SV_ModStart> var2 ) ; } } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>a<S2SV_blank>3x3<S2SV_blank>matrix\" ) ; RETURN_FALSE ; } } } } res = gdImageConvolution ( im_src , matrix , <S2SV_ModEnd> ( float ) <S2SV_ModStart> ( float ) div , ( float ) offset ) ; if ( res ) { RETURN_TRUE <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { <S2SV_ModEnd> RETURN_FALSE ; } <S2SV_ModStart> ; } } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8068\n\n```\nCWE-119 static int get_registers ( pegasus_t * pegasus , __u16 indx , __u16 size , void * data ) { <S2SV_StartBug> int ret ; <S2SV_EndBug> ret = usb_control_msg ( pegasus -> usb , usb_rcvctrlpipe ( pegasus -> usb , 0 ) , PEGASUS_REQ_GET_REGS , PEGASUS_REQT_READ , 0 , <S2SV_StartBug> indx , data , size , 1000 ) ; <S2SV_EndBug> if ( ret < 0 ) netif_dbg ( pegasus , drv , pegasus -> net , \"%s<S2SV_blank>returned<S2SV_blank>%d\\\\n\" , __func__ , ret ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { u8 * buf ; int ret ; buf = kmalloc ( size , GFP_NOIO ) ; if ( ! buf ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> , indx , buf <S2SV_ModEnd> , size , <S2SV_ModStart> ret ) ; else if ( ret <= size ) memcpy ( data , buf , ret ) ; kfree ( buf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12989\n\n```\nCWE-835 static int resp_get_length ( netdissect_options * ndo , register const u_char * bp , int len , const u_char * * endp ) { int result ; u_char c ; int saw_digit ; int neg ; int too_large ; if ( len == 0 ) goto trunc ; ND_TCHECK ( * bp ) ; too_large = 0 ; neg = 0 ; if ( * bp == '-' ) { neg = 1 ; bp ++ ; len -- ; } result = 0 ; saw_digit = 0 ; for ( ; ; ) { if ( len == 0 ) goto trunc ; ND_TCHECK ( * bp ) ; c = * bp ; if ( ! ( c >= '0' && c <= '9' ) ) { <S2SV_StartBug> if ( ! saw_digit ) <S2SV_EndBug> <S2SV_StartBug> goto invalid ; <S2SV_EndBug> break ; } c -= '0' ; if ( result > ( INT_MAX / 10 ) ) { too_large = 1 ; } else { result *= 10 ; if ( result == INT_MAX && c > ( INT_MAX % 10 ) ) { too_large = 1 ; } else result += c ; } bp ++ ; len -- ; saw_digit = 1 ; } if ( ! saw_digit ) goto invalid ; if ( len == 0 ) goto trunc ; ND_TCHECK ( * bp ) ; <S2SV_StartBug> if ( * bp != '\\\\r' ) <S2SV_EndBug> <S2SV_StartBug> goto invalid ; <S2SV_EndBug> bp ++ ; len -- ; if ( len == 0 ) goto trunc ; ND_TCHECK ( * bp ) ; <S2SV_StartBug> if ( * bp != '\\\\n' ) <S2SV_EndBug> <S2SV_StartBug> goto invalid ; <S2SV_EndBug> bp ++ ; len -- ; * endp = bp ; if ( neg ) { if ( too_large || result != 1 ) return ( - 4 ) ; result = - 1 ; } return ( too_large ? - 3 : result ) ; trunc : <S2SV_StartBug> return ( - 2 ) ; <S2SV_EndBug> invalid : <S2SV_StartBug> return ( - 5 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! saw_digit ) { bp ++ ; <S2SV_ModStart> goto invalid ; } <S2SV_ModStart> != '\\\\r' ) { bp ++ ; <S2SV_ModStart> goto invalid ; } <S2SV_ModStart> != '\\\\n' ) { bp ++ ; <S2SV_ModStart> goto invalid ; } <S2SV_ModStart> ; trunc : * endp = bp ; <S2SV_ModStart> ; invalid : * endp = bp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13725\n\n```\nCWE-125 int rt6_print ( netdissect_options * ndo , register const u_char * bp , const u_char * bp2 _U_ ) { register const struct ip6_rthdr * dp ; register const struct ip6_rthdr0 * dp0 ; register const u_char * ep ; int i , len ; register const struct in6_addr * addr ; dp = ( const struct ip6_rthdr * ) bp ; <S2SV_StartBug> len = dp -> ip6r_len ; <S2SV_EndBug> ep = ndo -> ndo_snapend ; ND_TCHECK ( dp -> ip6r_segleft ) ; ND_PRINT ( ( ndo , \"srcrt<S2SV_blank>(len=%d\" , dp -> ip6r_len ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>type=%d\" , dp -> ip6r_type ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>segleft=%d\" , dp -> ip6r_segleft ) ) ; switch ( dp -> ip6r_type ) { case IPV6_RTHDR_TYPE_0 : case IPV6_RTHDR_TYPE_2 : dp0 = ( const struct ip6_rthdr0 * ) dp ; ND_TCHECK ( dp0 -> ip6r0_reserved ) ; if ( dp0 -> ip6r0_reserved || ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \",<S2SV_blank>rsv=0x%0x\" , EXTRACT_32BITS ( & dp0 -> ip6r0_reserved ) ) ) ; } if ( len % 2 == 1 ) goto trunc ; len >>= 1 ; addr = & dp0 -> ip6r0_addr [ 0 ] ; for ( i = 0 ; i < len ; i ++ ) { if ( ( const u_char * ) ( addr + 1 ) > ep ) goto trunc ; ND_PRINT ( ( ndo , \",<S2SV_blank>[%d]%s\" , i , ip6addr_string ( ndo , addr ) ) ) ; addr ++ ; } ND_PRINT ( ( ndo , \")<S2SV_blank>\" ) ) ; return ( ( dp0 -> ip6r0_len + 1 ) << 3 ) ; break ; default : goto trunc ; break ; } trunc : ND_PRINT ( ( ndo , \"[|srcrt]\" ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) bp ; ep = ndo -> ndo_snapend ; ND_TCHECK ( dp -> ip6r_segleft ) ; <S2SV_ModStart> dp -> ip6r_len <S2SV_ModEnd> ; ND_PRINT (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-252(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-1999-0199\n\n```\nCWE-252 size_t _dl_dst_count ( const char * name , int is_path ) { <S2SV_StartBug> size_t cnt = 0 ; <S2SV_EndBug> do { size_t len = 1 ; <S2SV_StartBug> if ( ( ( ( ! __libc_enable_secure <S2SV_EndBug> <S2SV_StartBug> && strncmp ( & name [ 1 ] , \"ORIGIN\" , 6 ) == 0 && ( len = 7 ) != 0 ) <S2SV_EndBug> || ( strncmp ( & name [ 1 ] , \"PLATFORM\" , 8 ) == 0 && ( len = 9 ) != 0 ) ) && ( name [ len ] == '\\\\0' || name [ len ] == '/' || ( is_path && name [ len ] == ':' ) ) ) || ( name [ 1 ] == '{' && ( ( ! __libc_enable_secure <S2SV_StartBug> && strncmp ( & name [ 2 ] , \"ORIGIN}\" , 7 ) == 0 && ( len = 9 ) != 0 ) <S2SV_EndBug> || ( strncmp ( & name [ 2 ] , \"PLATFORM}\" , 9 ) == 0 && ( len = 11 ) != 0 ) ) ) ) ++ cnt ; name = strchr ( name + len , '$' ) ; } while ( name != NULL ) ; return cnt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> is_path ) { const char * const start = name ; <S2SV_ModStart> ( ( ( strncmp ( & name [ 1 ] , \"ORIGIN}\" , 6 ) == 0 && ( ! __libc_enable_secure || ( ( name [ 7 ] == '\\\\0' || ( is_path && name [ 7 ] == ':' ) ) && ( name == start || ( is_path && name [ - 1 ] == ':' ) ) ) ) && ( len = 7 ) != 0 ) || ( <S2SV_ModEnd> strncmp ( & <S2SV_ModStart> 1 ] , \"PLATFORM}\" , 8 ) == 0 && ( len = 9 ) != 0 ) ) && ( name [ len ] == '\\\\0' || name [ len ] == '/' || ( is_path && name [ len ] == ':' ) ) ) || ( name [ 1 ] == '{' && ( ( strncmp ( & name [ 2 ] , \"ORIGIN}\" , 7 ) == 0 && <S2SV_ModEnd> ( ! __libc_enable_secure <S2SV_ModStart> ( ! __libc_enable_secure || ( ( name [ 9 ] == '\\\\0' || ( is_path && name [ 9 ] == ':' ) ) && ( name == start || ( is_path && name [ - 1 ] == ':' ) ) ) ) <S2SV_ModEnd> && ( len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5352\n\n```\nCWE-000 OM_uint32 gss_krb5int_export_lucid_sec_context ( OM_uint32 * minor_status , const gss_ctx_id_t context_handle , const gss_OID desired_object , gss_buffer_set_t * data_set ) { krb5_error_code kret = 0 ; OM_uint32 retval ; krb5_gss_ctx_id_t ctx = ( krb5_gss_ctx_id_t ) context_handle ; void * lctx = NULL ; int version = 0 ; gss_buffer_desc rep ; retval = GSS_S_FAILURE ; * minor_status = 0 ; * data_set = GSS_C_NO_BUFFER_SET ; <S2SV_StartBug> retval = generic_gss_oid_decompose ( minor_status , <S2SV_EndBug> GSS_KRB5_EXPORT_LUCID_SEC_CONTEXT_OID , GSS_KRB5_EXPORT_LUCID_SEC_CONTEXT_OID_LENGTH , desired_object , & version ) ; if ( GSS_ERROR ( retval ) ) return retval ; switch ( version ) { case 1 : kret = make_external_lucid_ctx_v1 ( ( krb5_pointer ) ctx , version , & lctx ) ; break ; default : kret = ( OM_uint32 ) KG_LUCID_VERSION ; break ; } if ( kret ) goto error_out ; rep . value = & lctx ; rep . length = sizeof ( lctx ) ; retval = generic_gss_add_buffer_set_member ( minor_status , & rep , data_set ) ; if ( GSS_ERROR ( retval ) ) goto error_out ; error_out : if ( * minor_status == 0 ) * minor_status = ( OM_uint32 ) kret ; return ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = GSS_C_NO_BUFFER_SET ; if ( ctx -> terminated || ! ctx -> established ) { * minor_status = KG_CTX_INCOMPLETE ; return GSS_S_NO_CONTEXT ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5307\n\n```\nCWE-399 static void update_exception_bitmap ( struct kvm_vcpu * vcpu ) { u32 eb ; eb = ( 1u << PF_VECTOR ) | ( 1u << UD_VECTOR ) | ( 1u << MC_VECTOR ) | <S2SV_StartBug> ( 1u << NM_VECTOR ) | ( 1u << DB_VECTOR ) ; <S2SV_EndBug> if ( ( vcpu -> guest_debug & ( KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP ) ) == ( KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_USE_SW_BP ) ) eb |= 1u << BP_VECTOR ; if ( to_vmx ( vcpu ) -> rmode . vm86_active ) eb = ~ 0 ; if ( enable_ept ) eb &= ~ ( 1u << PF_VECTOR ) ; if ( vcpu -> fpu_active ) eb &= ~ ( 1u << NM_VECTOR ) ; if ( is_guest_mode ( vcpu ) ) eb |= get_vmcs12 ( vcpu ) -> exception_bitmap ; vmcs_write32 ( EXCEPTION_BITMAP , eb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1u << DB_VECTOR ) | ( 1u << AC_VECTOR\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5697\n\n```\nCWE-200 static int get_bitmap_file ( struct mddev * mddev , void __user * arg ) { mdu_bitmap_file_t * file = NULL ; char * ptr ; int err ; <S2SV_StartBug> file = kmalloc ( sizeof ( * file ) , GFP_NOIO ) ; <S2SV_EndBug> if ( ! file ) return - ENOMEM ; err = 0 ; spin_lock ( & mddev -> lock ) ; if ( ! mddev -> bitmap_info . file ) file -> pathname [ 0 ] = '\\\\0' ; else if ( ( ptr = file_path ( mddev -> bitmap_info . file , file -> pathname , sizeof ( file -> pathname ) ) ) , IS_ERR ( ptr ) ) err = PTR_ERR ( ptr ) ; else memmove ( file -> pathname , ptr , sizeof ( file -> pathname ) - ( ptr - file -> pathname ) ) ; spin_unlock ( & mddev -> lock ) ; if ( err == 0 && copy_to_user ( arg , file , sizeof ( * file ) ) ) err = - EFAULT ; kfree ( file ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; file = kzalloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9708\n\n```\nCWE-000 PUBLIC void mprDefaultLogHandler ( cchar * tags , int level , cchar * msg ) { MprFile * file ; char tbuf [ 128 ] ; static int check = 0 ; if ( ( file = MPR -> logFile ) == 0 ) { return ; } if ( MPR -> logBackup && MPR -> logSize && ( check ++ % 1000 ) == 0 ) { backupLog ( ) ; } if ( tags && * tags ) { if ( MPR -> flags & MPR_LOG_DETAILED ) { fmt ( tbuf , sizeof ( tbuf ) , \"%s<S2SV_blank>%d<S2SV_blank>%s,<S2SV_blank>\" , mprGetDate ( MPR_LOG_DATE ) , level , tags ) ; mprWriteFileString ( file , tbuf ) ; } else if ( MPR -> flags & MPR_LOG_TAGGED ) { if ( schr ( tags , '<S2SV_blank>' ) ) { <S2SV_StartBug> tags = stok ( sclone ( tags ) , \"<S2SV_blank>\" , NULL ) ; <S2SV_EndBug> } if ( ! isupper ( ( uchar ) * tags ) ) { tags = stitle ( tags ) ; } mprWriteFileFmt ( file , \"%12s<S2SV_blank>\" , sfmt ( \"[%s]\" , tags ) ) ; } } mprWriteFileString ( file , msg ) ; mprWriteFileString ( file , \"\\\\n\" ) ; # if ME_MPR_OSLOG if ( level == 0 ) { mprWriteToOsLog ( sfmt ( \"%s:<S2SV_blank>%d<S2SV_blank>%s:<S2SV_blank>%s\" , MPR -> name , level , tags , msg ) , level ) ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { tags = ssplit <S2SV_ModEnd> ( sclone (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12684\n\n```\nCWE-200 static void send_ssi_file ( struct mg_connection * conn , const char * path , struct mg_file * filep , int include_level ) { char buf [ MG_BUF_LEN ] ; int ch , offset , len , in_tag , in_ssi_tag ; if ( include_level > 10 ) { mg_cry_internal ( conn , \"SSI<S2SV_blank>#include<S2SV_blank>level<S2SV_blank>is<S2SV_blank>too<S2SV_blank>deep<S2SV_blank>(%s)\" , path ) ; return ; } in_tag = in_ssi_tag = len = offset = 0 ; while ( ( ch = mg_fgetc ( filep , offset ++ ) ) != EOF ) { if ( in_tag ) { if ( ch == '>' ) { buf [ len ++ ] = '>' ; if ( in_ssi_tag ) { buf [ len ] = 0 ; <S2SV_StartBug> if ( ! memcmp ( buf + 5 , \"include\" , 7 ) ) { <S2SV_EndBug> do_ssi_include ( conn , path , buf + 12 , include_level + 1 ) ; # if ! defined ( NO_POPEN ) <S2SV_StartBug> } else if ( ! memcmp ( buf + 5 , \"exec\" , 4 ) ) { <S2SV_EndBug> do_ssi_exec ( conn , buf + 9 ) ; # endif } else { mg_cry_internal ( conn , \"%s:<S2SV_blank>unknown<S2SV_blank>SSI<S2SV_blank>\" \"command:<S2SV_blank>\\\\\"%s\\\\\"\" , path , buf ) ; } len = 0 ; in_ssi_tag = in_tag = 0 ; } else { ( void ) mg_write ( conn , buf , ( size_t ) len ) ; len = 0 ; in_tag = 0 ; } } else { buf [ len ++ ] = ( char ) ( ch & 0xff ) ; if ( ( len == 5 ) && ! memcmp ( buf , \"<!--#\" , 5 ) ) { in_ssi_tag = 1 ; } if ( ( len + 2 ) > ( int ) sizeof ( buf ) ) { mg_cry_internal ( conn , \"%s:<S2SV_blank>tag<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\" , path ) ; return ; } } } else { if ( ch == '<' ) { in_tag = 1 ; if ( len > 0 ) { ( void ) mg_write ( conn , buf , ( size_t ) len ) ; } len = 1 ; buf [ 0 ] = '<' ; } else { buf [ len ++ ] = ( char ) ( ch & 0xff ) ; if ( len == ( int ) sizeof ( buf ) ) { mg_write ( conn , buf , ( size_t ) len ) ; len = 0 ; } } } } if ( len > 0 ) { mg_write ( conn , buf , ( size_t ) len ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( len > 12 ) && <S2SV_ModStart> else if ( ( len > 9 ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15858\n\n```\nCWE-476 static bool CopyKeyAliasesToKeymap ( struct xkb_keymap * keymap , KeyNamesInfo * info ) { AliasInfo * alias ; unsigned i , num_key_aliases ; struct xkb_key_alias * key_aliases ; num_key_aliases = 0 ; darray_foreach ( alias , info -> aliases ) { if ( ! XkbKeyByName ( keymap , alias -> real , false ) ) { log_vrb ( info -> ctx , 5 , \"Attempt<S2SV_blank>to<S2SV_blank>alias<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>non-existent<S2SV_blank>key<S2SV_blank>%s;<S2SV_blank>Ignored\\\\n\" , KeyNameText ( info -> ctx , alias -> alias ) , KeyNameText ( info -> ctx , alias -> real ) ) ; alias -> real = XKB_ATOM_NONE ; continue ; } if ( XkbKeyByName ( keymap , alias -> alias , false ) ) { log_vrb ( info -> ctx , 5 , \"Attempt<S2SV_blank>to<S2SV_blank>create<S2SV_blank>alias<S2SV_blank>with<S2SV_blank>the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>a<S2SV_blank>real<S2SV_blank>key;<S2SV_blank>\" \"Alias<S2SV_blank>\\\\\"%s<S2SV_blank>=<S2SV_blank>%s\\\\\"<S2SV_blank>ignored\\\\n\" , KeyNameText ( info -> ctx , alias -> alias ) , KeyNameText ( info -> ctx , alias -> real ) ) ; alias -> real = XKB_ATOM_NONE ; continue ; } num_key_aliases ++ ; } key_aliases = NULL ; if ( num_key_aliases > 0 ) { key_aliases = calloc ( num_key_aliases , sizeof ( * key_aliases ) ) ; if ( ! key_aliases ) return false ; <S2SV_StartBug> } <S2SV_EndBug> i = 0 ; darray_foreach ( alias , info -> aliases ) { if ( alias -> real != XKB_ATOM_NONE ) { key_aliases [ i ] . alias = alias -> alias ; key_aliases [ i ] . real = alias -> real ; i ++ ; } } <S2SV_StartBug> keymap -> num_key_aliases = num_key_aliases ; <S2SV_EndBug> keymap -> key_aliases = key_aliases ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return false ; <S2SV_ModEnd> i = 0 <S2SV_ModStart> ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-273(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18276\n\n```\nCWE-273 char * * glob_vector ( pat , dir , flags ) char * pat ; char * dir ; int flags ; { DIR * d ; register struct dirent * dp ; struct globval * lastlink , * e , * dirlist ; register struct globval * nextlink ; register char * nextname , * npat , * subdir ; unsigned int count ; int lose , skip , ndirs , isdir , sdlen , add_current , patlen ; register char * * name_vector ; register unsigned int i ; int mflags ; int pflags ; <S2SV_StartBug> int nalloca ; <S2SV_EndBug> struct globval * firstmalloc , * tmplink ; char * convfn ; lastlink = 0 ; count = lose = skip = add_current = 0 ; firstmalloc = 0 ; nalloca = 0 ; name_vector = NULL ; if ( pat == 0 || * pat == '\\\\0' ) { if ( glob_testdir ( dir , 0 ) < 0 ) return ( ( char * * ) & glob_error_return ) ; nextlink = ( struct globval * ) alloca ( sizeof ( struct globval ) ) ; if ( nextlink == NULL ) return ( ( char * * ) NULL ) ; nextlink -> next = ( struct globval * ) 0 ; nextname = ( char * ) malloc ( 1 ) ; if ( nextname == 0 ) lose = 1 ; else { lastlink = nextlink ; nextlink -> name = nextname ; nextname [ 0 ] = '\\\\0' ; count = 1 ; } skip = 1 ; } patlen = ( pat && * pat ) ? strlen ( pat ) : 0 ; <S2SV_StartBug> if ( skip == 0 && glob_pattern_p ( pat ) == 0 ) <S2SV_EndBug> { int dirlen ; struct stat finfo ; if ( glob_testdir ( dir , 0 ) < 0 ) return ( ( char * * ) & glob_error_return ) ; dirlen = strlen ( dir ) ; nextname = ( char * ) malloc ( dirlen + patlen + 2 ) ; npat = ( char * ) malloc ( patlen + 1 ) ; if ( nextname == 0 || npat == 0 ) { FREE ( nextname ) ; FREE ( npat ) ; lose = 1 ; } else { strcpy ( npat , pat ) ; dequote_pathname ( npat ) ; strcpy ( nextname , dir ) ; nextname [ dirlen ++ ] = '/' ; strcpy ( nextname + dirlen , npat ) ; if ( GLOB_TESTNAME ( nextname ) >= 0 ) { free ( nextname ) ; nextlink = ( struct globval * ) alloca ( sizeof ( struct globval ) ) ; if ( nextlink ) { nextlink -> next = ( struct globval * ) 0 ; lastlink = nextlink ; nextlink -> name = npat ; count = 1 ; } else { free ( npat ) ; lose = 1 ; } } else { free ( nextname ) ; free ( npat ) ; } } skip = 1 ; } if ( skip == 0 ) { # if defined ( OPENDIR_NOT_ROBUST ) if ( glob_testdir ( dir , 0 ) < 0 ) return ( ( char * * ) & glob_error_return ) ; # endif d = opendir ( dir ) ; if ( d == NULL ) return ( ( char * * ) & glob_error_return ) ; mflags = ( noglob_dot_filenames ? FNM_PERIOD : 0 ) | FNM_PATHNAME ; # ifdef FNM_CASEFOLD if ( glob_ignore_case ) mflags |= FNM_CASEFOLD ; # endif if ( extended_glob ) mflags |= FNM_EXTMATCH ; add_current = ( ( flags & ( GX_ALLDIRS | GX_ADDCURDIR ) ) == ( GX_ALLDIRS | GX_ADDCURDIR ) ) ; while ( 1 ) { if ( interrupt_state || terminating_signal ) { lose = 1 ; break ; } else if ( signal_is_pending ( SIGINT ) ) { lose = 1 ; break ; } dp = readdir ( d ) ; if ( dp == NULL ) break ; if ( REAL_DIR_ENTRY ( dp ) == 0 ) continue ; # if 0 if ( dp -> d_name == 0 || * dp -> d_name == 0 ) continue ; # endif # if HANDLE_MULTIBYTE if ( MB_CUR_MAX > 1 && mbskipname ( pat , dp -> d_name , flags ) ) continue ; else # endif if ( skipname ( pat , dp -> d_name , flags ) ) continue ; if ( flags & ( GX_MATCHDIRS | GX_ALLDIRS ) ) { pflags = ( flags & GX_ALLDIRS ) ? MP_RMDOT : 0 ; if ( flags & GX_NULLDIR ) pflags |= MP_IGNDOT ; subdir = sh_makepath ( dir , dp -> d_name , pflags ) ; isdir = glob_testdir ( subdir , flags ) ; if ( isdir < 0 && ( flags & GX_MATCHDIRS ) ) { free ( subdir ) ; continue ; } } if ( flags & GX_ALLDIRS ) { if ( isdir == 0 ) { dirlist = finddirs ( pat , subdir , ( flags & ~ GX_ADDCURDIR ) , & e , & ndirs ) ; if ( dirlist == & finddirs_error_return ) { free ( subdir ) ; lose = 1 ; break ; } if ( ndirs ) { if ( firstmalloc == 0 ) firstmalloc = e ; e -> next = lastlink ; lastlink = dirlist ; count += ndirs ; } } nextlink = ( struct globval * ) malloc ( sizeof ( struct globval ) ) ; if ( firstmalloc == 0 ) firstmalloc = nextlink ; sdlen = strlen ( subdir ) ; nextname = ( char * ) malloc ( sdlen + 1 ) ; if ( nextlink == 0 || nextname == 0 ) { FREE ( nextlink ) ; FREE ( nextname ) ; free ( subdir ) ; lose = 1 ; break ; } nextlink -> next = lastlink ; lastlink = nextlink ; nextlink -> name = nextname ; bcopy ( subdir , nextname , sdlen + 1 ) ; free ( subdir ) ; ++ count ; continue ; } else if ( flags & GX_MATCHDIRS ) free ( subdir ) ; convfn = fnx_fromfs ( dp -> d_name , D_NAMLEN ( dp ) ) ; if ( strmatch ( pat , convfn , mflags ) != FNM_NOMATCH ) { if ( nalloca < ALLOCA_MAX ) { nextlink = ( struct globval * ) alloca ( sizeof ( struct globval ) ) ; nalloca += sizeof ( struct globval ) ; } else { nextlink = ( struct globval * ) malloc ( sizeof ( struct globval ) ) ; if ( firstmalloc == 0 ) firstmalloc = nextlink ; } nextname = ( char * ) malloc ( D_NAMLEN ( dp ) + 1 ) ; if ( nextlink == 0 || nextname == 0 ) { FREE ( nextlink ) ; FREE ( nextname ) ; lose = 1 ; break ; } nextlink -> next = lastlink ; lastlink = nextlink ; nextlink -> name = nextname ; bcopy ( dp -> d_name , nextname , D_NAMLEN ( dp ) + 1 ) ; ++ count ; } } ( void ) closedir ( d ) ; } if ( add_current ) { sdlen = strlen ( dir ) ; nextname = ( char * ) malloc ( sdlen + 1 ) ; nextlink = ( struct globval * ) malloc ( sizeof ( struct globval ) ) ; if ( nextlink == 0 || nextname == 0 ) { FREE ( nextlink ) ; FREE ( nextname ) ; lose = 1 ; } else { nextlink -> name = nextname ; nextlink -> next = lastlink ; lastlink = nextlink ; if ( flags & GX_NULLDIR ) nextname [ 0 ] = '\\\\0' ; else bcopy ( dir , nextname , sdlen + 1 ) ; ++ count ; } } if ( lose == 0 ) { name_vector = ( char * * ) malloc ( ( count + 1 ) * sizeof ( char * ) ) ; lose |= name_vector == NULL ; } if ( lose ) { tmplink = 0 ; while ( lastlink ) { if ( firstmalloc ) { if ( lastlink == firstmalloc ) firstmalloc = 0 ; tmplink = lastlink ; } else tmplink = 0 ; free ( lastlink -> name ) ; lastlink = lastlink -> next ; FREE ( tmplink ) ; } return ( ( char * * ) NULL ) ; } for ( tmplink = lastlink , i = 0 ; i < count ; ++ i ) { name_vector [ i ] = tmplink -> name ; tmplink = tmplink -> next ; } name_vector [ count ] = NULL ; if ( firstmalloc ) { tmplink = 0 ; while ( lastlink ) { tmplink = lastlink ; if ( lastlink == firstmalloc ) lastlink = firstmalloc = 0 ; else lastlink = lastlink -> next ; free ( tmplink ) ; } } return ( name_vector ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pflags ; int hasglob ; int <S2SV_ModStart> : 0 ; hasglob = 0 ; <S2SV_ModStart> == 0 && ( hasglob = <S2SV_ModStart> ( pat ) ) == 0 || hasglob == 2 <S2SV_ModEnd> ) { int\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19841\n\n```\nCWE-125 int WavpackVerifySingleBlock ( unsigned char * buffer , int verify_checksum ) { WavpackHeader * wphdr = ( WavpackHeader * ) buffer ; uint32_t checksum_passed = 0 , bcount , meta_bc ; unsigned char * dp , meta_id , c1 , c2 ; if ( strncmp ( wphdr -> ckID , \"wvpk\" , 4 ) || wphdr -> ckSize + 8 < sizeof ( WavpackHeader ) ) return FALSE ; bcount = wphdr -> ckSize - sizeof ( WavpackHeader ) + 8 ; dp = ( unsigned char * ) ( wphdr + 1 ) ; while ( bcount >= 2 ) { meta_id = * dp ++ ; c1 = * dp ++ ; meta_bc = c1 << 1 ; bcount -= 2 ; if ( meta_id & ID_LARGE ) { if ( bcount < 2 ) return FALSE ; c1 = * dp ++ ; c2 = * dp ++ ; meta_bc += ( ( uint32_t ) c1 << 9 ) + ( ( uint32_t ) c2 << 17 ) ; bcount -= 2 ; } if ( bcount < meta_bc ) return FALSE ; if ( verify_checksum && ( meta_id & ID_UNIQUE ) == ID_BLOCK_CHECKSUM ) { # ifdef BITSTREAM_SHORTS uint16_t * csptr = ( uint16_t * ) buffer ; # else unsigned char * csptr = buffer ; # endif int wcount = ( int ) ( dp - 2 - buffer ) >> 1 ; uint32_t csum = ( uint32_t ) - 1 ; if ( ( meta_id & ID_ODD_SIZE ) || meta_bc < 2 || meta_bc > 4 ) return FALSE ; # ifdef BITSTREAM_SHORTS while ( wcount -- ) csum = ( csum * 3 ) + * csptr ++ ; # else WavpackNativeToLittleEndian ( ( WavpackHeader * ) buffer , WavpackHeaderFormat ) ; while ( wcount -- ) { csum = ( csum * 3 ) + csptr [ 0 ] + ( csptr [ 1 ] << 8 ) ; csptr += 2 ; } WavpackLittleEndianToNative ( ( WavpackHeader * ) buffer , WavpackHeaderFormat ) ; # endif if ( meta_bc == 4 ) { <S2SV_StartBug> if ( * dp ++ != ( csum & 0xff ) || * dp ++ != ( ( csum >> 8 ) & 0xff ) || * dp ++ != ( ( csum >> 16 ) & 0xff ) || * dp ++ != ( ( csum >> 24 ) & 0xff ) ) <S2SV_EndBug> return FALSE ; } else { csum ^= csum >> 16 ; <S2SV_StartBug> if ( * dp ++ != ( csum & 0xff ) || * dp ++ != ( ( csum >> 8 ) & 0xff ) ) <S2SV_EndBug> return FALSE ; } checksum_passed ++ ; } bcount -= meta_bc ; dp += meta_bc ; } return ( bcount == 0 ) && ( ! verify_checksum || ! ( wphdr -> flags & HAS_CHECKSUM ) || checksum_passed ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( * dp <S2SV_ModEnd> != ( csum <S2SV_ModStart> 0xff ) || dp [ 1 ] <S2SV_ModEnd> != ( ( <S2SV_ModStart> 0xff ) || dp [ 2 ] <S2SV_ModEnd> != ( ( <S2SV_ModStart> 0xff ) || dp [ 3 ] <S2SV_ModEnd> != ( ( <S2SV_ModStart> ( * dp <S2SV_ModEnd> != ( csum <S2SV_ModStart> 0xff ) || dp [ 1 ] <S2SV_ModEnd> != ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 static unsigned int do_decrypt ( const RIJNDAEL_context * ctx , unsigned char * bx , const unsigned char * ax ) { # ifdef USE_AMD64_ASM return _gcry_aes_amd64_decrypt_block ( ctx -> keyschdec , bx , ax , ctx -> rounds , <S2SV_StartBug> & dec_tables ) ; <S2SV_EndBug> # elif defined ( USE_ARM_ASM ) return _gcry_aes_arm_decrypt_block ( ctx -> keyschdec , bx , ax , ctx -> rounds , <S2SV_StartBug> & dec_tables ) ; <S2SV_EndBug> # else return do_decrypt_fn ( ctx , bx , ax ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rounds , dec_tables . T <S2SV_ModEnd> ) ; # <S2SV_ModStart> -> rounds , dec_tables . T <S2SV_ModEnd> ) ; #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3842\n\n```\nCWE-119 int32_t DownmixLib_Create ( const effect_uuid_t * uuid , <S2SV_StartBug> int32_t sessionId , <S2SV_EndBug> <S2SV_StartBug> int32_t ioId , <S2SV_EndBug> effect_handle_t * pHandle ) { int ret ; int i ; downmix_module_t * module ; const effect_descriptor_t * desc ; ALOGV ( \"DownmixLib_Create()\" ) ; # ifdef DOWNMIX_TEST_CHANNEL_INDEX ALOGI ( \"DOWNMIX_TEST_CHANNEL_INDEX:<S2SV_blank>should<S2SV_blank>work:\" ) ; Downmix_testIndexComputation ( AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | AUDIO_CHANNEL_OUT_BACK_CENTER ) ; Downmix_testIndexComputation ( CHANNEL_MASK_QUAD_SIDE | CHANNEL_MASK_QUAD_BACK ) ; Downmix_testIndexComputation ( CHANNEL_MASK_5POINT1_SIDE | AUDIO_CHANNEL_OUT_BACK_CENTER ) ; Downmix_testIndexComputation ( CHANNEL_MASK_5POINT1_BACK | AUDIO_CHANNEL_OUT_BACK_CENTER ) ; ALOGI ( \"DOWNMIX_TEST_CHANNEL_INDEX:<S2SV_blank>should<S2SV_blank>NOT<S2SV_blank>work:\" ) ; Downmix_testIndexComputation ( AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | AUDIO_CHANNEL_OUT_BACK_LEFT ) ; Downmix_testIndexComputation ( AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_FRONT_RIGHT | AUDIO_CHANNEL_OUT_LOW_FREQUENCY | AUDIO_CHANNEL_OUT_SIDE_LEFT ) ; Downmix_testIndexComputation ( AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_BACK_LEFT | AUDIO_CHANNEL_OUT_BACK_RIGHT ) ; Downmix_testIndexComputation ( AUDIO_CHANNEL_OUT_FRONT_LEFT | AUDIO_CHANNEL_OUT_SIDE_LEFT | AUDIO_CHANNEL_OUT_SIDE_RIGHT ) ; # endif if ( pHandle == NULL || uuid == NULL ) { return - EINVAL ; } for ( i = 0 ; i < kNbEffects ; i ++ ) { desc = gDescriptors [ i ] ; if ( memcmp ( uuid , & desc -> uuid , sizeof ( effect_uuid_t ) ) == 0 ) { break ; } } if ( i == kNbEffects ) { return - ENOENT ; } module = malloc ( sizeof ( downmix_module_t ) ) ; module -> itfe = & gDownmixInterface ; module -> context . state = DOWNMIX_STATE_UNINITIALIZED ; ret = Downmix_Init ( module ) ; if ( ret < 0 ) { ALOGW ( \"DownmixLib_Create()<S2SV_blank>init<S2SV_blank>failed\" ) ; free ( module ) ; return ret ; } * pHandle = ( effect_handle_t ) module ; ALOGV ( \"DownmixLib_Create()<S2SV_blank>%p<S2SV_blank>,<S2SV_blank>size<S2SV_blank>%zu\" , module , sizeof ( downmix_module_t ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int32_t sessionId __unused <S2SV_ModStart> , int32_t ioId __unused\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 void inet6_destroy_sock ( struct sock * sk ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct sk_buff * skb ; struct ipv6_txoptions * opt ; skb = xchg ( & np -> pktoptions , NULL ) ; if ( skb ) kfree_skb ( skb ) ; skb = xchg ( & np -> rxpmtu , NULL ) ; if ( skb ) kfree_skb ( skb ) ; fl6_free_socklist ( sk ) ; <S2SV_StartBug> opt = xchg ( & np -> opt , NULL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( opt ) <S2SV_EndBug> <S2SV_StartBug> sock_kfree_s ( sk , opt , opt -> tot_len ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = xchg ( ( __force struct ipv6_txoptions * * ) <S2SV_ModStart> ( opt ) { atomic_sub ( <S2SV_ModEnd> opt -> tot_len <S2SV_ModStart> opt -> tot_len , & sk -> sk_omem_alloc ) ; txopt_put ( opt <S2SV_ModStart> ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9387\n\n```\nCWE-190 static int jpc_dec_process_siz ( jpc_dec_t * dec , jpc_ms_t * ms ) { jpc_siz_t * siz = & ms -> parms . siz ; int compno ; int tileno ; jpc_dec_tile_t * tile ; jpc_dec_tcomp_t * tcomp ; int htileno ; int vtileno ; jpc_dec_cmpt_t * cmpt ; <S2SV_StartBug> dec -> xstart = siz -> xoff ; <S2SV_EndBug> dec -> ystart = siz -> yoff ; dec -> xend = siz -> width ; dec -> yend = siz -> height ; dec -> tilewidth = siz -> tilewidth ; dec -> tileheight = siz -> tileheight ; dec -> tilexoff = siz -> tilexoff ; dec -> tileyoff = siz -> tileyoff ; dec -> numcomps = siz -> numcomps ; if ( ! ( dec -> cp = jpc_dec_cp_create ( dec -> numcomps ) ) ) { return - 1 ; } if ( ! ( dec -> cmpts = jas_alloc2 ( dec -> numcomps , sizeof ( jpc_dec_cmpt_t ) ) ) ) { return - 1 ; } for ( compno = 0 , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ cmpt ) { cmpt -> prec = siz -> comps [ compno ] . prec ; cmpt -> sgnd = siz -> comps [ compno ] . sgnd ; cmpt -> hstep = siz -> comps [ compno ] . hsamp ; cmpt -> vstep = siz -> comps [ compno ] . vsamp ; cmpt -> width = JPC_CEILDIV ( dec -> xend , cmpt -> hstep ) - JPC_CEILDIV ( dec -> xstart , cmpt -> hstep ) ; cmpt -> height = JPC_CEILDIV ( dec -> yend , cmpt -> vstep ) - JPC_CEILDIV ( dec -> ystart , cmpt -> vstep ) ; cmpt -> hsubstep = 0 ; cmpt -> vsubstep = 0 ; } dec -> image = 0 ; dec -> numhtiles = JPC_CEILDIV ( dec -> xend - dec -> tilexoff , dec -> tilewidth ) ; dec -> numvtiles = JPC_CEILDIV ( dec -> yend - dec -> tileyoff , dec -> tileheight ) ; <S2SV_StartBug> dec -> numtiles = dec -> numhtiles * dec -> numvtiles ; <S2SV_EndBug> JAS_DBGLOG ( 10 , ( \"numtiles<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>numhtiles<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>numvtiles<S2SV_blank>=<S2SV_blank>%d;\\\\n\" , dec -> numtiles , dec -> numhtiles , dec -> numvtiles ) ) ; if ( ! ( dec -> tiles = jas_alloc2 ( dec -> numtiles , sizeof ( jpc_dec_tile_t ) ) ) ) { return - 1 ; } <S2SV_StartBug> for ( tileno = 0 , tile = dec -> tiles ; tileno < dec -> numtiles ; ++ tileno , <S2SV_EndBug> ++ tile ) { htileno = tileno % dec -> numhtiles ; vtileno = tileno / dec -> numhtiles ; tile -> realmode = 0 ; tile -> state = JPC_TILE_INIT ; tile -> xstart = JAS_MAX ( dec -> tilexoff + htileno * dec -> tilewidth , dec -> xstart ) ; tile -> ystart = JAS_MAX ( dec -> tileyoff + vtileno * dec -> tileheight , dec -> ystart ) ; tile -> xend = JAS_MIN ( dec -> tilexoff + ( htileno + 1 ) * dec -> tilewidth , dec -> xend ) ; tile -> yend = JAS_MIN ( dec -> tileyoff + ( vtileno + 1 ) * dec -> tileheight , dec -> yend ) ; tile -> numparts = 0 ; tile -> partno = 0 ; tile -> pkthdrstream = 0 ; tile -> pkthdrstreampos = 0 ; tile -> pptstab = 0 ; tile -> cp = 0 ; tile -> pi = 0 ; if ( ! ( tile -> tcomps = jas_alloc2 ( dec -> numcomps , sizeof ( jpc_dec_tcomp_t ) ) ) ) { return - 1 ; } for ( compno = 0 , cmpt = dec -> cmpts , tcomp = tile -> tcomps ; compno < dec -> numcomps ; ++ compno , ++ cmpt , ++ tcomp ) { tcomp -> rlvls = 0 ; tcomp -> numrlvls = 0 ; tcomp -> data = 0 ; tcomp -> xstart = JPC_CEILDIV ( tile -> xstart , cmpt -> hstep ) ; tcomp -> ystart = JPC_CEILDIV ( tile -> ystart , cmpt -> vstep ) ; tcomp -> xend = JPC_CEILDIV ( tile -> xend , cmpt -> hstep ) ; tcomp -> yend = JPC_CEILDIV ( tile -> yend , cmpt -> vstep ) ; tcomp -> tsfb = 0 ; } } dec -> pkthdrstreams = 0 ; dec -> state = JPC_MH ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cmpt ; size_t size ; <S2SV_ModStart> tileheight ) ; if ( ! jas_safe_size_mul ( <S2SV_ModEnd> dec -> numhtiles <S2SV_ModStart> dec -> numhtiles , <S2SV_ModEnd> dec -> numvtiles <S2SV_ModStart> dec -> numvtiles , & size <S2SV_ModEnd> ) ) { <S2SV_ModStart> 1 ; } dec -> numtiles = size ; JAS_DBGLOG ( 10 , ( \"numtiles<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>numhtiles<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>numvtiles<S2SV_blank>=<S2SV_blank>%d;\\\\n\" , dec -> numtiles , dec -> numhtiles , dec -> numvtiles ) ) ; if ( ! ( dec -> tiles = jas_alloc2 ( dec -> numtiles , sizeof ( jpc_dec_tile_t ) ) ) ) { return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-252(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16643\n\n```\nCWE-252 static Image * ReadDCMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowDCMException ( exception , message ) { if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; if ( stream_info != ( DCMStreamInfo * ) NULL ) stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; ThrowReaderException ( ( exception ) , ( message ) ) ; } <S2SV_EndBug> char explicit_vr [ MagickPathExtent ] , implicit_vr [ MagickPathExtent ] , magick [ MagickPathExtent ] , photometric [ MagickPathExtent ] ; DCMInfo info ; DCMStreamInfo * stream_info ; Image * image ; int * bluemap , datum , * greenmap , * graymap , * redmap ; MagickBooleanType explicit_file , explicit_retry , use_explicit ; MagickOffsetType offset ; register unsigned char * p ; register ssize_t i ; size_t colors , height , length , number_scenes , quantum , status , width ; ssize_t count , scene ; unsigned char * data ; unsigned short group , element ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 8UL ; image -> endian = LSBEndian ; ( void ) memset ( & info , 0 , sizeof ( info ) ) ; data = ( unsigned char * ) NULL ; graymap = ( int * ) NULL ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; stream_info = ( DCMStreamInfo * ) AcquireMagickMemory ( sizeof ( * stream_info ) ) ; if ( stream_info == ( DCMStreamInfo * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( stream_info , 0 , sizeof ( * stream_info ) ) ; count = ReadBlob ( image , 128 , ( unsigned char * ) magick ) ; if ( count != 128 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) magick ) ; if ( ( count != 4 ) || ( LocaleNCompare ( magick , \"DICM\" , 4 ) != 0 ) ) { offset = SeekBlob ( image , 0L , SEEK_SET ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickString ( photometric , \"MONOCHROME1<S2SV_blank>\" , MagickPathExtent ) ; info . bits_allocated = 8 ; info . bytes_per_pixel = 1 ; info . depth = 8 ; info . mask = 0xffff ; info . max_value = 255UL ; info . samples_per_pixel = 1 ; info . signed_data = ( ~ 0UL ) ; info . rescale_slope = 1.0 ; data = ( unsigned char * ) NULL ; element = 0 ; explicit_vr [ 2 ] = '\\\\0' ; explicit_file = MagickFalse ; colors = 0 ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; graymap = ( int * ) NULL ; height = 0 ; number_scenes = 1 ; use_explicit = MagickFalse ; explicit_retry = MagickFalse ; width = 0 ; while ( TellBlob ( image ) < ( MagickOffsetType ) GetBlobSize ( image ) ) { for ( group = 0 ; ( group != 0x7FE0 ) || ( element != 0x0010 ) ; ) { image -> offset = ( ssize_t ) TellBlob ( image ) ; group = ReadBlobLSBShort ( image ) ; element = ReadBlobLSBShort ( image ) ; if ( ( group == 0xfffc ) && ( element == 0xfffc ) ) break ; if ( ( group != 0x0002 ) && ( image -> endian == MSBEndian ) ) { group = ( unsigned short ) ( ( group << 8 ) | ( ( group >> 8 ) & 0xFF ) ) ; element = ( unsigned short ) ( ( element << 8 ) | ( ( element >> 8 ) & 0xFF ) ) ; } quantum = 0 ; for ( i = 0 ; dicom_info [ i ] . group < 0xffff ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) CopyMagickString ( implicit_vr , dicom_info [ i ] . vr , MagickPathExtent ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) explicit_vr ) ; if ( count != 2 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( explicit_file == MagickFalse ) && ( group != 0x0002 ) ) explicit_file = ( isupper ( ( unsigned char ) * explicit_vr ) != MagickFalse ) && ( isupper ( ( unsigned char ) * ( explicit_vr + 1 ) ) != MagickFalse ) ? MagickTrue : MagickFalse ; use_explicit = ( ( group == 0x0002 ) && ( explicit_retry == MagickFalse ) ) || ( explicit_file != MagickFalse ) ? MagickTrue : MagickFalse ; if ( ( use_explicit != MagickFalse ) && ( strncmp ( implicit_vr , \"xs\" , 2 ) == 0 ) ) ( void ) CopyMagickString ( implicit_vr , explicit_vr , MagickPathExtent ) ; if ( ( use_explicit == MagickFalse ) || ( strncmp ( implicit_vr , \"!!\" , 2 ) == 0 ) ) { offset = SeekBlob ( image , ( MagickOffsetType ) - 2 , SEEK_CUR ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; quantum = 4 ; } else { quantum = 2 ; if ( ( strncmp ( explicit_vr , \"OB\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"UN\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"SQ\" , 2 ) == 0 ) ) { ( void ) ReadBlobLSBShort ( image ) ; quantum = 4 ; } } datum = 0 ; if ( quantum == 4 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( quantum == 2 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } quantum = 0 ; length = 1 ; if ( datum != 0 ) { if ( ( strncmp ( implicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SS\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"US\" , 2 ) == 0 ) ) quantum = 2 ; else if ( ( strncmp ( implicit_vr , \"FL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"OF\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"UL\" , 2 ) == 0 ) ) quantum = 4 ; else if ( strncmp ( implicit_vr , \"FD\" , 2 ) == 0 ) quantum = 8 ; else quantum = 1 ; if ( datum != ~ 0 ) length = ( size_t ) datum / quantum ; else { quantum = 0 ; length = 0 ; } } if ( image_info -> verbose != MagickFalse ) { if ( use_explicit == MagickFalse ) explicit_vr [ 0 ] = '\\\\0' ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) FormatLocaleFile ( stdout , \"0x%04lX<S2SV_blank>%4ld<S2SV_blank>%s-%s<S2SV_blank>(0x%04lx,0x%04lx)\" , ( unsigned long ) image -> offset , ( long ) length , implicit_vr , explicit_vr , ( unsigned long ) group , ( unsigned long ) element ) ; if ( dicom_info [ i ] . description != ( char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"<S2SV_blank>%s\" , dicom_info [ i ] . description ) ; ( void ) FormatLocaleFile ( stdout , \":<S2SV_blank>\" ) ; } if ( ( group == 0x7FE0 ) && ( element == 0x0010 ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; break ; } data = ( unsigned char * ) NULL ; if ( ( length == 1 ) && ( quantum == 1 ) ) datum = ReadBlobByte ( image ) ; else if ( ( length == 1 ) && ( quantum == 2 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } else if ( ( length == 1 ) && ( quantum == 4 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( ( quantum != 0 ) && ( length != 0 ) ) { if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ~ length >= 1 ) data = ( unsigned char * ) AcquireQuantumMemory ( length + 1 , quantum * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) quantum * length , data ) ; if ( count != ( ssize_t ) ( quantum * length ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"count=%d<S2SV_blank>quantum=%d<S2SV_blank>\" \"length=%d<S2SV_blank>group=%d\\\\n\" , ( int ) count , ( int ) quantum , ( int ) length , ( int ) group ) ; ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } data [ length * quantum ] = '\\\\0' ; } if ( ( ( ( unsigned int ) group << 16 ) | element ) == 0xFFFEE0DD ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; continue ; } switch ( group ) { case 0x0002 : { switch ( element ) { case 0x0010 : { char transfer_syntax [ MagickPathExtent ] ; if ( ( datum == 0 ) && ( explicit_retry == MagickFalse ) ) { explicit_retry = MagickTrue ; ( void ) SeekBlob ( image , ( MagickOffsetType ) 0 , SEEK_SET ) ; group = 0 ; element = 0 ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"Corrupted<S2SV_blank>image<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>explicit<S2SV_blank>format\\\\n\" ) ; break ; } * transfer_syntax = '\\\\0' ; if ( data != ( unsigned char * ) NULL ) ( void ) CopyMagickString ( transfer_syntax , ( char * ) data , MagickPathExtent ) ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"transfer_syntax=%s\\\\n\" , ( const char * ) transfer_syntax ) ; if ( strncmp ( transfer_syntax , \"1.2.840.10008.1.2\" , 17 ) == 0 ) { int subtype , type ; type = 1 ; subtype = 0 ; if ( strlen ( transfer_syntax ) > 17 ) { count = ( ssize_t ) sscanf ( transfer_syntax + 17 , \".%d.%d\" , & type , & subtype ) ; if ( count < 1 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } switch ( type ) { case 1 : { image -> endian = LSBEndian ; break ; } case 2 : { image -> endian = MSBEndian ; break ; } case 4 : { if ( ( subtype >= 80 ) && ( subtype <= 81 ) ) image -> compression = JPEGCompression ; else if ( ( subtype >= 90 ) && ( subtype <= 93 ) ) image -> compression = JPEG2000Compression ; else image -> compression = JPEGCompression ; break ; } case 5 : { image -> compression = RLECompression ; break ; } } } break ; } default : break ; } break ; } case 0x0028 : { switch ( element ) { case 0x0002 : { info . samples_per_pixel = ( size_t ) datum ; if ( ( info . samples_per_pixel == 0 ) || ( info . samples_per_pixel > 4 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; } case 0x0004 : { if ( data == ( unsigned char * ) NULL ) break ; for ( i = 0 ; i < ( ssize_t ) MagickMin ( length , MagickPathExtent - 1 ) ; i ++ ) photometric [ i ] = ( char ) data [ i ] ; photometric [ i ] = '\\\\0' ; info . polarity = LocaleCompare ( photometric , \"MONOCHROME1<S2SV_blank>\" ) == 0 ? MagickTrue : MagickFalse ; break ; } case 0x0006 : { if ( datum == 1 ) image -> interlace = PlaneInterlace ; break ; } case 0x0008 : { if ( data == ( unsigned char * ) NULL ) break ; number_scenes = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x0010 : { height = ( size_t ) datum ; break ; } case 0x0011 : { width = ( size_t ) datum ; break ; } case 0x0100 : { info . bits_allocated = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( datum > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . bits_allocated ; if ( ( info . depth == 0 ) || ( info . depth > 32 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . bits_allocated ) - 1 ; image -> depth = info . depth ; break ; } case 0x0101 : { info . significant_bits = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( info . significant_bits > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . significant_bits ; if ( ( info . depth == 0 ) || ( info . depth > 16 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . significant_bits ) - 1 ; info . mask = ( size_t ) GetQuantumRange ( info . significant_bits ) ; image -> depth = info . depth ; break ; } case 0x0102 : { break ; } case 0x0103 : { info . signed_data = ( size_t ) datum ; break ; } case 0x1050 : { if ( data != ( unsigned char * ) NULL ) info . window_center = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1051 : { if ( data != ( unsigned char * ) NULL ) info . window_width = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1052 : { if ( data != ( unsigned char * ) NULL ) info . rescale_intercept = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1053 : { if ( data != ( unsigned char * ) NULL ) info . rescale_slope = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1200 : case 0x3006 : { if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / info . bytes_per_pixel ) ; datum = ( int ) colors ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; graymap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * graymap ) ) ; if ( graymap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( graymap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * graymap ) ) ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) if ( info . bytes_per_pixel == 1 ) graymap [ i ] = ( int ) data [ i ] ; else graymap [ i ] = ( int ) ( ( short * ) data ) [ i ] ; break ; } case 0x1201 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; redmap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * redmap ) ) ; if ( redmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( redmap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * redmap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; redmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1202 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; greenmap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * greenmap ) ) ; if ( greenmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( greenmap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * greenmap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; greenmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1203 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; bluemap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * bluemap ) ) ; if ( bluemap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( bluemap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * bluemap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; bluemap [ i ] = ( int ) index ; p += 2 ; } break ; } default : break ; } break ; } case 0x2050 : { switch ( element ) { case 0x0020 : { if ( ( data != ( unsigned char * ) NULL ) && ( strncmp ( ( char * ) data , \"INVERSE\" , 7 ) == 0 ) ) info . polarity = MagickTrue ; break ; } default : break ; } break ; } default : break ; } if ( data != ( unsigned char * ) NULL ) { char * attribute ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; if ( dicom_info [ i ] . description != ( char * ) NULL ) { attribute = AcquireString ( \"dcm:\" ) ; ( void ) ConcatenateString ( & attribute , dicom_info [ i ] . description ) ; for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i == ( ssize_t ) length ) || ( length > 4 ) ) { ( void ) SubstituteString ( & attribute , \"<S2SV_blank>\" , \"\" ) ; ( void ) SetImageProperty ( image , attribute , ( char * ) data , exception ) ; } attribute = DestroyString ( attribute ) ; } } if ( image_info -> verbose != MagickFalse ) { if ( data == ( unsigned char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"%d\\\\n\" , datum ) ; else { for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i != ( ssize_t ) length ) && ( length <= 4 ) ) { ssize_t j ; datum = 0 ; for ( j = ( ssize_t ) length - 1 ; j >= 0 ; j -- ) datum = ( 256 * datum + data [ j ] ) ; ( void ) FormatLocaleFile ( stdout , \"%d\" , datum ) ; } else for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( isprint ( ( int ) data [ i ] ) != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"%c\" , data [ i ] ) ; else ( void ) FormatLocaleFile ( stdout , \"%c\" , '.' ) ; ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; } } if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( ( group == 0xfffc ) && ( element == 0xfffc ) ) { Image * last ; last = RemoveLastImageFromList ( & image ) ; if ( last != ( Image * ) NULL ) last = DestroyImage ( last ) ; break ; } if ( ( width == 0 ) || ( height == 0 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; if ( info . signed_data == 0xffff ) info . signed_data = ( size_t ) ( info . significant_bits == 16 ? 1 : 0 ) ; if ( ( image -> compression == JPEGCompression ) || ( image -> compression == JPEG2000Compression ) ) { Image * images ; ImageInfo * read_info ; int c ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; ( void ) ( ( ( ssize_t ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; images = NewImageList ( ) ; for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { char filename [ MagickPathExtent ] ; const char * property ; FILE * file ; Image * jpeg_image ; int unique_file ; unsigned int tag ; tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( tag == 0xFFFEE0DD ) break ; if ( tag != 0xFFFEE000 ) { read_info = DestroyImageInfo ( read_info ) ; ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( file == ( FILE * ) NULL ) { ( void ) RelinquishUniqueFileResource ( filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , filename ) ; break ; } for ( c = EOF ; length != 0 ; length -- ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } <S2SV_StartBug> ( void ) fputc ( c , file ) ; <S2SV_EndBug> } ( void ) fclose ( file ) ; if ( c == EOF ) break ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"jpeg:%s\" , filename ) ; if ( image -> compression == JPEG2000Compression ) ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"j2k:%s\" , filename ) ; jpeg_image = ReadImage ( read_info , exception ) ; if ( jpeg_image != ( Image * ) NULL ) { ResetImagePropertyIterator ( image ) ; property = GetNextImageProperty ( image ) ; while ( property != ( const char * ) NULL ) { ( void ) SetImageProperty ( jpeg_image , property , GetImageProperty ( image , property , exception ) , exception ) ; property = GetNextImageProperty ( image ) ; } AppendImageToList ( & images , jpeg_image ) ; } ( void ) RelinquishUniqueFileResource ( filename ) ; } read_info = DestroyImageInfo ( read_info ) ; if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; image = DestroyImageList ( image ) ; return ( GetFirstImageInList ( images ) ) ; } if ( info . depth != ( 1UL * MAGICKCORE_QUANTUM_DEPTH ) ) { QuantumAny range ; length = ( size_t ) ( GetQuantumRange ( info . depth ) + 1 ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; info . scale = ( Quantum * ) AcquireQuantumMemory ( MagickMax ( length , 256 ) , sizeof ( * info . scale ) ) ; if ( info . scale == ( Quantum * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( info . scale , 0 , MagickMax ( length , 256 ) * sizeof ( * info . scale ) ) ; range = GetQuantumRange ( info . depth ) ; for ( i = 0 ; i <= ( ssize_t ) GetQuantumRange ( info . depth ) ; i ++ ) info . scale [ i ] = ScaleAnyToQuantum ( ( size_t ) i , range ) ; } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) { int c ; c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; } tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) { stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; } offset = TellBlob ( image ) + 8 ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } } for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { if ( image_info -> ping != MagickFalse ) break ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; image -> depth = info . depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; image -> colorspace = RGBColorspace ; ( void ) SetImageBackgroundColor ( image , exception ) ; if ( ( image -> colormap == ( PixelInfo * ) NULL ) && ( info . samples_per_pixel == 1 ) ) { int index ; size_t one ; one = 1 ; if ( colors == 0 ) colors = one << info . depth ; if ( AcquireImageColormap ( image , colors , exception ) == MagickFalse ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( redmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = redmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; } if ( greenmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = greenmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . green = ( MagickRealType ) index ; } if ( bluemap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = bluemap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } if ( graymap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = graymap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; image -> colormap [ i ] . green = ( MagickRealType ) index ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) { int c ; c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; } tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; stream_info -> remaining = ( size_t ) ReadBlobLSBLong ( image ) ; if ( ( tag != 0xFFFEE000 ) || ( stream_info -> remaining <= 64 ) || ( EOFBlob ( image ) != MagickFalse ) ) { if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } stream_info -> count = 0 ; stream_info -> segment_count = ReadBlobLSBLong ( image ) ; for ( i = 0 ; i < 15 ; i ++ ) stream_info -> segments [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; stream_info -> remaining -= 64 ; if ( stream_info -> segment_count > 1 ) { info . bytes_per_pixel = 1 ; info . depth = 8 ; if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , ( MagickOffsetType ) stream_info -> offsets [ 0 ] + stream_info -> segments [ 0 ] , SEEK_SET ) ; } } if ( ( info . samples_per_pixel > 1 ) && ( image -> interlace == PlaneInterlace ) ) { register ssize_t x ; register Quantum * q ; ssize_t y ; for ( i = 0 ; i < ( ssize_t ) info . samples_per_pixel ; i ++ ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( ( int ) i ) { case 0 : { SetPixelRed ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 1 : { SetPixelGreen ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 2 : { SetPixelBlue ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 3 : { SetPixelAlpha ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } } else { const char * option ; option = GetImageOption ( image_info , \"dcm:display-range\" ) ; if ( option != ( const char * ) NULL ) { if ( LocaleCompare ( option , \"reset\" ) == 0 ) info . window_width = 0 ; } option = GetImageOption ( image_info , \"dcm:window\" ) ; if ( option != ( char * ) NULL ) { GeometryInfo geometry_info ; MagickStatusType flags ; flags = ParseGeometry ( option , & geometry_info ) ; if ( flags & RhoValue ) info . window_center = geometry_info . rho ; if ( flags & SigmaValue ) info . window_width = geometry_info . sigma ; info . rescale = MagickTrue ; } option = GetImageOption ( image_info , \"dcm:rescale\" ) ; if ( option != ( char * ) NULL ) info . rescale = IsStringTrue ( option ) ; if ( ( info . window_center != 0 ) && ( info . window_width == 0 ) ) info . window_width = info . window_center ; status = ReadDCMPixels ( image , & info , stream_info , MagickTrue , exception ) ; if ( ( status != MagickFalse ) && ( stream_info -> segment_count > 1 ) ) { if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , ( MagickOffsetType ) stream_info -> offsets [ 0 ] + stream_info -> segments [ 1 ] , SEEK_SET ) ; ( void ) ReadDCMPixels ( image , & info , stream_info , MagickFalse , exception ) ; } } if ( SetImageGray ( image , exception ) != MagickFalse ) ( void ) SetImageColorspace ( image , GRAYColorspace , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( number_scenes - 1 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; break ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( TellBlob ( image ) < ( MagickOffsetType ) GetBlobSize ( image ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; break ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , message ) \\\\\\n{ <S2SV_ModEnd> if ( info <S2SV_ModStart> ) ) ; \\\\\\n} <S2SV_ModEnd> char explicit_vr [ <S2SV_ModStart> break ; } if ( <S2SV_ModEnd> fputc ( c <S2SV_ModStart> , file ) != c ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_print_negotiate_flags ( UINT32 flags ) <S2SV_EndBug> { int i ; const char * str ; WLog_INFO ( TAG , \"negotiateFlags<S2SV_blank>\\\\\"0x%08\" PRIX32 \"\\\\\"\" , flags ) ; for ( i = 31 ; i >= 0 ; i -- ) { if ( ( flags >> i ) & 1 ) { str = NTLM_NEGOTIATE_STRINGS [ ( 31 - i ) ] ; WLog_INFO ( TAG , \"\\\\t%s<S2SV_blank>(%d),\" , str , ( 31 - i ) ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 IMPEG2D_ERROR_CODES_T impeg2d_dec_slice ( dec_state_t * ps_dec ) { stream_t * ps_stream ; UWORD32 u4_slice_vertical_position ; UWORD32 u4_slice_vertical_position_extension ; IMPEG2D_ERROR_CODES_T e_error ; ps_stream = & ps_dec -> s_bit_stream ; impeg2d_bit_stream_flush ( ps_stream , START_CODE_PREFIX_LEN ) ; u4_slice_vertical_position = impeg2d_bit_stream_get ( ps_stream , 8 ) ; if ( u4_slice_vertical_position > 2800 ) { u4_slice_vertical_position_extension = impeg2d_bit_stream_get ( ps_stream , 3 ) ; u4_slice_vertical_position += ( u4_slice_vertical_position_extension << 7 ) ; } if ( ( u4_slice_vertical_position > ps_dec -> u2_num_vert_mb ) || ( u4_slice_vertical_position == 0 ) ) { return IMPEG2D_INVALID_VERT_SIZE ; } u4_slice_vertical_position -- ; if ( ps_dec -> u2_mb_y != u4_slice_vertical_position ) { ps_dec -> u2_mb_y = u4_slice_vertical_position ; ps_dec -> u2_mb_x = 0 ; } ps_dec -> u2_first_mb = 1 ; { UWORD16 u2_quant_scale_code ; u2_quant_scale_code = impeg2d_bit_stream_get ( ps_stream , 5 ) ; ps_dec -> u1_quant_scale = ( ps_dec -> u2_q_scale_type ) ? gau1_impeg2_non_linear_quant_scale [ u2_quant_scale_code ] : ( u2_quant_scale_code << 1 ) ; } if ( impeg2d_bit_stream_nxt ( ps_stream , 1 ) == 1 ) { impeg2d_bit_stream_flush ( ps_stream , 9 ) ; <S2SV_StartBug> while ( impeg2d_bit_stream_nxt ( ps_stream , 1 ) == 1 ) <S2SV_EndBug> { impeg2d_bit_stream_flush ( ps_stream , 9 ) ; } } impeg2d_bit_stream_get_bit ( ps_stream ) ; ps_dec -> u2_def_dc_pred [ Y_LUMA ] = 128 << ps_dec -> u2_intra_dc_precision ; ps_dec -> u2_def_dc_pred [ U_CHROMA ] = 128 << ps_dec -> u2_intra_dc_precision ; ps_dec -> u2_def_dc_pred [ V_CHROMA ] = 128 << ps_dec -> u2_intra_dc_precision ; e_error = ps_dec -> pf_decode_slice ( ps_dec ) ; if ( ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE != e_error ) { return e_error ; } if ( ps_dec -> u2_mb_y < ps_dec -> u2_num_vert_mb ) impeg2d_next_start_code ( ps_dec ) ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) == 1 && ps_stream -> u4_offset < ps_stream -> u4_max_offset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_is_skippable_in_plane ( MACROBLOCK * x , BLOCK_SIZE bsize , int plane ) { int result = 1 ; <S2SV_StartBug> struct is_skippable_args args = { x , & result } ; <S2SV_EndBug> vp9_foreach_transformed_block_in_plane ( & x -> e_mbd , bsize , plane , is_skippable , & args ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = { x -> plane [ plane ] . eobs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2150\n\n```\nCWE-264 static int command_write ( struct pci_dev * dev , int offset , u16 value , void * data ) { struct xen_pcibk_dev_data * dev_data ; int err ; <S2SV_StartBug> dev_data = pci_get_drvdata ( dev ) ; <S2SV_EndBug> if ( ! pci_is_enabled ( dev ) && is_enable_cmd ( value ) ) { if ( unlikely ( verbose_request ) ) printk ( KERN_DEBUG DRV_NAME \":<S2SV_blank>%s:<S2SV_blank>enable\\\\n\" , pci_name ( dev ) ) ; err = pci_enable_device ( dev ) ; if ( err ) return err ; if ( dev_data ) dev_data -> enable_intx = 1 ; } else if ( pci_is_enabled ( dev ) && ! is_enable_cmd ( value ) ) { if ( unlikely ( verbose_request ) ) printk ( KERN_DEBUG DRV_NAME \":<S2SV_blank>%s:<S2SV_blank>disable\\\\n\" , pci_name ( dev ) ) ; pci_disable_device ( dev ) ; if ( dev_data ) dev_data -> enable_intx = 0 ; } if ( ! dev -> is_busmaster && is_master_cmd ( value ) ) { if ( unlikely ( verbose_request ) ) printk ( KERN_DEBUG DRV_NAME \":<S2SV_blank>%s:<S2SV_blank>set<S2SV_blank>bus<S2SV_blank>master\\\\n\" , pci_name ( dev ) ) ; pci_set_master ( dev ) ; } if ( value & PCI_COMMAND_INVALIDATE ) { if ( unlikely ( verbose_request ) ) printk ( KERN_DEBUG DRV_NAME \":<S2SV_blank>%s:<S2SV_blank>enable<S2SV_blank>memory-write-invalidate\\\\n\" , pci_name ( dev ) ) ; err = pci_set_mwi ( dev ) ; if ( err ) { pr_warn ( \"%s:<S2SV_blank>cannot<S2SV_blank>enable<S2SV_blank>memory-write-invalidate<S2SV_blank>(%d)\\\\n\" , pci_name ( dev ) , err ) ; value &= ~ PCI_COMMAND_INVALIDATE ; } } <S2SV_StartBug> return pci_write_config_word ( dev , offset , value ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int err ; u16 val ; struct pci_cmd_info * cmd = data ; <S2SV_ModStart> ; } } cmd -> val = value ; if ( ! permissive && ( ! dev_data || ! dev_data -> permissive ) ) return 0 ; err = pci_read_config_word ( dev , offset , & val ) ; if ( err || val == value ) return err ; value &= PCI_COMMAND_GUEST ; value |= val & ~ PCI_COMMAND_GUEST ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1446\n\n```\nCWE-399 static int yam_ioctl ( struct net_device * dev , struct ifreq * ifr , int cmd ) { struct yam_port * yp = netdev_priv ( dev ) ; struct yamdrv_ioctl_cfg yi ; struct yamdrv_ioctl_mcs * ym ; int ioctl_cmd ; if ( copy_from_user ( & ioctl_cmd , ifr -> ifr_data , sizeof ( int ) ) ) return - EFAULT ; if ( yp -> magic != YAM_MAGIC ) return - EINVAL ; if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; if ( cmd != SIOCDEVPRIVATE ) return - EINVAL ; switch ( ioctl_cmd ) { case SIOCYAMRESERVED : return - EINVAL ; case SIOCYAMSMCS : if ( netif_running ( dev ) ) return - EINVAL ; if ( ( ym = kmalloc ( sizeof ( struct yamdrv_ioctl_mcs ) , GFP_KERNEL ) ) == NULL ) return - ENOBUFS ; if ( copy_from_user ( ym , ifr -> ifr_data , sizeof ( struct yamdrv_ioctl_mcs ) ) ) { kfree ( ym ) ; return - EFAULT ; } if ( ym -> bitrate > YAM_MAXBITRATE ) { kfree ( ym ) ; return - EINVAL ; } add_mcs ( ym -> bits , ym -> bitrate , 0 ) ; kfree ( ym ) ; break ; case SIOCYAMSCFG : if ( ! capable ( CAP_SYS_RAWIO ) ) return - EPERM ; if ( copy_from_user ( & yi , ifr -> ifr_data , sizeof ( struct yamdrv_ioctl_cfg ) ) ) return - EFAULT ; if ( ( yi . cfg . mask & YAM_IOBASE ) && netif_running ( dev ) ) return - EINVAL ; if ( ( yi . cfg . mask & YAM_IRQ ) && netif_running ( dev ) ) return - EINVAL ; if ( ( yi . cfg . mask & YAM_BITRATE ) && netif_running ( dev ) ) return - EINVAL ; if ( ( yi . cfg . mask & YAM_BAUDRATE ) && netif_running ( dev ) ) return - EINVAL ; if ( yi . cfg . mask & YAM_IOBASE ) { yp -> iobase = yi . cfg . iobase ; dev -> base_addr = yi . cfg . iobase ; } if ( yi . cfg . mask & YAM_IRQ ) { if ( yi . cfg . irq > 15 ) return - EINVAL ; yp -> irq = yi . cfg . irq ; dev -> irq = yi . cfg . irq ; } if ( yi . cfg . mask & YAM_BITRATE ) { if ( yi . cfg . bitrate > YAM_MAXBITRATE ) return - EINVAL ; yp -> bitrate = yi . cfg . bitrate ; } if ( yi . cfg . mask & YAM_BAUDRATE ) { if ( yi . cfg . baudrate > YAM_MAXBAUDRATE ) return - EINVAL ; yp -> baudrate = yi . cfg . baudrate ; } if ( yi . cfg . mask & YAM_MODE ) { if ( yi . cfg . mode > YAM_MAXMODE ) return - EINVAL ; yp -> dupmode = yi . cfg . mode ; } if ( yi . cfg . mask & YAM_HOLDDLY ) { if ( yi . cfg . holddly > YAM_MAXHOLDDLY ) return - EINVAL ; yp -> holdd = yi . cfg . holddly ; } if ( yi . cfg . mask & YAM_TXDELAY ) { if ( yi . cfg . txdelay > YAM_MAXTXDELAY ) return - EINVAL ; yp -> txd = yi . cfg . txdelay ; } if ( yi . cfg . mask & YAM_TXTAIL ) { if ( yi . cfg . txtail > YAM_MAXTXTAIL ) return - EINVAL ; yp -> txtail = yi . cfg . txtail ; } if ( yi . cfg . mask & YAM_PERSIST ) { if ( yi . cfg . persist > YAM_MAXPERSIST ) return - EINVAL ; yp -> pers = yi . cfg . persist ; } if ( yi . cfg . mask & YAM_SLOTTIME ) { if ( yi . cfg . slottime > YAM_MAXSLOTTIME ) return - EINVAL ; yp -> slot = yi . cfg . slottime ; yp -> slotcnt = yp -> slot / 10 ; } break ; case SIOCYAMGCFG : <S2SV_StartBug> yi . cfg . mask = 0xffffffff ; <S2SV_EndBug> yi . cfg . iobase = yp -> iobase ; yi . cfg . irq = yp -> irq ; yi . cfg . bitrate = yp -> bitrate ; yi . cfg . baudrate = yp -> baudrate ; yi . cfg . mode = yp -> dupmode ; yi . cfg . txdelay = yp -> txd ; yi . cfg . holddly = yp -> holdd ; yi . cfg . txtail = yp -> txtail ; yi . cfg . persist = yp -> pers ; yi . cfg . slottime = yp -> slot ; if ( copy_to_user ( ifr -> ifr_data , & yi , sizeof ( struct yamdrv_ioctl_cfg ) ) ) return - EFAULT ; break ; default : return - EINVAL ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case SIOCYAMGCFG : memset ( & yi , 0 , sizeof ( yi ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6429\n\n```\nCWE-119 int main ( int argc , char * argv [ ] ) { int i , fd , swapped , pkthdrlen , ret , optct , backwards , caplentoobig ; struct pcap_file_header pcap_fh ; struct pcap_pkthdr pcap_ph ; struct pcap_sf_patched_pkthdr pcap_patched_ph ; char buf [ 10000 ] ; struct stat statinfo ; uint64_t pktcnt ; uint32_t readword ; int32_t last_sec , last_usec , caplen ; optct = optionProcess ( & tcpcapinfoOptions , argc , argv ) ; argc -= optct ; argv += optct ; # ifdef DEBUG if ( HAVE_OPT ( DBUG ) ) debug = OPT_VALUE_DBUG ; # endif for ( i = 0 ; i < argc ; i ++ ) { dbgx ( 1 , \"processing:<S2SV_blank><S2SV_blank>%s\\\\n\" , argv [ i ] ) ; if ( ( fd = open ( argv [ i ] , O_RDONLY ) ) < 0 ) errx ( - 1 , \"Error<S2SV_blank>opening<S2SV_blank>file<S2SV_blank>%s:<S2SV_blank>%s\" , argv [ i ] , strerror ( errno ) ) ; if ( fstat ( fd , & statinfo ) < 0 ) errx ( - 1 , \"Error<S2SV_blank>getting<S2SV_blank>file<S2SV_blank>stat<S2SV_blank>info<S2SV_blank>%s:<S2SV_blank>%s\" , argv [ i ] , strerror ( errno ) ) ; printf ( \"file<S2SV_blank>size<S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%\" PRIu64 \"<S2SV_blank>bytes\\\\n\" , ( uint64_t ) statinfo . st_size ) ; if ( ( ret = read ( fd , & buf , sizeof ( pcap_fh ) ) ) != sizeof ( pcap_fh ) ) errx ( - 1 , \"File<S2SV_blank>too<S2SV_blank>small.<S2SV_blank><S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>pcap_file_header<S2SV_blank>from<S2SV_blank>%s\" , argv [ i ] ) ; dbgx ( 3 , \"Read<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>for<S2SV_blank>file<S2SV_blank>header\" , ret ) ; swapped = 0 ; memcpy ( & pcap_fh , & buf , sizeof ( pcap_fh ) ) ; pkthdrlen = 16 ; switch ( pcap_fh . magic ) { case TCPDUMP_MAGIC : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(tcpdump)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( TCPDUMP_MAGIC ) : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(tcpdump/swapped)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; case KUZNETZOV_TCPDUMP_MAGIC : pkthdrlen = sizeof ( pcap_patched_ph ) ; printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Kuznetzov)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( KUZNETZOV_TCPDUMP_MAGIC ) : pkthdrlen = sizeof ( pcap_patched_ph ) ; printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Kuznetzov/swapped)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; case FMESQUITA_TCPDUMP_MAGIC : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Fmesquita)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( FMESQUITA_TCPDUMP_MAGIC ) : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Fmesquita)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; case NAVTEL_TCPDUMP_MAGIC : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Navtel)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( NAVTEL_TCPDUMP_MAGIC ) : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Navtel/swapped)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; case NSEC_TCPDUMP_MAGIC : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Nsec)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_not_swapped ) ; break ; case SWAPLONG ( NSEC_TCPDUMP_MAGIC ) : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(Nsec/swapped)<S2SV_blank>(%s)\\\\n\" , pcap_fh . magic , is_swapped ) ; swapped = 1 ; break ; default : printf ( \"magic<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"<S2SV_blank>(unknown)\\\\n\" , pcap_fh . magic ) ; } if ( swapped == 1 ) { pcap_fh . version_major = SWAPSHORT ( pcap_fh . version_major ) ; pcap_fh . version_minor = SWAPSHORT ( pcap_fh . version_minor ) ; pcap_fh . thiszone = SWAPLONG ( pcap_fh . thiszone ) ; pcap_fh . sigfigs = SWAPLONG ( pcap_fh . sigfigs ) ; pcap_fh . snaplen = SWAPLONG ( pcap_fh . snaplen ) ; pcap_fh . linktype = SWAPLONG ( pcap_fh . linktype ) ; } printf ( \"version<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%hu.%hu\\\\n\" , pcap_fh . version_major , pcap_fh . version_minor ) ; printf ( \"thiszone<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"\\\\n\" , pcap_fh . thiszone ) ; printf ( \"sigfigs<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"\\\\n\" , pcap_fh . sigfigs ) ; printf ( \"snaplen<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%\" PRIu32 \"\\\\n\" , pcap_fh . snaplen ) ; printf ( \"linktype<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>0x%08\" PRIx32 \"\\\\n\" , pcap_fh . linktype ) ; if ( pcap_fh . version_major != 2 && pcap_fh . version_minor != 4 ) { printf ( \"Sorry,<S2SV_blank>we<S2SV_blank>only<S2SV_blank>support<S2SV_blank>file<S2SV_blank>format<S2SV_blank>version<S2SV_blank>2.4\\\\n\" ) ; close ( fd ) ; continue ; } dbgx ( 5 , \"Packet<S2SV_blank>header<S2SV_blank>len:<S2SV_blank>%d\" , pkthdrlen ) ; if ( pkthdrlen == 24 ) { printf ( \"Packet\\\\tOrigLen\\\\t\\\\tCaplen\\\\t\\\\tTimestamp\\\\t\\\\tIndex\\\\tProto\\\\tPktType\\\\tPktCsum\\\\tNote\\\\n\" ) ; } else { printf ( \"Packet\\\\tOrigLen\\\\t\\\\tCaplen\\\\t\\\\tTimestamp\\\\tCsum\\\\tNote\\\\n\" ) ; } pktcnt = 0 ; last_sec = 0 ; last_usec = 0 ; while ( ( ret = read ( fd , & buf , pkthdrlen ) ) == pkthdrlen ) { pktcnt ++ ; backwards = 0 ; caplentoobig = 0 ; dbgx ( 3 , \"Read<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>for<S2SV_blank>packet<S2SV_blank>%\" PRIu64 \"<S2SV_blank>header\" , ret , pktcnt ) ; memset ( & pcap_ph , 0 , sizeof ( pcap_ph ) ) ; if ( pkthdrlen == sizeof ( pcap_patched_ph ) ) { memcpy ( & pcap_patched_ph , & buf , sizeof ( pcap_patched_ph ) ) ; if ( swapped == 1 ) { dbg ( 3 , \"Swapping<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>bytes...\" ) ; pcap_patched_ph . caplen = SWAPLONG ( pcap_patched_ph . caplen ) ; pcap_patched_ph . len = SWAPLONG ( pcap_patched_ph . len ) ; pcap_patched_ph . ts . tv_sec = SWAPLONG ( pcap_patched_ph . ts . tv_sec ) ; pcap_patched_ph . ts . tv_usec = SWAPLONG ( pcap_patched_ph . ts . tv_usec ) ; pcap_patched_ph . index = SWAPLONG ( pcap_patched_ph . index ) ; pcap_patched_ph . protocol = SWAPSHORT ( pcap_patched_ph . protocol ) ; } printf ( \"%\" PRIu64 \"\\\\t%4\" PRIu32 \"\\\\t\\\\t%4\" PRIu32 \"\\\\t\\\\t%\" PRIx32 \".%\" PRIx32 \"\\\\t\\\\t%4\" PRIu32 \"\\\\t%4hu\\\\t%4hhu\" , pktcnt , pcap_patched_ph . len , pcap_patched_ph . caplen , pcap_patched_ph . ts . tv_sec , pcap_patched_ph . ts . tv_usec , pcap_patched_ph . index , pcap_patched_ph . protocol , pcap_patched_ph . pkt_type ) ; if ( pcap_fh . snaplen < pcap_patched_ph . caplen ) { caplentoobig = 1 ; } caplen = pcap_patched_ph . caplen ; } else { memcpy ( & readword , buf , 4 ) ; pcap_ph . ts . tv_sec = readword ; memcpy ( & readword , & buf [ 4 ] , 4 ) ; pcap_ph . ts . tv_usec = readword ; memcpy ( & pcap_ph . caplen , & buf [ 8 ] , 4 ) ; memcpy ( & pcap_ph . len , & buf [ 12 ] , 4 ) ; if ( swapped == 1 ) { dbg ( 3 , \"Swapping<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>bytes...\" ) ; pcap_ph . caplen = SWAPLONG ( pcap_ph . caplen ) ; pcap_ph . len = SWAPLONG ( pcap_ph . len ) ; pcap_ph . ts . tv_sec = SWAPLONG ( pcap_ph . ts . tv_sec ) ; pcap_ph . ts . tv_usec = SWAPLONG ( pcap_ph . ts . tv_usec ) ; } printf ( \"%\" PRIu64 \"\\\\t%4\" PRIu32 \"\\\\t\\\\t%4\" PRIu32 \"\\\\t\\\\t%\" PRIx32 \".%\" PRIx32 , pktcnt , pcap_ph . len , pcap_ph . caplen , ( unsigned int ) pcap_ph . ts . tv_sec , ( unsigned int ) pcap_ph . ts . tv_usec ) ; if ( pcap_fh . snaplen < pcap_ph . caplen ) { caplentoobig = 1 ; } caplen = pcap_ph . caplen ; } <S2SV_StartBug> if ( last_sec > 0 && last_usec > 0 ) { <S2SV_EndBug> if ( ( pcap_ph . ts . tv_sec == last_sec ) ? ( pcap_ph . ts . tv_usec < last_usec ) : ( pcap_ph . ts . tv_sec < last_sec ) ) { backwards = 1 ; } } if ( pkthdrlen == sizeof ( pcap_patched_ph ) ) { last_sec = pcap_patched_ph . ts . tv_sec ; last_usec = pcap_patched_ph . ts . tv_usec ; } else { last_sec = pcap_ph . ts . tv_sec ; last_usec = pcap_ph . ts . tv_usec ; } if ( ( ret = read ( fd , & buf , caplen ) ) != caplen ) { if ( ret < 0 ) { printf ( \"Error<S2SV_blank>reading<S2SV_blank>file:<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , argv [ i ] , strerror ( errno ) ) ; } else { printf ( \"File<S2SV_blank>truncated!<S2SV_blank><S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>jump<S2SV_blank>to<S2SV_blank>next<S2SV_blank>packet.\\\\n\" ) ; } close ( fd ) ; <S2SV_StartBug> continue ; <S2SV_EndBug> } printf ( \"\\\\t%x\\\\t\" , do_checksum_math ( ( u_int16_t * ) buf , caplen ) ) ; if ( ! backwards && ! caplentoobig ) { printf ( \"OK\\\\n\" ) ; } else if ( backwards && ! caplentoobig ) { printf ( \"BAD_TS\\\\n\" ) ; } else if ( caplentoobig && ! backwards ) { printf ( \"TOOBIG\\\\n\" ) ; } else if ( backwards && caplentoobig ) { printf ( \"BAD_TS|TOOBIG\" ) ; } } } exit ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( caplentoobig ) { printf ( \"\\\\n\\\\nCapture<S2SV_blank>file<S2SV_blank>appears<S2SV_blank>to<S2SV_blank>be<S2SV_blank>damaged<S2SV_blank>or<S2SV_blank>corrupt.\\\\n\" \"Contains<S2SV_blank>packet<S2SV_blank>of<S2SV_blank>size<S2SV_blank>%u,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>snap<S2SV_blank>length<S2SV_blank>%u\\\\n\" , caplen , pcap_fh . snaplen ) ; close ( fd ) ; break ; } if ( <S2SV_ModStart> fd ) ; break <S2SV_ModEnd> ; } printf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 static int __f2fs_set_acl ( struct inode * inode , int type , struct posix_acl * acl , struct page * ipage ) { int name_index ; void * value = NULL ; size_t size = 0 ; int error ; switch ( type ) { case ACL_TYPE_ACCESS : name_index = F2FS_XATTR_INDEX_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; <S2SV_StartBug> set_acl_inode ( inode , inode -> i_mode ) ; <S2SV_EndBug> if ( error == 0 ) acl = NULL ; } break ; case ACL_TYPE_DEFAULT : name_index = F2FS_XATTR_INDEX_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = f2fs_acl_to_disk ( acl , & size ) ; if ( IS_ERR ( value ) ) { clear_inode_flag ( inode , FI_ACL_MODE ) ; return ( int ) PTR_ERR ( value ) ; } } error = f2fs_setxattr ( inode , name_index , \"\" , value , size , ipage , 0 ) ; kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; clear_inode_flag ( inode , FI_ACL_MODE ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( error <S2SV_ModEnd> ) return error <S2SV_ModStart> -> i_mode ) <S2SV_ModEnd> ; } break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-23931\n\n```\nCWE-125 GF_Err abst_box_read ( GF_Box * s , GF_BitStream * bs ) { GF_AdobeBootstrapInfoBox * ptr = ( GF_AdobeBootstrapInfoBox * ) s ; int i ; u32 tmp_strsize ; char * tmp_str ; GF_Err e ; ISOM_DECREASE_SIZE ( ptr , 25 ) ptr -> bootstrapinfo_version = gf_bs_read_u32 ( bs ) ; ptr -> profile = gf_bs_read_int ( bs , 2 ) ; ptr -> live = gf_bs_read_int ( bs , 1 ) ; ptr -> update = gf_bs_read_int ( bs , 1 ) ; ptr -> reserved = gf_bs_read_int ( bs , 4 ) ; ptr -> time_scale = gf_bs_read_u32 ( bs ) ; ptr -> current_media_time = gf_bs_read_u64 ( bs ) ; ptr -> smpte_time_code_offset = gf_bs_read_u64 ( bs ) ; i = 0 ; if ( ptr -> size < 8 ) return GF_ISOM_INVALID_FILE ; tmp_strsize = ( u32 ) ptr -> size - 8 ; tmp_str = gf_malloc ( sizeof ( char ) * tmp_strsize ) ; if ( ! tmp_str ) return GF_OUT_OF_MEM ; memset ( tmp_str , 0 , sizeof ( char ) * tmp_strsize ) ; while ( tmp_strsize ) { <S2SV_StartBug> tmp_str [ i ] = gf_bs_read_u8 ( bs ) ; <S2SV_EndBug> tmp_strsize -- ; if ( ! tmp_str [ i ] ) break ; i ++ ; } if ( i ) { ptr -> movie_identifier = gf_strdup ( tmp_str ) ; } <S2SV_StartBug> ptr -> server_entry_count = gf_bs_read_u8 ( bs ) ; <S2SV_EndBug> for ( i = 0 ; i < ptr -> server_entry_count ; i ++ ) { int j = 0 ; <S2SV_StartBug> tmp_strsize = ( u32 ) ptr -> size - 8 ; <S2SV_EndBug> while ( tmp_strsize ) { <S2SV_StartBug> tmp_str [ j ] = gf_bs_read_u8 ( bs ) ; <S2SV_EndBug> tmp_strsize -- ; if ( ! tmp_str [ j ] ) break ; j ++ ; } if ( j ) { gf_list_insert ( ptr -> server_entry_table , gf_strdup ( tmp_str ) , i ) ; } } <S2SV_StartBug> ptr -> quality_entry_count = gf_bs_read_u8 ( bs ) ; <S2SV_EndBug> for ( i = 0 ; i < ptr -> quality_entry_count ; i ++ ) { int j = 0 ; <S2SV_StartBug> tmp_strsize = ( u32 ) ptr -> size - 8 ; <S2SV_EndBug> while ( tmp_strsize ) { <S2SV_StartBug> tmp_str [ j ] = gf_bs_read_u8 ( bs ) ; <S2SV_EndBug> tmp_strsize -- ; if ( ! tmp_str [ j ] ) break ; j ++ ; } if ( j ) { gf_list_insert ( ptr -> quality_entry_table , gf_strdup ( tmp_str ) , i ) ; } } i = 0 ; <S2SV_StartBug> tmp_strsize = ( u32 ) ptr -> size - 8 ; <S2SV_EndBug> while ( tmp_strsize ) { <S2SV_StartBug> tmp_str [ i ] = gf_bs_read_u8 ( bs ) ; <S2SV_EndBug> tmp_strsize -- ; if ( ! tmp_str [ i ] ) break ; i ++ ; } if ( i ) { ptr -> drm_data = gf_strdup ( tmp_str ) ; } i = 0 ; <S2SV_StartBug> tmp_strsize = ( u32 ) ptr -> size - 8 ; <S2SV_EndBug> while ( tmp_strsize ) { <S2SV_StartBug> tmp_str [ i ] = gf_bs_read_u8 ( bs ) ; <S2SV_EndBug> tmp_strsize -- ; if ( ! tmp_str [ i ] ) break ; i ++ ; } if ( i ) { ptr -> meta_data = gf_strdup ( tmp_str ) ; <S2SV_StartBug> } <S2SV_EndBug> ptr -> segment_run_table_count = gf_bs_read_u8 ( bs ) ; for ( i = 0 ; i < ptr -> segment_run_table_count ; i ++ ) { GF_AdobeSegmentRunTableBox * asrt = NULL ; e = gf_isom_box_parse ( ( GF_Box * * ) & asrt , bs ) ; if ( e ) { if ( asrt ) gf_isom_box_del ( ( GF_Box * ) asrt ) ; gf_free ( tmp_str ) ; return e ; } gf_list_add ( ptr -> segment_run_table_entries , asrt ) ; } <S2SV_StartBug> ptr -> fragment_run_table_count = gf_bs_read_u8 ( bs ) ; <S2SV_EndBug> for ( i = 0 ; i < ptr -> fragment_run_table_count ; i ++ ) { GF_AdobeFragmentRunTableBox * afrt = NULL ; e = gf_isom_box_parse ( ( GF_Box * * ) & afrt , bs ) ; if ( e ) { if ( afrt ) gf_isom_box_del ( ( GF_Box * ) afrt ) ; gf_free ( tmp_str ) ; return e ; } gf_list_add ( ptr -> fragment_run_table_entries , afrt ) ; } gf_free ( tmp_str ) ; return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp_strsize ) { ISOM_DECREASE_SIZE ( ptr , 1 ) <S2SV_ModStart> ) ; } ISOM_DECREASE_SIZE ( ptr , 1 ) <S2SV_ModStart> ptr -> size <S2SV_ModEnd> ; while ( <S2SV_ModStart> tmp_strsize ) { ISOM_DECREASE_SIZE ( ptr , 1 ) <S2SV_ModStart> ; } } ISOM_DECREASE_SIZE ( ptr , 1 ) <S2SV_ModStart> ptr -> size <S2SV_ModEnd> ; while ( <S2SV_ModStart> tmp_strsize ) { ISOM_DECREASE_SIZE ( ptr , 1 ) <S2SV_ModStart> ptr -> size <S2SV_ModEnd> ; while ( <S2SV_ModStart> tmp_strsize ) { ISOM_DECREASE_SIZE ( ptr , 1 ) <S2SV_ModStart> ptr -> size <S2SV_ModEnd> ; while ( <S2SV_ModStart> tmp_strsize ) { ISOM_DECREASE_SIZE ( ptr , 1 ) <S2SV_ModStart> ) ; } ISOM_DECREASE_SIZE ( ptr , 1 ) <S2SV_ModStart> ) ; } ISOM_DECREASE_SIZE ( ptr , 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-824(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11498\n\n```\nCWE-824 int ParseDsdiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t infilesize , total_samples ; DFFFileHeader dff_file_header ; DFFChunkHeader dff_chunk_header ; uint32_t bcount ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & dff_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & dff_file_header ) + 4 , sizeof ( DFFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( DFFFileHeader ) - 4 ) || strncmp ( dff_file_header . formType , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_file_header , sizeof ( DFFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackBigEndianToNative ( & dff_file_header , DFFFileHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && dff_file_header . ckDataSize && dff_file_header . ckDataSize + 1 && dff_file_header . ckDataSize + 12 != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file<S2SV_blank>(by<S2SV_blank>total<S2SV_blank>size)!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"file<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_file_header . ckDataSize ) ; # endif while ( 1 ) { if ( ! DoReadFile ( infile , & dff_chunk_header , sizeof ( DFFChunkHeader ) , & bcount ) || bcount != sizeof ( DFFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_chunk_header , sizeof ( DFFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( debug_logging_mode ) error_line ( \"chunk<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_chunk_header . ckDataSize ) ; if ( ! strncmp ( dff_chunk_header . ckID , \"FVER\" , 4 ) ) { uint32_t version ; if ( dff_chunk_header . ckDataSize != sizeof ( version ) || ! DoReadFile ( infile , & version , sizeof ( version ) , & bcount ) || bcount != sizeof ( version ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & version , sizeof ( version ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & version , \"L\" ) ; if ( debug_logging_mode ) error_line ( \"dsdiff<S2SV_blank>file<S2SV_blank>version<S2SV_blank>=<S2SV_blank>0x%08x\" , version ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"PROP\" , 4 ) ) { char * prop_chunk ; if ( dff_chunk_header . ckDataSize < 4 || dff_chunk_header . ckDataSize > 1024 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>total\" , ( int ) dff_chunk_header . ckDataSize ) ; prop_chunk = malloc ( ( size_t ) dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize , & bcount ) || bcount != dff_chunk_header . ckDataSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } if ( ! strncmp ( prop_chunk , \"SND<S2SV_blank>\" , 4 ) ) { char * cptr = prop_chunk + 4 , * eptr = prop_chunk + dff_chunk_header . ckDataSize ; uint16_t numChannels = 0 , chansSpecified , chanMask = 0 ; <S2SV_StartBug> uint32_t sampleRate ; <S2SV_EndBug> while ( eptr - cptr >= sizeof ( dff_chunk_header ) ) { memcpy ( & dff_chunk_header , cptr , sizeof ( dff_chunk_header ) ) ; cptr += sizeof ( dff_chunk_header ) ; WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( dff_chunk_header . ckDataSize > 0 && dff_chunk_header . ckDataSize <= eptr - cptr ) { if ( ! strncmp ( dff_chunk_header . ckID , \"FS<S2SV_blank><S2SV_blank>\" , 4 ) && dff_chunk_header . ckDataSize == 4 ) { memcpy ( & sampleRate , cptr , sizeof ( sampleRate ) ) ; WavpackBigEndianToNative ( & sampleRate , \"L\" ) ; cptr += dff_chunk_header . ckDataSize ; if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>sample<S2SV_blank>rate<S2SV_blank>of<S2SV_blank>%u<S2SV_blank>Hz\" , sampleRate ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CHNL\" , 4 ) && dff_chunk_header . ckDataSize >= 2 ) { memcpy ( & numChannels , cptr , sizeof ( numChannels ) ) ; WavpackBigEndianToNative ( & numChannels , \"S\" ) ; cptr += sizeof ( numChannels ) ; chansSpecified = ( int ) ( dff_chunk_header . ckDataSize - sizeof ( numChannels ) ) / 4 ; if ( numChannels < chansSpecified || numChannels < 1 || numChannels > 256 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } while ( chansSpecified -- ) { if ( ! strncmp ( cptr , \"SLFT\" , 4 ) || ! strncmp ( cptr , \"MLFT\" , 4 ) ) chanMask |= 0x1 ; else if ( ! strncmp ( cptr , \"SRGT\" , 4 ) || ! strncmp ( cptr , \"MRGT\" , 4 ) ) chanMask |= 0x2 ; else if ( ! strncmp ( cptr , \"LS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x10 ; else if ( ! strncmp ( cptr , \"RS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x20 ; else if ( ! strncmp ( cptr , \"C<S2SV_blank><S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x4 ; else if ( ! strncmp ( cptr , \"LFE<S2SV_blank>\" , 4 ) ) chanMask |= 0x8 ; else if ( debug_logging_mode ) error_line ( \"undefined<S2SV_blank>channel<S2SV_blank>ID<S2SV_blank>%c%c%c%c\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; cptr += 4 ; } if ( debug_logging_mode ) error_line ( \"%d<S2SV_blank>channels,<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>0x%08x\" , numChannels , chanMask ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CMPR\" , 4 ) && dff_chunk_header . ckDataSize >= 4 ) { if ( strncmp ( cptr , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"DSDIFF<S2SV_blank>files<S2SV_blank>must<S2SV_blank>be<S2SV_blank>uncompressed,<S2SV_blank>not<S2SV_blank>\\\\\"%c%c%c%c\\\\\"!\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } cptr += dff_chunk_header . ckDataSize ; } else { if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP/SND<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; cptr += dff_chunk_header . ckDataSize ; } } else { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } } if ( chanMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>DSDIFF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( chanMask ) config -> channel_mask = chanMask ; config -> bits_per_sample = 8 ; config -> bytes_per_sample = 1 ; config -> num_channels = numChannels ; config -> sample_rate = sampleRate / 8 ; config -> qmode |= QMODE_DSD_MSB_FIRST ; } else if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>unknown<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , prop_chunk [ 0 ] , prop_chunk [ 1 ] , prop_chunk [ 2 ] , prop_chunk [ 3 ] , dff_chunk_header . ckDataSize ) ; free ( prop_chunk ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"DSD<S2SV_blank>\" , 4 ) ) { <S2SV_StartBug> if ( ! config -> num_channels ) { <S2SV_EndBug> error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } total_samples = dff_chunk_header . ckDataSize / config -> num_channels ; break ; } else { int bytes_to_copy = ( int ) ( ( ( dff_chunk_header . ckDataSize ) + 1 ) & ~ ( int64_t ) 1 ) ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( debug_logging_mode ) error_line ( \"setting<S2SV_blank>configuration<S2SV_blank>with<S2SV_blank>%lld<S2SV_blank>samples\" , total_samples ) ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint32_t sampleRate = 0 <S2SV_ModStart> config -> num_channels || ! config -> sample_rate\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_write_message_fields_buffer ( wStream * s , NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( fields -> Len > 0 ) { Stream_SetPosition ( s , fields -> BufferOffset ) ; Stream_Write ( s , fields -> Buffer , fields -> Len ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void cyclic_background_refresh ( VP8_COMP * cpi , int Q , int lf_adjustment ) { unsigned char * seg_map = cpi -> segmentation_map ; signed char feature_data [ MB_LVL_MAX ] [ MAX_MB_SEGMENTS ] ; int i ; int block_count = cpi -> cyclic_refresh_mode_max_mbs_perframe ; int mbs_in_frame = cpi -> common . mb_rows * cpi -> common . mb_cols ; cpi -> cyclic_refresh_q = Q / 2 ; <S2SV_StartBug> vpx_memset ( cpi -> segmentation_map , 0 , mbs_in_frame ) ; <S2SV_EndBug> <S2SV_StartBug> if ( cpi -> common . frame_type != KEY_FRAME ) <S2SV_EndBug> { i = cpi -> cyclic_refresh_mode_index ; assert ( i < mbs_in_frame ) ; do { if ( cpi -> cyclic_refresh_map [ i ] == 0 ) { seg_map [ i ] = 1 ; block_count -- ; } else if ( cpi -> cyclic_refresh_map [ i ] < 0 ) cpi -> cyclic_refresh_map [ i ] ++ ; i ++ ; if ( i == mbs_in_frame ) i = 0 ; } while ( block_count && i != cpi -> cyclic_refresh_mode_index ) ; <S2SV_StartBug> cpi -> cyclic_refresh_mode_index = i ; <S2SV_EndBug> } cpi -> mb . e_mbd . update_mb_segmentation_map = 1 ; cpi -> mb . e_mbd . update_mb_segmentation_data = 1 ; enable_segmentation ( cpi ) ; feature_data [ MB_LVL_ALT_Q ] [ 0 ] = 0 ; feature_data [ MB_LVL_ALT_Q ] [ 1 ] = ( cpi -> cyclic_refresh_q - Q ) ; feature_data [ MB_LVL_ALT_Q ] [ 2 ] = 0 ; feature_data [ MB_LVL_ALT_Q ] [ 3 ] = 0 ; feature_data [ MB_LVL_ALT_LF ] [ 0 ] = 0 ; feature_data [ MB_LVL_ALT_LF ] [ 1 ] = lf_adjustment ; feature_data [ MB_LVL_ALT_LF ] [ 2 ] = 0 ; feature_data [ MB_LVL_ALT_LF ] [ 3 ] = 0 ; set_segment_data ( cpi , & feature_data [ 0 ] [ 0 ] , SEGMENT_DELTADATA ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> / 2 ; if ( cpi -> oxcf . screen_content_mode ) { int qp_thresh = ( cpi -> oxcf . screen_content_mode == 2 ) ? 80 : 100 ; if ( Q >= qp_thresh ) { cpi -> cyclic_refresh_mode_max_mbs_perframe = ( cpi -> common . mb_rows * cpi -> common . mb_cols ) / 10 ; } else if ( cpi -> frames_since_key > 250 && Q < 20 && cpi -> mb . skip_true_count > ( int ) ( 0.95 * mbs_in_frame ) ) { cpi -> cyclic_refresh_mode_max_mbs_perframe = 0 ; } else { cpi -> cyclic_refresh_mode_max_mbs_perframe = ( cpi -> common . mb_rows * cpi -> common . mb_cols ) / 20 ; } block_count = cpi -> cyclic_refresh_mode_max_mbs_perframe ; } memset <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> frame_type != KEY_FRAME && block_count > 0 <S2SV_ModStart> = i ; # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity > 0 ) { if ( cpi -> denoiser . denoiser_mode == kDenoiserOnYUVAggressive && Q < ( int ) cpi -> denoiser . denoise_pars . qp_thresh && ( cpi -> frames_since_key > 2 * cpi -> denoiser . denoise_pars . consec_zerolast ) ) { cpi -> cyclic_refresh_q = Q ; lf_adjustment = - 40 ; for ( i = 0 ; i < mbs_in_frame ; ++ i ) { seg_map [ i ] = ( cpi -> consec_zero_last [ i ] > cpi -> denoiser . denoise_pars . consec_zerolast ) ? 1 : 0 ; } } } # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9934\n\n```\nCWE-476 void pdo_stmt_init ( TSRMLS_D ) { zend_class_entry ce ; INIT_CLASS_ENTRY ( ce , \"PDOStatement\" , pdo_dbstmt_functions ) ; pdo_dbstmt_ce = zend_register_internal_class ( & ce TSRMLS_CC ) ; pdo_dbstmt_ce -> get_iterator = pdo_stmt_iter_get ; pdo_dbstmt_ce -> create_object = pdo_dbstmt_new ; zend_class_implements ( pdo_dbstmt_ce TSRMLS_CC , 1 , zend_ce_traversable ) ; zend_declare_property_null ( pdo_dbstmt_ce , \"queryString\" , sizeof ( \"queryString\" ) - 1 , ZEND_ACC_PUBLIC TSRMLS_CC ) ; memcpy ( & pdo_dbstmt_object_handlers , & std_object_handlers , sizeof ( zend_object_handlers ) ) ; pdo_dbstmt_object_handlers . write_property = dbstmt_prop_write ; pdo_dbstmt_object_handlers . unset_property = dbstmt_prop_delete ; pdo_dbstmt_object_handlers . get_method = dbstmt_method_get ; pdo_dbstmt_object_handlers . compare_objects = dbstmt_compare ; pdo_dbstmt_object_handlers . clone_obj = dbstmt_clone_obj ; INIT_CLASS_ENTRY ( ce , \"PDORow\" , pdo_row_functions ) ; pdo_row_ce = zend_register_internal_class ( & ce TSRMLS_CC ) ; pdo_row_ce -> ce_flags |= ZEND_ACC_FINAL_CLASS ; pdo_row_ce -> create_object = pdo_row_new ; pdo_row_ce -> serialize = pdo_row_serialize ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = pdo_row_serialize ; pdo_row_ce -> unserialize = zend_class_unserialize_deny ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15140\n\n```\nCWE-416 static Image * ReadMATImageV4 ( const ImageInfo * image_info , Image * image , ExceptionInfo * exception ) { typedef struct { unsigned char Type [ 4 ] ; unsigned int nRows ; unsigned int nCols ; unsigned int imagf ; unsigned int nameLen ; } MAT4_HDR ; long ldblk ; EndianType endian ; Image * rotated_image ; MagickBooleanType status ; MAT4_HDR HDR ; QuantumInfo * quantum_info ; QuantumFormatType format_type ; register ssize_t i ; ssize_t count , y ; unsigned char * pixels ; unsigned int depth ; quantum_info = ( QuantumInfo * ) NULL ; ( void ) SeekBlob ( image , 0 , SEEK_SET ) ; status = MagickTrue ; while ( EOFBlob ( image ) == MagickFalse ) { ldblk = ReadBlobLSBLong ( image ) ; <S2SV_StartBug> if ( ( ldblk > 9999 ) || ( ldblk < 0 ) ) <S2SV_EndBug> break ; HDR . Type [ 3 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 2 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 1 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 0 ] = ldblk ; if ( HDR . Type [ 3 ] != 0 ) break ; if ( HDR . Type [ 2 ] != 0 ) break ; if ( HDR . Type [ 0 ] == 0 ) { HDR . nRows = ReadBlobLSBLong ( image ) ; HDR . nCols = ReadBlobLSBLong ( image ) ; HDR . imagf = ReadBlobLSBLong ( image ) ; HDR . nameLen = ReadBlobLSBLong ( image ) ; endian = LSBEndian ; } else { HDR . nRows = ReadBlobMSBLong ( image ) ; HDR . nCols = ReadBlobMSBLong ( image ) ; HDR . imagf = ReadBlobMSBLong ( image ) ; HDR . nameLen = ReadBlobMSBLong ( image ) ; endian = MSBEndian ; } if ( ( HDR . imagf != 0 ) && ( HDR . imagf != 1 ) ) break ; if ( HDR . nameLen > 0xFFFF ) return ( DestroyImageList ( image ) ) ; for ( i = 0 ; i < ( ssize_t ) HDR . nameLen ; i ++ ) { int byte ; byte = ReadBlobByte ( image ) ; if ( byte == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } image -> columns = ( size_t ) HDR . nRows ; image -> rows = ( size_t ) HDR . nCols ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) return ( DestroyImageList ( image ) ) ; if ( image_info -> ping != MagickFalse ) { Swap ( image -> columns , image -> rows ) ; if ( HDR . imagf == 1 ) ldblk *= 2 ; SeekBlob ( image , HDR . nCols * ldblk , SEEK_CUR ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) return ( image -> previous == ( Image * ) NULL ? DestroyImageList ( image ) : image ) ; goto skip_reading_current ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; ( void ) SetImageBackgroundColor ( image , exception ) ; ( void ) SetImageColorspace ( image , GRAYColorspace , exception ) ; quantum_info = AcquireQuantumInfo ( image_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) return ( DestroyImageList ( image ) ) ; switch ( HDR . Type [ 1 ] ) { case 0 : format_type = FloatingPointQuantumFormat ; depth = 64 ; break ; case 1 : format_type = FloatingPointQuantumFormat ; depth = 32 ; break ; case 2 : format_type = UnsignedQuantumFormat ; depth = 16 ; break ; case 3 : format_type = SignedQuantumFormat ; depth = 16 ; break ; case 4 : format_type = UnsignedQuantumFormat ; depth = 8 ; break ; default : format_type = UnsignedQuantumFormat ; depth = 8 ; break ; } image -> depth = depth ; if ( HDR . Type [ 0 ] != 0 ) SetQuantumEndian ( image , quantum_info , MSBEndian ) ; status = SetQuantumFormat ( image , quantum_info , format_type ) ; status = SetQuantumDepth ( image , quantum_info , depth ) ; status = SetQuantumEndian ( image , quantum_info , endian ) ; SetQuantumScale ( quantum_info , 1.0 ) ; pixels = ( unsigned char * ) GetQuantumPixels ( quantum_info ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register Quantum * magick_restrict q ; count = ReadBlob ( image , depth / 8 * image -> columns , ( char * ) pixels ) ; if ( count == - 1 ) break ; q = QueueAuthenticPixels ( image , 0 , image -> rows - y - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; ( void ) ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , GrayQuantum , pixels , exception ) ; if ( ( HDR . Type [ 1 ] == 2 ) || ( HDR . Type [ 1 ] == 3 ) ) FixSignedValues ( image , q , ( int ) image -> columns ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( HDR . imagf == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { count = ReadBlob ( image , depth / 8 * image -> columns , ( char * ) pixels ) ; if ( count == - 1 ) break ; if ( HDR . Type [ 1 ] == 0 ) InsertComplexDoubleRow ( image , ( double * ) pixels , y , 0 , 0 , exception ) ; else InsertComplexFloatRow ( image , ( float * ) pixels , y , 0 , 0 , exception ) ; } if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; rotated_image -> colors = image -> colors ; DestroyBlob ( rotated_image ) ; rotated_image -> blob = ReferenceBlob ( image -> blob ) ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; skip_reading_current : AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; break ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( EOFBlob ( image ) ) break ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27194\n\n```\nCWE-119 static void scalar32_min_max_or ( struct bpf_reg_state * dst_reg , struct bpf_reg_state * src_reg ) { bool src_known = tnum_subreg_is_const ( src_reg -> var_off ) ; bool dst_known = tnum_subreg_is_const ( dst_reg -> var_off ) ; struct tnum var32_off = tnum_subreg ( dst_reg -> var_off ) ; <S2SV_StartBug> s32 smin_val = src_reg -> smin_value ; <S2SV_EndBug> <S2SV_StartBug> u32 umin_val = src_reg -> umin_value ; <S2SV_EndBug> if ( src_known && dst_known ) return ; dst_reg -> u32_min_value = max ( dst_reg -> u32_min_value , umin_val ) ; dst_reg -> u32_max_value = var32_off . value | var32_off . mask ; if ( dst_reg -> s32_min_value < 0 || smin_val < 0 ) { dst_reg -> s32_min_value = S32_MIN ; dst_reg -> s32_max_value = S32_MAX ; } else { <S2SV_StartBug> dst_reg -> s32_min_value = dst_reg -> umin_value ; <S2SV_EndBug> <S2SV_StartBug> dst_reg -> s32_max_value = dst_reg -> umax_value ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = src_reg -> s32_min_value <S2SV_ModEnd> ; u32 umin_val <S2SV_ModStart> = src_reg -> u32_min_value <S2SV_ModEnd> ; if ( <S2SV_ModStart> = dst_reg -> u32_min_value <S2SV_ModEnd> ; dst_reg -> <S2SV_ModStart> = dst_reg -> u32_max_value <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5224\n\n```\nCWE-264 static int save_new_data ( struct chfn_control * ctl ) { char * gecos ; int len ; len = xasprintf ( & gecos , \"%s,%s,%s,%s,%s\" , ctl -> newf . full_name , ctl -> newf . office , ctl -> newf . office_phone , ctl -> newf . home_phone , ctl -> newf . other ) ; if ( ! ctl -> newf . other ) { while ( len > 0 && gecos [ len - 1 ] == ',' ) len -- ; gecos [ len ] = 0 ; } # ifdef HAVE_LIBUSER if ( set_value_libuser ( \"chfn\" , ctl -> username , ctl -> pw -> pw_uid , LU_GECOS , gecos ) < 0 ) { # else ctl -> pw -> pw_gecos = gecos ; <S2SV_StartBug> if ( setpwnam ( ctl -> pw ) < 0 ) { <S2SV_EndBug> warn ( \"setpwnam<S2SV_blank>failed\" ) ; # endif printf ( _ ( \"Finger<S2SV_blank>information<S2SV_blank>*NOT*<S2SV_blank>changed.<S2SV_blank><S2SV_blank>Try<S2SV_blank>again<S2SV_blank>later.\\\\n\" ) ) ; return - 1 ; } free ( gecos ) ; printf ( _ ( \"Finger<S2SV_blank>information<S2SV_blank>changed.\\\\n\" ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctl -> pw , \".chfn\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16910\n\n```\nCWE-125 void CLASS xtrans_interpolate ( int passes ) { int c , d , f , g , h , i , v , ng , row , col , top , left , mrow , mcol ; # ifdef LIBRAW_LIBRARY_BUILD int cstat [ 4 ] = { 0 , 0 , 0 , 0 } ; # endif int val , ndir , pass , hm [ 8 ] , avg [ 4 ] , color [ 3 ] [ 8 ] ; static const short orth [ 12 ] = { 1 , 0 , 0 , 1 , - 1 , 0 , 0 , - 1 , 1 , 0 , 0 , 1 } , patt [ 2 ] [ 16 ] = { { 0 , 1 , 0 , - 1 , 2 , 0 , - 1 , 0 , 1 , 1 , 1 , - 1 , 0 , 0 , 0 , 0 } , { 0 , 1 , 0 , - 2 , 1 , 0 , - 2 , 0 , 1 , 1 , - 2 , - 2 , 1 , - 1 , - 1 , 1 } } , dir [ 4 ] = { 1 , TS , TS + 1 , TS - 1 } ; short allhex [ 3 ] [ 3 ] [ 2 ] [ 8 ] , * hex ; ushort min , max , sgrow , sgcol ; ushort ( * rgb ) [ TS ] [ TS ] [ 3 ] , ( * rix ) [ 3 ] , ( * pix ) [ 4 ] ; short ( * lab ) [ TS ] [ 3 ] , ( * lix ) [ 3 ] ; float ( * drv ) [ TS ] [ TS ] , diff [ 6 ] , tr ; char ( * homo ) [ TS ] [ TS ] , * buffer ; # ifdef DCRAW_VERBOSE if ( verbose ) fprintf ( stderr , _ ( \"%d-pass<S2SV_blank>X-Trans<S2SV_blank>interpolation...\\\\n\" ) , passes ) ; # endif # ifdef LIBRAW_LIBRARY_BUILD <S2SV_StartBug> for ( row = 0 ; row < 6 ; row ++ ) <S2SV_EndBug> for ( col = 0 ; col < 6 ; col ++ ) cstat [ fcol ( row , col ) ] ++ ; if ( cstat [ 0 ] < 6 || cstat [ 0 ] > 10 || cstat [ 1 ] < 16 || cstat [ 1 ] > 24 || cstat [ 2 ] < 6 || cstat [ 2 ] > 10 || cstat [ 3 ] ) throw LIBRAW_EXCEPTION_IO_CORRUPT ; <S2SV_StartBug> # endif <S2SV_EndBug> cielab ( 0 , 0 ) ; ndir = 4 << ( passes > 1 ) ; buffer = ( char * ) malloc ( TS * TS * ( ndir * 11 + 6 ) ) ; merror ( buffer , \"xtrans_interpolate()\" ) ; rgb = ( ushort ( * ) [ TS ] [ TS ] [ 3 ] ) buffer ; lab = ( short ( * ) [ TS ] [ 3 ] ) ( buffer + TS * TS * ( ndir * 6 ) ) ; drv = ( float ( * ) [ TS ] [ TS ] ) ( buffer + TS * TS * ( ndir * 6 + 6 ) ) ; <S2SV_StartBug> homo = ( char ( * ) [ TS ] [ TS ] ) ( buffer + TS * TS * ( ndir * 10 + 6 ) ) ; <S2SV_EndBug> for ( row = 0 ; row < 3 ; row ++ ) for ( col = 0 ; col < 3 ; col ++ ) for ( ng = d = 0 ; d < 10 ; d += 2 ) { g = fcol ( row , col ) == 1 ; if ( fcol ( row + orth [ d ] , col + orth [ d + 2 ] ) == 1 ) ng = 0 ; else ng ++ ; if ( ng == 4 ) { sgrow = row ; sgcol = col ; } if ( ng == g + 1 ) FORC ( 8 ) { v = orth [ d ] * patt [ g ] [ c * 2 ] + orth [ d + 1 ] * patt [ g ] [ c * 2 + 1 ] ; h = orth [ d + 2 ] * patt [ g ] [ c * 2 ] + orth [ d + 3 ] * patt [ g ] [ c * 2 + 1 ] ; <S2SV_StartBug> allhex [ row ] [ col ] [ 0 ] [ c ^ ( g * 2 & d ) ] = h + v * width ; <S2SV_EndBug> allhex [ row ] [ col ] [ 1 ] [ c ^ ( g * 2 & d ) ] = h + v * TS ; } <S2SV_StartBug> } <S2SV_EndBug> for ( row = 2 ; row < height - 2 ; row ++ ) for ( min = ~ ( max = 0 ) , col = 2 ; col < width - 2 ; col ++ ) { if ( fcol ( row , col ) == 1 && ( min = ~ ( max = 0 ) ) ) continue ; pix = image + row * width + col ; hex = allhex [ row % 3 ] [ col % 3 ] [ 0 ] ; if ( ! max ) FORC ( 6 ) { val = pix [ hex [ c ] ] [ 1 ] ; if ( min > val ) min = val ; if ( max < val ) max = val ; } pix [ 0 ] [ 1 ] = min ; pix [ 0 ] [ 3 ] = max ; switch ( ( row - sgrow ) % 3 ) { case 1 : if ( row < height - 3 ) { row ++ ; col -- ; } break ; case 2 : if ( ( min = ~ ( max = 0 ) ) && ( col += 2 ) < width - 3 && row > 2 ) <S2SV_StartBug> row -- ; <S2SV_EndBug> } } for ( top = 3 ; top < height - 19 ; top += TS - 16 ) for ( left = 3 ; left < width - 19 ; left += TS - 16 ) { mrow = MIN ( top + TS , height - 3 ) ; mcol = MIN ( left + TS , width - 3 ) ; for ( row = top ; row < mrow ; row ++ ) for ( col = left ; col < mcol ; col ++ ) memcpy ( rgb [ 0 ] [ row - top ] [ col - left ] , image [ row * width + col ] , 6 ) ; FORC3 memcpy ( rgb [ c + 1 ] , rgb [ 0 ] , sizeof * rgb ) ; for ( row = top ; row < mrow ; row ++ ) for ( col = left ; col < mcol ; col ++ ) { if ( ( f = fcol ( row , col ) ) == 1 ) continue ; pix = image + row * width + col ; hex = allhex [ row % 3 ] [ col % 3 ] [ 0 ] ; color [ 1 ] [ 0 ] = 174 * ( pix [ hex [ 1 ] ] [ 1 ] + pix [ hex [ 0 ] ] [ 1 ] ) - 46 * ( pix [ 2 * hex [ 1 ] ] [ 1 ] + pix [ 2 * hex [ 0 ] ] [ 1 ] ) ; color [ 1 ] [ 1 ] = 223 * pix [ hex [ 3 ] ] [ 1 ] + pix [ hex [ 2 ] ] [ 1 ] * 33 + 92 * ( pix [ 0 ] [ f ] - pix [ - hex [ 2 ] ] [ f ] ) ; FORC ( 2 ) color [ 1 ] [ 2 + c ] = 164 * pix [ hex [ 4 + c ] ] [ 1 ] + 92 * pix [ - 2 * hex [ 4 + c ] ] [ 1 ] + 33 * ( 2 * pix [ 0 ] [ f ] - pix [ 3 * hex [ 4 + c ] ] [ f ] - pix [ - 3 * hex [ 4 + c ] ] [ f ] ) ; FORC4 rgb [ c ^ ! ( ( row - sgrow ) % 3 ) ] [ row - top ] [ col - left ] [ 1 ] = LIM ( color [ 1 ] [ c ] >> 8 , pix [ 0 ] [ 1 ] , pix [ 0 ] [ 3 ] ) ; } for ( pass = 0 ; pass < passes ; pass ++ ) { if ( pass == 1 ) memcpy ( rgb += 4 , buffer , 4 * sizeof * rgb ) ; if ( pass ) { for ( row = top + 2 ; row < mrow - 2 ; row ++ ) for ( col = left + 2 ; col < mcol - 2 ; col ++ ) { if ( ( f = fcol ( row , col ) ) == 1 ) continue ; pix = image + row * width + col ; hex = allhex [ row % 3 ] [ col % 3 ] [ 1 ] ; for ( d = 3 ; d < 6 ; d ++ ) { rix = & rgb [ ( d - 2 ) ^ ! ( ( row - sgrow ) % 3 ) ] [ row - top ] [ col - left ] ; val = rix [ - 2 * hex [ d ] ] [ 1 ] + 2 * rix [ hex [ d ] ] [ 1 ] - rix [ - 2 * hex [ d ] ] [ f ] - 2 * rix [ hex [ d ] ] [ f ] + 3 * rix [ 0 ] [ f ] ; rix [ 0 ] [ 1 ] = LIM ( val / 3 , pix [ 0 ] [ 1 ] , pix [ 0 ] [ 3 ] ) ; } } } for ( row = ( top - sgrow + 4 ) / 3 * 3 + sgrow ; row < mrow - 2 ; row += 3 ) for ( col = ( left - sgcol + 4 ) / 3 * 3 + sgcol ; col < mcol - 2 ; col += 3 ) { rix = & rgb [ 0 ] [ row - top ] [ col - left ] ; h = fcol ( row , col + 1 ) ; memset ( diff , 0 , sizeof diff ) ; for ( i = 1 , d = 0 ; d < 6 ; d ++ , i ^= TS ^ 1 , h ^= 2 ) { for ( c = 0 ; c < 2 ; c ++ , h ^= 2 ) { g = 2 * rix [ 0 ] [ 1 ] - rix [ i << c ] [ 1 ] - rix [ - i << c ] [ 1 ] ; color [ h ] [ d ] = g + rix [ i << c ] [ h ] + rix [ - i << c ] [ h ] ; if ( d > 1 ) diff [ d ] += SQR ( rix [ i << c ] [ 1 ] - rix [ - i << c ] [ 1 ] - rix [ i << c ] [ h ] + rix [ - i << c ] [ h ] ) + SQR ( g ) ; } if ( d > 1 && ( d & 1 ) ) if ( diff [ d - 1 ] < diff [ d ] ) FORC ( 2 ) color [ c * 2 ] [ d ] = color [ c * 2 ] [ d - 1 ] ; if ( d < 2 || ( d & 1 ) ) { FORC ( 2 ) rix [ 0 ] [ c * 2 ] = CLIP ( color [ c * 2 ] [ d ] / 2 ) ; rix += TS * TS ; } } } for ( row = top + 3 ; row < mrow - 3 ; row ++ ) for ( col = left + 3 ; col < mcol - 3 ; col ++ ) { if ( ( f = 2 - fcol ( row , col ) ) == 1 ) continue ; rix = & rgb [ 0 ] [ row - top ] [ col - left ] ; c = ( row - sgrow ) % 3 ? TS : 1 ; h = 3 * ( c ^ TS ^ 1 ) ; for ( d = 0 ; d < 4 ; d ++ , rix += TS * TS ) { i = d > 1 || ( ( d ^ c ) & 1 ) || ( ( ABS ( rix [ 0 ] [ 1 ] - rix [ c ] [ 1 ] ) + ABS ( rix [ 0 ] [ 1 ] - rix [ - c ] [ 1 ] ) ) < 2 * ( ABS ( rix [ 0 ] [ 1 ] - rix [ h ] [ 1 ] ) + ABS ( rix [ 0 ] [ 1 ] - rix [ - h ] [ 1 ] ) ) ) ? c : h ; rix [ 0 ] [ f ] = CLIP ( ( rix [ i ] [ f ] + rix [ - i ] [ f ] + 2 * rix [ 0 ] [ 1 ] - rix [ i ] [ 1 ] - rix [ - i ] [ 1 ] ) / 2 ) ; } } for ( row = top + 2 ; row < mrow - 2 ; row ++ ) if ( ( row - sgrow ) % 3 ) for ( col = left + 2 ; col < mcol - 2 ; col ++ ) if ( ( col - sgcol ) % 3 ) { rix = & rgb [ 0 ] [ row - top ] [ col - left ] ; hex = allhex [ row % 3 ] [ col % 3 ] [ 1 ] ; for ( d = 0 ; d < ndir ; d += 2 , rix += TS * TS ) if ( hex [ d ] + hex [ d + 1 ] ) { g = 3 * rix [ 0 ] [ 1 ] - 2 * rix [ hex [ d ] ] [ 1 ] - rix [ hex [ d + 1 ] ] [ 1 ] ; for ( c = 0 ; c < 4 ; c += 2 ) rix [ 0 ] [ c ] = CLIP ( ( g + 2 * rix [ hex [ d ] ] [ c ] + rix [ hex [ d + 1 ] ] [ c ] ) / 3 ) ; } else { g = 2 * rix [ 0 ] [ 1 ] - rix [ hex [ d ] ] [ 1 ] - rix [ hex [ d + 1 ] ] [ 1 ] ; for ( c = 0 ; c < 4 ; c += 2 ) rix [ 0 ] [ c ] = CLIP ( ( g + rix [ hex [ d ] ] [ c ] + rix [ hex [ d + 1 ] ] [ c ] ) / 2 ) ; } } } rgb = ( ushort ( * ) [ TS ] [ TS ] [ 3 ] ) buffer ; mrow -= top ; mcol -= left ; for ( d = 0 ; d < ndir ; d ++ ) { for ( row = 2 ; row < mrow - 2 ; row ++ ) for ( col = 2 ; col < mcol - 2 ; col ++ ) cielab ( rgb [ d ] [ row ] [ col ] , lab [ row ] [ col ] ) ; for ( f = dir [ d & 3 ] , row = 3 ; row < mrow - 3 ; row ++ ) for ( col = 3 ; col < mcol - 3 ; col ++ ) { lix = & lab [ row ] [ col ] ; g = 2 * lix [ 0 ] [ 0 ] - lix [ f ] [ 0 ] - lix [ - f ] [ 0 ] ; drv [ d ] [ row ] [ col ] = SQR ( g ) + SQR ( ( 2 * lix [ 0 ] [ 1 ] - lix [ f ] [ 1 ] - lix [ - f ] [ 1 ] + g * 500 / 232 ) ) + SQR ( ( 2 * lix [ 0 ] [ 2 ] - lix [ f ] [ 2 ] - lix [ - f ] [ 2 ] - g * 500 / 580 ) ) ; } } memset ( homo , 0 , ndir * TS * TS ) ; for ( row = 4 ; row < mrow - 4 ; row ++ ) for ( col = 4 ; col < mcol - 4 ; col ++ ) { for ( tr = FLT_MAX , d = 0 ; d < ndir ; d ++ ) if ( tr > drv [ d ] [ row ] [ col ] ) tr = drv [ d ] [ row ] [ col ] ; tr *= 8 ; for ( d = 0 ; d < ndir ; d ++ ) for ( v = - 1 ; v <= 1 ; v ++ ) for ( h = - 1 ; h <= 1 ; h ++ ) if ( drv [ d ] [ row + v ] [ col + h ] <= tr ) homo [ d ] [ row ] [ col ] ++ ; } if ( height - top < TS + 4 ) mrow = height - top + 2 ; if ( width - left < TS + 4 ) mcol = width - left + 2 ; for ( row = MIN ( top , 8 ) ; row < mrow - 8 ; row ++ ) for ( col = MIN ( left , 8 ) ; col < mcol - 8 ; col ++ ) { for ( d = 0 ; d < ndir ; d ++ ) for ( hm [ d ] = 0 , v = - 2 ; v <= 2 ; v ++ ) for ( h = - 2 ; h <= 2 ; h ++ ) hm [ d ] += homo [ d ] [ row + v ] [ col + h ] ; for ( d = 0 ; d < ndir - 4 ; d ++ ) if ( hm [ d ] < hm [ d + 4 ] ) hm [ d ] = 0 ; else if ( hm [ d ] > hm [ d + 4 ] ) hm [ d + 4 ] = 0 ; for ( max = hm [ 0 ] , d = 1 ; d < ndir ; d ++ ) if ( max < hm [ d ] ) max = hm [ d ] ; max -= max >> 3 ; memset ( avg , 0 , sizeof avg ) ; for ( d = 0 ; d < ndir ; d ++ ) if ( hm [ d ] >= max ) { FORC3 avg [ c ] += rgb [ d ] [ row ] [ col ] [ c ] ; avg [ 3 ] ++ ; } FORC3 image [ ( row + top ) * width + col + left ] [ c ] = avg [ c ] / avg [ 3 ] ; } } free ( buffer ) ; border_interpolate ( 8 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> # ifdef LIBRAW_LIBRARY_BUILD if ( width < TS || height < TS ) throw LIBRAW_EXCEPTION_IO_CORRUPT ; <S2SV_ModStart> throw LIBRAW_EXCEPTION_IO_CORRUPT ; for ( int i = 0 ; i < 3 ; i ++ ) for ( int j = 0 ; j < 3 ; j ++ ) for ( int k = 0 ; k < 2 ; k ++ ) for ( int l = 0 ; l < 8 ; l ++ ) allhex [ i ] [ j ] [ k ] [ l ] = 32700 ; <S2SV_ModStart> 6 ) ) ; int minv = 0 , maxv = 0 , minh = 0 , maxh = 0 <S2SV_ModStart> 1 ] ; minv = MIN ( v , minv ) ; maxv = MAX ( v , maxv ) ; minh = MIN ( v , minh ) ; maxh = MAX ( v , maxh ) ; <S2SV_ModStart> ; } } # ifdef LIBRAW_LIBRARY_BUILD for ( int i = 0 ; i < 3 ; i ++ ) for ( int j = 0 ; j < 3 ; j ++ ) for ( int k = 0 ; k < 2 ; k ++ ) for ( int l = 0 ; l < 8 ; l ++ ) if ( allhex [ i ] [ j ] [ k ] [ l ] > maxh + maxv * width + 1 || allhex [ i ] [ j ] [ k ] [ l ] < minh + minv * width - 1 ) throw LIBRAW_EXCEPTION_IO_CORRUPT ; int retrycount = 0 ; # endif <S2SV_ModStart> > 2 ) { <S2SV_ModStart> row -- ; # ifdef LIBRAW_LIBRARY_BUILD if ( retrycount ++ > width * height ) throw LIBRAW_EXCEPTION_IO_CORRUPT ; # endif }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14352\n\n```\nCWE-787 void imap_quote_string ( char * dest , size_t dlen , const char * src , bool quote_backtick ) { const char * quote = \"`\\\\\"\\\\\\\\\" ; if ( ! quote_backtick ) quote ++ ; char * pt = dest ; const char * s = src ; * pt ++ = \\'\"\\' ; <S2SV_StartBug> dlen -= 2 ; <S2SV_EndBug> for ( ; * s && dlen ; s ++ ) { if ( strchr ( quote , * s ) ) { if ( dlen < 2 ) break ; dlen -= 2 ; * pt ++ = '\\\\\\\\' ; * pt ++ = * s ; } else { * pt ++ = * s ; dlen -- ; } } * pt ++ = \\'\"\\' ; * pt = '\\\\0' ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dlen -= 3 <S2SV_ModEnd> ; for (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static void request_key_auth_describe ( const struct key * key , struct seq_file * m ) { struct request_key_auth * rka = key -> payload . data [ 0 ] ; seq_puts ( m , \"key:\" ) ; seq_puts ( m , key -> description ) ; <S2SV_StartBug> if ( key_is_instantiated ( key ) ) <S2SV_EndBug> seq_printf ( m , \"<S2SV_blank>pid:%d<S2SV_blank>ci:%zu\" , rka -> pid , rka -> callout_len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( key )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static void pci_lintr_route ( struct pci_vdev * dev ) { struct businfo * bi ; struct intxinfo * ii ; if ( dev -> lintr . pin == 0 ) return ; bi = pci_businfo [ dev -> bus ] ; <S2SV_StartBug> assert ( bi != NULL ) ; <S2SV_EndBug> ii = & bi -> slotinfo [ dev -> slot ] . si_intpins [ dev -> lintr . pin - 1 ] ; if ( ii -> ii_ioapic_irq == 0 ) ii -> ii_ioapic_irq = ioapic_pci_alloc_irq ( dev ) ; <S2SV_StartBug> assert ( ii -> ii_ioapic_irq > 0 ) ; <S2SV_EndBug> if ( ii -> ii_pirq_pin == 0 ) <S2SV_StartBug> ii -> ii_pirq_pin = pirq_alloc_pin ( dev ) ; <S2SV_EndBug> assert ( ii -> ii_pirq_pin > 0 ) ; dev -> lintr . ioapic_irq = ii -> ii_ioapic_irq ; dev -> lintr . pirq_pin = ii -> ii_pirq_pin ; pci_set_cfgdata8 ( dev , PCIR_INTLINE , pirq_irq ( ii -> ii_pirq_pin ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bus ] ; if ( bi == NULL ) { pr_err ( \"%s:<S2SV_blank>pci<S2SV_blank>[%s]<S2SV_blank>has<S2SV_blank>wrong<S2SV_blank>bus<S2SV_blank>%d<S2SV_blank>info!\\\\n\" , __func__ , dev -> name , dev -> bus ) ; return ; } <S2SV_ModEnd> ii = & <S2SV_ModStart> dev ) ; <S2SV_ModEnd> if ( ii <S2SV_ModStart> pirq_alloc_pin ( dev <S2SV_ModEnd> ) ; dev\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4516\n\n```\nCWE-200 static int mp_get_count ( struct sb_uart_state * state , struct serial_icounter_struct * icnt ) { <S2SV_StartBug> struct serial_icounter_struct icount ; <S2SV_EndBug> struct sb_uart_icount cnow ; struct sb_uart_port * port = state -> port ; spin_lock_irq ( & port -> lock ) ; memcpy ( & cnow , & port -> icount , sizeof ( struct sb_uart_icount ) ) ; spin_unlock_irq ( & port -> lock ) ; icount . cts = cnow . cts ; icount . dsr = cnow . dsr ; icount . rng = cnow . rng ; icount . dcd = cnow . dcd ; icount . rx = cnow . rx ; icount . tx = cnow . tx ; icount . frame = cnow . frame ; icount . overrun = cnow . overrun ; icount . parity = cnow . parity ; icount . brk = cnow . brk ; icount . buf_overrun = cnow . buf_overrun ; return copy_to_user ( icnt , & icount , sizeof ( icount ) ) ? - EFAULT : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct serial_icounter_struct icount = { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 static int read_public_key ( RSA * rsa ) { int r ; sc_path_t path ; sc_file_t * file ; u8 buf [ 2048 ] , * p = buf ; size_t bufsize , keysize ; r = select_app_df ( ) ; if ( r ) return 1 ; sc_format_path ( \"I1012\" , & path ) ; r = sc_select_file ( card , & path , & file ) ; if ( r ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>select<S2SV_blank>public<S2SV_blank>key<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , sc_strerror ( r ) ) ; return 2 ; } <S2SV_StartBug> bufsize = file -> size ; <S2SV_EndBug> sc_file_free ( file ) ; r = sc_read_binary ( card , 0 , buf , bufsize , 0 ) ; if ( r < 0 ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>public<S2SV_blank>key<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , sc_strerror ( r ) ) ; return 2 ; } bufsize = r ; do { if ( bufsize < 4 ) return 3 ; keysize = ( p [ 0 ] << 8 ) | p [ 1 ] ; if ( keysize == 0 ) break ; if ( keysize < 3 ) return 3 ; if ( p [ 2 ] == opt_key_num ) break ; p += keysize ; bufsize -= keysize ; } while ( 1 ) ; if ( keysize == 0 ) { printf ( \"Key<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>not<S2SV_blank>found.\\\\n\" , opt_key_num ) ; return 2 ; } return parse_public_key ( p , keysize , rsa ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } bufsize = MIN ( <S2SV_ModStart> file -> size , sizeof buf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void btsnoop_write ( const void * data , size_t length ) { if ( logfile_fd != INVALID_FD ) <S2SV_StartBug> write ( logfile_fd , data , length ) ; <S2SV_EndBug> btsnoop_net_write ( data , length ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != INVALID_FD ) TEMP_FAILURE_RETRY ( <S2SV_ModStart> data , length )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6156\n\n```\nCWE-362 static long ec_device_ioctl_xcmd ( struct cros_ec_dev * ec , void __user * arg ) { long ret ; struct cros_ec_command u_cmd ; struct cros_ec_command * s_cmd ; if ( copy_from_user ( & u_cmd , arg , sizeof ( u_cmd ) ) ) return - EFAULT ; if ( ( u_cmd . outsize > EC_MAX_MSG_BYTES ) || ( u_cmd . insize > EC_MAX_MSG_BYTES ) ) return - EINVAL ; s_cmd = kmalloc ( sizeof ( * s_cmd ) + max ( u_cmd . outsize , u_cmd . insize ) , GFP_KERNEL ) ; if ( ! s_cmd ) return - ENOMEM ; if ( copy_from_user ( s_cmd , arg , sizeof ( * s_cmd ) + u_cmd . outsize ) ) { ret = - EFAULT ; goto exit ; } <S2SV_StartBug> s_cmd -> command += ec -> cmd_offset ; <S2SV_EndBug> ret = cros_ec_cmd_xfer ( ec -> ec_dev , s_cmd ) ; if ( ret < 0 ) goto exit ; <S2SV_StartBug> if ( copy_to_user ( arg , s_cmd , sizeof ( * s_cmd ) + u_cmd . insize ) ) <S2SV_EndBug> ret = - EFAULT ; exit : kfree ( s_cmd ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exit ; } if ( u_cmd . outsize != s_cmd -> outsize || u_cmd . insize != s_cmd -> insize ) { ret = - EINVAL ; goto exit ; } <S2SV_ModStart> s_cmd ) + s_cmd -> <S2SV_ModEnd> insize ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t vp8e_destroy ( vpx_codec_alg_priv_t * ctx ) { # if CONFIG_MULTI_RES_ENCODING if ( ctx -> oxcf . mr_total_resolutions > 0 && ( ctx -> oxcf . mr_encoder_id == ctx -> oxcf . mr_total_resolutions - 1 ) ) { LOWER_RES_FRAME_INFO * shared_mem_loc = ( LOWER_RES_FRAME_INFO * ) ctx -> oxcf . mr_low_res_mode_info ; free ( shared_mem_loc -> mb_info ) ; free ( ctx -> oxcf . mr_low_res_mode_info ) ; } # endif free ( ctx -> cx_data ) ; vp8_remove_compressor ( & ctx -> cpi ) ; <S2SV_StartBug> free ( ctx ) ; <S2SV_EndBug> return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi ) ; vpx_free <S2SV_ModEnd> ( ctx )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17862\n\n```\nCWE-20 static int do_check ( struct bpf_verifier_env * env ) { struct bpf_verifier_state * state ; struct bpf_insn * insns = env -> prog -> insnsi ; struct bpf_reg_state * regs ; int insn_cnt = env -> prog -> len ; int insn_idx , prev_insn_idx = 0 ; int insn_processed = 0 ; bool do_print_state = false ; state = kzalloc ( sizeof ( struct bpf_verifier_state ) , GFP_KERNEL ) ; if ( ! state ) return - ENOMEM ; env -> cur_state = state ; init_reg_state ( env , state -> regs ) ; state -> parent = NULL ; insn_idx = 0 ; for ( ; ; ) { struct bpf_insn * insn ; u8 class ; int err ; if ( insn_idx >= insn_cnt ) { verbose ( env , \"invalid<S2SV_blank>insn<S2SV_blank>idx<S2SV_blank>%d<S2SV_blank>insn_cnt<S2SV_blank>%d\\\\n\" , insn_idx , insn_cnt ) ; return - EFAULT ; } insn = & insns [ insn_idx ] ; class = BPF_CLASS ( insn -> code ) ; if ( ++ insn_processed > BPF_COMPLEXITY_LIMIT_INSNS ) { verbose ( env , \"BPF<S2SV_blank>program<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.<S2SV_blank>Processed<S2SV_blank>%d<S2SV_blank>insn\\\\n\" , insn_processed ) ; return - E2BIG ; } err = is_state_visited ( env , insn_idx ) ; if ( err < 0 ) return err ; if ( err == 1 ) { if ( env -> log . level ) { if ( do_print_state ) verbose ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>safe\\\\n\" , prev_insn_idx , insn_idx ) ; else verbose ( env , \"%d:<S2SV_blank>safe\\\\n\" , insn_idx ) ; } goto process_bpf_exit ; } if ( need_resched ( ) ) cond_resched ( ) ; if ( env -> log . level > 1 || ( env -> log . level && do_print_state ) ) { if ( env -> log . level > 1 ) verbose ( env , \"%d:\" , insn_idx ) ; else verbose ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:\" , prev_insn_idx , insn_idx ) ; print_verifier_state ( env , state ) ; do_print_state = false ; } if ( env -> log . level ) { verbose ( env , \"%d:<S2SV_blank>\" , insn_idx ) ; print_bpf_insn ( verbose , env , insn , env -> allow_ptr_leaks ) ; } err = ext_analyzer_insn_hook ( env , insn_idx , prev_insn_idx ) ; if ( err ) return err ; regs = cur_regs ( env ) ; <S2SV_StartBug> if ( class == BPF_ALU || class == BPF_ALU64 ) { <S2SV_EndBug> err = check_alu_op ( env , insn ) ; if ( err ) return err ; } else if ( class == BPF_LDX ) { enum bpf_reg_type * prev_src_type , src_reg_type ; err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( env , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; src_reg_type = regs [ insn -> src_reg ] . type ; err = check_mem_access ( env , insn_idx , insn -> src_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_READ , insn -> dst_reg ) ; if ( err ) return err ; prev_src_type = & env -> insn_aux_data [ insn_idx ] . ptr_type ; if ( * prev_src_type == NOT_INIT ) { * prev_src_type = src_reg_type ; } else if ( src_reg_type != * prev_src_type && ( src_reg_type == PTR_TO_CTX || * prev_src_type == PTR_TO_CTX ) ) { verbose ( env , \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_STX ) { enum bpf_reg_type * prev_dst_type , dst_reg_type ; if ( BPF_MODE ( insn -> code ) == BPF_XADD ) { err = check_xadd ( env , insn_idx , insn ) ; if ( err ) return err ; insn_idx ++ ; continue ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; dst_reg_type = regs [ insn -> dst_reg ] . type ; err = check_mem_access ( env , insn_idx , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , insn -> src_reg ) ; if ( err ) return err ; prev_dst_type = & env -> insn_aux_data [ insn_idx ] . ptr_type ; if ( * prev_dst_type == NOT_INIT ) { * prev_dst_type = dst_reg_type ; } else if ( dst_reg_type != * prev_dst_type && ( dst_reg_type == PTR_TO_CTX || * prev_dst_type == PTR_TO_CTX ) ) { verbose ( env , \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_ST ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> src_reg != BPF_REG_0 ) { verbose ( env , \"BPF_ST<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; err = check_mem_access ( env , insn_idx , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , - 1 ) ; if ( err ) return err ; } else if ( class == BPF_JMP ) { u8 opcode = BPF_OP ( insn -> code ) ; if ( opcode == BPF_CALL ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> off != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_CALL<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_call ( env , insn -> imm , insn_idx ) ; if ( err ) return err ; } else if ( opcode == BPF_JA ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_JA<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } insn_idx += insn -> off + 1 ; continue ; } else if ( opcode == BPF_EXIT ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_EXIT<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , BPF_REG_0 , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , BPF_REG_0 ) ) { verbose ( env , \"R0<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>as<S2SV_blank>return<S2SV_blank>value\\\\n\" ) ; return - EACCES ; } err = check_return_code ( env ) ; if ( err ) return err ; process_bpf_exit : err = pop_stack ( env , & prev_insn_idx , & insn_idx ) ; if ( err < 0 ) { if ( err != - ENOENT ) return err ; break ; } else { do_print_state = true ; continue ; } } else { err = check_cond_jmp_op ( env , insn , & insn_idx ) ; if ( err ) return err ; } } else if ( class == BPF_LD ) { u8 mode = BPF_MODE ( insn -> code ) ; if ( mode == BPF_ABS || mode == BPF_IND ) { err = check_ld_abs ( env , insn ) ; if ( err ) return err ; } else if ( mode == BPF_IMM ) { err = check_ld_imm ( env , insn ) ; if ( err ) return err ; insn_idx ++ ; <S2SV_StartBug> } else { <S2SV_EndBug> verbose ( env , \"invalid<S2SV_blank>BPF_LD<S2SV_blank>mode\\\\n\" ) ; return - EINVAL ; } } else { verbose ( env , \"unknown<S2SV_blank>insn<S2SV_blank>class<S2SV_blank>%d\\\\n\" , class ) ; return - EINVAL ; } insn_idx ++ ; } verbose ( env , \"processed<S2SV_blank>%d<S2SV_blank>insns,<S2SV_blank>stack<S2SV_blank>depth<S2SV_blank>%d\\\\n\" , insn_processed , env -> prog -> aux -> stack_depth ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> env ) ; env -> insn_aux_data [ insn_idx ] . seen = true ; <S2SV_ModStart> insn_idx ++ ; env -> insn_aux_data [ insn_idx ] . seen = true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0816\n\n```\nCWE-119 WORD32 ih264d_parse_islice_data_cabac ( dec_struct_t * ps_dec , dec_slice_params_t * ps_slice , UWORD16 u2_first_mb_in_slice ) { UWORD8 uc_more_data_flag ; UWORD8 u1_num_mbs , u1_mb_idx ; dec_mb_info_t * ps_cur_mb_info ; deblk_mb_t * ps_cur_deblk_mb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; UWORD16 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; WORD16 i2_cur_mb_addr ; UWORD8 u1_mbaff ; UWORD8 u1_num_mbs_next , u1_end_of_row , u1_tfr_n_mb ; WORD32 ret = OK ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; if ( ps_bitstrm -> u4_ofst & 0x07 ) { ps_bitstrm -> u4_ofst += 8 ; ps_bitstrm -> u4_ofst &= 0xFFFFFFF8 ; } ret = ih264d_init_cabac_dec_envirnoment ( & ( ps_dec -> s_cab_dec_env ) , ps_bitstrm ) ; if ( ret != OK ) return ret ; ih264d_init_cabac_contexts ( I_SLICE , ps_dec ) ; ps_dec -> i1_prev_mb_qp_delta = 0 ; u1_mb_idx = ps_dec -> u1_mb_idx ; u1_num_mbs = u1_mb_idx ; uc_more_data_flag = 1 ; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff ; do { UWORD16 u2_mbx ; ps_dec -> pv_prev_mb_parse_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) { ret = ERROR_MB_ADDRESS_T ; break ; } { UWORD8 u1_mb_type ; ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_dec -> pf_get_mb_info ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , 0 ) ; u2_mbx = ps_dec -> u2_mbx ; ps_cur_mb_info -> u1_tran_form8x8 = 0 ; ps_cur_mb_info -> ps_curmb -> u1_tran_form8x8 = 0 ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; ps_cur_deblk_mb -> u1_mb_type = ps_cur_deblk_mb -> u1_mb_type | D_INTRA_MB ; u1_mb_type = ih264d_parse_mb_type_intra_cabac ( 0 , ps_dec ) ; if ( u1_mb_type > 25 ) return ERROR_MB_TYPE ; ps_cur_mb_info -> u1_mb_type = u1_mb_type ; COPYTHECONTEXT ( \"u1_mb_type\" , u1_mb_type ) ; if ( 25 == u1_mb_type ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = I_PCM_MB ; ret = ih264d_parse_ipcm_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = 0 ; } else { ret = ih264d_parse_imb_cabac ( ps_dec , ps_cur_mb_info , u1_mb_type ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; } if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; if ( ps_cur_mb_info -> u1_topmb && u1_mbaff ) uc_more_data_flag = 1 ; else { uc_more_data_flag = ih264d_decode_terminate ( & ps_dec -> s_cab_dec_env , ps_bitstrm ) ; uc_more_data_flag = ! uc_more_data_flag ; COPYTHECONTEXT ( \"Decode<S2SV_blank>Sliceterm\" , ! uc_more_data_flag ) ; } { mv_pred_t * ps_mv_nmb_start = ps_dec -> ps_mv_cur + ( u1_num_mbs << 4 ) ; mv_pred_t s_mvPred = { { 0 , 0 , 0 , 0 } , { - 1 , - 1 } , 0 , 0 } ; ih264d_rep_mv_colz ( ps_dec , & s_mvPred , ps_mv_nmb_start , 0 , ( UWORD8 ) ( ps_dec -> u1_cur_mb_fld_dec_flag << 1 ) , 4 , 4 ) ; } if ( ps_dec -> u4_num_cores < 3 ) { if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ps_dec -> pf_compute_bs ( ps_dec , ps_cur_mb_info , ( UWORD16 ) ( u1_num_mbs >> u1_mbaff ) ) ; } <S2SV_StartBug> u1_num_mbs ++ ; <S2SV_EndBug> ps_dec -> u2_total_mbs_coded ++ ; } u1_num_mbs_next = i2_pic_wdin_mbs - u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || ( ! uc_more_data_flag ) ; ps_cur_mb_info -> u1_end_of_slice = ( ! uc_more_data_flag ) ; if ( u1_tfr_n_mb || ( ! uc_more_data_flag ) ) { if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } <S2SV_StartBug> if ( u1_tfr_n_mb ) <S2SV_EndBug> u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } while ( uc_more_data_flag ) ; ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ( u2_first_mb_in_slice << u1_mbaff ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } u1_num_mbs <S2SV_ModEnd> ++ ; } <S2SV_ModStart> ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15859\n\n```\nCWE-476 bool ExprResolveLhs ( struct xkb_context * ctx , const ExprDef * expr , const char * * elem_rtrn , const char * * field_rtrn , ExprDef * * index_rtrn ) { switch ( expr -> expr . op ) { case EXPR_IDENT : * elem_rtrn = NULL ; * field_rtrn = xkb_atom_text ( ctx , expr -> ident . ident ) ; * index_rtrn = NULL ; return ( * field_rtrn != NULL ) ; case EXPR_FIELD_REF : * elem_rtrn = xkb_atom_text ( ctx , expr -> field_ref . element ) ; * field_rtrn = xkb_atom_text ( ctx , expr -> field_ref . field ) ; * index_rtrn = NULL ; <S2SV_StartBug> return true ; <S2SV_EndBug> case EXPR_ARRAY_REF : * elem_rtrn = xkb_atom_text ( ctx , expr -> array_ref . element ) ; * field_rtrn = xkb_atom_text ( ctx , expr -> array_ref . field ) ; * index_rtrn = expr -> array_ref . entry ; <S2SV_StartBug> return true ; <S2SV_EndBug> default : break ; } log_wsgo ( ctx , \"Unexpected<S2SV_blank>operator<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>ResolveLhs\\\\n\" , expr -> expr . op ) ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; return ( * elem_rtrn != NULL && * field_rtrn != NULL ) <S2SV_ModEnd> ; case EXPR_ARRAY_REF <S2SV_ModStart> . entry ; if ( expr -> array_ref . element != XKB_ATOM_NONE && * elem_rtrn == NULL ) return false ; if ( * field_rtrn == NULL ) return false ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6536\n\n```\nCWE-200 static inline int xfrm_replay_verify_len ( struct xfrm_replay_state_esn * replay_esn , struct nlattr * rp ) { struct xfrm_replay_state_esn * up ; <S2SV_StartBug> if ( ! replay_esn || ! rp ) <S2SV_EndBug> return 0 ; up = nla_data ( rp ) ; <S2SV_StartBug> if ( xfrm_replay_state_esn_len ( replay_esn ) != <S2SV_EndBug> <S2SV_StartBug> xfrm_replay_state_esn_len ( up ) ) <S2SV_EndBug> return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * up ; int ulen ; <S2SV_ModStart> rp ) ; ulen = xfrm_replay_state_esn_len ( up ) ; if ( nla_len ( rp ) < ulen || <S2SV_ModEnd> xfrm_replay_state_esn_len ( replay_esn <S2SV_ModStart> replay_esn ) != ulen <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void rd_use_partition ( VP9_COMP * cpi , <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> MODE_INFO * * mi_8x8 , TOKENEXTRA * * tp , int mi_row , int mi_col , BLOCK_SIZE bsize , int * rate , int64_t * dist , <S2SV_StartBug> int do_recon ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; const int mis = cm -> mi_stride ; <S2SV_StartBug> const int bsl = b_width_log2 ( bsize ) ; <S2SV_EndBug> const int mi_step = num_4x4_blocks_wide_lookup [ bsize ] / 2 ; const int bss = ( 1 << bsl ) / 4 ; int i , pl ; PARTITION_TYPE partition = PARTITION_NONE ; BLOCK_SIZE subsize ; ENTROPY_CONTEXT l [ 16 * MAX_MB_PLANE ] , a [ 16 * MAX_MB_PLANE ] ; PARTITION_CONTEXT sl [ 8 ] , sa [ 8 ] ; <S2SV_StartBug> int last_part_rate = INT_MAX ; <S2SV_EndBug> int64_t last_part_dist = INT64_MAX ; int64_t last_part_rd = INT64_MAX ; int none_rate = INT_MAX ; int64_t none_dist = INT64_MAX ; int64_t none_rd = INT64_MAX ; int chosen_rate = INT_MAX ; int64_t chosen_dist = INT64_MAX ; int64_t chosen_rd = INT64_MAX ; BLOCK_SIZE sub_subsize = BLOCK_4X4 ; int splits_below = 0 ; BLOCK_SIZE bs_type = mi_8x8 [ 0 ] -> mbmi . sb_type ; int do_partition_search = 1 ; <S2SV_StartBug> if ( mi_row >= cm -> mi_rows || mi_col >= cm -> mi_cols ) <S2SV_EndBug> return ; assert ( num_4x4_blocks_wide_lookup [ bsize ] == num_4x4_blocks_high_lookup [ bsize ] ) ; <S2SV_StartBug> partition = partition_lookup [ bsl ] [ bs_type ] ; <S2SV_EndBug> subsize = get_subsize ( bsize , partition ) ; <S2SV_StartBug> if ( bsize < BLOCK_8X8 ) { <S2SV_EndBug> if ( x -> ab_index != 0 ) { * rate = 0 ; * dist = 0 ; return ; } } else { * ( get_sb_partitioning ( x , bsize ) ) = subsize ; } save_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; <S2SV_StartBug> if ( bsize == BLOCK_16X16 ) { <S2SV_EndBug> <S2SV_StartBug> set_offsets ( cpi , tile , mi_row , mi_col , bsize ) ; <S2SV_EndBug> x -> mb_energy = vp9_block_energy ( cpi , x , bsize ) ; <S2SV_StartBug> } else { <S2SV_EndBug> x -> in_active_map = check_active_map ( cpi , x , mi_row , mi_col , bsize ) ; } if ( ! x -> in_active_map ) { do_partition_search = 0 ; if ( mi_row + ( mi_step >> 1 ) < cm -> mi_rows && mi_col + ( mi_step >> 1 ) < cm -> mi_cols ) { * ( get_sb_partitioning ( x , bsize ) ) = bsize ; bs_type = mi_8x8 [ 0 ] -> mbmi . sb_type = bsize ; subsize = bsize ; partition = PARTITION_NONE ; } } if ( do_partition_search && cpi -> sf . partition_search_type == SEARCH_PARTITION && cpi -> sf . adjust_partitioning_from_last_frame ) { if ( partition == PARTITION_SPLIT && subsize > BLOCK_8X8 ) { sub_subsize = get_subsize ( subsize , PARTITION_SPLIT ) ; splits_below = 1 ; for ( i = 0 ; i < 4 ; i ++ ) { int jj = i >> 1 , ii = i & 0x01 ; MODE_INFO * this_mi = mi_8x8 [ jj * bss * mis + ii * bss ] ; if ( this_mi && this_mi -> mbmi . sb_type >= sub_subsize ) { splits_below = 0 ; } } } if ( partition != PARTITION_NONE && ! splits_below && mi_row + ( mi_step >> 1 ) < cm -> mi_rows && mi_col + ( mi_step >> 1 ) < cm -> mi_cols ) { <S2SV_StartBug> * ( get_sb_partitioning ( x , bsize ) ) = bsize ; <S2SV_EndBug> <S2SV_StartBug> rd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & none_rate , & none_dist , bsize , <S2SV_EndBug> get_block_context ( x , bsize ) , INT64_MAX ) ; pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> if ( none_rate < INT_MAX ) { <S2SV_EndBug> <S2SV_StartBug> none_rate += x -> partition_cost [ pl ] [ PARTITION_NONE ] ; <S2SV_EndBug> <S2SV_StartBug> none_rd = RDCOST ( x -> rdmult , x -> rddiv , none_rate , none_dist ) ; <S2SV_EndBug> } <S2SV_StartBug> restore_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; <S2SV_EndBug> mi_8x8 [ 0 ] -> mbmi . sb_type = bs_type ; <S2SV_StartBug> * ( get_sb_partitioning ( x , bsize ) ) = subsize ; <S2SV_EndBug> } } switch ( partition ) { case PARTITION_NONE : <S2SV_StartBug> rd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & last_part_rate , <S2SV_EndBug> & last_part_dist , bsize , get_block_context ( x , bsize ) , INT64_MAX ) ; break ; case PARTITION_HORZ : <S2SV_StartBug> * get_sb_index ( x , subsize ) = 0 ; <S2SV_EndBug> rd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & last_part_rate , & last_part_dist , subsize , get_block_context ( x , subsize ) , INT64_MAX ) ; <S2SV_StartBug> if ( last_part_rate != INT_MAX && <S2SV_EndBug> bsize >= BLOCK_8X8 && mi_row + ( mi_step >> 1 ) < cm -> mi_rows ) { <S2SV_StartBug> int rt = 0 ; <S2SV_EndBug> int64_t dt = 0 ; <S2SV_StartBug> update_state ( cpi , get_block_context ( x , subsize ) , mi_row , mi_col , <S2SV_EndBug> subsize , 0 ) ; encode_superblock ( cpi , tp , 0 , mi_row , mi_col , subsize ) ; * get_sb_index ( x , subsize ) = 1 ; <S2SV_StartBug> rd_pick_sb_modes ( cpi , tile , mi_row + ( mi_step >> 1 ) , mi_col , & rt , & dt , <S2SV_EndBug> <S2SV_StartBug> subsize , get_block_context ( x , subsize ) , INT64_MAX ) ; <S2SV_EndBug> <S2SV_StartBug> if ( rt == INT_MAX || dt == INT64_MAX ) { <S2SV_EndBug> <S2SV_StartBug> last_part_rate = INT_MAX ; <S2SV_EndBug> last_part_dist = INT64_MAX ; break ; } <S2SV_StartBug> last_part_rate += rt ; <S2SV_EndBug> last_part_dist += dt ; } break ; case PARTITION_VERT : <S2SV_StartBug> * get_sb_index ( x , subsize ) = 0 ; <S2SV_EndBug> rd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & last_part_rate , & last_part_dist , subsize , get_block_context ( x , subsize ) , INT64_MAX ) ; <S2SV_StartBug> if ( last_part_rate != INT_MAX && <S2SV_EndBug> bsize >= BLOCK_8X8 && mi_col + ( mi_step >> 1 ) < cm -> mi_cols ) { <S2SV_StartBug> int rt = 0 ; <S2SV_EndBug> int64_t dt = 0 ; <S2SV_StartBug> update_state ( cpi , get_block_context ( x , subsize ) , mi_row , mi_col , <S2SV_EndBug> subsize , 0 ) ; encode_superblock ( cpi , tp , 0 , mi_row , mi_col , subsize ) ; * get_sb_index ( x , subsize ) = 1 ; <S2SV_StartBug> rd_pick_sb_modes ( cpi , tile , mi_row , mi_col + ( mi_step >> 1 ) , & rt , & dt , <S2SV_EndBug> <S2SV_StartBug> subsize , get_block_context ( x , subsize ) , INT64_MAX ) ; <S2SV_EndBug> <S2SV_StartBug> if ( rt == INT_MAX || dt == INT64_MAX ) { <S2SV_EndBug> <S2SV_StartBug> last_part_rate = INT_MAX ; <S2SV_EndBug> last_part_dist = INT64_MAX ; break ; } <S2SV_StartBug> last_part_rate += rt ; <S2SV_EndBug> last_part_dist += dt ; } break ; case PARTITION_SPLIT : <S2SV_StartBug> last_part_rate = 0 ; <S2SV_EndBug> last_part_dist = 0 ; for ( i = 0 ; i < 4 ; i ++ ) { int x_idx = ( i & 1 ) * ( mi_step >> 1 ) ; int y_idx = ( i >> 1 ) * ( mi_step >> 1 ) ; int jj = i >> 1 , ii = i & 0x01 ; <S2SV_StartBug> int rt ; <S2SV_EndBug> int64_t dt ; if ( ( mi_row + y_idx >= cm -> mi_rows ) || ( mi_col + x_idx >= cm -> mi_cols ) ) continue ; <S2SV_StartBug> * get_sb_index ( x , subsize ) = i ; <S2SV_EndBug> rd_use_partition ( cpi , tile , mi_8x8 + jj * bss * mis + ii * bss , tp , mi_row + y_idx , mi_col + x_idx , subsize , & rt , & dt , <S2SV_StartBug> i != 3 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( rt == INT_MAX || dt == INT64_MAX ) { <S2SV_EndBug> <S2SV_StartBug> last_part_rate = INT_MAX ; <S2SV_EndBug> last_part_dist = INT64_MAX ; break ; } <S2SV_StartBug> last_part_rate += rt ; <S2SV_EndBug> last_part_dist += dt ; } break ; default : assert ( 0 ) ; <S2SV_StartBug> } <S2SV_EndBug> pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> if ( last_part_rate < INT_MAX ) { <S2SV_EndBug> <S2SV_StartBug> last_part_rate += x -> partition_cost [ pl ] [ partition ] ; <S2SV_EndBug> <S2SV_StartBug> last_part_rd = RDCOST ( x -> rdmult , x -> rddiv , last_part_rate , last_part_dist ) ; <S2SV_EndBug> } if ( do_partition_search && cpi -> sf . adjust_partitioning_from_last_frame && cpi -> sf . partition_search_type == SEARCH_PARTITION && partition != PARTITION_SPLIT && bsize > BLOCK_8X8 && ( mi_row + mi_step < cm -> mi_rows || mi_row + ( mi_step >> 1 ) == cm -> mi_rows ) && ( mi_col + mi_step < cm -> mi_cols || mi_col + ( mi_step >> 1 ) == cm -> mi_cols ) ) { BLOCK_SIZE split_subsize = get_subsize ( bsize , PARTITION_SPLIT ) ; <S2SV_StartBug> chosen_rate = 0 ; <S2SV_EndBug> chosen_dist = 0 ; <S2SV_StartBug> restore_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; <S2SV_EndBug> for ( i = 0 ; i < 4 ; i ++ ) { int x_idx = ( i & 1 ) * ( mi_step >> 1 ) ; int y_idx = ( i >> 1 ) * ( mi_step >> 1 ) ; <S2SV_StartBug> int rt = 0 ; <S2SV_EndBug> int64_t dt = 0 ; ENTROPY_CONTEXT l [ 16 * MAX_MB_PLANE ] , a [ 16 * MAX_MB_PLANE ] ; PARTITION_CONTEXT sl [ 8 ] , sa [ 8 ] ; if ( ( mi_row + y_idx >= cm -> mi_rows ) || ( mi_col + x_idx >= cm -> mi_cols ) ) continue ; <S2SV_StartBug> * get_sb_index ( x , split_subsize ) = i ; <S2SV_EndBug> * get_sb_partitioning ( x , bsize ) = split_subsize ; * get_sb_partitioning ( x , split_subsize ) = split_subsize ; save_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; <S2SV_StartBug> rd_pick_sb_modes ( cpi , tile , mi_row + y_idx , mi_col + x_idx , & rt , & dt , <S2SV_EndBug> split_subsize , get_block_context ( x , split_subsize ) , INT64_MAX ) ; restore_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; <S2SV_StartBug> if ( rt == INT_MAX || dt == INT64_MAX ) { <S2SV_EndBug> <S2SV_StartBug> chosen_rate = INT_MAX ; <S2SV_EndBug> chosen_dist = INT64_MAX ; break ; } <S2SV_StartBug> chosen_rate += rt ; <S2SV_EndBug> chosen_dist += dt ; if ( i != 3 ) <S2SV_StartBug> encode_sb ( cpi , tile , tp , mi_row + y_idx , mi_col + x_idx , 0 , <S2SV_EndBug> <S2SV_StartBug> split_subsize ) ; <S2SV_EndBug> pl = partition_plane_context ( xd , mi_row + y_idx , mi_col + x_idx , split_subsize ) ; <S2SV_StartBug> chosen_rate += x -> partition_cost [ pl ] [ PARTITION_NONE ] ; <S2SV_EndBug> } pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> if ( chosen_rate < INT_MAX ) { <S2SV_EndBug> <S2SV_StartBug> chosen_rate += x -> partition_cost [ pl ] [ PARTITION_SPLIT ] ; <S2SV_EndBug> <S2SV_StartBug> chosen_rd = RDCOST ( x -> rdmult , x -> rddiv , chosen_rate , chosen_dist ) ; <S2SV_EndBug> } } if ( last_part_rd < chosen_rd ) { mi_8x8 [ 0 ] -> mbmi . sb_type = bsize ; if ( bsize >= BLOCK_8X8 ) <S2SV_StartBug> * ( get_sb_partitioning ( x , bsize ) ) = subsize ; <S2SV_EndBug> chosen_rate = last_part_rate ; chosen_dist = last_part_dist ; chosen_rd = last_part_rd ; } if ( none_rd < chosen_rd ) { if ( bsize >= BLOCK_8X8 ) <S2SV_StartBug> * ( get_sb_partitioning ( x , bsize ) ) = bsize ; <S2SV_EndBug> chosen_rate = none_rate ; chosen_dist = none_dist ; } <S2SV_StartBug> restore_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; <S2SV_EndBug> if ( bsize == BLOCK_64X64 ) <S2SV_StartBug> assert ( chosen_rate < INT_MAX && chosen_dist < INT64_MAX ) ; <S2SV_EndBug> if ( do_recon ) { int output_enabled = ( bsize == BLOCK_64X64 ) ; <S2SV_StartBug> if ( ( cpi -> oxcf . aq_mode == COMPLEXITY_AQ ) && cm -> seg . update_map ) { <S2SV_EndBug> vp9_select_in_frame_q_segment ( cpi , mi_row , mi_col , output_enabled , chosen_rate ) ; } if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) vp9_cyclic_refresh_set_rate_and_dist_sb ( cpi -> cyclic_refresh , chosen_rate , chosen_dist ) ; encode_sb ( cpi , tile , tp , mi_row , mi_col , output_enabled , bsize ) ; } * rate = chosen_rate ; <S2SV_StartBug> * dist = chosen_dist ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , TileDataEnc * tile_data <S2SV_ModEnd> , MODE_INFO * <S2SV_ModStart> , int do_recon , PC_TREE * pc_tree <S2SV_ModStart> -> common ; TileInfo * const tile_info = & tile_data -> tile_info ; <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> int bsl = b_width_log2_lookup [ bsize ] <S2SV_ModEnd> ; const int <S2SV_ModStart> 8 ] ; RD_COST last_part_rdc , none_rdc , chosen_rdc <S2SV_ModEnd> ; BLOCK_SIZE sub_subsize <S2SV_ModStart> = 1 ; PICK_MODE_CONTEXT * ctx = & pc_tree -> none ; <S2SV_ModStart> ] ) ; vp9_rd_cost_reset ( & last_part_rdc ) ; vp9_rd_cost_reset ( & none_rdc ) ; vp9_rd_cost_reset ( & chosen_rdc ) ; <S2SV_ModStart> partition ) ; pc_tree -> partitioning = partition ; save_context ( x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> bsize == BLOCK_16X16 && cpi -> oxcf . aq_mode <S2SV_ModStart> ( cpi , tile_info , x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> bsize ) ; <S2SV_ModEnd> } if ( <S2SV_ModStart> mi_cols ) { pc_tree -> partitioning = PARTITION_NONE <S2SV_ModEnd> ; rd_pick_sb_modes ( <S2SV_ModStart> ( cpi , tile_data , x , mi_row , mi_col , & none_rdc , bsize , ctx <S2SV_ModEnd> , INT64_MAX ) <S2SV_ModStart> ; if ( none_rdc . rate <S2SV_ModEnd> < INT_MAX ) <S2SV_ModStart> INT_MAX ) { none_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> PARTITION_NONE ] ; none_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , none_rdc . rate , none_rdc . dist <S2SV_ModEnd> ) ; } <S2SV_ModStart> } restore_context ( x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> = bs_type ; pc_tree -> partitioning = partition <S2SV_ModEnd> ; } } <S2SV_ModStart> ( cpi , tile_data , x , mi_row , mi_col , & last_part_rdc , bsize , ctx <S2SV_ModEnd> , INT64_MAX ) <S2SV_ModStart> case PARTITION_HORZ : rd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , & last_part_rdc , subsize , & pc_tree -> horizontal [ 0 ] , <S2SV_ModEnd> INT64_MAX ) ; <S2SV_ModStart> ; if ( last_part_rdc . rate <S2SV_ModEnd> != INT_MAX && <S2SV_ModStart> mi_rows ) { RD_COST tmp_rdc ; PICK_MODE_CONTEXT * ctx = & pc_tree -> horizontal [ 0 ] ; vp9_rd_cost_init ( & tmp_rdc ) <S2SV_ModEnd> ; update_state ( <S2SV_ModStart> ( cpi , td , ctx , mi_row , mi_col , subsize , 0 ) ; encode_superblock ( cpi , td , tp , 0 , mi_row , mi_col , subsize , ctx ) <S2SV_ModEnd> ; rd_pick_sb_modes ( <S2SV_ModStart> ( cpi , tile_data , x , <S2SV_ModEnd> mi_row + ( <S2SV_ModStart> mi_col , & tmp_rdc <S2SV_ModEnd> , subsize , <S2SV_ModStart> , subsize , & pc_tree -> horizontal [ 1 ] <S2SV_ModEnd> , INT64_MAX ) <S2SV_ModStart> ; if ( tmp_rdc . rate <S2SV_ModEnd> == INT_MAX || <S2SV_ModStart> == INT_MAX || tmp_rdc . dist <S2SV_ModEnd> == INT64_MAX ) <S2SV_ModStart> INT64_MAX ) { vp9_rd_cost_reset ( & last_part_rdc ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> break ; } last_part_rdc . rate += tmp_rdc . rate ; last_part_rdc . dist += tmp_rdc . dist ; last_part_rdc . rdcost += tmp_rdc . rdcost <S2SV_ModEnd> ; } break <S2SV_ModStart> case PARTITION_VERT : rd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , & last_part_rdc , subsize , & pc_tree -> vertical [ 0 ] <S2SV_ModEnd> , INT64_MAX ) <S2SV_ModStart> ; if ( last_part_rdc . rate <S2SV_ModEnd> != INT_MAX && <S2SV_ModStart> mi_cols ) { RD_COST tmp_rdc ; PICK_MODE_CONTEXT * ctx = & pc_tree -> vertical [ 0 ] ; vp9_rd_cost_init ( & tmp_rdc ) <S2SV_ModEnd> ; update_state ( <S2SV_ModStart> ( cpi , td , ctx , mi_row , mi_col , subsize , 0 ) ; encode_superblock ( cpi , td , tp , 0 , mi_row , mi_col , subsize , ctx ) <S2SV_ModEnd> ; rd_pick_sb_modes ( <S2SV_ModStart> ( cpi , tile_data , x , <S2SV_ModEnd> mi_row , mi_col <S2SV_ModStart> ) , & tmp_rdc <S2SV_ModEnd> , subsize , <S2SV_ModStart> , subsize , & pc_tree -> vertical [ bsize > BLOCK_8X8 ] , <S2SV_ModEnd> INT64_MAX ) ; <S2SV_ModStart> ; if ( tmp_rdc . rate <S2SV_ModEnd> == INT_MAX || <S2SV_ModStart> == INT_MAX || tmp_rdc . dist <S2SV_ModEnd> == INT64_MAX ) <S2SV_ModStart> INT64_MAX ) { vp9_rd_cost_reset ( & last_part_rdc ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> break ; } last_part_rdc . rate += tmp_rdc . rate ; last_part_rdc . dist += tmp_rdc . dist ; last_part_rdc . rdcost += tmp_rdc . rdcost <S2SV_ModEnd> ; } break <S2SV_ModStart> case PARTITION_SPLIT : if ( bsize == BLOCK_8X8 ) { rd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , & last_part_rdc , subsize , pc_tree -> leaf_split [ 0 ] , INT64_MAX ) ; break ; } last_part_rdc . rate = 0 ; last_part_rdc . dist = 0 ; last_part_rdc . rdcost <S2SV_ModEnd> = 0 ; <S2SV_ModStart> & 0x01 ; RD_COST tmp_rdc <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) continue ; vp9_rd_cost_init ( & tmp_rdc ) ; rd_use_partition ( cpi , td , tile_data , mi_8x8 + jj * bss * mis + ii * bss , tp , mi_row + y_idx , mi_col + x_idx , subsize , & tmp_rdc . rate , & tmp_rdc . dist <S2SV_ModEnd> , i != <S2SV_ModStart> i != 3 , pc_tree -> split [ i ] ) ; if ( tmp_rdc . rate <S2SV_ModEnd> == INT_MAX || <S2SV_ModStart> == INT_MAX || tmp_rdc . dist <S2SV_ModEnd> == INT64_MAX ) <S2SV_ModStart> INT64_MAX ) { vp9_rd_cost_reset ( & last_part_rdc ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> break ; } last_part_rdc . rate += tmp_rdc . rate ; last_part_rdc . dist += tmp_rdc . dist <S2SV_ModEnd> ; } break <S2SV_ModStart> 0 ) ; break ; <S2SV_ModStart> ; if ( last_part_rdc . rate <S2SV_ModEnd> < INT_MAX ) <S2SV_ModStart> INT_MAX ) { last_part_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> partition ] ; last_part_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , last_part_rdc . rate , last_part_rdc . dist <S2SV_ModEnd> ) ; } <S2SV_ModStart> PARTITION_SPLIT ) ; chosen_rdc . rate = 0 ; chosen_rdc . dist <S2SV_ModEnd> = 0 ; <S2SV_ModStart> ; restore_context ( x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> , bsize ) ; pc_tree -> partitioning = PARTITION_SPLIT <S2SV_ModStart> 1 ) ; RD_COST tmp_rdc <S2SV_ModEnd> ; ENTROPY_CONTEXT l <S2SV_ModStart> ) continue ; save_context ( x , mi_row , mi_col , a , l , sa , sl , bsize ) ; pc_tree -> split [ i ] -> partitioning = PARTITION_NONE ; rd_pick_sb_modes ( cpi , tile_data , x , mi_row + y_idx , mi_col + x_idx , & tmp_rdc , split_subsize , & pc_tree -> split [ i ] -> none , INT64_MAX ) ; restore_context ( x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> bsize ) ; if ( tmp_rdc . rate <S2SV_ModEnd> == INT_MAX || <S2SV_ModStart> == INT_MAX || tmp_rdc . dist <S2SV_ModEnd> == INT64_MAX ) <S2SV_ModStart> INT64_MAX ) { vp9_rd_cost_reset ( & chosen_rdc ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> break ; } chosen_rdc . rate += tmp_rdc . rate ; chosen_rdc . dist += tmp_rdc . dist <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( cpi , td , tile_info <S2SV_ModEnd> , tp , <S2SV_ModStart> 0 , split_subsize , pc_tree -> split [ i ] <S2SV_ModStart> split_subsize ) ; chosen_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> ; if ( chosen_rdc . rate <S2SV_ModEnd> < INT_MAX ) <S2SV_ModStart> INT_MAX ) { chosen_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> PARTITION_SPLIT ] ; chosen_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , chosen_rdc . rate , chosen_rdc . dist ) ; } } if ( last_part_rdc . rdcost < chosen_rdc . rdcost <S2SV_ModEnd> ) { mi_8x8 <S2SV_ModStart> >= BLOCK_8X8 ) pc_tree -> partitioning = partition ; chosen_rdc = last_part_rdc ; } if ( none_rdc . rdcost < chosen_rdc . rdcost <S2SV_ModEnd> ) { if <S2SV_ModStart> >= BLOCK_8X8 ) pc_tree -> partitioning = PARTITION_NONE ; chosen_rdc = none_rdc <S2SV_ModEnd> ; } restore_context <S2SV_ModStart> } restore_context ( x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> ) assert ( chosen_rdc . rate <S2SV_ModEnd> < INT_MAX && <S2SV_ModStart> < INT_MAX && chosen_rdc . dist <S2SV_ModEnd> < INT64_MAX ) <S2SV_ModStart> BLOCK_64X64 ) ; encode_sb ( cpi , td , tile_info , tp , mi_row , mi_col , output_enabled , bsize , pc_tree ) ; } * rate = chosen_rdc . rate <S2SV_ModEnd> ; * dist <S2SV_ModStart> * dist = chosen_rdc . dist <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12990\n\n```\nCWE-835 static const u_char * ikev2_auth_print ( netdissect_options * ndo , u_char tpay , const struct isakmp_gen * ext , u_int item_len _U_ , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { struct ikev2_auth a ; const char * v2_auth [ ] = { \"invalid\" , \"rsasig\" , \"shared-secret\" , \"dsssig\" } ; const u_char * authdata = ( const u_char * ) ext + sizeof ( a ) ; unsigned int len ; ND_TCHECK ( * ext ) ; UNALIGNED_MEMCPY ( & a , ext , sizeof ( a ) ) ; ikev2_pay_print ( ndo , NPSTR ( tpay ) , a . h . critical ) ; len = ntohs ( a . h . len ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>method=%s\" , len - 4 , <S2SV_EndBug> STR_OR_ID ( a . auth_method , v2_auth ) ) ) ; <S2SV_StartBug> if ( 1 < ndo -> ndo_vflag && 4 < len ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>authdata=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) authdata , len - sizeof ( a ) ) ) goto trunc ; ND_PRINT ( ( ndo , \")<S2SV_blank>\" ) ) ; <S2SV_StartBug> } else if ( ndo -> ndo_vflag && 4 < len ) { <S2SV_EndBug> if ( ! ike_show_somedata ( ndo , authdata , ep ) ) goto trunc ; } <S2SV_StartBug> return ( const u_char * ) ext + len ; <S2SV_EndBug> trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( tpay ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"<S2SV_blank>len=%u<S2SV_blank>method=%s\" <S2SV_ModEnd> , len - <S2SV_ModStart> ; if ( len > 4 ) { if ( <S2SV_ModEnd> ndo -> ndo_vflag <S2SV_ModStart> ndo -> ndo_vflag > 1 <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> ndo -> ndo_vflag <S2SV_ModEnd> ) { if <S2SV_ModStart> trunc ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3183\n\n```\nCWE-125 static void sycc420_to_rgb ( opj_image_t * img ) { int * d0 , * d1 , * d2 , * r , * g , * b , * nr , * ng , * nb ; const int * y , * cb , * cr , * ny ; <S2SV_StartBug> unsigned int maxw , maxh , max ; <S2SV_EndBug> int offset , upb ; unsigned int i , j ; upb = ( int ) img -> comps [ 0 ] . prec ; offset = 1 << ( upb - 1 ) ; upb = ( 1 << upb ) - 1 ; <S2SV_StartBug> maxw = ( unsigned int ) img -> comps [ 0 ] . w ; maxh = ( unsigned int ) img -> comps [ 0 ] . h ; <S2SV_EndBug> max = maxw * maxh ; y = img -> comps [ 0 ] . data ; cb = img -> comps [ 1 ] . data ; cr = img -> comps [ 2 ] . data ; <S2SV_StartBug> d0 = r = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> <S2SV_StartBug> d1 = g = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> d2 = b = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; if ( r == NULL || g == NULL || b == NULL ) goto fails ; <S2SV_StartBug> for ( i = 0U ; i < ( maxh & ~ ( unsigned int ) 1U ) ; i += 2U ) <S2SV_EndBug> { <S2SV_StartBug> ny = y + maxw ; <S2SV_EndBug> nr = r + maxw ; ng = g + maxw ; nb = b + maxw ; <S2SV_StartBug> for ( j = 0 ; j < ( maxw & ~ ( unsigned int ) 1U ) ; j += 2U ) <S2SV_EndBug> { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * ny , * cb , * cr , nr , ng , nb ) ; ++ ny ; ++ nr ; ++ ng ; ++ nb ; sycc_to_rgb ( offset , upb , * ny , * cb , * cr , nr , ng , nb ) ; ++ ny ; ++ nr ; ++ ng ; ++ nb ; ++ cb ; ++ cr ; } <S2SV_StartBug> if ( j < maxw ) <S2SV_EndBug> { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * ny , * cb , * cr , nr , ng , nb ) ; ++ ny ; ++ nr ; ++ ng ; ++ nb ; ++ cb ; ++ cr ; } y += maxw ; r += maxw ; g += maxw ; b += maxw ; } <S2SV_StartBug> if ( i < maxh ) <S2SV_EndBug> { <S2SV_StartBug> for ( j = 0U ; j < ( maxw & ~ ( unsigned int ) 1U ) ; j += 2U ) <S2SV_EndBug> { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; ++ cb ; ++ cr ; } if ( j < maxw ) { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; } } free ( img -> comps [ 0 ] . data ) ; img -> comps [ 0 ] . data = d0 ; free ( img -> comps [ 1 ] . data ) ; img -> comps [ 1 ] . data = d1 ; free ( img -> comps [ 2 ] . data ) ; img -> comps [ 2 ] . data = d2 ; <S2SV_StartBug> # if defined ( USE_JPWL ) || defined ( USE_MJ2 ) <S2SV_EndBug> <S2SV_StartBug> img -> comps [ 1 ] . w = maxw ; img -> comps [ 1 ] . h = maxh ; <S2SV_EndBug> <S2SV_StartBug> img -> comps [ 2 ] . w = maxw ; img -> comps [ 2 ] . h = maxh ; <S2SV_EndBug> # else <S2SV_StartBug> img -> comps [ 1 ] . w = ( OPJ_UINT32 ) maxw ; img -> comps [ 1 ] . h = ( OPJ_UINT32 ) maxh ; <S2SV_EndBug> <S2SV_StartBug> img -> comps [ 2 ] . w = ( OPJ_UINT32 ) maxw ; img -> comps [ 2 ] . h = ( OPJ_UINT32 ) maxh ; <S2SV_EndBug> # endif img -> comps [ 1 ] . dx = img -> comps [ 0 ] . dx ; img -> comps [ 2 ] . dx = img -> comps [ 0 ] . dx ; img -> comps [ 1 ] . dy = img -> comps [ 0 ] . dy ; <S2SV_StartBug> img -> comps [ 2 ] . dy = img -> comps [ 0 ] . dy ; <S2SV_EndBug> return ; fails : <S2SV_StartBug> if ( r ) free ( r ) ; <S2SV_EndBug> <S2SV_StartBug> if ( g ) free ( g ) ; <S2SV_EndBug> <S2SV_StartBug> if ( b ) free ( b ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ny ; size_t maxw , maxh , max , offx , loopmaxw , offy , loopmaxh ; int offset , upb ; size_t i <S2SV_ModEnd> ; upb = <S2SV_ModStart> maxw = ( size_t ) img -> comps [ 0 ] . w ; maxh = ( size_t ) img -> comps [ 0 ] . h ; max = maxw * maxh ; y = img -> comps [ 0 ] . data ; cb = img -> comps [ 1 ] . data ; cr = img -> comps [ 2 ] . data ; d0 = r = ( int * ) malloc ( sizeof ( int ) * max ) ; d1 = g <S2SV_ModEnd> = ( int <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> max ) ; d2 = b <S2SV_ModEnd> = ( int <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> goto fails ; offx = img -> x0 & 1U ; loopmaxw = maxw - offx ; offy = img -> y0 & 1U ; loopmaxh = maxh - offy ; if ( offy > 0U ) { size_t j ; for ( j = 0 ; j < maxw ; ++ j ) { sycc_to_rgb ( offset , upb , * y , 0 , 0 , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; } } <S2SV_ModStart> i < ( loopmaxh <S2SV_ModEnd> & ~ ( <S2SV_ModStart> & ~ ( size_t <S2SV_ModEnd> ) 1U ) <S2SV_ModStart> 2U ) { size_t j ; <S2SV_ModStart> + maxw ; if ( offx > 0U ) { sycc_to_rgb ( offset , upb , * y , 0 , 0 , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * ny , * cb , * cr , nr , ng , nb ) ; ++ ny ; ++ nr ; ++ ng ; ++ nb ; } <S2SV_ModStart> j < ( loopmaxw <S2SV_ModEnd> & ~ ( <S2SV_ModStart> & ~ ( size_t <S2SV_ModEnd> ) 1U ) <S2SV_ModStart> ( j < loopmaxw <S2SV_ModEnd> ) { sycc_to_rgb <S2SV_ModStart> ( i < loopmaxh ) { size_t j ; <S2SV_ModEnd> for ( j <S2SV_ModStart> & ~ ( size_t <S2SV_ModEnd> ) 1U ) <S2SV_ModStart> = d2 ; <S2SV_ModEnd> img -> comps <S2SV_ModStart> . w = img -> comps [ 2 ] . w = img -> comps [ 0 ] . w ; <S2SV_ModEnd> img -> comps <S2SV_ModStart> . h = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . h = img -> comps [ 0 ] . h ; img -> comps [ 1 ] . dx = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . dx = img -> comps [ 0 ] . dx ; <S2SV_ModEnd> img -> comps <S2SV_ModStart> 1 ] . dy = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . <S2SV_ModEnd> dy = img <S2SV_ModStart> ; img -> color_space = OPJ_CLRSPC_SRGB <S2SV_ModEnd> ; return ; <S2SV_ModStart> ; fails : <S2SV_ModEnd> free ( r <S2SV_ModStart> r ) ; <S2SV_ModEnd> free ( g <S2SV_ModStart> g ) ; <S2SV_ModEnd> free ( b\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 <S2SV_StartBug> static void prefetch_table ( const volatile byte * tab , size_t len ) <S2SV_EndBug> { size_t i ; <S2SV_StartBug> for ( i = 0 ; i < len ; i += 8 * 32 ) <S2SV_EndBug> { ( void ) tab [ i + 0 * 32 ] ; ( void ) tab [ i + 1 * 32 ] ; ( void ) tab [ i + 2 * 32 ] ; ( void ) tab [ i + 3 * 32 ] ; ( void ) tab [ i + 4 * 32 ] ; ( void ) tab [ i + 5 * 32 ] ; ( void ) tab [ i + 6 * 32 ] ; ( void ) tab [ i + 7 * 32 ] ; } <S2SV_StartBug> ( void ) tab [ len - 1 ] ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static inline <S2SV_ModStart> = 0 ; len - i >= 8 * 32 <S2SV_ModEnd> ; i += <S2SV_ModStart> ] ; } for ( ; i < len ; i += 32 ) { ( void ) tab [ i ] ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6767\n\n```\nCWE-119 int ParseRiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int is_rf64 = ! strncmp ( fourcc , \"RF64\" , 4 ) , got_ds64 = 0 ; int64_t total_samples = 0 , infilesize ; RiffChunkHeader riff_chunk_header ; ChunkHeader chunk_header ; WaveHeader WaveHeader ; DS64Chunk ds64_chunk ; uint32_t bcount ; CLEAR ( WaveHeader ) ; CLEAR ( ds64_chunk ) ; infilesize = DoGetFileSize ( infile ) ; if ( ! is_rf64 && infilesize >= 4294967296LL && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) ) { error_line ( \"can\\'t<S2SV_blank>handle<S2SV_blank>.WAV<S2SV_blank>files<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>4<S2SV_blank>GB<S2SV_blank>(non-standard)!\" ) ; return WAVPACK_SOFT_ERROR ; } memcpy ( & riff_chunk_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & riff_chunk_header ) + 4 , sizeof ( RiffChunkHeader ) - 4 , & bcount ) || bcount != sizeof ( RiffChunkHeader ) - 4 || strncmp ( riff_chunk_header . formType , \"WAVE\" , 4 ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & riff_chunk_header , sizeof ( RiffChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( ChunkHeader ) , & bcount ) || bcount != sizeof ( ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , ChunkHeaderFormat ) ; if ( ! strncmp ( chunk_header . ckID , \"ds64\" , 4 ) ) { if ( chunk_header . ckSize < sizeof ( DS64Chunk ) || <S2SV_StartBug> ! DoReadFile ( infile , & ds64_chunk , chunk_header . ckSize , & bcount ) || <S2SV_EndBug> <S2SV_StartBug> bcount != chunk_header . ckSize ) { <S2SV_EndBug> error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && <S2SV_StartBug> ! WavpackAddWrapper ( wpc , & ds64_chunk , chunk_header . ckSize ) ) { <S2SV_EndBug> error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } got_ds64 = 1 ; WavpackLittleEndianToNative ( & ds64_chunk , DS64ChunkFormat ) ; if ( debug_logging_mode ) error_line ( \"DS64:<S2SV_blank>riffSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>dataSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>sampleCount<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>table_length<S2SV_blank>=<S2SV_blank>%d\" , ( long long ) ds64_chunk . riffSize64 , ( long long ) ds64_chunk . dataSize64 , ( long long ) ds64_chunk . sampleCount64 , ds64_chunk . tableLength ) ; if ( ds64_chunk . tableLength * sizeof ( CS64Chunk ) != chunk_header . ckSize - sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } while ( ds64_chunk . tableLength -- ) { CS64Chunk cs64_chunk ; if ( ! DoReadFile ( infile , & cs64_chunk , sizeof ( CS64Chunk ) , & bcount ) || bcount != sizeof ( CS64Chunk ) || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & cs64_chunk , sizeof ( CS64Chunk ) ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } } } else if ( ! strncmp ( chunk_header . ckID , \"fmt<S2SV_blank>\" , 4 ) ) { int supported = TRUE , format ; if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.WAV<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>WAV<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else if ( config -> float_norm_exp ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point<S2SV_blank>(Audition<S2SV_blank>%d:%d<S2SV_blank>float<S2SV_blank>type<S2SV_blank>1)\" , config -> float_norm_exp - 126 , 150 - config -> float_norm_exp ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! strncmp ( chunk_header . ckID , \"data\" , 4 ) ) { int64_t data_chunk_size = ( got_ds64 && chunk_header . ckSize == ( uint32_t ) - 1 ) ? ds64_chunk . dataSize64 : chunk_header . ckSize ; if ( ! WaveHeader . NumChannels || ( is_rf64 && ! got_ds64 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && infilesize - data_chunk_size > 16777216 ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( config -> qmode & QMODE_IGNORE_LENGTH ) { if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { total_samples = data_chunk_size / WaveHeader . BlockAlign ; if ( got_ds64 && total_samples != ds64_chunk . sampleCount64 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 1 ) & ~ 1L ; char * buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & ds64_chunk , sizeof ( DS64Chunk ) <S2SV_ModEnd> , & bcount <S2SV_ModStart> || bcount != sizeof ( DS64Chunk ) <S2SV_ModEnd> ) { error_line <S2SV_ModStart> & ds64_chunk , sizeof ( DS64Chunk ) <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6308\n\n```\nCWE-190 void * xcalloc ( size_t num , size_t size ) { <S2SV_StartBug> void * ptr = malloc ( num * size ) ; <S2SV_EndBug> if ( ptr ) { <S2SV_StartBug> memset ( ptr , '\\\\0' , ( num * size ) ) ; <S2SV_EndBug> } return ptr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) { size_t res ; if ( check_mul_overflow ( num , size , & res ) ) abort ( ) ; void * ptr ; <S2SV_ModEnd> ptr = malloc <S2SV_ModStart> = malloc ( res <S2SV_ModEnd> ) ; if <S2SV_ModStart> '\\\\0' , ( res <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6401\n\n```\nCWE-310 static void read_conf ( FILE * conffile ) { char * buffer , * line , * val ; buffer = loadfile ( conffile ) ; for ( line = strtok ( buffer , \"\\\\r\\\\n\" ) ; line ; line = strtok ( NULL , \"\\\\r\\\\n\" ) ) { if ( ! strncmp ( line , \"export<S2SV_blank>\" , 7 ) ) continue ; val = strchr ( line , '=' ) ; if ( ! val ) { printf ( \"invalid<S2SV_blank>configuration<S2SV_blank>line\\\\n\" ) ; break ; } * val ++ = '\\\\0' ; if ( ! strcmp ( line , \"JSON_INDENT\" ) ) conf . indent = atoi ( val ) ; if ( ! strcmp ( line , \"JSON_COMPACT\" ) ) conf . compact = atoi ( val ) ; if ( ! strcmp ( line , \"JSON_ENSURE_ASCII\" ) ) conf . ensure_ascii = atoi ( val ) ; if ( ! strcmp ( line , \"JSON_PRESERVE_ORDER\" ) ) conf . preserve_order = atoi ( val ) ; if ( ! strcmp ( line , \"JSON_SORT_KEYS\" ) ) conf . sort_keys = atoi ( val ) ; if ( ! strcmp ( line , \"STRIP\" ) ) conf . strip = atoi ( val ) ; <S2SV_StartBug> } <S2SV_EndBug> free ( buffer ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) ; if ( ! strcmp ( line , \"HASHSEED\" ) ) { conf . have_hashseed = 1 ; conf . hashseed = atoi ( val ) ; } else { conf . have_hashseed = 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7115\n\n```\nCWE-119 static void handle_data_packet ( struct mt_connection * curconn , struct mt_mactelnet_hdr * pkthdr , int data_len ) { struct mt_mactelnet_control_hdr cpkt ; struct mt_packet pdata ; unsigned char * data = pkthdr -> data ; unsigned int act_size = 0 ; int got_user_packet = 0 ; int got_pass_packet = 0 ; int got_width_packet = 0 ; int got_height_packet = 0 ; int success ; success = parse_control_packet ( data , data_len - MT_HEADER_LEN , & cpkt ) ; while ( success ) { if ( cpkt . cptype == MT_CPTYPE_BEGINAUTH ) { int plen , i ; if ( ! curconn -> have_pass_salt ) { for ( i = 0 ; i < 16 ; ++ i ) { curconn -> pass_salt [ i ] = rand ( ) % 256 ; } curconn -> have_pass_salt = 1 ; memset ( curconn -> trypassword , 0 , sizeof ( curconn -> trypassword ) ) ; } init_packet ( & pdata , MT_PTYPE_DATA , pkthdr -> dstaddr , pkthdr -> srcaddr , pkthdr -> seskey , curconn -> outcounter ) ; plen = add_control_packet ( & pdata , MT_CPTYPE_PASSSALT , ( curconn -> pass_salt ) , 16 ) ; curconn -> outcounter += plen ; send_udp ( curconn , & pdata ) ; } else if ( cpkt . cptype == MT_CPTYPE_USERNAME && curconn -> state != STATE_ACTIVE ) { memcpy ( curconn -> username , cpkt . data , act_size = ( cpkt . length > MT_MNDP_MAX_STRING_SIZE - 1 ? MT_MNDP_MAX_STRING_SIZE - 1 : cpkt . length ) ) ; curconn -> username [ act_size ] = 0 ; got_user_packet = 1 ; } else if ( cpkt . cptype == MT_CPTYPE_TERM_WIDTH && cpkt . length >= 2 ) { unsigned short width ; memcpy ( & width , cpkt . data , 2 ) ; curconn -> terminal_width = le16toh ( width ) ; got_width_packet = 1 ; } else if ( cpkt . cptype == MT_CPTYPE_TERM_HEIGHT && cpkt . length >= 2 ) { unsigned short height ; memcpy ( & height , cpkt . data , 2 ) ; curconn -> terminal_height = le16toh ( height ) ; got_height_packet = 1 ; } else if ( cpkt . cptype == MT_CPTYPE_TERM_TYPE ) { memcpy ( curconn -> terminal_type , cpkt . data , act_size = ( cpkt . length > 30 - 1 ? 30 - 1 : cpkt . length ) ) ; curconn -> terminal_type [ act_size ] = 0 ; <S2SV_StartBug> } else if ( cpkt . cptype == MT_CPTYPE_PASSWORD ) { <S2SV_EndBug> # if defined ( __linux__ ) && defined ( _POSIX_MEMLOCK_RANGE ) mlock ( curconn -> trypassword , 17 ) ; # endif memcpy ( curconn -> trypassword , cpkt . data , 17 ) ; got_pass_packet = 1 ; } else if ( cpkt . cptype == MT_CPTYPE_PLAINDATA ) { if ( curconn -> state == STATE_ACTIVE && curconn -> ptsfd != - 1 ) { write ( curconn -> ptsfd , cpkt . data , cpkt . length ) ; } } else { <S2SV_StartBug> syslog ( LOG_WARNING , _ ( \"(%d)<S2SV_blank>Unhandeled<S2SV_blank>control<S2SV_blank>packet<S2SV_blank>type:<S2SV_blank>%d\" ) , curconn -> seskey , cpkt . cptype ) ; <S2SV_EndBug> } success = parse_control_packet ( NULL , 0 , & cpkt ) ; } if ( got_user_packet && got_pass_packet ) { user_login ( curconn , pkthdr ) ; } if ( curconn -> state == STATE_ACTIVE && ( got_width_packet || got_height_packet ) ) { set_terminal_size ( curconn -> ptsfd , curconn -> terminal_width , curconn -> terminal_height ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cptype == MT_CPTYPE_PASSWORD && cpkt . length == 17 <S2SV_ModStart> , _ ( \"(%d)<S2SV_blank>Unhandeled<S2SV_blank>control<S2SV_blank>packet<S2SV_blank>type:<S2SV_blank>%d,<S2SV_blank>length:<S2SV_blank>%d\" <S2SV_ModEnd> ) , curconn <S2SV_ModStart> cpkt . cptype , cpkt . length\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17852\n\n```\nCWE-119 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; <S2SV_StartBug> if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { <S2SV_EndBug> coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size ( & src_reg , 4 ) ; } smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; switch ( opcode ) { case BPF_ADD : if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : <S2SV_StartBug> if ( umax_val > 63 ) { <S2SV_EndBug> mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } if ( src_known ) dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_lshift ( tnum_unknown , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : <S2SV_StartBug> if ( umax_val > 63 ) { <S2SV_EndBug> mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( src_known ) dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_rshift ( tnum_unknown , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } <S2SV_StartBug> __reg_deduce_bounds ( dst_reg ) ; <S2SV_EndBug> __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , umax_val ; u64 insn_bitness = <S2SV_ModEnd> ( BPF_CLASS ( <S2SV_ModStart> -> code ) == BPF_ALU64 ) ? 64 : 32 ; <S2SV_ModEnd> smin_val = src_reg <S2SV_ModStart> if ( umax_val >= insn_bitness <S2SV_ModEnd> ) { mark_reg_unknown <S2SV_ModStart> if ( umax_val >= insn_bitness <S2SV_ModEnd> ) { mark_reg_unknown <S2SV_ModStart> break ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size ( & src_reg , 4 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11523\n\n```\nCWE-835 static Image * ReadTXTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char colorspace [ MaxTextExtent ] , text [ MaxTextExtent ] ; Image * image ; IndexPacket * indexes ; long x_offset , y_offset ; MagickBooleanType status ; MagickPixelPacket pixel ; QuantumAny range ; register ssize_t i , x ; register PixelPacket * q ; ssize_t count , type , y ; unsigned long depth , height , max_value , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( text , 0 , sizeof ( text ) ) ; ( void ) ReadBlobString ( image , text ) ; if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { width = 0 ; height = 0 ; max_value = 0 ; * colorspace = '\\\\0' ; count = ( ssize_t ) sscanf ( text + 32 , \"%lu,%lu,%lu,%s\" , & width , & height , & max_value , colorspace ) ; if ( ( count != 4 ) || ( width == 0 ) || ( height == 0 ) || ( max_value == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = width ; image -> rows = height ; for ( depth = 1 ; ( GetQuantumRange ( depth ) + 1 ) < max_value ; depth ++ ) ; image -> depth = depth ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } LocaleLower ( colorspace ) ; i = ( ssize_t ) strlen ( colorspace ) - 1 ; image -> matte = MagickFalse ; if ( ( i > 0 ) && ( colorspace [ i ] == 'a' ) ) { colorspace [ i ] = '\\\\0' ; image -> matte = MagickTrue ; } type = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , colorspace ) ; if ( type < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> colorspace = ( ColorspaceType ) type ; ( void ) ResetMagickMemory ( & pixel , 0 , sizeof ( pixel ) ) ; ( void ) SetImageBackgroundColor ( image ) ; range = GetQuantumRange ( image -> depth ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { double blue , green , index , opacity , red ; red = 0.0 ; green = 0.0 ; blue = 0.0 ; index = 0.0 ; opacity = 0.0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( ReadBlobString ( image , text ) == ( char * ) NULL ) break ; switch ( image -> colorspace ) { case GRAYColorspace : { if ( image -> matte != MagickFalse ) { ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & opacity ) ; green = red ; blue = red ; break ; } ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]\" , & x_offset , & y_offset , & red ) ; green = red ; blue = red ; break ; } case CMYKColorspace : { if ( image -> matte != MagickFalse ) { ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & index , & opacity ) ; break ; } ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & index ) ; break ; } default : { if ( image -> matte != MagickFalse ) { ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & opacity ) ; break ; } ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue ) ; break ; } } if ( strchr ( text , '%' ) != ( char * ) NULL ) { red *= 0.01 * range ; green *= 0.01 * range ; blue *= 0.01 * range ; index *= 0.01 * range ; opacity *= 0.01 * range ; } if ( image -> colorspace == LabColorspace ) { green += ( range + 1 ) / 2.0 ; blue += ( range + 1 ) / 2.0 ; } pixel . red = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( red + 0.5 ) , range ) ; pixel . green = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( green + 0.5 ) , range ) ; pixel . blue = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( blue + 0.5 ) , range ) ; pixel . index = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( index + 0.5 ) , range ) ; pixel . opacity = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( opacity + 0.5 ) , range ) ; q = GetAuthenticPixels ( image , ( ssize_t ) x_offset , ( ssize_t ) y_offset , 1 , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) continue ; SetPixelRed ( q , pixel . red ) ; SetPixelGreen ( q , pixel . green ) ; SetPixelBlue ( q , pixel . blue ) ; if ( image -> colorspace == CMYKColorspace ) { indexes = GetAuthenticIndexQueue ( image ) ; SetPixelIndex ( indexes , pixel . index ) ; } if ( image -> matte != MagickFalse ) SetPixelAlpha ( q , pixel . opacity ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } } <S2SV_StartBug> ( void ) ReadBlobString ( image , text ) ; <S2SV_EndBug> if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5507\n\n```\nCWE-772 static Image * ReadMPCImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char cache_filename [ MagickPathExtent ] , id [ MagickPathExtent ] , keyword [ MagickPathExtent ] , * options ; const unsigned char * p ; GeometryInfo geometry_info ; Image * image ; int c ; LinkedListInfo * profiles ; MagickBooleanType status ; MagickOffsetType offset ; MagickStatusType flags ; register ssize_t i ; size_t depth , length ; ssize_t count ; StringInfo * profile ; unsigned int signature ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( cache_filename , image -> filename , MagickPathExtent ) ; AppendImageFormat ( \"cache\" , cache_filename ) ; c = ReadBlobByte ( image ) ; if ( c == EOF ) { image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } * id = '\\\\0' ; ( void ) ResetMagickMemory ( keyword , 0 , sizeof ( keyword ) ) ; offset = 0 ; do { profiles = ( LinkedListInfo * ) NULL ; length = MagickPathExtent ; options = AcquireString ( ( char * ) NULL ) ; signature = GetMagickSignature ( ( const StringInfo * ) NULL ) ; image -> depth = 8 ; image -> compression = NoCompression ; while ( ( isgraph ( c ) != MagickFalse ) && ( c != ( int ) ':' ) ) { register char * p ; if ( c == ( int ) '{' ) { char * comment ; length = MagickPathExtent ; comment = AcquireString ( ( char * ) NULL ) ; for ( p = comment ; comment != ( char * ) NULL ; p ++ ) { c = ReadBlobByte ( image ) ; if ( c == ( int ) '\\\\\\\\' ) c = ReadBlobByte ( image ) ; else if ( ( c == EOF ) || ( c == ( int ) '}' ) ) break ; if ( ( size_t ) ( p - comment + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; comment = ( char * ) ResizeQuantumMemory ( comment , length + MagickPathExtent , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) break ; p = comment + strlen ( comment ) ; } * p = ( char ) c ; } if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; * p = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; c = ReadBlobByte ( image ) ; } else if ( isalnum ( c ) != MagickFalse ) { length = MagickPathExtent ; p = keyword ; do { if ( c == ( int ) '=' ) break ; if ( ( size_t ) ( p - keyword ) < ( MagickPathExtent - 1 ) ) * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; } while ( c != EOF ) ; * p = '\\\\0' ; p = options ; while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; if ( c == ( int ) '=' ) { c = ReadBlobByte ( image ) ; while ( ( c != ( int ) '}' ) && ( c != EOF ) ) { if ( ( size_t ) ( p - options + 1 ) >= length ) { * p = '\\\\0' ; length <<= 1 ; options = ( char * ) ResizeQuantumMemory ( options , length + MagickPathExtent , sizeof ( * options ) ) ; if ( options == ( char * ) NULL ) break ; p = options + strlen ( options ) ; } * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; if ( c == '\\\\\\\\' ) { c = ReadBlobByte ( image ) ; if ( c == ( int ) '}' ) { * p ++ = ( char ) c ; c = ReadBlobByte ( image ) ; } } if ( * options != '{' ) if ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) break ; } if ( options == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } * p = '\\\\0' ; if ( * options == '{' ) ( void ) CopyMagickString ( options , options + 1 , strlen ( options ) ) ; switch ( * keyword ) { case 'a' : case 'A' : { if ( LocaleCompare ( keyword , \"alpha-color\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> alpha_color , exception ) ; break ; } if ( LocaleCompare ( keyword , \"alpha-trait\" ) == 0 ) { ssize_t alpha_trait ; alpha_trait = ParseCommandOption ( MagickPixelTraitOptions , MagickFalse , options ) ; if ( alpha_trait < 0 ) break ; image -> alpha_trait = ( PixelTrait ) alpha_trait ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'b' : case 'B' : { if ( LocaleCompare ( keyword , \"background-color\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> background_color , exception ) ; break ; } if ( LocaleCompare ( keyword , \"blue-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . blue_primary . x = geometry_info . rho ; image -> chromaticity . blue_primary . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . blue_primary . y = image -> chromaticity . blue_primary . x ; break ; } if ( LocaleCompare ( keyword , \"border-color\" ) == 0 ) { ( void ) QueryColorCompliance ( options , AllCompliance , & image -> border_color , exception ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'c' : case 'C' : { if ( LocaleCompare ( keyword , \"class\" ) == 0 ) { ssize_t storage_class ; storage_class = ParseCommandOption ( MagickClassOptions , MagickFalse , options ) ; if ( storage_class < 0 ) break ; image -> storage_class = ( ClassType ) storage_class ; break ; } if ( LocaleCompare ( keyword , \"colors\" ) == 0 ) { image -> colors = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"colorspace\" ) == 0 ) { ssize_t colorspace ; colorspace = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , options ) ; if ( colorspace < 0 ) break ; image -> colorspace = ( ColorspaceType ) colorspace ; break ; } if ( LocaleCompare ( keyword , \"compression\" ) == 0 ) { ssize_t compression ; compression = ParseCommandOption ( MagickCompressOptions , MagickFalse , options ) ; if ( compression < 0 ) break ; image -> compression = ( CompressionType ) compression ; break ; } if ( LocaleCompare ( keyword , \"columns\" ) == 0 ) { image -> columns = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'd' : case 'D' : { if ( LocaleCompare ( keyword , \"delay\" ) == 0 ) { image -> delay = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"depth\" ) == 0 ) { image -> depth = StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"dispose\" ) == 0 ) { ssize_t dispose ; dispose = ParseCommandOption ( MagickDisposeOptions , MagickFalse , options ) ; if ( dispose < 0 ) break ; image -> dispose = ( DisposeType ) dispose ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'e' : case 'E' : { if ( LocaleCompare ( keyword , \"endian\" ) == 0 ) { ssize_t endian ; endian = ParseCommandOption ( MagickEndianOptions , MagickFalse , options ) ; if ( endian < 0 ) break ; image -> endian = ( EndianType ) endian ; break ; } if ( LocaleCompare ( keyword , \"error\" ) == 0 ) { image -> error . mean_error_per_pixel = StringToDouble ( options , ( char * * ) NULL ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'g' : case 'G' : { if ( LocaleCompare ( keyword , \"gamma\" ) == 0 ) { image -> gamma = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"green-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . green_primary . x = geometry_info . rho ; image -> chromaticity . green_primary . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . green_primary . y = image -> chromaticity . green_primary . x ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'i' : case 'I' : { if ( LocaleCompare ( keyword , \"id\" ) == 0 ) { ( void ) CopyMagickString ( id , options , MagickPathExtent ) ; break ; } if ( LocaleCompare ( keyword , \"iterations\" ) == 0 ) { image -> iterations = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'm' : case 'M' : { if ( LocaleCompare ( keyword , \"magick-signature\" ) == 0 ) { signature = ( unsigned int ) StringToUnsignedLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"maximum-error\" ) == 0 ) { image -> error . normalized_maximum_error = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"mean-error\" ) == 0 ) { image -> error . normalized_mean_error = StringToDouble ( options , ( char * * ) NULL ) ; break ; } if ( LocaleCompare ( keyword , \"montage\" ) == 0 ) { ( void ) CloneString ( & image -> montage , options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'o' : case 'O' : { if ( LocaleCompare ( keyword , \"orientation\" ) == 0 ) { ssize_t orientation ; orientation = ParseCommandOption ( MagickOrientationOptions , MagickFalse , options ) ; if ( orientation < 0 ) break ; image -> orientation = ( OrientationType ) orientation ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'p' : case 'P' : { if ( LocaleCompare ( keyword , \"page\" ) == 0 ) { char * geometry ; geometry = GetPageGeometry ( options ) ; ( void ) ParseAbsoluteGeometry ( geometry , & image -> page ) ; geometry = DestroyString ( geometry ) ; break ; } if ( LocaleCompare ( keyword , \"pixel-intensity\" ) == 0 ) { ssize_t intensity ; intensity = ParseCommandOption ( MagickPixelIntensityOptions , MagickFalse , options ) ; if ( intensity < 0 ) break ; image -> intensity = ( PixelIntensityMethod ) intensity ; break ; } if ( ( LocaleNCompare ( keyword , \"profile:\" , 8 ) == 0 ) || ( LocaleNCompare ( keyword , \"profile-\" , 8 ) == 0 ) ) { if ( profiles == ( LinkedListInfo * ) NULL ) profiles = NewLinkedList ( 0 ) ; ( void ) AppendValueToLinkedList ( profiles , AcquireString ( keyword + 8 ) ) ; profile = BlobToStringInfo ( ( const void * ) NULL , ( size_t ) StringToLong ( options ) ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) SetImageProfile ( image , keyword + 8 , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'q' : case 'Q' : { if ( LocaleCompare ( keyword , \"quality\" ) == 0 ) { image -> quality = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'r' : case 'R' : { if ( LocaleCompare ( keyword , \"red-primary\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . red_primary . x = geometry_info . rho ; if ( ( flags & SigmaValue ) != 0 ) image -> chromaticity . red_primary . y = geometry_info . sigma ; break ; } if ( LocaleCompare ( keyword , \"rendering-intent\" ) == 0 ) { ssize_t rendering_intent ; rendering_intent = ParseCommandOption ( MagickIntentOptions , MagickFalse , options ) ; if ( rendering_intent < 0 ) break ; image -> rendering_intent = ( RenderingIntent ) rendering_intent ; break ; } if ( LocaleCompare ( keyword , \"resolution\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> resolution . x = geometry_info . rho ; image -> resolution . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> resolution . y = image -> resolution . x ; break ; } if ( LocaleCompare ( keyword , \"rows\" ) == 0 ) { image -> rows = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 's' : case 'S' : { if ( LocaleCompare ( keyword , \"scene\" ) == 0 ) { image -> scene = StringToUnsignedLong ( options ) ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 't' : case 'T' : { if ( LocaleCompare ( keyword , \"ticks-per-second\" ) == 0 ) { image -> ticks_per_second = ( ssize_t ) StringToLong ( options ) ; break ; } if ( LocaleCompare ( keyword , \"tile-offset\" ) == 0 ) { char * geometry ; geometry = GetPageGeometry ( options ) ; ( void ) ParseAbsoluteGeometry ( geometry , & image -> tile_offset ) ; geometry = DestroyString ( geometry ) ; } if ( LocaleCompare ( keyword , \"type\" ) == 0 ) { ssize_t type ; type = ParseCommandOption ( MagickTypeOptions , MagickFalse , options ) ; if ( type < 0 ) break ; image -> type = ( ImageType ) type ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'u' : case 'U' : { if ( LocaleCompare ( keyword , \"units\" ) == 0 ) { ssize_t units ; units = ParseCommandOption ( MagickResolutionOptions , MagickFalse , options ) ; if ( units < 0 ) break ; image -> units = ( ResolutionType ) units ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } case 'w' : case 'W' : { if ( LocaleCompare ( keyword , \"white-point\" ) == 0 ) { flags = ParseGeometry ( options , & geometry_info ) ; image -> chromaticity . white_point . x = geometry_info . rho ; image -> chromaticity . white_point . y = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> chromaticity . white_point . y = image -> chromaticity . white_point . x ; break ; } ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } default : { ( void ) SetImageProperty ( image , keyword , options , exception ) ; break ; } } } else c = ReadBlobByte ( image ) ; while ( isspace ( ( int ) ( ( unsigned char ) c ) ) != 0 ) c = ReadBlobByte ( image ) ; } options = DestroyString ( options ) ; ( void ) ReadBlobByte ( image ) ; if ( ( LocaleCompare ( id , \"MagickCache\" ) != 0 ) || ( image -> storage_class == UndefinedClass ) || ( image -> compression == UndefinedCompression ) || ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( signature != GetMagickSignature ( ( const StringInfo * ) NULL ) ) ThrowReaderException ( CacheError , \"IncompatibleAPI\" ) ; if ( image -> montage != ( char * ) NULL ) { register char * p ; length = MagickPathExtent ; image -> directory = AcquireString ( ( char * ) NULL ) ; p = image -> directory ; do { * p = '\\\\0' ; if ( ( strlen ( image -> directory ) + MagickPathExtent ) >= length ) { length <<= 1 ; image -> directory = ( char * ) ResizeQuantumMemory ( image -> directory , length + MagickPathExtent , sizeof ( * image -> directory ) ) ; if ( image -> directory == ( char * ) NULL ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; p = image -> directory + strlen ( image -> directory ) ; } c = ReadBlobByte ( image ) ; * p ++ = ( char ) c ; } while ( c != ( int ) '\\\\0' ) ; } if ( profiles != ( LinkedListInfo * ) NULL ) { const char * name ; const StringInfo * profile ; register unsigned char * p ; ResetLinkedListIterator ( profiles ) ; name = ( const char * ) GetNextValueInLinkedList ( profiles ) ; while ( name != ( const char * ) NULL ) { profile = GetImageProfile ( image , name ) ; if ( profile != ( StringInfo * ) NULL ) { p = GetStringInfoDatum ( profile ) ; count = ReadBlob ( image , GetStringInfoLength ( profile ) , p ) ; } name = ( const char * ) GetNextValueInLinkedList ( profiles ) ; } profiles = DestroyLinkedList ( profiles , RelinquishMagickMemory ) ; } depth = GetImageQuantumDepth ( image , MagickFalse ) ; if ( image -> storage_class == PseudoClass ) { <S2SV_StartBug> if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) <S2SV_EndBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( image -> colors != 0 ) { size_t packet_size ; unsigned char * colormap ; packet_size = ( size_t ) ( 3UL * depth / 8UL ) ; colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , packet_size * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , packet_size * image -> colors , colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; p = colormap ; switch ( depth ) { default : ThrowReaderException ( CorruptImageError , \"ImageDepthNotSupported\" ) ; case 8 : { unsigned char pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . red = ScaleCharToQuantum ( pixel ) ; p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( pixel ) ; p = PushCharPixel ( p , & pixel ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( pixel ) ; } break ; } case 16 : { unsigned short pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . red = ScaleShortToQuantum ( pixel ) ; p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . green = ScaleShortToQuantum ( pixel ) ; p = PushShortPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . blue = ScaleShortToQuantum ( pixel ) ; } break ; } case 32 : { unsigned int pixel ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . red = ScaleLongToQuantum ( pixel ) ; p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . green = ScaleLongToQuantum ( pixel ) ; p = PushLongPixel ( MSBEndian , p , & pixel ) ; image -> colormap [ i ] . blue = ScaleLongToQuantum ( pixel ) ; } break ; } } colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; <S2SV_StartBug> status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; <S2SV_EndBug> if ( status == MagickFalse ) <S2SV_StartBug> return ( DestroyImageList ( image ) ) ; <S2SV_EndBug> status = PersistPixelCache ( image , cache_filename , MagickTrue , & offset , exception ) ; if ( status == MagickFalse ) ThrowReaderException ( CacheError , \"UnableToPersistPixelCache\" ) ; do { c = ReadBlobByte ( image ) ; } while ( ( isgraph ( c ) == MagickFalse ) && ( c != EOF ) ) ; if ( c != EOF ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( c != EOF ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PseudoClass ) { image -> colormap = ( PixelInfo * ) AcquireQuantumMemory ( <S2SV_ModEnd> image -> colors <S2SV_ModStart> image -> colors + 1 , sizeof ( * image -> colormap ) ) ; if ( image -> colormap == ( PixelInfo * ) NULL <S2SV_ModEnd> ) ThrowReaderException ( <S2SV_ModStart> ) break ; if ( ( AcquireMagickResource ( WidthResource <S2SV_ModEnd> , image -> <S2SV_ModStart> image -> columns ) == MagickFalse ) || ( AcquireMagickResource ( HeightResource <S2SV_ModStart> image -> rows ) <S2SV_ModEnd> == MagickFalse ) <S2SV_ModStart> == MagickFalse ) ) ThrowReaderException ( ImageError , \"WidthOrHeightExceedsLimit\" <S2SV_ModEnd> ) ; status\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9903\n\n```\nCWE-200 static int sched_read_attr ( struct sched_attr __user * uattr , struct sched_attr * attr , unsigned int usize ) { int ret ; if ( ! access_ok ( VERIFY_WRITE , uattr , usize ) ) return - EFAULT ; if ( usize < sizeof ( * attr ) ) { unsigned char * addr ; unsigned char * end ; addr = ( void * ) attr + usize ; end = ( void * ) attr + sizeof ( * attr ) ; for ( ; addr < end ; addr ++ ) { if ( * addr ) goto err_size ; } attr -> size = usize ; } <S2SV_StartBug> ret = copy_to_user ( uattr , attr , usize ) ; <S2SV_EndBug> if ( ret ) return - EFAULT ; out : return ret ; err_size : ret = - E2BIG ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , attr , attr -> size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8654\n\n```\nCWE-119 void jpc_qmfb_split_colres ( jpc_fix_t * a , int numrows , int numcols , int stride , int parity ) { int bufsize = JPC_CEILDIVPOW2 ( numrows , 1 ) ; jpc_fix_t splitbuf [ QMFB_SPLITBUFSIZE * JPC_QMFB_COLGRPSIZE ] ; jpc_fix_t * buf = splitbuf ; jpc_fix_t * srcptr ; jpc_fix_t * dstptr ; register jpc_fix_t * srcptr2 ; register jpc_fix_t * dstptr2 ; register int n ; register int i ; int m ; int hstartcol ; if ( bufsize > QMFB_SPLITBUFSIZE ) { <S2SV_StartBug> if ( ! ( buf = jas_alloc2 ( bufsize , sizeof ( jpc_fix_t ) ) ) ) { <S2SV_EndBug> abort ( ) ; } } if ( numrows >= 2 ) { hstartcol = ( numrows + 1 - parity ) >> 1 ; m = numrows - hstartcol ; n = m ; dstptr = buf ; srcptr = & a [ ( 1 - parity ) * stride ] ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < numcols ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } dstptr += numcols ; srcptr += stride << 1 ; } dstptr = & a [ ( 1 - parity ) * stride ] ; srcptr = & a [ ( 2 - parity ) * stride ] ; n = numrows - m - ( ! parity ) ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < numcols ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } dstptr += stride ; srcptr += stride << 1 ; } dstptr = & a [ hstartcol * stride ] ; srcptr = buf ; n = m ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < numcols ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } dstptr += stride ; srcptr += numcols ; } } if ( buf != splitbuf ) { jas_free ( buf ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( buf = jas_alloc3 ( bufsize , numcols <S2SV_ModEnd> , sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2482\n\n```\nCWE-476 static void sctp_sock_migrate ( struct sock * oldsk , struct sock * newsk , struct sctp_association * assoc , sctp_socket_type_t type ) { struct sctp_sock * oldsp = sctp_sk ( oldsk ) ; struct sctp_sock * newsp = sctp_sk ( newsk ) ; struct sctp_bind_bucket * pp ; struct sctp_endpoint * newep = newsp -> ep ; struct sk_buff * skb , * tmp ; struct sctp_ulpevent * event ; int flags = 0 ; newsk -> sk_sndbuf = oldsk -> sk_sndbuf ; newsk -> sk_rcvbuf = oldsk -> sk_rcvbuf ; inet_sk_copy_descendant ( newsk , oldsk ) ; newsp -> ep = newep ; newsp -> hmac = NULL ; pp = sctp_sk ( oldsk ) -> bind_hash ; sk_add_bind_node ( newsk , & pp -> owner ) ; sctp_sk ( newsk ) -> bind_hash = pp ; inet_sk ( newsk ) -> num = inet_sk ( oldsk ) -> num ; if ( PF_INET6 == assoc -> base . sk -> sk_family ) flags = SCTP_ADDR6_ALLOWED ; if ( assoc -> peer . ipv4_address ) flags |= SCTP_ADDR4_PEERSUPP ; if ( assoc -> peer . ipv6_address ) flags |= SCTP_ADDR6_PEERSUPP ; sctp_bind_addr_copy ( & newsp -> ep -> base . bind_addr , & oldsp -> ep -> base . bind_addr , SCTP_SCOPE_GLOBAL , GFP_KERNEL , flags ) ; sctp_skb_for_each ( skb , & oldsk -> sk_receive_queue , tmp ) { event = sctp_skb2event ( skb ) ; if ( event -> asoc == assoc ) { <S2SV_StartBug> sctp_sock_rfree ( skb ) ; <S2SV_EndBug> __skb_unlink ( skb , & oldsk -> sk_receive_queue ) ; __skb_queue_tail ( & newsk -> sk_receive_queue , skb ) ; <S2SV_StartBug> sctp_skb_set_owner_r ( skb , newsk ) ; <S2SV_EndBug> } } skb_queue_head_init ( & newsp -> pd_lobby ) ; sctp_sk ( newsk ) -> pd_mode = assoc -> ulpq . pd_mode ; if ( sctp_sk ( oldsk ) -> pd_mode ) { struct sk_buff_head * queue ; if ( assoc -> ulpq . pd_mode ) { queue = & newsp -> pd_lobby ; } else queue = & newsk -> sk_receive_queue ; sctp_skb_for_each ( skb , & oldsp -> pd_lobby , tmp ) { event = sctp_skb2event ( skb ) ; if ( event -> asoc == assoc ) { <S2SV_StartBug> sctp_sock_rfree ( skb ) ; <S2SV_EndBug> __skb_unlink ( skb , & oldsp -> pd_lobby ) ; __skb_queue_tail ( queue , skb ) ; <S2SV_StartBug> sctp_skb_set_owner_r ( skb , newsk ) ; <S2SV_EndBug> } } if ( assoc -> ulpq . pd_mode ) <S2SV_StartBug> sctp_clear_pd ( oldsk ) ; <S2SV_EndBug> } newsp -> type = type ; sctp_lock_sock ( newsk ) ; sctp_assoc_migrate ( assoc , newsk ) ; if ( sctp_state ( assoc , CLOSED ) && sctp_style ( newsk , TCP ) ) newsk -> sk_shutdown |= RCV_SHUTDOWN ; newsk -> sk_state = SCTP_SS_ESTABLISHED ; sctp_release_sock ( newsk ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> assoc ) { sctp_sock_rfree_frag <S2SV_ModEnd> ( skb ) <S2SV_ModStart> skb ) ; sctp_skb_set_owner_r_frag <S2SV_ModEnd> ( skb , <S2SV_ModStart> assoc ) { sctp_sock_rfree_frag <S2SV_ModEnd> ( skb ) <S2SV_ModStart> skb ) ; sctp_skb_set_owner_r_frag <S2SV_ModEnd> ( skb , <S2SV_ModStart> sctp_clear_pd ( oldsk ) ; } sctp_skb_for_each ( skb , & assoc -> ulpq . reasm , tmp ) { sctp_sock_rfree_frag ( skb ) ; sctp_skb_set_owner_r_frag ( skb , newsk ) ; } sctp_skb_for_each ( skb , & assoc -> ulpq . lobby , tmp ) { sctp_sock_rfree_frag ( skb ) ; sctp_skb_set_owner_r_frag ( skb , newsk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static void nsc_decode ( NSC_CONTEXT * context ) <S2SV_EndBug> { UINT16 x ; UINT16 y ; <S2SV_StartBug> UINT16 rw = ROUND_UP_TO ( context -> width , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> BYTE shift = context -> ColorLossLevel - 1 ; <S2SV_EndBug> <S2SV_StartBug> BYTE * bmpdata = context -> BitmapData ; <S2SV_EndBug> for ( y = 0 ; y < context -> height ; y ++ ) { const BYTE * yplane ; const BYTE * coplane ; const BYTE * cgplane ; const BYTE * aplane = context -> priv -> PlaneBuffers [ 3 ] + y * context -> width ; if ( context -> ChromaSubsamplingLevel ) { yplane = context -> priv -> PlaneBuffers [ 0 ] + y * rw ; coplane = context -> priv -> PlaneBuffers [ 1 ] + ( y >> 1 ) * ( rw >> 1 ) ; cgplane = context -> priv -> PlaneBuffers [ 2 ] + ( y >> 1 ) * ( rw >> 1 ) ; } else { yplane = context -> priv -> PlaneBuffers [ 0 ] + y * context -> width ; coplane = context -> priv -> PlaneBuffers [ 1 ] + y * context -> width ; cgplane = context -> priv -> PlaneBuffers [ 2 ] + y * context -> width ; } for ( x = 0 ; x < context -> width ; x ++ ) { INT16 y_val = ( INT16 ) * yplane ; INT16 co_val = ( INT16 ) ( INT8 ) ( * coplane << shift ) ; INT16 cg_val = ( INT16 ) ( INT8 ) ( * cgplane << shift ) ; INT16 r_val = y_val + co_val - cg_val ; INT16 g_val = y_val + cg_val ; INT16 b_val = y_val - co_val - cg_val ; <S2SV_StartBug> * bmpdata ++ = MINMAX ( b_val , 0 , 0xFF ) ; <S2SV_EndBug> * bmpdata ++ = MINMAX ( g_val , 0 , 0xFF ) ; * bmpdata ++ = MINMAX ( r_val , 0 , 0xFF ) ; * bmpdata ++ = * aplane ; yplane ++ ; coplane += ( context -> ChromaSubsamplingLevel ? x % 2 : 1 ) ; cgplane += ( context -> ChromaSubsamplingLevel ? x % 2 : 1 ) ; aplane ++ ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> nsc_decode ( NSC_CONTEXT <S2SV_ModStart> ; UINT16 rw ; BYTE shift ; BYTE * bmpdata ; size_t pos = 0 ; if ( ! context ) return FALSE ; rw <S2SV_ModStart> 8 ) ; <S2SV_ModEnd> shift = context <S2SV_ModStart> - 1 ; <S2SV_ModEnd> bmpdata = context <S2SV_ModStart> context -> BitmapData ; if ( ! bmpdata ) return FALSE <S2SV_ModStart> - cg_val ; if ( pos + 4 > context -> BitmapDataLength ) return FALSE ; pos += 4 ; <S2SV_ModStart> ; } } return TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9995\n\n```\nCWE-119 static int decompress_i ( AVCodecContext * avctx , uint32_t * dst , int linesize ) { SCPRContext * s = avctx -> priv_data ; GetByteContext * gb = & s -> gb ; int cx = 0 , cx1 = 0 , k = 0 , clr = 0 ; int run , r , g , b , off , y = 0 , x = 0 , z , ret ; unsigned backstep = linesize - avctx -> width ; const int cxshift = s -> cxshift ; unsigned lx , ly , ptype ; reinit_tables ( s ) ; bytestream2_skip ( gb , 2 ) ; init_rangecoder ( & s -> rc , gb ) ; while ( k < avctx -> width + 1 ) { ret = decode_unit ( s , & s -> pixel_model [ 0 ] [ cx + cx1 ] , 400 , & r ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = r >> cxshift ; ret = decode_unit ( s , & s -> pixel_model [ 1 ] [ cx + cx1 ] , 400 , & g ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = g >> cxshift ; ret = decode_unit ( s , & s -> pixel_model [ 2 ] [ cx + cx1 ] , 400 , & b ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = b >> cxshift ; ret = decode_value ( s , s -> run_model [ 0 ] , 256 , 400 , & run ) ; if ( ret < 0 ) return ret ; clr = ( b << 16 ) + ( g << 8 ) + r ; k += run ; while ( run -- > 0 ) { <S2SV_StartBug> dst [ y * linesize + x ] = clr ; <S2SV_EndBug> lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } } off = - linesize - 1 ; ptype = 0 ; while ( x < avctx -> width && y < avctx -> height ) { ret = decode_value ( s , s -> op_model [ ptype ] , 6 , 1000 , & ptype ) ; if ( ret < 0 ) return ret ; if ( ptype == 0 ) { ret = decode_unit ( s , & s -> pixel_model [ 0 ] [ cx + cx1 ] , 400 , & r ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = r >> cxshift ; ret = decode_unit ( s , & s -> pixel_model [ 1 ] [ cx + cx1 ] , 400 , & g ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = g >> cxshift ; ret = decode_unit ( s , & s -> pixel_model [ 2 ] [ cx + cx1 ] , 400 , & b ) ; if ( ret < 0 ) return ret ; clr = ( b << 16 ) + ( g << 8 ) + r ; } if ( ptype > 5 ) return AVERROR_INVALIDDATA ; ret = decode_value ( s , s -> run_model [ ptype ] , 256 , 400 , & run ) ; if ( ret < 0 ) return ret ; switch ( ptype ) { case 0 : while ( run -- > 0 ) { if ( y >= avctx -> height ) return AVERROR_INVALIDDATA ; dst [ y * linesize + x ] = clr ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } break ; case 1 : while ( run -- > 0 ) { if ( y >= avctx -> height ) return AVERROR_INVALIDDATA ; dst [ y * linesize + x ] = dst [ ly * linesize + lx ] ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } clr = dst [ ly * linesize + lx ] ; break ; case 2 : while ( run -- > 0 ) { if ( y < 1 || y >= avctx -> height ) return AVERROR_INVALIDDATA ; clr = dst [ y * linesize + x + off + 1 ] ; dst [ y * linesize + x ] = clr ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } break ; case 4 : while ( run -- > 0 ) { uint8_t * odst = ( uint8_t * ) dst ; if ( y < 1 || y >= avctx -> height || ( y == 1 && x == 0 ) ) return AVERROR_INVALIDDATA ; if ( x == 0 ) { z = backstep ; } else { z = 0 ; } r = odst [ ( ly * linesize + lx ) * 4 ] + odst [ ( ( y * linesize + x ) + off - z ) * 4 + 4 ] - odst [ ( ( y * linesize + x ) + off - z ) * 4 ] ; g = odst [ ( ly * linesize + lx ) * 4 + 1 ] + odst [ ( ( y * linesize + x ) + off - z ) * 4 + 5 ] - odst [ ( ( y * linesize + x ) + off - z ) * 4 + 1 ] ; b = odst [ ( ly * linesize + lx ) * 4 + 2 ] + odst [ ( ( y * linesize + x ) + off - z ) * 4 + 6 ] - odst [ ( ( y * linesize + x ) + off - z ) * 4 + 2 ] ; clr = ( ( b & 0xFF ) << 16 ) + ( ( g & 0xFF ) << 8 ) + ( r & 0xFF ) ; dst [ y * linesize + x ] = clr ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } break ; case 5 : while ( run -- > 0 ) { if ( y < 1 || y >= avctx -> height || ( y == 1 && x == 0 ) ) return AVERROR_INVALIDDATA ; if ( x == 0 ) { z = backstep ; } else { z = 0 ; } clr = dst [ y * linesize + x + off - z ] ; dst [ y * linesize + x ] = clr ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } break ; } if ( avctx -> bits_per_coded_sample == 16 ) { cx1 = ( clr & 0x3F00 ) >> 2 ; cx = ( clr & 0xFFFFFF ) >> 16 ; } else { cx1 = ( clr & 0xFC00 ) >> 4 ; cx = ( clr & 0xFFFFFF ) >> 18 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( y >= avctx -> height ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0849\n\n```\nCWE-189 int sysMapFile ( const char * fn , MemMapping * pMap ) { memset ( pMap , 0 , sizeof ( * pMap ) ) ; if ( fn && fn [ 0 ] == '@' ) { FILE * mapf = fopen ( fn + 1 , \"r\" ) ; if ( mapf == NULL ) { LOGV ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>\\'%s\\':<S2SV_blank>%s\\\\n\" , fn + 1 , strerror ( errno ) ) ; return - 1 ; } if ( sysMapBlockFile ( mapf , pMap ) != 0 ) { LOGW ( \"Map<S2SV_blank>of<S2SV_blank>\\'%s\\'<S2SV_blank>failed\\\\n\" , fn ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } fclose ( mapf ) ; } else { int fd = open ( fn , O_RDONLY , 0 ) ; if ( fd < 0 ) { LOGE ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>\\'%s\\':<S2SV_blank>%s\\\\n\" , fn , strerror ( errno ) ) ; return - 1 ; } if ( sysMapFD ( fd , pMap ) != 0 ) { LOGE ( \"Map<S2SV_blank>of<S2SV_blank>\\'%s\\'<S2SV_blank>failed\\\\n\" , fn ) ; close ( fd ) ; return - 1 ; } close ( fd ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fn ) ; fclose ( mapf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 SNDFILE * sf_open_fd ( int fd , int mode , SF_INFO * sfinfo , int close_desc ) { SF_PRIVATE * psf ; if ( ( SF_CONTAINER ( sfinfo -> format ) ) == SF_FORMAT_SD2 ) { sf_errno = SFE_SD2_FD_DISALLOWED ; return NULL ; } ; <S2SV_StartBug> if ( ( psf = calloc ( 1 , sizeof ( SF_PRIVATE ) ) ) == NULL ) <S2SV_EndBug> { sf_errno = SFE_MALLOC_FAILED ; return NULL ; } ; psf_init_files ( psf ) ; copy_filename ( psf , \"\" ) ; psf -> file . mode = mode ; psf_set_file ( psf , fd ) ; psf -> is_pipe = psf_is_pipe ( psf ) ; psf -> fileoffset = psf_ftell ( psf ) ; if ( ! close_desc ) psf -> file . do_not_close_descriptor = SF_TRUE ; return psf_open_file ( psf , sfinfo ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( psf = psf_allocate ( <S2SV_ModEnd> ) ) ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20836\n\n```\nCWE-362 static void smp_task_timedout ( struct timer_list * t ) { struct sas_task_slow * slow = from_timer ( slow , t , timer ) ; struct sas_task * task = slow -> task ; unsigned long flags ; spin_lock_irqsave ( & task -> task_state_lock , flags ) ; <S2SV_StartBug> if ( ! ( task -> task_state_flags & SAS_TASK_STATE_DONE ) ) <S2SV_EndBug> <S2SV_StartBug> task -> task_state_flags |= SAS_TASK_STATE_ABORTED ; <S2SV_EndBug> spin_unlock_irqrestore ( & task -> task_state_lock , flags ) ; complete ( & task -> slow_task -> completion ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SAS_TASK_STATE_DONE ) ) { <S2SV_ModStart> task_state_flags |= SAS_TASK_STATE_ABORTED <S2SV_ModEnd> ; complete ( <S2SV_ModStart> ) ; } spin_unlock_irqrestore ( & task -> task_state_lock , flags ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1477\n\n```\nCWE-119 static void opl3_panning ( int dev , int voice , int value ) { <S2SV_StartBug> devc -> voc [ voice ] . panning = value ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) { if ( voice < 0 || voice >= devc -> nr_voice ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0281\n\n```\nCWE-399 static int cib_tls_close ( cib_t * cib ) { <S2SV_StartBug> cib_remote_opaque_t * private = cib -> variant_opaque ; <S2SV_EndBug> shutdown ( private -> command . socket , SHUT_RDWR ) ; shutdown ( private -> callback . socket , SHUT_RDWR ) ; close ( private -> command . socket ) ; close ( private -> callback . socket ) ; # ifdef HAVE_GNUTLS_GNUTLS_H if ( private -> command . encrypted ) { <S2SV_StartBug> gnutls_bye ( * ( private -> command . session ) , GNUTLS_SHUT_RDWR ) ; <S2SV_EndBug> gnutls_deinit ( * ( private -> command . session ) ) ; gnutls_free ( private -> command . session ) ; <S2SV_StartBug> gnutls_bye ( * ( private -> callback . session ) , GNUTLS_SHUT_RDWR ) ; <S2SV_EndBug> gnutls_deinit ( * ( private -> callback . session ) ) ; gnutls_free ( private -> callback . session ) ; <S2SV_StartBug> gnutls_anon_free_client_credentials ( anon_cred_c ) ; <S2SV_EndBug> <S2SV_StartBug> gnutls_global_deinit ( ) ; <S2SV_EndBug> } # endif <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cib -> variant_opaque <S2SV_ModEnd> ; # ifdef <S2SV_ModStart> encrypted ) { if ( private -> command . session ) { <S2SV_ModStart> session ) ; } if ( private -> callback . session ) { <S2SV_ModStart> session ) ; } private -> command . session = NULL ; private -> callback . session = NULL ; if ( remote_gnutls_credentials_init ) { <S2SV_ModStart> ( ) ; remote_gnutls_credentials_init = FALSE ; } <S2SV_ModStart> } # endif if ( private -> command . socket ) { shutdown ( private -> command . socket , SHUT_RDWR ) ; close ( private -> command . socket ) ; } if ( private -> callback . socket ) { shutdown ( private -> callback . socket , SHUT_RDWR ) ; close ( private -> callback . socket ) ; } private -> command . socket = 0 ; private -> callback . socket = 0 ; free ( private -> command . recv_buf ) ; free ( private -> callback . recv_buf ) ; private -> command . recv_buf = NULL ; private -> callback . recv_buf = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9588\n\n```\nCWE-388 static bool nested_vmx_exit_handled ( struct kvm_vcpu * vcpu ) { u32 intr_info = vmcs_read32 ( VM_EXIT_INTR_INFO ) ; struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; struct vmcs12 * vmcs12 = get_vmcs12 ( vcpu ) ; u32 exit_reason = vmx -> exit_reason ; trace_kvm_nested_vmexit ( kvm_rip_read ( vcpu ) , exit_reason , vmcs_readl ( EXIT_QUALIFICATION ) , vmx -> idt_vectoring_info , intr_info , vmcs_read32 ( VM_EXIT_INTR_ERROR_CODE ) , KVM_ISA_VMX ) ; if ( vmx -> nested . nested_run_pending ) return false ; if ( unlikely ( vmx -> fail ) ) { pr_info_ratelimited ( \"%s<S2SV_blank>failed<S2SV_blank>vm<S2SV_blank>entry<S2SV_blank>%x\\\\n\" , __func__ , vmcs_read32 ( VM_INSTRUCTION_ERROR ) ) ; return true ; } switch ( exit_reason ) { case EXIT_REASON_EXCEPTION_NMI : <S2SV_StartBug> if ( ! is_exception ( intr_info ) ) <S2SV_EndBug> return false ; else if ( is_page_fault ( intr_info ) ) return enable_ept ; else if ( is_no_device ( intr_info ) && ! ( vmcs12 -> guest_cr0 & X86_CR0_TS ) ) return false ; else if ( is_debug ( intr_info ) && vcpu -> guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) return false ; else if ( is_breakpoint ( intr_info ) && vcpu -> guest_debug & KVM_GUESTDBG_USE_SW_BP ) return false ; return vmcs12 -> exception_bitmap & ( 1u << ( intr_info & INTR_INFO_VECTOR_MASK ) ) ; case EXIT_REASON_EXTERNAL_INTERRUPT : return false ; case EXIT_REASON_TRIPLE_FAULT : return true ; case EXIT_REASON_PENDING_INTERRUPT : return nested_cpu_has ( vmcs12 , CPU_BASED_VIRTUAL_INTR_PENDING ) ; case EXIT_REASON_NMI_WINDOW : return nested_cpu_has ( vmcs12 , CPU_BASED_VIRTUAL_NMI_PENDING ) ; case EXIT_REASON_TASK_SWITCH : return true ; case EXIT_REASON_CPUID : if ( kvm_register_read ( vcpu , VCPU_REGS_RAX ) == 0xa ) return false ; return true ; case EXIT_REASON_HLT : return nested_cpu_has ( vmcs12 , CPU_BASED_HLT_EXITING ) ; case EXIT_REASON_INVD : return true ; case EXIT_REASON_INVLPG : return nested_cpu_has ( vmcs12 , CPU_BASED_INVLPG_EXITING ) ; case EXIT_REASON_RDPMC : return nested_cpu_has ( vmcs12 , CPU_BASED_RDPMC_EXITING ) ; case EXIT_REASON_RDTSC : case EXIT_REASON_RDTSCP : return nested_cpu_has ( vmcs12 , CPU_BASED_RDTSC_EXITING ) ; case EXIT_REASON_VMCALL : case EXIT_REASON_VMCLEAR : case EXIT_REASON_VMLAUNCH : case EXIT_REASON_VMPTRLD : case EXIT_REASON_VMPTRST : case EXIT_REASON_VMREAD : case EXIT_REASON_VMRESUME : case EXIT_REASON_VMWRITE : case EXIT_REASON_VMOFF : case EXIT_REASON_VMON : case EXIT_REASON_INVEPT : case EXIT_REASON_INVVPID : return true ; case EXIT_REASON_CR_ACCESS : return nested_vmx_exit_handled_cr ( vcpu , vmcs12 ) ; case EXIT_REASON_DR_ACCESS : return nested_cpu_has ( vmcs12 , CPU_BASED_MOV_DR_EXITING ) ; case EXIT_REASON_IO_INSTRUCTION : return nested_vmx_exit_handled_io ( vcpu , vmcs12 ) ; case EXIT_REASON_GDTR_IDTR : case EXIT_REASON_LDTR_TR : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_DESC ) ; case EXIT_REASON_MSR_READ : case EXIT_REASON_MSR_WRITE : return nested_vmx_exit_handled_msr ( vcpu , vmcs12 , exit_reason ) ; case EXIT_REASON_INVALID_STATE : return true ; case EXIT_REASON_MWAIT_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_MWAIT_EXITING ) ; case EXIT_REASON_MONITOR_TRAP_FLAG : return nested_cpu_has ( vmcs12 , CPU_BASED_MONITOR_TRAP_FLAG ) ; case EXIT_REASON_MONITOR_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_MONITOR_EXITING ) ; case EXIT_REASON_PAUSE_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_PAUSE_EXITING ) || nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_PAUSE_LOOP_EXITING ) ; case EXIT_REASON_MCE_DURING_VMENTRY : return false ; case EXIT_REASON_TPR_BELOW_THRESHOLD : return nested_cpu_has ( vmcs12 , CPU_BASED_TPR_SHADOW ) ; case EXIT_REASON_APIC_ACCESS : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES ) ; case EXIT_REASON_APIC_WRITE : case EXIT_REASON_EOI_INDUCED : return true ; case EXIT_REASON_EPT_VIOLATION : return false ; case EXIT_REASON_EPT_MISCONFIG : return false ; case EXIT_REASON_WBINVD : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_WBINVD_EXITING ) ; case EXIT_REASON_XSETBV : return true ; case EXIT_REASON_XSAVES : case EXIT_REASON_XRSTORS : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_XSAVES ) ; case EXIT_REASON_PREEMPTION_TIMER : return false ; default : return true ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( is_nmi <S2SV_ModEnd> ( intr_info )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int update_mv ( vp9_writer * w , const unsigned int ct [ 2 ] , vp9_prob * cur_p , <S2SV_EndBug> <S2SV_StartBug> vp9_prob upd_p ) { <S2SV_EndBug> <S2SV_StartBug> const vp9_prob new_p = get_binary_prob ( ct [ 0 ] , ct [ 1 ] ) | 1 ; <S2SV_EndBug> const int update = cost_branch256 ( ct , * cur_p ) + vp9_cost_zero ( upd_p ) > cost_branch256 ( ct , new_p ) + vp9_cost_one ( upd_p ) + 7 * 256 ; <S2SV_StartBug> vp9_write ( w , update , upd_p ) ; <S2SV_EndBug> if ( update ) { * cur_p = new_p ; <S2SV_StartBug> vp9_write_literal ( w , new_p >> 1 , 7 ) ; <S2SV_EndBug> } return update ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int update_mv ( vpx_writer <S2SV_ModEnd> * w , <S2SV_ModStart> 2 ] , vpx_prob <S2SV_ModEnd> * cur_p , <S2SV_ModStart> * cur_p , vpx_prob <S2SV_ModEnd> upd_p ) { <S2SV_ModStart> ) { const vpx_prob <S2SV_ModEnd> new_p = get_binary_prob <S2SV_ModStart> * 256 ; vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> = new_p ; vpx_write_literal <S2SV_ModEnd> ( w ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11219\n\n```\nCWE-190 static int b_unpack ( lua_State * L ) { Header h ; const char * fmt = luaL_checkstring ( L , 1 ) ; size_t ld ; const char * data = luaL_checklstring ( L , 2 , & ld ) ; size_t pos = luaL_optinteger ( L , 3 , 1 ) - 1 ; <S2SV_StartBug> defaultoptions ( & h ) ; <S2SV_EndBug> lua_settop ( L , 2 ) ; while ( * fmt ) { int opt = * fmt ++ ; size_t size = optsize ( L , opt , & fmt ) ; pos += gettoalign ( pos , & h , opt , size ) ; luaL_argcheck ( L , pos + size <= ld , 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\" ) ; <S2SV_StartBug> luaL_checkstack ( L , 1 , \"too<S2SV_blank>many<S2SV_blank>results\" ) ; <S2SV_EndBug> switch ( opt ) { case 'b' : case 'B' : case 'h' : case 'H' : case 'l' : case 'L' : case 'T' : case 'i' : case 'I' : { int issigned = islower ( opt ) ; lua_Number res = getinteger ( data + pos , h . endian , issigned , size ) ; <S2SV_StartBug> lua_pushnumber ( L , res ) ; <S2SV_EndBug> break ; } case 'x' : { break ; } case 'f' : { float f ; memcpy ( & f , data + pos , size ) ; correctbytes ( ( char * ) & f , sizeof ( f ) , h . endian ) ; <S2SV_StartBug> lua_pushnumber ( L , f ) ; <S2SV_EndBug> break ; } case 'd' : { double d ; memcpy ( & d , data + pos , size ) ; correctbytes ( ( char * ) & d , sizeof ( d ) , h . endian ) ; <S2SV_StartBug> lua_pushnumber ( L , d ) ; <S2SV_EndBug> break ; } case 'c' : { if ( size == 0 ) { <S2SV_StartBug> if ( ! lua_isnumber ( L , - 1 ) ) <S2SV_EndBug> <S2SV_StartBug> luaL_error ( L , \"format<S2SV_blank>`c0\\'<S2SV_blank>needs<S2SV_blank>a<S2SV_blank>previous<S2SV_blank>size\" ) ; <S2SV_EndBug> size = lua_tonumber ( L , - 1 ) ; <S2SV_StartBug> lua_pop ( L , 1 ) ; <S2SV_EndBug> <S2SV_StartBug> luaL_argcheck ( L , pos + size <= ld , 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\" ) ; <S2SV_EndBug> } <S2SV_StartBug> lua_pushlstring ( L , data + pos , size ) ; <S2SV_EndBug> break ; } case 's' : { const char * e = ( const char * ) memchr ( data + pos , '\\\\0' , ld - pos ) ; if ( e == NULL ) luaL_error ( L , \"unfinished<S2SV_blank>string<S2SV_blank>in<S2SV_blank>data\" ) ; size = ( e - ( data + pos ) ) + 1 ; <S2SV_StartBug> lua_pushlstring ( L , data + pos , size - 1 ) ; <S2SV_EndBug> break ; } default : controloptions ( L , opt , & fmt , & h ) ; } pos += size ; } lua_pushinteger ( L , pos + 1 ) ; <S2SV_StartBug> return lua_gettop ( L ) - 2 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - 1 ; int n = 0 ; <S2SV_ModStart> ( & h <S2SV_ModEnd> ) ; while <S2SV_ModStart> ( L , 2 <S2SV_ModEnd> , \"too<S2SV_blank>many<S2SV_blank>results\" ) <S2SV_ModStart> res ) ; n ++ ; <S2SV_ModStart> f ) ; n ++ ; <S2SV_ModStart> d ) ; n ++ ; <S2SV_ModStart> { if ( n == 0 || <S2SV_ModStart> ( L , \"format<S2SV_blank>\\'c0\\'<S2SV_blank>needs<S2SV_blank>a<S2SV_blank>previous<S2SV_blank>size\" <S2SV_ModEnd> ) ; size <S2SV_ModStart> 1 ) ; n -- ; <S2SV_ModStart> ( L , <S2SV_ModEnd> size <= ld <S2SV_ModStart> size <= ld && pos <= ld - size , <S2SV_ModEnd> 2 , \"data<S2SV_blank>string<S2SV_blank>too<S2SV_blank>short\" <S2SV_ModStart> , size ) ; n ++ <S2SV_ModStart> 1 ) ; n ++ ; <S2SV_ModStart> ) ; return n + 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-824(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14356\n\n```\nCWE-824 static int fetch_uidl ( char * line , void * data ) { int i , index ; struct Context * ctx = ( struct Context * ) data ; struct PopData * pop_data = ( struct PopData * ) ctx -> data ; char * endp = NULL ; errno = 0 ; index = strtol ( line , & endp , 10 ) ; if ( errno ) return - 1 ; while ( * endp == '<S2SV_blank>' ) endp ++ ; memmove ( line , endp , strlen ( endp ) + 1 ) ; <S2SV_StartBug> for ( i = 0 ; i < ctx -> msgcount ; i ++ ) <S2SV_EndBug> if ( mutt_str_strcmp ( line , ctx -> hdrs [ i ] -> data ) == 0 ) break ; if ( i == ctx -> msgcount ) { mutt_debug ( 1 , \"new<S2SV_blank>header<S2SV_blank>%d<S2SV_blank>%s\\\\n\" , index , line ) ; if ( i >= ctx -> hdrmax ) mx_alloc_memory ( ctx ) ; ctx -> msgcount ++ ; ctx -> hdrs [ i ] = mutt_header_new ( ) ; ctx -> hdrs [ i ] -> data = mutt_str_strdup ( line ) ; } else if ( ctx -> hdrs [ i ] -> index != index - 1 ) pop_data -> clear_cache = true ; ctx -> hdrs [ i ] -> refno = index ; ctx -> hdrs [ i ] -> index = index - 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( strlen ( line ) == 0 ) return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-191(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10166\n\n```\nCWE-191 static inline LineContribType * _gdContributionsAlloc ( unsigned int line_length , unsigned int windows_size ) { unsigned int u = 0 ; LineContribType * res ; <S2SV_StartBug> int overflow_error = 0 ; <S2SV_EndBug> <S2SV_StartBug> res = ( LineContribType * ) gdMalloc ( sizeof ( LineContribType ) ) ; <S2SV_EndBug> if ( ! res ) { return NULL ; } res -> WindowSize = windows_size ; res -> LineLength = line_length ; if ( overflow2 ( line_length , sizeof ( ContributionType ) ) ) { gdFree ( res ) ; return NULL ; } res -> ContribRow = ( ContributionType * ) gdMalloc ( line_length * sizeof ( ContributionType ) ) ; if ( res -> ContribRow == NULL ) { gdFree ( res ) ; return NULL ; } <S2SV_StartBug> for ( u = 0 ; u < line_length ; u ++ ) { <S2SV_EndBug> if ( overflow2 ( windows_size , sizeof ( double ) ) ) { overflow_error = 1 ; } else { <S2SV_StartBug> res -> ContribRow [ u ] . Weights = ( double * ) gdMalloc ( windows_size * sizeof ( double ) ) ; <S2SV_EndBug> } if ( overflow_error == 1 || res -> ContribRow [ u ] . Weights == NULL ) { unsigned int i ; <S2SV_StartBug> u -- ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i <= u ; i ++ ) { <S2SV_EndBug> gdFree ( res -> ContribRow [ i ] . Weights ) ; } gdFree ( res -> ContribRow ) ; gdFree ( res ) ; return NULL ; } } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * res ; size_t weights_size ; if ( overflow2 ( windows_size , sizeof ( double ) ) ) { return NULL ; } else { weights_size = windows_size * sizeof ( double ) ; } res = ( LineContribType * ) gdMalloc ( sizeof ( LineContribType ) ) ; if ( ! res ) { return NULL ; } res -> WindowSize = windows_size ; res -> LineLength = line_length ; if ( overflow2 ( line_length , sizeof ( ContributionType ) ) ) { gdFree ( res ) ; return NULL ; } res -> ContribRow = ( ContributionType * ) gdMalloc ( line_length * sizeof ( ContributionType ) ) ; if ( res -> ContribRow == NULL ) { gdFree ( res ) ; return NULL ; } for ( u <S2SV_ModEnd> = 0 ; <S2SV_ModStart> = 0 ; <S2SV_ModEnd> u < line_length <S2SV_ModStart> u ++ ) <S2SV_ModEnd> { res -> <S2SV_ModStart> ) gdMalloc ( weights_size ) ; if ( <S2SV_ModEnd> res -> ContribRow <S2SV_ModStart> int i ; <S2SV_ModEnd> for ( i <S2SV_ModStart> 0 ; i < <S2SV_ModEnd> u ; i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 static void bump_cpu_timer ( struct k_itimer * timer , u64 now ) { int i ; u64 delta , incr ; if ( timer -> it . cpu . incr == 0 ) return ; if ( now < timer -> it . cpu . expires ) return ; incr = timer -> it . cpu . incr ; delta = now + incr - timer -> it . cpu . expires ; for ( i = 0 ; incr < delta - incr ; i ++ ) incr = incr << 1 ; for ( ; i >= 0 ; incr >>= 1 , i -- ) { if ( delta < incr ) continue ; timer -> it . cpu . expires += incr ; <S2SV_StartBug> timer -> it_overrun += 1 << i ; <S2SV_EndBug> delta -= incr ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> it_overrun += 1LL <S2SV_ModEnd> << i ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int check_cond_jmp_op ( struct bpf_verifier_env * env , struct bpf_insn * insn , int * insn_idx ) { struct bpf_verifier_state * this_branch = env -> cur_state ; struct bpf_verifier_state * other_branch ; struct bpf_reg_state * regs = this_branch -> frame [ this_branch -> curframe ] -> regs ; struct bpf_reg_state * dst_reg , * other_branch_regs ; u8 opcode = BPF_OP ( insn -> code ) ; int err ; if ( opcode > BPF_JSLE ) { verbose ( env , \"invalid<S2SV_blank>BPF_JMP<S2SV_blank>opcode<S2SV_blank>%x\\\\n\" , opcode ) ; return - EINVAL ; } if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 ) { verbose ( env , \"BPF_JMP<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , insn -> src_reg ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>comparison<S2SV_blank>prohibited\\\\n\" , insn -> src_reg ) ; return - EACCES ; } } else { if ( insn -> src_reg != BPF_REG_0 ) { verbose ( env , \"BPF_JMP<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; dst_reg = & regs [ insn -> dst_reg ] ; if ( BPF_SRC ( insn -> code ) == BPF_K ) { int pred = is_branch_taken ( dst_reg , insn -> imm , opcode ) ; if ( pred == 1 ) { * insn_idx += insn -> off ; return 0 ; } else if ( pred == 0 ) { return 0 ; } } <S2SV_StartBug> other_branch = push_stack ( env , * insn_idx + insn -> off + 1 , * insn_idx ) ; <S2SV_EndBug> if ( ! other_branch ) return - EFAULT ; other_branch_regs = other_branch -> frame [ other_branch -> curframe ] -> regs ; if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( dst_reg -> type == SCALAR_VALUE && regs [ insn -> src_reg ] . type == SCALAR_VALUE ) { if ( tnum_is_const ( regs [ insn -> src_reg ] . var_off ) ) reg_set_min_max ( & other_branch_regs [ insn -> dst_reg ] , dst_reg , regs [ insn -> src_reg ] . var_off . value , opcode ) ; else if ( tnum_is_const ( dst_reg -> var_off ) ) reg_set_min_max_inv ( & other_branch_regs [ insn -> src_reg ] , & regs [ insn -> src_reg ] , dst_reg -> var_off . value , opcode ) ; else if ( opcode == BPF_JEQ || opcode == BPF_JNE ) reg_combine_min_max ( & other_branch_regs [ insn -> src_reg ] , & other_branch_regs [ insn -> dst_reg ] , & regs [ insn -> src_reg ] , & regs [ insn -> dst_reg ] , opcode ) ; } } else if ( dst_reg -> type == SCALAR_VALUE ) { reg_set_min_max ( & other_branch_regs [ insn -> dst_reg ] , dst_reg , insn -> imm , opcode ) ; } if ( BPF_SRC ( insn -> code ) == BPF_K && insn -> imm == 0 && ( opcode == BPF_JEQ || opcode == BPF_JNE ) && reg_type_may_be_null ( dst_reg -> type ) ) { mark_ptr_or_null_regs ( this_branch , insn -> dst_reg , opcode == BPF_JNE ) ; mark_ptr_or_null_regs ( other_branch , insn -> dst_reg , opcode == BPF_JEQ ) ; } else if ( ! try_match_pkt_pointers ( insn , dst_reg , & regs [ insn -> src_reg ] , this_branch , other_branch ) && is_pointer_value ( env , insn -> dst_reg ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>comparison<S2SV_blank>prohibited\\\\n\" , insn -> dst_reg ) ; return - EACCES ; } if ( env -> log . level ) print_verifier_state ( env , this_branch -> frame [ this_branch -> curframe ] ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * insn_idx , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2007-6761\n\n```\nCWE-119 static int __videobuf_mmap_mapper ( struct videobuf_queue * q , struct vm_area_struct * vma ) { struct videbuf_vmalloc_memory * mem ; struct videobuf_mapping * map ; unsigned int first ; int retval ; unsigned long offset = vma -> vm_pgoff << PAGE_SHIFT ; if ( ! ( vma -> vm_flags & VM_WRITE ) || ! ( vma -> vm_flags & VM_SHARED ) ) return - EINVAL ; for ( first = 0 ; first < VIDEO_MAX_FRAME ; first ++ ) { if ( NULL == q -> bufs [ first ] ) continue ; if ( V4L2_MEMORY_MMAP != q -> bufs [ first ] -> memory ) continue ; if ( q -> bufs [ first ] -> boff == offset ) break ; } if ( VIDEO_MAX_FRAME == first ) { dprintk ( 1 , \"mmap<S2SV_blank>app<S2SV_blank>bug:<S2SV_blank>offset<S2SV_blank>invalid<S2SV_blank>[offset=0x%lx]\\\\n\" , ( vma -> vm_pgoff << PAGE_SHIFT ) ) ; return - EINVAL ; } <S2SV_StartBug> map = q -> bufs [ first ] -> map = kmalloc ( sizeof ( struct videobuf_mapping ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( NULL == map ) return - ENOMEM ; map -> start = vma -> vm_start ; map -> end = vma -> vm_end ; map -> q = q ; q -> bufs [ first ] -> baddr = vma -> vm_start ; vma -> vm_ops = & videobuf_vm_ops ; vma -> vm_flags |= VM_DONTEXPAND | VM_RESERVED ; vma -> vm_private_data = map ; mem = q -> bufs [ first ] -> priv ; BUG_ON ( ! mem ) ; MAGIC_CHECK ( mem -> magic , MAGIC_VMAL_MEM ) ; retval = remap_vmalloc_range ( vma , mem -> vmalloc , 0 ) ; if ( retval < 0 ) { dprintk ( 1 , \"mmap:<S2SV_blank>postponing<S2SV_blank>remap_vmalloc_range\\\\n\" ) ; mem -> vma = kmalloc ( sizeof ( * vma ) , GFP_KERNEL ) ; if ( ! mem -> vma ) { kfree ( map ) ; q -> bufs [ first ] -> map = NULL ; return - ENOMEM ; } memcpy ( mem -> vma , vma , sizeof ( * vma ) ) ; } dprintk ( 1 , \"mmap<S2SV_blank>%p:<S2SV_blank>q=%p<S2SV_blank>%08lx-%08lx<S2SV_blank>(%lx)<S2SV_blank>pgoff<S2SV_blank>%08lx<S2SV_blank>buf<S2SV_blank>%d\\\\n\" , map , q , vma -> vm_start , vma -> vm_end , ( long int ) q -> bufs [ first ] -> bsize , vma -> vm_pgoff , first ) ; videobuf_vm_open ( vma ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> map = kzalloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-1155\n\n```\nCWE-20 static void server_real_connect ( SERVER_REC * server , IPADDR * ip , const char * unix_socket ) { GIOChannel * handle ; IPADDR * own_ip = NULL ; const char * errmsg ; char * errmsg2 ; char ipaddr [ MAX_IP_LEN ] ; int port ; g_return_if_fail ( ip != NULL || unix_socket != NULL ) ; signal_emit ( \"server<S2SV_blank>connecting\" , 2 , server , ip ) ; if ( server -> connrec -> no_connect ) return ; if ( ip != NULL ) { own_ip = ip == NULL ? NULL : ( IPADDR_IS_V6 ( ip ) ? server -> connrec -> own_ip6 : server -> connrec -> own_ip4 ) ; port = server -> connrec -> proxy != NULL ? server -> connrec -> proxy_port : server -> connrec -> port ; handle = server -> connrec -> use_ssl ? <S2SV_StartBug> net_connect_ip_ssl ( ip , port , own_ip , server -> connrec -> ssl_cert , server -> connrec -> ssl_pkey , <S2SV_EndBug> server -> connrec -> ssl_cafile , server -> connrec -> ssl_capath , server -> connrec -> ssl_verify ) : net_connect_ip ( ip , port , own_ip ) ; } else { handle = net_connect_unix ( unix_socket ) ; } if ( handle == NULL ) { errmsg = g_strerror ( errno ) ; errmsg2 = NULL ; if ( errno == EADDRNOTAVAIL ) { if ( own_ip != NULL ) { net_ip2host ( own_ip , ipaddr ) ; errmsg2 = g_strconcat ( errmsg , \":<S2SV_blank>\" , ipaddr , NULL ) ; } server -> no_reconnect = TRUE ; } if ( server -> connrec -> use_ssl && errno == ENOSYS ) server -> no_reconnect = TRUE ; server -> connection_lost = TRUE ; server_connect_failed ( server , errmsg2 ? errmsg2 : errmsg ) ; g_free ( errmsg2 ) ; } else { server -> handle = net_sendbuffer_create ( handle , 0 ) ; # ifdef HAVE_OPENSSL if ( server -> connrec -> use_ssl ) server_connect_callback_init_ssl ( server , handle ) ; else # endif server -> connect_tag = g_input_add ( handle , G_INPUT_WRITE | G_INPUT_READ , ( GInputFunction ) server_connect_callback_init , server ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , port , server -> connrec -> address ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12735\n\n```\nCWE-78 void openscript ( char_u * name , int directly ) { if ( curscript + 1 == NSCRIPT ) { emsg ( _ ( e_nesting ) ) ; return ; <S2SV_StartBug> } <S2SV_EndBug> # ifdef FEAT_EVAL if ( ignore_script ) return ; # endif if ( scriptin [ curscript ] != NULL ) ++ curscript ; expand_env ( name , NameBuff , MAXPATHL ) ; if ( ( scriptin [ curscript ] = mch_fopen ( ( char * ) NameBuff , READBIN ) ) == NULL ) { semsg ( _ ( e_notopen ) , name ) ; if ( curscript ) -- curscript ; return ; } if ( save_typebuf ( ) == FAIL ) return ; if ( directly ) { oparg_T oa ; int oldcurscript ; int save_State = State ; int save_restart_edit = restart_edit ; int save_insertmode = p_im ; int save_finish_op = finish_op ; int save_msg_scroll = msg_scroll ; State = NORMAL ; msg_scroll = FALSE ; restart_edit = 0 ; p_im = FALSE ; clear_oparg ( & oa ) ; finish_op = FALSE ; oldcurscript = curscript ; do { update_topline_cursor ( ) ; normal_cmd ( & oa , FALSE ) ; vpeekc ( ) ; } while ( scriptin [ oldcurscript ] != NULL ) ; State = save_State ; msg_scroll = save_msg_scroll ; restart_edit = save_restart_edit ; p_im = save_insertmode ; finish_op = save_finish_op ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } if ( check_secure ( ) ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void write_segment_id ( vp9_writer * w , const struct segmentation * seg , <S2SV_EndBug> int segment_id ) { if ( seg -> enabled && seg -> update_map ) vp9_write_tree ( w , vp9_segment_tree , seg -> tree_probs , segment_id , 3 , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void write_segment_id ( vpx_writer <S2SV_ModEnd> * w ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-29279\n\n```\nCWE-787 GF_Err flac_dmx_process ( GF_Filter * filter ) { GF_FLACDmxCtx * ctx = gf_filter_get_udta ( filter ) ; GF_FilterPacket * pck , * dst_pck ; u8 * output ; u8 * start ; Bool final_flush = GF_FALSE ; u32 pck_size , remain , prev_pck_size ; u64 cts = GF_FILTER_NO_TS ; <S2SV_StartBug> FLACHeader hdr ; <S2SV_EndBug> if ( ! ctx -> duration . num ) flac_dmx_check_dur ( filter , ctx ) ; if ( ctx -> opid && ! ctx -> is_playing ) return GF_OK ; pck = gf_filter_pid_get_packet ( ctx -> ipid ) ; if ( ! pck ) { if ( gf_filter_pid_is_eos ( ctx -> ipid ) ) { if ( ! ctx -> flac_buffer_size ) { if ( ctx -> opid ) gf_filter_pid_set_eos ( ctx -> opid ) ; if ( ctx -> src_pck ) gf_filter_pck_unref ( ctx -> src_pck ) ; ctx -> src_pck = NULL ; return GF_EOS ; } final_flush = GF_TRUE ; } else { return GF_OK ; } } prev_pck_size = ctx -> flac_buffer_size ; if ( pck && ! ctx -> resume_from ) { u8 * data = ( u8 * ) gf_filter_pck_get_data ( pck , & pck_size ) ; if ( ctx -> byte_offset != GF_FILTER_NO_BO ) { u64 byte_offset = gf_filter_pck_get_byte_offset ( pck ) ; if ( ! ctx -> flac_buffer_size ) { ctx -> byte_offset = byte_offset ; } else if ( ctx -> byte_offset + ctx -> flac_buffer_size != byte_offset ) { ctx -> byte_offset = GF_FILTER_NO_BO ; if ( ( byte_offset != GF_FILTER_NO_BO ) && ( byte_offset > ctx -> flac_buffer_size ) ) { ctx -> byte_offset = byte_offset - ctx -> flac_buffer_size ; } } } if ( ctx -> flac_buffer_size + pck_size > ctx -> flac_buffer_alloc ) { ctx -> flac_buffer_alloc = ctx -> flac_buffer_size + pck_size ; ctx -> flac_buffer = gf_realloc ( ctx -> flac_buffer , ctx -> flac_buffer_alloc ) ; } memcpy ( ctx -> flac_buffer + ctx -> flac_buffer_size , data , pck_size ) ; ctx -> flac_buffer_size += pck_size ; } if ( ctx -> timescale && pck ) { cts = gf_filter_pck_get_cts ( pck ) ; } if ( cts == GF_FILTER_NO_TS ) { prev_pck_size = 0 ; } remain = ctx -> flac_buffer_size ; start = ctx -> flac_buffer ; if ( ctx -> resume_from ) { start += ctx -> resume_from - 1 ; remain -= ctx -> resume_from - 1 ; ctx -> resume_from = 0 ; } while ( remain > 2 ) { u32 next_frame = 0 , nb_samp ; u32 cur_size = remain - 2 ; u8 * cur_buf = start + 2 ; u8 * hdr_start = NULL ; if ( final_flush ) { next_frame = remain ; } else { while ( cur_size ) { hdr_start = memchr ( cur_buf , 0xFF , cur_size ) ; if ( ! hdr_start ) break ; next_frame = ( u32 ) ( hdr_start - start ) ; if ( next_frame == remain ) break ; if ( ( hdr_start [ 1 ] & 0xFC ) == 0xF8 ) { if ( flac_parse_header ( ctx , hdr_start , ( u32 ) remain - next_frame , & hdr ) ) break ; } cur_buf = hdr_start + 1 ; cur_size = ( u32 ) ( cur_buf - start ) ; assert ( cur_size <= remain ) ; cur_size = remain - cur_size ; hdr_start = NULL ; } if ( ! hdr_start ) break ; if ( next_frame == remain ) break ; } if ( ! ctx -> initialized ) { u32 size = next_frame ; u32 dsi_end = 0 ; gf_bs_reassign_buffer ( ctx -> bs , ctx -> flac_buffer , size ) ; u32 magic = gf_bs_read_u32 ( ctx -> bs ) ; if ( magic != GF_4CC ( 'f' , 'L' , 'a' , 'C' ) ) { <S2SV_StartBug> } <S2SV_EndBug> while ( gf_bs_available ( ctx -> bs ) ) { Bool last = gf_bs_read_int ( ctx -> bs , 1 ) ; u32 type = gf_bs_read_int ( ctx -> bs , 7 ) ; u32 len = gf_bs_read_int ( ctx -> bs , 24 ) ; if ( type == 0 ) { u16 min_block_size = gf_bs_read_u16 ( ctx -> bs ) ; u16 max_block_size = gf_bs_read_u16 ( ctx -> bs ) ; gf_bs_read_u24 ( ctx -> bs ) ; gf_bs_read_u24 ( ctx -> bs ) ; ctx -> sample_rate = gf_bs_read_int ( ctx -> bs , 20 ) ; ctx -> nb_channels = 1 + gf_bs_read_int ( ctx -> bs , 3 ) ; ctx -> bits_per_sample = 1 + gf_bs_read_int ( ctx -> bs , 5 ) ; if ( min_block_size == max_block_size ) ctx -> block_size = min_block_size ; else ctx -> block_size = 0 ; ctx -> duration . num = gf_bs_read_long_int ( ctx -> bs , 36 ) ; ctx -> duration . den = ctx -> sample_rate ; gf_bs_skip_bytes ( ctx -> bs , 16 ) ; dsi_end = ( u32 ) gf_bs_get_position ( ctx -> bs ) ; } else { gf_bs_skip_bytes ( ctx -> bs , len ) ; } <S2SV_StartBug> if ( last ) break ; <S2SV_EndBug> } flac_dmx_check_pid ( filter , ctx , ctx -> flac_buffer + 4 , dsi_end - 4 ) ; remain -= size ; start += size ; ctx -> initialized = GF_TRUE ; if ( ! ctx -> is_playing ) break ; continue ; } if ( ( start [ 0 ] != 0xFF ) && ( ( start [ 1 ] & 0xFC ) != 0xF8 ) ) { GF_LOG ( GF_LOG_WARNING , GF_LOG_PARSER , ( \"[FLACDmx]<S2SV_blank>invalid<S2SV_blank>frame,<S2SV_blank>droping<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>and<S2SV_blank>resyncing\\\\n\" , next_frame ) ) ; start += next_frame ; remain -= next_frame ; continue ; } flac_parse_header ( ctx , start , next_frame , & hdr ) ; if ( hdr . sample_rate != ctx -> sample_rate ) { ctx -> sample_rate = hdr . sample_rate ; gf_filter_pid_set_property ( ctx -> opid , GF_PROP_PID_SAMPLE_RATE , & PROP_UINT ( ctx -> sample_rate ) ) ; } nb_samp = hdr . block_size ; if ( ctx -> in_seek ) { u64 nb_samples_at_seek = ( u64 ) ( ctx -> start_range * ctx -> sample_rate ) ; if ( ctx -> cts + nb_samp >= nb_samples_at_seek ) { ctx -> in_seek = GF_FALSE ; } } if ( ctx -> timescale && ! prev_pck_size && ( cts != GF_FILTER_NO_TS ) ) { ctx -> cts = cts ; cts = GF_FILTER_NO_TS ; } if ( ! ctx -> in_seek ) { dst_pck = gf_filter_pck_new_alloc ( ctx -> opid , next_frame , & output ) ; memcpy ( output , start , next_frame ) ; gf_filter_pck_set_cts ( dst_pck , ctx -> cts ) ; if ( ! ctx -> timescale || ( ctx -> timescale == ctx -> sample_rate ) ) gf_filter_pck_set_duration ( dst_pck , nb_samp ) ; else { gf_filter_pck_set_duration ( dst_pck , ( nb_samp * ctx -> timescale ) / ctx -> sample_rate ) ; } gf_filter_pck_set_sap ( dst_pck , GF_FILTER_SAP_1 ) ; gf_filter_pck_set_framing ( dst_pck , GF_TRUE , GF_TRUE ) ; if ( ctx -> byte_offset != GF_FILTER_NO_BO ) { gf_filter_pck_set_byte_offset ( dst_pck , ctx -> byte_offset ) ; } gf_filter_pck_send ( dst_pck ) ; } flac_dmx_update_cts ( ctx , nb_samp ) ; assert ( start [ 0 ] == 0xFF ) ; assert ( ( start [ 1 ] & 0xFC ) == 0xF8 ) ; start += next_frame ; assert ( remain >= next_frame ) ; remain -= next_frame ; } if ( ! pck ) { ctx -> flac_buffer_size = 0 ; return flac_dmx_process ( filter ) ; } else { if ( remain < ctx -> flac_buffer_size ) { memmove ( ctx -> flac_buffer , start , remain ) ; } ctx -> flac_buffer_size = remain ; gf_filter_pid_drop_packet ( ctx -> ipid ) ; } return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; FLACHeader hdr ; if ( ctx -> in_error ) return GF_NON_COMPLIANT_BITSTREAM <S2SV_ModStart> ) ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_PARSER , ( \"[FLACDmx]<S2SV_blank>invalid<S2SV_blank>FLAC<S2SV_blank>magic\\\\n\" ) ) ; ctx -> in_error = GF_TRUE ; ctx -> flac_buffer_size = 0 ; if ( pck ) gf_filter_pid_drop_packet ( ctx -> ipid ) ; return GF_NON_COMPLIANT_BITSTREAM ; <S2SV_ModStart> last ) break ; } if ( ! dsi_end ) { GF_LOG ( GF_LOG_ERROR , GF_LOG_PARSER , ( \"[FLACDmx]<S2SV_blank>invalid<S2SV_blank>FLAC<S2SV_blank>header\\\\n\" ) ) ; ctx -> in_error = GF_TRUE ; ctx -> flac_buffer_size = 0 ; if ( pck ) gf_filter_pid_drop_packet ( ctx -> ipid ) ; return GF_NON_COMPLIANT_BITSTREAM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1858\n\n```\nCWE-264 static struct task_struct * copy_process ( unsigned long clone_flags , unsigned long stack_start , unsigned long stack_size , int __user * child_tidptr , struct pid * pid , int trace ) { int retval ; struct task_struct * p ; if ( ( clone_flags & ( CLONE_NEWNS | CLONE_FS ) ) == ( CLONE_NEWNS | CLONE_FS ) ) return ERR_PTR ( - EINVAL ) ; <S2SV_StartBug> if ( ( clone_flags & CLONE_THREAD ) && ! ( clone_flags & CLONE_SIGHAND ) ) <S2SV_EndBug> return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_SIGHAND ) && ! ( clone_flags & CLONE_VM ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_PARENT ) && current -> signal -> flags & SIGNAL_UNKILLABLE ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & ( CLONE_VM | CLONE_NEWPID ) ) && ( task_active_pid_ns ( current ) != current -> nsproxy -> pid_ns ) ) return ERR_PTR ( - EINVAL ) ; retval = security_task_create ( clone_flags ) ; if ( retval ) goto fork_out ; retval = - ENOMEM ; p = dup_task_struct ( current ) ; if ( ! p ) goto fork_out ; ftrace_graph_init_task ( p ) ; get_seccomp_filter ( p ) ; rt_mutex_init_task ( p ) ; # ifdef CONFIG_PROVE_LOCKING DEBUG_LOCKS_WARN_ON ( ! p -> hardirqs_enabled ) ; DEBUG_LOCKS_WARN_ON ( ! p -> softirqs_enabled ) ; # endif retval = - EAGAIN ; if ( atomic_read ( & p -> real_cred -> user -> processes ) >= task_rlimit ( p , RLIMIT_NPROC ) ) { if ( ! capable ( CAP_SYS_ADMIN ) && ! capable ( CAP_SYS_RESOURCE ) && p -> real_cred -> user != INIT_USER ) goto bad_fork_free ; } current -> flags &= ~ PF_NPROC_EXCEEDED ; retval = copy_creds ( p , clone_flags ) ; if ( retval < 0 ) goto bad_fork_free ; retval = - EAGAIN ; if ( nr_threads >= max_threads ) goto bad_fork_cleanup_count ; if ( ! try_module_get ( task_thread_info ( p ) -> exec_domain -> module ) ) goto bad_fork_cleanup_count ; p -> did_exec = 0 ; delayacct_tsk_init ( p ) ; copy_flags ( clone_flags , p ) ; INIT_LIST_HEAD ( & p -> children ) ; INIT_LIST_HEAD ( & p -> sibling ) ; rcu_copy_process ( p ) ; p -> vfork_done = NULL ; spin_lock_init ( & p -> alloc_lock ) ; init_sigpending ( & p -> pending ) ; p -> utime = p -> stime = p -> gtime = 0 ; p -> utimescaled = p -> stimescaled = 0 ; # ifndef CONFIG_VIRT_CPU_ACCOUNTING p -> prev_cputime . utime = p -> prev_cputime . stime = 0 ; # endif # ifdef CONFIG_VIRT_CPU_ACCOUNTING_GEN seqlock_init ( & p -> vtime_seqlock ) ; p -> vtime_snap = 0 ; p -> vtime_snap_whence = VTIME_SLEEPING ; # endif # if defined ( SPLIT_RSS_COUNTING ) memset ( & p -> rss_stat , 0 , sizeof ( p -> rss_stat ) ) ; # endif p -> default_timer_slack_ns = current -> timer_slack_ns ; task_io_accounting_init ( & p -> ioac ) ; acct_clear_integrals ( p ) ; posix_cpu_timers_init ( p ) ; do_posix_clock_monotonic_gettime ( & p -> start_time ) ; p -> real_start_time = p -> start_time ; monotonic_to_bootbased ( & p -> real_start_time ) ; p -> io_context = NULL ; p -> audit_context = NULL ; if ( clone_flags & CLONE_THREAD ) threadgroup_change_begin ( current ) ; cgroup_fork ( p ) ; # ifdef CONFIG_NUMA p -> mempolicy = mpol_dup ( p -> mempolicy ) ; if ( IS_ERR ( p -> mempolicy ) ) { retval = PTR_ERR ( p -> mempolicy ) ; p -> mempolicy = NULL ; goto bad_fork_cleanup_cgroup ; } mpol_fix_fork_child_flag ( p ) ; # endif # ifdef CONFIG_CPUSETS p -> cpuset_mem_spread_rotor = NUMA_NO_NODE ; p -> cpuset_slab_spread_rotor = NUMA_NO_NODE ; seqcount_init ( & p -> mems_allowed_seq ) ; # endif # ifdef CONFIG_TRACE_IRQFLAGS p -> irq_events = 0 ; p -> hardirqs_enabled = 0 ; p -> hardirq_enable_ip = 0 ; p -> hardirq_enable_event = 0 ; p -> hardirq_disable_ip = _THIS_IP_ ; p -> hardirq_disable_event = 0 ; p -> softirqs_enabled = 1 ; p -> softirq_enable_ip = _THIS_IP_ ; p -> softirq_enable_event = 0 ; p -> softirq_disable_ip = 0 ; p -> softirq_disable_event = 0 ; p -> hardirq_context = 0 ; p -> softirq_context = 0 ; # endif # ifdef CONFIG_LOCKDEP p -> lockdep_depth = 0 ; p -> curr_chain_key = 0 ; p -> lockdep_recursion = 0 ; # endif # ifdef CONFIG_DEBUG_MUTEXES p -> blocked_on = NULL ; # endif # ifdef CONFIG_MEMCG p -> memcg_batch . do_batch = 0 ; p -> memcg_batch . memcg = NULL ; # endif sched_fork ( p ) ; retval = perf_event_init_task ( p ) ; if ( retval ) goto bad_fork_cleanup_policy ; retval = audit_alloc ( p ) ; if ( retval ) goto bad_fork_cleanup_policy ; retval = copy_semundo ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_audit ; retval = copy_files ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_semundo ; retval = copy_fs ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_files ; retval = copy_sighand ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_fs ; retval = copy_signal ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_sighand ; retval = copy_mm ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_signal ; retval = copy_namespaces ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_mm ; retval = copy_io ( clone_flags , p ) ; if ( retval ) goto bad_fork_cleanup_namespaces ; retval = copy_thread ( clone_flags , stack_start , stack_size , p ) ; if ( retval ) goto bad_fork_cleanup_io ; if ( pid != & init_struct_pid ) { retval = - ENOMEM ; pid = alloc_pid ( p -> nsproxy -> pid_ns ) ; if ( ! pid ) goto bad_fork_cleanup_io ; } p -> pid = pid_nr ( pid ) ; p -> tgid = p -> pid ; if ( clone_flags & CLONE_THREAD ) p -> tgid = current -> tgid ; p -> set_child_tid = ( clone_flags & CLONE_CHILD_SETTID ) ? child_tidptr : NULL ; p -> clear_child_tid = ( clone_flags & CLONE_CHILD_CLEARTID ) ? child_tidptr : NULL ; # ifdef CONFIG_BLOCK p -> plug = NULL ; # endif # ifdef CONFIG_FUTEX p -> robust_list = NULL ; # ifdef CONFIG_COMPAT p -> compat_robust_list = NULL ; # endif INIT_LIST_HEAD ( & p -> pi_state_list ) ; p -> pi_state_cache = NULL ; # endif uprobe_copy_process ( p ) ; if ( ( clone_flags & ( CLONE_VM | CLONE_VFORK ) ) == CLONE_VM ) p -> sas_ss_sp = p -> sas_ss_size = 0 ; user_disable_single_step ( p ) ; clear_tsk_thread_flag ( p , TIF_SYSCALL_TRACE ) ; # ifdef TIF_SYSCALL_EMU clear_tsk_thread_flag ( p , TIF_SYSCALL_EMU ) ; # endif clear_all_latency_tracing ( p ) ; if ( clone_flags & CLONE_THREAD ) p -> exit_signal = - 1 ; else if ( clone_flags & CLONE_PARENT ) p -> exit_signal = current -> group_leader -> exit_signal ; else p -> exit_signal = ( clone_flags & CSIGNAL ) ; p -> pdeath_signal = 0 ; p -> exit_state = 0 ; p -> nr_dirtied = 0 ; p -> nr_dirtied_pause = 128 >> ( PAGE_SHIFT - 10 ) ; p -> dirty_paused_when = 0 ; p -> group_leader = p ; INIT_LIST_HEAD ( & p -> thread_group ) ; p -> task_works = NULL ; write_lock_irq ( & tasklist_lock ) ; if ( clone_flags & ( CLONE_PARENT | CLONE_THREAD ) ) { p -> real_parent = current -> real_parent ; p -> parent_exec_id = current -> parent_exec_id ; } else { p -> real_parent = current ; p -> parent_exec_id = current -> self_exec_id ; } spin_lock ( & current -> sighand -> siglock ) ; recalc_sigpending ( ) ; if ( signal_pending ( current ) ) { spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; retval = - ERESTARTNOINTR ; goto bad_fork_free_pid ; } if ( clone_flags & CLONE_THREAD ) { current -> signal -> nr_threads ++ ; atomic_inc ( & current -> signal -> live ) ; atomic_inc ( & current -> signal -> sigcnt ) ; p -> group_leader = current -> group_leader ; list_add_tail_rcu ( & p -> thread_group , & p -> group_leader -> thread_group ) ; } if ( likely ( p -> pid ) ) { ptrace_init_task ( p , ( clone_flags & CLONE_PTRACE ) || trace ) ; if ( thread_group_leader ( p ) ) { if ( is_child_reaper ( pid ) ) { ns_of_pid ( pid ) -> child_reaper = p ; p -> signal -> flags |= SIGNAL_UNKILLABLE ; } p -> signal -> leader_pid = pid ; p -> signal -> tty = tty_kref_get ( current -> signal -> tty ) ; attach_pid ( p , PIDTYPE_PGID , task_pgrp ( current ) ) ; attach_pid ( p , PIDTYPE_SID , task_session ( current ) ) ; list_add_tail ( & p -> sibling , & p -> real_parent -> children ) ; list_add_tail_rcu ( & p -> tasks , & init_task . tasks ) ; __this_cpu_inc ( process_counts ) ; } attach_pid ( p , PIDTYPE_PID , pid ) ; nr_threads ++ ; } total_forks ++ ; spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; proc_fork_connector ( p ) ; cgroup_post_fork ( p ) ; if ( clone_flags & CLONE_THREAD ) threadgroup_change_end ( current ) ; perf_event_fork ( p ) ; trace_task_newtask ( p , clone_flags ) ; return p ; bad_fork_free_pid : if ( pid != & init_struct_pid ) free_pid ( pid ) ; bad_fork_cleanup_io : if ( p -> io_context ) exit_io_context ( p ) ; bad_fork_cleanup_namespaces : exit_task_namespaces ( p ) ; bad_fork_cleanup_mm : if ( p -> mm ) mmput ( p -> mm ) ; bad_fork_cleanup_signal : if ( ! ( clone_flags & CLONE_THREAD ) ) free_signal_struct ( p -> signal ) ; bad_fork_cleanup_sighand : __cleanup_sighand ( p -> sighand ) ; bad_fork_cleanup_fs : exit_fs ( p ) ; bad_fork_cleanup_files : exit_files ( p ) ; bad_fork_cleanup_semundo : exit_sem ( p ) ; bad_fork_cleanup_audit : audit_free ( p ) ; bad_fork_cleanup_policy : perf_event_free_task ( p ) ; # ifdef CONFIG_NUMA mpol_put ( p -> mempolicy ) ; bad_fork_cleanup_cgroup : # endif if ( clone_flags & CLONE_THREAD ) threadgroup_change_end ( current ) ; cgroup_exit ( p , 0 ) ; delayacct_tsk_free ( p ) ; module_put ( task_thread_info ( p ) -> exec_domain -> module ) ; bad_fork_cleanup_count : atomic_dec ( & p -> cred -> user -> processes ) ; exit_creds ( p ) ; bad_fork_free : free_task ( p ) ; fork_out : return ERR_PTR ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( clone_flags & ( CLONE_NEWUSER | CLONE_FS ) ) == ( CLONE_NEWUSER | CLONE_FS ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-476 static int fscrypt_d_revalidate ( struct dentry * dentry , unsigned int flags ) { <S2SV_StartBug> struct dentry * dir ; <S2SV_EndBug> struct fscrypt_info * ci ; int dir_has_key , cached_with_key ; if ( flags & LOOKUP_RCU ) return - ECHILD ; dir = dget_parent ( dentry ) ; if ( ! d_inode ( dir ) -> i_sb -> s_cop -> is_encrypted ( d_inode ( dir ) ) ) { dput ( dir ) ; return 0 ; } <S2SV_StartBug> ci = d_inode ( dir ) -> i_crypt_info ; <S2SV_EndBug> if ( ci && ci -> ci_keyring_key && ( ci -> ci_keyring_key -> flags & ( ( 1 << KEY_FLAG_INVALIDATED ) | ( 1 << KEY_FLAG_REVOKED ) | ( 1 << KEY_FLAG_DEAD ) ) ) ) ci = NULL ; spin_lock ( & dentry -> d_lock ) ; cached_with_key = dentry -> d_flags & DCACHE_ENCRYPTED_WITH_KEY ; spin_unlock ( & dentry -> d_lock ) ; <S2SV_StartBug> dir_has_key = ( ci != NULL ) ; <S2SV_EndBug> dput ( dir ) ; if ( ( ! cached_with_key && d_is_negative ( dentry ) ) || ( ! cached_with_key && dir_has_key ) || ( cached_with_key && ! dir_has_key ) ) return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dentry * dir <S2SV_ModEnd> ; int dir_has_key <S2SV_ModStart> 0 ; } <S2SV_ModEnd> spin_lock ( & <S2SV_ModStart> dir_has_key = ( d_inode ( dir ) -> i_crypt_info <S2SV_ModEnd> != NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2184\n\n```\nCWE-000 static int create_fixed_stream_quirk ( struct snd_usb_audio * chip , struct usb_interface * iface , struct usb_driver * driver , const struct snd_usb_audio_quirk * quirk ) { struct audioformat * fp ; struct usb_host_interface * alts ; struct usb_interface_descriptor * altsd ; int stream , err ; unsigned * rate_table = NULL ; fp = kmemdup ( quirk -> data , sizeof ( * fp ) , GFP_KERNEL ) ; if ( ! fp ) { usb_audio_err ( chip , \"cannot<S2SV_blank>memdup\\\\n\" ) ; return - ENOMEM ; } if ( fp -> nr_rates > MAX_NR_RATES ) { kfree ( fp ) ; return - EINVAL ; } if ( fp -> nr_rates > 0 ) { rate_table = kmemdup ( fp -> rate_table , sizeof ( int ) * fp -> nr_rates , GFP_KERNEL ) ; if ( ! rate_table ) { kfree ( fp ) ; return - ENOMEM ; } fp -> rate_table = rate_table ; } stream = ( fp -> endpoint & USB_DIR_IN ) ? SNDRV_PCM_STREAM_CAPTURE : SNDRV_PCM_STREAM_PLAYBACK ; err = snd_usb_add_audio_stream ( chip , stream , fp ) ; if ( err < 0 ) { kfree ( fp ) ; kfree ( rate_table ) ; return err ; } if ( fp -> iface != get_iface_desc ( & iface -> altsetting [ 0 ] ) -> bInterfaceNumber || fp -> altset_idx >= iface -> num_altsetting ) { kfree ( fp ) ; kfree ( rate_table ) ; return - EINVAL ; } alts = & iface -> altsetting [ fp -> altset_idx ] ; altsd = get_iface_desc ( alts ) ; <S2SV_StartBug> fp -> protocol = altsd -> bInterfaceProtocol ; <S2SV_EndBug> if ( fp -> datainterval == 0 ) fp -> datainterval = snd_usb_parse_datainterval ( chip , alts ) ; if ( fp -> maxpacksize == 0 ) fp -> maxpacksize = le16_to_cpu ( get_endpoint ( alts , 0 ) -> wMaxPacketSize ) ; usb_set_interface ( chip -> dev , fp -> iface , 0 ) ; snd_usb_init_pitch ( chip , fp -> iface , alts , fp ) ; snd_usb_init_sample_rate ( chip , fp -> iface , alts , fp , fp -> rate_max ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> alts ) ; if ( altsd -> bNumEndpoints < 1 ) { kfree ( fp ) ; kfree ( rate_table ) ; return - EINVAL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0550\n\n```\nCWE-000 WORD32 ih264d_parse_inter_slice_data_cavlc ( dec_struct_t * ps_dec , dec_slice_params_t * ps_slice , UWORD16 u2_first_mb_in_slice ) { UWORD32 uc_more_data_flag ; WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 , u1_mb_idx ; UWORD32 i2_mb_skip_run ; UWORD32 u1_read_mb_type ; UWORD32 u1_mbaff ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD32 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end = 0 ; UWORD32 u1_tfr_n_mb = 0 ; UWORD32 u1_decode_nmb = 0 ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD32 u1_mb_threshold ; WORD32 ret = OK ; if ( ps_slice -> u1_slice_type == P_SLICE ) { u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; u1_mb_threshold = 5 ; } else { u1_inter_mb_type = B_MB ; u1_deblk_mb_type = D_B_SLICE ; u1_mb_threshold = 23 ; } ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; u1_num_mbs = u1_mb_idx ; u1_num_mbsNby2 = 0 ; u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff ; i2_mb_skip_run = 0 ; uc_more_data_flag = 1 ; u1_read_mb_type = 0 ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; ps_dec -> pv_prev_mb_parse_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) { ret = ERROR_MB_ADDRESS_T ; break ; } ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; if ( ( ! i2_mb_skip_run ) && ( ! u1_read_mb_type ) ) { UWORD32 u4_bitstream_offset = * pu4_bitstrm_ofst ; UWORD32 u4_word , u4_ldz ; NEXTBITS_32 ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_ldz = CLZ ( u4_word ) ; u4_bitstream_offset += ( u4_ldz + 1 ) ; u4_word = 0 ; if ( u4_ldz ) { GETBITS ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf , u4_ldz ) ; } * pu4_bitstrm_ofst = u4_bitstream_offset ; i2_mb_skip_run = ( ( 1 << u4_ldz ) + u4_word - 1 ) ; COPYTHECONTEXT ( \"mb_skip_run\" , i2_mb_skip_run ) ; uc_more_data_flag = MORE_RBSP_DATA ( ps_bitstrm ) ; u1_read_mb_type = uc_more_data_flag ; } ps_dec -> pf_get_mb_info ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; if ( i2_mb_skip_run ) { ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> u1_sub_mb_num = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_mb_mc_mode = PRED_16x16 ; ps_cur_mb_info -> u1_cbp = 0 ; { parse_part_params_t * ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; } ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CAVLC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; i2_mb_skip_run -- ; } else { u1_read_mb_type = 0 ; { UWORD32 u4_bitstream_offset = * pu4_bitstrm_ofst ; UWORD32 u4_word , u4_ldz , u4_temp ; NEXTBITS_32 ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_ldz = CLZ ( u4_word ) ; u4_bitstream_offset += ( u4_ldz + 1 ) ; u4_word = 0 ; if ( u4_ldz ) GETBITS ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf , u4_ldz ) ; * pu4_bitstrm_ofst = u4_bitstream_offset ; u4_temp = ( ( 1 << u4_ldz ) + u4_word - 1 ) ; if ( u4_temp > ( UWORD32 ) ( 25 + u1_mb_threshold ) ) return ERROR_MB_TYPE ; u1_mb_type = u4_temp ; COPYTHECONTEXT ( \"u1_mb_type\" , u1_mb_type ) ; } ps_cur_mb_info -> u1_mb_type = u1_mb_type ; if ( u1_mb_type < u1_mb_threshold ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ret = ps_dec -> pf_parse_inter_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs , u1_num_mbsNby2 ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; } else { ps_parse_mb_data -> u1_num_part = 0 ; ps_parse_mb_data -> u1_isI_mb = 1 ; if ( ( 25 + u1_mb_threshold ) == u1_mb_type ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = I_PCM_MB ; ret = ih264d_parse_ipcm_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs ) ; if ( ret != OK ) return ret ; ps_dec -> u1_qp = 0 ; } else { ret = ih264d_parse_imb_cavlc ( ps_dec , ps_cur_mb_info , u1_num_mbs , ( UWORD8 ) ( u1_mb_type - u1_mb_threshold ) ) ; if ( ret != OK ) return ret ; } ps_cur_deblk_mb -> u1_mb_type |= D_INTRA_MB ; } uc_more_data_flag = MORE_RBSP_DATA ( ps_bitstrm ) ; } ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; <S2SV_StartBug> } <S2SV_EndBug> i2_cur_mb_addr ++ ; u1_num_mbs ++ ; u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ( ! ( uc_more_data_flag || i2_mb_skip_run ) ) ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; { ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } } if ( u1_decode_nmb ) { if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; if ( u1_tfr_n_mb ) u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ( u2_first_mb_in_slice << u1_mbaff ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ps_cur_mb_info ) ; if ( ! uc_more_data_flag && ! i2_mb_skip_run && ( 0 == ( i2_cur_mb_addr & 1 ) ) ) { return ERROR_EOB_FLUSHBITS_T ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6262\n\n```\nCWE-134 void rrd_graph_options ( int argc , char * argv [ ] , image_desc_t * im ) { int stroff ; char * parsetime_error = NULL ; char scan_gtm [ 12 ] , scan_mtm [ 12 ] , scan_ltm [ 12 ] , col_nam [ 12 ] ; char double_str [ 20 ] , double_str2 [ 20 ] ; time_t start_tmp = 0 , end_tmp = 0 ; long long_tmp ; rrd_time_value_t start_tv , end_tv ; long unsigned int color ; # define LONGOPT_UNITS_SI 255 struct option long_options [ ] = { { \"alt-autoscale\" , no_argument , 0 , 'A' } , { \"imgformat\" , required_argument , 0 , 'a' } , { \"font-smoothing-threshold\" , required_argument , 0 , 'B' } , { \"base\" , required_argument , 0 , 'b' } , { \"color\" , required_argument , 0 , 'c' } , { \"full-size-mode\" , no_argument , 0 , 'D' } , { \"daemon\" , required_argument , 0 , 'd' } , { \"slope-mode\" , no_argument , 0 , 'E' } , { \"end\" , required_argument , 0 , 'e' } , { \"force-rules-legend\" , no_argument , 0 , 'F' } , { \"imginfo\" , required_argument , 0 , 'f' } , { \"graph-render-mode\" , required_argument , 0 , 'G' } , { \"no-legend\" , no_argument , 0 , 'g' } , { \"height\" , required_argument , 0 , 'h' } , { \"no-minor\" , no_argument , 0 , 'I' } , { \"interlaced\" , no_argument , 0 , 'i' } , { \"alt-autoscale-min\" , no_argument , 0 , 'J' } , { \"only-graph\" , no_argument , 0 , 'j' } , { \"units-length\" , required_argument , 0 , 'L' } , { \"lower-limit\" , required_argument , 0 , 'l' } , { \"alt-autoscale-max\" , no_argument , 0 , 'M' } , { \"zoom\" , required_argument , 0 , 'm' } , { \"no-gridfit\" , no_argument , 0 , 'N' } , { \"font\" , required_argument , 0 , 'n' } , { \"logarithmic\" , no_argument , 0 , 'o' } , { \"pango-markup\" , no_argument , 0 , 'P' } , { \"font-render-mode\" , required_argument , 0 , 'R' } , { \"rigid\" , no_argument , 0 , 'r' } , { \"step\" , required_argument , 0 , 'S' } , { \"start\" , required_argument , 0 , 's' } , { \"tabwidth\" , required_argument , 0 , 'T' } , { \"title\" , required_argument , 0 , 't' } , { \"upper-limit\" , required_argument , 0 , 'u' } , { \"vertical-label\" , required_argument , 0 , 'v' } , { \"watermark\" , required_argument , 0 , 'W' } , { \"width\" , required_argument , 0 , 'w' } , { \"units-exponent\" , required_argument , 0 , 'X' } , { \"x-grid\" , required_argument , 0 , 'x' } , { \"alt-y-grid\" , no_argument , 0 , 'Y' } , { \"y-grid\" , required_argument , 0 , 'y' } , { \"lazy\" , no_argument , 0 , 'z' } , { \"use-nan-for-all-missing-data\" , no_argument , 0 , 'Z' } , { \"units\" , required_argument , 0 , LONGOPT_UNITS_SI } , { \"alt-y-mrtg\" , no_argument , 0 , 1000 } , { \"disable-rrdtool-tag\" , no_argument , 0 , 1001 } , { \"right-axis\" , required_argument , 0 , 1002 } , { \"right-axis-label\" , required_argument , 0 , 1003 } , { \"right-axis-format\" , required_argument , 0 , 1004 } , { \"legend-position\" , required_argument , 0 , 1005 } , { \"legend-direction\" , required_argument , 0 , 1006 } , { \"border\" , required_argument , 0 , 1007 } , { \"grid-dash\" , required_argument , 0 , 1008 } , { \"dynamic-labels\" , no_argument , 0 , 1009 } , { \"week-fmt\" , required_argument , 0 , 1010 } , { \"graph-type\" , required_argument , 0 , 1011 } , { \"left-axis-format\" , required_argument , 0 , 1012 } , { 0 , 0 , 0 , 0 } } ; optind = 0 ; opterr = 0 ; rrd_parsetime ( \"end-24h\" , & start_tv ) ; rrd_parsetime ( \"now\" , & end_tv ) ; while ( 1 ) { int option_index = 0 ; int opt ; int col_start , col_end ; opt = getopt_long ( argc , argv , \"Aa:B:b:c:Dd:Ee:Ff:G:gh:IiJjL:l:Mm:Nn:oPR:rS:s:T:t:u:v:W:w:X:x:Yy:Zz\" , long_options , & option_index ) ; if ( opt == EOF ) break ; switch ( opt ) { case 'I' : im -> extra_flags |= NOMINOR ; break ; case 'Y' : im -> extra_flags |= ALTYGRID ; break ; case 'A' : im -> extra_flags |= ALTAUTOSCALE ; break ; case 'J' : im -> extra_flags |= ALTAUTOSCALE_MIN ; break ; case 'M' : im -> extra_flags |= ALTAUTOSCALE_MAX ; break ; case 'j' : im -> extra_flags |= ONLY_GRAPH ; break ; case 'g' : im -> extra_flags |= NOLEGEND ; break ; case 'Z' : im -> extra_flags |= ALLOW_MISSING_DS ; break ; case 1005 : if ( strcmp ( optarg , \"north\" ) == 0 ) { im -> legendposition = NORTH ; } else if ( strcmp ( optarg , \"west\" ) == 0 ) { im -> legendposition = WEST ; } else if ( strcmp ( optarg , \"south\" ) == 0 ) { im -> legendposition = SOUTH ; } else if ( strcmp ( optarg , \"east\" ) == 0 ) { im -> legendposition = EAST ; } else { rrd_set_error ( \"unknown<S2SV_blank>legend-position<S2SV_blank>\\'%s\\'\" , optarg ) ; return ; } break ; case 1006 : if ( strcmp ( optarg , \"topdown\" ) == 0 ) { im -> legenddirection = TOP_DOWN ; } else if ( strcmp ( optarg , \"bottomup\" ) == 0 ) { im -> legenddirection = BOTTOM_UP ; } else if ( strcmp ( optarg , \"bottomup2\" ) == 0 ) { im -> legenddirection = BOTTOM_UP2 ; } else { rrd_set_error ( \"unknown<S2SV_blank>legend-position<S2SV_blank>\\'%s\\'\" , optarg ) ; return ; } break ; case 'F' : im -> extra_flags |= FORCE_RULES_LEGEND ; break ; case 1001 : im -> extra_flags |= NO_RRDTOOL_TAG ; break ; case LONGOPT_UNITS_SI : if ( im -> extra_flags & FORCE_UNITS ) { rrd_set_error ( \"--units<S2SV_blank>can<S2SV_blank>only<S2SV_blank>be<S2SV_blank>used<S2SV_blank>once!\" ) ; return ; } if ( strcmp ( optarg , \"si\" ) == 0 ) im -> extra_flags |= FORCE_UNITS_SI ; else { rrd_set_error ( \"invalid<S2SV_blank>argument<S2SV_blank>for<S2SV_blank>--units:<S2SV_blank>%s\" , optarg ) ; return ; } break ; case 'X' : im -> unitsexponent = atoi ( optarg ) ; break ; case 'L' : im -> unitslength = atoi ( optarg ) ; im -> forceleftspace = 1 ; break ; case 'T' : if ( rrd_strtodbl ( optarg , 0 , & ( im -> tabwidth ) , \"option<S2SV_blank>-T\" ) != 2 ) return ; break ; case 'S' : im -> step = atoi ( optarg ) ; break ; case 'N' : im -> gridfit = 0 ; break ; case 'P' : im -> with_markup = 1 ; break ; case 's' : if ( ( parsetime_error = rrd_parsetime ( optarg , & start_tv ) ) ) { rrd_set_error ( \"start<S2SV_blank>time:<S2SV_blank>%s\" , parsetime_error ) ; return ; } break ; case 'e' : if ( ( parsetime_error = rrd_parsetime ( optarg , & end_tv ) ) ) { rrd_set_error ( \"end<S2SV_blank>time:<S2SV_blank>%s\" , parsetime_error ) ; return ; } break ; case 'x' : if ( strcmp ( optarg , \"none\" ) == 0 ) { im -> draw_x_grid = 0 ; break ; } ; if ( sscanf ( optarg , \"%10[A-Z]:%ld:%10[A-Z]:%ld:%10[A-Z]:%ld:%ld:%n\" , scan_gtm , & im -> xlab_user . gridst , scan_mtm , & im -> xlab_user . mgridst , scan_ltm , & im -> xlab_user . labst , & im -> xlab_user . precis , & stroff ) == 7 && stroff != 0 ) { im -> xlab_form = strdup ( optarg + stroff ) ; if ( ! im -> xlab_form ) { rrd_set_error ( \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>xlab_form\" ) ; return ; } if ( ( int ) ( im -> xlab_user . gridtm = tmt_conv ( scan_gtm ) ) == - 1 ) { rrd_set_error ( \"unknown<S2SV_blank>keyword<S2SV_blank>%s\" , scan_gtm ) ; return ; } else if ( ( int ) ( im -> xlab_user . mgridtm = tmt_conv ( scan_mtm ) ) == - 1 ) { rrd_set_error ( \"unknown<S2SV_blank>keyword<S2SV_blank>%s\" , scan_mtm ) ; return ; } else if ( ( int ) ( im -> xlab_user . labtm = tmt_conv ( scan_ltm ) ) == - 1 ) { rrd_set_error ( \"unknown<S2SV_blank>keyword<S2SV_blank>%s\" , scan_ltm ) ; return ; } im -> xlab_user . minsec = 1 ; im -> xlab_user . stst = im -> xlab_form ? im -> xlab_form : \"\" ; } else { rrd_set_error ( \"invalid<S2SV_blank>x-grid<S2SV_blank>format\" ) ; return ; } break ; case 'y' : if ( strcmp ( optarg , \"none\" ) == 0 ) { im -> draw_y_grid = 0 ; break ; } ; if ( sscanf ( optarg , \"%[-0-9.e+]:%d\" , double_str , & im -> ylabfact ) == 2 ) { if ( rrd_strtodbl ( double_str , 0 , & ( im -> ygridstep ) , \"option<S2SV_blank>-y\" ) != 2 ) { return ; } if ( im -> ygridstep <= 0 ) { rrd_set_error ( \"grid<S2SV_blank>step<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>0\" ) ; return ; } else if ( im -> ylabfact < 1 ) { rrd_set_error ( \"label<S2SV_blank>factor<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>0\" ) ; return ; } } else { rrd_set_error ( \"invalid<S2SV_blank>y-grid<S2SV_blank>format\" ) ; return ; } break ; case 1007 : im -> draw_3d_border = atoi ( optarg ) ; break ; case 1008 : if ( sscanf ( optarg , \"%[-0-9.e+]:%[-0-9.e+]\" , double_str , double_str2 ) != 2 ) { if ( rrd_strtodbl ( double_str , 0 , & ( im -> grid_dash_on ) , NULL ) != 2 || rrd_strtodbl ( double_str2 , 0 , & ( im -> grid_dash_off ) , NULL ) != 2 ) { rrd_set_error ( \"expected<S2SV_blank>grid-dash<S2SV_blank>format<S2SV_blank>float:float\" ) ; return ; } } break ; case 1009 : im -> dynamic_labels = 1 ; break ; case 1010 : strncpy ( week_fmt , optarg , sizeof week_fmt ) ; week_fmt [ ( sizeof week_fmt ) - 1 ] = '\\\\0' ; break ; case 1002 : if ( sscanf ( optarg , \"%[-0-9.e+]:%[-0-9.e+]\" , double_str , double_str2 ) == 2 && rrd_strtodbl ( double_str , 0 , & ( im -> second_axis_scale ) , NULL ) == 2 && rrd_strtodbl ( double_str2 , 0 , & ( im -> second_axis_shift ) , NULL ) == 2 ) { if ( im -> second_axis_scale == 0 ) { rrd_set_error ( \"the<S2SV_blank>second_axis_scale<S2SV_blank><S2SV_blank>must<S2SV_blank>not<S2SV_blank>be<S2SV_blank>0\" ) ; return ; } } else { rrd_set_error ( \"invalid<S2SV_blank>right-axis<S2SV_blank>format<S2SV_blank>expected<S2SV_blank>scale:shift\" ) ; return ; } break ; case 1003 : im -> second_axis_legend = strdup ( optarg ) ; if ( ! im -> second_axis_legend ) { rrd_set_error ( \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>second_axis_legend\" ) ; return ; } break ; case 1004 : <S2SV_StartBug> if ( bad_format ( optarg ) ) { <S2SV_EndBug> rrd_set_error ( \"use<S2SV_blank>either<S2SV_blank>%le<S2SV_blank>or<S2SV_blank>%lf<S2SV_blank>formats\" ) ; return ; } im -> second_axis_format = strdup ( optarg ) ; if ( ! im -> second_axis_format ) { rrd_set_error ( \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>second_axis_format\" ) ; return ; } break ; case 1012 : <S2SV_StartBug> if ( bad_format ( optarg ) ) { <S2SV_EndBug> rrd_set_error ( \"use<S2SV_blank>either<S2SV_blank>%le<S2SV_blank>or<S2SV_blank>%lf<S2SV_blank>formats\" ) ; return ; } im -> primary_axis_format = strdup ( optarg ) ; if ( ! im -> primary_axis_format ) { rrd_set_error ( \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>primary_axis_format\" ) ; return ; } break ; case 'v' : im -> ylegend = strdup ( optarg ) ; if ( ! im -> ylegend ) { rrd_set_error ( \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>ylegend\" ) ; return ; } break ; case 'u' : if ( rrd_strtodbl ( optarg , 0 , & ( im -> maxval ) , \"option<S2SV_blank>-u\" ) != 2 ) { return ; } break ; case 'l' : if ( rrd_strtodbl ( optarg , 0 , & ( im -> minval ) , \"option<S2SV_blank>-l\" ) != 2 ) { return ; } break ; case 'b' : im -> base = atol ( optarg ) ; if ( im -> base != 1024 && im -> base != 1000 ) { rrd_set_error ( \"the<S2SV_blank>only<S2SV_blank>sensible<S2SV_blank>value<S2SV_blank>for<S2SV_blank>base<S2SV_blank>apart<S2SV_blank>from<S2SV_blank>1000<S2SV_blank>is<S2SV_blank>1024\" ) ; return ; } break ; case 'w' : long_tmp = atol ( optarg ) ; if ( long_tmp < 10 ) { rrd_set_error ( \"width<S2SV_blank>below<S2SV_blank>10<S2SV_blank>pixels\" ) ; return ; } im -> xsize = long_tmp ; break ; case 'h' : long_tmp = atol ( optarg ) ; if ( long_tmp < 10 ) { rrd_set_error ( \"height<S2SV_blank>below<S2SV_blank>10<S2SV_blank>pixels\" ) ; return ; } im -> ysize = long_tmp ; break ; case 'D' : im -> extra_flags |= FULL_SIZE_MODE ; break ; case 'i' : break ; case 'r' : im -> rigid = 1 ; break ; case 'f' : im -> imginfo = optarg ; break ; case 'a' : if ( ( int ) ( im -> imgformat = if_conv ( optarg ) ) == - 1 ) { rrd_set_error ( \"unsupported<S2SV_blank>graphics<S2SV_blank>format<S2SV_blank>\\'%s\\'\" , optarg ) ; return ; } break ; case 1011 : if ( ( int ) ( im -> graph_type = type_conv ( optarg ) ) == - 1 ) { rrd_set_error ( \"unsupported<S2SV_blank>graphics<S2SV_blank>type<S2SV_blank>\\'%s\\'\" , optarg ) ; return ; } break ; case 'z' : im -> lazy = 1 ; break ; case 'E' : im -> slopemode = 1 ; break ; case 'o' : im -> logarithmic = 1 ; break ; case 'c' : if ( sscanf ( optarg , \"%10[A-Z]#%n%8lx%n\" , col_nam , & col_start , & color , & col_end ) == 2 ) { int ci ; int col_len = col_end - col_start ; switch ( col_len ) { case 3 : color = ( ( ( color & 0xF00 ) * 0x110000 ) | ( ( color & 0x0F0 ) * 0x011000 ) | ( ( color & 0x00F ) * 0x001100 ) | 0x000000FF ) ; break ; case 4 : color = ( ( ( color & 0xF000 ) * 0x11000 ) | ( ( color & 0x0F00 ) * 0x01100 ) | ( ( color & 0x00F0 ) * 0x00110 ) | ( ( color & 0x000F ) * 0x00011 ) ) ; break ; case 6 : color = ( color << 8 ) + 0xff ; break ; case 8 : break ; default : rrd_set_error ( \"the<S2SV_blank>color<S2SV_blank>format<S2SV_blank>is<S2SV_blank>#RRGGBB[AA]\" ) ; return ; } if ( ( ci = grc_conv ( col_nam ) ) != - 1 ) { im -> graph_col [ ci ] = gfx_hex_to_col ( color ) ; } else { rrd_set_error ( \"invalid<S2SV_blank>color<S2SV_blank>name<S2SV_blank>\\'%s\\'\" , col_nam ) ; return ; } } else { rrd_set_error ( \"invalid<S2SV_blank>color<S2SV_blank>def<S2SV_blank>format\" ) ; return ; } break ; case 'n' : { char prop [ 15 ] ; double size = 1 ; int end ; if ( sscanf ( optarg , \"%10[A-Z]:%[-0-9.e+]%n\" , prop , double_str , & end ) >= 2 && rrd_strtodbl ( double_str , 0 , & size , NULL ) == 2 ) { int sindex , propidx ; if ( ( sindex = text_prop_conv ( prop ) ) != - 1 ) { for ( propidx = sindex ; propidx < TEXT_PROP_LAST ; propidx ++ ) { if ( size > 0 ) { rrd_set_font_desc ( im , propidx , NULL , size ) ; } if ( ( int ) strlen ( optarg ) > end + 2 ) { if ( optarg [ end ] == ':' ) { rrd_set_font_desc ( im , propidx , optarg + end + 1 , 0 ) ; } else { rrd_set_error ( \"expected<S2SV_blank>:<S2SV_blank>after<S2SV_blank>font<S2SV_blank>size<S2SV_blank>in<S2SV_blank>\\'%s\\'\" , optarg ) ; return ; } } if ( propidx == sindex && sindex != 0 ) break ; } } else { rrd_set_error ( \"invalid<S2SV_blank>fonttag<S2SV_blank>\\'%s\\'\" , prop ) ; return ; } } else { rrd_set_error ( \"invalid<S2SV_blank>text<S2SV_blank>property<S2SV_blank>format\" ) ; return ; } break ; } case 'm' : if ( rrd_strtodbl ( optarg , 0 , & ( im -> zoom ) , \"option<S2SV_blank>-m\" ) != 2 ) { return ; } if ( im -> zoom <= 0.0 ) { rrd_set_error ( \"zoom<S2SV_blank>factor<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>0\" ) ; return ; } break ; case 't' : im -> title = strdup ( optarg ) ; if ( ! im -> title ) { rrd_set_error ( \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>title\" ) ; return ; } break ; case 'R' : if ( strcmp ( optarg , \"normal\" ) == 0 ) { cairo_font_options_set_antialias ( im -> font_options , CAIRO_ANTIALIAS_GRAY ) ; cairo_font_options_set_hint_style ( im -> font_options , CAIRO_HINT_STYLE_FULL ) ; } else if ( strcmp ( optarg , \"light\" ) == 0 ) { cairo_font_options_set_antialias ( im -> font_options , CAIRO_ANTIALIAS_GRAY ) ; cairo_font_options_set_hint_style ( im -> font_options , CAIRO_HINT_STYLE_SLIGHT ) ; } else if ( strcmp ( optarg , \"mono\" ) == 0 ) { cairo_font_options_set_antialias ( im -> font_options , CAIRO_ANTIALIAS_NONE ) ; cairo_font_options_set_hint_style ( im -> font_options , CAIRO_HINT_STYLE_FULL ) ; } else { rrd_set_error ( \"unknown<S2SV_blank>font-render-mode<S2SV_blank>\\'%s\\'\" , optarg ) ; return ; } break ; case 'G' : if ( strcmp ( optarg , \"normal\" ) == 0 ) im -> graph_antialias = CAIRO_ANTIALIAS_GRAY ; else if ( strcmp ( optarg , \"mono\" ) == 0 ) im -> graph_antialias = CAIRO_ANTIALIAS_NONE ; else { rrd_set_error ( \"unknown<S2SV_blank>graph-render-mode<S2SV_blank>\\'%s\\'\" , optarg ) ; return ; } break ; case 'B' : break ; case 'W' : im -> watermark = strdup ( optarg ) ; if ( ! im -> watermark ) { rrd_set_error ( \"cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>watermark\" ) ; return ; } break ; case 'd' : { if ( im -> daemon_addr != NULL ) { rrd_set_error ( \"You<S2SV_blank>cannot<S2SV_blank>specify<S2SV_blank>--daemon<S2SV_blank>\" \"more<S2SV_blank>than<S2SV_blank>once.\" ) ; return ; } im -> daemon_addr = strdup ( optarg ) ; if ( im -> daemon_addr == NULL ) { rrd_set_error ( \"strdup<S2SV_blank>failed\" ) ; return ; } break ; } case '?' : if ( optopt != 0 ) rrd_set_error ( \"unknown<S2SV_blank>option<S2SV_blank>\\'%c\\'\" , optopt ) ; else rrd_set_error ( \"unknown<S2SV_blank>option<S2SV_blank>\\'%s\\'\" , argv [ optind - 1 ] ) ; return ; } } pango_cairo_context_set_font_options ( pango_layout_get_context ( im -> layout ) , im -> font_options ) ; pango_layout_context_changed ( im -> layout ) ; if ( im -> logarithmic && im -> minval <= 0 ) { rrd_set_error ( \"for<S2SV_blank>a<S2SV_blank>logarithmic<S2SV_blank>yaxis<S2SV_blank>you<S2SV_blank>must<S2SV_blank>specify<S2SV_blank>a<S2SV_blank>lower-limit<S2SV_blank>><S2SV_blank>0\" ) ; return ; } if ( rrd_proc_start_end ( & start_tv , & end_tv , & start_tmp , & end_tmp ) == - 1 ) { return ; } if ( start_tmp < 3600 * 24 * 365 * 10 ) { rrd_set_error ( \"the<S2SV_blank>first<S2SV_blank>entry<S2SV_blank>to<S2SV_blank>fetch<S2SV_blank>should<S2SV_blank>be<S2SV_blank>after<S2SV_blank>1980<S2SV_blank>(%ld)\" , start_tmp ) ; return ; } if ( end_tmp < start_tmp ) { rrd_set_error ( \"start<S2SV_blank>(%ld)<S2SV_blank>should<S2SV_blank>be<S2SV_blank>less<S2SV_blank>than<S2SV_blank>end<S2SV_blank>(%ld)\" , start_tmp , end_tmp ) ; return ; } im -> start = start_tmp ; im -> end = end_tmp ; im -> step = max ( ( long ) im -> step , ( im -> end - im -> start ) / im -> xsize ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( bad_format_axis ( optarg ) ) { <S2SV_ModEnd> return ; } <S2SV_ModStart> : if ( bad_format_axis ( optarg ) ) { <S2SV_ModEnd> return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 int kvm_set_msr_common ( struct kvm_vcpu * vcpu , struct msr_data * msr_info ) { bool pr = false ; u32 msr = msr_info -> index ; u64 data = msr_info -> data ; switch ( msr ) { case MSR_AMD64_NB_CFG : case MSR_IA32_UCODE_REV : case MSR_IA32_UCODE_WRITE : case MSR_VM_HSAVE_PA : case MSR_AMD64_PATCH_LOADER : case MSR_AMD64_BU_CFG2 : break ; case MSR_EFER : return set_efer ( vcpu , data ) ; case MSR_K7_HWCR : data &= ~ ( u64 ) 0x40 ; data &= ~ ( u64 ) 0x100 ; data &= ~ ( u64 ) 0x8 ; if ( data != 0 ) { vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>HWCR<S2SV_blank>wrmsr:<S2SV_blank>0x%llx\\\\n\" , data ) ; return 1 ; } break ; case MSR_FAM10H_MMIO_CONF_BASE : if ( data != 0 ) { vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>MMIO_CONF_BASE<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%llx\\\\n\" , data ) ; return 1 ; } break ; case MSR_IA32_DEBUGCTLMSR : if ( ! data ) { break ; } else if ( data & ~ ( DEBUGCTLMSR_LBR | DEBUGCTLMSR_BTF ) ) { return 1 ; } vcpu_unimpl ( vcpu , \"%s:<S2SV_blank>MSR_IA32_DEBUGCTLMSR<S2SV_blank>0x%llx,<S2SV_blank>nop\\\\n\" , __func__ , data ) ; break ; case 0x200 ... 0x2ff : return set_msr_mtrr ( vcpu , msr , data ) ; case MSR_IA32_APICBASE : kvm_set_apic_base ( vcpu , data ) ; break ; case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff : return kvm_x2apic_msr_write ( vcpu , msr , data ) ; case MSR_IA32_TSCDEADLINE : kvm_set_lapic_tscdeadline_msr ( vcpu , data ) ; break ; case MSR_IA32_TSC_ADJUST : if ( guest_cpuid_has_tsc_adjust ( vcpu ) ) { if ( ! msr_info -> host_initiated ) { u64 adj = data - vcpu -> arch . ia32_tsc_adjust_msr ; kvm_x86_ops -> adjust_tsc_offset ( vcpu , adj , true ) ; } vcpu -> arch . ia32_tsc_adjust_msr = data ; } break ; case MSR_IA32_MISC_ENABLE : vcpu -> arch . ia32_misc_enable_msr = data ; break ; case MSR_KVM_WALL_CLOCK_NEW : case MSR_KVM_WALL_CLOCK : vcpu -> kvm -> arch . wall_clock = data ; kvm_write_wall_clock ( vcpu -> kvm , data ) ; break ; case MSR_KVM_SYSTEM_TIME_NEW : case MSR_KVM_SYSTEM_TIME : { <S2SV_StartBug> kvmclock_reset ( vcpu ) ; <S2SV_EndBug> vcpu -> arch . time = data ; kvm_make_request ( KVM_REQ_CLOCK_UPDATE , vcpu ) ; if ( ! ( data & 1 ) ) break ; <S2SV_StartBug> vcpu -> arch . time_offset = data & ~ ( PAGE_MASK | 1 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( vcpu -> arch . time_offset & <S2SV_EndBug> ( sizeof ( struct pvclock_vcpu_time_info ) - 1 ) ) break ; <S2SV_StartBug> vcpu -> arch . time_page = <S2SV_EndBug> <S2SV_StartBug> gfn_to_page ( vcpu -> kvm , data >> PAGE_SHIFT ) ; <S2SV_EndBug> if ( is_error_page ( vcpu -> arch . time_page ) ) vcpu -> arch . time_page = NULL ; break ; } case MSR_KVM_ASYNC_PF_EN : if ( kvm_pv_enable_async_pf ( vcpu , data ) ) return 1 ; break ; case MSR_KVM_STEAL_TIME : if ( unlikely ( ! sched_info_on ( ) ) ) return 1 ; if ( data & KVM_STEAL_RESERVED_MASK ) return 1 ; if ( kvm_gfn_to_hva_cache_init ( vcpu -> kvm , & vcpu -> arch . st . stime , data & KVM_STEAL_VALID_BITS ) ) return 1 ; vcpu -> arch . st . msr_val = data ; if ( ! ( data & KVM_MSR_ENABLED ) ) break ; vcpu -> arch . st . last_steal = current -> sched_info . run_delay ; preempt_disable ( ) ; accumulate_steal_time ( vcpu ) ; preempt_enable ( ) ; kvm_make_request ( KVM_REQ_STEAL_UPDATE , vcpu ) ; break ; case MSR_KVM_PV_EOI_EN : if ( kvm_lapic_enable_pv_eoi ( vcpu , data ) ) return 1 ; break ; case MSR_IA32_MCG_CTL : case MSR_IA32_MCG_STATUS : case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1 : return set_msr_mce ( vcpu , msr , data ) ; case MSR_K7_EVNTSEL0 : case MSR_K7_EVNTSEL1 : case MSR_K7_EVNTSEL2 : case MSR_K7_EVNTSEL3 : if ( data != 0 ) vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_K7_PERFCTR0 : case MSR_K7_PERFCTR1 : case MSR_K7_PERFCTR2 : case MSR_K7_PERFCTR3 : vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_P6_PERFCTR0 : case MSR_P6_PERFCTR1 : pr = true ; case MSR_P6_EVNTSEL0 : case MSR_P6_EVNTSEL1 : if ( kvm_pmu_msr ( vcpu , msr ) ) return kvm_pmu_set_msr ( vcpu , msr , data ) ; if ( pr || data != 0 ) vcpu_unimpl ( vcpu , \"disabled<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_K7_CLK_CTL : break ; case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15 : if ( kvm_hv_msr_partition_wide ( msr ) ) { int r ; mutex_lock ( & vcpu -> kvm -> lock ) ; r = set_msr_hyperv_pw ( vcpu , msr , data ) ; mutex_unlock ( & vcpu -> kvm -> lock ) ; return r ; } else return set_msr_hyperv ( vcpu , msr , data ) ; break ; case MSR_IA32_BBL_CR_CTL3 : vcpu_unimpl ( vcpu , \"ignored<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; break ; case MSR_AMD64_OSVW_ID_LENGTH : if ( ! guest_cpuid_has_osvw ( vcpu ) ) return 1 ; vcpu -> arch . osvw . length = data ; break ; case MSR_AMD64_OSVW_STATUS : if ( ! guest_cpuid_has_osvw ( vcpu ) ) return 1 ; vcpu -> arch . osvw . status = data ; break ; default : if ( msr && ( msr == vcpu -> kvm -> arch . xen_hvm_config . msr ) ) return xen_hvm_config ( vcpu , data ) ; if ( kvm_pmu_msr ( vcpu , msr ) ) return kvm_pmu_set_msr ( vcpu , msr , data ) ; if ( ! ignore_msrs ) { vcpu_unimpl ( vcpu , \"unhandled<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; return 1 ; } else { vcpu_unimpl ( vcpu , \"ignored<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MSR_KVM_SYSTEM_TIME : { u64 gpa_offset ; <S2SV_ModStart> ) break ; gpa_offset <S2SV_ModEnd> = data & <S2SV_ModStart> ; if ( gpa_offset <S2SV_ModEnd> & ( sizeof <S2SV_ModStart> ) break ; if ( kvm_gfn_to_hva_cache_init <S2SV_ModEnd> ( vcpu -> <S2SV_ModStart> -> kvm , & vcpu -> arch . pv_time , data & ~ 1ULL ) ) vcpu -> arch . pv_time_enabled = false ; else vcpu -> arch . pv_time_enabled = true <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7011\n\n```\nCWE-119 static int read_header ( FFV1Context * f ) { uint8_t state [ CONTEXT_SIZE ] ; int i , j , context_count = - 1 ; RangeCoder * const c = & f -> slice_context [ 0 ] -> c ; memset ( state , 128 , sizeof ( state ) ) ; if ( f -> version < 2 ) { <S2SV_StartBug> unsigned v = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> if ( v >= 2 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>ver01<S2SV_blank>header\\\\n\" , v ) ; return AVERROR_INVALIDDATA ; } f -> version = v ; f -> ac = f -> avctx -> coder_type = get_symbol ( c , state , 0 ) ; if ( f -> ac > 1 ) { for ( i = 1 ; i < 256 ; i ++ ) f -> state_transition [ i ] = get_symbol ( c , state , 1 ) + c -> one_state [ i ] ; } f -> colorspace = get_symbol ( c , state , 0 ) ; if ( f -> version > 0 ) f -> avctx -> bits_per_raw_sample = get_symbol ( c , state , 0 ) ; <S2SV_StartBug> f -> chroma_planes = get_rac ( c , state ) ; <S2SV_EndBug> <S2SV_StartBug> f -> chroma_h_shift = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> f -> chroma_v_shift = get_symbol ( c , state , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> f -> transparency = get_rac ( c , state ) ; <S2SV_EndBug> f -> plane_count = 2 + f -> transparency ; } if ( f -> colorspace == 0 ) { if ( ! f -> transparency && ! f -> chroma_planes ) { if ( f -> avctx -> bits_per_raw_sample <= 8 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GRAY8 ; else f -> avctx -> pix_fmt = AV_PIX_FMT_GRAY16 ; } else if ( f -> avctx -> bits_per_raw_sample <= 8 && ! f -> transparency ) { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P ; break ; case 0x01 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV440P ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P ; break ; case 0x20 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV411P ; break ; case 0x22 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV410P ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample <= 8 && f -> transparency ) { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA444P ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA422P ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUVA420P ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample == 9 ) { f -> packed_at_lsb = 1 ; switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P9 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P9 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P9 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else if ( f -> avctx -> bits_per_raw_sample == 10 ) { f -> packed_at_lsb = 1 ; switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P10 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P10 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P10 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } else { switch ( 16 * f -> chroma_h_shift + f -> chroma_v_shift ) { case 0x00 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV444P16 ; break ; case 0x10 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV422P16 ; break ; case 0x11 : f -> avctx -> pix_fmt = AV_PIX_FMT_YUV420P16 ; break ; default : av_log ( f -> avctx , AV_LOG_ERROR , \"format<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } } } else if ( f -> colorspace == 1 ) { if ( f -> chroma_h_shift || f -> chroma_v_shift ) { av_log ( f -> avctx , AV_LOG_ERROR , \"chroma<S2SV_blank>subsampling<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>this<S2SV_blank>colorspace\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } if ( f -> avctx -> bits_per_raw_sample == 9 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP9 ; else if ( f -> avctx -> bits_per_raw_sample == 10 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP10 ; else if ( f -> avctx -> bits_per_raw_sample == 12 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP12 ; else if ( f -> avctx -> bits_per_raw_sample == 14 ) f -> avctx -> pix_fmt = AV_PIX_FMT_GBRP14 ; else if ( f -> transparency ) f -> avctx -> pix_fmt = AV_PIX_FMT_RGB32 ; else f -> avctx -> pix_fmt = AV_PIX_FMT_0RGB32 ; } else { av_log ( f -> avctx , AV_LOG_ERROR , \"colorspace<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } av_dlog ( f -> avctx , \"%d<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , f -> chroma_h_shift , f -> chroma_v_shift , f -> avctx -> pix_fmt ) ; if ( f -> version < 2 ) { context_count = read_quant_tables ( c , f -> quant_table ) ; if ( context_count < 0 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"read_quant_table<S2SV_blank>error\\\\n\" ) ; return AVERROR_INVALIDDATA ; } } else if ( f -> version < 3 ) { f -> slice_count = get_symbol ( c , state , 0 ) ; } else { const uint8_t * p = c -> bytestream_end ; for ( f -> slice_count = 0 ; f -> slice_count < MAX_SLICES && 3 < p - c -> bytestream_start ; f -> slice_count ++ ) { int trailer = 3 + 5 * ! ! f -> ec ; int size = AV_RB24 ( p - trailer ) ; if ( size + trailer > p - c -> bytestream_start ) break ; p -= size + trailer ; } } if ( f -> slice_count > ( unsigned ) MAX_SLICES || f -> slice_count <= 0 ) { av_log ( f -> avctx , AV_LOG_ERROR , \"slice<S2SV_blank>count<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\\\\n\" , f -> slice_count ) ; return AVERROR_INVALIDDATA ; } for ( j = 0 ; j < f -> slice_count ; j ++ ) { FFV1Context * fs = f -> slice_context [ j ] ; fs -> ac = f -> ac ; fs -> packed_at_lsb = f -> packed_at_lsb ; fs -> slice_damaged = 0 ; if ( f -> version == 2 ) { fs -> slice_x = get_symbol ( c , state , 0 ) * f -> width ; fs -> slice_y = get_symbol ( c , state , 0 ) * f -> height ; fs -> slice_width = ( get_symbol ( c , state , 0 ) + 1 ) * f -> width + fs -> slice_x ; fs -> slice_height = ( get_symbol ( c , state , 0 ) + 1 ) * f -> height + fs -> slice_y ; fs -> slice_x /= f -> num_h_slices ; fs -> slice_y /= f -> num_v_slices ; fs -> slice_width = fs -> slice_width / f -> num_h_slices - fs -> slice_x ; fs -> slice_height = fs -> slice_height / f -> num_v_slices - fs -> slice_y ; if ( ( unsigned ) fs -> slice_width > f -> width || ( unsigned ) fs -> slice_height > f -> height ) return AVERROR_INVALIDDATA ; if ( ( unsigned ) fs -> slice_x + ( uint64_t ) fs -> slice_width > f -> width || ( unsigned ) fs -> slice_y + ( uint64_t ) fs -> slice_height > f -> height ) return AVERROR_INVALIDDATA ; } for ( i = 0 ; i < f -> plane_count ; i ++ ) { PlaneContext * const p = & fs -> plane [ i ] ; if ( f -> version == 2 ) { int idx = get_symbol ( c , state , 0 ) ; if ( idx > ( unsigned ) f -> quant_table_count ) { av_log ( f -> avctx , AV_LOG_ERROR , \"quant_table_index<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" ) ; return AVERROR_INVALIDDATA ; } p -> quant_table_index = idx ; memcpy ( p -> quant_table , f -> quant_tables [ idx ] , sizeof ( p -> quant_table ) ) ; context_count = f -> context_count [ idx ] ; } else { memcpy ( p -> quant_table , f -> quant_table , sizeof ( p -> quant_table ) ) ; } if ( f -> version <= 2 ) { av_assert0 ( context_count >= 0 ) ; if ( p -> context_count < context_count ) { av_freep ( & p -> state ) ; av_freep ( & p -> vlc_state ) ; } p -> context_count = context_count ; } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) { int chroma_planes , chroma_h_shift , chroma_v_shift , transparency ; <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> chroma_planes = get_rac <S2SV_ModStart> state ) ; <S2SV_ModEnd> chroma_h_shift = get_symbol <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> chroma_v_shift = get_symbol <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> transparency = get_rac <S2SV_ModStart> , state ) ; if ( f -> plane_count ) { if ( chroma_planes != f -> chroma_planes || chroma_h_shift != f -> chroma_h_shift || chroma_v_shift != f -> chroma_v_shift || transparency != f -> transparency ) { av_log ( f -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>change<S2SV_blank>of<S2SV_blank>global<S2SV_blank>parameters\\\\n\" ) ; return AVERROR_INVALIDDATA ; } } f -> chroma_planes = chroma_planes ; f -> chroma_h_shift = chroma_h_shift ; f -> chroma_v_shift = chroma_v_shift ; f -> transparency = transparency\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3181\n\n```\nCWE-119 static int magicmouse_raw_event ( struct hid_device * hdev , struct hid_report * report , u8 * data , int size ) { struct magicmouse_sc * msc = hid_get_drvdata ( hdev ) ; struct input_dev * input = msc -> input ; int x = 0 , y = 0 , ii , clicks = 0 , npoints ; switch ( data [ 0 ] ) { case TRACKPAD_REPORT_ID : if ( size < 4 || ( ( size - 4 ) % 9 ) != 0 ) return 0 ; npoints = ( size - 4 ) / 9 ; <S2SV_StartBug> msc -> ntouches = 0 ; <S2SV_EndBug> for ( ii = 0 ; ii < npoints ; ii ++ ) magicmouse_emit_touch ( msc , ii , data + ii * 9 + 4 ) ; clicks = data [ 1 ] ; break ; case MOUSE_REPORT_ID : if ( size < 6 || ( ( size - 6 ) % 8 ) != 0 ) return 0 ; <S2SV_StartBug> npoints = ( size - 6 ) / 8 ; <S2SV_EndBug> msc -> ntouches = 0 ; for ( ii = 0 ; ii < npoints ; ii ++ ) magicmouse_emit_touch ( msc , ii , data + ii * 8 + 6 ) ; x = ( int ) ( ( ( data [ 3 ] & 0x0c ) << 28 ) | ( data [ 1 ] << 22 ) ) >> 22 ; y = ( int ) ( ( ( data [ 3 ] & 0x30 ) << 26 ) | ( data [ 2 ] << 22 ) ) >> 22 ; clicks = data [ 3 ] ; break ; case DOUBLE_REPORT_ID : magicmouse_raw_event ( hdev , report , data + 2 , data [ 1 ] ) ; magicmouse_raw_event ( hdev , report , data + 2 + data [ 1 ] , size - 2 - data [ 1 ] ) ; break ; default : return 0 ; } if ( input -> id . product == USB_DEVICE_ID_APPLE_MAGICMOUSE ) { magicmouse_emit_buttons ( msc , clicks & 3 ) ; input_report_rel ( input , REL_X , x ) ; input_report_rel ( input , REL_Y , y ) ; } else { input_report_key ( input , BTN_MOUSE , clicks & 1 ) ; input_mt_report_pointer_emulation ( input , true ) ; } input_sync ( input ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> / 9 ; if ( npoints > 15 ) { hid_warn ( hdev , \"invalid<S2SV_blank>size<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>for<S2SV_blank>TRACKPAD_REPORT_ID\\\\n\" , size ) ; return 0 ; } <S2SV_ModStart> / 8 ; if ( npoints > 15 ) { hid_warn ( hdev , \"invalid<S2SV_blank>size<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>for<S2SV_blank>MOUSE_REPORT_ID\\\\n\" , size ) ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15102\n\n```\nCWE-476 static int tower_probe ( struct usb_interface * interface , const struct usb_device_id * id ) { struct device * idev = & interface -> dev ; struct usb_device * udev = interface_to_usbdev ( interface ) ; struct lego_usb_tower * dev = NULL ; struct usb_host_interface * iface_desc ; struct usb_endpoint_descriptor * endpoint ; struct tower_get_version_reply get_version_reply ; int i ; int retval = - ENOMEM ; int result ; dev = kmalloc ( sizeof ( struct lego_usb_tower ) , GFP_KERNEL ) ; if ( ! dev ) goto exit ; mutex_init ( & dev -> lock ) ; dev -> udev = udev ; dev -> open_count = 0 ; dev -> read_buffer = NULL ; dev -> read_buffer_length = 0 ; dev -> read_packet_length = 0 ; spin_lock_init ( & dev -> read_buffer_lock ) ; dev -> packet_timeout_jiffies = msecs_to_jiffies ( packet_timeout ) ; dev -> read_last_arrival = jiffies ; init_waitqueue_head ( & dev -> read_wait ) ; init_waitqueue_head ( & dev -> write_wait ) ; dev -> interrupt_in_buffer = NULL ; dev -> interrupt_in_endpoint = NULL ; dev -> interrupt_in_urb = NULL ; dev -> interrupt_in_running = 0 ; dev -> interrupt_in_done = 0 ; dev -> interrupt_out_buffer = NULL ; dev -> interrupt_out_endpoint = NULL ; dev -> interrupt_out_urb = NULL ; dev -> interrupt_out_busy = 0 ; iface_desc = interface -> cur_altsetting ; for ( i = 0 ; i < iface_desc -> desc . bNumEndpoints ; ++ i ) { endpoint = & iface_desc -> endpoint [ i ] . desc ; if ( usb_endpoint_xfer_int ( endpoint ) ) { if ( usb_endpoint_dir_in ( endpoint ) ) dev -> interrupt_in_endpoint = endpoint ; else dev -> interrupt_out_endpoint = endpoint ; } } if ( dev -> interrupt_in_endpoint == NULL ) { dev_err ( idev , \"interrupt<S2SV_blank>in<S2SV_blank>endpoint<S2SV_blank>not<S2SV_blank>found\\\\n\" ) ; goto error ; } if ( dev -> interrupt_out_endpoint == NULL ) { dev_err ( idev , \"interrupt<S2SV_blank>out<S2SV_blank>endpoint<S2SV_blank>not<S2SV_blank>found\\\\n\" ) ; goto error ; } dev -> read_buffer = kmalloc ( read_buffer_size , GFP_KERNEL ) ; if ( ! dev -> read_buffer ) goto error ; dev -> interrupt_in_buffer = kmalloc ( usb_endpoint_maxp ( dev -> interrupt_in_endpoint ) , GFP_KERNEL ) ; if ( ! dev -> interrupt_in_buffer ) goto error ; dev -> interrupt_in_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! dev -> interrupt_in_urb ) goto error ; dev -> interrupt_out_buffer = kmalloc ( write_buffer_size , GFP_KERNEL ) ; if ( ! dev -> interrupt_out_buffer ) goto error ; dev -> interrupt_out_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! dev -> interrupt_out_urb ) goto error ; dev -> interrupt_in_interval = interrupt_in_interval ? interrupt_in_interval : dev -> interrupt_in_endpoint -> bInterval ; dev -> interrupt_out_interval = interrupt_out_interval ? interrupt_out_interval : dev -> interrupt_out_endpoint -> bInterval ; <S2SV_StartBug> usb_set_intfdata ( interface , dev ) ; <S2SV_EndBug> retval = usb_register_dev ( interface , & tower_class ) ; if ( retval ) { dev_err ( idev , \"Not<S2SV_blank>able<S2SV_blank>to<S2SV_blank>get<S2SV_blank>a<S2SV_blank>minor<S2SV_blank>for<S2SV_blank>this<S2SV_blank>device.\\\\n\" ) ; usb_set_intfdata ( interface , NULL ) ; goto error ; } dev -> minor = interface -> minor ; dev_info ( & interface -> dev , \"LEGO<S2SV_blank>USB<S2SV_blank>Tower<S2SV_blank>#%d<S2SV_blank>now<S2SV_blank>attached<S2SV_blank>to<S2SV_blank>major<S2SV_blank>\" \"%d<S2SV_blank>minor<S2SV_blank>%d\\\\n\" , ( dev -> minor - LEGO_USB_TOWER_MINOR_BASE ) , USB_MAJOR , dev -> minor ) ; result = usb_control_msg ( udev , usb_rcvctrlpipe ( udev , 0 ) , LEGO_USB_TOWER_REQUEST_GET_VERSION , USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE , 0 , 0 , & get_version_reply , sizeof ( get_version_reply ) , 1000 ) ; if ( result < 0 ) { dev_err ( idev , \"LEGO<S2SV_blank>USB<S2SV_blank>Tower<S2SV_blank>get<S2SV_blank>version<S2SV_blank>control<S2SV_blank>request<S2SV_blank>failed\\\\n\" ) ; retval = result ; goto error ; } dev_info ( & interface -> dev , \"LEGO<S2SV_blank>USB<S2SV_blank>Tower<S2SV_blank>firmware<S2SV_blank>version<S2SV_blank>is<S2SV_blank>%d.%d<S2SV_blank>\" \"build<S2SV_blank>%d\\\\n\" , get_version_reply . major , get_version_reply . minor , le16_to_cpu ( get_version_reply . build_no ) ) ; <S2SV_StartBug> exit : <S2SV_EndBug> return retval ; error : tower_delete ( dev ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> bInterval ; <S2SV_ModEnd> result = usb_control_msg <S2SV_ModStart> ) ) ; usb_set_intfdata ( interface , dev ) ; retval = usb_register_dev ( interface , & tower_class ) ; if ( retval ) { dev_err ( idev , \"Not<S2SV_blank>able<S2SV_blank>to<S2SV_blank>get<S2SV_blank>a<S2SV_blank>minor<S2SV_blank>for<S2SV_blank>this<S2SV_blank>device.\\\\n\" ) ; usb_set_intfdata ( interface , NULL ) ; goto error ; } dev -> minor = interface -> minor ; dev_info ( & interface -> dev , \"LEGO<S2SV_blank>USB<S2SV_blank>Tower<S2SV_blank>#%d<S2SV_blank>now<S2SV_blank>attached<S2SV_blank>to<S2SV_blank>major<S2SV_blank>\" \"%d<S2SV_blank>minor<S2SV_blank>%d\\\\n\" , ( dev -> minor - LEGO_USB_TOWER_MINOR_BASE ) , USB_MAJOR , dev -> minor ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-9760\n\n```\nCWE-120 void irc_server_set_prefix_modes_chars ( struct t_irc_server * server , const char * prefix ) { char * pos ; <S2SV_StartBug> int i , length_modes , length_chars ; <S2SV_EndBug> if ( ! server || ! prefix ) <S2SV_StartBug> return ; <S2SV_EndBug> if ( server -> prefix_modes ) { free ( server -> prefix_modes ) ; server -> prefix_modes = NULL ; } if ( server -> prefix_chars ) { free ( server -> prefix_chars ) ; server -> prefix_chars = NULL ; } pos = strchr ( prefix , ')' ) ; if ( pos ) { server -> prefix_modes = weechat_strndup ( prefix + 1 , pos - prefix - 1 ) ; if ( server -> prefix_modes ) { pos ++ ; length_modes = strlen ( server -> prefix_modes ) ; length_chars = strlen ( pos ) ; server -> prefix_chars = malloc ( length_modes + 1 ) ; if ( server -> prefix_chars ) { for ( i = 0 ; i < length_modes ; i ++ ) { server -> prefix_chars [ i ] = ( i < length_chars ) ? pos [ i ] : '<S2SV_blank>' ; } server -> prefix_chars [ length_modes ] = '\\\\0' ; } else { free ( server -> prefix_modes ) ; server -> prefix_modes = NULL ; } } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i , old_length_chars , <S2SV_ModStart> prefix ) return ; old_length_chars = ( server -> prefix_chars ) ? strlen ( server -> prefix_chars ) : 0 <S2SV_ModStart> } } } length_chars = ( server -> prefix_chars ) ? strlen ( server -> prefix_chars ) : 0 ; if ( server -> prefix_chars && ( length_chars != old_length_chars ) ) irc_nick_realloc_prefixes ( server , old_length_chars , length_chars ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2544\n\n```\nCWE-362 static void queue_delete ( struct snd_seq_queue * q ) { <S2SV_StartBug> snd_seq_timer_stop ( q -> timer ) ; <S2SV_EndBug> <S2SV_StartBug> snd_seq_timer_close ( q ) ; <S2SV_EndBug> snd_use_lock_sync ( & q -> use_lock ) ; snd_seq_prioq_delete ( & q -> tickq ) ; snd_seq_prioq_delete ( & q -> timeq ) ; snd_seq_timer_delete ( & q -> timer ) ; kfree ( q ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> q ) { mutex_lock ( & q -> timer_mutex ) ; <S2SV_ModStart> snd_seq_timer_close ( q ) ; mutex_unlock ( & q -> timer_mutex\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15274\n\n```\nCWE-476 SYSCALL_DEFINE5 ( add_key , const char __user * , _type , const char __user * , _description , const void __user * , _payload , size_t , plen , key_serial_t , ringid ) { key_ref_t keyring_ref , key_ref ; char type [ 32 ] , * description ; void * payload ; long ret ; ret = - EINVAL ; if ( plen > 1024 * 1024 - 1 ) goto error ; ret = key_get_type_from_user ( type , _type , sizeof ( type ) ) ; if ( ret < 0 ) goto error ; description = NULL ; if ( _description ) { description = strndup_user ( _description , KEY_MAX_DESC_SIZE ) ; if ( IS_ERR ( description ) ) { ret = PTR_ERR ( description ) ; goto error ; } if ( ! * description ) { kfree ( description ) ; description = NULL ; } else if ( ( description [ 0 ] == '.' ) && ( strncmp ( type , \"keyring\" , 7 ) == 0 ) ) { ret = - EPERM ; goto error2 ; } } payload = NULL ; <S2SV_StartBug> if ( _payload ) { <S2SV_EndBug> ret = - ENOMEM ; payload = kvmalloc ( plen , GFP_KERNEL ) ; if ( ! payload ) goto error2 ; ret = - EFAULT ; if ( copy_from_user ( payload , _payload , plen ) != 0 ) goto error3 ; } keyring_ref = lookup_user_key ( ringid , KEY_LOOKUP_CREATE , KEY_NEED_WRITE ) ; if ( IS_ERR ( keyring_ref ) ) { ret = PTR_ERR ( keyring_ref ) ; goto error3 ; } key_ref = key_create_or_update ( keyring_ref , type , description , payload , plen , KEY_PERM_UNDEF , KEY_ALLOC_IN_QUOTA ) ; if ( ! IS_ERR ( key_ref ) ) { ret = key_ref_to_ptr ( key_ref ) -> serial ; key_ref_put ( key_ref ) ; } else { ret = PTR_ERR ( key_ref ) ; } key_ref_put ( keyring_ref ) ; error3 : kvfree ( payload ) ; error2 : kfree ( description ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( plen <S2SV_ModEnd> ) { ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static void free_huge_page ( struct page * page ) { struct hstate * h = page_hstate ( page ) ; int nid = page_to_nid ( page ) ; <S2SV_StartBug> struct address_space * mapping ; <S2SV_EndBug> mapping = ( struct address_space * ) page_private ( page ) ; set_page_private ( page , 0 ) ; page -> mapping = NULL ; BUG_ON ( page_count ( page ) ) ; BUG_ON ( page_mapcount ( page ) ) ; INIT_LIST_HEAD ( & page -> lru ) ; spin_lock ( & hugetlb_lock ) ; if ( h -> surplus_huge_pages_node [ nid ] && huge_page_order ( h ) < MAX_ORDER ) { update_and_free_page ( h , page ) ; h -> surplus_huge_pages -- ; h -> surplus_huge_pages_node [ nid ] -- ; } else { enqueue_huge_page ( h , page ) ; } spin_unlock ( & hugetlb_lock ) ; <S2SV_StartBug> if ( mapping ) <S2SV_EndBug> hugetlb_put_quota ( mapping , 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct hugepage_subpool * spool = ( struct hugepage_subpool <S2SV_ModEnd> * ) page_private <S2SV_ModStart> hugetlb_lock ) ; hugepage_subpool_put_pages ( spool <S2SV_ModEnd> , 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1826\n\n```\nCWE-000 static struct sk_buff * xfrm_state_netlink ( struct sk_buff * in_skb , struct xfrm_state * x , u32 seq ) { struct xfrm_dump_info info ; <S2SV_StartBug> struct sk_buff * skb ; <S2SV_EndBug> skb = nlmsg_new ( NLMSG_DEFAULT_SIZE , GFP_ATOMIC ) ; if ( ! skb ) return ERR_PTR ( - ENOMEM ) ; info . in_skb = in_skb ; info . out_skb = skb ; info . nlmsg_seq = seq ; info . nlmsg_flags = 0 ; <S2SV_StartBug> if ( dump_one_state ( x , 0 , & info ) ) { <S2SV_EndBug> kfree_skb ( skb ) ; <S2SV_StartBug> return NULL ; <S2SV_EndBug> } return skb ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk_buff * skb ; int err <S2SV_ModStart> = 0 ; err = <S2SV_ModEnd> dump_one_state ( x <S2SV_ModStart> & info ) ; if ( err <S2SV_ModStart> ) ; return ERR_PTR ( err ) <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 bool inode_owner_or_capable ( const struct inode * inode ) <S2SV_StartBug> { <S2SV_EndBug> if ( uid_eq ( current_fsuid ( ) , inode -> i_uid ) ) return true ; <S2SV_StartBug> if ( inode_capable ( inode , CAP_FOWNER ) ) <S2SV_EndBug> return true ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode ) { struct user_namespace * ns ; <S2SV_ModStart> return true ; ns = current_user_ns ( ) ; if ( ns_capable ( ns , CAP_FOWNER ) && kuid_has_mapping ( ns , inode -> i_uid <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000050\n\n```\nCWE-119 static int start_decoder ( vorb * f ) { uint8 header [ 6 ] , x , y ; int len , i , j , k , max_submaps = 0 ; int longest_floorlist = 0 ; if ( ! start_page ( f ) ) return FALSE ; if ( ! ( f -> page_flag & PAGEFLAG_first_page ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> page_flag & PAGEFLAG_last_page ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> page_flag & PAGEFLAG_continued_packet ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> segment_count != 1 ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> segments [ 0 ] != 30 ) return error ( f , VORBIS_invalid_first_page ) ; if ( get8 ( f ) != VORBIS_packet_id ) return error ( f , VORBIS_invalid_first_page ) ; if ( ! getn ( f , header , 6 ) ) return error ( f , VORBIS_unexpected_eof ) ; if ( ! vorbis_validate ( header ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( get32 ( f ) != 0 ) return error ( f , VORBIS_invalid_first_page ) ; f -> channels = get8 ( f ) ; if ( ! f -> channels ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> channels > STB_VORBIS_MAX_CHANNELS ) return error ( f , VORBIS_too_many_channels ) ; f -> sample_rate = get32 ( f ) ; if ( ! f -> sample_rate ) return error ( f , VORBIS_invalid_first_page ) ; get32 ( f ) ; get32 ( f ) ; get32 ( f ) ; x = get8 ( f ) ; { int log0 , log1 ; log0 = x & 15 ; log1 = x >> 4 ; f -> blocksize_0 = 1 << log0 ; f -> blocksize_1 = 1 << log1 ; if ( log0 < 6 || log0 > 13 ) return error ( f , VORBIS_invalid_setup ) ; if ( log1 < 6 || log1 > 13 ) return error ( f , VORBIS_invalid_setup ) ; if ( log0 > log1 ) return error ( f , VORBIS_invalid_setup ) ; } x = get8 ( f ) ; if ( ! ( x & 1 ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( ! start_page ( f ) ) return FALSE ; if ( ! start_packet ( f ) ) return FALSE ; do { len = next_segment ( f ) ; skip ( f , len ) ; f -> bytes_in_seg = 0 ; } while ( len ) ; if ( ! start_packet ( f ) ) return FALSE ; # ifndef STB_VORBIS_NO_PUSHDATA_API if ( IS_PUSH_MODE ( f ) ) { if ( ! is_whole_packet_present ( f , TRUE ) ) { if ( f -> error == VORBIS_invalid_stream ) f -> error = VORBIS_invalid_setup ; return FALSE ; } } # endif crc32_init ( ) ; if ( get8_packet ( f ) != VORBIS_packet_setup ) return error ( f , VORBIS_invalid_setup ) ; for ( i = 0 ; i < 6 ; ++ i ) header [ i ] = get8_packet ( f ) ; if ( ! vorbis_validate ( header ) ) return error ( f , VORBIS_invalid_setup ) ; f -> codebook_count = get_bits ( f , 8 ) + 1 ; f -> codebooks = ( Codebook * ) setup_malloc ( f , sizeof ( * f -> codebooks ) * f -> codebook_count ) ; if ( f -> codebooks == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> codebooks , 0 , sizeof ( * f -> codebooks ) * f -> codebook_count ) ; for ( i = 0 ; i < f -> codebook_count ; ++ i ) { uint32 * values ; int ordered , sorted_count ; int total = 0 ; uint8 * lengths ; Codebook * c = f -> codebooks + i ; CHECK ( f ) ; x = get_bits ( f , 8 ) ; if ( x != 0x42 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; if ( x != 0x43 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; if ( x != 0x56 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; c -> dimensions = ( get_bits ( f , 8 ) << 8 ) + x ; x = get_bits ( f , 8 ) ; y = get_bits ( f , 8 ) ; c -> entries = ( get_bits ( f , 8 ) << 16 ) + ( y << 8 ) + x ; ordered = get_bits ( f , 1 ) ; c -> sparse = ordered ? 0 : get_bits ( f , 1 ) ; if ( c -> dimensions == 0 && c -> entries != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( c -> sparse ) lengths = ( uint8 * ) setup_temp_malloc ( f , c -> entries ) ; else lengths = c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> entries ) ; if ( ! lengths ) return error ( f , VORBIS_outofmem ) ; if ( ordered ) { int current_entry = 0 ; int current_length = get_bits ( f , 5 ) + 1 ; while ( current_entry < c -> entries ) { int limit = c -> entries - current_entry ; int n = get_bits ( f , ilog ( limit ) ) ; if ( current_entry + n > ( int ) c -> entries ) { return error ( f , VORBIS_invalid_setup ) ; } memset ( lengths + current_entry , current_length , n ) ; current_entry += n ; ++ current_length ; } } else { for ( j = 0 ; j < c -> entries ; ++ j ) { int present = c -> sparse ? get_bits ( f , 1 ) : 1 ; if ( present ) { lengths [ j ] = get_bits ( f , 5 ) + 1 ; ++ total ; if ( lengths [ j ] == 32 ) return error ( f , VORBIS_invalid_setup ) ; } else { lengths [ j ] = NO_CODE ; } } } if ( c -> sparse && total >= c -> entries >> 2 ) { if ( c -> entries > ( int ) f -> setup_temp_memory_required ) f -> setup_temp_memory_required = c -> entries ; c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> entries ) ; if ( c -> codeword_lengths == NULL ) return error ( f , VORBIS_outofmem ) ; memcpy ( c -> codeword_lengths , lengths , c -> entries ) ; setup_temp_free ( f , lengths , c -> entries ) ; lengths = c -> codeword_lengths ; c -> sparse = 0 ; } if ( c -> sparse ) { sorted_count = total ; } else { sorted_count = 0 ; # ifndef STB_VORBIS_NO_HUFFMAN_BINARY_SEARCH for ( j = 0 ; j < c -> entries ; ++ j ) if ( lengths [ j ] > STB_VORBIS_FAST_HUFFMAN_LENGTH && lengths [ j ] != NO_CODE ) ++ sorted_count ; # endif } c -> sorted_entries = sorted_count ; values = NULL ; CHECK ( f ) ; if ( ! c -> sparse ) { c -> codewords = ( uint32 * ) setup_malloc ( f , sizeof ( c -> codewords [ 0 ] ) * c -> entries ) ; if ( ! c -> codewords ) return error ( f , VORBIS_outofmem ) ; } else { unsigned int size ; if ( c -> sorted_entries ) { c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> sorted_entries ) ; if ( ! c -> codeword_lengths ) return error ( f , VORBIS_outofmem ) ; c -> codewords = ( uint32 * ) setup_temp_malloc ( f , sizeof ( * c -> codewords ) * c -> sorted_entries ) ; if ( ! c -> codewords ) return error ( f , VORBIS_outofmem ) ; values = ( uint32 * ) setup_temp_malloc ( f , sizeof ( * values ) * c -> sorted_entries ) ; if ( ! values ) return error ( f , VORBIS_outofmem ) ; } size = c -> entries + ( sizeof ( * c -> codewords ) + sizeof ( * values ) ) * c -> sorted_entries ; if ( size > f -> setup_temp_memory_required ) f -> setup_temp_memory_required = size ; } if ( ! compute_codewords ( c , lengths , c -> entries , values ) ) { if ( c -> sparse ) setup_temp_free ( f , values , 0 ) ; return error ( f , VORBIS_invalid_setup ) ; } if ( c -> sorted_entries ) { c -> sorted_codewords = ( uint32 * ) setup_malloc ( f , sizeof ( * c -> sorted_codewords ) * ( c -> sorted_entries + 1 ) ) ; if ( c -> sorted_codewords == NULL ) return error ( f , VORBIS_outofmem ) ; c -> sorted_values = ( int * ) setup_malloc ( f , sizeof ( * c -> sorted_values ) * ( c -> sorted_entries + 1 ) ) ; if ( c -> sorted_values == NULL ) return error ( f , VORBIS_outofmem ) ; ++ c -> sorted_values ; c -> sorted_values [ - 1 ] = - 1 ; compute_sorted_huffman ( c , lengths , values ) ; } if ( c -> sparse ) { setup_temp_free ( f , values , sizeof ( * values ) * c -> sorted_entries ) ; setup_temp_free ( f , c -> codewords , sizeof ( * c -> codewords ) * c -> sorted_entries ) ; setup_temp_free ( f , lengths , c -> entries ) ; c -> codewords = NULL ; } compute_accelerated_huffman ( c ) ; CHECK ( f ) ; c -> lookup_type = get_bits ( f , 4 ) ; if ( c -> lookup_type > 2 ) return error ( f , VORBIS_invalid_setup ) ; if ( c -> lookup_type > 0 ) { uint16 * mults ; c -> minimum_value = float32_unpack ( get_bits ( f , 32 ) ) ; c -> delta_value = float32_unpack ( get_bits ( f , 32 ) ) ; c -> value_bits = get_bits ( f , 4 ) + 1 ; c -> sequence_p = get_bits ( f , 1 ) ; if ( c -> lookup_type == 1 ) { c -> lookup_values = lookup1_values ( c -> entries , c -> dimensions ) ; } else { c -> lookup_values = c -> entries * c -> dimensions ; } if ( c -> lookup_values == 0 ) return error ( f , VORBIS_invalid_setup ) ; mults = ( uint16 * ) setup_temp_malloc ( f , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; if ( mults == NULL ) return error ( f , VORBIS_outofmem ) ; for ( j = 0 ; j < ( int ) c -> lookup_values ; ++ j ) { int q = get_bits ( f , c -> value_bits ) ; if ( q == EOP ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_invalid_setup ) ; } mults [ j ] = q ; } # ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK if ( c -> lookup_type == 1 ) { int len , sparse = c -> sparse ; float last = 0 ; if ( sparse ) { if ( c -> sorted_entries == 0 ) goto skip ; c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> sorted_entries * c -> dimensions ) ; } else c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> entries * c -> dimensions ) ; if ( c -> multiplicands == NULL ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_outofmem ) ; } len = sparse ? c -> sorted_entries : c -> entries ; for ( j = 0 ; j < len ; ++ j ) { unsigned int z = sparse ? c -> sorted_values [ j ] : j ; unsigned int div = 1 ; for ( k = 0 ; k < c -> dimensions ; ++ k ) { int off = ( z / div ) % c -> lookup_values ; float val = mults [ off ] ; val = mults [ off ] * c -> delta_value + c -> minimum_value + last ; c -> multiplicands [ j * c -> dimensions + k ] = val ; if ( c -> sequence_p ) last = val ; if ( k + 1 < c -> dimensions ) { if ( div > UINT_MAX / ( unsigned int ) c -> lookup_values ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_invalid_setup ) ; } div *= c -> lookup_values ; } } } c -> lookup_type = 2 ; } else # endif { float last = 0 ; CHECK ( f ) ; c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> lookup_values ) ; if ( c -> multiplicands == NULL ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_outofmem ) ; } for ( j = 0 ; j < ( int ) c -> lookup_values ; ++ j ) { float val = mults [ j ] * c -> delta_value + c -> minimum_value + last ; c -> multiplicands [ j ] = val ; if ( c -> sequence_p ) last = val ; } } # ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK skip : ; # endif setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; CHECK ( f ) ; } CHECK ( f ) ; } x = get_bits ( f , 6 ) + 1 ; for ( i = 0 ; i < x ; ++ i ) { uint32 z = get_bits ( f , 16 ) ; if ( z != 0 ) return error ( f , VORBIS_invalid_setup ) ; } f -> floor_count = get_bits ( f , 6 ) + 1 ; f -> floor_config = ( Floor * ) setup_malloc ( f , f -> floor_count * sizeof ( * f -> floor_config ) ) ; if ( f -> floor_config == NULL ) return error ( f , VORBIS_outofmem ) ; for ( i = 0 ; i < f -> floor_count ; ++ i ) { f -> floor_types [ i ] = get_bits ( f , 16 ) ; if ( f -> floor_types [ i ] > 1 ) return error ( f , VORBIS_invalid_setup ) ; if ( f -> floor_types [ i ] == 0 ) { Floor0 * g = & f -> floor_config [ i ] . floor0 ; g -> order = get_bits ( f , 8 ) ; g -> rate = get_bits ( f , 16 ) ; g -> bark_map_size = get_bits ( f , 16 ) ; g -> amplitude_bits = get_bits ( f , 6 ) ; g -> amplitude_offset = get_bits ( f , 8 ) ; g -> number_of_books = get_bits ( f , 4 ) + 1 ; for ( j = 0 ; j < g -> number_of_books ; ++ j ) g -> book_list [ j ] = get_bits ( f , 8 ) ; return error ( f , VORBIS_feature_not_supported ) ; } else { stbv__floor_ordering p [ 31 * 8 + 2 ] ; Floor1 * g = & f -> floor_config [ i ] . floor1 ; int max_class = - 1 ; g -> partitions = get_bits ( f , 5 ) ; for ( j = 0 ; j < g -> partitions ; ++ j ) { g -> partition_class_list [ j ] = get_bits ( f , 4 ) ; if ( g -> partition_class_list [ j ] > max_class ) max_class = g -> partition_class_list [ j ] ; } for ( j = 0 ; j <= max_class ; ++ j ) { g -> class_dimensions [ j ] = get_bits ( f , 3 ) + 1 ; g -> class_subclasses [ j ] = get_bits ( f , 2 ) ; if ( g -> class_subclasses [ j ] ) { g -> class_masterbooks [ j ] = get_bits ( f , 8 ) ; if ( g -> class_masterbooks [ j ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } for ( k = 0 ; k < 1 << g -> class_subclasses [ j ] ; ++ k ) { g -> subclass_books [ j ] [ k ] = get_bits ( f , 8 ) - 1 ; if ( g -> subclass_books [ j ] [ k ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } } g -> floor1_multiplier = get_bits ( f , 2 ) + 1 ; g -> rangebits = get_bits ( f , 4 ) ; g -> Xlist [ 0 ] = 0 ; g -> Xlist [ 1 ] = 1 << g -> rangebits ; g -> values = 2 ; for ( j = 0 ; j < g -> partitions ; ++ j ) { int c = g -> partition_class_list [ j ] ; for ( k = 0 ; k < g -> class_dimensions [ c ] ; ++ k ) { g -> Xlist [ g -> values ] = get_bits ( f , g -> rangebits ) ; ++ g -> values ; } } for ( j = 0 ; j < g -> values ; ++ j ) { p [ j ] . x = g -> Xlist [ j ] ; p [ j ] . id = j ; } qsort ( p , g -> values , sizeof ( p [ 0 ] ) , point_compare ) ; for ( j = 0 ; j < g -> values ; ++ j ) g -> sorted_order [ j ] = ( uint8 ) p [ j ] . id ; for ( j = 2 ; j < g -> values ; ++ j ) { int low , hi ; neighbors ( g -> Xlist , j , & low , & hi ) ; g -> neighbors [ j ] [ 0 ] = low ; g -> neighbors [ j ] [ 1 ] = hi ; } if ( g -> values > longest_floorlist ) longest_floorlist = g -> values ; } } f -> residue_count = get_bits ( f , 6 ) + 1 ; f -> residue_config = ( Residue * ) setup_malloc ( f , f -> residue_count * sizeof ( f -> residue_config [ 0 ] ) ) ; if ( f -> residue_config == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> residue_config , 0 , f -> residue_count * sizeof ( f -> residue_config [ 0 ] ) ) ; for ( i = 0 ; i < f -> residue_count ; ++ i ) { uint8 residue_cascade [ 64 ] ; Residue * r = f -> residue_config + i ; f -> residue_types [ i ] = get_bits ( f , 16 ) ; if ( f -> residue_types [ i ] > 2 ) return error ( f , VORBIS_invalid_setup ) ; r -> begin = get_bits ( f , 24 ) ; r -> end = get_bits ( f , 24 ) ; if ( r -> end < r -> begin ) return error ( f , VORBIS_invalid_setup ) ; r -> part_size = get_bits ( f , 24 ) + 1 ; r -> classifications = get_bits ( f , 6 ) + 1 ; r -> classbook = get_bits ( f , 8 ) ; if ( r -> classbook >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; for ( j = 0 ; j < r -> classifications ; ++ j ) { uint8 high_bits = 0 ; uint8 low_bits = get_bits ( f , 3 ) ; if ( get_bits ( f , 1 ) ) high_bits = get_bits ( f , 5 ) ; residue_cascade [ j ] = high_bits * 8 + low_bits ; } r -> residue_books = ( short ( * ) [ 8 ] ) setup_malloc ( f , sizeof ( r -> residue_books [ 0 ] ) * r -> classifications ) ; if ( r -> residue_books == NULL ) return error ( f , VORBIS_outofmem ) ; for ( j = 0 ; j < r -> classifications ; ++ j ) { for ( k = 0 ; k < 8 ; ++ k ) { if ( residue_cascade [ j ] & ( 1 << k ) ) { r -> residue_books [ j ] [ k ] = get_bits ( f , 8 ) ; if ( r -> residue_books [ j ] [ k ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } else { r -> residue_books [ j ] [ k ] = - 1 ; } } } r -> classdata = ( uint8 * * ) setup_malloc ( f , sizeof ( * r -> classdata ) * f -> codebooks [ r -> classbook ] . entries ) ; if ( ! r -> classdata ) return error ( f , VORBIS_outofmem ) ; memset ( r -> classdata , 0 , sizeof ( * r -> classdata ) * f -> codebooks [ r -> classbook ] . entries ) ; for ( j = 0 ; j < f -> codebooks [ r -> classbook ] . entries ; ++ j ) { int classwords = f -> codebooks [ r -> classbook ] . dimensions ; int temp = j ; r -> classdata [ j ] = ( uint8 * ) setup_malloc ( f , sizeof ( r -> classdata [ j ] [ 0 ] ) * classwords ) ; if ( r -> classdata [ j ] == NULL ) return error ( f , VORBIS_outofmem ) ; for ( k = classwords - 1 ; k >= 0 ; -- k ) { r -> classdata [ j ] [ k ] = temp % r -> classifications ; temp /= r -> classifications ; } } } f -> mapping_count = get_bits ( f , 6 ) + 1 ; f -> mapping = ( Mapping * ) setup_malloc ( f , f -> mapping_count * sizeof ( * f -> mapping ) ) ; if ( f -> mapping == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> mapping , 0 , f -> mapping_count * sizeof ( * f -> mapping ) ) ; for ( i = 0 ; i < f -> mapping_count ; ++ i ) { Mapping * m = f -> mapping + i ; int mapping_type = get_bits ( f , 16 ) ; if ( mapping_type != 0 ) return error ( f , VORBIS_invalid_setup ) ; m -> chan = ( MappingChannel * ) setup_malloc ( f , f -> channels * sizeof ( * m -> chan ) ) ; if ( m -> chan == NULL ) return error ( f , VORBIS_outofmem ) ; if ( get_bits ( f , 1 ) ) m -> submaps = get_bits ( f , 4 ) + 1 ; else m -> submaps = 1 ; if ( m -> submaps > max_submaps ) max_submaps = m -> submaps ; if ( get_bits ( f , 1 ) ) { m -> coupling_steps = get_bits ( f , 8 ) + 1 ; for ( k = 0 ; k < m -> coupling_steps ; ++ k ) { m -> chan [ k ] . magnitude = get_bits ( f , ilog ( f -> channels - 1 ) ) ; m -> chan [ k ] . angle = get_bits ( f , ilog ( f -> channels - 1 ) ) ; if ( m -> chan [ k ] . magnitude >= f -> channels ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> chan [ k ] . angle >= f -> channels ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> chan [ k ] . magnitude == m -> chan [ k ] . angle ) return error ( f , VORBIS_invalid_setup ) ; } } else m -> coupling_steps = 0 ; if ( get_bits ( f , 2 ) ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> submaps > 1 ) { for ( j = 0 ; j < f -> channels ; ++ j ) { m -> chan [ j ] . mux = get_bits ( f , 4 ) ; if ( m -> chan [ j ] . mux >= m -> submaps ) return error ( f , VORBIS_invalid_setup ) ; } } else for ( j = 0 ; j < f -> channels ; ++ j ) m -> chan [ j ] . mux = 0 ; for ( j = 0 ; j < m -> submaps ; ++ j ) { get_bits ( f , 8 ) ; m -> submap_floor [ j ] = get_bits ( f , 8 ) ; m -> submap_residue [ j ] = get_bits ( f , 8 ) ; if ( m -> submap_floor [ j ] >= f -> floor_count ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> submap_residue [ j ] >= f -> residue_count ) return error ( f , VORBIS_invalid_setup ) ; } } f -> mode_count = get_bits ( f , 6 ) + 1 ; for ( i = 0 ; i < f -> mode_count ; ++ i ) { Mode * m = f -> mode_config + i ; m -> blockflag = get_bits ( f , 1 ) ; m -> windowtype = get_bits ( f , 16 ) ; m -> transformtype = get_bits ( f , 16 ) ; m -> mapping = get_bits ( f , 8 ) ; if ( m -> windowtype != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> transformtype != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> mapping >= f -> mapping_count ) return error ( f , VORBIS_invalid_setup ) ; } flush_packet ( f ) ; f -> previous_length = 0 ; for ( i = 0 ; i < f -> channels ; ++ i ) { f -> channel_buffers [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 ) ; f -> previous_window [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 / 2 ) ; f -> finalY [ i ] = ( int16 * ) setup_malloc ( f , sizeof ( int16 ) * longest_floorlist ) ; if ( f -> channel_buffers [ i ] == NULL || f -> previous_window [ i ] == NULL || f -> finalY [ i ] == NULL ) return error ( f , VORBIS_outofmem ) ; # ifdef STB_VORBIS_NO_DEFER_FLOOR f -> floor_buffers [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 / 2 ) ; if ( f -> floor_buffers [ i ] == NULL ) return error ( f , VORBIS_outofmem ) ; # endif } if ( ! init_blocksize ( f , 0 , f -> blocksize_0 ) ) return FALSE ; if ( ! init_blocksize ( f , 1 , f -> blocksize_1 ) ) return FALSE ; f -> blocksize [ 0 ] = f -> blocksize_0 ; f -> blocksize [ 1 ] = f -> blocksize_1 ; # ifdef STB_VORBIS_DIVIDE_TABLE if ( integer_divide_table [ 1 ] [ 1 ] == 0 ) for ( i = 0 ; i < DIVTAB_NUMER ; ++ i ) for ( j = 1 ; j < DIVTAB_DENOM ; ++ j ) integer_divide_table [ i ] [ j ] = i / j ; # endif { uint32 imdct_mem = ( f -> blocksize_1 * sizeof ( float ) >> 1 ) ; uint32 classify_mem ; int i , max_part_read = 0 ; for ( i = 0 ; i < f -> residue_count ; ++ i ) { Residue * r = f -> residue_config + i ; <S2SV_StartBug> int n_read = r -> end - r -> begin ; <S2SV_EndBug> int part_read = n_read / r -> part_size ; if ( part_read > max_part_read ) max_part_read = part_read ; } # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE classify_mem = f -> channels * ( sizeof ( void * ) + max_part_read * sizeof ( uint8 * ) ) ; # else classify_mem = f -> channels * ( sizeof ( void * ) + max_part_read * sizeof ( int * ) ) ; # endif f -> temp_memory_required = classify_mem ; if ( imdct_mem > f -> temp_memory_required ) f -> temp_memory_required = imdct_mem ; } f -> first_decode = TRUE ; if ( f -> alloc . alloc_buffer ) { assert ( f -> temp_offset == f -> alloc . alloc_buffer_length_in_bytes ) ; if ( f -> setup_offset + sizeof ( * f ) + f -> temp_memory_required > ( unsigned ) f -> temp_offset ) return error ( f , VORBIS_outofmem ) ; } f -> first_audio_page_offset = stb_vorbis_get_file_offset ( f ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + i ; unsigned int actual_size = f -> blocksize_1 / 2 ; unsigned int limit_r_begin = r -> begin < actual_size ? r -> begin : actual_size ; unsigned int limit_r_end = r -> end < actual_size ? r -> end : actual_size ; <S2SV_ModStart> int n_read = limit_r_end - limit_r_begin <S2SV_ModEnd> ; int part_read\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11058\n\n```\nCWE-119 static BOOL rdp_read_font_capability_set ( wStream * s , UINT16 length , rdpSettings * settings ) { WINPR_UNUSED ( settings ) ; <S2SV_StartBug> if ( length > 4 ) <S2SV_EndBug> Stream_Seek_UINT16 ( s ) ; <S2SV_StartBug> if ( length > 6 ) <S2SV_EndBug> Stream_Seek_UINT16 ( s ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( length > 5 <S2SV_ModEnd> ) Stream_Seek_UINT16 ( <S2SV_ModStart> ( length > 7 <S2SV_ModEnd> ) Stream_Seek_UINT16 (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010319\n\n```\nCWE-665 int ParseWave64HeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t total_samples = 0 , infilesize ; Wave64ChunkHeader chunk_header ; Wave64FileHeader filehdr ; WaveHeader WaveHeader ; int format_chunk = 0 ; <S2SV_StartBug> uint32_t bcount ; <S2SV_EndBug> infilesize = DoGetFileSize ( infile ) ; memcpy ( & filehdr , fourcc , 4 ) ; if ( ! DoReadFile ( infile , ( ( char * ) & filehdr ) + 4 , sizeof ( Wave64FileHeader ) - 4 , & bcount ) || bcount != sizeof ( Wave64FileHeader ) - 4 || memcmp ( filehdr . ckID , riff_guid , sizeof ( riff_guid ) ) || memcmp ( filehdr . formType , wave_guid , sizeof ( wave_guid ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & filehdr , sizeof ( filehdr ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackLittleEndianToNative ( & filehdr , Wave64ChunkHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && filehdr . ckSize && filehdr . ckSize + 1 && filehdr . ckSize != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } # endif while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( Wave64ChunkHeader ) , & bcount ) || bcount != sizeof ( Wave64ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( Wave64ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , Wave64ChunkHeaderFormat ) ; chunk_header . ckSize -= sizeof ( chunk_header ) ; if ( ! memcmp ( chunk_header . ckID , fmt_guid , sizeof ( fmt_guid ) ) ) { int supported = TRUE , format ; if ( format_chunk ++ ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } chunk_header . ckSize = ( chunk_header . ckSize + 7 ) & ~ 7L ; if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , ( uint32_t ) chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , ( uint32_t ) chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.W64<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>W64<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! memcmp ( chunk_header . ckID , data_guid , sizeof ( data_guid ) ) ) { if ( ! WaveHeader . NumChannels ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ( config -> qmode & QMODE_IGNORE_LENGTH ) || chunk_header . ckSize <= 0 ) { config -> qmode |= QMODE_IGNORE_LENGTH ; if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { if ( infilesize && infilesize - chunk_header . ckSize > 16777216 ) { error_line ( \"this<S2SV_blank>.W64<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } total_samples = chunk_header . ckSize / WaveHeader . BlockAlign ; if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.W64<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 7 ) & ~ 7L ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.W64<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint32_t bcount ; CLEAR ( WaveHeader )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 <S2SV_StartBug> void unix_notinflight ( struct file * fp ) <S2SV_EndBug> { struct sock * s = unix_get_socket ( fp ) ; spin_lock ( & unix_gc_lock ) ; if ( s ) { struct unix_sock * u = unix_sk ( s ) ; BUG_ON ( list_empty ( & u -> link ) ) ; if ( atomic_long_dec_and_test ( & u -> inflight ) ) list_del_init ( & u -> link ) ; unix_tot_inflight -- ; } <S2SV_StartBug> fp -> f_cred -> user -> unix_inflight -- ; <S2SV_EndBug> spin_unlock ( & unix_gc_lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void unix_notinflight ( struct user_struct * user , <S2SV_ModStart> -- ; } <S2SV_ModEnd> user -> unix_inflight\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14502\n\n```\nCWE-125 static int read_header ( struct archive_read * a , struct archive_entry * entry , char head_type ) { const void * h ; const char * p , * endp ; struct rar * rar ; struct rar_header rar_header ; struct rar_file_header file_header ; int64_t header_size ; unsigned filename_size , end ; char * filename ; char * strp ; char packed_size [ 8 ] ; char unp_size [ 8 ] ; int ttime ; struct archive_string_conv * sconv , * fn_sconv ; unsigned long crc32_val ; int ret = ( ARCHIVE_OK ) , ret2 ; rar = ( struct rar * ) ( a -> format -> data ) ; sconv = rar -> opt_sconv ; if ( sconv == NULL ) { if ( ! rar -> init_default_conversion ) { rar -> sconv_default = archive_string_default_conversion_for_read ( & ( a -> archive ) ) ; rar -> init_default_conversion = 1 ; } sconv = rar -> sconv_default ; } if ( ( h = __archive_read_ahead ( a , 7 , NULL ) ) == NULL ) return ( ARCHIVE_FATAL ) ; p = h ; memcpy ( & rar_header , p , sizeof ( rar_header ) ) ; rar -> file_flags = archive_le16dec ( rar_header . flags ) ; header_size = archive_le16dec ( rar_header . size ) ; if ( header_size < ( int64_t ) sizeof ( file_header ) + 7 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>header<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } crc32_val = crc32 ( 0 , ( const unsigned char * ) p + 2 , 7 - 2 ) ; __archive_read_consume ( a , 7 ) ; if ( ! ( rar -> file_flags & FHD_SOLID ) ) { rar -> compression_method = 0 ; rar -> packed_size = 0 ; rar -> unp_size = 0 ; rar -> mtime = 0 ; rar -> ctime = 0 ; rar -> atime = 0 ; rar -> arctime = 0 ; rar -> mode = 0 ; memset ( & rar -> salt , 0 , sizeof ( rar -> salt ) ) ; rar -> atime = 0 ; rar -> ansec = 0 ; rar -> ctime = 0 ; rar -> cnsec = 0 ; rar -> mtime = 0 ; rar -> mnsec = 0 ; rar -> arctime = 0 ; rar -> arcnsec = 0 ; } else { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"RAR<S2SV_blank>solid<S2SV_blank>archive<S2SV_blank>support<S2SV_blank>unavailable.\" ) ; return ( ARCHIVE_FATAL ) ; } if ( ( h = __archive_read_ahead ( a , ( size_t ) header_size - 7 , NULL ) ) == NULL ) return ( ARCHIVE_FATAL ) ; crc32_val = crc32 ( crc32_val , h , ( unsigned ) ( header_size - 7 ) ) ; if ( ( crc32_val & 0xffff ) != archive_le16dec ( rar_header . crc ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Header<S2SV_blank>CRC<S2SV_blank>error\" ) ; return ( ARCHIVE_FATAL ) ; } p = h ; endp = p + header_size - 7 ; memcpy ( & file_header , p , sizeof ( file_header ) ) ; p += sizeof ( file_header ) ; rar -> compression_method = file_header . method ; ttime = archive_le32dec ( file_header . file_time ) ; rar -> mtime = get_time ( ttime ) ; rar -> file_crc = archive_le32dec ( file_header . file_crc ) ; if ( rar -> file_flags & FHD_PASSWORD ) { archive_entry_set_is_data_encrypted ( entry , 1 ) ; rar -> has_encrypted_entries = 1 ; archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"RAR<S2SV_blank>encryption<S2SV_blank>support<S2SV_blank>unavailable.\" ) ; } if ( rar -> file_flags & FHD_LARGE ) { memcpy ( packed_size , file_header . pack_size , 4 ) ; memcpy ( packed_size + 4 , p , 4 ) ; p += 4 ; memcpy ( unp_size , file_header . unp_size , 4 ) ; memcpy ( unp_size + 4 , p , 4 ) ; p += 4 ; rar -> packed_size = archive_le64dec ( & packed_size ) ; rar -> unp_size = archive_le64dec ( & unp_size ) ; } else { rar -> packed_size = archive_le32dec ( file_header . pack_size ) ; rar -> unp_size = archive_le32dec ( file_header . unp_size ) ; } if ( rar -> packed_size < 0 || rar -> unp_size < 0 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>sizes<S2SV_blank>specified.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> bytes_remaining = rar -> packed_size ; if ( head_type == NEWSUB_HEAD ) { size_t distance = p - ( const char * ) h ; header_size += rar -> packed_size ; if ( ( h = __archive_read_ahead ( a , ( size_t ) header_size - 7 , NULL ) ) == NULL ) return ( ARCHIVE_FATAL ) ; p = h ; endp = p + header_size - 7 ; p += distance ; } filename_size = archive_le16dec ( file_header . name_size ) ; if ( p + filename_size > endp ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>filename<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } if ( rar -> filename_allocated < filename_size * 2 + 2 ) { char * newptr ; size_t newsize = filename_size * 2 + 2 ; newptr = realloc ( rar -> filename , newsize ) ; if ( newptr == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>memory.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> filename = newptr ; rar -> filename_allocated = newsize ; } filename = rar -> filename ; memcpy ( filename , p , filename_size ) ; filename [ filename_size ] = '\\\\0' ; if ( rar -> file_flags & FHD_UNICODE ) { if ( filename_size != strlen ( filename ) ) { unsigned char highbyte , flagbits , flagbyte ; unsigned fn_end , offset ; end = filename_size ; fn_end = filename_size * 2 ; filename_size = 0 ; offset = ( unsigned ) strlen ( filename ) + 1 ; highbyte = * ( p + offset ++ ) ; flagbits = 0 ; flagbyte = 0 ; while ( offset < end && filename_size < fn_end ) { if ( ! flagbits ) { flagbyte = * ( p + offset ++ ) ; flagbits = 8 ; } flagbits -= 2 ; switch ( ( flagbyte >> flagbits ) & 3 ) { case 0 : filename [ filename_size ++ ] = '\\\\0' ; filename [ filename_size ++ ] = * ( p + offset ++ ) ; break ; case 1 : filename [ filename_size ++ ] = highbyte ; filename [ filename_size ++ ] = * ( p + offset ++ ) ; break ; case 2 : filename [ filename_size ++ ] = * ( p + offset + 1 ) ; filename [ filename_size ++ ] = * ( p + offset ) ; offset += 2 ; break ; case 3 : { char extra , high ; uint8_t length = * ( p + offset ++ ) ; if ( length & 0x80 ) { extra = * ( p + offset ++ ) ; high = ( char ) highbyte ; } else extra = high = 0 ; length = ( length & 0x7f ) + 2 ; while ( length && filename_size < fn_end ) { unsigned cp = filename_size >> 1 ; filename [ filename_size ++ ] = high ; filename [ filename_size ++ ] = p [ cp ] + extra ; length -- ; } } break ; } } if ( filename_size > fn_end ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>filename\" ) ; return ( ARCHIVE_FATAL ) ; } filename [ filename_size ++ ] = '\\\\0' ; <S2SV_StartBug> filename [ filename_size ++ ] = '\\\\0' ; <S2SV_EndBug> if ( rar -> sconv_utf16be == NULL ) { rar -> sconv_utf16be = archive_string_conversion_from_charset ( & a -> archive , \"UTF-16BE\" , 1 ) ; if ( rar -> sconv_utf16be == NULL ) return ( ARCHIVE_FATAL ) ; } fn_sconv = rar -> sconv_utf16be ; strp = filename ; while ( memcmp ( strp , \"\\\\x00\\\\x00\" , 2 ) ) { if ( ! memcmp ( strp , \"\\\\x00\\\\\\\\\" , 2 ) ) * ( strp + 1 ) = '/' ; strp += 2 ; } p += offset ; } else { if ( rar -> sconv_utf8 == NULL ) { rar -> sconv_utf8 = archive_string_conversion_from_charset ( & a -> archive , \"UTF-8\" , 1 ) ; if ( rar -> sconv_utf8 == NULL ) return ( ARCHIVE_FATAL ) ; } fn_sconv = rar -> sconv_utf8 ; while ( ( strp = strchr ( filename , '\\\\\\\\' ) ) != NULL ) * strp = '/' ; p += filename_size ; } } else { fn_sconv = sconv ; while ( ( strp = strchr ( filename , '\\\\\\\\' ) ) != NULL ) * strp = '/' ; p += filename_size ; } if ( rar -> filename_save && filename_size == rar -> filename_save_size && ! memcmp ( rar -> filename , rar -> filename_save , filename_size + 1 ) ) { __archive_read_consume ( a , header_size - 7 ) ; rar -> cursor ++ ; if ( rar -> cursor >= rar -> nodes ) { rar -> nodes ++ ; if ( ( rar -> dbo = realloc ( rar -> dbo , sizeof ( * rar -> dbo ) * rar -> nodes ) ) == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>memory.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> dbo [ rar -> cursor ] . header_size = header_size ; rar -> dbo [ rar -> cursor ] . start_offset = - 1 ; rar -> dbo [ rar -> cursor ] . end_offset = - 1 ; } if ( rar -> dbo [ rar -> cursor ] . start_offset < 0 ) { rar -> dbo [ rar -> cursor ] . start_offset = a -> filter -> position ; rar -> dbo [ rar -> cursor ] . end_offset = rar -> dbo [ rar -> cursor ] . start_offset + rar -> packed_size ; } return ret ; } rar -> filename_save = ( char * ) realloc ( rar -> filename_save , filename_size + 1 ) ; memcpy ( rar -> filename_save , rar -> filename , filename_size + 1 ) ; rar -> filename_save_size = filename_size ; free ( rar -> dbo ) ; if ( ( rar -> dbo = calloc ( 1 , sizeof ( * rar -> dbo ) ) ) == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>memory.\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> dbo [ 0 ] . header_size = header_size ; rar -> dbo [ 0 ] . start_offset = - 1 ; rar -> dbo [ 0 ] . end_offset = - 1 ; rar -> cursor = 0 ; rar -> nodes = 1 ; if ( rar -> file_flags & FHD_SALT ) { if ( p + 8 > endp ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>header<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } memcpy ( rar -> salt , p , 8 ) ; p += 8 ; } if ( rar -> file_flags & FHD_EXTTIME ) { if ( read_exttime ( p , rar , endp ) < 0 ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Invalid<S2SV_blank>header<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } } __archive_read_consume ( a , header_size - 7 ) ; rar -> dbo [ 0 ] . start_offset = a -> filter -> position ; rar -> dbo [ 0 ] . end_offset = rar -> dbo [ 0 ] . start_offset + rar -> packed_size ; switch ( file_header . host_os ) { case OS_MSDOS : case OS_OS2 : case OS_WIN32 : rar -> mode = archive_le32dec ( file_header . file_attr ) ; if ( rar -> mode & FILE_ATTRIBUTE_DIRECTORY ) rar -> mode = AE_IFDIR | S_IXUSR | S_IXGRP | S_IXOTH ; else rar -> mode = AE_IFREG ; rar -> mode |= S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ; break ; case OS_UNIX : case OS_MAC_OS : case OS_BEOS : rar -> mode = archive_le32dec ( file_header . file_attr ) ; break ; default : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unknown<S2SV_blank>file<S2SV_blank>attributes<S2SV_blank>from<S2SV_blank>RAR<S2SV_blank>file\\'s<S2SV_blank>host<S2SV_blank>OS\" ) ; return ( ARCHIVE_FATAL ) ; } rar -> bytes_uncopied = rar -> bytes_unconsumed = 0 ; rar -> lzss . position = rar -> offset = 0 ; rar -> offset_seek = 0 ; rar -> dictionary_size = 0 ; rar -> offset_outgoing = 0 ; rar -> br . cache_avail = 0 ; rar -> br . avail_in = 0 ; rar -> crc_calculated = 0 ; rar -> entry_eof = 0 ; rar -> valid = 1 ; rar -> is_ppmd_block = 0 ; rar -> start_new_table = 1 ; free ( rar -> unp_buffer ) ; rar -> unp_buffer = NULL ; rar -> unp_offset = 0 ; rar -> unp_buffer_size = UNP_BUFFER_SIZE ; memset ( rar -> lengthtable , 0 , sizeof ( rar -> lengthtable ) ) ; __archive_ppmd7_functions . Ppmd7_Free ( & rar -> ppmd7_context , & g_szalloc ) ; rar -> ppmd_valid = rar -> ppmd_eod = 0 ; if ( head_type == NEWSUB_HEAD ) return ret ; archive_entry_set_mtime ( entry , rar -> mtime , rar -> mnsec ) ; archive_entry_set_ctime ( entry , rar -> ctime , rar -> cnsec ) ; archive_entry_set_atime ( entry , rar -> atime , rar -> ansec ) ; archive_entry_set_size ( entry , rar -> unp_size ) ; archive_entry_set_mode ( entry , rar -> mode ) ; if ( archive_entry_copy_pathname_l ( entry , filename , filename_size , fn_sconv ) ) { if ( errno == ENOMEM ) { archive_set_error ( & a -> archive , ENOMEM , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Pathname\" ) ; return ( ARCHIVE_FATAL ) ; } archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Pathname<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>converted<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>current<S2SV_blank>locale.\" , archive_string_conversion_charset_name ( fn_sconv ) ) ; ret = ( ARCHIVE_WARN ) ; } if ( ( ( rar -> mode ) & AE_IFMT ) == AE_IFLNK ) { rar -> bytes_remaining = 0 ; archive_entry_set_size ( entry , 0 ) ; if ( ( ret2 = read_symlink_stored ( a , entry , sconv ) ) < ( ARCHIVE_WARN ) ) return ret2 ; if ( ret > ret2 ) ret = ret2 ; } if ( rar -> bytes_remaining == 0 ) rar -> entry_eof = 1 ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filename [ filename_size <S2SV_ModEnd> ] = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6319\n\n```\nCWE-119 static void dex_parse_debug_item ( RBinFile * binfile , RBinDexObj * bin , RBinDexClass * c , int MI , int MA , int paddr , int ins_size , int insns_size , char * class_name , int regsz , int debug_info_off ) { struct r_bin_t * rbin = binfile -> rbin ; const ut8 * p4 = r_buf_get_at ( binfile -> buf , debug_info_off , NULL ) ; const ut8 * p4_end = p4 + binfile -> buf -> length - debug_info_off ; ut64 line_start ; ut64 parameters_size ; ut64 param_type_idx ; ut16 argReg = regsz - ins_size ; ut64 source_file_idx = c -> source_file ; RList * params , * debug_positions , * emitted_debug_locals = NULL ; bool keep = true ; <S2SV_StartBug> if ( argReg >= regsz ) { <S2SV_EndBug> } p4 = r_uleb128 ( p4 , p4_end - p4 , & line_start ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & parameters_size ) ; ut32 address = 0 ; ut32 line = line_start ; if ( ! ( debug_positions = r_list_newf ( ( RListFree ) free ) ) ) { return ; } if ( ! ( emitted_debug_locals = r_list_newf ( ( RListFree ) free ) ) ) { r_list_free ( debug_positions ) ; return ; } struct dex_debug_local_t debug_locals [ regsz ] ; memset ( debug_locals , 0 , sizeof ( struct dex_debug_local_t ) * regsz ) ; if ( ! ( MA & 0x0008 ) ) { debug_locals [ argReg ] . name = \"this\" ; debug_locals [ argReg ] . descriptor = r_str_newf ( \"%s;\" , class_name ) ; debug_locals [ argReg ] . startAddress = 0 ; debug_locals [ argReg ] . signature = NULL ; debug_locals [ argReg ] . live = true ; argReg ++ ; } if ( ! ( params = dex_method_signature2 ( bin , MI ) ) ) { r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; return ; } RListIter * iter = r_list_iterator ( params ) ; char * name ; char * type ; int reg ; r_list_foreach ( params , iter , type ) { if ( ( argReg >= regsz ) || ! type || parameters_size <= 0 ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; r_list_free ( emitted_debug_locals ) ; return ; } p4 = r_uleb128 ( p4 , p4_end - p4 , & param_type_idx ) ; param_type_idx -= 1 ; name = getstr ( bin , param_type_idx ) ; reg = argReg ; switch ( type [ 0 ] ) { case 'D' : case 'J' : argReg += 2 ; break ; default : argReg += 1 ; break ; } if ( name ) { debug_locals [ reg ] . name = name ; debug_locals [ reg ] . descriptor = type ; debug_locals [ reg ] . signature = NULL ; debug_locals [ reg ] . startAddress = address ; debug_locals [ reg ] . live = true ; } -- parameters_size ; } ut8 opcode = * ( p4 ++ ) & 0xff ; while ( keep ) { switch ( opcode ) { case 0x0 : keep = false ; break ; case 0x1 : { ut64 addr_diff ; p4 = r_uleb128 ( p4 , p4_end - p4 , & addr_diff ) ; address += addr_diff ; } break ; case 0x2 : { st64 line_diff = r_sleb128 ( & p4 , p4_end ) ; line += line_diff ; } break ; case 0x3 : { ut64 register_num ; ut64 name_idx ; ut64 type_idx ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & name_idx ) ; name_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & type_idx ) ; type_idx -= 1 ; if ( register_num >= regsz ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; return ; } if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . name = getstr ( bin , name_idx ) ; debug_locals [ register_num ] . descriptor = dex_type_descriptor ( bin , type_idx ) ; debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . signature = NULL ; debug_locals [ register_num ] . live = true ; } break ; case 0x4 : { ut64 register_num ; ut64 name_idx ; ut64 type_idx ; ut64 sig_idx ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & name_idx ) ; name_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & type_idx ) ; type_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & sig_idx ) ; sig_idx -= 1 ; if ( register_num >= regsz ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; return ; } if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . name = getstr ( bin , name_idx ) ; debug_locals [ register_num ] . descriptor = dex_type_descriptor ( bin , type_idx ) ; debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . signature = getstr ( bin , sig_idx ) ; debug_locals [ register_num ] . live = true ; } break ; case 0x5 : { ut64 register_num ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . live = false ; } break ; case 0x6 : { ut64 register_num ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; if ( ! debug_locals [ register_num ] . live ) { debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . live = true ; } } break ; case 0x7 : break ; case 0x8 : break ; case 0x9 : { p4 = r_uleb128 ( p4 , p4_end - p4 , & source_file_idx ) ; source_file_idx -- ; } break ; default : { int adjusted_opcode = opcode - 0x0a ; address += ( adjusted_opcode / 15 ) ; line += - 4 + ( adjusted_opcode % 15 ) ; struct dex_debug_position_t * position = malloc ( sizeof ( struct dex_debug_position_t ) ) ; if ( ! position ) { keep = false ; break ; } position -> source_file_idx = source_file_idx ; position -> address = address ; position -> line = line ; r_list_append ( debug_positions , position ) ; } break ; } opcode = * ( p4 ++ ) & 0xff ; } if ( ! binfile -> sdb_addrinfo ) { binfile -> sdb_addrinfo = sdb_new0 ( ) ; } char * fileline ; char offset [ 64 ] ; char * offset_ptr ; RListIter * iter1 ; struct dex_debug_position_t * pos ; r_list_foreach ( debug_positions , iter1 , pos ) { fileline = r_str_newf ( \"%s|%\" PFMT64d , getstr ( bin , pos -> source_file_idx ) , pos -> line ) ; offset_ptr = sdb_itoa ( pos -> address + paddr , offset , 16 ) ; sdb_set ( binfile -> sdb_addrinfo , offset_ptr , fileline , 0 ) ; sdb_set ( binfile -> sdb_addrinfo , fileline , offset_ptr , 0 ) ; } if ( ! dexdump ) { r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; r_list_free ( params ) ; return ; } RListIter * iter2 ; struct dex_debug_position_t * position ; rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>positions<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:\\\\n\" ) ; r_list_foreach ( debug_positions , iter2 , position ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04llx<S2SV_blank>line=%llu\\\\n\" , position -> address , position -> line ) ; } rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>locals<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:\\\\n\" ) ; RListIter * iter3 ; struct dex_debug_local_t * local ; r_list_foreach ( emitted_debug_locals , iter3 , local ) { if ( local -> signature ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , local -> startAddress , local -> endAddress , local -> reg , local -> name , local -> descriptor , local -> signature ) ; } else { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , local -> startAddress , local -> endAddress , local -> reg , local -> name , local -> descriptor ) ; } } for ( reg = 0 ; reg < regsz ; reg ++ ) { if ( debug_locals [ reg ] . live ) { if ( debug_locals [ reg ] . signature ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>\" \"%s\\\\n\" , debug_locals [ reg ] . startAddress , insns_size , reg , debug_locals [ reg ] . name , debug_locals [ reg ] . descriptor , debug_locals [ reg ] . signature ) ; } else { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s\" \"\\\\n\" , debug_locals [ reg ] . startAddress , insns_size , reg , debug_locals [ reg ] . name , debug_locals [ reg ] . descriptor ) ; } } } r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; r_list_free ( params ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( argReg > <S2SV_ModEnd> regsz ) { <S2SV_ModStart> regsz ) { return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13307\n\n```\nCWE-119 static MagickPixelPacket * * AcquirePixelThreadSet ( const Image * images ) { const Image * next ; MagickPixelPacket * * pixels ; register ssize_t i , j ; size_t columns , <S2SV_StartBug> number_threads ; <S2SV_EndBug> <S2SV_StartBug> number_threads = ( size_t ) GetMagickResourceLimit ( ThreadResource ) ; <S2SV_EndBug> <S2SV_StartBug> pixels = ( MagickPixelPacket * * ) AcquireQuantumMemory ( number_threads , <S2SV_EndBug> sizeof ( * pixels ) ) ; if ( pixels == ( MagickPixelPacket * * ) NULL ) return ( ( MagickPixelPacket * * ) NULL ) ; <S2SV_StartBug> ( void ) memset ( pixels , 0 , number_threads * sizeof ( * pixels ) ) ; <S2SV_EndBug> columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) number_threads ; i ++ ) <S2SV_EndBug> { pixels [ i ] = ( MagickPixelPacket * ) AcquireQuantumMemory ( columns , sizeof ( * * pixels ) ) ; if ( pixels [ i ] == ( MagickPixelPacket * ) NULL ) return ( DestroyPixelThreadSet ( pixels ) ) ; for ( j = 0 ; j < ( ssize_t ) columns ; j ++ ) GetMagickPixelPacket ( images , & pixels [ i ] [ j ] ) ; } return ( pixels ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t columns , rows ; rows = MagickMax ( GetImageListLength ( images ) , <S2SV_ModEnd> ( size_t ) <S2SV_ModStart> ( ThreadResource ) ) <S2SV_ModStart> ) AcquireQuantumMemory ( rows , <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> NULL ) ; columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; for ( i = 0 <S2SV_ModEnd> ; i < <S2SV_ModStart> ( ssize_t ) rows <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int ASN1_item_verify ( const ASN1_ITEM * it , X509_ALGOR * a , ASN1_BIT_STRING * signature , void * asn , EVP_PKEY * pkey ) { EVP_MD_CTX ctx ; unsigned char * buf_in = NULL ; int ret = - 1 , inl ; int mdnid , pknid ; if ( ! pkey ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_PASSED_NULL_PARAMETER ) ; return - 1 ; } <S2SV_StartBug> EVP_MD_CTX_init ( & ctx ) ; <S2SV_EndBug> if ( ! OBJ_find_sigid_algs ( OBJ_obj2nid ( a -> algorithm ) , & mdnid , & pknid ) ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM ) ; goto err ; } if ( mdnid == NID_undef ) { if ( ! pkey -> ameth || ! pkey -> ameth -> item_verify ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM ) ; goto err ; } ret = pkey -> ameth -> item_verify ( & ctx , it , asn , a , signature , pkey ) ; if ( ret != 2 ) goto err ; ret = - 1 ; } else { const EVP_MD * type ; type = EVP_get_digestbynid ( mdnid ) ; if ( type == NULL ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM ) ; goto err ; } if ( EVP_PKEY_type ( pknid ) != pkey -> ameth -> pkey_id ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_WRONG_PUBLIC_KEY_TYPE ) ; goto err ; } if ( ! EVP_DigestVerifyInit ( & ctx , NULL , type , NULL , pkey ) ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } } inl = ASN1_item_i2d ( asn , & buf_in , it ) ; if ( buf_in == NULL ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_MALLOC_FAILURE ) ; goto err ; } ret = EVP_DigestVerifyUpdate ( & ctx , buf_in , inl ) ; OPENSSL_cleanse ( buf_in , ( unsigned int ) inl ) ; OPENSSL_free ( buf_in ) ; if ( ! ret ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; goto err ; } ret = - 1 ; if ( EVP_DigestVerifyFinal ( & ctx , signature -> data , ( size_t ) signature -> length ) <= 0 ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } ret = 1 ; err : EVP_MD_CTX_cleanup ( & ctx ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; } if ( signature -> type == V_ASN1_BIT_STRING && signature -> flags & 0x7 ) { ASN1err ( ASN1_F_ASN1_VERIFY , ASN1_R_INVALID_BIT_STRING_BITS_LEFT ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15924\n\n```\nCWE-78 static void <S2SV_StartBug> build_config ( char * prefix , struct server * server ) <S2SV_EndBug> { char * path = NULL ; int path_size = strlen ( prefix ) + strlen ( server -> port ) + 20 ; path = ss_malloc ( path_size ) ; snprintf ( path , path_size , \"%s/.shadowsocks_%s.conf\" , prefix , server -> port ) ; FILE * f = fopen ( path , \"w+\" ) ; if ( f == NULL ) { if ( verbose ) { LOGE ( \"unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>config<S2SV_blank>file\" ) ; } ss_free ( path ) ; return ; } fprintf ( f , \"{\\\\n\" ) ; fprintf ( f , \"\\\\\"server_port\\\\\":%d,\\\\n\" , atoi ( server -> port ) ) ; <S2SV_StartBug> fprintf ( f , \"\\\\\"password\\\\\":\\\\\"%s\\\\\"\" , server -> password ) ; <S2SV_EndBug> if ( server -> fast_open [ 0 ] ) fprintf ( f , \",\\\\n\\\\\"fast_open\\\\\":<S2SV_blank>%s\" , server -> fast_open ) ; if ( server -> mode ) fprintf ( f , \",\\\\n\\\\\"mode\\\\\":\\\\\"%s\\\\\"\" , server -> mode ) ; <S2SV_StartBug> if ( server -> method ) fprintf ( f , \",\\\\n\\\\\"method\\\\\":\\\\\"%s\\\\\"\" , server -> method ) ; <S2SV_EndBug> if ( server -> plugin ) fprintf ( f , \",\\\\n\\\\\"plugin\\\\\":\\\\\"%s\\\\\"\" , server -> plugin ) ; if ( server -> plugin_opts ) fprintf ( f , \",\\\\n\\\\\"plugin_opts\\\\\":\\\\\"%s\\\\\"\" , server -> plugin_opts ) ; fprintf ( f , \"\\\\n}\\\\n\" ) ; fclose ( f ) ; ss_free ( path ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prefix , struct manager_ctx * manager , struct <S2SV_ModStart> server -> password ) ; if ( server -> method ) fprintf ( f , \",\\\\n\\\\\"method\\\\\":\\\\\"%s\\\\\"\" , server -> method ) ; else if ( manager -> method ) fprintf ( f , \",\\\\n\\\\\"method\\\\\":\\\\\"%s\\\\\"\" , manager -> method <S2SV_ModStart> ( server -> <S2SV_ModEnd> plugin ) fprintf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19068\n\n```\nCWE-401 static int rtl8xxxu_submit_int_urb ( struct ieee80211_hw * hw ) { struct rtl8xxxu_priv * priv = hw -> priv ; struct urb * urb ; u32 val32 ; int ret ; urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! urb ) return - ENOMEM ; usb_fill_int_urb ( urb , priv -> udev , priv -> pipe_interrupt , priv -> int_buf , USB_INTR_CONTENT_LENGTH , rtl8xxxu_int_complete , priv , 1 ) ; usb_anchor_urb ( urb , & priv -> int_anchor ) ; ret = usb_submit_urb ( urb , GFP_KERNEL ) ; if ( ret ) { usb_unanchor_urb ( urb ) ; <S2SV_StartBug> goto error ; <S2SV_EndBug> } val32 = rtl8xxxu_read32 ( priv , REG_USB_HIMR ) ; val32 |= USB_HIMR_CPWM ; rtl8xxxu_write32 ( priv , REG_USB_HIMR , val32 ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> urb ) ; usb_free_urb ( urb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1066\n\n```\nCWE-476 static int SMB2_sess_establish_session ( struct SMB2_sess_data * sess_data ) { int rc = 0 ; struct cifs_ses * ses = sess_data -> ses ; mutex_lock ( & ses -> server -> srv_mutex ) ; <S2SV_StartBug> if ( ses -> server -> sign && ses -> server -> ops -> generate_signingkey ) { <S2SV_EndBug> <S2SV_StartBug> rc = ses -> server -> ops -> generate_signingkey ( ses ) ; <S2SV_EndBug> kfree ( ses -> auth_key . response ) ; ses -> auth_key . response = NULL ; if ( rc ) { cifs_dbg ( FYI , \"SMB3<S2SV_blank>session<S2SV_blank>key<S2SV_blank>generation<S2SV_blank>failed\\\\n\" ) ; mutex_unlock ( & ses -> server -> srv_mutex ) ; <S2SV_StartBug> goto keygen_exit ; <S2SV_EndBug> } } if ( ! ses -> server -> session_estab ) { ses -> server -> sequence_number = 0x2 ; ses -> server -> session_estab = true ; } mutex_unlock ( & ses -> server -> srv_mutex ) ; cifs_dbg ( FYI , \"SMB2/3<S2SV_blank>session<S2SV_blank>established<S2SV_blank>successfully\\\\n\" ) ; spin_lock ( & GlobalMid_Lock ) ; ses -> status = CifsGood ; ses -> need_reconnect = false ; spin_unlock ( & GlobalMid_Lock ) ; <S2SV_StartBug> keygen_exit : <S2SV_EndBug> if ( ! ses -> server -> sign ) { kfree ( ses -> auth_key . response ) ; ses -> auth_key . response = NULL ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> server -> <S2SV_ModEnd> ops -> generate_signingkey <S2SV_ModStart> ( ses ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> srv_mutex ) ; return rc <S2SV_ModEnd> ; } } <S2SV_ModStart> GlobalMid_Lock ) ; <S2SV_ModEnd> return rc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8816\n\n```\nCWE-000 static void hub_activate ( struct usb_hub * hub , enum hub_activation_type type ) { struct usb_device * hdev = hub -> hdev ; struct usb_hcd * hcd ; int ret ; int port1 ; int status ; bool need_debounce_delay = false ; unsigned delay ; <S2SV_StartBug> if ( type == HUB_INIT2 ) <S2SV_EndBug> goto init2 ; <S2SV_StartBug> if ( type == HUB_INIT3 ) <S2SV_EndBug> goto init3 ; if ( type != HUB_RESUME ) { if ( hdev -> parent && hub_is_superspeed ( hdev ) ) { ret = usb_control_msg ( hdev , usb_sndctrlpipe ( hdev , 0 ) , HUB_SET_DEPTH , USB_RT_HUB , hdev -> level - 1 , 0 , NULL , 0 , USB_CTRL_SET_TIMEOUT ) ; if ( ret < 0 ) dev_err ( hub -> intfdev , \"set<S2SV_blank>hub<S2SV_blank>depth<S2SV_blank>failed\\\\n\" ) ; } if ( type == HUB_INIT ) { delay = hub_power_on_good_delay ( hub ) ; hub_power_on ( hub , false ) ; INIT_DELAYED_WORK ( & hub -> init_work , hub_init_func2 ) ; queue_delayed_work ( system_power_efficient_wq , & hub -> init_work , msecs_to_jiffies ( delay ) ) ; usb_autopm_get_interface_no_resume ( to_usb_interface ( hub -> intfdev ) ) ; return ; } else if ( type == HUB_RESET_RESUME ) { hcd = bus_to_hcd ( hdev -> bus ) ; if ( hcd -> driver -> update_hub_device ) { ret = hcd -> driver -> update_hub_device ( hcd , hdev , & hub -> tt , GFP_NOIO ) ; if ( ret < 0 ) { dev_err ( hub -> intfdev , \"Host<S2SV_blank>not<S2SV_blank>\" \"accepting<S2SV_blank>hub<S2SV_blank>info<S2SV_blank>\" \"update.\\\\n\" ) ; dev_err ( hub -> intfdev , \"LS/FS<S2SV_blank>devices<S2SV_blank>\" \"and<S2SV_blank>hubs<S2SV_blank>may<S2SV_blank>not<S2SV_blank>work<S2SV_blank>\" \"under<S2SV_blank>this<S2SV_blank>hub\\\\n.\" ) ; } } hub_power_on ( hub , true ) ; } else { hub_power_on ( hub , true ) ; } } init2 : for ( port1 = 1 ; port1 <= hdev -> maxchild ; ++ port1 ) { struct usb_port * port_dev = hub -> ports [ port1 - 1 ] ; struct usb_device * udev = port_dev -> child ; u16 portstatus , portchange ; portstatus = portchange = 0 ; status = hub_port_status ( hub , port1 , & portstatus , & portchange ) ; if ( udev || ( portstatus & USB_PORT_STAT_CONNECTION ) ) dev_dbg ( & port_dev -> dev , \"status<S2SV_blank>%04x<S2SV_blank>change<S2SV_blank>%04x\\\\n\" , portstatus , portchange ) ; if ( ( portstatus & USB_PORT_STAT_ENABLE ) && ( type != HUB_RESUME || ! ( portstatus & USB_PORT_STAT_CONNECTION ) || ! udev || udev -> state == USB_STATE_NOTATTACHED ) ) { portstatus &= ~ USB_PORT_STAT_ENABLE ; if ( ! hub_is_superspeed ( hdev ) ) usb_clear_port_feature ( hdev , port1 , USB_PORT_FEAT_ENABLE ) ; } if ( portchange & USB_PORT_STAT_C_CONNECTION ) { need_debounce_delay = true ; usb_clear_port_feature ( hub -> hdev , port1 , USB_PORT_FEAT_C_CONNECTION ) ; } if ( portchange & USB_PORT_STAT_C_ENABLE ) { need_debounce_delay = true ; usb_clear_port_feature ( hub -> hdev , port1 , USB_PORT_FEAT_C_ENABLE ) ; } if ( portchange & USB_PORT_STAT_C_RESET ) { need_debounce_delay = true ; usb_clear_port_feature ( hub -> hdev , port1 , USB_PORT_FEAT_C_RESET ) ; } if ( ( portchange & USB_PORT_STAT_C_BH_RESET ) && hub_is_superspeed ( hub -> hdev ) ) { need_debounce_delay = true ; usb_clear_port_feature ( hub -> hdev , port1 , USB_PORT_FEAT_C_BH_PORT_RESET ) ; } if ( ! ( portstatus & USB_PORT_STAT_CONNECTION ) || ( portchange & USB_PORT_STAT_C_CONNECTION ) ) clear_bit ( port1 , hub -> removed_bits ) ; if ( ! udev || udev -> state == USB_STATE_NOTATTACHED ) { if ( udev || ( portstatus & USB_PORT_STAT_CONNECTION ) || ( portstatus & USB_PORT_STAT_OVERCURRENT ) ) set_bit ( port1 , hub -> change_bits ) ; } else if ( portstatus & USB_PORT_STAT_ENABLE ) { bool port_resumed = ( portstatus & USB_PORT_STAT_LINK_STATE ) == USB_SS_PORT_LS_U0 ; if ( portchange || ( hub_is_superspeed ( hub -> hdev ) && port_resumed ) ) set_bit ( port1 , hub -> change_bits ) ; } else if ( udev -> persist_enabled ) { # ifdef CONFIG_PM udev -> reset_resume = 1 ; # endif if ( test_bit ( port1 , hub -> power_bits ) ) set_bit ( port1 , hub -> change_bits ) ; } else { usb_set_device_state ( udev , USB_STATE_NOTATTACHED ) ; set_bit ( port1 , hub -> change_bits ) ; } } if ( need_debounce_delay ) { delay = HUB_DEBOUNCE_STABLE ; if ( type == HUB_INIT2 ) { INIT_DELAYED_WORK ( & hub -> init_work , hub_init_func3 ) ; queue_delayed_work ( system_power_efficient_wq , & hub -> init_work , msecs_to_jiffies ( delay ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } else { msleep ( delay ) ; } } init3 : hub -> quiescing = 0 ; status = usb_submit_urb ( hub -> urb , GFP_NOIO ) ; if ( status < 0 ) dev_err ( hub -> intfdev , \"activate<S2SV_blank>--><S2SV_blank>%d\\\\n\" , status ) ; if ( hub -> has_indicators && blinkenlights ) queue_delayed_work ( system_power_efficient_wq , & hub -> leds , LED_CYCLE_PERIOD ) ; kick_hub_wq ( hub ) ; if ( type <= HUB_INIT3 ) usb_autopm_put_interface_async ( to_usb_interface ( hub -> intfdev ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> type == HUB_INIT2 || type == HUB_INIT3 ) { device_lock ( hub -> intfdev ) ; if ( hub -> disconnected ) { device_unlock ( hub -> intfdev ) ; kref_put ( & hub -> kref , hub_release ) ; return ; } if ( type == HUB_INIT2 <S2SV_ModStart> goto init2 ; goto init3 ; } kref_get ( & hub -> kref ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) ; device_unlock ( hub -> intfdev ) ; <S2SV_ModStart> ) ) ; if ( type == HUB_INIT2 || type == HUB_INIT3 ) device_unlock ( hub -> intfdev ) ; kref_put ( & hub -> kref , hub_release ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2121\n\n```\nCWE-264 int __kvm_set_memory_region ( struct kvm * kvm , struct kvm_userspace_memory_region * mem , int user_alloc ) { int r ; gfn_t base_gfn ; unsigned long npages ; unsigned long i ; struct kvm_memory_slot * memslot ; struct kvm_memory_slot old , new ; struct kvm_memslots * slots , * old_memslots ; r = - EINVAL ; if ( mem -> memory_size & ( PAGE_SIZE - 1 ) ) goto out ; if ( mem -> guest_phys_addr & ( PAGE_SIZE - 1 ) ) goto out ; if ( user_alloc && ( ( mem -> userspace_addr & ( PAGE_SIZE - 1 ) ) || ! access_ok ( VERIFY_WRITE , ( void __user * ) ( unsigned long ) mem -> userspace_addr , mem -> memory_size ) ) ) goto out ; if ( mem -> slot >= KVM_MEM_SLOTS_NUM ) goto out ; if ( mem -> guest_phys_addr + mem -> memory_size < mem -> guest_phys_addr ) goto out ; memslot = id_to_memslot ( kvm -> memslots , mem -> slot ) ; base_gfn = mem -> guest_phys_addr >> PAGE_SHIFT ; npages = mem -> memory_size >> PAGE_SHIFT ; r = - EINVAL ; if ( npages > KVM_MEM_MAX_NR_PAGES ) goto out ; if ( ! npages ) mem -> flags &= ~ KVM_MEM_LOG_DIRTY_PAGES ; new = old = * memslot ; new . id = mem -> slot ; new . base_gfn = base_gfn ; new . npages = npages ; new . flags = mem -> flags ; r = - EINVAL ; if ( npages && old . npages && npages != old . npages ) goto out_free ; r = - EEXIST ; for ( i = 0 ; i < KVM_MEMORY_SLOTS ; ++ i ) { struct kvm_memory_slot * s = & kvm -> memslots -> memslots [ i ] ; if ( s == memslot || ! s -> npages ) continue ; if ( ! ( ( base_gfn + npages <= s -> base_gfn ) || ( base_gfn >= s -> base_gfn + s -> npages ) ) ) goto out_free ; } if ( ! ( new . flags & KVM_MEM_LOG_DIRTY_PAGES ) ) new . dirty_bitmap = NULL ; r = - ENOMEM ; # ifndef CONFIG_S390 if ( npages && ! new . rmap ) { new . rmap = vzalloc ( npages * sizeof ( * new . rmap ) ) ; if ( ! new . rmap ) goto out_free ; new . user_alloc = user_alloc ; new . userspace_addr = mem -> userspace_addr ; } if ( ! npages ) goto skip_lpage ; for ( i = 0 ; i < KVM_NR_PAGE_SIZES - 1 ; ++ i ) { unsigned long ugfn ; unsigned long j ; int lpages ; int level = i + 2 ; ( void ) level ; if ( new . lpage_info [ i ] ) continue ; lpages = 1 + ( ( base_gfn + npages - 1 ) >> KVM_HPAGE_GFN_SHIFT ( level ) ) ; lpages -= base_gfn >> KVM_HPAGE_GFN_SHIFT ( level ) ; new . lpage_info [ i ] = vzalloc ( lpages * sizeof ( * new . lpage_info [ i ] ) ) ; if ( ! new . lpage_info [ i ] ) goto out_free ; if ( base_gfn & ( KVM_PAGES_PER_HPAGE ( level ) - 1 ) ) new . lpage_info [ i ] [ 0 ] . write_count = 1 ; if ( ( base_gfn + npages ) & ( KVM_PAGES_PER_HPAGE ( level ) - 1 ) ) new . lpage_info [ i ] [ lpages - 1 ] . write_count = 1 ; ugfn = new . userspace_addr >> PAGE_SHIFT ; if ( ( base_gfn ^ ugfn ) & ( KVM_PAGES_PER_HPAGE ( level ) - 1 ) || ! largepages_enabled ) for ( j = 0 ; j < lpages ; ++ j ) new . lpage_info [ i ] [ j ] . write_count = 1 ; } skip_lpage : if ( ( new . flags & KVM_MEM_LOG_DIRTY_PAGES ) && ! new . dirty_bitmap ) { if ( kvm_create_dirty_bitmap ( & new ) < 0 ) goto out_free ; } # else new . user_alloc = user_alloc ; if ( user_alloc ) new . userspace_addr = mem -> userspace_addr ; # endif if ( ! npages ) { struct kvm_memory_slot * slot ; r = - ENOMEM ; slots = kmemdup ( kvm -> memslots , sizeof ( struct kvm_memslots ) , GFP_KERNEL ) ; if ( ! slots ) goto out_free ; slot = id_to_memslot ( slots , mem -> slot ) ; slot -> flags |= KVM_MEMSLOT_INVALID ; update_memslots ( slots , NULL ) ; old_memslots = kvm -> memslots ; rcu_assign_pointer ( kvm -> memslots , slots ) ; synchronize_srcu_expedited ( & kvm -> srcu ) ; kvm_arch_flush_shadow ( kvm ) ; kfree ( old_memslots ) ; } r = kvm_arch_prepare_memory_region ( kvm , & new , old , mem , user_alloc ) ; if ( r ) goto out_free ; if ( npages ) { r = kvm_iommu_map_pages ( kvm , & new ) ; if ( r ) goto out_free ; <S2SV_StartBug> } <S2SV_EndBug> r = - ENOMEM ; slots = kmemdup ( kvm -> memslots , sizeof ( struct kvm_memslots ) , GFP_KERNEL ) ; if ( ! slots ) goto out_free ; if ( ! npages ) { new . rmap = NULL ; new . dirty_bitmap = NULL ; for ( i = 0 ; i < KVM_NR_PAGE_SIZES - 1 ; ++ i ) new . lpage_info [ i ] = NULL ; } update_memslots ( slots , & new ) ; old_memslots = kvm -> memslots ; rcu_assign_pointer ( kvm -> memslots , slots ) ; synchronize_srcu_expedited ( & kvm -> srcu ) ; kvm_arch_commit_memory_region ( kvm , mem , old , user_alloc ) ; if ( npages && old . base_gfn != mem -> guest_phys_addr >> PAGE_SHIFT ) kvm_arch_flush_shadow ( kvm ) ; kvm_free_physmem_slot ( & old , & new ) ; kfree ( old_memslots ) ; return 0 ; out_free : kvm_free_physmem_slot ( & new , & old ) ; out : return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_free ; } else kvm_iommu_unmap_pages ( kvm , & old ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5548\n\n```\nCWE-119 static int atusb_get_and_show_revision ( struct atusb * atusb ) { struct usb_device * usb_dev = atusb -> usb_dev ; <S2SV_StartBug> unsigned char buffer [ 3 ] ; <S2SV_EndBug> int ret ; ret = atusb_control_msg ( atusb , usb_rcvctrlpipe ( usb_dev , 0 ) , ATUSB_ID , ATUSB_REQ_FROM_DEV , 0 , 0 , buffer , 3 , 1000 ) ; if ( ret >= 0 ) { atusb -> fw_ver_maj = buffer [ 0 ] ; atusb -> fw_ver_min = buffer [ 1 ] ; atusb -> fw_hw_type = buffer [ 2 ] ; dev_info ( & usb_dev -> dev , \"Firmware:<S2SV_blank>major:<S2SV_blank>%u,<S2SV_blank>minor:<S2SV_blank>%u,<S2SV_blank>hardware<S2SV_blank>type:<S2SV_blank>%u\\\\n\" , atusb -> fw_ver_maj , atusb -> fw_ver_min , atusb -> fw_hw_type ) ; } if ( atusb -> fw_ver_maj == 0 && atusb -> fw_ver_min < 2 ) { dev_info ( & usb_dev -> dev , \"Firmware<S2SV_blank>version<S2SV_blank>(%u.%u)<S2SV_blank>predates<S2SV_blank>our<S2SV_blank>first<S2SV_blank>public<S2SV_blank>release.\" , atusb -> fw_ver_maj , atusb -> fw_ver_min ) ; dev_info ( & usb_dev -> dev , \"Please<S2SV_blank>update<S2SV_blank>to<S2SV_blank>version<S2SV_blank>0.2<S2SV_blank>or<S2SV_blank>newer\" ) ; } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned char * buffer ; int ret ; buffer = kmalloc ( 3 , GFP_KERNEL ) ; if ( ! buffer ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> ) ; } kfree ( buffer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12843\n\n```\nCWE-20 EXPORTED const char * dlist_reserve_path ( const char * part , int isarchive , const struct message_guid * guid ) { static char buf [ MAX_MAILBOX_PATH ] ; <S2SV_StartBug> const char * base ; <S2SV_EndBug> if ( strchr ( part , '/' ) ) { base = part ; } else { base = isarchive ? config_archivepartitiondir ( part ) : config_partitiondir ( part ) ; <S2SV_StartBug> } <S2SV_EndBug> assert ( base != NULL ) ; snprintf ( buf , MAX_MAILBOX_PATH , \"%s/sync./%lu/%s\" , base , ( unsigned long ) getpid ( ) , message_guid_encode ( guid ) ) ; if ( cyrus_mkdir ( buf , 0755 ) ) { syslog ( LOG_ERR , \"IOERROR:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>%s/sync./%lu/<S2SV_blank>for<S2SV_blank>reserve:<S2SV_blank>%m\" , base , ( unsigned long ) getpid ( ) ) ; } return buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * base <S2SV_ModEnd> = isarchive ? <S2SV_ModStart> part ) ; <S2SV_ModEnd> assert ( base\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9114\n\n```\nCWE-77 static int save_dev ( blkid_dev dev , FILE * file ) { struct list_head * p ; if ( ! dev || dev -> bid_name [ 0 ] != '/' ) return 0 ; DBG ( SAVE , ul_debug ( \"device<S2SV_blank>%s,<S2SV_blank>type<S2SV_blank>%s\" , dev -> bid_name , dev -> bid_type ? dev -> bid_type : \"(null)\" ) ) ; fprintf ( file , \"<device<S2SV_blank>DEVNO=\\\\\"0x%04lx\\\\\"<S2SV_blank>TIME=\\\\\"%ld.%ld\\\\\"\" , ( unsigned long ) dev -> bid_devno , ( long ) dev -> bid_time , ( long ) dev -> bid_utime ) ; if ( dev -> bid_pri ) fprintf ( file , \"<S2SV_blank>PRI=\\\\\"%d\\\\\"\" , dev -> bid_pri ) ; list_for_each ( p , & dev -> bid_tags ) { blkid_tag tag = list_entry ( p , struct blkid_struct_tag , bit_tags ) ; <S2SV_StartBug> fprintf ( file , \"<S2SV_blank>%s=\\\\\"%s\\\\\"\" , tag -> bit_name , tag -> bit_val ) ; <S2SV_EndBug> } fprintf ( file , \">%s</device>\\\\n\" , dev -> bid_name ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bit_tags ) ; fputc ( '<S2SV_blank>' , file ) ; fputs ( <S2SV_ModEnd> tag -> bit_name <S2SV_ModStart> -> bit_name , file ) ; fputc ( '=' , file ) ; save_quoted ( <S2SV_ModStart> tag -> bit_val , file\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11413\n\n```\nCWE-674 static void Sp_match ( js_State * J ) { js_Regexp * re ; const char * text ; int len ; const char * a , * b , * c , * e ; Resub m ; text = checkstring ( J , 0 ) ; if ( js_isregexp ( J , 1 ) ) js_copy ( J , 1 ) ; else if ( js_isundefined ( J , 1 ) ) js_newregexp ( J , \"\" , 0 ) ; else js_newregexp ( J , js_tostring ( J , 1 ) , 0 ) ; re = js_toregexp ( J , - 1 ) ; if ( ! ( re -> flags & JS_REGEXP_G ) ) { js_RegExp_prototype_exec ( J , re , text ) ; return ; } re -> last = 0 ; js_newarray ( J ) ; len = 0 ; a = text ; e = text + strlen ( text ) ; while ( a <= e ) { <S2SV_StartBug> if ( js_regexec ( re -> prog , a , & m , a > text ? REG_NOTBOL : 0 ) ) <S2SV_EndBug> break ; b = m . sub [ 0 ] . sp ; c = m . sub [ 0 ] . ep ; js_pushlstring ( J , b , c - b ) ; js_setindex ( J , - 2 , len ++ ) ; a = c ; if ( c - b == 0 ) ++ a ; } if ( len == 0 ) { js_pop ( J , 1 ) ; js_pushnull ( J ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( js_doregexec ( J , <S2SV_ModEnd> re -> prog\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int load_state_from_tss16 ( struct x86_emulate_ctxt * ctxt , struct tss_segment_16 * tss ) { int ret ; u8 cpl ; ctxt -> _eip = tss -> ip ; ctxt -> eflags = tss -> flag | 2 ; * reg_write ( ctxt , VCPU_REGS_RAX ) = tss -> ax ; * reg_write ( ctxt , VCPU_REGS_RCX ) = tss -> cx ; * reg_write ( ctxt , VCPU_REGS_RDX ) = tss -> dx ; * reg_write ( ctxt , VCPU_REGS_RBX ) = tss -> bx ; * reg_write ( ctxt , VCPU_REGS_RSP ) = tss -> sp ; * reg_write ( ctxt , VCPU_REGS_RBP ) = tss -> bp ; * reg_write ( ctxt , VCPU_REGS_RSI ) = tss -> si ; * reg_write ( ctxt , VCPU_REGS_RDI ) = tss -> di ; set_segment_selector ( ctxt , tss -> ldt , VCPU_SREG_LDTR ) ; set_segment_selector ( ctxt , tss -> es , VCPU_SREG_ES ) ; set_segment_selector ( ctxt , tss -> cs , VCPU_SREG_CS ) ; set_segment_selector ( ctxt , tss -> ss , VCPU_SREG_SS ) ; set_segment_selector ( ctxt , tss -> ds , VCPU_SREG_DS ) ; cpl = tss -> cs & 3 ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ldt , VCPU_SREG_LDTR , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> es , VCPU_SREG_ES , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> cs , VCPU_SREG_CS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ss , VCPU_SREG_SS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ds , VCPU_SREG_DS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_compute_qdelta_by_rate ( const RATE_CONTROL * rc , FRAME_TYPE frame_type , <S2SV_StartBug> int qindex , double rate_target_ratio ) { <S2SV_EndBug> int target_index = rc -> worst_quality ; int i ; <S2SV_StartBug> const int base_bits_per_mb = vp9_rc_bits_per_mb ( frame_type , qindex , 1.0 ) ; <S2SV_EndBug> const int target_bits_per_mb = ( int ) ( rate_target_ratio * base_bits_per_mb ) ; for ( i = rc -> best_quality ; i < rc -> worst_quality ; ++ i ) { <S2SV_StartBug> target_index = i ; <S2SV_EndBug> <S2SV_StartBug> if ( vp9_rc_bits_per_mb ( frame_type , i , 1.0 ) <= target_bits_per_mb ) <S2SV_EndBug> break ; } return target_index - qindex ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , double rate_target_ratio , vpx_bit_depth_t bit_depth <S2SV_ModStart> qindex , 1.0 , bit_depth <S2SV_ModStart> i ) { <S2SV_ModEnd> if ( vp9_rc_bits_per_mb <S2SV_ModStart> i , 1.0 , bit_depth <S2SV_ModStart> <= target_bits_per_mb ) { target_index = i ; break ; } <S2SV_ModEnd> } return target_index\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-000 static int crypto_report_acomp ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_acomp racomp ; <S2SV_StartBug> strlcpy ( racomp . type , \"acomp\" , sizeof ( racomp . type ) ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_ACOMP , sizeof ( struct crypto_report_acomp ) , & racomp ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_acomp racomp ; strncpy <S2SV_ModEnd> ( racomp .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t webSocketParseRequestLine ( WebSocket * webSocket , char_t * line ) { error_t error ; char_t * token ; char_t * p ; char_t * s ; TRACE_DEBUG ( \"%s\" , line ) ; token = osStrtok_r ( line , \"<S2SV_blank>\\\\r\\\\n\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_REQUEST ; if ( osStrcasecmp ( token , \"GET\" ) ) return ERROR_INVALID_REQUEST ; token = osStrtok_r ( NULL , \"<S2SV_blank>\\\\r\\\\n\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_REQUEST ; <S2SV_StartBug> s = strchr ( token , '?' ) ; <S2SV_EndBug> if ( s != NULL ) { * s = '\\\\0' ; error = webSocketDecodePercentEncodedString ( token , webSocket -> uri , WEB_SOCKET_URI_MAX_LEN ) ; if ( error ) return ERROR_INVALID_REQUEST ; if ( osStrlen ( s + 1 ) > WEB_SOCKET_QUERY_STRING_MAX_LEN ) return ERROR_INVALID_REQUEST ; osStrcpy ( webSocket -> queryString , s + 1 ) ; } else { error = webSocketDecodePercentEncodedString ( token , webSocket -> uri , WEB_SOCKET_URI_MAX_LEN ) ; if ( error ) return ERROR_INVALID_REQUEST ; webSocket -> queryString [ 0 ] = '\\\\0' ; } token = osStrtok_r ( NULL , \"<S2SV_blank>\\\\r\\\\n\" , & p ) ; if ( token == NULL ) { webSocket -> handshakeContext . version = WS_HTTP_VERSION_0_9 ; webSocket -> handshakeContext . connectionClose = TRUE ; } else if ( ! osStrcasecmp ( token , \"HTTP/1.0\" ) ) { webSocket -> handshakeContext . version = WS_HTTP_VERSION_1_0 ; webSocket -> handshakeContext . connectionClose = TRUE ; } else if ( ! osStrcasecmp ( token , \"HTTP/1.1\" ) ) { webSocket -> handshakeContext . version = WS_HTTP_VERSION_1_1 ; webSocket -> handshakeContext . connectionClose = FALSE ; } else { return ERROR_INVALID_REQUEST ; } return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; s = osStrchr <S2SV_ModEnd> ( token ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-13112\n\n```\nCWE-125 static void exif_mnote_data_pentax_load ( ExifMnoteData * en , const unsigned char * buf , unsigned int buf_size ) { ExifMnoteDataPentax * n = ( ExifMnoteDataPentax * ) en ; size_t i , tcount , o , datao , base = 0 ; ExifShort c ; if ( ! n || ! buf || ! buf_size ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataPentax\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } datao = 6 + n -> offset ; <S2SV_StartBug> if ( ( datao + 8 < datao ) || ( datao + 8 < 8 ) || ( datao + 8 > buf_size ) ) { <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataPentax\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } if ( ! memcmp ( buf + datao , \"AOC\" , 4 ) ) { if ( ( buf [ datao + 4 ] == 'I' ) && ( buf [ datao + 5 ] == 'I' ) ) { n -> version = pentaxV3 ; n -> order = EXIF_BYTE_ORDER_INTEL ; } else if ( ( buf [ datao + 4 ] == 'M' ) && ( buf [ datao + 5 ] == 'M' ) ) { n -> version = pentaxV3 ; n -> order = EXIF_BYTE_ORDER_MOTOROLA ; } else { n -> version = pentaxV2 ; } exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Parsing<S2SV_blank>Pentax<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v%d...\" , ( int ) n -> version ) ; datao += 4 + 2 ; base = MNOTE_PENTAX2_TAG_BASE ; } else if ( ! memcmp ( buf + datao , \"QVC\" , 4 ) ) { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Parsing<S2SV_blank>Casio<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v2...\" ) ; n -> version = casioV2 ; base = MNOTE_CASIO2_TAG_BASE ; datao += 4 + 2 ; } else { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Parsing<S2SV_blank>Pentax<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v1...\" ) ; n -> version = pentaxV1 ; } c = exif_get_short ( buf + datao , n -> order ) ; datao += 2 ; exif_mnote_data_pentax_clear ( n ) ; n -> entries = exif_mem_alloc ( en -> mem , sizeof ( MnotePentaxEntry ) * c ) ; if ( ! n -> entries ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteDataPentax\" , sizeof ( MnotePentaxEntry ) * c ) ; return ; } tcount = 0 ; for ( i = c , o = datao ; i ; -- i , o += 12 ) { size_t s ; <S2SV_StartBug> if ( ( o + 12 < o ) || ( o + 12 < 12 ) || ( o + 12 > buf_size ) ) { <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , <S2SV_StartBug> \"ExifMnoteDataPentax\" , \"Short<S2SV_blank>MakerNote\" ) ; <S2SV_EndBug> break ; } <S2SV_StartBug> n -> entries [ tcount ] . tag = exif_get_short ( buf + o + 0 , n -> order ) + base ; <S2SV_EndBug> n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; n -> entries [ tcount ] . order = n -> order ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnotePentax\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_pentax_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; s = exif_format_get_size ( n -> entries [ tcount ] . format ) * n -> entries [ tcount ] . components ; n -> entries [ tcount ] . size = s ; if ( s ) { size_t dataofs = o + 8 ; if ( s > 4 ) dataofs = exif_get_long ( buf + dataofs , n -> order ) + 6 ; <S2SV_StartBug> if ( ( dataofs + s < dataofs ) || ( dataofs + s < s ) || <S2SV_EndBug> ( dataofs + s > buf_size ) ) { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>\" \"of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) ( dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( en -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteDataPentax\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs , s ) ; } ++ tcount ; } n -> count = tcount ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( CHECKOVERFLOW ( datao , buf_size , 8 <S2SV_ModEnd> ) ) { <S2SV_ModStart> ; if ( CHECKOVERFLOW ( o , buf_size , 12 ) ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataPentax\" , \"Short<S2SV_blank>MakerNote\" ) ; break ; } n -> entries [ tcount ] . tag = exif_get_short ( buf + o + 0 , n -> order ) + base ; n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; n -> entries [ tcount ] . order = n -> order ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnotePentax\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_pentax_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; if ( exif_format_get_size ( n -> entries [ tcount ] . format ) && buf_size / exif_format_get_size ( n -> entries [ tcount ] . format ) < n -> entries [ tcount ] . components <S2SV_ModEnd> ) { exif_log <S2SV_ModStart> , \"ExifMnoteDataPentax\" , \"Tag<S2SV_blank>size<S2SV_blank>overflow<S2SV_blank>detected<S2SV_blank>(%u<S2SV_blank>*<S2SV_blank>%lu)\" , exif_format_get_size ( n -> entries [ tcount ] . format ) , n -> entries [ tcount ] . components <S2SV_ModEnd> ) ; break <S2SV_ModStart> break ; } <S2SV_ModEnd> s = exif_format_get_size <S2SV_ModStart> ; if ( CHECKOVERFLOW ( dataofs , buf_size , s ) ) { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>\" \"of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) ( dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( en -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteDataPentax\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs , s <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 static int snd_ctl_elem_user_get ( struct snd_kcontrol * kcontrol , struct snd_ctl_elem_value * ucontrol ) { struct user_element * ue = kcontrol -> private_data ; <S2SV_StartBug> memcpy ( & ucontrol -> value , ue -> elem_data , ue -> elem_data_size ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private_data ; mutex_lock ( & ue -> card -> user_ctl_lock ) ; <S2SV_ModStart> elem_data_size ) ; mutex_unlock ( & ue -> card -> user_ctl_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2634\n\n```\nCWE-399 static int dcbnl_cee_fill ( struct sk_buff * skb , struct net_device * netdev ) { struct nlattr * cee , * app ; struct dcb_app_type * itr ; const struct dcbnl_rtnl_ops * ops = netdev -> dcbnl_ops ; int dcbx , i , err = - EMSGSIZE ; u8 value ; if ( nla_put_string ( skb , DCB_ATTR_IFNAME , netdev -> name ) ) goto nla_put_failure ; cee = nla_nest_start ( skb , DCB_ATTR_CEE ) ; if ( ! cee ) goto nla_put_failure ; if ( ops -> getpgtccfgtx && ops -> getpgbwgcfgtx ) { err = dcbnl_cee_pg_fill ( skb , netdev , 1 ) ; if ( err ) goto nla_put_failure ; } if ( ops -> getpgtccfgrx && ops -> getpgbwgcfgrx ) { err = dcbnl_cee_pg_fill ( skb , netdev , 0 ) ; if ( err ) goto nla_put_failure ; } if ( ops -> getpfccfg ) { struct nlattr * pfc_nest = nla_nest_start ( skb , DCB_ATTR_CEE_PFC ) ; if ( ! pfc_nest ) goto nla_put_failure ; for ( i = DCB_PFC_UP_ATTR_0 ; i <= DCB_PFC_UP_ATTR_7 ; i ++ ) { ops -> getpfccfg ( netdev , i - DCB_PFC_UP_ATTR_0 , & value ) ; if ( nla_put_u8 ( skb , i , value ) ) goto nla_put_failure ; } nla_nest_end ( skb , pfc_nest ) ; } spin_lock ( & dcb_lock ) ; app = nla_nest_start ( skb , DCB_ATTR_CEE_APP_TABLE ) ; if ( ! app ) goto dcb_unlock ; list_for_each_entry ( itr , & dcb_app_list , list ) { if ( itr -> ifindex == netdev -> ifindex ) { struct nlattr * app_nest = nla_nest_start ( skb , DCB_ATTR_APP ) ; if ( ! app_nest ) goto dcb_unlock ; err = nla_put_u8 ( skb , DCB_APP_ATTR_IDTYPE , itr -> app . selector ) ; if ( err ) goto dcb_unlock ; err = nla_put_u16 ( skb , DCB_APP_ATTR_ID , itr -> app . protocol ) ; if ( err ) goto dcb_unlock ; err = nla_put_u8 ( skb , DCB_APP_ATTR_PRIORITY , itr -> app . priority ) ; if ( err ) goto dcb_unlock ; nla_nest_end ( skb , app_nest ) ; } } nla_nest_end ( skb , app ) ; if ( netdev -> dcbnl_ops -> getdcbx ) dcbx = netdev -> dcbnl_ops -> getdcbx ( netdev ) ; else dcbx = - EOPNOTSUPP ; spin_unlock ( & dcb_lock ) ; if ( ops -> getfeatcfg ) { struct nlattr * feat = nla_nest_start ( skb , DCB_ATTR_CEE_FEAT ) ; if ( ! feat ) goto nla_put_failure ; for ( i = DCB_FEATCFG_ATTR_ALL + 1 ; i <= DCB_FEATCFG_ATTR_MAX ; i ++ ) if ( ! ops -> getfeatcfg ( netdev , i , & value ) && nla_put_u8 ( skb , i , value ) ) goto nla_put_failure ; nla_nest_end ( skb , feat ) ; } if ( ops -> cee_peer_getpg ) { struct cee_pg pg ; <S2SV_StartBug> err = ops -> cee_peer_getpg ( netdev , & pg ) ; <S2SV_EndBug> if ( ! err && nla_put ( skb , DCB_ATTR_CEE_PEER_PG , sizeof ( pg ) , & pg ) ) goto nla_put_failure ; } if ( ops -> cee_peer_getpfc ) { <S2SV_StartBug> struct cee_pfc pfc ; <S2SV_EndBug> err = ops -> cee_peer_getpfc ( netdev , & pfc ) ; if ( ! err && nla_put ( skb , DCB_ATTR_CEE_PEER_PFC , sizeof ( pfc ) , & pfc ) ) goto nla_put_failure ; } if ( ops -> peer_getappinfo && ops -> peer_getapptable ) { err = dcbnl_build_peer_app ( netdev , skb , DCB_ATTR_CEE_PEER_APP_TABLE , DCB_ATTR_CEE_PEER_APP_INFO , DCB_ATTR_CEE_PEER_APP ) ; if ( err ) goto nla_put_failure ; } nla_nest_end ( skb , cee ) ; if ( dcbx >= 0 ) { err = nla_put_u8 ( skb , DCB_ATTR_DCBX , dcbx ) ; if ( err ) goto nla_put_failure ; } return 0 ; dcb_unlock : spin_unlock ( & dcb_lock ) ; nla_put_failure : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cee_pg pg ; memset ( & pg , 0 , sizeof ( pg ) ) ; <S2SV_ModStart> struct cee_pfc pfc ; memset ( & pfc , 0 , sizeof ( pfc ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 static bool parse_cmdline ( int argc , char * * argv ) { int c ; bool reopen_log = false ; int signum ; struct utsname uname_buf ; int longindex ; int curind ; bool bad_option = false ; <S2SV_StartBug> unsigned facility ; <S2SV_EndBug> struct option long_options [ ] = { { \"use-file\" , required_argument , NULL , 'f' } , # if defined _WITH_VRRP_ && defined _WITH_LVS_ { \"vrrp\" , no_argument , NULL , 'P' } , { \"check\" , no_argument , NULL , 'C' } , # endif # ifdef _WITH_BFD_ { \"no_bfd\" , no_argument , NULL , 'B' } , # endif { \"all\" , no_argument , NULL , 3 } , { \"log-console\" , no_argument , NULL , 'l' } , { \"log-detail\" , no_argument , NULL , 'D' } , { \"log-facility\" , required_argument , NULL , 'S' } , { \"log-file\" , optional_argument , NULL , 'g' } , { \"flush-log-file\" , no_argument , NULL , 2 } , { \"no-syslog\" , no_argument , NULL , 'G' } , <S2SV_StartBug> # ifdef _WITH_VRRP_ <S2SV_EndBug> { \"release-vips\" , no_argument , NULL , 'X' } , { \"dont-release-vrrp\" , no_argument , NULL , 'V' } , # endif # ifdef _WITH_LVS_ { \"dont-release-ipvs\" , no_argument , NULL , 'I' } , # endif { \"dont-respawn\" , no_argument , NULL , 'R' } , { \"dont-fork\" , no_argument , NULL , 'n' } , { \"dump-conf\" , no_argument , NULL , 'd' } , { \"pid\" , required_argument , NULL , 'p' } , # ifdef _WITH_VRRP_ { \"vrrp_pid\" , required_argument , NULL , 'r' } , # endif # ifdef _WITH_LVS_ { \"checkers_pid\" , required_argument , NULL , 'c' } , { \"address-monitoring\" , no_argument , NULL , 'a' } , # endif # ifdef _WITH_BFD_ { \"bfd_pid\" , required_argument , NULL , 'b' } , # endif # ifdef _WITH_SNMP_ { \"snmp\" , no_argument , NULL , 'x' } , { \"snmp-agent-socket\" , required_argument , NULL , 'A' } , # endif { \"core-dump\" , no_argument , NULL , 'm' } , { \"core-dump-pattern\" , optional_argument , NULL , 'M' } , # ifdef _MEM_CHECK_LOG_ { \"mem-check-log\" , no_argument , NULL , 'L' } , # endif # if HAVE_DECL_CLONE_NEWNET { \"namespace\" , required_argument , NULL , 's' } , # endif { \"config-id\" , required_argument , NULL , 'i' } , { \"signum\" , required_argument , NULL , 4 } , { \"config-test\" , optional_argument , NULL , 't' } , # ifdef _WITH_PERF_ { \"perf\" , optional_argument , NULL , 5 } , # endif # ifdef WITH_DEBUG_OPTIONS { \"debug\" , optional_argument , NULL , 6 } , # endif { \"version\" , no_argument , NULL , 'v' } , { \"help\" , no_argument , NULL , 'h' } , { NULL , 0 , NULL , 0 } } ; curind = optind ; <S2SV_StartBug> while ( longindex = - 1 , ( c = getopt_long ( argc , argv , \":vhlndDRS:f:p:i:mM::g::Gt::\" <S2SV_EndBug> # if defined _WITH_VRRP_ && defined _WITH_LVS_ \"PC\" # endif # ifdef _WITH_VRRP_ \"r:VX\" # endif # ifdef _WITH_LVS_ \"ac:I\" # endif # ifdef _WITH_BFD_ \"Bb:\" # endif # ifdef _WITH_SNMP_ \"xA:\" # endif # ifdef _MEM_CHECK_LOG_ \"L\" # endif # if HAVE_DECL_CLONE_NEWNET \"s:\" # endif , long_options , & longindex ) ) != - 1 ) { if ( longindex >= 0 && long_options [ longindex ] . has_arg == required_argument && optarg && ! optarg [ 0 ] ) { c = ':' ; optarg = NULL ; } switch ( c ) { case 'v' : fprintf ( stderr , \"%s\" , version_string ) ; # ifdef GIT_COMMIT fprintf ( stderr , \",<S2SV_blank>git<S2SV_blank>commit<S2SV_blank>%s\" , GIT_COMMIT ) ; # endif fprintf ( stderr , \"\\\\n\\\\n%s\\\\n\\\\n\" , COPYRIGHT_STRING ) ; fprintf ( stderr , \"Built<S2SV_blank>with<S2SV_blank>kernel<S2SV_blank>headers<S2SV_blank>for<S2SV_blank>Linux<S2SV_blank>%d.%d.%d\\\\n\" , ( LINUX_VERSION_CODE >> 16 ) & 0xff , ( LINUX_VERSION_CODE >> 8 ) & 0xff , ( LINUX_VERSION_CODE ) & 0xff ) ; uname ( & uname_buf ) ; fprintf ( stderr , \"Running<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\\\\n\" , uname_buf . sysname , uname_buf . release , uname_buf . version ) ; fprintf ( stderr , \"configure<S2SV_blank>options:<S2SV_blank>%s\\\\n\\\\n\" , KEEPALIVED_CONFIGURE_OPTIONS ) ; fprintf ( stderr , \"Config<S2SV_blank>options:<S2SV_blank>%s\\\\n\\\\n\" , CONFIGURATION_OPTIONS ) ; fprintf ( stderr , \"System<S2SV_blank>options:<S2SV_blank>%s\\\\n\" , SYSTEM_OPTIONS ) ; exit ( 0 ) ; break ; case 'h' : usage ( argv [ 0 ] ) ; exit ( 0 ) ; break ; case 'l' : __set_bit ( LOG_CONSOLE_BIT , & debug ) ; reopen_log = true ; break ; case 'n' : __set_bit ( DONT_FORK_BIT , & debug ) ; break ; case 'd' : __set_bit ( DUMP_CONF_BIT , & debug ) ; break ; # ifdef _WITH_VRRP_ case 'V' : __set_bit ( DONT_RELEASE_VRRP_BIT , & debug ) ; break ; # endif # ifdef _WITH_LVS_ case 'I' : __set_bit ( DONT_RELEASE_IPVS_BIT , & debug ) ; break ; # endif case 'D' : if ( __test_bit ( LOG_DETAIL_BIT , & debug ) ) __set_bit ( LOG_EXTRA_DETAIL_BIT , & debug ) ; else __set_bit ( LOG_DETAIL_BIT , & debug ) ; break ; case 'R' : __set_bit ( DONT_RESPAWN_BIT , & debug ) ; break ; # ifdef _WITH_VRRP_ case 'X' : __set_bit ( RELEASE_VIPS_BIT , & debug ) ; break ; # endif case 'S' : if ( ! read_unsigned ( optarg , & facility , 0 , LOG_FACILITY_MAX , false ) ) fprintf ( stderr , \"Invalid<S2SV_blank>log<S2SV_blank>facility<S2SV_blank>\\'%s\\'\\\\n\" , optarg ) ; else { log_facility = LOG_FACILITY [ facility ] . facility ; reopen_log = true ; } break ; case 'g' : if ( optarg && optarg [ 0 ] ) log_file_name = optarg ; else log_file_name = \"/tmp/keepalived.log\" ; open_log_file ( log_file_name , NULL , NULL , NULL ) ; break ; case 'G' : __set_bit ( NO_SYSLOG_BIT , & debug ) ; reopen_log = true ; break ; <S2SV_StartBug> case 't' : <S2SV_EndBug> __set_bit ( CONFIG_TEST_BIT , & debug ) ; __set_bit ( DONT_RESPAWN_BIT , & debug ) ; __set_bit ( DONT_FORK_BIT , & debug ) ; __set_bit ( NO_SYSLOG_BIT , & debug ) ; if ( optarg && optarg [ 0 ] ) { int fd = open ( optarg , O_WRONLY | O_APPEND | O_CREAT , S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ) ; if ( fd == - 1 ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>config-test<S2SV_blank>log<S2SV_blank>file<S2SV_blank>%s\\\\n\" , optarg ) ; exit ( EXIT_FAILURE ) ; } dup2 ( fd , STDERR_FILENO ) ; close ( fd ) ; } break ; case 'f' : conf_file = optarg ; break ; case 2 : set_flush_log_file ( ) ; break ; # if defined _WITH_VRRP_ && defined _WITH_LVS_ case 'P' : __clear_bit ( DAEMON_CHECKERS , & daemon_mode ) ; break ; case 'C' : __clear_bit ( DAEMON_VRRP , & daemon_mode ) ; break ; # endif # ifdef _WITH_BFD_ case 'B' : __clear_bit ( DAEMON_BFD , & daemon_mode ) ; break ; # endif case 'p' : main_pidfile = optarg ; break ; # ifdef _WITH_LVS_ case 'c' : checkers_pidfile = optarg ; break ; case 'a' : __set_bit ( LOG_ADDRESS_CHANGES , & debug ) ; break ; # endif # ifdef _WITH_VRRP_ case 'r' : vrrp_pidfile = optarg ; break ; # endif # ifdef _WITH_BFD_ case 'b' : bfd_pidfile = optarg ; break ; # endif # ifdef _WITH_SNMP_ case 'x' : snmp = 1 ; break ; case 'A' : snmp_socket = optarg ; break ; # endif case 'M' : set_core_dump_pattern = true ; if ( optarg && optarg [ 0 ] ) core_dump_pattern = optarg ; case 'm' : create_core_dump = true ; break ; # ifdef _MEM_CHECK_LOG_ case 'L' : __set_bit ( MEM_CHECK_LOG_BIT , & debug ) ; break ; # endif # if HAVE_DECL_CLONE_NEWNET case 's' : override_namespace = MALLOC ( strlen ( optarg ) + 1 ) ; strcpy ( override_namespace , optarg ) ; break ; # endif case 'i' : FREE_PTR ( config_id ) ; config_id = MALLOC ( strlen ( optarg ) + 1 ) ; strcpy ( config_id , optarg ) ; break ; case 4 : signum = get_signum ( optarg ) ; if ( signum == - 1 ) { fprintf ( stderr , \"Unknown<S2SV_blank>sigfunc<S2SV_blank>%s\\\\n\" , optarg ) ; exit ( 1 ) ; } printf ( \"%d\\\\n\" , signum ) ; exit ( 0 ) ; break ; case 3 : __set_bit ( RUN_ALL_CHILDREN , & daemon_mode ) ; # ifdef _WITH_VRRP_ __set_bit ( DAEMON_VRRP , & daemon_mode ) ; # endif # ifdef _WITH_LVS_ __set_bit ( DAEMON_CHECKERS , & daemon_mode ) ; # endif # ifdef _WITH_BFD_ __set_bit ( DAEMON_BFD , & daemon_mode ) ; # endif break ; # ifdef _WITH_PERF_ case 5 : if ( optarg && optarg [ 0 ] ) { if ( ! strcmp ( optarg , \"run\" ) ) perf_run = PERF_RUN ; else if ( ! strcmp ( optarg , \"all\" ) ) perf_run = PERF_ALL ; else if ( ! strcmp ( optarg , \"end\" ) ) perf_run = PERF_END ; else log_message ( LOG_INFO , \"Unknown<S2SV_blank>perf<S2SV_blank>start<S2SV_blank>point<S2SV_blank>%s\" , optarg ) ; } else perf_run = PERF_RUN ; break ; # endif # ifdef WITH_DEBUG_OPTIONS case 6 : set_debug_options ( optarg && optarg [ 0 ] ? optarg : NULL ) ; break ; # endif case '?' : if ( optopt && argv [ curind ] [ 1 ] != '-' ) fprintf ( stderr , \"Unknown<S2SV_blank>option<S2SV_blank>-%c\\\\n\" , optopt ) ; else fprintf ( stderr , \"Unknown<S2SV_blank>option<S2SV_blank>%s\\\\n\" , argv [ curind ] ) ; bad_option = true ; break ; case ':' : if ( optopt && argv [ curind ] [ 1 ] != '-' ) fprintf ( stderr , \"Missing<S2SV_blank>parameter<S2SV_blank>for<S2SV_blank>option<S2SV_blank>-%c\\\\n\" , optopt ) ; else fprintf ( stderr , \"Missing<S2SV_blank>parameter<S2SV_blank>for<S2SV_blank>option<S2SV_blank>--%s\\\\n\" , long_options [ longindex ] . name ) ; bad_option = true ; break ; default : exit ( 1 ) ; break ; } curind = optind ; } if ( optind < argc ) { printf ( \"Unexpected<S2SV_blank>argument(s):<S2SV_blank>\" ) ; while ( optind < argc ) printf ( \"%s<S2SV_blank>\" , argv [ optind ++ ] ) ; printf ( \"\\\\n\" ) ; } if ( bad_option ) exit ( 1 ) ; return reopen_log ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned facility ; mode_t new_umask_val <S2SV_ModStart> 'G' } , { \"umask\" , required_argument , NULL , 'u' } , <S2SV_ModStart> , argv , \":vhlndu:DRS:f:p:i:mM::g::Gt::\" <S2SV_ModEnd> # if defined <S2SV_ModStart> break ; case 'u' : new_umask_val = set_umask ( optarg ) ; if ( umask_cmdline ) umask_val = new_umask_val ; break ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2647\n\n```\nCWE-476 static int asymmetric_key_match_preparse ( struct key_match_data * match_data ) { match_data -> lookup_type = KEYRING_SEARCH_LOOKUP_ITERATE ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = KEYRING_SEARCH_LOOKUP_ITERATE ; match_data -> cmp = asymmetric_key_cmp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 static long ext4_zero_range ( struct file * file , loff_t offset , loff_t len , int mode ) { struct inode * inode = file_inode ( file ) ; handle_t * handle = NULL ; unsigned int max_blocks ; loff_t new_size = 0 ; int ret = 0 ; int flags ; int credits ; int partial_begin , partial_end ; loff_t start , end ; ext4_lblk_t lblk ; <S2SV_StartBug> struct address_space * mapping = inode -> i_mapping ; <S2SV_EndBug> unsigned int blkbits = inode -> i_blkbits ; trace_ext4_zero_range ( inode , offset , len , mode ) ; if ( ! S_ISREG ( inode -> i_mode ) ) return - EINVAL ; if ( ext4_should_journal_data ( inode ) ) { ret = ext4_force_commit ( inode -> i_sb ) ; if ( ret ) return ret ; } <S2SV_StartBug> if ( mapping -> nrpages && mapping_tagged ( mapping , PAGECACHE_TAG_DIRTY ) ) { <S2SV_EndBug> ret = filemap_write_and_wait_range ( mapping , offset , offset + len - 1 ) ; if ( ret ) return ret ; } start = round_up ( offset , 1 << blkbits ) ; end = round_down ( ( offset + len ) , 1 << blkbits ) ; if ( start < offset || end > offset + len ) return - EINVAL ; partial_begin = offset & ( ( 1 << blkbits ) - 1 ) ; partial_end = ( offset + len ) & ( ( 1 << blkbits ) - 1 ) ; lblk = start >> blkbits ; max_blocks = ( end >> blkbits ) ; if ( max_blocks < lblk ) max_blocks = 0 ; else max_blocks -= lblk ; mutex_lock ( & inode -> i_mutex ) ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) { ret = - EOPNOTSUPP ; goto out_mutex ; } if ( ! ( mode & FALLOC_FL_KEEP_SIZE ) && offset + len > i_size_read ( inode ) ) { new_size = offset + len ; ret = inode_newsize_ok ( inode , new_size ) ; if ( ret ) goto out_mutex ; } flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT ; if ( mode & FALLOC_FL_KEEP_SIZE ) flags |= EXT4_GET_BLOCKS_KEEP_SIZE ; if ( partial_begin || partial_end ) { ret = ext4_alloc_file_blocks ( file , round_down ( offset , 1 << blkbits ) >> blkbits , ( round_up ( ( offset + len ) , 1 << blkbits ) - round_down ( offset , 1 << blkbits ) ) >> blkbits , new_size , flags , mode ) ; if ( ret ) goto out_mutex ; } if ( max_blocks > 0 ) { flags |= ( EXT4_GET_BLOCKS_CONVERT_UNWRITTEN | EXT4_EX_NOCACHE ) ; <S2SV_StartBug> truncate_pagecache_range ( inode , start , end - 1 ) ; <S2SV_EndBug> inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; <S2SV_StartBug> ext4_inode_block_unlocked_dio ( inode ) ; <S2SV_EndBug> inode_dio_wait ( inode ) ; ret = ext4_alloc_file_blocks ( file , lblk , max_blocks , new_size , <S2SV_StartBug> flags , mode ) ; <S2SV_EndBug> if ( ret ) goto out_dio ; } if ( ! partial_begin && ! partial_end ) goto out_dio ; credits = ( 2 * ext4_ext_index_trans_blocks ( inode , 2 ) ) + 1 ; if ( ext4_should_journal_data ( inode ) ) credits += 2 ; handle = ext4_journal_start ( inode , EXT4_HT_MISC , credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; ext4_std_error ( inode -> i_sb , ret ) ; goto out_dio ; } inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; if ( new_size ) { ext4_update_inode_size ( inode , new_size ) ; } else { if ( ( offset + len ) > i_size_read ( inode ) ) ext4_set_inode_flag ( inode , EXT4_INODE_EOFBLOCKS ) ; } ext4_mark_inode_dirty ( handle , inode ) ; ret = ext4_zero_partial_blocks ( handle , inode , offset , len ) ; if ( file -> f_flags & O_SYNC ) ext4_handle_sync ( handle ) ; ext4_journal_stop ( handle ) ; out_dio : ext4_inode_resume_unlocked_dio ( inode ) ; out_mutex : mutex_unlock ( & inode -> i_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext4_lblk_t lblk ; <S2SV_ModEnd> unsigned int blkbits <S2SV_ModStart> ret ; } <S2SV_ModEnd> start = round_up <S2SV_ModStart> EXT4_EX_NOCACHE ) ; ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> inode ) ; <S2SV_ModEnd> ret = ext4_alloc_file_blocks <S2SV_ModStart> flags , mode ) ; up_write ( & EXT4_I ( inode ) -> i_mmap_sem\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8740\n\n```\nCWE-20 apr_status_t h2_stream_add_header ( h2_stream * stream , const char * name , size_t nlen , const char * value , size_t vlen ) { <S2SV_StartBug> ap_assert ( stream ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! stream -> has_response ) { <S2SV_EndBug> if ( name [ 0 ] == ':' ) { if ( ( vlen ) > stream -> session -> s -> limit_req_line ) { ap_log_cerror ( APLOG_MARK , APLOG_TRACE1 , 0 , stream -> session -> c , \"h2_stream(%ld-%d):<S2SV_blank>pseudo<S2SV_blank>header<S2SV_blank>%s<S2SV_blank>too<S2SV_blank>long\" , stream -> session -> id , stream -> id , name ) ; <S2SV_StartBug> return h2_stream_set_error ( stream , <S2SV_EndBug> HTTP_REQUEST_URI_TOO_LARGE ) ; } } else if ( ( nlen + 2 + vlen ) > stream -> session -> s -> limit_req_fieldsize ) { ap_log_cerror ( APLOG_MARK , APLOG_TRACE1 , 0 , stream -> session -> c , \"h2_stream(%ld-%d):<S2SV_blank>header<S2SV_blank>%s<S2SV_blank>too<S2SV_blank>long\" , stream -> session -> id , stream -> id , name ) ; <S2SV_StartBug> return h2_stream_set_error ( stream , <S2SV_EndBug> <S2SV_StartBug> HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE ) ; <S2SV_EndBug> } if ( name [ 0 ] != ':' ) { ++ stream -> request_headers_added ; if ( stream -> request_headers_added > stream -> session -> s -> limit_req_fields ) { ap_log_cerror ( APLOG_MARK , APLOG_TRACE1 , 0 , stream -> session -> c , \"h2_stream(%ld-%d):<S2SV_blank>too<S2SV_blank>many<S2SV_blank>header<S2SV_blank>lines\" , stream -> session -> id , stream -> id ) ; return h2_stream_set_error ( stream , HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE ) ; } } } if ( h2_stream_is_scheduled ( stream ) ) { return add_trailer ( stream , name , nlen , value , vlen ) ; } else { if ( ! stream -> rtmp ) { stream -> rtmp = h2_req_create ( stream -> id , stream -> pool , NULL , NULL , NULL , NULL , NULL , 0 ) ; } if ( stream -> state != H2_STREAM_ST_OPEN ) { return APR_ECONNRESET ; } return h2_request_add_header ( stream -> rtmp , stream -> pool , name , nlen , value , vlen ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vlen ) { int error = 0 ; <S2SV_ModStart> ; if ( <S2SV_ModEnd> stream -> has_response <S2SV_ModStart> has_response ) { return APR_EINVAL ; } ++ stream -> request_headers_added ; <S2SV_ModStart> name ) ; error = HTTP_REQUEST_URI_TOO_LARGE <S2SV_ModEnd> ; } } <S2SV_ModStart> name ) ; error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE ; } if ( stream -> request_headers_added > stream -> session -> s -> limit_req_fields + 4 ) { if ( stream -> request_headers_added > stream -> session -> s -> limit_req_fields + 4 + 100 ) { return APR_ECONNRESET ; } ap_log_cerror ( APLOG_MARK , APLOG_TRACE1 , 0 , stream -> session -> c , \"h2_stream(%ld-%d):<S2SV_blank>too<S2SV_blank>many<S2SV_blank>header<S2SV_blank>lines\" , stream -> session -> id , stream -> id ) ; error = HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE ; } if ( h2_stream_is_scheduled ( stream ) ) { return add_trailer ( stream , name , nlen , value , vlen ) ; } else if ( error ) { <S2SV_ModStart> ( stream , error <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 static int fr_add_pvc ( struct net_device * frad , unsigned int dlci , int type ) { hdlc_device * hdlc = dev_to_hdlc ( frad ) ; pvc_device * pvc ; struct net_device * dev ; int used ; if ( ( pvc = add_pvc ( frad , dlci ) ) == NULL ) { netdev_warn ( frad , \"Memory<S2SV_blank>squeeze<S2SV_blank>on<S2SV_blank>fr_add_pvc()\\\\n\" ) ; return - ENOBUFS ; } if ( * get_dev_p ( pvc , type ) ) return - EEXIST ; used = pvc_is_used ( pvc ) ; <S2SV_StartBug> if ( type == ARPHRD_ETHER ) <S2SV_EndBug> dev = alloc_netdev ( 0 , \"pvceth%d\" , ether_setup ) ; <S2SV_StartBug> else <S2SV_EndBug> dev = alloc_netdev ( 0 , \"pvc%d\" , pvc_setup ) ; if ( ! dev ) { netdev_warn ( frad , \"Memory<S2SV_blank>squeeze<S2SV_blank>on<S2SV_blank>fr_pvc()\\\\n\" ) ; delete_unused_pvcs ( hdlc ) ; return - ENOBUFS ; } if ( type == ARPHRD_ETHER ) random_ether_addr ( dev -> dev_addr ) ; else { * ( __be16 * ) dev -> dev_addr = htons ( dlci ) ; dlci_to_q922 ( dev -> broadcast , dlci ) ; } dev -> netdev_ops = & pvc_ops ; dev -> mtu = HDLC_MAX_MTU ; dev -> tx_queue_len = 0 ; dev -> ml_priv = pvc ; if ( register_netdevice ( dev ) != 0 ) { free_netdev ( dev ) ; delete_unused_pvcs ( hdlc ) ; return - EIO ; } dev -> destructor = free_netdev ; * get_dev_p ( pvc , type ) = dev ; if ( ! used ) { state ( hdlc ) -> dce_changed = 1 ; state ( hdlc ) -> dce_pvc_count ++ ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == ARPHRD_ETHER ) { <S2SV_ModStart> ether_setup ) ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3288\n\n```\nCWE-20 static int do_fault ( struct mm_struct * mm , struct vm_area_struct * vma , unsigned long address , pte_t * page_table , pmd_t * pmd , unsigned int flags , pte_t orig_pte ) { pgoff_t pgoff = ( ( ( address & PAGE_MASK ) - vma -> vm_start ) >> PAGE_SHIFT ) + vma -> vm_pgoff ; <S2SV_StartBug> pte_unmap ( page_table ) ; <S2SV_EndBug> if ( ! ( flags & FAULT_FLAG_WRITE ) ) return do_read_fault ( mm , vma , address , pmd , pgoff , flags , orig_pte ) ; if ( ! ( vma -> vm_flags & VM_SHARED ) ) return do_cow_fault ( mm , vma , address , pmd , pgoff , flags , orig_pte ) ; return do_shared_fault ( mm , vma , address , pmd , pgoff , flags , orig_pte ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( page_table ) ; if ( ! vma -> vm_ops -> fault ) return VM_FAULT_SIGBUS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4913\n\n```\nCWE-20 static int rose_parse_ccitt ( unsigned char * p , struct rose_facilities_struct * facilities , int len ) { unsigned char l , n = 0 ; char callsign [ 11 ] ; do { switch ( * p & 0xC0 ) { case 0x00 : p += 2 ; n += 2 ; len -= 2 ; break ; case 0x40 : p += 3 ; n += 3 ; len -= 3 ; break ; case 0x80 : p += 4 ; n += 4 ; len -= 4 ; break ; case 0xC0 : l = p [ 1 ] ; <S2SV_StartBug> if ( * p == FAC_CCITT_DEST_NSAP ) { <S2SV_EndBug> memcpy ( & facilities -> source_addr , p + 7 , ROSE_ADDR_LEN ) ; memcpy ( callsign , p + 12 , l - 10 ) ; callsign [ l - 10 ] = '\\\\0' ; asc2ax ( & facilities -> source_call , callsign ) ; } if ( * p == FAC_CCITT_SRC_NSAP ) { memcpy ( & facilities -> dest_addr , p + 7 , ROSE_ADDR_LEN ) ; memcpy ( callsign , p + 12 , l - 10 ) ; callsign [ l - 10 ] = '\\\\0' ; asc2ax ( & facilities -> dest_call , callsign ) ; } p += l + 2 ; n += l + 2 ; len -= l + 2 ; break ; } } while ( * p != 0x00 && len > 0 ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( l < 10 || l > 20 ) return - 1 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8872\n\n```\nCWE-189 void set_fat ( DOS_FS * fs , uint32_t cluster , int32_t new ) { unsigned char * data = NULL ; int size ; loff_t offs ; if ( new == - 1 ) new = FAT_EOF ( fs ) ; else if ( ( long ) new == - 2 ) new = FAT_BAD ( fs ) ; switch ( fs -> fat_bits ) { case 12 : data = fs -> fat + cluster * 3 / 2 ; offs = fs -> fat_start + cluster * 3 / 2 ; if ( cluster & 1 ) { FAT_ENTRY prevEntry ; get_fat ( & prevEntry , fs -> fat , cluster - 1 , fs ) ; data [ 0 ] = ( ( new & 0xf ) << 4 ) | ( prevEntry . value >> 8 ) ; data [ 1 ] = new >> 4 ; } else { FAT_ENTRY subseqEntry ; <S2SV_StartBug> if ( cluster != fs -> clusters - 1 ) <S2SV_EndBug> get_fat ( & subseqEntry , fs -> fat , cluster + 1 , fs ) ; else subseqEntry . value = 0 ; data [ 0 ] = new & 0xff ; data [ 1 ] = ( new >> 8 ) | ( ( 0xff & subseqEntry . value ) << 4 ) ; } size = 2 ; break ; case 16 : data = fs -> fat + cluster * 2 ; offs = fs -> fat_start + cluster * 2 ; * ( unsigned short * ) data = htole16 ( new ) ; size = 2 ; break ; case 32 : { FAT_ENTRY curEntry ; get_fat ( & curEntry , fs -> fat , cluster , fs ) ; data = fs -> fat + cluster * 4 ; offs = fs -> fat_start + cluster * 4 ; * ( uint32_t * ) data = htole32 ( ( new & 0xfffffff ) | ( curEntry . reserved << 28 ) ) ; size = 4 ; } break ; default : die ( \"Bad<S2SV_blank>FAT<S2SV_blank>entry<S2SV_blank>size:<S2SV_blank>%d<S2SV_blank>bits.\" , fs -> fat_bits ) ; } fs_write ( offs , size , data ) ; if ( fs -> nfats > 1 ) { fs_write ( offs + fs -> fat_size , size , data ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fs -> clusters + <S2SV_ModEnd> 1 ) get_fat\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1870\n\n```\nCWE-200 static void ParseCommon ( map_string_t * settings , const char * conf_filename ) { const char * value ; value = get_map_string_item_or_NULL ( settings , \"WatchCrashdumpArchiveDir\" ) ; if ( value ) { g_settings_sWatchCrashdumpArchiveDir = xstrdup ( value ) ; remove_map_string_item ( settings , \"WatchCrashdumpArchiveDir\" ) ; } value = get_map_string_item_or_NULL ( settings , \"MaxCrashReportsSize\" ) ; if ( value ) { char * end ; errno = 0 ; unsigned long ul = strtoul ( value , & end , 10 ) ; if ( errno || end == value || * end != '\\\\0' || ul > INT_MAX ) error_msg ( \"Error<S2SV_blank>parsing<S2SV_blank>%s<S2SV_blank>setting:<S2SV_blank>\\'%s\\'\" , \"MaxCrashReportsSize\" , value ) ; else g_settings_nMaxCrashReportsSize = ul ; remove_map_string_item ( settings , \"MaxCrashReportsSize\" ) ; } value = get_map_string_item_or_NULL ( settings , \"DumpLocation\" ) ; if ( value ) { g_settings_dump_location = xstrdup ( value ) ; remove_map_string_item ( settings , \"DumpLocation\" ) ; } else g_settings_dump_location = xstrdup ( DEFAULT_DUMP_LOCATION ) ; value = get_map_string_item_or_NULL ( settings , \"DeleteUploaded\" ) ; if ( value ) { g_settings_delete_uploaded = string_to_bool ( value ) ; remove_map_string_item ( settings , \"DeleteUploaded\" ) ; } value = get_map_string_item_or_NULL ( settings , \"AutoreportingEnabled\" ) ; if ( value ) { g_settings_autoreporting = string_to_bool ( value ) ; remove_map_string_item ( settings , \"AutoreportingEnabled\" ) ; } value = get_map_string_item_or_NULL ( settings , \"AutoreportingEvent\" ) ; if ( value ) { g_settings_autoreporting_event = xstrdup ( value ) ; remove_map_string_item ( settings , \"AutoreportingEvent\" ) ; } else g_settings_autoreporting_event = xstrdup ( \"report_uReport\" ) ; value = get_map_string_item_or_NULL ( settings , \"ShortenedReporting\" ) ; if ( value ) { g_settings_shortenedreporting = string_to_bool ( value ) ; remove_map_string_item ( settings , \"ShortenedReporting\" ) ; } else g_settings_shortenedreporting = 0 ; <S2SV_StartBug> GHashTableIter iter ; <S2SV_EndBug> const char * name ; init_map_string_iter ( & iter , settings ) ; while ( next_map_string_iter ( & iter , & name , & value ) ) { error_msg ( \"Unrecognized<S2SV_blank>variable<S2SV_blank>\\'%s\\'<S2SV_blank>in<S2SV_blank>\\'%s\\'\" , name , conf_filename ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; value = get_map_string_item_or_NULL ( settings , \"PrivateReports\" ) ; if ( value ) { g_settings_privatereports = string_to_bool ( value ) ; remove_map_string_item ( settings , \"PrivateReports\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-0429\n\n```\nCWE-119 void TEMPLATE ( process_block_dec ) ( decoder_info_t * decoder_info , int size , int yposY , int xposY , int sub ) { int width = decoder_info -> width ; int height = decoder_info -> height ; stream_t * stream = decoder_info -> stream ; frame_type_t frame_type = decoder_info -> frame_info . frame_type ; int split_flag = 0 ; if ( yposY >= height || xposY >= width ) return ; int decode_this_size = ( yposY + size <= height ) && ( xposY + size <= width ) ; int decode_rectangular_size = ! decode_this_size && frame_type != I_FRAME ; int bit_start = stream -> bitcnt ; int mode = MODE_SKIP ; block_context_t block_context ; TEMPLATE ( find_block_contexts ) ( yposY , xposY , height , width , size , decoder_info -> deblock_data , & block_context , decoder_info -> use_block_contexts ) ; decoder_info -> block_context = & block_context ; split_flag = decode_super_mode ( decoder_info , size , decode_this_size ) ; mode = decoder_info -> mode ; if ( size == ( 1 << decoder_info -> log2_sb_size ) && ( split_flag || mode != MODE_SKIP ) && decoder_info -> max_delta_qp > 0 ) { int delta_qp = read_delta_qp ( stream ) ; int prev_qp ; if ( yposY == 0 && xposY == 0 ) prev_qp = decoder_info -> frame_info . qp ; else prev_qp = decoder_info -> frame_info . qpb ; decoder_info -> frame_info . qpb = prev_qp + delta_qp ; } decoder_info -> bit_count . super_mode [ decoder_info -> bit_count . stat_frame_type ] += ( stream -> bitcnt - bit_start ) ; <S2SV_StartBug> if ( split_flag ) { <S2SV_EndBug> int new_size = size / 2 ; TEMPLATE ( process_block_dec ) ( decoder_info , new_size , yposY + 0 * new_size , xposY + 0 * new_size , sub ) ; TEMPLATE ( process_block_dec ) ( decoder_info , new_size , yposY + 1 * new_size , xposY + 0 * new_size , sub ) ; TEMPLATE ( process_block_dec ) ( decoder_info , new_size , yposY + 0 * new_size , xposY + 1 * new_size , sub ) ; TEMPLATE ( process_block_dec ) ( decoder_info , new_size , yposY + 1 * new_size , xposY + 1 * new_size , sub ) ; } else if ( decode_this_size || decode_rectangular_size ) { decode_block ( decoder_info , size , yposY , xposY , sub ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( split_flag && size >= MIN_BLOCK_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum path_in ( PG_FUNCTION_ARGS ) { char * str = PG_GETARG_CSTRING ( 0 ) ; PATH * path ; int isopen ; char * s ; int npts ; <S2SV_StartBug> int size ; <S2SV_EndBug> int depth = 0 ; if ( ( npts = pair_count ( str , ',' ) ) <= 0 ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"invalid<S2SV_blank>input<S2SV_blank>syntax<S2SV_blank>for<S2SV_blank>type<S2SV_blank>path:<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ) ) ; s = str ; while ( isspace ( ( unsigned char ) * s ) ) s ++ ; if ( ( * s == LDELIM ) && ( strrchr ( s , LDELIM ) == s ) ) { s ++ ; depth ++ ; } <S2SV_StartBug> size = offsetof ( PATH , p [ 0 ] ) + sizeof ( path -> p [ 0 ] ) * npts ; <S2SV_EndBug> path = ( PATH * ) palloc ( size ) ; SET_VARSIZE ( path , size ) ; path -> npts = npts ; if ( ( ! path_decode ( TRUE , npts , s , & isopen , & s , & ( path -> p [ 0 ] ) ) ) && ( ! ( ( depth == 0 ) && ( * s == '\\\\0' ) ) ) && ! ( ( depth >= 1 ) && ( * s == RDELIM ) ) ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"invalid<S2SV_blank>input<S2SV_blank>syntax<S2SV_blank>for<S2SV_blank>type<S2SV_blank>path:<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ) ) ; path -> closed = ( ! isopen ) ; path -> dummy = 0 ; PG_RETURN_PATH_P ( path ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int size ; int base_size <S2SV_ModStart> ++ ; } base_size = sizeof ( path -> <S2SV_ModEnd> p [ 0 <S2SV_ModStart> 0 ] ) * npts ; size = offsetof ( PATH , <S2SV_ModEnd> p [ 0 <S2SV_ModStart> 0 ] ) + base_size ; if ( base_size / npts != sizeof ( path -> p [ 0 ] ) || size <= base_size ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"too<S2SV_blank>many<S2SV_blank>points<S2SV_blank>requested\" ) ) ) <S2SV_ModEnd> ; path =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 IMPEG2D_ERROR_CODES_T impeg2d_dec_pic_ext_data ( dec_state_t * ps_dec ) { stream_t * ps_stream ; UWORD32 u4_start_code ; IMPEG2D_ERROR_CODES_T e_error ; e_error = ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; ps_stream = & ps_dec -> s_bit_stream ; u4_start_code = impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) ; while ( ( u4_start_code == EXTENSION_START_CODE || u4_start_code == USER_DATA_START_CODE ) && <S2SV_StartBug> ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE == e_error ) <S2SV_EndBug> { if ( u4_start_code == USER_DATA_START_CODE ) { impeg2d_dec_user_data ( ps_dec ) ; } else { impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; u4_start_code = impeg2d_bit_stream_nxt ( ps_stream , EXT_ID_LEN ) ; switch ( u4_start_code ) { case QUANT_MATRIX_EXT_ID : impeg2d_dec_quant_matrix_ext ( ps_dec ) ; break ; case COPYRIGHT_EXT_ID : impeg2d_dec_copyright_ext ( ps_dec ) ; break ; case PIC_DISPLAY_EXT_ID : impeg2d_dec_pic_disp_ext ( ps_dec ) ; break ; case CAMERA_PARAM_EXT_ID : impeg2d_dec_cam_param_ext ( ps_dec ) ; break ; case ITU_T_EXT_ID : impeg2d_dec_itu_t_ext ( ps_dec ) ; break ; case PIC_SPATIAL_SCALABLE_EXT_ID : case PIC_TEMPORAL_SCALABLE_EXT_ID : e_error = IMPEG2D_SCALABLITY_NOT_SUP ; break ; default : impeg2d_bit_stream_flush ( ps_stream , EXT_ID_LEN ) ; impeg2d_next_start_code ( ps_dec ) ; break ; } } u4_start_code = impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) ; } return e_error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IVD_ERROR_NONE == e_error && ( ps_stream -> u4_offset < ps_stream -> u4_max_offset )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8884\n\n```\nCWE-476 jas_image_t * bmp_decode ( jas_stream_t * in , char * optstr ) { jas_image_t * image ; bmp_hdr_t hdr ; bmp_info_t * info ; uint_fast16_t cmptno ; jas_image_cmptparm_t cmptparms [ 3 ] ; jas_image_cmptparm_t * cmptparm ; uint_fast16_t numcmpts ; long n ; <S2SV_StartBug> if ( optstr ) { <S2SV_EndBug> jas_eprintf ( \"warning:<S2SV_blank>ignoring<S2SV_blank>BMP<S2SV_blank>decoder<S2SV_blank>options\\\\n\" ) ; } jas_eprintf ( \"THE<S2SV_blank>BMP<S2SV_blank>FORMAT<S2SV_blank>IS<S2SV_blank>NOT<S2SV_blank>FULLY<S2SV_blank>SUPPORTED!\\\\n\" \"THAT<S2SV_blank>IS,<S2SV_blank>THE<S2SV_blank>JASPER<S2SV_blank>SOFTWARE<S2SV_blank>CANNOT<S2SV_blank>DECODE<S2SV_blank>ALL<S2SV_blank>TYPES<S2SV_blank>OF<S2SV_blank>BMP<S2SV_blank>DATA.\\\\n\" \"IF<S2SV_blank>YOU<S2SV_blank>HAVE<S2SV_blank>ANY<S2SV_blank>PROBLEMS,<S2SV_blank>PLEASE<S2SV_blank>TRY<S2SV_blank>CONVERTING<S2SV_blank>YOUR<S2SV_blank>IMAGE<S2SV_blank>DATA\\\\n\" \"TO<S2SV_blank>THE<S2SV_blank>PNM<S2SV_blank>FORMAT,<S2SV_blank>AND<S2SV_blank>USING<S2SV_blank>THIS<S2SV_blank>FORMAT<S2SV_blank>INSTEAD.\\\\n\" ) ; if ( bmp_gethdr ( in , & hdr ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>header\\\\n\" ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } JAS_DBGLOG ( 1 , ( \"BMP<S2SV_blank>header:<S2SV_blank>magic<S2SV_blank>0x%x;<S2SV_blank>siz<S2SV_blank>%d;<S2SV_blank>res1<S2SV_blank>%d;<S2SV_blank>res2<S2SV_blank>%d;<S2SV_blank>off<S2SV_blank>%d\\\\n\" , hdr . magic , hdr . siz , hdr . reserved1 , hdr . reserved2 , hdr . off ) ) ; if ( ! ( info = bmp_getinfo ( in ) ) ) { jas_eprintf ( \"cannot<S2SV_blank>get<S2SV_blank>info\\\\n\" ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } JAS_DBGLOG ( 1 , <S2SV_StartBug> ( \"BMP<S2SV_blank>information:<S2SV_blank>len<S2SV_blank>%d;<S2SV_blank>width<S2SV_blank>%d;<S2SV_blank>height<S2SV_blank>%d;<S2SV_blank>numplanes<S2SV_blank>%d;<S2SV_blank>\" <S2SV_EndBug> \"depth<S2SV_blank>%d;<S2SV_blank>enctype<S2SV_blank>%d;<S2SV_blank>siz<S2SV_blank>%d;<S2SV_blank>hres<S2SV_blank>%d;<S2SV_blank>vres<S2SV_blank>%d;<S2SV_blank>numcolors<S2SV_blank>%d;<S2SV_blank>\" <S2SV_StartBug> \"mincolors<S2SV_blank>%d\\\\n\" , info -> len , info -> width , info -> height , info -> numplanes , <S2SV_EndBug> <S2SV_StartBug> info -> depth , info -> enctype , info -> siz , info -> hres , info -> vres , <S2SV_EndBug> <S2SV_StartBug> info -> numcolors , info -> mincolors ) ) ; <S2SV_EndBug> if ( ! bmp_issupported ( & hdr , info ) ) { jas_eprintf ( \"error:<S2SV_blank>unsupported<S2SV_blank>BMP<S2SV_blank>encoding\\\\n\" ) ; <S2SV_StartBug> bmp_info_destroy ( info ) ; <S2SV_EndBug> return 0 ; } if ( ( n = hdr . off - ( BMP_HDRLEN + BMP_INFOLEN + BMP_PALLEN ( info ) ) ) < 0 ) { jas_eprintf ( \"error:<S2SV_blank>possibly<S2SV_blank>bad<S2SV_blank>bitmap<S2SV_blank>offset?\\\\n\" ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } if ( n > 0 ) { jas_eprintf ( \"skipping<S2SV_blank>unknown<S2SV_blank>data<S2SV_blank>in<S2SV_blank>BMP<S2SV_blank>file\\\\n\" ) ; if ( bmp_gobble ( in , n ) ) { <S2SV_StartBug> bmp_info_destroy ( info ) ; <S2SV_EndBug> return 0 ; } } numcmpts = bmp_numcmpts ( info ) ; for ( cmptno = 0 , cmptparm = cmptparms ; cmptno < numcmpts ; ++ cmptno , ++ cmptparm ) { cmptparm -> tlx = 0 ; cmptparm -> tly = 0 ; cmptparm -> hstep = 1 ; cmptparm -> vstep = 1 ; cmptparm -> width = info -> width ; cmptparm -> height = info -> height ; cmptparm -> prec = 8 ; cmptparm -> sgnd = false ; } if ( ! ( image = jas_image_create ( numcmpts , cmptparms , JAS_CLRSPC_UNKNOWN ) ) ) { <S2SV_StartBug> bmp_info_destroy ( info ) ; <S2SV_EndBug> return 0 ; } if ( numcmpts == 3 ) { jas_image_setclrspc ( image , JAS_CLRSPC_SRGB ) ; jas_image_setcmpttype ( image , 0 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_R ) ) ; jas_image_setcmpttype ( image , 1 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_G ) ) ; jas_image_setcmpttype ( image , 2 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_RGB_B ) ) ; } else { jas_image_setclrspc ( image , JAS_CLRSPC_SGRAY ) ; jas_image_setcmpttype ( image , 0 , JAS_IMAGE_CT_COLOR ( JAS_CLRSPC_CHANIND_GRAY_Y ) ) ; } if ( bmp_getdata ( in , info , image ) ) { <S2SV_StartBug> bmp_info_destroy ( info ) ; <S2SV_EndBug> <S2SV_StartBug> jas_image_destroy ( image ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> } <S2SV_StartBug> bmp_info_destroy ( info ) ; <S2SV_EndBug> return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long n ; image = 0 ; info = 0 ; <S2SV_ModStart> \"cannot<S2SV_blank>get<S2SV_blank>header\\\\n\" ) ; goto error <S2SV_ModEnd> ; } JAS_DBGLOG <S2SV_ModStart> \"cannot<S2SV_blank>get<S2SV_blank>info\\\\n\" ) ; goto error <S2SV_ModEnd> ; } JAS_DBGLOG <S2SV_ModStart> 1 , ( \"BMP<S2SV_blank>information:<S2SV_blank>len<S2SV_blank>%ld;<S2SV_blank>width<S2SV_blank>%ld;<S2SV_blank>height<S2SV_blank>%ld;<S2SV_blank>numplanes<S2SV_blank>%d;<S2SV_blank>\" \"depth<S2SV_blank>%d;<S2SV_blank>enctype<S2SV_blank>%ld;<S2SV_blank>siz<S2SV_blank>%ld;<S2SV_blank>hres<S2SV_blank>%ld;<S2SV_blank>vres<S2SV_blank>%ld;<S2SV_blank>numcolors<S2SV_blank>%ld;<S2SV_blank>\" \"mincolors<S2SV_blank>%ld\\\\n\" , JAS_CAST ( long <S2SV_ModEnd> , info -> <S2SV_ModStart> info -> len ) , JAS_CAST ( long <S2SV_ModStart> info -> width ) , JAS_CAST ( long <S2SV_ModStart> info -> height ) , JAS_CAST ( long <S2SV_ModStart> info -> numplanes ) , JAS_CAST ( long , <S2SV_ModEnd> info -> depth <S2SV_ModStart> info -> depth ) , JAS_CAST ( long <S2SV_ModStart> info -> enctype ) , JAS_CAST ( long <S2SV_ModStart> info -> siz ) , JAS_CAST ( long <S2SV_ModStart> info -> hres ) , JAS_CAST ( long <S2SV_ModStart> info -> vres ) , JAS_CAST ( long , <S2SV_ModEnd> info -> numcolors <S2SV_ModStart> info -> numcolors ) , JAS_CAST ( long <S2SV_ModStart> mincolors ) ) ) ; if ( info -> width < 0 || info -> height < 0 || info -> numplanes < 0 || info -> depth < 0 || info -> siz < 0 || info -> hres < 0 || info -> vres < 0 ) { jas_eprintf ( \"corrupt<S2SV_blank>bit<S2SV_blank>stream\\\\n\" ) ; goto error ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> \"error:<S2SV_blank>unsupported<S2SV_blank>BMP<S2SV_blank>encoding\\\\n\" ) ; goto error <S2SV_ModEnd> ; } if <S2SV_ModStart> \"error:<S2SV_blank>possibly<S2SV_blank>bad<S2SV_blank>bitmap<S2SV_blank>offset?\\\\n\" ) ; goto error <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } } <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto error ; } <S2SV_ModStart> info ) ; return image ; error : if ( info ) { bmp_info_destroy ( info ) ; } if ( image ) { <S2SV_ModStart> image ) ; } <S2SV_ModStart> 0 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 void * Sys_LoadDll ( const char * name , qboolean useSystemLib ) { <S2SV_StartBug> void * dllhandle ; <S2SV_EndBug> if ( useSystemLib ) Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name ) ; if ( ! useSystemLib || ! ( dllhandle = Sys_LoadLibrary ( name ) ) ) { const char * topDir ; char libPath [ MAX_OSPATH ] ; topDir = Sys_BinaryPath ( ) ; if ( ! * topDir ) topDir = \".\" ; Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , topDir ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , topDir , PATH_SEP , name ) ; if ( ! ( dllhandle = Sys_LoadLibrary ( libPath ) ) ) { const char * basePath = Cvar_VariableString ( \"fs_basepath\" ) ; if ( ! basePath || ! * basePath ) basePath = \".\" ; if ( FS_FilenameCompare ( topDir , basePath ) ) { Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , basePath ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , basePath , PATH_SEP , name ) ; dllhandle = Sys_LoadLibrary ( libPath ) ; } if ( ! dllhandle ) Com_Printf ( \"Loading<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>failed\\\\n\" , name ) ; } } return dllhandle ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * dllhandle ; if ( COM_CompareExtension ( name , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , name ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4565\n\n```\nCWE-264 static ssize_t ucma_write ( struct file * filp , const char __user * buf , size_t len , loff_t * pos ) { struct ucma_file * file = filp -> private_data ; struct rdma_ucm_cmd_hdr hdr ; <S2SV_StartBug> ssize_t ret ; <S2SV_EndBug> if ( len < sizeof ( hdr ) ) return - EINVAL ; if ( copy_from_user ( & hdr , buf , sizeof ( hdr ) ) ) return - EFAULT ; if ( hdr . cmd >= ARRAY_SIZE ( ucma_cmd_table ) ) return - EINVAL ; if ( hdr . in + sizeof ( hdr ) > len ) return - EINVAL ; if ( ! ucma_cmd_table [ hdr . cmd ] ) return - ENOSYS ; ret = ucma_cmd_table [ hdr . cmd ] ( file , buf + sizeof ( hdr ) , hdr . in , hdr . out ) ; if ( ! ret ) ret = len ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ssize_t ret ; if ( WARN_ON_ONCE ( ! ib_safe_file_access ( filp ) ) ) return - EACCES\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0758\n\n```\nCWE-000 static int asn1_find_indefinite_length ( const unsigned char * data , size_t datalen , size_t * _dp , size_t * _len , const char * * _errmsg ) { unsigned char tag , tmp ; size_t dp = * _dp , len , n ; int indef_level = 1 ; next_tag : if ( unlikely ( datalen - dp < 2 ) ) { if ( datalen == dp ) goto missing_eoc ; goto data_overrun_error ; } tag = data [ dp ++ ] ; <S2SV_StartBug> if ( tag == 0 ) { <S2SV_EndBug> if ( data [ dp ++ ] != 0 ) goto invalid_eoc ; if ( -- indef_level <= 0 ) { * _len = dp - * _dp ; * _dp = dp ; return 0 ; } goto next_tag ; } if ( unlikely ( ( tag & 0x1f ) == ASN1_LONG_TAG ) ) { do { if ( unlikely ( datalen - dp < 2 ) ) goto data_overrun_error ; tmp = data [ dp ++ ] ; } while ( tmp & 0x80 ) ; } len = data [ dp ++ ] ; <S2SV_StartBug> if ( len <= 0x7f ) { <S2SV_EndBug> dp += len ; goto next_tag ; } if ( unlikely ( len == ASN1_INDEFINITE_LENGTH ) ) { if ( unlikely ( ( tag & ASN1_CONS_BIT ) == ASN1_PRIM << 5 ) ) goto indefinite_len_primitive ; indef_level ++ ; goto next_tag ; } n = len - 0x80 ; <S2SV_StartBug> if ( unlikely ( n > sizeof ( size_t ) - 1 ) ) <S2SV_EndBug> goto length_too_long ; if ( unlikely ( n > datalen - dp ) ) goto data_overrun_error ; <S2SV_StartBug> for ( len = 0 ; n > 0 ; n -- ) { <S2SV_EndBug> len <<= 8 ; len |= data [ dp ++ ] ; } <S2SV_StartBug> dp += len ; <S2SV_EndBug> goto next_tag ; length_too_long : * _errmsg = \"Unsupported<S2SV_blank>length\" ; goto error ; indefinite_len_primitive : * _errmsg = \"Indefinite<S2SV_blank>len<S2SV_blank>primitive<S2SV_blank>not<S2SV_blank>permitted\" ; goto error ; invalid_eoc : * _errmsg = \"Invalid<S2SV_blank>length<S2SV_blank>EOC\" ; goto error ; data_overrun_error : * _errmsg = \"Data<S2SV_blank>overrun<S2SV_blank>error\" ; goto error ; missing_eoc : * _errmsg = \"Missing<S2SV_blank>EOC<S2SV_blank>in<S2SV_blank>indefinite<S2SV_blank>len<S2SV_blank>cons\" ; error : * _dp = dp ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( tag == ASN1_EOC <S2SV_ModEnd> ) { if <S2SV_ModStart> <= 0x7f ) goto check_length ; <S2SV_ModEnd> if ( unlikely <S2SV_ModStart> > sizeof ( len <S2SV_ModEnd> ) - 1 <S2SV_ModStart> goto data_overrun_error ; len = 0 ; for ( <S2SV_ModEnd> ; n > <S2SV_ModStart> ] ; } check_length : if ( len > datalen - dp ) goto data_overrun_error ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14991\n\n```\nCWE-200 static long sg_ioctl ( struct file * filp , unsigned int cmd_in , unsigned long arg ) { void __user * p = ( void __user * ) arg ; int __user * ip = p ; int result , val , read_only ; Sg_device * sdp ; Sg_fd * sfp ; Sg_request * srp ; unsigned long iflags ; if ( ( ! ( sfp = ( Sg_fd * ) filp -> private_data ) ) || ( ! ( sdp = sfp -> parentdp ) ) ) return - ENXIO ; SCSI_LOG_TIMEOUT ( 3 , sg_printk ( KERN_INFO , sdp , \"sg_ioctl:<S2SV_blank>cmd=0x%x\\\\n\" , ( int ) cmd_in ) ) ; read_only = ( O_RDWR != ( filp -> f_flags & O_ACCMODE ) ) ; switch ( cmd_in ) { case SG_IO : if ( atomic_read ( & sdp -> detaching ) ) return - ENODEV ; if ( ! scsi_block_when_processing_errors ( sdp -> device ) ) return - ENXIO ; if ( ! access_ok ( VERIFY_WRITE , p , SZ_SG_IO_HDR ) ) return - EFAULT ; result = sg_new_write ( sfp , filp , p , SZ_SG_IO_HDR , 1 , read_only , 1 , & srp ) ; if ( result < 0 ) return result ; result = wait_event_interruptible ( sfp -> read_wait , ( srp_done ( sfp , srp ) || atomic_read ( & sdp -> detaching ) ) ) ; if ( atomic_read ( & sdp -> detaching ) ) return - ENODEV ; write_lock_irq ( & sfp -> rq_list_lock ) ; if ( srp -> done ) { srp -> done = 2 ; write_unlock_irq ( & sfp -> rq_list_lock ) ; result = sg_new_read ( sfp , p , SZ_SG_IO_HDR , srp ) ; return ( result < 0 ) ? result : 0 ; } srp -> orphan = 1 ; write_unlock_irq ( & sfp -> rq_list_lock ) ; return result ; case SG_SET_TIMEOUT : result = get_user ( val , ip ) ; if ( result ) return result ; if ( val < 0 ) return - EIO ; if ( val >= mult_frac ( ( s64 ) INT_MAX , USER_HZ , HZ ) ) val = min_t ( s64 , mult_frac ( ( s64 ) INT_MAX , USER_HZ , HZ ) , INT_MAX ) ; sfp -> timeout_user = val ; sfp -> timeout = mult_frac ( val , HZ , USER_HZ ) ; return 0 ; case SG_GET_TIMEOUT : return sfp -> timeout_user ; case SG_SET_FORCE_LOW_DMA : return 0 ; case SG_GET_LOW_DMA : return put_user ( ( int ) sdp -> device -> host -> unchecked_isa_dma , ip ) ; case SG_GET_SCSI_ID : if ( ! access_ok ( VERIFY_WRITE , p , sizeof ( sg_scsi_id_t ) ) ) return - EFAULT ; else { sg_scsi_id_t __user * sg_idp = p ; if ( atomic_read ( & sdp -> detaching ) ) return - ENODEV ; __put_user ( ( int ) sdp -> device -> host -> host_no , & sg_idp -> host_no ) ; __put_user ( ( int ) sdp -> device -> channel , & sg_idp -> channel ) ; __put_user ( ( int ) sdp -> device -> id , & sg_idp -> scsi_id ) ; __put_user ( ( int ) sdp -> device -> lun , & sg_idp -> lun ) ; __put_user ( ( int ) sdp -> device -> type , & sg_idp -> scsi_type ) ; __put_user ( ( short ) sdp -> device -> host -> cmd_per_lun , & sg_idp -> h_cmd_per_lun ) ; __put_user ( ( short ) sdp -> device -> queue_depth , & sg_idp -> d_queue_depth ) ; __put_user ( 0 , & sg_idp -> unused [ 0 ] ) ; __put_user ( 0 , & sg_idp -> unused [ 1 ] ) ; return 0 ; } case SG_SET_FORCE_PACK_ID : result = get_user ( val , ip ) ; if ( result ) return result ; sfp -> force_packid = val ? 1 : 0 ; return 0 ; case SG_GET_PACK_ID : if ( ! access_ok ( VERIFY_WRITE , ip , sizeof ( int ) ) ) return - EFAULT ; read_lock_irqsave ( & sfp -> rq_list_lock , iflags ) ; list_for_each_entry ( srp , & sfp -> rq_list , entry ) { if ( ( 1 == srp -> done ) && ( ! srp -> sg_io_owned ) ) { read_unlock_irqrestore ( & sfp -> rq_list_lock , iflags ) ; __put_user ( srp -> header . pack_id , ip ) ; return 0 ; } } read_unlock_irqrestore ( & sfp -> rq_list_lock , iflags ) ; __put_user ( - 1 , ip ) ; return 0 ; case SG_GET_NUM_WAITING : read_lock_irqsave ( & sfp -> rq_list_lock , iflags ) ; val = 0 ; list_for_each_entry ( srp , & sfp -> rq_list , entry ) { if ( ( 1 == srp -> done ) && ( ! srp -> sg_io_owned ) ) ++ val ; } read_unlock_irqrestore ( & sfp -> rq_list_lock , iflags ) ; return put_user ( val , ip ) ; case SG_GET_SG_TABLESIZE : return put_user ( sdp -> sg_tablesize , ip ) ; case SG_SET_RESERVED_SIZE : result = get_user ( val , ip ) ; if ( result ) return result ; if ( val < 0 ) return - EINVAL ; val = min_t ( int , val , max_sectors_bytes ( sdp -> device -> request_queue ) ) ; mutex_lock ( & sfp -> f_mutex ) ; if ( val != sfp -> reserve . bufflen ) { if ( sfp -> mmap_called || sfp -> res_in_use ) { mutex_unlock ( & sfp -> f_mutex ) ; return - EBUSY ; } sg_remove_scat ( sfp , & sfp -> reserve ) ; sg_build_reserve ( sfp , val ) ; } mutex_unlock ( & sfp -> f_mutex ) ; return 0 ; case SG_GET_RESERVED_SIZE : val = min_t ( int , sfp -> reserve . bufflen , max_sectors_bytes ( sdp -> device -> request_queue ) ) ; return put_user ( val , ip ) ; case SG_SET_COMMAND_Q : result = get_user ( val , ip ) ; if ( result ) return result ; sfp -> cmd_q = val ? 1 : 0 ; return 0 ; case SG_GET_COMMAND_Q : return put_user ( ( int ) sfp -> cmd_q , ip ) ; case SG_SET_KEEP_ORPHAN : result = get_user ( val , ip ) ; if ( result ) return result ; sfp -> keep_orphan = val ; return 0 ; case SG_GET_KEEP_ORPHAN : return put_user ( ( int ) sfp -> keep_orphan , ip ) ; case SG_NEXT_CMD_LEN : result = get_user ( val , ip ) ; if ( result ) return result ; if ( val > SG_MAX_CDB_SIZE ) return - ENOMEM ; sfp -> next_cmd_len = ( val > 0 ) ? val : 0 ; return 0 ; case SG_GET_VERSION_NUM : return put_user ( sg_version_num , ip ) ; case SG_GET_ACCESS_COUNT : val = ( sdp -> device ? 1 : 0 ) ; return put_user ( val , ip ) ; case SG_GET_REQUEST_TABLE : if ( ! access_ok ( VERIFY_WRITE , p , SZ_SG_REQ_INFO * SG_MAX_QUEUE ) ) return - EFAULT ; else { sg_req_info_t * rinfo ; <S2SV_StartBug> rinfo = kmalloc ( SZ_SG_REQ_INFO * SG_MAX_QUEUE , <S2SV_EndBug> GFP_KERNEL ) ; if ( ! rinfo ) return - ENOMEM ; read_lock_irqsave ( & sfp -> rq_list_lock , iflags ) ; sg_fill_request_table ( sfp , rinfo ) ; read_unlock_irqrestore ( & sfp -> rq_list_lock , iflags ) ; result = __copy_to_user ( p , rinfo , SZ_SG_REQ_INFO * SG_MAX_QUEUE ) ; result = result ? - EFAULT : 0 ; kfree ( rinfo ) ; return result ; } case SG_EMULATED_HOST : if ( atomic_read ( & sdp -> detaching ) ) return - ENODEV ; return put_user ( sdp -> device -> host -> hostt -> emulated , ip ) ; case SCSI_IOCTL_SEND_COMMAND : if ( atomic_read ( & sdp -> detaching ) ) return - ENODEV ; if ( read_only ) { unsigned char opcode = WRITE_6 ; Scsi_Ioctl_Command __user * siocp = p ; if ( copy_from_user ( & opcode , siocp -> data , 1 ) ) return - EFAULT ; if ( sg_allow_access ( filp , & opcode ) ) return - EPERM ; } return sg_scsi_ioctl ( sdp -> device -> request_queue , NULL , filp -> f_mode , p ) ; case SG_SET_DEBUG : result = get_user ( val , ip ) ; if ( result ) return result ; sdp -> sgdebug = ( char ) val ; return 0 ; case BLKSECTGET : return put_user ( max_sectors_bytes ( sdp -> device -> request_queue ) , ip ) ; case BLKTRACESETUP : return blk_trace_setup ( sdp -> device -> request_queue , sdp -> disk -> disk_name , MKDEV ( SCSI_GENERIC_MAJOR , sdp -> index ) , NULL , p ) ; case BLKTRACESTART : return blk_trace_startstop ( sdp -> device -> request_queue , 1 ) ; case BLKTRACESTOP : return blk_trace_startstop ( sdp -> device -> request_queue , 0 ) ; case BLKTRACETEARDOWN : return blk_trace_remove ( sdp -> device -> request_queue ) ; case SCSI_IOCTL_GET_IDLUN : case SCSI_IOCTL_GET_BUS_NUMBER : case SCSI_IOCTL_PROBE_HOST : case SG_GET_TRANSFORM : case SG_SCSI_RESET : if ( atomic_read ( & sdp -> detaching ) ) return - ENODEV ; break ; default : if ( read_only ) return - EPERM ; break ; } result = scsi_ioctl_block_when_processing_errors ( sdp -> device , cmd_in , filp -> f_flags & O_NDELAY ) ; if ( result ) return result ; return scsi_ioctl ( sdp -> device , cmd_in , p ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; rinfo = kzalloc <S2SV_ModEnd> ( SZ_SG_REQ_INFO *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14604\n\n```\nCWE-20 static gboolean is_link_trusted ( NautilusFile * file , gboolean is_launcher ) { GFile * location ; gboolean res ; <S2SV_StartBug> if ( ! is_launcher ) <S2SV_EndBug> { return TRUE ; } <S2SV_StartBug> if ( nautilus_file_can_execute ( file ) ) <S2SV_EndBug> { return TRUE ; } res = FALSE ; if ( nautilus_file_is_local ( file ) ) { location = nautilus_file_get_location ( file ) ; res = nautilus_is_in_system_dir ( location ) ; g_object_unref ( location ) ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gboolean res ; g_autofree gchar * trusted = NULL ; <S2SV_ModStart> TRUE ; } trusted = nautilus_file_get_metadata ( file , NAUTILUS_METADATA_KEY_DESKTOP_FILE_TRUSTED , NULL ) ; <S2SV_ModStart> ( file ) && trusted != NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum bqarr_in ( PG_FUNCTION_ARGS ) { char * buf = ( char * ) PG_GETARG_POINTER ( 0 ) ; WORKSTATE state ; int32 i ; QUERYTYPE * query ; int32 commonlen ; ITEM * ptr ; NODE * tmp ; int32 pos = 0 ; # ifdef BS_DEBUG StringInfoData pbuf ; # endif state . buf = buf ; state . state = WAITOPERAND ; state . count = 0 ; state . num = 0 ; state . str = NULL ; makepol ( & state ) ; if ( ! state . num ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_PARAMETER_VALUE ) , errmsg ( \"empty<S2SV_blank>query\" ) ) ) ; <S2SV_StartBug> commonlen = COMPUTESIZE ( state . num ) ; <S2SV_EndBug> query = ( QUERYTYPE * ) palloc ( commonlen ) ; SET_VARSIZE ( query , commonlen ) ; query -> size = state . num ; ptr = GETQUERY ( query ) ; for ( i = state . num - 1 ; i >= 0 ; i -- ) { ptr [ i ] . type = state . str -> type ; ptr [ i ] . val = state . str -> val ; tmp = state . str -> next ; pfree ( state . str ) ; state . str = tmp ; } pos = query -> size - 1 ; findoprnd ( ptr , & pos ) ; # ifdef BS_DEBUG initStringInfo ( & pbuf ) ; for ( i = 0 ; i < query -> size ; i ++ ) { if ( ptr [ i ] . type == OPR ) appendStringInfo ( & pbuf , \"%c(%d)<S2SV_blank>\" , ptr [ i ] . val , ptr [ i ] . left ) ; else appendStringInfo ( & pbuf , \"%d<S2SV_blank>\" , ptr [ i ] . val ) ; } elog ( DEBUG3 , \"POR:<S2SV_blank>%s\" , pbuf . data ) ; pfree ( pbuf . data ) ; # endif PG_RETURN_POINTER ( query ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( state . num > QUERYTYPEMAXITEMS ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>query<S2SV_blank>items<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , state . num , ( int ) QUERYTYPEMAXITEMS ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1344\n\n```\nCWE-264 int cg_write ( const char * path , const char * buf , size_t size , off_t offset , struct fuse_file_info * fi ) { struct fuse_context * fc = fuse_get_context ( ) ; char * localbuf = NULL ; struct cgfs_files * k = NULL ; struct file_info * f = ( struct file_info * ) fi -> fh ; bool r ; if ( f -> type != LXC_TYPE_CGFILE ) { fprintf ( stderr , \"Internal<S2SV_blank>error:<S2SV_blank>directory<S2SV_blank>cache<S2SV_blank>info<S2SV_blank>used<S2SV_blank>in<S2SV_blank>cg_write\\\\n\" ) ; return - EIO ; } if ( offset ) return 0 ; if ( ! fc ) return - EIO ; localbuf = alloca ( size + 1 ) ; localbuf [ size ] = '\\\\0' ; memcpy ( localbuf , buf , size ) ; if ( ( k = cgfs_get_key ( f -> controller , f -> cgroup , f -> file ) ) == NULL ) { size = - EINVAL ; goto out ; } if ( ! fc_may_access ( fc , f -> controller , f -> cgroup , f -> file , O_WRONLY ) ) { size = - EACCES ; goto out ; } if ( strcmp ( f -> file , \"tasks\" ) == 0 || strcmp ( f -> file , \"/tasks\" ) == 0 || strcmp ( f -> file , \"/cgroup.procs\" ) == 0 || strcmp ( f -> file , \"cgroup.procs\" ) == 0 ) <S2SV_StartBug> r = do_write_pids ( fc -> pid , f -> controller , f -> cgroup , f -> file , localbuf ) ; <S2SV_EndBug> else r = cgfs_set_value ( f -> controller , f -> cgroup , f -> file , localbuf ) ; if ( ! r ) size = - EINVAL ; out : free_key ( k ) ; return size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pid , fc -> uid ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_idct16x16_add ( const int16_t * input , uint8_t * dest , int stride , <S2SV_EndBug> int eob ) { if ( eob == 1 ) <S2SV_StartBug> vp9_idct16x16_1_add ( input , dest , stride ) ; <S2SV_EndBug> else if ( eob <= 10 ) <S2SV_StartBug> vp9_idct16x16_10_add ( input , dest , stride ) ; <S2SV_EndBug> else <S2SV_StartBug> vp9_idct16x16_256_add ( input , dest , stride ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_idct16x16_add ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> == 1 ) vpx_idct16x16_1_add <S2SV_ModEnd> ( input , <S2SV_ModStart> <= 10 ) vpx_idct16x16_10_add <S2SV_ModEnd> ( input , <S2SV_ModStart> ) ; else vpx_idct16x16_256_add <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11664\n\n```\nCWE-125 struct _mdi * _WM_ParseNewMus ( uint8_t * mus_data , uint32_t mus_size ) { uint8_t mus_hdr [ ] = { 'M' , 'U' , 'S' , 0x1A } ; uint32_t mus_song_ofs = 0 ; uint32_t mus_song_len = 0 ; uint16_t mus_ch_cnt1 = 0 ; uint16_t mus_ch_cnt2 = 0 ; uint16_t mus_no_instr = 0 ; uint32_t mus_data_ofs = 0 ; uint16_t * mus_mid_instr = NULL ; uint16_t mus_instr_cnt = 0 ; struct _mdi * mus_mdi ; uint32_t mus_divisions = 60 ; float tempo_f = 0.0 ; uint16_t mus_freq = 0 ; float samples_per_tick_f = 0.0 ; <S2SV_StartBug> uint8_t mus_event [ ] = { 0 , 0 , 0 , 0 } ; <S2SV_EndBug> uint8_t mus_event_size = 0 ; uint8_t mus_prev_vol [ ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 } ; uint32_t setup_ret = 0 ; uint32_t mus_ticks = 0 ; uint32_t sample_count = 0 ; float sample_count_f = 0.0 ; float sample_remainder = 0.0 ; uint16_t pitchbend_tmp = 0 ; if ( mus_size < 17 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_MUS , \"File<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; return NULL ; } if ( memcmp ( mus_data , mus_hdr , 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_MUS , NULL , 0 ) ; return NULL ; } mus_song_len = ( mus_data [ 5 ] << 8 ) | mus_data [ 4 ] ; mus_song_ofs = ( mus_data [ 7 ] << 8 ) | mus_data [ 6 ] ; mus_ch_cnt1 = ( mus_data [ 9 ] << 8 ) | mus_data [ 8 ] ; mus_ch_cnt2 = ( mus_data [ 11 ] << 8 ) | mus_data [ 10 ] ; UNUSED ( mus_ch_cnt1 ) ; UNUSED ( mus_ch_cnt2 ) ; mus_no_instr = ( mus_data [ 13 ] << 8 ) | mus_data [ 12 ] ; mus_data_ofs = 16 ; if ( mus_size < ( mus_data_ofs + ( mus_no_instr << 1 ) + mus_song_len ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_MUS , \"File<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; return NULL ; } mus_mid_instr = malloc ( mus_no_instr * sizeof ( uint16_t ) ) ; for ( mus_instr_cnt = 0 ; mus_instr_cnt < mus_no_instr ; mus_instr_cnt ++ ) { mus_mid_instr [ mus_instr_cnt ] = ( mus_data [ mus_data_ofs + 1 ] << 8 ) | mus_data [ mus_data_ofs ] ; mus_data_ofs += 2 ; } mus_data_ofs = mus_song_ofs ; mus_freq = _cvt_get_option ( WM_CO_FREQUENCY ) ; if ( mus_freq == 0 ) mus_freq = 140 ; if ( ( _WM_MixerOptions & WM_MO_ROUNDTEMPO ) ) { tempo_f = ( float ) ( 60000000 / mus_freq ) + 0.5f ; } else { tempo_f = ( float ) ( 60000000 / mus_freq ) ; } samples_per_tick_f = _WM_GetSamplesPerTick ( mus_divisions , ( uint32_t ) tempo_f ) ; mus_mdi = _WM_initMDI ( ) ; _WM_midi_setup_divisions ( mus_mdi , mus_divisions ) ; _WM_midi_setup_tempo ( mus_mdi , ( uint32_t ) tempo_f ) ; do { _mus_build_event : # if 1 MUS_EVENT_DEBUG ( \"Before\" , mus_data [ mus_data_ofs ] , 0 ) ; if ( ( mus_data [ mus_data_ofs ] & 0x0f ) == 0x0f ) { mus_data [ mus_data_ofs ] = ( mus_data [ mus_data_ofs ] & 0xf0 ) | 0x09 ; } else if ( ( mus_data [ mus_data_ofs ] & 0x0f ) == 0x09 ) { mus_data [ mus_data_ofs ] = ( mus_data [ mus_data_ofs ] & 0xf0 ) | 0x0f ; } MUS_EVENT_DEBUG ( \"After\" , mus_data [ mus_data_ofs ] , 0 ) ; # endif switch ( ( mus_data [ mus_data_ofs ] >> 4 ) & 0x07 ) { case 0 : mus_event_size = 2 ; mus_event [ 0 ] = 0x80 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = mus_data [ mus_data_ofs + 1 ] ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 1 : if ( mus_data [ mus_data_ofs + 1 ] & 0x80 ) { mus_event_size = 3 ; mus_event [ 0 ] = 0x90 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = mus_data [ mus_data_ofs + 1 ] & 0x7f ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; mus_prev_vol [ mus_data [ mus_data_ofs ] & 0x0f ] = mus_event [ 2 ] ; } else { mus_event_size = 2 ; mus_event [ 0 ] = 0x90 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = mus_data [ mus_data_ofs + 1 ] ; mus_event [ 2 ] = mus_prev_vol [ mus_data [ mus_data_ofs ] & 0x0f ] ; mus_event [ 3 ] = 0 ; } break ; case 2 : mus_event_size = 2 ; mus_event [ 0 ] = 0xe0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; pitchbend_tmp = mus_data [ mus_data_ofs + 1 ] << 6 ; mus_event [ 1 ] = pitchbend_tmp & 0x7f ; mus_event [ 2 ] = ( pitchbend_tmp >> 7 ) & 0x7f ; mus_event [ 3 ] = 0 ; break ; case 3 : mus_event_size = 2 ; switch ( mus_data [ mus_data_ofs + 1 ] ) { case 10 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 120 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 11 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 123 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 12 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 126 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 13 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 127 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 14 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 121 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; default : goto _mus_next_data ; } break ; case 4 : mus_event_size = 3 ; switch ( mus_data [ mus_data_ofs + 1 ] ) { case 0 : mus_event [ 0 ] = 0xc0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 1 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 0 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 2 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 1 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 3 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 7 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 4 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 10 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 5 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 11 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 6 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 91 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 7 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 93 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 8 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 64 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 9 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 67 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; default : goto _mus_next_data ; } break ; case 5 : mus_event_size = 1 ; goto _mus_next_data ; break ; case 6 : goto _mus_end_of_song ; break ; case 7 : mus_event_size = 1 ; goto _mus_next_data ; break ; } <S2SV_StartBug> setup_ret = _WM_SetupMidiEvent ( mus_mdi , ( uint8_t * ) mus_event , 0 ) ; <S2SV_EndBug> if ( setup_ret == 0 ) { goto _mus_end ; } _mus_next_data : if ( ! ( mus_data [ mus_data_ofs ] & 0x80 ) ) { mus_data_ofs += mus_event_size ; goto _mus_build_event ; } mus_data_ofs += mus_event_size ; mus_ticks = 0 ; do { mus_ticks = ( mus_ticks << 7 ) | ( mus_data [ mus_data_ofs ++ ] & 0x7f ) ; } while ( mus_data [ mus_data_ofs - 1 ] & 0x80 ) ; sample_count_f = ( ( float ) mus_ticks * samples_per_tick_f ) + sample_remainder ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; mus_mdi -> events [ mus_mdi -> event_count - 1 ] . samples_to_next = sample_count ; mus_mdi -> extra_info . approx_total_samples += sample_count ; } while ( mus_data_ofs < mus_size ) ; _mus_end_of_song : if ( ( mus_mdi -> reverb = _WM_init_reverb ( _WM_SampleRate , _WM_reverb_room_width , _WM_reverb_room_length , _WM_reverb_listen_posx , _WM_reverb_listen_posy ) ) == NULL ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_MEM , \"to<S2SV_blank>init<S2SV_blank>reverb\" , 0 ) ; goto _mus_end ; } _WM_midi_setup_endoftrack ( mus_mdi ) ; mus_mdi -> extra_info . current_sample = 0 ; mus_mdi -> current_event = & mus_mdi -> events [ 0 ] ; mus_mdi -> samples_to_mix = 0 ; mus_mdi -> note = NULL ; _WM_ResetToStart ( mus_mdi ) ; _mus_end : free ( mus_mid_instr ) ; if ( mus_mdi -> reverb ) return ( mus_mdi ) ; _WM_freeMDI ( mus_mdi ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0.0 ; # define MUS_SZ 4 <S2SV_ModStart> uint8_t mus_event [ MUS_SZ <S2SV_ModStart> * ) mus_event , MUS_SZ\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int pfkey_recvmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct pfkey_sock * pfk = pfkey_sk ( sk ) ; struct sk_buff * skb ; int copied , err ; err = - EINVAL ; if ( flags & ~ ( MSG_PEEK | MSG_DONTWAIT | MSG_TRUNC | MSG_CMSG_COMPAT ) ) goto out ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & err ) ; if ( skb == NULL ) goto out ; copied = skb -> len ; if ( copied > len ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( skb ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto out_free ; sock_recv_ts_and_drops ( msg , sk , skb ) ; err = ( flags & MSG_TRUNC ) ? skb -> len : copied ; if ( pfk -> dump . dump != NULL && 3 * atomic_read ( & sk -> sk_rmem_alloc ) <= sk -> sk_rcvbuf ) pfkey_do_dump ( pfk ) ; out_free : skb_free_datagram ( sk , skb ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; <S2SV_ModEnd> skb = skb_recv_datagram\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6906\n\n```\nCWE-125 int main ( ) { <S2SV_StartBug> gdImagePtr im ; <S2SV_EndBug> char * buffer ; size_t size ; size = read_test_file ( & buffer , \"heap_overflow.tga\" ) ; im = gdImageCreateFromTgaPtr ( size , ( void * ) buffer ) ; gdTestAssert ( im == NULL ) ; free ( buffer ) ; return gdNumFailures ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) { check_file ( \"heap_overflow_1.tga\" ) ; check_file ( \"heap_overflow_2.tga\" <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-532(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5549\n\n```\nCWE-532 static int klsi_105_get_line_state ( struct usb_serial_port * port , unsigned long * line_state_p ) { int rc ; u8 * status_buf ; __u16 status ; dev_info ( & port -> serial -> dev -> dev , \"sending<S2SV_blank>SIO<S2SV_blank>Poll<S2SV_blank>request\\\\n\" ) ; status_buf = kmalloc ( KLSI_STATUSBUF_LEN , GFP_KERNEL ) ; if ( ! status_buf ) return - ENOMEM ; status_buf [ 0 ] = 0xff ; status_buf [ 1 ] = 0xff ; rc = usb_control_msg ( port -> serial -> dev , usb_rcvctrlpipe ( port -> serial -> dev , 0 ) , KL5KUSB105A_SIO_POLL , USB_TYPE_VENDOR | USB_DIR_IN , 0 , 0 , status_buf , KLSI_STATUSBUF_LEN , 10000 ) ; <S2SV_StartBug> if ( rc < 0 ) <S2SV_EndBug> <S2SV_StartBug> dev_err ( & port -> dev , \"Reading<S2SV_blank>line<S2SV_blank>status<S2SV_blank>failed<S2SV_blank>(error<S2SV_blank>=<S2SV_blank>%d)\\\\n\" , <S2SV_EndBug> rc ) ; else { status = get_unaligned_le16 ( status_buf ) ; dev_info ( & port -> serial -> dev -> dev , \"read<S2SV_blank>status<S2SV_blank>%x<S2SV_blank>%x\\\\n\" , status_buf [ 0 ] , status_buf [ 1 ] ) ; * line_state_p = klsi_105_status2linestate ( status ) ; } kfree ( status_buf ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( rc != KLSI_STATUSBUF_LEN ) { <S2SV_ModEnd> dev_err ( & <S2SV_ModStart> -> dev , \"reading<S2SV_blank>line<S2SV_blank>status<S2SV_blank>failed:<S2SV_blank>%d\\\\n\" , rc ) ; if ( rc >= 0 ) rc = - EIO ; } <S2SV_ModEnd> else { status\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13010\n\n```\nCWE-125 static int <S2SV_StartBug> l_strnstart ( const char * tstr1 , u_int tl1 , const char * str2 , u_int l2 ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> if ( tl1 > l2 ) return 0 ; return ( strncmp ( tstr1 , str2 , tl1 ) == 0 ? 1 : 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int l_strnstart ( netdissect_options * ndo , <S2SV_ModStart> l2 ) { if ( ! ND_TTEST2 ( * str2 , tl1 ) ) { return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27153\n\n```\nCWE-415 static bool disconnect_cb ( struct io * io , void * user_data ) { struct bt_att_chan * chan = user_data ; struct bt_att * att = chan -> att ; int err ; socklen_t len ; len = sizeof ( err ) ; if ( getsockopt ( chan -> fd , SOL_SOCKET , SO_ERROR , & err , & len ) < 0 ) { util_debug ( chan -> att -> debug_callback , chan -> att -> debug_data , \"(chan<S2SV_blank>%p)<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>obtain<S2SV_blank>disconnect\" \"<S2SV_blank>error:<S2SV_blank>%s\" , chan , strerror ( errno ) ) ; err = 0 ; } util_debug ( chan -> att -> debug_callback , chan -> att -> debug_data , \"Channel<S2SV_blank>%p<S2SV_blank>disconnected:<S2SV_blank>%s\" , chan , strerror ( err ) ) ; queue_remove ( att -> chans , chan ) ; <S2SV_StartBug> queue_remove_all ( att -> req_queue , NULL , NULL , disc_att_send_op ) ; <S2SV_EndBug> queue_remove_all ( att -> ind_queue , NULL , NULL , disc_att_send_op ) ; queue_remove_all ( att -> write_queue , NULL , NULL , disc_att_send_op ) ; if ( chan -> pending_req ) { disc_att_send_op ( chan -> pending_req ) ; chan -> pending_req = NULL ; } if ( chan -> pending_ind ) { disc_att_send_op ( chan -> pending_ind ) ; chan -> pending_ind = NULL ; } bt_att_chan_free ( chan ) ; if ( ! queue_isempty ( att -> chans ) ) return false ; bt_att_ref ( att ) ; <S2SV_StartBug> queue_foreach ( att -> disconn_list , disconn_handler , INT_TO_PTR ( err ) ) ; <S2SV_EndBug> bt_att_unregister_all ( att ) ; bt_att_unref ( att ) ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> chan ) ; <S2SV_ModEnd> if ( chan <S2SV_ModStart> att ) ; att -> in_disc = true ; queue_remove_all ( att -> req_queue , NULL , NULL , disc_att_send_op ) ; queue_remove_all ( att -> ind_queue , NULL , NULL , disc_att_send_op ) ; queue_remove_all ( att -> write_queue , NULL , NULL , disc_att_send_op ) ; att -> in_disc = false ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14164\n\n```\nCWE-119 static OPJ_BOOL opj_j2k_write_sot ( opj_j2k_t * p_j2k , OPJ_BYTE * p_data , <S2SV_StartBug> OPJ_UINT32 * p_data_written , <S2SV_EndBug> const opj_stream_private_t * p_stream , opj_event_mgr_t * p_manager ) { assert ( p_j2k != 00 ) ; assert ( p_manager != 00 ) ; assert ( p_stream != 00 ) ; OPJ_UNUSED ( p_stream ) ; OPJ_UNUSED ( p_manager ) ; <S2SV_StartBug> opj_write_bytes ( p_data , J2K_MS_SOT , <S2SV_EndBug> 2 ) ; p_data += 2 ; opj_write_bytes ( p_data , 10 , 2 ) ; p_data += 2 ; opj_write_bytes ( p_data , p_j2k -> m_current_tile_number , 2 ) ; p_data += 2 ; p_data += 4 ; opj_write_bytes ( p_data , p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number , 1 ) ; ++ p_data ; opj_write_bytes ( p_data , p_j2k -> m_cp . tcps [ p_j2k -> m_current_tile_number ] . m_nb_tile_parts , 1 ) ; ++ p_data ; # ifdef USE_JPWL assert ( 0 && \"TODO\" ) ; # endif * p_data_written = 12 ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p_data , OPJ_UINT32 p_total_data_size , OPJ_UINT32 <S2SV_ModStart> p_manager ) ; if ( p_total_data_size < 12 ) { opj_event_msg ( p_manager , EVT_ERROR , \"Not<S2SV_blank>enough<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>output<S2SV_blank>buffer<S2SV_blank>to<S2SV_blank>write<S2SV_blank>SOT<S2SV_blank>marker\\\\n\" ) ; return OPJ_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int read_skip ( VP9_COMMON * cm , const MACROBLOCKD * xd , <S2SV_StartBug> int segment_id , vp9_reader * r ) { <S2SV_EndBug> <S2SV_StartBug> if ( vp9_segfeature_active ( & cm -> seg , segment_id , SEG_LVL_SKIP ) ) { <S2SV_EndBug> return 1 ; } else { const int ctx = vp9_get_skip_context ( xd ) ; <S2SV_StartBug> const int skip = vp9_read ( r , cm -> fc . skip_probs [ ctx ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! cm -> frame_parallel_decoding_mode ) <S2SV_EndBug> ++ cm -> counts . skip [ ctx ] [ skip ] ; return skip ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int segment_id , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> { if ( segfeature_active <S2SV_ModEnd> ( & cm <S2SV_ModStart> int skip = vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> skip_probs [ ctx <S2SV_ModStart> ] ) ; FRAME_COUNTS * counts = xd -> counts ; if ( counts ) ++ counts -> <S2SV_ModEnd> skip [ ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1583\n\n```\nCWE-399 static int xfrm6_tunnel_rcv ( struct sk_buff * skb ) { struct ipv6hdr * iph = ipv6_hdr ( skb ) ; __be32 spi ; spi = xfrm6_tunnel_spi_lookup ( ( xfrm_address_t * ) & iph -> saddr ) ; <S2SV_StartBug> return xfrm6_rcv_spi ( skb , spi ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , spi ) > 0 ? : 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14039\n\n```\nCWE-787 static OPJ_BOOL opj_j2k_write_sot ( opj_j2k_t * p_j2k , OPJ_BYTE * p_data , OPJ_UINT32 p_total_data_size , OPJ_UINT32 * p_data_written , const opj_stream_private_t * p_stream , opj_event_mgr_t * p_manager ) { assert ( p_j2k != 00 ) ; assert ( p_manager != 00 ) ; assert ( p_stream != 00 ) ; OPJ_UNUSED ( p_stream ) ; <S2SV_StartBug> OPJ_UNUSED ( p_manager ) ; <S2SV_EndBug> if ( p_total_data_size < 12 ) { opj_event_msg ( p_manager , EVT_ERROR , \"Not<S2SV_blank>enough<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>output<S2SV_blank>buffer<S2SV_blank>to<S2SV_blank>write<S2SV_blank>SOT<S2SV_blank>marker\\\\n\" ) ; return OPJ_FALSE ; } opj_write_bytes ( p_data , J2K_MS_SOT , 2 ) ; p_data += 2 ; opj_write_bytes ( p_data , 10 , 2 ) ; p_data += 2 ; opj_write_bytes ( p_data , p_j2k -> m_current_tile_number , 2 ) ; p_data += 2 ; p_data += 4 ; opj_write_bytes ( p_data , p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number , 1 ) ; ++ p_data ; opj_write_bytes ( p_data , p_j2k -> m_cp . tcps [ p_j2k -> m_current_tile_number ] . m_nb_tile_parts , 1 ) ; ++ p_data ; # ifdef USE_JPWL assert ( 0 && \"TODO\" ) ; # endif * p_data_written = 12 ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p_stream ) ; <S2SV_ModEnd> if ( p_total_data_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20406\n\n```\nCWE-190 static PyMemoEntry * _PyMemoTable_Lookup ( PyMemoTable * self , PyObject * key ) { size_t i ; size_t perturb ; <S2SV_StartBug> size_t mask = ( size_t ) self -> mt_mask ; <S2SV_EndBug> PyMemoEntry * table = self -> mt_table ; PyMemoEntry * entry ; Py_hash_t hash = ( Py_hash_t ) key >> 3 ; i = hash & mask ; entry = & table [ i ] ; if ( entry -> me_key == NULL || entry -> me_key == key ) return entry ; for ( perturb = hash ; ; perturb >>= PERTURB_SHIFT ) { i = ( i << 2 ) + i + perturb + 1 ; entry = & table [ i & mask ] ; if ( entry -> me_key == NULL || entry -> me_key == key ) return entry ; } Py_UNREACHABLE ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t mask = <S2SV_ModEnd> self -> mt_mask\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12998\n\n```\nCWE-125 static int isis_print_extd_ip_reach ( netdissect_options * ndo , const uint8_t * tptr , const char * ident , uint16_t afi ) { char ident_buffer [ 20 ] ; uint8_t prefix [ sizeof ( struct in6_addr ) ] ; u_int metric , status_byte , bit_length , byte_length , sublen , processed , subtlvtype , subtlvlen ; if ( ! ND_TTEST2 ( * tptr , 4 ) ) return ( 0 ) ; metric = EXTRACT_32BITS ( tptr ) ; processed = 4 ; tptr += 4 ; if ( afi == AF_INET ) { if ( ! ND_TTEST2 ( * tptr , 1 ) ) return ( 0 ) ; status_byte = * ( tptr ++ ) ; bit_length = status_byte & 0x3f ; if ( bit_length > 32 ) { ND_PRINT ( ( ndo , \"%sIPv4<S2SV_blank>prefix:<S2SV_blank>bad<S2SV_blank>bit<S2SV_blank>length<S2SV_blank>%u\" , ident , bit_length ) ) ; return ( 0 ) ; } processed ++ ; } else if ( afi == AF_INET6 ) { <S2SV_StartBug> if ( ! ND_TTEST2 ( * tptr , 1 ) ) <S2SV_EndBug> return ( 0 ) ; status_byte = * ( tptr ++ ) ; bit_length = * ( tptr ++ ) ; if ( bit_length > 128 ) { ND_PRINT ( ( ndo , \"%sIPv6<S2SV_blank>prefix:<S2SV_blank>bad<S2SV_blank>bit<S2SV_blank>length<S2SV_blank>%u\" , ident , bit_length ) ) ; return ( 0 ) ; } processed += 2 ; } else return ( 0 ) ; byte_length = ( bit_length + 7 ) / 8 ; if ( ! ND_TTEST2 ( * tptr , byte_length ) ) return ( 0 ) ; memset ( prefix , 0 , sizeof prefix ) ; memcpy ( prefix , tptr , byte_length ) ; tptr += byte_length ; processed += byte_length ; if ( afi == AF_INET ) ND_PRINT ( ( ndo , \"%sIPv4<S2SV_blank>prefix:<S2SV_blank>%15s/%u\" , ident , ipaddr_string ( ndo , prefix ) , bit_length ) ) ; else if ( afi == AF_INET6 ) ND_PRINT ( ( ndo , \"%sIPv6<S2SV_blank>prefix:<S2SV_blank>%s/%u\" , ident , ip6addr_string ( ndo , prefix ) , bit_length ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Distribution:<S2SV_blank>%s,<S2SV_blank>Metric:<S2SV_blank>%u\" , ISIS_MASK_TLV_EXTD_IP_UPDOWN ( status_byte ) ? \"down\" : \"up\" , metric ) ) ; if ( afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV ( status_byte ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>sub-TLVs<S2SV_blank>present\" ) ) ; else if ( afi == AF_INET6 ) ND_PRINT ( ( ndo , \",<S2SV_blank>%s%s\" , ISIS_MASK_TLV_EXTD_IP6_IE ( status_byte ) ? \"External\" : \"Internal\" , ISIS_MASK_TLV_EXTD_IP6_SUBTLV ( status_byte ) ? \",<S2SV_blank>sub-TLVs<S2SV_blank>present\" : \"\" ) ) ; if ( ( afi == AF_INET && ISIS_MASK_TLV_EXTD_IP_SUBTLV ( status_byte ) ) || ( afi == AF_INET6 && ISIS_MASK_TLV_EXTD_IP6_SUBTLV ( status_byte ) ) ) { if ( ! ND_TTEST2 ( * tptr , 1 ) ) return ( 0 ) ; sublen = * ( tptr ++ ) ; processed += sublen + 1 ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%u)\" , sublen ) ) ; while ( sublen > 0 ) { if ( ! ND_TTEST2 ( * tptr , 2 ) ) return ( 0 ) ; subtlvtype = * ( tptr ++ ) ; subtlvlen = * ( tptr ++ ) ; snprintf ( ident_buffer , sizeof ( ident_buffer ) , \"%s<S2SV_blank><S2SV_blank>\" , ident ) ; if ( ! isis_print_ip_reach_subtlv ( ndo , tptr , subtlvtype , subtlvlen , ident_buffer ) ) return ( 0 ) ; tptr += subtlvlen ; sublen -= ( subtlvlen + 2 ) ; } } return ( processed ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tptr , 2 <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10150\n\n```\nCWE-416 static int kvm_ioctl_create_device ( struct kvm * kvm , struct kvm_create_device * cd ) { struct kvm_device_ops * ops = NULL ; struct kvm_device * dev ; bool test = cd -> flags & KVM_CREATE_DEVICE_TEST ; int ret ; if ( cd -> type >= ARRAY_SIZE ( kvm_device_ops_table ) ) return - ENODEV ; ops = kvm_device_ops_table [ cd -> type ] ; if ( ops == NULL ) return - ENODEV ; if ( test ) return 0 ; dev = kzalloc ( sizeof ( * dev ) , GFP_KERNEL ) ; if ( ! dev ) return - ENOMEM ; dev -> ops = ops ; dev -> kvm = kvm ; mutex_lock ( & kvm -> lock ) ; ret = ops -> create ( dev , cd -> type ) ; if ( ret < 0 ) { mutex_unlock ( & kvm -> lock ) ; kfree ( dev ) ; return ret ; } list_add ( & dev -> vm_node , & kvm -> devices ) ; mutex_unlock ( & kvm -> lock ) ; if ( ops -> init ) ops -> init ( dev ) ; ret = anon_inode_getfd ( ops -> name , & kvm_device_fops , dev , O_RDWR | O_CLOEXEC ) ; if ( ret < 0 ) { <S2SV_StartBug> ops -> destroy ( dev ) ; <S2SV_EndBug> mutex_lock ( & kvm -> lock ) ; list_del ( & dev -> vm_node ) ; mutex_unlock ( & kvm -> lock ) ; return ret ; } kvm_get_kvm ( kvm ) ; cd -> fd = ret ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { mutex_lock ( & kvm -> lock ) ; list_del ( & dev -> vm_node ) ; mutex_unlock ( & kvm -> lock ) ; <S2SV_ModStart> destroy ( dev <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 void rdp_in_unistr ( STREAM s , int in_len , char * * string , uint32 * str_size ) { static iconv_t icv_utf16_to_local ; size_t ibl , obl ; <S2SV_StartBug> char * pin , * pout ; <S2SV_EndBug> if ( ! icv_utf16_to_local ) { icv_utf16_to_local = iconv_open ( g_codepage , WINDOWS_CODEPAGE ) ; if ( icv_utf16_to_local == ( iconv_t ) - 1 ) { logger ( Protocol , Error , \"rdp_in_unistr(),<S2SV_blank>iconv_open[%s<S2SV_blank>-><S2SV_blank>%s]<S2SV_blank>fail<S2SV_blank>%p\" , WINDOWS_CODEPAGE , g_codepage , icv_utf16_to_local ) ; abort ( ) ; } } if ( * string == NULL ) { * string = xmalloc ( in_len * 2 ) ; * str_size = in_len * 2 ; } ibl = in_len ; obl = * str_size - 1 ; pin = ( char * ) s -> p ; pout = * string ; if ( iconv ( icv_utf16_to_local , ( char * * ) & pin , & ibl , & pout , & obl ) == ( size_t ) - 1 ) { if ( errno == E2BIG ) { logger ( Protocol , Warning , \"rdp_in_unistr(),<S2SV_blank>server<S2SV_blank>sent<S2SV_blank>an<S2SV_blank>unexpectedly<S2SV_blank>long<S2SV_blank>string,<S2SV_blank>truncating\" ) ; } else { logger ( Protocol , Warning , \"rdp_in_unistr(),<S2SV_blank>iconv<S2SV_blank>fail,<S2SV_blank>errno<S2SV_blank>%d\" , errno ) ; free ( * string ) ; * string = NULL ; * str_size = 0 ; } abort ( ) ; } s -> p += in_len ; * pout = 0 ; if ( * string ) * str_size = pout - * string ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * pout ; struct stream packet = * s ; if ( ( in_len < 0 ) || ( ( uint32 ) in_len >= ( RD_UINT32_MAX / 2 ) ) ) { logger ( Protocol , Error , \"rdp_in_unistr(),<S2SV_blank>length<S2SV_blank>of<S2SV_blank>unicode<S2SV_blank>data<S2SV_blank>is<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" ) ; abort ( ) ; } if ( ! s_check_rem ( s , in_len ) ) { rdp_protocol_error ( \"rdp_in_unistr(),<S2SV_blank>consume<S2SV_blank>of<S2SV_blank>unicode<S2SV_blank>data<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6892\n\n```\nCWE-119 static int aiff_read_chanmap ( SF_PRIVATE * psf , unsigned dword ) { const AIFF_CAF_CHANNEL_MAP * map_info ; unsigned channel_bitmap , channel_decriptions , bytesread ; int layout_tag ; bytesread = psf_binheader_readf ( psf , \"444\" , & layout_tag , & channel_bitmap , & channel_decriptions ) ; if ( ( map_info = aiff_caf_of_channel_layout_tag ( layout_tag ) ) == NULL ) return 0 ; psf_log_printf ( psf , \"<S2SV_blank><S2SV_blank>Tag<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:<S2SV_blank>%x\\\\n\" , layout_tag ) ; if ( map_info ) psf_log_printf ( psf , \"<S2SV_blank><S2SV_blank>Layout<S2SV_blank>:<S2SV_blank>%s\\\\n\" , map_info -> name ) ; if ( bytesread < dword ) psf_binheader_readf ( psf , \"j\" , dword - bytesread ) ; if ( map_info -> channel_map != NULL ) <S2SV_StartBug> { size_t chanmap_size = psf -> sf . channels * sizeof ( psf -> channel_map [ 0 ] ) ; <S2SV_EndBug> free ( psf -> channel_map ) ; if ( ( psf -> channel_map = malloc ( chanmap_size ) ) == NULL ) return SFE_MALLOC_FAILED ; memcpy ( psf -> channel_map , map_info -> channel_map , chanmap_size ) ; } ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t chanmap_size = SF_MIN ( <S2SV_ModStart> sf . channels , layout_tag & 0xffff )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void fadst16_sse2 ( __m128i * in0 , __m128i * in1 ) { <S2SV_EndBug> fadst16_8col ( in0 ) ; fadst16_8col ( in1 ) ; array_transpose_16x16 ( in0 , in1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010283\n\n```\nCWE-200 int data_on_connection ( int fd , callback_remove_handler remove ) { int nread ; char * network_packet ; char network_line [ 8192 ] ; char * p ; unsigned long id ; char string [ 1024 ] ; unsigned long msg_id = UINT32_MAX ; enum network_protocol version = network_client_get_version ( fd ) ; ioctl ( fd , FIONREAD , & nread ) ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"new<S2SV_blank>connection<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%d\\\\n\" , nread ) ; if ( nread == 0 ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_PROCESS , \"%d<S2SV_blank>failed,<S2SV_blank>got<S2SV_blank>0<S2SV_blank>close<S2SV_blank>connection<S2SV_blank>to<S2SV_blank>listener<S2SV_blank>\" , fd ) ; close ( fd ) ; FD_CLR ( fd , & readfds ) ; remove ( fd ) ; network_client_dump ( ) ; return 0 ; } if ( nread >= 8192 ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ERROR , \"%d<S2SV_blank>failed,<S2SV_blank>more<S2SV_blank>than<S2SV_blank>8192<S2SV_blank>close<S2SV_blank>connection<S2SV_blank>to<S2SV_blank>listener<S2SV_blank>\" , fd ) ; close ( fd ) ; FD_CLR ( fd , & readfds ) ; remove ( fd ) ; return 0 ; } network_packet = malloc ( ( nread + 1 ) * sizeof ( char ) ) ; read ( fd , network_packet , nread ) ; network_packet [ nread ] = '\\\\0' ; memset ( network_line , 0 , 8192 ) ; p = network_packet ; p_sem ( sem_id ) ; while ( get_network_line ( p , network_line ) ) { if ( strlen ( network_line ) > 0 ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"line<S2SV_blank>=<S2SV_blank>[%s]\" , network_line ) ; } if ( ! strncmp ( network_line , \"MSGID:<S2SV_blank>\" , strlen ( \"MSGID:<S2SV_blank>\" ) ) ) { msg_id = strtoul ( & ( network_line [ strlen ( \"MSGID:<S2SV_blank>\" ) ] ) , NULL , 10 ) ; p += strlen ( network_line ) ; } else if ( ! strncmp ( network_line , \"Version:<S2SV_blank>\" , strlen ( \"Version:<S2SV_blank>\" ) ) ) { char * head = network_line , * end ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"RECV:<S2SV_blank>VERSION\" ) ; version = strtoul ( head + 9 , & end , 10 ) ; if ( ! head [ 9 ] || * end ) goto failed ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"VERSION=%d\" , version ) ; if ( version < network_procotol_version ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_PROCESS , \"Forbidden<S2SV_blank>VERSION=%d<S2SV_blank><<S2SV_blank>%d,<S2SV_blank>close<S2SV_blank>connection<S2SV_blank>to<S2SV_blank>listener\" , version , network_procotol_version ) ; goto close ; } else if ( version >= PROTOCOL_LAST ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_PROCESS , \"Future<S2SV_blank>VERSION=%d\" , version ) ; version = PROTOCOL_LAST - 1 ; } network_client_set_version ( fd , version ) ; msg_id = UINT32_MAX ; p += strlen ( network_line ) ; } else if ( ! strncmp ( network_line , \"Capabilities:<S2SV_blank>\" , strlen ( \"Capabilities:<S2SV_blank>\" ) ) ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"RECV:<S2SV_blank>Capabilities\" ) ; if ( version > PROTOCOL_UNKNOWN ) { memset ( string , 0 , sizeof ( string ) ) ; snprintf ( string , sizeof ( string ) , \"Version:<S2SV_blank>%d\\\\nCapabilities:<S2SV_blank>\\\\n\\\\n\" , version ) ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"SEND:<S2SV_blank>%s\" , string ) ; write ( fd , string , strlen ( string ) ) ; } else { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"Capabilities<S2SV_blank>recv,<S2SV_blank>but<S2SV_blank>no<S2SV_blank>version<S2SV_blank>line\" ) ; } p += strlen ( network_line ) ; <S2SV_StartBug> } else if ( ! strncmp ( network_line , \"GET_DN<S2SV_blank>\" , strlen ( \"GET_DN<S2SV_blank>\" ) ) && msg_id != UINT32_MAX && network_client_get_version ( fd ) > 0 ) { <S2SV_EndBug> univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"RECV:<S2SV_blank>GET_DN\" ) ; id = strtoul ( & ( network_line [ strlen ( \"GET_DN<S2SV_blank>\" ) ] ) , NULL , 10 ) ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"id:<S2SV_blank>%ld\" , id ) ; if ( id <= notify_last_id . id ) { char * dn_string = NULL ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"try<S2SV_blank>to<S2SV_blank>read<S2SV_blank>%ld<S2SV_blank>from<S2SV_blank>cache\" , id ) ; if ( ( dn_string = notifier_cache_get ( id ) ) == NULL ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"%ld<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>cache\" , id ) ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"%ld<S2SV_blank>get<S2SV_blank>one<S2SV_blank>dn\" , id ) ; if ( ( dn_string = notify_transcation_get_one_dn ( id ) ) == NULL ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"%ld<S2SV_blank>failed<S2SV_blank>\" , id ) ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ERROR , \"%d<S2SV_blank>failed,<S2SV_blank>close<S2SV_blank>connection<S2SV_blank>to<S2SV_blank>listener<S2SV_blank>\" , fd ) ; close ( fd ) ; FD_CLR ( fd , & readfds ) ; remove ( fd ) ; return 0 ; } } if ( dn_string != NULL ) { snprintf ( string , sizeof ( string ) , \"MSGID:<S2SV_blank>%ld\\\\n%s\\\\n\\\\n\" , msg_id , dn_string ) ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"--><S2SV_blank>%d:<S2SV_blank>[%s]\" , fd , string ) ; write ( fd , string , strlen ( string ) ) ; free ( dn_string ) ; } } else { network_client_set_next_id ( fd , id ) ; network_client_set_msg_id ( fd , msg_id ) ; } p += strlen ( network_line ) + 1 ; msg_id = UINT32_MAX ; } else if ( ! strncmp ( p , \"WAIT_ID<S2SV_blank>\" , 8 ) && msg_id != UINT32_MAX && version >= PROTOCOL_3 ) { char * head = network_line , * end ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"RECV:<S2SV_blank>WAIT_ID\" ) ; id = strtoul ( head + 8 , & end , 10 ) ; if ( ! head [ 8 ] || * end ) goto failed ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"id:<S2SV_blank>%ld\" , id ) ; if ( id <= notify_last_id . id ) { snprintf ( string , sizeof ( string ) , \"MSGID:<S2SV_blank>%ld\\\\n%ld\\\\n\\\\n\" , msg_id , notify_last_id . id ) ; write ( fd , string , strlen ( string ) ) ; } else { network_client_set_next_id ( fd , id ) ; network_client_set_msg_id ( fd , msg_id ) ; } p += strlen ( network_line ) + 1 ; msg_id = UINT32_MAX ; } else if ( ! strncmp ( network_line , \"GET_ID\" , strlen ( \"GET_ID\" ) ) && msg_id != UINT32_MAX && network_client_get_version ( fd ) > 0 ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"RECV:<S2SV_blank>GET_ID\" ) ; memset ( string , 0 , sizeof ( string ) ) ; snprintf ( string , sizeof ( string ) , \"MSGID:<S2SV_blank>%ld\\\\n%ld\\\\n\\\\n\" , msg_id , notify_last_id . id ) ; write ( fd , string , strlen ( string ) ) ; p += strlen ( network_line ) + 1 ; msg_id = UINT32_MAX ; } else if ( ! strncmp ( network_line , \"GET_SCHEMA_ID\" , strlen ( \"GET_SCHEMA_ID\" ) ) && msg_id != UINT32_MAX && network_client_get_version ( fd ) > 0 ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"RECV:<S2SV_blank>GET_SCHEMA_ID\" ) ; memset ( string , 0 , sizeof ( string ) ) ; snprintf ( string , sizeof ( string ) , \"MSGID:<S2SV_blank>%ld\\\\n%ld\\\\n\\\\n\" , msg_id , SCHEMA_ID ) ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"--><S2SV_blank>%d:<S2SV_blank>[%s]\" , fd , string ) ; write ( fd , string , strlen ( string ) ) ; p += strlen ( network_line ) + 1 ; msg_id = UINT32_MAX ; } else if ( ! strncmp ( network_line , \"ALIVE\" , strlen ( \"ALIVE\" ) ) && msg_id != UINT32_MAX && network_client_get_version ( fd ) > 0 ) { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"RECV:<S2SV_blank>ALIVE\" ) ; snprintf ( string , sizeof ( string ) , \"MSGID:<S2SV_blank>%ld\\\\nOKAY\\\\n\\\\n\" , msg_id ) ; write ( fd , string , strlen ( string ) ) ; p += strlen ( network_line ) + 1 ; msg_id = UINT32_MAX ; } else { p += strlen ( network_line ) ; if ( strlen ( network_line ) == 0 ) { p += 1 ; } else { univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ERROR , \"Drop<S2SV_blank>package<S2SV_blank>[%s]\" , network_line ) ; } } } v_sem ( sem_id ) ; univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_ALL , \"END<S2SV_blank>Package\" ) ; network_client_dump ( ) ; return 0 ; failed : univention_debug ( UV_DEBUG_TRANSFILE , UV_DEBUG_PROCESS , \"Failed<S2SV_blank>parsing<S2SV_blank>[%s]\" , p ) ; close : close ( fd ) ; FD_CLR ( fd , & readfds ) ; remove ( fd ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != UINT32_MAX && version > PROTOCOL_UNKNOWN && version < PROTOCOL_3 <S2SV_ModEnd> ) { univention_debug\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_image_t * encoder_get_preview ( vpx_codec_alg_priv_t * ctx ) { YV12_BUFFER_CONFIG sd ; <S2SV_StartBug> vp9_ppflags_t flags = { 0 } ; <S2SV_EndBug> if ( ctx -> preview_ppcfg . post_proc_flag ) { flags . post_proc_flag = ctx -> preview_ppcfg . post_proc_flag ; flags . deblocking_level = ctx -> preview_ppcfg . deblocking_level ; flags . noise_level = ctx -> preview_ppcfg . noise_level ; } if ( vp9_get_preview_raw_frame ( ctx -> cpi , & sd , & flags ) == 0 ) { yuvconfig2image ( & ctx -> preview_img , & sd , NULL ) ; return & ctx -> preview_img ; } else { return NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; vp9_ppflags_t flags ; vp9_zero ( flags ) <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8575\n\n```\nCWE-200 static int sco_sock_bind ( struct socket * sock , struct sockaddr * addr , int addr_len ) { struct sockaddr_sco * sa = ( struct sockaddr_sco * ) addr ; struct sock * sk = sock -> sk ; int err = 0 ; BT_DBG ( \"sk<S2SV_blank>%p<S2SV_blank>%pMR\" , sk , & sa -> sco_bdaddr ) ; <S2SV_StartBug> if ( ! addr || addr -> sa_family != AF_BLUETOOTH ) <S2SV_EndBug> return - EINVAL ; lock_sock ( sk ) ; if ( sk -> sk_state != BT_OPEN ) { err = - EBADFD ; goto done ; } if ( sk -> sk_type != SOCK_SEQPACKET ) { err = - EINVAL ; goto done ; } bacpy ( & sco_pi ( sk ) -> src , & sa -> sco_bdaddr ) ; sk -> sk_state = BT_BOUND ; done : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sa_family != AF_BLUETOOTH ) return - EINVAL ; if ( addr_len < sizeof ( struct sockaddr_sco )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0028\n\n```\nCWE-264 NORET_TYPE void do_exit ( long code ) { struct task_struct * tsk = current ; int group_dead ; profile_task_exit ( tsk ) ; WARN_ON ( atomic_read ( & tsk -> fs_excl ) ) ; if ( unlikely ( in_interrupt ( ) ) ) panic ( \"Aiee,<S2SV_blank>killing<S2SV_blank>interrupt<S2SV_blank>handler!\" ) ; if ( unlikely ( ! tsk -> pid ) ) panic ( \"Attempted<S2SV_blank>to<S2SV_blank>kill<S2SV_blank>the<S2SV_blank>idle<S2SV_blank>task!\" ) ; tracehook_report_exit ( & code ) ; if ( unlikely ( tsk -> flags & PF_EXITING ) ) { printk ( KERN_ALERT \"Fixing<S2SV_blank>recursive<S2SV_blank>fault<S2SV_blank>but<S2SV_blank>reboot<S2SV_blank>is<S2SV_blank>needed!\\\\n\" ) ; tsk -> flags |= PF_EXITPIDONE ; if ( tsk -> io_context ) exit_io_context ( ) ; set_current_state ( TASK_UNINTERRUPTIBLE ) ; schedule ( ) ; } exit_signals ( tsk ) ; smp_mb ( ) ; spin_unlock_wait ( & tsk -> pi_lock ) ; if ( unlikely ( in_atomic ( ) ) ) printk ( KERN_INFO \"note:<S2SV_blank>%s[%d]<S2SV_blank>exited<S2SV_blank>with<S2SV_blank>preempt_count<S2SV_blank>%d\\\\n\" , current -> comm , task_pid_nr ( current ) , preempt_count ( ) ) ; acct_update_integrals ( tsk ) ; if ( tsk -> mm ) { update_hiwater_rss ( tsk -> mm ) ; update_hiwater_vm ( tsk -> mm ) ; } group_dead = atomic_dec_and_test ( & tsk -> signal -> live ) ; if ( group_dead ) { hrtimer_cancel ( & tsk -> signal -> real_timer ) ; exit_itimers ( tsk -> signal ) ; } acct_collect ( code , group_dead ) ; <S2SV_StartBug> # ifdef CONFIG_FUTEX <S2SV_EndBug> <S2SV_StartBug> if ( unlikely ( tsk -> robust_list ) ) <S2SV_EndBug> exit_robust_list ( tsk ) ; # ifdef CONFIG_COMPAT if ( unlikely ( tsk -> compat_robust_list ) ) compat_exit_robust_list ( tsk ) ; # endif # endif if ( group_dead ) tty_audit_exit ( ) ; if ( unlikely ( tsk -> audit_context ) ) audit_free ( tsk ) ; tsk -> exit_code = code ; taskstats_exit ( tsk , group_dead ) ; exit_mm ( tsk ) ; if ( group_dead ) acct_process ( ) ; trace_sched_process_exit ( tsk ) ; exit_sem ( tsk ) ; exit_files ( tsk ) ; exit_fs ( tsk ) ; check_stack_usage ( ) ; exit_thread ( ) ; cgroup_exit ( tsk , 1 ) ; exit_keys ( tsk ) ; if ( group_dead && tsk -> signal -> leader ) disassociate_ctty ( 1 ) ; module_put ( task_thread_info ( tsk ) -> exec_domain -> module ) ; if ( tsk -> binfmt ) module_put ( tsk -> binfmt -> module ) ; proc_exit_connector ( tsk ) ; exit_notify ( tsk , group_dead ) ; # ifdef CONFIG_NUMA mpol_put ( tsk -> mempolicy ) ; tsk -> mempolicy = NULL ; # endif # ifdef CONFIG_FUTEX if ( unlikely ( ! list_empty ( & tsk -> pi_state_list ) ) ) exit_pi_state_list ( tsk ) ; if ( unlikely ( current -> pi_state_cache ) ) kfree ( current -> pi_state_cache ) ; # endif debug_check_no_locks_held ( tsk ) ; tsk -> flags |= PF_EXITPIDONE ; if ( tsk -> io_context ) exit_io_context ( ) ; if ( tsk -> splice_pipe ) __free_pipe_info ( tsk -> splice_pipe ) ; preempt_disable ( ) ; tsk -> state = TASK_DEAD ; schedule ( ) ; BUG ( ) ; for ( ; ; ) cpu_relax ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> group_dead ) ; if ( group_dead ) tty_audit_exit ( ) ; if ( unlikely ( tsk -> audit_context ) ) audit_free ( tsk ) ; tsk -> exit_code = code ; taskstats_exit ( tsk , group_dead ) ; exit_mm ( tsk ) ; if ( group_dead ) acct_process ( ) ; trace_sched_process_exit ( tsk ) ; exit_sem ( tsk ) ; exit_files ( tsk ) ; exit_fs ( tsk ) ; check_stack_usage ( ) ; exit_thread ( ) ; cgroup_exit ( tsk , 1 ) ; exit_keys ( tsk ) ; if ( group_dead && tsk -> signal -> leader ) disassociate_ctty ( 1 ) ; module_put ( task_thread_info ( tsk ) -> exec_domain -> module ) ; if ( tsk -> binfmt ) module_put ( tsk -> binfmt -> module ) ; proc_exit_connector ( tsk ) ; exit_notify ( tsk , group_dead ) ; # ifdef CONFIG_NUMA mpol_put ( tsk -> mempolicy ) ; tsk -> mempolicy = NULL ; # endif <S2SV_ModStart> ( unlikely ( <S2SV_ModEnd> ! list_empty (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 static void cliprdr_process ( STREAM s ) { uint16 type , status ; uint32 length , format ; uint8 * data ; <S2SV_StartBug> in_uint16_le ( s , type ) ; <S2SV_EndBug> in_uint16_le ( s , status ) ; in_uint32_le ( s , length ) ; data = s -> p ; logger ( Clipboard , Debug , \"cliprdr_process(),<S2SV_blank>type=%d,<S2SV_blank>status=%d,<S2SV_blank>length=%d\" , type , status , length ) ; <S2SV_StartBug> if ( status == CLIPRDR_ERROR ) <S2SV_EndBug> { switch ( type ) { case CLIPRDR_FORMAT_ACK : cliprdr_send_native_format_announce ( last_formats , last_formats_length ) ; break ; case CLIPRDR_DATA_RESPONSE : ui_clip_request_failed ( ) ; break ; default : logger ( Clipboard , Warning , \"cliprdr_process(),<S2SV_blank>unhandled<S2SV_blank>error<S2SV_blank>(type=%d)\" , type ) ; } return ; } switch ( type ) { case CLIPRDR_CONNECT : ui_clip_sync ( ) ; break ; case CLIPRDR_FORMAT_ANNOUNCE : ui_clip_format_announce ( data , length ) ; cliprdr_send_packet ( CLIPRDR_FORMAT_ACK , CLIPRDR_RESPONSE , NULL , 0 ) ; return ; case CLIPRDR_FORMAT_ACK : break ; case CLIPRDR_DATA_REQUEST : in_uint32_le ( s , format ) ; ui_clip_request_data ( format ) ; break ; case CLIPRDR_DATA_RESPONSE : ui_clip_handle_data ( data , length ) ; break ; case 7 : break ; default : logger ( Clipboard , Warning , \"cliprdr_process(),<S2SV_blank>unhandled<S2SV_blank>packet<S2SV_blank>type<S2SV_blank>%d\" , type ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * data ; struct stream packet = * s ; <S2SV_ModStart> ; if ( ! s_check_rem ( s , length ) ) { rdp_protocol_error ( \"cliprdr_process(),<S2SV_blank>consume<S2SV_blank>of<S2SV_blank>packet<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4129\n\n```\nCWE-20 static void br_multicast_del_pg ( struct net_bridge * br , struct net_bridge_port_group * pg ) { struct net_bridge_mdb_htable * mdb ; struct net_bridge_mdb_entry * mp ; struct net_bridge_port_group * p ; struct net_bridge_port_group __rcu * * pp ; mdb = mlock_dereference ( br -> mdb , br ) ; mp = br_mdb_ip_get ( mdb , & pg -> addr ) ; if ( WARN_ON ( ! mp ) ) return ; for ( pp = & mp -> ports ; ( p = mlock_dereference ( * pp , br ) ) != NULL ; pp = & p -> next ) { if ( p != pg ) continue ; rcu_assign_pointer ( * pp , p -> next ) ; hlist_del_init ( & p -> mglist ) ; del_timer ( & p -> timer ) ; call_rcu_bh ( & p -> rcu , br_multicast_free_pg ) ; <S2SV_StartBug> if ( ! mp -> ports && ! mp -> mglist && <S2SV_EndBug> netif_running ( br -> dev ) ) mod_timer ( & mp -> timer , jiffies ) ; return ; } WARN_ON ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mglist && mp -> timer_armed &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11368\n\n```\nCWE-617 krb5_error_code process_tgs_req ( struct server_handle * handle , krb5_data * pkt , const krb5_fulladdr * from , krb5_data * * response ) { krb5_keyblock * subkey = 0 ; krb5_keyblock * header_key = NULL ; krb5_kdc_req * request = 0 ; krb5_db_entry * server = NULL ; krb5_db_entry * stkt_server = NULL ; krb5_kdc_rep reply ; krb5_enc_kdc_rep_part reply_encpart ; krb5_ticket ticket_reply , * header_ticket = 0 ; int st_idx = 0 ; krb5_enc_tkt_part enc_tkt_reply ; int newtransited = 0 ; krb5_error_code retval = 0 ; krb5_keyblock encrypting_key ; krb5_timestamp kdc_time , authtime = 0 ; krb5_keyblock session_key ; krb5_keyblock * reply_key = NULL ; krb5_key_data * server_key ; krb5_principal cprinc = NULL , sprinc = NULL , altcprinc = NULL ; krb5_last_req_entry * nolrarray [ 2 ] , nolrentry ; int errcode ; const char * status = 0 ; krb5_enc_tkt_part * header_enc_tkt = NULL ; krb5_enc_tkt_part * subject_tkt = NULL ; krb5_db_entry * client = NULL , * header_server = NULL ; krb5_db_entry * local_tgt , * local_tgt_storage = NULL ; krb5_pa_s4u_x509_user * s4u_x509_user = NULL ; krb5_authdata * * kdc_issued_auth_data = NULL ; unsigned int c_flags = 0 , s_flags = 0 ; krb5_boolean is_referral ; const char * emsg = NULL ; krb5_kvno ticket_kvno = 0 ; struct kdc_request_state * state = NULL ; krb5_pa_data * pa_tgs_req ; krb5_data scratch ; krb5_pa_data * * e_data = NULL ; kdc_realm_t * kdc_active_realm = NULL ; krb5_audit_state * au_state = NULL ; krb5_data * * auth_indicators = NULL ; memset ( & reply , 0 , sizeof ( reply ) ) ; memset ( & reply_encpart , 0 , sizeof ( reply_encpart ) ) ; memset ( & ticket_reply , 0 , sizeof ( ticket_reply ) ) ; memset ( & enc_tkt_reply , 0 , sizeof ( enc_tkt_reply ) ) ; session_key . contents = NULL ; retval = decode_krb5_tgs_req ( pkt , & request ) ; if ( retval ) return retval ; sprinc = request -> server ; if ( request -> msg_type != KRB5_TGS_REQ ) { krb5_free_kdc_req ( handle -> kdc_err_context , request ) ; return KRB5_BADMSGTYPE ; } kdc_active_realm = setup_server_realm ( handle , request -> server ) ; if ( kdc_active_realm == NULL ) { krb5_free_kdc_req ( handle -> kdc_err_context , request ) ; return KRB5KDC_ERR_WRONG_REALM ; } errcode = kdc_make_rstate ( kdc_active_realm , & state ) ; if ( errcode != 0 ) { krb5_free_kdc_req ( handle -> kdc_err_context , request ) ; return errcode ; } errcode = kau_init_kdc_req ( kdc_context , request , from , & au_state ) ; if ( errcode ) { krb5_free_kdc_req ( handle -> kdc_err_context , request ) ; return errcode ; } kau_tgs_req ( kdc_context , TRUE , au_state ) ; errcode = kdc_process_tgs_req ( kdc_active_realm , request , from , pkt , & header_ticket , & header_server , & header_key , & subkey , & pa_tgs_req ) ; if ( header_ticket && header_ticket -> enc_part2 ) cprinc = header_ticket -> enc_part2 -> client ; if ( errcode ) { status = \"PROCESS_TGS\" ; goto cleanup ; } if ( ! header_ticket ) { errcode = KRB5_NO_TKT_SUPPLIED ; status = \"UNEXPECTED<S2SV_blank>NULL<S2SV_blank>in<S2SV_blank>header_ticket\" ; goto cleanup ; } errcode = kau_make_tkt_id ( kdc_context , header_ticket , & au_state -> tkt_in_id ) ; if ( errcode ) { status = \"GENERATE_TICKET_ID\" ; goto cleanup ; } scratch . length = pa_tgs_req -> length ; scratch . data = ( char * ) pa_tgs_req -> contents ; errcode = kdc_find_fast ( & request , & scratch , subkey , header_ticket -> enc_part2 -> session , state , NULL ) ; sprinc = request -> server ; if ( errcode != 0 ) { status = \"FIND_FAST\" ; goto cleanup ; } errcode = get_local_tgt ( kdc_context , & sprinc -> realm , header_server , & local_tgt , & local_tgt_storage ) ; if ( errcode ) { status = \"GET_LOCAL_TGT\" ; goto cleanup ; } au_state -> request = request ; header_enc_tkt = header_ticket -> enc_part2 ; au_state -> stage = SRVC_PRINC ; setflag ( s_flags , KRB5_KDB_FLAG_ALIAS_OK ) ; if ( isflagset ( request -> kdc_options , KDC_OPT_CANONICALIZE ) ) { setflag ( c_flags , KRB5_KDB_FLAG_CANONICALIZE ) ; setflag ( s_flags , KRB5_KDB_FLAG_CANONICALIZE ) ; } errcode = search_sprinc ( kdc_active_realm , request , s_flags , & server , & status ) ; if ( errcode != 0 ) goto cleanup ; sprinc = server -> princ ; is_referral = is_cross_tgs_principal ( server -> princ ) && ! krb5_principal_compare ( kdc_context , request -> server , server -> princ ) ; au_state -> stage = VALIDATE_POL ; if ( ( errcode = krb5_timeofday ( kdc_context , & kdc_time ) ) ) { status = \"TIME_OF_DAY\" ; goto cleanup ; } if ( ( retval = validate_tgs_request ( kdc_active_realm , request , * server , header_ticket , kdc_time , & status , & e_data ) ) ) { if ( ! status ) status = \"UNKNOWN_REASON\" ; if ( retval == KDC_ERR_POLICY || retval == KDC_ERR_BADOPTION ) au_state -> violation = PROT_CONSTRAINT ; errcode = retval + ERROR_TABLE_BASE_krb5 ; goto cleanup ; } if ( ! is_local_principal ( kdc_active_realm , header_enc_tkt -> client ) ) setflag ( c_flags , KRB5_KDB_FLAG_CROSS_REALM ) ; errcode = kdc_process_s4u2self_req ( kdc_active_realm , request , header_enc_tkt -> client , server , subkey , header_enc_tkt -> session , kdc_time , & s4u_x509_user , & client , & status ) ; if ( s4u_x509_user != NULL || errcode != 0 ) { if ( s4u_x509_user != NULL ) au_state -> s4u2self_user = s4u_x509_user -> user_id . user ; if ( errcode == KDC_ERR_POLICY || errcode == KDC_ERR_BADOPTION ) au_state -> violation = PROT_CONSTRAINT ; au_state -> status = status ; kau_s4u2self ( kdc_context , errcode ? FALSE : TRUE , au_state ) ; au_state -> s4u2self_user = NULL ; } if ( errcode ) goto cleanup ; if ( s4u_x509_user != NULL ) { setflag ( c_flags , KRB5_KDB_FLAG_PROTOCOL_TRANSITION ) ; if ( is_referral ) { errcode = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; status = \"LOOKING_UP_SERVER\" ; goto cleanup ; } } errcode = decrypt_2ndtkt ( kdc_active_realm , request , c_flags , & stkt_server , & status ) ; if ( errcode ) goto cleanup ; if ( isflagset ( request -> kdc_options , KDC_OPT_CNAME_IN_ADDL_TKT ) ) { errcode = kdc_process_s4u2proxy_req ( kdc_active_realm , request , request -> second_ticket [ st_idx ] -> enc_part2 , stkt_server , header_ticket -> enc_part2 -> client , request -> server , & status ) ; if ( errcode == KDC_ERR_POLICY || errcode == KDC_ERR_BADOPTION ) au_state -> violation = PROT_CONSTRAINT ; else if ( errcode ) au_state -> violation = LOCAL_POLICY ; au_state -> status = status ; retval = kau_make_tkt_id ( kdc_context , request -> second_ticket [ st_idx ] , & au_state -> evid_tkt_id ) ; if ( retval ) { status = \"GENERATE_TICKET_ID\" ; errcode = retval ; goto cleanup ; } kau_s4u2proxy ( kdc_context , errcode ? FALSE : TRUE , au_state ) ; if ( errcode ) goto cleanup ; setflag ( c_flags , KRB5_KDB_FLAG_CONSTRAINED_DELEGATION ) ; assert ( krb5_is_tgs_principal ( header_ticket -> server ) ) ; assert ( client == NULL ) ; client = stkt_server ; stkt_server = NULL ; } else if ( request -> kdc_options & KDC_OPT_ENC_TKT_IN_SKEY ) { krb5_db_free_principal ( kdc_context , stkt_server ) ; stkt_server = NULL ; } else assert ( stkt_server == NULL ) ; au_state -> stage = ISSUE_TKT ; errcode = gen_session_key ( kdc_active_realm , request , server , & session_key , & status ) ; if ( errcode ) goto cleanup ; if ( isflagset ( c_flags , KRB5_KDB_FLAG_CONSTRAINED_DELEGATION ) ) subject_tkt = request -> second_ticket [ st_idx ] -> enc_part2 ; else subject_tkt = header_enc_tkt ; authtime = subject_tkt -> times . authtime ; if ( s4u_x509_user == NULL ) { errcode = get_auth_indicators ( kdc_context , subject_tkt , local_tgt , & auth_indicators ) ; if ( errcode ) { status = \"GET_AUTH_INDICATORS\" ; goto cleanup ; } } errcode = check_indicators ( kdc_context , server , auth_indicators ) ; if ( errcode ) { status = \"HIGHER_AUTHENTICATION_REQUIRED\" ; goto cleanup ; } if ( is_referral ) ticket_reply . server = server -> princ ; else ticket_reply . server = request -> server ; enc_tkt_reply . flags = OPTS2FLAGS ( request -> kdc_options ) ; enc_tkt_reply . flags |= COPY_TKT_FLAGS ( header_enc_tkt -> flags ) ; enc_tkt_reply . times . starttime = 0 ; if ( isflagset ( server -> attributes , KRB5_KDB_OK_AS_DELEGATE ) ) setflag ( enc_tkt_reply . flags , TKT_FLG_OK_AS_DELEGATE ) ; setflag ( enc_tkt_reply . flags , TKT_FLG_ENC_PA_REP ) ; enc_tkt_reply . caddrs = header_enc_tkt -> caddrs ; reply_encpart . caddrs = 0 ; reply_encpart . enc_padata = NULL ; if ( isflagset ( request -> kdc_options , KDC_OPT_FORWARDABLE ) ) { if ( isflagset ( c_flags , KRB5_KDB_FLAG_PROTOCOL_TRANSITION ) ) { if ( client != NULL && isflagset ( client -> attributes , KRB5_KDB_DISALLOW_FORWARDABLE ) ) clear ( enc_tkt_reply . flags , TKT_FLG_FORWARDABLE ) ; else if ( ! isflagset ( header_enc_tkt -> flags , TKT_FLG_FORWARDABLE ) ) clear ( enc_tkt_reply . flags , TKT_FLG_FORWARDABLE ) ; else if ( ! is_referral && ! isflagset ( server -> attributes , KRB5_KDB_OK_TO_AUTH_AS_DELEGATE ) ) clear ( enc_tkt_reply . flags , TKT_FLG_FORWARDABLE ) ; } } if ( isflagset ( request -> kdc_options , KDC_OPT_FORWARDED ) || isflagset ( request -> kdc_options , KDC_OPT_PROXY ) ) { enc_tkt_reply . caddrs = request -> addresses ; reply_encpart . caddrs = request -> addresses ; } if ( isflagset ( request -> kdc_options , KDC_OPT_REQUEST_ANONYMOUS ) && ! isflagset ( header_enc_tkt -> flags , TKT_FLG_ANONYMOUS ) ) clear ( enc_tkt_reply . flags , TKT_FLG_ANONYMOUS ) ; if ( isflagset ( request -> kdc_options , KDC_OPT_POSTDATED ) ) { setflag ( enc_tkt_reply . flags , TKT_FLG_INVALID ) ; enc_tkt_reply . times . starttime = request -> from ; } else enc_tkt_reply . times . starttime = kdc_time ; if ( isflagset ( request -> kdc_options , KDC_OPT_VALIDATE ) ) { assert ( isflagset ( c_flags , KRB5_KDB_FLAGS_S4U ) == 0 ) ; ticket_reply = * ( header_ticket ) ; enc_tkt_reply = * ( header_ticket -> enc_part2 ) ; enc_tkt_reply . authorization_data = NULL ; clear ( enc_tkt_reply . flags , TKT_FLG_INVALID ) ; } if ( isflagset ( request -> kdc_options , KDC_OPT_RENEW ) ) { krb5_timestamp old_starttime ; krb5_deltat old_life ; assert ( isflagset ( c_flags , KRB5_KDB_FLAGS_S4U ) == 0 ) ; ticket_reply = * ( header_ticket ) ; enc_tkt_reply = * ( header_ticket -> enc_part2 ) ; enc_tkt_reply . authorization_data = NULL ; old_starttime = enc_tkt_reply . times . starttime ? enc_tkt_reply . times . starttime : enc_tkt_reply . times . authtime ; old_life = ts_delta ( enc_tkt_reply . times . endtime , old_starttime ) ; enc_tkt_reply . times . starttime = kdc_time ; enc_tkt_reply . times . endtime = ts_min ( header_ticket -> enc_part2 -> times . renew_till , ts_incr ( kdc_time , old_life ) ) ; } else { enc_tkt_reply . times . starttime = kdc_time ; kdc_get_ticket_endtime ( kdc_active_realm , enc_tkt_reply . times . starttime , header_enc_tkt -> times . endtime , request -> till , client , server , & enc_tkt_reply . times . endtime ) ; } kdc_get_ticket_renewtime ( kdc_active_realm , request , header_enc_tkt , client , server , & enc_tkt_reply ) ; enc_tkt_reply . times . authtime = authtime ; if ( enc_tkt_reply . times . starttime == enc_tkt_reply . times . authtime ) enc_tkt_reply . times . starttime = 0 ; if ( isflagset ( c_flags , KRB5_KDB_FLAG_PROTOCOL_TRANSITION ) ) { altcprinc = s4u_x509_user -> user_id . user ; } else if ( isflagset ( c_flags , KRB5_KDB_FLAG_CONSTRAINED_DELEGATION ) ) { altcprinc = subject_tkt -> client ; } else { altcprinc = NULL ; } if ( isflagset ( request -> kdc_options , KDC_OPT_ENC_TKT_IN_SKEY ) ) { krb5_enc_tkt_part * t2enc = request -> second_ticket [ st_idx ] -> enc_part2 ; encrypting_key = * ( t2enc -> session ) ; } else { if ( ( errcode = krb5_dbe_find_enctype ( kdc_context , server , - 1 , - 1 , 0 , & server_key ) ) ) { status = \"FINDING_SERVER_KEY\" ; goto cleanup ; } if ( ( errcode = krb5_dbe_decrypt_key_data ( kdc_context , NULL , server_key , & encrypting_key , NULL ) ) ) { status = \"DECRYPT_SERVER_KEY\" ; goto cleanup ; } } if ( isflagset ( c_flags , KRB5_KDB_FLAG_CONSTRAINED_DELEGATION ) ) { clear ( server -> attributes , KRB5_KDB_NO_AUTH_DATA_REQUIRED ) ; } if ( isflagset ( server -> attributes , KRB5_KDB_NO_AUTH_DATA_REQUIRED ) == 0 ) { if ( ! isflagset ( c_flags , KRB5_KDB_FLAGS_S4U ) ) { setflag ( c_flags , KRB5_KDB_FLAG_INCLUDE_PAC ) ; setflag ( c_flags , KRB5_KDB_FLAG_MAP_PRINCIPALS ) ; assert ( client == NULL ) ; errcode = krb5_db_get_principal ( kdc_context , subject_tkt -> client , c_flags , & client ) ; } } if ( isflagset ( c_flags , KRB5_KDB_FLAG_PROTOCOL_TRANSITION ) && ! isflagset ( c_flags , KRB5_KDB_FLAG_CROSS_REALM ) ) enc_tkt_reply . client = s4u_x509_user -> user_id . user ; else enc_tkt_reply . client = subject_tkt -> client ; enc_tkt_reply . session = & session_key ; enc_tkt_reply . transited . tr_type = KRB5_DOMAIN_X500_COMPRESS ; enc_tkt_reply . transited . tr_contents = empty_string ; if ( krb5_realm_compare ( kdc_context , header_ticket -> server , tgs_server ) || krb5_realm_compare ( kdc_context , header_ticket -> server , enc_tkt_reply . client ) ) { enc_tkt_reply . transited = header_enc_tkt -> transited ; } else { if ( header_enc_tkt -> transited . tr_type != KRB5_DOMAIN_X500_COMPRESS ) { status = \"VALIDATE_TRANSIT_TYPE\" ; errcode = KRB5KDC_ERR_TRTYPE_NOSUPP ; goto cleanup ; } memset ( & enc_tkt_reply . transited , 0 , sizeof ( enc_tkt_reply . transited ) ) ; enc_tkt_reply . transited . tr_type = KRB5_DOMAIN_X500_COMPRESS ; if ( ( errcode = add_to_transited ( & header_enc_tkt -> transited . tr_contents , & enc_tkt_reply . transited . tr_contents , header_ticket -> server , enc_tkt_reply . client , request -> server ) ) ) { status = \"ADD_TO_TRANSITED_LIST\" ; goto cleanup ; } newtransited = 1 ; } if ( isflagset ( c_flags , KRB5_KDB_FLAG_CROSS_REALM ) ) { errcode = validate_transit_path ( kdc_context , header_enc_tkt -> client , server , header_server ) ; if ( errcode ) { status = \"NON_TRANSITIVE\" ; goto cleanup ; } } if ( ! isflagset ( request -> kdc_options , KDC_OPT_DISABLE_TRANSITED_CHECK ) ) { errcode = kdc_check_transited_list ( kdc_active_realm , & enc_tkt_reply . transited . tr_contents , krb5_princ_realm ( kdc_context , header_enc_tkt -> client ) , krb5_princ_realm ( kdc_context , request -> server ) ) ; if ( errcode == 0 ) { setflag ( enc_tkt_reply . flags , TKT_FLG_TRANSIT_POLICY_CHECKED ) ; } else { log_tgs_badtrans ( kdc_context , cprinc , sprinc , & enc_tkt_reply . transited . tr_contents , errcode ) ; } } else krb5_klog_syslog ( LOG_INFO , _ ( \"not<S2SV_blank>checking<S2SV_blank>transit<S2SV_blank>path\" ) ) ; if ( kdc_active_realm -> realm_reject_bad_transit && ! isflagset ( enc_tkt_reply . flags , TKT_FLG_TRANSIT_POLICY_CHECKED ) ) { errcode = KRB5KDC_ERR_POLICY ; status = \"BAD_TRANSIT\" ; au_state -> violation = LOCAL_POLICY ; goto cleanup ; } errcode = handle_authdata ( kdc_context , c_flags , client , server , header_server , local_tgt , subkey != NULL ? subkey : header_ticket -> enc_part2 -> session , & encrypting_key , header_key , pkt , request , s4u_x509_user ? s4u_x509_user -> user_id . user : NULL , subject_tkt , auth_indicators , & enc_tkt_reply ) ; if ( errcode ) { krb5_klog_syslog ( LOG_INFO , _ ( \"TGS_REQ<S2SV_blank>:<S2SV_blank>handle_authdata<S2SV_blank>(%d)\" ) , errcode ) ; status = \"HANDLE_AUTHDATA\" ; goto cleanup ; } ticket_reply . enc_part2 = & enc_tkt_reply ; if ( isflagset ( request -> kdc_options , KDC_OPT_ENC_TKT_IN_SKEY ) ) { krb5_enc_tkt_part * t2enc = request -> second_ticket [ st_idx ] -> enc_part2 ; krb5_principal client2 = t2enc -> client ; if ( ! krb5_principal_compare ( kdc_context , request -> server , client2 ) ) { altcprinc = client2 ; errcode = KRB5KDC_ERR_SERVER_NOMATCH ; status = \"2ND_TKT_MISMATCH\" ; au_state -> status = status ; kau_u2u ( kdc_context , FALSE , au_state ) ; goto cleanup ; } ticket_kvno = 0 ; ticket_reply . enc_part . enctype = t2enc -> session -> enctype ; kau_u2u ( kdc_context , TRUE , au_state ) ; st_idx ++ ; } else { ticket_kvno = server_key -> key_data_kvno ; } errcode = krb5_encrypt_tkt_part ( kdc_context , & encrypting_key , & ticket_reply ) ; if ( ! isflagset ( request -> kdc_options , KDC_OPT_ENC_TKT_IN_SKEY ) ) krb5_free_keyblock_contents ( kdc_context , & encrypting_key ) ; if ( errcode ) { status = \"ENCRYPT_TICKET\" ; goto cleanup ; } ticket_reply . enc_part . kvno = ticket_kvno ; au_state -> stage = ENCR_REP ; reply . msg_type = KRB5_TGS_REP ; if ( isflagset ( c_flags , KRB5_KDB_FLAG_PROTOCOL_TRANSITION ) && krb5int_find_pa_data ( kdc_context , request -> padata , KRB5_PADATA_S4U_X509_USER ) != NULL ) { errcode = kdc_make_s4u2self_rep ( kdc_context , subkey , header_ticket -> enc_part2 -> session , s4u_x509_user , & reply , & reply_encpart ) ; if ( errcode ) { status = \"MAKE_S4U2SELF_PADATA\" ; au_state -> status = status ; } kau_s4u2self ( kdc_context , errcode ? FALSE : TRUE , au_state ) ; if ( errcode ) goto cleanup ; } reply . client = enc_tkt_reply . client ; reply . enc_part . kvno = 0 ; reply . ticket = & ticket_reply ; reply_encpart . session = & session_key ; reply_encpart . nonce = request -> nonce ; reply_encpart . times = enc_tkt_reply . times ; nolrentry . lr_type = KRB5_LRQ_NONE ; nolrentry . value = 0 ; nolrentry . magic = 0 ; nolrarray [ 0 ] = & nolrentry ; nolrarray [ 1 ] = 0 ; reply_encpart . last_req = nolrarray ; reply_encpart . key_exp = 0 ; reply_encpart . flags = enc_tkt_reply . flags ; reply_encpart . server = ticket_reply . server ; reply . enc_part . enctype = subkey ? subkey -> enctype : header_ticket -> enc_part2 -> session -> enctype ; errcode = kdc_fast_response_handle_padata ( state , request , & reply , subkey ? subkey -> enctype : header_ticket -> enc_part2 -> session -> enctype ) ; if ( errcode != 0 ) { status = \"MAKE_FAST_RESPONSE\" ; goto cleanup ; } errcode = kdc_fast_handle_reply_key ( state , subkey ? subkey : header_ticket -> enc_part2 -> session , & reply_key ) ; if ( errcode ) { status = \"MAKE_FAST_REPLY_KEY\" ; goto cleanup ; } errcode = return_enc_padata ( kdc_context , pkt , request , reply_key , server , & reply_encpart , is_referral && isflagset ( s_flags , KRB5_KDB_FLAG_CANONICALIZE ) ) ; if ( errcode ) { status = \"KDC_RETURN_ENC_PADATA\" ; goto cleanup ; } errcode = kau_make_tkt_id ( kdc_context , & ticket_reply , & au_state -> tkt_out_id ) ; if ( errcode ) { status = \"GENERATE_TICKET_ID\" ; goto cleanup ; } if ( kdc_fast_hide_client ( state ) ) reply . client = ( krb5_principal ) krb5_anonymous_principal ( ) ; errcode = krb5_encode_kdc_rep ( kdc_context , KRB5_TGS_REP , & reply_encpart , subkey ? 1 : 0 , reply_key , & reply , response ) ; if ( errcode ) { status = \"ENCODE_KDC_REP\" ; } else { status = \"ISSUE\" ; } memset ( ticket_reply . enc_part . ciphertext . data , 0 , ticket_reply . enc_part . ciphertext . length ) ; free ( ticket_reply . enc_part . ciphertext . data ) ; memset ( reply . enc_part . ciphertext . data , 0 , reply . enc_part . ciphertext . length ) ; free ( reply . enc_part . ciphertext . data ) ; cleanup : <S2SV_StartBug> assert ( status != NULL ) ; <S2SV_EndBug> if ( reply_key ) krb5_free_keyblock ( kdc_context , reply_key ) ; if ( errcode ) emsg = krb5_get_error_message ( kdc_context , errcode ) ; au_state -> status = status ; if ( ! errcode ) au_state -> reply = & reply ; kau_tgs_req ( kdc_context , errcode ? FALSE : TRUE , au_state ) ; kau_free_kdc_req ( au_state ) ; log_tgs_req ( kdc_context , from , request , & reply , cprinc , sprinc , altcprinc , authtime , c_flags , status , errcode , emsg ) ; if ( errcode ) { krb5_free_error_message ( kdc_context , emsg ) ; emsg = NULL ; } if ( errcode ) { int got_err = 0 ; if ( status == 0 ) { status = krb5_get_error_message ( kdc_context , errcode ) ; got_err = 1 ; } errcode -= ERROR_TABLE_BASE_krb5 ; if ( errcode < 0 || errcode > KRB_ERR_MAX ) errcode = KRB_ERR_GENERIC ; retval = prepare_error_tgs ( state , request , header_ticket , errcode , ( server != NULL ) ? server -> princ : NULL , response , status , e_data ) ; if ( got_err ) { krb5_free_error_message ( kdc_context , status ) ; status = 0 ; } } if ( header_ticket != NULL ) krb5_free_ticket ( kdc_context , header_ticket ) ; if ( request != NULL ) krb5_free_kdc_req ( kdc_context , request ) ; if ( state ) kdc_free_rstate ( state ) ; krb5_db_free_principal ( kdc_context , server ) ; krb5_db_free_principal ( kdc_context , stkt_server ) ; krb5_db_free_principal ( kdc_context , header_server ) ; krb5_db_free_principal ( kdc_context , client ) ; krb5_db_free_principal ( kdc_context , local_tgt_storage ) ; if ( session_key . contents != NULL ) krb5_free_keyblock_contents ( kdc_context , & session_key ) ; if ( newtransited ) free ( enc_tkt_reply . transited . tr_contents . data ) ; if ( s4u_x509_user != NULL ) krb5_free_pa_s4u_x509_user ( kdc_context , s4u_x509_user ) ; if ( kdc_issued_auth_data != NULL ) krb5_free_authdata ( kdc_context , kdc_issued_auth_data ) ; if ( subkey != NULL ) krb5_free_keyblock ( kdc_context , subkey ) ; if ( header_key != NULL ) krb5_free_keyblock ( kdc_context , header_key ) ; if ( reply . padata ) krb5_free_pa_data ( kdc_context , reply . padata ) ; if ( reply_encpart . enc_padata ) krb5_free_pa_data ( kdc_context , reply_encpart . enc_padata ) ; if ( enc_tkt_reply . authorization_data != NULL ) krb5_free_authdata ( kdc_context , enc_tkt_reply . authorization_data ) ; krb5_free_pa_data ( kdc_context , e_data ) ; k5_free_data_ptr_list ( auth_indicators ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; cleanup : if ( status == NULL ) status = \"UNKNOWN_REASON\" <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0216\n\n```\nCWE-20 static int netbk_set_skb_gso ( struct xenvif * vif , struct sk_buff * skb , struct xen_netif_extra_info * gso ) { if ( ! gso -> u . gso . size ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"GSO<S2SV_blank>size<S2SV_blank>must<S2SV_blank>not<S2SV_blank>be<S2SV_blank>zero.\\\\n\" ) ; <S2SV_EndBug> return - EINVAL ; } if ( gso -> u . gso . type != XEN_NETIF_GSO_TYPE_TCPV4 ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"Bad<S2SV_blank>GSO<S2SV_blank>type<S2SV_blank>%d.\\\\n\" , gso -> u . gso . type ) ; <S2SV_EndBug> return - EINVAL ; } skb_shinfo ( skb ) -> gso_size = gso -> u . gso . size ; skb_shinfo ( skb ) -> gso_type = SKB_GSO_TCPV4 ; skb_shinfo ( skb ) -> gso_type |= SKB_GSO_DODGY ; skb_shinfo ( skb ) -> gso_segs = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> dev , \"GSO<S2SV_blank>size<S2SV_blank>must<S2SV_blank>not<S2SV_blank>be<S2SV_blank>zero.\\\\n\" ) ; netbk_fatal_tx_err ( vif <S2SV_ModStart> XEN_NETIF_GSO_TYPE_TCPV4 ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> gso . type ) ; netbk_fatal_tx_err ( vif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static void ext4_xattr_release_block ( handle_t * handle , struct inode * inode , struct buffer_head * bh ) { <S2SV_StartBug> struct mb_cache_entry * ce = NULL ; <S2SV_EndBug> <S2SV_StartBug> int error = 0 ; <S2SV_EndBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; ce = mb_cache_entry_get ( ext4_mb_cache , bh -> b_bdev , bh -> b_blocknr ) ; BUFFER_TRACE ( bh , \"get_write_access\" ) ; error = ext4_journal_get_write_access ( handle , bh ) ; if ( error ) goto out ; lock_buffer ( bh ) ; if ( BHDR ( bh ) -> h_refcount == cpu_to_le32 ( 1 ) ) { <S2SV_StartBug> ea_bdebug ( bh , \"refcount<S2SV_blank>now=0;<S2SV_blank>freeing\" ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ce ) <S2SV_EndBug> mb_cache_entry_free ( ce ) ; get_bh ( bh ) ; unlock_buffer ( bh ) ; ext4_free_blocks ( handle , inode , bh , 0 , 1 , EXT4_FREE_BLOCKS_METADATA | EXT4_FREE_BLOCKS_FORGET ) ; } else { le32_add_cpu ( & BHDR ( bh ) -> h_refcount , - 1 ) ; <S2SV_StartBug> if ( ce ) <S2SV_EndBug> mb_cache_entry_release ( ce ) ; if ( ext4_handle_valid ( handle ) ) error = ext4_handle_dirty_xattr_block ( handle , inode , bh ) ; unlock_buffer ( bh ) ; if ( ! ext4_handle_valid ( handle ) ) error = ext4_handle_dirty_xattr_block ( handle , inode , bh ) ; if ( IS_SYNC ( inode ) ) ext4_handle_sync ( handle ) ; dquot_free_block ( inode , EXT4_C2B ( EXT4_SB ( inode -> i_sb ) , 1 ) ) ; ea_bdebug ( bh , \"refcount<S2SV_blank>now=%d;<S2SV_blank>releasing\" , le32_to_cpu ( BHDR ( bh ) -> h_refcount ) ) ; } out : ext4_std_error ( inode -> i_sb , error ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bh ) { <S2SV_ModEnd> int error = <S2SV_ModStart> error = 0 <S2SV_ModEnd> ; BUFFER_TRACE ( <S2SV_ModStart> ) ) { __u32 hash = le32_to_cpu ( BHDR ( bh ) -> h_hash ) ; <S2SV_ModStart> \"refcount<S2SV_blank>now=0;<S2SV_blank>freeing\" ) ; mb2_cache_entry_delete_block ( EXT4_GET_MB_CACHE ( inode ) , hash , bh -> b_blocknr <S2SV_ModEnd> ) ; get_bh <S2SV_ModStart> ; if ( <S2SV_ModEnd> ext4_handle_valid ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3673\n\n```\nCWE-20 sctp_disposition_t sctp_sf_do_asconf_ack ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { struct sctp_chunk * asconf_ack = arg ; struct sctp_chunk * last_asconf = asoc -> addip_last_asconf ; struct sctp_chunk * abort ; struct sctp_paramhdr * err_param = NULL ; sctp_addiphdr_t * addip_hdr ; __u32 sent_serial , rcvd_serial ; if ( ! sctp_vtag_verify ( asconf_ack , asoc ) ) { sctp_add_cmd_sf ( commands , SCTP_CMD_REPORT_BAD_TAG , SCTP_NULL ( ) ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } if ( ! net -> sctp . addip_noauth && ! asconf_ack -> auth ) return sctp_sf_discard_chunk ( net , ep , asoc , type , arg , commands ) ; if ( ! sctp_chunk_length_valid ( asconf_ack , sizeof ( sctp_addip_chunk_t ) ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; addip_hdr = ( sctp_addiphdr_t * ) asconf_ack -> skb -> data ; rcvd_serial = ntohl ( addip_hdr -> serial ) ; if ( ! sctp_verify_asconf ( asoc , <S2SV_StartBug> ( sctp_paramhdr_t * ) addip_hdr -> params , <S2SV_EndBug> ( void * ) asconf_ack -> chunk_end , & err_param ) ) return sctp_sf_violation_paramlen ( net , ep , asoc , type , arg , ( void * ) err_param , commands ) ; if ( last_asconf ) { addip_hdr = ( sctp_addiphdr_t * ) last_asconf -> subh . addip_hdr ; sent_serial = ntohl ( addip_hdr -> serial ) ; } else { sent_serial = asoc -> addip_serial - 1 ; } if ( ADDIP_SERIAL_gte ( rcvd_serial , sent_serial + 1 ) && ! ( asoc -> addip_last_asconf ) ) { abort = sctp_make_abort ( asoc , asconf_ack , sizeof ( sctp_errhdr_t ) ) ; if ( abort ) { sctp_init_cause ( abort , SCTP_ERROR_ASCONF_ACK , 0 ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_REPLY , SCTP_CHUNK ( abort ) ) ; } sctp_add_cmd_sf ( commands , SCTP_CMD_TIMER_STOP , SCTP_TO ( SCTP_EVENT_TIMEOUT_T4_RTO ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_DISCARD_PACKET , SCTP_NULL ( ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_SET_SK_ERR , SCTP_ERROR ( ECONNABORTED ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_ASSOC_FAILED , SCTP_PERR ( SCTP_ERROR_ASCONF_ACK ) ) ; SCTP_INC_STATS ( net , SCTP_MIB_ABORTEDS ) ; SCTP_DEC_STATS ( net , SCTP_MIB_CURRESTAB ) ; return SCTP_DISPOSITION_ABORT ; } if ( ( rcvd_serial == sent_serial ) && asoc -> addip_last_asconf ) { sctp_add_cmd_sf ( commands , SCTP_CMD_TIMER_STOP , SCTP_TO ( SCTP_EVENT_TIMEOUT_T4_RTO ) ) ; if ( ! sctp_process_asconf_ack ( ( struct sctp_association * ) asoc , asconf_ack ) ) { sctp_add_cmd_sf ( commands , SCTP_CMD_SEND_NEXT_ASCONF , SCTP_NULL ( ) ) ; return SCTP_DISPOSITION_CONSUME ; } abort = sctp_make_abort ( asoc , asconf_ack , sizeof ( sctp_errhdr_t ) ) ; if ( abort ) { sctp_init_cause ( abort , SCTP_ERROR_RSRC_LOW , 0 ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_REPLY , SCTP_CHUNK ( abort ) ) ; } sctp_add_cmd_sf ( commands , SCTP_CMD_DISCARD_PACKET , SCTP_NULL ( ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_SET_SK_ERR , SCTP_ERROR ( ECONNABORTED ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_ASSOC_FAILED , SCTP_PERR ( SCTP_ERROR_ASCONF_ACK ) ) ; SCTP_INC_STATS ( net , SCTP_MIB_ABORTEDS ) ; SCTP_DEC_STATS ( net , SCTP_MIB_CURRESTAB ) ; return SCTP_DISPOSITION_ABORT ; } return SCTP_DISPOSITION_DISCARD ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( asoc , asconf_ack , false , <S2SV_ModEnd> & err_param )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 int ssl3_write_bytes ( SSL * s , int type , const void * buf_ , int len ) { const unsigned char * buf = buf_ ; int tot ; unsigned int n , split_send_fragment , maxpipes ; # if ! defined ( OPENSSL_NO_MULTIBLOCK ) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK unsigned int max_send_fragment , nw ; unsigned int u_len = ( unsigned int ) len ; # endif SSL3_BUFFER * wb = & s -> rlayer . wbuf [ 0 ] ; int i ; if ( len < 0 ) { SSLerr ( SSL_F_SSL3_WRITE_BYTES , SSL_R_SSL_NEGATIVE_LENGTH ) ; return - 1 ; } s -> rwstate = SSL_NOTHING ; tot = s -> rlayer . wnum ; if ( ( unsigned int ) len < s -> rlayer . wnum ) { SSLerr ( SSL_F_SSL3_WRITE_BYTES , SSL_R_BAD_LENGTH ) ; return - 1 ; } s -> rlayer . wnum = 0 ; if ( SSL_in_init ( s ) && ! ossl_statem_get_in_handshake ( s ) ) { i = s -> handshake_func ( s ) ; if ( i < 0 ) return ( i ) ; if ( i == 0 ) { SSLerr ( SSL_F_SSL3_WRITE_BYTES , SSL_R_SSL_HANDSHAKE_FAILURE ) ; return - 1 ; } } if ( wb -> left != 0 ) { i = ssl3_write_pending ( s , type , & buf [ tot ] , s -> rlayer . wpend_tot ) ; if ( i <= 0 ) { s -> rlayer . wnum = tot ; return i ; } tot += i ; } # if ! defined ( OPENSSL_NO_MULTIBLOCK ) && EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK if ( type == SSL3_RT_APPLICATION_DATA && u_len >= 4 * ( max_send_fragment = s -> max_send_fragment ) && s -> compress == NULL && s -> msg_callback == NULL && <S2SV_StartBug> ! SSL_USE_ETM ( s ) && SSL_USE_EXPLICIT_IV ( s ) && <S2SV_EndBug> EVP_CIPHER_flags ( EVP_CIPHER_CTX_cipher ( s -> enc_write_ctx ) ) & EVP_CIPH_FLAG_TLS1_1_MULTIBLOCK ) { unsigned char aad [ 13 ] ; EVP_CTRL_TLS1_1_MULTIBLOCK_PARAM mb_param ; int packlen ; if ( ( max_send_fragment & 0xfff ) == 0 ) max_send_fragment -= 512 ; if ( tot == 0 || wb -> buf == NULL ) { ssl3_release_write_buffer ( s ) ; packlen = EVP_CIPHER_CTX_ctrl ( s -> enc_write_ctx , EVP_CTRL_TLS1_1_MULTIBLOCK_MAX_BUFSIZE , max_send_fragment , NULL ) ; if ( u_len >= 8 * max_send_fragment ) packlen *= 8 ; else packlen *= 4 ; if ( ! ssl3_setup_write_buffer ( s , 1 , packlen ) ) { SSLerr ( SSL_F_SSL3_WRITE_BYTES , ERR_R_MALLOC_FAILURE ) ; return - 1 ; } } else if ( tot == len ) { ssl3_release_write_buffer ( s ) ; return tot ; } n = ( len - tot ) ; for ( ; ; ) { if ( n < 4 * max_send_fragment ) { ssl3_release_write_buffer ( s ) ; break ; } if ( s -> s3 -> alert_dispatch ) { i = s -> method -> ssl_dispatch_alert ( s ) ; if ( i <= 0 ) { s -> rlayer . wnum = tot ; return i ; } } if ( n >= 8 * max_send_fragment ) nw = max_send_fragment * ( mb_param . interleave = 8 ) ; else nw = max_send_fragment * ( mb_param . interleave = 4 ) ; memcpy ( aad , s -> rlayer . write_sequence , 8 ) ; aad [ 8 ] = type ; aad [ 9 ] = ( unsigned char ) ( s -> version >> 8 ) ; aad [ 10 ] = ( unsigned char ) ( s -> version ) ; aad [ 11 ] = 0 ; aad [ 12 ] = 0 ; mb_param . out = NULL ; mb_param . inp = aad ; mb_param . len = nw ; packlen = EVP_CIPHER_CTX_ctrl ( s -> enc_write_ctx , EVP_CTRL_TLS1_1_MULTIBLOCK_AAD , sizeof ( mb_param ) , & mb_param ) ; if ( packlen <= 0 || packlen > ( int ) wb -> len ) { ssl3_release_write_buffer ( s ) ; break ; } mb_param . out = wb -> buf ; mb_param . inp = & buf [ tot ] ; mb_param . len = nw ; if ( EVP_CIPHER_CTX_ctrl ( s -> enc_write_ctx , EVP_CTRL_TLS1_1_MULTIBLOCK_ENCRYPT , sizeof ( mb_param ) , & mb_param ) <= 0 ) return - 1 ; s -> rlayer . write_sequence [ 7 ] += mb_param . interleave ; if ( s -> rlayer . write_sequence [ 7 ] < mb_param . interleave ) { int j = 6 ; while ( j >= 0 && ( ++ s -> rlayer . write_sequence [ j -- ] ) == 0 ) ; } wb -> offset = 0 ; wb -> left = packlen ; s -> rlayer . wpend_tot = nw ; s -> rlayer . wpend_buf = & buf [ tot ] ; s -> rlayer . wpend_type = type ; s -> rlayer . wpend_ret = nw ; i = ssl3_write_pending ( s , type , & buf [ tot ] , nw ) ; if ( i <= 0 ) { if ( i < 0 && ( ! s -> wbio || ! BIO_should_retry ( s -> wbio ) ) ) { ssl3_release_write_buffer ( s ) ; } s -> rlayer . wnum = tot ; return i ; } if ( i == ( int ) n ) { ssl3_release_write_buffer ( s ) ; return tot + i ; } n -= i ; tot += i ; } } else # endif if ( tot == len ) { if ( s -> mode & SSL_MODE_RELEASE_BUFFERS && ! SSL_IS_DTLS ( s ) ) ssl3_release_write_buffer ( s ) ; return tot ; } n = ( len - tot ) ; split_send_fragment = s -> split_send_fragment ; maxpipes = s -> max_pipelines ; if ( maxpipes > SSL_MAX_PIPELINES ) { SSLerr ( SSL_F_SSL3_WRITE_BYTES , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } if ( maxpipes == 0 || s -> enc_write_ctx == NULL || ! ( EVP_CIPHER_flags ( EVP_CIPHER_CTX_cipher ( s -> enc_write_ctx ) ) & EVP_CIPH_FLAG_PIPELINE ) || ! SSL_USE_EXPLICIT_IV ( s ) ) maxpipes = 1 ; if ( s -> max_send_fragment == 0 || split_send_fragment > s -> max_send_fragment || split_send_fragment == 0 ) { SSLerr ( SSL_F_SSL3_WRITE_BYTES , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } for ( ; ; ) { unsigned int pipelens [ SSL_MAX_PIPELINES ] , tmppipelen , remain ; unsigned int numpipes , j ; if ( n == 0 ) numpipes = 1 ; else numpipes = ( ( n - 1 ) / split_send_fragment ) + 1 ; if ( numpipes > maxpipes ) numpipes = maxpipes ; if ( n / numpipes >= s -> max_send_fragment ) { for ( j = 0 ; j < numpipes ; j ++ ) { pipelens [ j ] = s -> max_send_fragment ; } } else { tmppipelen = n / numpipes ; remain = n % numpipes ; for ( j = 0 ; j < numpipes ; j ++ ) { pipelens [ j ] = tmppipelen ; if ( j < remain ) pipelens [ j ] ++ ; } } i = do_ssl3_write ( s , type , & ( buf [ tot ] ) , pipelens , numpipes , 0 ) ; if ( i <= 0 ) { s -> rlayer . wnum = tot ; return i ; } if ( ( i == ( int ) n ) || ( type == SSL3_RT_APPLICATION_DATA && ( s -> mode & SSL_MODE_ENABLE_PARTIAL_WRITE ) ) ) { s -> s3 -> empty_fragment_done = 0 ; if ( ( i == ( int ) n ) && s -> mode & SSL_MODE_RELEASE_BUFFERS && ! SSL_IS_DTLS ( s ) ) ssl3_release_write_buffer ( s ) ; return tot + i ; } n -= i ; tot += i ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL && ! SSL_WRITE_ETM <S2SV_ModEnd> ( s )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-667(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-667 static void userfaultfd_event_wait_completion ( struct userfaultfd_ctx * ctx , struct userfaultfd_wait_queue * ewq ) { struct userfaultfd_ctx * release_new_ctx ; if ( WARN_ON_ONCE ( current -> flags & PF_EXITING ) ) goto out ; ewq -> ctx = ctx ; init_waitqueue_entry ( & ewq -> wq , current ) ; release_new_ctx = NULL ; spin_lock ( & ctx -> event_wqh . lock ) ; __add_wait_queue ( & ctx -> event_wqh , & ewq -> wq ) ; for ( ; ; ) { set_current_state ( TASK_KILLABLE ) ; if ( ewq -> msg . event == 0 ) break ; if ( READ_ONCE ( ctx -> released ) || fatal_signal_pending ( current ) ) { __remove_wait_queue ( & ctx -> event_wqh , & ewq -> wq ) ; if ( ewq -> msg . event == UFFD_EVENT_FORK ) { struct userfaultfd_ctx * new ; new = ( struct userfaultfd_ctx * ) ( unsigned long ) ewq -> msg . arg . reserved . reserved1 ; release_new_ctx = new ; } break ; } spin_unlock ( & ctx -> event_wqh . lock ) ; wake_up_poll ( & ctx -> fd_wqh , EPOLLIN ) ; schedule ( ) ; spin_lock ( & ctx -> event_wqh . lock ) ; } __set_current_state ( TASK_RUNNING ) ; spin_unlock ( & ctx -> event_wqh . lock ) ; if ( release_new_ctx ) { struct vm_area_struct * vma ; struct mm_struct * mm = release_new_ctx -> mm ; down_write ( & mm -> mmap_sem ) ; <S2SV_StartBug> for ( vma = mm -> mmap ; vma ; vma = vma -> vm_next ) <S2SV_EndBug> if ( vma -> vm_userfaultfd_ctx . ctx == release_new_ctx ) { vma -> vm_userfaultfd_ctx = NULL_VM_UFFD_CTX ; vma -> vm_flags &= ~ ( VM_UFFD_WP | VM_UFFD_MISSING ) ; } up_write ( & mm -> mmap_sem ) ; userfaultfd_ctx_put ( release_new_ctx ) ; } out : WRITE_ONCE ( ctx -> mmap_changing , false ) ; userfaultfd_ctx_put ( ctx ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mmap_sem ) ; VM_WARN_ON ( ! mmget_still_valid ( mm ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13022\n\n```\nCWE-125 static void ip_optprint ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register u_int option_len ; const char * sep = \"\" ; for ( ; length > 0 ; cp += option_len , length -= option_len ) { u_int option_code ; ND_PRINT ( ( ndo , \"%s\" , sep ) ) ; sep = \",\" ; ND_TCHECK ( * cp ) ; option_code = * cp ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( ip_option_values , \"unknown<S2SV_blank>%u\" , option_code ) ) ) ; if ( option_code == IPOPT_NOP || option_code == IPOPT_EOL ) option_len = 1 ; else { ND_TCHECK ( cp [ 1 ] ) ; option_len = cp [ 1 ] ; if ( option_len < 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; return ; } } if ( option_len > length ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; return ; } ND_TCHECK2 ( * cp , option_len ) ; switch ( option_code ) { case IPOPT_EOL : return ; case IPOPT_TS : ip_printts ( ndo , cp , option_len ) ; break ; case IPOPT_RR : case IPOPT_SSRR : case IPOPT_LSRR : <S2SV_StartBug> ip_printroute ( ndo , cp , option_len ) ; <S2SV_EndBug> break ; case IPOPT_RA : if ( option_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , option_len ) ) ; break ; } ND_TCHECK ( cp [ 3 ] ) ; if ( EXTRACT_16BITS ( & cp [ 2 ] ) != 0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>value<S2SV_blank>%u\" , EXTRACT_16BITS ( & cp [ 2 ] ) ) ) ; break ; case IPOPT_NOP : case IPOPT_SECURITY : default : break ; } } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case IPOPT_LSRR : if ( <S2SV_ModStart> , option_len ) == - 1 ) goto trunc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-120 enum ImapAuthRes imap_auth_gss ( struct ImapData * idata , const char * method ) { gss_buffer_desc request_buf , send_token ; gss_buffer_t sec_token ; gss_name_t target_name ; gss_ctx_id_t context ; gss_OID mech_name ; char server_conf_flags ; gss_qop_t quality ; int cflags ; OM_uint32 maj_stat , min_stat ; char buf1 [ GSS_BUFSIZE ] , buf2 [ GSS_BUFSIZE ] ; unsigned long buf_size ; int rc ; if ( ! mutt_bit_isset ( idata -> capabilities , AGSSAPI ) ) return IMAP_AUTH_UNAVAIL ; if ( mutt_account_getuser ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; snprintf ( buf1 , sizeof ( buf1 ) , \"imap@%s\" , idata -> conn -> account . host ) ; request_buf . value = buf1 ; request_buf . length = strlen ( buf1 ) ; maj_stat = gss_import_name ( & min_stat , & request_buf , gss_nt_service_name , & target_name ) ; if ( maj_stat != GSS_S_COMPLETE ) { mutt_debug ( 2 , \"Couldn\\'t<S2SV_blank>get<S2SV_blank>service<S2SV_blank>name<S2SV_blank>for<S2SV_blank>[%s]\\\\n\" , buf1 ) ; return IMAP_AUTH_UNAVAIL ; } else if ( DebugLevel >= 2 ) { gss_display_name ( & min_stat , target_name , & request_buf , & mech_name ) ; mutt_debug ( 2 , \"Using<S2SV_blank>service<S2SV_blank>name<S2SV_blank>[%s]\\\\n\" , ( char * ) request_buf . value ) ; gss_release_buffer ( & min_stat , & request_buf ) ; } sec_token = GSS_C_NO_BUFFER ; context = GSS_C_NO_CONTEXT ; maj_stat = gss_init_sec_context ( & min_stat , GSS_C_NO_CREDENTIAL , & context , target_name , GSS_C_NO_OID , GSS_C_MUTUAL_FLAG | GSS_C_SEQUENCE_FLAG , 0 , GSS_C_NO_CHANNEL_BINDINGS , sec_token , NULL , & send_token , ( unsigned int * ) & cflags , NULL ) ; if ( maj_stat != GSS_S_COMPLETE && maj_stat != GSS_S_CONTINUE_NEEDED ) { print_gss_error ( maj_stat , min_stat ) ; mutt_debug ( 1 , \"Error<S2SV_blank>acquiring<S2SV_blank>credentials<S2SV_blank>-<S2SV_blank>no<S2SV_blank>TGT?\\\\n\" ) ; gss_release_name ( & min_stat , & target_name ) ; return IMAP_AUTH_UNAVAIL ; } mutt_message ( _ ( \"Authenticating<S2SV_blank>(GSSAPI)...\" ) ) ; imap_cmd_start ( idata , \"AUTHENTICATE<S2SV_blank>GSSAPI\" ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_RESPOND ) { mutt_debug ( 2 , \"Invalid<S2SV_blank>response<S2SV_blank>from<S2SV_blank>server:<S2SV_blank>%s\\\\n\" , buf1 ) ; gss_release_name ( & min_stat , & target_name ) ; goto bail ; } mutt_debug ( 2 , \"Sending<S2SV_blank>credentials\\\\n\" ) ; mutt_b64_encode ( buf1 , send_token . value , send_token . length , sizeof ( buf1 ) - 2 ) ; gss_release_buffer ( & min_stat , & send_token ) ; mutt_str_strcat ( buf1 , sizeof ( buf1 ) , \"\\\\r\\\\n\" ) ; mutt_socket_send ( idata -> conn , buf1 ) ; while ( maj_stat == GSS_S_CONTINUE_NEEDED ) { do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_RESPOND ) { mutt_debug ( 1 , \"#1<S2SV_blank>Error<S2SV_blank>receiving<S2SV_blank>server<S2SV_blank>response.\\\\n\" ) ; gss_release_name ( & min_stat , & target_name ) ; goto bail ; } <S2SV_StartBug> request_buf . length = mutt_b64_decode ( buf2 , idata -> buf + 2 ) ; <S2SV_EndBug> request_buf . value = buf2 ; sec_token = & request_buf ; maj_stat = gss_init_sec_context ( & min_stat , GSS_C_NO_CREDENTIAL , & context , target_name , GSS_C_NO_OID , GSS_C_MUTUAL_FLAG | GSS_C_SEQUENCE_FLAG , 0 , GSS_C_NO_CHANNEL_BINDINGS , sec_token , NULL , & send_token , ( unsigned int * ) & cflags , NULL ) ; if ( maj_stat != GSS_S_COMPLETE && maj_stat != GSS_S_CONTINUE_NEEDED ) { print_gss_error ( maj_stat , min_stat ) ; mutt_debug ( 1 , \"Error<S2SV_blank>exchanging<S2SV_blank>credentials\\\\n\" ) ; gss_release_name ( & min_stat , & target_name ) ; goto err_abort_cmd ; } mutt_b64_encode ( buf1 , send_token . value , send_token . length , sizeof ( buf1 ) - 2 ) ; gss_release_buffer ( & min_stat , & send_token ) ; mutt_str_strcat ( buf1 , sizeof ( buf1 ) , \"\\\\r\\\\n\" ) ; mutt_socket_send ( idata -> conn , buf1 ) ; } gss_release_name ( & min_stat , & target_name ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_RESPOND ) { mutt_debug ( 1 , \"#2<S2SV_blank>Error<S2SV_blank>receiving<S2SV_blank>server<S2SV_blank>response.\\\\n\" ) ; goto bail ; } <S2SV_StartBug> request_buf . length = mutt_b64_decode ( buf2 , idata -> buf + 2 ) ; <S2SV_EndBug> request_buf . value = buf2 ; maj_stat = gss_unwrap ( & min_stat , context , & request_buf , & send_token , & cflags , & quality ) ; if ( maj_stat != GSS_S_COMPLETE ) { print_gss_error ( maj_stat , min_stat ) ; mutt_debug ( 2 , \"Couldn\\'t<S2SV_blank>unwrap<S2SV_blank>security<S2SV_blank>level<S2SV_blank>data\\\\n\" ) ; gss_release_buffer ( & min_stat , & send_token ) ; goto err_abort_cmd ; } mutt_debug ( 2 , \"Credential<S2SV_blank>exchange<S2SV_blank>complete\\\\n\" ) ; server_conf_flags = ( ( char * ) send_token . value ) [ 0 ] ; if ( ! ( ( ( char * ) send_token . value ) [ 0 ] & GSS_AUTH_P_NONE ) ) { mutt_debug ( 2 , \"Server<S2SV_blank>requires<S2SV_blank>integrity<S2SV_blank>or<S2SV_blank>privacy\\\\n\" ) ; gss_release_buffer ( & min_stat , & send_token ) ; goto err_abort_cmd ; } ( ( char * ) send_token . value ) [ 0 ] = '\\\\0' ; buf_size = ntohl ( * ( ( long * ) send_token . value ) ) ; gss_release_buffer ( & min_stat , & send_token ) ; mutt_debug ( 2 , \"Unwrapped<S2SV_blank>security<S2SV_blank>level<S2SV_blank>flags:<S2SV_blank>%c%c%c\\\\n\" , ( server_conf_flags & GSS_AUTH_P_NONE ) ? 'N' : '-' , ( server_conf_flags & GSS_AUTH_P_INTEGRITY ) ? 'I' : '-' , ( server_conf_flags & GSS_AUTH_P_PRIVACY ) ? 'P' : '-' ) ; mutt_debug ( 2 , \"Maximum<S2SV_blank>GSS<S2SV_blank>token<S2SV_blank>size<S2SV_blank>is<S2SV_blank>%ld\\\\n\" , buf_size ) ; buf_size = htonl ( buf_size ) ; memcpy ( buf1 , & buf_size , 4 ) ; buf1 [ 0 ] = GSS_AUTH_P_NONE ; strncpy ( buf1 + 4 , idata -> conn -> account . user , sizeof ( buf1 ) - 4 ) ; request_buf . value = buf1 ; request_buf . length = 4 + strlen ( idata -> conn -> account . user ) ; maj_stat = gss_wrap ( & min_stat , context , 0 , GSS_C_QOP_DEFAULT , & request_buf , & cflags , & send_token ) ; if ( maj_stat != GSS_S_COMPLETE ) { mutt_debug ( 2 , \"Error<S2SV_blank>creating<S2SV_blank>login<S2SV_blank>request\\\\n\" ) ; goto err_abort_cmd ; } mutt_b64_encode ( buf1 , send_token . value , send_token . length , sizeof ( buf1 ) - 2 ) ; mutt_debug ( 2 , \"Requesting<S2SV_blank>authorisation<S2SV_blank>as<S2SV_blank>%s\\\\n\" , idata -> conn -> account . user ) ; mutt_str_strcat ( buf1 , sizeof ( buf1 ) , \"\\\\r\\\\n\" ) ; mutt_socket_send ( idata -> conn , buf1 ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc == IMAP_CMD_RESPOND ) { mutt_debug ( 1 , \"Unexpected<S2SV_blank>server<S2SV_blank>continuation<S2SV_blank>request.\\\\n\" ) ; goto err_abort_cmd ; } if ( imap_code ( idata -> buf ) ) { mutt_debug ( 2 , \"Releasing<S2SV_blank>GSS<S2SV_blank>credentials\\\\n\" ) ; maj_stat = gss_delete_sec_context ( & min_stat , & context , & send_token ) ; if ( maj_stat != GSS_S_COMPLETE ) mutt_debug ( 1 , \"Error<S2SV_blank>releasing<S2SV_blank>credentials\\\\n\" ) ; gss_release_buffer ( & min_stat , & send_token ) ; return IMAP_AUTH_SUCCESS ; } else goto bail ; err_abort_cmd : mutt_socket_send ( idata -> conn , \"*\\\\r\\\\n\" ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; bail : mutt_error ( _ ( \"GSSAPI<S2SV_blank>authentication<S2SV_blank>failed.\" ) ) ; return IMAP_AUTH_FAILURE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buf + 2 , sizeof ( buf2 ) <S2SV_ModStart> buf + 2 , sizeof ( buf2 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4300\n\n```\nCWE-190 static int read_SubStreamsInfo ( struct archive_read * a , struct _7z_substream_info * ss , struct _7z_folder * f , size_t numFolders ) { const unsigned char * p ; uint64_t * usizes ; size_t unpack_streams ; int type ; unsigned i ; uint32_t numDigests ; memset ( ss , 0 , sizeof ( * ss ) ) ; for ( i = 0 ; i < numFolders ; i ++ ) f [ i ] . numUnpackStreams = 1 ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; if ( type == kNumUnPackStream ) { unpack_streams = 0 ; for ( i = 0 ; i < numFolders ; i ++ ) { if ( parse_7zip_uint64 ( a , & ( f [ i ] . numUnpackStreams ) ) < 0 ) return ( - 1 ) ; if ( UMAX_ENTRY < f [ i ] . numUnpackStreams ) return ( - 1 ) ; <S2SV_StartBug> unpack_streams += ( size_t ) f [ i ] . numUnpackStreams ; <S2SV_EndBug> } if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; } else unpack_streams = numFolders ; ss -> unpack_streams = unpack_streams ; if ( unpack_streams ) { ss -> unpackSizes = calloc ( unpack_streams , sizeof ( * ss -> unpackSizes ) ) ; ss -> digestsDefined = calloc ( unpack_streams , sizeof ( * ss -> digestsDefined ) ) ; ss -> digests = calloc ( unpack_streams , sizeof ( * ss -> digests ) ) ; if ( ss -> unpackSizes == NULL || ss -> digestsDefined == NULL || ss -> digests == NULL ) return ( - 1 ) ; } usizes = ss -> unpackSizes ; for ( i = 0 ; i < numFolders ; i ++ ) { unsigned pack ; uint64_t sum ; if ( f [ i ] . numUnpackStreams == 0 ) continue ; sum = 0 ; if ( type == kSize ) { for ( pack = 1 ; pack < f [ i ] . numUnpackStreams ; pack ++ ) { if ( parse_7zip_uint64 ( a , usizes ) < 0 ) return ( - 1 ) ; sum += * usizes ++ ; } } * usizes ++ = folder_uncompressed_size ( & f [ i ] ) - sum ; } if ( type == kSize ) { if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; } for ( i = 0 ; i < unpack_streams ; i ++ ) { ss -> digestsDefined [ i ] = 0 ; ss -> digests [ i ] = 0 ; } numDigests = 0 ; for ( i = 0 ; i < numFolders ; i ++ ) { if ( f [ i ] . numUnpackStreams != 1 || ! f [ i ] . digest_defined ) numDigests += ( uint32_t ) f [ i ] . numUnpackStreams ; } if ( type == kCRC ) { struct _7z_digests tmpDigests ; unsigned char * digestsDefined = ss -> digestsDefined ; uint32_t * digests = ss -> digests ; int di = 0 ; memset ( & tmpDigests , 0 , sizeof ( tmpDigests ) ) ; if ( read_Digests ( a , & ( tmpDigests ) , numDigests ) < 0 ) { free_Digest ( & tmpDigests ) ; return ( - 1 ) ; } for ( i = 0 ; i < numFolders ; i ++ ) { if ( f [ i ] . numUnpackStreams == 1 && f [ i ] . digest_defined ) { * digestsDefined ++ = 1 ; * digests ++ = f [ i ] . digest ; } else { unsigned j ; for ( j = 0 ; j < f [ i ] . numUnpackStreams ; j ++ , di ++ ) { * digestsDefined ++ = tmpDigests . defineds [ di ] ; * digests ++ = tmpDigests . digests [ di ] ; } } } free_Digest ( & tmpDigests ) ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; } if ( type != kEnd ) return ( - 1 ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( unpack_streams > SIZE_MAX - UMAX_ENTRY ) { return ( - 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2850\n\n```\nCWE-119 int iscsi_decode_text_input ( u8 phase , u8 sender , char * textbuf , u32 length , struct iscsi_conn * conn ) { struct iscsi_param_list * param_list = conn -> param_list ; char * tmpbuf , * start = NULL , * end = NULL ; tmpbuf = kzalloc ( length + 1 , GFP_KERNEL ) ; if ( ! tmpbuf ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>tmpbuf.\\\\n\" ) ; return - 1 ; } memcpy ( tmpbuf , textbuf , length ) ; tmpbuf [ length ] = '\\\\0' ; start = tmpbuf ; end = ( start + length ) ; while ( start < end ) { char * key , * value ; struct iscsi_param * param ; if ( iscsi_extract_key_value ( start , & key , & value ) < 0 ) { kfree ( tmpbuf ) ; return - 1 ; } pr_debug ( \"Got<S2SV_blank>key:<S2SV_blank>%s=%s\\\\n\" , key , value ) ; if ( phase & PHASE_SECURITY ) { if ( iscsi_check_for_auth_key ( key ) > 0 ) { <S2SV_StartBug> char * tmpptr = key + strlen ( key ) ; <S2SV_EndBug> * tmpptr = '=' ; kfree ( tmpbuf ) ; return 1 ; } } param = iscsi_check_key ( key , phase , sender , param_list ) ; if ( ! param ) { if ( iscsi_add_notunderstood_response ( key , value , param_list ) < 0 ) { kfree ( tmpbuf ) ; return - 1 ; } start += strlen ( key ) + strlen ( value ) + 2 ; continue ; } if ( iscsi_check_value ( param , value ) < 0 ) { kfree ( tmpbuf ) ; return - 1 ; } start += strlen ( key ) + strlen ( value ) + 2 ; if ( IS_PSTATE_PROPOSER ( param ) ) { if ( iscsi_check_proposer_state ( param , value ) < 0 ) { kfree ( tmpbuf ) ; return - 1 ; } SET_PSTATE_RESPONSE_GOT ( param ) ; } else { if ( iscsi_check_acceptor_state ( param , value , conn ) < 0 ) { kfree ( tmpbuf ) ; return - 1 ; } SET_PSTATE_ACCEPTOR ( param ) ; } } kfree ( tmpbuf ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { <S2SV_ModEnd> kfree ( tmpbuf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1957\n\n```\nCWE-264 static struct mount * clone_mnt ( struct mount * old , struct dentry * root , int flag ) { struct super_block * sb = old -> mnt . mnt_sb ; struct mount * mnt ; int err ; mnt = alloc_vfsmnt ( old -> mnt_devname ) ; if ( ! mnt ) return ERR_PTR ( - ENOMEM ) ; if ( flag & ( CL_SLAVE | CL_PRIVATE | CL_SHARED_TO_SLAVE ) ) mnt -> mnt_group_id = 0 ; else mnt -> mnt_group_id = old -> mnt_group_id ; if ( ( flag & CL_MAKE_SHARED ) && ! mnt -> mnt_group_id ) { err = mnt_alloc_group_id ( mnt ) ; if ( err ) goto out_free ; } mnt -> mnt . mnt_flags = old -> mnt . mnt_flags & ~ MNT_WRITE_HOLD ; <S2SV_StartBug> atomic_inc ( & sb -> s_active ) ; <S2SV_EndBug> mnt -> mnt . mnt_sb = sb ; mnt -> mnt . mnt_root = dget ( root ) ; mnt -> mnt_mountpoint = mnt -> mnt . mnt_root ; mnt -> mnt_parent = mnt ; br_write_lock ( & vfsmount_lock ) ; list_add_tail ( & mnt -> mnt_instance , & sb -> s_mounts ) ; br_write_unlock ( & vfsmount_lock ) ; if ( ( flag & CL_SLAVE ) || ( ( flag & CL_SHARED_TO_SLAVE ) && IS_MNT_SHARED ( old ) ) ) { list_add ( & mnt -> mnt_slave , & old -> mnt_slave_list ) ; mnt -> mnt_master = old ; CLEAR_MNT_SHARED ( mnt ) ; } else if ( ! ( flag & CL_PRIVATE ) ) { if ( ( flag & CL_MAKE_SHARED ) || IS_MNT_SHARED ( old ) ) list_add ( & mnt -> mnt_share , & old -> mnt_share ) ; if ( IS_MNT_SLAVE ( old ) ) list_add ( & mnt -> mnt_slave , & old -> mnt_slave ) ; mnt -> mnt_master = old -> mnt_master ; } if ( flag & CL_MAKE_SHARED ) set_mnt_shared ( mnt ) ; if ( flag & CL_EXPIRE ) { if ( ! list_empty ( & old -> mnt_expire ) ) list_add ( & mnt -> mnt_expire , & old -> mnt_expire ) ; } return mnt ; out_free : free_vfsmnt ( mnt ) ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ~ MNT_WRITE_HOLD ; if ( ( flag & CL_UNPRIVILEGED ) && ( mnt -> mnt . mnt_flags & MNT_READONLY ) ) mnt -> mnt . mnt_flags |= MNT_LOCK_READONLY ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18344\n\n```\nCWE-125 int common_timer_set ( struct k_itimer * timr , int flags , struct itimerspec64 * new_setting , struct itimerspec64 * old_setting ) { const struct k_clock * kc = timr -> kclock ; bool sigev_none ; ktime_t expires ; if ( old_setting ) common_timer_get ( timr , old_setting ) ; timr -> it_interval = 0 ; if ( kc -> timer_try_to_cancel ( timr ) < 0 ) return TIMER_RETRY ; timr -> it_active = 0 ; timr -> it_requeue_pending = ( timr -> it_requeue_pending + 2 ) & ~ REQUEUE_PENDING ; timr -> it_overrun_last = 0 ; if ( ! new_setting -> it_value . tv_sec && ! new_setting -> it_value . tv_nsec ) return 0 ; timr -> it_interval = timespec64_to_ktime ( new_setting -> it_interval ) ; expires = timespec64_to_ktime ( new_setting -> it_value ) ; <S2SV_StartBug> sigev_none = ( timr -> it_sigev_notify & ~ SIGEV_THREAD_ID ) == SIGEV_NONE ; <S2SV_EndBug> kc -> timer_arm ( timr , expires , flags & TIMER_ABSTIME , sigev_none ) ; timr -> it_active = ! sigev_none ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sigev_none = <S2SV_ModEnd> timr -> it_sigev_notify <S2SV_ModStart> timr -> it_sigev_notify <S2SV_ModEnd> == SIGEV_NONE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static size_t write_compressed_header ( VP9_COMP * cpi , uint8_t * data ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> <S2SV_StartBug> FRAME_CONTEXT * const fc = & cm -> fc ; <S2SV_EndBug> vp9_writer header_bc ; vp9_start_encode ( & header_bc , data ) ; if ( xd -> lossless ) cm -> tx_mode = ONLY_4X4 ; else <S2SV_StartBug> encode_txfm_probs ( cm , & header_bc ) ; <S2SV_EndBug> update_coef_probs ( cpi , & header_bc ) ; <S2SV_StartBug> update_skip_probs ( cm , & header_bc ) ; <S2SV_EndBug> if ( ! frame_is_intra_only ( cm ) ) { int i ; for ( i = 0 ; i < INTER_MODE_CONTEXTS ; ++ i ) <S2SV_StartBug> prob_diff_update ( vp9_inter_mode_tree , cm -> fc . inter_mode_probs [ i ] , <S2SV_EndBug> <S2SV_StartBug> cm -> counts . inter_mode [ i ] , INTER_MODES , & header_bc ) ; <S2SV_EndBug> vp9_zero ( cm -> counts . inter_mode ) ; if ( cm -> interp_filter == SWITCHABLE ) <S2SV_StartBug> update_switchable_interp_probs ( cm , & header_bc ) ; <S2SV_EndBug> for ( i = 0 ; i < INTRA_INTER_CONTEXTS ; i ++ ) vp9_cond_prob_diff_update ( & header_bc , & fc -> intra_inter_prob [ i ] , <S2SV_StartBug> cm -> counts . intra_inter [ i ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( cm -> allow_comp_inter_inter ) { <S2SV_EndBug> const int use_compound_pred = cm -> reference_mode != SINGLE_REFERENCE ; const int use_hybrid_pred = cm -> reference_mode == REFERENCE_MODE_SELECT ; <S2SV_StartBug> vp9_write_bit ( & header_bc , use_compound_pred ) ; <S2SV_EndBug> if ( use_compound_pred ) { <S2SV_StartBug> vp9_write_bit ( & header_bc , use_hybrid_pred ) ; <S2SV_EndBug> if ( use_hybrid_pred ) for ( i = 0 ; i < COMP_INTER_CONTEXTS ; i ++ ) vp9_cond_prob_diff_update ( & header_bc , & fc -> comp_inter_prob [ i ] , <S2SV_StartBug> cm -> counts . comp_inter [ i ] ) ; <S2SV_EndBug> } } if ( cm -> reference_mode != COMPOUND_REFERENCE ) { for ( i = 0 ; i < REF_CONTEXTS ; i ++ ) { vp9_cond_prob_diff_update ( & header_bc , & fc -> single_ref_prob [ i ] [ 0 ] , <S2SV_StartBug> cm -> counts . single_ref [ i ] [ 0 ] ) ; <S2SV_EndBug> vp9_cond_prob_diff_update ( & header_bc , & fc -> single_ref_prob [ i ] [ 1 ] , <S2SV_StartBug> cm -> counts . single_ref [ i ] [ 1 ] ) ; <S2SV_EndBug> } } if ( cm -> reference_mode != SINGLE_REFERENCE ) for ( i = 0 ; i < REF_CONTEXTS ; i ++ ) vp9_cond_prob_diff_update ( & header_bc , & fc -> comp_ref_prob [ i ] , <S2SV_StartBug> cm -> counts . comp_ref [ i ] ) ; <S2SV_EndBug> for ( i = 0 ; i < BLOCK_SIZE_GROUPS ; ++ i ) <S2SV_StartBug> prob_diff_update ( vp9_intra_mode_tree , cm -> fc . y_mode_prob [ i ] , <S2SV_EndBug> <S2SV_StartBug> cm -> counts . y_mode [ i ] , INTRA_MODES , & header_bc ) ; <S2SV_EndBug> for ( i = 0 ; i < PARTITION_CONTEXTS ; ++ i ) prob_diff_update ( vp9_partition_tree , fc -> partition_prob [ i ] , <S2SV_StartBug> cm -> counts . partition [ i ] , PARTITION_TYPES , & header_bc ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_write_nmv_probs ( cm , cm -> allow_high_precision_mv , & header_bc ) ; <S2SV_EndBug> } <S2SV_StartBug> vp9_stop_encode ( & header_bc ) ; <S2SV_EndBug> assert ( header_bc . pos <= 0xffff ) ; return header_bc . pos ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & cpi -> td . <S2SV_ModStart> const fc = cm -> fc ; FRAME_COUNTS * counts = cpi -> td . counts ; vpx_writer header_bc ; vpx_start_encode <S2SV_ModEnd> ( & header_bc <S2SV_ModStart> , & header_bc , counts <S2SV_ModStart> , & header_bc , counts <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> inter_mode_probs [ i <S2SV_ModStart> i ] , counts -> <S2SV_ModEnd> inter_mode [ i <S2SV_ModStart> , & header_bc <S2SV_ModEnd> ) ; if <S2SV_ModStart> , & header_bc , counts <S2SV_ModStart> i ] , counts -> <S2SV_ModEnd> intra_inter [ i <S2SV_ModStart> ; if ( cpi <S2SV_ModEnd> -> allow_comp_inter_inter ) <S2SV_ModStart> == REFERENCE_MODE_SELECT ; vpx_write_bit <S2SV_ModEnd> ( & header_bc <S2SV_ModStart> use_compound_pred ) { vpx_write_bit <S2SV_ModEnd> ( & header_bc <S2SV_ModStart> i ] , counts -> <S2SV_ModEnd> comp_inter [ i <S2SV_ModStart> 0 ] , counts -> <S2SV_ModEnd> single_ref [ i <S2SV_ModStart> 1 ] , counts -> <S2SV_ModEnd> single_ref [ i <S2SV_ModStart> i ] , counts -> <S2SV_ModEnd> comp_ref [ i <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> y_mode_prob [ i <S2SV_ModStart> i ] , counts -> <S2SV_ModEnd> y_mode [ i <S2SV_ModStart> i ] , counts -> <S2SV_ModEnd> partition [ i <S2SV_ModStart> , & header_bc , & counts -> mv <S2SV_ModStart> ) ; } vpx_stop_encode <S2SV_ModEnd> ( & header_bc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15473\n\n```\nCWE-125 void ndpi_search_openvpn ( struct ndpi_detection_module_struct * ndpi_struct , struct ndpi_flow_struct * flow ) { struct ndpi_packet_struct * packet = & flow -> packet ; const u_int8_t * ovpn_payload = packet -> payload ; const u_int8_t * session_remote ; u_int8_t opcode ; u_int8_t alen ; int8_t hmac_size ; int8_t failed = 0 ; <S2SV_StartBug> if ( packet -> payload_packet_len >= 40 ) { <S2SV_EndBug> if ( packet -> tcp != NULL ) <S2SV_StartBug> ovpn_payload += 2 ; <S2SV_EndBug> opcode = ovpn_payload [ 0 ] & P_OPCODE_MASK ; if ( packet -> udp ) { # ifdef DEBUG printf ( \"[packet_id:<S2SV_blank>%u][opcode:<S2SV_blank>%u][Packet<S2SV_blank>ID:<S2SV_blank>%d][%u<S2SV_blank><-><S2SV_blank>%u][len:<S2SV_blank>%u]\\\\n\" , flow -> num_processed_pkts , opcode , check_pkid_and_detect_hmac_size ( ovpn_payload ) , <S2SV_StartBug> htons ( packet -> udp -> source ) , htons ( packet -> udp -> dest ) , packet -> payload_packet_len ) ; <S2SV_EndBug> # endif if ( ( flow -> num_processed_pkts == 1 ) && ( <S2SV_StartBug> ( ( packet -> payload_packet_len == 112 ) <S2SV_EndBug> && ( ( opcode == 168 ) || ( opcode == 192 ) ) ) <S2SV_StartBug> || ( ( packet -> payload_packet_len == 80 ) <S2SV_EndBug> && ( ( opcode == 184 ) || ( opcode == 88 ) || ( opcode == 160 ) || ( opcode == 168 ) || ( opcode == 200 ) ) ) ) ) { NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>openvpn\\\\n\" ) ; ndpi_set_detected_protocol ( ndpi_struct , flow , NDPI_PROTOCOL_OPENVPN , NDPI_PROTOCOL_UNKNOWN ) ; return ; } } if ( flow -> ovpn_counter < P_HARD_RESET_CLIENT_MAX_COUNT && ( opcode == P_CONTROL_HARD_RESET_CLIENT_V1 || opcode == P_CONTROL_HARD_RESET_CLIENT_V2 ) ) { if ( check_pkid_and_detect_hmac_size ( ovpn_payload ) > 0 ) { memcpy ( flow -> ovpn_session_id , ovpn_payload + 1 , 8 ) ; NDPI_LOG_DBG2 ( ndpi_struct , \"session<S2SV_blank>key:<S2SV_blank>%02x%02x%02x%02x%02x%02x%02x%02x\\\\n\" , flow -> ovpn_session_id [ 0 ] , flow -> ovpn_session_id [ 1 ] , flow -> ovpn_session_id [ 2 ] , flow -> ovpn_session_id [ 3 ] , flow -> ovpn_session_id [ 4 ] , flow -> ovpn_session_id [ 5 ] , flow -> ovpn_session_id [ 6 ] , flow -> ovpn_session_id [ 7 ] ) ; } } else if ( flow -> ovpn_counter >= 1 && flow -> ovpn_counter <= P_HARD_RESET_CLIENT_MAX_COUNT && ( opcode == P_CONTROL_HARD_RESET_SERVER_V1 || opcode == P_CONTROL_HARD_RESET_SERVER_V2 ) ) { hmac_size = check_pkid_and_detect_hmac_size ( ovpn_payload ) ; if ( hmac_size > 0 ) { <S2SV_StartBug> alen = ovpn_payload [ P_PACKET_ID_ARRAY_LEN_OFFSET ( hmac_size ) ] ; <S2SV_EndBug> if ( alen > 0 ) { <S2SV_StartBug> session_remote = ovpn_payload + P_PACKET_ID_ARRAY_LEN_OFFSET ( hmac_size ) + 1 + alen * 4 ; <S2SV_EndBug> <S2SV_StartBug> if ( memcmp ( flow -> ovpn_session_id , session_remote , 8 ) == 0 ) { <S2SV_EndBug> NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>openvpn\\\\n\" ) ; ndpi_set_detected_protocol ( ndpi_struct , flow , NDPI_PROTOCOL_OPENVPN , NDPI_PROTOCOL_UNKNOWN ) ; return ; } else { NDPI_LOG_DBG2 ( ndpi_struct , \"key<S2SV_blank>mismatch:<S2SV_blank>%02x%02x%02x%02x%02x%02x%02x%02x\\\\n\" , session_remote [ 0 ] , session_remote [ 1 ] , session_remote [ 2 ] , session_remote [ 3 ] , session_remote [ 4 ] , session_remote [ 5 ] , session_remote [ 6 ] , session_remote [ 7 ] ) ; failed = 1 ; <S2SV_StartBug> } <S2SV_EndBug> } else failed = 1 ; } else failed = 1 ; } else failed = 1 ; flow -> ovpn_counter ++ ; if ( failed ) { NDPI_EXCLUDE_PROTO ( ndpi_struct , flow ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; int16_t ovpn_payload_len = <S2SV_ModEnd> packet -> payload_packet_len <S2SV_ModStart> packet -> payload_packet_len ; if ( ovpn_payload_len <S2SV_ModStart> ovpn_payload += 2 , ovpn_payload_len -= 2 ; <S2SV_ModStart> dest ) , ovpn_payload_len <S2SV_ModEnd> ) ; # <S2SV_ModStart> ( ( ( ovpn_payload_len <S2SV_ModEnd> == 112 ) <S2SV_ModStart> || ( ( ovpn_payload_len <S2SV_ModEnd> == 80 ) <S2SV_ModStart> 0 ) { u_int16_t offset = P_PACKET_ID_ARRAY_LEN_OFFSET ( hmac_size ) ; <S2SV_ModStart> = ovpn_payload [ offset <S2SV_ModEnd> ] ; if <S2SV_ModStart> 0 ) { offset += <S2SV_ModEnd> 1 + alen <S2SV_ModStart> ; if ( ( offset + 8 ) <= ovpn_payload_len ) { session_remote = & ovpn_payload [ offset ] ; if ( <S2SV_ModStart> 1 ; } } else failed = 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3713\n\n```\nCWE-284 static bool msr_mtrr_valid ( unsigned msr ) { switch ( msr ) { case 0x200 ... 0x200 + 2 * KVM_NR_VAR_MTRR - 1 : case MSR_MTRRfix64K_00000 : case MSR_MTRRfix16K_80000 : case MSR_MTRRfix16K_A0000 : case MSR_MTRRfix4K_C0000 : case MSR_MTRRfix4K_C8000 : case MSR_MTRRfix4K_D0000 : case MSR_MTRRfix4K_D8000 : case MSR_MTRRfix4K_E0000 : case MSR_MTRRfix4K_E8000 : case MSR_MTRRfix4K_F0000 : case MSR_MTRRfix4K_F8000 : case MSR_MTRRdefType : case MSR_IA32_CR_PAT : return true ; <S2SV_StartBug> case 0x2f8 : <S2SV_EndBug> return true ; } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return true ; <S2SV_ModEnd> } return false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15120\n\n```\nCWE-119 gboolean _pango_emoji_iter_next ( PangoEmojiIter * iter ) { PangoEmojiType current_emoji_type = PANGO_EMOJI_TYPE_INVALID ; if ( iter -> end == iter -> text_end ) return FALSE ; iter -> start = iter -> end ; for ( ; iter -> end < iter -> text_end ; iter -> end = g_utf8_next_char ( iter -> end ) ) { gunichar ch = g_utf8_get_char ( iter -> end ) ; if ( ( ! ( ch == kZeroWidthJoinerCharacter && ! iter -> is_emoji ) && ch != kVariationSelector15Character && ch != kVariationSelector16Character && ch != kCombiningEnclosingCircleBackslashCharacter && ! _pango_Is_Regional_Indicator ( ch ) && ! ( ( ch == kLeftSpeechBubbleCharacter || ch == kRainbowCharacter || ch == kMaleSignCharacter || ch == kFemaleSignCharacter || ch == kStaffOfAesculapiusCharacter ) && ! iter -> is_emoji ) ) || current_emoji_type == PANGO_EMOJI_TYPE_INVALID ) { current_emoji_type = _pango_get_emoji_type ( ch ) ; } if ( g_utf8_next_char ( iter -> end ) < iter -> text_end ) { gunichar peek_char = g_utf8_get_char ( g_utf8_next_char ( iter -> end ) ) ; if ( current_emoji_type == PANGO_EMOJI_TYPE_EMOJI_EMOJI && peek_char == kVariationSelector15Character ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_TEXT ; } if ( ( current_emoji_type == PANGO_EMOJI_TYPE_EMOJI_TEXT || _pango_Is_Emoji_Keycap_Base ( ch ) ) && peek_char == kVariationSelector16Character ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_EMOJI ; } if ( _pango_Is_Emoji_Keycap_Base ( ch ) && peek_char == kCombiningEnclosingKeycapCharacter ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_EMOJI ; } ; if ( _pango_Is_Regional_Indicator ( ch ) && _pango_Is_Regional_Indicator ( peek_char ) ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_EMOJI ; } if ( ( ch == kEyeCharacter || ch == kWavingWhiteFlagCharacter ) && peek_char == kZeroWidthJoinerCharacter ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_EMOJI ; } } if ( iter -> is_emoji == ( gboolean ) 2 ) iter -> is_emoji = ! PANGO_EMOJI_TYPE_IS_EMOJI ( current_emoji_type ) ; if ( iter -> is_emoji == PANGO_EMOJI_TYPE_IS_EMOJI ( current_emoji_type ) ) { iter -> is_emoji = ! PANGO_EMOJI_TYPE_IS_EMOJI ( current_emoji_type ) ; <S2SV_StartBug> return TRUE ; <S2SV_EndBug> } } iter -> is_emoji = PANGO_EMOJI_TYPE_IS_EMOJI ( current_emoji_type ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_emoji_type ) ; if ( iter -> start == iter -> end ) iter -> end = g_utf8_next_char ( iter -> end ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3534\n\n```\nCWE-269 static int __poke_user ( struct task_struct * child , addr_t addr , addr_t data ) { struct user * dummy = NULL ; addr_t offset ; if ( addr < ( addr_t ) & dummy -> regs . acrs ) { if ( addr == ( addr_t ) & dummy -> regs . psw . mask ) { unsigned long mask = PSW_MASK_USER ; mask |= is_ri_task ( child ) ? PSW_MASK_RI : 0 ; <S2SV_StartBug> if ( ( data & ~ mask ) != PSW_USER_BITS ) <S2SV_EndBug> return - EINVAL ; if ( ( data & PSW_MASK_EA ) && ! ( data & PSW_MASK_BA ) ) return - EINVAL ; } * ( addr_t * ) ( ( addr_t ) & task_pt_regs ( child ) -> psw + addr ) = data ; } else if ( addr < ( addr_t ) ( & dummy -> regs . orig_gpr2 ) ) { offset = addr - ( addr_t ) & dummy -> regs . acrs ; # ifdef CONFIG_64BIT if ( addr == ( addr_t ) & dummy -> regs . acrs [ 15 ] ) child -> thread . acrs [ 15 ] = ( unsigned int ) ( data >> 32 ) ; else # endif * ( addr_t * ) ( ( addr_t ) & child -> thread . acrs + offset ) = data ; } else if ( addr == ( addr_t ) & dummy -> regs . orig_gpr2 ) { task_pt_regs ( child ) -> orig_gpr2 = data ; } else if ( addr < ( addr_t ) & dummy -> regs . fp_regs ) { return 0 ; } else if ( addr < ( addr_t ) ( & dummy -> regs . fp_regs + 1 ) ) { if ( addr == ( addr_t ) & dummy -> regs . fp_regs . fpc ) if ( ( unsigned int ) data != 0 || test_fp_ctl ( data >> ( BITS_PER_LONG - 32 ) ) ) return - EINVAL ; offset = addr - ( addr_t ) & dummy -> regs . fp_regs ; * ( addr_t * ) ( ( addr_t ) & child -> thread . fp_regs + offset ) = data ; } else if ( addr < ( addr_t ) ( & dummy -> regs . per_info + 1 ) ) { addr -= ( addr_t ) & dummy -> regs . per_info ; __poke_user_per ( child , addr , data ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ( data ^ PSW_USER_BITS ) <S2SV_ModStart> ~ mask ) return - EINVAL ; if ( ( data & PSW_MASK_ASC ) == PSW_ASC_HOME <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void find_next_key_frame ( VP8_COMP * cpi , FIRSTPASS_STATS * this_frame ) { int i , j ; FIRSTPASS_STATS last_frame ; FIRSTPASS_STATS first_frame ; FIRSTPASS_STATS next_frame ; FIRSTPASS_STATS * start_position ; double decay_accumulator = 1.0 ; double boost_score = 0 ; double old_boost_score = 0.0 ; double loop_decay_rate ; double kf_mod_err = 0.0 ; double kf_group_err = 0.0 ; double kf_group_intra_err = 0.0 ; double kf_group_coded_err = 0.0 ; double recent_loop_decay [ 8 ] = { 1.0 , 1.0 , 1.0 , 1.0 , 1.0 , 1.0 , 1.0 , 1.0 } ; <S2SV_StartBug> vpx_memset ( & next_frame , 0 , sizeof ( next_frame ) ) ; <S2SV_EndBug> vp8_clear_system_state ( ) ; start_position = cpi -> twopass . stats_in ; cpi -> common . frame_type = KEY_FRAME ; cpi -> this_key_frame_forced = cpi -> next_key_frame_forced ; cpi -> source_alt_ref_active = 0 ; cpi -> frames_till_gf_update_due = 0 ; cpi -> twopass . frames_to_key = 1 ; <S2SV_StartBug> vpx_memcpy ( & first_frame , this_frame , sizeof ( * this_frame ) ) ; <S2SV_EndBug> cpi -> twopass . kf_group_bits = 0 ; cpi -> twopass . kf_group_error_left = 0 ; kf_mod_err = calculate_modified_err ( cpi , this_frame ) ; i = 0 ; while ( cpi -> twopass . stats_in < cpi -> twopass . stats_in_end ) { kf_group_err += calculate_modified_err ( cpi , this_frame ) ; kf_group_intra_err += this_frame -> intra_error ; kf_group_coded_err += this_frame -> coded_error ; <S2SV_StartBug> vpx_memcpy ( & last_frame , this_frame , sizeof ( * this_frame ) ) ; <S2SV_EndBug> input_stats ( cpi , this_frame ) ; if ( cpi -> oxcf . auto_key && lookup_next_frame_stats ( cpi , & next_frame ) != EOF ) { if ( ( i >= MIN_GF_INTERVAL ) && test_candidate_kf ( cpi , & last_frame , this_frame , & next_frame ) ) { break ; } loop_decay_rate = get_prediction_decay_rate ( cpi , & next_frame ) ; recent_loop_decay [ i % 8 ] = loop_decay_rate ; decay_accumulator = 1.0 ; for ( j = 0 ; j < 8 ; j ++ ) { decay_accumulator = decay_accumulator * recent_loop_decay [ j ] ; } if ( detect_transition_to_still ( cpi , i , ( cpi -> key_frame_frequency - i ) , loop_decay_rate , decay_accumulator ) ) { break ; } cpi -> twopass . frames_to_key ++ ; if ( cpi -> twopass . frames_to_key >= 2 * ( int ) cpi -> key_frame_frequency ) break ; } else cpi -> twopass . frames_to_key ++ ; i ++ ; } if ( cpi -> oxcf . auto_key && cpi -> twopass . frames_to_key > ( int ) cpi -> key_frame_frequency ) { FIRSTPASS_STATS * current_pos = cpi -> twopass . stats_in ; FIRSTPASS_STATS tmp_frame ; cpi -> twopass . frames_to_key /= 2 ; <S2SV_StartBug> vpx_memcpy ( & tmp_frame , & first_frame , sizeof ( first_frame ) ) ; <S2SV_EndBug> reset_fpf_position ( cpi , start_position ) ; kf_group_err = 0 ; kf_group_intra_err = 0 ; kf_group_coded_err = 0 ; for ( i = 0 ; i < cpi -> twopass . frames_to_key ; i ++ ) { kf_group_err += calculate_modified_err ( cpi , & tmp_frame ) ; kf_group_intra_err += tmp_frame . intra_error ; kf_group_coded_err += tmp_frame . coded_error ; input_stats ( cpi , & tmp_frame ) ; } reset_fpf_position ( cpi , current_pos ) ; cpi -> next_key_frame_forced = 1 ; } else cpi -> next_key_frame_forced = 0 ; if ( cpi -> twopass . stats_in >= cpi -> twopass . stats_in_end ) { kf_group_err += calculate_modified_err ( cpi , this_frame ) ; kf_group_intra_err += this_frame -> intra_error ; kf_group_coded_err += this_frame -> coded_error ; } if ( ( cpi -> twopass . bits_left > 0 ) && ( cpi -> twopass . modified_error_left > 0.0 ) ) { int max_bits = frame_max_bits ( cpi ) ; int64_t max_grp_bits ; cpi -> twopass . kf_group_bits = ( int64_t ) ( cpi -> twopass . bits_left * ( kf_group_err / cpi -> twopass . modified_error_left ) ) ; max_grp_bits = ( int64_t ) max_bits * ( int64_t ) cpi -> twopass . frames_to_key ; if ( cpi -> twopass . kf_group_bits > max_grp_bits ) cpi -> twopass . kf_group_bits = max_grp_bits ; if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { int64_t opt_buffer_lvl = cpi -> oxcf . optimal_buffer_level ; int64_t buffer_lvl = cpi -> buffer_level ; if ( buffer_lvl >= opt_buffer_lvl ) { int64_t high_water_mark = ( opt_buffer_lvl + cpi -> oxcf . maximum_buffer_size ) >> 1 ; int64_t av_group_bits ; av_group_bits = ( int64_t ) cpi -> av_per_frame_bandwidth * ( int64_t ) cpi -> twopass . frames_to_key ; if ( cpi -> buffer_level >= high_water_mark ) { int64_t min_group_bits ; min_group_bits = av_group_bits + ( int64_t ) ( buffer_lvl - high_water_mark ) ; if ( cpi -> twopass . kf_group_bits < min_group_bits ) cpi -> twopass . kf_group_bits = min_group_bits ; } else if ( cpi -> twopass . kf_group_bits < av_group_bits ) { int64_t bits_below_av = av_group_bits - cpi -> twopass . kf_group_bits ; cpi -> twopass . kf_group_bits += ( int64_t ) ( ( double ) bits_below_av * ( double ) ( buffer_lvl - opt_buffer_lvl ) / ( double ) ( high_water_mark - opt_buffer_lvl ) ) ; } } } } else cpi -> twopass . kf_group_bits = 0 ; reset_fpf_position ( cpi , start_position ) ; decay_accumulator = 1.0 ; <S2SV_StartBug> boost_score = 0.0 ; <S2SV_EndBug> loop_decay_rate = 1.00 ; for ( i = 0 ; i < cpi -> twopass . frames_to_key ; i ++ ) { double r ; if ( EOF == input_stats ( cpi , & next_frame ) ) break ; if ( next_frame . intra_error > cpi -> twopass . kf_intra_err_min ) r = ( IIKFACTOR2 * next_frame . intra_error / DOUBLE_DIVIDE_CHECK ( next_frame . coded_error ) ) ; else r = ( IIKFACTOR2 * cpi -> twopass . kf_intra_err_min / DOUBLE_DIVIDE_CHECK ( next_frame . coded_error ) ) ; if ( r > RMAX ) r = RMAX ; loop_decay_rate = get_prediction_decay_rate ( cpi , & next_frame ) ; decay_accumulator = decay_accumulator * loop_decay_rate ; decay_accumulator = decay_accumulator < 0.1 ? 0.1 : decay_accumulator ; boost_score += ( decay_accumulator * r ) ; if ( ( i > MIN_GF_INTERVAL ) && ( ( boost_score - old_boost_score ) < 1.0 ) ) { break ; } old_boost_score = boost_score ; } if ( 1 ) { FIRSTPASS_STATS sectionstats ; double Ratio ; zero_stats ( & sectionstats ) ; reset_fpf_position ( cpi , start_position ) ; for ( i = 0 ; i < cpi -> twopass . frames_to_key ; i ++ ) { input_stats ( cpi , & next_frame ) ; accumulate_stats ( & sectionstats , & next_frame ) ; } avg_stats ( & sectionstats ) ; cpi -> twopass . section_intra_rating = ( unsigned int ) ( sectionstats . intra_error / DOUBLE_DIVIDE_CHECK ( sectionstats . coded_error ) ) ; Ratio = sectionstats . intra_error / DOUBLE_DIVIDE_CHECK ( sectionstats . coded_error ) ; cpi -> twopass . section_max_qfactor = 1.0 - ( ( Ratio - 10.0 ) * 0.025 ) ; if ( cpi -> twopass . section_max_qfactor < 0.80 ) cpi -> twopass . section_max_qfactor = 0.80 ; } if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { double max_boost ; if ( cpi -> drop_frames_allowed ) { int df_buffer_level = ( int ) ( cpi -> oxcf . drop_frames_water_mark * ( cpi -> oxcf . optimal_buffer_level / 100 ) ) ; if ( cpi -> buffer_level > df_buffer_level ) max_boost = ( ( double ) ( ( cpi -> buffer_level - df_buffer_level ) * 2 / 3 ) * 16.0 ) / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> av_per_frame_bandwidth ) ; else max_boost = 0.0 ; } else if ( cpi -> buffer_level > 0 ) { max_boost = ( ( double ) ( cpi -> buffer_level * 2 / 3 ) * 16.0 ) / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> av_per_frame_bandwidth ) ; } else { max_boost = 0.0 ; } if ( boost_score > max_boost ) boost_score = max_boost ; } reset_fpf_position ( cpi , start_position ) ; if ( 1 ) { int kf_boost = ( int ) boost_score ; int allocation_chunks ; int Counter = cpi -> twopass . frames_to_key ; int alt_kf_bits ; YV12_BUFFER_CONFIG * lst_yv12 = & cpi -> common . yv12_fb [ cpi -> common . lst_fb_idx ] ; # if 0 while ( ( kf_boost < 48 ) && ( Counter > 0 ) ) { Counter -= 2 ; kf_boost ++ ; } # endif if ( kf_boost < 48 ) { kf_boost += ( ( Counter + 1 ) >> 1 ) ; if ( kf_boost > 48 ) kf_boost = 48 ; } if ( ( lst_yv12 -> y_width * lst_yv12 -> y_height ) > ( 320 * 240 ) ) kf_boost += 2 * ( lst_yv12 -> y_width * lst_yv12 -> y_height ) / ( 320 * 240 ) ; else if ( ( lst_yv12 -> y_width * lst_yv12 -> y_height ) < ( 320 * 240 ) ) kf_boost -= 4 * ( 320 * 240 ) / ( lst_yv12 -> y_width * lst_yv12 -> y_height ) ; kf_boost = ( int ) ( ( double ) kf_boost * 100.0 ) >> 4 ; if ( kf_boost < 250 ) kf_boost = 250 ; if ( decay_accumulator >= 0.99 ) { allocation_chunks = ( ( cpi -> twopass . frames_to_key - 1 ) * 10 ) + kf_boost ; } else { allocation_chunks = ( ( cpi -> twopass . frames_to_key - 1 ) * 100 ) + kf_boost ; } while ( kf_boost > 1000 ) { kf_boost /= 2 ; allocation_chunks /= 2 ; } cpi -> twopass . kf_group_bits = ( cpi -> twopass . kf_group_bits < 0 ) ? 0 : cpi -> twopass . kf_group_bits ; cpi -> twopass . kf_bits = ( int ) ( ( double ) kf_boost * ( ( double ) cpi -> twopass . kf_group_bits / ( double ) allocation_chunks ) ) ; if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { if ( cpi -> twopass . kf_bits > ( int ) ( ( 3 * cpi -> buffer_level ) >> 2 ) ) cpi -> twopass . kf_bits = ( int ) ( ( 3 * cpi -> buffer_level ) >> 2 ) ; } if ( kf_mod_err < kf_group_err / cpi -> twopass . frames_to_key ) { double alt_kf_grp_bits = ( ( double ) cpi -> twopass . bits_left * ( kf_mod_err * ( double ) cpi -> twopass . frames_to_key ) / DOUBLE_DIVIDE_CHECK ( cpi -> twopass . modified_error_left ) ) ; alt_kf_bits = ( int ) ( ( double ) kf_boost * ( alt_kf_grp_bits / ( double ) allocation_chunks ) ) ; if ( cpi -> twopass . kf_bits > alt_kf_bits ) { cpi -> twopass . kf_bits = alt_kf_bits ; } } else { alt_kf_bits = ( int ) ( ( double ) cpi -> twopass . bits_left * ( kf_mod_err / DOUBLE_DIVIDE_CHECK ( cpi -> twopass . modified_error_left ) ) ) ; if ( alt_kf_bits > cpi -> twopass . kf_bits ) { cpi -> twopass . kf_bits = alt_kf_bits ; } } cpi -> twopass . kf_group_bits -= cpi -> twopass . kf_bits ; cpi -> twopass . kf_bits += cpi -> min_frame_bandwidth ; cpi -> per_frame_bandwidth = cpi -> twopass . kf_bits ; cpi -> target_bandwidth = ( int ) ( cpi -> twopass . kf_bits * cpi -> output_framerate ) ; } cpi -> twopass . kf_group_error_left = ( int ) ( kf_group_err - kf_mod_err ) ; cpi -> twopass . modified_error_left -= kf_group_err ; if ( cpi -> oxcf . allow_spatial_resampling ) { int resample_trigger = 0 ; int last_kf_resampled = 0 ; int kf_q ; int scale_val = 0 ; int hr , hs , vr , vs ; int new_width = cpi -> oxcf . Width ; int new_height = cpi -> oxcf . Height ; <S2SV_StartBug> int projected_buffer_level = ( int ) cpi -> buffer_level ; <S2SV_EndBug> int tmp_q ; double projected_bits_perframe ; double group_iiratio = ( kf_group_intra_err - first_frame . intra_error ) / ( kf_group_coded_err - first_frame . coded_error ) ; double err_per_frame = kf_group_err / cpi -> twopass . frames_to_key ; double bits_per_frame ; double av_bits_per_frame ; double effective_size_ratio ; if ( ( cpi -> common . Width != cpi -> oxcf . Width ) || ( cpi -> common . Height != cpi -> oxcf . Height ) ) last_kf_resampled = 1 ; cpi -> common . horiz_scale = NORMAL ; cpi -> common . vert_scale = NORMAL ; av_bits_per_frame = cpi -> oxcf . target_bandwidth / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> framerate ) ; if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { bits_per_frame = av_bits_per_frame ; } else { bits_per_frame = ( double ) ( cpi -> twopass . kf_group_bits / cpi -> twopass . frames_to_key ) ; if ( bits_per_frame < av_bits_per_frame ) bits_per_frame = av_bits_per_frame ; } if ( bits_per_frame < ( cpi -> oxcf . target_bandwidth * cpi -> oxcf . two_pass_vbrmin_section / 100 ) ) bits_per_frame = ( cpi -> oxcf . target_bandwidth * cpi -> oxcf . two_pass_vbrmin_section / 100 ) ; kf_q = estimate_kf_group_q ( cpi , err_per_frame , ( int ) bits_per_frame , group_iiratio ) ; projected_bits_perframe = bits_per_frame ; tmp_q = kf_q ; while ( tmp_q > cpi -> worst_quality ) { projected_bits_perframe *= 1.04 ; tmp_q -- ; } projected_buffer_level = ( int ) ( cpi -> buffer_level - ( int ) ( ( projected_bits_perframe - av_bits_per_frame ) * cpi -> twopass . frames_to_key ) ) ; if ( 0 ) { FILE * f = fopen ( \"Subsamle.stt\" , \"a\" ) ; fprintf ( f , \"<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%12.0f<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%8d\\\\n\" , cpi -> common . current_video_frame , kf_q , cpi -> common . horiz_scale , cpi -> common . vert_scale , kf_group_err / cpi -> twopass . frames_to_key , ( int ) ( cpi -> twopass . kf_group_bits / cpi -> twopass . frames_to_key ) , new_height , new_width ) ; fclose ( f ) ; } if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { if ( ( projected_buffer_level < ( cpi -> oxcf . resample_down_water_mark * cpi -> oxcf . optimal_buffer_level / 100 ) ) || ( last_kf_resampled && ( projected_buffer_level < ( cpi -> oxcf . resample_up_water_mark * cpi -> oxcf . optimal_buffer_level / 100 ) ) ) ) resample_trigger = 1 ; else resample_trigger = 0 ; } else { int64_t clip_bits = ( int64_t ) ( cpi -> twopass . total_stats . count * cpi -> oxcf . target_bandwidth / DOUBLE_DIVIDE_CHECK ( ( double ) cpi -> framerate ) ) ; int64_t over_spend = cpi -> oxcf . starting_buffer_level - cpi -> buffer_level ; if ( ( last_kf_resampled && ( kf_q > cpi -> worst_quality ) ) || ( ( kf_q > cpi -> worst_quality ) && ( over_spend > clip_bits / 20 ) ) ) resample_trigger = 1 ; else resample_trigger = 0 ; } if ( resample_trigger ) { while ( ( kf_q >= cpi -> worst_quality ) && ( scale_val < 6 ) ) { scale_val ++ ; cpi -> common . vert_scale = vscale_lookup [ scale_val ] ; cpi -> common . horiz_scale = hscale_lookup [ scale_val ] ; Scale2Ratio ( cpi -> common . horiz_scale , & hr , & hs ) ; Scale2Ratio ( cpi -> common . vert_scale , & vr , & vs ) ; new_width = ( ( hs - 1 ) + ( cpi -> oxcf . Width * hr ) ) / hs ; new_height = ( ( vs - 1 ) + ( cpi -> oxcf . Height * vr ) ) / vs ; effective_size_ratio = ( double ) ( new_width * new_height ) / ( double ) ( cpi -> oxcf . Width * cpi -> oxcf . Height ) ; effective_size_ratio = ( 1.0 + ( 3.0 * effective_size_ratio ) ) / 4.0 ; kf_q = estimate_kf_group_q ( cpi , err_per_frame * effective_size_ratio , ( int ) bits_per_frame , group_iiratio ) ; if ( 0 ) { FILE * f = fopen ( \"Subsamle.stt\" , \"a\" ) ; fprintf ( f , \"********<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%12.0f<S2SV_blank>%8d<S2SV_blank>%8d<S2SV_blank>%8d\\\\n\" , kf_q , cpi -> common . horiz_scale , cpi -> common . vert_scale , kf_group_err / cpi -> twopass . frames_to_key , ( int ) ( cpi -> twopass . kf_group_bits / cpi -> twopass . frames_to_key ) , new_height , new_width ) ; fclose ( f ) ; } } } if ( ( cpi -> common . Width != new_width ) || ( cpi -> common . Height != new_height ) ) { cpi -> common . Width = new_width ; cpi -> common . Height = new_height ; vp8_alloc_compressor_data ( cpi ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1.0 } ; memset <S2SV_ModEnd> ( & next_frame <S2SV_ModStart> = 1 ; memcpy <S2SV_ModEnd> ( & first_frame <S2SV_ModStart> -> coded_error ; memcpy <S2SV_ModEnd> ( & last_frame <S2SV_ModStart> /= 2 ; memcpy <S2SV_ModEnd> ( & tmp_frame <S2SV_ModStart> boost_score = 0.0 <S2SV_ModEnd> ; for ( <S2SV_ModStart> ; int projected_buffer_level <S2SV_ModEnd> ; int tmp_q\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9990\n\n```\nCWE-119 static int xpm_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { XPMDecContext * x = avctx -> priv_data ; AVFrame * p = data ; <S2SV_StartBug> const uint8_t * end , * ptr = avpkt -> data ; <S2SV_EndBug> int ncolors , cpp , ret , i , j ; int64_t size ; uint32_t * dst ; avctx -> pix_fmt = AV_PIX_FMT_BGRA ; <S2SV_StartBug> end = avpkt -> data + avpkt -> size ; <S2SV_EndBug> <S2SV_StartBug> while ( memcmp ( ptr , \"/*<S2SV_blank>XPM<S2SV_blank>*/\" , 9 ) && ptr < end - 9 ) <S2SV_EndBug> ptr ++ ; if ( ptr >= end ) { av_log ( avctx , AV_LOG_ERROR , \"missing<S2SV_blank>signature\\\\n\" ) ; return AVERROR_INVALIDDATA ; } ptr += mod_strcspn ( ptr , \"\\\\\"\" ) ; if ( sscanf ( ptr , \"\\\\\"%u<S2SV_blank>%u<S2SV_blank>%u<S2SV_blank>%u\\\\\",\" , & avctx -> width , & avctx -> height , & ncolors , & cpp ) != 4 ) { av_log ( avctx , AV_LOG_ERROR , \"missing<S2SV_blank>image<S2SV_blank>parameters\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( ( ret = ff_set_dimensions ( avctx , avctx -> width , avctx -> height ) ) < 0 ) return ret ; if ( ( ret = ff_get_buffer ( avctx , p , 0 ) ) < 0 ) return ret ; if ( cpp <= 0 || cpp >= 5 ) { av_log ( avctx , AV_LOG_ERROR , \"unsupported/invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>chars<S2SV_blank>per<S2SV_blank>pixel:<S2SV_blank>%d\\\\n\" , cpp ) ; return AVERROR_INVALIDDATA ; } size = 1 ; for ( i = 0 ; i < cpp ; i ++ ) <S2SV_StartBug> size *= 94 ; <S2SV_EndBug> if ( ncolors <= 0 || ncolors > size ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>colors:<S2SV_blank>%d\\\\n\" , ncolors ) ; return AVERROR_INVALIDDATA ; } size *= 4 ; av_fast_padded_malloc ( & x -> pixels , & x -> pixels_size , size ) ; if ( ! x -> pixels ) return AVERROR ( ENOMEM ) ; ptr += mod_strcspn ( ptr , \",\" ) + 1 ; <S2SV_StartBug> for ( i = 0 ; i < ncolors ; i ++ ) { <S2SV_EndBug> const uint8_t * index ; int len ; ptr += mod_strcspn ( ptr , \"\\\\\"\" ) + 1 ; <S2SV_StartBug> if ( ptr + cpp > end ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; index = ptr ; ptr += cpp ; ptr = strstr ( ptr , \"c<S2SV_blank>\" ) ; if ( ptr ) { ptr += 2 ; } else { return AVERROR_INVALIDDATA ; } len = strcspn ( ptr , \"\\\\\"<S2SV_blank>\" ) ; if ( ( ret = ascii2index ( index , cpp ) ) < 0 ) return ret ; x -> pixels [ ret ] = color_string_to_rgba ( ptr , len ) ; ptr += mod_strcspn ( ptr , \",\" ) + 1 ; <S2SV_StartBug> } <S2SV_EndBug> for ( i = 0 ; i < avctx -> height ; i ++ ) { dst = ( uint32_t * ) ( p -> data [ 0 ] + i * p -> linesize [ 0 ] ) ; <S2SV_StartBug> ptr += mod_strcspn ( ptr , \"\\\\\"\" ) + 1 ; <S2SV_EndBug> <S2SV_StartBug> for ( j = 0 ; j < avctx -> width ; j ++ ) { <S2SV_EndBug> <S2SV_StartBug> if ( ptr + cpp > end ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; if ( ( ret = ascii2index ( ptr , cpp ) ) < 0 ) return ret ; * dst ++ = x -> pixels [ ret ] ; ptr += cpp ; } ptr += mod_strcspn ( ptr , \",\" ) + 1 ; } p -> key_frame = 1 ; p -> pict_type = AV_PICTURE_TYPE_I ; * got_frame = 1 ; return avpkt -> size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * ptr <S2SV_ModEnd> ; int ncolors <S2SV_ModStart> = AV_PIX_FMT_BGRA ; av_fast_padded_malloc ( & x -> buf , & x -> buf_size , avpkt -> size ) ; if ( ! x -> buf ) return AVERROR ( ENOMEM ) ; memcpy ( x -> buf , avpkt -> data , avpkt -> size ) ; x -> buf [ avpkt -> size ] = 0 ; ptr = x -> buf ; end = x -> buf <S2SV_ModEnd> + avpkt -> <S2SV_ModStart> ; while ( end - ptr > 9 && <S2SV_ModStart> , 9 ) ) ptr ++ ; if ( end - ptr <= 9 <S2SV_ModEnd> ) { av_log <S2SV_ModStart> ) size *= 95 <S2SV_ModEnd> ; if ( <S2SV_ModStart> + 1 ; if ( end - ptr < 1 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ; if ( end - ptr < cpp <S2SV_ModEnd> ) return AVERROR_INVALIDDATA <S2SV_ModStart> + 1 ; if ( end - ptr < 1 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ] ) ; if ( end - ptr < 1 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> + 1 ; if ( end - ptr < 1 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> { if ( end - ptr < cpp <S2SV_ModEnd> ) return AVERROR_INVALIDDATA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3698\n\n```\nCWE-284 static int myrecvfrom6 ( int sockfd , void * buf , size_t * buflen , int flags , <S2SV_StartBug> struct in6_addr * addr , uint32_t * ifindex ) <S2SV_EndBug> { struct sockaddr_in6 sin6 ; <S2SV_StartBug> unsigned char cbuf [ CMSG_SPACE ( sizeof ( struct in6_pktinfo ) ) ] ; <S2SV_EndBug> struct iovec iovec ; struct msghdr msghdr ; struct cmsghdr * cmsghdr ; ssize_t len ; iovec . iov_len = * buflen ; iovec . iov_base = buf ; memset ( & msghdr , 0 , sizeof ( msghdr ) ) ; msghdr . msg_name = & sin6 ; msghdr . msg_namelen = sizeof ( sin6 ) ; msghdr . msg_iov = & iovec ; msghdr . msg_iovlen = 1 ; msghdr . msg_control = cbuf ; msghdr . msg_controllen = sizeof ( cbuf ) ; len = recvmsg ( sockfd , & msghdr , flags ) ; if ( len == - 1 ) return - errno ; * buflen = len ; * ifindex = sin6 . sin6_scope_id ; for ( cmsghdr = CMSG_FIRSTHDR ( & msghdr ) ; cmsghdr ; cmsghdr = CMSG_NXTHDR ( & msghdr , cmsghdr ) ) { <S2SV_StartBug> if ( cmsghdr -> cmsg_level == IPPROTO_IPV6 && <S2SV_EndBug> <S2SV_StartBug> cmsghdr -> cmsg_type == IPV6_PKTINFO && <S2SV_EndBug> cmsghdr -> cmsg_len == CMSG_LEN ( sizeof ( struct in6_pktinfo ) ) ) { struct in6_pktinfo * pktinfo ; pktinfo = ( struct in6_pktinfo * ) CMSG_DATA ( cmsghdr ) ; * ifindex = pktinfo -> ipi6_ifindex ; } <S2SV_StartBug> } <S2SV_EndBug> * addr = sin6 . sin6_addr ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t * ifindex , int * hoplimit <S2SV_ModStart> char cbuf [ 2 * <S2SV_ModStart> cmsghdr -> cmsg_level != IPPROTO_IPV6 ) continue ; switch ( <S2SV_ModEnd> cmsghdr -> cmsg_type <S2SV_ModStart> cmsghdr -> cmsg_type ) { case IPV6_PKTINFO : if ( <S2SV_ModEnd> cmsghdr -> cmsg_len <S2SV_ModStart> ipi6_ifindex ; } break ; case IPV6_HOPLIMIT : if ( cmsghdr -> cmsg_len == CMSG_LEN ( sizeof ( int ) ) ) { int * val ; val = ( int * ) CMSG_DATA ( cmsghdr ) ; * hoplimit = * val ; } break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3375\n\n```\nCWE-000 SYSCALL_DEFINE4 ( epoll_ctl , int , epfd , int , op , int , fd , struct epoll_event __user * , event ) { int error ; int did_lock_epmutex = 0 ; struct file * file , * tfile ; struct eventpoll * ep ; struct epitem * epi ; struct epoll_event epds ; error = - EFAULT ; if ( ep_op_has_event ( op ) && copy_from_user ( & epds , event , sizeof ( struct epoll_event ) ) ) goto error_return ; error = - EBADF ; file = fget ( epfd ) ; if ( ! file ) goto error_return ; tfile = fget ( fd ) ; if ( ! tfile ) goto error_fput ; error = - EPERM ; if ( ! tfile -> f_op || ! tfile -> f_op -> poll ) goto error_tgt_fput ; error = - EINVAL ; if ( file == tfile || ! is_file_epoll ( file ) ) goto error_tgt_fput ; ep = file -> private_data ; if ( op == EPOLL_CTL_ADD || op == EPOLL_CTL_DEL ) { mutex_lock ( & epmutex ) ; did_lock_epmutex = 1 ; } if ( op == EPOLL_CTL_ADD ) { if ( is_file_epoll ( tfile ) ) { error = - ELOOP ; <S2SV_StartBug> if ( ep_loop_check ( ep , tfile ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> goto error_tgt_fput ; <S2SV_EndBug> } else list_add ( & tfile -> f_tfile_llink , & tfile_check_list ) ; } mutex_lock_nested ( & ep -> mtx , 0 ) ; epi = ep_find ( ep , tfile , fd ) ; error = - EINVAL ; switch ( op ) { case EPOLL_CTL_ADD : if ( ! epi ) { epds . events |= POLLERR | POLLHUP ; error = ep_insert ( ep , & epds , tfile , fd ) ; } else error = - EEXIST ; clear_tfile_check_list ( ) ; break ; case EPOLL_CTL_DEL : if ( epi ) error = ep_remove ( ep , epi ) ; else error = - ENOENT ; break ; case EPOLL_CTL_MOD : if ( epi ) { epds . events |= POLLERR | POLLHUP ; error = ep_modify ( ep , epi , & epds ) ; } else error = - ENOENT ; break ; } mutex_unlock ( & ep -> mtx ) ; error_tgt_fput : if ( did_lock_epmutex ) mutex_unlock ( & epmutex ) ; fput ( tfile ) ; error_fput : fput ( file ) ; error_return : return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != 0 ) { clear_tfile_check_list ( ) ; <S2SV_ModStart> goto error_tgt_fput ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2007-6761\n\n```\nCWE-119 static void videobuf_vm_open ( struct vm_area_struct * vma ) { struct videobuf_mapping * map = vma -> vm_private_data ; <S2SV_StartBug> dprintk ( 2 , \"vm_open<S2SV_blank>%p<S2SV_blank>[count=%d,vma=%08lx-%08lx]\\\\n\" , map , <S2SV_EndBug> map -> count , vma -> vm_start , vma -> vm_end ) ; map -> count ++ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 2 , \"vm_open<S2SV_blank>%p<S2SV_blank>[count=%u,vma=%08lx-%08lx]\\\\n\" <S2SV_ModEnd> , map ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5332\n\n```\nCWE-119 int mlx4_register_mac ( struct mlx4_dev * dev , u8 port , u64 mac , int * index ) { struct mlx4_mac_table * table = & mlx4_priv ( dev ) -> port [ port ] . mac_table ; int i , err = 0 ; int free = - 1 ; mlx4_dbg ( dev , \"Registering<S2SV_blank>MAC:<S2SV_blank>0x%llx\\\\n\" , ( unsigned long long ) mac ) ; mutex_lock ( & table -> mutex ) ; for ( i = 0 ; i < MLX4_MAX_MAC_NUM - 1 ; i ++ ) { if ( free < 0 && ! table -> refs [ i ] ) { free = i ; continue ; } if ( mac == ( MLX4_MAC_MASK & be64_to_cpu ( table -> entries [ i ] ) ) ) { * index = i ; ++ table -> refs [ i ] ; goto out ; } } <S2SV_StartBug> mlx4_dbg ( dev , \"Free<S2SV_blank>MAC<S2SV_blank>index<S2SV_blank>is<S2SV_blank>%d\\\\n\" , free ) ; <S2SV_EndBug> if ( table -> total == table -> max ) { err = - ENOSPC ; goto out ; } table -> refs [ free ] = 1 ; table -> entries [ free ] = cpu_to_be64 ( mac | MLX4_MAC_VALID ) ; err = mlx4_set_port_mac_table ( dev , port , table -> entries ) ; if ( unlikely ( err ) ) { mlx4_err ( dev , \"Failed<S2SV_blank>adding<S2SV_blank>MAC:<S2SV_blank>0x%llx\\\\n\" , ( unsigned long long ) mac ) ; table -> refs [ free ] = 0 ; table -> entries [ free ] = 0 ; goto out ; } * index = free ; ++ table -> total ; out : mutex_unlock ( & table -> mutex ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( free < 0 ) { err = - ENOMEM ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 static bool parse_cmdline ( int argc , char * * argv ) { int c ; bool reopen_log = false ; int signum ; struct utsname uname_buf ; int longindex ; int curind ; bool bad_option = false ; <S2SV_StartBug> unsigned facility ; <S2SV_EndBug> struct option long_options [ ] = { { \"use-file\" , required_argument , NULL , 'f' } , # if defined _WITH_VRRP_ && defined _WITH_LVS_ { \"vrrp\" , no_argument , NULL , 'P' } , { \"check\" , no_argument , NULL , 'C' } , # endif # ifdef _WITH_BFD_ { \"no_bfd\" , no_argument , NULL , 'B' } , # endif { \"all\" , no_argument , NULL , 3 } , { \"log-console\" , no_argument , NULL , 'l' } , { \"log-detail\" , no_argument , NULL , 'D' } , { \"log-facility\" , required_argument , NULL , 'S' } , { \"log-file\" , optional_argument , NULL , 'g' } , { \"flush-log-file\" , no_argument , NULL , 2 } , { \"no-syslog\" , no_argument , NULL , 'G' } , <S2SV_StartBug> # ifdef _WITH_VRRP_ <S2SV_EndBug> { \"release-vips\" , no_argument , NULL , 'X' } , { \"dont-release-vrrp\" , no_argument , NULL , 'V' } , # endif # ifdef _WITH_LVS_ { \"dont-release-ipvs\" , no_argument , NULL , 'I' } , # endif { \"dont-respawn\" , no_argument , NULL , 'R' } , { \"dont-fork\" , no_argument , NULL , 'n' } , { \"dump-conf\" , no_argument , NULL , 'd' } , { \"pid\" , required_argument , NULL , 'p' } , # ifdef _WITH_VRRP_ { \"vrrp_pid\" , required_argument , NULL , 'r' } , # endif # ifdef _WITH_LVS_ { \"checkers_pid\" , required_argument , NULL , 'c' } , { \"address-monitoring\" , no_argument , NULL , 'a' } , # endif # ifdef _WITH_BFD_ { \"bfd_pid\" , required_argument , NULL , 'b' } , # endif # ifdef _WITH_SNMP_ { \"snmp\" , no_argument , NULL , 'x' } , { \"snmp-agent-socket\" , required_argument , NULL , 'A' } , # endif { \"core-dump\" , no_argument , NULL , 'm' } , { \"core-dump-pattern\" , optional_argument , NULL , 'M' } , # ifdef _MEM_CHECK_LOG_ { \"mem-check-log\" , no_argument , NULL , 'L' } , # endif # if HAVE_DECL_CLONE_NEWNET { \"namespace\" , required_argument , NULL , 's' } , # endif { \"config-id\" , required_argument , NULL , 'i' } , { \"signum\" , required_argument , NULL , 4 } , { \"config-test\" , optional_argument , NULL , 't' } , # ifdef _WITH_PERF_ { \"perf\" , optional_argument , NULL , 5 } , # endif # ifdef WITH_DEBUG_OPTIONS { \"debug\" , optional_argument , NULL , 6 } , # endif { \"version\" , no_argument , NULL , 'v' } , { \"help\" , no_argument , NULL , 'h' } , { NULL , 0 , NULL , 0 } } ; curind = optind ; <S2SV_StartBug> while ( longindex = - 1 , ( c = getopt_long ( argc , argv , \":vhlndDRS:f:p:i:mM::g::Gt::\" <S2SV_EndBug> # if defined _WITH_VRRP_ && defined _WITH_LVS_ \"PC\" # endif # ifdef _WITH_VRRP_ \"r:VX\" # endif # ifdef _WITH_LVS_ \"ac:I\" # endif # ifdef _WITH_BFD_ \"Bb:\" # endif # ifdef _WITH_SNMP_ \"xA:\" # endif # ifdef _MEM_CHECK_LOG_ \"L\" # endif # if HAVE_DECL_CLONE_NEWNET \"s:\" # endif , long_options , & longindex ) ) != - 1 ) { if ( longindex >= 0 && long_options [ longindex ] . has_arg == required_argument && optarg && ! optarg [ 0 ] ) { c = ':' ; optarg = NULL ; } switch ( c ) { case 'v' : fprintf ( stderr , \"%s\" , version_string ) ; # ifdef GIT_COMMIT fprintf ( stderr , \",<S2SV_blank>git<S2SV_blank>commit<S2SV_blank>%s\" , GIT_COMMIT ) ; # endif fprintf ( stderr , \"\\\\n\\\\n%s\\\\n\\\\n\" , COPYRIGHT_STRING ) ; fprintf ( stderr , \"Built<S2SV_blank>with<S2SV_blank>kernel<S2SV_blank>headers<S2SV_blank>for<S2SV_blank>Linux<S2SV_blank>%d.%d.%d\\\\n\" , ( LINUX_VERSION_CODE >> 16 ) & 0xff , ( LINUX_VERSION_CODE >> 8 ) & 0xff , ( LINUX_VERSION_CODE ) & 0xff ) ; uname ( & uname_buf ) ; fprintf ( stderr , \"Running<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\\\\n\" , uname_buf . sysname , uname_buf . release , uname_buf . version ) ; fprintf ( stderr , \"configure<S2SV_blank>options:<S2SV_blank>%s\\\\n\\\\n\" , KEEPALIVED_CONFIGURE_OPTIONS ) ; fprintf ( stderr , \"Config<S2SV_blank>options:<S2SV_blank>%s\\\\n\\\\n\" , CONFIGURATION_OPTIONS ) ; fprintf ( stderr , \"System<S2SV_blank>options:<S2SV_blank>%s\\\\n\" , SYSTEM_OPTIONS ) ; exit ( 0 ) ; break ; case 'h' : usage ( argv [ 0 ] ) ; exit ( 0 ) ; break ; case 'l' : __set_bit ( LOG_CONSOLE_BIT , & debug ) ; reopen_log = true ; break ; case 'n' : __set_bit ( DONT_FORK_BIT , & debug ) ; break ; case 'd' : __set_bit ( DUMP_CONF_BIT , & debug ) ; break ; # ifdef _WITH_VRRP_ case 'V' : __set_bit ( DONT_RELEASE_VRRP_BIT , & debug ) ; break ; # endif # ifdef _WITH_LVS_ case 'I' : __set_bit ( DONT_RELEASE_IPVS_BIT , & debug ) ; break ; # endif case 'D' : if ( __test_bit ( LOG_DETAIL_BIT , & debug ) ) __set_bit ( LOG_EXTRA_DETAIL_BIT , & debug ) ; else __set_bit ( LOG_DETAIL_BIT , & debug ) ; break ; case 'R' : __set_bit ( DONT_RESPAWN_BIT , & debug ) ; break ; # ifdef _WITH_VRRP_ case 'X' : __set_bit ( RELEASE_VIPS_BIT , & debug ) ; break ; # endif case 'S' : if ( ! read_unsigned ( optarg , & facility , 0 , LOG_FACILITY_MAX , false ) ) fprintf ( stderr , \"Invalid<S2SV_blank>log<S2SV_blank>facility<S2SV_blank>\\'%s\\'\\\\n\" , optarg ) ; else { log_facility = LOG_FACILITY [ facility ] . facility ; reopen_log = true ; } break ; case 'g' : if ( optarg && optarg [ 0 ] ) log_file_name = optarg ; else log_file_name = \"/tmp/keepalived.log\" ; open_log_file ( log_file_name , NULL , NULL , NULL ) ; break ; case 'G' : __set_bit ( NO_SYSLOG_BIT , & debug ) ; reopen_log = true ; break ; <S2SV_StartBug> case 't' : <S2SV_EndBug> __set_bit ( CONFIG_TEST_BIT , & debug ) ; __set_bit ( DONT_RESPAWN_BIT , & debug ) ; __set_bit ( DONT_FORK_BIT , & debug ) ; __set_bit ( NO_SYSLOG_BIT , & debug ) ; if ( optarg && optarg [ 0 ] ) { int fd = open ( optarg , O_WRONLY | O_APPEND | O_CREAT , S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ) ; if ( fd == - 1 ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>config-test<S2SV_blank>log<S2SV_blank>file<S2SV_blank>%s\\\\n\" , optarg ) ; exit ( EXIT_FAILURE ) ; } dup2 ( fd , STDERR_FILENO ) ; close ( fd ) ; } break ; case 'f' : conf_file = optarg ; break ; case 2 : set_flush_log_file ( ) ; break ; # if defined _WITH_VRRP_ && defined _WITH_LVS_ case 'P' : __clear_bit ( DAEMON_CHECKERS , & daemon_mode ) ; break ; case 'C' : __clear_bit ( DAEMON_VRRP , & daemon_mode ) ; break ; # endif # ifdef _WITH_BFD_ case 'B' : __clear_bit ( DAEMON_BFD , & daemon_mode ) ; break ; # endif case 'p' : main_pidfile = optarg ; break ; # ifdef _WITH_LVS_ case 'c' : checkers_pidfile = optarg ; break ; case 'a' : __set_bit ( LOG_ADDRESS_CHANGES , & debug ) ; break ; # endif # ifdef _WITH_VRRP_ case 'r' : vrrp_pidfile = optarg ; break ; # endif # ifdef _WITH_BFD_ case 'b' : bfd_pidfile = optarg ; break ; # endif # ifdef _WITH_SNMP_ case 'x' : snmp = 1 ; break ; case 'A' : snmp_socket = optarg ; break ; # endif case 'M' : set_core_dump_pattern = true ; if ( optarg && optarg [ 0 ] ) core_dump_pattern = optarg ; case 'm' : create_core_dump = true ; break ; # ifdef _MEM_CHECK_LOG_ case 'L' : __set_bit ( MEM_CHECK_LOG_BIT , & debug ) ; break ; # endif # if HAVE_DECL_CLONE_NEWNET case 's' : override_namespace = MALLOC ( strlen ( optarg ) + 1 ) ; strcpy ( override_namespace , optarg ) ; break ; # endif case 'i' : FREE_PTR ( config_id ) ; config_id = MALLOC ( strlen ( optarg ) + 1 ) ; strcpy ( config_id , optarg ) ; break ; case 4 : signum = get_signum ( optarg ) ; if ( signum == - 1 ) { fprintf ( stderr , \"Unknown<S2SV_blank>sigfunc<S2SV_blank>%s\\\\n\" , optarg ) ; exit ( 1 ) ; } printf ( \"%d\\\\n\" , signum ) ; exit ( 0 ) ; break ; case 3 : __set_bit ( RUN_ALL_CHILDREN , & daemon_mode ) ; # ifdef _WITH_VRRP_ __set_bit ( DAEMON_VRRP , & daemon_mode ) ; # endif # ifdef _WITH_LVS_ __set_bit ( DAEMON_CHECKERS , & daemon_mode ) ; # endif # ifdef _WITH_BFD_ __set_bit ( DAEMON_BFD , & daemon_mode ) ; # endif break ; # ifdef _WITH_PERF_ case 5 : if ( optarg && optarg [ 0 ] ) { if ( ! strcmp ( optarg , \"run\" ) ) perf_run = PERF_RUN ; else if ( ! strcmp ( optarg , \"all\" ) ) perf_run = PERF_ALL ; else if ( ! strcmp ( optarg , \"end\" ) ) perf_run = PERF_END ; else log_message ( LOG_INFO , \"Unknown<S2SV_blank>perf<S2SV_blank>start<S2SV_blank>point<S2SV_blank>%s\" , optarg ) ; } else perf_run = PERF_RUN ; break ; # endif # ifdef WITH_DEBUG_OPTIONS case 6 : set_debug_options ( optarg && optarg [ 0 ] ? optarg : NULL ) ; break ; # endif case '?' : if ( optopt && argv [ curind ] [ 1 ] != '-' ) fprintf ( stderr , \"Unknown<S2SV_blank>option<S2SV_blank>-%c\\\\n\" , optopt ) ; else fprintf ( stderr , \"Unknown<S2SV_blank>option<S2SV_blank>%s\\\\n\" , argv [ curind ] ) ; bad_option = true ; break ; case ':' : if ( optopt && argv [ curind ] [ 1 ] != '-' ) fprintf ( stderr , \"Missing<S2SV_blank>parameter<S2SV_blank>for<S2SV_blank>option<S2SV_blank>-%c\\\\n\" , optopt ) ; else fprintf ( stderr , \"Missing<S2SV_blank>parameter<S2SV_blank>for<S2SV_blank>option<S2SV_blank>--%s\\\\n\" , long_options [ longindex ] . name ) ; bad_option = true ; break ; default : exit ( 1 ) ; break ; } curind = optind ; } if ( optind < argc ) { printf ( \"Unexpected<S2SV_blank>argument(s):<S2SV_blank>\" ) ; while ( optind < argc ) printf ( \"%s<S2SV_blank>\" , argv [ optind ++ ] ) ; printf ( \"\\\\n\" ) ; } if ( bad_option ) exit ( 1 ) ; return reopen_log ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned facility ; mode_t new_umask_val <S2SV_ModStart> 'G' } , { \"umask\" , required_argument , NULL , 'u' } , <S2SV_ModStart> , argv , \":vhlndu:DRS:f:p:i:mM::g::Gt::\" <S2SV_ModEnd> # if defined <S2SV_ModStart> break ; case 'u' : new_umask_val = set_umask ( optarg ) ; if ( umask_cmdline ) umask_val = new_umask_val ; break ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-000 static int crypto_report_akcipher ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_akcipher rakcipher ; <S2SV_StartBug> strlcpy ( rakcipher . type , \"akcipher\" , sizeof ( rakcipher . type ) ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_AKCIPHER , sizeof ( struct crypto_report_akcipher ) , & rakcipher ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_akcipher rakcipher ; strncpy <S2SV_ModEnd> ( rakcipher .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6978\n\n```\nCWE-415 void gdImageWBMPCtx ( gdImagePtr image , int fg , gdIOCtx * out ) { <S2SV_StartBug> int x , y , pos ; <S2SV_EndBug> Wbmp * wbmp ; if ( ( wbmp = createwbmp ( gdImageSX ( image ) , gdImageSY ( image ) , WBMP_WHITE ) ) == NULL ) { gd_error ( \"Could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>WBMP\" ) ; return ; } pos = 0 ; for ( y = 0 ; y < gdImageSY ( image ) ; y ++ ) { for ( x = 0 ; x < gdImageSX ( image ) ; x ++ ) { <S2SV_StartBug> if ( gdImageGetPixel ( image , x , y ) == fg ) { <S2SV_EndBug> wbmp -> bitmap [ pos ] = WBMP_BLACK ; } pos ++ ; } } if ( writewbmp ( wbmp , & gd_putout , out ) ) { gd_error ( \"Could<S2SV_blank>not<S2SV_blank>save<S2SV_blank>WBMP\" ) ; } freewbmp ( wbmp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ) { _gdImageWBMPCtx <S2SV_ModEnd> ( image , <S2SV_ModStart> ( image , fg , out <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_mbgraph_frame_stats ( VP9_COMP * cpi , MBGRAPH_FRAME_STATS * stats , YV12_BUFFER_CONFIG * buf , YV12_BUFFER_CONFIG * golden_ref , YV12_BUFFER_CONFIG * alt_ref ) { <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; VP9_COMMON * const cm = & cpi -> common ; int mb_col , mb_row , offset = 0 ; int mb_y_offset = 0 , arf_y_offset = 0 , gld_y_offset = 0 ; <S2SV_StartBug> int_mv arf_top_mv , gld_top_mv ; <S2SV_EndBug> <S2SV_StartBug> MODE_INFO mi_local = { { 0 } } ; <S2SV_EndBug> arf_top_mv . as_int = 0 ; gld_top_mv . as_int = 0 ; x -> mv_row_min = - BORDER_MV_PIXELS_B16 ; x -> mv_row_max = ( cm -> mb_rows - 1 ) * 8 + BORDER_MV_PIXELS_B16 ; xd -> up_available = 0 ; xd -> plane [ 0 ] . dst . stride = buf -> y_stride ; xd -> plane [ 0 ] . pre [ 0 ] . stride = buf -> y_stride ; xd -> plane [ 1 ] . dst . stride = buf -> uv_stride ; xd -> mi [ 0 ] = & mi_local ; mi_local . mbmi . sb_type = BLOCK_16X16 ; mi_local . mbmi . ref_frame [ 0 ] = LAST_FRAME ; mi_local . mbmi . ref_frame [ 1 ] = NONE ; for ( mb_row = 0 ; mb_row < cm -> mb_rows ; mb_row ++ ) { <S2SV_StartBug> int_mv arf_left_mv , gld_left_mv ; <S2SV_EndBug> int mb_y_in_offset = mb_y_offset ; int arf_y_in_offset = arf_y_offset ; <S2SV_StartBug> int gld_y_in_offset = gld_y_offset ; <S2SV_EndBug> arf_left_mv . as_int = arf_top_mv . as_int ; gld_left_mv . as_int = gld_top_mv . as_int ; x -> mv_col_min = - BORDER_MV_PIXELS_B16 ; x -> mv_col_max = ( cm -> mb_cols - 1 ) * 8 + BORDER_MV_PIXELS_B16 ; xd -> left_available = 0 ; for ( mb_col = 0 ; mb_col < cm -> mb_cols ; mb_col ++ ) { MBGRAPH_MB_STATS * mb_stats = & stats -> mb_stats [ offset + mb_col ] ; update_mbgraph_mb_stats ( cpi , mb_stats , buf , mb_y_in_offset , golden_ref , & gld_left_mv , alt_ref , mb_row , mb_col ) ; <S2SV_StartBug> arf_left_mv . as_int = mb_stats -> ref [ ALTREF_FRAME ] . m . mv . as_int ; <S2SV_EndBug> gld_left_mv . as_int = mb_stats -> ref [ GOLDEN_FRAME ] . m . mv . as_int ; if ( mb_col == 0 ) { arf_top_mv . as_int = arf_left_mv . as_int ; gld_top_mv . as_int = gld_left_mv . as_int ; } xd -> left_available = 1 ; mb_y_in_offset += 16 ; gld_y_in_offset += 16 ; arf_y_in_offset += 16 ; x -> mv_col_min -= 16 ; x -> mv_col_max -= 16 ; } xd -> up_available = 1 ; mb_y_offset += buf -> y_stride * 16 ; gld_y_offset += golden_ref -> y_stride * 16 ; if ( alt_ref ) arf_y_offset += alt_ref -> y_stride * 16 ; x -> mv_row_min -= 16 ; x -> mv_row_max -= 16 ; offset += cm -> mb_cols ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & cpi -> td . <S2SV_ModStart> = 0 ; MV gld_top_mv = { 0 , 0 } <S2SV_ModEnd> ; MODE_INFO mi_local <S2SV_ModStart> ; MODE_INFO mi_local ; vp9_zero ( mi_local ) <S2SV_ModEnd> ; x -> <S2SV_ModStart> ++ ) { MV gld_left_mv = gld_top_mv <S2SV_ModEnd> ; int mb_y_in_offset <S2SV_ModStart> gld_y_in_offset = gld_y_offset <S2SV_ModEnd> ; x -> <S2SV_ModStart> mb_col ) ; gld_left_mv <S2SV_ModEnd> = mb_stats -> <S2SV_ModStart> -> ref [ GOLDEN_FRAME <S2SV_ModEnd> ] . m <S2SV_ModStart> . mv . as_mv ; if ( mb_col == 0 ) { gld_top_mv = gld_left_mv <S2SV_ModEnd> ; } xd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int PyParser_AddToken ( parser_state * ps , int type , char * str , int lineno , int col_offset , int end_lineno , int end_col_offset , int * expected_ret ) { int ilabel ; int err ; D ( printf ( \"Token<S2SV_blank>%s/\\'%s\\'<S2SV_blank>...<S2SV_blank>\" , _PyParser_TokenNames [ type ] , str ) ) ; ilabel = classify ( ps , type , str ) ; if ( ilabel < 0 ) return E_SYNTAX ; for ( ; ; ) { dfa * d = ps -> p_stack . s_top -> s_dfa ; state * s = & d -> d_state [ ps -> p_stack . s_top -> s_state ] ; D ( printf ( \"<S2SV_blank>DFA<S2SV_blank>\\'%s\\',<S2SV_blank>state<S2SV_blank>%d:\" , d -> d_name , ps -> p_stack . s_top -> s_state ) ) ; if ( s -> s_lower <= ilabel && ilabel < s -> s_upper ) { int x = s -> s_accel [ ilabel - s -> s_lower ] ; if ( x != - 1 ) { if ( x & ( 1 << 7 ) ) { int nt = ( x >> 8 ) + NT_OFFSET ; int arrow = x & ( ( 1 << 7 ) - 1 ) ; <S2SV_StartBug> dfa * d1 = PyGrammar_FindDFA ( <S2SV_EndBug> ps -> p_grammar , nt ) ; if ( ( err = push ( & ps -> p_stack , nt , d1 , arrow , lineno , col_offset , end_lineno , end_col_offset ) ) > 0 ) { D ( printf ( \"<S2SV_blank>MemError:<S2SV_blank>push\\\\n\" ) ) ; return err ; } <S2SV_StartBug> D ( printf ( \"<S2SV_blank>Push<S2SV_blank>...\\\\n\" ) ) ; <S2SV_EndBug> continue ; } if ( ( err = shift ( & ps -> p_stack , type , str , x , lineno , col_offset , end_lineno , end_col_offset ) ) > 0 ) { D ( printf ( \"<S2SV_blank>MemError:<S2SV_blank>shift.\\\\n\" ) ) ; return err ; } D ( printf ( \"<S2SV_blank>Shift.\\\\n\" ) ) ; while ( s = & d -> d_state [ ps -> p_stack . s_top -> s_state ] , s -> s_accept && s -> s_narcs == 1 ) { D ( printf ( \"<S2SV_blank><S2SV_blank>DFA<S2SV_blank>\\'%s\\',<S2SV_blank>state<S2SV_blank>%d:<S2SV_blank>\" \"Direct<S2SV_blank>pop.\\\\n\" , d -> d_name , ps -> p_stack . s_top -> s_state ) ) ; # ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD # if 0 if ( d -> d_name [ 0 ] == 'i' && strcmp ( d -> d_name , \"import_stmt\" ) == 0 ) future_hack ( ps ) ; # endif # endif s_pop ( & ps -> p_stack ) ; if ( s_empty ( & ps -> p_stack ) ) { D ( printf ( \"<S2SV_blank><S2SV_blank>ACCEPT.\\\\n\" ) ) ; return E_DONE ; } d = ps -> p_stack . s_top -> s_dfa ; } return E_OK ; } } if ( s -> s_accept ) { # ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD # if 0 if ( d -> d_name [ 0 ] == 'i' && strcmp ( d -> d_name , \"import_stmt\" ) == 0 ) future_hack ( ps ) ; # endif # endif s_pop ( & ps -> p_stack ) ; D ( printf ( \"<S2SV_blank>Pop<S2SV_blank>...\\\\n\" ) ) ; if ( s_empty ( & ps -> p_stack ) ) { D ( printf ( \"<S2SV_blank>Error:<S2SV_blank>bottom<S2SV_blank>of<S2SV_blank>stack.\\\\n\" ) ) ; return E_SYNTAX ; } continue ; } D ( printf ( \"<S2SV_blank>Error.\\\\n\" ) ) ; if ( expected_ret ) { if ( s -> s_lower == s -> s_upper - 1 ) { * expected_ret = ps -> p_grammar -> g_ll . ll_label [ s -> s_lower ] . lb_type ; } else * expected_ret = - 1 ; } return E_SYNTAX ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dfa * d1 ; if ( nt == func_body_suite && ! ( ps -> p_flags & PyCF_TYPE_COMMENTS ) ) { D ( printf ( \"<S2SV_blank>[switch<S2SV_blank>func_body_suite<S2SV_blank>to<S2SV_blank>suite]\" ) ) ; nt = suite ; } d1 <S2SV_ModStart> ( printf ( \"<S2SV_blank>Push<S2SV_blank>\\'%s\\'\\\\n\" , d1 -> d_name <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15474\n\n```\nCWE-787 static void processCertificateElements ( struct ndpi_detection_module_struct * ndpi_struct , struct ndpi_flow_struct * flow , u_int16_t p_offset , u_int16_t certificate_len ) { struct ndpi_packet_struct * packet = & flow -> packet ; u_int num_found = 0 , i ; <S2SV_StartBug> char buffer [ 64 ] = { '\\\\0' } , rdnSeqBuf [ 1024 ] = { '\\\\0' } ; <S2SV_EndBug> u_int rdn_len = 0 ; # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>[offset:<S2SV_blank>%u][certificate_len:<S2SV_blank>%u]\\\\n\" , __FUNCTION__ , p_offset , certificate_len ) ; # endif for ( i = p_offset ; i < certificate_len ; i ++ ) { if ( ( packet -> payload [ i ] == 0x55 ) && ( packet -> payload [ i + 1 ] == 0x04 ) && ( packet -> payload [ i + 2 ] == 0x03 ) ) { int rc = extractRDNSequence ( packet , i , buffer , sizeof ( buffer ) , rdnSeqBuf , & rdn_len , sizeof ( rdnSeqBuf ) , \"CN\" ) ; if ( rc == - 1 ) break ; # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>[%s][%s:<S2SV_blank>%s]\\\\n\" , __FUNCTION__ , ( num_found == 0 ) ? \"Subject\" : \"Issuer\" , \"Common<S2SV_blank>Name\" , buffer ) ; # endif } else if ( ( packet -> payload [ i ] == 0x55 ) && ( packet -> payload [ i + 1 ] == 0x04 ) && ( packet -> payload [ i + 2 ] == 0x06 ) ) { int rc = extractRDNSequence ( packet , i , buffer , sizeof ( buffer ) , rdnSeqBuf , & rdn_len , sizeof ( rdnSeqBuf ) , \"C\" ) ; if ( rc == - 1 ) break ; # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>[%s][%s:<S2SV_blank>%s]\\\\n\" , __FUNCTION__ , ( num_found == 0 ) ? \"Subject\" : \"Issuer\" , \"Country\" , buffer ) ; # endif } else if ( ( packet -> payload [ i ] == 0x55 ) && ( packet -> payload [ i + 1 ] == 0x04 ) && ( packet -> payload [ i + 2 ] == 0x07 ) ) { int rc = extractRDNSequence ( packet , i , buffer , sizeof ( buffer ) , rdnSeqBuf , & rdn_len , sizeof ( rdnSeqBuf ) , \"L\" ) ; if ( rc == - 1 ) break ; # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>[%s][%s:<S2SV_blank>%s]\\\\n\" , __FUNCTION__ , ( num_found == 0 ) ? \"Subject\" : \"Issuer\" , \"Locality\" , buffer ) ; # endif } else if ( ( packet -> payload [ i ] == 0x55 ) && ( packet -> payload [ i + 1 ] == 0x04 ) && ( packet -> payload [ i + 2 ] == 0x08 ) ) { int rc = extractRDNSequence ( packet , i , buffer , sizeof ( buffer ) , rdnSeqBuf , & rdn_len , sizeof ( rdnSeqBuf ) , \"ST\" ) ; if ( rc == - 1 ) break ; # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>[%s][%s:<S2SV_blank>%s]\\\\n\" , __FUNCTION__ , ( num_found == 0 ) ? \"Subject\" : \"Issuer\" , \"State<S2SV_blank>or<S2SV_blank>Province\" , buffer ) ; # endif } else if ( ( packet -> payload [ i ] == 0x55 ) && ( packet -> payload [ i + 1 ] == 0x04 ) && ( packet -> payload [ i + 2 ] == 0x0a ) ) { int rc = extractRDNSequence ( packet , i , buffer , sizeof ( buffer ) , rdnSeqBuf , & rdn_len , sizeof ( rdnSeqBuf ) , \"O\" ) ; if ( rc == - 1 ) break ; # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>[%s][%s:<S2SV_blank>%s]\\\\n\" , __FUNCTION__ , ( num_found == 0 ) ? \"Subject\" : \"Issuer\" , \"Organization<S2SV_blank>Name\" , buffer ) ; # endif } else if ( ( packet -> payload [ i ] == 0x55 ) && ( packet -> payload [ i + 1 ] == 0x04 ) && ( packet -> payload [ i + 2 ] == 0x0b ) ) { int rc = extractRDNSequence ( packet , i , buffer , sizeof ( buffer ) , rdnSeqBuf , & rdn_len , sizeof ( rdnSeqBuf ) , \"OU\" ) ; if ( rc == - 1 ) break ; # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>[%s][%s:<S2SV_blank>%s]\\\\n\" , __FUNCTION__ , ( num_found == 0 ) ? \"Subject\" : \"Issuer\" , \"Organization<S2SV_blank>Unit\" , buffer ) ; # endif } else if ( ( packet -> payload [ i ] == 0x30 ) && ( packet -> payload [ i + 1 ] == 0x1e ) && ( packet -> payload [ i + 2 ] == 0x17 ) ) { u_int8_t len = packet -> payload [ i + 3 ] ; u_int offset = i + 4 ; if ( num_found == 0 ) { num_found ++ ; # ifdef DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>IssuerDN<S2SV_blank>[%s]\\\\n\" , __FUNCTION__ , rdnSeqBuf ) ; # endif if ( rdn_len ) flow -> protos . stun_ssl . ssl . issuerDN = ndpi_strdup ( rdnSeqBuf ) ; rdn_len = 0 ; } if ( ( offset + len ) < packet -> payload_packet_len ) { char utcDate [ 32 ] ; # ifdef DEBUG_TLS u_int j ; printf ( \"[CERTIFICATE]<S2SV_blank>notBefore<S2SV_blank>[len:<S2SV_blank>%u][\" , len ) ; for ( j = 0 ; j < len ; j ++ ) printf ( \"%c\" , packet -> payload [ i + 4 + j ] ) ; printf ( \"]\\\\n\" ) ; # endif if ( len < ( sizeof ( utcDate ) - 1 ) ) { struct tm utc ; utc . tm_isdst = - 1 ; strncpy ( utcDate , ( const char * ) & packet -> payload [ i + 4 ] , len ) ; utcDate [ len ] = '\\\\0' ; if ( strptime ( utcDate , \"%y%m%d%H%M%SZ\" , & utc ) != NULL ) { flow -> protos . stun_ssl . ssl . notBefore = timegm ( & utc ) ; # ifdef DEBUG_TLS printf ( \"[CERTIFICATE]<S2SV_blank>notBefore<S2SV_blank>%u<S2SV_blank>[%s]\\\\n\" , flow -> protos . stun_ssl . ssl . notBefore , utcDate ) ; # endif } } offset += len ; if ( ( offset + 1 ) < packet -> payload_packet_len ) { len = packet -> payload [ offset + 1 ] ; offset += 2 ; if ( ( offset + len ) < packet -> payload_packet_len ) { u_int32_t time_sec = flow -> packet . current_time_ms / 1000 ; # ifdef DEBUG_TLS u_int j ; printf ( \"[CERTIFICATE]<S2SV_blank>notAfter<S2SV_blank>[len:<S2SV_blank>%u][\" , len ) ; for ( j = 0 ; j < len ; j ++ ) printf ( \"%c\" , packet -> payload [ offset + j ] ) ; printf ( \"]\\\\n\" ) ; # endif if ( len < ( sizeof ( utcDate ) - 1 ) ) { struct tm utc ; utc . tm_isdst = - 1 ; strncpy ( utcDate , ( const char * ) & packet -> payload [ offset ] , len ) ; utcDate [ len ] = '\\\\0' ; if ( strptime ( utcDate , \"%y%m%d%H%M%SZ\" , & utc ) != NULL ) { flow -> protos . stun_ssl . ssl . notAfter = timegm ( & utc ) ; # ifdef DEBUG_TLS printf ( \"[CERTIFICATE]<S2SV_blank>notAfter<S2SV_blank>%u<S2SV_blank>[%s]\\\\n\" , flow -> protos . stun_ssl . ssl . notAfter , utcDate ) ; # endif } } if ( ( time_sec < flow -> protos . stun_ssl . ssl . notBefore ) || ( time_sec > flow -> protos . stun_ssl . ssl . notAfter ) ) NDPI_SET_BIT ( flow -> risk , NDPI_TLS_CERTIFICATE_EXPIRED ) ; } } } } else if ( ( packet -> payload [ i ] == 0x55 ) && ( packet -> payload [ i + 1 ] == 0x1d ) && ( packet -> payload [ i + 2 ] == 0x11 ) ) { u_int8_t matched_name = 0 ; # ifdef DEBUG_TLS printf ( \"*******<S2SV_blank>[TLS]<S2SV_blank>Found<S2SV_blank>subjectAltName\\\\n\" ) ; # endif i += 3 ; i ++ ; if ( i < packet -> payload_packet_len ) { i += ( packet -> payload [ i ] & 0x80 ) ? ( packet -> payload [ i ] & 0x7F ) : 0 ; if ( i < packet -> payload_packet_len ) { i += 2 ; if ( i < packet -> payload_packet_len ) { i += ( packet -> payload [ i ] & 0x80 ) ? ( packet -> payload [ i ] & 0x7F ) : 0 ; i ++ ; while ( i < packet -> payload_packet_len ) { if ( packet -> payload [ i ] == 0x82 ) { if ( ( i < ( packet -> payload_packet_len - 1 ) ) && ( ( i + packet -> payload [ i + 1 ] + 2 ) < packet -> payload_packet_len ) ) { u_int8_t len = packet -> payload [ i + 1 ] ; char dNSName [ 256 ] ; i += 2 ; if ( len == 0 ) break ; strncpy ( dNSName , ( const char * ) & packet -> payload [ i ] , len ) ; dNSName [ len ] = '\\\\0' ; cleanupServerName ( dNSName , len ) ; # if DEBUG_TLS printf ( \"[TLS]<S2SV_blank>dNSName<S2SV_blank>%s<S2SV_blank>[%s]\\\\n\" , dNSName , flow -> protos . stun_ssl . ssl . client_requested_server_name ) ; # endif if ( matched_name == 0 ) { if ( ( dNSName [ 0 ] == '*' ) && strstr ( flow -> protos . stun_ssl . ssl . client_requested_server_name , & dNSName [ 1 ] ) ) matched_name = 1 ; else if ( strcmp ( flow -> protos . stun_ssl . ssl . client_requested_server_name , dNSName ) == 0 ) matched_name = 1 ; } if ( flow -> protos . stun_ssl . ssl . server_names == NULL ) flow -> protos . stun_ssl . ssl . server_names = ndpi_strdup ( dNSName ) , flow -> protos . stun_ssl . ssl . server_names_len = strlen ( dNSName ) ; else { u_int16_t dNSName_len = strlen ( dNSName ) ; u_int16_t newstr_len = flow -> protos . stun_ssl . ssl . server_names_len + dNSName_len + 1 ; char * newstr = ( char * ) ndpi_realloc ( flow -> protos . stun_ssl . ssl . server_names , flow -> protos . stun_ssl . ssl . server_names_len + 1 , newstr_len + 1 ) ; if ( newstr ) { flow -> protos . stun_ssl . ssl . server_names = newstr ; flow -> protos . stun_ssl . ssl . server_names [ flow -> protos . stun_ssl . ssl . server_names_len ] = ',' ; strncpy ( & flow -> protos . stun_ssl . ssl . server_names [ flow -> protos . stun_ssl . ssl . server_names_len + 1 ] , dNSName , dNSName_len + 1 ) ; flow -> protos . stun_ssl . ssl . server_names [ newstr_len ] = '\\\\0' ; flow -> protos . stun_ssl . ssl . server_names_len = newstr_len ; } } if ( ! flow -> l4 . tcp . tls . subprotocol_detected ) if ( ndpi_match_hostname_protocol ( ndpi_struct , flow , NDPI_PROTOCOL_TLS , dNSName , len ) ) flow -> l4 . tcp . tls . subprotocol_detected = 1 ; i += len ; } else { # if DEBUG_TLS printf ( \"[TLS]<S2SV_blank>Leftover<S2SV_blank>%u<S2SV_blank>bytes\" , packet -> payload_packet_len - i ) ; # endif break ; } } else { break ; } } if ( ! matched_name ) NDPI_SET_BIT ( flow -> risk , NDPI_TLS_CERTIFICATE_MISMATCH ) ; } } } } } if ( rdn_len ) flow -> protos . stun_ssl . ssl . subjectDN = ndpi_strdup ( rdnSeqBuf ) ; if ( flow -> protos . stun_ssl . ssl . subjectDN && flow -> protos . stun_ssl . ssl . issuerDN && ( ! strcmp ( flow -> protos . stun_ssl . ssl . subjectDN , flow -> protos . stun_ssl . ssl . issuerDN ) ) ) NDPI_SET_BIT ( flow -> risk , NDPI_TLS_SELFSIGNED_CERTIFICATE ) ; # if DEBUG_TLS printf ( \"[TLS]<S2SV_blank>%s()<S2SV_blank>SubjectDN<S2SV_blank>[%s]\\\\n\" , __FUNCTION__ , rdnSeqBuf ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , rdnSeqBuf [ 2048 <S2SV_ModEnd> ] = {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13039\n\n```\nCWE-125 static const u_char * ikev1_attrmap_print ( netdissect_options * ndo , <S2SV_StartBug> const u_char * p , const u_char * ep , <S2SV_EndBug> const struct attrmap * map , size_t nmap ) { int totlen ; uint32_t t , v ; <S2SV_StartBug> if ( p [ 0 ] & 0x80 ) <S2SV_EndBug> totlen = 4 ; <S2SV_StartBug> else <S2SV_EndBug> totlen = 4 + EXTRACT_16BITS ( & p [ 2 ] ) ; <S2SV_StartBug> if ( ep < p + totlen ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[|attr]\" ) ) ; <S2SV_StartBug> return ep + 1 ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"(\" ) ) ; t = EXTRACT_16BITS ( & p [ 0 ] ) & 0x7fff ; if ( map && t < nmap && map [ t ] . type ) ND_PRINT ( ( ndo , \"type=%s<S2SV_blank>\" , map [ t ] . type ) ) ; else ND_PRINT ( ( ndo , \"type=#%d<S2SV_blank>\" , t ) ) ; if ( p [ 0 ] & 0x80 ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"value=\" ) ) ; <S2SV_EndBug> v = EXTRACT_16BITS ( & p [ 2 ] ) ; if ( map && t < nmap && v < map [ t ] . nvalue && map [ t ] . value [ v ] ) ND_PRINT ( ( ndo , \"%s\" , map [ t ] . value [ v ] ) ) ; else <S2SV_StartBug> rawprint ( ndo , ( const uint8_t * ) & p [ 2 ] , 2 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> ND_PRINT ( ( ndo , \"len=%d<S2SV_blank>value=\" , EXTRACT_16BITS ( & p [ 2 ] ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> rawprint ( ndo , ( const uint8_t * ) & p [ 4 ] , EXTRACT_16BITS ( & p [ 2 ] ) ) ; <S2SV_EndBug> } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_StartBug> return p + totlen ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const u_char * ep2 <S2SV_ModEnd> , const struct <S2SV_ModStart> , v ; ND_TCHECK ( p [ 0 ] ) ; <S2SV_ModStart> 4 ; else { ND_TCHECK_16BITS ( & p [ 2 ] ) ; <S2SV_ModStart> ] ) ; } if ( ep2 <S2SV_ModEnd> < p + <S2SV_ModStart> ) ; return ep2 <S2SV_ModEnd> + 1 ; <S2SV_ModStart> 1 ; } ND_TCHECK_16BITS ( & p [ 0 ] ) ; <S2SV_ModStart> , \"value=\" ) ) ; ND_TCHECK_16BITS ( & p [ 2 ] <S2SV_ModStart> ) ; else { if ( ! <S2SV_ModStart> , 2 ) ) { ND_PRINT ( ( ndo , \")\" ) ) ; goto trunc ; } } <S2SV_ModEnd> } else { <S2SV_ModStart> , \"len=%d<S2SV_blank>value=\" , totlen - 4 ) ) ; if ( ! <S2SV_ModEnd> rawprint ( ndo <S2SV_ModStart> 4 ] , totlen - 4 ) ) { <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; goto trunc ; } } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_ModStart> + totlen ; trunc : return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7417\n\n```\nCWE-20 SPL_METHOD ( Array , unserialize ) { spl_array_object * intern = ( spl_array_object * ) zend_object_store_get_object ( getThis ( ) TSRMLS_CC ) ; char * buf ; int buf_len ; const unsigned char * p , * s ; php_unserialize_data_t var_hash ; zval * pmembers , * pflags = NULL ; HashTable * aht ; long flags ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"s\" , & buf , & buf_len ) == FAILURE ) { return ; } if ( buf_len == 0 ) { return ; } aht = spl_array_get_hash_table ( intern , 0 TSRMLS_CC ) ; if ( aht -> nApplyCount > 0 ) { zend_error ( E_WARNING , \"Modification<S2SV_blank>of<S2SV_blank>ArrayObject<S2SV_blank>during<S2SV_blank>sorting<S2SV_blank>is<S2SV_blank>prohibited\" ) ; return ; } s = p = ( const unsigned char * ) buf ; PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; if ( * p != 'x' || * ++ p != ':' ) { goto outexcept ; } ++ p ; ALLOC_INIT_ZVAL ( pflags ) ; if ( ! php_var_unserialize ( & pflags , & p , s + buf_len , & var_hash TSRMLS_CC ) || Z_TYPE_P ( pflags ) != IS_LONG ) { goto outexcept ; } var_push_dtor ( & var_hash , & pflags ) ; -- p ; flags = Z_LVAL_P ( pflags ) ; if ( * p != ';' ) { goto outexcept ; } ++ p ; if ( * p != 'm' ) { if ( * p != 'a' && * p != 'O' && * p != 'C' && * p != 'r' ) { goto outexcept ; } intern -> ar_flags &= ~ SPL_ARRAY_CLONE_MASK ; intern -> ar_flags |= flags & SPL_ARRAY_CLONE_MASK ; zval_ptr_dtor ( & intern -> array ) ; ALLOC_INIT_ZVAL ( intern -> array ) ; <S2SV_StartBug> if ( ! php_var_unserialize ( & intern -> array , & p , s + buf_len , & var_hash TSRMLS_CC ) ) { <S2SV_EndBug> goto outexcept ; } var_push_dtor ( & var_hash , & intern -> array ) ; } if ( * p != ';' ) { goto outexcept ; } ++ p ; if ( * p != 'm' || * ++ p != ':' ) { goto outexcept ; } ++ p ; ALLOC_INIT_ZVAL ( pmembers ) ; if ( ! php_var_unserialize ( & pmembers , & p , s + buf_len , & var_hash TSRMLS_CC ) || Z_TYPE_P ( pmembers ) != IS_ARRAY ) { zval_ptr_dtor ( & pmembers ) ; goto outexcept ; } var_push_dtor ( & var_hash , & pmembers ) ; if ( ! intern -> std . properties ) { rebuild_object_properties ( & intern -> std ) ; } zend_hash_copy ( intern -> std . properties , Z_ARRVAL_P ( pmembers ) , ( copy_ctor_func_t ) zval_add_ref , ( void * ) NULL , sizeof ( zval * ) ) ; zval_ptr_dtor ( & pmembers ) ; PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; if ( pflags ) { zval_ptr_dtor ( & pflags ) ; } return ; outexcept : PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; if ( pflags ) { zval_ptr_dtor ( & pflags ) ; } zend_throw_exception_ex ( spl_ce_UnexpectedValueException , 0 TSRMLS_CC , \"Error<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%ld<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , ( long ) ( ( char * ) p - buf ) , buf_len ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> var_hash TSRMLS_CC ) || ( Z_TYPE_P ( intern -> array ) != IS_ARRAY && Z_TYPE_P ( intern -> array ) != IS_OBJECT ) ) { zval_ptr_dtor ( & intern -> array ) ; <S2SV_ModEnd> goto outexcept ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 static int jp2_pclr_getdata ( jp2_box_t * box , jas_stream_t * in ) { jp2_pclr_t * pclr = & box -> data . pclr ; int lutsize ; unsigned int i ; unsigned int j ; int_fast32_t x ; pclr -> lutdata = 0 ; <S2SV_StartBug> if ( jp2_getuint16 ( in , & pclr -> numlutents ) || <S2SV_EndBug> jp2_getuint8 ( in , & pclr -> numchans ) ) { return - 1 ; } lutsize = pclr -> numlutents * pclr -> numchans ; if ( ! ( pclr -> lutdata = jas_alloc2 ( lutsize , sizeof ( int_fast32_t ) ) ) ) { return - 1 ; } if ( ! ( pclr -> bpc = jas_alloc2 ( pclr -> numchans , sizeof ( uint_fast8_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < pclr -> numchans ; ++ i ) { if ( jp2_getuint8 ( in , & pclr -> bpc [ i ] ) ) { return - 1 ; } } for ( i = 0 ; i < pclr -> numlutents ; ++ i ) { for ( j = 0 ; j < pclr -> numchans ; ++ j ) { if ( jp2_getint ( in , ( pclr -> bpc [ j ] & 0x80 ) != 0 , ( pclr -> bpc [ j ] & 0x7f ) + 1 , & x ) ) { return - 1 ; } pclr -> lutdata [ i * pclr -> numchans + j ] = x ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; pclr -> bpc = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void accumulate_frame_motion_stats ( <S2SV_StartBug> FIRSTPASS_STATS * this_frame , <S2SV_EndBug> <S2SV_StartBug> double * this_frame_mv_in_out , <S2SV_EndBug> double * mv_in_out_accumulator , double * abs_mv_in_out_accumulator , double * mv_ratio_accumulator ) { <S2SV_StartBug> double motion_pct ; <S2SV_EndBug> motion_pct = this_frame -> pcnt_motion ; <S2SV_StartBug> * this_frame_mv_in_out = this_frame -> mv_in_out_count * motion_pct ; <S2SV_EndBug> <S2SV_StartBug> * mv_in_out_accumulator += this_frame -> mv_in_out_count * motion_pct ; <S2SV_EndBug> <S2SV_StartBug> * abs_mv_in_out_accumulator += fabs ( this_frame -> mv_in_out_count * motion_pct ) ; <S2SV_EndBug> <S2SV_StartBug> if ( motion_pct > 0.05 ) { <S2SV_EndBug> <S2SV_StartBug> const double this_frame_mvr_ratio = fabs ( this_frame -> mvr_abs ) / <S2SV_EndBug> <S2SV_StartBug> DOUBLE_DIVIDE_CHECK ( fabs ( this_frame -> MVr ) ) ; <S2SV_EndBug> <S2SV_StartBug> const double this_frame_mvc_ratio = fabs ( this_frame -> mvc_abs ) / <S2SV_EndBug> <S2SV_StartBug> DOUBLE_DIVIDE_CHECK ( fabs ( this_frame -> MVc ) ) ; <S2SV_EndBug> <S2SV_StartBug> * mv_ratio_accumulator += ( this_frame_mvr_ratio < this_frame -> mvr_abs ) <S2SV_EndBug> <S2SV_StartBug> ? ( this_frame_mvr_ratio * motion_pct ) <S2SV_EndBug> : this_frame -> mvr_abs * motion_pct ; <S2SV_StartBug> * mv_ratio_accumulator += ( this_frame_mvc_ratio < this_frame -> mvc_abs ) <S2SV_EndBug> <S2SV_StartBug> ? ( this_frame_mvc_ratio * motion_pct ) <S2SV_EndBug> : this_frame -> mvc_abs * motion_pct ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void accumulate_frame_motion_stats ( const FIRSTPASS_STATS * stats <S2SV_ModEnd> , double * <S2SV_ModStart> , double * mv_in_out <S2SV_ModEnd> , double * <S2SV_ModStart> mv_ratio_accumulator ) { const double pct = stats <S2SV_ModEnd> -> pcnt_motion ; <S2SV_ModStart> pcnt_motion ; * mv_in_out = stats <S2SV_ModEnd> -> mv_in_out_count * <S2SV_ModStart> -> mv_in_out_count * pct <S2SV_ModEnd> ; * mv_in_out_accumulator <S2SV_ModStart> * mv_in_out_accumulator += * mv_in_out <S2SV_ModEnd> ; * abs_mv_in_out_accumulator <S2SV_ModStart> += fabs ( * mv_in_out <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; if ( pct <S2SV_ModEnd> > 0.05 ) <S2SV_ModStart> { const double mvr_ratio <S2SV_ModEnd> = fabs ( <S2SV_ModStart> = fabs ( stats <S2SV_ModEnd> -> mvr_abs ) <S2SV_ModStart> ( fabs ( stats <S2SV_ModEnd> -> MVr ) <S2SV_ModStart> ; const double mvc_ratio <S2SV_ModEnd> = fabs ( <S2SV_ModStart> = fabs ( stats <S2SV_ModEnd> -> mvc_abs ) <S2SV_ModStart> ( fabs ( stats <S2SV_ModEnd> -> MVc ) <S2SV_ModStart> * mv_ratio_accumulator += pct * ( mvr_ratio < stats -> mvr_abs ? mvr_ratio : stats <S2SV_ModEnd> -> mvr_abs ) <S2SV_ModStart> -> mvr_abs ) <S2SV_ModEnd> ; * mv_ratio_accumulator <S2SV_ModStart> * mv_ratio_accumulator += pct * ( mvc_ratio < stats -> mvc_abs ? mvc_ratio : stats <S2SV_ModEnd> -> mvc_abs ) <S2SV_ModStart> -> mvc_abs ) <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15906\n\n```\nCWE-732 static void process_open ( u_int32_t id ) { u_int32_t pflags ; Attrib a ; char * name ; int r , handle , fd , flags , mode , status = SSH2_FX_FAILURE ; if ( ( r = sshbuf_get_cstring ( iqueue , & name , NULL ) ) != 0 || ( r = sshbuf_get_u32 ( iqueue , & pflags ) ) != 0 || ( r = decode_attrib ( iqueue , & a ) ) != 0 ) fatal ( \"%s:<S2SV_blank>buffer<S2SV_blank>error:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; debug3 ( \"request<S2SV_blank>%u:<S2SV_blank>open<S2SV_blank>flags<S2SV_blank>%d\" , id , pflags ) ; flags = flags_from_portable ( pflags ) ; mode = ( a . flags & SSH2_FILEXFER_ATTR_PERMISSIONS ) ? a . perm : 0666 ; logit ( \"open<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>flags<S2SV_blank>%s<S2SV_blank>mode<S2SV_blank>0%o\" , name , string_from_portable ( pflags ) , mode ) ; if ( readonly && <S2SV_StartBug> ( ( flags & O_ACCMODE ) == O_WRONLY || <S2SV_EndBug> <S2SV_StartBug> ( flags & O_ACCMODE ) == O_RDWR ) ) { <S2SV_EndBug> verbose ( \"Refusing<S2SV_blank>open<S2SV_blank>request<S2SV_blank>in<S2SV_blank>read-only<S2SV_blank>mode\" ) ; status = SSH2_FX_PERMISSION_DENIED ; } else { fd = open ( name , flags , mode ) ; if ( fd < 0 ) { status = errno_to_portable ( errno ) ; } else { handle = handle_new ( HANDLE_FILE , name , fd , flags , NULL ) ; if ( handle < 0 ) { close ( fd ) ; } else { send_handle ( id , handle ) ; status = SSH2_FX_OK ; } } } if ( status != SSH2_FX_OK ) send_status ( id , status ) ; free ( name ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & O_ACCMODE ) != O_RDONLY <S2SV_ModEnd> || ( flags <S2SV_ModStart> ( flags & ( O_CREAT | O_TRUNC ) ) != 0 <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int iucv_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct iucv_sock * iucv = iucv_sk ( sk ) ; unsigned int copied , rlen ; struct sk_buff * skb , * rskb , * cskb ; int err = 0 ; <S2SV_StartBug> u32 offset ; <S2SV_EndBug> msg -> msg_namelen = 0 ; if ( ( sk -> sk_state == IUCV_DISCONN ) && skb_queue_empty ( & iucv -> backlog_skb_q ) && skb_queue_empty ( & sk -> sk_receive_queue ) && list_empty ( & iucv -> message_q . list ) ) return 0 ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) { if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } offset = IUCV_SKB_CB ( skb ) -> offset ; rlen = skb -> len - offset ; copied = min_t ( unsigned int , rlen , len ) ; if ( ! rlen ) sk -> sk_shutdown = sk -> sk_shutdown | RCV_SHUTDOWN ; cskb = skb ; if ( skb_copy_datagram_iovec ( cskb , offset , msg -> msg_iov , copied ) ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - EFAULT ; } if ( sk -> sk_type == SOCK_SEQPACKET ) { if ( copied < rlen ) msg -> msg_flags |= MSG_TRUNC ; msg -> msg_flags |= MSG_EOR ; } err = put_cmsg ( msg , SOL_IUCV , SCM_IUCV_TRGCLS , sizeof ( IUCV_SKB_CB ( skb ) -> class ) , ( void * ) & IUCV_SKB_CB ( skb ) -> class ) ; if ( err ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return err ; } if ( ! ( flags & MSG_PEEK ) ) { if ( sk -> sk_type == SOCK_STREAM ) { if ( copied < rlen ) { IUCV_SKB_CB ( skb ) -> offset = offset + copied ; goto done ; } } kfree_skb ( skb ) ; if ( iucv -> transport == AF_IUCV_TRANS_HIPER ) { atomic_inc ( & iucv -> msg_recv ) ; if ( atomic_read ( & iucv -> msg_recv ) > iucv -> msglimit ) { WARN_ON ( 1 ) ; iucv_sock_close ( sk ) ; return - EFAULT ; } } spin_lock_bh ( & iucv -> message_q . lock ) ; rskb = skb_dequeue ( & iucv -> backlog_skb_q ) ; while ( rskb ) { IUCV_SKB_CB ( rskb ) -> offset = 0 ; if ( sock_queue_rcv_skb ( sk , rskb ) ) { skb_queue_head ( & iucv -> backlog_skb_q , rskb ) ; break ; } else { rskb = skb_dequeue ( & iucv -> backlog_skb_q ) ; } } if ( skb_queue_empty ( & iucv -> backlog_skb_q ) ) { if ( ! list_empty ( & iucv -> message_q . list ) ) iucv_process_message_q ( sk ) ; if ( atomic_read ( & iucv -> msg_recv ) >= iucv -> msglimit / 2 ) { err = iucv_send_ctrl ( sk , AF_IUCV_FLAG_WIN ) ; if ( err ) { sk -> sk_state = IUCV_DISCONN ; sk -> sk_state_change ( sk ) ; } } } spin_unlock_bh ( & iucv -> message_q . lock ) ; } done : if ( sk -> sk_type == SOCK_SEQPACKET && ( flags & MSG_TRUNC ) ) copied = rlen ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; u32 offset <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8929\n\n```\nCWE-416 static void test_modules ( ) { assert_true_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.one<S2SV_blank>+<S2SV_blank>1<S2SV_blank>==<S2SV_blank>tests.constants.two<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.foo<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.empty<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.empty()<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[1].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>or<S2SV_blank>true<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[0]<S2SV_blank>==<S2SV_blank>0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[1]<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[0]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[2]<S2SV_blank>==<S2SV_blank>\\\\\"baz\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"foo\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"bar\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"bar\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2,3)<S2SV_blank>==<S2SV_blank>6<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0,3.0)<S2SV_blank>==<S2SV_blank>6.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.length(\\\\\"dummy\\\\\")<S2SV_blank>==<S2SV_blank>5<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.isum(1,1)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,1.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"foo\\\\\")<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"bar\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/i,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/is,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>7\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_error ( \"import<S2SV_blank>\\\\\"\\\\\\\\x00\\\\\"\" , ERROR_INVALID_MODULE_NAME ) ; assert_error ( \"import<S2SV_blank>\\\\\"\\\\\"\" , ERROR_INVALID_MODULE_NAME ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.one<S2SV_blank>+<S2SV_blank>1<S2SV_blank>==<S2SV_blank>tests.constants.two<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.foo<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.empty<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.empty()<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[1].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>or<S2SV_blank>true<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[0]<S2SV_blank>==<S2SV_blank>0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[1]<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[0]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[2]<S2SV_blank>==<S2SV_blank>\\\\\"baz\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"foo\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"bar\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"bar\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2,3)<S2SV_blank>==<S2SV_blank>6<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0,3.0)<S2SV_blank>==<S2SV_blank>6.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.foobar(1)<S2SV_blank>==<S2SV_blank>tests.foobar(1)<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.foobar(1)<S2SV_blank>!=<S2SV_blank>tests.foobar(2)<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.length(\\\\\"dummy\\\\\")<S2SV_blank>==<S2SV_blank>5<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.isum(1,1)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,1.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"foo\\\\\")<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"bar\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/i,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/is,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>7\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7042\n\n```\nCWE-295 static int ssl_verify_cert ( struct tunnel * tunnel ) { int ret = - 1 ; int cert_valid = 0 ; unsigned char digest [ SHA256LEN ] ; unsigned int len ; struct x509_digest * elem ; char digest_str [ SHA256STRLEN ] , * subject , * issuer ; char * line ; int i ; X509_NAME * subj ; <S2SV_StartBug> char common_name [ FIELD_SIZE + 1 ] ; <S2SV_EndBug> <S2SV_StartBug> SSL_set_verify ( tunnel -> ssl_handle , SSL_VERIFY_PEER , NULL ) ; <S2SV_EndBug> X509 * cert = SSL_get_peer_certificate ( tunnel -> ssl_handle ) ; if ( cert == NULL ) { log_error ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>gateway<S2SV_blank>certificate.\\\\n\" ) ; return 1 ; } subj = X509_get_subject_name ( cert ) ; # ifdef HAVE_X509_CHECK_HOST if ( X509_check_host ( cert , common_name , FIELD_SIZE , 0 , NULL ) == 1 ) cert_valid = 1 ; # else if ( subj && X509_NAME_get_text_by_NID ( subj , NID_commonName , common_name , FIELD_SIZE ) > 0 && strncasecmp ( common_name , tunnel -> config -> gateway_host , FIELD_SIZE ) == 0 ) cert_valid = 1 ; # endif if ( cert_valid && SSL_get_verify_result ( tunnel -> ssl_handle ) == X509_V_OK ) { log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>succeeded.\\\\n\" ) ; ret = 0 ; goto free_cert ; } log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>failed.\\\\n\" ) ; if ( X509_digest ( cert , EVP_sha256 ( ) , digest , & len ) <= 0 || len != SHA256LEN ) { log_error ( \"Could<S2SV_blank>not<S2SV_blank>compute<S2SV_blank>certificate<S2SV_blank>sha256<S2SV_blank>digest.\\\\n\" ) ; goto free_cert ; } for ( i = 0 ; i < SHA256LEN ; i ++ ) sprintf ( & digest_str [ 2 * i ] , \"%02x\" , digest [ i ] ) ; digest_str [ SHA256STRLEN - 1 ] = '\\\\0' ; for ( elem = tunnel -> config -> cert_whitelist ; elem != NULL ; elem = elem -> next ) if ( memcmp ( digest_str , elem -> data , SHA256STRLEN - 1 ) == 0 ) break ; if ( elem != NULL ) { log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>digest<S2SV_blank>found<S2SV_blank>in<S2SV_blank>white<S2SV_blank>list.\\\\n\" ) ; ret = 0 ; goto free_cert ; } subject = X509_NAME_oneline ( subj , NULL , 0 ) ; issuer = X509_NAME_oneline ( X509_get_issuer_name ( cert ) , NULL , 0 ) ; log_error ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>failed,<S2SV_blank>and<S2SV_blank>the<S2SV_blank>certificate<S2SV_blank>digest<S2SV_blank>in<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>local<S2SV_blank>whitelist.<S2SV_blank>If<S2SV_blank>you<S2SV_blank>trust<S2SV_blank>it,<S2SV_blank>rerun<S2SV_blank>with:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--trusted-cert<S2SV_blank>%s\\\\n\" , digest_str ) ; log_error ( \"or<S2SV_blank>add<S2SV_blank>this<S2SV_blank>line<S2SV_blank>to<S2SV_blank>your<S2SV_blank>config<S2SV_blank>file:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>trusted-cert<S2SV_blank>=<S2SV_blank>%s\\\\n\" , digest_str ) ; log_error ( \"Gateway<S2SV_blank>certificate:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>subject:\\\\n\" ) ; for ( line = strtok ( subject , \"/\" ) ; line != NULL ; line = strtok ( NULL , \"/\" ) ) log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , line ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>issuer:\\\\n\" ) ; for ( line = strtok ( issuer , \"/\" ) ; line != NULL ; line = strtok ( NULL , \"/\" ) ) log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , line ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>sha256<S2SV_blank>digest:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , digest_str ) ; free_cert : X509_free ( cert ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * subj ; SSL_set_verify ( tunnel -> ssl_handle , SSL_VERIFY_PEER , NULL ) ; X509 * cert = SSL_get_peer_certificate ( tunnel -> ssl_handle ) ; if ( cert == NULL ) { log_error ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>gateway<S2SV_blank>certificate.\\\\n\" ) ; return 1 ; } subj = X509_get_subject_name ( cert ) ; # ifdef HAVE_X509_CHECK_HOST if ( X509_check_host ( cert , tunnel -> config -> gateway_host , 0 , 0 , NULL ) == 1 ) cert_valid = 1 ; # else <S2SV_ModStart> 1 ] ; <S2SV_ModEnd> if ( subj\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2847\n\n```\nCWE-399 static long pipe_set_size ( struct pipe_inode_info * pipe , unsigned long nr_pages ) { struct pipe_buffer * bufs ; if ( nr_pages < pipe -> nrbufs ) return - EBUSY ; bufs = kcalloc ( nr_pages , sizeof ( * bufs ) , GFP_KERNEL | __GFP_NOWARN ) ; if ( unlikely ( ! bufs ) ) return - ENOMEM ; if ( pipe -> nrbufs ) { unsigned int tail ; unsigned int head ; tail = pipe -> curbuf + pipe -> nrbufs ; if ( tail < pipe -> buffers ) tail = 0 ; else tail &= ( pipe -> buffers - 1 ) ; head = pipe -> nrbufs - tail ; if ( head ) memcpy ( bufs , pipe -> bufs + pipe -> curbuf , head * sizeof ( struct pipe_buffer ) ) ; if ( tail ) memcpy ( bufs + head , pipe -> bufs , tail * sizeof ( struct pipe_buffer ) ) ; } <S2SV_StartBug> pipe -> curbuf = 0 ; <S2SV_EndBug> kfree ( pipe -> bufs ) ; pipe -> bufs = bufs ; pipe -> buffers = nr_pages ; return nr_pages * PAGE_SIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } account_pipe_buffers ( pipe , pipe -> buffers , nr_pages ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13011\n\n```\nCWE-119 static char * bittok2str_internal ( register const struct tok * lp , register const char * fmt , register u_int v , const char * sep ) { <S2SV_StartBug> static char buf [ 256 ] ; <S2SV_EndBug> int buflen = 0 ; register u_int rotbit ; register u_int tokval ; const char * sepstr = \"\" ; while ( lp != NULL && lp -> s != NULL ) { tokval = lp -> v ; rotbit = 1 ; while ( rotbit != 0 ) { if ( tokval == ( v & rotbit ) ) { <S2SV_StartBug> buflen += snprintf ( buf + buflen , sizeof ( buf ) - buflen , \"%s%s\" , <S2SV_EndBug> <S2SV_StartBug> sepstr , lp -> s ) ; <S2SV_EndBug> sepstr = sep ; break ; } rotbit = rotbit << 1 ; } lp ++ ; } <S2SV_StartBug> if ( buflen == 0 ) <S2SV_EndBug> ( void ) snprintf ( buf , sizeof ( buf ) , fmt == NULL ? \"#%08x\" : fmt , v ) ; return ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ 1024 + 1 ] ; char * bufp = buf ; size_t space_left = sizeof ( buf ) , string_size <S2SV_ModEnd> ; register u_int <S2SV_ModStart> ) ) { if ( space_left <= 1 ) return ( buf ) ; string_size = strlcpy ( bufp , sepstr , space_left ) ; if ( string_size >= space_left ) return ( buf ) ; bufp += string_size ; space_left -= string_size ; if ( space_left <= 1 ) return ( buf ) ; string_size = strlcpy ( bufp <S2SV_ModEnd> , lp -> <S2SV_ModStart> lp -> s , space_left ) ; if ( string_size >= space_left ) return ( buf ) ; bufp += string_size ; space_left -= string_size <S2SV_ModEnd> ; sepstr = <S2SV_ModStart> } if ( bufp == buf <S2SV_ModEnd> ) ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void init_config ( VP8_COMP * cpi , VP8_CONFIG * oxcf ) { VP8_COMMON * cm = & cpi -> common ; cpi -> oxcf = * oxcf ; cpi -> auto_gold = 1 ; cpi -> auto_adjust_gold_quantizer = 1 ; cm -> version = oxcf -> Version ; vp8_setup_version ( cm ) ; <S2SV_StartBug> cpi -> framerate = ( double ) ( oxcf -> timebase . den ) / <S2SV_EndBug> <S2SV_StartBug> ( double ) ( oxcf -> timebase . num ) ; <S2SV_EndBug> if ( cpi -> framerate > 180 ) cpi -> framerate = 30 ; cpi -> ref_framerate = cpi -> framerate ; <S2SV_StartBug> vp8_change_config ( cpi , oxcf ) ; <S2SV_EndBug> cpi -> active_worst_quality = cpi -> oxcf . worst_allowed_q ; cpi -> active_best_quality = cpi -> oxcf . best_allowed_q ; cpi -> avg_frame_qindex = cpi -> oxcf . worst_allowed_q ; cpi -> buffer_level = cpi -> oxcf . starting_buffer_level ; cpi -> bits_off_target = cpi -> oxcf . starting_buffer_level ; cpi -> rolling_target_bits = cpi -> av_per_frame_bandwidth ; cpi -> rolling_actual_bits = cpi -> av_per_frame_bandwidth ; cpi -> long_rolling_target_bits = cpi -> av_per_frame_bandwidth ; cpi -> long_rolling_actual_bits = cpi -> av_per_frame_bandwidth ; cpi -> total_actual_bits = 0 ; cpi -> total_target_vs_actual = 0 ; if ( cpi -> oxcf . number_of_layers > 1 ) { unsigned int i ; double prev_layer_framerate = 0 ; for ( i = 0 ; i < cpi -> oxcf . number_of_layers ; i ++ ) { init_temporal_layer_context ( cpi , oxcf , i , prev_layer_framerate ) ; prev_layer_framerate = cpi -> output_framerate / cpi -> oxcf . rate_decimator [ i ] ; } } # if VP8_TEMPORAL_ALT_REF { int i ; cpi -> fixed_divide [ 0 ] = 0 ; for ( i = 1 ; i < 512 ; i ++ ) cpi -> fixed_divide [ i ] = 0x80000 / i ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cm ) ; if ( oxcf -> timebase . num > 0 ) { <S2SV_ModStart> num ) ; } else { cpi -> framerate = 30 ; } <S2SV_ModStart> -> framerate ; cpi -> ref_frame_flags = VP8_ALTR_FRAME | VP8_GOLD_FRAME | VP8_LAST_FRAME ; cm -> refresh_golden_frame = 0 ; cm -> refresh_last_frame = 1 ; cm -> refresh_entropy_probs = 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4997\n\n```\nCWE-264 static inline int check_entry_size_and_hooks ( struct arpt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct arpt_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct arpt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct arpt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } if ( ! arp_checkentry ( & e -> arp ) ) return - EINVAL ; <S2SV_StartBug> err = xt_check_entry_offsets ( e , e -> target_offset , e -> next_offset ) ; <S2SV_EndBug> if ( err ) return err ; for ( h = 0 ; h < NF_ARP_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_debug ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , e -> elems , e ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int fpDiff ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint32 bps = tif -> tif_dir . td_bitspersample / 8 ; tmsize_t wc = cc / bps ; tmsize_t count ; uint8 * cp = ( uint8 * ) cp0 ; <S2SV_StartBug> uint8 * tmp = ( uint8 * ) _TIFFmalloc ( cc ) ; <S2SV_EndBug> if ( ( cc % ( bps * stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"fpDiff\" , \"%s\" , \"(cc%(bps*stride))!=0\" ) ; return 0 ; } <S2SV_StartBug> if ( ! tmp ) <S2SV_EndBug> return 0 ; _TIFFmemcpy ( tmp , cp0 , cc ) ; for ( count = 0 ; count < wc ; count ++ ) { uint32 byte ; for ( byte = 0 ; byte < bps ; byte ++ ) { # if WORDS_BIGENDIAN cp [ byte * wc + count ] = tmp [ bps * count + byte ] ; # else cp [ ( bps - byte - 1 ) * wc + count ] = tmp [ bps * count + byte ] ; # endif } } _TIFFfree ( tmp ) ; cp = ( uint8 * ) cp0 ; cp += cc - stride - 1 ; for ( count = cc ; count > stride ; count -= stride ) REPEAT4 ( stride , cp [ stride ] = ( unsigned char ) ( ( cp [ stride ] - cp [ 0 ] ) & 0xff ) ; cp -- ) return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8 * tmp <S2SV_ModEnd> ; if ( <S2SV_ModStart> 0 ; } tmp = ( uint8 * ) _TIFFmalloc ( cc ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void rd_pick_sb_modes ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_EndBug> int mi_row , int mi_col , <S2SV_StartBug> int * totalrate , int64_t * totaldist , <S2SV_EndBug> BLOCK_SIZE bsize , PICK_MODE_CONTEXT * ctx , int64_t best_rd ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; MB_MODE_INFO * mbmi ; struct macroblock_plane * const p = x -> plane ; struct macroblockd_plane * const pd = xd -> plane ; const AQ_MODE aq_mode = cpi -> oxcf . aq_mode ; int i , orig_rdmult ; <S2SV_StartBug> double rdmult_ratio ; <S2SV_EndBug> vp9_clear_system_state ( ) ; rdmult_ratio = 1.0 ; x -> use_lp32x32fdct = 1 ; <S2SV_StartBug> if ( bsize < BLOCK_8X8 ) { <S2SV_EndBug> if ( x -> ab_index != 0 ) { * totalrate = 0 ; * totaldist = 0 ; return ; } } <S2SV_StartBug> set_offsets ( cpi , tile , mi_row , mi_col , bsize ) ; <S2SV_EndBug> mbmi = & xd -> mi [ 0 ] -> mbmi ; mbmi -> sb_type = bsize ; for ( i = 0 ; i < MAX_MB_PLANE ; ++ i ) { p [ i ] . coeff = ctx -> coeff_pbuf [ i ] [ 0 ] ; p [ i ] . qcoeff = ctx -> qcoeff_pbuf [ i ] [ 0 ] ; pd [ i ] . dqcoeff = ctx -> dqcoeff_pbuf [ i ] [ 0 ] ; p [ i ] . eobs = ctx -> eobs_pbuf [ i ] [ 0 ] ; } ctx -> is_coded = 0 ; <S2SV_StartBug> x -> skip_recode = 0 ; <S2SV_EndBug> mbmi -> skip = 0 ; <S2SV_StartBug> x -> source_variance = get_sby_perpixel_variance ( cpi , x , bsize ) ; <S2SV_EndBug> if ( aq_mode == VARIANCE_AQ ) { const int energy = bsize <= BLOCK_16X16 ? x -> mb_energy : vp9_block_energy ( cpi , x , bsize ) ; if ( cm -> frame_type == KEY_FRAME || cpi -> refresh_alt_ref_frame || ( cpi -> refresh_golden_frame && ! cpi -> rc . is_src_frame_alt_ref ) ) { mbmi -> segment_id = vp9_vaq_segment_id ( energy ) ; } else { const uint8_t * const map = cm -> seg . update_map ? cpi -> segmentation_map : cm -> last_frame_seg_map ; <S2SV_StartBug> mbmi -> segment_id = vp9_get_segment_id ( cm , map , bsize , mi_row , mi_col ) ; <S2SV_EndBug> } <S2SV_StartBug> rdmult_ratio = vp9_vaq_rdmult_ratio ( energy ) ; <S2SV_EndBug> vp9_init_plane_quantizers ( cpi , x ) ; } <S2SV_StartBug> orig_rdmult = x -> rdmult ; <S2SV_EndBug> if ( cpi -> oxcf . tuning == VP8_TUNE_SSIM ) activity_masking ( cpi , x ) ; if ( aq_mode == VARIANCE_AQ ) { vp9_clear_system_state ( ) ; x -> rdmult = ( int ) round ( x -> rdmult * rdmult_ratio ) ; } else if ( aq_mode == COMPLEXITY_AQ ) { <S2SV_StartBug> const int mi_offset = mi_row * cm -> mi_cols + mi_col ; <S2SV_EndBug> unsigned char complexity = cpi -> complexity_map [ mi_offset ] ; const int is_edge = ( mi_row <= 1 ) || ( mi_row >= ( cm -> mi_rows - 2 ) ) || ( mi_col <= 1 ) || ( mi_col >= ( cm -> mi_cols - 2 ) ) ; if ( ! is_edge && ( complexity > 128 ) ) <S2SV_StartBug> x -> rdmult += ( ( x -> rdmult * ( complexity - 128 ) ) / 256 ) ; <S2SV_EndBug> } else if ( aq_mode == CYCLIC_REFRESH_AQ ) { const uint8_t * const map = cm -> seg . update_map ? cpi -> segmentation_map : cm -> last_frame_seg_map ; <S2SV_StartBug> if ( vp9_get_segment_id ( cm , map , bsize , mi_row , mi_col ) ) <S2SV_EndBug> x -> rdmult = vp9_cyclic_refresh_get_rdmult ( cpi -> cyclic_refresh ) ; } if ( frame_is_intra_only ( cm ) ) { <S2SV_StartBug> vp9_rd_pick_intra_mode_sb ( cpi , x , totalrate , totaldist , bsize , ctx , <S2SV_EndBug> best_rd ) ; } else { <S2SV_StartBug> if ( bsize >= BLOCK_8X8 ) <S2SV_EndBug> <S2SV_StartBug> vp9_rd_pick_inter_mode_sb ( cpi , x , tile , mi_row , mi_col , <S2SV_EndBug> <S2SV_StartBug> totalrate , totaldist , bsize , ctx , best_rd ) ; <S2SV_EndBug> <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> vp9_rd_pick_inter_mode_sub8x8 ( cpi , x , tile , mi_row , mi_col , totalrate , <S2SV_EndBug> totaldist , bsize , ctx , best_rd ) ; } <S2SV_StartBug> if ( aq_mode == VARIANCE_AQ ) { <S2SV_EndBug> x -> rdmult = orig_rdmult ; <S2SV_StartBug> if ( * totalrate != INT_MAX ) { <S2SV_EndBug> vp9_clear_system_state ( ) ; * totalrate = ( int ) round ( * totalrate * rdmult_ratio ) ; } <S2SV_StartBug> } else if ( aq_mode == COMPLEXITY_AQ || aq_mode == CYCLIC_REFRESH_AQ ) { <S2SV_EndBug> x -> rdmult = orig_rdmult ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , TileDataEnc * tile_data , MACROBLOCK * const x <S2SV_ModEnd> , int mi_row <S2SV_ModStart> int mi_col , RD_COST * rd_cost <S2SV_ModEnd> , BLOCK_SIZE bsize <S2SV_ModStart> -> common ; TileInfo * const tile_info = & tile_data -> tile_info <S2SV_ModEnd> ; MACROBLOCKD * <S2SV_ModStart> , orig_rdmult ; vpx_clear_system_state ( ) <S2SV_ModEnd> ; x -> <S2SV_ModStart> = 1 ; <S2SV_ModEnd> set_offsets ( cpi <S2SV_ModStart> ( cpi , tile_info , x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> = 0 ; ctx -> skippable = 0 ; ctx -> pred_pixel_ready = 0 ; <S2SV_ModStart> = 0 ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { <S2SV_ModStart> -> source_variance = vp9_high_get_sby_perpixel_variance ( cpi , & x -> plane [ 0 ] . src , bsize , xd -> bd ) ; } else { x -> source_variance = vp9_get_sby_perpixel_variance ( cpi , & x -> plane [ 0 ] . src , bsize ) ; } # else x -> source_variance = vp9_get_sby_perpixel_variance ( cpi , & x -> plane [ 0 ] . src , bsize ) ; # endif orig_rdmult = x -> rdmult <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> segment_id = get_segment_id <S2SV_ModEnd> ( cm , <S2SV_ModStart> ) ; } <S2SV_ModEnd> x -> rdmult <S2SV_ModStart> x -> rdmult = set_segment_rdmult ( cpi , x , mbmi -> segment_id <S2SV_ModEnd> ) ; } <S2SV_ModStart> COMPLEXITY_AQ ) { <S2SV_ModEnd> x -> rdmult <S2SV_ModStart> x -> rdmult = set_segment_rdmult ( cpi , x , mbmi -> segment_id <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; if ( cyclic_refresh_segment_id_boosted ( get_segment_id <S2SV_ModEnd> ( cm , <S2SV_ModStart> mi_col ) ) ) <S2SV_ModStart> , x , rd_cost , bsize , ctx , <S2SV_ModEnd> best_rd ) ; <S2SV_ModStart> >= BLOCK_8X8 ) { if ( segfeature_active ( & cm -> seg , mbmi -> segment_id , SEG_LVL_SKIP ) ) vp9_rd_pick_inter_mode_sb_seg_skip ( cpi , tile_data , x , rd_cost , bsize , ctx , best_rd ) ; else <S2SV_ModStart> ( cpi , tile_data , x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> , mi_col , rd_cost <S2SV_ModEnd> , bsize , <S2SV_ModStart> best_rd ) ; } else { <S2SV_ModEnd> vp9_rd_pick_inter_mode_sub8x8 ( cpi <S2SV_ModStart> ( cpi , tile_data , x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> , mi_col , rd_cost <S2SV_ModEnd> , bsize , <S2SV_ModStart> ) ; } } if ( ( rd_cost -> rate <S2SV_ModEnd> != INT_MAX ) <S2SV_ModStart> != INT_MAX ) && <S2SV_ModEnd> ( aq_mode == <S2SV_ModStart> aq_mode == COMPLEXITY_AQ ) && ( bsize >= BLOCK_16X16 ) && ( cm -> frame_type == KEY_FRAME || cpi -> refresh_alt_ref_frame || ( cpi -> refresh_golden_frame && ! cpi -> rc . is_src_frame_alt_ref ) ) ) { vp9_caq_select_segment ( cpi , x , bsize , mi_row , mi_col , rd_cost -> rate ) ; } x -> rdmult = orig_rdmult ; if ( rd_cost -> rate == INT_MAX ) rd_cost -> rdcost = INT64_MAX ; ctx -> rate = rd_cost -> rate ; ctx -> dist = rd_cost -> dist ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14397\n\n```\nCWE-476 rfbClientPtr rfbClientIteratorNext ( rfbClientIteratorPtr i ) <S2SV_StartBug> { <S2SV_EndBug> if ( i -> next == 0 ) { LOCK ( rfbClientListMutex ) ; i -> next = i -> screen -> clientHead ; UNLOCK ( rfbClientListMutex ) ; } else { rfbClientPtr cl = i -> next ; i -> next = i -> next -> next ; rfbDecrClientRef ( cl ) ; } # if defined ( LIBVNCSERVER_HAVE_LIBPTHREAD ) || defined ( LIBVNCSERVER_HAVE_WIN32THREADS ) if ( ! i -> closedToo ) while ( i -> next && i -> next -> sock < 0 ) i -> next = i -> next -> next ; if ( i -> next ) rfbIncrClientRef ( i -> next ) ; # endif return i -> next ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ) { if ( ! i ) return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8130\n\n```\nCWE-369 tdata_t _TIFFmalloc ( tsize_t s ) <S2SV_StartBug> { <S2SV_EndBug> return ( malloc ( ( size_t ) s ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { if ( s == 0 ) return ( ( void * ) NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5547\n\n```\nCWE-119 static enum led_brightness k90_backlight_get ( struct led_classdev * led_cdev ) { int ret ; struct k90_led * led = container_of ( led_cdev , struct k90_led , cdev ) ; struct device * dev = led -> cdev . dev -> parent ; struct usb_interface * usbif = to_usb_interface ( dev -> parent ) ; struct usb_device * usbdev = interface_to_usbdev ( usbif ) ; int brightness ; <S2SV_StartBug> char data [ 8 ] ; <S2SV_EndBug> ret = usb_control_msg ( usbdev , usb_rcvctrlpipe ( usbdev , 0 ) , K90_REQUEST_STATUS , USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE , 0 , 0 , data , 8 , USB_CTRL_SET_TIMEOUT ) ; if ( ret < 0 ) { dev_warn ( dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>K90<S2SV_blank>initial<S2SV_blank>state<S2SV_blank>(error<S2SV_blank>%d).\\\\n\" , ret ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> } brightness = data [ 4 ] ; if ( brightness < 0 || brightness > 3 ) { dev_warn ( dev , \"Read<S2SV_blank>invalid<S2SV_blank>backlight<S2SV_blank>brightness:<S2SV_blank>%02hhx.\\\\n\" , data [ 4 ] ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return brightness ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> brightness ; char * data ; data = kmalloc ( 8 , GFP_KERNEL ) ; if ( ! data ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> ret ) ; ret = - EIO ; goto out <S2SV_ModEnd> ; } brightness <S2SV_ModStart> ] ) ; ret = <S2SV_ModEnd> - EIO ; <S2SV_ModStart> - EIO ; goto out ; } ret = brightness ; out : kfree ( data ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11464\n\n```\nCWE-369 static void gaussian_blur_surface ( cairo_surface_t * in , cairo_surface_t * out , gdouble sx , gdouble sy ) { <S2SV_StartBug> gboolean use_box_blur ; <S2SV_EndBug> gint width , height ; cairo_format_t in_format , out_format ; gint in_stride ; gint out_stride ; guchar * in_data , * out_data ; gint bpp ; gboolean out_has_data ; cairo_surface_flush ( in ) ; width = cairo_image_surface_get_width ( in ) ; height = cairo_image_surface_get_height ( in ) ; g_assert ( width == cairo_image_surface_get_width ( out ) && height == cairo_image_surface_get_height ( out ) ) ; in_format = cairo_image_surface_get_format ( in ) ; out_format = cairo_image_surface_get_format ( out ) ; g_assert ( in_format == out_format ) ; g_assert ( in_format == CAIRO_FORMAT_ARGB32 || in_format == CAIRO_FORMAT_A8 ) ; if ( in_format == CAIRO_FORMAT_ARGB32 ) bpp = 4 ; else if ( in_format == CAIRO_FORMAT_A8 ) bpp = 1 ; else { g_assert_not_reached ( ) ; return ; } in_stride = cairo_image_surface_get_stride ( in ) ; out_stride = cairo_image_surface_get_stride ( out ) ; in_data = cairo_image_surface_get_data ( in ) ; out_data = cairo_image_surface_get_data ( out ) ; if ( sx < 0.0 ) sx = 0.0 ; if ( sy < 0.0 ) <S2SV_StartBug> sy = 0.0 ; <S2SV_EndBug> if ( sx < 10.0 && sy < 10.0 ) use_box_blur = FALSE ; else use_box_blur = TRUE ; if ( ( sx == 0.0 && sy == 0.0 ) || sx > 1000 || sy > 1000 ) { cairo_t * cr ; cr = cairo_create ( out ) ; cairo_set_source_surface ( cr , in , 0 , 0 ) ; cairo_paint ( cr ) ; cairo_destroy ( cr ) ; return ; } if ( sx != 0.0 ) { gint box_width ; gdouble * gaussian_matrix ; gint gaussian_matrix_len ; int y ; guchar * row_buffer = NULL ; guchar * row1 , * row2 ; <S2SV_StartBug> if ( use_box_blur ) { <S2SV_EndBug> box_width = compute_box_blur_width ( sx ) ; row_buffer = g_new0 ( guchar , width * bpp * 2 ) ; row1 = row_buffer ; row2 = row_buffer + width * bpp ; } else make_gaussian_convolution_matrix ( sx , & gaussian_matrix , & gaussian_matrix_len ) ; for ( y = 0 ; y < height ; y ++ ) { guchar * in_row , * out_row ; in_row = in_data + in_stride * y ; out_row = out_data + out_stride * y ; if ( use_box_blur ) { if ( box_width % 2 != 0 ) { box_blur_line ( box_width , 0 , in_row , row1 , width , bpp ) ; box_blur_line ( box_width , 0 , row1 , row2 , width , bpp ) ; box_blur_line ( box_width , 0 , row2 , out_row , width , bpp ) ; } else { box_blur_line ( box_width , - 1 , in_row , row1 , width , bpp ) ; box_blur_line ( box_width , 1 , row1 , row2 , width , bpp ) ; box_blur_line ( box_width + 1 , 0 , row2 , out_row , width , bpp ) ; } } else gaussian_blur_line ( gaussian_matrix , gaussian_matrix_len , in_row , out_row , width , bpp ) ; } if ( ! use_box_blur ) g_free ( gaussian_matrix ) ; g_free ( row_buffer ) ; out_has_data = TRUE ; } else out_has_data = FALSE ; if ( sy != 0.0 ) { gint box_height ; gdouble * gaussian_matrix = NULL ; gint gaussian_matrix_len ; guchar * col_buffer ; guchar * col1 , * col2 ; int x ; <S2SV_StartBug> col_buffer = g_new0 ( guchar , height * bpp * 2 ) ; <S2SV_EndBug> col1 = col_buffer ; col2 = col_buffer + height * bpp ; if ( use_box_blur ) { box_height = compute_box_blur_width ( sy ) ; } else make_gaussian_convolution_matrix ( sy , & gaussian_matrix , & gaussian_matrix_len ) ; for ( x = 0 ; x < width ; x ++ ) { if ( out_has_data ) get_column ( col1 , out_data , out_stride , bpp , height , x ) ; else get_column ( col1 , in_data , in_stride , bpp , height , x ) ; if ( use_box_blur ) { if ( box_height % 2 != 0 ) { box_blur_line ( box_height , 0 , col1 , col2 , height , bpp ) ; box_blur_line ( box_height , 0 , col2 , col1 , height , bpp ) ; box_blur_line ( box_height , 0 , col1 , col2 , height , bpp ) ; } else { box_blur_line ( box_height , - 1 , col1 , col2 , height , bpp ) ; box_blur_line ( box_height , 1 , col2 , col1 , height , bpp ) ; box_blur_line ( box_height + 1 , 0 , col1 , col2 , height , bpp ) ; } } else gaussian_blur_line ( gaussian_matrix , gaussian_matrix_len , col1 , col2 , height , bpp ) ; put_column ( col2 , out_data , out_stride , bpp , height , x ) ; } g_free ( gaussian_matrix ) ; g_free ( col_buffer ) ; } cairo_surface_mark_dirty ( out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sy ) { <S2SV_ModEnd> gint width , <S2SV_ModStart> sy = 0.0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> * row2 ; gboolean use_box_blur ; if ( sx < 10.0 ) use_box_blur = FALSE ; else use_box_blur = TRUE ; <S2SV_ModStart> int x ; gboolean use_box_blur ; if ( sy < 10.0 ) use_box_blur = FALSE ; else use_box_blur = TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000494\n\n```\nCWE-119 void ParseNameValue ( const char * buffer , int bufsize , struct NameValueParserData * data ) { struct xmlparser parser ; <S2SV_StartBug> data -> l_head = NULL ; <S2SV_EndBug> data -> portListing = NULL ; data -> portListingLength = 0 ; parser . xmlstart = buffer ; parser . xmlsize = bufsize ; parser . data = data ; parser . starteltfunc = NameValueParserStartElt ; parser . endeltfunc = NameValueParserEndElt ; parser . datafunc = NameValueParserGetData ; parser . attfunc = 0 ; parsexml ( & parser ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> xmlparser parser ; memset ( data , 0 , sizeof ( struct NameValueParserData ) ) <S2SV_ModEnd> ; parser .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9991\n\n```\nCWE-119 static int xwd_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { AVFrame * p = data ; const uint8_t * buf = avpkt -> data ; int i , ret , buf_size = avpkt -> size ; uint32_t version , header_size , vclass , ncolors ; uint32_t xoffset , be , bpp , lsize , rsize ; uint32_t pixformat , pixdepth , bunit , bitorder , bpad ; uint32_t rgb [ 3 ] ; uint8_t * ptr ; GetByteContext gb ; if ( buf_size < XWD_HEADER_SIZE ) return AVERROR_INVALIDDATA ; bytestream2_init ( & gb , buf , buf_size ) ; header_size = bytestream2_get_be32u ( & gb ) ; version = bytestream2_get_be32u ( & gb ) ; if ( version != XWD_VERSION ) { av_log ( avctx , AV_LOG_ERROR , \"unsupported<S2SV_blank>version\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( buf_size < header_size || header_size < XWD_HEADER_SIZE ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>header<S2SV_blank>size\\\\n\" ) ; return AVERROR_INVALIDDATA ; } pixformat = bytestream2_get_be32u ( & gb ) ; pixdepth = bytestream2_get_be32u ( & gb ) ; avctx -> width = bytestream2_get_be32u ( & gb ) ; avctx -> height = bytestream2_get_be32u ( & gb ) ; xoffset = bytestream2_get_be32u ( & gb ) ; be = bytestream2_get_be32u ( & gb ) ; bunit = bytestream2_get_be32u ( & gb ) ; bitorder = bytestream2_get_be32u ( & gb ) ; bpad = bytestream2_get_be32u ( & gb ) ; bpp = bytestream2_get_be32u ( & gb ) ; lsize = bytestream2_get_be32u ( & gb ) ; vclass = bytestream2_get_be32u ( & gb ) ; rgb [ 0 ] = bytestream2_get_be32u ( & gb ) ; rgb [ 1 ] = bytestream2_get_be32u ( & gb ) ; rgb [ 2 ] = bytestream2_get_be32u ( & gb ) ; bytestream2_skipu ( & gb , 8 ) ; ncolors = bytestream2_get_be32u ( & gb ) ; bytestream2_skipu ( & gb , header_size - ( XWD_HEADER_SIZE - 20 ) ) ; av_log ( avctx , AV_LOG_DEBUG , \"pixformat<S2SV_blank>%\" PRIu32 \",<S2SV_blank>pixdepth<S2SV_blank>%\" PRIu32 \",<S2SV_blank>bunit<S2SV_blank>%\" PRIu32 \",<S2SV_blank>bitorder<S2SV_blank>%\" PRIu32 \",<S2SV_blank>bpad<S2SV_blank>%\" PRIu32 \"\\\\n\" , pixformat , pixdepth , bunit , bitorder , bpad ) ; av_log ( avctx , AV_LOG_DEBUG , \"vclass<S2SV_blank>%\" PRIu32 \",<S2SV_blank>ncolors<S2SV_blank>%\" PRIu32 \",<S2SV_blank>bpp<S2SV_blank>%\" PRIu32 \",<S2SV_blank>be<S2SV_blank>%\" PRIu32 \",<S2SV_blank>lsize<S2SV_blank>%\" PRIu32 \",<S2SV_blank>xoffset<S2SV_blank>%\" PRIu32 \"\\\\n\" , vclass , ncolors , bpp , be , lsize , xoffset ) ; av_log ( avctx , AV_LOG_DEBUG , \"red<S2SV_blank>%0\" PRIx32 \",<S2SV_blank>green<S2SV_blank>%0\" PRIx32 \",<S2SV_blank>blue<S2SV_blank>%0\" PRIx32 \"\\\\n\" , rgb [ 0 ] , rgb [ 1 ] , rgb [ 2 ] ) ; if ( pixformat > XWD_Z_PIXMAP ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>pixmap<S2SV_blank>format\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( pixdepth == 0 || pixdepth > 32 ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>pixmap<S2SV_blank>depth\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( xoffset ) { avpriv_request_sample ( avctx , \"xoffset<S2SV_blank>%\" PRIu32 \"\" , xoffset ) ; return AVERROR_PATCHWELCOME ; } if ( be > 1 ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>byte<S2SV_blank>order\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( bitorder > 1 ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>bitmap<S2SV_blank>bit<S2SV_blank>order\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( bunit != 8 && bunit != 16 && bunit != 32 ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>bitmap<S2SV_blank>unit\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( bpad != 8 && bpad != 16 && bpad != 32 ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>bitmap<S2SV_blank>scan-line<S2SV_blank>pad\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( bpp == 0 || bpp > 32 ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>bits<S2SV_blank>per<S2SV_blank>pixel\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( ncolors > 256 ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>entries<S2SV_blank>in<S2SV_blank>colormap\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( ( ret = av_image_check_size ( avctx -> width , avctx -> height , 0 , NULL ) ) < 0 ) return ret ; rsize = FFALIGN ( avctx -> width * bpp , bpad ) / 8 ; if ( lsize < rsize ) { av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>bytes<S2SV_blank>per<S2SV_blank>scan-line\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( bytestream2_get_bytes_left ( & gb ) < ncolors * XWD_CMAP_SIZE + ( uint64_t ) avctx -> height * lsize ) { av_log ( avctx , AV_LOG_ERROR , \"input<S2SV_blank>buffer<S2SV_blank>too<S2SV_blank>small\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( pixformat != XWD_Z_PIXMAP ) { avpriv_report_missing_feature ( avctx , \"Pixmap<S2SV_blank>format<S2SV_blank>%\" PRIu32 , pixformat ) ; return AVERROR_PATCHWELCOME ; } avctx -> pix_fmt = AV_PIX_FMT_NONE ; switch ( vclass ) { case XWD_STATIC_GRAY : case XWD_GRAY_SCALE : if ( bpp != 1 && bpp != 8 ) return AVERROR_INVALIDDATA ; <S2SV_StartBug> if ( pixdepth == 1 ) { <S2SV_EndBug> avctx -> pix_fmt = AV_PIX_FMT_MONOWHITE ; <S2SV_StartBug> } else if ( pixdepth == 8 ) { <S2SV_EndBug> avctx -> pix_fmt = AV_PIX_FMT_GRAY8 ; } break ; case XWD_STATIC_COLOR : case XWD_PSEUDO_COLOR : if ( bpp == 8 ) avctx -> pix_fmt = AV_PIX_FMT_PAL8 ; break ; case XWD_TRUE_COLOR : case XWD_DIRECT_COLOR : if ( bpp != 16 && bpp != 24 && bpp != 32 ) return AVERROR_INVALIDDATA ; if ( bpp == 16 && pixdepth == 15 ) { if ( rgb [ 0 ] == 0x7C00 && rgb [ 1 ] == 0x3E0 && rgb [ 2 ] == 0x1F ) avctx -> pix_fmt = be ? AV_PIX_FMT_RGB555BE : AV_PIX_FMT_RGB555LE ; else if ( rgb [ 0 ] == 0x1F && rgb [ 1 ] == 0x3E0 && rgb [ 2 ] == 0x7C00 ) avctx -> pix_fmt = be ? AV_PIX_FMT_BGR555BE : AV_PIX_FMT_BGR555LE ; } else if ( bpp == 16 && pixdepth == 16 ) { if ( rgb [ 0 ] == 0xF800 && rgb [ 1 ] == 0x7E0 && rgb [ 2 ] == 0x1F ) avctx -> pix_fmt = be ? AV_PIX_FMT_RGB565BE : AV_PIX_FMT_RGB565LE ; else if ( rgb [ 0 ] == 0x1F && rgb [ 1 ] == 0x7E0 && rgb [ 2 ] == 0xF800 ) avctx -> pix_fmt = be ? AV_PIX_FMT_BGR565BE : AV_PIX_FMT_BGR565LE ; } else if ( bpp == 24 ) { if ( rgb [ 0 ] == 0xFF0000 && rgb [ 1 ] == 0xFF00 && rgb [ 2 ] == 0xFF ) avctx -> pix_fmt = be ? AV_PIX_FMT_RGB24 : AV_PIX_FMT_BGR24 ; else if ( rgb [ 0 ] == 0xFF && rgb [ 1 ] == 0xFF00 && rgb [ 2 ] == 0xFF0000 ) avctx -> pix_fmt = be ? AV_PIX_FMT_BGR24 : AV_PIX_FMT_RGB24 ; } else if ( bpp == 32 ) { if ( rgb [ 0 ] == 0xFF0000 && rgb [ 1 ] == 0xFF00 && rgb [ 2 ] == 0xFF ) avctx -> pix_fmt = be ? AV_PIX_FMT_ARGB : AV_PIX_FMT_BGRA ; else if ( rgb [ 0 ] == 0xFF && rgb [ 1 ] == 0xFF00 && rgb [ 2 ] == 0xFF0000 ) avctx -> pix_fmt = be ? AV_PIX_FMT_ABGR : AV_PIX_FMT_RGBA ; } bytestream2_skipu ( & gb , ncolors * XWD_CMAP_SIZE ) ; break ; default : av_log ( avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>visual<S2SV_blank>class\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( avctx -> pix_fmt == AV_PIX_FMT_NONE ) { avpriv_request_sample ( avctx , \"Unknown<S2SV_blank>file:<S2SV_blank>bpp<S2SV_blank>%\" PRIu32 \",<S2SV_blank>pixdepth<S2SV_blank>%\" PRIu32 \",<S2SV_blank>vclass<S2SV_blank>%\" PRIu32 \"\" , bpp , pixdepth , vclass ) ; return AVERROR_PATCHWELCOME ; } if ( ( ret = ff_get_buffer ( avctx , p , 0 ) ) < 0 ) return ret ; p -> key_frame = 1 ; p -> pict_type = AV_PICTURE_TYPE_I ; if ( avctx -> pix_fmt == AV_PIX_FMT_PAL8 ) { uint32_t * dst = ( uint32_t * ) p -> data [ 1 ] ; uint8_t red , green , blue ; for ( i = 0 ; i < ncolors ; i ++ ) { bytestream2_skipu ( & gb , 4 ) ; red = bytestream2_get_byteu ( & gb ) ; bytestream2_skipu ( & gb , 1 ) ; green = bytestream2_get_byteu ( & gb ) ; bytestream2_skipu ( & gb , 1 ) ; blue = bytestream2_get_byteu ( & gb ) ; bytestream2_skipu ( & gb , 3 ) ; dst [ i ] = red << 16 | green << 8 | blue ; } } ptr = p -> data [ 0 ] ; for ( i = 0 ; i < avctx -> height ; i ++ ) { bytestream2_get_bufferu ( & gb , ptr , rsize ) ; bytestream2_skipu ( & gb , lsize - rsize ) ; ptr += p -> linesize [ 0 ] ; } * got_frame = 1 ; return buf_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( bpp == 1 && <S2SV_ModStart> else if ( bpp == 8 &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_loop_filter_frame ( VP9_COMMON * cm , MACROBLOCKD * xd , <S2SV_EndBug> int frame_filter_level , int y_only , int partial_frame ) { int start_mi_row , end_mi_row , mi_rows_to_filter ; if ( ! frame_filter_level ) return ; start_mi_row = 0 ; mi_rows_to_filter = cm -> mi_rows ; if ( partial_frame && cm -> mi_rows > 8 ) { start_mi_row = cm -> mi_rows >> 1 ; start_mi_row &= 0xfffffff8 ; mi_rows_to_filter = MAX ( cm -> mi_rows / 8 , 8 ) ; } end_mi_row = start_mi_row + mi_rows_to_filter ; vp9_loop_filter_frame_init ( cm , frame_filter_level ) ; <S2SV_StartBug> vp9_loop_filter_rows ( cm -> frame_to_show , cm , xd , <S2SV_EndBug> start_mi_row , end_mi_row , y_only ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_loop_filter_frame ( YV12_BUFFER_CONFIG * frame , <S2SV_ModStart> ; vp9_loop_filter_rows ( frame <S2SV_ModEnd> , cm , <S2SV_ModStart> cm , xd -> plane\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3730\n\n```\nCWE-476 static int tls_construct_cke_ecdhe ( SSL * s , unsigned char * * p , int * len , int * al ) { # ifndef OPENSSL_NO_EC unsigned char * encodedPoint = NULL ; int encoded_pt_len = 0 ; EVP_PKEY * ckey = NULL , * skey = NULL ; skey = s -> s3 -> peer_tmp ; if ( skey == NULL ) { SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_ECDHE , ERR_R_INTERNAL_ERROR ) ; return 0 ; } ckey = ssl_generate_pkey ( skey ) ; <S2SV_StartBug> if ( ssl_derive ( s , ckey , skey ) == 0 ) { <S2SV_EndBug> SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_ECDHE , ERR_R_EVP_LIB ) ; goto err ; } encoded_pt_len = EVP_PKEY_get1_tls_encodedpoint ( ckey , & encodedPoint ) ; if ( encoded_pt_len == 0 ) { SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_ECDHE , ERR_R_EC_LIB ) ; goto err ; } EVP_PKEY_free ( ckey ) ; ckey = NULL ; * len = encoded_pt_len ; * * p = * len ; * p += 1 ; memcpy ( * p , encodedPoint , * len ) ; * len += 1 ; OPENSSL_free ( encodedPoint ) ; return 1 ; err : EVP_PKEY_free ( ckey ) ; return 0 ; # else SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_ECDHE , ERR_R_INTERNAL_ERROR ) ; * al = SSL_AD_INTERNAL_ERROR ; return 0 ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ckey == NULL ) { SSLerr ( SSL_F_TLS_CONSTRUCT_CKE_ECDHE , ERR_R_INTERNAL_ERROR ) ; goto err ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2699\n\n```\nCWE-000 static inline int ip6_ufo_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int hh_len , int fragheaderlen , <S2SV_StartBug> int transhdrlen , int mtu , unsigned int flags ) <S2SV_EndBug> { struct sk_buff * skb ; int err ; if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) { skb = sock_alloc_send_skb ( sk , hh_len + fragheaderlen + transhdrlen + 20 , ( flags & MSG_DONTWAIT ) , & err ) ; if ( skb == NULL ) return - ENOMEM ; skb_reserve ( skb , hh_len ) ; skb_put ( skb , fragheaderlen + transhdrlen ) ; skb_reset_network_header ( skb ) ; skb -> transport_header = skb -> network_header + fragheaderlen ; skb -> ip_summed = CHECKSUM_PARTIAL ; skb -> csum = 0 ; } err = skb_append_datato_frags ( sk , skb , getfrag , from , ( length - transhdrlen ) ) ; if ( ! err ) { struct frag_hdr fhdr ; skb_shinfo ( skb ) -> gso_size = ( mtu - fragheaderlen - sizeof ( struct frag_hdr ) ) & ~ 7 ; skb_shinfo ( skb ) -> gso_type = SKB_GSO_UDP ; <S2SV_StartBug> ipv6_select_ident ( & fhdr ) ; <S2SV_EndBug> skb_shinfo ( skb ) -> ip6_frag_id = fhdr . identification ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; return 0 ; } kfree_skb ( skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int flags , struct rt6_info * rt <S2SV_ModStart> ( & fhdr , rt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9120\n\n```\nCWE-416 <S2SV_StartBug> static int ion_handle_put ( struct ion_handle * handle ) <S2SV_EndBug> { struct ion_client * client = handle -> client ; int ret ; mutex_lock ( & client -> lock ) ; <S2SV_StartBug> ret = kref_put ( & handle -> ref , ion_handle_destroy ) ; <S2SV_EndBug> mutex_unlock ( & client -> lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> int ion_handle_put ( <S2SV_ModStart> ; ret = ion_handle_put_nolock ( handle <S2SV_ModEnd> ) ; mutex_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13185\n\n```\nCWE-200 IHEVCD_ERROR_T ihevcd_parse_slice_data ( codec_t * ps_codec ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; WORD32 end_of_slice_flag = 0 ; sps_t * ps_sps ; pps_t * ps_pps ; slice_header_t * ps_slice_hdr ; WORD32 end_of_pic ; tile_t * ps_tile , * ps_tile_prev ; WORD32 i ; WORD32 ctb_addr ; WORD32 tile_idx ; WORD32 cabac_init_idc ; WORD32 ctb_size ; WORD32 num_ctb_in_row ; WORD32 num_min4x4_in_ctb ; WORD32 slice_qp ; WORD32 slice_start_ctb_idx ; WORD32 tile_start_ctb_idx ; ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr_base ; ps_pps = ps_codec -> s_parse . ps_pps_base ; ps_sps = ps_codec -> s_parse . ps_sps_base ; ps_slice_hdr += ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_pps += ps_slice_hdr -> i1_pps_id ; ps_sps += ps_pps -> i1_sps_id ; if ( 0 != ps_codec -> s_parse . i4_cur_slice_idx ) { if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_codec -> s_parse . i4_cur_independent_slice_idx ++ ; if ( MAX_SLICE_HDR_CNT == ps_codec -> s_parse . i4_cur_independent_slice_idx ) ps_codec -> s_parse . i4_cur_independent_slice_idx = 0 ; } } ctb_size = 1 << ps_sps -> i1_log2_ctb_size ; num_min4x4_in_ctb = ( ctb_size / 4 ) * ( ctb_size / 4 ) ; num_ctb_in_row = ps_sps -> i2_pic_wd_in_ctb ; if ( 0 == ps_codec -> i4_slice_error ) { ps_codec -> s_parse . i4_ctb_x = ps_slice_hdr -> i2_ctb_x ; ps_codec -> s_parse . i4_ctb_y = ps_slice_hdr -> i2_ctb_y ; } ps_codec -> s_parse . ps_pps = ps_pps ; ps_codec -> s_parse . ps_sps = ps_sps ; ps_codec -> s_parse . ps_slice_hdr = ps_slice_hdr ; ihevcd_get_tile_pos ( ps_pps , ps_sps , ps_codec -> s_parse . i4_ctb_x , ps_codec -> s_parse . i4_ctb_y , & ps_codec -> s_parse . i4_ctb_tile_x , & ps_codec -> s_parse . i4_ctb_tile_y , & tile_idx ) ; ps_codec -> s_parse . ps_tile = ps_pps -> ps_tile + tile_idx ; ps_codec -> s_parse . i4_cur_tile_idx = tile_idx ; ps_tile = ps_codec -> s_parse . ps_tile ; if ( tile_idx ) ps_tile_prev = ps_tile - 1 ; else ps_tile_prev = ps_tile ; if ( 0 == ps_codec -> i4_slice_error ) { if ( 1 == ps_slice_hdr -> i1_dependent_slice_flag ) { if ( ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) && ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) { ps_codec -> s_parse . i4_ctb_slice_x = 0 ; ps_codec -> s_parse . i4_ctb_slice_y = 0 ; } } if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_codec -> s_parse . i4_ctb_slice_x = 0 ; ps_codec -> s_parse . i4_ctb_slice_y = 0 ; } } if ( ( 0 == ps_codec -> s_parse . i4_ctb_y ) && ( 0 == ps_codec -> s_parse . i4_ctb_x ) ) { ret = ihevcd_parse_pic_init ( ps_codec ) ; RETURN_IF ( ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) , ret ) ; ps_codec -> s_parse . pu4_pic_tu_idx [ 0 ] = 0 ; ps_codec -> s_parse . pu4_pic_pu_idx [ 0 ] = 0 ; ps_codec -> s_parse . i4_cur_independent_slice_idx = 0 ; ps_codec -> s_parse . i4_ctb_tile_x = 0 ; ps_codec -> s_parse . i4_ctb_tile_y = 0 ; } { mv_buf_t * ps_mv_buf = ps_codec -> s_parse . ps_cur_mv_buf ; if ( ps_slice_hdr -> i1_num_ref_idx_l1_active != 0 ) { for ( i = 0 ; i < ps_slice_hdr -> i1_num_ref_idx_l1_active ; i ++ ) { ps_mv_buf -> l1_collocated_poc [ ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ] [ i ] = ( ( pic_buf_t * ) ps_slice_hdr -> as_ref_pic_list1 [ i ] . pv_pic_buf ) -> i4_abs_poc ; ps_mv_buf -> u1_l1_collocated_poc_lt [ ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ] [ i ] = ( ( pic_buf_t * ) ps_slice_hdr -> as_ref_pic_list1 [ i ] . pv_pic_buf ) -> u1_used_as_ref ; } } if ( ps_slice_hdr -> i1_num_ref_idx_l0_active != 0 ) { for ( i = 0 ; i < ps_slice_hdr -> i1_num_ref_idx_l0_active ; i ++ ) { ps_mv_buf -> l0_collocated_poc [ ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ] [ i ] = ( ( pic_buf_t * ) ps_slice_hdr -> as_ref_pic_list0 [ i ] . pv_pic_buf ) -> i4_abs_poc ; ps_mv_buf -> u1_l0_collocated_poc_lt [ ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ] [ i ] = ( ( pic_buf_t * ) ps_slice_hdr -> as_ref_pic_list0 [ i ] . pv_pic_buf ) -> u1_used_as_ref ; } } } if ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_x ) || ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) ) { WORD32 cur_poc , ref_list_poc , flag = 1 ; cur_poc = ps_slice_hdr -> i4_abs_pic_order_cnt ; for ( i = 0 ; i < ps_slice_hdr -> i1_num_ref_idx_l0_active ; i ++ ) { ref_list_poc = ( ( mv_buf_t * ) ps_slice_hdr -> as_ref_pic_list0 [ i ] . pv_mv_buf ) -> i4_abs_poc ; if ( ref_list_poc > cur_poc ) { flag = 0 ; break ; } } if ( flag && ( ps_slice_hdr -> i1_slice_type == BSLICE ) ) { for ( i = 0 ; i < ps_slice_hdr -> i1_num_ref_idx_l1_active ; i ++ ) { ref_list_poc = ( ( mv_buf_t * ) ps_slice_hdr -> as_ref_pic_list1 [ i ] . pv_mv_buf ) -> i4_abs_poc ; if ( ref_list_poc > cur_poc ) { flag = 0 ; break ; } } } ps_slice_hdr -> i1_low_delay_flag = flag ; } if ( ps_slice_hdr -> i1_slice_type == ISLICE ) { cabac_init_idc = 0 ; } else if ( ps_slice_hdr -> i1_slice_type == PSLICE ) { cabac_init_idc = ps_slice_hdr -> i1_cabac_init_flag ? 2 : 1 ; } else { cabac_init_idc = ps_slice_hdr -> i1_cabac_init_flag ? 1 : 2 ; } slice_qp = ps_slice_hdr -> i1_slice_qp_delta + ps_pps -> i1_pic_init_qp ; slice_qp = CLIP3 ( slice_qp , 0 , 51 ) ; if ( ( 0 == ps_slice_hdr -> i1_dependent_slice_flag ) || ( ( 1 == ps_slice_hdr -> i1_dependent_slice_flag ) && ( ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) && ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) ) ) { ps_codec -> s_parse . u4_qp = slice_qp ; } if ( ( 1 == ps_slice_hdr -> i1_dependent_slice_flag ) && ( ! ( ( ps_codec -> s_parse . i4_ctb_tile_x == 0 ) && ( ps_codec -> s_parse . i4_ctb_tile_y == 0 ) ) ) ) { if ( ( 0 == ps_pps -> i1_entropy_coding_sync_enabled_flag ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag && ( 0 != ps_codec -> s_parse . i4_ctb_x ) ) ) { ihevcd_cabac_reset ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm ) ; } } else if ( ( 0 == ps_pps -> i1_entropy_coding_sync_enabled_flag ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag && ( 0 != ps_codec -> s_parse . i4_ctb_x ) ) ) { ret = ihevcd_cabac_init ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm , slice_qp , cabac_init_idc , & gau1_ihevc_cab_ctxts [ cabac_init_idc ] [ slice_qp ] [ 0 ] ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } } do { { WORD32 cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; if ( 1 == ps_codec -> i4_num_cores && 0 == cur_ctb_idx % RESET_TU_BUF_NCTB ) { ps_codec -> s_parse . ps_tu = ps_codec -> s_parse . ps_pic_tu ; ps_codec -> s_parse . i4_pic_tu_idx = 0 ; } } end_of_pic = 0 ; ps_codec -> s_parse . i4_ctb_num_pcm_blks = 0 ; if ( ( ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) && ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) && ( ! ( ( ps_tile -> u1_pos_x == 0 ) && ( ps_tile -> u1_pos_y == 0 ) ) ) && ( ! ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_x ) && ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) ) ) ) { slice_qp = ps_slice_hdr -> i1_slice_qp_delta + ps_pps -> i1_pic_init_qp ; slice_qp = CLIP3 ( slice_qp , 0 , 51 ) ; ps_codec -> s_parse . u4_qp = slice_qp ; ihevcd_get_tile_pos ( ps_pps , ps_sps , ps_codec -> s_parse . i4_ctb_x , ps_codec -> s_parse . i4_ctb_y , & ps_codec -> s_parse . i4_ctb_tile_x , & ps_codec -> s_parse . i4_ctb_tile_y , & tile_idx ) ; ps_codec -> s_parse . ps_tile = ps_pps -> ps_tile + tile_idx ; ps_codec -> s_parse . i4_cur_tile_idx = tile_idx ; ps_tile_prev = ps_tile - 1 ; tile_start_ctb_idx = ps_tile -> u1_pos_x + ps_tile -> u1_pos_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; slice_start_ctb_idx = ps_slice_hdr -> i2_ctb_x + ps_slice_hdr -> i2_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; if ( slice_start_ctb_idx < tile_start_ctb_idx ) { ps_codec -> s_parse . i4_ctb_slice_y = ps_tile -> u1_pos_y - ps_slice_hdr -> i2_ctb_y ; if ( ! ( ( ( ps_slice_hdr -> i2_ctb_x + ps_tile_prev -> u2_wd ) % ps_sps -> i2_pic_wd_in_ctb ) == ps_tile -> u1_pos_x ) ) { if ( ps_slice_hdr -> i2_ctb_y <= ps_tile -> u1_pos_y ) { if ( ps_slice_hdr -> i2_ctb_x > ps_tile -> u1_pos_x ) { ps_codec -> s_parse . i4_ctb_slice_y -= 1 ; } } } } if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ret = ihevcd_cabac_init ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm , slice_qp , cabac_init_idc , & gau1_ihevc_cab_ctxts [ cabac_init_idc ] [ slice_qp ] [ 0 ] ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } } } if ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) { if ( 1 < ps_codec -> i4_num_cores ) { proc_job_t s_job ; IHEVCD_ERROR_T ret ; s_job . i4_cmd = CMD_PROCESS ; s_job . i2_ctb_cnt = ( WORD16 ) ps_tile -> u2_wd ; s_job . i2_ctb_x = ( WORD16 ) ps_codec -> s_parse . i4_ctb_x ; s_job . i2_ctb_y = ( WORD16 ) ps_codec -> s_parse . i4_ctb_y ; s_job . i2_slice_idx = ( WORD16 ) ps_codec -> s_parse . i4_cur_slice_idx ; s_job . i4_tu_coeff_data_ofst = ( UWORD8 * ) ps_codec -> s_parse . pv_tu_coeff_data - ( UWORD8 * ) ps_codec -> s_parse . pv_pic_tu_coeff_data ; ret = ihevcd_jobq_queue ( ( jobq_t * ) ps_codec -> s_parse . pv_proc_jobq , & s_job , sizeof ( proc_job_t ) , 1 ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) return ret ; } else { process_ctxt_t * ps_proc = & ps_codec -> as_process [ 0 ] ; WORD32 tu_coeff_data_ofst = ( UWORD8 * ) ps_codec -> s_parse . pv_tu_coeff_data - ( UWORD8 * ) ps_codec -> s_parse . pv_pic_tu_coeff_data ; ps_proc -> i4_ctb_cnt = ps_tile -> u2_wd ; ps_proc -> i4_ctb_x = ps_codec -> s_parse . i4_ctb_x ; ps_proc -> i4_ctb_y = ps_codec -> s_parse . i4_ctb_y ; ps_proc -> i4_cur_slice_idx = ps_codec -> s_parse . i4_cur_slice_idx ; ihevcd_init_proc_ctxt ( ps_proc , tu_coeff_data_ofst ) ; } } if ( ps_pps -> i1_entropy_coding_sync_enabled_flag ) { if ( 0 == ps_codec -> s_parse . i4_ctb_x ) { WORD32 default_ctxt = 0 ; if ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) && ( ! ps_slice_hdr -> i1_dependent_slice_flag ) ) default_ctxt = 1 ; if ( 1 == ps_sps -> i2_pic_wd_in_ctb ) default_ctxt = 1 ; ps_codec -> s_parse . u4_qp = slice_qp ; if ( default_ctxt ) { ret = ihevcd_cabac_init ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm , slice_qp , cabac_init_idc , & gau1_ihevc_cab_ctxts [ cabac_init_idc ] [ slice_qp ] [ 0 ] ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } } else { ret = ihevcd_cabac_init ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm , slice_qp , cabac_init_idc , ( const UWORD8 * ) & ps_codec -> s_parse . s_cabac . au1_ctxt_models_sync ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } } } } if ( 0 == ps_codec -> i4_slice_error ) { if ( ps_slice_hdr -> i1_slice_sao_luma_flag || ps_slice_hdr -> i1_slice_sao_chroma_flag ) ihevcd_parse_sao ( ps_codec ) ; } else { sao_t * ps_sao = ps_codec -> s_parse . ps_pic_sao + ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ps_sps -> i2_pic_wd_in_ctb ; ps_sao -> b3_y_type_idx = 0 ; ps_sao -> b3_cb_type_idx = 0 ; ps_sao -> b3_cr_type_idx = 0 ; } { WORD32 ctb_indx ; ctb_indx = ps_codec -> s_parse . i4_ctb_x + ps_sps -> i2_pic_wd_in_ctb * ps_codec -> s_parse . i4_ctb_y ; ps_codec -> s_parse . s_bs_ctxt . pu1_pic_qp_const_in_ctb [ ctb_indx >> 3 ] |= ( 1 << ( ctb_indx & 7 ) ) ; { UWORD16 * pu1_slice_idx = ps_codec -> s_parse . pu1_slice_idx ; pu1_slice_idx [ ctb_indx ] = ps_codec -> s_parse . i4_cur_independent_slice_idx ; } } if ( 0 == ps_codec -> i4_slice_error ) { tu_t * ps_tu = ps_codec -> s_parse . ps_tu ; WORD32 i4_tu_cnt = ps_codec -> s_parse . s_cu . i4_tu_cnt ; WORD32 i4_pic_tu_idx = ps_codec -> s_parse . i4_pic_tu_idx ; pu_t * ps_pu = ps_codec -> s_parse . ps_pu ; WORD32 i4_pic_pu_idx = ps_codec -> s_parse . i4_pic_pu_idx ; UWORD8 * pu1_tu_coeff_data = ( UWORD8 * ) ps_codec -> s_parse . pv_tu_coeff_data ; ret = ihevcd_parse_coding_quadtree ( ps_codec , ( ps_codec -> s_parse . i4_ctb_x << ps_sps -> i1_log2_ctb_size ) , ( ps_codec -> s_parse . i4_ctb_y << ps_sps -> i1_log2_ctb_size ) , ps_sps -> i1_log2_ctb_size , 0 ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) { <S2SV_StartBug> WORD32 pu_skip_wd , pu_skip_ht ; <S2SV_EndBug> WORD32 rows_remaining , cols_remaining ; WORD32 tu_coeff_data_reset_size ; rows_remaining = ps_sps -> i2_pic_height_in_luma_samples - ( ps_codec -> s_parse . i4_ctb_y << ps_sps -> i1_log2_ctb_size ) ; pu_skip_ht = MIN ( ctb_size , rows_remaining ) ; cols_remaining = ps_sps -> i2_pic_width_in_luma_samples - ( ps_codec -> s_parse . i4_ctb_x << ps_sps -> i1_log2_ctb_size ) ; pu_skip_wd = MIN ( ctb_size , cols_remaining ) ; ps_codec -> s_parse . ps_tu = ps_tu ; ps_codec -> s_parse . s_cu . i4_tu_cnt = i4_tu_cnt ; ps_codec -> s_parse . i4_pic_tu_idx = i4_pic_tu_idx ; ps_codec -> s_parse . ps_pu = ps_pu ; <S2SV_StartBug> ps_codec -> s_parse . i4_pic_pu_idx = i4_pic_pu_idx ; <S2SV_EndBug> ps_tu -> b1_cb_cbf = 0 ; ps_tu -> b1_cr_cbf = 0 ; ps_tu -> b1_y_cbf = 0 ; ps_tu -> b4_pos_x = 0 ; ps_tu -> b4_pos_y = 0 ; ps_tu -> b1_transquant_bypass = 0 ; ps_tu -> b3_size = ( ps_sps -> i1_log2_ctb_size - 2 ) ; ps_tu -> b7_qp = ps_codec -> s_parse . u4_qp ; ps_tu -> b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE ; ps_tu -> b6_luma_intra_mode = INTRA_PRED_NONE ; ps_tu -> b1_first_tu_in_cu = 1 ; tu_coeff_data_reset_size = ( UWORD8 * ) ps_codec -> s_parse . pv_tu_coeff_data - pu1_tu_coeff_data ; memset ( pu1_tu_coeff_data , 0 , tu_coeff_data_reset_size ) ; ps_codec -> s_parse . pv_tu_coeff_data = ( void * ) pu1_tu_coeff_data ; <S2SV_StartBug> ps_codec -> s_parse . ps_tu ++ ; <S2SV_EndBug> ps_codec -> s_parse . s_cu . i4_tu_cnt ++ ; ps_codec -> s_parse . i4_pic_tu_idx ++ ; ps_codec -> s_parse . s_cu . i4_pred_mode = PRED_MODE_SKIP ; ps_codec -> s_parse . s_cu . i4_part_mode = PART_2Nx2N ; ps_pu -> b2_part_idx = 0 ; ps_pu -> b4_pos_x = 0 ; ps_pu -> b4_pos_y = 0 ; ps_pu -> b4_wd = ( pu_skip_wd >> 2 ) - 1 ; ps_pu -> b4_ht = ( pu_skip_ht >> 2 ) - 1 ; ps_pu -> b1_intra_flag = 0 ; ps_pu -> b3_part_mode = ps_codec -> s_parse . s_cu . i4_part_mode ; ps_pu -> b1_merge_flag = 1 ; ps_pu -> b3_merge_idx = 0 ; ps_codec -> s_parse . ps_pu ++ ; ps_codec -> s_parse . i4_pic_pu_idx ++ ; ps_codec -> i4_slice_error = 1 ; end_of_slice_flag = 1 ; ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; } } else { <S2SV_StartBug> tu_t * ps_tu = ps_codec -> s_parse . ps_tu ; <S2SV_EndBug> pu_t * ps_pu = ps_codec -> s_parse . ps_pu ; WORD32 pu_skip_wd , pu_skip_ht ; WORD32 rows_remaining , cols_remaining ; rows_remaining = ps_sps -> i2_pic_height_in_luma_samples - ( ps_codec -> s_parse . i4_ctb_y << ps_sps -> i1_log2_ctb_size ) ; pu_skip_ht = MIN ( ctb_size , rows_remaining ) ; cols_remaining = ps_sps -> i2_pic_width_in_luma_samples - ( ps_codec -> s_parse . i4_ctb_x << ps_sps -> i1_log2_ctb_size ) ; pu_skip_wd = MIN ( ctb_size , cols_remaining ) ; ps_tu -> b1_cb_cbf = 0 ; ps_tu -> b1_cr_cbf = 0 ; ps_tu -> b1_y_cbf = 0 ; ps_tu -> b4_pos_x = 0 ; ps_tu -> b4_pos_y = 0 ; ps_tu -> b1_transquant_bypass = 0 ; ps_tu -> b3_size = ( ps_sps -> i1_log2_ctb_size - 2 ) ; ps_tu -> b7_qp = ps_codec -> s_parse . u4_qp ; ps_tu -> b3_chroma_intra_mode_idx = INTRA_PRED_CHROMA_IDX_NONE ; ps_tu -> b6_luma_intra_mode = INTRA_PRED_NONE ; ps_tu -> b1_first_tu_in_cu = 1 ; ps_codec -> s_parse . ps_tu ++ ; ps_codec -> s_parse . s_cu . i4_tu_cnt ++ ; ps_codec -> s_parse . i4_pic_tu_idx ++ ; ps_codec -> s_parse . s_cu . i4_pred_mode = PRED_MODE_SKIP ; ps_codec -> s_parse . s_cu . i4_part_mode = PART_2Nx2N ; ps_pu -> b2_part_idx = 0 ; ps_pu -> b4_pos_x = 0 ; ps_pu -> b4_pos_y = 0 ; ps_pu -> b4_wd = ( pu_skip_wd >> 2 ) - 1 ; ps_pu -> b4_ht = ( pu_skip_ht >> 2 ) - 1 ; ps_pu -> b1_intra_flag = 0 ; ps_pu -> b3_part_mode = ps_codec -> s_parse . s_cu . i4_part_mode ; ps_pu -> b1_merge_flag = 1 ; ps_pu -> b3_merge_idx = 0 ; ps_codec -> s_parse . ps_pu ++ ; ps_codec -> s_parse . i4_pic_pu_idx ++ ; } if ( 0 == ps_codec -> i4_slice_error ) end_of_slice_flag = ihevcd_cabac_decode_terminate ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm ) ; AEV_TRACE ( \"end_of_slice_flag\" , end_of_slice_flag , ps_codec -> s_parse . s_cabac . u4_range ) ; if ( ps_pps -> i1_tiles_enabled_flag || ps_pps -> i1_entropy_coding_sync_enabled_flag ) { WORD32 end_of_tile = 0 ; WORD32 end_of_tile_row = 0 ; if ( ps_pps -> i1_entropy_coding_sync_enabled_flag || ps_pps -> i1_tiles_enabled_flag ) { if ( 1 == ps_codec -> s_parse . i4_ctb_x ) { WORD32 size = sizeof ( ps_codec -> s_parse . s_cabac . au1_ctxt_models ) ; memcpy ( & ps_codec -> s_parse . s_cabac . au1_ctxt_models_sync , & ps_codec -> s_parse . s_cabac . au1_ctxt_models , size ) ; } } if ( ( ps_codec -> s_parse . i4_ctb_tile_x + 1 ) == ( ps_tile -> u2_wd ) ) { end_of_tile_row = 1 ; if ( ( ps_codec -> s_parse . i4_ctb_tile_y + 1 ) == ps_tile -> u2_ht ) end_of_tile = 1 ; } if ( ( 0 == end_of_slice_flag ) && ( ( ps_pps -> i1_tiles_enabled_flag && end_of_tile ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag && end_of_tile_row ) ) ) { WORD32 end_of_sub_stream_one_bit ; end_of_sub_stream_one_bit = ihevcd_cabac_decode_terminate ( & ps_codec -> s_parse . s_cabac , & ps_codec -> s_parse . s_bitstrm ) ; AEV_TRACE ( \"end_of_sub_stream_one_bit\" , end_of_sub_stream_one_bit , ps_codec -> s_parse . s_cabac . u4_range ) ; if ( ps_codec -> s_parse . s_bitstrm . u4_bit_ofst % 8 ) ihevcd_bits_flush_to_byte_boundary ( & ps_codec -> s_parse . s_bitstrm ) ; UNUSED ( end_of_sub_stream_one_bit ) ; } } { WORD32 ctb_indx ; ctb_addr = ps_codec -> s_parse . i4_ctb_y * num_ctb_in_row + ps_codec -> s_parse . i4_ctb_x ; ctb_indx = ++ ctb_addr ; if ( ( ps_tile -> u2_wd == ( ps_codec -> s_parse . i4_ctb_tile_x + 1 ) ) && ( ps_tile -> u2_wd != ps_sps -> i2_pic_wd_in_ctb ) ) { ctb_indx = ( ps_sps -> i2_pic_wd_in_ctb * ( ps_codec -> s_parse . i4_ctb_tile_y + 1 + ps_tile -> u1_pos_y ) ) + ps_tile -> u1_pos_x ; if ( ps_tile -> u2_ht == ( ps_codec -> s_parse . i4_ctb_tile_y + 1 ) ) { if ( ( ps_tile -> u2_wd + ps_tile -> u1_pos_x == ps_sps -> i2_pic_wd_in_ctb ) && ( ( ps_tile -> u2_ht + ps_tile -> u1_pos_y == ps_sps -> i2_pic_ht_in_ctb ) ) ) { ctb_indx = ctb_addr ; } else { tile_t * ps_next_tile = ps_codec -> s_parse . ps_tile + 1 ; ctb_indx = ps_next_tile -> u1_pos_x + ( ps_next_tile -> u1_pos_y * ps_sps -> i2_pic_wd_in_ctb ) ; } } } ps_codec -> s_parse . pu4_pic_pu_idx [ ctb_indx ] = ps_codec -> s_parse . i4_pic_pu_idx ; ps_codec -> s_parse . i4_next_pu_ctb_cnt = ctb_indx ; ps_codec -> s_parse . pu1_pu_map += num_min4x4_in_ctb ; if ( 1 == ps_codec -> i4_num_cores ) { ctb_indx = ( 0 == ctb_addr % RESET_TU_BUF_NCTB ) ? RESET_TU_BUF_NCTB : ctb_addr % RESET_TU_BUF_NCTB ; if ( ( ps_tile -> u2_wd == ( ps_codec -> s_parse . i4_ctb_tile_x + 1 ) ) && ( ps_tile -> u2_wd != ps_sps -> i2_pic_wd_in_ctb ) ) { ctb_indx = ( ps_sps -> i2_pic_wd_in_ctb * ( ps_codec -> s_parse . i4_ctb_tile_y + 1 + ps_tile -> u1_pos_y ) ) + ps_tile -> u1_pos_x ; if ( ps_tile -> u2_ht == ( ps_codec -> s_parse . i4_ctb_tile_y + 1 ) ) { if ( ( ps_tile -> u2_wd + ps_tile -> u1_pos_x == ps_sps -> i2_pic_wd_in_ctb ) && ( ( ps_tile -> u2_ht + ps_tile -> u1_pos_y == ps_sps -> i2_pic_ht_in_ctb ) ) ) { ctb_indx = ( 0 == ctb_addr % RESET_TU_BUF_NCTB ) ? RESET_TU_BUF_NCTB : ctb_addr % RESET_TU_BUF_NCTB ; } else { tile_t * ps_next_tile = ps_codec -> s_parse . ps_tile + 1 ; ctb_indx = ps_next_tile -> u1_pos_x + ( ps_next_tile -> u1_pos_y * ps_sps -> i2_pic_wd_in_ctb ) ; } } } ps_codec -> s_parse . i4_next_tu_ctb_cnt = ctb_indx ; ps_codec -> s_parse . pu4_pic_tu_idx [ ctb_indx ] = ps_codec -> s_parse . i4_pic_tu_idx ; } else { ctb_indx = ctb_addr ; if ( ( ps_tile -> u2_wd == ( ps_codec -> s_parse . i4_ctb_tile_x + 1 ) ) && ( ps_tile -> u2_wd != ps_sps -> i2_pic_wd_in_ctb ) ) { ctb_indx = ( ps_sps -> i2_pic_wd_in_ctb * ( ps_codec -> s_parse . i4_ctb_tile_y + 1 + ps_tile -> u1_pos_y ) ) + ps_tile -> u1_pos_x ; if ( ps_tile -> u2_ht == ( ps_codec -> s_parse . i4_ctb_tile_y + 1 ) ) { if ( ( ps_tile -> u2_wd + ps_tile -> u1_pos_x == ps_sps -> i2_pic_wd_in_ctb ) && ( ( ps_tile -> u2_ht + ps_tile -> u1_pos_y == ps_sps -> i2_pic_ht_in_ctb ) ) ) { ctb_indx = ctb_addr ; } else { tile_t * ps_next_tile = ps_codec -> s_parse . ps_tile + 1 ; ctb_indx = ps_next_tile -> u1_pos_x + ( ps_next_tile -> u1_pos_y * ps_sps -> i2_pic_wd_in_ctb ) ; } } } ps_codec -> s_parse . i4_next_tu_ctb_cnt = ctb_indx ; ps_codec -> s_parse . pu4_pic_tu_idx [ ctb_indx ] = ps_codec -> s_parse . i4_pic_tu_idx ; } ps_codec -> s_parse . pu1_tu_map += num_min4x4_in_ctb ; } if ( ps_codec -> i4_num_cores <= MV_PRED_NUM_CORES_THRESHOLD ) { WORD8 u1_top_ctb_avail = 1 ; WORD8 u1_left_ctb_avail = 1 ; WORD8 u1_top_lt_ctb_avail = 1 ; WORD8 u1_top_rt_ctb_avail = 1 ; WORD16 i2_wd_in_ctb ; tile_start_ctb_idx = ps_tile -> u1_pos_x + ps_tile -> u1_pos_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; slice_start_ctb_idx = ps_slice_hdr -> i2_ctb_x + ps_slice_hdr -> i2_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; if ( ( slice_start_ctb_idx < tile_start_ctb_idx ) ) { i2_wd_in_ctb = ps_sps -> i2_pic_wd_in_ctb ; } else { i2_wd_in_ctb = ps_tile -> u2_wd ; } if ( ( 0 == ps_codec -> s_parse . i4_ctb_y ) || ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) { u1_top_ctb_avail = 0 ; u1_top_lt_ctb_avail = 0 ; u1_top_rt_ctb_avail = 0 ; } if ( ( 0 == ps_codec -> s_parse . i4_ctb_x ) || ( 0 == ps_codec -> s_parse . i4_ctb_tile_x ) ) { u1_left_ctb_avail = 0 ; u1_top_lt_ctb_avail = 0 ; if ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) || ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) { u1_top_ctb_avail = 0 ; if ( ( i2_wd_in_ctb - 1 ) != ps_codec -> s_parse . i4_ctb_slice_x ) { u1_top_rt_ctb_avail = 0 ; } } } else if ( ps_codec -> s_parse . i4_ctb_x > 0 ) { if ( ( 0 == ps_codec -> s_parse . i4_ctb_slice_y ) || ( 0 == ps_codec -> s_parse . i4_ctb_tile_y ) ) { u1_top_ctb_avail = 0 ; u1_top_lt_ctb_avail = 0 ; if ( 0 == ps_codec -> s_parse . i4_ctb_slice_x ) { u1_left_ctb_avail = 0 ; } if ( ( i2_wd_in_ctb - 1 ) != ps_codec -> s_parse . i4_ctb_slice_x ) { u1_top_rt_ctb_avail = 0 ; } } else if ( ( 1 == ps_codec -> s_parse . i4_ctb_slice_y ) && ( 0 == ps_codec -> s_parse . i4_ctb_slice_x ) ) { u1_top_lt_ctb_avail = 0 ; } } if ( ( ( ps_sps -> i2_pic_wd_in_ctb - 1 ) == ps_codec -> s_parse . i4_ctb_x ) || ( ( ps_tile -> u2_wd - 1 ) == ps_codec -> s_parse . i4_ctb_tile_x ) ) { u1_top_rt_ctb_avail = 0 ; } if ( PSLICE == ps_slice_hdr -> i1_slice_type || BSLICE == ps_slice_hdr -> i1_slice_type ) { mv_ctxt_t s_mv_ctxt ; process_ctxt_t * ps_proc ; UWORD32 * pu4_ctb_top_pu_idx ; UWORD32 * pu4_ctb_left_pu_idx ; UWORD32 * pu4_ctb_top_left_pu_idx ; WORD32 i4_ctb_pu_cnt ; WORD32 cur_ctb_idx ; WORD32 next_ctb_idx ; WORD32 cur_pu_idx ; ps_proc = & ps_codec -> as_process [ ( ps_codec -> i4_num_cores == 1 ) ? 1 : ( ps_codec -> i4_num_cores - 1 ) ] ; cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; next_ctb_idx = ps_codec -> s_parse . i4_next_pu_ctb_cnt ; i4_ctb_pu_cnt = ps_codec -> s_parse . pu4_pic_pu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; cur_pu_idx = ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; pu4_ctb_top_pu_idx = ps_proc -> pu4_pic_pu_idx_top + ( ps_codec -> s_parse . i4_ctb_x * ctb_size / MIN_PU_SIZE ) ; pu4_ctb_left_pu_idx = ps_proc -> pu4_pic_pu_idx_left ; pu4_ctb_top_left_pu_idx = & ps_proc -> u4_ctb_top_left_pu_idx ; { s_mv_ctxt . ps_pps = ps_pps ; s_mv_ctxt . ps_sps = ps_sps ; s_mv_ctxt . ps_slice_hdr = ps_slice_hdr ; s_mv_ctxt . i4_ctb_x = ps_codec -> s_parse . i4_ctb_x ; s_mv_ctxt . i4_ctb_y = ps_codec -> s_parse . i4_ctb_y ; s_mv_ctxt . ps_pu = & ps_codec -> s_parse . ps_pic_pu [ cur_pu_idx ] ; s_mv_ctxt . ps_pic_pu = ps_codec -> s_parse . ps_pic_pu ; s_mv_ctxt . ps_tile = ps_tile ; s_mv_ctxt . pu4_pic_pu_idx_map = ps_proc -> pu4_pic_pu_idx_map ; s_mv_ctxt . pu4_pic_pu_idx = ps_codec -> s_parse . pu4_pic_pu_idx ; s_mv_ctxt . pu1_pic_pu_map = ps_codec -> s_parse . pu1_pic_pu_map ; s_mv_ctxt . i4_ctb_pu_cnt = i4_ctb_pu_cnt ; s_mv_ctxt . i4_ctb_start_pu_idx = cur_pu_idx ; s_mv_ctxt . u1_top_ctb_avail = u1_top_ctb_avail ; s_mv_ctxt . u1_top_rt_ctb_avail = u1_top_rt_ctb_avail ; s_mv_ctxt . u1_top_lt_ctb_avail = u1_top_lt_ctb_avail ; s_mv_ctxt . u1_left_ctb_avail = u1_left_ctb_avail ; } ihevcd_get_mv_ctb ( & s_mv_ctxt , pu4_ctb_top_pu_idx , pu4_ctb_left_pu_idx , pu4_ctb_top_left_pu_idx ) ; } else { WORD32 num_minpu_in_ctb = ( ctb_size / MIN_PU_SIZE ) * ( ctb_size / MIN_PU_SIZE ) ; UWORD8 * pu1_pic_pu_map_ctb = ps_codec -> s_parse . pu1_pic_pu_map + ( ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ps_sps -> i2_pic_wd_in_ctb ) * num_minpu_in_ctb ; process_ctxt_t * ps_proc = & ps_codec -> as_process [ ( ps_codec -> i4_num_cores == 1 ) ? 1 : ( ps_codec -> i4_num_cores - 1 ) ] ; WORD32 row , col ; WORD32 pu_cnt ; WORD32 num_pu_per_ctb ; WORD32 cur_ctb_idx ; WORD32 next_ctb_idx ; WORD32 ctb_start_pu_idx ; UWORD32 * pu4_nbr_pu_idx = ps_proc -> pu4_pic_pu_idx_map ; WORD32 nbr_pu_idx_strd = MAX_CTB_SIZE / MIN_PU_SIZE + 2 ; pu_t * ps_pu ; for ( row = 0 ; row < ctb_size / MIN_PU_SIZE ; row ++ ) { for ( col = 0 ; col < ctb_size / MIN_PU_SIZE ; col ++ ) { pu1_pic_pu_map_ctb [ row * ctb_size / MIN_PU_SIZE + col ] = 0 ; } } cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; next_ctb_idx = ps_codec -> s_parse . i4_next_pu_ctb_cnt ; num_pu_per_ctb = ps_codec -> s_parse . pu4_pic_pu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; ctb_start_pu_idx = ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; ps_pu = & ps_codec -> s_parse . ps_pic_pu [ ctb_start_pu_idx ] ; for ( pu_cnt = 0 ; pu_cnt < num_pu_per_ctb ; pu_cnt ++ , ps_pu ++ ) { UWORD32 cur_pu_idx ; WORD32 pu_ht = ( ps_pu -> b4_ht + 1 ) << 2 ; WORD32 pu_wd = ( ps_pu -> b4_wd + 1 ) << 2 ; cur_pu_idx = ctb_start_pu_idx + pu_cnt ; for ( row = 0 ; row < pu_ht / MIN_PU_SIZE ; row ++ ) for ( col = 0 ; col < pu_wd / MIN_PU_SIZE ; col ++ ) pu4_nbr_pu_idx [ ( 1 + ps_pu -> b4_pos_x + col ) + ( 1 + ps_pu -> b4_pos_y + row ) * nbr_pu_idx_strd ] = cur_pu_idx ; } { WORD32 rows_remaining = ps_sps -> i2_pic_height_in_luma_samples - ( ps_codec -> s_parse . i4_ctb_y << ps_sps -> i1_log2_ctb_size ) ; WORD32 ctb_size_left = MIN ( ctb_size , rows_remaining ) ; ps_proc -> u4_ctb_top_left_pu_idx = ps_proc -> pu4_pic_pu_idx_top [ ( ps_codec -> s_parse . i4_ctb_x * ctb_size / MIN_PU_SIZE ) + ctb_size / MIN_PU_SIZE - 1 ] ; for ( i = 0 ; i < ctb_size / MIN_PU_SIZE ; i ++ ) { ps_proc -> pu4_pic_pu_idx_left [ i ] = pu4_nbr_pu_idx [ ( ctb_size / MIN_PU_SIZE ) + ( i + 1 ) * nbr_pu_idx_strd ] ; ps_proc -> pu4_pic_pu_idx_top [ ( ps_codec -> s_parse . i4_ctb_x * ctb_size / MIN_PU_SIZE ) + i ] = pu4_nbr_pu_idx [ ( ctb_size_left / MIN_PU_SIZE ) * nbr_pu_idx_strd + i + 1 ] ; } } } if ( 0 == ps_codec -> i4_disable_deblk_pic ) { if ( ( 0 == ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ) && ( 0 == ps_codec -> i4_slice_error ) ) { WORD32 i4_ctb_tu_cnt ; WORD32 cur_ctb_idx , next_ctb_idx ; WORD32 cur_pu_idx ; WORD32 cur_tu_idx ; process_ctxt_t * ps_proc ; ps_proc = & ps_codec -> as_process [ ( ps_codec -> i4_num_cores == 1 ) ? 1 : ( ps_codec -> i4_num_cores - 1 ) ] ; cur_ctb_idx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; cur_pu_idx = ps_codec -> s_parse . pu4_pic_pu_idx [ cur_ctb_idx ] ; next_ctb_idx = ps_codec -> s_parse . i4_next_tu_ctb_cnt ; if ( 1 == ps_codec -> i4_num_cores ) { i4_ctb_tu_cnt = ps_codec -> s_parse . pu4_pic_tu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx % RESET_TU_BUF_NCTB ] ; cur_tu_idx = ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx % RESET_TU_BUF_NCTB ] ; } else { i4_ctb_tu_cnt = ps_codec -> s_parse . pu4_pic_tu_idx [ next_ctb_idx ] - ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx ] ; cur_tu_idx = ps_codec -> s_parse . pu4_pic_tu_idx [ cur_ctb_idx ] ; } ps_codec -> s_parse . s_bs_ctxt . ps_pps = ps_codec -> s_parse . ps_pps ; ps_codec -> s_parse . s_bs_ctxt . ps_sps = ps_codec -> s_parse . ps_sps ; ps_codec -> s_parse . s_bs_ctxt . ps_codec = ps_codec ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_tu_cnt = i4_ctb_tu_cnt ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_x = ps_codec -> s_parse . i4_ctb_x ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_y = ps_codec -> s_parse . i4_ctb_y ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_tile_x = ps_codec -> s_parse . i4_ctb_tile_x ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_tile_y = ps_codec -> s_parse . i4_ctb_tile_y ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_slice_x = ps_codec -> s_parse . i4_ctb_slice_x ; ps_codec -> s_parse . s_bs_ctxt . i4_ctb_slice_y = ps_codec -> s_parse . i4_ctb_slice_y ; ps_codec -> s_parse . s_bs_ctxt . ps_tu = & ps_codec -> s_parse . ps_pic_tu [ cur_tu_idx ] ; ps_codec -> s_parse . s_bs_ctxt . ps_pu = & ps_codec -> s_parse . ps_pic_pu [ cur_pu_idx ] ; ps_codec -> s_parse . s_bs_ctxt . pu4_pic_pu_idx_map = ps_proc -> pu4_pic_pu_idx_map ; ps_codec -> s_parse . s_bs_ctxt . i4_next_pu_ctb_cnt = ps_codec -> s_parse . i4_next_pu_ctb_cnt ; ps_codec -> s_parse . s_bs_ctxt . i4_next_tu_ctb_cnt = ps_codec -> s_parse . i4_next_tu_ctb_cnt ; ps_codec -> s_parse . s_bs_ctxt . pu1_slice_idx = ps_codec -> s_parse . pu1_slice_idx ; ps_codec -> s_parse . s_bs_ctxt . ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr ; ps_codec -> s_parse . s_bs_ctxt . ps_tile = ps_codec -> s_parse . ps_tile ; if ( ISLICE == ps_slice_hdr -> i1_slice_type ) { ihevcd_ctb_boundary_strength_islice ( & ps_codec -> s_parse . s_bs_ctxt ) ; } else { ihevcd_ctb_boundary_strength_pbslice ( & ps_codec -> s_parse . s_bs_ctxt ) ; } } else { WORD32 bs_strd = ( ps_sps -> i2_pic_wd_in_ctb + 1 ) * ( ctb_size * ctb_size / 8 / 16 ) ; UWORD32 * pu4_vert_bs = ( UWORD32 * ) ( ( UWORD8 * ) ps_codec -> s_parse . s_bs_ctxt . pu4_pic_vert_bs + ps_codec -> s_parse . i4_ctb_x * ( ctb_size * ctb_size / 8 / 16 ) + ps_codec -> s_parse . i4_ctb_y * bs_strd ) ; UWORD32 * pu4_horz_bs = ( UWORD32 * ) ( ( UWORD8 * ) ps_codec -> s_parse . s_bs_ctxt . pu4_pic_horz_bs + ps_codec -> s_parse . i4_ctb_x * ( ctb_size * ctb_size / 8 / 16 ) + ps_codec -> s_parse . i4_ctb_y * bs_strd ) ; memset ( pu4_vert_bs , 0 , ( ctb_size / 8 + 1 ) * ( ctb_size / 4 ) / 8 * 2 ) ; memset ( pu4_horz_bs , 0 , ( ctb_size / 8 ) * ( ctb_size / 4 ) / 8 * 2 ) ; } } } { sps_t * ps_sps = ps_codec -> s_parse . ps_sps ; UWORD8 * pu1_buf ; WORD32 idx ; idx = ( ps_codec -> s_parse . i4_ctb_x ) ; idx += ( ( ps_codec -> s_parse . i4_ctb_y ) * ps_sps -> i2_pic_wd_in_ctb ) ; pu1_buf = ( ps_codec -> pu1_parse_map + idx ) ; * pu1_buf = 1 ; } ps_codec -> s_parse . i4_ctb_tile_x ++ ; ps_codec -> s_parse . i4_ctb_x ++ ; ps_codec -> s_parse . i4_ctb_slice_x ++ ; if ( ps_pps -> i1_tiles_enabled_flag ) { tile_start_ctb_idx = ps_tile -> u1_pos_x + ps_tile -> u1_pos_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; slice_start_ctb_idx = ps_slice_hdr -> i2_ctb_x + ps_slice_hdr -> i2_ctb_y * ( ps_sps -> i2_pic_wd_in_ctb ) ; if ( ( slice_start_ctb_idx < tile_start_ctb_idx ) ) { if ( ps_codec -> s_parse . i4_ctb_slice_x == ( ps_tile -> u1_pos_x + ps_tile -> u2_wd ) ) { ps_codec -> s_parse . i4_ctb_slice_y ++ ; ps_codec -> s_parse . i4_ctb_slice_x = ps_tile -> u1_pos_x ; } } else if ( ps_codec -> s_parse . i4_ctb_slice_x == ( ps_tile -> u2_wd ) ) { ps_codec -> s_parse . i4_ctb_slice_y ++ ; ps_codec -> s_parse . i4_ctb_slice_x = 0 ; } } else { if ( ps_codec -> s_parse . i4_ctb_slice_x == ps_tile -> u2_wd ) { ps_codec -> s_parse . i4_ctb_slice_y ++ ; ps_codec -> s_parse . i4_ctb_slice_x = 0 ; } } if ( ps_codec -> s_parse . i4_ctb_tile_x == ( ps_tile -> u2_wd ) ) { ps_codec -> s_parse . i4_ctb_tile_x = 0 ; ps_codec -> s_parse . i4_ctb_x = ps_tile -> u1_pos_x ; ps_codec -> s_parse . i4_ctb_tile_y ++ ; ps_codec -> s_parse . i4_ctb_y ++ ; if ( ps_codec -> s_parse . i4_ctb_tile_y == ( ps_tile -> u2_ht ) ) { ps_codec -> s_parse . i4_ctb_tile_y = 0 ; ps_codec -> s_parse . i4_ctb_tile_x = 0 ; ps_codec -> s_parse . ps_tile ++ ; if ( ( ps_tile -> u2_ht + ps_tile -> u1_pos_y == ps_sps -> i2_pic_ht_in_ctb ) && ( ps_tile -> u2_wd + ps_tile -> u1_pos_x == ps_sps -> i2_pic_wd_in_ctb ) ) { end_of_pic = 1 ; ps_codec -> s_parse . i4_ctb_x = 0 ; ps_codec -> s_parse . i4_ctb_y = ps_sps -> i2_pic_ht_in_ctb ; } else { ps_tile = ps_codec -> s_parse . ps_tile ; ps_codec -> s_parse . i4_ctb_x = ps_tile -> u1_pos_x ; ps_codec -> s_parse . i4_ctb_y = ps_tile -> u1_pos_y ; ps_codec -> s_parse . i4_ctb_tile_y = 0 ; ps_codec -> s_parse . i4_ctb_tile_x = 0 ; ps_codec -> s_parse . i4_ctb_slice_x = ps_tile -> u1_pos_x ; ps_codec -> s_parse . i4_ctb_slice_y = ps_tile -> u1_pos_y ; } } } ps_codec -> s_parse . i4_next_ctb_indx = ps_codec -> s_parse . i4_ctb_x + ps_codec -> s_parse . i4_ctb_y * ps_sps -> i2_pic_wd_in_ctb ; if ( ps_codec -> i4_slice_error ) { slice_header_t * ps_slice_hdr_next = ps_slice_hdr + 1 ; WORD32 next_slice_addr = ps_slice_hdr_next -> i2_ctb_x + ps_slice_hdr_next -> i2_ctb_y * ps_sps -> i2_pic_wd_in_ctb ; if ( ps_codec -> s_parse . i4_next_ctb_indx == next_slice_addr ) end_of_slice_flag = 1 ; } if ( ( 1 == ps_codec -> i4_num_cores ) && ( ps_codec -> s_parse . i4_ctb_tile_x == 0 ) ) { process_ctxt_t * ps_proc = & ps_codec -> as_process [ 0 ] ; ps_proc -> i4_ctb_cnt = ps_proc -> ps_tile -> u2_wd ; ihevcd_process ( ps_proc ) ; } if ( ( UWORD8 * ) ps_codec -> s_parse . s_bitstrm . pu1_buf_max + BITSTRM_OFF_THRS < ( ( UWORD8 * ) ps_codec -> s_parse . s_bitstrm . pu4_buf + ( ps_codec -> s_parse . s_bitstrm . u4_bit_ofst / 8 ) ) ) { if ( 0 == ps_codec -> i4_slice_error ) end_of_slice_flag = 1 ; } if ( end_of_pic ) break ; } while ( ! end_of_slice_flag ) ; ps_codec -> i4_slice_error = 0 ; if ( 0 == end_of_pic ) { while ( 1 ) { WORD32 parse_slice_idx ; parse_slice_idx = ps_codec -> s_parse . i4_cur_slice_idx ; parse_slice_idx ++ ; { if ( ( 1 == ps_codec -> i4_num_cores ) || ( 0 != ( parse_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ) ) { ps_codec -> s_parse . i4_cur_slice_idx = parse_slice_idx ; break ; } else { WORD32 ctb_indx = 0 ; while ( ctb_indx != ps_sps -> i4_pic_size_in_ctb ) { WORD32 parse_status = * ( ps_codec -> pu1_parse_map + ctb_indx ) ; volatile WORD32 proc_status = * ( ps_codec -> pu1_proc_map + ctb_indx ) & 1 ; if ( parse_status == proc_status ) ctb_indx ++ ; } ps_codec -> s_parse . i4_cur_slice_idx = parse_slice_idx ; break ; } } } } else { # if FRAME_ILF_PAD if ( FRAME_ILF_PAD && 1 == ps_codec -> i4_num_cores ) { if ( ps_slice_hdr -> i4_abs_pic_order_cnt == 0 ) { DUMP_PRE_ILF ( ps_codec -> as_process [ 0 ] . pu1_cur_pic_luma , ps_codec -> as_process [ 0 ] . pu1_cur_pic_chroma , ps_sps -> i2_pic_width_in_luma_samples , ps_sps -> i2_pic_height_in_luma_samples , ps_codec -> i4_strd ) ; DUMP_BS ( ps_codec -> as_process [ 0 ] . s_bs_ctxt . pu4_pic_vert_bs , ps_codec -> as_process [ 0 ] . s_bs_ctxt . pu4_pic_horz_bs , ps_sps -> i2_pic_wd_in_ctb * ( ctb_size * ctb_size / 8 / 16 ) * ps_sps -> i2_pic_ht_in_ctb , ( ps_sps -> i2_pic_wd_in_ctb + 1 ) * ( ctb_size * ctb_size / 8 / 16 ) * ps_sps -> i2_pic_ht_in_ctb ) ; DUMP_QP ( ps_codec -> as_process [ 0 ] . s_bs_ctxt . pu1_pic_qp , ( ps_sps -> i2_pic_height_in_luma_samples * ps_sps -> i2_pic_width_in_luma_samples ) / ( MIN_CU_SIZE * MIN_CU_SIZE ) ) ; DUMP_QP_CONST_IN_CTB ( ps_codec -> as_process [ 0 ] . s_bs_ctxt . pu1_pic_qp_const_in_ctb , ( ps_sps -> i2_pic_height_in_luma_samples * ps_sps -> i2_pic_width_in_luma_samples ) / ( MIN_CTB_SIZE * MIN_CTB_SIZE ) / 8 ) ; DUMP_NO_LOOP_FILTER ( ps_codec -> as_process [ 0 ] . pu1_pic_no_loop_filter_flag , ( ps_sps -> i2_pic_width_in_luma_samples / MIN_CU_SIZE ) * ( ps_sps -> i2_pic_height_in_luma_samples / MIN_CU_SIZE ) / 8 ) ; DUMP_OFFSETS ( ps_slice_hdr -> i1_beta_offset_div2 , ps_slice_hdr -> i1_tc_offset_div2 , ps_pps -> i1_pic_cb_qp_offset , ps_pps -> i1_pic_cr_qp_offset ) ; } ps_codec -> s_parse . s_deblk_ctxt . ps_pps = ps_codec -> s_parse . ps_pps ; ps_codec -> s_parse . s_deblk_ctxt . ps_sps = ps_codec -> s_parse . ps_sps ; ps_codec -> s_parse . s_deblk_ctxt . ps_codec = ps_codec ; ps_codec -> s_parse . s_deblk_ctxt . ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr ; ps_codec -> s_parse . s_deblk_ctxt . is_chroma_yuv420sp_vu = ( ps_codec -> e_ref_chroma_fmt == IV_YUV_420SP_VU ) ; ps_codec -> s_parse . s_sao_ctxt . ps_pps = ps_codec -> s_parse . ps_pps ; ps_codec -> s_parse . s_sao_ctxt . ps_sps = ps_codec -> s_parse . ps_sps ; ps_codec -> s_parse . s_sao_ctxt . ps_codec = ps_codec ; ps_codec -> s_parse . s_sao_ctxt . ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr ; ihevcd_ilf_pad_frame ( & ps_codec -> s_parse . s_deblk_ctxt , & ps_codec -> s_parse . s_sao_ctxt ) ; } # endif ps_codec -> s_parse . i4_end_of_frame = 1 ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { WORD32 tu_coeff_data_reset_size ; <S2SV_ModEnd> ps_codec -> s_parse <S2SV_ModStart> i4_pic_pu_idx = i4_pic_pu_idx <S2SV_ModEnd> ; tu_coeff_data_reset_size = <S2SV_ModStart> ) pu1_tu_coeff_data ; ihevcd_set_ctb_skip ( ps_codec ) <S2SV_ModEnd> ; ps_codec -> <S2SV_ModStart> } else { ihevcd_set_ctb_skip ( ps_codec ) <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void a2dp_open_ctrl_path ( struct a2dp_stream_common * common ) { int i ; for ( i = 0 ; i < CTRL_CHAN_RETRY_COUNT ; i ++ ) { if ( ( common -> ctrl_fd = skt_connect ( A2DP_CTRL_PATH , common -> buffer_sz ) ) > 0 ) { if ( check_a2dp_ready ( common ) == 0 ) break ; ERROR ( \"error<S2SV_blank>:<S2SV_blank>a2dp<S2SV_blank>not<S2SV_blank>ready,<S2SV_blank>wait<S2SV_blank>250<S2SV_blank>ms<S2SV_blank>and<S2SV_blank>retry\" ) ; <S2SV_StartBug> usleep ( 250000 ) ; <S2SV_EndBug> skt_disconnect ( common -> ctrl_fd ) ; common -> ctrl_fd = AUDIO_SKT_DISCONNECTED ; } <S2SV_StartBug> usleep ( 250000 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"error<S2SV_blank>:<S2SV_blank>a2dp<S2SV_blank>not<S2SV_blank>ready,<S2SV_blank>wait<S2SV_blank>250<S2SV_blank>ms<S2SV_blank>and<S2SV_blank>retry\" ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> usleep ( 250000 ) <S2SV_ModStart> AUDIO_SKT_DISCONNECTED ; } TEMP_FAILURE_RETRY ( <S2SV_ModStart> usleep ( 250000 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void perf_swevent_event ( struct perf_event * event , u64 nr , <S2SV_StartBug> int nmi , struct perf_sample_data * data , <S2SV_EndBug> struct pt_regs * regs ) { struct hw_perf_event * hwc = & event -> hw ; local64_add ( nr , & event -> count ) ; if ( ! regs ) return ; if ( ! is_sampling_event ( event ) ) return ; if ( nr == 1 && hwc -> sample_period == 1 && ! event -> attr . freq ) <S2SV_StartBug> return perf_swevent_overflow ( event , 1 , nmi , data , regs ) ; <S2SV_EndBug> if ( local64_add_negative ( nr , & hwc -> period_left ) ) return ; <S2SV_StartBug> perf_swevent_overflow ( event , 0 , nmi , data , regs ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u64 nr , <S2SV_ModEnd> struct perf_sample_data * <S2SV_ModStart> , 1 , <S2SV_ModEnd> data , regs <S2SV_ModStart> , 0 , <S2SV_ModEnd> data , regs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-5321\n\n```\nCWE-000 static int tty_open ( struct inode * inode , struct file * filp ) { struct tty_struct * tty = NULL ; int noctty , retval ; struct tty_driver * driver ; int index ; dev_t device = inode -> i_rdev ; unsigned saved_flags = filp -> f_flags ; nonseekable_open ( inode , filp ) ; retry_open : noctty = filp -> f_flags & O_NOCTTY ; index = - 1 ; retval = 0 ; mutex_lock ( & tty_mutex ) ; tty_lock ( ) ; if ( device == MKDEV ( TTYAUX_MAJOR , 0 ) ) { tty = get_current_tty ( ) ; if ( ! tty ) { tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; return - ENXIO ; } driver = tty_driver_kref_get ( tty -> driver ) ; index = tty -> index ; filp -> f_flags |= O_NONBLOCK ; tty_kref_put ( tty ) ; goto got_driver ; } # ifdef CONFIG_VT if ( device == MKDEV ( TTY_MAJOR , 0 ) ) { extern struct tty_driver * console_driver ; driver = tty_driver_kref_get ( console_driver ) ; index = fg_console ; noctty = 1 ; goto got_driver ; } # endif if ( device == MKDEV ( TTYAUX_MAJOR , 1 ) ) { struct tty_driver * console_driver = console_device ( & index ) ; if ( console_driver ) { driver = tty_driver_kref_get ( console_driver ) ; if ( driver ) { filp -> f_flags |= O_NONBLOCK ; noctty = 1 ; goto got_driver ; } } tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; return - ENODEV ; } driver = get_tty_driver ( device , & index ) ; if ( ! driver ) { tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; return - ENODEV ; } got_driver : if ( ! tty ) { tty = tty_driver_lookup_tty ( driver , inode , index ) ; if ( IS_ERR ( tty ) ) { tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; <S2SV_StartBug> return PTR_ERR ( tty ) ; <S2SV_EndBug> } } if ( tty ) { retval = tty_reopen ( tty ) ; if ( retval ) tty = ERR_PTR ( retval ) ; } else tty = tty_init_dev ( driver , index , 0 ) ; mutex_unlock ( & tty_mutex ) ; tty_driver_kref_put ( driver ) ; if ( IS_ERR ( tty ) ) { tty_unlock ( ) ; return PTR_ERR ( tty ) ; } retval = tty_add_file ( tty , filp ) ; if ( retval ) { tty_unlock ( ) ; tty_release ( inode , filp ) ; return retval ; } check_tty_count ( tty , \"tty_open\" ) ; if ( tty -> driver -> type == TTY_DRIVER_TYPE_PTY && tty -> driver -> subtype == PTY_TYPE_MASTER ) noctty = 1 ; # ifdef TTY_DEBUG_HANGUP printk ( KERN_DEBUG \"opening<S2SV_blank>%s...\" , tty -> name ) ; # endif if ( tty -> ops -> open ) retval = tty -> ops -> open ( tty , filp ) ; else retval = - ENODEV ; filp -> f_flags = saved_flags ; if ( ! retval && test_bit ( TTY_EXCLUSIVE , & tty -> flags ) && ! capable ( CAP_SYS_ADMIN ) ) retval = - EBUSY ; if ( retval ) { # ifdef TTY_DEBUG_HANGUP printk ( KERN_DEBUG \"error<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>opening<S2SV_blank>%s...\" , retval , tty -> name ) ; # endif tty_unlock ( ) ; tty_release ( inode , filp ) ; if ( retval != - ERESTARTSYS ) return retval ; if ( signal_pending ( current ) ) return retval ; schedule ( ) ; tty_lock ( ) ; if ( filp -> f_op == & hung_up_tty_fops ) filp -> f_op = & tty_fops ; tty_unlock ( ) ; goto retry_open ; } tty_unlock ( ) ; mutex_lock ( & tty_mutex ) ; tty_lock ( ) ; spin_lock_irq ( & current -> sighand -> siglock ) ; if ( ! noctty && current -> signal -> leader && ! current -> signal -> tty && tty -> session == NULL ) __proc_set_tty ( current , tty ) ; spin_unlock_irq ( & current -> sighand -> siglock ) ; tty_unlock ( ) ; mutex_unlock ( & tty_mutex ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tty_mutex ) ; tty_driver_kref_put ( driver ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imageaffinematrixconcat ) { double m1 [ 6 ] ; double m2 [ 6 ] ; double mr [ 6 ] ; zval * * tmp ; zval * z_m1 ; zval * z_m2 ; int i , nelems ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"aa\" , & z_m1 , & z_m2 ) == FAILURE ) { return ; } if ( ( ( nelems = zend_hash_num_elements ( Z_ARRVAL_P ( z_m1 ) ) ) != 6 ) || ( nelems = zend_hash_num_elements ( Z_ARRVAL_P ( z_m2 ) ) ) != 6 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Affine<S2SV_blank>arrays<S2SV_blank>must<S2SV_blank>have<S2SV_blank>six<S2SV_blank>elements\" ) ; RETURN_FALSE ; } for ( i = 0 ; i < 6 ; i ++ ) { if ( zend_hash_index_find ( Z_ARRVAL_P ( z_m1 ) , i , ( void * * ) & tmp ) == SUCCESS ) { switch ( Z_TYPE_PP ( tmp ) ) { case IS_LONG : m1 [ i ] = Z_LVAL_PP ( tmp ) ; break ; case IS_DOUBLE : m1 [ i ] = Z_DVAL_PP ( tmp ) ; break ; case IS_STRING : <S2SV_StartBug> convert_to_double_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> m1 [ i ] = Z_DVAL_PP ( tmp ) ; <S2SV_EndBug> break ; default : php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Invalid<S2SV_blank>type<S2SV_blank>for<S2SV_blank>element<S2SV_blank>%i\" , i ) ; RETURN_FALSE ; } } if ( zend_hash_index_find ( Z_ARRVAL_P ( z_m2 ) , i , ( void * * ) & tmp ) == SUCCESS ) { switch ( Z_TYPE_PP ( tmp ) ) { case IS_LONG : m2 [ i ] = Z_LVAL_PP ( tmp ) ; break ; case IS_DOUBLE : m2 [ i ] = Z_DVAL_PP ( tmp ) ; break ; case IS_STRING : <S2SV_StartBug> convert_to_double_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> m2 [ i ] = Z_DVAL_PP ( tmp ) ; <S2SV_EndBug> break ; default : php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Invalid<S2SV_blank>type<S2SV_blank>for<S2SV_blank>element<S2SV_blank>%i\" , i ) ; RETURN_FALSE ; } } } if ( gdAffineConcat ( mr , m1 , m2 ) != GD_TRUE ) { RETURN_FALSE ; } array_init ( return_value ) ; for ( i = 0 ; i < 6 ; i ++ ) { add_index_double ( return_value , i , mr [ i ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case IS_STRING : { zval dval ; dval = * * tmp ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; m1 <S2SV_ModStart> i ] = Z_DVAL ( dval ) ; } <S2SV_ModEnd> break ; default <S2SV_ModStart> case IS_STRING : { zval dval ; dval = * * tmp ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; m2 <S2SV_ModStart> i ] = Z_DVAL ( dval ) ; } <S2SV_ModEnd> break ; default\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10196\n\n```\nCWE-119 int evutil_parse_sockaddr_port ( const char * ip_as_string , struct sockaddr * out , int * outlen ) { int port ; char buf [ 128 ] ; const char * cp , * addr_part , * port_part ; int is_ipv6 ; cp = strchr ( ip_as_string , ':' ) ; if ( * ip_as_string == '[' ) { <S2SV_StartBug> int len ; <S2SV_EndBug> if ( ! ( cp = strchr ( ip_as_string , ']' ) ) ) { return - 1 ; } <S2SV_StartBug> len = ( int ) ( cp - ( ip_as_string + 1 ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( len > ( int ) sizeof ( buf ) - 1 ) { <S2SV_EndBug> return - 1 ; } memcpy ( buf , ip_as_string + 1 , len ) ; buf [ len ] = '\\\\0' ; addr_part = buf ; if ( cp [ 1 ] == ':' ) port_part = cp + 2 ; else port_part = NULL ; is_ipv6 = 1 ; } else if ( cp && strchr ( cp + 1 , ':' ) ) { is_ipv6 = 1 ; addr_part = ip_as_string ; port_part = NULL ; } else if ( cp ) { is_ipv6 = 0 ; if ( cp - ip_as_string > ( int ) sizeof ( buf ) - 1 ) { return - 1 ; } memcpy ( buf , ip_as_string , cp - ip_as_string ) ; buf [ cp - ip_as_string ] = '\\\\0' ; addr_part = buf ; port_part = cp + 1 ; } else { addr_part = ip_as_string ; port_part = NULL ; is_ipv6 = 0 ; } if ( port_part == NULL ) { port = 0 ; } else { port = atoi ( port_part ) ; if ( port <= 0 || port > 65535 ) { return - 1 ; } } if ( ! addr_part ) return - 1 ; # ifdef AF_INET6 if ( is_ipv6 ) { struct sockaddr_in6 sin6 ; memset ( & sin6 , 0 , sizeof ( sin6 ) ) ; # ifdef EVENT__HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN sin6 . sin6_len = sizeof ( sin6 ) ; # endif sin6 . sin6_family = AF_INET6 ; sin6 . sin6_port = htons ( port ) ; if ( 1 != evutil_inet_pton ( AF_INET6 , addr_part , & sin6 . sin6_addr ) ) return - 1 ; if ( ( int ) sizeof ( sin6 ) > * outlen ) return - 1 ; memset ( out , 0 , * outlen ) ; memcpy ( out , & sin6 , sizeof ( sin6 ) ) ; * outlen = sizeof ( sin6 ) ; return 0 ; } else # endif { struct sockaddr_in sin ; memset ( & sin , 0 , sizeof ( sin ) ) ; # ifdef EVENT__HAVE_STRUCT_SOCKADDR_IN_SIN_LEN sin . sin_len = sizeof ( sin ) ; # endif sin . sin_family = AF_INET ; sin . sin_port = htons ( port ) ; if ( 1 != evutil_inet_pton ( AF_INET , addr_part , & sin . sin_addr ) ) return - 1 ; if ( ( int ) sizeof ( sin ) > * outlen ) return - 1 ; memset ( out , 0 , * outlen ) ; memcpy ( out , & sin , sizeof ( sin ) ) ; * outlen = sizeof ( sin ) ; return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> '[' ) { size_t <S2SV_ModEnd> len ; if <S2SV_ModStart> } len = <S2SV_ModEnd> ( cp - <S2SV_ModStart> ( len > <S2SV_ModEnd> sizeof ( buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 const char * util_acl_to_str ( const sc_acl_entry_t * e ) { static char line [ 80 ] , buf [ 20 ] ; unsigned int acl ; if ( e == NULL ) return \"N/A\" ; line [ 0 ] = 0 ; while ( e != NULL ) { acl = e -> method ; switch ( acl ) { case SC_AC_UNKNOWN : return \"N/A\" ; case SC_AC_NEVER : return \"NEVR\" ; case SC_AC_NONE : return \"NONE\" ; case SC_AC_CHV : strcpy ( buf , \"CHV\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 3 , \"%d\" , e -> key_ref ) ; break ; case SC_AC_TERM : strcpy ( buf , \"TERM\" ) ; break ; case SC_AC_PRO : strcpy ( buf , \"PROT\" ) ; break ; case SC_AC_AUT : strcpy ( buf , \"AUTH\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 4 , \"%d\" , e -> key_ref ) ; break ; case SC_AC_SEN : strcpy ( buf , \"Sec.Env.<S2SV_blank>\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 3 , \"#%d\" , e -> key_ref ) ; break ; case SC_AC_SCB : strcpy ( buf , \"Sec.ControlByte<S2SV_blank>\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 3 , \"Ox%X\" , e -> key_ref ) ; break ; case SC_AC_IDA : strcpy ( buf , \"PKCS#15<S2SV_blank>AuthID<S2SV_blank>\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 3 , \"#%d\" , e -> key_ref ) ; break ; default : strcpy ( buf , \"????\" ) ; break ; } <S2SV_StartBug> strcat ( line , buf ) ; <S2SV_EndBug> <S2SV_StartBug> strcat ( line , \"<S2SV_blank>\" ) ; <S2SV_EndBug> e = e -> next ; } <S2SV_StartBug> line [ strlen ( line ) - 1 ] = 0 ; <S2SV_EndBug> return line ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } strncat ( line , buf , sizeof line ) ; strncat <S2SV_ModEnd> ( line , <S2SV_ModStart> line , \"<S2SV_blank>\" , sizeof line <S2SV_ModStart> } line [ ( sizeof <S2SV_ModEnd> line ) - <S2SV_ModStart> 1 ] = '\\\\0' ; line [ strlen ( line ) - 1 ] =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0205\n\n```\nCWE-119 static inline void queue_unlock ( struct futex_q * q , struct futex_hash_bucket * hb ) { spin_unlock ( & hb -> lock ) ; <S2SV_StartBug> drop_futex_key_refs ( & q -> key ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lock ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t udpProcessDatagram ( NetInterface * interface , IpPseudoHeader * pseudoHeader , const NetBuffer * buffer , size_t offset , NetRxAncillary * ancillary ) { error_t error ; uint_t i ; size_t length ; UdpHeader * header ; Socket * socket ; SocketQueueItem * queueItem ; NetBuffer * p ; length = netBufferGetLength ( buffer ) - offset ; if ( length < sizeof ( UdpHeader ) ) { MIB2_INC_COUNTER32 ( udpGroup . udpInErrors , 1 ) ; UDP_MIB_INC_COUNTER32 ( udpInErrors , 1 ) ; return ERROR_INVALID_HEADER ; } header = netBufferAt ( buffer , offset ) ; if ( header == NULL ) return ERROR_FAILURE ; TRACE_INFO ( \"UDP<S2SV_blank>datagram<S2SV_blank>received<S2SV_blank>(%\" PRIuSIZE \"<S2SV_blank>bytes)...\\\\r\\\\n\" , length ) ; udpDumpHeader ( header ) ; if ( header -> checksum != 0x0000 || pseudoHeader -> length == sizeof ( Ipv6PseudoHeader ) ) { if ( ipCalcUpperLayerChecksumEx ( pseudoHeader -> data , pseudoHeader -> length , buffer , offset , length ) != 0x0000 ) { TRACE_WARNING ( \"Wrong<S2SV_blank>UDP<S2SV_blank>header<S2SV_blank>checksum!\\\\r\\\\n\" ) ; MIB2_INC_COUNTER32 ( udpGroup . udpInErrors , 1 ) ; UDP_MIB_INC_COUNTER32 ( udpInErrors , 1 ) ; return ERROR_WRONG_CHECKSUM ; } } for ( i = 0 ; i < SOCKET_MAX_COUNT ; i ++ ) { socket = socketTable + i ; if ( socket -> type != SOCKET_TYPE_DGRAM ) continue ; if ( socket -> interface && socket -> interface != interface ) continue ; if ( socket -> localPort == 0 || socket -> localPort != ntohs ( header -> destPort ) ) continue ; if ( socket -> remotePort != 0 && socket -> remotePort != ntohs ( header -> srcPort ) ) continue ; # if ( IPV4_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv4PseudoHeader ) ) { if ( socket -> localIpAddr . length != 0 ) { if ( socket -> localIpAddr . length != sizeof ( Ipv4Addr ) ) continue ; if ( socket -> localIpAddr . ipv4Addr != pseudoHeader -> ipv4Data . destAddr ) continue ; } if ( socket -> remoteIpAddr . length != 0 ) { if ( socket -> remoteIpAddr . length != sizeof ( Ipv4Addr ) ) continue ; if ( socket -> remoteIpAddr . ipv4Addr != pseudoHeader -> ipv4Data . srcAddr ) continue ; } } else # endif # if ( IPV6_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv6PseudoHeader ) ) { if ( socket -> localIpAddr . length != 0 ) { if ( socket -> localIpAddr . length != sizeof ( Ipv6Addr ) ) continue ; if ( ! ipv6CompAddr ( & socket -> localIpAddr . ipv6Addr , & pseudoHeader -> ipv6Data . destAddr ) ) continue ; } if ( socket -> remoteIpAddr . length != 0 ) { if ( socket -> remoteIpAddr . length != sizeof ( Ipv6Addr ) ) continue ; if ( ! ipv6CompAddr ( & socket -> remoteIpAddr . ipv6Addr , & pseudoHeader -> ipv6Data . srcAddr ) ) continue ; } } else # endif { continue ; } break ; } offset += sizeof ( UdpHeader ) ; length -= sizeof ( UdpHeader ) ; if ( i >= SOCKET_MAX_COUNT ) { error = udpInvokeRxCallback ( interface , pseudoHeader , header , buffer , offset , ancillary ) ; return error ; } if ( socket -> receiveQueue == NULL ) { p = netBufferAlloc ( sizeof ( SocketQueueItem ) + length ) ; if ( p != NULL ) { queueItem = netBufferAt ( p , 0 ) ; queueItem -> buffer = p ; socket -> receiveQueue = queueItem ; } else { queueItem = NULL ; } } else { queueItem = socket -> receiveQueue ; for ( i = 1 ; queueItem -> next ; i ++ ) { queueItem = queueItem -> next ; } if ( i >= UDP_RX_QUEUE_SIZE ) { MIB2_INC_COUNTER32 ( ifGroup . ifTable [ interface -> index ] . ifInDiscards , 1 ) ; IF_MIB_INC_COUNTER32 ( ifTable [ interface -> index ] . ifInDiscards , 1 ) ; return ERROR_RECEIVE_QUEUE_FULL ; } p = netBufferAlloc ( sizeof ( SocketQueueItem ) + length ) ; if ( p != NULL ) { queueItem -> next = netBufferAt ( p , 0 ) ; queueItem = queueItem -> next ; queueItem -> buffer = p ; } else { queueItem = NULL ; } } if ( queueItem == NULL ) { MIB2_INC_COUNTER32 ( ifGroup . ifTable [ interface -> index ] . ifInDiscards , 1 ) ; IF_MIB_INC_COUNTER32 ( ifTable [ interface -> index ] . ifInDiscards , 1 ) ; return ERROR_OUT_OF_MEMORY ; } queueItem -> next = NULL ; <S2SV_StartBug> queueItem -> srcPort = ntohs ( header -> srcPort ) ; <S2SV_EndBug> # if ( IPV4_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv4PseudoHeader ) ) { queueItem -> srcIpAddr . length = sizeof ( Ipv4Addr ) ; queueItem -> srcIpAddr . ipv4Addr = pseudoHeader -> ipv4Data . srcAddr ; queueItem -> destIpAddr . length = sizeof ( Ipv4Addr ) ; queueItem -> destIpAddr . ipv4Addr = pseudoHeader -> ipv4Data . destAddr ; } # endif # if ( IPV6_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv6PseudoHeader ) ) { queueItem -> srcIpAddr . length = sizeof ( Ipv6Addr ) ; queueItem -> srcIpAddr . ipv6Addr = pseudoHeader -> ipv6Data . srcAddr ; queueItem -> destIpAddr . length = sizeof ( Ipv6Addr ) ; queueItem -> destIpAddr . ipv6Addr = pseudoHeader -> ipv6Data . destAddr ; } # endif queueItem -> offset = sizeof ( SocketQueueItem ) ; netBufferCopy ( queueItem -> buffer , queueItem -> offset , buffer , offset , length ) ; queueItem -> ancillary = * ancillary ; udpUpdateEvents ( socket ) ; MIB2_INC_COUNTER32 ( udpGroup . udpInDatagrams , 1 ) ; UDP_MIB_INC_COUNTER32 ( udpInDatagrams , 1 ) ; UDP_MIB_INC_COUNTER64 ( udpHCInDatagrams , 1 ) ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; queueItem -> interface = interface ; queueItem ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4569\n\n```\nCWE-200 static int snd_timer_user_params ( struct file * file , struct snd_timer_params __user * _params ) { struct snd_timer_user * tu ; struct snd_timer_params params ; struct snd_timer * t ; struct snd_timer_read * tr ; struct snd_timer_tread * ttr ; int err ; tu = file -> private_data ; if ( ! tu -> timeri ) return - EBADFD ; t = tu -> timeri -> timer ; if ( ! t ) return - EBADFD ; if ( copy_from_user ( & params , _params , sizeof ( params ) ) ) return - EFAULT ; if ( ! ( t -> hw . flags & SNDRV_TIMER_HW_SLAVE ) && params . ticks < 1 ) { err = - EINVAL ; goto _end ; } if ( params . queue_size > 0 && ( params . queue_size < 32 || params . queue_size > 1024 ) ) { err = - EINVAL ; goto _end ; } if ( params . filter & ~ ( ( 1 << SNDRV_TIMER_EVENT_RESOLUTION ) | ( 1 << SNDRV_TIMER_EVENT_TICK ) | ( 1 << SNDRV_TIMER_EVENT_START ) | ( 1 << SNDRV_TIMER_EVENT_STOP ) | ( 1 << SNDRV_TIMER_EVENT_CONTINUE ) | ( 1 << SNDRV_TIMER_EVENT_PAUSE ) | ( 1 << SNDRV_TIMER_EVENT_SUSPEND ) | ( 1 << SNDRV_TIMER_EVENT_RESUME ) | ( 1 << SNDRV_TIMER_EVENT_MSTART ) | ( 1 << SNDRV_TIMER_EVENT_MSTOP ) | ( 1 << SNDRV_TIMER_EVENT_MCONTINUE ) | ( 1 << SNDRV_TIMER_EVENT_MPAUSE ) | ( 1 << SNDRV_TIMER_EVENT_MSUSPEND ) | ( 1 << SNDRV_TIMER_EVENT_MRESUME ) ) ) { err = - EINVAL ; goto _end ; } snd_timer_stop ( tu -> timeri ) ; spin_lock_irq ( & t -> lock ) ; tu -> timeri -> flags &= ~ ( SNDRV_TIMER_IFLG_AUTO | SNDRV_TIMER_IFLG_EXCLUSIVE | SNDRV_TIMER_IFLG_EARLY_EVENT ) ; if ( params . flags & SNDRV_TIMER_PSFLG_AUTO ) tu -> timeri -> flags |= SNDRV_TIMER_IFLG_AUTO ; if ( params . flags & SNDRV_TIMER_PSFLG_EXCLUSIVE ) tu -> timeri -> flags |= SNDRV_TIMER_IFLG_EXCLUSIVE ; if ( params . flags & SNDRV_TIMER_PSFLG_EARLY_EVENT ) tu -> timeri -> flags |= SNDRV_TIMER_IFLG_EARLY_EVENT ; spin_unlock_irq ( & t -> lock ) ; if ( params . queue_size > 0 && ( unsigned int ) tu -> queue_size != params . queue_size ) { if ( tu -> tread ) { ttr = kmalloc ( params . queue_size * sizeof ( * ttr ) , GFP_KERNEL ) ; if ( ttr ) { kfree ( tu -> tqueue ) ; tu -> queue_size = params . queue_size ; tu -> tqueue = ttr ; } } else { tr = kmalloc ( params . queue_size * sizeof ( * tr ) , GFP_KERNEL ) ; if ( tr ) { kfree ( tu -> queue ) ; tu -> queue_size = params . queue_size ; tu -> queue = tr ; } } } tu -> qhead = tu -> qtail = tu -> qused = 0 ; if ( tu -> timeri -> flags & SNDRV_TIMER_IFLG_EARLY_EVENT ) { if ( tu -> tread ) { struct snd_timer_tread tread ; <S2SV_StartBug> tread . event = SNDRV_TIMER_EVENT_EARLY ; <S2SV_EndBug> tread . tstamp . tv_sec = 0 ; tread . tstamp . tv_nsec = 0 ; tread . val = 0 ; snd_timer_user_append_to_tqueue ( tu , & tread ) ; } else { struct snd_timer_read * r = & tu -> queue [ 0 ] ; r -> resolution = 0 ; r -> ticks = 0 ; tu -> qused ++ ; tu -> qtail ++ ; } } tu -> filter = params . filter ; tu -> ticks = params . ticks ; err = 0 ; _end : if ( copy_to_user ( _params , & params , sizeof ( params ) ) ) return - EFAULT ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snd_timer_tread tread ; memset ( & tread , 0 , sizeof ( tread ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * iperf_json_printf ( const char * format , ... ) { cJSON * o ; va_list argp ; const char * cp ; char name [ 100 ] ; char * np ; cJSON * j ; o = cJSON_CreateObject ( ) ; if ( o == NULL ) return NULL ; va_start ( argp , format ) ; np = name ; for ( cp = format ; * cp != '\\\\0' ; ++ cp ) { switch ( * cp ) { case '<S2SV_blank>' : break ; case ':' : * np = '\\\\0' ; break ; case '%' : ++ cp ; switch ( * cp ) { case 'b' : j = cJSON_CreateBool ( va_arg ( argp , int ) ) ; break ; case 'd' : <S2SV_StartBug> j = cJSON_CreateInt ( va_arg ( argp , int64_t ) ) ; <S2SV_EndBug> break ; case 'f' : <S2SV_StartBug> j = cJSON_CreateFloat ( va_arg ( argp , double ) ) ; <S2SV_EndBug> break ; case 's' : j = cJSON_CreateString ( va_arg ( argp , char * ) ) ; break ; default : return NULL ; } if ( j == NULL ) return NULL ; cJSON_AddItemToObject ( o , name , j ) ; np = name ; break ; default : * np ++ = * cp ; break ; } } va_end ( argp ) ; return o ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : j = cJSON_CreateNumber <S2SV_ModEnd> ( va_arg ( <S2SV_ModStart> : j = cJSON_CreateNumber <S2SV_ModEnd> ( va_arg (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 <S2SV_StartBug> void options_free ( ) { <S2SV_EndBug> <S2SV_StartBug> parse_global_option ( CMD_FREE , NULL , NULL ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void options_free ( int current ) { GLOBAL_OPTIONS * global = current ? & global_options : & new_global_options ; SERVICE_OPTIONS * service = current ? & service_options : & new_service_options ; <S2SV_ModEnd> parse_global_option ( CMD_FREE <S2SV_ModStart> parse_global_option ( CMD_FREE , global <S2SV_ModStart> NULL ) ; CRYPTO_THREAD_write_lock ( stunnel_locks [ LOCK_SECTIONS ] ) ; while ( service ) { SERVICE_OPTIONS * tmp = service ; service = service -> next ; tmp -> next = NULL ; service_free ( tmp ) ; } CRYPTO_THREAD_unlock ( stunnel_locks [ LOCK_SECTIONS ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static expr_ty <S2SV_StartBug> ast_for_call ( struct compiling * c , const node * n , expr_ty func ) <S2SV_EndBug> { <S2SV_StartBug> int i , nargs , nkeywords , ngens ; <S2SV_EndBug> int ndoublestars ; asdl_seq * args ; asdl_seq * keywords ; REQ ( n , arglist ) ; nargs = 0 ; nkeywords = 0 ; <S2SV_StartBug> ngens = 0 ; <S2SV_EndBug> for ( i = 0 ; i < NCH ( n ) ; i ++ ) { node * ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == argument ) { if ( NCH ( ch ) == 1 ) nargs ++ ; else if ( TYPE ( CHILD ( ch , 1 ) ) == comp_for ) <S2SV_StartBug> ngens ++ ; <S2SV_EndBug> else if ( TYPE ( CHILD ( ch , 0 ) ) == STAR ) nargs ++ ; else nkeywords ++ ; } } <S2SV_StartBug> if ( ngens > 1 || ( ngens && ( nargs || nkeywords ) ) ) { <S2SV_EndBug> ast_error ( c , n , \"Generator<S2SV_blank>expression<S2SV_blank>must<S2SV_blank>be<S2SV_blank>parenthesized<S2SV_blank>\" \"if<S2SV_blank>not<S2SV_blank>sole<S2SV_blank>argument\" ) ; return NULL ; } if ( nargs + nkeywords + ngens > 255 ) { ast_error ( c , n , \"more<S2SV_blank>than<S2SV_blank>255<S2SV_blank>arguments\" ) ; return NULL ; } args = _Ta3_asdl_seq_new ( nargs + ngens , c -> c_arena ) ; if ( ! args ) return NULL ; keywords = _Ta3_asdl_seq_new ( nkeywords , c -> c_arena ) ; if ( ! keywords ) return NULL ; nargs = 0 ; nkeywords = 0 ; ndoublestars = 0 ; for ( i = 0 ; i < NCH ( n ) ; i ++ ) { node * ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == argument ) { expr_ty e ; node * chch = CHILD ( ch , 0 ) ; if ( NCH ( ch ) == 1 ) { if ( nkeywords ) { if ( ndoublestars ) { ast_error ( c , chch , \"positional<S2SV_blank>argument<S2SV_blank>follows<S2SV_blank>\" \"keyword<S2SV_blank>argument<S2SV_blank>unpacking\" ) ; } else { ast_error ( c , chch , \"positional<S2SV_blank>argument<S2SV_blank>follows<S2SV_blank>\" \"keyword<S2SV_blank>argument\" ) ; } return NULL ; } e = ast_for_expr ( c , chch ) ; if ( ! e ) return NULL ; asdl_seq_SET ( args , nargs ++ , e ) ; } else if ( TYPE ( chch ) == STAR ) { expr_ty starred ; if ( ndoublestars ) { ast_error ( c , chch , \"iterable<S2SV_blank>argument<S2SV_blank>unpacking<S2SV_blank>follows<S2SV_blank>\" \"keyword<S2SV_blank>argument<S2SV_blank>unpacking\" ) ; return NULL ; } e = ast_for_expr ( c , CHILD ( ch , 1 ) ) ; if ( ! e ) return NULL ; starred = Starred ( e , Load , LINENO ( chch ) , chch -> n_col_offset , c -> c_arena ) ; if ( ! starred ) return NULL ; asdl_seq_SET ( args , nargs ++ , starred ) ; } else if ( TYPE ( chch ) == DOUBLESTAR ) { keyword_ty kw ; i ++ ; e = ast_for_expr ( c , CHILD ( ch , 1 ) ) ; if ( ! e ) return NULL ; kw = keyword ( NULL , e , c -> c_arena ) ; asdl_seq_SET ( keywords , nkeywords ++ , kw ) ; ndoublestars ++ ; } else if ( TYPE ( CHILD ( ch , 1 ) ) == comp_for ) { e = ast_for_genexp ( c , ch ) ; if ( ! e ) return NULL ; asdl_seq_SET ( args , nargs ++ , e ) ; } else { keyword_ty kw ; identifier key , tmp ; int k ; e = ast_for_expr ( c , chch ) ; if ( ! e ) return NULL ; if ( e -> kind == Lambda_kind ) { ast_error ( c , chch , \"lambda<S2SV_blank>cannot<S2SV_blank>contain<S2SV_blank>assignment\" ) ; return NULL ; } else if ( e -> kind != Name_kind ) { ast_error ( c , chch , \"keyword<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>an<S2SV_blank>expression\" ) ; return NULL ; } else if ( forbidden_name ( c , e -> v . Name . id , ch , 1 ) ) { return NULL ; } key = e -> v . Name . id ; for ( k = 0 ; k < nkeywords ; k ++ ) { tmp = ( ( keyword_ty ) asdl_seq_GET ( keywords , k ) ) -> arg ; if ( tmp && ! PyUnicode_Compare ( tmp , key ) ) { ast_error ( c , chch , \"keyword<S2SV_blank>argument<S2SV_blank>repeated\" ) ; return NULL ; } } e = ast_for_expr ( c , CHILD ( ch , 2 ) ) ; if ( ! e ) return NULL ; kw = keyword ( key , e , c -> c_arena ) ; if ( ! kw ) return NULL ; asdl_seq_SET ( keywords , nkeywords ++ , kw ) ; } } } return Call ( func , args , keywords , func -> lineno , func -> col_offset , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , expr_ty func , bool allowgen <S2SV_ModStart> nargs , nkeywords <S2SV_ModEnd> ; int ndoublestars <S2SV_ModStart> = 0 ; <S2SV_ModEnd> for ( i <S2SV_ModStart> == comp_for ) { nargs ++ ; if ( ! allowgen ) { ast_error ( c , ch , \"invalid<S2SV_blank>syntax\" ) ; return NULL ; } if ( NCH ( n ) > 1 ) { ast_error ( c , ch , \"Generator<S2SV_blank>expression<S2SV_blank>must<S2SV_blank>be<S2SV_blank>parenthesized\" ) ; return NULL ; } } <S2SV_ModEnd> else if ( <S2SV_ModStart> ; } } args = _Ta3_asdl_seq_new ( nargs <S2SV_ModEnd> , c ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17294\n\n```\nCWE-125 static int matchCurrentInput ( const InString * input , int pos , const widechar * passInstructions , int passIC ) { int k ; int kk = pos ; <S2SV_StartBug> for ( k = passIC + 2 ; k < passIC + 2 + passInstructions [ passIC + 1 ] ; k ++ ) <S2SV_EndBug> if ( input -> chars [ kk ] == ENDSEGMENT || passInstructions [ k ] != input -> chars [ kk ++ ] ) return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 2 ; ( ( <S2SV_ModStart> + 1 ] ) && ( kk < input -> length ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-119 char * selaGetCombName ( SELA * sela , l_int32 size , l_int32 direction ) { char * selname ; <S2SV_StartBug> char combname [ L_BUF_SIZE ] ; <S2SV_EndBug> l_int32 i , nsels , sx , sy , found ; SEL * sel ; PROCNAME ( \"selaGetCombName\" ) ; if ( ! sela ) return ( char * ) ERROR_PTR ( \"sela<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( direction != L_HORIZ && direction != L_VERT ) return ( char * ) ERROR_PTR ( \"invalid<S2SV_blank>direction\" , procName , NULL ) ; if ( direction == L_HORIZ ) <S2SV_StartBug> snprintf ( combname , L_BUF_SIZE , \"sel_comb_%dh\" , size ) ; <S2SV_EndBug> else <S2SV_StartBug> snprintf ( combname , L_BUF_SIZE , \"sel_comb_%dv\" , size ) ; <S2SV_EndBug> found = FALSE ; nsels = selaGetCount ( sela ) ; for ( i = 0 ; i < nsels ; i ++ ) { sel = selaGetSel ( sela , i ) ; selGetParameters ( sel , & sy , & sx , NULL , NULL ) ; if ( sy != 1 && sx != 1 ) continue ; selname = selGetName ( sel ) ; if ( ! strcmp ( selname , combname ) ) { found = TRUE ; break ; } } if ( found ) return stringNew ( selname ) ; else return ( char * ) ERROR_PTR ( \"sel<S2SV_blank>not<S2SV_blank>found\" , procName , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char combname [ L_BUFSIZE <S2SV_ModEnd> ] ; l_int32 <S2SV_ModStart> ( combname , L_BUFSIZE <S2SV_ModEnd> , \"sel_comb_%dh\" , <S2SV_ModStart> ( combname , L_BUFSIZE <S2SV_ModEnd> , \"sel_comb_%dv\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14093\n\n```\nCWE-200 int imap_open_connection ( IMAP_DATA * idata ) { if ( mutt_socket_open ( idata -> conn ) < 0 ) return - 1 ; idata -> state = IMAP_CONNECTED ; if ( imap_cmd_step ( idata ) != IMAP_CMD_OK ) { imap_close_connection ( idata ) ; return - 1 ; } if ( ascii_strncasecmp ( \"*<S2SV_blank>OK\" , idata -> buf , 4 ) == 0 ) { if ( ascii_strncasecmp ( \"*<S2SV_blank>OK<S2SV_blank>[CAPABILITY\" , idata -> buf , 16 ) && imap_check_capabilities ( idata ) ) goto bail ; # if defined ( USE_SSL ) if ( ! idata -> conn -> ssf && ( option ( OPTSSLFORCETLS ) || mutt_bit_isset ( idata -> capabilities , STARTTLS ) ) ) { int rc ; if ( option ( OPTSSLFORCETLS ) ) rc = MUTT_YES ; else if ( ( rc = query_quadoption ( OPT_SSLSTARTTLS , _ ( \"Secure<S2SV_blank>connection<S2SV_blank>with<S2SV_blank>TLS?\" ) ) ) == - 1 ) goto err_close_conn ; if ( rc == MUTT_YES ) { if ( ( rc = imap_exec ( idata , \"STARTTLS\" , IMAP_CMD_FAIL_OK ) ) == - 1 ) goto bail ; if ( rc != - 2 ) { if ( mutt_ssl_starttls ( idata -> conn ) ) { mutt_error ( _ ( \"Could<S2SV_blank>not<S2SV_blank>negotiate<S2SV_blank>TLS<S2SV_blank>connection\" ) ) ; mutt_sleep ( 1 ) ; goto err_close_conn ; } else { if ( imap_exec ( idata , \"CAPABILITY\" , 0 ) ) goto bail ; } } } } if ( option ( OPTSSLFORCETLS ) && ! idata -> conn -> ssf ) { mutt_error _ ( \"Encrypted<S2SV_blank>connection<S2SV_blank>unavailable\" ) ; mutt_sleep ( 1 ) ; goto err_close_conn ; } # endif } else if ( ascii_strncasecmp ( \"*<S2SV_blank>PREAUTH\" , idata -> buf , 9 ) == 0 ) { <S2SV_StartBug> idata -> state = IMAP_AUTHENTICATED ; <S2SV_EndBug> if ( imap_check_capabilities ( idata ) != 0 ) goto bail ; FREE ( & idata -> capstr ) ; } else { imap_error ( \"imap_open_connection()\" , idata -> buf ) ; goto bail ; } return 0 ; # if defined ( USE_SSL ) err_close_conn : imap_close_connection ( idata ) ; # endif bail : FREE ( & idata -> capstr ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { # if defined ( USE_SSL ) if ( ! idata -> conn -> ssf ) { if ( option ( OPTSSLFORCETLS ) || ( query_quadoption ( OPT_SSLSTARTTLS , _ ( \"Abort<S2SV_blank>unencrypted<S2SV_blank>PREAUTH<S2SV_blank>connection?\" ) ) != MUTT_NO ) ) { mutt_error _ ( \"Encrypted<S2SV_blank>connection<S2SV_blank>unavailable\" ) ; mutt_sleep ( 1 ) ; goto err_close_conn ; } } # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12146\n\n```\nCWE-362 static ssize_t driver_override_show ( struct device * dev , struct device_attribute * attr , char * buf ) { struct platform_device * pdev = to_platform_device ( dev ) ; <S2SV_StartBug> return sprintf ( buf , \"%s\\\\n\" , pdev -> driver_override ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) ; ssize_t len ; device_lock ( dev ) ; len = <S2SV_ModEnd> sprintf ( buf <S2SV_ModStart> driver_override ) ; device_unlock ( dev ) ; return len ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0178\n\n```\nCWE-20 void initServerConfig ( ) { server . port = REDIS_SERVERPORT ; server . bindaddr = NULL ; server . unixsocket = NULL ; server . ipfd = - 1 ; server . sofd = - 1 ; server . dbnum = REDIS_DEFAULT_DBNUM ; server . verbosity = REDIS_VERBOSE ; server . maxidletime = REDIS_MAXIDLETIME ; server . saveparams = NULL ; server . loading = 0 ; server . logfile = NULL ; server . syslog_enabled = 0 ; server . syslog_ident = zstrdup ( \"redis\" ) ; server . syslog_facility = LOG_LOCAL0 ; server . glueoutputbuf = 1 ; server . daemonize = 0 ; server . appendonly = 0 ; server . appendfsync = APPENDFSYNC_EVERYSEC ; server . no_appendfsync_on_rewrite = 0 ; server . lastfsync = time ( NULL ) ; server . appendfd = - 1 ; server . appendseldb = - 1 ; server . pidfile = zstrdup ( \"/var/run/redis.pid\" ) ; server . dbfilename = zstrdup ( \"dump.rdb\" ) ; server . appendfilename = zstrdup ( \"appendonly.aof\" ) ; server . requirepass = NULL ; server . rdbcompression = 1 ; server . activerehashing = 1 ; server . maxclients = 0 ; server . bpop_blocked_clients = 0 ; server . maxmemory = 0 ; server . maxmemory_policy = REDIS_MAXMEMORY_VOLATILE_LRU ; server . maxmemory_samples = 3 ; <S2SV_StartBug> server . vm_enabled = 0 ; <S2SV_EndBug> <S2SV_StartBug> server . vm_swap_file = zstrdup ( \"/tmp/redis-%p.vm\" ) ; <S2SV_EndBug> server . vm_page_size = 256 ; server . vm_pages = 1024 * 1024 * 100 ; <S2SV_StartBug> server . vm_max_memory = 1024LL * 1024 * 1024 * 1 ; <S2SV_EndBug> server . vm_max_threads = 4 ; server . vm_blocked_clients = 0 ; server . hash_max_zipmap_entries = REDIS_HASH_MAX_ZIPMAP_ENTRIES ; server . hash_max_zipmap_value = REDIS_HASH_MAX_ZIPMAP_VALUE ; server . list_max_ziplist_entries = REDIS_LIST_MAX_ZIPLIST_ENTRIES ; server . list_max_ziplist_value = REDIS_LIST_MAX_ZIPLIST_VALUE ; server . set_max_intset_entries = REDIS_SET_MAX_INTSET_ENTRIES ; server . shutdown_asap = 0 ; updateLRUClock ( ) ; resetServerSaveParams ( ) ; appendServerSaveParams ( 60 * 60 , 1 ) ; appendServerSaveParams ( 300 , 100 ) ; appendServerSaveParams ( 60 , 10000 ) ; server . isslave = 0 ; server . masterauth = NULL ; server . masterhost = NULL ; server . masterport = 6379 ; server . master = NULL ; server . replstate = REDIS_REPL_NONE ; server . repl_serve_stale_data = 1 ; R_Zero = 0.0 ; R_PosInf = 1.0 / R_Zero ; R_NegInf = - 1.0 / R_Zero ; R_Nan = R_Zero / R_Zero ; server . commands = dictCreate ( & commandTableDictType , NULL ) ; populateCommandTable ( ) ; server . delCommand = lookupCommandByCString ( \"del\" ) ; server . multiCommand = lookupCommandByCString ( \"multi\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; server . ds_enabled = 0 ; server . ds_path <S2SV_ModEnd> = zstrdup ( <S2SV_ModStart> = zstrdup ( \"/tmp/redis.ds\" ) ; server . cache_max_memory = 64LL <S2SV_ModEnd> * 1024 * <S2SV_ModStart> 1024 * 1024 ; server . cache_blocked_clients <S2SV_ModEnd> = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static cJSON * create_reference ( cJSON * item ) { <S2SV_StartBug> cJSON * ref ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( ref = cJSON_New_Item ( ) ) ) <S2SV_EndBug> return 0 ; memcpy ( ref , item , sizeof ( cJSON ) ) ; ref -> string = 0 ; ref -> type |= cJSON_IsReference ; ref -> next = ref -> prev = 0 ; return ref ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { cJSON * <S2SV_ModEnd> ref = cJSON_New_Item <S2SV_ModStart> cJSON_New_Item ( ) ; if ( ! ref ) <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1848\n\n```\nCWE-20 static ext3_fsblk_t get_sb_block ( void * * data , struct super_block * sb ) { ext3_fsblk_t sb_block ; char * options = ( char * ) * data ; if ( ! options || strncmp ( options , \"sb=\" , 3 ) != 0 ) return 1 ; options += 3 ; sb_block = simple_strtoul ( options , & options , 0 ) ; if ( * options && * options != ',' ) { <S2SV_StartBug> ext3_msg ( sb , \"error:<S2SV_blank>invalid<S2SV_blank>sb<S2SV_blank>specification:<S2SV_blank>%s\" , <S2SV_EndBug> ( char * ) * data ) ; return 1 ; } if ( * options == ',' ) options ++ ; * data = ( void * ) options ; return sb_block ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sb , KERN_ERR ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14361\n\n```\nCWE-20 static int nntp_fetch_headers ( struct Context * ctx , void * hc , anum_t first , anum_t last , int restore ) { struct NntpData * nntp_data = ctx -> data ; struct FetchCtx fc ; struct Header * hdr = NULL ; char buf [ HUGE_STRING ] ; int rc = 0 ; int oldmsgcount = ctx -> msgcount ; anum_t current ; anum_t first_over = first ; # ifdef USE_HCACHE void * hdata = NULL ; # endif if ( ! last || first > last ) return 0 ; fc . ctx = ctx ; fc . first = first ; fc . last = last ; fc . restore = restore ; <S2SV_StartBug> fc . messages = mutt_mem_calloc ( last - first + 1 , sizeof ( unsigned char ) ) ; <S2SV_EndBug> # ifdef USE_HCACHE fc . hc = hc ; # endif if ( NntpListgroup && nntp_data -> nserv -> hasLISTGROUP && ! nntp_data -> deleted ) { if ( ! ctx -> quiet ) mutt_message ( _ ( \"Fetching<S2SV_blank>list<S2SV_blank>of<S2SV_blank>articles...\" ) ) ; if ( nntp_data -> nserv -> hasLISTGROUPrange ) snprintf ( buf , sizeof ( buf ) , \"LISTGROUP<S2SV_blank>%s<S2SV_blank>%u-%u\\\\r\\\\n\" , nntp_data -> group , first , last ) ; else snprintf ( buf , sizeof ( buf ) , \"LISTGROUP<S2SV_blank>%s\\\\r\\\\n\" , nntp_data -> group ) ; rc = nntp_fetch_lines ( nntp_data , buf , sizeof ( buf ) , NULL , fetch_numbers , & fc ) ; if ( rc > 0 ) { mutt_error ( \"LISTGROUP:<S2SV_blank>%s\" , buf ) ; } if ( rc == 0 ) { for ( current = first ; current <= last && rc == 0 ; current ++ ) { if ( fc . messages [ current - first ] ) continue ; snprintf ( buf , sizeof ( buf ) , \"%u\" , current ) ; if ( nntp_data -> bcache ) { mutt_debug ( 2 , \"#1<S2SV_blank>mutt_bcache_del<S2SV_blank>%s\\\\n\" , buf ) ; mutt_bcache_del ( nntp_data -> bcache , buf ) ; } # ifdef USE_HCACHE if ( fc . hc ) { mutt_debug ( 2 , \"mutt_hcache_delete<S2SV_blank>%s\\\\n\" , buf ) ; mutt_hcache_delete ( fc . hc , buf , strlen ( buf ) ) ; } # endif } } } else { for ( current = first ; current <= last ; current ++ ) fc . messages [ current - first ] = 1 ; } if ( ! ctx -> quiet ) { mutt_progress_init ( & fc . progress , _ ( \"Fetching<S2SV_blank>message<S2SV_blank>headers...\" ) , MUTT_PROGRESS_MSG , ReadInc , last - first + 1 ) ; } for ( current = first ; current <= last && rc == 0 ; current ++ ) { if ( ! ctx -> quiet ) mutt_progress_update ( & fc . progress , current - first + 1 , - 1 ) ; # ifdef USE_HCACHE snprintf ( buf , sizeof ( buf ) , \"%u\" , current ) ; # endif if ( ! fc . messages [ current - first ] ) continue ; if ( ctx -> msgcount >= ctx -> hdrmax ) mx_alloc_memory ( ctx ) ; # ifdef USE_HCACHE hdata = mutt_hcache_fetch ( fc . hc , buf , strlen ( buf ) ) ; if ( hdata ) { mutt_debug ( 2 , \"mutt_hcache_fetch<S2SV_blank>%s\\\\n\" , buf ) ; ctx -> hdrs [ ctx -> msgcount ] = hdr = mutt_hcache_restore ( hdata ) ; mutt_hcache_free ( fc . hc , & hdata ) ; hdr -> data = 0 ; if ( hdr -> deleted && ! restore ) { mutt_header_free ( & hdr ) ; if ( nntp_data -> bcache ) { mutt_debug ( 2 , \"#2<S2SV_blank>mutt_bcache_del<S2SV_blank>%s\\\\n\" , buf ) ; mutt_bcache_del ( nntp_data -> bcache , buf ) ; } continue ; } hdr -> read = false ; hdr -> old = false ; } else # endif if ( nntp_data -> deleted ) continue ; else if ( nntp_data -> nserv -> hasOVER || nntp_data -> nserv -> hasXOVER ) { if ( NntpListgroup && nntp_data -> nserv -> hasLISTGROUP ) break ; else continue ; } else { FILE * fp = mutt_file_mkstemp ( ) ; if ( ! fp ) { mutt_perror ( \"mutt_file_mkstemp()<S2SV_blank>failed!\" ) ; rc = - 1 ; break ; } snprintf ( buf , sizeof ( buf ) , \"HEAD<S2SV_blank>%u\\\\r\\\\n\" , current ) ; rc = nntp_fetch_lines ( nntp_data , buf , sizeof ( buf ) , NULL , fetch_tempfile , fp ) ; if ( rc ) { mutt_file_fclose ( & fp ) ; if ( rc < 0 ) break ; if ( mutt_str_strncmp ( \"423\" , buf , 3 ) != 0 ) { mutt_error ( \"HEAD:<S2SV_blank>%s\" , buf ) ; break ; } if ( nntp_data -> bcache ) { snprintf ( buf , sizeof ( buf ) , \"%u\" , current ) ; mutt_debug ( 2 , \"#3<S2SV_blank>mutt_bcache_del<S2SV_blank>%s\\\\n\" , buf ) ; mutt_bcache_del ( nntp_data -> bcache , buf ) ; } rc = 0 ; continue ; } hdr = ctx -> hdrs [ ctx -> msgcount ] = mutt_header_new ( ) ; hdr -> env = mutt_rfc822_read_header ( fp , hdr , 0 , 0 ) ; hdr -> received = hdr -> date_sent ; mutt_file_fclose ( & fp ) ; } hdr -> index = ctx -> msgcount ++ ; hdr -> read = false ; hdr -> old = false ; hdr -> deleted = false ; hdr -> data = mutt_mem_calloc ( 1 , sizeof ( struct NntpHeaderData ) ) ; NHDR ( hdr ) -> article_num = current ; if ( restore ) hdr -> changed = true ; else { nntp_article_status ( ctx , hdr , NULL , NHDR ( hdr ) -> article_num ) ; if ( ! hdr -> read ) nntp_parse_xref ( ctx , hdr ) ; } if ( current > nntp_data -> last_loaded ) nntp_data -> last_loaded = current ; first_over = current + 1 ; } if ( ! NntpListgroup || ! nntp_data -> nserv -> hasLISTGROUP ) current = first_over ; if ( current <= last && rc == 0 && ! nntp_data -> deleted ) { char * cmd = nntp_data -> nserv -> hasOVER ? \"OVER\" : \"XOVER\" ; snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>%u-%u\\\\r\\\\n\" , cmd , current , last ) ; rc = nntp_fetch_lines ( nntp_data , buf , sizeof ( buf ) , NULL , parse_overview_line , & fc ) ; if ( rc > 0 ) { mutt_error ( \"%s:<S2SV_blank>%s\" , cmd , buf ) ; } } if ( ctx -> msgcount > oldmsgcount ) mx_update_context ( ctx , ctx -> msgcount - oldmsgcount ) ; FREE ( & fc . messages ) ; if ( rc != 0 ) return - 1 ; mutt_clear_error ( ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char ) ) ; if ( fc . messages == NULL ) return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19815\n\n```\nCWE-476 static int f2fs_read_single_page ( struct inode * inode , struct page * page , unsigned nr_pages , struct f2fs_map_blocks * map , struct bio * * bio_ret , sector_t * last_block_in_bio , bool is_readahead ) { struct bio * bio = * bio_ret ; const unsigned blkbits = inode -> i_blkbits ; const unsigned blocksize = 1 << blkbits ; sector_t block_in_file ; sector_t last_block ; sector_t last_block_in_file ; sector_t block_nr ; int ret = 0 ; <S2SV_StartBug> block_in_file = ( sector_t ) page -> index ; <S2SV_EndBug> last_block = block_in_file + nr_pages ; last_block_in_file = ( i_size_read ( inode ) + blocksize - 1 ) >> blkbits ; if ( last_block > last_block_in_file ) last_block = last_block_in_file ; if ( block_in_file >= last_block ) goto zero_out ; if ( ( map -> m_flags & F2FS_MAP_MAPPED ) && block_in_file > map -> m_lblk && block_in_file < ( map -> m_lblk + map -> m_len ) ) goto got_it ; map -> m_lblk = block_in_file ; map -> m_len = last_block - block_in_file ; ret = f2fs_map_blocks ( inode , map , 0 , F2FS_GET_BLOCK_DEFAULT ) ; if ( ret ) goto out ; got_it : if ( ( map -> m_flags & F2FS_MAP_MAPPED ) ) { block_nr = map -> m_pblk + block_in_file - map -> m_lblk ; SetPageMappedToDisk ( page ) ; <S2SV_StartBug> if ( ! PageUptodate ( page ) && ! cleancache_get_page ( page ) ) { <S2SV_EndBug> SetPageUptodate ( page ) ; goto confused ; } if ( ! f2fs_is_valid_blkaddr ( F2FS_I_SB ( inode ) , block_nr , DATA_GENERIC_ENHANCE_READ ) ) { ret = - EFSCORRUPTED ; goto out ; } } else { zero_out : zero_user_segment ( page , 0 , PAGE_SIZE ) ; if ( ! PageUptodate ( page ) ) SetPageUptodate ( page ) ; unlock_page ( page ) ; goto out ; } if ( bio && ( * last_block_in_bio != block_nr - 1 || ! __same_bdev ( F2FS_I_SB ( inode ) , block_nr , bio ) ) ) { submit_and_realloc : __submit_bio ( F2FS_I_SB ( inode ) , bio , DATA ) ; bio = NULL ; } if ( bio == NULL ) { bio = f2fs_grab_read_bio ( inode , block_nr , nr_pages , is_readahead ? REQ_RAHEAD : 0 ) ; if ( IS_ERR ( bio ) ) { ret = PTR_ERR ( bio ) ; bio = NULL ; goto out ; } } f2fs_wait_on_block_writeback ( inode , block_nr ) ; if ( bio_add_page ( bio , page , blocksize , 0 ) < blocksize ) goto submit_and_realloc ; inc_page_count ( F2FS_I_SB ( inode ) , F2FS_RD_DATA ) ; ClearPageError ( page ) ; * last_block_in_bio = block_nr ; goto out ; confused : if ( bio ) { __submit_bio ( F2FS_I_SB ( inode ) , bio , DATA ) ; bio = NULL ; } unlock_page ( page ) ; out : * bio_ret = bio ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sector_t ) page_index ( page ) <S2SV_ModEnd> ; last_block = <S2SV_ModStart> page ) && ( ! PageSwapCache ( page ) && <S2SV_ModStart> cleancache_get_page ( page )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_segment_data ( VP8_COMP * cpi , signed char * feature_data , unsigned char abs_delta ) { cpi -> mb . e_mbd . mb_segement_abs_delta = abs_delta ; <S2SV_StartBug> vpx_memcpy ( cpi -> segment_feature_data , feature_data , sizeof ( cpi -> segment_feature_data ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = abs_delta ; memcpy <S2SV_ModEnd> ( cpi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int irda_recvmsg_dgram ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct irda_sock * self = irda_sk ( sk ) ; struct sk_buff * skb ; size_t copied ; int err ; IRDA_DEBUG ( 4 , \"%s()\\\\n\" , __func__ ) ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & err ) ; if ( ! skb ) return err ; skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Received<S2SV_blank>truncated<S2SV_blank>frame<S2SV_blank>(%zd<S2SV_blank><<S2SV_blank>%zd)!\\\\n\" , __func__ , copied , size ) ; copied = size ; msg -> msg_flags |= MSG_TRUNC ; } skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; skb_free_datagram ( sk , skb ) ; if ( self -> rx_flow == FLOW_STOP ) { if ( ( atomic_read ( & sk -> sk_rmem_alloc ) << 2 ) <= sk -> sk_rcvbuf ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Starting<S2SV_blank>IrTTP\\\\n\" , __func__ ) ; self -> rx_flow = FLOW_START ; irttp_flow_request ( self -> tsap , FLOW_START ) ; } } return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> __func__ ) ; <S2SV_ModEnd> skb = skb_recv_datagram\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13040\n\n```\nCWE-125 static int mp_dss_print ( netdissect_options * ndo , const u_char * opt , u_int opt_len , u_char flags ) { const struct mp_dss * mdss = ( const struct mp_dss * ) opt ; <S2SV_StartBug> if ( ( opt_len != mp_dss_len ( mdss , 1 ) && <S2SV_EndBug> opt_len != mp_dss_len ( mdss , 0 ) ) || flags & TH_SYN ) return 0 ; if ( mdss -> flags & MP_DSS_F ) ND_PRINT ( ( ndo , \"<S2SV_blank>fin\" ) ) ; opt += 4 ; <S2SV_StartBug> if ( mdss -> flags & MP_DSS_A ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>ack<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( mdss -> flags & MP_DSS_a ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%\" PRIu64 , EXTRACT_64BITS ( opt ) ) ) ; opt += 8 ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( opt ) ) ) ; <S2SV_EndBug> opt += 4 ; <S2SV_StartBug> } <S2SV_EndBug> } if ( mdss -> flags & MP_DSS_M ) { ND_PRINT ( ( ndo , \"<S2SV_blank>seq<S2SV_blank>\" ) ) ; <S2SV_StartBug> if ( mdss -> flags & MP_DSS_m ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%\" PRIu64 , EXTRACT_64BITS ( opt ) ) ) ; opt += 8 ; <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( opt ) ) ) ; <S2SV_EndBug> opt += 4 ; <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>subseq<S2SV_blank>%u\" , EXTRACT_32BITS ( opt ) ) ) ; opt += 4 ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>len<S2SV_blank>%u\" , EXTRACT_16BITS ( opt ) ) ) ; <S2SV_EndBug> opt += 2 ; <S2SV_StartBug> if ( opt_len == mp_dss_len ( mdss , 1 ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>csum<S2SV_blank>0x%x\" , EXTRACT_16BITS ( opt ) ) ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( opt_len < 4 ) return 0 ; if ( <S2SV_ModEnd> flags & TH_SYN <S2SV_ModStart> += 4 ; opt_len -= 4 ; <S2SV_ModStart> MP_DSS_a ) { if ( opt_len < 8 ) return 0 ; <S2SV_ModStart> += 8 ; opt_len -= 8 ; <S2SV_ModStart> } else { if ( opt_len < 4 ) return 0 ; <S2SV_ModStart> += 4 ; opt_len -= 4 ; <S2SV_ModStart> MP_DSS_m ) { if ( opt_len < 8 ) return 0 ; <S2SV_ModStart> += 8 ; opt_len -= 8 ; <S2SV_ModStart> } else { if ( opt_len < 4 ) return 0 ; <S2SV_ModStart> += 4 ; opt_len -= 4 ; } if ( opt_len < 4 ) return 0 ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> += 4 ; opt_len -= 4 ; if ( opt_len < 2 ) return 0 ; <S2SV_ModStart> += 2 ; opt_len -= 2 ; if ( opt_len >= 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>csum<S2SV_blank>0x%x\" , EXTRACT_16BITS ( opt ) ) ) ; opt_len -= 2 ; } } if ( opt_len != 0 ) return 0 ; return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12458\n\n```\nCWE-20 static void mpeg4_encode_gop_header ( MpegEncContext * s ) { <S2SV_StartBug> int hours , minutes , seconds ; <S2SV_EndBug> int64_t time ; put_bits ( & s -> pb , 16 , 0 ) ; put_bits ( & s -> pb , 16 , GOP_STARTCODE ) ; time = s -> current_picture_ptr -> f -> pts ; if ( s -> reordered_input_picture [ 1 ] ) time = FFMIN ( time , s -> reordered_input_picture [ 1 ] -> f -> pts ) ; time = time * s -> avctx -> time_base . num ; s -> last_time_base = FFUDIV ( time , s -> avctx -> time_base . den ) ; seconds = FFUDIV ( time , s -> avctx -> time_base . den ) ; minutes = FFUDIV ( seconds , 60 ) ; seconds = FFUMOD ( seconds , 60 ) ; hours = FFUDIV ( minutes , 60 ) ; minutes = FFUMOD ( minutes , 60 ) ; hours = FFUMOD ( hours , 24 ) ; put_bits ( & s -> pb , 5 , hours ) ; put_bits ( & s -> pb , 6 , minutes ) ; put_bits ( & s -> pb , 1 , 1 ) ; put_bits ( & s -> pb , 6 , seconds ) ; put_bits ( & s -> pb , 1 , ! ! ( s -> avctx -> flags & AV_CODEC_FLAG_CLOSED_GOP ) ) ; put_bits ( & s -> pb , 1 , 0 ) ; ff_mpeg4_stuffing ( & s -> pb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { int64_t <S2SV_ModEnd> hours , minutes\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3479\n\n```\nCWE-189 static int cdf_check_stream_offset ( const cdf_stream_t * sst , const cdf_header_t * h , const void * p , size_t tail , int line ) { const char * b = ( const char * ) sst -> sst_tab ; const char * e = ( ( const char * ) p ) + tail ; <S2SV_StartBug> ( void ) & line ; <S2SV_EndBug> <S2SV_StartBug> if ( e >= b && ( size_t ) ( e - b ) <= CDF_SEC_SIZE ( h ) * sst -> sst_len ) <S2SV_EndBug> return 0 ; DPRINTF ( ( \"%d:<S2SV_blank>offset<S2SV_blank>begin<S2SV_blank>%p<S2SV_blank><<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>||<S2SV_blank>%\" SIZE_T_FORMAT \"u\" \"<S2SV_blank>><S2SV_blank>%\" SIZE_T_FORMAT \"u<S2SV_blank>[%\" SIZE_T_FORMAT \"u<S2SV_blank>%\" SIZE_T_FORMAT \"u]\\\\n\" , line , b , e , ( size_t ) ( e - b ) , <S2SV_StartBug> CDF_SEC_SIZE ( h ) * sst -> sst_len , CDF_SEC_SIZE ( h ) , sst -> sst_len ) ) ; <S2SV_EndBug> errno = EFTYPE ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + tail ; size_t ss = sst -> sst_dirlen < h -> h_min_size_standard_stream ? CDF_SHORT_SEC_SIZE ( h ) : CDF_SEC_SIZE ( h ) ; <S2SV_ModStart> b ) <= ss <S2SV_ModEnd> * sst -> <S2SV_ModStart> b ) , ss <S2SV_ModEnd> * sst -> <S2SV_ModStart> -> sst_len , ss <S2SV_ModEnd> , sst ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void fdct4_sse2 ( __m128i * in ) { <S2SV_EndBug> <S2SV_StartBug> const __m128i k__cospi_p16_p16 = _mm_set1_epi16 ( cospi_16_64 ) ; <S2SV_EndBug> const __m128i k__cospi_p16_m16 = pair_set_epi16 ( cospi_16_64 , - cospi_16_64 ) ; const __m128i k__cospi_p08_p24 = pair_set_epi16 ( cospi_8_64 , cospi_24_64 ) ; const __m128i k__cospi_p24_m08 = pair_set_epi16 ( cospi_24_64 , - cospi_8_64 ) ; const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32 ( DCT_CONST_ROUNDING ) ; __m128i u [ 4 ] , v [ 4 ] ; u [ 0 ] = _mm_unpacklo_epi16 ( in [ 0 ] , in [ 1 ] ) ; u [ 1 ] = _mm_unpacklo_epi16 ( in [ 3 ] , in [ 2 ] ) ; v [ 0 ] = _mm_add_epi16 ( u [ 0 ] , u [ 1 ] ) ; v [ 1 ] = _mm_sub_epi16 ( u [ 0 ] , u [ 1 ] ) ; u [ 0 ] = _mm_madd_epi16 ( v [ 0 ] , k__cospi_p16_p16 ) ; u [ 1 ] = _mm_madd_epi16 ( v [ 0 ] , k__cospi_p16_m16 ) ; u [ 2 ] = _mm_madd_epi16 ( v [ 1 ] , k__cospi_p08_p24 ) ; u [ 3 ] = _mm_madd_epi16 ( v [ 1 ] , k__cospi_p24_m08 ) ; v [ 0 ] = _mm_add_epi32 ( u [ 0 ] , k__DCT_CONST_ROUNDING ) ; v [ 1 ] = _mm_add_epi32 ( u [ 1 ] , k__DCT_CONST_ROUNDING ) ; v [ 2 ] = _mm_add_epi32 ( u [ 2 ] , k__DCT_CONST_ROUNDING ) ; v [ 3 ] = _mm_add_epi32 ( u [ 3 ] , k__DCT_CONST_ROUNDING ) ; u [ 0 ] = _mm_srai_epi32 ( v [ 0 ] , DCT_CONST_BITS ) ; u [ 1 ] = _mm_srai_epi32 ( v [ 1 ] , DCT_CONST_BITS ) ; u [ 2 ] = _mm_srai_epi32 ( v [ 2 ] , DCT_CONST_BITS ) ; u [ 3 ] = _mm_srai_epi32 ( v [ 3 ] , DCT_CONST_BITS ) ; in [ 0 ] = _mm_packs_epi32 ( u [ 0 ] , u [ 1 ] ) ; in [ 1 ] = _mm_packs_epi32 ( u [ 2 ] , u [ 3 ] ) ; transpose_4x4 ( in ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> = _mm_set1_epi16 ( ( int16_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static int hugetlbfs_fill_super ( struct super_block * sb , void * data , int silent ) { struct inode * inode ; struct dentry * root ; int ret ; struct hugetlbfs_config config ; struct hugetlbfs_sb_info * sbinfo ; save_mount_options ( sb , data ) ; config . nr_blocks = - 1 ; config . nr_inodes = - 1 ; config . uid = current_fsuid ( ) ; config . gid = current_fsgid ( ) ; config . mode = 0755 ; config . hstate = & default_hstate ; ret = hugetlbfs_parse_options ( data , & config ) ; if ( ret ) return ret ; sbinfo = kmalloc ( sizeof ( struct hugetlbfs_sb_info ) , GFP_KERNEL ) ; if ( ! sbinfo ) return - ENOMEM ; sb -> s_fs_info = sbinfo ; sbinfo -> hstate = config . hstate ; spin_lock_init ( & sbinfo -> stat_lock ) ; <S2SV_StartBug> sbinfo -> max_blocks = config . nr_blocks ; <S2SV_EndBug> <S2SV_StartBug> sbinfo -> free_blocks = config . nr_blocks ; <S2SV_EndBug> sbinfo -> max_inodes = config . nr_inodes ; sbinfo -> free_inodes = config . nr_inodes ; sb -> s_maxbytes = MAX_LFS_FILESIZE ; sb -> s_blocksize = huge_page_size ( config . hstate ) ; sb -> s_blocksize_bits = huge_page_shift ( config . hstate ) ; sb -> s_magic = HUGETLBFS_MAGIC ; sb -> s_op = & hugetlbfs_ops ; sb -> s_time_gran = 1 ; inode = hugetlbfs_get_root ( sb , & config ) ; <S2SV_StartBug> if ( ! inode ) <S2SV_EndBug> goto out_free ; <S2SV_StartBug> root = d_alloc_root ( inode ) ; <S2SV_EndBug> if ( ! root ) { iput ( inode ) ; goto out_free ; } sb -> s_root = root ; return 0 ; out_free : <S2SV_StartBug> kfree ( sbinfo ) ; <S2SV_EndBug> return - ENOMEM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sbinfo -> max_inodes = config . nr_inodes ; sbinfo -> free_inodes = config . nr_inodes ; sbinfo -> spool = NULL ; if ( <S2SV_ModEnd> config . nr_blocks <S2SV_ModStart> config . nr_blocks != - 1 ) { sbinfo -> spool = hugepage_new_subpool ( <S2SV_ModEnd> config . nr_blocks <S2SV_ModStart> config . nr_blocks <S2SV_ModEnd> ) ; if <S2SV_ModStart> if ( ! sbinfo -> spool <S2SV_ModEnd> ) goto out_free <S2SV_ModStart> goto out_free ; } sb -> s_maxbytes = MAX_LFS_FILESIZE ; sb -> s_blocksize = huge_page_size ( config . hstate ) ; sb -> s_blocksize_bits = huge_page_shift ( config . hstate ) ; sb -> s_magic = HUGETLBFS_MAGIC ; sb -> s_op = & hugetlbfs_ops ; sb -> s_time_gran = 1 ; inode = hugetlbfs_get_root ( sb , & config ) ; if ( ! inode ) goto out_free ; <S2SV_ModStart> ; out_free : if ( sbinfo -> spool ) kfree ( sbinfo -> spool ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 int jpc_dec_decodepkts ( jpc_dec_t * dec , jas_stream_t * pkthdrstream , jas_stream_t * in ) { jpc_dec_tile_t * tile ; jpc_pi_t * pi ; int ret ; tile = dec -> curtile ; pi = tile -> pi ; for ( ; ; ) { if ( ! tile -> pkthdrstream || jas_stream_peekc ( tile -> pkthdrstream ) == EOF ) { switch ( jpc_dec_lookahead ( in ) ) { case JPC_MS_EOC : case JPC_MS_SOT : return 0 ; break ; case JPC_MS_SOP : case JPC_MS_EPH : case 0 : break ; default : return - 1 ; break ; } } if ( ( ret = jpc_pi_next ( pi ) ) ) { return ret ; } if ( dec -> maxpkts >= 0 && dec -> numpkts >= dec -> maxpkts ) { jas_eprintf ( \"warning:<S2SV_blank>stopping<S2SV_blank>decode<S2SV_blank>prematurely<S2SV_blank>as<S2SV_blank>requested\\\\n\" ) ; return 0 ; } if ( jas_getdbglevel ( ) >= 1 ) { jas_eprintf ( \"packet<S2SV_blank>offset=%08ld<S2SV_blank>prg=%d<S2SV_blank>cmptno=%02d<S2SV_blank>\" \"rlvlno=%02d<S2SV_blank>prcno=%03d<S2SV_blank>lyrno=%02d\\\\n\" , ( long ) jas_stream_getrwcount ( in ) , jpc_pi_prg ( pi ) , jpc_pi_cmptno ( pi ) , jpc_pi_rlvlno ( pi ) , jpc_pi_prcno ( pi ) , jpc_pi_lyrno ( pi ) ) ; } if ( jpc_dec_decodepkt ( dec , pkthdrstream , in , jpc_pi_cmptno ( pi ) , jpc_pi_rlvlno ( pi ) , jpc_pi_prcno ( pi ) , jpc_pi_lyrno ( pi ) ) ) { return - 1 ; } ++ dec -> numpkts ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int evaluate_inter_mode ( unsigned int * sse , int rate2 , int * distortion2 , VP8_COMP * cpi , MACROBLOCK * x , int rd_adj ) { MB_PREDICTION_MODE this_mode = x -> e_mbd . mode_info_context -> mbmi . mode ; int_mv mv = x -> e_mbd . mode_info_context -> mbmi . mv ; <S2SV_StartBug> int this_rd ; <S2SV_EndBug> if ( cpi -> active_map_enabled && x -> active_ptr [ 0 ] == 0 ) { * sse = 0 ; * distortion2 = 0 ; x -> skip = 1 ; return INT_MAX ; } if ( ( this_mode != NEWMV ) || ! ( cpi -> sf . half_pixel_search ) || cpi -> common . full_pixel == 1 ) * distortion2 = vp8_get_inter_mbpred_error ( x , & cpi -> fn_ptr [ BLOCK_16X16 ] , sse , mv ) ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate2 , * distortion2 ) ; <S2SV_StartBug> if ( this_mode == ZEROMV ) <S2SV_EndBug> { <S2SV_StartBug> if ( ( cpi -> ref_frame_flags & VP8_LAST_FRAME & <S2SV_EndBug> cpi -> common . refresh_last_frame ) && x -> e_mbd . mode_info_context -> mbmi . ref_frame != LAST_FRAME ) rd_adj = 100 ; this_rd = ( ( int64_t ) this_rd ) * rd_adj / 100 ; } check_for_encode_breakout ( * sse , x ) ; return this_rd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int this_rd ; int denoise_aggressive = 0 <S2SV_ModStart> distortion2 ) ; # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity > 0 ) { denoise_aggressive = ( cpi -> denoiser . denoiser_mode == kDenoiserOnYUVAggressive ) ? 1 : 0 ; } # endif if ( ! cpi -> oxcf . screen_content_mode && <S2SV_ModEnd> this_mode == ZEROMV <S2SV_ModStart> this_mode == ZEROMV && x -> e_mbd . mode_info_context -> mbmi . ref_frame == LAST_FRAME && ( denoise_aggressive || ( cpi -> closest_reference_frame == LAST_FRAME ) ) <S2SV_ModStart> { if ( x -> is_skin <S2SV_ModEnd> ) rd_adj =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19060\n\n```\nCWE-401 int adis_update_scan_mode ( struct iio_dev * indio_dev , const unsigned long * scan_mask ) { struct adis * adis = iio_device_get_drvdata ( indio_dev ) ; const struct iio_chan_spec * chan ; unsigned int scan_count ; unsigned int i , j ; __be16 * tx , * rx ; kfree ( adis -> xfer ) ; kfree ( adis -> buffer ) ; if ( adis -> burst && adis -> burst -> en ) return adis_update_scan_mode_burst ( indio_dev , scan_mask ) ; scan_count = indio_dev -> scan_bytes / 2 ; adis -> xfer = kcalloc ( scan_count + 1 , sizeof ( * adis -> xfer ) , GFP_KERNEL ) ; if ( ! adis -> xfer ) return - ENOMEM ; adis -> buffer = kcalloc ( indio_dev -> scan_bytes , 2 , GFP_KERNEL ) ; <S2SV_StartBug> if ( ! adis -> buffer ) <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> rx = adis -> buffer ; <S2SV_EndBug> tx = rx + scan_count ; spi_message_init ( & adis -> msg ) ; for ( j = 0 ; j <= scan_count ; j ++ ) { adis -> xfer [ j ] . bits_per_word = 8 ; if ( j != scan_count ) adis -> xfer [ j ] . cs_change = 1 ; adis -> xfer [ j ] . len = 2 ; adis -> xfer [ j ] . delay_usecs = adis -> data -> read_delay ; if ( j < scan_count ) adis -> xfer [ j ] . tx_buf = & tx [ j ] ; if ( j >= 1 ) adis -> xfer [ j ] . rx_buf = & rx [ j - 1 ] ; spi_message_add_tail ( & adis -> xfer [ j ] , & adis -> msg ) ; } chan = indio_dev -> channels ; for ( i = 0 ; i < indio_dev -> num_channels ; i ++ , chan ++ ) { if ( ! test_bit ( chan -> scan_index , scan_mask ) ) continue ; if ( chan -> scan_type . storagebits == 32 ) * tx ++ = cpu_to_be16 ( ( chan -> address + 2 ) << 8 ) ; * tx ++ = cpu_to_be16 ( chan -> address << 8 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> buffer ) { kfree ( adis -> xfer ) ; adis -> xfer = NULL ; <S2SV_ModStart> - ENOMEM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void enc624j600EventHandler ( NetInterface * interface ) { error_t error ; uint16_t status ; uint16_t value ; <S2SV_StartBug> status = enc624j600ReadReg ( interface , ENC624J600_REG_EIR ) ; <S2SV_EndBug> if ( ( status & EIR_LINKIF ) != 0 ) { <S2SV_StartBug> enc624j600ClearBit ( interface , ENC624J600_REG_EIR , EIR_LINKIF ) ; <S2SV_EndBug> <S2SV_StartBug> value = enc624j600ReadReg ( interface , ENC624J600_REG_ESTAT ) ; <S2SV_EndBug> if ( ( value & ESTAT_PHYLNK ) != 0 ) { <S2SV_StartBug> value = enc624j600ReadPhyReg ( interface , ENC624J600_PHY_REG_PHSTAT3 ) ; <S2SV_EndBug> if ( ( value & PHSTAT3_SPDDPX1 ) != 0 ) { interface -> linkSpeed = NIC_LINK_SPEED_100MBPS ; } else { interface -> linkSpeed = NIC_LINK_SPEED_10MBPS ; } <S2SV_StartBug> if ( ( value & PHSTAT3_SPDDPX2 ) != 0 ) <S2SV_EndBug> { interface -> duplexMode = NIC_FULL_DUPLEX_MODE ; } else { interface -> duplexMode = NIC_HALF_DUPLEX_MODE ; } interface -> linkState = TRUE ; enc624j600UpdateMacConfig ( interface ) ; } else { interface -> linkState = FALSE ; } nicNotifyLinkChange ( interface ) ; } <S2SV_StartBug> if ( ( status & EIR_PKTIF ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc624j600ClearBit ( interface , ENC624J600_REG_EIR , EIR_PKTIF ) ; <S2SV_EndBug> do { error = enc624j600ReceivePacket ( interface ) ; } while ( error != ERROR_BUFFER_EMPTY ) ; } <S2SV_StartBug> enc624j600SetBit ( interface , ENC624J600_REG_EIE , EIE_LINKIE | EIE_PKTIE ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC624J600_EIR ) ; if ( ( status & ENC624J600_EIR_LINKIF <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC624J600_EIR , ENC624J600_EIR_LINKIF <S2SV_ModEnd> ) ; value <S2SV_ModStart> ( interface , ENC624J600_ESTAT ) ; if ( ( value & ENC624J600_ESTAT_PHYLNK <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC624J600_PHSTAT3 ) ; if ( ( value & ENC624J600_PHSTAT3_SPDDPX1 <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( value & ENC624J600_PHSTAT3_SPDDPX2 <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( status & ENC624J600_EIR_PKTIF <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC624J600_EIR , ENC624J600_EIR_PKTIF <S2SV_ModEnd> ) ; do <S2SV_ModStart> ( interface , ENC624J600_EIE , ENC624J600_EIE_LINKIE | ENC624J600_EIE_PKTIE <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11383\n\n```\nCWE-908 static void cmd_anal_esil ( RCore * core , const char * input ) { RAnalEsil * esil = core -> anal -> esil ; ut64 addr = core -> offset ; ut64 adr ; char * n , * n1 ; int off ; int stacksize = r_config_get_i ( core -> config , \"esil.stack.depth\" ) ; int iotrap = r_config_get_i ( core -> config , \"esil.iotrap\" ) ; int romem = r_config_get_i ( core -> config , \"esil.romem\" ) ; int stats = r_config_get_i ( core -> config , \"esil.stats\" ) ; int noNULL = r_config_get_i ( core -> config , \"esil.noNULL\" ) ; ut64 until_addr = UT64_MAX ; unsigned int addrsize = r_config_get_i ( core -> config , \"esil.addr.size\" ) ; const char * until_expr = NULL ; RAnalOp * op ; switch ( input [ 0 ] ) { case 'p' : switch ( input [ 1 ] ) { case 'c' : if ( input [ 2 ] == '<S2SV_blank>' ) { r_core_cmdf ( core , \"ar<S2SV_blank>PC=%s\" , input + 3 ) ; r_core_cmd0 ( core , \".ar*\" ) ; } else { eprintf ( \"Missing<S2SV_blank>argument\\\\n\" ) ; } break ; case 0 : r_anal_pin_list ( core -> anal ) ; break ; case '-' : if ( input [ 2 ] ) addr = r_num_math ( core -> num , input + 2 ) ; r_anal_pin_unset ( core -> anal , addr ) ; break ; case '<S2SV_blank>' : r_anal_pin ( core -> anal , addr , input + 2 ) ; break ; default : r_core_cmd_help ( core , help_msg_aep ) ; break ; } break ; case 'r' : cmd_anal_reg ( core , input + 1 ) ; break ; case '*' : if ( core -> anal -> esil ) { r_cons_printf ( \"trap:<S2SV_blank>%d\\\\n\" , core -> anal -> esil -> trap ) ; r_cons_printf ( \"trap-code:<S2SV_blank>%d\\\\n\" , core -> anal -> esil -> trap_code ) ; } else { eprintf ( \"esil<S2SV_blank>vm<S2SV_blank>not<S2SV_blank>initialized.<S2SV_blank>run<S2SV_blank>`aei`\\\\n\" ) ; } break ; case '<S2SV_blank>' : if ( ! esil ) { if ( ! ( core -> anal -> esil = esil = r_anal_esil_new ( stacksize , iotrap , addrsize ) ) ) return ; } r_anal_esil_setup ( esil , core -> anal , romem , stats , noNULL ) ; r_anal_esil_set_pc ( esil , core -> offset ) ; r_anal_esil_parse ( esil , input + 1 ) ; r_anal_esil_dumpstack ( esil ) ; r_anal_esil_stack_free ( esil ) ; break ; case 's' : switch ( input [ 1 ] ) { case '?' : eprintf ( \"See:<S2SV_blank>ae?~aes\\\\n\" ) ; break ; case 'l' : { ut64 pc = r_debug_reg_get ( core -> dbg , \"PC\" ) ; RAnalOp * op = r_core_anal_op ( core , pc ) ; if ( ! op ) { break ; } r_core_esil_step ( core , UT64_MAX , NULL , NULL ) ; r_debug_reg_set ( core -> dbg , \"PC\" , pc + op -> size ) ; r_anal_esil_set_pc ( esil , pc + op -> size ) ; r_core_cmd0 ( core , \".ar*\" ) ; } break ; case 'b' : if ( ! r_core_esil_step_back ( core ) ) { eprintf ( \"cannnot<S2SV_blank>step<S2SV_blank>back\\\\n\" ) ; } r_core_cmd0 ( core , \".ar*\" ) ; break ; case 'u' : if ( input [ 2 ] == 'e' ) { until_expr = input + 3 ; } else { until_addr = r_num_math ( core -> num , input + 2 ) ; } r_core_esil_step ( core , until_addr , until_expr , NULL ) ; r_core_cmd0 ( core , \".ar*\" ) ; break ; case 'o' : op = r_core_anal_op ( core , r_reg_getv ( core -> anal -> reg , r_reg_get_name ( core -> anal -> reg , R_REG_NAME_PC ) ) ) ; if ( op && op -> type == R_ANAL_OP_TYPE_CALL ) { until_addr = op -> addr + op -> size ; } r_core_esil_step ( core , until_addr , until_expr , NULL ) ; r_anal_op_free ( op ) ; r_core_cmd0 ( core , \".ar*\" ) ; break ; case 'p' : n = strchr ( input , '<S2SV_blank>' ) ; n1 = n ? strchr ( n + 1 , '<S2SV_blank>' ) : NULL ; if ( ( ! n || ! n1 ) || ( ! ( n + 1 ) || ! ( n1 + 1 ) ) ) { eprintf ( \"aesp<S2SV_blank>[offset]<S2SV_blank>[num]\\\\n\" ) ; break ; } adr = r_num_math ( core -> num , n + 1 ) ; off = r_num_math ( core -> num , n1 + 1 ) ; cmd_aespc ( core , adr , off ) ; break ; case '<S2SV_blank>' : n = strchr ( input , '<S2SV_blank>' ) ; if ( ! ( n + 1 ) ) { r_core_esil_step ( core , until_addr , until_expr , NULL ) ; break ; } off = r_num_math ( core -> num , n + 1 ) ; cmd_aespc ( core , - 1 , off ) ; break ; default : r_core_esil_step ( core , until_addr , until_expr , NULL ) ; r_core_cmd0 ( core , \".ar*\" ) ; break ; } break ; case 'c' : if ( input [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_aec ) ; } else if ( input [ 1 ] == 's' ) { const char * pc = r_reg_get_name ( core -> anal -> reg , R_REG_NAME_PC ) ; ut64 newaddr ; int ret ; for ( ; ; ) { op = r_core_anal_op ( core , addr ) ; if ( ! op ) { break ; } if ( op -> type == R_ANAL_OP_TYPE_SWI ) { eprintf ( \"syscall<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , addr ) ; break ; } if ( op -> type == R_ANAL_OP_TYPE_TRAP ) { eprintf ( \"trap<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , addr ) ; break ; } ret = r_core_esil_step ( core , UT64_MAX , NULL , NULL ) ; r_anal_op_free ( op ) ; op = NULL ; if ( core -> anal -> esil -> trap || core -> anal -> esil -> trap_code ) { break ; } if ( ! ret ) break ; r_core_cmd0 ( core , \".ar*\" ) ; newaddr = r_num_get ( core -> num , pc ) ; if ( addr == newaddr ) { addr ++ ; break ; } else { addr = newaddr ; } } if ( op ) { r_anal_op_free ( op ) ; } } else { if ( input [ 1 ] == 'u' && input [ 2 ] == 'e' ) until_expr = input + 3 ; else if ( input [ 1 ] == 'u' ) until_addr = r_num_math ( core -> num , input + 2 ) ; else until_expr = \"0\" ; r_core_esil_step ( core , until_addr , until_expr , NULL ) ; r_core_cmd0 ( core , \".ar*\" ) ; } break ; case 'i' : switch ( input [ 1 ] ) { case 's' : case 'm' : cmd_esil_mem ( core , input + 2 ) ; break ; case 'p' : r_core_cmd0 ( core , \"ar<S2SV_blank>PC=$$\" ) ; break ; case '?' : cmd_esil_mem ( core , \"?\" ) ; break ; case '-' : if ( esil ) { sdb_reset ( esil -> stats ) ; } r_anal_esil_free ( esil ) ; core -> anal -> esil = NULL ; break ; case 0 : r_anal_esil_free ( esil ) ; { const char * pc = r_reg_get_name ( core -> anal -> reg , R_REG_NAME_PC ) ; if ( r_reg_getv ( core -> anal -> reg , pc ) == 0LL ) { r_core_cmd0 ( core , \"ar<S2SV_blank>PC=$$\" ) ; } } if ( ! ( esil = core -> anal -> esil = r_anal_esil_new ( stacksize , iotrap , addrsize ) ) ) { return ; } r_anal_esil_setup ( esil , core -> anal , romem , stats , noNULL ) ; esil -> verbose = ( int ) r_config_get_i ( core -> config , \"esil.verbose\" ) ; { const char * s = r_config_get ( core -> config , \"cmd.esil.intr\" ) ; if ( s ) { char * my = strdup ( s ) ; if ( my ) { r_config_set ( core -> config , \"cmd.esil.intr\" , my ) ; free ( my ) ; } } } break ; } break ; case 'k' : switch ( input [ 1 ] ) { case '\\\\0' : input = \"123*\" ; case '<S2SV_blank>' : if ( esil && esil -> stats ) { char * out = sdb_querys ( esil -> stats , NULL , 0 , input + 2 ) ; if ( out ) { r_cons_println ( out ) ; free ( out ) ; } } else { eprintf ( \"esil.stats<S2SV_blank>is<S2SV_blank>empty.<S2SV_blank>Run<S2SV_blank>\\'aei\\'\\\\n\" ) ; } break ; case '-' : if ( esil ) { sdb_reset ( esil -> stats ) ; } break ; } break ; case 'f' : { RListIter * iter ; RAnalBlock * bb ; RAnalFunction * fcn = r_anal_get_fcn_in ( core -> anal , core -> offset , R_ANAL_FCN_TYPE_FCN | R_ANAL_FCN_TYPE_SYM ) ; if ( fcn ) { r_list_foreach ( fcn -> bbs , iter , bb ) { ut64 pc = bb -> addr ; ut64 end = bb -> addr + bb -> size ; RAnalOp op ; ut8 * buf ; int ret , bbs = end - pc ; if ( bbs < 1 || bbs > 0xfffff ) { eprintf ( \"Invalid<S2SV_blank>block<S2SV_blank>size\\\\n\" ) ; } buf = calloc ( 1 , bbs + 1 ) ; r_io_read_at ( core -> io , pc , buf , bbs ) ; int left ; while ( pc < end ) { left = R_MIN ( end - pc , 32 ) ; r_asm_set_pc ( core -> assembler , pc ) ; ret = r_anal_op ( core -> anal , & op , addr , buf , left , R_ANAL_OP_MASK_ALL ) ; if ( ret ) { r_reg_set_value_by_role ( core -> anal -> reg , R_REG_NAME_PC , pc ) ; r_anal_esil_parse ( esil , R_STRBUF_SAFEGET ( & op . esil ) ) ; r_anal_esil_dumpstack ( esil ) ; r_anal_esil_stack_free ( esil ) ; pc += op . size ; } else { pc += 4 ; } } } } else { eprintf ( \"Cannot<S2SV_blank>find<S2SV_blank>function<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , core -> offset ) ; } } break ; case 't' : switch ( input [ 1 ] ) { case 'r' : { RAnalEsil * esil = r_anal_esil_new ( stacksize , iotrap , addrsize ) ; <S2SV_StartBug> if ( ! esil ) <S2SV_EndBug> return ; r_anal_esil_to_reil_setup ( esil , core -> anal , romem , stats ) ; r_anal_esil_set_pc ( esil , core -> offset ) ; r_anal_esil_parse ( esil , input + 2 ) ; r_anal_esil_dumpstack ( esil ) ; r_anal_esil_free ( esil ) ; break ; } case 's' : switch ( input [ 2 ] ) { case 0 : r_anal_esil_session_list ( esil ) ; break ; case '+' : r_anal_esil_session_add ( esil ) ; break ; default : r_core_cmd_help ( core , help_msg_aets ) ; break ; } break ; default : eprintf ( \"Unknown<S2SV_blank>command.<S2SV_blank>Use<S2SV_blank>`aetr`.\\\\n\" ) ; break ; } break ; case 'A' : if ( input [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_aea ) ; } else if ( input [ 1 ] == 'r' ) { cmd_aea ( core , 1 + ( 1 << 1 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'w' ) { cmd_aea ( core , 1 + ( 1 << 2 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'n' ) { cmd_aea ( core , 1 + ( 1 << 3 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'j' ) { cmd_aea ( core , 1 + ( 1 << 4 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == '*' ) { cmd_aea ( core , 1 + ( 1 << 5 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'f' ) { RAnalFunction * fcn = r_anal_get_fcn_in ( core -> anal , core -> offset , - 1 ) ; if ( fcn ) { cmd_aea ( core , 1 , fcn -> addr , r_anal_fcn_size ( fcn ) ) ; } } else { cmd_aea ( core , 1 , core -> offset , ( int ) r_num_math ( core -> num , input + 2 ) ) ; } break ; case 'a' : if ( input [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_aea ) ; } else if ( input [ 1 ] == 'r' ) { cmd_aea ( core , 1 << 1 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'w' ) { cmd_aea ( core , 1 << 2 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'n' ) { cmd_aea ( core , 1 << 3 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'j' ) { cmd_aea ( core , 1 << 4 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == '*' ) { cmd_aea ( core , 1 << 5 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'f' ) { RAnalFunction * fcn = r_anal_get_fcn_in ( core -> anal , core -> offset , - 1 ) ; if ( fcn ) { switch ( input [ 2 ] ) { case 'j' : cmd_aea ( core , 1 << 4 , fcn -> addr , r_anal_fcn_size ( fcn ) ) ; break ; default : cmd_aea ( core , 1 , fcn -> addr , r_anal_fcn_size ( fcn ) ) ; break ; } break ; } } else { const char * arg = input [ 1 ] ? input + 2 : \"\" ; ut64 len = r_num_math ( core -> num , arg ) ; cmd_aea ( core , 0 , core -> offset , len ) ; } break ; case 'x' : { char * hex ; int ret , bufsz ; input = r_str_trim_ro ( input + 1 ) ; hex = strdup ( input ) ; if ( ! hex ) { break ; } RAnalOp aop = R_EMPTY ; bufsz = r_hex_str2bin ( hex , ( ut8 * ) hex ) ; ret = r_anal_op ( core -> anal , & aop , core -> offset , ( const ut8 * ) hex , bufsz , R_ANAL_OP_MASK_ALL ) ; if ( ret > 0 ) { const char * str = R_STRBUF_SAFEGET ( & aop . esil ) ; char * str2 = r_str_newf ( \"<S2SV_blank>%s\" , str ) ; cmd_anal_esil ( core , str2 ) ; free ( str2 ) ; } r_anal_op_fini ( & aop ) ; break ; } case '?' : if ( input [ 1 ] == '?' ) { r_core_cmd_help ( core , help_detail_ae ) ; break ; } default : r_core_cmd_help ( core , help_msg_ae ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! esil ) { return ; } <S2SV_ModEnd> r_anal_esil_to_reil_setup ( esil\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11219\n\n```\nCWE-190 static void controloptions ( lua_State * L , int opt , const char * * fmt , Header * h ) { switch ( opt ) { case '<S2SV_blank>' : return ; case '>' : h -> endian = BIG ; return ; case '<' : h -> endian = LITTLE ; return ; case '!' : { <S2SV_StartBug> int a = getnum ( L , fmt , MAXALIGN ) ; <S2SV_EndBug> if ( ! isp2 ( a ) ) luaL_error ( L , \"alignment<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>2\" , a ) ; h -> align = a ; return ; } default : { const char * msg = lua_pushfstring ( L , \"invalid<S2SV_blank>format<S2SV_blank>option<S2SV_blank>\\'%c\\'\" , opt ) ; luaL_argerror ( L , 1 , msg ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = getnum ( <S2SV_ModEnd> fmt , MAXALIGN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10196\n\n```\nCWE-119 int evutil_parse_sockaddr_port ( const char * ip_as_string , struct sockaddr * out , int * outlen ) { int port ; char buf [ 128 ] ; const char * cp , * addr_part , * port_part ; int is_ipv6 ; cp = strchr ( ip_as_string , ':' ) ; if ( * ip_as_string == '[' ) { <S2SV_StartBug> int len ; <S2SV_EndBug> if ( ! ( cp = strchr ( ip_as_string , ']' ) ) ) { return - 1 ; } <S2SV_StartBug> len = ( int ) ( cp - ( ip_as_string + 1 ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( len > ( int ) sizeof ( buf ) - 1 ) { <S2SV_EndBug> return - 1 ; } memcpy ( buf , ip_as_string + 1 , len ) ; buf [ len ] = '\\\\0' ; addr_part = buf ; if ( cp [ 1 ] == ':' ) port_part = cp + 2 ; else port_part = NULL ; is_ipv6 = 1 ; } else if ( cp && strchr ( cp + 1 , ':' ) ) { is_ipv6 = 1 ; addr_part = ip_as_string ; port_part = NULL ; } else if ( cp ) { is_ipv6 = 0 ; if ( cp - ip_as_string > ( int ) sizeof ( buf ) - 1 ) { return - 1 ; } memcpy ( buf , ip_as_string , cp - ip_as_string ) ; buf [ cp - ip_as_string ] = '\\\\0' ; addr_part = buf ; port_part = cp + 1 ; } else { addr_part = ip_as_string ; port_part = NULL ; is_ipv6 = 0 ; } if ( port_part == NULL ) { port = 0 ; } else { port = atoi ( port_part ) ; if ( port <= 0 || port > 65535 ) { return - 1 ; } } if ( ! addr_part ) return - 1 ; # ifdef AF_INET6 if ( is_ipv6 ) { struct sockaddr_in6 sin6 ; memset ( & sin6 , 0 , sizeof ( sin6 ) ) ; # ifdef EVENT__HAVE_STRUCT_SOCKADDR_IN6_SIN6_LEN sin6 . sin6_len = sizeof ( sin6 ) ; # endif sin6 . sin6_family = AF_INET6 ; sin6 . sin6_port = htons ( port ) ; if ( 1 != evutil_inet_pton ( AF_INET6 , addr_part , & sin6 . sin6_addr ) ) return - 1 ; if ( ( int ) sizeof ( sin6 ) > * outlen ) return - 1 ; memset ( out , 0 , * outlen ) ; memcpy ( out , & sin6 , sizeof ( sin6 ) ) ; * outlen = sizeof ( sin6 ) ; return 0 ; } else # endif { struct sockaddr_in sin ; memset ( & sin , 0 , sizeof ( sin ) ) ; # ifdef EVENT__HAVE_STRUCT_SOCKADDR_IN_SIN_LEN sin . sin_len = sizeof ( sin ) ; # endif sin . sin_family = AF_INET ; sin . sin_port = htons ( port ) ; if ( 1 != evutil_inet_pton ( AF_INET , addr_part , & sin . sin_addr ) ) return - 1 ; if ( ( int ) sizeof ( sin ) > * outlen ) return - 1 ; memset ( out , 0 , * outlen ) ; memcpy ( out , & sin , sizeof ( sin ) ) ; * outlen = sizeof ( sin ) ; return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> '[' ) { size_t <S2SV_ModEnd> len ; if <S2SV_ModStart> } len = <S2SV_ModEnd> ( cp - <S2SV_ModStart> ( len > <S2SV_ModEnd> sizeof ( buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3235\n\n```\nCWE-200 static void set_orig_addr ( struct msghdr * m , struct tipc_msg * msg ) { struct sockaddr_tipc * addr = ( struct sockaddr_tipc * ) m -> msg_name ; if ( addr ) { addr -> family = AF_TIPC ; <S2SV_StartBug> addr -> addrtype = TIPC_ADDR_ID ; <S2SV_EndBug> addr -> addr . id . ref = msg_origport ( msg ) ; addr -> addr . id . node = msg_orignode ( msg ) ; addr -> addr . name . domain = 0 ; addr -> scope = 0 ; m -> msg_namelen = sizeof ( struct sockaddr_tipc ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> addrtype = TIPC_ADDR_ID ; memset ( & addr -> addr , 0 , sizeof ( addr -> addr ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27638\n\n```\nCWE-119 static inline void handle_socket_receive_known ( fastd_socket_t * sock , const fastd_peer_address_t * local_addr , const fastd_peer_address_t * remote_addr , fastd_peer_t * peer , fastd_buffer_t * buffer ) { if ( ! fastd_peer_may_connect ( peer ) ) { fastd_buffer_free ( buffer ) ; return ; } const uint8_t * packet_type = buffer -> data ; switch ( * packet_type ) { case PACKET_DATA : if ( ! fastd_peer_is_established ( peer ) || ! fastd_peer_address_equal ( & peer -> local_address , local_addr ) ) { fastd_buffer_free ( buffer ) ; if ( ! backoff_unknown ( remote_addr ) ) { pr_debug ( \"unexpectedly<S2SV_blank>received<S2SV_blank>payload<S2SV_blank>data<S2SV_blank>from<S2SV_blank>%P[%I]\" , peer , remote_addr ) ; conf . protocol -> handshake_init ( sock , local_addr , remote_addr , NULL ) ; } return ; } conf . protocol -> handle_recv ( peer , buffer ) ; break ; case PACKET_HANDSHAKE : fastd_handshake_handle ( sock , local_addr , remote_addr , peer , buffer ) ; <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer ) ; break ; default : fastd_buffer_free ( buffer ) ; pr_debug ( \"received<S2SV_blank>packet<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>type<S2SV_blank>from<S2SV_blank>%P[%I]\" , peer , remote_addr ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 static void setup_test_dir ( char * tmp_dir , const char * files , ... ) { va_list ap ; assert_se ( mkdtemp ( tmp_dir ) != NULL ) ; va_start ( ap , files ) ; while ( files != NULL ) { _cleanup_free_ char * path = strappend ( tmp_dir , files ) ; <S2SV_StartBug> assert_se ( touch_file ( path , true , USEC_INFINITY , UID_INVALID , GID_INVALID , 0 ) == 0 ) ; <S2SV_EndBug> files = va_arg ( ap , const char * ) ; } va_end ( ap ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , GID_INVALID , MODE_INVALID <S2SV_ModEnd> ) == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11375\n\n```\nCWE-125 <S2SV_StartBug> INST_HANDLER ( lds ) { <S2SV_EndBug> int d = ( ( buf [ 0 ] >> 4 ) & 0xf ) | ( ( buf [ 1 ] & 0x1 ) << 4 ) ; int k = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; op -> ptr = k ; __generic_ld_st ( op , \"ram\" , 0 , 1 , 0 , k , 0 ) ; ESIL_A ( \"r%d,=,\" , d ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lds ) { if ( len < 4 ) { return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 <S2SV_StartBug> static inline void jmp_rel ( struct x86_emulate_ctxt * ctxt , int rel ) <S2SV_EndBug> { <S2SV_StartBug> assign_eip_near ( ctxt , ctxt -> _eip + rel ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static inline int <S2SV_ModEnd> jmp_rel ( struct <S2SV_ModStart> rel ) { return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static int l2tp_ip_sendmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len ) { struct sk_buff * skb ; int rc ; struct l2tp_ip_sock * lsa = l2tp_ip_sk ( sk ) ; <S2SV_StartBug> struct inet_sock * inet = inet_sk ( sk ) ; <S2SV_EndBug> struct ip_options * opt = inet -> opt ; struct rtable * rt = NULL ; int connected = 0 ; __be32 daddr ; if ( sock_flag ( sk , SOCK_DEAD ) ) return - ENOTCONN ; if ( msg -> msg_name ) { struct sockaddr_l2tpip * lip = ( struct sockaddr_l2tpip * ) msg -> msg_name ; if ( msg -> msg_namelen < sizeof ( * lip ) ) return - EINVAL ; if ( lip -> l2tp_family != AF_INET ) { if ( lip -> l2tp_family != AF_UNSPEC ) return - EAFNOSUPPORT ; } daddr = lip -> l2tp_addr . s_addr ; } else { if ( sk -> sk_state != TCP_ESTABLISHED ) return - EDESTADDRREQ ; daddr = inet -> inet_daddr ; connected = 1 ; } rc = - ENOMEM ; skb = sock_wmalloc ( sk , 2 + NET_SKB_PAD + sizeof ( struct iphdr ) + 4 + len , 0 , GFP_KERNEL ) ; if ( ! skb ) goto error ; skb_reserve ( skb , 2 + NET_SKB_PAD ) ; skb_reset_network_header ( skb ) ; skb_reserve ( skb , sizeof ( struct iphdr ) ) ; skb_reset_transport_header ( skb ) ; * ( ( __be32 * ) skb_put ( skb , 4 ) ) = 0 ; rc = memcpy_fromiovec ( skb_put ( skb , len ) , msg -> msg_iov , len ) ; if ( rc < 0 ) { kfree_skb ( skb ) ; goto error ; } if ( connected ) rt = ( struct rtable * ) __sk_dst_check ( sk , 0 ) ; if ( rt == NULL ) { <S2SV_StartBug> if ( opt && opt -> srr ) <S2SV_EndBug> daddr = opt -> faddr ; rt = ip_route_output_ports ( sock_net ( sk ) , sk , daddr , inet -> inet_saddr , inet -> inet_dport , inet -> inet_sport , sk -> sk_protocol , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if ) ; if ( IS_ERR ( rt ) ) goto no_route ; sk_setup_caps ( sk , & rt -> dst ) ; } skb_dst_set ( skb , dst_clone ( & rt -> dst ) ) ; rc = ip_queue_xmit ( skb ) ; error : if ( rc >= 0 ) { lsa -> tx_packets ++ ; lsa -> tx_bytes += len ; rc = len ; } else { lsa -> tx_errors ++ ; } return rc ; no_route : IP_INC_STATS ( sock_net ( sk ) , IPSTATS_MIB_OUTNOROUTES ) ; kfree_skb ( skb ) ; return - EHOSTUNREACH ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) <S2SV_ModEnd> ; struct rtable <S2SV_ModStart> NULL ) { struct ip_options_rcu * inet_opt ; inet_opt = rcu_dereference_protected ( inet -> inet_opt , sock_owned_by_user ( sk ) ) ; if ( inet_opt && inet_opt -> opt . srr ) daddr = inet_opt -> opt . <S2SV_ModEnd> faddr ; rt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15920\n\n```\nCWE-416 int SMB2_read ( const unsigned int xid , struct cifs_io_parms * io_parms , unsigned int * nbytes , char * * buf , int * buf_type ) { struct smb_rqst rqst ; int resp_buftype , rc = - EACCES ; struct smb2_read_plain_req * req = NULL ; struct smb2_read_rsp * rsp = NULL ; struct kvec iov [ 1 ] ; struct kvec rsp_iov ; unsigned int total_len ; int flags = CIFS_LOG_ERROR ; struct cifs_ses * ses = io_parms -> tcon -> ses ; * nbytes = 0 ; rc = smb2_new_read_req ( ( void * * ) & req , & total_len , io_parms , NULL , 0 , 0 ) ; if ( rc ) return rc ; if ( smb3_encryption_required ( io_parms -> tcon ) ) flags |= CIFS_TRANSFORM_REQ ; iov [ 0 ] . iov_base = ( char * ) req ; iov [ 0 ] . iov_len = total_len ; memset ( & rqst , 0 , sizeof ( struct smb_rqst ) ) ; rqst . rq_iov = iov ; rqst . rq_nvec = 1 ; rc = cifs_send_recv ( xid , ses , & rqst , & resp_buftype , flags , & rsp_iov ) ; <S2SV_StartBug> cifs_small_buf_release ( req ) ; <S2SV_EndBug> rsp = ( struct smb2_read_rsp * ) rsp_iov . iov_base ; if ( rc ) { if ( rc != - ENODATA ) { cifs_stats_fail_inc ( io_parms -> tcon , SMB2_READ_HE ) ; cifs_dbg ( VFS , \"Send<S2SV_blank>error<S2SV_blank>in<S2SV_blank>read<S2SV_blank>=<S2SV_blank>%d\\\\n\" , rc ) ; trace_smb3_read_err ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , ses -> Suid , io_parms -> offset , io_parms -> length , rc ) ; } else trace_smb3_read_done ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , ses -> Suid , io_parms -> offset , 0 ) ; free_rsp_buf ( resp_buftype , rsp_iov . iov_base ) ; return rc == - ENODATA ? 0 : rc ; } else trace_smb3_read_done ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , ses -> Suid , io_parms -> offset , io_parms -> length ) ; <S2SV_StartBug> * nbytes = le32_to_cpu ( rsp -> DataLength ) ; <S2SV_EndBug> if ( ( * nbytes > CIFS_MAX_MSGSIZE ) || ( * nbytes > io_parms -> length ) ) { cifs_dbg ( FYI , \"bad<S2SV_blank>length<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>count<S2SV_blank>%d\\\\n\" , * nbytes , io_parms -> length ) ; rc = - EIO ; * nbytes = 0 ; } if ( * buf ) { memcpy ( * buf , ( char * ) rsp + rsp -> DataOffset , * nbytes ) ; free_rsp_buf ( resp_buftype , rsp_iov . iov_base ) ; } else if ( resp_buftype != CIFS_NO_BUFFER ) { * buf = rsp_iov . iov_base ; if ( resp_buftype == CIFS_SMALL_BUFFER ) * buf_type = CIFS_SMALL_BUFFER ; else if ( resp_buftype == CIFS_LARGE_BUFFER ) * buf_type = CIFS_LARGE_BUFFER ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rsp_iov ) ; <S2SV_ModEnd> rsp = ( <S2SV_ModStart> length ) ; cifs_small_buf_release ( req ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12887\n\n```\nCWE-401 static int8_t parse_ext_option ( uint16_t * dst , uint8_t * * packet_data_pptr , uint8_t * packet_data_start_ptr , uint16_t packet_len , uint16_t * message_left ) { uint16_t option_number = * dst ; if ( option_number == 13 ) { uint8_t option_ext ; int8_t read_result = sn_coap_parser_read_packet_u8 ( & option_ext , * packet_data_pptr , packet_data_start_ptr , packet_len ) ; if ( read_result != 0 ) { tr_error ( \"sn_coap_parser_options_parse<S2SV_blank>-<S2SV_blank>**packet_data_pptr<S2SV_blank>overflow<S2SV_blank>!\" ) ; return - 1 ; } else { <S2SV_StartBug> option_number += option_ext ; <S2SV_EndBug> * message_left = sn_coap_parser_move_packet_ptr ( packet_data_pptr , packet_data_start_ptr , packet_len , 1 ) ; } } else if ( option_number == 14 ) { int8_t read_result = sn_coap_parser_read_packet_u16 ( & option_number , * packet_data_pptr , packet_data_start_ptr , packet_len ) ; if ( read_result != 0 ) { tr_error ( \"sn_coap_parser_options_parse<S2SV_blank>-<S2SV_blank>**packet_data_pptr<S2SV_blank>overflow<S2SV_blank>!\" ) ; return - 1 ; } else { <S2SV_StartBug> option_number += 269 ; <S2SV_EndBug> * message_left = sn_coap_parser_move_packet_ptr ( packet_data_pptr , packet_data_start_ptr , packet_len , 2 ) ; } } else if ( option_number == 15 ) { tr_error ( \"sn_coap_parser_options_parse<S2SV_blank>-<S2SV_blank>invalid<S2SV_blank>option<S2SV_blank>number(15)!\" ) ; return - 1 ; } * dst = option_number ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { if ( sn_coap_parser_add_u16_limit ( option_number , option_ext , & option_number ) != 0 ) { return - 1 ; } <S2SV_ModEnd> * message_left = <S2SV_ModStart> } else { if ( sn_coap_parser_add_u16_limit ( option_number , 269 , & option_number ) != 0 ) { return - 1 ; } <S2SV_ModEnd> * message_left =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14015\n\n```\nCWE-119 static const ut8 * r_bin_dwarf_parse_comp_unit ( Sdb * s , const ut8 * obuf , RBinDwarfCompUnit * cu , const RBinDwarfDebugAbbrev * da , size_t offset , const ut8 * debug_str , size_t debug_str_len ) { const ut8 * buf = obuf , * buf_end = obuf + ( cu -> hdr . length - 7 ) ; ut64 abbr_code ; size_t i ; if ( cu -> hdr . length > debug_str_len ) { return NULL ; } while ( buf && buf < buf_end && buf >= obuf ) { if ( cu -> length && cu -> capacity == cu -> length ) { r_bin_dwarf_expand_cu ( cu ) ; } buf = r_uleb128 ( buf , buf_end - buf , & abbr_code ) ; if ( abbr_code > da -> length || ! buf ) { return NULL ; } r_bin_dwarf_init_die ( & cu -> dies [ cu -> length ] ) ; if ( ! abbr_code ) { cu -> dies [ cu -> length ] . abbrev_code = 0 ; cu -> length ++ ; buf ++ ; continue ; } cu -> dies [ cu -> length ] . abbrev_code = abbr_code ; cu -> dies [ cu -> length ] . tag = da -> decls [ abbr_code - 1 ] . tag ; abbr_code += offset ; if ( da -> capacity < abbr_code ) { return NULL ; } for ( i = 0 ; i < da -> decls [ abbr_code - 1 ] . length ; i ++ ) { if ( cu -> dies [ cu -> length ] . length == cu -> dies [ cu -> length ] . capacity ) { r_bin_dwarf_expand_die ( & cu -> dies [ cu -> length ] ) ; } if ( i >= cu -> dies [ cu -> length ] . capacity || i >= da -> decls [ abbr_code - 1 ] . capacity ) { eprintf ( \"Warning:<S2SV_blank>malformed<S2SV_blank>dwarf<S2SV_blank>attribute<S2SV_blank>capacity<S2SV_blank>doesn\\'t<S2SV_blank>match<S2SV_blank>length\\\\n\" ) ; break ; } memset ( & cu -> dies [ cu -> length ] . attr_values [ i ] , 0 , sizeof ( cu -> dies [ cu -> length ] . attr_values [ i ] ) ) ; buf = r_bin_dwarf_parse_attr_value ( buf , buf_end - buf , & da -> decls [ abbr_code - 1 ] . specs [ i ] , & cu -> dies [ cu -> length ] . attr_values [ i ] , & cu -> hdr , debug_str , debug_str_len ) ; if ( cu -> dies [ cu -> length ] . attr_values [ i ] . name == DW_AT_comp_dir ) { const char * name = cu -> dies [ cu -> length ] . attr_values [ i ] . encoding . str_struct . string ; <S2SV_StartBug> sdb_set ( s , \"DW_AT_comp_dir\" , name , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> cu -> dies [ cu -> length ] . length ++ ; } cu -> length ++ ; } return buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . string ; if ( name > 1024 ) { <S2SV_ModStart> ) ; } else { eprintf ( \"Invalid<S2SV_blank>string<S2SV_blank>pointer<S2SV_blank>at<S2SV_blank>%p\\\\n\" , name ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5157\n\n```\nCWE-119 int main ( int argc , char * * argv ) { test_cmp_parameters inParam ; FILE * fbase = NULL , * ftest = NULL ; int same = 0 ; <S2SV_StartBug> char lbase [ 256 ] ; <S2SV_EndBug> <S2SV_StartBug> char strbase [ 256 ] ; <S2SV_EndBug> <S2SV_StartBug> char ltest [ 256 ] ; <S2SV_EndBug> <S2SV_StartBug> char strtest [ 256 ] ; <S2SV_EndBug> if ( parse_cmdline_cmp ( argc , argv , & inParam ) == 1 ) { compare_dump_files_help_display ( ) ; goto cleanup ; } printf ( \"******Parameters*********<S2SV_blank>\\\\n\" ) ; printf ( \"<S2SV_blank>base_filename<S2SV_blank>=<S2SV_blank>%s\\\\n\" \"<S2SV_blank>test_filename<S2SV_blank>=<S2SV_blank>%s\\\\n\" , inParam . base_filename , inParam . test_filename ) ; printf ( \"*************************<S2SV_blank>\\\\n\" ) ; printf ( \"Try<S2SV_blank>to<S2SV_blank>open:<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading<S2SV_blank>...<S2SV_blank>\" , inParam . base_filename ) ; if ( ( fbase = fopen ( inParam . base_filename , \"rb\" ) ) == NULL ) { goto cleanup ; } printf ( \"Ok.\\\\n\" ) ; printf ( \"Try<S2SV_blank>to<S2SV_blank>open:<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading<S2SV_blank>...<S2SV_blank>\" , inParam . test_filename ) ; if ( ( ftest = fopen ( inParam . test_filename , \"rb\" ) ) == NULL ) { goto cleanup ; } printf ( \"Ok.\\\\n\" ) ; while ( fgets ( lbase , sizeof ( lbase ) , fbase ) && fgets ( ltest , sizeof ( ltest ) , ftest ) ) { <S2SV_StartBug> int nbase = sscanf ( lbase , \"%255[^\\\\r\\\\n]\" , strbase ) ; <S2SV_EndBug> <S2SV_StartBug> int ntest = sscanf ( ltest , \"%255[^\\\\r\\\\n]\" , strtest ) ; <S2SV_EndBug> <S2SV_StartBug> assert ( nbase != 255 && ntest != 255 ) ; <S2SV_EndBug> if ( nbase != 1 || ntest != 1 ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>line<S2SV_blank>from<S2SV_blank>files\\\\n\" ) ; goto cleanup ; } if ( strcmp ( strbase , strtest ) != 0 ) { fprintf ( stderr , \"<%s><S2SV_blank>vs.<S2SV_blank><%s>\\\\n\" , strbase , strtest ) ; goto cleanup ; } } same = 1 ; printf ( \"\\\\n*****<S2SV_blank>TEST<S2SV_blank>SUCCEED:<S2SV_blank>Files<S2SV_blank>are<S2SV_blank>the<S2SV_blank>same.<S2SV_blank>*****\\\\n\" ) ; cleanup : if ( fbase ) fclose ( fbase ) ; if ( ftest ) fclose ( ftest ) ; free ( inParam . base_filename ) ; free ( inParam . test_filename ) ; return same ? EXIT_SUCCESS : EXIT_FAILURE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char lbase [ 512 <S2SV_ModEnd> ] ; char <S2SV_ModStart> char strbase [ 512 <S2SV_ModEnd> ] ; char <S2SV_ModStart> char ltest [ 512 <S2SV_ModEnd> ] ; char <S2SV_ModStart> char strtest [ 512 <S2SV_ModEnd> ] ; if <S2SV_ModStart> ( lbase , \"%511[^\\\\r\\\\n]\" <S2SV_ModEnd> , strbase ) <S2SV_ModStart> ( ltest , \"%511[^\\\\r\\\\n]\" <S2SV_ModEnd> , strtest ) <S2SV_ModStart> ( nbase != 511 <S2SV_ModEnd> && ntest != <S2SV_ModStart> && ntest != 511 <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3228\n\n```\nCWE-200 static int irda_recvmsg_dgram ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct irda_sock * self = irda_sk ( sk ) ; struct sk_buff * skb ; size_t copied ; int err ; IRDA_DEBUG ( 4 , \"%s()\\\\n\" , __func__ ) ; <S2SV_StartBug> skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , <S2SV_EndBug> flags & MSG_DONTWAIT , & err ) ; if ( ! skb ) return err ; skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Received<S2SV_blank>truncated<S2SV_blank>frame<S2SV_blank>(%zd<S2SV_blank><<S2SV_blank>%zd)!\\\\n\" , __func__ , copied , size ) ; copied = size ; msg -> msg_flags |= MSG_TRUNC ; } skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; skb_free_datagram ( sk , skb ) ; if ( self -> rx_flow == FLOW_STOP ) { if ( ( atomic_read ( & sk -> sk_rmem_alloc ) << 2 ) <= sk -> sk_rcvbuf ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Starting<S2SV_blank>IrTTP\\\\n\" , __func__ ) ; self -> rx_flow = FLOW_START ; irttp_flow_request ( self -> tsap , FLOW_START ) ; } } return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> __func__ ) ; msg -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3534\n\n```\nCWE-264 static int __poke_user ( struct task_struct * child , addr_t addr , addr_t data ) { struct user * dummy = NULL ; addr_t offset ; if ( addr < ( addr_t ) & dummy -> regs . acrs ) { if ( addr == ( addr_t ) & dummy -> regs . psw . mask ) { unsigned long mask = PSW_MASK_USER ; mask |= is_ri_task ( child ) ? PSW_MASK_RI : 0 ; <S2SV_StartBug> if ( ( data & ~ mask ) != PSW_USER_BITS ) <S2SV_EndBug> return - EINVAL ; if ( ( data & PSW_MASK_EA ) && ! ( data & PSW_MASK_BA ) ) return - EINVAL ; } * ( addr_t * ) ( ( addr_t ) & task_pt_regs ( child ) -> psw + addr ) = data ; } else if ( addr < ( addr_t ) ( & dummy -> regs . orig_gpr2 ) ) { offset = addr - ( addr_t ) & dummy -> regs . acrs ; # ifdef CONFIG_64BIT if ( addr == ( addr_t ) & dummy -> regs . acrs [ 15 ] ) child -> thread . acrs [ 15 ] = ( unsigned int ) ( data >> 32 ) ; else # endif * ( addr_t * ) ( ( addr_t ) & child -> thread . acrs + offset ) = data ; } else if ( addr == ( addr_t ) & dummy -> regs . orig_gpr2 ) { task_pt_regs ( child ) -> orig_gpr2 = data ; } else if ( addr < ( addr_t ) & dummy -> regs . fp_regs ) { return 0 ; } else if ( addr < ( addr_t ) ( & dummy -> regs . fp_regs + 1 ) ) { if ( addr == ( addr_t ) & dummy -> regs . fp_regs . fpc ) if ( ( unsigned int ) data != 0 || test_fp_ctl ( data >> ( BITS_PER_LONG - 32 ) ) ) return - EINVAL ; offset = addr - ( addr_t ) & dummy -> regs . fp_regs ; * ( addr_t * ) ( ( addr_t ) & child -> thread . fp_regs + offset ) = data ; } else if ( addr < ( addr_t ) ( & dummy -> regs . per_info + 1 ) ) { addr -= ( addr_t ) & dummy -> regs . per_info ; __poke_user_per ( child , addr , data ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ( data ^ PSW_USER_BITS ) <S2SV_ModStart> ~ mask ) return - EINVAL ; if ( ( data & PSW_MASK_ASC ) == PSW_ASC_HOME <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0216\n\n```\nCWE-20 void xenvif_disconnect ( struct xenvif * vif ) { <S2SV_StartBug> struct net_device * dev = vif -> dev ; <S2SV_EndBug> <S2SV_StartBug> if ( netif_carrier_ok ( dev ) ) { <S2SV_EndBug> rtnl_lock ( ) ; netif_carrier_off ( dev ) ; if ( netif_running ( dev ) ) <S2SV_StartBug> xenvif_down ( vif ) ; <S2SV_EndBug> <S2SV_StartBug> rtnl_unlock ( ) ; <S2SV_EndBug> xenvif_put ( vif ) ; } atomic_dec ( & vif -> refcnt ) ; wait_event ( vif -> waiting_to_free , atomic_read ( & vif -> refcnt ) == 0 ) ; del_timer_sync ( & vif -> credit_timeout ) ; if ( vif -> irq ) unbind_from_irqhandler ( vif -> irq , vif ) ; unregister_netdev ( vif -> dev ) ; xen_netbk_unmap_frontend_rings ( vif ) ; free_netdev ( vif -> dev ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vif ) { <S2SV_ModEnd> if ( netif_carrier_ok <S2SV_ModStart> ( netif_carrier_ok ( vif -> <S2SV_ModEnd> dev ) ) <S2SV_ModStart> dev ) ) xenvif_carrier_off <S2SV_ModEnd> ( vif ) <S2SV_ModStart> vif ) ; <S2SV_ModEnd> atomic_dec ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 static int xen_evtchn_cpu_prepare ( unsigned int cpu ) { <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> if ( evtchn_ops -> percpu_init ) ret = evtchn_ops -> percpu_init ( cpu ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret = 0 ; xen_cpu_init_eoi ( cpu )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static const char * expr_context_name ( expr_context_ty ctx ) { switch ( ctx ) { case Load : return \"Load\" ; case Store : return \"Store\" ; case Del : return \"Del\" ; case AugLoad : return \"AugLoad\" ; case AugStore : return \"AugStore\" ; case Param : return \"Param\" ; default : <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> return \"(unknown)\" ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; default : abort ( ) <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12464\n\n```\nCWE-416 void usb_sg_cancel ( struct usb_sg_request * io ) { unsigned long flags ; int i , retval ; spin_lock_irqsave ( & io -> lock , flags ) ; <S2SV_StartBug> if ( io -> status ) { <S2SV_EndBug> spin_unlock_irqrestore ( & io -> lock , flags ) ; return ; } io -> status = - ECONNRESET ; <S2SV_StartBug> spin_unlock_irqrestore ( & io -> lock , flags ) ; <S2SV_EndBug> for ( i = io -> entries - 1 ; i >= 0 ; -- i ) { usb_block_urb ( io -> urbs [ i ] ) ; retval = usb_unlink_urb ( io -> urbs [ i ] ) ; if ( retval != - EINPROGRESS && retval != - ENODEV && retval != - EBUSY && retval != - EIDRM ) dev_warn ( & io -> dev -> dev , \"%s,<S2SV_blank>unlink<S2SV_blank>--><S2SV_blank>%d\\\\n\" , __func__ , retval ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> io -> status || io -> count == 0 <S2SV_ModStart> - ECONNRESET ; io -> count ++ ; <S2SV_ModStart> ) ; } spin_lock_irqsave ( & io -> lock , flags ) ; io -> count -- ; if ( ! io -> count ) complete ( & io -> complete ) ; spin_unlock_irqrestore ( & io -> lock , flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6031\n\n```\nCWE-119 void IGDstartelt ( void * d , const char * name , int l ) { <S2SV_StartBug> struct IGDdatas * datas = ( struct IGDdatas * ) d ; <S2SV_EndBug> memcpy ( datas -> cureltname , name , l ) ; datas -> cureltname [ l ] = '\\\\0' ; datas -> level ++ ; if ( ( l == 7 ) && ! memcmp ( name , \"service\" , l ) ) { datas -> tmp . controlurl [ 0 ] = '\\\\0' ; datas -> tmp . eventsuburl [ 0 ] = '\\\\0' ; datas -> tmp . scpdurl [ 0 ] = '\\\\0' ; datas -> tmp . servicetype [ 0 ] = '\\\\0' ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ) d ; if ( l >= MINIUPNPC_URL_MAXSIZE ) l = MINIUPNPC_URL_MAXSIZE - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horAcc16 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint16 * wp = ( uint16 * ) cp0 ; tmsize_t wc = cc / 2 ; <S2SV_StartBug> assert ( ( cc % ( 2 * stride ) ) == 0 ) ; <S2SV_EndBug> if ( wc > stride ) { wc -= stride ; do { REPEAT4 ( stride , wp [ stride ] = ( uint16 ) ( ( ( unsigned int ) wp [ stride ] + ( unsigned int ) wp [ 0 ] ) & 0xffff ) ; wp ++ ) wc -= stride ; } while ( wc > 0 ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horAcc16 ( TIFF <S2SV_ModStart> / 2 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horAcc16\" , \"%s\" , \"cc%(2*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( wc <S2SV_ModStart> ) ; } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2889\n\n```\nCWE-189 void bpf_jit_compile ( struct sk_filter * fp ) { u8 temp [ 64 ] ; u8 * prog ; unsigned int proglen , oldproglen = 0 ; int ilen , i ; int t_offset , f_offset ; u8 t_op , f_op , seen = 0 , pass ; u8 * image = NULL ; u8 * func ; int pc_ret0 = - 1 ; unsigned int cleanup_addr ; unsigned int * addrs ; const struct sock_filter * filter = fp -> insns ; int flen = fp -> len ; if ( ! bpf_jit_enable ) return ; addrs = kmalloc ( flen * sizeof ( * addrs ) , GFP_KERNEL ) ; if ( addrs == NULL ) return ; for ( proglen = 0 , i = 0 ; i < flen ; i ++ ) { proglen += 64 ; addrs [ i ] = proglen ; } cleanup_addr = proglen ; for ( pass = 0 ; pass < 10 ; pass ++ ) { proglen = 0 ; prog = temp ; if ( seen ) { EMIT4 ( 0x55 , 0x48 , 0x89 , 0xe5 ) ; EMIT4 ( 0x48 , 0x83 , 0xec , 96 ) ; if ( seen & ( SEEN_XREG | SEEN_DATAREF ) ) EMIT4 ( 0x48 , 0x89 , 0x5d , 0xf8 ) ; if ( seen & SEEN_XREG ) CLEAR_X ( ) ; if ( seen & SEEN_DATAREF ) { if ( offsetof ( struct sk_buff , len ) <= 127 ) EMIT4 ( 0x44 , 0x8b , 0x4f , offsetof ( struct sk_buff , len ) ) ; else { EMIT3 ( 0x44 , 0x8b , 0x8f ) ; EMIT ( offsetof ( struct sk_buff , len ) , 4 ) ; } if ( is_imm8 ( offsetof ( struct sk_buff , data_len ) ) ) EMIT4 ( 0x44 , 0x2b , 0x4f , offsetof ( struct sk_buff , data_len ) ) ; else { EMIT3 ( 0x44 , 0x2b , 0x8f ) ; EMIT ( offsetof ( struct sk_buff , data_len ) , 4 ) ; } if ( is_imm8 ( offsetof ( struct sk_buff , data ) ) ) EMIT4 ( 0x4c , 0x8b , 0x47 , offsetof ( struct sk_buff , data ) ) ; else { EMIT3 ( 0x4c , 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , data ) , 4 ) ; } } } switch ( filter [ 0 ] . code ) { case BPF_S_RET_K : case BPF_S_LD_W_LEN : case BPF_S_ANC_PROTOCOL : case BPF_S_ANC_IFINDEX : case BPF_S_ANC_MARK : case BPF_S_ANC_RXHASH : case BPF_S_ANC_CPU : case BPF_S_ANC_QUEUE : case BPF_S_LD_W_ABS : case BPF_S_LD_H_ABS : case BPF_S_LD_B_ABS : break ; default : CLEAR_A ( ) ; } for ( i = 0 ; i < flen ; i ++ ) { unsigned int K = filter [ i ] . k ; switch ( filter [ i ] . code ) { case BPF_S_ALU_ADD_X : seen |= SEEN_XREG ; EMIT2 ( 0x01 , 0xd8 ) ; break ; case BPF_S_ALU_ADD_K : if ( ! K ) break ; if ( is_imm8 ( K ) ) EMIT3 ( 0x83 , 0xc0 , K ) ; else EMIT1_off32 ( 0x05 , K ) ; break ; case BPF_S_ALU_SUB_X : seen |= SEEN_XREG ; EMIT2 ( 0x29 , 0xd8 ) ; break ; case BPF_S_ALU_SUB_K : if ( ! K ) break ; if ( is_imm8 ( K ) ) EMIT3 ( 0x83 , 0xe8 , K ) ; else EMIT1_off32 ( 0x2d , K ) ; break ; case BPF_S_ALU_MUL_X : seen |= SEEN_XREG ; EMIT3 ( 0x0f , 0xaf , 0xc3 ) ; break ; case BPF_S_ALU_MUL_K : if ( is_imm8 ( K ) ) EMIT3 ( 0x6b , 0xc0 , K ) ; else { EMIT2 ( 0x69 , 0xc0 ) ; EMIT ( K , 4 ) ; } break ; case BPF_S_ALU_DIV_X : seen |= SEEN_XREG ; EMIT2 ( 0x85 , 0xdb ) ; if ( pc_ret0 != - 1 ) EMIT_COND_JMP ( X86_JE , addrs [ pc_ret0 ] - ( addrs [ i ] - 4 ) ) ; else { EMIT_COND_JMP ( X86_JNE , 2 + 5 ) ; CLEAR_A ( ) ; EMIT1_off32 ( 0xe9 , cleanup_addr - ( addrs [ i ] - 4 ) ) ; } EMIT4 ( 0x31 , 0xd2 , 0xf7 , 0xf3 ) ; break ; case BPF_S_ALU_DIV_K : EMIT3 ( 0x48 , 0x69 , 0xc0 ) ; EMIT ( K , 4 ) ; EMIT4 ( 0x48 , 0xc1 , 0xe8 , 0x20 ) ; break ; case BPF_S_ALU_AND_X : seen |= SEEN_XREG ; EMIT2 ( 0x21 , 0xd8 ) ; break ; case BPF_S_ALU_AND_K : if ( K >= 0xFFFFFF00 ) { EMIT2 ( 0x24 , K & 0xFF ) ; } else if ( K >= 0xFFFF0000 ) { EMIT2 ( 0x66 , 0x25 ) ; EMIT2 ( K , 2 ) ; } else { EMIT1_off32 ( 0x25 , K ) ; } break ; case BPF_S_ALU_OR_X : seen |= SEEN_XREG ; EMIT2 ( 0x09 , 0xd8 ) ; break ; case BPF_S_ALU_OR_K : if ( is_imm8 ( K ) ) EMIT3 ( 0x83 , 0xc8 , K ) ; else EMIT1_off32 ( 0x0d , K ) ; break ; case BPF_S_ALU_LSH_X : seen |= SEEN_XREG ; EMIT4 ( 0x89 , 0xd9 , 0xd3 , 0xe0 ) ; break ; case BPF_S_ALU_LSH_K : if ( K == 0 ) break ; else if ( K == 1 ) EMIT2 ( 0xd1 , 0xe0 ) ; else EMIT3 ( 0xc1 , 0xe0 , K ) ; break ; case BPF_S_ALU_RSH_X : seen |= SEEN_XREG ; EMIT4 ( 0x89 , 0xd9 , 0xd3 , 0xe8 ) ; break ; case BPF_S_ALU_RSH_K : if ( K == 0 ) break ; else if ( K == 1 ) EMIT2 ( 0xd1 , 0xe8 ) ; else EMIT3 ( 0xc1 , 0xe8 , K ) ; break ; case BPF_S_ALU_NEG : EMIT2 ( 0xf7 , 0xd8 ) ; break ; case BPF_S_RET_K : if ( ! K ) { if ( pc_ret0 == - 1 ) pc_ret0 = i ; CLEAR_A ( ) ; } else { EMIT1_off32 ( 0xb8 , K ) ; } case BPF_S_RET_A : if ( seen ) { if ( i != flen - 1 ) { EMIT_JMP ( cleanup_addr - addrs [ i ] ) ; break ; } if ( seen & SEEN_XREG ) EMIT4 ( 0x48 , 0x8b , 0x5d , 0xf8 ) ; EMIT1 ( 0xc9 ) ; } EMIT1 ( 0xc3 ) ; break ; case BPF_S_MISC_TAX : seen |= SEEN_XREG ; EMIT2 ( 0x89 , 0xc3 ) ; break ; case BPF_S_MISC_TXA : seen |= SEEN_XREG ; EMIT2 ( 0x89 , 0xd8 ) ; break ; case BPF_S_LD_IMM : if ( ! K ) CLEAR_A ( ) ; else EMIT1_off32 ( 0xb8 , K ) ; break ; case BPF_S_LDX_IMM : seen |= SEEN_XREG ; if ( ! K ) CLEAR_X ( ) ; else EMIT1_off32 ( 0xbb , K ) ; break ; case BPF_S_LD_MEM : seen |= SEEN_MEM ; EMIT3 ( 0x8b , 0x45 , 0xf0 - K * 4 ) ; break ; case BPF_S_LDX_MEM : seen |= SEEN_XREG | SEEN_MEM ; EMIT3 ( 0x8b , 0x5d , 0xf0 - K * 4 ) ; break ; case BPF_S_ST : seen |= SEEN_MEM ; EMIT3 ( 0x89 , 0x45 , 0xf0 - K * 4 ) ; break ; case BPF_S_STX : seen |= SEEN_XREG | SEEN_MEM ; EMIT3 ( 0x89 , 0x5d , 0xf0 - K * 4 ) ; break ; case BPF_S_LD_W_LEN : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , len ) != 4 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , len ) ) ) EMIT3 ( 0x8b , 0x47 , offsetof ( struct sk_buff , len ) ) ; else { EMIT2 ( 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , len ) , 4 ) ; } break ; case BPF_S_LDX_W_LEN : seen |= SEEN_XREG ; if ( is_imm8 ( offsetof ( struct sk_buff , len ) ) ) EMIT3 ( 0x8b , 0x5f , offsetof ( struct sk_buff , len ) ) ; else { EMIT2 ( 0x8b , 0x9f ) ; EMIT ( offsetof ( struct sk_buff , len ) , 4 ) ; } break ; case BPF_S_ANC_PROTOCOL : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , protocol ) != 2 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , protocol ) ) ) { EMIT4 ( 0x0f , 0xb7 , 0x47 , offsetof ( struct sk_buff , protocol ) ) ; } else { EMIT3 ( 0x0f , 0xb7 , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , protocol ) , 4 ) ; } EMIT2 ( 0x86 , 0xc4 ) ; break ; case BPF_S_ANC_IFINDEX : if ( is_imm8 ( offsetof ( struct sk_buff , dev ) ) ) { EMIT4 ( 0x48 , 0x8b , 0x47 , offsetof ( struct sk_buff , dev ) ) ; } else { EMIT3 ( 0x48 , 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , dev ) , 4 ) ; } EMIT3 ( 0x48 , 0x85 , 0xc0 ) ; EMIT_COND_JMP ( X86_JE , cleanup_addr - ( addrs [ i ] - 6 ) ) ; BUILD_BUG_ON ( FIELD_SIZEOF ( struct net_device , ifindex ) != 4 ) ; EMIT2 ( 0x8b , 0x80 ) ; EMIT ( offsetof ( struct net_device , ifindex ) , 4 ) ; break ; case BPF_S_ANC_MARK : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , mark ) != 4 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , mark ) ) ) { EMIT3 ( 0x8b , 0x47 , offsetof ( struct sk_buff , mark ) ) ; } else { EMIT2 ( 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , mark ) , 4 ) ; } break ; case BPF_S_ANC_RXHASH : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , rxhash ) != 4 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , rxhash ) ) ) { EMIT3 ( 0x8b , 0x47 , offsetof ( struct sk_buff , rxhash ) ) ; } else { EMIT2 ( 0x8b , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , rxhash ) , 4 ) ; } break ; case BPF_S_ANC_QUEUE : BUILD_BUG_ON ( FIELD_SIZEOF ( struct sk_buff , queue_mapping ) != 2 ) ; if ( is_imm8 ( offsetof ( struct sk_buff , queue_mapping ) ) ) { EMIT4 ( 0x0f , 0xb7 , 0x47 , offsetof ( struct sk_buff , queue_mapping ) ) ; } else { EMIT3 ( 0x0f , 0xb7 , 0x87 ) ; EMIT ( offsetof ( struct sk_buff , queue_mapping ) , 4 ) ; } break ; case BPF_S_ANC_CPU : # ifdef CONFIG_SMP EMIT4 ( 0x65 , 0x8b , 0x04 , 0x25 ) ; EMIT ( ( u32 ) ( unsigned long ) & cpu_number , 4 ) ; # else CLEAR_A ( ) ; # endif break ; case BPF_S_LD_W_ABS : func = sk_load_word ; common_load : seen |= SEEN_DATAREF ; if ( ( int ) K < 0 ) goto out ; t_offset = func - ( image + addrs [ i ] ) ; EMIT1_off32 ( 0xbe , K ) ; EMIT1_off32 ( 0xe8 , t_offset ) ; break ; case BPF_S_LD_H_ABS : func = sk_load_half ; goto common_load ; case BPF_S_LD_B_ABS : func = sk_load_byte ; goto common_load ; case BPF_S_LDX_B_MSH : if ( ( int ) K < 0 ) { if ( pc_ret0 != - 1 ) { EMIT_JMP ( addrs [ pc_ret0 ] - addrs [ i ] ) ; break ; } CLEAR_A ( ) ; EMIT_JMP ( cleanup_addr - addrs [ i ] ) ; break ; } seen |= SEEN_DATAREF | SEEN_XREG ; t_offset = sk_load_byte_msh - ( image + addrs [ i ] ) ; EMIT1_off32 ( 0xbe , K ) ; EMIT1_off32 ( 0xe8 , t_offset ) ; break ; case BPF_S_LD_W_IND : func = sk_load_word_ind ; common_load_ind : seen |= SEEN_DATAREF | SEEN_XREG ; t_offset = func - ( image + addrs [ i ] ) ; EMIT1_off32 ( 0xbe , K ) ; EMIT1_off32 ( 0xe8 , t_offset ) ; break ; case BPF_S_LD_H_IND : func = sk_load_half_ind ; goto common_load_ind ; case BPF_S_LD_B_IND : func = sk_load_byte_ind ; goto common_load_ind ; case BPF_S_JMP_JA : t_offset = addrs [ i + K ] - addrs [ i ] ; EMIT_JMP ( t_offset ) ; break ; COND_SEL ( BPF_S_JMP_JGT_K , X86_JA , X86_JBE ) ; COND_SEL ( BPF_S_JMP_JGE_K , X86_JAE , X86_JB ) ; COND_SEL ( BPF_S_JMP_JEQ_K , X86_JE , X86_JNE ) ; COND_SEL ( BPF_S_JMP_JSET_K , X86_JNE , X86_JE ) ; COND_SEL ( BPF_S_JMP_JGT_X , X86_JA , X86_JBE ) ; COND_SEL ( BPF_S_JMP_JGE_X , X86_JAE , X86_JB ) ; COND_SEL ( BPF_S_JMP_JEQ_X , X86_JE , X86_JNE ) ; COND_SEL ( BPF_S_JMP_JSET_X , X86_JNE , X86_JE ) ; cond_branch : f_offset = addrs [ i + filter [ i ] . jf ] - addrs [ i ] ; t_offset = addrs [ i + filter [ i ] . jt ] - addrs [ i ] ; if ( filter [ i ] . jt == filter [ i ] . jf ) { EMIT_JMP ( t_offset ) ; break ; } switch ( filter [ i ] . code ) { case BPF_S_JMP_JGT_X : case BPF_S_JMP_JGE_X : case BPF_S_JMP_JEQ_X : seen |= SEEN_XREG ; EMIT2 ( 0x39 , 0xd8 ) ; break ; case BPF_S_JMP_JSET_X : seen |= SEEN_XREG ; EMIT2 ( 0x85 , 0xd8 ) ; break ; case BPF_S_JMP_JEQ_K : if ( K == 0 ) { EMIT2 ( 0x85 , 0xc0 ) ; break ; } case BPF_S_JMP_JGT_K : case BPF_S_JMP_JGE_K : if ( K <= 127 ) EMIT3 ( 0x83 , 0xf8 , K ) ; else EMIT1_off32 ( 0x3d , K ) ; break ; case BPF_S_JMP_JSET_K : if ( K <= 0xFF ) EMIT2 ( 0xa8 , K ) ; else if ( ! ( K & 0xFFFF00FF ) ) EMIT3 ( 0xf6 , 0xc4 , K >> 8 ) ; else if ( K <= 0xFFFF ) { EMIT2 ( 0x66 , 0xa9 ) ; EMIT ( K , 2 ) ; } else { EMIT1_off32 ( 0xa9 , K ) ; } break ; } if ( filter [ i ] . jt != 0 ) { <S2SV_StartBug> if ( filter [ i ] . jf ) <S2SV_EndBug> <S2SV_StartBug> t_offset += is_near ( f_offset ) ? 2 : 6 ; <S2SV_EndBug> EMIT_COND_JMP ( t_op , t_offset ) ; if ( filter [ i ] . jf ) EMIT_JMP ( f_offset ) ; break ; } EMIT_COND_JMP ( f_op , f_offset ) ; break ; default : goto out ; } ilen = prog - temp ; if ( image ) { if ( unlikely ( proglen + ilen > oldproglen ) ) { pr_err ( \"bpb_jit_compile<S2SV_blank>fatal<S2SV_blank>error\\\\n\" ) ; kfree ( addrs ) ; module_free ( NULL , image ) ; return ; } memcpy ( image + proglen , temp , ilen ) ; } proglen += ilen ; addrs [ i ] = proglen ; prog = temp ; } cleanup_addr = proglen - 1 ; if ( seen ) cleanup_addr -= 1 ; if ( seen & SEEN_XREG ) cleanup_addr -= 4 ; if ( image ) { WARN_ON ( proglen != oldproglen ) ; break ; } if ( proglen == oldproglen ) { image = module_alloc ( max_t ( unsigned int , proglen , sizeof ( struct work_struct ) ) ) ; if ( ! image ) goto out ; } oldproglen = proglen ; } if ( bpf_jit_enable > 1 ) pr_err ( \"flen=%d<S2SV_blank>proglen=%u<S2SV_blank>pass=%d<S2SV_blank>image=%p\\\\n\" , flen , proglen , pass , image ) ; if ( image ) { if ( bpf_jit_enable > 1 ) print_hex_dump ( KERN_ERR , \"JIT<S2SV_blank>code:<S2SV_blank>\" , DUMP_PREFIX_ADDRESS , 16 , 1 , image , proglen , false ) ; bpf_flush_icache ( image , image + proglen ) ; fp -> bpf_func = ( void * ) image ; } out : kfree ( addrs ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] . jf && f_offset <S2SV_ModStart> ? 2 : 5 <S2SV_ModEnd> ; EMIT_COND_JMP (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9728\n\n```\nCWE-119 static int udf_symlink_filler ( struct file * file , struct page * page ) { struct inode * inode = page -> mapping -> host ; struct buffer_head * bh = NULL ; unsigned char * symlink ; <S2SV_StartBug> int err = - EIO ; <S2SV_EndBug> unsigned char * p = kmap ( page ) ; struct udf_inode_info * iinfo ; <S2SV_StartBug> uint32_t pos ; <S2SV_EndBug> iinfo = UDF_I ( inode ) ; pos = udf_block_map ( inode , 0 ) ; down_read ( & iinfo -> i_data_sem ) ; if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_IN_ICB ) { symlink = iinfo -> i_ext . i_data + iinfo -> i_lenEAttr ; } else { bh = sb_bread ( inode -> i_sb , pos ) ; <S2SV_StartBug> if ( ! bh ) <S2SV_EndBug> goto out ; symlink = bh -> b_data ; } udf_pc_to_char ( inode -> i_sb , symlink , inode -> i_size , p ) ; brelse ( bh ) ; up_read ( & iinfo -> i_data_sem ) ; SetPageUptodate ( page ) ; kunmap ( page ) ; unlock_page ( page ) ; return 0 ; <S2SV_StartBug> out : <S2SV_EndBug> up_read ( & iinfo -> i_data_sem ) ; SetPageError ( page ) ; <S2SV_StartBug> kunmap ( page ) ; <S2SV_EndBug> unlock_page ( page ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int err <S2SV_ModEnd> ; unsigned char <S2SV_ModStart> uint32_t pos ; if ( inode -> i_size > inode -> i_sb -> s_blocksize ) { err = - ENAMETOOLONG ; goto out_unmap ; } <S2SV_ModStart> ! bh ) { err = - EIO ; goto out_unlock_inode ; } <S2SV_ModEnd> symlink = bh <S2SV_ModStart> return 0 ; out_unlock_inode <S2SV_ModEnd> : up_read ( <S2SV_ModStart> page ) ; out_unmap :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11811\n\n```\nCWE-416 int ipmi_si_port_setup ( struct si_sm_io * io ) { unsigned int addr = io -> addr_data ; int idx ; if ( ! addr ) return - ENODEV ; <S2SV_StartBug> io -> io_cleanup = port_cleanup ; <S2SV_EndBug> switch ( io -> regsize ) { case 1 : io -> inputb = port_inb ; io -> outputb = port_outb ; break ; case 2 : io -> inputb = port_inw ; io -> outputb = port_outw ; break ; case 4 : io -> inputb = port_inl ; io -> outputb = port_outl ; break ; default : dev_warn ( io -> dev , \"Invalid<S2SV_blank>register<S2SV_blank>size:<S2SV_blank>%d\\\\n\" , io -> regsize ) ; return - EINVAL ; } for ( idx = 0 ; idx < io -> io_size ; idx ++ ) { if ( request_region ( addr + idx * io -> regspacing , io -> regsize , DEVICE_NAME ) == NULL ) { while ( idx -- ) release_region ( addr + idx * io -> regspacing , io -> regsize ) ; return - EIO ; } } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENODEV ; <S2SV_ModEnd> switch ( io <S2SV_ModStart> ; } } io -> io_cleanup = port_cleanup ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 ssize_t cdf_read_short_sector ( const cdf_stream_t * sst , void * buf , size_t offs , size_t len , const cdf_header_t * h , cdf_secid_t id ) { <S2SV_StartBug> assert ( ( size_t ) CDF_SHORT_SEC_SIZE ( h ) == len ) ; <S2SV_EndBug> ( void ) memcpy ( ( ( char * ) buf ) + offs , <S2SV_StartBug> ( ( const char * ) sst -> sst_tab ) + CDF_SHORT_SEC_POS ( h , id ) , len ) ; <S2SV_EndBug> return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ) { size_t ss = <S2SV_ModEnd> CDF_SHORT_SEC_SIZE ( h <S2SV_ModStart> ( h ) ; size_t pos = CDF_SHORT_SEC_POS ( h , id ) ; assert ( ss <S2SV_ModStart> len ) ; if ( sst -> sst_len < ( size_t ) id ) { DPRINTF ( ( \"bad<S2SV_blank>sector<S2SV_blank>id<S2SV_blank>%d<S2SV_blank>><S2SV_blank>%d\\\\n\" , id , sst -> sst_len ) ) ; return - 1 ; } <S2SV_ModStart> sst_tab ) + pos <S2SV_ModEnd> , len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static void ext4_end_io_dio ( struct kiocb * iocb , loff_t offset , ssize_t size , void * private ) { ext4_io_end_t * io_end = iocb -> private ; struct workqueue_struct * wq ; <S2SV_StartBug> if ( ! io_end || ! size ) <S2SV_EndBug> return ; ext_debug ( \"ext4_end_io_dio():<S2SV_blank>io_end<S2SV_blank>0x%p\" \"for<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>iocb<S2SV_blank>0x%p,<S2SV_blank>offset<S2SV_blank>%llu,<S2SV_blank>size<S2SV_blank>%llu\\\\n\" , iocb -> private , io_end -> inode -> i_ino , iocb , offset , size ) ; if ( io_end -> flag != EXT4_IO_UNWRITTEN ) { ext4_free_io_end ( io_end ) ; iocb -> private = NULL ; return ; } io_end -> offset = offset ; io_end -> size = size ; <S2SV_StartBug> wq = EXT4_SB ( io_end -> inode -> i_sb ) -> dio_unwritten_wq ; <S2SV_EndBug> queue_work ( wq , & io_end -> work ) ; <S2SV_StartBug> list_add_tail ( & io_end -> list , <S2SV_EndBug> <S2SV_StartBug> & EXT4_I ( io_end -> inode ) -> i_completed_io_list ) ; <S2SV_EndBug> iocb -> private = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * wq ; unsigned long flags ; struct ext4_inode_info * ei ; <S2SV_ModStart> = size ; io_end -> flag = EXT4_IO_UNWRITTEN ; <S2SV_ModStart> work ) ; ei = EXT4_I ( io_end -> inode ) ; spin_lock_irqsave ( & ei -> i_completed_io_lock , flags ) ; <S2SV_ModStart> -> list , & ei -> i_completed_io_list ) ; spin_unlock_irqrestore ( & ei -> i_completed_io_lock , flags <S2SV_ModEnd> ) ; iocb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18075\n\n```\nCWE-763 static int pcrypt_create_aead ( struct crypto_template * tmpl , struct rtattr * * tb , u32 type , u32 mask ) { struct pcrypt_instance_ctx * ctx ; struct crypto_attr_type * algt ; struct aead_instance * inst ; struct aead_alg * alg ; const char * name ; int err ; algt = crypto_get_attr_type ( tb ) ; if ( IS_ERR ( algt ) ) return PTR_ERR ( algt ) ; name = crypto_attr_alg_name ( tb [ 1 ] ) ; if ( IS_ERR ( name ) ) return PTR_ERR ( name ) ; inst = kzalloc ( sizeof ( * inst ) + sizeof ( * ctx ) , GFP_KERNEL ) ; if ( ! inst ) return - ENOMEM ; ctx = aead_instance_ctx ( inst ) ; crypto_set_aead_spawn ( & ctx -> spawn , aead_crypto_instance ( inst ) ) ; err = crypto_grab_aead ( & ctx -> spawn , name , 0 , 0 ) ; if ( err ) goto out_free_inst ; alg = crypto_spawn_aead_alg ( & ctx -> spawn ) ; err = pcrypt_init_instance ( aead_crypto_instance ( inst ) , & alg -> base ) ; if ( err ) goto out_drop_aead ; inst -> alg . base . cra_flags = CRYPTO_ALG_ASYNC ; inst -> alg . ivsize = crypto_aead_alg_ivsize ( alg ) ; inst -> alg . maxauthsize = crypto_aead_alg_maxauthsize ( alg ) ; inst -> alg . base . cra_ctxsize = sizeof ( struct pcrypt_aead_ctx ) ; inst -> alg . init = pcrypt_aead_init_tfm ; inst -> alg . exit = pcrypt_aead_exit_tfm ; inst -> alg . setkey = pcrypt_aead_setkey ; inst -> alg . setauthsize = pcrypt_aead_setauthsize ; inst -> alg . encrypt = pcrypt_aead_encrypt ; inst -> alg . decrypt = pcrypt_aead_decrypt ; <S2SV_StartBug> err = aead_register_instance ( tmpl , inst ) ; <S2SV_EndBug> if ( err ) goto out_drop_aead ; out : return err ; out_drop_aead : crypto_drop_aead ( & ctx -> spawn ) ; out_free_inst : kfree ( inst ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = pcrypt_aead_decrypt ; inst -> free = pcrypt_free ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8962\n\n```\nCWE-415 static int sg_common_write ( Sg_fd * sfp , Sg_request * srp , unsigned char * cmnd , int timeout , int blocking ) { int k , at_head ; Sg_device * sdp = sfp -> parentdp ; sg_io_hdr_t * hp = & srp -> header ; srp -> data . cmd_opcode = cmnd [ 0 ] ; hp -> status = 0 ; hp -> masked_status = 0 ; hp -> msg_status = 0 ; hp -> info = 0 ; hp -> host_status = 0 ; hp -> driver_status = 0 ; hp -> resid = 0 ; SCSI_LOG_TIMEOUT ( 4 , sg_printk ( KERN_INFO , sfp -> parentdp , \"sg_common_write:<S2SV_blank><S2SV_blank>scsi<S2SV_blank>opcode=0x%02x,<S2SV_blank>cmd_size=%d\\\\n\" , ( int ) cmnd [ 0 ] , ( int ) hp -> cmd_len ) ) ; k = sg_start_req ( srp , cmnd ) ; if ( k ) { SCSI_LOG_TIMEOUT ( 1 , sg_printk ( KERN_INFO , sfp -> parentdp , \"sg_common_write:<S2SV_blank>start_req<S2SV_blank>err=%d\\\\n\" , k ) ) ; sg_finish_rem_req ( srp ) ; return k ; } if ( atomic_read ( & sdp -> detaching ) ) { <S2SV_StartBug> if ( srp -> bio ) <S2SV_EndBug> <S2SV_StartBug> blk_end_request_all ( srp -> rq , - EIO ) ; <S2SV_EndBug> sg_finish_rem_req ( srp ) ; return - ENODEV ; } hp -> duration = jiffies_to_msecs ( jiffies ) ; if ( hp -> interface_id != '\\\\0' && ( SG_FLAG_Q_AT_TAIL & hp -> flags ) ) at_head = 0 ; else at_head = 1 ; srp -> rq -> timeout = timeout ; kref_get ( & sfp -> f_ref ) ; blk_execute_rq_nowait ( sdp -> device -> request_queue , sdp -> disk , srp -> rq , at_head , sg_rq_end_io ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> bio ) { if ( srp -> rq -> cmd != srp -> rq -> __cmd ) kfree ( srp -> rq -> cmd ) ; <S2SV_ModStart> EIO ) ; srp -> rq = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3363\n\n```\nCWE-20 int cifs_mount ( struct super_block * sb , struct cifs_sb_info * cifs_sb , char * mount_data_global , const char * devname ) { int rc ; int xid ; struct smb_vol * volume_info ; struct cifsSesInfo * pSesInfo ; struct cifsTconInfo * tcon ; struct TCP_Server_Info * srvTcp ; char * full_path ; char * mount_data = mount_data_global ; struct tcon_link * tlink ; # ifdef CONFIG_CIFS_DFS_UPCALL struct dfs_info3_param * referrals = NULL ; unsigned int num_referrals = 0 ; int referral_walks_count = 0 ; try_mount_again : # endif rc = 0 ; tcon = NULL ; pSesInfo = NULL ; srvTcp = NULL ; full_path = NULL ; tlink = NULL ; xid = GetXid ( ) ; volume_info = kzalloc ( sizeof ( struct smb_vol ) , GFP_KERNEL ) ; if ( ! volume_info ) { rc = - ENOMEM ; goto out ; } if ( cifs_parse_mount_options ( mount_data , devname , volume_info ) ) { rc = - EINVAL ; goto out ; } if ( volume_info -> nullauth ) { cFYI ( 1 , \"null<S2SV_blank>user\" ) ; volume_info -> username = \"\" ; } else if ( volume_info -> username ) { cFYI ( 1 , \"Username:<S2SV_blank>%s\" , volume_info -> username ) ; } else { cifserror ( \"No<S2SV_blank>username<S2SV_blank>specified\" ) ; rc = - EINVAL ; goto out ; } if ( volume_info -> iocharset == NULL ) { volume_info -> local_nls = load_nls_default ( ) ; } else { volume_info -> local_nls = load_nls ( volume_info -> iocharset ) ; if ( volume_info -> local_nls == NULL ) { cERROR ( 1 , \"CIFS<S2SV_blank>mount<S2SV_blank>error:<S2SV_blank>iocharset<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>found\" , volume_info -> iocharset ) ; rc = - ELIBACC ; goto out ; } } cifs_sb -> local_nls = volume_info -> local_nls ; srvTcp = cifs_get_tcp_session ( volume_info ) ; if ( IS_ERR ( srvTcp ) ) { rc = PTR_ERR ( srvTcp ) ; goto out ; } pSesInfo = cifs_get_smb_ses ( srvTcp , volume_info ) ; if ( IS_ERR ( pSesInfo ) ) { rc = PTR_ERR ( pSesInfo ) ; pSesInfo = NULL ; goto mount_fail_check ; } setup_cifs_sb ( volume_info , cifs_sb ) ; if ( pSesInfo -> capabilities & CAP_LARGE_FILES ) sb -> s_maxbytes = MAX_LFS_FILESIZE ; else sb -> s_maxbytes = MAX_NON_LFS ; sb -> s_time_gran = 100 ; tcon = cifs_get_tcon ( pSesInfo , volume_info ) ; if ( IS_ERR ( tcon ) ) { rc = PTR_ERR ( tcon ) ; tcon = NULL ; goto remote_path_check ; } if ( ! tcon -> ipc ) { CIFSSMBQFSDeviceInfo ( xid , tcon ) ; CIFSSMBQFSAttributeInfo ( xid , tcon ) ; } if ( tcon -> ses -> capabilities & CAP_UNIX ) reset_cifs_unix_caps ( xid , tcon , sb , volume_info ) ; else tcon -> unix_ext = 0 ; if ( ( cifs_sb -> mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS ) == 0 ) convert_delimiter ( cifs_sb -> prepath , CIFS_DIR_SEP ( cifs_sb ) ) ; if ( ( tcon -> unix_ext == 0 ) && ( cifs_sb -> rsize > ( 1024 * 127 ) ) ) { cifs_sb -> rsize = 1024 * 127 ; cFYI ( DBG2 , \"no<S2SV_blank>very<S2SV_blank>large<S2SV_blank>read<S2SV_blank>support,<S2SV_blank>rsize<S2SV_blank>now<S2SV_blank>127K\" ) ; } if ( ! ( tcon -> ses -> capabilities & CAP_LARGE_WRITE_X ) ) cifs_sb -> wsize = min ( cifs_sb -> wsize , ( tcon -> ses -> server -> maxBuf - MAX_CIFS_HDR_SIZE ) ) ; if ( ! ( tcon -> ses -> capabilities & CAP_LARGE_READ_X ) ) cifs_sb -> rsize = min ( cifs_sb -> rsize , ( tcon -> ses -> server -> maxBuf - MAX_CIFS_HDR_SIZE ) ) ; remote_path_check : <S2SV_StartBug> if ( ! rc && cifs_sb -> prepathlen && tcon ) { <S2SV_EndBug> full_path = cifs_build_path_to_root ( cifs_sb , tcon ) ; if ( full_path == NULL ) { rc = - ENOMEM ; goto mount_fail_check ; } rc = is_path_accessible ( xid , tcon , cifs_sb , full_path ) ; if ( rc != 0 && rc != - EREMOTE ) { kfree ( full_path ) ; goto mount_fail_check ; } kfree ( full_path ) ; } if ( rc == - EREMOTE ) { # ifdef CONFIG_CIFS_DFS_UPCALL if ( referral_walks_count > MAX_NESTED_LINKS ) { rc = - ELOOP ; goto mount_fail_check ; } if ( ( cifs_sb -> mnt_cifs_flags & CIFS_MOUNT_POSIX_PATHS ) == 0 ) convert_delimiter ( cifs_sb -> prepath , CIFS_DIR_SEP ( cifs_sb ) ) ; full_path = build_unc_path_to_root ( volume_info , cifs_sb ) ; if ( IS_ERR ( full_path ) ) { rc = PTR_ERR ( full_path ) ; goto mount_fail_check ; } cFYI ( 1 , \"Getting<S2SV_blank>referral<S2SV_blank>for:<S2SV_blank>%s\" , full_path ) ; rc = get_dfs_path ( xid , pSesInfo , full_path + 1 , cifs_sb -> local_nls , & num_referrals , & referrals , cifs_sb -> mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR ) ; if ( ! rc && num_referrals > 0 ) { char * fake_devname = NULL ; if ( mount_data != mount_data_global ) kfree ( mount_data ) ; mount_data = cifs_compose_mount_options ( cifs_sb -> mountdata , full_path + 1 , referrals , & fake_devname ) ; free_dfs_info_array ( referrals , num_referrals ) ; kfree ( fake_devname ) ; kfree ( full_path ) ; if ( IS_ERR ( mount_data ) ) { rc = PTR_ERR ( mount_data ) ; mount_data = NULL ; goto mount_fail_check ; } if ( tcon ) cifs_put_tcon ( tcon ) ; else if ( pSesInfo ) cifs_put_smb_ses ( pSesInfo ) ; cleanup_volume_info ( & volume_info ) ; referral_walks_count ++ ; FreeXid ( xid ) ; goto try_mount_again ; } # else rc = - EOPNOTSUPP ; # endif } if ( rc ) goto mount_fail_check ; tlink = kzalloc ( sizeof * tlink , GFP_KERNEL ) ; if ( tlink == NULL ) { rc = - ENOMEM ; goto mount_fail_check ; } tlink -> tl_uid = pSesInfo -> linux_uid ; tlink -> tl_tcon = tcon ; tlink -> tl_time = jiffies ; set_bit ( TCON_LINK_MASTER , & tlink -> tl_flags ) ; set_bit ( TCON_LINK_IN_TREE , & tlink -> tl_flags ) ; cifs_sb -> master_tlink = tlink ; spin_lock ( & cifs_sb -> tlink_tree_lock ) ; tlink_rb_insert ( & cifs_sb -> tlink_tree , tlink ) ; spin_unlock ( & cifs_sb -> tlink_tree_lock ) ; queue_delayed_work ( system_nrt_wq , & cifs_sb -> prune_tlinks , TLINK_IDLE_EXPIRE ) ; mount_fail_check : if ( rc ) { if ( mount_data != mount_data_global ) kfree ( mount_data ) ; if ( tcon ) cifs_put_tcon ( tcon ) ; else if ( pSesInfo ) cifs_put_smb_ses ( pSesInfo ) ; else cifs_put_tcp_session ( srvTcp ) ; goto out ; } out : cleanup_volume_info ( & volume_info ) ; FreeXid ( xid ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! rc <S2SV_ModEnd> && tcon )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-252(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16643\n\n```\nCWE-252 static Image * ReadPWPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char filename [ MagickPathExtent ] ; FILE * file ; Image * image , * next_image , * pwp_image ; ImageInfo * read_info ; int c , unique_file ; MagickBooleanType status ; register Image * p ; register ssize_t i ; size_t filesize , length ; ssize_t count ; unsigned char magick [ MagickPathExtent ] ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } pwp_image = image ; memset ( magick , 0 , sizeof ( magick ) ) ; count = ReadBlob ( pwp_image , 5 , magick ) ; if ( ( count != 5 ) || ( LocaleNCompare ( ( char * ) magick , \"SFW95\" , 5 ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; read_info = CloneImageInfo ( image_info ) ; ( void ) SetImageInfoProgressMonitor ( read_info , ( MagickProgressMonitor ) NULL , ( void * ) NULL ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; unique_file = AcquireUniqueFileResource ( filename ) ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"sfw:%s\" , filename ) ; for ( ; ; ) { ( void ) memset ( magick , 0 , sizeof ( magick ) ) ; for ( c = ReadBlobByte ( pwp_image ) ; c != EOF ; c = ReadBlobByte ( pwp_image ) ) { for ( i = 0 ; i < 17 ; i ++ ) magick [ i ] = magick [ i + 1 ] ; magick [ 17 ] = ( unsigned char ) c ; if ( LocaleNCompare ( ( char * ) ( magick + 12 ) , \"SFW94A\" , 6 ) == 0 ) break ; } if ( c == EOF ) { ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } if ( LocaleNCompare ( ( char * ) ( magick + 12 ) , \"SFW94A\" , 6 ) != 0 ) { ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } file = ( FILE * ) NULL ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( ( unique_file == - 1 ) || ( file == ( FILE * ) NULL ) ) { ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; ThrowFileException ( exception , FileOpenError , \"UnableToWriteFile\" , image -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = fwrite ( \"SFW94A\" , 1 , 6 , file ) ; ( void ) length ; filesize = 65535UL * magick [ 2 ] + 256L * magick [ 1 ] + magick [ 0 ] ; for ( i = 0 ; i < ( ssize_t ) filesize ; i ++ ) { c = ReadBlobByte ( pwp_image ) ; if ( c == EOF ) break ; <S2SV_StartBug> ( void ) fputc ( c , file ) ; <S2SV_EndBug> } ( void ) fclose ( file ) ; if ( c == EOF ) { ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } next_image = ReadImage ( read_info , exception ) ; if ( next_image == ( Image * ) NULL ) break ; ( void ) FormatLocaleString ( next_image -> filename , MagickPathExtent , \"slide_%02ld.sfw\" , ( long ) next_image -> scene ) ; if ( image == ( Image * ) NULL ) image = next_image ; else { for ( p = image ; p -> next != ( Image * ) NULL ; p = GetNextImageInList ( p ) ) ; next_image -> previous = p ; next_image -> scene = p -> scene + 1 ; p -> next = next_image ; } if ( image_info -> number_scenes != 0 ) if ( next_image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( pwp_image ) , GetBlobSize ( pwp_image ) ) ; if ( status == MagickFalse ) break ; } if ( unique_file != - 1 ) ( void ) close ( unique_file ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( image != ( Image * ) NULL ) { if ( EOFBlob ( image ) != MagickFalse ) { char * message ; message = GetExceptionMessage ( errno ) ; ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"UnexpectedEndOfFile\" , \"`%s\\':<S2SV_blank>%s\" , image -> filename , message ) ; message = DestroyString ( message ) ; } ( void ) CloseBlob ( image ) ; } return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; if ( <S2SV_ModEnd> fputc ( c <S2SV_ModStart> , file ) != c ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12210\n\n```\nCWE-200 int pam_sm_authenticate ( pam_handle_t * pamh , int flags , int argc , const char * * argv ) { struct passwd * pw = NULL , pw_s ; const char * user = NULL ; cfg_t cfg_st ; cfg_t * cfg = & cfg_st ; char buffer [ BUFSIZE ] ; char * buf = NULL ; char * authfile_dir ; size_t authfile_dir_len ; int pgu_ret , gpn_ret ; int retval = PAM_IGNORE ; device_t * devices = NULL ; unsigned n_devices = 0 ; int openasuser ; int should_free_origin = 0 ; int should_free_appid = 0 ; int should_free_auth_file = 0 ; int should_free_authpending_file = 0 ; parse_cfg ( flags , argc , argv , cfg ) ; if ( ! cfg -> origin ) { strcpy ( buffer , DEFAULT_ORIGIN_PREFIX ) ; if ( gethostname ( buffer + strlen ( DEFAULT_ORIGIN_PREFIX ) , BUFSIZE - strlen ( DEFAULT_ORIGIN_PREFIX ) ) == - 1 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>host<S2SV_blank>name\" ) ; goto done ; } DBG ( \"Origin<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>using<S2SV_blank>\\\\\"%s\\\\\"\" , buffer ) ; cfg -> origin = strdup ( buffer ) ; if ( ! cfg -> origin ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto done ; } else { should_free_origin = 1 ; } } if ( ! cfg -> appid ) { DBG ( \"Appid<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>using<S2SV_blank>the<S2SV_blank>same<S2SV_blank>value<S2SV_blank>of<S2SV_blank>origin<S2SV_blank>(%s)\" , cfg -> origin ) ; cfg -> appid = strdup ( cfg -> origin ) ; if ( ! cfg -> appid ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) goto done ; } else { should_free_appid = 1 ; } } if ( cfg -> max_devs == 0 ) { DBG ( \"Maximum<S2SV_blank>devices<S2SV_blank>number<S2SV_blank>not<S2SV_blank>set.<S2SV_blank>Using<S2SV_blank>default<S2SV_blank>(%d)\" , MAX_DEVS ) ; cfg -> max_devs = MAX_DEVS ; } devices = malloc ( sizeof ( device_t ) * cfg -> max_devs ) ; if ( ! devices ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } pgu_ret = pam_get_user ( pamh , & user , NULL ) ; if ( pgu_ret != PAM_SUCCESS || user == NULL ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>access<S2SV_blank>user<S2SV_blank>%s\" , user ) ; retval = PAM_CONV_ERR ; goto done ; } DBG ( \"Requesting<S2SV_blank>authentication<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\" , user ) ; gpn_ret = getpwnam_r ( user , & pw_s , buffer , sizeof ( buffer ) , & pw ) ; if ( gpn_ret != 0 || pw == NULL || pw -> pw_dir == NULL || pw -> pw_dir [ 0 ] != '/' ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>credentials<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s,<S2SV_blank>(%s)\" , user , strerror ( errno ) ) ; retval = PAM_USER_UNKNOWN ; goto done ; } DBG ( \"Found<S2SV_blank>user<S2SV_blank>%s\" , user ) ; DBG ( \"Home<S2SV_blank>directory<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>%s\" , user , pw -> pw_dir ) ; if ( ! cfg -> auth_file ) { buf = NULL ; authfile_dir = secure_getenv ( DEFAULT_AUTHFILE_DIR_VAR ) ; if ( ! authfile_dir ) { DBG ( \"Variable<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>set.<S2SV_blank>Using<S2SV_blank>default<S2SV_blank>value<S2SV_blank>($HOME/.config/)\" , DEFAULT_AUTHFILE_DIR_VAR ) ; authfile_dir_len = strlen ( pw -> pw_dir ) + strlen ( \"/.config\" ) + strlen ( DEFAULT_AUTHFILE ) + 1 ; buf = malloc ( sizeof ( char ) * ( authfile_dir_len ) ) ; if ( ! buf ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } snprintf ( buf , authfile_dir_len , \"%s/.config%s\" , pw -> pw_dir , DEFAULT_AUTHFILE ) ; } else { DBG ( \"Variable<S2SV_blank>%s<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%s\" , DEFAULT_AUTHFILE_DIR_VAR , authfile_dir ) ; authfile_dir_len = strlen ( authfile_dir ) + strlen ( DEFAULT_AUTHFILE ) + 1 ; buf = malloc ( sizeof ( char ) * ( authfile_dir_len ) ) ; if ( ! buf ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } snprintf ( buf , authfile_dir_len , \"%s%s\" , authfile_dir , DEFAULT_AUTHFILE ) ; } DBG ( \"Using<S2SV_blank>default<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , buf ) ; cfg -> auth_file = buf ; should_free_auth_file = 1 ; buf = NULL ; } else { DBG ( \"Using<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , cfg -> auth_file ) ; } openasuser = geteuid ( ) == 0 && cfg -> openasuser ; if ( openasuser ) { if ( seteuid ( pw_s . pw_uid ) ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>user<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw_s . pw_uid ) ; retval = PAM_IGNORE ; goto done ; } DBG ( \"Switched<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw_s . pw_uid ) ; } retval = get_devices_from_authfile ( cfg -> auth_file , user , cfg -> max_devs , cfg -> debug , cfg -> debug_file , devices , & n_devices ) ; if ( openasuser ) { if ( seteuid ( 0 ) ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>0\" ) ; retval = PAM_IGNORE ; goto done ; } DBG ( \"Switched<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>0\" ) ; } if ( retval != 1 ) { n_devices = 0 ; } if ( n_devices == 0 ) { if ( cfg -> nouserok ) { DBG ( \"Found<S2SV_blank>no<S2SV_blank>devices<S2SV_blank>but<S2SV_blank>nouserok<S2SV_blank>specified.<S2SV_blank>Skipping<S2SV_blank>authentication\" ) ; retval = PAM_SUCCESS ; goto done ; } else if ( retval != 1 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>devices<S2SV_blank>from<S2SV_blank>file<S2SV_blank>%s\" , cfg -> auth_file ) ; retval = PAM_AUTHINFO_UNAVAIL ; goto done ; } else { DBG ( \"Found<S2SV_blank>no<S2SV_blank>devices.<S2SV_blank>Aborting.\" ) ; retval = PAM_AUTHINFO_UNAVAIL ; goto done ; } } if ( ! cfg -> authpending_file ) { int actual_size = snprintf ( buffer , BUFSIZE , DEFAULT_AUTHPENDING_FILE_PATH , getuid ( ) ) ; if ( actual_size >= 0 && actual_size < BUFSIZE ) { cfg -> authpending_file = strdup ( buffer ) ; } if ( ! cfg -> authpending_file ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>the<S2SV_blank>authpending_file,<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications<S2SV_blank>will<S2SV_blank>not<S2SV_blank>be<S2SV_blank>emitted\" ) ; } else { should_free_authpending_file = 1 ; } } else { if ( strlen ( cfg -> authpending_file ) == 0 ) { DBG ( \"authpending_file<S2SV_blank>is<S2SV_blank>set<S2SV_blank>to<S2SV_blank>an<S2SV_blank>empty<S2SV_blank>value,<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications<S2SV_blank>will<S2SV_blank>be<S2SV_blank>disabled\" ) ; cfg -> authpending_file = NULL ; } } int authpending_file_descriptor = - 1 ; if ( cfg -> authpending_file ) { DBG ( \"Using<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>for<S2SV_blank>emitting<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications\" , cfg -> authpending_file ) ; <S2SV_StartBug> authpending_file_descriptor = open ( cfg -> authpending_file , O_RDONLY | O_CREAT , 0664 ) ; <S2SV_EndBug> if ( authpending_file_descriptor < 0 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>emit<S2SV_blank>\\'authentication<S2SV_blank>started\\'<S2SV_blank>notification<S2SV_blank>by<S2SV_blank>opening<S2SV_blank>the<S2SV_blank>file<S2SV_blank>\\'%s\\',<S2SV_blank>(%s)\" , cfg -> authpending_file , strerror ( errno ) ) ; } } if ( cfg -> manual == 0 ) { if ( cfg -> interactive ) { converse ( pamh , PAM_PROMPT_ECHO_ON , cfg -> prompt != NULL ? cfg -> prompt : DEFAULT_PROMPT ) ; } retval = do_authentication ( cfg , devices , n_devices , pamh ) ; } else { retval = do_manual_authentication ( cfg , devices , n_devices , pamh ) ; } if ( authpending_file_descriptor >= 0 ) { if ( close ( authpending_file_descriptor ) < 0 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>emit<S2SV_blank>\\'authentication<S2SV_blank>stopped\\'<S2SV_blank>notification<S2SV_blank>by<S2SV_blank>closing<S2SV_blank>the<S2SV_blank>file<S2SV_blank>\\'%s\\',<S2SV_blank>(%s)\" , cfg -> authpending_file , strerror ( errno ) ) ; } } if ( retval != 1 ) { DBG ( \"do_authentication<S2SV_blank>returned<S2SV_blank>%d\" , retval ) ; retval = PAM_AUTH_ERR ; goto done ; } retval = PAM_SUCCESS ; done : free_devices ( devices , n_devices ) ; if ( buf ) { free ( buf ) ; buf = NULL ; } if ( should_free_origin ) { free ( ( char * ) cfg -> origin ) ; cfg -> origin = NULL ; } if ( should_free_appid ) { free ( ( char * ) cfg -> appid ) ; cfg -> appid = NULL ; } if ( should_free_auth_file ) { free ( ( char * ) cfg -> auth_file ) ; cfg -> auth_file = NULL ; } if ( should_free_authpending_file ) { free ( ( char * ) cfg -> authpending_file ) ; cfg -> authpending_file = NULL ; } if ( cfg -> alwaysok && retval != PAM_SUCCESS ) { DBG ( \"alwaysok<S2SV_blank>needed<S2SV_blank>(otherwise<S2SV_blank>return<S2SV_blank>with<S2SV_blank>%d)\" , retval ) ; retval = PAM_SUCCESS ; } DBG ( \"done.<S2SV_blank>[%s]\" , pam_strerror ( pamh , retval ) ) ; <S2SV_StartBug> return retval ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> O_RDONLY | O_CREAT | O_CLOEXEC | O_NOFOLLOW | O_NOCTTY <S2SV_ModStart> ) ) ; if ( cfg -> is_custom_debug_file ) { fclose ( cfg -> debug_file ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static void nsc_rle_decode ( BYTE * in , BYTE * out , UINT32 originalSize ) <S2SV_EndBug> { UINT32 len ; UINT32 left ; BYTE value ; left = originalSize ; while ( left > 4 ) { value = * in ++ ; if ( left == 5 ) { <S2SV_StartBug> * out ++ = value ; <S2SV_EndBug> left -- ; } else if ( value == * in ) { in ++ ; if ( * in < 0xFF ) { len = ( UINT32 ) * in ++ ; len += 2 ; } else { in ++ ; len = * ( ( UINT32 * ) in ) ; in += 4 ; } <S2SV_StartBug> FillMemory ( out , len , value ) ; <S2SV_EndBug> out += len ; left -= len ; } else { <S2SV_StartBug> * out ++ = value ; <S2SV_EndBug> left -- ; } } * ( ( UINT32 * ) out ) = * ( ( UINT32 * ) in ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> nsc_rle_decode ( BYTE <S2SV_ModStart> BYTE * out , UINT32 outSize <S2SV_ModStart> 5 ) { if ( outSize < 1 ) return FALSE ; outSize -- ; <S2SV_ModStart> 4 ; } if ( outSize < len ) return FALSE ; outSize -= len ; <S2SV_ModStart> } else { if ( outSize < 1 ) return FALSE ; outSize -- ; * out ++ = value ; left -- ; } } if ( ( outSize < 4 ) || ( left < 4 ) ) return FALSE ; memcpy ( out , in , 4 ) ; return TRUE <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16642\n\n```\nCWE-787 <S2SV_StartBug> static void InsertRow ( Image * image , ssize_t depth , unsigned char * p , ssize_t y , <S2SV_EndBug> ExceptionInfo * exception ) { <S2SV_StartBug> size_t bit ; ssize_t x ; <S2SV_EndBug> <S2SV_StartBug> register Quantum * q ; <S2SV_EndBug> Quantum index ; index = 0 ; <S2SV_StartBug> switch ( depth ) <S2SV_EndBug> { case 1 : { <S2SV_StartBug> q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; <S2SV_EndBug> if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { <S2SV_StartBug> index = ( Quantum ) ( ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ) ? 0x01 : 0x00 ) ; <S2SV_EndBug> SetPixelIndex ( image , index , q ) ; <S2SV_StartBug> q += GetPixelChannels ( image ) ; <S2SV_EndBug> } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { <S2SV_StartBug> for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) <S2SV_EndBug> { <S2SV_StartBug> index = ( Quantum ) ( ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ) ? 0x01 : 0x00 ) ; <S2SV_EndBug> SetPixelIndex ( image , index , q ) ; <S2SV_StartBug> q += GetPixelChannels ( image ) ; <S2SV_EndBug> } p ++ ; } <S2SV_StartBug> ( void ) SyncAuthenticPixels ( image , exception ) ; <S2SV_EndBug> break ; } case 2 : { <S2SV_StartBug> q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; <S2SV_EndBug> <S2SV_StartBug> if ( q == ( Quantum * ) NULL ) <S2SV_EndBug> break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { <S2SV_StartBug> index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 , exception ) ; <S2SV_EndBug> SetPixelIndex ( image , index , q ) ; <S2SV_StartBug> q += GetPixelChannels ( image ) ; <S2SV_EndBug> <S2SV_StartBug> index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 , exception ) ; <S2SV_EndBug> SetPixelIndex ( image , index , q ) ; <S2SV_StartBug> q += GetPixelChannels ( image ) ; <S2SV_EndBug> index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; } if ( ( image -> columns % 4 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; if ( ( image -> columns % 4 ) >= 1 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; if ( ( image -> columns % 4 ) >= 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; } } p ++ ; } ( void ) SyncAuthenticPixels ( image , exception ) ; break ; } case 4 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0xf , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p ) & 0xf , exception ) ; SetPixelIndex ( image , index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) { <S2SV_StartBug> index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0xf , exception ) ; <S2SV_EndBug> SetPixelIndex ( image , index , q ) ; <S2SV_StartBug> q += GetPixelChannels ( image ) ; <S2SV_EndBug> <S2SV_StartBug> p ++ ; <S2SV_EndBug> } ( void ) SyncAuthenticPixels ( image , exception ) ; break ; } case 8 : { <S2SV_StartBug> q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; <S2SV_EndBug> <S2SV_StartBug> if ( q == ( Quantum * ) NULL ) <S2SV_EndBug> break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { <S2SV_StartBug> index = ConstrainColormapIndex ( image , * p , exception ) ; <S2SV_EndBug> SetPixelIndex ( image , index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } ( void ) SyncAuthenticPixels ( image , exception ) ; break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static MagickBooleanType <S2SV_ModEnd> InsertRow ( Image <S2SV_ModStart> image , ssize_t bpp <S2SV_ModEnd> , unsigned char <S2SV_ModStart> exception ) { int bit ; Quantum index <S2SV_ModEnd> ; register Quantum <S2SV_ModStart> ; register Quantum * q ; ssize_t x ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) return ( MagickFalse ) <S2SV_ModEnd> ; switch ( <S2SV_ModStart> ; switch ( bpp <S2SV_ModEnd> ) { case <S2SV_ModStart> 1 : { <S2SV_ModEnd> for ( x <S2SV_ModStart> index = ( <S2SV_ModEnd> ( * p <S2SV_ModStart> 0x80 >> bit <S2SV_ModEnd> ) ? 0x01 <S2SV_ModStart> q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; <S2SV_ModStart> bit < ( ssize_t ) ( <S2SV_ModStart> index = ( <S2SV_ModEnd> ( * p <S2SV_ModStart> 0x80 >> bit <S2SV_ModEnd> ) ? 0x01 <S2SV_ModStart> q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; <S2SV_ModStart> ++ ; } <S2SV_ModEnd> break ; } <S2SV_ModStart> 2 : { for ( x = 0 ; x < ( ( ssize_t ) <S2SV_ModEnd> image -> columns <S2SV_ModStart> image -> columns - 3 ) ; x += 4 ) { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; p ++ ; } if ( ( image -> columns % 4 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; if ( ( image -> columns % 4 ) > 1 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 <S2SV_ModEnd> , exception ) <S2SV_ModStart> exception ) ; SetPixelIndex ( image , index , q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; if ( ( image -> columns % 4 ) > 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; } } p ++ ; } break ; } case 4 : { <S2SV_ModEnd> for ( x <S2SV_ModStart> * p >> 4 ) & 0x0f <S2SV_ModEnd> , exception ) <S2SV_ModStart> q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; <S2SV_ModStart> ( * p ) & 0x0f <S2SV_ModEnd> , exception ) <S2SV_ModStart> q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; <S2SV_ModStart> ( image ) <S2SV_ModEnd> ; } if <S2SV_ModStart> 4 ) & 0x0f <S2SV_ModEnd> , exception ) <S2SV_ModStart> q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; <S2SV_ModStart> image ) ; } <S2SV_ModEnd> break ; } <S2SV_ModStart> 8 : { for ( x = 0 ; x < ( ssize_t ) <S2SV_ModEnd> image -> columns <S2SV_ModStart> image -> columns ; x ++ ) { index = ConstrainColormapIndex ( image , * p <S2SV_ModEnd> , exception ) <S2SV_ModStart> exception ) ; SetPixelIndex ( image , index , q ) ; if ( index < image -> colors ) SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } } break ; case 24 : <S2SV_ModEnd> for ( x <S2SV_ModStart> ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } if ( ! SyncAuthenticPixels ( image <S2SV_ModEnd> , exception ) <S2SV_ModStart> , exception ) ) return ( MagickFalse ) ; return ( MagickTrue ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7487\n\n```\nCWE-416 static int ipxitf_ioctl ( unsigned int cmd , void __user * arg ) { int rc = - EINVAL ; struct ifreq ifr ; int val ; switch ( cmd ) { case SIOCSIFADDR : { struct sockaddr_ipx * sipx ; struct ipx_interface_definition f ; rc = - EFAULT ; if ( copy_from_user ( & ifr , arg , sizeof ( ifr ) ) ) break ; sipx = ( struct sockaddr_ipx * ) & ifr . ifr_addr ; rc = - EINVAL ; if ( sipx -> sipx_family != AF_IPX ) break ; f . ipx_network = sipx -> sipx_network ; memcpy ( f . ipx_device , ifr . ifr_name , sizeof ( f . ipx_device ) ) ; memcpy ( f . ipx_node , sipx -> sipx_node , IPX_NODE_LEN ) ; f . ipx_dlink_type = sipx -> sipx_type ; f . ipx_special = sipx -> sipx_special ; if ( sipx -> sipx_action == IPX_DLTITF ) rc = ipxitf_delete ( & f ) ; else rc = ipxitf_create ( & f ) ; break ; } case SIOCGIFADDR : { struct sockaddr_ipx * sipx ; struct ipx_interface * ipxif ; struct net_device * dev ; rc = - EFAULT ; if ( copy_from_user ( & ifr , arg , sizeof ( ifr ) ) ) break ; sipx = ( struct sockaddr_ipx * ) & ifr . ifr_addr ; dev = __dev_get_by_name ( & init_net , ifr . ifr_name ) ; rc = - ENODEV ; if ( ! dev ) break ; ipxif = ipxitf_find_using_phys ( dev , ipx_map_frame_type ( sipx -> sipx_type ) ) ; rc = - EADDRNOTAVAIL ; if ( ! ipxif ) break ; sipx -> sipx_family = AF_IPX ; sipx -> sipx_network = ipxif -> if_netnum ; memcpy ( sipx -> sipx_node , ipxif -> if_node , sizeof ( sipx -> sipx_node ) ) ; <S2SV_StartBug> rc = - EFAULT ; <S2SV_EndBug> <S2SV_StartBug> if ( copy_to_user ( arg , & ifr , sizeof ( ifr ) ) ) <S2SV_EndBug> break ; <S2SV_StartBug> ipxitf_put ( ipxif ) ; <S2SV_EndBug> rc = 0 ; break ; } case SIOCAIPXITFCRT : rc = - EFAULT ; if ( get_user ( val , ( unsigned char __user * ) arg ) ) break ; rc = 0 ; ipxcfg_auto_create_interfaces = val ; break ; case SIOCAIPXPRISLT : rc = - EFAULT ; if ( get_user ( val , ( unsigned char __user * ) arg ) ) break ; rc = 0 ; ipxcfg_set_auto_select ( val ) ; break ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; rc = 0 ; if ( copy_to_user ( arg , & ifr , sizeof ( ifr ) ) ) rc = <S2SV_ModStart> - EFAULT ; <S2SV_ModEnd> ipxitf_put ( ipxif <S2SV_ModStart> ( ipxif ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20854\n\n```\nCWE-125 static struct phy * serdes_simple_xlate ( struct device * dev , struct of_phandle_args * args ) { struct serdes_ctrl * ctrl = dev_get_drvdata ( dev ) ; unsigned int port , idx , i ; if ( args -> args_count != 2 ) return ERR_PTR ( - EINVAL ) ; port = args -> args [ 0 ] ; idx = args -> args [ 1 ] ; <S2SV_StartBug> for ( i = 0 ; i <= SERDES_MAX ; i ++ ) { <S2SV_EndBug> struct serdes_macro * macro = phy_get_drvdata ( ctrl -> phys [ i ] ) ; if ( idx != macro -> idx ) continue ; if ( idx != SERDES6G ( 0 ) && macro -> port >= 0 ) return ERR_PTR ( - EBUSY ) ; macro -> port = port ; return ctrl -> phys [ i ] ; } return ERR_PTR ( - ENODEV ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; i < <S2SV_ModEnd> SERDES_MAX ; i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6197\n\n```\nCWE-20 static int ovl_remove_upper ( struct dentry * dentry , bool is_dir ) { struct dentry * upperdir = ovl_dentry_upper ( dentry -> d_parent ) ; struct inode * dir = upperdir -> d_inode ; <S2SV_StartBug> struct dentry * upper = ovl_dentry_upper ( dentry ) ; <S2SV_EndBug> int err ; inode_lock_nested ( dir , I_MUTEX_PARENT ) ; <S2SV_StartBug> err = - ESTALE ; <S2SV_EndBug> <S2SV_StartBug> if ( upper -> d_parent == upperdir ) { <S2SV_EndBug> dget ( upper ) ; if ( is_dir ) err = vfs_rmdir ( dir , upper ) ; else err = vfs_unlink ( dir , upper , NULL ) ; <S2SV_StartBug> dput ( upper ) ; <S2SV_EndBug> ovl_dentry_version_inc ( dentry -> d_parent ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( ! err ) d_drop ( dentry ) ; <S2SV_StartBug> inode_unlock ( dir ) ; <S2SV_EndBug> return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dentry * upper <S2SV_ModEnd> ; int err <S2SV_ModStart> I_MUTEX_PARENT ) ; upper = lookup_one_len ( dentry -> d_name . name , upperdir , dentry -> d_name . len ) ; err = PTR_ERR ( upper ) ; if ( IS_ERR ( upper ) ) goto out_unlock ; <S2SV_ModStart> if ( upper == ovl_dentry_upper ( dentry ) ) { <S2SV_ModEnd> if ( is_dir <S2SV_ModStart> NULL ) ; <S2SV_ModEnd> ovl_dentry_version_inc ( dentry <S2SV_ModStart> ) ; } dput ( upper ) ; <S2SV_ModStart> dentry ) ; out_unlock :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t getHostByName ( NetInterface * interface , const char_t * name , IpAddr * ipAddr , uint_t flags ) { error_t error ; HostType type ; HostnameResolver protocol ; # if ( IPV4_SUPPORT == ENABLED ) type = HOST_TYPE_IPV4 ; # elif ( IPV6_SUPPORT == ENABLED ) type = HOST_TYPE_IPV6 ; # else type = HOST_TYPE_ANY ; # endif # if ( DNS_CLIENT_SUPPORT == ENABLED ) protocol = HOST_NAME_RESOLVER_DNS ; # elif ( MDNS_CLIENT_SUPPORT == ENABLED ) protocol = HOST_NAME_RESOLVER_MDNS ; # elif ( NBNS_CLIENT_SUPPORT == ENABLED ) protocol = HOST_NAME_RESOLVER_NBNS ; # elif ( LLMNR_CLIENT_SUPPORT == ENABLED ) protocol = HOST_NAME_RESOLVER_LLMNR ; # else protocol = HOST_NAME_RESOLVER_ANY ; # endif if ( name == NULL || ipAddr == NULL ) return ERROR_INVALID_PARAMETER ; if ( interface == NULL ) interface = netGetDefaultInterface ( ) ; error = ipStringToAddr ( name , ipAddr ) ; if ( error ) { if ( flags & HOST_TYPE_IPV4 ) type = HOST_TYPE_IPV4 ; else if ( flags & HOST_TYPE_IPV6 ) type = HOST_TYPE_IPV6 ; if ( flags & HOST_NAME_RESOLVER_DNS ) { protocol = HOST_NAME_RESOLVER_DNS ; } else if ( flags & HOST_NAME_RESOLVER_MDNS ) { protocol = HOST_NAME_RESOLVER_MDNS ; } else if ( flags & HOST_NAME_RESOLVER_NBNS ) { protocol = HOST_NAME_RESOLVER_NBNS ; } else if ( flags & HOST_NAME_RESOLVER_LLMNR ) { protocol = HOST_NAME_RESOLVER_LLMNR ; } else { size_t n = osStrlen ( name ) ; if ( n >= 6 && ! osStrcasecmp ( name + n - 6 , \".local\" ) ) { # if ( MDNS_CLIENT_SUPPORT == ENABLED ) protocol = HOST_NAME_RESOLVER_MDNS ; # endif } <S2SV_StartBug> else if ( n <= 15 && ! strchr ( name , '.' ) && type == HOST_TYPE_IPV4 ) <S2SV_EndBug> { # if ( NBNS_CLIENT_SUPPORT == ENABLED ) protocol = HOST_NAME_RESOLVER_NBNS ; # endif } <S2SV_StartBug> else if ( ! strchr ( name , '.' ) ) <S2SV_EndBug> { # if ( LLMNR_CLIENT_SUPPORT == ENABLED ) protocol = HOST_NAME_RESOLVER_LLMNR ; # endif } } # if ( DNS_CLIENT_SUPPORT == ENABLED ) if ( protocol == HOST_NAME_RESOLVER_DNS ) { error = dnsResolve ( interface , name , type , ipAddr ) ; } else # endif # if ( MDNS_CLIENT_SUPPORT == ENABLED ) if ( protocol == HOST_NAME_RESOLVER_MDNS ) { error = mdnsClientResolve ( interface , name , type , ipAddr ) ; } else # endif # if ( NBNS_CLIENT_SUPPORT == ENABLED && IPV4_SUPPORT == ENABLED ) if ( protocol == HOST_NAME_RESOLVER_NBNS ) { error = nbnsResolve ( interface , name , ipAddr ) ; } else # endif # if ( LLMNR_CLIENT_SUPPORT == ENABLED ) if ( protocol == HOST_NAME_RESOLVER_LLMNR ) { error = llmnrResolve ( interface , name , type , ipAddr ) ; } else # endif { error = ERROR_INVALID_PARAMETER ; } } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 15 && ! osStrchr <S2SV_ModEnd> ( name , <S2SV_ModStart> if ( ! osStrchr <S2SV_ModEnd> ( name ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6252\n\n```\nCWE-399 long vhost_dev_ioctl ( struct vhost_dev * d , unsigned int ioctl , void __user * argp ) { struct file * eventfp , * filep = NULL ; struct eventfd_ctx * ctx = NULL ; u64 p ; long r ; int i , fd ; if ( ioctl == VHOST_SET_OWNER ) { r = vhost_dev_set_owner ( d ) ; goto done ; } r = vhost_dev_check_owner ( d ) ; if ( r ) goto done ; switch ( ioctl ) { case VHOST_SET_MEM_TABLE : r = vhost_set_memory ( d , argp ) ; break ; case VHOST_SET_LOG_BASE : if ( copy_from_user ( & p , argp , sizeof p ) ) { r = - EFAULT ; break ; } if ( ( u64 ) ( unsigned long ) p != p ) { r = - EFAULT ; break ; } for ( i = 0 ; i < d -> nvqs ; ++ i ) { struct vhost_virtqueue * vq ; void __user * base = ( void __user * ) ( unsigned long ) p ; vq = d -> vqs [ i ] ; mutex_lock ( & vq -> mutex ) ; if ( vq -> private_data && ! vq_log_access_ok ( vq , base ) ) r = - EFAULT ; else vq -> log_base = base ; mutex_unlock ( & vq -> mutex ) ; } break ; case VHOST_SET_LOG_FD : r = get_user ( fd , ( int __user * ) argp ) ; if ( r < 0 ) break ; eventfp = fd == - 1 ? NULL : eventfd_fget ( fd ) ; if ( IS_ERR ( eventfp ) ) { r = PTR_ERR ( eventfp ) ; break ; } if ( eventfp != d -> log_file ) { filep = d -> log_file ; <S2SV_StartBug> ctx = d -> log_ctx ; <S2SV_EndBug> d -> log_ctx = eventfp ? eventfd_ctx_fileget ( eventfp ) : NULL ; } else filep = eventfp ; for ( i = 0 ; i < d -> nvqs ; ++ i ) { mutex_lock ( & d -> vqs [ i ] -> mutex ) ; d -> vqs [ i ] -> log_ctx = d -> log_ctx ; mutex_unlock ( & d -> vqs [ i ] -> mutex ) ; } if ( ctx ) eventfd_ctx_put ( ctx ) ; if ( filep ) fput ( filep ) ; break ; default : r = - ENOIOCTLCMD ; break ; } done : return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> log_file ; d -> log_file = eventfp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9074\n\n```\nCWE-125 int ip6_fragment ( struct net * net , struct sock * sk , struct sk_buff * skb , int ( * output ) ( struct net * , struct sock * , struct sk_buff * ) ) { struct sk_buff * frag ; struct rt6_info * rt = ( struct rt6_info * ) skb_dst ( skb ) ; struct ipv6_pinfo * np = skb -> sk && ! dev_recursion_level ( ) ? inet6_sk ( skb -> sk ) : NULL ; struct ipv6hdr * tmp_hdr ; struct frag_hdr * fh ; unsigned int mtu , hlen , left , len ; int hroom , troom ; __be32 frag_id ; int ptr , offset = 0 , err = 0 ; u8 * prevhdr , nexthdr = 0 ; <S2SV_StartBug> hlen = ip6_find_1stfragopt ( skb , & prevhdr ) ; <S2SV_EndBug> nexthdr = * prevhdr ; mtu = ip6_skb_dst_mtu ( skb ) ; if ( unlikely ( ! skb -> ignore_df && skb -> len > mtu ) ) goto fail_toobig ; if ( IP6CB ( skb ) -> frag_max_size ) { if ( IP6CB ( skb ) -> frag_max_size > mtu ) goto fail_toobig ; mtu = IP6CB ( skb ) -> frag_max_size ; if ( mtu < IPV6_MIN_MTU ) mtu = IPV6_MIN_MTU ; } if ( np && np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } if ( mtu < hlen + sizeof ( struct frag_hdr ) + 8 ) goto fail_toobig ; mtu -= hlen + sizeof ( struct frag_hdr ) ; frag_id = ipv6_select_ident ( net , & ipv6_hdr ( skb ) -> daddr , & ipv6_hdr ( skb ) -> saddr ) ; if ( skb -> ip_summed == CHECKSUM_PARTIAL && ( err = skb_checksum_help ( skb ) ) ) goto fail ; hroom = LL_RESERVED_SPACE ( rt -> dst . dev ) ; if ( skb_has_frag_list ( skb ) ) { unsigned int first_len = skb_pagelen ( skb ) ; struct sk_buff * frag2 ; if ( first_len - hlen > mtu || ( ( first_len - hlen ) & 7 ) || skb_cloned ( skb ) || skb_headroom ( skb ) < ( hroom + sizeof ( struct frag_hdr ) ) ) goto slow_path ; skb_walk_frags ( skb , frag ) { if ( frag -> len > mtu || ( ( frag -> len & 7 ) && frag -> next ) || skb_headroom ( frag ) < ( hlen + hroom + sizeof ( struct frag_hdr ) ) ) goto slow_path_clean ; if ( skb_shared ( frag ) ) goto slow_path_clean ; BUG_ON ( frag -> sk ) ; if ( skb -> sk ) { frag -> sk = skb -> sk ; frag -> destructor = sock_wfree ; } skb -> truesize -= frag -> truesize ; } err = 0 ; offset = 0 ; * prevhdr = NEXTHDR_FRAGMENT ; tmp_hdr = kmemdup ( skb_network_header ( skb ) , hlen , GFP_ATOMIC ) ; if ( ! tmp_hdr ) { IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; err = - ENOMEM ; goto fail ; } frag = skb_shinfo ( skb ) -> frag_list ; skb_frag_list_init ( skb ) ; __skb_pull ( skb , hlen ) ; fh = ( struct frag_hdr * ) __skb_push ( skb , sizeof ( struct frag_hdr ) ) ; __skb_push ( skb , hlen ) ; skb_reset_network_header ( skb ) ; memcpy ( skb_network_header ( skb ) , tmp_hdr , hlen ) ; fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; fh -> frag_off = htons ( IP6_MF ) ; fh -> identification = frag_id ; first_len = skb_pagelen ( skb ) ; skb -> data_len = first_len - skb_headlen ( skb ) ; skb -> len = first_len ; ipv6_hdr ( skb ) -> payload_len = htons ( first_len - sizeof ( struct ipv6hdr ) ) ; dst_hold ( & rt -> dst ) ; for ( ; ; ) { if ( frag ) { frag -> ip_summed = CHECKSUM_NONE ; skb_reset_transport_header ( frag ) ; fh = ( struct frag_hdr * ) __skb_push ( frag , sizeof ( struct frag_hdr ) ) ; __skb_push ( frag , hlen ) ; skb_reset_network_header ( frag ) ; memcpy ( skb_network_header ( frag ) , tmp_hdr , hlen ) ; offset += skb -> len - hlen - sizeof ( struct frag_hdr ) ; fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; fh -> frag_off = htons ( offset ) ; if ( frag -> next ) fh -> frag_off |= htons ( IP6_MF ) ; fh -> identification = frag_id ; ipv6_hdr ( frag ) -> payload_len = htons ( frag -> len - sizeof ( struct ipv6hdr ) ) ; ip6_copy_metadata ( frag , skb ) ; } err = output ( net , sk , skb ) ; if ( ! err ) IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGCREATES ) ; if ( err || ! frag ) break ; skb = frag ; frag = skb -> next ; skb -> next = NULL ; } kfree ( tmp_hdr ) ; if ( err == 0 ) { IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGOKS ) ; ip6_rt_put ( rt ) ; return 0 ; } kfree_skb_list ( frag ) ; IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGFAILS ) ; ip6_rt_put ( rt ) ; return err ; slow_path_clean : skb_walk_frags ( skb , frag2 ) { if ( frag2 == frag ) break ; frag2 -> sk = NULL ; frag2 -> destructor = NULL ; skb -> truesize += frag2 -> truesize ; } } slow_path : left = skb -> len - hlen ; ptr = hlen ; troom = rt -> dst . dev -> needed_tailroom ; while ( left > 0 ) { u8 * fragnexthdr_offset ; len = left ; if ( len > mtu ) len = mtu ; if ( len < left ) { len &= ~ 7 ; } frag = alloc_skb ( len + hlen + sizeof ( struct frag_hdr ) + hroom + troom , GFP_ATOMIC ) ; if ( ! frag ) { IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; err = - ENOMEM ; goto fail ; } ip6_copy_metadata ( frag , skb ) ; skb_reserve ( frag , hroom ) ; skb_put ( frag , len + hlen + sizeof ( struct frag_hdr ) ) ; skb_reset_network_header ( frag ) ; fh = ( struct frag_hdr * ) ( skb_network_header ( frag ) + hlen ) ; frag -> transport_header = ( frag -> network_header + hlen + sizeof ( struct frag_hdr ) ) ; if ( skb -> sk ) skb_set_owner_w ( frag , skb -> sk ) ; skb_copy_from_linear_data ( skb , skb_network_header ( frag ) , hlen ) ; fragnexthdr_offset = skb_network_header ( frag ) ; fragnexthdr_offset += prevhdr - skb_network_header ( skb ) ; * fragnexthdr_offset = NEXTHDR_FRAGMENT ; fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; fh -> identification = frag_id ; BUG_ON ( skb_copy_bits ( skb , ptr , skb_transport_header ( frag ) , len ) ) ; left -= len ; fh -> frag_off = htons ( offset ) ; if ( left > 0 ) fh -> frag_off |= htons ( IP6_MF ) ; ipv6_hdr ( frag ) -> payload_len = htons ( frag -> len - sizeof ( struct ipv6hdr ) ) ; ptr += len ; offset += len ; err = output ( net , sk , frag ) ; if ( err ) goto fail ; IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGCREATES ) ; } IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGOKS ) ; consume_skb ( skb ) ; return err ; fail_toobig : if ( skb -> sk && dst_allfrag ( skb_dst ( skb ) ) ) sk_nocaps_add ( skb -> sk , NETIF_F_GSO_MASK ) ; skb -> dev = skb_dst ( skb ) -> dev ; icmpv6_send ( skb , ICMPV6_PKT_TOOBIG , 0 , mtu ) ; err = - EMSGSIZE ; fail : IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; kfree_skb ( skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prevhdr ) ; if ( hlen < 0 ) { err = hlen ; goto fail ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 <S2SV_StartBug> int udf_get_filename ( struct super_block * sb , uint8_t * sname , uint8_t * dname , <S2SV_EndBug> <S2SV_StartBug> int flen ) <S2SV_EndBug> { struct ustr * filename , * unifilename ; int len = 0 ; filename = kmalloc ( sizeof ( struct ustr ) , GFP_NOFS ) ; if ( ! filename ) return 0 ; unifilename = kmalloc ( sizeof ( struct ustr ) , GFP_NOFS ) ; if ( ! unifilename ) goto out1 ; <S2SV_StartBug> if ( udf_build_ustr_exact ( unifilename , sname , flen ) ) <S2SV_EndBug> goto out2 ; if ( UDF_QUERY_FLAG ( sb , UDF_FLAG_UTF8 ) ) { if ( ! udf_CS0toUTF8 ( filename , unifilename ) ) { udf_debug ( \"Failed<S2SV_blank>in<S2SV_blank>udf_get_filename:<S2SV_blank>sname<S2SV_blank>=<S2SV_blank>%s\\\\n\" , sname ) ; goto out2 ; } } else if ( UDF_QUERY_FLAG ( sb , UDF_FLAG_NLS_MAP ) ) { if ( ! udf_CS0toNLS ( UDF_SB ( sb ) -> s_nls_map , filename , unifilename ) ) { udf_debug ( \"Failed<S2SV_blank>in<S2SV_blank>udf_get_filename:<S2SV_blank>sname<S2SV_blank>=<S2SV_blank>%s\\\\n\" , sname ) ; goto out2 ; } } else goto out2 ; <S2SV_StartBug> len = udf_translate_to_linux ( dname , filename -> u_name , filename -> u_len , <S2SV_EndBug> unifilename -> u_name , unifilename -> u_len ) ; out2 : kfree ( unifilename ) ; out1 : kfree ( filename ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * sname , int slen , <S2SV_ModStart> * dname , int dlen <S2SV_ModEnd> ) { struct <S2SV_ModStart> , sname , slen <S2SV_ModEnd> ) ) goto <S2SV_ModStart> ( dname , dlen ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9242\n\n```\nCWE-20 static int __ip6_append_data ( struct sock * sk , struct flowi6 * fl6 , struct sk_buff_head * queue , struct inet_cork * cork , struct inet6_cork * v6_cork , struct page_frag * pfrag , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int transhdrlen , unsigned int flags , struct ipcm6_cookie * ipc6 , const struct sockcm_cookie * sockc ) { struct sk_buff * skb , * skb_prev = NULL ; unsigned int maxfraglen , fragheaderlen , mtu , orig_mtu ; int exthdrlen = 0 ; int dst_exthdrlen = 0 ; int hh_len ; int copy ; int err ; int offset = 0 ; __u8 tx_flags = 0 ; u32 tskey = 0 ; struct rt6_info * rt = ( struct rt6_info * ) cork -> dst ; struct ipv6_txoptions * opt = v6_cork -> opt ; int csummode = CHECKSUM_NONE ; unsigned int maxnonfragsize , headersize ; skb = skb_peek_tail ( queue ) ; if ( ! skb ) { exthdrlen = opt ? opt -> opt_flen : 0 ; dst_exthdrlen = rt -> dst . header_len - rt -> rt6i_nfheader_len ; } mtu = cork -> fragsize ; orig_mtu = mtu ; hh_len = LL_RESERVED_SPACE ( rt -> dst . dev ) ; fragheaderlen = sizeof ( struct ipv6hdr ) + rt -> rt6i_nfheader_len + ( opt ? opt -> opt_nflen : 0 ) ; maxfraglen = ( ( mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; headersize = sizeof ( struct ipv6hdr ) + ( opt ? opt -> opt_flen + opt -> opt_nflen : 0 ) + ( dst_allfrag ( & rt -> dst ) ? sizeof ( struct frag_hdr ) : 0 ) + rt -> rt6i_nfheader_len ; if ( cork -> length + length > mtu - headersize && ipc6 -> dontfrag && ( sk -> sk_protocol == IPPROTO_UDP || sk -> sk_protocol == IPPROTO_RAW ) ) { ipv6_local_rxpmtu ( sk , fl6 , mtu - headersize + sizeof ( struct ipv6hdr ) ) ; goto emsgsize ; } if ( ip6_sk_ignore_df ( sk ) ) maxnonfragsize = sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN ; else maxnonfragsize = mtu ; if ( cork -> length + length > maxnonfragsize - headersize ) { emsgsize : ipv6_local_error ( sk , EMSGSIZE , fl6 , mtu - headersize + sizeof ( struct ipv6hdr ) ) ; return - EMSGSIZE ; } if ( transhdrlen && sk -> sk_protocol == IPPROTO_UDP && headersize == sizeof ( struct ipv6hdr ) && length <= mtu - headersize && ! ( flags & MSG_MORE ) && rt -> dst . dev -> features & ( NETIF_F_IPV6_CSUM | NETIF_F_HW_CSUM ) ) csummode = CHECKSUM_PARTIAL ; if ( sk -> sk_type == SOCK_DGRAM || sk -> sk_type == SOCK_RAW ) { sock_tx_timestamp ( sk , sockc -> tsflags , & tx_flags ) ; if ( tx_flags & SKBTX_ANY_SW_TSTAMP && sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_ID ) tskey = sk -> sk_tskey ++ ; } cork -> length += length ; if ( ( ( ( length + fragheaderlen ) > mtu ) || ( skb && skb_is_gso ( skb ) ) ) && ( sk -> sk_protocol == IPPROTO_UDP ) && ( rt -> dst . dev -> features & NETIF_F_UFO ) && ! dst_xfrm ( & rt -> dst ) && ( sk -> sk_type == SOCK_DGRAM ) && ! udp_get_no_check6_tx ( sk ) ) { err = ip6_ufo_append_data ( sk , queue , getfrag , from , length , hh_len , fragheaderlen , exthdrlen , transhdrlen , mtu , flags , fl6 ) ; if ( err ) goto error ; return 0 ; } if ( ! skb ) goto alloc_new_skb ; while ( length > 0 ) { copy = ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - skb -> len ; if ( copy < length ) copy = maxfraglen - skb -> len ; if ( copy <= 0 ) { char * data ; unsigned int datalen ; unsigned int fraglen ; unsigned int fraggap ; unsigned int alloclen ; alloc_new_skb : if ( skb ) fraggap = skb -> len - maxfraglen ; else fraggap = 0 ; if ( ! skb || ! skb_prev ) ip6_append_data_mtu ( & mtu , & maxfraglen , fragheaderlen , skb , rt , orig_mtu ) ; skb_prev = skb ; datalen = length + fraggap ; if ( datalen > ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - fragheaderlen ) datalen = maxfraglen - fragheaderlen - rt -> dst . trailer_len ; if ( ( flags & MSG_MORE ) && ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) alloclen = mtu ; else alloclen = datalen + fragheaderlen ; alloclen += dst_exthdrlen ; if ( datalen != length + fraggap ) { datalen += rt -> dst . trailer_len ; } alloclen += rt -> dst . trailer_len ; fraglen = datalen + fragheaderlen ; alloclen += sizeof ( struct frag_hdr ) ; <S2SV_StartBug> if ( transhdrlen ) { <S2SV_EndBug> skb = sock_alloc_send_skb ( sk , alloclen + hh_len , ( flags & MSG_DONTWAIT ) , & err ) ; } else { skb = NULL ; if ( atomic_read ( & sk -> sk_wmem_alloc ) <= 2 * sk -> sk_sndbuf ) skb = sock_wmalloc ( sk , alloclen + hh_len , 1 , sk -> sk_allocation ) ; if ( unlikely ( ! skb ) ) err = - ENOBUFS ; } if ( ! skb ) goto error ; skb -> protocol = htons ( ETH_P_IPV6 ) ; skb -> ip_summed = csummode ; skb -> csum = 0 ; skb_reserve ( skb , hh_len + sizeof ( struct frag_hdr ) + dst_exthdrlen ) ; skb_shinfo ( skb ) -> tx_flags = tx_flags ; tx_flags = 0 ; skb_shinfo ( skb ) -> tskey = tskey ; tskey = 0 ; data = skb_put ( skb , fraglen ) ; skb_set_network_header ( skb , exthdrlen ) ; data += fragheaderlen ; skb -> transport_header = ( skb -> network_header + fragheaderlen ) ; if ( fraggap ) { skb -> csum = skb_copy_and_csum_bits ( skb_prev , maxfraglen , data + transhdrlen , fraggap , 0 ) ; skb_prev -> csum = csum_sub ( skb_prev -> csum , skb -> csum ) ; data += fraggap ; pskb_trim_unique ( skb_prev , maxfraglen ) ; } <S2SV_StartBug> copy = datalen - transhdrlen - fraggap ; <S2SV_EndBug> if ( copy < 0 ) { err = - EINVAL ; kfree_skb ( skb ) ; goto error ; } else if ( copy > 0 && getfrag ( from , data + transhdrlen , offset , copy , fraggap , skb ) < 0 ) { err = - EFAULT ; kfree_skb ( skb ) ; goto error ; } offset += copy ; length -= datalen - fraggap ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; if ( ( flags & MSG_CONFIRM ) && ! skb_prev ) skb_set_dst_pending_confirm ( skb , 1 ) ; __skb_queue_tail ( queue , skb ) ; continue ; } if ( copy > length ) copy = length ; if ( ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) { unsigned int off ; off = skb -> len ; if ( getfrag ( from , skb_put ( skb , copy ) , offset , copy , off , skb ) < 0 ) { __skb_trim ( skb , off ) ; err = - EFAULT ; goto error ; } } else { int i = skb_shinfo ( skb ) -> nr_frags ; err = - ENOMEM ; if ( ! sk_page_frag_refill ( sk , pfrag ) ) goto error ; if ( ! skb_can_coalesce ( skb , i , pfrag -> page , pfrag -> offset ) ) { err = - EMSGSIZE ; if ( i == MAX_SKB_FRAGS ) goto error ; __skb_fill_page_desc ( skb , i , pfrag -> page , pfrag -> offset , 0 ) ; skb_shinfo ( skb ) -> nr_frags = ++ i ; get_page ( pfrag -> page ) ; } copy = min_t ( int , copy , pfrag -> size - pfrag -> offset ) ; if ( getfrag ( from , page_address ( pfrag -> page ) + pfrag -> offset , offset , copy , skb -> len , skb ) < 0 ) goto error_efault ; pfrag -> offset += copy ; skb_frag_size_add ( & skb_shinfo ( skb ) -> frags [ i - 1 ] , copy ) ; skb -> len += copy ; skb -> data_len += copy ; skb -> truesize += copy ; atomic_add ( copy , & sk -> sk_wmem_alloc ) ; } offset += copy ; length -= copy ; } return 0 ; error_efault : err = - EFAULT ; error : cork -> length -= length ; IP6_INC_STATS ( sock_net ( sk ) , rt -> rt6i_idev , IPSTATS_MIB_OUTDISCARDS ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> frag_hdr ) ; copy = datalen - transhdrlen - fraggap ; if ( copy < 0 ) { err = - EINVAL ; goto error ; } <S2SV_ModStart> ) ; } if ( copy > 0 && getfrag ( from , data + transhdrlen <S2SV_ModEnd> , offset ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0131\n\n```\nCWE-416 struct sk_buff * skb_segment ( struct sk_buff * head_skb , netdev_features_t features ) { struct sk_buff * segs = NULL ; struct sk_buff * tail = NULL ; struct sk_buff * list_skb = skb_shinfo ( head_skb ) -> frag_list ; skb_frag_t * frag = skb_shinfo ( head_skb ) -> frags ; unsigned int mss = skb_shinfo ( head_skb ) -> gso_size ; <S2SV_StartBug> unsigned int doffset = head_skb -> data - skb_mac_header ( head_skb ) ; <S2SV_EndBug> unsigned int offset = doffset ; unsigned int tnl_hlen = skb_tnl_header_len ( head_skb ) ; unsigned int headroom ; unsigned int len ; __be16 proto ; bool csum ; int sg = ! ! ( features & NETIF_F_SG ) ; int nfrags = skb_shinfo ( head_skb ) -> nr_frags ; int err = - ENOMEM ; int i = 0 ; int pos ; proto = skb_network_protocol ( head_skb ) ; if ( unlikely ( ! proto ) ) return ERR_PTR ( - EINVAL ) ; csum = ! ! can_checksum_protocol ( features , proto ) ; __skb_push ( head_skb , doffset ) ; headroom = skb_headroom ( head_skb ) ; pos = skb_headlen ( head_skb ) ; do { struct sk_buff * nskb ; skb_frag_t * nskb_frag ; int hsize ; int size ; len = head_skb -> len - offset ; if ( len > mss ) len = mss ; hsize = skb_headlen ( head_skb ) - offset ; if ( hsize < 0 ) hsize = 0 ; if ( hsize > len || ! sg ) hsize = len ; if ( ! hsize && i >= nfrags && skb_headlen ( list_skb ) && ( skb_headlen ( list_skb ) == len || sg ) ) { BUG_ON ( skb_headlen ( list_skb ) > len ) ; i = 0 ; nfrags = skb_shinfo ( list_skb ) -> nr_frags ; frag = skb_shinfo ( list_skb ) -> frags ; <S2SV_StartBug> pos += skb_headlen ( list_skb ) ; <S2SV_EndBug> while ( pos < offset + len ) { BUG_ON ( i >= nfrags ) ; size = skb_frag_size ( frag ) ; if ( pos + size > offset + len ) break ; i ++ ; pos += size ; frag ++ ; } nskb = skb_clone ( list_skb , GFP_ATOMIC ) ; list_skb = list_skb -> next ; if ( unlikely ( ! nskb ) ) goto err ; if ( unlikely ( pskb_trim ( nskb , len ) ) ) { kfree_skb ( nskb ) ; goto err ; } hsize = skb_end_offset ( nskb ) ; if ( skb_cow_head ( nskb , doffset + headroom ) ) { kfree_skb ( nskb ) ; goto err ; } nskb -> truesize += skb_end_offset ( nskb ) - hsize ; skb_release_head_state ( nskb ) ; __skb_push ( nskb , doffset ) ; } else { nskb = __alloc_skb ( hsize + doffset + headroom , GFP_ATOMIC , skb_alloc_rx_flag ( head_skb ) , NUMA_NO_NODE ) ; if ( unlikely ( ! nskb ) ) goto err ; skb_reserve ( nskb , headroom ) ; __skb_put ( nskb , doffset ) ; } if ( segs ) tail -> next = nskb ; else segs = nskb ; tail = nskb ; __copy_skb_header ( nskb , head_skb ) ; nskb -> mac_len = head_skb -> mac_len ; skb_headers_offset_update ( nskb , skb_headroom ( nskb ) - headroom ) ; skb_copy_from_linear_data_offset ( head_skb , - tnl_hlen , nskb -> data - tnl_hlen , doffset + tnl_hlen ) ; if ( nskb -> len == len + doffset ) goto perform_csum_check ; if ( ! sg ) { nskb -> ip_summed = CHECKSUM_NONE ; nskb -> csum = skb_copy_and_csum_bits ( head_skb , offset , skb_put ( nskb , len ) , len , 0 ) ; continue ; } nskb_frag = skb_shinfo ( nskb ) -> frags ; skb_copy_from_linear_data_offset ( head_skb , offset , skb_put ( nskb , hsize ) , hsize ) ; skb_shinfo ( nskb ) -> tx_flags = skb_shinfo ( head_skb ) -> tx_flags & SKBTX_SHARED_FRAG ; while ( pos < offset + len ) { if ( i >= nfrags ) { BUG_ON ( skb_headlen ( list_skb ) ) ; i = 0 ; nfrags = skb_shinfo ( list_skb ) -> nr_frags ; frag = skb_shinfo ( list_skb ) -> frags ; <S2SV_StartBug> BUG_ON ( ! nfrags ) ; <S2SV_EndBug> list_skb = list_skb -> next ; } if ( unlikely ( skb_shinfo ( nskb ) -> nr_frags >= MAX_SKB_FRAGS ) ) { net_warn_ratelimited ( \"skb_segment:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>frags:<S2SV_blank>%u<S2SV_blank>%u\\\\n\" , pos , mss ) ; goto err ; } <S2SV_StartBug> * nskb_frag = * frag ; <S2SV_EndBug> __skb_frag_ref ( nskb_frag ) ; size = skb_frag_size ( nskb_frag ) ; if ( pos < offset ) { nskb_frag -> page_offset += offset - pos ; skb_frag_size_sub ( nskb_frag , offset - pos ) ; } skb_shinfo ( nskb ) -> nr_frags ++ ; if ( pos + size <= offset + len ) { i ++ ; frag ++ ; pos += size ; } else { skb_frag_size_sub ( nskb_frag , pos + size - ( offset + len ) ) ; goto skip_fraglist ; } nskb_frag ++ ; } skip_fraglist : nskb -> data_len = len - hsize ; nskb -> len += nskb -> data_len ; nskb -> truesize += nskb -> data_len ; perform_csum_check : if ( ! csum ) { nskb -> csum = skb_checksum ( nskb , doffset , nskb -> len - doffset , 0 ) ; nskb -> ip_summed = CHECKSUM_NONE ; } } while ( ( offset += len ) < head_skb -> len ) ; return segs ; err : kfree_skb_list ( segs ) ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( head_skb ) ; struct sk_buff * frag_skb = head_skb <S2SV_ModStart> -> frags ; frag_skb = list_skb ; <S2SV_ModStart> -> frags ; frag_skb = list_skb ; <S2SV_ModStart> err ; } if ( unlikely ( skb_orphan_frags ( frag_skb , GFP_ATOMIC ) ) ) goto err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3430\n\n```\nCWE-200 int rds_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int msg_flags ) { struct sock * sk = sock -> sk ; struct rds_sock * rs = rds_sk_to_rs ( sk ) ; long timeo ; int ret = 0 , nonblock = msg_flags & MSG_DONTWAIT ; struct sockaddr_in * sin ; struct rds_incoming * inc = NULL ; timeo = sock_rcvtimeo ( sk , nonblock ) ; <S2SV_StartBug> rdsdebug ( \"size<S2SV_blank>%zu<S2SV_blank>flags<S2SV_blank>0x%x<S2SV_blank>timeo<S2SV_blank>%ld\\\\n\" , size , msg_flags , timeo ) ; <S2SV_EndBug> if ( msg_flags & MSG_OOB ) goto out ; while ( 1 ) { if ( ! list_empty ( & rs -> rs_notify_queue ) ) { ret = rds_notify_queue_get ( rs , msg ) ; break ; } if ( rs -> rs_cong_notify ) { ret = rds_notify_cong ( rs , msg ) ; break ; } if ( ! rds_next_incoming ( rs , & inc ) ) { if ( nonblock ) { ret = - EAGAIN ; break ; } timeo = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , ( ! list_empty ( & rs -> rs_notify_queue ) || rs -> rs_cong_notify || rds_next_incoming ( rs , & inc ) ) , timeo ) ; rdsdebug ( \"recvmsg<S2SV_blank>woke<S2SV_blank>inc<S2SV_blank>%p<S2SV_blank>timeo<S2SV_blank>%ld\\\\n\" , inc , timeo ) ; if ( timeo > 0 || timeo == MAX_SCHEDULE_TIMEOUT ) continue ; ret = timeo ; if ( ret == 0 ) ret = - ETIMEDOUT ; break ; } rdsdebug ( \"copying<S2SV_blank>inc<S2SV_blank>%p<S2SV_blank>from<S2SV_blank>%pI4:%u<S2SV_blank>to<S2SV_blank>user\\\\n\" , inc , & inc -> i_conn -> c_faddr , ntohs ( inc -> i_hdr . h_sport ) ) ; ret = inc -> i_conn -> c_trans -> inc_copy_to_user ( inc , msg -> msg_iov , size ) ; if ( ret < 0 ) break ; if ( ! rds_still_queued ( rs , inc , ! ( msg_flags & MSG_PEEK ) ) ) { rds_inc_put ( inc ) ; inc = NULL ; rds_stats_inc ( s_recv_deliver_raced ) ; continue ; } if ( ret < be32_to_cpu ( inc -> i_hdr . h_len ) ) { if ( msg_flags & MSG_TRUNC ) ret = be32_to_cpu ( inc -> i_hdr . h_len ) ; msg -> msg_flags |= MSG_TRUNC ; } if ( rds_cmsg_recv ( inc , msg ) ) { ret = - EFAULT ; goto out ; } rds_stats_inc ( s_recv_delivered ) ; sin = ( struct sockaddr_in * ) msg -> msg_name ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_port = inc -> i_hdr . h_sport ; sin -> sin_addr . s_addr = inc -> i_saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; <S2SV_StartBug> } <S2SV_EndBug> break ; } if ( inc ) rds_inc_put ( inc ) ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , timeo ) ; msg -> msg_namelen = 0 <S2SV_ModStart> ) ) ; msg -> msg_namelen = sizeof ( * sin ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 SQLWCHAR * _single_string_alloc_and_expand ( LPCSTR in ) { SQLWCHAR * chr ; int len = 0 ; if ( ! in ) { <S2SV_StartBug> return in ; <S2SV_EndBug> } while ( in [ len ] != 0 ) { len ++ ; } chr = malloc ( sizeof ( SQLWCHAR ) * ( len + 1 ) ) ; len = 0 ; while ( in [ len ] != 0 ) { chr [ len ] = in [ len ] ; len ++ ; } chr [ len ++ ] = 0 ; return chr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return NULL <S2SV_ModEnd> ; } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 struct mnt_namespace * copy_mnt_ns ( unsigned long flags , struct mnt_namespace * ns , struct user_namespace * user_ns , struct fs_struct * new_fs ) { struct mnt_namespace * new_ns ; struct vfsmount * rootmnt = NULL , * pwdmnt = NULL ; struct mount * p , * q ; struct mount * old ; struct mount * new ; int copy_flags ; BUG_ON ( ! ns ) ; if ( likely ( ! ( flags & CLONE_NEWNS ) ) ) { get_mnt_ns ( ns ) ; return ns ; } old = ns -> root ; new_ns = alloc_mnt_ns ( user_ns ) ; if ( IS_ERR ( new_ns ) ) return new_ns ; namespace_lock ( ) ; copy_flags = CL_COPY_UNBINDABLE | CL_EXPIRE ; if ( user_ns != ns -> user_ns ) copy_flags |= CL_SHARED_TO_SLAVE | CL_UNPRIVILEGED ; new = copy_tree ( old , old -> mnt . mnt_root , copy_flags ) ; if ( IS_ERR ( new ) ) { namespace_unlock ( ) ; free_mnt_ns ( new_ns ) ; return ERR_CAST ( new ) ; } new_ns -> root = new ; list_add_tail ( & new_ns -> list , & new -> mnt_list ) ; p = old ; q = new ; while ( p ) { q -> mnt_ns = new_ns ; <S2SV_StartBug> if ( new_fs ) { <S2SV_EndBug> if ( & p -> mnt == new_fs -> root . mnt ) { new_fs -> root . mnt = mntget ( & q -> mnt ) ; rootmnt = & p -> mnt ; } if ( & p -> mnt == new_fs -> pwd . mnt ) { new_fs -> pwd . mnt = mntget ( & q -> mnt ) ; pwdmnt = & p -> mnt ; } } p = next_mnt ( p , old ) ; q = next_mnt ( q , new ) ; if ( ! q ) break ; while ( p -> mnt . mnt_root != q -> mnt . mnt_root ) p = next_mnt ( p , old ) ; } namespace_unlock ( ) ; if ( rootmnt ) mntput ( rootmnt ) ; if ( pwdmnt ) mntput ( pwdmnt ) ; return new_ns ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = new_ns ; new_ns -> mounts ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8877\n\n```\nCWE-399 static gdImagePtr gdImageScaleTwoPass ( const gdImagePtr src , const unsigned int new_width , const unsigned int new_height ) { const unsigned int src_width = src -> sx ; const unsigned int src_height = src -> sy ; gdImagePtr tmp_im = NULL ; gdImagePtr dst = NULL ; if ( src_width == new_width && src_height == new_height ) { return gdImageClone ( src ) ; } if ( ! src -> trueColor ) { gdImagePaletteToTrueColor ( src ) ; } if ( src_width == new_width ) { tmp_im = src ; } else { tmp_im = gdImageCreateTrueColor ( new_width , src_height ) ; if ( tmp_im == NULL ) { return NULL ; } gdImageSetInterpolationMethod ( tmp_im , src -> interpolation_id ) ; _gdScalePass ( src , src_width , tmp_im , new_width , src_height , HORIZONTAL ) ; } if ( src_height == new_height ) { assert ( tmp_im != src ) ; return tmp_im ; } dst = gdImageCreateTrueColor ( new_width , new_height ) ; if ( dst != NULL ) { gdImageSetInterpolationMethod ( dst , src -> interpolation_id ) ; _gdScalePass ( tmp_im , src_height , dst , new_height , new_width , VERTICAL ) ; } if ( src != tmp_im ) { <S2SV_StartBug> gdFree ( tmp_im ) ; <S2SV_EndBug> } return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp_im ) { gdImageDestroy <S2SV_ModEnd> ( tmp_im )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int dgram_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { size_t copied = 0 ; int err = - EOPNOTSUPP ; struct sk_buff * skb ; struct sockaddr_ieee802154 * saddr ; saddr = ( struct sockaddr_ieee802154 * ) msg -> msg_name ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( saddr ) { saddr -> family = AF_IEEE802154 ; saddr -> addr = mac_cb ( skb ) -> sa ; <S2SV_StartBug> } <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( * saddr ) ; if ( flags & MSG_TRUNC ) copied = skb -> len ; done : skb_free_datagram ( sk , skb ) ; out : if ( err ) return err ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sa ; * addr_len = sizeof ( * saddr ) ; } <S2SV_ModEnd> if ( flags\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 chrand_ret * chrand_principal_2_svc ( chrand_arg * arg , struct svc_req * rqstp ) { static chrand_ret ret ; krb5_keyblock * k ; int nkeys ; char * prime_arg , * funcname ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_chrand_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; funcname = \"kadm5_randkey_principal\" ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( cmp_gss_krb5_name ( handle , rqst2name ( rqstp ) , arg -> princ ) ) { ret . code = randkey_principal_wrapper_3 ( ( void * ) handle , arg -> princ , FALSE , 0 , NULL , & k , & nkeys ) ; } else if ( ! ( CHANGEPW_SERVICE ( rqstp ) ) && kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_CHANGEPW , arg -> princ , NULL ) ) { ret . code = kadm5_randkey_principal ( ( void * ) handle , arg -> princ , & k , & nkeys ) ; } else { log_unauth ( funcname , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_CHANGEPW ; } if ( ret . code == KADM5_OK ) { ret . keys = k ; ret . n_keys = nkeys ; } if ( ret . code != KADM5_AUTH_CHANGEPW ) { if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( funcname , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13040\n\n```\nCWE-125 static int mp_join_print ( netdissect_options * ndo , const u_char * opt , u_int opt_len , u_char flags ) { const struct mp_join * mpj = ( const struct mp_join * ) opt ; <S2SV_StartBug> if ( ! ( opt_len == 12 && flags & TH_SYN ) && <S2SV_EndBug> ! ( opt_len == 16 && ( flags & ( TH_SYN | TH_ACK ) ) == ( TH_SYN | TH_ACK ) ) && <S2SV_StartBug> ! ( opt_len == 24 && flags & TH_ACK ) ) <S2SV_EndBug> return 0 ; if ( opt_len != 24 ) { if ( mpj -> sub_b & MP_JOIN_B ) ND_PRINT ( ( ndo , \"<S2SV_blank>backup\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>id<S2SV_blank>%u\" , mpj -> addr_id ) ) ; } switch ( opt_len ) { case 12 : ND_PRINT ( ( ndo , \"<S2SV_blank>token<S2SV_blank>0x%x\" \"<S2SV_blank>nonce<S2SV_blank>0x%x\" , EXTRACT_32BITS ( mpj -> u . syn . token ) , EXTRACT_32BITS ( mpj -> u . syn . nonce ) ) ) ; break ; case 16 : ND_PRINT ( ( ndo , \"<S2SV_blank>hmac<S2SV_blank>0x%\" PRIx64 \"<S2SV_blank>nonce<S2SV_blank>0x%x\" , EXTRACT_64BITS ( mpj -> u . synack . mac ) , EXTRACT_32BITS ( mpj -> u . synack . nonce ) ) ) ; break ; case 24 : { size_t i ; ND_PRINT ( ( ndo , \"<S2SV_blank>hmac<S2SV_blank>0x\" ) ) ; for ( i = 0 ; i < sizeof ( mpj -> u . ack . mac ) ; ++ i ) ND_PRINT ( ( ndo , \"%02x\" , mpj -> u . ack . mac [ i ] ) ) ; } default : break ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 12 && ( <S2SV_ModStart> & TH_SYN ) ) <S2SV_ModStart> == 24 && ( <S2SV_ModStart> flags & TH_ACK )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-444(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11724\n\n```\nCWE-444 static ngx_int_t ngx_http_lua_adjust_subrequest ( ngx_http_request_t * sr , ngx_uint_t method , int always_forward_body , ngx_http_request_body_t * body , unsigned vars_action , ngx_array_t * extra_vars ) { ngx_http_request_t * r ; <S2SV_StartBug> ngx_int_t rc ; <S2SV_EndBug> ngx_http_core_main_conf_t * cmcf ; <S2SV_StartBug> size_t size ; <S2SV_EndBug> r = sr -> parent ; sr -> header_in = r -> header_in ; if ( body ) { sr -> request_body = body ; <S2SV_StartBug> rc = ngx_http_lua_set_content_length_header ( sr , <S2SV_EndBug> body -> buf ? ngx_buf_size ( body -> buf ) : 0 ) ; if ( rc != NGX_OK ) { return NGX_ERROR ; } } else if ( ! always_forward_body && method != NGX_HTTP_PUT && method != NGX_HTTP_POST && r -> headers_in . content_length_n > 0 ) { <S2SV_StartBug> rc = ngx_http_lua_set_content_length_header ( sr , 0 ) ; <S2SV_EndBug> if ( rc != NGX_OK ) { return NGX_ERROR ; } <S2SV_StartBug> # if 1 <S2SV_EndBug> sr -> request_body = NULL ; # endif } else { <S2SV_StartBug> if ( ngx_http_lua_copy_request_headers ( sr , r ) != NGX_OK ) { <S2SV_EndBug> return NGX_ERROR ; <S2SV_StartBug> } <S2SV_EndBug> if ( sr -> request_body ) { if ( sr -> request_body -> temp_file ) { if ( ngx_http_lua_copy_in_file_request_body ( sr ) != NGX_OK ) { return NGX_ERROR ; } } } } sr -> method = method ; switch ( method ) { case NGX_HTTP_GET : sr -> method_name = ngx_http_lua_get_method ; break ; case NGX_HTTP_POST : sr -> method_name = ngx_http_lua_post_method ; break ; case NGX_HTTP_PUT : sr -> method_name = ngx_http_lua_put_method ; break ; case NGX_HTTP_HEAD : sr -> method_name = ngx_http_lua_head_method ; break ; case NGX_HTTP_DELETE : sr -> method_name = ngx_http_lua_delete_method ; break ; case NGX_HTTP_OPTIONS : sr -> method_name = ngx_http_lua_options_method ; break ; case NGX_HTTP_MKCOL : sr -> method_name = ngx_http_lua_mkcol_method ; break ; case NGX_HTTP_COPY : sr -> method_name = ngx_http_lua_copy_method ; break ; case NGX_HTTP_MOVE : sr -> method_name = ngx_http_lua_move_method ; break ; case NGX_HTTP_PROPFIND : sr -> method_name = ngx_http_lua_propfind_method ; break ; case NGX_HTTP_PROPPATCH : sr -> method_name = ngx_http_lua_proppatch_method ; break ; case NGX_HTTP_LOCK : sr -> method_name = ngx_http_lua_lock_method ; break ; case NGX_HTTP_UNLOCK : sr -> method_name = ngx_http_lua_unlock_method ; break ; case NGX_HTTP_PATCH : sr -> method_name = ngx_http_lua_patch_method ; break ; case NGX_HTTP_TRACE : sr -> method_name = ngx_http_lua_trace_method ; break ; default : ngx_log_error ( NGX_LOG_ERR , r -> connection -> log , 0 , \"unsupported<S2SV_blank>HTTP<S2SV_blank>method:<S2SV_blank>%u\" , ( unsigned ) method ) ; return NGX_ERROR ; } if ( ! ( vars_action & NGX_HTTP_LUA_SHARE_ALL_VARS ) ) { cmcf = ngx_http_get_module_main_conf ( sr , ngx_http_core_module ) ; size = cmcf -> variables . nelts * sizeof ( ngx_http_variable_value_t ) ; if ( vars_action & NGX_HTTP_LUA_COPY_ALL_VARS ) { sr -> variables = ngx_palloc ( sr -> pool , size ) ; if ( sr -> variables == NULL ) { return NGX_ERROR ; } ngx_memcpy ( sr -> variables , r -> variables , size ) ; } else { sr -> variables = ngx_pcalloc ( sr -> pool , size ) ; if ( sr -> variables == NULL ) { return NGX_ERROR ; } } } return ngx_http_lua_subrequest_add_extra_vars ( sr , extra_vars ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * r ; <S2SV_ModEnd> ngx_http_core_main_conf_t * cmcf <S2SV_ModStart> * cmcf ; int pr_not_chunked = 0 ; <S2SV_ModStart> = body ; <S2SV_ModEnd> } else if <S2SV_ModStart> 0 ) { sr -> request_body = NULL ; } else { if ( ! r -> headers_in . chunked ) { pr_not_chunked = 1 ; } if ( sr -> request_body && sr -> request_body -> temp_file ) { if ( ngx_http_lua_copy_in_file_request_body ( sr ) <S2SV_ModEnd> != NGX_OK ) <S2SV_ModStart> NGX_ERROR ; } } } <S2SV_ModEnd> if ( ngx_http_lua_copy_request_headers <S2SV_ModStart> sr , r , pr_not_chunked <S2SV_ModStart> return NGX_ERROR ; <S2SV_ModEnd> } sr ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadFITSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct _FITSInfo { MagickBooleanType extend , simple ; int bits_per_pixel , columns , rows , number_axes , number_planes ; double min_data , max_data , zero , scale ; EndianType endian ; } FITSInfo ; char * comment , keyword [ 9 ] , property [ MaxTextExtent ] , value [ 73 ] ; double pixel , scale ; FITSInfo fits_info ; Image * image ; int c ; MagickBooleanType status ; MagickSizeType number_pixels ; register ssize_t i , x ; register PixelPacket * q ; ssize_t count , scene , y ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & fits_info , 0 , sizeof ( fits_info ) ) ; fits_info . extend = MagickFalse ; fits_info . simple = MagickFalse ; fits_info . bits_per_pixel = 8 ; fits_info . columns = 1 ; fits_info . rows = 1 ; fits_info . rows = 1 ; fits_info . number_planes = 1 ; fits_info . min_data = 0.0 ; fits_info . max_data = 0.0 ; fits_info . zero = 0.0 ; fits_info . scale = 1.0 ; fits_info . endian = MSBEndian ; for ( comment = ( char * ) NULL ; EOFBlob ( image ) == MagickFalse ; ) { for ( ; EOFBlob ( image ) == MagickFalse ; ) { register char * p ; count = ReadBlob ( image , 8 , ( unsigned char * ) keyword ) ; if ( count != 8 ) break ; for ( i = 0 ; i < 8 ; i ++ ) { if ( isspace ( ( int ) ( ( unsigned char ) keyword [ i ] ) ) != 0 ) break ; keyword [ i ] = tolower ( ( int ) ( ( unsigned char ) keyword [ i ] ) ) ; } keyword [ i ] = '\\\\0' ; count = ReadBlob ( image , 72 , ( unsigned char * ) value ) ; value [ 72 ] = '\\\\0' ; if ( count != 72 ) break ; p = value ; if ( * p == '=' ) { p += 2 ; while ( isspace ( ( int ) ( ( unsigned char ) * p ) ) != 0 ) p ++ ; } if ( LocaleCompare ( keyword , \"end\" ) == 0 ) break ; if ( LocaleCompare ( keyword , \"extend\" ) == 0 ) fits_info . extend = ( * p == 'T' ) || ( * p == 't' ) ? MagickTrue : MagickFalse ; if ( LocaleCompare ( keyword , \"simple\" ) == 0 ) fits_info . simple = ( * p == 'T' ) || ( * p == 't' ) ? MagickTrue : MagickFalse ; if ( LocaleCompare ( keyword , \"bitpix\" ) == 0 ) fits_info . bits_per_pixel = StringToLong ( p ) ; if ( LocaleCompare ( keyword , \"naxis\" ) == 0 ) fits_info . number_axes = StringToLong ( p ) ; if ( LocaleCompare ( keyword , \"naxis1\" ) == 0 ) fits_info . columns = StringToLong ( p ) ; if ( LocaleCompare ( keyword , \"naxis2\" ) == 0 ) fits_info . rows = StringToLong ( p ) ; if ( LocaleCompare ( keyword , \"naxis3\" ) == 0 ) fits_info . number_planes = StringToLong ( p ) ; if ( LocaleCompare ( keyword , \"datamax\" ) == 0 ) fits_info . max_data = StringToDouble ( p , ( char * * ) NULL ) ; if ( LocaleCompare ( keyword , \"datamin\" ) == 0 ) fits_info . min_data = StringToDouble ( p , ( char * * ) NULL ) ; if ( LocaleCompare ( keyword , \"bzero\" ) == 0 ) fits_info . zero = StringToDouble ( p , ( char * * ) NULL ) ; if ( LocaleCompare ( keyword , \"bscale\" ) == 0 ) fits_info . scale = StringToDouble ( p , ( char * * ) NULL ) ; if ( LocaleCompare ( keyword , \"comment\" ) == 0 ) { if ( comment == ( char * ) NULL ) comment = ConstantString ( p ) ; else ( void ) ConcatenateString ( & comment , p ) ; } if ( LocaleCompare ( keyword , \"xendian\" ) == 0 ) { if ( LocaleNCompare ( p , \"big\" , 3 ) == 0 ) fits_info . endian = MSBEndian ; else fits_info . endian = LSBEndian ; } ( void ) FormatLocaleString ( property , MaxTextExtent , \"fits:%s\" , keyword ) ; ( void ) SetImageProperty ( image , property , p ) ; } c = 0 ; while ( ( ( TellBlob ( image ) % FITSBlocksize ) != 0 ) && ( c != EOF ) ) c = ReadBlobByte ( image ) ; if ( fits_info . extend == MagickFalse ) break ; number_pixels = ( MagickSizeType ) fits_info . columns * fits_info . rows ; if ( ( fits_info . simple != MagickFalse ) && ( fits_info . number_axes >= 1 ) && ( fits_info . number_axes <= 4 ) && ( number_pixels != 0 ) ) break ; } if ( comment != ( char * ) NULL ) { ( void ) SetImageProperty ( image , \"comment\" , comment ) ; comment = DestroyString ( comment ) ; } if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; number_pixels = ( MagickSizeType ) fits_info . columns * fits_info . rows ; if ( ( fits_info . simple == MagickFalse ) || ( fits_info . number_axes < 1 ) || ( fits_info . number_axes > 4 ) || ( number_pixels == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; for ( scene = 0 ; scene < ( ssize_t ) fits_info . number_planes ; scene ++ ) { image -> columns = ( size_t ) fits_info . columns ; image -> rows = ( size_t ) fits_info . rows ; image -> depth = ( size_t ) ( fits_info . bits_per_pixel < 0 ? - 1 : 1 ) * fits_info . bits_per_pixel ; image -> endian = fits_info . endian ; image -> scene = ( size_t ) scene ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; <S2SV_StartBug> ( void ) SetImageColorspace ( image , GRAYColorspace ) ; <S2SV_EndBug> if ( ( fits_info . min_data == 0.0 ) && ( fits_info . max_data == 0.0 ) ) { if ( fits_info . zero == 0.0 ) ( void ) GetFITSPixelExtrema ( image , fits_info . bits_per_pixel , & fits_info . min_data , & fits_info . max_data ) ; else fits_info . max_data = GetFITSPixelRange ( ( size_t ) fits_info . bits_per_pixel ) ; } else fits_info . max_data = GetFITSPixelRange ( ( size_t ) fits_info . bits_per_pixel ) ; scale = QuantumRange / ( fits_info . max_data - fits_info . min_data ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = GetFITSPixel ( image , fits_info . bits_per_pixel ) ; if ( ( image -> depth == 16 ) || ( image -> depth == 32 ) || ( image -> depth == 64 ) ) SetFITSUnsignedPixels ( 1 , image -> depth , image -> endian , ( unsigned char * ) & pixel ) ; SetPixelRed ( q , ClampToQuantum ( scale * ( fits_info . scale * ( pixel - fits_info . min_data ) + fits_info . zero ) ) ) ; SetPixelGreen ( q , GetPixelRed ( q ) ) ; SetPixelBlue ( q , GetPixelRed ( q ) ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( fits_info . number_planes - 1 ) ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14106\n\n```\nCWE-369 int tcp_disconnect ( struct sock * sk , int flags ) { struct inet_sock * inet = inet_sk ( sk ) ; struct inet_connection_sock * icsk = inet_csk ( sk ) ; struct tcp_sock * tp = tcp_sk ( sk ) ; int err = 0 ; int old_state = sk -> sk_state ; if ( old_state != TCP_CLOSE ) tcp_set_state ( sk , TCP_CLOSE ) ; if ( old_state == TCP_LISTEN ) { inet_csk_listen_stop ( sk ) ; } else if ( unlikely ( tp -> repair ) ) { sk -> sk_err = ECONNABORTED ; } else if ( tcp_need_reset ( old_state ) || ( tp -> snd_nxt != tp -> write_seq && ( 1 << old_state ) & ( TCPF_CLOSING | TCPF_LAST_ACK ) ) ) { tcp_send_active_reset ( sk , gfp_any ( ) ) ; sk -> sk_err = ECONNRESET ; } else if ( old_state == TCP_SYN_SENT ) sk -> sk_err = ECONNRESET ; tcp_clear_xmit_timers ( sk ) ; __skb_queue_purge ( & sk -> sk_receive_queue ) ; tcp_write_queue_purge ( sk ) ; tcp_fastopen_active_disable_ofo_check ( sk ) ; skb_rbtree_purge ( & tp -> out_of_order_queue ) ; inet -> inet_dport = 0 ; if ( ! ( sk -> sk_userlocks & SOCK_BINDADDR_LOCK ) ) inet_reset_saddr ( sk ) ; sk -> sk_shutdown = 0 ; sock_reset_flag ( sk , SOCK_DONE ) ; tp -> srtt_us = 0 ; tp -> write_seq += tp -> max_window + 2 ; if ( tp -> write_seq == 0 ) tp -> write_seq = 1 ; icsk -> icsk_backoff = 0 ; tp -> snd_cwnd = 2 ; icsk -> icsk_probes_out = 0 ; tp -> packets_out = 0 ; tp -> snd_ssthresh = TCP_INFINITE_SSTHRESH ; tp -> snd_cwnd_cnt = 0 ; tp -> window_clamp = 0 ; tcp_set_ca_state ( sk , TCP_CA_Open ) ; tcp_clear_retrans ( tp ) ; inet_csk_delack_init ( sk ) ; <S2SV_StartBug> tcp_init_send_head ( sk ) ; <S2SV_EndBug> memset ( & tp -> rx_opt , 0 , sizeof ( tp -> rx_opt ) ) ; __sk_dst_reset ( sk ) ; tcp_saved_syn_free ( tp ) ; tcp_free_fastopen_req ( tp ) ; inet -> defer_connect = 0 ; WARN_ON ( inet -> inet_num && ! icsk -> icsk_bind_hash ) ; sk -> sk_error_report ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk ) ; icsk -> icsk_ack . rcv_mss = TCP_MIN_MSS ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11378\n\n```\nCWE-119 int wasm_dis ( WasmOp * op , const unsigned char * buf , int buf_len ) { op -> len = 1 ; op -> op = buf [ 0 ] ; if ( op -> op > 0xbf ) { return 1 ; } WasmOpDef * opdef = & opcodes [ op -> op ] ; switch ( op -> op ) { case WASM_OP_TRAP : case WASM_OP_NOP : case WASM_OP_ELSE : case WASM_OP_RETURN : case WASM_OP_DROP : case WASM_OP_SELECT : case WASM_OP_I32EQZ : case WASM_OP_I32EQ : case WASM_OP_I32NE : case WASM_OP_I32LTS : case WASM_OP_I32LTU : case WASM_OP_I32GTS : case WASM_OP_I32GTU : case WASM_OP_I32LES : case WASM_OP_I32LEU : case WASM_OP_I32GES : case WASM_OP_I32GEU : case WASM_OP_I64EQZ : case WASM_OP_I64EQ : case WASM_OP_I64NE : case WASM_OP_I64LTS : case WASM_OP_I64LTU : case WASM_OP_I64GTS : case WASM_OP_I64GTU : case WASM_OP_I64LES : case WASM_OP_I64LEU : case WASM_OP_I64GES : case WASM_OP_I64GEU : case WASM_OP_F32EQ : case WASM_OP_F32NE : case WASM_OP_F32LT : case WASM_OP_F32GT : case WASM_OP_F32LE : case WASM_OP_F32GE : case WASM_OP_F64EQ : case WASM_OP_F64NE : case WASM_OP_F64LT : case WASM_OP_F64GT : case WASM_OP_F64LE : case WASM_OP_F64GE : case WASM_OP_I32CLZ : case WASM_OP_I32CTZ : case WASM_OP_I32POPCNT : case WASM_OP_I32ADD : case WASM_OP_I32SUB : case WASM_OP_I32MUL : case WASM_OP_I32DIVS : case WASM_OP_I32DIVU : case WASM_OP_I32REMS : case WASM_OP_I32REMU : case WASM_OP_I32AND : case WASM_OP_I32OR : case WASM_OP_I32XOR : case WASM_OP_I32SHL : case WASM_OP_I32SHRS : case WASM_OP_I32SHRU : case WASM_OP_I32ROTL : case WASM_OP_I32ROTR : case WASM_OP_I64CLZ : case WASM_OP_I64CTZ : case WASM_OP_I64POPCNT : case WASM_OP_I64ADD : case WASM_OP_I64SUB : case WASM_OP_I64MUL : case WASM_OP_I64DIVS : case WASM_OP_I64DIVU : case WASM_OP_I64REMS : case WASM_OP_I64REMU : case WASM_OP_I64AND : case WASM_OP_I64OR : case WASM_OP_I64XOR : case WASM_OP_I64SHL : case WASM_OP_I64SHRS : case WASM_OP_I64SHRU : case WASM_OP_I64ROTL : case WASM_OP_I64ROTR : case WASM_OP_F32ABS : case WASM_OP_F32NEG : case WASM_OP_F32CEIL : case WASM_OP_F32FLOOR : case WASM_OP_F32TRUNC : case WASM_OP_F32NEAREST : case WASM_OP_F32SQRT : case WASM_OP_F32ADD : case WASM_OP_F32SUB : case WASM_OP_F32MUL : case WASM_OP_F32DIV : case WASM_OP_F32MIN : case WASM_OP_F32MAX : case WASM_OP_F32COPYSIGN : case WASM_OP_F64ABS : case WASM_OP_F64NEG : case WASM_OP_F64CEIL : case WASM_OP_F64FLOOR : case WASM_OP_F64TRUNC : case WASM_OP_F64NEAREST : case WASM_OP_F64SQRT : case WASM_OP_F64ADD : case WASM_OP_F64SUB : case WASM_OP_F64MUL : case WASM_OP_F64DIV : case WASM_OP_F64MIN : case WASM_OP_F64MAX : case WASM_OP_F64COPYSIGN : case WASM_OP_I32WRAPI64 : case WASM_OP_I32TRUNCSF32 : case WASM_OP_I32TRUNCUF32 : case WASM_OP_I32TRUNCSF64 : case WASM_OP_I32TRUNCUF64 : case WASM_OP_I64EXTENDSI32 : case WASM_OP_I64EXTENDUI32 : case WASM_OP_I64TRUNCSF32 : case WASM_OP_I64TRUNCUF32 : case WASM_OP_I64TRUNCSF64 : case WASM_OP_I64TRUNCUF64 : case WASM_OP_F32CONVERTSI32 : case WASM_OP_F32CONVERTUI32 : case WASM_OP_F32CONVERTSI64 : case WASM_OP_F32CONVERTUI64 : case WASM_OP_F32DEMOTEF64 : case WASM_OP_F64CONVERTSI32 : case WASM_OP_F64CONVERTUI32 : case WASM_OP_F64CONVERTSI64 : case WASM_OP_F64CONVERTUI64 : case WASM_OP_F64PROMOTEF32 : case WASM_OP_I32REINTERPRETF32 : case WASM_OP_I64REINTERPRETF64 : case WASM_OP_F32REINTERPRETI32 : case WASM_OP_F64REINTERPRETI64 : case WASM_OP_END : { snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s\" , opdef -> txt ) ; } break ; case WASM_OP_BLOCK : case WASM_OP_LOOP : case WASM_OP_IF : { st32 val = 0 ; size_t n = read_i32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; switch ( 0x80 - val ) { case R_BIN_WASM_VALUETYPE_EMPTY : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_i32 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>i32)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_i64 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>i64)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_f32 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>f32)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_f64 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>f64)\" , opdef -> txt ) ; break ; default : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>?)\" , opdef -> txt ) ; break ; } op -> len += n ; } break ; case WASM_OP_BR : case WASM_OP_BRIF : case WASM_OP_CALL : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_BRTABLE : { ut32 count = 0 , * table = NULL , def = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & count ) ; if ( ! ( n > 0 && n < buf_len ) ) { goto err ; } if ( ! ( table = calloc ( count , sizeof ( ut32 ) ) ) ) { goto err ; } int i = 0 ; op -> len += n ; for ( i = 0 ; i < count ; i ++ ) { n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & table [ i ] ) ; if ( ! ( op -> len + n <= buf_len ) ) { goto beach ; } op -> len += n ; } n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & def ) ; if ( ! ( n > 0 && n + op -> len < buf_len ) ) { goto beach ; } op -> len += n ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>\" , opdef -> txt , count ) ; <S2SV_StartBug> for ( i = 0 ; i < count && strlen ( op -> txt ) + 10 < R_ASM_BUFSIZE ; i ++ ) { <S2SV_EndBug> <S2SV_StartBug> int optxtlen = strlen ( op -> txt ) ; <S2SV_EndBug> snprintf ( op -> txt + optxtlen , R_ASM_BUFSIZE - optxtlen , \"%d<S2SV_blank>\" , table [ i ] ) ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> snprintf ( op -> txt + strlen ( op -> txt ) , R_ASM_BUFSIZE , \"%d\" , def ) ; <S2SV_EndBug> free ( table ) ; break ; beach : free ( table ) ; goto err ; } break ; case WASM_OP_CALLINDIRECT : { ut32 val = 0 , reserved = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; op -> len += n ; n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & reserved ) ; if ( ! ( n == 1 && op -> len + n <= buf_len ) ) goto err ; reserved &= 0x1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>%d\" , opdef -> txt , val , reserved ) ; op -> len += n ; } break ; case WASM_OP_GETLOCAL : case WASM_OP_SETLOCAL : case WASM_OP_TEELOCAL : case WASM_OP_GETGLOBAL : case WASM_OP_SETGLOBAL : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_I32LOAD : case WASM_OP_I64LOAD : case WASM_OP_F32LOAD : case WASM_OP_F64LOAD : case WASM_OP_I32LOAD8S : case WASM_OP_I32LOAD8U : case WASM_OP_I32LOAD16S : case WASM_OP_I32LOAD16U : case WASM_OP_I64LOAD8S : case WASM_OP_I64LOAD8U : case WASM_OP_I64LOAD16S : case WASM_OP_I64LOAD16U : case WASM_OP_I64LOAD32S : case WASM_OP_I64LOAD32U : case WASM_OP_I32STORE : case WASM_OP_I64STORE : case WASM_OP_F32STORE : case WASM_OP_F64STORE : case WASM_OP_I32STORE8 : case WASM_OP_I32STORE16 : case WASM_OP_I64STORE8 : case WASM_OP_I64STORE16 : case WASM_OP_I64STORE32 : { ut32 flag = 0 , offset = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & flag ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; op -> len += n ; n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & offset ) ; if ( ! ( n > 0 && op -> len + n <= buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>%d\" , opdef -> txt , flag , offset ) ; op -> len += n ; } break ; case WASM_OP_CURRENTMEMORY : case WASM_OP_GROWMEMORY : { ut32 reserved = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & reserved ) ; if ( ! ( n == 1 && n < buf_len ) ) goto err ; reserved &= 0x1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , reserved ) ; op -> len += n ; } break ; case WASM_OP_I32CONST : { st32 val = 0 ; size_t n = read_i32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" PFMT32d , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_I64CONST : { st64 val = 0 ; size_t n = read_i64_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" PFMT64d , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_F32CONST : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; long double d = ( long double ) val ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" LDBLFMT , opdef -> txt , d ) ; op -> len += n ; } break ; case WASM_OP_F64CONST : { ut64 val = 0 ; size_t n = read_u64_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; long double d = ( long double ) val ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" LDBLFMT , opdef -> txt , d ) ; op -> len += n ; } break ; default : goto err ; } return op -> len ; err : op -> len = 1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"invalid\" ) ; return op -> len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count ) ; char * txt = op -> txt ; int txtLen = strlen ( op -> txt ) ; int txtLeft = R_ASM_BUFSIZE - txtLen ; txt += txtLen ; <S2SV_ModStart> < count && txtLen <S2SV_ModEnd> + 10 < <S2SV_ModStart> ++ ) { snprintf ( txt , txtLeft <S2SV_ModEnd> , \"%d<S2SV_blank>\" , <S2SV_ModStart> ] ) ; txtLen = strlen ( txt ) ; txt += txtLen ; txtLeft -= txtLen ; <S2SV_ModStart> } snprintf ( txt , txtLeft - 1 <S2SV_ModEnd> , \"%d\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 u_int atm_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int caplen = h -> caplen ; u_int length = h -> len ; uint32_t llchdr ; u_int hdrlen = 0 ; if ( caplen < 1 || length < 1 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( caplen ) ; } if ( * p == LLC_UI ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"CNLPID<S2SV_blank>\" ) ) ; <S2SV_StartBug> isoclns_print ( ndo , p + 1 , length - 1 , caplen - 1 ) ; <S2SV_EndBug> return hdrlen ; } if ( caplen < 3 || length < 3 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( caplen ) ; } llchdr = EXTRACT_24BITS ( p ) ; if ( llchdr != LLC_UI_HDR ( LLCSAP_SNAP ) && llchdr != LLC_UI_HDR ( LLCSAP_ISONS ) && llchdr != LLC_UI_HDR ( LLCSAP_IP ) ) { if ( caplen < 20 || length < 20 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( caplen ) ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%08x%08x<S2SV_blank>%08x%08x<S2SV_blank>\" , EXTRACT_32BITS ( p ) , EXTRACT_32BITS ( p + 4 ) , EXTRACT_32BITS ( p + 8 ) , EXTRACT_32BITS ( p + 12 ) ) ) ; p += 20 ; length -= 20 ; caplen -= 20 ; hdrlen += 20 ; } hdrlen += atm_llc_print ( ndo , p , length , caplen ) ; return ( hdrlen ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length - 1 <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 void cJSON_AddItemToArray ( cJSON * array , cJSON * item ) { cJSON * c = array -> child ; if ( ! item ) return ; if ( ! c ) { array -> child = item ; } else { while ( c && c -> next ) c = c -> next ; suffix_object ( c , item ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void fadst8_sse2 ( __m128i * in ) { <S2SV_EndBug> const __m128i k__cospi_p02_p30 = pair_set_epi16 ( cospi_2_64 , cospi_30_64 ) ; const __m128i k__cospi_p30_m02 = pair_set_epi16 ( cospi_30_64 , - cospi_2_64 ) ; const __m128i k__cospi_p10_p22 = pair_set_epi16 ( cospi_10_64 , cospi_22_64 ) ; const __m128i k__cospi_p22_m10 = pair_set_epi16 ( cospi_22_64 , - cospi_10_64 ) ; const __m128i k__cospi_p18_p14 = pair_set_epi16 ( cospi_18_64 , cospi_14_64 ) ; const __m128i k__cospi_p14_m18 = pair_set_epi16 ( cospi_14_64 , - cospi_18_64 ) ; const __m128i k__cospi_p26_p06 = pair_set_epi16 ( cospi_26_64 , cospi_6_64 ) ; const __m128i k__cospi_p06_m26 = pair_set_epi16 ( cospi_6_64 , - cospi_26_64 ) ; const __m128i k__cospi_p08_p24 = pair_set_epi16 ( cospi_8_64 , cospi_24_64 ) ; const __m128i k__cospi_p24_m08 = pair_set_epi16 ( cospi_24_64 , - cospi_8_64 ) ; const __m128i k__cospi_m24_p08 = pair_set_epi16 ( - cospi_24_64 , cospi_8_64 ) ; const __m128i k__cospi_p16_m16 = pair_set_epi16 ( cospi_16_64 , - cospi_16_64 ) ; <S2SV_StartBug> const __m128i k__cospi_p16_p16 = _mm_set1_epi16 ( cospi_16_64 ) ; <S2SV_EndBug> const __m128i k__const_0 = _mm_set1_epi16 ( 0 ) ; const __m128i k__DCT_CONST_ROUNDING = _mm_set1_epi32 ( DCT_CONST_ROUNDING ) ; __m128i u0 , u1 , u2 , u3 , u4 , u5 , u6 , u7 , u8 , u9 , u10 , u11 , u12 , u13 , u14 , u15 ; __m128i v0 , v1 , v2 , v3 , v4 , v5 , v6 , v7 , v8 , v9 , v10 , v11 , v12 , v13 , v14 , v15 ; __m128i w0 , w1 , w2 , w3 , w4 , w5 , w6 , w7 , w8 , w9 , w10 , w11 , w12 , w13 , w14 , w15 ; __m128i s0 , s1 , s2 , s3 , s4 , s5 , s6 , s7 ; __m128i in0 , in1 , in2 , in3 , in4 , in5 , in6 , in7 ; in0 = in [ 7 ] ; in1 = in [ 0 ] ; in2 = in [ 5 ] ; in3 = in [ 2 ] ; in4 = in [ 3 ] ; in5 = in [ 4 ] ; in6 = in [ 1 ] ; in7 = in [ 6 ] ; s0 = _mm_unpacklo_epi16 ( in0 , in1 ) ; s1 = _mm_unpackhi_epi16 ( in0 , in1 ) ; s2 = _mm_unpacklo_epi16 ( in2 , in3 ) ; s3 = _mm_unpackhi_epi16 ( in2 , in3 ) ; s4 = _mm_unpacklo_epi16 ( in4 , in5 ) ; s5 = _mm_unpackhi_epi16 ( in4 , in5 ) ; s6 = _mm_unpacklo_epi16 ( in6 , in7 ) ; s7 = _mm_unpackhi_epi16 ( in6 , in7 ) ; u0 = _mm_madd_epi16 ( s0 , k__cospi_p02_p30 ) ; u1 = _mm_madd_epi16 ( s1 , k__cospi_p02_p30 ) ; u2 = _mm_madd_epi16 ( s0 , k__cospi_p30_m02 ) ; u3 = _mm_madd_epi16 ( s1 , k__cospi_p30_m02 ) ; u4 = _mm_madd_epi16 ( s2 , k__cospi_p10_p22 ) ; u5 = _mm_madd_epi16 ( s3 , k__cospi_p10_p22 ) ; u6 = _mm_madd_epi16 ( s2 , k__cospi_p22_m10 ) ; u7 = _mm_madd_epi16 ( s3 , k__cospi_p22_m10 ) ; u8 = _mm_madd_epi16 ( s4 , k__cospi_p18_p14 ) ; u9 = _mm_madd_epi16 ( s5 , k__cospi_p18_p14 ) ; u10 = _mm_madd_epi16 ( s4 , k__cospi_p14_m18 ) ; u11 = _mm_madd_epi16 ( s5 , k__cospi_p14_m18 ) ; u12 = _mm_madd_epi16 ( s6 , k__cospi_p26_p06 ) ; u13 = _mm_madd_epi16 ( s7 , k__cospi_p26_p06 ) ; u14 = _mm_madd_epi16 ( s6 , k__cospi_p06_m26 ) ; u15 = _mm_madd_epi16 ( s7 , k__cospi_p06_m26 ) ; w0 = _mm_add_epi32 ( u0 , u8 ) ; w1 = _mm_add_epi32 ( u1 , u9 ) ; w2 = _mm_add_epi32 ( u2 , u10 ) ; w3 = _mm_add_epi32 ( u3 , u11 ) ; w4 = _mm_add_epi32 ( u4 , u12 ) ; w5 = _mm_add_epi32 ( u5 , u13 ) ; w6 = _mm_add_epi32 ( u6 , u14 ) ; w7 = _mm_add_epi32 ( u7 , u15 ) ; w8 = _mm_sub_epi32 ( u0 , u8 ) ; w9 = _mm_sub_epi32 ( u1 , u9 ) ; w10 = _mm_sub_epi32 ( u2 , u10 ) ; w11 = _mm_sub_epi32 ( u3 , u11 ) ; w12 = _mm_sub_epi32 ( u4 , u12 ) ; w13 = _mm_sub_epi32 ( u5 , u13 ) ; w14 = _mm_sub_epi32 ( u6 , u14 ) ; w15 = _mm_sub_epi32 ( u7 , u15 ) ; v0 = _mm_add_epi32 ( w0 , k__DCT_CONST_ROUNDING ) ; v1 = _mm_add_epi32 ( w1 , k__DCT_CONST_ROUNDING ) ; v2 = _mm_add_epi32 ( w2 , k__DCT_CONST_ROUNDING ) ; v3 = _mm_add_epi32 ( w3 , k__DCT_CONST_ROUNDING ) ; v4 = _mm_add_epi32 ( w4 , k__DCT_CONST_ROUNDING ) ; v5 = _mm_add_epi32 ( w5 , k__DCT_CONST_ROUNDING ) ; v6 = _mm_add_epi32 ( w6 , k__DCT_CONST_ROUNDING ) ; v7 = _mm_add_epi32 ( w7 , k__DCT_CONST_ROUNDING ) ; v8 = _mm_add_epi32 ( w8 , k__DCT_CONST_ROUNDING ) ; v9 = _mm_add_epi32 ( w9 , k__DCT_CONST_ROUNDING ) ; v10 = _mm_add_epi32 ( w10 , k__DCT_CONST_ROUNDING ) ; v11 = _mm_add_epi32 ( w11 , k__DCT_CONST_ROUNDING ) ; v12 = _mm_add_epi32 ( w12 , k__DCT_CONST_ROUNDING ) ; v13 = _mm_add_epi32 ( w13 , k__DCT_CONST_ROUNDING ) ; v14 = _mm_add_epi32 ( w14 , k__DCT_CONST_ROUNDING ) ; v15 = _mm_add_epi32 ( w15 , k__DCT_CONST_ROUNDING ) ; u0 = _mm_srai_epi32 ( v0 , DCT_CONST_BITS ) ; u1 = _mm_srai_epi32 ( v1 , DCT_CONST_BITS ) ; u2 = _mm_srai_epi32 ( v2 , DCT_CONST_BITS ) ; u3 = _mm_srai_epi32 ( v3 , DCT_CONST_BITS ) ; u4 = _mm_srai_epi32 ( v4 , DCT_CONST_BITS ) ; u5 = _mm_srai_epi32 ( v5 , DCT_CONST_BITS ) ; u6 = _mm_srai_epi32 ( v6 , DCT_CONST_BITS ) ; u7 = _mm_srai_epi32 ( v7 , DCT_CONST_BITS ) ; u8 = _mm_srai_epi32 ( v8 , DCT_CONST_BITS ) ; u9 = _mm_srai_epi32 ( v9 , DCT_CONST_BITS ) ; u10 = _mm_srai_epi32 ( v10 , DCT_CONST_BITS ) ; u11 = _mm_srai_epi32 ( v11 , DCT_CONST_BITS ) ; u12 = _mm_srai_epi32 ( v12 , DCT_CONST_BITS ) ; u13 = _mm_srai_epi32 ( v13 , DCT_CONST_BITS ) ; u14 = _mm_srai_epi32 ( v14 , DCT_CONST_BITS ) ; u15 = _mm_srai_epi32 ( v15 , DCT_CONST_BITS ) ; in [ 0 ] = _mm_packs_epi32 ( u0 , u1 ) ; in [ 1 ] = _mm_packs_epi32 ( u2 , u3 ) ; in [ 2 ] = _mm_packs_epi32 ( u4 , u5 ) ; in [ 3 ] = _mm_packs_epi32 ( u6 , u7 ) ; in [ 4 ] = _mm_packs_epi32 ( u8 , u9 ) ; in [ 5 ] = _mm_packs_epi32 ( u10 , u11 ) ; in [ 6 ] = _mm_packs_epi32 ( u12 , u13 ) ; in [ 7 ] = _mm_packs_epi32 ( u14 , u15 ) ; s0 = _mm_add_epi16 ( in [ 0 ] , in [ 2 ] ) ; s1 = _mm_add_epi16 ( in [ 1 ] , in [ 3 ] ) ; s2 = _mm_sub_epi16 ( in [ 0 ] , in [ 2 ] ) ; s3 = _mm_sub_epi16 ( in [ 1 ] , in [ 3 ] ) ; u0 = _mm_unpacklo_epi16 ( in [ 4 ] , in [ 5 ] ) ; u1 = _mm_unpackhi_epi16 ( in [ 4 ] , in [ 5 ] ) ; u2 = _mm_unpacklo_epi16 ( in [ 6 ] , in [ 7 ] ) ; u3 = _mm_unpackhi_epi16 ( in [ 6 ] , in [ 7 ] ) ; v0 = _mm_madd_epi16 ( u0 , k__cospi_p08_p24 ) ; v1 = _mm_madd_epi16 ( u1 , k__cospi_p08_p24 ) ; v2 = _mm_madd_epi16 ( u0 , k__cospi_p24_m08 ) ; v3 = _mm_madd_epi16 ( u1 , k__cospi_p24_m08 ) ; v4 = _mm_madd_epi16 ( u2 , k__cospi_m24_p08 ) ; v5 = _mm_madd_epi16 ( u3 , k__cospi_m24_p08 ) ; v6 = _mm_madd_epi16 ( u2 , k__cospi_p08_p24 ) ; v7 = _mm_madd_epi16 ( u3 , k__cospi_p08_p24 ) ; w0 = _mm_add_epi32 ( v0 , v4 ) ; w1 = _mm_add_epi32 ( v1 , v5 ) ; w2 = _mm_add_epi32 ( v2 , v6 ) ; w3 = _mm_add_epi32 ( v3 , v7 ) ; w4 = _mm_sub_epi32 ( v0 , v4 ) ; w5 = _mm_sub_epi32 ( v1 , v5 ) ; w6 = _mm_sub_epi32 ( v2 , v6 ) ; w7 = _mm_sub_epi32 ( v3 , v7 ) ; v0 = _mm_add_epi32 ( w0 , k__DCT_CONST_ROUNDING ) ; v1 = _mm_add_epi32 ( w1 , k__DCT_CONST_ROUNDING ) ; v2 = _mm_add_epi32 ( w2 , k__DCT_CONST_ROUNDING ) ; v3 = _mm_add_epi32 ( w3 , k__DCT_CONST_ROUNDING ) ; v4 = _mm_add_epi32 ( w4 , k__DCT_CONST_ROUNDING ) ; v5 = _mm_add_epi32 ( w5 , k__DCT_CONST_ROUNDING ) ; v6 = _mm_add_epi32 ( w6 , k__DCT_CONST_ROUNDING ) ; v7 = _mm_add_epi32 ( w7 , k__DCT_CONST_ROUNDING ) ; u0 = _mm_srai_epi32 ( v0 , DCT_CONST_BITS ) ; u1 = _mm_srai_epi32 ( v1 , DCT_CONST_BITS ) ; u2 = _mm_srai_epi32 ( v2 , DCT_CONST_BITS ) ; u3 = _mm_srai_epi32 ( v3 , DCT_CONST_BITS ) ; u4 = _mm_srai_epi32 ( v4 , DCT_CONST_BITS ) ; u5 = _mm_srai_epi32 ( v5 , DCT_CONST_BITS ) ; u6 = _mm_srai_epi32 ( v6 , DCT_CONST_BITS ) ; u7 = _mm_srai_epi32 ( v7 , DCT_CONST_BITS ) ; s4 = _mm_packs_epi32 ( u0 , u1 ) ; s5 = _mm_packs_epi32 ( u2 , u3 ) ; s6 = _mm_packs_epi32 ( u4 , u5 ) ; s7 = _mm_packs_epi32 ( u6 , u7 ) ; u0 = _mm_unpacklo_epi16 ( s2 , s3 ) ; u1 = _mm_unpackhi_epi16 ( s2 , s3 ) ; u2 = _mm_unpacklo_epi16 ( s6 , s7 ) ; u3 = _mm_unpackhi_epi16 ( s6 , s7 ) ; v0 = _mm_madd_epi16 ( u0 , k__cospi_p16_p16 ) ; v1 = _mm_madd_epi16 ( u1 , k__cospi_p16_p16 ) ; v2 = _mm_madd_epi16 ( u0 , k__cospi_p16_m16 ) ; v3 = _mm_madd_epi16 ( u1 , k__cospi_p16_m16 ) ; v4 = _mm_madd_epi16 ( u2 , k__cospi_p16_p16 ) ; v5 = _mm_madd_epi16 ( u3 , k__cospi_p16_p16 ) ; v6 = _mm_madd_epi16 ( u2 , k__cospi_p16_m16 ) ; v7 = _mm_madd_epi16 ( u3 , k__cospi_p16_m16 ) ; u0 = _mm_add_epi32 ( v0 , k__DCT_CONST_ROUNDING ) ; u1 = _mm_add_epi32 ( v1 , k__DCT_CONST_ROUNDING ) ; u2 = _mm_add_epi32 ( v2 , k__DCT_CONST_ROUNDING ) ; u3 = _mm_add_epi32 ( v3 , k__DCT_CONST_ROUNDING ) ; u4 = _mm_add_epi32 ( v4 , k__DCT_CONST_ROUNDING ) ; u5 = _mm_add_epi32 ( v5 , k__DCT_CONST_ROUNDING ) ; u6 = _mm_add_epi32 ( v6 , k__DCT_CONST_ROUNDING ) ; u7 = _mm_add_epi32 ( v7 , k__DCT_CONST_ROUNDING ) ; v0 = _mm_srai_epi32 ( u0 , DCT_CONST_BITS ) ; v1 = _mm_srai_epi32 ( u1 , DCT_CONST_BITS ) ; v2 = _mm_srai_epi32 ( u2 , DCT_CONST_BITS ) ; v3 = _mm_srai_epi32 ( u3 , DCT_CONST_BITS ) ; v4 = _mm_srai_epi32 ( u4 , DCT_CONST_BITS ) ; v5 = _mm_srai_epi32 ( u5 , DCT_CONST_BITS ) ; v6 = _mm_srai_epi32 ( u6 , DCT_CONST_BITS ) ; v7 = _mm_srai_epi32 ( u7 , DCT_CONST_BITS ) ; s2 = _mm_packs_epi32 ( v0 , v1 ) ; s3 = _mm_packs_epi32 ( v2 , v3 ) ; s6 = _mm_packs_epi32 ( v4 , v5 ) ; s7 = _mm_packs_epi32 ( v6 , v7 ) ; in [ 0 ] = s0 ; in [ 1 ] = _mm_sub_epi16 ( k__const_0 , s4 ) ; in [ 2 ] = s6 ; in [ 3 ] = _mm_sub_epi16 ( k__const_0 , s2 ) ; in [ 4 ] = s3 ; in [ 5 ] = _mm_sub_epi16 ( k__const_0 , s7 ) ; in [ 6 ] = s5 ; in [ 7 ] = _mm_sub_epi16 ( k__const_0 , s1 ) ; array_transpose_8x8 ( in , in ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> = _mm_set1_epi16 ( ( int16_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static const char * parse_number ( cJSON * item , const char * num ) { <S2SV_StartBug> int64_t i = 0 ; <S2SV_EndBug> double f = 0 ; <S2SV_StartBug> int isint = 1 ; <S2SV_EndBug> int sign = 1 , scale = 0 , subscale = 0 , signsubscale = 1 ; if ( * num == '-' ) { sign = - 1 ; ++ num ; } if ( * num == '0' ) ++ num ; if ( * num >= '1' && * num <= '9' ) { do { i = ( i * 10 ) + ( * num - '0' ) ; <S2SV_StartBug> f = ( f * 10.0 ) + ( * num - '0' ) ; <S2SV_EndBug> ++ num ; } while ( * num >= '0' && * num <= '9' ) ; } if ( * num == '.' && num [ 1 ] >= '0' && num [ 1 ] <= '9' ) { isint = 0 ; ++ num ; do { f = ( f * 10.0 ) + ( * num ++ - '0' ) ; scale -- ; <S2SV_StartBug> } while ( * num >= '0' && * num <= '9' ) ; <S2SV_EndBug> } if ( * num == 'e' || * num == 'E' ) { <S2SV_StartBug> isint = 0 ; <S2SV_EndBug> ++ num ; if ( * num == '+' ) <S2SV_StartBug> ++ num ; <S2SV_EndBug> <S2SV_StartBug> else if ( * num == '-' ) { <S2SV_EndBug> <S2SV_StartBug> signsubscale = - 1 ; <S2SV_EndBug> ++ num ; } while ( * num >= '0' && * num <= '9' ) subscale = ( subscale * 10 ) + ( * num ++ - '0' ) ; } if ( isint ) { <S2SV_StartBug> i = sign * i ; <S2SV_EndBug> <S2SV_StartBug> item -> valueint = i ; <S2SV_EndBug> item -> valuefloat = i ; } else { f = sign * f * ipow ( 10.0 , scale + subscale * signsubscale ) ; item -> valueint = f ; item -> valuefloat = f ; } item -> type = cJSON_Number ; return num ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> num ) { double n = 0 , sign = 1 , scale <S2SV_ModEnd> = 0 ; <S2SV_ModStart> 0 ; int subscale = 0 , signsubscale = 1 ; if ( * num == '-' ) sign = - 1 , num ++ ; if ( * num == '0' ) num ++ ; if ( * num >= '1' && * num <= '9' ) do n = ( n * 10.0 ) + ( * num ++ - '0' ) ; while ( * num >= '0' && * num <= '9' ) ; if ( * num == '.' && num [ 1 ] >= '0' && num [ 1 ] <= '9' ) { num ++ ; do n = ( n <S2SV_ModEnd> * 10.0 ) <S2SV_ModStart> ( * num ++ - '0' ) , <S2SV_ModEnd> scale -- ; <S2SV_ModStart> scale -- ; <S2SV_ModEnd> while ( * <S2SV_ModStart> 'E' ) { num ++ ; <S2SV_ModEnd> if ( * <S2SV_ModStart> == '+' ) num ++ ; <S2SV_ModEnd> else if ( <S2SV_ModStart> == '-' ) <S2SV_ModEnd> signsubscale = - <S2SV_ModStart> = - 1 , num ++ ; while ( * num >= '0' && * num <= '9' ) subscale = ( subscale * 10 ) + ( * num ++ - '0' ) ; } n <S2SV_ModEnd> = sign * <S2SV_ModStart> = sign * n * pow ( 10.0 , ( scale + subscale * signsubscale ) ) ; item -> valuedouble = n <S2SV_ModEnd> ; item -> <S2SV_ModStart> -> valueint = ( int64_t ) n ; <S2SV_ModEnd> item -> type\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1833\n\n```\nCWE-264 static struct dentry * ecryptfs_mount ( struct file_system_type * fs_type , int flags , const char * dev_name , void * raw_data ) { struct super_block * s ; struct ecryptfs_sb_info * sbi ; struct ecryptfs_dentry_info * root_info ; const char * err = \"Getting<S2SV_blank>sb<S2SV_blank>failed\" ; struct inode * inode ; struct path path ; <S2SV_StartBug> int rc ; <S2SV_EndBug> sbi = kmem_cache_zalloc ( ecryptfs_sb_info_cache , GFP_KERNEL ) ; if ( ! sbi ) { rc = - ENOMEM ; goto out ; } <S2SV_StartBug> rc = ecryptfs_parse_options ( sbi , raw_data ) ; <S2SV_EndBug> if ( rc ) { err = \"Error<S2SV_blank>parsing<S2SV_blank>options\" ; goto out ; } s = sget ( fs_type , NULL , set_anon_super , NULL ) ; if ( IS_ERR ( s ) ) { rc = PTR_ERR ( s ) ; goto out ; } s -> s_flags = flags ; rc = bdi_setup_and_register ( & sbi -> bdi , \"ecryptfs\" , BDI_CAP_MAP_COPY ) ; if ( rc ) goto out1 ; ecryptfs_set_superblock_private ( s , sbi ) ; s -> s_bdi = & sbi -> bdi ; sbi = NULL ; s -> s_op = & ecryptfs_sops ; s -> s_d_op = & ecryptfs_dops ; err = \"Reading<S2SV_blank>sb<S2SV_blank>failed\" ; rc = kern_path ( dev_name , LOOKUP_FOLLOW | LOOKUP_DIRECTORY , & path ) ; if ( rc ) { ecryptfs_printk ( KERN_WARNING , \"kern_path()<S2SV_blank>failed\\\\n\" ) ; goto out1 ; } if ( path . dentry -> d_sb -> s_type == & ecryptfs_fs_type ) { rc = - EINVAL ; printk ( KERN_ERR \"Mount<S2SV_blank>on<S2SV_blank>filesystem<S2SV_blank>of<S2SV_blank>type<S2SV_blank>\" \"eCryptfs<S2SV_blank>explicitly<S2SV_blank>disallowed<S2SV_blank>due<S2SV_blank>to<S2SV_blank>\" \"known<S2SV_blank>incompatibilities\\\\n\" ) ; goto out_free ; } <S2SV_StartBug> ecryptfs_set_superblock_lower ( s , path . dentry -> d_sb ) ; <S2SV_EndBug> s -> s_maxbytes = path . dentry -> d_sb -> s_maxbytes ; s -> s_blocksize = path . dentry -> d_sb -> s_blocksize ; s -> s_magic = ECRYPTFS_SUPER_MAGIC ; inode = ecryptfs_get_inode ( path . dentry -> d_inode , s ) ; rc = PTR_ERR ( inode ) ; if ( IS_ERR ( inode ) ) goto out_free ; s -> s_root = d_alloc_root ( inode ) ; if ( ! s -> s_root ) { iput ( inode ) ; rc = - ENOMEM ; goto out_free ; } rc = - ENOMEM ; root_info = kmem_cache_zalloc ( ecryptfs_dentry_info_cache , GFP_KERNEL ) ; if ( ! root_info ) goto out_free ; ecryptfs_set_dentry_private ( s -> s_root , root_info ) ; ecryptfs_set_dentry_lower ( s -> s_root , path . dentry ) ; ecryptfs_set_dentry_lower_mnt ( s -> s_root , path . mnt ) ; s -> s_flags |= MS_ACTIVE ; return dget ( s -> s_root ) ; out_free : path_put ( & path ) ; out1 : deactivate_locked_super ( s ) ; out : if ( sbi ) { ecryptfs_destroy_mount_crypt_stat ( & sbi -> mount_crypt_stat ) ; kmem_cache_free ( ecryptfs_sb_info_cache , sbi ) ; } printk ( KERN_ERR \"%s;<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , err , rc ) ; return ERR_PTR ( rc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> path path ; uid_t check_ruid ; <S2SV_ModStart> sbi , raw_data , & check_ruid <S2SV_ModStart> out_free ; } if ( check_ruid && path . dentry -> d_inode -> i_uid != current_uid ( ) ) { rc = - EPERM ; printk ( KERN_ERR \"Mount<S2SV_blank>of<S2SV_blank>device<S2SV_blank>(uid:<S2SV_blank>%d)<S2SV_blank>not<S2SV_blank>owned<S2SV_blank>by<S2SV_blank>\" \"requested<S2SV_blank>user<S2SV_blank>(uid:<S2SV_blank>%d)\\\\n\" , path . dentry -> d_inode -> i_uid , current_uid ( ) ) ; goto out_free ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2546\n\n```\nCWE-362 static int snd_timer_user_open ( struct inode * inode , struct file * file ) { struct snd_timer_user * tu ; int err ; err = nonseekable_open ( inode , file ) ; if ( err < 0 ) return err ; tu = kzalloc ( sizeof ( * tu ) , GFP_KERNEL ) ; if ( tu == NULL ) return - ENOMEM ; spin_lock_init ( & tu -> qlock ) ; init_waitqueue_head ( & tu -> qchange_sleep ) ; <S2SV_StartBug> mutex_init ( & tu -> tread_sem ) ; <S2SV_EndBug> tu -> ticks = 1 ; tu -> queue_size = 128 ; tu -> queue = kmalloc ( tu -> queue_size * sizeof ( struct snd_timer_read ) , GFP_KERNEL ) ; if ( tu -> queue == NULL ) { kfree ( tu ) ; return - ENOMEM ; } file -> private_data = tu ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & tu -> ioctl_lock <S2SV_ModEnd> ) ; tu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_pack_bitstream ( VP8_COMP * cpi , unsigned char * dest , unsigned char * dest_end , unsigned long * size ) { int i , j ; VP8_HEADER oh ; VP8_COMMON * const pc = & cpi -> common ; vp8_writer * const bc = cpi -> bc ; MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; int extra_bytes_packed = 0 ; unsigned char * cx_data = dest ; unsigned char * cx_data_end = dest_end ; const int * mb_feature_data_bits ; oh . show_frame = ( int ) pc -> show_frame ; oh . type = ( int ) pc -> frame_type ; oh . version = pc -> version ; oh . first_partition_length_in_bytes = 0 ; mb_feature_data_bits = vp8_mb_feature_data_bits ; bc [ 0 ] . error = & pc -> error ; validate_buffer ( cx_data , 3 , cx_data_end , & cpi -> common . error ) ; cx_data += 3 ; # if defined ( SECTIONBITS_OUTPUT ) Sectionbits [ active_section = 1 ] += sizeof ( VP8_HEADER ) * 8 * 256 ; # endif if ( oh . type == KEY_FRAME ) { int v ; validate_buffer ( cx_data , 7 , cx_data_end , & cpi -> common . error ) ; cx_data [ 0 ] = 0x9D ; cx_data [ 1 ] = 0x01 ; cx_data [ 2 ] = 0x2a ; v = ( pc -> horiz_scale << 14 ) | pc -> Width ; cx_data [ 3 ] = v ; cx_data [ 4 ] = v >> 8 ; v = ( pc -> vert_scale << 14 ) | pc -> Height ; cx_data [ 5 ] = v ; cx_data [ 6 ] = v >> 8 ; extra_bytes_packed = 7 ; cx_data += extra_bytes_packed ; vp8_start_encode ( bc , cx_data , cx_data_end ) ; vp8_write_bit ( bc , 0 ) ; vp8_write_bit ( bc , pc -> clamp_type ) ; } else vp8_start_encode ( bc , cx_data , cx_data_end ) ; vp8_write_bit ( bc , xd -> segmentation_enabled ) ; if ( xd -> segmentation_enabled ) { vp8_write_bit ( bc , xd -> update_mb_segmentation_map ) ; vp8_write_bit ( bc , xd -> update_mb_segmentation_data ) ; if ( xd -> update_mb_segmentation_data ) { signed char Data ; vp8_write_bit ( bc , xd -> mb_segement_abs_delta ) ; for ( i = 0 ; i < MB_LVL_MAX ; i ++ ) { for ( j = 0 ; j < MAX_MB_SEGMENTS ; j ++ ) { Data = xd -> segment_feature_data [ i ] [ j ] ; if ( Data ) { vp8_write_bit ( bc , 1 ) ; if ( Data < 0 ) { Data = - Data ; vp8_write_literal ( bc , Data , mb_feature_data_bits [ i ] ) ; vp8_write_bit ( bc , 1 ) ; } else { vp8_write_literal ( bc , Data , mb_feature_data_bits [ i ] ) ; vp8_write_bit ( bc , 0 ) ; } } else vp8_write_bit ( bc , 0 ) ; } } } if ( xd -> update_mb_segmentation_map ) { for ( i = 0 ; i < MB_FEATURE_TREE_PROBS ; i ++ ) { int Data = xd -> mb_segment_tree_probs [ i ] ; if ( Data != 255 ) { vp8_write_bit ( bc , 1 ) ; vp8_write_literal ( bc , Data , 8 ) ; } else vp8_write_bit ( bc , 0 ) ; } } } vp8_write_bit ( bc , pc -> filter_type ) ; vp8_write_literal ( bc , pc -> filter_level , 6 ) ; vp8_write_literal ( bc , pc -> sharpness_level , 3 ) ; vp8_write_bit ( bc , xd -> mode_ref_lf_delta_enabled ) ; if ( xd -> mode_ref_lf_delta_enabled ) { int send_update = xd -> mode_ref_lf_delta_update || cpi -> oxcf . error_resilient_mode ; vp8_write_bit ( bc , send_update ) ; if ( send_update ) { int Data ; for ( i = 0 ; i < MAX_REF_LF_DELTAS ; i ++ ) { Data = xd -> ref_lf_deltas [ i ] ; if ( xd -> ref_lf_deltas [ i ] != xd -> last_ref_lf_deltas [ i ] || cpi -> oxcf . error_resilient_mode ) { xd -> last_ref_lf_deltas [ i ] = xd -> ref_lf_deltas [ i ] ; vp8_write_bit ( bc , 1 ) ; if ( Data > 0 ) { vp8_write_literal ( bc , ( Data & 0x3F ) , 6 ) ; vp8_write_bit ( bc , 0 ) ; } else { Data = - Data ; vp8_write_literal ( bc , ( Data & 0x3F ) , 6 ) ; vp8_write_bit ( bc , 1 ) ; } } else vp8_write_bit ( bc , 0 ) ; } for ( i = 0 ; i < MAX_MODE_LF_DELTAS ; i ++ ) { Data = xd -> mode_lf_deltas [ i ] ; if ( xd -> mode_lf_deltas [ i ] != xd -> last_mode_lf_deltas [ i ] || cpi -> oxcf . error_resilient_mode ) { xd -> last_mode_lf_deltas [ i ] = xd -> mode_lf_deltas [ i ] ; vp8_write_bit ( bc , 1 ) ; if ( Data > 0 ) { vp8_write_literal ( bc , ( Data & 0x3F ) , 6 ) ; vp8_write_bit ( bc , 0 ) ; } else { Data = - Data ; vp8_write_literal ( bc , ( Data & 0x3F ) , 6 ) ; vp8_write_bit ( bc , 1 ) ; } } else vp8_write_bit ( bc , 0 ) ; } } } vp8_write_literal ( bc , pc -> multi_token_partition , 2 ) ; vp8_write_literal ( bc , pc -> base_qindex , 7 ) ; put_delta_q ( bc , pc -> y1dc_delta_q ) ; put_delta_q ( bc , pc -> y2dc_delta_q ) ; put_delta_q ( bc , pc -> y2ac_delta_q ) ; put_delta_q ( bc , pc -> uvdc_delta_q ) ; put_delta_q ( bc , pc -> uvac_delta_q ) ; if ( pc -> frame_type != KEY_FRAME ) { vp8_write_bit ( bc , pc -> refresh_golden_frame ) ; vp8_write_bit ( bc , pc -> refresh_alt_ref_frame ) ; if ( ! pc -> refresh_golden_frame ) vp8_write_literal ( bc , pc -> copy_buffer_to_gf , 2 ) ; if ( ! pc -> refresh_alt_ref_frame ) vp8_write_literal ( bc , pc -> copy_buffer_to_arf , 2 ) ; vp8_write_bit ( bc , pc -> ref_frame_sign_bias [ GOLDEN_FRAME ] ) ; vp8_write_bit ( bc , pc -> ref_frame_sign_bias [ ALTREF_FRAME ] ) ; } # if ! ( CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING ) if ( cpi -> oxcf . error_resilient_mode & VPX_ERROR_RESILIENT_PARTITIONS ) { if ( pc -> frame_type == KEY_FRAME ) pc -> refresh_entropy_probs = 1 ; else pc -> refresh_entropy_probs = 0 ; } # endif vp8_write_bit ( bc , pc -> refresh_entropy_probs ) ; if ( pc -> frame_type != KEY_FRAME ) vp8_write_bit ( bc , pc -> refresh_last_frame ) ; # ifdef VP8_ENTROPY_STATS if ( pc -> frame_type == INTER_FRAME ) active_section = 0 ; else active_section = 7 ; # endif vp8_clear_system_state ( ) ; # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING pack_coef_probs ( cpi ) ; # else if ( pc -> refresh_entropy_probs == 0 ) { <S2SV_StartBug> vpx_memcpy ( & cpi -> common . lfc , & cpi -> common . fc , sizeof ( cpi -> common . fc ) ) ; <S2SV_EndBug> } vp8_update_coef_probs ( cpi ) ; # endif # ifdef VP8_ENTROPY_STATS active_section = 2 ; # endif vp8_write_bit ( bc , pc -> mb_no_coeff_skip ) ; if ( pc -> frame_type == KEY_FRAME ) { write_kfmodes ( cpi ) ; # ifdef VP8_ENTROPY_STATS active_section = 8 ; # endif } else { pack_inter_mode_mvs ( cpi ) ; # ifdef VP8_ENTROPY_STATS active_section = 1 ; # endif } vp8_stop_encode ( bc ) ; cx_data += bc -> pos ; oh . first_partition_length_in_bytes = cpi -> bc -> pos ; { int v = ( oh . first_partition_length_in_bytes << 5 ) | ( oh . show_frame << 4 ) | ( oh . version << 1 ) | oh . type ; dest [ 0 ] = v ; dest [ 1 ] = v >> 8 ; dest [ 2 ] = v >> 16 ; } * size = VP8_HEADER_SIZE + extra_bytes_packed + cpi -> bc -> pos ; cpi -> partition_sz [ 0 ] = * size ; # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING { const int num_part = ( 1 << pc -> multi_token_partition ) ; unsigned char * dp = cpi -> partition_d [ 0 ] + cpi -> partition_sz [ 0 ] ; if ( num_part > 1 ) { validate_buffer ( dp , 3 * ( num_part - 1 ) , cpi -> partition_d_end [ 0 ] , & pc -> error ) ; cpi -> partition_sz [ 0 ] += 3 * ( num_part - 1 ) ; for ( i = 1 ; i < num_part ; i ++ ) { write_partition_size ( dp , cpi -> partition_sz [ i ] ) ; dp += 3 ; } } if ( ! cpi -> output_partition ) { for ( i = 0 ; i < num_part ; i ++ ) { <S2SV_StartBug> vpx_memmove ( dp , cpi -> partition_d [ i + 1 ] , cpi -> partition_sz [ i + 1 ] ) ; <S2SV_EndBug> cpi -> partition_d [ i + 1 ] = dp ; dp += cpi -> partition_sz [ i + 1 ] ; } } * size = 0 ; for ( i = 0 ; i < num_part + 1 ; i ++ ) { * size += cpi -> partition_sz [ i ] ; } } # else if ( pc -> multi_token_partition != ONE_PARTITION ) { int num_part = 1 << pc -> multi_token_partition ; cpi -> partition_sz [ 0 ] += 3 * ( num_part - 1 ) ; * size += 3 * ( num_part - 1 ) ; validate_buffer ( cx_data , 3 * ( num_part - 1 ) , cx_data_end , & pc -> error ) ; for ( i = 1 ; i < num_part + 1 ; i ++ ) { cpi -> bc [ i ] . error = & pc -> error ; } pack_tokens_into_partitions ( cpi , cx_data + 3 * ( num_part - 1 ) , cx_data_end , num_part ) ; for ( i = 1 ; i < num_part ; i ++ ) { cpi -> partition_sz [ i ] = cpi -> bc [ i ] . pos ; write_partition_size ( cx_data , cpi -> partition_sz [ i ] ) ; cx_data += 3 ; * size += cpi -> partition_sz [ i ] ; } cpi -> partition_sz [ i ] = cpi -> bc [ i ] . pos ; * size += cpi -> partition_sz [ i ] ; } else { bc [ 1 ] . error = & pc -> error ; vp8_start_encode ( & cpi -> bc [ 1 ] , cx_data , cx_data_end ) ; # if CONFIG_MULTITHREAD if ( cpi -> b_multi_threaded ) pack_mb_row_tokens ( cpi , & cpi -> bc [ 1 ] ) ; else # endif <S2SV_StartBug> pack_tokens ( & cpi -> bc [ 1 ] , cpi -> tok , cpi -> tok_count ) ; <S2SV_EndBug> vp8_stop_encode ( & cpi -> bc [ 1 ] ) ; * size += cpi -> bc [ 1 ] . pos ; cpi -> partition_sz [ 1 ] = cpi -> bc [ 1 ] . pos ; } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { memcpy <S2SV_ModEnd> ( & cpi <S2SV_ModStart> ++ ) { memmove <S2SV_ModEnd> ( dp , <S2SV_ModStart> else # endif vp8_pack_tokens <S2SV_ModEnd> ( & cpi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18839\n\n```\nCWE-200 char * url_decode_r ( char * to , char * url , size_t size ) { char * s = url , * d = to , * e = & to [ size - 1 ] ; while ( * s && d < e ) { if ( unlikely ( * s == '%' ) ) { if ( likely ( s [ 1 ] && s [ 2 ] ) ) { <S2SV_StartBug> * d ++ = from_hex ( s [ 1 ] ) << 4 | from_hex ( s [ 2 ] ) ; <S2SV_EndBug> s += 2 ; } } else if ( unlikely ( * s == '+' ) ) * d ++ = '<S2SV_blank>' ; else * d ++ = * s ; s ++ ; } * d = '\\\\0' ; return to ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { char t <S2SV_ModEnd> = from_hex ( <S2SV_ModStart> [ 2 ] ) ; * d ++ = ( char ) ( ( isprint ( t ) ) ? t : '<S2SV_blank>'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline unsigned int ReadPropertyUnsignedLong ( const EndianType endian , const unsigned char * buffer ) { unsigned int value ; if ( endian == LSBEndian ) { <S2SV_StartBug> value = ( unsigned int ) ( ( buffer [ 3 ] << 24 ) | ( buffer [ 2 ] << 16 ) | <S2SV_EndBug> <S2SV_StartBug> ( buffer [ 1 ] << 8 ) | ( buffer [ 0 ] ) ) ; <S2SV_EndBug> <S2SV_StartBug> return ( ( unsigned int ) ( value & 0xffffffff ) ) ; <S2SV_EndBug> } <S2SV_StartBug> value = ( unsigned int ) ( ( buffer [ 0 ] << 24 ) | ( buffer [ 1 ] << 16 ) | <S2SV_EndBug> <S2SV_StartBug> ( buffer [ 2 ] << 8 ) | buffer [ 3 ] ) ; <S2SV_EndBug> <S2SV_StartBug> return ( ( unsigned int ) ( value & 0xffffffff ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int ) <S2SV_ModEnd> buffer [ 3 <S2SV_ModStart> ] << 24 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 2 <S2SV_ModStart> ] << 16 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 8 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; return ( <S2SV_ModStart> ; return ( <S2SV_ModEnd> value & 0xffffffff <S2SV_ModStart> value & 0xffffffff <S2SV_ModEnd> ) ; } <S2SV_ModStart> unsigned int ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> ] << 24 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 16 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 2 <S2SV_ModStart> ] << 8 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 3 <S2SV_ModStart> [ 3 ] ; return <S2SV_ModEnd> ( value & <S2SV_ModStart> & 0xffffffff ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1860\n\n```\nCWE-119 static ssize_t wdm_read ( struct file * file , char __user * buffer , size_t count , loff_t * ppos ) { int rv , cntr ; int i = 0 ; struct wdm_device * desc = file -> private_data ; rv = mutex_lock_interruptible ( & desc -> rlock ) ; if ( rv < 0 ) return - ERESTARTSYS ; cntr = ACCESS_ONCE ( desc -> length ) ; if ( cntr == 0 ) { desc -> read = 0 ; retry : if ( test_bit ( WDM_DISCONNECTING , & desc -> flags ) ) { rv = - ENODEV ; goto err ; } <S2SV_StartBug> i ++ ; <S2SV_EndBug> if ( file -> f_flags & O_NONBLOCK ) { if ( ! test_bit ( WDM_READ , & desc -> flags ) ) { rv = cntr ? cntr : - EAGAIN ; goto err ; } rv = 0 ; } else { rv = wait_event_interruptible ( desc -> wait , test_bit ( WDM_READ , & desc -> flags ) ) ; } if ( test_bit ( WDM_DISCONNECTING , & desc -> flags ) ) { rv = - ENODEV ; goto err ; } if ( test_bit ( WDM_RESETTING , & desc -> flags ) ) { rv = - EIO ; goto err ; } usb_mark_last_busy ( interface_to_usbdev ( desc -> intf ) ) ; if ( rv < 0 ) { rv = - ERESTARTSYS ; goto err ; } spin_lock_irq ( & desc -> iuspin ) ; if ( desc -> rerr ) { desc -> rerr = 0 ; spin_unlock_irq ( & desc -> iuspin ) ; rv = - EIO ; goto err ; } if ( ! test_bit ( WDM_READ , & desc -> flags ) ) { spin_unlock_irq ( & desc -> iuspin ) ; goto retry ; } if ( ! desc -> reslength ) { dev_dbg ( & desc -> intf -> dev , \"%s:<S2SV_blank>zero<S2SV_blank>length<S2SV_blank>-<S2SV_blank>clearing<S2SV_blank>WDM_READ\\\\n\" , __func__ ) ; clear_bit ( WDM_READ , & desc -> flags ) ; spin_unlock_irq ( & desc -> iuspin ) ; goto retry ; } cntr = desc -> length ; spin_unlock_irq ( & desc -> iuspin ) ; } if ( cntr > count ) cntr = count ; rv = copy_to_user ( buffer , desc -> ubuf , cntr ) ; if ( rv > 0 ) { rv = - EFAULT ; goto err ; } spin_lock_irq ( & desc -> iuspin ) ; for ( i = 0 ; i < desc -> length - cntr ; i ++ ) desc -> ubuf [ i ] = desc -> ubuf [ i + cntr ] ; desc -> length -= cntr ; if ( ! desc -> length ) clear_bit ( WDM_READ , & desc -> flags ) ; spin_unlock_irq ( & desc -> iuspin ) ; rv = cntr ; err : mutex_unlock ( & desc -> rlock ) ; return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } if ( test_bit ( WDM_OVERFLOW , & desc -> flags ) ) { clear_bit ( WDM_OVERFLOW , & desc -> flags ) ; rv = - ENOBUFS ; goto err ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15173\n\n```\nCWE-119 int l2tp_recv ( int fd , struct l2tp_packet_t * * p , struct in_pktinfo * pkt_info , const char * secret , size_t secret_len ) { <S2SV_StartBug> int n , length ; <S2SV_EndBug> uint8_t * buf ; struct l2tp_hdr_t * hdr ; struct l2tp_avp_t * avp ; <S2SV_StartBug> struct l2tp_dict_attr_t * da ; <S2SV_EndBug> <S2SV_StartBug> struct l2tp_attr_t * attr , * RV = NULL ; <S2SV_EndBug> uint8_t * ptr ; struct l2tp_packet_t * pack ; struct sockaddr_in addr ; <S2SV_StartBug> socklen_t len = sizeof ( addr ) ; <S2SV_EndBug> <S2SV_StartBug> struct msghdr msg ; <S2SV_EndBug> char msg_control [ 128 ] ; <S2SV_StartBug> struct cmsghdr * cmsg ; <S2SV_EndBug> uint16_t orig_avp_len ; void * orig_avp_val ; * p = NULL ; if ( pkt_info ) { memset ( & msg , 0 , sizeof ( msg ) ) ; msg . msg_control = msg_control ; <S2SV_StartBug> msg . msg_controllen = 128 ; <S2SV_EndBug> n = recvmsg ( fd , & msg , MSG_PEEK ) ; if ( n < 0 ) { if ( errno == EAGAIN ) return - 1 ; log_error ( \"l2tp:<S2SV_blank>recvmsg:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; return 0 ; } for ( cmsg = CMSG_FIRSTHDR ( & msg ) ; cmsg != NULL ; cmsg = CMSG_NXTHDR ( & msg , cmsg ) ) { if ( cmsg -> cmsg_level == IPPROTO_IP && cmsg -> cmsg_type == IP_PKTINFO ) { memcpy ( pkt_info , CMSG_DATA ( cmsg ) , sizeof ( * pkt_info ) ) ; break ; } } } buf = mempool_alloc ( buf_pool ) ; if ( ! buf ) { log_emerg ( \"l2tp:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; return 0 ; } hdr = ( struct l2tp_hdr_t * ) buf ; ptr = ( uint8_t * ) ( hdr + 1 ) ; <S2SV_StartBug> n = recvfrom ( fd , buf , L2TP_MAX_PACKET_SIZE , 0 , & addr , & len ) ; <S2SV_EndBug> if ( n < 0 ) { mempool_free ( buf ) ; if ( errno == EAGAIN ) { return - 1 ; } else if ( errno == ECONNREFUSED ) { return - 2 ; } log_error ( \"l2tp:<S2SV_blank>recv:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; return 0 ; } <S2SV_StartBug> if ( n < 6 ) { <S2SV_EndBug> if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>short<S2SV_blank>packet<S2SV_blank>received<S2SV_blank>(%i/%zu)\\\\n\" , n , sizeof ( * hdr ) ) ; goto out_err_hdr ; } <S2SV_StartBug> if ( hdr -> T == 0 ) <S2SV_EndBug> goto out_err_hdr ; <S2SV_StartBug> if ( n < ntohs ( hdr -> length ) ) { <S2SV_EndBug> if ( conf_verbose ) <S2SV_StartBug> log_warn ( \"l2tp:<S2SV_blank>short<S2SV_blank>packet<S2SV_blank>received<S2SV_blank>(%i/%i)\\\\n\" , n , ntohs ( hdr -> length ) ) ; <S2SV_EndBug> goto out_err_hdr ; } <S2SV_StartBug> if ( hdr -> ver == 2 ) { <S2SV_EndBug> if ( hdr -> L == 0 ) { if ( conf_verbose ) <S2SV_StartBug> log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>message<S2SV_blank>received<S2SV_blank>(L=0)\\\\n\" ) ; <S2SV_EndBug> if ( ! conf_avp_permissive ) goto out_err_hdr ; } if ( hdr -> S == 0 ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>message<S2SV_blank>received<S2SV_blank>(S=0)\\\\n\" ) ; if ( ! conf_avp_permissive ) goto out_err_hdr ; } if ( hdr -> O == 1 ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>message<S2SV_blank>received<S2SV_blank>(O=1)\\\\n\" ) ; if ( ! conf_avp_permissive ) goto out_err_hdr ; } } else if ( hdr -> ver != 3 ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>%i<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\\\\n\" , hdr -> ver ) ; goto out_err_hdr ; } pack = mempool_alloc ( pack_pool ) ; if ( ! pack ) { log_emerg ( \"l2tp:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; goto out_err_hdr ; } memset ( pack , 0 , sizeof ( * pack ) ) ; INIT_LIST_HEAD ( & pack -> attrs ) ; memcpy ( & pack -> addr , & addr , sizeof ( addr ) ) ; memcpy ( & pack -> hdr , hdr , sizeof ( * hdr ) ) ; length = ntohs ( hdr -> length ) - sizeof ( * hdr ) ; while ( length ) { * ( uint16_t * ) ptr = ntohs ( * ( uint16_t * ) ptr ) ; avp = ( struct l2tp_avp_t * ) ptr ; <S2SV_StartBug> if ( avp -> length > length ) { <S2SV_EndBug> if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>avp<S2SV_blank>received<S2SV_blank>(exceeds<S2SV_blank>message<S2SV_blank>length)\\\\n\" ) ; goto out_err ; } if ( avp -> vendor ) goto skip ; da = l2tp_dict_find_attr_by_id ( ntohs ( avp -> type ) ) ; if ( ! da ) { <S2SV_StartBug> if ( conf_verbose ) <S2SV_EndBug> <S2SV_StartBug> log_warn ( \"l2tp:<S2SV_blank>unknown<S2SV_blank>avp<S2SV_blank>received<S2SV_blank>(type=%i,<S2SV_blank>M=%u)\\\\n\" , ntohs ( avp -> type ) , avp -> M ) ; <S2SV_EndBug> if ( avp -> M && ! conf_avp_permissive ) goto out_err ; } else { <S2SV_StartBug> if ( da -> M != - 1 && da -> M != avp -> M ) { <S2SV_EndBug> if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>avp<S2SV_blank>received<S2SV_blank>(type=%i,<S2SV_blank>M=%i,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>%i)\\\\n\" , ntohs ( avp -> type ) , avp -> M , da -> M ) ; if ( ! conf_avp_permissive ) goto out_err ; } <S2SV_StartBug> if ( da -> H != - 1 && da -> H != avp -> H ) { <S2SV_EndBug> if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>avp<S2SV_blank>received<S2SV_blank>(type=%i,<S2SV_blank>H=%i,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>%i)\\\\n\" , ntohs ( avp -> type ) , avp -> H , da -> H ) ; if ( ! conf_avp_permissive ) goto out_err ; } <S2SV_StartBug> if ( avp -> H ) { <S2SV_EndBug> if ( ! RV ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>avp<S2SV_blank>received<S2SV_blank>(type=%i,<S2SV_blank>H=1,<S2SV_blank>but<S2SV_blank>Random-Vector<S2SV_blank>is<S2SV_blank>not<S2SV_blank>received)\\\\n\" , ntohs ( avp -> type ) ) ; goto out_err ; } if ( secret == NULL || secret_len == 0 ) { log_error ( \"l2tp:<S2SV_blank>impossible<S2SV_blank>to<S2SV_blank>decode\" \"<S2SV_blank>hidden<S2SV_blank>avp<S2SV_blank>(type<S2SV_blank>%hu):<S2SV_blank>no\" \"<S2SV_blank>secret<S2SV_blank>set)\\\\n\" , ntohs ( avp -> type ) ) ; goto out_err ; } if ( decode_avp ( avp , RV , secret , secret_len ) < 0 ) goto out_err ; <S2SV_StartBug> } <S2SV_EndBug> attr = mempool_alloc ( attr_pool ) ; memset ( attr , 0 , sizeof ( * attr ) ) ; list_add_tail ( & attr -> entry , & pack -> attrs ) ; if ( avp -> H ) { orig_avp_len = ntohs ( * ( uint16_t * ) avp -> val ) + sizeof ( * avp ) ; orig_avp_val = avp -> val + sizeof ( uint16_t ) ; } else { <S2SV_StartBug> orig_avp_len = avp -> length ; <S2SV_EndBug> orig_avp_val = avp -> val ; } <S2SV_StartBug> attr -> attr = da ; <S2SV_EndBug> <S2SV_StartBug> attr -> M = avp -> M ; <S2SV_EndBug> attr -> H = 0 ; <S2SV_StartBug> attr -> length = orig_avp_len - sizeof ( * avp ) ; <S2SV_EndBug> if ( attr -> attr -> id == Random_Vector ) RV = attr ; switch ( da -> type ) { case ATTR_TYPE_INT16 : if ( orig_avp_len != sizeof ( * avp ) + 2 ) goto out_err_len ; attr -> val . uint16 = ntohs ( * ( uint16_t * ) orig_avp_val ) ; break ; case ATTR_TYPE_INT32 : if ( orig_avp_len != sizeof ( * avp ) + 4 ) goto out_err_len ; attr -> val . uint32 = ntohl ( * ( uint32_t * ) orig_avp_val ) ; break ; case ATTR_TYPE_INT64 : if ( orig_avp_len != sizeof ( * avp ) + 8 ) goto out_err_len ; attr -> val . uint64 = be64toh ( * ( uint64_t * ) orig_avp_val ) ; break ; case ATTR_TYPE_OCTETS : attr -> val . octets = _malloc ( attr -> length ) ; if ( ! attr -> val . octets ) goto out_err_mem ; memcpy ( attr -> val . octets , orig_avp_val , attr -> length ) ; break ; case ATTR_TYPE_STRING : attr -> val . string = _malloc ( attr -> length + 1 ) ; if ( ! attr -> val . string ) goto out_err_mem ; memcpy ( attr -> val . string , orig_avp_val , attr -> length ) ; attr -> val . string [ attr -> length ] = 0 ; break ; } } skip : <S2SV_StartBug> ptr += avp -> length ; <S2SV_EndBug> <S2SV_StartBug> length -= avp -> length ; <S2SV_EndBug> } * p = pack ; mempool_free ( buf ) ; return 0 ; out_err : l2tp_packet_free ( pack ) ; out_err_hdr : mempool_free ( buf ) ; return 0 ; out_err_len : if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>avp<S2SV_blank>received<S2SV_blank>(type=%i,<S2SV_blank>incorrect<S2SV_blank>length<S2SV_blank>%i)\\\\n\" , ntohs ( avp -> type ) , orig_avp_len ) ; goto out_err ; out_err_mem : log_emerg ( \"l2tp:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; goto out_err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> secret_len ) { struct l2tp_packet_t * pack <S2SV_ModEnd> ; struct l2tp_hdr_t <S2SV_ModStart> avp ; struct l2tp_attr_t * <S2SV_ModEnd> RV = NULL <S2SV_ModStart> RV = NULL <S2SV_ModEnd> ; struct sockaddr_in <S2SV_ModStart> addr ; socklen_t addr_len ; uint16_t orig_avp_len ; void * orig_avp_val ; uint8_t * buf , * ptr ; int n , length ; * p = NULL ; if ( pkt_info ) { <S2SV_ModEnd> struct msghdr msg <S2SV_ModStart> struct msghdr msg ; struct cmsghdr * cmsg <S2SV_ModStart> 128 ] ; <S2SV_ModEnd> memset ( & <S2SV_ModStart> . msg_controllen = sizeof ( msg_control ) <S2SV_ModEnd> ; n = <S2SV_ModStart> 1 ) ; addr_len = sizeof ( addr ) ; <S2SV_ModStart> addr , & addr_len <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( n < sizeof ( * hdr ) <S2SV_ModEnd> ) { if <S2SV_ModStart> out_err_hdr ; } hdr -> flags = ntohs ( hdr -> flags ) ; if ( ! ( hdr -> flags & L2TP_FLAG_T ) <S2SV_ModEnd> ) goto out_err_hdr <S2SV_ModStart> goto out_err_hdr ; if ( ! ( hdr -> flags & L2TP_FLAG_L ) ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>control<S2SV_blank>message<S2SV_blank>received<S2SV_blank>(L=0)\\\\n\" ) ; goto out_err_hdr ; } if ( ! ( hdr -> flags & L2TP_FLAG_S ) ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>control<S2SV_blank>message<S2SV_blank>received<S2SV_blank>(S=0)\\\\n\" ) ; goto out_err_hdr ; } switch ( hdr -> flags & L2TP_VER_MASK ) { case 2 : if ( hdr -> flags & L2TP_FLAG_O ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>control<S2SV_blank>message<S2SV_blank>received<S2SV_blank>(O=1)\\\\n\" ) ; goto out_err_hdr ; } break ; case 3 : break ; default : if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>%i<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\\\\n\" , hdr -> flags & L2TP_VER_MASK ) ; goto out_err_hdr ; } length = ntohs ( hdr -> length ) ; if ( length < sizeof ( * hdr ) ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>short<S2SV_blank>packet<S2SV_blank>received<S2SV_blank>(%i/%zu)\\\\n\" , length , sizeof ( * hdr ) ) ; goto out_err_hdr ; } else <S2SV_ModStart> ( n < length ) <S2SV_ModEnd> { if ( <S2SV_ModStart> , n , length ) <S2SV_ModEnd> ; goto out_err_hdr <S2SV_ModStart> out_err_hdr ; } pack = mempool_alloc ( pack_pool ) ; if ( ! pack ) { log_emerg ( \"l2tp:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; goto out_err_hdr ; } memset ( pack , 0 , sizeof ( * pack ) ) ; INIT_LIST_HEAD ( & pack -> attrs ) ; memcpy ( & pack -> addr , & addr , sizeof ( addr ) ) ; memcpy ( & pack -> hdr , hdr , sizeof ( * hdr ) ) ; length -= sizeof ( * hdr ) ; while ( length > 0 ) { struct l2tp_dict_attr_t * da ; struct l2tp_attr_t * attr ; uint16_t avp_len ; if ( length < sizeof ( * avp ) <S2SV_ModEnd> ) { if <S2SV_ModStart> ) log_warn ( \"l2tp:<S2SV_blank>short<S2SV_blank>avp<S2SV_blank>received\\\\n\" ) ; goto out_err ; } <S2SV_ModEnd> avp = ( <S2SV_ModStart> ) ptr ; avp -> flags = ntohs ( avp -> flags ) ; avp_len = avp -> flags & L2TP_AVP_LEN_MASK ; if ( avp_len < sizeof ( * avp ) ) { if ( conf_verbose ) log_warn ( \"l2tp:<S2SV_blank>short<S2SV_blank>avp<S2SV_blank>received\\\\n\" ) ; goto out_err ; } else if ( length < avp_len <S2SV_ModEnd> ) { if <S2SV_ModStart> ( conf_verbose ) { <S2SV_ModStart> type ) , ! ! ( avp -> flags & L2TP_AVP_FLAG_M ) ) ; } if ( ( avp -> flags & L2TP_AVP_FLAG_M ) <S2SV_ModEnd> && ! conf_avp_permissive <S2SV_ModStart> - 1 && ! <S2SV_ModStart> -> M != ! ( avp -> flags & L2TP_AVP_FLAG_M ) ) { if ( conf_verbose ) { log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>avp<S2SV_blank>received<S2SV_blank>(type=%i,<S2SV_blank>M=%i,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>%i)\\\\n\" , ntohs ( avp -> type ) , ! ! ( avp -> flags & L2TP_AVP_FLAG_M ) , da <S2SV_ModEnd> -> M ) <S2SV_ModStart> -> M ) ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> - 1 && ! <S2SV_ModStart> -> H != ! ( avp -> flags & L2TP_AVP_FLAG_H ) ) { if ( conf_verbose ) { log_warn ( \"l2tp:<S2SV_blank>incorrect<S2SV_blank>avp<S2SV_blank>received<S2SV_blank>(type=%i,<S2SV_blank>H=%i,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>%i)\\\\n\" , ntohs ( avp -> type ) , ! ! ( avp -> flags & L2TP_AVP_FLAG_H ) , da <S2SV_ModEnd> -> H ) <S2SV_ModStart> -> H ) ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> ( avp -> flags & L2TP_AVP_FLAG_H <S2SV_ModEnd> ) { if <S2SV_ModStart> goto out_err ; <S2SV_ModEnd> orig_avp_len = ntohs <S2SV_ModStart> { orig_avp_len = avp_len <S2SV_ModEnd> ; orig_avp_val = <S2SV_ModStart> ; } attr = mempool_alloc ( attr_pool ) ; memset ( attr , 0 , sizeof ( * attr ) ) ; attr <S2SV_ModStart> -> M = ! ! ( avp -> flags & L2TP_AVP_FLAG_M ) <S2SV_ModEnd> ; attr -> <S2SV_ModStart> ( * avp ) ; list_add_tail ( & attr -> entry , & pack -> attrs <S2SV_ModStart> : ptr += avp_len <S2SV_ModEnd> ; length -= <S2SV_ModStart> ; length -= avp_len <S2SV_ModEnd> ; } *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18079\n\n```\nCWE-476 static void i8042_stop ( struct serio * serio ) { struct i8042_port * port = serio -> port_data ; <S2SV_StartBug> port -> exists = false ; <S2SV_EndBug> synchronize_irq ( I8042_AUX_IRQ ) ; synchronize_irq ( I8042_KBD_IRQ ) ; <S2SV_StartBug> port -> serio = NULL ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> port_data ; spin_lock_irq ( & i8042_lock ) ; <S2SV_ModStart> exists = false ; port -> serio = NULL ; spin_unlock_irq ( & i8042_lock ) <S2SV_ModStart> I8042_KBD_IRQ ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6701\n\n```\nCWE-000 static ssize_t aio_setup_iocb ( struct kiocb * kiocb , bool compat ) { struct file * file = kiocb -> ki_filp ; ssize_t ret = 0 ; switch ( kiocb -> ki_opcode ) { case IOCB_CMD_PREAD : ret = - EBADF ; if ( unlikely ( ! ( file -> f_mode & FMODE_READ ) ) ) break ; ret = - EFAULT ; if ( unlikely ( ! access_ok ( VERIFY_WRITE , kiocb -> ki_buf , kiocb -> ki_left ) ) ) break ; <S2SV_StartBug> ret = security_file_permission ( file , MAY_READ ) ; <S2SV_EndBug> if ( unlikely ( ret ) ) break ; ret = aio_setup_single_vector ( kiocb ) ; if ( ret ) break ; ret = - EINVAL ; if ( file -> f_op -> aio_read ) kiocb -> ki_retry = aio_rw_vect_retry ; break ; case IOCB_CMD_PWRITE : ret = - EBADF ; if ( unlikely ( ! ( file -> f_mode & FMODE_WRITE ) ) ) break ; ret = - EFAULT ; if ( unlikely ( ! access_ok ( VERIFY_READ , kiocb -> ki_buf , kiocb -> ki_left ) ) ) break ; <S2SV_StartBug> ret = security_file_permission ( file , MAY_WRITE ) ; <S2SV_EndBug> if ( unlikely ( ret ) ) break ; ret = aio_setup_single_vector ( kiocb ) ; if ( ret ) break ; ret = - EINVAL ; if ( file -> f_op -> aio_write ) kiocb -> ki_retry = aio_rw_vect_retry ; break ; case IOCB_CMD_PREADV : ret = - EBADF ; if ( unlikely ( ! ( file -> f_mode & FMODE_READ ) ) ) break ; <S2SV_StartBug> ret = security_file_permission ( file , MAY_READ ) ; <S2SV_EndBug> if ( unlikely ( ret ) ) break ; ret = aio_setup_vectored_rw ( READ , kiocb , compat ) ; if ( ret ) break ; ret = - EINVAL ; if ( file -> f_op -> aio_read ) kiocb -> ki_retry = aio_rw_vect_retry ; break ; case IOCB_CMD_PWRITEV : ret = - EBADF ; if ( unlikely ( ! ( file -> f_mode & FMODE_WRITE ) ) ) break ; <S2SV_StartBug> ret = security_file_permission ( file , MAY_WRITE ) ; <S2SV_EndBug> if ( unlikely ( ret ) ) break ; ret = aio_setup_vectored_rw ( WRITE , kiocb , compat ) ; if ( ret ) break ; ret = - EINVAL ; if ( file -> f_op -> aio_write ) kiocb -> ki_retry = aio_rw_vect_retry ; break ; case IOCB_CMD_FDSYNC : ret = - EINVAL ; if ( file -> f_op -> aio_fsync ) kiocb -> ki_retry = aio_fdsync ; break ; case IOCB_CMD_FSYNC : ret = - EINVAL ; if ( file -> f_op -> aio_fsync ) kiocb -> ki_retry = aio_fsync ; break ; default : dprintk ( \"EINVAL:<S2SV_blank>io_submit:<S2SV_blank>no<S2SV_blank>operation<S2SV_blank>provided\\\\n\" ) ; ret = - EINVAL ; } if ( ! kiocb -> ki_retry ) return ret ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ret = aio_setup_single_vector ( READ , file , <S2SV_ModEnd> kiocb ) ; <S2SV_ModStart> ; ret = aio_setup_single_vector ( WRITE , file , <S2SV_ModEnd> kiocb ) ; <S2SV_ModStart> ; ret = <S2SV_ModEnd> aio_setup_vectored_rw ( READ <S2SV_ModStart> ; ret = <S2SV_ModEnd> aio_setup_vectored_rw ( WRITE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13030\n\n```\nCWE-125 void pim_print ( netdissect_options * ndo , register const u_char * bp , register u_int len , const u_char * bp2 ) { <S2SV_StartBug> register const u_char * ep ; <S2SV_EndBug> <S2SV_StartBug> register const struct pim * pim = ( const struct pim * ) bp ; <S2SV_EndBug> ep = ( const u_char * ) ndo -> ndo_snapend ; if ( bp >= ep ) return ; # ifdef notyet ND_TCHECK ( pim -> pim_rsv ) ; # endif <S2SV_StartBug> switch ( PIM_VER ( pim -> pim_typever ) ) { <S2SV_EndBug> case 2 : if ( ! ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"PIMv%u,<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , PIM_VER ( pim -> pim_typever ) , tok2str ( pimv2_type_values , \"Unknown<S2SV_blank>Type\" , PIM_TYPE ( pim -> pim_typever ) ) , len ) ) ; return ; } else { ND_PRINT ( ( ndo , \"PIMv%u,<S2SV_blank>length<S2SV_blank>%u\\\\n\\\\t%s\" , PIM_VER ( pim -> pim_typever ) , len , tok2str ( pimv2_type_values , \"Unknown<S2SV_blank>Type\" , PIM_TYPE ( pim -> pim_typever ) ) ) ) ; pimv2_print ( ndo , bp , len , bp2 ) ; } break ; default : ND_PRINT ( ( ndo , \"PIMv%u,<S2SV_blank>length<S2SV_blank>%u\" , PIM_VER ( pim -> pim_typever ) , len ) ) ; break ; } return ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { register const <S2SV_ModEnd> struct pim * <S2SV_ModStart> * ) bp <S2SV_ModEnd> ; # ifdef <S2SV_ModStart> ; # endif ND_TCHECK ( pim -> pim_typever ) ; <S2SV_ModStart> } return ; trunc : ND_PRINT ( ( ndo , \"[|pim]\" ) ) ; return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17806\n\n```\nCWE-787 <S2SV_StartBug> static int shash_no_setkey ( struct crypto_shash * tfm , const u8 * key , <S2SV_EndBug> unsigned int keylen ) { return - ENOSYS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> int shash_no_setkey (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-918(服务器端请求伪造(SSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7272\n\n```\nCWE-918 static inline char * parse_ip_address_ex ( const char * str , size_t str_len , int * portno , int get_err , zend_string * * err ) { char * colon ; char * host = NULL ; # ifdef HAVE_IPV6 <S2SV_StartBug> char * p ; <S2SV_EndBug> if ( * ( str ) == '[' && str_len > 1 ) { <S2SV_StartBug> p = memchr ( str + 1 , ']' , str_len - 2 ) ; <S2SV_EndBug> if ( ! p || * ( p + 1 ) != ':' ) { if ( get_err ) { * err = strpprintf ( 0 , \"Failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>IPv6<S2SV_blank>address<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ; } return NULL ; } <S2SV_StartBug> * portno = atoi ( p + 2 ) ; <S2SV_EndBug> return estrndup ( str + 1 , p - str - 1 ) ; } # endif if ( str_len ) { colon = memchr ( str , ':' , str_len - 1 ) ; } else { colon = NULL ; } if ( colon ) { <S2SV_StartBug> * portno = atoi ( colon + 1 ) ; <S2SV_EndBug> host = estrndup ( str , colon - str ) ; <S2SV_StartBug> } else { <S2SV_EndBug> if ( get_err ) { * err = strpprintf ( 0 , \"Failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>address<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ; } return NULL ; } <S2SV_StartBug> return host ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> # ifdef HAVE_IPV6 <S2SV_ModEnd> if ( * <S2SV_ModStart> 1 ) { char * <S2SV_ModStart> - 2 ) , * e = NULL <S2SV_ModStart> * portno = strtol <S2SV_ModEnd> ( p + <S2SV_ModStart> p + 2 , & e , 10 ) ; if ( e && * e ) { if ( get_err ) { * err = strpprintf ( 0 , \"Failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>address<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ; } return NULL ; } <S2SV_ModEnd> return estrndup ( <S2SV_ModStart> colon ) { char * e = NULL ; <S2SV_ModStart> * portno = strtol ( colon + 1 , & e , 10 ) ; if ( ! e || ! * e ) { return <S2SV_ModEnd> estrndup ( str <S2SV_ModStart> ) ; } } <S2SV_ModEnd> if ( get_err <S2SV_ModStart> NULL ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15165\n\n```\nCWE-20 static int read_bytes ( FILE * fp , void * buf , size_t bytes_to_read , int fail_on_eof , char * errbuf ) { size_t amt_read ; amt_read = fread ( buf , 1 , bytes_to_read , fp ) ; if ( amt_read != bytes_to_read ) { if ( ferror ( fp ) ) { pcap_fmt_errmsg_for_errno ( errbuf , PCAP_ERRBUF_SIZE , errno , \"error<S2SV_blank>reading<S2SV_blank>dump<S2SV_blank>file\" ) ; } else { if ( amt_read == 0 && ! fail_on_eof ) return ( 0 ) ; pcap_snprintf ( errbuf , PCAP_ERRBUF_SIZE , <S2SV_StartBug> \"truncated<S2SV_blank>dump<S2SV_blank>file;<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>read<S2SV_blank>%\" PRIsize \"<S2SV_blank>bytes,<S2SV_blank>only<S2SV_blank>got<S2SV_blank>%\" PRIsize , <S2SV_EndBug> bytes_to_read , amt_read ) ; } return ( - 1 ) ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , PCAP_ERRBUF_SIZE , \"truncated<S2SV_blank>pcapng<S2SV_blank>dump<S2SV_blank>file;<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>read<S2SV_blank>%\" <S2SV_ModEnd> PRIsize \"<S2SV_blank>bytes,<S2SV_blank>only<S2SV_blank>got<S2SV_blank>%\" PRIsize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4565\n\n```\nCWE-264 static ssize_t ib_uverbs_write ( struct file * filp , const char __user * buf , size_t count , loff_t * pos ) { struct ib_uverbs_file * file = filp -> private_data ; struct ib_device * ib_dev ; struct ib_uverbs_cmd_hdr hdr ; __u32 command ; __u32 flags ; int srcu_key ; ssize_t ret ; <S2SV_StartBug> if ( count < sizeof hdr ) <S2SV_EndBug> return - EINVAL ; if ( copy_from_user ( & hdr , buf , sizeof hdr ) ) return - EFAULT ; srcu_key = srcu_read_lock ( & file -> device -> disassociate_srcu ) ; ib_dev = srcu_dereference ( file -> device -> ib_dev , & file -> device -> disassociate_srcu ) ; if ( ! ib_dev ) { ret = - EIO ; goto out ; } if ( hdr . command & ~ ( __u32 ) ( IB_USER_VERBS_CMD_FLAGS_MASK | IB_USER_VERBS_CMD_COMMAND_MASK ) ) { ret = - EINVAL ; goto out ; } command = hdr . command & IB_USER_VERBS_CMD_COMMAND_MASK ; if ( verify_command_mask ( ib_dev , command ) ) { ret = - EOPNOTSUPP ; goto out ; } if ( ! file -> ucontext && command != IB_USER_VERBS_CMD_GET_CONTEXT ) { ret = - EINVAL ; goto out ; } flags = ( hdr . command & IB_USER_VERBS_CMD_FLAGS_MASK ) >> IB_USER_VERBS_CMD_FLAGS_SHIFT ; if ( ! flags ) { if ( command >= ARRAY_SIZE ( uverbs_cmd_table ) || ! uverbs_cmd_table [ command ] ) { ret = - EINVAL ; goto out ; } if ( hdr . in_words * 4 != count ) { ret = - EINVAL ; goto out ; } ret = uverbs_cmd_table [ command ] ( file , ib_dev , buf + sizeof ( hdr ) , hdr . in_words * 4 , hdr . out_words * 4 ) ; } else if ( flags == IB_USER_VERBS_CMD_FLAG_EXTENDED ) { struct ib_uverbs_ex_cmd_hdr ex_hdr ; struct ib_udata ucore ; struct ib_udata uhw ; size_t written_count = count ; if ( command >= ARRAY_SIZE ( uverbs_ex_cmd_table ) || ! uverbs_ex_cmd_table [ command ] ) { ret = - ENOSYS ; goto out ; } if ( ! file -> ucontext ) { ret = - EINVAL ; goto out ; } if ( count < ( sizeof ( hdr ) + sizeof ( ex_hdr ) ) ) { ret = - EINVAL ; goto out ; } if ( copy_from_user ( & ex_hdr , buf + sizeof ( hdr ) , sizeof ( ex_hdr ) ) ) { ret = - EFAULT ; goto out ; } count -= sizeof ( hdr ) + sizeof ( ex_hdr ) ; buf += sizeof ( hdr ) + sizeof ( ex_hdr ) ; if ( ( hdr . in_words + ex_hdr . provider_in_words ) * 8 != count ) { ret = - EINVAL ; goto out ; } if ( ex_hdr . cmd_hdr_reserved ) { ret = - EINVAL ; goto out ; } if ( ex_hdr . response ) { if ( ! hdr . out_words && ! ex_hdr . provider_out_words ) { ret = - EINVAL ; goto out ; } if ( ! access_ok ( VERIFY_WRITE , ( void __user * ) ( unsigned long ) ex_hdr . response , ( hdr . out_words + ex_hdr . provider_out_words ) * 8 ) ) { ret = - EFAULT ; goto out ; } } else { if ( hdr . out_words || ex_hdr . provider_out_words ) { ret = - EINVAL ; goto out ; } } INIT_UDATA_BUF_OR_NULL ( & ucore , buf , ( unsigned long ) ex_hdr . response , hdr . in_words * 8 , hdr . out_words * 8 ) ; INIT_UDATA_BUF_OR_NULL ( & uhw , buf + ucore . inlen , ( unsigned long ) ex_hdr . response + ucore . outlen , ex_hdr . provider_in_words * 8 , ex_hdr . provider_out_words * 8 ) ; ret = uverbs_ex_cmd_table [ command ] ( file , ib_dev , & ucore , & uhw ) ; if ( ! ret ) ret = written_count ; } else { ret = - ENOSYS ; } out : srcu_read_unlock ( & file -> device -> disassociate_srcu , srcu_key ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( WARN_ON_ONCE ( ! ib_safe_file_access ( filp ) ) ) return - EACCES ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 void vrrp_print_json ( void ) { FILE * file ; element e ; struct json_object * array ; if ( LIST_ISEMPTY ( vrrp_data -> vrrp ) ) return ; <S2SV_StartBug> file = fopen ( \"/tmp/keepalived.json\" , \"w\" ) ; <S2SV_EndBug> if ( ! file ) { log_message ( LOG_INFO , \"Can\\'t<S2SV_blank>open<S2SV_blank>/tmp/keepalived.json<S2SV_blank>(%d:<S2SV_blank>%s)\" , errno , strerror ( errno ) ) ; return ; } array = json_object_new_array ( ) ; for ( e = LIST_HEAD ( vrrp_data -> vrrp ) ; e ; ELEMENT_NEXT ( e ) ) { struct json_object * instance_json , * json_stats , * json_data , * vips , * evips , * track_ifp , * track_script ; # ifdef _HAVE_FIB_ROUTING_ struct json_object * vroutes , * vrules ; # endif element f ; vrrp_t * vrrp = ELEMENT_DATA ( e ) ; instance_json = json_object_new_object ( ) ; json_stats = json_object_new_object ( ) ; json_data = json_object_new_object ( ) ; vips = json_object_new_array ( ) ; evips = json_object_new_array ( ) ; track_ifp = json_object_new_array ( ) ; track_script = json_object_new_array ( ) ; # ifdef _HAVE_FIB_ROUTING_ vroutes = json_object_new_array ( ) ; vrules = json_object_new_array ( ) ; # endif json_object_object_add ( json_data , \"iname\" , json_object_new_string ( vrrp -> iname ) ) ; json_object_object_add ( json_data , \"dont_track_primary\" , json_object_new_int ( vrrp -> dont_track_primary ) ) ; json_object_object_add ( json_data , \"skip_check_adv_addr\" , json_object_new_int ( vrrp -> skip_check_adv_addr ) ) ; json_object_object_add ( json_data , \"strict_mode\" , json_object_new_int ( ( int ) vrrp -> strict_mode ) ) ; # ifdef _HAVE_VRRP_VMAC_ json_object_object_add ( json_data , \"vmac_ifname\" , json_object_new_string ( vrrp -> vmac_ifname ) ) ; # endif if ( ! LIST_ISEMPTY ( vrrp -> track_ifp ) ) { for ( f = LIST_HEAD ( vrrp -> track_ifp ) ; f ; ELEMENT_NEXT ( f ) ) { interface_t * ifp = ELEMENT_DATA ( f ) ; json_object_array_add ( track_ifp , json_object_new_string ( ifp -> ifname ) ) ; } } json_object_object_add ( json_data , \"track_ifp\" , track_ifp ) ; if ( ! LIST_ISEMPTY ( vrrp -> track_script ) ) { for ( f = LIST_HEAD ( vrrp -> track_script ) ; f ; ELEMENT_NEXT ( f ) ) { tracked_sc_t * tsc = ELEMENT_DATA ( f ) ; vrrp_script_t * vscript = tsc -> scr ; json_object_array_add ( track_script , json_object_new_string ( cmd_str ( & vscript -> script ) ) ) ; } } json_object_object_add ( json_data , \"track_script\" , track_script ) ; json_object_object_add ( json_data , \"ifp_ifname\" , json_object_new_string ( vrrp -> ifp -> ifname ) ) ; json_object_object_add ( json_data , \"master_priority\" , json_object_new_int ( vrrp -> master_priority ) ) ; json_object_object_add ( json_data , \"last_transition\" , json_object_new_double ( timeval_to_double ( & vrrp -> last_transition ) ) ) ; json_object_object_add ( json_data , \"garp_delay\" , json_object_new_double ( vrrp -> garp_delay / TIMER_HZ_FLOAT ) ) ; json_object_object_add ( json_data , \"garp_refresh\" , json_object_new_int ( ( int ) vrrp -> garp_refresh . tv_sec ) ) ; json_object_object_add ( json_data , \"garp_rep\" , json_object_new_int ( ( int ) vrrp -> garp_rep ) ) ; json_object_object_add ( json_data , \"garp_refresh_rep\" , json_object_new_int ( ( int ) vrrp -> garp_refresh_rep ) ) ; json_object_object_add ( json_data , \"garp_lower_prio_delay\" , json_object_new_int ( ( int ) ( vrrp -> garp_lower_prio_delay / TIMER_HZ ) ) ) ; json_object_object_add ( json_data , \"garp_lower_prio_rep\" , json_object_new_int ( ( int ) vrrp -> garp_lower_prio_rep ) ) ; json_object_object_add ( json_data , \"lower_prio_no_advert\" , json_object_new_int ( ( int ) vrrp -> lower_prio_no_advert ) ) ; json_object_object_add ( json_data , \"higher_prio_send_advert\" , json_object_new_int ( ( int ) vrrp -> higher_prio_send_advert ) ) ; json_object_object_add ( json_data , \"vrid\" , json_object_new_int ( vrrp -> vrid ) ) ; json_object_object_add ( json_data , \"base_priority\" , json_object_new_int ( vrrp -> base_priority ) ) ; json_object_object_add ( json_data , \"effective_priority\" , json_object_new_int ( vrrp -> effective_priority ) ) ; json_object_object_add ( json_data , \"vipset\" , json_object_new_boolean ( vrrp -> vipset ) ) ; if ( ! LIST_ISEMPTY ( vrrp -> vip ) ) { for ( f = LIST_HEAD ( vrrp -> vip ) ; f ; ELEMENT_NEXT ( f ) ) { ip_address_t * vip = ELEMENT_DATA ( f ) ; char ipaddr [ INET6_ADDRSTRLEN ] ; inet_ntop ( vrrp -> family , & ( vip -> u . sin . sin_addr . s_addr ) , ipaddr , INET6_ADDRSTRLEN ) ; json_object_array_add ( vips , json_object_new_string ( ipaddr ) ) ; } } json_object_object_add ( json_data , \"vips\" , vips ) ; if ( ! LIST_ISEMPTY ( vrrp -> evip ) ) { for ( f = LIST_HEAD ( vrrp -> evip ) ; f ; ELEMENT_NEXT ( f ) ) { ip_address_t * evip = ELEMENT_DATA ( f ) ; char ipaddr [ INET6_ADDRSTRLEN ] ; inet_ntop ( vrrp -> family , & ( evip -> u . sin . sin_addr . s_addr ) , ipaddr , INET6_ADDRSTRLEN ) ; json_object_array_add ( evips , json_object_new_string ( ipaddr ) ) ; } } json_object_object_add ( json_data , \"evips\" , evips ) ; json_object_object_add ( json_data , \"promote_secondaries\" , json_object_new_boolean ( vrrp -> promote_secondaries ) ) ; # ifdef _HAVE_FIB_ROUTING_ if ( ! LIST_ISEMPTY ( vrrp -> vroutes ) ) { for ( f = LIST_HEAD ( vrrp -> vroutes ) ; f ; ELEMENT_NEXT ( f ) ) { ip_route_t * route = ELEMENT_DATA ( f ) ; char * buf = MALLOC ( ROUTE_BUF_SIZE ) ; format_iproute ( route , buf , ROUTE_BUF_SIZE ) ; json_object_array_add ( vroutes , json_object_new_string ( buf ) ) ; } } json_object_object_add ( json_data , \"vroutes\" , vroutes ) ; if ( ! LIST_ISEMPTY ( vrrp -> vrules ) ) { for ( f = LIST_HEAD ( vrrp -> vrules ) ; f ; ELEMENT_NEXT ( f ) ) { ip_rule_t * rule = ELEMENT_DATA ( f ) ; char * buf = MALLOC ( RULE_BUF_SIZE ) ; format_iprule ( rule , buf , RULE_BUF_SIZE ) ; json_object_array_add ( vrules , json_object_new_string ( buf ) ) ; } } json_object_object_add ( json_data , \"vrules\" , vrules ) ; # endif json_object_object_add ( json_data , \"adver_int\" , json_object_new_double ( vrrp -> adver_int / TIMER_HZ_FLOAT ) ) ; json_object_object_add ( json_data , \"master_adver_int\" , json_object_new_double ( vrrp -> master_adver_int / TIMER_HZ_FLOAT ) ) ; json_object_object_add ( json_data , \"accept\" , json_object_new_int ( ( int ) vrrp -> accept ) ) ; json_object_object_add ( json_data , \"nopreempt\" , json_object_new_boolean ( vrrp -> nopreempt ) ) ; json_object_object_add ( json_data , \"preempt_delay\" , json_object_new_int ( ( int ) ( vrrp -> preempt_delay / TIMER_HZ ) ) ) ; json_object_object_add ( json_data , \"state\" , json_object_new_int ( vrrp -> state ) ) ; json_object_object_add ( json_data , \"wantstate\" , json_object_new_int ( vrrp -> wantstate ) ) ; json_object_object_add ( json_data , \"version\" , json_object_new_int ( vrrp -> version ) ) ; if ( vrrp -> script_backup ) json_object_object_add ( json_data , \"script_backup\" , json_object_new_string ( cmd_str ( vrrp -> script_backup ) ) ) ; if ( vrrp -> script_master ) json_object_object_add ( json_data , \"script_master\" , json_object_new_string ( cmd_str ( vrrp -> script_master ) ) ) ; if ( vrrp -> script_fault ) json_object_object_add ( json_data , \"script_fault\" , json_object_new_string ( cmd_str ( vrrp -> script_fault ) ) ) ; if ( vrrp -> script_stop ) json_object_object_add ( json_data , \"script_stop\" , json_object_new_string ( cmd_str ( vrrp -> script_stop ) ) ) ; if ( vrrp -> script ) json_object_object_add ( json_data , \"script\" , json_object_new_string ( cmd_str ( vrrp -> script ) ) ) ; if ( vrrp -> script_master_rx_lower_pri ) json_object_object_add ( json_data , \"script_master_rx_lower_pri\" , json_object_new_string ( cmd_str ( vrrp -> script_master_rx_lower_pri ) ) ) ; json_object_object_add ( json_data , \"smtp_alert\" , json_object_new_boolean ( vrrp -> smtp_alert ) ) ; # ifdef _WITH_VRRP_AUTH_ if ( vrrp -> auth_type ) { json_object_object_add ( json_data , \"auth_type\" , json_object_new_int ( vrrp -> auth_type ) ) ; if ( vrrp -> auth_type != VRRP_AUTH_AH ) { char auth_data [ sizeof ( vrrp -> auth_data ) + 1 ] ; memcpy ( auth_data , vrrp -> auth_data , sizeof ( vrrp -> auth_data ) ) ; auth_data [ sizeof ( vrrp -> auth_data ) ] = '\\\\0' ; json_object_object_add ( json_data , \"auth_data\" , json_object_new_string ( auth_data ) ) ; } } else json_object_object_add ( json_data , \"auth_type\" , json_object_new_int ( 0 ) ) ; # endif json_object_object_add ( json_stats , \"advert_rcvd\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> advert_rcvd ) ) ; json_object_object_add ( json_stats , \"advert_sent\" , json_object_new_int64 ( vrrp -> stats -> advert_sent ) ) ; json_object_object_add ( json_stats , \"become_master\" , json_object_new_int64 ( vrrp -> stats -> become_master ) ) ; json_object_object_add ( json_stats , \"release_master\" , json_object_new_int64 ( vrrp -> stats -> release_master ) ) ; json_object_object_add ( json_stats , \"packet_len_err\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> packet_len_err ) ) ; json_object_object_add ( json_stats , \"advert_interval_err\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> advert_interval_err ) ) ; json_object_object_add ( json_stats , \"ip_ttl_err\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> ip_ttl_err ) ) ; json_object_object_add ( json_stats , \"invalid_type_rcvd\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> invalid_type_rcvd ) ) ; json_object_object_add ( json_stats , \"addr_list_err\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> addr_list_err ) ) ; json_object_object_add ( json_stats , \"invalid_authtype\" , json_object_new_int64 ( vrrp -> stats -> invalid_authtype ) ) ; # ifdef _WITH_VRRP_AUTH_ json_object_object_add ( json_stats , \"authtype_mismatch\" , json_object_new_int64 ( vrrp -> stats -> authtype_mismatch ) ) ; json_object_object_add ( json_stats , \"auth_failure\" , json_object_new_int64 ( vrrp -> stats -> auth_failure ) ) ; # endif json_object_object_add ( json_stats , \"pri_zero_rcvd\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> pri_zero_rcvd ) ) ; json_object_object_add ( json_stats , \"pri_zero_sent\" , json_object_new_int64 ( ( int64_t ) vrrp -> stats -> pri_zero_sent ) ) ; json_object_object_add ( instance_json , \"data\" , json_data ) ; json_object_object_add ( instance_json , \"stats\" , json_stats ) ; json_object_array_add ( array , instance_json ) ; } fprintf ( file , \"%s\" , json_object_to_json_string ( array ) ) ; fclose ( file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; file = fopen_safe <S2SV_ModEnd> ( \"/tmp/keepalived.json\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void perf_event_read_event ( struct perf_event * event , struct task_struct * task ) { struct perf_output_handle handle ; struct perf_sample_data sample ; struct perf_read_event read_event = { . header = { . type = PERF_RECORD_READ , . misc = 0 , . size = sizeof ( read_event ) + event -> read_size , } , . pid = perf_event_pid ( event , task ) , . tid = perf_event_tid ( event , task ) , } ; int ret ; perf_event_header__init_id ( & read_event . header , & sample , event ) ; <S2SV_StartBug> ret = perf_output_begin ( & handle , event , read_event . header . size , 0 , 0 ) ; <S2SV_EndBug> if ( ret ) return ; perf_output_put ( & handle , read_event ) ; perf_output_read ( & handle , event ) ; perf_event__output_id_sample ( event , & handle , & sample ) ; perf_output_end ( & handle ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size , 0 <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void emulate_load_store_insn ( struct pt_regs * regs , void __user * addr , unsigned int __user * pc ) { union mips_instruction insn ; unsigned long value ; unsigned int res ; perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> __get_user ( insn . word , pc ) ; switch ( insn . i_format . opcode ) { case ll_op : case lld_op : case sc_op : case scd_op : case ldl_op : case ldr_op : case lwl_op : case lwr_op : case sdl_op : case sdr_op : case swl_op : case swr_op : case lb_op : case lbu_op : case sb_op : goto sigbus ; case lh_op : if ( ! access_ok ( VERIFY_READ , addr , 2 ) ) goto sigbus ; __asm__ __volatile__ ( \".set\\\\tnoat\\\\n\" # ifdef __BIG_ENDIAN \"1:\\\\tlb\\\\t%0,<S2SV_blank>0(%2)\\\\n\" \"2:\\\\tlbu\\\\t$1,<S2SV_blank>1(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tlb\\\\t%0,<S2SV_blank>1(%2)\\\\n\" \"2:\\\\tlbu\\\\t$1,<S2SV_blank>0(%2)\\\\n\\\\t\" # endif \"sll\\\\t%0,<S2SV_blank>0x8\\\\n\\\\t\" \"or\\\\t%0,<S2SV_blank>$1\\\\n\\\\t\" \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.set\\\\tat\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; case lw_op : if ( ! access_ok ( VERIFY_READ , addr , 4 ) ) goto sigbus ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tlwl\\\\t%0,<S2SV_blank>(%2)\\\\n\" \"2:\\\\tlwr\\\\t%0,<S2SV_blank>3(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tlwl\\\\t%0,<S2SV_blank>3(%2)\\\\n\" \"2:\\\\tlwr\\\\t%0,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; case lhu_op : if ( ! access_ok ( VERIFY_READ , addr , 2 ) ) goto sigbus ; __asm__ __volatile__ ( \".set\\\\tnoat\\\\n\" # ifdef __BIG_ENDIAN \"1:\\\\tlbu\\\\t%0,<S2SV_blank>0(%2)\\\\n\" \"2:\\\\tlbu\\\\t$1,<S2SV_blank>1(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tlbu\\\\t%0,<S2SV_blank>1(%2)\\\\n\" \"2:\\\\tlbu\\\\t$1,<S2SV_blank>0(%2)\\\\n\\\\t\" # endif \"sll\\\\t%0,<S2SV_blank>0x8\\\\n\\\\t\" \"or\\\\t%0,<S2SV_blank>$1\\\\n\\\\t\" \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.set\\\\tat\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; case lwu_op : # ifdef CONFIG_64BIT if ( ! access_ok ( VERIFY_READ , addr , 4 ) ) goto sigbus ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tlwl\\\\t%0,<S2SV_blank>(%2)\\\\n\" \"2:\\\\tlwr\\\\t%0,<S2SV_blank>3(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tlwl\\\\t%0,<S2SV_blank>3(%2)\\\\n\" \"2:\\\\tlwr\\\\t%0,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"dsll\\\\t%0,<S2SV_blank>%0,<S2SV_blank>32\\\\n\\\\t\" \"dsrl\\\\t%0,<S2SV_blank>%0,<S2SV_blank>32\\\\n\\\\t\" \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; # endif goto sigill ; case ld_op : # ifdef CONFIG_64BIT if ( ! access_ok ( VERIFY_READ , addr , 8 ) ) goto sigbus ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tldl\\\\t%0,<S2SV_blank>(%2)\\\\n\" \"2:\\\\tldr\\\\t%0,<S2SV_blank>7(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tldl\\\\t%0,<S2SV_blank>7(%2)\\\\n\" \"2:\\\\tldr\\\\t%0,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"li\\\\t%1,<S2SV_blank>0\\\\n\" \"3:\\\\t.section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%1,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=&r\" ( value ) , \"=r\" ( res ) : \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; regs -> regs [ insn . i_format . rt ] = value ; break ; # endif goto sigill ; case sh_op : if ( ! access_ok ( VERIFY_WRITE , addr , 2 ) ) goto sigbus ; value = regs -> regs [ insn . i_format . rt ] ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \".set\\\\tnoat\\\\n\" \"1:\\\\tsb\\\\t%1,<S2SV_blank>1(%2)\\\\n\\\\t\" \"srl\\\\t$1,<S2SV_blank>%1,<S2SV_blank>0x8\\\\n\" \"2:\\\\tsb\\\\t$1,<S2SV_blank>0(%2)\\\\n\\\\t\" \".set\\\\tat\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \".set\\\\tnoat\\\\n\" \"1:\\\\tsb\\\\t%1,<S2SV_blank>0(%2)\\\\n\\\\t\" \"srl\\\\t$1,%1,<S2SV_blank>0x8\\\\n\" \"2:\\\\tsb\\\\t$1,<S2SV_blank>1(%2)\\\\n\\\\t\" \".set\\\\tat\\\\n\\\\t\" # endif \"li\\\\t%0,<S2SV_blank>0\\\\n\" \"3:\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%0,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=r\" ( res ) : \"r\" ( value ) , \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; break ; case sw_op : if ( ! access_ok ( VERIFY_WRITE , addr , 4 ) ) goto sigbus ; value = regs -> regs [ insn . i_format . rt ] ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tswl\\\\t%1,(%2)\\\\n\" \"2:\\\\tswr\\\\t%1,<S2SV_blank>3(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tswl\\\\t%1,<S2SV_blank>3(%2)\\\\n\" \"2:\\\\tswr\\\\t%1,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"li\\\\t%0,<S2SV_blank>0\\\\n\" \"3:\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%0,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=r\" ( res ) : \"r\" ( value ) , \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; break ; case sd_op : # ifdef CONFIG_64BIT if ( ! access_ok ( VERIFY_WRITE , addr , 8 ) ) goto sigbus ; value = regs -> regs [ insn . i_format . rt ] ; __asm__ __volatile__ ( # ifdef __BIG_ENDIAN \"1:\\\\tsdl\\\\t%1,(%2)\\\\n\" \"2:\\\\tsdr\\\\t%1,<S2SV_blank>7(%2)\\\\n\\\\t\" # endif # ifdef __LITTLE_ENDIAN \"1:\\\\tsdl\\\\t%1,<S2SV_blank>7(%2)\\\\n\" \"2:\\\\tsdr\\\\t%1,<S2SV_blank>(%2)\\\\n\\\\t\" # endif \"li\\\\t%0,<S2SV_blank>0\\\\n\" \"3:\\\\n\\\\t\" \".section\\\\t.fixup,\\\\\"ax\\\\\"\\\\n\\\\t\" \"4:\\\\tli\\\\t%0,<S2SV_blank>%3\\\\n\\\\t\" \"j\\\\t3b\\\\n\\\\t\" \".previous\\\\n\\\\t\" \".section\\\\t__ex_table,\\\\\"a\\\\\"\\\\n\\\\t\" STR ( PTR ) \"\\\\t1b,<S2SV_blank>4b\\\\n\\\\t\" STR ( PTR ) \"\\\\t2b,<S2SV_blank>4b\\\\n\\\\t\" \".previous\" : \"=r\" ( res ) : \"r\" ( value ) , \"r\" ( addr ) , \"i\" ( - EFAULT ) ) ; if ( res ) goto fault ; compute_return_epc ( regs ) ; break ; # endif goto sigill ; case lwc1_op : case ldc1_op : case swc1_op : case sdc1_op : goto sigbus ; case lwc2_op : cu2_notifier_call_chain ( CU2_LWC2_OP , regs ) ; break ; case ldc2_op : cu2_notifier_call_chain ( CU2_LDC2_OP , regs ) ; break ; case swc2_op : cu2_notifier_call_chain ( CU2_SWC2_OP , regs ) ; break ; case sdc2_op : cu2_notifier_call_chain ( CU2_SDC2_OP , regs ) ; break ; default : goto sigill ; } # ifdef CONFIG_DEBUG_FS unaligned_instructions ++ ; # endif return ; fault : if ( fixup_exception ( regs ) ) return ; die_if_kernel ( \"Unhandled<S2SV_blank>kernel<S2SV_blank>unaligned<S2SV_blank>access\" , regs ) ; force_sig ( SIGSEGV , current ) ; return ; sigbus : die_if_kernel ( \"Unhandled<S2SV_blank>kernel<S2SV_blank>unaligned<S2SV_blank>access\" , regs ) ; force_sig ( SIGBUS , current ) ; return ; sigill : die_if_kernel ( \"Unhandled<S2SV_blank>kernel<S2SV_blank>unaligned<S2SV_blank>access<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>instruction\" , regs ) ; force_sig ( SIGILL , current ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static ssize_t ext4_ext_direct_IO ( int rw , struct kiocb * iocb , const struct iovec * iov , loff_t offset , unsigned long nr_segs ) { struct file * file = iocb -> ki_filp ; struct inode * inode = file -> f_mapping -> host ; ssize_t ret ; size_t count = iov_length ( iov , nr_segs ) ; loff_t final_size = offset + count ; if ( rw == WRITE && final_size <= inode -> i_size ) { iocb -> private = NULL ; EXT4_I ( inode ) -> cur_aio_dio = NULL ; if ( ! is_sync_kiocb ( iocb ) ) { <S2SV_StartBug> iocb -> private = ext4_init_io_end ( inode ) ; <S2SV_EndBug> if ( ! iocb -> private ) return - ENOMEM ; EXT4_I ( inode ) -> cur_aio_dio = iocb -> private ; } ret = blockdev_direct_IO ( rw , iocb , inode , inode -> i_sb -> s_bdev , iov , offset , nr_segs , ext4_get_block_write , ext4_end_io_dio ) ; if ( iocb -> private ) EXT4_I ( inode ) -> cur_aio_dio = NULL ; if ( ret != - EIOCBQUEUED && ret <= 0 && iocb -> private ) { ext4_free_io_end ( iocb -> private ) ; iocb -> private = NULL ; } else if ( ret > 0 && ext4_test_inode_state ( inode , EXT4_STATE_DIO_UNWRITTEN ) ) { int err ; err = ext4_convert_unwritten_extents ( inode , offset , ret ) ; if ( err < 0 ) ret = err ; ext4_clear_inode_state ( inode , EXT4_STATE_DIO_UNWRITTEN ) ; } return ret ; } return ext4_ind_direct_IO ( rw , iocb , iov , offset , nr_segs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext4_init_io_end ( inode , GFP_NOFS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6978\n\n```\nCWE-415 void gdImageGifCtx ( gdImagePtr im , gdIOCtxPtr out ) { <S2SV_StartBug> gdImagePtr pim = 0 , tim = im ; <S2SV_EndBug> int interlace , BitsPerPixel ; interlace = im -> interlace ; if ( im -> trueColor ) { <S2SV_StartBug> pim = gdImageCreatePaletteFromTrueColor ( im , 1 , 256 ) ; <S2SV_EndBug> if ( ! pim ) { return ; } tim = pim ; } BitsPerPixel = colorstobpp ( tim -> colorsTotal ) ; GIFEncode ( out , tim -> sx , tim -> sy , tim -> interlace , 0 , tim -> transparent , BitsPerPixel , tim -> red , tim -> green , tim -> blue , tim ) ; if ( pim ) { gdImageDestroy ( pim ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ) { _gdImageGifCtx <S2SV_ModEnd> ( im , <S2SV_ModStart> ( im , out <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9576\n\n```\nCWE-416 int blk_rq_map_user_iov ( struct request_queue * q , struct request * rq , struct rq_map_data * map_data , const struct iov_iter * iter , gfp_t gfp_mask ) { bool copy = false ; unsigned long align = q -> dma_pad_mask | queue_dma_alignment ( q ) ; struct bio * bio = NULL ; struct iov_iter i ; int ret ; <S2SV_StartBug> if ( map_data ) <S2SV_EndBug> copy = true ; else if ( iov_iter_alignment ( iter ) & align ) copy = true ; else if ( queue_virt_boundary ( q ) ) copy = queue_virt_boundary ( q ) & iov_iter_gap_alignment ( iter ) ; i = * iter ; do { ret = __blk_rq_map_user_iov ( rq , map_data , & i , gfp_mask , copy ) ; if ( ret ) goto unmap_rq ; if ( ! bio ) bio = rq -> bio ; } while ( iov_iter_count ( & i ) ) ; if ( ! bio_flagged ( bio , BIO_USER_MAPPED ) ) rq -> cmd_flags |= REQ_COPY_USER ; return 0 ; unmap_rq : __blk_rq_unmap_user ( bio ) ; <S2SV_StartBug> rq -> bio = NULL ; <S2SV_EndBug> return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! iter_is_iovec ( iter ) ) goto fail ; if ( <S2SV_ModStart> bio ) ; fail :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15306\n\n```\nCWE-476 int kvm_vm_ioctl_check_extension ( struct kvm * kvm , long ext ) { int r ; int hv_enabled = kvmppc_hv_ops ? 1 : 0 ; if ( kvm ) { hv_enabled = is_kvmppc_hv_enabled ( kvm ) ; } switch ( ext ) { # ifdef CONFIG_BOOKE case KVM_CAP_PPC_BOOKE_SREGS : case KVM_CAP_PPC_BOOKE_WATCHDOG : case KVM_CAP_PPC_EPR : # else case KVM_CAP_PPC_SEGSTATE : case KVM_CAP_PPC_HIOR : case KVM_CAP_PPC_PAPR : # endif case KVM_CAP_PPC_UNSET_IRQ : case KVM_CAP_PPC_IRQ_LEVEL : case KVM_CAP_ENABLE_CAP : case KVM_CAP_ENABLE_CAP_VM : case KVM_CAP_ONE_REG : case KVM_CAP_IOEVENTFD : case KVM_CAP_DEVICE_CTRL : case KVM_CAP_IMMEDIATE_EXIT : r = 1 ; break ; case KVM_CAP_PPC_PAIRED_SINGLES : case KVM_CAP_PPC_OSI : case KVM_CAP_PPC_GET_PVINFO : # if defined ( CONFIG_KVM_E500V2 ) || defined ( CONFIG_KVM_E500MC ) case KVM_CAP_SW_TLB : # endif r = ! hv_enabled ; break ; # ifdef CONFIG_KVM_MPIC case KVM_CAP_IRQ_MPIC : r = 1 ; break ; # endif # ifdef CONFIG_PPC_BOOK3S_64 case KVM_CAP_SPAPR_TCE : case KVM_CAP_SPAPR_TCE_64 : case KVM_CAP_SPAPR_TCE_VFIO : case KVM_CAP_PPC_RTAS : case KVM_CAP_PPC_FIXUP_HCALL : case KVM_CAP_PPC_ENABLE_HCALL : # ifdef CONFIG_KVM_XICS case KVM_CAP_IRQ_XICS : # endif r = 1 ; break ; case KVM_CAP_PPC_ALLOC_HTAB : r = hv_enabled ; break ; # endif # ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE case KVM_CAP_PPC_SMT : r = 0 ; if ( kvm ) { if ( kvm -> arch . emul_smt_mode > 1 ) r = kvm -> arch . emul_smt_mode ; else r = kvm -> arch . smt_mode ; } else if ( hv_enabled ) { if ( cpu_has_feature ( CPU_FTR_ARCH_300 ) ) r = 1 ; else r = threads_per_subcore ; } break ; case KVM_CAP_PPC_SMT_POSSIBLE : r = 1 ; if ( hv_enabled ) { if ( ! cpu_has_feature ( CPU_FTR_ARCH_300 ) ) r = ( ( threads_per_subcore << 1 ) - 1 ) ; else r = 8 | 4 | 2 | 1 ; } break ; case KVM_CAP_PPC_RMA : r = 0 ; break ; case KVM_CAP_PPC_HWRNG : r = kvmppc_hwrng_present ( ) ; break ; case KVM_CAP_PPC_MMU_RADIX : r = ! ! ( hv_enabled && radix_enabled ( ) ) ; break ; case KVM_CAP_PPC_MMU_HASH_V3 : r = ! ! ( hv_enabled && ! radix_enabled ( ) && cpu_has_feature ( CPU_FTR_ARCH_300 ) ) ; break ; # endif case KVM_CAP_SYNC_MMU : # ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE r = hv_enabled ; # elif defined ( KVM_ARCH_WANT_MMU_NOTIFIER ) r = 1 ; # else r = 0 ; # endif break ; # ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE case KVM_CAP_PPC_HTAB_FD : r = hv_enabled ; break ; # endif case KVM_CAP_NR_VCPUS : if ( hv_enabled ) r = num_present_cpus ( ) ; else r = num_online_cpus ( ) ; break ; case KVM_CAP_NR_MEMSLOTS : r = KVM_USER_MEM_SLOTS ; break ; case KVM_CAP_MAX_VCPUS : r = KVM_MAX_VCPUS ; break ; # ifdef CONFIG_PPC_BOOK3S_64 case KVM_CAP_PPC_GET_SMMU_INFO : r = 1 ; break ; case KVM_CAP_SPAPR_MULTITCE : r = 1 ; break ; case KVM_CAP_SPAPR_RESIZE_HPT : r = ! ! hv_enabled && ! cpu_has_feature ( CPU_FTR_ARCH_300 ) ; break ; # endif # ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE case KVM_CAP_PPC_FWNMI : r = hv_enabled ; break ; # endif case KVM_CAP_PPC_HTM : r = cpu_has_feature ( CPU_FTR_TM_COMP ) && <S2SV_StartBug> is_kvmppc_hv_enabled ( kvm ) ; <S2SV_EndBug> break ; default : r = 0 ; break ; } return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CPU_FTR_TM_COMP ) && hv_enabled <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14360\n\n```\nCWE-787 int nntp_add_group ( char * line , void * data ) { struct NntpServer * nserv = data ; struct NntpData * nntp_data = NULL ; <S2SV_StartBug> char group [ LONG_STRING ] ; <S2SV_EndBug> char desc [ HUGE_STRING ] = \"\" ; char mod ; anum_t first , last ; if ( ! nserv || ! line ) return 0 ; <S2SV_StartBug> if ( sscanf ( line , \"%s<S2SV_blank>\" ANUM \"<S2SV_blank>\" ANUM \"<S2SV_blank>%c<S2SV_blank>%[^\\\\n]\" , group , & last , & first , & mod , desc ) < 4 ) <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> nntp_data = nntp_data_find ( nserv , group ) ; nntp_data -> deleted = false ; nntp_data -> first_message = first ; nntp_data -> last_message = last ; nntp_data -> allowed = ( mod == 'y' ) || ( mod == 'm' ) ; mutt_str_replace ( & nntp_data -> desc , desc ) ; if ( nntp_data -> newsrc_ent || nntp_data -> last_cached ) nntp_group_unread_stat ( nntp_data ) ; else if ( nntp_data -> last_message && nntp_data -> first_message <= nntp_data -> last_message ) nntp_data -> unread = nntp_data -> last_message - nntp_data -> first_message + 1 ; else nntp_data -> unread = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ LONG_STRING ] = \"\" <S2SV_ModStart> ( line , \"%1023s<S2SV_blank>\" <S2SV_ModEnd> ANUM \"<S2SV_blank>\" ANUM <S2SV_ModStart> ANUM \"<S2SV_blank>\" ANUM \"<S2SV_blank>%c<S2SV_blank>%8191[^\\\\n]\" <S2SV_ModEnd> , group , <S2SV_ModStart> < 4 ) { mutt_debug ( 4 , \"Cannot<S2SV_blank>parse<S2SV_blank>server<S2SV_blank>line:<S2SV_blank>%s\\\\n\" , line ) ; <S2SV_ModStart> return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9907\n\n```\nCWE-20 static Image * ReadDDSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status , cubemap = MagickFalse , volume = MagickFalse , matte ; CompressionType compression ; DDSInfo dds_info ; DDSDecoder * decoder ; size_t n , num_images ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( ReadDDSInfo ( image , & dds_info ) != MagickTrue ) { ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP ) cubemap = MagickTrue ; if ( dds_info . ddscaps2 & DDSCAPS2_VOLUME && dds_info . depth > 0 ) volume = MagickTrue ; ( void ) SeekBlob ( image , 128 , SEEK_SET ) ; if ( dds_info . pixelformat . flags & DDPF_RGB ) { compression = NoCompression ; if ( dds_info . pixelformat . flags & DDPF_ALPHAPIXELS ) { matte = MagickTrue ; decoder = ReadUncompressedRGBA ; } else { matte = MagickTrue ; decoder = ReadUncompressedRGB ; } } else if ( dds_info . pixelformat . flags & DDPF_LUMINANCE ) { compression = NoCompression ; if ( dds_info . pixelformat . flags & DDPF_ALPHAPIXELS ) { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } else { matte = MagickFalse ; decoder = ReadUncompressedRGB ; } } else if ( dds_info . pixelformat . flags & DDPF_FOURCC ) { switch ( dds_info . pixelformat . fourcc ) { case FOURCC_DXT1 : { matte = MagickFalse ; compression = DXT1Compression ; decoder = ReadDXT1 ; break ; } case FOURCC_DXT3 : { matte = MagickTrue ; compression = DXT3Compression ; decoder = ReadDXT3 ; break ; } case FOURCC_DXT5 : { matte = MagickTrue ; compression = DXT5Compression ; decoder = ReadDXT5 ; break ; } default : { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } } } else { ThrowReaderException ( CorruptImageError , \"ImageTypeNotSupported\" ) ; } num_images = 1 ; if ( cubemap ) { num_images = 0 ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEX ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEX ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEY ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEY ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_POSITIVEZ ) num_images ++ ; if ( dds_info . ddscaps2 & DDSCAPS2_CUBEMAP_NEGATIVEZ ) num_images ++ ; } if ( volume ) num_images = dds_info . depth ; for ( n = 0 ; n < num_images ; n ++ ) { if ( n != 0 ) { <S2SV_StartBug> AcquireNextImage ( image_info , image ) ; <S2SV_EndBug> if ( GetNextImageInList ( image ) == ( Image * ) NULL ) return ( DestroyImageList ( image ) ) ; image = SyncNextImageInList ( image ) ; } image -> matte = matte ; image -> compression = compression ; image -> columns = dds_info . width ; image -> rows = dds_info . height ; image -> storage_class = DirectClass ; image -> endian = LSBEndian ; image -> depth = 8 ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( ( decoder ) ( image , & dds_info , exception ) != MagickTrue ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } } if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5331\n\n```\nCWE-119 bool radeon_atom_get_tv_timings ( struct radeon_device * rdev , int index , struct drm_display_mode * mode ) { struct radeon_mode_info * mode_info = & rdev -> mode_info ; ATOM_ANALOG_TV_INFO * tv_info ; ATOM_ANALOG_TV_INFO_V1_2 * tv_info_v1_2 ; ATOM_DTD_FORMAT * dtd_timings ; int data_index = GetIndexIntoMasterTable ( DATA , AnalogTV_Info ) ; u8 frev , crev ; u16 data_offset , misc ; if ( ! atom_parse_data_header ( mode_info -> atom_context , data_index , NULL , & frev , & crev , & data_offset ) ) return false ; switch ( crev ) { case 1 : tv_info = ( ATOM_ANALOG_TV_INFO * ) ( mode_info -> atom_context -> bios + data_offset ) ; <S2SV_StartBug> if ( index > MAX_SUPPORTED_TV_TIMING ) <S2SV_EndBug> return false ; mode -> crtc_htotal = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_Total ) ; mode -> crtc_hdisplay = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_Disp ) ; mode -> crtc_hsync_start = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_SyncStart ) ; mode -> crtc_hsync_end = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_SyncStart ) + le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_H_SyncWidth ) ; mode -> crtc_vtotal = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_Total ) ; mode -> crtc_vdisplay = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_Disp ) ; mode -> crtc_vsync_start = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_SyncStart ) ; mode -> crtc_vsync_end = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_SyncStart ) + le16_to_cpu ( tv_info -> aModeTimings [ index ] . usCRTC_V_SyncWidth ) ; mode -> flags = 0 ; misc = le16_to_cpu ( tv_info -> aModeTimings [ index ] . susModeMiscInfo . usAccess ) ; if ( misc & ATOM_VSYNC_POLARITY ) mode -> flags |= DRM_MODE_FLAG_NVSYNC ; if ( misc & ATOM_HSYNC_POLARITY ) mode -> flags |= DRM_MODE_FLAG_NHSYNC ; if ( misc & ATOM_COMPOSITESYNC ) mode -> flags |= DRM_MODE_FLAG_CSYNC ; if ( misc & ATOM_INTERLACE ) mode -> flags |= DRM_MODE_FLAG_INTERLACE ; if ( misc & ATOM_DOUBLE_CLOCK_MODE ) mode -> flags |= DRM_MODE_FLAG_DBLSCAN ; mode -> clock = le16_to_cpu ( tv_info -> aModeTimings [ index ] . usPixelClock ) * 10 ; if ( index == 1 ) { mode -> crtc_htotal -= 1 ; mode -> crtc_vtotal -= 1 ; } break ; case 2 : tv_info_v1_2 = ( ATOM_ANALOG_TV_INFO_V1_2 * ) ( mode_info -> atom_context -> bios + data_offset ) ; <S2SV_StartBug> if ( index > MAX_SUPPORTED_TV_TIMING_V1_2 ) <S2SV_EndBug> return false ; dtd_timings = & tv_info_v1_2 -> aModeTimings [ index ] ; mode -> crtc_htotal = le16_to_cpu ( dtd_timings -> usHActive ) + le16_to_cpu ( dtd_timings -> usHBlanking_Time ) ; mode -> crtc_hdisplay = le16_to_cpu ( dtd_timings -> usHActive ) ; mode -> crtc_hsync_start = le16_to_cpu ( dtd_timings -> usHActive ) + le16_to_cpu ( dtd_timings -> usHSyncOffset ) ; mode -> crtc_hsync_end = mode -> crtc_hsync_start + le16_to_cpu ( dtd_timings -> usHSyncWidth ) ; mode -> crtc_vtotal = le16_to_cpu ( dtd_timings -> usVActive ) + le16_to_cpu ( dtd_timings -> usVBlanking_Time ) ; mode -> crtc_vdisplay = le16_to_cpu ( dtd_timings -> usVActive ) ; mode -> crtc_vsync_start = le16_to_cpu ( dtd_timings -> usVActive ) + le16_to_cpu ( dtd_timings -> usVSyncOffset ) ; mode -> crtc_vsync_end = mode -> crtc_vsync_start + le16_to_cpu ( dtd_timings -> usVSyncWidth ) ; mode -> flags = 0 ; misc = le16_to_cpu ( dtd_timings -> susModeMiscInfo . usAccess ) ; if ( misc & ATOM_VSYNC_POLARITY ) mode -> flags |= DRM_MODE_FLAG_NVSYNC ; if ( misc & ATOM_HSYNC_POLARITY ) mode -> flags |= DRM_MODE_FLAG_NHSYNC ; if ( misc & ATOM_COMPOSITESYNC ) mode -> flags |= DRM_MODE_FLAG_CSYNC ; if ( misc & ATOM_INTERLACE ) mode -> flags |= DRM_MODE_FLAG_INTERLACE ; if ( misc & ATOM_DOUBLE_CLOCK_MODE ) mode -> flags |= DRM_MODE_FLAG_DBLSCAN ; mode -> clock = le16_to_cpu ( dtd_timings -> usPixClk ) * 10 ; break ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( index >= <S2SV_ModEnd> MAX_SUPPORTED_TV_TIMING ) return <S2SV_ModStart> if ( index >= <S2SV_ModEnd> MAX_SUPPORTED_TV_TIMING_V1_2 ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6974\n\n```\nCWE-362 static int kvm_ioctl_create_device ( struct kvm * kvm , struct kvm_create_device * cd ) { struct kvm_device_ops * ops = NULL ; struct kvm_device * dev ; bool test = cd -> flags & KVM_CREATE_DEVICE_TEST ; int ret ; if ( cd -> type >= ARRAY_SIZE ( kvm_device_ops_table ) ) return - ENODEV ; ops = kvm_device_ops_table [ cd -> type ] ; if ( ops == NULL ) return - ENODEV ; if ( test ) return 0 ; dev = kzalloc ( sizeof ( * dev ) , GFP_KERNEL ) ; if ( ! dev ) return - ENOMEM ; dev -> ops = ops ; dev -> kvm = kvm ; mutex_lock ( & kvm -> lock ) ; ret = ops -> create ( dev , cd -> type ) ; if ( ret < 0 ) { mutex_unlock ( & kvm -> lock ) ; kfree ( dev ) ; return ret ; } list_add ( & dev -> vm_node , & kvm -> devices ) ; mutex_unlock ( & kvm -> lock ) ; if ( ops -> init ) ops -> init ( dev ) ; <S2SV_StartBug> ret = anon_inode_getfd ( ops -> name , & kvm_device_fops , dev , O_RDWR | O_CLOEXEC ) ; <S2SV_EndBug> if ( ret < 0 ) { <S2SV_StartBug> mutex_lock ( & kvm -> lock ) ; <S2SV_EndBug> list_del ( & dev -> vm_node ) ; mutex_unlock ( & kvm -> lock ) ; ops -> destroy ( dev ) ; return ret ; } <S2SV_StartBug> kvm_get_kvm ( kvm ) ; <S2SV_EndBug> cd -> fd = ret ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) ; kvm_get_kvm ( kvm ) ; <S2SV_ModStart> 0 ) { kvm_put_kvm ( kvm ) ; <S2SV_ModStart> ret ; } <S2SV_ModEnd> cd -> fd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void multiframe_quality_enhance_block ( int blksize , int qcurr , int qprev , unsigned char * y , unsigned char * u , unsigned char * v , int y_stride , int uv_stride , unsigned char * yd , unsigned char * ud , unsigned char * vd , int yd_stride , int uvd_stride ) { static const unsigned char VP8_ZEROS [ 16 ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 } ; int uvblksize = blksize >> 1 ; int qdiff = qcurr - qprev ; int i ; unsigned char * up ; unsigned char * udp ; unsigned char * vp ; unsigned char * vdp ; unsigned int act , actd , sad , usad , vsad , sse , thr , thrsq , actrisk ; if ( blksize == 16 ) { <S2SV_StartBug> actd = ( vp8_variance16x16 ( yd , yd_stride , VP8_ZEROS , 0 , & sse ) + 128 ) >> 8 ; <S2SV_EndBug> <S2SV_StartBug> act = ( vp8_variance16x16 ( y , y_stride , VP8_ZEROS , 0 , & sse ) + 128 ) >> 8 ; <S2SV_EndBug> # ifdef USE_SSD <S2SV_StartBug> sad = ( vp8_variance16x16 ( y , y_stride , yd , yd_stride , & sse ) ) ; <S2SV_EndBug> sad = ( sse + 128 ) >> 8 ; usad = ( vp8_variance8x8 ( u , uv_stride , ud , uvd_stride , & sse ) ) ; usad = ( sse + 32 ) >> 6 ; <S2SV_StartBug> vsad = ( vp8_variance8x8 ( v , uv_stride , vd , uvd_stride , & sse ) ) ; <S2SV_EndBug> vsad = ( sse + 32 ) >> 6 ; # else sad = ( vp8_sad16x16 ( y , y_stride , yd , yd_stride , UINT_MAX ) + 128 ) >> 8 ; usad = ( vp8_sad8x8 ( u , uv_stride , ud , uvd_stride , UINT_MAX ) + 32 ) >> 6 ; vsad = ( vp8_sad8x8 ( v , uv_stride , vd , uvd_stride , UINT_MAX ) + 32 ) >> 6 ; # endif } else { actd = ( vp8_variance8x8 ( yd , yd_stride , VP8_ZEROS , 0 , & sse ) + 32 ) >> 6 ; <S2SV_StartBug> act = ( vp8_variance8x8 ( y , y_stride , VP8_ZEROS , 0 , & sse ) + 32 ) >> 6 ; <S2SV_EndBug> # ifdef USE_SSD <S2SV_StartBug> sad = ( vp8_variance8x8 ( y , y_stride , yd , yd_stride , & sse ) ) ; <S2SV_EndBug> sad = ( sse + 32 ) >> 6 ; <S2SV_StartBug> usad = ( vp8_variance4x4 ( u , uv_stride , ud , uvd_stride , & sse ) ) ; <S2SV_EndBug> usad = ( sse + 8 ) >> 4 ; <S2SV_StartBug> vsad = ( vp8_variance4x4 ( v , uv_stride , vd , uvd_stride , & sse ) ) ; <S2SV_EndBug> vsad = ( sse + 8 ) >> 4 ; # else sad = ( vp8_sad8x8 ( y , y_stride , yd , yd_stride , UINT_MAX ) + 32 ) >> 6 ; usad = ( vp8_sad4x4 ( u , uv_stride , ud , uvd_stride , UINT_MAX ) + 8 ) >> 4 ; vsad = ( vp8_sad4x4 ( v , uv_stride , vd , uvd_stride , UINT_MAX ) + 8 ) >> 4 ; # endif } actrisk = ( actd > act * 5 ) ; thr = ( qdiff >> 4 ) ; while ( actd >>= 1 ) thr ++ ; while ( qprev >>= 2 ) thr ++ ; # ifdef USE_SSD thrsq = thr * thr ; if ( sad < thrsq && 4 * usad < thrsq && 4 * vsad < thrsq && ! actrisk ) # else if ( sad < thr && 2 * usad < thr && 2 * vsad < thr && ! actrisk ) # endif { int ifactor ; # ifdef USE_SSD sad = int_sqrt ( sad ) ; # endif ifactor = ( sad << MFQE_PRECISION ) / thr ; ifactor >>= ( qdiff >> 5 ) ; if ( ifactor ) { apply_ifactor ( y , y_stride , yd , yd_stride , u , v , uv_stride , ud , vd , uvd_stride , blksize , ifactor ) ; } } else { if ( blksize == 16 ) { vp8_copy_mem16x16 ( y , y_stride , yd , yd_stride ) ; vp8_copy_mem8x8 ( u , uv_stride , ud , uvd_stride ) ; vp8_copy_mem8x8 ( v , uv_stride , vd , uvd_stride ) ; } else { vp8_copy_mem8x8 ( y , y_stride , yd , yd_stride ) ; for ( up = u , udp = ud , i = 0 ; i < uvblksize ; ++ i , up += uv_stride , udp += uvd_stride ) <S2SV_StartBug> vpx_memcpy ( udp , up , uvblksize ) ; <S2SV_EndBug> for ( vp = v , vdp = vd , i = 0 ; i < uvblksize ; ++ i , vp += uv_stride , vdp += uvd_stride ) <S2SV_StartBug> vpx_memcpy ( vdp , vp , uvblksize ) ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> actd = ( vpx_variance16x16 <S2SV_ModEnd> ( yd , <S2SV_ModStart> act = ( vpx_variance16x16 <S2SV_ModEnd> ( y , <S2SV_ModStart> # ifdef USE_SSD vpx_variance16x16 ( y , y_stride , yd , yd_stride , & sse ) ; <S2SV_ModStart> sad = ( sse + 128 ) >> 8 ; vpx_variance8x8 ( u , uv_stride , ud , uvd_stride , & sse ) ; usad = ( sse + 32 ) >> 6 ; vpx_variance8x8 ( v , uv_stride , vd , uvd_stride , & sse ) ; vsad = ( sse + 32 ) >> 6 ; # else sad = ( vpx_sad16x16 <S2SV_ModEnd> ( y , <S2SV_ModStart> yd , yd_stride ) + 128 ) >> 8 ; usad = ( vpx_sad8x8 ( u , uv_stride , ud , uvd_stride ) + 32 ) >> 6 ; vsad = ( vpx_sad8x8 ( v , uv_stride , vd , uvd_stride ) + 32 ) >> 6 ; # endif } else { actd = ( vpx_variance8x8 ( yd , yd_stride , VP8_ZEROS , 0 <S2SV_ModStart> & sse ) <S2SV_ModEnd> + 32 ) <S2SV_ModStart> >> 6 ; <S2SV_ModEnd> act = ( <S2SV_ModStart> act = ( vpx_variance8x8 <S2SV_ModEnd> ( y , <S2SV_ModStart> # ifdef USE_SSD vpx_variance8x8 ( y , y_stride , yd , yd_stride , & sse ) ; <S2SV_ModStart> sad = ( sse + 32 ) >> 6 ; vpx_variance4x4 ( u , uv_stride , ud , uvd_stride , & sse ) ; usad = ( sse + 8 ) >> 4 ; vpx_variance4x4 ( v , uv_stride , vd , uvd_stride , & sse ) ; vsad = ( sse + 8 ) >> 4 ; # else sad = ( vpx_sad8x8 <S2SV_ModEnd> ( y , <S2SV_ModStart> yd , yd_stride ) <S2SV_ModEnd> + 32 ) <S2SV_ModStart> usad = ( vpx_sad4x4 <S2SV_ModEnd> ( u , <S2SV_ModStart> ud , uvd_stride ) <S2SV_ModEnd> + 8 ) <S2SV_ModStart> vsad = ( vpx_sad4x4 <S2SV_ModEnd> ( v , <S2SV_ModStart> vd , uvd_stride <S2SV_ModEnd> ) + 8 <S2SV_ModStart> += uvd_stride ) memcpy <S2SV_ModEnd> ( udp , <S2SV_ModStart> += uvd_stride ) memcpy <S2SV_ModEnd> ( vdp ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11095\n\n```\nCWE-125 static int update_write_order_info ( rdpContext * context , wStream * s , ORDER_INFO * orderInfo , size_t offset ) { size_t position ; WINPR_UNUSED ( context ) ; position = Stream_GetPosition ( s ) ; Stream_SetPosition ( s , offset ) ; Stream_Write_UINT8 ( s , orderInfo -> controlFlags ) ; if ( orderInfo -> controlFlags & ORDER_TYPE_CHANGE ) Stream_Write_UINT8 ( s , orderInfo -> orderType ) ; update_write_field_flags ( s , orderInfo -> fieldFlags , orderInfo -> controlFlags , <S2SV_StartBug> PRIMARY_DRAWING_ORDER_FIELD_BYTES [ orderInfo -> orderType ] ) ; <S2SV_EndBug> update_write_bounds ( s , orderInfo ) ; Stream_SetPosition ( s , position ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> controlFlags , get_primary_drawing_order_field_bytes ( <S2SV_ModEnd> orderInfo -> orderType <S2SV_ModStart> orderInfo -> orderType , NULL ) <S2SV_ModEnd> ) ; update_write_bounds\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19050\n\n```\nCWE-401 int crypto_reportstat ( struct sk_buff * in_skb , struct nlmsghdr * in_nlh , struct nlattr * * attrs ) { struct net * net = sock_net ( in_skb -> sk ) ; struct crypto_user_alg * p = nlmsg_data ( in_nlh ) ; struct crypto_alg * alg ; struct sk_buff * skb ; struct crypto_dump_info info ; int err ; if ( ! null_terminated ( p -> cru_name ) || ! null_terminated ( p -> cru_driver_name ) ) return - EINVAL ; alg = crypto_alg_match ( p , 0 ) ; if ( ! alg ) return - ENOENT ; err = - ENOMEM ; skb = nlmsg_new ( NLMSG_DEFAULT_SIZE , GFP_ATOMIC ) ; if ( ! skb ) goto drop_alg ; info . in_skb = in_skb ; info . out_skb = skb ; info . nlmsg_seq = in_nlh -> nlmsg_seq ; info . nlmsg_flags = 0 ; err = crypto_reportstat_alg ( alg , & info ) ; drop_alg : crypto_mod_put ( alg ) ; if ( err ) <S2SV_StartBug> return err ; <S2SV_EndBug> return nlmsg_unicast ( net -> crypto_nlsk , skb , NETLINK_CB ( in_skb ) . portid ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( err ) { kfree_skb ( skb ) ; return err ; } <S2SV_ModEnd> return nlmsg_unicast (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int unix_stream_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock_iocb * siocb = kiocb_to_siocb ( iocb ) ; struct scm_cookie tmp_scm ; struct sock * sk = sock -> sk ; struct unix_sock * u = unix_sk ( sk ) ; struct sockaddr_un * sunaddr = msg -> msg_name ; int copied = 0 ; int check_creds = 0 ; int target ; int err = 0 ; long timeo ; int skip ; err = - EINVAL ; if ( sk -> sk_state != TCP_ESTABLISHED ) goto out ; err = - EOPNOTSUPP ; if ( flags & MSG_OOB ) goto out ; target = sock_rcvlowat ( sk , flags & MSG_WAITALL , size ) ; timeo = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> if ( ! siocb -> scm ) { siocb -> scm = & tmp_scm ; memset ( & tmp_scm , 0 , sizeof ( tmp_scm ) ) ; } err = mutex_lock_interruptible ( & u -> readlock ) ; if ( err ) { err = sock_intr_errno ( timeo ) ; goto out ; } do { int chunk ; struct sk_buff * skb , * last ; unix_state_lock ( sk ) ; last = skb = skb_peek ( & sk -> sk_receive_queue ) ; again : if ( skb == NULL ) { unix_sk ( sk ) -> recursion_level = 0 ; if ( copied >= target ) goto unlock ; err = sock_error ( sk ) ; if ( err ) goto unlock ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) goto unlock ; unix_state_unlock ( sk ) ; err = - EAGAIN ; if ( ! timeo ) break ; mutex_unlock ( & u -> readlock ) ; timeo = unix_stream_data_wait ( sk , timeo , last ) ; if ( signal_pending ( current ) || mutex_lock_interruptible ( & u -> readlock ) ) { err = sock_intr_errno ( timeo ) ; goto out ; } continue ; unlock : unix_state_unlock ( sk ) ; break ; } skip = sk_peek_offset ( sk , flags ) ; while ( skip >= unix_skb_len ( skb ) ) { skip -= unix_skb_len ( skb ) ; last = skb ; skb = skb_peek_next ( skb , & sk -> sk_receive_queue ) ; if ( ! skb ) goto again ; } unix_state_unlock ( sk ) ; if ( check_creds ) { if ( ( UNIXCB ( skb ) . pid != siocb -> scm -> pid ) || ! uid_eq ( UNIXCB ( skb ) . uid , siocb -> scm -> creds . uid ) || ! gid_eq ( UNIXCB ( skb ) . gid , siocb -> scm -> creds . gid ) ) break ; } else if ( test_bit ( SOCK_PASSCRED , & sock -> flags ) ) { scm_set_cred ( siocb -> scm , UNIXCB ( skb ) . pid , UNIXCB ( skb ) . uid , UNIXCB ( skb ) . gid ) ; check_creds = 1 ; } if ( sunaddr ) { unix_copy_addr ( msg , skb -> sk ) ; sunaddr = NULL ; } chunk = min_t ( unsigned int , unix_skb_len ( skb ) - skip , size ) ; if ( skb_copy_datagram_iovec ( skb , UNIXCB ( skb ) . consumed + skip , msg -> msg_iov , chunk ) ) { if ( copied == 0 ) copied = - EFAULT ; break ; } copied += chunk ; size -= chunk ; if ( ! ( flags & MSG_PEEK ) ) { UNIXCB ( skb ) . consumed += chunk ; sk_peek_offset_bwd ( sk , chunk ) ; if ( UNIXCB ( skb ) . fp ) unix_detach_fds ( siocb -> scm , skb ) ; if ( unix_skb_len ( skb ) ) break ; skb_unlink ( skb , & sk -> sk_receive_queue ) ; consume_skb ( skb ) ; if ( siocb -> scm -> fp ) break ; } else { if ( UNIXCB ( skb ) . fp ) siocb -> scm -> fp = scm_fp_dup ( UNIXCB ( skb ) . fp ) ; sk_peek_offset_fwd ( sk , chunk ) ; break ; } } while ( size ) ; mutex_unlock ( & u -> readlock ) ; scm_recv ( sock , msg , siocb -> scm , flags ) ; out : return copied ? : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MSG_DONTWAIT ) ; <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20911\n\n```\nCWE-835 void dwg_free_object ( Dwg_Object * obj ) { int error = 0 ; long unsigned int j ; Dwg_Data * dwg ; Bit_Chain * dat = & pdat ; if ( obj && obj -> parent ) { dwg = obj -> parent ; dat -> version = dwg -> header . version ; } else return ; if ( obj -> type == DWG_TYPE_FREED || obj -> tio . object == NULL ) return ; dat -> from_version = dat -> version ; if ( obj -> supertype == DWG_SUPERTYPE_UNKNOWN ) goto unhandled ; switch ( obj -> type ) { case DWG_TYPE_TEXT : dwg_free_TEXT ( dat , obj ) ; break ; case DWG_TYPE_ATTRIB : dwg_free_ATTRIB ( dat , obj ) ; break ; case DWG_TYPE_ATTDEF : dwg_free_ATTDEF ( dat , obj ) ; break ; case DWG_TYPE_BLOCK : dwg_free_BLOCK ( dat , obj ) ; break ; case DWG_TYPE_ENDBLK : dwg_free_ENDBLK ( dat , obj ) ; break ; case DWG_TYPE_SEQEND : dwg_free_SEQEND ( dat , obj ) ; break ; case DWG_TYPE_INSERT : dwg_free_INSERT ( dat , obj ) ; break ; case DWG_TYPE_MINSERT : dwg_free_MINSERT ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_2D : dwg_free_VERTEX_2D ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_3D : dwg_free_VERTEX_3D ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_MESH : dwg_free_VERTEX_MESH ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_PFACE : dwg_free_VERTEX_PFACE ( dat , obj ) ; break ; case DWG_TYPE_VERTEX_PFACE_FACE : dwg_free_VERTEX_PFACE_FACE ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_2D : dwg_free_POLYLINE_2D ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_3D : dwg_free_POLYLINE_3D ( dat , obj ) ; break ; case DWG_TYPE_ARC : dwg_free_ARC ( dat , obj ) ; break ; case DWG_TYPE_CIRCLE : dwg_free_CIRCLE ( dat , obj ) ; break ; case DWG_TYPE_LINE : dwg_free_LINE ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ORDINATE : dwg_free_DIMENSION_ORDINATE ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_LINEAR : dwg_free_DIMENSION_LINEAR ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ALIGNED : dwg_free_DIMENSION_ALIGNED ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ANG3PT : dwg_free_DIMENSION_ANG3PT ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_ANG2LN : dwg_free_DIMENSION_ANG2LN ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_RADIUS : dwg_free_DIMENSION_RADIUS ( dat , obj ) ; break ; case DWG_TYPE_DIMENSION_DIAMETER : dwg_free_DIMENSION_DIAMETER ( dat , obj ) ; break ; case DWG_TYPE_POINT : dwg_free_POINT ( dat , obj ) ; break ; case DWG_TYPE__3DFACE : dwg_free__3DFACE ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_PFACE : dwg_free_POLYLINE_PFACE ( dat , obj ) ; break ; case DWG_TYPE_POLYLINE_MESH : dwg_free_POLYLINE_MESH ( dat , obj ) ; break ; case DWG_TYPE_SOLID : dwg_free_SOLID ( dat , obj ) ; break ; case DWG_TYPE_TRACE : dwg_free_TRACE ( dat , obj ) ; break ; case DWG_TYPE_SHAPE : dwg_free_SHAPE ( dat , obj ) ; break ; case DWG_TYPE_VIEWPORT : dwg_free_VIEWPORT ( dat , obj ) ; break ; case DWG_TYPE_ELLIPSE : dwg_free_ELLIPSE ( dat , obj ) ; break ; case DWG_TYPE_SPLINE : dwg_free_SPLINE ( dat , obj ) ; break ; case DWG_TYPE_REGION : dwg_free_REGION ( dat , obj ) ; break ; case DWG_TYPE__3DSOLID : dwg_free__3DSOLID ( dat , obj ) ; break ; case DWG_TYPE_BODY : dwg_free_BODY ( dat , obj ) ; break ; case DWG_TYPE_RAY : dwg_free_RAY ( dat , obj ) ; break ; case DWG_TYPE_XLINE : dwg_free_XLINE ( dat , obj ) ; break ; case DWG_TYPE_DICTIONARY : dwg_free_DICTIONARY ( dat , obj ) ; break ; case DWG_TYPE_MTEXT : dwg_free_MTEXT ( dat , obj ) ; break ; case DWG_TYPE_LEADER : dwg_free_LEADER ( dat , obj ) ; break ; case DWG_TYPE_TOLERANCE : dwg_free_TOLERANCE ( dat , obj ) ; break ; case DWG_TYPE_MLINE : dwg_free_MLINE ( dat , obj ) ; break ; case DWG_TYPE_BLOCK_CONTROL : dwg_free_BLOCK_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_BLOCK_HEADER : dwg_free_BLOCK_HEADER ( dat , obj ) ; break ; case DWG_TYPE_LAYER_CONTROL : dwg_free_LAYER_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_LAYER : dwg_free_LAYER ( dat , obj ) ; break ; case DWG_TYPE_STYLE_CONTROL : dwg_free_STYLE_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_STYLE : dwg_free_STYLE ( dat , obj ) ; break ; case DWG_TYPE_LTYPE_CONTROL : dwg_free_LTYPE_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_LTYPE : dwg_free_LTYPE ( dat , obj ) ; break ; case DWG_TYPE_VIEW_CONTROL : dwg_free_VIEW_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_VIEW : dwg_free_VIEW ( dat , obj ) ; break ; case DWG_TYPE_UCS_CONTROL : dwg_free_UCS_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_UCS : dwg_free_UCS ( dat , obj ) ; break ; case DWG_TYPE_VPORT_CONTROL : dwg_free_VPORT_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_VPORT : dwg_free_VPORT ( dat , obj ) ; break ; case DWG_TYPE_APPID_CONTROL : dwg_free_APPID_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_APPID : dwg_free_APPID ( dat , obj ) ; break ; case DWG_TYPE_DIMSTYLE_CONTROL : dwg_free_DIMSTYLE_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_DIMSTYLE : dwg_free_DIMSTYLE ( dat , obj ) ; break ; case DWG_TYPE_VPORT_ENTITY_CONTROL : dwg_free_VPORT_ENTITY_CONTROL ( dat , obj ) ; break ; case DWG_TYPE_VPORT_ENTITY_HEADER : dwg_free_VPORT_ENTITY_HEADER ( dat , obj ) ; break ; case DWG_TYPE_GROUP : dwg_free_GROUP ( dat , obj ) ; break ; case DWG_TYPE_MLINESTYLE : dwg_free_MLINESTYLE ( dat , obj ) ; break ; case DWG_TYPE_OLE2FRAME : dwg_free_OLE2FRAME ( dat , obj ) ; break ; case DWG_TYPE_DUMMY : dwg_free_DUMMY ( dat , obj ) ; break ; case DWG_TYPE_LONG_TRANSACTION : dwg_free_LONG_TRANSACTION ( dat , obj ) ; break ; case DWG_TYPE_LWPOLYLINE : dwg_free_LWPOLYLINE ( dat , obj ) ; break ; case DWG_TYPE_HATCH : dwg_free_HATCH ( dat , obj ) ; break ; case DWG_TYPE_XRECORD : dwg_free_XRECORD ( dat , obj ) ; break ; case DWG_TYPE_PLACEHOLDER : dwg_free_PLACEHOLDER ( dat , obj ) ; break ; case DWG_TYPE_OLEFRAME : dwg_free_OLEFRAME ( dat , obj ) ; break ; # ifdef DEBUG_VBA_PROJECT case DWG_TYPE_VBA_PROJECT : dwg_free_VBA_PROJECT ( dat , obj ) ; break ; # endif case DWG_TYPE_LAYOUT : dwg_free_LAYOUT ( dat , obj ) ; break ; case DWG_TYPE_PROXY_ENTITY : dwg_free_PROXY_ENTITY ( dat , obj ) ; break ; case DWG_TYPE_PROXY_OBJECT : dwg_free_PROXY_OBJECT ( dat , obj ) ; break ; default : if ( obj -> type == obj -> parent -> layout_type ) { SINCE ( R_13 ) { dwg_free_LAYOUT ( dat , obj ) ; } } else if ( ( error = dwg_free_variable_type ( obj -> parent , obj ) ) & DWG_ERR_UNHANDLEDCLASS ) { <S2SV_StartBug> int is_entity ; <S2SV_EndBug> int i ; Dwg_Class * klass ; unhandled : is_entity = 0 ; i = obj -> type - 500 ; klass = NULL ; dwg = obj -> parent ; if ( dwg -> dwg_class && i >= 0 && i < ( int ) dwg -> num_classes ) { klass = & dwg -> dwg_class [ i ] ; is_entity = klass ? dwg_class_is_entity ( klass ) : 0 ; } <S2SV_StartBug> if ( obj -> fixedtype == DWG_TYPE_TABLE ) <S2SV_EndBug> { dwg_free_UNKNOWN_ENT ( dat , obj ) ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> else if ( obj -> fixedtype == DWG_TYPE_DATATABLE ) <S2SV_EndBug> { dwg_free_UNKNOWN_OBJ ( dat , obj ) ; <S2SV_StartBug> } <S2SV_EndBug> else if ( klass && ! is_entity ) { dwg_free_UNKNOWN_OBJ ( dat , obj ) ; } else if ( klass && is_entity ) { dwg_free_UNKNOWN_ENT ( dat , obj ) ; } else { FREE_IF ( obj -> tio . unknown ) ; } } } if ( dwg -> opts & DWG_OPTS_INDXF ) FREE_IF ( obj -> dxfname ) ; obj -> type = DWG_TYPE_FREED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> DWG_ERR_UNHANDLEDCLASS ) { unhandled : <S2SV_ModEnd> if ( obj <S2SV_ModStart> -> fixedtype == DWG_TYPE_UNKNOWN_ENT ) <S2SV_ModEnd> dwg_free_UNKNOWN_ENT ( dat <S2SV_ModStart> obj ) ; <S2SV_ModEnd> else if ( <S2SV_ModStart> -> fixedtype == DWG_TYPE_UNKNOWN_OBJ ) <S2SV_ModEnd> dwg_free_UNKNOWN_OBJ ( dat <S2SV_ModStart> obj ) ; <S2SV_ModEnd> } } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2831\n\n```\nCWE-119 static char * get_pid_environ_val ( pid_t pid , char * val ) { <S2SV_StartBug> char temp [ 500 ] ; <S2SV_EndBug> int i = 0 ; int foundit = 0 ; FILE * fp ; sprintf ( temp , \"/proc/%d/environ\" , pid ) ; fp = fopen ( temp , \"r\" ) ; if ( fp == NULL ) return NULL ; for ( ; ; ) { <S2SV_StartBug> temp [ i ] = fgetc ( fp ) ; <S2SV_EndBug> if ( foundit == 1 && ( temp [ i ] == 0 || temp [ i ] == '\\\\0' || temp [ i ] == EOF ) ) { char * ret ; temp [ i ] = 0 ; ret = malloc ( strlen ( temp ) + 10 ) ; sprintf ( ret , \"%s\" , temp ) ; fclose ( fp ) ; return ret ; } switch ( temp [ i ] ) { case EOF : fclose ( fp ) ; return NULL ; case '=' : temp [ i ] = 0 ; if ( ! strcmp ( temp , val ) ) { foundit = 1 ; } i = 0 ; break ; case '\\\\0' : i = 0 ; break ; default : i ++ ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { int temp_size = 500 ; char * temp = malloc ( temp_size ) <S2SV_ModEnd> ; int i <S2SV_ModStart> ; ) { if ( i >= temp_size ) { temp_size *= 2 ; temp = realloc ( temp , temp_size ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static int encode_open_downgrade ( struct xdr_stream * xdr , const struct nfs_closeargs * arg ) { __be32 * p ; RESERVE_SPACE ( 4 + NFS4_STATEID_SIZE + 4 ) ; WRITE32 ( OP_OPEN_DOWNGRADE ) ; WRITEMEM ( arg -> stateid -> data , NFS4_STATEID_SIZE ) ; WRITE32 ( arg -> seqid -> sequence -> counter ) ; <S2SV_StartBug> encode_share_access ( xdr , arg -> open_flags ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , arg -> fmode <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3417\n\n```\nCWE-000 void ff_h264_free_tables ( H264Context * h , int free_rbsp ) { int i ; H264Context * hx ; av_freep ( & h -> intra4x4_pred_mode ) ; av_freep ( & h -> chroma_pred_mode_table ) ; av_freep ( & h -> cbp_table ) ; av_freep ( & h -> mvd_table [ 0 ] ) ; av_freep ( & h -> mvd_table [ 1 ] ) ; av_freep ( & h -> direct_table ) ; av_freep ( & h -> non_zero_count ) ; av_freep ( & h -> slice_table_base ) ; h -> slice_table = NULL ; av_freep ( & h -> list_counts ) ; av_freep ( & h -> mb2b_xy ) ; av_freep ( & h -> mb2br_xy ) ; av_buffer_pool_uninit ( & h -> qscale_table_pool ) ; av_buffer_pool_uninit ( & h -> mb_type_pool ) ; av_buffer_pool_uninit ( & h -> motion_val_pool ) ; av_buffer_pool_uninit ( & h -> ref_index_pool ) ; if ( free_rbsp && h -> DPB ) { for ( i = 0 ; i < H264_MAX_PICTURE_COUNT ; i ++ ) ff_h264_unref_picture ( h , & h -> DPB [ i ] ) ; <S2SV_StartBug> av_freep ( & h -> DPB ) ; <S2SV_EndBug> } else if ( h -> DPB ) { for ( i = 0 ; i < H264_MAX_PICTURE_COUNT ; i ++ ) h -> DPB [ i ] . needs_realloc = 1 ; } h -> cur_pic_ptr = NULL ; for ( i = 0 ; i < H264_MAX_THREADS ; i ++ ) { hx = h -> thread_context [ i ] ; if ( ! hx ) continue ; av_freep ( & hx -> top_borders [ 1 ] ) ; av_freep ( & hx -> top_borders [ 0 ] ) ; av_freep ( & hx -> bipred_scratchpad ) ; av_freep ( & hx -> edge_emu_buffer ) ; av_freep ( & hx -> dc_val_base ) ; av_freep ( & hx -> er . mb_index2xy ) ; av_freep ( & hx -> er . error_status_table ) ; av_freep ( & hx -> er . er_temp_buffer ) ; av_freep ( & hx -> er . mbintra_table ) ; av_freep ( & hx -> er . mbskip_table ) ; if ( free_rbsp ) { av_freep ( & hx -> rbsp_buffer [ 1 ] ) ; av_freep ( & hx -> rbsp_buffer [ 0 ] ) ; hx -> rbsp_buffer_size [ 0 ] = 0 ; hx -> rbsp_buffer_size [ 1 ] = 0 ; } if ( i ) av_freep ( & h -> thread_context [ i ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; memset ( h -> delayed_pic , 0 , sizeof ( h -> delayed_pic ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 static enum hrtimer_restart posix_timer_fn ( struct hrtimer * timer ) { struct k_itimer * timr ; unsigned long flags ; int si_private = 0 ; enum hrtimer_restart ret = HRTIMER_NORESTART ; timr = container_of ( timer , struct k_itimer , it . real . timer ) ; spin_lock_irqsave ( & timr -> it_lock , flags ) ; timr -> it_active = 0 ; if ( timr -> it_interval != 0 ) si_private = ++ timr -> it_requeue_pending ; if ( posix_timer_event ( timr , si_private ) ) { if ( timr -> it_interval != 0 ) { ktime_t now = hrtimer_cb_get_time ( timer ) ; # ifdef CONFIG_HIGH_RES_TIMERS { ktime_t kj = NSEC_PER_SEC / HZ ; if ( timr -> it_interval < kj ) now = ktime_add ( now , kj ) ; } # endif <S2SV_StartBug> timr -> it_overrun += ( unsigned int ) <S2SV_EndBug> hrtimer_forward ( timer , now , timr -> it_interval ) ; ret = HRTIMER_RESTART ; ++ timr -> it_requeue_pending ; timr -> it_active = 1 ; } } unlock_timer ( timr , flags ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> it_overrun += <S2SV_ModEnd> hrtimer_forward ( timer\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3520\n\n```\nCWE-287 static int unix_stream_sendmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct sock * sk = sock -> sk ; struct sock * other = NULL ; int err , size ; struct sk_buff * skb ; int sent = 0 ; struct scm_cookie tmp_scm ; bool fds_sent = false ; int max_level ; if ( NULL == siocb -> scm ) siocb -> scm = & tmp_scm ; wait_for_unix_gc ( ) ; <S2SV_StartBug> err = scm_send ( sock , msg , siocb -> scm ) ; <S2SV_EndBug> if ( err < 0 ) return err ; err = - EOPNOTSUPP ; if ( msg -> msg_flags & MSG_OOB ) goto out_err ; if ( msg -> msg_namelen ) { err = sk -> sk_state == TCP_ESTABLISHED ? - EISCONN : - EOPNOTSUPP ; goto out_err ; } else { err = - ENOTCONN ; other = unix_peer ( sk ) ; if ( ! other ) goto out_err ; } if ( sk -> sk_shutdown & SEND_SHUTDOWN ) goto pipe_err ; while ( sent < len ) { size = len - sent ; if ( size > ( ( sk -> sk_sndbuf >> 1 ) - 64 ) ) size = ( sk -> sk_sndbuf >> 1 ) - 64 ; if ( size > SKB_MAX_ALLOC ) size = SKB_MAX_ALLOC ; skb = sock_alloc_send_skb ( sk , size , msg -> msg_flags & MSG_DONTWAIT , & err ) ; if ( skb == NULL ) goto out_err ; size = min_t ( int , size , skb_tailroom ( skb ) ) ; err = unix_scm_to_skb ( siocb -> scm , skb , ! fds_sent ) ; if ( err < 0 ) { kfree_skb ( skb ) ; goto out_err ; } max_level = err + 1 ; fds_sent = true ; err = memcpy_fromiovec ( skb_put ( skb , size ) , msg -> msg_iov , size ) ; if ( err ) { kfree_skb ( skb ) ; goto out_err ; } unix_state_lock ( other ) ; if ( sock_flag ( other , SOCK_DEAD ) || ( other -> sk_shutdown & RCV_SHUTDOWN ) ) goto pipe_err_free ; maybe_add_creds ( skb , sock , other ) ; skb_queue_tail ( & other -> sk_receive_queue , skb ) ; if ( max_level > unix_sk ( other ) -> recursion_level ) unix_sk ( other ) -> recursion_level = max_level ; unix_state_unlock ( other ) ; other -> sk_data_ready ( other , size ) ; sent += size ; } scm_destroy ( siocb -> scm ) ; siocb -> scm = NULL ; return sent ; pipe_err_free : unix_state_unlock ( other ) ; kfree_skb ( skb ) ; pipe_err : if ( sent == 0 && ! ( msg -> msg_flags & MSG_NOSIGNAL ) ) send_sig ( SIGPIPE , current , 0 ) ; err = - EPIPE ; out_err : scm_destroy ( siocb -> scm ) ; siocb -> scm = NULL ; return sent ? : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> siocb -> scm , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1421\n\n```\nCWE-000 void sctp_assoc_update ( struct sctp_association * asoc , struct sctp_association * new ) { struct sctp_transport * trans ; struct list_head * pos , * temp ; asoc -> c = new -> c ; asoc -> peer . rwnd = new -> peer . rwnd ; asoc -> peer . sack_needed = new -> peer . sack_needed ; asoc -> peer . auth_capable = new -> peer . auth_capable ; asoc -> peer . i = new -> peer . i ; sctp_tsnmap_init ( & asoc -> peer . tsn_map , SCTP_TSN_MAP_INITIAL , asoc -> peer . i . initial_tsn , GFP_ATOMIC ) ; list_for_each_safe ( pos , temp , & asoc -> peer . transport_addr_list ) { trans = list_entry ( pos , struct sctp_transport , transports ) ; if ( ! sctp_assoc_lookup_paddr ( new , & trans -> ipaddr ) ) { sctp_assoc_rm_peer ( asoc , trans ) ; continue ; } if ( asoc -> state >= SCTP_STATE_ESTABLISHED ) sctp_transport_reset ( trans ) ; } if ( asoc -> state >= SCTP_STATE_ESTABLISHED ) { asoc -> next_tsn = new -> next_tsn ; asoc -> ctsn_ack_point = new -> ctsn_ack_point ; asoc -> adv_peer_ack_point = new -> adv_peer_ack_point ; sctp_ssnmap_clear ( asoc -> ssnmap ) ; sctp_ulpq_flush ( & asoc -> ulpq ) ; asoc -> overall_error_count = 0 ; } else { list_for_each_entry ( trans , & new -> peer . transport_addr_list , transports ) { if ( ! sctp_assoc_lookup_paddr ( asoc , & trans -> ipaddr ) ) sctp_assoc_add_peer ( asoc , & trans -> ipaddr , GFP_ATOMIC , trans -> state ) ; } asoc -> ctsn_ack_point = asoc -> next_tsn - 1 ; asoc -> adv_peer_ack_point = asoc -> ctsn_ack_point ; if ( ! asoc -> ssnmap ) { asoc -> ssnmap = new -> ssnmap ; new -> ssnmap = NULL ; } if ( ! asoc -> assoc_id ) { sctp_assoc_set_id ( asoc , GFP_ATOMIC ) ; } } kfree ( asoc -> peer . peer_random ) ; asoc -> peer . peer_random = new -> peer . peer_random ; new -> peer . peer_random = NULL ; kfree ( asoc -> peer . peer_chunks ) ; asoc -> peer . peer_chunks = new -> peer . peer_chunks ; new -> peer . peer_chunks = NULL ; kfree ( asoc -> peer . peer_hmacs ) ; asoc -> peer . peer_hmacs = new -> peer . peer_hmacs ; new -> peer . peer_hmacs = NULL ; <S2SV_StartBug> sctp_auth_key_put ( asoc -> asoc_shared_key ) ; <S2SV_EndBug> sctp_auth_asoc_init_active_key ( asoc , GFP_ATOMIC ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; <S2SV_ModEnd> sctp_auth_asoc_init_active_key ( asoc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27675\n\n```\nCWE-362 static int set_evtchn_to_irq ( evtchn_port_t evtchn , unsigned int irq ) { unsigned row ; unsigned col ; if ( evtchn >= xen_evtchn_max_channels ( ) ) return - EINVAL ; row = EVTCHN_ROW ( evtchn ) ; col = EVTCHN_COL ( evtchn ) ; if ( evtchn_to_irq [ row ] == NULL ) { if ( irq == - 1 ) return 0 ; evtchn_to_irq [ row ] = ( int * ) get_zeroed_page ( GFP_KERNEL ) ; if ( evtchn_to_irq [ row ] == NULL ) return - ENOMEM ; clear_evtchn_to_irq_row ( row ) ; } <S2SV_StartBug> evtchn_to_irq [ row ] [ col ] = irq ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } WRITE_ONCE ( <S2SV_ModStart> [ col ] , irq ) <S2SV_ModEnd> ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1915\n\n```\nCWE-611 void * create_directory_config ( apr_pool_t * mp , char * path ) { directory_config * dcfg = ( directory_config * ) apr_pcalloc ( mp , sizeof ( directory_config ) ) ; if ( dcfg == NULL ) return NULL ; # ifdef DEBUG_CONF ap_log_perror ( APLOG_MARK , APLOG_STARTUP | APLOG_NOERRNO , 0 , mp , \"Created<S2SV_blank>directory<S2SV_blank>config<S2SV_blank>%pp<S2SV_blank>path<S2SV_blank>%s\" , dcfg , path ) ; # endif dcfg -> mp = mp ; dcfg -> is_enabled = NOT_SET ; dcfg -> reqbody_access = NOT_SET ; dcfg -> reqintercept_oe = NOT_SET ; dcfg -> reqbody_buffering = NOT_SET ; dcfg -> reqbody_inmemory_limit = NOT_SET ; dcfg -> reqbody_limit = NOT_SET ; dcfg -> reqbody_no_files_limit = NOT_SET ; dcfg -> resbody_access = NOT_SET ; dcfg -> debuglog_name = NOT_SET_P ; dcfg -> debuglog_level = NOT_SET ; dcfg -> debuglog_fd = NOT_SET_P ; dcfg -> of_limit = NOT_SET ; dcfg -> if_limit_action = NOT_SET ; dcfg -> of_limit_action = NOT_SET ; dcfg -> of_mime_types = NOT_SET_P ; dcfg -> of_mime_types_cleared = NOT_SET ; dcfg -> cookie_format = NOT_SET ; dcfg -> argument_separator = NOT_SET ; dcfg -> cookiev0_separator = NOT_SET_P ; dcfg -> rule_inheritance = NOT_SET ; dcfg -> rule_exceptions = apr_array_make ( mp , 16 , sizeof ( rule_exception * ) ) ; dcfg -> hash_method = apr_array_make ( mp , 16 , sizeof ( hash_method * ) ) ; dcfg -> auditlog_flag = NOT_SET ; dcfg -> auditlog_type = NOT_SET ; dcfg -> max_rule_time = NOT_SET ; dcfg -> auditlog_dirperms = NOT_SET ; dcfg -> auditlog_fileperms = NOT_SET ; dcfg -> auditlog_name = NOT_SET_P ; dcfg -> auditlog2_name = NOT_SET_P ; dcfg -> auditlog_fd = NOT_SET_P ; dcfg -> auditlog2_fd = NOT_SET_P ; dcfg -> auditlog_storage_dir = NOT_SET_P ; dcfg -> auditlog_parts = NOT_SET_P ; dcfg -> auditlog_relevant_regex = NOT_SET_P ; dcfg -> ruleset = NULL ; dcfg -> tmp_dir = NOT_SET_P ; dcfg -> upload_dir = NOT_SET_P ; dcfg -> upload_keep_files = NOT_SET ; dcfg -> upload_validates_files = NOT_SET ; dcfg -> upload_filemode = NOT_SET ; dcfg -> upload_file_limit = NOT_SET ; dcfg -> tmp_chain_starter = NULL ; dcfg -> tmp_default_actionset = NULL ; dcfg -> tmp_rule_placeholders = NULL ; dcfg -> data_dir = NOT_SET_P ; dcfg -> webappid = NOT_SET_P ; dcfg -> sensor_id = NOT_SET_P ; dcfg -> httpBlkey = NOT_SET_P ; dcfg -> content_injection_enabled = NOT_SET ; dcfg -> stream_inbody_inspection = NOT_SET ; dcfg -> stream_outbody_inspection = NOT_SET ; dcfg -> geo = NOT_SET_P ; dcfg -> gsb = NOT_SET_P ; dcfg -> u_map = NOT_SET_P ; dcfg -> cache_trans = NOT_SET ; dcfg -> cache_trans_incremental = NOT_SET ; dcfg -> cache_trans_min = NOT_SET ; dcfg -> cache_trans_max = NOT_SET ; dcfg -> cache_trans_maxitems = NOT_SET ; dcfg -> rule_id_htab = apr_hash_make ( mp ) ; dcfg -> component_signatures = apr_array_make ( mp , 16 , sizeof ( char * ) ) ; dcfg -> request_encoding = NOT_SET_P ; dcfg -> disable_backend_compression = NOT_SET ; dcfg -> col_timeout = NOT_SET ; dcfg -> crypto_key = NOT_SET_P ; dcfg -> crypto_key_len = NOT_SET ; dcfg -> crypto_key_add = NOT_SET ; dcfg -> crypto_param_name = NOT_SET_P ; dcfg -> hash_is_enabled = NOT_SET ; dcfg -> hash_enforcement = NOT_SET ; dcfg -> crypto_hash_href_rx = NOT_SET ; dcfg -> crypto_hash_faction_rx = NOT_SET ; dcfg -> crypto_hash_location_rx = NOT_SET ; dcfg -> crypto_hash_iframesrc_rx = NOT_SET ; dcfg -> crypto_hash_framesrc_rx = NOT_SET ; dcfg -> crypto_hash_href_pm = NOT_SET ; dcfg -> crypto_hash_faction_pm = NOT_SET ; dcfg -> crypto_hash_location_pm = NOT_SET ; dcfg -> crypto_hash_iframesrc_pm = NOT_SET ; dcfg -> crypto_hash_framesrc_pm = NOT_SET ; <S2SV_StartBug> return dcfg ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NOT_SET ; dcfg -> xml_external_entity = NOT_SET ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 pdf_t * pdf_new ( const char * name ) { const char * n ; pdf_t * pdf ; <S2SV_StartBug> pdf = calloc ( 1 , sizeof ( pdf_t ) ) ; <S2SV_EndBug> if ( name ) { if ( ( n = strrchr ( name , '/' ) ) ) ++ n ; else n = name ; <S2SV_StartBug> pdf -> name = malloc ( strlen ( n ) + 1 ) ; <S2SV_EndBug> strcpy ( pdf -> name , n ) ; } else { <S2SV_StartBug> pdf -> name = malloc ( strlen ( \"Unknown\" ) + 1 ) ; <S2SV_EndBug> strcpy ( pdf -> name , \"Unknown\" ) ; } return pdf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; pdf = safe_calloc ( <S2SV_ModEnd> sizeof ( pdf_t <S2SV_ModStart> -> name = safe_calloc <S2SV_ModEnd> ( strlen ( <S2SV_ModStart> -> name = safe_calloc <S2SV_ModEnd> ( strlen (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0290\n\n```\nCWE-20 struct sk_buff * __skb_recv_datagram ( struct sock * sk , unsigned int flags , int * peeked , int * off , int * err ) { struct sk_buff * skb ; long timeo ; int error = sock_error ( sk ) ; if ( error ) goto no_packet ; timeo = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; do { unsigned long cpu_flags ; struct sk_buff_head * queue = & sk -> sk_receive_queue ; spin_lock_irqsave ( & queue -> lock , cpu_flags ) ; skb_queue_walk ( queue , skb ) { * peeked = skb -> peeked ; if ( flags & MSG_PEEK ) { <S2SV_StartBug> if ( * off >= skb -> len ) { <S2SV_EndBug> * off -= skb -> len ; continue ; } skb -> peeked = 1 ; atomic_inc ( & skb -> users ) ; } else __skb_unlink ( skb , queue ) ; spin_unlock_irqrestore ( & queue -> lock , cpu_flags ) ; return skb ; } spin_unlock_irqrestore ( & queue -> lock , cpu_flags ) ; error = - EAGAIN ; if ( ! timeo ) goto no_packet ; } while ( ! wait_for_packet ( sk , err , & timeo ) ) ; return NULL ; no_packet : * err = error ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb -> len && skb -> len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int ASN1_verify ( i2d_of_void * i2d , X509_ALGOR * a , ASN1_BIT_STRING * signature , char * data , EVP_PKEY * pkey ) { EVP_MD_CTX ctx ; const EVP_MD * type ; unsigned char * p , * buf_in = NULL ; int ret = - 1 , i , inl ; EVP_MD_CTX_init ( & ctx ) ; i = OBJ_obj2nid ( a -> algorithm ) ; type = EVP_get_digestbyname ( OBJ_nid2sn ( i ) ) ; if ( type == NULL ) { ASN1err ( ASN1_F_ASN1_VERIFY , ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM ) ; goto err ; } <S2SV_StartBug> inl = i2d ( data , NULL ) ; <S2SV_EndBug> buf_in = OPENSSL_malloc ( ( unsigned int ) inl ) ; if ( buf_in == NULL ) { ASN1err ( ASN1_F_ASN1_VERIFY , ERR_R_MALLOC_FAILURE ) ; goto err ; } p = buf_in ; i2d ( data , & p ) ; ret = EVP_VerifyInit_ex ( & ctx , type , NULL ) && EVP_VerifyUpdate ( & ctx , ( unsigned char * ) buf_in , inl ) ; OPENSSL_cleanse ( buf_in , ( unsigned int ) inl ) ; OPENSSL_free ( buf_in ) ; if ( ! ret ) { ASN1err ( ASN1_F_ASN1_VERIFY , ERR_R_EVP_LIB ) ; goto err ; } ret = - 1 ; if ( EVP_VerifyFinal ( & ctx , ( unsigned char * ) signature -> data , ( unsigned int ) signature -> length , pkey ) <= 0 ) { ASN1err ( ASN1_F_ASN1_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } ret = 1 ; err : EVP_MD_CTX_cleanup ( & ctx ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } if ( signature -> type == V_ASN1_BIT_STRING && signature -> flags & 0x7 ) { ASN1err ( ASN1_F_ASN1_VERIFY , ASN1_R_INVALID_BIT_STRING_BITS_LEFT ) ; goto err ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999013\n\n```\nCWE-416 static int rm_read_multi ( AVFormatContext * s , AVIOContext * pb , AVStream * st , char * mime ) { int number_of_streams = avio_rb16 ( pb ) ; int number_of_mdpr ; int i , ret ; unsigned size2 ; for ( i = 0 ; i < number_of_streams ; i ++ ) avio_rb16 ( pb ) ; number_of_mdpr = avio_rb16 ( pb ) ; if ( number_of_mdpr != 1 ) { avpriv_request_sample ( s , \"MLTI<S2SV_blank>with<S2SV_blank>multiple<S2SV_blank>(%d)<S2SV_blank>MDPR\" , number_of_mdpr ) ; } for ( i = 0 ; i < number_of_mdpr ; i ++ ) { AVStream * st2 ; if ( i > 0 ) { st2 = avformat_new_stream ( s , NULL ) ; if ( ! st2 ) { ret = AVERROR ( ENOMEM ) ; return ret ; } st2 -> id = st -> id + ( i << 16 ) ; st2 -> codecpar -> bit_rate = st -> codecpar -> bit_rate ; st2 -> start_time = st -> start_time ; st2 -> duration = st -> duration ; st2 -> codecpar -> codec_type = AVMEDIA_TYPE_DATA ; st2 -> priv_data = ff_rm_alloc_rmstream ( ) ; if ( ! st2 -> priv_data ) return AVERROR ( ENOMEM ) ; } else st2 = st ; size2 = avio_rb32 ( pb ) ; ret = ff_rm_read_mdpr_codecdata ( s , s -> pb , st2 , st2 -> priv_data , <S2SV_StartBug> size2 , mime ) ; <S2SV_EndBug> if ( ret < 0 ) return ret ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , size2 , NULL <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1465\n\n```\nCWE-17 static int rt_fill_info ( struct net * net , __be32 dst , __be32 src , struct flowi4 * fl4 , struct sk_buff * skb , u32 portid , u32 seq , int event , int nowait , unsigned int flags ) { struct rtable * rt = skb_rtable ( skb ) ; struct rtmsg * r ; struct nlmsghdr * nlh ; unsigned long expires = 0 ; u32 error ; u32 metrics [ RTAX_MAX ] ; nlh = nlmsg_put ( skb , portid , seq , event , sizeof ( * r ) , flags ) ; if ( nlh == NULL ) return - EMSGSIZE ; r = nlmsg_data ( nlh ) ; r -> rtm_family = AF_INET ; r -> rtm_dst_len = 32 ; r -> rtm_src_len = 0 ; r -> rtm_tos = fl4 -> flowi4_tos ; r -> rtm_table = RT_TABLE_MAIN ; if ( nla_put_u32 ( skb , RTA_TABLE , RT_TABLE_MAIN ) ) goto nla_put_failure ; r -> rtm_type = rt -> rt_type ; r -> rtm_scope = RT_SCOPE_UNIVERSE ; r -> rtm_protocol = RTPROT_UNSPEC ; r -> rtm_flags = ( rt -> rt_flags & ~ 0xFFFF ) | RTM_F_CLONED ; if ( rt -> rt_flags & RTCF_NOTIFY ) <S2SV_StartBug> r -> rtm_flags |= RTM_F_NOTIFY ; <S2SV_EndBug> if ( nla_put_be32 ( skb , RTA_DST , dst ) ) goto nla_put_failure ; if ( src ) { r -> rtm_src_len = 32 ; if ( nla_put_be32 ( skb , RTA_SRC , src ) ) goto nla_put_failure ; } if ( rt -> dst . dev && nla_put_u32 ( skb , RTA_OIF , rt -> dst . dev -> ifindex ) ) goto nla_put_failure ; # ifdef CONFIG_IP_ROUTE_CLASSID if ( rt -> dst . tclassid && nla_put_u32 ( skb , RTA_FLOW , rt -> dst . tclassid ) ) goto nla_put_failure ; # endif if ( ! rt_is_input_route ( rt ) && fl4 -> saddr != src ) { if ( nla_put_be32 ( skb , RTA_PREFSRC , fl4 -> saddr ) ) goto nla_put_failure ; } if ( rt -> rt_uses_gateway && nla_put_be32 ( skb , RTA_GATEWAY , rt -> rt_gateway ) ) goto nla_put_failure ; expires = rt -> dst . expires ; if ( expires ) { unsigned long now = jiffies ; if ( time_before ( now , expires ) ) expires -= now ; else expires = 0 ; } memcpy ( metrics , dst_metrics_ptr ( & rt -> dst ) , sizeof ( metrics ) ) ; if ( rt -> rt_pmtu && expires ) metrics [ RTAX_MTU - 1 ] = rt -> rt_pmtu ; if ( rtnetlink_put_metrics ( skb , metrics ) < 0 ) goto nla_put_failure ; if ( fl4 -> flowi4_mark && nla_put_u32 ( skb , RTA_MARK , fl4 -> flowi4_mark ) ) goto nla_put_failure ; error = rt -> dst . error ; if ( rt_is_input_route ( rt ) ) { # ifdef CONFIG_IP_MROUTE if ( ipv4_is_multicast ( dst ) && ! ipv4_is_local_multicast ( dst ) && IPV4_DEVCONF_ALL ( net , MC_FORWARDING ) ) { int err = ipmr_get_route ( net , skb , fl4 -> saddr , fl4 -> daddr , r , nowait ) ; if ( err <= 0 ) { if ( ! nowait ) { if ( err == 0 ) return 0 ; goto nla_put_failure ; } else { if ( err == - EMSGSIZE ) goto nla_put_failure ; error = err ; } } } else # endif if ( nla_put_u32 ( skb , RTA_IIF , skb -> dev -> ifindex ) ) goto nla_put_failure ; } if ( rtnl_put_cacheinfo ( skb , & rt -> dst , 0 , expires , error ) < 0 ) goto nla_put_failure ; return nlmsg_end ( skb , nlh ) ; nla_put_failure : nlmsg_cancel ( skb , nlh ) ; return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rtm_flags |= RTM_F_NOTIFY ; if ( IPCB ( skb ) -> flags & IPSKB_DOREDIRECT ) r -> rtm_flags |= RTCF_DOREDIRECT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int PredictorEncodeTile ( TIFF * tif , uint8 * bp0 , tmsize_t cc0 , uint16 s ) { static const char module [ ] = \"PredictorEncodeTile\" ; TIFFPredictorState * sp = PredictorState ( tif ) ; uint8 * working_copy ; tmsize_t cc = cc0 , rowsize ; unsigned char * bp ; int result_code ; assert ( sp != NULL ) ; assert ( sp -> encodepfunc != NULL ) ; assert ( sp -> encodetile != NULL ) ; working_copy = ( uint8 * ) _TIFFmalloc ( cc0 ) ; if ( working_copy == NULL ) { TIFFErrorExt ( tif -> tif_clientdata , module , \"Out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>allocating<S2SV_blank>\" TIFF_SSIZE_FORMAT \"<S2SV_blank>byte<S2SV_blank>temp<S2SV_blank>buffer.\" , cc0 ) ; return 0 ; } memcpy ( working_copy , bp0 , cc0 ) ; bp = working_copy ; rowsize = sp -> rowsize ; assert ( rowsize > 0 ) ; if ( ( cc0 % rowsize ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"PredictorEncodeTile\" , \"%s\" , \"(cc0%rowsize)!=0\" ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } while ( cc > 0 ) { ( * sp -> encodepfunc ) ( tif , bp , rowsize ) ; cc -= rowsize ; bp += rowsize ; } result_code = ( * sp -> encodetile ) ( tif , working_copy , cc0 , s ) ; _TIFFfree ( working_copy ) ; return result_code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"(cc0%rowsize)!=0\" ) ; _TIFFfree ( working_copy ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int simulate_sync ( struct pt_regs * regs , unsigned int opcode ) { if ( ( opcode & OPCODE ) == SPEC0 && ( opcode & FUNC ) == SYNC ) { perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> return 0 ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8787\n\n```\nCWE-000 unsigned int nf_nat_redirect_ipv4 ( struct sk_buff * skb , const struct nf_nat_ipv4_multi_range_compat * mr , unsigned int hooknum ) { struct nf_conn * ct ; enum ip_conntrack_info ctinfo ; __be32 newdst ; struct nf_nat_range newrange ; NF_CT_ASSERT ( hooknum == NF_INET_PRE_ROUTING || hooknum == NF_INET_LOCAL_OUT ) ; ct = nf_ct_get ( skb , & ctinfo ) ; NF_CT_ASSERT ( ct && ( ctinfo == IP_CT_NEW || ctinfo == IP_CT_RELATED ) ) ; if ( hooknum == NF_INET_LOCAL_OUT ) { newdst = htonl ( 0x7F000001 ) ; } else { struct in_device * indev ; struct in_ifaddr * ifa ; newdst = 0 ; rcu_read_lock ( ) ; indev = __in_dev_get_rcu ( skb -> dev ) ; <S2SV_StartBug> if ( indev != NULL ) { <S2SV_EndBug> ifa = indev -> ifa_list ; newdst = ifa -> ifa_local ; } rcu_read_unlock ( ) ; if ( ! newdst ) return NF_DROP ; } memset ( & newrange . min_addr , 0 , sizeof ( newrange . min_addr ) ) ; memset ( & newrange . max_addr , 0 , sizeof ( newrange . max_addr ) ) ; newrange . flags = mr -> range [ 0 ] . flags | NF_NAT_RANGE_MAP_IPS ; newrange . min_addr . ip = newdst ; newrange . max_addr . ip = newdst ; newrange . min_proto = mr -> range [ 0 ] . min ; newrange . max_proto = mr -> range [ 0 ] . max ; return nf_nat_setup_info ( ct , & newrange , NF_NAT_MANIP_DST ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( indev && indev -> ifa_list <S2SV_ModEnd> ) { ifa\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 int ext4_setattr ( struct dentry * dentry , struct iattr * attr ) { struct inode * inode = d_inode ( dentry ) ; int error , rc = 0 ; int orphan = 0 ; const unsigned int ia_valid = attr -> ia_valid ; error = inode_change_ok ( inode , attr ) ; if ( error ) return error ; if ( is_quota_modification ( inode , attr ) ) { error = dquot_initialize ( inode ) ; if ( error ) return error ; } if ( ( ia_valid & ATTR_UID && ! uid_eq ( attr -> ia_uid , inode -> i_uid ) ) || ( ia_valid & ATTR_GID && ! gid_eq ( attr -> ia_gid , inode -> i_gid ) ) ) { handle_t * handle ; handle = ext4_journal_start ( inode , EXT4_HT_QUOTA , ( EXT4_MAXQUOTAS_INIT_BLOCKS ( inode -> i_sb ) + EXT4_MAXQUOTAS_DEL_BLOCKS ( inode -> i_sb ) ) + 3 ) ; if ( IS_ERR ( handle ) ) { error = PTR_ERR ( handle ) ; goto err_out ; } error = dquot_transfer ( inode , attr ) ; if ( error ) { ext4_journal_stop ( handle ) ; return error ; } if ( attr -> ia_valid & ATTR_UID ) inode -> i_uid = attr -> ia_uid ; if ( attr -> ia_valid & ATTR_GID ) inode -> i_gid = attr -> ia_gid ; error = ext4_mark_inode_dirty ( handle , inode ) ; ext4_journal_stop ( handle ) ; } if ( attr -> ia_valid & ATTR_SIZE ) { handle_t * handle ; loff_t oldsize = inode -> i_size ; int shrink = ( attr -> ia_size <= inode -> i_size ) ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) { struct ext4_sb_info * sbi = EXT4_SB ( inode -> i_sb ) ; if ( attr -> ia_size > sbi -> s_bitmap_maxbytes ) return - EFBIG ; } if ( ! S_ISREG ( inode -> i_mode ) ) return - EINVAL ; if ( IS_I_VERSION ( inode ) && attr -> ia_size != inode -> i_size ) inode_inc_iversion ( inode ) ; if ( ext4_should_order_data ( inode ) && ( attr -> ia_size < inode -> i_size ) ) { error = ext4_begin_ordered_truncate ( inode , attr -> ia_size ) ; if ( error ) goto err_out ; } if ( attr -> ia_size != inode -> i_size ) { handle = ext4_journal_start ( inode , EXT4_HT_INODE , 3 ) ; if ( IS_ERR ( handle ) ) { error = PTR_ERR ( handle ) ; goto err_out ; } if ( ext4_handle_valid ( handle ) && shrink ) { error = ext4_orphan_add ( handle , inode ) ; orphan = 1 ; } if ( ! shrink ) { inode -> i_mtime = ext4_current_time ( inode ) ; inode -> i_ctime = inode -> i_mtime ; } down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; EXT4_I ( inode ) -> i_disksize = attr -> ia_size ; rc = ext4_mark_inode_dirty ( handle , inode ) ; if ( ! error ) error = rc ; if ( ! error ) i_size_write ( inode , attr -> ia_size ) ; up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; ext4_journal_stop ( handle ) ; if ( error ) { if ( orphan ) ext4_orphan_del ( NULL , inode ) ; goto err_out ; } } if ( ! shrink ) pagecache_isize_extended ( inode , oldsize , inode -> i_size ) ; if ( orphan ) { if ( ! ext4_should_journal_data ( inode ) ) { ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; ext4_inode_resume_unlocked_dio ( inode ) ; } else ext4_wait_for_tail_page_commit ( inode ) ; } <S2SV_StartBug> truncate_pagecache ( inode , inode -> i_size ) ; <S2SV_EndBug> if ( shrink ) <S2SV_StartBug> ext4_truncate ( inode ) ; <S2SV_EndBug> } if ( ! rc ) { setattr_copy ( inode , attr ) ; mark_inode_dirty ( inode ) ; } if ( orphan && inode -> i_nlink ) ext4_orphan_del ( NULL , inode ) ; if ( ! rc && ( ia_valid & ATTR_MODE ) ) rc = posix_acl_chmod ( inode , inode -> i_mode ) ; err_out : ext4_std_error ( inode -> i_sb , error ) ; if ( ! error ) error = rc ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> ext4_truncate ( inode ) ; up_write ( & EXT4_I ( inode ) -> i_mmap_sem\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8649\n\n```\nCWE-264 int lxc_attach ( const char * name , const char * lxcpath , lxc_attach_exec_t exec_function , void * exec_payload , lxc_attach_options_t * options , pid_t * attached_process ) { int ret , status ; pid_t init_pid , pid , attached_pid , expected ; struct lxc_proc_context_info * init_ctx ; char * cwd ; char * new_cwd ; int ipc_sockets [ 2 ] ; <S2SV_StartBug> int procfd ; <S2SV_EndBug> signed long personality ; if ( ! options ) options = & attach_static_default_options ; init_pid = lxc_cmd_get_init_pid ( name , lxcpath ) ; if ( init_pid < 0 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>the<S2SV_blank>init<S2SV_blank>pid\" ) ; return - 1 ; } init_ctx = lxc_proc_get_context_info ( init_pid ) ; if ( ! init_ctx ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>context<S2SV_blank>of<S2SV_blank>the<S2SV_blank>init<S2SV_blank>process,<S2SV_blank>pid<S2SV_blank>=<S2SV_blank>%ld\" , ( long ) init_pid ) ; return - 1 ; } personality = get_personality ( name , lxcpath ) ; if ( init_ctx -> personality < 0 ) { ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>personality<S2SV_blank>of<S2SV_blank>the<S2SV_blank>container\" ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } init_ctx -> personality = personality ; init_ctx -> container = lxc_container_new ( name , lxcpath ) ; if ( ! init_ctx -> container ) return - 1 ; if ( ! fetch_seccomp ( init_ctx -> container , options ) ) WARN ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>seccomp<S2SV_blank>policy\" ) ; if ( ! no_new_privs ( init_ctx -> container , options ) ) WARN ( \"Could<S2SV_blank>not<S2SV_blank>determine<S2SV_blank>whether<S2SV_blank>PR_SET_NO_NEW_PRIVS<S2SV_blank>is<S2SV_blank>set.\" ) ; cwd = getcwd ( NULL , 0 ) ; if ( options -> namespaces == - 1 ) { options -> namespaces = lxc_cmd_get_clone_flags ( name , lxcpath ) ; if ( options -> namespaces == - 1 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>automatically<S2SV_blank>determine<S2SV_blank>the<S2SV_blank>\" \"namespaces<S2SV_blank>which<S2SV_blank>the<S2SV_blank>container<S2SV_blank>unshared\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } } ret = socketpair ( PF_LOCAL , SOCK_STREAM | SOCK_CLOEXEC , 0 , ipc_sockets ) ; if ( ret < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>up<S2SV_blank>required<S2SV_blank>IPC<S2SV_blank>mechanism<S2SV_blank>for<S2SV_blank>attaching\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } pid = fork ( ) ; if ( pid < 0 ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>first<S2SV_blank>subprocess\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } if ( pid ) { <S2SV_StartBug> pid_t to_cleanup_pid = pid ; <S2SV_EndBug> close ( ipc_sockets [ 1 ] ) ; free ( cwd ) ; if ( options -> attach_flags & LXC_ATTACH_MOVE_TO_CGROUP ) { if ( ! cgroup_attach ( name , lxcpath , pid ) ) goto cleanup_error ; } <S2SV_StartBug> status = 0 ; <S2SV_EndBug> ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" ) ; goto cleanup_error ; } <S2SV_StartBug> ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & attached_pid , sizeof ( attached_pid ) , NULL ) ; <S2SV_EndBug> if ( ret <= 0 ) { <S2SV_StartBug> if ( ret != 0 ) <S2SV_EndBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>attached<S2SV_blank>process\" ) ; goto cleanup_error ; } <S2SV_StartBug> if ( options -> stdin_fd == 0 ) { <S2SV_EndBug> signal ( SIGINT , SIG_IGN ) ; signal ( SIGQUIT , SIG_IGN ) ; } ret = wait_for_pid ( pid ) ; if ( ret < 0 ) goto cleanup_error ; to_cleanup_pid = attached_pid ; status = 0 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" ) ; goto cleanup_error ; } expected = 1 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { if ( ret != 0 ) <S2SV_StartBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>(1)\" ) ; <S2SV_EndBug> goto cleanup_error ; } status = 2 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { <S2SV_StartBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(2)\" ) ; <S2SV_EndBug> goto cleanup_error ; } <S2SV_StartBug> shutdown ( ipc_sockets [ 0 ] , SHUT_RDWR ) ; <S2SV_EndBug> close ( ipc_sockets [ 0 ] ) ; lxc_proc_put_context_info ( init_ctx ) ; * attached_process = attached_pid ; return 0 ; <S2SV_StartBug> cleanup_error : <S2SV_EndBug> shutdown ( ipc_sockets [ 0 ] , SHUT_RDWR ) ; close ( ipc_sockets [ 0 ] ) ; if ( to_cleanup_pid ) ( void ) wait_for_pid ( to_cleanup_pid ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } close ( ipc_sockets [ 0 ] ) ; expected = 0 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 1 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>communicating<S2SV_blank>with<S2SV_blank>child<S2SV_blank>process\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( ( options -> attach_flags & LXC_ATTACH_MOVE_TO_CGROUP ) && cgns_supported ( ) ) options -> namespaces |= CLONE_NEWCGROUP ; <S2SV_StartBug> procfd = open ( \"/proc\" , O_DIRECTORY | O_RDONLY ) ; <S2SV_EndBug> if ( procfd < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>/proc\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } ret = lxc_attach_to_ns ( init_pid , options -> namespaces ) ; if ( ret < 0 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>enter<S2SV_blank>the<S2SV_blank>namespace\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( options -> initial_cwd ) new_cwd = options -> initial_cwd ; else new_cwd = cwd ; ret = chdir ( new_cwd ) ; if ( ret < 0 ) WARN ( \"could<S2SV_blank>not<S2SV_blank>change<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>\\'%s\\'\" , new_cwd ) ; free ( cwd ) ; { struct attach_clone_payload payload = { . ipc_socket = ipc_sockets [ 1 ] , . options = options , . init_ctx = init_ctx , . exec_function = exec_function , . exec_payload = exec_payload , <S2SV_StartBug> . procfd = procfd <S2SV_EndBug> } ; pid = lxc_clone ( attach_child_main , & payload , CLONE_PARENT ) ; } if ( pid <= 0 ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>subprocess\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } ret = lxc_write_nointr ( ipc_sockets [ 1 ] , & pid , sizeof ( pid ) ) ; if ( ret != sizeof ( pid ) ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>main<S2SV_blank>process<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>the<S2SV_blank>attached<S2SV_blank>process\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } rexit ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ] ; <S2SV_ModEnd> signed long personality <S2SV_ModStart> pid ) { int procfd = - 1 ; <S2SV_ModStart> cleanup_error ; } procfd = open ( \"/proc\" , O_DIRECTORY | O_RDONLY | O_CLOEXEC ) ; if ( procfd < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>/proc.\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> cleanup_error ; } status = 0 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> , sizeof ( status ) <S2SV_ModEnd> ) ; if <S2SV_ModStart> 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> cleanup_error ; } ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & attached_pid , sizeof ( attached_pid ) , NULL ) ; if ( ret <= 0 ) { if ( ret != 0 ) ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>attached<S2SV_blank>process\" ) ; goto cleanup_error ; } <S2SV_ModStart> ) ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>\" \"from<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>(1)\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>\" \"initialization<S2SV_blank>(2):<S2SV_blank>%s.\" , strerror ( errno ) <S2SV_ModEnd> ) ; goto <S2SV_ModStart> cleanup_error ; } expected = 3 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>for<S2SV_blank>the<S2SV_blank>child<S2SV_blank>to<S2SV_blank>tell<S2SV_blank>us<S2SV_blank>to<S2SV_blank>open<S2SV_blank>LSM<S2SV_blank>fd<S2SV_blank>(3):<S2SV_blank>%s.\" , strerror ( errno ) ) ; goto cleanup_error ; } if ( ( options -> namespaces & CLONE_NEWNS ) && ( options -> attach_flags & LXC_ATTACH_LSM ) && init_ctx -> lsm_label ) { int on_exec , labelfd ; on_exec = options -> attach_flags & LXC_ATTACH_LSM_EXEC ? 1 : 0 ; labelfd = lsm_openat ( procfd , attached_pid , on_exec ) ; if ( labelfd < 0 ) goto cleanup_error ; ret = lxc_abstract_unix_send_fd ( ipc_sockets [ 0 ] , labelfd , NULL , 0 ) ; if ( ret <= 0 ) { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>send<S2SV_blank>child<S2SV_blank>LSM<S2SV_blank>fd<S2SV_blank>(4):<S2SV_blank>%s.\" , strerror ( errno ) ) ; goto cleanup_error ; } } <S2SV_ModStart> ; cleanup_error : if ( procfd >= 0 ) close ( procfd ) ; <S2SV_ModStart> |= CLONE_NEWCGROUP ; <S2SV_ModEnd> ret = lxc_attach_to_ns <S2SV_ModStart> = exec_payload , <S2SV_ModEnd> } ; pid\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8650\n\n```\nCWE-20 int mpi_powm ( MPI res , MPI base , MPI exp , MPI mod ) { mpi_ptr_t mp_marker = NULL , bp_marker = NULL , ep_marker = NULL ; mpi_ptr_t xp_marker = NULL ; mpi_ptr_t tspace = NULL ; mpi_ptr_t rp , ep , mp , bp ; mpi_size_t esize , msize , bsize , rsize ; int esign , msign , bsign , rsign ; mpi_size_t size ; int mod_shift_cnt ; int negative_result ; int assign_rp = 0 ; mpi_size_t tsize = 0 ; int rc = - ENOMEM ; esize = exp -> nlimbs ; msize = mod -> nlimbs ; size = 2 * msize ; esign = exp -> sign ; msign = mod -> sign ; rp = res -> d ; ep = exp -> d ; if ( ! msize ) return - EINVAL ; if ( ! esize ) { <S2SV_StartBug> rp [ 0 ] = 1 ; <S2SV_EndBug> <S2SV_StartBug> res -> nlimbs = ( msize == 1 && mod -> d [ 0 ] == 1 ) ? 0 : 1 ; <S2SV_EndBug> res -> sign = 0 ; goto leave ; } mp = mp_marker = mpi_alloc_limb_space ( msize ) ; if ( ! mp ) goto enomem ; mod_shift_cnt = count_leading_zeros ( mod -> d [ msize - 1 ] ) ; if ( mod_shift_cnt ) mpihelp_lshift ( mp , mod -> d , msize , mod_shift_cnt ) ; else MPN_COPY ( mp , mod -> d , msize ) ; bsize = base -> nlimbs ; bsign = base -> sign ; if ( bsize > msize ) { bp = bp_marker = mpi_alloc_limb_space ( bsize + 1 ) ; if ( ! bp ) goto enomem ; MPN_COPY ( bp , base -> d , bsize ) ; mpihelp_divrem ( bp + msize , 0 , bp , bsize , mp , msize ) ; bsize = msize ; MPN_NORMALIZE ( bp , bsize ) ; } else bp = base -> d ; if ( ! bsize ) { res -> nlimbs = 0 ; res -> sign = 0 ; goto leave ; } if ( res -> alloced < size ) { if ( rp == ep || rp == mp || rp == bp ) { rp = mpi_alloc_limb_space ( size ) ; if ( ! rp ) goto enomem ; assign_rp = 1 ; } else { if ( mpi_resize ( res , size ) < 0 ) goto enomem ; rp = res -> d ; } } else { if ( rp == bp ) { BUG_ON ( bp_marker ) ; bp = bp_marker = mpi_alloc_limb_space ( bsize ) ; if ( ! bp ) goto enomem ; MPN_COPY ( bp , rp , bsize ) ; } if ( rp == ep ) { ep = ep_marker = mpi_alloc_limb_space ( esize ) ; if ( ! ep ) goto enomem ; MPN_COPY ( ep , rp , esize ) ; } if ( rp == mp ) { BUG_ON ( mp_marker ) ; mp = mp_marker = mpi_alloc_limb_space ( msize ) ; if ( ! mp ) goto enomem ; MPN_COPY ( mp , rp , msize ) ; } } MPN_COPY ( rp , bp , bsize ) ; rsize = bsize ; rsign = bsign ; { mpi_size_t i ; mpi_ptr_t xp ; int c ; mpi_limb_t e ; mpi_limb_t carry_limb ; struct karatsuba_ctx karactx ; xp = xp_marker = mpi_alloc_limb_space ( 2 * ( msize + 1 ) ) ; if ( ! xp ) goto enomem ; memset ( & karactx , 0 , sizeof karactx ) ; negative_result = ( ep [ 0 ] & 1 ) && base -> sign ; i = esize - 1 ; e = ep [ i ] ; c = count_leading_zeros ( e ) ; e = ( e << c ) << 1 ; c = BITS_PER_MPI_LIMB - 1 - c ; for ( ; ; ) { while ( c ) { mpi_ptr_t tp ; mpi_size_t xsize ; if ( rsize < KARATSUBA_THRESHOLD ) mpih_sqr_n_basecase ( xp , rp , rsize ) ; else { if ( ! tspace ) { tsize = 2 * rsize ; tspace = mpi_alloc_limb_space ( tsize ) ; if ( ! tspace ) goto enomem ; } else if ( tsize < ( 2 * rsize ) ) { mpi_free_limb_space ( tspace ) ; tsize = 2 * rsize ; tspace = mpi_alloc_limb_space ( tsize ) ; if ( ! tspace ) goto enomem ; } mpih_sqr_n ( xp , rp , rsize , tspace ) ; } xsize = 2 * rsize ; if ( xsize > msize ) { mpihelp_divrem ( xp + msize , 0 , xp , xsize , mp , msize ) ; xsize = msize ; } tp = rp ; rp = xp ; xp = tp ; rsize = xsize ; if ( ( mpi_limb_signed_t ) e < 0 ) { if ( bsize < KARATSUBA_THRESHOLD ) { mpi_limb_t tmp ; if ( mpihelp_mul ( xp , rp , rsize , bp , bsize , & tmp ) < 0 ) goto enomem ; } else { if ( mpihelp_mul_karatsuba_case ( xp , rp , rsize , bp , bsize , & karactx ) < 0 ) goto enomem ; } xsize = rsize + bsize ; if ( xsize > msize ) { mpihelp_divrem ( xp + msize , 0 , xp , xsize , mp , msize ) ; xsize = msize ; } tp = rp ; rp = xp ; xp = tp ; rsize = xsize ; } e <<= 1 ; c -- ; } i -- ; if ( i < 0 ) break ; e = ep [ i ] ; c = BITS_PER_MPI_LIMB ; } if ( mod_shift_cnt ) { carry_limb = mpihelp_lshift ( res -> d , rp , rsize , mod_shift_cnt ) ; rp = res -> d ; if ( carry_limb ) { rp [ rsize ] = carry_limb ; rsize ++ ; } } else { MPN_COPY ( res -> d , rp , rsize ) ; rp = res -> d ; } if ( rsize >= msize ) { mpihelp_divrem ( rp + msize , 0 , rp , rsize , mp , msize ) ; rsize = msize ; } if ( mod_shift_cnt ) mpihelp_rshift ( rp , rp , rsize , mod_shift_cnt ) ; MPN_NORMALIZE ( rp , rsize ) ; mpihelp_release_karatsuba_ctx ( & karactx ) ; } if ( negative_result && rsize ) { if ( mod_shift_cnt ) mpihelp_rshift ( mp , mp , msize , mod_shift_cnt ) ; mpihelp_sub ( rp , mp , msize , rp , rsize ) ; rsize = msize ; rsign = msign ; MPN_NORMALIZE ( rp , rsize ) ; } res -> nlimbs = rsize ; res -> sign = rsign ; leave : rc = 0 ; enomem : if ( assign_rp ) mpi_assign_limb_space ( res , rp , size ) ; if ( mp_marker ) mpi_free_limb_space ( mp_marker ) ; if ( bp_marker ) mpi_free_limb_space ( bp_marker ) ; if ( ep_marker ) mpi_free_limb_space ( ep_marker ) ; if ( xp_marker ) mpi_free_limb_space ( xp_marker ) ; if ( tspace ) mpi_free_limb_space ( tspace ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> esize ) { <S2SV_ModEnd> res -> nlimbs <S2SV_ModStart> : 1 ; if ( res -> nlimbs ) { if ( mpi_resize ( res , 1 ) < 0 ) goto enomem ; rp = res -> d ; rp [ 0 ] = 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 int tls1_change_cipher_state ( SSL * s , int which ) { unsigned char * p , * mac_secret ; unsigned char tmp1 [ EVP_MAX_KEY_LENGTH ] ; unsigned char tmp2 [ EVP_MAX_KEY_LENGTH ] ; unsigned char iv1 [ EVP_MAX_IV_LENGTH * 2 ] ; unsigned char iv2 [ EVP_MAX_IV_LENGTH * 2 ] ; unsigned char * ms , * key , * iv ; EVP_CIPHER_CTX * dd ; const EVP_CIPHER * c ; # ifndef OPENSSL_NO_COMP const SSL_COMP * comp ; # endif const EVP_MD * m ; int mac_type ; int * mac_secret_size ; EVP_MD_CTX * mac_ctx ; EVP_PKEY * mac_key ; int n , i , j , k , cl ; int reuse_dd = 0 ; c = s -> s3 -> tmp . new_sym_enc ; m = s -> s3 -> tmp . new_hash ; mac_type = s -> s3 -> tmp . new_mac_pkey_type ; # ifndef OPENSSL_NO_COMP comp = s -> s3 -> tmp . new_compression ; # endif if ( which & SSL3_CC_READ ) { <S2SV_StartBug> if ( s -> s3 -> tmp . new_cipher -> algorithm2 & TLS1_STREAM_MAC ) <S2SV_EndBug> s -> mac_flags |= SSL_MAC_FLAG_READ_MAC_STREAM ; else s -> mac_flags &= ~ SSL_MAC_FLAG_READ_MAC_STREAM ; if ( s -> enc_read_ctx != NULL ) reuse_dd = 1 ; else if ( ( s -> enc_read_ctx = EVP_CIPHER_CTX_new ( ) ) == NULL ) goto err ; else EVP_CIPHER_CTX_reset ( s -> enc_read_ctx ) ; dd = s -> enc_read_ctx ; mac_ctx = ssl_replace_hash ( & s -> read_hash , NULL ) ; if ( mac_ctx == NULL ) goto err ; # ifndef OPENSSL_NO_COMP COMP_CTX_free ( s -> expand ) ; s -> expand = NULL ; if ( comp != NULL ) { s -> expand = COMP_CTX_new ( comp -> method ) ; if ( s -> expand == NULL ) { SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , SSL_R_COMPRESSION_LIBRARY_ERROR ) ; goto err2 ; } } # endif if ( ! SSL_IS_DTLS ( s ) ) RECORD_LAYER_reset_read_sequence ( & s -> rlayer ) ; mac_secret = & ( s -> s3 -> read_mac_secret [ 0 ] ) ; mac_secret_size = & ( s -> s3 -> read_mac_secret_size ) ; <S2SV_StartBug> } else { <S2SV_EndBug> if ( s -> s3 -> tmp . new_cipher -> algorithm2 & TLS1_STREAM_MAC ) s -> mac_flags |= SSL_MAC_FLAG_WRITE_MAC_STREAM ; else s -> mac_flags &= ~ SSL_MAC_FLAG_WRITE_MAC_STREAM ; if ( s -> enc_write_ctx != NULL && ! SSL_IS_DTLS ( s ) ) reuse_dd = 1 ; else if ( ( s -> enc_write_ctx = EVP_CIPHER_CTX_new ( ) ) == NULL ) goto err ; dd = s -> enc_write_ctx ; if ( SSL_IS_DTLS ( s ) ) { mac_ctx = EVP_MD_CTX_new ( ) ; if ( mac_ctx == NULL ) goto err ; s -> write_hash = mac_ctx ; } else { mac_ctx = ssl_replace_hash ( & s -> write_hash , NULL ) ; if ( mac_ctx == NULL ) goto err ; } # ifndef OPENSSL_NO_COMP COMP_CTX_free ( s -> compress ) ; s -> compress = NULL ; if ( comp != NULL ) { s -> compress = COMP_CTX_new ( comp -> method ) ; if ( s -> compress == NULL ) { SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , SSL_R_COMPRESSION_LIBRARY_ERROR ) ; goto err2 ; } } # endif if ( ! SSL_IS_DTLS ( s ) ) RECORD_LAYER_reset_write_sequence ( & s -> rlayer ) ; mac_secret = & ( s -> s3 -> write_mac_secret [ 0 ] ) ; mac_secret_size = & ( s -> s3 -> write_mac_secret_size ) ; } if ( reuse_dd ) EVP_CIPHER_CTX_reset ( dd ) ; p = s -> s3 -> tmp . key_block ; i = * mac_secret_size = s -> s3 -> tmp . new_mac_secret_size ; cl = EVP_CIPHER_key_length ( c ) ; j = cl ; if ( EVP_CIPHER_mode ( c ) == EVP_CIPH_GCM_MODE ) k = EVP_GCM_TLS_FIXED_IV_LEN ; else if ( EVP_CIPHER_mode ( c ) == EVP_CIPH_CCM_MODE ) k = EVP_CCM_TLS_FIXED_IV_LEN ; else k = EVP_CIPHER_iv_length ( c ) ; if ( ( which == SSL3_CHANGE_CIPHER_CLIENT_WRITE ) || ( which == SSL3_CHANGE_CIPHER_SERVER_READ ) ) { ms = & ( p [ 0 ] ) ; n = i + i ; key = & ( p [ n ] ) ; n += j + j ; iv = & ( p [ n ] ) ; n += k + k ; } else { n = i ; ms = & ( p [ n ] ) ; n += i + j ; key = & ( p [ n ] ) ; n += j + k ; iv = & ( p [ n ] ) ; n += k ; } if ( n > s -> s3 -> tmp . key_block_length ) { SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , ERR_R_INTERNAL_ERROR ) ; goto err2 ; } memcpy ( mac_secret , ms , i ) ; if ( ! ( EVP_CIPHER_flags ( c ) & EVP_CIPH_FLAG_AEAD_CIPHER ) ) { mac_key = EVP_PKEY_new_mac_key ( mac_type , NULL , mac_secret , * mac_secret_size ) ; if ( mac_key == NULL || EVP_DigestSignInit ( mac_ctx , NULL , m , NULL , mac_key ) <= 0 ) { EVP_PKEY_free ( mac_key ) ; SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , ERR_R_INTERNAL_ERROR ) ; goto err2 ; } EVP_PKEY_free ( mac_key ) ; } # ifdef SSL_DEBUG printf ( \"which<S2SV_blank>=<S2SV_blank>%04X\\\\nmac<S2SV_blank>key=\" , which ) ; { int z ; for ( z = 0 ; z < i ; z ++ ) printf ( \"%02X%c\" , ms [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } # endif if ( EVP_CIPHER_mode ( c ) == EVP_CIPH_GCM_MODE ) { if ( ! EVP_CipherInit_ex ( dd , c , NULL , key , NULL , ( which & SSL3_CC_WRITE ) ) || ! EVP_CIPHER_CTX_ctrl ( dd , EVP_CTRL_GCM_SET_IV_FIXED , k , iv ) ) { SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , ERR_R_INTERNAL_ERROR ) ; goto err2 ; } } else if ( EVP_CIPHER_mode ( c ) == EVP_CIPH_CCM_MODE ) { int taglen ; if ( s -> s3 -> tmp . new_cipher -> algorithm_enc & ( SSL_AES128CCM8 | SSL_AES256CCM8 ) ) taglen = 8 ; else taglen = 16 ; if ( ! EVP_CipherInit_ex ( dd , c , NULL , NULL , NULL , ( which & SSL3_CC_WRITE ) ) || ! EVP_CIPHER_CTX_ctrl ( dd , EVP_CTRL_AEAD_SET_IVLEN , 12 , NULL ) || ! EVP_CIPHER_CTX_ctrl ( dd , EVP_CTRL_AEAD_SET_TAG , taglen , NULL ) || ! EVP_CIPHER_CTX_ctrl ( dd , EVP_CTRL_CCM_SET_IV_FIXED , k , iv ) || ! EVP_CipherInit_ex ( dd , NULL , NULL , key , NULL , - 1 ) ) { SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , ERR_R_INTERNAL_ERROR ) ; goto err2 ; } } else { if ( ! EVP_CipherInit_ex ( dd , c , NULL , key , iv , ( which & SSL3_CC_WRITE ) ) ) { SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , ERR_R_INTERNAL_ERROR ) ; goto err2 ; } } if ( ( EVP_CIPHER_flags ( c ) & EVP_CIPH_FLAG_AEAD_CIPHER ) && * mac_secret_size && ! EVP_CIPHER_CTX_ctrl ( dd , EVP_CTRL_AEAD_SET_MAC_KEY , * mac_secret_size , mac_secret ) ) { SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , ERR_R_INTERNAL_ERROR ) ; goto err2 ; } # ifdef OPENSSL_SSL_TRACE_CRYPTO if ( s -> msg_callback ) { int wh = which & SSL3_CC_WRITE ? TLS1_RT_CRYPTO_WRITE : 0 ; if ( * mac_secret_size ) s -> msg_callback ( 2 , s -> version , wh | TLS1_RT_CRYPTO_MAC , mac_secret , * mac_secret_size , s , s -> msg_callback_arg ) ; if ( c -> key_len ) s -> msg_callback ( 2 , s -> version , wh | TLS1_RT_CRYPTO_KEY , key , c -> key_len , s , s -> msg_callback_arg ) ; if ( k ) { if ( EVP_CIPHER_mode ( c ) == EVP_CIPH_GCM_MODE ) wh |= TLS1_RT_CRYPTO_FIXED_IV ; else wh |= TLS1_RT_CRYPTO_IV ; s -> msg_callback ( 2 , s -> version , wh , iv , k , s , s -> msg_callback_arg ) ; } } # endif # ifdef SSL_DEBUG printf ( \"which<S2SV_blank>=<S2SV_blank>%04X\\\\nkey=\" , which ) ; { int z ; for ( z = 0 ; z < EVP_CIPHER_key_length ( c ) ; z ++ ) printf ( \"%02X%c\" , key [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } printf ( \"\\\\niv=\" ) ; { int z ; for ( z = 0 ; z < k ; z ++ ) printf ( \"%02X%c\" , iv [ z ] , ( ( z + 1 ) % 16 ) ? '<S2SV_blank>' : '\\\\n' ) ; } printf ( \"\\\\n\" ) ; # endif OPENSSL_cleanse ( tmp1 , sizeof ( tmp1 ) ) ; OPENSSL_cleanse ( tmp2 , sizeof ( tmp1 ) ) ; OPENSSL_cleanse ( iv1 , sizeof ( iv1 ) ) ; OPENSSL_cleanse ( iv2 , sizeof ( iv2 ) ) ; return ( 1 ) ; err : SSLerr ( SSL_F_TLS1_CHANGE_CIPHER_STATE , ERR_R_MALLOC_FAILURE ) ; err2 : OPENSSL_cleanse ( tmp1 , sizeof ( tmp1 ) ) ; OPENSSL_cleanse ( tmp2 , sizeof ( tmp1 ) ) ; OPENSSL_cleanse ( iv1 , sizeof ( iv1 ) ) ; OPENSSL_cleanse ( iv2 , sizeof ( iv2 ) ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( s -> tlsext_use_etm ) s -> s3 -> flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_READ ; else s -> s3 -> flags &= ~ TLS1_FLAGS_ENCRYPT_THEN_MAC_READ ; if ( s -> <S2SV_ModStart> } else { if ( s -> tlsext_use_etm ) s -> s3 -> flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE ; else s -> s3 -> flags &= ~ TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfs3svc_decode_readdirargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd3_readdirargs * args ) { p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; p = xdr_decode_hyper ( p , & args -> cookie ) ; args -> verf = p ; p += 2 ; args -> dircount = ~ 0 ; args -> count = ntohl ( * p ++ ) ; <S2SV_StartBug> args -> count = min_t ( u32 , args -> count , PAGE_SIZE ) ; <S2SV_EndBug> args -> buffer = page_address ( * ( rqstp -> rq_next_page ++ ) ) ; <S2SV_StartBug> return xdr_argsize_check ( rqstp , p ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) ; if ( ! xdr_argsize_check ( rqstp , p ) ) return 0 ; <S2SV_ModStart> ) ; return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr_rmtval_get ( struct xfs_da_args * args ) { struct xfs_bmbt_irec map [ ATTR_RMTVALUE_MAPSIZE ] ; struct xfs_mount * mp = args -> dp -> i_mount ; struct xfs_buf * bp ; xfs_dablk_t lblkno = args -> rmtblkno ; __uint8_t * dst = args -> value ; <S2SV_StartBug> int valuelen = args -> valuelen ; <S2SV_EndBug> int nmap ; int error ; int blkcnt = args -> rmtblkcnt ; int i ; int offset = 0 ; trace_xfs_attr_rmtval_get ( args ) ; <S2SV_StartBug> ASSERT ( ! ( args -> flags & ATTR_KERNOVAL ) ) ; <S2SV_EndBug> while ( valuelen > 0 ) { nmap = ATTR_RMTVALUE_MAPSIZE ; error = xfs_bmapi_read ( args -> dp , ( xfs_fileoff_t ) lblkno , blkcnt , map , & nmap , XFS_BMAPI_ATTRFORK ) ; if ( error ) return error ; ASSERT ( nmap >= 1 ) ; for ( i = 0 ; ( i < nmap ) && ( valuelen > 0 ) ; i ++ ) { xfs_daddr_t dblkno ; int dblkcnt ; ASSERT ( ( map [ i ] . br_startblock != DELAYSTARTBLOCK ) && ( map [ i ] . br_startblock != HOLESTARTBLOCK ) ) ; dblkno = XFS_FSB_TO_DADDR ( mp , map [ i ] . br_startblock ) ; dblkcnt = XFS_FSB_TO_BB ( mp , map [ i ] . br_blockcount ) ; error = xfs_trans_read_buf ( mp , NULL , mp -> m_ddev_targp , dblkno , dblkcnt , 0 , & bp , & xfs_attr3_rmt_buf_ops ) ; if ( error ) return error ; error = xfs_attr_rmtval_copyout ( mp , bp , args -> dp -> i_ino , & offset , & valuelen , & dst ) ; xfs_buf_relse ( bp ) ; if ( error ) return error ; lblkno += map [ i ] . br_blockcount ; blkcnt -= map [ i ] . br_blockcount ; } } ASSERT ( valuelen == 0 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int valuelen <S2SV_ModEnd> ; int nmap <S2SV_ModStart> ATTR_KERNOVAL ) ) ; ASSERT ( args -> rmtvaluelen == args -> valuelen ) ; valuelen = args -> rmtvaluelen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12209\n\n```\nCWE-59 int pam_sm_authenticate ( pam_handle_t * pamh , int flags , int argc , const char * * argv ) { struct passwd * pw = NULL , pw_s ; const char * user = NULL ; cfg_t cfg_st ; cfg_t * cfg = & cfg_st ; char buffer [ BUFSIZE ] ; char * buf = NULL ; char * authfile_dir ; size_t authfile_dir_len ; int pgu_ret , gpn_ret ; int retval = PAM_IGNORE ; device_t * devices = NULL ; unsigned n_devices = 0 ; <S2SV_StartBug> int openasuser ; <S2SV_EndBug> int should_free_origin = 0 ; int should_free_appid = 0 ; int should_free_auth_file = 0 ; <S2SV_StartBug> int should_free_authpending_file = 0 ; <S2SV_EndBug> parse_cfg ( flags , argc , argv , cfg ) ; if ( ! cfg -> origin ) { strcpy ( buffer , DEFAULT_ORIGIN_PREFIX ) ; if ( gethostname ( buffer + strlen ( DEFAULT_ORIGIN_PREFIX ) , BUFSIZE - strlen ( DEFAULT_ORIGIN_PREFIX ) ) == - 1 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>host<S2SV_blank>name\" ) ; goto done ; } DBG ( \"Origin<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>using<S2SV_blank>\\\\\"%s\\\\\"\" , buffer ) ; cfg -> origin = strdup ( buffer ) ; if ( ! cfg -> origin ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto done ; } else { should_free_origin = 1 ; } } if ( ! cfg -> appid ) { DBG ( \"Appid<S2SV_blank>not<S2SV_blank>specified,<S2SV_blank>using<S2SV_blank>the<S2SV_blank>same<S2SV_blank>value<S2SV_blank>of<S2SV_blank>origin<S2SV_blank>(%s)\" , cfg -> origin ) ; cfg -> appid = strdup ( cfg -> origin ) ; if ( ! cfg -> appid ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) goto done ; } else { should_free_appid = 1 ; } } if ( cfg -> max_devs == 0 ) { DBG ( \"Maximum<S2SV_blank>devices<S2SV_blank>number<S2SV_blank>not<S2SV_blank>set.<S2SV_blank>Using<S2SV_blank>default<S2SV_blank>(%d)\" , MAX_DEVS ) ; cfg -> max_devs = MAX_DEVS ; } devices = malloc ( sizeof ( device_t ) * cfg -> max_devs ) ; if ( ! devices ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } pgu_ret = pam_get_user ( pamh , & user , NULL ) ; if ( pgu_ret != PAM_SUCCESS || user == NULL ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>access<S2SV_blank>user<S2SV_blank>%s\" , user ) ; retval = PAM_CONV_ERR ; goto done ; } DBG ( \"Requesting<S2SV_blank>authentication<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\" , user ) ; gpn_ret = getpwnam_r ( user , & pw_s , buffer , sizeof ( buffer ) , & pw ) ; if ( gpn_ret != 0 || pw == NULL || pw -> pw_dir == NULL || pw -> pw_dir [ 0 ] != '/' ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>credentials<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s,<S2SV_blank>(%s)\" , user , strerror ( errno ) ) ; retval = PAM_USER_UNKNOWN ; goto done ; } DBG ( \"Found<S2SV_blank>user<S2SV_blank>%s\" , user ) ; DBG ( \"Home<S2SV_blank>directory<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>%s\" , user , pw -> pw_dir ) ; if ( ! cfg -> auth_file ) { buf = NULL ; authfile_dir = secure_getenv ( DEFAULT_AUTHFILE_DIR_VAR ) ; if ( ! authfile_dir ) { DBG ( \"Variable<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>set.<S2SV_blank>Using<S2SV_blank>default<S2SV_blank>value<S2SV_blank>($HOME/.config/)\" , DEFAULT_AUTHFILE_DIR_VAR ) ; authfile_dir_len = strlen ( pw -> pw_dir ) + strlen ( \"/.config\" ) + strlen ( DEFAULT_AUTHFILE ) + 1 ; buf = malloc ( sizeof ( char ) * ( authfile_dir_len ) ) ; if ( ! buf ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } <S2SV_StartBug> snprintf ( buf , authfile_dir_len , <S2SV_EndBug> \"%s/.config%s\" , pw -> pw_dir , DEFAULT_AUTHFILE ) ; } else { DBG ( \"Variable<S2SV_blank>%s<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%s\" , DEFAULT_AUTHFILE_DIR_VAR , authfile_dir ) ; authfile_dir_len = strlen ( authfile_dir ) + strlen ( DEFAULT_AUTHFILE ) + 1 ; buf = malloc ( sizeof ( char ) * ( authfile_dir_len ) ) ; if ( ! buf ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; retval = PAM_IGNORE ; goto done ; } snprintf ( buf , authfile_dir_len , \"%s%s\" , authfile_dir , DEFAULT_AUTHFILE ) ; <S2SV_StartBug> } <S2SV_EndBug> DBG ( \"Using<S2SV_blank>default<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , buf ) ; <S2SV_StartBug> cfg -> auth_file = buf ; <S2SV_EndBug> should_free_auth_file = 1 ; buf = NULL ; } else { DBG ( \"Using<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , cfg -> auth_file ) ; } <S2SV_StartBug> openasuser = geteuid ( ) == 0 && cfg -> openasuser ; <S2SV_EndBug> <S2SV_StartBug> if ( openasuser ) { <S2SV_EndBug> <S2SV_StartBug> if ( seteuid ( pw_s . pw_uid ) ) { <S2SV_EndBug> <S2SV_StartBug> DBG ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>user<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw_s . pw_uid ) ; <S2SV_EndBug> retval = PAM_IGNORE ; goto done ; } <S2SV_StartBug> DBG ( \"Switched<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw_s . pw_uid ) ; <S2SV_EndBug> } retval = get_devices_from_authfile ( cfg -> auth_file , user , cfg -> max_devs , cfg -> debug , cfg -> debug_file , devices , & n_devices ) ; if ( openasuser ) { <S2SV_StartBug> if ( seteuid ( 0 ) ) { <S2SV_EndBug> DBG ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>0\" ) ; retval = PAM_IGNORE ; goto done ; } <S2SV_StartBug> DBG ( \"Switched<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>0\" ) ; <S2SV_EndBug> } if ( retval != 1 ) { n_devices = 0 ; } if ( n_devices == 0 ) { if ( cfg -> nouserok ) { DBG ( \"Found<S2SV_blank>no<S2SV_blank>devices<S2SV_blank>but<S2SV_blank>nouserok<S2SV_blank>specified.<S2SV_blank>Skipping<S2SV_blank>authentication\" ) ; retval = PAM_SUCCESS ; goto done ; } else if ( retval != 1 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>devices<S2SV_blank>from<S2SV_blank>file<S2SV_blank>%s\" , cfg -> auth_file ) ; retval = PAM_AUTHINFO_UNAVAIL ; goto done ; } else { DBG ( \"Found<S2SV_blank>no<S2SV_blank>devices.<S2SV_blank>Aborting.\" ) ; retval = PAM_AUTHINFO_UNAVAIL ; goto done ; } } if ( ! cfg -> authpending_file ) { int actual_size = snprintf ( buffer , BUFSIZE , DEFAULT_AUTHPENDING_FILE_PATH , getuid ( ) ) ; if ( actual_size >= 0 && actual_size < BUFSIZE ) { cfg -> authpending_file = strdup ( buffer ) ; } if ( ! cfg -> authpending_file ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>the<S2SV_blank>authpending_file,<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications<S2SV_blank>will<S2SV_blank>not<S2SV_blank>be<S2SV_blank>emitted\" ) ; } else { should_free_authpending_file = 1 ; } } else { if ( strlen ( cfg -> authpending_file ) == 0 ) { DBG ( \"authpending_file<S2SV_blank>is<S2SV_blank>set<S2SV_blank>to<S2SV_blank>an<S2SV_blank>empty<S2SV_blank>value,<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications<S2SV_blank>will<S2SV_blank>be<S2SV_blank>disabled\" ) ; cfg -> authpending_file = NULL ; } } int authpending_file_descriptor = - 1 ; if ( cfg -> authpending_file ) { DBG ( \"Using<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>for<S2SV_blank>emitting<S2SV_blank>touch<S2SV_blank>request<S2SV_blank>notifications\" , cfg -> authpending_file ) ; authpending_file_descriptor = open ( cfg -> authpending_file , O_RDONLY | O_CREAT | O_CLOEXEC | O_NOFOLLOW | O_NOCTTY , 0664 ) ; if ( authpending_file_descriptor < 0 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>emit<S2SV_blank>\\'authentication<S2SV_blank>started\\'<S2SV_blank>notification<S2SV_blank>by<S2SV_blank>opening<S2SV_blank>the<S2SV_blank>file<S2SV_blank>\\'%s\\',<S2SV_blank>(%s)\" , cfg -> authpending_file , strerror ( errno ) ) ; } } if ( cfg -> manual == 0 ) { if ( cfg -> interactive ) { converse ( pamh , PAM_PROMPT_ECHO_ON , cfg -> prompt != NULL ? cfg -> prompt : DEFAULT_PROMPT ) ; } retval = do_authentication ( cfg , devices , n_devices , pamh ) ; } else { retval = do_manual_authentication ( cfg , devices , n_devices , pamh ) ; } if ( authpending_file_descriptor >= 0 ) { if ( close ( authpending_file_descriptor ) < 0 ) { DBG ( \"Unable<S2SV_blank>to<S2SV_blank>emit<S2SV_blank>\\'authentication<S2SV_blank>stopped\\'<S2SV_blank>notification<S2SV_blank>by<S2SV_blank>closing<S2SV_blank>the<S2SV_blank>file<S2SV_blank>\\'%s\\',<S2SV_blank>(%s)\" , cfg -> authpending_file , strerror ( errno ) ) ; } } if ( retval != 1 ) { DBG ( \"do_authentication<S2SV_blank>returned<S2SV_blank>%d\" , retval ) ; retval = PAM_AUTH_ERR ; goto done ; } retval = PAM_SUCCESS ; done : free_devices ( devices , n_devices ) ; if ( buf ) { free ( buf ) ; buf = NULL ; } if ( should_free_origin ) { free ( ( char * ) cfg -> origin ) ; cfg -> origin = NULL ; } if ( should_free_appid ) { free ( ( char * ) cfg -> appid ) ; cfg -> appid = NULL ; } if ( should_free_auth_file ) { free ( ( char * ) cfg -> auth_file ) ; cfg -> auth_file = NULL ; } if ( should_free_authpending_file ) { free ( ( char * ) cfg -> authpending_file ) ; cfg -> authpending_file = NULL ; } if ( cfg -> alwaysok && retval != PAM_SUCCESS ) { DBG ( \"alwaysok<S2SV_blank>needed<S2SV_blank>(otherwise<S2SV_blank>return<S2SV_blank>with<S2SV_blank>%d)\" , retval ) ; retval = PAM_SUCCESS ; } DBG ( \"done.<S2SV_blank>[%s]\" , pam_strerror ( pamh , retval ) ) ; if ( cfg -> is_custom_debug_file ) { fclose ( cfg -> debug_file ) ; } return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int openasuser = 0 <S2SV_ModStart> should_free_authpending_file = 0 ; PAM_MODUTIL_DEF_PRIVS ( privs ) <S2SV_ModStart> done ; } openasuser = geteuid ( ) == 0 ? 1 : 0 ; <S2SV_ModStart> DEFAULT_AUTHFILE ) ; if ( ! openasuser ) { DBG ( \"WARNING:<S2SV_blank>not<S2SV_blank>dropping<S2SV_blank>privileges<S2SV_blank>when<S2SV_blank>reading<S2SV_blank>%s,<S2SV_blank>please<S2SV_blank>\" \"consider<S2SV_blank>setting<S2SV_blank>openasuser=1<S2SV_blank>in<S2SV_blank>the<S2SV_blank>module<S2SV_blank>configuration\" <S2SV_ModEnd> , buf ) <S2SV_ModStart> buf ) ; } } DBG ( \"Using<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>%s\" , buf ) ; <S2SV_ModStart> ) ; } if ( ! openasuser ) { openasuser <S2SV_ModEnd> = geteuid ( <S2SV_ModStart> -> openasuser ; } <S2SV_ModStart> openasuser ) { DBG ( \"Dropping<S2SV_blank>privileges\" ) ; if ( pam_modutil_drop_priv ( pamh , & privs , pw <S2SV_ModEnd> ) ) { <S2SV_ModStart> ( \"Unable<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>user<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw -> <S2SV_ModEnd> pw_uid ) ; <S2SV_ModStart> ( \"Switched<S2SV_blank>to<S2SV_blank>uid<S2SV_blank>%i\" , pw -> <S2SV_ModEnd> pw_uid ) ; <S2SV_ModStart> { if ( pam_modutil_regain_priv ( pamh , & privs ) ) { DBG ( \"could<S2SV_blank>not<S2SV_blank>restore<S2SV_blank>privileges\" <S2SV_ModEnd> ) ; retval <S2SV_ModStart> } DBG ( \"Restored<S2SV_blank>privileges\" <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-863(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18397\n\n```\nCWE-863 static int userfaultfd_register ( struct userfaultfd_ctx * ctx , unsigned long arg ) { struct mm_struct * mm = ctx -> mm ; struct vm_area_struct * vma , * prev , * cur ; int ret ; struct uffdio_register uffdio_register ; struct uffdio_register __user * user_uffdio_register ; unsigned long vm_flags , new_flags ; bool found ; bool basic_ioctls ; unsigned long start , end , vma_end ; user_uffdio_register = ( struct uffdio_register __user * ) arg ; ret = - EFAULT ; if ( copy_from_user ( & uffdio_register , user_uffdio_register , sizeof ( uffdio_register ) - sizeof ( __u64 ) ) ) goto out ; ret = - EINVAL ; if ( ! uffdio_register . mode ) goto out ; if ( uffdio_register . mode & ~ ( UFFDIO_REGISTER_MODE_MISSING | UFFDIO_REGISTER_MODE_WP ) ) goto out ; vm_flags = 0 ; if ( uffdio_register . mode & UFFDIO_REGISTER_MODE_MISSING ) vm_flags |= VM_UFFD_MISSING ; if ( uffdio_register . mode & UFFDIO_REGISTER_MODE_WP ) { vm_flags |= VM_UFFD_WP ; ret = - EINVAL ; goto out ; } ret = validate_range ( mm , uffdio_register . range . start , uffdio_register . range . len ) ; if ( ret ) goto out ; start = uffdio_register . range . start ; end = start + uffdio_register . range . len ; ret = - ENOMEM ; if ( ! mmget_not_zero ( mm ) ) goto out ; down_write ( & mm -> mmap_sem ) ; vma = find_vma_prev ( mm , start , & prev ) ; if ( ! vma ) goto out_unlock ; ret = - EINVAL ; if ( vma -> vm_start >= end ) goto out_unlock ; if ( is_vm_hugetlb_page ( vma ) ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( vma ) ; if ( start & ( vma_hpagesize - 1 ) ) goto out_unlock ; } found = false ; basic_ioctls = false ; for ( cur = vma ; cur && cur -> vm_start < end ; cur = cur -> vm_next ) { cond_resched ( ) ; BUG_ON ( ! ! cur -> vm_userfaultfd_ctx . ctx ^ ! ! ( cur -> vm_flags & ( VM_UFFD_MISSING | VM_UFFD_WP ) ) ) ; ret = - EINVAL ; if ( ! vma_can_userfault ( cur ) ) goto out_unlock ; <S2SV_StartBug> if ( is_vm_hugetlb_page ( cur ) && end <= cur -> vm_end && <S2SV_EndBug> end > cur -> vm_start ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( cur ) ; ret = - EINVAL ; if ( end & ( vma_hpagesize - 1 ) ) goto out_unlock ; } ret = - EBUSY ; if ( cur -> vm_userfaultfd_ctx . ctx && cur -> vm_userfaultfd_ctx . ctx != ctx ) goto out_unlock ; if ( is_vm_hugetlb_page ( cur ) ) basic_ioctls = true ; found = true ; } BUG_ON ( ! found ) ; if ( vma -> vm_start < start ) prev = vma ; ret = 0 ; do { cond_resched ( ) ; BUG_ON ( ! vma_can_userfault ( vma ) ) ; BUG_ON ( vma -> vm_userfaultfd_ctx . ctx && <S2SV_StartBug> vma -> vm_userfaultfd_ctx . ctx != ctx ) ; <S2SV_EndBug> if ( vma -> vm_userfaultfd_ctx . ctx == ctx && ( vma -> vm_flags & vm_flags ) == vm_flags ) goto skip ; if ( vma -> vm_start > start ) start = vma -> vm_start ; vma_end = min ( end , vma -> vm_end ) ; new_flags = ( vma -> vm_flags & ~ vm_flags ) | vm_flags ; prev = vma_merge ( mm , prev , start , vma_end , new_flags , vma -> anon_vma , vma -> vm_file , vma -> vm_pgoff , vma_policy ( vma ) , ( ( struct vm_userfaultfd_ctx ) { ctx } ) ) ; if ( prev ) { vma = prev ; goto next ; } if ( vma -> vm_start < start ) { ret = split_vma ( mm , vma , start , 1 ) ; if ( ret ) break ; } if ( vma -> vm_end > end ) { ret = split_vma ( mm , vma , end , 0 ) ; if ( ret ) break ; } next : vma -> vm_flags = new_flags ; vma -> vm_userfaultfd_ctx . ctx = ctx ; skip : prev = vma ; start = vma -> vm_end ; vma = vma -> vm_next ; } while ( vma && vma -> vm_start < end ) ; out_unlock : up_write ( & mm -> mmap_sem ) ; mmput ( mm ) ; if ( ! ret ) { if ( put_user ( basic_ioctls ? UFFD_API_RANGE_IOCTLS_BASIC : UFFD_API_RANGE_IOCTLS , & user_uffdio_register -> ioctls ) ) ret = - EFAULT ; } out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out_unlock ; ret = - EPERM ; if ( unlikely ( ! ( cur -> vm_flags & VM_MAYWRITE ) ) ) goto out_unlock ; <S2SV_ModStart> ctx != ctx ) ; WARN_ON ( ! ( vma -> vm_flags & VM_MAYWRITE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 static int __reiserfs_set_acl ( struct reiserfs_transaction_handle * th , struct inode * inode , int type , struct posix_acl * acl ) { char * name ; void * value = NULL ; size_t size = 0 ; int error ; switch ( type ) { case ACL_TYPE_ACCESS : name = XATTR_NAME_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; else { if ( error == 0 ) acl = NULL ; } } break ; case ACL_TYPE_DEFAULT : name = XATTR_NAME_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = reiserfs_posix_acl_to_disk ( acl , & size ) ; if ( IS_ERR ( value ) ) return ( int ) PTR_ERR ( value ) ; } error = reiserfs_xattr_set_handle ( th , inode , name , value , size , 0 ) ; if ( error == - ENODATA ) { error = 0 ; if ( type == ACL_TYPE_ACCESS ) { inode -> i_ctime = CURRENT_TIME_SEC ; mark_inode_dirty ( inode ) ; } } kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( error ) return error ; <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8767\n\n```\nCWE-362 void sctp_generate_t3_rtx_event ( unsigned long peer ) { int error ; struct sctp_transport * transport = ( struct sctp_transport * ) peer ; struct sctp_association * asoc = transport -> asoc ; <S2SV_StartBug> struct net * net = sock_net ( asoc -> base . sk ) ; <S2SV_EndBug> <S2SV_StartBug> bh_lock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> <S2SV_StartBug> if ( sock_owned_by_user ( asoc -> base . sk ) ) { <S2SV_EndBug> pr_debug ( \"%s:<S2SV_blank>sock<S2SV_blank>is<S2SV_blank>busy\\\\n\" , __func__ ) ; if ( ! mod_timer ( & transport -> T3_rtx_timer , jiffies + ( HZ / 20 ) ) ) sctp_transport_hold ( transport ) ; goto out_unlock ; } if ( transport -> dead ) goto out_unlock ; error = sctp_do_sm ( net , SCTP_EVENT_T_TIMEOUT , SCTP_ST_TIMEOUT ( SCTP_EVENT_TIMEOUT_T3_RTX ) , asoc -> state , asoc -> ep , asoc , transport , GFP_ATOMIC ) ; if ( error ) <S2SV_StartBug> asoc -> base . sk -> sk_err = - error ; <S2SV_EndBug> out_unlock : <S2SV_StartBug> bh_unlock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> sctp_transport_put ( transport ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> asoc ; struct sock * sk = asoc -> base . sk ; struct <S2SV_ModStart> = sock_net ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ; bh_lock_sock ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ( sock_owned_by_user ( <S2SV_ModEnd> sk ) ) <S2SV_ModStart> ( error ) <S2SV_ModEnd> sk -> sk_err <S2SV_ModStart> : bh_unlock_sock ( <S2SV_ModEnd> sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000494\n\n```\nCWE-119 void ParseNameValue ( const char * buffer , int bufsize , struct NameValueParserData * data ) { struct xmlparser parser ; <S2SV_StartBug> data -> l_head = NULL ; <S2SV_EndBug> data -> portListing = NULL ; data -> portListingLength = 0 ; parser . xmlstart = buffer ; parser . xmlsize = bufsize ; parser . data = data ; parser . starteltfunc = NameValueParserStartElt ; parser . endeltfunc = NameValueParserEndElt ; parser . datafunc = NameValueParserGetData ; parser . attfunc = 0 ; parsexml ( & parser ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> xmlparser parser ; memset ( data , 0 , sizeof ( struct NameValueParserData ) ) <S2SV_ModEnd> ; parser .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11523\n\n```\nCWE-835 static Image * ReadTXTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char colorspace [ MagickPathExtent ] , text [ MagickPathExtent ] ; Image * image ; long x_offset , y_offset ; PixelInfo pixel ; MagickBooleanType status ; QuantumAny range ; register ssize_t i , x ; register Quantum * q ; ssize_t count , type , y ; unsigned long depth , height , max_value , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( text , 0 , sizeof ( text ) ) ; ( void ) ReadBlobString ( image , text ) ; if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { width = 0 ; height = 0 ; max_value = 0 ; * colorspace = '\\\\0' ; count = ( ssize_t ) sscanf ( text + 32 , \"%lu,%lu,%lu,%s\" , & width , & height , & max_value , colorspace ) ; if ( ( count != 4 ) || ( width == 0 ) || ( height == 0 ) || ( max_value == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = width ; image -> rows = height ; for ( depth = 1 ; ( GetQuantumRange ( depth ) + 1 ) < max_value ; depth ++ ) ; image -> depth = depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; LocaleLower ( colorspace ) ; i = ( ssize_t ) strlen ( colorspace ) - 1 ; image -> alpha_trait = UndefinedPixelTrait ; if ( ( i > 0 ) && ( colorspace [ i ] == 'a' ) ) { colorspace [ i ] = '\\\\0' ; image -> alpha_trait = BlendPixelTrait ; } type = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , colorspace ) ; if ( type < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; ( void ) SetImageBackgroundColor ( image , exception ) ; ( void ) SetImageColorspace ( image , ( ColorspaceType ) type , exception ) ; GetPixelInfo ( image , & pixel ) ; range = GetQuantumRange ( image -> depth ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { double alpha , black , blue , green , red ; red = 0.0 ; green = 0.0 ; blue = 0.0 ; black = 0.0 ; alpha = 0.0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( ReadBlobString ( image , text ) == ( char * ) NULL ) break ; switch ( image -> colorspace ) { case GRAYColorspace : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & alpha ) ; green = red ; blue = red ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]\" , & x_offset , & y_offset , & red ) ; green = red ; blue = red ; break ; } case CMYKColorspace : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & black , & alpha ) ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & black ) ; break ; } default : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & alpha ) ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue ) ; break ; } } if ( strchr ( text , '%' ) != ( char * ) NULL ) { red *= 0.01 * range ; green *= 0.01 * range ; blue *= 0.01 * range ; black *= 0.01 * range ; alpha *= 0.01 * range ; } if ( image -> colorspace == LabColorspace ) { green += ( range + 1 ) / 2.0 ; blue += ( range + 1 ) / 2.0 ; } pixel . red = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( red + 0.5 ) , range ) ; pixel . green = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( green + 0.5 ) , range ) ; pixel . blue = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( blue + 0.5 ) , range ) ; pixel . black = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( black + 0.5 ) , range ) ; pixel . alpha = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( alpha + 0.5 ) , range ) ; q = GetAuthenticPixels ( image , ( ssize_t ) x_offset , ( ssize_t ) y_offset , 1 , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) continue ; SetPixelViaPixelInfo ( image , & pixel , q ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } } <S2SV_StartBug> ( void ) ReadBlobString ( image , text ) ; <S2SV_EndBug> if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1479\n\n```\nCWE-399 static int inotify_release ( struct inode * ignored , struct file * file ) { struct fsnotify_group * group = file -> private_data ; <S2SV_StartBug> struct user_struct * user = group -> inotify_data . user ; <S2SV_EndBug> pr_debug ( \"%s:<S2SV_blank>group=%p\\\\n\" , __func__ , group ) ; fsnotify_clear_marks_by_group ( group ) ; fsnotify_put_group ( group ) ; <S2SV_StartBug> atomic_dec ( & user -> inotify_devs ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private_data ; <S2SV_ModEnd> pr_debug ( \"%s:<S2SV_blank>group=%p\\\\n\" <S2SV_ModStart> group ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12664\n\n```\nCWE-772 static Image * ReadPALMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; IndexPacket index ; MagickBooleanType status ; MagickOffsetType totalOffset , seekNextDepth ; MagickPixelPacket transpix ; register IndexPacket * indexes ; register ssize_t i , x ; register PixelPacket * q ; size_t bytes_per_row , flags , bits_per_pixel , version , nextDepthOffset , transparentIndex , compressionType , byte , mask , redbits , greenbits , bluebits , one , pad , size , bit ; ssize_t count , y ; unsigned char <S2SV_StartBug> * lastrow , <S2SV_EndBug> * one_row , * ptr ; unsigned short color16 ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { ( void ) DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } totalOffset = 0 ; do { image -> columns = ReadBlobMSBShort ( image ) ; image -> rows = ReadBlobMSBShort ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } bytes_per_row = ReadBlobMSBShort ( image ) ; flags = ReadBlobMSBShort ( image ) ; bits_per_pixel = ( size_t ) ReadBlobByte ( image ) ; if ( ( bits_per_pixel != 1 ) && ( bits_per_pixel != 2 ) && ( bits_per_pixel != 4 ) && ( bits_per_pixel != 8 ) && ( bits_per_pixel != 16 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; version = ( size_t ) ReadBlobByte ( image ) ; if ( ( version != 0 ) && ( version != 1 ) && ( version != 2 ) ) ThrowReaderException ( CorruptImageError , \"FileFormatVersionMismatch\" ) ; nextDepthOffset = ( size_t ) ReadBlobMSBShort ( image ) ; transparentIndex = ( size_t ) ReadBlobByte ( image ) ; compressionType = ( size_t ) ReadBlobByte ( image ) ; if ( ( compressionType != PALM_COMPRESSION_NONE ) && ( compressionType != PALM_COMPRESSION_SCANLINE ) && ( compressionType != PALM_COMPRESSION_RLE ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; pad = ReadBlobMSBShort ( image ) ; ( void ) pad ; one = 1 ; if ( ( bits_per_pixel < 16 ) && ( AcquireImageColormap ( image , one << bits_per_pixel ) == MagickFalse ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; GetMagickPixelPacket ( image , & transpix ) ; if ( bits_per_pixel == 16 ) { redbits = ( size_t ) ReadBlobByte ( image ) ; ( void ) redbits ; greenbits = ( size_t ) ReadBlobByte ( image ) ; ( void ) greenbits ; bluebits = ( size_t ) ReadBlobByte ( image ) ; ( void ) bluebits ; ReadBlobByte ( image ) ; ReadBlobByte ( image ) ; transpix . red = ( MagickRealType ) ( QuantumRange * ReadBlobByte ( image ) / 31 ) ; transpix . green = ( MagickRealType ) ( QuantumRange * ReadBlobByte ( image ) / 63 ) ; transpix . blue = ( MagickRealType ) ( QuantumRange * ReadBlobByte ( image ) / 31 ) ; } if ( bits_per_pixel == 8 ) { IndexPacket index ; if ( flags & PALM_HAS_COLORMAP_FLAG ) { count = ( ssize_t ) ReadBlobMSBShort ( image ) ; for ( i = 0 ; i < ( ssize_t ) count ; i ++ ) { ReadBlobByte ( image ) ; index = ConstrainColormapIndex ( image , ( size_t ) ( 255 - i ) ) ; image -> colormap [ ( int ) index ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ ( int ) index ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ ( int ) index ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } } else for ( i = 0 ; i < ( ssize_t ) ( 1L << bits_per_pixel ) ; i ++ ) { index = ConstrainColormapIndex ( image , ( size_t ) ( 255 - i ) ) ; image -> colormap [ ( int ) index ] . red = ScaleCharToQuantum ( PalmPalette [ i ] [ 0 ] ) ; image -> colormap [ ( int ) index ] . green = ScaleCharToQuantum ( PalmPalette [ i ] [ 1 ] ) ; image -> colormap [ ( int ) index ] . blue = ScaleCharToQuantum ( PalmPalette [ i ] [ 2 ] ) ; } } if ( flags & PALM_IS_COMPRESSED_FLAG ) size = ReadBlobMSBShort ( image ) ; ( void ) size ; image -> storage_class = DirectClass ; if ( bits_per_pixel < 16 ) { image -> storage_class = PseudoClass ; image -> depth = 8 ; } if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( image ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } one_row = ( unsigned char * ) AcquireQuantumMemory ( MagickMax ( bytes_per_row , 2 * image -> columns ) , sizeof ( * one_row ) ) ; if ( one_row == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> lastrow = ( unsigned char * ) NULL ; <S2SV_EndBug> if ( compressionType == PALM_COMPRESSION_SCANLINE ) { <S2SV_StartBug> lastrow = ( unsigned char * ) AcquireQuantumMemory ( MagickMax ( bytes_per_row , <S2SV_EndBug> <S2SV_StartBug> 2 * image -> columns ) , sizeof ( * lastrow ) ) ; <S2SV_EndBug> if ( lastrow == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } mask = ( size_t ) ( 1U << bits_per_pixel ) - 1 ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { if ( ( flags & PALM_IS_COMPRESSED_FLAG ) == 0 ) { image -> compression = NoCompression ; count = ReadBlob ( image , bytes_per_row , one_row ) ; if ( count != ( ssize_t ) bytes_per_row ) break ; } else { if ( compressionType == PALM_COMPRESSION_RLE ) { image -> compression = RLECompression ; for ( i = 0 ; i < ( ssize_t ) bytes_per_row ; ) { count = ( ssize_t ) ReadBlobByte ( image ) ; if ( count < 0 ) break ; count = MagickMin ( count , ( ssize_t ) bytes_per_row - i ) ; byte = ( size_t ) ReadBlobByte ( image ) ; ( void ) ResetMagickMemory ( one_row + i , ( int ) byte , ( size_t ) count ) ; i += count ; } } else if ( compressionType == PALM_COMPRESSION_SCANLINE ) { size_t one ; one = 1 ; image -> compression = FaxCompression ; for ( i = 0 ; i < ( ssize_t ) bytes_per_row ; i += 8 ) { count = ( ssize_t ) ReadBlobByte ( image ) ; if ( count < 0 ) break ; byte = ( size_t ) MagickMin ( ( ssize_t ) bytes_per_row - i , 8 ) ; for ( bit = 0 ; bit < byte ; bit ++ ) { if ( ( y == 0 ) || ( count & ( one << ( 7 - bit ) ) ) ) one_row [ i + bit ] = ( unsigned char ) ReadBlobByte ( image ) ; else <S2SV_StartBug> one_row [ i + bit ] = lastrow [ i + bit ] ; <S2SV_EndBug> } } <S2SV_StartBug> ( void ) CopyMagickMemory ( lastrow , one_row , bytes_per_row ) ; <S2SV_EndBug> } } ptr = one_row ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; if ( bits_per_pixel == 16 ) { if ( image -> columns > ( 2 * bytes_per_row ) ) { one_row = ( unsigned char * ) RelinquishMagickMemory ( one_row ) ; if ( compressionType == PALM_COMPRESSION_SCANLINE ) <S2SV_StartBug> lastrow = ( unsigned char * ) RelinquishMagickMemory ( lastrow ) ; <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { color16 = ( * ptr ++ << 8 ) ; color16 |= ( * ptr ++ ) ; SetPixelRed ( q , ( QuantumRange * ( ( color16 >> 11 ) & 0x1f ) ) / 0x1f ) ; SetPixelGreen ( q , ( QuantumRange * ( ( color16 >> 5 ) & 0x3f ) ) / 0x3f ) ; SetPixelBlue ( q , ( QuantumRange * ( ( color16 >> 0 ) & 0x1f ) ) / 0x1f ) ; SetPixelOpacity ( q , OpaqueOpacity ) ; q ++ ; } } else { bit = 8 - bits_per_pixel ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( ( size_t ) ( ptr - one_row ) >= bytes_per_row ) { one_row = ( unsigned char * ) RelinquishMagickMemory ( one_row ) ; if ( compressionType == PALM_COMPRESSION_SCANLINE ) <S2SV_StartBug> lastrow = ( unsigned char * ) RelinquishMagickMemory ( lastrow ) ; <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } index = ( IndexPacket ) ( mask - ( ( ( * ptr ) & ( mask << bit ) ) >> bit ) ) ; SetPixelIndex ( indexes + x , index ) ; SetPixelRGBO ( q , image -> colormap + ( ssize_t ) index ) ; if ( bit ) bit -= bits_per_pixel ; else { ptr ++ ; bit = 8 - bits_per_pixel ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( flags & PALM_HAS_TRANSPARENCY_FLAG ) { IndexPacket index = ConstrainColormapIndex ( image , ( mask - transparentIndex ) ) ; if ( bits_per_pixel != 16 ) SetMagickPixelPacket ( image , image -> colormap + ( ssize_t ) index , ( const IndexPacket * ) NULL , & transpix ) ; ( void ) TransparentPaintImage ( image , & transpix , ( Quantum ) TransparentOpacity , MagickFalse ) ; } one_row = ( unsigned char * ) RelinquishMagickMemory ( one_row ) ; if ( compressionType == PALM_COMPRESSION_SCANLINE ) <S2SV_StartBug> lastrow = ( unsigned char * ) RelinquishMagickMemory ( lastrow ) ; <S2SV_EndBug> if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( nextDepthOffset != 0 ) { totalOffset += ( MagickOffsetType ) ( nextDepthOffset * 4 ) ; if ( totalOffset >= ( MagickOffsetType ) GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) else seekNextDepth = SeekBlob ( image , totalOffset , SEEK_SET ) ; if ( seekNextDepth != totalOffset ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { ( void ) DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( nextDepthOffset != 0 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned char * last_row <S2SV_ModEnd> , * one_row <S2SV_ModStart> \"MemoryAllocationFailed\" ) ; last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> PALM_COMPRESSION_SCANLINE ) { last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> sizeof ( * last_row ) ) ; if ( last_row <S2SV_ModEnd> == ( unsigned <S2SV_ModStart> bit ] = last_row <S2SV_ModEnd> [ i + <S2SV_ModStart> ) CopyMagickMemory ( last_row <S2SV_ModEnd> , one_row , <S2SV_ModStart> == PALM_COMPRESSION_SCANLINE ) last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> ) RelinquishMagickMemory ( last_row <S2SV_ModEnd> ) ; ThrowReaderException <S2SV_ModStart> == PALM_COMPRESSION_SCANLINE ) last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> ) RelinquishMagickMemory ( last_row <S2SV_ModEnd> ) ; ThrowReaderException <S2SV_ModStart> == PALM_COMPRESSION_SCANLINE ) last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> ) RelinquishMagickMemory ( last_row <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5355\n\n```\nCWE-000 int main ( argc , argv ) int argc ; char * argv [ ] ; { krb5_data pname_data , tkt_data ; int sock = 0 ; socklen_t l ; int retval ; struct sockaddr_in l_inaddr , f_inaddr ; krb5_creds creds , * new_creds ; krb5_ccache cc ; krb5_data msgtext , msg ; krb5_context context ; krb5_auth_context auth_context = NULL ; # ifndef DEBUG freopen ( \"/tmp/uu-server.log\" , \"w\" , stderr ) ; # endif retval = krb5_init_context ( & context ) ; if ( retval ) { com_err ( argv [ 0 ] , retval , \"while<S2SV_blank>initializing<S2SV_blank>krb5\" ) ; exit ( 1 ) ; } # ifdef DEBUG { int one = 1 ; int acc ; struct servent * sp ; socklen_t namelen = sizeof ( f_inaddr ) ; if ( ( sock = socket ( PF_INET , SOCK_STREAM , 0 ) ) < 0 ) { com_err ( \"uu-server\" , errno , \"creating<S2SV_blank>socket\" ) ; exit ( 3 ) ; } l_inaddr . sin_family = AF_INET ; l_inaddr . sin_addr . s_addr = 0 ; if ( argc == 2 ) { l_inaddr . sin_port = htons ( atoi ( argv [ 1 ] ) ) ; } else { if ( ! ( sp = getservbyname ( \"uu-sample\" , \"tcp\" ) ) ) { com_err ( \"uu-server\" , 0 , \"can\\'t<S2SV_blank>find<S2SV_blank>uu-sample/tcp<S2SV_blank>service\" ) ; exit ( 3 ) ; } l_inaddr . sin_port = sp -> s_port ; } ( void ) setsockopt ( sock , SOL_SOCKET , SO_REUSEADDR , ( char * ) & one , sizeof ( one ) ) ; if ( bind ( sock , ( struct sockaddr * ) & l_inaddr , sizeof ( l_inaddr ) ) ) { com_err ( \"uu-server\" , errno , \"binding<S2SV_blank>socket\" ) ; exit ( 3 ) ; } if ( listen ( sock , 1 ) == - 1 ) { com_err ( \"uu-server\" , errno , \"listening\" ) ; exit ( 3 ) ; } printf ( \"Server<S2SV_blank>started\\\\n\" ) ; fflush ( stdout ) ; if ( ( acc = accept ( sock , ( struct sockaddr * ) & f_inaddr , & namelen ) ) == - 1 ) { com_err ( \"uu-server\" , errno , \"accepting\" ) ; exit ( 3 ) ; } dup2 ( acc , 0 ) ; close ( sock ) ; sock = 0 ; } # endif retval = krb5_read_message ( context , ( krb5_pointer ) & sock , & pname_data ) ; <S2SV_StartBug> if ( retval ) { <S2SV_EndBug> com_err ( \"uu-server\" , retval , \"reading<S2SV_blank>pname\" ) ; return 2 ; } retval = krb5_read_message ( context , ( krb5_pointer ) & sock , & tkt_data ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"reading<S2SV_blank>ticket<S2SV_blank>data\" ) ; return 2 ; } retval = krb5_cc_default ( context , & cc ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"getting<S2SV_blank>credentials<S2SV_blank>cache\" ) ; return 4 ; } memset ( & creds , 0 , sizeof ( creds ) ) ; retval = krb5_cc_get_principal ( context , cc , & creds . client ) ; if ( retval ) { com_err ( \"uu-client\" , retval , \"getting<S2SV_blank>principal<S2SV_blank>name\" ) ; return 6 ; } printf ( \"uu-server:<S2SV_blank>client<S2SV_blank>principal<S2SV_blank>is<S2SV_blank>\\\\\"%s\\\\\".\\\\n\" , pname_data . data ) ; retval = krb5_parse_name ( context , pname_data . data , & creds . server ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"parsing<S2SV_blank>client<S2SV_blank>name\" ) ; return 3 ; } creds . second_ticket = tkt_data ; printf ( \"uu-server:<S2SV_blank>client<S2SV_blank>ticket<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes.\\\\n\" , creds . second_ticket . length ) ; retval = krb5_get_credentials ( context , KRB5_GC_USER_USER , cc , & creds , & new_creds ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"getting<S2SV_blank>user-user<S2SV_blank>ticket\" ) ; return 5 ; } # ifndef DEBUG l = sizeof ( f_inaddr ) ; if ( getpeername ( 0 , ( struct sockaddr * ) & f_inaddr , & l ) == - 1 ) { com_err ( \"uu-server\" , errno , \"getting<S2SV_blank>client<S2SV_blank>address\" ) ; return 6 ; } # endif l = sizeof ( l_inaddr ) ; if ( getsockname ( 0 , ( struct sockaddr * ) & l_inaddr , & l ) == - 1 ) { com_err ( \"uu-server\" , errno , \"getting<S2SV_blank>local<S2SV_blank>address\" ) ; return 6 ; } retval = krb5_auth_con_init ( context , & auth_context ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"making<S2SV_blank>auth_context\" ) ; return 8 ; } retval = krb5_auth_con_setflags ( context , auth_context , KRB5_AUTH_CONTEXT_DO_SEQUENCE ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"initializing<S2SV_blank>the<S2SV_blank>auth_context<S2SV_blank>flags\" ) ; return 8 ; } retval = krb5_auth_con_genaddrs ( context , auth_context , sock , KRB5_AUTH_CONTEXT_GENERATE_LOCAL_FULL_ADDR | KRB5_AUTH_CONTEXT_GENERATE_REMOTE_FULL_ADDR ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"generating<S2SV_blank>addrs<S2SV_blank>for<S2SV_blank>auth_context\" ) ; return 9 ; } # if 1 retval = krb5_mk_req_extended ( context , & auth_context , AP_OPTS_USE_SESSION_KEY , NULL , new_creds , & msg ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"making<S2SV_blank>AP_REQ\" ) ; return 8 ; } retval = krb5_write_message ( context , ( krb5_pointer ) & sock , & msg ) ; # else retval = krb5_sendauth ( context , & auth_context , ( krb5_pointer ) & sock , \"???\" , 0 , 0 , AP_OPTS_MUTUAL_REQUIRED | AP_OPTS_USE_SESSION_KEY , NULL , & creds , cc , NULL , NULL , NULL ) ; # endif if ( retval ) goto cl_short_wrt ; free ( msg . data ) ; msgtext . length = 32 ; msgtext . data = \"Hello,<S2SV_blank>other<S2SV_blank>end<S2SV_blank>of<S2SV_blank>connection.\" ; retval = krb5_mk_safe ( context , auth_context , & msgtext , & msg , NULL ) ; if ( retval ) { com_err ( \"uu-server\" , retval , \"encoding<S2SV_blank>message<S2SV_blank>to<S2SV_blank>client\" ) ; return 6 ; } retval = krb5_write_message ( context , ( krb5_pointer ) & sock , & msg ) ; if ( retval ) { cl_short_wrt : com_err ( \"uu-server\" , retval , \"writing<S2SV_blank>message<S2SV_blank>to<S2SV_blank>client\" ) ; return 7 ; } krb5_free_data_contents ( context , & msg ) ; krb5_free_data_contents ( context , & pname_data ) ; krb5_free_cred_contents ( context , & creds ) ; krb5_free_creds ( context , new_creds ) ; krb5_cc_close ( context , cc ) ; krb5_auth_con_free ( context , auth_context ) ; krb5_free_context ( context ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( retval || pname_data . length == 0 || pname_data . data [ pname_data . length - 1 ] != '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 <S2SV_StartBug> static void mark_object ( struct object * obj , struct strbuf * path , <S2SV_EndBug> const char * name , void * data ) { update_progress ( data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 <S2SV_StartBug> void kvm_lapic_set_vapic_addr ( struct kvm_vcpu * vcpu , gpa_t vapic_addr ) <S2SV_EndBug> { <S2SV_StartBug> vcpu -> arch . apic -> vapic_addr = vapic_addr ; <S2SV_EndBug> if ( vapic_addr ) __set_bit ( KVM_APIC_CHECK_VAPIC , & vcpu -> arch . apic_attention ) ; <S2SV_StartBug> else <S2SV_EndBug> __clear_bit ( KVM_APIC_CHECK_VAPIC , & vcpu -> arch . apic_attention ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> int <S2SV_ModEnd> kvm_lapic_set_vapic_addr ( struct <S2SV_ModStart> vapic_addr ) { if ( vapic_addr ) { if ( kvm_gfn_to_hva_cache_init ( vcpu -> kvm , & <S2SV_ModStart> . apic -> vapic_cache , vapic_addr , sizeof ( u32 ) ) ) return - EINVAL ; <S2SV_ModEnd> __set_bit ( KVM_APIC_CHECK_VAPIC <S2SV_ModStart> apic_attention ) ; } else { <S2SV_ModEnd> __clear_bit ( KVM_APIC_CHECK_VAPIC <S2SV_ModStart> ) ; } vcpu -> arch . apic -> vapic_addr = vapic_addr ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_get_last_ref_updates ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctrl_id , va_list args ) { <S2SV_EndBug> int * const update_info = va_arg ( args , int * ) ; <S2SV_StartBug> if ( update_info ) { <S2SV_EndBug> <S2SV_StartBug> if ( ctx -> pbi ) <S2SV_EndBug> <S2SV_StartBug> * update_info = ctx -> pbi -> refresh_frame_flags ; <S2SV_EndBug> else return VPX_CODEC_ERROR ; return VPX_CODEC_OK ; } else { <S2SV_StartBug> return VPX_CODEC_INVALID_PARAM ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> ; if ( ctx -> frame_parallel_decode ) { set_error_detail ( ctx , \"Not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>frame<S2SV_blank>parallel<S2SV_blank>decode\" ) ; return VPX_CODEC_INCAPABLE ; } if ( <S2SV_ModStart> ( ctx -> frame_workers ) { VPxWorker * const worker = ctx -> frame_workers ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; <S2SV_ModEnd> * update_info = <S2SV_ModStart> * update_info = frame_worker_data <S2SV_ModEnd> -> pbi -> <S2SV_ModStart> pbi -> refresh_frame_flags <S2SV_ModEnd> ; return VPX_CODEC_OK <S2SV_ModStart> else { return VPX_CODEC_ERROR <S2SV_ModEnd> ; } } <S2SV_ModStart> ; } } return VPX_CODEC_INVALID_PARAM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2016\n\n```\nCWE-269 void virtio_config_writel ( VirtIODevice * vdev , uint32_t addr , uint32_t data ) { VirtioDeviceClass * k = VIRTIO_DEVICE_GET_CLASS ( vdev ) ; uint32_t val = data ; <S2SV_StartBug> if ( addr > ( vdev -> config_len - sizeof ( val ) ) ) <S2SV_EndBug> return ; stl_p ( vdev -> config + addr , val ) ; if ( k -> set_config ) { k -> set_config ( vdev , vdev -> config ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( addr + <S2SV_ModEnd> sizeof ( val <S2SV_ModStart> ( val ) > vdev -> config_len ) { return ; } <S2SV_ModEnd> stl_p ( vdev\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20847\n\n```\nCWE-190 void opj_get_all_encoding_parameters ( const opj_image_t * p_image , const opj_cp_t * p_cp , OPJ_UINT32 tileno , OPJ_INT32 * p_tx0 , OPJ_INT32 * p_tx1 , OPJ_INT32 * p_ty0 , OPJ_INT32 * p_ty1 , OPJ_UINT32 * p_dx_min , OPJ_UINT32 * p_dy_min , OPJ_UINT32 * p_max_prec , OPJ_UINT32 * p_max_res , OPJ_UINT32 * * p_resolutions ) { OPJ_UINT32 compno , resno ; const opj_tcp_t * tcp = 00 ; const opj_tccp_t * l_tccp = 00 ; const opj_image_comp_t * l_img_comp = 00 ; OPJ_UINT32 * lResolutionPtr ; OPJ_UINT32 p , q ; assert ( p_cp != 00 ) ; assert ( p_image != 00 ) ; assert ( tileno < p_cp -> tw * p_cp -> th ) ; tcp = & p_cp -> tcps [ tileno ] ; l_tccp = tcp -> tccps ; l_img_comp = p_image -> comps ; p = tileno % p_cp -> tw ; q = tileno / p_cp -> tw ; <S2SV_StartBug> * p_tx0 = opj_int_max ( ( OPJ_INT32 ) ( p_cp -> tx0 + p * p_cp -> tdx ) , ( OPJ_INT32 ) p_image -> x0 ) ; <S2SV_EndBug> <S2SV_StartBug> * p_tx1 = opj_int_min ( ( OPJ_INT32 ) ( p_cp -> tx0 + ( p + 1 ) * p_cp -> tdx ) , ( OPJ_INT32 ) p_image -> x1 ) ; <S2SV_EndBug> <S2SV_StartBug> * p_ty0 = opj_int_max ( ( OPJ_INT32 ) ( p_cp -> ty0 + q * p_cp -> tdy ) , ( OPJ_INT32 ) p_image -> y0 ) ; <S2SV_EndBug> <S2SV_StartBug> * p_ty1 = opj_int_min ( ( OPJ_INT32 ) ( p_cp -> ty0 + ( q + 1 ) * p_cp -> tdy ) , ( OPJ_INT32 ) p_image -> y1 ) ; <S2SV_EndBug> * p_max_prec = 0 ; * p_max_res = 0 ; * p_dx_min = 0x7fffffff ; * p_dy_min = 0x7fffffff ; for ( compno = 0 ; compno < p_image -> numcomps ; ++ compno ) { OPJ_UINT32 l_level_no ; OPJ_INT32 l_rx0 , l_ry0 , l_rx1 , l_ry1 ; OPJ_INT32 l_px0 , l_py0 , l_px1 , py1 ; OPJ_UINT32 l_product ; OPJ_INT32 l_tcx0 , l_tcy0 , l_tcx1 , l_tcy1 ; OPJ_UINT32 l_pdx , l_pdy , l_pw , l_ph ; lResolutionPtr = p_resolutions [ compno ] ; l_tcx0 = opj_int_ceildiv ( * p_tx0 , ( OPJ_INT32 ) l_img_comp -> dx ) ; l_tcy0 = opj_int_ceildiv ( * p_ty0 , ( OPJ_INT32 ) l_img_comp -> dy ) ; l_tcx1 = opj_int_ceildiv ( * p_tx1 , ( OPJ_INT32 ) l_img_comp -> dx ) ; l_tcy1 = opj_int_ceildiv ( * p_ty1 , ( OPJ_INT32 ) l_img_comp -> dy ) ; if ( l_tccp -> numresolutions > * p_max_res ) { * p_max_res = l_tccp -> numresolutions ; } l_level_no = l_tccp -> numresolutions - 1 ; for ( resno = 0 ; resno < l_tccp -> numresolutions ; ++ resno ) { OPJ_UINT32 l_dx , l_dy ; l_pdx = l_tccp -> prcw [ resno ] ; l_pdy = l_tccp -> prch [ resno ] ; * lResolutionPtr ++ = l_pdx ; * lResolutionPtr ++ = l_pdy ; l_dx = l_img_comp -> dx * ( 1u << ( l_pdx + l_level_no ) ) ; l_dy = l_img_comp -> dy * ( 1u << ( l_pdy + l_level_no ) ) ; * p_dx_min = ( OPJ_UINT32 ) opj_int_min ( ( OPJ_INT32 ) * p_dx_min , ( OPJ_INT32 ) l_dx ) ; * p_dy_min = ( OPJ_UINT32 ) opj_int_min ( ( OPJ_INT32 ) * p_dy_min , ( OPJ_INT32 ) l_dy ) ; l_rx0 = opj_int_ceildivpow2 ( l_tcx0 , ( OPJ_INT32 ) l_level_no ) ; l_ry0 = opj_int_ceildivpow2 ( l_tcy0 , ( OPJ_INT32 ) l_level_no ) ; l_rx1 = opj_int_ceildivpow2 ( l_tcx1 , ( OPJ_INT32 ) l_level_no ) ; l_ry1 = opj_int_ceildivpow2 ( l_tcy1 , ( OPJ_INT32 ) l_level_no ) ; l_px0 = opj_int_floordivpow2 ( l_rx0 , ( OPJ_INT32 ) l_pdx ) << l_pdx ; l_py0 = opj_int_floordivpow2 ( l_ry0 , ( OPJ_INT32 ) l_pdy ) << l_pdy ; l_px1 = opj_int_ceildivpow2 ( l_rx1 , ( OPJ_INT32 ) l_pdx ) << l_pdx ; py1 = opj_int_ceildivpow2 ( l_ry1 , ( OPJ_INT32 ) l_pdy ) << l_pdy ; l_pw = ( l_rx0 == l_rx1 ) ? 0 : ( OPJ_UINT32 ) ( ( l_px1 - l_px0 ) >> l_pdx ) ; l_ph = ( l_ry0 == l_ry1 ) ? 0 : ( OPJ_UINT32 ) ( ( py1 - l_py0 ) >> l_pdy ) ; * lResolutionPtr ++ = l_pw ; * lResolutionPtr ++ = l_ph ; l_product = l_pw * l_ph ; if ( l_product > * p_max_prec ) { * p_max_prec = l_product ; } -- l_level_no ; } ++ l_tccp ; ++ l_img_comp ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * p_tx0 = ( OPJ_INT32 ) opj_uint_max <S2SV_ModEnd> ( p_cp -> <S2SV_ModStart> p_cp -> tdx , <S2SV_ModEnd> p_image -> x0 <S2SV_ModStart> * p_tx1 = ( OPJ_INT32 ) opj_uint_min <S2SV_ModEnd> ( p_cp -> <S2SV_ModStart> p_cp -> tdx , <S2SV_ModEnd> p_image -> x1 <S2SV_ModStart> * p_ty0 = ( OPJ_INT32 ) opj_uint_max <S2SV_ModEnd> ( p_cp -> <S2SV_ModStart> p_cp -> tdy , <S2SV_ModEnd> p_image -> y0 <S2SV_ModStart> * p_ty1 = ( OPJ_INT32 ) opj_uint_min <S2SV_ModEnd> ( p_cp -> <S2SV_ModStart> p_cp -> tdy , <S2SV_ModEnd> p_image -> y1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3672\n\n```\nCWE-254 void arch_pick_mmap_layout ( struct mm_struct * mm ) { unsigned long random_factor = 0UL ; if ( current -> flags & PF_RANDOMIZE ) random_factor = arch_mmap_rnd ( ) ; <S2SV_StartBug> mm -> mmap_legacy_base = mmap_legacy_base ( random_factor ) ; <S2SV_EndBug> if ( mmap_is_legacy ( ) ) { mm -> mmap_base = mm -> mmap_legacy_base ; mm -> get_unmapped_area = arch_get_unmapped_area ; } else { mm -> mmap_base = mmap_base ( random_factor ) ; mm -> get_unmapped_area = arch_get_unmapped_area_topdown ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mmap_legacy_base = TASK_UNMAPPED_BASE + random_factor <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static INLINE void fdct32x32 ( int rd_transform , <S2SV_StartBug> const int16_t * src , int16_t * dst , int src_stride ) { <S2SV_EndBug> if ( rd_transform ) <S2SV_StartBug> vp9_fdct32x32_rd ( src , dst , src_stride ) ; <S2SV_EndBug> else <S2SV_StartBug> vp9_fdct32x32 ( src , dst , src_stride ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * src , tran_low_t <S2SV_ModEnd> * dst , <S2SV_ModStart> ( rd_transform ) vpx_fdct32x32_rd <S2SV_ModEnd> ( src , <S2SV_ModStart> ) ; else vpx_fdct32x32 <S2SV_ModEnd> ( src ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3905\n\n```\nCWE-119 void process_pfa ( FILE * ifp , const char * ifp_filename , struct font_reader * fr ) { char buffer [ LINESIZE ] ; int c = 0 ; int blocktyp = PFA_ASCII ; char saved_orphan = 0 ; ( void ) ifp_filename ; while ( c != EOF ) { char * line = buffer , * last = buffer ; int crlf = 0 ; c = getc ( ifp ) ; while ( c != EOF && c != '\\\\r' && c != '\\\\n' && last < buffer + LINESIZE - 1 ) { * last ++ = c ; c = getc ( ifp ) ; } if ( last == buffer + LINESIZE - 1 ) ungetc ( c , ifp ) ; else if ( c == '\\\\r' && blocktyp != PFA_BINARY ) { c = getc ( ifp ) ; if ( c != '\\\\n' ) ungetc ( c , ifp ) , crlf = 1 ; else crlf = 2 ; * last ++ = '\\\\n' ; } else if ( c != EOF ) * last ++ = c ; * last = 0 ; if ( blocktyp == PFA_ASCII ) { <S2SV_StartBug> if ( strncmp ( line , \"currentfile<S2SV_blank>eexec\" , 17 ) == 0 && isspace ( line [ 17 ] ) ) { <S2SV_EndBug> char saved_p ; <S2SV_StartBug> for ( line += 18 ; isspace ( * line ) ; line ++ ) <S2SV_EndBug> ; saved_p = * line ; * line = 0 ; fr -> output_ascii ( buffer , line - buffer ) ; * line = saved_p ; blocktyp = PFA_EEXEC_TEST ; if ( ! * line ) continue ; } else { fr -> output_ascii ( line , last - line ) ; continue ; } } if ( blocktyp == PFA_EEXEC_TEST ) { <S2SV_StartBug> for ( ; line < last && isspace ( * line ) ; line ++ ) <S2SV_EndBug> ; if ( line == last ) continue ; <S2SV_StartBug> else if ( last >= line + 4 && isxdigit ( line [ 0 ] ) && isxdigit ( line [ 1 ] ) <S2SV_EndBug> <S2SV_StartBug> && isxdigit ( line [ 2 ] ) && isxdigit ( line [ 3 ] ) ) <S2SV_EndBug> blocktyp = PFA_HEX ; else blocktyp = PFA_BINARY ; memmove ( buffer , line , last - line + 1 ) ; last = buffer + ( last - line ) ; line = buffer ; if ( blocktyp == PFA_BINARY && crlf ) { last [ - 1 ] = '\\\\r' ; if ( crlf == 2 ) * last ++ = '\\\\n' ; } } if ( all_zeroes ( line ) ) { fr -> output_ascii ( line , last - line ) ; blocktyp = PFA_ASCII ; } else if ( blocktyp == PFA_HEX ) { int len = translate_hex_string ( line , & saved_orphan ) ; if ( len ) fr -> output_binary ( ( unsigned char * ) line , len ) ; } else fr -> output_binary ( ( unsigned char * ) line , last - line ) ; } fr -> output_end ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && isspace ( ( unsigned char ) <S2SV_ModStart> ; isspace ( ( unsigned char ) <S2SV_ModStart> && isspace ( ( unsigned char ) <S2SV_ModStart> && isxdigit ( ( unsigned char ) <S2SV_ModStart> && isxdigit ( ( unsigned char ) <S2SV_ModStart> && isxdigit ( ( unsigned char ) <S2SV_ModStart> && isxdigit ( ( unsigned char )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2136\n\n```\nCWE-20 struct sk_buff * sock_alloc_send_pskb ( struct sock * sk , unsigned long header_len , unsigned long data_len , int noblock , int * errcode ) { struct sk_buff * skb ; gfp_t gfp_mask ; long timeo ; int err ; <S2SV_StartBug> gfp_mask = sk -> sk_allocation ; <S2SV_EndBug> if ( gfp_mask & __GFP_WAIT ) gfp_mask |= __GFP_REPEAT ; timeo = sock_sndtimeo ( sk , noblock ) ; while ( 1 ) { err = sock_error ( sk ) ; if ( err != 0 ) goto failure ; err = - EPIPE ; if ( sk -> sk_shutdown & SEND_SHUTDOWN ) goto failure ; if ( atomic_read ( & sk -> sk_wmem_alloc ) < sk -> sk_sndbuf ) { skb = alloc_skb ( header_len , gfp_mask ) ; if ( skb ) { <S2SV_StartBug> int npages ; <S2SV_EndBug> int i ; if ( ! data_len ) <S2SV_StartBug> break ; <S2SV_EndBug> npages = ( data_len + ( PAGE_SIZE - 1 ) ) >> PAGE_SHIFT ; skb -> truesize += data_len ; skb_shinfo ( skb ) -> nr_frags = npages ; for ( i = 0 ; i < npages ; i ++ ) { struct page * page ; page = alloc_pages ( sk -> sk_allocation , 0 ) ; if ( ! page ) { err = - ENOBUFS ; skb_shinfo ( skb ) -> nr_frags = i ; kfree_skb ( skb ) ; goto failure ; } __skb_fill_page_desc ( skb , i , page , 0 , ( data_len >= PAGE_SIZE ? PAGE_SIZE : data_len ) ) ; data_len -= PAGE_SIZE ; } break ; } err = - ENOBUFS ; goto failure ; } set_bit ( SOCK_ASYNC_NOSPACE , & sk -> sk_socket -> flags ) ; set_bit ( SOCK_NOSPACE , & sk -> sk_socket -> flags ) ; err = - EAGAIN ; if ( ! timeo ) goto failure ; if ( signal_pending ( current ) ) goto interrupted ; timeo = sock_wait_for_wmem ( sk , timeo ) ; } skb_set_owner_w ( skb , sk ) ; return skb ; interrupted : err = sock_intr_errno ( timeo ) ; failure : * errcode = err ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int err ; int npages = ( data_len + ( PAGE_SIZE - 1 ) ) >> PAGE_SHIFT ; err = - EMSGSIZE ; if ( npages > MAX_SKB_FRAGS ) goto failure ; <S2SV_ModStart> ) { int <S2SV_ModEnd> i ; if <S2SV_ModStart> data_len ) break <S2SV_ModEnd> ; skb ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13013\n\n```\nCWE-125 void arp_print ( netdissect_options * ndo , const u_char * bp , u_int length , u_int caplen ) { const struct arp_pkthdr * ap ; u_short pro , hrd , op , linkaddr ; ap = ( const struct arp_pkthdr * ) bp ; ND_TCHECK ( * ap ) ; hrd = HRD ( ap ) ; pro = PRO ( ap ) ; op = OP ( ap ) ; switch ( hrd ) { case ARPHRD_ATM2225 : atmarp_print ( ndo , bp , length , caplen ) ; return ; case ARPHRD_FRELAY : linkaddr = LINKADDR_FRELAY ; break ; default : linkaddr = LINKADDR_ETHER ; break ; } <S2SV_StartBug> if ( ! ND_TTEST2 ( * ar_tpa ( ap ) , PROTO_LEN ( ap ) ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; ND_DEFAULTPRINT ( ( const u_char * ) ap , length ) ; return ; } if ( ! ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"ARP,<S2SV_blank>\" ) ) ; } if ( ( pro != ETHERTYPE_IP && pro != ETHERTYPE_TRAIL ) || PROTO_LEN ( ap ) != 4 || HRD_LEN ( ap ) == 0 || ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>(len<S2SV_blank>%u),<S2SV_blank>%s<S2SV_blank>(len<S2SV_blank>%u)\" , tok2str ( arphrd_values , \"Unknown<S2SV_blank>Hardware<S2SV_blank>(%u)\" , hrd ) , HRD_LEN ( ap ) , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , pro ) , PROTO_LEN ( ap ) ) ) ; if ( ! ndo -> ndo_vflag ) { goto out ; } } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>\" , ndo -> ndo_vflag ? \",<S2SV_blank>\" : \"\" , tok2str ( arpop_values , \"Unknown<S2SV_blank>(%u)\" , op ) ) ) ; switch ( op ) { case ARPOP_REQUEST : <S2SV_StartBug> ND_PRINT ( ( ndo , \"who-has<S2SV_blank>%s\" , ipaddr_string ( ndo , TPA ( ap ) ) ) ) ; <S2SV_EndBug> if ( isnonzero ( ( const u_char * ) THA ( ap ) , HRD_LEN ( ap ) ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , linkaddr_string ( ndo , THA ( ap ) , linkaddr , HRD_LEN ( ap ) ) ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>tell<S2SV_blank>%s\" , ipaddr_string ( ndo , SPA ( ap ) ) ) ) ; <S2SV_EndBug> break ; case ARPOP_REPLY : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>is-at<S2SV_blank>%s\" , <S2SV_EndBug> ipaddr_string ( ndo , SPA ( ap ) ) , linkaddr_string ( ndo , SHA ( ap ) , linkaddr , HRD_LEN ( ap ) ) ) ) ; break ; case ARPOP_REVREQUEST : ND_PRINT ( ( ndo , \"who-is<S2SV_blank>%s<S2SV_blank>tell<S2SV_blank>%s\" , linkaddr_string ( ndo , THA ( ap ) , linkaddr , HRD_LEN ( ap ) ) , linkaddr_string ( ndo , SHA ( ap ) , linkaddr , HRD_LEN ( ap ) ) ) ) ; break ; case ARPOP_REVREPLY : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>at<S2SV_blank>%s\" , <S2SV_EndBug> <S2SV_StartBug> linkaddr_string ( ndo , THA ( ap ) , linkaddr , HRD_LEN ( ap ) ) , <S2SV_EndBug> ipaddr_string ( ndo , TPA ( ap ) ) ) ) ; break ; case ARPOP_INVREQUEST : ND_PRINT ( ( ndo , \"who-is<S2SV_blank>%s<S2SV_blank>tell<S2SV_blank>%s\" , linkaddr_string ( ndo , THA ( ap ) , linkaddr , HRD_LEN ( ap ) ) , linkaddr_string ( ndo , SHA ( ap ) , linkaddr , HRD_LEN ( ap ) ) ) ) ; break ; case ARPOP_INVREPLY : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>at<S2SV_blank>%s\" , <S2SV_EndBug> <S2SV_StartBug> linkaddr_string ( ndo , SHA ( ap ) , linkaddr , HRD_LEN ( ap ) ) , <S2SV_EndBug> ipaddr_string ( ndo , SPA ( ap ) ) ) ) ; break ; default : ND_DEFAULTPRINT ( ( const u_char * ) ap , caplen ) ; return ; } out : ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ND_TTEST2 ( * TPA <S2SV_ModEnd> ( ap ) <S2SV_ModStart> ( ndo , \"who-has<S2SV_blank>\" ) ) ; tpaddr_print_ip ( ndo , ap , pro <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( ndo , \"<S2SV_blank>tell<S2SV_blank>\" ) ) ; spaddr_print_ip ( ndo , ap , pro <S2SV_ModEnd> ) ; break <S2SV_ModStart> case ARPOP_REPLY : spaddr_print_ip ( ndo , ap , pro ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>is-at<S2SV_blank>%s\" <S2SV_ModEnd> , linkaddr_string ( <S2SV_ModStart> ( ndo , \"%s<S2SV_blank>at<S2SV_blank>\" <S2SV_ModEnd> , linkaddr_string ( <S2SV_ModStart> ap ) ) ) ) ; tpaddr_print_ip ( ndo , ap , pro <S2SV_ModEnd> ) ; break <S2SV_ModStart> ( ndo , \"%s<S2SV_blank>at<S2SV_blank>\" <S2SV_ModEnd> , linkaddr_string ( <S2SV_ModStart> ap ) ) ) ) ; spaddr_print_ip ( ndo , ap , pro <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_update_layer_context_change_config ( VP9_COMP * const cpi , const int target_bandwidth ) { SVC * const svc = & cpi -> svc ; <S2SV_StartBug> const VP9_CONFIG * const oxcf = & cpi -> oxcf ; <S2SV_EndBug> const RATE_CONTROL * const rc = & cpi -> rc ; <S2SV_StartBug> int layer ; <S2SV_EndBug> int layer_end ; float bitrate_alloc = 1.0 ; <S2SV_StartBug> if ( svc -> number_temporal_layers > 1 ) { <S2SV_EndBug> layer_end = svc -> number_temporal_layers ; } else { layer_end = svc -> number_spatial_layers ; } for ( layer = 0 ; layer < layer_end ; ++ layer ) { LAYER_CONTEXT * const lc = & svc -> layer_context [ layer ] ; <S2SV_StartBug> RATE_CONTROL * const lrc = & lc -> rc ; <S2SV_EndBug> <S2SV_StartBug> if ( svc -> number_temporal_layers > 1 ) { <S2SV_EndBug> lc -> target_bandwidth = oxcf -> ts_target_bitrate [ layer ] * 1000 ; } else { lc -> target_bandwidth = oxcf -> ss_target_bitrate [ layer ] * 1000 ; } bitrate_alloc = ( float ) lc -> target_bandwidth / target_bandwidth ; lc -> starting_buffer_level = ( int64_t ) ( oxcf -> starting_buffer_level * bitrate_alloc ) ; lc -> optimal_buffer_level = ( int64_t ) ( oxcf -> optimal_buffer_level * bitrate_alloc ) ; lc -> maximum_buffer_size = ( int64_t ) ( oxcf -> maximum_buffer_size * bitrate_alloc ) ; lrc -> bits_off_target = MIN ( lrc -> bits_off_target , lc -> maximum_buffer_size ) ; lrc -> buffer_level = MIN ( lrc -> buffer_level , lc -> maximum_buffer_size ) ; if ( svc -> number_temporal_layers > 1 ) { <S2SV_StartBug> lc -> framerate = oxcf -> framerate / oxcf -> ts_rate_decimator [ layer ] ; <S2SV_EndBug> } else { <S2SV_StartBug> lc -> framerate = oxcf -> framerate ; <S2SV_EndBug> } <S2SV_StartBug> lrc -> av_per_frame_bandwidth = ( int ) ( lc -> target_bandwidth / lc -> framerate ) ; <S2SV_EndBug> lrc -> max_frame_bandwidth = rc -> max_frame_bandwidth ; lrc -> worst_quality = rc -> worst_quality ; lrc -> best_quality = rc -> best_quality ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svc ; const VP9EncoderConfig <S2SV_ModEnd> * const oxcf <S2SV_ModStart> rc ; int sl , tl , layer = 0 , spatial_layer_target ; float bitrate_alloc = 1.0 ; if ( svc -> temporal_layering_mode != VP9E_TEMPORAL_LAYERING_MODE_NOLAYERING ) { for ( sl = 0 ; sl < oxcf -> ss_number_layers ; ++ sl ) { spatial_layer_target = 0 ; for ( tl = 0 ; tl < oxcf -> ts_number_layers ; ++ tl ) { layer = LAYER_IDS_TO_IDX ( sl , tl , oxcf -> ts_number_layers ) ; svc -> layer_context [ layer ] . target_bandwidth = oxcf -> layer_target_bitrate [ layer ] ; } layer = LAYER_IDS_TO_IDX ( sl , ( ( oxcf -> ts_number_layers - 1 ) < 0 ? 0 : ( oxcf -> ts_number_layers - 1 ) ) , oxcf -> ts_number_layers ) ; spatial_layer_target = svc -> layer_context [ layer ] . target_bandwidth = oxcf -> layer_target_bitrate [ layer ] ; for ( tl = 0 ; tl < oxcf -> ts_number_layers ; ++ tl ) { LAYER_CONTEXT * const lc = & svc -> layer_context [ sl * oxcf -> ts_number_layers + tl ] ; RATE_CONTROL * const lrc = & lc -> rc ; lc -> spatial_layer_target_bandwidth = spatial_layer_target ; bitrate_alloc = ( float ) lc -> target_bandwidth / spatial_layer_target ; lrc -> starting_buffer_level = ( int64_t ) ( rc -> starting_buffer_level * bitrate_alloc ) ; lrc -> optimal_buffer_level = ( int64_t ) ( rc -> optimal_buffer_level * bitrate_alloc ) ; lrc -> maximum_buffer_size = ( int64_t ) ( rc -> maximum_buffer_size * bitrate_alloc ) ; lrc -> bits_off_target = MIN ( lrc -> bits_off_target , lrc -> maximum_buffer_size ) ; lrc -> buffer_level = MIN ( lrc -> buffer_level , lrc -> maximum_buffer_size ) ; lc -> framerate = cpi -> framerate / oxcf -> ts_rate_decimator [ tl ] ; lrc -> avg_frame_bandwidth = ( int ) ( lc -> target_bandwidth / lc -> framerate ) ; lrc -> max_frame_bandwidth = rc -> max_frame_bandwidth ; lrc -> worst_quality = rc -> worst_quality ; lrc -> best_quality = rc -> best_quality ; } } } else { int layer_end <S2SV_ModEnd> ; if ( <S2SV_ModStart> number_temporal_layers > 1 && cpi -> oxcf . rc_mode == VPX_CBR <S2SV_ModStart> lc -> rc ; lc -> target_bandwidth = oxcf -> layer_target_bitrate [ layer ] ; bitrate_alloc = ( float ) lc -> target_bandwidth / target_bandwidth ; lrc -> starting_buffer_level = ( int64_t ) ( rc -> starting_buffer_level * bitrate_alloc ) ; lrc -> optimal_buffer_level = ( int64_t ) ( rc -> optimal_buffer_level * bitrate_alloc ) ; lrc -> maximum_buffer_size = ( int64_t ) ( rc -> maximum_buffer_size * bitrate_alloc ) ; lrc -> bits_off_target = MIN ( lrc -> bits_off_target , lrc -> maximum_buffer_size ) ; lrc -> buffer_level = MIN ( lrc -> buffer_level , lrc -> maximum_buffer_size ) <S2SV_ModStart> number_temporal_layers > 1 && cpi -> oxcf . rc_mode == VPX_CBR <S2SV_ModEnd> ) { lc <S2SV_ModStart> -> framerate = cpi <S2SV_ModEnd> -> framerate / <S2SV_ModStart> -> framerate = cpi <S2SV_ModEnd> -> framerate ; <S2SV_ModStart> } lrc -> avg_frame_bandwidth <S2SV_ModEnd> = ( int <S2SV_ModStart> ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 int id3_skip ( SF_PRIVATE * psf ) { unsigned char buf [ 10 ] ; memset ( buf , 0 , sizeof ( buf ) ) ; psf_binheader_readf ( psf , \"pb\" , 0 , buf , 10 ) ; if ( buf [ 0 ] == 'I' && buf [ 1 ] == 'D' && buf [ 2 ] == '3' ) { int offset = buf [ 6 ] & 0x7f ; offset = ( offset << 7 ) | ( buf [ 7 ] & 0x7f ) ; offset = ( offset << 7 ) | ( buf [ 8 ] & 0x7f ) ; offset = ( offset << 7 ) | ( buf [ 9 ] & 0x7f ) ; psf_log_printf ( psf , \"ID3<S2SV_blank>length<S2SV_blank>:<S2SV_blank>%d\\\\n--------------------\\\\n\" , offset ) ; if ( offset < 0 ) return 0 ; psf -> fileoffset += offset + 10 ; <S2SV_StartBug> psf_binheader_readf ( psf , \"p\" , psf -> fileoffset ) ; <S2SV_EndBug> return 1 ; } ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 10 ; if ( psf -> fileoffset < psf -> filelength ) { <S2SV_ModStart> ; } ; } ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17854\n\n```\nCWE-190 static int adjust_ptr_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , const struct bpf_reg_state * ptr_reg , const struct bpf_reg_state * off_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) , * dst_reg ; bool known = tnum_is_const ( off_reg -> var_off ) ; s64 smin_val = off_reg -> smin_value , smax_val = off_reg -> smax_value , smin_ptr = ptr_reg -> smin_value , smax_ptr = ptr_reg -> smax_value ; u64 umin_val = off_reg -> umin_value , umax_val = off_reg -> umax_value , umin_ptr = ptr_reg -> umin_value , umax_ptr = ptr_reg -> umax_value ; u8 opcode = BPF_OP ( insn -> code ) ; u32 dst = insn -> dst_reg ; dst_reg = & regs [ dst ] ; if ( WARN_ON_ONCE ( known && ( smin_val != smax_val ) ) ) { print_verifier_state ( env , env -> cur_state ) ; verbose ( env , \"verifier<S2SV_blank>internal<S2SV_blank>error:<S2SV_blank>known<S2SV_blank>but<S2SV_blank>bad<S2SV_blank>sbounds\\\\n\" ) ; return - EINVAL ; } if ( WARN_ON_ONCE ( known && ( umin_val != umax_val ) ) ) { print_verifier_state ( env , env -> cur_state ) ; verbose ( env , \"verifier<S2SV_blank>internal<S2SV_blank>error:<S2SV_blank>known<S2SV_blank>but<S2SV_blank>bad<S2SV_blank>ubounds\\\\n\" ) ; return - EINVAL ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>32-bit<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == PTR_TO_MAP_VALUE_OR_NULL ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>PTR_TO_MAP_VALUE_OR_NULL<S2SV_blank>prohibited,<S2SV_blank>null-check<S2SV_blank>it<S2SV_blank>first\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == CONST_PTR_TO_MAP ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>CONST_PTR_TO_MAP<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == PTR_TO_PACKET_END ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>PTR_TO_PACKET_END<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } dst_reg -> type = ptr_reg -> type ; <S2SV_StartBug> dst_reg -> id = ptr_reg -> id ; <S2SV_EndBug> switch ( opcode ) { case BPF_ADD : if ( known && ( ptr_reg -> off + smin_val == ( s64 ) ( s32 ) ( ptr_reg -> off + smin_val ) ) ) { dst_reg -> smin_value = smin_ptr ; dst_reg -> smax_value = smax_ptr ; dst_reg -> umin_value = umin_ptr ; dst_reg -> umax_value = umax_ptr ; dst_reg -> var_off = ptr_reg -> var_off ; dst_reg -> off = ptr_reg -> off + smin_val ; dst_reg -> range = ptr_reg -> range ; break ; } if ( signed_add_overflows ( smin_ptr , smin_val ) || signed_add_overflows ( smax_ptr , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = smin_ptr + smin_val ; dst_reg -> smax_value = smax_ptr + smax_val ; } if ( umin_ptr + umin_val < umin_ptr || umax_ptr + umax_val < umax_ptr ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value = umin_ptr + umin_val ; dst_reg -> umax_value = umax_ptr + umax_val ; } dst_reg -> var_off = tnum_add ( ptr_reg -> var_off , off_reg -> var_off ) ; dst_reg -> off = ptr_reg -> off ; if ( reg_is_pkt_pointer ( ptr_reg ) ) { dst_reg -> id = ++ env -> id_gen ; dst_reg -> range = 0 ; } break ; case BPF_SUB : if ( dst_reg == off_reg ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>subtract<S2SV_blank>pointer<S2SV_blank>from<S2SV_blank>scalar\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == PTR_TO_STACK ) { if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>subtraction<S2SV_blank>from<S2SV_blank>stack<S2SV_blank>pointer<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } if ( known && ( ptr_reg -> off - smin_val == ( s64 ) ( s32 ) ( ptr_reg -> off - smin_val ) ) ) { dst_reg -> smin_value = smin_ptr ; dst_reg -> smax_value = smax_ptr ; dst_reg -> umin_value = umin_ptr ; dst_reg -> umax_value = umax_ptr ; dst_reg -> var_off = ptr_reg -> var_off ; dst_reg -> id = ptr_reg -> id ; dst_reg -> off = ptr_reg -> off - smin_val ; dst_reg -> range = ptr_reg -> range ; break ; } if ( signed_sub_overflows ( smin_ptr , smax_val ) || signed_sub_overflows ( smax_ptr , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = smin_ptr - smax_val ; dst_reg -> smax_value = smax_ptr - smin_val ; } if ( umin_ptr < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value = umin_ptr - umax_val ; dst_reg -> umax_value = umax_ptr - umin_val ; } dst_reg -> var_off = tnum_sub ( ptr_reg -> var_off , off_reg -> var_off ) ; dst_reg -> off = ptr_reg -> off ; if ( reg_is_pkt_pointer ( ptr_reg ) ) { dst_reg -> id = ++ env -> id_gen ; if ( smin_val < 0 ) dst_reg -> range = 0 ; } break ; case BPF_AND : case BPF_OR : case BPF_XOR : if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>bitwise<S2SV_blank>operator<S2SV_blank>%s<S2SV_blank>on<S2SV_blank>pointer<S2SV_blank>prohibited\\\\n\" , dst , bpf_alu_string [ opcode >> 4 ] ) ; return - EACCES ; default : if ( ! env -> allow_ptr_leaks ) verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>with<S2SV_blank>%s<S2SV_blank>operator<S2SV_blank>prohibited\\\\n\" , dst , bpf_alu_string [ opcode >> 4 ] ) ; return - EACCES ; } <S2SV_StartBug> __update_reg_bounds ( dst_reg ) ; <S2SV_EndBug> __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptr_reg -> id ; if ( ! check_reg_sane_offset ( env , off_reg , ptr_reg -> type ) || ! check_reg_sane_offset ( env , ptr_reg , ptr_reg -> type ) ) return - EINVAL <S2SV_ModStart> EACCES ; } if ( ! check_reg_sane_offset ( env , dst_reg , ptr_reg -> type ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static expr_ty ast_for_trailer ( struct compiling * c , const node * n , expr_ty left_expr ) { REQ ( n , trailer ) ; if ( TYPE ( CHILD ( n , 0 ) ) == LPAR ) { if ( NCH ( n ) == 2 ) return Call ( left_expr , NULL , NULL , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; else <S2SV_StartBug> return ast_for_call ( c , CHILD ( n , 1 ) , left_expr ) ; <S2SV_EndBug> } else if ( TYPE ( CHILD ( n , 0 ) ) == DOT ) { PyObject * attr_id = NEW_IDENTIFIER ( CHILD ( n , 1 ) ) ; if ( ! attr_id ) return NULL ; return Attribute ( left_expr , attr_id , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } else { REQ ( CHILD ( n , 0 ) , LSQB ) ; REQ ( CHILD ( n , 2 ) , RSQB ) ; n = CHILD ( n , 1 ) ; if ( NCH ( n ) == 1 ) { slice_ty slc = ast_for_slice ( c , CHILD ( n , 0 ) ) ; if ( ! slc ) return NULL ; return Subscript ( left_expr , slc , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } else { int j ; slice_ty slc ; expr_ty e ; int simple = 1 ; asdl_seq * slices , * elts ; slices = _Ta3_asdl_seq_new ( ( NCH ( n ) + 1 ) / 2 , c -> c_arena ) ; if ( ! slices ) return NULL ; for ( j = 0 ; j < NCH ( n ) ; j += 2 ) { slc = ast_for_slice ( c , CHILD ( n , j ) ) ; if ( ! slc ) return NULL ; if ( slc -> kind != Index_kind ) simple = 0 ; asdl_seq_SET ( slices , j / 2 , slc ) ; } if ( ! simple ) { return Subscript ( left_expr , ExtSlice ( slices , c -> c_arena ) , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } elts = _Ta3_asdl_seq_new ( asdl_seq_LEN ( slices ) , c -> c_arena ) ; if ( ! elts ) return NULL ; for ( j = 0 ; j < asdl_seq_LEN ( slices ) ; ++ j ) { slc = ( slice_ty ) asdl_seq_GET ( slices , j ) ; assert ( slc -> kind == Index_kind && slc -> v . Index . value ) ; asdl_seq_SET ( elts , j , slc -> v . Index . value ) ; } e = Tuple ( elts , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; if ( ! e ) return NULL ; return Subscript ( left_expr , Index ( e , c -> c_arena ) , Load , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) , left_expr , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3375\n\n```\nCWE-000 SYSCALL_DEFINE4 ( epoll_ctl , int , epfd , int , op , int , fd , struct epoll_event __user * , event ) { int error ; int did_lock_epmutex = 0 ; struct file * file , * tfile ; struct eventpoll * ep ; struct epitem * epi ; struct epoll_event epds ; error = - EFAULT ; if ( ep_op_has_event ( op ) && copy_from_user ( & epds , event , sizeof ( struct epoll_event ) ) ) goto error_return ; error = - EBADF ; file = fget ( epfd ) ; if ( ! file ) goto error_return ; tfile = fget ( fd ) ; if ( ! tfile ) goto error_fput ; error = - EPERM ; if ( ! tfile -> f_op || ! tfile -> f_op -> poll ) goto error_tgt_fput ; error = - EINVAL ; if ( file == tfile || ! is_file_epoll ( file ) ) goto error_tgt_fput ; ep = file -> private_data ; if ( op == EPOLL_CTL_ADD || op == EPOLL_CTL_DEL ) { mutex_lock ( & epmutex ) ; did_lock_epmutex = 1 ; } if ( op == EPOLL_CTL_ADD ) { if ( is_file_epoll ( tfile ) ) { error = - ELOOP ; <S2SV_StartBug> if ( ep_loop_check ( ep , tfile ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> goto error_tgt_fput ; <S2SV_EndBug> } else list_add ( & tfile -> f_tfile_llink , & tfile_check_list ) ; } mutex_lock_nested ( & ep -> mtx , 0 ) ; epi = ep_find ( ep , tfile , fd ) ; error = - EINVAL ; switch ( op ) { case EPOLL_CTL_ADD : if ( ! epi ) { epds . events |= POLLERR | POLLHUP ; error = ep_insert ( ep , & epds , tfile , fd ) ; } else error = - EEXIST ; clear_tfile_check_list ( ) ; break ; case EPOLL_CTL_DEL : if ( epi ) error = ep_remove ( ep , epi ) ; else error = - ENOENT ; break ; case EPOLL_CTL_MOD : if ( epi ) { epds . events |= POLLERR | POLLHUP ; error = ep_modify ( ep , epi , & epds ) ; } else error = - ENOENT ; break ; } mutex_unlock ( & ep -> mtx ) ; error_tgt_fput : if ( did_lock_epmutex ) mutex_unlock ( & epmutex ) ; fput ( tfile ) ; error_fput : fput ( file ) ; error_return : return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != 0 ) { clear_tfile_check_list ( ) ; <S2SV_ModStart> goto error_tgt_fput ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4440\n\n```\nCWE-264 static void vmx_set_msr_bitmap ( struct kvm_vcpu * vcpu ) { unsigned long * msr_bitmap ; if ( is_guest_mode ( vcpu ) ) msr_bitmap = vmx_msr_bitmap_nested ; <S2SV_StartBug> else if ( vcpu -> arch . apic_base & X2APIC_ENABLE ) { <S2SV_EndBug> if ( is_long_mode ( vcpu ) ) msr_bitmap = vmx_msr_bitmap_longmode_x2apic ; else msr_bitmap = vmx_msr_bitmap_legacy_x2apic ; } else { if ( is_long_mode ( vcpu ) ) msr_bitmap = vmx_msr_bitmap_longmode ; else msr_bitmap = vmx_msr_bitmap_legacy ; } vmcs_write64 ( MSR_BITMAP , __pa ( msr_bitmap ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> else if ( cpu_has_secondary_exec_ctrls ( ) && ( vmcs_read32 ( SECONDARY_VM_EXEC_CONTROL ) & SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE ) <S2SV_ModEnd> ) { if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9150\n\n```\nCWE-200 static int do_check ( struct bpf_verifier_env * env ) { struct bpf_verifier_state * state = & env -> cur_state ; struct bpf_insn * insns = env -> prog -> insnsi ; struct bpf_reg_state * regs = state -> regs ; int insn_cnt = env -> prog -> len ; int insn_idx , prev_insn_idx = 0 ; int insn_processed = 0 ; bool do_print_state = false ; init_reg_state ( regs ) ; insn_idx = 0 ; env -> varlen_map_value_access = false ; for ( ; ; ) { struct bpf_insn * insn ; u8 class ; int err ; if ( insn_idx >= insn_cnt ) { verbose ( \"invalid<S2SV_blank>insn<S2SV_blank>idx<S2SV_blank>%d<S2SV_blank>insn_cnt<S2SV_blank>%d\\\\n\" , insn_idx , insn_cnt ) ; return - EFAULT ; } insn = & insns [ insn_idx ] ; class = BPF_CLASS ( insn -> code ) ; if ( ++ insn_processed > BPF_COMPLEXITY_LIMIT_INSNS ) { verbose ( \"BPF<S2SV_blank>program<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.<S2SV_blank>Processed<S2SV_blank>%d<S2SV_blank>insn\\\\n\" , insn_processed ) ; return - E2BIG ; } err = is_state_visited ( env , insn_idx ) ; if ( err < 0 ) return err ; if ( err == 1 ) { if ( log_level ) { if ( do_print_state ) verbose ( \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>safe\\\\n\" , prev_insn_idx , insn_idx ) ; else verbose ( \"%d:<S2SV_blank>safe\\\\n\" , insn_idx ) ; } goto process_bpf_exit ; } if ( log_level && do_print_state ) { verbose ( \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:\" , prev_insn_idx , insn_idx ) ; print_verifier_state ( & env -> cur_state ) ; do_print_state = false ; } if ( log_level ) { verbose ( \"%d:<S2SV_blank>\" , insn_idx ) ; <S2SV_StartBug> print_bpf_insn ( insn ) ; <S2SV_EndBug> } err = ext_analyzer_insn_hook ( env , insn_idx , prev_insn_idx ) ; if ( err ) return err ; if ( class == BPF_ALU || class == BPF_ALU64 ) { err = check_alu_op ( env , insn ) ; if ( err ) return err ; } else if ( class == BPF_LDX ) { enum bpf_reg_type * prev_src_type , src_reg_type ; err = check_reg_arg ( regs , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( regs , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; src_reg_type = regs [ insn -> src_reg ] . type ; err = check_mem_access ( env , insn -> src_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_READ , insn -> dst_reg ) ; if ( err ) return err ; if ( BPF_SIZE ( insn -> code ) != BPF_W && BPF_SIZE ( insn -> code ) != BPF_DW ) { insn_idx ++ ; continue ; } prev_src_type = & env -> insn_aux_data [ insn_idx ] . ptr_type ; if ( * prev_src_type == NOT_INIT ) { * prev_src_type = src_reg_type ; } else if ( src_reg_type != * prev_src_type && ( src_reg_type == PTR_TO_CTX || * prev_src_type == PTR_TO_CTX ) ) { verbose ( \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_STX ) { enum bpf_reg_type * prev_dst_type , dst_reg_type ; if ( BPF_MODE ( insn -> code ) == BPF_XADD ) { err = check_xadd ( env , insn ) ; if ( err ) return err ; insn_idx ++ ; continue ; } err = check_reg_arg ( regs , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( regs , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; dst_reg_type = regs [ insn -> dst_reg ] . type ; err = check_mem_access ( env , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , insn -> src_reg ) ; if ( err ) return err ; prev_dst_type = & env -> insn_aux_data [ insn_idx ] . ptr_type ; if ( * prev_dst_type == NOT_INIT ) { * prev_dst_type = dst_reg_type ; } else if ( dst_reg_type != * prev_dst_type && ( dst_reg_type == PTR_TO_CTX || * prev_dst_type == PTR_TO_CTX ) ) { verbose ( \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_ST ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> src_reg != BPF_REG_0 ) { verbose ( \"BPF_ST<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( regs , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; err = check_mem_access ( env , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , - 1 ) ; if ( err ) return err ; } else if ( class == BPF_JMP ) { u8 opcode = BPF_OP ( insn -> code ) ; if ( opcode == BPF_CALL ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> off != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( \"BPF_CALL<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_call ( env , insn -> imm , insn_idx ) ; if ( err ) return err ; } else if ( opcode == BPF_JA ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( \"BPF_JA<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } insn_idx += insn -> off + 1 ; continue ; } else if ( opcode == BPF_EXIT ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( \"BPF_EXIT<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( regs , BPF_REG_0 , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , BPF_REG_0 ) ) { verbose ( \"R0<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>as<S2SV_blank>return<S2SV_blank>value\\\\n\" ) ; return - EACCES ; } process_bpf_exit : insn_idx = pop_stack ( env , & prev_insn_idx ) ; if ( insn_idx < 0 ) { break ; } else { do_print_state = true ; continue ; } } else { err = check_cond_jmp_op ( env , insn , & insn_idx ) ; if ( err ) return err ; } } else if ( class == BPF_LD ) { u8 mode = BPF_MODE ( insn -> code ) ; if ( mode == BPF_ABS || mode == BPF_IND ) { err = check_ld_abs ( env , insn ) ; if ( err ) return err ; } else if ( mode == BPF_IMM ) { err = check_ld_imm ( env , insn ) ; if ( err ) return err ; insn_idx ++ ; } else { verbose ( \"invalid<S2SV_blank>BPF_LD<S2SV_blank>mode\\\\n\" ) ; return - EINVAL ; } reset_reg_range_values ( regs , insn -> dst_reg ) ; } else { verbose ( \"unknown<S2SV_blank>insn<S2SV_blank>class<S2SV_blank>%d\\\\n\" , class ) ; return - EINVAL ; } insn_idx ++ ; } verbose ( \"processed<S2SV_blank>%d<S2SV_blank>insns\\\\n\" , insn_processed ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; print_bpf_insn ( env ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0991\n\n```\nCWE-399 void mono_runtime_shutdown ( void ) { mono_domain_foreach ( fire_process_exit_event , NULL ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; mono_reflection_shutdown ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13026\n\n```\nCWE-125 static int isis_print_mt_capability_subtlv ( netdissect_options * ndo , const uint8_t * tptr , int len ) { int stlv_type , stlv_len , tmp ; while ( len > 2 ) { <S2SV_StartBug> stlv_type = * ( tptr ++ ) ; <S2SV_EndBug> stlv_len = * ( tptr ++ ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>subTLV<S2SV_blank>#%u,<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( isis_mt_capability_subtlv_values , \"unknown\" , stlv_type ) , stlv_type , stlv_len ) ) ; <S2SV_StartBug> len = len - 2 ; <S2SV_EndBug> switch ( stlv_type ) { case ISIS_SUBTLV_SPB_INSTANCE : <S2SV_StartBug> ND_TCHECK2 ( * tptr , ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>CIST<S2SV_blank>Root-ID:<S2SV_blank>%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr = tptr + 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr = tptr + 4 ; ND_PRINT ( ( ndo , \",<S2SV_blank>Path<S2SV_blank>Cost:<S2SV_blank>%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr = tptr + 4 ; ND_PRINT ( ( ndo , \",<S2SV_blank>Prio:<S2SV_blank>%d\" , EXTRACT_16BITS ( tptr ) ) ) ; tptr = tptr + 2 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d\" , EXTRACT_16BITS ( tptr ) >> 5 ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>V:<S2SV_blank>%d\" , ( EXTRACT_16BITS ( tptr ) >> 4 ) & 0x0001 ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>SPSource-ID:<S2SV_blank>%d\" , ( EXTRACT_32BITS ( tptr ) & 0x000fffff ) ) ) ; tptr = tptr + 4 ; ND_PRINT ( ( ndo , \",<S2SV_blank>No<S2SV_blank>of<S2SV_blank>Trees:<S2SV_blank>%x\" , * ( tptr ) ) ) ; tmp = * ( tptr ++ ) ; len = len - ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN ; <S2SV_StartBug> while ( tmp ) <S2SV_EndBug> { <S2SV_StartBug> ND_TCHECK2 ( * tptr , ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>U:%d,<S2SV_blank>M:%d,<S2SV_blank>A:%d,<S2SV_blank>RES:%d\" , * ( tptr ) >> 7 , ( * ( tptr ) >> 6 ) & 0x01 , ( * ( tptr ) >> 5 ) & 0x01 , ( * ( tptr ) & 0x1f ) ) ) ; tptr ++ ; ND_PRINT ( ( ndo , \",<S2SV_blank>ECT:<S2SV_blank>%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr = tptr + 4 ; ND_PRINT ( ( ndo , \",<S2SV_blank>BVID:<S2SV_blank>%d,<S2SV_blank>SPVID:<S2SV_blank>%d\" , ( EXTRACT_24BITS ( tptr ) >> 12 ) & 0x000fff , EXTRACT_24BITS ( tptr ) & 0x000fff ) ) ; tptr = tptr + 3 ; <S2SV_StartBug> len = len - ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN ; <S2SV_EndBug> tmp -- ; } break ; case ISIS_SUBTLV_SPBM_SI : <S2SV_StartBug> ND_TCHECK2 ( * tptr , 8 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>BMAC:<S2SV_blank>%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr = tptr + 4 ; ND_PRINT ( ( ndo , \"%04x\" , EXTRACT_16BITS ( tptr ) ) ) ; tptr = tptr + 2 ; ND_PRINT ( ( ndo , \",<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>VID:<S2SV_blank>%d\" , EXTRACT_16BITS ( tptr ) >> 12 , ( EXTRACT_16BITS ( tptr ) ) & 0x0fff ) ) ; tptr = tptr + 2 ; len = len - 8 ; stlv_len = stlv_len - 8 ; while ( stlv_len >= 4 ) { ND_TCHECK2 ( * tptr , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>T:<S2SV_blank>%d,<S2SV_blank>R:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>ISID:<S2SV_blank>%d\" , ( EXTRACT_32BITS ( tptr ) >> 31 ) , ( EXTRACT_32BITS ( tptr ) >> 30 ) & 0x01 , ( EXTRACT_32BITS ( tptr ) >> 24 ) & 0x03f , ( EXTRACT_32BITS ( tptr ) ) & 0x0ffffff ) ) ; tptr = tptr + 4 ; len = len - 4 ; stlv_len = stlv_len - 4 ; } break ; default : break ; } <S2SV_StartBug> } <S2SV_EndBug> return 0 ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) { ND_TCHECK2 ( * tptr , 2 ) ; <S2SV_ModStart> len - 2 ; if ( len < stlv_len ) goto trunc ; ND_TCHECK2 ( * ( tptr ) , stlv_len ) <S2SV_ModStart> case ISIS_SUBTLV_SPB_INSTANCE : if ( stlv_len < ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN ) goto trunc <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> - ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN ; stlv_len = stlv_len - ISIS_SUBTLV_SPB_INSTANCE_MIN_LEN ; <S2SV_ModStart> tmp ) { if ( stlv_len < ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN ) goto trunc <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> len = len - ISIS_SUBTLV_SPB_INSTANCE_VLAN_TUPLE_LEN ; stlv_len = stlv_len <S2SV_ModStart> case ISIS_SUBTLV_SPBM_SI : if ( stlv_len < 8 ) goto trunc <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> break ; } tptr += stlv_len ; len -= stlv_len ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5766\n\n```\nCWE-190 static int _gd2GetHeader ( gdIOCtxPtr in , int * sx , int * sy , int * cs , int * vers , int * fmt , int * ncx , int * ncy , t_chunk_info * * chunkIdx ) { int i ; int ch ; char id [ 5 ] ; t_chunk_info * cidx ; int sidx ; int nc ; GD2_DBG ( php_gd_error ( \"Reading<S2SV_blank>gd2<S2SV_blank>header<S2SV_blank>info\" ) ) ; for ( i = 0 ; i < 4 ; i ++ ) { ch = gdGetC ( in ) ; if ( ch == EOF ) { goto fail1 ; } id [ i ] = ch ; } id [ 4 ] = 0 ; GD2_DBG ( php_gd_error ( \"Got<S2SV_blank>file<S2SV_blank>code:<S2SV_blank>%s\" , id ) ) ; if ( strcmp ( id , GD2_ID ) != 0 ) { GD2_DBG ( php_gd_error ( \"Not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>gd2<S2SV_blank>file\" ) ) ; goto fail1 ; } if ( gdGetWord ( vers , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"Version:<S2SV_blank>%d\" , * vers ) ) ; if ( ( * vers != 1 ) && ( * vers != 2 ) ) { GD2_DBG ( php_gd_error ( \"Bad<S2SV_blank>version:<S2SV_blank>%d\" , * vers ) ) ; goto fail1 ; } if ( ! gdGetWord ( sx , in ) ) { GD2_DBG ( php_gd_error ( \"Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>x-size\" ) ) ; goto fail1 ; } if ( ! gdGetWord ( sy , in ) ) { GD2_DBG ( php_gd_error ( \"Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>y-size\" ) ) ; goto fail1 ; } GD2_DBG ( php_gd_error ( \"Image<S2SV_blank>is<S2SV_blank>%dx%d\" , * sx , * sy ) ) ; if ( gdGetWord ( cs , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"ChunkSize:<S2SV_blank>%d\" , * cs ) ) ; if ( ( * cs < GD2_CHUNKSIZE_MIN ) || ( * cs > GD2_CHUNKSIZE_MAX ) ) { GD2_DBG ( php_gd_error ( \"Bad<S2SV_blank>chunk<S2SV_blank>size:<S2SV_blank>%d\" , * cs ) ) ; goto fail1 ; } if ( gdGetWord ( fmt , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"Format:<S2SV_blank>%d\" , * fmt ) ) ; if ( ( * fmt != GD2_FMT_RAW ) && ( * fmt != GD2_FMT_COMPRESSED ) && ( * fmt != GD2_FMT_TRUECOLOR_RAW ) && ( * fmt != GD2_FMT_TRUECOLOR_COMPRESSED ) ) { GD2_DBG ( php_gd_error ( \"Bad<S2SV_blank>data<S2SV_blank>format:<S2SV_blank>%d\" , * fmt ) ) ; goto fail1 ; } if ( gdGetWord ( ncx , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"%d<S2SV_blank>Chunks<S2SV_blank>Wide\" , * ncx ) ) ; if ( gdGetWord ( ncy , in ) != 1 ) { goto fail1 ; } GD2_DBG ( php_gd_error ( \"%d<S2SV_blank>Chunks<S2SV_blank>vertically\" , * ncy ) ) ; if ( gd2_compressed ( * fmt ) ) { nc = ( * ncx ) * ( * ncy ) ; GD2_DBG ( php_gd_error ( \"Reading<S2SV_blank>%d<S2SV_blank>chunk<S2SV_blank>index<S2SV_blank>entries\" , nc ) ) ; <S2SV_StartBug> sidx = sizeof ( t_chunk_info ) * nc ; <S2SV_EndBug> if ( sidx <= 0 ) { goto fail1 ; } <S2SV_StartBug> cidx = gdCalloc ( sidx , 1 ) ; <S2SV_EndBug> for ( i = 0 ; i < nc ; i ++ ) { if ( gdGetInt ( & cidx [ i ] . offset , in ) != 1 ) { gdFree ( cidx ) ; goto fail1 ; } if ( gdGetInt ( & cidx [ i ] . size , in ) != 1 ) { gdFree ( cidx ) ; goto fail1 ; } if ( cidx [ i ] . offset < 0 || cidx [ i ] . size < 0 ) { gdFree ( cidx ) ; goto fail1 ; } } * chunkIdx = cidx ; } GD2_DBG ( php_gd_error ( \"gd2<S2SV_blank>header<S2SV_blank>complete\" ) ) ; return 1 ; fail1 : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( overflow2 ( sidx , nc ) ) { goto fail1 ; } <S2SV_ModStart> 1 ) ; if ( cidx == NULL ) { goto fail1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int PredictorDecodeTile ( TIFF * tif , uint8 * op0 , tmsize_t occ0 , uint16 s ) { TIFFPredictorState * sp = PredictorState ( tif ) ; assert ( sp != NULL ) ; assert ( sp -> decodetile != NULL ) ; if ( ( * sp -> decodetile ) ( tif , op0 , occ0 , s ) ) { tmsize_t rowsize = sp -> rowsize ; assert ( rowsize > 0 ) ; <S2SV_StartBug> assert ( ( occ0 % rowsize ) == 0 ) ; <S2SV_EndBug> assert ( sp -> decodepfunc != NULL ) ; while ( occ0 > 0 ) { <S2SV_StartBug> ( * sp -> decodepfunc ) ( tif , op0 , rowsize ) ; <S2SV_EndBug> occ0 -= rowsize ; op0 += rowsize ; } return 1 ; } else return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; if <S2SV_ModEnd> ( ( occ0 <S2SV_ModStart> % rowsize ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"PredictorDecodeTile\" , \"%s\" , \"occ0%rowsize<S2SV_blank>!=<S2SV_blank>0\" ) ; return 0 ; } <S2SV_ModEnd> assert ( sp <S2SV_ModStart> 0 ) { if ( ! <S2SV_ModStart> , rowsize ) ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3631\n\n```\nCWE-000 int assoc_array_gc ( struct assoc_array * array , const struct assoc_array_ops * ops , bool ( * iterator ) ( void * object , void * iterator_data ) , void * iterator_data ) { struct assoc_array_shortcut * shortcut , * new_s ; struct assoc_array_node * node , * new_n ; struct assoc_array_edit * edit ; struct assoc_array_ptr * cursor , * ptr ; struct assoc_array_ptr * new_root , * new_parent , * * new_ptr_pp ; unsigned long nr_leaves_on_tree ; int keylen , slot , nr_free , next_slot , i ; pr_devel ( \"-->%s()\\\\n\" , __func__ ) ; if ( ! array -> root ) return 0 ; edit = kzalloc ( sizeof ( struct assoc_array_edit ) , GFP_KERNEL ) ; if ( ! edit ) return - ENOMEM ; edit -> array = array ; edit -> ops = ops ; edit -> ops_for_excised_subtree = ops ; edit -> set [ 0 ] . ptr = & array -> root ; edit -> excised_subtree = array -> root ; new_root = new_parent = NULL ; new_ptr_pp = & new_root ; cursor = array -> root ; descend : if ( assoc_array_ptr_is_shortcut ( cursor ) ) { shortcut = assoc_array_ptr_to_shortcut ( cursor ) ; keylen = round_up ( shortcut -> skip_to_level , ASSOC_ARRAY_KEY_CHUNK_SIZE ) ; keylen >>= ASSOC_ARRAY_KEY_CHUNK_SHIFT ; new_s = kmalloc ( sizeof ( struct assoc_array_shortcut ) + keylen * sizeof ( unsigned long ) , GFP_KERNEL ) ; if ( ! new_s ) goto enomem ; pr_devel ( \"dup<S2SV_blank>shortcut<S2SV_blank>%p<S2SV_blank>-><S2SV_blank>%p\\\\n\" , shortcut , new_s ) ; memcpy ( new_s , shortcut , ( sizeof ( struct assoc_array_shortcut ) + keylen * sizeof ( unsigned long ) ) ) ; new_s -> back_pointer = new_parent ; new_s -> parent_slot = shortcut -> parent_slot ; * new_ptr_pp = new_parent = assoc_array_shortcut_to_ptr ( new_s ) ; new_ptr_pp = & new_s -> next_node ; cursor = shortcut -> next_node ; } node = assoc_array_ptr_to_node ( cursor ) ; new_n = kzalloc ( sizeof ( struct assoc_array_node ) , GFP_KERNEL ) ; if ( ! new_n ) goto enomem ; pr_devel ( \"dup<S2SV_blank>node<S2SV_blank>%p<S2SV_blank>-><S2SV_blank>%p\\\\n\" , node , new_n ) ; new_n -> back_pointer = new_parent ; new_n -> parent_slot = node -> parent_slot ; * new_ptr_pp = new_parent = assoc_array_node_to_ptr ( new_n ) ; new_ptr_pp = NULL ; slot = 0 ; continue_node : for ( ; slot < ASSOC_ARRAY_FAN_OUT ; slot ++ ) { ptr = node -> slots [ slot ] ; if ( ! ptr ) continue ; if ( assoc_array_ptr_is_leaf ( ptr ) ) { if ( iterator ( assoc_array_ptr_to_leaf ( ptr ) , iterator_data ) ) new_n -> slots [ slot ] = ptr ; continue ; } new_ptr_pp = & new_n -> slots [ slot ] ; cursor = ptr ; goto descend ; } pr_devel ( \"--<S2SV_blank>compress<S2SV_blank>node<S2SV_blank>%p<S2SV_blank>--\\\\n\" , new_n ) ; new_n -> nr_leaves_on_branch = 0 ; nr_free = 0 ; for ( slot = 0 ; slot < ASSOC_ARRAY_FAN_OUT ; slot ++ ) { ptr = new_n -> slots [ slot ] ; if ( ! ptr ) nr_free ++ ; else if ( assoc_array_ptr_is_leaf ( ptr ) ) new_n -> nr_leaves_on_branch ++ ; } pr_devel ( \"free=%d,<S2SV_blank>leaves=%lu\\\\n\" , nr_free , new_n -> nr_leaves_on_branch ) ; next_slot = 0 ; for ( slot = 0 ; slot < ASSOC_ARRAY_FAN_OUT ; slot ++ ) { struct assoc_array_shortcut * s ; struct assoc_array_node * child ; ptr = new_n -> slots [ slot ] ; if ( ! ptr || assoc_array_ptr_is_leaf ( ptr ) ) continue ; s = NULL ; if ( assoc_array_ptr_is_shortcut ( ptr ) ) { s = assoc_array_ptr_to_shortcut ( ptr ) ; ptr = s -> next_node ; } child = assoc_array_ptr_to_node ( ptr ) ; new_n -> nr_leaves_on_branch += child -> nr_leaves_on_branch ; if ( child -> nr_leaves_on_branch <= nr_free + 1 ) { pr_devel ( \"[%d]<S2SV_blank>fold<S2SV_blank>node<S2SV_blank>%lu/%d<S2SV_blank>[nx<S2SV_blank>%d]\\\\n\" , slot , child -> nr_leaves_on_branch , nr_free + 1 , next_slot ) ; BUG_ON ( s ) ; new_n -> slots [ slot ] = NULL ; nr_free ++ ; if ( slot < next_slot ) next_slot = slot ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { struct assoc_array_ptr * p = child -> slots [ i ] ; if ( ! p ) continue ; BUG_ON ( assoc_array_ptr_is_meta ( p ) ) ; while ( new_n -> slots [ next_slot ] ) next_slot ++ ; BUG_ON ( next_slot >= ASSOC_ARRAY_FAN_OUT ) ; new_n -> slots [ next_slot ++ ] = p ; nr_free -- ; } kfree ( child ) ; } else { pr_devel ( \"[%d]<S2SV_blank>retain<S2SV_blank>node<S2SV_blank>%lu/%d<S2SV_blank>[nx<S2SV_blank>%d]\\\\n\" , slot , child -> nr_leaves_on_branch , nr_free + 1 , next_slot ) ; } } pr_devel ( \"after:<S2SV_blank>%lu\\\\n\" , new_n -> nr_leaves_on_branch ) ; nr_leaves_on_tree = new_n -> nr_leaves_on_branch ; if ( nr_free == ASSOC_ARRAY_FAN_OUT - 1 ) { for ( slot = 0 ; slot < ASSOC_ARRAY_FAN_OUT ; slot ++ ) if ( ( ptr = new_n -> slots [ slot ] ) ) break ; if ( assoc_array_ptr_is_meta ( ptr ) && assoc_array_ptr_is_shortcut ( ptr ) ) { pr_devel ( \"excise<S2SV_blank>node<S2SV_blank>%p<S2SV_blank>with<S2SV_blank>1<S2SV_blank>shortcut\\\\n\" , new_n ) ; new_s = assoc_array_ptr_to_shortcut ( ptr ) ; new_parent = new_n -> back_pointer ; slot = new_n -> parent_slot ; kfree ( new_n ) ; if ( ! new_parent ) { new_s -> back_pointer = NULL ; new_s -> parent_slot = 0 ; new_root = ptr ; goto gc_complete ; } if ( assoc_array_ptr_is_shortcut ( new_parent ) ) { struct assoc_array_shortcut * s = assoc_array_ptr_to_shortcut ( new_parent ) ; pr_devel ( \"excise<S2SV_blank>preceding<S2SV_blank>shortcut\\\\n\" ) ; new_parent = new_s -> back_pointer = s -> back_pointer ; slot = new_s -> parent_slot = s -> parent_slot ; kfree ( s ) ; if ( ! new_parent ) { new_s -> back_pointer = NULL ; new_s -> parent_slot = 0 ; new_root = ptr ; goto gc_complete ; } } new_s -> back_pointer = new_parent ; new_s -> parent_slot = slot ; new_n = assoc_array_ptr_to_node ( new_parent ) ; new_n -> slots [ slot ] = ptr ; goto ascend_old_tree ; } } ptr = new_n -> back_pointer ; if ( ! ptr ) goto gc_complete ; if ( assoc_array_ptr_is_shortcut ( ptr ) ) { new_s = assoc_array_ptr_to_shortcut ( ptr ) ; new_parent = new_s -> back_pointer ; slot = new_s -> parent_slot ; if ( new_n -> nr_leaves_on_branch <= ASSOC_ARRAY_FAN_OUT ) { struct assoc_array_node * n ; pr_devel ( \"excise<S2SV_blank>shortcut\\\\n\" ) ; new_n -> back_pointer = new_parent ; new_n -> parent_slot = slot ; kfree ( new_s ) ; if ( ! new_parent ) { new_root = assoc_array_node_to_ptr ( new_n ) ; goto gc_complete ; } n = assoc_array_ptr_to_node ( new_parent ) ; n -> slots [ slot ] = assoc_array_node_to_ptr ( new_n ) ; } } else { new_parent = ptr ; } new_n = assoc_array_ptr_to_node ( new_parent ) ; ascend_old_tree : ptr = node -> back_pointer ; if ( assoc_array_ptr_is_shortcut ( ptr ) ) { shortcut = assoc_array_ptr_to_shortcut ( ptr ) ; slot = shortcut -> parent_slot ; cursor = shortcut -> back_pointer ; <S2SV_StartBug> } else { <S2SV_EndBug> slot = node -> parent_slot ; cursor = ptr ; } <S2SV_StartBug> BUG_ON ( ! ptr ) ; <S2SV_EndBug> node = assoc_array_ptr_to_node ( cursor ) ; slot ++ ; goto continue_node ; gc_complete : edit -> set [ 0 ] . to = new_root ; assoc_array_apply_edit ( edit ) ; array -> nr_leaves_on_tree = nr_leaves_on_tree ; return 0 ; enomem : pr_devel ( \"enomem\\\\n\" ) ; assoc_array_destroy_subtree ( new_root , edit -> ops ) ; kfree ( edit ) ; return - ENOMEM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> back_pointer ; if ( ! cursor ) goto gc_complete ; <S2SV_ModStart> BUG_ON ( ! cursor <S2SV_ModEnd> ) ; node\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8953\n\n```\nCWE-399 static int ovl_copy_up_locked ( struct dentry * workdir , struct dentry * upperdir , struct dentry * dentry , struct path * lowerpath , struct kstat * stat , struct iattr * attr , const char * link ) { struct inode * wdir = workdir -> d_inode ; struct inode * udir = upperdir -> d_inode ; struct dentry * newdentry = NULL ; struct dentry * upper = NULL ; umode_t mode = stat -> mode ; int err ; newdentry = ovl_lookup_temp ( workdir , dentry ) ; err = PTR_ERR ( newdentry ) ; if ( IS_ERR ( newdentry ) ) goto out ; upper = lookup_one_len ( dentry -> d_name . name , upperdir , dentry -> d_name . len ) ; err = PTR_ERR ( upper ) ; if ( IS_ERR ( upper ) ) goto out1 ; stat -> mode &= S_IFMT ; err = ovl_create_real ( wdir , newdentry , stat , link , NULL , true ) ; stat -> mode = mode ; if ( err ) goto out2 ; if ( S_ISREG ( stat -> mode ) ) { struct path upperpath ; ovl_path_upper ( dentry , & upperpath ) ; BUG_ON ( upperpath . dentry != NULL ) ; upperpath . dentry = newdentry ; err = ovl_copy_up_data ( lowerpath , & upperpath , stat -> size ) ; if ( err ) goto out_cleanup ; } err = ovl_copy_xattr ( lowerpath -> dentry , newdentry ) ; if ( err ) goto out_cleanup ; mutex_lock ( & newdentry -> d_inode -> i_mutex ) ; err = ovl_set_attr ( newdentry , stat ) ; if ( ! err && attr ) err = notify_change ( newdentry , attr , NULL ) ; mutex_unlock ( & newdentry -> d_inode -> i_mutex ) ; if ( err ) goto out_cleanup ; err = ovl_do_rename ( wdir , newdentry , udir , upper , 0 ) ; if ( err ) goto out_cleanup ; ovl_dentry_update ( dentry , newdentry ) ; newdentry = NULL ; if ( ! S_ISDIR ( stat -> mode ) ) ovl_dentry_set_opaque ( dentry , true ) ; out2 : dput ( upper ) ; out1 : dput ( newdentry ) ; out : return err ; out_cleanup : ovl_cleanup ( wdir , newdentry ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; goto out2 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8629\n\n```\nCWE-125 bool_t xdr_nullstring ( XDR * xdrs , char * * objp ) { u_int size ; if ( xdrs -> x_op == XDR_ENCODE ) { if ( * objp == NULL ) size = 0 ; else size = strlen ( * objp ) + 1 ; } if ( ! xdr_u_int ( xdrs , & size ) ) { return FALSE ; } switch ( xdrs -> x_op ) { case XDR_DECODE : if ( size == 0 ) { * objp = NULL ; return TRUE ; } else if ( * objp == NULL ) { * objp = ( char * ) mem_alloc ( size ) ; if ( * objp == NULL ) { errno = ENOMEM ; return FALSE ; } } <S2SV_StartBug> return ( xdr_opaque ( xdrs , * objp , size ) ) ; <S2SV_EndBug> case XDR_ENCODE : if ( size != 0 ) return ( xdr_opaque ( xdrs , * objp , size ) ) ; return TRUE ; case XDR_FREE : if ( * objp != NULL ) mem_free ( * objp , size ) ; * objp = NULL ; return TRUE ; } return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( ! <S2SV_ModEnd> xdr_opaque ( xdrs <S2SV_ModStart> size ) ) return FALSE ; if ( ( * objp ) [ size - 1 ] != '\\\\0' ) return FALSE ; if ( memchr ( * objp , '\\\\0' , size - 1 ) != NULL ) return FALSE ; return TRUE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12990\n\n```\nCWE-835 static const u_char * ikev2_n_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { const struct ikev2_n * p ; struct ikev2_n n ; const u_char * cp ; <S2SV_StartBug> u_char showspi , showdata , showsomedata ; <S2SV_EndBug> const char * notify_name ; uint32_t type ; p = ( const struct ikev2_n * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & n , ext , sizeof ( n ) ) ; ikev2_pay_print ( ndo , NPSTR ( ISAKMP_NPTYPE_N ) , n . h . critical ) ; showspi = 1 ; <S2SV_StartBug> showdata = 0 ; <S2SV_EndBug> showsomedata = 0 ; notify_name = NULL ; ND_PRINT ( ( ndo , \"<S2SV_blank>prot_id=%s\" , PROTOIDSTR ( n . prot_id ) ) ) ; type = ntohs ( n . type ) ; switch ( type ) { case IV2_NOTIFY_UNSUPPORTED_CRITICAL_PAYLOAD : notify_name = \"unsupported_critical_payload\" ; showspi = 0 ; break ; case IV2_NOTIFY_INVALID_IKE_SPI : notify_name = \"invalid_ike_spi\" ; showspi = 1 ; break ; case IV2_NOTIFY_INVALID_MAJOR_VERSION : notify_name = \"invalid_major_version\" ; showspi = 0 ; break ; case IV2_NOTIFY_INVALID_SYNTAX : notify_name = \"invalid_syntax\" ; showspi = 1 ; break ; case IV2_NOTIFY_INVALID_MESSAGE_ID : notify_name = \"invalid_message_id\" ; showspi = 1 ; break ; case IV2_NOTIFY_INVALID_SPI : notify_name = \"invalid_spi\" ; showspi = 1 ; break ; case IV2_NOTIFY_NO_PROPOSAL_CHOSEN : notify_name = \"no_protocol_chosen\" ; showspi = 1 ; break ; case IV2_NOTIFY_INVALID_KE_PAYLOAD : notify_name = \"invalid_ke_payload\" ; showspi = 1 ; break ; case IV2_NOTIFY_AUTHENTICATION_FAILED : notify_name = \"authentication_failed\" ; showspi = 1 ; break ; case IV2_NOTIFY_SINGLE_PAIR_REQUIRED : notify_name = \"single_pair_required\" ; showspi = 1 ; break ; case IV2_NOTIFY_NO_ADDITIONAL_SAS : notify_name = \"no_additional_sas\" ; showspi = 0 ; break ; case IV2_NOTIFY_INTERNAL_ADDRESS_FAILURE : notify_name = \"internal_address_failure\" ; showspi = 0 ; break ; case IV2_NOTIFY_FAILED_CP_REQUIRED : notify_name = \"failed:cp_required\" ; showspi = 0 ; break ; case IV2_NOTIFY_INVALID_SELECTORS : notify_name = \"invalid_selectors\" ; showspi = 0 ; break ; case IV2_NOTIFY_INITIAL_CONTACT : notify_name = \"initial_contact\" ; showspi = 0 ; break ; case IV2_NOTIFY_SET_WINDOW_SIZE : notify_name = \"set_window_size\" ; showspi = 0 ; break ; case IV2_NOTIFY_ADDITIONAL_TS_POSSIBLE : notify_name = \"additional_ts_possible\" ; showspi = 0 ; break ; case IV2_NOTIFY_IPCOMP_SUPPORTED : notify_name = \"ipcomp_supported\" ; showspi = 0 ; break ; case IV2_NOTIFY_NAT_DETECTION_SOURCE_IP : notify_name = \"nat_detection_source_ip\" ; showspi = 1 ; break ; case IV2_NOTIFY_NAT_DETECTION_DESTINATION_IP : notify_name = \"nat_detection_destination_ip\" ; showspi = 1 ; break ; case IV2_NOTIFY_COOKIE : notify_name = \"cookie\" ; showspi = 1 ; <S2SV_StartBug> showsomedata = 1 ; <S2SV_EndBug> showdata = 0 ; break ; case IV2_NOTIFY_USE_TRANSPORT_MODE : notify_name = \"use_transport_mode\" ; showspi = 0 ; break ; case IV2_NOTIFY_HTTP_CERT_LOOKUP_SUPPORTED : notify_name = \"http_cert_lookup_supported\" ; showspi = 0 ; break ; case IV2_NOTIFY_REKEY_SA : notify_name = \"rekey_sa\" ; showspi = 1 ; break ; case IV2_NOTIFY_ESP_TFC_PADDING_NOT_SUPPORTED : notify_name = \"tfc_padding_not_supported\" ; showspi = 0 ; break ; case IV2_NOTIFY_NON_FIRST_FRAGMENTS_ALSO : notify_name = \"non_first_fragment_also\" ; showspi = 0 ; break ; default : if ( type < 8192 ) { notify_name = \"error\" ; } else if ( type < 16384 ) { notify_name = \"private-error\" ; } else if ( type < 40960 ) { notify_name = \"status\" ; } else { notify_name = \"private-status\" ; } } if ( notify_name ) { ND_PRINT ( ( ndo , \"<S2SV_blank>type=%u(%s)\" , type , notify_name ) ) ; } if ( showspi && n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } cp = ( const u_char * ) ( p + 1 ) + n . spi_size ; <S2SV_StartBug> if ( 3 < ndo -> ndo_vflag ) { <S2SV_EndBug> showdata = 1 ; } <S2SV_StartBug> if ( ( showdata || ( showsomedata && ep - cp < 30 ) ) && cp < ep ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>data=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( cp ) , ep - cp ) ) goto trunc ; ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_StartBug> } else if ( showsomedata && cp < ep ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! ike_show_somedata ( ndo , cp , ep ) ) goto trunc ; <S2SV_EndBug> } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; u_char showspi <S2SV_ModEnd> , showsomedata ; <S2SV_ModStart> = 1 ; <S2SV_ModEnd> showsomedata = 0 <S2SV_ModStart> showsomedata = 1 <S2SV_ModEnd> ; break ; <S2SV_ModStart> ; if ( cp < ep ) { if ( <S2SV_ModEnd> ndo -> ndo_vflag <S2SV_ModStart> ndo -> ndo_vflag > 3 <S2SV_ModEnd> || ( showsomedata <S2SV_ModStart> 30 ) ) <S2SV_ModEnd> { ND_PRINT ( <S2SV_ModStart> if ( showsomedata <S2SV_ModEnd> ) { if <S2SV_ModStart> goto trunc ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 bool_t dm9000IrqHandler ( NetInterface * interface ) { bool_t flag ; uint8_t status ; uint8_t mask ; Dm9000Context * context ; flag = FALSE ; context = ( Dm9000Context * ) interface -> nicContext ; <S2SV_StartBug> status = dm9000ReadReg ( DM9000_REG_ISR ) ; <S2SV_EndBug> if ( ( status & ISR_LNKCHG ) != 0 ) { mask = dm9000ReadReg ( DM9000_REG_IMR ) ; <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_IMR , mask & ~ IMR_LNKCHGI ) ; <S2SV_EndBug> interface -> nicEvent = TRUE ; flag |= osSetEventFromIsr ( & netEvent ) ; } <S2SV_StartBug> if ( ( status & ISR_PT ) != 0 ) <S2SV_EndBug> { if ( dm9000ReadReg ( DM9000_REG_NSR ) & ( NSR_TX2END | NSR_TX1END ) ) { if ( context -> queuedPackets > 0 ) { context -> queuedPackets -- ; } flag |= osSetEventFromIsr ( & interface -> nicTxEvent ) ; } <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_ISR , ISR_PT ) ; <S2SV_EndBug> } if ( ( status & ISR_PR ) != 0 ) { mask = dm9000ReadReg ( DM9000_REG_IMR ) ; <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_IMR , mask & ~ IMR_PRI ) ; <S2SV_EndBug> interface -> nicEvent = TRUE ; flag |= osSetEventFromIsr ( & netEvent ) ; } return flag ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = dm9000ReadReg ( DM9000_ISR ) ; if ( ( status & DM9000_ISR_LNKCHG ) != 0 ) { mask = dm9000ReadReg ( DM9000_IMR <S2SV_ModEnd> ) ; dm9000WriteReg <S2SV_ModStart> ; dm9000WriteReg ( DM9000_IMR <S2SV_ModEnd> , mask & <S2SV_ModStart> mask & ~ DM9000_IMR_LNKCHGI <S2SV_ModEnd> ) ; interface <S2SV_ModStart> ( status & DM9000_ISR_PT ) != 0 ) { if ( ( dm9000ReadReg ( DM9000_NSR ) & ( DM9000_NSR_TX2END | DM9000_NSR_TX1END ) ) != 0 <S2SV_ModEnd> ) { if <S2SV_ModStart> } dm9000WriteReg ( DM9000_ISR , DM9000_ISR_PT ) ; } if ( ( status & DM9000_ISR_PR ) != 0 ) { mask = dm9000ReadReg ( DM9000_IMR <S2SV_ModEnd> ) ; dm9000WriteReg <S2SV_ModStart> ; dm9000WriteReg ( DM9000_IMR <S2SV_ModEnd> , mask & <S2SV_ModStart> mask & ~ DM9000_IMR_PRI <S2SV_ModEnd> ) ; interface\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7865\n\n```\nCWE-787 void avcodec_align_dimensions2 ( AVCodecContext * s , int * width , int * height , int linesize_align [ AV_NUM_DATA_POINTERS ] ) { int i ; int w_align = 1 ; int h_align = 1 ; AVPixFmtDescriptor const * desc = av_pix_fmt_desc_get ( s -> pix_fmt ) ; if ( desc ) { w_align = 1 << desc -> log2_chroma_w ; h_align = 1 << desc -> log2_chroma_h ; } switch ( s -> pix_fmt ) { case AV_PIX_FMT_YUV420P : case AV_PIX_FMT_YUYV422 : case AV_PIX_FMT_YVYU422 : case AV_PIX_FMT_UYVY422 : case AV_PIX_FMT_YUV422P : case AV_PIX_FMT_YUV440P : case AV_PIX_FMT_YUV444P : case AV_PIX_FMT_GBRP : case AV_PIX_FMT_GBRAP : case AV_PIX_FMT_GRAY8 : case AV_PIX_FMT_GRAY16BE : case AV_PIX_FMT_GRAY16LE : case AV_PIX_FMT_YUVJ420P : case AV_PIX_FMT_YUVJ422P : case AV_PIX_FMT_YUVJ440P : case AV_PIX_FMT_YUVJ444P : case AV_PIX_FMT_YUVA420P : case AV_PIX_FMT_YUVA422P : case AV_PIX_FMT_YUVA444P : case AV_PIX_FMT_YUV420P9LE : case AV_PIX_FMT_YUV420P9BE : case AV_PIX_FMT_YUV420P10LE : case AV_PIX_FMT_YUV420P10BE : case AV_PIX_FMT_YUV420P12LE : case AV_PIX_FMT_YUV420P12BE : case AV_PIX_FMT_YUV420P14LE : case AV_PIX_FMT_YUV420P14BE : case AV_PIX_FMT_YUV420P16LE : case AV_PIX_FMT_YUV420P16BE : case AV_PIX_FMT_YUVA420P9LE : case AV_PIX_FMT_YUVA420P9BE : case AV_PIX_FMT_YUVA420P10LE : case AV_PIX_FMT_YUVA420P10BE : case AV_PIX_FMT_YUVA420P16LE : case AV_PIX_FMT_YUVA420P16BE : case AV_PIX_FMT_YUV422P9LE : case AV_PIX_FMT_YUV422P9BE : case AV_PIX_FMT_YUV422P10LE : case AV_PIX_FMT_YUV422P10BE : case AV_PIX_FMT_YUV422P12LE : case AV_PIX_FMT_YUV422P12BE : case AV_PIX_FMT_YUV422P14LE : case AV_PIX_FMT_YUV422P14BE : case AV_PIX_FMT_YUV422P16LE : case AV_PIX_FMT_YUV422P16BE : case AV_PIX_FMT_YUVA422P9LE : case AV_PIX_FMT_YUVA422P9BE : case AV_PIX_FMT_YUVA422P10LE : case AV_PIX_FMT_YUVA422P10BE : case AV_PIX_FMT_YUVA422P16LE : case AV_PIX_FMT_YUVA422P16BE : case AV_PIX_FMT_YUV440P10LE : case AV_PIX_FMT_YUV440P10BE : case AV_PIX_FMT_YUV440P12LE : case AV_PIX_FMT_YUV440P12BE : case AV_PIX_FMT_YUV444P9LE : case AV_PIX_FMT_YUV444P9BE : case AV_PIX_FMT_YUV444P10LE : case AV_PIX_FMT_YUV444P10BE : case AV_PIX_FMT_YUV444P12LE : case AV_PIX_FMT_YUV444P12BE : case AV_PIX_FMT_YUV444P14LE : case AV_PIX_FMT_YUV444P14BE : case AV_PIX_FMT_YUV444P16LE : case AV_PIX_FMT_YUV444P16BE : case AV_PIX_FMT_YUVA444P9LE : case AV_PIX_FMT_YUVA444P9BE : case AV_PIX_FMT_YUVA444P10LE : case AV_PIX_FMT_YUVA444P10BE : case AV_PIX_FMT_YUVA444P16LE : case AV_PIX_FMT_YUVA444P16BE : case AV_PIX_FMT_GBRP9LE : case AV_PIX_FMT_GBRP9BE : case AV_PIX_FMT_GBRP10LE : case AV_PIX_FMT_GBRP10BE : case AV_PIX_FMT_GBRP12LE : case AV_PIX_FMT_GBRP12BE : case AV_PIX_FMT_GBRP14LE : case AV_PIX_FMT_GBRP14BE : case AV_PIX_FMT_GBRP16LE : case AV_PIX_FMT_GBRP16BE : case AV_PIX_FMT_GBRAP12LE : case AV_PIX_FMT_GBRAP12BE : case AV_PIX_FMT_GBRAP16LE : case AV_PIX_FMT_GBRAP16BE : w_align = 16 ; h_align = 16 * 2 ; break ; case AV_PIX_FMT_YUV411P : case AV_PIX_FMT_YUVJ411P : case AV_PIX_FMT_UYYVYY411 : w_align = 32 ; h_align = 16 * 2 ; break ; case AV_PIX_FMT_YUV410P : if ( s -> codec_id == AV_CODEC_ID_SVQ1 ) { w_align = 64 ; h_align = 64 ; } break ; case AV_PIX_FMT_RGB555 : if ( s -> codec_id == AV_CODEC_ID_RPZA ) { w_align = 4 ; h_align = 4 ; } <S2SV_StartBug> break ; <S2SV_EndBug> case AV_PIX_FMT_PAL8 : case AV_PIX_FMT_BGR8 : case AV_PIX_FMT_RGB8 : if ( s -> codec_id == AV_CODEC_ID_SMC || s -> codec_id == AV_CODEC_ID_CINEPAK ) { w_align = 4 ; h_align = 4 ; } <S2SV_StartBug> if ( s -> codec_id == AV_CODEC_ID_JV ) { <S2SV_EndBug> w_align = 8 ; h_align = 8 ; } break ; case AV_PIX_FMT_BGR24 : if ( ( s -> codec_id == AV_CODEC_ID_MSZH ) || ( s -> codec_id == AV_CODEC_ID_ZLIB ) ) { w_align = 4 ; h_align = 4 ; } break ; case AV_PIX_FMT_RGB24 : if ( s -> codec_id == AV_CODEC_ID_CINEPAK ) { w_align = 4 ; h_align = 4 ; } break ; default : break ; } if ( s -> codec_id == AV_CODEC_ID_IFF_ILBM ) { w_align = FFMAX ( w_align , 8 ) ; } * width = FFALIGN ( * width , w_align ) ; * height = FFALIGN ( * height , h_align ) ; if ( s -> codec_id == AV_CODEC_ID_H264 || s -> lowres ) { * height += 2 ; * width = FFMAX ( * width , 32 ) ; } for ( i = 0 ; i < 4 ; i ++ ) linesize_align [ i ] = STRIDE_ALIGN ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 4 ; } if ( s -> codec_id == AV_CODEC_ID_INTERPLAY_VIDEO ) { w_align = 8 ; h_align = 8 ; } <S2SV_ModStart> codec_id == AV_CODEC_ID_JV || s -> codec_id == AV_CODEC_ID_INTERPLAY_VIDEO\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static int ext4_show_options ( struct seq_file * seq , struct vfsmount * vfs ) { int def_errors ; unsigned long def_mount_opts ; struct super_block * sb = vfs -> mnt_sb ; struct ext4_sb_info * sbi = EXT4_SB ( sb ) ; struct ext4_super_block * es = sbi -> s_es ; def_mount_opts = le32_to_cpu ( es -> s_default_mount_opts ) ; def_errors = le16_to_cpu ( es -> s_errors ) ; if ( sbi -> s_sb_block != 1 ) seq_printf ( seq , \",sb=%llu\" , sbi -> s_sb_block ) ; if ( test_opt ( sb , MINIX_DF ) ) seq_puts ( seq , \",minixdf\" ) ; if ( test_opt ( sb , GRPID ) && ! ( def_mount_opts & EXT4_DEFM_BSDGROUPS ) ) seq_puts ( seq , \",grpid\" ) ; if ( ! test_opt ( sb , GRPID ) && ( def_mount_opts & EXT4_DEFM_BSDGROUPS ) ) seq_puts ( seq , \",nogrpid\" ) ; if ( sbi -> s_resuid != EXT4_DEF_RESUID || le16_to_cpu ( es -> s_def_resuid ) != EXT4_DEF_RESUID ) { seq_printf ( seq , \",resuid=%u\" , sbi -> s_resuid ) ; } if ( sbi -> s_resgid != EXT4_DEF_RESGID || le16_to_cpu ( es -> s_def_resgid ) != EXT4_DEF_RESGID ) { seq_printf ( seq , \",resgid=%u\" , sbi -> s_resgid ) ; } if ( test_opt ( sb , ERRORS_RO ) ) { if ( def_errors == EXT4_ERRORS_PANIC || def_errors == EXT4_ERRORS_CONTINUE ) { seq_puts ( seq , \",errors=remount-ro\" ) ; } } if ( test_opt ( sb , ERRORS_CONT ) && def_errors != EXT4_ERRORS_CONTINUE ) seq_puts ( seq , \",errors=continue\" ) ; if ( test_opt ( sb , ERRORS_PANIC ) && def_errors != EXT4_ERRORS_PANIC ) seq_puts ( seq , \",errors=panic\" ) ; if ( test_opt ( sb , NO_UID32 ) && ! ( def_mount_opts & EXT4_DEFM_UID16 ) ) seq_puts ( seq , \",nouid32\" ) ; if ( test_opt ( sb , DEBUG ) && ! ( def_mount_opts & EXT4_DEFM_DEBUG ) ) seq_puts ( seq , \",debug\" ) ; if ( test_opt ( sb , OLDALLOC ) ) seq_puts ( seq , \",oldalloc\" ) ; # ifdef CONFIG_EXT4_FS_XATTR if ( test_opt ( sb , XATTR_USER ) && ! ( def_mount_opts & EXT4_DEFM_XATTR_USER ) ) seq_puts ( seq , \",user_xattr\" ) ; if ( ! test_opt ( sb , XATTR_USER ) && ( def_mount_opts & EXT4_DEFM_XATTR_USER ) ) { seq_puts ( seq , \",nouser_xattr\" ) ; } # endif # ifdef CONFIG_EXT4_FS_POSIX_ACL if ( test_opt ( sb , POSIX_ACL ) && ! ( def_mount_opts & EXT4_DEFM_ACL ) ) seq_puts ( seq , \",acl\" ) ; if ( ! test_opt ( sb , POSIX_ACL ) && ( def_mount_opts & EXT4_DEFM_ACL ) ) seq_puts ( seq , \",noacl\" ) ; # endif if ( sbi -> s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ) { seq_printf ( seq , \",commit=%u\" , ( unsigned ) ( sbi -> s_commit_interval / HZ ) ) ; } if ( sbi -> s_min_batch_time != EXT4_DEF_MIN_BATCH_TIME ) { seq_printf ( seq , \",min_batch_time=%u\" , ( unsigned ) sbi -> s_min_batch_time ) ; } if ( sbi -> s_max_batch_time != EXT4_DEF_MAX_BATCH_TIME ) { seq_printf ( seq , \",max_batch_time=%u\" , ( unsigned ) sbi -> s_min_batch_time ) ; } seq_puts ( seq , \",barrier=\" ) ; seq_puts ( seq , test_opt ( sb , BARRIER ) ? \"1\" : \"0\" ) ; if ( test_opt ( sb , JOURNAL_ASYNC_COMMIT ) ) seq_puts ( seq , \",journal_async_commit\" ) ; if ( test_opt ( sb , NOBH ) ) seq_puts ( seq , \",nobh\" ) ; if ( test_opt ( sb , I_VERSION ) ) seq_puts ( seq , \",i_version\" ) ; if ( ! test_opt ( sb , DELALLOC ) ) seq_puts ( seq , \",nodelalloc\" ) ; if ( sbi -> s_stripe ) seq_printf ( seq , \",stripe=%lu\" , sbi -> s_stripe ) ; if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) seq_puts ( seq , \",data=journal\" ) ; else if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_ORDERED_DATA ) seq_puts ( seq , \",data=ordered\" ) ; else if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_WRITEBACK_DATA ) seq_puts ( seq , \",data=writeback\" ) ; if ( sbi -> s_inode_readahead_blks != EXT4_DEF_INODE_READAHEAD_BLKS ) seq_printf ( seq , \",inode_readahead_blks=%u\" , sbi -> s_inode_readahead_blks ) ; if ( test_opt ( sb , DATA_ERR_ABORT ) ) seq_puts ( seq , \",data_err=abort\" ) ; if ( test_opt ( sb , NO_AUTO_DA_ALLOC ) ) seq_puts ( seq , \",noauto_da_alloc\" ) ; if ( test_opt ( sb , DISCARD ) ) seq_puts ( seq , \",discard\" ) ; if ( test_opt ( sb , NOLOAD ) ) seq_puts ( seq , \",norecovery\" ) ; <S2SV_StartBug> ext4_show_quota_options ( seq , sb ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \",norecovery\" ) ; if ( test_opt ( sb , DIOREAD_NOLOCK ) ) seq_puts ( seq , \",dioread_nolock\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4118\n\n```\nCWE-476 BOOL security_decrypt ( BYTE * data , int length , rdpRdp * rdp ) <S2SV_StartBug> { <S2SV_EndBug> if ( rdp -> decrypt_use_count >= 4096 ) { security_key_update ( rdp -> decrypt_key , rdp -> decrypt_update_key , rdp -> rc4_key_len ) ; crypto_rc4_free ( rdp -> rc4_decrypt_key ) ; rdp -> rc4_decrypt_key = crypto_rc4_init ( rdp -> decrypt_key , rdp -> rc4_key_len ) ; rdp -> decrypt_use_count = 0 ; } crypto_rc4 ( rdp -> rc4_decrypt_key , length , data , data ) ; rdp -> decrypt_use_count += 1 ; rdp -> decrypt_checksum_use_count ++ ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rdp ) { if ( rdp -> rc4_decrypt_key == NULL ) return FALSE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5892\n\n```\nCWE-000 bgp_attr_parse_ret_t bgp_attr_parse ( struct peer * peer , struct attr * attr , bgp_size_t size , struct bgp_nlri * mp_update , struct bgp_nlri * mp_withdraw ) { bgp_attr_parse_ret_t ret ; uint8_t flag = 0 ; uint8_t type = 0 ; bgp_size_t length ; uint8_t * startp , * endp ; uint8_t * attr_endp ; uint8_t seen [ BGP_ATTR_BITMAP_SIZE ] ; struct aspath * as4_path = NULL ; as_t as4_aggregator = 0 ; struct in_addr as4_aggregator_addr = { . s_addr = 0 } ; memset ( seen , 0 , BGP_ATTR_BITMAP_SIZE ) ; endp = BGP_INPUT_PNT ( peer ) + size ; while ( BGP_INPUT_PNT ( peer ) < endp ) { if ( endp - BGP_INPUT_PNT ( peer ) < BGP_ATTR_MIN_LEN ) { flog_warn ( EC_BGP_ATTRIBUTE_TOO_SMALL , \"%s:<S2SV_blank>error<S2SV_blank>BGP<S2SV_blank>attribute<S2SV_blank>length<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>min<S2SV_blank>len\" , peer -> host , ( unsigned long ) ( endp - stream_pnt ( BGP_INPUT ( peer ) ) ) ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR ) ; return BGP_ATTR_PARSE_ERROR ; } startp = BGP_INPUT_PNT ( peer ) ; flag = 0xF0 & stream_getc ( BGP_INPUT ( peer ) ) ; type = stream_getc ( BGP_INPUT ( peer ) ) ; if ( CHECK_FLAG ( flag , BGP_ATTR_FLAG_EXTLEN ) && ( ( endp - startp ) < ( BGP_ATTR_MIN_LEN + 1 ) ) ) { flog_warn ( EC_BGP_EXT_ATTRIBUTE_TOO_SMALL , \"%s:<S2SV_blank>Extended<S2SV_blank>length<S2SV_blank>set,<S2SV_blank>but<S2SV_blank>just<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>attr<S2SV_blank>header\" , peer -> host , ( unsigned long ) ( endp - stream_pnt ( BGP_INPUT ( peer ) ) ) ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR ) ; return BGP_ATTR_PARSE_ERROR ; } if ( CHECK_FLAG ( flag , BGP_ATTR_FLAG_EXTLEN ) ) length = stream_getw ( BGP_INPUT ( peer ) ) ; else length = stream_getc ( BGP_INPUT ( peer ) ) ; if ( CHECK_BITMAP ( seen , type ) ) { flog_warn ( EC_BGP_ATTRIBUTE_REPEATED , \"%s:<S2SV_blank>error<S2SV_blank>BGP<S2SV_blank>attribute<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>appears<S2SV_blank>twice<S2SV_blank>in<S2SV_blank>a<S2SV_blank>message\" , peer -> host , type ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_MAL_ATTR ) ; return BGP_ATTR_PARSE_ERROR ; } SET_BITMAP ( seen , type ) ; attr_endp = BGP_INPUT_PNT ( peer ) + length ; if ( attr_endp > endp ) { flog_warn ( EC_BGP_ATTRIBUTE_TOO_LARGE , \"%s:<S2SV_blank>BGP<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>length<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large,<S2SV_blank>attribute<S2SV_blank>total<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d.<S2SV_blank><S2SV_blank>attr_endp<S2SV_blank>is<S2SV_blank>%p.<S2SV_blank><S2SV_blank>endp<S2SV_blank>is<S2SV_blank>%p\" , peer -> host , type , length , size , attr_endp , endp ) ; unsigned char ndata [ BGP_MAX_PACKET_SIZE ] ; memset ( ndata , 0x00 , sizeof ( ndata ) ) ; size_t lfl = CHECK_FLAG ( flag , BGP_ATTR_FLAG_EXTLEN ) ? 2 : 1 ; stream_forward_getp ( BGP_INPUT ( peer ) , - ( 1 + lfl ) ) ; stream_get ( & ndata [ 0 ] , BGP_INPUT ( peer ) , 1 ) ; stream_get ( & ndata [ 1 ] , BGP_INPUT ( peer ) , lfl ) ; size_t atl = attr_endp - startp ; size_t ndl = MIN ( atl , STREAM_READABLE ( BGP_INPUT ( peer ) ) ) ; stream_get ( & ndata [ lfl + 1 ] , BGP_INPUT ( peer ) , ndl ) ; bgp_notify_send_with_data ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR , ndata , ndl + lfl + 1 ) ; return BGP_ATTR_PARSE_ERROR ; } struct bgp_attr_parser_args attr_args = { . peer = peer , . length = length , . attr = attr , . type = type , . flags = flag , . startp = startp , . total = attr_endp - startp , } ; if ( bgp_attr_flag_invalid ( & attr_args ) ) { ret = bgp_attr_malformed ( & attr_args , BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR , attr_args . total ) ; if ( ret == BGP_ATTR_PARSE_PROCEED ) continue ; return ret ; } switch ( type ) { case BGP_ATTR_ORIGIN : ret = bgp_attr_origin ( & attr_args ) ; break ; case BGP_ATTR_AS_PATH : ret = bgp_attr_aspath ( & attr_args ) ; break ; case BGP_ATTR_AS4_PATH : ret = bgp_attr_as4_path ( & attr_args , & as4_path ) ; break ; case BGP_ATTR_NEXT_HOP : ret = bgp_attr_nexthop ( & attr_args ) ; break ; case BGP_ATTR_MULTI_EXIT_DISC : ret = bgp_attr_med ( & attr_args ) ; break ; case BGP_ATTR_LOCAL_PREF : ret = bgp_attr_local_pref ( & attr_args ) ; break ; case BGP_ATTR_ATOMIC_AGGREGATE : ret = bgp_attr_atomic ( & attr_args ) ; break ; case BGP_ATTR_AGGREGATOR : ret = bgp_attr_aggregator ( & attr_args ) ; break ; case BGP_ATTR_AS4_AGGREGATOR : ret = bgp_attr_as4_aggregator ( & attr_args , & as4_aggregator , & as4_aggregator_addr ) ; break ; case BGP_ATTR_COMMUNITIES : ret = bgp_attr_community ( & attr_args ) ; break ; case BGP_ATTR_LARGE_COMMUNITIES : ret = bgp_attr_large_community ( & attr_args ) ; break ; case BGP_ATTR_ORIGINATOR_ID : ret = bgp_attr_originator_id ( & attr_args ) ; break ; case BGP_ATTR_CLUSTER_LIST : ret = bgp_attr_cluster_list ( & attr_args ) ; break ; case BGP_ATTR_MP_REACH_NLRI : ret = bgp_mp_reach_parse ( & attr_args , mp_update ) ; break ; case BGP_ATTR_MP_UNREACH_NLRI : ret = bgp_mp_unreach_parse ( & attr_args , mp_withdraw ) ; break ; case BGP_ATTR_EXT_COMMUNITIES : ret = bgp_attr_ext_communities ( & attr_args ) ; break ; <S2SV_StartBug> # if ENABLE_BGP_VNC <S2SV_EndBug> case BGP_ATTR_VNC : # endif case BGP_ATTR_ENCAP : ret = bgp_attr_encap ( type , peer , length , attr , flag , startp ) ; break ; case BGP_ATTR_PREFIX_SID : ret = bgp_attr_prefix_sid ( length , & attr_args , mp_update ) ; break ; case BGP_ATTR_PMSI_TUNNEL : ret = bgp_attr_pmsi_tunnel ( & attr_args ) ; break ; default : ret = bgp_attr_unknown ( & attr_args ) ; break ; } if ( ret == BGP_ATTR_PARSE_ERROR_NOTIFYPLS ) { bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_MAL_ATTR ) ; ret = BGP_ATTR_PARSE_ERROR ; } if ( ret == BGP_ATTR_PARSE_EOR ) { if ( as4_path ) aspath_unintern ( & as4_path ) ; return ret ; } if ( ret == BGP_ATTR_PARSE_ERROR ) { flog_warn ( EC_BGP_ATTRIBUTE_PARSE_ERROR , \"%s:<S2SV_blank>Attribute<S2SV_blank>%s,<S2SV_blank>parse<S2SV_blank>error\" , peer -> host , lookup_msg ( attr_str , type , NULL ) ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return ret ; } if ( ret == BGP_ATTR_PARSE_WITHDRAW ) { flog_warn ( EC_BGP_ATTRIBUTE_PARSE_WITHDRAW , \"%s:<S2SV_blank>Attribute<S2SV_blank>%s,<S2SV_blank>parse<S2SV_blank>error<S2SV_blank>-<S2SV_blank>treating<S2SV_blank>as<S2SV_blank>withdrawal\" , peer -> host , lookup_msg ( attr_str , type , NULL ) ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return ret ; } if ( BGP_INPUT_PNT ( peer ) != attr_endp ) { flog_warn ( EC_BGP_ATTRIBUTE_FETCH_ERROR , \"%s:<S2SV_blank>BGP<S2SV_blank>attribute<S2SV_blank>%s,<S2SV_blank>fetch<S2SV_blank>error\" , peer -> host , lookup_msg ( attr_str , type , NULL ) ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return BGP_ATTR_PARSE_ERROR ; } } if ( BGP_INPUT_PNT ( peer ) != endp ) { flog_warn ( EC_BGP_ATTRIBUTES_MISMATCH , \"%s:<S2SV_blank>BGP<S2SV_blank>attribute<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>mismatch\" , peer -> host , lookup_msg ( attr_str , type , NULL ) ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return BGP_ATTR_PARSE_ERROR ; } if ( ( ret = bgp_attr_check ( peer , attr ) ) < 0 ) { if ( as4_path ) aspath_unintern ( & as4_path ) ; return ret ; } if ( CHECK_FLAG ( attr -> flag , ATTR_FLAG_BIT ( BGP_ATTR_AS_PATH ) ) && bgp_attr_munge_as4_attrs ( peer , attr , as4_path , as4_aggregator , & as4_aggregator_addr ) ) { bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_MAL_ATTR ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return BGP_ATTR_PARSE_ERROR ; } if ( as4_path ) { aspath_unintern ( & as4_path ) ; } if ( attr -> flag & ( ATTR_FLAG_BIT ( BGP_ATTR_AS_PATH ) ) ) { ret = bgp_attr_aspath_check ( peer , attr ) ; if ( ret != BGP_ATTR_PARSE_PROCEED ) return ret ; } if ( attr -> transit ) attr -> transit = transit_intern ( attr -> transit ) ; if ( attr -> encap_subtlvs ) attr -> encap_subtlvs = encap_intern ( attr -> encap_subtlvs , ENCAP_SUBTLV_TYPE ) ; # if ENABLE_BGP_VNC if ( attr -> vnc_subtlvs ) attr -> vnc_subtlvs = encap_intern ( attr -> vnc_subtlvs , VNC_SUBTLV_TYPE ) ; # endif return BGP_ATTR_PARSE_PROCEED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # if ENABLE_BGP_VNC_ATTR <S2SV_ModEnd> case BGP_ATTR_VNC :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000083\n\n```\nCWE-000 static gboolean comics_check_decompress_command ( gchar * mime_type , ComicsDocument * comics_document , GError * * error ) { gboolean success ; gchar * std_out , * std_err ; gint retval ; GError * err = NULL ; if ( g_content_type_is_a ( mime_type , \"application/x-cbr\" ) || g_content_type_is_a ( mime_type , \"application/x-rar\" ) ) { comics_document -> selected_command = g_find_program_in_path ( \"unrar\" ) ; if ( comics_document -> selected_command ) { success = g_spawn_command_line_sync ( comics_document -> selected_command , & std_out , & std_err , & retval , & err ) ; if ( ! success ) { g_propagate_error ( error , err ) ; g_error_free ( err ) ; return FALSE ; } else if ( WIFEXITED ( retval ) ) { if ( g_strrstr ( std_out , \"freeware\" ) != NULL ) comics_document -> command_usage = RARLABS ; else comics_document -> command_usage = GNAUNRAR ; g_free ( std_out ) ; g_free ( std_err ) ; return TRUE ; } } comics_document -> selected_command = g_find_program_in_path ( \"unrar-free\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = GNAUNRAR ; return TRUE ; } <S2SV_StartBug> comics_document -> selected_command = <S2SV_EndBug> g_find_program_in_path ( \"bsdtar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } } else if ( g_content_type_is_a ( mime_type , \"application/x-cbz\" ) || g_content_type_is_a ( mime_type , \"application/zip\" ) ) { comics_document -> selected_command = g_find_program_in_path ( \"unzip\" ) ; comics_document -> alternative_command = g_find_program_in_path ( \"zipnote\" ) ; if ( comics_document -> selected_command && comics_document -> alternative_command ) { comics_document -> command_usage = UNZIP ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"7za\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"7z\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } <S2SV_StartBug> comics_document -> selected_command = <S2SV_EndBug> g_find_program_in_path ( \"bsdtar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } } else if ( g_content_type_is_a ( mime_type , \"application/x-cb7\" ) || g_content_type_is_a ( mime_type , \"application/x-7z-compressed\" ) ) { comics_document -> selected_command = g_find_program_in_path ( \"7zr\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"7za\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"7z\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = P7ZIP ; return TRUE ; } <S2SV_StartBug> comics_document -> selected_command = <S2SV_EndBug> g_find_program_in_path ( \"bsdtar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } } else if ( g_content_type_is_a ( mime_type , \"application/x-cbt\" ) || g_content_type_is_a ( mime_type , \"application/x-tar\" ) ) { comics_document -> selected_command = g_find_program_in_path ( \"tar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } comics_document -> selected_command = g_find_program_in_path ( \"bsdtar\" ) ; if ( comics_document -> selected_command ) { comics_document -> command_usage = TAR ; return TRUE ; } } else { g_set_error ( error , EV_DOCUMENT_ERROR , EV_DOCUMENT_ERROR_INVALID , _ ( \"Not<S2SV_blank>a<S2SV_blank>comic<S2SV_blank>book<S2SV_blank>MIME<S2SV_blank>type:<S2SV_blank>%s\" ) , mime_type ) ; return FALSE ; } g_set_error_literal ( error , EV_DOCUMENT_ERROR , EV_DOCUMENT_ERROR_INVALID , _ ( \"Can’t<S2SV_blank>find<S2SV_blank>an<S2SV_blank>appropriate<S2SV_blank>command<S2SV_blank>to<S2SV_blank>\" \"decompress<S2SV_blank>this<S2SV_blank>type<S2SV_blank>of<S2SV_blank>comic<S2SV_blank>book\" ) ) ; return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TRUE ; } <S2SV_ModEnd> } else if <S2SV_ModStart> TRUE ; } <S2SV_ModEnd> } else if <S2SV_ModStart> TRUE ; } } else <S2SV_ModEnd> { g_set_error (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13014\n\n```\nCWE-125 void wb_print ( netdissect_options * ndo , register const void * hdr , register u_int len ) { register const struct pkt_hdr * ph ; ph = ( const struct pkt_hdr * ) hdr ; if ( len < sizeof ( * ph ) || ! ND_TTEST ( * ph ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } len -= sizeof ( * ph ) ; if ( ph -> ph_flags ) ND_PRINT ( ( ndo , \"*\" ) ) ; switch ( ph -> ph_type ) { case PT_KILL : ND_PRINT ( ( ndo , \"<S2SV_blank>wb-kill\" ) ) ; return ; case PT_ID : if ( wb_id ( ndo , ( const struct pkt_id * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_RREQ : if ( wb_rreq ( ndo , ( const struct pkt_rreq * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_RREP : if ( wb_rrep ( ndo , ( const struct pkt_rrep * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_DRAWOP : if ( wb_drawop ( ndo , ( const struct pkt_dop * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_PREQ : if ( wb_preq ( ndo , ( const struct pkt_preq * ) ( ph + 1 ) , len ) >= 0 ) return ; <S2SV_StartBug> break ; <S2SV_EndBug> case PT_PREP : if ( wb_prep ( ndo , ( const struct pkt_prep * ) ( ph + 1 ) , len ) >= 0 ) <S2SV_StartBug> return ; <S2SV_EndBug> break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>wb-%d!\" , ph -> ph_type ) ) ; return ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; <S2SV_ModStart> 0 ) return ; ND_PRINT ( ( ndo , \"%s\" , tstr ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8070\n\n```\nCWE-119 static int catc_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct device * dev = & intf -> dev ; struct usb_device * usbdev = interface_to_usbdev ( intf ) ; struct net_device * netdev ; struct catc * catc ; u8 broadcast [ ETH_ALEN ] ; <S2SV_StartBug> int i , pktsz , ret ; <S2SV_EndBug> if ( usb_set_interface ( usbdev , intf -> altsetting -> desc . bInterfaceNumber , 1 ) ) { dev_err ( dev , \"Can\\'t<S2SV_blank>set<S2SV_blank>altsetting<S2SV_blank>1.\\\\n\" ) ; return - EIO ; } netdev = alloc_etherdev ( sizeof ( struct catc ) ) ; if ( ! netdev ) return - ENOMEM ; catc = netdev_priv ( netdev ) ; netdev -> netdev_ops = & catc_netdev_ops ; netdev -> watchdog_timeo = TX_TIMEOUT ; netdev -> ethtool_ops = & ops ; catc -> usbdev = usbdev ; catc -> netdev = netdev ; spin_lock_init ( & catc -> tx_lock ) ; spin_lock_init ( & catc -> ctrl_lock ) ; init_timer ( & catc -> timer ) ; catc -> timer . data = ( long ) catc ; catc -> timer . function = catc_stats_timer ; catc -> ctrl_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; catc -> tx_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; catc -> rx_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; catc -> irq_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ( ! catc -> ctrl_urb ) || ( ! catc -> tx_urb ) || ( ! catc -> rx_urb ) || ( ! catc -> irq_urb ) ) { dev_err ( & intf -> dev , \"No<S2SV_blank>free<S2SV_blank>urbs<S2SV_blank>available.\\\\n\" ) ; ret = - ENOMEM ; goto fail_free ; } if ( le16_to_cpu ( usbdev -> descriptor . idVendor ) == 0x0423 && le16_to_cpu ( usbdev -> descriptor . idProduct ) == 0xa && le16_to_cpu ( catc -> usbdev -> descriptor . bcdDevice ) == 0x0130 ) { dev_dbg ( dev , \"Testing<S2SV_blank>for<S2SV_blank>f5u011\\\\n\" ) ; catc -> is_f5u011 = 1 ; atomic_set ( & catc -> recq_sz , 0 ) ; pktsz = RX_PKT_SZ ; } else { pktsz = RX_MAX_BURST * ( PKT_SZ + 2 ) ; } usb_fill_control_urb ( catc -> ctrl_urb , usbdev , usb_sndctrlpipe ( usbdev , 0 ) , NULL , NULL , 0 , catc_ctrl_done , catc ) ; usb_fill_bulk_urb ( catc -> tx_urb , usbdev , usb_sndbulkpipe ( usbdev , 1 ) , NULL , 0 , catc_tx_done , catc ) ; usb_fill_bulk_urb ( catc -> rx_urb , usbdev , usb_rcvbulkpipe ( usbdev , 1 ) , catc -> rx_buf , pktsz , catc_rx_done , catc ) ; usb_fill_int_urb ( catc -> irq_urb , usbdev , usb_rcvintpipe ( usbdev , 2 ) , catc -> irq_buf , 2 , catc_irq_done , catc , 1 ) ; if ( ! catc -> is_f5u011 ) { <S2SV_StartBug> dev_dbg ( dev , \"Checking<S2SV_blank>memory<S2SV_blank>size\\\\n\" ) ; <S2SV_EndBug> <S2SV_StartBug> i = 0x12345678 ; <S2SV_EndBug> <S2SV_StartBug> catc_write_mem ( catc , 0x7a80 , & i , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> i = 0x87654321 ; <S2SV_EndBug> <S2SV_StartBug> catc_write_mem ( catc , 0xfa80 , & i , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> catc_read_mem ( catc , 0x7a80 , & i , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> switch ( i ) { <S2SV_EndBug> case 0x12345678 : catc_set_reg ( catc , TxBufCount , 8 ) ; catc_set_reg ( catc , RxBufCount , 32 ) ; dev_dbg ( dev , \"64k<S2SV_blank>Memory\\\\n\" ) ; break ; default : dev_warn ( & intf -> dev , \"Couldn\\'t<S2SV_blank>detect<S2SV_blank>memory<S2SV_blank>size,<S2SV_blank>assuming<S2SV_blank>32k\\\\n\" ) ; case 0x87654321 : catc_set_reg ( catc , TxBufCount , 4 ) ; catc_set_reg ( catc , RxBufCount , 16 ) ; dev_dbg ( dev , \"32k<S2SV_blank>Memory\\\\n\" ) ; break ; <S2SV_StartBug> } <S2SV_EndBug> dev_dbg ( dev , \"Getting<S2SV_blank>MAC<S2SV_blank>from<S2SV_blank>SEEROM.\\\\n\" ) ; catc_get_mac ( catc , netdev -> dev_addr ) ; dev_dbg ( dev , \"Setting<S2SV_blank>MAC<S2SV_blank>into<S2SV_blank>registers.\\\\n\" ) ; for ( i = 0 ; i < 6 ; i ++ ) catc_set_reg ( catc , StationAddr0 - i , netdev -> dev_addr [ i ] ) ; dev_dbg ( dev , \"Filling<S2SV_blank>the<S2SV_blank>multicast<S2SV_blank>list.\\\\n\" ) ; eth_broadcast_addr ( broadcast ) ; catc_multicast ( broadcast , catc -> multicast ) ; catc_multicast ( netdev -> dev_addr , catc -> multicast ) ; catc_write_mem ( catc , 0xfa80 , catc -> multicast , 64 ) ; dev_dbg ( dev , \"Clearing<S2SV_blank>error<S2SV_blank>counters.\\\\n\" ) ; for ( i = 0 ; i < 8 ; i ++ ) catc_set_reg ( catc , EthStats + i , 0 ) ; catc -> last_stats = jiffies ; dev_dbg ( dev , \"Enabling.\\\\n\" ) ; catc_set_reg ( catc , MaxBurst , RX_MAX_BURST ) ; catc_set_reg ( catc , OpModes , OpTxMerge | OpRxMerge | OpLenInclude | Op3MemWaits ) ; catc_set_reg ( catc , LEDCtrl , LEDLink ) ; catc_set_reg ( catc , RxUnit , RxEnable | RxPolarity | RxMultiCast ) ; } else { dev_dbg ( dev , \"Performing<S2SV_blank>reset\\\\n\" ) ; catc_reset ( catc ) ; catc_get_mac ( catc , netdev -> dev_addr ) ; dev_dbg ( dev , \"Setting<S2SV_blank>RX<S2SV_blank>Mode\\\\n\" ) ; catc -> rxmode [ 0 ] = RxEnable | RxPolarity | RxMultiCast ; catc -> rxmode [ 1 ] = 0 ; f5u011_rxmode ( catc , catc -> rxmode ) ; } dev_dbg ( dev , \"Init<S2SV_blank>done.\\\\n\" ) ; printk ( KERN_INFO \"%s:<S2SV_blank>%s<S2SV_blank>USB<S2SV_blank>Ethernet<S2SV_blank>at<S2SV_blank>usb-%s-%s,<S2SV_blank>%pM.\\\\n\" , netdev -> name , ( catc -> is_f5u011 ) ? \"Belkin<S2SV_blank>F5U011\" : \"CATC<S2SV_blank>EL1210A<S2SV_blank>NetMate\" , usbdev -> bus -> bus_name , usbdev -> devpath , netdev -> dev_addr ) ; usb_set_intfdata ( intf , catc ) ; SET_NETDEV_DEV ( netdev , & intf -> dev ) ; ret = register_netdev ( netdev ) ; if ( ret ) goto fail_clear_intfdata ; return 0 ; fail_clear_intfdata : usb_set_intfdata ( intf , NULL ) ; fail_free : usb_free_urb ( catc -> ctrl_urb ) ; usb_free_urb ( catc -> tx_urb ) ; usb_free_urb ( catc -> rx_urb ) ; usb_free_urb ( catc -> irq_urb ) ; free_netdev ( netdev ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ; int <S2SV_ModEnd> pktsz , ret <S2SV_ModStart> is_f5u011 ) { u32 * buf ; int i ; <S2SV_ModStart> \"Checking<S2SV_blank>memory<S2SV_blank>size\\\\n\" ) ; buf = kmalloc ( 4 , GFP_KERNEL ) ; if ( ! buf ) { ret = - ENOMEM ; goto fail_free ; } * buf <S2SV_ModEnd> = 0x12345678 ; <S2SV_ModStart> , 0x7a80 , buf <S2SV_ModEnd> , 4 ) <S2SV_ModStart> 4 ) ; * buf <S2SV_ModEnd> = 0x87654321 ; <S2SV_ModStart> , 0xfa80 , buf <S2SV_ModEnd> , 4 ) <S2SV_ModStart> , 0x7a80 , buf <S2SV_ModEnd> , 4 ) <S2SV_ModStart> ; switch ( * buf <S2SV_ModEnd> ) { case <S2SV_ModStart> break ; } kfree ( buf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6418\n\n```\nCWE-399 static int ceph_x_verify_authorizer_reply ( struct ceph_auth_client * ac , struct ceph_authorizer * a , size_t len ) { struct ceph_x_authorizer * au = ( void * ) a ; struct ceph_x_ticket_handler * th ; int ret = 0 ; struct ceph_x_authorize_reply reply ; <S2SV_StartBug> void * p = au -> reply_buf ; <S2SV_EndBug> void * end = p + sizeof ( au -> reply_buf ) ; th = get_ticket_handler ( ac , au -> service ) ; if ( IS_ERR ( th ) ) return PTR_ERR ( th ) ; <S2SV_StartBug> ret = ceph_x_decrypt ( & th -> session_key , & p , end , & reply , sizeof ( reply ) ) ; <S2SV_EndBug> if ( ret < 0 ) return ret ; if ( ret != sizeof ( reply ) ) return - EPERM ; if ( au -> nonce + 1 != le64_to_cpu ( reply . nonce_plus_one ) ) ret = - EPERM ; else ret = 0 ; dout ( \"verify_authorizer_reply<S2SV_blank>nonce<S2SV_blank>%llx<S2SV_blank>got<S2SV_blank>%llx<S2SV_blank>ret<S2SV_blank>%d\\\\n\" , au -> nonce , le64_to_cpu ( reply . nonce_plus_one ) , ret ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; void * preply = & reply ; void * <S2SV_ModStart> end , & preply <S2SV_ModEnd> , sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12985\n\n```\nCWE-125 void ip6_print ( netdissect_options * ndo , const u_char * bp , u_int length ) { register const struct ip6_hdr * ip6 ; register int advance ; u_int len ; const u_char * ipend ; register const u_char * cp ; register u_int payload_len ; int nh ; int fragmented = 0 ; u_int flow ; ip6 = ( const struct ip6_hdr * ) bp ; ND_TCHECK ( * ip6 ) ; if ( length < sizeof ( struct ip6_hdr ) ) { ND_PRINT ( ( ndo , \"truncated-ip6<S2SV_blank>%u\" , length ) ) ; return ; } if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"IP6<S2SV_blank>\" ) ) ; if ( IP6_VERSION ( ip6 ) != 6 ) { ND_PRINT ( ( ndo , \"version<S2SV_blank>error:<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>6\" , IP6_VERSION ( ip6 ) ) ) ; return ; } payload_len = EXTRACT_16BITS ( & ip6 -> ip6_plen ) ; len = payload_len + sizeof ( struct ip6_hdr ) ; if ( length < len ) ND_PRINT ( ( ndo , \"truncated-ip6<S2SV_blank>-<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>missing!\" , len - length ) ) ; if ( ndo -> ndo_vflag ) { flow = EXTRACT_32BITS ( & ip6 -> ip6_flow ) ; ND_PRINT ( ( ndo , \"(\" ) ) ; # if 0 if ( flow & 0x0f000000 ) ND_PRINT ( ( ndo , \"pri<S2SV_blank>0x%02x,<S2SV_blank>\" , ( flow & 0x0f000000 ) >> 24 ) ) ; if ( flow & 0x00ffffff ) ND_PRINT ( ( ndo , \"flowlabel<S2SV_blank>0x%06x,<S2SV_blank>\" , flow & 0x00ffffff ) ) ; # else if ( flow & 0x0ff00000 ) ND_PRINT ( ( ndo , \"class<S2SV_blank>0x%02x,<S2SV_blank>\" , ( flow & 0x0ff00000 ) >> 20 ) ) ; if ( flow & 0x000fffff ) ND_PRINT ( ( ndo , \"flowlabel<S2SV_blank>0x%05x,<S2SV_blank>\" , flow & 0x000fffff ) ) ; # endif ND_PRINT ( ( ndo , \"hlim<S2SV_blank>%u,<S2SV_blank>next-header<S2SV_blank>%s<S2SV_blank>(%u)<S2SV_blank>payload<S2SV_blank>length:<S2SV_blank>%u)<S2SV_blank>\" , ip6 -> ip6_hlim , tok2str ( ipproto_values , \"unknown\" , ip6 -> ip6_nxt ) , ip6 -> ip6_nxt , payload_len ) ) ; } ipend = bp + len ; if ( ipend < ndo -> ndo_snapend ) ndo -> ndo_snapend = ipend ; cp = ( const u_char * ) ip6 ; advance = sizeof ( struct ip6_hdr ) ; nh = ip6 -> ip6_nxt ; while ( cp < ndo -> ndo_snapend && advance > 0 ) { <S2SV_StartBug> cp += advance ; <S2SV_EndBug> len -= advance ; if ( cp == ( const u_char * ) ( ip6 + 1 ) && nh != IPPROTO_TCP && nh != IPPROTO_UDP && nh != IPPROTO_DCCP && nh != IPPROTO_SCTP ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) ) ) ; } switch ( nh ) { case IPPROTO_HOPOPTS : advance = hbhopt_print ( ndo , cp ) ; if ( advance < 0 ) return ; nh = * cp ; break ; case IPPROTO_DSTOPTS : advance = dstopt_print ( ndo , cp ) ; if ( advance < 0 ) return ; nh = * cp ; break ; case IPPROTO_FRAGMENT : advance = frag6_print ( ndo , cp , ( const u_char * ) ip6 ) ; if ( advance < 0 || ndo -> ndo_snapend <= cp + advance ) return ; nh = * cp ; fragmented = 1 ; break ; case IPPROTO_MOBILITY_OLD : case IPPROTO_MOBILITY : advance = mobility_print ( ndo , cp , ( const u_char * ) ip6 ) ; <S2SV_StartBug> nh = * cp ; <S2SV_EndBug> return ; case IPPROTO_ROUTING : <S2SV_StartBug> advance = rt6_print ( ndo , cp , ( const u_char * ) ip6 ) ; <S2SV_EndBug> <S2SV_StartBug> nh = * cp ; <S2SV_EndBug> break ; case IPPROTO_SCTP : sctp_print ( ndo , cp , ( const u_char * ) ip6 , len ) ; return ; case IPPROTO_DCCP : dccp_print ( ndo , cp , ( const u_char * ) ip6 , len ) ; return ; case IPPROTO_TCP : tcp_print ( ndo , cp , len , ( const u_char * ) ip6 , fragmented ) ; return ; case IPPROTO_UDP : udp_print ( ndo , cp , len , ( const u_char * ) ip6 , fragmented ) ; return ; case IPPROTO_ICMPV6 : icmp6_print ( ndo , cp , len , ( const u_char * ) ip6 , fragmented ) ; return ; case IPPROTO_AH : <S2SV_StartBug> advance = ah_print ( ndo , cp ) ; <S2SV_EndBug> nh = * cp ; break ; case IPPROTO_ESP : { int enh , padlen ; advance = esp_print ( ndo , cp , len , ( const u_char * ) ip6 , & enh , & padlen ) ; <S2SV_StartBug> nh = enh & 0xff ; <S2SV_EndBug> len -= padlen ; break ; } case IPPROTO_IPCOMP : { ipcomp_print ( ndo , cp ) ; advance = - 1 ; break ; } case IPPROTO_PIM : pim_print ( ndo , cp , len , ( const u_char * ) ip6 ) ; return ; case IPPROTO_OSPF : ospf6_print ( ndo , cp , len ) ; return ; case IPPROTO_IPV6 : ip6_print ( ndo , cp , len ) ; return ; case IPPROTO_IPV4 : ip_print ( ndo , cp , len ) ; return ; case IPPROTO_PGM : pgm_print ( ndo , cp , len , ( const u_char * ) ip6 ) ; return ; case IPPROTO_GRE : gre_print ( ndo , cp , len ) ; return ; case IPPROTO_RSVP : rsvp_print ( ndo , cp , len ) ; return ; case IPPROTO_NONE : ND_PRINT ( ( ndo , \"no<S2SV_blank>next<S2SV_blank>header\" ) ) ; return ; default : ND_PRINT ( ( ndo , \"ip-proto-%d<S2SV_blank>%d\" , nh , len ) ) ; return ; } } return ; trunc : ND_PRINT ( ( ndo , \"[|ip6]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( len < ( u_int ) advance ) goto trunc ; <S2SV_ModStart> ip6 ) ; if ( advance < 0 ) return ; <S2SV_ModStart> case IPPROTO_ROUTING : ND_TCHECK ( * cp ) ; <S2SV_ModStart> ip6 ) ; if ( advance < 0 ) return ; <S2SV_ModStart> , cp ) ; if ( advance < 0 ) return <S2SV_ModStart> padlen ) ; if ( advance < 0 ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8896\n\n```\nCWE-189 Image * AutoResizeImage ( const Image * image , const char * option , MagickOffsetType * count , ExceptionInfo * exception ) { # define MAX_SIZES 16 char * q ; const char * p ; Image * resized , * images ; register ssize_t i ; size_t sizes [ MAX_SIZES ] = { 256 , 192 , 128 , 96 , 64 , 48 , 40 , 32 , 24 , 16 } ; images = NULL ; * count = 0 ; i = 0 ; p = option ; while ( * p != '\\\\0' && i < MAX_SIZES ) { size_t size ; while ( ( isspace ( ( int ) ( ( unsigned char ) * p ) ) != 0 ) ) p ++ ; size = ( size_t ) strtol ( p , & q , 10 ) ; <S2SV_StartBug> if ( p == q || size < 16 || size > 256 ) <S2SV_EndBug> return ( ( Image * ) NULL ) ; p = q ; sizes [ i ++ ] = size ; while ( ( isspace ( ( int ) ( ( unsigned char ) * p ) ) != 0 ) || ( * p == ',' ) ) p ++ ; } if ( i == 0 ) i = 10 ; * count = i ; for ( i = 0 ; i < * count ; i ++ ) { resized = ResizeImage ( image , sizes [ i ] , sizes [ i ] , image -> filter , exception ) ; if ( resized == ( Image * ) NULL ) return ( DestroyImageList ( images ) ) ; if ( images == ( Image * ) NULL ) images = resized ; else AppendImageToList ( & images , resized ) ; } return ( images ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( <S2SV_ModStart> p == q ) || ( <S2SV_ModEnd> size < 16 <S2SV_ModStart> size < 16 ) || ( <S2SV_ModEnd> size > 256 <S2SV_ModStart> size > 256 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12991\n\n```\nCWE-125 static int bgp_attr_print ( netdissect_options * ndo , u_int atype , const u_char * pptr , u_int len ) { int i ; uint16_t af ; uint8_t safi , snpa , nhlen ; union { float f ; uint32_t i ; } bw ; int advance ; u_int tlen ; const u_char * tptr ; char buf [ MAXHOSTNAMELEN + 100 ] ; int as_size ; tptr = pptr ; tlen = len ; switch ( atype ) { case BGPTYPE_ORIGIN : if ( len != 1 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK ( * tptr ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_origin_values , \"Unknown<S2SV_blank>Origin<S2SV_blank>Typecode\" , tptr [ 0 ] ) ) ) ; } break ; case BGPTYPE_AS4_PATH : case BGPTYPE_AS_PATH : if ( len % 2 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } if ( ! len ) { ND_PRINT ( ( ndo , \"empty\" ) ) ; break ; } as_size = bgp_attr_get_as_size ( ndo , atype , pptr , len ) ; while ( tptr < pptr + len ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_open_values , <S2SV_StartBug> \"?\" , tptr [ 0 ] ) ) ) ; <S2SV_EndBug> for ( i = 0 ; i < tptr [ 1 ] * as_size ; i += as_size ) { ND_TCHECK2 ( tptr [ 2 + i ] , as_size ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , as_printf ( ndo , astostr , sizeof ( astostr ) , as_size == 2 ? EXTRACT_16BITS ( & tptr [ 2 + i ] ) : EXTRACT_32BITS ( & tptr [ 2 + i ] ) ) ) ) ; } ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_close_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; tptr += 2 + tptr [ 1 ] * as_size ; } break ; case BGPTYPE_NEXT_HOP : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; } break ; case BGPTYPE_MULTI_EXIT_DISC : case BGPTYPE_LOCAL_PREF : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( tptr ) ) ) ; } break ; case BGPTYPE_ATOMIC_AGGREGATE : if ( len != 0 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; case BGPTYPE_AGGREGATOR : if ( len != 6 && len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , len ) ; if ( len == 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_16BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 2 ) ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; } break ; case BGPTYPE_AGGREGATOR4 : if ( len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGPTYPE_COMMUNITIES : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint32_t comm ; ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; comm = EXTRACT_32BITS ( tptr ) ; switch ( comm ) { case BGP_COMMUNITY_NO_EXPORT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT\" ) ) ; break ; case BGP_COMMUNITY_NO_ADVERT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_ADVERTISE\" ) ) ; break ; case BGP_COMMUNITY_NO_EXPORT_SUBCONFED : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT_SUBCONFED\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%u:%u%s\" , ( comm >> 16 ) & 0xffff , comm & 0xffff , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; break ; } tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_ORIGINATOR_ID : if ( len != 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGPTYPE_CLUSTER_LIST : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s%s\" , ipaddr_string ( ndo , tptr ) , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_MP_REACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; goto done ; break ; } tptr += 3 ; ND_TCHECK ( tptr [ 0 ] ) ; nhlen = tptr [ 0 ] ; tlen = nhlen ; tptr ++ ; if ( tlen ) { int nnh = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>nexthop:<S2SV_blank>\" ) ) ; while ( tlen > 0 ) { if ( nnh ++ > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; } switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in_addr ) ; tptr += sizeof ( struct in_addr ) ; } break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : if ( tlen < ( int ) sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in6_addr ) ; tptr += sizeof ( struct in6_addr ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= ( sizeof ( struct in_addr ) ) ; tptr += ( sizeof ( struct in_addr ) ) ; } break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"%s\" , isonsap_string ( ndo , tptr , tlen ) ) ) ; tptr += tlen ; tlen = 0 ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < BGP_VPN_RD_LEN + 1 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , isonsap_string ( ndo , tptr + BGP_VPN_RD_LEN , tlen - BGP_VPN_RD_LEN ) ) ) ; if ( EXTRACT_32BITS ( tptr + BGP_VPN_RD_LEN ) == 0x47000601 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN + 4 ) ) ) ; else if ( EXTRACT_24BITS ( tptr + BGP_VPN_RD_LEN ) == 0x350000 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN + 3 ) ) ) ; tptr += tlen ; tlen = 0 ; } break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u/SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; tptr += tlen ; tlen = 0 ; goto done ; break ; } } } ND_PRINT ( ( ndo , \",<S2SV_blank>nh-length:<S2SV_blank>%u\" , nhlen ) ) ; tptr += tlen ; ND_TCHECK ( tptr [ 0 ] ) ; snpa = tptr [ 0 ] ; tptr ++ ; if ( snpa ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>SNPA\" , snpa ) ) ; for ( ; snpa > 0 ; snpa -- ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d<S2SV_blank>bytes\" , tptr [ 0 ] ) ) ; tptr += tptr [ 0 ] + 1 ; } } else { ND_PRINT ( ( ndo , \",<S2SV_blank>no<S2SV_blank>SNPA\" ) ) ; } while ( len - ( tptr - pptr ) > 0 ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : advance = decode_rt_routing_info ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * tptr , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } done : break ; case BGPTYPE_MP_UNREACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , BGP_MP_NLRI_MINSIZE ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; if ( len == BGP_MP_NLRI_MINSIZE ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>End-of-Rib<S2SV_blank>Marker<S2SV_blank>(empty<S2SV_blank>NLRI)\" ) ) ; tptr += 3 ; while ( len - ( tptr - pptr ) > 0 ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * ( tptr - 3 ) , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr - 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } break ; case BGPTYPE_EXTD_COMMUNITIES : if ( len % 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint16_t extd_comm ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; extd_comm = EXTRACT_16BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>Flags<S2SV_blank>[%s]\" , tok2str ( bgp_extd_comm_subtype_values , \"unknown<S2SV_blank>extd<S2SV_blank>community<S2SV_blank>typecode\" , extd_comm ) , extd_comm , bittok2str ( bgp_extd_comm_flag_values , \"none\" , extd_comm ) ) ) ; ND_TCHECK2 ( * ( tptr + 2 ) , 6 ) ; switch ( extd_comm ) { case BGP_EXT_COM_RT_0 : case BGP_EXT_COM_RO_0 : case BGP_EXT_COM_L2VPN_RT_0 : ND_PRINT ( ( ndo , \":<S2SV_blank>%u:%u<S2SV_blank>(=<S2SV_blank>%s)\" , EXTRACT_16BITS ( tptr + 2 ) , EXTRACT_32BITS ( tptr + 4 ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_RT_1 : case BGP_EXT_COM_RO_1 : case BGP_EXT_COM_L2VPN_RT_1 : case BGP_EXT_COM_VRF_RT_IMP : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , ipaddr_string ( ndo , tptr + 2 ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_RT_2 : case BGP_EXT_COM_RO_2 : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr + 2 ) ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_LINKBAND : bw . i = EXTRACT_32BITS ( tptr + 2 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case BGP_EXT_COM_VPN_ORIGIN : case BGP_EXT_COM_VPN_ORIGIN2 : case BGP_EXT_COM_VPN_ORIGIN3 : case BGP_EXT_COM_VPN_ORIGIN4 : case BGP_EXT_COM_OSPF_RID : case BGP_EXT_COM_OSPF_RID2 : ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr + 2 ) ) ) ; break ; case BGP_EXT_COM_OSPF_RTYPE : case BGP_EXT_COM_OSPF_RTYPE2 : ND_PRINT ( ( ndo , \":<S2SV_blank>area:%s,<S2SV_blank>router-type:%s,<S2SV_blank>metric-type:%s%s\" , ipaddr_string ( ndo , tptr + 2 ) , tok2str ( bgp_extd_comm_ospf_rtype_values , \"unknown<S2SV_blank>(0x%02x)\" , * ( tptr + 6 ) ) , ( * ( tptr + 7 ) & BGP_OSPF_RTYPE_METRIC_TYPE ) ? \"E2\" : \"\" , ( ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_EXT ) || ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_NSSA ) ) ? \"E1\" : \"\" ) ) ; break ; case BGP_EXT_COM_L2INFO : ND_PRINT ( ( ndo , \":<S2SV_blank>%s<S2SV_blank>Control<S2SV_blank>Flags<S2SV_blank>[0x%02x]:MTU<S2SV_blank>%u\" , tok2str ( l2vpn_encaps_values , \"unknown<S2SV_blank>encaps\" , * ( tptr + 2 ) ) , * ( tptr + 3 ) , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_SOURCE_AS : ND_PRINT ( ( ndo , \":<S2SV_blank>AS<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 2 ) ) ) ; break ; default : ND_TCHECK2 ( * tptr , 8 ) ; print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , 8 ) ; break ; } tlen -= 8 ; tptr += 8 ; } break ; case BGPTYPE_PMSI_TUNNEL : { uint8_t tunnel_type , flags ; tunnel_type = * ( tptr + 1 ) ; flags = * tptr ; tlen = len ; ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>MPLS<S2SV_blank>Label<S2SV_blank>%u\" , tok2str ( bgp_pmsi_tunnel_values , \"Unknown\" , tunnel_type ) , tunnel_type , bittok2str ( bgp_pmsi_flag_values , \"none\" , flags ) , EXTRACT_24BITS ( tptr + 2 ) >> 4 ) ) ; tptr += 5 ; tlen -= 5 ; switch ( tunnel_type ) { case BGP_PMSI_TUNNEL_PIM_SM : case BGP_PMSI_TUNNEL_PIM_BIDIR : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sender<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_PIM_SSM : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_INGRESS : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-Endpoint<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGP_PMSI_TUNNEL_LDP_P2MP : case BGP_PMSI_TUNNEL_LDP_MP2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>LSP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_RSVP_P2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended-Tunnel-ID<S2SV_blank>%s,<S2SV_blank>P2MP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; } } break ; } case BGPTYPE_AIGP : { uint8_t type ; uint16_t length ; ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; tlen = len ; while ( tlen >= 3 ) { type = * tptr ; length = EXTRACT_16BITS ( tptr + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( bgp_aigp_values , \"Unknown\" , type ) , type , length ) ) ; ND_TCHECK2 ( tptr [ 3 ] , length - 3 ) ; switch ( type ) { case BGP_AIGP_TLV : ND_TCHECK2 ( tptr [ 3 ] , 8 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>metric<S2SV_blank>%\" PRIu64 , EXTRACT_64BITS ( tptr + 3 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr + 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length - 3 ) ; } } tptr += length ; tlen -= length ; } break ; } case BGPTYPE_ATTR_SET : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Origin<S2SV_blank>AS:<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) ) ) ; tptr += 4 ; len -= 4 ; while ( len ) { u_int aflags , alenlen , alen ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; if ( len < 2 ) goto trunc ; aflags = * tptr ; atype = * ( tptr + 1 ) ; tptr += 2 ; len -= 2 ; alenlen = bgp_attr_lenlen ( aflags , tptr ) ; ND_TCHECK2 ( tptr [ 0 ] , alenlen ) ; if ( len < alenlen ) goto trunc ; alen = bgp_attr_len ( aflags , tptr ) ; tptr += alenlen ; len -= alenlen ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_attr_values , \"Unknown<S2SV_blank>Attribute\" , atype ) , atype , alen ) ) ; if ( aflags ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s%s%s%s\" , aflags & 0x80 ? \"O\" : \"\" , aflags & 0x40 ? \"T\" : \"\" , aflags & 0x20 ? \"P\" : \"\" , aflags & 0x10 ? \"E\" : \"\" ) ) ; if ( aflags & 0xf ) ND_PRINT ( ( ndo , \"+%x\" , aflags & 0xf ) ) ; ND_PRINT ( ( ndo , \"]:<S2SV_blank>\" ) ) ; } if ( ! bgp_attr_print ( ndo , atype , tptr , alen ) ) return 0 ; tptr += alen ; len -= alen ; } break ; case BGPTYPE_LARGE_COMMUNITY : if ( len == 0 || len % 12 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; while ( len > 0 ) { ND_TCHECK2 ( * tptr , 12 ) ; ND_PRINT ( ( ndo , \"%u:%u:%u%s\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , ( len > 12 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tptr += 12 ; len -= 12 ; } break ; default : ND_TCHECK2 ( * pptr , len ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>Attribute<S2SV_blank>%u<S2SV_blank>decoder\" , atype ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; break ; } if ( ndo -> ndo_vflag > 1 && len ) { ND_TCHECK2 ( * pptr , len ) ; print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; } return 1 ; trunc : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ) ) ; ND_TCHECK ( tptr [ 1 ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9560\n\n```\nCWE-119 static int jpc_dec_tileinit ( jpc_dec_t * dec , jpc_dec_tile_t * tile ) { jpc_dec_tcomp_t * tcomp ; int compno ; int rlvlno ; jpc_dec_rlvl_t * rlvl ; jpc_dec_band_t * band ; jpc_dec_prc_t * prc ; int bndno ; jpc_tsfb_band_t * bnd ; int bandno ; jpc_dec_ccp_t * ccp ; int prccnt ; jpc_dec_cblk_t * cblk ; int cblkcnt ; uint_fast32_t tlprcxstart ; uint_fast32_t tlprcystart ; uint_fast32_t brprcxend ; uint_fast32_t brprcyend ; uint_fast32_t tlcbgxstart ; uint_fast32_t tlcbgystart ; uint_fast32_t brcbgxend ; uint_fast32_t brcbgyend ; uint_fast32_t cbgxstart ; uint_fast32_t cbgystart ; uint_fast32_t cbgxend ; uint_fast32_t cbgyend ; uint_fast32_t tlcblkxstart ; uint_fast32_t tlcblkystart ; uint_fast32_t brcblkxend ; uint_fast32_t brcblkyend ; uint_fast32_t cblkxstart ; uint_fast32_t cblkystart ; uint_fast32_t cblkxend ; uint_fast32_t cblkyend ; uint_fast32_t tmpxstart ; uint_fast32_t tmpystart ; uint_fast32_t tmpxend ; uint_fast32_t tmpyend ; jpc_dec_cp_t * cp ; <S2SV_StartBug> jpc_tsfb_band_t bnds [ 64 ] ; <S2SV_EndBug> jpc_pchg_t * pchg ; int pchgno ; jpc_dec_cmpt_t * cmpt ; cp = tile -> cp ; tile -> realmode = 0 ; if ( cp -> mctid == JPC_MCT_ICT ) { tile -> realmode = 1 ; } for ( compno = 0 , tcomp = tile -> tcomps , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ tcomp , ++ cmpt ) { ccp = & tile -> cp -> ccps [ compno ] ; if ( ccp -> qmfbid == JPC_COX_INS ) { tile -> realmode = 1 ; } tcomp -> numrlvls = ccp -> numrlvls ; if ( ! ( tcomp -> rlvls = jas_alloc2 ( tcomp -> numrlvls , sizeof ( jpc_dec_rlvl_t ) ) ) ) { return - 1 ; } if ( ! ( tcomp -> data = jas_seq2d_create ( JPC_CEILDIV ( tile -> xstart , cmpt -> hstep ) , JPC_CEILDIV ( tile -> ystart , cmpt -> vstep ) , JPC_CEILDIV ( tile -> xend , cmpt -> hstep ) , JPC_CEILDIV ( tile -> yend , cmpt -> vstep ) ) ) ) { return - 1 ; } if ( ! ( tcomp -> tsfb = jpc_cod_gettsfb ( ccp -> qmfbid , tcomp -> numrlvls - 1 ) ) ) { return - 1 ; } { jpc_tsfb_getbands ( tcomp -> tsfb , jas_seq2d_xstart ( tcomp -> data ) , jas_seq2d_ystart ( tcomp -> data ) , jas_seq2d_xend ( tcomp -> data ) , jas_seq2d_yend ( tcomp -> data ) , bnds ) ; } for ( rlvlno = 0 , rlvl = tcomp -> rlvls ; rlvlno < tcomp -> numrlvls ; ++ rlvlno , ++ rlvl ) { rlvl -> bands = 0 ; rlvl -> xstart = JPC_CEILDIVPOW2 ( tcomp -> xstart , tcomp -> numrlvls - 1 - rlvlno ) ; rlvl -> ystart = JPC_CEILDIVPOW2 ( tcomp -> ystart , tcomp -> numrlvls - 1 - rlvlno ) ; rlvl -> xend = JPC_CEILDIVPOW2 ( tcomp -> xend , tcomp -> numrlvls - 1 - rlvlno ) ; rlvl -> yend = JPC_CEILDIVPOW2 ( tcomp -> yend , tcomp -> numrlvls - 1 - rlvlno ) ; rlvl -> prcwidthexpn = ccp -> prcwidthexpns [ rlvlno ] ; rlvl -> prcheightexpn = ccp -> prcheightexpns [ rlvlno ] ; tlprcxstart = JPC_FLOORDIVPOW2 ( rlvl -> xstart , rlvl -> prcwidthexpn ) << rlvl -> prcwidthexpn ; tlprcystart = JPC_FLOORDIVPOW2 ( rlvl -> ystart , rlvl -> prcheightexpn ) << rlvl -> prcheightexpn ; brprcxend = JPC_CEILDIVPOW2 ( rlvl -> xend , rlvl -> prcwidthexpn ) << rlvl -> prcwidthexpn ; brprcyend = JPC_CEILDIVPOW2 ( rlvl -> yend , rlvl -> prcheightexpn ) << rlvl -> prcheightexpn ; rlvl -> numhprcs = ( brprcxend - tlprcxstart ) >> rlvl -> prcwidthexpn ; rlvl -> numvprcs = ( brprcyend - tlprcystart ) >> rlvl -> prcheightexpn ; rlvl -> numprcs = rlvl -> numhprcs * rlvl -> numvprcs ; if ( rlvl -> xstart >= rlvl -> xend || rlvl -> ystart >= rlvl -> yend ) { rlvl -> bands = 0 ; rlvl -> numprcs = 0 ; rlvl -> numhprcs = 0 ; rlvl -> numvprcs = 0 ; continue ; } if ( ! rlvlno ) { tlcbgxstart = tlprcxstart ; tlcbgystart = tlprcystart ; brcbgxend = brprcxend ; brcbgyend = brprcyend ; rlvl -> cbgwidthexpn = rlvl -> prcwidthexpn ; rlvl -> cbgheightexpn = rlvl -> prcheightexpn ; } else { tlcbgxstart = JPC_CEILDIVPOW2 ( tlprcxstart , 1 ) ; tlcbgystart = JPC_CEILDIVPOW2 ( tlprcystart , 1 ) ; brcbgxend = JPC_CEILDIVPOW2 ( brprcxend , 1 ) ; brcbgyend = JPC_CEILDIVPOW2 ( brprcyend , 1 ) ; rlvl -> cbgwidthexpn = rlvl -> prcwidthexpn - 1 ; rlvl -> cbgheightexpn = rlvl -> prcheightexpn - 1 ; } rlvl -> cblkwidthexpn = JAS_MIN ( ccp -> cblkwidthexpn , rlvl -> cbgwidthexpn ) ; rlvl -> cblkheightexpn = JAS_MIN ( ccp -> cblkheightexpn , rlvl -> cbgheightexpn ) ; rlvl -> numbands = ( ! rlvlno ) ? 1 : 3 ; if ( ! ( rlvl -> bands = jas_alloc2 ( rlvl -> numbands , sizeof ( jpc_dec_band_t ) ) ) ) { return - 1 ; } for ( bandno = 0 , band = rlvl -> bands ; bandno < rlvl -> numbands ; ++ bandno , ++ band ) { bndno = ( ! rlvlno ) ? 0 : ( 3 * ( rlvlno - 1 ) + bandno + 1 ) ; bnd = & bnds [ bndno ] ; band -> orient = bnd -> orient ; band -> stepsize = ccp -> stepsizes [ bndno ] ; band -> analgain = JPC_NOMINALGAIN ( ccp -> qmfbid , tcomp -> numrlvls - 1 , rlvlno , band -> orient ) ; band -> absstepsize = jpc_calcabsstepsize ( band -> stepsize , cmpt -> prec + band -> analgain ) ; band -> numbps = ccp -> numguardbits + JPC_QCX_GETEXPN ( band -> stepsize ) - 1 ; band -> roishift = ( ccp -> roishift + band -> numbps >= JPC_PREC ) ? ( JPC_PREC - 1 - band -> numbps ) : ccp -> roishift ; band -> data = 0 ; band -> prcs = 0 ; if ( bnd -> xstart == bnd -> xend || bnd -> ystart == bnd -> yend ) { continue ; } if ( ! ( band -> data = jas_seq2d_create ( 0 , 0 , 0 , 0 ) ) ) { return - 1 ; } jas_seq2d_bindsub ( band -> data , tcomp -> data , bnd -> locxstart , bnd -> locystart , bnd -> locxend , bnd -> locyend ) ; jas_seq2d_setshift ( band -> data , bnd -> xstart , bnd -> ystart ) ; assert ( rlvl -> numprcs ) ; if ( ! ( band -> prcs = jas_alloc2 ( rlvl -> numprcs , sizeof ( jpc_dec_prc_t ) ) ) ) { return - 1 ; } cbgxstart = tlcbgxstart ; cbgystart = tlcbgystart ; for ( prccnt = rlvl -> numprcs , prc = band -> prcs ; prccnt > 0 ; -- prccnt , ++ prc ) { cbgxend = cbgxstart + ( 1 << rlvl -> cbgwidthexpn ) ; cbgyend = cbgystart + ( 1 << rlvl -> cbgheightexpn ) ; prc -> xstart = JAS_MAX ( cbgxstart , JAS_CAST ( uint_fast32_t , jas_seq2d_xstart ( band -> data ) ) ) ; prc -> ystart = JAS_MAX ( cbgystart , JAS_CAST ( uint_fast32_t , jas_seq2d_ystart ( band -> data ) ) ) ; prc -> xend = JAS_MIN ( cbgxend , JAS_CAST ( uint_fast32_t , jas_seq2d_xend ( band -> data ) ) ) ; prc -> yend = JAS_MIN ( cbgyend , JAS_CAST ( uint_fast32_t , jas_seq2d_yend ( band -> data ) ) ) ; if ( prc -> xend > prc -> xstart && prc -> yend > prc -> ystart ) { tlcblkxstart = JPC_FLOORDIVPOW2 ( prc -> xstart , rlvl -> cblkwidthexpn ) << rlvl -> cblkwidthexpn ; tlcblkystart = JPC_FLOORDIVPOW2 ( prc -> ystart , rlvl -> cblkheightexpn ) << rlvl -> cblkheightexpn ; brcblkxend = JPC_CEILDIVPOW2 ( prc -> xend , rlvl -> cblkwidthexpn ) << rlvl -> cblkwidthexpn ; brcblkyend = JPC_CEILDIVPOW2 ( prc -> yend , rlvl -> cblkheightexpn ) << rlvl -> cblkheightexpn ; prc -> numhcblks = ( brcblkxend - tlcblkxstart ) >> rlvl -> cblkwidthexpn ; prc -> numvcblks = ( brcblkyend - tlcblkystart ) >> rlvl -> cblkheightexpn ; prc -> numcblks = prc -> numhcblks * prc -> numvcblks ; assert ( prc -> numcblks > 0 ) ; if ( ! ( prc -> incltagtree = jpc_tagtree_create ( prc -> numhcblks , prc -> numvcblks ) ) ) { return - 1 ; } if ( ! ( prc -> numimsbstagtree = jpc_tagtree_create ( prc -> numhcblks , prc -> numvcblks ) ) ) { return - 1 ; } if ( ! ( prc -> cblks = jas_alloc2 ( prc -> numcblks , sizeof ( jpc_dec_cblk_t ) ) ) ) { return - 1 ; } cblkxstart = cbgxstart ; cblkystart = cbgystart ; for ( cblkcnt = prc -> numcblks , cblk = prc -> cblks ; cblkcnt > 0 ; ) { cblkxend = cblkxstart + ( 1 << rlvl -> cblkwidthexpn ) ; cblkyend = cblkystart + ( 1 << rlvl -> cblkheightexpn ) ; tmpxstart = JAS_MAX ( cblkxstart , prc -> xstart ) ; tmpystart = JAS_MAX ( cblkystart , prc -> ystart ) ; tmpxend = JAS_MIN ( cblkxend , prc -> xend ) ; tmpyend = JAS_MIN ( cblkyend , prc -> yend ) ; if ( tmpxend > tmpxstart && tmpyend > tmpystart ) { cblk -> firstpassno = - 1 ; cblk -> mqdec = 0 ; cblk -> nulldec = 0 ; cblk -> flags = 0 ; cblk -> numpasses = 0 ; cblk -> segs . head = 0 ; cblk -> segs . tail = 0 ; cblk -> curseg = 0 ; cblk -> numimsbs = 0 ; cblk -> numlenbits = 3 ; cblk -> flags = 0 ; if ( ! ( cblk -> data = jas_seq2d_create ( 0 , 0 , 0 , 0 ) ) ) { return - 1 ; } jas_seq2d_bindsub ( cblk -> data , band -> data , tmpxstart , tmpystart , tmpxend , tmpyend ) ; ++ cblk ; -- cblkcnt ; } cblkxstart += 1 << rlvl -> cblkwidthexpn ; if ( cblkxstart >= cbgxend ) { cblkxstart = cbgxstart ; cblkystart += 1 << rlvl -> cblkheightexpn ; } } } else { prc -> cblks = 0 ; prc -> incltagtree = 0 ; prc -> numimsbstagtree = 0 ; } cbgxstart += 1 << rlvl -> cbgwidthexpn ; if ( cbgxstart >= brcbgxend ) { cbgxstart = tlcbgxstart ; cbgystart += 1 << rlvl -> cbgheightexpn ; } } } } } if ( ! ( tile -> pi = jpc_dec_pi_create ( dec , tile ) ) ) { return - 1 ; } for ( pchgno = 0 ; pchgno < jpc_pchglist_numpchgs ( tile -> cp -> pchglist ) ; ++ pchgno ) { pchg = jpc_pchg_copy ( jpc_pchglist_get ( tile -> cp -> pchglist , pchgno ) ) ; assert ( pchg ) ; jpc_pi_addpchg ( tile -> pi , pchg ) ; } jpc_pi_init ( tile -> pi ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> jpc_tsfb_band_t bnds [ JPC_MAXBANDS <S2SV_ModEnd> ] ; jpc_pchg_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18021\n\n```\nCWE-20 static int set_core_reg ( struct kvm_vcpu * vcpu , const struct kvm_one_reg * reg ) { __u32 __user * uaddr = ( __u32 __user * ) ( unsigned long ) reg -> addr ; struct kvm_regs * regs = vcpu_gp_regs ( vcpu ) ; int nr_regs = sizeof ( * regs ) / sizeof ( __u32 ) ; __uint128_t tmp ; void * valp = & tmp ; u64 off ; int err = 0 ; off = core_reg_offset_from_id ( reg -> id ) ; if ( off >= nr_regs || ( off + ( KVM_REG_SIZE ( reg -> id ) / sizeof ( __u32 ) ) ) >= nr_regs ) return - ENOENT ; <S2SV_StartBug> if ( KVM_REG_SIZE ( reg -> id ) > sizeof ( tmp ) ) <S2SV_EndBug> return - EINVAL ; if ( copy_from_user ( valp , uaddr , KVM_REG_SIZE ( reg -> id ) ) ) { err = - EFAULT ; goto out ; } if ( off == KVM_REG_ARM_CORE_REG ( regs . pstate ) ) { u32 mode = ( * ( u32 * ) valp ) & PSR_AA32_MODE_MASK ; switch ( mode ) { case PSR_AA32_MODE_USR : case PSR_AA32_MODE_FIQ : case PSR_AA32_MODE_IRQ : case PSR_AA32_MODE_SVC : case PSR_AA32_MODE_ABT : case PSR_AA32_MODE_UND : case PSR_MODE_EL0t : case PSR_MODE_EL1t : case PSR_MODE_EL1h : break ; default : err = - EINVAL ; goto out ; } } memcpy ( ( u32 * ) regs + off , valp , KVM_REG_SIZE ( reg -> id ) ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( validate_core_offset ( reg ) ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2545\n\n```\nCWE-362 void snd_timer_interrupt ( struct snd_timer * timer , unsigned long ticks_left ) { struct snd_timer_instance * ti , * ts , * tmp ; unsigned long resolution , ticks ; struct list_head * p , * ack_list_head ; unsigned long flags ; int use_tasklet = 0 ; if ( timer == NULL ) return ; spin_lock_irqsave ( & timer -> lock , flags ) ; if ( timer -> hw . c_resolution ) resolution = timer -> hw . c_resolution ( timer ) ; else resolution = timer -> hw . resolution ; list_for_each_entry_safe ( ti , tmp , & timer -> active_list_head , active_list ) { if ( ! ( ti -> flags & SNDRV_TIMER_IFLG_RUNNING ) ) continue ; ti -> pticks += ticks_left ; ti -> resolution = resolution ; if ( ti -> cticks < ticks_left ) ti -> cticks = 0 ; else ti -> cticks -= ticks_left ; if ( ti -> cticks ) continue ; if ( ti -> flags & SNDRV_TIMER_IFLG_AUTO ) { ti -> cticks = ti -> ticks ; } else { ti -> flags &= ~ SNDRV_TIMER_IFLG_RUNNING ; if ( -- timer -> running ) <S2SV_StartBug> list_del ( & ti -> active_list ) ; <S2SV_EndBug> } if ( ( timer -> hw . flags & SNDRV_TIMER_HW_TASKLET ) || ( ti -> flags & SNDRV_TIMER_IFLG_FAST ) ) ack_list_head = & timer -> ack_list_head ; else ack_list_head = & timer -> sack_list_head ; if ( list_empty ( & ti -> ack_list ) ) list_add_tail ( & ti -> ack_list , ack_list_head ) ; list_for_each_entry ( ts , & ti -> slave_active_head , active_list ) { ts -> pticks = ti -> pticks ; ts -> resolution = resolution ; if ( list_empty ( & ts -> ack_list ) ) list_add_tail ( & ts -> ack_list , ack_list_head ) ; } } if ( timer -> flags & SNDRV_TIMER_FLG_RESCHED ) snd_timer_reschedule ( timer , timer -> sticks ) ; if ( timer -> running ) { if ( timer -> hw . flags & SNDRV_TIMER_HW_STOP ) { timer -> hw . stop ( timer ) ; timer -> flags |= SNDRV_TIMER_FLG_CHANGE ; } if ( ! ( timer -> hw . flags & SNDRV_TIMER_HW_AUTO ) || ( timer -> flags & SNDRV_TIMER_FLG_CHANGE ) ) { timer -> flags &= ~ SNDRV_TIMER_FLG_CHANGE ; timer -> hw . start ( timer ) ; } } else { timer -> hw . stop ( timer ) ; } while ( ! list_empty ( & timer -> ack_list_head ) ) { p = timer -> ack_list_head . next ; ti = list_entry ( p , struct snd_timer_instance , ack_list ) ; list_del_init ( p ) ; ticks = ti -> pticks ; ti -> pticks = 0 ; ti -> flags |= SNDRV_TIMER_IFLG_CALLBACK ; spin_unlock ( & timer -> lock ) ; if ( ti -> callback ) ti -> callback ( ti , resolution , ticks ) ; spin_lock ( & timer -> lock ) ; ti -> flags &= ~ SNDRV_TIMER_IFLG_CALLBACK ; } use_tasklet = ! list_empty ( & timer -> sack_list_head ) ; spin_unlock_irqrestore ( & timer -> lock , flags ) ; if ( use_tasklet ) tasklet_schedule ( & timer -> task_queue ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> running ) list_del_init <S2SV_ModEnd> ( & ti\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 chrand_ret * chrand_principal3_2_svc ( chrand3_arg * arg , struct svc_req * rqstp ) { static chrand_ret ret ; krb5_keyblock * k ; int nkeys ; char * prime_arg , * funcname ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_chrand_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; funcname = \"kadm5_randkey_principal\" ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( cmp_gss_krb5_name ( handle , rqst2name ( rqstp ) , arg -> princ ) ) { ret . code = randkey_principal_wrapper_3 ( ( void * ) handle , arg -> princ , arg -> keepold , arg -> n_ks_tuple , arg -> ks_tuple , & k , & nkeys ) ; } else if ( ! ( CHANGEPW_SERVICE ( rqstp ) ) && kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_CHANGEPW , arg -> princ , NULL ) ) { ret . code = kadm5_randkey_principal_3 ( ( void * ) handle , arg -> princ , arg -> keepold , arg -> n_ks_tuple , arg -> ks_tuple , & k , & nkeys ) ; } else { log_unauth ( funcname , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_CHANGEPW ; } if ( ret . code == KADM5_OK ) { ret . keys = k ; ret . n_keys = nkeys ; } if ( ret . code != KADM5_AUTH_CHANGEPW ) { if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( funcname , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4978\n\n```\nCWE-59 void rs_filter_graph ( RSFilter * filter ) { <S2SV_StartBug> g_return_if_fail ( RS_IS_FILTER ( filter ) ) ; <S2SV_EndBug> GString * str = g_string_new ( \"digraph<S2SV_blank>G<S2SV_blank>{\\\\n\" ) ; rs_filter_graph_helper ( str , filter ) ; g_string_append_printf ( str , \"}\\\\n\" ) ; <S2SV_StartBug> g_file_set_contents ( \"/tmp/rs-filter-graph\" , str -> str , str -> len , NULL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( 0 != system ( \"dot<S2SV_blank>-Tpng<S2SV_blank>>/tmp/rs-filter-graph.png<S2SV_blank></tmp/rs-filter-graph\" ) ) <S2SV_EndBug> g_warning ( \"Calling<S2SV_blank>dot<S2SV_blank>failed\" ) ; <S2SV_StartBug> if ( 0 != system ( \"gnome-open<S2SV_blank>/tmp/rs-filter-graph.png\" ) ) <S2SV_EndBug> <S2SV_StartBug> g_warning ( \"Calling<S2SV_blank>gnome-open<S2SV_blank>failed.\" ) ; <S2SV_EndBug> g_string_free ( str , TRUE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filter ) ) ; gchar * dot_filename ; gchar * png_filename ; gchar * command_line <S2SV_ModStart> \"}\\\\n\" ) ; dot_filename = g_strdup_printf ( \"/tmp/rs-filter-graph.%u\" , g_random_int ( ) ) ; png_filename = g_strdup_printf ( \"%s.%u.png\" , dot_filename , g_random_int ( ) ) ; g_file_set_contents ( dot_filename <S2SV_ModEnd> , str -> <S2SV_ModStart> NULL ) ; command_line = g_strdup_printf ( \"dot<S2SV_blank>-Tpng<S2SV_blank>>%s<S2SV_blank><%s\" , png_filename , dot_filename ) ; <S2SV_ModStart> != system ( command_line <S2SV_ModEnd> ) ) g_warning <S2SV_ModStart> \"Calling<S2SV_blank>dot<S2SV_blank>failed\" ) ; g_free ( command_line ) ; command_line = g_strdup_printf ( \"gnome-open<S2SV_blank>%s\" , png_filename ) ; <S2SV_ModStart> != system ( command_line <S2SV_ModEnd> ) ) g_warning <S2SV_ModStart> g_warning ( \"Calling<S2SV_blank>gnome-open<S2SV_blank>failed.\" ) ; g_free ( command_line ) ; g_free ( dot_filename ) ; g_free ( png_filename\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5232\n\n```\nCWE-362 fm_mgr_config_errno_t fm_mgr_config_init ( OUT p_fm_config_conx_hdlt * p_hdl , IN int instance , OPTIONAL IN char * rem_address , OPTIONAL IN char * community ) { fm_config_conx_hdl * hdl ; fm_mgr_config_errno_t res = FM_CONF_OK ; if ( ( hdl = calloc ( 1 , sizeof ( fm_config_conx_hdl ) ) ) == NULL ) { res = FM_CONF_NO_MEM ; goto cleanup ; } hdl -> instance = instance ; * p_hdl = hdl ; if ( ! rem_address || ( strcmp ( rem_address , \"localhost\" ) == 0 ) ) { if ( fm_mgr_config_mgr_connect ( hdl , FM_MGR_SM ) == FM_CONF_INIT_ERR ) { res = FM_CONF_INIT_ERR ; goto cleanup ; } if ( fm_mgr_config_mgr_connect ( hdl , FM_MGR_PM ) == FM_CONF_INIT_ERR ) { res = FM_CONF_INIT_ERR ; goto cleanup ; } if ( fm_mgr_config_mgr_connect ( hdl , FM_MGR_FE ) == FM_CONF_INIT_ERR ) { res = FM_CONF_INIT_ERR ; goto cleanup ; } } <S2SV_StartBug> return res ; <S2SV_EndBug> cleanup : if ( hdl ) { free ( hdl ) ; hdl = NULL ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } cleanup : <S2SV_ModEnd> return res ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext2_fill_super ( struct super_block * sb , void * data , int silent ) { struct buffer_head * bh ; struct ext2_sb_info * sbi ; struct ext2_super_block * es ; struct inode * root ; unsigned long block ; unsigned long sb_block = get_sb_block ( & data ) ; unsigned long logic_sb_block ; unsigned long offset = 0 ; unsigned long def_mount_opts ; long ret = - EINVAL ; int blocksize = BLOCK_SIZE ; int db_count ; int i , j ; __le32 features ; int err ; err = - ENOMEM ; sbi = kzalloc ( sizeof ( * sbi ) , GFP_KERNEL ) ; if ( ! sbi ) goto failed ; sbi -> s_blockgroup_lock = kzalloc ( sizeof ( struct blockgroup_lock ) , GFP_KERNEL ) ; if ( ! sbi -> s_blockgroup_lock ) { kfree ( sbi ) ; goto failed ; } sb -> s_fs_info = sbi ; sbi -> s_sb_block = sb_block ; spin_lock_init ( & sbi -> s_lock ) ; blocksize = sb_min_blocksize ( sb , BLOCK_SIZE ) ; if ( ! blocksize ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>blocksize\" ) ; goto failed_sbi ; } if ( blocksize != BLOCK_SIZE ) { logic_sb_block = ( sb_block * BLOCK_SIZE ) / blocksize ; offset = ( sb_block * BLOCK_SIZE ) % blocksize ; } else { logic_sb_block = sb_block ; } if ( ! ( bh = sb_bread ( sb , logic_sb_block ) ) ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>superblock\" ) ; goto failed_sbi ; } es = ( struct ext2_super_block * ) ( ( ( char * ) bh -> b_data ) + offset ) ; sbi -> s_es = es ; sb -> s_magic = le16_to_cpu ( es -> s_magic ) ; if ( sb -> s_magic != EXT2_SUPER_MAGIC ) goto cantfind_ext2 ; def_mount_opts = le32_to_cpu ( es -> s_default_mount_opts ) ; if ( def_mount_opts & EXT2_DEFM_DEBUG ) set_opt ( sbi -> s_mount_opt , DEBUG ) ; if ( def_mount_opts & EXT2_DEFM_BSDGROUPS ) set_opt ( sbi -> s_mount_opt , GRPID ) ; if ( def_mount_opts & EXT2_DEFM_UID16 ) set_opt ( sbi -> s_mount_opt , NO_UID32 ) ; # ifdef CONFIG_EXT2_FS_XATTR if ( def_mount_opts & EXT2_DEFM_XATTR_USER ) set_opt ( sbi -> s_mount_opt , XATTR_USER ) ; # endif # ifdef CONFIG_EXT2_FS_POSIX_ACL if ( def_mount_opts & EXT2_DEFM_ACL ) set_opt ( sbi -> s_mount_opt , POSIX_ACL ) ; # endif if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT2_ERRORS_PANIC ) set_opt ( sbi -> s_mount_opt , ERRORS_PANIC ) ; else if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT2_ERRORS_CONTINUE ) set_opt ( sbi -> s_mount_opt , ERRORS_CONT ) ; else set_opt ( sbi -> s_mount_opt , ERRORS_RO ) ; sbi -> s_resuid = make_kuid ( & init_user_ns , le16_to_cpu ( es -> s_def_resuid ) ) ; sbi -> s_resgid = make_kgid ( & init_user_ns , le16_to_cpu ( es -> s_def_resgid ) ) ; set_opt ( sbi -> s_mount_opt , RESERVATION ) ; if ( ! parse_options ( ( char * ) data , sb ) ) goto failed_mount ; sb -> s_flags = ( sb -> s_flags & ~ MS_POSIXACL ) | ( ( EXT2_SB ( sb ) -> s_mount_opt & EXT2_MOUNT_POSIX_ACL ) ? MS_POSIXACL : 0 ) ; sb -> s_iflags |= SB_I_CGROUPWB ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT2_GOOD_OLD_REV && ( EXT2_HAS_COMPAT_FEATURE ( sb , ~ 0U ) || EXT2_HAS_RO_COMPAT_FEATURE ( sb , ~ 0U ) || EXT2_HAS_INCOMPAT_FEATURE ( sb , ~ 0U ) ) ) ext2_msg ( sb , KERN_WARNING , \"warning:<S2SV_blank>feature<S2SV_blank>flags<S2SV_blank>set<S2SV_blank>on<S2SV_blank>rev<S2SV_blank>0<S2SV_blank>fs,<S2SV_blank>\" \"running<S2SV_blank>e2fsck<S2SV_blank>is<S2SV_blank>recommended\" ) ; features = EXT2_HAS_INCOMPAT_FEATURE ( sb , ~ EXT2_FEATURE_INCOMPAT_SUPP ) ; if ( features ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>couldn\\'t<S2SV_blank>mount<S2SV_blank>because<S2SV_blank>of<S2SV_blank>\" \"unsupported<S2SV_blank>optional<S2SV_blank>features<S2SV_blank>(%x)\" , le32_to_cpu ( features ) ) ; goto failed_mount ; } if ( ! ( sb -> s_flags & MS_RDONLY ) && ( features = EXT2_HAS_RO_COMPAT_FEATURE ( sb , ~ EXT2_FEATURE_RO_COMPAT_SUPP ) ) ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>couldn\\'t<S2SV_blank>mount<S2SV_blank>RDWR<S2SV_blank>because<S2SV_blank>of<S2SV_blank>\" \"unsupported<S2SV_blank>optional<S2SV_blank>features<S2SV_blank>(%x)\" , le32_to_cpu ( features ) ) ; goto failed_mount ; } blocksize = BLOCK_SIZE << le32_to_cpu ( sbi -> s_es -> s_log_block_size ) ; if ( sbi -> s_mount_opt & EXT2_MOUNT_DAX ) { if ( blocksize != PAGE_SIZE ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>unsupported<S2SV_blank>blocksize<S2SV_blank>for<S2SV_blank>dax\" ) ; goto failed_mount ; } if ( ! sb -> s_bdev -> bd_disk -> fops -> direct_access ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>dax\" ) ; goto failed_mount ; } } if ( sb -> s_blocksize != blocksize ) { brelse ( bh ) ; if ( ! sb_set_blocksize ( sb , blocksize ) ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>bad<S2SV_blank>blocksize<S2SV_blank>%d\" , blocksize ) ; goto failed_sbi ; } logic_sb_block = ( sb_block * BLOCK_SIZE ) / blocksize ; offset = ( sb_block * BLOCK_SIZE ) % blocksize ; bh = sb_bread ( sb , logic_sb_block ) ; if ( ! bh ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>couldn\\'t<S2SV_blank>read\" \"superblock<S2SV_blank>on<S2SV_blank>2nd<S2SV_blank>try\" ) ; goto failed_sbi ; } es = ( struct ext2_super_block * ) ( ( ( char * ) bh -> b_data ) + offset ) ; sbi -> s_es = es ; if ( es -> s_magic != cpu_to_le16 ( EXT2_SUPER_MAGIC ) ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>magic<S2SV_blank>mismatch\" ) ; goto failed_mount ; } } sb -> s_maxbytes = ext2_max_size ( sb -> s_blocksize_bits ) ; sb -> s_max_links = EXT2_LINK_MAX ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT2_GOOD_OLD_REV ) { sbi -> s_inode_size = EXT2_GOOD_OLD_INODE_SIZE ; sbi -> s_first_ino = EXT2_GOOD_OLD_FIRST_INO ; } else { sbi -> s_inode_size = le16_to_cpu ( es -> s_inode_size ) ; sbi -> s_first_ino = le32_to_cpu ( es -> s_first_ino ) ; if ( ( sbi -> s_inode_size < EXT2_GOOD_OLD_INODE_SIZE ) || ! is_power_of_2 ( sbi -> s_inode_size ) || ( sbi -> s_inode_size > blocksize ) ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>unsupported<S2SV_blank>inode<S2SV_blank>size:<S2SV_blank>%d\" , sbi -> s_inode_size ) ; goto failed_mount ; } } sbi -> s_frag_size = EXT2_MIN_FRAG_SIZE << le32_to_cpu ( es -> s_log_frag_size ) ; if ( sbi -> s_frag_size == 0 ) goto cantfind_ext2 ; sbi -> s_frags_per_block = sb -> s_blocksize / sbi -> s_frag_size ; sbi -> s_blocks_per_group = le32_to_cpu ( es -> s_blocks_per_group ) ; sbi -> s_frags_per_group = le32_to_cpu ( es -> s_frags_per_group ) ; sbi -> s_inodes_per_group = le32_to_cpu ( es -> s_inodes_per_group ) ; if ( EXT2_INODE_SIZE ( sb ) == 0 ) goto cantfind_ext2 ; sbi -> s_inodes_per_block = sb -> s_blocksize / EXT2_INODE_SIZE ( sb ) ; if ( sbi -> s_inodes_per_block == 0 || sbi -> s_inodes_per_group == 0 ) goto cantfind_ext2 ; sbi -> s_itb_per_group = sbi -> s_inodes_per_group / sbi -> s_inodes_per_block ; sbi -> s_desc_per_block = sb -> s_blocksize / sizeof ( struct ext2_group_desc ) ; sbi -> s_sbh = bh ; sbi -> s_mount_state = le16_to_cpu ( es -> s_state ) ; sbi -> s_addr_per_block_bits = ilog2 ( EXT2_ADDR_PER_BLOCK ( sb ) ) ; sbi -> s_desc_per_block_bits = ilog2 ( EXT2_DESC_PER_BLOCK ( sb ) ) ; if ( sb -> s_magic != EXT2_SUPER_MAGIC ) goto cantfind_ext2 ; if ( sb -> s_blocksize != bh -> b_size ) { if ( ! silent ) ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>unsupported<S2SV_blank>blocksize\" ) ; goto failed_mount ; } if ( sb -> s_blocksize != sbi -> s_frag_size ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>fragsize<S2SV_blank>%lu<S2SV_blank>!=<S2SV_blank>blocksize<S2SV_blank>%lu\" \"(not<S2SV_blank>supported<S2SV_blank>yet)\" , sbi -> s_frag_size , sb -> s_blocksize ) ; goto failed_mount ; } if ( sbi -> s_blocks_per_group > sb -> s_blocksize * 8 ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>#blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_blocks_per_group ) ; goto failed_mount ; } if ( sbi -> s_frags_per_group > sb -> s_blocksize * 8 ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>#fragments<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_frags_per_group ) ; goto failed_mount ; } if ( sbi -> s_inodes_per_group > sb -> s_blocksize * 8 ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>#inodes<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_inodes_per_group ) ; goto failed_mount ; } if ( EXT2_BLOCKS_PER_GROUP ( sb ) == 0 ) goto cantfind_ext2 ; sbi -> s_groups_count = ( ( le32_to_cpu ( es -> s_blocks_count ) - le32_to_cpu ( es -> s_first_data_block ) - 1 ) / EXT2_BLOCKS_PER_GROUP ( sb ) ) + 1 ; db_count = ( sbi -> s_groups_count + EXT2_DESC_PER_BLOCK ( sb ) - 1 ) / EXT2_DESC_PER_BLOCK ( sb ) ; sbi -> s_group_desc = kmalloc ( db_count * sizeof ( struct buffer_head * ) , GFP_KERNEL ) ; if ( sbi -> s_group_desc == NULL ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>not<S2SV_blank>enough<S2SV_blank>memory\" ) ; goto failed_mount ; } bgl_lock_init ( sbi -> s_blockgroup_lock ) ; sbi -> s_debts = kcalloc ( sbi -> s_groups_count , sizeof ( * sbi -> s_debts ) , GFP_KERNEL ) ; if ( ! sbi -> s_debts ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>not<S2SV_blank>enough<S2SV_blank>memory\" ) ; goto failed_mount_group_desc ; } for ( i = 0 ; i < db_count ; i ++ ) { block = descriptor_loc ( sb , logic_sb_block , i ) ; sbi -> s_group_desc [ i ] = sb_bread ( sb , block ) ; if ( ! sbi -> s_group_desc [ i ] ) { for ( j = 0 ; j < i ; j ++ ) brelse ( sbi -> s_group_desc [ j ] ) ; ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>group<S2SV_blank>descriptors\" ) ; goto failed_mount_group_desc ; } } if ( ! ext2_check_descriptors ( sb ) ) { ext2_msg ( sb , KERN_ERR , \"group<S2SV_blank>descriptors<S2SV_blank>corrupted\" ) ; goto failed_mount2 ; } sbi -> s_gdb_count = db_count ; get_random_bytes ( & sbi -> s_next_generation , sizeof ( u32 ) ) ; spin_lock_init ( & sbi -> s_next_gen_lock ) ; spin_lock_init ( & sbi -> s_rsv_window_lock ) ; sbi -> s_rsv_window_root = RB_ROOT ; sbi -> s_rsv_window_head . rsv_start = EXT2_RESERVE_WINDOW_NOT_ALLOCATED ; sbi -> s_rsv_window_head . rsv_end = EXT2_RESERVE_WINDOW_NOT_ALLOCATED ; sbi -> s_rsv_window_head . rsv_alloc_hit = 0 ; sbi -> s_rsv_window_head . rsv_goal_size = 0 ; ext2_rsv_window_add ( sb , & sbi -> s_rsv_window_head ) ; err = percpu_counter_init ( & sbi -> s_freeblocks_counter , ext2_count_free_blocks ( sb ) , GFP_KERNEL ) ; if ( ! err ) { err = percpu_counter_init ( & sbi -> s_freeinodes_counter , ext2_count_free_inodes ( sb ) , GFP_KERNEL ) ; } if ( ! err ) { err = percpu_counter_init ( & sbi -> s_dirs_counter , ext2_count_dirs ( sb ) , GFP_KERNEL ) ; } if ( err ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>insufficient<S2SV_blank>memory\" ) ; goto failed_mount3 ; } <S2SV_StartBug> sb -> s_op = & ext2_sops ; <S2SV_EndBug> sb -> s_export_op = & ext2_export_ops ; sb -> s_xattr = ext2_xattr_handlers ; # ifdef CONFIG_QUOTA sb -> dq_op = & dquot_operations ; sb -> s_qcop = & dquot_quotactl_ops ; sb -> s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP ; # endif root = ext2_iget ( sb , EXT2_ROOT_INO ) ; if ( IS_ERR ( root ) ) { ret = PTR_ERR ( root ) ; goto failed_mount3 ; } if ( ! S_ISDIR ( root -> i_mode ) || ! root -> i_blocks || ! root -> i_size ) { iput ( root ) ; ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>corrupt<S2SV_blank>root<S2SV_blank>inode,<S2SV_blank>run<S2SV_blank>e2fsck\" ) ; goto failed_mount3 ; } sb -> s_root = d_make_root ( root ) ; if ( ! sb -> s_root ) { ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>get<S2SV_blank>root<S2SV_blank>inode<S2SV_blank>failed\" ) ; ret = - ENOMEM ; goto failed_mount3 ; } if ( EXT2_HAS_COMPAT_FEATURE ( sb , EXT3_FEATURE_COMPAT_HAS_JOURNAL ) ) ext2_msg ( sb , KERN_WARNING , \"warning:<S2SV_blank>mounting<S2SV_blank>ext3<S2SV_blank>filesystem<S2SV_blank>as<S2SV_blank>ext2\" ) ; if ( ext2_setup_super ( sb , es , sb -> s_flags & MS_RDONLY ) ) sb -> s_flags |= MS_RDONLY ; ext2_write_super ( sb ) ; return 0 ; cantfind_ext2 : if ( ! silent ) ext2_msg ( sb , KERN_ERR , \"error:<S2SV_blank>can\\'t<S2SV_blank>find<S2SV_blank>an<S2SV_blank>ext2<S2SV_blank>filesystem<S2SV_blank>on<S2SV_blank>dev<S2SV_blank>%s.\" , sb -> s_id ) ; goto failed_mount ; failed_mount3 : <S2SV_StartBug> percpu_counter_destroy ( & sbi -> s_freeblocks_counter ) ; <S2SV_EndBug> percpu_counter_destroy ( & sbi -> s_freeinodes_counter ) ; percpu_counter_destroy ( & sbi -> s_dirs_counter ) ; failed_mount2 : for ( i = 0 ; i < db_count ; i ++ ) brelse ( sbi -> s_group_desc [ i ] ) ; failed_mount_group_desc : kfree ( sbi -> s_group_desc ) ; kfree ( sbi -> s_debts ) ; failed_mount : brelse ( bh ) ; failed_sbi : sb -> s_fs_info = NULL ; kfree ( sbi -> s_blockgroup_lock ) ; kfree ( sbi ) ; failed : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> failed_mount3 ; } # ifdef CONFIG_EXT2_FS_XATTR sbi -> s_mb_cache = ext2_xattr_create_cache ( ) ; if ( ! sbi -> s_mb_cache ) { ext2_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>an<S2SV_blank>mb_cache\" ) ; goto failed_mount3 ; } # endif <S2SV_ModStart> ; failed_mount3 : if ( sbi -> s_mb_cache ) ext2_xattr_destroy_cache ( sbi -> s_mb_cache ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-362 static int userfaultfd_register ( struct userfaultfd_ctx * ctx , unsigned long arg ) { struct mm_struct * mm = ctx -> mm ; struct vm_area_struct * vma , * prev , * cur ; int ret ; struct uffdio_register uffdio_register ; struct uffdio_register __user * user_uffdio_register ; unsigned long vm_flags , new_flags ; bool found ; bool basic_ioctls ; unsigned long start , end , vma_end ; user_uffdio_register = ( struct uffdio_register __user * ) arg ; ret = - EFAULT ; if ( copy_from_user ( & uffdio_register , user_uffdio_register , sizeof ( uffdio_register ) - sizeof ( __u64 ) ) ) goto out ; ret = - EINVAL ; if ( ! uffdio_register . mode ) goto out ; if ( uffdio_register . mode & ~ ( UFFDIO_REGISTER_MODE_MISSING | UFFDIO_REGISTER_MODE_WP ) ) goto out ; vm_flags = 0 ; if ( uffdio_register . mode & UFFDIO_REGISTER_MODE_MISSING ) vm_flags |= VM_UFFD_MISSING ; if ( uffdio_register . mode & UFFDIO_REGISTER_MODE_WP ) { vm_flags |= VM_UFFD_WP ; ret = - EINVAL ; goto out ; } ret = validate_range ( mm , uffdio_register . range . start , uffdio_register . range . len ) ; if ( ret ) goto out ; start = uffdio_register . range . start ; end = start + uffdio_register . range . len ; ret = - ENOMEM ; if ( ! mmget_not_zero ( mm ) ) goto out ; <S2SV_StartBug> down_write ( & mm -> mmap_sem ) ; <S2SV_EndBug> vma = find_vma_prev ( mm , start , & prev ) ; if ( ! vma ) goto out_unlock ; ret = - EINVAL ; if ( vma -> vm_start >= end ) goto out_unlock ; if ( is_vm_hugetlb_page ( vma ) ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( vma ) ; if ( start & ( vma_hpagesize - 1 ) ) goto out_unlock ; } found = false ; basic_ioctls = false ; for ( cur = vma ; cur && cur -> vm_start < end ; cur = cur -> vm_next ) { cond_resched ( ) ; BUG_ON ( ! ! cur -> vm_userfaultfd_ctx . ctx ^ ! ! ( cur -> vm_flags & ( VM_UFFD_MISSING | VM_UFFD_WP ) ) ) ; ret = - EINVAL ; if ( ! vma_can_userfault ( cur ) ) goto out_unlock ; ret = - EPERM ; if ( unlikely ( ! ( cur -> vm_flags & VM_MAYWRITE ) ) ) goto out_unlock ; if ( is_vm_hugetlb_page ( cur ) && end <= cur -> vm_end && end > cur -> vm_start ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( cur ) ; ret = - EINVAL ; if ( end & ( vma_hpagesize - 1 ) ) goto out_unlock ; } ret = - EBUSY ; if ( cur -> vm_userfaultfd_ctx . ctx && cur -> vm_userfaultfd_ctx . ctx != ctx ) goto out_unlock ; if ( is_vm_hugetlb_page ( cur ) ) basic_ioctls = true ; found = true ; } BUG_ON ( ! found ) ; if ( vma -> vm_start < start ) prev = vma ; ret = 0 ; do { cond_resched ( ) ; BUG_ON ( ! vma_can_userfault ( vma ) ) ; BUG_ON ( vma -> vm_userfaultfd_ctx . ctx && vma -> vm_userfaultfd_ctx . ctx != ctx ) ; WARN_ON ( ! ( vma -> vm_flags & VM_MAYWRITE ) ) ; if ( vma -> vm_userfaultfd_ctx . ctx == ctx && ( vma -> vm_flags & vm_flags ) == vm_flags ) goto skip ; if ( vma -> vm_start > start ) start = vma -> vm_start ; vma_end = min ( end , vma -> vm_end ) ; new_flags = ( vma -> vm_flags & ~ vm_flags ) | vm_flags ; prev = vma_merge ( mm , prev , start , vma_end , new_flags , vma -> anon_vma , vma -> vm_file , vma -> vm_pgoff , vma_policy ( vma ) , ( ( struct vm_userfaultfd_ctx ) { ctx } ) ) ; if ( prev ) { vma = prev ; goto next ; } if ( vma -> vm_start < start ) { ret = split_vma ( mm , vma , start , 1 ) ; if ( ret ) break ; } if ( vma -> vm_end > end ) { ret = split_vma ( mm , vma , end , 0 ) ; if ( ret ) break ; } next : vma -> vm_flags = new_flags ; vma -> vm_userfaultfd_ctx . ctx = ctx ; skip : prev = vma ; start = vma -> vm_end ; vma = vma -> vm_next ; } while ( vma && vma -> vm_start < end ) ; out_unlock : up_write ( & mm -> mmap_sem ) ; mmput ( mm ) ; if ( ! ret ) { if ( put_user ( basic_ioctls ? UFFD_API_RANGE_IOCTLS_BASIC : UFFD_API_RANGE_IOCTLS , & user_uffdio_register -> ioctls ) ) ret = - EFAULT ; } out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mmap_sem ) ; if ( ! mmget_still_valid ( mm ) ) goto out_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1465\n\n```\nCWE-17 static int __mkroute_input ( struct sk_buff * skb , const struct fib_result * res , struct in_device * in_dev , __be32 daddr , __be32 saddr , u32 tos ) { struct fib_nh_exception * fnhe ; struct rtable * rth ; int err ; struct in_device * out_dev ; unsigned int flags = 0 ; bool do_cache ; u32 itag = 0 ; out_dev = __in_dev_get_rcu ( FIB_RES_DEV ( * res ) ) ; if ( out_dev == NULL ) { net_crit_ratelimited ( \"Bug<S2SV_blank>in<S2SV_blank>ip_route_input_slow().<S2SV_blank>Please<S2SV_blank>report.\\\\n\" ) ; return - EINVAL ; } err = fib_validate_source ( skb , saddr , daddr , tos , FIB_RES_OIF ( * res ) , in_dev -> dev , in_dev , & itag ) ; if ( err < 0 ) { ip_handle_martian_source ( in_dev -> dev , in_dev , skb , daddr , saddr ) ; goto cleanup ; } do_cache = res -> fi && ! itag ; if ( out_dev == in_dev && err && IN_DEV_TX_REDIRECTS ( out_dev ) && <S2SV_StartBug> ( IN_DEV_SHARED_MEDIA ( out_dev ) || <S2SV_EndBug> <S2SV_StartBug> inet_addr_onlink ( out_dev , saddr , FIB_RES_GW ( * res ) ) ) ) { <S2SV_EndBug> flags |= RTCF_DOREDIRECT ; do_cache = false ; } if ( skb -> protocol != htons ( ETH_P_IP ) ) { if ( out_dev == in_dev && IN_DEV_PROXY_ARP_PVLAN ( in_dev ) == 0 ) { err = - EINVAL ; goto cleanup ; } } fnhe = find_exception ( & FIB_RES_NH ( * res ) , daddr ) ; if ( do_cache ) { if ( fnhe != NULL ) rth = rcu_dereference ( fnhe -> fnhe_rth_input ) ; else rth = rcu_dereference ( FIB_RES_NH ( * res ) . nh_rth_input ) ; if ( rt_cache_valid ( rth ) ) { skb_dst_set_noref ( skb , & rth -> dst ) ; goto out ; } } rth = rt_dst_alloc ( out_dev -> dev , IN_DEV_CONF_GET ( in_dev , NOPOLICY ) , IN_DEV_CONF_GET ( out_dev , NOXFRM ) , do_cache ) ; if ( ! rth ) { err = - ENOBUFS ; goto cleanup ; } rth -> rt_genid = rt_genid_ipv4 ( dev_net ( rth -> dst . dev ) ) ; rth -> rt_flags = flags ; rth -> rt_type = res -> type ; rth -> rt_is_input = 1 ; rth -> rt_iif = 0 ; rth -> rt_pmtu = 0 ; rth -> rt_gateway = 0 ; rth -> rt_uses_gateway = 0 ; INIT_LIST_HEAD ( & rth -> rt_uncached ) ; RT_CACHE_STAT_INC ( in_slow_tot ) ; rth -> dst . input = ip_forward ; rth -> dst . output = ip_output ; rt_set_nexthop ( rth , daddr , res , fnhe , res -> fi , res -> type , itag ) ; skb_dst_set ( skb , & rth -> dst ) ; out : err = 0 ; cleanup : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_dev ) && skb -> protocol == htons ( ETH_P_IP ) && <S2SV_ModStart> ) ) ) IPCB ( skb ) -> flags |= IPSKB_DOREDIRECT ; <S2SV_ModEnd> if ( skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static int keyring_search_iterator ( const void * object , void * iterator_data ) { struct keyring_search_context * ctx = iterator_data ; const struct key * key = keyring_ptr_to_key ( object ) ; <S2SV_StartBug> unsigned long kflags = key -> flags ; <S2SV_EndBug> kenter ( \"{%d}\" , key -> serial ) ; if ( key -> type != ctx -> index_key . type ) { kleave ( \"<S2SV_blank>=<S2SV_blank>0<S2SV_blank>[!type]\" ) ; return 0 ; } if ( ctx -> flags & KEYRING_SEARCH_DO_STATE_CHECK ) { if ( kflags & ( ( 1 << KEY_FLAG_INVALIDATED ) | ( 1 << KEY_FLAG_REVOKED ) ) ) { ctx -> result = ERR_PTR ( - EKEYREVOKED ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[invrev]\" , ctx -> skipped_ret ) ; goto skipped ; } if ( key -> expiry && ctx -> now . tv_sec >= key -> expiry ) { if ( ! ( ctx -> flags & KEYRING_SEARCH_SKIP_EXPIRED ) ) ctx -> result = ERR_PTR ( - EKEYEXPIRED ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[expire]\" , ctx -> skipped_ret ) ; goto skipped ; } } if ( ! ctx -> match_data . cmp ( key , & ctx -> match_data ) ) { kleave ( \"<S2SV_blank>=<S2SV_blank>0<S2SV_blank>[!match]\" ) ; return 0 ; } if ( ! ( ctx -> flags & KEYRING_SEARCH_NO_CHECK_PERM ) && key_task_permission ( make_key_ref ( key , ctx -> possessed ) , ctx -> cred , KEY_NEED_SEARCH ) < 0 ) { ctx -> result = ERR_PTR ( - EACCES ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[!perm]\" , ctx -> skipped_ret ) ; goto skipped ; } if ( ctx -> flags & KEYRING_SEARCH_DO_STATE_CHECK ) { <S2SV_StartBug> if ( kflags & ( 1 << KEY_FLAG_NEGATIVE ) ) { <S2SV_EndBug> smp_rmb ( ) ; <S2SV_StartBug> ctx -> result = ERR_PTR ( key -> reject_error ) ; <S2SV_EndBug> kleave ( \"<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[neg]\" , ctx -> skipped_ret ) ; goto skipped ; } } ctx -> result = make_key_ref ( key , ctx -> possessed ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>1<S2SV_blank>[found]\" ) ; return 1 ; skipped : return ctx -> skipped_ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long kflags = READ_ONCE ( key -> flags ) ; short state = READ_ONCE ( key -> state ) <S2SV_ModEnd> ; kenter ( <S2SV_ModStart> { if ( state < 0 ) { <S2SV_ModEnd> ctx -> result <S2SV_ModStart> = ERR_PTR ( state <S2SV_ModEnd> ) ; kleave\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12460\n\n```\nCWE-476 av_cold void ff_idctdsp_init ( IDCTDSPContext * c , AVCodecContext * avctx ) { const unsigned high_bit_depth = avctx -> bits_per_raw_sample > 8 ; if ( avctx -> lowres == 1 ) { c -> idct_put = ff_jref_idct4_put ; c -> idct_add = ff_jref_idct4_add ; c -> idct = ff_j_rev_dct4 ; c -> perm_type = FF_IDCT_PERM_NONE ; } else if ( avctx -> lowres == 2 ) { c -> idct_put = ff_jref_idct2_put ; c -> idct_add = ff_jref_idct2_add ; c -> idct = ff_j_rev_dct2 ; c -> perm_type = FF_IDCT_PERM_NONE ; } else if ( avctx -> lowres == 3 ) { c -> idct_put = ff_jref_idct1_put ; c -> idct_add = ff_jref_idct1_add ; c -> idct = ff_j_rev_dct1 ; c -> perm_type = FF_IDCT_PERM_NONE ; } else { if ( avctx -> bits_per_raw_sample == 10 || avctx -> bits_per_raw_sample == 9 ) { <S2SV_StartBug> if ( avctx -> codec_id == AV_CODEC_ID_MPEG4 && avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) <S2SV_EndBug> c -> idct_put = ff_simple_idct_put_int32_10bit ; else { c -> idct_put = ff_simple_idct_put_int16_10bit ; c -> idct_add = ff_simple_idct_add_int16_10bit ; c -> idct = ff_simple_idct_int16_10bit ; } c -> perm_type = FF_IDCT_PERM_NONE ; } else if ( avctx -> bits_per_raw_sample == 12 ) { c -> idct_put = ff_simple_idct_put_int16_12bit ; c -> idct_add = ff_simple_idct_add_int16_12bit ; c -> idct = ff_simple_idct_int16_12bit ; c -> perm_type = FF_IDCT_PERM_NONE ; } else { if ( avctx -> idct_algo == FF_IDCT_INT ) { c -> idct_put = ff_jref_idct_put ; c -> idct_add = ff_jref_idct_add ; c -> idct = ff_j_rev_dct ; c -> perm_type = FF_IDCT_PERM_LIBMPEG2 ; # if CONFIG_FAANIDCT } else if ( avctx -> idct_algo == FF_IDCT_FAAN ) { c -> idct_put = ff_faanidct_put ; c -> idct_add = ff_faanidct_add ; c -> idct = ff_faanidct ; c -> perm_type = FF_IDCT_PERM_NONE ; # endif } else { c -> idct_put = ff_simple_idct_put_int16_8bit ; c -> idct_add = ff_simple_idct_add_int16_8bit ; c -> idct = ff_simple_idct_int16_8bit ; c -> perm_type = FF_IDCT_PERM_NONE ; } } } c -> put_pixels_clamped = ff_put_pixels_clamped_c ; c -> put_signed_pixels_clamped = put_signed_pixels_clamped_c ; c -> add_pixels_clamped = ff_add_pixels_clamped_c ; if ( CONFIG_MPEG4_DECODER && avctx -> idct_algo == FF_IDCT_XVID ) ff_xvid_idct_init ( c , avctx ) ; if ( ARCH_AARCH64 ) ff_idctdsp_init_aarch64 ( c , avctx , high_bit_depth ) ; if ( ARCH_ALPHA ) ff_idctdsp_init_alpha ( c , avctx , high_bit_depth ) ; if ( ARCH_ARM ) ff_idctdsp_init_arm ( c , avctx , high_bit_depth ) ; if ( ARCH_PPC ) ff_idctdsp_init_ppc ( c , avctx , high_bit_depth ) ; if ( ARCH_X86 ) ff_idctdsp_init_x86 ( c , avctx , high_bit_depth ) ; if ( ARCH_MIPS ) ff_idctdsp_init_mips ( c , avctx , high_bit_depth ) ; ff_init_scantable_permutation ( c -> idct_permutation , c -> perm_type ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( c -> mpeg4_studio_profile <S2SV_ModEnd> ) c ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14040\n\n```\nCWE-787 opj_image_t * tgatoimage ( const char * filename , opj_cparameters_t * parameters ) { FILE * f ; opj_image_t * image ; unsigned int image_width , image_height , pixel_bit_depth ; unsigned int x , y ; int flip_image = 0 ; opj_image_cmptparm_t cmptparm [ 4 ] ; int numcomps ; OPJ_COLOR_SPACE color_space ; OPJ_BOOL mono ; OPJ_BOOL save_alpha ; int subsampling_dx , subsampling_dy ; int i ; f = fopen ( filename , \"rb\" ) ; if ( ! f ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading<S2SV_blank>!!\\\\n\" , filename ) ; return 0 ; } if ( ! tga_readheader ( f , & pixel_bit_depth , & image_width , & image_height , & flip_image ) ) { fclose ( f ) ; return NULL ; } if ( ! ( ( pixel_bit_depth == 24 ) || ( pixel_bit_depth == 32 ) ) ) { fclose ( f ) ; return NULL ; } memset ( & cmptparm [ 0 ] , 0 , 4 * sizeof ( opj_image_cmptparm_t ) ) ; mono = ( pixel_bit_depth == 8 ) || ( pixel_bit_depth == 16 ) ; save_alpha = ( pixel_bit_depth == 16 ) || ( pixel_bit_depth == 32 ) ; if ( mono ) { color_space = OPJ_CLRSPC_GRAY ; numcomps = save_alpha ? 2 : 1 ; } else { numcomps = save_alpha ? 4 : 3 ; color_space = OPJ_CLRSPC_SRGB ; } <S2SV_StartBug> subsampling_dx = parameters -> subsampling_dx ; <S2SV_EndBug> subsampling_dy = parameters -> subsampling_dy ; for ( i = 0 ; i < numcomps ; i ++ ) { cmptparm [ i ] . prec = 8 ; cmptparm [ i ] . bpp = 8 ; cmptparm [ i ] . sgnd = 0 ; cmptparm [ i ] . dx = ( OPJ_UINT32 ) subsampling_dx ; cmptparm [ i ] . dy = ( OPJ_UINT32 ) subsampling_dy ; cmptparm [ i ] . w = image_width ; cmptparm [ i ] . h = image_height ; } image = opj_image_create ( ( OPJ_UINT32 ) numcomps , & cmptparm [ 0 ] , color_space ) ; if ( ! image ) { fclose ( f ) ; return NULL ; } image -> x0 = ( OPJ_UINT32 ) parameters -> image_offset_x0 ; image -> y0 = ( OPJ_UINT32 ) parameters -> image_offset_y0 ; image -> x1 = ! image -> x0 ? ( OPJ_UINT32 ) ( image_width - 1 ) * ( OPJ_UINT32 ) subsampling_dx + 1 : image -> x0 + ( OPJ_UINT32 ) ( image_width - 1 ) * ( OPJ_UINT32 ) subsampling_dx + 1 ; image -> y1 = ! image -> y0 ? ( OPJ_UINT32 ) ( image_height - 1 ) * ( OPJ_UINT32 ) subsampling_dy + 1 : image -> y0 + ( OPJ_UINT32 ) ( image_height - 1 ) * ( OPJ_UINT32 ) subsampling_dy + 1 ; for ( y = 0 ; y < image_height ; y ++ ) { int index ; if ( flip_image ) { index = ( int ) ( ( image_height - y - 1 ) * image_width ) ; } else { index = ( int ) ( y * image_width ) ; } if ( numcomps == 3 ) { for ( x = 0 ; x < image_width ; x ++ ) { unsigned char r , g , b ; if ( ! fread ( & b , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & g , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & r , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } image -> comps [ 0 ] . data [ index ] = r ; image -> comps [ 1 ] . data [ index ] = g ; image -> comps [ 2 ] . data [ index ] = b ; index ++ ; } } else if ( numcomps == 4 ) { for ( x = 0 ; x < image_width ; x ++ ) { unsigned char r , g , b , a ; if ( ! fread ( & b , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & g , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & r , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & a , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } image -> comps [ 0 ] . data [ index ] = r ; image -> comps [ 1 ] . data [ index ] = g ; image -> comps [ 2 ] . data [ index ] = b ; image -> comps [ 3 ] . data [ index ] = a ; index ++ ; } } else { fprintf ( stderr , \"Currently<S2SV_blank>unsupported<S2SV_blank>bit<S2SV_blank>depth<S2SV_blank>:<S2SV_blank>%s\\\\n\" , filename ) ; } } fclose ( f ) ; return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> OPJ_CLRSPC_SRGB ; } if ( image_height != 0 && image_width > 10000000 / image_height / numcomps ) { char ch ; OPJ_UINT64 expected_file_size = ( OPJ_UINT64 ) image_width * image_height * numcomps ; long curpos = ftell ( f ) ; if ( expected_file_size > ( OPJ_UINT64 ) INT_MAX ) { expected_file_size = ( OPJ_UINT64 ) INT_MAX ; } fseek ( f , ( long ) expected_file_size - 1 , SEEK_SET ) ; if ( fread ( & ch , 1 , 1 , f ) != 1 ) { fclose ( f ) ; return NULL ; } fseek ( f , curpos , SEEK_SET ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2188\n\n```\nCWE-000 static int iowarrior_probe ( struct usb_interface * interface , const struct usb_device_id * id ) { struct usb_device * udev = interface_to_usbdev ( interface ) ; struct iowarrior * dev = NULL ; struct usb_host_interface * iface_desc ; struct usb_endpoint_descriptor * endpoint ; int i ; int retval = - ENOMEM ; dev = kzalloc ( sizeof ( struct iowarrior ) , GFP_KERNEL ) ; if ( dev == NULL ) { dev_err ( & interface -> dev , \"Out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; return retval ; } mutex_init ( & dev -> mutex ) ; atomic_set ( & dev -> intr_idx , 0 ) ; atomic_set ( & dev -> read_idx , 0 ) ; spin_lock_init ( & dev -> intr_idx_lock ) ; atomic_set ( & dev -> overflow_flag , 0 ) ; init_waitqueue_head ( & dev -> read_wait ) ; atomic_set ( & dev -> write_busy , 0 ) ; init_waitqueue_head ( & dev -> write_wait ) ; dev -> udev = udev ; dev -> interface = interface ; iface_desc = interface -> cur_altsetting ; <S2SV_StartBug> dev -> product_id = le16_to_cpu ( udev -> descriptor . idProduct ) ; <S2SV_EndBug> for ( i = 0 ; i < iface_desc -> desc . bNumEndpoints ; ++ i ) { endpoint = & iface_desc -> endpoint [ i ] . desc ; if ( usb_endpoint_is_int_in ( endpoint ) ) dev -> int_in_endpoint = endpoint ; if ( usb_endpoint_is_int_out ( endpoint ) ) dev -> int_out_endpoint = endpoint ; } dev -> report_size = usb_endpoint_maxp ( dev -> int_in_endpoint ) ; if ( ( dev -> interface -> cur_altsetting -> desc . bInterfaceNumber == 0 ) && ( dev -> product_id == USB_DEVICE_ID_CODEMERCS_IOW56 ) ) dev -> report_size = 7 ; dev -> int_in_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! dev -> int_in_urb ) { dev_err ( & interface -> dev , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>interrupt_in_urb\\\\n\" ) ; goto error ; } dev -> int_in_buffer = kmalloc ( dev -> report_size , GFP_KERNEL ) ; if ( ! dev -> int_in_buffer ) { dev_err ( & interface -> dev , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>int_in_buffer\\\\n\" ) ; goto error ; } usb_fill_int_urb ( dev -> int_in_urb , dev -> udev , usb_rcvintpipe ( dev -> udev , dev -> int_in_endpoint -> bEndpointAddress ) , dev -> int_in_buffer , dev -> report_size , iowarrior_callback , dev , dev -> int_in_endpoint -> bInterval ) ; dev -> read_queue = kmalloc ( ( ( dev -> report_size + 1 ) * MAX_INTERRUPT_BUFFER ) , GFP_KERNEL ) ; if ( ! dev -> read_queue ) { dev_err ( & interface -> dev , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>read_queue\\\\n\" ) ; goto error ; } memset ( dev -> chip_serial , 0x00 , sizeof ( dev -> chip_serial ) ) ; usb_string ( udev , udev -> descriptor . iSerialNumber , dev -> chip_serial , sizeof ( dev -> chip_serial ) ) ; if ( strlen ( dev -> chip_serial ) != 8 ) memset ( dev -> chip_serial , 0x00 , sizeof ( dev -> chip_serial ) ) ; if ( dev -> interface -> cur_altsetting -> desc . bInterfaceNumber == 0 ) { usb_control_msg ( udev , usb_sndctrlpipe ( udev , 0 ) , 0x0A , USB_TYPE_CLASS | USB_RECIP_INTERFACE , 0 , 0 , NULL , 0 , USB_CTRL_SET_TIMEOUT ) ; } dev -> present = 1 ; usb_set_intfdata ( interface , dev ) ; retval = usb_register_dev ( interface , & iowarrior_class ) ; if ( retval ) { dev_err ( & interface -> dev , \"Not<S2SV_blank>able<S2SV_blank>to<S2SV_blank>get<S2SV_blank>a<S2SV_blank>minor<S2SV_blank>for<S2SV_blank>this<S2SV_blank>device.\\\\n\" ) ; usb_set_intfdata ( interface , NULL ) ; goto error ; } dev -> minor = interface -> minor ; dev_info ( & interface -> dev , \"IOWarrior<S2SV_blank>product=0x%x,<S2SV_blank>serial=%s<S2SV_blank>interface=%d<S2SV_blank>\" \"now<S2SV_blank>attached<S2SV_blank>to<S2SV_blank>iowarrior%d\\\\n\" , dev -> product_id , dev -> chip_serial , iface_desc -> desc . bInterfaceNumber , dev -> minor - IOWARRIOR_MINOR_BASE ) ; return retval ; error : iowarrior_delete ( dev ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> idProduct ) ; if ( iface_desc -> desc . bNumEndpoints < 1 ) { dev_err ( & interface -> dev , \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>endpoints\\\\n\" ) ; retval = - EINVAL ; goto error ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7533\n\n```\nCWE-362 int __fsnotify_parent ( const struct path * path , struct dentry * dentry , __u32 mask ) { struct dentry * parent ; struct inode * p_inode ; int ret = 0 ; if ( ! dentry ) dentry = path -> dentry ; if ( ! ( dentry -> d_flags & DCACHE_FSNOTIFY_PARENT_WATCHED ) ) return 0 ; parent = dget_parent ( dentry ) ; p_inode = parent -> d_inode ; if ( unlikely ( ! fsnotify_inode_watches_children ( p_inode ) ) ) __fsnotify_update_child_dentry_flags ( p_inode ) ; else if ( p_inode -> i_fsnotify_mask & mask ) { <S2SV_StartBug> mask |= FS_EVENT_ON_CHILD ; <S2SV_EndBug> <S2SV_StartBug> if ( path ) <S2SV_EndBug> ret = fsnotify ( p_inode , mask , path , FSNOTIFY_EVENT_PATH , <S2SV_StartBug> dentry -> d_name . name , 0 ) ; <S2SV_EndBug> else ret = fsnotify ( p_inode , mask , dentry -> d_inode , FSNOTIFY_EVENT_INODE , <S2SV_StartBug> dentry -> d_name . name , 0 ) ; <S2SV_EndBug> } dput ( parent ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mask ) { struct name_snapshot name ; <S2SV_ModStart> |= FS_EVENT_ON_CHILD ; take_dentry_name_snapshot ( & name , dentry ) ; <S2SV_ModStart> , FSNOTIFY_EVENT_PATH , name <S2SV_ModEnd> . name , <S2SV_ModStart> , FSNOTIFY_EVENT_INODE , name <S2SV_ModEnd> . name , <S2SV_ModStart> name , 0 ) ; release_dentry_name_snapshot ( & name\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4943\n\n```\nCWE-264 static int pppol2tp_getsockopt ( struct socket * sock , int level , int optname , char __user * optval , int __user * optlen ) { struct sock * sk = sock -> sk ; struct l2tp_session * session ; struct l2tp_tunnel * tunnel ; int val , len ; int err ; struct pppol2tp_session * ps ; if ( level != SOL_PPPOL2TP ) <S2SV_StartBug> return udp_prot . getsockopt ( sk , level , optname , optval , optlen ) ; <S2SV_EndBug> if ( get_user ( len , optlen ) ) return - EFAULT ; len = min_t ( unsigned int , len , sizeof ( int ) ) ; if ( len < 0 ) return - EINVAL ; err = - ENOTCONN ; if ( sk -> sk_user_data == NULL ) goto end ; err = - EBADF ; session = pppol2tp_sock_to_session ( sk ) ; if ( session == NULL ) goto end ; ps = l2tp_session_priv ( session ) ; if ( ( session -> session_id == 0 ) && ( session -> peer_session_id == 0 ) ) { err = - EBADF ; tunnel = l2tp_sock_to_tunnel ( ps -> tunnel_sock ) ; if ( tunnel == NULL ) goto end_put_sess ; err = pppol2tp_tunnel_getsockopt ( sk , tunnel , optname , & val ) ; sock_put ( ps -> tunnel_sock ) ; } else err = pppol2tp_session_getsockopt ( sk , session , optname , & val ) ; err = - EFAULT ; if ( put_user ( len , optlen ) ) goto end_put_sess ; if ( copy_to_user ( ( void __user * ) optval , & val , len ) ) goto end_put_sess ; err = 0 ; end_put_sess : sock_put ( sk ) ; end : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SOL_PPPOL2TP ) return - EINVAL <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12193\n\n```\nCWE-476 static bool assoc_array_insert_into_terminal_node ( struct assoc_array_edit * edit , const struct assoc_array_ops * ops , const void * index_key , struct assoc_array_walk_result * result ) { struct assoc_array_shortcut * shortcut , * new_s0 ; struct assoc_array_node * node , * new_n0 , * new_n1 , * side ; struct assoc_array_ptr * ptr ; unsigned long dissimilarity , base_seg , blank ; size_t keylen ; bool have_meta ; int level , diff ; int slot , next_slot , free_slot , i , j ; node = result -> terminal_node . node ; level = result -> terminal_node . level ; edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] = result -> terminal_node . slot ; pr_devel ( \"-->%s()\\\\n\" , __func__ ) ; free_slot = - 1 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; if ( ! ptr ) { free_slot = i ; continue ; } if ( assoc_array_ptr_is_leaf ( ptr ) && ops -> compare_object ( assoc_array_ptr_to_leaf ( ptr ) , index_key ) ) { pr_devel ( \"replace<S2SV_blank>in<S2SV_blank>slot<S2SV_blank>%d\\\\n\" , i ) ; edit -> leaf_p = & node -> slots [ i ] ; edit -> dead_leaf = node -> slots [ i ] ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[replace]\\\\n\" , __func__ ) ; return true ; } } if ( free_slot >= 0 ) { pr_devel ( \"insert<S2SV_blank>in<S2SV_blank>free<S2SV_blank>slot<S2SV_blank>%d\\\\n\" , free_slot ) ; edit -> leaf_p = & node -> slots [ free_slot ] ; edit -> adjust_count_on = node ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[insert]\\\\n\" , __func__ ) ; return true ; } new_n0 = kzalloc ( sizeof ( struct assoc_array_node ) , GFP_KERNEL ) ; if ( ! new_n0 ) return false ; edit -> new_meta [ 0 ] = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 = kzalloc ( sizeof ( struct assoc_array_node ) , GFP_KERNEL ) ; if ( ! new_n1 ) return false ; edit -> new_meta [ 1 ] = assoc_array_node_to_ptr ( new_n1 ) ; pr_devel ( \"no<S2SV_blank>spare<S2SV_blank>slots\\\\n\" ) ; have_meta = false ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; if ( assoc_array_ptr_is_meta ( ptr ) ) { edit -> segment_cache [ i ] = 0xff ; have_meta = true ; continue ; } base_seg = ops -> get_object_key_chunk ( assoc_array_ptr_to_leaf ( ptr ) , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ i ] = base_seg & ASSOC_ARRAY_FAN_MASK ; } if ( have_meta ) { pr_devel ( \"have<S2SV_blank>meta\\\\n\" ) ; goto split_node ; } dissimilarity = 0 ; base_seg = edit -> segment_cache [ 0 ] ; for ( i = 1 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) dissimilarity |= edit -> segment_cache [ i ] ^ base_seg ; pr_devel ( \"only<S2SV_blank>leaves;<S2SV_blank>dissimilarity=%lx\\\\n\" , dissimilarity ) ; if ( ( dissimilarity & ASSOC_ARRAY_FAN_MASK ) == 0 ) { if ( ( edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] ^ base_seg ) == 0 ) goto all_leaves_cluster_together ; <S2SV_StartBug> goto present_leaves_cluster_but_not_new_leaf ; <S2SV_EndBug> } split_node : pr_devel ( \"split<S2SV_blank>node\\\\n\" ) ; edit -> set [ 0 ] . to = assoc_array_node_to_ptr ( new_n0 ) ; new_n0 -> back_pointer = node -> back_pointer ; new_n0 -> parent_slot = node -> parent_slot ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = - 1 ; do_split_node : pr_devel ( \"do_split_node\\\\n\" ) ; new_n0 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; new_n1 -> nr_leaves_on_branch = 0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { slot = edit -> segment_cache [ i ] ; if ( slot != 0xff ) for ( j = i + 1 ; j < ASSOC_ARRAY_FAN_OUT + 1 ; j ++ ) if ( edit -> segment_cache [ j ] == slot ) goto found_slot_for_multiple_occupancy ; } found_slot_for_multiple_occupancy : pr_devel ( \"same<S2SV_blank>slot:<S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>[%02x]\\\\n\" , i , j , slot ) ; BUG_ON ( i >= ASSOC_ARRAY_FAN_OUT ) ; BUG_ON ( j >= ASSOC_ARRAY_FAN_OUT + 1 ) ; BUG_ON ( slot >= ASSOC_ARRAY_FAN_OUT ) ; new_n1 -> parent_slot = slot ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) if ( assoc_array_ptr_is_meta ( node -> slots [ i ] ) ) new_n0 -> slots [ i ] = node -> slots [ i ] ; else new_n0 -> slots [ i ] = NULL ; BUG_ON ( new_n0 -> slots [ slot ] != NULL ) ; new_n0 -> slots [ slot ] = assoc_array_node_to_ptr ( new_n1 ) ; free_slot = - 1 ; next_slot = 0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { if ( assoc_array_ptr_is_meta ( node -> slots [ i ] ) ) continue ; if ( edit -> segment_cache [ i ] == slot ) { new_n1 -> slots [ next_slot ++ ] = node -> slots [ i ] ; new_n1 -> nr_leaves_on_branch ++ ; } else { do { free_slot ++ ; } while ( new_n0 -> slots [ free_slot ] != NULL ) ; new_n0 -> slots [ free_slot ] = node -> slots [ i ] ; } } pr_devel ( \"filtered:<S2SV_blank>f=%x<S2SV_blank>n=%x\\\\n\" , free_slot , next_slot ) ; if ( edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] != slot ) { do { free_slot ++ ; } while ( new_n0 -> slots [ free_slot ] != NULL ) ; edit -> leaf_p = & new_n0 -> slots [ free_slot ] ; edit -> adjust_count_on = new_n0 ; } else { edit -> leaf_p = & new_n1 -> slots [ next_slot ++ ] ; edit -> adjust_count_on = new_n1 ; } BUG_ON ( next_slot <= 1 ) ; edit -> set_backpointers_to = assoc_array_node_to_ptr ( new_n0 ) ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { if ( edit -> segment_cache [ i ] == 0xff ) { ptr = node -> slots [ i ] ; BUG_ON ( assoc_array_ptr_is_leaf ( ptr ) ) ; if ( assoc_array_ptr_is_node ( ptr ) ) { side = assoc_array_ptr_to_node ( ptr ) ; edit -> set_backpointers [ i ] = & side -> back_pointer ; } else { shortcut = assoc_array_ptr_to_shortcut ( ptr ) ; edit -> set_backpointers [ i ] = & shortcut -> back_pointer ; } } } ptr = node -> back_pointer ; if ( ! ptr ) edit -> set [ 0 ] . ptr = & edit -> array -> root ; else if ( assoc_array_ptr_is_node ( ptr ) ) edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_node ( ptr ) -> slots [ node -> parent_slot ] ; else edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_shortcut ( ptr ) -> next_node ; edit -> excised_meta [ 0 ] = assoc_array_node_to_ptr ( node ) ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[split<S2SV_blank>node]\\\\n\" , __func__ ) ; return true ; <S2SV_StartBug> present_leaves_cluster_but_not_new_leaf : <S2SV_EndBug> pr_devel ( \"present<S2SV_blank>leaves<S2SV_blank>cluster<S2SV_blank>but<S2SV_blank>not<S2SV_blank>new<S2SV_blank>leaf\\\\n\" ) ; new_n0 -> back_pointer = node -> back_pointer ; new_n0 -> parent_slot = node -> parent_slot ; new_n0 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = edit -> segment_cache [ 0 ] ; new_n1 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; edit -> adjust_count_on = new_n0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) new_n1 -> slots [ i ] = node -> slots [ i ] ; new_n0 -> slots [ edit -> segment_cache [ 0 ] ] = assoc_array_node_to_ptr ( new_n0 ) ; edit -> leaf_p = & new_n0 -> slots [ edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] ] ; edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_node ( node -> back_pointer ) -> slots [ node -> parent_slot ] ; edit -> set [ 0 ] . to = assoc_array_node_to_ptr ( new_n0 ) ; edit -> excised_meta [ 0 ] = assoc_array_node_to_ptr ( node ) ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[insert<S2SV_blank>node<S2SV_blank>before]\\\\n\" , __func__ ) ; return true ; all_leaves_cluster_together : pr_devel ( \"all<S2SV_blank>leaves<S2SV_blank>cluster<S2SV_blank>together\\\\n\" ) ; diff = INT_MAX ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { int x = ops -> diff_objects ( assoc_array_ptr_to_leaf ( node -> slots [ i ] ) , index_key ) ; if ( x < diff ) { BUG_ON ( x < 0 ) ; diff = x ; } } BUG_ON ( diff == INT_MAX ) ; BUG_ON ( diff < level + ASSOC_ARRAY_LEVEL_STEP ) ; keylen = round_up ( diff , ASSOC_ARRAY_KEY_CHUNK_SIZE ) ; keylen >>= ASSOC_ARRAY_KEY_CHUNK_SHIFT ; new_s0 = kzalloc ( sizeof ( struct assoc_array_shortcut ) + keylen * sizeof ( unsigned long ) , GFP_KERNEL ) ; if ( ! new_s0 ) return false ; edit -> new_meta [ 2 ] = assoc_array_shortcut_to_ptr ( new_s0 ) ; edit -> set [ 0 ] . to = assoc_array_shortcut_to_ptr ( new_s0 ) ; new_s0 -> back_pointer = node -> back_pointer ; new_s0 -> parent_slot = node -> parent_slot ; new_s0 -> next_node = assoc_array_node_to_ptr ( new_n0 ) ; new_n0 -> back_pointer = assoc_array_shortcut_to_ptr ( new_s0 ) ; new_n0 -> parent_slot = 0 ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = - 1 ; new_s0 -> skip_to_level = level = diff & ~ ASSOC_ARRAY_LEVEL_STEP_MASK ; pr_devel ( \"skip_to_level<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[diff<S2SV_blank>%d]\\\\n\" , level , diff ) ; BUG_ON ( level <= 0 ) ; for ( i = 0 ; i < keylen ; i ++ ) new_s0 -> index_key [ i ] = ops -> get_key_chunk ( index_key , i * ASSOC_ARRAY_KEY_CHUNK_SIZE ) ; blank = ULONG_MAX << ( level & ASSOC_ARRAY_KEY_CHUNK_MASK ) ; pr_devel ( \"blank<S2SV_blank>off<S2SV_blank>[%zu]<S2SV_blank>%d:<S2SV_blank>%lx\\\\n\" , keylen - 1 , level , blank ) ; new_s0 -> index_key [ keylen - 1 ] &= ~ blank ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; base_seg = ops -> get_object_key_chunk ( assoc_array_ptr_to_leaf ( ptr ) , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ i ] = base_seg & ASSOC_ARRAY_FAN_MASK ; } base_seg = ops -> get_key_chunk ( index_key , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] = base_seg & ASSOC_ARRAY_FAN_MASK ; goto do_split_node ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto all_leaves_cluster_together ; pr_devel ( \"present<S2SV_blank>leaves<S2SV_blank>cluster<S2SV_blank>but<S2SV_blank>not<S2SV_blank>new<S2SV_blank>leaf\\\\n\" ) <S2SV_ModEnd> ; } split_node <S2SV_ModStart> return true ; <S2SV_ModEnd> all_leaves_cluster_together : pr_devel\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3076\n\n```\nCWE-200 static int skcipher_recvmsg ( struct kiocb * unused , struct socket * sock , struct msghdr * msg , size_t ignored , int flags ) { struct sock * sk = sock -> sk ; struct alg_sock * ask = alg_sk ( sk ) ; struct skcipher_ctx * ctx = ask -> private ; unsigned bs = crypto_ablkcipher_blocksize ( crypto_ablkcipher_reqtfm ( & ctx -> req ) ) ; struct skcipher_sg_list * sgl ; struct scatterlist * sg ; unsigned long iovlen ; struct iovec * iov ; int err = - EAGAIN ; int used ; long copied = 0 ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> for ( iov = msg -> msg_iov , iovlen = msg -> msg_iovlen ; iovlen > 0 ; iovlen -- , iov ++ ) { unsigned long seglen = iov -> iov_len ; char __user * from = iov -> iov_base ; while ( seglen ) { sgl = list_first_entry ( & ctx -> tsgl , struct skcipher_sg_list , list ) ; sg = sgl -> sg ; while ( ! sg -> length ) sg ++ ; used = ctx -> used ; if ( ! used ) { err = skcipher_wait_for_data ( sk , flags ) ; if ( err ) goto unlock ; } used = min_t ( unsigned long , used , seglen ) ; used = af_alg_make_sg ( & ctx -> rsgl , from , used , 1 ) ; err = used ; if ( err < 0 ) goto unlock ; if ( ctx -> more || used < ctx -> used ) used -= used % bs ; err = - EINVAL ; if ( ! used ) goto free ; ablkcipher_request_set_crypt ( & ctx -> req , sg , ctx -> rsgl . sg , used , ctx -> iv ) ; err = af_alg_wait_for_completion ( ctx -> enc ? crypto_ablkcipher_encrypt ( & ctx -> req ) : crypto_ablkcipher_decrypt ( & ctx -> req ) , & ctx -> completion ) ; free : af_alg_free_sg ( & ctx -> rsgl ) ; if ( err ) goto unlock ; copied += used ; from += used ; seglen -= used ; skcipher_pull_sgl ( sk , used ) ; } } err = 0 ; unlock : skcipher_wmem_wakeup ( sk ) ; release_sock ( sk ) ; return copied ? : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; msg -> msg_namelen = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1957\n\n```\nCWE-264 int propagate_mnt ( struct mount * dest_mnt , struct dentry * dest_dentry , struct mount * source_mnt , struct list_head * tree_list ) { <S2SV_StartBug> struct mount * m , * child ; <S2SV_EndBug> int ret = 0 ; struct mount * prev_dest_mnt = dest_mnt ; struct mount * prev_src_mnt = source_mnt ; LIST_HEAD ( tmp_list ) ; LIST_HEAD ( umount_list ) ; for ( m = propagation_next ( dest_mnt , dest_mnt ) ; m ; m = propagation_next ( m , dest_mnt ) ) { int type ; struct mount * source ; if ( IS_MNT_NEW ( m ) ) continue ; <S2SV_StartBug> source = get_source ( m , prev_dest_mnt , prev_src_mnt , & type ) ; <S2SV_EndBug> child = copy_tree ( source , source -> mnt . mnt_root , type ) ; if ( IS_ERR ( child ) ) { ret = PTR_ERR ( child ) ; list_splice ( tree_list , tmp_list . prev ) ; goto out ; } if ( is_subdir ( dest_dentry , m -> mnt . mnt_root ) ) { mnt_set_mountpoint ( m , dest_dentry , child ) ; list_add_tail ( & child -> mnt_hash , tree_list ) ; } else { list_add_tail ( & child -> mnt_hash , & tmp_list ) ; } prev_dest_mnt = m ; prev_src_mnt = child ; } out : br_write_lock ( & vfsmount_lock ) ; while ( ! list_empty ( & tmp_list ) ) { child = list_first_entry ( & tmp_list , struct mount , mnt_hash ) ; umount_tree ( child , 0 , & umount_list ) ; } br_write_unlock ( & vfsmount_lock ) ; release_mounts ( & umount_list ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct user_namespace * user_ns = current -> nsproxy -> mnt_ns -> user_ns ; struct <S2SV_ModStart> & type ) ; if ( m -> mnt_ns -> user_ns != user_ns ) type |= CL_UNPRIVILEGED\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6435\n\n```\nCWE-119 static plist_t parse_string_node ( const char * * bnode , uint64_t size ) { plist_data_t data = plist_new_plist_data ( ) ; data -> type = PLIST_STRING ; data -> strval = ( char * ) malloc ( sizeof ( char ) * ( size + 1 ) ) ; <S2SV_StartBug> memcpy ( data -> strval , * bnode , size ) ; <S2SV_EndBug> data -> strval [ size ] = '\\\\0' ; data -> length = strlen ( data -> strval ) ; return node_create ( NULL , data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( ! data -> strval ) { plist_free_data ( data ) ; PLIST_BIN_ERR ( \"%s:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>%\" PRIu64 \"<S2SV_blank>bytes\\\\n\" , __func__ , sizeof ( char ) * ( size + 1 ) ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_hp_targetinfo ( unsigned long arg ) <S2SV_EndBug> { hp_target_info_t __user * uarg = ( void __user * ) arg ; SCSIDevicePage0_t * pg0_alloc ; SCSIDevicePage3_t * pg3_alloc ; <S2SV_StartBug> MPT_ADAPTER * ioc ; <S2SV_EndBug> MPT_SCSI_HOST * hd = NULL ; <S2SV_StartBug> hp_target_info_t karg ; <S2SV_EndBug> int iocnum ; int data_sz ; dma_addr_t page_dma ; CONFIGPARMS cfg ; ConfigPageHeader_t hdr ; int tmp , np , rc = 0 ; if ( copy_from_user ( & karg , uarg , sizeof ( hp_target_info_t ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_hp_targetinfo<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>hp_host_targetinfo<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uarg ) ; return - EFAULT ; } <S2SV_StartBug> if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || <S2SV_EndBug> <S2SV_StartBug> ( ioc == NULL ) ) { <S2SV_EndBug> printk ( KERN_DEBUG MYNAM \"%s::mptctl_hp_targetinfo()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; <S2SV_StartBug> } <S2SV_EndBug> if ( karg . hdr . id >= MPT_MAX_FC_DEVICES ) return - EINVAL ; dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"mptctl_hp_targetinfo<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; if ( ( ioc -> bus_type == SAS ) || ( ioc -> bus_type == FC ) ) return 0 ; if ( ( ioc -> spi_data . sdp0length == 0 ) || ( ioc -> sh == NULL ) ) return 0 ; if ( ioc -> sh -> host_no != karg . hdr . host ) return - ENODEV ; data_sz = ioc -> spi_data . sdp0length * 4 ; pg0_alloc = ( SCSIDevicePage0_t * ) pci_alloc_consistent ( ioc -> pcidev , data_sz , & page_dma ) ; if ( pg0_alloc ) { hdr . PageVersion = ioc -> spi_data . sdp0version ; hdr . PageLength = data_sz ; hdr . PageNumber = 0 ; hdr . PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE ; cfg . cfghdr . hdr = & hdr ; cfg . action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT ; cfg . dir = 0 ; cfg . timeout = 0 ; cfg . physAddr = page_dma ; cfg . pageAddr = ( karg . hdr . channel << 8 ) | karg . hdr . id ; if ( ( rc = mpt_config ( ioc , & cfg ) ) == 0 ) { np = le32_to_cpu ( pg0_alloc -> NegotiatedParameters ) ; karg . negotiated_width = np & MPI_SCSIDEVPAGE0_NP_WIDE ? HP_BUS_WIDTH_16 : HP_BUS_WIDTH_8 ; if ( np & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_OFFSET_MASK ) { tmp = ( np & MPI_SCSIDEVPAGE0_NP_NEG_SYNC_PERIOD_MASK ) >> 8 ; if ( tmp < 0x09 ) karg . negotiated_speed = HP_DEV_SPEED_ULTRA320 ; else if ( tmp <= 0x09 ) karg . negotiated_speed = HP_DEV_SPEED_ULTRA160 ; else if ( tmp <= 0x0A ) karg . negotiated_speed = HP_DEV_SPEED_ULTRA2 ; else if ( tmp <= 0x0C ) karg . negotiated_speed = HP_DEV_SPEED_ULTRA ; else if ( tmp <= 0x25 ) karg . negotiated_speed = HP_DEV_SPEED_FAST ; else karg . negotiated_speed = HP_DEV_SPEED_ASYNC ; } else karg . negotiated_speed = HP_DEV_SPEED_ASYNC ; } pci_free_consistent ( ioc -> pcidev , data_sz , ( u8 * ) pg0_alloc , page_dma ) ; } karg . message_rejects = - 1 ; karg . phase_errors = - 1 ; karg . parity_errors = - 1 ; karg . select_timeouts = - 1 ; hdr . PageVersion = 0 ; hdr . PageLength = 0 ; hdr . PageNumber = 3 ; hdr . PageType = MPI_CONFIG_PAGETYPE_SCSI_DEVICE ; cfg . cfghdr . hdr = & hdr ; cfg . action = MPI_CONFIG_ACTION_PAGE_HEADER ; cfg . dir = 0 ; cfg . timeout = 0 ; cfg . physAddr = - 1 ; if ( ( mpt_config ( ioc , & cfg ) == 0 ) && ( cfg . cfghdr . hdr -> PageLength > 0 ) ) { cfg . action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT ; data_sz = ( int ) cfg . cfghdr . hdr -> PageLength * 4 ; pg3_alloc = ( SCSIDevicePage3_t * ) pci_alloc_consistent ( ioc -> pcidev , data_sz , & page_dma ) ; if ( pg3_alloc ) { cfg . physAddr = page_dma ; cfg . pageAddr = ( karg . hdr . channel << 8 ) | karg . hdr . id ; if ( ( rc = mpt_config ( ioc , & cfg ) ) == 0 ) { karg . message_rejects = ( u32 ) le16_to_cpu ( pg3_alloc -> MsgRejectCount ) ; karg . phase_errors = ( u32 ) le16_to_cpu ( pg3_alloc -> PhaseErrorCount ) ; karg . parity_errors = ( u32 ) le16_to_cpu ( pg3_alloc -> ParityErrorCount ) ; } pci_free_consistent ( ioc -> pcidev , data_sz , ( u8 * ) pg3_alloc , page_dma ) ; } } hd = shost_priv ( ioc -> sh ) ; if ( hd != NULL ) karg . select_timeouts = hd -> sel_timeout [ karg . hdr . id ] ; if ( copy_to_user ( ( char __user * ) arg , & karg , sizeof ( hp_target_info_t ) ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_hp_target_info<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>out<S2SV_blank>mpt_ioctl_targetinfo<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , uarg ) ; return - EFAULT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_hp_targetinfo ( MPT_ADAPTER * ioc , <S2SV_ModStart> * pg3_alloc ; <S2SV_ModEnd> MPT_SCSI_HOST * hd <S2SV_ModStart> ; hp_target_info_t karg <S2SV_ModEnd> ; int data_sz <S2SV_ModStart> } if ( karg . hdr . id >= MPT_MAX_FC_DEVICES ) return - EINVAL ; dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"mptctl_hp_targetinfo<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; if ( ( ioc -> bus_type == SAS ) || ( ioc -> bus_type == FC ) ) return 0 ; if ( ( ioc -> spi_data . sdp0length == 0 ) || ( ioc -> sh <S2SV_ModEnd> == NULL ) <S2SV_ModStart> NULL ) ) return 0 ; if ( ioc -> sh -> host_no != karg . hdr . host ) <S2SV_ModEnd> return - ENODEV <S2SV_ModStart> - ENODEV ; <S2SV_ModEnd> data_sz = ioc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-252(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-1999-0199\n\n```\nCWE-252 void vsyslog ( pri , fmt , ap ) int pri ; register const char * fmt ; va_list ap ; { struct tm now_tm ; time_t now ; int fd ; FILE * f ; char * buf = 0 ; size_t bufsize = 0 ; size_t prioff , msgoff ; struct sigaction action , oldaction ; struct sigaction * oldaction_ptr = NULL ; int sigpipe ; int saved_errno = errno ; # define INTERNALLOG LOG_ERR | LOG_CONS | LOG_PERROR | LOG_PID if ( pri & ~ ( LOG_PRIMASK | LOG_FACMASK ) ) { syslog ( INTERNALLOG , \"syslog:<S2SV_blank>unknown<S2SV_blank>facility/priority:<S2SV_blank>%x\" , pri ) ; pri &= LOG_PRIMASK | LOG_FACMASK ; } if ( ( LOG_MASK ( LOG_PRI ( pri ) ) & LogMask ) == 0 ) return ; if ( ( pri & LOG_FACMASK ) == 0 ) pri |= LogFacility ; f = open_memstream ( & buf , & bufsize ) ; prioff = fprintf ( f , \"<%d>\" , pri ) ; ( void ) time ( & now ) ; # ifdef USE_IN_LIBIO f -> _IO_write_ptr += strftime ( f -> _IO_write_ptr , f -> _IO_write_end - f -> _IO_write_ptr , \"%h<S2SV_blank>%e<S2SV_blank>%T<S2SV_blank>\" , __localtime_r ( & now , & now_tm ) ) ; # else f -> __bufp += strftime ( f -> __bufp , f -> __put_limit - f -> __bufp , \"%h<S2SV_blank>%e<S2SV_blank>%T<S2SV_blank>\" , __localtime_r ( & now , & now_tm ) ) ; # endif msgoff = ftell ( f ) ; if ( LogTag == NULL ) LogTag = __progname ; if ( LogTag != NULL ) fputs_unlocked ( LogTag , f ) ; if ( LogStat & LOG_PID ) fprintf ( f , \"[%d]\" , __getpid ( ) ) ; if ( LogTag != NULL ) putc_unlocked ( ':' , f ) , putc_unlocked ( '<S2SV_blank>' , f ) ; __set_errno ( saved_errno ) ; vfprintf ( f , fmt , ap ) ; fclose ( f ) ; if ( LogStat & LOG_PERROR ) { struct iovec iov [ 2 ] ; register struct iovec * v = iov ; v -> iov_base = buf + msgoff ; v -> iov_len = bufsize - msgoff ; <S2SV_StartBug> ++ v ; <S2SV_EndBug> v -> iov_base = ( char * ) \"\\\\n\" ; v -> iov_len = 1 ; <S2SV_StartBug> ( void ) __writev ( STDERR_FILENO , iov , 2 ) ; <S2SV_EndBug> } __libc_cleanup_region_start ( ( void ( * ) ( void * ) ) cancel_handler , & oldaction_ptr ) ; __libc_lock_lock ( syslog_lock ) ; memset ( & action , 0 , sizeof ( action ) ) ; action . sa_handler = sigpipe_handler ; sigemptyset ( & action . sa_mask ) ; sigpipe = __sigaction ( SIGPIPE , & action , & oldaction ) ; if ( sigpipe == 0 ) oldaction_ptr = & oldaction ; if ( ! connected ) openlog_internal ( LogTag , LogStat | LOG_NDELAY , 0 ) ; if ( LogType == SOCK_STREAM ) ++ bufsize ; if ( ! connected || __send ( LogFile , buf , bufsize , 0 ) < 0 ) { closelog_internal ( ) ; if ( LogStat & LOG_CONS && ( fd = __open ( _PATH_CONSOLE , O_WRONLY | O_NOCTTY , 0 ) ) >= 0 ) { dprintf ( fd , \"%s\\\\r\\\\n\" , buf + msgoff ) ; ( void ) __close ( fd ) ; } } if ( sigpipe == 0 ) __sigaction ( SIGPIPE , & oldaction , ( struct sigaction * ) NULL ) ; __libc_cleanup_region_end ( 0 ) ; __libc_lock_unlock ( syslog_lock ) ; free ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - msgoff ; if ( buf [ bufsize - 1 ] != '\\\\n' ) { <S2SV_ModStart> = 1 ; } <S2SV_ModStart> , iov , v - iov + 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-32020\n\n```\nCWE-119 void * pvPortMalloc ( size_t xWantedSize ) { BlockLink_t * pxBlock , * pxPreviousBlock , * pxNewBlockLink ; static BaseType_t xHeapHasBeenInitialised = pdFALSE ; void * pvReturn = NULL ; vTaskSuspendAll ( ) ; { if ( xHeapHasBeenInitialised == pdFALSE ) { prvHeapInit ( ) ; xHeapHasBeenInitialised = pdTRUE ; } <S2SV_StartBug> if ( xWantedSize > 0 ) <S2SV_EndBug> { xWantedSize += heapSTRUCT_SIZE ; <S2SV_StartBug> if ( ( xWantedSize & portBYTE_ALIGNMENT_MASK ) != 0 ) <S2SV_EndBug> { xWantedSize += ( portBYTE_ALIGNMENT - ( xWantedSize & portBYTE_ALIGNMENT_MASK ) ) ; <S2SV_StartBug> } <S2SV_EndBug> } <S2SV_StartBug> if ( ( xWantedSize > 0 ) && ( xWantedSize < configADJUSTED_HEAP_SIZE ) ) <S2SV_EndBug> { pxPreviousBlock = & xStart ; pxBlock = xStart . pxNextFreeBlock ; while ( ( pxBlock -> xBlockSize < xWantedSize ) && ( pxBlock -> pxNextFreeBlock != NULL ) ) { pxPreviousBlock = pxBlock ; pxBlock = pxBlock -> pxNextFreeBlock ; } if ( pxBlock != & xEnd ) { pvReturn = ( void * ) ( ( ( uint8_t * ) pxPreviousBlock -> pxNextFreeBlock ) + heapSTRUCT_SIZE ) ; pxPreviousBlock -> pxNextFreeBlock = pxBlock -> pxNextFreeBlock ; if ( ( pxBlock -> xBlockSize - xWantedSize ) > heapMINIMUM_BLOCK_SIZE ) { pxNewBlockLink = ( void * ) ( ( ( uint8_t * ) pxBlock ) + xWantedSize ) ; pxNewBlockLink -> xBlockSize = pxBlock -> xBlockSize - xWantedSize ; pxBlock -> xBlockSize = xWantedSize ; prvInsertBlockIntoFreeList ( ( pxNewBlockLink ) ) ; } xFreeBytesRemaining -= pxBlock -> xBlockSize ; } } traceMALLOC ( pvReturn , xWantedSize ) ; } ( void ) xTaskResumeAll ( ) ; # if ( configUSE_MALLOC_FAILED_HOOK == 1 ) { if ( pvReturn == NULL ) { extern void vApplicationMallocFailedHook ( void ) ; vApplicationMallocFailedHook ( ) ; } } # endif return pvReturn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ( <S2SV_ModStart> > 0 ) && ( ( xWantedSize + heapSTRUCT_SIZE ) > xWantedSize ) ) <S2SV_ModStart> ( ( xWantedSize + ( portBYTE_ALIGNMENT - ( xWantedSize <S2SV_ModStart> & portBYTE_ALIGNMENT_MASK ) ) ) > xWantedSize <S2SV_ModEnd> ) { xWantedSize <S2SV_ModStart> ) ) ; configASSERT ( ( xWantedSize & portBYTE_ALIGNMENT_MASK ) == 0 ) ; } else { xWantedSize = 0 ; } } else { xWantedSize = 0 ; <S2SV_ModEnd> } if ( <S2SV_ModStart> && ( xWantedSize <= xFreeBytesRemaining <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19246\n\n```\nCWE-125 static int str_lower_case_match ( OnigEncoding enc , int case_fold_flag , const UChar * t , const UChar * tend , const UChar * p , const UChar * end ) { int lowlen ; UChar * q , lowbuf [ ONIGENC_MBC_CASE_FOLD_MAXLEN ] ; while ( t < tend ) { lowlen = ONIGENC_MBC_CASE_FOLD ( enc , case_fold_flag , & p , end , lowbuf ) ; q = lowbuf ; while ( lowlen > 0 ) { <S2SV_StartBug> if ( * t ++ != * q ++ ) return 0 ; <S2SV_EndBug> lowlen -- ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( t >= tend ) return 0 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static void nsc_encode_sse2 ( NSC_CONTEXT * context , const BYTE * data , <S2SV_EndBug> UINT32 scanline ) { nsc_encode_argb_to_aycocg_sse2 ( context , data , scanline ) ; if ( context -> ChromaSubsamplingLevel > 0 ) { nsc_encode_subsampling_sse2 ( context ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> nsc_encode_sse2 ( NSC_CONTEXT <S2SV_ModStart> ) ; } return TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13001\n\n```\nCWE-125 static void nfs_printfh ( netdissect_options * ndo , register const uint32_t * dp , const u_int len ) { my_fsid fsid ; uint32_t ino ; const char * sfsname = NULL ; char * spacep ; if ( ndo -> ndo_uflag ) { u_int i ; char const * sep = \"\" ; ND_PRINT ( ( ndo , \"<S2SV_blank>fh[\" ) ) ; for ( i = 0 ; i < len ; i ++ ) { ND_PRINT ( ( ndo , \"%s%x\" , sep , dp [ i ] ) ) ; sep = \":\" ; } ND_PRINT ( ( ndo , \"]\" ) ) ; return ; } Parse_fh ( ( const u_char * ) dp , len , & fsid , & ino , NULL , & sfsname , 0 ) ; if ( sfsname ) { <S2SV_StartBug> static char temp [ NFSX_V3FHMAX + 1 ] ; <S2SV_EndBug> <S2SV_StartBug> strncpy ( temp , sfsname , NFSX_V3FHMAX ) ; <S2SV_EndBug> <S2SV_StartBug> temp [ sizeof ( temp ) - 1 ] = '\\\\0' ; <S2SV_EndBug> spacep = strchr ( temp , '<S2SV_blank>' ) ; if ( spacep ) * spacep = '\\\\0' ; ND_PRINT ( ( ndo , \"<S2SV_blank>fh<S2SV_blank>%s/\" , temp ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>fh<S2SV_blank>%d,%d/\" , fsid . Fsid_dev . Major , fsid . Fsid_dev . Minor ) ) ; } if ( fsid . Fsid_dev . Minor == 257 ) ND_PRINT ( ( ndo , \"%s\" , fsid . Opaque_Handle ) ) ; else ND_PRINT ( ( ndo , \"%ld\" , ( long ) ino ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sfsname ) { <S2SV_ModEnd> char temp [ <S2SV_ModStart> 1 ] ; u_int stringlen ; stringlen = len ; if ( stringlen > NFSX_V3FHMAX ) stringlen = NFSX_V3FHMAX ; <S2SV_ModStart> , sfsname , stringlen <S2SV_ModEnd> ) ; temp <S2SV_ModStart> ; temp [ stringlen <S2SV_ModEnd> ] = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7416\n\n```\nCWE-119 PHP_FUNCTION ( msgfmt_format_message ) { zval * args ; UChar * spattern = NULL ; int spattern_len = 0 ; char * pattern = NULL ; int pattern_len = 0 ; const char * slocale = NULL ; int slocale_len = 0 ; MessageFormatter_object mf = { 0 } ; MessageFormatter_object * mfo = & mf ; if ( zend_parse_method_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , getThis ( ) , \"ssa\" , & slocale , & slocale_len , & pattern , & pattern_len , & args ) == FAILURE ) { intl_error_set ( NULL , U_ILLEGAL_ARGUMENT_ERROR , \"msgfmt_format_message:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>input<S2SV_blank>params\" , 0 TSRMLS_CC ) ; RETURN_FALSE ; <S2SV_StartBug> } <S2SV_EndBug> msgformat_data_init ( & mfo -> mf_data TSRMLS_CC ) ; if ( pattern && pattern_len ) { intl_convert_utf8_to_utf16 ( & spattern , & spattern_len , pattern , pattern_len , & INTL_DATA_ERROR_CODE ( mfo ) ) ; if ( U_FAILURE ( INTL_DATA_ERROR_CODE ( ( mfo ) ) ) ) { intl_error_set ( NULL , U_ILLEGAL_ARGUMENT_ERROR , \"msgfmt_format_message:<S2SV_blank>error<S2SV_blank>converting<S2SV_blank>pattern<S2SV_blank>to<S2SV_blank>UTF-16\" , 0 TSRMLS_CC ) ; RETURN_FALSE ; } } else { spattern_len = 0 ; spattern = NULL ; } if ( slocale_len == 0 ) { slocale = intl_locale_get_default ( TSRMLS_C ) ; } # ifdef MSG_FORMAT_QUOTE_APOS if ( msgformat_fix_quotes ( & spattern , & spattern_len , & INTL_DATA_ERROR_CODE ( mfo ) ) != SUCCESS ) { intl_error_set ( NULL , U_INVALID_FORMAT_ERROR , \"msgfmt_format_message:<S2SV_blank>error<S2SV_blank>converting<S2SV_blank>pattern<S2SV_blank>to<S2SV_blank>quote-friendly<S2SV_blank>format\" , 0 TSRMLS_CC ) ; RETURN_FALSE ; } # endif MSG_FORMAT_OBJECT ( mfo ) = umsg_open ( spattern , spattern_len , slocale , NULL , & INTL_DATA_ERROR_CODE ( mfo ) ) ; if ( spattern && spattern_len ) { efree ( spattern ) ; } INTL_METHOD_CHECK_STATUS ( mfo , \"Creating<S2SV_blank>message<S2SV_blank>formatter<S2SV_blank>failed\" ) ; msgfmt_do_format ( mfo , args , return_value TSRMLS_CC ) ; msgformat_data_free ( & mfo -> mf_data TSRMLS_CC ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RETURN_FALSE ; } INTL_CHECK_LOCALE_LEN ( slocale_len ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int process_cmd_sock ( int h ) { sock_cmd_t cmd = { - 1 , 0 , 0 , 0 , 0 } ; int fd = ts [ h ] . cmd_fdr ; <S2SV_StartBug> if ( recv ( fd , & cmd , sizeof ( cmd ) , MSG_WAITALL ) != sizeof ( cmd ) ) <S2SV_EndBug> { APPL_TRACE_ERROR ( \"recv<S2SV_blank>cmd<S2SV_blank>errno:%d\" , errno ) ; return FALSE ; } APPL_TRACE_DEBUG ( \"cmd.id:%d\" , cmd . id ) ; switch ( cmd . id ) { case CMD_ADD_FD : add_poll ( h , cmd . fd , cmd . type , cmd . flags , cmd . user_id ) ; break ; case CMD_REMOVE_FD : for ( int i = 1 ; i < MAX_POLL ; ++ i ) { poll_slot_t * poll_slot = & ts [ h ] . ps [ i ] ; if ( poll_slot -> pfd . fd == cmd . fd ) { remove_poll ( h , poll_slot , poll_slot -> flags ) ; break ; } } close ( cmd . fd ) ; break ; case CMD_WAKEUP : break ; case CMD_USER_PRIVATE : asrt ( ts [ h ] . cmd_callback ) ; if ( ts [ h ] . cmd_callback ) ts [ h ] . cmd_callback ( fd , cmd . type , cmd . flags , cmd . user_id ) ; break ; case CMD_EXIT : return FALSE ; default : APPL_TRACE_DEBUG ( \"unknown<S2SV_blank>cmd:<S2SV_blank>%d\" , cmd . id ) ; break ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> ) , MSG_WAITALL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4086\n\n```\nCWE-119 static int journal_unmap_buffer ( journal_t * journal , struct buffer_head * bh ) { transaction_t * transaction ; struct journal_head * jh ; int may_free = 1 ; int ret ; BUFFER_TRACE ( bh , \"entry\" ) ; if ( ! buffer_jbd ( bh ) ) goto zap_buffer_unlocked ; write_lock ( & journal -> j_state_lock ) ; jbd_lock_bh_state ( bh ) ; spin_lock ( & journal -> j_list_lock ) ; jh = jbd2_journal_grab_journal_head ( bh ) ; if ( ! jh ) goto zap_buffer_no_jh ; transaction = jh -> b_transaction ; if ( transaction == NULL ) { if ( ! jh -> b_cp_transaction ) { JBUFFER_TRACE ( jh , \"not<S2SV_blank>on<S2SV_blank>any<S2SV_blank>transaction:<S2SV_blank>zap\" ) ; goto zap_buffer ; } if ( ! buffer_dirty ( bh ) ) { goto zap_buffer ; } if ( journal -> j_running_transaction ) { JBUFFER_TRACE ( jh , \"checkpointed:<S2SV_blank>add<S2SV_blank>to<S2SV_blank>BJ_Forget\" ) ; ret = __dispose_buffer ( jh , journal -> j_running_transaction ) ; jbd2_journal_put_journal_head ( jh ) ; spin_unlock ( & journal -> j_list_lock ) ; jbd_unlock_bh_state ( bh ) ; write_unlock ( & journal -> j_state_lock ) ; return ret ; } else { if ( journal -> j_committing_transaction ) { JBUFFER_TRACE ( jh , \"give<S2SV_blank>to<S2SV_blank>committing<S2SV_blank>trans\" ) ; ret = __dispose_buffer ( jh , journal -> j_committing_transaction ) ; jbd2_journal_put_journal_head ( jh ) ; spin_unlock ( & journal -> j_list_lock ) ; jbd_unlock_bh_state ( bh ) ; write_unlock ( & journal -> j_state_lock ) ; return ret ; } else { clear_buffer_jbddirty ( bh ) ; goto zap_buffer ; } } } else if ( transaction == journal -> j_committing_transaction ) { JBUFFER_TRACE ( jh , \"on<S2SV_blank>committing<S2SV_blank>transaction\" ) ; set_buffer_freed ( bh ) ; if ( journal -> j_running_transaction && buffer_jbddirty ( bh ) ) jh -> b_next_transaction = journal -> j_running_transaction ; jbd2_journal_put_journal_head ( jh ) ; spin_unlock ( & journal -> j_list_lock ) ; jbd_unlock_bh_state ( bh ) ; write_unlock ( & journal -> j_state_lock ) ; return 0 ; } else { J_ASSERT_JH ( jh , transaction == journal -> j_running_transaction ) ; JBUFFER_TRACE ( jh , \"on<S2SV_blank>running<S2SV_blank>transaction\" ) ; may_free = __dispose_buffer ( jh , transaction ) ; } zap_buffer : jbd2_journal_put_journal_head ( jh ) ; zap_buffer_no_jh : spin_unlock ( & journal -> j_list_lock ) ; jbd_unlock_bh_state ( bh ) ; write_unlock ( & journal -> j_state_lock ) ; zap_buffer_unlocked : clear_buffer_dirty ( bh ) ; J_ASSERT_BH ( bh , ! buffer_jbddirty ( bh ) ) ; clear_buffer_mapped ( bh ) ; clear_buffer_req ( bh ) ; clear_buffer_new ( bh ) ; <S2SV_StartBug> bh -> b_bdev = NULL ; <S2SV_EndBug> return may_free ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bh ) ; clear_buffer_delay ( bh ) ; clear_buffer_unwritten ( bh ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int jpc_ppm_putparms ( jpc_ms_t * ms , jpc_cstate_t * cstate , jas_stream_t * out ) { jpc_ppm_t * ppm = & ms -> parms . ppm ; cstate = 0 ; <S2SV_StartBug> if ( JAS_CAST ( uint , jas_stream_write ( out , ( char * ) ppm -> data , ppm -> len ) ) != ppm -> len ) { <S2SV_EndBug> return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_stream_write (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16347\n\n```\nCWE-119 static void WritePixels ( struct ngiflib_img * i , struct ngiflib_decode_context * context , const u8 * pixels , u16 n ) { u16 tocopy ; struct ngiflib_gif * p = i -> parent ; while ( n > 0 ) { tocopy = ( context -> Xtogo < n ) ? context -> Xtogo : n ; if ( ! i -> gce . transparent_flag ) { # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif ngiflib_memcpy ( context -> frbuff_p . p8 , pixels , tocopy ) ; pixels += tocopy ; context -> frbuff_p . p8 += tocopy ; # ifndef NGIFLIB_INDEXED_ONLY } else { int j ; for ( j = ( int ) tocopy ; j > 0 ; j -- ) { * ( context -> frbuff_p . p32 ++ ) = GifIndexToTrueColor ( i -> palette , * pixels ++ ) ; } } # endif } else { int j ; # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif for ( j = ( int ) tocopy ; j > 0 ; j -- ) { if ( * pixels != i -> gce . transparent_color ) * context -> frbuff_p . p8 = * pixels ; pixels ++ ; context -> frbuff_p . p8 ++ ; } # ifndef NGIFLIB_INDEXED_ONLY } else { for ( j = ( int ) tocopy ; j > 0 ; j -- ) { if ( * pixels != i -> gce . transparent_color ) { * context -> frbuff_p . p32 = GifIndexToTrueColor ( i -> palette , * pixels ) ; } pixels ++ ; context -> frbuff_p . p32 ++ ; } } # endif } context -> Xtogo -= tocopy ; if ( context -> Xtogo == 0 ) { # ifdef NGIFLIB_ENABLE_CALLBACKS if ( p -> line_cb ) p -> line_cb ( p , context -> line_p , context -> curY ) ; # endif context -> Xtogo = i -> width ; switch ( context -> pass ) { case 0 : context -> curY ++ ; break ; case 1 : context -> curY += 8 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 4 ; } break ; case 2 : context -> curY += 8 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 2 ; } break ; case 3 : context -> curY += 4 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 1 ; } break ; case 4 : context -> curY += 2 ; <S2SV_StartBug> break ; <S2SV_EndBug> } # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif # ifdef NGIFLIB_ENABLE_CALLBACKS context -> line_p . p8 = p -> frbuff . p8 + ( u32 ) context -> curY * p -> width ; context -> frbuff_p . p8 = context -> line_p . p8 + i -> posX ; # else context -> frbuff_p . p8 = p -> frbuff . p8 + ( u32 ) context -> curY * p -> width + i -> posX ; # endif # ifndef NGIFLIB_INDEXED_ONLY } else { # ifdef NGIFLIB_ENABLE_CALLBACKS context -> line_p . p32 = p -> frbuff . p32 + ( u32 ) context -> curY * p -> width ; context -> frbuff_p . p32 = context -> line_p . p32 + i -> posX ; # else context -> frbuff_p . p32 = p -> frbuff . p32 + ( u32 ) context -> curY * p -> width + i -> posX ; # endif } # endif } n -= tocopy ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += 8 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> += 8 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> += 4 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> ; break ; } while ( context -> pass > 0 && context -> pass < 4 && context -> curY >= p -> height ) { switch ( ++ context -> pass ) { case 2 : context -> curY = i -> posY + 4 ; break ; case 3 : context -> curY = i -> posY + 2 ; break ; case 4 : context -> curY = i -> posY + 1 ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 interval * PGTYPESinterval_from_asc ( char * str , char * * endptr ) { interval * result = NULL ; fsec_t fsec ; struct tm tt , * tm = & tt ; int dtype ; int nf ; char * field [ MAXDATEFIELDS ] ; int ftype [ MAXDATEFIELDS ] ; char lowstr [ MAXDATELEN + MAXDATEFIELDS ] ; char * realptr ; char * * ptr = ( endptr != NULL ) ? endptr : & realptr ; tm -> tm_year = 0 ; tm -> tm_mon = 0 ; tm -> tm_mday = 0 ; tm -> tm_hour = 0 ; tm -> tm_min = 0 ; tm -> tm_sec = 0 ; fsec = 0 ; <S2SV_StartBug> if ( strlen ( str ) >= sizeof ( lowstr ) ) <S2SV_EndBug> { errno = PGTYPES_INTVL_BAD_INTERVAL ; <S2SV_StartBug> return NULL ; <S2SV_EndBug> } if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || ( DecodeInterval ( field , ftype , nf , & dtype , tm , & fsec ) != 0 && DecodeISO8601Interval ( str , & dtype , tm , & fsec ) != 0 ) ) { errno = PGTYPES_INTVL_BAD_INTERVAL ; <S2SV_StartBug> return NULL ; <S2SV_EndBug> } result = ( interval * ) pgtypes_alloc ( sizeof ( interval ) ) ; if ( ! result ) return NULL ; if ( dtype != DTK_DELTA ) { errno = PGTYPES_INTVL_BAD_INTERVAL ; free ( result ) ; return NULL ; } <S2SV_StartBug> if ( tm2interval ( tm , fsec , result ) != 0 ) <S2SV_EndBug> { errno = PGTYPES_INTVL_BAD_INTERVAL ; free ( result ) ; return NULL ; } errno = 0 ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( str ) > MAXDATELEN ) { errno = PGTYPES_INTVL_BAD_INTERVAL ; return NULL ; } if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || ( DecodeInterval ( field , ftype , nf , & dtype , tm , & fsec ) != 0 && DecodeISO8601Interval ( str , & dtype , tm , & fsec ) != 0 ) ) { errno = PGTYPES_INTVL_BAD_INTERVAL ; return NULL ; } result = ( interval * ) pgtypes_alloc ( sizeof ( interval ) ) ; if ( ! result ) return NULL ; if ( dtype != DTK_DELTA <S2SV_ModEnd> ) { errno <S2SV_ModStart> = PGTYPES_INTVL_BAD_INTERVAL ; free ( result ) ; return NULL ; } if ( tm2interval ( tm , fsec , result ) != 0 <S2SV_ModEnd> ) { errno <S2SV_ModStart> = PGTYPES_INTVL_BAD_INTERVAL ; <S2SV_ModEnd> free ( result <S2SV_ModStart> NULL ; } <S2SV_ModEnd> errno = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 stmt_ty <S2SV_StartBug> AsyncWith ( asdl_seq * items , asdl_seq * body , int lineno , int col_offset , int <S2SV_EndBug> end_lineno , int end_col_offset , PyArena * arena ) { stmt_ty p ; p = ( stmt_ty ) PyArena_Malloc ( arena , sizeof ( * p ) ) ; if ( ! p ) return NULL ; p -> kind = AsyncWith_kind ; p -> v . AsyncWith . items = items ; p -> v . AsyncWith . body = body ; <S2SV_StartBug> p -> lineno = lineno ; <S2SV_EndBug> p -> col_offset = col_offset ; p -> end_lineno = end_lineno ; p -> end_col_offset = end_col_offset ; return p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * body , string type_comment , <S2SV_ModStart> ; p -> v . AsyncWith . type_comment = type_comment ; p ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11171\n\n```\nCWE-835 static void gsm_xsmp_client_disconnect ( GsmXSMPClient * client ) { if ( client -> priv -> watch_id > 0 ) { g_source_remove ( client -> priv -> watch_id ) ; } if ( client -> priv -> conn != NULL ) { SmsCleanUp ( client -> priv -> conn ) ; } if ( client -> priv -> ice_connection != NULL ) { IceSetShutdownNegotiation ( client -> priv -> ice_connection , FALSE ) ; IceCloseConnection ( client -> priv -> ice_connection ) ; } <S2SV_StartBug> if ( client -> priv -> protocol_timeout > 0 ) { <S2SV_EndBug> g_source_remove ( client -> priv -> protocol_timeout ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16939\n\n```\nCWE-416 static int xfrm_dump_policy ( struct sk_buff * skb , struct netlink_callback * cb ) { struct net * net = sock_net ( skb -> sk ) ; <S2SV_StartBug> struct xfrm_policy_walk * walk = ( struct xfrm_policy_walk * ) & cb -> args [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> struct xfrm_dump_info info ; <S2SV_EndBug> BUILD_BUG_ON ( sizeof ( struct xfrm_policy_walk ) > sizeof ( cb -> args ) - sizeof ( cb -> args [ 0 ] ) ) ; info . in_skb = cb -> skb ; info . out_skb = skb ; info . nlmsg_seq = cb -> nlh -> nlmsg_seq ; info . nlmsg_flags = NLM_F_MULTI ; <S2SV_StartBug> if ( ! cb -> args [ 0 ] ) { <S2SV_EndBug> cb -> args [ 0 ] = 1 ; xfrm_policy_walk_init ( walk , XFRM_POLICY_TYPE_ANY ) ; } ( void ) xfrm_policy_walk ( net , walk , dump_one_policy , & info ) ; return skb -> len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> xfrm_policy_walk * ) <S2SV_ModEnd> cb -> args <S2SV_ModStart> cb -> args <S2SV_ModEnd> ; struct xfrm_dump_info <S2SV_ModStart> struct xfrm_dump_info info <S2SV_ModEnd> ; info . <S2SV_ModStart> = NLM_F_MULTI ; <S2SV_ModEnd> ( void )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr3_leaf_lookup_int ( struct xfs_buf * bp , struct xfs_da_args * args ) { struct xfs_attr_leafblock * leaf ; struct xfs_attr3_icleaf_hdr ichdr ; struct xfs_attr_leaf_entry * entry ; struct xfs_attr_leaf_entry * entries ; struct xfs_attr_leaf_name_local * name_loc ; struct xfs_attr_leaf_name_remote * name_rmt ; xfs_dahash_t hashval ; int probe ; int span ; trace_xfs_attr_leaf_lookup ( args ) ; leaf = bp -> b_addr ; xfs_attr3_leaf_hdr_from_disk ( & ichdr , leaf ) ; entries = xfs_attr3_leaf_entryp ( leaf ) ; ASSERT ( ichdr . count < XFS_LBSIZE ( args -> dp -> i_mount ) / 8 ) ; hashval = args -> hashval ; probe = span = ichdr . count / 2 ; for ( entry = & entries [ probe ] ; span > 4 ; entry = & entries [ probe ] ) { span /= 2 ; if ( be32_to_cpu ( entry -> hashval ) < hashval ) probe += span ; else if ( be32_to_cpu ( entry -> hashval ) > hashval ) probe -= span ; else break ; } ASSERT ( probe >= 0 && ( ! ichdr . count || probe < ichdr . count ) ) ; ASSERT ( span <= 4 || be32_to_cpu ( entry -> hashval ) == hashval ) ; while ( probe > 0 && be32_to_cpu ( entry -> hashval ) >= hashval ) { entry -- ; probe -- ; } while ( probe < ichdr . count && be32_to_cpu ( entry -> hashval ) < hashval ) { entry ++ ; probe ++ ; } if ( probe == ichdr . count || be32_to_cpu ( entry -> hashval ) != hashval ) { args -> index = probe ; return XFS_ERROR ( ENOATTR ) ; } for ( ; probe < ichdr . count && ( be32_to_cpu ( entry -> hashval ) == hashval ) ; entry ++ , probe ++ ) { if ( ( args -> flags & XFS_ATTR_INCOMPLETE ) != ( entry -> flags & XFS_ATTR_INCOMPLETE ) ) { continue ; } if ( entry -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf , probe ) ; if ( name_loc -> namelen != args -> namelen ) continue ; if ( memcmp ( args -> name , name_loc -> nameval , args -> namelen ) != 0 ) continue ; if ( ! xfs_attr_namesp_match ( args -> flags , entry -> flags ) ) continue ; args -> index = probe ; return XFS_ERROR ( EEXIST ) ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf , probe ) ; if ( name_rmt -> namelen != args -> namelen ) continue ; if ( memcmp ( args -> name , name_rmt -> name , args -> namelen ) != 0 ) continue ; if ( ! xfs_attr_namesp_match ( args -> flags , entry -> flags ) ) continue ; args -> index = probe ; <S2SV_StartBug> args -> valuelen = be32_to_cpu ( name_rmt -> valuelen ) ; <S2SV_EndBug> args -> rmtblkno = be32_to_cpu ( name_rmt -> valueblk ) ; args -> rmtblkcnt = xfs_attr3_rmt_blocks ( args -> dp -> i_mount , <S2SV_StartBug> args -> valuelen ) ; <S2SV_EndBug> return XFS_ERROR ( EEXIST ) ; } } args -> index = probe ; return XFS_ERROR ( ENOATTR ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; args -> rmtvaluelen = be32_to_cpu ( name_rmt -> valuelen ) ; args -> rmtblkno <S2SV_ModEnd> = be32_to_cpu ( <S2SV_ModStart> ( name_rmt -> <S2SV_ModEnd> valueblk ) ; <S2SV_ModStart> , args -> rmtvaluelen <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3152\n\n```\nCWE-284 static my_bool get_one_option ( int optid , const struct my_option * opt , char * argument ) { my_bool add_option = TRUE ; switch ( optid ) { case '?' : printf ( \"%s<S2SV_blank><S2SV_blank>Ver<S2SV_blank>%s<S2SV_blank>Distrib<S2SV_blank>%s,<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>(%s)\\\\n\" , my_progname , VER , MYSQL_SERVER_VERSION , SYSTEM_TYPE , MACHINE_TYPE ) ; puts ( ORACLE_WELCOME_COPYRIGHT_NOTICE ( \"2000\" ) ) ; puts ( \"MySQL<S2SV_blank>utility<S2SV_blank>for<S2SV_blank>upgrading<S2SV_blank>databases<S2SV_blank>to<S2SV_blank>new<S2SV_blank>MySQL<S2SV_blank>versions.\\\\n\" ) ; my_print_help ( my_long_options ) ; exit ( 0 ) ; break ; case '#' : DBUG_PUSH ( argument ? argument : default_dbug_option ) ; add_option = FALSE ; debug_check_flag = 1 ; break ; case 'p' : if ( argument == disabled_my_option ) argument = ( char * ) \"\" ; tty_password = 1 ; add_option = FALSE ; if ( argument ) { add_one_option ( & ds_args , opt , argument ) ; while ( * argument ) * argument ++ = 'x' ; tty_password = 0 ; } break ; case 't' : my_stpnmov ( opt_tmpdir , argument , sizeof ( opt_tmpdir ) ) ; add_option = FALSE ; break ; case 'k' : case 'v' : case 'f' : case 's' : case OPT_WRITE_BINLOG : add_option = FALSE ; break ; <S2SV_StartBug> case 'h' : <S2SV_EndBug> case 'W' : case 'P' : case 'S' : case OPT_MYSQL_PROTOCOL : case OPT_SHARED_MEMORY_BASE_NAME : case OPT_PLUGIN_DIR : case OPT_DEFAULT_AUTH : add_one_option ( & conn_args , opt , argument ) ; break ; } if ( add_option ) { add_one_option ( & ds_args , opt , argument ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; break ; # include < sslopt - case . h >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 ssize_t cdf_read_sector ( const cdf_info_t * info , void * buf , size_t offs , size_t len , const cdf_header_t * h , cdf_secid_t id ) { <S2SV_StartBug> assert ( ( size_t ) CDF_SEC_SIZE ( h ) == len ) ; <S2SV_EndBug> <S2SV_StartBug> return cdf_read ( info , ( off_t ) CDF_SEC_POS ( h , id ) , <S2SV_EndBug> ( ( char * ) buf ) + offs , len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ) { size_t ss = <S2SV_ModEnd> CDF_SEC_SIZE ( h <S2SV_ModStart> ( h ) ; size_t pos = CDF_SEC_POS ( h , id ) ; assert ( ss <S2SV_ModStart> ( off_t ) pos , <S2SV_ModEnd> ( ( char\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4098\n\n```\nCWE-119 static long gfs2_fallocate ( struct file * file , int mode , loff_t offset , loff_t len ) { struct inode * inode = file -> f_path . dentry -> d_inode ; struct gfs2_sbd * sdp = GFS2_SB ( inode ) ; struct gfs2_inode * ip = GFS2_I ( inode ) ; unsigned int data_blocks = 0 , ind_blocks = 0 , rblocks ; loff_t bytes , max_bytes ; struct gfs2_alloc * al ; int error ; loff_t bsize_mask = ~ ( ( loff_t ) sdp -> sd_sb . sb_bsize - 1 ) ; loff_t next = ( offset + len - 1 ) >> sdp -> sd_sb . sb_bsize_shift ; <S2SV_StartBug> next = ( next + 1 ) << sdp -> sd_sb . sb_bsize_shift ; <S2SV_EndBug> if ( mode & ~ FALLOC_FL_KEEP_SIZE ) return - EOPNOTSUPP ; offset &= bsize_mask ; len = next - offset ; bytes = sdp -> sd_max_rg_data * sdp -> sd_sb . sb_bsize / 2 ; if ( ! bytes ) bytes = UINT_MAX ; bytes &= bsize_mask ; if ( bytes == 0 ) bytes = sdp -> sd_sb . sb_bsize ; gfs2_holder_init ( ip -> i_gl , LM_ST_EXCLUSIVE , 0 , & ip -> i_gh ) ; error = gfs2_glock_nq ( & ip -> i_gh ) ; if ( unlikely ( error ) ) goto out_uninit ; if ( ! gfs2_write_alloc_required ( ip , offset , len ) ) goto out_unlock ; while ( len > 0 ) { if ( len < bytes ) bytes = len ; al = gfs2_alloc_get ( ip ) ; if ( ! al ) { error = - ENOMEM ; goto out_unlock ; } error = gfs2_quota_lock_check ( ip ) ; if ( error ) goto out_alloc_put ; retry : gfs2_write_calc_reserv ( ip , bytes , & data_blocks , & ind_blocks ) ; al -> al_requested = data_blocks + ind_blocks ; error = gfs2_inplace_reserve ( ip ) ; if ( error ) { if ( error == - ENOSPC && bytes > sdp -> sd_sb . sb_bsize ) { bytes >>= 1 ; bytes &= bsize_mask ; if ( bytes == 0 ) bytes = sdp -> sd_sb . sb_bsize ; goto retry ; } goto out_qunlock ; } max_bytes = bytes ; <S2SV_StartBug> calc_max_reserv ( ip , len , & max_bytes , & data_blocks , & ind_blocks ) ; <S2SV_EndBug> al -> al_requested = data_blocks + ind_blocks ; rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA + RES_RG_HDR + gfs2_rg_blocks ( ip ) ; if ( gfs2_is_jdata ( ip ) ) rblocks += data_blocks ? data_blocks : 1 ; error = gfs2_trans_begin ( sdp , rblocks , PAGE_CACHE_SIZE / sdp -> sd_sb . sb_bsize ) ; if ( error ) goto out_trans_fail ; error = fallocate_chunk ( inode , offset , max_bytes , mode ) ; gfs2_trans_end ( sdp ) ; if ( error ) goto out_trans_fail ; len -= max_bytes ; offset += max_bytes ; gfs2_inplace_release ( ip ) ; gfs2_quota_unlock ( ip ) ; gfs2_alloc_put ( ip ) ; } goto out_unlock ; out_trans_fail : gfs2_inplace_release ( ip ) ; out_qunlock : gfs2_quota_unlock ( ip ) ; out_alloc_put : gfs2_alloc_put ( ip ) ; out_unlock : gfs2_glock_dq ( & ip -> i_gh ) ; out_uninit : gfs2_holder_uninit ( & ip -> i_gh ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . sb_bsize_shift ; loff_t max_chunk_size = UINT_MAX & bsize_mask ; <S2SV_ModStart> ( ip , ( len > max_chunk_size ) ? max_chunk_size : len , <S2SV_ModEnd> & max_bytes ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16058\n\n```\nCWE-119 static int key_verify ( pam_handle_t * pamh , int flags , PKCS11_KEY * authkey ) { int ok = 0 ; unsigned char challenge [ 30 ] ; <S2SV_StartBug> unsigned char signature [ 256 ] ; <S2SV_EndBug> <S2SV_StartBug> unsigned int siglen = sizeof signature ; <S2SV_EndBug> const EVP_MD * md = EVP_sha1 ( ) ; EVP_MD_CTX * md_ctx = EVP_MD_CTX_new ( ) ; EVP_PKEY * privkey = PKCS11_get_private_key ( authkey ) ; EVP_PKEY * pubkey = PKCS11_get_public_key ( authkey ) ; <S2SV_StartBug> if ( 1 != randomize ( pamh , challenge , sizeof challenge ) ) { <S2SV_EndBug> goto err ; } if ( NULL == pubkey || NULL == privkey || NULL == md_ctx || NULL == md || ! EVP_SignInit ( md_ctx , md ) || ! EVP_SignUpdate ( md_ctx , challenge , sizeof challenge ) || ! EVP_SignFinal ( md_ctx , signature , & siglen , privkey ) || ! EVP_MD_CTX_reset ( md_ctx ) || ! EVP_VerifyInit ( md_ctx , md ) || ! EVP_VerifyUpdate ( md_ctx , challenge , sizeof challenge ) || 1 != EVP_VerifyFinal ( md_ctx , signature , siglen , pubkey ) ) { pam_syslog ( pamh , LOG_DEBUG , \"Error<S2SV_blank>verifying<S2SV_blank>key:<S2SV_blank>%s\\\\n\" , ERR_reason_error_string ( ERR_get_error ( ) ) ) ; prompt ( flags , pamh , PAM_ERROR_MSG , NULL , _ ( \"Error<S2SV_blank>verifying<S2SV_blank>key\" ) ) ; goto err ; } ok = 1 ; <S2SV_StartBug> err : <S2SV_EndBug> if ( NULL != pubkey ) EVP_PKEY_free ( pubkey ) ; if ( NULL != privkey ) EVP_PKEY_free ( privkey ) ; if ( NULL != md_ctx ) { EVP_MD_CTX_free ( md_ctx ) ; } return ok ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned char * signature = NULL <S2SV_ModEnd> ; unsigned int <S2SV_ModStart> unsigned int siglen <S2SV_ModEnd> ; const EVP_MD <S2SV_ModStart> ; if ( NULL == privkey ) goto err ; siglen = EVP_PKEY_size ( privkey ) ; if ( siglen <= 0 ) goto err ; signature = malloc ( siglen ) ; if ( NULL == signature ) goto err ; if ( <S2SV_ModStart> ; err : free ( signature ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-4250\n\n```\nCWE-399 SYSCALL_DEFINE1 ( inotify_init1 , int , flags ) { struct fsnotify_group * group ; struct user_struct * user ; int ret ; BUILD_BUG_ON ( IN_CLOEXEC != O_CLOEXEC ) ; BUILD_BUG_ON ( IN_NONBLOCK != O_NONBLOCK ) ; if ( flags & ~ ( IN_CLOEXEC | IN_NONBLOCK ) ) return - EINVAL ; user = get_current_user ( ) ; if ( unlikely ( atomic_read ( & user -> inotify_devs ) >= inotify_max_user_instances ) ) { ret = - EMFILE ; goto out_free_uid ; } group = inotify_new_group ( user , inotify_max_queued_events ) ; if ( IS_ERR ( group ) ) { ret = PTR_ERR ( group ) ; goto out_free_uid ; } atomic_inc ( & user -> inotify_devs ) ; ret = anon_inode_getfd ( \"inotify\" , & inotify_fops , group , O_RDONLY | flags ) ; if ( ret >= 0 ) return ret ; <S2SV_StartBug> atomic_dec ( & user -> inotify_devs ) ; <S2SV_EndBug> out_free_uid : free_uid ( user ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ret ; fsnotify_put_group ( group ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16528\n\n```\nCWE-416 static int snd_seq_device_dev_free ( struct snd_device * device ) { struct snd_seq_device * dev = device -> device_data ; <S2SV_StartBug> put_device ( & dev -> dev ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> device_data ; cancel_autoload_drivers ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6327\n\n```\nCWE-476 static void srpt_handle_tsk_mgmt ( struct srpt_rdma_ch * ch , struct srpt_recv_ioctx * recv_ioctx , struct srpt_send_ioctx * send_ioctx ) { struct srp_tsk_mgmt * srp_tsk ; struct se_cmd * cmd ; struct se_session * sess = ch -> sess ; uint64_t unpacked_lun ; <S2SV_StartBug> uint32_t tag = 0 ; <S2SV_EndBug> int tcm_tmr ; int rc ; BUG_ON ( ! send_ioctx ) ; srp_tsk = recv_ioctx -> ioctx . buf ; cmd = & send_ioctx -> cmd ; pr_debug ( \"recv<S2SV_blank>tsk_mgmt<S2SV_blank>fn<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>task_tag<S2SV_blank>%lld<S2SV_blank>and<S2SV_blank>cmd<S2SV_blank>tag<S2SV_blank>%lld\" \"<S2SV_blank>cm_id<S2SV_blank>%p<S2SV_blank>sess<S2SV_blank>%p\\\\n\" , srp_tsk -> tsk_mgmt_func , srp_tsk -> task_tag , srp_tsk -> tag , ch -> cm_id , ch -> sess ) ; srpt_set_cmd_state ( send_ioctx , SRPT_STATE_MGMT ) ; send_ioctx -> cmd . tag = srp_tsk -> tag ; tcm_tmr = srp_tmr_to_tcm ( srp_tsk -> tsk_mgmt_func ) ; <S2SV_StartBug> if ( tcm_tmr < 0 ) { <S2SV_EndBug> send_ioctx -> cmd . se_tmr_req -> response = TMR_TASK_MGMT_FUNCTION_NOT_SUPPORTED ; goto fail ; } unpacked_lun = srpt_unpack_lun ( ( uint8_t * ) & srp_tsk -> lun , sizeof ( srp_tsk -> lun ) ) ; if ( srp_tsk -> tsk_mgmt_func == SRP_TSK_ABORT_TASK ) { <S2SV_StartBug> rc = srpt_rx_mgmt_fn_tag ( send_ioctx , srp_tsk -> task_tag ) ; <S2SV_EndBug> if ( rc < 0 ) { send_ioctx -> cmd . se_tmr_req -> response = TMR_TASK_DOES_NOT_EXIST ; goto fail ; } tag = srp_tsk -> task_tag ; } rc = target_submit_tmr ( & send_ioctx -> cmd , sess , NULL , unpacked_lun , srp_tsk , tcm_tmr , GFP_KERNEL , tag , TARGET_SCF_ACK_KREF ) ; if ( rc != 0 ) { send_ioctx -> cmd . se_tmr_req -> response = TMR_FUNCTION_REJECTED ; goto fail ; } return ; fail : transport_send_check_condition_and_sense ( cmd , 0 , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint64_t unpacked_lun ; <S2SV_ModEnd> int tcm_tmr ; <S2SV_ModStart> tsk_mgmt_func ) ; unpacked_lun = srpt_unpack_lun ( ( uint8_t * ) & srp_tsk -> lun , sizeof ( srp_tsk -> lun ) ) ; rc = target_submit_tmr ( & send_ioctx -> cmd , sess , NULL , unpacked_lun , srp_tsk , tcm_tmr , GFP_KERNEL <S2SV_ModEnd> , srp_tsk -> <S2SV_ModStart> srp_tsk -> task_tag <S2SV_ModEnd> , TARGET_SCF_ACK_KREF )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16718\n\n```\nCWE-78 static char * __filterQuotedShell ( const char * arg ) { r_return_val_if_fail ( arg , NULL ) ; char * a = malloc ( strlen ( arg ) + 1 ) ; if ( ! a ) { return NULL ; } char * b = a ; while ( * arg ) { switch ( * arg ) { case '<S2SV_blank>' : case '=' : <S2SV_StartBug> case '\\\\r' : <S2SV_EndBug> case '\\\\n' : break ; default : * b ++ = * arg ; break ; } arg ++ ; } * b = 0 ; return a ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> '=' : case \\'\"\\' : case '\\\\\\\\' : case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6198\n\n```\nCWE-59 void w3m_exit ( int i ) { # ifdef USE_MIGEMO init_migemo ( ) ; # endif stopDownload ( ) ; deleteFiles ( ) ; # ifdef USE_SSL free_ssl_ctx ( ) ; # endif disconnectFTP ( ) ; # ifdef USE_NNTP disconnectNews ( ) ; # endif # ifdef __MINGW32_VERSION WSACleanup ( ) ; # endif <S2SV_StartBug> exit ( i ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif # ifdef HAVE_MKDTEMP if ( no_rc_dir && tmp_dir != rc_dir ) if ( rmdir ( tmp_dir ) != 0 ) { fprintf ( stderr , \"Can\\'t<S2SV_blank>remove<S2SV_blank>temporary<S2SV_blank>directory<S2SV_blank>(%s)!\\\\n\" , tmp_dir ) ; exit ( 1 ) ; } # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void sum_2_variances ( const var * a , const var * b , var * r ) { <S2SV_EndBug> fill_variance ( a -> sum_square_error + b -> sum_square_error , <S2SV_StartBug> a -> sum_error + b -> sum_error , a -> count + b -> count , r ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> r ) { assert ( a -> log2_count == b -> log2_count ) ; <S2SV_ModStart> , a -> log2_count + 1 <S2SV_ModEnd> , r )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9084\n\n```\nCWE-190 static int vfio_msi_enable ( struct vfio_pci_device * vdev , int nvec , bool msix ) { struct pci_dev * pdev = vdev -> pdev ; unsigned int flag = msix ? PCI_IRQ_MSIX : PCI_IRQ_MSI ; int ret ; if ( ! is_irq_none ( vdev ) ) return - EINVAL ; <S2SV_StartBug> vdev -> ctx = kzalloc ( nvec * sizeof ( struct vfio_pci_irq_ctx ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! vdev -> ctx ) return - ENOMEM ; ret = pci_alloc_irq_vectors ( pdev , 1 , nvec , flag ) ; if ( ret < nvec ) { if ( ret > 0 ) pci_free_irq_vectors ( pdev ) ; kfree ( vdev -> ctx ) ; return ret ; } vdev -> num_ctx = nvec ; vdev -> irq_type = msix ? VFIO_PCI_MSIX_IRQ_INDEX : VFIO_PCI_MSI_IRQ_INDEX ; if ( ! msix ) { vdev -> msi_qmax = fls ( nvec * 2 - 1 ) - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ctx = kcalloc ( nvec , <S2SV_ModEnd> sizeof ( struct\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11377\n\n```\nCWE-125 static OPCODE_DESC * avr_op_analyze ( RAnal * anal , RAnalOp * op , ut64 addr , const ut8 * buf , int len , CPU_MODEL * cpu ) { <S2SV_StartBug> OPCODE_DESC * opcode_desc ; <S2SV_EndBug> ut16 ins = ( buf [ 1 ] << 8 ) | buf [ 0 ] ; int fail ; char * t ; memset ( op , 0 , sizeof ( RAnalOp ) ) ; op -> ptr = UT64_MAX ; op -> val = UT64_MAX ; op -> jump = UT64_MAX ; r_strbuf_init ( & op -> esil ) ; for ( opcode_desc = opcodes ; opcode_desc -> handler ; opcode_desc ++ ) { if ( ( ins & opcode_desc -> mask ) == opcode_desc -> selector ) { fail = 0 ; op -> cycles = opcode_desc -> cycles ; op -> size = opcode_desc -> size ; op -> type = opcode_desc -> type ; op -> jump = UT64_MAX ; op -> fail = UT64_MAX ; op -> addr = addr ; r_strbuf_setf ( & op -> esil , \"\" ) ; opcode_desc -> handler ( anal , op , buf , len , & fail , cpu ) ; if ( fail ) { goto INVALID_OP ; } if ( op -> cycles <= 0 ) { opcode_desc -> cycles = 2 ; } op -> nopcode = ( op -> type == R_ANAL_OP_TYPE_UNK ) ; t = r_strbuf_get ( & op -> esil ) ; if ( t && strlen ( t ) > 1 ) { t += strlen ( t ) - 1 ; if ( * t == ',' ) { * t = '\\\\0' ; } } return opcode_desc ; } } if ( ( ins & 0xff00 ) == 0xff00 && ( ins & 0xf ) > 7 ) { goto INVALID_OP ; } INVALID_OP : op -> family = R_ANAL_OP_FAMILY_UNKNOWN ; op -> type = R_ANAL_OP_TYPE_UNK ; op -> addr = addr ; op -> fail = UT64_MAX ; op -> jump = UT64_MAX ; op -> ptr = UT64_MAX ; op -> val = UT64_MAX ; op -> nopcode = 1 ; op -> cycles = 1 ; op -> size = 2 ; r_strbuf_set ( & op -> esil , \"1,$\" ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * opcode_desc ; if ( len < 2 ) { return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000050\n\n```\nCWE-119 static void decode_residue ( vorb * f , float * residue_buffers [ ] , int ch , int n , int rn , uint8 * do_not_decode ) { int i , j , pass ; Residue * r = f -> residue_config + rn ; int rtype = f -> residue_types [ rn ] ; int c = r -> classbook ; int classwords = f -> codebooks [ c ] . dimensions ; <S2SV_StartBug> int n_read = r -> end - r -> begin ; <S2SV_EndBug> int part_read = n_read / r -> part_size ; int temp_alloc_point = temp_alloc_save ( f ) ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE uint8 * * * part_classdata = ( uint8 * * * ) temp_block_array ( f , f -> channels , part_read * sizeof ( * * part_classdata ) ) ; # else int * * classifications = ( int * * ) temp_block_array ( f , f -> channels , part_read * sizeof ( * * classifications ) ) ; # endif CHECK ( f ) ; for ( i = 0 ; i < ch ; ++ i ) if ( ! do_not_decode [ i ] ) memset ( residue_buffers [ i ] , 0 , sizeof ( float ) * n ) ; if ( rtype == 2 && ch != 1 ) { for ( j = 0 ; j < ch ; ++ j ) if ( ! do_not_decode [ j ] ) break ; if ( j == ch ) goto done ; for ( pass = 0 ; pass < 8 ; ++ pass ) { int pcount = 0 , class_set = 0 ; if ( ch == 2 ) { while ( pcount < part_read ) { int z = r -> begin + pcount * r -> part_size ; int c_inter = ( z & 1 ) , p_inter = z >> 1 ; if ( pass == 0 ) { Codebook * c = f -> codebooks + r -> classbook ; int q ; DECODE ( q , f , c ) ; if ( q == EOP ) goto done ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE part_classdata [ 0 ] [ class_set ] = r -> classdata [ q ] ; # else for ( i = classwords - 1 ; i >= 0 ; -- i ) { classifications [ 0 ] [ i + pcount ] = q % r -> classifications ; q /= r -> classifications ; } # endif } for ( i = 0 ; i < classwords && pcount < part_read ; ++ i , ++ pcount ) { int z = r -> begin + pcount * r -> part_size ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE int c = part_classdata [ 0 ] [ class_set ] [ i ] ; # else int c = classifications [ 0 ] [ pcount ] ; # endif int b = r -> residue_books [ c ] [ pass ] ; if ( b >= 0 ) { Codebook * book = f -> codebooks + b ; # ifdef STB_VORBIS_DIVIDES_IN_CODEBOOK if ( ! codebook_decode_deinterleave_repeat ( f , book , residue_buffers , ch , & c_inter , & p_inter , n , r -> part_size ) ) goto done ; # else if ( ! codebook_decode_deinterleave_repeat ( f , book , residue_buffers , ch , & c_inter , & p_inter , n , r -> part_size ) ) goto done ; # endif } else { z += r -> part_size ; c_inter = z & 1 ; p_inter = z >> 1 ; } } # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE ++ class_set ; # endif } } else if ( ch == 1 ) { while ( pcount < part_read ) { int z = r -> begin + pcount * r -> part_size ; int c_inter = 0 , p_inter = z ; if ( pass == 0 ) { Codebook * c = f -> codebooks + r -> classbook ; int q ; DECODE ( q , f , c ) ; if ( q == EOP ) goto done ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE part_classdata [ 0 ] [ class_set ] = r -> classdata [ q ] ; # else for ( i = classwords - 1 ; i >= 0 ; -- i ) { classifications [ 0 ] [ i + pcount ] = q % r -> classifications ; q /= r -> classifications ; } # endif } for ( i = 0 ; i < classwords && pcount < part_read ; ++ i , ++ pcount ) { int z = r -> begin + pcount * r -> part_size ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE int c = part_classdata [ 0 ] [ class_set ] [ i ] ; # else int c = classifications [ 0 ] [ pcount ] ; # endif int b = r -> residue_books [ c ] [ pass ] ; if ( b >= 0 ) { Codebook * book = f -> codebooks + b ; if ( ! codebook_decode_deinterleave_repeat ( f , book , residue_buffers , ch , & c_inter , & p_inter , n , r -> part_size ) ) goto done ; } else { z += r -> part_size ; c_inter = 0 ; p_inter = z ; } } # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE ++ class_set ; # endif } } else { while ( pcount < part_read ) { int z = r -> begin + pcount * r -> part_size ; int c_inter = z % ch , p_inter = z / ch ; if ( pass == 0 ) { Codebook * c = f -> codebooks + r -> classbook ; int q ; DECODE ( q , f , c ) ; if ( q == EOP ) goto done ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE part_classdata [ 0 ] [ class_set ] = r -> classdata [ q ] ; # else for ( i = classwords - 1 ; i >= 0 ; -- i ) { classifications [ 0 ] [ i + pcount ] = q % r -> classifications ; q /= r -> classifications ; } # endif } for ( i = 0 ; i < classwords && pcount < part_read ; ++ i , ++ pcount ) { int z = r -> begin + pcount * r -> part_size ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE int c = part_classdata [ 0 ] [ class_set ] [ i ] ; # else int c = classifications [ 0 ] [ pcount ] ; # endif int b = r -> residue_books [ c ] [ pass ] ; if ( b >= 0 ) { Codebook * book = f -> codebooks + b ; if ( ! codebook_decode_deinterleave_repeat ( f , book , residue_buffers , ch , & c_inter , & p_inter , n , r -> part_size ) ) goto done ; } else { z += r -> part_size ; c_inter = z % ch ; p_inter = z / ch ; } } # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE ++ class_set ; # endif } } } goto done ; } CHECK ( f ) ; for ( pass = 0 ; pass < 8 ; ++ pass ) { int pcount = 0 , class_set = 0 ; while ( pcount < part_read ) { if ( pass == 0 ) { for ( j = 0 ; j < ch ; ++ j ) { if ( ! do_not_decode [ j ] ) { Codebook * c = f -> codebooks + r -> classbook ; int temp ; DECODE ( temp , f , c ) ; if ( temp == EOP ) goto done ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE part_classdata [ j ] [ class_set ] = r -> classdata [ temp ] ; # else for ( i = classwords - 1 ; i >= 0 ; -- i ) { classifications [ j ] [ i + pcount ] = temp % r -> classifications ; temp /= r -> classifications ; } # endif } } } for ( i = 0 ; i < classwords && pcount < part_read ; ++ i , ++ pcount ) { for ( j = 0 ; j < ch ; ++ j ) { if ( ! do_not_decode [ j ] ) { # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE int c = part_classdata [ j ] [ class_set ] [ i ] ; # else int c = classifications [ j ] [ pcount ] ; # endif int b = r -> residue_books [ c ] [ pass ] ; if ( b >= 0 ) { float * target = residue_buffers [ j ] ; int offset = r -> begin + pcount * r -> part_size ; int n = r -> part_size ; Codebook * book = f -> codebooks + b ; if ( ! residue_decode ( f , book , target , offset , n , rtype ) ) goto done ; } } } } # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE ++ class_set ; # endif } } done : CHECK ( f ) ; # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE temp_free ( f , part_classdata ) ; # else temp_free ( f , classifications ) ; # endif temp_alloc_restore ( f , temp_alloc_point ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . dimensions ; unsigned int actual_size = rtype == 2 ? n * 2 : n ; unsigned int limit_r_begin = ( r -> begin < actual_size ? r -> begin : actual_size ) ; unsigned int limit_r_end = ( r -> end < actual_size ? r -> end : actual_size ) ; <S2SV_ModStart> int n_read = limit_r_end - limit_r_begin <S2SV_ModEnd> ; int part_read\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8950\n\n```\nCWE-200 static void * __alloc_from_pool ( size_t size , struct page * * ret_page , gfp_t flags ) { unsigned long val ; void * ptr = NULL ; if ( ! atomic_pool ) { WARN ( 1 , \"coherent<S2SV_blank>pool<S2SV_blank>not<S2SV_blank>initialised!\\\\n\" ) ; return NULL ; } val = gen_pool_alloc ( atomic_pool , size ) ; if ( val ) { phys_addr_t phys = gen_pool_virt_to_phys ( atomic_pool , val ) ; * ret_page = phys_to_page ( phys ) ; ptr = ( void * ) val ; <S2SV_StartBug> if ( flags & __GFP_ZERO ) <S2SV_EndBug> memset ( ptr , 0 , size ) ; } return ptr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) val ; <S2SV_ModEnd> memset ( ptr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16534\n\n```\nCWE-119 int cdc_parse_cdc_header ( struct usb_cdc_parsed_header * hdr , struct usb_interface * intf , u8 * buffer , int buflen ) { struct usb_cdc_union_desc * union_header = NULL ; struct usb_cdc_header_desc * header = NULL ; struct usb_cdc_ether_desc * ether = NULL ; struct usb_cdc_mdlm_detail_desc * detail = NULL ; struct usb_cdc_mdlm_desc * desc = NULL ; unsigned int elength ; int cnt = 0 ; memset ( hdr , 0x00 , sizeof ( struct usb_cdc_parsed_header ) ) ; hdr -> phonet_magic_present = false ; while ( buflen > 0 ) { elength = buffer [ 0 ] ; if ( ! elength ) { dev_err ( & intf -> dev , \"skipping<S2SV_blank>garbage<S2SV_blank>byte\\\\n\" ) ; elength = 1 ; <S2SV_StartBug> goto next_desc ; <S2SV_EndBug> } if ( buffer [ 1 ] != USB_DT_CS_INTERFACE ) { dev_err ( & intf -> dev , \"skipping<S2SV_blank>garbage\\\\n\" ) ; goto next_desc ; } switch ( buffer [ 2 ] ) { case USB_CDC_UNION_TYPE : if ( elength < sizeof ( struct usb_cdc_union_desc ) ) goto next_desc ; if ( union_header ) { dev_err ( & intf -> dev , \"More<S2SV_blank>than<S2SV_blank>one<S2SV_blank>union<S2SV_blank>descriptor,<S2SV_blank>skipping<S2SV_blank>...\\\\n\" ) ; goto next_desc ; } union_header = ( struct usb_cdc_union_desc * ) buffer ; break ; case USB_CDC_COUNTRY_TYPE : if ( elength < sizeof ( struct usb_cdc_country_functional_desc ) ) goto next_desc ; hdr -> usb_cdc_country_functional_desc = ( struct usb_cdc_country_functional_desc * ) buffer ; break ; case USB_CDC_HEADER_TYPE : if ( elength != sizeof ( struct usb_cdc_header_desc ) ) goto next_desc ; if ( header ) return - EINVAL ; header = ( struct usb_cdc_header_desc * ) buffer ; break ; case USB_CDC_ACM_TYPE : if ( elength < sizeof ( struct usb_cdc_acm_descriptor ) ) goto next_desc ; hdr -> usb_cdc_acm_descriptor = ( struct usb_cdc_acm_descriptor * ) buffer ; break ; case USB_CDC_ETHERNET_TYPE : if ( elength != sizeof ( struct usb_cdc_ether_desc ) ) goto next_desc ; if ( ether ) return - EINVAL ; ether = ( struct usb_cdc_ether_desc * ) buffer ; break ; case USB_CDC_CALL_MANAGEMENT_TYPE : if ( elength < sizeof ( struct usb_cdc_call_mgmt_descriptor ) ) goto next_desc ; hdr -> usb_cdc_call_mgmt_descriptor = ( struct usb_cdc_call_mgmt_descriptor * ) buffer ; break ; case USB_CDC_DMM_TYPE : if ( elength < sizeof ( struct usb_cdc_dmm_desc ) ) goto next_desc ; hdr -> usb_cdc_dmm_desc = ( struct usb_cdc_dmm_desc * ) buffer ; break ; case USB_CDC_MDLM_TYPE : if ( elength < sizeof ( struct usb_cdc_mdlm_desc * ) ) goto next_desc ; if ( desc ) return - EINVAL ; desc = ( struct usb_cdc_mdlm_desc * ) buffer ; break ; case USB_CDC_MDLM_DETAIL_TYPE : if ( elength < sizeof ( struct usb_cdc_mdlm_detail_desc * ) ) goto next_desc ; if ( detail ) return - EINVAL ; detail = ( struct usb_cdc_mdlm_detail_desc * ) buffer ; break ; case USB_CDC_NCM_TYPE : if ( elength < sizeof ( struct usb_cdc_ncm_desc ) ) goto next_desc ; hdr -> usb_cdc_ncm_desc = ( struct usb_cdc_ncm_desc * ) buffer ; break ; case USB_CDC_MBIM_TYPE : if ( elength < sizeof ( struct usb_cdc_mbim_desc ) ) goto next_desc ; hdr -> usb_cdc_mbim_desc = ( struct usb_cdc_mbim_desc * ) buffer ; break ; case USB_CDC_MBIM_EXTENDED_TYPE : if ( elength < sizeof ( struct usb_cdc_mbim_extended_desc ) ) break ; hdr -> usb_cdc_mbim_extended_desc = ( struct usb_cdc_mbim_extended_desc * ) buffer ; break ; case CDC_PHONET_MAGIC_NUMBER : hdr -> phonet_magic_present = true ; break ; default : dev_dbg ( & intf -> dev , \"Ignoring<S2SV_blank>descriptor:<S2SV_blank>type<S2SV_blank>%02x,<S2SV_blank>length<S2SV_blank>%ud\\\\n\" , buffer [ 2 ] , elength ) ; goto next_desc ; } cnt ++ ; next_desc : buflen -= elength ; buffer += elength ; } hdr -> usb_cdc_union_desc = union_header ; hdr -> usb_cdc_header_desc = header ; hdr -> usb_cdc_mdlm_detail_desc = detail ; hdr -> usb_cdc_mdlm_desc = desc ; hdr -> usb_cdc_ether_desc = ether ; return cnt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; goto next_desc ; } if ( ( buflen < elength ) || ( elength < 3 ) ) { dev_err ( & intf -> dev , \"invalid<S2SV_blank>descriptor<S2SV_blank>buffer<S2SV_blank>length\\\\n\" ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int pn_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct sk_buff * skb = NULL ; struct sockaddr_pn sa ; int rval = - EOPNOTSUPP ; int copylen ; if ( flags & ~ ( MSG_PEEK | MSG_TRUNC | MSG_DONTWAIT | MSG_NOSIGNAL | MSG_CMSG_COMPAT ) ) <S2SV_StartBug> goto out_nofree ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( sa ) ; skb = skb_recv_datagram ( sk , flags , noblock , & rval ) ; if ( skb == NULL ) goto out_nofree ; pn_skb_get_src_sockaddr ( skb , & sa ) ; copylen = skb -> len ; if ( len < copylen ) { msg -> msg_flags |= MSG_TRUNC ; copylen = len ; } rval = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copylen ) ; if ( rval ) { rval = - EFAULT ; goto out ; } rval = ( flags & MSG_TRUNC ) ? skb -> len : copylen ; <S2SV_StartBug> if ( msg -> msg_name != NULL ) <S2SV_EndBug> <S2SV_StartBug> memcpy ( msg -> msg_name , & sa , sizeof ( struct sockaddr_pn ) ) ; <S2SV_EndBug> out : skb_free_datagram ( sk , skb ) ; out_nofree : return rval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto out_nofree <S2SV_ModEnd> ; skb = <S2SV_ModStart> != NULL ) { <S2SV_ModStart> , sizeof ( sa ) ) ; * addr_len = sizeof ( sa ) ; } <S2SV_ModEnd> out : skb_free_datagram\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2347\n\n```\nCWE-190 static uint8_t * extend_raw_data ( LHAFileHeader * * header , LHAInputStream * stream , size_t nbytes ) { LHAFileHeader * new_header ; size_t new_raw_len ; <S2SV_StartBug> uint8_t * result ; <S2SV_EndBug> new_raw_len = RAW_DATA_LEN ( header ) + nbytes ; new_header = realloc ( * header , sizeof ( LHAFileHeader ) + new_raw_len ) ; if ( new_header == NULL ) { return NULL ; } * header = new_header ; new_header -> raw_data = ( uint8_t * ) ( new_header + 1 ) ; result = new_header -> raw_data + new_header -> raw_data_len ; if ( ! lha_input_stream_read ( stream , result , nbytes ) ) { return NULL ; } new_header -> raw_data_len = new_raw_len ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * result ; if ( nbytes > LEVEL_3_MAX_HEADER_LEN ) { return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11470\n\n```\nCWE-400 static Image * ReadCINImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define MonoColorType 1 # define RGBColorType 3 char property [ MagickPathExtent ] ; CINInfo cin ; const unsigned char * pixels ; Image * image ; MagickBooleanType status ; MagickOffsetType offset ; QuantumInfo * quantum_info ; QuantumType quantum_type ; register ssize_t i ; register Quantum * q ; size_t length ; ssize_t count , y ; unsigned char magick [ 4 ] ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } offset = 0 ; count = ReadBlob ( image , 4 , magick ) ; offset += count ; if ( ( count != 4 ) || ( ( LocaleNCompare ( ( char * ) magick , \"\\\\200\\\\052\\\\137\\\\327\" , 4 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; memset ( & cin , 0 , sizeof ( cin ) ) ; image -> endian = ( magick [ 0 ] == 0x80 ) && ( magick [ 1 ] == 0x2a ) && ( magick [ 2 ] == 0x5f ) && ( magick [ 3 ] == 0xd7 ) ? MSBEndian : LSBEndian ; cin . file . image_offset = ReadBlobLong ( image ) ; offset += 4 ; cin . file . generic_length = ReadBlobLong ( image ) ; offset += 4 ; cin . file . industry_length = ReadBlobLong ( image ) ; offset += 4 ; cin . file . user_length = ReadBlobLong ( image ) ; offset += 4 ; cin . file . file_size = ReadBlobLong ( image ) ; offset += 4 ; offset += ReadBlob ( image , sizeof ( cin . file . version ) , ( unsigned char * ) cin . file . version ) ; ( void ) CopyMagickString ( property , cin . file . version , sizeof ( cin . file . version ) ) ; ( void ) SetImageProperty ( image , \"dpx:file.version\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . file . filename ) , ( unsigned char * ) cin . file . filename ) ; ( void ) CopyMagickString ( property , cin . file . filename , sizeof ( cin . file . filename ) ) ; ( void ) SetImageProperty ( image , \"dpx:file.filename\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . file . create_date ) , ( unsigned char * ) cin . file . create_date ) ; ( void ) CopyMagickString ( property , cin . file . create_date , sizeof ( cin . file . create_date ) ) ; ( void ) SetImageProperty ( image , \"dpx:file.create_date\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . file . create_time ) , ( unsigned char * ) cin . file . create_time ) ; ( void ) CopyMagickString ( property , cin . file . create_time , sizeof ( cin . file . create_time ) ) ; ( void ) SetImageProperty ( image , \"dpx:file.create_time\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . file . reserve ) , ( unsigned char * ) cin . file . reserve ) ; cin . image . orientation = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; if ( cin . image . orientation != ( unsigned char ) ( ~ 0 ) ) ( void ) FormatImageProperty ( image , \"dpx:image.orientation\" , \"%d\" , cin . image . orientation ) ; switch ( cin . image . orientation ) { default : case 0 : image -> orientation = TopLeftOrientation ; break ; case 1 : image -> orientation = TopRightOrientation ; break ; case 2 : image -> orientation = BottomLeftOrientation ; break ; case 3 : image -> orientation = BottomRightOrientation ; break ; case 4 : image -> orientation = LeftTopOrientation ; break ; case 5 : image -> orientation = RightTopOrientation ; break ; case 6 : image -> orientation = LeftBottomOrientation ; break ; case 7 : image -> orientation = RightBottomOrientation ; break ; } cin . image . number_channels = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; offset += ReadBlob ( image , sizeof ( cin . image . reserve1 ) , ( unsigned char * ) cin . image . reserve1 ) ; for ( i = 0 ; i < 8 ; i ++ ) { cin . image . channel [ i ] . designator [ 0 ] = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . image . channel [ i ] . designator [ 1 ] = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . image . channel [ i ] . bits_per_pixel = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . image . channel [ i ] . reserve = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . image . channel [ i ] . pixels_per_line = ReadBlobLong ( image ) ; offset += 4 ; cin . image . channel [ i ] . lines_per_image = ReadBlobLong ( image ) ; offset += 4 ; cin . image . channel [ i ] . min_data = ReadBlobFloat ( image ) ; offset += 4 ; cin . image . channel [ i ] . min_quantity = ReadBlobFloat ( image ) ; offset += 4 ; cin . image . channel [ i ] . max_data = ReadBlobFloat ( image ) ; offset += 4 ; cin . image . channel [ i ] . max_quantity = ReadBlobFloat ( image ) ; offset += 4 ; } cin . image . white_point [ 0 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . white_point [ 0 ] ) != MagickFalse ) image -> chromaticity . white_point . x = cin . image . white_point [ 0 ] ; cin . image . white_point [ 1 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . white_point [ 1 ] ) != MagickFalse ) image -> chromaticity . white_point . y = cin . image . white_point [ 1 ] ; cin . image . red_primary_chromaticity [ 0 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . red_primary_chromaticity [ 0 ] ) != MagickFalse ) image -> chromaticity . red_primary . x = cin . image . red_primary_chromaticity [ 0 ] ; cin . image . red_primary_chromaticity [ 1 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . red_primary_chromaticity [ 1 ] ) != MagickFalse ) image -> chromaticity . red_primary . y = cin . image . red_primary_chromaticity [ 1 ] ; cin . image . green_primary_chromaticity [ 0 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . green_primary_chromaticity [ 0 ] ) != MagickFalse ) image -> chromaticity . red_primary . x = cin . image . green_primary_chromaticity [ 0 ] ; cin . image . green_primary_chromaticity [ 1 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . green_primary_chromaticity [ 1 ] ) != MagickFalse ) image -> chromaticity . green_primary . y = cin . image . green_primary_chromaticity [ 1 ] ; cin . image . blue_primary_chromaticity [ 0 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . blue_primary_chromaticity [ 0 ] ) != MagickFalse ) image -> chromaticity . blue_primary . x = cin . image . blue_primary_chromaticity [ 0 ] ; cin . image . blue_primary_chromaticity [ 1 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . blue_primary_chromaticity [ 1 ] ) != MagickFalse ) image -> chromaticity . blue_primary . y = cin . image . blue_primary_chromaticity [ 1 ] ; offset += ReadBlob ( image , sizeof ( cin . image . label ) , ( unsigned char * ) cin . image . label ) ; ( void ) CopyMagickString ( property , cin . image . label , sizeof ( cin . image . label ) ) ; ( void ) SetImageProperty ( image , \"dpx:image.label\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . image . reserve ) , ( unsigned char * ) cin . image . reserve ) ; cin . data_format . interleave = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . data_format . packing = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . data_format . sign = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . data_format . sense = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . data_format . line_pad = ReadBlobLong ( image ) ; offset += 4 ; cin . data_format . channel_pad = ReadBlobLong ( image ) ; offset += 4 ; offset += ReadBlob ( image , sizeof ( cin . data_format . reserve ) , ( unsigned char * ) cin . data_format . reserve ) ; cin . origination . x_offset = ReadBlobSignedLong ( image ) ; offset += 4 ; if ( ( size_t ) cin . origination . x_offset != ~ 0UL ) ( void ) FormatImageProperty ( image , \"dpx:origination.x_offset\" , \"%.20g\" , ( double ) cin . origination . x_offset ) ; cin . origination . y_offset = ( ssize_t ) ReadBlobLong ( image ) ; offset += 4 ; if ( ( size_t ) cin . origination . y_offset != ~ 0UL ) ( void ) FormatImageProperty ( image , \"dpx:origination.y_offset\" , \"%.20g\" , ( double ) cin . origination . y_offset ) ; offset += ReadBlob ( image , sizeof ( cin . origination . filename ) , ( unsigned char * ) cin . origination . filename ) ; ( void ) CopyMagickString ( property , cin . origination . filename , sizeof ( cin . origination . filename ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.filename\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . origination . create_date ) , ( unsigned char * ) cin . origination . create_date ) ; ( void ) CopyMagickString ( property , cin . origination . create_date , sizeof ( cin . origination . create_date ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.create_date\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . origination . create_time ) , ( unsigned char * ) cin . origination . create_time ) ; ( void ) CopyMagickString ( property , cin . origination . create_time , sizeof ( cin . origination . create_time ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.create_time\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . origination . device ) , ( unsigned char * ) cin . origination . device ) ; ( void ) CopyMagickString ( property , cin . origination . device , sizeof ( cin . origination . device ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.device\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . origination . model ) , ( unsigned char * ) cin . origination . model ) ; ( void ) CopyMagickString ( property , cin . origination . model , sizeof ( cin . origination . model ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.model\" , property , exception ) ; ( void ) memset ( cin . origination . serial , 0 , sizeof ( cin . origination . serial ) ) ; offset += ReadBlob ( image , sizeof ( cin . origination . serial ) , ( unsigned char * ) cin . origination . serial ) ; ( void ) CopyMagickString ( property , cin . origination . serial , sizeof ( cin . origination . serial ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.serial\" , property , exception ) ; cin . origination . x_pitch = ReadBlobFloat ( image ) ; offset += 4 ; cin . origination . y_pitch = ReadBlobFloat ( image ) ; offset += 4 ; cin . origination . gamma = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . origination . gamma ) != MagickFalse ) image -> gamma = cin . origination . gamma ; offset += ReadBlob ( image , sizeof ( cin . origination . reserve ) , ( unsigned char * ) cin . origination . reserve ) ; if ( ( cin . file . image_offset > 2048 ) && ( cin . file . user_length != 0 ) ) { int c ; cin . film . id = ReadBlobByte ( image ) ; offset ++ ; c = cin . film . id ; if ( c != ~ 0 ) ( void ) FormatImageProperty ( image , \"dpx:film.id\" , \"%d\" , cin . film . id ) ; cin . film . type = ReadBlobByte ( image ) ; offset ++ ; c = cin . film . type ; if ( c != ~ 0 ) ( void ) FormatImageProperty ( image , \"dpx:film.type\" , \"%d\" , cin . film . type ) ; cin . film . offset = ReadBlobByte ( image ) ; offset ++ ; c = cin . film . offset ; if ( c != ~ 0 ) ( void ) FormatImageProperty ( image , \"dpx:film.offset\" , \"%d\" , cin . film . offset ) ; cin . film . reserve1 = ReadBlobByte ( image ) ; offset ++ ; cin . film . prefix = ReadBlobLong ( image ) ; offset += 4 ; if ( cin . film . prefix != ~ 0UL ) ( void ) FormatImageProperty ( image , \"dpx:film.prefix\" , \"%.20g\" , ( double ) cin . film . prefix ) ; cin . film . count = ReadBlobLong ( image ) ; offset += 4 ; offset += ReadBlob ( image , sizeof ( cin . film . format ) , ( unsigned char * ) cin . film . format ) ; ( void ) CopyMagickString ( property , cin . film . format , sizeof ( cin . film . format ) ) ; ( void ) SetImageProperty ( image , \"dpx:film.format\" , property , exception ) ; cin . film . frame_position = ReadBlobLong ( image ) ; offset += 4 ; if ( cin . film . frame_position != ~ 0UL ) ( void ) FormatImageProperty ( image , \"dpx:film.frame_position\" , \"%.20g\" , ( double ) cin . film . frame_position ) ; cin . film . frame_rate = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . film . frame_rate ) != MagickFalse ) ( void ) FormatImageProperty ( image , \"dpx:film.frame_rate\" , \"%g\" , cin . film . frame_rate ) ; offset += ReadBlob ( image , sizeof ( cin . film . frame_id ) , ( unsigned char * ) cin . film . frame_id ) ; ( void ) CopyMagickString ( property , cin . film . frame_id , sizeof ( cin . film . frame_id ) ) ; ( void ) SetImageProperty ( image , \"dpx:film.frame_id\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . film . slate_info ) , ( unsigned char * ) cin . film . slate_info ) ; ( void ) CopyMagickString ( property , cin . film . slate_info , sizeof ( cin . film . slate_info ) ) ; ( void ) SetImageProperty ( image , \"dpx:film.slate_info\" , property , exception ) ; offset += ReadBlob ( image , sizeof ( cin . film . reserve ) , ( unsigned char * ) cin . film . reserve ) ; } if ( ( cin . file . image_offset > 2048 ) && ( cin . file . user_length != 0 ) ) { StringInfo * profile ; if ( cin . file . user_length > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; profile = BlobToStringInfo ( ( const unsigned char * ) NULL , cin . file . user_length ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; offset += ReadBlob ( image , GetStringInfoLength ( profile ) , GetStringInfoDatum ( profile ) ) ; ( void ) SetImageProfile ( image , \"dpx:user.data\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; } image -> depth = cin . image . channel [ 0 ] . bits_per_pixel ; image -> columns = cin . image . channel [ 0 ] . pixels_per_line ; image -> rows = cin . image . channel [ 0 ] . lines_per_image ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( image ) ; } <S2SV_StartBug> for ( ; offset < ( MagickOffsetType ) cin . file . image_offset ; offset ++ ) <S2SV_EndBug> { int c ; c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; } if ( offset < ( MagickOffsetType ) cin . file . image_offset ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; ( void ) SetImageBackgroundColor ( image , exception ) ; quantum_info = AcquireQuantumInfo ( image_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; quantum_info -> quantum = 32 ; quantum_info -> pack = MagickFalse ; quantum_type = RGBQuantum ; length = GetQuantumExtent ( image , quantum_info , quantum_type ) ; length = GetBytesPerRow ( image -> columns , 3 , image -> depth , MagickTrue ) ; if ( cin . image . number_channels == 1 ) { quantum_type = GrayQuantum ; length = GetBytesPerRow ( image -> columns , 1 , image -> depth , MagickTrue ) ; } for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; pixels = ( const unsigned char * ) ReadBlobStream ( image , length , GetQuantumPixels ( quantum_info ) , & count ) ; if ( ( size_t ) count != length ) break ; ( void ) ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } SetQuantumImageType ( image , quantum_type ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; SetImageColorspace ( image , LogColorspace , exception ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( ( ( MagickSizeType ) image -> columns * image -> rows ) > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3713\n\n```\nCWE-284 static bool msr_mtrr_valid ( unsigned msr ) { switch ( msr ) { case 0x200 ... 0x200 + 2 * KVM_NR_VAR_MTRR - 1 : case MSR_MTRRfix64K_00000 : case MSR_MTRRfix16K_80000 : case MSR_MTRRfix16K_A0000 : case MSR_MTRRfix4K_C0000 : case MSR_MTRRfix4K_C8000 : case MSR_MTRRfix4K_D0000 : case MSR_MTRRfix4K_D8000 : case MSR_MTRRfix4K_E0000 : case MSR_MTRRfix4K_E8000 : case MSR_MTRRfix4K_F0000 : case MSR_MTRRfix4K_F8000 : case MSR_MTRRdefType : case MSR_IA32_CR_PAT : return true ; <S2SV_StartBug> case 0x2f8 : <S2SV_EndBug> return true ; } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return true ; <S2SV_ModEnd> } return false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0217\n\n```\nCWE-399 static int xen_netbk_tx_check_gop ( struct xen_netbk * netbk , struct sk_buff * skb , struct gnttab_copy * * gopp ) { struct gnttab_copy * gop = * gopp ; u16 pending_idx = * ( ( u16 * ) skb -> data ) ; <S2SV_StartBug> struct pending_tx_info * pending_tx_info = netbk -> pending_tx_info ; <S2SV_EndBug> struct xenvif * vif = pending_tx_info [ pending_idx ] . vif ; struct xen_netif_tx_request * txp ; struct skb_shared_info * shinfo = skb_shinfo ( skb ) ; int nr_frags = shinfo -> nr_frags ; int i , err , start ; err = gop -> status ; <S2SV_StartBug> if ( unlikely ( err ) ) { <S2SV_EndBug> pending_ring_idx_t index ; index = pending_index ( netbk -> pending_prod ++ ) ; txp = & pending_tx_info [ pending_idx ] . req ; make_tx_response ( vif , txp , XEN_NETIF_RSP_ERROR ) ; <S2SV_StartBug> netbk -> pending_ring [ index ] = pending_idx ; <S2SV_EndBug> xenvif_put ( vif ) ; } start = ( frag_get_pending_idx ( & shinfo -> frags [ 0 ] ) == pending_idx ) ; for ( i = start ; i < nr_frags ; i ++ ) { int j , newerr ; <S2SV_StartBug> pending_ring_idx_t index ; <S2SV_EndBug> pending_idx = frag_get_pending_idx ( & shinfo -> frags [ i ] ) ; newerr = ( ++ gop ) -> status ; if ( likely ( ! newerr ) ) { if ( unlikely ( err ) ) <S2SV_StartBug> xen_netbk_idx_release ( netbk , pending_idx ) ; <S2SV_EndBug> continue ; } <S2SV_StartBug> txp = & netbk -> pending_tx_info [ pending_idx ] . req ; <S2SV_EndBug> make_tx_response ( vif , txp , XEN_NETIF_RSP_ERROR ) ; <S2SV_StartBug> index = pending_index ( netbk -> pending_prod ++ ) ; <S2SV_EndBug> netbk -> pending_ring [ index ] = pending_idx ; xenvif_put ( vif ) ; if ( err ) continue ; pending_idx = * ( ( u16 * ) skb -> data ) ; <S2SV_StartBug> xen_netbk_idx_release ( netbk , pending_idx ) ; <S2SV_EndBug> for ( j = start ; j < i ; j ++ ) { pending_idx = frag_get_pending_idx ( & shinfo -> frags [ j ] ) ; <S2SV_StartBug> xen_netbk_idx_release ( netbk , pending_idx ) ; <S2SV_EndBug> } err = newerr ; } * gopp = gop + 1 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct <S2SV_ModEnd> skb_shared_info * shinfo <S2SV_ModStart> err ) ) xen_netbk_idx_release ( netbk , pending_idx <S2SV_ModEnd> , XEN_NETIF_RSP_ERROR ) <S2SV_ModStart> XEN_NETIF_RSP_ERROR ) ; <S2SV_ModEnd> start = ( <S2SV_ModStart> , newerr ; <S2SV_ModEnd> pending_idx = frag_get_pending_idx <S2SV_ModStart> netbk , pending_idx , XEN_NETIF_RSP_OKAY <S2SV_ModStart> continue ; } xen_netbk_idx_release ( netbk , pending_idx <S2SV_ModEnd> , XEN_NETIF_RSP_ERROR ) <S2SV_ModStart> XEN_NETIF_RSP_ERROR ) ; <S2SV_ModEnd> if ( err <S2SV_ModStart> netbk , pending_idx , XEN_NETIF_RSP_OKAY <S2SV_ModStart> netbk , pending_idx , XEN_NETIF_RSP_OKAY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4515\n\n```\nCWE-200 static long bcm_char_ioctl ( struct file * filp , UINT cmd , ULONG arg ) { struct bcm_tarang_data * pTarang = filp -> private_data ; void __user * argp = ( void __user * ) arg ; struct bcm_mini_adapter * Adapter = pTarang -> Adapter ; INT Status = STATUS_FAILURE ; int timeout = 0 ; struct bcm_ioctl_buffer IoBuffer ; int bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Parameters<S2SV_blank>Passed<S2SV_blank>to<S2SV_blank>control<S2SV_blank>IOCTL<S2SV_blank>cmd=0x%X<S2SV_blank>arg=0x%lX\" , cmd , arg ) ; if ( _IOC_TYPE ( cmd ) != BCM_IOCTL ) return - EFAULT ; if ( _IOC_DIR ( cmd ) & _IOC_READ ) Status = ! access_ok ( VERIFY_WRITE , argp , _IOC_SIZE ( cmd ) ) ; else if ( _IOC_DIR ( cmd ) & _IOC_WRITE ) Status = ! access_ok ( VERIFY_READ , argp , _IOC_SIZE ( cmd ) ) ; else if ( _IOC_NONE == ( _IOC_DIR ( cmd ) & _IOC_NONE ) ) Status = STATUS_SUCCESS ; if ( Status ) return - EFAULT ; if ( Adapter -> device_removed ) return - EFAULT ; if ( FALSE == Adapter -> fw_download_done ) { switch ( cmd ) { case IOCTL_MAC_ADDR_REQ : case IOCTL_LINK_REQ : case IOCTL_CM_REQUEST : case IOCTL_SS_INFO_REQ : case IOCTL_SEND_CONTROL_MESSAGE : case IOCTL_IDLE_REQ : case IOCTL_BCM_GPIO_SET_REQUEST : case IOCTL_BCM_GPIO_STATUS_REQUEST : return - EACCES ; default : break ; } } Status = vendorextnIoctl ( Adapter , cmd , arg ) ; if ( Status != CONTINUE_COMMON_PATH ) return Status ; switch ( cmd ) { case IOCTL_BCM_REGISTER_READ_PRIVATE : { struct bcm_rdm_buffer sRdmBuffer = { 0 } ; PCHAR temp_buff ; UINT Bufflen ; u16 temp_value ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( sRdmBuffer ) ) return - EINVAL ; if ( copy_from_user ( & sRdmBuffer , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( IoBuffer . OutputLength > USHRT_MAX || IoBuffer . OutputLength == 0 ) { return - EINVAL ; } Bufflen = IoBuffer . OutputLength ; temp_value = 4 - ( Bufflen % 4 ) ; Bufflen += temp_value % 4 ; temp_buff = kmalloc ( Bufflen , GFP_KERNEL ) ; if ( ! temp_buff ) return - ENOMEM ; bytes = rdmalt ( Adapter , ( UINT ) sRdmBuffer . Register , ( PUINT ) temp_buff , Bufflen ) ; if ( bytes > 0 ) { Status = STATUS_SUCCESS ; if ( copy_to_user ( IoBuffer . OutputBuffer , temp_buff , bytes ) ) { kfree ( temp_buff ) ; return - EFAULT ; } } else { Status = bytes ; } kfree ( temp_buff ) ; break ; } case IOCTL_BCM_REGISTER_WRITE_PRIVATE : { struct bcm_wrm_buffer sWrmBuffer = { 0 } ; UINT uiTempVar = 0 ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( sWrmBuffer ) ) return - EINVAL ; if ( copy_from_user ( & sWrmBuffer , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; uiTempVar = sWrmBuffer . Register & EEPROM_REJECT_MASK ; if ( ! ( ( Adapter -> pstargetparams -> m_u32Customize ) & VSG_MODE ) && ( ( uiTempVar == EEPROM_REJECT_REG_1 ) || ( uiTempVar == EEPROM_REJECT_REG_2 ) || ( uiTempVar == EEPROM_REJECT_REG_3 ) || ( uiTempVar == EEPROM_REJECT_REG_4 ) ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"EEPROM<S2SV_blank>Access<S2SV_blank>Denied,<S2SV_blank>not<S2SV_blank>in<S2SV_blank>VSG<S2SV_blank>Mode\\\\n\" ) ; return - EFAULT ; } Status = wrmalt ( Adapter , ( UINT ) sWrmBuffer . Register , ( PUINT ) sWrmBuffer . Data , sizeof ( ULONG ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>Done\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>Failed\\\\n\" ) ; Status = - EFAULT ; } break ; } case IOCTL_BCM_REGISTER_READ : case IOCTL_BCM_EEPROM_REGISTER_READ : { struct bcm_rdm_buffer sRdmBuffer = { 0 } ; PCHAR temp_buff = NULL ; UINT uiTempVar = 0 ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>in<S2SV_blank>Idle<S2SV_blank>Mode,<S2SV_blank>Blocking<S2SV_blank>Rdms\\\\n\" ) ; return - EACCES ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( sRdmBuffer ) ) return - EINVAL ; if ( copy_from_user ( & sRdmBuffer , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( IoBuffer . OutputLength > USHRT_MAX || IoBuffer . OutputLength == 0 ) { return - EINVAL ; } temp_buff = kmalloc ( IoBuffer . OutputLength , GFP_KERNEL ) ; if ( ! temp_buff ) return STATUS_FAILURE ; if ( ( ( ( ULONG ) sRdmBuffer . Register & 0x0F000000 ) != 0x0F000000 ) || ( ( ULONG ) sRdmBuffer . Register & 0x3 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"RDM<S2SV_blank>Done<S2SV_blank>On<S2SV_blank>invalid<S2SV_blank>Address<S2SV_blank>:<S2SV_blank>%x<S2SV_blank>Access<S2SV_blank>Denied.\\\\n\" , ( int ) sRdmBuffer . Register ) ; kfree ( temp_buff ) ; return - EINVAL ; } uiTempVar = sRdmBuffer . Register & EEPROM_REJECT_MASK ; bytes = rdmaltWithLock ( Adapter , ( UINT ) sRdmBuffer . Register , ( PUINT ) temp_buff , IoBuffer . OutputLength ) ; if ( bytes > 0 ) { Status = STATUS_SUCCESS ; if ( copy_to_user ( IoBuffer . OutputBuffer , temp_buff , bytes ) ) { kfree ( temp_buff ) ; return - EFAULT ; } } else { Status = bytes ; } kfree ( temp_buff ) ; break ; } case IOCTL_BCM_REGISTER_WRITE : case IOCTL_BCM_EEPROM_REGISTER_WRITE : { struct bcm_wrm_buffer sWrmBuffer = { 0 } ; UINT uiTempVar = 0 ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>in<S2SV_blank>Idle<S2SV_blank>Mode,<S2SV_blank>Blocking<S2SV_blank>Wrms\\\\n\" ) ; return - EACCES ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( sWrmBuffer ) ) return - EINVAL ; if ( copy_from_user ( & sWrmBuffer , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( ( ( ( ULONG ) sWrmBuffer . Register & 0x0F000000 ) != 0x0F000000 ) || ( ( ULONG ) sWrmBuffer . Register & 0x3 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>Done<S2SV_blank>On<S2SV_blank>invalid<S2SV_blank>Address<S2SV_blank>:<S2SV_blank>%x<S2SV_blank>Access<S2SV_blank>Denied.\\\\n\" , ( int ) sWrmBuffer . Register ) ; return - EINVAL ; } uiTempVar = sWrmBuffer . Register & EEPROM_REJECT_MASK ; if ( ! ( ( Adapter -> pstargetparams -> m_u32Customize ) & VSG_MODE ) && ( ( uiTempVar == EEPROM_REJECT_REG_1 ) || ( uiTempVar == EEPROM_REJECT_REG_2 ) || ( uiTempVar == EEPROM_REJECT_REG_3 ) || ( uiTempVar == EEPROM_REJECT_REG_4 ) ) && ( cmd == IOCTL_BCM_REGISTER_WRITE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"EEPROM<S2SV_blank>Access<S2SV_blank>Denied,<S2SV_blank>not<S2SV_blank>in<S2SV_blank>VSG<S2SV_blank>Mode\\\\n\" ) ; return - EFAULT ; } Status = wrmaltWithLock ( Adapter , ( UINT ) sWrmBuffer . Register , ( PUINT ) sWrmBuffer . Data , sWrmBuffer . Length ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>Done\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>Failed\\\\n\" ) ; Status = - EFAULT ; } break ; } case IOCTL_BCM_GPIO_SET_REQUEST : { UCHAR ucResetValue [ 4 ] ; UINT value = 0 ; UINT uiBit = 0 ; UINT uiOperation = 0 ; struct bcm_gpio_info gpio_info = { 0 } ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"GPIO<S2SV_blank>Can\\'t<S2SV_blank>be<S2SV_blank>set/clear<S2SV_blank>in<S2SV_blank>Low<S2SV_blank>power<S2SV_blank>Mode\" ) ; return - EACCES ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( gpio_info ) ) return - EINVAL ; if ( copy_from_user ( & gpio_info , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; uiBit = gpio_info . uiGpioNumber ; uiOperation = gpio_info . uiGpioValue ; value = ( 1 << uiBit ) ; if ( IsReqGpioIsLedInNVM ( Adapter , value ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Sorry,<S2SV_blank>Requested<S2SV_blank>GPIO<0x%X><S2SV_blank>is<S2SV_blank>not<S2SV_blank>correspond<S2SV_blank>to<S2SV_blank>LED<S2SV_blank>!!!\" , value ) ; Status = - EINVAL ; break ; } if ( uiOperation ) { Status = wrmaltWithLock ( Adapter , BCM_GPIO_OUTPUT_SET_REG , ( PUINT ) ( & value ) , sizeof ( UINT ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Set<S2SV_blank>the<S2SV_blank>GPIO<S2SV_blank>bit\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>the<S2SV_blank>%dth<S2SV_blank>GPIO\\\\n\" , uiBit ) ; break ; } } else { Status = wrmaltWithLock ( Adapter , BCM_GPIO_OUTPUT_CLR_REG , ( PUINT ) ( & value ) , sizeof ( UINT ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Set<S2SV_blank>the<S2SV_blank>GPIO<S2SV_blank>bit\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Failed<S2SV_blank>to<S2SV_blank>clear<S2SV_blank>the<S2SV_blank>%dth<S2SV_blank>GPIO\\\\n\" , uiBit ) ; break ; } } bytes = rdmaltWithLock ( Adapter , ( UINT ) GPIO_MODE_REGISTER , ( PUINT ) ucResetValue , sizeof ( UINT ) ) ; if ( bytes < 0 ) { Status = bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"GPIO_MODE_REGISTER<S2SV_blank>read<S2SV_blank>failed\" ) ; break ; } else { Status = STATUS_SUCCESS ; } * ( UINT * ) ucResetValue |= ( 1 << uiBit ) ; Status = wrmaltWithLock ( Adapter , GPIO_MODE_REGISTER , ( PUINT ) ucResetValue , sizeof ( UINT ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Set<S2SV_blank>the<S2SV_blank>GPIO<S2SV_blank>to<S2SV_blank>output<S2SV_blank>Mode\\\\n\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Failed<S2SV_blank>to<S2SV_blank>put<S2SV_blank>GPIO<S2SV_blank>in<S2SV_blank>Output<S2SV_blank>Mode\\\\n\" ) ; break ; } } break ; case BCM_LED_THREAD_STATE_CHANGE_REQ : { struct bcm_user_thread_req threadReq = { 0 } ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"User<S2SV_blank>made<S2SV_blank>LED<S2SV_blank>thread<S2SV_blank>InActive\" ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"GPIO<S2SV_blank>Can\\'t<S2SV_blank>be<S2SV_blank>set/clear<S2SV_blank>in<S2SV_blank>Low<S2SV_blank>power<S2SV_blank>Mode\" ) ; Status = - EACCES ; break ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( threadReq ) ) return - EINVAL ; if ( copy_from_user ( & threadReq , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( Adapter -> LEDInfo . led_thread_running ) { if ( threadReq . ThreadState == LED_THREAD_ACTIVATION_REQ ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Activating<S2SV_blank>thread<S2SV_blank>req\" ) ; Adapter -> DriverState = LED_THREAD_ACTIVE ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"DeActivating<S2SV_blank>Thread<S2SV_blank>req.....\" ) ; Adapter -> DriverState = LED_THREAD_INACTIVE ; } wake_up ( & Adapter -> LEDInfo . notify_led_event ) ; } } break ; case IOCTL_BCM_GPIO_STATUS_REQUEST : { ULONG uiBit = 0 ; UCHAR ucRead [ 4 ] ; struct bcm_gpio_info gpio_info = { 0 } ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) return - EACCES ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( gpio_info ) ) return - EINVAL ; if ( copy_from_user ( & gpio_info , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; uiBit = gpio_info . uiGpioNumber ; bytes = rdmaltWithLock ( Adapter , ( UINT ) GPIO_PIN_STATE_REGISTER , ( PUINT ) ucRead , sizeof ( UINT ) ) ; if ( bytes < 0 ) { Status = bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"RDM<S2SV_blank>Failed\\\\n\" ) ; return Status ; } else { Status = STATUS_SUCCESS ; } } break ; case IOCTL_BCM_GPIO_MULTI_REQUEST : { UCHAR ucResetValue [ 4 ] ; struct bcm_gpio_multi_info gpio_multi_info [ MAX_IDX ] ; struct bcm_gpio_multi_info * pgpio_multi_info = ( struct bcm_gpio_multi_info * ) gpio_multi_info ; memset ( pgpio_multi_info , 0 , MAX_IDX * sizeof ( struct bcm_gpio_multi_info ) ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) return - EINVAL ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( gpio_multi_info ) ) return - EINVAL ; if ( copy_from_user ( & gpio_multi_info , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; if ( IsReqGpioIsLedInNVM ( Adapter , pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Sorry,<S2SV_blank>Requested<S2SV_blank>GPIO<0x%X><S2SV_blank>is<S2SV_blank>not<S2SV_blank>correspond<S2SV_blank>to<S2SV_blank>NVM<S2SV_blank>LED<S2SV_blank>bit<S2SV_blank>map<0x%X>!!!\" , pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask , Adapter -> gpioBitMap ) ; Status = - EINVAL ; break ; } if ( ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask ) & ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOCommand ) ) { * ( UINT * ) ucResetValue = pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask & pgpio_multi_info [ WIMAX_IDX ] . uiGPIOCommand & pgpio_multi_info [ WIMAX_IDX ] . uiGPIOValue ; if ( * ( UINT * ) ucResetValue ) Status = wrmaltWithLock ( Adapter , BCM_GPIO_OUTPUT_SET_REG , ( PUINT ) ucResetValue , sizeof ( ULONG ) ) ; if ( Status != STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>to<S2SV_blank>BCM_GPIO_OUTPUT_SET_REG<S2SV_blank>Failed.\" ) ; return Status ; } * ( UINT * ) ucResetValue = ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask & pgpio_multi_info [ WIMAX_IDX ] . uiGPIOCommand & ( ~ ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOValue ) ) ) ; if ( * ( UINT * ) ucResetValue ) Status = wrmaltWithLock ( Adapter , BCM_GPIO_OUTPUT_CLR_REG , ( PUINT ) ucResetValue , sizeof ( ULONG ) ) ; if ( Status != STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>to<S2SV_blank>BCM_GPIO_OUTPUT_CLR_REG<S2SV_blank>Failed.\" ) ; return Status ; } } if ( pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask ) { bytes = rdmaltWithLock ( Adapter , ( UINT ) GPIO_PIN_STATE_REGISTER , ( PUINT ) ucResetValue , sizeof ( UINT ) ) ; if ( bytes < 0 ) { Status = bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"RDM<S2SV_blank>to<S2SV_blank>GPIO_PIN_STATE_REGISTER<S2SV_blank>Failed.\" ) ; return Status ; } else { Status = STATUS_SUCCESS ; } pgpio_multi_info [ WIMAX_IDX ] . uiGPIOValue = ( * ( UINT * ) ucResetValue & pgpio_multi_info [ WIMAX_IDX ] . uiGPIOMask ) ; } Status = copy_to_user ( IoBuffer . OutputBuffer , & gpio_multi_info , IoBuffer . OutputLength ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Failed<S2SV_blank>while<S2SV_blank>copying<S2SV_blank>Content<S2SV_blank>to<S2SV_blank>IOBufer<S2SV_blank>for<S2SV_blank>user<S2SV_blank>space<S2SV_blank>err:%d\" , Status ) ; return - EFAULT ; } } break ; case IOCTL_BCM_GPIO_MODE_REQUEST : { UCHAR ucResetValue [ 4 ] ; struct bcm_gpio_multi_mode gpio_multi_mode [ MAX_IDX ] ; struct bcm_gpio_multi_mode * pgpio_multi_mode = ( struct bcm_gpio_multi_mode * ) gpio_multi_mode ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) return - EINVAL ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength > sizeof ( gpio_multi_mode ) ) return - EINVAL ; if ( copy_from_user ( & gpio_multi_mode , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) return - EFAULT ; bytes = rdmaltWithLock ( Adapter , ( UINT ) GPIO_MODE_REGISTER , ( PUINT ) ucResetValue , sizeof ( UINT ) ) ; if ( bytes < 0 ) { Status = bytes ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Read<S2SV_blank>of<S2SV_blank>GPIO_MODE_REGISTER<S2SV_blank>failed\" ) ; return Status ; } else { Status = STATUS_SUCCESS ; } if ( IsReqGpioIsLedInNVM ( Adapter , pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Sorry,<S2SV_blank>Requested<S2SV_blank>GPIO<0x%X><S2SV_blank>is<S2SV_blank>not<S2SV_blank>correspond<S2SV_blank>to<S2SV_blank>NVM<S2SV_blank>LED<S2SV_blank>bit<S2SV_blank>map<0x%X>!!!\" , pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask , Adapter -> gpioBitMap ) ; Status = - EINVAL ; break ; } if ( pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask ) { * ( UINT * ) ucResetValue |= ( pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMode & pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask ) ; * ( UINT * ) ucResetValue &= ~ ( ( ~ pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMode ) & pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMask ) ; pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMode = * ( UINT * ) ucResetValue ; Status = wrmaltWithLock ( Adapter , GPIO_MODE_REGISTER , ( PUINT ) ucResetValue , sizeof ( ULONG ) ) ; if ( Status == STATUS_SUCCESS ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"WRM<S2SV_blank>to<S2SV_blank>GPIO_MODE_REGISTER<S2SV_blank>Done\" ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>to<S2SV_blank>GPIO_MODE_REGISTER<S2SV_blank>Failed\" ) ; Status = - EFAULT ; break ; } } else { pgpio_multi_mode [ WIMAX_IDX ] . uiGPIOMode = * ( UINT * ) ucResetValue ; } Status = copy_to_user ( IoBuffer . OutputBuffer , & gpio_multi_mode , IoBuffer . OutputLength ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Failed<S2SV_blank>while<S2SV_blank>copying<S2SV_blank>Content<S2SV_blank>to<S2SV_blank>IOBufer<S2SV_blank>for<S2SV_blank>user<S2SV_blank>space<S2SV_blank>err:%d\" , Status ) ; return - EFAULT ; } } break ; case IOCTL_MAC_ADDR_REQ : case IOCTL_LINK_REQ : case IOCTL_CM_REQUEST : case IOCTL_SS_INFO_REQ : case IOCTL_SEND_CONTROL_MESSAGE : case IOCTL_IDLE_REQ : { PVOID pvBuffer = NULL ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength < sizeof ( struct bcm_link_request ) ) return - EINVAL ; if ( IoBuffer . InputLength > MAX_CNTL_PKT_SIZE ) return - EINVAL ; pvBuffer = memdup_user ( IoBuffer . InputBuffer , IoBuffer . InputLength ) ; if ( IS_ERR ( pvBuffer ) ) return PTR_ERR ( pvBuffer ) ; down ( & Adapter -> LowPowerModeSync ) ; Status = wait_event_interruptible_timeout ( Adapter -> lowpower_mode_wait_queue , ! Adapter -> bPreparingForLowPowerMode , ( 1 * HZ ) ) ; if ( Status == - ERESTARTSYS ) goto cntrlEnd ; if ( Adapter -> bPreparingForLowPowerMode ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Preparing<S2SV_blank>Idle<S2SV_blank>Mode<S2SV_blank>is<S2SV_blank>still<S2SV_blank>True<S2SV_blank>-<S2SV_blank>Hence<S2SV_blank>Rejecting<S2SV_blank>control<S2SV_blank>message\\\\n\" ) ; Status = STATUS_FAILURE ; goto cntrlEnd ; } Status = CopyBufferToControlPacket ( Adapter , ( PVOID ) pvBuffer ) ; cntrlEnd : up ( & Adapter -> LowPowerModeSync ) ; kfree ( pvBuffer ) ; break ; } case IOCTL_BCM_BUFFER_DOWNLOAD_START : { if ( down_trylock ( & Adapter -> NVMRdmWrmLock ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_CHIP_RESET<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>as<S2SV_blank>EEPROM<S2SV_blank>Read/Write<S2SV_blank>is<S2SV_blank>in<S2SV_blank>progress\\\\n\" ) ; return - EACCES ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Starting<S2SV_blank>the<S2SV_blank>firmware<S2SV_blank>download<S2SV_blank>PID<S2SV_blank>=0x%x!!!!\\\\n\" , current -> pid ) ; if ( down_trylock ( & Adapter -> fw_download_sema ) ) return - EBUSY ; Adapter -> bBinDownloaded = FALSE ; Adapter -> fw_download_process_pid = current -> pid ; Adapter -> bCfgDownloaded = FALSE ; Adapter -> fw_download_done = FALSE ; netif_carrier_off ( Adapter -> dev ) ; netif_stop_queue ( Adapter -> dev ) ; Status = reset_card_proc ( Adapter ) ; if ( Status ) { pr_err ( PFX \"%s:<S2SV_blank>reset_card_proc<S2SV_blank>Failed!\\\\n\" , Adapter -> dev -> name ) ; up ( & Adapter -> fw_download_sema ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } mdelay ( 10 ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } case IOCTL_BCM_BUFFER_DOWNLOAD : { struct bcm_firmware_info * psFwInfo = NULL ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Starting<S2SV_blank>the<S2SV_blank>firmware<S2SV_blank>download<S2SV_blank>PID<S2SV_blank>=0x%x!!!!\\\\n\" , current -> pid ) ; if ( ! down_trylock ( & Adapter -> fw_download_sema ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Invalid<S2SV_blank>way<S2SV_blank>to<S2SV_blank>download<S2SV_blank>buffer.<S2SV_blank>Use<S2SV_blank>Start<S2SV_blank>and<S2SV_blank>then<S2SV_blank>call<S2SV_blank>this!!!\\\\n\" ) ; up ( & Adapter -> fw_download_sema ) ; Status = - EINVAL ; return Status ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) { up ( & Adapter -> fw_download_sema ) ; return - EFAULT ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Length<S2SV_blank>for<S2SV_blank>FW<S2SV_blank>DLD<S2SV_blank>is<S2SV_blank>:<S2SV_blank>%lx\\\\n\" , IoBuffer . InputLength ) ; if ( IoBuffer . InputLength > sizeof ( struct bcm_firmware_info ) ) { up ( & Adapter -> fw_download_sema ) ; return - EINVAL ; } psFwInfo = kmalloc ( sizeof ( * psFwInfo ) , GFP_KERNEL ) ; if ( ! psFwInfo ) { up ( & Adapter -> fw_download_sema ) ; return - ENOMEM ; } if ( copy_from_user ( psFwInfo , IoBuffer . InputBuffer , IoBuffer . InputLength ) ) { up ( & Adapter -> fw_download_sema ) ; kfree ( psFwInfo ) ; return - EFAULT ; } if ( ! psFwInfo -> pvMappedFirmwareAddress || ( psFwInfo -> u32FirmwareLength == 0 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Something<S2SV_blank>else<S2SV_blank>is<S2SV_blank>wrong<S2SV_blank>%lu\\\\n\" , psFwInfo -> u32FirmwareLength ) ; up ( & Adapter -> fw_download_sema ) ; kfree ( psFwInfo ) ; Status = - EINVAL ; return Status ; } Status = bcm_ioctl_fw_download ( Adapter , psFwInfo ) ; if ( Status != STATUS_SUCCESS ) { if ( psFwInfo -> u32StartingAddress == CONFIG_BEGIN_ADDR ) BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"IOCTL:<S2SV_blank>Configuration<S2SV_blank>File<S2SV_blank>Upload<S2SV_blank>Failed\\\\n\" ) ; else BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"IOCTL:<S2SV_blank>Firmware<S2SV_blank>File<S2SV_blank>Upload<S2SV_blank>Failed\\\\n\" ) ; if ( Adapter -> LEDInfo . led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY ) { Adapter -> DriverState = DRIVER_INIT ; Adapter -> LEDInfo . bLedInitDone = FALSE ; wake_up ( & Adapter -> LEDInfo . notify_led_event ) ; } } if ( Status != STATUS_SUCCESS ) up ( & Adapter -> fw_download_sema ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , OSAL_DBG , DBG_LVL_ALL , \"IOCTL:<S2SV_blank>Firmware<S2SV_blank>File<S2SV_blank>Uploaded\\\\n\" ) ; kfree ( psFwInfo ) ; return Status ; } case IOCTL_BCM_BUFFER_DOWNLOAD_STOP : { if ( ! down_trylock ( & Adapter -> fw_download_sema ) ) { up ( & Adapter -> fw_download_sema ) ; return - EINVAL ; } if ( down_trylock ( & Adapter -> NVMRdmWrmLock ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"FW<S2SV_blank>download<S2SV_blank>blocked<S2SV_blank>as<S2SV_blank>EEPROM<S2SV_blank>Read/Write<S2SV_blank>is<S2SV_blank>in<S2SV_blank>progress\\\\n\" ) ; up ( & Adapter -> fw_download_sema ) ; return - EACCES ; } Adapter -> bBinDownloaded = TRUE ; Adapter -> bCfgDownloaded = TRUE ; atomic_set ( & Adapter -> CurrNumFreeTxDesc , 0 ) ; Adapter -> CurrNumRecvDescs = 0 ; Adapter -> downloadDDR = 0 ; Status = run_card_proc ( Adapter ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Firm<S2SV_blank>Download<S2SV_blank>Failed\\\\n\" ) ; up ( & Adapter -> fw_download_sema ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Firm<S2SV_blank>Download<S2SV_blank>Over...\\\\n\" ) ; } mdelay ( 10 ) ; if ( StartInterruptUrb ( ( struct bcm_interface_adapter * ) Adapter -> pvInterfaceAdapter ) ) BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Unable<S2SV_blank>to<S2SV_blank>send<S2SV_blank>interrupt...\\\\n\" ) ; timeout = 5 * HZ ; Adapter -> waiting_to_fw_download_done = FALSE ; wait_event_timeout ( Adapter -> ioctl_fw_dnld_wait_queue , Adapter -> waiting_to_fw_download_done , timeout ) ; Adapter -> fw_download_process_pid = INVALID_PID ; Adapter -> fw_download_done = TRUE ; atomic_set ( & Adapter -> CurrNumFreeTxDesc , 0 ) ; Adapter -> CurrNumRecvDescs = 0 ; Adapter -> PrevNumRecvDescs = 0 ; atomic_set ( & Adapter -> cntrlpktCnt , 0 ) ; Adapter -> LinkUpStatus = 0 ; Adapter -> LinkStatus = 0 ; if ( Adapter -> LEDInfo . led_thread_running & BCM_LED_THREAD_RUNNING_ACTIVELY ) { Adapter -> DriverState = FW_DOWNLOAD_DONE ; wake_up ( & Adapter -> LEDInfo . notify_led_event ) ; } if ( ! timeout ) Status = - ENODEV ; up ( & Adapter -> fw_download_sema ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } case IOCTL_BE_BUCKET_SIZE : Status = 0 ; if ( get_user ( Adapter -> BEBucketSize , ( unsigned long __user * ) arg ) ) Status = - EFAULT ; break ; case IOCTL_RTPS_BUCKET_SIZE : Status = 0 ; if ( get_user ( Adapter -> rtPSBucketSize , ( unsigned long __user * ) arg ) ) Status = - EFAULT ; break ; case IOCTL_CHIP_RESET : { INT NVMAccess = down_trylock ( & Adapter -> NVMRdmWrmLock ) ; if ( NVMAccess ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"<S2SV_blank>IOCTL_BCM_CHIP_RESET<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>as<S2SV_blank>EEPROM<S2SV_blank>Read/Write<S2SV_blank>is<S2SV_blank>in<S2SV_blank>progress\\\\n\" ) ; return - EACCES ; } down ( & Adapter -> RxAppControlQueuelock ) ; Status = reset_card_proc ( Adapter ) ; flushAllAppQ ( ) ; up ( & Adapter -> RxAppControlQueuelock ) ; up ( & Adapter -> NVMRdmWrmLock ) ; ResetCounters ( Adapter ) ; break ; } case IOCTL_QOS_THRESHOLD : { USHORT uiLoopIndex ; Status = 0 ; for ( uiLoopIndex = 0 ; uiLoopIndex < NO_OF_QUEUES ; uiLoopIndex ++ ) { if ( get_user ( Adapter -> PackInfo [ uiLoopIndex ] . uiThreshold , ( unsigned long __user * ) arg ) ) { Status = - EFAULT ; break ; } } break ; } case IOCTL_DUMP_PACKET_INFO : DumpPackInfo ( Adapter ) ; DumpPhsRules ( & Adapter -> stBCMPhsContext ) ; Status = STATUS_SUCCESS ; break ; case IOCTL_GET_PACK_INFO : if ( copy_to_user ( argp , & Adapter -> PackInfo , sizeof ( struct bcm_packet_info ) * NO_OF_QUEUES ) ) return - EFAULT ; Status = STATUS_SUCCESS ; break ; case IOCTL_BCM_SWITCH_TRANSFER_MODE : { UINT uiData = 0 ; if ( copy_from_user ( & uiData , argp , sizeof ( UINT ) ) ) return - EFAULT ; if ( uiData ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_SWITCH_TRANSFER_MODE:<S2SV_blank>ETH_PACKET_TUNNELING_MODE\\\\n\" ) ; Adapter -> TransferMode = ETH_PACKET_TUNNELING_MODE ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_SWITCH_TRANSFER_MODE:<S2SV_blank>IP_PACKET_ONLY_MODE\\\\n\" ) ; Adapter -> TransferMode = IP_PACKET_ONLY_MODE ; } Status = STATUS_SUCCESS ; break ; } case IOCTL_BCM_GET_DRIVER_VERSION : { ulong len ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; len = min_t ( ulong , IoBuffer . OutputLength , strlen ( DRV_VERSION ) + 1 ) ; if ( copy_to_user ( IoBuffer . OutputBuffer , DRV_VERSION , len ) ) return - EFAULT ; Status = STATUS_SUCCESS ; break ; } case IOCTL_BCM_GET_CURRENT_STATUS : { struct bcm_link_state link_state ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"copy_from_user<S2SV_blank>failed..\\\\n\" ) ; return - EFAULT ; } if ( IoBuffer . OutputLength != sizeof ( link_state ) ) { Status = - EINVAL ; break ; } memset ( & link_state , 0 , sizeof ( link_state ) ) ; link_state . bIdleMode = Adapter -> IdleMode ; link_state . bShutdownMode = Adapter -> bShutStatus ; link_state . ucLinkStatus = Adapter -> LinkStatus ; if ( copy_to_user ( IoBuffer . OutputBuffer , & link_state , min_t ( size_t , sizeof ( link_state ) , IoBuffer . OutputLength ) ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy_to_user<S2SV_blank>Failed..\\\\n\" ) ; return - EFAULT ; } Status = STATUS_SUCCESS ; break ; } case IOCTL_BCM_SET_MAC_TRACING : { UINT tracing_flag ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & tracing_flag , IoBuffer . InputBuffer , sizeof ( UINT ) ) ) return - EFAULT ; if ( tracing_flag ) Adapter -> pTarangs -> MacTracingEnabled = TRUE ; else Adapter -> pTarangs -> MacTracingEnabled = FALSE ; break ; } case IOCTL_BCM_GET_DSX_INDICATION : { ULONG ulSFId = 0 ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength < sizeof ( struct bcm_add_indication_alt ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Mismatch<S2SV_blank>req:<S2SV_blank>%lx<S2SV_blank>needed<S2SV_blank>is<S2SV_blank>=0x%zx!!!\" , IoBuffer . OutputLength , sizeof ( struct bcm_add_indication_alt ) ) ; return - EINVAL ; } if ( copy_from_user ( & ulSFId , IoBuffer . InputBuffer , sizeof ( ulSFId ) ) ) return - EFAULT ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Get<S2SV_blank>DSX<S2SV_blank>Data<S2SV_blank>SF<S2SV_blank>ID<S2SV_blank>is<S2SV_blank>=%lx\\\\n\" , ulSFId ) ; get_dsx_sf_data_to_application ( Adapter , ulSFId , IoBuffer . OutputBuffer ) ; Status = STATUS_SUCCESS ; } break ; case IOCTL_BCM_GET_HOST_MIBS : { PVOID temp_buff ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength != sizeof ( struct bcm_host_stats_mibs ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Length<S2SV_blank>Check<S2SV_blank>failed<S2SV_blank>%lu<S2SV_blank>%zd\\\\n\" , IoBuffer . OutputLength , sizeof ( struct bcm_host_stats_mibs ) ) ; return - EINVAL ; } temp_buff = kzalloc ( sizeof ( struct bcm_host_stats_mibs ) , GFP_KERNEL ) ; if ( ! temp_buff ) return STATUS_FAILURE ; Status = ProcessGetHostMibs ( Adapter , temp_buff ) ; GetDroppedAppCntrlPktMibs ( temp_buff , pTarang ) ; if ( Status != STATUS_FAILURE ) if ( copy_to_user ( IoBuffer . OutputBuffer , temp_buff , sizeof ( struct bcm_host_stats_mibs ) ) ) { kfree ( temp_buff ) ; return - EFAULT ; } kfree ( temp_buff ) ; break ; } case IOCTL_BCM_WAKE_UP_DEVICE_FROM_IDLE : if ( ( FALSE == Adapter -> bTriedToWakeUpFromlowPowerMode ) && ( TRUE == Adapter -> IdleMode ) ) { Adapter -> usIdleModePattern = ABORT_IDLE_MODE ; Adapter -> bWakeUpDevice = TRUE ; wake_up ( & Adapter -> process_rx_cntrlpkt ) ; } Status = STATUS_SUCCESS ; break ; case IOCTL_BCM_BULK_WRM : { struct bcm_bulk_wrm_buffer * pBulkBuffer ; UINT uiTempVar = 0 ; PCHAR pvBuffer = NULL ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode,<S2SV_blank>Blocking<S2SV_blank>Wrms\\\\n\" ) ; Status = - EACCES ; break ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . InputLength < sizeof ( ULONG ) * 2 ) return - EINVAL ; pvBuffer = memdup_user ( IoBuffer . InputBuffer , IoBuffer . InputLength ) ; if ( IS_ERR ( pvBuffer ) ) return PTR_ERR ( pvBuffer ) ; pBulkBuffer = ( struct bcm_bulk_wrm_buffer * ) pvBuffer ; if ( ( ( ULONG ) pBulkBuffer -> Register & 0x0F000000 ) != 0x0F000000 || ( ( ULONG ) pBulkBuffer -> Register & 0x3 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>Done<S2SV_blank>On<S2SV_blank>invalid<S2SV_blank>Address<S2SV_blank>:<S2SV_blank>%x<S2SV_blank>Access<S2SV_blank>Denied.\\\\n\" , ( int ) pBulkBuffer -> Register ) ; kfree ( pvBuffer ) ; Status = - EINVAL ; break ; } uiTempVar = pBulkBuffer -> Register & EEPROM_REJECT_MASK ; if ( ! ( ( Adapter -> pstargetparams -> m_u32Customize ) & VSG_MODE ) && ( ( uiTempVar == EEPROM_REJECT_REG_1 ) || ( uiTempVar == EEPROM_REJECT_REG_2 ) || ( uiTempVar == EEPROM_REJECT_REG_3 ) || ( uiTempVar == EEPROM_REJECT_REG_4 ) ) && ( cmd == IOCTL_BCM_REGISTER_WRITE ) ) { kfree ( pvBuffer ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"EEPROM<S2SV_blank>Access<S2SV_blank>Denied,<S2SV_blank>not<S2SV_blank>in<S2SV_blank>VSG<S2SV_blank>Mode\\\\n\" ) ; Status = - EFAULT ; break ; } if ( pBulkBuffer -> SwapEndian == FALSE ) Status = wrmWithLock ( Adapter , ( UINT ) pBulkBuffer -> Register , ( PCHAR ) pBulkBuffer -> Values , IoBuffer . InputLength - 2 * sizeof ( ULONG ) ) ; else Status = wrmaltWithLock ( Adapter , ( UINT ) pBulkBuffer -> Register , ( PUINT ) pBulkBuffer -> Values , IoBuffer . InputLength - 2 * sizeof ( ULONG ) ) ; if ( Status != STATUS_SUCCESS ) BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"WRM<S2SV_blank>Failed\\\\n\" ) ; kfree ( pvBuffer ) ; break ; } case IOCTL_BCM_GET_NVM_SIZE : if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( Adapter -> eNVMType == NVM_EEPROM || Adapter -> eNVMType == NVM_FLASH ) { if ( copy_to_user ( IoBuffer . OutputBuffer , & Adapter -> uiNVMDSDSize , sizeof ( UINT ) ) ) return - EFAULT ; } Status = STATUS_SUCCESS ; break ; case IOCTL_BCM_CAL_INIT : { UINT uiSectorSize = 0 ; if ( Adapter -> eNVMType == NVM_FLASH ) { if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & uiSectorSize , IoBuffer . InputBuffer , sizeof ( UINT ) ) ) return - EFAULT ; if ( ( uiSectorSize < MIN_SECTOR_SIZE ) || ( uiSectorSize > MAX_SECTOR_SIZE ) ) { if ( copy_to_user ( IoBuffer . OutputBuffer , & Adapter -> uiSectorSize , sizeof ( UINT ) ) ) return - EFAULT ; } else { if ( IsFlash2x ( Adapter ) ) { if ( copy_to_user ( IoBuffer . OutputBuffer , & Adapter -> uiSectorSize , sizeof ( UINT ) ) ) return - EFAULT ; } else { if ( ( TRUE == Adapter -> bShutStatus ) || ( TRUE == Adapter -> IdleMode ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; return - EACCES ; } Adapter -> uiSectorSize = uiSectorSize ; BcmUpdateSectorSize ( Adapter , Adapter -> uiSectorSize ) ; } } Status = STATUS_SUCCESS ; } else { Status = STATUS_FAILURE ; } } break ; case IOCTL_BCM_SET_DEBUG : # ifdef DEBUG { struct bcm_user_debug_state sUserDebugState ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"In<S2SV_blank>SET_DEBUG<S2SV_blank>ioctl\\\\n\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & sUserDebugState , IoBuffer . InputBuffer , sizeof ( struct bcm_user_debug_state ) ) ) return - EFAULT ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"IOCTL_BCM_SET_DEBUG:<S2SV_blank>OnOff=%d<S2SV_blank>Type<S2SV_blank>=<S2SV_blank>0x%x<S2SV_blank>\" , sUserDebugState . OnOff , sUserDebugState . Type ) ; sUserDebugState . Subtype = 1 << sUserDebugState . Subtype ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"actual<S2SV_blank>Subtype=0x%x\\\\n\" , sUserDebugState . Subtype ) ; Adapter -> stDebugState . type |= sUserDebugState . Type ; if ( sUserDebugState . OnOff ) Adapter -> stDebugState . subtype [ sUserDebugState . Type ] |= sUserDebugState . Subtype ; else Adapter -> stDebugState . subtype [ sUserDebugState . Type ] &= ~ sUserDebugState . Subtype ; BCM_SHOW_DEBUG_BITMAP ( Adapter ) ; } # endif break ; case IOCTL_BCM_NVM_READ : case IOCTL_BCM_NVM_WRITE : { struct bcm_nvm_readwrite stNVMReadWrite ; PUCHAR pReadData = NULL ; ULONG ulDSDMagicNumInUsrBuff = 0 ; struct timeval tv0 , tv1 ; memset ( & tv0 , 0 , sizeof ( struct timeval ) ) ; memset ( & tv1 , 0 , sizeof ( struct timeval ) ) ; if ( ( Adapter -> eNVMType == NVM_FLASH ) && ( Adapter -> uiFlashLayoutMajorVersion == 0 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"The<S2SV_blank>Flash<S2SV_blank>Control<S2SV_blank>Section<S2SV_blank>is<S2SV_blank>Corrupted.<S2SV_blank>Hence<S2SV_blank>Rejection<S2SV_blank>on<S2SV_blank>NVM<S2SV_blank>Read/Write\\\\n\" ) ; return - EFAULT ; } if ( IsFlash2x ( Adapter ) ) { if ( ( Adapter -> eActiveDSD != DSD0 ) && ( Adapter -> eActiveDSD != DSD1 ) && ( Adapter -> eActiveDSD != DSD2 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"No<S2SV_blank>DSD<S2SV_blank>is<S2SV_blank>active..hence<S2SV_blank>NVM<S2SV_blank>Command<S2SV_blank>is<S2SV_blank>blocked\" ) ; return STATUS_FAILURE ; } } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & stNVMReadWrite , ( IOCTL_BCM_NVM_READ == cmd ) ? IoBuffer . OutputBuffer : IoBuffer . InputBuffer , sizeof ( struct bcm_nvm_readwrite ) ) ) return - EFAULT ; if ( stNVMReadWrite . uiNumBytes > Adapter -> uiNVMDSDSize ) return STATUS_FAILURE ; if ( stNVMReadWrite . uiOffset > Adapter -> uiNVMDSDSize - stNVMReadWrite . uiNumBytes ) { return STATUS_FAILURE ; } pReadData = memdup_user ( stNVMReadWrite . pBuffer , stNVMReadWrite . uiNumBytes ) ; if ( IS_ERR ( pReadData ) ) return PTR_ERR ( pReadData ) ; do_gettimeofday ( & tv0 ) ; if ( IOCTL_BCM_NVM_READ == cmd ) { down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadData ) ; return - EACCES ; } Status = BeceemNVMRead ( Adapter , ( PUINT ) pReadData , stNVMReadWrite . uiOffset , stNVMReadWrite . uiNumBytes ) ; up ( & Adapter -> NVMRdmWrmLock ) ; if ( Status != STATUS_SUCCESS ) { kfree ( pReadData ) ; return Status ; } if ( copy_to_user ( stNVMReadWrite . pBuffer , pReadData , stNVMReadWrite . uiNumBytes ) ) { kfree ( pReadData ) ; return - EFAULT ; } } else { down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadData ) ; return - EACCES ; } Adapter -> bHeaderChangeAllowed = TRUE ; if ( IsFlash2x ( Adapter ) ) { Status = BcmFlash2xCorruptSig ( Adapter , Adapter -> eActiveDSD ) ; if ( Status != STATUS_SUCCESS ) { if ( ( ( stNVMReadWrite . uiOffset + stNVMReadWrite . uiNumBytes ) != Adapter -> uiNVMDSDSize ) || ( stNVMReadWrite . uiNumBytes < SIGNATURE_SIZE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"DSD<S2SV_blank>Sig<S2SV_blank>is<S2SV_blank>present<S2SV_blank>neither<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>nor<S2SV_blank>User<S2SV_blank>provided<S2SV_blank>Input..\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadData ) ; return Status ; } ulDSDMagicNumInUsrBuff = ntohl ( * ( PUINT ) ( pReadData + stNVMReadWrite . uiNumBytes - SIGNATURE_SIZE ) ) ; if ( ulDSDMagicNumInUsrBuff != DSD_IMAGE_MAGIC_NUMBER ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"DSD<S2SV_blank>Sig<S2SV_blank>is<S2SV_blank>present<S2SV_blank>neither<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>nor<S2SV_blank>User<S2SV_blank>provided<S2SV_blank>Input..\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadData ) ; return Status ; } } } Status = BeceemNVMWrite ( Adapter , ( PUINT ) pReadData , stNVMReadWrite . uiOffset , stNVMReadWrite . uiNumBytes , stNVMReadWrite . bVerify ) ; if ( IsFlash2x ( Adapter ) ) BcmFlash2xWriteSig ( Adapter , Adapter -> eActiveDSD ) ; Adapter -> bHeaderChangeAllowed = FALSE ; up ( & Adapter -> NVMRdmWrmLock ) ; if ( Status != STATUS_SUCCESS ) { kfree ( pReadData ) ; return Status ; } } do_gettimeofday ( & tv1 ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"<S2SV_blank>timetaken<S2SV_blank>by<S2SV_blank>Write/read<S2SV_blank>:%ld<S2SV_blank>msec\\\\n\" , ( tv1 . tv_sec - tv0 . tv_sec ) * 1000 + ( tv1 . tv_usec - tv0 . tv_usec ) / 1000 ) ; kfree ( pReadData ) ; return STATUS_SUCCESS ; } case IOCTL_BCM_FLASH2X_SECTION_READ : { struct bcm_flash2x_readwrite sFlash2xRead = { 0 } ; PUCHAR pReadBuff = NULL ; UINT NOB = 0 ; UINT BuffSize = 0 ; UINT ReadBytes = 0 ; UINT ReadOffset = 0 ; void __user * OutPutBuff ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_FLASH2X_SECTION_READ<S2SV_blank>Called\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & sFlash2xRead , IoBuffer . InputBuffer , sizeof ( struct bcm_flash2x_readwrite ) ) ) return - EFAULT ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.Section<S2SV_blank>:%x\" , sFlash2xRead . Section ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.offset<S2SV_blank>:%x\" , sFlash2xRead . offset ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.numOfBytes<S2SV_blank>:%x\" , sFlash2xRead . numOfBytes ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.bVerify<S2SV_blank>:%x\\\\n\" , sFlash2xRead . bVerify ) ; if ( validateFlash2xReadWrite ( Adapter , & sFlash2xRead ) == FALSE ) return STATUS_FAILURE ; NOB = sFlash2xRead . numOfBytes ; if ( NOB > Adapter -> uiSectorSize ) BuffSize = Adapter -> uiSectorSize ; else BuffSize = NOB ; ReadOffset = sFlash2xRead . offset ; OutPutBuff = IoBuffer . OutputBuffer ; pReadBuff = ( PCHAR ) kzalloc ( BuffSize , GFP_KERNEL ) ; if ( pReadBuff == NULL ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Memory<S2SV_blank>allocation<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>Flash<S2SV_blank>2.x<S2SV_blank>Read<S2SV_blank>Structure\" ) ; return - ENOMEM ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; return - EACCES ; } while ( NOB ) { if ( NOB > Adapter -> uiSectorSize ) ReadBytes = Adapter -> uiSectorSize ; else ReadBytes = NOB ; Status = BcmFlash2xBulkRead ( Adapter , ( PUINT ) pReadBuff , sFlash2xRead . Section , ReadOffset , ReadBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Flash<S2SV_blank>2x<S2SV_blank>read<S2SV_blank>err<S2SV_blank>with<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; break ; } BCM_DEBUG_PRINT_BUFFER ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , pReadBuff , ReadBytes ) ; Status = copy_to_user ( OutPutBuff , pReadBuff , ReadBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Copy<S2SV_blank>to<S2SV_blank>use<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>status<S2SV_blank>:%d\" , Status ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; return - EFAULT ; } NOB = NOB - ReadBytes ; if ( NOB ) { ReadOffset = ReadOffset + ReadBytes ; OutPutBuff = OutPutBuff + ReadBytes ; } } up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; } break ; case IOCTL_BCM_FLASH2X_SECTION_WRITE : { struct bcm_flash2x_readwrite sFlash2xWrite = { 0 } ; PUCHAR pWriteBuff ; void __user * InputAddr ; UINT NOB = 0 ; UINT BuffSize = 0 ; UINT WriteOffset = 0 ; UINT WriteBytes = 0 ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } Adapter -> bAllDSDWriteAllow = FALSE ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_FLASH2X_SECTION_WRITE<S2SV_blank>Called\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( copy_from_user ( & sFlash2xWrite , IoBuffer . InputBuffer , sizeof ( struct bcm_flash2x_readwrite ) ) ) return - EFAULT ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.Section<S2SV_blank>:%x\" , sFlash2xWrite . Section ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.offset<S2SV_blank>:%d\" , sFlash2xWrite . offset ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.numOfBytes<S2SV_blank>:%x\" , sFlash2xWrite . numOfBytes ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\nsFlash2xRead.bVerify<S2SV_blank>:%x\\\\n\" , sFlash2xWrite . bVerify ) ; if ( ( sFlash2xWrite . Section != VSA0 ) && ( sFlash2xWrite . Section != VSA1 ) && ( sFlash2xWrite . Section != VSA2 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Only<S2SV_blank>VSA<S2SV_blank>write<S2SV_blank>is<S2SV_blank>allowed\" ) ; return - EINVAL ; } if ( validateFlash2xReadWrite ( Adapter , & sFlash2xWrite ) == FALSE ) return STATUS_FAILURE ; InputAddr = sFlash2xWrite . pDataBuff ; WriteOffset = sFlash2xWrite . offset ; NOB = sFlash2xWrite . numOfBytes ; if ( NOB > Adapter -> uiSectorSize ) BuffSize = Adapter -> uiSectorSize ; else BuffSize = NOB ; pWriteBuff = kmalloc ( BuffSize , GFP_KERNEL ) ; if ( pWriteBuff == NULL ) return - ENOMEM ; WriteBytes = Adapter -> uiSectorSize ; if ( WriteOffset % Adapter -> uiSectorSize ) WriteBytes = Adapter -> uiSectorSize - ( WriteOffset % Adapter -> uiSectorSize ) ; if ( NOB < WriteBytes ) WriteBytes = NOB ; down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pWriteBuff ) ; return - EACCES ; } BcmFlash2xCorruptSig ( Adapter , sFlash2xWrite . Section ) ; do { Status = copy_from_user ( pWriteBuff , InputAddr , WriteBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>to<S2SV_blank>user<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>status<S2SV_blank>:%d\" , Status ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pWriteBuff ) ; return - EFAULT ; } BCM_DEBUG_PRINT_BUFFER ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , pWriteBuff , WriteBytes ) ; Status = BcmFlash2xBulkWrite ( Adapter , ( PUINT ) pWriteBuff , sFlash2xWrite . Section , WriteOffset , WriteBytes , sFlash2xWrite . bVerify ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>2x<S2SV_blank>read<S2SV_blank>err<S2SV_blank>with<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; break ; } NOB = NOB - WriteBytes ; if ( NOB ) { WriteOffset = WriteOffset + WriteBytes ; InputAddr = InputAddr + WriteBytes ; if ( NOB > Adapter -> uiSectorSize ) WriteBytes = Adapter -> uiSectorSize ; else WriteBytes = NOB ; } } while ( NOB > 0 ) ; BcmFlash2xWriteSig ( Adapter , sFlash2xWrite . Section ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pWriteBuff ) ; } break ; case IOCTL_BCM_GET_FLASH2X_SECTION_BITMAP : { struct bcm_flash2x_bitmap * psFlash2xBitMap ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_GET_FLASH2X_SECTION_BITMAP<S2SV_blank>Called\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength != sizeof ( struct bcm_flash2x_bitmap ) ) return - EINVAL ; psFlash2xBitMap = kzalloc ( sizeof ( struct bcm_flash2x_bitmap ) , GFP_KERNEL ) ; if ( psFlash2xBitMap == NULL ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Memory<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available\" ) ; return - ENOMEM ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( psFlash2xBitMap ) ; return - EACCES ; } BcmGetFlash2xSectionalBitMap ( Adapter , psFlash2xBitMap ) ; up ( & Adapter -> NVMRdmWrmLock ) ; if ( copy_to_user ( IoBuffer . OutputBuffer , psFlash2xBitMap , sizeof ( struct bcm_flash2x_bitmap ) ) ) { kfree ( psFlash2xBitMap ) ; return - EFAULT ; } kfree ( psFlash2xBitMap ) ; } break ; case IOCTL_BCM_SET_ACTIVE_SECTION : { enum bcm_flash2x_section_val eFlash2xSectionVal = 0 ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_SET_ACTIVE_SECTION<S2SV_blank>Called\" ) ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>IOCTL<S2SV_blank>BUFFER<S2SV_blank>failed\" ) ; return - EFAULT ; } Status = copy_from_user ( & eFlash2xSectionVal , IoBuffer . InputBuffer , sizeof ( INT ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>flash<S2SV_blank>section<S2SV_blank>val<S2SV_blank>failed\" ) ; return - EFAULT ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return - EACCES ; } Status = BcmSetActiveSection ( Adapter , eFlash2xSectionVal ) ; if ( Status ) BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>it\\'s<S2SV_blank>priority<S2SV_blank>Highest.<S2SV_blank>Status<S2SV_blank>%d\" , Status ) ; up ( & Adapter -> NVMRdmWrmLock ) ; } break ; case IOCTL_BCM_IDENTIFY_ACTIVE_SECTION : { Adapter -> bAllDSDWriteAllow = FALSE ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_IDENTIFY_ACTIVE_SECTION<S2SV_blank>called\" ) ; Status = STATUS_SUCCESS ; } break ; case IOCTL_BCM_COPY_SECTION : { struct bcm_flash2x_copy_section sCopySectStrut = { 0 } ; Status = STATUS_SUCCESS ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_COPY_SECTION<S2SV_blank><S2SV_blank>Called\" ) ; Adapter -> bAllDSDWriteAllow = FALSE ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>IOCTL<S2SV_blank>BUFFER<S2SV_blank>failed<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; return - EFAULT ; } Status = copy_from_user ( & sCopySectStrut , IoBuffer . InputBuffer , sizeof ( struct bcm_flash2x_copy_section ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>Copy_Section_Struct<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; return - EFAULT ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Source<S2SV_blank>SEction<S2SV_blank>:%x\" , sCopySectStrut . SrcSection ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Destination<S2SV_blank>SEction<S2SV_blank>:%x\" , sCopySectStrut . DstSection ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"offset<S2SV_blank>:%x\" , sCopySectStrut . offset ) ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"NOB<S2SV_blank>:%x\" , sCopySectStrut . numOfBytes ) ; if ( IsSectionExistInFlash ( Adapter , sCopySectStrut . SrcSection ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Source<S2SV_blank>Section<%x><S2SV_blank>does<S2SV_blank>not<S2SV_blank>exixt<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>\" , sCopySectStrut . SrcSection ) ; return - EINVAL ; } if ( IsSectionExistInFlash ( Adapter , sCopySectStrut . DstSection ) == FALSE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Destinatio<S2SV_blank>Section<%x><S2SV_blank>does<S2SV_blank>not<S2SV_blank>exixt<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>\" , sCopySectStrut . DstSection ) ; return - EINVAL ; } if ( sCopySectStrut . SrcSection == sCopySectStrut . DstSection ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Source<S2SV_blank>and<S2SV_blank>Destination<S2SV_blank>section<S2SV_blank>should<S2SV_blank>be<S2SV_blank>different\" ) ; return - EINVAL ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return - EACCES ; } if ( sCopySectStrut . SrcSection == ISO_IMAGE1 || sCopySectStrut . SrcSection == ISO_IMAGE2 ) { if ( IsNonCDLessDevice ( Adapter ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Device<S2SV_blank>is<S2SV_blank>Non-CDLess<S2SV_blank>hence<S2SV_blank>won\\'t<S2SV_blank>have<S2SV_blank>ISO<S2SV_blank>!!\" ) ; Status = - EINVAL ; } else if ( sCopySectStrut . numOfBytes == 0 ) { Status = BcmCopyISO ( Adapter , sCopySectStrut ) ; } else { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Partial<S2SV_blank>Copy<S2SV_blank>of<S2SV_blank>ISO<S2SV_blank>section<S2SV_blank>is<S2SV_blank>not<S2SV_blank>Allowed..\" ) ; Status = STATUS_FAILURE ; } up ( & Adapter -> NVMRdmWrmLock ) ; return Status ; } Status = BcmCopySection ( Adapter , sCopySectStrut . SrcSection , sCopySectStrut . DstSection , sCopySectStrut . offset , sCopySectStrut . numOfBytes ) ; up ( & Adapter -> NVMRdmWrmLock ) ; } break ; case IOCTL_BCM_GET_FLASH_CS_INFO : { Status = STATUS_SUCCESS ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"<S2SV_blank>IOCTL_BCM_GET_FLASH_CS_INFO<S2SV_blank>Called\" ) ; Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>IOCTL<S2SV_blank>BUFFER<S2SV_blank>failed\" ) ; return - EFAULT ; } if ( Adapter -> eNVMType != NVM_FLASH ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Connected<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>flash\" ) ; Status = - EINVAL ; break ; } if ( IsFlash2x ( Adapter ) == TRUE ) { if ( IoBuffer . OutputLength < sizeof ( struct bcm_flash2x_cs_info ) ) return - EINVAL ; if ( copy_to_user ( IoBuffer . OutputBuffer , Adapter -> psFlash2xCSInfo , sizeof ( struct bcm_flash2x_cs_info ) ) ) return - EFAULT ; } else { if ( IoBuffer . OutputLength < sizeof ( struct bcm_flash_cs_info ) ) return - EINVAL ; if ( copy_to_user ( IoBuffer . OutputBuffer , Adapter -> psFlashCSInfo , sizeof ( struct bcm_flash_cs_info ) ) ) return - EFAULT ; } } break ; case IOCTL_BCM_SELECT_DSD : { UINT SectOfset = 0 ; enum bcm_flash2x_section_val eFlash2xSectionVal ; eFlash2xSectionVal = NO_SECTION_VAL ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_SELECT_DSD<S2SV_blank>Called\" ) ; if ( IsFlash2x ( Adapter ) != TRUE ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>Does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>2.x<S2SV_blank>map\" ) ; return - EINVAL ; } Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>IOCTL<S2SV_blank>BUFFER<S2SV_blank>failed\" ) ; return - EFAULT ; } Status = copy_from_user ( & eFlash2xSectionVal , IoBuffer . InputBuffer , sizeof ( INT ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>of<S2SV_blank>flash<S2SV_blank>section<S2SV_blank>val<S2SV_blank>failed\" ) ; return - EFAULT ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Read<S2SV_blank>Section<S2SV_blank>:%d\" , eFlash2xSectionVal ) ; if ( ( eFlash2xSectionVal != DSD0 ) && ( eFlash2xSectionVal != DSD1 ) && ( eFlash2xSectionVal != DSD2 ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Passed<S2SV_blank>section<%x><S2SV_blank>is<S2SV_blank>not<S2SV_blank>DSD<S2SV_blank>section\" , eFlash2xSectionVal ) ; return STATUS_FAILURE ; } SectOfset = BcmGetSectionValStartOffset ( Adapter , eFlash2xSectionVal ) ; if ( SectOfset == INVALID_OFFSET ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Provided<S2SV_blank>Section<S2SV_blank>val<S2SV_blank><%d><S2SV_blank>does<S2SV_blank>not<S2SV_blank>exixt<S2SV_blank>in<S2SV_blank>Flash<S2SV_blank>2.x\" , eFlash2xSectionVal ) ; return - EINVAL ; } Adapter -> bAllDSDWriteAllow = TRUE ; Adapter -> ulFlashCalStart = SectOfset ; Adapter -> eActiveDSD = eFlash2xSectionVal ; } Status = STATUS_SUCCESS ; break ; case IOCTL_BCM_NVM_RAW_READ : { struct bcm_nvm_readwrite stNVMRead ; INT NOB ; INT BuffSize ; INT ReadOffset = 0 ; UINT ReadBytes = 0 ; PUCHAR pReadBuff ; void __user * OutPutBuff ; if ( Adapter -> eNVMType != NVM_FLASH ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"NVM<S2SV_blank>TYPE<S2SV_blank>is<S2SV_blank>not<S2SV_blank>Flash\" ) ; return - EINVAL ; } if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"copy_from_user<S2SV_blank>1<S2SV_blank>failed\\\\n\" ) ; return - EFAULT ; } if ( copy_from_user ( & stNVMRead , IoBuffer . OutputBuffer , sizeof ( struct bcm_nvm_readwrite ) ) ) return - EFAULT ; NOB = stNVMRead . uiNumBytes ; if ( NOB > DEFAULT_BUFF_SIZE ) BuffSize = DEFAULT_BUFF_SIZE ; else BuffSize = NOB ; ReadOffset = stNVMRead . uiOffset ; OutPutBuff = stNVMRead . pBuffer ; pReadBuff = kzalloc ( BuffSize , GFP_KERNEL ) ; if ( pReadBuff == NULL ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Memory<S2SV_blank>allocation<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>Flash<S2SV_blank>2.x<S2SV_blank>Read<S2SV_blank>Structure\" ) ; Status = - ENOMEM ; break ; } down ( & Adapter -> NVMRdmWrmLock ) ; if ( ( Adapter -> IdleMode == TRUE ) || ( Adapter -> bShutStatus == TRUE ) || ( Adapter -> bPreparingForLowPowerMode == TRUE ) ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>Idle/Shutdown<S2SV_blank>Mode\\\\n\" ) ; kfree ( pReadBuff ) ; up ( & Adapter -> NVMRdmWrmLock ) ; return - EACCES ; } Adapter -> bFlashRawRead = TRUE ; while ( NOB ) { if ( NOB > DEFAULT_BUFF_SIZE ) ReadBytes = DEFAULT_BUFF_SIZE ; else ReadBytes = NOB ; Status = BeceemNVMRead ( Adapter , ( PUINT ) pReadBuff , ReadOffset , ReadBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Flash<S2SV_blank>2x<S2SV_blank>read<S2SV_blank>err<S2SV_blank>with<S2SV_blank>Status<S2SV_blank>:%d\" , Status ) ; break ; } BCM_DEBUG_PRINT_BUFFER ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , pReadBuff , ReadBytes ) ; Status = copy_to_user ( OutPutBuff , pReadBuff , ReadBytes ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_PRINTK , 0 , 0 , \"Copy<S2SV_blank>to<S2SV_blank>use<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>status<S2SV_blank>:%d\" , Status ) ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; return - EFAULT ; } NOB = NOB - ReadBytes ; if ( NOB ) { ReadOffset = ReadOffset + ReadBytes ; OutPutBuff = OutPutBuff + ReadBytes ; } } Adapter -> bFlashRawRead = FALSE ; up ( & Adapter -> NVMRdmWrmLock ) ; kfree ( pReadBuff ) ; break ; } case IOCTL_BCM_CNTRLMSG_MASK : { ULONG RxCntrlMsgBitMask = 0 ; Status = copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"copy<S2SV_blank>of<S2SV_blank>Ioctl<S2SV_blank>buffer<S2SV_blank>is<S2SV_blank>failed<S2SV_blank>from<S2SV_blank>user<S2SV_blank>space\" ) ; return - EFAULT ; } if ( IoBuffer . InputLength != sizeof ( unsigned long ) ) { Status = - EINVAL ; break ; } Status = copy_from_user ( & RxCntrlMsgBitMask , IoBuffer . InputBuffer , IoBuffer . InputLength ) ; if ( Status ) { BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"copy<S2SV_blank>of<S2SV_blank>control<S2SV_blank>bit<S2SV_blank>mask<S2SV_blank>failed<S2SV_blank>from<S2SV_blank>user<S2SV_blank>space\" ) ; return - EFAULT ; } BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"\\\\n<S2SV_blank>Got<S2SV_blank>user<S2SV_blank>defined<S2SV_blank>cntrl<S2SV_blank>msg<S2SV_blank>bit<S2SV_blank>mask<S2SV_blank>:%lx\" , RxCntrlMsgBitMask ) ; pTarang -> RxCntrlMsgBitMask = RxCntrlMsgBitMask ; } break ; case IOCTL_BCM_GET_DEVICE_DRIVER_INFO : { struct bcm_driver_info DevInfo ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"Called<S2SV_blank>IOCTL_BCM_GET_DEVICE_DRIVER_INFO\\\\n\" ) ; <S2SV_StartBug> DevInfo . MaxRDMBufferSize = BUFFER_4K ; <S2SV_EndBug> DevInfo . u32DSDStartOffset = EEPROM_CALPARAM_START ; DevInfo . u32RxAlignmentCorrection = 0 ; DevInfo . u32NVMType = Adapter -> eNVMType ; DevInfo . u32InterfaceType = BCM_USB ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength < sizeof ( DevInfo ) ) return - EINVAL ; if ( copy_to_user ( IoBuffer . OutputBuffer , & DevInfo , sizeof ( DevInfo ) ) ) return - EFAULT ; } break ; case IOCTL_BCM_TIME_SINCE_NET_ENTRY : { struct bcm_time_elapsed stTimeElapsedSinceNetEntry = { 0 } ; BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_BCM_TIME_SINCE_NET_ENTRY<S2SV_blank>called\" ) ; if ( copy_from_user ( & IoBuffer , argp , sizeof ( struct bcm_ioctl_buffer ) ) ) return - EFAULT ; if ( IoBuffer . OutputLength < sizeof ( struct bcm_time_elapsed ) ) return - EINVAL ; stTimeElapsedSinceNetEntry . ul64TimeElapsedSinceNetEntry = get_seconds ( ) - Adapter -> liTimeSinceLastNetEntry ; if ( copy_to_user ( IoBuffer . OutputBuffer , & stTimeElapsedSinceNetEntry , sizeof ( struct bcm_time_elapsed ) ) ) return - EFAULT ; } break ; case IOCTL_CLOSE_NOTIFICATION : BCM_DEBUG_PRINT ( Adapter , DBG_TYPE_OTHERS , OSAL_DBG , DBG_LVL_ALL , \"IOCTL_CLOSE_NOTIFICATION\" ) ; break ; default : pr_info ( DRV_NAME \":<S2SV_blank>unknown<S2SV_blank>ioctl<S2SV_blank>cmd=%#x\\\\n\" , cmd ) ; Status = STATUS_FAILURE ; break ; } return Status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Called<S2SV_blank>IOCTL_BCM_GET_DEVICE_DRIVER_INFO\\\\n\" ) ; memset ( & DevInfo , 0 , sizeof ( DevInfo ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr3_leaf_list_int ( struct xfs_buf * bp , struct xfs_attr_list_context * context ) { struct attrlist_cursor_kern * cursor ; struct xfs_attr_leafblock * leaf ; struct xfs_attr3_icleaf_hdr ichdr ; struct xfs_attr_leaf_entry * entries ; struct xfs_attr_leaf_entry * entry ; int retval ; int i ; trace_xfs_attr_list_leaf ( context ) ; leaf = bp -> b_addr ; xfs_attr3_leaf_hdr_from_disk ( & ichdr , leaf ) ; entries = xfs_attr3_leaf_entryp ( leaf ) ; cursor = context -> cursor ; cursor -> initted = 1 ; if ( context -> resynch ) { entry = & entries [ 0 ] ; for ( i = 0 ; i < ichdr . count ; entry ++ , i ++ ) { if ( be32_to_cpu ( entry -> hashval ) == cursor -> hashval ) { if ( cursor -> offset == context -> dupcnt ) { context -> dupcnt = 0 ; break ; } context -> dupcnt ++ ; } else if ( be32_to_cpu ( entry -> hashval ) > cursor -> hashval ) { context -> dupcnt = 0 ; break ; } } if ( i == ichdr . count ) { trace_xfs_attr_list_notfound ( context ) ; return 0 ; } } else { entry = & entries [ 0 ] ; i = 0 ; } context -> resynch = 0 ; retval = 0 ; for ( ; i < ichdr . count ; entry ++ , i ++ ) { if ( be32_to_cpu ( entry -> hashval ) != cursor -> hashval ) { cursor -> hashval = be32_to_cpu ( entry -> hashval ) ; cursor -> offset = 0 ; } if ( entry -> flags & XFS_ATTR_INCOMPLETE ) continue ; if ( entry -> flags & XFS_ATTR_LOCAL ) { xfs_attr_leaf_name_local_t * name_loc = xfs_attr3_leaf_name_local ( leaf , i ) ; retval = context -> put_listent ( context , entry -> flags , name_loc -> nameval , ( int ) name_loc -> namelen , be16_to_cpu ( name_loc -> valuelen ) , & name_loc -> nameval [ name_loc -> namelen ] ) ; if ( retval ) return retval ; } else { xfs_attr_leaf_name_remote_t * name_rmt = xfs_attr3_leaf_name_remote ( leaf , i ) ; int valuelen = be32_to_cpu ( name_rmt -> valuelen ) ; if ( context -> put_value ) { xfs_da_args_t args ; memset ( ( char * ) & args , 0 , sizeof ( args ) ) ; args . dp = context -> dp ; args . whichfork = XFS_ATTR_FORK ; args . valuelen = valuelen ; <S2SV_StartBug> args . value = kmem_alloc ( valuelen , KM_SLEEP | KM_NOFS ) ; <S2SV_EndBug> args . rmtblkno = be32_to_cpu ( name_rmt -> valueblk ) ; args . rmtblkcnt = xfs_attr3_rmt_blocks ( args . dp -> i_mount , valuelen ) ; retval = xfs_attr_rmtval_get ( & args ) ; if ( retval ) return retval ; retval = context -> put_listent ( context , entry -> flags , name_rmt -> name , ( int ) name_rmt -> namelen , valuelen , args . value ) ; kmem_free ( args . value ) ; } else { retval = context -> put_listent ( context , entry -> flags , name_rmt -> name , ( int ) name_rmt -> namelen , valuelen , NULL ) ; } if ( retval ) return retval ; } if ( context -> seen_enough ) break ; cursor -> offset ++ ; } trace_xfs_attr_list_leaf_end ( context ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; args . rmtvaluelen = valuelen ; args .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8633\n\n```\nCWE-119 static int fwnet_incoming_packet ( struct fwnet_device * dev , __be32 * buf , int len , int source_node_id , int generation , bool is_broadcast ) { struct sk_buff * skb ; struct net_device * net = dev -> netdev ; struct rfc2734_header hdr ; unsigned lf ; unsigned long flags ; struct fwnet_peer * peer ; struct fwnet_partial_datagram * pd ; int fg_off ; int dg_size ; u16 datagram_label ; int retval ; u16 ether_type ; <S2SV_StartBug> hdr . w0 = be32_to_cpu ( buf [ 0 ] ) ; <S2SV_EndBug> lf = fwnet_get_hdr_lf ( & hdr ) ; if ( lf == RFC2374_HDR_UNFRAG ) { ether_type = fwnet_get_hdr_ether_type ( & hdr ) ; buf ++ ; len -= RFC2374_UNFRAG_HDR_SIZE ; skb = dev_alloc_skb ( len + LL_RESERVED_SPACE ( net ) ) ; if ( unlikely ( ! skb ) ) { net -> stats . rx_dropped ++ ; return - ENOMEM ; } skb_reserve ( skb , LL_RESERVED_SPACE ( net ) ) ; memcpy ( skb_put ( skb , len ) , buf , len ) ; return fwnet_finish_incoming_packet ( net , skb , source_node_id , is_broadcast , ether_type ) ; } <S2SV_StartBug> hdr . w1 = ntohl ( buf [ 1 ] ) ; <S2SV_EndBug> buf += 2 ; len -= RFC2374_FRAG_HDR_SIZE ; if ( lf == RFC2374_HDR_FIRSTFRAG ) { ether_type = fwnet_get_hdr_ether_type ( & hdr ) ; fg_off = 0 ; } else { ether_type = 0 ; fg_off = fwnet_get_hdr_fg_off ( & hdr ) ; } datagram_label = fwnet_get_hdr_dgl ( & hdr ) ; dg_size = fwnet_get_hdr_dg_size ( & hdr ) ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> peer = fwnet_peer_find_by_node_id ( dev , source_node_id , generation ) ; if ( ! peer ) { retval = - ENOENT ; goto fail ; } pd = fwnet_pd_find ( peer , datagram_label ) ; if ( pd == NULL ) { while ( peer -> pdg_size >= FWNET_MAX_FRAGMENTS ) { fwnet_pd_delete ( list_first_entry ( & peer -> pd_list , struct fwnet_partial_datagram , pd_link ) ) ; peer -> pdg_size -- ; } pd = fwnet_pd_new ( net , peer , datagram_label , dg_size , buf , fg_off , len ) ; if ( pd == NULL ) { retval = - ENOMEM ; goto fail ; } peer -> pdg_size ++ ; } else { if ( fwnet_frag_overlap ( pd , fg_off , len ) || pd -> datagram_size != dg_size ) { fwnet_pd_delete ( pd ) ; pd = fwnet_pd_new ( net , peer , datagram_label , dg_size , buf , fg_off , len ) ; if ( pd == NULL ) { peer -> pdg_size -- ; retval = - ENOMEM ; goto fail ; } } else { if ( ! fwnet_pd_update ( peer , pd , buf , fg_off , len ) ) { fwnet_pd_delete ( pd ) ; peer -> pdg_size -- ; retval = - ENOMEM ; goto fail ; } } } if ( lf == RFC2374_HDR_FIRSTFRAG ) pd -> ether_type = ether_type ; if ( fwnet_pd_is_complete ( pd ) ) { ether_type = pd -> ether_type ; peer -> pdg_size -- ; skb = skb_get ( pd -> skb ) ; fwnet_pd_delete ( pd ) ; spin_unlock_irqrestore ( & dev -> lock , flags ) ; return fwnet_finish_incoming_packet ( net , skb , source_node_id , false , ether_type ) ; } retval = 0 ; fail : spin_unlock_irqrestore ( & dev -> lock , flags ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u16 ether_type ; if ( len <= RFC2374_UNFRAG_HDR_SIZE ) return 0 ; <S2SV_ModStart> ) ; } if ( len <= RFC2374_FRAG_HDR_SIZE ) return 0 ; <S2SV_ModStart> hdr ) ; if ( fg_off + len > dg_size ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3214\n\n```\nCWE-119 static int pit_ioport_read ( struct kvm_io_device * this , gpa_t addr , int len , void * data ) { struct kvm_pit * pit = dev_to_pit ( this ) ; struct kvm_kpit_state * pit_state = & pit -> pit_state ; struct kvm * kvm = pit -> kvm ; int ret , count ; struct kvm_kpit_channel_state * s ; if ( ! pit_in_range ( addr ) ) return - EOPNOTSUPP ; addr &= KVM_PIT_CHANNEL_MASK ; <S2SV_StartBug> s = & pit_state -> channels [ addr ] ; <S2SV_EndBug> mutex_lock ( & pit_state -> lock ) ; if ( s -> status_latched ) { s -> status_latched = 0 ; ret = s -> status ; } else if ( s -> count_latched ) { switch ( s -> count_latched ) { default : case RW_STATE_LSB : ret = s -> latched_count & 0xff ; s -> count_latched = 0 ; break ; case RW_STATE_MSB : ret = s -> latched_count >> 8 ; s -> count_latched = 0 ; break ; case RW_STATE_WORD0 : ret = s -> latched_count & 0xff ; s -> count_latched = RW_STATE_MSB ; break ; } } else { switch ( s -> read_state ) { default : case RW_STATE_LSB : count = pit_get_count ( kvm , addr ) ; ret = count & 0xff ; break ; case RW_STATE_MSB : count = pit_get_count ( kvm , addr ) ; ret = ( count >> 8 ) & 0xff ; break ; case RW_STATE_WORD0 : count = pit_get_count ( kvm , addr ) ; ret = count & 0xff ; s -> read_state = RW_STATE_WORD1 ; break ; case RW_STATE_WORD1 : count = pit_get_count ( kvm , addr ) ; ret = ( count >> 8 ) & 0xff ; s -> read_state = RW_STATE_WORD0 ; break ; } } if ( len > sizeof ( ret ) ) len = sizeof ( ret ) ; memcpy ( data , ( char * ) & ret , len ) ; mutex_unlock ( & pit_state -> lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> &= KVM_PIT_CHANNEL_MASK ; if ( addr == 3 ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12210\n\n```\nCWE-200 int get_devices_from_authfile ( const char * authfile , const char * username , unsigned max_devs , int verbose , FILE * debug_file , device_t * devices , unsigned * n_devs ) { char * buf = NULL ; char * s_user , * s_token ; int retval = 0 ; int fd = - 1 ; struct stat st ; struct passwd * pw = NULL , pw_s ; char buffer [ BUFSIZE ] ; int gpu_ret ; FILE * opwfile = NULL ; unsigned i , j ; * n_devs = 0 ; <S2SV_StartBug> fd = open ( authfile , O_RDONLY , 0 ) ; <S2SV_EndBug> if ( fd < 0 ) { if ( verbose ) D ( debug_file , \"Cannot<S2SV_blank>open<S2SV_blank>file:<S2SV_blank>%s<S2SV_blank>(%s)\" , authfile , strerror ( errno ) ) ; goto err ; } if ( fstat ( fd , & st ) < 0 ) { if ( verbose ) D ( debug_file , \"Cannot<S2SV_blank>stat<S2SV_blank>file:<S2SV_blank>%s<S2SV_blank>(%s)\" , authfile , strerror ( errno ) ) ; goto err ; } if ( ! S_ISREG ( st . st_mode ) ) { if ( verbose ) D ( debug_file , \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>regular<S2SV_blank>file\" , authfile ) ; goto err ; } if ( st . st_size == 0 ) { if ( verbose ) D ( debug_file , \"File<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>empty\" , authfile ) ; goto err ; } gpu_ret = getpwuid_r ( st . st_uid , & pw_s , buffer , sizeof ( buffer ) , & pw ) ; if ( gpu_ret != 0 || pw == NULL ) { D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>credentials<S2SV_blank>for<S2SV_blank>uid<S2SV_blank>%u,<S2SV_blank>(%s)\" , st . st_uid , strerror ( errno ) ) ; goto err ; } if ( strcmp ( pw -> pw_name , username ) != 0 && strcmp ( pw -> pw_name , \"root\" ) != 0 ) { if ( strcmp ( username , \"root\" ) != 0 ) { D ( debug_file , \"The<S2SV_blank>owner<S2SV_blank>of<S2SV_blank>the<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>%s<S2SV_blank>nor<S2SV_blank>root\" , username ) ; } else { D ( debug_file , \"The<S2SV_blank>owner<S2SV_blank>of<S2SV_blank>the<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>is<S2SV_blank>not<S2SV_blank>root\" ) ; } goto err ; } opwfile = fdopen ( fd , \"r\" ) ; if ( opwfile == NULL ) { if ( verbose ) D ( debug_file , \"fdopen:<S2SV_blank>%s\" , strerror ( errno ) ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } buf = malloc ( sizeof ( char ) * ( DEVSIZE * max_devs ) ) ; if ( ! buf ) { if ( verbose ) D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto err ; } retval = - 2 ; while ( fgets ( buf , ( int ) ( DEVSIZE * ( max_devs - 1 ) ) , opwfile ) ) { char * saveptr = NULL ; if ( buf [ strlen ( buf ) - 1 ] == '\\\\n' ) buf [ strlen ( buf ) - 1 ] = '\\\\0' ; if ( verbose ) D ( debug_file , \"Authorization<S2SV_blank>line:<S2SV_blank>%s\" , buf ) ; s_user = strtok_r ( buf , \":\" , & saveptr ) ; if ( s_user && strcmp ( username , s_user ) == 0 ) { if ( verbose ) D ( debug_file , \"Matched<S2SV_blank>user:<S2SV_blank>%s\" , s_user ) ; retval = - 1 ; for ( i = 0 ; i < * n_devs ; i ++ ) { free ( devices [ i ] . keyHandle ) ; free ( devices [ i ] . publicKey ) ; devices [ i ] . keyHandle = NULL ; devices [ i ] . publicKey = NULL ; } * n_devs = 0 ; i = 0 ; while ( ( s_token = strtok_r ( NULL , \",\" , & saveptr ) ) ) { devices [ i ] . keyHandle = NULL ; devices [ i ] . publicKey = NULL ; if ( ( * n_devs ) ++ > MAX_DEVS - 1 ) { * n_devs = MAX_DEVS ; if ( verbose ) D ( debug_file , \"Found<S2SV_blank>more<S2SV_blank>than<S2SV_blank>%d<S2SV_blank>devices,<S2SV_blank>ignoring<S2SV_blank>the<S2SV_blank>remaining<S2SV_blank>ones\" , MAX_DEVS ) ; break ; } if ( verbose ) D ( debug_file , \"KeyHandle<S2SV_blank>for<S2SV_blank>device<S2SV_blank>number<S2SV_blank>%d:<S2SV_blank>%s\" , i + 1 , s_token ) ; devices [ i ] . keyHandle = strdup ( s_token ) ; if ( ! devices [ i ] . keyHandle ) { if ( verbose ) D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>keyHandle<S2SV_blank>number<S2SV_blank>%d\" , i ) ; goto err ; } s_token = strtok_r ( NULL , \":\" , & saveptr ) ; if ( ! s_token ) { if ( verbose ) D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>publicKey<S2SV_blank>number<S2SV_blank>%d\" , i + 1 ) ; goto err ; } if ( verbose ) D ( debug_file , \"publicKey<S2SV_blank>for<S2SV_blank>device<S2SV_blank>number<S2SV_blank>%d:<S2SV_blank>%s\" , i + 1 , s_token ) ; if ( strlen ( s_token ) % 2 != 0 ) { if ( verbose ) D ( debug_file , \"Length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>not<S2SV_blank>even\" , i + 1 ) ; goto err ; } devices [ i ] . key_len = strlen ( s_token ) / 2 ; if ( verbose ) D ( debug_file , \"Length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>%zu\" , i + 1 , devices [ i ] . key_len ) ; devices [ i ] . publicKey = malloc ( ( sizeof ( unsigned char ) * devices [ i ] . key_len ) ) ; if ( ! devices [ i ] . publicKey ) { if ( verbose ) D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>publicKey<S2SV_blank>number<S2SV_blank>%d\" , i ) ; goto err ; } for ( j = 0 ; j < devices [ i ] . key_len ; j ++ ) { unsigned int x ; if ( sscanf ( & s_token [ 2 * j ] , \"%2x\" , & x ) != 1 ) { if ( verbose ) D ( debug_file , \"Invalid<S2SV_blank>hex<S2SV_blank>number<S2SV_blank>in<S2SV_blank>key\" ) ; goto err ; } devices [ i ] . publicKey [ j ] = ( unsigned char ) x ; } i ++ ; } } } if ( verbose ) D ( debug_file , \"Found<S2SV_blank>%d<S2SV_blank>device(s)<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\" , * n_devs , username ) ; retval = 1 ; goto out ; err : for ( i = 0 ; i < * n_devs ; i ++ ) { free ( devices [ i ] . keyHandle ) ; free ( devices [ i ] . publicKey ) ; devices [ i ] . keyHandle = NULL ; devices [ i ] . publicKey = NULL ; } * n_devs = 0 ; out : if ( buf ) { free ( buf ) ; buf = NULL ; } if ( opwfile ) fclose ( opwfile ) ; <S2SV_StartBug> else if ( fd >= 0 ) <S2SV_EndBug> close ( fd ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> authfile , O_RDONLY | O_CLOEXEC | O_NOCTTY <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; goto err ; } else { fd = - 1 <S2SV_ModStart> opwfile ) ; <S2SV_ModEnd> if ( fd <S2SV_ModStart> if ( fd != - 1 <S2SV_ModEnd> ) close (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 void pdf_load_pages_kids ( FILE * fp , pdf_t * pdf ) { int i , id , dummy ; char * buf , * c ; long start , sz ; start = ftell ( fp ) ; for ( i = 0 ; i < pdf -> n_xrefs ; i ++ ) { if ( pdf -> xrefs [ i ] . version && ( pdf -> xrefs [ i ] . end != 0 ) ) { fseek ( fp , pdf -> xrefs [ i ] . start , SEEK_SET ) ; while ( SAFE_F ( fp , ( fgetc ( fp ) != 't' ) ) ) ; sz = pdf -> xrefs [ i ] . end - ftell ( fp ) ; <S2SV_StartBug> buf = malloc ( sz + 1 ) ; <S2SV_EndBug> SAFE_E ( fread ( buf , 1 , sz , fp ) , sz , \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>/Root.\\\\n\" ) ; buf [ sz ] = '\\\\0' ; if ( ! ( c = strstr ( buf , \"/Root\" ) ) ) { free ( buf ) ; continue ; } id = atoi ( c + strlen ( \"/Root\" ) + 1 ) ; free ( buf ) ; buf = get_object ( fp , id , & pdf -> xrefs [ i ] , NULL , & dummy ) ; if ( ! buf || ! ( c = strstr ( buf , \"/Pages\" ) ) ) { free ( buf ) ; continue ; } id = atoi ( c + strlen ( \"/Pages\" ) + 1 ) ; load_kids ( fp , id , & pdf -> xrefs [ i ] ) ; free ( buf ) ; } } fseek ( fp , start , SEEK_SET ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; buf = safe_calloc <S2SV_ModEnd> ( sz +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12135\n\n```\nCWE-190 <S2SV_StartBug> static mongo_message * mongo_message_create ( int len , int id , int responseTo , int op ) { <S2SV_EndBug> mongo_message * mm = ( mongo_message * ) bson_malloc ( len ) ; if ( ! id ) id = rand ( ) ; <S2SV_StartBug> mm -> head . len = len ; <S2SV_EndBug> mm -> head . id = id ; mm -> head . responseTo = responseTo ; mm -> head . op = op ; return mm ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * mongo_message_create ( size_t <S2SV_ModEnd> len , int <S2SV_ModStart> . len = ( int )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14173\n\n```\nCWE-190 static Image * ReadTXTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char colorspace [ MagickPathExtent ] , text [ MagickPathExtent ] ; Image * image ; long x_offset , y_offset ; PixelInfo pixel ; MagickBooleanType status ; QuantumAny range ; register ssize_t i , x ; register Quantum * q ; ssize_t count , type , y ; unsigned long depth , height , max_value , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( text , 0 , sizeof ( text ) ) ; ( void ) ReadBlobString ( image , text ) ; if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { width = 0 ; height = 0 ; max_value = 0 ; * colorspace = '\\\\0' ; count = ( ssize_t ) sscanf ( text + 32 , \"%lu,%lu,%lu,%s\" , & width , & height , & max_value , colorspace ) ; if ( ( count != 4 ) || ( width == 0 ) || ( height == 0 ) || ( max_value == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = width ; image -> rows = height ; <S2SV_StartBug> for ( depth = 1 ; ( GetQuantumRange ( depth ) + 1 ) < max_value ; depth ++ ) ; <S2SV_EndBug> image -> depth = depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; LocaleLower ( colorspace ) ; i = ( ssize_t ) strlen ( colorspace ) - 1 ; image -> alpha_trait = UndefinedPixelTrait ; if ( ( i > 0 ) && ( colorspace [ i ] == 'a' ) ) { colorspace [ i ] = '\\\\0' ; image -> alpha_trait = BlendPixelTrait ; } type = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , colorspace ) ; if ( type < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; ( void ) SetImageBackgroundColor ( image , exception ) ; ( void ) SetImageColorspace ( image , ( ColorspaceType ) type , exception ) ; GetPixelInfo ( image , & pixel ) ; range = GetQuantumRange ( image -> depth ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { double alpha , black , blue , green , red ; red = 0.0 ; green = 0.0 ; blue = 0.0 ; black = 0.0 ; alpha = 0.0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( ReadBlobString ( image , text ) == ( char * ) NULL ) break ; switch ( image -> colorspace ) { case GRAYColorspace : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & alpha ) ; green = red ; blue = red ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]\" , & x_offset , & y_offset , & red ) ; green = red ; blue = red ; break ; } case CMYKColorspace : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & black , & alpha ) ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & black ) ; break ; } default : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & alpha ) ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue ) ; break ; } } if ( strchr ( text , '%' ) != ( char * ) NULL ) { red *= 0.01 * range ; green *= 0.01 * range ; blue *= 0.01 * range ; black *= 0.01 * range ; alpha *= 0.01 * range ; } if ( image -> colorspace == LabColorspace ) { green += ( range + 1 ) / 2.0 ; blue += ( range + 1 ) / 2.0 ; } pixel . red = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( red + 0.5 ) , range ) ; pixel . green = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( green + 0.5 ) , range ) ; pixel . blue = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( blue + 0.5 ) , range ) ; pixel . black = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( black + 0.5 ) , range ) ; pixel . alpha = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( alpha + 0.5 ) , range ) ; q = GetAuthenticPixels ( image , ( ssize_t ) x_offset , ( ssize_t ) y_offset , 1 , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) continue ; SetPixelViaPixelInfo ( image , & pixel , q ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } ( void ) ReadBlobString ( image , text ) ; if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> depth ++ ) if ( depth >= 64 ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12894\n\n```\nCWE-125 const char * linkaddr_string ( netdissect_options * ndo , const u_char * ep , const unsigned int type , const unsigned int len ) { register u_int i ; register char * cp ; <S2SV_StartBug> register struct enamemem * tp ; <S2SV_EndBug> if ( len == 0 ) return ( \"<empty>\" ) ; if ( type == LINKADDR_ETHER && len == ETHER_ADDR_LEN ) return ( etheraddr_string ( ndo , ep ) ) ; if ( type == LINKADDR_FRELAY ) return ( q922_string ( ndo , ep , len ) ) ; tp = lookup_bytestring ( ndo , ep , len ) ; <S2SV_StartBug> if ( tp -> e_name ) <S2SV_EndBug> return ( tp -> e_name ) ; tp -> e_name = cp = ( char * ) malloc ( len * 3 ) ; <S2SV_StartBug> if ( tp -> e_name == NULL ) <S2SV_EndBug> ( * ndo -> ndo_error ) ( ndo , \"linkaddr_string:<S2SV_blank>malloc\" ) ; * cp ++ = hex [ * ep >> 4 ] ; * cp ++ = hex [ * ep ++ & 0xf ] ; for ( i = len - 1 ; i > 0 ; -- i ) { * cp ++ = ':' ; * cp ++ = hex [ * ep >> 4 ] ; * cp ++ = hex [ * ep ++ & 0xf ] ; } * cp = '\\\\0' ; <S2SV_StartBug> return ( tp -> e_name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; register struct bsnamemem <S2SV_ModEnd> * tp ; <S2SV_ModStart> ( tp -> bs_name ) return ( tp -> bs_name ) ; tp -> bs_name <S2SV_ModEnd> = cp = <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ( tp -> bs_name <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7854\n\n```\nCWE-125 static size_t consume_init_expr ( ut8 * buf , ut8 * max , ut8 eoc , void * out , ut32 * offset ) { ut32 i = 0 ; while ( buf + i < max && buf [ i ] != eoc ) { <S2SV_StartBug> i += 1 ; <S2SV_EndBug> } if ( buf [ i ] != eoc ) { return 0 ; } if ( offset ) { * offset += i + 1 ; } return i + 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { i ++ <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9793\n\n```\nCWE-119 int sock_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; int val ; int valbool ; struct linger ling ; int ret = 0 ; if ( optname == SO_BINDTODEVICE ) return sock_setbindtodevice ( sk , optval , optlen ) ; if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; valbool = val ? 1 : 0 ; lock_sock ( sk ) ; switch ( optname ) { case SO_DEBUG : if ( val && ! capable ( CAP_NET_ADMIN ) ) ret = - EACCES ; else sock_valbool_flag ( sk , SOCK_DBG , valbool ) ; break ; case SO_REUSEADDR : sk -> sk_reuse = ( valbool ? SK_CAN_REUSE : SK_NO_REUSE ) ; break ; case SO_REUSEPORT : sk -> sk_reuseport = valbool ; break ; case SO_TYPE : case SO_PROTOCOL : case SO_DOMAIN : case SO_ERROR : ret = - ENOPROTOOPT ; break ; case SO_DONTROUTE : sock_valbool_flag ( sk , SOCK_LOCALROUTE , valbool ) ; break ; case SO_BROADCAST : sock_valbool_flag ( sk , SOCK_BROADCAST , valbool ) ; break ; case SO_SNDBUF : val = min_t ( u32 , val , sysctl_wmem_max ) ; set_sndbuf : sk -> sk_userlocks |= SOCK_SNDBUF_LOCK ; <S2SV_StartBug> sk -> sk_sndbuf = max_t ( u32 , val * 2 , SOCK_MIN_SNDBUF ) ; <S2SV_EndBug> sk -> sk_write_space ( sk ) ; break ; case SO_SNDBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_sndbuf ; case SO_RCVBUF : val = min_t ( u32 , val , sysctl_rmem_max ) ; set_rcvbuf : sk -> sk_userlocks |= SOCK_RCVBUF_LOCK ; <S2SV_StartBug> sk -> sk_rcvbuf = max_t ( u32 , val * 2 , SOCK_MIN_RCVBUF ) ; <S2SV_EndBug> break ; case SO_RCVBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_rcvbuf ; case SO_KEEPALIVE : # ifdef CONFIG_INET if ( sk -> sk_protocol == IPPROTO_TCP && sk -> sk_type == SOCK_STREAM ) tcp_set_keepalive ( sk , valbool ) ; # endif sock_valbool_flag ( sk , SOCK_KEEPOPEN , valbool ) ; break ; case SO_OOBINLINE : sock_valbool_flag ( sk , SOCK_URGINLINE , valbool ) ; break ; case SO_NO_CHECK : sk -> sk_no_check_tx = valbool ; break ; case SO_PRIORITY : if ( ( val >= 0 && val <= 6 ) || ns_capable ( sock_net ( sk ) -> user_ns , CAP_NET_ADMIN ) ) sk -> sk_priority = val ; else ret = - EPERM ; break ; case SO_LINGER : if ( optlen < sizeof ( ling ) ) { ret = - EINVAL ; break ; } if ( copy_from_user ( & ling , optval , sizeof ( ling ) ) ) { ret = - EFAULT ; break ; } if ( ! ling . l_onoff ) sock_reset_flag ( sk , SOCK_LINGER ) ; else { # if ( BITS_PER_LONG == 32 ) if ( ( unsigned int ) ling . l_linger >= MAX_SCHEDULE_TIMEOUT / HZ ) sk -> sk_lingertime = MAX_SCHEDULE_TIMEOUT ; else # endif sk -> sk_lingertime = ( unsigned int ) ling . l_linger * HZ ; sock_set_flag ( sk , SOCK_LINGER ) ; } break ; case SO_BSDCOMPAT : sock_warn_obsolete_bsdism ( \"setsockopt\" ) ; break ; case SO_PASSCRED : if ( valbool ) set_bit ( SOCK_PASSCRED , & sock -> flags ) ; else clear_bit ( SOCK_PASSCRED , & sock -> flags ) ; break ; case SO_TIMESTAMP : case SO_TIMESTAMPNS : if ( valbool ) { if ( optname == SO_TIMESTAMP ) sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; else sock_set_flag ( sk , SOCK_RCVTSTAMPNS ) ; sock_set_flag ( sk , SOCK_RCVTSTAMP ) ; sock_enable_timestamp ( sk , SOCK_TIMESTAMP ) ; } else { sock_reset_flag ( sk , SOCK_RCVTSTAMP ) ; sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; } break ; case SO_TIMESTAMPING : if ( val & ~ SOF_TIMESTAMPING_MASK ) { ret = - EINVAL ; break ; } if ( val & SOF_TIMESTAMPING_OPT_ID && ! ( sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_ID ) ) { if ( sk -> sk_protocol == IPPROTO_TCP && sk -> sk_type == SOCK_STREAM ) { if ( ( 1 << sk -> sk_state ) & ( TCPF_CLOSE | TCPF_LISTEN ) ) { ret = - EINVAL ; break ; } sk -> sk_tskey = tcp_sk ( sk ) -> snd_una ; } else { sk -> sk_tskey = 0 ; } } sk -> sk_tsflags = val ; if ( val & SOF_TIMESTAMPING_RX_SOFTWARE ) sock_enable_timestamp ( sk , SOCK_TIMESTAMPING_RX_SOFTWARE ) ; else sock_disable_timestamp ( sk , ( 1UL << SOCK_TIMESTAMPING_RX_SOFTWARE ) ) ; break ; case SO_RCVLOWAT : if ( val < 0 ) val = INT_MAX ; sk -> sk_rcvlowat = val ? : 1 ; break ; case SO_RCVTIMEO : ret = sock_set_timeout ( & sk -> sk_rcvtimeo , optval , optlen ) ; break ; case SO_SNDTIMEO : ret = sock_set_timeout ( & sk -> sk_sndtimeo , optval , optlen ) ; break ; case SO_ATTACH_FILTER : ret = - EINVAL ; if ( optlen == sizeof ( struct sock_fprog ) ) { struct sock_fprog fprog ; ret = - EFAULT ; if ( copy_from_user ( & fprog , optval , sizeof ( fprog ) ) ) break ; ret = sk_attach_filter ( & fprog , sk ) ; } break ; case SO_ATTACH_BPF : ret = - EINVAL ; if ( optlen == sizeof ( u32 ) ) { u32 ufd ; ret = - EFAULT ; if ( copy_from_user ( & ufd , optval , sizeof ( ufd ) ) ) break ; ret = sk_attach_bpf ( ufd , sk ) ; } break ; case SO_ATTACH_REUSEPORT_CBPF : ret = - EINVAL ; if ( optlen == sizeof ( struct sock_fprog ) ) { struct sock_fprog fprog ; ret = - EFAULT ; if ( copy_from_user ( & fprog , optval , sizeof ( fprog ) ) ) break ; ret = sk_reuseport_attach_filter ( & fprog , sk ) ; } break ; case SO_ATTACH_REUSEPORT_EBPF : ret = - EINVAL ; if ( optlen == sizeof ( u32 ) ) { u32 ufd ; ret = - EFAULT ; if ( copy_from_user ( & ufd , optval , sizeof ( ufd ) ) ) break ; ret = sk_reuseport_attach_bpf ( ufd , sk ) ; } break ; case SO_DETACH_FILTER : ret = sk_detach_filter ( sk ) ; break ; case SO_LOCK_FILTER : if ( sock_flag ( sk , SOCK_FILTER_LOCKED ) && ! valbool ) ret = - EPERM ; else sock_valbool_flag ( sk , SOCK_FILTER_LOCKED , valbool ) ; break ; case SO_PASSSEC : if ( valbool ) set_bit ( SOCK_PASSSEC , & sock -> flags ) ; else clear_bit ( SOCK_PASSSEC , & sock -> flags ) ; break ; case SO_MARK : if ( ! ns_capable ( sock_net ( sk ) -> user_ns , CAP_NET_ADMIN ) ) ret = - EPERM ; else sk -> sk_mark = val ; break ; case SO_RXQ_OVFL : sock_valbool_flag ( sk , SOCK_RXQ_OVFL , valbool ) ; break ; case SO_WIFI_STATUS : sock_valbool_flag ( sk , SOCK_WIFI_STATUS , valbool ) ; break ; case SO_PEEK_OFF : if ( sock -> ops -> set_peek_off ) ret = sock -> ops -> set_peek_off ( sk , val ) ; else ret = - EOPNOTSUPP ; break ; case SO_NOFCS : sock_valbool_flag ( sk , SOCK_NOFCS , valbool ) ; break ; case SO_SELECT_ERR_QUEUE : sock_valbool_flag ( sk , SOCK_SELECT_ERR_QUEUE , valbool ) ; break ; # ifdef CONFIG_NET_RX_BUSY_POLL case SO_BUSY_POLL : if ( ( val > sk -> sk_ll_usec ) && ! capable ( CAP_NET_ADMIN ) ) ret = - EPERM ; else { if ( val < 0 ) ret = - EINVAL ; else sk -> sk_ll_usec = val ; } break ; # endif case SO_MAX_PACING_RATE : sk -> sk_max_pacing_rate = val ; sk -> sk_pacing_rate = min ( sk -> sk_pacing_rate , sk -> sk_max_pacing_rate ) ; break ; case SO_INCOMING_CPU : sk -> sk_incoming_cpu = val ; break ; case SO_CNX_ADVICE : if ( val == 1 ) dst_negative_advice ( sk ) ; break ; default : ret = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = max_t ( int <S2SV_ModEnd> , val * <S2SV_ModStart> = max_t ( int <S2SV_ModEnd> , val *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6435\n\n```\nCWE-119 static plist_t parse_string_node ( const char * * bnode , uint64_t size ) { plist_data_t data = plist_new_plist_data ( ) ; data -> type = PLIST_STRING ; data -> strval = ( char * ) malloc ( sizeof ( char ) * ( size + 1 ) ) ; <S2SV_StartBug> memcpy ( data -> strval , * bnode , size ) ; <S2SV_EndBug> data -> strval [ size ] = '\\\\0' ; data -> length = strlen ( data -> strval ) ; return node_create ( NULL , data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( ! data -> strval ) { plist_free_data ( data ) ; PLIST_BIN_ERR ( \"%s:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>%\" PRIu64 \"<S2SV_blank>bytes\\\\n\" , __func__ , sizeof ( char ) * ( size + 1 ) ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14465\n\n```\nCWE-125 static int rsvp_obj_print ( netdissect_options * ndo , const u_char * pptr , u_int plen , const u_char * tptr , const char * ident , u_int tlen , const struct rsvp_common_header * rsvp_com_header ) { const struct rsvp_object_header * rsvp_obj_header ; const u_char * obj_tptr ; union { const struct rsvp_obj_integrity_t * rsvp_obj_integrity ; const struct rsvp_obj_frr_t * rsvp_obj_frr ; } obj_ptr ; u_short rsvp_obj_len , rsvp_obj_ctype , obj_tlen , intserv_serv_tlen ; int hexdump , processed , padbytes , error_code , error_value , i , sigcheck ; union { float f ; uint32_t i ; } bw ; uint8_t namelen ; u_int action , subchannel ; while ( tlen >= sizeof ( struct rsvp_object_header ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct rsvp_object_header ) ) ; rsvp_obj_header = ( const struct rsvp_object_header * ) tptr ; rsvp_obj_len = EXTRACT_16BITS ( rsvp_obj_header -> length ) ; rsvp_obj_ctype = rsvp_obj_header -> ctype ; if ( rsvp_obj_len % 4 ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4\" , ident , rsvp_obj_len ) ) ; return - 1 ; } if ( rsvp_obj_len < sizeof ( struct rsvp_object_header ) ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>too<S2SV_blank>short<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%lu\" , ident , rsvp_obj_len , ( unsigned long ) sizeof ( const struct rsvp_object_header ) ) ) ; return - 1 ; } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>Object<S2SV_blank>(%u)<S2SV_blank>Flags:<S2SV_blank>[%s\" , ident , tok2str ( rsvp_obj_values , \"Unknown\" , rsvp_obj_header -> class_num ) , rsvp_obj_header -> class_num , ( ( rsvp_obj_header -> class_num ) & 0x80 ) ? \"ignore\" : \"reject\" ) ) ; if ( rsvp_obj_header -> class_num > 128 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ( ( rsvp_obj_header -> class_num ) & 0x40 ) ? \"and<S2SV_blank>forward\" : \"silently\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>if<S2SV_blank>unknown],<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( rsvp_ctype_values , \"Unknown\" , ( ( rsvp_obj_header -> class_num ) << 8 ) + rsvp_obj_ctype ) , rsvp_obj_ctype , rsvp_obj_len ) ) ; if ( tlen < rsvp_obj_len ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>goes<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>objects<S2SV_blank>TLV\" , ident ) ) ; return - 1 ; } obj_tptr = tptr + sizeof ( struct rsvp_object_header ) ; obj_tlen = rsvp_obj_len - sizeof ( struct rsvp_object_header ) ; if ( ! ND_TTEST2 ( * tptr , rsvp_obj_len ) ) return - 1 ; hexdump = FALSE ; switch ( rsvp_obj_header -> class_num ) { case RSVP_OBJ_SESSION : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + 5 ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in6_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + sizeof ( struct in6_addr ) + 1 ) , EXTRACT_16BITS ( obj_tptr + sizeof ( struct in6_addr ) + 2 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 36 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ip6addr_string ( ndo , obj_tptr + 20 ) ) ) ; obj_tlen -= 36 ; obj_tptr += 36 ; break ; case RSVP_CTYPE_14 : if ( obj_tlen < 26 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%08x,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ip6addr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 26 ; obj_tptr += 26 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : case RSVP_CTYPE_UNI_IPV4 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CONFIRM : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_NOTIFY_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SUGGESTED_LABEL : case RSVP_OBJ_UPSTREAM_LABEL : case RSVP_OBJ_RECOVERY_LABEL : case RSVP_OBJ_LABEL : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Generalized<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Waveband<S2SV_blank>ID:<S2SV_blank>%u%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>Label:<S2SV_blank>%u,<S2SV_blank>Stop<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_STYLE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Reservation<S2SV_blank>Style:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]\" , ident , tok2str ( rsvp_resstyle_values , \"Unknown\" , EXTRACT_24BITS ( obj_tptr + 1 ) ) , * ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TEMPLATE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \",%s<S2SV_blank>merge<S2SV_blank>capability\" , ( ( * ( obj_tptr + 4 ) ) & 0x80 ) ? \"no\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 4 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 6 ) ) & 0xfff ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Maximum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 8 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 10 ) ) & 0xfff ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum/Maximum<S2SV_blank>DLCI:<S2SV_blank>%u/%u,<S2SV_blank>%s%s<S2SV_blank>bit<S2SV_blank>DLCI\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0x7fffff , ( EXTRACT_32BITS ( obj_tptr + 8 ) ) & 0x7fffff , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 0 ) ? \"10\" : \"\" , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 2 ) ? \"23\" : \"\" ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>LSP<S2SV_blank>Encoding<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , tok2str ( gmpls_encoding_values , \"Unknown\" , * obj_tptr ) , * obj_tptr ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Switching<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Payload<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%04x)\" , ident , tok2str ( gmpls_switch_cap_values , \"Unknown\" , * ( obj_tptr + 1 ) ) , * ( obj_tptr + 1 ) , tok2str ( gmpls_payload_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RRO : case RSVP_OBJ_ERO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : while ( obj_tlen >= 4 ) { u_char length ; ND_TCHECK2 ( * obj_tptr , 4 ) ; length = * ( obj_tptr + 1 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_xro_values , \"Unknown<S2SV_blank>%u\" , RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) , length ) ) ; if ( length == 0 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>ERROR:<S2SV_blank>zero<S2SV_blank>length<S2SV_blank>ERO<S2SV_blank>subtype\" , ident ) ) ; break ; } switch ( RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) { u_char prefix_length ; case RSVP_OBJ_XRO_IPV4 : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; prefix_length = * ( obj_tptr + 6 ) ; if ( prefix_length != 32 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>Prefix<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>32\" , prefix_length ) ) ; goto invalid ; } ND_PRINT ( ( ndo , \",<S2SV_blank>%s,<S2SV_blank>%s/%u,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , RSVP_OBJ_XRO_MASK_LOOSE ( * obj_tptr ) ? \"Loose\" : \"Strict\" , ipaddr_string ( ndo , obj_tptr + 2 ) , * ( obj_tptr + 6 ) , bittok2str ( rsvp_obj_rro_flag_values , \"none\" , * ( obj_tptr + 7 ) ) ) ) ; break ; case RSVP_OBJ_XRO_LABEL : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x),<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%u\" , bittok2str ( rsvp_obj_rro_label_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) , tok2str ( rsvp_ctype_values , \"Unknown\" , * ( obj_tptr + 3 ) + 256 * RSVP_OBJ_RRO ) , * ( obj_tptr + 3 ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; } obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_HELLO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Instance:<S2SV_blank>0x%08x,<S2SV_blank>Destination<S2SV_blank>Instance:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RESTART_CAPABILITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Restart<S2SV_blank><S2SV_blank>Time:<S2SV_blank>%ums,<S2SV_blank>Recovery<S2SV_blank>Time:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SESSION_ATTRIBUTE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 4 ) return - 1 ; namelen = * ( obj_tptr + 3 ) ; if ( obj_tlen < 4 + namelen ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Session<S2SV_blank>Name:<S2SV_blank>\" , ident ) ) ; for ( i = 0 ; i < namelen ; i ++ ) safeputchar ( ndo , * ( obj_tptr + 4 + i ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x)\" , ident , ( int ) * obj_tptr , ( int ) * ( obj_tptr + 1 ) , bittok2str ( rsvp_session_attribute_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 + * ( obj_tptr + 3 ) ; obj_tptr += 4 + * ( obj_tptr + 3 ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_GENERALIZED_UNI : switch ( rsvp_obj_ctype ) { int subobj_type , af , subobj_len , total_subobj_len ; case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; total_subobj_len = obj_tlen ; while ( total_subobj_len > 0 ) { if ( total_subobj_len < 4 ) goto invalid ; subobj_len = EXTRACT_16BITS ( obj_tptr ) ; subobj_type = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) >> 8 ; af = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) & 0x00FF ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>AF:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_generalized_uni_values , \"Unknown\" , subobj_type ) , subobj_type , tok2str ( af_values , \"Unknown\" , af ) , af , subobj_len ) ) ; if ( subobj_len < 4 || subobj_len > total_subobj_len ) goto invalid ; switch ( subobj_type ) { case RSVP_GEN_UNI_SUBOBJ_SOURCE_TNA_ADDRESS : case RSVP_GEN_UNI_SUBOBJ_DESTINATION_TNA_ADDRESS : switch ( af ) { case AFNUM_INET : if ( subobj_len < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv4<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_INET6 : if ( subobj_len < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv6<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_NSAP : if ( subobj_len ) { hexdump = TRUE ; } break ; } break ; case RSVP_GEN_UNI_SUBOBJ_DIVERSITY : if ( subobj_len ) { hexdump = TRUE ; } break ; case RSVP_GEN_UNI_SUBOBJ_EGRESS_LABEL : if ( subobj_len < 16 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>U-bit:<S2SV_blank>%x,<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u,<S2SV_blank>Logical<S2SV_blank>port<S2SV_blank>id:<S2SV_blank>%u,<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 31 ) , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0xFF ) , EXTRACT_32BITS ( obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 12 ) ) ) ; break ; case RSVP_GEN_UNI_SUBOBJ_SERVICE_LEVEL : if ( subobj_len < 8 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Service<S2SV_blank>level:<S2SV_blank>%u\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 24 ) ) ; break ; default : hexdump = TRUE ; break ; } total_subobj_len -= subobj_len ; obj_tptr += subobj_len ; obj_tlen += subobj_len ; } if ( total_subobj_len ) { hexdump = TRUE ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RSVP_HOP : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; if ( obj_tlen ) hexdump = TRUE ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 16 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; hexdump = TRUE ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_TIME_VALUES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Refresh<S2SV_blank>Period:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TSPEC : case RSVP_OBJ_ADSPEC : case RSVP_OBJ_FLOWSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Msg-Version:<S2SV_blank>%u,<S2SV_blank>length:<S2SV_blank>%u\" , ident , ( * obj_tptr & 0xf0 ) >> 4 , EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( obj_tlen >= 4 ) { intserv_serv_tlen = EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Service<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>break<S2SV_blank>bit<S2SV_blank>%s<S2SV_blank>set,<S2SV_blank>Service<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_intserv_service_type_values , \"unknown\" , * ( obj_tptr ) ) , * ( obj_tptr ) , ( * ( obj_tptr + 1 ) & 0x80 ) ? \"\" : \"not\" , intserv_serv_tlen ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( intserv_serv_tlen >= 4 ) { processed = rsvp_intserv_print ( ndo , obj_tptr , obj_tlen ) ; if ( processed == 0 ) break ; obj_tlen -= processed ; intserv_serv_tlen -= processed ; obj_tptr += processed ; } } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FILTERSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flow<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_24BITS ( obj_tptr + 17 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FASTREROUTE : obj_ptr . rsvp_obj_frr = ( const struct rsvp_obj_frr_t * ) obj_tptr ; switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_frr_t ) ) return - 1 ; bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include-any:<S2SV_blank>0x%08x,<S2SV_blank>Exclude-any:<S2SV_blank>0x%08x,<S2SV_blank>Include-all:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_all ) ) ) ; obj_tlen -= sizeof ( struct rsvp_obj_frr_t ) ; obj_tptr += sizeof ( struct rsvp_obj_frr_t ) ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 16 ) return - 1 ; bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include<S2SV_blank>Colors:<S2SV_blank>0x%08x,<S2SV_blank>Exclude<S2SV_blank>Colors:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_DETOUR : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : while ( obj_tlen >= 8 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>PLR-ID:<S2SV_blank>%s,<S2SV_blank>Avoid-Node-ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CLASSTYPE : case RSVP_OBJ_CLASSTYPE_OLD : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>CT:<S2SV_blank>%u\" , <S2SV_EndBug> ident , EXTRACT_32BITS ( obj_tptr ) & 0x7 ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ERROR_SPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; error_code = * ( obj_tptr + 5 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 6 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + 4 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE : case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE_OLD : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_diffserv_te_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>Unknown<S2SV_blank>Error<S2SV_blank>Value<S2SV_blank>(%u)\" , error_value ) ) ; break ; } obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; error_code = * ( obj_tptr + 17 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 18 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + 16 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : break ; } obj_tlen -= 20 ; obj_tptr += 20 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_PROPERTIES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; padbytes = EXTRACT_16BITS ( obj_tptr + 2 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>TLV<S2SV_blank>count:<S2SV_blank>%u,<S2SV_blank>padding<S2SV_blank>bytes:<S2SV_blank>%u\" , ident , EXTRACT_16BITS ( obj_tptr ) , padbytes ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 2 + padbytes ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(0x%02x),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_prop_tlv_values , \"unknown\" , * obj_tptr ) , * obj_tptr , * ( obj_tptr + 1 ) ) ) ; if ( obj_tlen < * ( obj_tptr + 1 ) ) return - 1 ; if ( * ( obj_tptr + 1 ) < 2 ) return - 1 ; print_unknown_data ( ndo , obj_tptr + 2 , \"\\\\n\\\\t\\\\t\" , * ( obj_tptr + 1 ) - 2 ) ; obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_MESSAGE_ID : case RSVP_OBJ_MESSAGE_ID_ACK : case RSVP_OBJ_MESSAGE_ID_LIST : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[0x%02x],<S2SV_blank>epoch:<S2SV_blank>%u\" , ident , * obj_tptr , EXTRACT_24BITS ( obj_tptr + 1 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message-ID<S2SV_blank>0x%08x<S2SV_blank>(%u)\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_INTEGRITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_integrity_t ) ) return - 1 ; obj_ptr . rsvp_obj_integrity = ( const struct rsvp_obj_integrity_t * ) obj_tptr ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Key-ID<S2SV_blank>0x%04x%08x,<S2SV_blank>Sequence<S2SV_blank>0x%08x%08x,<S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , EXTRACT_16BITS ( obj_ptr . rsvp_obj_integrity -> key_id ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> key_id + 2 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence + 4 ) , bittok2str ( rsvp_obj_integrity_flag_values , \"none\" , obj_ptr . rsvp_obj_integrity -> flags ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>MD5-sum<S2SV_blank>0x%08x%08x%08x%08x<S2SV_blank>\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 4 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 8 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 12 ) ) ) ; sigcheck = signature_verify ( ndo , pptr , plen , obj_ptr . rsvp_obj_integrity -> digest , rsvp_clear_checksum , rsvp_com_header ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , tok2str ( signature_check_values , \"Unknown\" , sigcheck ) ) ) ; obj_tlen += sizeof ( struct rsvp_obj_integrity_t ) ; obj_tptr += sizeof ( struct rsvp_obj_integrity_t ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ADMIN_STATUS : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , bittok2str ( rsvp_obj_admin_status_flag_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_SET : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; action = ( EXTRACT_16BITS ( obj_tptr ) >> 8 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Action:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_label_set_action_values , \"Unknown\" , action ) , action , ( ( EXTRACT_32BITS ( obj_tptr ) & 0x7F ) ) ) ) ; switch ( action ) { case LABEL_SET_INCLUSIVE_RANGE : case LABEL_SET_EXCLUSIVE_RANGE : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>range:<S2SV_blank>%u,<S2SV_blank>End<S2SV_blank>range:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : obj_tlen -= 4 ; obj_tptr += 4 ; subchannel = 1 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subchannel<S2SV_blank>#%u:<S2SV_blank>%u\" , ident , subchannel , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; subchannel ++ ; } break ; } break ; default : hexdump = TRUE ; } case RSVP_OBJ_S2L : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } case RSVP_OBJ_SCOPE : case RSVP_OBJ_POLICY_DATA : case RSVP_OBJ_ACCEPT_LABEL_SET : case RSVP_OBJ_PROTECTION : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 || hexdump == TRUE ) print_unknown_data ( ndo , tptr + sizeof ( struct rsvp_object_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , rsvp_obj_len - sizeof ( struct rsvp_object_header ) ) ; tptr += rsvp_obj_len ; tlen -= rsvp_obj_len ; } return 0 ; invalid : ND_PRINT ( ( ndo , \"%s\" , istr ) ) ; return - 1 ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case RSVP_CTYPE_1 : ND_TCHECK_32BITS ( obj_tptr ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 int udpv6_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; int is_udplite = IS_UDPLITE ( sk ) ; int is_udp4 ; <S2SV_StartBug> bool slow ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( struct sockaddr_in6 ) ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len ) ; if ( np -> rxpmtu && np -> rxopt . bits . rxpmtu ) return ipv6_recv_rxpmtu ( sk , msg , len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; is_udp4 = ( skb -> protocol == htons ( ETH_P_IP ) ) ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { if ( udp_lib_checksum_complete ( skb ) ) goto csum_copy_err ; } if ( skb_csum_unnecessary ( skb ) ) err = skb_copy_datagram_iovec ( skb , sizeof ( struct udphdr ) , msg -> msg_iov , copied ) ; else { err = skb_copy_and_csum_datagram_iovec ( skb , sizeof ( struct udphdr ) , msg -> msg_iov ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udpv6_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) { if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; } sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( msg -> msg_name ) { struct sockaddr_in6 * sin6 ; sin6 = ( struct sockaddr_in6 * ) msg -> msg_name ; sin6 -> sin6_family = AF_INET6 ; sin6 -> sin6_port = udp_hdr ( skb ) -> source ; sin6 -> sin6_flowinfo = 0 ; if ( is_udp4 ) { ipv6_addr_set_v4mapped ( ip_hdr ( skb ) -> saddr , & sin6 -> sin6_addr ) ; sin6 -> sin6_scope_id = 0 ; } else { sin6 -> sin6_addr = ipv6_hdr ( skb ) -> saddr ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , IP6CB ( skb ) -> iif ) ; } <S2SV_StartBug> } <S2SV_EndBug> if ( is_udp4 ) { if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; } else { if ( np -> rxopt . all ) ip6_datagram_recv_ctl ( sk , msg , skb ) ; } err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { if ( is_udp4 ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } else { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } } unlock_sock_fast ( sk , slow ) ; if ( noblock ) return - EAGAIN ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bool slow <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ; } * addr_len = sizeof ( * sin6 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9388\n\n```\nCWE-000 static int ras_getdatastd ( jas_stream_t * in , ras_hdr_t * hdr , ras_cmap_t * cmap , jas_image_t * image ) { int pad ; int nz ; int z ; int c ; int y ; int x ; int v ; int i ; jas_matrix_t * data [ 3 ] ; cmap = 0 ; <S2SV_StartBug> for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { <S2SV_EndBug> <S2SV_StartBug> data [ i ] = jas_matrix_create ( 1 , jas_image_width ( image ) ) ; <S2SV_EndBug> assert ( data [ i ] ) ; } pad = RAS_ROWSIZE ( hdr ) - ( hdr -> width * hdr -> depth + 7 ) / 8 ; for ( y = 0 ; y < hdr -> height ; y ++ ) { nz = 0 ; z = 0 ; for ( x = 0 ; x < hdr -> width ; x ++ ) { while ( nz < hdr -> depth ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) { <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } <S2SV_StartBug> z = ( z << 8 ) | c ; <S2SV_EndBug> nz += 8 ; } v = ( z >> ( nz - hdr -> depth ) ) & RAS_ONES ( hdr -> depth ) ; z &= RAS_ONES ( nz - hdr -> depth ) ; nz -= hdr -> depth ; if ( jas_image_numcmpts ( image ) == 3 ) { jas_matrix_setv ( data [ 0 ] , x , ( RAS_GETRED ( v ) ) ) ; jas_matrix_setv ( data [ 1 ] , x , ( RAS_GETGREEN ( v ) ) ) ; jas_matrix_setv ( data [ 2 ] , x , ( RAS_GETBLUE ( v ) ) ) ; } else { jas_matrix_setv ( data [ 0 ] , x , ( v ) ) ; } } if ( pad ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) { return - 1 ; } } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { if ( jas_image_writecmpt ( image , i , 0 , y , hdr -> width , 1 , data [ i ] ) ) { return - 1 ; } } } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { jas_matrix_destroy ( data [ i ] ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; assert ( <S2SV_ModEnd> jas_image_numcmpts ( image <S2SV_ModStart> ( image ) <= 3 ) ; for ( i = 0 ; i < 3 ; ++ i ) { data [ i ] = 0 ; } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { if ( ! ( <S2SV_ModEnd> data [ i <S2SV_ModStart> image ) ) ) ) { goto error ; } <S2SV_ModEnd> } pad = <S2SV_ModStart> EOF ) { goto error ; } z = ( z << 8 ) | c ; nz += 8 ; } v = ( z >> ( nz - hdr -> depth ) ) & RAS_ONES ( hdr -> depth ) ; z &= RAS_ONES ( nz - hdr -> depth ) ; nz -= hdr -> depth ; if ( jas_image_numcmpts ( image ) == 3 ) { jas_matrix_setv ( data [ 0 ] , x , ( RAS_GETRED ( v ) ) ) ; jas_matrix_setv ( data [ 1 ] , x , ( RAS_GETGREEN ( v ) ) ) ; jas_matrix_setv ( data [ 2 ] , x , ( RAS_GETBLUE ( v ) ) ) ; } else { jas_matrix_setv ( data [ 0 ] , x , ( v ) ) ; } } if ( pad ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) { goto error ; } } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { if ( jas_image_writecmpt ( image , i , 0 , y , hdr -> width , 1 , data [ i ] ) ) { goto error ; } } } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { jas_matrix_destroy ( data [ i ] ) ; data [ i ] = 0 ; } return 0 ; error : for ( i = 0 ; i < 3 ; ++ i ) { if ( data [ i ] ) { jas_matrix_destroy ( data [ i ] ) ; } } <S2SV_ModStart> 1 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6561\n\n```\nCWE-476 smb_sdrc_t smb2_flush ( smb_request_t * sr ) { <S2SV_StartBug> smb_ofile_t * of = NULL ; <S2SV_EndBug> uint16_t StructSize ; uint16_t reserved1 ; uint32_t reserved2 ; smb2fid_t smb2fid ; uint32_t status ; int rc = 0 ; rc = smb_mbc_decodef ( & sr -> smb_data , \"wwlqq\" , & StructSize , & reserved1 , & reserved2 , & smb2fid . persistent , & smb2fid . temporal ) ; if ( rc ) return ( SDRC_ERROR ) ; if ( StructSize != 24 ) return ( SDRC_ERROR ) ; status = smb2sr_lookup_fid ( sr , & smb2fid ) ; if ( status ) { smb2sr_put_error ( sr , status ) ; return ( SDRC_SUCCESS ) ; } <S2SV_StartBug> of = sr -> fid_ofile ; <S2SV_EndBug> if ( ( of -> f_node -> flags & NODE_FLAGS_WRITE_THROUGH ) == 0 ) ( void ) smb_fsop_commit ( sr , of -> f_cr , of -> f_node ) ; ( void ) smb_mbc_encodef ( & sr -> reply , \"wwl\" , 4 , 0 ) ; return ( SDRC_SUCCESS ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sr ) { <S2SV_ModEnd> uint16_t StructSize ; <S2SV_ModStart> ) ; } smb_ofile_flush ( sr , <S2SV_ModEnd> sr -> fid_ofile <S2SV_ModStart> sr -> fid_ofile <S2SV_ModEnd> ) ; (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9940\n\n```\nCWE-416 static void regulator_ena_gpio_free ( struct regulator_dev * rdev ) { struct regulator_enable_gpio * pin , * n ; if ( ! rdev -> ena_pin ) return ; list_for_each_entry_safe ( pin , n , & regulator_ena_gpio_list , list ) { if ( pin -> gpiod == rdev -> ena_pin -> gpiod ) { if ( pin -> request_count <= 1 ) { pin -> request_count = 0 ; gpiod_put ( pin -> gpiod ) ; list_del ( & pin -> list ) ; kfree ( pin ) ; <S2SV_StartBug> } else { <S2SV_EndBug> pin -> request_count -- ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pin ) ; rdev -> ena_pin = NULL ; return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> int ntlm_read_message_fields_buffer ( wStream * s , NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( fields -> Len > 0 ) { <S2SV_StartBug> if ( ( fields -> BufferOffset + fields -> Len ) > Stream_Length ( s ) ) <S2SV_EndBug> return - 1 ; fields -> Buffer = ( PBYTE ) malloc ( fields -> Len ) ; if ( ! fields -> Buffer ) return - 1 ; Stream_SetPosition ( s , fields -> BufferOffset ) ; Stream_Read ( s , fields -> Buffer , fields -> Len ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> 0 ) { const UINT64 offset = ( UINT64 ) <S2SV_ModEnd> fields -> BufferOffset <S2SV_ModStart> -> BufferOffset + ( UINT64 ) <S2SV_ModStart> fields -> Len ; if ( offset <S2SV_ModEnd> > Stream_Length (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9763\n\n```\nCWE-119 static grub_err_t find_file ( const char * currpath , grub_fshelp_node_t currroot , grub_fshelp_node_t * currfound , struct grub_fshelp_find_file_closure * c ) { <S2SV_StartBug> # ifndef _MSC_VER <S2SV_EndBug> <S2SV_StartBug> char fpath [ grub_strlen ( currpath ) + 1 ] ; <S2SV_EndBug> # else char * fpath = grub_malloc ( grub_strlen ( currpath ) + 1 ) ; <S2SV_StartBug> # endif <S2SV_EndBug> char * name = fpath ; char * next ; enum grub_fshelp_filetype type = GRUB_FSHELP_DIR ; grub_fshelp_node_t currnode = currroot ; grub_fshelp_node_t oldnode = currroot ; c -> currroot = currroot ; grub_strncpy ( fpath , currpath , grub_strlen ( currpath ) + 1 ) ; while ( * name == '/' ) name ++ ; if ( ! * name ) { <S2SV_StartBug> * currfound = currnode ; <S2SV_EndBug> return 0 ; } for ( ; ; ) { int found ; struct find_file_closure cc ; next = grub_strchr ( name , '/' ) ; if ( next ) { while ( * next == '/' ) * ( next ++ ) = '\\\\0' ; } if ( type != GRUB_FSHELP_DIR ) { free_node ( currnode , c ) ; <S2SV_StartBug> return grub_error ( GRUB_ERR_BAD_FILE_TYPE , \"not<S2SV_blank>a<S2SV_blank>directory\" ) ; <S2SV_EndBug> } cc . name = name ; cc . type = & type ; cc . oldnode = & oldnode ; cc . currnode = & currnode ; found = c -> iterate_dir ( currnode , iterate , & cc ) ; if ( ! found ) { <S2SV_StartBug> if ( grub_errno ) <S2SV_EndBug> <S2SV_StartBug> return grub_errno ; <S2SV_EndBug> break ; } if ( type == GRUB_FSHELP_SYMLINK ) { char * symlink ; if ( ++ ( c -> symlinknest ) == 8 ) { free_node ( currnode , c ) ; free_node ( oldnode , c ) ; <S2SV_StartBug> return grub_error ( GRUB_ERR_SYMLINK_LOOP , <S2SV_EndBug> \"too<S2SV_blank>deep<S2SV_blank>nesting<S2SV_blank>of<S2SV_blank>symlinks\" ) ; } symlink = c -> read_symlink ( currnode ) ; free_node ( currnode , c ) ; if ( ! symlink ) { <S2SV_StartBug> free_node ( oldnode , c ) ; <S2SV_EndBug> return grub_errno ; } if ( symlink [ 0 ] == '/' ) { free_node ( oldnode , c ) ; oldnode = c -> rootnode ; } find_file ( symlink , oldnode , & currnode , c ) ; type = c -> foundtype ; grub_free ( symlink ) ; if ( grub_errno ) { free_node ( oldnode , c ) ; <S2SV_StartBug> return grub_errno ; <S2SV_EndBug> } } free_node ( oldnode , c ) ; if ( ! next || * next == '\\\\0' ) { * currfound = currnode ; c -> foundtype = type ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } name = next ; } <S2SV_StartBug> return grub_error ( GRUB_ERR_FILE_NOT_FOUND , \"file<S2SV_blank>not<S2SV_blank>found\" ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c ) { char * fpath = grub_malloc ( <S2SV_ModEnd> grub_strlen ( currpath <S2SV_ModStart> ) + 1 ) ; char * name = fpath ; char * next ; enum grub_fshelp_filetype type = GRUB_FSHELP_DIR ; grub_fshelp_node_t currnode = currroot ; grub_fshelp_node_t oldnode = currroot ; c -> currroot = currroot ; grub_strncpy ( fpath , currpath , <S2SV_ModEnd> grub_strlen ( currpath <S2SV_ModStart> 1 ) ; <S2SV_ModEnd> while ( * <S2SV_ModStart> currfound = currnode ; free ( fpath ) <S2SV_ModStart> c ) ; free ( fpath ) ; <S2SV_ModStart> ( grub_errno ) { free ( fpath ) ; <S2SV_ModStart> return grub_errno ; } <S2SV_ModStart> c ) ; free ( fpath ) ; <S2SV_ModStart> oldnode , c ) ; free ( fpath <S2SV_ModStart> c ) ; free ( fpath ) ; <S2SV_ModStart> = type ; free ( fpath ) ; <S2SV_ModStart> next ; } free ( fpath ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19046\n\n```\nCWE-401 static int __ipmi_bmc_register ( struct ipmi_smi * intf , struct ipmi_device_id * id , bool guid_set , guid_t * guid , int intf_num ) { int rv ; struct bmc_device * bmc ; struct bmc_device * old_bmc ; intf -> in_bmc_register = true ; mutex_unlock ( & intf -> bmc_reg_mutex ) ; mutex_lock ( & ipmidriver_mutex ) ; if ( guid_set ) old_bmc = ipmi_find_bmc_guid ( & ipmidriver . driver , guid ) ; else old_bmc = ipmi_find_bmc_prod_dev_id ( & ipmidriver . driver , id -> product_id , id -> device_id ) ; if ( old_bmc ) { bmc = old_bmc ; intf -> bmc = old_bmc ; mutex_lock ( & bmc -> dyn_mutex ) ; list_add_tail ( & intf -> bmc_link , & bmc -> intfs ) ; mutex_unlock ( & bmc -> dyn_mutex ) ; dev_info ( intf -> si_dev , \"interfacing<S2SV_blank>existing<S2SV_blank>BMC<S2SV_blank>(man_id:<S2SV_blank>0x%6.6x,<S2SV_blank>prod_id:<S2SV_blank>0x%4.4x,<S2SV_blank>dev_id:<S2SV_blank>0x%2.2x)\\\\n\" , bmc -> id . manufacturer_id , bmc -> id . product_id , bmc -> id . device_id ) ; } else { bmc = kzalloc ( sizeof ( * bmc ) , GFP_KERNEL ) ; if ( ! bmc ) { rv = - ENOMEM ; goto out ; } INIT_LIST_HEAD ( & bmc -> intfs ) ; mutex_init ( & bmc -> dyn_mutex ) ; INIT_WORK ( & bmc -> remove_work , cleanup_bmc_work ) ; bmc -> id = * id ; bmc -> dyn_id_set = 1 ; bmc -> dyn_guid_set = guid_set ; bmc -> guid = * guid ; bmc -> dyn_id_expiry = jiffies + IPMI_DYN_DEV_ID_EXPIRY ; bmc -> pdev . name = \"ipmi_bmc\" ; rv = ida_simple_get ( & ipmi_bmc_ida , 0 , 0 , GFP_KERNEL ) ; <S2SV_StartBug> if ( rv < 0 ) <S2SV_EndBug> <S2SV_StartBug> goto out ; <S2SV_EndBug> bmc -> pdev . dev . driver = & ipmidriver . driver ; bmc -> pdev . id = rv ; bmc -> pdev . dev . release = release_bmc_device ; bmc -> pdev . dev . type = & bmc_device_type ; kref_init ( & bmc -> usecount ) ; intf -> bmc = bmc ; mutex_lock ( & bmc -> dyn_mutex ) ; list_add_tail ( & intf -> bmc_link , & bmc -> intfs ) ; mutex_unlock ( & bmc -> dyn_mutex ) ; rv = platform_device_register ( & bmc -> pdev ) ; if ( rv ) { dev_err ( intf -> si_dev , \"Unable<S2SV_blank>to<S2SV_blank>register<S2SV_blank>bmc<S2SV_blank>device:<S2SV_blank>%d\\\\n\" , rv ) ; goto out_list_del ; } dev_info ( intf -> si_dev , \"Found<S2SV_blank>new<S2SV_blank>BMC<S2SV_blank>(man_id:<S2SV_blank>0x%6.6x,<S2SV_blank>prod_id:<S2SV_blank>0x%4.4x,<S2SV_blank>dev_id:<S2SV_blank>0x%2.2x)\\\\n\" , bmc -> id . manufacturer_id , bmc -> id . product_id , bmc -> id . device_id ) ; } rv = sysfs_create_link ( & intf -> si_dev -> kobj , & bmc -> pdev . dev . kobj , \"bmc\" ) ; if ( rv ) { dev_err ( intf -> si_dev , \"Unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>bmc<S2SV_blank>symlink:<S2SV_blank>%d\\\\n\" , rv ) ; goto out_put_bmc ; } if ( intf_num == - 1 ) intf_num = intf -> intf_num ; intf -> my_dev_name = kasprintf ( GFP_KERNEL , \"ipmi%d\" , intf_num ) ; if ( ! intf -> my_dev_name ) { rv = - ENOMEM ; dev_err ( intf -> si_dev , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>link<S2SV_blank>from<S2SV_blank>BMC:<S2SV_blank>%d\\\\n\" , rv ) ; goto out_unlink1 ; } rv = sysfs_create_link ( & bmc -> pdev . dev . kobj , & intf -> si_dev -> kobj , intf -> my_dev_name ) ; if ( rv ) { kfree ( intf -> my_dev_name ) ; intf -> my_dev_name = NULL ; dev_err ( intf -> si_dev , \"Unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>symlink<S2SV_blank>to<S2SV_blank>bmc:<S2SV_blank>%d\\\\n\" , rv ) ; goto out_free_my_dev_name ; } intf -> bmc_registered = true ; out : mutex_unlock ( & ipmidriver_mutex ) ; mutex_lock ( & intf -> bmc_reg_mutex ) ; intf -> in_bmc_register = false ; return rv ; out_free_my_dev_name : kfree ( intf -> my_dev_name ) ; intf -> my_dev_name = NULL ; out_unlink1 : sysfs_remove_link ( & intf -> si_dev -> kobj , \"bmc\" ) ; out_put_bmc : mutex_lock ( & bmc -> dyn_mutex ) ; list_del ( & intf -> bmc_link ) ; mutex_unlock ( & bmc -> dyn_mutex ) ; intf -> bmc = & intf -> tmp_bmc ; kref_put ( & bmc -> usecount , cleanup_bmc_device ) ; goto out ; out_list_del : mutex_lock ( & bmc -> dyn_mutex ) ; list_del ( & intf -> bmc_link ) ; mutex_unlock ( & bmc -> dyn_mutex ) ; intf -> bmc = & intf -> tmp_bmc ; put_device ( & bmc -> pdev . dev ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) { kfree ( bmc ) ; <S2SV_ModStart> goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-119 void test_base64_lengths ( void ) { const char * in = \"FuseMuse\" ; char out1 [ 32 ] ; char out2 [ 32 ] ; size_t enclen ; int declen ; enclen = mutt_b64_encode ( out1 , in , 0 , 32 ) ; if ( ! TEST_CHECK ( enclen == 0 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , 0 ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , enclen ) ; } out1 [ 0 ] = '\\\\0' ; <S2SV_StartBug> declen = mutt_b64_decode ( out2 , out1 ) ; <S2SV_EndBug> if ( ! TEST_CHECK ( declen == - 1 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , - 1 ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , declen ) ; } for ( size_t i = 1 ; i <= 8 ; ++ i ) { enclen = mutt_b64_encode ( out1 , in , i , 32 ) ; size_t exp = ( ( i + 2 ) / 3 ) << 2 ; if ( ! TEST_CHECK ( enclen == exp ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , exp ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , enclen ) ; } <S2SV_StartBug> declen = mutt_b64_decode ( out2 , out1 ) ; <S2SV_EndBug> if ( ! TEST_CHECK ( declen == i ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , i ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , declen ) ; } out2 [ declen ] = '\\\\0' ; if ( ! TEST_CHECK ( strncmp ( out2 , in , i ) == 0 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%s\" , in ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%s\" , out2 ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out2 , out1 , sizeof ( out2 ) <S2SV_ModStart> out2 , out1 , sizeof ( out2 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 UINT32 UIPC_Read ( tUIPC_CH_ID ch_id , UINT16 * p_msg_evt , UINT8 * p_buf , UINT32 len ) { int n ; int n_read = 0 ; int fd = uipc_main . ch [ ch_id ] . fd ; struct pollfd pfd ; UNUSED ( p_msg_evt ) ; if ( ch_id >= UIPC_CH_NUM ) { BTIF_TRACE_ERROR ( \"UIPC_Read<S2SV_blank>:<S2SV_blank>invalid<S2SV_blank>ch<S2SV_blank>id<S2SV_blank>%d\" , ch_id ) ; return 0 ; } if ( fd == UIPC_DISCONNECTED ) { BTIF_TRACE_ERROR ( \"UIPC_Read<S2SV_blank>:<S2SV_blank>channel<S2SV_blank>%d<S2SV_blank>closed\" , ch_id ) ; return 0 ; } while ( n_read < ( int ) len ) { pfd . fd = fd ; pfd . events = POLLIN | POLLHUP ; <S2SV_StartBug> if ( poll ( & pfd , 1 , uipc_main . ch [ ch_id ] . read_poll_tmo_ms ) == 0 ) <S2SV_EndBug> { BTIF_TRACE_EVENT ( \"poll<S2SV_blank>timeout<S2SV_blank>(%d<S2SV_blank>ms)\" , uipc_main . ch [ ch_id ] . read_poll_tmo_ms ) ; break ; } if ( pfd . revents & ( POLLHUP | POLLNVAL ) ) { BTIF_TRACE_EVENT ( \"poll<S2SV_blank>:<S2SV_blank>channel<S2SV_blank>detached<S2SV_blank>remotely\" ) ; UIPC_LOCK ( ) ; uipc_close_locked ( ch_id ) ; UIPC_UNLOCK ( ) ; return 0 ; } <S2SV_StartBug> n = recv ( fd , p_buf + n_read , len - n_read , 0 ) ; <S2SV_EndBug> if ( n == 0 ) { BTIF_TRACE_EVENT ( \"UIPC_Read<S2SV_blank>:<S2SV_blank>channel<S2SV_blank>detached<S2SV_blank>remotely\" ) ; UIPC_LOCK ( ) ; uipc_close_locked ( ch_id ) ; UIPC_UNLOCK ( ) ; return 0 ; } if ( n < 0 ) { BTIF_TRACE_EVENT ( \"UIPC_Read<S2SV_blank>:<S2SV_blank>read<S2SV_blank>failed<S2SV_blank>(%s)\" , strerror ( errno ) ) ; return 0 ; } n_read += n ; } return n_read ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> ] . read_poll_tmo_ms ) <S2SV_ModStart> } n = TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7125\n\n```\nCWE-74 PS_SERIALIZER_DECODE_FUNC ( php ) { const char * p , * q ; char * name ; const char * endptr = val + vallen ; zval * current ; int namelen ; int has_value ; php_unserialize_data_t var_hash ; <S2SV_StartBug> PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; <S2SV_EndBug> p = val ; while ( p < endptr ) { zval * * tmp ; <S2SV_StartBug> q = p ; <S2SV_EndBug> while ( * q != PS_DELIMITER ) { if ( ++ q >= endptr ) goto break_outer_loop ; } if ( p [ 0 ] == PS_UNDEF_MARKER ) { p ++ ; has_value = 0 ; } else { has_value = 1 ; } namelen = q - p ; name = estrndup ( p , namelen ) ; q ++ ; if ( zend_hash_find ( & EG ( symbol_table ) , name , namelen + 1 , ( void * * ) & tmp ) == SUCCESS ) { if ( ( Z_TYPE_PP ( tmp ) == IS_ARRAY && Z_ARRVAL_PP ( tmp ) == & EG ( symbol_table ) ) || * tmp == PS ( http_session_vars ) ) { <S2SV_StartBug> goto skip ; <S2SV_EndBug> } } if ( has_value ) { ALLOC_INIT_ZVAL ( current ) ; if ( php_var_unserialize ( & current , ( const unsigned char * * ) & q , ( const unsigned char * ) endptr , & var_hash TSRMLS_CC ) ) { <S2SV_StartBug> php_set_session_var ( name , namelen , current , & var_hash TSRMLS_CC ) ; <S2SV_EndBug> } else { var_push_dtor_no_addref ( & var_hash , & current ) ; efree ( name ) ; PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return FAILURE ; } var_push_dtor_no_addref ( & var_hash , & current ) ; } <S2SV_StartBug> PS_ADD_VARL ( name , namelen ) ; <S2SV_EndBug> skip : efree ( name ) ; p = q ; } break_outer_loop : PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> php_unserialize_data_t var_hash ; int skip = 0 ; <S2SV_ModStart> q = p ; skip = 0 <S2SV_ModStart> ) ) { skip = 1 <S2SV_ModEnd> ; } } <S2SV_ModStart> ) ) { if ( ! skip ) { <S2SV_ModStart> TSRMLS_CC ) ; } <S2SV_ModStart> ) ; } if ( ! skip ) { <S2SV_ModStart> namelen ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void enc28j60EventHandler ( NetInterface * interface ) { error_t error ; uint16_t status ; uint16_t value ; <S2SV_StartBug> status = enc28j60ReadReg ( interface , ENC28J60_REG_EIR ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( status & EIR_LINKIF ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc28j60ReadPhyReg ( interface , ENC28J60_PHY_REG_PHIR ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_EIR , EIR_LINKIF ) ; <S2SV_EndBug> <S2SV_StartBug> value = enc28j60ReadPhyReg ( interface , ENC28J60_PHY_REG_PHSTAT2 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( value & PHSTAT2_LSTAT ) != 0 ) <S2SV_EndBug> { interface -> linkSpeed = NIC_LINK_SPEED_10MBPS ; # if ( ENC28J60_FULL_DUPLEX_SUPPORT == ENABLED ) interface -> duplexMode = NIC_FULL_DUPLEX_MODE ; # else interface -> duplexMode = NIC_HALF_DUPLEX_MODE ; # endif interface -> linkState = TRUE ; } else { interface -> linkState = FALSE ; } nicNotifyLinkChange ( interface ) ; } <S2SV_StartBug> if ( ( status & EIR_PKTIF ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_EIR , EIR_PKTIF ) ; <S2SV_EndBug> do { error = enc28j60ReceivePacket ( interface ) ; } while ( error != ERROR_BUFFER_EMPTY ) ; } <S2SV_StartBug> enc28j60SetBit ( interface , ENC28J60_REG_EIE , EIE_LINKIE | EIE_PKTIE ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC28J60_EIR <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( status & ENC28J60_EIR_LINKIF <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC28J60_PHIR <S2SV_ModEnd> ) ; enc28j60ClearBit <S2SV_ModStart> ( interface , ENC28J60_EIR , ENC28J60_EIR_LINKIF <S2SV_ModEnd> ) ; value <S2SV_ModStart> ( interface , ENC28J60_PHSTAT2 <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( value & ENC28J60_PHSTAT2_LSTAT <S2SV_ModEnd> ) != 0 <S2SV_ModStart> } if ( enc28j60ReadReg ( interface , ENC28J60_EPKTCNT <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC28J60_EIR , ENC28J60_EIR_PKTIF <S2SV_ModEnd> ) ; do <S2SV_ModStart> ( interface , ENC28J60_EIE , ENC28J60_EIE_LINKIE | ENC28J60_EIE_PKTIE <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5418\n\n```\nCWE-20 static int create_filesystem_object ( struct archive_write_disk * a ) { const char * linkname ; mode_t final_mode , mode ; int r ; <S2SV_StartBug> linkname = archive_entry_hardlink ( a -> entry ) ; <S2SV_EndBug> if ( linkname != NULL ) { # if ! HAVE_LINK return ( EPERM ) ; <S2SV_StartBug> # else <S2SV_EndBug> r = link ( linkname , a -> name ) ? errno : 0 ; if ( r == 0 && a -> filesize <= 0 ) { a -> todo = 0 ; a -> deferred = 0 ; } else if ( r == 0 && a -> filesize > 0 ) { a -> fd = open ( a -> name , O_WRONLY | O_TRUNC | O_BINARY | O_CLOEXEC ) ; __archive_ensure_cloexec_flag ( a -> fd ) ; if ( a -> fd < 0 ) r = errno ; } return ( r ) ; # endif } linkname = archive_entry_symlink ( a -> entry ) ; if ( linkname != NULL ) { # if HAVE_SYMLINK return symlink ( linkname , a -> name ) ? errno : 0 ; # else return ( EPERM ) ; # endif } final_mode = a -> mode & 07777 ; mode = final_mode & 0777 & ~ a -> user_umask ; switch ( a -> mode & AE_IFMT ) { default : case AE_IFREG : a -> fd = open ( a -> name , O_WRONLY | O_CREAT | O_EXCL | O_BINARY | O_CLOEXEC , mode ) ; __archive_ensure_cloexec_flag ( a -> fd ) ; r = ( a -> fd < 0 ) ; break ; case AE_IFCHR : # ifdef HAVE_MKNOD r = mknod ( a -> name , mode | S_IFCHR , archive_entry_rdev ( a -> entry ) ) ; break ; # else return ( EINVAL ) ; # endif case AE_IFBLK : # ifdef HAVE_MKNOD r = mknod ( a -> name , mode | S_IFBLK , archive_entry_rdev ( a -> entry ) ) ; break ; # else return ( EINVAL ) ; # endif case AE_IFDIR : mode = ( mode | MINIMUM_DIR_MODE ) & MAXIMUM_DIR_MODE ; r = mkdir ( a -> name , mode ) ; if ( r == 0 ) { a -> deferred |= ( a -> todo & TODO_TIMES ) ; a -> todo &= ~ TODO_TIMES ; if ( ( mode != final_mode ) || ( a -> flags & ARCHIVE_EXTRACT_PERM ) ) a -> deferred |= ( a -> todo & TODO_MODE ) ; a -> todo &= ~ TODO_MODE ; } break ; case AE_IFIFO : # ifdef HAVE_MKFIFO r = mkfifo ( a -> name , mode ) ; break ; # else return ( EINVAL ) ; # endif } if ( r ) return ( errno ) ; if ( mode == final_mode ) a -> todo &= ~ TODO_MODE ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int r ; char * linkname_copy ; struct archive_string error_string ; int error_number ; <S2SV_ModStart> ; # else archive_string_init ( & error_string ) ; linkname_copy = strdup ( linkname ) ; if ( linkname_copy == NULL ) { return ( EPERM ) ; } r = cleanup_pathname_fsobj ( linkname_copy , & error_number , & error_string , a -> flags ) ; if ( r != ARCHIVE_OK ) { archive_set_error ( & a -> archive , error_number , \"%s\" , error_string . s ) ; free ( linkname_copy ) ; return ( EPERM ) ; } r = check_symlinks_fsobj ( linkname_copy , & error_number , & error_string , a -> flags ) ; if ( r != ARCHIVE_OK ) { archive_set_error ( & a -> archive , error_number , \"%s\" , error_string . s ) ; free ( linkname_copy ) ; return ( EPERM ) ; } free ( linkname_copy ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2548\n\n```\nCWE-310 static int crypto_report_cipher ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_cipher rcipher ; <S2SV_StartBug> snprintf ( rcipher . type , CRYPTO_MAX_ALG_NAME , \"%s\" , \"cipher\" ) ; <S2SV_EndBug> rcipher . blocksize = alg -> cra_blocksize ; rcipher . min_keysize = alg -> cra_cipher . cia_min_keysize ; rcipher . max_keysize = alg -> cra_cipher . cia_max_keysize ; if ( nla_put ( skb , CRYPTOCFGA_REPORT_CIPHER , sizeof ( struct crypto_report_cipher ) , & rcipher ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_cipher rcipher ; strncpy <S2SV_ModEnd> ( rcipher . <S2SV_ModStart> . type , \"cipher\" , sizeof ( rcipher . type ) <S2SV_ModEnd> ) ; rcipher\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4530\n\n```\nCWE-200 void free_bprm ( struct linux_binprm * bprm ) { free_arg_pages ( bprm ) ; if ( bprm -> cred ) { mutex_unlock ( & current -> signal -> cred_guard_mutex ) ; abort_creds ( bprm -> cred ) ; } <S2SV_StartBug> kfree ( bprm ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( bprm -> interp != bprm -> filename ) kfree ( bprm -> interp ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_iwht4x4_add ( const int16_t * input , uint8_t * dest , int stride , int eob ) { <S2SV_EndBug> if ( eob > 1 ) <S2SV_StartBug> vp9_iwht4x4_16_add ( input , dest , stride ) ; <S2SV_EndBug> else <S2SV_StartBug> vp9_iwht4x4_1_add ( input , dest , stride ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_iwht4x4_add ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> > 1 ) vpx_iwht4x4_16_add <S2SV_ModEnd> ( input , <S2SV_ModStart> ) ; else vpx_iwht4x4_1_add <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9226\n\n```\nCWE-787 static int next_state_val ( CClassNode * cc , OnigCodePoint * vs , OnigCodePoint v , int * vs_israw , int v_israw , enum CCVALTYPE intype , enum CCVALTYPE * type , enum CCSTATE * state , ScanEnv * env ) { int r ; switch ( * state ) { case CCS_VALUE : if ( * type == CCV_SB ) { <S2SV_StartBug> BITSET_SET_BIT ( cc -> bs , ( int ) ( * vs ) ) ; <S2SV_EndBug> } else if ( * type == CCV_CODE_POINT ) { r = add_code_range ( & ( cc -> mbuf ) , env , * vs , * vs ) ; if ( r < 0 ) return r ; } break ; case CCS_RANGE : if ( intype == * type ) { if ( intype == CCV_SB ) { if ( * vs > 0xff || v > 0xff ) return ONIGERR_INVALID_CODE_POINT_VALUE ; if ( * vs > v ) { if ( IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC ) ) goto ccs_range_end ; else return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS ; } bitset_set_range ( cc -> bs , ( int ) * vs , ( int ) v ) ; } else { r = add_code_range ( & ( cc -> mbuf ) , env , * vs , v ) ; if ( r < 0 ) return r ; } } else { # if 0 if ( intype == CCV_CODE_POINT && * type == CCV_SB ) { # endif if ( * vs > v ) { if ( IS_SYNTAX_BV ( env -> syntax , ONIG_SYN_ALLOW_EMPTY_RANGE_IN_CC ) ) goto ccs_range_end ; else return ONIGERR_EMPTY_RANGE_IN_CHAR_CLASS ; } bitset_set_range ( cc -> bs , ( int ) * vs , ( int ) ( v < 0xff ? v : 0xff ) ) ; r = add_code_range ( & ( cc -> mbuf ) , env , ( OnigCodePoint ) * vs , v ) ; if ( r < 0 ) return r ; # if 0 } else return ONIGERR_MISMATCH_CODE_LENGTH_IN_CLASS_RANGE ; # endif } ccs_range_end : * state = CCS_COMPLETE ; break ; case CCS_COMPLETE : case CCS_START : * state = CCS_VALUE ; break ; default : break ; } * vs_israw = v_israw ; * vs = v ; * type = intype ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CCV_SB ) { if ( * vs > 0xff ) return ONIGERR_INVALID_CODE_POINT_VALUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static void suffix_object ( cJSON * prev , cJSON * item ) { prev -> next = item ; item -> prev = prev ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int ip_queue_xmit ( struct sk_buff * skb ) { struct sock * sk = skb -> sk ; struct inet_sock * inet = inet_sk ( sk ) ; <S2SV_StartBug> struct ip_options * opt = inet -> opt ; <S2SV_EndBug> struct rtable * rt ; struct iphdr * iph ; int res ; rcu_read_lock ( ) ; <S2SV_StartBug> rt = skb_rtable ( skb ) ; <S2SV_EndBug> if ( rt != NULL ) goto packet_routed ; rt = ( struct rtable * ) __sk_dst_check ( sk , 0 ) ; if ( rt == NULL ) { __be32 daddr ; daddr = inet -> inet_daddr ; <S2SV_StartBug> if ( opt && opt -> srr ) <S2SV_EndBug> <S2SV_StartBug> daddr = opt -> faddr ; <S2SV_EndBug> rt = ip_route_output_ports ( sock_net ( sk ) , sk , daddr , inet -> inet_saddr , inet -> inet_dport , inet -> inet_sport , sk -> sk_protocol , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if ) ; if ( IS_ERR ( rt ) ) goto no_route ; sk_setup_caps ( sk , & rt -> dst ) ; } skb_dst_set_noref ( skb , & rt -> dst ) ; packet_routed : <S2SV_StartBug> if ( opt && opt -> is_strictroute && rt -> rt_dst != rt -> rt_gateway ) <S2SV_EndBug> goto no_route ; <S2SV_StartBug> skb_push ( skb , sizeof ( struct iphdr ) + ( opt ? opt -> optlen : 0 ) ) ; <S2SV_EndBug> skb_reset_network_header ( skb ) ; iph = ip_hdr ( skb ) ; * ( ( __be16 * ) iph ) = htons ( ( 4 << 12 ) | ( 5 << 8 ) | ( inet -> tos & 0xff ) ) ; if ( ip_dont_fragment ( sk , & rt -> dst ) && ! skb -> local_df ) iph -> frag_off = htons ( IP_DF ) ; else iph -> frag_off = 0 ; iph -> ttl = ip_select_ttl ( inet , & rt -> dst ) ; iph -> protocol = sk -> sk_protocol ; iph -> saddr = rt -> rt_src ; iph -> daddr = rt -> rt_dst ; <S2SV_StartBug> if ( opt && opt -> optlen ) { <S2SV_EndBug> <S2SV_StartBug> iph -> ihl += opt -> optlen >> 2 ; <S2SV_EndBug> <S2SV_StartBug> ip_options_build ( skb , opt , inet -> inet_daddr , rt , 0 ) ; <S2SV_EndBug> } ip_select_ident_more ( iph , & rt -> dst , sk , ( skb_shinfo ( skb ) -> gso_segs ? : 1 ) - 1 ) ; skb -> priority = sk -> sk_priority ; skb -> mark = sk -> sk_mark ; res = ip_local_out ( skb ) ; rcu_read_unlock ( ) ; return res ; no_route : rcu_read_unlock ( ) ; IP_INC_STATS ( sock_net ( sk ) , IPSTATS_MIB_OUTNOROUTES ) ; kfree_skb ( skb ) ; return - EHOSTUNREACH ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct ip_options_rcu * inet_opt <S2SV_ModEnd> ; struct rtable <S2SV_ModStart> ( ) ; inet_opt = rcu_dereference ( inet -> inet_opt ) ; <S2SV_ModStart> ; if ( inet_opt && inet_opt -> opt . <S2SV_ModEnd> srr ) daddr <S2SV_ModStart> ) daddr = inet_opt -> opt . <S2SV_ModEnd> faddr ; rt <S2SV_ModStart> : if ( inet_opt && inet_opt -> opt . <S2SV_ModEnd> is_strictroute && rt <S2SV_ModStart> ) + ( inet_opt ? inet_opt -> opt . <S2SV_ModEnd> optlen : 0 <S2SV_ModStart> ; if ( inet_opt && inet_opt -> opt . <S2SV_ModEnd> optlen ) { <S2SV_ModStart> -> ihl += inet_opt -> opt . <S2SV_ModEnd> optlen >> 2 <S2SV_ModStart> ( skb , & inet_opt ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 void posixtimer_rearm ( struct siginfo * info ) { struct k_itimer * timr ; unsigned long flags ; timr = lock_timer ( info -> si_tid , & flags ) ; if ( ! timr ) return ; if ( timr -> it_requeue_pending == info -> si_sys_private ) { timr -> kclock -> timer_rearm ( timr ) ; timr -> it_active = 1 ; timr -> it_overrun_last = timr -> it_overrun ; <S2SV_StartBug> timr -> it_overrun = - 1 ; <S2SV_EndBug> ++ timr -> it_requeue_pending ; <S2SV_StartBug> info -> si_overrun += timr -> it_overrun_last ; <S2SV_EndBug> } unlock_timer ( timr , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> it_overrun = - 1LL <S2SV_ModEnd> ; ++ timr <S2SV_ModStart> info -> si_overrun = timer_overrun_to_int ( timr , info -> si_overrun ) <S2SV_ModEnd> ; } unlock_timer\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20406\n\n```\nCWE-190 static PyObject * _pickle_PicklerMemoProxy_copy_impl ( PicklerMemoProxyObject * self ) { <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> PyMemoTable * memo ; PyObject * new_memo = PyDict_New ( ) ; if ( new_memo == NULL ) return NULL ; memo = self -> pickler -> memo ; <S2SV_StartBug> for ( i = 0 ; i < memo -> mt_allocated ; ++ i ) { <S2SV_EndBug> PyMemoEntry entry = memo -> mt_table [ i ] ; if ( entry . me_key != NULL ) { int status ; PyObject * key , * value ; key = PyLong_FromVoidPtr ( entry . me_key ) ; value = Py_BuildValue ( \"nO\" , entry . me_value , entry . me_key ) ; if ( key == NULL || value == NULL ) { Py_XDECREF ( key ) ; Py_XDECREF ( value ) ; goto error ; } status = PyDict_SetItem ( new_memo , key , value ) ; Py_DECREF ( key ) ; Py_DECREF ( value ) ; if ( status < 0 ) goto error ; } } return new_memo ; error : Py_XDECREF ( new_memo ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> self ) { <S2SV_ModEnd> PyMemoTable * memo <S2SV_ModStart> ; for ( size_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6657\n\n```\nCWE-264 int sock_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; int val ; int valbool ; struct linger ling ; int ret = 0 ; if ( optname == SO_BINDTODEVICE ) return sock_bindtodevice ( sk , optval , optlen ) ; if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; valbool = val ? 1 : 0 ; lock_sock ( sk ) ; switch ( optname ) { case SO_DEBUG : if ( val && ! capable ( CAP_NET_ADMIN ) ) ret = - EACCES ; else sock_valbool_flag ( sk , SOCK_DBG , valbool ) ; break ; case SO_REUSEADDR : sk -> sk_reuse = ( valbool ? SK_CAN_REUSE : SK_NO_REUSE ) ; break ; case SO_TYPE : case SO_PROTOCOL : case SO_DOMAIN : case SO_ERROR : ret = - ENOPROTOOPT ; break ; case SO_DONTROUTE : sock_valbool_flag ( sk , SOCK_LOCALROUTE , valbool ) ; break ; case SO_BROADCAST : sock_valbool_flag ( sk , SOCK_BROADCAST , valbool ) ; break ; case SO_SNDBUF : val = min_t ( u32 , val , sysctl_wmem_max ) ; set_sndbuf : sk -> sk_userlocks |= SOCK_SNDBUF_LOCK ; sk -> sk_sndbuf = max_t ( u32 , val * 2 , SOCK_MIN_SNDBUF ) ; sk -> sk_write_space ( sk ) ; break ; case SO_SNDBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_sndbuf ; case SO_RCVBUF : val = min_t ( u32 , val , sysctl_rmem_max ) ; set_rcvbuf : sk -> sk_userlocks |= SOCK_RCVBUF_LOCK ; sk -> sk_rcvbuf = max_t ( u32 , val * 2 , SOCK_MIN_RCVBUF ) ; break ; case SO_RCVBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_rcvbuf ; case SO_KEEPALIVE : # ifdef CONFIG_INET <S2SV_StartBug> if ( sk -> sk_protocol == IPPROTO_TCP ) <S2SV_EndBug> tcp_set_keepalive ( sk , valbool ) ; # endif sock_valbool_flag ( sk , SOCK_KEEPOPEN , valbool ) ; break ; case SO_OOBINLINE : sock_valbool_flag ( sk , SOCK_URGINLINE , valbool ) ; break ; case SO_NO_CHECK : sk -> sk_no_check = valbool ; break ; case SO_PRIORITY : if ( ( val >= 0 && val <= 6 ) || capable ( CAP_NET_ADMIN ) ) sk -> sk_priority = val ; else ret = - EPERM ; break ; case SO_LINGER : if ( optlen < sizeof ( ling ) ) { ret = - EINVAL ; break ; } if ( copy_from_user ( & ling , optval , sizeof ( ling ) ) ) { ret = - EFAULT ; break ; } if ( ! ling . l_onoff ) sock_reset_flag ( sk , SOCK_LINGER ) ; else { # if ( BITS_PER_LONG == 32 ) if ( ( unsigned int ) ling . l_linger >= MAX_SCHEDULE_TIMEOUT / HZ ) sk -> sk_lingertime = MAX_SCHEDULE_TIMEOUT ; else # endif sk -> sk_lingertime = ( unsigned int ) ling . l_linger * HZ ; sock_set_flag ( sk , SOCK_LINGER ) ; } break ; case SO_BSDCOMPAT : sock_warn_obsolete_bsdism ( \"setsockopt\" ) ; break ; case SO_PASSCRED : if ( valbool ) set_bit ( SOCK_PASSCRED , & sock -> flags ) ; else clear_bit ( SOCK_PASSCRED , & sock -> flags ) ; break ; case SO_TIMESTAMP : case SO_TIMESTAMPNS : if ( valbool ) { if ( optname == SO_TIMESTAMP ) sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; else sock_set_flag ( sk , SOCK_RCVTSTAMPNS ) ; sock_set_flag ( sk , SOCK_RCVTSTAMP ) ; sock_enable_timestamp ( sk , SOCK_TIMESTAMP ) ; } else { sock_reset_flag ( sk , SOCK_RCVTSTAMP ) ; sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; } break ; case SO_TIMESTAMPING : if ( val & ~ SOF_TIMESTAMPING_MASK ) { ret = - EINVAL ; break ; } sock_valbool_flag ( sk , SOCK_TIMESTAMPING_TX_HARDWARE , val & SOF_TIMESTAMPING_TX_HARDWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_TX_SOFTWARE , val & SOF_TIMESTAMPING_TX_SOFTWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_RX_HARDWARE , val & SOF_TIMESTAMPING_RX_HARDWARE ) ; if ( val & SOF_TIMESTAMPING_RX_SOFTWARE ) sock_enable_timestamp ( sk , SOCK_TIMESTAMPING_RX_SOFTWARE ) ; else sock_disable_timestamp ( sk , ( 1UL << SOCK_TIMESTAMPING_RX_SOFTWARE ) ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_SOFTWARE , val & SOF_TIMESTAMPING_SOFTWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_SYS_HARDWARE , val & SOF_TIMESTAMPING_SYS_HARDWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_RAW_HARDWARE , val & SOF_TIMESTAMPING_RAW_HARDWARE ) ; break ; case SO_RCVLOWAT : if ( val < 0 ) val = INT_MAX ; sk -> sk_rcvlowat = val ? : 1 ; break ; case SO_RCVTIMEO : ret = sock_set_timeout ( & sk -> sk_rcvtimeo , optval , optlen ) ; break ; case SO_SNDTIMEO : ret = sock_set_timeout ( & sk -> sk_sndtimeo , optval , optlen ) ; break ; case SO_ATTACH_FILTER : ret = - EINVAL ; if ( optlen == sizeof ( struct sock_fprog ) ) { struct sock_fprog fprog ; ret = - EFAULT ; if ( copy_from_user ( & fprog , optval , sizeof ( fprog ) ) ) break ; ret = sk_attach_filter ( & fprog , sk ) ; } break ; case SO_DETACH_FILTER : ret = sk_detach_filter ( sk ) ; break ; case SO_PASSSEC : if ( valbool ) set_bit ( SOCK_PASSSEC , & sock -> flags ) ; else clear_bit ( SOCK_PASSSEC , & sock -> flags ) ; break ; case SO_MARK : if ( ! capable ( CAP_NET_ADMIN ) ) ret = - EPERM ; else sk -> sk_mark = val ; break ; case SO_RXQ_OVFL : sock_valbool_flag ( sk , SOCK_RXQ_OVFL , valbool ) ; break ; case SO_WIFI_STATUS : sock_valbool_flag ( sk , SOCK_WIFI_STATUS , valbool ) ; break ; case SO_PEEK_OFF : if ( sock -> ops -> set_peek_off ) sock -> ops -> set_peek_off ( sk , val ) ; else ret = - EOPNOTSUPP ; break ; case SO_NOFCS : sock_valbool_flag ( sk , SOCK_NOFCS , valbool ) ; break ; default : ret = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk_protocol == IPPROTO_TCP && sk -> sk_type == SOCK_STREAM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 static int __btrfs_set_acl ( struct btrfs_trans_handle * trans , struct inode * inode , struct posix_acl * acl , int type ) { int ret , size = 0 ; const char * name ; char * value = NULL ; switch ( type ) { case ACL_TYPE_ACCESS : name = XATTR_NAME_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> ret = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( ret < 0 ) return ret ; if ( ret == 0 ) acl = NULL ; } ret = 0 ; break ; case ACL_TYPE_DEFAULT : if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EINVAL : 0 ; name = XATTR_NAME_POSIX_ACL_DEFAULT ; break ; default : return - EINVAL ; } if ( acl ) { size = posix_acl_xattr_size ( acl -> a_count ) ; value = kmalloc ( size , GFP_KERNEL ) ; if ( ! value ) { ret = - ENOMEM ; goto out ; } ret = posix_acl_to_xattr ( & init_user_ns , acl , value , size ) ; if ( ret < 0 ) goto out ; } ret = __btrfs_setxattr ( trans , inode , name , value , size , 0 ) ; out : kfree ( value ) ; if ( ! ret ) set_cached_acl ( inode , type , acl ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ret = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( ret ) return ret <S2SV_ModEnd> ; } ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-94(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18792\n\n```\nCWE-94 int StreamTcpPacket ( ThreadVars * tv , Packet * p , StreamTcpThread * stt , PacketQueue * pq ) { SCEnter ( ) ; DEBUG_ASSERT_FLOW_LOCKED ( p -> flow ) ; SCLogDebug ( \"p->pcap_cnt<S2SV_blank>%\" PRIu64 , p -> pcap_cnt ) ; HandleThreadId ( tv , p , stt ) ; TcpSession * ssn = ( TcpSession * ) p -> flow -> protoctx ; if ( ssn != NULL ) { ssn -> tcp_packet_flags |= p -> tcph -> th_flags ; if ( PKT_IS_TOSERVER ( p ) ) ssn -> client . tcp_flags |= p -> tcph -> th_flags ; else if ( PKT_IS_TOCLIENT ( p ) ) ssn -> server . tcp_flags |= p -> tcph -> th_flags ; if ( ssn -> flags & STREAMTCP_FLAG_ASYNC && ssn -> client . tcp_flags != 0 && ssn -> server . tcp_flags != 0 ) { SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>removing<S2SV_blank>ASYNC<S2SV_blank>flag<S2SV_blank>as<S2SV_blank>we<S2SV_blank>have<S2SV_blank>packets<S2SV_blank>on<S2SV_blank>both<S2SV_blank>sides\" , ssn ) ; ssn -> flags &= ~ STREAMTCP_FLAG_ASYNC ; } } if ( ( p -> tcph -> th_flags & ( TH_SYN | TH_ACK ) ) == ( TH_SYN | TH_ACK ) ) { StatsIncr ( tv , stt -> counter_tcp_synack ) ; } else if ( p -> tcph -> th_flags & ( TH_SYN ) ) { StatsIncr ( tv , stt -> counter_tcp_syn ) ; } if ( p -> tcph -> th_flags & ( TH_RST ) ) { StatsIncr ( tv , stt -> counter_tcp_rst ) ; } if ( ! ( p -> tcph -> th_flags & TH_ACK ) && TCP_GET_ACK ( p ) != 0 ) { <S2SV_StartBug> StreamTcpSetEvent ( p , STREAM_PKT_BROKEN_ACK ) ; <S2SV_EndBug> } if ( StreamTcpCheckFlowDrops ( p ) == 1 ) { SCLogDebug ( \"This<S2SV_blank>flow/stream<S2SV_blank>triggered<S2SV_blank>a<S2SV_blank>drop<S2SV_blank>rule\" ) ; FlowSetNoPacketInspectionFlag ( p -> flow ) ; DecodeSetNoPacketInspectionFlag ( p ) ; StreamTcpDisableAppLayer ( p -> flow ) ; PACKET_DROP ( p ) ; StreamTcpSessionPktFree ( p ) ; SCReturnInt ( 0 ) ; } if ( ssn == NULL || ssn -> state == TCP_NONE ) { if ( StreamTcpPacketStateNone ( tv , p , stt , ssn , & stt -> pseudo_queue ) == - 1 ) { goto error ; } if ( ssn != NULL ) SCLogDebug ( \"ssn->alproto<S2SV_blank>%\" PRIu16 \"\" , p -> flow -> alproto ) ; } else { if ( p -> flags & PKT_PSEUDO_STREAM_END ) { if ( PKT_IS_TOCLIENT ( p ) ) { ssn -> client . last_ack = TCP_GET_ACK ( p ) ; StreamTcpReassembleHandleSegment ( tv , stt -> ra_ctx , ssn , & ssn -> server , p , pq ) ; } else { ssn -> server . last_ack = TCP_GET_ACK ( p ) ; StreamTcpReassembleHandleSegment ( tv , stt -> ra_ctx , ssn , & ssn -> client , p , pq ) ; } goto skip ; } if ( p -> flow -> flags & FLOW_WRONG_THREAD || ssn -> client . flags & STREAMTCP_STREAM_FLAG_GAP || ssn -> server . flags & STREAMTCP_STREAM_FLAG_GAP ) { p -> flags |= PKT_STREAM_NO_EVENTS ; } if ( StreamTcpPacketIsKeepAlive ( ssn , p ) == 1 ) { goto skip ; } if ( StreamTcpPacketIsKeepAliveACK ( ssn , p ) == 1 ) { StreamTcpClearKeepAliveFlag ( ssn , p ) ; goto skip ; } StreamTcpClearKeepAliveFlag ( ssn , p ) ; if ( StreamTcpPacketIsFinShutdownAck ( ssn , p ) == 0 ) if ( StreamTcpPacketIsWindowUpdate ( ssn , p ) == 0 ) if ( StreamTcpPacketIsBadWindowUpdate ( ssn , p ) ) goto skip ; if ( StreamTcpStateDispatch ( tv , p , stt , ssn , & stt -> pseudo_queue , ssn -> state ) < 0 ) goto error ; skip : StreamTcpPacketCheckPostRst ( ssn , p ) ; if ( ssn -> state >= TCP_ESTABLISHED ) { p -> flags |= PKT_STREAM_EST ; } } if ( ssn != NULL ) { while ( stt -> pseudo_queue . len > 0 ) { SCLogDebug ( \"processing<S2SV_blank>pseudo<S2SV_blank>packet<S2SV_blank>/<S2SV_blank>stream<S2SV_blank>end\" ) ; Packet * np = PacketDequeue ( & stt -> pseudo_queue ) ; if ( np != NULL ) { if ( PKT_IS_TOSERVER ( np ) ) { SCLogDebug ( \"pseudo<S2SV_blank>packet<S2SV_blank>is<S2SV_blank>to<S2SV_blank>server\" ) ; StreamTcpReassembleHandleSegment ( tv , stt -> ra_ctx , ssn , & ssn -> client , np , NULL ) ; } else { SCLogDebug ( \"pseudo<S2SV_blank>packet<S2SV_blank>is<S2SV_blank>to<S2SV_blank>client\" ) ; StreamTcpReassembleHandleSegment ( tv , stt -> ra_ctx , ssn , & ssn -> server , np , NULL ) ; } PacketEnqueue ( pq , np ) ; } SCLogDebug ( \"processing<S2SV_blank>pseudo<S2SV_blank>packet<S2SV_blank>/<S2SV_blank>stream<S2SV_blank>end<S2SV_blank>done\" ) ; } if ( p -> flags & PKT_STREAM_MODIFIED ) { ReCalculateChecksum ( p ) ; } if ( ( ssn -> client . flags & STREAMTCP_STREAM_FLAG_DEPTH_REACHED ) || ( ssn -> server . flags & STREAMTCP_STREAM_FLAG_DEPTH_REACHED ) ) { if ( StreamTcpBypassEnabled ( ) ) { PacketBypassCallback ( p ) ; } } if ( ( ssn -> client . flags & STREAMTCP_STREAM_FLAG_DEPTH_REACHED ) || ( ssn -> server . flags & STREAMTCP_STREAM_FLAG_DEPTH_REACHED ) ) { p -> flags |= PKT_STREAM_NOPCAPLOG ; } if ( ( PKT_IS_TOSERVER ( p ) && ( ssn -> client . flags & STREAMTCP_STREAM_FLAG_NOREASSEMBLY ) ) || ( PKT_IS_TOCLIENT ( p ) && ( ssn -> server . flags & STREAMTCP_STREAM_FLAG_NOREASSEMBLY ) ) ) { p -> flags |= PKT_STREAM_NOPCAPLOG ; } if ( ssn -> flags & STREAMTCP_FLAG_BYPASS ) { if ( StreamTcpBypassEnabled ( ) ) { PacketBypassCallback ( p ) ; } } else if ( g_detect_disabled && ( ssn -> client . flags & STREAMTCP_STREAM_FLAG_NOREASSEMBLY ) && ( ssn -> server . flags & STREAMTCP_STREAM_FLAG_NOREASSEMBLY ) && StreamTcpBypassEnabled ( ) ) { SCLogDebug ( \"bypass<S2SV_blank>as<S2SV_blank>stream<S2SV_blank>is<S2SV_blank>dead<S2SV_blank>and<S2SV_blank>we<S2SV_blank>have<S2SV_blank>no<S2SV_blank>rules\" ) ; PacketBypassCallback ( p ) ; } } SCReturnInt ( 0 ) ; error : while ( stt -> pseudo_queue . len > 0 ) { Packet * np = PacketDequeue ( & stt -> pseudo_queue ) ; if ( np != NULL ) { PacketEnqueue ( pq , np ) ; } } if ( p -> flags & PKT_STREAM_MODIFIED ) { ReCalculateChecksum ( p ) ; } if ( StreamTcpInlineDropInvalid ( ) ) { DecodeSetNoPayloadInspectionFlag ( p ) ; PACKET_DROP ( p ) ; } SCReturnInt ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , STREAM_PKT_BROKEN_ACK ) ; goto error\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 static int su3000_power_ctrl ( struct dvb_usb_device * d , int i ) { struct dw2102_state * state = ( struct dw2102_state * ) d -> priv ; <S2SV_StartBug> u8 obuf [ ] = { 0xde , 0 } ; <S2SV_EndBug> info ( \"%s:<S2SV_blank>%d,<S2SV_blank>initialized<S2SV_blank>%d\" , __func__ , i , state -> initialized ) ; if ( i && ! state -> initialized ) { <S2SV_StartBug> state -> initialized = 1 ; <S2SV_EndBug> <S2SV_StartBug> return dvb_usb_generic_rw ( d , obuf , 2 , NULL , 0 , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> priv ; int ret = 0 <S2SV_ModEnd> ; info ( <S2SV_ModStart> initialized ) { mutex_lock ( & d -> data_mutex ) ; state -> data [ 0 ] = 0xde ; state -> data [ 1 ] = 0 ; <S2SV_ModStart> = 1 ; ret = <S2SV_ModEnd> dvb_usb_generic_rw ( d <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 2 , <S2SV_ModStart> 0 ) ; mutex_unlock ( & d -> data_mutex ) ; } return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 <S2SV_StartBug> void unix_notinflight ( struct file * fp ) <S2SV_EndBug> { struct sock * s = unix_get_socket ( fp ) ; spin_lock ( & unix_gc_lock ) ; if ( s ) { struct unix_sock * u = unix_sk ( s ) ; BUG_ON ( list_empty ( & u -> link ) ) ; if ( atomic_long_dec_and_test ( & u -> inflight ) ) list_del_init ( & u -> link ) ; unix_tot_inflight -- ; } <S2SV_StartBug> fp -> f_cred -> user -> unix_inflight -- ; <S2SV_EndBug> spin_unlock ( & unix_gc_lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void unix_notinflight ( struct user_struct * user , <S2SV_ModStart> -- ; } <S2SV_ModEnd> user -> unix_inflight\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5195\n\n```\nCWE-20 void init_util ( void ) { filegen_register ( statsdir , \"peerstats\" , & peerstats ) ; filegen_register ( statsdir , \"loopstats\" , & loopstats ) ; filegen_register ( statsdir , \"clockstats\" , & clockstats ) ; filegen_register ( statsdir , \"rawstats\" , & rawstats ) ; filegen_register ( statsdir , \"sysstats\" , & sysstats ) ; filegen_register ( statsdir , \"protostats\" , & protostats ) ; <S2SV_StartBug> # ifdef AUTOKEY <S2SV_EndBug> filegen_register ( statsdir , \"cryptostats\" , & cryptostats ) ; <S2SV_StartBug> # endif <S2SV_EndBug> # ifdef DEBUG_TIMING filegen_register ( statsdir , \"timingstats\" , & timingstats ) ; <S2SV_StartBug> # endif <S2SV_EndBug> step_callback = & ntpd_time_stepped ; # ifdef DEBUG atexit ( & uninit_util ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> protostats ) ; <S2SV_ModEnd> filegen_register ( statsdir <S2SV_ModStart> cryptostats ) ; <S2SV_ModEnd> filegen_register ( statsdir <S2SV_ModStart> timingstats ) ; <S2SV_ModEnd> step_callback = &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3070\n\n```\nCWE-476 int migrate_page_move_mapping ( struct address_space * mapping , struct page * newpage , struct page * page , struct buffer_head * head , enum migrate_mode mode , int extra_count ) { <S2SV_StartBug> int expected_count = 1 + extra_count ; <S2SV_EndBug> void * * pslot ; if ( ! mapping ) { if ( page_count ( page ) != expected_count ) return - EAGAIN ; set_page_memcg ( newpage , page_memcg ( page ) ) ; newpage -> index = page -> index ; newpage -> mapping = page -> mapping ; if ( PageSwapBacked ( page ) ) SetPageSwapBacked ( newpage ) ; return MIGRATEPAGE_SUCCESS ; <S2SV_StartBug> } <S2SV_EndBug> spin_lock_irq ( & mapping -> tree_lock ) ; pslot = radix_tree_lookup_slot ( & mapping -> page_tree , page_index ( page ) ) ; expected_count += 1 + page_has_private ( page ) ; if ( page_count ( page ) != expected_count || radix_tree_deref_slot_protected ( pslot , & mapping -> tree_lock ) != page ) { spin_unlock_irq ( & mapping -> tree_lock ) ; return - EAGAIN ; } if ( ! page_freeze_refs ( page , expected_count ) ) { spin_unlock_irq ( & mapping -> tree_lock ) ; return - EAGAIN ; } if ( mode == MIGRATE_ASYNC && head && ! buffer_migrate_lock_buffers ( head , mode ) ) { page_unfreeze_refs ( page , expected_count ) ; spin_unlock_irq ( & mapping -> tree_lock ) ; return - EAGAIN ; } set_page_memcg ( newpage , page_memcg ( page ) ) ; newpage -> index = page -> index ; newpage -> mapping = page -> mapping ; if ( PageSwapBacked ( page ) ) SetPageSwapBacked ( newpage ) ; get_page ( newpage ) ; if ( PageSwapCache ( page ) ) { SetPageSwapCache ( newpage ) ; set_page_private ( newpage , page_private ( page ) ) ; } <S2SV_StartBug> radix_tree_replace_slot ( pslot , newpage ) ; <S2SV_EndBug> page_unfreeze_refs ( page , expected_count - 1 ) ; <S2SV_StartBug> __dec_zone_page_state ( page , NR_FILE_PAGES ) ; <S2SV_EndBug> <S2SV_StartBug> __inc_zone_page_state ( newpage , NR_FILE_PAGES ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! PageSwapCache ( page ) && PageSwapBacked ( page ) ) { <S2SV_EndBug> __dec_zone_page_state ( page , NR_SHMEM ) ; __inc_zone_page_state ( newpage , NR_SHMEM ) ; } spin_unlock_irq ( & mapping -> tree_lock ) ; return MIGRATEPAGE_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> extra_count ) { struct zone * oldzone , * newzone ; int dirty ; <S2SV_ModStart> MIGRATEPAGE_SUCCESS ; } oldzone = page_zone ( page ) ; newzone = page_zone ( newpage ) ; <S2SV_ModStart> ) ; } dirty = PageDirty ( page ) ; if ( dirty ) { ClearPageDirty ( page ) ; SetPageDirty ( newpage ) ; } <S2SV_ModStart> 1 ) ; spin_unlock ( & mapping -> tree_lock ) ; if ( newzone != oldzone ) { __dec_zone_state ( oldzone <S2SV_ModEnd> , NR_FILE_PAGES ) <S2SV_ModStart> NR_FILE_PAGES ) ; __inc_zone_state ( newzone <S2SV_ModEnd> , NR_FILE_PAGES ) <S2SV_ModStart> ; if ( PageSwapBacked ( page ) && <S2SV_ModStart> ( page ) ) { __dec_zone_state ( oldzone , NR_SHMEM ) ; __inc_zone_state ( newzone , NR_SHMEM ) ; } if ( dirty && mapping_cap_account_dirty ( mapping ) ) { __dec_zone_state ( oldzone , NR_FILE_DIRTY ) ; __inc_zone_state ( newzone , NR_FILE_DIRTY ) ; } } local_irq_enable ( <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0205\n\n```\nCWE-119 static inline struct futex_hash_bucket * queue_lock ( struct futex_q * q ) { <S2SV_StartBug> struct futex_hash_bucket * hb ; <S2SV_EndBug> get_futex_key_refs ( & q -> key ) ; hb = hash_futex ( & q -> key ) ; q -> lock_ptr = & hb -> lock ; spin_lock ( & hb -> lock ) ; return hb ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> futex_hash_bucket * hb <S2SV_ModEnd> ; hb =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13011\n\n```\nCWE-119 static char * bittok2str_internal ( register const struct tok * lp , register const char * fmt , register u_int v , const char * sep ) { <S2SV_StartBug> static char buf [ 256 ] ; <S2SV_EndBug> int buflen = 0 ; register u_int rotbit ; register u_int tokval ; const char * sepstr = \"\" ; while ( lp != NULL && lp -> s != NULL ) { tokval = lp -> v ; rotbit = 1 ; while ( rotbit != 0 ) { if ( tokval == ( v & rotbit ) ) { <S2SV_StartBug> buflen += snprintf ( buf + buflen , sizeof ( buf ) - buflen , \"%s%s\" , <S2SV_EndBug> <S2SV_StartBug> sepstr , lp -> s ) ; <S2SV_EndBug> sepstr = sep ; break ; } rotbit = rotbit << 1 ; } lp ++ ; } <S2SV_StartBug> if ( buflen == 0 ) <S2SV_EndBug> ( void ) snprintf ( buf , sizeof ( buf ) , fmt == NULL ? \"#%08x\" : fmt , v ) ; return ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ 1024 + 1 ] ; char * bufp = buf ; size_t space_left = sizeof ( buf ) , string_size <S2SV_ModEnd> ; register u_int <S2SV_ModStart> ) ) { if ( space_left <= 1 ) return ( buf ) ; string_size = strlcpy ( bufp , sepstr , space_left ) ; if ( string_size >= space_left ) return ( buf ) ; bufp += string_size ; space_left -= string_size ; if ( space_left <= 1 ) return ( buf ) ; string_size = strlcpy ( bufp <S2SV_ModEnd> , lp -> <S2SV_ModStart> lp -> s , space_left ) ; if ( string_size >= space_left ) return ( buf ) ; bufp += string_size ; space_left -= string_size <S2SV_ModEnd> ; sepstr = <S2SV_ModStart> } if ( bufp == buf <S2SV_ModEnd> ) ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14172\n\n```\nCWE-834 static Image * ReadPSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define BoundingBox \"BoundingBox:\" # define BeginDocument \"BeginDocument:\" # define BeginXMPPacket \"<?xpacket<S2SV_blank>begin=\" # define EndXMPPacket \"<?xpacket<S2SV_blank>end=\" # define ICCProfile \"BeginICCProfile:\" # define CMYKCustomColor \"CMYKCustomColor:\" # define CMYKProcessColor \"CMYKProcessColor:\" # define DocumentMedia \"DocumentMedia:\" # define DocumentCustomColors \"DocumentCustomColors:\" # define DocumentProcessColors \"DocumentProcessColors:\" # define EndDocument \"EndDocument:\" # define HiResBoundingBox \"HiResBoundingBox:\" # define ImageData \"ImageData:\" # define PageBoundingBox \"PageBoundingBox:\" # define LanguageLevel \"LanguageLevel:\" # define PageMedia \"PageMedia:\" # define Pages \"Pages:\" # define PhotoshopProfile \"BeginPhotoshop:\" # define PostscriptLevel \"!PS-\" # define RenderPostscriptText \"<S2SV_blank><S2SV_blank>Rendering<S2SV_blank>Postscript...<S2SV_blank><S2SV_blank>\" # define SpotColor \"+<S2SV_blank>\" char command [ MaxTextExtent ] , * density , filename [ MaxTextExtent ] , geometry [ MaxTextExtent ] , input_filename [ MaxTextExtent ] , message [ MaxTextExtent ] , * options , postscript_filename [ MaxTextExtent ] ; const char * option ; const DelegateInfo * delegate_info ; GeometryInfo geometry_info ; Image * image , * next , * postscript_image ; ImageInfo * read_info ; int c , file ; MagickBooleanType cmyk , fitPage , skip , status ; MagickStatusType flags ; PointInfo delta , resolution ; RectangleInfo page ; register char * p ; register ssize_t i ; SegmentInfo bounds , hires_bounds ; short int hex_digits [ 256 ] ; size_t length , priority ; ssize_t count ; StringInfo * profile ; unsigned long columns , extent , language_level , pages , rows , scene , spotcolor ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } status = AcquireUniqueSymbolicLink ( image_info -> filename , input_filename ) ; if ( status == MagickFalse ) { ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( hex_digits , 0 , sizeof ( hex_digits ) ) ; hex_digits [ ( int ) '0' ] = 0 ; hex_digits [ ( int ) '1' ] = 1 ; hex_digits [ ( int ) '2' ] = 2 ; hex_digits [ ( int ) '3' ] = 3 ; hex_digits [ ( int ) '4' ] = 4 ; hex_digits [ ( int ) '5' ] = 5 ; hex_digits [ ( int ) '6' ] = 6 ; hex_digits [ ( int ) '7' ] = 7 ; hex_digits [ ( int ) '8' ] = 8 ; hex_digits [ ( int ) '9' ] = 9 ; hex_digits [ ( int ) 'a' ] = 10 ; hex_digits [ ( int ) 'b' ] = 11 ; hex_digits [ ( int ) 'c' ] = 12 ; hex_digits [ ( int ) 'd' ] = 13 ; hex_digits [ ( int ) 'e' ] = 14 ; hex_digits [ ( int ) 'f' ] = 15 ; hex_digits [ ( int ) 'A' ] = 10 ; hex_digits [ ( int ) 'B' ] = 11 ; hex_digits [ ( int ) 'C' ] = 12 ; hex_digits [ ( int ) 'D' ] = 13 ; hex_digits [ ( int ) 'E' ] = 14 ; hex_digits [ ( int ) 'F' ] = 15 ; delta . x = DefaultResolution ; delta . y = DefaultResolution ; if ( ( image -> x_resolution == 0.0 ) || ( image -> y_resolution == 0.0 ) ) { flags = ParseGeometry ( PSDensityGeometry , & geometry_info ) ; image -> x_resolution = geometry_info . rho ; image -> y_resolution = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> y_resolution = image -> x_resolution ; } if ( image_info -> density != ( char * ) NULL ) { flags = ParseGeometry ( image_info -> density , & geometry_info ) ; image -> x_resolution = geometry_info . rho ; image -> y_resolution = geometry_info . sigma ; if ( ( flags & SigmaValue ) == 0 ) image -> y_resolution = image -> x_resolution ; } ( void ) ParseAbsoluteGeometry ( PSPageGeometry , & page ) ; if ( image_info -> page != ( char * ) NULL ) ( void ) ParseAbsoluteGeometry ( image_info -> page , & page ) ; resolution . x = image -> x_resolution ; resolution . y = image -> y_resolution ; page . width = ( size_t ) ceil ( ( double ) ( page . width * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * resolution . y / delta . y ) - 0.5 ) ; ( void ) ResetMagickMemory ( & bounds , 0 , sizeof ( bounds ) ) ; ( void ) ResetMagickMemory ( command , 0 , sizeof ( command ) ) ; cmyk = image_info -> colorspace == CMYKColorspace ? MagickTrue : MagickFalse ; ( void ) ResetMagickMemory ( & hires_bounds , 0 , sizeof ( hires_bounds ) ) ; priority = 0 ; columns = 0 ; rows = 0 ; extent = 0 ; spotcolor = 0 ; language_level = 1 ; skip = MagickFalse ; pages = ( ~ 0UL ) ; p = command ; for ( c = ReadBlobByte ( image ) ; c != EOF ; c = ReadBlobByte ( image ) ) { * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MaxTextExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( BeginDocument , command , strlen ( BeginDocument ) ) == 0 ) skip = MagickTrue ; if ( LocaleNCompare ( EndDocument , command , strlen ( EndDocument ) ) == 0 ) skip = MagickFalse ; if ( skip != MagickFalse ) continue ; if ( LocaleNCompare ( PostscriptLevel , command , strlen ( PostscriptLevel ) ) == 0 ) { ( void ) SetImageProperty ( image , \"ps:Level\" , command + 4 ) ; if ( GlobExpression ( command , \"*EPSF-*\" , MagickTrue ) != MagickFalse ) pages = 1 ; } if ( LocaleNCompare ( LanguageLevel , command , strlen ( LanguageLevel ) ) == 0 ) ( void ) sscanf ( command , LanguageLevel \"<S2SV_blank>%lu\" , & language_level ) ; if ( LocaleNCompare ( Pages , command , strlen ( Pages ) ) == 0 ) ( void ) sscanf ( command , Pages \"<S2SV_blank>%lu\" , & pages ) ; if ( LocaleNCompare ( ImageData , command , strlen ( ImageData ) ) == 0 ) ( void ) sscanf ( command , ImageData \"<S2SV_blank>%lu<S2SV_blank>%lu\" , & columns , & rows ) ; if ( LocaleNCompare ( ICCProfile , command , strlen ( ICCProfile ) ) == 0 ) { unsigned char * datum ; profile = AcquireStringInfo ( MaxTextExtent ) ; datum = GetStringInfoDatum ( profile ) ; for ( i = 0 ; ( c = ProfileInteger ( image , hex_digits ) ) != EOF ; i ++ ) { if ( i >= ( ssize_t ) GetStringInfoLength ( profile ) ) { SetStringInfoLength ( profile , ( size_t ) i << 1 ) ; datum = GetStringInfoDatum ( profile ) ; } datum [ i ] = ( unsigned char ) c ; } SetStringInfoLength ( profile , ( size_t ) i + 1 ) ; ( void ) SetImageProfile ( image , \"icc\" , profile ) ; profile = DestroyStringInfo ( profile ) ; continue ; } if ( LocaleNCompare ( PhotoshopProfile , command , strlen ( PhotoshopProfile ) ) == 0 ) { unsigned char * p ; count = ( ssize_t ) sscanf ( command , PhotoshopProfile \"<S2SV_blank>%lu\" , & extent ) ; if ( count != 1 ) continue ; <S2SV_StartBug> length = extent ; <S2SV_EndBug> profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; if ( profile != ( StringInfo * ) NULL ) { p = GetStringInfoDatum ( profile ) ; for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) * p ++ = ( unsigned char ) ProfileInteger ( image , hex_digits ) ; ( void ) SetImageProfile ( image , \"8bim\" , profile ) ; profile = DestroyStringInfo ( profile ) ; } continue ; } if ( LocaleNCompare ( BeginXMPPacket , command , strlen ( BeginXMPPacket ) ) == 0 ) { register size_t i ; p = command ; profile = StringToStringInfo ( command ) ; for ( i = GetStringInfoLength ( profile ) - 1 ; c != EOF ; i ++ ) { SetStringInfoLength ( profile , i + 1 ) ; c = ReadBlobByte ( image ) ; GetStringInfoDatum ( profile ) [ i ] = ( unsigned char ) c ; * p ++ = ( char ) c ; if ( ( strchr ( \"\\\\n\\\\r%\" , c ) == ( char * ) NULL ) && ( ( size_t ) ( p - command ) < ( MaxTextExtent - 1 ) ) ) continue ; * p = '\\\\0' ; p = command ; if ( LocaleNCompare ( EndXMPPacket , command , strlen ( EndXMPPacket ) ) == 0 ) break ; } SetStringInfoLength ( profile , i ) ; ( void ) SetImageProfile ( image , \"xmp\" , profile ) ; profile = DestroyStringInfo ( profile ) ; continue ; } length = strlen ( DocumentProcessColors ) ; if ( LocaleNCompare ( DocumentProcessColors , command , length ) == 0 ) { if ( ( GlobExpression ( command , \"*Cyan*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Magenta*\" , MagickTrue ) != MagickFalse ) || ( GlobExpression ( command , \"*Yellow*\" , MagickTrue ) != MagickFalse ) ) cmyk = MagickTrue ; } if ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) cmyk = MagickTrue ; if ( LocaleNCompare ( CMYKProcessColor , command , strlen ( CMYKProcessColor ) ) == 0 ) cmyk = MagickTrue ; length = strlen ( DocumentCustomColors ) ; if ( ( LocaleNCompare ( DocumentCustomColors , command , length ) == 0 ) || ( LocaleNCompare ( CMYKCustomColor , command , strlen ( CMYKCustomColor ) ) == 0 ) || ( LocaleNCompare ( SpotColor , command , strlen ( SpotColor ) ) == 0 ) ) { char property [ MaxTextExtent ] , * value ; register char * p ; ( void ) FormatLocaleString ( property , MaxTextExtent , \"ps:SpotColor-%.20g\" , ( double ) ( spotcolor ++ ) ) ; for ( p = command ; * p != '\\\\0' ; p ++ ) if ( isspace ( ( int ) ( unsigned char ) * p ) != 0 ) break ; value = AcquireString ( p ) ; ( void ) SubstituteString ( & value , \"(\" , \"\" ) ; ( void ) SubstituteString ( & value , \")\" , \"\" ) ; ( void ) StripString ( value ) ; ( void ) SetImageProperty ( image , property , value ) ; value = DestroyString ( value ) ; continue ; } if ( image_info -> page != ( char * ) NULL ) continue ; count = 0 ; i = 0 ; if ( LocaleNCompare ( BoundingBox , command , strlen ( BoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , BoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 2 ; } if ( LocaleNCompare ( DocumentMedia , command , strlen ( DocumentMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , DocumentMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( HiResBoundingBox , command , strlen ( HiResBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , HiResBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 3 ; } if ( LocaleNCompare ( PageBoundingBox , command , strlen ( PageBoundingBox ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageBoundingBox \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( LocaleNCompare ( PageMedia , command , strlen ( PageMedia ) ) == 0 ) { count = ( ssize_t ) sscanf ( command , PageMedia \"<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf<S2SV_blank>%lf\" , & bounds . x1 , & bounds . y1 , & bounds . x2 , & bounds . y2 ) ; i = 1 ; } if ( ( count != 4 ) || ( i < ( ssize_t ) priority ) ) continue ; if ( ( fabs ( bounds . x2 - bounds . x1 ) <= fabs ( hires_bounds . x2 - hires_bounds . x1 ) ) || ( fabs ( bounds . y2 - bounds . y1 ) <= fabs ( hires_bounds . y2 - hires_bounds . y1 ) ) ) if ( i == ( ssize_t ) priority ) continue ; hires_bounds = bounds ; priority = i ; } if ( ( fabs ( hires_bounds . x2 - hires_bounds . x1 ) >= MagickEpsilon ) && ( fabs ( hires_bounds . y2 - hires_bounds . y1 ) >= MagickEpsilon ) ) { ( void ) FormatLocaleString ( geometry , MaxTextExtent , \"%gx%g%+.15g%+.15g\" , hires_bounds . x2 - hires_bounds . x1 , hires_bounds . y2 - hires_bounds . y1 , hires_bounds . x1 , hires_bounds . y1 ) ; ( void ) SetImageProperty ( image , \"ps:HiResBoundingBox\" , geometry ) ; page . width = ( size_t ) ceil ( ( double ) ( ( hires_bounds . x2 - hires_bounds . x1 ) * resolution . x / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( ( hires_bounds . y2 - hires_bounds . y1 ) * resolution . y / delta . y ) - 0.5 ) ; } fitPage = MagickFalse ; option = GetImageOption ( image_info , \"eps:fit-page\" ) ; if ( option != ( char * ) NULL ) { char * geometry ; MagickStatusType flags ; geometry = GetPageGeometry ( option ) ; flags = ParseMetaGeometry ( geometry , & page . x , & page . y , & page . width , & page . height ) ; if ( flags == NoValue ) { ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , OptionError , \"InvalidGeometry\" , \"`%s\\'\" , option ) ; image = DestroyImage ( image ) ; return ( ( Image * ) NULL ) ; } page . width = ( size_t ) ceil ( ( double ) ( page . width * image -> x_resolution / delta . x ) - 0.5 ) ; page . height = ( size_t ) ceil ( ( double ) ( page . height * image -> y_resolution / delta . y ) - 0.5 ) ; geometry = DestroyString ( geometry ) ; fitPage = MagickTrue ; } ( void ) CloseBlob ( image ) ; if ( IssRGBCompatibleColorspace ( image_info -> colorspace ) != MagickFalse ) cmyk = MagickFalse ; file = AcquireUniqueFileResource ( postscript_filename ) ; if ( file == - 1 ) { ThrowFileException ( & image -> exception , FileOpenError , \"UnableToOpenFile\" , image_info -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) CopyMagickString ( command , \"/setpagedevice<S2SV_blank>{pop}<S2SV_blank>bind<S2SV_blank>1<S2SV_blank>index<S2SV_blank>where<S2SV_blank>{\" \"dup<S2SV_blank>wcheck<S2SV_blank>{3<S2SV_blank>1<S2SV_blank>roll<S2SV_blank>put}<S2SV_blank>{pop<S2SV_blank>def}<S2SV_blank>ifelse}<S2SV_blank>{def}<S2SV_blank>ifelse\\\\n\" \"<</UseCIEColor<S2SV_blank>true>>setpagedevice\\\\n\" , MaxTextExtent ) ; count = write ( file , command , ( unsigned int ) strlen ( command ) ) ; if ( image_info -> page == ( char * ) NULL ) { char translate_geometry [ MaxTextExtent ] ; ( void ) FormatLocaleString ( translate_geometry , MaxTextExtent , \"%g<S2SV_blank>%g<S2SV_blank>translate\\\\n\" , - hires_bounds . x1 , - hires_bounds . y1 ) ; count = write ( file , translate_geometry , ( unsigned int ) strlen ( translate_geometry ) ) ; } file = close ( file ) - 1 ; if ( image_info -> monochrome != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:mono\" , ( char * ) NULL , exception ) ; else if ( cmyk != MagickFalse ) delegate_info = GetDelegateInfo ( \"ps:cmyk\" , ( char * ) NULL , exception ) ; else delegate_info = GetDelegateInfo ( \"ps:alpha\" , ( char * ) NULL , exception ) ; if ( delegate_info == ( const DelegateInfo * ) NULL ) { ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } density = AcquireString ( \"\" ) ; options = AcquireString ( \"\" ) ; ( void ) FormatLocaleString ( density , MaxTextExtent , \"%gx%g\" , resolution . x , resolution . y ) ; ( void ) FormatLocaleString ( options , MaxTextExtent , \"-g%.20gx%.20g<S2SV_blank>\" , ( double ) page . width , ( double ) page . height ) ; read_info = CloneImageInfo ( image_info ) ; * read_info -> magick = '\\\\0' ; if ( read_info -> number_scenes != 0 ) { char pages [ MaxTextExtent ] ; ( void ) FormatLocaleString ( pages , MaxTextExtent , \"-dFirstPage=%.20g<S2SV_blank>\" \"-dLastPage=%.20g<S2SV_blank>\" , ( double ) read_info -> scene + 1 , ( double ) ( read_info -> scene + read_info -> number_scenes ) ) ; ( void ) ConcatenateMagickString ( options , pages , MaxTextExtent ) ; read_info -> number_scenes = 0 ; if ( read_info -> scenes != ( char * ) NULL ) * read_info -> scenes = '\\\\0' ; } if ( * image_info -> magick == 'E' ) { option = GetImageOption ( image_info , \"eps:use-cropbox\" ) ; if ( ( option == ( const char * ) NULL ) || ( IsStringTrue ( option ) != MagickFalse ) ) ( void ) ConcatenateMagickString ( options , \"-dEPSCrop<S2SV_blank>\" , MaxTextExtent ) ; if ( fitPage != MagickFalse ) ( void ) ConcatenateMagickString ( options , \"-dEPSFitPage<S2SV_blank>\" , MaxTextExtent ) ; } ( void ) CopyMagickString ( filename , read_info -> filename , MaxTextExtent ) ; ( void ) AcquireUniqueFilename ( filename ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; ( void ) ConcatenateMagickString ( filename , \"%d\" , MaxTextExtent ) ; ( void ) FormatLocaleString ( command , MaxTextExtent , GetDelegateCommands ( delegate_info ) , read_info -> antialias != MagickFalse ? 4 : 1 , read_info -> antialias != MagickFalse ? 4 : 1 , density , options , filename , postscript_filename , input_filename ) ; options = DestroyString ( options ) ; density = DestroyString ( density ) ; * message = '\\\\0' ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; ( void ) InterpretImageFilename ( image_info , image , filename , 1 , read_info -> filename ) ; if ( ( status == MagickFalse ) || ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) ) { ( void ) ConcatenateMagickString ( command , \"<S2SV_blank>-c<S2SV_blank>showpage\" , MaxTextExtent ) ; status = InvokePostscriptDelegate ( read_info -> verbose , command , message , exception ) ; } ( void ) RelinquishUniqueFileResource ( postscript_filename ) ; ( void ) RelinquishUniqueFileResource ( input_filename ) ; postscript_image = ( Image * ) NULL ; if ( status == MagickFalse ) for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; } else for ( i = 1 ; ; i ++ ) { ( void ) InterpretImageFilename ( image_info , image , filename , ( int ) i , read_info -> filename ) ; if ( IsPostscriptRendered ( read_info -> filename ) == MagickFalse ) break ; read_info -> blob = NULL ; read_info -> length = 0 ; next = ReadImage ( read_info , exception ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; if ( next == ( Image * ) NULL ) break ; AppendImageToList ( & postscript_image , next ) ; } ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( postscript_image == ( Image * ) NULL ) { if ( * message != '\\\\0' ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , DelegateError , \"PostscriptDelegateFailed\" , \"`%s\\'\" , message ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } if ( LocaleCompare ( postscript_image -> magick , \"BMP\" ) == 0 ) { Image * cmyk_image ; cmyk_image = ConsolidateCMYKImages ( postscript_image , exception ) ; if ( cmyk_image != ( Image * ) NULL ) { postscript_image = DestroyImageList ( postscript_image ) ; postscript_image = cmyk_image ; } } if ( image_info -> number_scenes != 0 ) { Image * clone_image ; register ssize_t i ; for ( i = 0 ; i < ( ssize_t ) image_info -> scene ; i ++ ) { clone_image = CloneImage ( postscript_image , 1 , 1 , MagickTrue , exception ) ; if ( clone_image != ( Image * ) NULL ) PrependImageToList ( & postscript_image , clone_image ) ; } } do { ( void ) CopyMagickString ( postscript_image -> filename , filename , MaxTextExtent ) ; ( void ) CopyMagickString ( postscript_image -> magick , image -> magick , MaxTextExtent ) ; if ( columns != 0 ) postscript_image -> magick_columns = columns ; if ( rows != 0 ) postscript_image -> magick_rows = rows ; postscript_image -> page = page ; ( void ) CloneImageProfiles ( postscript_image , image ) ; ( void ) CloneImageProperties ( postscript_image , image ) ; next = SyncNextImageInList ( postscript_image ) ; if ( next != ( Image * ) NULL ) postscript_image = next ; } while ( next != ( Image * ) NULL ) ; image = DestroyImageList ( image ) ; scene = 0 ; for ( next = GetFirstImageInList ( postscript_image ) ; next != ( Image * ) NULL ; ) { next -> scene = scene ++ ; next = GetNextImageInList ( next ) ; } return ( GetFirstImageInList ( postscript_image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length = extent ; if ( length > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 int ssh_packet_set_state ( struct ssh * ssh , struct sshbuf * m ) { struct session_state * state = ssh -> state ; const u_char * ssh1key , * ivin , * ivout , * keyin , * keyout , * input , * output ; size_t ssh1keylen , rlen , slen , ilen , olen ; int r ; u_int ssh1cipher = 0 ; if ( ! compat20 ) { if ( ( r = sshbuf_get_u32 ( m , & state -> remote_protocol_flags ) ) != 0 || ( r = sshbuf_get_u32 ( m , & ssh1cipher ) ) != 0 || ( r = sshbuf_get_string_direct ( m , & ssh1key , & ssh1keylen ) ) != 0 || ( r = sshbuf_get_string_direct ( m , & ivout , & slen ) ) != 0 || ( r = sshbuf_get_string_direct ( m , & ivin , & rlen ) ) != 0 ) return r ; if ( ssh1cipher > INT_MAX ) return SSH_ERR_KEY_UNKNOWN_CIPHER ; ssh_packet_set_encryption_key ( ssh , ssh1key , ssh1keylen , ( int ) ssh1cipher ) ; if ( cipher_get_keyiv_len ( state -> send_context ) != ( int ) slen || cipher_get_keyiv_len ( state -> receive_context ) != ( int ) rlen ) return SSH_ERR_INVALID_FORMAT ; if ( ( r = cipher_set_keyiv ( state -> send_context , ivout ) ) != 0 || ( r = cipher_set_keyiv ( state -> receive_context , ivin ) ) != 0 ) return r ; } else { if ( ( r = kex_from_blob ( m , & ssh -> kex ) ) != 0 || ( r = newkeys_from_blob ( m , ssh , MODE_OUT ) ) != 0 || ( r = newkeys_from_blob ( m , ssh , MODE_IN ) ) != 0 || ( r = sshbuf_get_u64 ( m , & state -> rekey_limit ) ) != 0 || ( r = sshbuf_get_u32 ( m , & state -> rekey_interval ) ) != 0 || ( r = sshbuf_get_u32 ( m , & state -> p_send . seqnr ) ) != 0 || ( r = sshbuf_get_u64 ( m , & state -> p_send . blocks ) ) != 0 || ( r = sshbuf_get_u32 ( m , & state -> p_send . packets ) ) != 0 || ( r = sshbuf_get_u64 ( m , & state -> p_send . bytes ) ) != 0 || ( r = sshbuf_get_u32 ( m , & state -> p_read . seqnr ) ) != 0 || ( r = sshbuf_get_u64 ( m , & state -> p_read . blocks ) ) != 0 || ( r = sshbuf_get_u32 ( m , & state -> p_read . packets ) ) != 0 || ( r = sshbuf_get_u64 ( m , & state -> p_read . bytes ) ) != 0 ) return r ; state -> rekey_time = monotime ( ) ; if ( ( r = ssh_set_newkeys ( ssh , MODE_IN ) ) != 0 || ( r = ssh_set_newkeys ( ssh , MODE_OUT ) ) != 0 ) return r ; } if ( ( r = sshbuf_get_string_direct ( m , & keyout , & slen ) ) != 0 || ( r = sshbuf_get_string_direct ( m , & keyin , & rlen ) ) != 0 ) return r ; if ( cipher_get_keycontext ( state -> send_context , NULL ) != ( int ) slen || cipher_get_keycontext ( state -> receive_context , NULL ) != ( int ) rlen ) return SSH_ERR_INVALID_FORMAT ; cipher_set_keycontext ( state -> send_context , keyout ) ; cipher_set_keycontext ( state -> receive_context , keyin ) ; <S2SV_StartBug> if ( ( r = ssh_packet_set_compress_state ( ssh , m ) ) != 0 || <S2SV_EndBug> ( r = ssh_packet_set_postauth ( ssh ) ) != 0 ) return r ; sshbuf_reset ( state -> input ) ; sshbuf_reset ( state -> output ) ; if ( ( r = sshbuf_get_string_direct ( m , & input , & ilen ) ) != 0 || ( r = sshbuf_get_string_direct ( m , & output , & olen ) ) != 0 || ( r = sshbuf_put ( state -> input , input , ilen ) ) != 0 || ( r = sshbuf_put ( state -> output , output , olen ) ) != 0 ) return r ; if ( sshbuf_len ( m ) ) return SSH_ERR_INVALID_FORMAT ; debug3 ( \"%s:<S2SV_blank>done\" , __func__ ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( r = <S2SV_ModEnd> ssh_packet_set_postauth ( ssh\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12819\n\n```\nCWE-416 int __mdiobus_register ( struct mii_bus * bus , struct module * owner ) { struct mdio_device * mdiodev ; int i , err ; struct gpio_desc * gpiod ; if ( NULL == bus || NULL == bus -> name || NULL == bus -> read || NULL == bus -> write ) return - EINVAL ; BUG_ON ( bus -> state != MDIOBUS_ALLOCATED && bus -> state != MDIOBUS_UNREGISTERED ) ; bus -> owner = owner ; bus -> dev . parent = bus -> parent ; bus -> dev . class = & mdio_bus_class ; bus -> dev . groups = NULL ; dev_set_name ( & bus -> dev , \"%s\" , bus -> id ) ; err = device_register ( & bus -> dev ) ; if ( err ) { pr_err ( \"mii_bus<S2SV_blank>%s<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>register\\\\n\" , bus -> id ) ; <S2SV_StartBug> put_device ( & bus -> dev ) ; <S2SV_EndBug> return - EINVAL ; } mutex_init ( & bus -> mdio_lock ) ; gpiod = devm_gpiod_get_optional ( & bus -> dev , \"reset\" , GPIOD_OUT_LOW ) ; if ( IS_ERR ( gpiod ) ) { dev_err ( & bus -> dev , \"mii_bus<S2SV_blank>%s<S2SV_blank>couldn\\'t<S2SV_blank>get<S2SV_blank>reset<S2SV_blank>GPIO\\\\n\" , bus -> id ) ; device_del ( & bus -> dev ) ; return PTR_ERR ( gpiod ) ; } else if ( gpiod ) { bus -> reset_gpiod = gpiod ; gpiod_set_value_cansleep ( gpiod , 1 ) ; udelay ( bus -> reset_delay_us ) ; gpiod_set_value_cansleep ( gpiod , 0 ) ; } if ( bus -> reset ) bus -> reset ( bus ) ; for ( i = 0 ; i < PHY_MAX_ADDR ; i ++ ) { if ( ( bus -> phy_mask & ( 1 << i ) ) == 0 ) { struct phy_device * phydev ; phydev = mdiobus_scan ( bus , i ) ; if ( IS_ERR ( phydev ) && ( PTR_ERR ( phydev ) != - ENODEV ) ) { err = PTR_ERR ( phydev ) ; goto error ; } } } mdiobus_setup_mdiodev_from_board_info ( bus , mdiobus_create_device ) ; bus -> state = MDIOBUS_REGISTERED ; pr_info ( \"%s:<S2SV_blank>probed\\\\n\" , bus -> name ) ; return 0 ; error : while ( -- i >= 0 ) { mdiodev = bus -> mdio_map [ i ] ; if ( ! mdiodev ) continue ; mdiodev -> device_remove ( mdiodev ) ; mdiodev -> device_free ( mdiodev ) ; } if ( bus -> reset_gpiod ) gpiod_set_value_cansleep ( bus -> reset_gpiod , 1 ) ; device_del ( & bus -> dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> id ) ; <S2SV_ModEnd> return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14604\n\n```\nCWE-20 static void untrusted_launcher_response_callback ( GtkDialog * dialog , int response_id , ActivateParametersDesktop * parameters ) { GdkScreen * screen ; char * uri ; GFile * file ; switch ( response_id ) { <S2SV_StartBug> case RESPONSE_RUN : <S2SV_EndBug> { screen = gtk_widget_get_screen ( GTK_WIDGET ( parameters -> parent_window ) ) ; uri = nautilus_file_get_uri ( parameters -> file ) ; DEBUG ( \"Launching<S2SV_blank>untrusted<S2SV_blank>launcher<S2SV_blank>%s\" , uri ) ; nautilus_launch_desktop_file ( screen , uri , NULL , parameters -> parent_window ) ; g_free ( uri ) ; <S2SV_StartBug> } <S2SV_EndBug> break ; case RESPONSE_MARK_TRUSTED : { file = nautilus_file_get_location ( parameters -> file ) ; nautilus_file_mark_desktop_file_trusted ( file , parameters -> parent_window , TRUE , NULL , NULL ) ; g_object_unref ( file ) ; } break ; default : { } break ; } gtk_widget_destroy ( GTK_WIDGET ( dialog ) ) ; activate_parameters_desktop_free ( parameters ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { case GTK_RESPONSE_OK : { file = nautilus_file_get_location ( parameters -> file ) ; nautilus_file_set_metadata ( parameters -> file , NAUTILUS_METADATA_KEY_DESKTOP_FILE_TRUSTED , NULL , \"yes\" ) ; nautilus_file_mark_desktop_file_executable ( file , parameters -> parent_window , TRUE , NULL , NULL ) ; nautilus_file_invalidate_all_attributes ( parameters -> file ) ; <S2SV_ModEnd> screen = gtk_widget_get_screen <S2SV_ModStart> uri ) ; <S2SV_ModEnd> g_object_unref ( file\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static FILE * open_outfile ( const char * name ) { if ( strcmp ( \"-\" , name ) == 0 ) { set_binary_mode ( stdout ) ; return stdout ; } else { FILE * file = fopen ( name , \"wb\" ) ; if ( ! file ) <S2SV_StartBug> fatal ( \"Failed<S2SV_blank>to<S2SV_blank>output<S2SV_blank>file<S2SV_blank>%s\" , name ) ; <S2SV_EndBug> return file ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) fatal ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>output<S2SV_blank>file<S2SV_blank>\\'%s\\'\" <S2SV_ModEnd> , name )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0228\n\n```\nCWE-20 static int lua_websocket_read ( lua_State * L ) { apr_socket_t * sock ; apr_status_t rv ; <S2SV_StartBug> int n = 0 ; <S2SV_EndBug> apr_size_t len = 1 ; apr_size_t plen = 0 ; unsigned short payload_short = 0 ; apr_uint64_t payload_long = 0 ; unsigned char * mask_bytes ; char byte ; int plaintext ; request_rec * r = ap_lua_check_request_rec ( L , 1 ) ; plaintext = ap_lua_ssl_is_https ( r -> connection ) ? 0 : 1 ; mask_bytes = apr_pcalloc ( r -> pool , 4 ) ; <S2SV_StartBug> sock = ap_get_conn_socket ( r -> connection ) ; <S2SV_EndBug> if ( plaintext ) { rv = apr_socket_recv ( sock , & byte , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , & byte , 1 ) ; } if ( rv == APR_SUCCESS ) { unsigned char ubyte , fin , opcode , mask , payload ; ubyte = ( unsigned char ) byte ; fin = ubyte >> ( CHAR_BIT - 1 ) ; opcode = ubyte & 0xf ; if ( plaintext ) { rv = apr_socket_recv ( sock , & byte , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , & byte , 1 ) ; } if ( rv == APR_SUCCESS ) { ubyte = ( unsigned char ) byte ; mask = ubyte >> ( CHAR_BIT - 1 ) ; payload = ubyte & 0x7f ; plen = payload ; if ( payload == 126 ) { len = 2 ; if ( plaintext ) { rv = apr_socket_recv ( sock , ( char * ) & payload_short , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , ( char * ) & payload_short , 2 ) ; } payload_short = ntohs ( payload_short ) ; if ( rv == APR_SUCCESS ) { plen = payload_short ; } else { return 0 ; } } if ( payload == 127 ) { len = 8 ; if ( plaintext ) { rv = apr_socket_recv ( sock , ( char * ) & payload_long , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , ( char * ) & payload_long , 8 ) ; } if ( rv == APR_SUCCESS ) { plen = ap_ntoh64 ( & payload_long ) ; } else { return 0 ; } } ap_log_rerror ( APLOG_MARK , APLOG_DEBUG , 0 , r , \"Websocket:<S2SV_blank>Reading<S2SV_blank>%\" APR_SIZE_T_FMT \"<S2SV_blank>(%s)<S2SV_blank>bytes,<S2SV_blank>masking<S2SV_blank>is<S2SV_blank>%s.<S2SV_blank>%s\" , plen , ( payload >= 126 ) ? \"extra<S2SV_blank>payload\" : \"no<S2SV_blank>extra<S2SV_blank>payload\" , mask ? \"on\" : \"off\" , fin ? \"This<S2SV_blank>is<S2SV_blank>a<S2SV_blank>final<S2SV_blank>frame\" : \"more<S2SV_blank>to<S2SV_blank>follow\" ) ; if ( mask ) { len = 4 ; if ( plaintext ) { rv = apr_socket_recv ( sock , ( char * ) mask_bytes , & len ) ; } else { rv = lua_websocket_readbytes ( r -> connection , ( char * ) mask_bytes , 4 ) ; } if ( rv != APR_SUCCESS ) { return 0 ; } } if ( plen < ( HUGE_STRING_LEN * 1024 ) && plen > 0 ) { apr_size_t remaining = plen ; apr_size_t received ; apr_off_t at = 0 ; char * buffer = apr_palloc ( r -> pool , plen + 1 ) ; buffer [ plen ] = 0 ; if ( plaintext ) { while ( remaining > 0 ) { received = remaining ; rv = apr_socket_recv ( sock , buffer + at , & received ) ; if ( received > 0 ) { remaining -= received ; at += received ; } } ap_log_rerror ( APLOG_MARK , APLOG_TRACE1 , 0 , r , \"Websocket:<S2SV_blank>Frame<S2SV_blank>contained<S2SV_blank>%\" APR_OFF_T_FMT \"<S2SV_blank>bytes,<S2SV_blank>pushed<S2SV_blank>to<S2SV_blank>Lua<S2SV_blank>stack\" , at ) ; } else { rv = lua_websocket_readbytes ( r -> connection , buffer , remaining ) ; ap_log_rerror ( APLOG_MARK , APLOG_TRACE1 , 0 , r , \"Websocket:<S2SV_blank>SSL<S2SV_blank>Frame<S2SV_blank>contained<S2SV_blank>%\" APR_SIZE_T_FMT \"<S2SV_blank>bytes,<S2SV_blank>\" \"pushed<S2SV_blank>to<S2SV_blank>Lua<S2SV_blank>stack\" , remaining ) ; } if ( mask ) { for ( n = 0 ; n < plen ; n ++ ) { buffer [ n ] ^= mask_bytes [ n % 4 ] ; } } lua_pushlstring ( L , buffer , ( size_t ) plen ) ; lua_pushboolean ( L , fin ) ; return 2 ; } if ( opcode == 0x09 ) { char frame [ 2 ] ; plen = 2 ; frame [ 0 ] = 0x8A ; frame [ 1 ] = 0 ; apr_socket_send ( sock , frame , & plen ) ; <S2SV_StartBug> lua_websocket_read ( L ) ; <S2SV_EndBug> } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rv ; int do_read = 1 ; int <S2SV_ModStart> -> connection ) ; while ( do_read ) { do_read = 0 <S2SV_ModStart> plen ) ; do_read = 1 ; } <S2SV_ModEnd> } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5691\n\n```\nCWE-20 static Image * ReadDCMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char explicit_vr [ MagickPathExtent ] , implicit_vr [ MagickPathExtent ] , magick [ MagickPathExtent ] , photometric [ MagickPathExtent ] ; DCMStreamInfo * stream_info ; Image * image ; int * bluemap , datum , * greenmap , * graymap , index , * redmap ; MagickBooleanType explicit_file , explicit_retry , polarity , sequence , use_explicit ; MagickOffsetType offset ; Quantum * scale ; register ssize_t i , x ; register Quantum * q ; register unsigned char * p ; size_t bits_allocated , bytes_per_pixel , colors , depth , height , length , mask , max_value , number_scenes , quantum , samples_per_pixel , signed_data , significant_bits , status , width , window_width ; ssize_t count , rescale_intercept , rescale_slope , scene , window_center , y ; unsigned char * data ; unsigned short group , element ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 8UL ; image -> endian = LSBEndian ; stream_info = ( DCMStreamInfo * ) AcquireMagickMemory ( sizeof ( * stream_info ) ) ; if ( stream_info == ( DCMStreamInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( stream_info , 0 , sizeof ( * stream_info ) ) ; count = ReadBlob ( image , 128 , ( unsigned char * ) magick ) ; if ( count != 128 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) magick ) ; if ( ( count != 4 ) || ( LocaleNCompare ( magick , \"DICM\" , 4 ) != 0 ) ) { offset = SeekBlob ( image , 0L , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickString ( photometric , \"MONOCHROME1<S2SV_blank>\" , MagickPathExtent ) ; bits_allocated = 8 ; bytes_per_pixel = 1 ; polarity = MagickFalse ; data = ( unsigned char * ) NULL ; depth = 8 ; element = 0 ; explicit_vr [ 2 ] = '\\\\0' ; explicit_file = MagickFalse ; colors = 0 ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; graymap = ( int * ) NULL ; height = 0 ; max_value = 255UL ; mask = 0xffff ; number_scenes = 1 ; rescale_intercept = 0 ; rescale_slope = 1 ; samples_per_pixel = 1 ; scale = ( Quantum * ) NULL ; sequence = MagickFalse ; signed_data = ( ~ 0UL ) ; significant_bits = 0 ; use_explicit = MagickFalse ; explicit_retry = MagickFalse ; width = 0 ; window_center = 0 ; window_width = 0 ; for ( group = 0 ; ( group != 0x7FE0 ) || ( element != 0x0010 ) || ( sequence != MagickFalse ) ; ) { image -> offset = ( ssize_t ) TellBlob ( image ) ; group = ReadBlobLSBShort ( image ) ; element = ReadBlobLSBShort ( image ) ; if ( ( group != 0x0002 ) && ( image -> endian == MSBEndian ) ) { group = ( unsigned short ) ( ( group << 8 ) | ( ( group >> 8 ) & 0xFF ) ) ; element = ( unsigned short ) ( ( element << 8 ) | ( ( element >> 8 ) & 0xFF ) ) ; } quantum = 0 ; for ( i = 0 ; dicom_info [ i ] . group < 0xffff ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) CopyMagickString ( implicit_vr , dicom_info [ i ] . vr , MagickPathExtent ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) explicit_vr ) ; if ( count != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( explicit_file == MagickFalse ) && ( group != 0x0002 ) ) explicit_file = ( isupper ( ( unsigned char ) * explicit_vr ) != MagickFalse ) && ( isupper ( ( unsigned char ) * ( explicit_vr + 1 ) ) != MagickFalse ) ? MagickTrue : MagickFalse ; use_explicit = ( ( group == 0x0002 ) && ( explicit_retry == MagickFalse ) ) || ( explicit_file != MagickFalse ) ? MagickTrue : MagickFalse ; if ( ( use_explicit != MagickFalse ) && ( strncmp ( implicit_vr , \"xs\" , 2 ) == 0 ) ) ( void ) CopyMagickString ( implicit_vr , explicit_vr , MagickPathExtent ) ; if ( ( use_explicit == MagickFalse ) || ( strncmp ( implicit_vr , \"!!\" , 2 ) == 0 ) ) { offset = SeekBlob ( image , ( MagickOffsetType ) - 2 , SEEK_CUR ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; quantum = 4 ; } else { quantum = 2 ; if ( ( strncmp ( explicit_vr , \"OB\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"UN\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"SQ\" , 2 ) == 0 ) ) { ( void ) ReadBlobLSBShort ( image ) ; quantum = 4 ; } } datum = 0 ; if ( quantum == 4 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( quantum == 2 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } quantum = 0 ; length = 1 ; if ( datum != 0 ) { if ( ( strncmp ( implicit_vr , \"SS\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"US\" , 2 ) == 0 ) ) quantum = 2 ; else if ( ( strncmp ( implicit_vr , \"UL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"FL\" , 2 ) == 0 ) ) quantum = 4 ; else if ( strncmp ( implicit_vr , \"FD\" , 2 ) != 0 ) quantum = 1 ; else quantum = 8 ; if ( datum != ~ 0 ) length = ( size_t ) datum / quantum ; else { quantum = 0 ; length = 0 ; } } if ( image_info -> verbose != MagickFalse ) { if ( use_explicit == MagickFalse ) explicit_vr [ 0 ] = '\\\\0' ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) FormatLocaleFile ( stdout , \"0x%04lX<S2SV_blank>%4ld<S2SV_blank>%s-%s<S2SV_blank>(0x%04lx,0x%04lx)\" , ( unsigned long ) image -> offset , ( long ) length , implicit_vr , explicit_vr , ( unsigned long ) group , ( unsigned long ) element ) ; if ( dicom_info [ i ] . description != ( char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"<S2SV_blank>%s\" , dicom_info [ i ] . description ) ; ( void ) FormatLocaleFile ( stdout , \":<S2SV_blank>\" ) ; } if ( ( sequence == MagickFalse ) && ( group == 0x7FE0 ) && ( element == 0x0010 ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; break ; } data = ( unsigned char * ) NULL ; if ( ( length == 1 ) && ( quantum == 1 ) ) datum = ReadBlobByte ( image ) ; else if ( ( length == 1 ) && ( quantum == 2 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } else if ( ( length == 1 ) && ( quantum == 4 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( ( quantum != 0 ) && ( length != 0 ) ) { if ( ~ length >= 1 ) data = ( unsigned char * ) AcquireQuantumMemory ( length + 1 , quantum * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) quantum * length , data ) ; if ( count != ( ssize_t ) ( quantum * length ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"count=%d<S2SV_blank>quantum=%d<S2SV_blank>\" \"length=%d<S2SV_blank>group=%d\\\\n\" , ( int ) count , ( int ) quantum , ( int ) length , ( int ) group ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } data [ length * quantum ] = '\\\\0' ; } else if ( ( unsigned int ) datum == 0xFFFFFFFFU ) { sequence = MagickTrue ; continue ; } if ( ( unsigned int ) ( ( group << 16 ) | element ) == 0xFFFEE0DD ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; sequence = MagickFalse ; continue ; } if ( sequence != MagickFalse ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; continue ; } switch ( group ) { case 0x0002 : { switch ( element ) { case 0x0010 : { char transfer_syntax [ MagickPathExtent ] ; if ( ( datum == 0 ) && ( explicit_retry == MagickFalse ) ) { explicit_retry = MagickTrue ; ( void ) SeekBlob ( image , ( MagickOffsetType ) 0 , SEEK_SET ) ; group = 0 ; element = 0 ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"Corrupted<S2SV_blank>image<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>explicit<S2SV_blank>format\\\\n\" ) ; break ; } * transfer_syntax = '\\\\0' ; if ( data != ( unsigned char * ) NULL ) ( void ) CopyMagickString ( transfer_syntax , ( char * ) data , MagickPathExtent ) ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"transfer_syntax=%s\\\\n\" , ( const char * ) transfer_syntax ) ; if ( strncmp ( transfer_syntax , \"1.2.840.10008.1.2\" , 17 ) == 0 ) { int count , subtype , type ; type = 1 ; subtype = 0 ; if ( strlen ( transfer_syntax ) > 17 ) { count = sscanf ( transfer_syntax + 17 , \".%d.%d\" , & type , & subtype ) ; if ( count < 1 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } switch ( type ) { case 1 : { image -> endian = LSBEndian ; break ; } case 2 : { image -> endian = MSBEndian ; break ; } case 4 : { if ( ( subtype >= 80 ) && ( subtype <= 81 ) ) image -> compression = JPEGCompression ; else if ( ( subtype >= 90 ) && ( subtype <= 93 ) ) image -> compression = JPEG2000Compression ; else image -> compression = JPEGCompression ; break ; } case 5 : { image -> compression = RLECompression ; break ; } } } break ; } default : break ; } break ; } case 0x0028 : { switch ( element ) { case 0x0002 : { samples_per_pixel = ( size_t ) datum ; break ; } case 0x0004 : { <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) MagickMin ( length , MagickPathExtent - 1 ) ; i ++ ) <S2SV_EndBug> photometric [ i ] = ( char ) data [ i ] ; photometric [ i ] = '\\\\0' ; polarity = LocaleCompare ( photometric , \"MONOCHROME1<S2SV_blank>\" ) == 0 ? MagickTrue : MagickFalse ; break ; } case 0x0006 : { if ( datum == 1 ) image -> interlace = PlaneInterlace ; break ; } case 0x0008 : <S2SV_StartBug> { <S2SV_EndBug> number_scenes = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x0010 : { height = ( size_t ) datum ; break ; } case 0x0011 : { width = ( size_t ) datum ; break ; } case 0x0100 : { bits_allocated = ( size_t ) datum ; bytes_per_pixel = 1 ; if ( datum > 8 ) bytes_per_pixel = 2 ; depth = bits_allocated ; if ( depth > 32 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; max_value = ( 1UL << bits_allocated ) - 1 ; break ; } case 0x0101 : { significant_bits = ( size_t ) datum ; bytes_per_pixel = 1 ; if ( significant_bits > 8 ) bytes_per_pixel = 2 ; depth = significant_bits ; if ( depth > 32 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; max_value = ( 1UL << significant_bits ) - 1 ; mask = ( size_t ) GetQuantumRange ( significant_bits ) ; break ; } case 0x0102 : { break ; } case 0x0103 : { signed_data = ( size_t ) datum ; break ; } case 0x1050 : { if ( data != ( unsigned char * ) NULL ) window_center = ( ssize_t ) StringToLong ( ( char * ) data ) ; break ; } case 0x1051 : { if ( data != ( unsigned char * ) NULL ) window_width = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x1052 : { if ( data != ( unsigned char * ) NULL ) rescale_intercept = ( ssize_t ) StringToLong ( ( char * ) data ) ; break ; } case 0x1053 : { if ( data != ( unsigned char * ) NULL ) rescale_slope = ( ssize_t ) StringToLong ( ( char * ) data ) ; break ; } case 0x1200 : case 0x3006 : { if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / bytes_per_pixel ) ; datum = ( int ) colors ; graymap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * graymap ) ) ; if ( graymap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) if ( bytes_per_pixel == 1 ) graymap [ i ] = ( int ) data [ i ] ; else graymap [ i ] = ( int ) ( ( short * ) data ) [ i ] ; break ; } case 0x1201 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; redmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * redmap ) ) ; if ( redmap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; redmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1202 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; greenmap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * greenmap ) ) ; if ( greenmap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; greenmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1203 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; bluemap = ( int * ) AcquireQuantumMemory ( ( size_t ) colors , sizeof ( * bluemap ) ) ; if ( bluemap == ( int * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; bluemap [ i ] = ( int ) index ; p += 2 ; } break ; } default : break ; } break ; } case 0x2050 : { switch ( element ) { case 0x0020 : { if ( ( data != ( unsigned char * ) NULL ) && ( strncmp ( ( char * ) data , \"INVERSE\" , 7 ) == 0 ) ) polarity = MagickTrue ; break ; } default : break ; } break ; } default : break ; } if ( data != ( unsigned char * ) NULL ) { char * attribute ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; if ( dicom_info [ i ] . description != ( char * ) NULL ) { attribute = AcquireString ( \"dcm:\" ) ; ( void ) ConcatenateString ( & attribute , dicom_info [ i ] . description ) ; for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i == ( ssize_t ) length ) || ( length > 4 ) ) { ( void ) SubstituteString ( & attribute , \"<S2SV_blank>\" , \"\" ) ; ( void ) SetImageProperty ( image , attribute , ( char * ) data , exception ) ; } attribute = DestroyString ( attribute ) ; } } if ( image_info -> verbose != MagickFalse ) { if ( data == ( unsigned char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"%d\\\\n\" , datum ) ; else { for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i != ( ssize_t ) length ) && ( length <= 4 ) ) { ssize_t j ; datum = 0 ; for ( j = ( ssize_t ) length - 1 ; j >= 0 ; j -- ) datum = ( 256 * datum + data [ j ] ) ; ( void ) FormatLocaleFile ( stdout , \"%d\" , datum ) ; } else for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( isprint ( ( int ) data [ i ] ) != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"%c\" , data [ i ] ) ; else ( void ) FormatLocaleFile ( stdout , \"%c\" , '.' ) ; ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; } } if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( ( width == 0 ) || ( height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; if ( signed_data == 0xffff ) signed_data = ( size_t ) ( significant_bits == 16 ? 1 : 0 ) ; if ( ( image -> compression == JPEGCompression ) || ( image -> compression == JPEG2000Compression ) ) { Image * images ; ImageInfo * read_info ; int c ; size_t length ; unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { MagickOffsetType offset ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; images = NewImageList ( ) ; for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { char filename [ MagickPathExtent ] ; const char * property ; FILE * file ; Image * jpeg_image ; int unique_file ; unsigned int tag ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( tag == 0xFFFEE0DD ) break ; if ( tag != 0xFFFEE000 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( file == ( FILE * ) NULL ) { ( void ) RelinquishUniqueFileResource ( filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , filename ) ; break ; } for ( ; length != 0 ; length -- ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } ( void ) fputc ( c , file ) ; } ( void ) fclose ( file ) ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"jpeg:%s\" , filename ) ; if ( image -> compression == JPEG2000Compression ) ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"j2k:%s\" , filename ) ; jpeg_image = ReadImage ( read_info , exception ) ; if ( jpeg_image != ( Image * ) NULL ) { ResetImagePropertyIterator ( image ) ; property = GetNextImageProperty ( image ) ; while ( property != ( const char * ) NULL ) { ( void ) SetImageProperty ( jpeg_image , property , GetImageProperty ( image , property , exception ) , exception ) ; property = GetNextImageProperty ( image ) ; } AppendImageToList ( & images , jpeg_image ) ; } ( void ) RelinquishUniqueFileResource ( filename ) ; } read_info = DestroyImageInfo ( read_info ) ; image = DestroyImage ( image ) ; return ( GetFirstImageInList ( images ) ) ; } if ( depth != ( 1UL * MAGICKCORE_QUANTUM_DEPTH ) ) { QuantumAny range ; size_t length ; length = ( size_t ) ( GetQuantumRange ( depth ) + 1 ) ; scale = ( Quantum * ) AcquireQuantumMemory ( length , sizeof ( * scale ) ) ; if ( scale == ( Quantum * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; range = GetQuantumRange ( depth ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) ( GetQuantumRange ( depth ) + 1 ) ; i ++ ) <S2SV_EndBug> scale [ i ] = ScaleAnyToQuantum ( ( size_t ) i , range ) ; } if ( image -> compression == RLECompression ) { size_t length ; unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { MagickOffsetType offset ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } } for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { if ( image_info -> ping != MagickFalse ) break ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; image -> depth = depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; image -> colorspace = RGBColorspace ; if ( ( image -> colormap == ( PixelInfo * ) NULL ) && ( samples_per_pixel == 1 ) ) { size_t one ; one = 1 ; if ( colors == 0 ) colors = one << depth ; if ( AcquireImageColormap ( image , one << depth , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( redmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = redmap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; } if ( greenmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = greenmap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . green = ( MagickRealType ) index ; } if ( bluemap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = bluemap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } if ( graymap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = graymap [ i ] ; if ( ( scale != ( Quantum * ) NULL ) && ( index <= ( int ) max_value ) ) index = ( int ) scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; image -> colormap [ i ] . green = ( MagickRealType ) index ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) ( void ) ReadBlobByte ( image ) ; tag = ( ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; stream_info -> remaining = ( size_t ) ReadBlobLSBLong ( image ) ; if ( ( tag != 0xFFFEE000 ) || ( stream_info -> remaining <= 64 ) || ( EOFBlob ( image ) != MagickFalse ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; stream_info -> count = 0 ; stream_info -> segment_count = ReadBlobLSBLong ( image ) ; if ( stream_info -> segment_count > 1 ) { bytes_per_pixel = 1 ; depth = 8 ; } for ( i = 0 ; i < 15 ; i ++ ) stream_info -> segments [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; stream_info -> remaining -= 64 ; } if ( ( samples_per_pixel > 1 ) && ( image -> interlace == PlaneInterlace ) ) { for ( i = 0 ; i < ( ssize_t ) samples_per_pixel ; i ++ ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( ( int ) i ) { case 0 : { SetPixelRed ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 1 : { SetPixelGreen ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 2 : { SetPixelBlue ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 3 : { SetPixelAlpha ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } } else { const char * option ; int byte ; PixelPacket pixel ; byte = 0 ; i = 0 ; if ( ( window_center != 0 ) && ( window_width == 0 ) ) window_width = ( size_t ) window_center ; option = GetImageOption ( image_info , \"dcm:display-range\" ) ; if ( option != ( const char * ) NULL ) { if ( LocaleCompare ( option , \"reset\" ) == 0 ) window_width = 0 ; } ( void ) ResetMagickMemory ( & pixel , 0 , sizeof ( pixel ) ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( samples_per_pixel == 1 ) { int pixel_value ; if ( bytes_per_pixel == 1 ) pixel_value = polarity != MagickFalse ? ( ( int ) max_value - ReadDCMByte ( stream_info , image ) ) : ReadDCMByte ( stream_info , image ) ; else if ( ( bits_allocated != 12 ) || ( significant_bits != 12 ) ) { if ( signed_data ) pixel_value = ReadDCMSignedShort ( stream_info , image ) ; else pixel_value = ReadDCMShort ( stream_info , image ) ; if ( polarity != MagickFalse ) pixel_value = ( int ) max_value - pixel_value ; } else { if ( ( i & 0x01 ) != 0 ) pixel_value = ( ReadDCMByte ( stream_info , image ) << 8 ) | byte ; else { pixel_value = ReadDCMSignedShort ( stream_info , image ) ; byte = ( int ) ( pixel_value & 0x0f ) ; pixel_value >>= 4 ; } i ++ ; } index = ( pixel_value * rescale_slope ) + rescale_intercept ; if ( window_width == 0 ) { if ( signed_data == 1 ) index -= 32767 ; } else { ssize_t window_max , window_min ; window_min = ( ssize_t ) ceil ( ( double ) window_center - ( window_width - 1.0 ) / 2.0 - 0.5 ) ; window_max = ( ssize_t ) floor ( ( double ) window_center + ( window_width - 1.0 ) / 2.0 + 0.5 ) ; if ( ( ssize_t ) index <= window_min ) index = 0 ; else if ( ( ssize_t ) index > window_max ) index = ( int ) max_value ; else index = ( int ) ( max_value * ( ( ( index - window_center - 0.5 ) / ( window_width - 1 ) ) + 0.5 ) ) ; } index &= mask ; index = ( int ) ConstrainColormapIndex ( image , ( size_t ) index , exception ) ; SetPixelIndex ( image , ( Quantum ) index , q ) ; pixel . red = ( unsigned int ) image -> colormap [ index ] . red ; pixel . green = ( unsigned int ) image -> colormap [ index ] . green ; pixel . blue = ( unsigned int ) image -> colormap [ index ] . blue ; } else { if ( bytes_per_pixel == 1 ) { pixel . red = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . green = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . blue = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; } else { pixel . red = ReadDCMShort ( stream_info , image ) ; pixel . green = ReadDCMShort ( stream_info , image ) ; pixel . blue = ReadDCMShort ( stream_info , image ) ; } pixel . red &= mask ; pixel . green &= mask ; pixel . blue &= mask ; if ( scale != ( Quantum * ) NULL ) { <S2SV_StartBug> pixel . red = scale [ pixel . red ] ; <S2SV_EndBug> <S2SV_StartBug> pixel . green = scale [ pixel . green ] ; <S2SV_EndBug> <S2SV_StartBug> pixel . blue = scale [ pixel . blue ] ; <S2SV_EndBug> } } SetPixelRed ( image , ( Quantum ) pixel . red , q ) ; SetPixelGreen ( image , ( Quantum ) pixel . green , q ) ; SetPixelBlue ( image , ( Quantum ) pixel . blue , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> segment_count > 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( samples_per_pixel == 1 ) { int pixel_value ; if ( bytes_per_pixel == 1 ) pixel_value = polarity != MagickFalse ? ( ( int ) max_value - ReadDCMByte ( stream_info , image ) ) : ReadDCMByte ( stream_info , image ) ; else if ( ( bits_allocated != 12 ) || ( significant_bits != 12 ) ) { pixel_value = ( int ) ( polarity != MagickFalse ? ( max_value - ReadDCMShort ( stream_info , image ) ) : ReadDCMShort ( stream_info , image ) ) ; if ( signed_data == 1 ) pixel_value = ( ( signed short ) pixel_value ) ; } else { if ( ( i & 0x01 ) != 0 ) pixel_value = ( ReadDCMByte ( stream_info , image ) << 8 ) | byte ; else { pixel_value = ReadDCMShort ( stream_info , image ) ; byte = ( int ) ( pixel_value & 0x0f ) ; pixel_value >>= 4 ; } i ++ ; } index = ( pixel_value * rescale_slope ) + rescale_intercept ; if ( window_width == 0 ) { if ( signed_data == 1 ) index -= 32767 ; } else { ssize_t window_max , window_min ; window_min = ( ssize_t ) ceil ( ( double ) window_center - ( window_width - 1.0 ) / 2.0 - 0.5 ) ; window_max = ( ssize_t ) floor ( ( double ) window_center + ( window_width - 1.0 ) / 2.0 + 0.5 ) ; if ( ( ssize_t ) index <= window_min ) index = 0 ; else if ( ( ssize_t ) index > window_max ) index = ( int ) max_value ; else index = ( int ) ( max_value * ( ( ( index - window_center - 0.5 ) / ( window_width - 1 ) ) + 0.5 ) ) ; } index &= mask ; index = ( int ) ConstrainColormapIndex ( image , ( size_t ) index , exception ) ; SetPixelIndex ( image , ( Quantum ) ( ( ( size_t ) GetPixelIndex ( image , q ) ) | ( ( ( size_t ) index ) << 8 ) ) , q ) ; pixel . red = ( unsigned int ) image -> colormap [ index ] . red ; pixel . green = ( unsigned int ) image -> colormap [ index ] . green ; pixel . blue = ( unsigned int ) image -> colormap [ index ] . blue ; } else { if ( bytes_per_pixel == 1 ) { pixel . red = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . green = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; pixel . blue = ( unsigned int ) ReadDCMByte ( stream_info , image ) ; } else { pixel . red = ReadDCMShort ( stream_info , image ) ; pixel . green = ReadDCMShort ( stream_info , image ) ; pixel . blue = ReadDCMShort ( stream_info , image ) ; } pixel . red &= mask ; pixel . green &= mask ; pixel . blue &= mask ; if ( scale != ( Quantum * ) NULL ) { pixel . red = scale [ pixel . red ] ; pixel . green = scale [ pixel . green ] ; pixel . blue = scale [ pixel . blue ] ; } } SetPixelRed ( image , ( Quantum ) ( ( ( size_t ) GetPixelRed ( image , q ) ) | ( ( ( size_t ) pixel . red ) << 8 ) ) , q ) ; SetPixelGreen ( image , ( Quantum ) ( ( ( size_t ) GetPixelGreen ( image , q ) ) | ( ( ( size_t ) pixel . green ) << 8 ) ) , q ) ; SetPixelBlue ( image , ( Quantum ) ( ( ( size_t ) GetPixelBlue ( image , q ) ) | ( ( ( size_t ) pixel . blue ) << 8 ) ) , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( SetImageGray ( image , exception ) != MagickFalse ) ( void ) SetImageColorspace ( image , GRAYColorspace , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( number_scenes - 1 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( scale != ( Quantum * ) NULL ) scale = ( Quantum * ) RelinquishMagickMemory ( scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0x0004 : { if ( data == ( unsigned char * ) NULL ) break ; <S2SV_ModStart> 0x0008 : { if ( data == ( unsigned char * ) NULL ) break ; <S2SV_ModStart> 0 ; i <= <S2SV_ModEnd> ( ssize_t ) <S2SV_ModStart> ( ssize_t ) <S2SV_ModEnd> GetQuantumRange ( depth <S2SV_ModStart> GetQuantumRange ( depth <S2SV_ModEnd> ) ; i <S2SV_ModStart> NULL ) { if ( pixel . red <= GetQuantumRange ( depth ) ) <S2SV_ModStart> red ] ; if ( pixel . green <= GetQuantumRange ( depth ) ) <S2SV_ModStart> green ] ; if ( pixel . blue <= GetQuantumRange ( depth ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 void btsnoop_net_write ( const void * data , size_t length ) { # if ( ! defined ( BT_NET_DEBUG ) || ( BT_NET_DEBUG != TRUE ) ) return ; # endif pthread_mutex_lock ( & client_socket_lock_ ) ; if ( client_socket_ != - 1 ) { <S2SV_StartBug> if ( send ( client_socket_ , data , length , 0 ) == - 1 && errno == ECONNRESET ) { <S2SV_EndBug> safe_close_ ( & client_socket_ ) ; } } pthread_mutex_unlock ( & client_socket_lock_ ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> length , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static int propagate_one ( struct mount * m ) { struct mount * child ; int type ; if ( IS_MNT_NEW ( m ) ) return 0 ; if ( ! is_subdir ( mp -> m_dentry , m -> mnt . mnt_root ) ) return 0 ; if ( peers ( m , last_dest ) ) { type = CL_MAKE_SHARED ; } else { struct mount * n , * p ; bool done ; for ( n = m ; ; n = p ) { p = n -> mnt_master ; if ( p == dest_master || IS_MNT_MARKED ( p ) ) break ; } do { struct mount * parent = last_source -> mnt_parent ; if ( last_source == first_source ) break ; done = parent -> mnt_master == p ; if ( done && peers ( n , parent ) ) break ; last_source = last_source -> mnt_master ; } while ( ! done ) ; type = CL_SLAVE ; if ( IS_MNT_SHARED ( m ) ) type |= CL_MAKE_SHARED ; } if ( m -> mnt_ns -> user_ns != user_ns ) type |= CL_UNPRIVILEGED ; child = copy_tree ( last_source , last_source -> mnt . mnt_root , type ) ; if ( IS_ERR ( child ) ) return PTR_ERR ( child ) ; child -> mnt . mnt_flags &= ~ MNT_LOCKED ; mnt_set_mountpoint ( m , mp , child ) ; last_dest = m ; last_source = child ; if ( m -> mnt_master != dest_master ) { read_seqlock_excl ( & mount_lock ) ; SET_MNT_MARK ( m -> mnt_master ) ; read_sequnlock_excl ( & mount_lock ) ; } hlist_add_head ( & child -> mnt_hash , list ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return count_mounts ( m -> mnt_ns , child ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0044\n\n```\nCWE-190 int drm_mode_dirtyfb_ioctl ( struct drm_device * dev , void * data , struct drm_file * file_priv ) { struct drm_clip_rect __user * clips_ptr ; struct drm_clip_rect * clips = NULL ; struct drm_mode_fb_dirty_cmd * r = data ; struct drm_mode_object * obj ; struct drm_framebuffer * fb ; unsigned flags ; int num_clips ; int ret = 0 ; if ( ! drm_core_check_feature ( dev , DRIVER_MODESET ) ) return - EINVAL ; mutex_lock ( & dev -> mode_config . mutex ) ; obj = drm_mode_object_find ( dev , r -> fb_id , DRM_MODE_OBJECT_FB ) ; if ( ! obj ) { DRM_ERROR ( \"invalid<S2SV_blank>framebuffer<S2SV_blank>id\\\\n\" ) ; ret = - EINVAL ; goto out_err1 ; } fb = obj_to_fb ( obj ) ; num_clips = r -> num_clips ; clips_ptr = ( struct drm_clip_rect * ) ( unsigned long ) r -> clips_ptr ; if ( ! num_clips != ! clips_ptr ) { ret = - EINVAL ; goto out_err1 ; } flags = DRM_MODE_FB_DIRTY_FLAGS & r -> flags ; if ( flags & DRM_MODE_FB_DIRTY_ANNOTATE_COPY && ( num_clips % 2 ) ) { ret = - EINVAL ; goto out_err1 ; } if ( num_clips && clips_ptr ) { <S2SV_StartBug> clips = kzalloc ( num_clips * sizeof ( * clips ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! clips ) { ret = - ENOMEM ; goto out_err1 ; } ret = copy_from_user ( clips , clips_ptr , num_clips * sizeof ( * clips ) ) ; if ( ret ) { ret = - EFAULT ; goto out_err2 ; } } if ( fb -> funcs -> dirty ) { ret = fb -> funcs -> dirty ( fb , file_priv , flags , r -> color , clips , num_clips ) ; } else { ret = - ENOSYS ; goto out_err2 ; } out_err2 : kfree ( clips ) ; out_err1 : mutex_unlock ( & dev -> mode_config . mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> clips_ptr ) { if ( num_clips < 0 || num_clips > DRM_MODE_FB_DIRTY_MAX_CLIPS ) { ret = - EINVAL ; goto out_err1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2647\n\n```\nCWE-476 static int asymmetric_key_match_preparse ( struct key_match_data * match_data ) { match_data -> lookup_type = KEYRING_SEARCH_LOOKUP_ITERATE ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = KEYRING_SEARCH_LOOKUP_ITERATE ; match_data -> cmp = asymmetric_key_cmp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8863\n\n```\nCWE-119 static void tokenadd ( struct jv_parser * p , char c ) { assert ( p -> tokenpos <= p -> tokenlen ) ; <S2SV_StartBug> if ( p -> tokenpos == p -> tokenlen ) { <S2SV_EndBug> p -> tokenlen = p -> tokenlen * 2 + 256 ; p -> tokenbuf = jv_mem_realloc ( p -> tokenbuf , p -> tokenlen ) ; } assert ( p -> tokenpos < p -> tokenlen ) ; p -> tokenbuf [ p -> tokenpos ++ ] = c ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p -> tokenpos >= ( <S2SV_ModEnd> p -> tokenlen <S2SV_ModStart> p -> tokenlen - 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 static int DecodeNumberField ( int len , char * str , int fmask , int * tmask , struct tm * tm , fsec_t * fsec , int * is2digits ) { char * cp ; if ( ( cp = strchr ( str , '.' ) ) != NULL ) { # ifdef HAVE_INT64_TIMESTAMP <S2SV_StartBug> char fstr [ MAXDATELEN + 1 ] ; <S2SV_EndBug> strcpy ( fstr , ( cp + 1 ) ) ; strcpy ( fstr + strlen ( fstr ) , \"000000\" ) ; * ( fstr + 6 ) = '\\\\0' ; * fsec = strtol ( fstr , NULL , 10 ) ; # else * fsec = strtod ( cp , NULL ) ; # endif * cp = '\\\\0' ; len = strlen ( str ) ; } else if ( ( fmask & DTK_DATE_M ) != DTK_DATE_M ) { if ( len == 8 ) { * tmask = DTK_DATE_M ; tm -> tm_mday = atoi ( str + 6 ) ; * ( str + 6 ) = '\\\\0' ; tm -> tm_mon = atoi ( str + 4 ) ; * ( str + 4 ) = '\\\\0' ; tm -> tm_year = atoi ( str + 0 ) ; return DTK_DATE ; } else if ( len == 6 ) { * tmask = DTK_DATE_M ; tm -> tm_mday = atoi ( str + 4 ) ; * ( str + 4 ) = '\\\\0' ; tm -> tm_mon = atoi ( str + 2 ) ; * ( str + 2 ) = '\\\\0' ; tm -> tm_year = atoi ( str + 0 ) ; * is2digits = TRUE ; return DTK_DATE ; } else if ( len == 5 ) { * tmask = DTK_DATE_M ; tm -> tm_mday = atoi ( str + 2 ) ; * ( str + 2 ) = '\\\\0' ; tm -> tm_mon = 1 ; tm -> tm_year = atoi ( str + 0 ) ; * is2digits = TRUE ; return DTK_DATE ; } } if ( ( fmask & DTK_TIME_M ) != DTK_TIME_M ) { if ( len == 6 ) { * tmask = DTK_TIME_M ; tm -> tm_sec = atoi ( str + 4 ) ; * ( str + 4 ) = '\\\\0' ; tm -> tm_min = atoi ( str + 2 ) ; * ( str + 2 ) = '\\\\0' ; tm -> tm_hour = atoi ( str + 0 ) ; return DTK_TIME ; } else if ( len == 4 ) { * tmask = DTK_TIME_M ; tm -> tm_sec = 0 ; tm -> tm_min = atoi ( str + 2 ) ; * ( str + 2 ) = '\\\\0' ; tm -> tm_hour = atoi ( str + 0 ) ; return DTK_TIME ; } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char fstr [ 7 ] ; int i ; cp ++ ; for ( i = 0 ; i < 6 ; i ++ ) fstr [ i ] = * cp != '\\\\0' ? * cp ++ : '0' ; fstr [ i ] <S2SV_ModEnd> = '\\\\0' ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-24994\n\n```\nCWE-787 char * parse_tags ( ASS_Renderer * render_priv , char * p , char * end , double pwr ) { for ( char * q ; p < end ; p = q ) { while ( * p != '\\\\\\\\' && p != end ) ++ p ; if ( * p != '\\\\\\\\' ) break ; ++ p ; if ( p != end ) skip_spaces ( & p ) ; q = p ; while ( * q != '(' && * q != '\\\\\\\\' && q != end ) ++ q ; if ( q == p ) continue ; char * name_end = q ; struct arg args [ MAX_VALID_NARGS + 1 ] ; int nargs = 0 ; for ( int i = 0 ; i <= MAX_VALID_NARGS ; ++ i ) args [ i ] . start = args [ i ] . end = \"\" ; if ( * q == '(' ) { ++ q ; while ( 1 ) { if ( q != end ) skip_spaces ( & q ) ; char * r = q ; while ( * r != ',' && * r != '\\\\\\\\' && * r != ')' && r != end ) ++ r ; if ( * r == ',' ) { push_arg ( args , & nargs , q , r ) ; q = r + 1 ; } else { while ( * r != ')' && r != end ) ++ r ; push_arg ( args , & nargs , q , r ) ; q = r ; if ( q != end ) ++ q ; break ; } } } # define tag ( name ) ( mystrcmp ( & p , ( name ) ) && ( push_arg ( args , & nargs , p , name_end ) , 1 ) ) # define complex_tag ( name ) mystrcmp ( & p , ( name ) ) if ( tag ( \"xbord\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; val = render_priv -> state . border_x * ( 1 - pwr ) + val * pwr ; val = ( val < 0 ) ? 0 : val ; } else val = render_priv -> state . style -> Outline ; render_priv -> state . border_x = val ; } else if ( tag ( \"ybord\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; val = render_priv -> state . border_y * ( 1 - pwr ) + val * pwr ; val = ( val < 0 ) ? 0 : val ; } else val = render_priv -> state . style -> Outline ; render_priv -> state . border_y = val ; } else if ( tag ( \"xshad\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; val = render_priv -> state . shadow_x * ( 1 - pwr ) + val * pwr ; } else val = render_priv -> state . style -> Shadow ; render_priv -> state . shadow_x = val ; } else if ( tag ( \"yshad\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; val = render_priv -> state . shadow_y * ( 1 - pwr ) + val * pwr ; } else val = render_priv -> state . style -> Shadow ; render_priv -> state . shadow_y = val ; } else if ( tag ( \"fax\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; render_priv -> state . fax = val * pwr + render_priv -> state . fax * ( 1 - pwr ) ; } else render_priv -> state . fax = 0. ; } else if ( tag ( \"fay\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; render_priv -> state . fay = val * pwr + render_priv -> state . fay * ( 1 - pwr ) ; } else render_priv -> state . fay = 0. ; } else if ( complex_tag ( \"iclip\" ) ) { if ( nargs == 4 ) { int x0 , y0 , x1 , y1 ; x0 = argtoi ( args [ 0 ] ) ; y0 = argtoi ( args [ 1 ] ) ; x1 = argtoi ( args [ 2 ] ) ; y1 = argtoi ( args [ 3 ] ) ; render_priv -> state . clip_x0 = render_priv -> state . clip_x0 * ( 1 - pwr ) + x0 * pwr ; render_priv -> state . clip_x1 = render_priv -> state . clip_x1 * ( 1 - pwr ) + x1 * pwr ; render_priv -> state . clip_y0 = render_priv -> state . clip_y0 * ( 1 - pwr ) + y0 * pwr ; render_priv -> state . clip_y1 = render_priv -> state . clip_y1 * ( 1 - pwr ) + y1 * pwr ; render_priv -> state . clip_mode = 1 ; } else if ( ! render_priv -> state . clip_drawing ) { if ( parse_vector_clip ( render_priv , args , nargs ) ) render_priv -> state . clip_drawing_mode = 1 ; } } else if ( tag ( \"blur\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; val = render_priv -> state . blur * ( 1 - pwr ) + val * pwr ; val = ( val < 0 ) ? 0 : val ; val = ( val > BLUR_MAX_RADIUS ) ? BLUR_MAX_RADIUS : val ; render_priv -> state . blur = val ; } else render_priv -> state . blur = 0.0 ; } else if ( tag ( \"fscx\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) / 100 ; val = render_priv -> state . scale_x * ( 1 - pwr ) + val * pwr ; val = ( val < 0 ) ? 0 : val ; } else val = render_priv -> state . style -> ScaleX ; render_priv -> state . scale_x = val ; } else if ( tag ( \"fscy\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) / 100 ; val = render_priv -> state . scale_y * ( 1 - pwr ) + val * pwr ; val = ( val < 0 ) ? 0 : val ; } else val = render_priv -> state . style -> ScaleY ; render_priv -> state . scale_y = val ; } else if ( tag ( \"fsc\" ) ) { render_priv -> state . scale_x = render_priv -> state . style -> ScaleX ; render_priv -> state . scale_y = render_priv -> state . style -> ScaleY ; } else if ( tag ( \"fsp\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; render_priv -> state . hspacing = render_priv -> state . hspacing * ( 1 - pwr ) + val * pwr ; } else render_priv -> state . hspacing = render_priv -> state . style -> Spacing ; } else if ( tag ( \"fs\" ) ) { double val = 0 ; if ( nargs ) { val = argtod ( * args ) ; if ( * args -> start == '+' || * args -> start == '-' ) val = render_priv -> state . font_size * ( 1 + pwr * val / 10 ) ; else val = render_priv -> state . font_size * ( 1 - pwr ) + val * pwr ; } if ( val <= 0 ) val = render_priv -> state . style -> FontSize ; if ( render_priv -> state . font ) change_font_size ( render_priv , val ) ; } else if ( tag ( \"bord\" ) ) { double val , xval , yval ; if ( nargs ) { val = argtod ( * args ) ; xval = render_priv -> state . border_x * ( 1 - pwr ) + val * pwr ; yval = render_priv -> state . border_y * ( 1 - pwr ) + val * pwr ; xval = ( xval < 0 ) ? 0 : xval ; yval = ( yval < 0 ) ? 0 : yval ; } else xval = yval = render_priv -> state . style -> Outline ; render_priv -> state . border_x = xval ; render_priv -> state . border_y = yval ; } else if ( complex_tag ( \"move\" ) ) { double x1 , x2 , y1 , y2 ; long long t1 , t2 , delta_t , t ; double x , y ; double k ; if ( nargs == 4 || nargs == 6 ) { x1 = argtod ( args [ 0 ] ) ; y1 = argtod ( args [ 1 ] ) ; x2 = argtod ( args [ 2 ] ) ; y2 = argtod ( args [ 3 ] ) ; t1 = t2 = 0 ; if ( nargs == 6 ) { t1 = argtoll ( args [ 4 ] ) ; t2 = argtoll ( args [ 5 ] ) ; if ( t1 > t2 ) { long long tmp = t2 ; t2 = t1 ; t1 = tmp ; } } } else continue ; if ( t1 <= 0 && t2 <= 0 ) { t1 = 0 ; t2 = render_priv -> state . event -> Duration ; } delta_t = t2 - t1 ; t = render_priv -> time - render_priv -> state . event -> Start ; if ( t <= t1 ) k = 0. ; else if ( t >= t2 ) k = 1. ; else k = ( ( double ) ( t - t1 ) ) / delta_t ; x = k * ( x2 - x1 ) + x1 ; y = k * ( y2 - y1 ) + y1 ; if ( render_priv -> state . evt_type != EVENT_POSITIONED ) { render_priv -> state . pos_x = x ; render_priv -> state . pos_y = y ; render_priv -> state . detect_collisions = 0 ; render_priv -> state . evt_type = EVENT_POSITIONED ; } } else if ( tag ( \"frx\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; val *= M_PI / 180 ; render_priv -> state . frx = val * pwr + render_priv -> state . frx * ( 1 - pwr ) ; } else render_priv -> state . frx = 0. ; } else if ( tag ( \"fry\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; val *= M_PI / 180 ; render_priv -> state . fry = val * pwr + render_priv -> state . fry * ( 1 - pwr ) ; } else render_priv -> state . fry = 0. ; } else if ( tag ( \"frz\" ) || tag ( \"fr\" ) ) { double val ; if ( nargs ) { val = argtod ( * args ) ; val *= M_PI / 180 ; render_priv -> state . frz = val * pwr + render_priv -> state . frz * ( 1 - pwr ) ; } else render_priv -> state . frz = M_PI * render_priv -> state . style -> Angle / 180. ; } else if ( tag ( \"fn\" ) ) { char * family ; char * start = args -> start ; if ( nargs && strncmp ( start , \"0\" , args -> end - start ) ) { skip_spaces ( & start ) ; family = strndup ( start , args -> end - start ) ; } else family = strdup ( render_priv -> state . style -> FontName ) ; free ( render_priv -> state . family ) ; render_priv -> state . family = family ; update_font ( render_priv ) ; } else if ( tag ( \"alpha\" ) ) { int i ; if ( nargs ) { int32_t a = parse_alpha_tag ( args -> start ) ; for ( i = 0 ; i < 4 ; ++ i ) change_alpha ( & render_priv -> state . c [ i ] , a , pwr ) ; } else { change_alpha ( & render_priv -> state . c [ 0 ] , _a ( render_priv -> state . style -> PrimaryColour ) , 1 ) ; change_alpha ( & render_priv -> state . c [ 1 ] , _a ( render_priv -> state . style -> SecondaryColour ) , 1 ) ; change_alpha ( & render_priv -> state . c [ 2 ] , _a ( render_priv -> state . style -> OutlineColour ) , 1 ) ; change_alpha ( & render_priv -> state . c [ 3 ] , _a ( render_priv -> state . style -> BackColour ) , 1 ) ; } } else if ( tag ( \"an\" ) ) { int val = argtoi ( * args ) ; if ( ( render_priv -> state . parsed_tags & PARSED_A ) == 0 ) { if ( val >= 1 && val <= 9 ) render_priv -> state . alignment = numpad2align ( val ) ; else render_priv -> state . alignment = render_priv -> state . style -> Alignment ; render_priv -> state . parsed_tags |= PARSED_A ; } } else if ( tag ( \"a\" ) ) { int val = argtoi ( * args ) ; if ( ( render_priv -> state . parsed_tags & PARSED_A ) == 0 ) { if ( val >= 1 && val <= 11 ) render_priv -> state . alignment = ( ( val & 3 ) == 0 ) ? 5 : val ; else render_priv -> state . alignment = render_priv -> state . style -> Alignment ; render_priv -> state . parsed_tags |= PARSED_A ; } } else if ( complex_tag ( \"pos\" ) ) { double v1 , v2 ; if ( nargs == 2 ) { v1 = argtod ( args [ 0 ] ) ; v2 = argtod ( args [ 1 ] ) ; } else continue ; if ( render_priv -> state . evt_type == EVENT_POSITIONED ) { ass_msg ( render_priv -> library , MSGL_V , \"Subtitle<S2SV_blank>has<S2SV_blank>a<S2SV_blank>new<S2SV_blank>\\\\\\\\pos<S2SV_blank>\" \"after<S2SV_blank>\\\\\\\\move<S2SV_blank>or<S2SV_blank>\\\\\\\\pos,<S2SV_blank>ignoring\" ) ; } else { render_priv -> state . evt_type = EVENT_POSITIONED ; render_priv -> state . detect_collisions = 0 ; render_priv -> state . pos_x = v1 ; render_priv -> state . pos_y = v2 ; } } else if ( complex_tag ( \"fade\" ) || complex_tag ( \"fad\" ) ) { int a1 , a2 , a3 ; long long t1 , t2 , t3 , t4 ; if ( nargs == 2 ) { a1 = 0xFF ; a2 = 0 ; a3 = 0xFF ; t1 = - 1 ; t2 = argtoll ( args [ 0 ] ) ; t3 = argtoll ( args [ 1 ] ) ; t4 = - 1 ; } else if ( nargs == 7 ) { a1 = argtoi ( args [ 0 ] ) ; a2 = argtoi ( args [ 1 ] ) ; a3 = argtoi ( args [ 2 ] ) ; t1 = argtoll ( args [ 3 ] ) ; t2 = argtoll ( args [ 4 ] ) ; t3 = argtoll ( args [ 5 ] ) ; t4 = argtoll ( args [ 6 ] ) ; } else continue ; if ( t1 == - 1 && t4 == - 1 ) { t1 = 0 ; t4 = render_priv -> state . event -> Duration ; t3 = t4 - t3 ; } if ( ( render_priv -> state . parsed_tags & PARSED_FADE ) == 0 ) { render_priv -> state . fade = interpolate_alpha ( render_priv -> time - render_priv -> state . event -> Start , t1 , t2 , t3 , t4 , a1 , a2 , a3 ) ; render_priv -> state . parsed_tags |= PARSED_FADE ; } } else if ( complex_tag ( \"org\" ) ) { double v1 , v2 ; if ( nargs == 2 ) { v1 = argtod ( args [ 0 ] ) ; v2 = argtod ( args [ 1 ] ) ; } else continue ; if ( ! render_priv -> state . have_origin ) { render_priv -> state . org_x = v1 ; render_priv -> state . org_y = v2 ; render_priv -> state . have_origin = 1 ; render_priv -> state . detect_collisions = 0 ; } } else if ( complex_tag ( \"t\" ) ) { double accel ; int cnt = nargs - 1 ; long long t1 , t2 , t , delta_t ; double k ; if ( cnt == 3 ) { t1 = argtoll ( args [ 0 ] ) ; t2 = argtoll ( args [ 1 ] ) ; accel = argtod ( args [ 2 ] ) ; } else if ( cnt == 2 ) { t1 = argtoll ( args [ 0 ] ) ; t2 = argtoll ( args [ 1 ] ) ; accel = 1. ; } else if ( cnt == 1 ) { t1 = 0 ; t2 = 0 ; accel = argtod ( args [ 0 ] ) ; } else if ( cnt == 0 ) { t1 = 0 ; t2 = 0 ; accel = 1. ; } else continue ; render_priv -> state . detect_collisions = 0 ; if ( t2 == 0 ) t2 = render_priv -> state . event -> Duration ; delta_t = t2 - t1 ; t = render_priv -> time - render_priv -> state . event -> Start ; if ( t <= t1 ) k = 0. ; else if ( t >= t2 ) k = 1. ; else { assert ( delta_t != 0. ) ; k = pow ( ( ( double ) ( t - t1 ) ) / delta_t , accel ) ; } p = args [ cnt ] . start ; <S2SV_StartBug> p = parse_tags ( render_priv , p , args [ cnt ] . end , k ) ; <S2SV_EndBug> } else if ( complex_tag ( \"clip\" ) ) { if ( nargs == 4 ) { int x0 , y0 , x1 , y1 ; x0 = argtoi ( args [ 0 ] ) ; y0 = argtoi ( args [ 1 ] ) ; x1 = argtoi ( args [ 2 ] ) ; y1 = argtoi ( args [ 3 ] ) ; render_priv -> state . clip_x0 = render_priv -> state . clip_x0 * ( 1 - pwr ) + x0 * pwr ; render_priv -> state . clip_x1 = render_priv -> state . clip_x1 * ( 1 - pwr ) + x1 * pwr ; render_priv -> state . clip_y0 = render_priv -> state . clip_y0 * ( 1 - pwr ) + y0 * pwr ; render_priv -> state . clip_y1 = render_priv -> state . clip_y1 * ( 1 - pwr ) + y1 * pwr ; render_priv -> state . clip_mode = 0 ; } else if ( ! render_priv -> state . clip_drawing ) { if ( parse_vector_clip ( render_priv , args , nargs ) ) render_priv -> state . clip_drawing_mode = 0 ; } } else if ( tag ( \"c\" ) || tag ( \"1c\" ) ) { if ( nargs ) { uint32_t val = parse_color_tag ( args -> start ) ; change_color ( & render_priv -> state . c [ 0 ] , val , pwr ) ; } else change_color ( & render_priv -> state . c [ 0 ] , render_priv -> state . style -> PrimaryColour , 1 ) ; } else if ( tag ( \"2c\" ) ) { if ( nargs ) { uint32_t val = parse_color_tag ( args -> start ) ; change_color ( & render_priv -> state . c [ 1 ] , val , pwr ) ; } else change_color ( & render_priv -> state . c [ 1 ] , render_priv -> state . style -> SecondaryColour , 1 ) ; } else if ( tag ( \"3c\" ) ) { if ( nargs ) { uint32_t val = parse_color_tag ( args -> start ) ; change_color ( & render_priv -> state . c [ 2 ] , val , pwr ) ; } else change_color ( & render_priv -> state . c [ 2 ] , render_priv -> state . style -> OutlineColour , 1 ) ; } else if ( tag ( \"4c\" ) ) { if ( nargs ) { uint32_t val = parse_color_tag ( args -> start ) ; change_color ( & render_priv -> state . c [ 3 ] , val , pwr ) ; } else change_color ( & render_priv -> state . c [ 3 ] , render_priv -> state . style -> BackColour , 1 ) ; } else if ( tag ( \"1a\" ) ) { if ( nargs ) { uint32_t val = parse_alpha_tag ( args -> start ) ; change_alpha ( & render_priv -> state . c [ 0 ] , val , pwr ) ; } else change_alpha ( & render_priv -> state . c [ 0 ] , _a ( render_priv -> state . style -> PrimaryColour ) , 1 ) ; } else if ( tag ( \"2a\" ) ) { if ( nargs ) { uint32_t val = parse_alpha_tag ( args -> start ) ; change_alpha ( & render_priv -> state . c [ 1 ] , val , pwr ) ; } else change_alpha ( & render_priv -> state . c [ 1 ] , _a ( render_priv -> state . style -> SecondaryColour ) , 1 ) ; } else if ( tag ( \"3a\" ) ) { if ( nargs ) { uint32_t val = parse_alpha_tag ( args -> start ) ; change_alpha ( & render_priv -> state . c [ 2 ] , val , pwr ) ; } else change_alpha ( & render_priv -> state . c [ 2 ] , _a ( render_priv -> state . style -> OutlineColour ) , 1 ) ; } else if ( tag ( \"4a\" ) ) { if ( nargs ) { uint32_t val = parse_alpha_tag ( args -> start ) ; change_alpha ( & render_priv -> state . c [ 3 ] , val , pwr ) ; } else change_alpha ( & render_priv -> state . c [ 3 ] , _a ( render_priv -> state . style -> BackColour ) , 1 ) ; } else if ( tag ( \"r\" ) ) { if ( nargs ) { int len = args -> end - args -> start ; reset_render_context ( render_priv , lookup_style_strict ( render_priv -> track , args -> start , len ) ) ; } else reset_render_context ( render_priv , NULL ) ; } else if ( tag ( \"be\" ) ) { double dval ; if ( nargs ) { int val ; dval = argtod ( * args ) ; val = ( int ) ( render_priv -> state . be * ( 1 - pwr ) + dval * pwr + 0.5 ) ; val = ( val < 0 ) ? 0 : val ; val = ( val > MAX_BE ) ? MAX_BE : val ; render_priv -> state . be = val ; } else render_priv -> state . be = 0 ; } else if ( tag ( \"b\" ) ) { int val = argtoi ( * args ) ; if ( ! nargs || ! ( val == 0 || val == 1 || val >= 100 ) ) val = render_priv -> state . style -> Bold ; render_priv -> state . bold = val ; update_font ( render_priv ) ; } else if ( tag ( \"i\" ) ) { int val = argtoi ( * args ) ; if ( ! nargs || ! ( val == 0 || val == 1 ) ) val = render_priv -> state . style -> Italic ; render_priv -> state . italic = val ; update_font ( render_priv ) ; } else if ( tag ( \"kf\" ) || tag ( \"K\" ) ) { double val = 100 ; if ( nargs ) val = argtod ( * args ) ; render_priv -> state . effect_type = EF_KARAOKE_KF ; if ( render_priv -> state . effect_timing ) render_priv -> state . effect_skip_timing += render_priv -> state . effect_timing ; render_priv -> state . effect_timing = val * 10 ; } else if ( tag ( \"ko\" ) ) { double val = 100 ; if ( nargs ) val = argtod ( * args ) ; render_priv -> state . effect_type = EF_KARAOKE_KO ; if ( render_priv -> state . effect_timing ) render_priv -> state . effect_skip_timing += render_priv -> state . effect_timing ; render_priv -> state . effect_timing = val * 10 ; } else if ( tag ( \"k\" ) ) { double val = 100 ; if ( nargs ) val = argtod ( * args ) ; render_priv -> state . effect_type = EF_KARAOKE ; if ( render_priv -> state . effect_timing ) render_priv -> state . effect_skip_timing += render_priv -> state . effect_timing ; render_priv -> state . effect_timing = val * 10 ; } else if ( tag ( \"shad\" ) ) { double val , xval , yval ; if ( nargs ) { val = argtod ( * args ) ; xval = render_priv -> state . shadow_x * ( 1 - pwr ) + val * pwr ; yval = render_priv -> state . shadow_y * ( 1 - pwr ) + val * pwr ; xval = ( xval < 0 ) ? 0 : xval ; yval = ( yval < 0 ) ? 0 : yval ; } else xval = yval = render_priv -> state . style -> Shadow ; render_priv -> state . shadow_x = xval ; render_priv -> state . shadow_y = yval ; } else if ( tag ( \"s\" ) ) { int val = argtoi ( * args ) ; if ( ! nargs || ! ( val == 0 || val == 1 ) ) val = render_priv -> state . style -> StrikeOut ; if ( val ) render_priv -> state . flags |= DECO_STRIKETHROUGH ; else render_priv -> state . flags &= ~ DECO_STRIKETHROUGH ; } else if ( tag ( \"u\" ) ) { int val = argtoi ( * args ) ; if ( ! nargs || ! ( val == 0 || val == 1 ) ) val = render_priv -> state . style -> Underline ; if ( val ) render_priv -> state . flags |= DECO_UNDERLINE ; else render_priv -> state . flags &= ~ DECO_UNDERLINE ; } else if ( tag ( \"pbo\" ) ) { double val = argtod ( * args ) ; render_priv -> state . pbo = val ; } else if ( tag ( \"p\" ) ) { int val = argtoi ( * args ) ; val = ( val < 0 ) ? 0 : val ; render_priv -> state . drawing_scale = val ; } else if ( tag ( \"q\" ) ) { int val = argtoi ( * args ) ; if ( ! nargs || ! ( val >= 0 && val <= 3 ) ) val = render_priv -> track -> WrapStyle ; render_priv -> state . wrap_style = val ; } else if ( tag ( \"fe\" ) ) { int val ; if ( nargs ) val = argtoi ( * args ) ; else val = render_priv -> state . style -> Encoding ; render_priv -> state . font_encoding = val ; } } return p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . start ; if ( args [ cnt ] . end < end ) { <S2SV_ModStart> k ) ; } else { assert ( q == end ) ; pwr = k ; q = p ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 static int __ext4_set_acl ( handle_t * handle , struct inode * inode , int type , struct posix_acl * acl ) { int name_index ; void * value = NULL ; size_t size = 0 ; int error ; switch ( type ) { case ACL_TYPE_ACCESS : name_index = EXT4_XATTR_INDEX_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; else { inode -> i_ctime = ext4_current_time ( inode ) ; ext4_mark_inode_dirty ( handle , inode ) ; <S2SV_StartBug> if ( error == 0 ) <S2SV_EndBug> acl = NULL ; } } break ; case ACL_TYPE_DEFAULT : name_index = EXT4_XATTR_INDEX_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = ext4_acl_to_disk ( acl , & size ) ; if ( IS_ERR ( value ) ) return ( int ) PTR_ERR ( value ) ; } error = ext4_xattr_set_handle ( handle , inode , name_index , \"\" , value , size , 0 ) ; kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( error ) return error ; <S2SV_ModEnd> inode -> i_ctime <S2SV_ModStart> inode ) ; <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-119 void mp_encode_lua_table_as_map ( lua_State * L , mp_buf * buf , int level ) { <S2SV_StartBug> size_t len = 0 ; <S2SV_EndBug> lua_pushnil ( L ) ; while ( lua_next ( L , - 2 ) ) { lua_pop ( L , 1 ) ; len ++ ; } mp_encode_map ( L , buf , len ) ; lua_pushnil ( L ) ; while ( lua_next ( L , - 2 ) ) { lua_pushvalue ( L , - 2 ) ; mp_encode_lua_type ( L , buf , level + 1 ) ; mp_encode_lua_type ( L , buf , level + 1 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = 0 ; luaL_checkstack ( L , 3 , \"in<S2SV_blank>function<S2SV_blank>mp_encode_lua_table_as_map\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7529\n\n```\nCWE-125 static MagickBooleanType load_tile ( Image * image , Image * tile_image , XCFDocInfo * inDocInfo , XCFLayerInfo * inLayerInfo , size_t data_length , ExceptionInfo * exception ) { ssize_t y ; register ssize_t x ; register Quantum * q ; ssize_t count ; unsigned char * graydata ; XCFPixelInfo * xcfdata , * xcfodata ; <S2SV_StartBug> xcfdata = ( XCFPixelInfo * ) AcquireQuantumMemory ( data_length , sizeof ( * xcfdata ) ) ; <S2SV_EndBug> if ( xcfdata == ( XCFPixelInfo * ) NULL ) ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; xcfodata = xcfdata ; graydata = ( unsigned char * ) xcfdata ; count = ReadBlob ( image , data_length , ( unsigned char * ) xcfdata ) ; if ( count != ( ssize_t ) data_length ) ThrowBinaryException ( CorruptImageError , \"NotEnoughPixelData\" , image -> filename ) ; for ( y = 0 ; y < ( ssize_t ) tile_image -> rows ; y ++ ) { q = GetAuthenticPixels ( tile_image , 0 , y , tile_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; if ( inDocInfo -> image_type == GIMP_GRAY ) { for ( x = 0 ; x < ( ssize_t ) tile_image -> columns ; x ++ ) { SetPixelGray ( tile_image , ScaleCharToQuantum ( * graydata ) , q ) ; SetPixelAlpha ( tile_image , ScaleCharToQuantum ( ( unsigned char ) inLayerInfo -> alpha ) , q ) ; graydata ++ ; q += GetPixelChannels ( tile_image ) ; } } else if ( inDocInfo -> image_type == GIMP_RGB ) { for ( x = 0 ; x < ( ssize_t ) tile_image -> columns ; x ++ ) { SetPixelRed ( tile_image , ScaleCharToQuantum ( xcfdata -> red ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( xcfdata -> green ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( xcfdata -> blue ) , q ) ; SetPixelAlpha ( tile_image , xcfdata -> alpha == 255U ? TransparentAlpha : ScaleCharToQuantum ( ( unsigned char ) inLayerInfo -> alpha ) , q ) ; xcfdata ++ ; q += GetPixelChannels ( tile_image ) ; } } if ( SyncAuthenticPixels ( tile_image , exception ) == MagickFalse ) break ; } xcfodata = ( XCFPixelInfo * ) RelinquishMagickMemory ( xcfodata ) ; return MagickTrue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) AcquireQuantumMemory ( MagickMax ( data_length , tile_image -> columns * tile_image -> rows ) <S2SV_ModEnd> , sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int raw_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; size_t copied = 0 ; int err = - EOPNOTSUPP ; struct sockaddr_in * sin = ( struct sockaddr_in * ) msg -> msg_name ; struct sk_buff * skb ; if ( flags & MSG_OOB ) <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( * sin ) ; if ( flags & MSG_ERRQUEUE ) { err = ip_recv_error ( sk , msg , len ) ; goto out ; } skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; sin -> sin_port = 0 ; memset ( & sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; if ( flags & MSG_TRUNC ) copied = skb -> len ; done : skb_free_datagram ( sk , skb ) ; out : if ( err ) return err ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto out <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) ; * addr_len = sizeof ( * sin ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_end_first_pass ( VP9_COMP * cpi ) { <S2SV_StartBug> if ( cpi -> use_svc && cpi -> svc . number_temporal_layers == 1 ) { <S2SV_EndBug> int i ; for ( i = 0 ; i < cpi -> svc . number_spatial_layers ; ++ i ) { output_stats ( & cpi -> svc . layer_context [ i ] . twopass . total_stats , cpi -> output_pkt_list ) ; } } else { output_stats ( & cpi -> twopass . total_stats , cpi -> output_pkt_list ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( is_two_pass_svc ( cpi ) <S2SV_ModEnd> ) { int\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14361\n\n```\nCWE-20 static int nntp_fetch_headers ( struct Context * ctx , void * hc , anum_t first , anum_t last , int restore ) { struct NntpData * nntp_data = ctx -> data ; struct FetchCtx fc ; struct Header * hdr = NULL ; char buf [ HUGE_STRING ] ; int rc = 0 ; int oldmsgcount = ctx -> msgcount ; anum_t current ; anum_t first_over = first ; # ifdef USE_HCACHE void * hdata = NULL ; # endif if ( ! last || first > last ) return 0 ; fc . ctx = ctx ; fc . first = first ; fc . last = last ; fc . restore = restore ; <S2SV_StartBug> fc . messages = mutt_mem_calloc ( last - first + 1 , sizeof ( unsigned char ) ) ; <S2SV_EndBug> # ifdef USE_HCACHE fc . hc = hc ; # endif if ( NntpListgroup && nntp_data -> nserv -> hasLISTGROUP && ! nntp_data -> deleted ) { if ( ! ctx -> quiet ) mutt_message ( _ ( \"Fetching<S2SV_blank>list<S2SV_blank>of<S2SV_blank>articles...\" ) ) ; if ( nntp_data -> nserv -> hasLISTGROUPrange ) snprintf ( buf , sizeof ( buf ) , \"LISTGROUP<S2SV_blank>%s<S2SV_blank>%u-%u\\\\r\\\\n\" , nntp_data -> group , first , last ) ; else snprintf ( buf , sizeof ( buf ) , \"LISTGROUP<S2SV_blank>%s\\\\r\\\\n\" , nntp_data -> group ) ; rc = nntp_fetch_lines ( nntp_data , buf , sizeof ( buf ) , NULL , fetch_numbers , & fc ) ; if ( rc > 0 ) { mutt_error ( \"LISTGROUP:<S2SV_blank>%s\" , buf ) ; } if ( rc == 0 ) { for ( current = first ; current <= last && rc == 0 ; current ++ ) { if ( fc . messages [ current - first ] ) continue ; snprintf ( buf , sizeof ( buf ) , \"%u\" , current ) ; if ( nntp_data -> bcache ) { mutt_debug ( 2 , \"#1<S2SV_blank>mutt_bcache_del<S2SV_blank>%s\\\\n\" , buf ) ; mutt_bcache_del ( nntp_data -> bcache , buf ) ; } # ifdef USE_HCACHE if ( fc . hc ) { mutt_debug ( 2 , \"mutt_hcache_delete<S2SV_blank>%s\\\\n\" , buf ) ; mutt_hcache_delete ( fc . hc , buf , strlen ( buf ) ) ; } # endif } } } else { for ( current = first ; current <= last ; current ++ ) fc . messages [ current - first ] = 1 ; } if ( ! ctx -> quiet ) { mutt_progress_init ( & fc . progress , _ ( \"Fetching<S2SV_blank>message<S2SV_blank>headers...\" ) , MUTT_PROGRESS_MSG , ReadInc , last - first + 1 ) ; } for ( current = first ; current <= last && rc == 0 ; current ++ ) { if ( ! ctx -> quiet ) mutt_progress_update ( & fc . progress , current - first + 1 , - 1 ) ; # ifdef USE_HCACHE snprintf ( buf , sizeof ( buf ) , \"%u\" , current ) ; # endif if ( ! fc . messages [ current - first ] ) continue ; if ( ctx -> msgcount >= ctx -> hdrmax ) mx_alloc_memory ( ctx ) ; # ifdef USE_HCACHE hdata = mutt_hcache_fetch ( fc . hc , buf , strlen ( buf ) ) ; if ( hdata ) { mutt_debug ( 2 , \"mutt_hcache_fetch<S2SV_blank>%s\\\\n\" , buf ) ; ctx -> hdrs [ ctx -> msgcount ] = hdr = mutt_hcache_restore ( hdata ) ; mutt_hcache_free ( fc . hc , & hdata ) ; hdr -> data = 0 ; if ( hdr -> deleted && ! restore ) { mutt_header_free ( & hdr ) ; if ( nntp_data -> bcache ) { mutt_debug ( 2 , \"#2<S2SV_blank>mutt_bcache_del<S2SV_blank>%s\\\\n\" , buf ) ; mutt_bcache_del ( nntp_data -> bcache , buf ) ; } continue ; } hdr -> read = false ; hdr -> old = false ; } else # endif if ( nntp_data -> deleted ) continue ; else if ( nntp_data -> nserv -> hasOVER || nntp_data -> nserv -> hasXOVER ) { if ( NntpListgroup && nntp_data -> nserv -> hasLISTGROUP ) break ; else continue ; } else { FILE * fp = mutt_file_mkstemp ( ) ; if ( ! fp ) { mutt_perror ( \"mutt_file_mkstemp()<S2SV_blank>failed!\" ) ; rc = - 1 ; break ; } snprintf ( buf , sizeof ( buf ) , \"HEAD<S2SV_blank>%u\\\\r\\\\n\" , current ) ; rc = nntp_fetch_lines ( nntp_data , buf , sizeof ( buf ) , NULL , fetch_tempfile , fp ) ; if ( rc ) { mutt_file_fclose ( & fp ) ; if ( rc < 0 ) break ; if ( mutt_str_strncmp ( \"423\" , buf , 3 ) != 0 ) { mutt_error ( \"HEAD:<S2SV_blank>%s\" , buf ) ; break ; } if ( nntp_data -> bcache ) { snprintf ( buf , sizeof ( buf ) , \"%u\" , current ) ; mutt_debug ( 2 , \"#3<S2SV_blank>mutt_bcache_del<S2SV_blank>%s\\\\n\" , buf ) ; mutt_bcache_del ( nntp_data -> bcache , buf ) ; } rc = 0 ; continue ; } hdr = ctx -> hdrs [ ctx -> msgcount ] = mutt_header_new ( ) ; hdr -> env = mutt_rfc822_read_header ( fp , hdr , 0 , 0 ) ; hdr -> received = hdr -> date_sent ; mutt_file_fclose ( & fp ) ; } hdr -> index = ctx -> msgcount ++ ; hdr -> read = false ; hdr -> old = false ; hdr -> deleted = false ; hdr -> data = mutt_mem_calloc ( 1 , sizeof ( struct NntpHeaderData ) ) ; NHDR ( hdr ) -> article_num = current ; if ( restore ) hdr -> changed = true ; else { nntp_article_status ( ctx , hdr , NULL , NHDR ( hdr ) -> article_num ) ; if ( ! hdr -> read ) nntp_parse_xref ( ctx , hdr ) ; } if ( current > nntp_data -> last_loaded ) nntp_data -> last_loaded = current ; first_over = current + 1 ; } if ( ! NntpListgroup || ! nntp_data -> nserv -> hasLISTGROUP ) current = first_over ; if ( current <= last && rc == 0 && ! nntp_data -> deleted ) { char * cmd = nntp_data -> nserv -> hasOVER ? \"OVER\" : \"XOVER\" ; snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>%u-%u\\\\r\\\\n\" , cmd , current , last ) ; rc = nntp_fetch_lines ( nntp_data , buf , sizeof ( buf ) , NULL , parse_overview_line , & fc ) ; if ( rc > 0 ) { mutt_error ( \"%s:<S2SV_blank>%s\" , cmd , buf ) ; } } if ( ctx -> msgcount > oldmsgcount ) mx_update_context ( ctx , ctx -> msgcount - oldmsgcount ) ; FREE ( & fc . messages ) ; if ( rc != 0 ) return - 1 ; mutt_clear_error ( ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char ) ) ; if ( fc . messages == NULL ) return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6701\n\n```\nCWE-000 static ssize_t aio_setup_iocb ( struct kiocb * kiocb , bool compat ) { struct file * file = kiocb -> ki_filp ; ssize_t ret = 0 ; switch ( kiocb -> ki_opcode ) { case IOCB_CMD_PREAD : ret = - EBADF ; if ( unlikely ( ! ( file -> f_mode & FMODE_READ ) ) ) break ; ret = - EFAULT ; if ( unlikely ( ! access_ok ( VERIFY_WRITE , kiocb -> ki_buf , kiocb -> ki_left ) ) ) break ; <S2SV_StartBug> ret = security_file_permission ( file , MAY_READ ) ; <S2SV_EndBug> if ( unlikely ( ret ) ) break ; ret = aio_setup_single_vector ( kiocb ) ; if ( ret ) break ; ret = - EINVAL ; if ( file -> f_op -> aio_read ) kiocb -> ki_retry = aio_rw_vect_retry ; break ; case IOCB_CMD_PWRITE : ret = - EBADF ; if ( unlikely ( ! ( file -> f_mode & FMODE_WRITE ) ) ) break ; ret = - EFAULT ; if ( unlikely ( ! access_ok ( VERIFY_READ , kiocb -> ki_buf , kiocb -> ki_left ) ) ) break ; <S2SV_StartBug> ret = security_file_permission ( file , MAY_WRITE ) ; <S2SV_EndBug> if ( unlikely ( ret ) ) break ; ret = aio_setup_single_vector ( kiocb ) ; if ( ret ) break ; ret = - EINVAL ; if ( file -> f_op -> aio_write ) kiocb -> ki_retry = aio_rw_vect_retry ; break ; case IOCB_CMD_PREADV : ret = - EBADF ; if ( unlikely ( ! ( file -> f_mode & FMODE_READ ) ) ) break ; <S2SV_StartBug> ret = security_file_permission ( file , MAY_READ ) ; <S2SV_EndBug> if ( unlikely ( ret ) ) break ; ret = aio_setup_vectored_rw ( READ , kiocb , compat ) ; if ( ret ) break ; ret = - EINVAL ; if ( file -> f_op -> aio_read ) kiocb -> ki_retry = aio_rw_vect_retry ; break ; case IOCB_CMD_PWRITEV : ret = - EBADF ; if ( unlikely ( ! ( file -> f_mode & FMODE_WRITE ) ) ) break ; <S2SV_StartBug> ret = security_file_permission ( file , MAY_WRITE ) ; <S2SV_EndBug> if ( unlikely ( ret ) ) break ; ret = aio_setup_vectored_rw ( WRITE , kiocb , compat ) ; if ( ret ) break ; ret = - EINVAL ; if ( file -> f_op -> aio_write ) kiocb -> ki_retry = aio_rw_vect_retry ; break ; case IOCB_CMD_FDSYNC : ret = - EINVAL ; if ( file -> f_op -> aio_fsync ) kiocb -> ki_retry = aio_fdsync ; break ; case IOCB_CMD_FSYNC : ret = - EINVAL ; if ( file -> f_op -> aio_fsync ) kiocb -> ki_retry = aio_fsync ; break ; default : dprintk ( \"EINVAL:<S2SV_blank>io_submit:<S2SV_blank>no<S2SV_blank>operation<S2SV_blank>provided\\\\n\" ) ; ret = - EINVAL ; } if ( ! kiocb -> ki_retry ) return ret ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ret = aio_setup_single_vector ( READ , file , <S2SV_ModEnd> kiocb ) ; <S2SV_ModStart> ; ret = aio_setup_single_vector ( WRITE , file , <S2SV_ModEnd> kiocb ) ; <S2SV_ModStart> ; ret = <S2SV_ModEnd> aio_setup_vectored_rw ( READ <S2SV_ModStart> ; ret = <S2SV_ModEnd> aio_setup_vectored_rw ( WRITE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20915\n\n```\nCWE-125 void bit_write_UMC ( Bit_Chain * dat , BITCODE_UMC val ) { int i , j ; int negative ; unsigned char byte [ 5 ] ; BITCODE_UMC mask ; BITCODE_UMC value ; value = val ; mask = 0x0000007f ; for ( i = 4 , j = 0 ; i >= 0 ; i -- , j += 7 ) { byte [ i ] = ( unsigned char ) ( ( value & mask ) >> j ) ; byte [ i ] |= 0x80 ; mask = mask << 7 ; } for ( i = 0 ; i < 4 ; i ++ ) if ( byte [ i ] & 0x7f ) break ; <S2SV_StartBug> if ( byte [ i ] & 0x40 ) <S2SV_EndBug> i -- ; byte [ i ] &= 0x7f ; for ( j = 4 ; j >= i ; j -- ) bit_write_RC ( dat , byte [ j ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] & 0x40 && i > 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1583\n\n```\nCWE-399 static int xfrm6_tunnel_rcv ( struct sk_buff * skb ) { struct ipv6hdr * iph = ipv6_hdr ( skb ) ; __be32 spi ; spi = xfrm6_tunnel_spi_lookup ( ( xfrm_address_t * ) & iph -> saddr ) ; <S2SV_StartBug> return xfrm6_rcv_spi ( skb , spi ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , spi ) > 0 ? : 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static char * get_header ( FILE * fp ) { <S2SV_StartBug> long start ; <S2SV_EndBug> <S2SV_StartBug> char * header ; <S2SV_EndBug> header = calloc ( 1 , 1024 ) ; <S2SV_StartBug> start = ftell ( fp ) ; <S2SV_EndBug> fseek ( fp , 0 , SEEK_SET ) ; SAFE_E ( fread ( header , 1 , 1023 , fp ) , 1023 , \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>PDF<S2SV_blank>header.\\\\n\" ) ; fseek ( fp , start , SEEK_SET ) ; return header ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fp ) { <S2SV_ModEnd> char * header <S2SV_ModStart> char * header = safe_calloc ( <S2SV_ModEnd> 1024 ) ; <S2SV_ModStart> 1024 ) ; long\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 static void unix_detach_fds ( struct scm_cookie * scm , struct sk_buff * skb ) { int i ; scm -> fp = UNIXCB ( skb ) . fp ; UNIXCB ( skb ) . fp = NULL ; for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) <S2SV_StartBug> unix_notinflight ( scm -> fp -> fp [ i ] ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> fp -> user , scm -> fp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20763\n\n```\nCWE-787 int mp4client_main ( int argc , char * * argv ) { char c ; const char * str ; int ret_val = 0 ; u32 i , times [ 100 ] , nb_times , dump_mode ; u32 simulation_time_in_ms = 0 ; u32 initial_service_id = 0 ; Bool auto_exit = GF_FALSE ; Bool logs_set = GF_FALSE ; Bool start_fs = GF_FALSE ; Bool use_rtix = GF_FALSE ; Bool pause_at_first = GF_FALSE ; Bool no_cfg_save = GF_FALSE ; Bool is_cfg_only = GF_FALSE ; Double play_from = 0 ; # ifdef GPAC_MEMORY_TRACKING GF_MemTrackerType mem_track = GF_MemTrackerNone ; # endif Double fps = GF_IMPORT_DEFAULT_FPS ; Bool fill_ar , visible , do_uncache , has_command ; char * url_arg , * out_arg , * the_cfg , * rti_file , * views , * mosaic ; FILE * logfile = NULL ; Float scale = 1 ; # ifndef WIN32 dlopen ( NULL , RTLD_NOW | RTLD_GLOBAL ) ; # endif strcpy ( the_url , \".\" ) ; memset ( & user , 0 , sizeof ( GF_User ) ) ; dump_mode = DUMP_NONE ; fill_ar = visible = do_uncache = has_command = GF_FALSE ; url_arg = out_arg = the_cfg = rti_file = views = mosaic = NULL ; nb_times = 0 ; times [ 0 ] = 0 ; for ( i = 1 ; i < ( u32 ) argc ; i ++ ) { char * arg = argv [ i ] ; if ( ! strcmp ( arg , \"-c\" ) || ! strcmp ( arg , \"-cfg\" ) ) { the_cfg = argv [ i + 1 ] ; i ++ ; } else if ( ! strcmp ( arg , \"-mem-track\" ) || ! strcmp ( arg , \"-mem-track-stack\" ) ) { # ifdef GPAC_MEMORY_TRACKING mem_track = ! strcmp ( arg , \"-mem-track-stack\" ) ? GF_MemTrackerBackTrace : GF_MemTrackerSimple ; # else fprintf ( stderr , \"WARNING<S2SV_blank>-<S2SV_blank>GPAC<S2SV_blank>not<S2SV_blank>compiled<S2SV_blank>with<S2SV_blank>Memory<S2SV_blank>Tracker<S2SV_blank>-<S2SV_blank>ignoring<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , arg ) ; # endif } else if ( ! strcmp ( arg , \"-gui\" ) ) { gui_mode = 1 ; } else if ( ! strcmp ( arg , \"-guid\" ) ) { gui_mode = 2 ; } else if ( ! strcmp ( arg , \"-h\" ) || ! strcmp ( arg , \"-help\" ) ) { PrintUsage ( ) ; return 0 ; } } # ifdef GPAC_MEMORY_TRACKING gf_sys_init ( mem_track ) ; # else gf_sys_init ( GF_MemTrackerNone ) ; # endif gf_sys_set_args ( argc , ( const char * * ) argv ) ; cfg_file = gf_cfg_init ( the_cfg , NULL ) ; if ( ! cfg_file ) { fprintf ( stderr , \"Error:<S2SV_blank>Configuration<S2SV_blank>File<S2SV_blank>not<S2SV_blank>found\\\\n\" ) ; return 1 ; } if ( gf_log_set_tools_levels ( gf_cfg_get_key ( cfg_file , \"General\" , \"Logs\" ) ) != GF_OK ) { return 1 ; } if ( gf_cfg_get_key ( cfg_file , \"General\" , \"Logs\" ) != NULL ) { logs_set = GF_TRUE ; } if ( ! gui_mode ) { str = gf_cfg_get_key ( cfg_file , \"General\" , \"ForceGUI\" ) ; if ( str && ! strcmp ( str , \"yes\" ) ) gui_mode = 1 ; } for ( i = 1 ; i < ( u32 ) argc ; i ++ ) { char * arg = argv [ i ] ; if ( ! strcmp ( arg , \"-rti\" ) ) { rti_file = argv [ i + 1 ] ; i ++ ; } else if ( ! strcmp ( arg , \"-rtix\" ) ) { rti_file = argv [ i + 1 ] ; i ++ ; use_rtix = GF_TRUE ; } else if ( ! stricmp ( arg , \"-size\" ) ) { if ( sscanf ( argv [ i + 1 ] , \"%dx%d\" , & forced_width , & forced_height ) != 2 ) { forced_width = forced_height = 0 ; } i ++ ; } else if ( ! strcmp ( arg , \"-quiet\" ) ) { be_quiet = 1 ; } else if ( ! strcmp ( arg , \"-strict-error\" ) ) { gf_log_set_strict_error ( 1 ) ; } else if ( ! strcmp ( arg , \"-log-file\" ) || ! strcmp ( arg , \"-lf\" ) ) { logfile = gf_fopen ( argv [ i + 1 ] , \"wt\" ) ; gf_log_set_callback ( logfile , on_gpac_log ) ; i ++ ; } else if ( ! strcmp ( arg , \"-logs\" ) ) { if ( gf_log_set_tools_levels ( argv [ i + 1 ] ) != GF_OK ) { return 1 ; } logs_set = GF_TRUE ; i ++ ; } else if ( ! strcmp ( arg , \"-log-clock\" ) || ! strcmp ( arg , \"-lc\" ) ) { log_time_start = 1 ; } else if ( ! strcmp ( arg , \"-log-utc\" ) || ! strcmp ( arg , \"-lu\" ) ) { log_utc_time = 1 ; } # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) else if ( ! strcmp ( arg , \"-thread\" ) ) threading_flags = 0 ; # else else if ( ! strcmp ( arg , \"-no-thread\" ) ) threading_flags = GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD | GF_TERM_WINDOW_NO_THREAD ; # endif else if ( ! strcmp ( arg , \"-no-cthread\" ) || ! strcmp ( arg , \"-no-compositor-thread\" ) ) threading_flags |= GF_TERM_NO_COMPOSITOR_THREAD ; else if ( ! strcmp ( arg , \"-no-audio\" ) ) no_audio = 1 ; else if ( ! strcmp ( arg , \"-no-regulation\" ) ) no_regulation = 1 ; else if ( ! strcmp ( arg , \"-fs\" ) ) start_fs = 1 ; else if ( ! strcmp ( arg , \"-opt\" ) ) { set_cfg_option ( argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-conf\" ) ) { set_cfg_option ( argv [ i + 1 ] ) ; is_cfg_only = GF_TRUE ; i ++ ; } else if ( ! strcmp ( arg , \"-ifce\" ) ) { gf_cfg_set_key ( cfg_file , \"Network\" , \"DefaultMCastInterface\" , argv [ i + 1 ] ) ; i ++ ; } else if ( ! stricmp ( arg , \"-help\" ) ) { PrintUsage ( ) ; return 1 ; } else if ( ! stricmp ( arg , \"-noprog\" ) ) { no_prog = 1 ; gf_set_progress_callback ( NULL , progress_quiet ) ; } else if ( ! stricmp ( arg , \"-no-save\" ) || ! stricmp ( arg , \"--no-save\" ) ) { no_cfg_save = 1 ; } else if ( ! stricmp ( arg , \"-ntp-shift\" ) ) { s32 shift = atoi ( argv [ i + 1 ] ) ; i ++ ; gf_net_set_ntp_shift ( shift ) ; } else if ( ! stricmp ( arg , \"-run-for\" ) ) { simulation_time_in_ms = atoi ( argv [ i + 1 ] ) * 1000 ; if ( ! simulation_time_in_ms ) simulation_time_in_ms = 1 ; i ++ ; } else if ( ! strcmp ( arg , \"-out\" ) ) { out_arg = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-fps\" ) ) { fps = atof ( argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-avi\" ) || ! strcmp ( arg , \"-sha\" ) ) { dump_mode &= 0xFFFF0000 ; if ( ! strcmp ( arg , \"-sha\" ) ) dump_mode |= DUMP_SHA1 ; else dump_mode |= DUMP_AVI ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) { if ( ! strcmp ( arg , \"-avi\" ) && ( nb_times != 2 ) ) { fprintf ( stderr , \"Only<S2SV_blank>one<S2SV_blank>time<S2SV_blank>arg<S2SV_blank>found<S2SV_blank>for<S2SV_blank>-avi<S2SV_blank>-<S2SV_blank>check<S2SV_blank>usage\\\\n\" ) ; return 1 ; } i ++ ; } } else if ( ! strcmp ( arg , \"-rgbds\" ) ) { dump_mode |= DUMP_RGB_DEPTH_SHAPE ; } else if ( ! strcmp ( arg , \"-rgbd\" ) ) { dump_mode |= DUMP_RGB_DEPTH ; } else if ( ! strcmp ( arg , \"-depth\" ) ) { dump_mode |= DUMP_DEPTH_ONLY ; } else if ( ! strcmp ( arg , \"-bmp\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_BMP ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! strcmp ( arg , \"-png\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_PNG ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! strcmp ( arg , \"-raw\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_RAW ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! stricmp ( arg , \"-scale\" ) ) { sscanf ( argv [ i + 1 ] , \"%f\" , & scale ) ; i ++ ; } else if ( ! strcmp ( arg , \"-c\" ) || ! strcmp ( arg , \"-cfg\" ) ) { i ++ ; } if ( ! gui_mode ) { if ( arg [ 0 ] != '-' ) { if ( url_arg ) { fprintf ( stderr , \"Several<S2SV_blank>input<S2SV_blank>URLs<S2SV_blank>provided<S2SV_blank>(\\\\\"%s\\\\\",<S2SV_blank>\\\\\"%s\\\\\").<S2SV_blank>Check<S2SV_blank>your<S2SV_blank>command-line.\\\\n\" , url_arg , arg ) ; return 1 ; } url_arg = arg ; } else if ( ! strcmp ( arg , \"-loop\" ) ) loop_at_end = 1 ; else if ( ! strcmp ( arg , \"-bench\" ) ) bench_mode = 1 ; else if ( ! strcmp ( arg , \"-vbench\" ) ) bench_mode = 2 ; else if ( ! strcmp ( arg , \"-sbench\" ) ) bench_mode = 3 ; else if ( ! strcmp ( arg , \"-no-addon\" ) ) enable_add_ons = GF_FALSE ; else if ( ! strcmp ( arg , \"-pause\" ) ) pause_at_first = 1 ; else if ( ! strcmp ( arg , \"-play-from\" ) ) { play_from = atof ( ( const char * ) argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-speed\" ) ) { playback_speed = FLT2FIX ( atof ( ( const char * ) argv [ i + 1 ] ) ) ; if ( playback_speed <= 0 ) playback_speed = FIX_ONE ; i ++ ; } else if ( ! strcmp ( arg , \"-no-wnd\" ) ) user . init_flags |= GF_TERM_WINDOWLESS ; else if ( ! strcmp ( arg , \"-no-back\" ) ) user . init_flags |= GF_TERM_WINDOW_TRANSPARENT ; else if ( ! strcmp ( arg , \"-align\" ) ) { if ( argv [ i + 1 ] [ 0 ] == 'm' ) align_mode = 1 ; else if ( argv [ i + 1 ] [ 0 ] == 'b' ) align_mode = 2 ; align_mode <<= 8 ; if ( argv [ i + 1 ] [ 1 ] == 'm' ) align_mode |= 1 ; else if ( argv [ i + 1 ] [ 1 ] == 'r' ) align_mode |= 2 ; i ++ ; } else if ( ! strcmp ( arg , \"-fill\" ) ) { fill_ar = GF_TRUE ; } else if ( ! strcmp ( arg , \"-show\" ) ) { visible = 1 ; } else if ( ! strcmp ( arg , \"-uncache\" ) ) { do_uncache = GF_TRUE ; } else if ( ! strcmp ( arg , \"-exit\" ) ) auto_exit = GF_TRUE ; else if ( ! stricmp ( arg , \"-views\" ) ) { views = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-mosaic\" ) ) { mosaic = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-com\" ) ) { has_command = GF_TRUE ; i ++ ; } else if ( ! stricmp ( arg , \"-service\" ) ) { initial_service_id = atoi ( argv [ i + 1 ] ) ; i ++ ; } } } if ( is_cfg_only ) { gf_cfg_del ( cfg_file ) ; fprintf ( stderr , \"GPAC<S2SV_blank>Config<S2SV_blank>updated\\\\n\" ) ; return 0 ; } if ( do_uncache ) { const char * cache_dir = gf_cfg_get_key ( cfg_file , \"General\" , \"CacheDirectory\" ) ; do_flatten_cache ( cache_dir ) ; fprintf ( stderr , \"GPAC<S2SV_blank>Cache<S2SV_blank>dir<S2SV_blank>%s<S2SV_blank>flattened\\\\n\" , cache_dir ) ; gf_cfg_del ( cfg_file ) ; return 0 ; } if ( dump_mode && ! url_arg ) { FILE * test ; url_arg = ( char * ) gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) ; test = url_arg ? gf_fopen ( url_arg , \"rt\" ) : NULL ; if ( ! test ) url_arg = NULL ; else gf_fclose ( test ) ; if ( ! url_arg ) { fprintf ( stderr , \"Missing<S2SV_blank>argument<S2SV_blank>for<S2SV_blank>dump\\\\n\" ) ; PrintUsage ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } } if ( ! gui_mode && ! url_arg && ( gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) != NULL ) ) { gui_mode = 1 ; } # ifdef WIN32 if ( gui_mode == 1 ) { const char * opt ; TCHAR buffer [ 1024 ] ; DWORD res = GetCurrentDirectory ( 1024 , buffer ) ; buffer [ res ] = 0 ; opt = gf_cfg_get_key ( cfg_file , \"General\" , \"ModulesDirectory\" ) ; if ( strstr ( opt , buffer ) ) { gui_mode = 1 ; } else { gui_mode = 2 ; } } # endif if ( gui_mode == 1 ) { hide_shell ( 1 ) ; } if ( gui_mode ) { no_prog = 1 ; gf_set_progress_callback ( NULL , progress_quiet ) ; } if ( ! url_arg && simulation_time_in_ms ) simulation_time_in_ms += gf_sys_clock ( ) ; # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) carbon_init ( ) ; # endif if ( dump_mode ) rti_file = NULL ; if ( ! logs_set ) { gf_log_set_tool_level ( GF_LOG_ALL , GF_LOG_WARNING ) ; } if ( rti_file || logfile || log_utc_time || log_time_start ) gf_log_set_callback ( NULL , on_gpac_log ) ; if ( rti_file ) init_rti_logs ( rti_file , url_arg , use_rtix ) ; { GF_SystemRTInfo rti ; if ( gf_sys_get_rti ( 0 , & rti , 0 ) ) fprintf ( stderr , \"System<S2SV_blank>info:<S2SV_blank>%d<S2SV_blank>MB<S2SV_blank>RAM<S2SV_blank>-<S2SV_blank>%d<S2SV_blank>cores\\\\n\" , ( u32 ) ( rti . physical_memory / 1024 / 1024 ) , rti . nb_cores ) ; } if ( dump_mode ) { user . init_flags |= GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD | GF_TERM_NO_REGULATION ; if ( ! visible ) user . init_flags |= GF_TERM_INIT_HIDE ; gf_cfg_set_key ( cfg_file , \"Audio\" , \"DriverName\" , \"Raw<S2SV_blank>Audio<S2SV_blank>Output\" ) ; no_cfg_save = GF_TRUE ; } else { init_w = forced_width ; init_h = forced_height ; } user . modules = gf_modules_new ( NULL , cfg_file ) ; if ( user . modules ) i = gf_modules_get_count ( user . modules ) ; if ( ! i || ! user . modules ) { fprintf ( stderr , \"Error:<S2SV_blank>no<S2SV_blank>modules<S2SV_blank>found<S2SV_blank>-<S2SV_blank>exiting\\\\n\" ) ; if ( user . modules ) gf_modules_del ( user . modules ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } fprintf ( stderr , \"Modules<S2SV_blank>Found<S2SV_blank>:<S2SV_blank>%d<S2SV_blank>\\\\n\" , i ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"GPACVersion\" ) ; if ( ! str || strcmp ( str , GPAC_FULL_VERSION ) ) { gf_cfg_del_section ( cfg_file , \"PluginsCache\" ) ; gf_cfg_set_key ( cfg_file , \"General\" , \"GPACVersion\" , GPAC_FULL_VERSION ) ; } user . config = cfg_file ; user . EventProc = GPAC_EventProc ; user . opaque = user . modules ; if ( threading_flags ) user . init_flags |= threading_flags ; if ( no_audio ) user . init_flags |= GF_TERM_NO_AUDIO ; if ( no_regulation ) user . init_flags |= GF_TERM_NO_REGULATION ; if ( threading_flags & ( GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD ) ) term_step = GF_TRUE ; if ( dump_mode ) user . init_flags |= GF_TERM_USE_AUDIO_HW_CLOCK ; if ( bench_mode ) { gf_cfg_discard_changes ( user . config ) ; auto_exit = GF_TRUE ; gf_cfg_set_key ( user . config , \"Audio\" , \"DriverName\" , \"Raw<S2SV_blank>Audio<S2SV_blank>Output\" ) ; if ( bench_mode != 2 ) { gf_cfg_set_key ( user . config , \"Video\" , \"DriverName\" , \"Raw<S2SV_blank>Video<S2SV_blank>Output\" ) ; gf_cfg_set_key ( user . config , \"RAWVideo\" , \"RawOutput\" , \"null\" ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"OpenGLMode\" , \"disable\" ) ; } else { gf_cfg_set_key ( user . config , \"Video\" , \"DisableVSync\" , \"yes\" ) ; } } { char dim [ 50 ] ; sprintf ( dim , \"%d\" , forced_width ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"DefaultWidth\" , forced_width ? dim : NULL ) ; sprintf ( dim , \"%d\" , forced_height ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"DefaultHeight\" , forced_height ? dim : NULL ) ; } fprintf ( stderr , \"Loading<S2SV_blank>GPAC<S2SV_blank>Terminal\\\\n\" ) ; i = gf_sys_clock ( ) ; term = gf_term_new ( & user ) ; if ( ! term ) { fprintf ( stderr , \"\\\\nInit<S2SV_blank>error<S2SV_blank>-<S2SV_blank>check<S2SV_blank>you<S2SV_blank>have<S2SV_blank>at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>video<S2SV_blank>out<S2SV_blank>and<S2SV_blank>one<S2SV_blank>rasterizer...\\\\nFound<S2SV_blank>modules:\\\\n\" ) ; list_modules ( user . modules ) ; gf_modules_del ( user . modules ) ; gf_cfg_discard_changes ( cfg_file ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } fprintf ( stderr , \"Terminal<S2SV_blank>Loaded<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>ms\\\\n\" , gf_sys_clock ( ) - i ) ; if ( bench_mode ) { display_rti = 2 ; gf_term_set_option ( term , GF_OPT_VIDEO_BENCH , ( bench_mode == 3 ) ? 2 : 1 ) ; if ( bench_mode == 1 ) bench_mode = 2 ; } if ( dump_mode ) { if ( fill_ar ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_FILL_SCREEN ) ; } else { str = gf_cfg_get_key ( cfg_file , \"Video\" , \"DriverName\" ) ; if ( ! bench_mode && ! strcmp ( str , \"Raw<S2SV_blank>Video<S2SV_blank>Output\" ) ) fprintf ( stderr , \"WARNING:<S2SV_blank>using<S2SV_blank>raw<S2SV_blank>output<S2SV_blank>video<S2SV_blank>(memory<S2SV_blank>only)<S2SV_blank>-<S2SV_blank>no<S2SV_blank>display<S2SV_blank>used\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"Audio\" , \"DriverName\" ) ; if ( ! str || ! strcmp ( str , \"No<S2SV_blank>Audio<S2SV_blank>Output<S2SV_blank>Available\" ) ) fprintf ( stderr , \"WARNING:<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>output<S2SV_blank>available<S2SV_blank>-<S2SV_blank>make<S2SV_blank>sure<S2SV_blank>no<S2SV_blank>other<S2SV_blank>program<S2SV_blank>is<S2SV_blank>locking<S2SV_blank>the<S2SV_blank>sound<S2SV_blank>card\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"NoMIMETypeFetch\" ) ; no_mime_check = ( str && ! stricmp ( str , \"yes\" ) ) ? 1 : 0 ; } str = gf_cfg_get_key ( cfg_file , \"HTTPProxy\" , \"Enabled\" ) ; if ( str && ! strcmp ( str , \"yes\" ) ) { str = gf_cfg_get_key ( cfg_file , \"HTTPProxy\" , \"Name\" ) ; if ( str ) fprintf ( stderr , \"HTTP<S2SV_blank>Proxy<S2SV_blank>%s<S2SV_blank>enabled\\\\n\" , str ) ; } if ( rti_file ) { str = gf_cfg_get_key ( cfg_file , \"General\" , \"RTIRefreshPeriod\" ) ; if ( str ) { rti_update_time_ms = atoi ( str ) ; } else { gf_cfg_set_key ( cfg_file , \"General\" , \"RTIRefreshPeriod\" , \"200\" ) ; } UpdateRTInfo ( \"At<S2SV_blank>GPAC<S2SV_blank>load<S2SV_blank>time\\\\n\" ) ; } Run = 1 ; if ( dump_mode ) { if ( ! nb_times ) { times [ 0 ] = 0 ; nb_times ++ ; } ret_val = dump_file ( url_arg , out_arg , dump_mode , fps , forced_width , forced_height , scale , times , nb_times ) ; Run = 0 ; } else if ( views ) { } else if ( ! gui_mode && url_arg ) { char * ext ; if ( strlen ( url_arg ) >= sizeof ( the_url ) ) { fprintf ( stderr , \"Input<S2SV_blank>url<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long,<S2SV_blank>truncating<S2SV_blank>to<S2SV_blank>%d<S2SV_blank>chars.\\\\n\" , url_arg , ( int ) ( sizeof ( the_url ) - 1 ) ) ; strncpy ( the_url , url_arg , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_url ) - 1 ] = 0 ; } else { strcpy ( the_url , url_arg ) ; } ext = strrchr ( the_url , '.' ) ; if ( ext && ( ! stricmp ( ext , \".m3u\" ) || ! stricmp ( ext , \".pls\" ) ) ) { GF_Err e = GF_OK ; fprintf ( stderr , \"Opening<S2SV_blank>Playlist<S2SV_blank>%s\\\\n\" , the_url ) ; strcpy ( pl_path , the_url ) ; if ( ! strncmp ( \"http:\" , the_url , 5 ) ) { GF_DownloadSession * sess = gf_dm_sess_new ( term -> downloader , the_url , GF_NETIO_SESSION_NOT_THREADED , NULL , NULL , & e ) ; if ( sess ) { e = gf_dm_sess_process ( sess ) ; if ( ! e ) { strncpy ( the_url , gf_dm_sess_get_cache_name ( sess ) , sizeof ( the_url ) - 1 ) ; <S2SV_StartBug> the_url [ sizeof ( the_cfg ) - 1 ] = 0 ; <S2SV_EndBug> } gf_dm_sess_del ( sess ) ; } } playlist = e ? NULL : gf_fopen ( the_url , \"rt\" ) ; readonly_playlist = 1 ; if ( playlist ) { request_next_playlist_item = GF_TRUE ; } else { if ( e ) fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>playlist<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , the_url , gf_error_to_string ( e ) ) ; fprintf ( stderr , \"Hit<S2SV_blank>\\'h\\'<S2SV_blank>for<S2SV_blank>help\\\\n\\\\n\" ) ; } } else { fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; if ( pause_at_first ) fprintf ( stderr , \"[Status:<S2SV_blank>Paused]\\\\n\" ) ; gf_term_connect_from_time ( term , the_url , ( u64 ) ( play_from * 1000 ) , pause_at_first ) ; } } else { fprintf ( stderr , \"Hit<S2SV_blank>\\'h\\'<S2SV_blank>for<S2SV_blank>help\\\\n\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) ; if ( str ) { strncpy ( the_url , \"MP4Client<S2SV_blank>\" GPAC_FULL_VERSION , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_url ) - 1 ] = 0 ; gf_term_connect ( term , str ) ; startup_file = 1 ; is_connected = 1 ; } } if ( gui_mode == 2 ) gui_mode = 0 ; if ( start_fs ) gf_term_set_option ( term , GF_OPT_FULLSCREEN , 1 ) ; if ( views ) { char szTemp [ 4046 ] ; sprintf ( szTemp , \"views://%s\" , views ) ; gf_term_connect ( term , szTemp ) ; } if ( mosaic ) { char szTemp [ 4046 ] ; sprintf ( szTemp , \"mosaic://%s\" , mosaic ) ; gf_term_connect ( term , szTemp ) ; } if ( bench_mode ) { rti_update_time_ms = 500 ; bench_mode_start = gf_sys_clock ( ) ; } while ( Run ) { if ( ( gui_mode == 1 ) || ! gf_prompt_has_input ( ) ) { if ( reload ) { reload = 0 ; gf_term_disconnect ( term ) ; gf_term_connect ( term , startup_file ? gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) : the_url ) ; } if ( restart && gf_term_get_option ( term , GF_OPT_IS_OVER ) ) { restart = 0 ; gf_term_play_from_time ( term , 0 , 0 ) ; } if ( request_next_playlist_item ) { c = '\\\\n' ; request_next_playlist_item = 0 ; goto force_input ; } if ( has_command && is_connected ) { has_command = GF_FALSE ; for ( i = 0 ; i < ( u32 ) argc ; i ++ ) { if ( ! strcmp ( argv [ i ] , \"-com\" ) ) { gf_term_scene_update ( term , NULL , argv [ i + 1 ] ) ; i ++ ; } } } if ( initial_service_id && is_connected ) { GF_ObjectManager * root_od = gf_term_get_root_object ( term ) ; if ( root_od ) { gf_term_select_service ( term , root_od , initial_service_id ) ; initial_service_id = 0 ; } } if ( ! use_rtix || display_rti ) UpdateRTInfo ( NULL ) ; if ( term_step ) { gf_term_process_step ( term ) ; } else { gf_sleep ( rti_update_time_ms ) ; } if ( auto_exit && eos_seen && gf_term_get_option ( term , GF_OPT_IS_OVER ) ) { Run = GF_FALSE ; } if ( simulation_time_in_ms && ( ( gf_term_get_elapsed_time_in_ms ( term ) > simulation_time_in_ms ) || ( ! url_arg && gf_sys_clock ( ) > simulation_time_in_ms ) ) ) { Run = GF_FALSE ; } continue ; } c = gf_prompt_get_char ( ) ; force_input : switch ( c ) { case 'q' : { GF_Event evt ; memset ( & evt , 0 , sizeof ( GF_Event ) ) ; evt . type = GF_EVENT_QUIT ; gf_term_send_event ( term , & evt ) ; } break ; case 'X' : exit ( 0 ) ; break ; case 'Q' : break ; case 'o' : startup_file = 0 ; gf_term_disconnect ( term ) ; fprintf ( stderr , \"Enter<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL\\\\n\" ) ; if ( 1 > scanf ( \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>absolute<S2SV_blank>URL,<S2SV_blank>aborting\\\\n\" ) ; break ; } if ( rti_file ) init_rti_logs ( rti_file , the_url , use_rtix ) ; gf_term_connect ( term , the_url ) ; break ; case 'O' : gf_term_disconnect ( term ) ; fprintf ( stderr , \"Enter<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL<S2SV_blank>to<S2SV_blank>the<S2SV_blank>playlist\\\\n\" ) ; if ( 1 > scanf ( \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL,<S2SV_blank>aborting.\\\\n\" ) ; break ; } playlist = gf_fopen ( the_url , \"rt\" ) ; if ( playlist ) { if ( 1 > fscanf ( playlist , \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>any<S2SV_blank>URL<S2SV_blank>from<S2SV_blank>playlist,<S2SV_blank>aborting.\\\\n\" ) ; gf_fclose ( playlist ) ; break ; } fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect ( term , the_url ) ; } break ; case '\\\\n' : case 'N' : if ( playlist ) { int res ; gf_term_disconnect ( term ) ; res = fscanf ( playlist , \"%s\" , the_url ) ; if ( ( res == EOF ) && loop_at_end ) { fseek ( playlist , 0 , SEEK_SET ) ; res = fscanf ( playlist , \"%s\" , the_url ) ; } if ( res == EOF ) { fprintf ( stderr , \"No<S2SV_blank>more<S2SV_blank>items<S2SV_blank>-<S2SV_blank>exiting\\\\n\" ) ; Run = 0 ; } else if ( the_url [ 0 ] == '#' ) { request_next_playlist_item = GF_TRUE ; } else { fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect_with_path ( term , the_url , pl_path ) ; } } break ; case 'P' : if ( playlist ) { u32 count ; gf_term_disconnect ( term ) ; if ( 1 > scanf ( \"%u\" , & count ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>number,<S2SV_blank>aborting.\\\\n\" ) ; break ; } while ( count ) { if ( fscanf ( playlist , \"%s\" , the_url ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>line,<S2SV_blank>aborting\\\\n\" ) ; break ; } count -- ; } fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect ( term , the_url ) ; } break ; case 'r' : if ( is_connected ) reload = 1 ; break ; case 'D' : if ( is_connected ) gf_term_disconnect ( term ) ; break ; case 'p' : if ( is_connected ) { Bool is_pause = gf_term_get_option ( term , GF_OPT_PLAY_STATE ) ; fprintf ( stderr , \"[Status:<S2SV_blank>%s]\\\\n\" , is_pause ? \"Playing\" : \"Paused\" ) ; gf_term_set_option ( term , GF_OPT_PLAY_STATE , is_pause ? GF_STATE_PLAYING : GF_STATE_PAUSED ) ; } break ; case 's' : if ( is_connected ) { gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_STEP_PAUSE ) ; fprintf ( stderr , \"Step<S2SV_blank>time:<S2SV_blank>\" ) ; PrintTime ( gf_term_get_time_in_ms ( term ) ) ; fprintf ( stderr , \"\\\\n\" ) ; } break ; case 'z' : case 'T' : if ( ! CanSeek || ( Duration <= 2000 ) ) { fprintf ( stderr , \"scene<S2SV_blank>not<S2SV_blank>seekable\\\\n\" ) ; } else { Double res ; s32 seekTo ; fprintf ( stderr , \"Duration:<S2SV_blank>\" ) ; PrintTime ( Duration ) ; res = gf_term_get_time_in_ms ( term ) ; if ( c == 'z' ) { res *= 100 ; res /= ( s64 ) Duration ; fprintf ( stderr , \"<S2SV_blank>(current<S2SV_blank>%.2f<S2SV_blank>%%)\\\\nEnter<S2SV_blank>Seek<S2SV_blank>percentage:\\\\n\" , res ) ; if ( scanf ( \"%d\" , & seekTo ) == 1 ) { if ( seekTo > 100 ) seekTo = 100 ; res = ( Double ) ( s64 ) Duration ; res /= 100 ; res *= seekTo ; gf_term_play_from_time ( term , ( u64 ) ( s64 ) res , 0 ) ; } } else { u32 r , h , m , s ; fprintf ( stderr , \"<S2SV_blank>-<S2SV_blank>Current<S2SV_blank>Time:<S2SV_blank>\" ) ; PrintTime ( ( u64 ) res ) ; fprintf ( stderr , \"\\\\nEnter<S2SV_blank>seek<S2SV_blank>time<S2SV_blank>(Format:<S2SV_blank>s,<S2SV_blank>m:s<S2SV_blank>or<S2SV_blank>h:m:s):\\\\n\" ) ; h = m = s = 0 ; r = scanf ( \"%d:%d:%d\" , & h , & m , & s ) ; if ( r == 2 ) { s = m ; m = h ; h = 0 ; } else if ( r == 1 ) { s = h ; m = h = 0 ; } if ( r && ( r <= 3 ) ) { u64 time = h * 3600 + m * 60 + s ; gf_term_play_from_time ( term , time * 1000 , 0 ) ; } } } break ; case 't' : { if ( is_connected ) { fprintf ( stderr , \"Current<S2SV_blank>Time:<S2SV_blank>\" ) ; PrintTime ( gf_term_get_time_in_ms ( term ) ) ; fprintf ( stderr , \"<S2SV_blank>-<S2SV_blank>Duration:<S2SV_blank>\" ) ; PrintTime ( Duration ) ; fprintf ( stderr , \"\\\\n\" ) ; } } break ; case 'w' : if ( is_connected ) PrintWorldInfo ( term ) ; break ; case 'v' : if ( is_connected ) PrintODList ( term , NULL , 0 , 0 , \"Root\" ) ; break ; case 'i' : if ( is_connected ) { u32 ID ; fprintf ( stderr , \"Enter<S2SV_blank>OD<S2SV_blank>ID<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>main<S2SV_blank>OD):<S2SV_blank>\" ) ; fflush ( stderr ) ; if ( scanf ( \"%ud\" , & ID ) == 1 ) { ViewOD ( term , ID , ( u32 ) - 1 , NULL ) ; } else { char str_url [ GF_MAX_PATH ] ; if ( scanf ( \"%s\" , str_url ) == 1 ) ViewOD ( term , 0 , ( u32 ) - 1 , str_url ) ; } } break ; case 'j' : if ( is_connected ) { u32 num ; do { fprintf ( stderr , \"Enter<S2SV_blank>OD<S2SV_blank>number<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>main<S2SV_blank>OD):<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%ud\" , & num ) ) ; ViewOD ( term , ( u32 ) - 1 , num , NULL ) ; } break ; case 'b' : if ( is_connected ) ViewODs ( term , 1 ) ; break ; case 'm' : if ( is_connected ) ViewODs ( term , 0 ) ; break ; case 'l' : list_modules ( user . modules ) ; break ; case 'n' : if ( is_connected ) set_navigation ( ) ; break ; case 'x' : if ( is_connected ) gf_term_set_option ( term , GF_OPT_NAVIGATION_TYPE , 0 ) ; break ; case 'd' : if ( is_connected ) { GF_ObjectManager * odm = NULL ; char radname [ GF_MAX_PATH ] , * sExt ; GF_Err e ; u32 i , count , odid ; Bool xml_dump , std_out ; radname [ 0 ] = 0 ; do { fprintf ( stderr , \"Enter<S2SV_blank>Inline<S2SV_blank>OD<S2SV_blank>ID<S2SV_blank>if<S2SV_blank>any<S2SV_blank>or<S2SV_blank>0<S2SV_blank>:<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%ud\" , & odid ) ) ; if ( odid ) { GF_ObjectManager * root_odm = gf_term_get_root_object ( term ) ; if ( ! root_odm ) break ; count = gf_term_get_object_count ( term , root_odm ) ; for ( i = 0 ; i < count ; i ++ ) { GF_MediaInfo info ; odm = gf_term_get_object ( term , root_odm , i ) ; if ( gf_term_get_object_info ( term , odm , & info ) == GF_OK ) { if ( info . od -> objectDescriptorID == odid ) break ; } odm = NULL ; } } do { fprintf ( stderr , \"Enter<S2SV_blank>file<S2SV_blank>radical<S2SV_blank>name<S2SV_blank>(+\\\\\\'.x\\\\\\'<S2SV_blank>for<S2SV_blank>XML<S2SV_blank>dumping)<S2SV_blank>-<S2SV_blank>\\\\\"std\\\\\"<S2SV_blank>for<S2SV_blank>stderr:<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%s\" , radname ) ) ; sExt = strrchr ( radname , '.' ) ; xml_dump = 0 ; if ( sExt ) { if ( ! stricmp ( sExt , \".x\" ) ) xml_dump = 1 ; sExt [ 0 ] = 0 ; } std_out = strnicmp ( radname , \"std\" , 3 ) ? 0 : 1 ; e = gf_term_dump_scene ( term , std_out ? NULL : radname , NULL , xml_dump , 0 , odm ) ; fprintf ( stderr , \"Dump<S2SV_blank>done<S2SV_blank>(%s)\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'c' : PrintGPACConfig ( ) ; break ; case '3' : { Bool use_3d = ! gf_term_get_option ( term , GF_OPT_USE_OPENGL ) ; if ( gf_term_set_option ( term , GF_OPT_USE_OPENGL , use_3d ) == GF_OK ) { fprintf ( stderr , \"Using<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>2D<S2SV_blank>drawing\\\\n\" , use_3d ? \"OpenGL\" : \"2D<S2SV_blank>rasterizer\" ) ; } } break ; case 'k' : { Bool opt = gf_term_get_option ( term , GF_OPT_STRESS_MODE ) ; opt = ! opt ; fprintf ( stderr , \"Turning<S2SV_blank>stress<S2SV_blank>mode<S2SV_blank>%s\\\\n\" , opt ? \"on\" : \"off\" ) ; gf_term_set_option ( term , GF_OPT_STRESS_MODE , opt ) ; } break ; case '4' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_4_3 ) ; break ; case '5' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_16_9 ) ; break ; case '6' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_FILL_SCREEN ) ; break ; case '7' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_KEEP ) ; break ; case 'C' : switch ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) ) { case GF_MEDIA_CACHE_DISABLED : gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , GF_MEDIA_CACHE_ENABLED ) ; break ; case GF_MEDIA_CACHE_ENABLED : gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , GF_MEDIA_CACHE_DISABLED ) ; break ; case GF_MEDIA_CACHE_RUNNING : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>is<S2SV_blank>running<S2SV_blank>-<S2SV_blank>please<S2SV_blank>stop<S2SV_blank>it<S2SV_blank>first\\\\n\" ) ; continue ; } switch ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) ) { case GF_MEDIA_CACHE_ENABLED : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Enabled\\\\n\" ) ; break ; case GF_MEDIA_CACHE_DISABLED : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Disabled\\\\n\" ) ; break ; case GF_MEDIA_CACHE_RUNNING : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Running\\\\n\" ) ; break ; } break ; case 'S' : case 'A' : if ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) == GF_MEDIA_CACHE_RUNNING ) { gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , ( c == 'S' ) ? GF_MEDIA_CACHE_DISABLED : GF_MEDIA_CACHE_DISCARD ) ; fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>stopped\\\\n\" ) ; } else { fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>not<S2SV_blank>running\\\\n\" ) ; } break ; case 'R' : display_rti = ! display_rti ; ResetCaption ( ) ; break ; case 'F' : if ( display_rti ) display_rti = 0 ; else display_rti = 2 ; ResetCaption ( ) ; break ; case 'u' : { GF_Err e ; char szCom [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>command<S2SV_blank>to<S2SV_blank>send:\\\\n\" ) ; fflush ( stdin ) ; szCom [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szCom ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>command<S2SV_blank>to<S2SV_blank>send,<S2SV_blank>aborting.\\\\n\" ) ; break ; } e = gf_term_scene_update ( term , NULL , szCom ) ; if ( e ) fprintf ( stderr , \"Processing<S2SV_blank>command<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'e' : { GF_Err e ; char jsCode [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>JavaScript<S2SV_blank>code<S2SV_blank>to<S2SV_blank>evaluate:\\\\n\" ) ; fflush ( stdin ) ; jsCode [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , jsCode ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>code<S2SV_blank>to<S2SV_blank>evaluate,<S2SV_blank>aborting.\\\\n\" ) ; break ; } e = gf_term_scene_update ( term , \"application/ecmascript\" , jsCode ) ; if ( e ) fprintf ( stderr , \"Processing<S2SV_blank>JS<S2SV_blank>code<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'L' : { char szLog [ 1024 ] , * cur_logs ; cur_logs = gf_log_get_tools_levels ( ) ; fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>log<S2SV_blank>level<S2SV_blank>(current<S2SV_blank>tools<S2SV_blank>%s):\\\\n\" , cur_logs ) ; gf_free ( cur_logs ) ; if ( scanf ( \"%s\" , szLog ) < 1 ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>new<S2SV_blank>log<S2SV_blank>level,<S2SV_blank>aborting.\\\\n\" ) ; break ; } gf_log_modify_tools_levels ( szLog ) ; } break ; case 'g' : { GF_SystemRTInfo rti ; gf_sys_get_rti ( rti_update_time_ms , & rti , 0 ) ; fprintf ( stderr , \"GPAC<S2SV_blank>allocated<S2SV_blank>memory<S2SV_blank>\" LLD \"\\\\n\" , rti . gpac_memory ) ; } break ; case 'M' : { u32 size ; do { fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>video<S2SV_blank>cache<S2SV_blank>memory<S2SV_blank>in<S2SV_blank>kBytes<S2SV_blank>(current<S2SV_blank>%ud):\\\\n\" , gf_term_get_option ( term , GF_OPT_VIDEO_CACHE_SIZE ) ) ; } while ( 1 > scanf ( \"%ud\" , & size ) ) ; gf_term_set_option ( term , GF_OPT_VIDEO_CACHE_SIZE , size ) ; } break ; case 'H' : { u32 http_bitrate = gf_term_get_option ( term , GF_OPT_HTTP_MAX_RATE ) ; do { fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>http<S2SV_blank>bitrate<S2SV_blank>in<S2SV_blank>bps<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>none)<S2SV_blank>-<S2SV_blank>current<S2SV_blank>limit:<S2SV_blank>%d\\\\n\" , http_bitrate ) ; } while ( 1 > scanf ( \"%ud\" , & http_bitrate ) ) ; gf_term_set_option ( term , GF_OPT_HTTP_MAX_RATE , http_bitrate ) ; } break ; case 'E' : gf_term_set_option ( term , GF_OPT_RELOAD_CONFIG , 1 ) ; break ; case 'B' : switch_bench ( ! bench_mode ) ; break ; case 'Y' : { char szOpt [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>option<S2SV_blank>to<S2SV_blank>set<S2SV_blank>(Section:Name=Value):\\\\n\" ) ; fflush ( stdin ) ; szOpt [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szOpt ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>option\\\\n\" ) ; break ; } set_cfg_option ( szOpt ) ; } break ; case 'Z' : { char szFileName [ 100 ] ; u32 nb_pass , nb_views , offscreen_view = 0 ; GF_VideoSurface fb ; GF_Err e ; nb_pass = 1 ; nb_views = gf_term_get_option ( term , GF_OPT_NUM_STEREO_VIEWS ) ; if ( nb_views > 1 ) { fprintf ( stderr , \"Auto-stereo<S2SV_blank>mode<S2SV_blank>detected<S2SV_blank>-<S2SV_blank>type<S2SV_blank>number<S2SV_blank>of<S2SV_blank>view<S2SV_blank>to<S2SV_blank>dump<S2SV_blank>(0<S2SV_blank>is<S2SV_blank>main<S2SV_blank>output,<S2SV_blank>1<S2SV_blank>to<S2SV_blank>%d<S2SV_blank>offscreen<S2SV_blank>view,<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>all<S2SV_blank>offscreen,<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>all<S2SV_blank>offscreen<S2SV_blank>and<S2SV_blank>main)\\\\n\" , nb_views , nb_views + 1 , nb_views + 2 ) ; if ( scanf ( \"%d\" , & offscreen_view ) != 1 ) { offscreen_view = 0 ; } if ( offscreen_view == nb_views + 1 ) { offscreen_view = 1 ; nb_pass = nb_views ; } else if ( offscreen_view == nb_views + 2 ) { offscreen_view = 0 ; nb_pass = nb_views + 1 ; } } while ( nb_pass ) { nb_pass -- ; if ( offscreen_view ) { sprintf ( szFileName , \"view%d_dump.png\" , offscreen_view ) ; e = gf_term_get_offscreen_buffer ( term , & fb , offscreen_view - 1 , 0 ) ; } else { sprintf ( szFileName , \"gpac_video_dump_\" LLU \".png\" , gf_net_get_utc ( ) ) ; e = gf_term_get_screen_buffer ( term , & fb ) ; } offscreen_view ++ ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>dumping<S2SV_blank>screen<S2SV_blank>buffer<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; nb_pass = 0 ; } else { # ifndef GPAC_DISABLE_AV_PARSERS u32 dst_size = fb . width * fb . height * 4 ; char * dst = ( char * ) gf_malloc ( sizeof ( char ) * dst_size ) ; e = gf_img_png_enc ( fb . video_buffer , fb . width , fb . height , fb . pitch_y , fb . pixel_format , dst , & dst_size ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>encoding<S2SV_blank>PNG<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; nb_pass = 0 ; } else { FILE * png = gf_fopen ( szFileName , \"wb\" ) ; if ( ! png ) { fprintf ( stderr , \"Error<S2SV_blank>writing<S2SV_blank>file<S2SV_blank>%s\\\\n\" , szFileName ) ; nb_pass = 0 ; } else { gf_fwrite ( dst , dst_size , 1 , png ) ; gf_fclose ( png ) ; fprintf ( stderr , \"Dump<S2SV_blank>to<S2SV_blank>%s\\\\n\" , szFileName ) ; } } if ( dst ) gf_free ( dst ) ; gf_term_release_screen_buffer ( term , & fb ) ; # endif } } fprintf ( stderr , \"Done:<S2SV_blank>%s\\\\n\" , szFileName ) ; } break ; case 'G' : { GF_ObjectManager * root_od , * odm ; u32 index ; char szOpt [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>0-based<S2SV_blank>index<S2SV_blank>of<S2SV_blank>object<S2SV_blank>to<S2SV_blank>select<S2SV_blank>or<S2SV_blank>service<S2SV_blank>ID:\\\\n\" ) ; fflush ( stdin ) ; szOpt [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szOpt ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>OD<S2SV_blank>ID\\\\n\" ) ; break ; } index = atoi ( szOpt ) ; odm = NULL ; root_od = gf_term_get_root_object ( term ) ; if ( root_od ) { if ( gf_term_find_service ( term , root_od , index ) ) { gf_term_select_service ( term , root_od , index ) ; } else { fprintf ( stderr , \"Cannot<S2SV_blank>find<S2SV_blank>service<S2SV_blank>%d<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>with<S2SV_blank>object<S2SV_blank>index\\\\n\" , index ) ; odm = gf_term_get_object ( term , root_od , index ) ; if ( odm ) { gf_term_select_object ( term , odm ) ; } else { fprintf ( stderr , \"Cannot<S2SV_blank>find<S2SV_blank>object<S2SV_blank>at<S2SV_blank>index<S2SV_blank>%d\\\\n\" , index ) ; } } } } break ; case 'h' : PrintHelp ( ) ; break ; default : break ; } } if ( bench_mode ) { PrintAVInfo ( GF_TRUE ) ; } if ( simulation_time_in_ms ) { gf_log_set_strict_error ( 0 ) ; } i = gf_sys_clock ( ) ; gf_term_disconnect ( term ) ; if ( rti_file ) UpdateRTInfo ( \"Disconnected\\\\n\" ) ; fprintf ( stderr , \"Deleting<S2SV_blank>terminal...<S2SV_blank>\" ) ; if ( playlist ) gf_fclose ( playlist ) ; # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) carbon_uninit ( ) ; # endif gf_term_del ( term ) ; fprintf ( stderr , \"done<S2SV_blank>(in<S2SV_blank>%d<S2SV_blank>ms)<S2SV_blank>-<S2SV_blank>ran<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>ms\\\\n\" , gf_sys_clock ( ) - i , gf_sys_clock ( ) ) ; fprintf ( stderr , \"GPAC<S2SV_blank>cleanup<S2SV_blank>...\\\\n\" ) ; gf_modules_del ( user . modules ) ; if ( no_cfg_save ) gf_cfg_discard_changes ( cfg_file ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( rti_logs ) gf_fclose ( rti_logs ) ; if ( logfile ) gf_fclose ( logfile ) ; if ( gui_mode ) { hide_shell ( 2 ) ; } # ifdef GPAC_MEMORY_TRACKING if ( mem_track && ( gf_memory_size ( ) || gf_file_handles_count ( ) ) ) { gf_log_set_tool_level ( GF_LOG_MEMORY , GF_LOG_INFO ) ; gf_memory_print ( ) ; return 2 ; } # endif return ret_val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ sizeof ( the_url <S2SV_ModEnd> ) - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2739\n\n```\nCWE-20 static int cma_req_handler ( struct ib_cm_id * cm_id , struct ib_cm_event * ib_event ) { struct rdma_id_private * listen_id , * conn_id ; struct rdma_cm_event event ; int offset , ret ; <S2SV_StartBug> u8 smac [ ETH_ALEN ] ; <S2SV_EndBug> u8 alt_smac [ ETH_ALEN ] ; u8 * psmac = smac ; u8 * palt_smac = alt_smac ; int is_iboe = ( ( rdma_node_get_transport ( cm_id -> device -> node_type ) == RDMA_TRANSPORT_IB ) && ( rdma_port_get_link_layer ( cm_id -> device , ib_event -> param . req_rcvd . port ) == IB_LINK_LAYER_ETHERNET ) ) ; listen_id = cm_id -> context ; if ( ! cma_check_req_qp_type ( & listen_id -> id , ib_event ) ) return - EINVAL ; if ( cma_disable_callback ( listen_id , RDMA_CM_LISTEN ) ) return - ECONNABORTED ; memset ( & event , 0 , sizeof event ) ; offset = cma_user_data_offset ( listen_id ) ; event . event = RDMA_CM_EVENT_CONNECT_REQUEST ; if ( ib_event -> event == IB_CM_SIDR_REQ_RECEIVED ) { conn_id = cma_new_udp_id ( & listen_id -> id , ib_event ) ; event . param . ud . private_data = ib_event -> private_data + offset ; event . param . ud . private_data_len = IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset ; } else { conn_id = cma_new_conn_id ( & listen_id -> id , ib_event ) ; cma_set_req_event_data ( & event , & ib_event -> param . req_rcvd , ib_event -> private_data , offset ) ; } if ( ! conn_id ) { ret = - ENOMEM ; goto err1 ; } mutex_lock_nested ( & conn_id -> handler_mutex , SINGLE_DEPTH_NESTING ) ; ret = cma_acquire_dev ( conn_id , listen_id ) ; if ( ret ) goto err2 ; conn_id -> cm_id . ib = cm_id ; cm_id -> context = conn_id ; cm_id -> cm_handler = cma_ib_handler ; atomic_inc ( & conn_id -> refcount ) ; ret = conn_id -> id . event_handler ( & conn_id -> id , & event ) ; if ( ret ) goto err3 ; <S2SV_StartBug> if ( is_iboe ) { <S2SV_EndBug> if ( ib_event -> param . req_rcvd . primary_path != NULL ) rdma_addr_find_smac_by_sgid ( & ib_event -> param . req_rcvd . primary_path -> sgid , psmac , NULL ) ; else psmac = NULL ; if ( ib_event -> param . req_rcvd . alternate_path != NULL ) rdma_addr_find_smac_by_sgid ( & ib_event -> param . req_rcvd . alternate_path -> sgid , palt_smac , NULL ) ; else palt_smac = NULL ; } <S2SV_StartBug> mutex_lock ( & lock ) ; <S2SV_EndBug> if ( is_iboe ) ib_update_cm_av ( cm_id , psmac , palt_smac ) ; if ( cma_comp ( conn_id , RDMA_CM_CONNECT ) && ( conn_id -> id . qp_type != IB_QPT_UD ) ) ib_send_cm_mra ( cm_id , CMA_CM_MRA_SETTING , NULL , 0 ) ; mutex_unlock ( & lock ) ; mutex_unlock ( & conn_id -> handler_mutex ) ; mutex_unlock ( & listen_id -> handler_mutex ) ; cma_deref_id ( conn_id ) ; return 0 ; err3 : cma_deref_id ( conn_id ) ; conn_id -> cm_id . ib = NULL ; err2 : cma_exch ( conn_id , RDMA_CM_DESTROYING ) ; mutex_unlock ( & conn_id -> handler_mutex ) ; err1 : mutex_unlock ( & listen_id -> handler_mutex ) ; if ( conn_id ) rdma_destroy_id ( & conn_id -> id ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , ret ; <S2SV_ModEnd> listen_id = cm_id <S2SV_ModStart> goto err3 ; <S2SV_ModEnd> mutex_lock ( & <S2SV_ModStart> ( & lock <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13715\n\n```\nCWE-20 bool __skb_flow_dissect ( const struct sk_buff * skb , struct flow_dissector * flow_dissector , void * target_container , void * data , __be16 proto , int nhoff , int hlen ) { struct flow_dissector_key_control * key_control ; struct flow_dissector_key_basic * key_basic ; struct flow_dissector_key_addrs * key_addrs ; struct flow_dissector_key_ports * key_ports ; struct flow_dissector_key_tags * key_tags ; struct flow_dissector_key_keyid * key_keyid ; <S2SV_StartBug> u8 ip_proto = 0 ; <S2SV_EndBug> if ( ! data ) { data = skb -> data ; proto = skb -> protocol ; nhoff = skb_network_offset ( skb ) ; hlen = skb_headlen ( skb ) ; } key_control = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_CONTROL , target_container ) ; key_basic = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_BASIC , target_container ) ; if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_ETH_ADDRS ) ) { struct ethhdr * eth = eth_hdr ( skb ) ; struct flow_dissector_key_eth_addrs * key_eth_addrs ; key_eth_addrs = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_ETH_ADDRS , target_container ) ; memcpy ( key_eth_addrs , & eth -> h_dest , sizeof ( * key_eth_addrs ) ) ; } again : switch ( proto ) { case htons ( ETH_P_IP ) : { const struct iphdr * iph ; struct iphdr _iph ; ip : iph = __skb_header_pointer ( skb , nhoff , sizeof ( _iph ) , data , hlen , & _iph ) ; if ( ! iph || iph -> ihl < 5 ) <S2SV_StartBug> return false ; <S2SV_EndBug> nhoff += iph -> ihl * 4 ; ip_proto = iph -> protocol ; if ( ip_is_fragment ( iph ) ) ip_proto = 0 ; if ( ! skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_IPV4_ADDRS ) ) break ; key_addrs = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_IPV4_ADDRS , target_container ) ; memcpy ( & key_addrs -> v4addrs , & iph -> saddr , sizeof ( key_addrs -> v4addrs ) ) ; key_control -> addr_type = FLOW_DISSECTOR_KEY_IPV4_ADDRS ; break ; } case htons ( ETH_P_IPV6 ) : { const struct ipv6hdr * iph ; struct ipv6hdr _iph ; __be32 flow_label ; ipv6 : iph = __skb_header_pointer ( skb , nhoff , sizeof ( _iph ) , data , hlen , & _iph ) ; if ( ! iph ) <S2SV_StartBug> return false ; <S2SV_EndBug> ip_proto = iph -> nexthdr ; nhoff += sizeof ( struct ipv6hdr ) ; if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_IPV6_ADDRS ) ) { struct flow_dissector_key_ipv6_addrs * key_ipv6_addrs ; key_ipv6_addrs = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_IPV6_ADDRS , target_container ) ; memcpy ( key_ipv6_addrs , & iph -> saddr , sizeof ( * key_ipv6_addrs ) ) ; key_control -> addr_type = FLOW_DISSECTOR_KEY_IPV6_ADDRS ; } flow_label = ip6_flowlabel ( iph ) ; if ( flow_label ) { if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_FLOW_LABEL ) ) { key_tags = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_FLOW_LABEL , target_container ) ; key_tags -> flow_label = ntohl ( flow_label ) ; } } break ; } case htons ( ETH_P_8021AD ) : case htons ( ETH_P_8021Q ) : { const struct vlan_hdr * vlan ; struct vlan_hdr _vlan ; vlan = __skb_header_pointer ( skb , nhoff , sizeof ( _vlan ) , data , hlen , & _vlan ) ; if ( ! vlan ) <S2SV_StartBug> return false ; <S2SV_EndBug> if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_VLANID ) ) { key_tags = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_VLANID , target_container ) ; key_tags -> vlan_id = skb_vlan_tag_get_id ( skb ) ; } proto = vlan -> h_vlan_encapsulated_proto ; nhoff += sizeof ( * vlan ) ; goto again ; } case htons ( ETH_P_PPP_SES ) : { struct { struct pppoe_hdr hdr ; __be16 proto ; } * hdr , _hdr ; hdr = __skb_header_pointer ( skb , nhoff , sizeof ( _hdr ) , data , hlen , & _hdr ) ; if ( ! hdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> proto = hdr -> proto ; nhoff += PPPOE_SES_HLEN ; switch ( proto ) { case htons ( PPP_IP ) : goto ip ; case htons ( PPP_IPV6 ) : goto ipv6 ; default : <S2SV_StartBug> return false ; <S2SV_EndBug> } } case htons ( ETH_P_TIPC ) : { struct { __be32 pre [ 3 ] ; __be32 srcnode ; } * hdr , _hdr ; hdr = __skb_header_pointer ( skb , nhoff , sizeof ( _hdr ) , data , hlen , & _hdr ) ; if ( ! hdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> key_basic -> n_proto = proto ; key_control -> thoff = ( u16 ) nhoff ; if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_TIPC_ADDRS ) ) { key_addrs = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_TIPC_ADDRS , target_container ) ; key_addrs -> tipcaddrs . srcnode = hdr -> srcnode ; key_control -> addr_type = FLOW_DISSECTOR_KEY_TIPC_ADDRS ; } <S2SV_StartBug> return true ; <S2SV_EndBug> } case htons ( ETH_P_MPLS_UC ) : case htons ( ETH_P_MPLS_MC ) : { struct mpls_label * hdr , _hdr [ 2 ] ; mpls : hdr = __skb_header_pointer ( skb , nhoff , sizeof ( _hdr ) , data , hlen , & _hdr ) ; if ( ! hdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> if ( ( ntohl ( hdr [ 0 ] . entry ) & MPLS_LS_LABEL_MASK ) >> MPLS_LS_LABEL_SHIFT == MPLS_LABEL_ENTROPY ) { if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_MPLS_ENTROPY ) ) { key_keyid = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_MPLS_ENTROPY , target_container ) ; key_keyid -> keyid = hdr [ 1 ] . entry & htonl ( MPLS_LS_LABEL_MASK ) ; } <S2SV_StartBug> key_basic -> n_proto = proto ; <S2SV_EndBug> key_basic -> ip_proto = ip_proto ; key_control -> thoff = ( u16 ) nhoff ; return true ; } return true ; } case htons ( ETH_P_FCOE ) : key_control -> thoff = ( u16 ) ( nhoff + FCOE_HEADER_LEN ) ; default : <S2SV_StartBug> return false ; <S2SV_EndBug> } ip_proto_again : switch ( ip_proto ) { case IPPROTO_GRE : { struct gre_hdr { __be16 flags ; __be16 proto ; } * hdr , _hdr ; hdr = __skb_header_pointer ( skb , nhoff , sizeof ( _hdr ) , data , hlen , & _hdr ) ; if ( ! hdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> if ( hdr -> flags & ( GRE_VERSION | GRE_ROUTING ) ) break ; proto = hdr -> proto ; nhoff += 4 ; if ( hdr -> flags & GRE_CSUM ) nhoff += 4 ; if ( hdr -> flags & GRE_KEY ) { const __be32 * keyid ; __be32 _keyid ; keyid = __skb_header_pointer ( skb , nhoff , sizeof ( _keyid ) , data , hlen , & _keyid ) ; if ( ! keyid ) <S2SV_StartBug> return false ; <S2SV_EndBug> if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_GRE_KEYID ) ) { key_keyid = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_GRE_KEYID , target_container ) ; key_keyid -> keyid = * keyid ; } nhoff += 4 ; } if ( hdr -> flags & GRE_SEQ ) nhoff += 4 ; if ( proto == htons ( ETH_P_TEB ) ) { const struct ethhdr * eth ; struct ethhdr _eth ; eth = __skb_header_pointer ( skb , nhoff , sizeof ( _eth ) , data , hlen , & _eth ) ; if ( ! eth ) <S2SV_StartBug> return false ; <S2SV_EndBug> proto = eth -> h_proto ; nhoff += sizeof ( * eth ) ; } goto again ; } case NEXTHDR_HOP : case NEXTHDR_ROUTING : case NEXTHDR_DEST : { u8 _opthdr [ 2 ] , * opthdr ; if ( proto != htons ( ETH_P_IPV6 ) ) break ; opthdr = __skb_header_pointer ( skb , nhoff , sizeof ( _opthdr ) , data , hlen , & _opthdr ) ; if ( ! opthdr ) <S2SV_StartBug> return false ; <S2SV_EndBug> ip_proto = opthdr [ 0 ] ; nhoff += ( opthdr [ 1 ] + 1 ) << 3 ; goto ip_proto_again ; } case IPPROTO_IPIP : proto = htons ( ETH_P_IP ) ; goto ip ; case IPPROTO_IPV6 : proto = htons ( ETH_P_IPV6 ) ; goto ipv6 ; case IPPROTO_MPLS : proto = htons ( ETH_P_MPLS_UC ) ; goto mpls ; default : break ; } <S2SV_StartBug> key_basic -> n_proto = proto ; <S2SV_EndBug> key_basic -> ip_proto = ip_proto ; key_control -> thoff = ( u16 ) nhoff ; <S2SV_StartBug> if ( skb_flow_dissector_uses_key ( flow_dissector , <S2SV_EndBug> FLOW_DISSECTOR_KEY_PORTS ) ) { key_ports = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_PORTS , target_container ) ; key_ports -> ports = __skb_flow_get_ports ( skb , nhoff , ip_proto , data , hlen ) ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip_proto = 0 ; bool ret = false <S2SV_ModStart> < 5 ) goto out_bad <S2SV_ModEnd> ; nhoff += <S2SV_ModStart> ! iph ) goto out_bad <S2SV_ModEnd> ; ip_proto = <S2SV_ModStart> ! vlan ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> ! hdr ) goto out_bad <S2SV_ModEnd> ; proto = <S2SV_ModStart> ; default : goto out_bad <S2SV_ModEnd> ; } } <S2SV_ModStart> ! hdr ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> FLOW_DISSECTOR_KEY_TIPC_ADDRS ; } goto out_good <S2SV_ModEnd> ; } case <S2SV_ModStart> ! hdr ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ; } goto out_good ; } goto out_good <S2SV_ModEnd> ; } case <S2SV_ModStart> ; default : goto out_bad <S2SV_ModEnd> ; } ip_proto_again <S2SV_ModStart> ! hdr ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> ! keyid ) goto out_bad <S2SV_ModEnd> ; if ( <S2SV_ModStart> ! eth ) goto out_bad <S2SV_ModEnd> ; proto = <S2SV_ModStart> ! opthdr ) goto out_bad <S2SV_ModEnd> ; ip_proto = <S2SV_ModStart> break ; } if ( skb_flow_dissector_uses_key ( flow_dissector , FLOW_DISSECTOR_KEY_PORTS ) ) { key_ports = skb_flow_dissector_target ( flow_dissector , FLOW_DISSECTOR_KEY_PORTS , target_container ) ; key_ports -> ports = __skb_flow_get_ports ( skb , nhoff , ip_proto , data , hlen ) ; } out_good : ret = true ; out_bad : <S2SV_ModStart> ) nhoff ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12664\n\n```\nCWE-772 static Image * ReadPALMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; MagickOffsetType totalOffset , seekNextDepth ; PixelInfo transpix ; Quantum index ; register ssize_t i , x ; register Quantum * q ; size_t bytes_per_row , flags , bits_per_pixel , version , nextDepthOffset , transparentIndex , compressionType , byte , mask , redbits , greenbits , bluebits , one , pad , size , bit ; ssize_t count , y ; unsigned char <S2SV_StartBug> * lastrow , <S2SV_EndBug> * one_row , * ptr ; unsigned short color16 ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { ( void ) DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } totalOffset = 0 ; do { image -> columns = ReadBlobMSBShort ( image ) ; image -> rows = ReadBlobMSBShort ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; bytes_per_row = ReadBlobMSBShort ( image ) ; flags = ReadBlobMSBShort ( image ) ; bits_per_pixel = ( size_t ) ReadBlobByte ( image ) ; if ( ( bits_per_pixel != 1 ) && ( bits_per_pixel != 2 ) && ( bits_per_pixel != 4 ) && ( bits_per_pixel != 8 ) && ( bits_per_pixel != 16 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; version = ( size_t ) ReadBlobByte ( image ) ; if ( ( version != 0 ) && ( version != 1 ) && ( version != 2 ) ) ThrowReaderException ( CorruptImageError , \"FileFormatVersionMismatch\" ) ; nextDepthOffset = ( size_t ) ReadBlobMSBShort ( image ) ; transparentIndex = ( size_t ) ReadBlobByte ( image ) ; compressionType = ( size_t ) ReadBlobByte ( image ) ; if ( ( compressionType != PALM_COMPRESSION_NONE ) && ( compressionType != PALM_COMPRESSION_SCANLINE ) && ( compressionType != PALM_COMPRESSION_RLE ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; pad = ReadBlobMSBShort ( image ) ; ( void ) pad ; one = 1 ; if ( ( bits_per_pixel < 16 ) && ( AcquireImageColormap ( image , one << bits_per_pixel , exception ) == MagickFalse ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; GetPixelInfo ( image , & transpix ) ; if ( bits_per_pixel == 16 ) { redbits = ( size_t ) ReadBlobByte ( image ) ; ( void ) redbits ; greenbits = ( size_t ) ReadBlobByte ( image ) ; ( void ) greenbits ; bluebits = ( size_t ) ReadBlobByte ( image ) ; ( void ) bluebits ; ReadBlobByte ( image ) ; ReadBlobByte ( image ) ; transpix . red = ( double ) ( QuantumRange * ReadBlobByte ( image ) / 31 ) ; transpix . green = ( double ) ( QuantumRange * ReadBlobByte ( image ) / 63 ) ; transpix . blue = ( double ) ( QuantumRange * ReadBlobByte ( image ) / 31 ) ; } if ( bits_per_pixel == 8 ) { ssize_t index ; if ( flags & PALM_HAS_COLORMAP_FLAG ) { count = ( ssize_t ) ReadBlobMSBShort ( image ) ; for ( i = 0 ; i < ( ssize_t ) count ; i ++ ) { ReadBlobByte ( image ) ; index = ConstrainColormapIndex ( image , 255 - i , exception ) ; image -> colormap [ index ] . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ index ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ index ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } } else for ( i = 0 ; i < ( ssize_t ) ( 1L << bits_per_pixel ) ; i ++ ) { index = ConstrainColormapIndex ( image , 255 - i , exception ) ; image -> colormap [ index ] . red = ( MagickRealType ) ScaleCharToQuantum ( PalmPalette [ i ] [ 0 ] ) ; image -> colormap [ index ] . green = ( MagickRealType ) ScaleCharToQuantum ( PalmPalette [ i ] [ 1 ] ) ; image -> colormap [ index ] . blue = ( MagickRealType ) ScaleCharToQuantum ( PalmPalette [ i ] [ 2 ] ) ; } } if ( flags & PALM_IS_COMPRESSED_FLAG ) size = ReadBlobMSBShort ( image ) ; ( void ) size ; image -> storage_class = DirectClass ; if ( bits_per_pixel < 16 ) { image -> storage_class = PseudoClass ; image -> depth = 8 ; } if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( image ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; one_row = ( unsigned char * ) AcquireQuantumMemory ( MagickMax ( bytes_per_row , 2 * image -> columns ) , sizeof ( * one_row ) ) ; if ( one_row == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> lastrow = ( unsigned char * ) NULL ; <S2SV_EndBug> if ( compressionType == PALM_COMPRESSION_SCANLINE ) { <S2SV_StartBug> lastrow = ( unsigned char * ) AcquireQuantumMemory ( MagickMax ( bytes_per_row , <S2SV_EndBug> <S2SV_StartBug> 2 * image -> columns ) , sizeof ( * lastrow ) ) ; <S2SV_EndBug> if ( lastrow == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } mask = ( size_t ) ( 1U << bits_per_pixel ) - 1 ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { if ( ( flags & PALM_IS_COMPRESSED_FLAG ) == 0 ) { image -> compression = NoCompression ; count = ReadBlob ( image , bytes_per_row , one_row ) ; if ( count != ( ssize_t ) bytes_per_row ) break ; } else { if ( compressionType == PALM_COMPRESSION_RLE ) { image -> compression = RLECompression ; for ( i = 0 ; i < ( ssize_t ) bytes_per_row ; ) { count = ( ssize_t ) ReadBlobByte ( image ) ; if ( count < 0 ) break ; count = MagickMin ( count , ( ssize_t ) bytes_per_row - i ) ; byte = ( size_t ) ReadBlobByte ( image ) ; ( void ) ResetMagickMemory ( one_row + i , ( int ) byte , ( size_t ) count ) ; i += count ; } } else if ( compressionType == PALM_COMPRESSION_SCANLINE ) { size_t one ; one = 1 ; image -> compression = FaxCompression ; for ( i = 0 ; i < ( ssize_t ) bytes_per_row ; i += 8 ) { count = ( ssize_t ) ReadBlobByte ( image ) ; if ( count < 0 ) break ; byte = ( size_t ) MagickMin ( ( ssize_t ) bytes_per_row - i , 8 ) ; for ( bit = 0 ; bit < byte ; bit ++ ) { if ( ( y == 0 ) || ( count & ( one << ( 7 - bit ) ) ) ) one_row [ i + bit ] = ( unsigned char ) ReadBlobByte ( image ) ; else <S2SV_StartBug> one_row [ i + bit ] = lastrow [ i + bit ] ; <S2SV_EndBug> } } <S2SV_StartBug> ( void ) CopyMagickMemory ( lastrow , one_row , bytes_per_row ) ; <S2SV_EndBug> } } ptr = one_row ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; if ( bits_per_pixel == 16 ) { if ( image -> columns > ( 2 * bytes_per_row ) ) { one_row = ( unsigned char * ) RelinquishMagickMemory ( one_row ) ; if ( compressionType == PALM_COMPRESSION_SCANLINE ) <S2SV_StartBug> lastrow = ( unsigned char * ) RelinquishMagickMemory ( lastrow ) ; <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { color16 = ( * ptr ++ << 8 ) ; color16 |= ( * ptr ++ ) ; SetPixelRed ( image , ( Quantum ) ( ( QuantumRange * ( ( color16 >> 11 ) & 0x1f ) ) / 0x1f ) , q ) ; SetPixelGreen ( image , ( Quantum ) ( ( QuantumRange * ( ( color16 >> 5 ) & 0x3f ) ) / 0x3f ) , q ) ; SetPixelBlue ( image , ( Quantum ) ( ( QuantumRange * ( ( color16 >> 0 ) & 0x1f ) ) / 0x1f ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; q += GetPixelChannels ( image ) ; } } else { bit = 8 - bits_per_pixel ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( ( size_t ) ( ptr - one_row ) >= bytes_per_row ) { one_row = ( unsigned char * ) RelinquishMagickMemory ( one_row ) ; if ( compressionType == PALM_COMPRESSION_SCANLINE ) <S2SV_StartBug> lastrow = ( unsigned char * ) RelinquishMagickMemory ( lastrow ) ; <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } index = ( Quantum ) ( mask - ( ( ( * ptr ) & ( mask << bit ) ) >> bit ) ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; if ( bit ) bit -= bits_per_pixel ; else { ptr ++ ; bit = 8 - bits_per_pixel ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( flags & PALM_HAS_TRANSPARENCY_FLAG ) { ssize_t index = ConstrainColormapIndex ( image , ( ssize_t ) ( mask - transparentIndex ) , exception ) ; if ( bits_per_pixel != 16 ) transpix = image -> colormap [ index ] ; ( void ) TransparentPaintImage ( image , & transpix , ( Quantum ) TransparentAlpha , MagickFalse , exception ) ; } one_row = ( unsigned char * ) RelinquishMagickMemory ( one_row ) ; if ( compressionType == PALM_COMPRESSION_SCANLINE ) <S2SV_StartBug> lastrow = ( unsigned char * ) RelinquishMagickMemory ( lastrow ) ; <S2SV_EndBug> if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( nextDepthOffset != 0 ) { totalOffset += ( MagickOffsetType ) ( nextDepthOffset * 4 ) ; if ( totalOffset >= ( MagickOffsetType ) GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) else seekNextDepth = SeekBlob ( image , totalOffset , SEEK_SET ) ; if ( seekNextDepth != totalOffset ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { ( void ) DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( nextDepthOffset != 0 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned char * last_row <S2SV_ModEnd> , * one_row <S2SV_ModStart> \"MemoryAllocationFailed\" ) ; last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> PALM_COMPRESSION_SCANLINE ) { last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> sizeof ( * last_row ) ) ; if ( last_row <S2SV_ModEnd> == ( unsigned <S2SV_ModStart> bit ] = last_row <S2SV_ModEnd> [ i + <S2SV_ModStart> ) CopyMagickMemory ( last_row <S2SV_ModEnd> , one_row , <S2SV_ModStart> == PALM_COMPRESSION_SCANLINE ) last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> ) RelinquishMagickMemory ( last_row <S2SV_ModEnd> ) ; ThrowReaderException <S2SV_ModStart> == PALM_COMPRESSION_SCANLINE ) last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> ) RelinquishMagickMemory ( last_row <S2SV_ModEnd> ) ; ThrowReaderException <S2SV_ModStart> == PALM_COMPRESSION_SCANLINE ) last_row <S2SV_ModEnd> = ( unsigned <S2SV_ModStart> ) RelinquishMagickMemory ( last_row <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3182\n\n```\nCWE-119 static int logi_dj_raw_event ( struct hid_device * hdev , struct hid_report * report , u8 * data , int size ) { struct dj_receiver_dev * djrcv_dev = hid_get_drvdata ( hdev ) ; struct dj_report * dj_report = ( struct dj_report * ) data ; unsigned long flags ; bool report_processed = false ; <S2SV_StartBug> dbg_hid ( \"%s,<S2SV_blank>size:%d\\\\n\" , __func__ , size ) ; <S2SV_EndBug> spin_lock_irqsave ( & djrcv_dev -> lock , flags ) ; if ( dj_report -> report_id == REPORT_ID_DJ_SHORT ) { switch ( dj_report -> report_type ) { case REPORT_TYPE_NOTIF_DEVICE_PAIRED : case REPORT_TYPE_NOTIF_DEVICE_UNPAIRED : logi_dj_recv_queue_notification ( djrcv_dev , dj_report ) ; break ; case REPORT_TYPE_NOTIF_CONNECTION_STATUS : if ( dj_report -> report_params [ CONNECTION_STATUS_PARAM_STATUS ] == STATUS_LINKLOSS ) { logi_dj_recv_forward_null_report ( djrcv_dev , dj_report ) ; } break ; default : logi_dj_recv_forward_report ( djrcv_dev , dj_report ) ; } report_processed = true ; } spin_unlock_irqrestore ( & djrcv_dev -> lock , flags ) ; return report_processed ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) ; if ( ( dj_report -> device_index < DJ_DEVICE_INDEX_MIN ) || ( dj_report -> device_index > DJ_DEVICE_INDEX_MAX ) ) { dev_err ( & hdev -> dev , \"%s:<S2SV_blank>invalid<S2SV_blank>device<S2SV_blank>index:%d\\\\n\" , __func__ , dj_report -> device_index ) ; return false ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-89(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0036\n\n```\nCWE-89 static CURLcode imap_parse_url_path ( struct connectdata * conn ) { struct imap_conn * imapc = & conn -> proto . imapc ; struct SessionHandle * data = conn -> data ; const char * path = data -> state . path ; <S2SV_StartBug> int len ; <S2SV_EndBug> if ( ! * path ) path = \"INBOX\" ; <S2SV_StartBug> imapc -> mailbox = curl_easy_unescape ( data , path , 0 , & len ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! imapc -> mailbox ) <S2SV_EndBug> return CURLE_OUT_OF_MEMORY ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . path ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> = \"INBOX\" ; return Curl_urldecode <S2SV_ModEnd> ( data , <S2SV_ModStart> 0 , & <S2SV_ModEnd> imapc -> mailbox <S2SV_ModStart> imapc -> mailbox , NULL , TRUE ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4086\n\n```\nCWE-119 static int journal_unmap_buffer ( journal_t * journal , struct buffer_head * bh ) { transaction_t * transaction ; struct journal_head * jh ; int may_free = 1 ; int ret ; BUFFER_TRACE ( bh , \"entry\" ) ; if ( ! buffer_jbd ( bh ) ) goto zap_buffer_unlocked ; write_lock ( & journal -> j_state_lock ) ; jbd_lock_bh_state ( bh ) ; spin_lock ( & journal -> j_list_lock ) ; jh = jbd2_journal_grab_journal_head ( bh ) ; if ( ! jh ) goto zap_buffer_no_jh ; transaction = jh -> b_transaction ; if ( transaction == NULL ) { if ( ! jh -> b_cp_transaction ) { JBUFFER_TRACE ( jh , \"not<S2SV_blank>on<S2SV_blank>any<S2SV_blank>transaction:<S2SV_blank>zap\" ) ; goto zap_buffer ; } if ( ! buffer_dirty ( bh ) ) { goto zap_buffer ; } if ( journal -> j_running_transaction ) { JBUFFER_TRACE ( jh , \"checkpointed:<S2SV_blank>add<S2SV_blank>to<S2SV_blank>BJ_Forget\" ) ; ret = __dispose_buffer ( jh , journal -> j_running_transaction ) ; jbd2_journal_put_journal_head ( jh ) ; spin_unlock ( & journal -> j_list_lock ) ; jbd_unlock_bh_state ( bh ) ; write_unlock ( & journal -> j_state_lock ) ; return ret ; } else { if ( journal -> j_committing_transaction ) { JBUFFER_TRACE ( jh , \"give<S2SV_blank>to<S2SV_blank>committing<S2SV_blank>trans\" ) ; ret = __dispose_buffer ( jh , journal -> j_committing_transaction ) ; jbd2_journal_put_journal_head ( jh ) ; spin_unlock ( & journal -> j_list_lock ) ; jbd_unlock_bh_state ( bh ) ; write_unlock ( & journal -> j_state_lock ) ; return ret ; } else { clear_buffer_jbddirty ( bh ) ; goto zap_buffer ; } } } else if ( transaction == journal -> j_committing_transaction ) { JBUFFER_TRACE ( jh , \"on<S2SV_blank>committing<S2SV_blank>transaction\" ) ; set_buffer_freed ( bh ) ; if ( journal -> j_running_transaction && buffer_jbddirty ( bh ) ) jh -> b_next_transaction = journal -> j_running_transaction ; jbd2_journal_put_journal_head ( jh ) ; spin_unlock ( & journal -> j_list_lock ) ; jbd_unlock_bh_state ( bh ) ; write_unlock ( & journal -> j_state_lock ) ; return 0 ; } else { J_ASSERT_JH ( jh , transaction == journal -> j_running_transaction ) ; JBUFFER_TRACE ( jh , \"on<S2SV_blank>running<S2SV_blank>transaction\" ) ; may_free = __dispose_buffer ( jh , transaction ) ; } zap_buffer : jbd2_journal_put_journal_head ( jh ) ; zap_buffer_no_jh : spin_unlock ( & journal -> j_list_lock ) ; jbd_unlock_bh_state ( bh ) ; write_unlock ( & journal -> j_state_lock ) ; zap_buffer_unlocked : clear_buffer_dirty ( bh ) ; J_ASSERT_BH ( bh , ! buffer_jbddirty ( bh ) ) ; clear_buffer_mapped ( bh ) ; clear_buffer_req ( bh ) ; clear_buffer_new ( bh ) ; <S2SV_StartBug> bh -> b_bdev = NULL ; <S2SV_EndBug> return may_free ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bh ) ; clear_buffer_delay ( bh ) ; clear_buffer_unwritten ( bh ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20856\n\n```\nCWE-416 int blk_init_allocated_queue ( struct request_queue * q ) { WARN_ON_ONCE ( q -> mq_ops ) ; q -> fq = blk_alloc_flush_queue ( q , NUMA_NO_NODE , q -> cmd_size ) ; if ( ! q -> fq ) return - ENOMEM ; if ( q -> init_rq_fn && q -> init_rq_fn ( q , q -> fq -> flush_rq , GFP_KERNEL ) ) goto out_free_flush_queue ; if ( blk_init_rl ( & q -> root_rl , q , GFP_KERNEL ) ) goto out_exit_flush_rq ; INIT_WORK ( & q -> timeout_work , blk_timeout_work ) ; q -> queue_flags |= QUEUE_FLAG_DEFAULT ; blk_queue_make_request ( q , blk_queue_bio ) ; q -> sg_reserved_size = INT_MAX ; if ( elevator_init ( q ) ) goto out_exit_flush_rq ; return 0 ; out_exit_flush_rq : if ( q -> exit_rq_fn ) q -> exit_rq_fn ( q , q -> fq -> flush_rq ) ; out_free_flush_queue : blk_free_flush_queue ( q -> fq ) ; <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fq ) ; q -> fq = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5472\n\n```\nCWE-20 <S2SV_StartBug> int parse_rock_ridge_inode ( struct iso_directory_record * de , struct inode * inode ) <S2SV_EndBug> { <S2SV_StartBug> int result = parse_rock_ridge_inode_internal ( de , inode , 0 ) ; <S2SV_EndBug> if ( ( ISOFS_SB ( inode -> i_sb ) -> s_rock_offset == - 1 ) && ( ISOFS_SB ( inode -> i_sb ) -> s_rock == 2 ) ) { <S2SV_StartBug> result = parse_rock_ridge_inode_internal ( de , inode , 14 ) ; <S2SV_EndBug> } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode * inode , int relocated ) { int flags = relocated ? RR_RELOC_DE : 0 ; <S2SV_ModEnd> int result = <S2SV_ModStart> , inode , flags <S2SV_ModEnd> ) ; if <S2SV_ModStart> , inode , flags | RR_REGARD_XA <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20458\n\n```\nCWE-125 struct r_bin_dyldcache_lib_t * r_bin_dyldcache_extract ( struct r_bin_dyldcache_obj_t * bin , int idx , int * nlib ) { ut64 liboff , linkedit_offset ; ut64 dyld_vmbase ; ut32 addend = 0 ; struct r_bin_dyldcache_lib_t * ret = NULL ; struct dyld_cache_image_info * image_infos = NULL ; struct mach_header * mh ; ut8 * data , * cmdptr ; int cmd , libsz = 0 ; RBuffer * dbuf ; char * libname ; if ( ! bin ) { return NULL ; } if ( bin -> size < 1 ) { eprintf ( \"Empty<S2SV_blank>file?<S2SV_blank>(%s)\\\\n\" , bin -> file ? bin -> file : \"(null)\" ) ; return NULL ; } if ( bin -> nlibs < 0 || idx < 0 || idx >= bin -> nlibs ) { return NULL ; } * nlib = bin -> nlibs ; ret = R_NEW0 ( struct r_bin_dyldcache_lib_t ) ; if ( ! ret ) { <S2SV_StartBug> perror ( \"malloc<S2SV_blank>(ret)\" ) ; <S2SV_EndBug> return NULL ; } if ( bin -> hdr . startaddr > bin -> size ) { eprintf ( \"corrupted<S2SV_blank>dyldcache\" ) ; free ( ret ) ; return NULL ; } if ( bin -> hdr . startaddr > bin -> size || bin -> hdr . baseaddroff > bin -> size ) { eprintf ( \"corrupted<S2SV_blank>dyldcache\" ) ; free ( ret ) ; return NULL ; } <S2SV_StartBug> image_infos = ( struct dyld_cache_image_info * ) ( bin -> b -> buf + bin -> hdr . startaddr ) ; <S2SV_EndBug> <S2SV_StartBug> dyld_vmbase = * ( ut64 * ) ( bin -> b -> buf + bin -> hdr . baseaddroff ) ; <S2SV_EndBug> liboff = image_infos [ idx ] . address - dyld_vmbase ; if ( liboff > bin -> size ) { eprintf ( \"Corrupted<S2SV_blank>file\\\\n\" ) ; free ( ret ) ; return NULL ; } ret -> offset = liboff ; <S2SV_StartBug> if ( image_infos [ idx ] . pathFileOffset > bin -> size ) { <S2SV_EndBug> <S2SV_StartBug> eprintf ( \"corrupted<S2SV_blank>file\\\\n\" ) ; <S2SV_EndBug> free ( ret ) ; return NULL ; } <S2SV_StartBug> libname = ( char * ) ( bin -> b -> buf + image_infos [ idx ] . pathFileOffset ) ; <S2SV_EndBug> data = bin -> b -> buf + liboff ; mh = ( struct mach_header * ) data ; if ( mh -> magic != MH_MAGIC && mh -> magic != MH_MAGIC_64 ) { if ( mh -> magic == 0xbebafeca ) { eprintf ( \"FAT<S2SV_blank>Binary\\\\n\" ) ; } eprintf ( \"Not<S2SV_blank>mach-o\\\\n\" ) ; free ( ret ) ; return NULL ; } if ( ! ( dbuf = r_buf_new ( ) ) ) { eprintf ( \"new<S2SV_blank>(dbuf)\\\\n\" ) ; free ( ret ) ; return NULL ; } addend = mh -> magic == MH_MAGIC ? sizeof ( struct mach_header ) : sizeof ( struct mach_header_64 ) ; r_buf_set_bytes ( dbuf , data , addend ) ; cmdptr = data + addend ; for ( cmd = 0 ; cmd < mh -> ncmds ; cmd ++ ) { struct load_command * lc = ( struct load_command * ) cmdptr ; r_buf_append_bytes ( dbuf , ( ut8 * ) lc , lc -> cmdsize ) ; cmdptr += lc -> cmdsize ; } cmdptr = data + addend ; for ( cmd = linkedit_offset = 0 ; cmd < mh -> ncmds ; cmd ++ ) { struct load_command * lc = ( struct load_command * ) cmdptr ; cmdptr += lc -> cmdsize ; switch ( lc -> cmd ) { case LC_SEGMENT : { struct segment_command * seg = ( struct segment_command * ) lc ; int t = seg -> filesize ; if ( seg -> fileoff + seg -> filesize > bin -> size || seg -> fileoff > bin -> size ) { eprintf ( \"malformed<S2SV_blank>dyldcache\\\\n\" ) ; free ( ret ) ; r_buf_free ( dbuf ) ; return NULL ; } r_buf_append_bytes ( dbuf , bin -> b -> buf + seg -> fileoff , t ) ; r_bin_dyldcache_apply_patch ( dbuf , dbuf -> length , ( ut64 ) ( ( size_t ) & seg -> fileoff - ( size_t ) data ) ) ; int sect_offset = seg -> fileoff - libsz ; libsz = dbuf -> length ; if ( ! strcmp ( seg -> segname , \"__LINKEDIT\" ) ) { linkedit_offset = sect_offset ; } if ( seg -> nsects > 0 ) { struct section * sects = ( struct section * ) ( ( ut8 * ) seg + sizeof ( struct segment_command ) ) ; int nsect ; for ( nsect = 0 ; nsect < seg -> nsects ; nsect ++ ) { if ( sects [ nsect ] . offset > libsz ) { r_bin_dyldcache_apply_patch ( dbuf , sects [ nsect ] . offset - sect_offset , ( ut64 ) ( ( size_t ) & sects [ nsect ] . offset - ( size_t ) data ) ) ; } } } } break ; case LC_SYMTAB : { struct symtab_command * st = ( struct symtab_command * ) lc ; NZ_OFFSET ( st -> symoff ) ; NZ_OFFSET ( st -> stroff ) ; } break ; case LC_DYSYMTAB : { struct dysymtab_command * st = ( struct dysymtab_command * ) lc ; NZ_OFFSET ( st -> tocoff ) ; NZ_OFFSET ( st -> modtaboff ) ; NZ_OFFSET ( st -> extrefsymoff ) ; NZ_OFFSET ( st -> indirectsymoff ) ; NZ_OFFSET ( st -> extreloff ) ; NZ_OFFSET ( st -> locreloff ) ; } break ; case LC_DYLD_INFO : case LC_DYLD_INFO_ONLY : { struct dyld_info_command * st = ( struct dyld_info_command * ) lc ; NZ_OFFSET ( st -> rebase_off ) ; NZ_OFFSET ( st -> bind_off ) ; NZ_OFFSET ( st -> weak_bind_off ) ; NZ_OFFSET ( st -> lazy_bind_off ) ; NZ_OFFSET ( st -> export_off ) ; } break ; } } ret -> b = dbuf ; strncpy ( ret -> path , libname , sizeof ( ret -> path ) - 1 ) ; ret -> size = libsz ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret ) { <S2SV_ModEnd> return NULL ; <S2SV_ModStart> NULL ; } int sz = bin -> nlibs * sizeof ( struct dyld_cache_image_info ) ; image_infos = malloc ( sz ) ; if ( ! image_infos ) { free ( ret ) ; return NULL ; } r_buf_read_at <S2SV_ModEnd> ( bin -> <S2SV_ModStart> bin -> b , <S2SV_ModEnd> bin -> hdr <S2SV_ModStart> hdr . startaddr , ( ut8 * ) image_infos , sz <S2SV_ModStart> ; dyld_vmbase = r_buf_read64le <S2SV_ModEnd> ( bin -> <S2SV_ModStart> bin -> b , <S2SV_ModEnd> bin -> hdr <S2SV_ModStart> = liboff ; int pfo = <S2SV_ModEnd> image_infos [ idx <S2SV_ModStart> ] . pathFileOffset ; if ( pfo < 0 || pfo <S2SV_ModStart> { eprintf ( \"corrupted<S2SV_blank>file:<S2SV_blank>pathFileOffset<S2SV_blank>><S2SV_blank>bin->size<S2SV_blank>(%d)\\\\n\" , pfo <S2SV_ModEnd> ) ; free <S2SV_ModStart> } libname = r_buf_read_string <S2SV_ModEnd> ( bin -> <S2SV_ModStart> bin -> b , pfo , 64 <S2SV_ModEnd> ) ; data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 void bnep_net_setup ( struct net_device * dev ) { memset ( dev -> broadcast , 0xff , ETH_ALEN ) ; dev -> addr_len = ETH_ALEN ; ether_setup ( dev ) ; <S2SV_StartBug> dev -> netdev_ops = & bnep_netdev_ops ; <S2SV_EndBug> dev -> watchdog_timeo = HZ * 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6701\n\n```\nCWE-000 <S2SV_StartBug> static ssize_t aio_setup_single_vector ( struct kiocb * kiocb ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> kiocb -> ki_iovec = & kiocb -> ki_inline_vec ; kiocb -> ki_iovec -> iov_base = kiocb -> ki_buf ; <S2SV_StartBug> kiocb -> ki_iovec -> iov_len = kiocb -> ki_left ; <S2SV_EndBug> kiocb -> ki_nr_segs = 1 ; kiocb -> ki_cur_seg = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ssize_t aio_setup_single_vector ( int type , struct file * file , <S2SV_ModStart> kiocb ) { int bytes ; bytes = rw_verify_area ( type , file , & kiocb -> ki_pos , kiocb -> ki_left ) ; if ( bytes < 0 ) return bytes ; <S2SV_ModStart> -> iov_len = bytes <S2SV_ModEnd> ; kiocb ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4656\n\n```\nCWE-190 static bool snd_ctl_remove_numid_conflict ( struct snd_card * card , unsigned int count ) { <S2SV_StartBug> struct snd_kcontrol * kctl ; <S2SV_EndBug> list_for_each_entry ( kctl , & card -> controls , list ) { if ( kctl -> id . numid < card -> last_numid + 1 + count && kctl -> id . numid + kctl -> count > card -> last_numid + 1 ) { card -> last_numid = kctl -> id . numid + kctl -> count - 1 ; return true ; } } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snd_kcontrol * kctl ; if ( card -> last_numid >= UINT_MAX - count ) card -> last_numid = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15116\n\n```\nCWE-476 static int crypto_rng_init_tfm ( struct crypto_tfm * tfm ) { <S2SV_StartBug> struct crypto_rng * rng = __crypto_rng_cast ( tfm ) ; <S2SV_EndBug> struct rng_alg * alg = crypto_rng_alg ( rng ) ; struct old_rng_alg * oalg = crypto_old_rng_alg ( rng ) ; if ( oalg -> rng_make_random ) { rng -> generate = generate ; rng -> seed = rngapi_reset ; rng -> seedsize = oalg -> seedsize ; return 0 ; } rng -> generate = alg -> generate ; rng -> seed = alg -> seed ; rng -> seedsize = alg -> seedsize ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tfm ) { <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1957\n\n```\nCWE-264 int propagate_mnt ( struct mount * dest_mnt , struct dentry * dest_dentry , struct mount * source_mnt , struct list_head * tree_list ) { <S2SV_StartBug> struct mount * m , * child ; <S2SV_EndBug> int ret = 0 ; struct mount * prev_dest_mnt = dest_mnt ; struct mount * prev_src_mnt = source_mnt ; LIST_HEAD ( tmp_list ) ; LIST_HEAD ( umount_list ) ; for ( m = propagation_next ( dest_mnt , dest_mnt ) ; m ; m = propagation_next ( m , dest_mnt ) ) { int type ; struct mount * source ; if ( IS_MNT_NEW ( m ) ) continue ; <S2SV_StartBug> source = get_source ( m , prev_dest_mnt , prev_src_mnt , & type ) ; <S2SV_EndBug> child = copy_tree ( source , source -> mnt . mnt_root , type ) ; if ( IS_ERR ( child ) ) { ret = PTR_ERR ( child ) ; list_splice ( tree_list , tmp_list . prev ) ; goto out ; } if ( is_subdir ( dest_dentry , m -> mnt . mnt_root ) ) { mnt_set_mountpoint ( m , dest_dentry , child ) ; list_add_tail ( & child -> mnt_hash , tree_list ) ; } else { list_add_tail ( & child -> mnt_hash , & tmp_list ) ; } prev_dest_mnt = m ; prev_src_mnt = child ; } out : br_write_lock ( & vfsmount_lock ) ; while ( ! list_empty ( & tmp_list ) ) { child = list_first_entry ( & tmp_list , struct mount , mnt_hash ) ; umount_tree ( child , 0 , & umount_list ) ; } br_write_unlock ( & vfsmount_lock ) ; release_mounts ( & umount_list ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct user_namespace * user_ns = current -> nsproxy -> mnt_ns -> user_ns ; struct <S2SV_ModStart> & type ) ; if ( m -> mnt_ns -> user_ns != user_ns ) type |= CL_UNPRIVILEGED\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static INLINE void mi_buf_shift ( MACROBLOCK * x , int i ) { MB_MODE_INFO * const mbmi = & x -> e_mbd . mi [ 0 ] -> mbmi ; struct macroblock_plane * const p = & x -> plane [ 0 ] ; struct macroblockd_plane * const pd = & x -> e_mbd . plane [ 0 ] ; <S2SV_StartBug> p -> src . buf = & p -> src . buf [ raster_block_offset ( BLOCK_8X8 , i , p -> src . stride ) ] ; <S2SV_EndBug> assert ( ( ( intptr_t ) pd -> pre [ 0 ] . buf & 0x7 ) == 0 ) ; <S2SV_StartBug> pd -> pre [ 0 ] . buf = & pd -> pre [ 0 ] . buf [ raster_block_offset ( BLOCK_8X8 , i , <S2SV_EndBug> pd -> pre [ 0 ] . stride ) ] ; if ( has_second_ref ( mbmi ) ) <S2SV_StartBug> pd -> pre [ 1 ] . buf = & pd -> pre [ 1 ] . buf [ raster_block_offset ( BLOCK_8X8 , i , <S2SV_EndBug> pd -> pre [ 1 ] . stride ) ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . buf [ vp9_raster_block_offset <S2SV_ModEnd> ( BLOCK_8X8 , <S2SV_ModStart> . buf [ vp9_raster_block_offset <S2SV_ModEnd> ( BLOCK_8X8 , <S2SV_ModStart> . buf [ vp9_raster_block_offset <S2SV_ModEnd> ( BLOCK_8X8 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 gprincs_ret * get_princs_2_svc ( gprincs_arg * arg , struct svc_req * rqstp ) { static gprincs_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_gprincs_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } prime_arg = arg -> exp ; if ( prime_arg == NULL ) prime_arg = \"*\" ; if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_LIST , NULL , NULL ) ) { ret . code = KADM5_AUTH_LIST ; log_unauth ( \"kadm5_get_principals\" , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_get_principals ( ( void * ) handle , arg -> exp , & ret . princs , & ret . count ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_get_principals\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> ) ; } exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13047\n\n```\nCWE-125 static void esis_print ( netdissect_options * ndo , const uint8_t * pptr , u_int length ) { const uint8_t * optr ; u_int li , esis_pdu_type , source_address_length , source_address_number ; const struct esis_header_t * esis_header ; if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"ES-IS\" ) ) ; if ( length <= 2 ) { ND_PRINT ( ( ndo , ndo -> ndo_qflag ? \"bad<S2SV_blank>pkt!\" : \"no<S2SV_blank>header<S2SV_blank>at<S2SV_blank>all!\" ) ) ; return ; } esis_header = ( const struct esis_header_t * ) pptr ; ND_TCHECK ( * esis_header ) ; li = esis_header -> length_indicator ; optr = pptr ; if ( esis_header -> nlpid != NLPID_ESIS ) { ND_PRINT ( ( ndo , \"<S2SV_blank>nlpid<S2SV_blank>0x%02x<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , esis_header -> nlpid ) ) ; return ; } if ( esis_header -> version != ESIS_VERSION ) { ND_PRINT ( ( ndo , \"<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , esis_header -> version ) ) ; return ; } if ( li > length ) { ND_PRINT ( ( ndo , \"<S2SV_blank>length<S2SV_blank>indicator(%u)<S2SV_blank>><S2SV_blank>PDU<S2SV_blank>size<S2SV_blank>(%u)!\" , li , length ) ) ; return ; } if ( li < sizeof ( struct esis_header_t ) + 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>length<S2SV_blank>indicator<S2SV_blank>%u<S2SV_blank><<S2SV_blank>min<S2SV_blank>PDU<S2SV_blank>size:\" , li ) ) ; while ( pptr < ndo -> ndo_snapend ) ND_PRINT ( ( ndo , \"%02X\" , * pptr ++ ) ) ; return ; } esis_pdu_type = esis_header -> type & ESIS_PDU_TYPE_MASK ; if ( ndo -> ndo_vflag < 1 ) { ND_PRINT ( ( ndo , \"%s%s,<S2SV_blank>length<S2SV_blank>%u\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , tok2str ( esis_pdu_values , \"unknown<S2SV_blank>type<S2SV_blank>(%u)\" , esis_pdu_type ) , length ) ) ; return ; } else ND_PRINT ( ( ndo , \"%slength<S2SV_blank>%u\\\\n\\\\t%s<S2SV_blank>(%u)\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , length , tok2str ( esis_pdu_values , \"unknown<S2SV_blank>type:<S2SV_blank>%u\" , esis_pdu_type ) , esis_pdu_type ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>v:<S2SV_blank>%u%s\" , esis_header -> version , esis_header -> version == ESIS_VERSION ? \"\" : \"unsupported\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>checksum:<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( esis_header -> cksum ) ) ) ; osi_print_cksum ( ndo , pptr , EXTRACT_16BITS ( esis_header -> cksum ) , 7 , li ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>holding<S2SV_blank>time:<S2SV_blank>%us,<S2SV_blank>length<S2SV_blank>indicator:<S2SV_blank>%u\" , EXTRACT_16BITS ( esis_header -> holdtime ) , li ) ) ; if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , optr , \"\\\\n\\\\t\" , sizeof ( struct esis_header_t ) ) ; pptr += sizeof ( struct esis_header_t ) ; li -= sizeof ( struct esis_header_t ) ; switch ( esis_pdu_type ) { case ESIS_PDU_REDIRECT : { const uint8_t * dst , * snpa , * neta ; u_int dstl , snpal , netal ; ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } dstl = * pptr ; pptr ++ ; li -- ; ND_TCHECK2 ( * pptr , dstl ) ; if ( li < dstl ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } dst = pptr ; pptr += dstl ; li -= dstl ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s\" , isonsap_string ( ndo , dst , dstl ) ) ) ; ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } snpal = * pptr ; pptr ++ ; li -- ; ND_TCHECK2 ( * pptr , snpal ) ; if ( li < snpal ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } snpa = pptr ; pptr += snpal ; li -= snpal ; ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } netal = * pptr ; pptr ++ ; ND_TCHECK2 ( * pptr , netal ) ; if ( li < netal ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } neta = pptr ; pptr += netal ; li -= netal ; if ( snpal == 6 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>SNPA<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , snpal , etheraddr_string ( ndo , snpa ) ) ) ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>SNPA<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , snpal , linkaddr_string ( ndo , snpa , LINKADDR_OTHER , snpal ) ) ) ; if ( netal != 0 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>NET<S2SV_blank>(length:<S2SV_blank>%u)<S2SV_blank>%s\" , netal , isonsap_string ( ndo , neta , netal ) ) ) ; break ; } case ESIS_PDU_ESH : ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>esh/li\" ) ) ; return ; } source_address_number = * pptr ; pptr ++ ; li -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>Source<S2SV_blank>Addresses:<S2SV_blank>%u\" , source_address_number ) ) ; while ( source_address_number > 0 ) { ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>esh/li\" ) ) ; return ; } source_address_length = * pptr ; pptr ++ ; li -- ; ND_TCHECK2 ( * pptr , source_address_length ) ; if ( li < source_address_length ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>esh/li\" ) ) ; return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>NET<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , source_address_length , isonsap_string ( ndo , pptr , source_address_length ) ) ) ; pptr += source_address_length ; li -= source_address_length ; source_address_number -- ; } break ; case ESIS_PDU_ISH : { ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>ish/li\" ) ) ; return ; } source_address_length = * pptr ; pptr ++ ; li -- ; ND_TCHECK2 ( * pptr , source_address_length ) ; if ( li < source_address_length ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>ish/li\" ) ) ; return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>NET<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , source_address_length , isonsap_string ( ndo , pptr , source_address_length ) ) ) ; pptr += source_address_length ; li -= source_address_length ; break ; } default : if ( ndo -> ndo_vflag <= 1 ) { if ( pptr < ndo -> ndo_snapend ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ndo -> ndo_snapend - pptr ) ; } return ; } while ( li != 0 ) { u_int op , opli ; const uint8_t * tptr ; if ( li < 2 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>opts/li\" ) ) ; return ; } ND_TCHECK2 ( * pptr , 2 ) ; op = * pptr ++ ; opli = * pptr ++ ; li -= 2 ; if ( opli > li ) { ND_PRINT ( ( ndo , \",<S2SV_blank>opt<S2SV_blank>(%d)<S2SV_blank>too<S2SV_blank>long\" , op ) ) ; return ; } li -= opli ; tptr = pptr ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>#%u,<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>value:<S2SV_blank>\" , tok2str ( esis_option_values , \"Unknown\" , op ) , op , opli ) ) ; switch ( op ) { case ESIS_OPTION_ES_CONF_TIME : if ( opli == 2 ) { ND_TCHECK2 ( * pptr , 2 ) ; ND_PRINT ( ( ndo , \"%us\" , EXTRACT_16BITS ( tptr ) ) ) ; } else ND_PRINT ( ( ndo , \"(bad<S2SV_blank>length)\" ) ) ; break ; case ESIS_OPTION_PROTOCOLS : while ( opli > 0 ) { <S2SV_StartBug> ND_TCHECK ( * pptr ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>(0x%02x)\" , tok2str ( nlpid_values , \"unknown\" , * tptr ) , * tptr ) ) ; if ( opli > 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; tptr ++ ; opli -- ; } break ; case ESIS_OPTION_QOS_MAINTENANCE : case ESIS_OPTION_SECURITY : case ESIS_OPTION_PRIORITY : case ESIS_OPTION_ADDRESS_MASK : case ESIS_OPTION_SNPA_MASK : default : print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , opli ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , opli ) ; pptr += opli ; } trunc : <S2SV_StartBug> return ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ND_TCHECK ( * tptr <S2SV_ModEnd> ) ; ND_PRINT <S2SV_ModStart> } trunc : ND_PRINT ( ( ndo , \"[|esis]\" ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5940\n\n```\nCWE-269 static int store_asoundrc ( void ) { fs_build_mnt_dir ( ) ; char * src ; char * dest = RUN_ASOUNDRC_FILE ; FILE * fp = fopen ( dest , \"w\" ) ; if ( fp ) { fprintf ( fp , \"\\\\n\" ) ; SET_PERMS_STREAM ( fp , getuid ( ) , getgid ( ) , 0644 ) ; fclose ( fp ) ; } if ( asprintf ( & src , \"%s/.asoundrc\" , cfg . homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( src , & s ) == 0 ) { if ( is_link ( src ) ) { char * rp = realpath ( src , NULL ) ; if ( ! rp ) { fprintf ( stderr , \"Error:<S2SV_blank>Cannot<S2SV_blank>access<S2SV_blank>%s\\\\n\" , src ) ; exit ( 1 ) ; } if ( strncmp ( rp , cfg . homedir , strlen ( cfg . homedir ) ) != 0 ) { fprintf ( stderr , \"Error:<S2SV_blank>.asoundrc<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symbolic<S2SV_blank>link<S2SV_blank>pointing<S2SV_blank>to<S2SV_blank>a<S2SV_blank>file<S2SV_blank>outside<S2SV_blank>home<S2SV_blank>directory\\\\n\" ) ; exit ( 1 ) ; } free ( rp ) ; } <S2SV_StartBug> pid_t child = fork ( ) ; <S2SV_EndBug> if ( child < 0 ) errExit ( \"fork\" ) ; if ( child == 0 ) { drop_privs ( 0 ) ; int rv = copy_file ( src , dest , getuid ( ) , getgid ( ) , 0644 ) ; <S2SV_StartBug> if ( rv ) <S2SV_EndBug> fprintf ( stderr , \"Warning:<S2SV_blank>cannot<S2SV_blank>transfer<S2SV_blank>.asoundrc<S2SV_blank>in<S2SV_blank>private<S2SV_blank>home<S2SV_blank>directory\\\\n\" ) ; else { <S2SV_StartBug> fs_logger2 ( \"clone\" , dest ) ; <S2SV_EndBug> } _exit ( 0 ) ; } waitpid ( child , NULL , 0 ) ; return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } copy_file_as_user <S2SV_ModEnd> ( src , <S2SV_ModStart> 0644 ) ; <S2SV_ModEnd> fs_logger2 ( \"clone\" <S2SV_ModStart> \"clone\" , dest <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7472\n\n```\nCWE-404 static int install_process_keyring ( void ) { struct cred * new ; int ret ; new = prepare_creds ( ) ; if ( ! new ) return - ENOMEM ; ret = install_process_keyring_to_cred ( new ) ; if ( ret < 0 ) { abort_creds ( new ) ; <S2SV_StartBug> return ret != - EEXIST ? ret : 0 ; <S2SV_EndBug> } return commit_creds ( new ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return ret <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6001\n\n```\nCWE-362 SYSCALL_DEFINE5 ( perf_event_open , struct perf_event_attr __user * , attr_uptr , pid_t , pid , int , cpu , int , group_fd , unsigned long , flags ) { struct perf_event * group_leader = NULL , * output_event = NULL ; struct perf_event * event , * sibling ; struct perf_event_attr attr ; struct perf_event_context * ctx , * uninitialized_var ( gctx ) ; struct file * event_file = NULL ; struct fd group = { NULL , 0 } ; struct task_struct * task = NULL ; struct pmu * pmu ; int event_fd ; int move_group = 0 ; int err ; int f_flags = O_RDWR ; int cgroup_fd = - 1 ; if ( flags & ~ PERF_FLAG_ALL ) return - EINVAL ; err = perf_copy_attr ( attr_uptr , & attr ) ; if ( err ) return err ; if ( ! attr . exclude_kernel ) { if ( perf_paranoid_kernel ( ) && ! capable ( CAP_SYS_ADMIN ) ) return - EACCES ; } if ( attr . freq ) { if ( attr . sample_freq > sysctl_perf_event_sample_rate ) return - EINVAL ; } else { if ( attr . sample_period & ( 1ULL << 63 ) ) return - EINVAL ; } if ( ! attr . sample_max_stack ) attr . sample_max_stack = sysctl_perf_event_max_stack ; if ( ( flags & PERF_FLAG_PID_CGROUP ) && ( pid == - 1 || cpu == - 1 ) ) return - EINVAL ; if ( flags & PERF_FLAG_FD_CLOEXEC ) f_flags |= O_CLOEXEC ; event_fd = get_unused_fd_flags ( f_flags ) ; if ( event_fd < 0 ) return event_fd ; if ( group_fd != - 1 ) { err = perf_fget_light ( group_fd , & group ) ; if ( err ) goto err_fd ; group_leader = group . file -> private_data ; if ( flags & PERF_FLAG_FD_OUTPUT ) output_event = group_leader ; if ( flags & PERF_FLAG_FD_NO_GROUP ) group_leader = NULL ; } if ( pid != - 1 && ! ( flags & PERF_FLAG_PID_CGROUP ) ) { task = find_lively_task_by_vpid ( pid ) ; if ( IS_ERR ( task ) ) { err = PTR_ERR ( task ) ; goto err_group_fd ; } } if ( task && group_leader && group_leader -> attr . inherit != attr . inherit ) { err = - EINVAL ; goto err_task ; } get_online_cpus ( ) ; if ( task ) { err = mutex_lock_interruptible ( & task -> signal -> cred_guard_mutex ) ; if ( err ) goto err_cpus ; err = - EACCES ; if ( ! ptrace_may_access ( task , PTRACE_MODE_READ_REALCREDS ) ) goto err_cred ; } if ( flags & PERF_FLAG_PID_CGROUP ) cgroup_fd = pid ; event = perf_event_alloc ( & attr , cpu , task , group_leader , NULL , NULL , NULL , cgroup_fd ) ; if ( IS_ERR ( event ) ) { err = PTR_ERR ( event ) ; goto err_cred ; } if ( is_sampling_event ( event ) ) { if ( event -> pmu -> capabilities & PERF_PMU_CAP_NO_INTERRUPT ) { err = - EOPNOTSUPP ; goto err_alloc ; } } pmu = event -> pmu ; if ( attr . use_clockid ) { err = perf_event_set_clock ( event , attr . clockid ) ; if ( err ) goto err_alloc ; } if ( pmu -> task_ctx_nr == perf_sw_context ) event -> event_caps |= PERF_EV_CAP_SOFTWARE ; if ( group_leader && ( is_software_event ( event ) != is_software_event ( group_leader ) ) ) { if ( is_software_event ( event ) ) { pmu = group_leader -> pmu ; } else if ( is_software_event ( group_leader ) && ( group_leader -> group_caps & PERF_EV_CAP_SOFTWARE ) ) { move_group = 1 ; } } ctx = find_get_context ( pmu , task , event ) ; if ( IS_ERR ( ctx ) ) { err = PTR_ERR ( ctx ) ; goto err_alloc ; } if ( ( pmu -> capabilities & PERF_PMU_CAP_EXCLUSIVE ) && group_leader ) { err = - EBUSY ; goto err_context ; } if ( group_leader ) { err = - EINVAL ; if ( group_leader -> group_leader != group_leader ) goto err_context ; if ( group_leader -> clock != event -> clock ) goto err_context ; if ( move_group ) { if ( group_leader -> ctx -> task != ctx -> task ) goto err_context ; if ( group_leader -> cpu != event -> cpu ) goto err_context ; } else { if ( group_leader -> ctx != ctx ) goto err_context ; } if ( attr . exclusive || attr . pinned ) goto err_context ; } if ( output_event ) { err = perf_event_set_output ( event , output_event ) ; if ( err ) goto err_context ; } event_file = anon_inode_getfile ( \"[perf_event]\" , & perf_fops , event , f_flags ) ; if ( IS_ERR ( event_file ) ) { err = PTR_ERR ( event_file ) ; event_file = NULL ; goto err_context ; } if ( move_group ) { <S2SV_StartBug> gctx = group_leader -> ctx ; <S2SV_EndBug> mutex_lock_double ( & gctx -> mutex , & ctx -> mutex ) ; if ( gctx -> task == TASK_TOMBSTONE ) { err = - ESRCH ; goto err_locked ; } <S2SV_StartBug> } else { <S2SV_EndBug> mutex_lock ( & ctx -> mutex ) ; } if ( ctx -> task == TASK_TOMBSTONE ) { err = - ESRCH ; goto err_locked ; } if ( ! perf_event_validate_size ( event ) ) { err = - E2BIG ; goto err_locked ; } if ( ! exclusive_event_installable ( event , ctx ) ) { WARN_ON_ONCE ( move_group ) ; err = - EBUSY ; goto err_locked ; } WARN_ON_ONCE ( ctx -> parent_ctx ) ; if ( move_group ) { perf_remove_from_context ( group_leader , 0 ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_remove_from_context ( sibling , 0 ) ; put_ctx ( gctx ) ; } synchronize_rcu ( ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_event__state_init ( sibling ) ; perf_install_in_context ( ctx , sibling , sibling -> cpu ) ; get_ctx ( ctx ) ; } perf_event__state_init ( group_leader ) ; perf_install_in_context ( ctx , group_leader , group_leader -> cpu ) ; get_ctx ( ctx ) ; put_ctx ( gctx ) ; } perf_event__header_size ( event ) ; perf_event__id_header_size ( event ) ; event -> owner = current ; perf_install_in_context ( ctx , event , event -> cpu ) ; perf_unpin_context ( ctx ) ; if ( move_group ) <S2SV_StartBug> mutex_unlock ( & gctx -> mutex ) ; <S2SV_EndBug> mutex_unlock ( & ctx -> mutex ) ; if ( task ) { mutex_unlock ( & task -> signal -> cred_guard_mutex ) ; put_task_struct ( task ) ; } put_online_cpus ( ) ; mutex_lock ( & current -> perf_event_mutex ) ; list_add_tail ( & event -> owner_entry , & current -> perf_event_list ) ; mutex_unlock ( & current -> perf_event_mutex ) ; fdput ( group ) ; fd_install ( event_fd , event_file ) ; return event_fd ; err_locked : if ( move_group ) <S2SV_StartBug> mutex_unlock ( & gctx -> mutex ) ; <S2SV_EndBug> mutex_unlock ( & ctx -> mutex ) ; fput ( event_file ) ; err_context : perf_unpin_context ( ctx ) ; put_ctx ( ctx ) ; err_alloc : if ( ! event_file ) free_event ( event ) ; err_cred : if ( task ) mutex_unlock ( & task -> signal -> cred_guard_mutex ) ; err_cpus : put_online_cpus ( ) ; err_task : if ( task ) put_task_struct ( task ) ; err_group_fd : fdput ( group ) ; err_fd : put_unused_fd ( event_fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { gctx = __perf_event_ctx_lock_double ( group_leader , ctx <S2SV_ModEnd> ) ; if <S2SV_ModStart> err_locked ; } if ( ! ( group_leader -> group_caps & PERF_EV_CAP_SOFTWARE ) ) { if ( gctx != ctx ) { err = - EINVAL ; goto err_locked ; } else { perf_event_ctx_unlock ( group_leader , gctx ) ; move_group = 0 ; } } <S2SV_ModStart> ( move_group ) perf_event_ctx_unlock ( group_leader , gctx <S2SV_ModEnd> ) ; mutex_unlock <S2SV_ModStart> ( move_group ) perf_event_ctx_unlock ( group_leader , gctx <S2SV_ModEnd> ) ; mutex_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6418\n\n```\nCWE-399 static int process_one_ticket ( struct ceph_auth_client * ac , struct ceph_crypto_key * secret , <S2SV_StartBug> void * * p , void * end , <S2SV_EndBug> void * dbuf , void * ticket_buf ) { struct ceph_x_info * xi = ac -> private ; int type ; u8 tkt_struct_v , blob_struct_v ; struct ceph_x_ticket_handler * th ; <S2SV_StartBug> void * dp , * dend ; <S2SV_EndBug> int dlen ; char is_enc ; struct timespec validity ; <S2SV_StartBug> struct ceph_crypto_key old_key ; <S2SV_EndBug> void * tp , * tpend ; struct ceph_timespec new_validity ; struct ceph_crypto_key new_session_key ; struct ceph_buffer * new_ticket_blob ; unsigned long new_expires , new_renew_after ; u64 new_secret_id ; int ret ; ceph_decode_need ( p , end , sizeof ( u32 ) + 1 , bad ) ; type = ceph_decode_32 ( p ) ; dout ( \"<S2SV_blank>ticket<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>%s\\\\n\" , type , ceph_entity_type_name ( type ) ) ; tkt_struct_v = ceph_decode_8 ( p ) ; if ( tkt_struct_v != 1 ) goto bad ; th = get_ticket_handler ( ac , type ) ; if ( IS_ERR ( th ) ) { ret = PTR_ERR ( th ) ; goto out ; } <S2SV_StartBug> dlen = ceph_x_decrypt ( secret , p , end , dbuf , <S2SV_EndBug> TEMP_TICKET_BUF_LEN ) ; if ( dlen <= 0 ) { ret = dlen ; goto out ; } dout ( \"<S2SV_blank>decrypted<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , dlen ) ; dp = dbuf ; dend = dp + dlen ; tkt_struct_v = ceph_decode_8 ( & dp ) ; if ( tkt_struct_v != 1 ) goto bad ; memcpy ( & old_key , & th -> session_key , sizeof ( old_key ) ) ; ret = ceph_crypto_key_decode ( & new_session_key , & dp , dend ) ; if ( ret ) goto out ; ceph_decode_copy ( & dp , & new_validity , sizeof ( new_validity ) ) ; ceph_decode_timespec ( & validity , & new_validity ) ; new_expires = get_seconds ( ) + validity . tv_sec ; new_renew_after = new_expires - ( validity . tv_sec / 4 ) ; dout ( \"<S2SV_blank>expires=%lu<S2SV_blank>renew_after=%lu\\\\n\" , new_expires , new_renew_after ) ; ceph_decode_8_safe ( p , end , is_enc , bad ) ; <S2SV_StartBug> tp = ticket_buf ; <S2SV_EndBug> if ( is_enc ) { dout ( \"<S2SV_blank>encrypted<S2SV_blank>ticket\\\\n\" ) ; dlen = ceph_x_decrypt ( & old_key , p , end , ticket_buf , TEMP_TICKET_BUF_LEN ) ; if ( dlen < 0 ) { ret = dlen ; goto out ; <S2SV_StartBug> } <S2SV_EndBug> dlen = ceph_decode_32 ( & tp ) ; } else { ceph_decode_32_safe ( p , end , dlen , bad ) ; <S2SV_StartBug> ceph_decode_need ( p , end , dlen , bad ) ; <S2SV_EndBug> ceph_decode_copy ( p , ticket_buf , dlen ) ; } tpend = tp + dlen ; dout ( \"<S2SV_blank>ticket<S2SV_blank>blob<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , dlen ) ; ceph_decode_need ( & tp , tpend , 1 + sizeof ( u64 ) , bad ) ; blob_struct_v = ceph_decode_8 ( & tp ) ; new_secret_id = ceph_decode_64 ( & tp ) ; ret = ceph_decode_buffer ( & new_ticket_blob , & tp , tpend ) ; if ( ret ) goto out ; ceph_crypto_key_destroy ( & th -> session_key ) ; if ( th -> ticket_blob ) ceph_buffer_put ( th -> ticket_blob ) ; th -> session_key = new_session_key ; th -> ticket_blob = new_ticket_blob ; th -> validity = new_validity ; th -> secret_id = new_secret_id ; th -> expires = new_expires ; th -> renew_after = new_renew_after ; dout ( \"<S2SV_blank>got<S2SV_blank>ticket<S2SV_blank>service<S2SV_blank>%d<S2SV_blank>(%s)<S2SV_blank>secret_id<S2SV_blank>%lld<S2SV_blank>len<S2SV_blank>%d\\\\n\" , type , ceph_entity_type_name ( type ) , th -> secret_id , ( int ) th -> ticket_blob -> vec . iov_len ) ; xi -> have_keys |= th -> service ; out : <S2SV_StartBug> return ret ; <S2SV_EndBug> bad : ret = - EINVAL ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void * end <S2SV_ModEnd> ) { struct <S2SV_ModStart> ; void * dbuf = NULL ; void * <S2SV_ModStart> struct ceph_crypto_key old_key ; void * ticket_buf = NULL <S2SV_ModStart> , end , & dbuf , 0 <S2SV_ModEnd> ) ; if <S2SV_ModStart> bad ) ; if ( is_enc ) { dout ( \"<S2SV_blank>encrypted<S2SV_blank>ticket\\\\n\" ) ; dlen = ceph_x_decrypt ( & old_key , p , end , & ticket_buf , 0 <S2SV_ModEnd> ) ; if <S2SV_ModStart> out ; } tp = ticket_buf ; <S2SV_ModStart> bad ) ; ticket_buf = kmalloc ( dlen , GFP_NOFS ) ; if ( ! ticket_buf ) { ret = - ENOMEM ; goto out ; } tp = ticket_buf ; <S2SV_ModStart> ; out : kfree ( ticket_buf ) ; kfree ( dbuf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13026\n\n```\nCWE-125 static int isis_print_mt_port_cap_subtlv ( netdissect_options * ndo , const uint8_t * tptr , int len ) { int stlv_type , stlv_len ; const struct isis_subtlv_spb_mcid * subtlv_spb_mcid ; int i ; while ( len > 2 ) { <S2SV_StartBug> stlv_type = * ( tptr ++ ) ; <S2SV_EndBug> stlv_len = * ( tptr ++ ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>subTLV<S2SV_blank>#%u,<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( isis_mt_port_cap_subtlv_values , \"unknown\" , stlv_type ) , stlv_type , stlv_len ) ) ; <S2SV_StartBug> len = len - 2 ; <S2SV_EndBug> switch ( stlv_type ) { case ISIS_SUBTLV_SPB_MCID : { <S2SV_StartBug> ND_TCHECK2 ( * ( tptr ) , ISIS_SUBTLV_SPB_MCID_MIN_LEN ) ; <S2SV_EndBug> subtlv_spb_mcid = ( const struct isis_subtlv_spb_mcid * ) tptr ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MCID:<S2SV_blank>\" ) ) ; isis_print_mcid ( ndo , & ( subtlv_spb_mcid -> mcid ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AUX-MCID:<S2SV_blank>\" ) ) ; isis_print_mcid ( ndo , & ( subtlv_spb_mcid -> aux_mcid ) ) ; <S2SV_StartBug> tptr = tptr + sizeof ( struct isis_subtlv_spb_mcid ) ; <S2SV_EndBug> len = len - sizeof ( struct isis_subtlv_spb_mcid ) ; break ; } case ISIS_SUBTLV_SPB_DIGEST : { <S2SV_StartBug> ND_TCHECK2 ( * ( tptr ) , ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d<S2SV_blank>V:<S2SV_blank>%d<S2SV_blank>A:<S2SV_blank>%d<S2SV_blank>D:<S2SV_blank>%d\" , ( * ( tptr ) >> 5 ) , ( ( ( * tptr ) >> 4 ) & 0x01 ) , ( ( * ( tptr ) >> 2 ) & 0x03 ) , ( ( * tptr ) & 0x03 ) ) ) ; tptr ++ ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Digest:<S2SV_blank>\" ) ) ; for ( i = 1 ; i <= 8 ; i ++ ) { ND_PRINT ( ( ndo , \"%08x<S2SV_blank>\" , EXTRACT_32BITS ( tptr ) ) ) ; if ( i % 4 == 0 && i != 8 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; tptr = tptr + 4 ; } len = len - ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ; <S2SV_StartBug> break ; <S2SV_EndBug> } case ISIS_SUBTLV_SPB_BVID : { <S2SV_StartBug> ND_TCHECK2 ( * ( tptr ) , stlv_len ) ; <S2SV_EndBug> while ( len >= ISIS_SUBTLV_SPB_BVID_MIN_LEN ) { <S2SV_StartBug> ND_TCHECK2 ( * ( tptr ) , ISIS_SUBTLV_SPB_BVID_MIN_LEN ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ECT:<S2SV_blank>%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr = tptr + 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>BVID:<S2SV_blank>%d,<S2SV_blank>U:%01x<S2SV_blank>M:%01x<S2SV_blank>\" , ( EXTRACT_16BITS ( tptr ) >> 4 ) , ( EXTRACT_16BITS ( tptr ) >> 3 ) & 0x01 , ( EXTRACT_16BITS ( tptr ) >> 2 ) & 0x01 ) ) ; tptr = tptr + 2 ; len = len - ISIS_SUBTLV_SPB_BVID_MIN_LEN ; <S2SV_StartBug> } <S2SV_EndBug> break ; } default : break ; } <S2SV_StartBug> } <S2SV_EndBug> return 0 ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ) { ND_TCHECK2 ( * tptr , 2 ) ; <S2SV_ModStart> len - 2 ; if ( len < stlv_len ) goto trunc ; ND_TCHECK2 ( * ( tptr ) , stlv_len ) <S2SV_ModStart> ISIS_SUBTLV_SPB_MCID : { if ( stlv_len < ISIS_SUBTLV_SPB_MCID_MIN_LEN ) goto trunc <S2SV_ModEnd> ; subtlv_spb_mcid = <S2SV_ModStart> = tptr + ISIS_SUBTLV_SPB_MCID_MIN_LEN ; len = len - ISIS_SUBTLV_SPB_MCID_MIN_LEN ; stlv_len = stlv_len - ISIS_SUBTLV_SPB_MCID_MIN_LEN <S2SV_ModEnd> ; break ; <S2SV_ModStart> ISIS_SUBTLV_SPB_DIGEST : { if ( stlv_len < ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ) goto trunc <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> - ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ; stlv_len = stlv_len - ISIS_SUBTLV_SPB_DIGEST_MIN_LEN ; <S2SV_ModStart> ISIS_SUBTLV_SPB_BVID : { while ( stlv_len <S2SV_ModEnd> >= ISIS_SUBTLV_SPB_BVID_MIN_LEN ) <S2SV_ModStart> ISIS_SUBTLV_SPB_BVID_MIN_LEN ) { <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> - ISIS_SUBTLV_SPB_BVID_MIN_LEN ; stlv_len = stlv_len - ISIS_SUBTLV_SPB_BVID_MIN_LEN ; <S2SV_ModStart> break ; } tptr += stlv_len ; len -= stlv_len ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4700\n\n```\nCWE-17 void bpf_int_jit_compile ( struct bpf_prog * prog ) { struct bpf_binary_header * header = NULL ; int proglen , oldproglen = 0 ; struct jit_context ctx = { } ; u8 * image = NULL ; int * addrs ; int pass ; int i ; if ( ! bpf_jit_enable ) return ; if ( ! prog || ! prog -> len ) return ; addrs = kmalloc ( prog -> len * sizeof ( * addrs ) , GFP_KERNEL ) ; if ( ! addrs ) return ; for ( proglen = 0 , i = 0 ; i < prog -> len ; i ++ ) { proglen += 64 ; addrs [ i ] = proglen ; } ctx . cleanup_addr = proglen ; <S2SV_StartBug> for ( pass = 0 ; pass < 10 ; pass ++ ) { <S2SV_EndBug> proglen = do_jit ( prog , addrs , image , oldproglen , & ctx ) ; if ( proglen <= 0 ) { image = NULL ; if ( header ) bpf_jit_binary_free ( header ) ; goto out ; } if ( image ) { if ( proglen != oldproglen ) { pr_err ( \"bpf_jit:<S2SV_blank>proglen=%d<S2SV_blank>!=<S2SV_blank>oldproglen=%d\\\\n\" , proglen , oldproglen ) ; goto out ; } break ; } if ( proglen == oldproglen ) { header = bpf_jit_binary_alloc ( proglen , & image , 1 , jit_fill_hole ) ; if ( ! header ) goto out ; } oldproglen = proglen ; } if ( bpf_jit_enable > 1 ) bpf_jit_dump ( prog -> len , proglen , 0 , image ) ; if ( image ) { bpf_flush_icache ( header , image + proglen ) ; set_memory_ro ( ( unsigned long ) header , header -> pages ) ; prog -> bpf_func = ( void * ) image ; prog -> jited = true ; } out : kfree ( addrs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pass < 10 || image\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int em_grp45 ( struct x86_emulate_ctxt * ctxt ) { int rc = X86EMUL_CONTINUE ; switch ( ctxt -> modrm_reg ) { case 2 : { long int old_eip ; old_eip = ctxt -> _eip ; <S2SV_StartBug> ctxt -> _eip = ctxt -> src . val ; <S2SV_EndBug> ctxt -> src . val = old_eip ; rc = em_push ( ctxt ) ; break ; } case 4 : <S2SV_StartBug> ctxt -> _eip = ctxt -> src . val ; <S2SV_EndBug> break ; case 5 : rc = em_jmp_far ( ctxt ) ; break ; case 6 : rc = em_push ( ctxt ) ; break ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> _eip ; rc = assign_eip_near ( ctxt , <S2SV_ModEnd> ctxt -> src <S2SV_ModStart> src . val ) ; if ( rc != X86EMUL_CONTINUE ) break <S2SV_ModStart> case 4 : rc = assign_eip_near ( ctxt , <S2SV_ModEnd> ctxt -> src <S2SV_ModStart> src . val )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 static int do_dentry_open ( struct file * f , int ( * open ) ( struct inode * , struct file * ) , const struct cred * cred ) { static const struct file_operations empty_fops = { } ; struct inode * inode ; int error ; f -> f_mode = OPEN_FMODE ( f -> f_flags ) | FMODE_LSEEK | FMODE_PREAD | FMODE_PWRITE ; if ( unlikely ( f -> f_flags & O_PATH ) ) f -> f_mode = FMODE_PATH ; path_get ( & f -> f_path ) ; inode = f -> f_inode = f -> f_path . dentry -> d_inode ; if ( f -> f_mode & FMODE_WRITE ) { error = __get_file_write_access ( inode , f -> f_path . mnt ) ; if ( error ) goto cleanup_file ; if ( ! special_file ( inode -> i_mode ) ) file_take_write ( f ) ; } f -> f_mapping = inode -> i_mapping ; <S2SV_StartBug> file_sb_list_add ( f , inode -> i_sb ) ; <S2SV_EndBug> if ( unlikely ( f -> f_mode & FMODE_PATH ) ) { f -> f_op = & empty_fops ; return 0 ; } f -> f_op = fops_get ( inode -> i_fop ) ; if ( unlikely ( WARN_ON ( ! f -> f_op ) ) ) { error = - ENODEV ; goto cleanup_all ; } error = security_file_open ( f , cred ) ; if ( error ) goto cleanup_all ; error = break_lease ( inode , f -> f_flags ) ; if ( error ) goto cleanup_all ; if ( ! open ) open = f -> f_op -> open ; if ( open ) { error = open ( inode , f ) ; if ( error ) goto cleanup_all ; } if ( ( f -> f_mode & ( FMODE_READ | FMODE_WRITE ) ) == FMODE_READ ) i_readcount_inc ( inode ) ; f -> f_flags &= ~ ( O_CREAT | O_EXCL | O_NOCTTY | O_TRUNC ) ; file_ra_state_init ( & f -> f_ra , f -> f_mapping -> host -> i_mapping ) ; return 0 ; cleanup_all : fops_put ( f -> f_op ) ; <S2SV_StartBug> file_sb_list_del ( f ) ; <S2SV_EndBug> if ( f -> f_mode & FMODE_WRITE ) { put_write_access ( inode ) ; if ( ! special_file ( inode -> i_mode ) ) { file_reset_write ( f ) ; __mnt_drop_write ( f -> f_path . mnt ) ; } } cleanup_file : path_put ( & f -> f_path ) ; f -> f_path . mnt = NULL ; f -> f_path . dentry = NULL ; f -> f_inode = NULL ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> i_mapping ; <S2SV_ModEnd> if ( unlikely <S2SV_ModStart> f_op ) ; <S2SV_ModEnd> if ( f\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int dccp_v4_connect ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { const struct sockaddr_in * usin = ( struct sockaddr_in * ) uaddr ; struct inet_sock * inet = inet_sk ( sk ) ; struct dccp_sock * dp = dccp_sk ( sk ) ; __be16 orig_sport , orig_dport ; __be32 daddr , nexthop ; struct flowi4 fl4 ; struct rtable * rt ; <S2SV_StartBug> int err ; <S2SV_EndBug> dp -> dccps_role = DCCP_ROLE_CLIENT ; if ( addr_len < sizeof ( struct sockaddr_in ) ) return - EINVAL ; if ( usin -> sin_family != AF_INET ) return - EAFNOSUPPORT ; nexthop = daddr = usin -> sin_addr . s_addr ; <S2SV_StartBug> if ( inet -> opt != NULL && inet -> opt -> srr ) { <S2SV_EndBug> if ( daddr == 0 ) return - EINVAL ; <S2SV_StartBug> nexthop = inet -> opt -> faddr ; <S2SV_EndBug> } orig_sport = inet -> inet_sport ; orig_dport = usin -> sin_port ; rt = ip_route_connect ( & fl4 , nexthop , inet -> inet_saddr , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if , IPPROTO_DCCP , orig_sport , orig_dport , sk , true ) ; if ( IS_ERR ( rt ) ) return PTR_ERR ( rt ) ; if ( rt -> rt_flags & ( RTCF_MULTICAST | RTCF_BROADCAST ) ) { ip_rt_put ( rt ) ; return - ENETUNREACH ; } <S2SV_StartBug> if ( inet -> opt == NULL || ! inet -> opt -> srr ) <S2SV_EndBug> daddr = rt -> rt_dst ; if ( inet -> inet_saddr == 0 ) inet -> inet_saddr = rt -> rt_src ; inet -> inet_rcv_saddr = inet -> inet_saddr ; inet -> inet_dport = usin -> sin_port ; inet -> inet_daddr = daddr ; inet_csk ( sk ) -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( inet -> opt != NULL ) <S2SV_EndBug> inet_csk ( sk ) -> icsk_ext_hdr_len = inet -> opt -> optlen ; dccp_set_state ( sk , DCCP_REQUESTING ) ; err = inet_hash_connect ( & dccp_death_row , sk ) ; if ( err != 0 ) goto failure ; rt = ip_route_newports ( & fl4 , rt , orig_sport , orig_dport , inet -> inet_sport , inet -> inet_dport , sk ) ; if ( IS_ERR ( rt ) ) { rt = NULL ; goto failure ; } sk_setup_caps ( sk , & rt -> dst ) ; dp -> dccps_iss = secure_dccp_sequence_number ( inet -> inet_saddr , inet -> inet_daddr , inet -> inet_sport , inet -> inet_dport ) ; inet -> inet_id = dp -> dccps_iss ^ jiffies ; err = dccp_connect ( sk ) ; rt = NULL ; if ( err != 0 ) goto failure ; out : return err ; failure : dccp_set_state ( sk , DCCP_CLOSED ) ; ip_rt_put ( rt ) ; sk -> sk_route_caps = 0 ; inet -> inet_dport = 0 ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int err ; struct ip_options_rcu * inet_opt <S2SV_ModStart> . s_addr ; inet_opt = rcu_dereference_protected ( inet -> inet_opt , sock_owned_by_user ( sk ) ) ; if ( inet_opt <S2SV_ModEnd> != NULL && <S2SV_ModStart> != NULL && inet_opt -> opt . <S2SV_ModEnd> srr ) { <S2SV_ModStart> ; nexthop = inet_opt -> opt . <S2SV_ModEnd> faddr ; } <S2SV_ModStart> } if ( inet_opt <S2SV_ModEnd> == NULL || <S2SV_ModStart> NULL || ! inet_opt -> opt . <S2SV_ModEnd> srr ) daddr <S2SV_ModStart> ; if ( inet_opt ) inet_csk ( sk ) -> icsk_ext_hdr_len = inet_opt -> opt . <S2SV_ModEnd> optlen ; dccp_set_state\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 const char * util_acl_to_str ( const sc_acl_entry_t * e ) { static char line [ 80 ] , buf [ 20 ] ; unsigned int acl ; if ( e == NULL ) return \"N/A\" ; line [ 0 ] = 0 ; while ( e != NULL ) { acl = e -> method ; switch ( acl ) { case SC_AC_UNKNOWN : return \"N/A\" ; case SC_AC_NEVER : return \"NEVR\" ; case SC_AC_NONE : return \"NONE\" ; case SC_AC_CHV : strcpy ( buf , \"CHV\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 3 , \"%d\" , e -> key_ref ) ; break ; case SC_AC_TERM : strcpy ( buf , \"TERM\" ) ; break ; case SC_AC_PRO : strcpy ( buf , \"PROT\" ) ; break ; case SC_AC_AUT : strcpy ( buf , \"AUTH\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 4 , \"%d\" , e -> key_ref ) ; break ; case SC_AC_SEN : strcpy ( buf , \"Sec.Env.<S2SV_blank>\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 3 , \"#%d\" , e -> key_ref ) ; break ; case SC_AC_SCB : strcpy ( buf , \"Sec.ControlByte<S2SV_blank>\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 3 , \"Ox%X\" , e -> key_ref ) ; break ; case SC_AC_IDA : strcpy ( buf , \"PKCS#15<S2SV_blank>AuthID<S2SV_blank>\" ) ; if ( e -> key_ref != SC_AC_KEY_REF_NONE ) sprintf ( buf + 3 , \"#%d\" , e -> key_ref ) ; break ; default : strcpy ( buf , \"????\" ) ; break ; } <S2SV_StartBug> strcat ( line , buf ) ; <S2SV_EndBug> <S2SV_StartBug> strcat ( line , \"<S2SV_blank>\" ) ; <S2SV_EndBug> e = e -> next ; } <S2SV_StartBug> line [ strlen ( line ) - 1 ] = 0 ; <S2SV_EndBug> return line ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } strncat ( line , buf , sizeof line ) ; strncat <S2SV_ModEnd> ( line , <S2SV_ModStart> line , \"<S2SV_blank>\" , sizeof line <S2SV_ModStart> } line [ ( sizeof <S2SV_ModEnd> line ) - <S2SV_ModStart> 1 ] = '\\\\0' ; line [ strlen ( line ) - 1 ] =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10093\n\n```\nCWE-190 DECLAREreadFunc ( readContigTilesIntoBuffer ) { int status = 1 ; tsize_t tilesize = TIFFTileSize ( in ) ; tdata_t tilebuf ; uint32 imagew = TIFFScanlineSize ( in ) ; uint32 tilew = TIFFTileRowSize ( in ) ; <S2SV_StartBug> int iskew = imagew - tilew ; <S2SV_EndBug> uint8 * bufp = ( uint8 * ) buf ; uint32 tw , tl ; uint32 row ; ( void ) spp ; tilebuf = _TIFFmalloc ( tilesize ) ; if ( tilebuf == 0 ) return 0 ; _TIFFmemset ( tilebuf , 0 , tilesize ) ; ( void ) TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tw ) ; ( void ) TIFFGetField ( in , TIFFTAG_TILELENGTH , & tl ) ; for ( row = 0 ; row < imagelength ; row += tl ) { uint32 nrow = ( row + tl > imagelength ) ? imagelength - row : tl ; uint32 colb = 0 ; uint32 col ; for ( col = 0 ; col < imagewidth && colb < imagew ; col += tw ) { if ( TIFFReadTile ( in , tilebuf , col , row , 0 , 0 ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>tile<S2SV_blank>at<S2SV_blank>%lu<S2SV_blank>%lu\" , ( unsigned long ) col , ( unsigned long ) row ) ; status = 0 ; goto done ; } <S2SV_StartBug> if ( colb + tilew > imagew ) { <S2SV_EndBug> uint32 width = imagew - colb ; uint32 oskew = tilew - width ; cpStripToTile ( bufp + colb , tilebuf , nrow , width , oskew + iskew , oskew ) ; } else cpStripToTile ( bufp + colb , tilebuf , nrow , tilew , iskew , 0 ) ; colb += tilew ; } bufp += imagew * nrow ; } done : _TIFFfree ( tilebuf ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in ) ; int64 iskew = ( int64 ) imagew - ( int64 ) <S2SV_ModEnd> tilew ; uint8 <S2SV_ModStart> if ( colb > iskew <S2SV_ModEnd> ) { uint32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15945\n\n```\nCWE-000 LUA_API void lua_sethook ( lua_State * L , lua_Hook func , int mask , int count ) { if ( func == NULL || mask == 0 ) { mask = 0 ; func = NULL ; } <S2SV_StartBug> if ( isLua ( L -> ci ) ) <S2SV_EndBug> L -> oldpc = L -> ci -> u . l . savedpc ; L -> hook = func ; L -> basehookcount = count ; resethookcount ( L ) ; L -> hookmask = cast_byte ( mask ) ; if ( mask ) settraps ( L -> ci ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } <S2SV_ModEnd> L -> hook\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int store_icy ( URLContext * h , int size ) { HTTPContext * s = h -> priv_data ; <S2SV_StartBug> int remaining = s -> icy_metaint - s -> icy_data_read ; <S2SV_EndBug> if ( remaining < 0 ) return AVERROR_INVALIDDATA ; if ( ! remaining ) { uint8_t ch ; int len = http_read_stream_all ( h , & ch , 1 ) ; if ( len < 0 ) return len ; if ( ch > 0 ) { char data [ 255 * 16 + 1 ] ; int ret ; len = ch * 16 ; ret = http_read_stream_all ( h , data , len ) ; if ( ret < 0 ) return ret ; data [ len + 1 ] = 0 ; if ( ( ret = av_opt_set ( s , \"icy_metadata_packet\" , data , 0 ) ) < 0 ) return ret ; update_metadata ( s , data ) ; } s -> icy_data_read = 0 ; remaining = s -> icy_metaint ; } return FFMIN ( size , remaining ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> priv_data ; uint64_t remaining ; if ( s -> icy_metaint < s -> icy_data_read ) return AVERROR_INVALIDDATA ; <S2SV_ModEnd> remaining = s <S2SV_ModStart> s -> icy_data_read <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15594\n\n```\nCWE-200 unsigned paravirt_patch_jmp ( void * insnbuf , const void * target , unsigned long addr , unsigned len ) { struct branch * b = insnbuf ; unsigned long delta = ( unsigned long ) target - ( addr + 5 ) ; <S2SV_StartBug> if ( len < 5 ) <S2SV_EndBug> <S2SV_StartBug> return len ; <S2SV_EndBug> b -> opcode = 0xe9 ; b -> delta = delta ; return 5 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 5 ) { # ifdef CONFIG_RETPOLINE WARN_ONCE ( \"Failing<S2SV_blank>to<S2SV_blank>patch<S2SV_blank>indirect<S2SV_blank>JMP<S2SV_blank>in<S2SV_blank>%ps\\\\n\" , ( void * ) addr ) ; # endif <S2SV_ModStart> return len ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int64_t http_seek_internal ( URLContext * h , int64_t off , int whence , int force_reconnect ) { HTTPContext * s = h -> priv_data ; URLContext * old_hd = s -> hd ; <S2SV_StartBug> int64_t old_off = s -> off ; <S2SV_EndBug> uint8_t old_buf [ BUFFER_SIZE ] ; int old_buf_size , ret ; AVDictionary * options = NULL ; if ( whence == AVSEEK_SIZE ) return s -> filesize ; else if ( ! force_reconnect && ( ( whence == SEEK_CUR && off == 0 ) || ( whence == SEEK_SET && off == s -> off ) ) ) return s -> off ; <S2SV_StartBug> else if ( ( s -> filesize == - 1 && whence == SEEK_END ) ) <S2SV_EndBug> return AVERROR ( ENOSYS ) ; if ( whence == SEEK_CUR ) off += s -> off ; else if ( whence == SEEK_END ) off += s -> filesize ; else if ( whence != SEEK_SET ) return AVERROR ( EINVAL ) ; if ( off < 0 ) return AVERROR ( EINVAL ) ; s -> off = off ; if ( s -> off && h -> is_streamed ) return AVERROR ( ENOSYS ) ; old_buf_size = s -> buf_end - s -> buf_ptr ; memcpy ( old_buf , s -> buf_ptr , old_buf_size ) ; s -> hd = NULL ; if ( ( ret = http_open_cnx ( h , & options ) ) < 0 ) { av_dict_free ( & options ) ; memcpy ( s -> buffer , old_buf , old_buf_size ) ; s -> buf_ptr = s -> buffer ; s -> buf_end = s -> buffer + old_buf_size ; s -> hd = old_hd ; s -> off = old_off ; return ret ; } av_dict_free ( & options ) ; ffurl_close ( old_hd ) ; return off ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> hd ; uint64_t <S2SV_ModEnd> old_off = s <S2SV_ModStart> -> filesize == UINT64_MAX <S2SV_ModEnd> && whence ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 void lxc_execute_bind_init ( struct lxc_conf * conf ) { int ret ; char path [ PATH_MAX ] , destpath [ PATH_MAX ] , * p ; p = choose_init ( conf -> rootfs . mount ) ; if ( p ) { free ( p ) ; return ; } ret = snprintf ( path , PATH_MAX , SBINDIR \"/init.lxc.static\" ) ; if ( ret < 0 || ret >= PATH_MAX ) { WARN ( \"Path<S2SV_blank>name<S2SV_blank>too<S2SV_blank>long<S2SV_blank>searching<S2SV_blank>for<S2SV_blank>lxc.init.static\" ) ; return ; } if ( ! file_exists ( path ) ) { INFO ( \"%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist<S2SV_blank>on<S2SV_blank>host\" , path ) ; return ; } ret = snprintf ( destpath , PATH_MAX , \"%s%s\" , conf -> rootfs . mount , \"/init.lxc.static\" ) ; if ( ret < 0 || ret >= PATH_MAX ) { WARN ( \"Path<S2SV_blank>name<S2SV_blank>too<S2SV_blank>long<S2SV_blank>for<S2SV_blank>container\\'s<S2SV_blank>lxc.init.static\" ) ; return ; } if ( ! file_exists ( destpath ) ) { FILE * pathfile = fopen ( destpath , \"wb\" ) ; if ( ! pathfile ) { SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>mount<S2SV_blank>target<S2SV_blank>\\'%s\\'\" , destpath ) ; return ; } fclose ( pathfile ) ; } <S2SV_StartBug> ret = mount ( path , destpath , \"none\" , MS_BIND , NULL ) ; <S2SV_EndBug> if ( ret < 0 ) SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>bind<S2SV_blank>lxc.init.static<S2SV_blank>into<S2SV_blank>container\" ) ; INFO ( \"lxc.init.static<S2SV_blank>bound<S2SV_blank>into<S2SV_blank>container<S2SV_blank>at<S2SV_blank>%s\" , path ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } ret = safe_mount ( path , destpath , \"none\" , MS_BIND , NULL , conf -> rootfs . mount <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_loopfilter_frame ( VP8_COMP * cpi , VP8_COMMON * cm ) { <S2SV_StartBug> const FRAME_TYPE frame_type = cm -> frame_type ; <S2SV_EndBug> if ( cm -> no_lpf ) { cm -> filter_level = 0 ; } else { struct vpx_usec_timer timer ; vp8_clear_system_state ( ) ; vpx_usec_timer_start ( & timer ) ; <S2SV_StartBug> if ( cpi -> sf . auto_filter == 0 ) <S2SV_EndBug> vp8cx_pick_filter_level_fast ( cpi -> Source , cpi ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> vp8cx_pick_filter_level ( cpi -> Source , cpi ) ; <S2SV_EndBug> if ( cm -> filter_level > 0 ) { vp8cx_set_alt_lf_level ( cpi , cm -> filter_level ) ; } vpx_usec_timer_mark ( & timer ) ; cpi -> time_pick_lpf += vpx_usec_timer_elapsed ( & timer ) ; } # if CONFIG_MULTITHREAD if ( cpi -> b_multi_threaded ) sem_post ( & cpi -> h_event_end_lpf ) ; # endif <S2SV_StartBug> if ( cm -> filter_level > 0 ) <S2SV_EndBug> { vp8_loop_filter_frame ( cm , & cpi -> mb . e_mbd , frame_type ) ; } vp8_yv12_extend_frame_borders ( cm -> frame_to_show ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> frame_type ; int update_any_ref_buffers = 1 ; if ( cpi -> common . refresh_last_frame == 0 && cpi -> common . refresh_golden_frame == 0 && cpi -> common . refresh_alt_ref_frame == 0 ) { update_any_ref_buffers = 0 ; } <S2SV_ModStart> == 0 ) { # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity && cm -> frame_type != KEY_FRAME ) { vp8cx_pick_filter_level_fast ( & cpi -> denoiser . yv12_running_avg [ INTRA_FRAME ] , cpi ) ; } else { vp8cx_pick_filter_level_fast ( <S2SV_ModEnd> cpi -> Source <S2SV_ModStart> cpi ) ; } # else vp8cx_pick_filter_level_fast ( cpi -> Source , cpi ) ; # endif } else { # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity && cm -> frame_type != KEY_FRAME ) { vp8cx_pick_filter_level ( & cpi -> denoiser . yv12_running_avg [ INTRA_FRAME ] , cpi ) ; } else { vp8cx_pick_filter_level ( <S2SV_ModEnd> cpi -> Source <S2SV_ModStart> cpi ) ; } # else vp8cx_pick_filter_level ( cpi -> Source , cpi ) ; # endif } <S2SV_ModStart> filter_level > 0 && update_any_ref_buffers\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int vp8_denoiser_filter_neon ( YV12_BUFFER_CONFIG * mc_running_avg , <S2SV_EndBug> YV12_BUFFER_CONFIG * running_avg , MACROBLOCK * signal , unsigned int motion_magnitude , int y_offset , int uv_offset ) { const uint8x16_t v_level1_adjustment = vdupq_n_u8 ( ( motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD ) ? 4 : 3 ) ; const uint8x16_t v_delta_level_1_and_2 = vdupq_n_u8 ( 1 ) ; const uint8x16_t v_delta_level_2_and_3 = vdupq_n_u8 ( 2 ) ; const uint8x16_t v_level1_threshold = vdupq_n_u8 ( 4 ) ; const uint8x16_t v_level2_threshold = vdupq_n_u8 ( 8 ) ; const uint8x16_t v_level3_threshold = vdupq_n_u8 ( 16 ) ; <S2SV_StartBug> unsigned char * sig = signal -> thismb ; <S2SV_EndBug> int sig_stride = 16 ; unsigned char * mc_running_avg_y = mc_running_avg -> y_buffer + y_offset ; int mc_running_avg_y_stride = mc_running_avg -> y_stride ; unsigned char * running_avg_y = running_avg -> y_buffer + y_offset ; int running_avg_y_stride = running_avg -> y_stride ; int i ; int sum_diff = 0 ; <S2SV_StartBug> for ( i = 0 ; i < 16 ; ++ i ) { <S2SV_EndBug> <S2SV_StartBug> int8x16_t v_sum_diff = vdupq_n_s8 ( 0 ) ; <S2SV_EndBug> uint8x16_t v_running_avg_y ; const uint8x16_t v_sig = vld1q_u8 ( sig ) ; const uint8x16_t v_mc_running_avg_y = vld1q_u8 ( mc_running_avg_y ) ; const uint8x16_t v_abs_diff = vabdq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_diff_pos_mask = vcltq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_diff_neg_mask = vcgtq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_level1_mask = vcleq_u8 ( v_level1_threshold , v_abs_diff ) ; const uint8x16_t v_level2_mask = vcleq_u8 ( v_level2_threshold , v_abs_diff ) ; const uint8x16_t v_level3_mask = vcleq_u8 ( v_level3_threshold , v_abs_diff ) ; const uint8x16_t v_level2_adjustment = vandq_u8 ( v_level2_mask , v_delta_level_1_and_2 ) ; const uint8x16_t v_level3_adjustment = vandq_u8 ( v_level3_mask , v_delta_level_2_and_3 ) ; const uint8x16_t v_level1and2_adjustment = vaddq_u8 ( v_level1_adjustment , v_level2_adjustment ) ; const uint8x16_t v_level1and2and3_adjustment = vaddq_u8 ( v_level1and2_adjustment , v_level3_adjustment ) ; const uint8x16_t v_abs_adjustment = vbslq_u8 ( v_level1_mask , v_level1and2and3_adjustment , v_abs_diff ) ; const uint8x16_t v_pos_adjustment = vandq_u8 ( v_diff_pos_mask , v_abs_adjustment ) ; const uint8x16_t v_neg_adjustment = vandq_u8 ( v_diff_neg_mask , v_abs_adjustment ) ; v_running_avg_y = vqaddq_u8 ( v_sig , v_pos_adjustment ) ; v_running_avg_y = vqsubq_u8 ( v_running_avg_y , v_neg_adjustment ) ; v_sum_diff = vqaddq_s8 ( v_sum_diff , vreinterpretq_s8_u8 ( v_pos_adjustment ) ) ; v_sum_diff = vqsubq_s8 ( v_sum_diff , vreinterpretq_s8_u8 ( v_neg_adjustment ) ) ; vst1q_u8 ( running_avg_y , v_running_avg_y ) ; { int s0 = vgetq_lane_s8 ( v_sum_diff , 0 ) + vgetq_lane_s8 ( v_sum_diff , 1 ) + vgetq_lane_s8 ( v_sum_diff , 2 ) + vgetq_lane_s8 ( v_sum_diff , 3 ) ; int s1 = vgetq_lane_s8 ( v_sum_diff , 4 ) + vgetq_lane_s8 ( v_sum_diff , 5 ) + vgetq_lane_s8 ( v_sum_diff , 6 ) + vgetq_lane_s8 ( v_sum_diff , 7 ) ; int s2 = vgetq_lane_s8 ( v_sum_diff , 8 ) + vgetq_lane_s8 ( v_sum_diff , 9 ) + vgetq_lane_s8 ( v_sum_diff , 10 ) + vgetq_lane_s8 ( v_sum_diff , 11 ) ; int s3 = vgetq_lane_s8 ( v_sum_diff , 12 ) + vgetq_lane_s8 ( v_sum_diff , 13 ) + vgetq_lane_s8 ( v_sum_diff , 14 ) + vgetq_lane_s8 ( v_sum_diff , 15 ) ; sum_diff += s0 + s1 + s2 + s3 ; } sig += sig_stride ; mc_running_avg_y += mc_running_avg_y_stride ; running_avg_y += running_avg_y_stride ; } <S2SV_StartBug> if ( abs ( sum_diff ) > SUM_DIFF_THRESHOLD ) <S2SV_EndBug> return COPY_BLOCK ; <S2SV_StartBug> vp8_copy_mem16x16 ( running_avg -> y_buffer + y_offset , running_avg_y_stride , <S2SV_EndBug> <S2SV_StartBug> signal -> thismb , sig_stride ) ; <S2SV_EndBug> return FILTER_BLOCK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int vp8_denoiser_filter_neon ( unsigned char * mc_running_avg_y , int mc_running_avg_y_stride , unsigned char * running_avg_y , int running_avg_y_stride , <S2SV_ModEnd> unsigned char * <S2SV_ModStart> char * sig , int sig_stride , unsigned int motion_magnitude , int increase_denoising ) { int shift_inc = ( increase_denoising && motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD ) ? 1 : 0 ; const uint8x16_t v_level1_adjustment = vmovq_n_u8 ( ( motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD ) ? 4 + shift_inc : 3 ) ; const uint8x16_t v_delta_level_1_and_2 = vdupq_n_u8 ( 1 ) ; const uint8x16_t v_delta_level_2_and_3 = vdupq_n_u8 ( 2 ) ; const uint8x16_t v_level1_threshold = vmovq_n_u8 ( 4 + shift_inc ) ; const uint8x16_t v_level2_threshold = vdupq_n_u8 ( 8 ) ; const uint8x16_t v_level3_threshold = vdupq_n_u8 ( 16 ) ; int64x2_t v_sum_diff_total = vdupq_n_s64 ( 0 ) ; int r <S2SV_ModEnd> ; for ( <S2SV_ModStart> ; for ( r <S2SV_ModEnd> = 0 ; <S2SV_ModStart> = 0 ; r <S2SV_ModEnd> < 16 ; <S2SV_ModStart> 16 ; ++ r ) { const uint8x16_t v_sig = vld1q_u8 ( sig ) ; const uint8x16_t v_mc_running_avg_y = vld1q_u8 ( mc_running_avg_y ) ; const uint8x16_t v_abs_diff = vabdq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_diff_pos_mask = vcltq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_diff_neg_mask = vcgtq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_level1_mask = vcleq_u8 ( v_level1_threshold , v_abs_diff ) ; const uint8x16_t v_level2_mask = vcleq_u8 ( v_level2_threshold , v_abs_diff ) ; const uint8x16_t v_level3_mask = vcleq_u8 ( v_level3_threshold , v_abs_diff ) ; const uint8x16_t v_level2_adjustment = vandq_u8 ( v_level2_mask , v_delta_level_1_and_2 ) ; const uint8x16_t v_level3_adjustment = vandq_u8 ( v_level3_mask , v_delta_level_2_and_3 ) ; const uint8x16_t v_level1and2_adjustment = vaddq_u8 ( v_level1_adjustment , v_level2_adjustment ) ; const uint8x16_t v_level1and2and3_adjustment = vaddq_u8 ( v_level1and2_adjustment , v_level3_adjustment ) ; const uint8x16_t v_abs_adjustment = vbslq_u8 ( v_level1_mask , v_level1and2and3_adjustment , v_abs_diff ) ; const uint8x16_t v_pos_adjustment = vandq_u8 ( v_diff_pos_mask , v_abs_adjustment ) ; const uint8x16_t v_neg_adjustment = vandq_u8 ( v_diff_neg_mask , v_abs_adjustment ) ; uint8x16_t v_running_avg_y = vqaddq_u8 ( v_sig , v_pos_adjustment ) ; v_running_avg_y = vqsubq_u8 ( v_running_avg_y , v_neg_adjustment ) ; vst1q_u8 ( running_avg_y , v_running_avg_y ) ; { const <S2SV_ModEnd> int8x16_t v_sum_diff = <S2SV_ModStart> int8x16_t v_sum_diff = vqsubq_s8 ( vreinterpretq_s8_u8 ( v_pos_adjustment ) , vreinterpretq_s8_u8 ( v_neg_adjustment ) ) ; const int16x8_t fe_dc_ba_98_76_54_32_10 = vpaddlq_s8 ( v_sum_diff ) ; const int32x4_t fedc_ba98_7654_3210 = vpaddlq_s16 ( fe_dc_ba_98_76_54_32_10 ) ; const int64x2_t fedcba98_76543210 = vpaddlq_s32 ( fedc_ba98_7654_3210 ) ; v_sum_diff_total = vqaddq_s64 ( v_sum_diff_total , fedcba98_76543210 ) <S2SV_ModEnd> ; } sig <S2SV_ModStart> running_avg_y_stride ; } { int64x1_t x = vqadd_s64 ( vget_high_s64 ( v_sum_diff_total ) , vget_low_s64 ( v_sum_diff_total ) ) ; int sum_diff = vget_lane_s32 ( vabs_s32 ( vreinterpret_s32_s64 ( x ) ) , 0 ) ; int sum_diff_thresh = SUM_DIFF_THRESHOLD ; if ( increase_denoising ) sum_diff_thresh = SUM_DIFF_THRESHOLD_HIGH ; if ( sum_diff > sum_diff_thresh ) { int delta = ( ( sum_diff - sum_diff_thresh ) >> 8 ) + 1 ; if ( delta < 4 ) { const uint8x16_t k_delta = vmovq_n_u8 ( delta ) ; sig -= sig_stride * 16 ; mc_running_avg_y -= mc_running_avg_y_stride * 16 ; running_avg_y -= running_avg_y_stride * 16 ; for ( r = 0 ; r < 16 ; ++ r ) { uint8x16_t v_running_avg_y = vld1q_u8 ( running_avg_y ) ; const uint8x16_t v_sig = vld1q_u8 ( sig ) ; const uint8x16_t v_mc_running_avg_y = vld1q_u8 ( mc_running_avg_y ) ; const uint8x16_t v_abs_diff = vabdq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_diff_pos_mask = vcltq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_diff_neg_mask = vcgtq_u8 ( v_sig , v_mc_running_avg_y ) ; const uint8x16_t v_abs_adjustment = vminq_u8 ( v_abs_diff , ( k_delta ) ) ; const uint8x16_t v_pos_adjustment = vandq_u8 ( v_diff_pos_mask , v_abs_adjustment ) ; const uint8x16_t v_neg_adjustment = vandq_u8 ( v_diff_neg_mask , v_abs_adjustment ) ; v_running_avg_y = vqsubq_u8 ( v_running_avg_y , v_pos_adjustment ) ; v_running_avg_y = vqaddq_u8 ( v_running_avg_y , v_neg_adjustment ) ; vst1q_u8 ( running_avg_y , v_running_avg_y ) ; { const int8x16_t v_sum_diff = vqsubq_s8 ( vreinterpretq_s8_u8 ( v_neg_adjustment ) , vreinterpretq_s8_u8 ( v_pos_adjustment ) ) ; const int16x8_t fe_dc_ba_98_76_54_32_10 = vpaddlq_s8 ( v_sum_diff ) ; const int32x4_t fedc_ba98_7654_3210 = vpaddlq_s16 ( fe_dc_ba_98_76_54_32_10 ) ; const int64x2_t fedcba98_76543210 = vpaddlq_s32 ( fedc_ba98_7654_3210 ) ; v_sum_diff_total = vqaddq_s64 ( v_sum_diff_total , fedcba98_76543210 ) ; } sig += sig_stride ; mc_running_avg_y += mc_running_avg_y_stride ; running_avg_y += running_avg_y_stride ; } { x = vqadd_s64 ( vget_high_s64 ( v_sum_diff_total ) , vget_low_s64 ( v_sum_diff_total ) ) ; sum_diff = vget_lane_s32 ( vabs_s32 ( vreinterpret_s32_s64 ( x ) ) , 0 ) ; if ( sum_diff > sum_diff_thresh ) { <S2SV_ModEnd> return COPY_BLOCK ; <S2SV_ModStart> return COPY_BLOCK ; } } } else { return COPY_BLOCK ; } } } running_avg_y -= running_avg_y_stride * 16 ; sig -= sig_stride * 16 ; vp8_copy_mem16x16 ( running_avg_y <S2SV_ModEnd> , running_avg_y_stride , <S2SV_ModStart> , running_avg_y_stride , sig <S2SV_ModEnd> , sig_stride )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2008-7316\n\n```\nCWE-20 static ssize_t generic_perform_write ( struct file * file , struct iov_iter * i , loff_t pos ) { struct address_space * mapping = file -> f_mapping ; const struct address_space_operations * a_ops = mapping -> a_ops ; long status = 0 ; ssize_t written = 0 ; unsigned int flags = 0 ; if ( segment_eq ( get_fs ( ) , KERNEL_DS ) ) flags |= AOP_FLAG_UNINTERRUPTIBLE ; do { struct page * page ; pgoff_t index ; unsigned long offset ; unsigned long bytes ; size_t copied ; void * fsdata ; offset = ( pos & ( PAGE_CACHE_SIZE - 1 ) ) ; index = pos >> PAGE_CACHE_SHIFT ; bytes = min_t ( unsigned long , PAGE_CACHE_SIZE - offset , iov_iter_count ( i ) ) ; again : if ( unlikely ( iov_iter_fault_in_readable ( i , bytes ) ) ) { status = - EFAULT ; break ; } status = a_ops -> write_begin ( file , mapping , pos , bytes , flags , & page , & fsdata ) ; if ( unlikely ( status ) ) break ; pagefault_disable ( ) ; copied = iov_iter_copy_from_user_atomic ( page , i , offset , bytes ) ; pagefault_enable ( ) ; flush_dcache_page ( page ) ; status = a_ops -> write_end ( file , mapping , pos , bytes , copied , page , fsdata ) ; if ( unlikely ( status < 0 ) ) break ; copied = status ; cond_resched ( ) ; <S2SV_StartBug> if ( unlikely ( copied == 0 ) ) { <S2SV_EndBug> bytes = min_t ( unsigned long , PAGE_CACHE_SIZE - offset , iov_iter_single_seg_count ( i ) ) ; goto again ; } <S2SV_StartBug> iov_iter_advance ( i , copied ) ; <S2SV_EndBug> pos += copied ; written += copied ; balance_dirty_pages_ratelimited ( mapping ) ; } while ( iov_iter_count ( i ) ) ; return written ? written : status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; iov_iter_advance ( i , copied ) ; <S2SV_ModStart> again ; } <S2SV_ModEnd> pos += copied\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010292\n\n```\nCWE-119 static TEE_Result set_rmem_param ( const struct optee_msg_param_rmem * rmem , struct param_mem * mem ) <S2SV_StartBug> { <S2SV_EndBug> uint64_t shm_ref = READ_ONCE ( rmem -> shm_ref ) ; mem -> mobj = mobj_reg_shm_get_by_cookie ( shm_ref ) ; if ( ! mem -> mobj ) return TEE_ERROR_BAD_PARAMETERS ; mem -> offs = READ_ONCE ( rmem -> offs ) ; mem -> size = READ_ONCE ( rmem -> size ) ; <S2SV_StartBug> return TEE_SUCCESS ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mem ) { size_t req_size = 0 ; <S2SV_ModStart> size ) ; if ( ADD_OVERFLOW ( mem -> offs , mem -> size , & req_size ) || mem -> mobj -> size < req_size ) return TEE_ERROR_SECURITY ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12713\n\n```\nCWE-20 static void gimp_write_and_read_file ( Gimp * gimp , gboolean with_unusual_stuff , gboolean compat_paths , gboolean use_gimp_2_8_features ) { GimpImage * image ; GimpImage * loaded_image ; GimpPlugInProcedure * proc ; <S2SV_StartBug> gchar * filename ; <S2SV_EndBug> GFile * file ; image = gimp_create_mainimage ( gimp , with_unusual_stuff , compat_paths , use_gimp_2_8_features ) ; gimp_assert_mainimage ( image , with_unusual_stuff , compat_paths , use_gimp_2_8_features ) ; <S2SV_StartBug> filename = g_build_filename ( g_get_tmp_dir ( ) , \"gimp-test.xcf\" , NULL ) ; <S2SV_EndBug> file = g_file_new_for_path ( filename ) ; g_free ( filename ) ; proc = gimp_plug_in_manager_file_procedure_find ( image -> gimp -> plug_in_manager , GIMP_FILE_PROCEDURE_GROUP_SAVE , file , NULL ) ; file_save ( gimp , image , NULL , file , proc , GIMP_RUN_NONINTERACTIVE , FALSE , FALSE , FALSE , NULL ) ; loaded_image = gimp_test_load_image ( image -> gimp , file ) ; gimp_assert_mainimage ( loaded_image , with_unusual_stuff , compat_paths , use_gimp_2_8_features ) ; g_file_delete ( file , NULL , NULL ) ; g_object_unref ( file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gchar * filename = NULL ; gint file_handle <S2SV_ModStart> use_gimp_2_8_features ) ; file_handle = g_file_open_tmp ( \"gimp-test-XXXXXX.xcf\" , & filename , NULL ) ; g_assert ( file_handle != - 1 ) ; close ( file_handle <S2SV_ModEnd> ) ; file\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9421\n\n```\nCWE-000 bool_t auth_gssapi_unwrap_data ( OM_uint32 * major , OM_uint32 * minor , gss_ctx_id_t context , uint32_t seq_num , XDR * in_xdrs , bool_t ( * xdr_func ) ( ) , caddr_t xdr_ptr ) { gss_buffer_desc in_buf , out_buf ; XDR temp_xdrs ; uint32_t verf_seq_num ; int conf , qop ; unsigned int length ; PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>starting\\\\n\" ) ) ; * major = GSS_S_COMPLETE ; * minor = 0 ; in_buf . value = NULL ; out_buf . value = NULL ; if ( ! xdr_bytes ( in_xdrs , ( char * * ) & in_buf . value , & length , ( unsigned int ) - 1 ) ) { PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>deserializing<S2SV_blank>encrypted<S2SV_blank>data<S2SV_blank>failed\\\\n\" ) ) ; temp_xdrs . x_op = XDR_FREE ; ( void ) xdr_bytes ( & temp_xdrs , ( char * * ) & in_buf . value , & length , ( unsigned int ) - 1 ) ; return FALSE ; } in_buf . length = length ; * major = gss_unseal ( minor , context , & in_buf , & out_buf , & conf , & qop ) ; free ( in_buf . value ) ; if ( * major != GSS_S_COMPLETE ) return FALSE ; PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>%llu<S2SV_blank>bytes<S2SV_blank>data,<S2SV_blank>%llu<S2SV_blank>bytes<S2SV_blank>sealed\\\\n\" , ( unsigned long long ) out_buf . length , ( unsigned long long ) in_buf . length ) ) ; xdrmem_create ( & temp_xdrs , out_buf . value , out_buf . length , XDR_DECODE ) ; if ( ! xdr_u_int32 ( & temp_xdrs , & verf_seq_num ) ) { PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>deserializing<S2SV_blank>verf_seq_num<S2SV_blank>failed\\\\n\" ) ) ; gss_release_buffer ( minor , & out_buf ) ; XDR_DESTROY ( & temp_xdrs ) ; return FALSE ; } if ( verf_seq_num != seq_num ) { PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>seq<S2SV_blank>%d<S2SV_blank>specified,<S2SV_blank>read<S2SV_blank>%d\\\\n\" , seq_num , verf_seq_num ) ) ; gss_release_buffer ( minor , & out_buf ) ; XDR_DESTROY ( & temp_xdrs ) ; return FALSE ; } PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>unwrap<S2SV_blank>seq_num<S2SV_blank>%d<S2SV_blank>okay\\\\n\" , verf_seq_num ) ) ; if ( ! ( * xdr_func ) ( & temp_xdrs , xdr_ptr ) ) { PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>deserializing<S2SV_blank>arguments<S2SV_blank>failed\\\\n\" ) ) ; gss_release_buffer ( minor , & out_buf ) ; <S2SV_StartBug> xdr_free ( xdr_func , xdr_ptr ) ; <S2SV_EndBug> XDR_DESTROY ( & temp_xdrs ) ; return FALSE ; } PRINTF ( ( \"gssapi_unwrap_data:<S2SV_blank>succeeding\\\\n\\\\n\" ) ) ; gss_release_buffer ( minor , & out_buf ) ; XDR_DESTROY ( & temp_xdrs ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_buf ) ; <S2SV_ModEnd> XDR_DESTROY ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0207\n\n```\nCWE-119 ssize_t cdf_read_short_sector ( const cdf_stream_t * sst , void * buf , size_t offs , size_t len , const cdf_header_t * h , cdf_secid_t id ) { size_t ss = CDF_SHORT_SEC_SIZE ( h ) ; size_t pos = CDF_SHORT_SEC_POS ( h , id ) ; assert ( ss == len ) ; <S2SV_StartBug> if ( pos > CDF_SEC_SIZE ( h ) * sst -> sst_len ) { <S2SV_EndBug> DPRINTF ( ( \"Out<S2SV_blank>of<S2SV_blank>bounds<S2SV_blank>read<S2SV_blank>%\" SIZE_T_FORMAT \"u<S2SV_blank>><S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , <S2SV_StartBug> pos , CDF_SEC_SIZE ( h ) * sst -> sst_len ) ) ; <S2SV_EndBug> return - 1 ; } ( void ) memcpy ( ( ( char * ) buf ) + offs , ( ( const char * ) sst -> sst_tab ) + pos , len ) ; return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( pos + len <S2SV_ModStart> \"u\\\\n\" , pos + len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15296\n\n```\nCWE-119 static uint8_t excluded_channels ( bitfile * ld , drc_info * drc ) { uint8_t i , n = 0 ; uint8_t num_excl_chan = 7 ; for ( i = 0 ; i < 7 ; i ++ ) { drc -> exclude_mask [ i ] = faad_get1bit ( ld DEBUGVAR ( 1 , 103 , \"excluded_channels():<S2SV_blank>exclude_mask\" ) ) ; } n ++ ; while ( ( drc -> additional_excluded_chns [ n - 1 ] = faad_get1bit ( ld DEBUGVAR ( 1 , 104 , \"excluded_channels():<S2SV_blank>additional_excluded_chns\" ) ) ) == 1 ) { <S2SV_StartBug> for ( i = num_excl_chan ; i < num_excl_chan + 7 ; i ++ ) <S2SV_EndBug> { drc -> exclude_mask [ i ] = faad_get1bit ( ld DEBUGVAR ( 1 , 105 , \"excluded_channels():<S2SV_blank>exclude_mask\" ) ) ; } n ++ ; num_excl_chan += 7 ; } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) { if ( i >= MAX_CHANNELS - num_excl_chan - 7 ) return n ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t vp8_set_decryptor ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctrl_id , <S2SV_EndBug> va_list args ) { <S2SV_StartBug> vp8_decrypt_init * init = va_arg ( args , vp8_decrypt_init * ) ; <S2SV_EndBug> if ( init ) { ctx -> decrypt_cb = init -> decrypt_cb ; ctx -> decrypt_state = init -> decrypt_state ; } else { ctx -> decrypt_cb = NULL ; ctx -> decrypt_state = NULL ; } return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> args ) { vpx_decrypt_init <S2SV_ModEnd> * init = <S2SV_ModStart> ( args , vpx_decrypt_init <S2SV_ModEnd> * ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3132\n\n```\nCWE-415 SPL_METHOD ( SplDoublyLinkedList , offsetSet ) { zval * zindex , * value ; spl_dllist_object * intern ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) , \"zz\" , & zindex , & value ) == FAILURE ) { return ; } intern = Z_SPLDLLIST_P ( getThis ( ) ) ; if ( Z_TYPE_P ( zindex ) == IS_NULL ) { spl_ptr_llist_push ( intern -> llist , value ) ; } else { zend_long index ; spl_ptr_llist_element * element ; index = spl_offset_convert_to_long ( zindex ) ; if ( index < 0 || index >= intern -> llist -> count ) { <S2SV_StartBug> zval_ptr_dtor ( value ) ; <S2SV_EndBug> zend_throw_exception ( spl_ce_OutOfRangeException , \"Offset<S2SV_blank>invalid<S2SV_blank>or<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\" , 0 ) ; return ; } element = spl_ptr_llist_offset ( intern -> llist , index , intern -> flags & SPL_DLLIST_IT_LIFO ) ; if ( element != NULL ) { if ( intern -> llist -> dtor ) { intern -> llist -> dtor ( element ) ; } zval_ptr_dtor ( & element -> data ) ; ZVAL_COPY_VALUE ( & element -> data , value ) ; if ( intern -> llist -> ctor ) { intern -> llist -> ctor ( element ) ; } } else { zval_ptr_dtor ( value ) ; zend_throw_exception ( spl_ce_OutOfRangeException , \"Offset<S2SV_blank>invalid\" , 0 ) ; return ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count ) { <S2SV_ModEnd> zend_throw_exception ( spl_ce_OutOfRangeException\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static void nfs4_open_prepare ( struct rpc_task * task , void * calldata ) { struct nfs4_opendata * data = calldata ; struct nfs4_state_owner * sp = data -> owner ; if ( nfs_wait_on_sequence ( data -> o_arg . seqid , task ) != 0 ) return ; if ( data -> state != NULL ) { struct nfs_delegation * delegation ; <S2SV_StartBug> if ( can_open_cached ( data -> state , data -> o_arg . open_flags & ( FMODE_READ | FMODE_WRITE | O_EXCL ) ) ) <S2SV_EndBug> goto out_no_action ; rcu_read_lock ( ) ; delegation = rcu_dereference ( NFS_I ( data -> state -> inode ) -> delegation ) ; if ( delegation != NULL && test_bit ( NFS_DELEGATION_NEED_RECLAIM , & delegation -> flags ) == 0 ) { rcu_read_unlock ( ) ; goto out_no_action ; } rcu_read_unlock ( ) ; } data -> o_arg . id = sp -> so_owner_id . id ; data -> o_arg . clientid = sp -> so_client -> cl_clientid ; if ( data -> o_arg . claim == NFS4_OPEN_CLAIM_PREVIOUS ) { task -> tk_msg . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_OPEN_NOATTR ] ; nfs_copy_fh ( & data -> o_res . fh , data -> o_arg . fh ) ; } data -> timestamp = jiffies ; rpc_call_start ( task ) ; return ; out_no_action : task -> tk_action = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> o_arg . fmode , data -> o_arg . open_flags <S2SV_ModEnd> ) ) goto\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6544\n\n```\nCWE-200 static int hci_sock_getsockopt ( struct socket * sock , int level , int optname , char __user * optval , int __user * optlen ) { struct hci_ufilter uf ; struct sock * sk = sock -> sk ; int len , opt , err = 0 ; BT_DBG ( \"sk<S2SV_blank>%p,<S2SV_blank>opt<S2SV_blank>%d\" , sk , optname ) ; if ( get_user ( len , optlen ) ) return - EFAULT ; lock_sock ( sk ) ; if ( hci_pi ( sk ) -> channel != HCI_CHANNEL_RAW ) { err = - EINVAL ; goto done ; } switch ( optname ) { case HCI_DATA_DIR : if ( hci_pi ( sk ) -> cmsg_mask & HCI_CMSG_DIR ) opt = 1 ; else opt = 0 ; if ( put_user ( opt , optval ) ) err = - EFAULT ; break ; case HCI_TIME_STAMP : if ( hci_pi ( sk ) -> cmsg_mask & HCI_CMSG_TSTAMP ) opt = 1 ; else opt = 0 ; if ( put_user ( opt , optval ) ) err = - EFAULT ; break ; case HCI_FILTER : { <S2SV_StartBug> struct hci_filter * f = & hci_pi ( sk ) -> filter ; <S2SV_EndBug> uf . type_mask = f -> type_mask ; uf . opcode = f -> opcode ; uf . event_mask [ 0 ] = * ( ( u32 * ) f -> event_mask + 0 ) ; uf . event_mask [ 1 ] = * ( ( u32 * ) f -> event_mask + 1 ) ; } len = min_t ( unsigned int , len , sizeof ( uf ) ) ; if ( copy_to_user ( optval , & uf , len ) ) err = - EFAULT ; break ; default : err = - ENOPROTOOPT ; break ; } done : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) -> filter ; memset ( & uf , 0 , sizeof ( uf ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_CreateTrue ( void ) { cJSON * item = cJSON_New_Item ( ) ; if ( item ) item -> type = cJSON_True ; return item ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8067\n\n```\nCWE-119 static int put_chars ( u32 vtermno , const char * buf , int count ) { struct port * port ; <S2SV_StartBug> struct scatterlist sg [ 1 ] ; <S2SV_EndBug> if ( unlikely ( early_put_chars ) ) return early_put_chars ( vtermno , buf , count ) ; port = find_port_by_vtermno ( vtermno ) ; if ( ! port ) return - EPIPE ; <S2SV_StartBug> sg_init_one ( sg , buf , count ) ; <S2SV_EndBug> <S2SV_StartBug> return __send_to_port ( port , sg , 1 , count , ( void * ) buf , false ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ 1 ] ; void * data ; int ret <S2SV_ModStart> - EPIPE ; data = kmemdup ( buf , count , GFP_ATOMIC ) ; if ( ! data ) return - ENOMEM ; <S2SV_ModStart> ( sg , data <S2SV_ModEnd> , count ) <S2SV_ModStart> count ) ; ret = <S2SV_ModEnd> __send_to_port ( port <S2SV_ModStart> , count , data <S2SV_ModEnd> , false ) <S2SV_ModStart> false ) ; kfree ( data ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_rtcd ( ) { <S2SV_StartBug> vpx_scale_rtcd ( ) ; <S2SV_EndBug> once ( setup_rtcd_internal ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) { <S2SV_ModEnd> once ( setup_rtcd_internal\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2180\n\n```\nCWE-125 int TS_OBJ_print_bio ( BIO * bio , const ASN1_OBJECT * obj ) { char obj_txt [ 128 ] ; <S2SV_StartBug> int len = OBJ_obj2txt ( obj_txt , sizeof ( obj_txt ) , obj , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> BIO_write ( bio , obj_txt , len ) ; <S2SV_EndBug> BIO_write ( bio , \"\\\\n\" , 1 ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 128 ] ; <S2SV_ModEnd> OBJ_obj2txt ( obj_txt <S2SV_ModStart> 0 ) ; BIO_printf <S2SV_ModEnd> ( bio , <S2SV_ModStart> ( bio , \"%s\\\\n\" , obj_txt <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15148\n\n```\nCWE-787 int main ( int argc , char * argv [ ] ) { int32_t ret = GPMF_OK ; GPMF_stream metadata_stream , * ms = & metadata_stream ; double metadatalength ; uint32_t * payload = NULL ; if ( argc != 2 ) { printf ( \"usage:<S2SV_blank>%s<S2SV_blank><file_with_GPMF>\\\\n\" , argv [ 0 ] ) ; return - 1 ; } size_t mp4 = OpenMP4Source ( argv [ 1 ] , MOV_GPMF_TRAK_TYPE , MOV_GPMF_TRAK_SUBTYPE ) ; <S2SV_StartBug> metadatalength = GetDuration ( mp4 ) ; <S2SV_EndBug> if ( metadatalength > 0.0 ) { uint32_t index , payloads = GetNumberPayloads ( mp4 ) ; # if 1 if ( payloads == 1 ) { uint32_t payloadsize = GetPayloadSize ( mp4 , 0 ) ; payload = GetPayload ( mp4 , payload , 0 ) ; if ( payload == NULL ) goto cleanup ; ret = GPMF_Init ( ms , payload , payloadsize ) ; if ( ret != GPMF_OK ) goto cleanup ; ret = GPMF_Validate ( ms , GPMF_RECURSE_LEVELS ) ; if ( GPMF_OK != ret ) { printf ( \"Invalid<S2SV_blank>Structure\\\\n\" ) ; goto cleanup ; } GPMF_ResetState ( ms ) ; do { PrintGPMF ( ms ) ; } while ( GPMF_OK == GPMF_Next ( ms , GPMF_RECURSE_LEVELS ) ) ; GPMF_ResetState ( ms ) ; printf ( \"\\\\n\" ) ; } # endif for ( index = 0 ; index < payloads ; index ++ ) { uint32_t payloadsize = GetPayloadSize ( mp4 , index ) ; <S2SV_StartBug> float in = 0.0 , out = 0.0 ; <S2SV_EndBug> payload = GetPayload ( mp4 , payload , index ) ; if ( payload == NULL ) goto cleanup ; ret = GetPayloadTime ( mp4 , index , & in , & out ) ; if ( ret != GPMF_OK ) goto cleanup ; ret = GPMF_Init ( ms , payload , payloadsize ) ; if ( ret != GPMF_OK ) goto cleanup ; # if 1 if ( index == 0 ) { ret = GPMF_FindNext ( ms , GPMF_KEY_STREAM , GPMF_RECURSE_LEVELS ) ; while ( GPMF_OK == ret ) { ret = GPMF_SeekToSamples ( ms ) ; if ( GPMF_OK == ret ) { uint32_t key = GPMF_Key ( ms ) ; GPMF_SampleType type = GPMF_Type ( ms ) ; uint32_t elements = GPMF_ElementsInStruct ( ms ) ; uint32_t samples = GPMF_PayloadSampleCount ( ms ) ; if ( samples ) { printf ( \"<S2SV_blank><S2SV_blank>STRM<S2SV_blank>of<S2SV_blank>%c%c%c%c<S2SV_blank>\" , PRINTF_4CC ( key ) ) ; if ( type == GPMF_TYPE_COMPLEX ) { GPMF_stream find_stream ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TYPE , GPMF_CURRENT_LEVEL ) ) { char tmp [ 64 ] ; char * data = ( char * ) GPMF_RawData ( & find_stream ) ; int size = GPMF_RawDataSize ( & find_stream ) ; if ( size < sizeof ( tmp ) ) { memcpy ( tmp , data , size ) ; tmp [ size ] = 0 ; printf ( \"of<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>\" , tmp ) ; } } } else { printf ( \"of<S2SV_blank>type<S2SV_blank>%c<S2SV_blank>\" , type ) ; } printf ( \"with<S2SV_blank>%d<S2SV_blank>sample%s<S2SV_blank>\" , samples , samples > 1 ? \"s\" : \"\" ) ; if ( elements > 1 ) printf ( \"--<S2SV_blank>%d<S2SV_blank>elements<S2SV_blank>per<S2SV_blank>sample\" , elements ) ; printf ( \"\\\\n\" ) ; } ret = GPMF_FindNext ( ms , GPMF_KEY_STREAM , GPMF_RECURSE_LEVELS ) ; } else { if ( ret == GPMF_ERROR_BAD_STRUCTURE ) { ret = GPMF_Next ( ms , GPMF_CURRENT_LEVEL ) ; } } } GPMF_ResetState ( ms ) ; printf ( \"\\\\n\" ) ; } # endif # if 1 if ( index == 0 ) { if ( GPMF_OK == GPMF_FindNext ( ms , STR2FOURCC ( \"GPS5\" ) , GPMF_RECURSE_LEVELS ) || GPMF_OK == GPMF_FindNext ( ms , STR2FOURCC ( \"GPRI\" ) , GPMF_RECURSE_LEVELS ) ) { uint32_t key = GPMF_Key ( ms ) ; uint32_t samples = GPMF_Repeat ( ms ) ; uint32_t elements = GPMF_ElementsInStruct ( ms ) ; uint32_t buffersize = samples * elements * sizeof ( double ) ; GPMF_stream find_stream ; double * ptr , * tmpbuffer = malloc ( buffersize ) ; char units [ 10 ] [ 6 ] = { \"\" } ; uint32_t unit_samples = 1 ; printf ( \"MP4<S2SV_blank>Payload<S2SV_blank>time<S2SV_blank>%.3f<S2SV_blank>to<S2SV_blank>%.3f<S2SV_blank>seconds\\\\n\" , in , out ) ; if ( tmpbuffer && samples ) { uint32_t i , j ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_SI_UNITS , GPMF_CURRENT_LEVEL ) || GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_UNITS , GPMF_CURRENT_LEVEL ) ) { char * data = ( char * ) GPMF_RawData ( & find_stream ) ; int ssize = GPMF_StructSize ( & find_stream ) ; unit_samples = GPMF_Repeat ( & find_stream ) ; for ( i = 0 ; i < unit_samples ; i ++ ) { memcpy ( units [ i ] , data , ssize ) ; units [ i ] [ ssize ] = 0 ; data += ssize ; } } GPMF_ScaledData ( ms , tmpbuffer , buffersize , 0 , samples , GPMF_TYPE_DOUBLE ) ; ptr = tmpbuffer ; for ( i = 0 ; i < samples ; i ++ ) { printf ( \"%c%c%c%c<S2SV_blank>\" , PRINTF_4CC ( key ) ) ; for ( j = 0 ; j < elements ; j ++ ) printf ( \"%.3f%s,<S2SV_blank>\" , * ptr ++ , units [ j % unit_samples ] ) ; printf ( \"\\\\n\" ) ; } free ( tmpbuffer ) ; } } GPMF_ResetState ( ms ) ; printf ( \"\\\\n\" ) ; } # endif } # if 1 while ( GPMF_OK == GPMF_FindNext ( ms , GPMF_KEY_STREAM , GPMF_RECURSE_LEVELS ) ) { if ( GPMF_OK == GPMF_SeekToSamples ( ms ) ) { <S2SV_StartBug> uint32_t fourcc = GPMF_Key ( ms ) ; <S2SV_EndBug> <S2SV_StartBug> double rate = GetGPMFSampleRate ( mp4 , fourcc , GPMF_SAMPLE_RATE_PRECISE ) ; <S2SV_EndBug> <S2SV_StartBug> printf ( \"%c%c%c%c<S2SV_blank>sampling<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%f<S2SV_blank>Hz\\\\n\" , PRINTF_4CC ( fourcc ) , rate ) ; <S2SV_EndBug> } } # endif cleanup : if ( payload ) FreePayload ( payload ) ; payload = NULL ; CloseSource ( mp4 ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MOV_GPMF_TRAK_SUBTYPE ) ; if ( mp4 == 0 ) { printf ( \"error:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>MP4/MOV\\\\n\" , argv [ 1 ] ) ; return - 1 ; } <S2SV_ModStart> index ) ; double <S2SV_ModEnd> in = 0.0 <S2SV_ModStart> ) ) { double in = 0.0 , out = 0.0 ; <S2SV_ModStart> fourcc , GPMF_SAMPLE_RATE_PRECISE , & in , & out ) ; printf ( \"%c%c%c%c<S2SV_blank>sampling<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%f<S2SV_blank>Hz<S2SV_blank>(from<S2SV_blank>%f<S2SV_blank>to<S2SV_blank>%f)\\\\n\" <S2SV_ModEnd> , PRINTF_4CC ( <S2SV_ModStart> ) , rate , in , out\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static void mpage_put_bnr_to_bhs ( struct mpage_da_data * mpd , sector_t logical , struct buffer_head * exbh ) { struct inode * inode = mpd -> inode ; struct address_space * mapping = inode -> i_mapping ; int blocks = exbh -> b_size >> inode -> i_blkbits ; sector_t pblock = exbh -> b_blocknr , cur_logical ; struct buffer_head * head , * bh ; pgoff_t index , end ; struct pagevec pvec ; int nr_pages , i ; index = logical >> ( PAGE_CACHE_SHIFT - inode -> i_blkbits ) ; end = ( logical + blocks - 1 ) >> ( PAGE_CACHE_SHIFT - inode -> i_blkbits ) ; cur_logical = index << ( PAGE_CACHE_SHIFT - inode -> i_blkbits ) ; pagevec_init ( & pvec , 0 ) ; while ( index <= end ) { nr_pages = pagevec_lookup ( & pvec , mapping , index , PAGEVEC_SIZE ) ; if ( nr_pages == 0 ) break ; for ( i = 0 ; i < nr_pages ; i ++ ) { struct page * page = pvec . pages [ i ] ; index = page -> index ; if ( index > end ) break ; index ++ ; BUG_ON ( ! PageLocked ( page ) ) ; BUG_ON ( PageWriteback ( page ) ) ; BUG_ON ( ! page_has_buffers ( page ) ) ; bh = page_buffers ( page ) ; head = bh ; do { if ( cur_logical >= logical ) break ; cur_logical ++ ; } while ( ( bh = bh -> b_this_page ) != head ) ; do { if ( cur_logical >= logical + blocks ) break ; if ( buffer_delay ( bh ) || buffer_unwritten ( bh ) ) { BUG_ON ( bh -> b_bdev != inode -> i_sb -> s_bdev ) ; if ( buffer_delay ( bh ) ) { clear_buffer_delay ( bh ) ; bh -> b_blocknr = pblock ; } else { clear_buffer_unwritten ( bh ) ; BUG_ON ( bh -> b_blocknr != pblock ) ; } } else if ( buffer_mapped ( bh ) ) BUG_ON ( bh -> b_blocknr != pblock ) ; <S2SV_StartBug> cur_logical ++ ; <S2SV_EndBug> pblock ++ ; } while ( ( bh = bh -> b_this_page ) != head ) ; } pagevec_release ( & pvec ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pblock ) ; if ( buffer_uninit ( exbh ) ) set_buffer_uninit ( bh ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0723\n\n```\nCWE-362 long tty_ioctl ( struct file * file , unsigned int cmd , unsigned long arg ) { struct tty_struct * tty = file_tty ( file ) ; struct tty_struct * real_tty ; void __user * p = ( void __user * ) arg ; int retval ; struct tty_ldisc * ld ; if ( tty_paranoia_check ( tty , file_inode ( file ) , \"tty_ioctl\" ) ) return - EINVAL ; real_tty = tty_pair_get_tty ( tty ) ; switch ( cmd ) { case TIOCSETD : case TIOCSBRK : case TIOCCBRK : case TCSBRK : case TCSBRKP : retval = tty_check_change ( tty ) ; if ( retval ) return retval ; if ( cmd != TIOCCBRK ) { tty_wait_until_sent ( tty , 0 ) ; if ( signal_pending ( current ) ) return - EINTR ; } break ; } switch ( cmd ) { case TIOCSTI : return tiocsti ( tty , p ) ; case TIOCGWINSZ : return tiocgwinsz ( real_tty , p ) ; case TIOCSWINSZ : return tiocswinsz ( real_tty , p ) ; case TIOCCONS : return real_tty != tty ? - EINVAL : tioccons ( file ) ; case FIONBIO : return fionbio ( file , p ) ; case TIOCEXCL : set_bit ( TTY_EXCLUSIVE , & tty -> flags ) ; return 0 ; case TIOCNXCL : clear_bit ( TTY_EXCLUSIVE , & tty -> flags ) ; return 0 ; case TIOCGEXCL : { int excl = test_bit ( TTY_EXCLUSIVE , & tty -> flags ) ; return put_user ( excl , ( int __user * ) p ) ; } case TIOCNOTTY : if ( current -> signal -> tty != tty ) return - ENOTTY ; no_tty ( ) ; return 0 ; case TIOCSCTTY : return tiocsctty ( real_tty , file , arg ) ; case TIOCGPGRP : return tiocgpgrp ( tty , real_tty , p ) ; case TIOCSPGRP : return tiocspgrp ( tty , real_tty , p ) ; case TIOCGSID : return tiocgsid ( tty , real_tty , p ) ; case TIOCGETD : <S2SV_StartBug> return put_user ( tty -> ldisc -> ops -> num , ( int __user * ) p ) ; <S2SV_EndBug> case TIOCSETD : return tiocsetd ( tty , p ) ; case TIOCVHANGUP : if ( ! capable ( CAP_SYS_ADMIN ) ) return - EPERM ; tty_vhangup ( tty ) ; return 0 ; case TIOCGDEV : { unsigned int ret = new_encode_dev ( tty_devnum ( real_tty ) ) ; return put_user ( ret , ( unsigned int __user * ) p ) ; } case TIOCSBRK : if ( tty -> ops -> break_ctl ) return tty -> ops -> break_ctl ( tty , - 1 ) ; return 0 ; case TIOCCBRK : if ( tty -> ops -> break_ctl ) return tty -> ops -> break_ctl ( tty , 0 ) ; return 0 ; case TCSBRK : if ( ! arg ) return send_break ( tty , 250 ) ; return 0 ; case TCSBRKP : return send_break ( tty , arg ? arg * 100 : 250 ) ; case TIOCMGET : return tty_tiocmget ( tty , p ) ; case TIOCMSET : case TIOCMBIC : case TIOCMBIS : return tty_tiocmset ( tty , cmd , p ) ; case TIOCGICOUNT : retval = tty_tiocgicount ( tty , p ) ; if ( retval != - EINVAL ) return retval ; break ; case TCFLSH : switch ( arg ) { case TCIFLUSH : case TCIOFLUSH : tty_buffer_flush ( tty , NULL ) ; break ; } break ; case TIOCSSERIAL : tty_warn_deprecated_flags ( p ) ; break ; } if ( tty -> ops -> ioctl ) { retval = tty -> ops -> ioctl ( tty , cmd , arg ) ; if ( retval != - ENOIOCTLCMD ) return retval ; } ld = tty_ldisc_ref_wait ( tty ) ; retval = - EINVAL ; if ( ld -> ops -> ioctl ) { retval = ld -> ops -> ioctl ( tty , file , cmd , arg ) ; if ( retval == - ENOIOCTLCMD ) retval = - ENOTTY ; } tty_ldisc_deref ( ld ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TIOCGETD : return tiocgetd ( tty , <S2SV_ModEnd> p ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11664\n\n```\nCWE-125 struct _mdi * _WM_ParseNewMidi ( uint8_t * midi_data , uint32_t midi_size ) { struct _mdi * mdi ; uint32_t tmp_val ; uint32_t midi_type ; <S2SV_StartBug> uint32_t track_size ; <S2SV_EndBug> uint8_t * * tracks ; uint32_t end_of_tracks = 0 ; uint32_t no_tracks ; uint32_t i ; uint32_t divisions = 96 ; uint32_t tempo = 500000 ; float samples_per_delta_f = 0.0 ; uint32_t sample_count = 0 ; float sample_count_f = 0.0 ; float sample_remainder = 0.0 ; uint8_t * sysex_store = NULL ; uint32_t * track_delta ; uint8_t * track_end ; uint32_t smallest_delta = 0 ; uint32_t subtract_delta = 0 ; uint8_t * running_event ; uint32_t setup_ret = 0 ; if ( midi_size < 14 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(too<S2SV_blank>short)\" , 0 ) ; return ( NULL ) ; } if ( ! memcmp ( midi_data , \"RIFF\" , 4 ) ) { if ( midi_size < 34 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(too<S2SV_blank>short)\" , 0 ) ; return ( NULL ) ; } midi_data += 20 ; midi_size -= 20 ; } if ( memcmp ( midi_data , \"MThd\" , 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_MIDI , NULL , 0 ) ; return ( NULL ) ; } midi_data += 4 ; midi_size -= 4 ; tmp_val = * midi_data ++ << 24 ; tmp_val |= * midi_data ++ << 16 ; tmp_val |= * midi_data ++ << 8 ; tmp_val |= * midi_data ++ ; midi_size -= 4 ; if ( tmp_val != 6 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , NULL , 0 ) ; return ( NULL ) ; } tmp_val = * midi_data ++ << 8 ; tmp_val |= * midi_data ++ ; midi_size -= 2 ; if ( tmp_val > 2 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_INVALID , NULL , 0 ) ; return ( NULL ) ; } midi_type = tmp_val ; tmp_val = * midi_data ++ << 8 ; tmp_val |= * midi_data ++ ; midi_size -= 2 ; if ( tmp_val < 1 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(no<S2SV_blank>tracks)\" , 0 ) ; return ( NULL ) ; } no_tracks = tmp_val ; if ( ( midi_type == 0 ) && ( no_tracks > 1 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_INVALID , \"(expected<S2SV_blank>1<S2SV_blank>track<S2SV_blank>for<S2SV_blank>type<S2SV_blank>0<S2SV_blank>midi<S2SV_blank>file,<S2SV_blank>found<S2SV_blank>more)\" , 0 ) ; return ( NULL ) ; } divisions = * midi_data ++ << 8 ; divisions |= * midi_data ++ ; midi_size -= 2 ; if ( divisions & 0x00008000 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_INVALID , NULL , 0 ) ; return ( NULL ) ; } samples_per_delta_f = _WM_GetSamplesPerTick ( divisions , tempo ) ; mdi = _WM_initMDI ( ) ; _WM_midi_setup_divisions ( mdi , divisions ) ; tracks = malloc ( sizeof ( uint8_t * ) * no_tracks ) ; <S2SV_StartBug> track_delta = malloc ( sizeof ( uint32_t ) * no_tracks ) ; <S2SV_EndBug> track_end = malloc ( sizeof ( uint8_t ) * no_tracks ) ; running_event = malloc ( sizeof ( uint8_t ) * no_tracks ) ; smallest_delta = 0xffffffff ; for ( i = 0 ; i < no_tracks ; i ++ ) { if ( midi_size < 8 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(too<S2SV_blank>short)\" , 0 ) ; goto _end ; } if ( memcmp ( midi_data , \"MTrk\" , 4 ) != 0 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(missing<S2SV_blank>track<S2SV_blank>header)\" , 0 ) ; goto _end ; } midi_data += 4 ; midi_size -= 4 ; <S2SV_StartBug> track_size = * midi_data ++ << 24 ; <S2SV_EndBug> <S2SV_StartBug> track_size |= * midi_data ++ << 16 ; <S2SV_EndBug> <S2SV_StartBug> track_size |= * midi_data ++ << 8 ; <S2SV_EndBug> <S2SV_StartBug> track_size |= * midi_data ++ ; <S2SV_EndBug> midi_size -= 4 ; <S2SV_StartBug> if ( midi_size < track_size ) { <S2SV_EndBug> _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(too<S2SV_blank>short)\" , 0 ) ; goto _end ; } <S2SV_StartBug> if ( track_size < 3 ) { <S2SV_EndBug> _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(bad<S2SV_blank>track<S2SV_blank>size)\" , 0 ) ; goto _end ; } <S2SV_StartBug> if ( ( midi_data [ track_size - 3 ] != 0xFF ) <S2SV_EndBug> <S2SV_StartBug> || ( midi_data [ track_size - 2 ] != 0x2F ) <S2SV_EndBug> <S2SV_StartBug> || ( midi_data [ track_size - 1 ] != 0x00 ) ) { <S2SV_EndBug> _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(missing<S2SV_blank>EOT)\" , 0 ) ; goto _end ; } tracks [ i ] = midi_data ; <S2SV_StartBug> midi_data += track_size ; <S2SV_EndBug> <S2SV_StartBug> midi_size -= track_size ; <S2SV_EndBug> track_end [ i ] = 0 ; running_event [ i ] = 0 ; track_delta [ i ] = 0 ; while ( * tracks [ i ] > 0x7F ) { track_delta [ i ] = ( track_delta [ i ] << 7 ) + ( * tracks [ i ] & 0x7F ) ; tracks [ i ] ++ ; <S2SV_StartBug> } <S2SV_EndBug> track_delta [ i ] = ( track_delta [ i ] << 7 ) + ( * tracks [ i ] & 0x7F ) ; <S2SV_StartBug> tracks [ i ] ++ ; <S2SV_EndBug> if ( midi_type == 1 ) { if ( track_delta [ i ] < smallest_delta ) { smallest_delta = track_delta [ i ] ; } } else { if ( i == 0 ) smallest_delta = track_delta [ i ] ; } } subtract_delta = smallest_delta ; sample_count_f = ( ( ( float ) smallest_delta * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; mdi -> events [ mdi -> event_count - 1 ] . samples_to_next += sample_count ; mdi -> extra_info . approx_total_samples += sample_count ; if ( midi_type == 1 ) { while ( end_of_tracks != no_tracks ) { smallest_delta = 0 ; for ( i = 0 ; i < no_tracks ; i ++ ) { if ( track_end [ i ] ) continue ; if ( track_delta [ i ] ) { track_delta [ i ] -= subtract_delta ; if ( track_delta [ i ] ) { if ( ( ! smallest_delta ) || ( smallest_delta > track_delta [ i ] ) ) { smallest_delta = track_delta [ i ] ; } continue ; } } do { <S2SV_StartBug> setup_ret = _WM_SetupMidiEvent ( mdi , tracks [ i ] , running_event [ i ] ) ; <S2SV_EndBug> if ( setup_ret == 0 ) { goto _end ; } if ( tracks [ i ] [ 0 ] > 0x7f ) { if ( tracks [ i ] [ 0 ] < 0xf0 ) { running_event [ i ] = tracks [ i ] [ 0 ] ; } else if ( ( tracks [ i ] [ 0 ] == 0xf0 ) || ( tracks [ i ] [ 0 ] == 0xf7 ) ) { running_event [ i ] = 0 ; } else if ( ( tracks [ i ] [ 0 ] == 0xff ) && ( tracks [ i ] [ 1 ] == 0x2f ) && ( tracks [ i ] [ 2 ] == 0x00 ) ) { end_of_tracks ++ ; track_end [ i ] = 1 ; tracks [ i ] += 3 ; <S2SV_StartBug> goto NEXT_TRACK ; <S2SV_EndBug> } else if ( ( tracks [ i ] [ 0 ] == 0xff ) && ( tracks [ i ] [ 1 ] == 0x51 ) && ( tracks [ i ] [ 2 ] == 0x03 ) ) { tempo = ( tracks [ i ] [ 3 ] << 16 ) + ( tracks [ i ] [ 4 ] << 8 ) + tracks [ i ] [ 5 ] ; if ( ! tempo ) tempo = 500000 ; samples_per_delta_f = _WM_GetSamplesPerTick ( divisions , tempo ) ; } } tracks [ i ] += setup_ret ; <S2SV_StartBug> if ( * tracks [ i ] > 0x7f ) { <S2SV_EndBug> do { <S2SV_StartBug> track_delta [ i ] = ( track_delta [ i ] << 7 ) + ( * tracks [ i ] & 0x7F ) ; <S2SV_EndBug> tracks [ i ] ++ ; <S2SV_StartBug> } while ( * tracks [ i ] > 0x7f ) ; <S2SV_EndBug> } <S2SV_StartBug> track_delta [ i ] = ( track_delta [ i ] << 7 ) + ( * tracks [ i ] & 0x7F ) ; <S2SV_EndBug> <S2SV_StartBug> tracks [ i ] ++ ; <S2SV_EndBug> } while ( ! track_delta [ i ] ) ; if ( ( ! smallest_delta ) || ( smallest_delta > track_delta [ i ] ) ) { smallest_delta = track_delta [ i ] ; } NEXT_TRACK : continue ; } subtract_delta = smallest_delta ; sample_count_f = ( ( ( float ) smallest_delta * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; mdi -> events [ mdi -> event_count - 1 ] . samples_to_next += sample_count ; mdi -> extra_info . approx_total_samples += sample_count ; } } else { if ( midi_type == 2 ) { mdi -> is_type2 = 1 ; } sample_remainder = 0.0 ; for ( i = 0 ; i < no_tracks ; i ++ ) { running_event [ i ] = 0 ; do { <S2SV_StartBug> setup_ret = _WM_SetupMidiEvent ( mdi , tracks [ i ] , running_event [ i ] ) ; <S2SV_EndBug> if ( setup_ret == 0 ) { goto _end ; } if ( tracks [ i ] [ 0 ] > 0x7f ) { if ( tracks [ i ] [ 0 ] < 0xf0 ) { running_event [ i ] = tracks [ i ] [ 0 ] ; } else if ( ( tracks [ i ] [ 0 ] == 0xf0 ) || ( tracks [ i ] [ 0 ] == 0xf7 ) ) { running_event [ i ] = 0 ; } else if ( ( tracks [ i ] [ 0 ] == 0xff ) && ( tracks [ i ] [ 1 ] == 0x2f ) && ( tracks [ i ] [ 2 ] == 0x00 ) ) { track_end [ i ] = 1 ; goto NEXT_TRACK2 ; } else if ( ( tracks [ i ] [ 0 ] == 0xff ) && ( tracks [ i ] [ 1 ] == 0x51 ) && ( tracks [ i ] [ 2 ] == 0x03 ) ) { tempo = ( tracks [ i ] [ 3 ] << 16 ) + ( tracks [ i ] [ 4 ] << 8 ) + tracks [ i ] [ 5 ] ; if ( ! tempo ) tempo = 500000 ; samples_per_delta_f = _WM_GetSamplesPerTick ( divisions , tempo ) ; } } tracks [ i ] += setup_ret ; <S2SV_StartBug> track_delta [ i ] = 0 ; <S2SV_EndBug> if ( * tracks [ i ] > 0x7f ) { do { <S2SV_StartBug> track_delta [ i ] = ( track_delta [ i ] << 7 ) + ( * tracks [ i ] & 0x7F ) ; <S2SV_EndBug> tracks [ i ] ++ ; <S2SV_StartBug> } while ( * tracks [ i ] > 0x7f ) ; <S2SV_EndBug> } <S2SV_StartBug> track_delta [ i ] = ( track_delta [ i ] << 7 ) + ( * tracks [ i ] & 0x7F ) ; <S2SV_EndBug> <S2SV_StartBug> tracks [ i ] ++ ; <S2SV_EndBug> sample_count_f = ( ( ( float ) track_delta [ i ] * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; mdi -> events [ mdi -> event_count - 1 ] . samples_to_next += sample_count ; mdi -> extra_info . approx_total_samples += sample_count ; NEXT_TRACK2 : smallest_delta = track_delta [ i ] ; UNUSED ( smallest_delta ) ; } while ( track_end [ i ] == 0 ) ; } } if ( ( mdi -> reverb = _WM_init_reverb ( _WM_SampleRate , _WM_reverb_room_width , _WM_reverb_room_length , _WM_reverb_listen_posx , _WM_reverb_listen_posy ) ) == NULL ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_MEM , \"to<S2SV_blank>init<S2SV_blank>reverb\" , 0 ) ; goto _end ; } mdi -> extra_info . current_sample = 0 ; mdi -> current_event = & mdi -> events [ 0 ] ; mdi -> samples_to_mix = 0 ; mdi -> note = NULL ; _WM_ResetToStart ( mdi ) ; _end : free ( sysex_store ) ; free ( track_end ) ; free ( track_delta ) ; free ( running_event ) ; free ( tracks ) ; <S2SV_StartBug> if ( mdi -> reverb ) return ( mdi ) ; <S2SV_EndBug> _WM_freeMDI ( mdi ) ; return ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t midi_type ; uint8_t * * tracks ; uint32_t * track_size <S2SV_ModEnd> ; uint32_t end_of_tracks <S2SV_ModStart> no_tracks ) ; track_size = malloc ( sizeof ( uint32_t ) * no_tracks ) ; <S2SV_ModStart> -= 4 ; tmp_val <S2SV_ModEnd> = * midi_data <S2SV_ModStart> << 24 ; tmp_val <S2SV_ModEnd> |= * midi_data <S2SV_ModStart> << 16 ; tmp_val <S2SV_ModEnd> |= * midi_data <S2SV_ModStart> << 8 ; tmp_val <S2SV_ModEnd> |= * midi_data <S2SV_ModStart> ( midi_size < tmp_val <S2SV_ModEnd> ) { _WM_GLOBAL_ERROR <S2SV_ModStart> } if ( tmp_val <S2SV_ModEnd> < 3 ) <S2SV_ModStart> ( midi_data [ tmp_val <S2SV_ModEnd> - 3 ] <S2SV_ModStart> ( midi_data [ tmp_val <S2SV_ModEnd> - 2 ] <S2SV_ModStart> ( midi_data [ tmp_val <S2SV_ModEnd> - 1 ] <S2SV_ModStart> = midi_data ; track_size [ i ] = tmp_val ; midi_data += tmp_val <S2SV_ModEnd> ; midi_size -= <S2SV_ModStart> ; midi_size -= tmp_val <S2SV_ModEnd> ; track_end [ <S2SV_ModStart> ] ++ ; track_size [ i ] -- ; <S2SV_ModStart> i ] ++ ; track_size [ i ] -- <S2SV_ModStart> i ] , track_size [ i ] , <S2SV_ModStart> += 3 ; track_size [ i ] -= 3 ; <S2SV_ModStart> += setup_ret ; track_size [ i ] -= setup_ret ; <S2SV_ModStart> { do { if ( ! track_size [ i ] ) break ; <S2SV_ModStart> ] ++ ; track_size [ i ] -- ; <S2SV_ModStart> ) ; } if ( ! track_size [ i ] ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(too<S2SV_blank>short)\" , 0 ) ; goto _end ; } <S2SV_ModStart> i ] ++ ; track_size [ i ] -- <S2SV_ModStart> i ] , track_size [ i ] , <S2SV_ModStart> += setup_ret ; track_size [ i ] -= setup_ret ; <S2SV_ModStart> { do { if ( ! track_size [ i ] ) break ; <S2SV_ModStart> ] ++ ; track_size [ i ] -- ; <S2SV_ModStart> ) ; } if ( ! track_size [ i ] ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(too<S2SV_blank>short)\" , 0 ) ; goto _end ; } <S2SV_ModStart> i ] ++ ; track_size [ i ] -- <S2SV_ModStart> tracks ) ; free ( track_size ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9004\n\n```\nCWE-264 SYSCALL_DEFINE5 ( perf_event_open , struct perf_event_attr __user * , attr_uptr , pid_t , pid , int , cpu , int , group_fd , unsigned long , flags ) { struct perf_event * group_leader = NULL , * output_event = NULL ; struct perf_event * event , * sibling ; struct perf_event_attr attr ; struct perf_event_context * ctx ; struct file * event_file = NULL ; struct fd group = { NULL , 0 } ; struct task_struct * task = NULL ; struct pmu * pmu ; int event_fd ; int move_group = 0 ; int err ; int f_flags = O_RDWR ; if ( flags & ~ PERF_FLAG_ALL ) return - EINVAL ; err = perf_copy_attr ( attr_uptr , & attr ) ; if ( err ) return err ; if ( ! attr . exclude_kernel ) { if ( perf_paranoid_kernel ( ) && ! capable ( CAP_SYS_ADMIN ) ) return - EACCES ; } if ( attr . freq ) { if ( attr . sample_freq > sysctl_perf_event_sample_rate ) return - EINVAL ; } else { if ( attr . sample_period & ( 1ULL << 63 ) ) return - EINVAL ; } if ( ( flags & PERF_FLAG_PID_CGROUP ) && ( pid == - 1 || cpu == - 1 ) ) return - EINVAL ; if ( flags & PERF_FLAG_FD_CLOEXEC ) f_flags |= O_CLOEXEC ; event_fd = get_unused_fd_flags ( f_flags ) ; if ( event_fd < 0 ) return event_fd ; if ( group_fd != - 1 ) { err = perf_fget_light ( group_fd , & group ) ; if ( err ) goto err_fd ; group_leader = group . file -> private_data ; if ( flags & PERF_FLAG_FD_OUTPUT ) output_event = group_leader ; if ( flags & PERF_FLAG_FD_NO_GROUP ) group_leader = NULL ; } if ( pid != - 1 && ! ( flags & PERF_FLAG_PID_CGROUP ) ) { task = find_lively_task_by_vpid ( pid ) ; if ( IS_ERR ( task ) ) { err = PTR_ERR ( task ) ; goto err_group_fd ; } } if ( task && group_leader && group_leader -> attr . inherit != attr . inherit ) { err = - EINVAL ; goto err_task ; } get_online_cpus ( ) ; event = perf_event_alloc ( & attr , cpu , task , group_leader , NULL , NULL , NULL ) ; if ( IS_ERR ( event ) ) { err = PTR_ERR ( event ) ; goto err_cpus ; } if ( flags & PERF_FLAG_PID_CGROUP ) { err = perf_cgroup_connect ( pid , event , & attr , group_leader ) ; if ( err ) { __free_event ( event ) ; goto err_cpus ; } } if ( is_sampling_event ( event ) ) { if ( event -> pmu -> capabilities & PERF_PMU_CAP_NO_INTERRUPT ) { err = - ENOTSUPP ; goto err_alloc ; } } account_event ( event ) ; pmu = event -> pmu ; if ( group_leader && ( is_software_event ( event ) != is_software_event ( group_leader ) ) ) { if ( is_software_event ( event ) ) { pmu = group_leader -> pmu ; } else if ( is_software_event ( group_leader ) && ( group_leader -> group_flags & PERF_GROUP_SOFTWARE ) ) { move_group = 1 ; } } ctx = find_get_context ( pmu , task , event -> cpu ) ; if ( IS_ERR ( ctx ) ) { err = PTR_ERR ( ctx ) ; goto err_alloc ; } if ( task ) { put_task_struct ( task ) ; task = NULL ; } if ( group_leader ) { err = - EINVAL ; if ( group_leader -> group_leader != group_leader ) goto err_context ; if ( move_group ) { <S2SV_StartBug> if ( group_leader -> ctx -> type != ctx -> type ) <S2SV_EndBug> goto err_context ; } else { if ( group_leader -> ctx != ctx ) goto err_context ; } if ( attr . exclusive || attr . pinned ) goto err_context ; } if ( output_event ) { err = perf_event_set_output ( event , output_event ) ; if ( err ) goto err_context ; } event_file = anon_inode_getfile ( \"[perf_event]\" , & perf_fops , event , f_flags ) ; if ( IS_ERR ( event_file ) ) { err = PTR_ERR ( event_file ) ; goto err_context ; } if ( move_group ) { struct perf_event_context * gctx = group_leader -> ctx ; mutex_lock ( & gctx -> mutex ) ; perf_remove_from_context ( group_leader , false ) ; perf_event__state_init ( group_leader ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_remove_from_context ( sibling , false ) ; perf_event__state_init ( sibling ) ; put_ctx ( gctx ) ; } mutex_unlock ( & gctx -> mutex ) ; put_ctx ( gctx ) ; } WARN_ON_ONCE ( ctx -> parent_ctx ) ; mutex_lock ( & ctx -> mutex ) ; if ( move_group ) { synchronize_rcu ( ) ; perf_install_in_context ( ctx , group_leader , group_leader -> cpu ) ; get_ctx ( ctx ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_install_in_context ( ctx , sibling , sibling -> cpu ) ; get_ctx ( ctx ) ; } } perf_install_in_context ( ctx , event , event -> cpu ) ; perf_unpin_context ( ctx ) ; mutex_unlock ( & ctx -> mutex ) ; put_online_cpus ( ) ; event -> owner = current ; mutex_lock ( & current -> perf_event_mutex ) ; list_add_tail ( & event -> owner_entry , & current -> perf_event_list ) ; mutex_unlock ( & current -> perf_event_mutex ) ; perf_event__header_size ( event ) ; perf_event__id_header_size ( event ) ; fdput ( group ) ; fd_install ( event_fd , event_file ) ; return event_fd ; err_context : perf_unpin_context ( ctx ) ; put_ctx ( ctx ) ; err_alloc : free_event ( event ) ; err_cpus : put_online_cpus ( ) ; err_task : if ( task ) put_task_struct ( task ) ; err_group_fd : fdput ( group ) ; err_fd : put_unused_fd ( event_fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ctx -> task <S2SV_ModEnd> != ctx -> <S2SV_ModStart> != ctx -> task ) goto err_context ; if ( group_leader -> cpu != event -> cpu <S2SV_ModEnd> ) goto err_context\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 char * _multi_string_alloc_and_copy ( LPCWSTR in ) { char * chr ; int len = 0 ; if ( ! in ) { <S2SV_StartBug> return in ; <S2SV_EndBug> } while ( in [ len ] != 0 || in [ len + 1 ] != 0 ) { len ++ ; } chr = malloc ( len + 2 ) ; len = 0 ; while ( in [ len ] != 0 || in [ len + 1 ] != 0 ) { chr [ len ] = 0xFF & in [ len ] ; len ++ ; } chr [ len ++ ] = '\\\\0' ; chr [ len ++ ] = '\\\\0' ; return chr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return NULL <S2SV_ModEnd> ; } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-682(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0819\n\n```\nCWE-682 WORD32 ihevcd_decode ( iv_obj_t * ps_codec_obj , void * pv_api_ip , void * pv_api_op ) { WORD32 ret = IV_SUCCESS ; codec_t * ps_codec = ( codec_t * ) ( ps_codec_obj -> pv_codec_handle ) ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; WORD32 proc_idx = 0 ; WORD32 prev_proc_idx = 0 ; ps_codec -> i4_error_code = 0 ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } if ( ps_codec -> i4_init_done != 1 ) { ps_dec_op -> u4_error_code |= 1 << IVD_FATALERROR ; ps_dec_op -> u4_error_code |= IHEVCD_INIT_NOT_DONE ; return IV_FAIL ; } if ( ps_codec -> u4_pic_cnt >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code |= 1 << IVD_FATALERROR ; ps_dec_op -> u4_error_code |= IHEVCD_NUM_FRAMES_LIMIT_REACHED ; return IV_FAIL ; } if ( ps_codec -> i4_reset_flag ) { ps_codec -> i4_flush_mode = 1 ; } if ( 0 == ps_codec -> i4_flush_mode ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= MIN_START_CODE_LEN ) { if ( ( WORD32 ) ps_dec_ip -> u4_num_Bytes > 0 ) ps_dec_op -> u4_num_bytes_consumed = ps_dec_ip -> u4_num_Bytes ; else ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } # ifdef APPLY_CONCEALMENT { WORD32 num_mbs ; num_mbs = ( ps_codec -> i4_wd * ps_codec -> i4_ht + 255 ) >> 8 ; ps_codec -> mb_count = 0 ; memset ( ps_codec -> mb_map , 0 , ( ( num_mbs + 7 ) >> 3 ) ) ; } # endif if ( 0 == ps_codec -> i4_share_disp_buf && ps_codec -> i4_header_mode == 0 ) { UWORD32 i ; if ( ps_dec_ip -> s_out_buffer . u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec_ip -> s_out_buffer . u4_num_bufs ; i ++ ) { if ( ps_dec_ip -> s_out_buffer . pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> s_out_buffer . u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } ps_codec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_codec -> u4_ts = ps_dec_ip -> u4_ts ; if ( ps_codec -> i4_flush_mode ) { ps_dec_op -> u4_pic_wd = ps_codec -> i4_disp_wd ; ps_dec_op -> u4_pic_ht = ps_codec -> i4_disp_ht ; ps_dec_op -> u4_new_seq = 0 ; ps_codec -> ps_disp_buf = ( pic_buf_t * ) ihevc_disp_mgr_get ( ( disp_mgr_t * ) ps_codec -> pv_disp_buf_mgr , & ps_codec -> i4_disp_buf_id ) ; if ( ( ps_codec -> ps_disp_buf ) && ( ( 0 == ps_codec -> i4_share_disp_buf ) || ( IV_YUV_420P == ps_codec -> e_chroma_fmt ) ) ) { process_ctxt_t * ps_proc = & ps_codec -> as_process [ prev_proc_idx ] ; if ( 0 == ps_proc -> i4_init_done ) { ihevcd_init_proc_ctxt ( ps_proc , 0 ) ; } ret = ihevcd_check_out_buf_size ( ps_codec ) ; RETURN_IF ( ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) , ret ) ; ret = ihevcd_fmt_conv ( ps_codec , & ps_codec -> as_process [ prev_proc_idx ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , 0 , ps_codec -> i4_disp_ht ) ; ihevc_buf_mgr_release ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_codec -> i4_disp_buf_id , BUF_MGR_DISP ) ; } ihevcd_fill_outargs ( ps_codec , ps_dec_ip , ps_dec_op ) ; if ( 1 == ps_dec_op -> u4_output_present ) { WORD32 xpos = ps_codec -> i4_disp_wd - 32 - LOGO_WD ; WORD32 ypos = ps_codec -> i4_disp_ht - 32 - LOGO_HT ; if ( ypos < 0 ) ypos = 0 ; if ( xpos < 0 ) xpos = 0 ; INSERT_LOGO ( ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , ps_codec -> i4_disp_strd , xpos , ypos , ps_codec -> e_chroma_fmt , ps_codec -> i4_disp_wd , ps_codec -> i4_disp_ht ) ; } if ( NULL == ps_codec -> ps_disp_buf ) { if ( ps_codec -> i4_reset_flag ) { ihevcd_init ( ps_codec ) ; } return ( IV_FAIL ) ; } return ( IV_SUCCESS ) ; } if ( ( 0 == ps_codec -> i4_header_mode ) && ( 1 == ps_codec -> i4_share_disp_buf ) ) { WORD32 buf_status ; buf_status = 1 ; if ( ps_codec -> pv_pic_buf_mgr ) buf_status = ihevc_buf_mgr_check_free ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr ) ; if ( 0 == buf_status ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return IV_FAIL ; } } ps_codec -> i4_bytes_remaining = ps_dec_ip -> u4_num_Bytes ; ps_codec -> pu1_inp_bitsbuf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer ; ps_codec -> s_parse . i4_end_of_frame = 0 ; ps_codec -> i4_pic_present = 0 ; ps_codec -> i4_slice_error = 0 ; ps_codec -> ps_disp_buf = NULL ; if ( ps_codec -> i4_num_cores > 1 ) { ithread_set_affinity ( 0 ) ; } while ( MIN_START_CODE_LEN < ps_codec -> i4_bytes_remaining ) { WORD32 nal_len ; WORD32 nal_ofst ; WORD32 bits_len ; if ( ps_codec -> i4_slice_error ) { slice_header_t * ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ; WORD32 next_slice_addr = ps_slice_hdr_next -> i2_ctb_x + ps_slice_hdr_next -> i2_ctb_y * ps_codec -> s_parse . ps_sps -> i2_pic_wd_in_ctb ; if ( ps_codec -> s_parse . i4_next_ctb_indx == next_slice_addr ) ps_codec -> i4_slice_error = 0 ; } if ( ps_codec -> pu1_bitsbuf_dynamic ) { ps_codec -> pu1_bitsbuf = ps_codec -> pu1_bitsbuf_dynamic ; ps_codec -> u4_bitsbuf_size = ps_codec -> u4_bitsbuf_size_dynamic ; } else { ps_codec -> pu1_bitsbuf = ps_codec -> pu1_bitsbuf_static ; ps_codec -> u4_bitsbuf_size = ps_codec -> u4_bitsbuf_size_static ; } nal_ofst = ihevcd_nal_search_start_code ( ps_codec -> pu1_inp_bitsbuf , ps_codec -> i4_bytes_remaining ) ; ps_codec -> i4_nal_ofst = nal_ofst ; { WORD32 bytes_remaining = ps_codec -> i4_bytes_remaining - nal_ofst ; bytes_remaining = MIN ( ( UWORD32 ) bytes_remaining , ps_codec -> u4_bitsbuf_size ) ; ihevcd_nal_remv_emuln_bytes ( ps_codec -> pu1_inp_bitsbuf + nal_ofst , ps_codec -> pu1_bitsbuf , bytes_remaining , & nal_len , & bits_len ) ; if ( bits_len < ( WORD32 ) ( ps_codec -> u4_bitsbuf_size - 8 ) ) { memset ( ps_codec -> pu1_bitsbuf + bits_len , 0 , 2 * sizeof ( UWORD32 ) ) ; } } ps_codec -> i4_num_emln_bytes = nal_len - bits_len ; ps_codec -> i4_nal_len = nal_len ; ihevcd_bits_init ( & ps_codec -> s_parse . s_bitstrm , ps_codec -> pu1_bitsbuf , bits_len ) ; ret = ihevcd_nal_unit ( ps_codec ) ; if ( ps_codec -> i4_pic_present && ( ps_codec -> s_parse . i4_next_ctb_indx != ps_codec -> s_parse . ps_sps -> i4_pic_size_in_ctb ) ) { if ( ( ps_codec -> i4_bytes_remaining - ( nal_len + nal_ofst ) <= MIN_START_CODE_LEN ) || ( ps_codec -> i4_header_in_slice_mode ) ) { slice_header_t * ps_slice_hdr_next ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = 0 ; ps_slice_hdr_next -> i2_ctb_y = ps_codec -> s_parse . ps_sps -> i2_pic_ht_in_ctb ; ps_codec -> i4_slice_error = 1 ; continue ; } } if ( IHEVCD_IGNORE_SLICE == ret ) { <S2SV_StartBug> ps_codec -> s_parse . i4_cur_slice_idx = MAX ( 0 , ( ps_codec -> s_parse . i4_cur_slice_idx - 1 ) ) ; <S2SV_EndBug> ps_codec -> pu1_inp_bitsbuf += ( nal_ofst + nal_len ) ; ps_codec -> i4_bytes_remaining -= ( nal_ofst + nal_len ) ; continue ; } if ( ( IVD_RES_CHANGED == ret ) || ( IVD_STREAM_WIDTH_HEIGHT_NOT_SUPPORTED == ret ) ) { break ; } if ( ret != IHEVCD_SLICE_IN_HEADER_MODE ) { if ( ( 0 == ps_codec -> i4_slice_error ) || ( ps_codec -> i4_bytes_remaining - ( nal_len + nal_ofst ) <= MIN_START_CODE_LEN ) ) { ps_codec -> pu1_inp_bitsbuf += ( nal_ofst + nal_len ) ; ps_codec -> i4_bytes_remaining -= ( nal_ofst + nal_len ) ; } if ( ret != IHEVCD_SUCCESS ) break ; if ( ps_codec -> s_parse . i4_end_of_frame ) break ; } else { ret = IHEVCD_SUCCESS ; break ; } if ( ( ps_codec -> u4_allocate_dynamic_done == 0 ) && ps_codec -> i4_sps_done ) { WORD32 ret ; ret = ihevcd_allocate_dynamic_bufs ( ps_codec ) ; if ( ret != IV_SUCCESS ) { ihevcd_free_dynamic_bufs ( ps_codec ) ; ps_codec -> i4_error_code = IVD_MEM_ALLOC_FAILED ; ps_dec_op -> u4_error_code |= 1 << IVD_FATALERROR ; ps_dec_op -> u4_error_code |= IVD_MEM_ALLOC_FAILED ; return IV_FAIL ; } } BREAK_AFTER_SLICE_NAL ( ) ; } if ( ( ps_codec -> u4_pic_cnt == 0 ) && ( ret != IHEVCD_SUCCESS ) ) { ps_codec -> i4_error_code = ret ; ihevcd_fill_outargs ( ps_codec , ps_dec_ip , ps_dec_op ) ; return IV_FAIL ; } if ( 1 == ps_codec -> i4_pic_present ) { WORD32 i ; sps_t * ps_sps = ps_codec -> s_parse . ps_sps ; ps_codec -> i4_first_pic_done = 1 ; if ( ps_codec -> i4_num_cores > 1 && ps_codec -> s_parse . i4_end_of_frame ) { process_ctxt_t * ps_proc ; ps_proc = & ps_codec -> as_process [ ps_codec -> i4_num_cores - 1 ] ; if ( ( ps_codec -> ps_disp_buf ) && ( ( 0 == ps_codec -> i4_share_disp_buf ) || ( IV_YUV_420P == ps_codec -> e_chroma_fmt ) ) ) { if ( ( 0 == ps_codec -> u4_enable_fmt_conv_ahead ) || ( ps_codec -> i4_disp_buf_id == ps_proc -> i4_cur_pic_buf_id ) ) for ( i = 0 ; i < ps_sps -> i2_pic_ht_in_ctb ; i ++ ) { proc_job_t s_job ; IHEVCD_ERROR_T ret ; s_job . i4_cmd = CMD_FMTCONV ; s_job . i2_ctb_cnt = 0 ; s_job . i2_ctb_x = 0 ; s_job . i2_ctb_y = i ; s_job . i2_slice_idx = 0 ; s_job . i4_tu_coeff_data_ofst = 0 ; ret = ihevcd_jobq_queue ( ( jobq_t * ) ps_codec -> s_parse . pv_proc_jobq , & s_job , sizeof ( proc_job_t ) , 1 ) ; if ( ret != ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ) return ( WORD32 ) ret ; } } ret = ihevcd_jobq_terminate ( ( jobq_t * ) ps_codec -> s_parse . pv_proc_jobq ) ; while ( 1 ) { IHEVCD_ERROR_T ret ; proc_job_t s_job ; process_ctxt_t * ps_proc ; ps_proc = & ps_codec -> as_process [ ps_codec -> i4_num_cores - 1 ] ; ret = ihevcd_jobq_dequeue ( ( jobq_t * ) ps_proc -> pv_proc_jobq , & s_job , sizeof ( proc_job_t ) , 1 ) ; if ( ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS != ret ) break ; ps_proc -> i4_ctb_cnt = s_job . i2_ctb_cnt ; ps_proc -> i4_ctb_x = s_job . i2_ctb_x ; ps_proc -> i4_ctb_y = s_job . i2_ctb_y ; ps_proc -> i4_cur_slice_idx = s_job . i2_slice_idx ; if ( CMD_PROCESS == s_job . i4_cmd ) { ihevcd_init_proc_ctxt ( ps_proc , s_job . i4_tu_coeff_data_ofst ) ; ihevcd_process ( ps_proc ) ; } else if ( CMD_FMTCONV == s_job . i4_cmd ) { sps_t * ps_sps = ps_codec -> s_parse . ps_sps ; WORD32 num_rows = 1 << ps_sps -> i1_log2_ctb_size ; if ( 0 == ps_proc -> i4_init_done ) { ihevcd_init_proc_ctxt ( ps_proc , 0 ) ; } num_rows = MIN ( num_rows , ( ps_codec -> i4_disp_ht - ( s_job . i2_ctb_y << ps_sps -> i1_log2_ctb_size ) ) ) ; if ( num_rows < 0 ) num_rows = 0 ; ihevcd_fmt_conv ( ps_codec , ps_proc , ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , s_job . i2_ctb_y << ps_sps -> i1_log2_ctb_size , num_rows ) ; } } } else if ( ( ps_codec -> ps_disp_buf ) && ( ( 0 == ps_codec -> i4_share_disp_buf ) || ( IV_YUV_420P == ps_codec -> e_chroma_fmt ) ) && ( ps_codec -> s_parse . i4_end_of_frame ) ) { process_ctxt_t * ps_proc = & ps_codec -> as_process [ proc_idx ] ; ps_codec -> s_fmt_conv . i4_num_rows = ps_codec -> i4_disp_ht - ps_codec -> s_fmt_conv . i4_cur_row ; if ( 0 == ps_proc -> i4_init_done ) { ihevcd_init_proc_ctxt ( ps_proc , 0 ) ; } if ( ps_codec -> s_fmt_conv . i4_num_rows < 0 ) ps_codec -> s_fmt_conv . i4_num_rows = 0 ; ret = ihevcd_fmt_conv ( ps_codec , ps_proc , ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , ps_codec -> s_fmt_conv . i4_cur_row , ps_codec -> s_fmt_conv . i4_num_rows ) ; ps_codec -> s_fmt_conv . i4_cur_row += ps_codec -> s_fmt_conv . i4_num_rows ; } DEBUG_DUMP_MV_MAP ( ps_codec ) ; ihevc_buf_mgr_set_status ( ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr , ps_codec -> as_process [ proc_idx ] . i4_cur_mv_bank_buf_id , BUF_MGR_REF ) ; ihevc_buf_mgr_set_status ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_codec -> as_process [ proc_idx ] . i4_cur_pic_buf_id , BUF_MGR_REF ) ; ihevc_buf_mgr_set_status ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_codec -> as_process [ proc_idx ] . i4_cur_pic_buf_id , BUF_MGR_DISP ) ; ihevc_dpb_mgr_insert_ref ( ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr , ps_codec -> as_process [ proc_idx ] . ps_cur_pic , ps_codec -> as_process [ proc_idx ] . i4_cur_pic_buf_id ) ; if ( ( 0 == ps_codec -> i4_share_disp_buf ) && ( ps_codec -> ps_disp_buf ) ) ihevc_buf_mgr_release ( ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_codec -> i4_disp_buf_id , BUF_MGR_DISP ) ; for ( i = 0 ; i < ( ps_codec -> i4_num_cores - 1 ) ; i ++ ) { if ( ps_codec -> ai4_process_thread_created [ i ] ) { ithread_join ( ps_codec -> apv_process_thread_handle [ i ] , NULL ) ; ps_codec -> ai4_process_thread_created [ i ] = 0 ; } } DEBUG_VALIDATE_PADDED_REGION ( & ps_codec -> as_process [ proc_idx ] ) ; if ( ps_codec -> u4_pic_cnt > 0 ) { DEBUG_DUMP_PIC_PU ( ps_codec ) ; } DEBUG_DUMP_PIC_BUFFERS ( ps_codec ) ; ps_codec -> u4_pic_cnt ++ ; } ihevcd_fill_outargs ( ps_codec , ps_dec_ip , ps_dec_op ) ; if ( 1 == ps_dec_op -> u4_output_present ) { WORD32 xpos = ps_codec -> i4_disp_wd - 32 - LOGO_WD ; WORD32 ypos = ps_codec -> i4_disp_ht - 32 - LOGO_HT ; if ( ypos < 0 ) ypos = 0 ; if ( xpos < 0 ) xpos = 0 ; INSERT_LOGO ( ps_dec_ip -> s_out_buffer . pu1_bufs [ 0 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 1 ] , ps_dec_ip -> s_out_buffer . pu1_bufs [ 2 ] , ps_codec -> i4_disp_strd , xpos , ypos , ps_codec -> e_chroma_fmt , ps_codec -> i4_disp_wd , ps_codec -> i4_disp_ht ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ps_codec -> <S2SV_ModEnd> pu1_inp_bitsbuf += (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2636\n\n```\nCWE-399 void br_mdb_notify ( struct net_device * dev , struct net_bridge_port * port , struct br_ip * group , int type ) { <S2SV_StartBug> struct br_mdb_entry entry ; <S2SV_EndBug> entry . ifindex = port -> dev -> ifindex ; entry . addr . proto = group -> proto ; entry . addr . u . ip4 = group -> u . ip4 ; # if IS_ENABLED ( CONFIG_IPV6 ) entry . addr . u . ip6 = group -> u . ip6 ; # endif __br_mdb_notify ( dev , & entry , type ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct br_mdb_entry entry ; memset ( & entry , 0 , sizeof ( entry ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 int perf_event_task_disable ( void ) <S2SV_StartBug> { <S2SV_EndBug> struct perf_event * event ; mutex_lock ( & current -> perf_event_mutex ) ; <S2SV_StartBug> list_for_each_entry ( event , & current -> perf_event_list , owner_entry ) <S2SV_EndBug> <S2SV_StartBug> perf_event_for_each_child ( event , perf_event_disable ) ; <S2SV_EndBug> mutex_unlock ( & current -> perf_event_mutex ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { struct perf_event_context * ctx ; <S2SV_ModStart> , owner_entry ) { ctx = perf_event_ctx_lock ( event ) ; <S2SV_ModStart> ( event , _perf_event_disable ) ; perf_event_ctx_unlock ( event , ctx ) ; } <S2SV_ModEnd> mutex_unlock ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12106\n\n```\nCWE-416 static int updateDevice ( const struct header * headers , time_t t ) { struct device * * pp = & devlist ; struct device * p = * pp ; while ( p ) { if ( p -> headers [ HEADER_NT ] . l == headers [ HEADER_NT ] . l && ( 0 == memcmp ( p -> headers [ HEADER_NT ] . p , headers [ HEADER_NT ] . p , headers [ HEADER_NT ] . l ) ) && p -> headers [ HEADER_USN ] . l == headers [ HEADER_USN ] . l && ( 0 == memcmp ( p -> headers [ HEADER_USN ] . p , headers [ HEADER_USN ] . p , headers [ HEADER_USN ] . l ) ) ) { syslog ( LOG_DEBUG , \"device<S2SV_blank>updated<S2SV_blank>:<S2SV_blank>%.*s\" , headers [ HEADER_USN ] . l , headers [ HEADER_USN ] . p ) ; p -> t = t ; if ( headers [ HEADER_LOCATION ] . l > p -> headers [ HEADER_LOCATION ] . l ) { struct device * tmp ; tmp = realloc ( p , sizeof ( struct device ) + headers [ 0 ] . l + headers [ 1 ] . l + headers [ 2 ] . l ) ; if ( ! tmp ) { syslog ( LOG_ERR , \"updateDevice()<S2SV_blank>:<S2SV_blank>memory<S2SV_blank>allocation<S2SV_blank>error\" ) ; <S2SV_StartBug> free ( p ) ; <S2SV_EndBug> return 0 ; } p = tmp ; * pp = p ; } memcpy ( p -> data + p -> headers [ 0 ] . l + p -> headers [ 1 ] . l , headers [ 2 ] . p , headers [ 2 ] . l ) ; return 0 ; } pp = & p -> next ; p = * pp ; } syslog ( LOG_INFO , \"new<S2SV_blank>device<S2SV_blank>discovered<S2SV_blank>:<S2SV_blank>%.*s\" , headers [ HEADER_USN ] . l , headers [ HEADER_USN ] . p ) ; { char * pc ; int i ; p = malloc ( sizeof ( struct device ) + headers [ 0 ] . l + headers [ 1 ] . l + headers [ 2 ] . l ) ; if ( ! p ) { syslog ( LOG_ERR , \"updateDevice():<S2SV_blank>cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; return - 1 ; } p -> next = devlist ; p -> t = t ; pc = p -> data ; for ( i = 0 ; i < 3 ; i ++ ) { p -> headers [ i ] . p = pc ; p -> headers [ i ] . l = headers [ i ] . l ; memcpy ( pc , headers [ i ] . p , headers [ i ] . l ) ; pc += headers [ i ] . l ; } devlist = p ; sendNotifications ( NOTIF_NEW , p , NULL ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"updateDevice()<S2SV_blank>:<S2SV_blank>memory<S2SV_blank>allocation<S2SV_blank>error\" ) ; * pp = p -> next ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6418\n\n```\nCWE-399 static int ceph_x_proc_ticket_reply ( struct ceph_auth_client * ac , struct ceph_crypto_key * secret , void * buf , void * end ) { void * p = buf ; <S2SV_StartBug> char * dbuf ; <S2SV_EndBug> char * ticket_buf ; u8 reply_struct_v ; u32 num ; <S2SV_StartBug> int ret ; <S2SV_EndBug> dbuf = kmalloc ( TEMP_TICKET_BUF_LEN , GFP_NOFS ) ; if ( ! dbuf ) return - ENOMEM ; ret = - ENOMEM ; ticket_buf = kmalloc ( TEMP_TICKET_BUF_LEN , GFP_NOFS ) ; if ( ! ticket_buf ) goto out_dbuf ; ceph_decode_8_safe ( & p , end , reply_struct_v , bad ) ; if ( reply_struct_v != 1 ) return - EINVAL ; ceph_decode_32_safe ( & p , end , num , bad ) ; dout ( \"%d<S2SV_blank>tickets\\\\n\" , num ) ; while ( num -- ) { <S2SV_StartBug> ret = process_one_ticket ( ac , secret , & p , end , <S2SV_EndBug> dbuf , ticket_buf ) ; if ( ret ) <S2SV_StartBug> goto out ; <S2SV_EndBug> } ret = 0 ; out : kfree ( ticket_buf ) ; out_dbuf : kfree ( dbuf ) ; return ret ; bad : <S2SV_StartBug> ret = - EINVAL ; <S2SV_EndBug> <S2SV_StartBug> goto out ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = buf ; <S2SV_ModEnd> u8 reply_struct_v ; <S2SV_ModStart> ; int ret <S2SV_ModEnd> ; ceph_decode_8_safe ( <S2SV_ModStart> p , end <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( ret ) return ret ; } return 0 <S2SV_ModEnd> ; bad : <S2SV_ModStart> ; bad : return <S2SV_ModEnd> - EINVAL ; <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-27138\n\n```\nCWE-000 <S2SV_StartBug> int fit_config_verify_required_sigs ( const void * fit , int conf_noffset , <S2SV_EndBug> const void * sig_blob ) { <S2SV_StartBug> int noffset ; <S2SV_EndBug> int sig_node ; int verified = 0 ; int reqd_sigs = 0 ; bool reqd_policy_all = true ; <S2SV_StartBug> const char * reqd_mode ; <S2SV_EndBug> sig_node = fdt_subnode_offset ( sig_blob , 0 , FIT_SIG_NODENAME ) ; if ( sig_node < 0 ) { debug ( \"%s:<S2SV_blank>No<S2SV_blank>signature<S2SV_blank>node<S2SV_blank>found:<S2SV_blank>%s\\\\n\" , __func__ , fdt_strerror ( sig_node ) ) ; return 0 ; } reqd_mode = fdt_getprop ( sig_blob , sig_node , \"required-mode\" , NULL ) ; if ( reqd_mode && ! strcmp ( reqd_mode , \"any\" ) ) reqd_policy_all = false ; debug ( \"%s:<S2SV_blank>required-mode<S2SV_blank>policy<S2SV_blank>set<S2SV_blank>to<S2SV_blank>\\'%s\\'\\\\n\" , __func__ , reqd_policy_all ? \"all\" : \"any\" ) ; fdt_for_each_subnode ( noffset , sig_blob , sig_node ) { const char * required ; int ret ; required = fdt_getprop ( sig_blob , noffset , FIT_KEY_REQUIRED , NULL ) ; if ( ! required || strcmp ( required , \"conf\" ) ) continue ; reqd_sigs ++ ; ret = fit_config_verify_sig ( fit , conf_noffset , sig_blob , noffset ) ; if ( ret ) { if ( reqd_policy_all ) { printf ( \"Failed<S2SV_blank>to<S2SV_blank>verify<S2SV_blank>required<S2SV_blank>signature<S2SV_blank>\\'%s\\'\\\\n\" , fit_get_name ( sig_blob , noffset , NULL ) ) ; return ret ; } } else { verified ++ ; if ( ! reqd_policy_all ) break ; } } if ( reqd_sigs && ! verified ) { printf ( \"Failed<S2SV_blank>to<S2SV_blank>verify<S2SV_blank>\\'any\\'<S2SV_blank>of<S2SV_blank>the<S2SV_blank>required<S2SV_blank>signature(s)\\\\n\" ) ; return - EPERM ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> sig_blob ) { const char * name = fit_get_name ( fit , conf_noffset , NULL ) ; <S2SV_ModStart> * reqd_mode ; if ( strchr ( name , '@' ) ) { printf ( \"Configuration<S2SV_blank>node<S2SV_blank>\\'%s\\'<S2SV_blank>contains<S2SV_blank>\\'@\\'\\\\n\" , name ) ; return - EPERM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_rc_init_minq_luts ( ) { <S2SV_EndBug> int i ; for ( i = 0 ; i < QINDEX_RANGE ; i ++ ) { const double maxq = vp9_convert_qindex_to_q ( i ) ; kf_low_motion_minq [ i ] = get_minq_index ( maxq , 0.000001 , - 0.0004 , 0.15 ) ; kf_high_motion_minq [ i ] = get_minq_index ( maxq , 0.000002 , - 0.0012 , 0.50 ) ; gf_low_motion_minq [ i ] = get_minq_index ( maxq , 0.0000015 , - 0.0009 , 0.32 ) ; gf_high_motion_minq [ i ] = get_minq_index ( maxq , 0.0000021 , - 0.00125 , 0.50 ) ; afq_low_motion_minq [ i ] = get_minq_index ( maxq , 0.0000015 , - 0.0009 , 0.33 ) ; afq_high_motion_minq [ i ] = get_minq_index ( maxq , 0.0000021 , - 0.00125 , 0.55 ) ; inter_minq [ i ] = get_minq_index ( maxq , 0.00000271 , - 0.00113 , 0.75 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_rc_init_minq_luts ( void ) { init_minq_luts ( kf_low_motion_minq_8 , kf_high_motion_minq_8 , arfgf_low_motion_minq_8 , arfgf_high_motion_minq_8 , inter_minq_8 , rtc_minq_8 , VPX_BITS_8 ) ; # if CONFIG_VP9_HIGHBITDEPTH init_minq_luts ( kf_low_motion_minq_10 , kf_high_motion_minq_10 , arfgf_low_motion_minq_10 , arfgf_high_motion_minq_10 , inter_minq_10 , rtc_minq_10 , VPX_BITS_10 ) ; init_minq_luts ( kf_low_motion_minq_12 , kf_high_motion_minq_12 , arfgf_low_motion_minq_12 , arfgf_high_motion_minq_12 , inter_minq_12 , rtc_minq_12 , VPX_BITS_12 ) ; # endif <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 void log_flush ( LOG_MODE new_mode ) { CRYPTO_THREAD_write_lock ( stunnel_locks [ LOCK_LOG_MODE ] ) ; <S2SV_StartBug> if ( log_mode != LOG_MODE_CONFIGURED || new_mode != LOG_MODE_ERROR ) <S2SV_EndBug> log_mode = new_mode ; if ( new_mode != LOG_MODE_BUFFER ) { CRYPTO_THREAD_write_lock ( stunnel_locks [ LOCK_LOG_BUFFER ] ) ; while ( head ) { struct LIST * tmp = head ; head = head -> next ; log_raw ( tmp -> opt , tmp -> level , tmp -> stamp , tmp -> id , tmp -> text ) ; str_free ( tmp ) ; } head = tail = NULL ; CRYPTO_THREAD_unlock ( stunnel_locks [ LOCK_LOG_BUFFER ] ) ; } CRYPTO_THREAD_unlock ( stunnel_locks [ LOCK_LOG_MODE ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; <S2SV_ModEnd> log_mode = new_mode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 qboolean S_AL_Init ( soundInterface_t * si ) { # ifdef USE_OPENAL const char * device = NULL ; const char * inputdevice = NULL ; int i ; if ( ! si ) { return qfalse ; } for ( i = 0 ; i < MAX_RAW_STREAMS ; i ++ ) { streamSourceHandles [ i ] = - 1 ; streamPlaying [ i ] = qfalse ; streamSources [ i ] = 0 ; streamNumBuffers [ i ] = 0 ; streamBufIndex [ i ] = 0 ; } s_alPrecache = Cvar_Get ( \"s_alPrecache\" , \"1\" , CVAR_ARCHIVE ) ; s_alGain = Cvar_Get ( \"s_alGain\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alSources = Cvar_Get ( \"s_alSources\" , \"128\" , CVAR_ARCHIVE ) ; s_alDopplerFactor = Cvar_Get ( \"s_alDopplerFactor\" , \"1.0\" , CVAR_ARCHIVE ) ; s_alDopplerSpeed = Cvar_Get ( \"s_alDopplerSpeed\" , \"9000\" , CVAR_ARCHIVE ) ; s_alMinDistance = Cvar_Get ( \"s_alMinDistance\" , \"120\" , CVAR_CHEAT ) ; s_alMaxDistance = Cvar_Get ( \"s_alMaxDistance\" , \"1024\" , CVAR_CHEAT ) ; s_alRolloff = Cvar_Get ( \"s_alRolloff\" , \"2\" , CVAR_CHEAT ) ; s_alGraceDistance = Cvar_Get ( \"s_alGraceDistance\" , \"512\" , CVAR_CHEAT ) ; <S2SV_StartBug> s_alDriver = Cvar_Get ( \"s_alDriver\" , ALDRIVER_DEFAULT , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> s_alInputDevice = Cvar_Get ( \"s_alInputDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_StartBug> s_alDevice = Cvar_Get ( \"s_alDevice\" , \"\" , CVAR_ARCHIVE | CVAR_LATCH ) ; <S2SV_EndBug> if ( ! QAL_Init ( s_alDriver -> string ) ) { # if defined ( _WIN32 ) if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) && ! QAL_Init ( \"OpenAL64.dll\" ) ) { # elif defined ( __APPLE__ ) if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) && ! QAL_Init ( \"/System/Library/Frameworks/OpenAL.framework/OpenAL\" ) ) { # else if ( ! Q_stricmp ( s_alDriver -> string , ALDRIVER_DEFAULT ) || ! QAL_Init ( ALDRIVER_DEFAULT ) ) { # endif return qfalse ; } } device = s_alDevice -> string ; if ( device && ! * device ) device = NULL ; inputdevice = s_alInputDevice -> string ; if ( inputdevice && ! * inputdevice ) inputdevice = NULL ; enumeration_all_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATE_ALL_EXT\" ) ; enumeration_ext = qalcIsExtensionPresent ( NULL , \"ALC_ENUMERATION_EXT\" ) ; if ( enumeration_ext || enumeration_all_ext ) { char devicenames [ 16384 ] = \"\" ; const char * devicelist ; # ifdef _WIN32 const char * defaultdevice ; # endif int curlen ; if ( enumeration_all_ext ) { devicelist = qalcGetString ( NULL , ALC_ALL_DEVICES_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_ALL_DEVICES_SPECIFIER ) ; # endif } else { devicelist = qalcGetString ( NULL , ALC_DEVICE_SPECIFIER ) ; # ifdef _WIN32 defaultdevice = qalcGetString ( NULL , ALC_DEFAULT_DEVICE_SPECIFIER ) ; # endif enumeration_ext = qtrue ; } # ifdef _WIN32 if ( ! device && defaultdevice && ! strcmp ( defaultdevice , \"Generic<S2SV_blank>Hardware\" ) ) device = \"Generic<S2SV_blank>Software\" ; # endif if ( devicelist ) { while ( ( curlen = strlen ( devicelist ) ) ) { Q_strcat ( devicenames , sizeof ( devicenames ) , devicelist ) ; Q_strcat ( devicenames , sizeof ( devicenames ) , \"\\\\n\" ) ; devicelist += curlen + 1 ; } } s_alAvailableDevices = Cvar_Get ( \"s_alAvailableDevices\" , devicenames , CVAR_ROM | CVAR_NORESTART ) ; } alDevice = qalcOpenDevice ( device ) ; if ( ! alDevice && device ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , device ) ; alDevice = qalcOpenDevice ( NULL ) ; } if ( ! alDevice ) { QAL_Shutdown ( ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>device.\\\\n\" ) ; return qfalse ; } alContext = qalcCreateContext ( alDevice , NULL ) ; if ( ! alContext ) { QAL_Shutdown ( ) ; qalcCloseDevice ( alDevice ) ; Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>OpenAL<S2SV_blank>context.\\\\n\" ) ; return qfalse ; } qalcMakeContextCurrent ( alContext ) ; S_AL_BufferInit ( ) ; S_AL_SrcInit ( ) ; Com_Printf ( \"Allocated<S2SV_blank>%d<S2SV_blank>sources.\\\\n\" , srcCount ) ; qalDistanceModel ( AL_INVERSE_DISTANCE_CLAMPED ) ; qalDopplerFactor ( s_alDopplerFactor -> value ) ; qalSpeedOfSound ( s_alDopplerSpeed -> value ) ; # ifdef USE_VOIP s_alCapture = Cvar_Get ( \"s_alCapture\" , \"1\" , CVAR_ARCHIVE | CVAR_LATCH ) ; if ( ! s_alCapture -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>by<S2SV_blank>user<S2SV_blank>(\\'+set<S2SV_blank>s_alCapture<S2SV_blank>1\\'<S2SV_blank>to<S2SV_blank>enable)\\\\n\" ) ; } # if USE_MUMBLE else if ( cl_useMumble -> integer ) { Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>support<S2SV_blank>disabled<S2SV_blank>for<S2SV_blank>Mumble<S2SV_blank>support\\\\n\" ) ; } # endif else { # ifdef __APPLE__ if ( qalcCaptureOpenDevice == NULL ) # else if ( ! qalcIsExtensionPresent ( NULL , \"ALC_EXT_capture\" ) ) # endif { Com_Printf ( \"No<S2SV_blank>ALC_EXT_capture<S2SV_blank>support,<S2SV_blank>can\\'t<S2SV_blank>record<S2SV_blank>audio.\\\\n\" ) ; } else { char inputdevicenames [ 16384 ] = \"\" ; const char * inputdevicelist ; const char * defaultinputdevice ; int curlen ; capture_ext = qtrue ; inputdevicelist = qalcGetString ( NULL , ALC_CAPTURE_DEVICE_SPECIFIER ) ; defaultinputdevice = qalcGetString ( NULL , ALC_CAPTURE_DEFAULT_DEVICE_SPECIFIER ) ; if ( inputdevicelist ) { while ( ( curlen = strlen ( inputdevicelist ) ) ) { Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , inputdevicelist ) ; Q_strcat ( inputdevicenames , sizeof ( inputdevicenames ) , \"\\\\n\" ) ; inputdevicelist += curlen + 1 ; } } s_alAvailableInputDevices = Cvar_Get ( \"s_alAvailableInputDevices\" , inputdevicenames , CVAR_ROM | CVAR_NORESTART ) ; Com_Printf ( \"OpenAL<S2SV_blank>default<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>is<S2SV_blank>\\'%s\\'\\\\n\" , defaultinputdevice ? defaultinputdevice : \"none\" ) ; alCaptureDevice = qalcCaptureOpenDevice ( inputdevice , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; if ( ! alCaptureDevice && inputdevice ) { Com_Printf ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>OpenAL<S2SV_blank>Input<S2SV_blank>device<S2SV_blank>\\'%s\\',<S2SV_blank>trying<S2SV_blank>default.\\\\n\" , inputdevice ) ; alCaptureDevice = qalcCaptureOpenDevice ( NULL , 48000 , AL_FORMAT_MONO16 , VOIP_MAX_PACKET_SAMPLES * 4 ) ; } Com_Printf ( \"OpenAL<S2SV_blank>capture<S2SV_blank>device<S2SV_blank>%s.\\\\n\" , ( alCaptureDevice == NULL ) ? \"failed<S2SV_blank>to<S2SV_blank>open\" : \"opened\" ) ; } } # endif si -> Shutdown = S_AL_Shutdown ; si -> StartSound = S_AL_StartSound ; si -> StartSoundEx = S_AL_StartSoundEx ; si -> StartLocalSound = S_AL_StartLocalSound ; si -> StartBackgroundTrack = S_AL_StartBackgroundTrack ; si -> StopBackgroundTrack = S_AL_StopBackgroundTrack ; si -> StartStreamingSound = S_AL_StartStreamingSound ; si -> GetVoiceAmplitude = S_AL_GetVoiceAmplitude ; si -> RawSamples = S_AL_RawSamples ; si -> StopAllSounds = S_AL_StopAllSounds ; si -> ClearLoopingSounds = S_AL_ClearLoopingSounds ; si -> AddLoopingSound = S_AL_AddLoopingSound ; si -> AddRealLoopingSound = S_AL_AddRealLoopingSound ; si -> StopLoopingSound = S_AL_StopLoopingSound ; si -> Respatialize = S_AL_Respatialize ; si -> UpdateEntityPosition = S_AL_UpdateEntityPosition ; si -> Update = S_AL_Update ; si -> DisableSounds = S_AL_DisableSounds ; si -> BeginRegistration = S_AL_BeginRegistration ; si -> RegisterSound = S_AL_RegisterSound ; si -> ClearSoundBuffer = S_AL_ClearSoundBuffer ; si -> SoundInfo = S_AL_SoundInfo ; si -> SoundList = S_AL_SoundList ; # ifdef USE_VOIP si -> StartCapture = S_AL_StartCapture ; si -> AvailableCaptureSamples = S_AL_AvailableCaptureSamples ; si -> Capture = S_AL_Capture ; si -> StopCapture = S_AL_StopCapture ; si -> MasterGain = S_AL_MasterGain ; # endif return qtrue ; # else return qfalse ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> CVAR_ARCHIVE | CVAR_LATCH | CVAR_PROTECTED <S2SV_ModStart> CVAR_LATCH ) ; if ( COM_CompareExtension ( s_alDriver -> string , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , s_alDriver -> string ) ; return qfalse ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2383\n\n```\nCWE-189 int i915_gem_execbuffer2 ( struct drm_device * dev , void * data , struct drm_file * file ) { struct drm_i915_gem_execbuffer2 * args = data ; struct drm_i915_gem_exec_object2 * exec2_list = NULL ; int ret ; <S2SV_StartBug> if ( args -> buffer_count < 1 ) { <S2SV_EndBug> DRM_DEBUG ( \"execbuf2<S2SV_blank>with<S2SV_blank>%d<S2SV_blank>buffers\\\\n\" , args -> buffer_count ) ; return - EINVAL ; } exec2_list = kmalloc ( sizeof ( * exec2_list ) * args -> buffer_count , GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY ) ; if ( exec2_list == NULL ) exec2_list = drm_malloc_ab ( sizeof ( * exec2_list ) , args -> buffer_count ) ; if ( exec2_list == NULL ) { DRM_DEBUG ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>exec<S2SV_blank>list<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>buffers\\\\n\" , args -> buffer_count ) ; return - ENOMEM ; } ret = copy_from_user ( exec2_list , ( struct drm_i915_relocation_entry __user * ) ( uintptr_t ) args -> buffers_ptr , sizeof ( * exec2_list ) * args -> buffer_count ) ; if ( ret != 0 ) { DRM_DEBUG ( \"copy<S2SV_blank>%d<S2SV_blank>exec<S2SV_blank>entries<S2SV_blank>failed<S2SV_blank>%d\\\\n\" , args -> buffer_count , ret ) ; drm_free_large ( exec2_list ) ; return - EFAULT ; } ret = i915_gem_do_execbuffer ( dev , data , file , args , exec2_list ) ; if ( ! ret ) { ret = copy_to_user ( ( struct drm_i915_relocation_entry __user * ) ( uintptr_t ) args -> buffers_ptr , exec2_list , sizeof ( * exec2_list ) * args -> buffer_count ) ; if ( ret ) { ret = - EFAULT ; DRM_DEBUG ( \"failed<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>%d<S2SV_blank>exec<S2SV_blank>entries<S2SV_blank>\" \"back<S2SV_blank>to<S2SV_blank>user<S2SV_blank>(%d)\\\\n\" , args -> buffer_count , ret ) ; } } drm_free_large ( exec2_list ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer_count < 1 || args -> buffer_count > UINT_MAX / sizeof ( * exec2_list )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9717\n\n```\nCWE-284 static void umount_tree ( struct mount * mnt , enum umount_tree_flags how ) { LIST_HEAD ( tmp_list ) ; struct mount * p ; if ( how & UMOUNT_PROPAGATE ) propagate_mount_unlock ( mnt ) ; for ( p = mnt ; p ; p = next_mnt ( p , mnt ) ) { p -> mnt . mnt_flags |= MNT_UMOUNT ; list_move ( & p -> mnt_list , & tmp_list ) ; } list_for_each_entry ( p , & tmp_list , mnt_list ) { list_del_init ( & p -> mnt_child ) ; } if ( how & UMOUNT_PROPAGATE ) propagate_umount ( & tmp_list ) ; while ( ! list_empty ( & tmp_list ) ) { <S2SV_StartBug> p = list_first_entry ( & tmp_list , struct mount , mnt_list ) ; <S2SV_EndBug> list_del_init ( & p -> mnt_expire ) ; list_del_init ( & p -> mnt_list ) ; __touch_mnt_namespace ( p -> mnt_ns ) ; p -> mnt_ns = NULL ; if ( how & UMOUNT_SYNC ) p -> mnt . mnt_flags |= MNT_SYNC_UMOUNT ; <S2SV_StartBug> pin_insert_group ( & p -> mnt_umount , & p -> mnt_parent -> mnt , & unmounted ) ; <S2SV_EndBug> if ( mnt_has_parent ( p ) ) { mnt_add_count ( p -> mnt_parent , - 1 ) ; <S2SV_StartBug> umount_mnt ( p ) ; <S2SV_EndBug> } <S2SV_StartBug> change_mnt_propagation ( p , MS_PRIVATE ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { bool disconnect ; <S2SV_ModStart> |= MNT_SYNC_UMOUNT ; disconnect = ! IS_MNT_LOCKED_AND_LAZY ( p ) ; <S2SV_ModStart> -> mnt , disconnect ? & unmounted : NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> 1 ) ; if ( ! disconnect ) { list_add_tail ( & p -> mnt_child , & p -> mnt_parent -> mnt_mounts ) ; } else { <S2SV_ModStart> ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7584\n\n```\nCWE-119 php_stream * php_stream_url_wrap_http_ex ( php_stream_wrapper * wrapper , const char * path , const char * mode , int options , char * * opened_path , php_stream_context * context , int redirect_max , int flags STREAMS_DC TSRMLS_DC ) { php_stream * stream = NULL ; php_url * resource = NULL ; int use_ssl ; int use_proxy = 0 ; char * scratch = NULL ; char * tmp = NULL ; char * ua_str = NULL ; zval * * ua_zval = NULL , * * tmpzval = NULL , * ssl_proxy_peer_name = NULL ; int scratch_len = 0 ; int body = 0 ; char location [ HTTP_HEADER_BLOCK_SIZE ] ; zval * response_header = NULL ; int reqok = 0 ; char * http_header_line = NULL ; char tmp_line [ 128 ] ; size_t chunk_size = 0 , file_size = 0 ; int eol_detect = 0 ; char * transport_string , * errstr = NULL ; int transport_len , have_header = 0 , request_fulluri = 0 , ignore_errors = 0 ; char * protocol_version = NULL ; int protocol_version_len = 3 ; struct timeval timeout ; char * user_headers = NULL ; int header_init = ( ( flags & HTTP_WRAPPER_HEADER_INIT ) != 0 ) ; int redirected = ( ( flags & HTTP_WRAPPER_REDIRECTED ) != 0 ) ; int follow_location = 1 ; php_stream_filter * transfer_encoding = NULL ; int response_code ; tmp_line [ 0 ] = '\\\\0' ; if ( redirect_max < 1 ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"Redirection<S2SV_blank>limit<S2SV_blank>reached,<S2SV_blank>aborting\" ) ; return NULL ; } resource = php_url_parse ( path ) ; if ( resource == NULL ) { return NULL ; } if ( strncasecmp ( resource -> scheme , \"http\" , sizeof ( \"http\" ) ) && strncasecmp ( resource -> scheme , \"https\" , sizeof ( \"https\" ) ) ) { if ( ! context || php_stream_context_get_option ( context , wrapper -> wops -> label , \"proxy\" , & tmpzval ) == FAILURE || Z_TYPE_PP ( tmpzval ) != IS_STRING || Z_STRLEN_PP ( tmpzval ) <= 0 ) { php_url_free ( resource ) ; return php_stream_open_wrapper_ex ( path , mode , REPORT_ERRORS , NULL , context ) ; } request_fulluri = 1 ; use_ssl = 0 ; use_proxy = 1 ; transport_len = Z_STRLEN_PP ( tmpzval ) ; transport_string = estrndup ( Z_STRVAL_PP ( tmpzval ) , Z_STRLEN_PP ( tmpzval ) ) ; } else { if ( strpbrk ( mode , \"awx+\" ) ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"HTTP<S2SV_blank>wrapper<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>writeable<S2SV_blank>connections\" ) ; php_url_free ( resource ) ; return NULL ; } use_ssl = resource -> scheme && ( strlen ( resource -> scheme ) > 4 ) && resource -> scheme [ 4 ] == 's' ; if ( use_ssl && resource -> port == 0 ) resource -> port = 443 ; else if ( resource -> port == 0 ) resource -> port = 80 ; if ( context && php_stream_context_get_option ( context , wrapper -> wops -> label , \"proxy\" , & tmpzval ) == SUCCESS && Z_TYPE_PP ( tmpzval ) == IS_STRING && Z_STRLEN_PP ( tmpzval ) > 0 ) { use_proxy = 1 ; transport_len = Z_STRLEN_PP ( tmpzval ) ; transport_string = estrndup ( Z_STRVAL_PP ( tmpzval ) , Z_STRLEN_PP ( tmpzval ) ) ; } else { transport_len = spprintf ( & transport_string , 0 , \"%s://%s:%d\" , use_ssl ? \"ssl\" : \"tcp\" , resource -> host , resource -> port ) ; } } if ( context && php_stream_context_get_option ( context , wrapper -> wops -> label , \"timeout\" , & tmpzval ) == SUCCESS ) { SEPARATE_ZVAL ( tmpzval ) ; convert_to_double_ex ( tmpzval ) ; timeout . tv_sec = ( time_t ) Z_DVAL_PP ( tmpzval ) ; timeout . tv_usec = ( size_t ) ( ( Z_DVAL_PP ( tmpzval ) - timeout . tv_sec ) * 1000000 ) ; } else { timeout . tv_sec = FG ( default_socket_timeout ) ; timeout . tv_usec = 0 ; } stream = php_stream_xport_create ( transport_string , transport_len , options , STREAM_XPORT_CLIENT | STREAM_XPORT_CONNECT , NULL , & timeout , context , & errstr , NULL ) ; if ( stream ) { php_stream_set_option ( stream , PHP_STREAM_OPTION_READ_TIMEOUT , 0 , & timeout ) ; } if ( errstr ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"%s\" , errstr ) ; efree ( errstr ) ; errstr = NULL ; } efree ( transport_string ) ; if ( stream && use_proxy && use_ssl ) { smart_str header = { 0 } ; if ( ! context || php_stream_context_get_option ( context , \"ssl\" , \"peer_name\" , & tmpzval ) == FAILURE ) { MAKE_STD_ZVAL ( ssl_proxy_peer_name ) ; ZVAL_STRING ( ssl_proxy_peer_name , resource -> host , 1 ) ; php_stream_context_set_option ( stream -> context , \"ssl\" , \"peer_name\" , ssl_proxy_peer_name ) ; } smart_str_appendl ( & header , \"CONNECT<S2SV_blank>\" , sizeof ( \"CONNECT<S2SV_blank>\" ) - 1 ) ; smart_str_appends ( & header , resource -> host ) ; smart_str_appendc ( & header , ':' ) ; smart_str_append_unsigned ( & header , resource -> port ) ; smart_str_appendl ( & header , \"<S2SV_blank>HTTP/1.0\\\\r\\\\n\" , sizeof ( \"<S2SV_blank>HTTP/1.0\\\\r\\\\n\" ) - 1 ) ; if ( context && php_stream_context_get_option ( context , \"http\" , \"header\" , & tmpzval ) == SUCCESS ) { char * s , * p ; if ( Z_TYPE_PP ( tmpzval ) == IS_ARRAY ) { HashPosition pos ; zval * * tmpheader = NULL ; for ( zend_hash_internal_pointer_reset_ex ( Z_ARRVAL_PP ( tmpzval ) , & pos ) ; SUCCESS == zend_hash_get_current_data_ex ( Z_ARRVAL_PP ( tmpzval ) , ( void * ) & tmpheader , & pos ) ; zend_hash_move_forward_ex ( Z_ARRVAL_PP ( tmpzval ) , & pos ) ) { if ( Z_TYPE_PP ( tmpheader ) == IS_STRING ) { s = Z_STRVAL_PP ( tmpheader ) ; do { while ( * s == '<S2SV_blank>' || * s == '\\\\t' ) s ++ ; p = s ; while ( * p != 0 && * p != ':' && * p != '\\\\r' && * p != '\\\\n' ) p ++ ; if ( * p == ':' ) { p ++ ; if ( p - s == sizeof ( \"Proxy-Authorization:\" ) - 1 && zend_binary_strcasecmp ( s , sizeof ( \"Proxy-Authorization:\" ) - 1 , \"Proxy-Authorization:\" , sizeof ( \"Proxy-Authorization:\" ) - 1 ) == 0 ) { while ( * p != 0 && * p != '\\\\r' && * p != '\\\\n' ) p ++ ; smart_str_appendl ( & header , s , p - s ) ; smart_str_appendl ( & header , \"\\\\r\\\\n\" , sizeof ( \"\\\\r\\\\n\" ) - 1 ) ; goto finish ; } else { while ( * p != 0 && * p != '\\\\r' && * p != '\\\\n' ) p ++ ; } } s = p ; while ( * s == '\\\\r' || * s == '\\\\n' ) s ++ ; } while ( * s != 0 ) ; } } } else if ( Z_TYPE_PP ( tmpzval ) == IS_STRING && Z_STRLEN_PP ( tmpzval ) ) { s = Z_STRVAL_PP ( tmpzval ) ; do { while ( * s == '<S2SV_blank>' || * s == '\\\\t' ) s ++ ; p = s ; while ( * p != 0 && * p != ':' && * p != '\\\\r' && * p != '\\\\n' ) p ++ ; if ( * p == ':' ) { p ++ ; if ( p - s == sizeof ( \"Proxy-Authorization:\" ) - 1 && zend_binary_strcasecmp ( s , sizeof ( \"Proxy-Authorization:\" ) - 1 , \"Proxy-Authorization:\" , sizeof ( \"Proxy-Authorization:\" ) - 1 ) == 0 ) { while ( * p != 0 && * p != '\\\\r' && * p != '\\\\n' ) p ++ ; smart_str_appendl ( & header , s , p - s ) ; smart_str_appendl ( & header , \"\\\\r\\\\n\" , sizeof ( \"\\\\r\\\\n\" ) - 1 ) ; goto finish ; } else { while ( * p != 0 && * p != '\\\\r' && * p != '\\\\n' ) p ++ ; } } s = p ; while ( * s == '\\\\r' || * s == '\\\\n' ) s ++ ; } while ( * s != 0 ) ; } } finish : smart_str_appendl ( & header , \"\\\\r\\\\n\" , sizeof ( \"\\\\r\\\\n\" ) - 1 ) ; if ( php_stream_write ( stream , header . c , header . len ) != header . len ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"Cannot<S2SV_blank>connect<S2SV_blank>to<S2SV_blank>HTTPS<S2SV_blank>server<S2SV_blank>through<S2SV_blank>proxy\" ) ; php_stream_close ( stream ) ; stream = NULL ; } smart_str_free ( & header ) ; if ( stream ) { char header_line [ HTTP_HEADER_BLOCK_SIZE ] ; while ( php_stream_gets ( stream , header_line , HTTP_HEADER_BLOCK_SIZE - 1 ) != NULL ) { if ( header_line [ 0 ] == '\\\\n' || header_line [ 0 ] == '\\\\r' || header_line [ 0 ] == '\\\\0' ) { break ; } } } if ( stream ) { if ( php_stream_xport_crypto_setup ( stream , STREAM_CRYPTO_METHOD_SSLv23_CLIENT , NULL TSRMLS_CC ) < 0 || php_stream_xport_crypto_enable ( stream , 1 TSRMLS_CC ) < 0 ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"Cannot<S2SV_blank>connect<S2SV_blank>to<S2SV_blank>HTTPS<S2SV_blank>server<S2SV_blank>through<S2SV_blank>proxy\" ) ; php_stream_close ( stream ) ; stream = NULL ; } } } if ( stream == NULL ) goto out ; if ( options & STREAM_WILL_CAST ) chunk_size = php_stream_set_chunk_size ( stream , 1 ) ; eol_detect = stream -> flags & ( PHP_STREAM_FLAG_DETECT_EOL | PHP_STREAM_FLAG_EOL_MAC ) ; stream -> flags &= ~ ( PHP_STREAM_FLAG_DETECT_EOL | PHP_STREAM_FLAG_EOL_MAC ) ; php_stream_context_set ( stream , context ) ; php_stream_notify_info ( context , PHP_STREAM_NOTIFY_CONNECT , NULL , 0 ) ; if ( header_init && context && php_stream_context_get_option ( context , \"http\" , \"max_redirects\" , & tmpzval ) == SUCCESS ) { SEPARATE_ZVAL ( tmpzval ) ; convert_to_long_ex ( tmpzval ) ; redirect_max = Z_LVAL_PP ( tmpzval ) ; } if ( context && php_stream_context_get_option ( context , \"http\" , \"method\" , & tmpzval ) == SUCCESS ) { if ( Z_TYPE_PP ( tmpzval ) == IS_STRING && Z_STRLEN_PP ( tmpzval ) > 0 ) { if ( ! redirected || ( Z_STRLEN_PP ( tmpzval ) == 3 && memcmp ( \"GET\" , Z_STRVAL_PP ( tmpzval ) , 3 ) == 0 ) || ( Z_STRLEN_PP ( tmpzval ) == 4 && memcmp ( \"HEAD\" , Z_STRVAL_PP ( tmpzval ) , 4 ) == 0 ) ) { scratch_len = strlen ( path ) + 29 + Z_STRLEN_PP ( tmpzval ) ; scratch = emalloc ( scratch_len ) ; strlcpy ( scratch , Z_STRVAL_PP ( tmpzval ) , Z_STRLEN_PP ( tmpzval ) + 1 ) ; strncat ( scratch , \"<S2SV_blank>\" , 1 ) ; } } } if ( context && php_stream_context_get_option ( context , \"http\" , \"protocol_version\" , & tmpzval ) == SUCCESS ) { SEPARATE_ZVAL ( tmpzval ) ; convert_to_double_ex ( tmpzval ) ; protocol_version_len = spprintf ( & protocol_version , 0 , \"%.1F\" , Z_DVAL_PP ( tmpzval ) ) ; } if ( ! scratch ) { scratch_len = strlen ( path ) + 29 + protocol_version_len ; scratch = emalloc ( scratch_len ) ; strncpy ( scratch , \"GET<S2SV_blank>\" , scratch_len ) ; } if ( ! request_fulluri && context && php_stream_context_get_option ( context , \"http\" , \"request_fulluri\" , & tmpzval ) == SUCCESS ) { zval ztmp = * * tmpzval ; zval_copy_ctor ( & ztmp ) ; convert_to_boolean ( & ztmp ) ; request_fulluri = Z_BVAL ( ztmp ) ? 1 : 0 ; zval_dtor ( & ztmp ) ; } if ( request_fulluri ) { strcat ( scratch , path ) ; } else { if ( resource -> path && * resource -> path ) { strlcat ( scratch , resource -> path , scratch_len ) ; } else { strlcat ( scratch , \"/\" , scratch_len ) ; } if ( resource -> query ) { strlcat ( scratch , \"?\" , scratch_len ) ; strlcat ( scratch , resource -> query , scratch_len ) ; } } if ( protocol_version ) { strlcat ( scratch , \"<S2SV_blank>HTTP/\" , scratch_len ) ; strlcat ( scratch , protocol_version , scratch_len ) ; strlcat ( scratch , \"\\\\r\\\\n\" , scratch_len ) ; } else { strlcat ( scratch , \"<S2SV_blank>HTTP/1.0\\\\r\\\\n\" , scratch_len ) ; } php_stream_write ( stream , scratch , strlen ( scratch ) ) ; if ( context && php_stream_context_get_option ( context , \"http\" , \"header\" , & tmpzval ) == SUCCESS ) { tmp = NULL ; if ( Z_TYPE_PP ( tmpzval ) == IS_ARRAY ) { HashPosition pos ; zval * * tmpheader = NULL ; smart_str tmpstr = { 0 } ; for ( zend_hash_internal_pointer_reset_ex ( Z_ARRVAL_PP ( tmpzval ) , & pos ) ; SUCCESS == zend_hash_get_current_data_ex ( Z_ARRVAL_PP ( tmpzval ) , ( void * ) & tmpheader , & pos ) ; zend_hash_move_forward_ex ( Z_ARRVAL_PP ( tmpzval ) , & pos ) ) { if ( Z_TYPE_PP ( tmpheader ) == IS_STRING ) { smart_str_appendl ( & tmpstr , Z_STRVAL_PP ( tmpheader ) , Z_STRLEN_PP ( tmpheader ) ) ; smart_str_appendl ( & tmpstr , \"\\\\r\\\\n\" , sizeof ( \"\\\\r\\\\n\" ) - 1 ) ; } } smart_str_0 ( & tmpstr ) ; if ( tmpstr . c ) { tmp = php_trim ( tmpstr . c , strlen ( tmpstr . c ) , NULL , 0 , NULL , 3 TSRMLS_CC ) ; smart_str_free ( & tmpstr ) ; } } if ( Z_TYPE_PP ( tmpzval ) == IS_STRING && Z_STRLEN_PP ( tmpzval ) ) { tmp = php_trim ( Z_STRVAL_PP ( tmpzval ) , Z_STRLEN_PP ( tmpzval ) , NULL , 0 , NULL , 3 TSRMLS_CC ) ; } if ( tmp && strlen ( tmp ) > 0 ) { char * s ; user_headers = estrdup ( tmp ) ; php_strtolower ( tmp , strlen ( tmp ) ) ; if ( ! header_init ) { strip_header ( user_headers , tmp , \"content-length:\" ) ; strip_header ( user_headers , tmp , \"content-type:\" ) ; } if ( ( s = strstr ( tmp , \"user-agent:\" ) ) && ( s == tmp || * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' || * ( s - 1 ) == '\\\\t' || * ( s - 1 ) == '<S2SV_blank>' ) ) { have_header |= HTTP_HEADER_USER_AGENT ; } if ( ( s = strstr ( tmp , \"host:\" ) ) && ( s == tmp || * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' || * ( s - 1 ) == '\\\\t' || * ( s - 1 ) == '<S2SV_blank>' ) ) { have_header |= HTTP_HEADER_HOST ; } if ( ( s = strstr ( tmp , \"from:\" ) ) && ( s == tmp || * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' || * ( s - 1 ) == '\\\\t' || * ( s - 1 ) == '<S2SV_blank>' ) ) { have_header |= HTTP_HEADER_FROM ; } if ( ( s = strstr ( tmp , \"authorization:\" ) ) && ( s == tmp || * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' || * ( s - 1 ) == '\\\\t' || * ( s - 1 ) == '<S2SV_blank>' ) ) { have_header |= HTTP_HEADER_AUTH ; } if ( ( s = strstr ( tmp , \"content-length:\" ) ) && ( s == tmp || * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' || * ( s - 1 ) == '\\\\t' || * ( s - 1 ) == '<S2SV_blank>' ) ) { have_header |= HTTP_HEADER_CONTENT_LENGTH ; } if ( ( s = strstr ( tmp , \"content-type:\" ) ) && ( s == tmp || * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' || * ( s - 1 ) == '\\\\t' || * ( s - 1 ) == '<S2SV_blank>' ) ) { have_header |= HTTP_HEADER_TYPE ; } if ( ( s = strstr ( tmp , \"connection:\" ) ) && ( s == tmp || * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' || * ( s - 1 ) == '\\\\t' || * ( s - 1 ) == '<S2SV_blank>' ) ) { have_header |= HTTP_HEADER_CONNECTION ; } if ( use_proxy && use_ssl && ( s = strstr ( tmp , \"proxy-authorization:\" ) ) && ( s == tmp || * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' || * ( s - 1 ) == '\\\\t' || * ( s - 1 ) == '<S2SV_blank>' ) ) { char * p = s + sizeof ( \"proxy-authorization:\" ) - 1 ; while ( s > tmp && ( * ( s - 1 ) == '<S2SV_blank>' || * ( s - 1 ) == '\\\\t' ) ) s -- ; while ( * p != 0 && * p != '\\\\r' && * p != '\\\\n' ) p ++ ; while ( * p == '\\\\r' || * p == '\\\\n' ) p ++ ; if ( * p == 0 ) { if ( s == tmp ) { efree ( user_headers ) ; user_headers = NULL ; } else { while ( s > tmp && ( * ( s - 1 ) == '\\\\r' || * ( s - 1 ) == '\\\\n' ) ) s -- ; user_headers [ s - tmp ] = 0 ; } } else { memmove ( user_headers + ( s - tmp ) , user_headers + ( p - tmp ) , strlen ( p ) + 1 ) ; } } } if ( tmp ) { efree ( tmp ) ; } } if ( ( ( have_header & HTTP_HEADER_AUTH ) == 0 ) && resource -> user ) { php_url_decode ( resource -> user , strlen ( resource -> user ) ) ; strcpy ( scratch , resource -> user ) ; strcat ( scratch , \":\" ) ; if ( resource -> pass ) { php_url_decode ( resource -> pass , strlen ( resource -> pass ) ) ; strcat ( scratch , resource -> pass ) ; } tmp = ( char * ) php_base64_encode ( ( unsigned char * ) scratch , strlen ( scratch ) , NULL ) ; if ( snprintf ( scratch , scratch_len , \"Authorization:<S2SV_blank>Basic<S2SV_blank>%s\\\\r\\\\n\" , tmp ) > 0 ) { php_stream_write ( stream , scratch , strlen ( scratch ) ) ; php_stream_notify_info ( context , PHP_STREAM_NOTIFY_AUTH_REQUIRED , NULL , 0 ) ; } efree ( tmp ) ; tmp = NULL ; } if ( ( ( have_header & HTTP_HEADER_FROM ) == 0 ) && FG ( from_address ) ) { if ( snprintf ( scratch , scratch_len , \"From:<S2SV_blank>%s\\\\r\\\\n\" , FG ( from_address ) ) > 0 ) php_stream_write ( stream , scratch , strlen ( scratch ) ) ; } if ( ( have_header & HTTP_HEADER_HOST ) == 0 ) { if ( ( use_ssl && resource -> port != 443 && resource -> port != 0 ) || ( ! use_ssl && resource -> port != 80 && resource -> port != 0 ) ) { if ( snprintf ( scratch , scratch_len , \"Host:<S2SV_blank>%s:%i\\\\r\\\\n\" , resource -> host , resource -> port ) > 0 ) php_stream_write ( stream , scratch , strlen ( scratch ) ) ; } else { if ( snprintf ( scratch , scratch_len , \"Host:<S2SV_blank>%s\\\\r\\\\n\" , resource -> host ) > 0 ) { php_stream_write ( stream , scratch , strlen ( scratch ) ) ; } } } if ( ( have_header & HTTP_HEADER_CONNECTION ) == 0 ) { php_stream_write_string ( stream , \"Connection:<S2SV_blank>close\\\\r\\\\n\" ) ; } if ( context && php_stream_context_get_option ( context , \"http\" , \"user_agent\" , & ua_zval ) == SUCCESS && Z_TYPE_PP ( ua_zval ) == IS_STRING ) { ua_str = Z_STRVAL_PP ( ua_zval ) ; } else if ( FG ( user_agent ) ) { ua_str = FG ( user_agent ) ; } if ( ( ( have_header & HTTP_HEADER_USER_AGENT ) == 0 ) && ua_str ) { # define _UA_HEADER \"User-Agent:<S2SV_blank>%s\\\\r\\\\n\" char * ua ; size_t ua_len ; ua_len = sizeof ( _UA_HEADER ) + strlen ( ua_str ) ; if ( ua_len > sizeof ( _UA_HEADER ) ) { ua = emalloc ( ua_len + 1 ) ; if ( ( ua_len = slprintf ( ua , ua_len , _UA_HEADER , ua_str ) ) > 0 ) { ua [ ua_len ] = 0 ; php_stream_write ( stream , ua , ua_len ) ; } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Cannot<S2SV_blank>construct<S2SV_blank>User-agent<S2SV_blank>header\" ) ; } if ( ua ) { efree ( ua ) ; } } } if ( user_headers ) { if ( header_init && context && ! ( have_header & HTTP_HEADER_CONTENT_LENGTH ) && php_stream_context_get_option ( context , \"http\" , \"content\" , & tmpzval ) == SUCCESS && Z_TYPE_PP ( tmpzval ) == IS_STRING && Z_STRLEN_PP ( tmpzval ) > 0 ) { scratch_len = slprintf ( scratch , scratch_len , \"Content-Length:<S2SV_blank>%d\\\\r\\\\n\" , Z_STRLEN_PP ( tmpzval ) ) ; php_stream_write ( stream , scratch , scratch_len ) ; have_header |= HTTP_HEADER_CONTENT_LENGTH ; } php_stream_write ( stream , user_headers , strlen ( user_headers ) ) ; php_stream_write ( stream , \"\\\\r\\\\n\" , sizeof ( \"\\\\r\\\\n\" ) - 1 ) ; efree ( user_headers ) ; } if ( header_init && context && php_stream_context_get_option ( context , \"http\" , \"content\" , & tmpzval ) == SUCCESS && Z_TYPE_PP ( tmpzval ) == IS_STRING && Z_STRLEN_PP ( tmpzval ) > 0 ) { if ( ! ( have_header & HTTP_HEADER_CONTENT_LENGTH ) ) { scratch_len = slprintf ( scratch , scratch_len , \"Content-Length:<S2SV_blank>%d\\\\r\\\\n\" , Z_STRLEN_PP ( tmpzval ) ) ; php_stream_write ( stream , scratch , scratch_len ) ; } if ( ! ( have_header & HTTP_HEADER_TYPE ) ) { php_stream_write ( stream , \"Content-Type:<S2SV_blank>application/x-www-form-urlencoded\\\\r\\\\n\" , sizeof ( \"Content-Type:<S2SV_blank>application/x-www-form-urlencoded\\\\r\\\\n\" ) - 1 ) ; php_error_docref ( NULL TSRMLS_CC , E_NOTICE , \"Content-type<S2SV_blank>not<S2SV_blank>specified<S2SV_blank>assuming<S2SV_blank>application/x-www-form-urlencoded\" ) ; } php_stream_write ( stream , \"\\\\r\\\\n\" , sizeof ( \"\\\\r\\\\n\" ) - 1 ) ; php_stream_write ( stream , Z_STRVAL_PP ( tmpzval ) , Z_STRLEN_PP ( tmpzval ) ) ; } else { php_stream_write ( stream , \"\\\\r\\\\n\" , sizeof ( \"\\\\r\\\\n\" ) - 1 ) ; } location [ 0 ] = '\\\\0' ; if ( ! EG ( active_symbol_table ) ) { zend_rebuild_symbol_table ( TSRMLS_C ) ; } if ( header_init ) { zval * ztmp ; MAKE_STD_ZVAL ( ztmp ) ; array_init ( ztmp ) ; ZEND_SET_SYMBOL ( EG ( active_symbol_table ) , \"http_response_header\" , ztmp ) ; } { zval * * rh ; if ( zend_hash_find ( EG ( active_symbol_table ) , \"http_response_header\" , sizeof ( \"http_response_header\" ) , ( void * * ) & rh ) != SUCCESS || Z_TYPE_PP ( rh ) != IS_ARRAY ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"HTTP<S2SV_blank>request<S2SV_blank>failed,<S2SV_blank>http_response_header<S2SV_blank>overwritten\" ) ; goto out ; } response_header = * rh ; Z_ADDREF_P ( response_header ) ; } if ( ! php_stream_eof ( stream ) ) { size_t tmp_line_len ; if ( php_stream_get_line ( stream , tmp_line , sizeof ( tmp_line ) - 1 , & tmp_line_len ) != NULL ) { zval * http_response ; if ( tmp_line_len > 9 ) { response_code = atoi ( tmp_line + 9 ) ; } else { response_code = 0 ; } if ( context && SUCCESS == php_stream_context_get_option ( context , \"http\" , \"ignore_errors\" , & tmpzval ) ) { ignore_errors = zend_is_true ( * tmpzval ) ; } if ( ( options & STREAM_ONLY_GET_HEADERS ) || ignore_errors ) { reqok = 1 ; } if ( response_code >= 100 && response_code < 200 ) { while ( ! php_stream_eof ( stream ) && php_stream_get_line ( stream , tmp_line , sizeof ( tmp_line ) - 1 , & tmp_line_len ) != NULL && ( tmp_line_len < sizeof ( \"HTTP/1\" ) - 1 || strncasecmp ( tmp_line , \"HTTP/1\" , sizeof ( \"HTTP/1\" ) - 1 ) ) ) ; if ( tmp_line_len > 9 ) { response_code = atoi ( tmp_line + 9 ) ; } else { response_code = 0 ; } } if ( response_code >= 200 && response_code < 400 ) { reqok = 1 ; } else { switch ( response_code ) { case 403 : php_stream_notify_error ( context , PHP_STREAM_NOTIFY_AUTH_RESULT , tmp_line , response_code ) ; break ; default : if ( ! tmp_line_len ) { tmp_line [ 0 ] = '\\\\0' ; } php_stream_notify_error ( context , PHP_STREAM_NOTIFY_FAILURE , tmp_line , response_code ) ; } } <S2SV_StartBug> if ( tmp_line [ tmp_line_len - 1 ] == '\\\\n' ) { <S2SV_EndBug> -- tmp_line_len ; <S2SV_StartBug> if ( tmp_line [ tmp_line_len - 1 ] == '\\\\r' ) { <S2SV_EndBug> -- tmp_line_len ; } } MAKE_STD_ZVAL ( http_response ) ; ZVAL_STRINGL ( http_response , tmp_line , tmp_line_len , 1 ) ; zend_hash_next_index_insert ( Z_ARRVAL_P ( response_header ) , & http_response , sizeof ( zval * ) , NULL ) ; } } else { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"HTTP<S2SV_blank>request<S2SV_blank>failed,<S2SV_blank>unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>socket!\" ) ; goto out ; } http_header_line = emalloc ( HTTP_HEADER_BLOCK_SIZE ) ; while ( ! body && ! php_stream_eof ( stream ) ) { size_t http_header_line_length ; if ( php_stream_get_line ( stream , http_header_line , HTTP_HEADER_BLOCK_SIZE , & http_header_line_length ) && * http_header_line != '\\\\n' && * http_header_line != '\\\\r' ) { char * e = http_header_line + http_header_line_length - 1 ; if ( * e != '\\\\n' ) { do { if ( php_stream_get_line ( stream , http_header_line , HTTP_HEADER_BLOCK_SIZE , & http_header_line_length ) == NULL ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>HTTP<S2SV_blank>headers\" ) ; goto out ; } e = http_header_line + http_header_line_length - 1 ; } while ( * e != '\\\\n' ) ; continue ; } while ( * e == '\\\\n' || * e == '\\\\r' ) { e -- ; } http_header_line_length = e - http_header_line + 1 ; http_header_line [ http_header_line_length ] = '\\\\0' ; if ( ! strncasecmp ( http_header_line , \"Location:<S2SV_blank>\" , 10 ) ) { if ( context && php_stream_context_get_option ( context , \"http\" , \"follow_location\" , & tmpzval ) == SUCCESS ) { SEPARATE_ZVAL ( tmpzval ) ; convert_to_long_ex ( tmpzval ) ; follow_location = Z_LVAL_PP ( tmpzval ) ; } else if ( ! ( response_code >= 300 && response_code < 304 || 307 == response_code || 308 == response_code ) ) { follow_location = 0 ; } strlcpy ( location , http_header_line + 10 , sizeof ( location ) ) ; } else if ( ! strncasecmp ( http_header_line , \"Content-Type:<S2SV_blank>\" , 14 ) ) { php_stream_notify_info ( context , PHP_STREAM_NOTIFY_MIME_TYPE_IS , http_header_line + 14 , 0 ) ; } else if ( ! strncasecmp ( http_header_line , \"Content-Length:<S2SV_blank>\" , 16 ) ) { file_size = atoi ( http_header_line + 16 ) ; php_stream_notify_file_size ( context , file_size , http_header_line , 0 ) ; } else if ( ! strncasecmp ( http_header_line , \"Transfer-Encoding:<S2SV_blank>chunked\" , sizeof ( \"Transfer-Encoding:<S2SV_blank>chunked\" ) ) ) { if ( ! ( options & STREAM_ONLY_GET_HEADERS ) ) { long decode = 1 ; if ( context && php_stream_context_get_option ( context , \"http\" , \"auto_decode\" , & tmpzval ) == SUCCESS ) { SEPARATE_ZVAL ( tmpzval ) ; convert_to_boolean ( * tmpzval ) ; decode = Z_LVAL_PP ( tmpzval ) ; } if ( decode ) { transfer_encoding = php_stream_filter_create ( \"dechunk\" , NULL , php_stream_is_persistent ( stream ) TSRMLS_CC ) ; if ( transfer_encoding ) { continue ; } } } } if ( http_header_line [ 0 ] == '\\\\0' ) { body = 1 ; } else { zval * http_header ; MAKE_STD_ZVAL ( http_header ) ; ZVAL_STRINGL ( http_header , http_header_line , http_header_line_length , 1 ) ; zend_hash_next_index_insert ( Z_ARRVAL_P ( response_header ) , & http_header , sizeof ( zval * ) , NULL ) ; } } else { break ; } } if ( ! reqok || ( location [ 0 ] != '\\\\0' && follow_location ) ) { if ( ! follow_location || ( ( ( options & STREAM_ONLY_GET_HEADERS ) || ignore_errors ) && redirect_max <= 1 ) ) { goto out ; } if ( location [ 0 ] != '\\\\0' ) php_stream_notify_info ( context , PHP_STREAM_NOTIFY_REDIRECTED , location , 0 ) ; php_stream_close ( stream ) ; stream = NULL ; if ( location [ 0 ] != '\\\\0' ) { char new_path [ HTTP_HEADER_BLOCK_SIZE ] ; char loc_path [ HTTP_HEADER_BLOCK_SIZE ] ; * new_path = '\\\\0' ; if ( strlen ( location ) < 8 || ( strncasecmp ( location , \"http://\" , sizeof ( \"http://\" ) - 1 ) && strncasecmp ( location , \"https://\" , sizeof ( \"https://\" ) - 1 ) && strncasecmp ( location , \"ftp://\" , sizeof ( \"ftp://\" ) - 1 ) && strncasecmp ( location , \"ftps://\" , sizeof ( \"ftps://\" ) - 1 ) ) ) { if ( * location != '/' ) { if ( * ( location + 1 ) != '\\\\0' && resource -> path ) { char * s = strrchr ( resource -> path , '/' ) ; if ( ! s ) { s = resource -> path ; if ( ! s [ 0 ] ) { efree ( s ) ; s = resource -> path = estrdup ( \"/\" ) ; } else { * s = '/' ; } } s [ 1 ] = '\\\\0' ; if ( resource -> path && * ( resource -> path ) == '/' && * ( resource -> path + 1 ) == '\\\\0' ) { snprintf ( loc_path , sizeof ( loc_path ) - 1 , \"%s%s\" , resource -> path , location ) ; } else { snprintf ( loc_path , sizeof ( loc_path ) - 1 , \"%s/%s\" , resource -> path , location ) ; } } else { snprintf ( loc_path , sizeof ( loc_path ) - 1 , \"/%s\" , location ) ; } } else { strlcpy ( loc_path , location , sizeof ( loc_path ) ) ; } if ( ( use_ssl && resource -> port != 443 ) || ( ! use_ssl && resource -> port != 80 ) ) { snprintf ( new_path , sizeof ( new_path ) - 1 , \"%s://%s:%d%s\" , resource -> scheme , resource -> host , resource -> port , loc_path ) ; } else { snprintf ( new_path , sizeof ( new_path ) - 1 , \"%s://%s%s\" , resource -> scheme , resource -> host , loc_path ) ; } } else { strlcpy ( new_path , location , sizeof ( new_path ) ) ; } php_url_free ( resource ) ; if ( ( resource = php_url_parse ( new_path ) ) == NULL ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"Invalid<S2SV_blank>redirect<S2SV_blank>URL!<S2SV_blank>%s\" , new_path ) ; goto out ; } <S2SV_StartBug> # define CHECK_FOR_CNTRL_CHARS ( val ) { if ( val ) { unsigned char * s , * e ; int l ; l = php_url_decode ( val , strlen ( val ) ) ; s = ( unsigned char * ) val ; e = s + l ; while ( s < e ) { if ( iscntrl ( * s ) ) { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"Invalid<S2SV_blank>redirect<S2SV_blank>URL!<S2SV_blank>%s\" , new_path ) ; goto out ; } s ++ ; } } } <S2SV_EndBug> if ( strncasecmp ( new_path , \"http://\" , sizeof ( \"http://\" ) - 1 ) || strncasecmp ( new_path , \"https://\" , sizeof ( \"https://\" ) - 1 ) ) { CHECK_FOR_CNTRL_CHARS ( resource -> user ) CHECK_FOR_CNTRL_CHARS ( resource -> pass ) CHECK_FOR_CNTRL_CHARS ( resource -> path ) } stream = php_stream_url_wrap_http_ex ( wrapper , new_path , mode , options , opened_path , context , -- redirect_max , HTTP_WRAPPER_REDIRECTED STREAMS_CC TSRMLS_CC ) ; } else { php_stream_wrapper_log_error ( wrapper , options TSRMLS_CC , \"HTTP<S2SV_blank>request<S2SV_blank>failed!<S2SV_blank>%s\" , tmp_line ) ; } } out : if ( protocol_version ) { efree ( protocol_version ) ; } if ( http_header_line ) { efree ( http_header_line ) ; } if ( scratch ) { efree ( scratch ) ; } if ( resource ) { php_url_free ( resource ) ; } if ( stream ) { if ( header_init ) { stream -> wrapperdata = response_header ; } else { if ( response_header ) { Z_DELREF_P ( response_header ) ; } } php_stream_notify_progress_init ( context , 0 , file_size ) ; if ( options & STREAM_WILL_CAST ) php_stream_set_chunk_size ( stream , chunk_size ) ; stream -> flags |= eol_detect ; stream -> position = 0 ; strlcpy ( stream -> mode , mode , sizeof ( stream -> mode ) ) ; if ( transfer_encoding ) { php_stream_filter_append ( & stream -> readfilters , transfer_encoding ) ; } } else { if ( response_header ) { Z_DELREF_P ( response_header ) ; } if ( transfer_encoding ) { php_stream_filter_free ( transfer_encoding TSRMLS_CC ) ; } } return stream ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( tmp_line_len >= 1 && <S2SV_ModStart> ; if ( tmp_line_len >= 1 && <S2SV_ModStart> ; } } \\\\\\n} <S2SV_ModEnd> if ( strncasecmp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3817\n\n```\nCWE-416 void comps_objrtree_unite ( COMPS_ObjRTree * rt1 , COMPS_ObjRTree * rt2 ) { COMPS_HSList * tmplist , * tmp_subnodes ; COMPS_HSListItem * it ; struct Pair { COMPS_HSList * subnodes ; char * key ; <S2SV_StartBug> char added ; <S2SV_EndBug> } * pair , * parent_pair ; pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = rt2 -> subnodes ; pair -> key = NULL ; tmplist = comps_hslist_create ( ) ; comps_hslist_init ( tmplist , NULL , NULL , & free ) ; comps_hslist_append ( tmplist , pair , 0 ) ; while ( tmplist -> first != NULL ) { it = tmplist -> first ; comps_hslist_remove ( tmplist , tmplist -> first ) ; tmp_subnodes = ( ( struct Pair * ) it -> data ) -> subnodes ; parent_pair = ( struct Pair * ) it -> data ; free ( it ) ; for ( it = tmp_subnodes -> first ; it != NULL ; it = it -> next ) { pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = ( ( COMPS_ObjRTreeData * ) it -> data ) -> subnodes ; if ( parent_pair -> key != NULL ) { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> key ) + strlen ( parent_pair -> key ) + 1 ) ) ; memcpy ( pair -> key , parent_pair -> key , sizeof ( char ) * strlen ( parent_pair -> key ) ) ; memcpy ( pair -> key + strlen ( parent_pair -> key ) , ( ( COMPS_ObjRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } else { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> key ) + 1 ) ) ; memcpy ( pair -> key , ( ( COMPS_ObjRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } if ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> data != NULL ) { comps_objrtree_set ( rt1 , pair -> key , ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> data ) ) ; } if ( ( ( COMPS_ObjRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } free ( parent_pair -> key ) ; free ( parent_pair ) ; } comps_hslist_destroy ( & tmplist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * key ; <S2SV_ModEnd> } * pair\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9763\n\n```\nCWE-119 static grub_err_t read_foo ( struct grub_disk * disk , grub_disk_addr_t sector , grub_size_t size , char * buf ) { <S2SV_StartBug> if ( disk != NULL ) { <S2SV_EndBug> <S2SV_StartBug> const int blocksize = 512 ; <S2SV_EndBug> int ret ; RIOBind * iob = disk -> data ; <S2SV_StartBug> if ( bio ) iob = bio ; <S2SV_EndBug> <S2SV_StartBug> ret = iob -> read_at ( iob -> io , delta + ( blocksize * sector ) , <S2SV_EndBug> <S2SV_StartBug> ( ut8 * ) buf , size * blocksize ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ret == - 1 ) <S2SV_EndBug> return 1 ; <S2SV_StartBug> } else eprintf ( \"oops.<S2SV_blank>no<S2SV_blank>disk\\\\n\" ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( ! disk ) { eprintf ( \"oops.<S2SV_blank>no<S2SV_blank>disk\\\\n\" ) ; return 1 ; } <S2SV_ModEnd> const int blocksize <S2SV_ModStart> blocksize = 512 <S2SV_ModEnd> ; RIOBind * <S2SV_ModStart> ( bio ) { <S2SV_ModStart> = bio ; } if ( <S2SV_ModEnd> iob -> read_at <S2SV_ModStart> * blocksize ) <S2SV_ModEnd> == - 1 <S2SV_ModStart> - 1 ) { <S2SV_ModStart> 1 ; } <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0723\n\n```\nCWE-200 long tty_ioctl ( struct file * file , unsigned int cmd , unsigned long arg ) { struct tty_struct * tty = file_tty ( file ) ; struct tty_struct * real_tty ; void __user * p = ( void __user * ) arg ; int retval ; struct tty_ldisc * ld ; if ( tty_paranoia_check ( tty , file_inode ( file ) , \"tty_ioctl\" ) ) return - EINVAL ; real_tty = tty_pair_get_tty ( tty ) ; switch ( cmd ) { case TIOCSETD : case TIOCSBRK : case TIOCCBRK : case TCSBRK : case TCSBRKP : retval = tty_check_change ( tty ) ; if ( retval ) return retval ; if ( cmd != TIOCCBRK ) { tty_wait_until_sent ( tty , 0 ) ; if ( signal_pending ( current ) ) return - EINTR ; } break ; } switch ( cmd ) { case TIOCSTI : return tiocsti ( tty , p ) ; case TIOCGWINSZ : return tiocgwinsz ( real_tty , p ) ; case TIOCSWINSZ : return tiocswinsz ( real_tty , p ) ; case TIOCCONS : return real_tty != tty ? - EINVAL : tioccons ( file ) ; case FIONBIO : return fionbio ( file , p ) ; case TIOCEXCL : set_bit ( TTY_EXCLUSIVE , & tty -> flags ) ; return 0 ; case TIOCNXCL : clear_bit ( TTY_EXCLUSIVE , & tty -> flags ) ; return 0 ; case TIOCGEXCL : { int excl = test_bit ( TTY_EXCLUSIVE , & tty -> flags ) ; return put_user ( excl , ( int __user * ) p ) ; } case TIOCNOTTY : if ( current -> signal -> tty != tty ) return - ENOTTY ; no_tty ( ) ; return 0 ; case TIOCSCTTY : return tiocsctty ( real_tty , file , arg ) ; case TIOCGPGRP : return tiocgpgrp ( tty , real_tty , p ) ; case TIOCSPGRP : return tiocspgrp ( tty , real_tty , p ) ; case TIOCGSID : return tiocgsid ( tty , real_tty , p ) ; case TIOCGETD : <S2SV_StartBug> return put_user ( tty -> ldisc -> ops -> num , ( int __user * ) p ) ; <S2SV_EndBug> case TIOCSETD : return tiocsetd ( tty , p ) ; case TIOCVHANGUP : if ( ! capable ( CAP_SYS_ADMIN ) ) return - EPERM ; tty_vhangup ( tty ) ; return 0 ; case TIOCGDEV : { unsigned int ret = new_encode_dev ( tty_devnum ( real_tty ) ) ; return put_user ( ret , ( unsigned int __user * ) p ) ; } case TIOCSBRK : if ( tty -> ops -> break_ctl ) return tty -> ops -> break_ctl ( tty , - 1 ) ; return 0 ; case TIOCCBRK : if ( tty -> ops -> break_ctl ) return tty -> ops -> break_ctl ( tty , 0 ) ; return 0 ; case TCSBRK : if ( ! arg ) return send_break ( tty , 250 ) ; return 0 ; case TCSBRKP : return send_break ( tty , arg ? arg * 100 : 250 ) ; case TIOCMGET : return tty_tiocmget ( tty , p ) ; case TIOCMSET : case TIOCMBIC : case TIOCMBIS : return tty_tiocmset ( tty , cmd , p ) ; case TIOCGICOUNT : retval = tty_tiocgicount ( tty , p ) ; if ( retval != - EINVAL ) return retval ; break ; case TCFLSH : switch ( arg ) { case TCIFLUSH : case TCIOFLUSH : tty_buffer_flush ( tty , NULL ) ; break ; } break ; case TIOCSSERIAL : tty_warn_deprecated_flags ( p ) ; break ; } if ( tty -> ops -> ioctl ) { retval = tty -> ops -> ioctl ( tty , cmd , arg ) ; if ( retval != - ENOIOCTLCMD ) return retval ; } ld = tty_ldisc_ref_wait ( tty ) ; retval = - EINVAL ; if ( ld -> ops -> ioctl ) { retval = ld -> ops -> ioctl ( tty , file , cmd , arg ) ; if ( retval == - ENOIOCTLCMD ) retval = - ENOTTY ; } tty_ldisc_deref ( ld ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> TIOCGETD : return tiocgetd ( tty , <S2SV_ModEnd> p ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-362 struct vm_area_struct * find_extend_vma ( struct mm_struct * mm , unsigned long addr ) { struct vm_area_struct * vma ; unsigned long start ; addr &= PAGE_MASK ; vma = find_vma ( mm , addr ) ; if ( ! vma ) return NULL ; if ( vma -> vm_start <= addr ) return vma ; if ( ! ( vma -> vm_flags & VM_GROWSDOWN ) ) return NULL ; <S2SV_StartBug> start = vma -> vm_start ; <S2SV_EndBug> if ( expand_stack ( vma , addr ) ) return NULL ; if ( vma -> vm_flags & VM_LOCKED ) populate_vma_page_range ( vma , addr , start , NULL ) ; return vma ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return NULL ; if ( ! mmget_still_valid ( mm ) ) return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t coapClientReadBody ( CoapClientRequest * request , void * data , size_t size , size_t * received ) { error_t error ; size_t n ; uint32_t value ; uint32_t blockPos ; uint32_t blockSzx ; size_t payloadLen ; const uint8_t * payload ; CoapMessage * requestMsg ; CoapMessage * responseMsg ; CoapCode responseCode ; error = NO_ERROR ; * received = 0 ; while ( * received < size ) { responseMsg = coapClientGetResponseMessage ( request ) ; error = coapClientReadPayload ( responseMsg , data , size - * received , & n ) ; if ( error == NO_ERROR ) { data = ( uint8_t * ) data + n ; * received += n ; } else if ( error == ERROR_END_OF_STREAM ) { requestMsg = coapClientGetRequestMessage ( request ) ; error = coapClientGetUintOption ( requestMsg , COAP_OPT_BLOCK2 , 0 , & value ) ; if ( ! error ) { blockPos = COAP_GET_BLOCK_POS ( value ) ; blockSzx = COAP_GET_BLOCK_SZX ( value ) ; } else { blockPos = 0 ; blockSzx = request -> rxBlockSzx ; } error = coapClientGetUintOption ( responseMsg , COAP_OPT_BLOCK2 , 0 , & value ) ; if ( ! error ) { if ( COAP_GET_BLOCK_SZX ( value ) >= COAP_BLOCK_SIZE_RESERVED ) { error = ERROR_FAILURE ; break ; } if ( COAP_GET_BLOCK_POS ( value ) != blockPos ) { error = ERROR_FAILURE ; break ; } if ( ! COAP_GET_BLOCK_M ( value ) ) { error = ERROR_END_OF_STREAM ; break ; } error = coapClientGetPayload ( responseMsg , & payload , & payloadLen ) ; if ( error ) break ; if ( payloadLen != COAP_GET_BLOCK_SIZE ( value ) ) { error = ERROR_FAILURE ; break ; } if ( blockSzx > COAP_GET_BLOCK_SZX ( value ) ) blockSzx = COAP_GET_BLOCK_SZX ( value ) ; blockPos += COAP_GET_BLOCK_SIZE ( value ) ; COAP_SET_BLOCK_NUM ( value , blockPos >> ( blockSzx + 4 ) ) ; COAP_SET_BLOCK_M ( value , 0 ) ; COAP_SET_BLOCK_SZX ( value , blockSzx ) ; error = coapClientSetUintOption ( requestMsg , COAP_OPT_BLOCK2 , 0 , value ) ; if ( error ) break ; error = coapClientSendRequest ( request , NULL , NULL ) ; if ( error ) break ; responseMsg = coapClientGetResponseMessage ( request ) ; error = coapClientGetResponseCode ( responseMsg , & responseCode ) ; if ( error ) break ; if ( COAP_GET_CODE_CLASS ( responseCode ) != COAP_CODE_CLASS_SUCCESS ) { error = ERROR_INVALID_STATUS ; break ; } } else { if ( blockPos == 0 ) <S2SV_StartBug> error = ERROR_END_OF_STREAM ; <S2SV_EndBug> <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> error = ERROR_FAILURE ; <S2SV_EndBug> break ; } } else { break ; } } if ( * received > 0 ) { if ( error == ERROR_END_OF_STREAM ) error = NO_ERROR ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) { <S2SV_ModStart> = ERROR_END_OF_STREAM ; } else { <S2SV_ModEnd> error = ERROR_FAILURE <S2SV_ModStart> = ERROR_FAILURE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static size_t encode_tiles ( VP9_COMP * cpi , uint8_t * data_ptr ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> vp9_writer residual_bc ; <S2SV_EndBug> int tile_row , tile_col ; <S2SV_StartBug> TOKENEXTRA * tok [ 4 ] [ 1 << 6 ] , * tok_end ; <S2SV_EndBug> size_t total_size = 0 ; const int tile_cols = 1 << cm -> log2_tile_cols ; const int tile_rows = 1 << cm -> log2_tile_rows ; <S2SV_StartBug> vpx_memset ( cm -> above_seg_context , 0 , sizeof ( * cm -> above_seg_context ) * <S2SV_EndBug> mi_cols_aligned_to_sb ( cm -> mi_cols ) ) ; <S2SV_StartBug> tok [ 0 ] [ 0 ] = cpi -> tok ; <S2SV_EndBug> for ( tile_row = 0 ; tile_row < tile_rows ; tile_row ++ ) { if ( tile_row ) tok [ tile_row ] [ 0 ] = tok [ tile_row - 1 ] [ tile_cols - 1 ] + cpi -> tok_count [ tile_row - 1 ] [ tile_cols - 1 ] ; for ( tile_col = 1 ; tile_col < tile_cols ; tile_col ++ ) tok [ tile_row ] [ tile_col ] = tok [ tile_row ] [ tile_col - 1 ] + cpi -> tok_count [ tile_row ] [ tile_col - 1 ] ; } for ( tile_row = 0 ; tile_row < tile_rows ; tile_row ++ ) { for ( tile_col = 0 ; tile_col < tile_cols ; tile_col ++ ) { TileInfo tile ; vp9_tile_init ( & tile , cm , tile_row , tile_col ) ; <S2SV_StartBug> tok_end = tok [ tile_row ] [ tile_col ] + cpi -> tok_count [ tile_row ] [ tile_col ] ; <S2SV_EndBug> if ( tile_col < tile_cols - 1 || tile_row < tile_rows - 1 ) <S2SV_StartBug> vp9_start_encode ( & residual_bc , data_ptr + total_size + 4 ) ; <S2SV_EndBug> else <S2SV_StartBug> vp9_start_encode ( & residual_bc , data_ptr + total_size ) ; <S2SV_EndBug> <S2SV_StartBug> write_modes ( cpi , & tile , & residual_bc , & tok [ tile_row ] [ tile_col ] , tok_end ) ; <S2SV_EndBug> <S2SV_StartBug> assert ( tok [ tile_row ] [ tile_col ] == tok_end ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_stop_encode ( & residual_bc ) ; <S2SV_EndBug> if ( tile_col < tile_cols - 1 || tile_row < tile_rows - 1 ) { mem_put_be32 ( data_ptr + total_size , residual_bc . pos ) ; total_size += 4 ; } total_size += residual_bc . pos ; } } return total_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> common ; vpx_writer <S2SV_ModEnd> residual_bc ; int <S2SV_ModStart> tile_col ; TOKENEXTRA <S2SV_ModEnd> * tok_end ; <S2SV_ModStart> -> log2_tile_rows ; memset <S2SV_ModEnd> ( cm -> <S2SV_ModStart> ) ) ; for ( tile_row = 0 ; tile_row < tile_rows ; tile_row ++ ) { for ( tile_col = 0 ; tile_col < tile_cols ; tile_col ++ ) { int tile_idx = tile_row * tile_cols + tile_col ; TOKENEXTRA * tok = cpi -> tile_tok [ tile_row ] [ tile_col ] <S2SV_ModEnd> ; tok_end = <S2SV_ModStart> ; tok_end = cpi -> tile_tok [ tile_row ] [ tile_col ] + <S2SV_ModEnd> cpi -> tok_count <S2SV_ModStart> - 1 ) vpx_start_encode <S2SV_ModEnd> ( & residual_bc <S2SV_ModStart> ) ; else vpx_start_encode <S2SV_ModEnd> ( & residual_bc <S2SV_ModStart> cpi , & cpi -> tile_data [ tile_idx ] . tile_info , <S2SV_ModEnd> & residual_bc , <S2SV_ModStart> , & tok <S2SV_ModEnd> , tok_end ) <S2SV_ModStart> assert ( tok <S2SV_ModEnd> == tok_end ) <S2SV_ModStart> tok_end ) ; vpx_stop_encode <S2SV_ModEnd> ( & residual_bc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1477\n\n```\nCWE-264 static void opl3_setup_voice ( int dev , int voice , int chn ) { <S2SV_StartBug> struct channel_info * info = <S2SV_EndBug> & synth_devs [ dev ] -> chn_info [ chn ] ; opl3_set_instr ( dev , voice , info -> pgm_num ) ; devc -> voc [ voice ] . bender = 0 ; devc -> voc [ voice ] . bender_range = info -> bender_range ; devc -> voc [ voice ] . volume = info -> controllers [ CTL_MAIN_VOLUME ] ; devc -> voc [ voice ] . panning = ( info -> controllers [ CTL_PAN ] * 2 ) - 128 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> channel_info * info ; if ( voice < 0 || voice >= devc -> nr_voice ) return ; if ( chn < 0 || chn > 15 ) return ; info\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19927\n\n```\nCWE-125 static void ttm_put_pages ( struct page * * pages , unsigned npages , int flags , enum ttm_caching_state cstate ) { struct ttm_page_pool * pool = ttm_get_pool ( flags , false , cstate ) ; # ifdef CONFIG_TRANSPARENT_HUGEPAGE struct ttm_page_pool * huge = ttm_get_pool ( flags , true , cstate ) ; # endif unsigned long irq_flags ; unsigned i ; if ( pool == NULL ) { i = 0 ; while ( i < npages ) { # ifdef CONFIG_TRANSPARENT_HUGEPAGE struct page * p = pages [ i ] ; # endif unsigned order = 0 , j ; if ( ! pages [ i ] ) { ++ i ; continue ; } # ifdef CONFIG_TRANSPARENT_HUGEPAGE if ( ! ( flags & TTM_PAGE_FLAG_DMA32 ) && ( npages - i ) >= HPAGE_PMD_NR ) { <S2SV_StartBug> for ( j = 0 ; j < HPAGE_PMD_NR ; ++ j ) <S2SV_EndBug> if ( p ++ != pages [ i + j ] ) break ; if ( j == HPAGE_PMD_NR ) order = HPAGE_PMD_ORDER ; } # endif if ( page_count ( pages [ i ] ) != 1 ) pr_err ( \"Erroneous<S2SV_blank>page<S2SV_blank>count.<S2SV_blank>Leaking<S2SV_blank>pages.\\\\n\" ) ; __free_pages ( pages [ i ] , order ) ; j = 1 << order ; while ( j ) { pages [ i ++ ] = NULL ; -- j ; } } return ; } i = 0 ; # ifdef CONFIG_TRANSPARENT_HUGEPAGE if ( huge ) { unsigned max_size , n2free ; spin_lock_irqsave ( & huge -> lock , irq_flags ) ; while ( ( npages - i ) >= HPAGE_PMD_NR ) { struct page * p = pages [ i ] ; unsigned j ; if ( ! p ) break ; <S2SV_StartBug> for ( j = 0 ; j < HPAGE_PMD_NR ; ++ j ) <S2SV_EndBug> if ( p ++ != pages [ i + j ] ) break ; if ( j != HPAGE_PMD_NR ) break ; list_add_tail ( & pages [ i ] -> lru , & huge -> list ) ; for ( j = 0 ; j < HPAGE_PMD_NR ; ++ j ) pages [ i ++ ] = NULL ; huge -> npages ++ ; } max_size = _manager -> options . max_size ; max_size /= HPAGE_PMD_NR ; if ( huge -> npages > max_size ) n2free = huge -> npages - max_size ; else n2free = 0 ; spin_unlock_irqrestore ( & huge -> lock , irq_flags ) ; if ( n2free ) ttm_page_pool_free ( huge , n2free , false ) ; } # endif spin_lock_irqsave ( & pool -> lock , irq_flags ) ; while ( i < npages ) { if ( pages [ i ] ) { if ( page_count ( pages [ i ] ) != 1 ) pr_err ( \"Erroneous<S2SV_blank>page<S2SV_blank>count.<S2SV_blank>Leaking<S2SV_blank>pages.\\\\n\" ) ; list_add_tail ( & pages [ i ] -> lru , & pool -> list ) ; pages [ i ] = NULL ; pool -> npages ++ ; } ++ i ; } npages = 0 ; if ( pool -> npages > _manager -> options . max_size ) { npages = pool -> npages - _manager -> options . max_size ; if ( npages < NUM_PAGES_TO_ALLOC ) npages = NUM_PAGES_TO_ALLOC ; } spin_unlock_irqrestore ( & pool -> lock , irq_flags ) ; if ( npages ) ttm_page_pool_free ( pool , npages , false ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( j = 1 <S2SV_ModEnd> ; j < <S2SV_ModStart> ( j = 1 <S2SV_ModEnd> ; j <\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int l2tp_ip_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; size_t copied = 0 ; int err = - EOPNOTSUPP ; struct sockaddr_in * sin = ( struct sockaddr_in * ) msg -> msg_name ; struct sk_buff * skb ; if ( flags & MSG_OOB ) <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( * sin ) ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_timestamp ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; sin -> sin_port = 0 ; memset ( & sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; if ( flags & MSG_TRUNC ) copied = skb -> len ; done : skb_free_datagram ( sk , skb ) ; out : return err ? err : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto out <S2SV_ModEnd> ; skb = <S2SV_ModStart> ) ) ; * addr_len = sizeof ( * sin ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void reset_fpf_position ( struct twopass_rc * p , <S2SV_EndBug> const FIRSTPASS_STATS * position ) { p -> stats_in = position ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void reset_fpf_position ( TWO_PASS <S2SV_ModEnd> * p ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static bool check_underflow ( const struct ip6t_entry * e ) { const struct xt_entry_target * t ; unsigned int verdict ; <S2SV_StartBug> if ( ! unconditional ( & e -> ipv6 ) ) <S2SV_EndBug> return false ; t = ip6t_get_target_c ( e ) ; if ( strcmp ( t -> u . user . name , XT_STANDARD_TARGET ) != 0 ) return false ; verdict = ( ( struct xt_standard_target * ) t ) -> verdict ; verdict = - verdict - 1 ; return verdict == NF_DROP || verdict == NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! unconditional ( e <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9278\n\n```\nCWE-787 void exif_data_load_data ( ExifData * data , const unsigned char * d_orig , unsigned int ds ) { unsigned int l ; ExifLong offset ; ExifShort n ; const unsigned char * d = d_orig ; unsigned int len , fullds ; if ( ! data || ! data -> priv || ! d || ! ds ) return ; exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Parsing<S2SV_blank>%i<S2SV_blank>byte(s)<S2SV_blank>EXIF<S2SV_blank>data...\\\\n\" , ds ) ; if ( ds < 6 ) { LOG_TOO_SMALL ; return ; } if ( ! memcmp ( d , ExifHeader , 6 ) ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Found<S2SV_blank>EXIF<S2SV_blank>header<S2SV_blank>at<S2SV_blank>start.\" ) ; } else { while ( ds >= 3 ) { while ( ds && ( d [ 0 ] == 0xff ) ) { d ++ ; ds -- ; } if ( ds && d [ 0 ] == JPEG_MARKER_SOI ) { d ++ ; ds -- ; continue ; } if ( ds && d [ 0 ] == JPEG_MARKER_APP1 ) break ; if ( ds >= 3 && d [ 0 ] >= 0xe0 && d [ 0 ] <= 0xef ) { d ++ ; ds -- ; l = ( d [ 0 ] << 8 ) | d [ 1 ] ; if ( l > ds ) return ; d += l ; ds -= l ; continue ; } exif_log ( data -> priv -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifData\" , _ ( \"EXIF<S2SV_blank>marker<S2SV_blank>not<S2SV_blank>found.\" ) ) ; return ; } if ( ds < 3 ) { LOG_TOO_SMALL ; return ; } d ++ ; ds -- ; len = ( d [ 0 ] << 8 ) | d [ 1 ] ; exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"We<S2SV_blank>have<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%i<S2SV_blank>byte(s)<S2SV_blank>of<S2SV_blank>EXIF<S2SV_blank>data.\" , len ) ; d += 2 ; ds -= 2 ; } if ( ds < 6 ) { LOG_TOO_SMALL ; return ; } if ( memcmp ( d , ExifHeader , 6 ) ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifData\" , _ ( \"EXIF<S2SV_blank>header<S2SV_blank>not<S2SV_blank>found.\" ) ) ; return ; } exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Found<S2SV_blank>EXIF<S2SV_blank>header.\" ) ; if ( ds < 14 ) return ; fullds = ds ; if ( ds > 0xfffe ) ds = 0xfffe ; if ( ! memcmp ( d + 6 , \"II\" , 2 ) ) data -> priv -> order = EXIF_BYTE_ORDER_INTEL ; else if ( ! memcmp ( d + 6 , \"MM\" , 2 ) ) data -> priv -> order = EXIF_BYTE_ORDER_MOTOROLA ; else { exif_log ( data -> priv -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifData\" , _ ( \"Unknown<S2SV_blank>encoding.\" ) ) ; return ; } if ( exif_get_short ( d + 8 , data -> priv -> order ) != 0x002a ) return ; offset = exif_get_long ( d + 10 , data -> priv -> order ) ; exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"IFD<S2SV_blank>0<S2SV_blank>at<S2SV_blank>%i.\" , ( int ) offset ) ; if ( offset > ds || offset + 6 + 2 > ds ) return ; exif_data_load_data_content ( data , EXIF_IFD_0 , d + 6 , ds - 6 , offset , 0 ) ; n = exif_get_short ( d + 6 + offset , data -> priv -> order ) ; if ( offset + 6 + 2 + 12 * n + 4 > ds ) return ; offset = exif_get_long ( d + 6 + offset + 2 + 12 * n , data -> priv -> order ) ; if ( offset ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"IFD<S2SV_blank>1<S2SV_blank>at<S2SV_blank>%i.\" , ( int ) offset ) ; <S2SV_StartBug> if ( offset > ds || offset + 6 > ds ) { <S2SV_EndBug> exif_log ( data -> priv -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifData\" , \"Bogus<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>IFD1.\" ) ; } else { exif_data_load_data_content ( data , EXIF_IFD_1 , d + 6 , ds - 6 , offset , 0 ) ; } } interpret_maker_note ( data , d , fullds ) ; if ( data -> priv -> options & EXIF_DATA_OPTION_FOLLOW_SPECIFICATION ) exif_data_fix ( data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> offset > ds - 6 <S2SV_ModEnd> ) { exif_log\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 struct ipv6_txoptions * ipv6_renew_options ( struct sock * sk , struct ipv6_txoptions * opt , int newtype , struct ipv6_opt_hdr __user * newopt , int newoptlen ) { int tot_len = 0 ; char * p ; struct ipv6_txoptions * opt2 ; int err ; if ( opt ) { if ( newtype != IPV6_HOPOPTS && opt -> hopopt ) tot_len += CMSG_ALIGN ( ipv6_optlen ( opt -> hopopt ) ) ; if ( newtype != IPV6_RTHDRDSTOPTS && opt -> dst0opt ) tot_len += CMSG_ALIGN ( ipv6_optlen ( opt -> dst0opt ) ) ; if ( newtype != IPV6_RTHDR && opt -> srcrt ) tot_len += CMSG_ALIGN ( ipv6_optlen ( opt -> srcrt ) ) ; if ( newtype != IPV6_DSTOPTS && opt -> dst1opt ) tot_len += CMSG_ALIGN ( ipv6_optlen ( opt -> dst1opt ) ) ; } if ( newopt && newoptlen ) tot_len += CMSG_ALIGN ( newoptlen ) ; if ( ! tot_len ) return NULL ; tot_len += sizeof ( * opt2 ) ; opt2 = sock_kmalloc ( sk , tot_len , GFP_ATOMIC ) ; if ( ! opt2 ) return ERR_PTR ( - ENOBUFS ) ; memset ( opt2 , 0 , tot_len ) ; <S2SV_StartBug> opt2 -> tot_len = tot_len ; <S2SV_EndBug> p = ( char * ) ( opt2 + 1 ) ; err = ipv6_renew_option ( opt ? opt -> hopopt : NULL , newopt , newoptlen , newtype != IPV6_HOPOPTS , & opt2 -> hopopt , & p ) ; if ( err ) goto out ; err = ipv6_renew_option ( opt ? opt -> dst0opt : NULL , newopt , newoptlen , newtype != IPV6_RTHDRDSTOPTS , & opt2 -> dst0opt , & p ) ; if ( err ) goto out ; err = ipv6_renew_option ( opt ? opt -> srcrt : NULL , newopt , newoptlen , newtype != IPV6_RTHDR , ( struct ipv6_opt_hdr * * ) & opt2 -> srcrt , & p ) ; if ( err ) goto out ; err = ipv6_renew_option ( opt ? opt -> dst1opt : NULL , newopt , newoptlen , newtype != IPV6_DSTOPTS , & opt2 -> dst1opt , & p ) ; if ( err ) goto out ; opt2 -> opt_nflen = ( opt2 -> hopopt ? ipv6_optlen ( opt2 -> hopopt ) : 0 ) + ( opt2 -> dst0opt ? ipv6_optlen ( opt2 -> dst0opt ) : 0 ) + ( opt2 -> srcrt ? ipv6_optlen ( opt2 -> srcrt ) : 0 ) ; opt2 -> opt_flen = ( opt2 -> dst1opt ? ipv6_optlen ( opt2 -> dst1opt ) : 0 ) ; return opt2 ; out : sock_kfree_s ( sk , opt2 , opt2 -> tot_len ) ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tot_len ) ; atomic_set ( & opt2 -> refcnt , 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11089\n\n```\nCWE-125 static wStream * rdg_receive_packet ( rdpRdg * rdg ) { wStream * s ; const size_t header = sizeof ( RdgPacketHeader ) ; size_t packetLength ; assert ( header <= INT_MAX ) ; s = Stream_New ( NULL , 1024 ) ; if ( ! s ) return NULL ; if ( ! rdg_read_all ( rdg -> tlsOut , Stream_Buffer ( s ) , header ) ) { Stream_Free ( s , TRUE ) ; return NULL ; } Stream_Seek ( s , 4 ) ; Stream_Read_UINT32 ( s , packetLength ) ; <S2SV_StartBug> if ( ( packetLength > INT_MAX ) || ! Stream_EnsureCapacity ( s , packetLength ) ) <S2SV_EndBug> { Stream_Free ( s , TRUE ) ; return NULL ; } if ( ! rdg_read_all ( rdg -> tlsOut , Stream_Buffer ( s ) + header , ( int ) packetLength - ( int ) header ) ) { Stream_Free ( s , TRUE ) ; return NULL ; } Stream_SetLength ( s , packetLength ) ; return s ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , packetLength ) || ( packetLength < header )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1479\n\n```\nCWE-399 <S2SV_StartBug> static struct fsnotify_group * inotify_new_group ( struct user_struct * user , unsigned int max_events ) <S2SV_EndBug> { struct fsnotify_group * group ; group = fsnotify_alloc_group ( & inotify_fsnotify_ops ) ; if ( IS_ERR ( group ) ) return group ; group -> max_events = max_events ; spin_lock_init ( & group -> inotify_data . idr_lock ) ; idr_init ( & group -> inotify_data . idr ) ; group -> inotify_data . last_wd = 0 ; <S2SV_StartBug> group -> inotify_data . user = user ; <S2SV_EndBug> <S2SV_StartBug> group -> inotify_data . fa = NULL ; <S2SV_EndBug> return group ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * inotify_new_group ( <S2SV_ModEnd> unsigned int max_events <S2SV_ModStart> -> inotify_data . fa = NULL <S2SV_ModEnd> ; group -> <S2SV_ModStart> -> inotify_data . user = get_current_user ( ) ; if ( atomic_inc_return ( & group -> inotify_data . user -> inotify_devs ) > inotify_max_user_instances ) { fsnotify_put_group ( group ) ; return ERR_PTR ( - EMFILE ) ; } <S2SV_ModEnd> return group ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5077\n\n```\nCWE-476 void sctp_assoc_update ( struct sctp_association * asoc , struct sctp_association * new ) { struct sctp_transport * trans ; struct list_head * pos , * temp ; asoc -> c = new -> c ; asoc -> peer . rwnd = new -> peer . rwnd ; asoc -> peer . sack_needed = new -> peer . sack_needed ; <S2SV_StartBug> asoc -> peer . i = new -> peer . i ; <S2SV_EndBug> sctp_tsnmap_init ( & asoc -> peer . tsn_map , SCTP_TSN_MAP_INITIAL , asoc -> peer . i . initial_tsn , GFP_ATOMIC ) ; list_for_each_safe ( pos , temp , & asoc -> peer . transport_addr_list ) { trans = list_entry ( pos , struct sctp_transport , transports ) ; if ( ! sctp_assoc_lookup_paddr ( new , & trans -> ipaddr ) ) { sctp_assoc_rm_peer ( asoc , trans ) ; continue ; } if ( asoc -> state >= SCTP_STATE_ESTABLISHED ) sctp_transport_reset ( trans ) ; } if ( asoc -> state >= SCTP_STATE_ESTABLISHED ) { asoc -> next_tsn = new -> next_tsn ; asoc -> ctsn_ack_point = new -> ctsn_ack_point ; asoc -> adv_peer_ack_point = new -> adv_peer_ack_point ; sctp_ssnmap_clear ( asoc -> ssnmap ) ; sctp_ulpq_flush ( & asoc -> ulpq ) ; asoc -> overall_error_count = 0 ; } else { list_for_each_entry ( trans , & new -> peer . transport_addr_list , transports ) { if ( ! sctp_assoc_lookup_paddr ( asoc , & trans -> ipaddr ) ) sctp_assoc_add_peer ( asoc , & trans -> ipaddr , GFP_ATOMIC , trans -> state ) ; } asoc -> ctsn_ack_point = asoc -> next_tsn - 1 ; asoc -> adv_peer_ack_point = asoc -> ctsn_ack_point ; if ( ! asoc -> ssnmap ) { asoc -> ssnmap = new -> ssnmap ; new -> ssnmap = NULL ; } if ( ! asoc -> assoc_id ) { sctp_assoc_set_id ( asoc , GFP_ATOMIC ) ; } } kfree ( asoc -> peer . peer_random ) ; asoc -> peer . peer_random = new -> peer . peer_random ; new -> peer . peer_random = NULL ; kfree ( asoc -> peer . peer_chunks ) ; asoc -> peer . peer_chunks = new -> peer . peer_chunks ; new -> peer . peer_chunks = NULL ; kfree ( asoc -> peer . peer_hmacs ) ; asoc -> peer . peer_hmacs = new -> peer . peer_hmacs ; new -> peer . peer_hmacs = NULL ; sctp_auth_key_put ( asoc -> asoc_shared_key ) ; sctp_auth_asoc_init_active_key ( asoc , GFP_ATOMIC ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> peer . auth_capable = new -> peer . auth_capable ; asoc -> peer .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void l2tp_q931_cc_print ( netdissect_options * ndo , const u_char * dat , u_int length ) <S2SV_StartBug> { <S2SV_EndBug> print_16bits_val ( ndo , ( const uint16_t * ) dat ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%02x\" , dat [ 2 ] ) ) ; <S2SV_StartBug> if ( length > 3 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; <S2SV_StartBug> print_string ( ndo , dat + 3 , length - 3 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length ) { if ( length < 3 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; } <S2SV_ModStart> ) ) ; dat += 3 ; length -= 3 ; <S2SV_ModStart> if ( length != 0 <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> ndo , dat , length <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11368\n\n```\nCWE-617 static krb5_error_code kdc_process_s4u_x509_user ( krb5_context context , krb5_kdc_req * request , krb5_pa_data * pa_data , krb5_keyblock * tgs_subkey , krb5_keyblock * tgs_session , krb5_pa_s4u_x509_user * * s4u_x509_user , const char * * status ) { krb5_error_code code ; krb5_data req_data ; req_data . length = pa_data -> length ; req_data . data = ( char * ) pa_data -> contents ; code = decode_krb5_pa_s4u_x509_user ( & req_data , s4u_x509_user ) ; if ( code ) <S2SV_StartBug> return code ; <S2SV_EndBug> code = verify_s4u_x509_user_checksum ( context , tgs_subkey ? tgs_subkey : tgs_session , & req_data , request -> nonce , * s4u_x509_user ) ; if ( code ) { * status = \"INVALID_S4U2SELF_CHECKSUM\" ; krb5_free_pa_s4u_x509_user ( context , * s4u_x509_user ) ; * s4u_x509_user = NULL ; return code ; } if ( krb5_princ_size ( context , ( * s4u_x509_user ) -> user_id . user ) == 0 || ( * s4u_x509_user ) -> user_id . subject_cert . length != 0 ) { * status = \"INVALID_S4U2SELF_REQUEST\" ; krb5_free_pa_s4u_x509_user ( context , * s4u_x509_user ) ; * s4u_x509_user = NULL ; return KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( code ) { * status = \"DECODE_PA_S4U_X509_USER\" ; return code ; } <S2SV_ModEnd> code = verify_s4u_x509_user_checksum\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8825\n\n```\nCWE-476 static int mailimf_group_parse ( const char * message , size_t length , size_t * indx , struct mailimf_group * * result ) { size_t cur_token ; char * display_name ; struct mailimf_mailbox_list * mailbox_list ; struct mailimf_group * group ; int r ; int res ; <S2SV_StartBug> cur_token = * indx ; <S2SV_EndBug> mailbox_list = NULL ; r = mailimf_display_name_parse ( message , length , & cur_token , & display_name ) ; if ( r != MAILIMF_NO_ERROR ) { res = r ; goto err ; } r = mailimf_colon_parse ( message , length , & cur_token ) ; if ( r != MAILIMF_NO_ERROR ) { res = r ; goto free_display_name ; } r = mailimf_mailbox_list_parse ( message , length , & cur_token , & mailbox_list ) ; switch ( r ) { case MAILIMF_NO_ERROR : break ; case MAILIMF_ERROR_PARSE : r = mailimf_cfws_parse ( message , length , & cur_token ) ; if ( ( r != MAILIMF_NO_ERROR ) && ( r != MAILIMF_ERROR_PARSE ) ) { <S2SV_StartBug> res = r ; <S2SV_EndBug> goto free_display_name ; } break ; default : res = r ; goto free_display_name ; } r = mailimf_semi_colon_parse ( message , length , & cur_token ) ; if ( r != MAILIMF_NO_ERROR ) { res = r ; goto free_mailbox_list ; } group = mailimf_group_new ( display_name , mailbox_list ) ; if ( group == NULL ) { res = MAILIMF_ERROR_MEMORY ; goto free_mailbox_list ; } * indx = cur_token ; * result = group ; return MAILIMF_NO_ERROR ; free_mailbox_list : if ( mailbox_list != NULL ) { mailimf_mailbox_list_free ( mailbox_list ) ; } free_display_name : mailimf_display_name_free ( display_name ) ; err : return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int res ; clist * list ; <S2SV_ModStart> res = r ; goto free_display_name ; } list = clist_new ( ) ; if ( list == NULL ) { res = MAILIMF_ERROR_MEMORY ; goto free_display_name ; } mailbox_list = mailimf_mailbox_list_new ( list ) ; if ( mailbox_list == NULL ) { res = MAILIMF_ERROR_MEMORY ; clist_free ( list )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4127\n\n```\nCWE-399 static void vhost_net_ubuf_put_and_wait ( struct vhost_net_ubuf_ref * ubufs ) { kref_put ( & ubufs -> kref , vhost_net_zerocopy_done_signal ) ; wait_event ( ubufs -> wait , ! atomic_read ( & ubufs -> kref . refcount ) ) ; <S2SV_StartBug> kfree ( ubufs ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void fdct16_sse2 ( __m128i * in0 , __m128i * in1 ) { <S2SV_EndBug> fdct16_8col ( in0 ) ; fdct16_8col ( in1 ) ; array_transpose_16x16 ( in0 , in1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-755(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11472\n\n```\nCWE-755 void acpi_ns_terminate ( void ) { acpi_status status ; <S2SV_StartBug> ACPI_FUNCTION_TRACE ( ns_terminate ) ; <S2SV_EndBug> # ifdef ACPI_EXEC_APP { union acpi_operand_object * prev ; <S2SV_StartBug> union acpi_operand_object * next ; <S2SV_EndBug> next = acpi_gbl_module_code_list ; while ( next ) { prev = next ; next = next -> method . mutex ; prev -> method . mutex = NULL ; acpi_ut_remove_reference ( prev ) ; } <S2SV_StartBug> } <S2SV_EndBug> # endif acpi_ns_delete_namespace_subtree ( acpi_gbl_root_node ) ; status = acpi_ut_acquire_mutex ( ACPI_MTX_NAMESPACE ) ; if ( ACPI_FAILURE ( status ) ) { return_VOID ; } acpi_ns_delete_node ( acpi_gbl_root_node ) ; ( void ) acpi_ut_release_mutex ( ACPI_MTX_NAMESPACE ) ; ACPI_DEBUG_PRINT ( ( ACPI_DB_INFO , \"Namespace<S2SV_blank>freed\\\\n\" ) ) ; return_VOID ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> acpi_status status ; <S2SV_ModEnd> union acpi_operand_object * <S2SV_ModStart> acpi_operand_object * next ; ACPI_FUNCTION_TRACE ( ns_terminate ) <S2SV_ModStart> ) ; } <S2SV_ModEnd> acpi_ns_delete_namespace_subtree ( acpi_gbl_root_node\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9537\n\n```\nCWE-119 int TIFFFlushData1 ( TIFF * tif ) { if ( tif -> tif_rawcc > 0 && tif -> tif_flags & TIFF_BUF4WRITE ) { if ( ! isFillOrder ( tif , tif -> tif_dir . td_fillorder ) && ( tif -> tif_flags & TIFF_NOBITREV ) == 0 ) TIFFReverseBits ( ( uint8 * ) tif -> tif_rawdata , tif -> tif_rawcc ) ; if ( ! TIFFAppendToStrip ( tif , isTiled ( tif ) ? tif -> tif_curtile : tif -> tif_curstrip , tif -> tif_rawdata , tif -> tif_rawcc ) ) <S2SV_StartBug> return ( 0 ) ; <S2SV_EndBug> tif -> tif_rawcc = 0 ; tif -> tif_rawcp = tif -> tif_rawdata ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tif_rawcc ) ) { tif -> tif_rawcc = 0 ; tif -> tif_rawcp = tif -> tif_rawdata ; <S2SV_ModStart> 0 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t encoder_destroy ( vpx_codec_alg_priv_t * ctx ) { free ( ctx -> cx_data ) ; vp9_remove_compressor ( ctx -> cpi ) ; <S2SV_StartBug> free ( ctx ) ; <S2SV_EndBug> return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi ) ; # if CONFIG_MULTITHREAD pthread_mutex_destroy ( & ctx -> buffer_pool -> pool_mutex ) ; # endif vpx_free ( ctx -> buffer_pool ) ; vpx_free <S2SV_ModEnd> ( ctx )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14497\n\n```\nCWE-119 static int tpacket_rcv ( struct sk_buff * skb , struct net_device * dev , struct packet_type * pt , struct net_device * orig_dev ) { struct sock * sk ; struct packet_sock * po ; struct sockaddr_ll * sll ; union tpacket_uhdr h ; u8 * skb_head = skb -> data ; int skb_len = skb -> len ; unsigned int snaplen , res ; unsigned long status = TP_STATUS_USER ; unsigned short macoff , netoff , hdrlen ; struct sk_buff * copy_skb = NULL ; struct timespec ts ; __u32 ts_status ; <S2SV_StartBug> bool is_drop_n_account = false ; <S2SV_EndBug> BUILD_BUG_ON ( TPACKET_ALIGN ( sizeof ( * h . h2 ) ) != 32 ) ; BUILD_BUG_ON ( TPACKET_ALIGN ( sizeof ( * h . h3 ) ) != 48 ) ; if ( skb -> pkt_type == PACKET_LOOPBACK ) goto drop ; sk = pt -> af_packet_priv ; po = pkt_sk ( sk ) ; if ( ! net_eq ( dev_net ( dev ) , sock_net ( sk ) ) ) goto drop ; if ( dev -> header_ops ) { if ( sk -> sk_type != SOCK_DGRAM ) skb_push ( skb , skb -> data - skb_mac_header ( skb ) ) ; else if ( skb -> pkt_type == PACKET_OUTGOING ) { skb_pull ( skb , skb_network_offset ( skb ) ) ; } } snaplen = skb -> len ; res = run_filter ( skb , sk , snaplen ) ; if ( ! res ) goto drop_n_restore ; if ( skb -> ip_summed == CHECKSUM_PARTIAL ) status |= TP_STATUS_CSUMNOTREADY ; else if ( skb -> pkt_type != PACKET_OUTGOING && ( skb -> ip_summed == CHECKSUM_COMPLETE || skb_csum_unnecessary ( skb ) ) ) status |= TP_STATUS_CSUM_VALID ; if ( snaplen > res ) snaplen = res ; if ( sk -> sk_type == SOCK_DGRAM ) { macoff = netoff = TPACKET_ALIGN ( po -> tp_hdrlen ) + 16 + po -> tp_reserve ; } else { unsigned int maclen = skb_network_offset ( skb ) ; netoff = TPACKET_ALIGN ( po -> tp_hdrlen + ( maclen < 16 ? 16 : maclen ) ) + po -> tp_reserve ; <S2SV_StartBug> if ( po -> has_vnet_hdr ) <S2SV_EndBug> netoff += sizeof ( struct virtio_net_hdr ) ; <S2SV_StartBug> macoff = netoff - maclen ; <S2SV_EndBug> } if ( po -> tp_version <= TPACKET_V2 ) { if ( macoff + snaplen > po -> rx_ring . frame_size ) { if ( po -> copy_thresh && atomic_read ( & sk -> sk_rmem_alloc ) < sk -> sk_rcvbuf ) { if ( skb_shared ( skb ) ) { copy_skb = skb_clone ( skb , GFP_ATOMIC ) ; } else { copy_skb = skb_get ( skb ) ; skb_head = skb -> data ; } if ( copy_skb ) skb_set_owner_r ( copy_skb , sk ) ; } snaplen = po -> rx_ring . frame_size - macoff ; <S2SV_StartBug> if ( ( int ) snaplen < 0 ) <S2SV_EndBug> <S2SV_StartBug> snaplen = 0 ; <S2SV_EndBug> } } else if ( unlikely ( macoff + snaplen > GET_PBDQC_FROM_RB ( & po -> rx_ring ) -> max_frame_len ) ) { u32 nval ; nval = GET_PBDQC_FROM_RB ( & po -> rx_ring ) -> max_frame_len - macoff ; pr_err_once ( \"tpacket_rcv:<S2SV_blank>packet<S2SV_blank>too<S2SV_blank>big,<S2SV_blank>clamped<S2SV_blank>from<S2SV_blank>%u<S2SV_blank>to<S2SV_blank>%u.<S2SV_blank>macoff=%u\\\\n\" , snaplen , nval , macoff ) ; snaplen = nval ; if ( unlikely ( ( int ) snaplen < 0 ) ) { snaplen = 0 ; macoff = GET_PBDQC_FROM_RB ( & po -> rx_ring ) -> max_frame_len ; <S2SV_StartBug> } <S2SV_EndBug> } spin_lock ( & sk -> sk_receive_queue . lock ) ; h . raw = packet_current_rx_frame ( po , skb , TP_STATUS_KERNEL , ( macoff + snaplen ) ) ; if ( ! h . raw ) goto drop_n_account ; if ( po -> tp_version <= TPACKET_V2 ) { packet_increment_rx_head ( po , & po -> rx_ring ) ; if ( po -> stats . stats1 . tp_drops ) status |= TP_STATUS_LOSING ; } po -> stats . stats1 . tp_packets ++ ; if ( copy_skb ) { status |= TP_STATUS_COPY ; __skb_queue_tail ( & sk -> sk_receive_queue , copy_skb ) ; } spin_unlock ( & sk -> sk_receive_queue . lock ) ; <S2SV_StartBug> if ( po -> has_vnet_hdr ) { <S2SV_EndBug> if ( virtio_net_hdr_from_skb ( skb , h . raw + macoff - sizeof ( struct virtio_net_hdr ) , vio_le ( ) , true ) ) { spin_lock ( & sk -> sk_receive_queue . lock ) ; goto drop_n_account ; } } skb_copy_bits ( skb , 0 , h . raw + macoff , snaplen ) ; if ( ! ( ts_status = tpacket_get_timestamp ( skb , & ts , po -> tp_tstamp ) ) ) getnstimeofday ( & ts ) ; status |= ts_status ; switch ( po -> tp_version ) { case TPACKET_V1 : h . h1 -> tp_len = skb -> len ; h . h1 -> tp_snaplen = snaplen ; h . h1 -> tp_mac = macoff ; h . h1 -> tp_net = netoff ; h . h1 -> tp_sec = ts . tv_sec ; h . h1 -> tp_usec = ts . tv_nsec / NSEC_PER_USEC ; hdrlen = sizeof ( * h . h1 ) ; break ; case TPACKET_V2 : h . h2 -> tp_len = skb -> len ; h . h2 -> tp_snaplen = snaplen ; h . h2 -> tp_mac = macoff ; h . h2 -> tp_net = netoff ; h . h2 -> tp_sec = ts . tv_sec ; h . h2 -> tp_nsec = ts . tv_nsec ; if ( skb_vlan_tag_present ( skb ) ) { h . h2 -> tp_vlan_tci = skb_vlan_tag_get ( skb ) ; h . h2 -> tp_vlan_tpid = ntohs ( skb -> vlan_proto ) ; status |= TP_STATUS_VLAN_VALID | TP_STATUS_VLAN_TPID_VALID ; } else { h . h2 -> tp_vlan_tci = 0 ; h . h2 -> tp_vlan_tpid = 0 ; } memset ( h . h2 -> tp_padding , 0 , sizeof ( h . h2 -> tp_padding ) ) ; hdrlen = sizeof ( * h . h2 ) ; break ; case TPACKET_V3 : h . h3 -> tp_status |= status ; h . h3 -> tp_len = skb -> len ; h . h3 -> tp_snaplen = snaplen ; h . h3 -> tp_mac = macoff ; h . h3 -> tp_net = netoff ; h . h3 -> tp_sec = ts . tv_sec ; h . h3 -> tp_nsec = ts . tv_nsec ; memset ( h . h3 -> tp_padding , 0 , sizeof ( h . h3 -> tp_padding ) ) ; hdrlen = sizeof ( * h . h3 ) ; break ; default : BUG ( ) ; } sll = h . raw + TPACKET_ALIGN ( hdrlen ) ; sll -> sll_halen = dev_parse_header ( skb , sll -> sll_addr ) ; sll -> sll_family = AF_PACKET ; sll -> sll_hatype = dev -> type ; sll -> sll_protocol = skb -> protocol ; sll -> sll_pkttype = skb -> pkt_type ; if ( unlikely ( po -> origdev ) ) sll -> sll_ifindex = orig_dev -> ifindex ; else sll -> sll_ifindex = dev -> ifindex ; smp_mb ( ) ; # if ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE == 1 if ( po -> tp_version <= TPACKET_V2 ) { u8 * start , * end ; end = ( u8 * ) PAGE_ALIGN ( ( unsigned long ) h . raw + macoff + snaplen ) ; for ( start = h . raw ; start < end ; start += PAGE_SIZE ) flush_dcache_page ( pgv_to_page ( start ) ) ; } smp_wmb ( ) ; # endif if ( po -> tp_version <= TPACKET_V2 ) { __packet_set_status ( po , h . raw , status ) ; sk -> sk_data_ready ( sk ) ; } else { prb_clear_blk_fill_status ( & po -> rx_ring ) ; } drop_n_restore : if ( skb_head != skb -> data && skb_shared ( skb ) ) { skb -> data = skb_head ; skb -> len = skb_len ; } drop : if ( ! is_drop_n_account ) consume_skb ( skb ) ; else kfree_skb ( skb ) ; return 0 ; drop_n_account : is_drop_n_account = true ; po -> stats . stats1 . tp_drops ++ ; spin_unlock ( & sk -> sk_receive_queue . lock ) ; sk -> sk_data_ready ( sk ) ; kfree_skb ( copy_skb ) ; goto drop_n_restore ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bool is_drop_n_account = false ; bool do_vnet <S2SV_ModStart> -> has_vnet_hdr ) { <S2SV_ModStart> virtio_net_hdr ) ; do_vnet = true ; } <S2SV_ModStart> < 0 ) { <S2SV_ModStart> = 0 ; do_vnet = false ; } <S2SV_ModStart> -> max_frame_len ; do_vnet = false ; <S2SV_ModStart> ; if ( do_vnet <S2SV_ModEnd> ) { if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-426(不受信任的搜索路径)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3887\n\n```\nCWE-426 static void set_own_dir ( const char * argv0 ) { size_t l = strlen ( argv0 ) ; while ( l && argv0 [ l - 1 ] != '/' ) l -- ; if ( l == 0 ) <S2SV_StartBug> memcpy ( own_dir , \".\" , 2 ) ; <S2SV_EndBug> else { memcpy ( own_dir , argv0 , l - 1 ) ; own_dir [ l ] = 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) # ifdef SUPER_SECURE memcpy ( own_dir , \"/dev/null/\" , 2 ) ; # else <S2SV_ModStart> 2 ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 arg_ty <S2SV_StartBug> arg ( identifier arg , expr_ty annotation , int lineno , int col_offset , int <S2SV_EndBug> end_lineno , int end_col_offset , PyArena * arena ) { arg_ty p ; if ( ! arg ) { PyErr_SetString ( PyExc_ValueError , \"field<S2SV_blank>arg<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>arg\" ) ; return NULL ; } p = ( arg_ty ) PyArena_Malloc ( arena , sizeof ( * p ) ) ; if ( ! p ) return NULL ; p -> arg = arg ; p -> annotation = annotation ; <S2SV_StartBug> p -> lineno = lineno ; <S2SV_EndBug> p -> col_offset = col_offset ; p -> end_lineno = end_lineno ; p -> end_col_offset = end_col_offset ; return p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> expr_ty annotation , string type_comment , <S2SV_ModStart> ; p -> type_comment = type_comment ; p ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static int can_open_delegated ( struct nfs_delegation * delegation , mode_t open_flags ) <S2SV_EndBug> { <S2SV_StartBug> if ( ( delegation -> type & open_flags ) != open_flags ) <S2SV_EndBug> return 0 ; if ( test_bit ( NFS_DELEGATION_NEED_RECLAIM , & delegation -> flags ) ) return 0 ; nfs_mark_delegation_referenced ( delegation ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * delegation , fmode_t fmode <S2SV_ModEnd> ) { if <S2SV_ModStart> -> type & fmode ) != fmode <S2SV_ModEnd> ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int em_jmp_far ( struct x86_emulate_ctxt * ctxt ) { int rc ; <S2SV_StartBug> unsigned short sel ; <S2SV_EndBug> memcpy ( & sel , ctxt -> src . valptr + ctxt -> op_bytes , 2 ) ; <S2SV_StartBug> rc = load_segment_descriptor ( ctxt , sel , VCPU_SREG_CS ) ; <S2SV_EndBug> if ( rc != X86EMUL_CONTINUE ) return rc ; <S2SV_StartBug> ctxt -> _eip = 0 ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & ctxt -> _eip , ctxt -> src . valptr , ctxt -> op_bytes ) ; <S2SV_EndBug> <S2SV_StartBug> return X86EMUL_CONTINUE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned short sel , old_sel ; struct desc_struct old_desc , new_desc ; const struct x86_emulate_ops * ops = ctxt -> ops ; u8 cpl = ctxt -> ops -> cpl ( ctxt ) ; if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) ops -> get_segment ( ctxt , & old_sel , & old_desc , NULL , VCPU_SREG_CS ) <S2SV_ModStart> ; rc = __load_segment_descriptor <S2SV_ModEnd> ( ctxt , <S2SV_ModStart> sel , VCPU_SREG_CS , cpl , false , & new_desc <S2SV_ModStart> return rc ; rc = assign_eip_far ( ctxt <S2SV_ModEnd> , ctxt -> <S2SV_ModStart> -> src . val , new_desc . l ) ; if ( rc != X86EMUL_CONTINUE ) { WARN_ON ( ! ctxt -> mode != X86EMUL_MODE_PROT64 ) ; ops -> set_segment ( ctxt , old_sel , & old_desc , 0 , VCPU_SREG_CS <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return rc ; } return rc <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8_get_frame_corrupted ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctrl_id , va_list args ) { int * corrupted = va_arg ( args , int * ) ; VP8D_COMP * pbi = ( VP8D_COMP * ) ctx -> yv12_frame_buffers . pbi [ 0 ] ; if ( corrupted && pbi ) { <S2SV_StartBug> * corrupted = pbi -> common . frame_to_show -> corrupted ; <S2SV_EndBug> return VPX_CODEC_OK ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args <S2SV_ModStart> pbi ) { const YV12_BUFFER_CONFIG * const frame <S2SV_ModEnd> = pbi -> <S2SV_ModStart> common . frame_to_show ; if ( frame == NULL ) return VPX_CODEC_ERROR ; * corrupted = frame\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13000\n\n```\nCWE-125 u_int ieee802_15_4_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , const u_char * p ) { u_int caplen = h -> caplen ; <S2SV_StartBug> int hdrlen ; <S2SV_EndBug> uint16_t fc ; uint8_t seq ; <S2SV_StartBug> if ( caplen < 3 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[|802.15.4]<S2SV_blank>%x\" , caplen ) ) ; return caplen ; } fc = EXTRACT_LE_16BITS ( p ) ; hdrlen = extract_header_length ( fc ) ; seq = EXTRACT_LE_8BITS ( p + 2 ) ; p += 3 ; caplen -= 3 ; ND_PRINT ( ( ndo , \"IEEE<S2SV_blank>802.15.4<S2SV_blank>%s<S2SV_blank>packet<S2SV_blank>\" , ftypes [ fc & 0x7 ] ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"seq<S2SV_blank>%02x<S2SV_blank>\" , seq ) ) ; if ( hdrlen == - 1 ) { ND_PRINT ( ( ndo , \"invalid!<S2SV_blank>\" ) ) ; return caplen ; } if ( ! ndo -> ndo_vflag ) { p += hdrlen ; caplen -= hdrlen ; } else { uint16_t panid = 0 ; <S2SV_StartBug> switch ( ( fc >> 10 ) & 0x3 ) { <S2SV_EndBug> case 0x00 : ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case 0x01 : ND_PRINT ( ( ndo , \"reserved<S2SV_blank>destination<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return 0 ; case 0x02 : panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p ) ) ) ; <S2SV_EndBug> p += 2 ; break ; <S2SV_StartBug> case 0x03 : <S2SV_EndBug> panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; <S2SV_EndBug> p += 8 ; <S2SV_StartBug> break ; <S2SV_EndBug> } <S2SV_StartBug> ND_PRINT ( ( ndo , \"<<S2SV_blank>\" ) ) ; <S2SV_EndBug> <S2SV_StartBug> switch ( ( fc >> 14 ) & 0x3 ) { <S2SV_EndBug> <S2SV_StartBug> case 0x00 : <S2SV_EndBug> ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; <S2SV_StartBug> case 0x01 : <S2SV_EndBug> ND_PRINT ( ( ndo , \"reserved<S2SV_blank>source<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return 0 ; <S2SV_StartBug> case 0x02 : <S2SV_EndBug> <S2SV_StartBug> if ( ! ( fc & ( 1 << 6 ) ) ) { <S2SV_EndBug> panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"%04x:%04x<S2SV_blank>\" , panid , EXTRACT_LE_16BITS ( p ) ) ) ; p += 2 ; <S2SV_StartBug> break ; <S2SV_EndBug> <S2SV_StartBug> case 0x03 : <S2SV_EndBug> <S2SV_StartBug> if ( ! ( fc & ( 1 << 6 ) ) ) { <S2SV_EndBug> panid = EXTRACT_LE_16BITS ( p ) ; p += 2 ; <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"%04x:%s<S2SV_blank>\" , panid , le64addr_string ( ndo , p ) ) ) ; p += 8 ; <S2SV_StartBug> break ; <S2SV_EndBug> } <S2SV_StartBug> caplen -= hdrlen ; <S2SV_EndBug> } if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , caplen ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> caplen ; u_int <S2SV_ModEnd> hdrlen ; uint16_t <S2SV_ModStart> uint8_t seq ; <S2SV_ModEnd> uint16_t panid = <S2SV_ModStart> = 0 ; if ( caplen < 3 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return caplen ; } hdrlen = 3 ; fc = EXTRACT_LE_16BITS ( p ) ; seq = EXTRACT_LE_8BITS ( p + 2 ) ; p += 3 ; caplen -= 3 ; ND_PRINT ( ( ndo , \"IEEE<S2SV_blank>802.15.4<S2SV_blank>%s<S2SV_blank>packet<S2SV_blank>\" , ftypes [ FC_FRAME_TYPE ( fc ) ] ) ) ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"seq<S2SV_blank>%02x<S2SV_blank>\" , seq ) ) ; switch ( FC_DEST_ADDRESSING_MODE ( fc ) ) { case FC_ADDRESSING_MODE_NONE : if ( fc & FC_PAN_ID_COMPRESSION ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"none<S2SV_blank>\" ) ) ; break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"reserved<S2SV_blank>destination<S2SV_blank>addressing<S2SV_blank>mode\" ) ) ; return hdrlen ; case FC_ADDRESSING_MODE_SHORT : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } <S2SV_ModEnd> panid = EXTRACT_LE_16BITS <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_ModStart> EXTRACT_LE_16BITS ( p + 2 ) ) ) ; p += 2 ; caplen -= 2 ; hdrlen <S2SV_ModEnd> += 2 ; <S2SV_ModStart> break ; case FC_ADDRESSING_MODE_LONG : if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } <S2SV_ModEnd> panid = EXTRACT_LE_16BITS <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_ModStart> ndo , p + 2 <S2SV_ModStart> += 8 ; caplen -= 8 ; hdrlen += 8 ; <S2SV_ModStart> break ; } if ( ndo -> ndo_vflag ) <S2SV_ModStart> ; switch ( FC_SRC_ADDRESSING_MODE ( fc ) <S2SV_ModEnd> ) { case <S2SV_ModStart> ) { case FC_ADDRESSING_MODE_NONE : if ( ndo -> ndo_vflag ) <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> break ; case FC_ADDRESSING_MODE_RESERVED : if ( ndo -> ndo_vflag ) <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> 0 ; case FC_ADDRESSING_MODE_SHORT <S2SV_ModEnd> : if ( <S2SV_ModStart> ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } <S2SV_ModEnd> panid = EXTRACT_LE_16BITS <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; <S2SV_ModStart> break ; case FC_ADDRESSING_MODE_LONG <S2SV_ModEnd> : if ( <S2SV_ModStart> ( fc & FC_PAN_ID_COMPRESSION ) ) { if ( caplen < 2 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } <S2SV_ModEnd> panid = EXTRACT_LE_16BITS <S2SV_ModStart> += 2 ; caplen -= 2 ; hdrlen += 2 ; } if ( caplen < 8 ) { ND_PRINT ( ( ndo , \"[|802.15.4]\" ) ) ; return hdrlen ; } if ( ndo -> ndo_vflag ) <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> += 8 ; caplen -= 8 ; hdrlen += 8 ; <S2SV_ModStart> break ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> ) ; return hdrlen <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6758\n\n```\nCWE-787 char * uwsgi_expand_path ( char * dir , int dir_len , char * ptr ) { <S2SV_StartBug> char src [ PATH_MAX + 1 ] ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( src , dir , dir_len ) ; <S2SV_EndBug> src [ dir_len ] = 0 ; char * dst = ptr ; if ( ! dst ) dst = uwsgi_malloc ( PATH_MAX + 1 ) ; if ( ! realpath ( src , dst ) ) { uwsgi_error_realpath ( src ) ; if ( ! ptr ) free ( dst ) ; <S2SV_StartBug> return NULL ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptr ) { if ( dir_len > PATH_MAX ) { uwsgi_log ( \"invalid<S2SV_blank>path<S2SV_blank>size:<S2SV_blank>%d<S2SV_blank>(max<S2SV_blank>%d)\\\\n\" , dir_len , PATH_MAX ) ; return NULL ; } char * src = uwsgi_concat2n ( <S2SV_ModEnd> dir , dir_len <S2SV_ModStart> dir , dir_len , \"\" , 0 ) <S2SV_ModEnd> ; char * <S2SV_ModStart> dst ) ; free ( src ) ; <S2SV_ModStart> NULL ; } free ( src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6412\n\n```\nCWE-200 int sbusfb_ioctl_helper ( unsigned long cmd , unsigned long arg , struct fb_info * info , int type , int fb_depth , unsigned long fb_size ) { switch ( cmd ) { case FBIOGTYPE : { struct fbtype __user * f = ( struct fbtype __user * ) arg ; if ( put_user ( type , & f -> fb_type ) || __put_user ( info -> var . yres , & f -> fb_height ) || __put_user ( info -> var . xres , & f -> fb_width ) || __put_user ( fb_depth , & f -> fb_depth ) || __put_user ( 0 , & f -> fb_cmsize ) || __put_user ( fb_size , & f -> fb_cmsize ) ) return - EFAULT ; return 0 ; } case FBIOPUTCMAP_SPARC : { struct fbcmap __user * c = ( struct fbcmap __user * ) arg ; struct fb_cmap cmap ; u16 red , green , blue ; u8 red8 , green8 , blue8 ; unsigned char __user * ured ; unsigned char __user * ugreen ; unsigned char __user * ublue ; <S2SV_StartBug> int index , count , i ; <S2SV_EndBug> if ( get_user ( index , & c -> index ) || __get_user ( count , & c -> count ) || __get_user ( ured , & c -> red ) || __get_user ( ugreen , & c -> green ) || __get_user ( ublue , & c -> blue ) ) return - EFAULT ; cmap . len = 1 ; cmap . red = & red ; cmap . green = & green ; cmap . blue = & blue ; cmap . transp = NULL ; for ( i = 0 ; i < count ; i ++ ) { int err ; if ( get_user ( red8 , & ured [ i ] ) || get_user ( green8 , & ugreen [ i ] ) || get_user ( blue8 , & ublue [ i ] ) ) return - EFAULT ; red = red8 << 8 ; green = green8 << 8 ; blue = blue8 << 8 ; cmap . start = index + i ; err = fb_set_cmap ( & cmap , info ) ; if ( err ) return err ; } return 0 ; } case FBIOGETCMAP_SPARC : { struct fbcmap __user * c = ( struct fbcmap __user * ) arg ; unsigned char __user * ured ; unsigned char __user * ugreen ; unsigned char __user * ublue ; struct fb_cmap * cmap = & info -> cmap ; <S2SV_StartBug> int index , count , i ; <S2SV_EndBug> u8 red , green , blue ; if ( get_user ( index , & c -> index ) || __get_user ( count , & c -> count ) || __get_user ( ured , & c -> red ) || __get_user ( ugreen , & c -> green ) || __get_user ( ublue , & c -> blue ) ) return - EFAULT ; if ( index + count > cmap -> len ) return - EINVAL ; for ( i = 0 ; i < count ; i ++ ) { red = cmap -> red [ index + i ] >> 8 ; green = cmap -> green [ index + i ] >> 8 ; blue = cmap -> blue [ index + i ] >> 8 ; if ( put_user ( red , & ured [ i ] ) || put_user ( green , & ugreen [ i ] ) || put_user ( blue , & ublue [ i ] ) ) return - EFAULT ; } return 0 ; } default : return - EINVAL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ublue ; unsigned <S2SV_ModStart> -> cmap ; unsigned\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static long __mptctl_ioctl ( struct file * file , unsigned int cmd , unsigned long arg ) { mpt_ioctl_header __user * uhdr = ( void __user * ) arg ; mpt_ioctl_header khdr ; int iocnum ; unsigned iocnumX ; int nonblock = ( file -> f_flags & O_NONBLOCK ) ; int ret ; MPT_ADAPTER * iocp = NULL ; if ( copy_from_user ( & khdr , uhdr , sizeof ( khdr ) ) ) { printk ( KERN_ERR MYNAM \"%s::mptctl_ioctl()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>mpt_ioctl_header<S2SV_blank>data<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uhdr ) ; return - EFAULT ; } ret = - ENXIO ; iocnumX = khdr . iocnum & 0xFF ; if ( ( ( iocnum = mpt_verify_adapter ( iocnumX , & iocp ) ) < 0 ) || ( iocp == NULL ) ) return - ENODEV ; if ( ! iocp -> active ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_ioctl()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>Controller<S2SV_blank>disabled.\\\\n\" , __FILE__ , __LINE__ ) ; return - EFAULT ; } if ( ( cmd & ~ IOCSIZE_MASK ) == ( MPTIOCINFO & ~ IOCSIZE_MASK ) ) { <S2SV_StartBug> return mptctl_getiocinfo ( arg , _IOC_SIZE ( cmd ) ) ; <S2SV_EndBug> } else if ( cmd == MPTTARGETINFO ) { <S2SV_StartBug> return mptctl_gettargetinfo ( arg ) ; <S2SV_EndBug> } else if ( cmd == MPTTEST ) { <S2SV_StartBug> return mptctl_readtest ( arg ) ; <S2SV_EndBug> } else if ( cmd == MPTEVENTQUERY ) { <S2SV_StartBug> return mptctl_eventquery ( arg ) ; <S2SV_EndBug> } else if ( cmd == MPTEVENTENABLE ) { <S2SV_StartBug> return mptctl_eventenable ( arg ) ; <S2SV_EndBug> } else if ( cmd == MPTEVENTREPORT ) { <S2SV_StartBug> return mptctl_eventreport ( arg ) ; <S2SV_EndBug> } else if ( cmd == MPTFWREPLACE ) { <S2SV_StartBug> return mptctl_replace_fw ( arg ) ; <S2SV_EndBug> } if ( ( ret = mptctl_syscall_down ( iocp , nonblock ) ) != 0 ) return ret ; if ( cmd == MPTFWDOWNLOAD ) <S2SV_StartBug> ret = mptctl_fw_download ( arg ) ; <S2SV_EndBug> else if ( cmd == MPTCOMMAND ) <S2SV_StartBug> ret = mptctl_mpt_command ( arg ) ; <S2SV_EndBug> else if ( cmd == MPTHARDRESET ) <S2SV_StartBug> ret = mptctl_do_reset ( arg ) ; <S2SV_EndBug> else if ( ( cmd & ~ IOCSIZE_MASK ) == ( HP_GETHOSTINFO & ~ IOCSIZE_MASK ) ) <S2SV_StartBug> ret = mptctl_hp_hostinfo ( arg , _IOC_SIZE ( cmd ) ) ; <S2SV_EndBug> else if ( cmd == HP_GETTARGETINFO ) <S2SV_StartBug> ret = mptctl_hp_targetinfo ( arg ) ; <S2SV_EndBug> else ret = - EINVAL ; mutex_unlock ( & iocp -> ioctl_cmds . mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return mptctl_getiocinfo ( iocp , <S2SV_ModStart> return mptctl_gettargetinfo ( iocp , <S2SV_ModStart> return mptctl_readtest ( iocp , <S2SV_ModStart> return mptctl_eventquery ( iocp , <S2SV_ModStart> return mptctl_eventenable ( iocp , <S2SV_ModStart> return mptctl_eventreport ( iocp , <S2SV_ModStart> return mptctl_replace_fw ( iocp , <S2SV_ModStart> = mptctl_fw_download ( iocp , <S2SV_ModStart> = mptctl_mpt_command ( iocp , <S2SV_ModStart> = mptctl_do_reset ( iocp , <S2SV_ModStart> = mptctl_hp_hostinfo ( iocp , <S2SV_ModStart> = mptctl_hp_targetinfo ( iocp ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4997\n\n```\nCWE-264 <S2SV_StartBug> int xt_check_entry_offsets ( const void * base , <S2SV_EndBug> unsigned int target_offset , unsigned int next_offset ) { <S2SV_StartBug> const struct xt_entry_target * t ; <S2SV_EndBug> <S2SV_StartBug> const char * e = base ; <S2SV_EndBug> if ( target_offset + sizeof ( * t ) > next_offset ) return - EINVAL ; t = ( void * ) ( e + target_offset ) ; if ( t -> u . target_size < sizeof ( * t ) ) return - EINVAL ; if ( target_offset + t -> u . target_size > next_offset ) return - EINVAL ; if ( strcmp ( t -> u . user . name , XT_STANDARD_TARGET ) == 0 && target_offset + sizeof ( struct xt_standard_target ) != next_offset ) return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void * base , const char * elems <S2SV_ModStart> next_offset ) { long size_of_base_struct = elems - ( const char * ) base ; <S2SV_ModStart> e = base ; if ( target_offset < size_of_base_struct ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int pppol2tp_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int err ; struct sk_buff * skb ; struct sock * sk = sock -> sk ; err = - EIO ; if ( sk -> sk_state & PPPOX_BOUND ) <S2SV_StartBug> goto end ; <S2SV_EndBug> msg -> msg_namelen = 0 ; err = 0 ; skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & err ) ; if ( ! skb ) goto end ; if ( len > skb -> len ) len = skb -> len ; else if ( len < skb -> len ) msg -> msg_flags |= MSG_TRUNC ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , len ) ; if ( likely ( err == 0 ) ) err = len ; kfree_skb ( skb ) ; end : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto end <S2SV_ModEnd> ; err =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static int pci_emul_mem_handler ( struct vmctx * ctx , int vcpu , int dir , uint64_t addr , int size , uint64_t * val , void * arg1 , long arg2 ) { struct pci_vdev * pdi = arg1 ; struct pci_vdev_ops * ops = pdi -> dev_ops ; uint64_t offset ; int bidx = ( int ) arg2 ; <S2SV_StartBug> assert ( bidx <= PCI_BARMAX ) ; <S2SV_EndBug> <S2SV_StartBug> assert ( pdi -> bar [ bidx ] . type == PCIBAR_MEM32 || <S2SV_EndBug> <S2SV_StartBug> pdi -> bar [ bidx ] . type == PCIBAR_MEM64 ) ; <S2SV_EndBug> assert ( addr >= pdi -> bar [ bidx ] . addr && addr + size <= pdi -> bar [ bidx ] . addr + pdi -> bar [ bidx ] . size ) ; offset = addr - pdi -> bar [ bidx ] . addr ; if ( dir == MEM_F_WRITE ) { if ( size == 8 ) { ( * ops -> vdev_barwrite ) ( ctx , vcpu , pdi , bidx , offset , 4 , * val & 0xffffffff ) ; ( * ops -> vdev_barwrite ) ( ctx , vcpu , pdi , bidx , offset + 4 , 4 , * val >> 32 ) ; } else { ( * ops -> vdev_barwrite ) ( ctx , vcpu , pdi , bidx , offset , size , bar_value ( size , * val ) ) ; } } else { if ( size == 8 ) { uint64_t val_lo , val_hi ; val_lo = ( * ops -> vdev_barread ) ( ctx , vcpu , pdi , bidx , offset , 4 ) ; val_lo = bar_value ( 4 , val_lo ) ; val_hi = ( * ops -> vdev_barread ) ( ctx , vcpu , pdi , bidx , offset + 4 , 4 ) ; * val = val_lo | ( val_hi << 32 ) ; } else { * val = ( * ops -> vdev_barread ) ( ctx , vcpu , pdi , bidx , offset , size ) ; * val = bar_value ( size , * val ) ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) arg2 ; if ( addr + size > <S2SV_ModEnd> pdi -> bar <S2SV_ModStart> bidx ] . addr + <S2SV_ModEnd> pdi -> bar <S2SV_ModStart> bidx ] . size ) { pr_err ( \"%s,<S2SV_blank>Out<S2SV_blank>of<S2SV_blank>emulated<S2SV_blank>memory<S2SV_blank>range\\\\n\" , __func__ ) ; return - ESRCH ; } <S2SV_ModEnd> offset = addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> void jas_seq2d_bindsub ( jas_matrix_t * s , jas_matrix_t * s1 , int xstart , <S2SV_EndBug> int ystart , int xend , int yend ) { jas_matrix_bindsub ( s , s1 , ystart - s1 -> ystart_ , xstart - s1 -> xstart_ , yend - s1 -> ystart_ - 1 , xend - s1 -> xstart_ - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * s1 , jas_matind_t xstart , jas_matind_t ystart , jas_matind_t xend , jas_matind_t <S2SV_ModEnd> yend ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 int snd_card_new ( struct device * parent , int idx , const char * xid , struct module * module , int extra_size , struct snd_card * * card_ret ) { struct snd_card * card ; int err ; if ( snd_BUG_ON ( ! card_ret ) ) return - EINVAL ; * card_ret = NULL ; if ( extra_size < 0 ) extra_size = 0 ; card = kzalloc ( sizeof ( * card ) + extra_size , GFP_KERNEL ) ; if ( ! card ) return - ENOMEM ; if ( extra_size > 0 ) card -> private_data = ( char * ) card + sizeof ( struct snd_card ) ; if ( xid ) strlcpy ( card -> id , xid , sizeof ( card -> id ) ) ; err = 0 ; mutex_lock ( & snd_card_mutex ) ; if ( idx < 0 ) idx = get_slot_from_bitmask ( idx , module_slot_match , module ) ; if ( idx < 0 ) idx = get_slot_from_bitmask ( idx , check_empty_slot , module ) ; if ( idx < 0 ) err = - ENODEV ; else if ( idx < snd_ecards_limit ) { if ( test_bit ( idx , snd_cards_lock ) ) err = - EBUSY ; } else if ( idx >= SNDRV_CARDS ) err = - ENODEV ; if ( err < 0 ) { mutex_unlock ( & snd_card_mutex ) ; dev_err ( parent , \"cannot<S2SV_blank>find<S2SV_blank>the<S2SV_blank>slot<S2SV_blank>for<S2SV_blank>index<S2SV_blank>%d<S2SV_blank>(range<S2SV_blank>0-%i),<S2SV_blank>error:<S2SV_blank>%d\\\\n\" , idx , snd_ecards_limit - 1 , err ) ; kfree ( card ) ; return err ; } set_bit ( idx , snd_cards_lock ) ; if ( idx >= snd_ecards_limit ) snd_ecards_limit = idx + 1 ; mutex_unlock ( & snd_card_mutex ) ; card -> dev = parent ; card -> number = idx ; card -> module = module ; INIT_LIST_HEAD ( & card -> devices ) ; init_rwsem ( & card -> controls_rwsem ) ; rwlock_init ( & card -> ctl_files_rwlock ) ; <S2SV_StartBug> INIT_LIST_HEAD ( & card -> controls ) ; <S2SV_EndBug> INIT_LIST_HEAD ( & card -> ctl_files ) ; spin_lock_init ( & card -> files_lock ) ; INIT_LIST_HEAD ( & card -> files_list ) ; # ifdef CONFIG_PM mutex_init ( & card -> power_lock ) ; init_waitqueue_head ( & card -> power_sleep ) ; # endif device_initialize ( & card -> card_dev ) ; card -> card_dev . parent = parent ; card -> card_dev . class = sound_class ; card -> card_dev . release = release_card_device ; card -> card_dev . groups = card_dev_attr_groups ; err = kobject_set_name ( & card -> card_dev . kobj , \"card%d\" , idx ) ; if ( err < 0 ) goto __error ; err = snd_ctl_create ( card ) ; if ( err < 0 ) { dev_err ( parent , \"unable<S2SV_blank>to<S2SV_blank>register<S2SV_blank>control<S2SV_blank>minors\\\\n\" ) ; goto __error ; } err = snd_info_card_create ( card ) ; if ( err < 0 ) { dev_err ( parent , \"unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>card<S2SV_blank>info\\\\n\" ) ; goto __error_ctl ; } * card_ret = card ; return 0 ; __error_ctl : snd_device_free_all ( card ) ; __error : put_device ( & card -> card_dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctl_files_rwlock ) ; mutex_init ( & card -> user_ctl_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_update_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> const int ref_frame_flags = va_arg ( args , int ) ; vp9_update_reference ( ctx -> cpi , ref_frame_flags ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void setup_features ( VP8_COMP * cpi ) { if ( cpi -> mb . e_mbd . segmentation_enabled ) { cpi -> mb . e_mbd . update_mb_segmentation_map = 1 ; cpi -> mb . e_mbd . update_mb_segmentation_data = 1 ; } else { cpi -> mb . e_mbd . update_mb_segmentation_map = 0 ; cpi -> mb . e_mbd . update_mb_segmentation_data = 0 ; } cpi -> mb . e_mbd . mode_ref_lf_delta_enabled = 0 ; cpi -> mb . e_mbd . mode_ref_lf_delta_update = 0 ; <S2SV_StartBug> vpx_memset ( cpi -> mb . e_mbd . ref_lf_deltas , 0 , sizeof ( cpi -> mb . e_mbd . ref_lf_deltas ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( cpi -> mb . e_mbd . mode_lf_deltas , 0 , sizeof ( cpi -> mb . e_mbd . mode_lf_deltas ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( cpi -> mb . e_mbd . last_ref_lf_deltas , 0 , sizeof ( cpi -> mb . e_mbd . ref_lf_deltas ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( cpi -> mb . e_mbd . last_mode_lf_deltas , 0 , sizeof ( cpi -> mb . e_mbd . mode_lf_deltas ) ) ; <S2SV_EndBug> set_default_lf_deltas ( cpi ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; memset <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( cpi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8925\n\n```\nCWE-404 static int omninet_open ( struct tty_struct * tty , struct usb_serial_port * port ) { <S2SV_StartBug> struct usb_serial * serial = port -> serial ; <S2SV_EndBug> struct usb_serial_port * wport ; wport = serial -> port [ 1 ] ; tty_port_tty_set ( & wport -> port , tty ) ; return usb_serial_generic_open ( tty , port ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> port ) { <S2SV_ModEnd> return usb_serial_generic_open (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8786\n\n```\nCWE-787 BITMAP_UPDATE * update_read_bitmap_update ( rdpUpdate * update , wStream * s ) { UINT32 i ; BITMAP_UPDATE * bitmapUpdate = calloc ( 1 , sizeof ( BITMAP_UPDATE ) ) ; if ( ! bitmapUpdate ) goto fail ; if ( Stream_GetRemainingLength ( s ) < 2 ) goto fail ; Stream_Read_UINT16 ( s , bitmapUpdate -> number ) ; WLog_Print ( update -> log , WLOG_TRACE , \"BitmapUpdate:<S2SV_blank>%\" PRIu32 \"\" , bitmapUpdate -> number ) ; if ( bitmapUpdate -> number > bitmapUpdate -> count ) { <S2SV_StartBug> UINT16 count ; <S2SV_EndBug> BITMAP_DATA * newdata ; count = bitmapUpdate -> number * 2 ; <S2SV_StartBug> newdata = ( BITMAP_DATA * ) realloc ( bitmapUpdate -> rectangles , <S2SV_EndBug> sizeof ( BITMAP_DATA ) * count ) ; if ( ! newdata ) goto fail ; bitmapUpdate -> rectangles = newdata ; ZeroMemory ( & bitmapUpdate -> rectangles [ bitmapUpdate -> count ] , sizeof ( BITMAP_DATA ) * ( count - bitmapUpdate -> count ) ) ; bitmapUpdate -> count = count ; } for ( i = 0 ; i < bitmapUpdate -> number ; i ++ ) { if ( ! update_read_bitmap_data ( update , s , & bitmapUpdate -> rectangles [ i ] ) ) goto fail ; } return bitmapUpdate ; fail : free_bitmap_update ( update -> context , bitmapUpdate ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count ) { UINT32 <S2SV_ModEnd> count = bitmapUpdate <S2SV_ModStart> * 2 ; BITMAP_DATA *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int fpAcc ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint32 bps = tif -> tif_dir . td_bitspersample / 8 ; tmsize_t wc = cc / bps ; tmsize_t count = cc ; uint8 * cp = ( uint8 * ) cp0 ; <S2SV_StartBug> uint8 * tmp = ( uint8 * ) _TIFFmalloc ( cc ) ; <S2SV_EndBug> if ( cc % ( bps * stride ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"fpAcc\" , \"%s\" , \"cc%(bps*stride))!=0\" ) ; return 0 ; } <S2SV_StartBug> if ( ! tmp ) <S2SV_EndBug> return 0 ; while ( count > stride ) { REPEAT4 ( stride , cp [ stride ] = ( unsigned char ) ( ( cp [ stride ] + cp [ 0 ] ) & 0xff ) ; cp ++ ) count -= stride ; } _TIFFmemcpy ( tmp , cp0 , cc ) ; cp = ( uint8 * ) cp0 ; for ( count = 0 ; count < wc ; count ++ ) { uint32 byte ; for ( byte = 0 ; byte < bps ; byte ++ ) { # if WORDS_BIGENDIAN cp [ bps * count + byte ] = tmp [ byte * wc + count ] ; # else cp [ bps * count + byte ] = tmp [ ( bps - byte - 1 ) * wc + count ] ; # endif } } _TIFFfree ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8 * tmp <S2SV_ModEnd> ; if ( <S2SV_ModStart> 0 ; } tmp = ( uint8 * ) _TIFFmalloc ( cc ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11833\n\n```\nCWE-908 static int ext4_ext_grow_indepth ( handle_t * handle , struct inode * inode , unsigned int flags ) { struct ext4_extent_header * neh ; struct buffer_head * bh ; ext4_fsblk_t newblock , goal = 0 ; struct ext4_super_block * es = EXT4_SB ( inode -> i_sb ) -> s_es ; int err = 0 ; <S2SV_StartBug> if ( ext_depth ( inode ) ) <S2SV_EndBug> goal = ext4_idx_pblock ( EXT_FIRST_INDEX ( ext_inode_hdr ( inode ) ) ) ; if ( goal > le32_to_cpu ( es -> s_first_data_block ) ) { flags |= EXT4_MB_HINT_TRY_GOAL ; goal -- ; } else goal = ext4_inode_to_goal_block ( inode ) ; newblock = ext4_new_meta_blocks ( handle , inode , goal , flags , NULL , & err ) ; if ( newblock == 0 ) return err ; bh = sb_getblk_gfp ( inode -> i_sb , newblock , __GFP_MOVABLE | GFP_NOFS ) ; if ( unlikely ( ! bh ) ) return - ENOMEM ; lock_buffer ( bh ) ; err = ext4_journal_get_create_access ( handle , bh ) ; if ( err ) { unlock_buffer ( bh ) ; goto out ; } <S2SV_StartBug> memmove ( bh -> b_data , EXT4_I ( inode ) -> i_data , <S2SV_EndBug> <S2SV_StartBug> sizeof ( EXT4_I ( inode ) -> i_data ) ) ; <S2SV_EndBug> neh = ext_block_hdr ( bh ) ; if ( ext_depth ( inode ) ) neh -> eh_max = cpu_to_le16 ( ext4_ext_space_block_idx ( inode , 0 ) ) ; else neh -> eh_max = cpu_to_le16 ( ext4_ext_space_block ( inode , 0 ) ) ; neh -> eh_magic = EXT4_EXT_MAGIC ; ext4_extent_block_csum_set ( inode , neh ) ; set_buffer_uptodate ( bh ) ; unlock_buffer ( bh ) ; err = ext4_handle_dirty_metadata ( handle , inode , bh ) ; if ( err ) goto out ; neh = ext_inode_hdr ( inode ) ; neh -> eh_entries = cpu_to_le16 ( 1 ) ; ext4_idx_store_pblock ( EXT_FIRST_INDEX ( neh ) , newblock ) ; if ( neh -> eh_depth == 0 ) { neh -> eh_max = cpu_to_le16 ( ext4_ext_space_root_idx ( inode , 0 ) ) ; EXT_FIRST_INDEX ( neh ) -> ei_block = EXT_FIRST_EXTENT ( neh ) -> ee_block ; } ext_debug ( \"new<S2SV_blank>root:<S2SV_blank>num<S2SV_blank>%d(%d),<S2SV_blank>lblock<S2SV_blank>%d,<S2SV_blank>ptr<S2SV_blank>%llu\\\\n\" , le16_to_cpu ( neh -> eh_entries ) , le16_to_cpu ( neh -> eh_max ) , le32_to_cpu ( EXT_FIRST_INDEX ( neh ) -> ei_block ) , ext4_idx_pblock ( EXT_FIRST_INDEX ( neh ) ) ) ; le16_add_cpu ( & neh -> eh_depth , 1 ) ; ext4_mark_inode_dirty ( handle , inode ) ; out : brelse ( bh ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; size_t ext_size = 0 ; <S2SV_ModStart> out ; } ext_size = sizeof ( EXT4_I ( inode ) -> i_data ) ; <S2SV_ModStart> -> i_data , ext_size ) ; memset ( bh -> b_data + ext_size , 0 , inode -> i_sb -> s_blocksize - ext_size <S2SV_ModEnd> ) ; neh\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static struct sock * tcp_v6_syn_recv_sock ( struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst ) { struct inet6_request_sock * treq ; struct ipv6_pinfo * newnp , * np = inet6_sk ( sk ) ; struct tcp6_sock * newtcp6sk ; struct inet_sock * newinet ; struct tcp_sock * newtp ; struct sock * newsk ; struct ipv6_txoptions * opt ; # ifdef CONFIG_TCP_MD5SIG struct tcp_md5sig_key * key ; # endif if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = tcp_v4_syn_recv_sock ( sk , skb , req , dst ) ; if ( newsk == NULL ) return NULL ; newtcp6sk = ( struct tcp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newtcp6sk -> inet6 ; newinet = inet_sk ( newsk ) ; newnp = inet6_sk ( newsk ) ; newtp = tcp_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; ipv6_addr_set_v4mapped ( newinet -> inet_daddr , & newnp -> daddr ) ; ipv6_addr_set_v4mapped ( newinet -> inet_saddr , & newnp -> saddr ) ; ipv6_addr_copy ( & newnp -> rcv_saddr , & newnp -> saddr ) ; inet_csk ( newsk ) -> icsk_af_ops = & ipv6_mapped ; newsk -> sk_backlog_rcv = tcp_v4_do_rcv ; # ifdef CONFIG_TCP_MD5SIG newtp -> af_specific = & tcp_sock_ipv6_mapped_specific ; # endif newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; tcp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } treq = inet6_rsk ( req ) ; opt = np -> opt ; if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( ! dst ) { dst = inet6_csk_route_req ( sk , req ) ; if ( ! dst ) goto out ; } newsk = tcp_create_openreq_child ( sk , req , skb ) ; if ( newsk == NULL ) goto out_nonewsk ; newsk -> sk_gso_type = SKB_GSO_TCPV6 ; __ip6_dst_store ( newsk , dst , NULL , NULL ) ; newtcp6sk = ( struct tcp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newtcp6sk -> inet6 ; newtp = tcp_sk ( newsk ) ; newinet = inet_sk ( newsk ) ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; ipv6_addr_copy ( & newnp -> daddr , & treq -> rmt_addr ) ; ipv6_addr_copy ( & newnp -> saddr , & treq -> loc_addr ) ; ipv6_addr_copy ( & newnp -> rcv_saddr , & treq -> loc_addr ) ; newsk -> sk_bound_dev_if = treq -> iif ; <S2SV_StartBug> newinet -> opt = NULL ; <S2SV_EndBug> newnp -> ipv6_fl_list = NULL ; newnp -> rxopt . all = np -> rxopt . all ; newnp -> pktoptions = NULL ; if ( treq -> pktopts != NULL ) { newnp -> pktoptions = skb_clone ( treq -> pktopts , GFP_ATOMIC ) ; kfree_skb ( treq -> pktopts ) ; treq -> pktopts = NULL ; if ( newnp -> pktoptions ) skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; if ( opt ) { newnp -> opt = ipv6_dup_options ( newsk , opt ) ; if ( opt != np -> opt ) sock_kfree_s ( sk , opt , opt -> tot_len ) ; } inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( newnp -> opt ) inet_csk ( newsk ) -> icsk_ext_hdr_len = ( newnp -> opt -> opt_nflen + newnp -> opt -> opt_flen ) ; tcp_mtup_init ( newsk ) ; tcp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newtp -> advmss = dst_metric_advmss ( dst ) ; tcp_initialize_rcv_mss ( newsk ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; # ifdef CONFIG_TCP_MD5SIG if ( ( key = tcp_v6_md5_do_lookup ( sk , & newnp -> daddr ) ) != NULL ) { char * newkey = kmemdup ( key -> key , key -> keylen , GFP_ATOMIC ) ; if ( newkey != NULL ) tcp_v6_md5_do_add ( newsk , & newnp -> daddr , newkey , key -> keylen ) ; } # endif if ( __inet_inherit_port ( sk , newsk ) < 0 ) { sock_put ( newsk ) ; goto out ; } __inet6_hash ( newsk , NULL ) ; return newsk ; out_overflow : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : if ( opt && opt != np -> opt ) sock_kfree_s ( sk , opt , opt -> tot_len ) ; dst_release ( dst ) ; out : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; newinet -> inet_opt <S2SV_ModEnd> = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 int touch ( const char * path ) { <S2SV_StartBug> return touch_file ( path , false , USEC_INFINITY , UID_INVALID , GID_INVALID , 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , GID_INVALID , MODE_INVALID <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4127\n\n```\nCWE-264 static int sd_ioctl ( struct block_device * bdev , fmode_t mode , unsigned int cmd , unsigned long arg ) { struct gendisk * disk = bdev -> bd_disk ; struct scsi_disk * sdkp = scsi_disk ( disk ) ; struct scsi_device * sdp = sdkp -> device ; void __user * p = ( void __user * ) arg ; int error ; SCSI_LOG_IOCTL ( 1 , sd_printk ( KERN_INFO , sdkp , \"sd_ioctl:<S2SV_blank>disk=%s,<S2SV_blank>\" \"cmd=0x%x\\\\n\" , disk -> disk_name , cmd ) ) ; <S2SV_StartBug> error = scsi_nonblockable_ioctl ( sdp , cmd , p , <S2SV_EndBug> ( mode & FMODE_NDELAY ) != 0 ) ; if ( ! scsi_block_when_processing_errors ( sdp ) || ! error ) goto out ; switch ( cmd ) { case SCSI_IOCTL_GET_IDLUN : case SCSI_IOCTL_GET_BUS_NUMBER : error = scsi_ioctl ( sdp , cmd , p ) ; break ; default : error = scsi_cmd_blk_ioctl ( bdev , mode , cmd , p ) ; if ( error != - ENOTTY ) break ; error = scsi_ioctl ( sdp , cmd , p ) ; break ; } out : return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; error = scsi_verify_blk_ioctl ( bdev , cmd ) ; if ( error < 0 ) return error ; error =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12818\n\n```\nCWE-476 int nfc_llcp_send_connect ( struct nfc_llcp_sock * sock ) { struct nfc_llcp_local * local ; struct sk_buff * skb ; u8 * service_name_tlv = NULL , service_name_tlv_length ; u8 * miux_tlv = NULL , miux_tlv_length ; u8 * rw_tlv = NULL , rw_tlv_length , rw ; int err ; u16 size = 0 ; __be16 miux ; pr_debug ( \"Sending<S2SV_blank>CONNECT\\\\n\" ) ; local = sock -> local ; if ( local == NULL ) return - ENODEV ; if ( sock -> service_name != NULL ) { service_name_tlv = nfc_llcp_build_tlv ( LLCP_TLV_SN , sock -> service_name , sock -> service_name_len , & service_name_tlv_length ) ; <S2SV_StartBug> size += service_name_tlv_length ; <S2SV_EndBug> } miux = be16_to_cpu ( sock -> miux ) > LLCP_MAX_MIUX ? local -> miux : sock -> miux ; rw = sock -> rw > LLCP_MAX_RW ? local -> rw : sock -> rw ; miux_tlv = nfc_llcp_build_tlv ( LLCP_TLV_MIUX , ( u8 * ) & miux , 0 , & miux_tlv_length ) ; <S2SV_StartBug> size += miux_tlv_length ; <S2SV_EndBug> rw_tlv = nfc_llcp_build_tlv ( LLCP_TLV_RW , & rw , 0 , & rw_tlv_length ) ; <S2SV_StartBug> size += rw_tlv_length ; <S2SV_EndBug> pr_debug ( \"SKB<S2SV_blank>size<S2SV_blank>%d<S2SV_blank>SN<S2SV_blank>length<S2SV_blank>%zu\\\\n\" , size , sock -> service_name_len ) ; skb = llcp_allocate_pdu ( sock , LLCP_PDU_CONNECT , size ) ; if ( skb == NULL ) { err = - ENOMEM ; goto error_tlv ; } llcp_add_tlv ( skb , service_name_tlv , service_name_tlv_length ) ; llcp_add_tlv ( skb , miux_tlv , miux_tlv_length ) ; llcp_add_tlv ( skb , rw_tlv , rw_tlv_length ) ; skb_queue_tail ( & local -> tx_queue , skb ) ; err = 0 ; error_tlv : if ( err ) pr_err ( \"error<S2SV_blank>%d\\\\n\" , err ) ; kfree ( service_name_tlv ) ; kfree ( miux_tlv ) ; kfree ( rw_tlv ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> service_name_tlv_length ) ; if ( ! service_name_tlv ) { err = - ENOMEM ; goto error_tlv ; } <S2SV_ModStart> miux_tlv_length ) ; if ( ! miux_tlv ) { err = - ENOMEM ; goto error_tlv ; } <S2SV_ModStart> rw_tlv_length ) ; if ( ! rw_tlv ) { err = - ENOMEM ; goto error_tlv ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void <S2SV_StartBug> l2tp_framing_type_print ( netdissect_options * ndo , const u_char * dat ) <S2SV_EndBug> { <S2SV_StartBug> const uint32_t * ptr = ( const uint32_t * ) dat ; <S2SV_EndBug> if ( EXTRACT_32BITS ( ptr ) & L2TP_FRAMING_TYPE_ASYNC_MASK ) { ND_PRINT ( ( ndo , \"A\" ) ) ; } if ( EXTRACT_32BITS ( ptr ) & L2TP_FRAMING_TYPE_SYNC_MASK ) { ND_PRINT ( ( ndo , \"S\" ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_char * dat , u_int length <S2SV_ModStart> ) dat ; if ( length < 4 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6537\n\n```\nCWE-200 static void copy_to_user_state ( struct xfrm_state * x , struct xfrm_usersa_info * p ) { <S2SV_StartBug> memcpy ( & p -> id , & x -> id , sizeof ( p -> id ) ) ; <S2SV_EndBug> memcpy ( & p -> sel , & x -> sel , sizeof ( p -> sel ) ) ; memcpy ( & p -> lft , & x -> lft , sizeof ( p -> lft ) ) ; memcpy ( & p -> curlft , & x -> curlft , sizeof ( p -> curlft ) ) ; memcpy ( & p -> stats , & x -> stats , sizeof ( p -> stats ) ) ; memcpy ( & p -> saddr , & x -> props . saddr , sizeof ( p -> saddr ) ) ; p -> mode = x -> props . mode ; p -> replay_window = x -> props . replay_window ; p -> reqid = x -> props . reqid ; p -> family = x -> props . family ; p -> flags = x -> props . flags ; p -> seq = x -> km . seq ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p ) { memset ( p , 0 , sizeof ( * p ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8cx_pick_filter_level ( YV12_BUFFER_CONFIG * sd , VP8_COMP * cpi ) { VP8_COMMON * cm = & cpi -> common ; int best_err = 0 ; int filt_err = 0 ; int min_filter_level = get_min_filter_level ( cpi , cm -> base_qindex ) ; int max_filter_level = get_max_filter_level ( cpi , cm -> base_qindex ) ; int filter_step ; int filt_high = 0 ; <S2SV_StartBug> int filt_mid = cm -> filter_level ; <S2SV_EndBug> int filt_low = 0 ; int filt_best ; int filt_direction = 0 ; int Bias = 0 ; int ss_err [ MAX_LOOP_FILTER + 1 ] ; YV12_BUFFER_CONFIG * saved_frame = cm -> frame_to_show ; <S2SV_StartBug> vpx_memset ( ss_err , 0 , sizeof ( ss_err ) ) ; <S2SV_EndBug> cm -> frame_to_show = & cpi -> pick_lf_lvl_frame ; if ( cm -> frame_type == KEY_FRAME ) cm -> sharpness_level = 0 ; else cm -> sharpness_level = cpi -> oxcf . Sharpness ; filt_mid = cm -> filter_level ; if ( filt_mid < min_filter_level ) filt_mid = min_filter_level ; else if ( filt_mid > max_filter_level ) filt_mid = max_filter_level ; filter_step = ( filt_mid < 16 ) ? 4 : filt_mid / 4 ; vpx_yv12_copy_y ( saved_frame , cm -> frame_to_show ) ; vp8cx_set_alt_lf_level ( cpi , filt_mid ) ; vp8_loop_filter_frame_yonly ( cm , & cpi -> mb . e_mbd , filt_mid ) ; best_err = vp8_calc_ss_err ( sd , cm -> frame_to_show ) ; ss_err [ filt_mid ] = best_err ; filt_best = filt_mid ; while ( filter_step > 0 ) { Bias = ( best_err >> ( 15 - ( filt_mid / 8 ) ) ) * filter_step ; if ( cpi -> twopass . section_intra_rating < 20 ) Bias = Bias * cpi -> twopass . section_intra_rating / 20 ; filt_high = ( ( filt_mid + filter_step ) > max_filter_level ) ? max_filter_level : ( filt_mid + filter_step ) ; filt_low = ( ( filt_mid - filter_step ) < min_filter_level ) ? min_filter_level : ( filt_mid - filter_step ) ; if ( ( filt_direction <= 0 ) && ( filt_low != filt_mid ) ) { if ( ss_err [ filt_low ] == 0 ) { vpx_yv12_copy_y ( saved_frame , cm -> frame_to_show ) ; vp8cx_set_alt_lf_level ( cpi , filt_low ) ; vp8_loop_filter_frame_yonly ( cm , & cpi -> mb . e_mbd , filt_low ) ; filt_err = vp8_calc_ss_err ( sd , cm -> frame_to_show ) ; ss_err [ filt_low ] = filt_err ; } else filt_err = ss_err [ filt_low ] ; if ( ( filt_err - Bias ) < best_err ) { if ( filt_err < best_err ) best_err = filt_err ; filt_best = filt_low ; } } if ( ( filt_direction >= 0 ) && ( filt_high != filt_mid ) ) { if ( ss_err [ filt_high ] == 0 ) { vpx_yv12_copy_y ( saved_frame , cm -> frame_to_show ) ; vp8cx_set_alt_lf_level ( cpi , filt_high ) ; vp8_loop_filter_frame_yonly ( cm , & cpi -> mb . e_mbd , filt_high ) ; filt_err = vp8_calc_ss_err ( sd , cm -> frame_to_show ) ; ss_err [ filt_high ] = filt_err ; } else filt_err = ss_err [ filt_high ] ; if ( filt_err < ( best_err - Bias ) ) { best_err = filt_err ; filt_best = filt_high ; } } if ( filt_best == filt_mid ) { filter_step = filter_step / 2 ; filt_direction = 0 ; } else { filt_direction = ( filt_best < filt_mid ) ? - 1 : 1 ; filt_mid = filt_best ; } } cm -> filter_level = filt_best ; cm -> frame_to_show = saved_frame ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int filt_mid <S2SV_ModEnd> ; int filt_low <S2SV_ModStart> -> frame_to_show ; memset <S2SV_ModEnd> ( ss_err ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13304\n\n```\nCWE-617 int ff_h263_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { const uint8_t * buf = avpkt -> data ; int buf_size = avpkt -> size ; MpegEncContext * s = avctx -> priv_data ; int ret ; int slice_ret = 0 ; AVFrame * pict = data ; if ( buf_size == 0 ) { if ( s -> low_delay == 0 && s -> next_picture_ptr ) { if ( ( ret = av_frame_ref ( pict , s -> next_picture_ptr -> f ) ) < 0 ) return ret ; s -> next_picture_ptr = NULL ; * got_frame = 1 ; } return 0 ; } if ( s -> avctx -> flags & AV_CODEC_FLAG_TRUNCATED ) { int next ; if ( CONFIG_MPEG4_DECODER && s -> codec_id == AV_CODEC_ID_MPEG4 ) { next = ff_mpeg4_find_frame_end ( & s -> parse_context , buf , buf_size ) ; } else if ( CONFIG_H263_DECODER && s -> codec_id == AV_CODEC_ID_H263 ) { next = ff_h263_find_frame_end ( & s -> parse_context , buf , buf_size ) ; } else if ( CONFIG_H263P_DECODER && s -> codec_id == AV_CODEC_ID_H263P ) { next = ff_h263_find_frame_end ( & s -> parse_context , buf , buf_size ) ; } else { av_log ( s -> avctx , AV_LOG_ERROR , \"this<S2SV_blank>codec<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>truncated<S2SV_blank>bitstreams\\\\n\" ) ; return AVERROR ( ENOSYS ) ; } if ( ff_combine_frame ( & s -> parse_context , next , ( const uint8_t * * ) & buf , & buf_size ) < 0 ) return buf_size ; } retry : if ( s -> divx_packed && s -> bitstream_buffer_size ) { int i ; for ( i = 0 ; i < buf_size - 3 ; i ++ ) { if ( buf [ i ] == 0 && buf [ i + 1 ] == 0 && buf [ i + 2 ] == 1 ) { if ( buf [ i + 3 ] == 0xB0 ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Discarding<S2SV_blank>excessive<S2SV_blank>bitstream<S2SV_blank>in<S2SV_blank>packed<S2SV_blank>xvid\\\\n\" ) ; s -> bitstream_buffer_size = 0 ; } break ; } } } if ( s -> bitstream_buffer_size && ( s -> divx_packed || buf_size <= MAX_NVOP_SIZE ) ) ret = init_get_bits8 ( & s -> gb , s -> bitstream_buffer , s -> bitstream_buffer_size ) ; else ret = init_get_bits8 ( & s -> gb , buf , buf_size ) ; s -> bitstream_buffer_size = 0 ; if ( ret < 0 ) return ret ; if ( ! s -> context_initialized ) ff_mpv_idct_init ( s ) ; if ( CONFIG_WMV2_DECODER && s -> msmpeg4_version == 5 ) { ret = ff_wmv2_decode_picture_header ( s ) ; } else if ( CONFIG_MSMPEG4_DECODER && s -> msmpeg4_version ) { ret = ff_msmpeg4_decode_picture_header ( s ) ; } else if ( CONFIG_MPEG4_DECODER && avctx -> codec_id == AV_CODEC_ID_MPEG4 ) { if ( s -> avctx -> extradata_size && s -> picture_number == 0 ) { GetBitContext gb ; if ( init_get_bits8 ( & gb , s -> avctx -> extradata , s -> avctx -> extradata_size ) >= 0 ) ff_mpeg4_decode_picture_header ( avctx -> priv_data , & gb ) ; } ret = ff_mpeg4_decode_picture_header ( avctx -> priv_data , & s -> gb ) ; } else if ( CONFIG_H263I_DECODER && s -> codec_id == AV_CODEC_ID_H263I ) { ret = ff_intel_h263_decode_picture_header ( s ) ; } else if ( CONFIG_FLV_DECODER && s -> h263_flv ) { ret = ff_flv_decode_picture_header ( s ) ; } else { ret = ff_h263_decode_picture_header ( s ) ; } if ( ret < 0 || ret == FRAME_SKIPPED ) { if ( s -> width != avctx -> coded_width || s -> height != avctx -> coded_height ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Reverting<S2SV_blank>picture<S2SV_blank>dimensions<S2SV_blank>change<S2SV_blank>due<S2SV_blank>to<S2SV_blank>header<S2SV_blank>decoding<S2SV_blank>failure\\\\n\" ) ; s -> width = avctx -> coded_width ; s -> height = avctx -> coded_height ; } } if ( ret == FRAME_SKIPPED ) return get_consumed_bytes ( s , buf_size ) ; if ( ret < 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"header<S2SV_blank>damaged\\\\n\" ) ; return ret ; } if ( ! s -> context_initialized ) { avctx -> pix_fmt = h263_get_format ( avctx ) ; if ( ( ret = ff_mpv_common_init ( s ) ) < 0 ) return ret ; } if ( ! s -> current_picture_ptr || s -> current_picture_ptr -> f -> data [ 0 ] ) { int i = ff_find_unused_picture ( s -> avctx , s -> picture , 0 ) ; if ( i < 0 ) return i ; s -> current_picture_ptr = & s -> picture [ i ] ; } avctx -> has_b_frames = ! s -> low_delay ; if ( CONFIG_MPEG4_DECODER && avctx -> codec_id == AV_CODEC_ID_MPEG4 ) { if ( ff_mpeg4_workaround_bugs ( avctx ) == 1 ) goto retry ; if ( s -> studio_profile != ( s -> idsp . idct == NULL ) ) ff_mpv_idct_init ( s ) ; } if ( s -> width != avctx -> coded_width || s -> height != avctx -> coded_height || s -> context_reinit ) { s -> context_reinit = 0 ; ret = ff_set_dimensions ( avctx , s -> width , s -> height ) ; if ( ret < 0 ) return ret ; ff_set_sar ( avctx , avctx -> sample_aspect_ratio ) ; if ( ( ret = ff_mpv_common_frame_size_change ( s ) ) ) return ret ; if ( avctx -> pix_fmt != h263_get_format ( avctx ) ) { av_log ( avctx , AV_LOG_ERROR , \"format<S2SV_blank>change<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; avctx -> pix_fmt = AV_PIX_FMT_NONE ; return AVERROR_UNKNOWN ; } } if ( s -> codec_id == AV_CODEC_ID_H263 || s -> codec_id == AV_CODEC_ID_H263P || s -> codec_id == AV_CODEC_ID_H263I ) s -> gob_index = H263_GOB_HEIGHT ( s -> height ) ; s -> current_picture . f -> pict_type = s -> pict_type ; s -> current_picture . f -> key_frame = s -> pict_type == AV_PICTURE_TYPE_I ; if ( ! s -> last_picture_ptr && ( s -> pict_type == AV_PICTURE_TYPE_B || s -> droppable ) ) return get_consumed_bytes ( s , buf_size ) ; if ( ( avctx -> skip_frame >= AVDISCARD_NONREF && s -> pict_type == AV_PICTURE_TYPE_B ) || ( avctx -> skip_frame >= AVDISCARD_NONKEY && s -> pict_type != AV_PICTURE_TYPE_I ) || avctx -> skip_frame >= AVDISCARD_ALL ) return get_consumed_bytes ( s , buf_size ) ; if ( s -> next_p_frame_damaged ) { if ( s -> pict_type == AV_PICTURE_TYPE_B ) return get_consumed_bytes ( s , buf_size ) ; else s -> next_p_frame_damaged = 0 ; } if ( ( ! s -> no_rounding ) || s -> pict_type == AV_PICTURE_TYPE_B ) { s -> me . qpel_put = s -> qdsp . put_qpel_pixels_tab ; s -> me . qpel_avg = s -> qdsp . avg_qpel_pixels_tab ; } else { s -> me . qpel_put = s -> qdsp . put_no_rnd_qpel_pixels_tab ; s -> me . qpel_avg = s -> qdsp . avg_qpel_pixels_tab ; } if ( ( ret = ff_mpv_frame_start ( s , avctx ) ) < 0 ) return ret ; if ( ! s -> divx_packed ) ff_thread_finish_setup ( avctx ) ; if ( avctx -> hwaccel ) { ret = avctx -> hwaccel -> start_frame ( avctx , s -> gb . buffer , s -> gb . buffer_end - s -> gb . buffer ) ; if ( ret < 0 ) return ret ; } ff_mpeg_er_frame_start ( s ) ; if ( CONFIG_WMV2_DECODER && s -> msmpeg4_version == 5 ) { ret = ff_wmv2_decode_secondary_picture_header ( s ) ; if ( ret < 0 ) return ret ; if ( ret == 1 ) goto frame_end ; } s -> mb_x = 0 ; s -> mb_y = 0 ; slice_ret = decode_slice ( s ) ; while ( s -> mb_y < s -> mb_height ) { if ( s -> msmpeg4_version ) { if ( s -> slice_height == 0 || s -> mb_x != 0 || slice_ret < 0 || ( s -> mb_y % s -> slice_height ) != 0 || get_bits_left ( & s -> gb ) < 0 ) break ; } else { int prev_x = s -> mb_x , prev_y = s -> mb_y ; if ( ff_h263_resync ( s ) < 0 ) break ; if ( prev_y * s -> mb_width + prev_x < s -> mb_y * s -> mb_width + s -> mb_x ) s -> er . error_occurred = 1 ; } if ( s -> msmpeg4_version < 4 && s -> h263_pred ) ff_mpeg4_clean_buffers ( s ) ; if ( decode_slice ( s ) < 0 ) slice_ret = AVERROR_INVALIDDATA ; } if ( s -> msmpeg4_version && s -> msmpeg4_version < 4 && s -> pict_type == AV_PICTURE_TYPE_I ) if ( ! CONFIG_MSMPEG4_DECODER || ff_msmpeg4_decode_ext_header ( s , buf_size ) < 0 ) s -> er . error_status_table [ s -> mb_num - 1 ] = ER_MB_ERROR ; av_assert1 ( s -> bitstream_buffer_size == 0 ) ; <S2SV_StartBug> frame_end : <S2SV_EndBug> ff_er_frame_end ( & s -> er ) ; if ( avctx -> hwaccel ) { ret = avctx -> hwaccel -> end_frame ( avctx ) ; if ( ret < 0 ) return ret ; } ff_mpv_frame_end ( s ) ; if ( CONFIG_MPEG4_DECODER && avctx -> codec_id == AV_CODEC_ID_MPEG4 ) ff_mpeg4_frame_end ( avctx , buf , buf_size ) ; if ( ! s -> divx_packed && avctx -> hwaccel ) ff_thread_finish_setup ( avctx ) ; av_assert1 ( s -> current_picture . f -> pict_type == s -> current_picture_ptr -> f -> pict_type ) ; av_assert1 ( s -> current_picture . f -> pict_type == s -> pict_type ) ; if ( s -> pict_type == AV_PICTURE_TYPE_B || s -> low_delay ) { if ( ( ret = av_frame_ref ( pict , s -> current_picture_ptr -> f ) ) < 0 ) return ret ; ff_print_debug_info ( s , s -> current_picture_ptr , pict ) ; ff_mpv_export_qp_table ( s , pict , s -> current_picture_ptr , FF_QSCALE_TYPE_MPEG1 ) ; } else if ( s -> last_picture_ptr ) { if ( ( ret = av_frame_ref ( pict , s -> last_picture_ptr -> f ) ) < 0 ) return ret ; ff_print_debug_info ( s , s -> last_picture_ptr , pict ) ; ff_mpv_export_qp_table ( s , pict , s -> last_picture_ptr , FF_QSCALE_TYPE_MPEG1 ) ; } if ( s -> last_picture_ptr || s -> low_delay ) { if ( pict -> format == AV_PIX_FMT_YUV420P && ( s -> codec_tag == AV_RL32 ( \"GEOV\" ) || s -> codec_tag == AV_RL32 ( \"GEOX\" ) ) ) { int x , y , p ; av_frame_make_writable ( pict ) ; for ( p = 0 ; p < 3 ; p ++ ) { int w = AV_CEIL_RSHIFT ( pict -> width , ! ! p ) ; int h = AV_CEIL_RSHIFT ( pict -> height , ! ! p ) ; int linesize = pict -> linesize [ p ] ; for ( y = 0 ; y < ( h >> 1 ) ; y ++ ) for ( x = 0 ; x < w ; x ++ ) FFSWAP ( int , pict -> data [ p ] [ x + y * linesize ] , pict -> data [ p ] [ x + ( h - 1 - y ) * linesize ] ) ; } } * got_frame = 1 ; } if ( slice_ret < 0 && ( avctx -> err_recognition & AV_EF_EXPLODE ) ) return slice_ret ; else return get_consumed_bytes ( s , buf_size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; frame_end : if ( ! s -> studio_profile )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11377\n\n```\nCWE-125 INST_HANDLER ( sbrx ) { int b = buf [ 0 ] & 0x7 ; int r = ( ( buf [ 0 ] >> 4 ) & 0xf ) | ( ( buf [ 1 ] & 0x01 ) << 4 ) ; <S2SV_StartBug> RAnalOp next_op ; <S2SV_EndBug> avr_op_analyze ( anal , & next_op , op -> addr + op -> size , buf + op -> size , len - op -> size , cpu ) ; r_strbuf_fini ( & next_op . esil ) ; op -> jump = op -> addr + next_op . size + 2 ; op -> cycles = 1 ; ESIL_A ( \"%d,1,<<,r%d,&,\" , b , r ) ; ESIL_A ( ( buf [ 1 ] & 0xe ) == 0xc ? \"!,\" : \"!,!,\" ) ; ESIL_A ( \"?{,%\" PFMT64d \",pc,=,},\" , op -> jump ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; RAnalOp next_op = { 0 }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int vp9_compute_qdelta ( const RATE_CONTROL * rc , double qstart , double qtarget ) { <S2SV_EndBug> int start_index = rc -> worst_quality ; int target_index = rc -> worst_quality ; int i ; for ( i = rc -> best_quality ; i < rc -> worst_quality ; ++ i ) { start_index = i ; <S2SV_StartBug> if ( vp9_convert_qindex_to_q ( i ) >= qstart ) <S2SV_EndBug> break ; } for ( i = rc -> best_quality ; i < rc -> worst_quality ; ++ i ) { target_index = i ; <S2SV_StartBug> if ( vp9_convert_qindex_to_q ( i ) >= qtarget ) <S2SV_EndBug> break ; } return target_index - start_index ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , double qtarget , vpx_bit_depth_t bit_depth <S2SV_ModStart> vp9_convert_qindex_to_q ( i , bit_depth <S2SV_ModStart> vp9_convert_qindex_to_q ( i , bit_depth\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7533\n\n```\nCWE-362 struct dentry * debugfs_rename ( struct dentry * old_dir , struct dentry * old_dentry , struct dentry * new_dir , const char * new_name ) { int error ; struct dentry * dentry = NULL , * trap ; <S2SV_StartBug> const char * old_name ; <S2SV_EndBug> trap = lock_rename ( new_dir , old_dir ) ; if ( d_really_is_negative ( old_dir ) || d_really_is_negative ( new_dir ) ) goto exit ; if ( d_really_is_negative ( old_dentry ) || old_dentry == trap || d_mountpoint ( old_dentry ) ) goto exit ; dentry = lookup_one_len ( new_name , new_dir , strlen ( new_name ) ) ; if ( IS_ERR ( dentry ) || dentry == trap || d_really_is_positive ( dentry ) ) goto exit ; <S2SV_StartBug> old_name = fsnotify_oldname_init ( old_dentry -> d_name . name ) ; <S2SV_EndBug> error = simple_rename ( d_inode ( old_dir ) , old_dentry , d_inode ( new_dir ) , dentry , 0 ) ; if ( error ) { fsnotify_oldname_free ( old_name ) ; goto exit ; } d_move ( old_dentry , dentry ) ; fsnotify_move ( d_inode ( old_dir ) , d_inode ( new_dir ) , old_name , d_is_dir ( old_dentry ) , NULL , old_dentry ) ; <S2SV_StartBug> fsnotify_oldname_free ( old_name ) ; <S2SV_EndBug> unlock_rename ( new_dir , old_dir ) ; dput ( dentry ) ; return old_dentry ; exit : if ( dentry && ! IS_ERR ( dentry ) ) dput ( dentry ) ; unlock_rename ( new_dir , old_dir ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * trap ; struct name_snapshot <S2SV_ModEnd> old_name ; trap <S2SV_ModStart> goto exit ; take_dentry_name_snapshot ( & old_name , old_dentry ) ; error = simple_rename ( d_inode ( old_dir ) , old_dentry , d_inode ( new_dir ) , dentry , 0 ) ; if ( error ) { release_dentry_name_snapshot ( & old_name ) ; goto exit ; } d_move ( old_dentry , dentry ) ; fsnotify_move ( d_inode ( old_dir ) , d_inode ( new_dir ) , old_name . name <S2SV_ModEnd> , d_is_dir ( <S2SV_ModStart> old_dentry ) ; release_dentry_name_snapshot ( & <S2SV_ModEnd> old_name ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14175\n\n```\nCWE-834 <S2SV_StartBug> static unsigned int XBMInteger ( Image * image , short int * hex_digits ) <S2SV_EndBug> { int c ; unsigned int value ; do { c = ReadBlobByte ( image ) ; if ( c == EOF ) <S2SV_StartBug> return ( 0 ) ; <S2SV_EndBug> } while ( ( c == '<S2SV_blank>' ) || ( c == '\\\\t' ) || ( c == '\\\\n' ) || ( c == '\\\\r' ) ) ; value = 0 ; do { if ( value > ( unsigned int ) ( INT_MAX / 10 ) ) break ; value *= 16 ; c &= 0xff ; if ( value > ( unsigned int ) ( INT_MAX - hex_digits [ c ] ) ) break ; value += hex_digits [ c ] ; c = ReadBlobByte ( image ) ; if ( c == EOF ) <S2SV_StartBug> return ( 0 ) ; <S2SV_EndBug> } while ( hex_digits [ c ] >= 0 ) ; <S2SV_StartBug> return ( value ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static <S2SV_ModEnd> int XBMInteger ( <S2SV_ModStart> ) return ( - 1 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) return ( - 1 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; return ( ( int )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010065\n\n```\nCWE-190 uint8_t hfs_cat_traverse ( HFS_INFO * hfs , TSK_HFS_BTREE_CB a_cb , void * ptr ) { TSK_FS_INFO * fs = & ( hfs -> fs_info ) ; uint32_t cur_node ; char * node ; uint16_t nodesize ; uint8_t is_done = 0 ; tsk_error_reset ( ) ; nodesize = tsk_getu16 ( fs -> endian , hfs -> catalog_header . nodesize ) ; if ( ( node = ( char * ) tsk_malloc ( nodesize ) ) == NULL ) return 1 ; cur_node = tsk_getu32 ( fs -> endian , hfs -> catalog_header . rootNode ) ; if ( cur_node == 0 ) { if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>\" \"empty<S2SV_blank>extents<S2SV_blank>btree\\\\n\" ) ; free ( node ) ; return 1 ; } if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>starting<S2SV_blank>at<S2SV_blank>\" \"root<S2SV_blank>node<S2SV_blank>%\" PRIu32 \";<S2SV_blank>nodesize<S2SV_blank>=<S2SV_blank>%\" PRIu16 \"\\\\n\" , cur_node , nodesize ) ; is_done = 0 ; while ( is_done == 0 ) { TSK_OFF_T cur_off ; uint16_t num_rec ; ssize_t cnt ; hfs_btree_node * node_desc ; if ( cur_node > tsk_getu32 ( fs -> endian , hfs -> catalog_header . totalNodes ) ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>Node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>for<S2SV_blank>file\" , cur_node ) ; free ( node ) ; return 1 ; } cur_off = cur_node * nodesize ; cnt = tsk_fs_attr_read ( hfs -> catalog_attr , cur_off , node , nodesize , 0 ) ; if ( cnt != nodesize ) { if ( cnt >= 0 ) { tsk_error_reset ( ) ; tsk_error_set_errno ( TSK_ERR_FS_READ ) ; } tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Error<S2SV_blank>reading<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%\" PRIuOFF , cur_node , cur_off ) ; free ( node ) ; return 1 ; } if ( nodesize < sizeof ( hfs_btree_node ) ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>Node<S2SV_blank>size<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>to<S2SV_blank>be<S2SV_blank>valid\" , nodesize ) ; free ( node ) ; return 1 ; } node_desc = ( hfs_btree_node * ) node ; num_rec = tsk_getu16 ( fs -> endian , node_desc -> num_rec ) ; if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>node<S2SV_blank>%\" PRIu32 \"<S2SV_blank>@<S2SV_blank>%\" PRIu64 \"<S2SV_blank>has<S2SV_blank>%\" PRIu16 \"<S2SV_blank>records\\\\n\" , cur_node , cur_off , num_rec ) ; if ( num_rec == 0 ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>zero<S2SV_blank>records<S2SV_blank>in<S2SV_blank>node<S2SV_blank>%\" PRIu32 , cur_node ) ; free ( node ) ; return 1 ; } if ( node_desc -> type == HFS_BT_NODE_TYPE_IDX ) { uint32_t next_node = 0 ; int rec ; for ( rec = 0 ; rec < num_rec ; ++ rec ) { size_t rec_off ; hfs_btree_key_cat * key ; uint8_t retval ; <S2SV_StartBug> uint16_t keylen ; <S2SV_EndBug> rec_off = tsk_getu16 ( fs -> endian , & node [ nodesize - ( rec + 1 ) * 2 ] ) ; if ( rec_off > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off , nodesize ) ; free ( node ) ; return 1 ; } key = ( hfs_btree_key_cat * ) & node [ rec_off ] ; keylen = 2 + tsk_getu16 ( hfs -> fs_info . endian , key -> key_len ) ; if ( ( keylen ) > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , keylen , nodesize ) ; free ( node ) ; return 1 ; } retval = a_cb ( hfs , HFS_BT_NODE_TYPE_IDX , key , cur_off + rec_off , ptr ) ; if ( retval == HFS_BTREE_CB_ERR ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Callback<S2SV_blank>returned<S2SV_blank>error\" ) ; free ( node ) ; return 1 ; } else if ( ( retval == HFS_BTREE_CB_IDX_LT ) || ( next_node == 0 ) ) { hfs_btree_index_record * idx_rec ; int keylen = 2 + hfs_get_idxkeylen ( hfs , tsk_getu16 ( fs -> endian , key -> key_len ) , & ( hfs -> catalog_header ) ) ; if ( rec_off + keylen > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>and<S2SV_blank>keylength<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off + keylen , nodesize ) ; free ( node ) ; return 1 ; } idx_rec = ( hfs_btree_index_record * ) & node [ rec_off + keylen ] ; next_node = tsk_getu32 ( fs -> endian , idx_rec -> childNode ) ; } if ( retval == HFS_BTREE_CB_IDX_EQGT ) { break ; } } if ( next_node == 0 ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>did<S2SV_blank>not<S2SV_blank>find<S2SV_blank>any<S2SV_blank>keys<S2SV_blank>in<S2SV_blank>index<S2SV_blank>node<S2SV_blank>%d\" , cur_node ) ; is_done = 1 ; break ; } if ( next_node == cur_node ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>references<S2SV_blank>itself<S2SV_blank>as<S2SV_blank>next<S2SV_blank>node\" , cur_node ) ; is_done = 1 ; break ; } cur_node = next_node ; } else if ( node_desc -> type == HFS_BT_NODE_TYPE_LEAF ) { int rec ; for ( rec = 0 ; rec < num_rec ; ++ rec ) { size_t rec_off ; hfs_btree_key_cat * key ; uint8_t retval ; <S2SV_StartBug> uint16_t keylen ; <S2SV_EndBug> rec_off = tsk_getu16 ( fs -> endian , & node [ nodesize - ( rec + 1 ) * 2 ] ) ; if ( rec_off > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>offset<S2SV_blank>of<S2SV_blank>record<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>leaf<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , ( int ) rec_off , nodesize ) ; free ( node ) ; return 1 ; } key = ( hfs_btree_key_cat * ) & node [ rec_off ] ; keylen = 2 + tsk_getu16 ( hfs -> fs_info . endian , key -> key_len ) ; if ( ( keylen ) > nodesize ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>leaf<S2SV_blank>node<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%\" PRIu16 \")\" , rec , cur_node , keylen , nodesize ) ; free ( node ) ; return 1 ; } retval = a_cb ( hfs , HFS_BT_NODE_TYPE_LEAF , key , cur_off + rec_off , ptr ) ; if ( retval == HFS_BTREE_CB_LEAF_STOP ) { is_done = 1 ; break ; } else if ( retval == HFS_BTREE_CB_ERR ) { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr2 ( \"hfs_cat_traverse:<S2SV_blank>Callback<S2SV_blank>returned<S2SV_blank>error\" ) ; free ( node ) ; return 1 ; } } if ( is_done == 0 ) { cur_node = tsk_getu32 ( fs -> endian , node_desc -> flink ) ; if ( cur_node == 0 ) { is_done = 1 ; } if ( tsk_verbose ) tsk_fprintf ( stderr , \"hfs_cat_traverse:<S2SV_blank>moving<S2SV_blank>forward<S2SV_blank>to<S2SV_blank>next<S2SV_blank>leaf\" ) ; } } else { tsk_error_set_errno ( TSK_ERR_FS_GENFS ) ; tsk_error_set_errstr ( \"hfs_cat_traverse:<S2SV_blank>btree<S2SV_blank>node<S2SV_blank>%\" PRIu32 \"<S2SV_blank>(%\" PRIu64 \")<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>index<S2SV_blank>nor<S2SV_blank>leaf<S2SV_blank>(%\" PRIu8 \")\" , cur_node , cur_off , node_desc -> type ) ; free ( node ) ; return 1 ; } } free ( node ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8_t retval ; int <S2SV_ModEnd> keylen ; rec_off <S2SV_ModStart> uint8_t retval ; int <S2SV_ModEnd> keylen ; rec_off\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int sco_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sco_pinfo * pi = sco_pi ( sk ) ; lock_sock ( sk ) ; if ( sk -> sk_state == BT_CONNECT2 && test_bit ( BT_SK_DEFER_SETUP , & bt_sk ( sk ) -> flags ) ) { sco_conn_defer_accept ( pi -> conn -> hcon , pi -> setting ) ; sk -> sk_state = BT_CONFIG ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> release_sock ( sk ) ; return 0 ; } release_sock ( sk ) ; return bt_sock_recvmsg ( iocb , sock , msg , len , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = BT_CONFIG ; <S2SV_ModEnd> release_sock ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5576\n\n```\nCWE-190 static int vc4_get_bcl ( struct drm_device * dev , struct vc4_exec_info * exec ) { struct drm_vc4_submit_cl * args = exec -> args ; void * temp = NULL ; void * bin ; int ret = 0 ; uint32_t bin_offset = 0 ; uint32_t shader_rec_offset = roundup ( bin_offset + args -> bin_cl_size , 16 ) ; uint32_t uniforms_offset = shader_rec_offset + args -> shader_rec_size ; uint32_t exec_size = uniforms_offset + args -> uniforms_size ; uint32_t temp_size = exec_size + ( sizeof ( struct vc4_shader_state ) * args -> shader_rec_count ) ; struct vc4_bo * bo ; <S2SV_StartBug> if ( uniforms_offset < shader_rec_offset || <S2SV_EndBug> exec_size < uniforms_offset || args -> shader_rec_count >= ( UINT_MAX / sizeof ( struct vc4_shader_state ) ) || temp_size < exec_size ) { DRM_ERROR ( \"overflow<S2SV_blank>in<S2SV_blank>exec<S2SV_blank>arguments\\\\n\" ) ; goto fail ; } temp = drm_malloc_ab ( temp_size , 1 ) ; if ( ! temp ) { DRM_ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>storage<S2SV_blank>for<S2SV_blank>copying<S2SV_blank>\" \"in<S2SV_blank>bin/render<S2SV_blank>CLs.\\\\n\" ) ; ret = - ENOMEM ; goto fail ; } bin = temp + bin_offset ; exec -> shader_rec_u = temp + shader_rec_offset ; exec -> uniforms_u = temp + uniforms_offset ; exec -> shader_state = temp + exec_size ; exec -> shader_state_size = args -> shader_rec_count ; if ( copy_from_user ( bin , ( void __user * ) ( uintptr_t ) args -> bin_cl , args -> bin_cl_size ) ) { ret = - EFAULT ; goto fail ; } if ( copy_from_user ( exec -> shader_rec_u , ( void __user * ) ( uintptr_t ) args -> shader_rec , args -> shader_rec_size ) ) { ret = - EFAULT ; goto fail ; } if ( copy_from_user ( exec -> uniforms_u , ( void __user * ) ( uintptr_t ) args -> uniforms , args -> uniforms_size ) ) { ret = - EFAULT ; goto fail ; } bo = vc4_bo_create ( dev , exec_size , true ) ; if ( IS_ERR ( bo ) ) { DRM_ERROR ( \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>BO<S2SV_blank>for<S2SV_blank>binning\\\\n\" ) ; ret = PTR_ERR ( bo ) ; goto fail ; } exec -> exec_bo = & bo -> base ; list_add_tail ( & to_vc4_bo ( & exec -> exec_bo -> base ) -> unref_head , & exec -> unref_list ) ; exec -> ct0ca = exec -> exec_bo -> paddr + bin_offset ; exec -> bin_u = bin ; exec -> shader_rec_v = exec -> exec_bo -> vaddr + shader_rec_offset ; exec -> shader_rec_p = exec -> exec_bo -> paddr + shader_rec_offset ; exec -> shader_rec_size = args -> shader_rec_size ; exec -> uniforms_v = exec -> exec_bo -> vaddr + uniforms_offset ; exec -> uniforms_p = exec -> exec_bo -> paddr + uniforms_offset ; exec -> uniforms_size = args -> uniforms_size ; ret = vc4_validate_bin_cl ( dev , exec -> exec_bo -> vaddr + bin_offset , bin , exec ) ; if ( ret ) goto fail ; ret = vc4_validate_shader_recs ( dev , exec ) ; if ( ret ) goto fail ; ret = vc4_wait_for_seqno ( dev , exec -> bin_dep_seqno , ~ 0ull , true ) ; fail : drm_free_large ( temp ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( shader_rec_offset < args -> bin_cl_size ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4312\n\n```\nCWE-119 void unix_inflight ( struct file * fp ) { struct sock * s = unix_get_socket ( fp ) ; <S2SV_StartBug> if ( s ) { <S2SV_EndBug> <S2SV_StartBug> struct unix_sock * u = unix_sk ( s ) ; <S2SV_EndBug> spin_lock ( & unix_gc_lock ) ; if ( atomic_long_inc_return ( & u -> inflight ) == 1 ) { BUG_ON ( ! list_empty ( & u -> link ) ) ; list_add_tail ( & u -> link , & gc_inflight_list ) ; } else { BUG_ON ( list_empty ( & u -> link ) ) ; } unix_tot_inflight ++ ; <S2SV_StartBug> spin_unlock ( & unix_gc_lock ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fp ) ; spin_lock ( & unix_gc_lock ) ; <S2SV_ModStart> unix_sk ( s <S2SV_ModEnd> ) ; if <S2SV_ModStart> unix_tot_inflight ++ ; } fp -> f_cred -> user -> unix_inflight ++ ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static struct sock * dccp_v6_request_recv_sock ( struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst ) { struct inet6_request_sock * ireq6 = inet6_rsk ( req ) ; struct ipv6_pinfo * newnp , * np = inet6_sk ( sk ) ; struct inet_sock * newinet ; struct dccp6_sock * newdp6 ; struct sock * newsk ; struct ipv6_txoptions * opt ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = dccp_v4_request_recv_sock ( sk , skb , req , dst ) ; if ( newsk == NULL ) return NULL ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; ipv6_addr_set_v4mapped ( newinet -> inet_daddr , & newnp -> daddr ) ; ipv6_addr_set_v4mapped ( newinet -> inet_saddr , & newnp -> saddr ) ; ipv6_addr_copy ( & newnp -> rcv_saddr , & newnp -> saddr ) ; inet_csk ( newsk ) -> icsk_af_ops = & dccp_ipv6_mapped ; newsk -> sk_backlog_rcv = dccp_v4_do_rcv ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; dccp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } opt = np -> opt ; if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( dst == NULL ) { struct in6_addr * final_p , final ; struct flowi6 fl6 ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_proto = IPPROTO_DCCP ; ipv6_addr_copy ( & fl6 . daddr , & ireq6 -> rmt_addr ) ; final_p = fl6_update_dst ( & fl6 , opt , & final ) ; ipv6_addr_copy ( & fl6 . saddr , & ireq6 -> loc_addr ) ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . fl6_dport = inet_rsk ( req ) -> rmt_port ; fl6 . fl6_sport = inet_rsk ( req ) -> loc_port ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p , false ) ; if ( IS_ERR ( dst ) ) goto out ; } newsk = dccp_create_openreq_child ( sk , req , skb ) ; if ( newsk == NULL ) goto out_nonewsk ; __ip6_dst_store ( newsk , dst , NULL , NULL ) ; newsk -> sk_route_caps = dst -> dev -> features & ~ ( NETIF_F_IP_CSUM | NETIF_F_TSO ) ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; ipv6_addr_copy ( & newnp -> daddr , & ireq6 -> rmt_addr ) ; ipv6_addr_copy ( & newnp -> saddr , & ireq6 -> loc_addr ) ; ipv6_addr_copy ( & newnp -> rcv_saddr , & ireq6 -> loc_addr ) ; newsk -> sk_bound_dev_if = ireq6 -> iif ; <S2SV_StartBug> newinet -> opt = NULL ; <S2SV_EndBug> newnp -> rxopt . all = np -> rxopt . all ; newnp -> pktoptions = NULL ; if ( ireq6 -> pktopts != NULL ) { newnp -> pktoptions = skb_clone ( ireq6 -> pktopts , GFP_ATOMIC ) ; kfree_skb ( ireq6 -> pktopts ) ; ireq6 -> pktopts = NULL ; if ( newnp -> pktoptions ) skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; if ( opt != NULL ) { newnp -> opt = ipv6_dup_options ( newsk , opt ) ; if ( opt != np -> opt ) sock_kfree_s ( sk , opt , opt -> tot_len ) ; } inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( newnp -> opt != NULL ) inet_csk ( newsk ) -> icsk_ext_hdr_len = ( newnp -> opt -> opt_nflen + newnp -> opt -> opt_flen ) ; dccp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; if ( __inet_inherit_port ( sk , newsk ) < 0 ) { sock_put ( newsk ) ; goto out ; } __inet6_hash ( newsk , NULL ) ; return newsk ; out_overflow : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; if ( opt != NULL && opt != np -> opt ) sock_kfree_s ( sk , opt , opt -> tot_len ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; newinet -> inet_opt <S2SV_ModEnd> = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0206\n\n```\nCWE-119 int dtls1_get_record ( SSL * s ) { int ssl_major , ssl_minor ; int i , n ; SSL3_RECORD * rr ; unsigned char * p = NULL ; unsigned short version ; DTLS1_BITMAP * bitmap ; unsigned int is_next_epoch ; rr = & ( s -> s3 -> rrec ) ; <S2SV_StartBug> dtls1_process_buffered_records ( s ) ; <S2SV_EndBug> if ( dtls1_get_processed_record ( s ) ) return 1 ; again : if ( ( s -> rstate != SSL_ST_READ_BODY ) || ( s -> packet_length < DTLS1_RT_HEADER_LENGTH ) ) { n = ssl3_read_n ( s , DTLS1_RT_HEADER_LENGTH , s -> s3 -> rbuf . len , 0 ) ; if ( n <= 0 ) return ( n ) ; if ( s -> packet_length != DTLS1_RT_HEADER_LENGTH ) { s -> packet_length = 0 ; goto again ; } s -> rstate = SSL_ST_READ_BODY ; p = s -> packet ; if ( s -> msg_callback ) s -> msg_callback ( 0 , 0 , SSL3_RT_HEADER , p , DTLS1_RT_HEADER_LENGTH , s , s -> msg_callback_arg ) ; rr -> type = * ( p ++ ) ; ssl_major = * ( p ++ ) ; ssl_minor = * ( p ++ ) ; version = ( ssl_major << 8 ) | ssl_minor ; n2s ( p , rr -> epoch ) ; memcpy ( & ( s -> s3 -> read_sequence [ 2 ] ) , p , 6 ) ; p += 6 ; n2s ( p , rr -> length ) ; if ( ! s -> first_packet ) { if ( version != s -> version ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( ( version & 0xff00 ) != ( s -> version & 0xff00 ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( rr -> length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( rr -> length > s -> packet_length - DTLS1_RT_HEADER_LENGTH ) { i = rr -> length ; n = ssl3_read_n ( s , i , i , 1 ) ; if ( n != i ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } s -> rstate = SSL_ST_READ_HEADER ; bitmap = dtls1_get_bitmap ( s , rr , & is_next_epoch ) ; if ( bitmap == NULL ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP if ( ! BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) ) { # endif if ( ! ( s -> d1 -> listen && rr -> type == SSL3_RT_HANDSHAKE && s -> packet_length > DTLS1_RT_HEADER_LENGTH && s -> packet [ DTLS1_RT_HEADER_LENGTH ] == SSL3_MT_CLIENT_HELLO ) && ! dtls1_record_replay_check ( s , bitmap ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP } # endif if ( rr -> length == 0 ) goto again ; if ( is_next_epoch ) { if ( ( SSL_in_init ( s ) || s -> in_handshake ) && ! s -> d1 -> listen ) { <S2SV_StartBug> dtls1_buffer_record ( s , & ( s -> d1 -> unprocessed_rcds ) , rr -> seq_num ) ; <S2SV_EndBug> } rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( ! dtls1_process_record ( s ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } <S2SV_StartBug> return ( 1 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rrec ) ; if ( <S2SV_ModStart> ( s ) < 0 ) return - 1 <S2SV_ModStart> listen ) { if ( <S2SV_ModStart> rr -> seq_num ) < 0 ) return - 1 ; dtls1_record_bitmap_update ( s , bitmap <S2SV_ModStart> again ; } dtls1_record_bitmap_update ( s , bitmap ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 struct ipv6_txoptions * ipv6_dup_options ( struct sock * sk , struct ipv6_txoptions * opt ) { struct ipv6_txoptions * opt2 ; opt2 = sock_kmalloc ( sk , opt -> tot_len , GFP_ATOMIC ) ; if ( opt2 ) { long dif = ( char * ) opt2 - ( char * ) opt ; memcpy ( opt2 , opt , opt -> tot_len ) ; if ( opt2 -> hopopt ) * ( ( char * * ) & opt2 -> hopopt ) += dif ; if ( opt2 -> dst0opt ) * ( ( char * * ) & opt2 -> dst0opt ) += dif ; if ( opt2 -> dst1opt ) * ( ( char * * ) & opt2 -> dst1opt ) += dif ; if ( opt2 -> srcrt ) * ( ( char * * ) & opt2 -> srcrt ) += dif ; <S2SV_StartBug> } <S2SV_EndBug> return opt2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += dif ; atomic_set ( & opt2 -> refcnt , 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Pairs * hstoreArrayToPairs ( ArrayType * a , int * npairs ) { Datum * key_datums ; bool * key_nulls ; int key_count ; Pairs * key_pairs ; int bufsiz ; int i , j ; deconstruct_array ( a , TEXTOID , - 1 , false , 'i' , & key_datums , & key_nulls , & key_count ) ; if ( key_count == 0 ) { * npairs = 0 ; return NULL ; } <S2SV_StartBug> key_pairs = palloc ( sizeof ( Pairs ) * key_count ) ; <S2SV_EndBug> for ( i = 0 , j = 0 ; i < key_count ; i ++ ) { if ( ! key_nulls [ i ] ) { key_pairs [ j ] . key = VARDATA ( key_datums [ i ] ) ; key_pairs [ j ] . keylen = VARSIZE ( key_datums [ i ] ) - VARHDRSZ ; key_pairs [ j ] . val = NULL ; key_pairs [ j ] . vallen = 0 ; key_pairs [ j ] . needfree = 0 ; key_pairs [ j ] . isnull = 1 ; j ++ ; } } * npairs = hstoreUniquePairs ( key_pairs , j , & bufsiz ) ; return key_pairs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } if ( key_count > MaxAllocSize / sizeof ( Pairs ) ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"number<S2SV_blank>of<S2SV_blank>pairs<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>allowed<S2SV_blank>(%d)\" , key_count , ( int ) ( MaxAllocSize / sizeof ( Pairs ) ) ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void nonrd_use_partition ( VP9_COMP * cpi , <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> <S2SV_StartBug> MODE_INFO * * mi_8x8 , <S2SV_EndBug> TOKENEXTRA * * tp , int mi_row , int mi_col , BLOCK_SIZE bsize , int output_enabled , <S2SV_StartBug> int * totrate , int64_t * totdist ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> const int bsl = b_width_log2 ( bsize ) , hbs = ( 1 << bsl ) / 4 ; <S2SV_EndBug> const int mis = cm -> mi_stride ; PARTITION_TYPE partition ; BLOCK_SIZE subsize ; <S2SV_StartBug> int rate = INT_MAX ; <S2SV_EndBug> int64_t dist = INT64_MAX ; if ( mi_row >= cm -> mi_rows || mi_col >= cm -> mi_cols ) return ; <S2SV_StartBug> subsize = ( bsize >= BLOCK_8X8 ) ? mi_8x8 [ 0 ] -> mbmi . sb_type : BLOCK_4X4 ; <S2SV_EndBug> partition = partition_lookup [ bsl ] [ subsize ] ; <S2SV_StartBug> switch ( partition ) { <S2SV_EndBug> case PARTITION_NONE : <S2SV_StartBug> nonrd_pick_sb_modes ( cpi , tile , mi_row , mi_col , totrate , totdist , subsize ) ; <S2SV_EndBug> <S2SV_StartBug> get_block_context ( x , subsize ) -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> break ; case PARTITION_VERT : <S2SV_StartBug> * get_sb_index ( x , subsize ) = 0 ; <S2SV_EndBug> <S2SV_StartBug> nonrd_pick_sb_modes ( cpi , tile , mi_row , mi_col , totrate , totdist , subsize ) ; <S2SV_EndBug> <S2SV_StartBug> get_block_context ( x , subsize ) -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> <S2SV_StartBug> if ( mi_col + hbs < cm -> mi_cols ) { <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; <S2SV_StartBug> nonrd_pick_sb_modes ( cpi , tile , mi_row , mi_col + hbs , <S2SV_EndBug> & rate , & dist , subsize ) ; get_block_context ( x , subsize ) -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> if ( rate != INT_MAX && dist != INT64_MAX && <S2SV_EndBug> * totrate != INT_MAX && * totdist != INT64_MAX ) { * totrate += rate ; * totdist += dist ; } } break ; case PARTITION_HORZ : <S2SV_StartBug> * get_sb_index ( x , subsize ) = 0 ; <S2SV_EndBug> <S2SV_StartBug> nonrd_pick_sb_modes ( cpi , tile , mi_row , mi_col , totrate , totdist , subsize ) ; <S2SV_EndBug> <S2SV_StartBug> get_block_context ( x , subsize ) -> mic . mbmi = xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> <S2SV_StartBug> if ( mi_row + hbs < cm -> mi_rows ) { <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; <S2SV_StartBug> nonrd_pick_sb_modes ( cpi , tile , mi_row + hbs , mi_col , <S2SV_EndBug> & rate , & dist , subsize ) ; <S2SV_StartBug> get_block_context ( x , subsize ) -> mic . mbmi = mi_8x8 [ 0 ] -> mbmi ; <S2SV_EndBug> <S2SV_StartBug> if ( rate != INT_MAX && dist != INT64_MAX && <S2SV_EndBug> * totrate != INT_MAX && * totdist != INT64_MAX ) { * totrate += rate ; * totdist += dist ; } } break ; case PARTITION_SPLIT : subsize = get_subsize ( bsize , PARTITION_SPLIT ) ; <S2SV_StartBug> * get_sb_index ( x , subsize ) = 0 ; <S2SV_EndBug> <S2SV_StartBug> nonrd_use_partition ( cpi , tile , mi_8x8 , tp , mi_row , mi_col , <S2SV_EndBug> <S2SV_StartBug> subsize , output_enabled , totrate , totdist ) ; <S2SV_EndBug> * get_sb_index ( x , subsize ) = 1 ; <S2SV_StartBug> nonrd_use_partition ( cpi , tile , mi_8x8 + hbs , tp , <S2SV_EndBug> mi_row , mi_col + hbs , subsize , output_enabled , <S2SV_StartBug> & rate , & dist ) ; <S2SV_EndBug> if ( rate != INT_MAX && dist != INT64_MAX && * totrate != INT_MAX && * totdist != INT64_MAX ) { * totrate += rate ; * totdist += dist ; } * get_sb_index ( x , subsize ) = 2 ; <S2SV_StartBug> nonrd_use_partition ( cpi , tile , mi_8x8 + hbs * mis , tp , <S2SV_EndBug> <S2SV_StartBug> mi_row + hbs , mi_col , subsize , output_enabled , <S2SV_EndBug> <S2SV_StartBug> & rate , & dist ) ; <S2SV_EndBug> if ( rate != INT_MAX && dist != INT64_MAX && * totrate != INT_MAX && * totdist != INT64_MAX ) { * totrate += rate ; * totdist += dist ; } * get_sb_index ( x , subsize ) = 3 ; nonrd_use_partition ( cpi , tile , mi_8x8 + hbs * mis + hbs , tp , mi_row + hbs , mi_col + hbs , subsize , output_enabled , & rate , & dist ) ; if ( rate != INT_MAX && dist != INT64_MAX && * totrate != INT_MAX && * totdist != INT64_MAX ) { * totrate += rate ; * totdist += dist ; } break ; default : <S2SV_StartBug> assert ( \"Invalid<S2SV_blank>partition<S2SV_blank>type.\" ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> if ( bsize == BLOCK_64X64 && output_enabled ) { <S2SV_EndBug> if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) vp9_cyclic_refresh_set_rate_and_dist_sb ( cpi -> cyclic_refresh , * totrate , * totdist ) ; encode_sb_rt ( cpi , tile , tp , mi_row , mi_col , 1 , bsize ) ; <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , TileDataEnc * tile_data <S2SV_ModEnd> , MODE_INFO * <S2SV_ModStart> MODE_INFO * * mi <S2SV_ModEnd> , TOKENEXTRA * <S2SV_ModStart> int output_enabled , RD_COST * dummy_cost , PC_TREE * pc_tree <S2SV_ModEnd> ) { VP9_COMMON <S2SV_ModStart> -> common ; TileInfo * tile_info = & tile_data -> tile_info ; <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> int bsl = b_width_log2_lookup [ bsize ] <S2SV_ModEnd> , hbs = <S2SV_ModStart> BLOCK_SIZE subsize ; <S2SV_ModEnd> if ( mi_row <S2SV_ModStart> BLOCK_8X8 ) ? mi <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> subsize ] ; if ( output_enabled && bsize != BLOCK_4X4 ) { int ctx = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; td -> counts -> partition [ ctx ] [ partition ] ++ ; } <S2SV_ModStart> case PARTITION_NONE : pc_tree -> none . pred_pixel_ready = 1 ; <S2SV_ModStart> ( cpi , tile_data , x , mi_row , mi_col , dummy_cost , subsize , & pc_tree -> none ) ; pc_tree -> none . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> ] -> mbmi ; pc_tree -> none . mbmi_ext = * x -> mbmi_ext ; pc_tree -> none . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> none . skip = x -> skip ; encode_b_rt ( cpi , td , tile_info , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> none ) <S2SV_ModStart> case PARTITION_VERT : pc_tree -> vertical [ 0 ] . pred_pixel_ready = 1 <S2SV_ModEnd> ; nonrd_pick_sb_modes ( <S2SV_ModStart> ( cpi , tile_data , x , mi_row , mi_col , dummy_cost , subsize , & pc_tree -> vertical [ 0 ] ) ; pc_tree -> vertical [ 0 ] . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> ] -> mbmi ; pc_tree -> vertical [ 0 ] . mbmi_ext = * x -> mbmi_ext ; pc_tree -> vertical [ 0 ] . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> vertical [ 0 ] . skip = x -> skip ; encode_b_rt ( cpi , td , tile_info , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> vertical [ 0 ] ) <S2SV_ModStart> cm -> mi_cols && bsize > BLOCK_8X8 ) { pc_tree -> vertical [ 1 ] . pred_pixel_ready <S2SV_ModEnd> = 1 ; <S2SV_ModStart> ( cpi , tile_data , x , mi_row , mi_col + hbs , dummy_cost , subsize , & pc_tree -> vertical [ 1 ] ) ; pc_tree -> vertical [ 1 ] . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> -> mbmi ; pc_tree -> vertical [ 1 ] . mbmi_ext = * x -> mbmi_ext ; pc_tree -> vertical [ 1 ] . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> vertical [ 1 ] . skip = x -> skip ; encode_b_rt ( cpi , td , tile_info , tp , mi_row , mi_col + hbs , output_enabled , subsize , & pc_tree -> vertical [ 1 ] ) ; <S2SV_ModEnd> } break ; <S2SV_ModStart> case PARTITION_HORZ : pc_tree -> horizontal [ 0 ] . pred_pixel_ready = 1 <S2SV_ModEnd> ; nonrd_pick_sb_modes ( <S2SV_ModStart> ( cpi , tile_data , x , mi_row , mi_col , dummy_cost , subsize , & pc_tree -> horizontal [ 0 ] ) ; pc_tree -> horizontal [ 0 ] . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> ] -> mbmi ; pc_tree -> horizontal [ 0 ] . mbmi_ext = * x -> mbmi_ext ; pc_tree -> horizontal [ 0 ] . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> horizontal [ 0 ] . skip = x -> skip ; encode_b_rt ( cpi , td , tile_info , tp , mi_row , mi_col , output_enabled , subsize , & pc_tree -> horizontal [ 0 ] ) <S2SV_ModStart> cm -> mi_rows && bsize > BLOCK_8X8 ) { pc_tree -> horizontal [ 1 ] . pred_pixel_ready <S2SV_ModEnd> = 1 ; <S2SV_ModStart> ( cpi , tile_data , x , mi_row + hbs , mi_col , dummy_cost , subsize , & pc_tree -> horizontal [ 1 ] ) ; pc_tree -> horizontal [ 1 ] . <S2SV_ModEnd> mic . mbmi <S2SV_ModStart> . mbmi = xd -> mi <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> -> mbmi ; pc_tree -> horizontal [ 1 ] . mbmi_ext = * x -> mbmi_ext ; pc_tree -> horizontal [ 1 ] . skip_txfm [ 0 ] = x -> skip_txfm [ 0 ] ; pc_tree -> horizontal [ 1 ] . skip = x -> skip ; encode_b_rt ( cpi , td , tile_info , tp , mi_row + hbs , mi_col , output_enabled , subsize , & pc_tree -> horizontal [ 1 ] ) ; <S2SV_ModEnd> } break ; <S2SV_ModStart> PARTITION_SPLIT ) ; if ( bsize == BLOCK_8X8 ) { nonrd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , dummy_cost , subsize , pc_tree -> leaf_split [ 0 ] ) ; encode_b_rt ( cpi , td , tile_info , tp , mi_row , mi_col , output_enabled , subsize , pc_tree -> leaf_split [ 0 ] ) ; } else { <S2SV_ModEnd> nonrd_use_partition ( cpi <S2SV_ModStart> ( cpi , td , tile_data , mi <S2SV_ModEnd> , tp , <S2SV_ModStart> , output_enabled , dummy_cost , pc_tree -> split [ 0 ] ) <S2SV_ModEnd> ; nonrd_use_partition ( <S2SV_ModStart> ( cpi , td , tile_data , mi <S2SV_ModEnd> + hbs , <S2SV_ModStart> , output_enabled , dummy_cost , pc_tree -> split [ 1 ] ) ; nonrd_use_partition ( cpi , td , tile_data , mi + hbs * mis , tp , mi_row + hbs , mi_col , subsize , output_enabled , dummy_cost , pc_tree -> split [ 2 ] ) <S2SV_ModEnd> ; nonrd_use_partition ( <S2SV_ModStart> ( cpi , td , tile_data , mi <S2SV_ModEnd> + hbs * <S2SV_ModStart> hbs * mis + hbs <S2SV_ModStart> hbs , mi_col + hbs <S2SV_ModStart> , output_enabled , dummy_cost , pc_tree -> split [ 3 ] ) <S2SV_ModEnd> ; } break <S2SV_ModStart> : assert ( 0 && <S2SV_ModStart> \"Invalid<S2SV_blank>partition<S2SV_blank>type.\" ) ; break ; <S2SV_ModStart> } if ( partition != PARTITION_SPLIT || bsize == BLOCK_8X8 ) update_partition_context ( xd , mi_row , mi_col , subsize <S2SV_ModEnd> , bsize ) <S2SV_ModStart> bsize ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9228\n\n```\nCWE-787 static int next_state_class ( CClassNode * cc , OnigCodePoint * vs , enum CCVALTYPE * type , enum CCSTATE * state , ScanEnv * env ) { int r ; if ( * state == CCS_RANGE ) return ONIGERR_CHAR_CLASS_VALUE_AT_END_OF_RANGE ; if ( * state == CCS_VALUE && * type != CCV_CLASS ) { if ( * type == CCV_SB ) BITSET_SET_BIT ( cc -> bs , ( int ) ( * vs ) ) ; else if ( * type == CCV_CODE_POINT ) { r = add_code_range ( & ( cc -> mbuf ) , env , * vs , * vs ) ; if ( r < 0 ) return r ; } } <S2SV_StartBug> * state = CCS_VALUE ; <S2SV_EndBug> * type = CCV_CLASS ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( * state != CCS_START )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9391\n\n```\nCWE-000 int jpc_bitstream_putbits ( jpc_bitstream_t * bitstream , int n , long v ) { int m ; <S2SV_StartBug> assert ( n >= 0 && n < 32 ) ; <S2SV_EndBug> assert ( ! ( v & ( ~ JAS_ONES ( n ) ) ) ) ; m = n - 1 ; while ( -- n >= 0 ) { if ( jpc_bitstream_putbit ( bitstream , ( v >> m ) & 1 ) == EOF ) { return EOF ; } v <<= 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int m ; if ( n < 0 || n >= 32 ) { return EOF ; } <S2SV_ModEnd> assert ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-000 static int crypto_report_cipher ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_cipher rcipher ; <S2SV_StartBug> strlcpy ( rcipher . type , \"cipher\" , sizeof ( rcipher . type ) ) ; <S2SV_EndBug> rcipher . blocksize = alg -> cra_blocksize ; rcipher . min_keysize = alg -> cra_cipher . cia_min_keysize ; rcipher . max_keysize = alg -> cra_cipher . cia_max_keysize ; if ( nla_put ( skb , CRYPTOCFGA_REPORT_CIPHER , sizeof ( struct crypto_report_cipher ) , & rcipher ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_cipher rcipher ; strncpy <S2SV_ModEnd> ( rcipher .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3364\n\n```\nCWE-119 static __u8 * nci_extract_rf_params_nfcb_passive_poll ( struct nci_dev * ndev , struct rf_tech_specific_params_nfcb_poll * nfcb_poll , __u8 * data ) { <S2SV_StartBug> nfcb_poll -> sensb_res_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"sensb_res_len<S2SV_blank>%d\\\\n\" , nfcb_poll -> sensb_res_len ) ; memcpy ( nfcb_poll -> sensb_res , data , nfcb_poll -> sensb_res_len ) ; data += nfcb_poll -> sensb_res_len ; return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sensb_res_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , NFC_SENSB_RES_MAXSIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11171\n\n```\nCWE-835 static Status accept_xsmp_connection ( SmsConn sms_conn , GsmXsmpServer * server , unsigned long * mask_ret , SmsCallbacks * callbacks_ret , char * * failure_reason_ret ) { IceConn ice_conn ; <S2SV_StartBug> GsmXSMPClient * client ; <S2SV_EndBug> if ( server -> priv -> xsmp_sockets == NULL ) { g_debug ( \"GsmXsmpServer:<S2SV_blank>In<S2SV_blank>shutdown,<S2SV_blank>rejecting<S2SV_blank>new<S2SV_blank>client\" ) ; * failure_reason_ret = strdup ( _ ( \"Refusing<S2SV_blank>new<S2SV_blank>client<S2SV_blank>connection<S2SV_blank>because<S2SV_blank>the<S2SV_blank>session<S2SV_blank>is<S2SV_blank>currently<S2SV_blank>being<S2SV_blank>shut<S2SV_blank>down\\\\n\" ) ) ; return FALSE ; } ice_conn = SmsGetIceConnection ( sms_conn ) ; <S2SV_StartBug> client = ice_conn -> context ; <S2SV_EndBug> <S2SV_StartBug> g_return_val_if_fail ( client != NULL , TRUE ) ; <S2SV_EndBug> <S2SV_StartBug> gsm_xsmp_client_connect ( client , sms_conn , mask_ret , callbacks_ret ) ; <S2SV_EndBug> return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IceConn ice_conn ; GsmClient * client ; GsmIceConnectionWatch * data <S2SV_ModEnd> ; if ( <S2SV_ModStart> sms_conn ) ; data <S2SV_ModEnd> = ice_conn -> <S2SV_ModStart> -> context ; free_ice_connection_watch ( data ) ; client = gsm_xsmp_client_new ( ice_conn ) ; gsm_store_add ( server -> priv -> client_store , gsm_client_peek_id ( client ) , G_OBJECT ( client ) ) ; g_object_unref ( client <S2SV_ModEnd> ) ; gsm_xsmp_client_connect <S2SV_ModStart> ; gsm_xsmp_client_connect ( GSM_XSMP_CLIENT ( client ) <S2SV_ModEnd> , sms_conn ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6491\n\n```\nCWE-125 static MagickBooleanType Get8BIMProperty ( const Image * image , const char * key , ExceptionInfo * exception ) { char * attribute , format [ MagickPathExtent ] , name [ MagickPathExtent ] , * resource ; const StringInfo * profile ; const unsigned char * info ; long start , stop ; MagickBooleanType status ; register ssize_t i ; size_t length ; ssize_t count , id , sub_number ; profile = GetImageProfile ( image , \"8bim\" ) ; if ( profile == ( StringInfo * ) NULL ) return ( MagickFalse ) ; count = ( ssize_t ) sscanf ( key , \"8BIM:%ld,%ld:%1024[^\\\\n]\\\\n%1024[^\\\\n]\" , & start , & stop , name , format ) ; if ( ( count != 2 ) && ( count != 3 ) && ( count != 4 ) ) return ( MagickFalse ) ; if ( count < 4 ) ( void ) CopyMagickString ( format , \"SVG\" , MagickPathExtent ) ; if ( count < 3 ) * name = '\\\\0' ; sub_number = 1 ; if ( * name == '#' ) sub_number = ( ssize_t ) StringToLong ( & name [ 1 ] ) ; sub_number = MagickMax ( sub_number , 1L ) ; resource = ( char * ) NULL ; status = MagickFalse ; length = GetStringInfoLength ( profile ) ; info = GetStringInfoDatum ( profile ) ; while ( ( length > 0 ) && ( status == MagickFalse ) ) { if ( ReadPropertyByte ( & info , & length ) != ( unsigned char ) '8' ) continue ; if ( ReadPropertyByte ( & info , & length ) != ( unsigned char ) 'B' ) continue ; if ( ReadPropertyByte ( & info , & length ) != ( unsigned char ) 'I' ) continue ; if ( ReadPropertyByte ( & info , & length ) != ( unsigned char ) 'M' ) continue ; id = ( ssize_t ) ReadPropertyMSBShort ( & info , & length ) ; if ( id < ( ssize_t ) start ) continue ; if ( id > ( ssize_t ) stop ) continue ; if ( resource != ( char * ) NULL ) resource = DestroyString ( resource ) ; count = ( ssize_t ) ReadPropertyByte ( & info , & length ) ; if ( ( count != 0 ) && ( ( size_t ) count <= length ) ) { resource = ( char * ) NULL ; if ( ~ ( ( size_t ) count ) >= ( MagickPathExtent - 1 ) ) resource = ( char * ) AcquireQuantumMemory ( ( size_t ) count + MagickPathExtent , sizeof ( * resource ) ) ; if ( resource != ( char * ) NULL ) { for ( i = 0 ; i < ( ssize_t ) count ; i ++ ) resource [ i ] = ( char ) ReadPropertyByte ( & info , & length ) ; resource [ count ] = '\\\\0' ; } } if ( ( count & 0x01 ) == 0 ) ( void ) ReadPropertyByte ( & info , & length ) ; count = ( ssize_t ) ReadPropertyMSBLong ( & info , & length ) ; <S2SV_StartBug> if ( ( * name != '\\\\0' ) && ( * name != '#' ) ) <S2SV_EndBug> if ( ( resource == ( char * ) NULL ) || ( LocaleCompare ( name , resource ) != 0 ) ) { info += count ; length -= MagickMin ( count , ( ssize_t ) length ) ; continue ; } if ( ( * name == '#' ) && ( sub_number != 1 ) ) { sub_number -- ; info += count ; length -= MagickMin ( count , ( ssize_t ) length ) ; continue ; } attribute = ( char * ) NULL ; if ( ~ ( ( size_t ) count ) >= ( MagickPathExtent - 1 ) ) attribute = ( char * ) AcquireQuantumMemory ( ( size_t ) count + MagickPathExtent , sizeof ( * attribute ) ) ; if ( attribute != ( char * ) NULL ) { ( void ) CopyMagickMemory ( attribute , ( char * ) info , ( size_t ) count ) ; attribute [ count ] = '\\\\0' ; info += count ; length -= MagickMin ( count , ( ssize_t ) length ) ; if ( ( id <= 1999 ) || ( id >= 2999 ) ) ( void ) SetImageProperty ( ( Image * ) image , key , ( const char * ) attribute , exception ) ; else { char * path ; if ( LocaleCompare ( format , \"svg\" ) == 0 ) path = TraceSVGClippath ( ( unsigned char * ) attribute , ( size_t ) count , image -> columns , image -> rows ) ; else path = TracePSClippath ( ( unsigned char * ) attribute , ( size_t ) count ) ; ( void ) SetImageProperty ( ( Image * ) image , key , ( const char * ) path , exception ) ; path = DestroyString ( path ) ; } attribute = DestroyString ( attribute ) ; status = MagickTrue ; } } if ( resource != ( char * ) NULL ) resource = DestroyString ( resource ) ; return ( status ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( count < 0 ) || ( ( size_t ) count > length ) ) { length = 0 ; continue ; } if ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void fadst4 ( const int16_t * input , int16_t * output ) { <S2SV_EndBug> <S2SV_StartBug> int x0 , x1 , x2 , x3 ; <S2SV_EndBug> int s0 , s1 , s2 , s3 , s4 , s5 , s6 , s7 ; x0 = input [ 0 ] ; x1 = input [ 1 ] ; x2 = input [ 2 ] ; x3 = input [ 3 ] ; if ( ! ( x0 | x1 | x2 | x3 ) ) { output [ 0 ] = output [ 1 ] = output [ 2 ] = output [ 3 ] = 0 ; return ; } s0 = sinpi_1_9 * x0 ; s1 = sinpi_4_9 * x0 ; s2 = sinpi_2_9 * x1 ; s3 = sinpi_1_9 * x1 ; s4 = sinpi_3_9 * x2 ; s5 = sinpi_4_9 * x3 ; s6 = sinpi_2_9 * x3 ; s7 = x0 + x1 - x3 ; x0 = s0 + s2 + s5 ; x1 = sinpi_3_9 * s7 ; x2 = s1 - s3 + s6 ; x3 = s4 ; s0 = x0 + x3 ; s1 = x1 ; s2 = x2 - x3 ; s3 = x2 - x0 + x3 ; <S2SV_StartBug> output [ 0 ] = fdct_round_shift ( s0 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 1 ] = fdct_round_shift ( s1 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 2 ] = fdct_round_shift ( s2 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 3 ] = fdct_round_shift ( s3 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fadst4 ( const tran_low_t * input , tran_low_t <S2SV_ModEnd> * output ) <S2SV_ModStart> output ) { tran_high_t x0 , x1 , x2 , x3 ; tran_high_t <S2SV_ModEnd> s0 , s1 <S2SV_ModStart> 0 ] = ( tran_low_t ) <S2SV_ModStart> 1 ] = ( tran_low_t ) <S2SV_ModStart> 2 ] = ( tran_low_t ) <S2SV_ModStart> 3 ] = ( tran_low_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7416\n\n```\nCWE-119 PHP_FUNCTION ( msgfmt_format_message ) { zval * args ; UChar * spattern = NULL ; int spattern_len = 0 ; char * pattern = NULL ; int pattern_len = 0 ; const char * slocale = NULL ; int slocale_len = 0 ; MessageFormatter_object mf = { 0 } ; MessageFormatter_object * mfo = & mf ; if ( zend_parse_method_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , getThis ( ) , \"ssa\" , & slocale , & slocale_len , & pattern , & pattern_len , & args ) == FAILURE ) { intl_error_set ( NULL , U_ILLEGAL_ARGUMENT_ERROR , \"msgfmt_format_message:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>input<S2SV_blank>params\" , 0 TSRMLS_CC ) ; RETURN_FALSE ; <S2SV_StartBug> } <S2SV_EndBug> msgformat_data_init ( & mfo -> mf_data TSRMLS_CC ) ; if ( pattern && pattern_len ) { intl_convert_utf8_to_utf16 ( & spattern , & spattern_len , pattern , pattern_len , & INTL_DATA_ERROR_CODE ( mfo ) ) ; if ( U_FAILURE ( INTL_DATA_ERROR_CODE ( ( mfo ) ) ) ) { intl_error_set ( NULL , U_ILLEGAL_ARGUMENT_ERROR , \"msgfmt_format_message:<S2SV_blank>error<S2SV_blank>converting<S2SV_blank>pattern<S2SV_blank>to<S2SV_blank>UTF-16\" , 0 TSRMLS_CC ) ; RETURN_FALSE ; } } else { spattern_len = 0 ; spattern = NULL ; } if ( slocale_len == 0 ) { slocale = intl_locale_get_default ( TSRMLS_C ) ; } # ifdef MSG_FORMAT_QUOTE_APOS if ( msgformat_fix_quotes ( & spattern , & spattern_len , & INTL_DATA_ERROR_CODE ( mfo ) ) != SUCCESS ) { intl_error_set ( NULL , U_INVALID_FORMAT_ERROR , \"msgfmt_format_message:<S2SV_blank>error<S2SV_blank>converting<S2SV_blank>pattern<S2SV_blank>to<S2SV_blank>quote-friendly<S2SV_blank>format\" , 0 TSRMLS_CC ) ; RETURN_FALSE ; } # endif MSG_FORMAT_OBJECT ( mfo ) = umsg_open ( spattern , spattern_len , slocale , NULL , & INTL_DATA_ERROR_CODE ( mfo ) ) ; if ( spattern && spattern_len ) { efree ( spattern ) ; } INTL_METHOD_CHECK_STATUS ( mfo , \"Creating<S2SV_blank>message<S2SV_blank>formatter<S2SV_blank>failed\" ) ; msgfmt_do_format ( mfo , args , return_value TSRMLS_CC ) ; msgformat_data_free ( & mfo -> mf_data TSRMLS_CC ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RETURN_FALSE ; } INTL_CHECK_LOCALE_LEN ( slocale_len ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void unset_active_map ( const vpx_codec_enc_cfg_t * cfg , vpx_codec_ctx_t * codec ) { <S2SV_StartBug> vpx_active_map_t map = { 0 } ; <S2SV_EndBug> map . rows = ( cfg -> g_h + 15 ) / 16 ; map . cols = ( cfg -> g_w + 15 ) / 16 ; map . active_map = NULL ; if ( vpx_codec_control ( codec , VP8E_SET_ACTIVEMAP , & map ) ) die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>active<S2SV_blank>map\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> map = { 0 , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15861\n\n```\nCWE-476 bool ExprResolveLhs ( struct xkb_context * ctx , const ExprDef * expr , const char * * elem_rtrn , const char * * field_rtrn , ExprDef * * index_rtrn ) { switch ( expr -> expr . op ) { case EXPR_IDENT : * elem_rtrn = NULL ; * field_rtrn = xkb_atom_text ( ctx , expr -> ident . ident ) ; * index_rtrn = NULL ; <S2SV_StartBug> return true ; <S2SV_EndBug> case EXPR_FIELD_REF : * elem_rtrn = xkb_atom_text ( ctx , expr -> field_ref . element ) ; * field_rtrn = xkb_atom_text ( ctx , expr -> field_ref . field ) ; * index_rtrn = NULL ; return true ; case EXPR_ARRAY_REF : * elem_rtrn = xkb_atom_text ( ctx , expr -> array_ref . element ) ; * field_rtrn = xkb_atom_text ( ctx , expr -> array_ref . field ) ; * index_rtrn = expr -> array_ref . entry ; return true ; default : break ; } log_wsgo ( ctx , \"Unexpected<S2SV_blank>operator<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>ResolveLhs\\\\n\" , expr -> expr . op ) ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; return ( * field_rtrn != NULL ) <S2SV_ModEnd> ; case EXPR_FIELD_REF\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t udpSendDatagram ( Socket * socket , const SocketMsg * message , uint_t flags ) { error_t error ; size_t offset ; NetBuffer * buffer ; <S2SV_StartBug> NetTxAncillary ancillary ; <S2SV_EndBug> buffer = udpAllocBuffer ( 0 , & offset ) ; if ( buffer == NULL ) return ERROR_OUT_OF_MEMORY ; error = netBufferAppend ( buffer , message -> data , message -> length ) ; if ( ! error ) { ancillary = NET_DEFAULT_TX_ANCILLARY ; if ( message -> ttl != 0 ) { ancillary . ttl = message -> ttl ; } else if ( ipIsMulticastAddr ( & message -> destIpAddr ) ) { ancillary . ttl = socket -> multicastTtl ; } else { ancillary . ttl = socket -> ttl ; } if ( flags & SOCKET_FLAG_DONT_ROUTE ) { ancillary . dontRoute = TRUE ; } # if ( IP_DIFF_SERV_SUPPORT == ENABLED ) ancillary . dscp = socket -> dscp ; # endif # if ( ETH_SUPPORT == ENABLED ) ancillary . srcMacAddr = message -> srcMacAddr ; ancillary . destMacAddr = message -> destMacAddr ; # endif # if ( ETH_VLAN_SUPPORT == ENABLED ) ancillary . vlanPcp = socket -> vlanPcp ; ancillary . vlanDei = socket -> vlanDei ; # endif # if ( ETH_VMAN_SUPPORT == ENABLED ) ancillary . vmanPcp = socket -> vmanPcp ; ancillary . vmanDei = socket -> vmanDei ; # endif # if ( ETH_PORT_TAGGING_SUPPORT == ENABLED ) ancillary . port = message -> switchPort ; # endif # if ( ETH_TIMESTAMP_SUPPORT == ENABLED ) ancillary . timestampId = message -> timestampId ; # endif <S2SV_StartBug> error = udpSendBuffer ( socket -> interface , & message -> srcIpAddr , <S2SV_EndBug> socket -> localPort , & message -> destIpAddr , message -> destPort , buffer , offset , & ancillary ) ; } netBufferFree ( buffer ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * buffer ; NetInterface * interface ; <S2SV_ModStart> NetTxAncillary ancillary ; if ( message -> interface != NULL ) { interface = message -> interface ; } else { interface = socket -> interface ; } <S2SV_ModStart> = udpSendBuffer ( <S2SV_ModEnd> interface , &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9074\n\n```\nCWE-125 static struct sk_buff * udp6_ufo_fragment ( struct sk_buff * skb , netdev_features_t features ) { struct sk_buff * segs = ERR_PTR ( - EINVAL ) ; unsigned int mss ; unsigned int unfrag_ip6hlen , unfrag_len ; struct frag_hdr * fptr ; u8 * packet_start , * prevhdr ; u8 nexthdr ; u8 frag_hdr_sz = sizeof ( struct frag_hdr ) ; __wsum csum ; int tnl_hlen ; mss = skb_shinfo ( skb ) -> gso_size ; if ( unlikely ( skb -> len <= mss ) ) goto out ; if ( skb_gso_ok ( skb , features | NETIF_F_GSO_ROBUST ) ) { skb_shinfo ( skb ) -> gso_segs = DIV_ROUND_UP ( skb -> len , mss ) ; if ( ! skb_shinfo ( skb ) -> ip6_frag_id ) ipv6_proxy_select_ident ( dev_net ( skb -> dev ) , skb ) ; segs = NULL ; goto out ; } if ( skb -> encapsulation && skb_shinfo ( skb ) -> gso_type & ( SKB_GSO_UDP_TUNNEL | SKB_GSO_UDP_TUNNEL_CSUM ) ) segs = skb_udp_tunnel_segment ( skb , features , true ) ; else { const struct ipv6hdr * ipv6h ; struct udphdr * uh ; if ( ! pskb_may_pull ( skb , sizeof ( struct udphdr ) ) ) goto out ; uh = udp_hdr ( skb ) ; ipv6h = ipv6_hdr ( skb ) ; uh -> check = 0 ; csum = skb_checksum ( skb , 0 , skb -> len , 0 ) ; uh -> check = udp_v6_check ( skb -> len , & ipv6h -> saddr , & ipv6h -> daddr , csum ) ; if ( uh -> check == 0 ) uh -> check = CSUM_MANGLED_0 ; skb -> ip_summed = CHECKSUM_NONE ; if ( ! skb -> encap_hdr_csum ) features |= NETIF_F_HW_CSUM ; tnl_hlen = skb_tnl_header_len ( skb ) ; if ( skb -> mac_header < ( tnl_hlen + frag_hdr_sz ) ) { if ( gso_pskb_expand_head ( skb , tnl_hlen + frag_hdr_sz ) ) goto out ; } unfrag_ip6hlen = ip6_find_1stfragopt ( skb , & prevhdr ) ; <S2SV_StartBug> nexthdr = * prevhdr ; <S2SV_EndBug> * prevhdr = NEXTHDR_FRAGMENT ; unfrag_len = ( skb_network_header ( skb ) - skb_mac_header ( skb ) ) + unfrag_ip6hlen + tnl_hlen ; packet_start = ( u8 * ) skb -> head + SKB_GSO_CB ( skb ) -> mac_offset ; memmove ( packet_start - frag_hdr_sz , packet_start , unfrag_len ) ; SKB_GSO_CB ( skb ) -> mac_offset -= frag_hdr_sz ; skb -> mac_header -= frag_hdr_sz ; skb -> network_header -= frag_hdr_sz ; fptr = ( struct frag_hdr * ) ( skb_network_header ( skb ) + unfrag_ip6hlen ) ; fptr -> nexthdr = nexthdr ; fptr -> reserved = 0 ; if ( ! skb_shinfo ( skb ) -> ip6_frag_id ) ipv6_proxy_select_ident ( dev_net ( skb -> dev ) , skb ) ; fptr -> identification = skb_shinfo ( skb ) -> ip6_frag_id ; segs = skb_segment ( skb , features ) ; } out : return segs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prevhdr ) ; if ( unfrag_ip6hlen < 0 ) return ERR_PTR ( unfrag_ip6hlen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfs3svc_decode_readdirplusargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd3_readdirargs * args ) { int len ; u32 max_blocksize = svc_max_payload ( rqstp ) ; p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; p = xdr_decode_hyper ( p , & args -> cookie ) ; args -> verf = p ; p += 2 ; args -> dircount = ntohl ( * p ++ ) ; args -> count = ntohl ( * p ++ ) ; <S2SV_StartBug> len = args -> count = min ( args -> count , max_blocksize ) ; <S2SV_EndBug> while ( len > 0 ) { struct page * p = * ( rqstp -> rq_next_page ++ ) ; if ( ! args -> buffer ) args -> buffer = page_address ( p ) ; len -= PAGE_SIZE ; } <S2SV_StartBug> return xdr_argsize_check ( rqstp , p ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) ; if ( ! xdr_argsize_check ( rqstp , p ) ) return 0 ; <S2SV_ModStart> ; } return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11080\n\n```\nCWE-400 static int nghttp2_session_upgrade_internal ( nghttp2_session * session , const uint8_t * settings_payload , size_t settings_payloadlen , void * stream_user_data ) { nghttp2_stream * stream ; nghttp2_frame frame ; nghttp2_settings_entry * iv ; size_t niv ; int rv ; nghttp2_priority_spec pri_spec ; nghttp2_mem * mem ; mem = & session -> mem ; if ( ( ! session -> server && session -> next_stream_id != 1 ) || ( session -> server && session -> last_recv_stream_id >= 1 ) ) { return NGHTTP2_ERR_PROTO ; } if ( settings_payloadlen % NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH ) { <S2SV_StartBug> return NGHTTP2_ERR_INVALID_ARGUMENT ; <S2SV_EndBug> } rv = nghttp2_frame_unpack_settings_payload2 ( & iv , & niv , settings_payload , settings_payloadlen , mem ) ; if ( rv != 0 ) { return rv ; } if ( session -> server ) { nghttp2_frame_hd_init ( & frame . hd , settings_payloadlen , NGHTTP2_SETTINGS , NGHTTP2_FLAG_NONE , 0 ) ; frame . settings . iv = iv ; frame . settings . niv = niv ; rv = nghttp2_session_on_settings_received ( session , & frame , 1 ) ; } else { rv = nghttp2_submit_settings ( session , NGHTTP2_FLAG_NONE , iv , niv ) ; } nghttp2_mem_free ( mem , iv ) ; if ( rv != 0 ) { return rv ; } nghttp2_priority_spec_default_init ( & pri_spec ) ; stream = nghttp2_session_open_stream ( session , 1 , NGHTTP2_STREAM_FLAG_NONE , & pri_spec , NGHTTP2_STREAM_OPENING , session -> server ? NULL : stream_user_data ) ; if ( stream == NULL ) { return NGHTTP2_ERR_NOMEM ; } if ( session -> server ) { nghttp2_stream_shutdown ( stream , NGHTTP2_SHUT_RD ) ; session -> last_recv_stream_id = 1 ; session -> last_proc_stream_id = 1 ; } else { nghttp2_stream_shutdown ( stream , NGHTTP2_SHUT_WR ) ; session -> last_sent_stream_id = 1 ; session -> next_stream_id += 2 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { return NGHTTP2_ERR_INVALID_ARGUMENT ; } if ( settings_payloadlen / NGHTTP2_FRAME_SETTINGS_ENTRY_LENGTH > session -> max_settings ) { return NGHTTP2_ERR_TOO_MANY_SETTINGS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5307\n\n```\nCWE-399 static void init_vmcb ( struct vcpu_svm * svm ) { struct vmcb_control_area * control = & svm -> vmcb -> control ; struct vmcb_save_area * save = & svm -> vmcb -> save ; svm -> vcpu . fpu_active = 1 ; svm -> vcpu . arch . hflags = 0 ; set_cr_intercept ( svm , INTERCEPT_CR0_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR3_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR4_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR0_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR3_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR4_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR8_WRITE ) ; set_dr_intercepts ( svm ) ; set_exception_intercept ( svm , PF_VECTOR ) ; set_exception_intercept ( svm , UD_VECTOR ) ; <S2SV_StartBug> set_exception_intercept ( svm , MC_VECTOR ) ; <S2SV_EndBug> set_intercept ( svm , INTERCEPT_INTR ) ; set_intercept ( svm , INTERCEPT_NMI ) ; set_intercept ( svm , INTERCEPT_SMI ) ; set_intercept ( svm , INTERCEPT_SELECTIVE_CR0 ) ; set_intercept ( svm , INTERCEPT_RDPMC ) ; set_intercept ( svm , INTERCEPT_CPUID ) ; set_intercept ( svm , INTERCEPT_INVD ) ; set_intercept ( svm , INTERCEPT_HLT ) ; set_intercept ( svm , INTERCEPT_INVLPG ) ; set_intercept ( svm , INTERCEPT_INVLPGA ) ; set_intercept ( svm , INTERCEPT_IOIO_PROT ) ; set_intercept ( svm , INTERCEPT_MSR_PROT ) ; set_intercept ( svm , INTERCEPT_TASK_SWITCH ) ; set_intercept ( svm , INTERCEPT_SHUTDOWN ) ; set_intercept ( svm , INTERCEPT_VMRUN ) ; set_intercept ( svm , INTERCEPT_VMMCALL ) ; set_intercept ( svm , INTERCEPT_VMLOAD ) ; set_intercept ( svm , INTERCEPT_VMSAVE ) ; set_intercept ( svm , INTERCEPT_STGI ) ; set_intercept ( svm , INTERCEPT_CLGI ) ; set_intercept ( svm , INTERCEPT_SKINIT ) ; set_intercept ( svm , INTERCEPT_WBINVD ) ; set_intercept ( svm , INTERCEPT_MONITOR ) ; set_intercept ( svm , INTERCEPT_MWAIT ) ; set_intercept ( svm , INTERCEPT_XSETBV ) ; control -> iopm_base_pa = iopm_base ; control -> msrpm_base_pa = __pa ( svm -> msrpm ) ; control -> int_ctl = V_INTR_MASKING_MASK ; init_seg ( & save -> es ) ; init_seg ( & save -> ss ) ; init_seg ( & save -> ds ) ; init_seg ( & save -> fs ) ; init_seg ( & save -> gs ) ; save -> cs . selector = 0xf000 ; save -> cs . base = 0xffff0000 ; save -> cs . attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK | SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK ; save -> cs . limit = 0xffff ; save -> gdtr . limit = 0xffff ; save -> idtr . limit = 0xffff ; init_sys_seg ( & save -> ldtr , SEG_TYPE_LDT ) ; init_sys_seg ( & save -> tr , SEG_TYPE_BUSY_TSS16 ) ; svm_set_efer ( & svm -> vcpu , 0 ) ; save -> dr6 = 0xffff0ff0 ; kvm_set_rflags ( & svm -> vcpu , 2 ) ; save -> rip = 0x0000fff0 ; svm -> vcpu . arch . regs [ VCPU_REGS_RIP ] = save -> rip ; svm_set_cr0 ( & svm -> vcpu , X86_CR0_NW | X86_CR0_CD | X86_CR0_ET ) ; kvm_mmu_reset_context ( & svm -> vcpu ) ; save -> cr4 = X86_CR4_PAE ; if ( npt_enabled ) { control -> nested_ctl = 1 ; clr_intercept ( svm , INTERCEPT_INVLPG ) ; clr_exception_intercept ( svm , PF_VECTOR ) ; clr_cr_intercept ( svm , INTERCEPT_CR3_READ ) ; clr_cr_intercept ( svm , INTERCEPT_CR3_WRITE ) ; save -> g_pat = svm -> vcpu . arch . pat ; save -> cr3 = 0 ; save -> cr4 = 0 ; } svm -> asid_generation = 0 ; svm -> nested . vmcb = 0 ; svm -> vcpu . arch . hflags = 0 ; if ( boot_cpu_has ( X86_FEATURE_PAUSEFILTER ) ) { control -> pause_filter_count = 3000 ; set_intercept ( svm , INTERCEPT_PAUSE ) ; } mark_all_dirty ( svm -> vmcb ) ; enable_gif ( svm ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svm , MC_VECTOR ) ; set_exception_intercept ( svm , AC_VECTOR\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9993\n\n```\nCWE-200 static int open_url ( AVFormatContext * s , AVIOContext * * pb , const char * url , AVDictionary * opts , AVDictionary * opts2 , int * is_http ) { HLSContext * c = s -> priv_data ; AVDictionary * tmp = NULL ; const char * proto_name = NULL ; int ret ; av_dict_copy ( & tmp , opts , 0 ) ; av_dict_copy ( & tmp , opts2 , 0 ) ; if ( av_strstart ( url , \"crypto\" , NULL ) ) { if ( url [ 6 ] == '+' || url [ 6 ] == ':' ) proto_name = avio_find_protocol_name ( url + 7 ) ; } if ( ! proto_name ) proto_name = avio_find_protocol_name ( url ) ; if ( ! proto_name ) return AVERROR_INVALIDDATA ; <S2SV_StartBug> if ( ! av_strstart ( proto_name , \"http\" , NULL ) && ! av_strstart ( proto_name , \"file\" , NULL ) ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; if ( ! strncmp ( proto_name , url , strlen ( proto_name ) ) && url [ strlen ( proto_name ) ] == ':' ) ; else if ( av_strstart ( url , \"crypto\" , NULL ) && ! strncmp ( proto_name , url + 7 , strlen ( proto_name ) ) && url [ 7 + strlen ( proto_name ) ] == ':' ) ; else if ( strcmp ( proto_name , \"file\" ) || ! strncmp ( url , \"file,\" , 5 ) ) return AVERROR_INVALIDDATA ; ret = s -> io_open ( s , pb , url , AVIO_FLAG_READ , & tmp ) ; if ( ret >= 0 ) { char * new_cookies = NULL ; if ( ! ( s -> flags & AVFMT_FLAG_CUSTOM_IO ) ) av_opt_get ( * pb , \"cookies\" , AV_OPT_SEARCH_CHILDREN , ( uint8_t * * ) & new_cookies ) ; if ( new_cookies ) { av_free ( c -> cookies ) ; c -> cookies = new_cookies ; } av_dict_set ( & opts , \"cookies\" , c -> cookies , 0 ) ; } av_dict_free ( & tmp ) ; if ( is_http ) * is_http = av_strstart ( proto_name , \"http\" , NULL ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> av_strstart ( proto_name <S2SV_ModStart> ( proto_name , \"file\" , NULL ) ) { if ( strcmp ( c -> allowed_extensions , \"ALL\" ) && ! av_match_ext ( url , c -> allowed_extensions ) ) { av_log ( s , AV_LOG_ERROR , \"Filename<S2SV_blank>extension<S2SV_blank>of<S2SV_blank>\\\\\\'%s\\\\\\'<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>common<S2SV_blank>multimedia<S2SV_blank>extension,<S2SV_blank>blocked<S2SV_blank>for<S2SV_blank>security<S2SV_blank>reasons.\\\\n\" \"If<S2SV_blank>you<S2SV_blank>wish<S2SV_blank>to<S2SV_blank>override<S2SV_blank>this<S2SV_blank>adjust<S2SV_blank>allowed_extensions,<S2SV_blank>you<S2SV_blank>can<S2SV_blank>set<S2SV_blank>it<S2SV_blank>to<S2SV_blank>\\\\\\'ALL\\\\\\'<S2SV_blank>to<S2SV_blank>allow<S2SV_blank>all\\\\n\" , url ) ; return AVERROR_INVALIDDATA ; } } else if ( av_strstart ( proto_name , <S2SV_ModStart> , NULL ) ) { ; } else <S2SV_ModEnd> return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static struct mnt_namespace * create_mnt_ns ( struct vfsmount * m ) { struct mnt_namespace * new_ns = alloc_mnt_ns ( & init_user_ns ) ; if ( ! IS_ERR ( new_ns ) ) { struct mount * mnt = real_mount ( m ) ; mnt -> mnt_ns = new_ns ; new_ns -> root = mnt ; <S2SV_StartBug> list_add ( & mnt -> mnt_list , & new_ns -> list ) ; <S2SV_EndBug> } else { mntput ( m ) ; } return new_ns ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = mnt ; new_ns -> mounts ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void update_rate_histogram ( struct rate_hist * hist , const vpx_codec_enc_cfg_t * cfg , const vpx_codec_cx_pkt_t * pkt ) { int i ; int64_t then = 0 ; int64_t avg_bitrate = 0 ; int64_t sum_sz = 0 ; const int64_t now = pkt -> data . frame . pts * 1000 * ( uint64_t ) cfg -> g_timebase . num / ( uint64_t ) cfg -> g_timebase . den ; int idx = hist -> frames ++ % hist -> samples ; hist -> pts [ idx ] = now ; hist -> sz [ idx ] = ( int ) pkt -> data . frame . sz ; if ( now < cfg -> rc_buf_initial_sz ) return ; <S2SV_StartBug> then = now ; <S2SV_EndBug> for ( i = hist -> frames ; i > 0 && hist -> frames - i < hist -> samples ; i -- ) { const int i_idx = ( i - 1 ) % hist -> samples ; then = hist -> pts [ i_idx ] ; if ( now - then > cfg -> rc_buf_sz ) break ; sum_sz += hist -> sz [ i_idx ] ; } if ( now == then ) return ; avg_bitrate = sum_sz * 8 * 1000 / ( now - then ) ; idx = ( int ) ( avg_bitrate * ( RATE_BINS / 2 ) / ( cfg -> rc_target_bitrate * 1000 ) ) ; if ( idx < 0 ) idx = 0 ; if ( idx > RATE_BINS - 1 ) idx = RATE_BINS - 1 ; if ( hist -> bucket [ idx ] . low > avg_bitrate ) hist -> bucket [ idx ] . low = ( int ) avg_bitrate ; if ( hist -> bucket [ idx ] . high < avg_bitrate ) hist -> bucket [ idx ] . high = ( int ) avg_bitrate ; hist -> bucket [ idx ] . count ++ ; hist -> total ++ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; if ( ! cfg -> rc_target_bitrate ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t validate_img ( vpx_codec_alg_priv_t * ctx , const vpx_image_t * img ) { switch ( img -> fmt ) { case VPX_IMG_FMT_YV12 : case VPX_IMG_FMT_I420 : <S2SV_StartBug> case VPX_IMG_FMT_I422 : <S2SV_EndBug> <S2SV_StartBug> case VPX_IMG_FMT_I444 : <S2SV_EndBug> break ; default : ERROR ( \"Invalid<S2SV_blank>image<S2SV_blank>format.<S2SV_blank>Only<S2SV_blank>YV12,<S2SV_blank>I420,<S2SV_blank>I422,<S2SV_blank>I444<S2SV_blank>images<S2SV_blank>are<S2SV_blank>\" <S2SV_StartBug> \"supported.\" ) ; <S2SV_EndBug> } if ( img -> d_w != ctx -> cfg . g_w || img -> d_h != ctx -> cfg . g_h ) ERROR ( \"Image<S2SV_blank>size<S2SV_blank>must<S2SV_blank>match<S2SV_blank>encoder<S2SV_blank>init<S2SV_blank>configuration<S2SV_blank>size\" ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VPX_IMG_FMT_I420 : case VPX_IMG_FMT_I42016 : break ; case <S2SV_ModStart> case VPX_IMG_FMT_I444 : case VPX_IMG_FMT_I440 : if ( ctx -> cfg . g_profile != ( unsigned int ) PROFILE_1 ) { ERROR ( \"Invalid<S2SV_blank>image<S2SV_blank>format.<S2SV_blank>I422,<S2SV_blank>I444,<S2SV_blank>I440<S2SV_blank>images<S2SV_blank>are<S2SV_blank>\" \"not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>profile.\" ) ; } break ; case VPX_IMG_FMT_I42216 : case VPX_IMG_FMT_I44416 : case VPX_IMG_FMT_I44016 : if ( ctx -> cfg . g_profile != ( unsigned int ) PROFILE_1 && ctx -> cfg . g_profile != ( unsigned int ) PROFILE_3 ) { ERROR ( \"Invalid<S2SV_blank>image<S2SV_blank>format.<S2SV_blank>16-bit<S2SV_blank>I422,<S2SV_blank>I444,<S2SV_blank>I440<S2SV_blank>images<S2SV_blank>are<S2SV_blank>\" \"not<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>profile.\" ) ; } <S2SV_ModStart> \"Invalid<S2SV_blank>image<S2SV_blank>format.<S2SV_blank>Only<S2SV_blank>YV12,<S2SV_blank>I420,<S2SV_blank>I422,<S2SV_blank>I444<S2SV_blank>images<S2SV_blank>are<S2SV_blank>\" \"supported.\" ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9732\n\n```\nCWE-400 static int read_packet ( int fd , gss_buffer_t buf , int timeout , int first ) { int ret ; static uint32_t len = 0 ; static char len_buf [ 4 ] ; static int len_buf_pos = 0 ; static char * tmpbuf = 0 ; static int tmpbuf_pos = 0 ; if ( first ) { len_buf_pos = 0 ; return - 2 ; } if ( len_buf_pos < 4 ) { ret = timed_read ( fd , & len_buf [ len_buf_pos ] , 4 - len_buf_pos , timeout ) ; if ( ret == - 1 ) { if ( errno == EINTR || errno == EAGAIN ) return - 2 ; LOG ( LOG_ERR , ( \"%s\" , strerror ( errno ) ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } if ( ret == 0 ) { if ( len_buf_pos == 0 ) return 0 ; LOG ( LOG_INFO , ( \"EOF<S2SV_blank>reading<S2SV_blank>packet<S2SV_blank>len\" ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } len_buf_pos += ret ; } if ( len_buf_pos != 4 ) return - 2 ; len = ntohl ( * ( uint32_t * ) len_buf ) ; if ( len > GSTD_MAXPACKETCONTENTS + 512 ) { LOG ( LOG_ERR , ( \"ridiculous<S2SV_blank>length,<S2SV_blank>%ld\" , len ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } if ( ! tmpbuf ) { if ( ( tmpbuf = malloc ( len ) ) == NULL ) { LOG ( LOG_CRIT , ( \"malloc<S2SV_blank>failure,<S2SV_blank>%ld<S2SV_blank>bytes\" , len ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } } ret = timed_read ( fd , tmpbuf + tmpbuf_pos , len - tmpbuf_pos , timeout ) ; if ( ret == - 1 ) { if ( errno == EINTR || errno == EAGAIN ) return - 2 ; LOG ( LOG_ERR , ( \"%s\" , strerror ( errno ) ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } if ( ret == 0 ) { LOG ( LOG_ERR , ( \"EOF<S2SV_blank>while<S2SV_blank>reading<S2SV_blank>packet<S2SV_blank>(len=%d)\" , len ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } tmpbuf_pos += ret ; if ( tmpbuf_pos == len ) { buf -> length = len ; buf -> value = tmpbuf ; len = len_buf_pos = tmpbuf_pos = 0 ; tmpbuf = NULL ; LOG ( LOG_DEBUG , ( \"read<S2SV_blank>packet<S2SV_blank>of<S2SV_blank>length<S2SV_blank>%d\" , buf -> length ) ) ; return 1 ; } return - 2 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } len_buf_pos <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } } <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) ; goto bail <S2SV_ModEnd> ; } tmpbuf_pos <S2SV_ModStart> - 2 ; bail : free ( tmpbuf ) ; tmpbuf = NULL ; return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4163\n\n```\nCWE-399 int ip6_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int transhdrlen , int hlimit , int tclass , struct ipv6_txoptions * opt , struct flowi6 * fl6 , struct rt6_info * rt , unsigned int flags , int dontfrag ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_cork * cork ; struct sk_buff * skb , * skb_prev = NULL ; <S2SV_StartBug> unsigned int maxfraglen , fragheaderlen ; <S2SV_EndBug> int exthdrlen ; int dst_exthdrlen ; <S2SV_StartBug> int hh_len ; <S2SV_EndBug> int mtu ; int copy ; int err ; int offset = 0 ; __u8 tx_flags = 0 ; if ( flags & MSG_PROBE ) return 0 ; cork = & inet -> cork . base ; if ( skb_queue_empty ( & sk -> sk_write_queue ) ) { if ( opt ) { if ( WARN_ON ( np -> cork . opt ) ) return - EINVAL ; np -> cork . opt = kzalloc ( opt -> tot_len , sk -> sk_allocation ) ; if ( unlikely ( np -> cork . opt == NULL ) ) return - ENOBUFS ; np -> cork . opt -> tot_len = opt -> tot_len ; np -> cork . opt -> opt_flen = opt -> opt_flen ; np -> cork . opt -> opt_nflen = opt -> opt_nflen ; np -> cork . opt -> dst0opt = ip6_opt_dup ( opt -> dst0opt , sk -> sk_allocation ) ; if ( opt -> dst0opt && ! np -> cork . opt -> dst0opt ) return - ENOBUFS ; np -> cork . opt -> dst1opt = ip6_opt_dup ( opt -> dst1opt , sk -> sk_allocation ) ; if ( opt -> dst1opt && ! np -> cork . opt -> dst1opt ) return - ENOBUFS ; np -> cork . opt -> hopopt = ip6_opt_dup ( opt -> hopopt , sk -> sk_allocation ) ; if ( opt -> hopopt && ! np -> cork . opt -> hopopt ) return - ENOBUFS ; np -> cork . opt -> srcrt = ip6_rthdr_dup ( opt -> srcrt , sk -> sk_allocation ) ; if ( opt -> srcrt && ! np -> cork . opt -> srcrt ) return - ENOBUFS ; } dst_hold ( & rt -> dst ) ; cork -> dst = & rt -> dst ; inet -> cork . fl . u . ip6 = * fl6 ; np -> cork . hop_limit = hlimit ; np -> cork . tclass = tclass ; if ( rt -> dst . flags & DST_XFRM_TUNNEL ) mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( & rt -> dst ) ; else mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( rt -> dst . path ) ; if ( np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } cork -> fragsize = mtu ; if ( dst_allfrag ( rt -> dst . path ) ) cork -> flags |= IPCORK_ALLFRAG ; cork -> length = 0 ; exthdrlen = ( opt ? opt -> opt_flen : 0 ) ; length += exthdrlen ; transhdrlen += exthdrlen ; dst_exthdrlen = rt -> dst . header_len - rt -> rt6i_nfheader_len ; } else { rt = ( struct rt6_info * ) cork -> dst ; fl6 = & inet -> cork . fl . u . ip6 ; opt = np -> cork . opt ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; mtu = cork -> fragsize ; } hh_len = LL_RESERVED_SPACE ( rt -> dst . dev ) ; fragheaderlen = sizeof ( struct ipv6hdr ) + rt -> rt6i_nfheader_len + ( opt ? opt -> opt_nflen : 0 ) ; maxfraglen = ( ( mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; if ( mtu <= sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN ) { if ( cork -> length + length > sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN - fragheaderlen ) { ipv6_local_error ( sk , EMSGSIZE , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } } if ( sk -> sk_type == SOCK_DGRAM ) sock_tx_timestamp ( sk , & tx_flags ) ; cork -> length += length ; if ( length > mtu ) { int proto = sk -> sk_protocol ; if ( dontfrag && ( proto == IPPROTO_UDP || proto == IPPROTO_RAW ) ) { ipv6_local_rxpmtu ( sk , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } if ( proto == IPPROTO_UDP && ( rt -> dst . dev -> features & NETIF_F_UFO ) ) { err = ip6_ufo_append_data ( sk , getfrag , from , length , hh_len , fragheaderlen , transhdrlen , mtu , flags , rt ) ; if ( err ) goto error ; return 0 ; } } if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) goto alloc_new_skb ; while ( length > 0 ) { copy = ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - skb -> len ; if ( copy < length ) copy = maxfraglen - skb -> len ; if ( copy <= 0 ) { char * data ; unsigned int datalen ; unsigned int fraglen ; unsigned int fraggap ; unsigned int alloclen ; alloc_new_skb : if ( skb ) fraggap = skb -> len - maxfraglen ; else fraggap = 0 ; if ( skb == NULL || skb_prev == NULL ) ip6_append_data_mtu ( & mtu , & maxfraglen , <S2SV_StartBug> fragheaderlen , skb , rt ) ; <S2SV_EndBug> skb_prev = skb ; datalen = length + fraggap ; if ( datalen > ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - fragheaderlen ) datalen = maxfraglen - fragheaderlen - rt -> dst . trailer_len ; if ( ( flags & MSG_MORE ) && ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) alloclen = mtu ; else alloclen = datalen + fragheaderlen ; alloclen += dst_exthdrlen ; if ( datalen != length + fraggap ) { datalen += rt -> dst . trailer_len ; } alloclen += rt -> dst . trailer_len ; fraglen = datalen + fragheaderlen ; alloclen += sizeof ( struct frag_hdr ) ; if ( transhdrlen ) { skb = sock_alloc_send_skb ( sk , alloclen + hh_len , ( flags & MSG_DONTWAIT ) , & err ) ; } else { skb = NULL ; if ( atomic_read ( & sk -> sk_wmem_alloc ) <= 2 * sk -> sk_sndbuf ) skb = sock_wmalloc ( sk , alloclen + hh_len , 1 , sk -> sk_allocation ) ; if ( unlikely ( skb == NULL ) ) err = - ENOBUFS ; else { tx_flags = 0 ; } } if ( skb == NULL ) goto error ; skb -> ip_summed = CHECKSUM_NONE ; skb -> csum = 0 ; skb_reserve ( skb , hh_len + sizeof ( struct frag_hdr ) + dst_exthdrlen ) ; if ( sk -> sk_type == SOCK_DGRAM ) skb_shinfo ( skb ) -> tx_flags = tx_flags ; data = skb_put ( skb , fraglen ) ; skb_set_network_header ( skb , exthdrlen ) ; data += fragheaderlen ; skb -> transport_header = ( skb -> network_header + fragheaderlen ) ; if ( fraggap ) { skb -> csum = skb_copy_and_csum_bits ( skb_prev , maxfraglen , data + transhdrlen , fraggap , 0 ) ; skb_prev -> csum = csum_sub ( skb_prev -> csum , skb -> csum ) ; data += fraggap ; pskb_trim_unique ( skb_prev , maxfraglen ) ; } copy = datalen - transhdrlen - fraggap ; if ( copy < 0 ) { err = - EINVAL ; kfree_skb ( skb ) ; goto error ; } else if ( copy > 0 && getfrag ( from , data + transhdrlen , offset , copy , fraggap , skb ) < 0 ) { err = - EFAULT ; kfree_skb ( skb ) ; goto error ; } offset += copy ; length -= datalen - fraggap ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; continue ; } if ( copy > length ) copy = length ; if ( ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) { unsigned int off ; off = skb -> len ; if ( getfrag ( from , skb_put ( skb , copy ) , offset , copy , off , skb ) < 0 ) { __skb_trim ( skb , off ) ; err = - EFAULT ; goto error ; } } else { int i = skb_shinfo ( skb ) -> nr_frags ; struct page_frag * pfrag = sk_page_frag ( sk ) ; err = - ENOMEM ; if ( ! sk_page_frag_refill ( sk , pfrag ) ) goto error ; if ( ! skb_can_coalesce ( skb , i , pfrag -> page , pfrag -> offset ) ) { err = - EMSGSIZE ; if ( i == MAX_SKB_FRAGS ) goto error ; __skb_fill_page_desc ( skb , i , pfrag -> page , pfrag -> offset , 0 ) ; skb_shinfo ( skb ) -> nr_frags = ++ i ; get_page ( pfrag -> page ) ; } copy = min_t ( int , copy , pfrag -> size - pfrag -> offset ) ; if ( getfrag ( from , page_address ( pfrag -> page ) + pfrag -> offset , offset , copy , skb -> len , skb ) < 0 ) goto error_efault ; pfrag -> offset += copy ; skb_frag_size_add ( & skb_shinfo ( skb ) -> frags [ i - 1 ] , copy ) ; skb -> len += copy ; skb -> data_len += copy ; skb -> truesize += copy ; atomic_add ( copy , & sk -> sk_wmem_alloc ) ; } offset += copy ; length -= copy ; } return 0 ; error_efault : err = - EFAULT ; error : cork -> length -= length ; IP6_INC_STATS ( sock_net ( sk ) , rt -> rt6i_idev , IPSTATS_MIB_OUTDISCARDS ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> maxfraglen , fragheaderlen , mtu <S2SV_ModStart> ; int hh_len <S2SV_ModEnd> ; int copy <S2SV_ModStart> skb , rt , np -> pmtudisc == IPV6_PMTUDISC_PROBE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19055\n\n```\nCWE-401 static int nl80211_get_ftm_responder_stats ( struct sk_buff * skb , struct genl_info * info ) { struct cfg80211_registered_device * rdev = info -> user_ptr [ 0 ] ; struct net_device * dev = info -> user_ptr [ 1 ] ; struct wireless_dev * wdev = dev -> ieee80211_ptr ; struct cfg80211_ftm_responder_stats ftm_stats = { } ; struct sk_buff * msg ; void * hdr ; struct nlattr * ftm_stats_attr ; int err ; if ( wdev -> iftype != NL80211_IFTYPE_AP || ! wdev -> beacon_interval ) return - EOPNOTSUPP ; err = rdev_get_ftm_responder_stats ( rdev , dev , & ftm_stats ) ; if ( err ) return err ; if ( ! ftm_stats . filled ) return - ENODATA ; msg = nlmsg_new ( NLMSG_DEFAULT_SIZE , GFP_KERNEL ) ; if ( ! msg ) return - ENOMEM ; hdr = nl80211hdr_put ( msg , info -> snd_portid , info -> snd_seq , 0 , NL80211_CMD_GET_FTM_RESPONDER_STATS ) ; if ( ! hdr ) <S2SV_StartBug> return - ENOBUFS ; <S2SV_EndBug> if ( nla_put_u32 ( msg , NL80211_ATTR_IFINDEX , dev -> ifindex ) ) goto nla_put_failure ; ftm_stats_attr = nla_nest_start_noflag ( msg , NL80211_ATTR_FTM_RESPONDER_STATS ) ; if ( ! ftm_stats_attr ) goto nla_put_failure ; # define SET_FTM ( field , name , type ) do { if ( ( ftm_stats . filled & BIT ( NL80211_FTM_STATS_ ## name ) ) && nla_put_ ## type ( msg , NL80211_FTM_STATS_ ## name , ftm_stats . field ) ) goto nla_put_failure ; } while ( 0 ) # define SET_FTM_U64 ( field , name ) do { if ( ( ftm_stats . filled & BIT ( NL80211_FTM_STATS_ ## name ) ) && nla_put_u64_64bit ( msg , NL80211_FTM_STATS_ ## name , ftm_stats . field , NL80211_FTM_STATS_PAD ) ) goto nla_put_failure ; } while ( 0 ) SET_FTM ( success_num , SUCCESS_NUM , u32 ) ; SET_FTM ( partial_num , PARTIAL_NUM , u32 ) ; SET_FTM ( failed_num , FAILED_NUM , u32 ) ; SET_FTM ( asap_num , ASAP_NUM , u32 ) ; SET_FTM ( non_asap_num , NON_ASAP_NUM , u32 ) ; SET_FTM_U64 ( total_duration_ms , TOTAL_DURATION_MSEC ) ; SET_FTM ( unknown_triggers_num , UNKNOWN_TRIGGERS_NUM , u32 ) ; SET_FTM ( reschedule_requests_num , RESCHEDULE_REQUESTS_NUM , u32 ) ; SET_FTM ( out_of_window_triggers_num , OUT_OF_WINDOW_TRIGGERS_NUM , u32 ) ; # undef SET_FTM nla_nest_end ( msg , ftm_stats_attr ) ; genlmsg_end ( msg , hdr ) ; return genlmsg_reply ( msg , info ) ; nla_put_failure : nlmsg_free ( msg ) ; return - ENOBUFS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! hdr ) goto nla_put_failure <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8012\n\n```\nCWE-617 int lldp_decode ( struct lldpd * cfg , char * frame , int s , struct lldpd_hardware * hardware , struct lldpd_chassis * * newchassis , struct lldpd_port * * newport ) { struct lldpd_chassis * chassis ; struct lldpd_port * port ; const char lldpaddr [ ] = LLDP_MULTICAST_ADDR ; const char dot1 [ ] = LLDP_TLV_ORG_DOT1 ; const char dot3 [ ] = LLDP_TLV_ORG_DOT3 ; const char med [ ] = LLDP_TLV_ORG_MED ; const char dcbx [ ] = LLDP_TLV_ORG_DCBX ; unsigned char orgid [ 3 ] ; int length , gotend = 0 , ttl_received = 0 ; int tlv_size , tlv_type , tlv_subtype ; u_int8_t * pos , * tlv ; char * b ; # ifdef ENABLE_DOT1 struct lldpd_vlan * vlan = NULL ; int vlan_len ; struct lldpd_ppvid * ppvid ; struct lldpd_pi * pi = NULL ; # endif struct lldpd_mgmt * mgmt ; int af ; u_int8_t addr_str_length , addr_str_buffer [ 32 ] ; u_int8_t addr_family , addr_length , * addr_ptr , iface_subtype ; u_int32_t iface_number , iface ; # ifdef ENABLE_CUSTOM struct lldpd_custom * custom = NULL ; # endif log_debug ( \"lldp\" , \"receive<S2SV_blank>LLDP<S2SV_blank>PDU<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; if ( ( chassis = calloc ( 1 , sizeof ( struct lldpd_chassis ) ) ) == NULL ) { log_warn ( \"lldp\" , \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>remote<S2SV_blank>chassis\" ) ; return - 1 ; } TAILQ_INIT ( & chassis -> c_mgmt ) ; if ( ( port = calloc ( 1 , sizeof ( struct lldpd_port ) ) ) == NULL ) { log_warn ( \"lldp\" , \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>remote<S2SV_blank>port\" ) ; free ( chassis ) ; return - 1 ; } # ifdef ENABLE_DOT1 TAILQ_INIT ( & port -> p_vlans ) ; TAILQ_INIT ( & port -> p_ppvids ) ; TAILQ_INIT ( & port -> p_pids ) ; # endif # ifdef ENABLE_CUSTOM TAILQ_INIT ( & port -> p_custom_list ) ; # endif length = s ; pos = ( u_int8_t * ) frame ; if ( length < 2 * ETHER_ADDR_LEN + sizeof ( u_int16_t ) ) { log_warnx ( \"lldp\" , \"too<S2SV_blank>short<S2SV_blank>frame<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } if ( PEEK_CMP ( lldpaddr , ETHER_ADDR_LEN ) != 0 ) { log_info ( \"lldp\" , \"frame<S2SV_blank>not<S2SV_blank>targeted<S2SV_blank>at<S2SV_blank>LLDP<S2SV_blank>multicast<S2SV_blank>address<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_DISCARD ( ETHER_ADDR_LEN ) ; if ( PEEK_UINT16 != ETHERTYPE_LLDP ) { log_info ( \"lldp\" , \"non<S2SV_blank>LLDP<S2SV_blank>frame<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } while ( length && ( ! gotend ) ) { if ( length < 2 ) { log_warnx ( \"lldp\" , \"tlv<S2SV_blank>header<S2SV_blank>too<S2SV_blank>short<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } tlv_size = PEEK_UINT16 ; tlv_type = tlv_size >> 9 ; tlv_size = tlv_size & 0x1ff ; ( void ) PEEK_SAVE ( tlv ) ; if ( length < tlv_size ) { log_warnx ( \"lldp\" , \"frame<S2SV_blank>too<S2SV_blank>short<S2SV_blank>for<S2SV_blank>tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } switch ( tlv_type ) { case LLDP_TLV_END : if ( tlv_size != 0 ) { log_warnx ( \"lldp\" , \"lldp<S2SV_blank>end<S2SV_blank>received<S2SV_blank>with<S2SV_blank>size<S2SV_blank>not<S2SV_blank>null<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } if ( length ) log_debug ( \"lldp\" , \"extra<S2SV_blank>data<S2SV_blank>after<S2SV_blank>lldp<S2SV_blank>end<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; gotend = 1 ; break ; case LLDP_TLV_CHASSIS_ID : case LLDP_TLV_PORT_ID : CHECK_TLV_SIZE ( 2 , \"Port<S2SV_blank>Id\" ) ; tlv_subtype = PEEK_UINT8 ; if ( ( tlv_subtype == 0 ) || ( tlv_subtype > 7 ) ) { log_warnx ( \"lldp\" , \"unknown<S2SV_blank>subtype<S2SV_blank>for<S2SV_blank>tlv<S2SV_blank>id<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } if ( ( b = ( char * ) calloc ( 1 , tlv_size - 1 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>id<S2SV_blank>tlv<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( b , tlv_size - 1 ) ; if ( tlv_type == LLDP_TLV_PORT_ID ) { port -> p_id_subtype = tlv_subtype ; port -> p_id = b ; port -> p_id_len = tlv_size - 1 ; } else { chassis -> c_id_subtype = tlv_subtype ; chassis -> c_id = b ; chassis -> c_id_len = tlv_size - 1 ; } break ; case LLDP_TLV_TTL : CHECK_TLV_SIZE ( 2 , \"TTL\" ) ; chassis -> c_ttl = PEEK_UINT16 ; ttl_received = 1 ; break ; case LLDP_TLV_PORT_DESCR : case LLDP_TLV_SYSTEM_NAME : case LLDP_TLV_SYSTEM_DESCR : if ( tlv_size < 1 ) { log_debug ( \"lldp\" , \"empty<S2SV_blank>tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; break ; } if ( ( b = ( char * ) calloc ( 1 , tlv_size + 1 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>string<S2SV_blank>tlv<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( b , tlv_size ) ; if ( tlv_type == LLDP_TLV_PORT_DESCR ) port -> p_descr = b ; else if ( tlv_type == LLDP_TLV_SYSTEM_NAME ) chassis -> c_name = b ; else chassis -> c_descr = b ; break ; case LLDP_TLV_SYSTEM_CAP : CHECK_TLV_SIZE ( 4 , \"System<S2SV_blank>capabilities\" ) ; chassis -> c_cap_available = PEEK_UINT16 ; chassis -> c_cap_enabled = PEEK_UINT16 ; break ; case LLDP_TLV_MGMT_ADDR : CHECK_TLV_SIZE ( 1 , \"Management<S2SV_blank>address\" ) ; addr_str_length = PEEK_UINT8 ; if ( addr_str_length > sizeof ( addr_str_buffer ) ) { log_warnx ( \"lldp\" , \"too<S2SV_blank>large<S2SV_blank>management<S2SV_blank>address<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } CHECK_TLV_SIZE ( 1 + addr_str_length , \"Management<S2SV_blank>address\" ) ; PEEK_BYTES ( addr_str_buffer , addr_str_length ) ; addr_length = addr_str_length - 1 ; addr_family = addr_str_buffer [ 0 ] ; addr_ptr = & addr_str_buffer [ 1 ] ; CHECK_TLV_SIZE ( 1 + addr_str_length + 5 , \"Management<S2SV_blank>address\" ) ; iface_subtype = PEEK_UINT8 ; iface_number = PEEK_UINT32 ; af = lldpd_af_from_lldp_proto ( addr_family ) ; if ( af == LLDPD_AF_UNSPEC ) break ; if ( iface_subtype == LLDP_MGMT_IFACE_IFINDEX ) iface = iface_number ; else iface = 0 ; mgmt = lldpd_alloc_mgmt ( af , addr_ptr , addr_length , iface ) ; if ( mgmt == NULL ) { <S2SV_StartBug> assert ( errno == ENOMEM ) ; <S2SV_EndBug> log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>\" <S2SV_StartBug> \"for<S2SV_blank>management<S2SV_blank>address\" ) ; <S2SV_EndBug> goto malformed ; } TAILQ_INSERT_TAIL ( & chassis -> c_mgmt , mgmt , m_entries ) ; break ; case LLDP_TLV_ORG : CHECK_TLV_SIZE ( 1 + ( int ) sizeof ( orgid ) , \"Organisational\" ) ; PEEK_BYTES ( orgid , sizeof ( orgid ) ) ; tlv_subtype = PEEK_UINT8 ; if ( memcmp ( dot1 , orgid , sizeof ( orgid ) ) == 0 ) { # ifndef ENABLE_DOT1 hardware -> h_rx_unrecognized_cnt ++ ; # else switch ( tlv_subtype ) { case LLDP_TLV_DOT1_VLANNAME : CHECK_TLV_SIZE ( 7 , \"VLAN\" ) ; if ( ( vlan = ( struct lldpd_vlan * ) calloc ( 1 , sizeof ( struct lldpd_vlan ) ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>vlan<S2SV_blank>\" \"structure<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } vlan -> v_vid = PEEK_UINT16 ; vlan_len = PEEK_UINT8 ; CHECK_TLV_SIZE ( 7 + vlan_len , \"VLAN\" ) ; if ( ( vlan -> v_name = ( char * ) calloc ( 1 , vlan_len + 1 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>vlan<S2SV_blank>name<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( vlan -> v_name , vlan_len ) ; TAILQ_INSERT_TAIL ( & port -> p_vlans , vlan , v_entries ) ; vlan = NULL ; break ; case LLDP_TLV_DOT1_PVID : CHECK_TLV_SIZE ( 6 , \"PVID\" ) ; port -> p_pvid = PEEK_UINT16 ; break ; case LLDP_TLV_DOT1_PPVID : CHECK_TLV_SIZE ( 7 , \"PPVID\" ) ; if ( ( ppvid = ( struct lldpd_ppvid * ) calloc ( 1 , sizeof ( struct lldpd_ppvid ) ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>ppvid<S2SV_blank>\" \"structure<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } ppvid -> p_cap_status = PEEK_UINT8 ; ppvid -> p_ppvid = PEEK_UINT16 ; TAILQ_INSERT_TAIL ( & port -> p_ppvids , ppvid , p_entries ) ; break ; case LLDP_TLV_DOT1_PI : CHECK_TLV_SIZE ( 5 , \"PI\" ) ; if ( ( pi = ( struct lldpd_pi * ) calloc ( 1 , sizeof ( struct lldpd_pi ) ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>PI<S2SV_blank>\" \"structure<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } pi -> p_pi_len = PEEK_UINT8 ; CHECK_TLV_SIZE ( 5 + pi -> p_pi_len , \"PI\" ) ; if ( ( pi -> p_pi = ( char * ) calloc ( 1 , pi -> p_pi_len ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>pid<S2SV_blank>name<S2SV_blank>for<S2SV_blank>\" \"tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( pi -> p_pi , pi -> p_pi_len ) ; TAILQ_INSERT_TAIL ( & port -> p_pids , pi , p_entries ) ; pi = NULL ; break ; default : hardware -> h_rx_unrecognized_cnt ++ ; } # endif } else if ( memcmp ( dot3 , orgid , sizeof ( orgid ) ) == 0 ) { # ifndef ENABLE_DOT3 hardware -> h_rx_unrecognized_cnt ++ ; # else switch ( tlv_subtype ) { case LLDP_TLV_DOT3_MAC : CHECK_TLV_SIZE ( 9 , \"MAC/PHY\" ) ; port -> p_macphy . autoneg_support = PEEK_UINT8 ; port -> p_macphy . autoneg_enabled = ( port -> p_macphy . autoneg_support & 0x2 ) >> 1 ; port -> p_macphy . autoneg_support = port -> p_macphy . autoneg_support & 0x1 ; port -> p_macphy . autoneg_advertised = PEEK_UINT16 ; port -> p_macphy . mau_type = PEEK_UINT16 ; break ; case LLDP_TLV_DOT3_LA : CHECK_TLV_SIZE ( 9 , \"Link<S2SV_blank>aggregation\" ) ; PEEK_DISCARD_UINT8 ; port -> p_aggregid = PEEK_UINT32 ; break ; case LLDP_TLV_DOT3_MFS : CHECK_TLV_SIZE ( 6 , \"MFS\" ) ; port -> p_mfs = PEEK_UINT16 ; break ; case LLDP_TLV_DOT3_POWER : CHECK_TLV_SIZE ( 7 , \"Power\" ) ; port -> p_power . devicetype = PEEK_UINT8 ; port -> p_power . supported = ( port -> p_power . devicetype & 0x2 ) >> 1 ; port -> p_power . enabled = ( port -> p_power . devicetype & 0x4 ) >> 2 ; port -> p_power . paircontrol = ( port -> p_power . devicetype & 0x8 ) >> 3 ; port -> p_power . devicetype = ( port -> p_power . devicetype & 0x1 ) ? LLDP_DOT3_POWER_PSE : LLDP_DOT3_POWER_PD ; port -> p_power . pairs = PEEK_UINT8 ; port -> p_power . class = PEEK_UINT8 ; if ( tlv_size >= 12 ) { port -> p_power . powertype = PEEK_UINT8 ; port -> p_power . source = ( port -> p_power . powertype & ( 1 << 5 | 1 << 4 ) ) >> 4 ; port -> p_power . priority = ( port -> p_power . powertype & ( 1 << 1 | 1 << 0 ) ) ; port -> p_power . powertype = ( port -> p_power . powertype & ( 1 << 7 ) ) ? LLDP_DOT3_POWER_8023AT_TYPE1 : LLDP_DOT3_POWER_8023AT_TYPE2 ; port -> p_power . requested = PEEK_UINT16 ; port -> p_power . allocated = PEEK_UINT16 ; } else port -> p_power . powertype = LLDP_DOT3_POWER_8023AT_OFF ; break ; default : hardware -> h_rx_unrecognized_cnt ++ ; } # endif } else if ( memcmp ( med , orgid , sizeof ( orgid ) ) == 0 ) { # ifndef ENABLE_LLDPMED hardware -> h_rx_unrecognized_cnt ++ ; # else u_int32_t policy ; unsigned loctype ; unsigned power ; switch ( tlv_subtype ) { case LLDP_TLV_MED_CAP : CHECK_TLV_SIZE ( 7 , \"LLDP-MED<S2SV_blank>capabilities\" ) ; chassis -> c_med_cap_available = PEEK_UINT16 ; chassis -> c_med_type = PEEK_UINT8 ; port -> p_med_cap_enabled |= LLDP_MED_CAP_CAP ; break ; case LLDP_TLV_MED_POLICY : CHECK_TLV_SIZE ( 8 , \"LLDP-MED<S2SV_blank>policy\" ) ; policy = PEEK_UINT32 ; if ( ( ( policy >> 24 ) < 1 ) || ( ( policy >> 24 ) > LLDP_MED_APPTYPE_LAST ) ) { log_info ( \"lldp\" , \"unknown<S2SV_blank>policy<S2SV_blank>field<S2SV_blank>%d<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , policy , hardware -> h_ifname ) ; break ; } port -> p_med_policy [ ( policy >> 24 ) - 1 ] . type = ( policy >> 24 ) ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . unknown = ( ( policy & 0x800000 ) != 0 ) ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . tagged = ( ( policy & 0x400000 ) != 0 ) ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . vid = ( policy & 0x001FFE00 ) >> 9 ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . priority = ( policy & 0x1C0 ) >> 6 ; port -> p_med_policy [ ( policy >> 24 ) - 1 ] . dscp = policy & 0x3F ; port -> p_med_cap_enabled |= LLDP_MED_CAP_POLICY ; break ; case LLDP_TLV_MED_LOCATION : CHECK_TLV_SIZE ( 5 , \"LLDP-MED<S2SV_blank>Location\" ) ; loctype = PEEK_UINT8 ; if ( ( loctype < 1 ) || ( loctype > LLDP_MED_LOCFORMAT_LAST ) ) { log_info ( \"lldp\" , \"unknown<S2SV_blank>location<S2SV_blank>type<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; break ; } if ( ( port -> p_med_location [ loctype - 1 ] . data = ( char * ) malloc ( tlv_size - 5 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>LLDP-MED<S2SV_blank>location<S2SV_blank>for<S2SV_blank>\" \"frame<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( port -> p_med_location [ loctype - 1 ] . data , tlv_size - 5 ) ; port -> p_med_location [ loctype - 1 ] . data_len = tlv_size - 5 ; port -> p_med_location [ loctype - 1 ] . format = loctype ; port -> p_med_cap_enabled |= LLDP_MED_CAP_LOCATION ; break ; case LLDP_TLV_MED_MDI : CHECK_TLV_SIZE ( 7 , \"LLDP-MED<S2SV_blank>PoE-MDI\" ) ; power = PEEK_UINT8 ; switch ( power & 0xC0 ) { case 0x0 : port -> p_med_power . devicetype = LLDP_MED_POW_TYPE_PSE ; port -> p_med_cap_enabled |= LLDP_MED_CAP_MDI_PSE ; switch ( power & 0x30 ) { case 0x0 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_UNKNOWN ; break ; case 0x10 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_PRIMARY ; break ; case 0x20 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_BACKUP ; break ; default : port -> p_med_power . source = LLDP_MED_POW_SOURCE_RESERVED ; } break ; case 0x40 : port -> p_med_power . devicetype = LLDP_MED_POW_TYPE_PD ; port -> p_med_cap_enabled |= LLDP_MED_CAP_MDI_PD ; switch ( power & 0x30 ) { case 0x0 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_UNKNOWN ; break ; case 0x10 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_PSE ; break ; case 0x20 : port -> p_med_power . source = LLDP_MED_POW_SOURCE_LOCAL ; break ; default : port -> p_med_power . source = LLDP_MED_POW_SOURCE_BOTH ; } break ; default : port -> p_med_power . devicetype = LLDP_MED_POW_TYPE_RESERVED ; } if ( ( power & 0x0F ) > LLDP_MED_POW_PRIO_LOW ) port -> p_med_power . priority = LLDP_MED_POW_PRIO_UNKNOWN ; else port -> p_med_power . priority = power & 0x0F ; port -> p_med_power . val = PEEK_UINT16 ; break ; case LLDP_TLV_MED_IV_HW : case LLDP_TLV_MED_IV_SW : case LLDP_TLV_MED_IV_FW : case LLDP_TLV_MED_IV_SN : case LLDP_TLV_MED_IV_MANUF : case LLDP_TLV_MED_IV_MODEL : case LLDP_TLV_MED_IV_ASSET : if ( tlv_size <= 4 ) b = NULL ; else { if ( ( b = ( char * ) malloc ( tlv_size - 3 ) ) == NULL ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>\" \"memory<S2SV_blank>for<S2SV_blank>LLDP-MED<S2SV_blank>\" \"inventory<S2SV_blank>for<S2SV_blank>frame<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } PEEK_BYTES ( b , tlv_size - 4 ) ; b [ tlv_size - 4 ] = '\\\\0' ; } switch ( tlv_subtype ) { case LLDP_TLV_MED_IV_HW : chassis -> c_med_hw = b ; break ; case LLDP_TLV_MED_IV_FW : chassis -> c_med_fw = b ; break ; case LLDP_TLV_MED_IV_SW : chassis -> c_med_sw = b ; break ; case LLDP_TLV_MED_IV_SN : chassis -> c_med_sn = b ; break ; case LLDP_TLV_MED_IV_MANUF : chassis -> c_med_manuf = b ; break ; case LLDP_TLV_MED_IV_MODEL : chassis -> c_med_model = b ; break ; case LLDP_TLV_MED_IV_ASSET : chassis -> c_med_asset = b ; break ; } port -> p_med_cap_enabled |= LLDP_MED_CAP_IV ; break ; default : hardware -> h_rx_unrecognized_cnt ++ ; } # endif } else if ( memcmp ( dcbx , orgid , sizeof ( orgid ) ) == 0 ) { log_debug ( \"lldp\" , \"unsupported<S2SV_blank>DCBX<S2SV_blank>tlv<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>ignore\" , hardware -> h_ifname ) ; hardware -> h_rx_unrecognized_cnt ++ ; } else { log_debug ( \"lldp\" , \"unknown<S2SV_blank>org<S2SV_blank>tlv<S2SV_blank>[%02x:%02x:%02x]<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , orgid [ 0 ] , orgid [ 1 ] , orgid [ 2 ] , hardware -> h_ifname ) ; hardware -> h_rx_unrecognized_cnt ++ ; # ifdef ENABLE_CUSTOM custom = ( struct lldpd_custom * ) calloc ( 1 , sizeof ( struct lldpd_custom ) ) ; if ( ! custom ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>custom<S2SV_blank>TLV\" ) ; goto malformed ; } custom -> oui_info_len = tlv_size > 4 ? tlv_size - 4 : 0 ; memcpy ( custom -> oui , orgid , sizeof ( custom -> oui ) ) ; custom -> subtype = tlv_subtype ; if ( custom -> oui_info_len > 0 ) { custom -> oui_info = malloc ( custom -> oui_info_len ) ; if ( ! custom -> oui_info ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>custom<S2SV_blank>TLV<S2SV_blank>data\" ) ; goto malformed ; } PEEK_BYTES ( custom -> oui_info , custom -> oui_info_len ) ; } TAILQ_INSERT_TAIL ( & port -> p_custom_list , custom , next ) ; custom = NULL ; # endif } break ; default : log_warnx ( \"lldp\" , \"unknown<S2SV_blank>tlv<S2SV_blank>(%d)<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , tlv_type , hardware -> h_ifname ) ; goto malformed ; } if ( pos > tlv + tlv_size ) { log_warnx ( \"lldp\" , \"BUG:<S2SV_blank>already<S2SV_blank>past<S2SV_blank>TLV!\" ) ; goto malformed ; } PEEK_DISCARD ( tlv + tlv_size - pos ) ; } if ( ( chassis -> c_id == NULL ) || ( port -> p_id == NULL ) || ( ! ttl_received ) || ( gotend == 0 ) ) { log_warnx ( \"lldp\" , \"some<S2SV_blank>mandatory<S2SV_blank>tlv<S2SV_blank>are<S2SV_blank>missing<S2SV_blank>for<S2SV_blank>frame<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname ) ; goto malformed ; } * newchassis = chassis ; * newport = port ; return 1 ; malformed : # ifdef ENABLE_CUSTOM free ( custom ) ; # endif # ifdef ENABLE_DOT1 free ( vlan ) ; free ( pi ) ; # endif lldpd_chassis_cleanup ( chassis , 1 ) ; lldpd_port_cleanup ( port , 1 ) ; free ( port ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { if <S2SV_ModEnd> ( errno == <S2SV_ModStart> == ENOMEM ) <S2SV_ModEnd> log_warn ( \"lldp\" <S2SV_ModStart> , \"unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>management<S2SV_blank>address\" ) ; else log_warn ( \"lldp\" , \"too<S2SV_blank>large<S2SV_blank>management<S2SV_blank>address<S2SV_blank>\" \"received<S2SV_blank>on<S2SV_blank>%s\" , hardware -> h_ifname\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3817\n\n```\nCWE-416 void comps_objmrtree_unite ( COMPS_ObjMRTree * rt1 , COMPS_ObjMRTree * rt2 ) { COMPS_HSList * tmplist , * tmp_subnodes ; COMPS_HSListItem * it ; COMPS_ObjListIt * it2 ; struct Pair { COMPS_HSList * subnodes ; char * key ; <S2SV_StartBug> char added ; <S2SV_EndBug> } * pair , * parent_pair ; pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = rt2 -> subnodes ; pair -> key = NULL ; tmplist = comps_hslist_create ( ) ; comps_hslist_init ( tmplist , NULL , NULL , & free ) ; comps_hslist_append ( tmplist , pair , 0 ) ; while ( tmplist -> first != NULL ) { it = tmplist -> first ; comps_hslist_remove ( tmplist , tmplist -> first ) ; tmp_subnodes = ( ( struct Pair * ) it -> data ) -> subnodes ; parent_pair = ( struct Pair * ) it -> data ; free ( it ) ; <S2SV_StartBug> pair -> added = 0 ; <S2SV_EndBug> for ( it = tmp_subnodes -> first ; it != NULL ; it = it -> next ) { pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = ( ( COMPS_ObjMRTreeData * ) it -> data ) -> subnodes ; if ( parent_pair -> key != NULL ) { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key ) + strlen ( parent_pair -> key ) + 1 ) ) ; memcpy ( pair -> key , parent_pair -> key , sizeof ( char ) * strlen ( parent_pair -> key ) ) ; memcpy ( pair -> key + strlen ( parent_pair -> key ) , ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } else { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key ) + 1 ) ) ; memcpy ( pair -> key , ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } if ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> data -> first != NULL ) { for ( it2 = ( ( COMPS_ObjMRTreeData * ) it -> data ) -> data -> first ; it2 != NULL ; it2 = it2 -> next ) { comps_objmrtree_set ( rt1 , pair -> key , it2 -> comps_obj ) ; } if ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } else { if ( ( ( COMPS_ObjMRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } } free ( parent_pair -> key ) ; free ( parent_pair ) ; } comps_hslist_destroy ( & tmplist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * key ; <S2SV_ModEnd> } * pair <S2SV_ModStart> it ) ; <S2SV_ModEnd> for ( it\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4591\n\n```\nCWE-119 static ssize_t __nfs4_get_acl_uncached ( struct inode * inode , void * buf , size_t buflen ) { struct page * pages [ NFS4ACL_MAXPAGES ] = { NULL , } ; struct nfs_getaclargs args = { . fh = NFS_FH ( inode ) , . acl_pages = pages , . acl_len = buflen , } ; struct nfs_getaclres res = { . acl_len = buflen , } ; struct rpc_message msg = { . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_GETACL ] , . rpc_argp = & args , . rpc_resp = & res , } ; unsigned int npages = DIV_ROUND_UP ( buflen , PAGE_SIZE ) ; int ret = - ENOMEM , i ; if ( npages == 0 ) npages = 1 ; if ( npages > ARRAY_SIZE ( pages ) ) return - ERANGE ; for ( i = 0 ; i < npages ; i ++ ) { pages [ i ] = alloc_page ( GFP_KERNEL ) ; if ( ! pages [ i ] ) goto out_free ; } res . acl_scratch = alloc_page ( GFP_KERNEL ) ; if ( ! res . acl_scratch ) goto out_free ; args . acl_len = npages * PAGE_SIZE ; args . acl_pgbase = 0 ; dprintk ( \"%s<S2SV_blank><S2SV_blank>buf<S2SV_blank>%p<S2SV_blank>buflen<S2SV_blank>%zu<S2SV_blank>npages<S2SV_blank>%d<S2SV_blank>args.acl_len<S2SV_blank>%zu\\\\n\" , __func__ , buf , buflen , npages , args . acl_len ) ; ret = nfs4_call_sync ( NFS_SERVER ( inode ) -> client , NFS_SERVER ( inode ) , & msg , & args . seq_args , & res . seq_res , 0 ) ; if ( ret ) goto out_free ; if ( res . acl_flags & NFS4_ACL_TRUNC ) { if ( buf == NULL ) goto out_ok ; ret = - ERANGE ; goto out_free ; } nfs4_write_cached_acl ( inode , pages , res . acl_data_offset , res . acl_len ) ; <S2SV_StartBug> if ( buf ) <S2SV_EndBug> <S2SV_StartBug> _copy_from_pages ( buf , pages , res . acl_data_offset , res . acl_len ) ; <S2SV_EndBug> out_ok : ret = res . acl_len ; out_free : for ( i = 0 ; i < npages ; i ++ ) if ( pages [ i ] ) __free_page ( pages [ i ] ) ; if ( res . acl_scratch ) __free_page ( res . acl_scratch ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( buf ) { if ( res . acl_len > buflen ) { ret = - ERANGE ; goto out_free ; } <S2SV_ModStart> acl_len ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9990\n\n```\nCWE-119 static uint32_t color_string_to_rgba ( const char * p , int len ) { uint32_t ret = 0xFF000000 ; const ColorEntry * entry ; char color_name [ 100 ] ; <S2SV_StartBug> if ( * p == '#' ) { <S2SV_EndBug> p ++ ; len -- ; if ( len == 3 ) { ret |= ( hex_char_to_number ( p [ 2 ] ) << 4 ) | ( hex_char_to_number ( p [ 1 ] ) << 12 ) | ( hex_char_to_number ( p [ 0 ] ) << 20 ) ; } else if ( len == 4 ) { ret = ( hex_char_to_number ( p [ 3 ] ) << 4 ) | ( hex_char_to_number ( p [ 2 ] ) << 12 ) | ( hex_char_to_number ( p [ 1 ] ) << 20 ) | ( hex_char_to_number ( p [ 0 ] ) << 28 ) ; } else if ( len == 6 ) { ret |= hex_char_to_number ( p [ 5 ] ) | ( hex_char_to_number ( p [ 4 ] ) << 4 ) | ( hex_char_to_number ( p [ 3 ] ) << 8 ) | ( hex_char_to_number ( p [ 2 ] ) << 12 ) | ( hex_char_to_number ( p [ 1 ] ) << 16 ) | ( hex_char_to_number ( p [ 0 ] ) << 20 ) ; } else if ( len == 8 ) { ret = hex_char_to_number ( p [ 7 ] ) | ( hex_char_to_number ( p [ 6 ] ) << 4 ) | ( hex_char_to_number ( p [ 5 ] ) << 8 ) | ( hex_char_to_number ( p [ 4 ] ) << 12 ) | ( hex_char_to_number ( p [ 3 ] ) << 16 ) | ( hex_char_to_number ( p [ 2 ] ) << 20 ) | ( hex_char_to_number ( p [ 1 ] ) << 24 ) | ( hex_char_to_number ( p [ 0 ] ) << 28 ) ; } } else { strncpy ( color_name , p , len ) ; color_name [ len ] = '\\\\0' ; entry = bsearch ( color_name , color_table , FF_ARRAY_ELEMS ( color_table ) , sizeof ( ColorEntry ) , color_table_compare ) ; if ( ! entry ) return ret ; ret = entry -> rgb_color ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 100 ] ; len = FFMIN ( FFMAX ( len , 0 ) , sizeof ( color_name ) - 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-5332\n\n```\nCWE-119 int mlx4_register_vlan ( struct mlx4_dev * dev , u8 port , u16 vlan , int * index ) { struct mlx4_vlan_table * table = & mlx4_priv ( dev ) -> port [ port ] . vlan_table ; int i , err = 0 ; int free = - 1 ; mutex_lock ( & table -> mutex ) ; for ( i = MLX4_VLAN_REGULAR ; i < MLX4_MAX_VLAN_NUM ; i ++ ) { if ( free < 0 && ( table -> refs [ i ] == 0 ) ) { free = i ; continue ; } if ( table -> refs [ i ] && ( vlan == ( MLX4_VLAN_MASK & be32_to_cpu ( table -> entries [ i ] ) ) ) ) { * index = i ; ++ table -> refs [ i ] ; goto out ; <S2SV_StartBug> } <S2SV_EndBug> } if ( table -> total == table -> max ) { err = - ENOSPC ; goto out ; } table -> refs [ free ] = 1 ; table -> entries [ free ] = cpu_to_be32 ( vlan | MLX4_VLAN_VALID ) ; err = mlx4_set_port_vlan_table ( dev , port , table -> entries ) ; if ( unlikely ( err ) ) { mlx4_warn ( dev , \"Failed<S2SV_blank>adding<S2SV_blank>vlan:<S2SV_blank>%u\\\\n\" , vlan ) ; table -> refs [ free ] = 0 ; table -> entries [ free ] = 0 ; goto out ; } * index = free ; ++ table -> total ; out : mutex_unlock ( & table -> mutex ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ; } } if ( free < 0 ) { err = - ENOMEM ; goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4998\n\n```\nCWE-119 static int check_entry_size_and_hooks ( struct ipt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ipt_entry ) != 0 || <S2SV_StartBug> ( unsigned char * ) e + sizeof ( struct ipt_entry ) >= limit ) { <S2SV_EndBug> duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ipt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ipt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> void nfs4_close_sync ( struct path * path , struct nfs4_state * state , mode_t mode ) <S2SV_EndBug> { <S2SV_StartBug> __nfs4_close ( path , state , mode , 1 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * state , fmode_t fmode <S2SV_ModEnd> ) { __nfs4_close <S2SV_ModStart> , state , fmode <S2SV_ModEnd> , 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t image2yuvconfig ( const vpx_image_t * img , YV12_BUFFER_CONFIG * yv12 ) { <S2SV_StartBug> vpx_codec_err_t res = VPX_CODEC_OK ; <S2SV_EndBug> yv12 -> y_buffer = img -> planes [ VPX_PLANE_Y ] ; yv12 -> u_buffer = img -> planes [ VPX_PLANE_U ] ; yv12 -> v_buffer = img -> planes [ VPX_PLANE_V ] ; <S2SV_StartBug> yv12 -> y_crop_width = img -> d_w ; <S2SV_EndBug> <S2SV_StartBug> yv12 -> y_crop_height = img -> d_h ; <S2SV_EndBug> <S2SV_StartBug> yv12 -> y_width = img -> d_w ; <S2SV_EndBug> <S2SV_StartBug> yv12 -> y_height = img -> d_h ; <S2SV_EndBug> <S2SV_StartBug> yv12 -> uv_width = ( 1 + yv12 -> y_width ) / 2 ; <S2SV_EndBug> <S2SV_StartBug> yv12 -> uv_height = ( 1 + yv12 -> y_height ) / 2 ; <S2SV_EndBug> yv12 -> y_stride = img -> stride [ VPX_PLANE_Y ] ; yv12 -> uv_stride = img -> stride [ VPX_PLANE_U ] ; yv12 -> border = ( img -> stride [ VPX_PLANE_Y ] - img -> w ) / 2 ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> yv12 ) { const int y_w = img -> d_w ; const int y_h = img -> d_h ; const int uv_w = ( img -> d_w + 1 ) / 2 ; const int uv_h = ( img -> d_h + 1 ) / 2 ; <S2SV_ModStart> -> y_crop_width = y_w <S2SV_ModEnd> ; yv12 -> <S2SV_ModStart> -> y_crop_height = y_h <S2SV_ModEnd> ; yv12 -> <S2SV_ModStart> -> y_width = y_w <S2SV_ModEnd> ; yv12 -> <S2SV_ModStart> -> y_height = y_h ; yv12 -> uv_crop_width = uv_w ; yv12 -> uv_crop_height = uv_h <S2SV_ModEnd> ; yv12 -> <S2SV_ModStart> -> uv_width = uv_w ; yv12 -> uv_height = uv_h ; yv12 -> y_stride = img -> stride [ VPX_PLANE_Y ] ; yv12 -> uv_stride = img -> stride [ VPX_PLANE_U ] ; yv12 -> border = ( img -> stride [ VPX_PLANE_Y ] - img -> w <S2SV_ModEnd> ) / 2 <S2SV_ModStart> / 2 ; <S2SV_ModEnd> return res ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6198\n\n```\nCWE-59 void init_rc ( void ) { int i ; struct stat st ; FILE * f ; if ( rc_dir != NULL ) goto open_rc ; rc_dir = expandPath ( RC_DIR ) ; i = strlen ( rc_dir ) ; if ( i > 1 && rc_dir [ i - 1 ] == '/' ) rc_dir [ i - 1 ] = '\\\\0' ; # ifdef USE_M17N display_charset_str = wc_get_ces_list ( ) ; document_charset_str = display_charset_str ; system_charset_str = display_charset_str ; # endif if ( stat ( rc_dir , & st ) < 0 ) { if ( errno == ENOENT ) { if ( do_mkdir ( rc_dir , 0700 ) < 0 ) { goto rc_dir_err ; } else { stat ( rc_dir , & st ) ; } } else { goto rc_dir_err ; } } if ( ! S_ISDIR ( st . st_mode ) ) { goto rc_dir_err ; } if ( ! ( st . st_mode & S_IWUSR ) ) { goto rc_dir_err ; } no_rc_dir = FALSE ; tmp_dir = rc_dir ; if ( config_file == NULL ) config_file = rcFile ( CONFIG_FILE ) ; create_option_search_table ( ) ; open_rc : if ( ( f = fopen ( etcFile ( W3MCONFIG ) , \"rt\" ) ) != NULL ) { interpret_rc ( f ) ; fclose ( f ) ; } if ( ( f = fopen ( confFile ( CONFIG_FILE ) , \"rt\" ) ) != NULL ) { interpret_rc ( f ) ; fclose ( f ) ; } if ( config_file && ( f = fopen ( config_file , \"rt\" ) ) != NULL ) { interpret_rc ( f ) ; fclose ( f ) ; } return ; rc_dir_err : no_rc_dir = TRUE ; if ( ( ( tmp_dir = getenv ( \"TMPDIR\" ) ) == NULL || * tmp_dir == '\\\\0' ) && ( ( tmp_dir = getenv ( \"TMP\" ) ) == NULL || * tmp_dir == '\\\\0' ) && ( ( tmp_dir = getenv ( \"TEMP\" ) ) == NULL || * tmp_dir == '\\\\0' ) ) tmp_dir = \"/tmp\" ; <S2SV_StartBug> create_option_search_table ( ) ; <S2SV_EndBug> goto open_rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = \"/tmp\" ; # ifdef HAVE_MKDTEMP tmp_dir = mkdtemp ( Strnew_m_charp ( tmp_dir , \"/w3m-XXXXXX\" , NULL ) -> ptr ) ; if ( tmp_dir == NULL ) tmp_dir = rc_dir ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13027\n\n```\nCWE-125 static int lldp_mgmt_addr_tlv_print ( netdissect_options * ndo , const u_char * pptr , u_int len ) { uint8_t mgmt_addr_len , intf_num_subtype , oid_len ; const u_char * tptr ; u_int tlen ; char * mgmt_addr ; tlen = len ; tptr = pptr ; if ( tlen < 1 ) { return 0 ; } mgmt_addr_len = * tptr ++ ; tlen -- ; if ( tlen < mgmt_addr_len ) { return 0 ; } mgmt_addr = lldp_network_addr_print ( ndo , tptr , mgmt_addr_len ) ; if ( mgmt_addr == NULL ) { return 0 ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Management<S2SV_blank>Address<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>%s\" , mgmt_addr_len , mgmt_addr ) ) ; tptr += mgmt_addr_len ; tlen -= mgmt_addr_len ; if ( tlen < LLDP_INTF_NUM_LEN ) { return 0 ; } intf_num_subtype = * tptr ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Interface<S2SV_blank>Numbering<S2SV_blank>(%u):<S2SV_blank>%u\" , tok2str ( lldp_intf_numb_subtype_values , \"Unknown\" , intf_num_subtype ) , intf_num_subtype , EXTRACT_32BITS ( tptr + 1 ) ) ) ; tptr += LLDP_INTF_NUM_LEN ; tlen -= LLDP_INTF_NUM_LEN ; if ( tlen ) { oid_len = * tptr ; <S2SV_StartBug> if ( tlen < oid_len ) { <S2SV_EndBug> return 0 ; } if ( oid_len ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>OID<S2SV_blank>length<S2SV_blank>%u\" , oid_len ) ) ; safeputs ( ndo , tptr + 1 , oid_len ) ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( tlen < 1U +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4997\n\n```\nCWE-264 static inline int check_entry_size_and_hooks ( struct arpt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct arpt_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct arpt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct arpt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } if ( ! arp_checkentry ( & e -> arp ) ) return - EINVAL ; <S2SV_StartBug> err = xt_check_entry_offsets ( e , e -> target_offset , e -> next_offset ) ; <S2SV_EndBug> if ( err ) return err ; for ( h = 0 ; h < NF_ARP_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_debug ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , e -> elems , e ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13186\n\n```\nCWE-20 WORD32 ih264d_read_mmco_commands ( struct _DecStruct * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; <S2SV_StartBug> dpb_commands_t * ps_dpb_cmds = ps_dec -> ps_dpb_cmds ; <S2SV_EndBug> dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; WORD32 j ; UWORD8 u1_buf_mode ; struct MMCParams * ps_mmc_params ; UWORD32 * pu4_bitstrm_buf = ps_dec -> ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; UWORD32 u4_bit_ofst = ps_dec -> ps_bitstrm -> u4_ofst ; ps_slice -> u1_mmco_equalto5 = 0 ; { if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_slice -> u1_no_output_of_prior_pics_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>no_output_of_prior_pics_flag\" , ps_slice -> u1_no_output_of_prior_pics_flag ) ; ps_slice -> u1_long_term_reference_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>long_term_reference_flag\" , ps_slice -> u1_long_term_reference_flag ) ; ps_dpb_cmds -> u1_idr_pic = 1 ; ps_dpb_cmds -> u1_no_output_of_prior_pics_flag = ps_slice -> u1_no_output_of_prior_pics_flag ; ps_dpb_cmds -> u1_long_term_reference_flag = ps_slice -> u1_long_term_reference_flag ; } else { u1_buf_mode = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>adaptive_ref_pic_buffering_flag\" , u1_buf_mode ) ; ps_dpb_cmds -> u1_buf_mode = u1_buf_mode ; j = 0 ; if ( u1_buf_mode == 1 ) { UWORD32 u4_mmco ; UWORD32 u4_diff_pic_num ; UWORD32 u4_lt_idx , u4_max_lt_idx ; u4_mmco = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; while ( u4_mmco != END_OF_MMCO ) { if ( j >= MAX_REF_BUFS ) { # ifdef __ANDROID__ ALOGE ( \"b/25818142\" ) ; android_errorWriteLog ( 0x534e4554 , \"25818142\" ) ; # endif ps_dpb_cmds -> u1_num_of_commands = 0 ; return - 1 ; } ps_mmc_params = & ps_dpb_cmds -> as_mmc_params [ j ] ; ps_mmc_params -> u4_mmco = u4_mmco ; switch ( u4_mmco ) { case MARK_ST_PICNUM_AS_NONREF : u4_diff_pic_num = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_diff_pic_num = u4_diff_pic_num ; break ; case MARK_LT_INDEX_AS_NONREF : u4_lt_idx = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_lt_idx = u4_lt_idx ; break ; case MARK_ST_PICNUM_AS_LT_INDEX : u4_diff_pic_num = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_diff_pic_num = u4_diff_pic_num ; u4_lt_idx = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_lt_idx = u4_lt_idx ; break ; case SET_MAX_LT_INDEX : { u4_max_lt_idx = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_max_lt_idx_plus1 = u4_max_lt_idx ; break ; } case RESET_REF_PICTURES : { ps_slice -> u1_mmco_equalto5 = 1 ; break ; } case SET_LT_INDEX : u4_lt_idx = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; ps_mmc_params -> u4_lt_idx = u4_lt_idx ; break ; default : break ; } u4_mmco = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; j ++ ; } ps_dpb_cmds -> u1_num_of_commands = j ; } } ps_dpb_cmds -> u1_dpb_commands_read = 1 ; ps_dpb_cmds -> u1_dpb_commands_read_slc = 1 ; } u4_bit_ofst = ps_dec -> ps_bitstrm -> u4_ofst - u4_bit_ofst ; return u4_bit_ofst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ps_dpb_cmds = & ( ps_dec -> s_dpb_cmds_scratch ) <S2SV_ModEnd> ; dec_slice_params_t *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6712\n\n```\nCWE-119 <S2SV_StartBug> static void iwl_sta_ucode_activate ( struct iwl_priv * priv , u8 sta_id ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> if ( ! ( priv -> stations [ sta_id ] . used & IWL_STA_DRIVER_ACTIVE ) ) IWL_ERR ( priv , \"ACTIVATE<S2SV_blank>a<S2SV_blank>non<S2SV_blank>DRIVER<S2SV_blank>active<S2SV_blank>station<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>\" \"addr<S2SV_blank>%pM\\\\n\" , sta_id , priv -> stations [ sta_id ] . sta . sta . addr ) ; if ( priv -> stations [ sta_id ] . used & IWL_STA_UCODE_ACTIVE ) { IWL_DEBUG_ASSOC ( priv , \"STA<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>addr<S2SV_blank>%pM<S2SV_blank>already<S2SV_blank>present<S2SV_blank>in<S2SV_blank>uCode<S2SV_blank>\" \"(according<S2SV_blank>to<S2SV_blank>driver)\\\\n\" , sta_id , priv -> stations [ sta_id ] . sta . sta . addr ) ; } else { priv -> stations [ sta_id ] . used |= IWL_STA_UCODE_ACTIVE ; IWL_DEBUG_ASSOC ( priv , \"Added<S2SV_blank>STA<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>addr<S2SV_blank>%pM<S2SV_blank>to<S2SV_blank>uCode\\\\n\" , sta_id , priv -> stations [ sta_id ] . sta . sta . addr ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> iwl_sta_ucode_activate ( struct <S2SV_ModStart> sta_id ) { if ( sta_id >= IWLAGN_STATION_COUNT ) { IWL_ERR ( priv , \"invalid<S2SV_blank>sta_id<S2SV_blank>%u\" , sta_id ) ; return - EINVAL ; } <S2SV_ModStart> ) ; } return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13686\n\n```\nCWE-476 static int inet_rtm_getroute ( struct sk_buff * in_skb , struct nlmsghdr * nlh , struct netlink_ext_ack * extack ) { struct net * net = sock_net ( in_skb -> sk ) ; struct rtmsg * rtm ; struct nlattr * tb [ RTA_MAX + 1 ] ; struct fib_result res = { } ; struct rtable * rt = NULL ; struct flowi4 fl4 ; __be32 dst = 0 ; __be32 src = 0 ; u32 iif ; int err ; int mark ; struct sk_buff * skb ; u32 table_id = RT_TABLE_MAIN ; kuid_t uid ; err = nlmsg_parse ( nlh , sizeof ( * rtm ) , tb , RTA_MAX , rtm_ipv4_policy , extack ) ; if ( err < 0 ) goto errout ; rtm = nlmsg_data ( nlh ) ; skb = alloc_skb ( NLMSG_GOODSIZE , GFP_KERNEL ) ; if ( ! skb ) { err = - ENOBUFS ; goto errout ; } skb_reset_mac_header ( skb ) ; skb_reset_network_header ( skb ) ; src = tb [ RTA_SRC ] ? nla_get_in_addr ( tb [ RTA_SRC ] ) : 0 ; dst = tb [ RTA_DST ] ? nla_get_in_addr ( tb [ RTA_DST ] ) : 0 ; iif = tb [ RTA_IIF ] ? nla_get_u32 ( tb [ RTA_IIF ] ) : 0 ; mark = tb [ RTA_MARK ] ? nla_get_u32 ( tb [ RTA_MARK ] ) : 0 ; if ( tb [ RTA_UID ] ) uid = make_kuid ( current_user_ns ( ) , nla_get_u32 ( tb [ RTA_UID ] ) ) ; else uid = ( iif ? INVALID_UID : current_uid ( ) ) ; ip_hdr ( skb ) -> protocol = IPPROTO_UDP ; ip_hdr ( skb ) -> saddr = src ; ip_hdr ( skb ) -> daddr = dst ; skb_reserve ( skb , MAX_HEADER + sizeof ( struct iphdr ) ) ; memset ( & fl4 , 0 , sizeof ( fl4 ) ) ; fl4 . daddr = dst ; fl4 . saddr = src ; fl4 . flowi4_tos = rtm -> rtm_tos ; fl4 . flowi4_oif = tb [ RTA_OIF ] ? nla_get_u32 ( tb [ RTA_OIF ] ) : 0 ; fl4 . flowi4_mark = mark ; fl4 . flowi4_uid = uid ; rcu_read_lock ( ) ; if ( iif ) { struct net_device * dev ; dev = dev_get_by_index_rcu ( net , iif ) ; if ( ! dev ) { err = - ENODEV ; goto errout_free ; } skb -> protocol = htons ( ETH_P_IP ) ; skb -> dev = dev ; skb -> mark = mark ; err = ip_route_input_rcu ( skb , dst , src , rtm -> rtm_tos , dev , & res ) ; rt = skb_rtable ( skb ) ; if ( err == 0 && rt -> dst . error ) err = - rt -> dst . error ; } else { rt = ip_route_output_key_hash_rcu ( net , & fl4 , & res , skb ) ; err = 0 ; if ( IS_ERR ( rt ) ) err = PTR_ERR ( rt ) ; else skb_dst_set ( skb , & rt -> dst ) ; } if ( err ) goto errout_free ; if ( rtm -> rtm_flags & RTM_F_NOTIFY ) rt -> rt_flags |= RTCF_NOTIFY ; if ( rtm -> rtm_flags & RTM_F_LOOKUP_TABLE ) table_id = rt -> rt_table_id ; if ( rtm -> rtm_flags & RTM_F_FIB_MATCH ) <S2SV_StartBug> err = fib_dump_info ( skb , NETLINK_CB ( in_skb ) . portid , <S2SV_EndBug> nlh -> nlmsg_seq , RTM_NEWROUTE , table_id , rt -> rt_type , res . prefix , res . prefixlen , fl4 . flowi4_tos , res . fi , 0 ) ; else err = rt_fill_info ( net , dst , src , table_id , & fl4 , skb , NETLINK_CB ( in_skb ) . portid , nlh -> nlmsg_seq ) ; if ( err < 0 ) goto errout_free ; <S2SV_StartBug> rcu_read_unlock ( ) ; <S2SV_EndBug> err = rtnl_unicast ( skb , net , NETLINK_CB ( in_skb ) . portid ) ; errout : return err ; errout_free : rcu_read_unlock ( ) ; kfree_skb ( skb ) ; goto errout ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & RTM_F_FIB_MATCH ) { if ( ! res . fi ) { err = fib_props [ res . type ] . error ; if ( ! err ) err = - EHOSTUNREACH ; <S2SV_ModEnd> goto errout_free ; <S2SV_ModStart> goto errout_free ; } err = fib_dump_info ( skb , NETLINK_CB ( in_skb ) . portid , nlh -> nlmsg_seq , RTM_NEWROUTE , table_id , rt -> rt_type , res . prefix , res . prefixlen , fl4 . flowi4_tos , res . fi , 0 ) ; } else { err = rt_fill_info ( net , dst , src , table_id , & fl4 , skb , NETLINK_CB ( in_skb ) . portid , nlh -> nlmsg_seq ) ; } if ( err < 0 ) goto errout_free ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 void bta_hl_co_put_rx_data ( UINT8 app_id , tBTA_HL_MDL_HANDLE mdl_handle , UINT16 data_size , UINT8 * p_data , UINT16 evt ) { UINT8 app_idx , mcl_idx , mdl_idx ; btif_hl_mdl_cb_t * p_dcb ; tBTA_HL_STATUS status = BTA_HL_STATUS_FAIL ; int r ; BTIF_TRACE_DEBUG ( \"%s<S2SV_blank>app_id=%d<S2SV_blank>mdl_handle=0x%x<S2SV_blank>data_size=%d\" , __FUNCTION__ , app_id , mdl_handle , data_size ) ; if ( btif_hl_find_mdl_idx_using_handle ( mdl_handle , & app_idx , & mcl_idx , & mdl_idx ) ) { p_dcb = BTIF_HL_GET_MDL_CB_PTR ( app_idx , mcl_idx , mdl_idx ) ; if ( ( p_dcb -> p_rx_pkt = ( UINT8 * ) btif_hl_get_buf ( data_size ) ) != NULL ) { memcpy ( p_dcb -> p_rx_pkt , p_data , data_size ) ; if ( p_dcb -> p_scb ) { BTIF_TRACE_DEBUG ( \"app_idx=%d<S2SV_blank>mcl_idx=0x%x<S2SV_blank>mdl_idx=0x%x<S2SV_blank>data_size=%d\" , app_idx , mcl_idx , mdl_idx , data_size ) ; <S2SV_StartBug> r = send ( p_dcb -> p_scb -> socket_id [ 1 ] , p_dcb -> p_rx_pkt , data_size , 0 ) ; <S2SV_EndBug> if ( r == data_size ) { BTIF_TRACE_DEBUG ( \"socket<S2SV_blank>send<S2SV_blank>success<S2SV_blank>data_size=%d\" , data_size ) ; status = BTA_HL_STATUS_OK ; } else { BTIF_TRACE_ERROR ( \"socket<S2SV_blank>send<S2SV_blank>failed<S2SV_blank>r=%d<S2SV_blank>data_size=%d\" , r , data_size ) ; } } btif_hl_free_buf ( ( void * * ) & p_dcb -> p_rx_pkt ) ; } } bta_hl_ci_put_rx_data ( mdl_handle , status , evt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; r = TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8645\n\n```\nCWE-284 static int tcp_v6_rcv ( struct sk_buff * skb ) { const struct tcphdr * th ; const struct ipv6hdr * hdr ; bool refcounted ; struct sock * sk ; int ret ; struct net * net = dev_net ( skb -> dev ) ; if ( skb -> pkt_type != PACKET_HOST ) goto discard_it ; __TCP_INC_STATS ( net , TCP_MIB_INSEGS ) ; if ( ! pskb_may_pull ( skb , sizeof ( struct tcphdr ) ) ) goto discard_it ; th = ( const struct tcphdr * ) skb -> data ; if ( unlikely ( th -> doff < sizeof ( struct tcphdr ) / 4 ) ) goto bad_packet ; if ( ! pskb_may_pull ( skb , th -> doff * 4 ) ) goto discard_it ; if ( skb_checksum_init ( skb , IPPROTO_TCP , ip6_compute_pseudo ) ) goto csum_error ; th = ( const struct tcphdr * ) skb -> data ; hdr = ipv6_hdr ( skb ) ; lookup : sk = __inet6_lookup_skb ( & tcp_hashinfo , skb , __tcp_hdrlen ( th ) , th -> source , th -> dest , inet6_iif ( skb ) , & refcounted ) ; if ( ! sk ) goto no_tcp_socket ; process : if ( sk -> sk_state == TCP_TIME_WAIT ) goto do_time_wait ; if ( sk -> sk_state == TCP_NEW_SYN_RECV ) { struct request_sock * req = inet_reqsk ( sk ) ; struct sock * nsk ; sk = req -> rsk_listener ; tcp_v6_fill_cb ( skb , hdr , th ) ; if ( tcp_v6_inbound_md5_hash ( sk , skb ) ) { sk_drops_add ( sk , skb ) ; reqsk_put ( req ) ; goto discard_it ; } if ( unlikely ( sk -> sk_state != TCP_LISTEN ) ) { inet_csk_reqsk_queue_drop_and_put ( sk , req ) ; goto lookup ; } sock_hold ( sk ) ; refcounted = true ; nsk = tcp_check_req ( sk , skb , req , false ) ; if ( ! nsk ) { reqsk_put ( req ) ; goto discard_and_relse ; } if ( nsk == sk ) { reqsk_put ( req ) ; tcp_v6_restore_cb ( skb ) ; } else if ( tcp_child_process ( sk , nsk , skb ) ) { tcp_v6_send_reset ( nsk , skb ) ; goto discard_and_relse ; } else { sock_put ( sk ) ; return 0 ; } } if ( hdr -> hop_limit < inet6_sk ( sk ) -> min_hopcount ) { __NET_INC_STATS ( net , LINUX_MIB_TCPMINTTLDROP ) ; goto discard_and_relse ; } if ( ! xfrm6_policy_check ( sk , XFRM_POLICY_IN , skb ) ) goto discard_and_relse ; tcp_v6_fill_cb ( skb , hdr , th ) ; if ( tcp_v6_inbound_md5_hash ( sk , skb ) ) goto discard_and_relse ; <S2SV_StartBug> if ( sk_filter ( sk , skb ) ) <S2SV_EndBug> <S2SV_StartBug> goto discard_and_relse ; <S2SV_EndBug> skb -> dev = NULL ; if ( sk -> sk_state == TCP_LISTEN ) { ret = tcp_v6_do_rcv ( sk , skb ) ; goto put_and_return ; } sk_incoming_cpu_update ( sk ) ; bh_lock_sock_nested ( sk ) ; tcp_segs_in ( tcp_sk ( sk ) , skb ) ; ret = 0 ; if ( ! sock_owned_by_user ( sk ) ) { if ( ! tcp_prequeue ( sk , skb ) ) ret = tcp_v6_do_rcv ( sk , skb ) ; } else if ( tcp_add_backlog ( sk , skb ) ) { goto discard_and_relse ; } bh_unlock_sock ( sk ) ; put_and_return : if ( refcounted ) sock_put ( sk ) ; return ret ? - 1 : 0 ; no_tcp_socket : if ( ! xfrm6_policy_check ( NULL , XFRM_POLICY_IN , skb ) ) goto discard_it ; tcp_v6_fill_cb ( skb , hdr , th ) ; if ( tcp_checksum_complete ( skb ) ) { csum_error : __TCP_INC_STATS ( net , TCP_MIB_CSUMERRORS ) ; bad_packet : __TCP_INC_STATS ( net , TCP_MIB_INERRS ) ; } else { tcp_v6_send_reset ( NULL , skb ) ; } discard_it : kfree_skb ( skb ) ; return 0 ; discard_and_relse : sk_drops_add ( sk , skb ) ; if ( refcounted ) sock_put ( sk ) ; goto discard_it ; do_time_wait : if ( ! xfrm6_policy_check ( NULL , XFRM_POLICY_IN , skb ) ) { inet_twsk_put ( inet_twsk ( sk ) ) ; goto discard_it ; } tcp_v6_fill_cb ( skb , hdr , th ) ; if ( tcp_checksum_complete ( skb ) ) { inet_twsk_put ( inet_twsk ( sk ) ) ; goto csum_error ; } switch ( tcp_timewait_state_process ( inet_twsk ( sk ) , skb , th ) ) { case TCP_TW_SYN : { struct sock * sk2 ; sk2 = inet6_lookup_listener ( dev_net ( skb -> dev ) , & tcp_hashinfo , skb , __tcp_hdrlen ( th ) , & ipv6_hdr ( skb ) -> saddr , th -> source , & ipv6_hdr ( skb ) -> daddr , ntohs ( th -> dest ) , tcp_v6_iif ( skb ) ) ; if ( sk2 ) { struct inet_timewait_sock * tw = inet_twsk ( sk ) ; inet_twsk_deschedule_put ( tw ) ; sk = sk2 ; tcp_v6_restore_cb ( skb ) ; refcounted = false ; goto process ; } } case TCP_TW_ACK : tcp_v6_timewait_ack ( sk , skb ) ; break ; case TCP_TW_RST : tcp_v6_restore_cb ( skb ) ; tcp_v6_send_reset ( sk , skb ) ; inet_twsk_deschedule_put ( inet_twsk ( sk ) ) ; goto discard_it ; case TCP_TW_SUCCESS : ; } goto discard_it ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( tcp_filter <S2SV_ModEnd> ( sk , <S2SV_ModStart> ) goto discard_and_relse ; th = ( const struct tcphdr * ) skb -> data ; hdr = ipv6_hdr ( skb )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4131\n\n```\nCWE-189 static void nfs4_xdr_enc_getacl ( struct rpc_rqst * req , struct xdr_stream * xdr , struct nfs_getaclargs * args ) { struct compound_hdr hdr = { . minorversion = nfs4_xdr_minorversion ( & args -> seq_args ) , } ; uint32_t replen ; encode_compound_hdr ( xdr , req , & hdr ) ; encode_sequence ( xdr , & args -> seq_args , & hdr ) ; encode_putfh ( xdr , args -> fh , & hdr ) ; <S2SV_StartBug> replen = hdr . replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1 ; <S2SV_EndBug> encode_getattr_two ( xdr , FATTR4_WORD0_ACL , 0 , & hdr ) ; xdr_inline_pages ( & req -> rq_rcv_buf , replen << 2 , args -> acl_pages , args -> acl_pgbase , args -> acl_len ) ; <S2SV_StartBug> encode_nops ( & hdr ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + op_decode_hdr_maxsz + <S2SV_ModEnd> 1 ; encode_getattr_two <S2SV_ModStart> acl_len ) ; xdr_set_scratch_buffer ( xdr , page_address ( args -> acl_scratch ) , PAGE_SIZE ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13272\n\n```\nCWE-264 static void ptrace_link ( struct task_struct * child , struct task_struct * new_parent ) { <S2SV_StartBug> rcu_read_lock ( ) ; <S2SV_EndBug> <S2SV_StartBug> __ptrace_link ( child , new_parent , __task_cred ( new_parent ) ) ; <S2SV_EndBug> rcu_read_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> new_parent ) { <S2SV_ModEnd> __ptrace_link ( child <S2SV_ModStart> , new_parent , current_cred ( ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int sock_send_fd ( int sock_fd , const uint8_t * buf , int len , int send_fd ) { ssize_t ret ; struct msghdr msg ; unsigned char * buffer = ( unsigned char * ) buf ; memset ( & msg , 0 , sizeof ( msg ) ) ; struct cmsghdr * cmsg ; char msgbuf [ CMSG_SPACE ( 1 ) ] ; asrt ( send_fd != - 1 ) ; if ( sock_fd == - 1 || send_fd == - 1 ) return - 1 ; msg . msg_control = msgbuf ; msg . msg_controllen = sizeof msgbuf ; cmsg = CMSG_FIRSTHDR ( & msg ) ; cmsg -> cmsg_level = SOL_SOCKET ; cmsg -> cmsg_type = SCM_RIGHTS ; cmsg -> cmsg_len = CMSG_LEN ( sizeof send_fd ) ; memcpy ( CMSG_DATA ( cmsg ) , & send_fd , sizeof send_fd ) ; int ret_len = len ; while ( len > 0 ) { struct iovec iv ; memset ( & iv , 0 , sizeof ( iv ) ) ; iv . iov_base = buffer ; iv . iov_len = len ; msg . msg_iov = & iv ; msg . msg_iovlen = 1 ; do { <S2SV_StartBug> ret = sendmsg ( sock_fd , & msg , MSG_NOSIGNAL ) ; <S2SV_EndBug> } while ( ret < 0 && errno == EINTR ) ; if ( ret < 0 ) { BTIF_TRACE_ERROR ( \"fd:%d,<S2SV_blank>send_fd:%d,<S2SV_blank>sendmsg<S2SV_blank>ret:%d,<S2SV_blank>errno:%d,<S2SV_blank>%s\" , sock_fd , send_fd , ( int ) ret , errno , strerror ( errno ) ) ; ret_len = - 1 ; break ; } buffer += ret ; len -= ret ; memset ( & msg , 0 , sizeof ( msg ) ) ; } BTIF_TRACE_DEBUG ( \"close<S2SV_blank>fd:%d<S2SV_blank>after<S2SV_blank>sent\" , send_fd ) ; close ( send_fd ) ; return ret_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ret = TEMP_FAILURE_RETRY ( <S2SV_ModStart> msg , MSG_NOSIGNAL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfssvc_decode_readlinkargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd_readlinkargs * args ) { p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; <S2SV_StartBug> args -> buffer = page_address ( * ( rqstp -> rq_next_page ++ ) ) ; <S2SV_EndBug> <S2SV_StartBug> return xdr_argsize_check ( rqstp , p ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; if ( ! xdr_argsize_check ( rqstp , p ) ) return 0 ; <S2SV_ModStart> ) ; return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0185\n\n```\nCWE-264 int fpm_unix_resolve_socket_premissions ( struct fpm_worker_pool_s * wp ) { struct fpm_worker_pool_config_s * c = wp -> config ; wp -> socket_uid = - 1 ; wp -> socket_gid = - 1 ; <S2SV_StartBug> wp -> socket_mode = 0666 ; <S2SV_EndBug> if ( ! c ) { return 0 ; } if ( c -> listen_owner && * c -> listen_owner ) { struct passwd * pwd ; pwd = getpwnam ( c -> listen_owner ) ; if ( ! pwd ) { zlog ( ZLOG_SYSERROR , \"[pool<S2SV_blank>%s]<S2SV_blank>cannot<S2SV_blank>get<S2SV_blank>uid<S2SV_blank>for<S2SV_blank>user<S2SV_blank>\\'%s\\'\" , wp -> config -> name , c -> listen_owner ) ; return - 1 ; } wp -> socket_uid = pwd -> pw_uid ; wp -> socket_gid = pwd -> pw_gid ; } if ( c -> listen_group && * c -> listen_group ) { struct group * grp ; grp = getgrnam ( c -> listen_group ) ; if ( ! grp ) { zlog ( ZLOG_SYSERROR , \"[pool<S2SV_blank>%s]<S2SV_blank>cannot<S2SV_blank>get<S2SV_blank>gid<S2SV_blank>for<S2SV_blank>group<S2SV_blank>\\'%s\\'\" , wp -> config -> name , c -> listen_group ) ; return - 1 ; } wp -> socket_gid = grp -> gr_gid ; } if ( c -> listen_mode && * c -> listen_mode ) { wp -> socket_mode = strtoul ( c -> listen_mode , 0 , 8 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> socket_mode = 0660 <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11595\n\n```\nCWE-119 void jslTokenAsString ( int token , char * str , size_t len ) { if ( token > 32 && token < 128 ) { assert ( len >= 4 ) ; str [ 0 ] = '\\\\'' ; str [ 1 ] = ( char ) token ; str [ 2 ] = '\\\\'' ; str [ 3 ] = 0 ; return ; } switch ( token ) { case LEX_EOF : strncpy ( str , \"EOF\" , len ) ; return ; case LEX_ID : strncpy ( str , \"ID\" , len ) ; return ; case LEX_INT : strncpy ( str , \"INT\" , len ) ; return ; case LEX_FLOAT : strncpy ( str , \"FLOAT\" , len ) ; return ; case LEX_STR : strncpy ( str , \"STRING\" , len ) ; return ; case LEX_UNFINISHED_STR : strncpy ( str , \"UNFINISHED<S2SV_blank>STRING\" , len ) ; return ; case LEX_TEMPLATE_LITERAL : strncpy ( str , \"TEMPLATE<S2SV_blank>LITERAL\" , len ) ; return ; case LEX_UNFINISHED_TEMPLATE_LITERAL : strncpy ( str , \"UNFINISHED<S2SV_blank>TEMPLATE<S2SV_blank>LITERAL\" , len ) ; return ; case LEX_REGEX : strncpy ( str , \"REGEX\" , len ) ; return ; case LEX_UNFINISHED_REGEX : strncpy ( str , \"UNFINISHED<S2SV_blank>REGEX\" , len ) ; return ; case LEX_UNFINISHED_COMMENT : strncpy ( str , \"UNFINISHED<S2SV_blank>COMMENT\" , len ) ; return ; } if ( token >= _LEX_OPERATOR_START && token < _LEX_R_LIST_END ) { const char tokenNames [ ] = \"==\\\\0\" \"===\\\\0\" \"!=\\\\0\" \"!==\\\\0\" \"<=\\\\0\" \"<<\\\\0\" \"<<=\\\\0\" \">=\\\\0\" \">>\\\\0\" \">>>\\\\0\" \">>=\\\\0\" \">>>=\\\\0\" \"+=\\\\0\" \"-=\\\\0\" \"++\\\\0\" \"--\\\\0\" \"*=\\\\0\" \"/=\\\\0\" \"%=\\\\0\" \"&=\\\\0\" \"&&\\\\0\" \"|=\\\\0\" \"||\\\\0\" \"^=\\\\0\" \"=>\\\\0\" \"if\\\\0\" \"else\\\\0\" \"do\\\\0\" \"while\\\\0\" \"for\\\\0\" \"return\\\\0\" \"continue\\\\0\" \"function\\\\0\" \"return\\\\0\" \"var\\\\0\" \"let\\\\0\" \"const\\\\0\" \"this\\\\0\" \"throw\\\\0\" \"try\\\\0\" \"catch\\\\0\" \"finally\\\\0\" \"true\\\\0\" \"false\\\\0\" \"null\\\\0\" \"undefined\\\\0\" \"new\\\\0\" \"in\\\\0\" \"instanceof\\\\0\" \"switch\\\\0\" \"case\\\\0\" \"default\\\\0\" \"delete\\\\0\" \"typeof\\\\0\" \"void\\\\0\" \"debugger\\\\0\" \"class\\\\0\" \"extends\\\\0\" \"super\\\\0\" \"static\\\\0\" ; unsigned int p = 0 ; int n = token - _LEX_OPERATOR_START ; while ( n > 0 && p < sizeof ( tokenNames ) ) { while ( tokenNames [ p ] && p < sizeof ( tokenNames ) ) p ++ ; p ++ ; n -- ; } assert ( n == 0 ) ; strncpy ( str , & tokenNames [ p ] , len ) ; return ; } assert ( len >= 10 ) ; <S2SV_StartBug> strncpy ( str , \"?[\" , len ) ; <S2SV_EndBug> itostr ( token , & str [ 2 ] , 10 ) ; strncat ( str , \"]\" , len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 10 ) ; espruino_snprintf ( str , len , \"?[%d]\" , token <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4587\n\n```\nCWE-20 static int kvm_vm_ioctl_create_vcpu ( struct kvm * kvm , u32 id ) { int r ; struct kvm_vcpu * vcpu , * v ; <S2SV_StartBug> vcpu = kvm_arch_vcpu_create ( kvm , id ) ; <S2SV_EndBug> if ( IS_ERR ( vcpu ) ) return PTR_ERR ( vcpu ) ; preempt_notifier_init ( & vcpu -> preempt_notifier , & kvm_preempt_ops ) ; r = kvm_arch_vcpu_setup ( vcpu ) ; if ( r ) goto vcpu_destroy ; mutex_lock ( & kvm -> lock ) ; if ( ! kvm_vcpu_compatible ( vcpu ) ) { r = - EINVAL ; goto unlock_vcpu_destroy ; } if ( atomic_read ( & kvm -> online_vcpus ) == KVM_MAX_VCPUS ) { r = - EINVAL ; goto unlock_vcpu_destroy ; } kvm_for_each_vcpu ( r , v , kvm ) if ( v -> vcpu_id == id ) { r = - EEXIST ; goto unlock_vcpu_destroy ; } BUG_ON ( kvm -> vcpus [ atomic_read ( & kvm -> online_vcpus ) ] ) ; kvm_get_kvm ( kvm ) ; r = create_vcpu_fd ( vcpu ) ; if ( r < 0 ) { kvm_put_kvm ( kvm ) ; goto unlock_vcpu_destroy ; } kvm -> vcpus [ atomic_read ( & kvm -> online_vcpus ) ] = vcpu ; smp_wmb ( ) ; atomic_inc ( & kvm -> online_vcpus ) ; mutex_unlock ( & kvm -> lock ) ; kvm_arch_vcpu_postcreate ( vcpu ) ; return r ; unlock_vcpu_destroy : mutex_unlock ( & kvm -> lock ) ; vcpu_destroy : kvm_arch_vcpu_destroy ( vcpu ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * v ; if ( id >= KVM_MAX_VCPUS ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 void * sspi_SecureHandleGetLowerPointer ( SecHandle * handle ) { void * pointer ; <S2SV_StartBug> if ( ! handle ) <S2SV_EndBug> return NULL ; pointer = ( void * ) ~ ( ( size_t ) handle -> dwLower ) ; return pointer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! handle || ! SecIsValidHandle ( handle )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5232\n\n```\nCWE-362 hsm_com_errno_t hcom_client_init ( OUT p_hsm_com_client_hdl_t * p_hdl , IN char * server_path , IN char * client_path , IN int max_data_len ) { hsm_com_client_hdl_t * hdl = NULL ; hsm_com_errno_t res = HSM_COM_OK ; if ( ( strlen ( server_path ) > ( HSM_COM_SVR_MAX_PATH - 1 ) ) || ( strlen ( server_path ) == 0 ) ) { res = HSM_COM_PATH_ERR ; goto cleanup ; } if ( ( strlen ( client_path ) > ( HSM_COM_SVR_MAX_PATH - 1 ) ) || ( strlen ( client_path ) == 0 ) ) { res = HSM_COM_PATH_ERR ; goto cleanup ; } if ( ( hdl = calloc ( 1 , sizeof ( hsm_com_client_hdl_t ) ) ) == NULL ) { res = HSM_COM_NO_MEM ; goto cleanup ; } if ( ( hdl -> scr . scratch = malloc ( max_data_len ) ) == NULL ) { res = HSM_COM_NO_MEM ; goto cleanup ; } if ( ( hdl -> recv_buf = malloc ( max_data_len ) ) == NULL ) { res = HSM_COM_NO_MEM ; goto cleanup ; } if ( ( hdl -> send_buf = malloc ( max_data_len ) ) == NULL ) { res = HSM_COM_NO_MEM ; goto cleanup ; } hdl -> scr . scratch_fill = 0 ; hdl -> scr . scratch_len = max_data_len ; hdl -> buf_len = max_data_len ; hdl -> trans_id = 1 ; strcpy ( hdl -> s_path , server_path ) ; strcpy ( hdl -> c_path , client_path ) ; <S2SV_StartBug> hdl -> client_state = HSM_COM_C_STATE_IN ; <S2SV_EndBug> * p_hdl = hdl ; return res ; cleanup : if ( hdl ) { if ( hdl -> scr . scratch ) { free ( hdl -> scr . scratch ) ; } if ( hdl -> recv_buf ) { free ( hdl -> recv_buf ) ; } free ( hdl ) ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> client_path ) ; if ( mkstemp ( hdl -> c_path ) == - 1 ) { res = HSM_COM_PATH_ERR ; goto cleanup ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3224\n\n```\nCWE-200 int bt_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct sk_buff * skb ; size_t copied ; int err ; BT_DBG ( \"sock<S2SV_blank>%p<S2SV_blank>sk<S2SV_blank>%p<S2SV_blank>len<S2SV_blank>%zu\" , sock , sk , len ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; <S2SV_StartBug> skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; <S2SV_EndBug> if ( ! skb ) { if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( skb ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err == 0 ) sock_recv_ts_and_drops ( msg , sk , skb ) ; skb_free_datagram ( sk , skb ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EOPNOTSUPP ; msg -> msg_namelen = 0 ; <S2SV_ModStart> err ; } <S2SV_ModEnd> copied = skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5358\n\n```\nCWE-20 static void dissect_rpcap_packet ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * top_tree , proto_tree * parent_tree , gint offset , proto_item * top_item ) { proto_tree * tree ; proto_item * ti ; nstime_t ts ; tvbuff_t * new_tvb ; guint caplen , len , frame_no ; <S2SV_StartBug> gint reported_length_remaining ; <S2SV_EndBug> ti = proto_tree_add_item ( parent_tree , hf_packet , tvb , offset , 20 , ENC_NA ) ; tree = proto_item_add_subtree ( ti , ett_packet ) ; ts . secs = tvb_get_ntohl ( tvb , offset ) ; ts . nsecs = tvb_get_ntohl ( tvb , offset + 4 ) * 1000 ; proto_tree_add_time ( tree , hf_timestamp , tvb , offset , 8 , & ts ) ; offset += 8 ; caplen = tvb_get_ntohl ( tvb , offset ) ; ti = proto_tree_add_item ( tree , hf_caplen , tvb , offset , 4 , ENC_BIG_ENDIAN ) ; offset += 4 ; len = tvb_get_ntohl ( tvb , offset ) ; proto_tree_add_item ( tree , hf_len , tvb , offset , 4 , ENC_BIG_ENDIAN ) ; offset += 4 ; frame_no = tvb_get_ntohl ( tvb , offset ) ; proto_tree_add_item ( tree , hf_npkt , tvb , offset , 4 , ENC_BIG_ENDIAN ) ; offset += 4 ; proto_item_append_text ( ti , \",<S2SV_blank>Frame<S2SV_blank>%u\" , frame_no ) ; proto_item_append_text ( top_item , \"<S2SV_blank>Frame<S2SV_blank>%u\" , frame_no ) ; reported_length_remaining = tvb_reported_length_remaining ( tvb , offset ) ; if ( caplen > ( guint ) reported_length_remaining ) { expert_add_info ( pinfo , ti , & ei_caplen_too_big ) ; return ; } new_tvb = tvb_new_subset ( tvb , offset , caplen , len ) ; if ( decode_content && linktype != WTAP_ENCAP_UNKNOWN ) { <S2SV_StartBug> dissector_try_uint ( wtap_encap_dissector_table , linktype , new_tvb , pinfo , top_tree ) ; <S2SV_EndBug> if ( ! info_added ) { col_prepend_fence_fstr ( pinfo -> cinfo , COL_PROTOCOL , \"R|\" ) ; col_prepend_fence_fstr ( pinfo -> cinfo , COL_INFO , \"Remote<S2SV_blank>|<S2SV_blank>\" ) ; info_added = TRUE ; register_frame_end_routine ( pinfo , rpcap_frame_end ) ; } } else { if ( linktype == WTAP_ENCAP_UNKNOWN ) { proto_item_append_text ( ti , \",<S2SV_blank>Unknown<S2SV_blank>link-layer<S2SV_blank>type\" ) ; } call_dissector ( data_handle , new_tvb , pinfo , top_tree ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gint reported_length_remaining ; struct eth_phdr eth ; void * phdr <S2SV_ModStart> WTAP_ENCAP_UNKNOWN ) { switch ( linktype ) { case WTAP_ENCAP_ETHERNET : eth . fcs_len = - 1 ; phdr = & eth ; break ; default : phdr = NULL ; break ; } dissector_try_uint_new <S2SV_ModEnd> ( wtap_encap_dissector_table , <S2SV_ModStart> pinfo , top_tree , TRUE , phdr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5244\n\n```\nCWE-200 void rds_inc_info_copy ( struct rds_incoming * inc , struct rds_info_iterator * iter , __be32 saddr , __be32 daddr , int flip ) { struct rds_info_message minfo ; minfo . seq = be64_to_cpu ( inc -> i_hdr . h_sequence ) ; minfo . len = be32_to_cpu ( inc -> i_hdr . h_len ) ; if ( flip ) { minfo . laddr = daddr ; minfo . faddr = saddr ; minfo . lport = inc -> i_hdr . h_dport ; minfo . fport = inc -> i_hdr . h_sport ; } else { minfo . laddr = saddr ; minfo . faddr = daddr ; minfo . lport = inc -> i_hdr . h_sport ; minfo . fport = inc -> i_hdr . h_dport ; } <S2SV_StartBug> rds_info_copy ( iter , & minfo , sizeof ( minfo ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> h_dport ; } minfo . flags = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_xform_quant ( MACROBLOCK * x , int plane , int block , BLOCK_SIZE plane_bsize , TX_SIZE tx_size ) { MACROBLOCKD * const xd = & x -> e_mbd ; const struct macroblock_plane * const p = & x -> plane [ plane ] ; const struct macroblockd_plane * const pd = & xd -> plane [ plane ] ; const scan_order * const scan_order = & vp9_default_scan_orders [ tx_size ] ; <S2SV_StartBug> int16_t * const coeff = BLOCK_OFFSET ( p -> coeff , block ) ; <S2SV_EndBug> <S2SV_StartBug> int16_t * const qcoeff = BLOCK_OFFSET ( p -> qcoeff , block ) ; <S2SV_EndBug> <S2SV_StartBug> int16_t * const dqcoeff = BLOCK_OFFSET ( pd -> dqcoeff , block ) ; <S2SV_EndBug> uint16_t * const eob = & p -> eobs [ block ] ; const int diff_stride = 4 * num_4x4_blocks_wide_lookup [ plane_bsize ] ; int i , j ; const int16_t * src_diff ; txfrm_block_to_raster_xy ( plane_bsize , tx_size , block , & i , & j ) ; src_diff = & p -> src_diff [ 4 * ( j * diff_stride + i ) ] ; <S2SV_StartBug> switch ( tx_size ) { <S2SV_EndBug> case TX_32X32 : <S2SV_StartBug> fdct32x32 ( x -> use_lp32x32fdct , src_diff , coeff , diff_stride ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_quantize_b_32x32 ( coeff , 1024 , x -> skip_block , p -> zbin , p -> round , <S2SV_EndBug> <S2SV_StartBug> p -> quant , p -> quant_shift , qcoeff , dqcoeff , <S2SV_EndBug> <S2SV_StartBug> pd -> dequant , p -> zbin_extra , eob , scan_order -> scan , <S2SV_EndBug> scan_order -> iscan ) ; break ; case TX_16X16 : <S2SV_StartBug> vp9_fdct16x16 ( src_diff , coeff , diff_stride ) ; <S2SV_EndBug> vp9_quantize_b ( coeff , 256 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , <S2SV_StartBug> pd -> dequant , p -> zbin_extra , eob , <S2SV_EndBug> scan_order -> scan , scan_order -> iscan ) ; break ; case TX_8X8 : <S2SV_StartBug> vp9_fdct8x8 ( src_diff , coeff , diff_stride ) ; <S2SV_EndBug> vp9_quantize_b ( coeff , 64 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , <S2SV_StartBug> pd -> dequant , p -> zbin_extra , eob , <S2SV_EndBug> scan_order -> scan , scan_order -> iscan ) ; break ; case TX_4X4 : x -> fwd_txm4x4 ( src_diff , coeff , diff_stride ) ; <S2SV_StartBug> vp9_quantize_b ( coeff , 16 , x -> skip_block , p -> zbin , p -> round , <S2SV_EndBug> p -> quant , p -> quant_shift , qcoeff , dqcoeff , <S2SV_StartBug> pd -> dequant , p -> zbin_extra , eob , <S2SV_EndBug> scan_order -> scan , scan_order -> iscan ) ; break ; default : <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tx_size ] ; tran_low_t <S2SV_ModEnd> * const coeff <S2SV_ModStart> block ) ; tran_low_t <S2SV_ModEnd> * const qcoeff <S2SV_ModStart> block ) ; tran_low_t <S2SV_ModEnd> * const dqcoeff <S2SV_ModStart> ) ] ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { <S2SV_ModStart> case TX_32X32 : highbd_fdct32x32 <S2SV_ModEnd> ( x -> <S2SV_ModStart> diff_stride ) ; vpx_highbd_quantize_b_32x32 <S2SV_ModEnd> ( coeff , <S2SV_ModStart> , qcoeff , dqcoeff , <S2SV_ModEnd> pd -> dequant <S2SV_ModStart> -> dequant , eob , <S2SV_ModEnd> scan_order -> scan <S2SV_ModStart> case TX_16X16 : vpx_highbd_fdct16x16 ( src_diff , coeff , diff_stride ) ; vpx_highbd_quantize_b <S2SV_ModEnd> ( coeff , <S2SV_ModStart> pd -> dequant <S2SV_ModEnd> , eob , <S2SV_ModStart> case TX_8X8 : vpx_highbd_fdct8x8 ( src_diff , coeff , diff_stride ) ; vpx_highbd_quantize_b <S2SV_ModEnd> ( coeff , <S2SV_ModStart> pd -> dequant <S2SV_ModEnd> , eob , <S2SV_ModStart> diff_stride ) ; vpx_highbd_quantize_b <S2SV_ModEnd> ( coeff , <S2SV_ModStart> -> dequant , <S2SV_ModEnd> eob , scan_order <S2SV_ModStart> ( 0 ) ; } return ; } # endif switch ( tx_size ) { case TX_32X32 : fdct32x32 ( x -> use_lp32x32fdct , src_diff , coeff , diff_stride ) ; vpx_quantize_b_32x32 ( coeff , 1024 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; break ; case TX_16X16 : vpx_fdct16x16 ( src_diff , coeff , diff_stride ) ; vpx_quantize_b ( coeff , 256 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; break ; case TX_8X8 : vpx_fdct8x8 ( src_diff , coeff , diff_stride ) ; vpx_quantize_b ( coeff , 64 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; break ; case TX_4X4 : x -> fwd_txm4x4 ( src_diff , coeff , diff_stride ) ; vpx_quantize_b ( coeff , 16 , x -> skip_block , p -> zbin , p -> round , p -> quant , p -> quant_shift , qcoeff , dqcoeff , pd -> dequant , eob , scan_order -> scan , scan_order -> iscan ) ; break ; default : assert ( 0 ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13233\n\n```\nCWE-362 int insn_get_code_seg_params ( struct pt_regs * regs ) { <S2SV_StartBug> struct desc_struct * desc ; <S2SV_EndBug> short sel ; if ( v8086_mode ( regs ) ) return INSN_CODE_SEG_PARAMS ( 2 , 2 ) ; sel = get_segment_selector ( regs , INAT_SEG_REG_CS ) ; if ( sel < 0 ) return sel ; <S2SV_StartBug> desc = get_desc ( sel ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! desc ) <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> if ( ! ( desc -> type & BIT ( 3 ) ) ) <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> switch ( ( desc -> l << 1 ) | desc -> d ) { <S2SV_EndBug> case 0 : return INSN_CODE_SEG_PARAMS ( 2 , 2 ) ; case 1 : return INSN_CODE_SEG_PARAMS ( 4 , 4 ) ; case 2 : return INSN_CODE_SEG_PARAMS ( 4 , 8 ) ; case 3 : default : return - EINVAL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct desc_struct <S2SV_ModEnd> desc ; short <S2SV_ModStart> return sel ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! get_desc ( & desc , sel ) <S2SV_ModEnd> ) return - <S2SV_ModStart> ! ( desc . <S2SV_ModEnd> type & BIT <S2SV_ModStart> ( ( desc . <S2SV_ModEnd> l << 1 <S2SV_ModStart> ) | desc . <S2SV_ModEnd> d ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0077\n\n```\nCWE-787 static void handle_rx ( struct vhost_net * net ) { struct vhost_net_virtqueue * nvq = & net -> vqs [ VHOST_NET_VQ_RX ] ; struct vhost_virtqueue * vq = & nvq -> vq ; unsigned uninitialized_var ( in ) , log ; struct vhost_log * vq_log ; struct msghdr msg = { . msg_name = NULL , . msg_namelen = 0 , . msg_control = NULL , . msg_controllen = 0 , . msg_iov = vq -> iov , . msg_flags = MSG_DONTWAIT , } ; struct virtio_net_hdr_mrg_rxbuf hdr = { . hdr . flags = 0 , . hdr . gso_type = VIRTIO_NET_HDR_GSO_NONE } ; size_t total_len = 0 ; int err , mergeable ; s16 headcount ; size_t vhost_hlen , sock_hlen ; size_t vhost_len , sock_len ; struct socket * sock ; mutex_lock ( & vq -> mutex ) ; sock = vq -> private_data ; if ( ! sock ) goto out ; vhost_disable_notify ( & net -> dev , vq ) ; vhost_hlen = nvq -> vhost_hlen ; sock_hlen = nvq -> sock_hlen ; vq_log = unlikely ( vhost_has_feature ( & net -> dev , VHOST_F_LOG_ALL ) ) ? vq -> log : NULL ; mergeable = vhost_has_feature ( & net -> dev , VIRTIO_NET_F_MRG_RXBUF ) ; while ( ( sock_len = peek_head_len ( sock -> sk ) ) ) { sock_len += sock_hlen ; vhost_len = sock_len + vhost_hlen ; headcount = get_rx_bufs ( vq , vq -> heads , vhost_len , & in , vq_log , & log , likely ( mergeable ) ? UIO_MAXIOV : 1 ) ; if ( unlikely ( headcount < 0 ) ) break ; <S2SV_StartBug> if ( ! headcount ) { <S2SV_EndBug> if ( unlikely ( vhost_enable_notify ( & net -> dev , vq ) ) ) { vhost_disable_notify ( & net -> dev , vq ) ; continue ; } break ; } if ( unlikely ( ( vhost_hlen ) ) ) move_iovec_hdr ( vq -> iov , nvq -> hdr , vhost_hlen , in ) ; else copy_iovec_hdr ( vq -> iov , nvq -> hdr , sock_hlen , in ) ; <S2SV_StartBug> msg . msg_iovlen = in ; <S2SV_EndBug> err = sock -> ops -> recvmsg ( NULL , sock , & msg , <S2SV_StartBug> sock_len , MSG_DONTWAIT | MSG_TRUNC ) ; <S2SV_EndBug> <S2SV_StartBug> if ( unlikely ( err != sock_len ) ) { <S2SV_EndBug> pr_debug ( \"Discarded<S2SV_blank>rx<S2SV_blank>packet:<S2SV_blank>\" \"<S2SV_blank>len<S2SV_blank>%d,<S2SV_blank>expected<S2SV_blank>%zd\\\\n\" , err , sock_len ) ; vhost_discard_vq_desc ( vq , headcount ) ; continue ; } if ( unlikely ( vhost_hlen ) && memcpy_toiovecend ( nvq -> hdr , ( unsigned char * ) & hdr , 0 , vhost_hlen ) ) { vq_err ( vq , \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>vnet_hdr<S2SV_blank>at<S2SV_blank>addr<S2SV_blank>%p\\\\n\" , vq -> iov -> iov_base ) ; break ; } if ( likely ( mergeable ) && memcpy_toiovecend ( nvq -> hdr , ( unsigned char * ) & headcount , offsetof ( typeof ( hdr ) , num_buffers ) , sizeof hdr . num_buffers ) ) { vq_err ( vq , \"Failed<S2SV_blank>num_buffers<S2SV_blank>write\" ) ; vhost_discard_vq_desc ( vq , headcount ) ; break ; } vhost_add_used_and_signal_n ( & net -> dev , vq , vq -> heads , headcount ) ; if ( unlikely ( vq_log ) ) vhost_log_write ( vq , vq_log , log , vhost_len ) ; total_len += vhost_len ; if ( unlikely ( total_len >= VHOST_NET_WEIGHT ) ) { vhost_poll_queue ( & vq -> poll ) ; break ; } } out : mutex_unlock ( & vq -> mutex ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( unlikely ( headcount > UIO_MAXIOV ) ) { <S2SV_ModEnd> msg . msg_iovlen <S2SV_ModStart> . msg_iovlen = 1 <S2SV_ModEnd> ; err = <S2SV_ModStart> & msg , 1 <S2SV_ModEnd> , MSG_DONTWAIT | <S2SV_ModStart> MSG_TRUNC ) ; pr_debug ( \"Discarded<S2SV_blank>rx<S2SV_blank>packet:<S2SV_blank>len<S2SV_blank>%zd\\\\n\" , sock_len ) ; continue ; } if ( ! headcount ) { if ( unlikely ( vhost_enable_notify ( & net -> dev , vq ) ) ) { vhost_disable_notify ( & net -> dev , vq ) ; continue ; } break ; } if ( unlikely ( ( vhost_hlen ) ) ) move_iovec_hdr ( vq -> iov , nvq -> hdr , vhost_hlen , in ) ; else copy_iovec_hdr ( vq -> iov , nvq -> hdr , sock_hlen , in ) ; msg . msg_iovlen = in ; err = sock -> ops -> recvmsg ( NULL , sock , & msg , sock_len , MSG_DONTWAIT | MSG_TRUNC ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20459\n\n```\nCWE-125 static bool parseOperands ( char * str , ArmOp * op ) { char * t = strdup ( str ) ; int operand = 0 ; char * token = t ; char * x ; int imm_count = 0 ; int mem_opt = 0 ; if ( ! token ) { return false ; } while ( token ) { char * next = strchr ( token , ',' ) ; if ( next ) { * next ++ = 0 ; } while ( token [ 0 ] == '<S2SV_blank>' ) { token ++ ; } if ( operand >= MAX_OPERANDS ) { eprintf ( \"Too<S2SV_blank>many<S2SV_blank>operands\\\\n\" ) ; return false ; } op -> operands [ operand ] . type = ARM_NOTYPE ; op -> operands [ operand ] . reg_type = ARM_UNDEFINED ; op -> operands [ operand ] . shift = ARM_NO_SHIFT ; while ( token [ 0 ] == '<S2SV_blank>' || token [ 0 ] == '[' || token [ 0 ] == ']' ) { token ++ ; } if ( ! strncmp ( token , \"lsl\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_LSL ; } else if ( ! strncmp ( token , \"lsr\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_LSR ; } else if ( ! strncmp ( token , \"asr\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_ASR ; } <S2SV_StartBug> if ( op -> operands [ operand ] . shift != ARM_NO_SHIFT ) { <S2SV_EndBug> op -> operands_count ++ ; op -> operands [ operand ] . shift_amount = r_num_math ( NULL , token + 4 ) ; if ( op -> operands [ operand ] . shift_amount > 63 ) { return false ; } operand ++ ; token = next ; continue ; } switch ( token [ 0 ] ) { case 'x' : x = strchr ( token , ',' ) ; if ( x ) { x [ 0 ] = '\\\\0' ; } op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_REG64 ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; if ( op -> operands [ operand ] . reg > 31 ) { return false ; } break ; case 'w' : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_REG32 ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; if ( op -> operands [ operand ] . reg > 31 ) { return false ; } break ; case 'v' : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_FP ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; break ; case 's' : case 'S' : if ( token [ 1 ] == 'P' || token [ 1 ] == 'p' ) { int i ; for ( i = 0 ; msr_const [ i ] . name ; i ++ ) { if ( ! r_str_ncasecmp ( token , msr_const [ i ] . name , strlen ( msr_const [ i ] . name ) ) ) { op -> operands [ operand ] . sp_val = msr_const [ i ] . val ; break ; } } op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_SP | ARM_REG64 ; op -> operands [ operand ] . reg = 31 ; break ; } mem_opt = get_mem_option ( token ) ; if ( mem_opt != - 1 ) { op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_MEM_OPT ; op -> operands [ operand ] . mem_option = mem_opt ; } break ; case 'L' : case 'l' : case 'I' : case 'i' : case 'N' : case 'n' : case 'O' : case 'o' : case 'p' : case 'P' : mem_opt = get_mem_option ( token ) ; if ( mem_opt != - 1 ) { op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_MEM_OPT ; op -> operands [ operand ] . mem_option = mem_opt ; } break ; case '-' : op -> operands [ operand ] . sign = - 1 ; default : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_CONSTANT ; op -> operands [ operand ] . immediate = r_num_math ( NULL , token ) ; imm_count ++ ; break ; } token = next ; operand ++ ; if ( operand > MAX_OPERANDS ) { free ( t ) ; return false ; } } free ( t ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( strlen ( token ) > 4 &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19221\n\n```\nCWE-125 int archive_wstring_append_from_mbs ( struct archive_wstring * dest , const char * p , size_t len ) { size_t r ; int ret_val = 0 ; <S2SV_StartBug> size_t wcs_length = len ; <S2SV_EndBug> size_t mbs_length = len ; const char * mbs = p ; wchar_t * wcs ; # if HAVE_MBRTOWC mbstate_t shift_state ; memset ( & shift_state , 0 , sizeof ( shift_state ) ) ; # endif <S2SV_StartBug> if ( NULL == archive_wstring_ensure ( dest , dest -> length + wcs_length + 1 ) ) <S2SV_EndBug> return ( - 1 ) ; wcs = dest -> s + dest -> length ; while ( * mbs && mbs_length > 0 ) { <S2SV_StartBug> if ( wcs_length == 0 ) { <S2SV_EndBug> dest -> length = wcs - dest -> s ; dest -> s [ dest -> length ] = L'\\\\0' ; <S2SV_StartBug> wcs_length = mbs_length ; <S2SV_EndBug> if ( NULL == archive_wstring_ensure ( dest , dest -> length + wcs_length + 1 ) ) return ( - 1 ) ; wcs = dest -> s + dest -> length ; } # if HAVE_MBRTOWC r = mbrtowc ( wcs , mbs , wcs_length , & shift_state ) ; # else r = mbtowc ( wcs , mbs , wcs_length ) ; # endif if ( r == ( size_t ) - 1 || r == ( size_t ) - 2 ) { ret_val = - 1 ; if ( errno == EILSEQ ) { ++ mbs ; -- mbs_length ; continue ; } else break ; } if ( r == 0 || r > mbs_length ) break ; wcs ++ ; wcs_length -- ; mbs += r ; mbs_length -= r ; } dest -> length = wcs - dest -> s ; dest -> s [ dest -> length ] = L'\\\\0' ; return ( ret_val ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; size_t <S2SV_ModEnd> mbs_length = len <S2SV_ModStart> -> length + len <S2SV_ModEnd> + 1 ) <S2SV_ModStart> 0 ) { # if HAVE_MBRTOWC r = mbrtowc ( wcs , mbs , mbs_length , & shift_state ) ; # else r = mbtowc ( wcs , mbs , mbs_length ) ; # endif if ( r == ( size_t ) - 1 || r == ( size_t ) - 2 ) { ret_val = - 1 ; break ; } if ( r == 0 || r > mbs_length ) break ; wcs ++ ; mbs += r ; mbs_length -= r ; } <S2SV_ModEnd> dest -> length <S2SV_ModStart> = L'\\\\0' ; <S2SV_ModEnd> return ( ret_val\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 static void common_hrtimer_rearm ( struct k_itimer * timr ) { struct hrtimer * timer = & timr -> it . real . timer ; if ( ! timr -> it_interval ) return ; <S2SV_StartBug> timr -> it_overrun += ( unsigned int ) hrtimer_forward ( timer , <S2SV_EndBug> timer -> base -> get_time ( ) , timr -> it_interval ) ; hrtimer_restart ( timer ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> it_overrun += <S2SV_ModEnd> hrtimer_forward ( timer\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9077\n\n```\nCWE-000 static struct sock * tcp_v6_syn_recv_sock ( const struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst , struct request_sock * req_unhash , bool * own_req ) { struct inet_request_sock * ireq ; struct ipv6_pinfo * newnp ; const struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct ipv6_txoptions * opt ; struct tcp6_sock * newtcp6sk ; struct inet_sock * newinet ; struct tcp_sock * newtp ; struct sock * newsk ; # ifdef CONFIG_TCP_MD5SIG struct tcp_md5sig_key * key ; # endif struct flowi6 fl6 ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = tcp_v4_syn_recv_sock ( sk , skb , req , dst , req_unhash , own_req ) ; if ( ! newsk ) return NULL ; newtcp6sk = ( struct tcp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newtcp6sk -> inet6 ; newinet = inet_sk ( newsk ) ; newnp = inet6_sk ( newsk ) ; newtp = tcp_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newnp -> saddr = newsk -> sk_v6_rcv_saddr ; inet_csk ( newsk ) -> icsk_af_ops = & ipv6_mapped ; newsk -> sk_backlog_rcv = tcp_v4_do_rcv ; # ifdef CONFIG_TCP_MD5SIG newtp -> af_specific = & tcp_sock_ipv6_mapped_specific ; # endif <S2SV_StartBug> newnp -> ipv6_ac_list = NULL ; <S2SV_EndBug> newnp -> ipv6_fl_list = NULL ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = tcp_v6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; newnp -> rcv_flowinfo = ip6_flowinfo ( ipv6_hdr ( skb ) ) ; if ( np -> repflow ) newnp -> flow_label = ip6_flowlabel ( ipv6_hdr ( skb ) ) ; tcp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } ireq = inet_rsk ( req ) ; if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( ! dst ) { dst = inet6_csk_route_req ( sk , & fl6 , req , IPPROTO_TCP ) ; if ( ! dst ) goto out ; } newsk = tcp_create_openreq_child ( sk , req , skb ) ; if ( ! newsk ) goto out_nonewsk ; newsk -> sk_gso_type = SKB_GSO_TCPV6 ; ip6_dst_store ( newsk , dst , NULL , NULL ) ; inet6_sk_rx_dst_set ( newsk , skb ) ; newtcp6sk = ( struct tcp6_sock * ) newsk ; inet_sk ( newsk ) -> pinet6 = & newtcp6sk -> inet6 ; newtp = tcp_sk ( newsk ) ; newinet = inet_sk ( newsk ) ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; newsk -> sk_v6_daddr = ireq -> ir_v6_rmt_addr ; newnp -> saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_v6_rcv_saddr = ireq -> ir_v6_loc_addr ; newsk -> sk_bound_dev_if = ireq -> ir_iif ; <S2SV_StartBug> newinet -> inet_opt = NULL ; <S2SV_EndBug> newnp -> ipv6_ac_list = NULL ; newnp -> ipv6_fl_list = NULL ; newnp -> rxopt . all = np -> rxopt . all ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = tcp_v6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; newnp -> rcv_flowinfo = ip6_flowinfo ( ipv6_hdr ( skb ) ) ; if ( np -> repflow ) newnp -> flow_label = ip6_flowlabel ( ipv6_hdr ( skb ) ) ; opt = ireq -> ipv6_opt ; if ( ! opt ) opt = rcu_dereference ( np -> opt ) ; if ( opt ) { opt = ipv6_dup_options ( newsk , opt ) ; RCU_INIT_POINTER ( newnp -> opt , opt ) ; } inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( opt ) inet_csk ( newsk ) -> icsk_ext_hdr_len = opt -> opt_nflen + opt -> opt_flen ; tcp_ca_openreq_child ( newsk , dst ) ; tcp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newtp -> advmss = tcp_mss_clamp ( tcp_sk ( sk ) , dst_metric_advmss ( dst ) ) ; tcp_initialize_rcv_mss ( newsk ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; # ifdef CONFIG_TCP_MD5SIG key = tcp_v6_md5_do_lookup ( sk , & newsk -> sk_v6_daddr ) ; if ( key ) { tcp_md5_do_add ( newsk , ( union tcp_md5_addr * ) & newsk -> sk_v6_daddr , AF_INET6 , key -> key , key -> keylen , sk_gfp_mask ( sk , GFP_ATOMIC ) ) ; } # endif if ( __inet_inherit_port ( sk , newsk ) < 0 ) { inet_csk_prepare_forced_close ( newsk ) ; tcp_done ( newsk ) ; goto out ; } * own_req = inet_ehash_nolisten ( newsk , req_to_sk ( req_unhash ) ) ; if ( * own_req ) { tcp_move_syn ( newtp , req ) ; if ( ireq -> pktopts ) { newnp -> pktoptions = skb_clone ( ireq -> pktopts , sk_gfp_mask ( sk , GFP_ATOMIC ) ) ; consume_skb ( ireq -> pktopts ) ; ireq -> pktopts = NULL ; if ( newnp -> pktoptions ) { tcp_v6_restore_cb ( newnp -> pktoptions ) ; skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } } } return newsk ; out_overflow : __NET_INC_STATS ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : tcp_listendrop ( sk ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> endif newnp -> ipv6_mc_list = NULL ; newnp -> <S2SV_ModStart> newinet -> inet_opt = NULL ; newnp -> ipv6_mc_list\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16530\n\n```\nCWE-125 static int uas_switch_interface ( struct usb_device * udev , struct usb_interface * intf ) { <S2SV_StartBug> int alt ; <S2SV_EndBug> alt = uas_find_uas_alt_setting ( intf ) ; <S2SV_StartBug> if ( alt < 0 ) <S2SV_EndBug> return alt ; return usb_set_interface ( udev , <S2SV_StartBug> intf -> altsetting [ 0 ] . desc . bInterfaceNumber , alt ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> intf ) { struct usb_host_interface * <S2SV_ModEnd> alt ; alt <S2SV_ModStart> ; if ( ! alt ) return - ENODEV <S2SV_ModEnd> ; return usb_set_interface <S2SV_ModStart> ( udev , alt -> <S2SV_ModEnd> desc . bInterfaceNumber <S2SV_ModStart> bInterfaceNumber , alt -> desc . bAlternateSetting\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 int main ( void ) { <S2SV_StartBug> # line 52 \"dt_test2.pgc\" <S2SV_EndBug> date date1 ; <S2SV_StartBug> # line 53 \"dt_test2.pgc\" <S2SV_EndBug> timestamp ts1 , ts2 ; <S2SV_StartBug> # line 54 \"dt_test2.pgc\" <S2SV_EndBug> char * text ; <S2SV_StartBug> # line 55 \"dt_test2.pgc\" <S2SV_EndBug> interval * i1 ; <S2SV_StartBug> # line 56 \"dt_test2.pgc\" <S2SV_EndBug> date * dc ; <S2SV_StartBug> # line 57 \"dt_test2.pgc\" <S2SV_EndBug> int i , j ; char * endptr ; ECPGdebug ( 1 , stderr ) ; ts1 = PGTYPEStimestamp_from_asc ( \"2003-12-04<S2SV_blank>17:34:29\" , NULL ) ; text = PGTYPEStimestamp_to_asc ( ts1 ) ; printf ( \"timestamp:<S2SV_blank>%s\\\\n\" , text ) ; free ( text ) ; date1 = PGTYPESdate_from_timestamp ( ts1 ) ; dc = PGTYPESdate_new ( ) ; * dc = date1 ; text = PGTYPESdate_to_asc ( * dc ) ; printf ( \"Date<S2SV_blank>of<S2SV_blank>timestamp:<S2SV_blank>%s\\\\n\" , text ) ; free ( text ) ; PGTYPESdate_free ( dc ) ; for ( i = 0 ; dates [ i ] ; i ++ ) { bool err = false ; date1 = PGTYPESdate_from_asc ( dates [ i ] , & endptr ) ; if ( date1 == INT_MIN ) { err = true ; } text = PGTYPESdate_to_asc ( date1 ) ; printf ( \"Date[%d]:<S2SV_blank>%s<S2SV_blank>(%c<S2SV_blank>-<S2SV_blank>%c)\\\\n\" , i , err ? \"-\" : text , endptr ? 'N' : 'Y' , err ? 'T' : 'F' ) ; free ( text ) ; if ( ! err ) { for ( j = 0 ; times [ j ] ; j ++ ) { int length = strlen ( dates [ i ] ) + 1 + strlen ( times [ j ] ) + 1 ; char * t = malloc ( length ) ; sprintf ( t , \"%s<S2SV_blank>%s\" , dates [ i ] , times [ j ] ) ; ts1 = PGTYPEStimestamp_from_asc ( t , NULL ) ; text = PGTYPEStimestamp_to_asc ( ts1 ) ; if ( i != 19 || j != 3 ) printf ( \"TS[%d,%d]:<S2SV_blank>%s\\\\n\" , i , j , errno ? \"-\" : text ) ; free ( text ) ; free ( t ) ; } } } ts1 = PGTYPEStimestamp_from_asc ( \"2004-04-04<S2SV_blank>23:23:23\" , NULL ) ; for ( i = 0 ; intervals [ i ] ; i ++ ) { interval * ic ; i1 = PGTYPESinterval_from_asc ( intervals [ i ] , & endptr ) ; if ( * endptr ) printf ( \"endptr<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%s\\\\n\" , endptr ) ; if ( ! i1 ) { printf ( \"Error<S2SV_blank>parsing<S2SV_blank>interval<S2SV_blank>%d\\\\n\" , i ) ; continue ; } j = PGTYPEStimestamp_add_interval ( & ts1 , i1 , & ts2 ) ; if ( j < 0 ) continue ; text = PGTYPESinterval_to_asc ( i1 ) ; printf ( \"interval[%d]:<S2SV_blank>%s\\\\n\" , i , text ? text : \"-\" ) ; free ( text ) ; ic = PGTYPESinterval_new ( ) ; PGTYPESinterval_copy ( i1 , ic ) ; text = PGTYPESinterval_to_asc ( i1 ) ; printf ( \"interval_copy[%d]:<S2SV_blank>%s\\\\n\" , i , text ? text : \"-\" ) ; free ( text ) ; PGTYPESinterval_free ( ic ) ; PGTYPESinterval_free ( i1 ) ; } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { # line 62 <S2SV_ModEnd> \"dt_test2.pgc\" date date1 <S2SV_ModStart> ; # line 63 <S2SV_ModEnd> \"dt_test2.pgc\" timestamp ts1 <S2SV_ModStart> ; # line 64 <S2SV_ModEnd> \"dt_test2.pgc\" char * <S2SV_ModStart> ; # line 65 <S2SV_ModEnd> \"dt_test2.pgc\" interval * <S2SV_ModStart> ; # line 66 <S2SV_ModEnd> \"dt_test2.pgc\" date * <S2SV_ModStart> ; # line 67 <S2SV_ModEnd> \"dt_test2.pgc\" int i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static reactor_status_t run_reactor ( reactor_t * reactor , int iterations ) { assert ( reactor != NULL ) ; reactor -> run_thread = pthread_self ( ) ; reactor -> is_running = true ; struct epoll_event events [ MAX_EVENTS ] ; for ( int i = 0 ; iterations == 0 || i < iterations ; ++ i ) { pthread_mutex_lock ( & reactor -> list_lock ) ; list_clear ( reactor -> invalidation_list ) ; pthread_mutex_unlock ( & reactor -> list_lock ) ; int ret ; do { <S2SV_StartBug> ret = epoll_wait ( reactor -> epoll_fd , events , MAX_EVENTS , - 1 ) ; <S2SV_EndBug> } while ( ret == - 1 && errno == EINTR ) ; if ( ret == - 1 ) { LOG_ERROR ( \"%s<S2SV_blank>error<S2SV_blank>in<S2SV_blank>epoll_wait:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; reactor -> is_running = false ; return REACTOR_STATUS_ERROR ; } for ( int j = 0 ; j < ret ; ++ j ) { if ( events [ j ] . data . ptr == NULL ) { eventfd_t value ; eventfd_read ( reactor -> event_fd , & value ) ; reactor -> is_running = false ; return REACTOR_STATUS_STOP ; } reactor_object_t * object = ( reactor_object_t * ) events [ j ] . data . ptr ; pthread_mutex_lock ( & reactor -> list_lock ) ; if ( list_contains ( reactor -> invalidation_list , object ) ) { pthread_mutex_unlock ( & reactor -> list_lock ) ; continue ; } pthread_mutex_lock ( & object -> lock ) ; pthread_mutex_unlock ( & reactor -> list_lock ) ; reactor -> object_removed = false ; if ( events [ j ] . events & ( EPOLLIN | EPOLLHUP | EPOLLRDHUP | EPOLLERR ) && object -> read_ready ) object -> read_ready ( object -> context ) ; if ( ! reactor -> object_removed && events [ j ] . events & EPOLLOUT && object -> write_ready ) object -> write_ready ( object -> context ) ; pthread_mutex_unlock ( & object -> lock ) ; if ( reactor -> object_removed ) { pthread_mutex_destroy ( & object -> lock ) ; osi_free ( object ) ; } } } reactor -> is_running = false ; return REACTOR_STATUS_DONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ret = TEMP_FAILURE_RETRY ( <S2SV_ModStart> , - 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17206\n\n```\nCWE-000 static enum ofperr decode_bundle ( bool load , const struct nx_action_bundle * nab , const struct vl_mff_map * vl_mff_map , uint64_t * tlv_bitmap , struct ofpbuf * ofpacts ) { static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT ( 1 , 5 ) ; struct ofpact_bundle * bundle ; uint32_t slave_type ; size_t slaves_size , i ; enum ofperr error ; bundle = ofpact_put_BUNDLE ( ofpacts ) ; bundle -> n_slaves = ntohs ( nab -> n_slaves ) ; bundle -> basis = ntohs ( nab -> basis ) ; bundle -> fields = ntohs ( nab -> fields ) ; bundle -> algorithm = ntohs ( nab -> algorithm ) ; slave_type = ntohl ( nab -> slave_type ) ; slaves_size = ntohs ( nab -> len ) - sizeof * nab ; error = OFPERR_OFPBAC_BAD_ARGUMENT ; if ( ! flow_hash_fields_valid ( bundle -> fields ) ) { VLOG_WARN_RL ( & rl , \"unsupported<S2SV_blank>fields<S2SV_blank>%d\" , ( int ) bundle -> fields ) ; } else if ( bundle -> n_slaves > BUNDLE_MAX_SLAVES ) { VLOG_WARN_RL ( & rl , \"too<S2SV_blank>many<S2SV_blank>slaves\" ) ; } else if ( bundle -> algorithm != NX_BD_ALG_HRW && bundle -> algorithm != NX_BD_ALG_ACTIVE_BACKUP ) { VLOG_WARN_RL ( & rl , \"unsupported<S2SV_blank>algorithm<S2SV_blank>%d\" , ( int ) bundle -> algorithm ) ; } else if ( slave_type != mf_nxm_header ( MFF_IN_PORT ) ) { VLOG_WARN_RL ( & rl , \"unsupported<S2SV_blank>slave<S2SV_blank>type<S2SV_blank>%\" PRIu16 , slave_type ) ; } else { error = 0 ; } if ( ! is_all_zeros ( nab -> zero , sizeof nab -> zero ) ) { VLOG_WARN_RL ( & rl , \"reserved<S2SV_blank>field<S2SV_blank>is<S2SV_blank>nonzero\" ) ; error = OFPERR_OFPBAC_BAD_ARGUMENT ; } if ( load ) { bundle -> dst . ofs = nxm_decode_ofs ( nab -> ofs_nbits ) ; bundle -> dst . n_bits = nxm_decode_n_bits ( nab -> ofs_nbits ) ; error = mf_vl_mff_mf_from_nxm_header ( ntohl ( nab -> dst ) , vl_mff_map , & bundle -> dst . field , tlv_bitmap ) ; if ( error ) { return error ; } if ( bundle -> dst . n_bits < 16 ) { VLOG_WARN_RL ( & rl , \"bundle_load<S2SV_blank>action<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>16<S2SV_blank>bit<S2SV_blank>\" \"destination.\" ) ; error = OFPERR_OFPBAC_BAD_ARGUMENT ; } } else { if ( nab -> ofs_nbits || nab -> dst ) { VLOG_WARN_RL ( & rl , \"bundle<S2SV_blank>action<S2SV_blank>has<S2SV_blank>nonzero<S2SV_blank>reserved<S2SV_blank>fields\" ) ; error = OFPERR_OFPBAC_BAD_ARGUMENT ; } } if ( slaves_size < bundle -> n_slaves * sizeof ( ovs_be16 ) ) { VLOG_WARN_RL ( & rl , \"Nicira<S2SV_blank>action<S2SV_blank>%s<S2SV_blank>only<S2SV_blank>has<S2SV_blank>%\" PRIuSIZE \"<S2SV_blank>bytes<S2SV_blank>\" \"allocated<S2SV_blank>for<S2SV_blank>slaves.<S2SV_blank><S2SV_blank>%\" PRIuSIZE \"<S2SV_blank>bytes<S2SV_blank>are<S2SV_blank>required<S2SV_blank>\" \"for<S2SV_blank>%\" PRIu16 \"<S2SV_blank>slaves.\" , load ? \"bundle_load\" : \"bundle\" , slaves_size , bundle -> n_slaves * sizeof ( ovs_be16 ) , bundle -> n_slaves ) ; error = OFPERR_OFPBAC_BAD_LEN ; <S2SV_StartBug> } <S2SV_EndBug> for ( i = 0 ; i < bundle -> n_slaves ; i ++ ) { ofp_port_t ofp_port = u16_to_ofp ( ntohs ( ( ( ovs_be16 * ) ( nab + 1 ) ) [ i ] ) ) ; ofpbuf_put ( ofpacts , & ofp_port , sizeof ofp_port ) ; bundle = ofpacts -> header ; } <S2SV_StartBug> ofpact_finish_BUNDLE ( ofpacts , & bundle ) ; <S2SV_EndBug> if ( ! error ) { error = bundle_check ( bundle , OFPP_MAX , NULL ) ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> OFPERR_OFPBAC_BAD_LEN ; } else { <S2SV_ModStart> header ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5194\n\n```\nCWE-20 int yyparse ( void ) # else int yyparse ( ) # endif # endif { int yystate ; int yyerrstatus ; yytype_int16 yyssa [ YYINITDEPTH ] ; yytype_int16 * yyss ; yytype_int16 * yyssp ; YYSTYPE yyvsa [ YYINITDEPTH ] ; YYSTYPE * yyvs ; YYSTYPE * yyvsp ; YYSIZE_T yystacksize ; int yyn ; int yyresult ; int yytoken ; YYSTYPE yyval ; # if YYERROR_VERBOSE char yymsgbuf [ 128 ] ; char * yymsg = yymsgbuf ; YYSIZE_T yymsg_alloc = sizeof yymsgbuf ; # endif # define YYPOPSTACK ( N ) ( yyvsp -= ( N ) , yyssp -= ( N ) ) int yylen = 0 ; yytoken = 0 ; yyss = yyssa ; yyvs = yyvsa ; yystacksize = YYINITDEPTH ; YYDPRINTF ( ( stderr , \"Starting<S2SV_blank>parse\\\\n\" ) ) ; yystate = 0 ; yyerrstatus = 0 ; yynerrs = 0 ; yychar = YYEMPTY ; yyssp = yyss ; yyvsp = yyvs ; goto yysetstate ; yynewstate : yyssp ++ ; yysetstate : * yyssp = yystate ; if ( yyss + yystacksize - 1 <= yyssp ) { YYSIZE_T yysize = yyssp - yyss + 1 ; # ifdef yyoverflow { YYSTYPE * yyvs1 = yyvs ; yytype_int16 * yyss1 = yyss ; yyoverflow ( YY_ ( \"memory<S2SV_blank>exhausted\" ) , & yyss1 , yysize * sizeof ( * yyssp ) , & yyvs1 , yysize * sizeof ( * yyvsp ) , & yystacksize ) ; yyss = yyss1 ; yyvs = yyvs1 ; } # else # ifndef YYSTACK_RELOCATE goto yyexhaustedlab ; # else if ( YYMAXDEPTH <= yystacksize ) goto yyexhaustedlab ; yystacksize *= 2 ; if ( YYMAXDEPTH < yystacksize ) yystacksize = YYMAXDEPTH ; { yytype_int16 * yyss1 = yyss ; union yyalloc * yyptr = ( union yyalloc * ) YYSTACK_ALLOC ( YYSTACK_BYTES ( yystacksize ) ) ; if ( ! yyptr ) goto yyexhaustedlab ; YYSTACK_RELOCATE ( yyss_alloc , yyss ) ; YYSTACK_RELOCATE ( yyvs_alloc , yyvs ) ; # undef YYSTACK_RELOCATE if ( yyss1 != yyssa ) YYSTACK_FREE ( yyss1 ) ; } # endif # endif yyssp = yyss + yysize - 1 ; yyvsp = yyvs + yysize - 1 ; YYDPRINTF ( ( stderr , \"Stack<S2SV_blank>size<S2SV_blank>increased<S2SV_blank>to<S2SV_blank>%lu\\\\n\" , ( unsigned long int ) yystacksize ) ) ; if ( yyss + yystacksize - 1 <= yyssp ) YYABORT ; } YYDPRINTF ( ( stderr , \"Entering<S2SV_blank>state<S2SV_blank>%d\\\\n\" , yystate ) ) ; if ( yystate == YYFINAL ) YYACCEPT ; goto yybackup ; yybackup : yyn = yypact [ yystate ] ; if ( yyn == YYPACT_NINF ) goto yydefault ; if ( yychar == YYEMPTY ) { YYDPRINTF ( ( stderr , \"Reading<S2SV_blank>a<S2SV_blank>token:<S2SV_blank>\" ) ) ; yychar = YYLEX ; } if ( yychar <= YYEOF ) { yychar = yytoken = YYEOF ; YYDPRINTF ( ( stderr , \"Now<S2SV_blank>at<S2SV_blank>end<S2SV_blank>of<S2SV_blank>input.\\\\n\" ) ) ; } else { yytoken = YYTRANSLATE ( yychar ) ; YY_SYMBOL_PRINT ( \"Next<S2SV_blank>token<S2SV_blank>is\" , yytoken , & yylval , & yylloc ) ; } yyn += yytoken ; if ( yyn < 0 || YYLAST < yyn || yycheck [ yyn ] != yytoken ) goto yydefault ; yyn = yytable [ yyn ] ; if ( yyn <= 0 ) { if ( yyn == 0 || yyn == YYTABLE_NINF ) goto yyerrlab ; yyn = - yyn ; goto yyreduce ; } if ( yyerrstatus ) yyerrstatus -- ; YY_SYMBOL_PRINT ( \"Shifting\" , yytoken , & yylval , & yylloc ) ; yychar = YYEMPTY ; yystate = yyn ; * ++ yyvsp = yylval ; goto yynewstate ; yydefault : yyn = yydefact [ yystate ] ; if ( yyn == 0 ) goto yyerrlab ; goto yyreduce ; yyreduce : yylen = yyr2 [ yyn ] ; yyval = yyvsp [ 1 - yylen ] ; YY_REDUCE_PRINT ( yyn ) ; switch ( yyn ) { case 5 : # line 320 \"ntp_parser.y\" { msyslog ( LOG_ERR , \"syntax<S2SV_blank>error<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>line<S2SV_blank>%d,<S2SV_blank>column<S2SV_blank>%d\" , ip_file -> fname , ip_file -> err_line_no , ip_file -> err_col_no ) ; } break ; case 19 : # line 354 \"ntp_parser.y\" { struct peer_node * my_node = create_peer_node ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 3 ) ] . Address_node ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Queue ) ) ; if ( my_node ) enqueue ( cfgt . peers , my_node ) ; } break ; case 20 : # line 360 \"ntp_parser.y\" { struct peer_node * my_node = create_peer_node ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Address_node ) , NULL ) ; if ( my_node ) enqueue ( cfgt . peers , my_node ) ; } break ; case 27 : # line 377 \"ntp_parser.y\" { ( yyval . Address_node ) = create_address_node ( ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) , AF_INET ) ; } break ; case 28 : # line 378 \"ntp_parser.y\" { ( yyval . Address_node ) = create_address_node ( ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) , AF_INET6 ) ; } break ; case 29 : # line 382 \"ntp_parser.y\" { ( yyval . Address_node ) = create_address_node ( ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) , 0 ) ; } break ; case 30 : # line 386 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 31 : # line 387 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 32 : # line 391 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 33 : # line 392 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 34 : # line 393 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 35 : # line 394 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 36 : # line 395 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 37 : # line 396 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 38 : # line 397 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 39 : # line 398 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 40 : # line 399 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 41 : # line 400 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 42 : # line 401 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 43 : # line 402 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 44 : # line 403 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 45 : # line 404 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 46 : # line 405 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 47 : # line 415 \"ntp_parser.y\" { struct unpeer_node * my_node = create_unpeer_node ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Address_node ) ) ; if ( my_node ) enqueue ( cfgt . unpeers , my_node ) ; } break ; case 50 : # line 434 \"ntp_parser.y\" { cfgt . broadcastclient = 1 ; } break ; case 51 : # line 436 \"ntp_parser.y\" { append_queue ( cfgt . manycastserver , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 52 : # line 438 \"ntp_parser.y\" { append_queue ( cfgt . multicastclient , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 53 : # line 449 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ) ; } break ; case 54 : # line 451 \"ntp_parser.y\" { cfgt . auth . control_key = ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ; } break ; case 55 : # line 453 \"ntp_parser.y\" { cfgt . auth . cryptosw ++ ; append_queue ( cfgt . auth . crypto_cmd_list , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 56 : # line 458 \"ntp_parser.y\" { cfgt . auth . keys = ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ; } break ; case 57 : # line 460 \"ntp_parser.y\" { cfgt . auth . keysdir = ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ; } break ; case 58 : # line 462 \"ntp_parser.y\" { cfgt . auth . request_key = ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ; } break ; case 59 : # line 464 \"ntp_parser.y\" { cfgt . auth . revoke = ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ; } break ; case 60 : # line 466 \"ntp_parser.y\" { cfgt . auth . trusted_key_list = ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ; } break ; case 61 : # line 468 \"ntp_parser.y\" { cfgt . auth . ntp_signd_socket = ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ; } break ; case 63 : # line 474 \"ntp_parser.y\" { ( yyval . Queue ) = create_queue ( ) ; } break ; case 64 : # line 479 \"ntp_parser.y\" { if ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) != NULL ) ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; else ( yyval . Queue ) = ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) ; } break ; case 65 : # line 486 \"ntp_parser.y\" { if ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) != NULL ) ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; else ( yyval . Queue ) = create_queue ( ) ; } break ; case 66 : # line 496 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; } break ; case 67 : # line 498 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; } break ; case 68 : # line 500 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; } break ; case 69 : # line 502 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; } break ; case 70 : # line 504 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; } break ; case 71 : # line 506 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; } break ; case 72 : # line 508 \"ntp_parser.y\" { ( yyval . Attr_val ) = NULL ; cfgt . auth . revoke = ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ; msyslog ( LOG_WARNING , \"\\'crypto<S2SV_blank>revoke<S2SV_blank>%d\\'<S2SV_blank>is<S2SV_blank>deprecated,<S2SV_blank>\" \"please<S2SV_blank>use<S2SV_blank>\\'revoke<S2SV_blank>%d\\'<S2SV_blank>instead.\" , cfgt . auth . revoke , cfgt . auth . revoke ) ; } break ; case 73 : # line 525 \"ntp_parser.y\" { append_queue ( cfgt . orphan_cmds , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 74 : # line 529 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 75 : # line 530 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 76 : # line 535 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( double ) ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 77 : # line 537 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( double ) ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 78 : # line 539 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( double ) ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 79 : # line 541 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( double ) ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 80 : # line 543 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( double ) ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 81 : # line 545 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 82 : # line 547 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 83 : # line 549 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 84 : # line 551 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 85 : # line 553 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( double ) ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 86 : # line 555 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( double ) ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 87 : # line 565 \"ntp_parser.y\" { append_queue ( cfgt . stats_list , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 88 : # line 567 \"ntp_parser.y\" { if ( input_from_file ) cfgt . stats_dir = ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ; else { free ( ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; yyerror ( \"statsdir<S2SV_blank>remote<S2SV_blank>configuration<S2SV_blank>ignored\" ) ; } } break ; case 89 : # line 576 \"ntp_parser.y\" { enqueue ( cfgt . filegen_opts , create_filegen_node ( ( yyvsp [ ( 2 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Queue ) ) ) ; } break ; case 90 : # line 583 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , create_ival ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ) ; } break ; case 91 : # line 584 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( create_ival ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ) ; } break ; case 100 : # line 600 \"ntp_parser.y\" { if ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) != NULL ) ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; else ( yyval . Queue ) = ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) ; } break ; case 101 : # line 607 \"ntp_parser.y\" { if ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) != NULL ) ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; else ( yyval . Queue ) = create_queue ( ) ; } break ; case 102 : # line 617 \"ntp_parser.y\" { if ( input_from_file ) ( yyval . Attr_val ) = create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; else { ( yyval . Attr_val ) = NULL ; free ( ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; yyerror ( \"filegen<S2SV_blank>file<S2SV_blank>remote<S2SV_blank>configuration<S2SV_blank>ignored\" ) ; } } break ; case 103 : # line 627 \"ntp_parser.y\" { if ( input_from_file ) ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; else { ( yyval . Attr_val ) = NULL ; yyerror ( \"filegen<S2SV_blank>type<S2SV_blank>remote<S2SV_blank>configuration<S2SV_blank>ignored\" ) ; } } break ; case 104 : # line 636 \"ntp_parser.y\" { if ( input_from_file ) ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; else { ( yyval . Attr_val ) = NULL ; yyerror ( \"filegen<S2SV_blank>link<S2SV_blank>remote<S2SV_blank>configuration<S2SV_blank>ignored\" ) ; } } break ; case 105 : # line 645 \"ntp_parser.y\" { if ( input_from_file ) ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; else { ( yyval . Attr_val ) = NULL ; yyerror ( \"filegen<S2SV_blank>nolink<S2SV_blank>remote<S2SV_blank>configuration<S2SV_blank>ignored\" ) ; } } break ; case 106 : # line 653 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 107 : # line 654 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 115 : # line 674 \"ntp_parser.y\" { append_queue ( cfgt . discard_opts , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 116 : # line 678 \"ntp_parser.y\" { append_queue ( cfgt . mru_opts , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 117 : # line 682 \"ntp_parser.y\" { enqueue ( cfgt . restrict_opts , create_restrict_node ( ( yyvsp [ ( 2 ) - ( 3 ) ] . Address_node ) , NULL , ( yyvsp [ ( 3 ) - ( 3 ) ] . Queue ) , ip_file -> line_no ) ) ; } break ; case 118 : # line 687 \"ntp_parser.y\" { enqueue ( cfgt . restrict_opts , create_restrict_node ( ( yyvsp [ ( 2 ) - ( 5 ) ] . Address_node ) , ( yyvsp [ ( 4 ) - ( 5 ) ] . Address_node ) , ( yyvsp [ ( 5 ) - ( 5 ) ] . Queue ) , ip_file -> line_no ) ) ; } break ; case 119 : # line 692 \"ntp_parser.y\" { enqueue ( cfgt . restrict_opts , create_restrict_node ( NULL , NULL , ( yyvsp [ ( 3 ) - ( 3 ) ] . Queue ) , ip_file -> line_no ) ) ; } break ; case 120 : # line 697 \"ntp_parser.y\" { enqueue ( cfgt . restrict_opts , create_restrict_node ( create_address_node ( estrdup ( \"0.0.0.0\" ) , AF_INET ) , create_address_node ( estrdup ( \"0.0.0.0\" ) , AF_INET ) , ( yyvsp [ ( 4 ) - ( 4 ) ] . Queue ) , ip_file -> line_no ) ) ; } break ; case 121 : # line 710 \"ntp_parser.y\" { enqueue ( cfgt . restrict_opts , create_restrict_node ( create_address_node ( estrdup ( \"::\" ) , AF_INET6 ) , create_address_node ( estrdup ( \"::\" ) , AF_INET6 ) , ( yyvsp [ ( 4 ) - ( 4 ) ] . Queue ) , ip_file -> line_no ) ) ; } break ; case 122 : # line 723 \"ntp_parser.y\" { enqueue ( cfgt . restrict_opts , create_restrict_node ( NULL , NULL , enqueue ( ( yyvsp [ ( 3 ) - ( 3 ) ] . Queue ) , create_ival ( ( yyvsp [ ( 2 ) - ( 3 ) ] . Integer ) ) ) , ip_file -> line_no ) ) ; } break ; case 123 : # line 734 \"ntp_parser.y\" { ( yyval . Queue ) = create_queue ( ) ; } break ; case 124 : # line 736 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , create_ival ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ) ; } break ; case 139 : # line 758 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 140 : # line 760 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 141 : # line 764 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 142 : # line 765 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 143 : # line 766 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 144 : # line 771 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 145 : # line 773 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 146 : # line 777 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 147 : # line 778 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 148 : # line 779 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 149 : # line 780 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 150 : # line 781 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 151 : # line 782 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 152 : # line 783 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 153 : # line 784 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 154 : # line 793 \"ntp_parser.y\" { enqueue ( cfgt . fudge , create_addr_opts_node ( ( yyvsp [ ( 2 ) - ( 3 ) ] . Address_node ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Queue ) ) ) ; } break ; case 155 : # line 798 \"ntp_parser.y\" { enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 156 : # line 800 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 157 : # line 804 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 158 : # line 805 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 159 : # line 806 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 160 : # line 807 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; } break ; case 161 : # line 808 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 162 : # line 809 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 163 : # line 810 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 164 : # line 811 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 165 : # line 820 \"ntp_parser.y\" { append_queue ( cfgt . enable_opts , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 166 : # line 822 \"ntp_parser.y\" { append_queue ( cfgt . disable_opts , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 167 : # line 827 \"ntp_parser.y\" { if ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) != NULL ) ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; else ( yyval . Queue ) = ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) ; } break ; case 168 : # line 834 \"ntp_parser.y\" { if ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) != NULL ) ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; else ( yyval . Queue ) = create_queue ( ) ; } break ; case 169 : # line 843 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 170 : # line 844 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 171 : # line 845 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 172 : # line 846 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 173 : # line 847 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 174 : # line 848 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 175 : # line 850 \"ntp_parser.y\" { if ( input_from_file ) ( yyval . Attr_val ) = create_attr_ival ( T_Flag , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; else { ( yyval . Attr_val ) = NULL ; yyerror ( \"enable/disable<S2SV_blank>stats<S2SV_blank>remote<S2SV_blank>configuration<S2SV_blank>ignored\" ) ; } } break ; case 176 : # line 865 \"ntp_parser.y\" { append_queue ( cfgt . tinker , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 177 : # line 869 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 178 : # line 870 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 179 : # line 874 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 180 : # line 875 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 181 : # line 876 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 182 : # line 877 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 183 : # line 878 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 184 : # line 879 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 185 : # line 880 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ; } break ; case 187 : # line 891 \"ntp_parser.y\" { if ( curr_include_level >= MAXINCLUDELEVEL ) { fprintf ( stderr , \"getconfig:<S2SV_blank>Maximum<S2SV_blank>include<S2SV_blank>file<S2SV_blank>level<S2SV_blank>exceeded.\\\\n\" ) ; msyslog ( LOG_ERR , \"getconfig:<S2SV_blank>Maximum<S2SV_blank>include<S2SV_blank>file<S2SV_blank>level<S2SV_blank>exceeded.\" ) ; } else { fp [ curr_include_level + 1 ] = F_OPEN ( FindConfig ( ( yyvsp [ ( 2 ) - ( 3 ) ] . String ) ) , \"r\" ) ; if ( fp [ curr_include_level + 1 ] == NULL ) { fprintf ( stderr , \"getconfig:<S2SV_blank>Couldn\\'t<S2SV_blank>open<S2SV_blank><%s>\\\\n\" , FindConfig ( ( yyvsp [ ( 2 ) - ( 3 ) ] . String ) ) ) ; msyslog ( LOG_ERR , \"getconfig:<S2SV_blank>Couldn\\'t<S2SV_blank>open<S2SV_blank><%s>\" , FindConfig ( ( yyvsp [ ( 2 ) - ( 3 ) ] . String ) ) ) ; } else ip_file = fp [ ++ curr_include_level ] ; } } break ; case 188 : # line 907 \"ntp_parser.y\" { while ( curr_include_level != - 1 ) FCLOSE ( fp [ curr_include_level -- ] ) ; } break ; case 189 : # line 913 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ) ; } break ; case 190 : # line 915 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ) ; } break ; case 191 : # line 917 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_dval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ) ; } break ; case 192 : # line 919 \"ntp_parser.y\" { } break ; case 193 : # line 921 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ) ; } break ; case 194 : # line 924 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ) ; } break ; case 195 : # line 926 \"ntp_parser.y\" { if ( input_from_file ) enqueue ( cfgt . vars , create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ) ; else { free ( ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; yyerror ( \"logfile<S2SV_blank>remote<S2SV_blank>configuration<S2SV_blank>ignored\" ) ; } } break ; case 196 : # line 937 \"ntp_parser.y\" { append_queue ( cfgt . logconfig , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 197 : # line 939 \"ntp_parser.y\" { append_queue ( cfgt . phone , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 198 : # line 941 \"ntp_parser.y\" { if ( input_from_file ) enqueue ( cfgt . vars , create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ) ; else { free ( ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ; yyerror ( \"saveconfigdir<S2SV_blank>remote<S2SV_blank>configuration<S2SV_blank>ignored\" ) ; } } break ; case 199 : # line 951 \"ntp_parser.y\" { enqueue ( cfgt . setvar , ( yyvsp [ ( 2 ) - ( 2 ) ] . Set_var ) ) ; } break ; case 200 : # line 953 \"ntp_parser.y\" { enqueue ( cfgt . trap , create_addr_opts_node ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Address_node ) , NULL ) ) ; } break ; case 201 : # line 955 \"ntp_parser.y\" { enqueue ( cfgt . trap , create_addr_opts_node ( ( yyvsp [ ( 2 ) - ( 3 ) ] . Address_node ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Queue ) ) ) ; } break ; case 202 : # line 957 \"ntp_parser.y\" { append_queue ( cfgt . ttl , ( yyvsp [ ( 2 ) - ( 2 ) ] . Queue ) ) ; } break ; case 203 : # line 959 \"ntp_parser.y\" { enqueue ( cfgt . qos , create_attr_sval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ) ; } break ; case 204 : # line 964 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_sval ( T_Driftfile , ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) ) ) ; } break ; case 205 : # line 966 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_dval ( T_WanderThreshold , ( yyvsp [ ( 2 ) - ( 2 ) ] . Double ) ) ) ; enqueue ( cfgt . vars , create_attr_sval ( T_Driftfile , ( yyvsp [ ( 1 ) - ( 2 ) ] . String ) ) ) ; } break ; case 206 : # line 969 \"ntp_parser.y\" { enqueue ( cfgt . vars , create_attr_sval ( T_Driftfile , \"\\\\0\" ) ) ; } break ; case 207 : # line 974 \"ntp_parser.y\" { ( yyval . Set_var ) = create_setvar_node ( ( yyvsp [ ( 1 ) - ( 4 ) ] . String ) , ( yyvsp [ ( 3 ) - ( 4 ) ] . String ) , ( yyvsp [ ( 4 ) - ( 4 ) ] . Integer ) ) ; } break ; case 208 : # line 976 \"ntp_parser.y\" { ( yyval . Set_var ) = create_setvar_node ( ( yyvsp [ ( 1 ) - ( 3 ) ] . String ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . String ) , 0 ) ; } break ; case 209 : # line 981 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 210 : # line 982 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 211 : # line 986 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ; } break ; case 212 : # line 987 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_pval ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Integer ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Address_node ) ) ; } break ; case 213 : # line 991 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 214 : # line 992 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 215 : # line 997 \"ntp_parser.y\" { <S2SV_StartBug> char prefix = ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> char * type = ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) + 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( prefix != '+' && prefix != '-' && prefix != '=' ) { <S2SV_EndBug> yyerror ( \"Logconfig<S2SV_blank>prefix<S2SV_blank>is<S2SV_blank>not<S2SV_blank>\\'+\\',<S2SV_blank>\\'-\\'<S2SV_blank>or<S2SV_blank>\\'=\\'\\\\n\" ) ; } else ( yyval . Attr_val ) = create_attr_sval ( prefix , estrdup ( type ) ) ; <S2SV_StartBug> YYFREE ( ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) ) ; <S2SV_EndBug> } break ; case 216 : # line 1012 \"ntp_parser.y\" { enqueue ( cfgt . nic_rules , create_nic_rule_node ( ( yyvsp [ ( 3 ) - ( 3 ) ] . Integer ) , NULL , ( yyvsp [ ( 2 ) - ( 3 ) ] . Integer ) ) ) ; } break ; case 217 : # line 1017 \"ntp_parser.y\" { enqueue ( cfgt . nic_rules , create_nic_rule_node ( 0 , ( yyvsp [ ( 3 ) - ( 3 ) ] . String ) , ( yyvsp [ ( 2 ) - ( 3 ) ] . Integer ) ) ) ; } break ; case 227 : # line 1048 \"ntp_parser.y\" <S2SV_StartBug> { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , create_ival ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ) ; } <S2SV_EndBug> break ; case 228 : # line 1049 \"ntp_parser.y\" <S2SV_StartBug> { ( yyval . Queue ) = enqueue_in_new_queue ( create_ival ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ) ; } <S2SV_EndBug> break ; case 229 : # line 1054 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 230 : # line 1056 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 231 : # line 1061 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( 'i' , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 233 : # line 1067 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_shorts ( '-' , ( yyvsp [ ( 2 ) - ( 5 ) ] . Integer ) , ( yyvsp [ ( 4 ) - ( 5 ) ] . Integer ) ) ; } break ; case 234 : # line 1071 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , create_pval ( ( yyvsp [ ( 2 ) - ( 2 ) ] . String ) ) ) ; } break ; case 235 : # line 1072 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( create_pval ( ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) ) ) ; } break ; case 236 : # line 1076 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Address_node ) ) ; } break ; <S2SV_StartBug> case 237 : <S2SV_EndBug> # line 1077 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Address_node ) ) ; } break ; case 238 : <S2SV_StartBug> # line 1082 \"ntp_parser.y\" <S2SV_EndBug> { if ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) != 0 && ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) != 1 ) { yyerror ( \"Integer<S2SV_blank>value<S2SV_blank>is<S2SV_blank>not<S2SV_blank>boolean<S2SV_blank>(0<S2SV_blank>or<S2SV_blank>1).<S2SV_blank>Assuming<S2SV_blank>1\" ) ; ( yyval . Integer ) = 1 ; } else ( yyval . Integer ) = ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ; } break ; case 239 : <S2SV_StartBug> # line 1090 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Integer ) = 1 ; } break ; case 240 : <S2SV_StartBug> # line 1091 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Integer ) = 0 ; } break ; case 241 : <S2SV_StartBug> # line 1095 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Double ) = ( double ) ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ; } break ; case 243 : <S2SV_StartBug> # line 1106 \"ntp_parser.y\" <S2SV_EndBug> { cfgt . sim_details = create_sim_node ( ( yyvsp [ ( 3 ) - ( 5 ) ] . Queue ) , ( yyvsp [ ( 4 ) - ( 5 ) ] . Queue ) ) ; old_config_style = 1 ; } break ; case 244 : <S2SV_StartBug> # line 1120 \"ntp_parser.y\" <S2SV_EndBug> { old_config_style = 0 ; } break ; case 245 : <S2SV_StartBug> # line 1124 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 3 ) ] . Attr_val ) ) ; } break ; case 246 : <S2SV_StartBug> # line 1125 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 247 : <S2SV_StartBug> # line 1129 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Double ) ) ; } break ; case 248 : <S2SV_StartBug> # line 1130 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Double ) ) ; } break ; case 249 : <S2SV_StartBug> # line 1134 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Sim_server ) ) ; } break ; case 250 : <S2SV_StartBug> # line 1135 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Sim_server ) ) ; } break ; case 251 : <S2SV_StartBug> # line 1140 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Sim_server ) = create_sim_server ( ( yyvsp [ ( 1 ) - ( 5 ) ] . Address_node ) , ( yyvsp [ ( 3 ) - ( 5 ) ] . Double ) , ( yyvsp [ ( 4 ) - ( 5 ) ] . Queue ) ) ; } break ; case 252 : <S2SV_StartBug> # line 1144 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Double ) = ( yyvsp [ ( 3 ) - ( 4 ) ] . Double ) ; } break ; case 253 : <S2SV_StartBug> # line 1148 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Address_node ) = ( yyvsp [ ( 3 ) - ( 3 ) ] . Address_node ) ; } break ; case 254 : <S2SV_StartBug> # line 1152 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Sim_script ) ) ; } break ; case 255 : <S2SV_StartBug> # line 1153 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Sim_script ) ) ; } break ; case 256 : <S2SV_StartBug> # line 1158 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Sim_script ) = create_sim_script_info ( ( yyvsp [ ( 3 ) - ( 6 ) ] . Double ) , ( yyvsp [ ( 5 ) - ( 6 ) ] . Queue ) ) ; } break ; case 257 : <S2SV_StartBug> # line 1162 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 3 ) ] . Attr_val ) ) ; } break ; case 258 : <S2SV_StartBug> # line 1163 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 259 : <S2SV_StartBug> # line 1168 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Double ) ) ; } break ; case 260 : <S2SV_StartBug> # line 1170 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Double ) ) ; } break ; case 261 : <S2SV_StartBug> # line 1172 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Double ) ) ; } break ; case 262 : <S2SV_StartBug> # line 1174 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Double ) ) ; } break ; case 263 : <S2SV_StartBug> # line 1176 \"ntp_parser.y\" <S2SV_EndBug> { ( yyval . Attr_val ) = create_attr_dval ( ( yyvsp [ ( 1 ) - ( 3 ) ] . Integer ) , ( yyvsp [ ( 3 ) - ( 3 ) ] . Double ) ) ; } break ; <S2SV_StartBug> # line 3826 \"ntp_parser.c\" <S2SV_EndBug> default : break ; } YY_SYMBOL_PRINT ( \"-><S2SV_blank>$$<S2SV_blank>=\" , yyr1 [ yyn ] , & yyval , & yyloc ) ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; * ++ yyvsp = yyval ; yyn = yyr1 [ yyn ] ; yystate = yypgoto [ yyn - YYNTOKENS ] + * yyssp ; if ( 0 <= yystate && yystate <= YYLAST && yycheck [ yystate ] == * yyssp ) yystate = yytable [ yystate ] ; else yystate = yydefgoto [ yyn - YYNTOKENS ] ; goto yynewstate ; yyerrlab : if ( ! yyerrstatus ) { ++ yynerrs ; # if ! YYERROR_VERBOSE yyerror ( YY_ ( \"syntax<S2SV_blank>error\" ) ) ; # else { YYSIZE_T yysize = yysyntax_error ( 0 , yystate , yychar ) ; if ( yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM ) { YYSIZE_T yyalloc = 2 * yysize ; if ( ! ( yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM ) ) yyalloc = YYSTACK_ALLOC_MAXIMUM ; if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; yymsg = ( char * ) YYSTACK_ALLOC ( yyalloc ) ; if ( yymsg ) yymsg_alloc = yyalloc ; else { yymsg = yymsgbuf ; yymsg_alloc = sizeof yymsgbuf ; } } if ( 0 < yysize && yysize <= yymsg_alloc ) { ( void ) yysyntax_error ( yymsg , yystate , yychar ) ; yyerror ( yymsg ) ; } else { yyerror ( YY_ ( \"syntax<S2SV_blank>error\" ) ) ; if ( yysize != 0 ) goto yyexhaustedlab ; } } # endif } if ( yyerrstatus == 3 ) { if ( yychar <= YYEOF ) { if ( yychar == YYEOF ) YYABORT ; } else { yydestruct ( \"Error:<S2SV_blank>discarding\" , yytoken , & yylval ) ; yychar = YYEMPTY ; } } goto yyerrlab1 ; yyerrorlab : if ( 0 ) goto yyerrorlab ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; yystate = * yyssp ; goto yyerrlab1 ; yyerrlab1 : yyerrstatus = 3 ; for ( ; ; ) { yyn = yypact [ yystate ] ; if ( yyn != YYPACT_NINF ) { yyn += YYTERROR ; if ( 0 <= yyn && yyn <= YYLAST && yycheck [ yyn ] == YYTERROR ) { yyn = yytable [ yyn ] ; if ( 0 < yyn ) break ; } } if ( yyssp == yyss ) YYABORT ; yydestruct ( \"Error:<S2SV_blank>popping\" , yystos [ yystate ] , yyvsp ) ; YYPOPSTACK ( 1 ) ; yystate = * yyssp ; YY_STACK_PRINT ( yyss , yyssp ) ; } * ++ yyvsp = yylval ; YY_SYMBOL_PRINT ( \"Shifting\" , yystos [ yyn ] , yyvsp , yylsp ) ; yystate = yyn ; goto yynewstate ; yyacceptlab : yyresult = 0 ; goto yyreturn ; yyabortlab : yyresult = 1 ; goto yyreturn ; # if ! defined ( yyoverflow ) || YYERROR_VERBOSE yyexhaustedlab : yyerror ( YY_ ( \"memory<S2SV_blank>exhausted\" ) ) ; yyresult = 2 ; # endif yyreturn : if ( yychar != YYEMPTY ) yydestruct ( \"Cleanup:<S2SV_blank>discarding<S2SV_blank>lookahead\" , yytoken , & yylval ) ; YYPOPSTACK ( yylen ) ; YY_STACK_PRINT ( yyss , yyssp ) ; while ( yyssp != yyss ) { yydestruct ( \"Cleanup:<S2SV_blank>popping\" , yystos [ * yyssp ] , yyvsp ) ; YYPOPSTACK ( 1 ) ; } # ifndef yyoverflow if ( yyss != yyssa ) YYSTACK_FREE ( yyss ) ; # endif # if YYERROR_VERBOSE if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; # endif return YYID ( yyresult ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { char prefix <S2SV_ModEnd> ; char * <S2SV_ModStart> char * type ; switch ( <S2SV_ModEnd> ( yyvsp [ <S2SV_ModStart> . String ) [ 0 ] ) { case '+' : case '-' : case '=' : prefix = ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) [ 0 ] ; type = ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) <S2SV_ModStart> + 1 ; break ; default : prefix = '=' ; type = ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) ; } ( yyval . Attr_val ) = create_attr_sval ( prefix , estrdup ( type ) ) ; YYFREE ( ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) ) ; } break ; case 216 : # line 1022 \"ntp_parser.y\" { enqueue ( cfgt . nic_rules , create_nic_rule_node ( ( yyvsp [ ( 3 ) - ( 3 ) ] . Integer ) , NULL , ( yyvsp [ ( 2 ) - ( 3 ) ] . Integer ) ) ) ; } break ; case 217 : # line 1027 \"ntp_parser.y\" { enqueue ( cfgt . nic_rules , create_nic_rule_node ( 0 , ( yyvsp [ ( 3 ) - ( 3 ) ] . String ) , ( yyvsp [ ( 2 ) - ( 3 ) ] . Integer ) ) ) ; } break ; case 227 : # line 1058 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , create_ival ( ( yyvsp [ ( 2 ) - ( 2 ) ] . Integer ) ) ) ; } break ; case 228 : # line 1059 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( create_ival ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ) ; } break ; case 229 : # line 1064 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Attr_val ) ) ; } break ; case 230 : # line 1066 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 ) ] . Attr_val ) ) ; } break ; case 231 : # line 1071 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_ival ( 'i' , ( yyvsp [ ( 1 ) - ( 1 ) ] . Integer ) ) ; } break ; case 233 : # line 1077 \"ntp_parser.y\" { ( yyval . Attr_val ) = create_attr_shorts ( '-' , ( yyvsp [ ( 2 ) - ( 5 ) ] . Integer ) , ( yyvsp [ ( 4 ) - ( 5 ) ] . Integer ) ) ; } break ; case 234 : # line 1081 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] . Queue ) , create_pval ( ( yyvsp [ ( 2 ) - ( 2 <S2SV_ModEnd> ) ] . <S2SV_ModStart> String ) ) ) ; } break ; case 235 : # line 1082 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue_in_new_queue ( create_pval ( ( yyvsp [ ( 1 ) - ( 1 ) ] . String ) ) ) ; } break ; case 236 : # line 1086 \"ntp_parser.y\" { ( yyval . Queue ) = enqueue ( ( yyvsp [ ( 1 ) - ( 2 ) ] <S2SV_ModEnd> . Queue ) <S2SV_ModStart> . Queue ) , ( yyvsp [ ( 2 ) - ( 2 ) ] . Address_node ) ) ; } break ; case 237 : # line 1087 \"ntp_parser.y\" { ( yyval <S2SV_ModEnd> . Queue ) <S2SV_ModStart> . Queue ) <S2SV_ModEnd> = enqueue_in_new_queue ( <S2SV_ModStart> = enqueue_in_new_queue ( ( yyvsp [ ( 1 ) - ( 1 <S2SV_ModEnd> ) ] . <S2SV_ModStart> break ; case <S2SV_ModEnd> 238 : # <S2SV_ModStart> : # line 1092 <S2SV_ModEnd> \"ntp_parser.y\" { if <S2SV_ModStart> : # line 1100 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1101 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1105 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1116 <S2SV_ModEnd> \"ntp_parser.y\" { cfgt <S2SV_ModStart> : # line 1130 <S2SV_ModEnd> \"ntp_parser.y\" { old_config_style <S2SV_ModStart> : # line 1134 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1135 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1139 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1140 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1144 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1145 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1150 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1154 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1158 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1162 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1163 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1168 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1172 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1173 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1178 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1180 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1182 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1184 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> : # line 1186 <S2SV_ModEnd> \"ntp_parser.y\" { ( <S2SV_ModStart> ; # line 3836 <S2SV_ModEnd> \"ntp_parser.c\" default :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2140\n\n```\nCWE-20 static int dispatch_discard_io ( struct xen_blkif * blkif , struct blkif_request * req ) { int err = 0 ; int status = BLKIF_RSP_OKAY ; struct block_device * bdev = blkif -> vbd . bdev ; unsigned long secure ; <S2SV_StartBug> blkif -> st_ds_req ++ ; <S2SV_EndBug> xen_blkif_get ( blkif ) ; secure = ( blkif -> vbd . discard_secure && ( req -> u . discard . flag & BLKIF_DISCARD_SECURE ) ) ? BLKDEV_DISCARD_SECURE : 0 ; err = blkdev_issue_discard ( bdev , req -> u . discard . sector_number , req -> u . discard . nr_sectors , GFP_KERNEL , secure ) ; <S2SV_StartBug> if ( err == - EOPNOTSUPP ) { <S2SV_EndBug> pr_debug ( DRV_PFX \"discard<S2SV_blank>op<S2SV_blank>failed,<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; status = BLKIF_RSP_EOPNOTSUPP ; } else if ( err ) status = BLKIF_RSP_ERROR ; make_response ( blkif , req -> u . discard . id , req -> operation , status ) ; xen_blkif_put ( blkif ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long secure ; struct phys_req preq ; preq . sector_number = req -> u . discard . sector_number ; preq . nr_sects = req -> u . discard . nr_sectors ; err = xen_vbd_translate ( & preq , blkif , WRITE ) ; if ( err ) { pr_warn ( DRV_PFX \"access<S2SV_blank>denied:<S2SV_blank>DISCARD<S2SV_blank>[%llu->%llu]<S2SV_blank>on<S2SV_blank>dev=%04x\\\\n\" , preq . sector_number , preq . sector_number + preq . nr_sects , blkif -> vbd . pdevice ) ; goto fail_response ; } <S2SV_ModStart> secure ) ; fail_response :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2140\n\n```\nCWE-20 static int dispatch_discard_io ( struct xen_blkif * blkif , struct blkif_request * req ) { int err = 0 ; int status = BLKIF_RSP_OKAY ; struct block_device * bdev = blkif -> vbd . bdev ; unsigned long secure ; <S2SV_StartBug> blkif -> st_ds_req ++ ; <S2SV_EndBug> xen_blkif_get ( blkif ) ; secure = ( blkif -> vbd . discard_secure && ( req -> u . discard . flag & BLKIF_DISCARD_SECURE ) ) ? BLKDEV_DISCARD_SECURE : 0 ; err = blkdev_issue_discard ( bdev , req -> u . discard . sector_number , req -> u . discard . nr_sectors , GFP_KERNEL , secure ) ; <S2SV_StartBug> if ( err == - EOPNOTSUPP ) { <S2SV_EndBug> pr_debug ( DRV_PFX \"discard<S2SV_blank>op<S2SV_blank>failed,<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; status = BLKIF_RSP_EOPNOTSUPP ; } else if ( err ) status = BLKIF_RSP_ERROR ; make_response ( blkif , req -> u . discard . id , req -> operation , status ) ; xen_blkif_put ( blkif ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long secure ; struct phys_req preq ; preq . sector_number = req -> u . discard . sector_number ; preq . nr_sects = req -> u . discard . nr_sectors ; err = xen_vbd_translate ( & preq , blkif , WRITE ) ; if ( err ) { pr_warn ( DRV_PFX \"access<S2SV_blank>denied:<S2SV_blank>DISCARD<S2SV_blank>[%llu->%llu]<S2SV_blank>on<S2SV_blank>dev=%04x\\\\n\" , preq . sector_number , preq . sector_number + preq . nr_sects , blkif -> vbd . pdevice ) ; goto fail_response ; } <S2SV_ModStart> secure ) ; fail_response :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 int sqlite3Fts3InitTokenizer ( Fts3Hash * pHash , const char * zArg , sqlite3_tokenizer * * ppTok , char * * pzErr ) { int rc ; char * z = ( char * ) zArg ; int n = 0 ; char * zCopy ; char * zEnd ; sqlite3_tokenizer_module * m ; zCopy = sqlite3_mprintf ( \"%s\" , zArg ) ; if ( ! zCopy ) return SQLITE_NOMEM ; zEnd = & zCopy [ strlen ( zCopy ) ] ; z = ( char * ) sqlite3Fts3NextToken ( zCopy , & n ) ; if ( z == 0 ) { assert ( n == 0 ) ; z = zCopy ; } z [ n ] = '\\\\0' ; sqlite3Fts3Dequote ( z ) ; m = ( sqlite3_tokenizer_module * ) sqlite3Fts3HashFind ( pHash , z , ( int ) strlen ( z ) + 1 ) ; if ( ! m ) { sqlite3Fts3ErrMsg ( pzErr , \"unknown<S2SV_blank>tokenizer:<S2SV_blank>%s\" , z ) ; rc = SQLITE_ERROR ; } else { char const * * aArg = 0 ; int iArg = 0 ; z = & z [ n + 1 ] ; while ( z < zEnd && ( NULL != ( z = ( char * ) sqlite3Fts3NextToken ( z , & n ) ) ) ) { <S2SV_StartBug> int nNew = sizeof ( char * ) * ( iArg + 1 ) ; <S2SV_EndBug> <S2SV_StartBug> char const * * aNew = ( const char * * ) sqlite3_realloc ( ( void * ) aArg , nNew ) ; <S2SV_EndBug> if ( ! aNew ) { sqlite3_free ( zCopy ) ; sqlite3_free ( ( void * ) aArg ) ; return SQLITE_NOMEM ; } aArg = aNew ; aArg [ iArg ++ ] = z ; z [ n ] = '\\\\0' ; sqlite3Fts3Dequote ( z ) ; z = & z [ n + 1 ] ; } rc = m -> xCreate ( iArg , aArg , ppTok ) ; assert ( rc != SQLITE_OK || * ppTok ) ; if ( rc != SQLITE_OK ) { sqlite3Fts3ErrMsg ( pzErr , \"unknown<S2SV_blank>tokenizer\" ) ; } else { ( * ppTok ) -> pModule = m ; } sqlite3_free ( ( void * ) aArg ) ; } sqlite3_free ( zCopy ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { sqlite3_int64 <S2SV_ModEnd> nNew = sizeof <S2SV_ModStart> * * ) sqlite3_realloc64 <S2SV_ModEnd> ( ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 SQLRETURN SQLSetDescField ( SQLHDESC descriptor_handle , SQLSMALLINT rec_number , SQLSMALLINT field_identifier , SQLPOINTER value , SQLINTEGER buffer_length ) { DMHDESC descriptor = ( DMHDESC ) descriptor_handle ; SQLRETURN ret ; SQLCHAR s1 [ 100 + LOG_MESSAGE_LEN ] ; int isStrField = 0 ; if ( ! __validate_desc ( descriptor ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>SQL_INVALID_HANDLE\" ) ; return SQL_INVALID_HANDLE ; } function_entry ( descriptor ) ; if ( log_info . log_flag ) { <S2SV_StartBug> sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tEntry:\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tDescriptor<S2SV_blank>=<S2SV_blank>%p\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tRec<S2SV_blank>Number<S2SV_blank>=<S2SV_blank>%d\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tField<S2SV_blank>Ident<S2SV_blank>=<S2SV_blank>%s\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tValue<S2SV_blank>=<S2SV_blank>%p\\\\\\n<S2SV_blank>\\\\n\\\\t\\\\t\\\\tBuffer<S2SV_blank>Length<S2SV_blank>=<S2SV_blank>%d\" , <S2SV_EndBug> descriptor , rec_number , __desc_attr_as_string ( s1 , field_identifier ) , value , ( int ) buffer_length ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } thread_protect ( SQL_HANDLE_DESC , descriptor ) ; if ( descriptor -> connection -> state < STATE_C4 ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>HY010\" ) ; __post_internal_error ( & descriptor -> error , ERROR_HY010 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( __check_stmt_from_desc ( descriptor , STATE_S8 ) || __check_stmt_from_desc ( descriptor , STATE_S9 ) || __check_stmt_from_desc ( descriptor , STATE_S10 ) || __check_stmt_from_desc ( descriptor , STATE_S11 ) || __check_stmt_from_desc ( descriptor , STATE_S12 ) || __check_stmt_from_desc ( descriptor , STATE_S13 ) || __check_stmt_from_desc ( descriptor , STATE_S14 ) || __check_stmt_from_desc ( descriptor , STATE_S15 ) ) { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>HY010\" ) ; __post_internal_error ( & descriptor -> error , ERROR_HY010 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( rec_number < 0 ) { __post_internal_error ( & descriptor -> error , ERROR_07009 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } switch ( field_identifier ) { case SQL_DESC_ALLOC_TYPE : case SQL_DESC_ARRAY_SIZE : case SQL_DESC_ARRAY_STATUS_PTR : case SQL_DESC_BIND_OFFSET_PTR : case SQL_DESC_BIND_TYPE : case SQL_DESC_COUNT : case SQL_DESC_ROWS_PROCESSED_PTR : case SQL_DESC_AUTO_UNIQUE_VALUE : case SQL_DESC_CASE_SENSITIVE : case SQL_DESC_CONCISE_TYPE : case SQL_DESC_DATA_PTR : case SQL_DESC_DATETIME_INTERVAL_CODE : case SQL_DESC_DATETIME_INTERVAL_PRECISION : case SQL_DESC_DISPLAY_SIZE : case SQL_DESC_FIXED_PREC_SCALE : case SQL_DESC_INDICATOR_PTR : case SQL_DESC_LENGTH : case SQL_DESC_NULLABLE : case SQL_DESC_NUM_PREC_RADIX : case SQL_DESC_OCTET_LENGTH : case SQL_DESC_OCTET_LENGTH_PTR : case SQL_DESC_PARAMETER_TYPE : case SQL_DESC_PRECISION : case SQL_DESC_ROWVER : case SQL_DESC_SCALE : case SQL_DESC_SEARCHABLE : case SQL_DESC_TYPE : case SQL_DESC_UNNAMED : case SQL_DESC_UNSIGNED : case SQL_DESC_UPDATABLE : isStrField = 0 ; break ; case SQL_DESC_BASE_COLUMN_NAME : case SQL_DESC_BASE_TABLE_NAME : case SQL_DESC_CATALOG_NAME : case SQL_DESC_LABEL : case SQL_DESC_LITERAL_PREFIX : case SQL_DESC_LITERAL_SUFFIX : case SQL_DESC_LOCAL_TYPE_NAME : case SQL_DESC_NAME : case SQL_DESC_SCHEMA_NAME : case SQL_DESC_TABLE_NAME : case SQL_DESC_TYPE_NAME : isStrField = 1 ; break ; default : isStrField = buffer_length != SQL_IS_POINTER && buffer_length != SQL_IS_INTEGER && buffer_length != SQL_IS_UINTEGER && buffer_length != SQL_IS_SMALLINT && buffer_length != SQL_IS_USMALLINT ; } if ( isStrField && buffer_length < 0 && buffer_length != SQL_NTS ) { __post_internal_error ( & descriptor -> error , ERROR_HY090 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } <S2SV_StartBug> if ( field_identifier == SQL_DESC_COUNT && ( SQLINTEGER ) value < 0 ) <S2SV_EndBug> { __post_internal_error ( & descriptor -> error , ERROR_07009 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } <S2SV_StartBug> if ( field_identifier == SQL_DESC_PARAMETER_TYPE && value != SQL_PARAM_INPUT <S2SV_EndBug> <S2SV_StartBug> && value != SQL_PARAM_OUTPUT && value != SQL_PARAM_INPUT_OUTPUT && <S2SV_EndBug> <S2SV_StartBug> value != SQL_PARAM_INPUT_OUTPUT_STREAM && value != SQL_PARAM_OUTPUT_STREAM ) <S2SV_EndBug> { __post_internal_error ( & descriptor -> error , ERROR_HY105 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( CHECK_SQLSETDESCFIELD ( descriptor -> connection ) ) { ret = SQLSETDESCFIELD ( descriptor -> connection , descriptor -> driver_desc , rec_number , field_identifier , value , buffer_length ) ; } else if ( CHECK_SQLSETDESCFIELDW ( descriptor -> connection ) ) { SQLWCHAR * s1 = NULL ; if ( isStrField ) { s1 = ansi_to_unicode_alloc ( value , buffer_length , descriptor -> connection , NULL ) ; if ( SQL_NTS != buffer_length ) { buffer_length *= sizeof ( SQLWCHAR ) ; } } else { s1 = value ; } ret = SQLSETDESCFIELDW ( descriptor -> connection , descriptor -> driver_desc , rec_number , field_identifier , s1 , buffer_length ) ; if ( isStrField ) { if ( s1 ) free ( s1 ) ; } } else { dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , \"Error:<S2SV_blank>IM001\" ) ; __post_internal_error ( & descriptor -> error , ERROR_IM001 , NULL , descriptor -> connection -> environment -> requested_version ) ; return function_return_nodrv ( SQL_HANDLE_DESC , descriptor , SQL_ERROR ) ; } if ( log_info . log_flag ) { sprintf ( descriptor -> msg , \"\\\\n\\\\t\\\\tExit:[%s]\" , __get_return_status ( ret , s1 ) ) ; dm_log_write ( __FILE__ , __LINE__ , LOG_INFO , LOG_INFO , descriptor -> msg ) ; } return function_return ( SQL_HANDLE_DESC , descriptor , ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> msg , \"\\\\n\\\\t\\\\tEntry:\\\\\\n\\\\n\\\\t\\\\t\\\\tDescriptor<S2SV_blank>=<S2SV_blank>%p\\\\\\n\\\\n\\\\t\\\\t\\\\tRec<S2SV_blank>Number<S2SV_blank>=<S2SV_blank>%d\\\\\\n\\\\n\\\\t\\\\t\\\\tField<S2SV_blank>Ident<S2SV_blank>=<S2SV_blank>%s\\\\\\n\\\\n\\\\t\\\\t\\\\tValue<S2SV_blank>=<S2SV_blank>%p\\\\\\n\\\\n\\\\t\\\\t\\\\tBuffer<S2SV_blank>Length<S2SV_blank>=<S2SV_blank>%d\" <S2SV_ModEnd> , descriptor , <S2SV_ModStart> SQL_DESC_COUNT && ( intptr_t <S2SV_ModEnd> ) value < <S2SV_ModStart> == SQL_DESC_PARAMETER_TYPE && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_OUTPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT_OUTPUT && ( intptr_t ) <S2SV_ModStart> != SQL_PARAM_INPUT_OUTPUT_STREAM && ( intptr_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0349\n\n```\nCWE-200 static int hidp_setup_hid ( struct hidp_session * session , struct hidp_connadd_req * req ) { struct hid_device * hid ; int err ; session -> rd_data = kzalloc ( req -> rd_size , GFP_KERNEL ) ; if ( ! session -> rd_data ) return - ENOMEM ; if ( copy_from_user ( session -> rd_data , req -> rd_data , req -> rd_size ) ) { err = - EFAULT ; goto fault ; } session -> rd_size = req -> rd_size ; hid = hid_allocate_device ( ) ; if ( IS_ERR ( hid ) ) { err = PTR_ERR ( hid ) ; goto fault ; } session -> hid = hid ; hid -> driver_data = session ; hid -> bus = BUS_BLUETOOTH ; hid -> vendor = req -> vendor ; hid -> product = req -> product ; hid -> version = req -> version ; hid -> country = req -> country ; <S2SV_StartBug> strncpy ( hid -> name , req -> name , 128 ) ; <S2SV_EndBug> snprintf ( hid -> phys , sizeof ( hid -> phys ) , \"%pMR\" , & bt_sk ( session -> ctrl_sock -> sk ) -> src ) ; snprintf ( hid -> uniq , sizeof ( hid -> uniq ) , \"%pMR\" , & bt_sk ( session -> ctrl_sock -> sk ) -> dst ) ; hid -> dev . parent = & session -> conn -> dev ; hid -> ll_driver = & hidp_hid_driver ; hid -> hid_get_raw_report = hidp_get_raw_report ; hid -> hid_output_raw_report = hidp_output_raw_report ; if ( hid_ignore ( hid ) ) { hid_destroy_device ( session -> hid ) ; session -> hid = NULL ; return - ENODEV ; } return 0 ; fault : kfree ( session -> rd_data ) ; session -> rd_data = NULL ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> name , sizeof ( req -> name ) - 1 <S2SV_ModEnd> ) ; snprintf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static int ext4_get_block_write ( struct inode * inode , sector_t iblock , struct buffer_head * bh_result , int create ) { <S2SV_StartBug> handle_t * handle = NULL ; <S2SV_EndBug> int ret = 0 ; unsigned max_blocks = bh_result -> b_size >> inode -> i_blkbits ; int dio_credits ; <S2SV_StartBug> ext4_debug ( \"ext4_get_block_write:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>create<S2SV_blank>flag<S2SV_blank>%d\\\\n\" , <S2SV_EndBug> inode -> i_ino , create ) ; <S2SV_StartBug> create = EXT4_GET_BLOCKS_IO_CREATE_EXT ; <S2SV_EndBug> if ( max_blocks > DIO_MAX_BLOCKS ) max_blocks = DIO_MAX_BLOCKS ; dio_credits = ext4_chunk_trans_blocks ( inode , max_blocks ) ; handle = ext4_journal_start ( inode , dio_credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; goto out ; } <S2SV_StartBug> ret = ext4_get_blocks ( handle , inode , iblock , max_blocks , bh_result , <S2SV_EndBug> create ) ; if ( ret > 0 ) { bh_result -> b_size = ( ret << inode -> i_blkbits ) ; ret = 0 ; <S2SV_StartBug> } <S2SV_EndBug> ext4_journal_stop ( handle ) ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * handle = ext4_journal_current_handle ( ) <S2SV_ModEnd> ; int ret <S2SV_ModStart> int dio_credits ; int started = 0 ; <S2SV_ModStart> = EXT4_GET_BLOCKS_IO_CREATE_EXT ; if ( ! handle ) { <S2SV_ModStart> out ; } started = 1 ; } <S2SV_ModStart> 0 ; } if ( started )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9605\n\n```\nCWE-200 int vmw_gb_surface_define_ioctl ( struct drm_device * dev , void * data , struct drm_file * file_priv ) { struct vmw_private * dev_priv = vmw_priv ( dev ) ; struct vmw_user_surface * user_srf ; struct vmw_surface * srf ; struct vmw_resource * res ; struct vmw_resource * tmp ; union drm_vmw_gb_surface_create_arg * arg = ( union drm_vmw_gb_surface_create_arg * ) data ; struct drm_vmw_gb_surface_create_req * req = & arg -> req ; struct drm_vmw_gb_surface_create_rep * rep = & arg -> rep ; struct ttm_object_file * tfile = vmw_fpriv ( file_priv ) -> tfile ; int ret ; uint32_t size ; <S2SV_StartBug> uint32_t backup_handle ; <S2SV_EndBug> if ( req -> multisample_count != 0 ) return - EINVAL ; if ( req -> mip_levels > DRM_VMW_MAX_MIP_LEVELS ) return - EINVAL ; if ( unlikely ( vmw_user_surface_size == 0 ) ) vmw_user_surface_size = ttm_round_pot ( sizeof ( * user_srf ) ) + 128 ; size = vmw_user_surface_size + 128 ; ret = vmw_surface_gb_priv_define ( dev , size , req -> svga3d_flags , req -> format , req -> drm_surface_flags & drm_vmw_surface_flag_scanout , req -> mip_levels , req -> multisample_count , req -> array_size , req -> base_size , & srf ) ; if ( unlikely ( ret != 0 ) ) return ret ; user_srf = container_of ( srf , struct vmw_user_surface , srf ) ; if ( drm_is_primary_client ( file_priv ) ) user_srf -> master = drm_master_get ( file_priv -> master ) ; ret = ttm_read_lock ( & dev_priv -> reservation_sem , true ) ; if ( unlikely ( ret != 0 ) ) return ret ; res = & user_srf -> srf . res ; if ( req -> buffer_handle != SVGA3D_INVALID_ID ) { ret = vmw_user_dmabuf_lookup ( tfile , req -> buffer_handle , & res -> backup , & user_srf -> backup_base ) ; <S2SV_StartBug> if ( ret == 0 && res -> backup -> base . num_pages * PAGE_SIZE < <S2SV_EndBug> res -> backup_size ) { DRM_ERROR ( \"Surface<S2SV_blank>backup<S2SV_blank>buffer<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small.\\\\n\" ) ; vmw_dmabuf_unreference ( & res -> backup ) ; ret = - EINVAL ; <S2SV_StartBug> goto out_unlock ; <S2SV_EndBug> } } else if ( req -> drm_surface_flags & drm_vmw_surface_flag_create_buffer ) ret = vmw_user_dmabuf_alloc ( dev_priv , tfile , res -> backup_size , req -> drm_surface_flags & drm_vmw_surface_flag_shareable , & backup_handle , & res -> backup , & user_srf -> backup_base ) ; if ( unlikely ( ret != 0 ) ) { vmw_resource_unreference ( & res ) ; goto out_unlock ; } tmp = vmw_resource_reference ( res ) ; ret = ttm_prime_object_init ( tfile , res -> backup_size , & user_srf -> prime , req -> drm_surface_flags & drm_vmw_surface_flag_shareable , VMW_RES_SURFACE , & vmw_user_surface_base_release , NULL ) ; if ( unlikely ( ret != 0 ) ) { vmw_resource_unreference ( & tmp ) ; vmw_resource_unreference ( & res ) ; goto out_unlock ; } rep -> handle = user_srf -> prime . base . hash . key ; rep -> backup_size = res -> backup_size ; if ( res -> backup ) { rep -> buffer_map_handle = drm_vma_node_offset_addr ( & res -> backup -> base . vma_node ) ; rep -> buffer_size = res -> backup -> base . num_pages * PAGE_SIZE ; rep -> buffer_handle = backup_handle ; } else { rep -> buffer_map_handle = 0 ; rep -> buffer_size = 0 ; rep -> buffer_handle = SVGA3D_INVALID_ID ; } vmw_resource_unreference ( & res ) ; out_unlock : ttm_read_unlock ( & dev_priv -> reservation_sem ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint32_t backup_handle = 0 <S2SV_ModStart> ret == 0 ) { if ( <S2SV_ModEnd> res -> backup <S2SV_ModStart> goto out_unlock ; } else { backup_handle = req -> buffer_handle ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14225\n\n```\nCWE-476 static void show_frame ( WriterContext * w , AVFrame * frame , AVStream * stream , AVFormatContext * fmt_ctx ) { AVBPrint pbuf ; char val_str [ 128 ] ; const char * s ; int i ; av_bprint_init ( & pbuf , 1 , AV_BPRINT_SIZE_UNLIMITED ) ; writer_print_section_header ( w , SECTION_ID_FRAME ) ; s = av_get_media_type_string ( stream -> codecpar -> codec_type ) ; if ( s ) print_str ( \"media_type\" , s ) ; else print_str_opt ( \"media_type\" , \"unknown\" ) ; print_int ( \"stream_index\" , stream -> index ) ; print_int ( \"key_frame\" , frame -> key_frame ) ; print_ts ( \"pkt_pts\" , frame -> pts ) ; print_time ( \"pkt_pts_time\" , frame -> pts , & stream -> time_base ) ; print_ts ( \"pkt_dts\" , frame -> pkt_dts ) ; print_time ( \"pkt_dts_time\" , frame -> pkt_dts , & stream -> time_base ) ; print_ts ( \"best_effort_timestamp\" , frame -> best_effort_timestamp ) ; print_time ( \"best_effort_timestamp_time\" , frame -> best_effort_timestamp , & stream -> time_base ) ; print_duration_ts ( \"pkt_duration\" , frame -> pkt_duration ) ; print_duration_time ( \"pkt_duration_time\" , frame -> pkt_duration , & stream -> time_base ) ; if ( frame -> pkt_pos != - 1 ) print_fmt ( \"pkt_pos\" , \"%\" PRId64 , frame -> pkt_pos ) ; else print_str_opt ( \"pkt_pos\" , \"N/A\" ) ; if ( frame -> pkt_size != - 1 ) print_val ( \"pkt_size\" , frame -> pkt_size , unit_byte_str ) ; else print_str_opt ( \"pkt_size\" , \"N/A\" ) ; switch ( stream -> codecpar -> codec_type ) { AVRational sar ; case AVMEDIA_TYPE_VIDEO : print_int ( \"width\" , frame -> width ) ; print_int ( \"height\" , frame -> height ) ; s = av_get_pix_fmt_name ( frame -> format ) ; if ( s ) print_str ( \"pix_fmt\" , s ) ; else print_str_opt ( \"pix_fmt\" , \"unknown\" ) ; sar = av_guess_sample_aspect_ratio ( fmt_ctx , stream , frame ) ; if ( sar . num ) { print_q ( \"sample_aspect_ratio\" , sar , ':' ) ; } else { print_str_opt ( \"sample_aspect_ratio\" , \"N/A\" ) ; } print_fmt ( \"pict_type\" , \"%c\" , av_get_picture_type_char ( frame -> pict_type ) ) ; print_int ( \"coded_picture_number\" , frame -> coded_picture_number ) ; print_int ( \"display_picture_number\" , frame -> display_picture_number ) ; print_int ( \"interlaced_frame\" , frame -> interlaced_frame ) ; print_int ( \"top_field_first\" , frame -> top_field_first ) ; print_int ( \"repeat_pict\" , frame -> repeat_pict ) ; if ( frame -> color_range != AVCOL_RANGE_UNSPECIFIED ) print_str ( \"color_range\" , av_color_range_name ( frame -> color_range ) ) ; else print_str_opt ( \"color_range\" , av_color_range_name ( frame -> color_range ) ) ; if ( frame -> colorspace != AVCOL_SPC_UNSPECIFIED ) print_str ( \"color_space\" , av_color_space_name ( frame -> colorspace ) ) ; else print_str_opt ( \"color_space\" , av_color_space_name ( frame -> colorspace ) ) ; <S2SV_StartBug> if ( frame -> color_primaries != AVCOL_PRI_UNSPECIFIED ) <S2SV_EndBug> print_str ( \"color_primaries\" , av_color_primaries_name ( frame -> color_primaries ) ) ; else print_str_opt ( \"color_primaries\" , av_color_primaries_name ( frame -> color_primaries ) ) ; if ( frame -> color_trc != AVCOL_TRC_UNSPECIFIED ) print_str ( \"color_transfer\" , av_color_transfer_name ( frame -> color_trc ) ) ; else print_str_opt ( \"color_transfer\" , av_color_transfer_name ( frame -> color_trc ) ) ; if ( frame -> chroma_location != AVCHROMA_LOC_UNSPECIFIED ) print_str ( \"chroma_location\" , av_chroma_location_name ( frame -> chroma_location ) ) ; else print_str_opt ( \"chroma_location\" , av_chroma_location_name ( frame -> chroma_location ) ) ; break ; case AVMEDIA_TYPE_AUDIO : s = av_get_sample_fmt_name ( frame -> format ) ; if ( s ) print_str ( \"sample_fmt\" , s ) ; else print_str_opt ( \"sample_fmt\" , \"unknown\" ) ; print_int ( \"nb_samples\" , frame -> nb_samples ) ; print_int ( \"channels\" , frame -> channels ) ; if ( frame -> channel_layout ) { av_bprint_clear ( & pbuf ) ; av_bprint_channel_layout ( & pbuf , frame -> channels , frame -> channel_layout ) ; print_str ( \"channel_layout\" , pbuf . str ) ; } else print_str_opt ( \"channel_layout\" , \"unknown\" ) ; break ; } if ( do_show_frame_tags ) show_tags ( w , frame -> metadata , SECTION_ID_FRAME_TAGS ) ; if ( do_show_log ) show_log ( w , SECTION_ID_FRAME_LOGS , SECTION_ID_FRAME_LOG , do_show_log ) ; if ( frame -> nb_side_data ) { writer_print_section_header ( w , SECTION_ID_FRAME_SIDE_DATA_LIST ) ; for ( i = 0 ; i < frame -> nb_side_data ; i ++ ) { AVFrameSideData * sd = frame -> side_data [ i ] ; const char * name ; writer_print_section_header ( w , SECTION_ID_FRAME_SIDE_DATA ) ; name = av_frame_side_data_name ( sd -> type ) ; print_str ( \"side_data_type\" , name ? name : \"unknown\" ) ; if ( sd -> type == AV_FRAME_DATA_DISPLAYMATRIX && sd -> size >= 9 * 4 ) { writer_print_integers ( w , \"displaymatrix\" , sd -> data , 9 , \"<S2SV_blank>%11d\" , 3 , 4 , 1 ) ; print_int ( \"rotation\" , av_display_rotation_get ( ( int32_t * ) sd -> data ) ) ; } else if ( sd -> type == AV_FRAME_DATA_GOP_TIMECODE && sd -> size >= 8 ) { char tcbuf [ AV_TIMECODE_STR_SIZE ] ; av_timecode_make_mpeg_tc_string ( tcbuf , * ( int64_t * ) ( sd -> data ) ) ; print_str ( \"timecode\" , tcbuf ) ; } else if ( sd -> type == AV_FRAME_DATA_MASTERING_DISPLAY_METADATA ) { AVMasteringDisplayMetadata * metadata = ( AVMasteringDisplayMetadata * ) sd -> data ; if ( metadata -> has_primaries ) { print_q ( \"red_x\" , metadata -> display_primaries [ 0 ] [ 0 ] , '/' ) ; print_q ( \"red_y\" , metadata -> display_primaries [ 0 ] [ 1 ] , '/' ) ; print_q ( \"green_x\" , metadata -> display_primaries [ 1 ] [ 0 ] , '/' ) ; print_q ( \"green_y\" , metadata -> display_primaries [ 1 ] [ 1 ] , '/' ) ; print_q ( \"blue_x\" , metadata -> display_primaries [ 2 ] [ 0 ] , '/' ) ; print_q ( \"blue_y\" , metadata -> display_primaries [ 2 ] [ 1 ] , '/' ) ; print_q ( \"white_point_x\" , metadata -> white_point [ 0 ] , '/' ) ; print_q ( \"white_point_y\" , metadata -> white_point [ 1 ] , '/' ) ; } if ( metadata -> has_luminance ) { print_q ( \"min_luminance\" , metadata -> min_luminance , '/' ) ; print_q ( \"max_luminance\" , metadata -> max_luminance , '/' ) ; } } else if ( sd -> type == AV_FRAME_DATA_CONTENT_LIGHT_LEVEL ) { AVContentLightMetadata * metadata = ( AVContentLightMetadata * ) sd -> data ; print_int ( \"max_content\" , metadata -> MaxCLL ) ; print_int ( \"max_average\" , metadata -> MaxFALL ) ; } else if ( sd -> type == AV_FRAME_DATA_ICC_PROFILE ) { AVDictionaryEntry * tag = av_dict_get ( sd -> metadata , \"name\" , NULL , AV_DICT_MATCH_CASE ) ; if ( tag ) print_str ( tag -> key , tag -> value ) ; print_int ( \"size\" , sd -> size ) ; } writer_print_section_footer ( w ) ; } writer_print_section_footer ( w ) ; } writer_print_section_footer ( w ) ; av_bprint_finalize ( & pbuf , NULL ) ; fflush ( stdout ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; print_primaries ( w , <S2SV_ModEnd> frame -> color_primaries <S2SV_ModStart> frame -> color_primaries <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-24753\n\n```\nCWE-20 static int cbor2json ( OSCTXT * pCborCtxt , OSCTXT * pJsonCtxt ) { int ret = 0 ; OSOCTET tag , ub ; ret = rtxReadBytes ( pCborCtxt , & ub , 1 ) ; if ( 0 != ret ) return LOG_RTERR ( pCborCtxt , ret ) ; tag = ub >> 5 ; switch ( tag ) { case OSRTCBOR_UINT : { OSUINTTYPE value ; ret = rtCborDecUInt ( pCborCtxt , ub , & value ) ; if ( 0 != ret ) return LOG_RTERR ( pCborCtxt , ret ) ; # ifndef _NO_INT64_SUPPORT ret = rtJsonEncUInt64Value ( pJsonCtxt , value ) ; # else ret = rtJsonEncUIntValue ( pJsonCtxt , value ) ; # endif if ( 0 != ret ) return LOG_RTERR ( pJsonCtxt , ret ) ; break ; } case OSRTCBOR_NEGINT : { OSINTTYPE value ; ret = rtCborDecInt ( pCborCtxt , ub , & value ) ; if ( 0 != ret ) return LOG_RTERR ( pCborCtxt , ret ) ; # ifndef _NO_INT64_SUPPORT ret = rtJsonEncInt64Value ( pJsonCtxt , value ) ; # else ret = rtJsonEncIntValue ( pJsonCtxt , value ) ; # endif if ( 0 != ret ) return LOG_RTERR ( pJsonCtxt , ret ) ; break ; } case OSRTCBOR_BYTESTR : { OSDynOctStr64 byteStr ; ret = rtCborDecDynByteStr ( pCborCtxt , ub , & byteStr ) ; if ( 0 != ret ) return LOG_RTERR ( pCborCtxt , ret ) ; ret = rtJsonEncHexStr ( pJsonCtxt , byteStr . numocts , byteStr . data ) ; rtxMemFreePtr ( pCborCtxt , byteStr . data ) ; if ( 0 != ret ) return LOG_RTERR ( pJsonCtxt , ret ) ; break ; } case OSRTCBOR_UTF8STR : { OSUTF8CHAR * utf8str ; <S2SV_StartBug> ret = rtCborDecDynUTF8Str ( pCborCtxt , ub , ( char * * ) & utf8str ) ; <S2SV_EndBug> ret = rtJsonEncStringValue ( pJsonCtxt , utf8str ) ; rtxMemFreePtr ( pCborCtxt , utf8str ) ; if ( 0 != ret ) return LOG_RTERR ( pJsonCtxt , ret ) ; break ; } case OSRTCBOR_ARRAY : case OSRTCBOR_MAP : { OSOCTET len = ub & 0x1F ; char startChar = ( tag == OSRTCBOR_ARRAY ) ? '[' : '{' ; char endChar = ( tag == OSRTCBOR_ARRAY ) ? ']' : '}' ; OSRTSAFEPUTCHAR ( pJsonCtxt , startChar ) ; if ( len == OSRTCBOR_INDEF ) { OSBOOL first = TRUE ; for ( ; ; ) { if ( OSRTCBOR_MATCHEOC ( pCborCtxt ) ) { pCborCtxt -> buffer . byteIndex ++ ; break ; } if ( ! first ) OSRTSAFEPUTCHAR ( pJsonCtxt , ',' ) ; else first = FALSE ; if ( tag == OSRTCBOR_MAP ) { ret = cborElemNameToJson ( pCborCtxt , pJsonCtxt ) ; } if ( 0 == ret ) ret = cbor2json ( pCborCtxt , pJsonCtxt ) ; if ( 0 != ret ) { OSCTXT * pctxt = ( rtxErrGetErrorCnt ( pJsonCtxt ) > 0 ) ? pJsonCtxt : pCborCtxt ; return LOG_RTERR ( pctxt , ret ) ; } } } else { OSSIZE nitems ; ret = rtCborDecSize ( pCborCtxt , len , & nitems ) ; if ( 0 == ret ) { OSSIZE i ; for ( i = 0 ; i < nitems ; i ++ ) { if ( 0 != i ) OSRTSAFEPUTCHAR ( pJsonCtxt , ',' ) ; if ( tag == OSRTCBOR_MAP ) { ret = cborElemNameToJson ( pCborCtxt , pJsonCtxt ) ; } if ( 0 == ret ) ret = cbor2json ( pCborCtxt , pJsonCtxt ) ; if ( 0 != ret ) { OSCTXT * pctxt = ( rtxErrGetErrorCnt ( pJsonCtxt ) > 0 ) ? pJsonCtxt : pCborCtxt ; return LOG_RTERR ( pctxt , ret ) ; } } } } OSRTSAFEPUTCHAR ( pJsonCtxt , endChar ) ; break ; } case OSRTCBOR_FLOAT : if ( tag == OSRTCBOR_FALSEENC || tag == OSRTCBOR_TRUEENC ) { OSBOOL boolval = ( ub == OSRTCBOR_TRUEENC ) ? TRUE : FALSE ; ret = rtJsonEncBoolValue ( pJsonCtxt , boolval ) ; if ( 0 != ret ) return LOG_RTERR ( pJsonCtxt , ret ) ; } else if ( tag == OSRTCBOR_FLT16ENC || tag == OSRTCBOR_FLT32ENC || tag == OSRTCBOR_FLT64ENC ) { OSDOUBLE fltval ; ret = rtCborDecFloat ( pCborCtxt , ub , & fltval ) ; if ( 0 != ret ) return LOG_RTERR ( pCborCtxt , ret ) ; ret = rtJsonEncDoubleValue ( pJsonCtxt , fltval , 0 ) ; if ( 0 != ret ) return LOG_RTERR ( pJsonCtxt , ret ) ; } else { ret = cborTagNotSupp ( pCborCtxt , tag ) ; } break ; default : ret = cborTagNotSupp ( pCborCtxt , tag ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) & utf8str ) ; if ( 0 != ret ) return LOG_RTERR ( pCborCtxt , ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3878\n\n```\nCWE-284 WORD32 ih264d_video_decode ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ( dec_hdl -> pv_codec_handle ) ; WORD32 i4_err_status = 0 ; UWORD8 * pu1_buf = NULL ; WORD32 buflen ; UWORD32 u4_max_ofst , u4_length_of_start_code = 0 ; UWORD32 bytes_consumed = 0 ; UWORD32 cur_slice_is_nonref = 0 ; UWORD32 u4_next_is_aud ; UWORD32 u4_first_start_code_found = 0 ; WORD32 ret = 0 , api_ret_value = IV_SUCCESS ; WORD32 header_data_left = 0 , frame_data_left = 0 ; UWORD8 * pu1_bitstrm_buf ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; ithread_set_name ( ( void * ) \"Parse_thread\" ) ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size ; u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } ps_dec -> pv_dec_out = ps_dec_op ; if ( ps_dec -> init_done != 1 ) { return IV_FAIL ; } DATA_SYNC ( ) ; if ( 0 == ps_dec -> u1_flushfrm ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } ps_dec -> u1_pic_decode_done = 0 ; ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec -> ps_out_buffer = NULL ; if ( ps_dec_ip -> u4_size >= offsetof ( ivd_video_decode_ip_t , s_out_buffer ) ) ps_dec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 0 ; ps_dec -> s_disp_op . u4_error_code = 1 ; ps_dec -> u4_fmt_conv_num_rows = FMT_CONV_NUM_ROWS ; if ( 0 == ps_dec -> u4_share_disp_buf && ps_dec -> i4_decode_header == 0 ) { UWORD32 i ; if ( ps_dec -> ps_out_buffer -> u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec -> ps_out_buffer -> u4_num_bufs ; i ++ ) { if ( ps_dec -> ps_out_buffer -> pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec -> ps_out_buffer -> u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } if ( ps_dec -> u4_total_frames_decoded >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code = ERROR_FRAME_LIMIT_OVER ; return IV_FAIL ; } ps_dec -> u4_ts = ps_dec_ip -> u4_ts ; ps_dec_op -> u4_error_code = 0 ; ps_dec_op -> e_pic_type = - 1 ; ps_dec_op -> u4_output_present = 0 ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; { if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } } ps_dec -> u4_slice_start_code_found = 0 ; if ( ps_dec -> u1_init_dec_flag == 1 && ps_dec -> u4_share_disp_buf == 1 && ps_dec -> u1_flushfrm == 0 ) { UWORD32 i ; WORD32 disp_avail = 0 , free_id ; for ( i = 0 ; i < ps_dec -> u1_pic_bufs ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_mapping [ i ] || 1 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) { disp_avail = 1 ; break ; } } if ( 0 == disp_avail ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } while ( 1 ) { pic_buffer_t * ps_pic_buf ; ps_pic_buf = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & free_id ) ; if ( ps_pic_buf == NULL ) { UWORD32 i , display_queued = 0 ; for ( i = 0 ; i < ( MAX_DISP_BUFS_NEW ) ; i ++ ) { if ( 0 != ps_dec -> u4_disp_buf_mapping [ i ] ) { display_queued = 1 ; break ; } } if ( 1 == display_queued ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } } else { if ( 1 == ps_dec -> u4_disp_buf_mapping [ free_id ] ) { ih264_buf_mgr_set_status ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; } else { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; break ; } } } } if ( ps_dec -> u1_flushfrm && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; ps_dec -> u4_output_present = 1 ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; ps_dec_op -> u4_new_seq = 0 ; ps_dec_op -> u4_output_present = ps_dec -> u4_output_present ; ps_dec_op -> u4_progressive_frame_flag = ps_dec -> s_disp_op . u4_progressive_frame_flag ; ps_dec_op -> e_output_format = ps_dec -> s_disp_op . e_output_format ; ps_dec_op -> s_disp_frm_buf = ps_dec -> s_disp_op . s_disp_frm_buf ; ps_dec_op -> e4_fld_type = ps_dec -> s_disp_op . e4_fld_type ; ps_dec_op -> u4_ts = ps_dec -> s_disp_op . u4_ts ; ps_dec_op -> u4_disp_buf_id = ps_dec -> s_disp_op . u4_disp_buf_id ; ps_dec_op -> u4_is_ref_flag = - 1 ; ps_dec_op -> e_pic_type = IV_NA_FRAME ; ps_dec_op -> u4_frame_decoded_flag = 0 ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { return ( IV_SUCCESS ) ; } else return ( IV_FAIL ) ; } if ( ps_dec -> u1_res_changed == 1 ) { ih264d_init_decoder ( ps_dec ) ; } ps_dec -> u4_prev_nal_skipped = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> cur_dec_mb_num = 0 ; ps_dec -> cur_recon_mb_num = 0 ; ps_dec -> u4_first_slice_in_pic = 2 ; ps_dec -> u1_first_pb_nal_in_pic = 1 ; ps_dec -> u1_slice_header_done = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> u4_dec_thread_created = 0 ; ps_dec -> u4_bs_deblk_thread_created = 0 ; ps_dec -> u4_cur_bs_mb_num = 0 ; ps_dec -> u4_start_recon_deblk = 0 ; DEBUG_THREADS_PRINTF ( \"<S2SV_blank>Starting<S2SV_blank>process<S2SV_blank>call\\\\n\" ) ; ps_dec -> u4_pic_buf_got = 0 ; do { WORD32 buf_size ; pu1_buf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer + ps_dec_op -> u4_num_bytes_consumed ; u4_max_ofst = ps_dec_ip -> u4_num_Bytes - ps_dec_op -> u4_num_bytes_consumed ; if ( ( NULL == ps_dec -> pu1_bits_buf_dynamic ) && ( ps_dec -> i4_header_decoded & 1 ) ) { WORD32 size ; void * pv_buf ; void * pv_mem_ctxt = ps_dec -> pv_mem_ctxt ; size = MAX ( 256000 , ps_dec -> u2_pic_wd * ps_dec -> u2_pic_ht * 3 / 2 ) ; pv_buf = ps_dec -> pf_aligned_alloc ( pv_mem_ctxt , 128 , size ) ; RETURN_IF ( ( NULL == pv_buf ) , IV_FAIL ) ; ps_dec -> pu1_bits_buf_dynamic = pv_buf ; ps_dec -> u4_dynamic_bits_buf_size = size ; } if ( ps_dec -> pu1_bits_buf_dynamic ) { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_dynamic ; buf_size = ps_dec -> u4_dynamic_bits_buf_size ; } else { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_static ; buf_size = ps_dec -> u4_static_bits_buf_size ; } u4_next_is_aud = 0 ; buflen = ih264d_find_start_code ( pu1_buf , 0 , u4_max_ofst , & u4_length_of_start_code , & u4_next_is_aud ) ; if ( buflen == - 1 ) buflen = 0 ; buflen = MIN ( buflen , buf_size ) ; bytes_consumed = buflen + u4_length_of_start_code ; ps_dec_op -> u4_num_bytes_consumed += bytes_consumed ; { UWORD8 u1_firstbyte , u1_nal_ref_idc ; if ( ps_dec -> i4_app_skip_mode == IVD_SKIP_B ) { u1_firstbyte = * ( pu1_buf + u4_length_of_start_code ) ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_firstbyte ) ) ; if ( u1_nal_ref_idc == 0 ) { cur_slice_is_nonref = 1 ; continue ; } else { if ( 1 == cur_slice_is_nonref ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> e_pic_type = IV_B_FRAME ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } } } } if ( buflen ) { memcpy ( pu1_bitstrm_buf , pu1_buf + u4_length_of_start_code , buflen ) ; if ( ( buflen + 8 ) < buf_size ) { memset ( pu1_bitstrm_buf + buflen , 0 , 8 ) ; } u4_first_start_code_found = 1 ; } else { if ( u4_first_start_code_found == 0 ) { ps_dec -> i4_error_code = ERROR_START_CODE_NOT_FOUND ; ps_dec_op -> u4_error_code |= 1 << IVD_INSUFFICIENTDATA ; if ( ps_dec -> u4_pic_buf_got == 0 ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; ps_dec_op -> u4_error_code = ps_dec -> i4_error_code ; ps_dec_op -> u4_frame_decoded_flag = 0 ; return ( IV_FAIL ) ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } else { frame_data_left = 0 ; continue ; } } ps_dec -> u4_return_to_app = 0 ; ret = ih264d_parse_nal_unit ( dec_hdl , ps_dec_op , pu1_bitstrm_buf , buflen ) ; if ( ret != OK ) { UWORD32 error = ih264d_map_error ( ret ) ; ps_dec_op -> u4_error_code = error | ret ; api_ret_value = IV_FAIL ; if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ps_dec -> u4_slice_start_code_found = 0 ; break ; } if ( ( ret == ERROR_INCOMPLETE_FRAME ) || ( ret == ERROR_DANGLING_FIELD_IN_PIC ) ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; api_ret_value = IV_FAIL ; break ; } if ( ret == ERROR_IN_LAST_SLICE_OF_PIC ) { api_ret_value = IV_FAIL ; break ; } } if ( ps_dec -> u4_return_to_app ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } header_data_left = ( ( ps_dec -> i4_decode_header == 1 ) && ( ps_dec -> i4_header_decoded != 3 ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; frame_data_left = ( ( ( ps_dec -> i4_decode_header == 0 ) && ( ( ps_dec -> u1_pic_decode_done == 0 ) || ( u4_next_is_aud == 1 ) ) ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; } while ( ( header_data_left == 1 ) || ( frame_data_left == 1 ) ) ; if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ret != IVD_MEM_ALLOC_FAILED ) && ps_dec -> u2_total_mbs_coded < ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { WORD32 num_mb_skipped ; WORD32 prev_slice_err ; pocstruct_t temp_poc ; WORD32 ret1 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u4_pic_buf_got == 0 ) ) prev_slice_err = 1 ; else prev_slice_err = 2 ; <S2SV_StartBug> ret1 = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL , ps_dec -> ps_cur_slice -> u2_frame_num , <S2SV_EndBug> & temp_poc , prev_slice_err ) ; if ( ( ret1 == ERROR_UNAVAIL_PICBUF_T ) || ( ret1 == ERROR_UNAVAIL_MVBUF_T ) ) { return IV_FAIL ; } } if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } if ( ret == IVD_RES_CHANGED ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; } return IV_FAIL ; } if ( ps_dec -> u1_separate_parse ) { if ( ps_dec -> u4_num_cores == 2 ) { if ( ( ps_dec -> u4_nmb_deblk == 0 ) && ( ps_dec -> u4_start_recon_deblk == 1 ) && ( ps_dec -> ps_cur_sps -> u1_mb_aff_flag == 0 ) ) { UWORD32 u4_num_mbs , u4_max_addr ; tfr_ctxt_t s_tfr_ctxt ; tfr_ctxt_t * ps_tfr_cxt = & s_tfr_ctxt ; pad_mgr_t * ps_pad_mgr = & ps_dec -> s_pad_mgr ; u4_max_addr = ( ps_dec -> u2_frm_wd_in_mbs * ps_dec -> u2_frm_ht_in_mbs ) - 1 ; ps_dec -> u4_cur_bs_mb_num = u4_max_addr + 1 ; ih264d_init_deblk_tfr_ctxt ( ps_dec , ps_pad_mgr , ps_tfr_cxt , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; u4_num_mbs = u4_max_addr - ps_dec -> u4_cur_deblk_mb_num + 1 ; DEBUG_PERF_PRINTF ( \"mbs<S2SV_blank>left<S2SV_blank>for<S2SV_blank>deblocking=<S2SV_blank>%d<S2SV_blank>\\\\n\" , u4_num_mbs ) ; if ( u4_num_mbs != 0 ) ih264d_check_mb_map_deblk ( ps_dec , u4_num_mbs , ps_tfr_cxt , 1 ) ; ps_dec -> u4_start_recon_deblk = 0 ; } } ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } } DATA_SYNC ( ) ; if ( ( ps_dec_op -> u4_error_code & 0xff ) != ERROR_DYNAMIC_RESOLUTION_NOT_SUPPORTED ) { ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; } if ( ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> i4_decode_header == 1 && ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> u4_prev_nal_skipped ) { ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ERROR_DANGLING_FIELD_IN_PIC != i4_err_status ) ) { if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) { if ( 1 == ps_dec -> ps_cur_slice -> u1_bottom_field_flag ) { ps_dec -> u1_top_bottom_decoded |= BOT_FIELD_ONLY ; } else { ps_dec -> u1_top_bottom_decoded |= TOP_FIELD_ONLY ; } } if ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) { ret = ih264d_deblock_display ( ps_dec ) ; if ( ret != 0 ) { return IV_FAIL ; } } if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_dec -> i4_frametype = IV_IDR_FRAME ; } else if ( ps_dec -> i4_pic_type == B_SLICE ) { ps_dec -> i4_frametype = IV_B_FRAME ; } else if ( ps_dec -> i4_pic_type == P_SLICE ) { ps_dec -> i4_frametype = IV_P_FRAME ; } else if ( ps_dec -> i4_pic_type == I_SLICE ) { ps_dec -> i4_frametype = IV_I_FRAME ; } else { H264_DEC_DEBUG_PRINT ( \"Shouldn\\'t<S2SV_blank>come<S2SV_blank>here\\\\n\" ) ; } ps_dec -> i4_content_type = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded + 2 ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded - ps_dec -> ps_cur_slice -> u1_field_pic_flag ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } { if ( ( IVD_DECODE_FRAME_OUT == ps_dec -> e_frm_out_mode ) && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 1 ; } } ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; if ( ps_dec -> u4_output_present && ( ps_dec -> u4_fmt_conv_cur_row < ps_dec -> s_disp_frame_info . u4_y_ht ) ) { ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht - ps_dec -> u4_fmt_conv_cur_row ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; } if ( ps_dec -> i4_decode_header == 1 && ( ps_dec -> i4_header_decoded & 1 ) == 1 ) { ps_dec_op -> u4_progressive_frame_flag = 1 ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { if ( ( 0 == ps_dec -> ps_sps -> u1_frame_mbs_only_flag ) && ( 0 == ps_dec -> ps_sps -> u1_mb_aff_flag ) ) ps_dec_op -> u4_progressive_frame_flag = 0 ; } } DATA_SYNC ( ) ; H264_DEC_DEBUG_PRINT ( \"The<S2SV_blank>num<S2SV_blank>bytes<S2SV_blank>consumed:<S2SV_blank>%d\\\\n\" , ps_dec_op -> u4_num_bytes_consumed ) ; return api_ret_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 2 ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u2_total_mbs_coded == 0 ) ) prev_slice_err = 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13687\n\n```\nCWE-125 u_int chdlc_print ( netdissect_options * ndo , register const u_char * p , u_int length ) { u_int proto ; <S2SV_StartBug> proto = EXTRACT_16BITS ( & p [ 2 ] ) ; <S2SV_EndBug> if ( ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"%s,<S2SV_blank>ethertype<S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>length<S2SV_blank>%u:<S2SV_blank>\" , tok2str ( chdlc_cast_values , \"0x%02x\" , p [ 0 ] ) , tok2str ( ethertype_values , \"Unknown\" , proto ) , proto , length ) ) ; } length -= CHDLC_HDRLEN ; p += CHDLC_HDRLEN ; switch ( proto ) { case ETHERTYPE_IP : ip_print ( ndo , p , length ) ; break ; case ETHERTYPE_IPV6 : ip6_print ( ndo , p , length ) ; break ; case CHDLC_TYPE_SLARP : chdlc_slarp_print ( ndo , p , length ) ; break ; # if 0 case CHDLC_TYPE_CDP : chdlc_cdp_print ( p , length ) ; break ; # endif case ETHERTYPE_MPLS : case ETHERTYPE_MPLS_MULTI : mpls_print ( ndo , p , length ) ; break ; case ETHERTYPE_ISO : <S2SV_StartBug> if ( * ( p + 1 ) == 0x81 || <S2SV_EndBug> * ( p + 1 ) == 0x82 || * ( p + 1 ) == 0x83 ) isoclns_print ( ndo , p + 1 , length - 1 , ndo -> ndo_snapend - p - 1 ) ; else isoclns_print ( ndo , p , length , ndo -> ndo_snapend - p ) ; break ; default : if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"unknown<S2SV_blank>CHDLC<S2SV_blank>protocol<S2SV_blank>(0x%04x)\" , proto ) ) ; break ; } return ( CHDLC_HDRLEN ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_int proto ; const u_char * bp = p ; if ( length < CHDLC_HDRLEN ) goto trunc ; ND_TCHECK2 ( * p , CHDLC_HDRLEN ) ; <S2SV_ModStart> : if ( length < 2 ) goto trunc ; ND_TCHECK_16BITS ( p ) ; if ( <S2SV_ModStart> CHDLC_HDRLEN ) ; trunc : ND_PRINT ( ( ndo , \"[|chdlc]\" ) ) ; return ndo -> ndo_snapend - bp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11383\n\n```\nCWE-416 static void cmd_anal_esil ( RCore * core , const char * input ) { RAnalEsil * esil = core -> anal -> esil ; ut64 addr = core -> offset ; ut64 adr ; char * n , * n1 ; int off ; int stacksize = r_config_get_i ( core -> config , \"esil.stack.depth\" ) ; int iotrap = r_config_get_i ( core -> config , \"esil.iotrap\" ) ; int romem = r_config_get_i ( core -> config , \"esil.romem\" ) ; int stats = r_config_get_i ( core -> config , \"esil.stats\" ) ; int noNULL = r_config_get_i ( core -> config , \"esil.noNULL\" ) ; ut64 until_addr = UT64_MAX ; unsigned int addrsize = r_config_get_i ( core -> config , \"esil.addr.size\" ) ; const char * until_expr = NULL ; RAnalOp * op ; switch ( input [ 0 ] ) { case 'p' : switch ( input [ 1 ] ) { case 'c' : if ( input [ 2 ] == '<S2SV_blank>' ) { r_core_cmdf ( core , \"ar<S2SV_blank>PC=%s\" , input + 3 ) ; r_core_cmd0 ( core , \".ar*\" ) ; } else { eprintf ( \"Missing<S2SV_blank>argument\\\\n\" ) ; } break ; case 0 : r_anal_pin_list ( core -> anal ) ; break ; case '-' : if ( input [ 2 ] ) addr = r_num_math ( core -> num , input + 2 ) ; r_anal_pin_unset ( core -> anal , addr ) ; break ; case '<S2SV_blank>' : r_anal_pin ( core -> anal , addr , input + 2 ) ; break ; default : r_core_cmd_help ( core , help_msg_aep ) ; break ; } break ; case 'r' : cmd_anal_reg ( core , input + 1 ) ; break ; case '*' : if ( core -> anal -> esil ) { r_cons_printf ( \"trap:<S2SV_blank>%d\\\\n\" , core -> anal -> esil -> trap ) ; r_cons_printf ( \"trap-code:<S2SV_blank>%d\\\\n\" , core -> anal -> esil -> trap_code ) ; } else { eprintf ( \"esil<S2SV_blank>vm<S2SV_blank>not<S2SV_blank>initialized.<S2SV_blank>run<S2SV_blank>`aei`\\\\n\" ) ; } break ; case '<S2SV_blank>' : if ( ! esil ) { if ( ! ( core -> anal -> esil = esil = r_anal_esil_new ( stacksize , iotrap , addrsize ) ) ) return ; } r_anal_esil_setup ( esil , core -> anal , romem , stats , noNULL ) ; r_anal_esil_set_pc ( esil , core -> offset ) ; r_anal_esil_parse ( esil , input + 1 ) ; r_anal_esil_dumpstack ( esil ) ; r_anal_esil_stack_free ( esil ) ; break ; case 's' : switch ( input [ 1 ] ) { case '?' : eprintf ( \"See:<S2SV_blank>ae?~aes\\\\n\" ) ; break ; case 'l' : { ut64 pc = r_debug_reg_get ( core -> dbg , \"PC\" ) ; RAnalOp * op = r_core_anal_op ( core , pc ) ; if ( ! op ) { break ; } r_core_esil_step ( core , UT64_MAX , NULL , NULL ) ; r_debug_reg_set ( core -> dbg , \"PC\" , pc + op -> size ) ; r_anal_esil_set_pc ( esil , pc + op -> size ) ; r_core_cmd0 ( core , \".ar*\" ) ; } break ; case 'b' : if ( ! r_core_esil_step_back ( core ) ) { eprintf ( \"cannnot<S2SV_blank>step<S2SV_blank>back\\\\n\" ) ; } r_core_cmd0 ( core , \".ar*\" ) ; break ; case 'u' : if ( input [ 2 ] == 'e' ) { until_expr = input + 3 ; } else { until_addr = r_num_math ( core -> num , input + 2 ) ; } r_core_esil_step ( core , until_addr , until_expr , NULL ) ; r_core_cmd0 ( core , \".ar*\" ) ; break ; case 'o' : op = r_core_anal_op ( core , r_reg_getv ( core -> anal -> reg , r_reg_get_name ( core -> anal -> reg , R_REG_NAME_PC ) ) ) ; if ( op && op -> type == R_ANAL_OP_TYPE_CALL ) { until_addr = op -> addr + op -> size ; } r_core_esil_step ( core , until_addr , until_expr , NULL ) ; r_anal_op_free ( op ) ; r_core_cmd0 ( core , \".ar*\" ) ; break ; case 'p' : n = strchr ( input , '<S2SV_blank>' ) ; n1 = n ? strchr ( n + 1 , '<S2SV_blank>' ) : NULL ; if ( ( ! n || ! n1 ) || ( ! ( n + 1 ) || ! ( n1 + 1 ) ) ) { eprintf ( \"aesp<S2SV_blank>[offset]<S2SV_blank>[num]\\\\n\" ) ; break ; } adr = r_num_math ( core -> num , n + 1 ) ; off = r_num_math ( core -> num , n1 + 1 ) ; cmd_aespc ( core , adr , off ) ; break ; case '<S2SV_blank>' : n = strchr ( input , '<S2SV_blank>' ) ; if ( ! ( n + 1 ) ) { r_core_esil_step ( core , until_addr , until_expr , NULL ) ; break ; } off = r_num_math ( core -> num , n + 1 ) ; cmd_aespc ( core , - 1 , off ) ; break ; default : r_core_esil_step ( core , until_addr , until_expr , NULL ) ; r_core_cmd0 ( core , \".ar*\" ) ; break ; } break ; case 'c' : if ( input [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_aec ) ; } else if ( input [ 1 ] == 's' ) { const char * pc = r_reg_get_name ( core -> anal -> reg , R_REG_NAME_PC ) ; ut64 newaddr ; int ret ; for ( ; ; ) { op = r_core_anal_op ( core , addr ) ; if ( ! op ) { break ; } if ( op -> type == R_ANAL_OP_TYPE_SWI ) { eprintf ( \"syscall<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , addr ) ; break ; } if ( op -> type == R_ANAL_OP_TYPE_TRAP ) { eprintf ( \"trap<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , addr ) ; break ; } ret = r_core_esil_step ( core , UT64_MAX , NULL , NULL ) ; r_anal_op_free ( op ) ; op = NULL ; if ( core -> anal -> esil -> trap || core -> anal -> esil -> trap_code ) { break ; } if ( ! ret ) break ; r_core_cmd0 ( core , \".ar*\" ) ; newaddr = r_num_get ( core -> num , pc ) ; if ( addr == newaddr ) { addr ++ ; break ; } else { addr = newaddr ; } } if ( op ) { r_anal_op_free ( op ) ; } } else { if ( input [ 1 ] == 'u' && input [ 2 ] == 'e' ) until_expr = input + 3 ; else if ( input [ 1 ] == 'u' ) until_addr = r_num_math ( core -> num , input + 2 ) ; else until_expr = \"0\" ; r_core_esil_step ( core , until_addr , until_expr , NULL ) ; r_core_cmd0 ( core , \".ar*\" ) ; } break ; case 'i' : switch ( input [ 1 ] ) { case 's' : case 'm' : cmd_esil_mem ( core , input + 2 ) ; break ; case 'p' : r_core_cmd0 ( core , \"ar<S2SV_blank>PC=$$\" ) ; break ; case '?' : cmd_esil_mem ( core , \"?\" ) ; break ; case '-' : if ( esil ) { sdb_reset ( esil -> stats ) ; } r_anal_esil_free ( esil ) ; core -> anal -> esil = NULL ; break ; case 0 : r_anal_esil_free ( esil ) ; { const char * pc = r_reg_get_name ( core -> anal -> reg , R_REG_NAME_PC ) ; if ( r_reg_getv ( core -> anal -> reg , pc ) == 0LL ) { r_core_cmd0 ( core , \"ar<S2SV_blank>PC=$$\" ) ; } } if ( ! ( esil = core -> anal -> esil = r_anal_esil_new ( stacksize , iotrap , addrsize ) ) ) { return ; } r_anal_esil_setup ( esil , core -> anal , romem , stats , noNULL ) ; esil -> verbose = ( int ) r_config_get_i ( core -> config , \"esil.verbose\" ) ; { const char * s = r_config_get ( core -> config , \"cmd.esil.intr\" ) ; if ( s ) { char * my = strdup ( s ) ; if ( my ) { r_config_set ( core -> config , \"cmd.esil.intr\" , my ) ; free ( my ) ; } } } break ; } break ; case 'k' : switch ( input [ 1 ] ) { case '\\\\0' : input = \"123*\" ; case '<S2SV_blank>' : if ( esil && esil -> stats ) { char * out = sdb_querys ( esil -> stats , NULL , 0 , input + 2 ) ; if ( out ) { r_cons_println ( out ) ; free ( out ) ; } } else { eprintf ( \"esil.stats<S2SV_blank>is<S2SV_blank>empty.<S2SV_blank>Run<S2SV_blank>\\'aei\\'\\\\n\" ) ; } break ; case '-' : if ( esil ) { sdb_reset ( esil -> stats ) ; } break ; } break ; case 'f' : { RListIter * iter ; RAnalBlock * bb ; RAnalFunction * fcn = r_anal_get_fcn_in ( core -> anal , core -> offset , R_ANAL_FCN_TYPE_FCN | R_ANAL_FCN_TYPE_SYM ) ; if ( fcn ) { r_list_foreach ( fcn -> bbs , iter , bb ) { ut64 pc = bb -> addr ; ut64 end = bb -> addr + bb -> size ; RAnalOp op ; ut8 * buf ; int ret , bbs = end - pc ; if ( bbs < 1 || bbs > 0xfffff ) { eprintf ( \"Invalid<S2SV_blank>block<S2SV_blank>size\\\\n\" ) ; } buf = calloc ( 1 , bbs + 1 ) ; r_io_read_at ( core -> io , pc , buf , bbs ) ; int left ; while ( pc < end ) { left = R_MIN ( end - pc , 32 ) ; r_asm_set_pc ( core -> assembler , pc ) ; ret = r_anal_op ( core -> anal , & op , addr , buf , left , R_ANAL_OP_MASK_ALL ) ; if ( ret ) { r_reg_set_value_by_role ( core -> anal -> reg , R_REG_NAME_PC , pc ) ; r_anal_esil_parse ( esil , R_STRBUF_SAFEGET ( & op . esil ) ) ; r_anal_esil_dumpstack ( esil ) ; r_anal_esil_stack_free ( esil ) ; pc += op . size ; } else { pc += 4 ; } } } } else { eprintf ( \"Cannot<S2SV_blank>find<S2SV_blank>function<S2SV_blank>at<S2SV_blank>0x%08\" PFMT64x \"\\\\n\" , core -> offset ) ; } } break ; case 't' : switch ( input [ 1 ] ) { case 'r' : { RAnalEsil * esil = r_anal_esil_new ( stacksize , iotrap , addrsize ) ; <S2SV_StartBug> if ( ! esil ) <S2SV_EndBug> return ; r_anal_esil_to_reil_setup ( esil , core -> anal , romem , stats ) ; r_anal_esil_set_pc ( esil , core -> offset ) ; r_anal_esil_parse ( esil , input + 2 ) ; r_anal_esil_dumpstack ( esil ) ; r_anal_esil_free ( esil ) ; break ; } case 's' : switch ( input [ 2 ] ) { case 0 : r_anal_esil_session_list ( esil ) ; break ; case '+' : r_anal_esil_session_add ( esil ) ; break ; default : r_core_cmd_help ( core , help_msg_aets ) ; break ; } break ; default : eprintf ( \"Unknown<S2SV_blank>command.<S2SV_blank>Use<S2SV_blank>`aetr`.\\\\n\" ) ; break ; } break ; case 'A' : if ( input [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_aea ) ; } else if ( input [ 1 ] == 'r' ) { cmd_aea ( core , 1 + ( 1 << 1 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'w' ) { cmd_aea ( core , 1 + ( 1 << 2 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'n' ) { cmd_aea ( core , 1 + ( 1 << 3 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'j' ) { cmd_aea ( core , 1 + ( 1 << 4 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == '*' ) { cmd_aea ( core , 1 + ( 1 << 5 ) , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'f' ) { RAnalFunction * fcn = r_anal_get_fcn_in ( core -> anal , core -> offset , - 1 ) ; if ( fcn ) { cmd_aea ( core , 1 , fcn -> addr , r_anal_fcn_size ( fcn ) ) ; } } else { cmd_aea ( core , 1 , core -> offset , ( int ) r_num_math ( core -> num , input + 2 ) ) ; } break ; case 'a' : if ( input [ 1 ] == '?' ) { r_core_cmd_help ( core , help_msg_aea ) ; } else if ( input [ 1 ] == 'r' ) { cmd_aea ( core , 1 << 1 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'w' ) { cmd_aea ( core , 1 << 2 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'n' ) { cmd_aea ( core , 1 << 3 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'j' ) { cmd_aea ( core , 1 << 4 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == '*' ) { cmd_aea ( core , 1 << 5 , core -> offset , r_num_math ( core -> num , input + 2 ) ) ; } else if ( input [ 1 ] == 'f' ) { RAnalFunction * fcn = r_anal_get_fcn_in ( core -> anal , core -> offset , - 1 ) ; if ( fcn ) { switch ( input [ 2 ] ) { case 'j' : cmd_aea ( core , 1 << 4 , fcn -> addr , r_anal_fcn_size ( fcn ) ) ; break ; default : cmd_aea ( core , 1 , fcn -> addr , r_anal_fcn_size ( fcn ) ) ; break ; } break ; } } else { const char * arg = input [ 1 ] ? input + 2 : \"\" ; ut64 len = r_num_math ( core -> num , arg ) ; cmd_aea ( core , 0 , core -> offset , len ) ; } break ; case 'x' : { char * hex ; int ret , bufsz ; input = r_str_trim_ro ( input + 1 ) ; hex = strdup ( input ) ; if ( ! hex ) { break ; } RAnalOp aop = R_EMPTY ; bufsz = r_hex_str2bin ( hex , ( ut8 * ) hex ) ; ret = r_anal_op ( core -> anal , & aop , core -> offset , ( const ut8 * ) hex , bufsz , R_ANAL_OP_MASK_ALL ) ; if ( ret > 0 ) { const char * str = R_STRBUF_SAFEGET ( & aop . esil ) ; char * str2 = r_str_newf ( \"<S2SV_blank>%s\" , str ) ; cmd_anal_esil ( core , str2 ) ; free ( str2 ) ; } r_anal_op_fini ( & aop ) ; break ; } case '?' : if ( input [ 1 ] == '?' ) { r_core_cmd_help ( core , help_detail_ae ) ; break ; } default : r_core_cmd_help ( core , help_msg_ae ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! esil ) { return ; } <S2SV_ModEnd> r_anal_esil_to_reil_setup ( esil\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 struct dentry * nfs4_atomic_open ( struct inode * dir , struct dentry * dentry , struct nameidata * nd ) { struct path path = { . mnt = nd -> path . mnt , . dentry = dentry , } ; struct dentry * parent ; struct iattr attr ; struct rpc_cred * cred ; struct nfs4_state * state ; <S2SV_StartBug> struct dentry * res ; <S2SV_EndBug> if ( nd -> flags & LOOKUP_CREATE ) { attr . ia_mode = nd -> intent . open . create_mode ; attr . ia_valid = ATTR_MODE ; if ( ! IS_POSIXACL ( dir ) ) attr . ia_mode &= ~ current -> fs -> umask ; } else { attr . ia_valid = 0 ; BUG_ON ( nd -> intent . open . flags & O_CREAT ) ; } cred = rpc_lookup_cred ( ) ; if ( IS_ERR ( cred ) ) return ( struct dentry * ) cred ; parent = dentry -> d_parent ; nfs_block_sillyrename ( parent ) ; <S2SV_StartBug> state = nfs4_do_open ( dir , & path , nd -> intent . open . flags , & attr , cred ) ; <S2SV_EndBug> put_rpccred ( cred ) ; if ( IS_ERR ( state ) ) { if ( PTR_ERR ( state ) == - ENOENT ) { d_add ( dentry , NULL ) ; nfs_set_verifier ( dentry , nfs_save_change_attribute ( dir ) ) ; } nfs_unblock_sillyrename ( parent ) ; return ( struct dentry * ) state ; } res = d_add_unique ( dentry , igrab ( state -> inode ) ) ; if ( res != NULL ) path . dentry = res ; nfs_set_verifier ( path . dentry , nfs_save_change_attribute ( dir ) ) ; nfs_unblock_sillyrename ( parent ) ; <S2SV_StartBug> nfs4_intent_set_file ( nd , & path , state ) ; <S2SV_EndBug> return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dentry * res ; fmode_t fmode = nd -> intent . open . flags & ( FMODE_READ | FMODE_WRITE | FMODE_EXEC ) <S2SV_ModStart> & path , fmode , <S2SV_ModStart> path , state , fmode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 <S2SV_StartBug> static inline bool unconditional ( const struct arpt_arp * arp ) <S2SV_EndBug> { static const struct arpt_arp uncond ; <S2SV_StartBug> return memcmp ( arp , & uncond , sizeof ( uncond ) ) == 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( const struct arpt_entry * e <S2SV_ModEnd> ) { static <S2SV_ModStart> uncond ; return e -> target_offset == sizeof ( struct arpt_entry ) && memcmp ( & e -> <S2SV_ModEnd> arp , &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9870\n\n```\nCWE-264 int copy_thread ( unsigned long clone_flags , unsigned long stack_start , unsigned long stk_sz , struct task_struct * p ) { struct thread_info * thread = task_thread_info ( p ) ; struct pt_regs * childregs = task_pt_regs ( p ) ; memset ( & thread -> cpu_context , 0 , sizeof ( struct cpu_context_save ) ) ; if ( likely ( ! ( p -> flags & PF_KTHREAD ) ) ) { * childregs = * current_pt_regs ( ) ; childregs -> ARM_r0 = 0 ; if ( stack_start ) childregs -> ARM_sp = stack_start ; } else { memset ( childregs , 0 , sizeof ( struct pt_regs ) ) ; thread -> cpu_context . r4 = stk_sz ; thread -> cpu_context . r5 = stack_start ; childregs -> ARM_cpsr = SVC_MODE ; } thread -> cpu_context . pc = ( unsigned long ) ret_from_fork ; thread -> cpu_context . sp = ( unsigned long ) childregs ; clear_ptrace_hw_breakpoint ( p ) ; if ( clone_flags & CLONE_SETTLS ) <S2SV_StartBug> thread -> tp_value = childregs -> ARM_r3 ; <S2SV_EndBug> thread_notify ( THREAD_NOTIFY_COPY , thread ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> thread -> tp_value [ 0 ] <S2SV_ModStart> childregs -> ARM_r3 ; thread -> tp_value [ 1 ] = get_tpuser ( )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 int options_parse ( CONF_TYPE type ) { SERVICE_OPTIONS * section ; options_defaults ( ) ; section = & new_service_options ; <S2SV_StartBug> if ( options_file ( configuration_file , type , & section ) ) <S2SV_EndBug> return 1 ; <S2SV_StartBug> if ( init_section ( 1 , & section ) ) <S2SV_EndBug> <S2SV_StartBug> return 1 ; <S2SV_EndBug> s_log ( LOG_NOTICE , \"Configuration<S2SV_blank>successful\" ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & section ) || <S2SV_ModEnd> init_section ( 1 <S2SV_ModStart> section ) ) { s_log ( LOG_ERR , \"Configuration<S2SV_blank>failed\" ) ; options_free ( 0 ) ; <S2SV_ModStart> return 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10318\n\n```\nCWE-264 int fscrypt_process_policy ( struct inode * inode , const struct fscrypt_policy * policy ) <S2SV_StartBug> { <S2SV_EndBug> if ( policy -> version != 0 ) return - EINVAL ; if ( ! inode_has_encryption_context ( inode ) ) { if ( ! inode -> i_sb -> s_cop -> empty_dir ) return - EOPNOTSUPP ; if ( ! inode -> i_sb -> s_cop -> empty_dir ( inode ) ) return - ENOTEMPTY ; return create_encryption_context_from_policy ( inode , policy ) ; } if ( is_encryption_context_consistent_with_policy ( inode , policy ) ) return 0 ; printk ( KERN_WARNING \"%s:<S2SV_blank>Policy<S2SV_blank>inconsistent<S2SV_blank>with<S2SV_blank>encryption<S2SV_blank>context\\\\n\" , __func__ ) ; return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> policy ) { if ( ! inode_owner_or_capable ( inode ) ) return - EACCES ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19959\n\n```\nCWE-000 void zipfileStep ( sqlite3_context * pCtx , int nVal , sqlite3_value * * apVal ) { ZipfileCtx * p ; ZipfileEntry e ; sqlite3_value * pName = 0 ; sqlite3_value * pMode = 0 ; sqlite3_value * pMtime = 0 ; sqlite3_value * pData = 0 ; sqlite3_value * pMethod = 0 ; int bIsDir = 0 ; u32 mode ; int rc = SQLITE_OK ; char * zErr = 0 ; int iMethod = - 1 ; const u8 * aData = 0 ; int nData = 0 ; int szUncompressed = 0 ; u8 * aFree = 0 ; u32 iCrc32 = 0 ; char * zName = 0 ; int nName = 0 ; char * zFree = 0 ; int nByte ; memset ( & e , 0 , sizeof ( e ) ) ; p = ( ZipfileCtx * ) sqlite3_aggregate_context ( pCtx , sizeof ( ZipfileCtx ) ) ; if ( p == 0 ) return ; if ( nVal != 2 && nVal != 4 && nVal != 5 ) { zErr = sqlite3_mprintf ( \"wrong<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments<S2SV_blank>to<S2SV_blank>function<S2SV_blank>zipfile()\" ) ; rc = SQLITE_ERROR ; goto zipfile_step_out ; } pName = apVal [ 0 ] ; if ( nVal == 2 ) { pData = apVal [ 1 ] ; } else { pMode = apVal [ 1 ] ; pMtime = apVal [ 2 ] ; pData = apVal [ 3 ] ; if ( nVal == 5 ) { pMethod = apVal [ 4 ] ; } } zName = ( char * ) sqlite3_value_text ( pName ) ; nName = sqlite3_value_bytes ( pName ) ; if ( zName == 0 ) { zErr = sqlite3_mprintf ( \"first<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>zipfile()<S2SV_blank>must<S2SV_blank>be<S2SV_blank>non-NULL\" ) ; rc = SQLITE_ERROR ; goto zipfile_step_out ; } if ( pMethod && SQLITE_NULL != sqlite3_value_type ( pMethod ) ) { iMethod = ( int ) sqlite3_value_int64 ( pMethod ) ; if ( iMethod != 0 && iMethod != 8 ) { zErr = sqlite3_mprintf ( \"illegal<S2SV_blank>method<S2SV_blank>value:<S2SV_blank>%d\" , iMethod ) ; rc = SQLITE_ERROR ; goto zipfile_step_out ; } } if ( sqlite3_value_type ( pData ) == SQLITE_NULL ) { bIsDir = 1 ; iMethod = 0 ; } else { aData = sqlite3_value_blob ( pData ) ; szUncompressed = nData = sqlite3_value_bytes ( pData ) ; iCrc32 = crc32 ( 0 , aData , nData ) ; if ( iMethod < 0 || iMethod == 8 ) { int nOut = 0 ; rc = zipfileDeflate ( aData , nData , & aFree , & nOut , & zErr ) ; if ( rc != SQLITE_OK ) { goto zipfile_step_out ; } if ( iMethod == 8 || nOut < nData ) { aData = aFree ; nData = nOut ; iMethod = 8 ; } else { iMethod = 0 ; } } } rc = zipfileGetMode ( pMode , bIsDir , & mode , & zErr ) ; if ( rc ) goto zipfile_step_out ; e . mUnixTime = zipfileGetTime ( pMtime ) ; if ( bIsDir == 0 ) { if ( zName [ nName - 1 ] == '/' ) { zErr = sqlite3_mprintf ( \"non-directory<S2SV_blank>name<S2SV_blank>must<S2SV_blank>not<S2SV_blank>end<S2SV_blank>with<S2SV_blank>/\" ) ; rc = SQLITE_ERROR ; goto zipfile_step_out ; } } else { if ( zName [ nName - 1 ] != '/' ) { zName = zFree = sqlite3_mprintf ( \"%s/\" , zName ) ; <S2SV_StartBug> nName ++ ; <S2SV_EndBug> if ( zName == 0 ) { rc = SQLITE_NOMEM ; goto zipfile_step_out ; <S2SV_StartBug> } <S2SV_EndBug> } else { while ( nName > 1 && zName [ nName - 2 ] == '/' ) nName -- ; } } e . cds . iVersionMadeBy = ZIPFILE_NEWENTRY_MADEBY ; e . cds . iVersionExtract = ZIPFILE_NEWENTRY_REQUIRED ; e . cds . flags = ZIPFILE_NEWENTRY_FLAGS ; e . cds . iCompression = ( u16 ) iMethod ; zipfileMtimeToDos ( & e . cds , ( u32 ) e . mUnixTime ) ; e . cds . crc32 = iCrc32 ; e . cds . szCompressed = nData ; e . cds . szUncompressed = szUncompressed ; e . cds . iExternalAttr = ( mode << 16 ) ; e . cds . iOffset = p -> body . n ; e . cds . nFile = ( u16 ) nName ; e . cds . zFile = zName ; nByte = ZIPFILE_LFH_FIXED_SZ + e . cds . nFile + 9 ; if ( ( rc = zipfileBufferGrow ( & p -> body , nByte ) ) ) goto zipfile_step_out ; p -> body . n += zipfileSerializeLFH ( & e , & p -> body . a [ p -> body . n ] ) ; if ( nData > 0 ) { if ( ( rc = zipfileBufferGrow ( & p -> body , nData ) ) ) goto zipfile_step_out ; memcpy ( & p -> body . a [ p -> body . n ] , aData , nData ) ; p -> body . n += nData ; } nByte = ZIPFILE_CDS_FIXED_SZ + e . cds . nFile + 9 ; if ( ( rc = zipfileBufferGrow ( & p -> cds , nByte ) ) ) goto zipfile_step_out ; p -> cds . n += zipfileSerializeCDS ( & e , & p -> cds . a [ p -> cds . n ] ) ; p -> nEntry ++ ; zipfile_step_out : sqlite3_free ( aFree ) ; sqlite3_free ( zFree ) ; if ( rc ) { if ( zErr ) { sqlite3_result_error ( pCtx , zErr , - 1 ) ; } else { sqlite3_result_error_code ( pCtx , rc ) ; } } sqlite3_free ( zErr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> zName ) ; <S2SV_ModEnd> if ( zName <S2SV_ModStart> zipfile_step_out ; } nName = ( int ) strlen ( zName ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3234\n\n```\nCWE-200 static int rose_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct rose_sock * rose = rose_sk ( sk ) ; struct sockaddr_rose * srose = ( struct sockaddr_rose * ) msg -> msg_name ; size_t copied ; unsigned char * asmptr ; struct sk_buff * skb ; int n , er , qbit ; if ( sk -> sk_state != TCP_ESTABLISHED ) return - ENOTCONN ; if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) return er ; qbit = ( skb -> data [ 0 ] & ROSE_Q_BIT ) == ROSE_Q_BIT ; skb_pull ( skb , ROSE_MIN_LEN ) ; if ( rose -> qbitincl ) { asmptr = skb_push ( skb , 1 ) ; * asmptr = qbit ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( srose != NULL ) { <S2SV_StartBug> srose -> srose_family = AF_ROSE ; <S2SV_EndBug> srose -> srose_addr = rose -> dest_addr ; srose -> srose_call = rose -> dest_call ; srose -> srose_ndigis = rose -> dest_ndigis ; if ( msg -> msg_namelen >= sizeof ( struct full_sockaddr_rose ) ) { struct full_sockaddr_rose * full_srose = ( struct full_sockaddr_rose * ) msg -> msg_name ; for ( n = 0 ; n < rose -> dest_ndigis ; n ++ ) full_srose -> srose_digis [ n ] = rose -> dest_digis [ n ] ; msg -> msg_namelen = sizeof ( struct full_sockaddr_rose ) ; } else { if ( rose -> dest_ndigis >= 1 ) { srose -> srose_ndigis = 1 ; srose -> srose_digi = rose -> dest_digis [ 0 ] ; } msg -> msg_namelen = sizeof ( struct sockaddr_rose ) ; } } skb_free_datagram ( sk , skb ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { memset ( srose , 0 , msg -> msg_namelen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10807\n\n```\nCWE-287 static void _sx_sasl_client_process ( sx_t s , sx_plugin_t p , Gsasl_session * sd , const char * mech , const char * in , int inlen ) { _sx_sasl_t ctx = ( _sx_sasl_t ) p -> private ; _sx_sasl_sess_t sctx = NULL ; char * buf = NULL , * out = NULL , * realm = NULL , * * ext_id ; char hostname [ 256 ] ; int ret ; # ifdef HAVE_SSL int i ; # endif size_t buflen , outlen ; assert ( ctx ) ; assert ( ctx -> cb ) ; if ( mech != NULL ) { _sx_debug ( ZONE , \"auth<S2SV_blank>request<S2SV_blank>from<S2SV_blank>client<S2SV_blank>(mechanism=%s)\" , mech ) ; <S2SV_StartBug> if ( ! gsasl_server_support_p ( ctx -> gsasl_ctx , mech ) ) { <S2SV_EndBug> _sx_debug ( ZONE , \"client<S2SV_blank>requested<S2SV_blank>mechanism<S2SV_blank>(%s)<S2SV_blank>that<S2SV_blank>we<S2SV_blank>didn\\'t<S2SV_blank>offer\" , mech ) ; _sx_nad_write ( s , _sx_sasl_failure ( s , _sasl_err_INVALID_MECHANISM , NULL ) , 0 ) ; return ; } ret = gsasl_server_start ( ctx -> gsasl_ctx , mech , & sd ) ; if ( ret != GSASL_OK ) { _sx_debug ( ZONE , \"gsasl_server_start<S2SV_blank>failed,<S2SV_blank>no<S2SV_blank>sasl<S2SV_blank>for<S2SV_blank>this<S2SV_blank>conn;<S2SV_blank>(%d):<S2SV_blank>%s\" , ret , gsasl_strerror ( ret ) ) ; _sx_nad_write ( s , _sx_sasl_failure ( s , _sasl_err_TEMPORARY_FAILURE , gsasl_strerror ( ret ) ) , 0 ) ; return ; } ( ctx -> cb ) ( sx_sasl_cb_GET_REALM , NULL , ( void * * ) & realm , s , ctx -> cbarg ) ; sctx = gsasl_session_hook_get ( sd ) ; if ( sctx != NULL ) free ( sctx ) ; sctx = ( _sx_sasl_sess_t ) calloc ( 1 , sizeof ( struct _sx_sasl_sess_st ) ) ; sctx -> s = s ; sctx -> ctx = ctx ; gsasl_session_hook_set ( sd , ( void * ) sctx ) ; gsasl_property_set ( sd , GSASL_SERVICE , ctx -> appname ) ; gsasl_property_set ( sd , GSASL_REALM , realm ) ; hostname [ 0 ] = '\\\\0' ; gethostname ( hostname , 256 ) ; hostname [ 255 ] = '\\\\0' ; gsasl_property_set ( sd , GSASL_HOSTNAME , hostname ) ; ext_id = NULL ; # ifdef HAVE_SSL for ( i = 0 ; i < s -> env -> nplugins ; i ++ ) if ( s -> env -> plugins [ i ] -> magic == SX_SSL_MAGIC && s -> plugin_data [ s -> env -> plugins [ i ] -> index ] != NULL ) ext_id = ( ( _sx_ssl_conn_t ) s -> plugin_data [ s -> env -> plugins [ i ] -> index ] ) -> external_id ; if ( ext_id != NULL ) { for ( i = 0 ; i < SX_CONN_EXTERNAL_ID_MAX_COUNT ; i ++ ) if ( ext_id [ i ] != NULL ) { ctx -> ext_id [ i ] = strdup ( ext_id [ i ] ) ; } else { ctx -> ext_id [ i ] = NULL ; break ; } } # endif _sx_debug ( ZONE , \"sasl<S2SV_blank>context<S2SV_blank>initialised<S2SV_blank>for<S2SV_blank>%d\" , s -> tag ) ; s -> plugin_data [ p -> index ] = ( void * ) sd ; if ( strcmp ( mech , \"ANONYMOUS\" ) == 0 ) { ( ctx -> cb ) ( sx_sasl_cb_GEN_AUTHZID , NULL , ( void * * ) & out , s , ctx -> cbarg ) ; buf = strdup ( out ) ; buflen = strlen ( buf ) ; } else if ( strstr ( in , \"<\" ) != NULL && strncmp ( in , \"=\" , strstr ( in , \"<\" ) - in ) == 0 ) { _sx_debug ( ZONE , \"gsasl<S2SV_blank>auth<S2SV_blank>string<S2SV_blank>is<S2SV_blank>empty\" ) ; buf = strdup ( \"\" ) ; buflen = strlen ( buf ) ; } else { ret = gsasl_base64_from ( in , inlen , & buf , & buflen ) ; if ( ret != GSASL_OK ) { _sx_debug ( ZONE , \"gsasl_base64_from<S2SV_blank>failed,<S2SV_blank>no<S2SV_blank>sasl<S2SV_blank>for<S2SV_blank>this<S2SV_blank>conn;<S2SV_blank>(%d):<S2SV_blank>%s\" , ret , gsasl_strerror ( ret ) ) ; _sx_nad_write ( s , _sx_sasl_failure ( s , _sasl_err_INCORRECT_ENCODING , gsasl_strerror ( ret ) ) , 0 ) ; if ( buf != NULL ) free ( buf ) ; return ; } } ret = gsasl_step ( sd , buf , buflen , & out , & outlen ) ; } else { ret = gsasl_base64_from ( in , inlen , & buf , & buflen ) ; if ( ret != GSASL_OK ) { _sx_debug ( ZONE , \"gsasl_base64_from<S2SV_blank>failed,<S2SV_blank>no<S2SV_blank>sasl<S2SV_blank>for<S2SV_blank>this<S2SV_blank>conn;<S2SV_blank>(%d):<S2SV_blank>%s\" , ret , gsasl_strerror ( ret ) ) ; _sx_nad_write ( s , _sx_sasl_failure ( s , _sasl_err_INCORRECT_ENCODING , gsasl_strerror ( ret ) ) , 0 ) ; return ; } if ( ! sd ) { _sx_debug ( ZONE , \"response<S2SV_blank>send<S2SV_blank>before<S2SV_blank>auth<S2SV_blank>request<S2SV_blank>enabling<S2SV_blank>mechanism<S2SV_blank>(decoded:<S2SV_blank>%.*s)\" , buflen , buf ) ; _sx_nad_write ( s , _sx_sasl_failure ( s , _sasl_err_MECH_TOO_WEAK , \"response<S2SV_blank>send<S2SV_blank>before<S2SV_blank>auth<S2SV_blank>request<S2SV_blank>enabling<S2SV_blank>mechanism\" ) , 0 ) ; if ( buf != NULL ) free ( buf ) ; return ; } _sx_debug ( ZONE , \"response<S2SV_blank>from<S2SV_blank>client<S2SV_blank>(decoded:<S2SV_blank>%.*s)\" , buflen , buf ) ; ret = gsasl_step ( sd , buf , buflen , & out , & outlen ) ; } if ( buf != NULL ) free ( buf ) ; if ( ret == GSASL_OK ) { _sx_debug ( ZONE , \"sasl<S2SV_blank>handshake<S2SV_blank>completed\" ) ; ret = gsasl_base64_to ( out , outlen , & buf , & buflen ) ; if ( ret == GSASL_OK ) { _sx_nad_write ( s , _sx_sasl_success ( s , buf , buflen ) , 0 ) ; free ( buf ) ; ( ( sx_buf_t ) s -> wbufq -> front -> data ) -> notify = _sx_sasl_notify_success ; ( ( sx_buf_t ) s -> wbufq -> front -> data ) -> notify_arg = ( void * ) p ; } else { _sx_debug ( ZONE , \"gsasl_base64_to<S2SV_blank>failed,<S2SV_blank>no<S2SV_blank>sasl<S2SV_blank>for<S2SV_blank>this<S2SV_blank>conn;<S2SV_blank>(%d):<S2SV_blank>%s\" , ret , gsasl_strerror ( ret ) ) ; _sx_nad_write ( s , _sx_sasl_failure ( s , _sasl_err_INCORRECT_ENCODING , gsasl_strerror ( ret ) ) , 0 ) ; if ( buf != NULL ) free ( buf ) ; } if ( out != NULL ) free ( out ) ; return ; } if ( ret == GSASL_NEEDS_MORE ) { _sx_debug ( ZONE , \"sasl<S2SV_blank>handshake<S2SV_blank>in<S2SV_blank>progress<S2SV_blank>(challenge:<S2SV_blank>%.*s)\" , outlen , out ) ; ret = gsasl_base64_to ( out , outlen , & buf , & buflen ) ; if ( ret == GSASL_OK ) { _sx_nad_write ( s , _sx_sasl_challenge ( s , buf , buflen ) , 0 ) ; free ( buf ) ; } else { _sx_debug ( ZONE , \"gsasl_base64_to<S2SV_blank>failed,<S2SV_blank>no<S2SV_blank>sasl<S2SV_blank>for<S2SV_blank>this<S2SV_blank>conn;<S2SV_blank>(%d):<S2SV_blank>%s\" , ret , gsasl_strerror ( ret ) ) ; _sx_nad_write ( s , _sx_sasl_failure ( s , _sasl_err_INCORRECT_ENCODING , gsasl_strerror ( ret ) ) , 0 ) ; if ( buf != NULL ) free ( buf ) ; } if ( out != NULL ) free ( out ) ; return ; } if ( out != NULL ) free ( out ) ; _sx_debug ( ZONE , \"sasl<S2SV_blank>handshake<S2SV_blank>failed;<S2SV_blank>(%d):<S2SV_blank>%s\" , ret , gsasl_strerror ( ret ) ) ; switch ( ret ) { case GSASL_AUTHENTICATION_ERROR : case GSASL_NO_ANONYMOUS_TOKEN : case GSASL_NO_AUTHID : case GSASL_NO_AUTHZID : case GSASL_NO_PASSWORD : case GSASL_NO_PASSCODE : case GSASL_NO_PIN : case GSASL_NO_SERVICE : case GSASL_NO_HOSTNAME : out = _sasl_err_NOT_AUTHORIZED ; break ; case GSASL_UNKNOWN_MECHANISM : case GSASL_MECHANISM_PARSE_ERROR : out = _sasl_err_INVALID_MECHANISM ; break ; case GSASL_BASE64_ERROR : out = _sasl_err_INCORRECT_ENCODING ; break ; default : out = _sasl_err_MALFORMED_REQUEST ; } _sx_nad_write ( s , _sx_sasl_failure ( s , out , gsasl_strerror ( ret ) ) , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , mech ) || ( ctx -> cb ) ( sx_sasl_cb_CHECK_MECH , ( void * ) mech , NULL , s , ctx -> cbarg ) != sx_sasl_ret_OK\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7026\n\n```\nCWE-362 SYSCALL_DEFINE3 ( shmctl , int , shmid , int , cmd , struct shmid_ds __user * , buf ) { struct shmid_kernel * shp ; int err , version ; struct ipc_namespace * ns ; if ( cmd < 0 || shmid < 0 ) return - EINVAL ; version = ipc_parse_version ( & cmd ) ; ns = current -> nsproxy -> ipc_ns ; switch ( cmd ) { case IPC_INFO : case SHM_INFO : case SHM_STAT : case IPC_STAT : return shmctl_nolock ( ns , shmid , cmd , version , buf ) ; case IPC_RMID : case IPC_SET : return shmctl_down ( ns , shmid , cmd , buf , version ) ; case SHM_LOCK : case SHM_UNLOCK : { struct file * shm_file ; rcu_read_lock ( ) ; shp = shm_obtain_object_check ( ns , shmid ) ; if ( IS_ERR ( shp ) ) { err = PTR_ERR ( shp ) ; goto out_unlock1 ; } audit_ipc_obj ( & ( shp -> shm_perm ) ) ; err = security_shm_shmctl ( shp , cmd ) ; if ( err ) goto out_unlock1 ; ipc_lock_object ( & shp -> shm_perm ) ; if ( ! ns_capable ( ns -> user_ns , CAP_IPC_LOCK ) ) { kuid_t euid = current_euid ( ) ; err = - EPERM ; if ( ! uid_eq ( euid , shp -> shm_perm . uid ) && ! uid_eq ( euid , shp -> shm_perm . cuid ) ) goto out_unlock0 ; if ( cmd == SHM_LOCK && ! rlimit ( RLIMIT_MEMLOCK ) ) goto out_unlock0 ; } shm_file = shp -> shm_file ; <S2SV_StartBug> if ( is_file_hugepages ( shm_file ) ) <S2SV_EndBug> goto out_unlock0 ; if ( cmd == SHM_LOCK ) { struct user_struct * user = current_user ( ) ; err = shmem_lock ( shm_file , 1 , user ) ; if ( ! err && ! ( shp -> shm_perm . mode & SHM_LOCKED ) ) { shp -> shm_perm . mode |= SHM_LOCKED ; shp -> mlock_user = user ; } goto out_unlock0 ; } if ( ! ( shp -> shm_perm . mode & SHM_LOCKED ) ) goto out_unlock0 ; shmem_lock ( shm_file , 0 , shp -> mlock_user ) ; shp -> shm_perm . mode &= ~ SHM_LOCKED ; shp -> mlock_user = NULL ; get_file ( shm_file ) ; ipc_unlock_object ( & shp -> shm_perm ) ; rcu_read_unlock ( ) ; shmem_unlock_mapping ( shm_file -> f_mapping ) ; fput ( shm_file ) ; return err ; } default : return - EINVAL ; } out_unlock0 : ipc_unlock_object ( & shp -> shm_perm ) ; out_unlock1 : rcu_read_unlock ( ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( shm_file == NULL ) { err = - EIDRM ; goto out_unlock0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3525\n\n```\nCWE-20 static void _out_result ( conn_t out , nad_t nad ) { int attr ; jid_t from , to ; char * rkey ; int rkeylen ; attr = nad_find_attr ( nad , 0 , - 1 , \"from\" , NULL ) ; if ( attr < 0 || ( from = jid_new ( NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ) == NULL ) { log_debug ( ZONE , \"missing<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>from<S2SV_blank>on<S2SV_blank>db<S2SV_blank>result<S2SV_blank>packet\" ) ; nad_free ( nad ) ; return ; } attr = nad_find_attr ( nad , 0 , - 1 , \"to\" , NULL ) ; if ( attr < 0 || ( to = jid_new ( NAD_AVAL ( nad , attr ) , NAD_AVAL_L ( nad , attr ) ) ) == NULL ) { log_debug ( ZONE , \"missing<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>to<S2SV_blank>on<S2SV_blank>db<S2SV_blank>result<S2SV_blank>packet\" ) ; jid_free ( from ) ; nad_free ( nad ) ; return ; } rkey = s2s_route_key ( NULL , to -> domain , from -> domain ) ; rkeylen = strlen ( rkey ) ; <S2SV_StartBug> if ( nad_find_attr ( nad , 0 , - 1 , \"type\" , \"valid\" ) >= 0 ) { <S2SV_EndBug> log_write ( out -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>outgoing<S2SV_blank>route<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>now<S2SV_blank>valid%s%s\" , out -> fd -> fd , out -> ip , out -> port , rkey , ( out -> s -> flags & SX_SSL_WRAPPER ) ? \",<S2SV_blank>TLS<S2SV_blank>negotiated\" : \"\" , out -> s -> compressed ? \",<S2SV_blank>ZLIB<S2SV_blank>compression<S2SV_blank>enabled\" : \"\" ) ; xhash_put ( out -> states , pstrdup ( xhash_pool ( out -> states ) , rkey ) , ( void * ) conn_VALID ) ; log_debug ( ZONE , \"%s<S2SV_blank>valid,<S2SV_blank>flushing<S2SV_blank>queue\" , rkey ) ; out_flush_route_queue ( out -> s2s , rkey , rkeylen ) ; free ( rkey ) ; jid_free ( from ) ; jid_free ( to ) ; nad_free ( nad ) ; return ; } log_write ( out -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>outgoing<S2SV_blank>route<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>now<S2SV_blank>invalid\" , out -> fd -> fd , out -> ip , out -> port , rkey ) ; log_write ( out -> s2s -> log , LOG_NOTICE , \"[%d]<S2SV_blank>[%s,<S2SV_blank>port=%d]<S2SV_blank>closing<S2SV_blank>connection\" , out -> fd -> fd , out -> ip , out -> port ) ; sx_error ( out -> s , stream_err_INVALID_ID , \"dialback<S2SV_blank>negotiation<S2SV_blank>failed\" ) ; sx_close ( out -> s ) ; out_bounce_route_queue ( out -> s2s , rkey , rkeylen , stanza_err_SERVICE_UNAVAILABLE ) ; free ( rkey ) ; jid_free ( from ) ; jid_free ( to ) ; nad_free ( nad ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) >= 0 && xhash_get ( out -> states , rkey ) == ( void * ) conn_INPROGRESS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1870\n\n```\nCWE-200 static int run_post_create ( const char * dirname ) { if ( ! dir_is_in_dump_location ( dirname ) ) { error_msg ( \"Bad<S2SV_blank>problem<S2SV_blank>directory<S2SV_blank>name<S2SV_blank>\\'%s\\',<S2SV_blank>should<S2SV_blank>start<S2SV_blank>with:<S2SV_blank>\\'%s\\'\" , dirname , g_settings_dump_location ) ; return 400 ; } <S2SV_StartBug> if ( ! dump_dir_accessible_by_uid ( dirname , client_uid ) ) <S2SV_EndBug> { if ( errno == ENOTDIR ) { error_msg ( \"Path<S2SV_blank>\\'%s\\'<S2SV_blank>isn\\'t<S2SV_blank>problem<S2SV_blank>directory\" , dirname ) ; return 404 ; } error_msg ( \"Problem<S2SV_blank>directory<S2SV_blank>\\'%s\\'<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>accessed<S2SV_blank>by<S2SV_blank>user<S2SV_blank>with<S2SV_blank>uid<S2SV_blank>%ld\" , dirname , ( long ) client_uid ) ; return 403 ; } int child_stdout_fd ; int child_pid = spawn_event_handler_child ( dirname , \"post-create\" , & child_stdout_fd ) ; char * dup_of_dir = NULL ; struct strbuf * cmd_output = strbuf_new ( ) ; bool child_is_post_create = 1 ; read_child_output : for ( ; ; ) { char buf [ 250 ] ; errno = 0 ; int r = safe_read ( child_stdout_fd , buf , sizeof ( buf ) - 1 ) ; if ( r <= 0 ) break ; buf [ r ] = '\\\\0' ; char * raw = buf ; char * newline ; while ( ( newline = strchr ( raw , '\\\\n' ) ) != NULL ) { * newline = '\\\\0' ; strbuf_append_str ( cmd_output , raw ) ; char * msg = cmd_output -> buf ; log ( \"%s\" , msg ) ; if ( child_is_post_create && prefixcmp ( msg , \"DUP_OF_DIR:<S2SV_blank>\" ) == 0 ) { free ( dup_of_dir ) ; dup_of_dir = xstrdup ( msg + strlen ( \"DUP_OF_DIR:<S2SV_blank>\" ) ) ; } strbuf_clear ( cmd_output ) ; raw = newline + 1 ; } strbuf_append_str ( cmd_output , raw ) ; } int status = 0 ; if ( safe_waitpid ( child_pid , & status , 0 ) <= 0 ) perror_msg ( \"waitpid(%d)\" , child_pid ) ; if ( ! child_is_post_create ) goto ret ; if ( status != 0 ) { if ( WIFSIGNALED ( status ) ) { log ( \"\\'post-create\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>signal<S2SV_blank>%d\" , dirname , WTERMSIG ( status ) ) ; goto delete_bad_dir ; } if ( ! dup_of_dir ) { log ( \"\\'post-create\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'<S2SV_blank>exited<S2SV_blank>with<S2SV_blank>%d\" , dirname , WEXITSTATUS ( status ) ) ; goto delete_bad_dir ; } } const char * work_dir = ( dup_of_dir ? dup_of_dir : dirname ) ; struct dump_dir * dd = dd_opendir ( work_dir , 0 ) ; if ( ! dd ) goto delete_bad_dir ; char * count_str = dd_load_text_ext ( dd , FILENAME_COUNT , DD_FAIL_QUIETLY_ENOENT ) ; unsigned long count = strtoul ( count_str , NULL , 10 ) ; if ( ( status != 0 && dup_of_dir ) || count == 0 ) { count ++ ; char new_count_str [ sizeof ( long ) * 3 + 2 ] ; sprintf ( new_count_str , \"%lu\" , count ) ; dd_save_text ( dd , FILENAME_COUNT , new_count_str ) ; if ( strcmp ( dd -> dd_dirname , dirname ) != 0 ) { struct dump_dir * new_dd = dd_opendir ( dirname , DD_OPEN_READONLY ) ; char * last_ocr = NULL ; if ( new_dd ) { last_ocr = dd_load_text_ext ( new_dd , FILENAME_TIME , DD_LOAD_TEXT_RETURN_NULL_ON_FAILURE | DD_FAIL_QUIETLY_ENOENT ) ; dd_close ( new_dd ) ; } else { error_msg ( \"Can\\'t<S2SV_blank>read<S2SV_blank>the<S2SV_blank>last<S2SV_blank>occurrence<S2SV_blank>file<S2SV_blank>from<S2SV_blank>the<S2SV_blank>new<S2SV_blank>dump<S2SV_blank>directory.\" ) ; } if ( ! last_ocr ) { log ( \"Using<S2SV_blank>current<S2SV_blank>time<S2SV_blank>for<S2SV_blank>the<S2SV_blank>last<S2SV_blank>occurrence<S2SV_blank>file<S2SV_blank>which<S2SV_blank>may<S2SV_blank>be<S2SV_blank>incorrect.\" ) ; time_t t = time ( NULL ) ; last_ocr = xasprintf ( \"%lu\" , ( long ) t ) ; } dd_save_text ( dd , FILENAME_LAST_OCCURRENCE , last_ocr ) ; free ( last_ocr ) ; } } dd_sanitize_mode_and_owner ( dd ) ; dd_close ( dd ) ; if ( ! dup_of_dir ) log_notice ( \"New<S2SV_blank>problem<S2SV_blank>directory<S2SV_blank>%s,<S2SV_blank>processing\" , work_dir ) ; else { log_warning ( \"Deleting<S2SV_blank>problem<S2SV_blank>directory<S2SV_blank>%s<S2SV_blank>(dup<S2SV_blank>of<S2SV_blank>%s)\" , strrchr ( dirname , '/' ) + 1 , strrchr ( dup_of_dir , '/' ) + 1 ) ; delete_dump_dir ( dirname ) ; } int fd ; child_pid = spawn_event_handler_child ( work_dir , ( dup_of_dir ? \"notify-dup\" : \"notify\" ) , & fd ) ; xmove_fd ( fd , child_stdout_fd ) ; child_is_post_create = 0 ; strbuf_clear ( cmd_output ) ; free ( dup_of_dir ) ; dup_of_dir = NULL ; goto read_child_output ; delete_bad_dir : log_warning ( \"Deleting<S2SV_blank>problem<S2SV_blank>directory<S2SV_blank>\\'%s\\'\" , dirname ) ; delete_dump_dir ( dirname ) ; ret : strbuf_free ( cmd_output ) ; free ( dup_of_dir ) ; close ( child_stdout_fd ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 400 ; } if ( g_settings_privatereports ) { struct stat statbuf ; if ( lstat ( dirname , & statbuf ) != 0 || ! S_ISDIR ( statbuf . st_mode ) ) { error_msg ( \"Path<S2SV_blank>\\'%s\\'<S2SV_blank>isn\\'t<S2SV_blank>directory\" , dirname ) ; return 404 ; } struct group * gr = getgrnam ( \"abrt\" ) ; if ( ! gr ) { error_msg ( \"Group<S2SV_blank>\\'abrt\\'<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist\" ) ; return 500 ; } if ( statbuf . st_uid != 0 || ! ( statbuf . st_gid == 0 || statbuf . st_gid == gr -> gr_gid ) || statbuf . st_mode & 07 ) { error_msg ( \"Problem<S2SV_blank>directory<S2SV_blank>\\'%s\\'<S2SV_blank>isn\\'t<S2SV_blank>owned<S2SV_blank>by<S2SV_blank>root:abrt<S2SV_blank>or<S2SV_blank>others<S2SV_blank>are<S2SV_blank>not<S2SV_blank>restricted<S2SV_blank>from<S2SV_blank>access\" , dirname ) ; return 403 ; } struct dump_dir * dd = dd_opendir ( dirname , DD_OPEN_READONLY ) ; const bool complete = dd && problem_dump_dir_is_complete ( dd ) ; dd_close ( dd ) ; if ( complete ) { error_msg ( \"Problem<S2SV_blank>directory<S2SV_blank>\\'%s\\'<S2SV_blank>has<S2SV_blank>already<S2SV_blank>been<S2SV_blank>processed\" , dirname ) ; return 403 ; } } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 static int header_read ( SF_PRIVATE * psf , void * ptr , int bytes ) { int count = 0 ; <S2SV_StartBug> if ( psf -> headindex >= SIGNED_SIZEOF ( psf -> header ) ) <S2SV_EndBug> <S2SV_StartBug> return psf_fread ( ptr , 1 , bytes , psf ) ; <S2SV_EndBug> <S2SV_StartBug> if ( psf -> headindex + bytes > SIGNED_SIZEOF ( psf -> header ) ) <S2SV_EndBug> { int most ; most = SIGNED_SIZEOF ( psf -> header ) - psf -> headend ; psf_fread ( psf -> header + psf -> headend , 1 , most , psf ) ; memcpy ( ptr , psf -> header + psf -> headend , most ) ; psf -> headend = psf -> headindex += most ; psf_fread ( ( char * ) ptr + most , bytes - most , 1 , psf ) ; return bytes ; } ; <S2SV_StartBug> if ( psf -> headindex + bytes > psf -> headend ) <S2SV_EndBug> <S2SV_StartBug> { count = psf_fread ( psf -> header + psf -> headend , 1 , bytes - ( psf -> headend - psf -> headindex ) , psf ) ; <S2SV_EndBug> <S2SV_StartBug> if ( count != bytes - ( int ) ( psf -> headend - psf -> headindex ) ) <S2SV_EndBug> { psf_log_printf ( psf , \"Error<S2SV_blank>:<S2SV_blank>psf_fread<S2SV_blank>returned<S2SV_blank>short<S2SV_blank>count.\\\\n\" ) ; return count ; } ; <S2SV_StartBug> psf -> headend += count ; <S2SV_EndBug> } ; <S2SV_StartBug> memcpy ( ptr , psf -> header + psf -> headindex , bytes ) ; <S2SV_EndBug> <S2SV_StartBug> psf -> headindex += bytes ; <S2SV_EndBug> return bytes ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( psf -> header . indx + bytes >= <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . len && psf_bump_header_allocation ( psf , bytes <S2SV_ModStart> ) ) return count <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( psf -> header . indx <S2SV_ModEnd> + bytes > <S2SV_ModStart> > psf -> header . end <S2SV_ModEnd> ) { count <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> + psf -> header . end <S2SV_ModEnd> , 1 , <S2SV_ModStart> ( psf -> header . end <S2SV_ModEnd> - psf -> <S2SV_ModStart> - psf -> header . indx <S2SV_ModEnd> ) , psf <S2SV_ModStart> ( psf -> header . end <S2SV_ModEnd> - psf -> <S2SV_ModStart> - psf -> header . indx <S2SV_ModEnd> ) ) { <S2SV_ModStart> ; psf -> header . end <S2SV_ModEnd> += count ; <S2SV_ModStart> psf -> header . ptr <S2SV_ModStart> + psf -> header . indx <S2SV_ModEnd> , bytes ) <S2SV_ModStart> ; psf -> header . indx <S2SV_ModEnd> += bytes ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0375\n\n```\nCWE-617 int connection_exit_begin_conn ( cell_t * cell , circuit_t * circ ) { edge_connection_t * n_stream ; relay_header_t rh ; char * address = NULL ; uint16_t port = 0 ; <S2SV_StartBug> or_circuit_t * or_circ = NULL ; <S2SV_EndBug> const or_options_t * options = get_options ( ) ; begin_cell_t bcell ; int rv ; uint8_t end_reason = 0 ; assert_circuit_ok ( circ ) ; <S2SV_StartBug> if ( ! CIRCUIT_IS_ORIGIN ( circ ) ) <S2SV_EndBug> <S2SV_StartBug> or_circ = TO_OR_CIRCUIT ( circ ) ; <S2SV_EndBug> relay_header_unpack ( & rh , cell -> payload ) ; if ( rh . length > RELAY_PAYLOAD_SIZE ) return - END_CIRC_REASON_TORPROTOCOL ; if ( ! server_mode ( options ) && circ -> purpose != CIRCUIT_PURPOSE_S_REND_JOINED ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Relay<S2SV_blank>begin<S2SV_blank>cell<S2SV_blank>at<S2SV_blank>non-server.<S2SV_blank>Closing.\" ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , END_STREAM_REASON_EXITPOLICY , NULL ) ; return 0 ; } rv = begin_cell_parse ( cell , & bcell , & end_reason ) ; if ( rv < - 1 ) { return - END_CIRC_REASON_TORPROTOCOL ; } else if ( rv == - 1 ) { tor_free ( bcell . address ) ; <S2SV_StartBug> relay_send_end_cell_from_edge ( rh . stream_id , circ , end_reason , NULL ) ; <S2SV_EndBug> return 0 ; } if ( ! bcell . is_begindir ) { address = bcell . address ; port = bcell . port ; if ( or_circ && or_circ -> p_chan ) { if ( ! options -> AllowSingleHopExits && ( or_circ -> is_first_hop || ( ! connection_or_digest_is_known_relay ( or_circ -> p_chan -> identity_digest ) && should_refuse_unknown_exits ( options ) ) ) ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Attempt<S2SV_blank>by<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>open<S2SV_blank>a<S2SV_blank>stream<S2SV_blank>%s.<S2SV_blank>Closing.\" , safe_str ( channel_get_canonical_remote_descr ( or_circ -> p_chan ) ) , or_circ -> is_first_hop ? \"on<S2SV_blank>first<S2SV_blank>hop<S2SV_blank>of<S2SV_blank>circuit\" : \"from<S2SV_blank>unknown<S2SV_blank>relay\" ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , or_circ -> is_first_hop ? END_STREAM_REASON_TORPROTOCOL : END_STREAM_REASON_MISC , NULL ) ; tor_free ( address ) ; return 0 ; } } } else if ( rh . command == RELAY_COMMAND_BEGIN_DIR ) { if ( ! directory_permits_begindir_requests ( options ) || circ -> purpose != CIRCUIT_PURPOSE_OR ) { relay_send_end_cell_from_edge ( rh . stream_id , circ , <S2SV_StartBug> END_STREAM_REASON_NOTDIRECTORY , NULL ) ; <S2SV_EndBug> return 0 ; } if ( or_circ && or_circ -> p_chan ) address = tor_strdup ( channel_get_actual_remote_address ( or_circ -> p_chan ) ) ; else address = tor_strdup ( \"127.0.0.1\" ) ; port = 1 ; } else { log_warn ( LD_BUG , \"Got<S2SV_blank>an<S2SV_blank>unexpected<S2SV_blank>command<S2SV_blank>%d\" , ( int ) rh . command ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , <S2SV_StartBug> END_STREAM_REASON_INTERNAL , NULL ) ; <S2SV_EndBug> return 0 ; } if ( ! options -> IPv6Exit ) { bcell . flags &= ~ BEGIN_FLAG_IPV6_PREFERRED ; if ( bcell . flags & BEGIN_FLAG_IPV4_NOT_OK ) { tor_free ( address ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , <S2SV_StartBug> END_STREAM_REASON_EXITPOLICY , NULL ) ; <S2SV_EndBug> return 0 ; } } log_debug ( LD_EXIT , \"Creating<S2SV_blank>new<S2SV_blank>exit<S2SV_blank>connection.\" ) ; n_stream = edge_connection_new ( CONN_TYPE_EXIT , AF_INET ) ; n_stream -> dirreq_id = circ -> dirreq_id ; n_stream -> base_ . purpose = EXIT_PURPOSE_CONNECT ; n_stream -> begincell_flags = bcell . flags ; n_stream -> stream_id = rh . stream_id ; n_stream -> base_ . port = port ; n_stream -> package_window = STREAMWINDOW_START ; n_stream -> deliver_window = STREAMWINDOW_START ; if ( circ -> purpose == CIRCUIT_PURPOSE_S_REND_JOINED ) { <S2SV_StartBug> origin_circuit_t * origin_circ = TO_ORIGIN_CIRCUIT ( circ ) ; <S2SV_EndBug> log_info ( LD_REND , \"begin<S2SV_blank>is<S2SV_blank>for<S2SV_blank>rendezvous.<S2SV_blank>configuring<S2SV_blank>stream.\" ) ; n_stream -> base_ . address = tor_strdup ( \"(rendezvous)\" ) ; n_stream -> base_ . state = EXIT_CONN_STATE_CONNECTING ; n_stream -> rend_data = rend_data_dup ( origin_circ -> rend_data ) ; tor_assert ( connection_edge_is_rendezvous_stream ( n_stream ) ) ; assert_circuit_ok ( circ ) ; const int r = rend_service_set_connection_addr_port ( n_stream , origin_circ ) ; if ( r < 0 ) { log_info ( LD_REND , \"Didn\\'t<S2SV_blank>find<S2SV_blank>rendezvous<S2SV_blank>service<S2SV_blank>(port<S2SV_blank>%d)\" , n_stream -> base_ . port ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , END_STREAM_REASON_DONE , <S2SV_StartBug> origin_circ -> cpath -> prev ) ; <S2SV_EndBug> connection_free ( TO_CONN ( n_stream ) ) ; tor_free ( address ) ; if ( r < - 1 ) return END_CIRC_AT_ORIGIN ; else return 0 ; } assert_circuit_ok ( circ ) ; log_debug ( LD_REND , \"Finished<S2SV_blank>assigning<S2SV_blank>addr/port\" ) ; n_stream -> cpath_layer = origin_circ -> cpath -> prev ; n_stream -> next_stream = origin_circ -> p_streams ; n_stream -> on_circuit = circ ; origin_circ -> p_streams = n_stream ; assert_circuit_ok ( circ ) ; origin_circ -> rend_data -> nr_streams ++ ; connection_exit_connect ( n_stream ) ; pathbias_mark_use_success ( origin_circ ) ; tor_free ( address ) ; return 0 ; } tor_strlower ( address ) ; n_stream -> base_ . address = address ; n_stream -> base_ . state = EXIT_CONN_STATE_RESOLVEFAILED ; if ( we_are_hibernating ( ) ) { relay_send_end_cell_from_edge ( rh . stream_id , circ , END_STREAM_REASON_HIBERNATING , NULL ) ; connection_free ( TO_CONN ( n_stream ) ) ; return 0 ; } n_stream -> on_circuit = circ ; if ( rh . command == RELAY_COMMAND_BEGIN_DIR ) { tor_addr_t tmp_addr ; tor_assert ( or_circ ) ; if ( or_circ -> p_chan && channel_get_addr_if_possible ( or_circ -> p_chan , & tmp_addr ) ) { tor_addr_copy ( & n_stream -> base_ . addr , & tmp_addr ) ; } return connection_exit_connect_dir ( n_stream ) ; } log_debug ( LD_EXIT , \"about<S2SV_blank>to<S2SV_blank>start<S2SV_blank>the<S2SV_blank>dns_resolve().\" ) ; switch ( dns_resolve ( n_stream ) ) { case 1 : assert_circuit_ok ( circ ) ; log_debug ( LD_EXIT , \"about<S2SV_blank>to<S2SV_blank>call<S2SV_blank>connection_exit_connect().\" ) ; connection_exit_connect ( n_stream ) ; return 0 ; case - 1 : relay_send_end_cell_from_edge ( rh . stream_id , circ , END_STREAM_REASON_RESOLVEFAILED , NULL ) ; break ; case 0 : assert_circuit_ok ( circ ) ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> or_circuit_t * or_circ = NULL ; origin_circuit_t * origin_circ = NULL ; crypt_path_t * layer_hint <S2SV_ModStart> circ ) ) { <S2SV_ModStart> circ ) ; } else { tor_assert ( circ -> purpose == CIRCUIT_PURPOSE_S_REND_JOINED ) ; origin_circ = TO_ORIGIN_CIRCUIT ( circ ) ; layer_hint = origin_circ -> cpath -> prev ; } <S2SV_ModStart> , end_reason , layer_hint <S2SV_ModEnd> ) ; return <S2SV_ModStart> , END_STREAM_REASON_NOTDIRECTORY , layer_hint <S2SV_ModEnd> ) ; return <S2SV_ModStart> , END_STREAM_REASON_INTERNAL , layer_hint <S2SV_ModEnd> ) ; return <S2SV_ModStart> , END_STREAM_REASON_EXITPOLICY , layer_hint <S2SV_ModEnd> ) ; return <S2SV_ModStart> CIRCUIT_PURPOSE_S_REND_JOINED ) { tor_assert ( origin_circ <S2SV_ModEnd> ) ; log_info <S2SV_ModStart> , END_STREAM_REASON_DONE , layer_hint <S2SV_ModEnd> ) ; connection_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3138\n\n```\nCWE-20 static int wb_id ( netdissect_options * ndo , const struct pkt_id * id , u_int len ) { int i ; const char * cp ; const struct id_off * io ; char c ; int nid ; ND_PRINT ( ( ndo , \"<S2SV_blank>wb-id:\" ) ) ; if ( len < sizeof ( * id ) || ! ND_TTEST ( * id ) ) return ( - 1 ) ; len -= sizeof ( * id ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u/%s:%u<S2SV_blank>(max<S2SV_blank>%u/%s:%u)<S2SV_blank>\" , EXTRACT_32BITS ( & id -> pi_ps . slot ) , ipaddr_string ( ndo , & id -> pi_ps . page . p_sid ) , EXTRACT_32BITS ( & id -> pi_ps . page . p_uid ) , EXTRACT_32BITS ( & id -> pi_mslot ) , ipaddr_string ( ndo , & id -> pi_mpage . p_sid ) , EXTRACT_32BITS ( & id -> pi_mpage . p_uid ) ) ) ; nid = EXTRACT_16BITS ( & id -> pi_ps . nid ) ; len -= sizeof ( * io ) * nid ; io = ( struct id_off * ) ( id + 1 ) ; cp = ( char * ) ( io + nid ) ; <S2SV_StartBug> if ( ! ND_TTEST2 ( cp , len ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; fn_print ( ndo , ( u_char * ) cp , ( u_char * ) cp + len ) ; ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } c = '<' ; for ( i = 0 ; i < nid && ND_TTEST ( * io ) ; ++ io , ++ i ) { ND_PRINT ( ( ndo , \"%c%s:%u\" , c , ipaddr_string ( ndo , & io -> id ) , EXTRACT_32BITS ( & io -> off ) ) ) ; c = ',' ; } if ( i >= nid ) { ND_PRINT ( ( ndo , \">\" ) ) ; return ( 0 ) ; } return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> ND_TTEST2 ( cp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9388\n\n```\nCWE-000 static int ras_getdatastd ( jas_stream_t * in , ras_hdr_t * hdr , ras_cmap_t * cmap , jas_image_t * image ) { int pad ; int nz ; int z ; int c ; int y ; int x ; int v ; int i ; jas_matrix_t * data [ 3 ] ; cmap = 0 ; <S2SV_StartBug> for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { <S2SV_EndBug> <S2SV_StartBug> data [ i ] = jas_matrix_create ( 1 , jas_image_width ( image ) ) ; <S2SV_EndBug> assert ( data [ i ] ) ; } pad = RAS_ROWSIZE ( hdr ) - ( hdr -> width * hdr -> depth + 7 ) / 8 ; for ( y = 0 ; y < hdr -> height ; y ++ ) { nz = 0 ; z = 0 ; for ( x = 0 ; x < hdr -> width ; x ++ ) { while ( nz < hdr -> depth ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) { <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } <S2SV_StartBug> z = ( z << 8 ) | c ; <S2SV_EndBug> nz += 8 ; } v = ( z >> ( nz - hdr -> depth ) ) & RAS_ONES ( hdr -> depth ) ; z &= RAS_ONES ( nz - hdr -> depth ) ; nz -= hdr -> depth ; if ( jas_image_numcmpts ( image ) == 3 ) { jas_matrix_setv ( data [ 0 ] , x , ( RAS_GETRED ( v ) ) ) ; jas_matrix_setv ( data [ 1 ] , x , ( RAS_GETGREEN ( v ) ) ) ; jas_matrix_setv ( data [ 2 ] , x , ( RAS_GETBLUE ( v ) ) ) ; } else { jas_matrix_setv ( data [ 0 ] , x , ( v ) ) ; } } if ( pad ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) { return - 1 ; } } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { if ( jas_image_writecmpt ( image , i , 0 , y , hdr -> width , 1 , data [ i ] ) ) { return - 1 ; } } } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { jas_matrix_destroy ( data [ i ] ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; assert ( <S2SV_ModEnd> jas_image_numcmpts ( image <S2SV_ModStart> ( image ) <= 3 ) ; for ( i = 0 ; i < 3 ; ++ i ) { data [ i ] = 0 ; } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { if ( ! ( <S2SV_ModEnd> data [ i <S2SV_ModStart> image ) ) ) ) { goto error ; } <S2SV_ModEnd> } pad = <S2SV_ModStart> EOF ) { goto error ; } z = ( z << 8 ) | c ; nz += 8 ; } v = ( z >> ( nz - hdr -> depth ) ) & RAS_ONES ( hdr -> depth ) ; z &= RAS_ONES ( nz - hdr -> depth ) ; nz -= hdr -> depth ; if ( jas_image_numcmpts ( image ) == 3 ) { jas_matrix_setv ( data [ 0 ] , x , ( RAS_GETRED ( v ) ) ) ; jas_matrix_setv ( data [ 1 ] , x , ( RAS_GETGREEN ( v ) ) ) ; jas_matrix_setv ( data [ 2 ] , x , ( RAS_GETBLUE ( v ) ) ) ; } else { jas_matrix_setv ( data [ 0 ] , x , ( v ) ) ; } } if ( pad ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) { goto error ; } } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { if ( jas_image_writecmpt ( image , i , 0 , y , hdr -> width , 1 , data [ i ] ) ) { goto error ; } } } for ( i = 0 ; i < jas_image_numcmpts ( image ) ; ++ i ) { jas_matrix_destroy ( data [ i ] ) ; data [ i ] = 0 ; } return 0 ; error : for ( i = 0 ; i < 3 ; ++ i ) { if ( data [ i ] ) { jas_matrix_destroy ( data [ i ] ) ; } } <S2SV_ModStart> 1 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9708\n\n```\nCWE-000 static int cacheDirective ( MaState * state , cchar * key , cchar * value ) { MprTicks lifespan , clientLifespan , serverLifespan ; char * option , * ovalue , * tok ; char * methods , * extensions , * types , * uris ; int flags ; flags = 0 ; lifespan = clientLifespan = serverLifespan = 0 ; methods = uris = extensions = types = 0 ; for ( option = stok ( sclone ( value ) , \"<S2SV_blank>\\\\t\" , & tok ) ; option ; option = stok ( 0 , \"<S2SV_blank>\\\\t\" , & tok ) ) { if ( * option == '/' ) { uris = option ; if ( tok ) { tok [ - 1 ] = ',' ; } break ; } <S2SV_StartBug> option = stok ( option , \"<S2SV_blank>=\\\\t,\" , & ovalue ) ; <S2SV_EndBug> ovalue = strim ( ovalue , \"\\\\\"\\'\" , MPR_TRIM_BOTH ) ; if ( ( int ) isdigit ( ( uchar ) * option ) ) { lifespan = httpGetTicks ( option ) ; } else if ( smatch ( option , \"client\" ) ) { flags |= HTTP_CACHE_CLIENT ; if ( ovalue ) { clientLifespan = httpGetTicks ( ovalue ) ; } } else if ( smatch ( option , \"server\" ) ) { flags |= HTTP_CACHE_SERVER ; if ( ovalue ) { serverLifespan = httpGetTicks ( ovalue ) ; } } else if ( smatch ( option , \"extensions\" ) ) { extensions = ovalue ; } else if ( smatch ( option , \"types\" ) ) { types = ovalue ; } else if ( smatch ( option , \"unique\" ) ) { flags |= HTTP_CACHE_UNIQUE ; } else if ( smatch ( option , \"manual\" ) ) { flags |= HTTP_CACHE_MANUAL ; } else if ( smatch ( option , \"methods\" ) ) { methods = ovalue ; } else { mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"Unknown<S2SV_blank>Cache<S2SV_blank>option<S2SV_blank>\\'%s\\'\" , option ) ; return MPR_ERR_BAD_SYNTAX ; } } if ( lifespan > 0 && ! uris && ! extensions && ! types && ! methods ) { state -> route -> lifespan = lifespan ; } else { httpAddCache ( state -> route , methods , uris , extensions , types , clientLifespan , serverLifespan , flags ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } option = ssplit <S2SV_ModEnd> ( option ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0268\n\n```\nCWE-264 static int msr_open ( struct inode * inode , struct file * file ) { unsigned int cpu ; <S2SV_StartBug> struct cpuinfo_x86 * c ; <S2SV_EndBug> cpu = iminor ( file -> f_path . dentry -> d_inode ) ; if ( cpu >= nr_cpu_ids || ! cpu_online ( cpu ) ) return - ENXIO ; c = & cpu_data ( cpu ) ; if ( ! cpu_has ( c , X86_FEATURE_MSR ) ) return - EIO ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpuinfo_x86 * c ; if ( ! capable ( CAP_SYS_RAWIO ) ) return - EPERM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 rdpCredssp * credssp_new ( freerdp * instance , rdpTransport * transport , rdpSettings * settings ) { rdpCredssp * credssp ; credssp = ( rdpCredssp * ) malloc ( sizeof ( rdpCredssp ) ) ; ZeroMemory ( credssp , sizeof ( rdpCredssp ) ) ; if ( credssp != NULL ) { HKEY hKey ; LONG status ; DWORD dwType ; DWORD dwSize ; credssp -> instance = instance ; credssp -> settings = settings ; credssp -> server = settings -> ServerMode ; credssp -> transport = transport ; credssp -> send_seq_num = 0 ; credssp -> recv_seq_num = 0 ; ZeroMemory ( & credssp -> negoToken , sizeof ( SecBuffer ) ) ; ZeroMemory ( & credssp -> pubKeyAuth , sizeof ( SecBuffer ) ) ; <S2SV_StartBug> ZeroMemory ( & credssp -> authInfo , sizeof ( SecBuffer ) ) ; <S2SV_EndBug> if ( credssp -> server ) { status = RegOpenKeyEx ( HKEY_LOCAL_MACHINE , _T ( \"Software\\\\\\\\FreeRDP\\\\\\\\Server\" ) , 0 , KEY_READ | KEY_WOW64_64KEY , & hKey ) ; if ( status == ERROR_SUCCESS ) { status = RegQueryValueEx ( hKey , _T ( \"SspiModule\" ) , NULL , & dwType , NULL , & dwSize ) ; if ( status == ERROR_SUCCESS ) { credssp -> SspiModule = ( LPTSTR ) malloc ( dwSize + sizeof ( TCHAR ) ) ; status = RegQueryValueEx ( hKey , _T ( \"SspiModule\" ) , NULL , & dwType , ( BYTE * ) credssp -> SspiModule , & dwSize ) ; if ( status == ERROR_SUCCESS ) { _tprintf ( _T ( \"Using<S2SV_blank>SSPI<S2SV_blank>Module:<S2SV_blank>%s\\\\n\" ) , credssp -> SspiModule ) ; RegCloseKey ( hKey ) ; } } } } } return credssp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( SecBuffer ) ) ; SecInvalidateHandle ( & credssp -> context\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1339\n\n```\nCWE-399 static int cuse_channel_release ( struct inode * inode , struct file * file ) { struct fuse_dev * fud = file -> private_data ; struct cuse_conn * cc = fc_to_cc ( fud -> fc ) ; int rc ; mutex_lock ( & cuse_lock ) ; list_del_init ( & cc -> list ) ; mutex_unlock ( & cuse_lock ) ; if ( cc -> dev ) device_unregister ( cc -> dev ) ; if ( cc -> cdev ) { unregister_chrdev_region ( cc -> cdev -> dev , 1 ) ; cdev_del ( cc -> cdev ) ; } <S2SV_StartBug> rc = fuse_dev_release ( inode , file ) ; <S2SV_EndBug> return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } fuse_conn_put ( & cc -> fc ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int llcp_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; unsigned int copied , rlen ; struct sk_buff * skb , * cskb ; int err = 0 ; pr_debug ( \"%p<S2SV_blank>%zu\\\\n\" , sk , len ) ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> lock_sock ( sk ) ; if ( sk -> sk_state == LLCP_CLOSED && skb_queue_empty ( & sk -> sk_receive_queue ) ) { release_sock ( sk ) ; return 0 ; } release_sock ( sk ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) { pr_err ( \"Recv<S2SV_blank>datagram<S2SV_blank>failed<S2SV_blank>state<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d\" , sk -> sk_state , err , sock_error ( sk ) ) ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } rlen = skb -> len ; copied = min_t ( unsigned int , rlen , len ) ; cskb = skb ; if ( skb_copy_datagram_iovec ( cskb , 0 , msg -> msg_iov , copied ) ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - EFAULT ; } sock_recv_timestamp ( msg , sk , skb ) ; if ( sk -> sk_type == SOCK_DGRAM && msg -> msg_name ) { struct nfc_llcp_ui_cb * ui_cb = nfc_llcp_ui_skb_cb ( skb ) ; struct sockaddr_nfc_llcp * sockaddr = ( struct sockaddr_nfc_llcp * ) msg -> msg_name ; msg -> msg_namelen = sizeof ( struct sockaddr_nfc_llcp ) ; pr_debug ( \"Datagram<S2SV_blank>socket<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , ui_cb -> dsap , ui_cb -> ssap ) ; memset ( sockaddr , 0 , sizeof ( * sockaddr ) ) ; sockaddr -> sa_family = AF_NFC ; sockaddr -> nfc_protocol = NFC_PROTO_NFC_DEP ; sockaddr -> dsap = ui_cb -> dsap ; sockaddr -> ssap = ui_cb -> ssap ; } if ( ! ( flags & MSG_PEEK ) ) { if ( sk -> sk_type == SOCK_STREAM || sk -> sk_type == SOCK_DGRAM || sk -> sk_type == SOCK_RAW ) { skb_pull ( skb , copied ) ; if ( skb -> len ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; goto done ; } } kfree_skb ( skb ) ; } done : if ( sk -> sk_type == SOCK_SEQPACKET && ( flags & MSG_TRUNC ) ) copied = rlen ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) ; <S2SV_ModEnd> lock_sock ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1023\n\n```\nCWE-000 int rds_ib_xmit ( struct rds_connection * conn , struct rds_message * rm , unsigned int hdr_off , unsigned int sg , unsigned int off ) { struct rds_ib_connection * ic = conn -> c_transport_data ; struct ib_device * dev = ic -> i_cm_id -> device ; struct rds_ib_send_work * send = NULL ; struct rds_ib_send_work * first ; struct rds_ib_send_work * prev ; struct ib_send_wr * failed_wr ; struct scatterlist * scat ; u32 pos ; u32 i ; u32 work_alloc ; u32 credit_alloc = 0 ; u32 posted ; u32 adv_credits = 0 ; int send_flags = 0 ; int bytes_sent = 0 ; int ret ; int flow_controlled = 0 ; int nr_sig = 0 ; BUG_ON ( off % RDS_FRAG_SIZE ) ; BUG_ON ( hdr_off != 0 && hdr_off != sizeof ( struct rds_header ) ) ; if ( conn -> c_loopback && rm -> m_inc . i_hdr . h_flags & RDS_FLAG_CONG_BITMAP ) { rds_cong_map_updated ( conn -> c_fcong , ~ ( u64 ) 0 ) ; <S2SV_StartBug> return sizeof ( struct rds_header ) + RDS_CONG_MAP_BYTES ; <S2SV_EndBug> } if ( be32_to_cpu ( rm -> m_inc . i_hdr . h_len ) == 0 ) i = 1 ; else i = ceil ( be32_to_cpu ( rm -> m_inc . i_hdr . h_len ) , RDS_FRAG_SIZE ) ; work_alloc = rds_ib_ring_alloc ( & ic -> i_send_ring , i , & pos ) ; if ( work_alloc == 0 ) { set_bit ( RDS_LL_SEND_FULL , & conn -> c_flags ) ; rds_ib_stats_inc ( s_ib_tx_ring_full ) ; ret = - ENOMEM ; goto out ; } if ( ic -> i_flowctl ) { credit_alloc = rds_ib_send_grab_credits ( ic , work_alloc , & posted , 0 , RDS_MAX_ADV_CREDIT ) ; adv_credits += posted ; if ( credit_alloc < work_alloc ) { rds_ib_ring_unalloc ( & ic -> i_send_ring , work_alloc - credit_alloc ) ; work_alloc = credit_alloc ; flow_controlled = 1 ; } if ( work_alloc == 0 ) { set_bit ( RDS_LL_SEND_FULL , & conn -> c_flags ) ; rds_ib_stats_inc ( s_ib_tx_throttle ) ; ret = - ENOMEM ; goto out ; } } if ( ! ic -> i_data_op ) { if ( rm -> data . op_nents ) { rm -> data . op_count = ib_dma_map_sg ( dev , rm -> data . op_sg , rm -> data . op_nents , DMA_TO_DEVICE ) ; rdsdebug ( \"ic<S2SV_blank>%p<S2SV_blank>mapping<S2SV_blank>rm<S2SV_blank>%p:<S2SV_blank>%d\\\\n\" , ic , rm , rm -> data . op_count ) ; if ( rm -> data . op_count == 0 ) { rds_ib_stats_inc ( s_ib_tx_sg_mapping_failure ) ; rds_ib_ring_unalloc ( & ic -> i_send_ring , work_alloc ) ; ret = - ENOMEM ; goto out ; } } else { rm -> data . op_count = 0 ; } rds_message_addref ( rm ) ; ic -> i_data_op = & rm -> data ; if ( test_bit ( RDS_MSG_ACK_REQUIRED , & rm -> m_flags ) ) rm -> m_inc . i_hdr . h_flags |= RDS_FLAG_ACK_REQUIRED ; if ( test_bit ( RDS_MSG_RETRANSMITTED , & rm -> m_flags ) ) rm -> m_inc . i_hdr . h_flags |= RDS_FLAG_RETRANSMITTED ; if ( rm -> rdma . op_active ) { struct rds_ext_header_rdma ext_hdr ; ext_hdr . h_rdma_rkey = cpu_to_be32 ( rm -> rdma . op_rkey ) ; rds_message_add_extension ( & rm -> m_inc . i_hdr , RDS_EXTHDR_RDMA , & ext_hdr , sizeof ( ext_hdr ) ) ; } if ( rm -> m_rdma_cookie ) { rds_message_add_rdma_dest_extension ( & rm -> m_inc . i_hdr , rds_rdma_cookie_key ( rm -> m_rdma_cookie ) , rds_rdma_cookie_offset ( rm -> m_rdma_cookie ) ) ; } rm -> m_inc . i_hdr . h_ack = cpu_to_be64 ( rds_ib_piggyb_ack ( ic ) ) ; rds_message_make_checksum ( & rm -> m_inc . i_hdr ) ; if ( ic -> i_flowctl ) { rds_ib_send_grab_credits ( ic , 0 , & posted , 1 , RDS_MAX_ADV_CREDIT - adv_credits ) ; adv_credits += posted ; BUG_ON ( adv_credits > 255 ) ; } } if ( rm -> rdma . op_active && rm -> rdma . op_fence ) send_flags = IB_SEND_FENCE ; send = & ic -> i_sends [ pos ] ; first = send ; prev = NULL ; scat = & ic -> i_data_op -> op_sg [ sg ] ; i = 0 ; do { unsigned int len = 0 ; send -> s_wr . send_flags = send_flags ; send -> s_wr . opcode = IB_WR_SEND ; send -> s_wr . num_sge = 1 ; send -> s_wr . next = NULL ; send -> s_queued = jiffies ; send -> s_op = NULL ; send -> s_sge [ 0 ] . addr = ic -> i_send_hdrs_dma + ( pos * sizeof ( struct rds_header ) ) ; send -> s_sge [ 0 ] . length = sizeof ( struct rds_header ) ; memcpy ( & ic -> i_send_hdrs [ pos ] , & rm -> m_inc . i_hdr , sizeof ( struct rds_header ) ) ; if ( i < work_alloc && scat != & rm -> data . op_sg [ rm -> data . op_count ] ) { len = min ( RDS_FRAG_SIZE , ib_sg_dma_len ( dev , scat ) - off ) ; send -> s_wr . num_sge = 2 ; send -> s_sge [ 1 ] . addr = ib_sg_dma_address ( dev , scat ) + off ; send -> s_sge [ 1 ] . length = len ; bytes_sent += len ; off += len ; if ( off == ib_sg_dma_len ( dev , scat ) ) { scat ++ ; off = 0 ; } } rds_ib_set_wr_signal_state ( ic , send , 0 ) ; if ( ic -> i_flowctl && flow_controlled && i == ( work_alloc - 1 ) ) send -> s_wr . send_flags |= IB_SEND_SIGNALED | IB_SEND_SOLICITED ; if ( send -> s_wr . send_flags & IB_SEND_SIGNALED ) nr_sig ++ ; rdsdebug ( \"send<S2SV_blank>%p<S2SV_blank>wr<S2SV_blank>%p<S2SV_blank>num_sge<S2SV_blank>%u<S2SV_blank>next<S2SV_blank>%p\\\\n\" , send , & send -> s_wr , send -> s_wr . num_sge , send -> s_wr . next ) ; if ( ic -> i_flowctl && adv_credits ) { struct rds_header * hdr = & ic -> i_send_hdrs [ pos ] ; hdr -> h_credit = adv_credits ; rds_message_make_checksum ( hdr ) ; adv_credits = 0 ; rds_ib_stats_inc ( s_ib_tx_credit_updates ) ; } if ( prev ) prev -> s_wr . next = & send -> s_wr ; prev = send ; pos = ( pos + 1 ) % ic -> i_send_ring . w_nr ; send = & ic -> i_sends [ pos ] ; i ++ ; } while ( i < work_alloc && scat != & rm -> data . op_sg [ rm -> data . op_count ] ) ; if ( hdr_off == 0 ) bytes_sent += sizeof ( struct rds_header ) ; if ( scat == & rm -> data . op_sg [ rm -> data . op_count ] ) { prev -> s_op = ic -> i_data_op ; prev -> s_wr . send_flags |= IB_SEND_SOLICITED ; ic -> i_data_op = NULL ; } if ( i < work_alloc ) { rds_ib_ring_unalloc ( & ic -> i_send_ring , work_alloc - i ) ; work_alloc = i ; } if ( ic -> i_flowctl && i < credit_alloc ) rds_ib_send_add_credits ( conn , credit_alloc - i ) ; if ( nr_sig ) atomic_add ( nr_sig , & ic -> i_signaled_sends ) ; failed_wr = & first -> s_wr ; ret = ib_post_send ( ic -> i_cm_id -> qp , & first -> s_wr , & failed_wr ) ; rdsdebug ( \"ic<S2SV_blank>%p<S2SV_blank>first<S2SV_blank>%p<S2SV_blank>(wr<S2SV_blank>%p)<S2SV_blank>ret<S2SV_blank>%d<S2SV_blank>wr<S2SV_blank>%p\\\\n\" , ic , first , & first -> s_wr , ret , failed_wr ) ; BUG_ON ( failed_wr != & first -> s_wr ) ; if ( ret ) { printk ( KERN_WARNING \"RDS/IB:<S2SV_blank>ib_post_send<S2SV_blank>to<S2SV_blank>%pI4<S2SV_blank>\" \"returned<S2SV_blank>%d\\\\n\" , & conn -> c_faddr , ret ) ; rds_ib_ring_unalloc ( & ic -> i_send_ring , work_alloc ) ; rds_ib_sub_signaled ( ic , nr_sig ) ; if ( prev -> s_op ) { ic -> i_data_op = prev -> s_op ; prev -> s_op = NULL ; } rds_ib_conn_error ( ic -> conn , \"ib_post_send<S2SV_blank>failed\\\\n\" ) ; goto out ; } ret = bytes_sent ; out : BUG_ON ( adv_credits ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; scat = & rm -> data . op_sg [ sg ] ; ret = <S2SV_ModEnd> sizeof ( struct <S2SV_ModStart> ) + RDS_CONG_MAP_BYTES ; ret = min_t ( int , ret , scat -> length - conn -> c_xmit_data_off ) ; return ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int svc_log ( SvcContext * svc_ctx , int level , const char * fmt , ... ) { <S2SV_EndBug> char buf [ 512 ] ; int retval = 0 ; va_list ap ; <S2SV_StartBug> SvcInternal * const si = get_svc_internal ( svc_ctx ) ; <S2SV_EndBug> if ( level > svc_ctx -> log_level ) { return retval ; } va_start ( ap , fmt ) ; retval = vsnprintf ( buf , sizeof ( buf ) , fmt , ap ) ; va_end ( ap ) ; if ( svc_ctx -> log_print ) { printf ( \"%s\" , buf ) ; } else { strncat ( si -> message_buffer , buf , sizeof ( si -> message_buffer ) - strlen ( si -> message_buffer ) - 1 ) ; } if ( level == SVC_LOG_ERROR ) { si -> codec_ctx -> err_detail = si -> message_buffer ; } return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * svc_ctx , SVC_LOG_LEVEL <S2SV_ModEnd> level , const <S2SV_ModStart> va_list ap ; SvcInternal_t <S2SV_ModEnd> * const si\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 static int do_timer_create ( clockid_t which_clock , struct sigevent * event , timer_t __user * created_timer_id ) { const struct k_clock * kc = clockid_to_kclock ( which_clock ) ; struct k_itimer * new_timer ; int error , new_timer_id ; int it_id_set = IT_ID_NOT_SET ; if ( ! kc ) return - EINVAL ; if ( ! kc -> timer_create ) return - EOPNOTSUPP ; new_timer = alloc_posix_timer ( ) ; if ( unlikely ( ! new_timer ) ) return - EAGAIN ; spin_lock_init ( & new_timer -> it_lock ) ; new_timer_id = posix_timer_add ( new_timer ) ; if ( new_timer_id < 0 ) { error = new_timer_id ; goto out ; } it_id_set = IT_ID_SET ; new_timer -> it_id = ( timer_t ) new_timer_id ; new_timer -> it_clock = which_clock ; new_timer -> kclock = kc ; <S2SV_StartBug> new_timer -> it_overrun = - 1 ; <S2SV_EndBug> if ( event ) { rcu_read_lock ( ) ; new_timer -> it_pid = get_pid ( good_sigevent ( event ) ) ; rcu_read_unlock ( ) ; if ( ! new_timer -> it_pid ) { error = - EINVAL ; goto out ; } new_timer -> it_sigev_notify = event -> sigev_notify ; new_timer -> sigq -> info . si_signo = event -> sigev_signo ; new_timer -> sigq -> info . si_value = event -> sigev_value ; } else { new_timer -> it_sigev_notify = SIGEV_SIGNAL ; new_timer -> sigq -> info . si_signo = SIGALRM ; memset ( & new_timer -> sigq -> info . si_value , 0 , sizeof ( sigval_t ) ) ; new_timer -> sigq -> info . si_value . sival_int = new_timer -> it_id ; new_timer -> it_pid = get_pid ( task_tgid ( current ) ) ; } new_timer -> sigq -> info . si_tid = new_timer -> it_id ; new_timer -> sigq -> info . si_code = SI_TIMER ; if ( copy_to_user ( created_timer_id , & new_timer_id , sizeof ( new_timer_id ) ) ) { error = - EFAULT ; goto out ; } error = kc -> timer_create ( new_timer ) ; if ( error ) goto out ; spin_lock_irq ( & current -> sighand -> siglock ) ; new_timer -> it_signal = current -> signal ; list_add ( & new_timer -> list , & current -> signal -> posix_timers ) ; spin_unlock_irq ( & current -> sighand -> siglock ) ; return 0 ; out : release_posix_timer ( new_timer , it_id_set ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> it_overrun = - 1LL <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10060\n\n```\nCWE-20 static MagickBooleanType ConcatenateImages ( int argc , char * * argv , ExceptionInfo * exception ) { FILE * input , * output ; <S2SV_StartBug> int <S2SV_EndBug> c ; register ssize_t i ; if ( ExpandFilenames ( & argc , & argv ) == MagickFalse ) ThrowFileException ( exception , ResourceLimitError , \"MemoryAllocationFailed\" , GetExceptionMessage ( errno ) ) ; output = fopen_utf8 ( argv [ argc - 1 ] , \"wb\" ) ; if ( output == ( FILE * ) NULL ) { ThrowFileException ( exception , FileOpenError , \"UnableToOpenFile\" , argv [ argc - 1 ] ) ; return ( MagickFalse ) ; } <S2SV_StartBug> for ( i = 2 ; i < ( ssize_t ) ( argc - 1 ) ; i ++ ) { <S2SV_EndBug> # if 0 fprintf ( stderr , \"DEBUG:<S2SV_blank>Concatenate<S2SV_blank>Image:<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , argv [ i ] ) ; # endif input = fopen_utf8 ( argv [ i ] , \"rb\" ) ; if ( input == ( FILE * ) NULL ) { ThrowFileException ( exception , FileOpenError , \"UnableToOpenFile\" , argv [ i ] ) ; continue ; } for ( c = fgetc ( input ) ; c != EOF ; c = fgetc ( input ) ) <S2SV_StartBug> ( void ) fputc ( ( char ) c , output ) ; <S2SV_EndBug> <S2SV_StartBug> ( void ) fclose ( input ) ; <S2SV_EndBug> ( void ) remove_utf8 ( argv [ i ] ) ; } ( void ) fclose ( output ) ; <S2SV_StartBug> return ( MagickTrue ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * output ; MagickBooleanType status ; <S2SV_ModStart> ) ; } status = MagickTrue ; <S2SV_ModStart> i ++ ) { <S2SV_ModEnd> input = fopen_utf8 <S2SV_ModStart> input ) ) if ( fputc ( ( char ) c , output ) != c ) status = MagickFalse ; <S2SV_ModStart> ( void ) fclose ( input <S2SV_ModEnd> ) ; ( <S2SV_ModStart> ( void ) remove_utf8 ( argv [ i ] ) ; } ( void ) fclose ( <S2SV_ModEnd> output ) ; <S2SV_ModStart> ; return ( status <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static struct sock * dccp_v6_request_recv_sock ( struct sock * sk , struct sk_buff * skb , struct request_sock * req , struct dst_entry * dst ) { struct inet6_request_sock * ireq6 = inet6_rsk ( req ) ; struct ipv6_pinfo * newnp , * np = inet6_sk ( sk ) ; struct inet_sock * newinet ; struct dccp6_sock * newdp6 ; struct sock * newsk ; struct ipv6_txoptions * opt ; if ( skb -> protocol == htons ( ETH_P_IP ) ) { newsk = dccp_v4_request_recv_sock ( sk , skb , req , dst ) ; if ( newsk == NULL ) return NULL ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; ipv6_addr_set_v4mapped ( newinet -> inet_daddr , & newnp -> daddr ) ; ipv6_addr_set_v4mapped ( newinet -> inet_saddr , & newnp -> saddr ) ; ipv6_addr_copy ( & newnp -> rcv_saddr , & newnp -> saddr ) ; inet_csk ( newsk ) -> icsk_af_ops = & dccp_ipv6_mapped ; newsk -> sk_backlog_rcv = dccp_v4_do_rcv ; newnp -> pktoptions = NULL ; newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; dccp_sync_mss ( newsk , inet_csk ( newsk ) -> icsk_pmtu_cookie ) ; return newsk ; } opt = np -> opt ; if ( sk_acceptq_is_full ( sk ) ) goto out_overflow ; if ( dst == NULL ) { struct in6_addr * final_p , final ; struct flowi6 fl6 ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_proto = IPPROTO_DCCP ; ipv6_addr_copy ( & fl6 . daddr , & ireq6 -> rmt_addr ) ; final_p = fl6_update_dst ( & fl6 , opt , & final ) ; ipv6_addr_copy ( & fl6 . saddr , & ireq6 -> loc_addr ) ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . fl6_dport = inet_rsk ( req ) -> rmt_port ; fl6 . fl6_sport = inet_rsk ( req ) -> loc_port ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p , false ) ; if ( IS_ERR ( dst ) ) goto out ; } newsk = dccp_create_openreq_child ( sk , req , skb ) ; if ( newsk == NULL ) goto out_nonewsk ; __ip6_dst_store ( newsk , dst , NULL , NULL ) ; newsk -> sk_route_caps = dst -> dev -> features & ~ ( NETIF_F_IP_CSUM | NETIF_F_TSO ) ; newdp6 = ( struct dccp6_sock * ) newsk ; newinet = inet_sk ( newsk ) ; newinet -> pinet6 = & newdp6 -> inet6 ; newnp = inet6_sk ( newsk ) ; memcpy ( newnp , np , sizeof ( struct ipv6_pinfo ) ) ; ipv6_addr_copy ( & newnp -> daddr , & ireq6 -> rmt_addr ) ; ipv6_addr_copy ( & newnp -> saddr , & ireq6 -> loc_addr ) ; ipv6_addr_copy ( & newnp -> rcv_saddr , & ireq6 -> loc_addr ) ; newsk -> sk_bound_dev_if = ireq6 -> iif ; <S2SV_StartBug> newinet -> opt = NULL ; <S2SV_EndBug> newnp -> rxopt . all = np -> rxopt . all ; newnp -> pktoptions = NULL ; if ( ireq6 -> pktopts != NULL ) { newnp -> pktoptions = skb_clone ( ireq6 -> pktopts , GFP_ATOMIC ) ; kfree_skb ( ireq6 -> pktopts ) ; ireq6 -> pktopts = NULL ; if ( newnp -> pktoptions ) skb_set_owner_r ( newnp -> pktoptions , newsk ) ; } newnp -> opt = NULL ; newnp -> mcast_oif = inet6_iif ( skb ) ; newnp -> mcast_hops = ipv6_hdr ( skb ) -> hop_limit ; if ( opt != NULL ) { newnp -> opt = ipv6_dup_options ( newsk , opt ) ; if ( opt != np -> opt ) sock_kfree_s ( sk , opt , opt -> tot_len ) ; } inet_csk ( newsk ) -> icsk_ext_hdr_len = 0 ; if ( newnp -> opt != NULL ) inet_csk ( newsk ) -> icsk_ext_hdr_len = ( newnp -> opt -> opt_nflen + newnp -> opt -> opt_flen ) ; dccp_sync_mss ( newsk , dst_mtu ( dst ) ) ; newinet -> inet_daddr = newinet -> inet_saddr = LOOPBACK4_IPV6 ; newinet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; if ( __inet_inherit_port ( sk , newsk ) < 0 ) { sock_put ( newsk ) ; goto out ; } __inet6_hash ( newsk , NULL ) ; return newsk ; out_overflow : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENOVERFLOWS ) ; out_nonewsk : dst_release ( dst ) ; out : NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_LISTENDROPS ) ; if ( opt != NULL && opt != np -> opt ) sock_kfree_s ( sk , opt , opt -> tot_len ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; newinet -> inet_opt <S2SV_ModEnd> = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13223\n\n```\nCWE-617 static float * get_window ( vorb * f , int len ) { len <<= 1 ; if ( len == f -> blocksize_0 ) return f -> window [ 0 ] ; if ( len == f -> blocksize_1 ) return f -> window [ 1 ] ; <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ] ; <S2SV_ModEnd> return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8043\n\n```\nCWE-476 static int unimac_mdio_probe ( struct platform_device * pdev ) { struct unimac_mdio_pdata * pdata = pdev -> dev . platform_data ; struct unimac_mdio_priv * priv ; struct device_node * np ; struct mii_bus * bus ; struct resource * r ; int ret ; np = pdev -> dev . of_node ; priv = devm_kzalloc ( & pdev -> dev , sizeof ( * priv ) , GFP_KERNEL ) ; if ( ! priv ) return - ENOMEM ; r = platform_get_resource ( pdev , IORESOURCE_MEM , 0 ) ; <S2SV_StartBug> priv -> base = devm_ioremap ( & pdev -> dev , r -> start , resource_size ( r ) ) ; <S2SV_EndBug> if ( ! priv -> base ) { dev_err ( & pdev -> dev , \"failed<S2SV_blank>to<S2SV_blank>remap<S2SV_blank>register\\\\n\" ) ; return - ENOMEM ; } priv -> mii_bus = mdiobus_alloc ( ) ; if ( ! priv -> mii_bus ) return - ENOMEM ; bus = priv -> mii_bus ; bus -> priv = priv ; if ( pdata ) { bus -> name = pdata -> bus_name ; priv -> wait_func = pdata -> wait_func ; priv -> wait_func_data = pdata -> wait_func_data ; bus -> phy_mask = ~ pdata -> phy_mask ; } else { bus -> name = \"unimac<S2SV_blank>MII<S2SV_blank>bus\" ; priv -> wait_func_data = priv ; priv -> wait_func = unimac_mdio_poll ; } bus -> parent = & pdev -> dev ; bus -> read = unimac_mdio_read ; bus -> write = unimac_mdio_write ; bus -> reset = unimac_mdio_reset ; snprintf ( bus -> id , MII_BUS_ID_SIZE , \"%s-%d\" , pdev -> name , pdev -> id ) ; ret = of_mdiobus_register ( bus , np ) ; if ( ret ) { dev_err ( & pdev -> dev , \"MDIO<S2SV_blank>bus<S2SV_blank>registration<S2SV_blank>failed\\\\n\" ) ; goto out_mdio_free ; } platform_set_drvdata ( pdev , priv ) ; dev_info ( & pdev -> dev , \"Broadcom<S2SV_blank>UniMAC<S2SV_blank>MDIO<S2SV_blank>bus<S2SV_blank>at<S2SV_blank>0x%p\\\\n\" , priv -> base ) ; return 0 ; out_mdio_free : mdiobus_free ( bus ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; if ( ! r ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void uipc_flush_ch_locked ( tUIPC_CH_ID ch_id ) { char buf [ UIPC_FLUSH_BUFFER_SIZE ] ; struct pollfd pfd ; int ret ; pfd . events = POLLIN ; pfd . fd = uipc_main . ch [ ch_id ] . fd ; if ( uipc_main . ch [ ch_id ] . fd == UIPC_DISCONNECTED ) { BTIF_TRACE_EVENT ( \"%s()<S2SV_blank>-<S2SV_blank>fd<S2SV_blank>disconnected.<S2SV_blank>Exiting\" , __FUNCTION__ ) ; return ; } while ( 1 ) { <S2SV_StartBug> ret = poll ( & pfd , 1 , 1 ) ; <S2SV_EndBug> BTIF_TRACE_VERBOSE ( \"%s()<S2SV_blank>-<S2SV_blank>polling<S2SV_blank>fd<S2SV_blank>%d,<S2SV_blank>revents:<S2SV_blank>0x%x,<S2SV_blank>ret<S2SV_blank>%d\" , __FUNCTION__ , pfd . fd , pfd . revents , ret ) ; if ( pfd . revents & ( POLLERR | POLLHUP ) ) { BTIF_TRACE_EVENT ( \"%s()<S2SV_blank>-<S2SV_blank>POLLERR<S2SV_blank>or<S2SV_blank>POLLHUP.<S2SV_blank>Exiting\" , __FUNCTION__ ) ; return ; } if ( ret <= 0 ) { BTIF_TRACE_EVENT ( \"%s()<S2SV_blank>-<S2SV_blank>error<S2SV_blank>(%d).<S2SV_blank>Exiting\" , __FUNCTION__ , ret ) ; return ; } <S2SV_StartBug> read ( pfd . fd , & buf , UIPC_FLUSH_BUFFER_SIZE ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ret = TEMP_FAILURE_RETRY ( <S2SV_ModStart> 1 , 1 ) <S2SV_ModStart> return ; } TEMP_FAILURE_RETRY ( <S2SV_ModStart> , UIPC_FLUSH_BUFFER_SIZE ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jas_seq2d_t * jas_seq2d_copy ( jas_seq2d_t * x ) { jas_matrix_t * y ; <S2SV_StartBug> int i ; <S2SV_EndBug> int j ; y = jas_seq2d_create ( jas_seq2d_xstart ( x ) , jas_seq2d_ystart ( x ) , jas_seq2d_xend ( x ) , jas_seq2d_yend ( x ) ) ; assert ( y ) ; for ( i = 0 ; i < x -> numrows_ ; ++ i ) { for ( j = 0 ; j < x -> numcols_ ; ++ j ) { * jas_matrix_getref ( y , i , j ) = jas_matrix_get ( x , i , j ) ; } } return y ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * y ; jas_matind_t i ; jas_matind_t <S2SV_ModEnd> j ; y\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_write_message_fields_buffer ( wStream * s , NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( fields -> Len > 0 ) { Stream_SetPosition ( s , fields -> BufferOffset ) ; Stream_Write ( s , fields -> Buffer , fields -> Len ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3186\n\n```\nCWE-119 static int picolcd_raw_event ( struct hid_device * hdev , struct hid_report * report , u8 * raw_data , int size ) { struct picolcd_data * data = hid_get_drvdata ( hdev ) ; unsigned long flags ; int ret = 0 ; if ( ! data ) return 1 ; <S2SV_StartBug> if ( report -> id == REPORT_KEY_STATE ) { <S2SV_EndBug> if ( data -> input_keys ) ret = picolcd_raw_keypad ( data , report , raw_data + 1 , size - 1 ) ; } else if ( report -> id == REPORT_IR_DATA ) { ret = picolcd_raw_cir ( data , report , raw_data + 1 , size - 1 ) ; } else { spin_lock_irqsave ( & data -> lock , flags ) ; if ( data -> pending ) { memcpy ( data -> pending -> raw_data , raw_data + 1 , size - 1 ) ; data -> pending -> raw_size = size - 1 ; data -> pending -> in_report = report ; complete ( & data -> pending -> ready ) ; } spin_unlock_irqrestore ( & data -> lock , flags ) ; } picolcd_debug_raw_event ( data , hdev , report , raw_data , size ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( size > 64 ) { hid_warn ( hdev , \"invalid<S2SV_blank>size<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>for<S2SV_blank>picolcd<S2SV_blank>raw<S2SV_blank>event\\\\n\" , size ) ; return 0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_second_pass ( VP8_COMP * cpi ) { int tmp_q ; int frames_left = ( int ) ( cpi -> twopass . total_stats . count - cpi -> common . current_video_frame ) ; FIRSTPASS_STATS this_frame = { 0 } ; FIRSTPASS_STATS this_frame_copy ; double this_frame_intra_error ; double this_frame_coded_error ; int overhead_bits ; if ( ! cpi -> twopass . stats_in ) { return ; } vp8_clear_system_state ( ) ; if ( EOF == input_stats ( cpi , & this_frame ) ) return ; this_frame_intra_error = this_frame . intra_error ; this_frame_coded_error = this_frame . coded_error ; if ( cpi -> twopass . frames_to_key == 0 ) { <S2SV_StartBug> vpx_memcpy ( & this_frame_copy , & this_frame , sizeof ( this_frame ) ) ; <S2SV_EndBug> find_next_key_frame ( cpi , & this_frame_copy ) ; if ( cpi -> oxcf . error_resilient_mode ) { cpi -> twopass . gf_group_bits = cpi -> twopass . kf_group_bits ; cpi -> twopass . gf_group_error_left = ( int ) cpi -> twopass . kf_group_error_left ; cpi -> baseline_gf_interval = cpi -> twopass . frames_to_key ; cpi -> frames_till_gf_update_due = cpi -> baseline_gf_interval ; cpi -> source_alt_ref_pending = 0 ; } } if ( cpi -> frames_till_gf_update_due == 0 ) { <S2SV_StartBug> vpx_memcpy ( & this_frame_copy , & this_frame , sizeof ( this_frame ) ) ; <S2SV_EndBug> define_gf_group ( cpi , & this_frame_copy ) ; if ( cpi -> source_alt_ref_pending && ( cpi -> common . frame_type != KEY_FRAME ) ) { int bak = cpi -> per_frame_bandwidth ; <S2SV_StartBug> vpx_memcpy ( & this_frame_copy , & this_frame , sizeof ( this_frame ) ) ; <S2SV_EndBug> assign_std_frame_bits ( cpi , & this_frame_copy ) ; cpi -> per_frame_bandwidth = bak ; } } else { if ( cpi -> oxcf . error_resilient_mode ) { cpi -> frames_till_gf_update_due = cpi -> twopass . frames_to_key ; if ( cpi -> common . frame_type != KEY_FRAME ) { <S2SV_StartBug> vpx_memcpy ( & this_frame_copy , & this_frame , sizeof ( this_frame ) ) ; <S2SV_EndBug> assign_std_frame_bits ( cpi , & this_frame_copy ) ; } } else { <S2SV_StartBug> vpx_memcpy ( & this_frame_copy , & this_frame , sizeof ( this_frame ) ) ; <S2SV_EndBug> assign_std_frame_bits ( cpi , & this_frame_copy ) ; } } cpi -> twopass . this_iiratio = ( unsigned int ) ( this_frame_intra_error / DOUBLE_DIVIDE_CHECK ( this_frame_coded_error ) ) ; { FIRSTPASS_STATS next_frame ; if ( lookup_next_frame_stats ( cpi , & next_frame ) != EOF ) { cpi -> twopass . next_iiratio = ( unsigned int ) ( next_frame . intra_error / DOUBLE_DIVIDE_CHECK ( next_frame . coded_error ) ) ; } } cpi -> target_bandwidth = ( int ) ( cpi -> per_frame_bandwidth * cpi -> output_framerate ) ; if ( cpi -> target_bandwidth < 0 ) cpi -> target_bandwidth = 0 ; overhead_bits = ( int ) estimate_modemvcost ( cpi , & cpi -> twopass . total_left_stats ) ; if ( cpi -> common . current_video_frame == 0 ) { cpi -> twopass . est_max_qcorrection_factor = 1.0 ; if ( cpi -> oxcf . end_usage == USAGE_CONSTRAINED_QUALITY ) { int est_cq ; est_cq = estimate_cq ( cpi , & cpi -> twopass . total_left_stats , ( int ) ( cpi -> twopass . bits_left / frames_left ) , overhead_bits ) ; cpi -> cq_target_quality = cpi -> oxcf . cq_level ; if ( est_cq > cpi -> cq_target_quality ) cpi -> cq_target_quality = est_cq ; } cpi -> twopass . maxq_max_limit = cpi -> worst_quality ; cpi -> twopass . maxq_min_limit = cpi -> best_quality ; tmp_q = estimate_max_q ( cpi , & cpi -> twopass . total_left_stats , ( int ) ( cpi -> twopass . bits_left / frames_left ) , overhead_bits ) ; cpi -> twopass . maxq_max_limit = ( ( tmp_q + 32 ) < cpi -> worst_quality ) ? ( tmp_q + 32 ) : cpi -> worst_quality ; cpi -> twopass . maxq_min_limit = ( ( tmp_q - 32 ) > cpi -> best_quality ) ? ( tmp_q - 32 ) : cpi -> best_quality ; cpi -> active_worst_quality = tmp_q ; cpi -> ni_av_qi = tmp_q ; } else if ( ( cpi -> common . current_video_frame < ( ( ( unsigned int ) cpi -> twopass . total_stats . count * 255 ) >> 8 ) ) && ( ( cpi -> common . current_video_frame + cpi -> baseline_gf_interval ) < ( unsigned int ) cpi -> twopass . total_stats . count ) ) { if ( frames_left < 1 ) frames_left = 1 ; tmp_q = estimate_max_q ( cpi , & cpi -> twopass . total_left_stats , ( int ) ( cpi -> twopass . bits_left / frames_left ) , overhead_bits ) ; if ( tmp_q > cpi -> active_worst_quality ) cpi -> active_worst_quality ++ ; else if ( tmp_q < cpi -> active_worst_quality ) cpi -> active_worst_quality -- ; cpi -> active_worst_quality = ( ( cpi -> active_worst_quality * 3 ) + tmp_q + 2 ) / 4 ; } cpi -> twopass . frames_to_key -- ; subtract_stats ( & cpi -> twopass . total_left_stats , & this_frame ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { memcpy <S2SV_ModEnd> ( & this_frame_copy <S2SV_ModStart> 0 ) { memcpy <S2SV_ModEnd> ( & this_frame_copy <S2SV_ModStart> -> per_frame_bandwidth ; memcpy <S2SV_ModEnd> ( & this_frame_copy <S2SV_ModStart> KEY_FRAME ) { memcpy <S2SV_ModEnd> ( & this_frame_copy <S2SV_ModStart> } else { memcpy <S2SV_ModEnd> ( & this_frame_copy\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11042\n\n```\nCWE-125 static BOOL update_read_icon_info ( wStream * s , ICON_INFO * iconInfo ) { BYTE * newBitMask ; if ( Stream_GetRemainingLength ( s ) < 8 ) return FALSE ; Stream_Read_UINT16 ( s , iconInfo -> cacheEntry ) ; Stream_Read_UINT8 ( s , iconInfo -> cacheId ) ; Stream_Read_UINT8 ( s , iconInfo -> bpp ) ; if ( ( iconInfo -> bpp < 1 ) || ( iconInfo -> bpp > 32 ) ) { WLog_ERR ( TAG , \"invalid<S2SV_blank>bpp<S2SV_blank>value<S2SV_blank>%\" PRIu32 \"\" , iconInfo -> bpp ) ; return FALSE ; } Stream_Read_UINT16 ( s , iconInfo -> width ) ; Stream_Read_UINT16 ( s , iconInfo -> height ) ; switch ( iconInfo -> bpp ) { case 1 : case 4 : case 8 : if ( Stream_GetRemainingLength ( s ) < 2 ) return FALSE ; Stream_Read_UINT16 ( s , iconInfo -> cbColorTable ) ; break ; default : iconInfo -> cbColorTable = 0 ; break ; } if ( Stream_GetRemainingLength ( s ) < 4 ) return FALSE ; Stream_Read_UINT16 ( s , iconInfo -> cbBitsMask ) ; Stream_Read_UINT16 ( s , iconInfo -> cbBitsColor ) ; <S2SV_StartBug> if ( Stream_GetRemainingLength ( s ) < iconInfo -> cbBitsMask + iconInfo -> cbBitsColor ) <S2SV_EndBug> return FALSE ; newBitMask = ( BYTE * ) realloc ( iconInfo -> bitsMask , iconInfo -> cbBitsMask ) ; if ( ! newBitMask ) { free ( iconInfo -> bitsMask ) ; iconInfo -> bitsMask = NULL ; return FALSE ; } iconInfo -> bitsMask = newBitMask ; Stream_Read ( s , iconInfo -> bitsMask , iconInfo -> cbBitsMask ) ; if ( iconInfo -> colorTable == NULL ) { if ( iconInfo -> cbColorTable ) { iconInfo -> colorTable = ( BYTE * ) malloc ( iconInfo -> cbColorTable ) ; if ( ! iconInfo -> colorTable ) return FALSE ; } } else if ( iconInfo -> cbColorTable ) { BYTE * new_tab ; new_tab = ( BYTE * ) realloc ( iconInfo -> colorTable , iconInfo -> cbColorTable ) ; if ( ! new_tab ) { free ( iconInfo -> colorTable ) ; iconInfo -> colorTable = NULL ; return FALSE ; } iconInfo -> colorTable = new_tab ; } else { free ( iconInfo -> colorTable ) ; iconInfo -> colorTable = NULL ; } if ( iconInfo -> colorTable ) <S2SV_StartBug> Stream_Read ( s , iconInfo -> colorTable , iconInfo -> cbColorTable ) ; <S2SV_EndBug> <S2SV_StartBug> newBitMask = ( BYTE * ) realloc ( iconInfo -> bitsColor , iconInfo -> cbBitsColor ) ; <S2SV_EndBug> if ( ! newBitMask ) { free ( iconInfo -> bitsColor ) ; iconInfo -> bitsColor = NULL ; return FALSE ; } iconInfo -> bitsColor = newBitMask ; <S2SV_StartBug> Stream_Read ( s , iconInfo -> bitsColor , iconInfo -> cbBitsColor ) ; <S2SV_EndBug> return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cbBitsColor ) ; newBitMask = ( BYTE * ) realloc ( iconInfo -> bitsMask , iconInfo -> cbBitsMask ) ; if ( ! newBitMask ) { free ( iconInfo -> bitsMask ) ; iconInfo -> bitsMask = NULL ; return FALSE ; } iconInfo -> bitsMask = newBitMask ; <S2SV_ModStart> iconInfo -> cbBitsMask ) return FALSE <S2SV_ModEnd> ; Stream_Read ( <S2SV_ModStart> -> colorTable ) { if ( Stream_GetRemainingLength ( s ) < iconInfo -> cbColorTable ) return FALSE ; <S2SV_ModStart> cbColorTable ) ; } <S2SV_ModStart> = newBitMask ; if ( Stream_GetRemainingLength ( s ) < iconInfo -> cbBitsColor ) return FALSE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16227\n\n```\nCWE-125 static u_int ieee802_11_print ( netdissect_options * ndo , const u_char * p , u_int length , u_int orig_caplen , int pad , u_int fcslen ) { uint16_t fc ; u_int caplen , hdrlen , meshdrlen ; struct lladdr_info src , dst ; int llc_hdrlen ; caplen = orig_caplen ; if ( length < fcslen ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return caplen ; } length -= fcslen ; if ( caplen > length ) { fcslen = caplen - length ; caplen -= fcslen ; ndo -> ndo_snapend -= fcslen ; } if ( caplen < IEEE802_11_FC_LEN ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return orig_caplen ; } fc = EXTRACT_LE_16BITS ( p ) ; hdrlen = extract_header_length ( ndo , fc ) ; if ( hdrlen == 0 ) { return ( 0 ) ; } if ( pad ) hdrlen = roundup2 ( hdrlen , 4 ) ; if ( ndo -> ndo_Hflag && FC_TYPE ( fc ) == T_DATA && DATA_FRAME_IS_QOS ( FC_SUBTYPE ( fc ) ) ) { <S2SV_StartBug> meshdrlen = extract_mesh_header_length ( p + hdrlen ) ; <S2SV_EndBug> hdrlen += meshdrlen ; } else meshdrlen = 0 ; if ( caplen < hdrlen ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return hdrlen ; } if ( ndo -> ndo_eflag ) ieee_802_11_hdr_print ( ndo , fc , p , hdrlen , meshdrlen ) ; length -= hdrlen ; caplen -= hdrlen ; p += hdrlen ; src . addr_string = etheraddr_string ; dst . addr_string = etheraddr_string ; switch ( FC_TYPE ( fc ) ) { case T_MGMT : get_mgmt_src_dst_mac ( p - hdrlen , & src . addr , & dst . addr ) ; if ( ! mgmt_body_print ( ndo , fc , src . addr , p , length ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return hdrlen ; } break ; case T_CTRL : if ( ! ctrl_body_print ( ndo , fc , p - hdrlen ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return hdrlen ; } break ; case T_DATA : if ( DATA_FRAME_IS_NULL ( FC_SUBTYPE ( fc ) ) ) return hdrlen ; if ( FC_PROTECTED ( fc ) ) { ND_PRINT ( ( ndo , \"Data\" ) ) ; if ( ! wep_print ( ndo , p ) ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return hdrlen ; } } else { get_data_src_dst_mac ( fc , p - hdrlen , & src . addr , & dst . addr ) ; llc_hdrlen = llc_print ( ndo , p , length , caplen , & src , & dst ) ; if ( llc_hdrlen < 0 ) { if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , caplen ) ; llc_hdrlen = - llc_hdrlen ; } hdrlen += llc_hdrlen ; } break ; default : break ; } return hdrlen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( caplen < hdrlen + 1 ) { ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return hdrlen ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16996\n\n```\nCWE-119 static int check_alu_op ( struct bpf_verifier_env * env , struct bpf_insn * insn ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; int err ; if ( opcode == BPF_END || opcode == BPF_NEG ) { if ( opcode == BPF_NEG ) { if ( BPF_SRC ( insn -> code ) != 0 || insn -> src_reg != BPF_REG_0 || insn -> off != 0 || insn -> imm != 0 ) { verbose ( env , \"BPF_NEG<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 || ( insn -> imm != 16 && insn -> imm != 32 && insn -> imm != 64 ) || BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { verbose ( env , \"BPF_END<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , insn -> dst_reg ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>prohibited\\\\n\" , insn -> dst_reg ) ; return - EACCES ; } err = check_reg_arg ( env , insn -> dst_reg , DST_OP ) ; if ( err ) return err ; } else if ( opcode == BPF_MOV ) { if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 || insn -> off != 0 ) { verbose ( env , \"BPF_MOV<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 ) { verbose ( env , \"BPF_MOV<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , DST_OP ) ; if ( err ) return err ; if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { regs [ insn -> dst_reg ] = regs [ insn -> src_reg ] ; regs [ insn -> dst_reg ] . live |= REG_LIVE_WRITTEN ; } else { if ( is_pointer_value ( env , insn -> src_reg ) ) { verbose ( env , \"R%d<S2SV_blank>partial<S2SV_blank>copy<S2SV_blank>of<S2SV_blank>pointer\\\\n\" , insn -> src_reg ) ; return - EACCES ; } mark_reg_unknown ( env , regs , insn -> dst_reg ) ; <S2SV_StartBug> regs [ insn -> dst_reg ] . var_off = tnum_cast ( <S2SV_EndBug> regs [ insn -> dst_reg ] . var_off , 4 ) ; <S2SV_StartBug> __update_reg_bounds ( & regs [ insn -> dst_reg ] ) ; <S2SV_EndBug> } } else { regs [ insn -> dst_reg ] . type = SCALAR_VALUE ; if ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { __mark_reg_known ( regs + insn -> dst_reg , insn -> imm ) ; } else { __mark_reg_known ( regs + insn -> dst_reg , ( u32 ) insn -> imm ) ; } } } else if ( opcode > BPF_END ) { verbose ( env , \"invalid<S2SV_blank>BPF_ALU<S2SV_blank>opcode<S2SV_blank>%x\\\\n\" , opcode ) ; return - EINVAL ; } else { if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 || insn -> off != 0 ) { verbose ( env , \"BPF_ALU<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 ) { verbose ( env , \"BPF_ALU<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( ( opcode == BPF_MOD || opcode == BPF_DIV ) && BPF_SRC ( insn -> code ) == BPF_K && insn -> imm == 0 ) { verbose ( env , \"div<S2SV_blank>by<S2SV_blank>zero\\\\n\" ) ; return - EINVAL ; } if ( ( opcode == BPF_LSH || opcode == BPF_RSH || opcode == BPF_ARSH ) && BPF_SRC ( insn -> code ) == BPF_K ) { int size = BPF_CLASS ( insn -> code ) == BPF_ALU64 ? 64 : 32 ; if ( insn -> imm < 0 || insn -> imm >= size ) { verbose ( env , \"invalid<S2SV_blank>shift<S2SV_blank>%d\\\\n\" , insn -> imm ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; return adjust_reg_min_max_vals ( env , insn ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dst_reg ) ; coerce_reg_to_size <S2SV_ModEnd> ( & regs <S2SV_ModStart> -> dst_reg ] , 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9211\n\n```\nCWE-476 static int crypto_skcipher_init_tfm ( struct crypto_tfm * tfm ) { struct crypto_skcipher * skcipher = __crypto_skcipher_cast ( tfm ) ; struct skcipher_alg * alg = crypto_skcipher_alg ( skcipher ) ; if ( tfm -> __crt_alg -> cra_type == & crypto_blkcipher_type ) return crypto_init_skcipher_ops_blkcipher ( tfm ) ; if ( tfm -> __crt_alg -> cra_type == & crypto_ablkcipher_type || tfm -> __crt_alg -> cra_type == & crypto_givcipher_type ) return crypto_init_skcipher_ops_ablkcipher ( tfm ) ; <S2SV_StartBug> skcipher -> setkey = alg -> setkey ; <S2SV_EndBug> skcipher -> encrypt = alg -> encrypt ; skcipher -> decrypt = alg -> decrypt ; skcipher -> ivsize = alg -> ivsize ; skcipher -> keysize = alg -> max_keysize ; if ( alg -> exit ) skcipher -> base . exit = crypto_skcipher_exit_tfm ; if ( alg -> init ) return alg -> init ( skcipher ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> setkey = skcipher_setkey <S2SV_ModEnd> ; skcipher ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_fwht4x4_c ( const int16_t * input , int16_t * output , int stride ) { <S2SV_EndBug> int i ; <S2SV_StartBug> int a1 , b1 , c1 , d1 , e1 ; <S2SV_EndBug> <S2SV_StartBug> const int16_t * ip = input ; <S2SV_EndBug> <S2SV_StartBug> int16_t * op = output ; <S2SV_EndBug> for ( i = 0 ; i < 4 ; i ++ ) { <S2SV_StartBug> a1 = ip [ 0 * stride ] ; <S2SV_EndBug> b1 = ip [ 1 * stride ] ; c1 = ip [ 2 * stride ] ; <S2SV_StartBug> d1 = ip [ 3 * stride ] ; <S2SV_EndBug> a1 += b1 ; d1 = d1 - c1 ; e1 = ( a1 - d1 ) >> 1 ; b1 = e1 - b1 ; c1 = e1 - c1 ; a1 -= c1 ; d1 += b1 ; <S2SV_StartBug> op [ 0 ] = a1 ; <S2SV_EndBug> op [ 4 ] = c1 ; <S2SV_StartBug> op [ 8 ] = d1 ; <S2SV_EndBug> <S2SV_StartBug> op [ 12 ] = b1 ; <S2SV_EndBug> ip ++ ; op ++ ; } ip = output ; op = output ; for ( i = 0 ; i < 4 ; i ++ ) { a1 = ip [ 0 ] ; b1 = ip [ 1 ] ; c1 = ip [ 2 ] ; d1 = ip [ 3 ] ; a1 += b1 ; d1 -= c1 ; e1 = ( a1 - d1 ) >> 1 ; b1 = e1 - b1 ; c1 = e1 - c1 ; a1 -= c1 ; d1 += b1 ; <S2SV_StartBug> op [ 0 ] = a1 * UNIT_QUANT_FACTOR ; <S2SV_EndBug> <S2SV_StartBug> op [ 1 ] = c1 * UNIT_QUANT_FACTOR ; <S2SV_EndBug> <S2SV_StartBug> op [ 2 ] = d1 * UNIT_QUANT_FACTOR ; <S2SV_EndBug> <S2SV_StartBug> op [ 3 ] = b1 * UNIT_QUANT_FACTOR ; <S2SV_EndBug> ip += 4 ; op += 4 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * input , tran_low_t <S2SV_ModEnd> * output , <S2SV_ModStart> int i ; tran_high_t <S2SV_ModEnd> a1 , b1 <S2SV_ModStart> const int16_t * ip_pass0 <S2SV_ModEnd> = input ; <S2SV_ModStart> = input ; const tran_low_t * ip = NULL ; tran_low_t <S2SV_ModEnd> * op = <S2SV_ModStart> { a1 = ip_pass0 [ 0 * stride ] ; b1 = ip_pass0 [ 1 * stride ] ; c1 = ip_pass0 <S2SV_ModEnd> [ 2 * <S2SV_ModStart> ; d1 = ip_pass0 <S2SV_ModEnd> [ 3 * <S2SV_ModStart> 0 ] = ( tran_low_t ) a1 ; op [ 4 ] = ( tran_low_t ) <S2SV_ModEnd> c1 ; op <S2SV_ModStart> 8 ] = ( tran_low_t ) <S2SV_ModStart> 12 ] = ( tran_low_t ) b1 ; ip_pass0 <S2SV_ModEnd> ++ ; op <S2SV_ModStart> 0 ] = ( tran_low_t ) ( <S2SV_ModStart> a1 * UNIT_QUANT_FACTOR ) ; op [ 1 ] = ( tran_low_t ) ( <S2SV_ModEnd> c1 * UNIT_QUANT_FACTOR <S2SV_ModStart> c1 * UNIT_QUANT_FACTOR ) <S2SV_ModStart> 2 ] = ( tran_low_t ) ( <S2SV_ModStart> d1 * UNIT_QUANT_FACTOR ) <S2SV_ModStart> 3 ] = ( tran_low_t ) ( <S2SV_ModStart> b1 * UNIT_QUANT_FACTOR )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8543\n\n```\nCWE-000 static int dn_create ( struct net * net , struct socket * sock , int protocol , int kern ) { <S2SV_StartBug> struct sock * sk ; <S2SV_EndBug> if ( ! net_eq ( net , & init_net ) ) return - EAFNOSUPPORT ; switch ( sock -> type ) { case SOCK_SEQPACKET : if ( protocol != DNPROTO_NSP ) return - EPROTONOSUPPORT ; break ; case SOCK_STREAM : break ; default : return - ESOCKTNOSUPPORT ; } if ( ( sk = dn_alloc_sock ( net , sock , GFP_KERNEL , kern ) ) == NULL ) return - ENOBUFS ; sk -> sk_protocol = protocol ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock * sk ; if ( protocol < 0 || protocol > SK_PROTOCOL_MAX ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 int key_reject_and_link ( struct key * key , unsigned timeout , unsigned error , struct key * keyring , struct key * authkey ) { struct assoc_array_edit * edit ; struct timespec now ; int ret , awaken , link_ret = 0 ; key_check ( key ) ; key_check ( keyring ) ; awaken = 0 ; ret = - EBUSY ; if ( keyring ) { if ( keyring -> restrict_link ) return - EPERM ; link_ret = __key_link_begin ( keyring , & key -> index_key , & edit ) ; } mutex_lock ( & key_construction_mutex ) ; <S2SV_StartBug> if ( ! test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) { <S2SV_EndBug> atomic_inc ( & key -> user -> nikeys ) ; <S2SV_StartBug> key -> reject_error = - error ; <S2SV_EndBug> smp_wmb ( ) ; set_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ; set_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ; now = current_kernel_time ( ) ; key -> expiry = now . tv_sec + timeout ; key_schedule_gc ( key -> expiry + key_gc_delay ) ; if ( test_and_clear_bit ( KEY_FLAG_USER_CONSTRUCT , & key -> flags ) ) awaken = 1 ; ret = 0 ; if ( keyring && link_ret == 0 ) __key_link ( key , & edit ) ; if ( authkey ) key_revoke ( authkey ) ; } mutex_unlock ( & key_construction_mutex ) ; if ( keyring && link_ret == 0 ) __key_link_end ( keyring , & key -> index_key , edit ) ; if ( awaken ) wake_up_bit ( & key -> flags , KEY_FLAG_USER_CONSTRUCT ) ; return ret == 0 ? link_ret : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key -> state == KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) { atomic_inc <S2SV_ModStart> nikeys ) ; mark_key_instantiated ( key , - error <S2SV_ModEnd> ) ; now\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13217\n\n```\nCWE-119 static int start_decoder ( vorb * f ) { uint8 header [ 6 ] , x , y ; int len , i , j , k , max_submaps = 0 ; int longest_floorlist = 0 ; if ( ! start_page ( f ) ) return FALSE ; if ( ! ( f -> page_flag & PAGEFLAG_first_page ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> page_flag & PAGEFLAG_last_page ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> page_flag & PAGEFLAG_continued_packet ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> segment_count != 1 ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> segments [ 0 ] != 30 ) { if ( f -> segments [ 0 ] == 64 && getn ( f , header , 6 ) && header [ 0 ] == 'f' && header [ 1 ] == 'i' && header [ 2 ] == 's' && header [ 3 ] == 'h' && header [ 4 ] == 'e' && header [ 5 ] == 'a' && get8 ( f ) == 'd' && get8 ( f ) == '\\\\0' ) return error ( f , VORBIS_ogg_skeleton_not_supported ) ; else return error ( f , VORBIS_invalid_first_page ) ; } if ( get8 ( f ) != VORBIS_packet_id ) return error ( f , VORBIS_invalid_first_page ) ; if ( ! getn ( f , header , 6 ) ) return error ( f , VORBIS_unexpected_eof ) ; if ( ! vorbis_validate ( header ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( get32 ( f ) != 0 ) return error ( f , VORBIS_invalid_first_page ) ; f -> channels = get8 ( f ) ; if ( ! f -> channels ) return error ( f , VORBIS_invalid_first_page ) ; if ( f -> channels > STB_VORBIS_MAX_CHANNELS ) return error ( f , VORBIS_too_many_channels ) ; f -> sample_rate = get32 ( f ) ; if ( ! f -> sample_rate ) return error ( f , VORBIS_invalid_first_page ) ; get32 ( f ) ; get32 ( f ) ; get32 ( f ) ; x = get8 ( f ) ; { int log0 , log1 ; log0 = x & 15 ; log1 = x >> 4 ; f -> blocksize_0 = 1 << log0 ; f -> blocksize_1 = 1 << log1 ; if ( log0 < 6 || log0 > 13 ) return error ( f , VORBIS_invalid_setup ) ; if ( log1 < 6 || log1 > 13 ) return error ( f , VORBIS_invalid_setup ) ; if ( log0 > log1 ) return error ( f , VORBIS_invalid_setup ) ; } x = get8 ( f ) ; if ( ! ( x & 1 ) ) return error ( f , VORBIS_invalid_first_page ) ; if ( ! start_page ( f ) ) return FALSE ; if ( ! start_packet ( f ) ) return FALSE ; do { len = next_segment ( f ) ; skip ( f , len ) ; f -> bytes_in_seg = 0 ; } while ( len ) ; if ( ! start_packet ( f ) ) return FALSE ; # ifndef STB_VORBIS_NO_PUSHDATA_API if ( IS_PUSH_MODE ( f ) ) { if ( ! is_whole_packet_present ( f , TRUE ) ) { if ( f -> error == VORBIS_invalid_stream ) f -> error = VORBIS_invalid_setup ; return FALSE ; } } # endif crc32_init ( ) ; if ( get8_packet ( f ) != VORBIS_packet_setup ) return error ( f , VORBIS_invalid_setup ) ; for ( i = 0 ; i < 6 ; ++ i ) header [ i ] = get8_packet ( f ) ; if ( ! vorbis_validate ( header ) ) return error ( f , VORBIS_invalid_setup ) ; f -> codebook_count = get_bits ( f , 8 ) + 1 ; f -> codebooks = ( Codebook * ) setup_malloc ( f , sizeof ( * f -> codebooks ) * f -> codebook_count ) ; if ( f -> codebooks == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> codebooks , 0 , sizeof ( * f -> codebooks ) * f -> codebook_count ) ; for ( i = 0 ; i < f -> codebook_count ; ++ i ) { uint32 * values ; int ordered , sorted_count ; int total = 0 ; uint8 * lengths ; Codebook * c = f -> codebooks + i ; CHECK ( f ) ; x = get_bits ( f , 8 ) ; if ( x != 0x42 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; if ( x != 0x43 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; if ( x != 0x56 ) return error ( f , VORBIS_invalid_setup ) ; x = get_bits ( f , 8 ) ; c -> dimensions = ( get_bits ( f , 8 ) << 8 ) + x ; x = get_bits ( f , 8 ) ; y = get_bits ( f , 8 ) ; c -> entries = ( get_bits ( f , 8 ) << 16 ) + ( y << 8 ) + x ; ordered = get_bits ( f , 1 ) ; c -> sparse = ordered ? 0 : get_bits ( f , 1 ) ; if ( c -> dimensions == 0 && c -> entries != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( c -> sparse ) lengths = ( uint8 * ) setup_temp_malloc ( f , c -> entries ) ; else lengths = c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> entries ) ; if ( ! lengths ) return error ( f , VORBIS_outofmem ) ; if ( ordered ) { int current_entry = 0 ; int current_length = get_bits ( f , 5 ) + 1 ; while ( current_entry < c -> entries ) { int limit = c -> entries - current_entry ; int n = get_bits ( f , ilog ( limit ) ) ; <S2SV_StartBug> if ( current_entry + n > ( int ) c -> entries ) { return error ( f , VORBIS_invalid_setup ) ; } <S2SV_EndBug> memset ( lengths + current_entry , current_length , n ) ; current_entry += n ; ++ current_length ; } } else { for ( j = 0 ; j < c -> entries ; ++ j ) { int present = c -> sparse ? get_bits ( f , 1 ) : 1 ; if ( present ) { lengths [ j ] = get_bits ( f , 5 ) + 1 ; ++ total ; if ( lengths [ j ] == 32 ) return error ( f , VORBIS_invalid_setup ) ; } else { lengths [ j ] = NO_CODE ; } } } if ( c -> sparse && total >= c -> entries >> 2 ) { if ( c -> entries > ( int ) f -> setup_temp_memory_required ) f -> setup_temp_memory_required = c -> entries ; c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> entries ) ; if ( c -> codeword_lengths == NULL ) return error ( f , VORBIS_outofmem ) ; memcpy ( c -> codeword_lengths , lengths , c -> entries ) ; setup_temp_free ( f , lengths , c -> entries ) ; lengths = c -> codeword_lengths ; c -> sparse = 0 ; } if ( c -> sparse ) { sorted_count = total ; } else { sorted_count = 0 ; # ifndef STB_VORBIS_NO_HUFFMAN_BINARY_SEARCH for ( j = 0 ; j < c -> entries ; ++ j ) if ( lengths [ j ] > STB_VORBIS_FAST_HUFFMAN_LENGTH && lengths [ j ] != NO_CODE ) ++ sorted_count ; # endif } c -> sorted_entries = sorted_count ; values = NULL ; CHECK ( f ) ; if ( ! c -> sparse ) { c -> codewords = ( uint32 * ) setup_malloc ( f , sizeof ( c -> codewords [ 0 ] ) * c -> entries ) ; if ( ! c -> codewords ) return error ( f , VORBIS_outofmem ) ; } else { unsigned int size ; if ( c -> sorted_entries ) { c -> codeword_lengths = ( uint8 * ) setup_malloc ( f , c -> sorted_entries ) ; if ( ! c -> codeword_lengths ) return error ( f , VORBIS_outofmem ) ; c -> codewords = ( uint32 * ) setup_temp_malloc ( f , sizeof ( * c -> codewords ) * c -> sorted_entries ) ; if ( ! c -> codewords ) return error ( f , VORBIS_outofmem ) ; values = ( uint32 * ) setup_temp_malloc ( f , sizeof ( * values ) * c -> sorted_entries ) ; if ( ! values ) return error ( f , VORBIS_outofmem ) ; } size = c -> entries + ( sizeof ( * c -> codewords ) + sizeof ( * values ) ) * c -> sorted_entries ; if ( size > f -> setup_temp_memory_required ) f -> setup_temp_memory_required = size ; } if ( ! compute_codewords ( c , lengths , c -> entries , values ) ) { if ( c -> sparse ) setup_temp_free ( f , values , 0 ) ; return error ( f , VORBIS_invalid_setup ) ; } if ( c -> sorted_entries ) { c -> sorted_codewords = ( uint32 * ) setup_malloc ( f , sizeof ( * c -> sorted_codewords ) * ( c -> sorted_entries + 1 ) ) ; if ( c -> sorted_codewords == NULL ) return error ( f , VORBIS_outofmem ) ; c -> sorted_values = ( int * ) setup_malloc ( f , sizeof ( * c -> sorted_values ) * ( c -> sorted_entries + 1 ) ) ; if ( c -> sorted_values == NULL ) return error ( f , VORBIS_outofmem ) ; ++ c -> sorted_values ; c -> sorted_values [ - 1 ] = - 1 ; compute_sorted_huffman ( c , lengths , values ) ; } if ( c -> sparse ) { setup_temp_free ( f , values , sizeof ( * values ) * c -> sorted_entries ) ; setup_temp_free ( f , c -> codewords , sizeof ( * c -> codewords ) * c -> sorted_entries ) ; setup_temp_free ( f , lengths , c -> entries ) ; c -> codewords = NULL ; } compute_accelerated_huffman ( c ) ; CHECK ( f ) ; c -> lookup_type = get_bits ( f , 4 ) ; if ( c -> lookup_type > 2 ) return error ( f , VORBIS_invalid_setup ) ; if ( c -> lookup_type > 0 ) { uint16 * mults ; c -> minimum_value = float32_unpack ( get_bits ( f , 32 ) ) ; c -> delta_value = float32_unpack ( get_bits ( f , 32 ) ) ; c -> value_bits = get_bits ( f , 4 ) + 1 ; c -> sequence_p = get_bits ( f , 1 ) ; if ( c -> lookup_type == 1 ) { <S2SV_StartBug> c -> lookup_values = lookup1_values ( c -> entries , c -> dimensions ) ; <S2SV_EndBug> } else { c -> lookup_values = c -> entries * c -> dimensions ; } if ( c -> lookup_values == 0 ) return error ( f , VORBIS_invalid_setup ) ; mults = ( uint16 * ) setup_temp_malloc ( f , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; if ( mults == NULL ) return error ( f , VORBIS_outofmem ) ; for ( j = 0 ; j < ( int ) c -> lookup_values ; ++ j ) { int q = get_bits ( f , c -> value_bits ) ; if ( q == EOP ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_invalid_setup ) ; } mults [ j ] = q ; } # ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK if ( c -> lookup_type == 1 ) { int len , sparse = c -> sparse ; float last = 0 ; if ( sparse ) { if ( c -> sorted_entries == 0 ) goto skip ; c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> sorted_entries * c -> dimensions ) ; } else c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> entries * c -> dimensions ) ; if ( c -> multiplicands == NULL ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_outofmem ) ; } len = sparse ? c -> sorted_entries : c -> entries ; for ( j = 0 ; j < len ; ++ j ) { unsigned int z = sparse ? c -> sorted_values [ j ] : j ; unsigned int div = 1 ; for ( k = 0 ; k < c -> dimensions ; ++ k ) { int off = ( z / div ) % c -> lookup_values ; float val = mults [ off ] ; val = mults [ off ] * c -> delta_value + c -> minimum_value + last ; c -> multiplicands [ j * c -> dimensions + k ] = val ; if ( c -> sequence_p ) last = val ; if ( k + 1 < c -> dimensions ) { if ( div > UINT_MAX / ( unsigned int ) c -> lookup_values ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_invalid_setup ) ; } div *= c -> lookup_values ; } } } c -> lookup_type = 2 ; } else # endif { float last = 0 ; CHECK ( f ) ; c -> multiplicands = ( codetype * ) setup_malloc ( f , sizeof ( c -> multiplicands [ 0 ] ) * c -> lookup_values ) ; if ( c -> multiplicands == NULL ) { setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; return error ( f , VORBIS_outofmem ) ; } for ( j = 0 ; j < ( int ) c -> lookup_values ; ++ j ) { float val = mults [ j ] * c -> delta_value + c -> minimum_value + last ; c -> multiplicands [ j ] = val ; if ( c -> sequence_p ) last = val ; } } # ifndef STB_VORBIS_DIVIDES_IN_CODEBOOK skip : ; # endif setup_temp_free ( f , mults , sizeof ( mults [ 0 ] ) * c -> lookup_values ) ; CHECK ( f ) ; } CHECK ( f ) ; } x = get_bits ( f , 6 ) + 1 ; for ( i = 0 ; i < x ; ++ i ) { uint32 z = get_bits ( f , 16 ) ; if ( z != 0 ) return error ( f , VORBIS_invalid_setup ) ; } f -> floor_count = get_bits ( f , 6 ) + 1 ; f -> floor_config = ( Floor * ) setup_malloc ( f , f -> floor_count * sizeof ( * f -> floor_config ) ) ; if ( f -> floor_config == NULL ) return error ( f , VORBIS_outofmem ) ; for ( i = 0 ; i < f -> floor_count ; ++ i ) { f -> floor_types [ i ] = get_bits ( f , 16 ) ; if ( f -> floor_types [ i ] > 1 ) return error ( f , VORBIS_invalid_setup ) ; if ( f -> floor_types [ i ] == 0 ) { Floor0 * g = & f -> floor_config [ i ] . floor0 ; g -> order = get_bits ( f , 8 ) ; g -> rate = get_bits ( f , 16 ) ; g -> bark_map_size = get_bits ( f , 16 ) ; g -> amplitude_bits = get_bits ( f , 6 ) ; g -> amplitude_offset = get_bits ( f , 8 ) ; g -> number_of_books = get_bits ( f , 4 ) + 1 ; for ( j = 0 ; j < g -> number_of_books ; ++ j ) g -> book_list [ j ] = get_bits ( f , 8 ) ; return error ( f , VORBIS_feature_not_supported ) ; } else { stbv__floor_ordering p [ 31 * 8 + 2 ] ; Floor1 * g = & f -> floor_config [ i ] . floor1 ; int max_class = - 1 ; g -> partitions = get_bits ( f , 5 ) ; for ( j = 0 ; j < g -> partitions ; ++ j ) { g -> partition_class_list [ j ] = get_bits ( f , 4 ) ; if ( g -> partition_class_list [ j ] > max_class ) max_class = g -> partition_class_list [ j ] ; } for ( j = 0 ; j <= max_class ; ++ j ) { g -> class_dimensions [ j ] = get_bits ( f , 3 ) + 1 ; g -> class_subclasses [ j ] = get_bits ( f , 2 ) ; if ( g -> class_subclasses [ j ] ) { g -> class_masterbooks [ j ] = get_bits ( f , 8 ) ; if ( g -> class_masterbooks [ j ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } for ( k = 0 ; k < 1 << g -> class_subclasses [ j ] ; ++ k ) { g -> subclass_books [ j ] [ k ] = get_bits ( f , 8 ) - 1 ; if ( g -> subclass_books [ j ] [ k ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } } g -> floor1_multiplier = get_bits ( f , 2 ) + 1 ; g -> rangebits = get_bits ( f , 4 ) ; g -> Xlist [ 0 ] = 0 ; g -> Xlist [ 1 ] = 1 << g -> rangebits ; g -> values = 2 ; for ( j = 0 ; j < g -> partitions ; ++ j ) { int c = g -> partition_class_list [ j ] ; for ( k = 0 ; k < g -> class_dimensions [ c ] ; ++ k ) { g -> Xlist [ g -> values ] = get_bits ( f , g -> rangebits ) ; ++ g -> values ; } } for ( j = 0 ; j < g -> values ; ++ j ) { p [ j ] . x = g -> Xlist [ j ] ; p [ j ] . id = j ; } qsort ( p , g -> values , sizeof ( p [ 0 ] ) , point_compare ) ; <S2SV_StartBug> for ( j = 0 ; j < g -> values ; ++ j ) <S2SV_EndBug> g -> sorted_order [ j ] = ( uint8 ) p [ j ] . id ; for ( j = 2 ; j < g -> values ; ++ j ) { int low , hi ; neighbors ( g -> Xlist , j , & low , & hi ) ; g -> neighbors [ j ] [ 0 ] = low ; g -> neighbors [ j ] [ 1 ] = hi ; } if ( g -> values > longest_floorlist ) longest_floorlist = g -> values ; } } f -> residue_count = get_bits ( f , 6 ) + 1 ; f -> residue_config = ( Residue * ) setup_malloc ( f , f -> residue_count * sizeof ( f -> residue_config [ 0 ] ) ) ; if ( f -> residue_config == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> residue_config , 0 , f -> residue_count * sizeof ( f -> residue_config [ 0 ] ) ) ; for ( i = 0 ; i < f -> residue_count ; ++ i ) { uint8 residue_cascade [ 64 ] ; Residue * r = f -> residue_config + i ; f -> residue_types [ i ] = get_bits ( f , 16 ) ; if ( f -> residue_types [ i ] > 2 ) return error ( f , VORBIS_invalid_setup ) ; r -> begin = get_bits ( f , 24 ) ; r -> end = get_bits ( f , 24 ) ; if ( r -> end < r -> begin ) return error ( f , VORBIS_invalid_setup ) ; r -> part_size = get_bits ( f , 24 ) + 1 ; r -> classifications = get_bits ( f , 6 ) + 1 ; r -> classbook = get_bits ( f , 8 ) ; if ( r -> classbook >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; for ( j = 0 ; j < r -> classifications ; ++ j ) { uint8 high_bits = 0 ; uint8 low_bits = get_bits ( f , 3 ) ; if ( get_bits ( f , 1 ) ) high_bits = get_bits ( f , 5 ) ; residue_cascade [ j ] = high_bits * 8 + low_bits ; } r -> residue_books = ( short ( * ) [ 8 ] ) setup_malloc ( f , sizeof ( r -> residue_books [ 0 ] ) * r -> classifications ) ; if ( r -> residue_books == NULL ) return error ( f , VORBIS_outofmem ) ; for ( j = 0 ; j < r -> classifications ; ++ j ) { for ( k = 0 ; k < 8 ; ++ k ) { if ( residue_cascade [ j ] & ( 1 << k ) ) { r -> residue_books [ j ] [ k ] = get_bits ( f , 8 ) ; if ( r -> residue_books [ j ] [ k ] >= f -> codebook_count ) return error ( f , VORBIS_invalid_setup ) ; } else { r -> residue_books [ j ] [ k ] = - 1 ; } } } r -> classdata = ( uint8 * * ) setup_malloc ( f , sizeof ( * r -> classdata ) * f -> codebooks [ r -> classbook ] . entries ) ; if ( ! r -> classdata ) return error ( f , VORBIS_outofmem ) ; memset ( r -> classdata , 0 , sizeof ( * r -> classdata ) * f -> codebooks [ r -> classbook ] . entries ) ; for ( j = 0 ; j < f -> codebooks [ r -> classbook ] . entries ; ++ j ) { int classwords = f -> codebooks [ r -> classbook ] . dimensions ; int temp = j ; r -> classdata [ j ] = ( uint8 * ) setup_malloc ( f , sizeof ( r -> classdata [ j ] [ 0 ] ) * classwords ) ; if ( r -> classdata [ j ] == NULL ) return error ( f , VORBIS_outofmem ) ; for ( k = classwords - 1 ; k >= 0 ; -- k ) { r -> classdata [ j ] [ k ] = temp % r -> classifications ; temp /= r -> classifications ; } } } f -> mapping_count = get_bits ( f , 6 ) + 1 ; f -> mapping = ( Mapping * ) setup_malloc ( f , f -> mapping_count * sizeof ( * f -> mapping ) ) ; if ( f -> mapping == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> mapping , 0 , f -> mapping_count * sizeof ( * f -> mapping ) ) ; for ( i = 0 ; i < f -> mapping_count ; ++ i ) { Mapping * m = f -> mapping + i ; int mapping_type = get_bits ( f , 16 ) ; if ( mapping_type != 0 ) return error ( f , VORBIS_invalid_setup ) ; m -> chan = ( MappingChannel * ) setup_malloc ( f , f -> channels * sizeof ( * m -> chan ) ) ; if ( m -> chan == NULL ) return error ( f , VORBIS_outofmem ) ; if ( get_bits ( f , 1 ) ) m -> submaps = get_bits ( f , 4 ) + 1 ; else m -> submaps = 1 ; if ( m -> submaps > max_submaps ) max_submaps = m -> submaps ; if ( get_bits ( f , 1 ) ) { <S2SV_StartBug> m -> coupling_steps = get_bits ( f , 8 ) + 1 ; <S2SV_EndBug> for ( k = 0 ; k < m -> coupling_steps ; ++ k ) { m -> chan [ k ] . magnitude = get_bits ( f , ilog ( f -> channels - 1 ) ) ; m -> chan [ k ] . angle = get_bits ( f , ilog ( f -> channels - 1 ) ) ; if ( m -> chan [ k ] . magnitude >= f -> channels ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> chan [ k ] . angle >= f -> channels ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> chan [ k ] . magnitude == m -> chan [ k ] . angle ) return error ( f , VORBIS_invalid_setup ) ; } } else m -> coupling_steps = 0 ; if ( get_bits ( f , 2 ) ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> submaps > 1 ) { for ( j = 0 ; j < f -> channels ; ++ j ) { m -> chan [ j ] . mux = get_bits ( f , 4 ) ; if ( m -> chan [ j ] . mux >= m -> submaps ) return error ( f , VORBIS_invalid_setup ) ; } } else for ( j = 0 ; j < f -> channels ; ++ j ) m -> chan [ j ] . mux = 0 ; for ( j = 0 ; j < m -> submaps ; ++ j ) { get_bits ( f , 8 ) ; m -> submap_floor [ j ] = get_bits ( f , 8 ) ; m -> submap_residue [ j ] = get_bits ( f , 8 ) ; if ( m -> submap_floor [ j ] >= f -> floor_count ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> submap_residue [ j ] >= f -> residue_count ) return error ( f , VORBIS_invalid_setup ) ; } } f -> mode_count = get_bits ( f , 6 ) + 1 ; for ( i = 0 ; i < f -> mode_count ; ++ i ) { Mode * m = f -> mode_config + i ; m -> blockflag = get_bits ( f , 1 ) ; m -> windowtype = get_bits ( f , 16 ) ; m -> transformtype = get_bits ( f , 16 ) ; m -> mapping = get_bits ( f , 8 ) ; if ( m -> windowtype != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> transformtype != 0 ) return error ( f , VORBIS_invalid_setup ) ; if ( m -> mapping >= f -> mapping_count ) return error ( f , VORBIS_invalid_setup ) ; } flush_packet ( f ) ; f -> previous_length = 0 ; for ( i = 0 ; i < f -> channels ; ++ i ) { f -> channel_buffers [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 ) ; f -> previous_window [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 / 2 ) ; f -> finalY [ i ] = ( int16 * ) setup_malloc ( f , sizeof ( int16 ) * longest_floorlist ) ; if ( f -> channel_buffers [ i ] == NULL || f -> previous_window [ i ] == NULL || f -> finalY [ i ] == NULL ) return error ( f , VORBIS_outofmem ) ; memset ( f -> channel_buffers [ i ] , 0 , sizeof ( float ) * f -> blocksize_1 ) ; # ifdef STB_VORBIS_NO_DEFER_FLOOR f -> floor_buffers [ i ] = ( float * ) setup_malloc ( f , sizeof ( float ) * f -> blocksize_1 / 2 ) ; if ( f -> floor_buffers [ i ] == NULL ) return error ( f , VORBIS_outofmem ) ; # endif } if ( ! init_blocksize ( f , 0 , f -> blocksize_0 ) ) return FALSE ; if ( ! init_blocksize ( f , 1 , f -> blocksize_1 ) ) return FALSE ; f -> blocksize [ 0 ] = f -> blocksize_0 ; f -> blocksize [ 1 ] = f -> blocksize_1 ; # ifdef STB_VORBIS_DIVIDE_TABLE if ( integer_divide_table [ 1 ] [ 1 ] == 0 ) for ( i = 0 ; i < DIVTAB_NUMER ; ++ i ) for ( j = 1 ; j < DIVTAB_DENOM ; ++ j ) integer_divide_table [ i ] [ j ] = i / j ; # endif { uint32 imdct_mem = ( f -> blocksize_1 * sizeof ( float ) >> 1 ) ; uint32 classify_mem ; int i , max_part_read = 0 ; for ( i = 0 ; i < f -> residue_count ; ++ i ) { Residue * r = f -> residue_config + i ; unsigned int actual_size = f -> blocksize_1 / 2 ; unsigned int limit_r_begin = r -> begin < actual_size ? r -> begin : actual_size ; unsigned int limit_r_end = r -> end < actual_size ? r -> end : actual_size ; int n_read = limit_r_end - limit_r_begin ; int part_read = n_read / r -> part_size ; if ( part_read > max_part_read ) max_part_read = part_read ; } # ifndef STB_VORBIS_DIVIDES_IN_RESIDUE classify_mem = f -> channels * ( sizeof ( void * ) + max_part_read * sizeof ( uint8 * ) ) ; # else classify_mem = f -> channels * ( sizeof ( void * ) + max_part_read * sizeof ( int * ) ) ; # endif f -> temp_memory_required = classify_mem ; if ( imdct_mem > f -> temp_memory_required ) f -> temp_memory_required = imdct_mem ; } f -> first_decode = TRUE ; if ( f -> alloc . alloc_buffer ) { assert ( f -> temp_offset == f -> alloc . alloc_buffer_length_in_bytes ) ; if ( f -> setup_offset + sizeof ( * f ) + f -> temp_memory_required > ( unsigned ) f -> temp_offset ) return error ( f , VORBIS_outofmem ) ; } f -> first_audio_page_offset = stb_vorbis_get_file_offset ( f ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( current_length >= 32 ) return error ( f , VORBIS_invalid_setup ) ; if ( <S2SV_ModStart> 1 ) { int values = lookup1_values ( c -> entries , c -> dimensions ) ; if ( values < 0 ) return error ( f , VORBIS_invalid_setup ) ; <S2SV_ModStart> -> lookup_values = ( uint32 ) values <S2SV_ModEnd> ; } else <S2SV_ModStart> g -> values - 1 ; ++ j ) if ( p [ j ] . x == p [ j + 1 ] . x ) return error ( f , VORBIS_invalid_setup ) ; for ( j = 0 ; j < g -> values <S2SV_ModStart> ) + 1 ; if ( m -> coupling_steps > f -> channels ) return error ( f , VORBIS_invalid_setup )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14059\n\n```\nCWE-834 static int cine_read_header ( AVFormatContext * avctx ) { AVIOContext * pb = avctx -> pb ; AVStream * st ; unsigned int version , compression , offImageHeader , offSetup , offImageOffsets , biBitCount , length , CFA ; int vflip ; char * description ; uint64_t i ; st = avformat_new_stream ( avctx , NULL ) ; if ( ! st ) return AVERROR ( ENOMEM ) ; st -> codecpar -> codec_type = AVMEDIA_TYPE_VIDEO ; st -> codecpar -> codec_id = AV_CODEC_ID_RAWVIDEO ; st -> codecpar -> codec_tag = 0 ; avio_skip ( pb , 4 ) ; compression = avio_rl16 ( pb ) ; version = avio_rl16 ( pb ) ; if ( version != 1 ) { avpriv_request_sample ( avctx , \"unknown<S2SV_blank>version<S2SV_blank>%i\" , version ) ; return AVERROR_INVALIDDATA ; } avio_skip ( pb , 12 ) ; st -> duration = avio_rl32 ( pb ) ; offImageHeader = avio_rl32 ( pb ) ; offSetup = avio_rl32 ( pb ) ; offImageOffsets = avio_rl32 ( pb ) ; avio_skip ( pb , 8 ) ; avio_seek ( pb , offImageHeader , SEEK_SET ) ; avio_skip ( pb , 4 ) ; st -> codecpar -> width = avio_rl32 ( pb ) ; st -> codecpar -> height = avio_rl32 ( pb ) ; if ( avio_rl16 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; biBitCount = avio_rl16 ( pb ) ; if ( biBitCount != 8 && biBitCount != 16 && biBitCount != 24 && biBitCount != 48 ) { avpriv_request_sample ( avctx , \"unsupported<S2SV_blank>biBitCount<S2SV_blank>%i\" , biBitCount ) ; return AVERROR_INVALIDDATA ; } switch ( avio_rl32 ( pb ) ) { case BMP_RGB : vflip = 0 ; break ; case 0x100 : st -> codecpar -> codec_tag = MKTAG ( 'B' , 'I' , 'T' , 0 ) ; vflip = 1 ; break ; default : avpriv_request_sample ( avctx , \"unknown<S2SV_blank>bitmap<S2SV_blank>compression\" ) ; return AVERROR_INVALIDDATA ; } avio_skip ( pb , 4 ) ; avio_seek ( pb , offSetup , SEEK_SET ) ; avio_skip ( pb , 140 ) ; if ( avio_rl16 ( pb ) != 0x5453 ) return AVERROR_INVALIDDATA ; length = avio_rl16 ( pb ) ; if ( length < 0x163C ) { avpriv_request_sample ( avctx , \"short<S2SV_blank>SETUP<S2SV_blank>header\" ) ; return AVERROR_INVALIDDATA ; } avio_skip ( pb , 616 ) ; if ( ! avio_rl32 ( pb ) ^ vflip ) { st -> codecpar -> extradata = av_strdup ( \"BottomUp\" ) ; st -> codecpar -> extradata_size = 9 ; } avio_skip ( pb , 4 ) ; avpriv_set_pts_info ( st , 64 , 1 , avio_rl32 ( pb ) ) ; avio_skip ( pb , 20 ) ; set_metadata_int ( & st -> metadata , \"camera_version\" , avio_rl32 ( pb ) , 0 ) ; set_metadata_int ( & st -> metadata , \"firmware_version\" , avio_rl32 ( pb ) , 0 ) ; set_metadata_int ( & st -> metadata , \"software_version\" , avio_rl32 ( pb ) , 0 ) ; set_metadata_int ( & st -> metadata , \"recording_timezone\" , avio_rl32 ( pb ) , 0 ) ; CFA = avio_rl32 ( pb ) ; set_metadata_int ( & st -> metadata , \"brightness\" , avio_rl32 ( pb ) , 1 ) ; set_metadata_int ( & st -> metadata , \"contrast\" , avio_rl32 ( pb ) , 1 ) ; set_metadata_int ( & st -> metadata , \"gamma\" , avio_rl32 ( pb ) , 1 ) ; avio_skip ( pb , 12 + 16 ) ; set_metadata_float ( & st -> metadata , \"wbgain[0].r\" , av_int2float ( avio_rl32 ( pb ) ) , 1 ) ; set_metadata_float ( & st -> metadata , \"wbgain[0].b\" , av_int2float ( avio_rl32 ( pb ) ) , 1 ) ; avio_skip ( pb , 36 ) ; st -> codecpar -> bits_per_coded_sample = avio_rl32 ( pb ) ; if ( compression == CC_RGB ) { if ( biBitCount == 8 ) { st -> codecpar -> format = AV_PIX_FMT_GRAY8 ; } else if ( biBitCount == 16 ) { st -> codecpar -> format = AV_PIX_FMT_GRAY16LE ; } else if ( biBitCount == 24 ) { st -> codecpar -> format = AV_PIX_FMT_BGR24 ; } else if ( biBitCount == 48 ) { st -> codecpar -> format = AV_PIX_FMT_BGR48LE ; } else { avpriv_request_sample ( avctx , \"unsupported<S2SV_blank>biBitCount<S2SV_blank>%i\" , biBitCount ) ; return AVERROR_INVALIDDATA ; } } else if ( compression == CC_UNINT ) { switch ( CFA & 0xFFFFFF ) { case CFA_BAYER : if ( biBitCount == 8 ) { st -> codecpar -> format = AV_PIX_FMT_BAYER_GBRG8 ; } else if ( biBitCount == 16 ) { st -> codecpar -> format = AV_PIX_FMT_BAYER_GBRG16LE ; } else { avpriv_request_sample ( avctx , \"unsupported<S2SV_blank>biBitCount<S2SV_blank>%i\" , biBitCount ) ; return AVERROR_INVALIDDATA ; } break ; case CFA_BAYERFLIP : if ( biBitCount == 8 ) { st -> codecpar -> format = AV_PIX_FMT_BAYER_RGGB8 ; } else if ( biBitCount == 16 ) { st -> codecpar -> format = AV_PIX_FMT_BAYER_RGGB16LE ; } else { avpriv_request_sample ( avctx , \"unsupported<S2SV_blank>biBitCount<S2SV_blank>%i\" , biBitCount ) ; return AVERROR_INVALIDDATA ; } break ; default : avpriv_request_sample ( avctx , \"unsupported<S2SV_blank>Color<S2SV_blank>Field<S2SV_blank>Array<S2SV_blank>(CFA)<S2SV_blank>%i\" , CFA & 0xFFFFFF ) ; return AVERROR_INVALIDDATA ; } } else { avpriv_request_sample ( avctx , \"unsupported<S2SV_blank>compression<S2SV_blank>%i\" , compression ) ; return AVERROR_INVALIDDATA ; } avio_skip ( pb , 668 ) ; set_metadata_int ( & st -> metadata , \"shutter_ns\" , avio_rl32 ( pb ) , 0 ) ; avio_skip ( pb , 24 ) ; # define DESCRIPTION_SIZE 4096 description = av_malloc ( DESCRIPTION_SIZE + 1 ) ; if ( ! description ) return AVERROR ( ENOMEM ) ; i = avio_get_str ( pb , DESCRIPTION_SIZE , description , DESCRIPTION_SIZE + 1 ) ; if ( i < DESCRIPTION_SIZE ) avio_skip ( pb , DESCRIPTION_SIZE - i ) ; if ( description [ 0 ] ) av_dict_set ( & st -> metadata , \"description\" , description , AV_DICT_DONT_STRDUP_VAL ) ; else av_free ( description ) ; avio_skip ( pb , 1176 ) ; set_metadata_int ( & st -> metadata , \"enable_crop\" , avio_rl32 ( pb ) , 1 ) ; set_metadata_int ( & st -> metadata , \"crop_left\" , avio_rl32 ( pb ) , 1 ) ; set_metadata_int ( & st -> metadata , \"crop_top\" , avio_rl32 ( pb ) , 1 ) ; set_metadata_int ( & st -> metadata , \"crop_right\" , avio_rl32 ( pb ) , 1 ) ; set_metadata_int ( & st -> metadata , \"crop_bottom\" , avio_rl32 ( pb ) , 1 ) ; avio_seek ( pb , offImageOffsets , SEEK_SET ) ; <S2SV_StartBug> for ( i = 0 ; i < st -> duration ; i ++ ) <S2SV_EndBug> av_add_index_entry ( st , avio_rl64 ( pb ) , i , 0 , 0 , AVINDEX_KEYFRAME ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> AVINDEX_KEYFRAME ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-255(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20839\n\n```\nCWE-255 int vt_reset_keyboard ( int fd ) { <S2SV_StartBug> int kb ; <S2SV_EndBug> <S2SV_StartBug> kb = vt_default_utf8 ( ) != 0 ? K_UNICODE : K_XLATE ; <S2SV_EndBug> if ( ioctl ( fd , KDSKBMODE , kb ) < 0 ) return - errno ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { int kb , r <S2SV_ModStart> K_UNICODE : K_XLATE ; r = vt_verify_kbmode ( fd ) ; if ( r == - EBUSY ) { log_debug_errno ( r , \"Keyboard<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>XLATE<S2SV_blank>or<S2SV_blank>UNICODE<S2SV_blank>mode,<S2SV_blank>not<S2SV_blank>resetting:<S2SV_blank>%m\" ) ; return 0 ; } else if ( r < 0 ) return r\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1738\n\n```\nCWE-200 static int raw_cmd_copyout ( int cmd , void __user * param , struct floppy_raw_cmd * ptr ) { int ret ; while ( ptr ) { <S2SV_StartBug> ret = copy_to_user ( param , ptr , sizeof ( * ptr ) ) ; <S2SV_EndBug> if ( ret ) return - EFAULT ; param += sizeof ( struct floppy_raw_cmd ) ; if ( ( ptr -> flags & FD_RAW_READ ) && ptr -> buffer_length ) { if ( ptr -> length >= 0 && ptr -> length <= ptr -> buffer_length ) { long length = ptr -> buffer_length - ptr -> length ; ret = fd_copyout ( ptr -> data , ptr -> kernel_data , length ) ; if ( ret ) return ret ; } } ptr = ptr -> next ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptr ) { struct floppy_raw_cmd cmd = * ptr ; cmd . next = NULL ; cmd . kernel_data = NULL ; <S2SV_ModStart> ( param , & cmd <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> , sizeof ( cmd <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12984\n\n```\nCWE-476 static int nfc_genl_deactivate_target ( struct sk_buff * skb , struct genl_info * info ) { struct nfc_dev * dev ; u32 device_idx , target_idx ; int rc ; <S2SV_StartBug> if ( ! info -> attrs [ NFC_ATTR_DEVICE_INDEX ] ) <S2SV_EndBug> return - EINVAL ; device_idx = nla_get_u32 ( info -> attrs [ NFC_ATTR_DEVICE_INDEX ] ) ; dev = nfc_get_device ( device_idx ) ; if ( ! dev ) return - ENODEV ; target_idx = nla_get_u32 ( info -> attrs [ NFC_ATTR_TARGET_INDEX ] ) ; rc = nfc_deactivate_target ( dev , target_idx , NFC_TARGET_MODE_SLEEP ) ; nfc_put_device ( dev ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> attrs [ NFC_ATTR_DEVICE_INDEX ] || ! info -> attrs [ NFC_ATTR_TARGET_INDEX\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static double get_prediction_decay_rate ( const VP9_COMMON * cm , <S2SV_EndBug> const FIRSTPASS_STATS * next_frame ) { <S2SV_StartBug> const double mb_sr_err_diff = ( next_frame -> sr_coded_error - <S2SV_EndBug> next_frame -> coded_error ) / cm -> MBs ; <S2SV_StartBug> const double second_ref_decay = mb_sr_err_diff <= 512.0 <S2SV_EndBug> <S2SV_StartBug> ? fclamp ( pow ( 1.0 - ( mb_sr_err_diff / 512.0 ) , 0.5 ) , 0.85 , 1.0 ) <S2SV_EndBug> : 0.85 ; return MIN ( second_ref_decay , next_frame -> pcnt_inter ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> get_prediction_decay_rate ( const VP9_COMP * cpi <S2SV_ModEnd> , const FIRSTPASS_STATS <S2SV_ModStart> { const double sr_decay_rate = get_sr_decay_rate ( cpi , next_frame ) <S2SV_ModEnd> ; const double <S2SV_ModStart> ; const double zero_motion_factor = ( 0.95 * pow ( ( next_frame -> pcnt_inter - next_frame -> pcnt_motion ) , ZM_POWER_FACTOR ) ) ; return MAX ( zero_motion_factor , ( sr_decay_rate + ( <S2SV_ModEnd> ( 1.0 - <S2SV_ModStart> ( 1.0 - sr_decay_rate ) * zero_motion_factor ) ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 int generic_permission ( struct inode * inode , int mask ) { int ret ; ret = acl_permission_check ( inode , mask ) ; if ( ret != - EACCES ) return ret ; if ( S_ISDIR ( inode -> i_mode ) ) { <S2SV_StartBug> if ( inode_capable ( inode , CAP_DAC_OVERRIDE ) ) <S2SV_EndBug> return 0 ; if ( ! ( mask & MAY_WRITE ) ) <S2SV_StartBug> if ( inode_capable ( inode , CAP_DAC_READ_SEARCH ) ) <S2SV_EndBug> return 0 ; return - EACCES ; } if ( ! ( mask & MAY_EXEC ) || ( inode -> i_mode & S_IXUGO ) ) <S2SV_StartBug> if ( inode_capable ( inode , CAP_DAC_OVERRIDE ) ) <S2SV_EndBug> return 0 ; mask &= MAY_READ | MAY_WRITE | MAY_EXEC ; if ( mask == MAY_READ ) <S2SV_StartBug> if ( inode_capable ( inode , CAP_DAC_READ_SEARCH ) ) <S2SV_EndBug> return 0 ; return - EACCES ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode , <S2SV_ModStart> ) if ( capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode , <S2SV_ModStart> ) if ( capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode , <S2SV_ModStart> ) if ( capable_wrt_inode_uidgid <S2SV_ModEnd> ( inode ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t ftpClientParseDirEntry ( char_t * line , FtpDirEntry * dirEntry ) { uint_t i ; size_t n ; char_t * p ; char_t * token ; static const char_t months [ 13 ] [ 4 ] = { \"<S2SV_blank><S2SV_blank><S2SV_blank>\" , \"Jan\" , \"Feb\" , \"Mar\" , \"Apr\" , \"May\" , \"Jun\" , \"Jul\" , \"Aug\" , \"Sep\" , \"Oct\" , \"Nov\" , \"Dec\" } ; token = osStrtok_r ( line , \"<S2SV_blank>\\\\t\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; if ( osIsdigit ( token [ 0 ] ) ) { if ( osStrlen ( token ) == 8 && token [ 2 ] == '-' && token [ 5 ] == '-' ) { dirEntry -> modified . month = ( uint8_t ) osStrtoul ( token , NULL , 10 ) ; dirEntry -> modified . day = ( uint8_t ) osStrtoul ( token + 3 , NULL , 10 ) ; dirEntry -> modified . year = ( uint16_t ) osStrtoul ( token + 6 , NULL , 10 ) + 2000 ; } else if ( osStrlen ( token ) == 10 && token [ 2 ] == '/' && token [ 5 ] == '/' ) { dirEntry -> modified . month = ( uint8_t ) osStrtoul ( token , NULL , 10 ) ; dirEntry -> modified . day = ( uint8_t ) osStrtoul ( token + 3 , NULL , 10 ) ; dirEntry -> modified . year = ( uint16_t ) osStrtoul ( token + 6 , NULL , 10 ) ; } else { return ERROR_INVALID_SYNTAX ; } token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; if ( osStrlen ( token ) >= 5 && token [ 2 ] == ':' ) { dirEntry -> modified . hours = ( uint8_t ) osStrtoul ( token , NULL , 10 ) ; dirEntry -> modified . minutes = ( uint8_t ) osStrtoul ( token + 3 , NULL , 10 ) ; <S2SV_StartBug> if ( strstr ( token , \"PM\" ) != NULL ) <S2SV_EndBug> dirEntry -> modified . hours += 12 ; } <S2SV_StartBug> else <S2SV_EndBug> { return ERROR_INVALID_SYNTAX ; } token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; if ( ! osStrcmp ( token , \"<DIR>\" ) ) { dirEntry -> attributes |= FTP_FILE_ATTR_DIRECTORY ; } else { dirEntry -> size = osStrtoul ( token , NULL , 10 ) ; } token = osStrtok_r ( NULL , \"<S2SV_blank>\\\\r\\\\n\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; n = osStrlen ( token ) ; n = MIN ( n , FTP_CLIENT_MAX_FILENAME_LEN ) ; osStrncpy ( dirEntry -> name , token , n ) ; dirEntry -> name [ n ] = '\\\\0' ; } else { <S2SV_StartBug> if ( strchr ( token , 'd' ) != NULL ) <S2SV_EndBug> dirEntry -> attributes |= FTP_FILE_ATTR_DIRECTORY ; <S2SV_StartBug> if ( strchr ( token , 'w' ) == NULL ) <S2SV_EndBug> dirEntry -> attributes |= FTP_FILE_ATTR_READ_ONLY ; <S2SV_StartBug> token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; <S2SV_EndBug> if ( token == NULL ) return ERROR_INVALID_SYNTAX ; token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; dirEntry -> size = osStrtoul ( token , NULL , 10 ) ; token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; for ( i = 1 ; i <= 12 ; i ++ ) { if ( ! osStrcmp ( token , months [ i ] ) ) { dirEntry -> modified . month = i ; break ; } } token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; dirEntry -> modified . day = ( uint8_t ) osStrtoul ( token , NULL , 10 ) ; token = osStrtok_r ( NULL , \"<S2SV_blank>\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; if ( osStrlen ( token ) == 4 ) { dirEntry -> modified . year = ( uint16_t ) osStrtoul ( token , NULL , 10 ) ; } else if ( osStrlen ( token ) == 5 ) { token [ 2 ] = '\\\\0' ; dirEntry -> modified . hours = ( uint8_t ) osStrtoul ( token , NULL , 10 ) ; dirEntry -> modified . minutes = ( uint8_t ) osStrtoul ( token + 3 , NULL , 10 ) ; } else { return ERROR_INVALID_SYNTAX ; } token = osStrtok_r ( NULL , \"<S2SV_blank>\\\\r\\\\n\" , & p ) ; if ( token == NULL ) return ERROR_INVALID_SYNTAX ; n = osStrlen ( token ) ; n = MIN ( n , FTP_CLIENT_MAX_FILENAME_LEN ) ; osStrncpy ( dirEntry -> name , token , n ) ; dirEntry -> name [ n ] = '\\\\0' ; } return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( osStrstr <S2SV_ModEnd> ( token , <S2SV_ModStart> != NULL ) { <S2SV_ModStart> 12 ; } } <S2SV_ModStart> { if ( osStrchr <S2SV_ModEnd> ( token , <S2SV_ModStart> != NULL ) { <S2SV_ModStart> |= FTP_FILE_ATTR_DIRECTORY ; } if ( osStrchr <S2SV_ModEnd> ( token , <S2SV_ModStart> == NULL ) { <S2SV_ModStart> |= FTP_FILE_ATTR_READ_ONLY ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12999\n\n```\nCWE-125 static int isis_print ( netdissect_options * ndo , const uint8_t * p , u_int length ) { const struct isis_common_header * isis_header ; const struct isis_iih_lan_header * header_iih_lan ; const struct isis_iih_ptp_header * header_iih_ptp ; const struct isis_lsp_header * header_lsp ; const struct isis_csnp_header * header_csnp ; const struct isis_psnp_header * header_psnp ; const struct isis_tlv_lsp * tlv_lsp ; const struct isis_tlv_ptp_adj * tlv_ptp_adj ; const struct isis_tlv_is_reach * tlv_is_reach ; const struct isis_tlv_es_reach * tlv_es_reach ; uint8_t pdu_type , max_area , id_length , tlv_type , tlv_len , tmp , alen , lan_alen , prefix_len ; uint8_t ext_is_len , ext_ip_len , mt_len ; const uint8_t * optr , * pptr , * tptr ; u_short packet_len , pdu_len , key_id ; u_int i , vendor_id ; int sigcheck ; packet_len = length ; optr = p ; isis_header = ( const struct isis_common_header * ) p ; ND_TCHECK ( * isis_header ) ; if ( length < ISIS_COMMON_HEADER_SIZE ) goto trunc ; pptr = p + ( ISIS_COMMON_HEADER_SIZE ) ; header_iih_lan = ( const struct isis_iih_lan_header * ) pptr ; header_iih_ptp = ( const struct isis_iih_ptp_header * ) pptr ; header_lsp = ( const struct isis_lsp_header * ) pptr ; header_csnp = ( const struct isis_csnp_header * ) pptr ; header_psnp = ( const struct isis_psnp_header * ) pptr ; if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"IS-IS\" ) ) ; if ( isis_header -> version != ISIS_VERSION ) { ND_PRINT ( ( ndo , \"version<S2SV_blank>%d<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , isis_header -> version ) ) ; return ( 0 ) ; } if ( ( isis_header -> id_length != SYSTEM_ID_LEN ) && ( isis_header -> id_length != 0 ) ) { ND_PRINT ( ( ndo , \"system<S2SV_blank>ID<S2SV_blank>length<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\" , isis_header -> id_length ) ) ; return ( 0 ) ; } if ( isis_header -> pdu_version != ISIS_VERSION ) { ND_PRINT ( ( ndo , \"version<S2SV_blank>%d<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , isis_header -> pdu_version ) ) ; return ( 0 ) ; } if ( length < isis_header -> fixed_len ) { ND_PRINT ( ( ndo , \"fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>><S2SV_blank>packet<S2SV_blank>length<S2SV_blank>%u\" , isis_header -> fixed_len , length ) ) ; return ( 0 ) ; } if ( isis_header -> fixed_len < ISIS_COMMON_HEADER_SIZE ) { ND_PRINT ( ( ndo , \"fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>minimum<S2SV_blank>header<S2SV_blank>size<S2SV_blank>%u\" , isis_header -> fixed_len , ( u_int ) ISIS_COMMON_HEADER_SIZE ) ) ; return ( 0 ) ; } max_area = isis_header -> max_area ; switch ( max_area ) { case 0 : max_area = 3 ; break ; case 255 : ND_PRINT ( ( ndo , \"bad<S2SV_blank>packet<S2SV_blank>--<S2SV_blank>255<S2SV_blank>areas\" ) ) ; return ( 0 ) ; default : break ; } id_length = isis_header -> id_length ; switch ( id_length ) { case 0 : id_length = 6 ; break ; case 1 : case 2 : case 3 : case 4 : case 5 : case 6 : case 7 : case 8 : break ; case 255 : id_length = 0 ; break ; default : break ; } if ( id_length != 6 ) { ND_PRINT ( ( ndo , \"bad<S2SV_blank>packet<S2SV_blank>--<S2SV_blank>illegal<S2SV_blank>sys-ID<S2SV_blank>length<S2SV_blank>(%u)\" , id_length ) ) ; return ( 0 ) ; } pdu_type = isis_header -> pdu_type ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \"%s%s\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , tok2str ( isis_pdu_values , \"unknown<S2SV_blank>PDU-Type<S2SV_blank>%u\" , pdu_type ) ) ) ; } else { ND_PRINT ( ( ndo , \"%slength<S2SV_blank>%u\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , length ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t%s,<S2SV_blank>hlen:<S2SV_blank>%u,<S2SV_blank>v:<S2SV_blank>%u,<S2SV_blank>pdu-v:<S2SV_blank>%u,<S2SV_blank>sys-id-len:<S2SV_blank>%u<S2SV_blank>(%u),<S2SV_blank>max-area:<S2SV_blank>%u<S2SV_blank>(%u)\" , tok2str ( isis_pdu_values , \"unknown,<S2SV_blank>type<S2SV_blank>%u\" , pdu_type ) , isis_header -> fixed_len , isis_header -> version , isis_header -> pdu_version , id_length , isis_header -> id_length , max_area , isis_header -> max_area ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , optr , \"\\\\n\\\\t\" , 8 ) ) return ( 0 ) ; } } switch ( pdu_type ) { case ISIS_PDU_L1_LAN_IIH : case ISIS_PDU_L2_LAN_IIH : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_iih_lan ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>src-id<S2SV_blank>%s\" , isis_print_id ( header_iih_lan -> source_id , SYSTEM_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>lan-id<S2SV_blank>%s,<S2SV_blank>prio<S2SV_blank>%u\" , isis_print_id ( header_iih_lan -> lan_id , NODE_ID_LEN ) , header_iih_lan -> priority ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_iih_lan -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>source-id:<S2SV_blank>%s,<S2SV_blank><S2SV_blank>holding<S2SV_blank>time:<S2SV_blank>%us,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , isis_print_id ( header_iih_lan -> source_id , SYSTEM_ID_LEN ) , EXTRACT_16BITS ( header_iih_lan -> holding_time ) , tok2str ( isis_iih_circuit_type_values , \"unknown<S2SV_blank>circuit<S2SV_blank>type<S2SV_blank>0x%02x\" , header_iih_lan -> circuit_type ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>lan-id:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s,<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , isis_print_id ( header_iih_lan -> lan_id , NODE_ID_LEN ) , ( header_iih_lan -> priority ) & ISIS_LAN_PRIORITY_MASK , pdu_len ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_IIH_LAN_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_LAN_HEADER_SIZE ) ; break ; case ISIS_PDU_PTP_IIH : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_iih_ptp ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>src-id<S2SV_blank>%s\" , isis_print_id ( header_iih_ptp -> source_id , SYSTEM_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_iih_ptp -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>source-id:<S2SV_blank>%s,<S2SV_blank>holding<S2SV_blank>time:<S2SV_blank>%us,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , isis_print_id ( header_iih_ptp -> source_id , SYSTEM_ID_LEN ) , EXTRACT_16BITS ( header_iih_ptp -> holding_time ) , tok2str ( isis_iih_circuit_type_values , \"unknown<S2SV_blank>circuit<S2SV_blank>type<S2SV_blank>0x%02x\" , header_iih_ptp -> circuit_type ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>circuit-id:<S2SV_blank>0x%02x,<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , header_iih_ptp -> circuit_id , pdu_len ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_IIH_PTP_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_IIH_PTP_HEADER_SIZE ) ; break ; case ISIS_PDU_L1_LSP : case ISIS_PDU_L2_LSP : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_LSP_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ISIS_LSP_HEADER_SIZE ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_lsp ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_LSP_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>lsp-id<S2SV_blank>%s,<S2SV_blank>seq<S2SV_blank>0x%08x,<S2SV_blank>lifetime<S2SV_blank>%5us\" , isis_print_id ( header_lsp -> lsp_id , LSP_ID_LEN ) , EXTRACT_32BITS ( header_lsp -> sequence_number ) , EXTRACT_16BITS ( header_lsp -> remaining_lifetime ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_lsp -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>lsp-id:<S2SV_blank>%s,<S2SV_blank>seq:<S2SV_blank>0x%08x,<S2SV_blank>lifetime:<S2SV_blank>%5us\\\\n\\\\t<S2SV_blank><S2SV_blank>chksum:<S2SV_blank>0x%04x\" , isis_print_id ( header_lsp -> lsp_id , LSP_ID_LEN ) , EXTRACT_32BITS ( header_lsp -> sequence_number ) , EXTRACT_16BITS ( header_lsp -> remaining_lifetime ) , EXTRACT_16BITS ( header_lsp -> checksum ) ) ) ; osi_print_cksum ( ndo , ( const uint8_t * ) header_lsp -> lsp_id , EXTRACT_16BITS ( header_lsp -> checksum ) , 12 , length - 12 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u,<S2SV_blank>Flags:<S2SV_blank>[<S2SV_blank>%s\" , pdu_len , ISIS_MASK_LSP_OL_BIT ( header_lsp -> typeblock ) ? \"Overload<S2SV_blank>bit<S2SV_blank>set,<S2SV_blank>\" : \"\" ) ) ; if ( ISIS_MASK_LSP_ATT_BITS ( header_lsp -> typeblock ) ) { ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_ATT_DEFAULT_BIT ( header_lsp -> typeblock ) ? \"default<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_ATT_DELAY_BIT ( header_lsp -> typeblock ) ? \"delay<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_ATT_EXPENSE_BIT ( header_lsp -> typeblock ) ? \"expense<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_ATT_ERROR_BIT ( header_lsp -> typeblock ) ? \"error<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"ATT<S2SV_blank>bit<S2SV_blank>set,<S2SV_blank>\" ) ) ; } ND_PRINT ( ( ndo , \"%s\" , ISIS_MASK_LSP_PARTITION_BIT ( header_lsp -> typeblock ) ? \"P<S2SV_blank>bit<S2SV_blank>set,<S2SV_blank>\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>]\" , tok2str ( isis_lsp_istype_values , \"Unknown(0x%x)\" , ISIS_MASK_LSP_ISTYPE_BITS ( header_lsp -> typeblock ) ) ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_LSP_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_LSP_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_LSP_HEADER_SIZE ) ; break ; case ISIS_PDU_L1_CSNP : case ISIS_PDU_L2_CSNP : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ( ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_csnp ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>src-id<S2SV_blank>%s\" , isis_print_id ( header_csnp -> source_id , NODE_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_csnp -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>source-id:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s,<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , isis_print_id ( header_csnp -> source_id , NODE_ID_LEN ) , pdu_len ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>start<S2SV_blank>lsp-id:<S2SV_blank>%s\" , isis_print_id ( header_csnp -> start_lsp_id , LSP_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>end<S2SV_blank>lsp-id:<S2SV_blank><S2SV_blank><S2SV_blank>%s\" , isis_print_id ( header_csnp -> end_lsp_id , LSP_ID_LEN ) ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_CSNP_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_CSNP_HEADER_SIZE ) ; break ; case ISIS_PDU_L1_PSNP : case ISIS_PDU_L2_PSNP : if ( isis_header -> fixed_len != ( ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) ) { ND_PRINT ( ( ndo , \"-<S2SV_blank>bogus<S2SV_blank>fixed<S2SV_blank>header<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%lu\" , isis_header -> fixed_len , ( unsigned long ) ( ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) ) ) ; return ( 0 ) ; } ND_TCHECK ( * header_psnp ) ; if ( length < ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) goto trunc ; if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>src-id<S2SV_blank>%s\" , isis_print_id ( header_psnp -> source_id , NODE_ID_LEN ) ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } pdu_len = EXTRACT_16BITS ( header_psnp -> pdu_len ) ; if ( packet_len > pdu_len ) { packet_len = pdu_len ; length = pdu_len ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>source-id:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s,<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , isis_print_id ( header_psnp -> source_id , NODE_ID_LEN ) , pdu_len ) ) ; if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ISIS_PSNP_HEADER_SIZE ) ) return ( 0 ) ; } packet_len -= ( ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) ; pptr = p + ( ISIS_COMMON_HEADER_SIZE + ISIS_PSNP_HEADER_SIZE ) ; break ; default : if ( ndo -> ndo_vflag == 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ( 1 ) ; } ( void ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , length ) ; return ( 0 ) ; } while ( packet_len > 0 ) { ND_TCHECK2 ( * pptr , 2 ) ; if ( packet_len < 2 ) goto trunc ; tlv_type = * pptr ++ ; tlv_len = * pptr ++ ; tmp = tlv_len ; tptr = pptr ; packet_len -= 2 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>#%u,<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( isis_tlv_values , \"unknown\" , tlv_type ) , tlv_type , tlv_len ) ) ; if ( tlv_len == 0 ) continue ; if ( packet_len < tlv_len ) goto trunc ; switch ( tlv_type ) { case ISIS_TLV_AREA_ADDR : ND_TCHECK2 ( * tptr , 1 ) ; alen = * tptr ++ ; <S2SV_StartBug> while ( tmp && alen < tmp ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Area<S2SV_blank>address<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , alen , isonsap_string ( ndo , tptr , alen ) ) ) ; tptr += alen ; tmp -= alen + 1 ; if ( tmp == 0 ) break ; ND_TCHECK2 ( * tptr , 1 ) ; alen = * tptr ++ ; } break ; case ISIS_TLV_ISNEIGH : while ( tmp >= ETHER_ADDR_LEN ) { ND_TCHECK2 ( * tptr , ETHER_ADDR_LEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>SNPA:<S2SV_blank>%s\" , isis_print_id ( tptr , ETHER_ADDR_LEN ) ) ) ; tmp -= ETHER_ADDR_LEN ; tptr += ETHER_ADDR_LEN ; } break ; case ISIS_TLV_ISNEIGH_VARLEN : if ( ! ND_TTEST2 ( * tptr , 1 ) || tmp < 3 ) goto trunctlv ; lan_alen = * tptr ++ ; if ( lan_alen == 0 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>LAN<S2SV_blank>address<S2SV_blank>length<S2SV_blank>0<S2SV_blank>bytes<S2SV_blank>(invalid)\" ) ) ; break ; } tmp -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>LAN<S2SV_blank>address<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>\" , lan_alen ) ) ; while ( tmp >= lan_alen ) { ND_TCHECK2 ( * tptr , lan_alen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tIS<S2SV_blank>Neighbor:<S2SV_blank>%s\" , isis_print_id ( tptr , lan_alen ) ) ) ; tmp -= lan_alen ; tptr += lan_alen ; } break ; case ISIS_TLV_PADDING : break ; case ISIS_TLV_MT_IS_REACH : mt_len = isis_print_mtid ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; if ( mt_len == 0 ) goto trunctlv ; tptr += mt_len ; tmp -= mt_len ; while ( tmp >= 2 + NODE_ID_LEN + 3 + 1 ) { ext_is_len = isis_print_ext_is_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_type ) ; if ( ext_is_len == 0 ) goto trunctlv ; tmp -= ext_is_len ; tptr += ext_is_len ; } break ; case ISIS_TLV_IS_ALIAS_ID : while ( tmp >= NODE_ID_LEN + 1 ) { ext_is_len = isis_print_ext_is_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_type ) ; if ( ext_is_len == 0 ) goto trunctlv ; tmp -= ext_is_len ; tptr += ext_is_len ; } break ; case ISIS_TLV_EXT_IS_REACH : while ( tmp >= NODE_ID_LEN + 3 + 1 ) { ext_is_len = isis_print_ext_is_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_type ) ; if ( ext_is_len == 0 ) goto trunctlv ; tmp -= ext_is_len ; tptr += ext_is_len ; } break ; case ISIS_TLV_IS_REACH : ND_TCHECK2 ( * tptr , 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , tok2str ( isis_is_reach_virtual_values , \"bogus<S2SV_blank>virtual<S2SV_blank>flag<S2SV_blank>0x%02x\" , * tptr ++ ) ) ) ; tlv_is_reach = ( const struct isis_tlv_is_reach * ) tptr ; while ( tmp >= sizeof ( struct isis_tlv_is_reach ) ) { ND_TCHECK ( * tlv_is_reach ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IS<S2SV_blank>Neighbor:<S2SV_blank>%s\" , isis_print_id ( tlv_is_reach -> neighbor_nodeid , NODE_ID_LEN ) ) ) ; isis_print_metric_block ( ndo , & tlv_is_reach -> isis_metric_block ) ; tmp -= sizeof ( struct isis_tlv_is_reach ) ; tlv_is_reach ++ ; } break ; case ISIS_TLV_ESNEIGH : tlv_es_reach = ( const struct isis_tlv_es_reach * ) tptr ; while ( tmp >= sizeof ( struct isis_tlv_es_reach ) ) { ND_TCHECK ( * tlv_es_reach ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ES<S2SV_blank>Neighbor:<S2SV_blank>%s\" , isis_print_id ( tlv_es_reach -> neighbor_sysid , SYSTEM_ID_LEN ) ) ) ; isis_print_metric_block ( ndo , & tlv_es_reach -> isis_metric_block ) ; tmp -= sizeof ( struct isis_tlv_es_reach ) ; tlv_es_reach ++ ; } break ; case ISIS_TLV_INT_IP_REACH : case ISIS_TLV_EXT_IP_REACH : if ( ! isis_print_tlv_ip_reach ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_len ) ) return ( 1 ) ; break ; case ISIS_TLV_EXTD_IP_REACH : while ( tmp > 0 ) { ext_ip_len = isis_print_extd_ip_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , AF_INET ) ; if ( ext_ip_len == 0 ) goto trunctlv ; tptr += ext_ip_len ; tmp -= ext_ip_len ; } break ; case ISIS_TLV_MT_IP_REACH : mt_len = isis_print_mtid ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; if ( mt_len == 0 ) { goto trunctlv ; } tptr += mt_len ; tmp -= mt_len ; while ( tmp > 0 ) { ext_ip_len = isis_print_extd_ip_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , AF_INET ) ; if ( ext_ip_len == 0 ) goto trunctlv ; tptr += ext_ip_len ; tmp -= ext_ip_len ; } break ; case ISIS_TLV_IP6_REACH : while ( tmp > 0 ) { ext_ip_len = isis_print_extd_ip_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , AF_INET6 ) ; if ( ext_ip_len == 0 ) goto trunctlv ; tptr += ext_ip_len ; tmp -= ext_ip_len ; } break ; case ISIS_TLV_MT_IP6_REACH : mt_len = isis_print_mtid ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; if ( mt_len == 0 ) { goto trunctlv ; } tptr += mt_len ; tmp -= mt_len ; while ( tmp > 0 ) { ext_ip_len = isis_print_extd_ip_reach ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , AF_INET6 ) ; if ( ext_ip_len == 0 ) goto trunctlv ; tptr += ext_ip_len ; tmp -= ext_ip_len ; } break ; case ISIS_TLV_IP6ADDR : while ( tmp >= sizeof ( struct in6_addr ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv6<S2SV_blank>interface<S2SV_blank>address:<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tptr += sizeof ( struct in6_addr ) ; tmp -= sizeof ( struct in6_addr ) ; } break ; case ISIS_TLV_AUTH : ND_TCHECK2 ( * tptr , 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s:<S2SV_blank>\" , tok2str ( isis_subtlv_auth_values , \"unknown<S2SV_blank>Authentication<S2SV_blank>type<S2SV_blank>0x%02x\" , * tptr ) ) ) ; switch ( * tptr ) { case ISIS_SUBTLV_AUTH_SIMPLE : if ( fn_printzp ( ndo , tptr + 1 , tlv_len - 1 , ndo -> ndo_snapend ) ) goto trunctlv ; break ; case ISIS_SUBTLV_AUTH_MD5 : for ( i = 1 ; i < tlv_len ; i ++ ) { ND_TCHECK2 ( * ( tptr + i ) , 1 ) ; ND_PRINT ( ( ndo , \"%02x\" , * ( tptr + i ) ) ) ; } if ( tlv_len != ISIS_SUBTLV_AUTH_MD5_LEN + 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>(invalid<S2SV_blank>subTLV)<S2SV_blank>\" ) ) ; sigcheck = signature_verify ( ndo , optr , length , tptr + 1 , isis_clear_checksum_lifetime , header_lsp ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , tok2str ( signature_check_values , \"Unknown\" , sigcheck ) ) ) ; break ; case ISIS_SUBTLV_AUTH_GENERIC : ND_TCHECK2 ( * ( tptr + 1 ) , 2 ) ; key_id = EXTRACT_16BITS ( ( tptr + 1 ) ) ; ND_PRINT ( ( ndo , \"%u,<S2SV_blank>password:<S2SV_blank>\" , key_id ) ) ; for ( i = 1 + sizeof ( uint16_t ) ; i < tlv_len ; i ++ ) { ND_TCHECK2 ( * ( tptr + i ) , 1 ) ; ND_PRINT ( ( ndo , \"%02x\" , * ( tptr + i ) ) ) ; } break ; case ISIS_SUBTLV_AUTH_PRIVATE : default : if ( ! print_unknown_data ( ndo , tptr + 1 , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>\" , tlv_len - 1 ) ) return ( 0 ) ; break ; } break ; case ISIS_TLV_PTP_ADJ : tlv_ptp_adj = ( const struct isis_tlv_ptp_adj * ) tptr ; if ( tmp >= 1 ) { ND_TCHECK2 ( * tptr , 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Adjacency<S2SV_blank>State:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( isis_ptp_adjancey_values , \"unknown\" , * tptr ) , * tptr ) ) ; tmp -- ; } if ( tmp > sizeof ( tlv_ptp_adj -> extd_local_circuit_id ) ) { ND_TCHECK ( tlv_ptp_adj -> extd_local_circuit_id ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended<S2SV_blank>Local<S2SV_blank>circuit-ID:<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tlv_ptp_adj -> extd_local_circuit_id ) ) ) ; tmp -= sizeof ( tlv_ptp_adj -> extd_local_circuit_id ) ; } if ( tmp >= SYSTEM_ID_LEN ) { ND_TCHECK2 ( tlv_ptp_adj -> neighbor_sysid , SYSTEM_ID_LEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Neighbor<S2SV_blank>System-ID:<S2SV_blank>%s\" , isis_print_id ( tlv_ptp_adj -> neighbor_sysid , SYSTEM_ID_LEN ) ) ) ; tmp -= SYSTEM_ID_LEN ; } if ( tmp >= sizeof ( tlv_ptp_adj -> neighbor_extd_local_circuit_id ) ) { ND_TCHECK ( tlv_ptp_adj -> neighbor_extd_local_circuit_id ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Neighbor<S2SV_blank>Extended<S2SV_blank>Local<S2SV_blank>circuit-ID:<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tlv_ptp_adj -> neighbor_extd_local_circuit_id ) ) ) ; } break ; case ISIS_TLV_PROTOCOLS : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>NLPID(s):<S2SV_blank>\" ) ) ; while ( tmp > 0 ) { ND_TCHECK2 ( * ( tptr ) , 1 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>(0x%02x)\" , tok2str ( nlpid_values , \"unknown\" , * tptr ) , * tptr ) ) ; if ( tmp > 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; tptr ++ ; tmp -- ; } break ; case ISIS_TLV_MT_PORT_CAP : { ND_TCHECK2 ( * ( tptr ) , 2 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>MTID(s):<S2SV_blank>%d\" , ( EXTRACT_16BITS ( tptr ) >> 12 ) , ( EXTRACT_16BITS ( tptr ) & 0x0fff ) ) ) ; tmp = tmp - 2 ; tptr = tptr + 2 ; if ( tmp ) isis_print_mt_port_cap_subtlv ( ndo , tptr , tmp ) ; break ; } case ISIS_TLV_MT_CAPABILITY : ND_TCHECK2 ( * ( tptr ) , 2 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>O:<S2SV_blank>%d,<S2SV_blank>RES:<S2SV_blank>%d,<S2SV_blank>MTID(s):<S2SV_blank>%d\" , ( EXTRACT_16BITS ( tptr ) >> 15 ) & 0x01 , ( EXTRACT_16BITS ( tptr ) >> 12 ) & 0x07 , EXTRACT_16BITS ( tptr ) & 0x0fff ) ) ; tmp = tmp - 2 ; tptr = tptr + 2 ; if ( tmp ) isis_print_mt_capability_subtlv ( ndo , tptr , tmp ) ; break ; case ISIS_TLV_TE_ROUTER_ID : ND_TCHECK2 ( * pptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Traffic<S2SV_blank>Engineering<S2SV_blank>Router<S2SV_blank>ID:<S2SV_blank>%s\" , ipaddr_string ( ndo , pptr ) ) ) ; break ; case ISIS_TLV_IPADDR : while ( tmp >= sizeof ( struct in_addr ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>interface<S2SV_blank>address:<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tptr += sizeof ( struct in_addr ) ; tmp -= sizeof ( struct in_addr ) ; } break ; case ISIS_TLV_HOSTNAME : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Hostname:<S2SV_blank>\" ) ) ; if ( fn_printzp ( ndo , tptr , tmp , ndo -> ndo_snapend ) ) goto trunctlv ; break ; case ISIS_TLV_SHARED_RISK_GROUP : if ( tmp < NODE_ID_LEN ) break ; ND_TCHECK2 ( * tptr , NODE_ID_LEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IS<S2SV_blank>Neighbor:<S2SV_blank>%s\" , isis_print_id ( tptr , NODE_ID_LEN ) ) ) ; tptr += ( NODE_ID_LEN ) ; tmp -= ( NODE_ID_LEN ) ; if ( tmp < 1 ) break ; ND_TCHECK2 ( * tptr , 1 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags:<S2SV_blank>[%s]\" , ISIS_MASK_TLV_SHARED_RISK_GROUP ( * tptr ++ ) ? \"numbered\" : \"unnumbered\" ) ) ; tmp -- ; if ( tmp < sizeof ( struct in_addr ) ) break ; ND_TCHECK2 ( * tptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>interface<S2SV_blank>address:<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tptr += sizeof ( struct in_addr ) ; tmp -= sizeof ( struct in_addr ) ; if ( tmp < sizeof ( struct in_addr ) ) break ; ND_TCHECK2 ( * tptr , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>neighbor<S2SV_blank>address:<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tptr += sizeof ( struct in_addr ) ; tmp -= sizeof ( struct in_addr ) ; while ( tmp >= 4 ) { ND_TCHECK2 ( * tptr , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Link-ID:<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tptr ) ) ) ; tptr += 4 ; tmp -= 4 ; } break ; case ISIS_TLV_LSP : tlv_lsp = ( const struct isis_tlv_lsp * ) tptr ; while ( tmp >= sizeof ( struct isis_tlv_lsp ) ) { ND_TCHECK ( ( tlv_lsp -> lsp_id ) [ LSP_ID_LEN - 1 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>lsp-id:<S2SV_blank>%s\" , isis_print_id ( tlv_lsp -> lsp_id , LSP_ID_LEN ) ) ) ; ND_TCHECK2 ( tlv_lsp -> sequence_number , 4 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>seq:<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( tlv_lsp -> sequence_number ) ) ) ; ND_TCHECK2 ( tlv_lsp -> remaining_lifetime , 2 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>lifetime:<S2SV_blank>%5ds\" , EXTRACT_16BITS ( tlv_lsp -> remaining_lifetime ) ) ) ; ND_TCHECK2 ( tlv_lsp -> checksum , 2 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>chksum:<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( tlv_lsp -> checksum ) ) ) ; tmp -= sizeof ( struct isis_tlv_lsp ) ; tlv_lsp ++ ; } break ; case ISIS_TLV_CHECKSUM : if ( tmp < ISIS_TLV_CHECKSUM_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_CHECKSUM_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>checksum:<S2SV_blank>0x%04x<S2SV_blank>\" , EXTRACT_16BITS ( tptr ) ) ) ; osi_print_cksum ( ndo , optr , EXTRACT_16BITS ( tptr ) , tptr - optr , length ) ; break ; case ISIS_TLV_POI : if ( tlv_len >= SYSTEM_ID_LEN + 1 ) { ND_TCHECK2 ( * tptr , SYSTEM_ID_LEN + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Purge<S2SV_blank>Originator<S2SV_blank>System-ID:<S2SV_blank>%s\" , isis_print_id ( tptr + 1 , SYSTEM_ID_LEN ) ) ) ; } if ( tlv_len == 2 * SYSTEM_ID_LEN + 1 ) { ND_TCHECK2 ( * tptr , 2 * SYSTEM_ID_LEN + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Received<S2SV_blank>from<S2SV_blank>System-ID:<S2SV_blank>%s\" , isis_print_id ( tptr + SYSTEM_ID_LEN + 1 , SYSTEM_ID_LEN ) ) ) ; } break ; case ISIS_TLV_MT_SUPPORTED : if ( tmp < ISIS_TLV_MT_SUPPORTED_MINLEN ) break ; while ( tmp > 1 ) { if ( tmp != 1 ) { mt_len = isis_print_mtid ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; if ( mt_len == 0 ) goto trunctlv ; tptr += mt_len ; tmp -= mt_len ; } else { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>invalid<S2SV_blank>MT-ID\" ) ) ; break ; } } break ; case ISIS_TLV_RESTART_SIGNALING : if ( tmp < ISIS_TLV_RESTART_SIGNALING_FLAGLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_RESTART_SIGNALING_FLAGLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( isis_restart_flag_values , \"none\" , * tptr ) ) ) ; tptr += ISIS_TLV_RESTART_SIGNALING_FLAGLEN ; tmp -= ISIS_TLV_RESTART_SIGNALING_FLAGLEN ; if ( tmp == 0 ) break ; if ( tmp < ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Remaining<S2SV_blank>holding<S2SV_blank>time<S2SV_blank>%us\" , EXTRACT_16BITS ( tptr ) ) ) ; tptr += ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN ; tmp -= ISIS_TLV_RESTART_SIGNALING_HOLDTIMELEN ; if ( tmp == SYSTEM_ID_LEN ) { ND_TCHECK2 ( * tptr , SYSTEM_ID_LEN ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>for<S2SV_blank>%s\" , isis_print_id ( tptr , SYSTEM_ID_LEN ) ) ) ; } break ; case ISIS_TLV_IDRP_INFO : if ( tmp < ISIS_TLV_IDRP_INFO_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_IDRP_INFO_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Inter-Domain<S2SV_blank>Information<S2SV_blank>Type:<S2SV_blank>%s\" , tok2str ( isis_subtlv_idrp_values , \"Unknown<S2SV_blank>(0x%02x)\" , * tptr ) ) ) ; switch ( * tptr ++ ) { case ISIS_SUBTLV_IDRP_ASN : ND_TCHECK2 ( * tptr , 2 ) ; ND_PRINT ( ( ndo , \"AS<S2SV_blank>Number:<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr ) ) ) ; break ; case ISIS_SUBTLV_IDRP_LOCAL : case ISIS_SUBTLV_IDRP_RES : default : if ( ! print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_len - 1 ) ) return ( 0 ) ; break ; } break ; case ISIS_TLV_LSP_BUFFERSIZE : if ( tmp < ISIS_TLV_LSP_BUFFERSIZE_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_LSP_BUFFERSIZE_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>LSP<S2SV_blank>Buffersize:<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr ) ) ) ; break ; case ISIS_TLV_PART_DIS : while ( tmp >= SYSTEM_ID_LEN ) { ND_TCHECK2 ( * tptr , SYSTEM_ID_LEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , isis_print_id ( tptr , SYSTEM_ID_LEN ) ) ) ; tptr += SYSTEM_ID_LEN ; tmp -= SYSTEM_ID_LEN ; } break ; case ISIS_TLV_PREFIX_NEIGH : if ( tmp < sizeof ( struct isis_metric_block ) ) break ; ND_TCHECK2 ( * tptr , sizeof ( struct isis_metric_block ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Metric<S2SV_blank>Block\" ) ) ; isis_print_metric_block ( ndo , ( const struct isis_metric_block * ) tptr ) ; tptr += sizeof ( struct isis_metric_block ) ; tmp -= sizeof ( struct isis_metric_block ) ; while ( tmp > 0 ) { ND_TCHECK2 ( * tptr , 1 ) ; prefix_len = * tptr ++ ; if ( prefix_len < 2 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tAddress:<S2SV_blank>prefix<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>2\" , prefix_len ) ) ; break ; } tmp -- ; if ( tmp < prefix_len / 2 ) break ; ND_TCHECK2 ( * tptr , prefix_len / 2 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tAddress:<S2SV_blank>%s/%u\" , isonsap_string ( ndo , tptr , prefix_len / 2 ) , prefix_len * 4 ) ) ; tptr += prefix_len / 2 ; tmp -= prefix_len / 2 ; } break ; case ISIS_TLV_IIH_SEQNR : if ( tmp < ISIS_TLV_IIH_SEQNR_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_IIH_SEQNR_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sequence<S2SV_blank>number:<S2SV_blank>%u\" , EXTRACT_32BITS ( tptr ) ) ) ; break ; case ISIS_TLV_VENDOR_PRIVATE : if ( tmp < ISIS_TLV_VENDOR_PRIVATE_MINLEN ) break ; ND_TCHECK2 ( * tptr , ISIS_TLV_VENDOR_PRIVATE_MINLEN ) ; vendor_id = EXTRACT_24BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Vendor:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( oui_values , \"Unknown\" , vendor_id ) , vendor_id ) ) ; tptr += 3 ; tmp -= 3 ; if ( tmp > 0 ) if ( ! print_unknown_data ( ndo , tptr , \"\\\\n\\\\t\\\\t\" , tmp ) ) return ( 0 ) ; break ; case ISIS_TLV_DECNET_PHASE4 : case ISIS_TLV_LUCENT_PRIVATE : case ISIS_TLV_IPAUTH : case ISIS_TLV_NORTEL_PRIVATE1 : case ISIS_TLV_NORTEL_PRIVATE2 : default : if ( ndo -> ndo_vflag <= 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t\\\\t\" , tlv_len ) ) return ( 0 ) ; } break ; } if ( ndo -> ndo_vflag > 1 ) { if ( ! print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_len ) ) return ( 0 ) ; } pptr += tlv_len ; packet_len -= tlv_len ; } if ( packet_len != 0 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>straggler<S2SV_blank>bytes\" , packet_len ) ) ; } return ( 1 ) ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( 1 ) ; trunctlv : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp ) { ND_TCHECK2 ( * tptr , alen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14727\n\n```\nCWE-119 char * logger_get_mask_expanded ( struct t_gui_buffer * buffer , const char * mask ) { <S2SV_StartBug> char * mask2 , * mask_decoded , * mask_decoded2 , * mask_decoded3 , * mask_decoded4 ; <S2SV_EndBug> char * mask_decoded5 ; const char * dir_separator ; int length ; time_t seconds ; struct tm * date_tmp ; mask2 = NULL ; <S2SV_StartBug> mask_decoded = NULL ; <S2SV_EndBug> mask_decoded2 = NULL ; mask_decoded3 = NULL ; mask_decoded4 = NULL ; mask_decoded5 = NULL ; dir_separator = weechat_info_get ( \"dir_separator\" , \"\" ) ; if ( ! dir_separator ) return NULL ; <S2SV_StartBug> mask2 = weechat_string_replace ( mask , dir_separator , \"\\\\01\" ) ; <S2SV_EndBug> if ( ! mask2 ) goto end ; mask_decoded = weechat_buffer_string_replace_local_var ( buffer , mask2 ) ; if ( ! mask_decoded ) goto end ; mask_decoded2 = weechat_string_replace ( mask_decoded , dir_separator , weechat_config_string ( logger_config_file_replacement_char ) ) ; if ( ! mask_decoded2 ) goto end ; # ifdef __CYGWIN__ mask_decoded3 = weechat_string_replace ( mask_decoded2 , \"\\\\\\\\\" , weechat_config_string ( logger_config_file_replacement_char ) ) ; # else mask_decoded3 = strdup ( mask_decoded2 ) ; # endif if ( ! mask_decoded3 ) goto end ; mask_decoded4 = weechat_string_replace ( mask_decoded3 , \"\\\\01\" , dir_separator ) ; if ( ! mask_decoded4 ) goto end ; length = strlen ( mask_decoded4 ) + 256 + 1 ; <S2SV_StartBug> mask_decoded5 = malloc ( length ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! mask_decoded5 ) <S2SV_EndBug> goto end ; seconds = time ( NULL ) ; date_tmp = localtime ( & seconds ) ; <S2SV_StartBug> mask_decoded5 [ 0 ] = '\\\\0' ; <S2SV_EndBug> <S2SV_StartBug> strftime ( mask_decoded5 , length - 1 , mask_decoded4 , date_tmp ) ; <S2SV_EndBug> if ( weechat_config_boolean ( logger_config_file_name_lower_case ) ) <S2SV_StartBug> weechat_string_tolower ( mask_decoded5 ) ; <S2SV_EndBug> if ( weechat_logger_plugin -> debug ) { weechat_printf_date_tags ( NULL , 0 , \"no_log\" , \"%s:<S2SV_blank>buffer<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\",<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\",<S2SV_blank>\" \"decoded<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\"\" , LOGGER_PLUGIN_NAME , weechat_buffer_get_string ( buffer , \"name\" ) , <S2SV_StartBug> mask , mask_decoded5 ) ; <S2SV_EndBug> } end : if ( mask2 ) free ( mask2 ) ; <S2SV_StartBug> if ( mask_decoded ) <S2SV_EndBug> <S2SV_StartBug> free ( mask_decoded ) ; <S2SV_EndBug> if ( mask_decoded2 ) <S2SV_StartBug> free ( mask_decoded2 ) ; <S2SV_EndBug> if ( mask_decoded3 ) <S2SV_StartBug> free ( mask_decoded3 ) ; <S2SV_EndBug> if ( mask_decoded4 ) <S2SV_StartBug> free ( mask_decoded4 ) ; <S2SV_EndBug> <S2SV_StartBug> return mask_decoded5 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mask2 , * mask3 , * mask4 , * mask5 , * mask6 , * mask7 <S2SV_ModEnd> ; const char <S2SV_ModStart> = NULL ; mask3 = NULL ; mask4 = NULL ; mask5 = NULL ; mask6 = NULL ; mask7 <S2SV_ModEnd> = NULL ; <S2SV_ModStart> return NULL ; length = strlen ( mask <S2SV_ModEnd> ) + 256 <S2SV_ModStart> + 1 ; mask2 <S2SV_ModEnd> = malloc ( <S2SV_ModStart> if ( ! mask2 <S2SV_ModEnd> ) goto end <S2SV_ModStart> seconds ) ; mask2 <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = '\\\\0' ; if ( strftime ( mask2 <S2SV_ModEnd> , length - <S2SV_ModStart> - 1 , mask <S2SV_ModEnd> , date_tmp ) <S2SV_ModStart> , date_tmp ) == 0 ) mask2 [ 0 ] = '\\\\0' ; mask3 = weechat_string_replace ( mask2 , dir_separator , \"\\\\01\" ) ; if ( ! mask3 ) goto end ; mask4 = weechat_buffer_string_replace_local_var ( buffer , mask3 ) ; if ( ! mask4 ) goto end ; mask5 = weechat_string_replace ( mask4 , dir_separator , weechat_config_string ( logger_config_file_replacement_char ) ) ; if ( ! mask5 ) goto end ; # ifdef __CYGWIN__ mask6 = weechat_string_replace ( mask5 , \"\\\\\\\\\" , weechat_config_string ( logger_config_file_replacement_char ) ) ; # else mask6 = strdup ( mask5 ) ; # endif if ( ! mask6 ) goto end ; mask7 = weechat_string_replace ( mask6 , \"\\\\01\" , dir_separator ) ; if ( ! mask7 ) goto end <S2SV_ModStart> ) weechat_string_tolower ( mask7 <S2SV_ModEnd> ) ; if <S2SV_ModStart> , mask , mask7 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; if ( mask3 <S2SV_ModEnd> ) free ( <S2SV_ModStart> ) free ( mask3 ) ; if ( mask4 <S2SV_ModEnd> ) free ( <S2SV_ModStart> ) free ( mask4 ) ; if ( mask5 <S2SV_ModEnd> ) free ( <S2SV_ModStart> ) free ( mask5 ) ; if ( mask6 <S2SV_ModEnd> ) free ( <S2SV_ModStart> ) free ( mask6 <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return mask7 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15900\n\n```\nCWE-119 static int search_impl ( i_ctx_t * i_ctx_p , bool forward ) { os_ptr op = osp ; os_ptr op1 = op - 1 ; uint size = r_size ( op ) ; uint count ; byte * pat ; byte * ptr ; byte ch ; int incr = forward ? 1 : - 1 ; check_read_type ( * op1 , t_string ) ; check_read_type ( * op , t_string ) ; if ( size > r_size ( op1 ) ) { make_false ( op ) ; return 0 ; } count = r_size ( op1 ) - size ; ptr = op1 -> value . bytes ; if ( size == 0 ) goto found ; if ( ! forward ) ptr += count ; pat = op -> value . bytes ; ch = pat [ 0 ] ; do { if ( * ptr == ch && ( size == 1 || ! memcmp ( ptr , pat , size ) ) ) goto found ; ptr += incr ; } while ( count -- ) ; make_false ( op ) ; return 0 ; found : op -> tas . type_attrs = op1 -> tas . type_attrs ; op -> value . bytes = ptr ; <S2SV_StartBug> r_set_size ( op , size ) ; <S2SV_EndBug> push ( 2 ) ; op [ - 1 ] = * op1 ; <S2SV_StartBug> r_set_size ( op - 1 , ptr - op [ - 1 ] . value . bytes ) ; <S2SV_EndBug> op1 -> value . bytes = ptr + size ; <S2SV_StartBug> r_set_size ( op1 , count + ( ! forward ? ( size - 1 ) : 0 ) ) ; <S2SV_EndBug> make_true ( op ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = ptr ; op -> tas . rsize = size <S2SV_ModEnd> ; push ( <S2SV_ModStart> * op1 ; op [ - 3 ] . <S2SV_ModEnd> value . bytes <S2SV_ModStart> + size ; if ( forward ) { op [ - 1 ] . tas . rsize = ptr - op [ - 1 ] . value . bytes ; op [ - 3 ] . tas . rsize = count ; } else { op [ - 1 ] . tas . rsize = count ; op [ - 3 ] . tas . rsize -= count + size ; } <S2SV_ModEnd> make_true ( op\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15924\n\n```\nCWE-78 static char * construct_command_line ( struct manager_ctx * manager , struct server * server ) { static char cmd [ BUF_SIZE ] ; <S2SV_StartBug> char * method = manager -> method ; <S2SV_EndBug> int i ; <S2SV_StartBug> build_config ( working_dir , server ) ; <S2SV_EndBug> if ( server -> method ) method = server -> method ; memset ( cmd , 0 , BUF_SIZE ) ; snprintf ( cmd , BUF_SIZE , <S2SV_StartBug> \"%s<S2SV_blank>-m<S2SV_blank>%s<S2SV_blank>--manager-address<S2SV_blank>%s<S2SV_blank>-f<S2SV_blank>%s/.shadowsocks_%s.pid<S2SV_blank>-c<S2SV_blank>%s/.shadowsocks_%s.conf\" , <S2SV_EndBug> <S2SV_StartBug> executable , method , manager -> manager_address , <S2SV_EndBug> <S2SV_StartBug> working_dir , server -> port , working_dir , server -> port ) ; <S2SV_EndBug> if ( manager -> acl != NULL ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--acl<S2SV_blank>%s\" , manager -> acl ) ; } if ( manager -> timeout != NULL ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-t<S2SV_blank>%s\" , manager -> timeout ) ; } # ifdef HAVE_SETRLIMIT if ( manager -> nofile ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-n<S2SV_blank>%d\" , manager -> nofile ) ; } # endif if ( manager -> user != NULL ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-a<S2SV_blank>%s\" , manager -> user ) ; } if ( manager -> verbose ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-v\" ) ; } if ( server -> mode == NULL && manager -> mode == UDP_ONLY ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-U\" ) ; } if ( server -> mode == NULL && manager -> mode == TCP_AND_UDP ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-u\" ) ; } if ( server -> fast_open [ 0 ] == 0 && manager -> fast_open ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--fast-open\" ) ; } if ( manager -> ipv6first ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-6\" ) ; } if ( manager -> mtu ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--mtu<S2SV_blank>%d\" , manager -> mtu ) ; } if ( server -> plugin == NULL && manager -> plugin ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--plugin<S2SV_blank>\\\\\"%s\\\\\"\" , manager -> plugin ) ; } if ( server -> plugin_opts == NULL && manager -> plugin_opts ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--plugin-opts<S2SV_blank>\\\\\"%s\\\\\"\" , manager -> plugin_opts ) ; } for ( i = 0 ; i < manager -> nameserver_num ; i ++ ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-d<S2SV_blank>%s\" , manager -> nameservers [ i ] ) ; } for ( i = 0 ; i < manager -> host_num ; i ++ ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-s<S2SV_blank>%s\" , manager -> hosts [ i ] ) ; } { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--reuse-port\" ) ; } if ( verbose ) { LOGI ( \"cmd:<S2SV_blank>%s\" , cmd ) ; } return cmd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BUF_SIZE ] ; int i ; int port ; port = atoi ( server -> port ) <S2SV_ModEnd> ; build_config ( <S2SV_ModStart> ( working_dir , manager , server ) <S2SV_ModEnd> ; memset ( <S2SV_ModStart> , BUF_SIZE , \"%s<S2SV_blank>--manager-address<S2SV_blank>%s<S2SV_blank>-f<S2SV_blank>%s/.shadowsocks_%d.pid<S2SV_blank>-c<S2SV_blank>%s/.shadowsocks_%d.conf\" <S2SV_ModEnd> , executable , <S2SV_ModStart> , executable , <S2SV_ModEnd> manager -> manager_address <S2SV_ModStart> , working_dir , <S2SV_ModEnd> port , working_dir <S2SV_ModStart> , working_dir , <S2SV_ModEnd> port ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8956\n\n```\nCWE-476 static int rfcomm_sock_bind ( struct socket * sock , struct sockaddr * addr , int addr_len ) { <S2SV_StartBug> struct sockaddr_rc * sa = ( struct sockaddr_rc * ) addr ; <S2SV_EndBug> struct sock * sk = sock -> sk ; <S2SV_StartBug> int chan = sa -> rc_channel ; <S2SV_EndBug> <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> BT_DBG ( \"sk<S2SV_blank>%p<S2SV_blank>%pMR\" , sk , & sa -> rc_bdaddr ) ; if ( ! addr || addr -> sa_family != AF_BLUETOOTH ) return - EINVAL ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> if ( sk -> sk_state != BT_OPEN ) { err = - EBADFD ; goto done ; } if ( sk -> sk_type != SOCK_STREAM ) { err = - EINVAL ; goto done ; } write_lock ( & rfcomm_sk_list . lock ) ; <S2SV_StartBug> if ( chan && __rfcomm_get_listen_sock_by_addr ( chan , & sa -> rc_bdaddr ) ) { <S2SV_EndBug> err = - EADDRINUSE ; } else { <S2SV_StartBug> bacpy ( & rfcomm_pi ( sk ) -> src , & sa -> rc_bdaddr ) ; <S2SV_EndBug> <S2SV_StartBug> rfcomm_pi ( sk ) -> channel = chan ; <S2SV_EndBug> sk -> sk_state = BT_BOUND ; } write_unlock ( & rfcomm_sk_list . lock ) ; done : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct sockaddr_rc sa <S2SV_ModEnd> ; struct sock <S2SV_ModStart> sk ; int len , <S2SV_ModEnd> err = 0 <S2SV_ModStart> err = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> - EINVAL ; memset ( & sa , 0 , sizeof ( sa ) ) ; len = min_t ( unsigned int , sizeof ( sa ) , addr_len ) ; memcpy ( & sa , addr , len ) ; BT_DBG ( \"sk<S2SV_blank>%p<S2SV_blank>%pMR\" , sk , & sa . rc_bdaddr ) ; <S2SV_ModStart> ; if ( sa . rc_channel <S2SV_ModEnd> && __rfcomm_get_listen_sock_by_addr ( <S2SV_ModStart> && __rfcomm_get_listen_sock_by_addr ( sa . rc_channel , & sa . <S2SV_ModEnd> rc_bdaddr ) ) <S2SV_ModStart> , & sa . <S2SV_ModEnd> rc_bdaddr ) ; <S2SV_ModStart> -> channel = sa . rc_channel <S2SV_ModEnd> ; sk ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9566\n\n```\nCWE-264 <S2SV_StartBug> int open_debug_log ( void ) { <S2SV_EndBug> if ( verify_config || test_scheduling == TRUE ) return OK ; if ( debug_level == DEBUGL_NONE ) return OK ; <S2SV_StartBug> if ( ( debug_file_fp = fopen ( debug_file , \"a+\" ) ) == NULL ) <S2SV_EndBug> return ERROR ; <S2SV_StartBug> ( void ) fcntl ( fileno ( debug_file_fp ) , F_SETFD , FD_CLOEXEC ) ; <S2SV_EndBug> return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { int fh ; struct stat st ; <S2SV_ModStart> if ( ( fh = open ( debug_file , O_RDWR | O_APPEND | O_CREAT | O_NOFOLLOW , S_IRUSR | S_IWUSR ) ) == - 1 ) return ERROR ; if ( ( debug_file_fp = fdopen ( fh <S2SV_ModEnd> , \"a+\" ) <S2SV_ModStart> return ERROR ; if ( ( fstat ( fh , & st ) ) == - 1 ) { debug_file_fp = NULL ; close ( fh ) ; return ERROR ; } if ( st . st_nlink != 1 || ( st . st_mode & S_IFMT ) != S_IFREG ) { debug_file_fp = NULL ; close ( fh ) ; return ERROR ; } <S2SV_ModStart> ) fcntl ( fh <S2SV_ModEnd> , F_SETFD ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9870\n\n```\nCWE-264 long arch_ptrace ( struct task_struct * child , long request , unsigned long addr , unsigned long data ) { int ret ; unsigned long __user * datap = ( unsigned long __user * ) data ; switch ( request ) { case PTRACE_PEEKUSR : ret = ptrace_read_user ( child , addr , datap ) ; break ; case PTRACE_POKEUSR : ret = ptrace_write_user ( child , addr , data ) ; break ; case PTRACE_GETREGS : ret = copy_regset_to_user ( child , & user_arm_view , REGSET_GPR , 0 , sizeof ( struct pt_regs ) , datap ) ; break ; case PTRACE_SETREGS : ret = copy_regset_from_user ( child , & user_arm_view , REGSET_GPR , 0 , sizeof ( struct pt_regs ) , datap ) ; break ; case PTRACE_GETFPREGS : ret = copy_regset_to_user ( child , & user_arm_view , REGSET_FPR , 0 , sizeof ( union fp_state ) , datap ) ; break ; case PTRACE_SETFPREGS : ret = copy_regset_from_user ( child , & user_arm_view , REGSET_FPR , 0 , sizeof ( union fp_state ) , datap ) ; break ; # ifdef CONFIG_IWMMXT case PTRACE_GETWMMXREGS : ret = ptrace_getwmmxregs ( child , datap ) ; break ; case PTRACE_SETWMMXREGS : ret = ptrace_setwmmxregs ( child , datap ) ; break ; # endif case PTRACE_GET_THREAD_AREA : <S2SV_StartBug> ret = put_user ( task_thread_info ( child ) -> tp_value , <S2SV_EndBug> datap ) ; break ; case PTRACE_SET_SYSCALL : task_thread_info ( child ) -> syscall = data ; ret = 0 ; break ; # ifdef CONFIG_CRUNCH case PTRACE_GETCRUNCHREGS : ret = ptrace_getcrunchregs ( child , datap ) ; break ; case PTRACE_SETCRUNCHREGS : ret = ptrace_setcrunchregs ( child , datap ) ; break ; # endif # ifdef CONFIG_VFP case PTRACE_GETVFPREGS : ret = copy_regset_to_user ( child , & user_arm_view , REGSET_VFP , 0 , ARM_VFPREGS_SIZE , datap ) ; break ; case PTRACE_SETVFPREGS : ret = copy_regset_from_user ( child , & user_arm_view , REGSET_VFP , 0 , ARM_VFPREGS_SIZE , datap ) ; break ; # endif # ifdef CONFIG_HAVE_HW_BREAKPOINT case PTRACE_GETHBPREGS : if ( ptrace_get_breakpoints ( child ) < 0 ) return - ESRCH ; ret = ptrace_gethbpregs ( child , addr , ( unsigned long __user * ) data ) ; ptrace_put_breakpoints ( child ) ; break ; case PTRACE_SETHBPREGS : if ( ptrace_get_breakpoints ( child ) < 0 ) return - ESRCH ; ret = ptrace_sethbpregs ( child , addr , ( unsigned long __user * ) data ) ; ptrace_put_breakpoints ( child ) ; break ; # endif default : ret = ptrace_request ( child , request , addr , data ) ; break ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) -> tp_value [ 0 ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9763\n\n```\nCWE-119 void grubfs_free ( GrubFS * gf ) { if ( gf ) { <S2SV_StartBug> if ( gf -> file && gf -> file -> device ) <S2SV_EndBug> <S2SV_StartBug> free ( gf -> file -> device -> disk ) ; <S2SV_EndBug> free ( gf -> file ) ; free ( gf ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> device ) { <S2SV_ModStart> disk ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7115\n\n```\nCWE-119 int mndp_add_attribute ( struct mt_packet * packet , enum mt_mndp_attrtype attrtype , void * attrdata , unsigned short data_len ) { unsigned char * data = packet -> data + packet -> size ; unsigned short type = attrtype ; unsigned short len = data_len ; <S2SV_StartBug> if ( packet -> size + 4 + data_len > MT_PACKET_LEN ) { <S2SV_EndBug> fprintf ( stderr , _ ( \"mndp_add_attribute:<S2SV_blank>ERROR,<S2SV_blank>too<S2SV_blank>large<S2SV_blank>packet.<S2SV_blank>Exceeds<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" ) , MT_PACKET_LEN ) ; return - 1 ; } type = htons ( type ) ; memcpy ( data , & type , sizeof ( type ) ) ; len = htons ( len ) ; memcpy ( data + 2 , & len , sizeof ( len ) ) ; memcpy ( data + 4 , attrdata , data_len ) ; packet -> size += 4 + data_len ; return 4 + data_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( data_len > MT_PACKET_LEN - 4 - <S2SV_ModStart> packet -> size <S2SV_ModEnd> ) { fprintf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21261\n\n```\nCWE-74 static void child_setup_func ( gpointer user_data ) { ChildSetupData * data = ( ChildSetupData * ) user_data ; FdMapEntry * fd_map = data -> fd_map ; sigset_t set ; int i ; flatpak_close_fds_workaround ( 3 ) ; if ( data -> instance_id_fd != - 1 ) <S2SV_StartBug> drop_cloexec ( data -> instance_id_fd ) ; <S2SV_EndBug> sigemptyset ( & set ) ; if ( pthread_sigmask ( SIG_SETMASK , & set , NULL ) == - 1 ) { g_warning ( \"Failed<S2SV_blank>to<S2SV_blank>unblock<S2SV_blank>signals<S2SV_blank>when<S2SV_blank>starting<S2SV_blank>child\" ) ; return ; } for ( i = 1 ; i < NSIG ; i ++ ) { if ( i != SIGSTOP && i != SIGKILL ) signal ( i , SIG_DFL ) ; } for ( i = 0 ; i < data -> fd_map_len ; i ++ ) { if ( fd_map [ i ] . from != fd_map [ i ] . to ) { dup2 ( fd_map [ i ] . from , fd_map [ i ] . to ) ; close ( fd_map [ i ] . from ) ; } } for ( i = 0 ; i < data -> fd_map_len ; i ++ ) { if ( fd_map [ i ] . to != fd_map [ i ] . final ) { dup2 ( fd_map [ i ] . to , fd_map [ i ] . final ) ; close ( fd_map [ i ] . to ) ; } drop_cloexec ( fd_map [ i ] . final ) ; } setsid ( ) ; setpgid ( 0 , 0 ) ; if ( data -> set_tty ) { for ( i = 0 ; i < data -> fd_map_len ; i ++ ) { if ( fd_map [ i ] . from == data -> tty ) { if ( ioctl ( fd_map [ i ] . final , TIOCSCTTY , 0 ) == - 1 ) g_debug ( \"ioctl(%d,<S2SV_blank>TIOCSCTTY,<S2SV_blank>0)<S2SV_blank>failed:<S2SV_blank>%s\" , fd_map [ i ] . final , strerror ( errno ) ) ; break ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data -> instance_id_fd ) ; if ( data -> env_fd != - 1 ) drop_cloexec ( data -> env_fd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void initialize_encoder ( struct stream_state * stream , struct VpxEncoderConfig * global ) { int i ; int flags = 0 ; flags |= global -> show_psnr ? VPX_CODEC_USE_PSNR : 0 ; flags |= global -> out_part ? VPX_CODEC_USE_OUTPUT_PARTITION : 0 ; <S2SV_StartBug> vpx_codec_enc_init ( & stream -> encoder , global -> codec -> interface ( ) , <S2SV_EndBug> & stream -> config . cfg , flags ) ; ctx_exit_on_error ( & stream -> encoder , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>encoder\" ) ; for ( i = 0 ; i < stream -> config . arg_ctrl_cnt ; i ++ ) { int ctrl = stream -> config . arg_ctrls [ i ] [ 0 ] ; int value = stream -> config . arg_ctrls [ i ] [ 1 ] ; if ( vpx_codec_control_ ( & stream -> encoder , ctrl , value ) ) fprintf ( stderr , \"Error:<S2SV_blank>Tried<S2SV_blank>to<S2SV_blank>set<S2SV_blank>control<S2SV_blank>%d<S2SV_blank>=<S2SV_blank>%d\\\\n\" , ctrl , value ) ; ctx_exit_on_error ( & stream -> encoder , \"Failed<S2SV_blank>to<S2SV_blank>control<S2SV_blank>codec\" ) ; } # if CONFIG_DECODERS if ( global -> test_decode != TEST_DECODE_OFF ) { const VpxInterface * decoder = get_vpx_decoder_by_name ( global -> codec -> name ) ; <S2SV_StartBug> vpx_codec_dec_init ( & stream -> decoder , decoder -> interface ( ) , NULL , 0 ) ; <S2SV_EndBug> } # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : 0 ; # if CONFIG_VP9_HIGHBITDEPTH flags |= stream -> config . use_16bit_internal ? VPX_CODEC_USE_HIGHBITDEPTH : 0 ; # endif <S2SV_ModStart> -> codec -> codec_interface <S2SV_ModEnd> ( ) , <S2SV_ModStart> , decoder -> codec_interface <S2SV_ModEnd> ( ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15919\n\n```\nCWE-416 int SMB2_write ( const unsigned int xid , struct cifs_io_parms * io_parms , unsigned int * nbytes , struct kvec * iov , int n_vec ) { struct smb_rqst rqst ; int rc = 0 ; struct smb2_write_req * req = NULL ; struct smb2_write_rsp * rsp = NULL ; int resp_buftype ; struct kvec rsp_iov ; int flags = 0 ; unsigned int total_len ; * nbytes = 0 ; if ( n_vec < 1 ) return rc ; rc = smb2_plain_req_init ( SMB2_WRITE , io_parms -> tcon , ( void * * ) & req , & total_len ) ; if ( rc ) return rc ; if ( io_parms -> tcon -> ses -> server == NULL ) return - ECONNABORTED ; if ( smb3_encryption_required ( io_parms -> tcon ) ) flags |= CIFS_TRANSFORM_REQ ; req -> sync_hdr . ProcessId = cpu_to_le32 ( io_parms -> pid ) ; req -> PersistentFileId = io_parms -> persistent_fid ; req -> VolatileFileId = io_parms -> volatile_fid ; req -> WriteChannelInfoOffset = 0 ; req -> WriteChannelInfoLength = 0 ; req -> Channel = 0 ; req -> Length = cpu_to_le32 ( io_parms -> length ) ; req -> Offset = cpu_to_le64 ( io_parms -> offset ) ; req -> DataOffset = cpu_to_le16 ( offsetof ( struct smb2_write_req , Buffer ) ) ; req -> RemainingBytes = 0 ; trace_smb3_write_enter ( xid , io_parms -> persistent_fid , io_parms -> tcon -> tid , io_parms -> tcon -> ses -> Suid , io_parms -> offset , io_parms -> length ) ; iov [ 0 ] . iov_base = ( char * ) req ; iov [ 0 ] . iov_len = total_len - 1 ; memset ( & rqst , 0 , sizeof ( struct smb_rqst ) ) ; rqst . rq_iov = iov ; rqst . rq_nvec = n_vec + 1 ; rc = cifs_send_recv ( xid , io_parms -> tcon -> ses , & rqst , & resp_buftype , flags , & rsp_iov ) ; <S2SV_StartBug> cifs_small_buf_release ( req ) ; <S2SV_EndBug> rsp = ( struct smb2_write_rsp * ) rsp_iov . iov_base ; if ( rc ) { trace_smb3_write_err ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , io_parms -> tcon -> ses -> Suid , io_parms -> offset , io_parms -> length , rc ) ; cifs_stats_fail_inc ( io_parms -> tcon , SMB2_WRITE_HE ) ; cifs_dbg ( VFS , \"Send<S2SV_blank>error<S2SV_blank>in<S2SV_blank>write<S2SV_blank>=<S2SV_blank>%d\\\\n\" , rc ) ; } else { * nbytes = le32_to_cpu ( rsp -> DataLength ) ; trace_smb3_write_done ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , io_parms -> tcon -> ses -> Suid , io_parms -> offset , * nbytes ) ; } <S2SV_StartBug> free_rsp_buf ( resp_buftype , rsp ) ; <S2SV_EndBug> return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rsp_iov ) ; <S2SV_ModEnd> rsp = ( <S2SV_ModStart> ) ; } cifs_small_buf_release ( req ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9620\n\n```\nCWE-399 protected struct magic_set * file_ms_alloc ( int flags ) { struct magic_set * ms ; size_t i , len ; if ( ( ms = CAST ( struct magic_set * , calloc ( ( size_t ) 1 , sizeof ( struct magic_set ) ) ) ) == NULL ) return NULL ; if ( magic_setflags ( ms , flags ) == - 1 ) { errno = EINVAL ; goto free ; } ms -> o . buf = ms -> o . pbuf = NULL ; len = ( ms -> c . len = 10 ) * sizeof ( * ms -> c . li ) ; if ( ( ms -> c . li = CAST ( struct level_info * , malloc ( len ) ) ) == NULL ) goto free ; ms -> event_flags = 0 ; ms -> error = - 1 ; for ( i = 0 ; i < MAGIC_SETS ; i ++ ) ms -> mlist [ i ] = NULL ; ms -> file = \"unknown\" ; ms -> line = 0 ; ms -> indir_max = FILE_INDIR_MAX ; ms -> name_max = FILE_NAME_MAX ; ms -> elf_shnum_max = FILE_ELF_SHNUM_MAX ; ms -> elf_phnum_max = FILE_ELF_PHNUM_MAX ; <S2SV_StartBug> return ms ; <S2SV_EndBug> free : free ( ms ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = FILE_ELF_PHNUM_MAX ; ms -> elf_notes_max = FILE_ELF_NOTES_MAX ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15090\n\n```\nCWE-125 void qedi_dbg_notice ( struct qedi_dbg_ctx * qedi , const char * func , u32 line , const char * fmt , ... ) { va_list va ; <S2SV_StartBug> struct va_format vaf ; <S2SV_EndBug> char nfunc [ 32 ] ; memset ( nfunc , 0 , sizeof ( nfunc ) ) ; memcpy ( nfunc , func , sizeof ( nfunc ) - 1 ) ; va_start ( va , fmt ) ; vaf . fmt = fmt ; vaf . va = & va ; if ( ! ( qedi_dbg_log & QEDI_LOG_NOTICE ) ) goto ret ; if ( likely ( qedi ) && likely ( qedi -> pdev ) ) pr_notice ( \"[%s]:[%s:%d]:%d:<S2SV_blank>%pV\" , <S2SV_StartBug> dev_name ( & qedi -> pdev -> dev ) , nfunc , line , <S2SV_EndBug> qedi -> host_no , & vaf ) ; else <S2SV_StartBug> pr_notice ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , nfunc , line , & vaf ) ; <S2SV_EndBug> ret : va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct va_format vaf <S2SV_ModEnd> ; va_start ( <S2SV_ModStart> dev ) , func <S2SV_ModEnd> , line , <S2SV_ModStart> ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , func <S2SV_ModEnd> , line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000041\n\n```\nCWE-000 gchar * _rsvg_io_get_file_path ( const gchar * filename , const gchar * base_uri ) { gchar * absolute_filename ; <S2SV_StartBug> if ( g_file_test ( filename , G_FILE_TEST_EXISTS ) || g_path_is_absolute ( filename ) ) { <S2SV_EndBug> absolute_filename = g_strdup ( filename ) ; } else { gchar * tmpcdir ; gchar * base_filename ; if ( base_uri ) { base_filename = g_filename_from_uri ( base_uri , NULL , NULL ) ; if ( base_filename != NULL ) { tmpcdir = g_path_get_dirname ( base_filename ) ; g_free ( base_filename ) ; } else return NULL ; } else tmpcdir = g_get_current_dir ( ) ; absolute_filename = g_build_filename ( tmpcdir , filename , NULL ) ; g_free ( tmpcdir ) ; } return absolute_filename ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> g_path_is_absolute ( filename\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8812\n\n```\nCWE-000 int iwch_cxgb3_ofld_send ( struct t3cdev * tdev , struct sk_buff * skb ) { int error = 0 ; struct cxio_rdev * rdev ; rdev = ( struct cxio_rdev * ) tdev -> ulp ; if ( cxio_fatal_error ( rdev ) ) { kfree_skb ( skb ) ; return - EIO ; } error = cxgb3_ofld_send ( tdev , skb ) ; if ( error < 0 ) kfree_skb ( skb ) ; <S2SV_StartBug> return error ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return error < 0 ? error : 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10129\n\n```\nCWE-476 int git_pkt_parse_line ( git_pkt * * head , const char * line , const char * * out , size_t bufflen ) { int ret ; int32_t len ; if ( bufflen > 0 && bufflen < PKT_LEN_SIZE ) return GIT_EBUFS ; len = parse_len ( line ) ; if ( len < 0 ) { if ( bufflen >= 4 && ! git__prefixcmp ( line , \"PACK\" ) ) { giterr_clear ( ) ; * out = line ; return pack_pkt ( head ) ; } return ( int ) len ; } if ( bufflen > 0 && bufflen < ( size_t ) len ) return GIT_EBUFS ; if ( len != 0 && len < PKT_LEN_SIZE ) return GIT_ERROR ; line += PKT_LEN_SIZE ; if ( len == PKT_LEN_SIZE ) { <S2SV_StartBug> * head = NULL ; <S2SV_EndBug> * out = line ; return 0 ; } if ( len == 0 ) { * out = line ; return flush_pkt ( head ) ; } len -= PKT_LEN_SIZE ; if ( * line == GIT_SIDE_BAND_DATA ) ret = data_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_PROGRESS ) ret = sideband_progress_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_ERROR ) ret = sideband_error_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ACK\" ) ) ret = ack_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"NAK\" ) ) ret = nak_pkt ( head ) ; else if ( ! git__prefixcmp ( line , \"ERR<S2SV_blank>\" ) ) ret = err_pkt ( head , line , len ) ; else if ( * line == '#' ) ret = comment_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ok\" ) ) ret = ok_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ng\" ) ) ret = ng_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"unpack\" ) ) ret = unpack_pkt ( head , line , len ) ; else ret = ref_pkt ( head , line , len ) ; * out = line + len ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PKT_LEN_SIZE ) { giterr_set_str ( GITERR_NET , \"Invalid<S2SV_blank>empty<S2SV_blank>packet\" ) ; return GIT_ERROR <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9120\n\n```\nCWE-416 <S2SV_StartBug> static struct ion_handle * ion_handle_get_by_id ( struct ion_client * client , <S2SV_EndBug> int id ) { struct ion_handle * handle ; mutex_lock ( & client -> lock ) ; <S2SV_StartBug> handle = idr_find ( & client -> idr , id ) ; <S2SV_EndBug> if ( handle ) ion_handle_get ( handle ) ; mutex_unlock ( & client -> lock ) ; <S2SV_StartBug> return handle ? handle : ERR_PTR ( - EINVAL ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> struct ion_handle * <S2SV_ModStart> ; handle = ion_handle_get_by_id_nolock ( client , id <S2SV_ModEnd> ) ; mutex_unlock <S2SV_ModStart> ; return handle <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15918\n\n```\nCWE-125 int SMB2_negotiate ( const unsigned int xid , struct cifs_ses * ses ) { struct smb_rqst rqst ; struct smb2_negotiate_req * req ; struct smb2_negotiate_rsp * rsp ; struct kvec iov [ 1 ] ; struct kvec rsp_iov ; int rc = 0 ; int resp_buftype ; struct TCP_Server_Info * server = ses -> server ; int blob_offset , blob_length ; char * security_blob ; int flags = CIFS_NEG_OP ; unsigned int total_len ; cifs_dbg ( FYI , \"Negotiate<S2SV_blank>protocol\\\\n\" ) ; if ( ! server ) { WARN ( 1 , \"%s:<S2SV_blank>server<S2SV_blank>is<S2SV_blank>NULL!\\\\n\" , __func__ ) ; return - EIO ; } rc = smb2_plain_req_init ( SMB2_NEGOTIATE , NULL , ( void * * ) & req , & total_len ) ; if ( rc ) return rc ; req -> sync_hdr . SessionId = 0 ; memset ( server -> preauth_sha_hash , 0 , SMB2_PREAUTH_HASH_SIZE ) ; memset ( ses -> preauth_sha_hash , 0 , SMB2_PREAUTH_HASH_SIZE ) ; if ( strcmp ( ses -> server -> vals -> version_string , SMB3ANY_VERSION_STRING ) == 0 ) { req -> Dialects [ 0 ] = cpu_to_le16 ( SMB30_PROT_ID ) ; req -> Dialects [ 1 ] = cpu_to_le16 ( SMB302_PROT_ID ) ; req -> DialectCount = cpu_to_le16 ( 2 ) ; total_len += 4 ; } else if ( strcmp ( ses -> server -> vals -> version_string , SMBDEFAULT_VERSION_STRING ) == 0 ) { req -> Dialects [ 0 ] = cpu_to_le16 ( SMB21_PROT_ID ) ; req -> Dialects [ 1 ] = cpu_to_le16 ( SMB30_PROT_ID ) ; req -> Dialects [ 2 ] = cpu_to_le16 ( SMB302_PROT_ID ) ; req -> Dialects [ 3 ] = cpu_to_le16 ( SMB311_PROT_ID ) ; req -> DialectCount = cpu_to_le16 ( 4 ) ; total_len += 8 ; } else { req -> Dialects [ 0 ] = cpu_to_le16 ( ses -> server -> vals -> protocol_id ) ; req -> DialectCount = cpu_to_le16 ( 1 ) ; total_len += 2 ; } if ( ses -> sign ) req -> SecurityMode = cpu_to_le16 ( SMB2_NEGOTIATE_SIGNING_REQUIRED ) ; else if ( global_secflags & CIFSSEC_MAY_SIGN ) req -> SecurityMode = cpu_to_le16 ( SMB2_NEGOTIATE_SIGNING_ENABLED ) ; else req -> SecurityMode = 0 ; req -> Capabilities = cpu_to_le32 ( ses -> server -> vals -> req_capabilities ) ; if ( ses -> server -> vals -> protocol_id == SMB20_PROT_ID ) memset ( req -> ClientGUID , 0 , SMB2_CLIENT_GUID_SIZE ) ; else { memcpy ( req -> ClientGUID , server -> client_guid , SMB2_CLIENT_GUID_SIZE ) ; if ( ( ses -> server -> vals -> protocol_id == SMB311_PROT_ID ) || ( strcmp ( ses -> server -> vals -> version_string , SMBDEFAULT_VERSION_STRING ) == 0 ) ) assemble_neg_contexts ( req , & total_len ) ; } iov [ 0 ] . iov_base = ( char * ) req ; iov [ 0 ] . iov_len = total_len ; memset ( & rqst , 0 , sizeof ( struct smb_rqst ) ) ; rqst . rq_iov = iov ; rqst . rq_nvec = 1 ; rc = cifs_send_recv ( xid , ses , & rqst , & resp_buftype , flags , & rsp_iov ) ; cifs_small_buf_release ( req ) ; rsp = ( struct smb2_negotiate_rsp * ) rsp_iov . iov_base ; if ( rc == - EOPNOTSUPP ) { cifs_dbg ( VFS , \"Dialect<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>server.<S2SV_blank>Consider<S2SV_blank>\" \"specifying<S2SV_blank>vers=1.0<S2SV_blank>or<S2SV_blank>vers=2.0<S2SV_blank>on<S2SV_blank>mount<S2SV_blank>for<S2SV_blank>accessing\" \"<S2SV_blank>older<S2SV_blank>servers\\\\n\" ) ; goto neg_exit ; } else if ( rc != 0 ) goto neg_exit ; if ( strcmp ( ses -> server -> vals -> version_string , SMB3ANY_VERSION_STRING ) == 0 ) { if ( rsp -> DialectRevision == cpu_to_le16 ( SMB20_PROT_ID ) ) { cifs_dbg ( VFS , \"SMB2<S2SV_blank>dialect<S2SV_blank>returned<S2SV_blank>but<S2SV_blank>not<S2SV_blank>requested\\\\n\" ) ; return - EIO ; } else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB21_PROT_ID ) ) { cifs_dbg ( VFS , \"SMB2.1<S2SV_blank>dialect<S2SV_blank>returned<S2SV_blank>but<S2SV_blank>not<S2SV_blank>requested\\\\n\" ) ; return - EIO ; } } else if ( strcmp ( ses -> server -> vals -> version_string , SMBDEFAULT_VERSION_STRING ) == 0 ) { if ( rsp -> DialectRevision == cpu_to_le16 ( SMB20_PROT_ID ) ) { cifs_dbg ( VFS , \"SMB2<S2SV_blank>dialect<S2SV_blank>returned<S2SV_blank>but<S2SV_blank>not<S2SV_blank>requested\\\\n\" ) ; return - EIO ; } else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB21_PROT_ID ) ) { ses -> server -> ops = & smb21_operations ; <S2SV_StartBug> } else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB311_PROT_ID ) ) <S2SV_EndBug> <S2SV_StartBug> ses -> server -> ops = & smb311_operations ; <S2SV_EndBug> } else if ( le16_to_cpu ( rsp -> DialectRevision ) != ses -> server -> vals -> protocol_id ) { cifs_dbg ( VFS , \"Illegal<S2SV_blank>0x%x<S2SV_blank>dialect<S2SV_blank>returned:<S2SV_blank>not<S2SV_blank>requested\\\\n\" , le16_to_cpu ( rsp -> DialectRevision ) ) ; return - EIO ; } cifs_dbg ( FYI , \"mode<S2SV_blank>0x%x\\\\n\" , rsp -> SecurityMode ) ; if ( rsp -> DialectRevision == cpu_to_le16 ( SMB20_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb2.0<S2SV_blank>dialect\\\\n\" ) ; else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB21_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb2.1<S2SV_blank>dialect\\\\n\" ) ; else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB30_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb3.0<S2SV_blank>dialect\\\\n\" ) ; else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB302_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb3.02<S2SV_blank>dialect\\\\n\" ) ; else if ( rsp -> DialectRevision == cpu_to_le16 ( SMB311_PROT_ID ) ) cifs_dbg ( FYI , \"negotiated<S2SV_blank>smb3.1.1<S2SV_blank>dialect\\\\n\" ) ; else { cifs_dbg ( VFS , \"Illegal<S2SV_blank>dialect<S2SV_blank>returned<S2SV_blank>by<S2SV_blank>server<S2SV_blank>0x%x\\\\n\" , le16_to_cpu ( rsp -> DialectRevision ) ) ; rc = - EIO ; goto neg_exit ; } server -> dialect = le16_to_cpu ( rsp -> DialectRevision ) ; memcpy ( server -> preauth_sha_hash , ses -> preauth_sha_hash , SMB2_PREAUTH_HASH_SIZE ) ; server -> negflavor = CIFS_NEGFLAVOR_EXTENDED ; server -> maxBuf = min_t ( unsigned int , le32_to_cpu ( rsp -> MaxTransactSize ) , SMB2_MAX_BUFFER_SIZE ) ; server -> max_read = le32_to_cpu ( rsp -> MaxReadSize ) ; server -> max_write = le32_to_cpu ( rsp -> MaxWriteSize ) ; server -> sec_mode = le16_to_cpu ( rsp -> SecurityMode ) ; if ( ( server -> sec_mode & SMB2_SEC_MODE_FLAGS_ALL ) != server -> sec_mode ) cifs_dbg ( FYI , \"Server<S2SV_blank>returned<S2SV_blank>unexpected<S2SV_blank>security<S2SV_blank>mode<S2SV_blank>0x%x\\\\n\" , server -> sec_mode ) ; server -> capabilities = le32_to_cpu ( rsp -> Capabilities ) ; server -> capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES ; security_blob = smb2_get_data_area_len ( & blob_offset , & blob_length , ( struct smb2_sync_hdr * ) rsp ) ; if ( blob_length == 0 ) { cifs_dbg ( FYI , \"missing<S2SV_blank>security<S2SV_blank>blob<S2SV_blank>on<S2SV_blank>negprot\\\\n\" ) ; server -> sec_ntlmssp = true ; } rc = cifs_enable_signing ( server , ses -> sign ) ; if ( rc ) goto neg_exit ; if ( blob_length ) { rc = decode_negTokenInit ( security_blob , blob_length , server ) ; if ( rc == 1 ) rc = 0 ; else if ( rc == 0 ) rc = - EIO ; } if ( rsp -> DialectRevision == cpu_to_le16 ( SMB311_PROT_ID ) ) { if ( rsp -> NegotiateContextCount ) rc = smb311_decode_neg_context ( rsp , server , rsp_iov . iov_len ) ; else cifs_dbg ( VFS , \"Missing<S2SV_blank>expected<S2SV_blank>negotiate<S2SV_blank>contexts\\\\n\" ) ; } neg_exit : free_rsp_buf ( resp_buftype , rsp ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & smb21_operations ; ses -> server -> vals = & smb21_values ; <S2SV_ModStart> SMB311_PROT_ID ) ) { <S2SV_ModStart> & smb311_operations ; ses -> server -> vals = & smb311_values ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_update_entropy ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> const int update = va_arg ( args , int ) ; vp9_update_entropy ( ctx -> cpi , update ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-358(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10229\n\n```\nCWE-358 int udpv6_recvmsg ( struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; <S2SV_StartBug> int is_udplite = IS_UDPLITE ( sk ) ; <S2SV_EndBug> int is_udp4 ; bool slow ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len , addr_len ) ; if ( np -> rxpmtu && np -> rxopt . bits . rxpmtu ) return ipv6_recv_rxpmtu ( sk , msg , len , addr_len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; is_udp4 = ( skb -> protocol == htons ( ETH_P_IP ) ) ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { <S2SV_StartBug> if ( udp_lib_checksum_complete ( skb ) ) <S2SV_EndBug> goto csum_copy_err ; } <S2SV_StartBug> if ( skb_csum_unnecessary ( skb ) ) <S2SV_EndBug> err = skb_copy_datagram_msg ( skb , sizeof ( struct udphdr ) , msg , copied ) ; else { err = skb_copy_and_csum_datagram_msg ( skb , sizeof ( struct udphdr ) , msg ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udpv6_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) { if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; } sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( msg -> msg_name ) { DECLARE_SOCKADDR ( struct sockaddr_in6 * , sin6 , msg -> msg_name ) ; sin6 -> sin6_family = AF_INET6 ; sin6 -> sin6_port = udp_hdr ( skb ) -> source ; sin6 -> sin6_flowinfo = 0 ; if ( is_udp4 ) { ipv6_addr_set_v4mapped ( ip_hdr ( skb ) -> saddr , & sin6 -> sin6_addr ) ; sin6 -> sin6_scope_id = 0 ; } else { sin6 -> sin6_addr = ipv6_hdr ( skb ) -> saddr ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , inet6_iif ( skb ) ) ; } * addr_len = sizeof ( * sin6 ) ; } if ( np -> rxopt . all ) ip6_datagram_recv_common_ctl ( sk , msg , skb ) ; if ( is_udp4 ) { if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; } else { if ( np -> rxopt . all ) ip6_datagram_recv_specific_ctl ( sk , msg , skb ) ; } err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { if ( is_udp4 ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } else { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } } unlock_sock_fast ( sk , slow ) ; cond_resched ( ) ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; bool checksum_valid = false <S2SV_ModStart> partial_cov ) { checksum_valid = ! <S2SV_ModEnd> udp_lib_checksum_complete ( skb <S2SV_ModStart> ( skb ) ; if ( ! checksum_valid <S2SV_ModStart> } if ( checksum_valid ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-36254\n\n```\nCWE-000 void sink ( int argc , char * * argv ) { static BUF buffer ; struct stat stb ; enum { YES , NO , DISPLAYED } wrerr ; BUF * bp ; off_t i ; size_t j , count ; int amt , exists , first , mask , mode , ofd , omode ; off_t size , statbytes ; int setimes , targisdir , wrerrno = 0 ; char ch , * cp , * np , * targ , * why , * vect [ 1 ] , buf [ 2048 ] ; struct timeval tv [ 2 ] ; # define atime tv [ 0 ] # define mtime tv [ 1 ] # define SCREWUP ( str ) do { why = str ; goto screwup ; } while ( 0 ) setimes = targisdir = 0 ; mask = umask ( 0 ) ; if ( ! pflag ) ( void ) umask ( mask ) ; if ( argc != 1 ) { run_err ( \"ambiguous<S2SV_blank>target\" ) ; exit ( 1 ) ; } targ = * argv ; if ( targetshouldbedirectory ) verifydir ( targ ) ; ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; if ( stat ( targ , & stb ) == 0 && S_ISDIR ( stb . st_mode ) ) targisdir = 1 ; for ( first = 1 ; ; first = 0 ) { cp = buf ; if ( atomicio ( read , remin , cp , 1 ) != 1 ) return ; if ( * cp ++ == '\\\\n' ) SCREWUP ( \"unexpected<S2SV_blank><newline>\" ) ; do { if ( atomicio ( read , remin , & ch , sizeof ( ch ) ) != sizeof ( ch ) ) SCREWUP ( \"lost<S2SV_blank>connection\" ) ; * cp ++ = ch ; } while ( cp < & buf [ sizeof ( buf ) - 1 ] && ch != '\\\\n' ) ; * cp = 0 ; if ( verbose_mode ) fprintf ( stderr , \"Sink:<S2SV_blank>%s\" , buf ) ; if ( buf [ 0 ] == '\\\\01' || buf [ 0 ] == '\\\\02' ) { if ( iamremote == 0 ) ( void ) atomicio ( vwrite , STDERR_FILENO , buf + 1 , strlen ( buf + 1 ) ) ; if ( buf [ 0 ] == '\\\\02' ) exit ( 1 ) ; ++ errs ; continue ; } if ( buf [ 0 ] == 'E' ) { ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; return ; } if ( ch == '\\\\n' ) * -- cp = 0 ; cp = buf ; if ( * cp == 'T' ) { setimes ++ ; cp ++ ; mtime . tv_sec = strtol ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"mtime.sec<S2SV_blank>not<S2SV_blank>delimited\" ) ; mtime . tv_usec = strtol ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"mtime.usec<S2SV_blank>not<S2SV_blank>delimited\" ) ; atime . tv_sec = strtol ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"atime.sec<S2SV_blank>not<S2SV_blank>delimited\" ) ; atime . tv_usec = strtol ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '\\\\0' ) SCREWUP ( \"atime.usec<S2SV_blank>not<S2SV_blank>delimited\" ) ; ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; continue ; } if ( * cp != 'C' && * cp != 'D' ) { if ( first ) { run_err ( \"%s\" , cp ) ; exit ( 1 ) ; } SCREWUP ( \"expected<S2SV_blank>control<S2SV_blank>record\" ) ; } mode = 0 ; for ( ++ cp ; cp < buf + 5 ; cp ++ ) { if ( * cp < '0' || * cp > '7' ) SCREWUP ( \"bad<S2SV_blank>mode\" ) ; mode = ( mode << 3 ) | ( * cp - '0' ) ; } if ( * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"mode<S2SV_blank>not<S2SV_blank>delimited\" ) ; for ( size = 0 ; isdigit ( * cp ) ; ) size = size * 10 + ( * cp ++ - '0' ) ; if ( * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"size<S2SV_blank>not<S2SV_blank>delimited\" ) ; <S2SV_StartBug> if ( ( strchr ( cp , '/' ) != NULL ) || ( strcmp ( cp , \"..\" ) == 0 ) ) { <S2SV_EndBug> run_err ( \"error:<S2SV_blank>unexpected<S2SV_blank>filename:<S2SV_blank>%s\" , cp ) ; exit ( 1 ) ; } if ( targisdir ) { static char * namebuf = NULL ; static size_t cursize = 0 ; size_t need ; need = strlen ( targ ) + strlen ( cp ) + 250 ; if ( need > cursize ) { if ( namebuf ) xfree ( namebuf ) ; namebuf = xmalloc ( need ) ; cursize = need ; } ( void ) snprintf ( namebuf , need , \"%s%s%s\" , targ , strcmp ( targ , \"/\" ) ? \"/\" : \"\" , cp ) ; np = namebuf ; } else np = targ ; curfile = cp ; exists = stat ( np , & stb ) == 0 ; if ( buf [ 0 ] == 'D' ) { int mod_flag = pflag ; if ( ! iamrecursive ) SCREWUP ( \"received<S2SV_blank>directory<S2SV_blank>without<S2SV_blank>-r\" ) ; if ( exists ) { if ( ! S_ISDIR ( stb . st_mode ) ) { errno = ENOTDIR ; goto bad ; } if ( pflag ) ( void ) chmod ( np , mode ) ; } else { mod_flag = 1 ; if ( mkdir ( np , mode | S_IRWXU ) < 0 ) goto bad ; } vect [ 0 ] = xstrdup ( np ) ; sink ( 1 , vect ) ; if ( setimes ) { setimes = 0 ; if ( utimes ( vect [ 0 ] , tv ) < 0 ) run_err ( \"%s:<S2SV_blank>set<S2SV_blank>times:<S2SV_blank>%s\" , vect [ 0 ] , strerror ( errno ) ) ; } if ( mod_flag ) ( void ) chmod ( vect [ 0 ] , mode ) ; if ( vect [ 0 ] ) xfree ( vect [ 0 ] ) ; continue ; } omode = mode ; mode |= S_IWUSR ; if ( ( ofd = open ( np , O_WRONLY | O_CREAT , mode ) ) < 0 ) { bad : run_err ( \"%s:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; continue ; } ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; if ( ( bp = allocbuf ( & buffer , ofd , 4096 ) ) == NULL ) { ( void ) close ( ofd ) ; continue ; } cp = bp -> buf ; wrerr = NO ; statbytes = 0 ; # ifdef PROGRESS_METER if ( showprogress ) start_progress_meter ( curfile , size , & statbytes ) ; # endif for ( count = i = 0 ; i < size ; i += 4096 ) { amt = 4096 ; if ( i + amt > size ) amt = size - i ; count += amt ; do { j = atomicio ( read , remin , cp , amt ) ; if ( j == 0 ) { run_err ( \"%s\" , j ? strerror ( errno ) : \"dropped<S2SV_blank>connection\" ) ; exit ( 1 ) ; } amt -= j ; cp += j ; statbytes += j ; } while ( amt > 0 ) ; if ( limit_rate ) bwlimit ( 4096 ) ; if ( count == bp -> cnt ) { if ( wrerr == NO ) { if ( atomicio ( vwrite , ofd , bp -> buf , count ) != count ) { wrerr = YES ; wrerrno = errno ; } } count = 0 ; cp = bp -> buf ; } } # ifdef PROGRESS_METER if ( showprogress ) stop_progress_meter ( ) ; # endif if ( count != 0 && wrerr == NO && atomicio ( vwrite , ofd , bp -> buf , count ) != count ) { wrerr = YES ; wrerrno = errno ; } if ( wrerr == NO && ftruncate ( ofd , size ) != 0 ) { run_err ( \"%s:<S2SV_blank>truncate:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = DISPLAYED ; } if ( pflag ) { if ( exists || omode != mode ) # ifdef HAVE_FCHMOD if ( fchmod ( ofd , omode ) ) { # else if ( chmod ( np , omode ) ) { # endif run_err ( \"%s:<S2SV_blank>set<S2SV_blank>mode:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = DISPLAYED ; } } else { if ( ! exists && omode != mode ) # ifdef HAVE_FCHMOD if ( fchmod ( ofd , omode & ~ mask ) ) { # else if ( chmod ( np , omode & ~ mask ) ) { # endif run_err ( \"%s:<S2SV_blank>set<S2SV_blank>mode:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = DISPLAYED ; } } if ( close ( ofd ) == - 1 ) { wrerr = YES ; wrerrno = errno ; } ( void ) response ( ) ; if ( setimes && wrerr == NO ) { setimes = 0 ; if ( utimes ( np , tv ) < 0 ) { run_err ( \"%s:<S2SV_blank>set<S2SV_blank>times:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = DISPLAYED ; } } switch ( wrerr ) { case YES : run_err ( \"%s:<S2SV_blank>%s\" , np , strerror ( wrerrno ) ) ; break ; case NO : ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; break ; case DISPLAYED : break ; } } screwup : run_err ( \"protocol<S2SV_blank>error:<S2SV_blank>%s\" , why ) ; exit ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( * cp == '\\\\0' || <S2SV_ModEnd> strchr ( cp <S2SV_ModStart> ) != NULL || <S2SV_ModEnd> strcmp ( cp <S2SV_ModStart> ( cp , \".\" ) == 0 || strcmp ( cp , <S2SV_ModStart> ) == 0 <S2SV_ModEnd> ) { run_err\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_write_complete ( void * opaque , int ret ) { SCSIDiskReq * r = ( SCSIDiskReq * ) opaque ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; <S2SV_StartBug> uint32_t len ; <S2SV_EndBug> uint32_t n ; if ( r -> req . aiocb != NULL ) { r -> req . aiocb = NULL ; bdrv_acct_done ( s -> bs , & r -> acct ) ; } if ( ret ) { if ( scsi_handle_rw_error ( r , - ret , SCSI_REQ_STATUS_RETRY_WRITE ) ) { return ; } } <S2SV_StartBug> n = r -> iov . iov_len / 512 ; <S2SV_EndBug> r -> sector += n ; r -> sector_count -= n ; if ( r -> sector_count == 0 ) { scsi_req_complete ( & r -> req , GOOD ) ; } else { <S2SV_StartBug> len = r -> sector_count * 512 ; <S2SV_EndBug> if ( len > SCSI_DMA_BUF_SIZE ) { len = SCSI_DMA_BUF_SIZE ; } r -> iov . iov_len = len ; <S2SV_StartBug> DPRINTF ( \"Write<S2SV_blank>complete<S2SV_blank>tag=0x%x<S2SV_blank>more=%d\\\\n\" , r -> req . tag , len ) ; <S2SV_EndBug> <S2SV_StartBug> scsi_req_data ( & r -> req , len ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; uint32_t <S2SV_ModEnd> n ; if <S2SV_ModStart> = r -> qiov . size <S2SV_ModEnd> / 512 ; <S2SV_ModStart> } else { scsi_init_iovec ( r ) <S2SV_ModEnd> ; DPRINTF ( <S2SV_ModStart> . tag , r -> qiov . size <S2SV_ModEnd> ) ; scsi_req_data <S2SV_ModStart> -> req , r -> qiov . size <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 <S2SV_StartBug> void Huff_offsetTransmit ( huff_t * huff , int ch , byte * fout , int * offset ) { <S2SV_EndBug> bloc = * offset ; <S2SV_StartBug> send ( huff -> loc [ ch ] , NULL , fout ) ; <S2SV_EndBug> * offset = bloc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int * offset , int maxoffset <S2SV_ModStart> NULL , fout , maxoffset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3400\n\n```\nCWE-119 static int udf_load_logicalvol ( struct super_block * sb , sector_t block , struct kernel_lb_addr * fileset ) { struct logicalVolDesc * lvd ; <S2SV_StartBug> int i , j , offset ; <S2SV_EndBug> uint8_t type ; struct udf_sb_info * sbi = UDF_SB ( sb ) ; struct genericPartitionMap * gpm ; uint16_t ident ; struct buffer_head * bh ; unsigned int table_len ; int ret = 0 ; bh = udf_read_tagged ( sb , block , block , & ident ) ; if ( ! bh ) return 1 ; BUG_ON ( ident != TAG_IDENT_LVD ) ; lvd = ( struct logicalVolDesc * ) bh -> b_data ; table_len = le32_to_cpu ( lvd -> mapTableLength ) ; if ( sizeof ( * lvd ) + table_len > sb -> s_blocksize ) { udf_err ( sb , \"error<S2SV_blank>loading<S2SV_blank>logical<S2SV_blank>volume<S2SV_blank>descriptor:<S2SV_blank>\" \"Partition<S2SV_blank>table<S2SV_blank>too<S2SV_blank>long<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%lu)\\\\n\" , table_len , sb -> s_blocksize - sizeof ( * lvd ) ) ; goto out_bh ; } ret = udf_sb_alloc_partition_maps ( sb , le32_to_cpu ( lvd -> numPartitionMaps ) ) ; if ( ret ) goto out_bh ; for ( i = 0 , offset = 0 ; i < sbi -> s_partitions && offset < table_len ; i ++ , offset += gpm -> partitionMapLength ) { struct udf_part_map * map = & sbi -> s_partmaps [ i ] ; gpm = ( struct genericPartitionMap * ) & ( lvd -> partitionMaps [ offset ] ) ; type = gpm -> partitionMapType ; if ( type == 1 ) { struct genericPartitionMap1 * gpm1 = ( struct genericPartitionMap1 * ) gpm ; map -> s_partition_type = UDF_TYPE1_MAP15 ; map -> s_volumeseqnum = le16_to_cpu ( gpm1 -> volSeqNum ) ; map -> s_partition_num = le16_to_cpu ( gpm1 -> partitionNum ) ; map -> s_partition_func = NULL ; } else if ( type == 2 ) { struct udfPartitionMap2 * upm2 = ( struct udfPartitionMap2 * ) gpm ; if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_VIRTUAL , strlen ( UDF_ID_VIRTUAL ) ) ) { u16 suf = le16_to_cpu ( ( ( __le16 * ) upm2 -> partIdent . identSuffix ) [ 0 ] ) ; if ( suf < 0x0200 ) { map -> s_partition_type = UDF_VIRTUAL_MAP15 ; map -> s_partition_func = udf_get_pblock_virt15 ; } else { map -> s_partition_type = UDF_VIRTUAL_MAP20 ; map -> s_partition_func = udf_get_pblock_virt20 ; } } else if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_SPARABLE , strlen ( UDF_ID_SPARABLE ) ) ) { <S2SV_StartBug> uint32_t loc ; <S2SV_EndBug> struct sparingTable * st ; <S2SV_StartBug> struct sparablePartitionMap * spm = <S2SV_EndBug> ( struct sparablePartitionMap * ) gpm ; map -> s_partition_type = UDF_SPARABLE_MAP15 ; map -> s_type_specific . s_sparing . s_packet_len = le16_to_cpu ( spm -> packetLength ) ; for ( j = 0 ; j < spm -> numSparingTables ; j ++ ) { struct buffer_head * bh2 ; loc = le32_to_cpu ( spm -> locSparingTable [ j ] ) ; bh2 = udf_read_tagged ( sb , loc , loc , & ident ) ; map -> s_type_specific . s_sparing . s_spar_map [ j ] = bh2 ; if ( bh2 == NULL ) continue ; st = ( struct sparingTable * ) bh2 -> b_data ; if ( ident != 0 || strncmp ( st -> sparingIdent . ident , UDF_ID_SPARING , strlen ( UDF_ID_SPARING ) ) ) { brelse ( bh2 ) ; map -> s_type_specific . s_sparing . s_spar_map [ j ] = NULL ; } } map -> s_partition_func = udf_get_pblock_spar15 ; } else if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_METADATA , strlen ( UDF_ID_METADATA ) ) ) { struct udf_meta_data * mdata = & map -> s_type_specific . s_metadata ; struct metadataPartitionMap * mdm = ( struct metadataPartitionMap * ) & ( lvd -> partitionMaps [ offset ] ) ; udf_debug ( \"Parsing<S2SV_blank>Logical<S2SV_blank>vol<S2SV_blank>part<S2SV_blank>%d<S2SV_blank>type<S2SV_blank>%d<S2SV_blank><S2SV_blank>id=%s\\\\n\" , i , type , UDF_ID_METADATA ) ; map -> s_partition_type = UDF_METADATA_MAP25 ; map -> s_partition_func = udf_get_pblock_meta25 ; mdata -> s_meta_file_loc = le32_to_cpu ( mdm -> metadataFileLoc ) ; mdata -> s_mirror_file_loc = le32_to_cpu ( mdm -> metadataMirrorFileLoc ) ; mdata -> s_bitmap_file_loc = le32_to_cpu ( mdm -> metadataBitmapFileLoc ) ; mdata -> s_alloc_unit_size = le32_to_cpu ( mdm -> allocUnitSize ) ; mdata -> s_align_unit_size = le16_to_cpu ( mdm -> alignUnitSize ) ; if ( mdm -> flags & 0x01 ) mdata -> s_flags |= MF_DUPLICATE_MD ; udf_debug ( \"Metadata<S2SV_blank>Ident<S2SV_blank>suffix=0x%x\\\\n\" , le16_to_cpu ( * ( __le16 * ) mdm -> partIdent . identSuffix ) ) ; udf_debug ( \"Metadata<S2SV_blank>part<S2SV_blank>num=%d\\\\n\" , le16_to_cpu ( mdm -> partitionNum ) ) ; udf_debug ( \"Metadata<S2SV_blank>part<S2SV_blank>alloc<S2SV_blank>unit<S2SV_blank>size=%d\\\\n\" , le32_to_cpu ( mdm -> allocUnitSize ) ) ; udf_debug ( \"Metadata<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataFileLoc ) ) ; udf_debug ( \"Mirror<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataMirrorFileLoc ) ) ; udf_debug ( \"Bitmap<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataBitmapFileLoc ) ) ; udf_debug ( \"Flags:<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , mdata -> s_flags , mdm -> flags ) ; } else { udf_debug ( \"Unknown<S2SV_blank>ident:<S2SV_blank>%s\\\\n\" , upm2 -> partIdent . ident ) ; continue ; } map -> s_volumeseqnum = le16_to_cpu ( upm2 -> volSeqNum ) ; map -> s_partition_num = le16_to_cpu ( upm2 -> partitionNum ) ; } udf_debug ( \"Partition<S2SV_blank>(%d:%d)<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>on<S2SV_blank>volume<S2SV_blank>%d\\\\n\" , i , map -> s_partition_num , type , map -> s_volumeseqnum ) ; } if ( fileset ) { struct long_ad * la = ( struct long_ad * ) & ( lvd -> logicalVolContentsUse [ 0 ] ) ; * fileset = lelb_to_cpu ( la -> extLocation ) ; udf_debug ( \"FileSet<S2SV_blank>found<S2SV_blank>in<S2SV_blank>LogicalVolDesc<S2SV_blank>at<S2SV_blank>block=%d,<S2SV_blank>partition=%d\\\\n\" , fileset -> logicalBlockNum , fileset -> partitionReferenceNum ) ; } if ( lvd -> integritySeqExt . extLength ) udf_load_logicalvolint ( sb , leea_to_cpu ( lvd -> integritySeqExt ) ) ; out_bh : brelse ( bh ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int i <S2SV_ModEnd> , offset ; <S2SV_ModStart> ) ) { if ( udf_load_sparable_map ( sb , map , ( <S2SV_ModEnd> struct sparablePartitionMap * <S2SV_ModStart> struct sparablePartitionMap * ) gpm ) < 0 ) goto out_bh <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static char * get_object ( FILE * fp , int obj_id , const xref_t * xref , size_t * size , int * is_stream ) { static const int blk_sz = 256 ; int i , total_sz , read_sz , n_blks , search , stream ; size_t obj_sz ; char * c , * data ; long start ; const xref_entry_t * entry ; if ( size ) * size = 0 ; if ( is_stream ) * is_stream = 0 ; start = ftell ( fp ) ; entry = NULL ; for ( i = 0 ; i < xref -> n_entries ; i ++ ) if ( xref -> entries [ i ] . obj_id == obj_id ) { entry = & xref -> entries [ i ] ; break ; } if ( ! entry ) return NULL ; fseek ( fp , entry -> offset , SEEK_SET ) ; obj_sz = 0 ; total_sz = 0 ; n_blks = 1 ; <S2SV_StartBug> data = malloc ( blk_sz * n_blks ) ; <S2SV_EndBug> memset ( data , 0 , blk_sz * n_blks ) ; stream = 0 ; while ( ( read_sz = fread ( data + total_sz , 1 , blk_sz - 1 , fp ) ) && ! ferror ( fp ) ) { total_sz += read_sz ; * ( data + total_sz ) = '\\\\0' ; if ( total_sz + blk_sz >= ( blk_sz * n_blks ) ) data = realloc ( data , blk_sz * ( ++ n_blks ) ) ; search = total_sz - read_sz ; if ( search < 0 ) search = 0 ; if ( ( c = strstr ( data + search , \"endobj\" ) ) ) { * ( c + strlen ( \"endobj\" ) + 1 ) = '\\\\0' ; obj_sz = ( void * ) strstr ( data + search , \"endobj\" ) - ( void * ) data ; obj_sz += strlen ( \"endobj\" ) + 1 ; break ; } else if ( strstr ( data , \"stream\" ) ) stream = 1 ; } clearerr ( fp ) ; fseek ( fp , start , SEEK_SET ) ; if ( size ) * size = obj_sz ; if ( is_stream ) * is_stream = stream ; return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; data = safe_calloc ( <S2SV_ModEnd> blk_sz * n_blks\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2069\n\n```\nCWE-362 void flush_tlb_page ( struct vm_area_struct * vma , unsigned long start ) { struct mm_struct * mm = vma -> vm_mm ; preempt_disable ( ) ; if ( current -> active_mm == mm ) { <S2SV_StartBug> if ( current -> mm ) <S2SV_EndBug> __flush_tlb_one ( start ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> leave_mm ( smp_processor_id ( ) ) ; <S2SV_EndBug> } if ( cpumask_any_but ( mm_cpumask ( mm ) , smp_processor_id ( ) ) < nr_cpu_ids ) flush_tlb_others ( mm_cpumask ( mm ) , mm , start , 0UL ) ; preempt_enable ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mm ) { <S2SV_ModStart> start ) ; } else { <S2SV_ModEnd> leave_mm ( smp_processor_id <S2SV_ModStart> ) ) ; smp_mb ( ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void y4m_convert_null ( y4m_input * _y4m , unsigned char * _dst , unsigned char * _aux ) { <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> _aux ) { ( void ) _y4m ; ( void ) _dst ; ( void ) _aux ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11089\n\n```\nCWE-125 static UINT drive_process_irp_write ( DRIVE_DEVICE * drive , IRP * irp ) { DRIVE_FILE * file ; UINT32 Length ; UINT64 Offset ; <S2SV_StartBug> if ( ! drive || ! irp || ! irp -> input || ! irp -> output || ! irp -> Complete ) <S2SV_EndBug> return ERROR_INVALID_PARAMETER ; if ( Stream_GetRemainingLength ( irp -> input ) < 32 ) return ERROR_INVALID_DATA ; Stream_Read_UINT32 ( irp -> input , Length ) ; Stream_Read_UINT64 ( irp -> input , Offset ) ; Stream_Seek ( irp -> input , 20 ) ; <S2SV_StartBug> file = drive_get_file_by_id ( drive , irp -> FileId ) ; <S2SV_EndBug> if ( ! file ) { irp -> IoStatus = STATUS_UNSUCCESSFUL ; Length = 0 ; } else if ( ! drive_file_seek ( file , Offset ) ) { irp -> IoStatus = drive_map_windows_err ( GetLastError ( ) ) ; Length = 0 ; } <S2SV_StartBug> else if ( ! drive_file_write ( file , Stream_Pointer ( irp -> input ) , Length ) ) <S2SV_EndBug> { irp -> IoStatus = drive_map_windows_err ( GetLastError ( ) ) ; Length = 0 ; } Stream_Write_UINT32 ( irp -> output , Length ) ; Stream_Write_UINT8 ( irp -> output , 0 ) ; return irp -> Complete ( irp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> UINT64 Offset ; void * ptr ; <S2SV_ModStart> 20 ) ; ptr = Stream_Pointer ( irp -> input ) ; if ( ! Stream_SafeSeek ( irp -> input , Length ) ) return ERROR_INVALID_DATA ; <S2SV_ModStart> ( file , ptr <S2SV_ModEnd> , Length )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9933\n\n```\nCWE-119 void gdImageFillToBorder ( gdImagePtr im , int x , int y , int border , int color ) { int lastBorder ; int leftLimit = - 1 , rightLimit ; int i , restoreAlphaBlending = 0 ; <S2SV_StartBug> if ( border < 0 ) { <S2SV_EndBug> return ; } if ( ! im -> trueColor ) { if ( ( color > ( im -> colorsTotal - 1 ) ) || ( border > ( im -> colorsTotal - 1 ) ) || ( color < 0 ) ) { return ; } } restoreAlphaBlending = im -> alphaBlendingFlag ; im -> alphaBlendingFlag = 0 ; if ( x >= im -> sx ) { x = im -> sx - 1 ; } else if ( x < 0 ) { x = 0 ; } if ( y >= im -> sy ) { y = im -> sy - 1 ; } else if ( y < 0 ) { y = 0 ; } for ( i = x ; i >= 0 ; i -- ) { if ( gdImageGetPixel ( im , i , y ) == border ) { break ; } gdImageSetPixel ( im , i , y , color ) ; leftLimit = i ; } if ( leftLimit == - 1 ) { im -> alphaBlendingFlag = restoreAlphaBlending ; return ; } rightLimit = x ; for ( i = ( x + 1 ) ; i < im -> sx ; i ++ ) { if ( gdImageGetPixel ( im , i , y ) == border ) { break ; } gdImageSetPixel ( im , i , y , color ) ; rightLimit = i ; } if ( y > 0 ) { lastBorder = 1 ; for ( i = leftLimit ; i <= rightLimit ; i ++ ) { int c = gdImageGetPixel ( im , i , y - 1 ) ; if ( lastBorder ) { if ( ( c != border ) && ( c != color ) ) { gdImageFillToBorder ( im , i , y - 1 , border , color ) ; lastBorder = 0 ; } } else if ( ( c == border ) || ( c == color ) ) { lastBorder = 1 ; } } } if ( y < ( ( im -> sy ) - 1 ) ) { lastBorder = 1 ; for ( i = leftLimit ; i <= rightLimit ; i ++ ) { int c = gdImageGetPixel ( im , i , y + 1 ) ; if ( lastBorder ) { if ( ( c != border ) && ( c != color ) ) { gdImageFillToBorder ( im , i , y + 1 , border , color ) ; lastBorder = 0 ; } } else if ( ( c == border ) || ( c == color ) ) { lastBorder = 1 ; } } } im -> alphaBlendingFlag = restoreAlphaBlending ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> border < 0 || color < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2347\n\n```\nCWE-190 static uint8_t * extend_raw_data ( LHAFileHeader * * header , LHAInputStream * stream , size_t nbytes ) { LHAFileHeader * new_header ; size_t new_raw_len ; <S2SV_StartBug> uint8_t * result ; <S2SV_EndBug> new_raw_len = RAW_DATA_LEN ( header ) + nbytes ; new_header = realloc ( * header , sizeof ( LHAFileHeader ) + new_raw_len ) ; if ( new_header == NULL ) { return NULL ; } * header = new_header ; new_header -> raw_data = ( uint8_t * ) ( new_header + 1 ) ; result = new_header -> raw_data + new_header -> raw_data_len ; if ( ! lha_input_stream_read ( stream , result , nbytes ) ) { return NULL ; } new_header -> raw_data_len = new_raw_len ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * result ; if ( nbytes > LEVEL_3_MAX_HEADER_LEN ) { return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4127\n\n```\nCWE-264 static int linear_ioctl ( struct dm_target * ti , unsigned int cmd , unsigned long arg ) { struct linear_c * lc = ( struct linear_c * ) ti -> private ; <S2SV_StartBug> return __blkdev_driver_ioctl ( lc -> dev -> bdev , lc -> dev -> mode , cmd , arg ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private ; struct dm_dev * dev = lc -> dev ; int r = 0 ; if <S2SV_ModEnd> ( lc -> <S2SV_ModStart> ( lc -> start || ti -> len != i_size_read ( dev -> bdev -> bd_inode ) >> SECTOR_SHIFT ) r = scsi_verify_blk_ioctl ( NULL , cmd ) ; return r ? : __blkdev_driver_ioctl ( <S2SV_ModStart> -> bdev , <S2SV_ModEnd> dev -> mode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 void ext2_xattr_delete_inode ( struct inode * inode ) { struct buffer_head * bh = NULL ; <S2SV_StartBug> struct mb_cache_entry * ce ; <S2SV_EndBug> down_write ( & EXT2_I ( inode ) -> xattr_sem ) ; if ( ! EXT2_I ( inode ) -> i_file_acl ) goto cleanup ; bh = sb_bread ( inode -> i_sb , EXT2_I ( inode ) -> i_file_acl ) ; if ( ! bh ) { ext2_error ( inode -> i_sb , \"ext2_xattr_delete_inode\" , \"inode<S2SV_blank>%ld:<S2SV_blank>block<S2SV_blank>%d<S2SV_blank>read<S2SV_blank>error\" , inode -> i_ino , EXT2_I ( inode ) -> i_file_acl ) ; goto cleanup ; } ea_bdebug ( bh , \"b_count=%d\" , atomic_read ( & ( bh -> b_count ) ) ) ; if ( HDR ( bh ) -> h_magic != cpu_to_le32 ( EXT2_XATTR_MAGIC ) || HDR ( bh ) -> h_blocks != cpu_to_le32 ( 1 ) ) { ext2_error ( inode -> i_sb , \"ext2_xattr_delete_inode\" , \"inode<S2SV_blank>%ld:<S2SV_blank>bad<S2SV_blank>block<S2SV_blank>%d\" , inode -> i_ino , EXT2_I ( inode ) -> i_file_acl ) ; goto cleanup ; } <S2SV_StartBug> ce = mb_cache_entry_get ( ext2_xattr_cache , bh -> b_bdev , bh -> b_blocknr ) ; <S2SV_EndBug> lock_buffer ( bh ) ; if ( HDR ( bh ) -> h_refcount == cpu_to_le32 ( 1 ) ) { <S2SV_StartBug> if ( ce ) <S2SV_EndBug> mb_cache_entry_free ( ce ) ; ext2_free_blocks ( inode , EXT2_I ( inode ) -> i_file_acl , 1 ) ; get_bh ( bh ) ; bforget ( bh ) ; unlock_buffer ( bh ) ; } else { <S2SV_StartBug> le32_add_cpu ( & HDR ( bh ) -> h_refcount , - 1 ) ; <S2SV_EndBug> if ( ce ) mb_cache_entry_release ( ce ) ; ea_bdebug ( bh , \"refcount<S2SV_blank>now=%d\" , le32_to_cpu ( HDR ( bh ) -> h_refcount ) ) ; unlock_buffer ( bh ) ; mark_buffer_dirty ( bh ) ; if ( IS_SYNC ( inode ) ) sync_dirty_buffer ( bh ) ; dquot_free_block_nodirty ( inode , 1 ) ; } EXT2_I ( inode ) -> i_file_acl = 0 ; cleanup : brelse ( bh ) ; up_write ( & EXT2_I ( inode ) -> xattr_sem ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; <S2SV_ModEnd> down_write ( & <S2SV_ModStart> cleanup ; } <S2SV_ModEnd> lock_buffer ( bh <S2SV_ModStart> ) ) { __u32 hash = le32_to_cpu ( HDR ( bh ) -> h_hash ) ; mb2_cache_entry_delete_block ( EXT2_SB ( inode -> i_sb ) -> s_mb_cache , hash , bh -> b_blocknr <S2SV_ModEnd> ) ; ext2_free_blocks <S2SV_ModStart> , - 1 <S2SV_ModEnd> ) ; ea_bdebug\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static INLINE int get_tx_eob ( const struct segmentation * seg , int segment_id , TX_SIZE tx_size ) { const int eob_max = 16 << ( tx_size << 1 ) ; <S2SV_StartBug> return vp9_segfeature_active ( seg , segment_id , SEG_LVL_SKIP ) ? 0 : eob_max ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return segfeature_active <S2SV_ModEnd> ( seg ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9419\n\n```\nCWE-200 __visible __notrace_funcgraph struct task_struct * __switch_to ( struct task_struct * prev_p , struct task_struct * next_p ) { struct thread_struct * prev = & prev_p -> thread ; struct thread_struct * next = & next_p -> thread ; int cpu = smp_processor_id ( ) ; struct tss_struct * tss = & per_cpu ( init_tss , cpu ) ; unsigned fsindex , gsindex ; fpu_switch_t fpu ; fpu = switch_fpu_prepare ( prev_p , next_p , cpu ) ; load_sp0 ( tss , next ) ; <S2SV_StartBug> savesegment ( es , prev -> es ) ; <S2SV_EndBug> if ( unlikely ( next -> es | prev -> es ) ) loadsegment ( es , next -> es ) ; savesegment ( ds , prev -> ds ) ; if ( unlikely ( next -> ds | prev -> ds ) ) <S2SV_StartBug> loadsegment ( ds , next -> ds ) ; <S2SV_EndBug> savesegment ( fs , fsindex ) ; savesegment ( gs , gsindex ) ; load_TLS ( next , cpu ) ; arch_end_context_switch ( next_p ) ; if ( unlikely ( fsindex | next -> fsindex | prev -> fs ) ) { loadsegment ( fs , next -> fsindex ) ; if ( fsindex ) prev -> fs = 0 ; } if ( next -> fs ) wrmsrl ( MSR_FS_BASE , next -> fs ) ; prev -> fsindex = fsindex ; if ( unlikely ( gsindex | next -> gsindex | prev -> gs ) ) { load_gs_index ( next -> gsindex ) ; if ( gsindex ) prev -> gs = 0 ; } if ( next -> gs ) wrmsrl ( MSR_KERNEL_GS_BASE , next -> gs ) ; prev -> gsindex = gsindex ; switch_fpu_finish ( next_p , fpu ) ; prev -> usersp = this_cpu_read ( old_rsp ) ; this_cpu_write ( old_rsp , next -> usersp ) ; this_cpu_write ( current_task , next_p ) ; task_thread_info ( prev_p ) -> saved_preempt_count = this_cpu_read ( __preempt_count ) ; this_cpu_write ( __preempt_count , task_thread_info ( next_p ) -> saved_preempt_count ) ; this_cpu_write ( kernel_stack , ( unsigned long ) task_stack_page ( next_p ) + THREAD_SIZE - KERNEL_STACK_OFFSET ) ; if ( unlikely ( task_thread_info ( next_p ) -> flags & _TIF_WORK_CTXSW_NEXT || task_thread_info ( prev_p ) -> flags & _TIF_WORK_CTXSW_PREV ) ) __switch_to_xtra ( prev_p , next_p , tss ) ; return prev_p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; savesegment ( fs , fsindex ) ; savesegment ( gs , gsindex ) ; load_TLS ( next , cpu ) ; arch_end_context_switch ( next_p ) ; savesegment ( <S2SV_ModStart> next -> ds <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10088\n\n```\nCWE-416 static ssize_t sg_write ( struct file * filp , const char __user * buf , size_t count , loff_t * ppos ) { int mxsize , cmd_size , k ; int input_size , blocking ; unsigned char opcode ; Sg_device * sdp ; Sg_fd * sfp ; Sg_request * srp ; struct sg_header old_hdr ; sg_io_hdr_t * hp ; unsigned char cmnd [ SG_MAX_CDB_SIZE ] ; <S2SV_StartBug> if ( ( ! ( sfp = ( Sg_fd * ) filp -> private_data ) ) || ( ! ( sdp = sfp -> parentdp ) ) ) <S2SV_EndBug> return - ENXIO ; SCSI_LOG_TIMEOUT ( 3 , sg_printk ( KERN_INFO , sdp , \"sg_write:<S2SV_blank>count=%d\\\\n\" , ( int ) count ) ) ; if ( atomic_read ( & sdp -> detaching ) ) return - ENODEV ; if ( ! ( ( filp -> f_flags & O_NONBLOCK ) || scsi_block_when_processing_errors ( sdp -> device ) ) ) return - ENXIO ; if ( ! access_ok ( VERIFY_READ , buf , count ) ) return - EFAULT ; if ( count < SZ_SG_HEADER ) return - EIO ; if ( __copy_from_user ( & old_hdr , buf , SZ_SG_HEADER ) ) return - EFAULT ; blocking = ! ( filp -> f_flags & O_NONBLOCK ) ; if ( old_hdr . reply_len < 0 ) return sg_new_write ( sfp , filp , buf , count , blocking , 0 , 0 , NULL ) ; if ( count < ( SZ_SG_HEADER + 6 ) ) return - EIO ; if ( ! ( srp = sg_add_request ( sfp ) ) ) { SCSI_LOG_TIMEOUT ( 1 , sg_printk ( KERN_INFO , sdp , \"sg_write:<S2SV_blank>queue<S2SV_blank>full\\\\n\" ) ) ; return - EDOM ; } buf += SZ_SG_HEADER ; __get_user ( opcode , buf ) ; if ( sfp -> next_cmd_len > 0 ) { cmd_size = sfp -> next_cmd_len ; sfp -> next_cmd_len = 0 ; } else { cmd_size = COMMAND_SIZE ( opcode ) ; if ( ( opcode >= 0xc0 ) && old_hdr . twelve_byte ) cmd_size = 12 ; } SCSI_LOG_TIMEOUT ( 4 , sg_printk ( KERN_INFO , sdp , \"sg_write:<S2SV_blank><S2SV_blank><S2SV_blank>scsi<S2SV_blank>opcode=0x%02x,<S2SV_blank>cmd_size=%d\\\\n\" , ( int ) opcode , cmd_size ) ) ; input_size = count - cmd_size ; mxsize = ( input_size > old_hdr . reply_len ) ? input_size : old_hdr . reply_len ; mxsize -= SZ_SG_HEADER ; input_size -= SZ_SG_HEADER ; if ( input_size < 0 ) { sg_remove_request ( sfp , srp ) ; return - EIO ; } hp = & srp -> header ; hp -> interface_id = '\\\\0' ; hp -> cmd_len = ( unsigned char ) cmd_size ; hp -> iovec_count = 0 ; hp -> mx_sb_len = 0 ; if ( input_size > 0 ) hp -> dxfer_direction = ( old_hdr . reply_len > SZ_SG_HEADER ) ? SG_DXFER_TO_FROM_DEV : SG_DXFER_TO_DEV ; else hp -> dxfer_direction = ( mxsize > 0 ) ? SG_DXFER_FROM_DEV : SG_DXFER_NONE ; hp -> dxfer_len = mxsize ; if ( ( hp -> dxfer_direction == SG_DXFER_TO_DEV ) || ( hp -> dxfer_direction == SG_DXFER_TO_FROM_DEV ) ) hp -> dxferp = ( char __user * ) buf + cmd_size ; else hp -> dxferp = NULL ; hp -> sbp = NULL ; hp -> timeout = old_hdr . reply_len ; hp -> flags = input_size ; hp -> pack_id = old_hdr . pack_id ; hp -> usr_ptr = NULL ; if ( __copy_from_user ( cmnd , buf , cmd_size ) ) return - EFAULT ; if ( hp -> dxfer_direction == SG_DXFER_TO_FROM_DEV ) { static char cmd [ TASK_COMM_LEN ] ; if ( strcmp ( current -> comm , cmd ) ) { printk_ratelimited ( KERN_WARNING \"sg_write:<S2SV_blank>data<S2SV_blank>in/out<S2SV_blank>%d/%d<S2SV_blank>bytes<S2SV_blank>\" \"for<S2SV_blank>SCSI<S2SV_blank>command<S2SV_blank>0x%x--<S2SV_blank>guessing<S2SV_blank>\" \"data<S2SV_blank>in;\\\\n<S2SV_blank><S2SV_blank><S2SV_blank>program<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>setting<S2SV_blank>\" \"count<S2SV_blank>and/or<S2SV_blank>reply_len<S2SV_blank>properly\\\\n\" , old_hdr . reply_len - ( int ) SZ_SG_HEADER , input_size , ( unsigned int ) cmnd [ 0 ] , current -> comm ) ; strcpy ( cmd , current -> comm ) ; } } k = sg_common_write ( sfp , srp , cmnd , sfp -> timeout , blocking ) ; return ( k < 0 ) ? k : count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( unlikely ( segment_eq ( get_fs ( ) , KERNEL_DS ) ) ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-388(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5577\n\n```\nCWE-388 static int vc4_get_bcl ( struct drm_device * dev , struct vc4_exec_info * exec ) { struct drm_vc4_submit_cl * args = exec -> args ; void * temp = NULL ; void * bin ; int ret = 0 ; uint32_t bin_offset = 0 ; uint32_t shader_rec_offset = roundup ( bin_offset + args -> bin_cl_size , 16 ) ; uint32_t uniforms_offset = shader_rec_offset + args -> shader_rec_size ; uint32_t exec_size = uniforms_offset + args -> uniforms_size ; uint32_t temp_size = exec_size + ( sizeof ( struct vc4_shader_state ) * args -> shader_rec_count ) ; struct vc4_bo * bo ; if ( shader_rec_offset < args -> bin_cl_size || uniforms_offset < shader_rec_offset || exec_size < uniforms_offset || args -> shader_rec_count >= ( UINT_MAX / sizeof ( struct vc4_shader_state ) ) || temp_size < exec_size ) { DRM_ERROR ( \"overflow<S2SV_blank>in<S2SV_blank>exec<S2SV_blank>arguments\\\\n\" ) ; <S2SV_StartBug> goto fail ; <S2SV_EndBug> } temp = drm_malloc_ab ( temp_size , 1 ) ; if ( ! temp ) { DRM_ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>storage<S2SV_blank>for<S2SV_blank>copying<S2SV_blank>\" \"in<S2SV_blank>bin/render<S2SV_blank>CLs.\\\\n\" ) ; ret = - ENOMEM ; goto fail ; } bin = temp + bin_offset ; exec -> shader_rec_u = temp + shader_rec_offset ; exec -> uniforms_u = temp + uniforms_offset ; exec -> shader_state = temp + exec_size ; exec -> shader_state_size = args -> shader_rec_count ; if ( copy_from_user ( bin , ( void __user * ) ( uintptr_t ) args -> bin_cl , args -> bin_cl_size ) ) { ret = - EFAULT ; goto fail ; } if ( copy_from_user ( exec -> shader_rec_u , ( void __user * ) ( uintptr_t ) args -> shader_rec , args -> shader_rec_size ) ) { ret = - EFAULT ; goto fail ; } if ( copy_from_user ( exec -> uniforms_u , ( void __user * ) ( uintptr_t ) args -> uniforms , args -> uniforms_size ) ) { ret = - EFAULT ; goto fail ; } bo = vc4_bo_create ( dev , exec_size , true ) ; if ( IS_ERR ( bo ) ) { DRM_ERROR ( \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>BO<S2SV_blank>for<S2SV_blank>binning\\\\n\" ) ; ret = PTR_ERR ( bo ) ; goto fail ; } exec -> exec_bo = & bo -> base ; list_add_tail ( & to_vc4_bo ( & exec -> exec_bo -> base ) -> unref_head , & exec -> unref_list ) ; exec -> ct0ca = exec -> exec_bo -> paddr + bin_offset ; exec -> bin_u = bin ; exec -> shader_rec_v = exec -> exec_bo -> vaddr + shader_rec_offset ; exec -> shader_rec_p = exec -> exec_bo -> paddr + shader_rec_offset ; exec -> shader_rec_size = args -> shader_rec_size ; exec -> uniforms_v = exec -> exec_bo -> vaddr + uniforms_offset ; exec -> uniforms_p = exec -> exec_bo -> paddr + uniforms_offset ; exec -> uniforms_size = args -> uniforms_size ; ret = vc4_validate_bin_cl ( dev , exec -> exec_bo -> vaddr + bin_offset , bin , exec ) ; if ( ret ) goto fail ; ret = vc4_validate_shader_recs ( dev , exec ) ; if ( ret ) goto fail ; ret = vc4_wait_for_seqno ( dev , exec -> bin_dep_seqno , ~ 0ull , true ) ; fail : drm_free_large ( temp ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"overflow<S2SV_blank>in<S2SV_blank>exec<S2SV_blank>arguments\\\\n\" ) ; ret = - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static int splice_pipe_to_pipe ( struct pipe_inode_info * ipipe , struct pipe_inode_info * opipe , size_t len , unsigned int flags ) { struct pipe_buffer * ibuf , * obuf ; int ret = 0 , nbuf ; bool input_wakeup = false ; retry : ret = ipipe_prep ( ipipe , flags ) ; if ( ret ) return ret ; ret = opipe_prep ( opipe , flags ) ; if ( ret ) return ret ; pipe_double_lock ( ipipe , opipe ) ; do { if ( ! opipe -> readers ) { send_sig ( SIGPIPE , current , 0 ) ; if ( ! ret ) ret = - EPIPE ; break ; } if ( ! ipipe -> nrbufs && ! ipipe -> writers ) break ; if ( ! ipipe -> nrbufs || opipe -> nrbufs >= opipe -> buffers ) { if ( ret ) break ; if ( flags & SPLICE_F_NONBLOCK ) { ret = - EAGAIN ; break ; } pipe_unlock ( ipipe ) ; pipe_unlock ( opipe ) ; goto retry ; } ibuf = ipipe -> bufs + ipipe -> curbuf ; nbuf = ( opipe -> curbuf + opipe -> nrbufs ) & ( opipe -> buffers - 1 ) ; obuf = opipe -> bufs + nbuf ; if ( len >= ibuf -> len ) { * obuf = * ibuf ; ibuf -> ops = NULL ; opipe -> nrbufs ++ ; ipipe -> curbuf = ( ipipe -> curbuf + 1 ) & ( ipipe -> buffers - 1 ) ; ipipe -> nrbufs -- ; input_wakeup = true ; } else { <S2SV_StartBug> pipe_buf_get ( ipipe , ibuf ) ; <S2SV_EndBug> * obuf = * ibuf ; obuf -> flags &= ~ PIPE_BUF_FLAG_GIFT ; obuf -> len = len ; opipe -> nrbufs ++ ; ibuf -> offset += obuf -> len ; ibuf -> len -= obuf -> len ; } ret += obuf -> len ; len -= obuf -> len ; } while ( len ) ; pipe_unlock ( ipipe ) ; pipe_unlock ( opipe ) ; if ( ret > 0 ) wakeup_pipe_readers ( opipe ) ; if ( input_wakeup ) wakeup_pipe_writers ( ipipe ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { if ( ! <S2SV_ModStart> , ibuf ) ) { if ( ret == 0 ) ret = - EFAULT ; break ; } <S2SV_ModEnd> * obuf =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10506\n\n```\nCWE-369 static OPJ_BOOL opj_pi_next_pcrl ( opj_pi_iterator_t * pi ) { opj_pi_comp_t * comp = NULL ; opj_pi_resolution_t * res = NULL ; OPJ_UINT32 index = 0 ; if ( ! pi -> first ) { comp = & pi -> comps [ pi -> compno ] ; goto LABEL_SKIP ; } else { OPJ_UINT32 compno , resno ; pi -> first = 0 ; pi -> dx = 0 ; pi -> dy = 0 ; for ( compno = 0 ; compno < pi -> numcomps ; compno ++ ) { comp = & pi -> comps [ compno ] ; for ( resno = 0 ; resno < comp -> numresolutions ; resno ++ ) { OPJ_UINT32 dx , dy ; res = & comp -> resolutions [ resno ] ; dx = comp -> dx * ( 1u << ( res -> pdx + comp -> numresolutions - 1 - resno ) ) ; dy = comp -> dy * ( 1u << ( res -> pdy + comp -> numresolutions - 1 - resno ) ) ; pi -> dx = ! pi -> dx ? dx : opj_uint_min ( pi -> dx , dx ) ; pi -> dy = ! pi -> dy ? dy : opj_uint_min ( pi -> dy , dy ) ; } } } if ( ! pi -> tp_on ) { pi -> poc . ty0 = pi -> ty0 ; pi -> poc . tx0 = pi -> tx0 ; pi -> poc . ty1 = pi -> ty1 ; pi -> poc . tx1 = pi -> tx1 ; } for ( pi -> y = pi -> poc . ty0 ; pi -> y < pi -> poc . ty1 ; pi -> y += ( OPJ_INT32 ) ( pi -> dy - ( OPJ_UINT32 ) ( pi -> y % ( OPJ_INT32 ) pi -> dy ) ) ) { for ( pi -> x = pi -> poc . tx0 ; pi -> x < pi -> poc . tx1 ; pi -> x += ( OPJ_INT32 ) ( pi -> dx - ( OPJ_UINT32 ) ( pi -> x % ( OPJ_INT32 ) pi -> dx ) ) ) { for ( pi -> compno = pi -> poc . compno0 ; pi -> compno < pi -> poc . compno1 ; pi -> compno ++ ) { comp = & pi -> comps [ pi -> compno ] ; for ( pi -> resno = pi -> poc . resno0 ; pi -> resno < opj_uint_min ( pi -> poc . resno1 , comp -> numresolutions ) ; pi -> resno ++ ) { OPJ_UINT32 levelno ; OPJ_INT32 trx0 , try0 ; OPJ_INT32 trx1 , try1 ; OPJ_UINT32 rpx , rpy ; OPJ_INT32 prci , prcj ; res = & comp -> resolutions [ pi -> resno ] ; levelno = comp -> numresolutions - 1 - pi -> resno ; trx0 = opj_int_ceildiv ( pi -> tx0 , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) ; try0 = opj_int_ceildiv ( pi -> ty0 , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) ; trx1 = opj_int_ceildiv ( pi -> tx1 , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) ; try1 = opj_int_ceildiv ( pi -> ty1 , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) ; rpx = res -> pdx + levelno ; rpy = res -> pdy + levelno ; <S2SV_StartBug> if ( ! ( ( pi -> y % ( OPJ_INT32 ) ( comp -> dy << rpy ) == 0 ) || ( ( pi -> y == pi -> ty0 ) && <S2SV_EndBug> ( ( try0 << levelno ) % ( 1 << rpy ) ) ) ) ) { continue ; } if ( ! ( ( pi -> x % ( OPJ_INT32 ) ( comp -> dx << rpx ) == 0 ) || ( ( pi -> x == pi -> tx0 ) && ( ( trx0 << levelno ) % ( 1 << rpx ) ) ) ) ) { continue ; } if ( ( res -> pw == 0 ) || ( res -> ph == 0 ) ) { continue ; } if ( ( trx0 == trx1 ) || ( try0 == try1 ) ) { continue ; } prci = opj_int_floordivpow2 ( opj_int_ceildiv ( pi -> x , ( OPJ_INT32 ) ( comp -> dx << levelno ) ) , ( OPJ_INT32 ) res -> pdx ) - opj_int_floordivpow2 ( trx0 , ( OPJ_INT32 ) res -> pdx ) ; prcj = opj_int_floordivpow2 ( opj_int_ceildiv ( pi -> y , ( OPJ_INT32 ) ( comp -> dy << levelno ) ) , ( OPJ_INT32 ) res -> pdy ) - opj_int_floordivpow2 ( try0 , ( OPJ_INT32 ) res -> pdy ) ; pi -> precno = ( OPJ_UINT32 ) ( prci + prcj * ( OPJ_INT32 ) res -> pw ) ; for ( pi -> layno = pi -> poc . layno0 ; pi -> layno < pi -> poc . layno1 ; pi -> layno ++ ) { index = pi -> layno * pi -> step_l + pi -> resno * pi -> step_r + pi -> compno * pi -> step_c + pi -> precno * pi -> step_p ; if ( ! pi -> include [ index ] ) { pi -> include [ index ] = 1 ; return OPJ_TRUE ; } LABEL_SKIP : ; } } } } } return OPJ_FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( rpx >= 31 || ( ( comp -> dx << rpx ) >> rpx ) != comp -> dx || rpy >= 31 || ( ( comp -> dy << rpy ) >> rpy ) != comp -> dy ) { continue ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10021\n\n```\nCWE-000 static void sas_eh_finish_cmd ( struct scsi_cmnd * cmd ) { struct sas_ha_struct * sas_ha = SHOST_TO_SAS_HA ( cmd -> device -> host ) ; <S2SV_StartBug> struct sas_task * task = TO_SAS_TASK ( cmd ) ; <S2SV_EndBug> sas_end_task ( cmd , task ) ; <S2SV_StartBug> scsi_eh_finish_cmd ( cmd , & sas_ha -> eh_done_q ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct domain_device * dev = cmd_to_domain_dev ( cmd ) ; struct <S2SV_ModStart> task ) ; if ( dev_is_sata ( dev ) ) { list_move_tail ( & cmd -> eh_entry , & sas_ha -> eh_ata_q ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5356\n\n```\nCWE-119 static gboolean cosine_seek_read ( wtap * wth , gint64 seek_off , struct wtap_pkthdr * phdr , Buffer * buf , int * err , gchar * * err_info ) { <S2SV_StartBug> int pkt_len ; <S2SV_EndBug> char line [ COSINE_LINE_LENGTH ] ; if ( file_seek ( wth -> random_fh , seek_off , SEEK_SET , err ) == - 1 ) return FALSE ; if ( file_gets ( line , COSINE_LINE_LENGTH , wth -> random_fh ) == NULL ) { * err = file_error ( wth -> random_fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } <S2SV_StartBug> pkt_len = parse_cosine_rec_hdr ( phdr , line , err , err_info ) ; <S2SV_EndBug> if ( pkt_len == - 1 ) return FALSE ; <S2SV_StartBug> return parse_cosine_hex_dump ( wth -> random_fh , phdr , pkt_len , buf , err , <S2SV_EndBug> err_info ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err_info ) { <S2SV_ModEnd> char line [ <S2SV_ModStart> FALSE ; } return parse_cosine_packet <S2SV_ModEnd> ( wth -> <S2SV_ModStart> , phdr , buf , line <S2SV_ModEnd> , err ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfssvc_decode_readdirargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd_readdirargs * args ) { p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; args -> cookie = ntohl ( * p ++ ) ; args -> count = ntohl ( * p ++ ) ; args -> count = min_t ( u32 , args -> count , PAGE_SIZE ) ; <S2SV_StartBug> args -> buffer = page_address ( * ( rqstp -> rq_next_page ++ ) ) ; <S2SV_EndBug> <S2SV_StartBug> return xdr_argsize_check ( rqstp , p ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PAGE_SIZE ) ; if ( ! xdr_argsize_check ( rqstp , p ) ) return 0 ; <S2SV_ModStart> ) ; return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2017\n\n```\nCWE-399 static netdev_tx_t veth_xmit ( struct sk_buff * skb , struct net_device * dev ) { struct net_device * rcv = NULL ; struct veth_priv * priv , * rcv_priv ; struct veth_net_stats * stats , * rcv_stats ; int length ; priv = netdev_priv ( dev ) ; rcv = priv -> peer ; rcv_priv = netdev_priv ( rcv ) ; stats = this_cpu_ptr ( priv -> stats ) ; rcv_stats = this_cpu_ptr ( rcv_priv -> stats ) ; if ( ! ( rcv -> flags & IFF_UP ) ) goto tx_drop ; if ( dev -> features & NETIF_F_NO_CSUM ) skb -> ip_summed = rcv_priv -> ip_summed ; length = skb -> len + ETH_HLEN ; if ( dev_forward_skb ( rcv , skb ) != NET_RX_SUCCESS ) goto rx_drop ; stats -> tx_bytes += length ; stats -> tx_packets ++ ; rcv_stats -> rx_bytes += length ; rcv_stats -> rx_packets ++ ; return NETDEV_TX_OK ; tx_drop : kfree_skb ( skb ) ; stats -> tx_dropped ++ ; return NETDEV_TX_OK ; rx_drop : <S2SV_StartBug> kfree_skb ( skb ) ; <S2SV_EndBug> rcv_stats -> rx_dropped ++ ; return NETDEV_TX_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; rx_drop : <S2SV_ModEnd> rcv_stats -> rx_dropped\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_arg ( PyObject * obj , arg_ty * out , PyArena * arena ) { PyObject * tmp = NULL ; identifier arg ; expr_ty annotation ; <S2SV_StartBug> int lineno ; <S2SV_EndBug> int col_offset ; int end_lineno ; int end_col_offset ; if ( _PyObject_LookupAttrId ( obj , & PyId_arg , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"arg\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } else { int res ; res = obj2ast_identifier ( tmp , & arg , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_annotation , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; annotation = NULL ; } else { int res ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & annotation , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } else { int res ; res = obj2ast_int ( tmp , & lineno , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_col_offset , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } else { int res ; res = obj2ast_int ( tmp , & col_offset , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_end_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; end_lineno = 0 ; } else { int res ; res = obj2ast_int ( tmp , & end_lineno , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_end_col_offset , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; end_col_offset = 0 ; } else { int res ; res = obj2ast_int ( tmp , & end_col_offset , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = arg ( arg , annotation , lineno , col_offset , end_lineno , end_col_offset , <S2SV_EndBug> arena ) ; return 0 ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> expr_ty annotation ; string type_comment ; <S2SV_ModStart> , & annotation , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment <S2SV_ModStart> , annotation , type_comment ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1078\n\n```\nCWE-200 static int sco_sock_getsockopt_old ( struct socket * sock , int optname , char __user * optval , int __user * optlen ) { struct sock * sk = sock -> sk ; struct sco_options opts ; struct sco_conninfo cinfo ; int len , err = 0 ; BT_DBG ( \"sk<S2SV_blank>%p\" , sk ) ; if ( get_user ( len , optlen ) ) return - EFAULT ; lock_sock ( sk ) ; switch ( optname ) { case SCO_OPTIONS : if ( sk -> sk_state != BT_CONNECTED ) { err = - ENOTCONN ; break ; } opts . mtu = sco_pi ( sk ) -> conn -> mtu ; BT_DBG ( \"mtu<S2SV_blank>%d\" , opts . mtu ) ; len = min_t ( unsigned int , len , sizeof ( opts ) ) ; if ( copy_to_user ( optval , ( char * ) & opts , len ) ) err = - EFAULT ; break ; case SCO_CONNINFO : if ( sk -> sk_state != BT_CONNECTED ) { err = - ENOTCONN ; break ; } <S2SV_StartBug> cinfo . hci_handle = sco_pi ( sk ) -> conn -> hcon -> handle ; <S2SV_EndBug> memcpy ( cinfo . dev_class , sco_pi ( sk ) -> conn -> hcon -> dev_class , 3 ) ; len = min_t ( unsigned int , len , sizeof ( cinfo ) ) ; if ( copy_to_user ( optval , ( char * ) & cinfo , len ) ) err = - EFAULT ; break ; default : err = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } memset ( & cinfo , 0 , sizeof ( cinfo ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t decoder_decode ( vpx_codec_alg_priv_t * ctx , const uint8_t * data , unsigned int data_sz , void * user_priv , long deadline ) { const uint8_t * data_start = data ; <S2SV_StartBug> const uint8_t * data_end = data + data_sz ; <S2SV_EndBug> <S2SV_StartBug> vpx_codec_err_t res = VPX_CODEC_OK ; <S2SV_EndBug> uint32_t sizes [ 8 ] ; <S2SV_StartBug> int frames_this_pts , frame_count = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( data == NULL || data_sz == 0 ) <S2SV_EndBug> <S2SV_StartBug> return VPX_CODEC_INVALID_PARAM ; <S2SV_EndBug> <S2SV_StartBug> parse_superframe_index ( data , data_sz , sizes , & frames_this_pts ) ; <S2SV_EndBug> do { if ( data_sz && ( * data_start & 0xe0 ) == 0xc0 ) { <S2SV_StartBug> const uint8_t marker = * data_start ; <S2SV_EndBug> const uint32_t frames = ( marker & 0x7 ) + 1 ; const uint32_t mag = ( ( marker >> 3 ) & 0x3 ) + 1 ; const uint32_t index_sz = 2 + mag * frames ; if ( data_sz >= index_sz && data_start [ index_sz - 1 ] == marker ) { data_start += index_sz ; data_sz -= index_sz ; if ( data_start < data_end ) continue ; else break ; } } if ( frames_this_pts ) { uint32_t this_sz = sizes [ frame_count ] ; if ( data_sz < this_sz ) { ctx -> base . err_detail = \"Invalid<S2SV_blank>frame<S2SV_blank>size<S2SV_blank>in<S2SV_blank>index\" ; return VPX_CODEC_CORRUPT_FRAME ; } data_sz = this_sz ; frame_count ++ ; } res = decode_one ( ctx , & data_start , data_sz , user_priv , deadline ) ; assert ( data_start >= data ) ; assert ( data_start <= data_end ) ; if ( res ) break ; while ( data_start < data_end && * data_start == 0 ) data_start ++ ; data_sz = ( unsigned int ) ( data_end - data_start ) ; } while ( data_start < data_end ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const uint8_t * const <S2SV_ModStart> ; vpx_codec_err_t res ; uint32_t frame_sizes <S2SV_ModEnd> [ 8 ] <S2SV_ModStart> ] ; int frame_count <S2SV_ModEnd> ; if ( <S2SV_ModStart> data == NULL && <S2SV_ModEnd> data_sz == 0 <S2SV_ModStart> == 0 ) { ctx -> flushed = 1 ; return VPX_CODEC_OK ; } ctx -> flushed = 0 ; if ( ctx -> frame_workers == NULL ) { const vpx_codec_err_t res = init_decoder ( ctx ) ; if ( res != VPX_CODEC_OK ) return res ; } res = vp9_parse_superframe_index <S2SV_ModEnd> ( data , <S2SV_ModStart> , data_sz , frame_sizes , & frame_count , ctx -> decrypt_cb , ctx -> decrypt_state ) ; if ( res != VPX_CODEC_OK ) return res ; if ( ctx -> frame_parallel_decode ) { if ( frame_count > 0 ) { int i ; for ( i = 0 ; i < frame_count ; ++ i ) { const uint8_t * data_start_copy = data_start ; const uint32_t frame_size = frame_sizes [ i ] ; if ( data_start < data || frame_size > ( uint32_t ) ( data_end - data_start ) ) { set_error_detail ( ctx , \"Invalid<S2SV_blank>frame<S2SV_blank>size<S2SV_blank>in<S2SV_blank>index\" ) ; return VPX_CODEC_CORRUPT_FRAME ; } if ( ctx -> available_threads == 0 ) { if ( ctx -> num_cache_frames < FRAME_CACHE_SIZE ) { wait_worker_and_cache_frame ( ctx ) ; } else { set_error_detail ( ctx , \"Frame<S2SV_blank>output<S2SV_blank>cache<S2SV_blank>is<S2SV_blank>full.\" ) ; return VPX_CODEC_ERROR ; } } res = decode_one ( ctx , & data_start_copy , frame_size , user_priv , deadline ) ; if ( res != VPX_CODEC_OK ) return res ; data_start += frame_size ; } } else { if ( ctx -> available_threads == 0 ) { if ( ctx -> num_cache_frames < FRAME_CACHE_SIZE ) { wait_worker_and_cache_frame ( ctx ) ; } else { set_error_detail ( ctx , \"Frame<S2SV_blank>output<S2SV_blank>cache<S2SV_blank>is<S2SV_blank>full.\" ) ; return VPX_CODEC_ERROR ; } } res = decode_one ( ctx , & data , data_sz , user_priv , deadline ) ; if ( res != VPX_CODEC_OK ) return res ; } } else { if ( frame_count > 0 ) { int i ; for ( i = 0 ; i < frame_count ; ++ i ) { const uint8_t * data_start_copy = data_start ; const uint32_t frame_size = frame_sizes [ i ] ; vpx_codec_err_t res ; if ( data_start < data || frame_size > ( uint32_t ) ( data_end - data_start ) ) { set_error_detail ( ctx , \"Invalid<S2SV_blank>frame<S2SV_blank>size<S2SV_blank>in<S2SV_blank>index\" ) ; return VPX_CODEC_CORRUPT_FRAME ; } res = decode_one ( ctx , & data_start_copy , frame_size , user_priv , deadline ) ; if ( res != VPX_CODEC_OK ) return res ; data_start += frame_size ; } } else { while ( data_start < data_end ) { const uint32_t frame_size = ( uint32_t ) ( data_end - data_start ) ; const vpx_codec_err_t res = decode_one ( ctx , & data_start , frame_size , user_priv , deadline ) ; if ( res != VPX_CODEC_OK ) return res ; while ( data_start < data_end <S2SV_ModEnd> ) { const <S2SV_ModStart> uint8_t marker = read_marker ( ctx -> decrypt_cb , ctx -> decrypt_state , data_start ) ; if ( marker ) break ; ++ data_start ; } } } } <S2SV_ModEnd> return res ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static inline void set_socket_blocking ( int s , int blocking ) { int opts ; <S2SV_StartBug> opts = fcntl ( s , F_GETFL ) ; <S2SV_EndBug> if ( opts < 0 ) APPL_TRACE_ERROR ( \"set<S2SV_blank>blocking<S2SV_blank>(%s)\" , strerror ( errno ) ) ; if ( blocking ) opts &= ~ O_NONBLOCK ; else opts |= O_NONBLOCK ; <S2SV_StartBug> if ( fcntl ( s , F_SETFL , opts ) < 0 ) <S2SV_EndBug> APPL_TRACE_ERROR ( \"set<S2SV_blank>blocking<S2SV_blank>(%s)\" , strerror ( errno ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; opts = TEMP_FAILURE_RETRY ( <S2SV_ModStart> s , F_GETFL ) <S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> F_SETFL , opts )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16546\n\n```\nCWE-119 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; one = 1 ; image = AcquireImage ( image_info ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; Rec2 . RecordLength = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec . RecordLength ) ; if ( Rec . RecordLength > GetBlobSize ( image ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> x_resolution = BitmapHeader1 . HorzRes / 470.0 ; image -> y_resolution = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > <S2SV_StartBug> ( Rec2 . RecordLength - 2 - 2 ) / 3 ) <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> x_resolution = BitmapHeader2 . HorzRes / 470.0 ; image -> y_resolution = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; UnpackRaster : status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp <= 16 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelPacket * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ReplaceImageInList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; if ( ( WPG_Palette . NumOfEntries - WPG_Palette . StartIndex ) > ( Rec2 . RecordLength - 2 - 2 ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; image -> rows = Bitmap2Header1 . Height ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) break ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { size_t one ; one = 1 ; image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelPacket * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk + 1 , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( BImgBuff , i , image , bpp ) ; } if ( BImgBuff ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ReplaceImageInList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ReplaceImageInList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) / 3 ) ThrowReaderException ( CorruptImageError , \"InvalidColormapIndex\" ) ; if ( WPG_Palette . StartIndex > WPG_Palette . NumOfEntries\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 static int jp2_bpcc_getdata ( jp2_box_t * box , jas_stream_t * in ) { jp2_bpcc_t * bpcc = & box -> data . bpcc ; <S2SV_StartBug> unsigned int i ; <S2SV_EndBug> bpcc -> numcmpts = box -> datalen ; if ( ! ( bpcc -> bpcs = jas_alloc2 ( bpcc -> numcmpts , sizeof ( uint_fast8_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < bpcc -> numcmpts ; ++ i ) { if ( jp2_getuint8 ( in , & bpcc -> bpcs [ i ] ) ) { return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int i ; bpcc -> bpcs = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2304\n\n```\nCWE-22 DEFINE_TEST ( test_write_disk_secure ) { # if defined ( _WIN32 ) && ! defined ( __CYGWIN__ ) skipping ( \"archive_write_disk<S2SV_blank>security<S2SV_blank>checks<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>on<S2SV_blank>Windows\" ) ; # else struct archive * a ; struct archive_entry * ae ; struct stat st ; assertUmask ( UMASK ) ; assert ( ( a = archive_write_disk_new ( ) ) != NULL ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"dir\" ) ; archive_entry_set_mode ( ae , S_IFDIR | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; archive_entry_free ( ae ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir/filea\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir/fileb\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; archive_write_disk_set_options ( a , ARCHIVE_EXTRACT_SECURE_SYMLINKS ) ; failure ( \"Extracting<S2SV_blank>a<S2SV_blank>file<S2SV_blank>through<S2SV_blank>a<S2SV_blank>symlink<S2SV_blank>should<S2SV_blank>fail<S2SV_blank>here.\" ) ; assertEqualInt ( ARCHIVE_FAILED , archive_write_header ( a , ae ) ) ; archive_entry_free ( ae ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir2\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir2/filec\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; archive_write_disk_set_options ( a , ARCHIVE_EXTRACT_SECURE_SYMLINKS | ARCHIVE_EXTRACT_UNLINK ) ; assertEqualIntA ( a , ARCHIVE_OK , archive_write_header ( a , ae ) ) ; archive_entry_free ( ae ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir3\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir3\" ) ; archive_entry_set_mode ( ae , S_IFDIR | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertEqualInt ( 0 , lstat ( \"link_to_dir3\" , & st ) ) ; assert ( S_ISLNK ( st . st_mode ) ) ; archive_entry_free ( ae ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir4\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"nonexistent_dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir4\" ) ; archive_entry_set_mode ( ae , S_IFDIR | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertEqualInt ( 0 , lstat ( \"link_to_dir4\" , & st ) ) ; assert ( S_ISDIR ( st . st_mode ) ) ; archive_entry_free ( ae ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"non_dir\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; archive_entry_copy_pathname ( ae , \"link_to_dir5\" ) ; archive_entry_set_mode ( ae , S_IFLNK | 0777 ) ; archive_entry_set_symlink ( ae , \"non_dir\" ) ; archive_write_disk_set_options ( a , 0 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"link_to_dir5\" ) ; archive_entry_set_mode ( ae , S_IFDIR | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertEqualInt ( 0 , lstat ( \"link_to_dir5\" , & st ) ) ; assert ( S_ISDIR ( st . st_mode ) ) ; archive_entry_free ( ae ) ; <S2SV_StartBug> assertEqualInt ( ARCHIVE_OK , archive_write_free ( a ) ) ; <S2SV_EndBug> assert ( 0 == lstat ( \"dir\" , & st ) ) ; failure ( \"dir:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 0777 ) == 0755 ) ; assert ( 0 == lstat ( \"link_to_dir\" , & st ) ) ; failure ( \"link_to_dir:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( S_ISLNK ( st . st_mode ) ) ; # if HAVE_LCHMOD failure ( \"link_to_dir:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 07777 ) == 0755 ) ; # endif assert ( 0 == lstat ( \"dir/filea\" , & st ) ) ; failure ( \"dir/filea:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 07777 ) == 0755 ) ; failure ( \"dir/fileb:<S2SV_blank>This<S2SV_blank>file<S2SV_blank>should<S2SV_blank>not<S2SV_blank>have<S2SV_blank>been<S2SV_blank>created\" ) ; assert ( 0 != lstat ( \"dir/fileb\" , & st ) ) ; assert ( 0 == lstat ( \"link_to_dir2\" , & st ) ) ; failure ( \"link_to_dir2<S2SV_blank>should<S2SV_blank>have<S2SV_blank>been<S2SV_blank>re-created<S2SV_blank>as<S2SV_blank>a<S2SV_blank>true<S2SV_blank>dir\" ) ; assert ( S_ISDIR ( st . st_mode ) ) ; failure ( \"link_to_dir2:<S2SV_blank>Implicit<S2SV_blank>dir<S2SV_blank>creation<S2SV_blank>should<S2SV_blank>obey<S2SV_blank>umask,<S2SV_blank>but<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 0777 ) == 0755 ) ; assert ( 0 == lstat ( \"link_to_dir2/filec\" , & st ) ) ; assert ( S_ISREG ( st . st_mode ) ) ; failure ( \"link_to_dir2/filec:<S2SV_blank>st.st_mode=%o\" , st . st_mode ) ; assert ( ( st . st_mode & 07777 ) == 0755 ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ae ) ; assert ( ( ae = archive_entry_new ( ) ) != NULL ) ; archive_entry_copy_pathname ( ae , \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; assert ( 0 == archive_write_header ( a , ae ) ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertFileExists ( \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ; assert ( 0 == unlink ( \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ) ; assert ( archive_entry_clear ( ae ) != NULL ) ; archive_entry_copy_pathname ( ae , \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ; archive_entry_set_mode ( ae , S_IFREG | 0777 ) ; archive_write_disk_set_options ( a , ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS ) ; failure ( \"Extracting<S2SV_blank>an<S2SV_blank>absolute<S2SV_blank>path<S2SV_blank>should<S2SV_blank>fail<S2SV_blank>here.\" ) ; assertEqualInt ( ARCHIVE_FAILED , archive_write_header ( a , ae ) ) ; archive_entry_free ( ae ) ; assert ( 0 == archive_write_finish_entry ( a ) ) ; assertFileNotExists ( \"/tmp/libarchive_test-test_write_disk_secure-absolute_path.tmp\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static void hugetlb_vm_op_close ( struct vm_area_struct * vma ) { struct hstate * h = hstate_vma ( vma ) ; <S2SV_StartBug> struct resv_map * reservations = vma_resv_map ( vma ) ; <S2SV_EndBug> unsigned long reserve ; unsigned long start ; unsigned long end ; if ( reservations ) { start = vma_hugecache_offset ( h , vma , vma -> vm_start ) ; end = vma_hugecache_offset ( h , vma , vma -> vm_end ) ; reserve = ( end - start ) - region_count ( & reservations -> regions , start , end ) ; kref_put ( & reservations -> refs , resv_map_release ) ; if ( reserve ) { hugetlb_acct_memory ( h , - reserve ) ; <S2SV_StartBug> hugetlb_put_quota ( vma -> vm_file -> f_mapping , reserve ) ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> reservations = vma_resv_map ( vma ) ; struct hugepage_subpool * spool = subpool_vma <S2SV_ModStart> reserve ) ; hugepage_subpool_put_pages ( spool <S2SV_ModEnd> , reserve )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20760\n\n```\nCWE-787 char * gf_text_get_utf8_line ( char * szLine , u32 lineSize , FILE * txt_in , s32 unicode_type ) { u32 i , j , len ; char * sOK ; char szLineConv [ 1024 ] ; unsigned short * sptr ; memset ( szLine , 0 , sizeof ( char ) * lineSize ) ; sOK = fgets ( szLine , lineSize , txt_in ) ; if ( ! sOK ) return NULL ; if ( unicode_type <= 1 ) { j = 0 ; len = ( u32 ) strlen ( szLine ) ; for ( i = 0 ; i < len ; i ++ ) { if ( ! unicode_type && ( szLine [ i ] & 0x80 ) ) { if ( ( szLine [ i + 1 ] & 0xc0 ) != 0x80 ) { szLineConv [ j ] = 0xc0 | ( ( szLine [ i ] >> 6 ) & 0x3 ) ; j ++ ; szLine [ i ] &= 0xbf ; } else if ( ( szLine [ i ] & 0xe0 ) == 0xc0 ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else if ( ( szLine [ i ] & 0xf0 ) == 0xe0 ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else if ( ( szLine [ i ] & 0xf8 ) == 0xf0 ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { i += 1 ; continue ; } } szLineConv [ j ] = szLine [ i ] ; j ++ ; } szLineConv [ j ] = 0 ; strcpy ( szLine , szLineConv ) ; return sOK ; } # ifdef GPAC_BIG_ENDIAN if ( unicode_type == 3 ) { # else if ( unicode_type == 2 ) { # endif i = 0 ; while ( 1 ) { char c ; if ( ! szLine [ i ] && ! szLine [ i + 1 ] ) break ; c = szLine [ i + 1 ] ; szLine [ i + 1 ] = szLine [ i ] ; szLine [ i ] = c ; i += 2 ; } } sptr = ( u16 * ) szLine ; i = ( u32 ) gf_utf8_wcstombs ( szLineConv , 1024 , ( const unsigned short * * ) & sptr ) ; <S2SV_StartBug> szLineConv [ i ] = 0 ; <S2SV_EndBug> strcpy ( szLine , szLineConv ) ; if ( unicode_type == 3 ) fgetc ( txt_in ) ; return sOK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sptr ) ; if ( i >= ( u32 ) ARRAY_LENGTH ( szLineConv ) ) return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1465\n\n```\nCWE-17 int ip_forward ( struct sk_buff * skb ) { u32 mtu ; struct iphdr * iph ; struct rtable * rt ; struct ip_options * opt = & ( IPCB ( skb ) -> opt ) ; if ( skb -> pkt_type != PACKET_HOST ) goto drop ; if ( skb_warn_if_lro ( skb ) ) goto drop ; if ( ! xfrm4_policy_check ( NULL , XFRM_POLICY_FWD , skb ) ) goto drop ; if ( IPCB ( skb ) -> opt . router_alert && ip_call_ra_chain ( skb ) ) return NET_RX_SUCCESS ; skb_forward_csum ( skb ) ; if ( ip_hdr ( skb ) -> ttl <= 1 ) goto too_many_hops ; if ( ! xfrm4_route_forward ( skb ) ) goto drop ; rt = skb_rtable ( skb ) ; if ( opt -> is_strictroute && rt -> rt_uses_gateway ) goto sr_failed ; IPCB ( skb ) -> flags |= IPSKB_FORWARDED ; mtu = ip_dst_mtu_maybe_forward ( & rt -> dst , true ) ; if ( ! ip_may_fragment ( skb ) && ip_exceeds_mtu ( skb , mtu ) ) { IP_INC_STATS ( dev_net ( rt -> dst . dev ) , IPSTATS_MIB_FRAGFAILS ) ; icmp_send ( skb , ICMP_DEST_UNREACH , ICMP_FRAG_NEEDED , htonl ( mtu ) ) ; goto drop ; } if ( skb_cow ( skb , LL_RESERVED_SPACE ( rt -> dst . dev ) + rt -> dst . header_len ) ) goto drop ; iph = ip_hdr ( skb ) ; ip_decrease_ttl ( iph ) ; <S2SV_StartBug> if ( rt -> rt_flags & RTCF_DOREDIRECT && ! opt -> srr && ! skb_sec_path ( skb ) ) <S2SV_EndBug> ip_rt_send_redirect ( skb ) ; skb -> priority = rt_tos2priority ( iph -> tos ) ; return NF_HOOK ( NFPROTO_IPV4 , NF_INET_FORWARD , skb , skb -> dev , rt -> dst . dev , ip_forward_finish ) ; sr_failed : icmp_send ( skb , ICMP_DEST_UNREACH , ICMP_SR_FAILED , 0 ) ; goto drop ; too_many_hops : IP_INC_STATS_BH ( dev_net ( skb_dst ( skb ) -> dev ) , IPSTATS_MIB_INHDRERRORS ) ; icmp_send ( skb , ICMP_TIME_EXCEEDED , ICMP_EXC_TTL , 0 ) ; drop : kfree_skb ( skb ) ; return NET_RX_DROP ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( IPCB ( skb ) -> flags & IPSKB_DOREDIRECT <S2SV_ModEnd> && ! opt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000085\n\n```\nCWE-125 int cli_scanxar ( cli_ctx * ctx ) { int rc = CL_SUCCESS ; unsigned int cksum_fails = 0 ; unsigned int extract_errors = 0 ; # if HAVE_LIBXML2 int fd = - 1 ; struct xar_header hdr ; fmap_t * map = * ctx -> fmap ; <S2SV_StartBug> long length , offset , size , at ; <S2SV_EndBug> int encoding ; z_stream strm ; char * toc , * tmpname ; xmlTextReaderPtr reader = NULL ; int a_hash , e_hash ; unsigned char * a_cksum = NULL , * e_cksum = NULL ; void * a_hash_ctx = NULL , * e_hash_ctx = NULL ; char result [ SHA1_HASH_SIZE ] ; memset ( & strm , 0x00 , sizeof ( z_stream ) ) ; if ( fmap_readn ( * ctx -> fmap , & hdr , 0 , sizeof ( hdr ) ) != sizeof ( hdr ) ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Invalid<S2SV_blank>header,<S2SV_blank>too<S2SV_blank>short.\\\\n\" ) ; return CL_EFORMAT ; } hdr . magic = be32_to_host ( hdr . magic ) ; if ( hdr . magic == XAR_HEADER_MAGIC ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Matched<S2SV_blank>magic\\\\n\" ) ; } else { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Invalid<S2SV_blank>magic\\\\n\" ) ; return CL_EFORMAT ; } hdr . size = be16_to_host ( hdr . size ) ; hdr . version = be16_to_host ( hdr . version ) ; hdr . toc_length_compressed = be64_to_host ( hdr . toc_length_compressed ) ; hdr . toc_length_decompressed = be64_to_host ( hdr . toc_length_decompressed ) ; hdr . chksum_alg = be32_to_host ( hdr . chksum_alg ) ; strm . next_in = ( unsigned char * ) fmap_need_off_once ( * ctx -> fmap , hdr . size , hdr . toc_length_compressed ) ; if ( strm . next_in == NULL ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>fmap_need_off_once<S2SV_blank>fails<S2SV_blank>on<S2SV_blank>TOC.\\\\n\" ) ; return CL_EREAD ; } strm . avail_in = hdr . toc_length_compressed ; toc = cli_malloc ( hdr . toc_length_decompressed + 1 ) ; if ( toc == NULL ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_malloc<S2SV_blank>fails<S2SV_blank>on<S2SV_blank>TOC<S2SV_blank>decompress<S2SV_blank>buffer.\\\\n\" ) ; return CL_EMEM ; } toc [ hdr . toc_length_decompressed ] = '\\\\0' ; strm . avail_out = hdr . toc_length_decompressed ; strm . next_out = ( unsigned char * ) toc ; rc = inflateInit ( & strm ) ; if ( rc != Z_OK ) { cli_dbgmsg ( \"cli_scanxar:inflateInit<S2SV_blank>error<S2SV_blank>%i<S2SV_blank>\\\\n\" , rc ) ; rc = CL_EFORMAT ; goto exit_toc ; } rc = inflate ( & strm , Z_SYNC_FLUSH ) ; if ( rc != Z_OK && rc != Z_STREAM_END ) { cli_dbgmsg ( \"cli_scanxar:inflate<S2SV_blank>error<S2SV_blank>%i<S2SV_blank>\\\\n\" , rc ) ; rc = CL_EFORMAT ; goto exit_toc ; } rc = inflateEnd ( & strm ) ; if ( rc != Z_OK ) { cli_dbgmsg ( \"cli_scanxar:inflateEnd<S2SV_blank>error<S2SV_blank>%i<S2SV_blank>\\\\n\" , rc ) ; rc = CL_EFORMAT ; <S2SV_StartBug> goto exit_toc ; <S2SV_EndBug> } cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>scanning<S2SV_blank>xar<S2SV_blank>TOC<S2SV_blank>xml<S2SV_blank>in<S2SV_blank>memory.\\\\n\" ) ; rc = cli_mem_scandesc ( toc , hdr . toc_length_decompressed , ctx ) ; if ( rc != CL_SUCCESS ) { if ( rc != CL_VIRUS || ! SCAN_ALL ) goto exit_toc ; } if ( ctx -> engine -> keeptmp ) { if ( ( rc = cli_gentempfd ( ctx -> engine -> tmpdir , & tmpname , & fd ) ) != CL_SUCCESS ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>create<S2SV_blank>temporary<S2SV_blank>file<S2SV_blank>for<S2SV_blank>TOC.\\\\n\" ) ; goto exit_toc ; } if ( cli_writen ( fd , toc , hdr . toc_length_decompressed ) < 0 ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_writen<S2SV_blank>error<S2SV_blank>writing<S2SV_blank>TOC.\\\\n\" ) ; rc = CL_EWRITE ; xar_cleanup_temp_file ( ctx , fd , tmpname ) ; goto exit_toc ; } rc = xar_cleanup_temp_file ( ctx , fd , tmpname ) ; if ( rc != CL_SUCCESS ) goto exit_toc ; } reader = xmlReaderForMemory ( toc , hdr . toc_length_decompressed , \"noname.xml\" , NULL , CLAMAV_MIN_XMLREADER_FLAGS ) ; if ( reader == NULL ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>xmlReaderForMemory<S2SV_blank>error<S2SV_blank>for<S2SV_blank>TOC\\\\n\" ) ; goto exit_toc ; } rc = xar_scan_subdocuments ( reader , ctx ) ; if ( rc != CL_SUCCESS ) { cli_dbgmsg ( \"xar_scan_subdocuments<S2SV_blank>returns<S2SV_blank>%i.\\\\n\" , rc ) ; goto exit_reader ; } fd = - 1 ; tmpname = NULL ; while ( CL_SUCCESS == ( rc = xar_get_toc_data_values ( reader , & length , & offset , & size , & encoding , & a_cksum , & a_hash , & e_cksum , & e_hash ) ) ) { int do_extract_cksum = 1 ; unsigned char * blockp ; void * a_sc , * e_sc ; void * a_mc , * e_mc ; char * expected ; if ( fd > - 1 && tmpname ) { rc = xar_cleanup_temp_file ( ctx , fd , tmpname ) ; if ( rc != CL_SUCCESS ) goto exit_reader ; } at = offset + hdr . toc_length_compressed + hdr . size ; if ( ( rc = cli_gentempfd ( ctx -> engine -> tmpdir , & tmpname , & fd ) ) != CL_SUCCESS ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>generate<S2SV_blank>temporary<S2SV_blank>file.\\\\n\" ) ; goto exit_reader ; } <S2SV_StartBug> cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>decompress<S2SV_blank>into<S2SV_blank>temp<S2SV_blank>file:\\\\n%s,<S2SV_blank>size<S2SV_blank>%li,\\\\n\" <S2SV_EndBug> \"from<S2SV_blank>xar<S2SV_blank>heap<S2SV_blank>offset<S2SV_blank>%li<S2SV_blank>length<S2SV_blank>%li\\\\n\" , tmpname , size , offset , length ) ; a_hash_ctx = xar_hash_init ( a_hash , & a_sc , & a_mc ) ; e_hash_ctx = xar_hash_init ( e_hash , & e_sc , & e_mc ) ; switch ( encoding ) { case CL_TYPE_GZ : memset ( & strm , 0 , sizeof ( strm ) ) ; if ( ( rc = inflateInit ( & strm ) ) != Z_OK ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>InflateInit<S2SV_blank>failed:<S2SV_blank>%d\\\\n\" , rc ) ; rc = CL_EFORMAT ; extract_errors ++ ; break ; } while ( ( size_t ) at < map -> len && ( unsigned long ) at < offset + hdr . toc_length_compressed + hdr . size + length ) { unsigned long avail_in ; void * next_in ; unsigned int bytes = MIN ( map -> len - at , map -> pgsz ) ; bytes = MIN ( length , bytes ) ; if ( ! ( strm . next_in = next_in = ( void * ) fmap_need_off_once ( map , at , bytes ) ) ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>read<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%lu.\\\\n\" , bytes , ( long unsigned ) at ) ; inflateEnd ( & strm ) ; rc = CL_EREAD ; goto exit_tmpfile ; } at += bytes ; strm . avail_in = avail_in = bytes ; do { int inf , outsize = 0 ; unsigned char buff [ FILEBUFF ] ; strm . avail_out = sizeof ( buff ) ; strm . next_out = buff ; inf = inflate ( & strm , Z_SYNC_FLUSH ) ; if ( inf != Z_OK && inf != Z_STREAM_END && inf != Z_BUF_ERROR ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>inflate<S2SV_blank>error<S2SV_blank>%i<S2SV_blank>%s.\\\\n\" , inf , strm . msg ? strm . msg : \"\" ) ; rc = CL_EFORMAT ; extract_errors ++ ; break ; } bytes = sizeof ( buff ) - strm . avail_out ; if ( e_hash_ctx != NULL ) xar_hash_update ( e_hash_ctx , buff , bytes , e_hash ) ; if ( cli_writen ( fd , buff , bytes ) < 0 ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_writen<S2SV_blank>error<S2SV_blank>file<S2SV_blank>%s.\\\\n\" , tmpname ) ; inflateEnd ( & strm ) ; rc = CL_EWRITE ; goto exit_tmpfile ; } outsize += sizeof ( buff ) - strm . avail_out ; if ( cli_checklimits ( \"cli_scanxar\" , ctx , outsize , 0 , 0 ) != CL_CLEAN ) { break ; } if ( inf == Z_STREAM_END ) { break ; } } while ( strm . avail_out == 0 ) ; if ( rc != CL_SUCCESS ) break ; avail_in -= strm . avail_in ; if ( a_hash_ctx != NULL ) xar_hash_update ( a_hash_ctx , next_in , avail_in , a_hash ) ; } inflateEnd ( & strm ) ; break ; case CL_TYPE_7Z : # define CLI_LZMA_OBUF_SIZE 1024 * 1024 # define CLI_LZMA_HDR_SIZE LZMA_PROPS_SIZE + 8 # define CLI_LZMA_IBUF_SIZE CLI_LZMA_OBUF_SIZE >> 2 { struct CLI_LZMA lz ; <S2SV_StartBug> unsigned long in_remaining = length ; <S2SV_EndBug> unsigned long out_size = 0 ; unsigned char * buff = __lzma_wrap_alloc ( NULL , CLI_LZMA_OBUF_SIZE ) ; <S2SV_StartBug> int lret ; <S2SV_EndBug> memset ( & lz , 0 , sizeof ( lz ) ) ; if ( buff == NULL ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>memory<S2SV_blank>request<S2SV_blank>for<S2SV_blank>lzma<S2SV_blank>decompression<S2SV_blank>buffer<S2SV_blank>fails.\\\\n\" ) ; rc = CL_EMEM ; goto exit_tmpfile ; } blockp = ( void * ) fmap_need_off_once ( map , at , CLI_LZMA_HDR_SIZE ) ; if ( blockp == NULL ) { char errbuff [ 128 ] ; cli_strerror ( errno , errbuff , sizeof ( errbuff ) ) ; <S2SV_StartBug> cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>read<S2SV_blank>%li<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%li,<S2SV_blank>errno:%s.\\\\n\" , <S2SV_EndBug> length , at , errbuff ) ; rc = CL_EREAD ; __lzma_wrap_free ( NULL , buff ) ; goto exit_tmpfile ; } lz . next_in = blockp ; lz . avail_in = CLI_LZMA_HDR_SIZE ; if ( a_hash_ctx != NULL ) xar_hash_update ( a_hash_ctx , blockp , CLI_LZMA_HDR_SIZE , a_hash ) ; lret = cli_LzmaInit ( & lz , 0 ) ; if ( lret != LZMA_RESULT_OK ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_LzmaInit()<S2SV_blank>fails:<S2SV_blank>%i.\\\\n\" , lret ) ; rc = CL_EFORMAT ; __lzma_wrap_free ( NULL , buff ) ; extract_errors ++ ; break ; } at += CLI_LZMA_HDR_SIZE ; in_remaining -= CLI_LZMA_HDR_SIZE ; while ( ( size_t ) at < map -> len && ( unsigned long ) at < offset + hdr . toc_length_compressed + hdr . size + length ) { SizeT avail_in ; SizeT avail_out ; void * next_in ; unsigned long in_consumed ; lz . next_out = buff ; lz . avail_out = CLI_LZMA_OBUF_SIZE ; lz . avail_in = avail_in = MIN ( CLI_LZMA_IBUF_SIZE , in_remaining ) ; lz . next_in = next_in = ( void * ) fmap_need_off_once ( map , at , lz . avail_in ) ; if ( lz . next_in == NULL ) { char errbuff [ 128 ] ; cli_strerror ( errno , errbuff , sizeof ( errbuff ) ) ; cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>read<S2SV_blank>%li<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%li,<S2SV_blank>errno:<S2SV_blank>%s.\\\\n\" , <S2SV_StartBug> length , at , errbuff ) ; <S2SV_EndBug> rc = CL_EREAD ; __lzma_wrap_free ( NULL , buff ) ; cli_LzmaShutdown ( & lz ) ; goto exit_tmpfile ; } lret = cli_LzmaDecode ( & lz ) ; if ( lret != LZMA_RESULT_OK && lret != LZMA_STREAM_END ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_LzmaDecode()<S2SV_blank>fails:<S2SV_blank>%i.\\\\n\" , lret ) ; rc = CL_EFORMAT ; extract_errors ++ ; break ; } in_consumed = avail_in - lz . avail_in ; in_remaining -= in_consumed ; at += in_consumed ; avail_out = CLI_LZMA_OBUF_SIZE - lz . avail_out ; if ( avail_out == 0 ) cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_LzmaDecode()<S2SV_blank>produces<S2SV_blank>no<S2SV_blank>output<S2SV_blank>for<S2SV_blank>\" \"avail_in<S2SV_blank>%llu,<S2SV_blank>avail_out<S2SV_blank>%llu.\\\\n\" , ( long long unsigned ) avail_in , ( long long unsigned ) avail_out ) ; if ( a_hash_ctx != NULL ) xar_hash_update ( a_hash_ctx , next_in , in_consumed , a_hash ) ; if ( e_hash_ctx != NULL ) xar_hash_update ( e_hash_ctx , buff , avail_out , e_hash ) ; if ( cli_writen ( fd , buff , avail_out ) < 0 ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_writen<S2SV_blank>error<S2SV_blank>writing<S2SV_blank>lzma<S2SV_blank>temp<S2SV_blank>file<S2SV_blank>for<S2SV_blank>%llu<S2SV_blank>bytes.\\\\n\" , ( long long unsigned ) avail_out ) ; __lzma_wrap_free ( NULL , buff ) ; cli_LzmaShutdown ( & lz ) ; rc = CL_EWRITE ; goto exit_tmpfile ; } out_size += avail_out ; if ( cli_checklimits ( \"cli_scanxar\" , ctx , out_size , 0 , 0 ) != CL_CLEAN ) { break ; } if ( lret == LZMA_STREAM_END ) break ; } cli_LzmaShutdown ( & lz ) ; __lzma_wrap_free ( NULL , buff ) ; } break ; case CL_TYPE_ANY : default : case CL_TYPE_BZ : case CL_TYPE_XZ : do_extract_cksum = 0 ; { <S2SV_StartBug> unsigned long write_len ; <S2SV_EndBug> if ( ctx -> engine -> maxfilesize ) <S2SV_StartBug> write_len = MIN ( ( size_t ) ( ctx -> engine -> maxfilesize ) , ( size_t ) length ) ; <S2SV_EndBug> else write_len = length ; <S2SV_StartBug> if ( ! ( blockp = ( void * ) fmap_need_off_once ( map , at , length ) ) ) { <S2SV_EndBug> char errbuff [ 128 ] ; cli_strerror ( errno , errbuff , sizeof ( errbuff ) ) ; <S2SV_StartBug> cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>read<S2SV_blank>%li<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%li,<S2SV_blank>errno:%s.\\\\n\" , <S2SV_EndBug> length , at , errbuff ) ; rc = CL_EREAD ; goto exit_tmpfile ; } if ( a_hash_ctx != NULL ) <S2SV_StartBug> xar_hash_update ( a_hash_ctx , blockp , length , a_hash ) ; <S2SV_EndBug> <S2SV_StartBug> if ( cli_writen ( fd , blockp , write_len ) < 0 ) { <S2SV_EndBug> <S2SV_StartBug> cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_writen<S2SV_blank>error<S2SV_blank>%li<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%li.\\\\n\" , length , at ) ; <S2SV_EndBug> rc = CL_EWRITE ; goto exit_tmpfile ; } } } if ( rc == CL_SUCCESS ) { if ( a_hash_ctx != NULL ) { xar_hash_final ( a_hash_ctx , result , a_hash ) ; a_hash_ctx = NULL ; } else { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>archived-checksum<S2SV_blank>missing.\\\\n\" ) ; cksum_fails ++ ; } if ( a_cksum != NULL ) { expected = cli_hex2str ( ( char * ) a_cksum ) ; if ( xar_hash_check ( a_hash , result , expected ) != 0 ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>archived-checksum<S2SV_blank>mismatch.\\\\n\" ) ; cksum_fails ++ ; } else { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>archived-checksum<S2SV_blank>matched.\\\\n\" ) ; } free ( expected ) ; } if ( e_hash_ctx != NULL ) { xar_hash_final ( e_hash_ctx , result , e_hash ) ; e_hash_ctx = NULL ; } else { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>extracted-checksum(unarchived-checksum)<S2SV_blank>missing.\\\\n\" ) ; cksum_fails ++ ; } if ( e_cksum != NULL ) { if ( do_extract_cksum ) { expected = cli_hex2str ( ( char * ) e_cksum ) ; if ( xar_hash_check ( e_hash , result , expected ) != 0 ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>extracted-checksum<S2SV_blank>mismatch.\\\\n\" ) ; cksum_fails ++ ; } else { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>extracted-checksum<S2SV_blank>matched.\\\\n\" ) ; } free ( expected ) ; } } rc = cli_magic_scandesc ( fd , ctx ) ; if ( rc != CL_SUCCESS ) { if ( rc == CL_VIRUS ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Infected<S2SV_blank>with<S2SV_blank>%s\\\\n\" , cli_get_last_virus ( ctx ) ) ; if ( ! SCAN_ALL ) goto exit_tmpfile ; } else if ( rc != CL_BREAK ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_magic_scandesc<S2SV_blank>error<S2SV_blank>%i\\\\n\" , rc ) ; goto exit_tmpfile ; } } } if ( a_cksum != NULL ) { xmlFree ( a_cksum ) ; a_cksum = NULL ; } if ( e_cksum != NULL ) { xmlFree ( e_cksum ) ; e_cksum = NULL ; } } exit_tmpfile : xar_cleanup_temp_file ( ctx , fd , tmpname ) ; if ( a_hash_ctx != NULL ) xar_hash_final ( a_hash_ctx , result , a_hash ) ; if ( e_hash_ctx != NULL ) xar_hash_final ( e_hash_ctx , result , e_hash ) ; exit_reader : if ( a_cksum != NULL ) xmlFree ( a_cksum ) ; if ( e_cksum != NULL ) xmlFree ( e_cksum ) ; xmlTextReaderClose ( reader ) ; xmlFreeTextReader ( reader ) ; exit_toc : free ( toc ) ; if ( rc == CL_BREAK ) rc = CL_SUCCESS ; # else cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>can\\'t<S2SV_blank>scan<S2SV_blank>xar<S2SV_blank>files,<S2SV_blank>need<S2SV_blank>libxml2.\\\\n\" ) ; # endif if ( cksum_fails + extract_errors != 0 ) { <S2SV_StartBug> cli_warnmsg ( \"cli_scanxar:<S2SV_blank>%u<S2SV_blank>checksum<S2SV_blank>errors<S2SV_blank>and<S2SV_blank>%u<S2SV_blank>extraction<S2SV_blank>errors,<S2SV_blank>use<S2SV_blank>--debug<S2SV_blank>for<S2SV_blank>more<S2SV_blank>info.\\\\n\" , <S2SV_EndBug> cksum_fails , extract_errors ) ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> fmap ; size_t <S2SV_ModEnd> length , offset <S2SV_ModStart> ; goto exit_toc ; } if ( hdr . toc_length_decompressed != strm . total_out ) { cli_dbgmsg ( \"TOC<S2SV_blank>decompress<S2SV_blank>length<S2SV_blank>%\" PRIu64 \"<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>amount<S2SV_blank>decompressed<S2SV_blank>%lu\\\\n\" , hdr . toc_length_decompressed , strm . total_out ) ; toc [ strm . total_out ] = '\\\\0' ; hdr . toc_length_decompressed = strm . total_out <S2SV_ModStart> } cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>decompress<S2SV_blank>into<S2SV_blank>temp<S2SV_blank>file:\\\\n%s,<S2SV_blank>size<S2SV_blank>%zu,\\\\n\" \"from<S2SV_blank>xar<S2SV_blank>heap<S2SV_blank>offset<S2SV_blank>%zu<S2SV_blank>length<S2SV_blank>%zu\\\\n\" <S2SV_ModEnd> , tmpname , <S2SV_ModStart> long in_remaining = MIN ( length , map -> len - at ) <S2SV_ModEnd> ; unsigned long <S2SV_ModStart> ; int lret ; if ( length > in_remaining ) length = in_remaining <S2SV_ModStart> ; cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>read<S2SV_blank>%i<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%li,<S2SV_blank>errno:%s.\\\\n\" , CLI_LZMA_HDR_SIZE <S2SV_ModEnd> , at , <S2SV_ModStart> ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>read<S2SV_blank>%li<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%li,<S2SV_blank>errno:<S2SV_blank>%s.\\\\n\" , lz . avail_in <S2SV_ModEnd> , at , <S2SV_ModStart> 0 ; { size_t writelen = MIN ( map -> len - at , length ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> maxfilesize ) writelen <S2SV_ModEnd> = MIN ( <S2SV_ModStart> maxfilesize ) , writelen ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> , at , writelen <S2SV_ModEnd> ) ) ) <S2SV_ModStart> ; cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>Can\\'t<S2SV_blank>read<S2SV_blank>%zu<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%zu,<S2SV_blank>errno:%s.\\\\n\" , writelen <S2SV_ModEnd> , at , <S2SV_ModStart> , blockp , writelen <S2SV_ModEnd> , a_hash ) <S2SV_ModStart> , blockp , writelen <S2SV_ModEnd> ) < 0 <S2SV_ModStart> { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>cli_writen<S2SV_blank>error<S2SV_blank>%zu<S2SV_blank>bytes<S2SV_blank>@<S2SV_blank>%li.\\\\n\" , writelen <S2SV_ModEnd> , at ) <S2SV_ModStart> 0 ) { cli_dbgmsg ( \"cli_scanxar:<S2SV_blank>%u<S2SV_blank>checksum<S2SV_blank>errors<S2SV_blank>and<S2SV_blank>%u<S2SV_blank>extraction<S2SV_blank>errors.\\\\n\" <S2SV_ModEnd> , cksum_fails ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13018\n\n```\nCWE-125 void pgm_print ( netdissect_options * ndo , register const u_char * bp , register u_int length , register const u_char * bp2 ) { register const struct pgm_header * pgm ; register const struct ip * ip ; register char ch ; uint16_t sport , dport ; u_int nla_afnum ; char nla_buf [ INET6_ADDRSTRLEN ] ; register const struct ip6_hdr * ip6 ; uint8_t opt_type , opt_len ; uint32_t seq , opts_len , len , offset ; pgm = ( const struct pgm_header * ) bp ; ip = ( const struct ip * ) bp2 ; if ( IP_V ( ip ) == 6 ) ip6 = ( const struct ip6_hdr * ) bp2 ; else ip6 = NULL ; ch = '\\\\0' ; if ( ! ND_TTEST ( pgm -> pgm_dport ) ) { if ( ip6 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) ) ) ; return ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ipaddr_string ( ndo , & ip -> ip_src ) , ipaddr_string ( ndo , & ip -> ip_dst ) ) ) ; return ; } } sport = EXTRACT_16BITS ( & pgm -> pgm_sport ) ; dport = EXTRACT_16BITS ( & pgm -> pgm_dport ) ; if ( ip6 ) { if ( ip6 -> ip6_nxt == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , tcpport_string ( ndo , sport ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } else { if ( ip -> ip_p == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ipaddr_string ( ndo , & ip -> ip_src ) , tcpport_string ( ndo , sport ) , ipaddr_string ( ndo , & ip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } ND_TCHECK ( * pgm ) ; ND_PRINT ( ( ndo , \"PGM,<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ) ; if ( ! ndo -> ndo_vflag ) return ; ND_PRINT ( ( ndo , \"<S2SV_blank>0x%02x%02x%02x%02x%02x%02x<S2SV_blank>\" , pgm -> pgm_gsid [ 0 ] , pgm -> pgm_gsid [ 1 ] , pgm -> pgm_gsid [ 2 ] , pgm -> pgm_gsid [ 3 ] , pgm -> pgm_gsid [ 4 ] , pgm -> pgm_gsid [ 5 ] ) ) ; switch ( pgm -> pgm_type ) { case PGM_SPM : { const struct pgm_spm * spm ; spm = ( const struct pgm_spm * ) ( pgm + 1 ) ; ND_TCHECK ( * spm ) ; bp = ( const u_char * ) ( spm + 1 ) ; switch ( EXTRACT_16BITS ( & spm -> pgms_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"SPM<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>lead<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s\" , EXTRACT_32BITS ( & spm -> pgms_seq ) , EXTRACT_32BITS ( & spm -> pgms_trailseq ) , EXTRACT_32BITS ( & spm -> pgms_leadseq ) , nla_buf ) ) ; break ; } case PGM_POLL : { const struct pgm_poll * poll_msg ; poll_msg = ( const struct pgm_poll * ) ( pgm + 1 ) ; ND_TCHECK ( * poll_msg ) ; ND_PRINT ( ( ndo , \"POLL<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u\" , EXTRACT_32BITS ( & poll_msg -> pgmp_seq ) , EXTRACT_16BITS ( & poll_msg -> pgmp_round ) ) ) ; bp = ( const u_char * ) ( poll_msg + 1 ) ; break ; } case PGM_POLR : { const struct pgm_polr * polr ; uint32_t ivl , rnd , mask ; polr = ( const struct pgm_polr * ) ( pgm + 1 ) ; ND_TCHECK ( * polr ) ; bp = ( const u_char * ) ( polr + 1 ) ; switch ( EXTRACT_16BITS ( & polr -> pgmp_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; ivl = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; rnd = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; mask = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"POLR<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>rnd<S2SV_blank>0x%08x<S2SV_blank>\" \"mask<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & polr -> pgmp_seq ) , EXTRACT_16BITS ( & polr -> pgmp_round ) , nla_buf , ivl , rnd , mask ) ) ; break ; } case PGM_ODATA : { const struct pgm_data * odata ; odata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * odata ) ; ND_PRINT ( ( ndo , \"ODATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & odata -> pgmd_trailseq ) , EXTRACT_32BITS ( & odata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( odata + 1 ) ; break ; } case PGM_RDATA : { const struct pgm_data * rdata ; rdata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * rdata ) ; ND_PRINT ( ( ndo , \"RDATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & rdata -> pgmd_trailseq ) , EXTRACT_32BITS ( & rdata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( rdata + 1 ) ; break ; } case PGM_NAK : case PGM_NULLNAK : case PGM_NCF : { const struct pgm_nak * nak ; char source_buf [ INET6_ADDRSTRLEN ] , group_buf [ INET6_ADDRSTRLEN ] ; nak = ( const struct pgm_nak * ) ( pgm + 1 ) ; ND_TCHECK ( * nak ) ; bp = ( const u_char * ) ( nak + 1 ) ; switch ( EXTRACT_16BITS ( & nak -> pgmn_source_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( EXTRACT_16BITS ( bp ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } switch ( pgm -> pgm_type ) { case PGM_NAK : ND_PRINT ( ( ndo , \"NAK<S2SV_blank>\" ) ) ; break ; case PGM_NULLNAK : ND_PRINT ( ( ndo , \"NNAK<S2SV_blank>\" ) ) ; break ; case PGM_NCF : ND_PRINT ( ( ndo , \"NCF<S2SV_blank>\" ) ) ; break ; default : break ; } ND_PRINT ( ( ndo , \"(%s<S2SV_blank>-><S2SV_blank>%s),<S2SV_blank>seq<S2SV_blank>%u\" , source_buf , group_buf , EXTRACT_32BITS ( & nak -> pgmn_seq ) ) ) ; break ; } case PGM_ACK : { const struct pgm_ack * ack ; ack = ( const struct pgm_ack * ) ( pgm + 1 ) ; ND_TCHECK ( * ack ) ; ND_PRINT ( ( ndo , \"ACK<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & ack -> pgma_rx_max_seq ) ) ) ; bp = ( const u_char * ) ( ack + 1 ) ; break ; } case PGM_SPMR : ND_PRINT ( ( ndo , \"SPMR\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"UNKNOWN<S2SV_blank>type<S2SV_blank>0x%02x\" , pgm -> pgm_type ) ) ; break ; } if ( pgm -> pgm_options & PGM_OPT_BIT_PRESENT ) { if ( ! ND_TTEST2 ( * bp , PGM_MIN_OPT_LEN ) ) { ND_PRINT ( ( ndo , \"[|OPT]\" ) ) ; return ; } opt_type = * bp ++ ; if ( ( opt_type & PGM_OPT_MASK ) != PGM_OPT_LENGTH ) { ND_PRINT ( ( ndo , \"[First<S2SV_blank>option<S2SV_blank>bad,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>PGM_OPT_LENGTH,<S2SV_blank>is<S2SV_blank>%u]\" , opt_type & PGM_OPT_MASK ) ) ; return ; } opt_len = * bp ++ ; if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } opts_len = EXTRACT_16BITS ( bp ) ; if ( opts_len < 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>4]\" , opts_len ) ) ; return ; } bp += sizeof ( uint16_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>%d\" , opts_len ) ) ; opts_len -= 4 ; while ( opts_len ) { if ( opts_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } <S2SV_StartBug> opt_type = * bp ++ ; <S2SV_EndBug> opt_len = * bp ++ ; if ( opt_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_MIN_OPT_LEN ) ) ; break ; } if ( opts_len < opt_len ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } if ( ! ND_TTEST2 ( * bp , opt_len - 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; } switch ( opt_type & PGM_OPT_MASK ) { case PGM_OPT_LENGTH : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>(extra?)<S2SV_blank>%d\" , EXTRACT_16BITS ( bp ) ) ) ; bp += sizeof ( uint16_t ) ; opts_len -= 4 ; break ; case PGM_OPT_FRAGMENT : if ( opt_len != 16 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FRAGMENT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>16]\" , opt_len ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>FRAG<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>off<S2SV_blank>%u<S2SV_blank>len<S2SV_blank>%u\" , seq , offset , len ) ) ; opts_len -= 16 ; break ; case PGM_OPT_NAK_LIST : bp += 2 ; opt_len -= sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>NAK<S2SV_blank>LIST\" ) ) ; while ( opt_len ) { if ( opt_len < sizeof ( uint32_t ) ) { ND_PRINT ( ( ndo , \"[Option<S2SV_blank>length<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4]\" ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( bp ) ) ) ; bp += sizeof ( uint32_t ) ; opt_len -= sizeof ( uint32_t ) ; opts_len -= sizeof ( uint32_t ) ; } break ; case PGM_OPT_JOIN : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_JOIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>JOIN<S2SV_blank>%u\" , seq ) ) ; opts_len -= 8 ; break ; case PGM_OPT_NAK_BO_IVL : if ( opt_len != 12 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_IVL<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12]\" , opt_len ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>ivlseq<S2SV_blank>%u\" , offset , seq ) ) ; opts_len -= 12 ; break ; case PGM_OPT_NAK_BO_RNG : if ( opt_len != 12 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_RNG<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12]\" , opt_len ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>max<S2SV_blank>%u<S2SV_blank>min<S2SV_blank>%u\" , offset , seq ) ) ; opts_len -= 12 ; break ; case PGM_OPT_REDIRECT : bp += 2 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != 4 + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= 4 + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != 4 + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= 4 + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>REDIRECT<S2SV_blank>%s\" , nla_buf ) ) ; break ; case PGM_OPT_PARITY_PRM : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_PRM<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>MAXTGS<S2SV_blank>%u\" , len ) ) ; opts_len -= 8 ; break ; case PGM_OPT_PARITY_GRP : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_GRP<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>GROUP<S2SV_blank>%u\" , seq ) ) ; opts_len -= 8 ; break ; case PGM_OPT_CURR_TGSIZE : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CURR_TGSIZE<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>ATGS<S2SV_blank>%u\" , len ) ) ; opts_len -= 8 ; break ; case PGM_OPT_NBR_UNREACH : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NBR_UNREACH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NBR_UNREACH\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_PATH_NLA : ND_PRINT ( ( ndo , \"<S2SV_blank>PATH_NLA<S2SV_blank>[%d]\" , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_SYN : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_SYN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>SYN\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_FIN : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FIN\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_RST : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_RST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>RST\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_CR : ND_PRINT ( ( ndo , \"<S2SV_blank>CR\" ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_CRQST : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CRQST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>CRQST\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_PGMCC_DATA : bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != 12 + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= 12 + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != 12 + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= 12 + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>DATA<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; case PGM_OPT_PGMCC_FEEDBACK : bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != 12 + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= 12 + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != 12 + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= 12 + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>FEEDBACK<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>OPT_%02X<S2SV_blank>[%d]<S2SV_blank>\" , opt_type , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; } if ( opt_type & PGM_OPT_END ) break ; } } ND_PRINT ( ( ndo , \"<S2SV_blank>[%u]\" , length ) ) ; if ( ndo -> ndo_packettype == PT_PGM_ZMTP1 && ( pgm -> pgm_type == PGM_ODATA || pgm -> pgm_type == PGM_RDATA ) ) zmtp1_print_datagram ( ndo , bp , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|pgm]\" ) ) ; if ( ch != '\\\\0' ) ND_PRINT ( ( ndo , \">\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } if ( ! ND_TTEST2 ( * bp , 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2548\n\n```\nCWE-20 static int _snd_timer_stop ( struct snd_timer_instance * timeri , int keep_flag , int event ) { struct snd_timer * timer ; unsigned long flags ; if ( snd_BUG_ON ( ! timeri ) ) return - ENXIO ; if ( timeri -> flags & SNDRV_TIMER_IFLG_SLAVE ) { if ( ! keep_flag ) { spin_lock_irqsave ( & slave_active_lock , flags ) ; timeri -> flags &= ~ SNDRV_TIMER_IFLG_RUNNING ; <S2SV_StartBug> spin_unlock_irqrestore ( & slave_active_lock , flags ) ; <S2SV_EndBug> } goto __end ; } timer = timeri -> timer ; if ( ! timer ) return - EINVAL ; spin_lock_irqsave ( & timer -> lock , flags ) ; list_del_init ( & timeri -> ack_list ) ; list_del_init ( & timeri -> active_list ) ; if ( ( timeri -> flags & SNDRV_TIMER_IFLG_RUNNING ) && ! ( -- timer -> running ) ) { timer -> hw . stop ( timer ) ; if ( timer -> flags & SNDRV_TIMER_FLG_RESCHED ) { timer -> flags &= ~ SNDRV_TIMER_FLG_RESCHED ; snd_timer_reschedule ( timer , 0 ) ; if ( timer -> flags & SNDRV_TIMER_FLG_CHANGE ) { timer -> flags &= ~ SNDRV_TIMER_FLG_CHANGE ; timer -> hw . start ( timer ) ; } } } if ( ! keep_flag ) timeri -> flags &= ~ ( SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START ) ; spin_unlock_irqrestore ( & timer -> lock , flags ) ; __end : if ( event != SNDRV_TIMER_EVENT_RESOLUTION ) snd_timer_notify1 ( timeri , event ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ~ SNDRV_TIMER_IFLG_RUNNING ; list_del_init ( & timeri -> ack_list ) ; list_del_init ( & timeri -> active_list ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int pgx_validate ( jas_stream_t * in ) { <S2SV_StartBug> uchar buf [ PGX_MAGICLEN ] ; <S2SV_EndBug> uint_fast32_t magic ; int i ; int n ; assert ( JAS_STREAM_MAXPUTBACK >= PGX_MAGICLEN ) ; if ( ( n = jas_stream_read ( in , buf , PGX_MAGICLEN ) ) < 0 ) { return - 1 ; } for ( i = n - 1 ; i >= 0 ; -- i ) { if ( jas_stream_ungetc ( in , buf [ i ] ) == EOF ) { return - 1 ; } } if ( n < PGX_MAGICLEN ) { return - 1 ; } magic = ( buf [ 0 ] << 8 ) | buf [ 1 ] ; if ( magic != PGX_MAGIC ) { return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in ) { jas_uchar <S2SV_ModEnd> buf [ PGX_MAGICLEN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14173\n\n```\nCWE-190 static Image * ReadTXTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char colorspace [ MaxTextExtent ] , text [ MaxTextExtent ] ; Image * image ; IndexPacket * indexes ; long x_offset , y_offset ; MagickBooleanType status ; MagickPixelPacket pixel ; QuantumAny range ; register ssize_t i , x ; register PixelPacket * q ; ssize_t count , type , y ; unsigned long depth , height , max_value , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( text , 0 , sizeof ( text ) ) ; ( void ) ReadBlobString ( image , text ) ; if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { width = 0 ; height = 0 ; max_value = 0 ; * colorspace = '\\\\0' ; count = ( ssize_t ) sscanf ( text + 32 , \"%lu,%lu,%lu,%s\" , & width , & height , & max_value , colorspace ) ; if ( ( count != 4 ) || ( width == 0 ) || ( height == 0 ) || ( max_value == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = width ; image -> rows = height ; <S2SV_StartBug> for ( depth = 1 ; ( GetQuantumRange ( depth ) + 1 ) < max_value ; depth ++ ) <S2SV_EndBug> <S2SV_StartBug> if ( depth >= 64 ) <S2SV_EndBug> break ; image -> depth = depth ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } LocaleLower ( colorspace ) ; i = ( ssize_t ) strlen ( colorspace ) - 1 ; image -> matte = MagickFalse ; if ( ( i > 0 ) && ( colorspace [ i ] == 'a' ) ) { colorspace [ i ] = '\\\\0' ; image -> matte = MagickTrue ; } type = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , colorspace ) ; if ( type < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> colorspace = ( ColorspaceType ) type ; ( void ) ResetMagickMemory ( & pixel , 0 , sizeof ( pixel ) ) ; ( void ) SetImageBackgroundColor ( image ) ; range = GetQuantumRange ( image -> depth ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { double blue , green , index , opacity , red ; red = 0.0 ; green = 0.0 ; blue = 0.0 ; index = 0.0 ; opacity = 0.0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( ReadBlobString ( image , text ) == ( char * ) NULL ) break ; switch ( image -> colorspace ) { case GRAYColorspace : { if ( image -> matte != MagickFalse ) { ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & opacity ) ; green = red ; blue = red ; break ; } ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]\" , & x_offset , & y_offset , & red ) ; green = red ; blue = red ; break ; } case CMYKColorspace : { if ( image -> matte != MagickFalse ) { ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & index , & opacity ) ; break ; } ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & index ) ; break ; } default : { if ( image -> matte != MagickFalse ) { ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & opacity ) ; break ; } ( void ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue ) ; break ; } } if ( strchr ( text , '%' ) != ( char * ) NULL ) { red *= 0.01 * range ; green *= 0.01 * range ; blue *= 0.01 * range ; index *= 0.01 * range ; opacity *= 0.01 * range ; } if ( image -> colorspace == LabColorspace ) { green += ( range + 1 ) / 2.0 ; blue += ( range + 1 ) / 2.0 ; } pixel . red = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( red + 0.5 ) , range ) ; pixel . green = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( green + 0.5 ) , range ) ; pixel . blue = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( blue + 0.5 ) , range ) ; pixel . index = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( index + 0.5 ) , range ) ; pixel . opacity = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( opacity + 0.5 ) , range ) ; q = GetAuthenticPixels ( image , ( ssize_t ) x_offset , ( ssize_t ) y_offset , 1 , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) continue ; SetPixelRed ( q , pixel . red ) ; SetPixelGreen ( q , pixel . green ) ; SetPixelBlue ( q , pixel . blue ) ; if ( image -> colorspace == CMYKColorspace ) { indexes = GetAuthenticIndexQueue ( image ) ; SetPixelIndex ( indexes , pixel . index ) ; } if ( image -> matte != MagickFalse ) SetPixelAlpha ( q , pixel . opacity ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } ( void ) ReadBlobString ( image , text ) ; if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = height ; if ( ( max_value == 0 ) || ( max_value > 4294967295 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; <S2SV_ModStart> depth ++ ) <S2SV_ModEnd> ; image ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int set_vt_partitioning ( VP9_COMP * cpi , <S2SV_StartBug> void * data , <S2SV_EndBug> <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> BLOCK_SIZE bsize , int mi_row , int mi_col , <S2SV_StartBug> int mi_size ) { <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; variance_node vt ; const int block_width = num_8x8_blocks_wide_lookup [ bsize ] ; const int block_height = num_8x8_blocks_high_lookup [ bsize ] ; <S2SV_StartBug> const int64_t threshold_multiplier = 25 ; <S2SV_EndBug> int64_t threshold = threshold_multiplier * cpi -> common . base_qindex ; assert ( block_height == block_width ) ; tree_to_node ( data , bsize , & vt ) ; <S2SV_StartBug> if ( mi_col + block_width / 2 < cm -> mi_cols && <S2SV_EndBug> mi_row + block_height / 2 < cm -> mi_rows && vt . part_variances -> none . variance < threshold ) { <S2SV_StartBug> set_block_size ( cpi , tile , mi_row , mi_col , bsize ) ; <S2SV_EndBug> return 1 ; } if ( mi_row + block_height / 2 < cm -> mi_rows && <S2SV_StartBug> vt . part_variances -> vert [ 0 ] . variance < threshold && <S2SV_EndBug> vt . part_variances -> vert [ 1 ] . variance < threshold ) { BLOCK_SIZE subsize = get_subsize ( bsize , PARTITION_VERT ) ; <S2SV_StartBug> set_block_size ( cpi , tile , mi_row , mi_col , subsize ) ; <S2SV_EndBug> <S2SV_StartBug> set_block_size ( cpi , tile , mi_row , mi_col + block_width / 2 , subsize ) ; <S2SV_EndBug> return 1 ; } <S2SV_StartBug> if ( mi_col + block_width / 2 < cm -> mi_cols && <S2SV_EndBug> vt . part_variances -> horz [ 0 ] . variance < threshold && vt . part_variances -> horz [ 1 ] . variance < threshold ) { BLOCK_SIZE subsize = get_subsize ( bsize , PARTITION_HORZ ) ; <S2SV_StartBug> set_block_size ( cpi , tile , mi_row , mi_col , subsize ) ; <S2SV_EndBug> <S2SV_StartBug> set_block_size ( cpi , tile , mi_row + block_height / 2 , mi_col , subsize ) ; <S2SV_EndBug> return 1 ; } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , MACROBLOCK * const x , MACROBLOCKD * const xd , <S2SV_ModStart> * data , <S2SV_ModEnd> BLOCK_SIZE bsize , <S2SV_ModStart> int mi_col , int64_t threshold , BLOCK_SIZE bsize_min , int force_split <S2SV_ModEnd> ) { VP9_COMMON <S2SV_ModStart> ] ; const int low_res = ( cm -> width <= 352 && cm -> height <= 288 ) <S2SV_ModEnd> ; assert ( <S2SV_ModStart> ; if ( force_split == 1 ) return 0 ; if ( bsize == bsize_min ) { if ( low_res || cm -> frame_type == KEY_FRAME ) get_variance ( & vt . part_variances -> none ) ; if ( <S2SV_ModStart> ( cpi , x , xd , mi_row , mi_col , bsize ) ; return 1 ; } return 0 ; } else if ( bsize > bsize_min ) { if ( low_res || cm -> frame_type == KEY_FRAME ) get_variance ( & vt . part_variances -> none ) ; if ( cm -> frame_type == KEY_FRAME && ( bsize > BLOCK_32X32 || vt . part_variances -> none . variance > ( threshold << 4 ) ) ) { return 0 ; } if ( mi_col + block_width / 2 < cm -> mi_cols && <S2SV_ModEnd> mi_row + block_height <S2SV_ModStart> . part_variances -> none <S2SV_ModEnd> . variance < <S2SV_ModStart> variance < threshold ) { set_block_size ( cpi , x , xd , mi_row , mi_col , bsize ) ; return 1 ; } if ( mi_row + block_height / 2 < cm -> mi_rows <S2SV_ModEnd> ) { BLOCK_SIZE <S2SV_ModStart> PARTITION_VERT ) ; get_variance ( & vt . part_variances -> vert [ 0 ] ) ; get_variance ( & vt . part_variances -> vert [ 1 ] ) ; if ( vt . part_variances -> vert [ 0 ] . variance < threshold && vt . part_variances -> vert [ 1 ] . variance < threshold && get_plane_block_size ( subsize , & xd -> plane [ 1 ] ) < BLOCK_INVALID ) { <S2SV_ModStart> ( cpi , x , xd <S2SV_ModEnd> , mi_row , <S2SV_ModStart> ( cpi , x , xd <S2SV_ModEnd> , mi_row , <S2SV_ModStart> 1 ; } } <S2SV_ModStart> cm -> mi_cols <S2SV_ModEnd> ) { BLOCK_SIZE <S2SV_ModStart> PARTITION_HORZ ) ; get_variance ( & vt . part_variances -> horz [ 0 ] ) ; get_variance ( & vt . part_variances -> horz [ 1 ] ) ; if ( vt . part_variances -> horz [ 0 ] . variance < threshold && vt . part_variances -> horz [ 1 ] . variance < threshold && get_plane_block_size ( subsize , & xd -> plane [ 1 ] ) < BLOCK_INVALID ) { <S2SV_ModStart> ( cpi , x , xd <S2SV_ModEnd> , mi_row , <S2SV_ModStart> ( cpi , x , xd <S2SV_ModEnd> , mi_row + <S2SV_ModStart> 1 ; } } return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 <S2SV_StartBug> static void perf_event_output ( struct perf_event * event , int nmi , <S2SV_EndBug> struct perf_sample_data * data , struct pt_regs * regs ) { struct perf_output_handle handle ; struct perf_event_header header ; rcu_read_lock ( ) ; perf_prepare_sample ( & header , data , event , regs ) ; <S2SV_StartBug> if ( perf_output_begin ( & handle , event , header . size , nmi , 1 ) ) <S2SV_EndBug> goto exit ; perf_output_sample ( & handle , & header , data , event ) ; perf_output_end ( & handle ) ; exit : rcu_read_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event * event <S2SV_ModEnd> , struct perf_sample_data <S2SV_ModStart> . size , <S2SV_ModEnd> 1 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10662\n\n```\nCWE-000 static int sanity_check_raw_super ( struct f2fs_sb_info * sbi , struct buffer_head * bh ) { struct f2fs_super_block * raw_super = ( struct f2fs_super_block * ) ( bh -> b_data + F2FS_SUPER_OFFSET ) ; struct super_block * sb = sbi -> sb ; unsigned int blocksize ; if ( F2FS_SUPER_MAGIC != le32_to_cpu ( raw_super -> magic ) ) { f2fs_msg ( sb , KERN_INFO , \"Magic<S2SV_blank>Mismatch,<S2SV_blank>valid(0x%x)<S2SV_blank>-<S2SV_blank>read(0x%x)\" , F2FS_SUPER_MAGIC , le32_to_cpu ( raw_super -> magic ) ) ; return 1 ; } if ( F2FS_BLKSIZE != PAGE_SIZE ) { f2fs_msg ( sb , KERN_INFO , \"Invalid<S2SV_blank>page_cache_size<S2SV_blank>(%lu),<S2SV_blank>supports<S2SV_blank>only<S2SV_blank>4KB\\\\n\" , PAGE_SIZE ) ; return 1 ; } blocksize = 1 << le32_to_cpu ( raw_super -> log_blocksize ) ; if ( blocksize != F2FS_BLKSIZE ) { f2fs_msg ( sb , KERN_INFO , \"Invalid<S2SV_blank>blocksize<S2SV_blank>(%u),<S2SV_blank>supports<S2SV_blank>only<S2SV_blank>4KB\\\\n\" , blocksize ) ; return 1 ; } if ( le32_to_cpu ( raw_super -> log_blocks_per_seg ) != 9 ) { f2fs_msg ( sb , KERN_INFO , \"Invalid<S2SV_blank>log<S2SV_blank>blocks<S2SV_blank>per<S2SV_blank>segment<S2SV_blank>(%u)\\\\n\" , le32_to_cpu ( raw_super -> log_blocks_per_seg ) ) ; return 1 ; } if ( le32_to_cpu ( raw_super -> log_sectorsize ) > F2FS_MAX_LOG_SECTOR_SIZE || le32_to_cpu ( raw_super -> log_sectorsize ) < F2FS_MIN_LOG_SECTOR_SIZE ) { f2fs_msg ( sb , KERN_INFO , \"Invalid<S2SV_blank>log<S2SV_blank>sectorsize<S2SV_blank>(%u)\" , le32_to_cpu ( raw_super -> log_sectorsize ) ) ; return 1 ; } if ( le32_to_cpu ( raw_super -> log_sectors_per_block ) + le32_to_cpu ( raw_super -> log_sectorsize ) != F2FS_MAX_LOG_SECTOR_SIZE ) { f2fs_msg ( sb , KERN_INFO , \"Invalid<S2SV_blank>log<S2SV_blank>sectors<S2SV_blank>per<S2SV_blank>block(%u)<S2SV_blank>log<S2SV_blank>sectorsize(%u)\" , le32_to_cpu ( raw_super -> log_sectors_per_block ) , le32_to_cpu ( raw_super -> log_sectorsize ) ) ; return 1 ; } if ( le32_to_cpu ( raw_super -> node_ino ) != 1 || le32_to_cpu ( raw_super -> meta_ino ) != 2 || le32_to_cpu ( raw_super -> root_ino ) != 3 ) { f2fs_msg ( sb , KERN_INFO , \"Invalid<S2SV_blank>Fs<S2SV_blank>Meta<S2SV_blank>Ino:<S2SV_blank>node(%u)<S2SV_blank>meta(%u)<S2SV_blank>root(%u)\" , le32_to_cpu ( raw_super -> node_ino ) , le32_to_cpu ( raw_super -> meta_ino ) , le32_to_cpu ( raw_super -> root_ino ) ) ; return 1 ; } <S2SV_StartBug> if ( sanity_check_area_boundary ( sbi , bh ) ) <S2SV_EndBug> return 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( le32_to_cpu ( raw_super -> segment_count ) > F2FS_MAX_SEGMENT ) { f2fs_msg ( sb , KERN_INFO , \"Invalid<S2SV_blank>segment<S2SV_blank>count<S2SV_blank>(%u)\" , le32_to_cpu ( raw_super -> segment_count ) ) ; return 1 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-476 int fscrypt_setup_filename ( struct inode * dir , const struct qstr * iname , int lookup , struct fscrypt_name * fname ) { int ret = 0 , bigname = 0 ; memset ( fname , 0 , sizeof ( struct fscrypt_name ) ) ; fname -> usr_fname = iname ; if ( ! dir -> i_sb -> s_cop -> is_encrypted ( dir ) || fscrypt_is_dot_dotdot ( iname ) ) { fname -> disk_name . name = ( unsigned char * ) iname -> name ; fname -> disk_name . len = iname -> len ; return 0 ; } <S2SV_StartBug> ret = fscrypt_get_crypt_info ( dir ) ; <S2SV_EndBug> if ( ret && ret != - EOPNOTSUPP ) return ret ; if ( dir -> i_crypt_info ) { ret = fscrypt_fname_alloc_buffer ( dir , iname -> len , & fname -> crypto_buf ) ; if ( ret ) return ret ; ret = fname_encrypt ( dir , iname , & fname -> crypto_buf ) ; if ( ret ) goto errout ; fname -> disk_name . name = fname -> crypto_buf . name ; fname -> disk_name . len = fname -> crypto_buf . len ; return 0 ; } if ( ! lookup ) return - ENOKEY ; if ( iname -> name [ 0 ] == '_' ) bigname = 1 ; if ( ( bigname && ( iname -> len != 33 ) ) || ( ! bigname && ( iname -> len > 43 ) ) ) return - ENOENT ; fname -> crypto_buf . name = kmalloc ( 32 , GFP_KERNEL ) ; if ( fname -> crypto_buf . name == NULL ) return - ENOMEM ; ret = digest_decode ( iname -> name + bigname , iname -> len - bigname , fname -> crypto_buf . name ) ; if ( ret < 0 ) { ret = - ENOENT ; goto errout ; } fname -> crypto_buf . len = ret ; if ( bigname ) { memcpy ( & fname -> hash , fname -> crypto_buf . name , 4 ) ; memcpy ( & fname -> minor_hash , fname -> crypto_buf . name + 4 , 4 ) ; } else { fname -> disk_name . name = fname -> crypto_buf . name ; fname -> disk_name . len = fname -> crypto_buf . len ; } return 0 ; errout : fscrypt_fname_free_buffer ( & fname -> crypto_buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } ret = fscrypt_get_encryption_info <S2SV_ModEnd> ( dir )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int jpg_dec_parseopts ( char * optstr , jpg_dec_importopts_t * opts ) { jas_tvparser_t * tvp ; <S2SV_StartBug> opts -> max_size = 0 ; <S2SV_EndBug> if ( ! ( tvp = jas_tvparser_create ( optstr ? optstr : \"\" ) ) ) { return - 1 ; } while ( ! jas_tvparser_next ( tvp ) ) { switch ( jas_taginfo_nonull ( jas_taginfos_lookup ( decopts , jas_tvparser_gettag ( tvp ) ) ) -> id ) { case OPT_MAXSIZE : <S2SV_StartBug> opts -> max_size = atoi ( jas_tvparser_getval ( tvp ) ) ; <S2SV_EndBug> break ; default : jas_eprintf ( \"warning:<S2SV_blank>ignoring<S2SV_blank>invalid<S2SV_blank>option<S2SV_blank>%s\\\\n\" , jas_tvparser_gettag ( tvp ) ) ; break ; } } jas_tvparser_destroy ( tvp ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; opts -> max_samples = 64 * JAS_MEBI <S2SV_ModEnd> ; if ( <S2SV_ModStart> : opts -> max_samples <S2SV_ModEnd> = atoi (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 int jas_stream_gobble ( jas_stream_t * stream , int n ) { <S2SV_StartBug> int m ; <S2SV_EndBug> m = n ; for ( m = n ; m > 0 ; -- m ) { if ( jas_stream_getc ( stream ) == EOF ) { return n - m ; } } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int m ; if ( n < 0 ) { jas_deprecated ( \"negative<S2SV_blank>count<S2SV_blank>for<S2SV_blank>jas_stream_gobble\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 static void usage ( const char * prog ) { fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank>[OPTION...]\\\\n\" , prog ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-f,<S2SV_blank>--use-file=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>configuration<S2SV_blank>file\\\\n\" ) ; # if defined _WITH_VRRP_ && defined _WITH_LVS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-P,<S2SV_blank>--vrrp<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Only<S2SV_blank>run<S2SV_blank>with<S2SV_blank>VRRP<S2SV_blank>subsystem\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-C,<S2SV_blank>--check<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Only<S2SV_blank>run<S2SV_blank>with<S2SV_blank>Health-checker<S2SV_blank>subsystem\\\\n\" ) ; # endif # ifdef _WITH_BFD_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-B,<S2SV_blank>--no_bfd<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>run<S2SV_blank>BFD<S2SV_blank>subsystem\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--all<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Force<S2SV_blank>all<S2SV_blank>child<S2SV_blank>processes<S2SV_blank>to<S2SV_blank>run,<S2SV_blank>even<S2SV_blank>if<S2SV_blank>have<S2SV_blank>no<S2SV_blank>configuration\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-l,<S2SV_blank>--log-console<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Log<S2SV_blank>messages<S2SV_blank>to<S2SV_blank>local<S2SV_blank>console\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-D,<S2SV_blank>--log-detail<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Detailed<S2SV_blank>log<S2SV_blank>messages\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-S,<S2SV_blank>--log-facility=[0-7]<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Set<S2SV_blank>syslog<S2SV_blank>facility<S2SV_blank>to<S2SV_blank>LOG_LOCAL[0-7]\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-g,<S2SV_blank>--log-file=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Also<S2SV_blank>log<S2SV_blank>to<S2SV_blank>FILE<S2SV_blank>(default<S2SV_blank>/tmp/keepalived.log)\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--flush-log-file<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flush<S2SV_blank>log<S2SV_blank>file<S2SV_blank>on<S2SV_blank>write\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-G,<S2SV_blank>--no-syslog<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>log<S2SV_blank>via<S2SV_blank>syslog\\\\n\" ) ; <S2SV_StartBug> # ifdef _WITH_VRRP_ <S2SV_EndBug> fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-X,<S2SV_blank>--release-vips<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Drop<S2SV_blank>VIP<S2SV_blank>on<S2SV_blank>transition<S2SV_blank>from<S2SV_blank>signal.\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-V,<S2SV_blank>--dont-release-vrrp<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>remove<S2SV_blank>VRRP<S2SV_blank>VIPs<S2SV_blank>and<S2SV_blank>VROUTEs<S2SV_blank>on<S2SV_blank>daemon<S2SV_blank>stop\\\\n\" ) ; # endif # ifdef _WITH_LVS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-I,<S2SV_blank>--dont-release-ipvs<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>remove<S2SV_blank>IPVS<S2SV_blank>topology<S2SV_blank>on<S2SV_blank>daemon<S2SV_blank>stop\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-R,<S2SV_blank>--dont-respawn<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>respawn<S2SV_blank>child<S2SV_blank>processes\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-n,<S2SV_blank>--dont-fork<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>fork<S2SV_blank>the<S2SV_blank>daemon<S2SV_blank>process\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-d,<S2SV_blank>--dump-conf<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Dump<S2SV_blank>the<S2SV_blank>configuration<S2SV_blank>data\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-p,<S2SV_blank>--pid=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>specified<S2SV_blank>pidfile<S2SV_blank>for<S2SV_blank>parent<S2SV_blank>process\\\\n\" ) ; # ifdef _WITH_VRRP_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-r,<S2SV_blank>--vrrp_pid=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>specified<S2SV_blank>pidfile<S2SV_blank>for<S2SV_blank>VRRP<S2SV_blank>child<S2SV_blank>process\\\\n\" ) ; # endif # ifdef _WITH_LVS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-c,<S2SV_blank>--checkers_pid=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>specified<S2SV_blank>pidfile<S2SV_blank>for<S2SV_blank>checkers<S2SV_blank>child<S2SV_blank>process\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-a,<S2SV_blank>--address-monitoring<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Report<S2SV_blank>all<S2SV_blank>address<S2SV_blank>additions/deletions<S2SV_blank>notified<S2SV_blank>via<S2SV_blank>netlink\\\\n\" ) ; # endif # ifdef _WITH_BFD_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-b,<S2SV_blank>--bfd_pid=FILE<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Use<S2SV_blank>specified<S2SV_blank>pidfile<S2SV_blank>for<S2SV_blank>BFD<S2SV_blank>child<S2SV_blank>process\\\\n\" ) ; # endif # ifdef _WITH_SNMP_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-x,<S2SV_blank>--snmp<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Enable<S2SV_blank>SNMP<S2SV_blank>subsystem\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-A,<S2SV_blank>--snmp-agent-socket=FILE<S2SV_blank>Use<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>socket<S2SV_blank>for<S2SV_blank>master<S2SV_blank>agent\\\\n\" ) ; # endif # if HAVE_DECL_CLONE_NEWNET fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-s,<S2SV_blank>--namespace=NAME<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Run<S2SV_blank>in<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>NAME<S2SV_blank>(overrides<S2SV_blank>config)\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-m,<S2SV_blank>--core-dump<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Produce<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>if<S2SV_blank>terminate<S2SV_blank>abnormally\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-M,<S2SV_blank>--core-dump-pattern=PATN<S2SV_blank>Also<S2SV_blank>set<S2SV_blank>/proc/sys/kernel/core_pattern<S2SV_blank>to<S2SV_blank>PATN<S2SV_blank>(default<S2SV_blank>\\'core\\')\\\\n\" ) ; # ifdef _MEM_CHECK_LOG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-L,<S2SV_blank>--mem-check-log<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Log<S2SV_blank>malloc/frees<S2SV_blank>to<S2SV_blank>syslog\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-i,<S2SV_blank>--config-id<S2SV_blank>id<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Skip<S2SV_blank>any<S2SV_blank>configuration<S2SV_blank>lines<S2SV_blank>beginning<S2SV_blank>\\'@\\'<S2SV_blank>that<S2SV_blank>don\\'t<S2SV_blank>match<S2SV_blank>id\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>or<S2SV_blank>any<S2SV_blank>lines<S2SV_blank>beginning<S2SV_blank>@^<S2SV_blank>that<S2SV_blank>do<S2SV_blank>match.\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>The<S2SV_blank>config-id<S2SV_blank>defaults<S2SV_blank>to<S2SV_blank>the<S2SV_blank>node<S2SV_blank>name<S2SV_blank>if<S2SV_blank>option<S2SV_blank>not<S2SV_blank>used\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--signum=SIGFUNC<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Return<S2SV_blank>signal<S2SV_blank>number<S2SV_blank>for<S2SV_blank>STOP,<S2SV_blank>RELOAD,<S2SV_blank>DATA,<S2SV_blank>STATS\" # ifdef _WITH_JSON_ \",<S2SV_blank>JSON\" # endif \"\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-t,<S2SV_blank>--config-test[=LOG_FILE]<S2SV_blank>Check<S2SV_blank>the<S2SV_blank>configuration<S2SV_blank>for<S2SV_blank>obvious<S2SV_blank>errors,<S2SV_blank>output<S2SV_blank>to\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>stderr<S2SV_blank>by<S2SV_blank>default\\\\n\" ) ; # ifdef _WITH_PERF_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--perf[=PERF_TYPE]<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Collect<S2SV_blank>perf<S2SV_blank>data,<S2SV_blank>PERF_TYPE=all,<S2SV_blank>run(default)<S2SV_blank>or<S2SV_blank>end\\\\n\" ) ; # endif # ifdef WITH_DEBUG_OPTIONS fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--debug[=...]<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Enable<S2SV_blank>debug<S2SV_blank>options.<S2SV_blank>p,<S2SV_blank>b,<S2SV_blank>c,<S2SV_blank>v<S2SV_blank>specify<S2SV_blank>parent,<S2SV_blank>bfd,<S2SV_blank>checker<S2SV_blank>and<S2SV_blank>vrrp<S2SV_blank>processes\\\\n\" ) ; # ifdef _TIMER_CHECK_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>T<S2SV_blank>-<S2SV_blank>timer<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _SMTP_ALERT_DEBUG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>M<S2SV_blank>-<S2SV_blank>email<S2SV_blank>alert<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _EPOLL_DEBUG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>E<S2SV_blank>-<S2SV_blank>epoll<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _EPOLL_THREAD_DUMP_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>D<S2SV_blank>-<S2SV_blank>epoll<S2SV_blank>thread<S2SV_blank>dump<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _VRRP_FD_DEBUG fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>F<S2SV_blank>-<S2SV_blank>vrrp<S2SV_blank>fd<S2SV_blank>dump<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _REGEX_DEBUG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>R<S2SV_blank>-<S2SV_blank>regex<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _WITH_REGEX_TIMERS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>X<S2SV_blank>-<S2SV_blank>regex<S2SV_blank>timers\\\\n\" ) ; # endif # ifdef _TSM_DEBUG_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>S<S2SV_blank>-<S2SV_blank>TSM<S2SV_blank>debug\\\\n\" ) ; # endif # ifdef _NETLINK_TIMERS_ fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>N<S2SV_blank>-<S2SV_blank>netlink<S2SV_blank>timer<S2SV_blank>debug\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Example<S2SV_blank>--debug=TpMEvcp\\\\n\" ) ; # endif fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-v,<S2SV_blank>--version<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Display<S2SV_blank>the<S2SV_blank>version<S2SV_blank>number\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-h,<S2SV_blank>--help<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Display<S2SV_blank>this<S2SV_blank>help<S2SV_blank>message\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"<S2SV_blank><S2SV_blank>-G,<S2SV_blank>--no-syslog<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Don\\'t<S2SV_blank>log<S2SV_blank>via<S2SV_blank>syslog\\\\n\" ) ; fprintf ( stderr , \"<S2SV_blank><S2SV_blank>-u,<S2SV_blank>--umask=MASK<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>umask<S2SV_blank>for<S2SV_blank>file<S2SV_blank>creation<S2SV_blank>(in<S2SV_blank>numeric<S2SV_blank>form)\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7757\n\n```\nCWE-772 int sas_smp_get_phy_events ( struct sas_phy * phy ) { int res ; u8 * req ; u8 * resp ; struct sas_rphy * rphy = dev_to_rphy ( phy -> dev . parent ) ; struct domain_device * dev = sas_find_dev_by_rphy ( rphy ) ; req = alloc_smp_req ( RPEL_REQ_SIZE ) ; if ( ! req ) return - ENOMEM ; resp = alloc_smp_resp ( RPEL_RESP_SIZE ) ; if ( ! resp ) { kfree ( req ) ; return - ENOMEM ; } req [ 1 ] = SMP_REPORT_PHY_ERR_LOG ; req [ 9 ] = phy -> number ; res = smp_execute_task ( dev , req , RPEL_REQ_SIZE , resp , RPEL_RESP_SIZE ) ; if ( ! res ) goto out ; phy -> invalid_dword_count = scsi_to_u32 ( & resp [ 12 ] ) ; phy -> running_disparity_error_count = scsi_to_u32 ( & resp [ 16 ] ) ; phy -> loss_of_dword_sync_count = scsi_to_u32 ( & resp [ 20 ] ) ; phy -> phy_reset_problem_count = scsi_to_u32 ( & resp [ 24 ] ) ; out : <S2SV_StartBug> kfree ( resp ) ; <S2SV_EndBug> return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : kfree ( req ) ; kfree (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4440\n\n```\nCWE-264 static void vmx_refresh_apicv_exec_ctrl ( struct kvm_vcpu * vcpu ) { struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; vmcs_write32 ( PIN_BASED_VM_EXEC_CONTROL , vmx_pin_based_exec_ctrl ( vmx ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( cpu_has_secondary_exec_ctrls ( ) ) { if ( kvm_vcpu_apicv_active ( vcpu ) ) vmcs_set_bits ( SECONDARY_VM_EXEC_CONTROL , SECONDARY_EXEC_APIC_REGISTER_VIRT | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY ) ; else vmcs_clear_bits ( SECONDARY_VM_EXEC_CONTROL , SECONDARY_EXEC_APIC_REGISTER_VIRT | SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY ) ; } if ( cpu_has_vmx_msr_bitmap ( ) ) vmx_set_msr_bitmap ( vcpu ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int calc_pframe_target_size_one_pass_cbr ( const VP9_COMP * cpi ) { <S2SV_StartBug> const VP9_CONFIG * oxcf = & cpi -> oxcf ; <S2SV_EndBug> const RATE_CONTROL * rc = & cpi -> rc ; const SVC * const svc = & cpi -> svc ; <S2SV_StartBug> const int64_t diff = oxcf -> optimal_buffer_level - rc -> buffer_level ; <S2SV_EndBug> <S2SV_StartBug> const int64_t one_pct_bits = 1 + oxcf -> optimal_buffer_level / 100 ; <S2SV_EndBug> <S2SV_StartBug> int min_frame_target = MAX ( rc -> av_per_frame_bandwidth >> 4 , <S2SV_EndBug> FRAME_OVERHEAD_BITS ) ; <S2SV_StartBug> int target = rc -> av_per_frame_bandwidth ; <S2SV_EndBug> <S2SV_StartBug> if ( svc -> number_temporal_layers > 1 && <S2SV_EndBug> oxcf -> end_usage == USAGE_STREAM_FROM_SERVER ) { int current_temporal_layer = svc -> temporal_layer_id ; <S2SV_StartBug> const LAYER_CONTEXT * lc = & svc -> layer_context [ current_temporal_layer ] ; <S2SV_EndBug> target = lc -> avg_frame_size ; min_frame_target = MAX ( lc -> avg_frame_size >> 4 , FRAME_OVERHEAD_BITS ) ; } if ( diff > 0 ) { const int pct_low = ( int ) MIN ( diff / one_pct_bits , oxcf -> under_shoot_pct ) ; target -= ( target * pct_low ) / 200 ; } else if ( diff < 0 ) { const int pct_high = ( int ) MIN ( - diff / one_pct_bits , oxcf -> over_shoot_pct ) ; target += ( target * pct_high ) / 200 ; } <S2SV_StartBug> return MAX ( min_frame_target , target ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { const VP9EncoderConfig <S2SV_ModEnd> * oxcf = <S2SV_ModStart> int64_t diff = rc <S2SV_ModEnd> -> optimal_buffer_level - <S2SV_ModStart> = 1 + rc <S2SV_ModEnd> -> optimal_buffer_level / <S2SV_ModStart> ( rc -> avg_frame_bandwidth <S2SV_ModEnd> >> 4 , <S2SV_ModStart> ; int target ; if ( oxcf -> gf_cbr_boost_pct ) { const int af_ratio_pct = oxcf -> gf_cbr_boost_pct + 100 ; target = cpi -> refresh_golden_frame ? ( rc -> avg_frame_bandwidth * rc -> baseline_gf_interval * af_ratio_pct ) / ( rc -> baseline_gf_interval * 100 + af_ratio_pct - 100 ) : ( rc -> avg_frame_bandwidth * rc -> baseline_gf_interval * 100 ) / ( rc -> baseline_gf_interval * 100 + af_ratio_pct - 100 ) ; } else { target = rc -> avg_frame_bandwidth ; } if ( is_one_pass_cbr_svc ( cpi ) ) { int layer = LAYER_IDS_TO_IDX ( svc -> spatial_layer_id , svc -> temporal_layer_id , <S2SV_ModEnd> svc -> number_temporal_layers <S2SV_ModStart> svc -> number_temporal_layers ) <S2SV_ModEnd> ; const LAYER_CONTEXT <S2SV_ModStart> -> layer_context [ layer <S2SV_ModEnd> ] ; target <S2SV_ModStart> 200 ; } if ( oxcf -> rc_max_inter_bitrate_pct ) { const int max_rate = rc -> avg_frame_bandwidth * oxcf -> rc_max_inter_bitrate_pct / 100 ; target = MIN ( target , max_rate ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16939\n\n```\nCWE-416 static int xfrm_user_rcv_msg ( struct sk_buff * skb , struct nlmsghdr * nlh , struct netlink_ext_ack * extack ) { struct net * net = sock_net ( skb -> sk ) ; struct nlattr * attrs [ XFRMA_MAX + 1 ] ; const struct xfrm_link * link ; int type , err ; # ifdef CONFIG_COMPAT if ( in_compat_syscall ( ) ) return - EOPNOTSUPP ; # endif type = nlh -> nlmsg_type ; if ( type > XFRM_MSG_MAX ) return - EINVAL ; type -= XFRM_MSG_BASE ; link = & xfrm_dispatch [ type ] ; if ( ! netlink_net_capable ( skb , CAP_NET_ADMIN ) ) return - EPERM ; if ( ( type == ( XFRM_MSG_GETSA - XFRM_MSG_BASE ) || type == ( XFRM_MSG_GETPOLICY - XFRM_MSG_BASE ) ) && ( nlh -> nlmsg_flags & NLM_F_DUMP ) ) { if ( link -> dump == NULL ) return - EINVAL ; { struct netlink_dump_control c = { <S2SV_StartBug> . dump = link -> dump , <S2SV_EndBug> . done = link -> done , } ; return netlink_dump_start ( net -> xfrm . nlsk , skb , nlh , & c ) ; } } err = nlmsg_parse ( nlh , xfrm_msg_min [ type ] , attrs , link -> nla_max ? : XFRMA_MAX , link -> nla_pol ? : xfrma_policy , extack ) ; if ( err < 0 ) return err ; if ( link -> doit == NULL ) return - EINVAL ; return link -> doit ( skb , nlh , attrs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = { . start = link -> start , .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1013\n\n```\nCWE-000 static void check_1_6_dummy ( kadm5_principal_ent_t entry , long mask , int n_ks_tuple , krb5_key_salt_tuple * ks_tuple , char * * passptr ) { int i ; char * password = * passptr ; <S2SV_StartBug> if ( ! ( mask & KADM5_ATTRIBUTES ) || <S2SV_EndBug> ! ( entry -> attributes & KRB5_KDB_DISALLOW_ALL_TIX ) ) return ; for ( i = 0 ; ( unsigned char ) password [ i ] == i + 1 ; i ++ ) ; if ( password [ i ] != '\\\\0' || i != 255 ) return ; * passptr = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( password == NULL ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19815\n\n```\nCWE-476 static enum count_type __read_io_type ( struct page * page ) { <S2SV_StartBug> struct address_space * mapping = page -> mapping ; <S2SV_EndBug> if ( mapping ) { struct inode * inode = mapping -> host ; struct f2fs_sb_info * sbi = F2FS_I_SB ( inode ) ; if ( inode -> i_ino == F2FS_META_INO ( sbi ) ) return F2FS_RD_META ; if ( inode -> i_ino == F2FS_NODE_INO ( sbi ) ) return F2FS_RD_NODE ; } return F2FS_RD_DATA ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * mapping = page_file_mapping ( page ) <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0206\n\n```\nCWE-119 static int dtls1_buffer_record ( SSL * s , record_pqueue * queue , unsigned char * priority ) { DTLS1_RECORD_DATA * rdata ; pitem * item ; if ( pqueue_size ( queue -> q ) >= 100 ) return 0 ; rdata = OPENSSL_malloc ( sizeof ( DTLS1_RECORD_DATA ) ) ; item = pitem_new ( priority , rdata ) ; if ( rdata == NULL || item == NULL ) { if ( rdata != NULL ) OPENSSL_free ( rdata ) ; if ( item != NULL ) pitem_free ( item ) ; SSLerr ( SSL_F_DTLS1_BUFFER_RECORD , ERR_R_INTERNAL_ERROR ) ; return ( 0 ) ; } rdata -> packet = s -> packet ; rdata -> packet_length = s -> packet_length ; memcpy ( & ( rdata -> rbuf ) , & ( s -> s3 -> rbuf ) , sizeof ( SSL3_BUFFER ) ) ; memcpy ( & ( rdata -> rrec ) , & ( s -> s3 -> rrec ) , sizeof ( SSL3_RECORD ) ) ; item -> data = rdata ; # ifndef OPENSSL_NO_SCTP if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && ( s -> state == SSL3_ST_SR_FINISHED_A || s -> state == SSL3_ST_CR_FINISHED_A ) ) { BIO_ctrl ( SSL_get_rbio ( s ) , BIO_CTRL_DGRAM_SCTP_GET_RCVINFO , sizeof ( rdata -> recordinfo ) , & rdata -> recordinfo ) ; } # endif s -> packet = NULL ; s -> packet_length = 0 ; memset ( & ( s -> s3 -> rbuf ) , 0 , sizeof ( SSL3_BUFFER ) ) ; memset ( & ( s -> s3 -> rrec ) , 0 , sizeof ( SSL3_RECORD ) ) ; if ( ! ssl3_setup_buffers ( s ) ) { SSLerr ( SSL_F_DTLS1_BUFFER_RECORD , ERR_R_INTERNAL_ERROR ) ; <S2SV_StartBug> OPENSSL_free ( rdata ) ; <S2SV_EndBug> pitem_free ( item ) ; <S2SV_StartBug> return ( 0 ) ; <S2SV_EndBug> } if ( pqueue_insert ( queue -> q , item ) == NULL ) { SSLerr ( SSL_F_DTLS1_BUFFER_RECORD , ERR_R_INTERNAL_ERROR ) ; <S2SV_StartBug> OPENSSL_free ( rdata ) ; <S2SV_EndBug> pitem_free ( item ) ; <S2SV_StartBug> return ( 0 ) ; <S2SV_EndBug> } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ERR_R_INTERNAL_ERROR ) ; if ( rdata -> rbuf . buf != NULL ) <S2SV_ModStart> OPENSSL_free ( rdata -> rbuf . buf ) ; OPENSSL_free ( rdata <S2SV_ModStart> ; return ( - 1 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ERR_R_INTERNAL_ERROR ) ; if ( rdata -> rbuf . buf != NULL ) <S2SV_ModStart> OPENSSL_free ( rdata -> rbuf . buf ) ; OPENSSL_free ( rdata <S2SV_ModStart> ; return ( - 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7501\n\n```\nCWE-59 int rpmPackageFilesInstall ( rpmts ts , rpmte te , rpmfiles files , rpmpsm psm , char * * failedFile ) { FD_t payload = rpmtePayload ( te ) ; rpmfi fi = rpmfiNewArchiveReader ( payload , files , RPMFI_ITER_READ_ARCHIVE ) ; rpmfs fs = rpmteGetFileStates ( te ) ; rpmPlugins plugins = rpmtsPlugins ( ts ) ; struct stat sb ; int saveerrno = errno ; int rc = 0 ; int nodigest = ( rpmtsFlags ( ts ) & RPMTRANS_FLAG_NOFILEDIGEST ) ? 1 : 0 ; int nofcaps = ( rpmtsFlags ( ts ) & RPMTRANS_FLAG_NOCAPS ) ? 1 : 0 ; int firsthardlink = - 1 ; int skip ; rpmFileAction action ; char * tid = NULL ; const char * suffix ; char * fpath = NULL ; if ( fi == NULL ) { rc = RPMERR_BAD_MAGIC ; goto exit ; } rasprintf ( & tid , \";%08x\" , ( unsigned ) rpmtsGetTid ( ts ) ) ; rc = fsmMkdirs ( files , fs , plugins ) ; while ( ! rc ) { rc = rpmfiNext ( fi ) ; if ( rc < 0 ) { if ( rc == RPMERR_ITER_END ) rc = 0 ; break ; } action = rpmfsGetAction ( fs , rpmfiFX ( fi ) ) ; skip = XFA_SKIPPING ( action ) ; suffix = S_ISDIR ( rpmfiFMode ( fi ) ) ? NULL : tid ; if ( action != FA_TOUCH ) { fpath = fsmFsPath ( fi , suffix ) ; } else { fpath = fsmFsPath ( fi , \"\" ) ; } rc = rpmfiStat ( fi , 1 , & sb ) ; fsmDebug ( fpath , action , & sb ) ; if ( rc ) break ; rc = rpmpluginsCallFsmFilePre ( plugins , fi , fpath , sb . st_mode , action ) ; if ( rc ) { skip = 1 ; } else { setFileState ( fs , rpmfiFX ( fi ) ) ; } if ( ! skip ) { int setmeta = 1 ; if ( ! suffix ) { rc = fsmBackup ( fi , action ) ; } if ( ! suffix ) { rc = fsmVerify ( fpath , fi ) ; } else { rc = ( action == FA_TOUCH ) ? 0 : RPMERR_ENOENT ; } if ( S_ISREG ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMkfile ( fi , fpath , files , psm , nodigest , & setmeta , & firsthardlink ) ; } } else if ( S_ISDIR ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { mode_t mode = sb . st_mode ; mode &= ~ 07777 ; mode |= 00700 ; rc = fsmMkdir ( fpath , mode ) ; } } else if ( S_ISLNK ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmSymlink ( rpmfiFLink ( fi ) , fpath ) ; } } else if ( S_ISFIFO ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMkfifo ( fpath , 0000 ) ; } } else if ( S_ISCHR ( sb . st_mode ) || S_ISBLK ( sb . st_mode ) || S_ISSOCK ( sb . st_mode ) ) { if ( rc == RPMERR_ENOENT ) { rc = fsmMknod ( fpath , sb . st_mode , sb . st_rdev ) ; } } else { if ( ! IS_DEV_LOG ( fpath ) ) rc = RPMERR_UNKNOWN_FILETYPE ; } if ( ! rc && setmeta ) { rc = fsmSetmeta ( fpath , fi , plugins , action , & sb , nofcaps ) ; } } else if ( firsthardlink >= 0 && rpmfiArchiveHasContent ( fi ) ) { char * fn = rpmfilesFN ( files , firsthardlink ) ; <S2SV_StartBug> rc = expandRegular ( fi , fn , psm , nodigest , 0 ) ; <S2SV_EndBug> firsthardlink = - 1 ; free ( fn ) ; } if ( rc ) { if ( ! skip ) { if ( suffix && ( action != FA_TOUCH ) ) { ( void ) fsmRemove ( fpath , sb . st_mode ) ; } errno = saveerrno ; } } else { rpmpsmNotify ( psm , RPMCALLBACK_INST_PROGRESS , rpmfiArchiveTell ( fi ) ) ; if ( ! skip ) { if ( suffix ) rc = fsmBackup ( fi , action ) ; if ( ! rc ) rc = fsmCommit ( & fpath , fi , action , suffix ) ; } } if ( rc ) * failedFile = xstrdup ( fpath ) ; rpmpluginsCallFsmFilePost ( plugins , fi , fpath , sb . st_mode , action , rc ) ; fpath = _free ( fpath ) ; } rpmswAdd ( rpmtsOp ( ts , RPMTS_OP_UNCOMPRESS ) , fdOp ( payload , FDSTAT_READ ) ) ; rpmswAdd ( rpmtsOp ( ts , RPMTS_OP_DIGEST ) , fdOp ( payload , FDSTAT_DIGEST ) ) ; exit : rpmfiArchiveClose ( fi ) ; rpmfiFree ( fi ) ; Fclose ( payload ) ; free ( tid ) ; free ( fpath ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , psm , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16995\n\n```\nCWE-119 static int check_alu_op ( struct bpf_verifier_env * env , struct bpf_insn * insn ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; int err ; if ( opcode == BPF_END || opcode == BPF_NEG ) { if ( opcode == BPF_NEG ) { if ( BPF_SRC ( insn -> code ) != 0 || insn -> src_reg != BPF_REG_0 || insn -> off != 0 || insn -> imm != 0 ) { verbose ( env , \"BPF_NEG<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 || ( insn -> imm != 16 && insn -> imm != 32 && insn -> imm != 64 ) || BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { verbose ( env , \"BPF_END<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , insn -> dst_reg ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>prohibited\\\\n\" , insn -> dst_reg ) ; return - EACCES ; } err = check_reg_arg ( env , insn -> dst_reg , DST_OP ) ; if ( err ) return err ; } else if ( opcode == BPF_MOV ) { if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 || insn -> off != 0 ) { verbose ( env , \"BPF_MOV<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 ) { verbose ( env , \"BPF_MOV<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , DST_OP ) ; if ( err ) return err ; if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { regs [ insn -> dst_reg ] = regs [ insn -> src_reg ] ; regs [ insn -> dst_reg ] . live |= REG_LIVE_WRITTEN ; } else { if ( is_pointer_value ( env , insn -> src_reg ) ) { verbose ( env , \"R%d<S2SV_blank>partial<S2SV_blank>copy<S2SV_blank>of<S2SV_blank>pointer\\\\n\" , insn -> src_reg ) ; return - EACCES ; } mark_reg_unknown ( env , regs , insn -> dst_reg ) ; regs [ insn -> dst_reg ] . var_off = tnum_cast ( regs [ insn -> dst_reg ] . var_off , 4 ) ; __update_reg_bounds ( & regs [ insn -> dst_reg ] ) ; } } else { regs [ insn -> dst_reg ] . type = SCALAR_VALUE ; <S2SV_StartBug> __mark_reg_known ( regs + insn -> dst_reg , insn -> imm ) ; <S2SV_EndBug> } } else if ( opcode > BPF_END ) { verbose ( env , \"invalid<S2SV_blank>BPF_ALU<S2SV_blank>opcode<S2SV_blank>%x\\\\n\" , opcode ) ; return - EINVAL ; } else { if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 || insn -> off != 0 ) { verbose ( env , \"BPF_ALU<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 ) { verbose ( env , \"BPF_ALU<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( ( opcode == BPF_MOD || opcode == BPF_DIV ) && BPF_SRC ( insn -> code ) == BPF_K && insn -> imm == 0 ) { verbose ( env , \"div<S2SV_blank>by<S2SV_blank>zero\\\\n\" ) ; return - EINVAL ; } if ( ( opcode == BPF_LSH || opcode == BPF_RSH || opcode == BPF_ARSH ) && BPF_SRC ( insn -> code ) == BPF_K ) { int size = BPF_CLASS ( insn -> code ) == BPF_ALU64 ? 64 : 32 ; if ( insn -> imm < 0 || insn -> imm >= size ) { verbose ( env , \"invalid<S2SV_blank>shift<S2SV_blank>%d\\\\n\" , insn -> imm ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; return adjust_reg_min_max_vals ( env , insn ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = SCALAR_VALUE ; if ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { <S2SV_ModStart> -> dst_reg , insn -> imm ) ; } else { __mark_reg_known ( regs + insn -> dst_reg , ( u32 ) insn -> imm ) ; } <S2SV_ModEnd> } } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4265\n\n```\nCWE-000 int av_reallocp_array ( void * ptr , size_t nmemb , size_t size ) { void * * ptrptr = ptr ; * ptrptr = av_realloc_f ( * ptrptr , nmemb , size ) ; <S2SV_StartBug> if ( ! * ptrptr && ! ( nmemb && size ) ) <S2SV_EndBug> return AVERROR ( ENOMEM ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ptrptr && <S2SV_ModEnd> nmemb && size <S2SV_ModStart> nmemb && size <S2SV_ModEnd> ) return AVERROR\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3430\n\n```\nCWE-200 int rds_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int msg_flags ) { struct sock * sk = sock -> sk ; struct rds_sock * rs = rds_sk_to_rs ( sk ) ; long timeo ; int ret = 0 , nonblock = msg_flags & MSG_DONTWAIT ; struct sockaddr_in * sin ; struct rds_incoming * inc = NULL ; timeo = sock_rcvtimeo ( sk , nonblock ) ; <S2SV_StartBug> rdsdebug ( \"size<S2SV_blank>%zu<S2SV_blank>flags<S2SV_blank>0x%x<S2SV_blank>timeo<S2SV_blank>%ld\\\\n\" , size , msg_flags , timeo ) ; <S2SV_EndBug> if ( msg_flags & MSG_OOB ) goto out ; while ( 1 ) { if ( ! list_empty ( & rs -> rs_notify_queue ) ) { ret = rds_notify_queue_get ( rs , msg ) ; break ; } if ( rs -> rs_cong_notify ) { ret = rds_notify_cong ( rs , msg ) ; break ; } if ( ! rds_next_incoming ( rs , & inc ) ) { if ( nonblock ) { ret = - EAGAIN ; break ; } timeo = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , ( ! list_empty ( & rs -> rs_notify_queue ) || rs -> rs_cong_notify || rds_next_incoming ( rs , & inc ) ) , timeo ) ; rdsdebug ( \"recvmsg<S2SV_blank>woke<S2SV_blank>inc<S2SV_blank>%p<S2SV_blank>timeo<S2SV_blank>%ld\\\\n\" , inc , timeo ) ; if ( timeo > 0 || timeo == MAX_SCHEDULE_TIMEOUT ) continue ; ret = timeo ; if ( ret == 0 ) ret = - ETIMEDOUT ; break ; } rdsdebug ( \"copying<S2SV_blank>inc<S2SV_blank>%p<S2SV_blank>from<S2SV_blank>%pI4:%u<S2SV_blank>to<S2SV_blank>user\\\\n\" , inc , & inc -> i_conn -> c_faddr , ntohs ( inc -> i_hdr . h_sport ) ) ; ret = inc -> i_conn -> c_trans -> inc_copy_to_user ( inc , msg -> msg_iov , size ) ; if ( ret < 0 ) break ; if ( ! rds_still_queued ( rs , inc , ! ( msg_flags & MSG_PEEK ) ) ) { rds_inc_put ( inc ) ; inc = NULL ; rds_stats_inc ( s_recv_deliver_raced ) ; continue ; } if ( ret < be32_to_cpu ( inc -> i_hdr . h_len ) ) { if ( msg_flags & MSG_TRUNC ) ret = be32_to_cpu ( inc -> i_hdr . h_len ) ; msg -> msg_flags |= MSG_TRUNC ; } if ( rds_cmsg_recv ( inc , msg ) ) { ret = - EFAULT ; goto out ; } rds_stats_inc ( s_recv_delivered ) ; sin = ( struct sockaddr_in * ) msg -> msg_name ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_port = inc -> i_hdr . h_sport ; sin -> sin_addr . s_addr = inc -> i_saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; <S2SV_StartBug> } <S2SV_EndBug> break ; } if ( inc ) rds_inc_put ( inc ) ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , timeo ) ; msg -> msg_namelen = 0 <S2SV_ModStart> ) ) ; msg -> msg_namelen = sizeof ( * sin ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 static int __ip6_datagram_connect ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct sockaddr_in6 * usin = ( struct sockaddr_in6 * ) uaddr ; struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct in6_addr * daddr , * final_p , final ; struct dst_entry * dst ; struct flowi6 fl6 ; struct ip6_flowlabel * flowlabel = NULL ; struct ipv6_txoptions * opt ; int addr_type ; int err ; if ( usin -> sin6_family == AF_INET ) { if ( __ipv6_only_sock ( sk ) ) return - EAFNOSUPPORT ; err = __ip4_datagram_connect ( sk , uaddr , addr_len ) ; goto ipv4_connected ; } if ( addr_len < SIN6_LEN_RFC2133 ) return - EINVAL ; if ( usin -> sin6_family != AF_INET6 ) return - EAFNOSUPPORT ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; if ( np -> sndflow ) { fl6 . flowlabel = usin -> sin6_flowinfo & IPV6_FLOWINFO_MASK ; if ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) { flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( ! flowlabel ) return - EINVAL ; } } addr_type = ipv6_addr_type ( & usin -> sin6_addr ) ; if ( addr_type == IPV6_ADDR_ANY ) { usin -> sin6_addr . s6_addr [ 15 ] = 0x01 ; } daddr = & usin -> sin6_addr ; if ( addr_type == IPV6_ADDR_MAPPED ) { struct sockaddr_in sin ; if ( __ipv6_only_sock ( sk ) ) { err = - ENETUNREACH ; goto out ; } sin . sin_family = AF_INET ; sin . sin_addr . s_addr = daddr -> s6_addr32 [ 3 ] ; sin . sin_port = usin -> sin6_port ; err = __ip4_datagram_connect ( sk , ( struct sockaddr * ) & sin , sizeof ( sin ) ) ; ipv4_connected : if ( err ) goto out ; ipv6_addr_set_v4mapped ( inet -> inet_daddr , & sk -> sk_v6_daddr ) ; if ( ipv6_addr_any ( & np -> saddr ) || ipv6_mapped_addr_any ( & np -> saddr ) ) ipv6_addr_set_v4mapped ( inet -> inet_saddr , & np -> saddr ) ; if ( ipv6_addr_any ( & sk -> sk_v6_rcv_saddr ) || ipv6_mapped_addr_any ( & sk -> sk_v6_rcv_saddr ) ) { ipv6_addr_set_v4mapped ( inet -> inet_rcv_saddr , & sk -> sk_v6_rcv_saddr ) ; if ( sk -> sk_prot -> rehash ) sk -> sk_prot -> rehash ( sk ) ; } goto out ; } if ( __ipv6_addr_needs_scope_id ( addr_type ) ) { if ( addr_len >= sizeof ( struct sockaddr_in6 ) && usin -> sin6_scope_id ) { if ( sk -> sk_bound_dev_if && sk -> sk_bound_dev_if != usin -> sin6_scope_id ) { err = - EINVAL ; goto out ; } sk -> sk_bound_dev_if = usin -> sin6_scope_id ; } if ( ! sk -> sk_bound_dev_if && ( addr_type & IPV6_ADDR_MULTICAST ) ) sk -> sk_bound_dev_if = np -> mcast_oif ; if ( ! sk -> sk_bound_dev_if ) { err = - EINVAL ; goto out ; } } sk -> sk_v6_daddr = * daddr ; np -> flow_label = fl6 . flowlabel ; inet -> inet_dport = usin -> sin6_port ; fl6 . flowi6_proto = sk -> sk_protocol ; fl6 . daddr = sk -> sk_v6_daddr ; fl6 . saddr = np -> saddr ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . flowi6_mark = sk -> sk_mark ; fl6 . fl6_dport = inet -> inet_dport ; fl6 . fl6_sport = inet -> inet_sport ; if ( ! fl6 . flowi6_oif && ( addr_type & IPV6_ADDR_MULTICAST ) ) fl6 . flowi6_oif = np -> mcast_oif ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; <S2SV_StartBug> opt = flowlabel ? flowlabel -> opt : np -> opt ; <S2SV_EndBug> <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , opt , & final ) ; <S2SV_EndBug> dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; err = 0 ; if ( IS_ERR ( dst ) ) { err = PTR_ERR ( dst ) ; goto out ; } if ( ipv6_addr_any ( & np -> saddr ) ) np -> saddr = fl6 . saddr ; if ( ipv6_addr_any ( & sk -> sk_v6_rcv_saddr ) ) { sk -> sk_v6_rcv_saddr = fl6 . saddr ; inet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; if ( sk -> sk_prot -> rehash ) sk -> sk_prot -> rehash ( sk ) ; } ip6_dst_store ( sk , dst , ipv6_addr_equal ( & fl6 . daddr , & sk -> sk_v6_daddr ) ? & sk -> sk_v6_daddr : NULL , # ifdef CONFIG_IPV6_SUBTREES ipv6_addr_equal ( & fl6 . saddr , & np -> saddr ) ? & np -> saddr : # endif NULL ) ; sk -> sk_state = TCP_ESTABLISHED ; sk_set_txhash ( sk ) ; out : fl6_sock_release ( flowlabel ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; rcu_read_lock ( ) ; <S2SV_ModStart> -> opt : rcu_dereference ( <S2SV_ModStart> np -> opt ) <S2SV_ModStart> , & final ) ; rcu_read_unlock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 static int su3000_power_ctrl ( struct dvb_usb_device * d , int i ) { struct dw2102_state * state = ( struct dw2102_state * ) d -> priv ; <S2SV_StartBug> u8 obuf [ ] = { 0xde , 0 } ; <S2SV_EndBug> info ( \"%s:<S2SV_blank>%d,<S2SV_blank>initialized<S2SV_blank>%d\" , __func__ , i , state -> initialized ) ; if ( i && ! state -> initialized ) { <S2SV_StartBug> state -> initialized = 1 ; <S2SV_EndBug> <S2SV_StartBug> return dvb_usb_generic_rw ( d , obuf , 2 , NULL , 0 , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> priv ; int ret = 0 <S2SV_ModEnd> ; info ( <S2SV_ModStart> initialized ) { mutex_lock ( & d -> data_mutex ) ; state -> data [ 0 ] = 0xde ; state -> data [ 1 ] = 0 ; <S2SV_ModStart> = 1 ; ret = <S2SV_ModEnd> dvb_usb_generic_rw ( d <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 2 , <S2SV_ModStart> 0 ) ; mutex_unlock ( & d -> data_mutex ) ; } return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9520\n\n```\nCWE-416 R_API int r_core_bin_set_env ( RCore * r , RBinFile * binfile ) { RBinObject * binobj = binfile ? binfile -> o : NULL ; RBinInfo * info = binobj ? binobj -> info : NULL ; if ( info ) { int va = info -> has_va ; <S2SV_StartBug> const char * arch = info -> arch ; <S2SV_EndBug> ut16 bits = info -> bits ; ut64 baseaddr = r_bin_get_baddr ( r -> bin ) ; r_config_set_i ( r -> config , \"io.va\" , ( binobj -> info ) ? binobj -> info -> has_va : 0 ) ; r_config_set_i ( r -> config , \"bin.baddr\" , baseaddr ) ; r_config_set ( r -> config , \"asm.arch\" , arch ) ; r_config_set_i ( r -> config , \"asm.bits\" , bits ) ; r_config_set ( r -> config , \"anal.arch\" , arch ) ; <S2SV_StartBug> if ( info -> cpu && * info -> cpu ) { <S2SV_EndBug> <S2SV_StartBug> r_config_set ( r -> config , \"anal.cpu\" , info -> cpu ) ; <S2SV_EndBug> } else { r_config_set ( r -> config , \"anal.cpu\" , arch ) ; } r_asm_use ( r -> assembler , arch ) ; r_core_bin_info ( r , R_CORE_BIN_ACC_ALL , R_CORE_BIN_SET , va , NULL , NULL ) ; <S2SV_StartBug> r_core_bin_set_cur ( r , binfile ) ; <S2SV_EndBug> return true ; } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> has_va ; <S2SV_ModEnd> char * arch <S2SV_ModStart> * arch = strdup ( info -> arch ) ; char * cpu = info -> cpu ? strdup ( info -> cpu ) : NULL <S2SV_ModEnd> ; ut16 bits <S2SV_ModStart> ; if ( <S2SV_ModEnd> cpu && * <S2SV_ModStart> cpu && * <S2SV_ModEnd> cpu ) { <S2SV_ModStart> , \"anal.cpu\" , <S2SV_ModEnd> cpu ) ; <S2SV_ModStart> r , binfile ) ; free ( cpu ) ; free ( arch\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 <S2SV_StartBug> int ip_options_get ( struct net * net , struct ip_options * * optp , <S2SV_EndBug> unsigned char * data , int optlen ) { <S2SV_StartBug> struct ip_options * opt = ip_options_get_alloc ( optlen ) ; <S2SV_EndBug> if ( ! opt ) return - ENOMEM ; if ( optlen ) <S2SV_StartBug> memcpy ( opt -> __data , data , optlen ) ; <S2SV_EndBug> return ip_options_get_finish ( net , optp , opt , optlen ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> net , struct ip_options_rcu <S2SV_ModEnd> * * optp <S2SV_ModStart> ) { struct ip_options_rcu <S2SV_ModEnd> * opt = <S2SV_ModStart> ( opt -> opt .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 static int snd_ctl_elem_user_tlv ( struct snd_kcontrol * kcontrol , int op_flag , unsigned int size , unsigned int __user * tlv ) { struct user_element * ue = kcontrol -> private_data ; int change = 0 ; void * new_data ; if ( op_flag > 0 ) { if ( size > 1024 * 128 ) return - EINVAL ; new_data = memdup_user ( tlv , size ) ; if ( IS_ERR ( new_data ) ) return PTR_ERR ( new_data ) ; <S2SV_StartBug> change = ue -> tlv_data_size != size ; <S2SV_EndBug> if ( ! change ) change = memcmp ( ue -> tlv_data , new_data , size ) ; kfree ( ue -> tlv_data ) ; ue -> tlv_data = new_data ; ue -> tlv_data_size = size ; <S2SV_StartBug> } else { <S2SV_EndBug> if ( ! ue -> tlv_data_size || ! ue -> tlv_data ) <S2SV_StartBug> return - ENXIO ; <S2SV_EndBug> <S2SV_StartBug> if ( size < ue -> tlv_data_size ) <S2SV_EndBug> <S2SV_StartBug> return - ENOSPC ; <S2SV_EndBug> <S2SV_StartBug> if ( copy_to_user ( tlv , ue -> tlv_data , ue -> tlv_data_size ) ) <S2SV_EndBug> <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return change ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> new_data ) ; mutex_lock ( & ue -> card -> user_ctl_lock ) ; <S2SV_ModStart> = size ; mutex_unlock ( & ue -> card -> user_ctl_lock ) ; <S2SV_ModStart> } else { int ret = 0 ; mutex_lock ( & ue -> card -> user_ctl_lock ) ; <S2SV_ModStart> -> tlv_data ) { ret = <S2SV_ModEnd> - ENXIO ; <S2SV_ModStart> - ENXIO ; goto err_unlock ; } <S2SV_ModStart> -> tlv_data_size ) { ret = <S2SV_ModEnd> - ENOSPC ; <S2SV_ModStart> - ENOSPC ; goto err_unlock ; } <S2SV_ModStart> tlv_data_size ) ) ret = <S2SV_ModEnd> - EFAULT ; <S2SV_ModStart> - EFAULT ; err_unlock : mutex_unlock ( & ue -> card -> user_ctl_lock ) ; if ( ret ) return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7495\n\n```\nCWE-200 int ext4_map_blocks ( handle_t * handle , struct inode * inode , struct ext4_map_blocks * map , int flags ) { struct extent_status es ; int retval ; int ret = 0 ; # ifdef ES_AGGRESSIVE_TEST struct ext4_map_blocks orig_map ; memcpy ( & orig_map , map , sizeof ( * map ) ) ; # endif map -> m_flags = 0 ; ext_debug ( \"ext4_map_blocks():<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>flag<S2SV_blank>%d,<S2SV_blank>max_blocks<S2SV_blank>%u,\" \"logical<S2SV_blank>block<S2SV_blank>%lu\\\\n\" , inode -> i_ino , flags , map -> m_len , ( unsigned long ) map -> m_lblk ) ; if ( unlikely ( map -> m_len > INT_MAX ) ) map -> m_len = INT_MAX ; if ( unlikely ( map -> m_lblk >= EXT_MAX_BLOCKS ) ) return - EFSCORRUPTED ; if ( ext4_es_lookup_extent ( inode , map -> m_lblk , & es ) ) { if ( ext4_es_is_written ( & es ) || ext4_es_is_unwritten ( & es ) ) { map -> m_pblk = ext4_es_pblock ( & es ) + map -> m_lblk - es . es_lblk ; map -> m_flags |= ext4_es_is_written ( & es ) ? EXT4_MAP_MAPPED : EXT4_MAP_UNWRITTEN ; retval = es . es_len - ( map -> m_lblk - es . es_lblk ) ; if ( retval > map -> m_len ) retval = map -> m_len ; map -> m_len = retval ; } else if ( ext4_es_is_delayed ( & es ) || ext4_es_is_hole ( & es ) ) { map -> m_pblk = 0 ; retval = es . es_len - ( map -> m_lblk - es . es_lblk ) ; if ( retval > map -> m_len ) retval = map -> m_len ; map -> m_len = retval ; retval = 0 ; } else { BUG_ON ( 1 ) ; } # ifdef ES_AGGRESSIVE_TEST ext4_map_blocks_es_recheck ( handle , inode , map , & orig_map , flags ) ; # endif goto found ; } down_read ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) { retval = ext4_ext_map_blocks ( handle , inode , map , flags & EXT4_GET_BLOCKS_KEEP_SIZE ) ; } else { retval = ext4_ind_map_blocks ( handle , inode , map , flags & EXT4_GET_BLOCKS_KEEP_SIZE ) ; } if ( retval > 0 ) { unsigned int status ; if ( unlikely ( retval != map -> m_len ) ) { ext4_warning ( inode -> i_sb , \"ES<S2SV_blank>len<S2SV_blank>assertion<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>inode<S2SV_blank>\" \"%lu:<S2SV_blank>retval<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>map->m_len<S2SV_blank>%d\" , inode -> i_ino , retval , map -> m_len ) ; WARN_ON ( 1 ) ; } status = map -> m_flags & EXT4_MAP_UNWRITTEN ? EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN ; if ( ! ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) && ! ( status & EXTENT_STATUS_WRITTEN ) && ext4_find_delalloc_range ( inode , map -> m_lblk , map -> m_lblk + map -> m_len - 1 ) ) status |= EXTENT_STATUS_DELAYED ; ret = ext4_es_insert_extent ( inode , map -> m_lblk , map -> m_len , map -> m_pblk , status ) ; if ( ret < 0 ) retval = ret ; } up_read ( ( & EXT4_I ( inode ) -> i_data_sem ) ) ; found : if ( retval > 0 && map -> m_flags & EXT4_MAP_MAPPED ) { ret = check_block_validity ( inode , map ) ; if ( ret != 0 ) return ret ; } if ( ( flags & EXT4_GET_BLOCKS_CREATE ) == 0 ) return retval ; if ( retval > 0 && map -> m_flags & EXT4_MAP_MAPPED ) if ( ! ( flags & EXT4_GET_BLOCKS_CONVERT_UNWRITTEN ) ) return retval ; map -> m_flags &= ~ EXT4_MAP_FLAGS ; down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) { retval = ext4_ext_map_blocks ( handle , inode , map , flags ) ; } else { retval = ext4_ind_map_blocks ( handle , inode , map , flags ) ; if ( retval > 0 && map -> m_flags & EXT4_MAP_NEW ) { ext4_clear_inode_state ( inode , EXT4_STATE_EXT_MIGRATE ) ; } if ( ( retval > 0 ) && ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) ) ext4_da_update_reserve_space ( inode , retval , 1 ) ; } if ( retval > 0 ) { unsigned int status ; if ( unlikely ( retval != map -> m_len ) ) { ext4_warning ( inode -> i_sb , \"ES<S2SV_blank>len<S2SV_blank>assertion<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>inode<S2SV_blank>\" \"%lu:<S2SV_blank>retval<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>map->m_len<S2SV_blank>%d\" , inode -> i_ino , retval , map -> m_len ) ; WARN_ON ( 1 ) ; } if ( flags & EXT4_GET_BLOCKS_ZERO && map -> m_flags & EXT4_MAP_MAPPED && map -> m_flags & EXT4_MAP_NEW ) { ret = ext4_issue_zeroout ( inode , map -> m_lblk , map -> m_pblk , map -> m_len ) ; if ( ret ) { retval = ret ; goto out_sem ; } } if ( ( flags & EXT4_GET_BLOCKS_PRE_IO ) && ext4_es_lookup_extent ( inode , map -> m_lblk , & es ) ) { if ( ext4_es_is_written ( & es ) ) goto out_sem ; } status = map -> m_flags & EXT4_MAP_UNWRITTEN ? EXTENT_STATUS_UNWRITTEN : EXTENT_STATUS_WRITTEN ; if ( ! ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) && ! ( status & EXTENT_STATUS_WRITTEN ) && ext4_find_delalloc_range ( inode , map -> m_lblk , map -> m_lblk + map -> m_len - 1 ) ) status |= EXTENT_STATUS_DELAYED ; ret = ext4_es_insert_extent ( inode , map -> m_lblk , map -> m_len , map -> m_pblk , status ) ; if ( ret < 0 ) { retval = ret ; goto out_sem ; } } out_sem : up_write ( ( & EXT4_I ( inode ) -> i_data_sem ) ) ; if ( retval > 0 && map -> m_flags & EXT4_MAP_MAPPED ) { ret = check_block_validity ( inode , map ) ; if ( ret != 0 ) return ret ; <S2SV_StartBug> } <S2SV_EndBug> return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ret ; if ( map -> m_flags & EXT4_MAP_NEW && ! ( map -> m_flags & EXT4_MAP_UNWRITTEN ) && ! ( flags & EXT4_GET_BLOCKS_ZERO ) && ! IS_NOQUOTA ( inode ) && ext4_should_order_data ( inode ) ) { ret = ext4_jbd2_file_inode ( handle , inode ) ; if ( ret ) return ret ; } } return <S2SV_ModEnd> retval ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15920\n\n```\nCWE-416 int SMB2_read ( const unsigned int xid , struct cifs_io_parms * io_parms , unsigned int * nbytes , char * * buf , int * buf_type ) { struct smb_rqst rqst ; int resp_buftype , rc = - EACCES ; struct smb2_read_plain_req * req = NULL ; struct smb2_read_rsp * rsp = NULL ; struct kvec iov [ 1 ] ; struct kvec rsp_iov ; unsigned int total_len ; int flags = CIFS_LOG_ERROR ; struct cifs_ses * ses = io_parms -> tcon -> ses ; * nbytes = 0 ; rc = smb2_new_read_req ( ( void * * ) & req , & total_len , io_parms , NULL , 0 , 0 ) ; if ( rc ) return rc ; if ( smb3_encryption_required ( io_parms -> tcon ) ) flags |= CIFS_TRANSFORM_REQ ; iov [ 0 ] . iov_base = ( char * ) req ; iov [ 0 ] . iov_len = total_len ; memset ( & rqst , 0 , sizeof ( struct smb_rqst ) ) ; rqst . rq_iov = iov ; rqst . rq_nvec = 1 ; rc = cifs_send_recv ( xid , ses , & rqst , & resp_buftype , flags , & rsp_iov ) ; <S2SV_StartBug> cifs_small_buf_release ( req ) ; <S2SV_EndBug> rsp = ( struct smb2_read_rsp * ) rsp_iov . iov_base ; if ( rc ) { if ( rc != - ENODATA ) { cifs_stats_fail_inc ( io_parms -> tcon , SMB2_READ_HE ) ; cifs_dbg ( VFS , \"Send<S2SV_blank>error<S2SV_blank>in<S2SV_blank>read<S2SV_blank>=<S2SV_blank>%d\\\\n\" , rc ) ; trace_smb3_read_err ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , ses -> Suid , io_parms -> offset , io_parms -> length , rc ) ; } else trace_smb3_read_done ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , ses -> Suid , io_parms -> offset , 0 ) ; free_rsp_buf ( resp_buftype , rsp_iov . iov_base ) ; return rc == - ENODATA ? 0 : rc ; } else trace_smb3_read_done ( xid , req -> PersistentFileId , io_parms -> tcon -> tid , ses -> Suid , io_parms -> offset , io_parms -> length ) ; <S2SV_StartBug> * nbytes = le32_to_cpu ( rsp -> DataLength ) ; <S2SV_EndBug> if ( ( * nbytes > CIFS_MAX_MSGSIZE ) || ( * nbytes > io_parms -> length ) ) { cifs_dbg ( FYI , \"bad<S2SV_blank>length<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>count<S2SV_blank>%d\\\\n\" , * nbytes , io_parms -> length ) ; rc = - EIO ; * nbytes = 0 ; } if ( * buf ) { memcpy ( * buf , ( char * ) rsp + rsp -> DataOffset , * nbytes ) ; free_rsp_buf ( resp_buftype , rsp_iov . iov_base ) ; } else if ( resp_buftype != CIFS_NO_BUFFER ) { * buf = rsp_iov . iov_base ; if ( resp_buftype == CIFS_SMALL_BUFFER ) * buf_type = CIFS_SMALL_BUFFER ; else if ( resp_buftype == CIFS_LARGE_BUFFER ) * buf_type = CIFS_LARGE_BUFFER ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rsp_iov ) ; <S2SV_ModEnd> rsp = ( <S2SV_ModStart> length ) ; cifs_small_buf_release ( req ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14323\n\n```\nCWE-119 static void ssdp_recv ( int sd ) { ssize_t len ; struct sockaddr sa ; socklen_t salen ; <S2SV_StartBug> char buf [ MAX_PKT_SIZE ] ; <S2SV_EndBug> memset ( buf , 0 , sizeof ( buf ) ) ; <S2SV_StartBug> len = recvfrom ( sd , buf , sizeof ( buf ) , MSG_DONTWAIT , & sa , & salen ) ; <S2SV_EndBug> if ( len > 0 ) { <S2SV_StartBug> buf [ len ] = 0 ; <S2SV_EndBug> if ( sa . sa_family != AF_INET ) return ; if ( strstr ( buf , \"M-SEARCH<S2SV_blank>*\" ) ) { size_t i ; char * ptr , * type ; struct ifsock * ifs ; struct sockaddr_in * sin = ( struct sockaddr_in * ) & sa ; ifs = find_outbound ( & sa ) ; if ( ! ifs ) { logit ( LOG_DEBUG , \"No<S2SV_blank>matching<S2SV_blank>socket<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\" , inet_ntoa ( sin -> sin_addr ) ) ; return ; } logit ( LOG_DEBUG , \"Matching<S2SV_blank>socket<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s\" , inet_ntoa ( sin -> sin_addr ) ) ; type = strcasestr ( buf , \"\\\\r\\\\nST:\" ) ; if ( ! type ) { logit ( LOG_DEBUG , \"No<S2SV_blank>Search<S2SV_blank>Type<S2SV_blank>(ST:)<S2SV_blank>found<S2SV_blank>in<S2SV_blank>M-SEARCH<S2SV_blank>*,<S2SV_blank>assuming<S2SV_blank>\" SSDP_ST_ALL ) ; type = SSDP_ST_ALL ; send_message ( ifs , type , & sa ) ; return ; } type = strchr ( type , ':' ) ; if ( ! type ) return ; type ++ ; while ( isspace ( * type ) ) type ++ ; ptr = strstr ( type , \"\\\\r\\\\n\" ) ; if ( ! ptr ) return ; * ptr = 0 ; for ( i = 0 ; supported_types [ i ] ; i ++ ) { if ( ! strcmp ( supported_types [ i ] , type ) ) { logit ( LOG_DEBUG , \"M-SEARCH<S2SV_blank>*<S2SV_blank>ST:<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>port<S2SV_blank>%d\" , type , inet_ntoa ( sin -> sin_addr ) , ntohs ( sin -> sin_port ) ) ; send_message ( ifs , type , & sa ) ; return ; } } logit ( LOG_DEBUG , \"M-SEARCH<S2SV_blank>*<S2SV_blank>for<S2SV_blank>unsupported<S2SV_blank>ST:<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s\" , type , inet_ntoa ( sin -> sin_addr ) ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buf [ MAX_PKT_SIZE + 1 <S2SV_ModStart> ( buf ) - 1 <S2SV_ModStart> 0 ) { <S2SV_ModEnd> if ( sa\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3156\n\n```\nCWE-399 static int masq_inet_event ( struct notifier_block * this , unsigned long event , void * ptr ) { <S2SV_StartBug> struct net_device * dev = ( ( struct in_ifaddr * ) ptr ) -> ifa_dev -> dev ; <S2SV_EndBug> struct netdev_notifier_info info ; <S2SV_StartBug> netdev_notifier_info_init ( & info , dev ) ; <S2SV_EndBug> return masq_device_event ( this , event , & info ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct in_device * idev <S2SV_ModEnd> = ( ( <S2SV_ModStart> ) -> ifa_dev <S2SV_ModEnd> ; struct netdev_notifier_info <S2SV_ModStart> netdev_notifier_info info ; if ( idev -> dead ) return NOTIFY_DONE ; <S2SV_ModStart> & info , idev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8690\n\n```\nCWE-476 static int bmp_getint32 ( jas_stream_t * in , int_fast32_t * val ) { int n ; uint_fast32_t v ; int c ; for ( n = 4 , v = 0 ; ; ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) { return - 1 ; } <S2SV_StartBug> v |= ( c << 24 ) ; <S2SV_EndBug> if ( -- n <= 0 ) { break ; } v >>= 8 ; } if ( val ) { * val = v ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> v |= ( JAS_CAST ( uint_fast32_t , c ) <S2SV_ModEnd> << 24 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2206\n\n```\nCWE-000 sctp_disposition_t sctp_sf_do_5_2_4_dupcook ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { sctp_disposition_t retval ; struct sctp_chunk * chunk = arg ; struct sctp_association * new_asoc ; int error = 0 ; char action ; struct sctp_chunk * err_chk_p ; if ( ! sctp_chunk_length_valid ( chunk , sizeof ( sctp_chunkhdr_t ) ) ) return sctp_sf_violation_chunklen ( net , ep , asoc , type , arg , commands ) ; chunk -> subh . cookie_hdr = ( struct sctp_signed_cookie * ) chunk -> skb -> data ; if ( ! pskb_pull ( chunk -> skb , ntohs ( chunk -> chunk_hdr -> length ) - sizeof ( sctp_chunkhdr_t ) ) ) goto nomem ; new_asoc = sctp_unpack_cookie ( ep , asoc , chunk , GFP_ATOMIC , & error , & err_chk_p ) ; if ( ! new_asoc ) { switch ( error ) { case - SCTP_IERROR_NOMEM : goto nomem ; case - SCTP_IERROR_STALE_COOKIE : sctp_send_stale_cookie_err ( net , ep , asoc , chunk , commands , err_chk_p ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; case - SCTP_IERROR_BAD_SIG : default : return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } } action = sctp_tietags_compare ( new_asoc , asoc ) ; switch ( action ) { case 'A' : retval = sctp_sf_do_dupcook_a ( net , ep , asoc , chunk , commands , new_asoc ) ; break ; case 'B' : retval = sctp_sf_do_dupcook_b ( net , ep , asoc , chunk , commands , new_asoc ) ; break ; case 'C' : retval = sctp_sf_do_dupcook_c ( net , ep , asoc , chunk , commands , new_asoc ) ; break ; case 'D' : retval = sctp_sf_do_dupcook_d ( net , ep , asoc , chunk , commands , new_asoc ) ; break ; default : retval = sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; break ; } <S2SV_StartBug> sctp_add_cmd_sf ( commands , SCTP_CMD_NEW_ASOC , SCTP_ASOC ( new_asoc ) ) ; <S2SV_EndBug> sctp_add_cmd_sf ( commands , SCTP_CMD_DELETE_TCB , SCTP_NULL ( ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_SET_ASOC , SCTP_ASOC ( ( struct sctp_association * ) asoc ) ) ; return retval ; nomem : return SCTP_DISPOSITION_NOMEM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( commands , SCTP_CMD_SET_ASOC <S2SV_ModEnd> , SCTP_ASOC (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 void vrrp_print_stats ( void ) { <S2SV_StartBug> FILE * file ; <S2SV_EndBug> <S2SV_StartBug> file = fopen ( stats_file , \"w\" ) ; <S2SV_EndBug> if ( ! file ) { log_message ( LOG_INFO , \"Can\\'t<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>(%d:<S2SV_blank>%s)\" , stats_file , errno , strerror ( errno ) ) ; return ; } list l = vrrp_data -> vrrp ; element e ; vrrp_t * vrrp ; <S2SV_StartBug> for ( e = LIST_HEAD ( l ) ; e ; ELEMENT_NEXT ( e ) ) { <S2SV_EndBug> vrrp = ELEMENT_DATA ( e ) ; fprintf ( file , \"VRRP<S2SV_blank>Instance:<S2SV_blank>%s\\\\n\" , vrrp -> iname ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Advertisements:\\\\n\" ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Received:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> advert_rcvd ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sent:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> advert_sent ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Became<S2SV_blank>master:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> become_master ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Released<S2SV_blank>master:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> release_master ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Packet<S2SV_blank>Errors:\\\\n\" ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Length:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> packet_len_err ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>TTL:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> ip_ttl_err ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Invalid<S2SV_blank>Type:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> invalid_type_rcvd ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Advertisement<S2SV_blank>Interval:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> advert_interval_err ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Address<S2SV_blank>List:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> addr_list_err ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank>Authentication<S2SV_blank>Errors:\\\\n\" ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Invalid<S2SV_blank>Type:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> invalid_authtype ) ; # ifdef _WITH_VRRP_AUTH_ fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Type<S2SV_blank>Mismatch:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> authtype_mismatch ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Failure:<S2SV_blank>%d\\\\n\" , vrrp -> stats -> auth_failure ) ; # endif fprintf ( file , \"<S2SV_blank><S2SV_blank>Priority<S2SV_blank>Zero:\\\\n\" ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Received:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> pri_zero_rcvd ) ; fprintf ( file , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sent:<S2SV_blank>%\" PRIu64 \"\\\\n\" , vrrp -> stats -> pri_zero_sent ) ; } fclose ( file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FILE * file = fopen_safe <S2SV_ModEnd> ( stats_file , <S2SV_ModStart> , \"w\" ) <S2SV_ModEnd> ; element e <S2SV_ModStart> * vrrp ; if ( ! file ) { log_message ( LOG_INFO , \"Can\\'t<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>(%d:<S2SV_blank>%s)\" , stats_file , errno , strerror ( errno ) ) ; return ; } LIST_FOREACH ( vrrp_data -> vrrp , vrrp , e ) { <S2SV_ModEnd> fprintf ( file\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9059\n\n```\nCWE-77 int <S2SV_StartBug> run_cmd ( int fd , ... ) <S2SV_EndBug> { pid_t pid ; sigset_t sigm , sigm_old ; sigemptyset ( & sigm ) ; sigaddset ( & sigm , SIGTERM ) ; sigprocmask ( SIG_BLOCK , & sigm , & sigm_old ) ; pid = fork ( ) ; if ( pid < 0 ) { sigprocmask ( SIG_SETMASK , & sigm_old , NULL ) ; fd_printf ( STO , \"***<S2SV_blank>cannot<S2SV_blank>fork:<S2SV_blank>%s<S2SV_blank>***\\\\r\\\\n\" , strerror ( errno ) ) ; return - 1 ; } else if ( pid ) { int status , r ; sigprocmask ( SIG_SETMASK , & sigm_old , NULL ) ; do { r = waitpid ( pid , & status , 0 ) ; } while ( r < 0 && errno == EINTR ) ; term_apply ( STI ) ; if ( WIFEXITED ( status ) ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>exit<S2SV_blank>status:<S2SV_blank>%d<S2SV_blank>***\\\\r\\\\n\" , WEXITSTATUS ( status ) ) ; return WEXITSTATUS ( status ) ; } else if ( WIFSIGNALED ( status ) ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>signal:<S2SV_blank>%d<S2SV_blank>***\\\\r\\\\n\" , WTERMSIG ( status ) ) ; return - 1 ; } else { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>abnormal<S2SV_blank>termination:<S2SV_blank>0x%x<S2SV_blank>***\\\\r\\\\n\" , r ) ; return - 1 ; } } else { long fl ; <S2SV_StartBug> char cmd [ 512 ] ; <S2SV_EndBug> term_remove ( STI ) ; term_erase ( fd ) ; fl = fcntl ( fd , F_GETFL ) ; fl &= ~ O_NONBLOCK ; fcntl ( fd , F_SETFL , fl ) ; close ( STI ) ; close ( STO ) ; dup2 ( fd , STI ) ; dup2 ( fd , STO ) ; <S2SV_StartBug> { <S2SV_EndBug> char * c , * ce ; const char * s ; int n ; va_list vls ; <S2SV_StartBug> strcpy ( cmd , EXEC ) ; <S2SV_EndBug> c = & cmd [ sizeof ( EXEC ) - 1 ] ; ce = cmd + sizeof ( cmd ) - 1 ; va_start ( vls , fd ) ; while ( ( s = va_arg ( vls , const char * ) ) ) { n = strlen ( s ) ; if ( c + n + 1 >= ce ) break ; memcpy ( c , s , n ) ; c += n ; * c ++ = '<S2SV_blank>' ; } va_end ( vls ) ; * c = '\\\\0' ; } <S2SV_StartBug> fd_printf ( STDERR_FILENO , \"%s\\\\n\" , & cmd [ sizeof ( EXEC ) - 1 ] ) ; <S2SV_EndBug> establish_child_signal_handlers ( ) ; sigprocmask ( SIG_SETMASK , & sigm_old , NULL ) ; execl ( \"/bin/sh\" , \"sh\" , \"-c\" , cmd , NULL ) ; <S2SV_StartBug> exit ( 42 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int fd , const char * cmd , const char * args_extra <S2SV_ModEnd> ) { pid_t <S2SV_ModStart> long fl ; int argc ; char * argv [ RUNCMD_ARGS_MAX + 1 ] ; int r <S2SV_ModEnd> ; term_remove ( <S2SV_ModStart> STO ) ; argc = 0 ; r = split_quoted <S2SV_ModEnd> ( cmd , <S2SV_ModStart> ( cmd , & argc , argv , RUNCMD_ARGS_MAX ) ; if ( r < 0 ) { fd_printf ( STDERR_FILENO , \"Cannot<S2SV_blank>parse<S2SV_blank>command\\\\n\" ) ; exit ( RUNCMD_EXEC_FAIL ) ; } r = split_quoted ( args_extra , & argc , argv , RUNCMD_ARGS_MAX ) ; if ( r < 0 ) { fd_printf ( STDERR_FILENO , \"Cannot<S2SV_blank>parse<S2SV_blank>extra<S2SV_blank>args\\\\n\" ) ; exit ( RUNCMD_EXEC_FAIL ) ; } if ( argc < 1 ) { fd_printf ( STDERR_FILENO , \"No<S2SV_blank>command<S2SV_blank>given\\\\n\" ) ; exit ( RUNCMD_EXEC_FAIL ) ; } argv [ argc ] = NULL ; fd_printf ( STDERR_FILENO , \"$<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , cmd , args_extra ) ; establish_child_signal_handlers ( ) ; sigprocmask ( SIG_SETMASK , & sigm_old , NULL ) ; execvp ( argv [ 0 ] , argv ) ; <S2SV_ModEnd> fd_printf ( STDERR_FILENO <S2SV_ModStart> ( STDERR_FILENO , \"exec:<S2SV_blank>%s\\\\n\" , strerror ( errno ) <S2SV_ModEnd> ) ; exit <S2SV_ModStart> ; exit ( RUNCMD_EXEC_FAIL <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15924\n\n```\nCWE-78 static void <S2SV_StartBug> build_config ( char * prefix , struct server * server ) <S2SV_EndBug> { char * path = NULL ; int path_size = strlen ( prefix ) + strlen ( server -> port ) + 20 ; path = ss_malloc ( path_size ) ; snprintf ( path , path_size , \"%s/.shadowsocks_%s.conf\" , prefix , server -> port ) ; FILE * f = fopen ( path , \"w+\" ) ; if ( f == NULL ) { if ( verbose ) { LOGE ( \"unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>config<S2SV_blank>file\" ) ; } ss_free ( path ) ; return ; } fprintf ( f , \"{\\\\n\" ) ; fprintf ( f , \"\\\\\"server_port\\\\\":%d,\\\\n\" , atoi ( server -> port ) ) ; <S2SV_StartBug> fprintf ( f , \"\\\\\"password\\\\\":\\\\\"%s\\\\\"\" , server -> password ) ; <S2SV_EndBug> if ( server -> fast_open [ 0 ] ) fprintf ( f , \",\\\\n\\\\\"fast_open\\\\\":<S2SV_blank>%s\" , server -> fast_open ) ; if ( server -> mode ) fprintf ( f , \",\\\\n\\\\\"mode\\\\\":\\\\\"%s\\\\\"\" , server -> mode ) ; <S2SV_StartBug> if ( server -> method ) fprintf ( f , \",\\\\n\\\\\"method\\\\\":\\\\\"%s\\\\\"\" , server -> method ) ; <S2SV_EndBug> if ( server -> plugin ) fprintf ( f , \",\\\\n\\\\\"plugin\\\\\":\\\\\"%s\\\\\"\" , server -> plugin ) ; if ( server -> plugin_opts ) fprintf ( f , \",\\\\n\\\\\"plugin_opts\\\\\":\\\\\"%s\\\\\"\" , server -> plugin_opts ) ; fprintf ( f , \"\\\\n}\\\\n\" ) ; fclose ( f ) ; ss_free ( path ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prefix , struct manager_ctx * manager , struct <S2SV_ModStart> server -> password ) ; if ( server -> method ) fprintf ( f , \",\\\\n\\\\\"method\\\\\":\\\\\"%s\\\\\"\" , server -> method ) ; else if ( manager -> method ) fprintf ( f , \",\\\\n\\\\\"method\\\\\":\\\\\"%s\\\\\"\" , manager -> method <S2SV_ModStart> ( server -> <S2SV_ModEnd> plugin ) fprintf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty ast_for_import_stmt ( struct compiling * c , const node * n ) { int lineno ; int col_offset ; int i ; asdl_seq * aliases ; REQ ( n , import_stmt ) ; lineno = LINENO ( n ) ; col_offset = n -> n_col_offset ; n = CHILD ( n , 0 ) ; if ( TYPE ( n ) == import_name ) { n = CHILD ( n , 1 ) ; REQ ( n , dotted_as_names ) ; aliases = _Py_asdl_seq_new ( ( NCH ( n ) + 1 ) / 2 , c -> c_arena ) ; if ( ! aliases ) return NULL ; for ( i = 0 ; i < NCH ( n ) ; i += 2 ) { alias_ty import_alias = alias_for_import_name ( c , CHILD ( n , i ) , 1 ) ; if ( ! import_alias ) return NULL ; asdl_seq_SET ( aliases , i / 2 , import_alias ) ; } return Import ( aliases , lineno , col_offset , n -> n_end_lineno , n -> n_end_col_offset , c -> c_arena ) ; } else if ( TYPE ( n ) == import_from ) { int n_children ; int idx , ndots = 0 ; const node * n_copy = n ; alias_ty mod = NULL ; identifier modname = NULL ; for ( idx = 1 ; idx < NCH ( n ) ; idx ++ ) { if ( TYPE ( CHILD ( n , idx ) ) == dotted_name ) { mod = alias_for_import_name ( c , CHILD ( n , idx ) , 0 ) ; if ( ! mod ) return NULL ; idx ++ ; break ; } else if ( TYPE ( CHILD ( n , idx ) ) == ELLIPSIS ) { ndots += 3 ; continue ; } else if ( TYPE ( CHILD ( n , idx ) ) != DOT ) { break ; } ndots ++ ; } idx ++ ; switch ( TYPE ( CHILD ( n , idx ) ) ) { case STAR : n = CHILD ( n , idx ) ; n_children = 1 ; break ; case LPAR : n = CHILD ( n , idx + 1 ) ; n_children = NCH ( n ) ; break ; case import_as_names : n = CHILD ( n , idx ) ; n_children = NCH ( n ) ; if ( n_children % 2 == 0 ) { ast_error ( c , n , \"trailing<S2SV_blank>comma<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>without\" \"<S2SV_blank>surrounding<S2SV_blank>parentheses\" ) ; return NULL ; } break ; default : ast_error ( c , n , \"Unexpected<S2SV_blank>node-type<S2SV_blank>in<S2SV_blank>from-import\" ) ; return NULL ; } aliases = _Py_asdl_seq_new ( ( n_children + 1 ) / 2 , c -> c_arena ) ; if ( ! aliases ) return NULL ; if ( TYPE ( n ) == STAR ) { alias_ty import_alias = alias_for_import_name ( c , n , 1 ) ; if ( ! import_alias ) return NULL ; asdl_seq_SET ( aliases , 0 , import_alias ) ; } else { for ( i = 0 ; i < NCH ( n ) ; i += 2 ) { alias_ty import_alias = alias_for_import_name ( c , CHILD ( n , i ) , 1 ) ; if ( ! import_alias ) return NULL ; asdl_seq_SET ( aliases , i / 2 , import_alias ) ; } } if ( mod != NULL ) modname = mod -> name ; return ImportFrom ( modname , aliases , ndots , lineno , col_offset , n_copy -> n_end_lineno , n_copy -> n_end_col_offset , c -> c_arena ) ; } PyErr_Format ( PyExc_SystemError , \"unknown<S2SV_blank>import<S2SV_blank>statement:<S2SV_blank>starts<S2SV_blank>with<S2SV_blank>command<S2SV_blank>\\'%s\\'\" , STR ( CHILD ( n , 0 ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9191\n\n```\nCWE-20 static int proc_sys_readdir ( struct file * file , struct dir_context * ctx ) { struct ctl_table_header * head = grab_header ( file_inode ( file ) ) ; struct ctl_table_header * h = NULL ; struct ctl_table * entry ; struct ctl_dir * ctl_dir ; unsigned long pos ; if ( IS_ERR ( head ) ) return PTR_ERR ( head ) ; ctl_dir = container_of ( head , struct ctl_dir , header ) ; if ( ! dir_emit_dots ( file , ctx ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> pos = 2 ; for ( first_entry ( ctl_dir , & h , & entry ) ; h ; next_entry ( & h , & entry ) ) { if ( ! scan ( h , entry , & pos , file , ctx ) ) { sysctl_head_finish ( h ) ; break ; } } <S2SV_StartBug> sysctl_head_finish ( head ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx ) ) goto out <S2SV_ModEnd> ; pos = <S2SV_ModStart> ; } } out :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5418\n\n```\nCWE-20 static int cleanup_pathname ( struct archive_write_disk * a ) { <S2SV_StartBug> char * dest , * src ; <S2SV_EndBug> char separator = '\\\\0' ; <S2SV_StartBug> dest = src = a -> name ; <S2SV_EndBug> <S2SV_StartBug> if ( * src == '\\\\0' ) { <S2SV_EndBug> <S2SV_StartBug> archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , <S2SV_EndBug> \"Invalid<S2SV_blank>empty<S2SV_blank>pathname\" ) ; return ( ARCHIVE_FAILED ) ; } <S2SV_StartBug> # if defined ( __CYGWIN__ ) <S2SV_EndBug> cleanup_pathname_win ( a ) ; # endif if ( * src == '/' ) { if ( a -> flags & ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Path<S2SV_blank>is<S2SV_blank>absolute\" ) ; <S2SV_StartBug> return ( ARCHIVE_FAILED ) ; <S2SV_EndBug> } separator = * src ++ ; } for ( ; ; ) { if ( src [ 0 ] == '\\\\0' ) { break ; } else if ( src [ 0 ] == '/' ) { src ++ ; continue ; } else if ( src [ 0 ] == '.' ) { if ( src [ 1 ] == '\\\\0' ) { break ; } else if ( src [ 1 ] == '/' ) { src += 2 ; continue ; } else if ( src [ 1 ] == '.' ) { if ( src [ 2 ] == '/' || src [ 2 ] == '\\\\0' ) { if ( a -> flags & ARCHIVE_EXTRACT_SECURE_NODOTDOT ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Path<S2SV_blank>contains<S2SV_blank>\\'..\\'\" ) ; return ( ARCHIVE_FAILED ) ; } } } } if ( separator ) * dest ++ = '/' ; while ( * src != '\\\\0' && * src != '/' ) { * dest ++ = * src ++ ; } if ( * src == '\\\\0' ) break ; separator = * src ++ ; } if ( dest == a -> name ) { if ( separator ) * dest ++ = '/' ; else * dest ++ = '.' ; } * dest = '\\\\0' ; return ( ARCHIVE_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> a ) { struct archive_string error_string ; int error_number ; int rc ; archive_string_init ( & error_string ) ; rc = cleanup_pathname_fsobj ( <S2SV_ModEnd> a -> name <S2SV_ModStart> a -> name , & error_number , & error_string , a -> flags ) <S2SV_ModStart> ; if ( rc != ARCHIVE_OK <S2SV_ModEnd> ) { archive_set_error <S2SV_ModStart> -> archive , error_number , \"%s\" , error_string . s <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } archive_string_free ( & error_string <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return rc <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3820\n\n```\nCWE-119 WORD32 ih264d_start_of_pic ( dec_struct_t * ps_dec , WORD32 i4_poc , pocstruct_t * ps_temp_poc , UWORD16 u2_frame_num , dec_pic_params_t * ps_pps ) { pocstruct_t * ps_prev_poc = & ps_dec -> s_cur_pic_poc ; pocstruct_t * ps_cur_poc = ps_temp_poc ; pic_buffer_t * pic_buf ; ivd_video_decode_op_t * ps_dec_output = ( ivd_video_decode_op_t * ) ps_dec -> pv_dec_out ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; dec_seq_params_t * ps_seq = ps_pps -> ps_sps ; UWORD8 u1_bottom_field_flag = ps_cur_slice -> u1_bottom_field_flag ; UWORD8 u1_field_pic_flag = ps_cur_slice -> u1_field_pic_flag ; high_profile_tools_t s_high_profile ; WORD32 ret ; H264_MUTEX_LOCK ( & ps_dec -> process_disp_mutex ) ; ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] ; ps_prev_poc -> u1_bot_field = ps_dec -> ps_cur_slice -> u1_bottom_field_flag ; ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst ; ps_prev_poc -> u2_frame_num = u2_frame_num ; ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> i1_next_ctxt_idx = 0 ; ps_dec -> u4_nmb_deblk = 0 ; if ( ps_dec -> u4_num_cores == 1 ) ps_dec -> u4_nmb_deblk = 1 ; if ( ps_seq -> u1_mb_aff_flag == 1 ) { ps_dec -> u4_nmb_deblk = 0 ; if ( ps_dec -> u4_num_cores > 2 ) ps_dec -> u4_num_cores = 2 ; } ps_dec -> u4_use_intrapred_line_copy = 0 ; if ( ps_seq -> u1_mb_aff_flag == 0 ) { ps_dec -> u4_use_intrapred_line_copy = 1 ; } ps_dec -> u4_app_disable_deblk_frm = 0 ; if ( ps_dec -> i4_degrade_type && ps_dec -> i4_degrade_pics ) { WORD32 degrade_pic ; ps_dec -> i4_degrade_pic_cnt ++ ; degrade_pic = 0 ; switch ( ps_dec -> i4_degrade_pics ) { case 4 : { degrade_pic = 1 ; break ; } case 3 : { if ( ps_cur_slice -> u1_slice_type != I_SLICE ) degrade_pic = 1 ; break ; } case 2 : { if ( ( ps_cur_slice -> u1_slice_type != I_SLICE ) && ( ps_dec -> i4_degrade_pic_cnt != ps_dec -> i4_nondegrade_interval ) ) degrade_pic = 1 ; break ; } case 1 : { if ( 0 == ps_cur_slice -> u1_nal_ref_idc ) { degrade_pic = 1 ; } break ; } } if ( degrade_pic ) { if ( ps_dec -> i4_degrade_type & 0x2 ) ps_dec -> u4_app_disable_deblk_frm = 1 ; if ( 0 == ps_cur_slice -> u1_nal_ref_idc ) { if ( ps_dec -> i4_degrade_type & 0x4 ) ps_dec -> i4_mv_frac_mask = 0 ; if ( ps_dec -> i4_degrade_type & 0x8 ) ps_dec -> i4_mv_frac_mask = 0 ; } } else ps_dec -> i4_degrade_pic_cnt = 0 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_dec -> u1_sl_typ_5_9 && ( ( ps_cur_slice -> u1_slice_type == I_SLICE ) || ( ps_cur_slice -> u1_slice_type == SI_SLICE ) ) ) ps_err -> u1_cur_pic_type = PIC_TYPE_I ; else ps_err -> u1_cur_pic_type = PIC_TYPE_UNKNOWN ; if ( ps_err -> u1_pic_aud_i == PIC_TYPE_I ) { ps_err -> u1_cur_pic_type = PIC_TYPE_I ; ps_err -> u1_pic_aud_i = PIC_TYPE_UNKNOWN ; } if ( ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { if ( ps_err -> u1_err_flag ) ih264d_reset_ref_bufs ( ps_dec -> ps_dpb_mgr ) ; ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } if ( ps_dec -> u1_init_dec_flag && ps_dec -> s_prev_seq_params . u1_eoseq_pending ) { WORD32 j ; for ( j = 0 ; j < MAX_DISP_BUFS_NEW ; j ++ ) { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , ps_dec -> au1_pic_buf_id_mv_buf_id_map [ j ] , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_IO ) ; } ps_dec -> u1_second_field = 0 ; ps_dec -> i4_cur_display_seq = 0 ; ps_dec -> s_prev_seq_params . u1_eoseq_pending = 0 ; } ret = ih264d_init_pic ( ps_dec , u2_frame_num , i4_poc , ps_pps ) ; if ( ret != OK ) return ret ; ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_pic_tu_coeff_data ; ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_pic_tu_coeff_data ; ps_dec -> ps_nmb_info = ps_dec -> ps_frm_mb_info ; if ( ps_dec -> u1_separate_parse ) { UWORD16 pic_wd ; UWORD16 pic_ht ; UWORD32 num_mbs ; pic_wd = ps_dec -> u2_pic_wd ; pic_ht = ps_dec -> u2_pic_ht ; num_mbs = ( pic_wd * pic_ht ) >> 8 ; if ( ps_dec -> pu1_dec_mb_map ) { memset ( ( void * ) ps_dec -> pu1_dec_mb_map , 0 , num_mbs ) ; } if ( ps_dec -> pu1_recon_mb_map ) { memset ( ( void * ) ps_dec -> pu1_recon_mb_map , 0 , num_mbs ) ; } if ( ps_dec -> pu2_slice_num_map ) { memset ( ( void * ) ps_dec -> pu2_slice_num_map , 0 , ( num_mbs * sizeof ( UWORD16 ) ) ) ; } } ps_dec -> ps_parse_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; ps_dec -> ps_decode_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; ps_dec -> ps_computebs_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; <S2SV_StartBug> ps_dec -> s_high_profile . u1_scaling_present = 0 ; <S2SV_EndBug> ps_dec -> s_high_profile . u1_transform8x8_present = 0 ; if ( 1 == ps_dec -> u4_share_disp_buf ) { UWORD32 i ; for ( i = 0 ; i < MAX_DISP_BUFS_NEW ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) continue ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , i , BUF_MGR_IO ) ; ps_dec -> u4_disp_buf_to_be_freed [ i ] = 0 ; ps_dec -> u4_disp_buf_mapping [ i ] = 0 ; } } if ( ! ( u1_field_pic_flag && 0 != ps_dec -> u1_top_bottom_decoded ) ) { pic_buffer_t * ps_cur_pic ; WORD32 cur_pic_buf_id , cur_mv_buf_id ; col_mv_buf_t * ps_col_mv ; while ( 1 ) { ps_cur_pic = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & cur_pic_buf_id ) ; if ( ps_cur_pic == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_PICBUF_T ; return ERROR_UNAVAIL_PICBUF_T ; } if ( 0 == ps_dec -> u4_disp_buf_mapping [ cur_pic_buf_id ] ) { break ; } } ps_col_mv = ( col_mv_buf_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , & cur_mv_buf_id ) ; if ( ps_col_mv == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_MVBUF_T ; return ERROR_UNAVAIL_MVBUF_T ; } ps_dec -> ps_cur_pic = ps_cur_pic ; ps_dec -> u1_pic_buf_id = cur_pic_buf_id ; ps_cur_pic -> u4_ts = ps_dec -> u4_ts ; ps_cur_pic -> u1_mv_buf_id = cur_mv_buf_id ; ps_dec -> au1_pic_buf_id_mv_buf_id_map [ cur_pic_buf_id ] = cur_mv_buf_id ; ps_cur_pic -> pu1_col_zero_flag = ( UWORD8 * ) ps_col_mv -> pv_col_zero_flag ; ps_cur_pic -> ps_mv = ( mv_pred_t * ) ps_col_mv -> pv_mv ; ps_dec -> au1_pic_buf_ref_flag [ cur_pic_buf_id ] = 0 ; if ( ps_dec -> u1_first_slice_in_stream ) { ps_dec -> ps_ref_pic_buf_lx [ 0 ] = ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] ; * ( ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] [ 0 ] ) = * ps_cur_pic ; } if ( ! ps_dec -> ps_cur_pic ) { WORD32 j ; H264_DEC_DEBUG_PRINT ( \"-------<S2SV_blank>Display<S2SV_blank>Buffers<S2SV_blank>Reset<S2SV_blank>--------\\\\n\" ) ; for ( j = 0 ; j < MAX_DISP_BUFS_NEW ; j ++ ) { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , ps_dec -> au1_pic_buf_id_mv_buf_id_map [ j ] , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_IO ) ; } ps_dec -> i4_cur_display_seq = 0 ; ps_dec -> i4_prev_max_display_seq = 0 ; ps_dec -> i4_max_poc = 0 ; ps_cur_pic = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & cur_pic_buf_id ) ; if ( ps_cur_pic == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_PICBUF_T ; return ERROR_UNAVAIL_PICBUF_T ; } ps_col_mv = ( col_mv_buf_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , & cur_mv_buf_id ) ; if ( ps_col_mv == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_MVBUF_T ; return ERROR_UNAVAIL_MVBUF_T ; } ps_dec -> ps_cur_pic = ps_cur_pic ; ps_dec -> u1_pic_buf_id = cur_pic_buf_id ; ps_cur_pic -> u4_ts = ps_dec -> u4_ts ; ps_dec -> apv_buf_id_pic_buf_map [ cur_pic_buf_id ] = ( void * ) ps_cur_pic ; ps_cur_pic -> u1_mv_buf_id = cur_mv_buf_id ; ps_dec -> au1_pic_buf_id_mv_buf_id_map [ cur_pic_buf_id ] = cur_mv_buf_id ; ps_cur_pic -> pu1_col_zero_flag = ( UWORD8 * ) ps_col_mv -> pv_col_zero_flag ; ps_cur_pic -> ps_mv = ( mv_pred_t * ) ps_col_mv -> pv_mv ; ps_dec -> au1_pic_buf_ref_flag [ cur_pic_buf_id ] = 0 ; } ps_dec -> ps_cur_pic -> u1_picturetype = u1_field_pic_flag ; ps_dec -> ps_cur_pic -> u4_pack_slc_typ = SKIP_NONE ; H264_DEC_DEBUG_PRINT ( \"got<S2SV_blank>a<S2SV_blank>buffer\\\\n\" ) ; } else { H264_DEC_DEBUG_PRINT ( \"did<S2SV_blank>not<S2SV_blank>get<S2SV_blank>a<S2SV_blank>buffer\\\\n\" ) ; } ps_dec -> u4_pic_buf_got = 1 ; ps_dec -> ps_cur_pic -> i4_poc = i4_poc ; ps_dec -> ps_cur_pic -> i4_frame_num = u2_frame_num ; ps_dec -> ps_cur_pic -> i4_pic_num = u2_frame_num ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = ps_pps -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = ps_pps -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_avg_poc = ps_pps -> i4_avg_poc ; ps_dec -> ps_cur_pic -> u4_time_stamp = ps_dec -> u4_pts ; ps_dec -> s_cur_pic = * ( ps_dec -> ps_cur_pic ) ; if ( u1_field_pic_flag && u1_bottom_field_flag ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; ps_dec -> s_cur_pic . pu1_buf1 += ps_dec -> s_cur_pic . u2_frm_wd_y ; ps_dec -> s_cur_pic . pu1_buf2 += ps_dec -> s_cur_pic . u2_frm_wd_uv ; ps_dec -> s_cur_pic . pu1_buf3 += ps_dec -> s_cur_pic . u2_frm_wd_uv ; ps_dec -> s_cur_pic . ps_mv += ( ( ps_dec -> u2_pic_ht * ps_dec -> u2_pic_wd ) >> 5 ) ; ps_dec -> s_cur_pic . pu1_col_zero_flag += ( ( ps_dec -> u2_pic_ht * ps_dec -> u2_pic_wd ) >> 5 ) ; ps_dec -> ps_cur_pic -> u1_picturetype |= BOT_FLD ; i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } ps_cur_slice -> u1_mbaff_frame_flag = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; ps_dec -> ps_cur_pic -> u1_picturetype |= ( ps_cur_slice -> u1_mbaff_frame_flag << 2 ) ; ps_dec -> ps_cur_mb_row = ps_dec -> ps_nbr_mb_row ; ps_dec -> ps_cur_mb_row += 2 ; ps_dec -> ps_top_mb_row = ps_dec -> ps_nbr_mb_row ; ps_dec -> ps_top_mb_row += ( ( ps_dec -> u2_frm_wd_in_mbs + 2 ) << ( 1 - ps_dec -> ps_cur_sps -> u1_frame_mbs_only_flag ) ) ; ps_dec -> ps_top_mb_row += 2 ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> ps_mv_top = ps_dec -> ps_mv_top_p [ 0 ] ; ps_dec -> u1_mv_top_p = 0 ; ps_dec -> u1_mb_idx = 0 ; ps_dec -> ps_mv_left = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> i4_submb_ofst = - ( SUB_BLK_SIZE ) ; ps_dec -> u4_pred_info_idx = 0 ; ps_dec -> u4_pred_info_pkd_idx = 0 ; ps_dec -> u4_dma_buf_idx = 0 ; ps_dec -> ps_mv = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> ps_mv_bank_cur = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> pu1_col_zero_flag = ps_dec -> s_cur_pic . pu1_col_zero_flag ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> i2_prev_slice_mbx = - 1 ; ps_dec -> i2_prev_slice_mby = 0 ; ps_dec -> u2_mv_2mb [ 0 ] = 0 ; ps_dec -> u2_mv_2mb [ 1 ] = 0 ; ps_dec -> u1_last_pic_not_decoded = 0 ; <S2SV_StartBug> ps_dec -> u2_cur_slice_num = 0 ; <S2SV_EndBug> ps_dec -> u2_cur_slice_num_dec_thread = 0 ; ps_dec -> u2_cur_slice_num_bs = 0 ; ps_dec -> u4_intra_pred_line_ofst = 0 ; ps_dec -> pu1_cur_y_intra_pred_line = ps_dec -> pu1_y_intra_pred_line ; ps_dec -> pu1_cur_u_intra_pred_line = ps_dec -> pu1_u_intra_pred_line ; ps_dec -> pu1_cur_v_intra_pred_line = ps_dec -> pu1_v_intra_pred_line ; ps_dec -> pu1_cur_y_intra_pred_line_base = ps_dec -> pu1_y_intra_pred_line ; ps_dec -> pu1_cur_u_intra_pred_line_base = ps_dec -> pu1_u_intra_pred_line ; ps_dec -> pu1_cur_v_intra_pred_line_base = ps_dec -> pu1_v_intra_pred_line ; ps_dec -> pu1_prev_y_intra_pred_line = ps_dec -> pu1_y_intra_pred_line + ( ps_dec -> u2_frm_wd_in_mbs * MB_SIZE ) ; ps_dec -> pu1_prev_u_intra_pred_line = ps_dec -> pu1_u_intra_pred_line + ps_dec -> u2_frm_wd_in_mbs * BLK8x8SIZE * YUV420SP_FACTOR ; ps_dec -> pu1_prev_v_intra_pred_line = ps_dec -> pu1_v_intra_pred_line + ps_dec -> u2_frm_wd_in_mbs * BLK8x8SIZE ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; { if ( ps_cur_slice -> u1_mbaff_frame_flag ) { ps_dec -> pf_compute_bs = ih264d_compute_bs_mbaff ; ps_dec -> pf_mvpred = ih264d_mvpred_mbaff ; } else { ps_dec -> pf_compute_bs = ih264d_compute_bs_non_mbaff ; ps_dec -> u1_cur_mb_fld_dec_flag = ps_cur_slice -> u1_field_pic_flag ; } } { UWORD8 u1_field_pic_flag = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; UWORD8 u1_mbaff = ps_cur_slice -> u1_mbaff_frame_flag ; UWORD8 uc_lastmbs = ( ( ( ps_dec -> u2_pic_wd ) >> 4 ) % ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) ) ; UWORD16 ui16_lastmbs_widthY = ( uc_lastmbs ? ( uc_lastmbs << 4 ) : ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) << 4 ) ) ; UWORD16 ui16_lastmbs_widthUV = uc_lastmbs ? ( uc_lastmbs << 3 ) : ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) << 3 ) ; ps_dec -> s_tran_addrecon . pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_dec -> s_tran_addrecon . pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_dec -> s_tran_addrecon . pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_dec -> s_tran_addrecon . u2_frm_wd_y = ps_dec -> u2_frm_wd_y << u1_field_pic_flag ; ps_dec -> s_tran_addrecon . u2_frm_wd_uv = ps_dec -> u2_frm_wd_uv << u1_field_pic_flag ; if ( u1_field_pic_flag ) { ui16_lastmbs_widthY += ps_dec -> u2_frm_wd_y ; ui16_lastmbs_widthUV += ps_dec -> u2_frm_wd_uv ; } ps_dec -> s_tran_addrecon . u4_inc_y [ 0 ] = ( ( ps_dec -> u1_recon_mb_grp << 4 ) >> u1_mbaff ) ; ps_dec -> s_tran_addrecon . u4_inc_uv [ 0 ] = ( ( ps_dec -> u1_recon_mb_grp << 4 ) >> u1_mbaff ) ; ps_dec -> s_tran_addrecon . u4_inc_y [ 1 ] = ( ui16_lastmbs_widthY + ( PAD_LEN_Y_H << 1 ) + ps_dec -> s_tran_addrecon . u2_frm_wd_y * ( ( 15 << u1_mbaff ) + u1_mbaff ) ) ; ps_dec -> s_tran_addrecon . u4_inc_uv [ 1 ] = ( ui16_lastmbs_widthUV + ( PAD_LEN_UV_H << 2 ) + ps_dec -> s_tran_addrecon . u2_frm_wd_uv * ( ( 15 << u1_mbaff ) + u1_mbaff ) ) ; ih264d_assign_pic_num ( ps_dec ) ; ps_dec -> s_tran_addrecon . u2_mv_top_left_inc = ( ps_dec -> u1_recon_mb_grp << 2 ) - 1 - ( u1_mbaff << 2 ) ; ps_dec -> s_tran_addrecon . u2_mv_left_inc = ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) - 1 ) << ( 4 + u1_mbaff ) ; } if ( ps_seq -> u1_profile_idc == HIGH_PROFILE_IDC ) { if ( ( ps_seq -> i4_seq_scaling_matrix_present_flag ) || ( ps_pps -> i4_pic_scaling_matrix_present_flag ) ) { ih264d_form_scaling_matrix_picture ( ps_seq , ps_pps , ps_dec ) ; ps_dec -> s_high_profile . u1_scaling_present = 1 ; } else { ih264d_form_default_scaling_matrix ( ps_dec ) ; } if ( ps_pps -> i4_transform_8x8_mode_flag ) { ps_dec -> s_high_profile . u1_transform8x8_present = 1 ; } } else { ih264d_form_default_scaling_matrix ( ps_dec ) ; } ps_dec -> s_high_profile . u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; ps_dec -> s_high_profile . s_cavlc_ctxt = ps_dec -> s_cavlc_ctxt ; ps_dec -> i1_recon_in_thread3_flag = 1 ; ps_dec -> ps_frame_buf_ip_recon = & ps_dec -> s_tran_addrecon ; if ( ps_dec -> u1_separate_parse ) { memcpy ( & ps_dec -> s_tran_addrecon_parse , & ps_dec -> s_tran_addrecon , sizeof ( tfr_ctxt_t ) ) ; if ( ps_dec -> u4_num_cores >= 3 && ps_dec -> i1_recon_in_thread3_flag ) { memcpy ( & ps_dec -> s_tran_iprecon , & ps_dec -> s_tran_addrecon , sizeof ( tfr_ctxt_t ) ) ; ps_dec -> ps_frame_buf_ip_recon = & ps_dec -> s_tran_iprecon ; } } ih264d_init_deblk_tfr_ctxt ( ps_dec , & ( ps_dec -> s_pad_mgr ) , & ( ps_dec -> s_tran_addrecon ) , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; ps_dec -> ps_cur_deblk_mb = ps_dec -> ps_deblk_pic ; ps_dec -> u4_cur_deblk_mb_num = 0 ; ps_dec -> u4_deblk_mb_x = 0 ; ps_dec -> u4_deblk_mb_y = 0 ; ps_dec -> pu4_wt_ofsts = ps_dec -> pu4_wts_ofsts_mat ; H264_MUTEX_UNLOCK ( & ps_dec -> process_disp_mutex ) ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> <S2SV_ModStart> ; ps_dec -> <S2SV_ModEnd> u2_cur_slice_num_dec_thread = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 <S2SV_StartBug> struct mb_cache * <S2SV_EndBug> <S2SV_StartBug> ext4_xattr_create_cache ( char * name ) <S2SV_EndBug> { <S2SV_StartBug> return mb_cache_create ( name , HASH_BUCKET_BITS ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> struct mb2_cache <S2SV_ModEnd> * ext4_xattr_create_cache ( <S2SV_ModStart> * ext4_xattr_create_cache ( void <S2SV_ModEnd> ) { return <S2SV_ModStart> ) { return mb2_cache_create ( <S2SV_ModEnd> HASH_BUCKET_BITS ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1490\n\n```\nCWE-772 static inline rsRetVal processBatchMultiRuleset ( batch_t * pBatch ) { ruleset_t * currRuleset ; batch_t snglRuleBatch ; int i ; int iStart ; int iNew ; <S2SV_StartBug> DEFiRet ; <S2SV_EndBug> CHKiRet ( batchInit ( & snglRuleBatch , pBatch -> nElem ) ) ; snglRuleBatch . pbShutdownImmediate = pBatch -> pbShutdownImmediate ; <S2SV_StartBug> while ( 1 ) { <S2SV_EndBug> for ( iStart = 0 ; iStart < pBatch -> nElem && pBatch -> pElem [ iStart ] . state == BATCH_STATE_DISC ; ++ iStart ) ; if ( iStart == pBatch -> nElem ) FINALIZE ; currRuleset = batchElemGetRuleset ( pBatch , iStart ) ; iNew = 0 ; for ( i = iStart ; i < pBatch -> nElem ; ++ i ) { if ( batchElemGetRuleset ( pBatch , i ) == currRuleset ) { batchCopyElem ( & ( snglRuleBatch . pElem [ iNew ++ ] ) , & ( pBatch -> pElem [ i ] ) ) ; pBatch -> pElem [ i ] . state = BATCH_STATE_DISC ; } } snglRuleBatch . nElem = iNew ; batchSetSingleRuleset ( & snglRuleBatch , 1 ) ; processBatch ( & snglRuleBatch ) ; } batchFree ( & snglRuleBatch ) ; finalize_it : RETiRet ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int iNew ; int bHaveUnprocessed ; DEFiRet ; do { bHaveUnprocessed = 0 ; for ( iStart = 0 ; iStart < pBatch -> nElem && pBatch -> pElem [ iStart ] . state == BATCH_STATE_DISC ; ++ iStart ) ; if ( iStart == pBatch -> nElem ) break ; <S2SV_ModEnd> CHKiRet ( batchInit <S2SV_ModStart> -> pbShutdownImmediate ; currRuleset = batchElemGetRuleset ( pBatch , iStart ) ; iNew = 0 ; for ( i = iStart ; i < pBatch -> nElem ; ++ i ) { if ( batchElemGetRuleset ( pBatch , i ) == currRuleset ) { snglRuleBatch . pElem [ iNew ] . pUsrp = pBatch -> pElem [ i ] . pUsrp ; snglRuleBatch . pElem [ iNew ] . state = pBatch -> pElem [ i ] . state ; ++ iNew ; pBatch -> pElem [ i ] . state = BATCH_STATE_DISC ; } else { bHaveUnprocessed = 1 ; } } snglRuleBatch . nElem = iNew ; batchSetSingleRuleset ( & snglRuleBatch , 1 ) ; processBatch ( & snglRuleBatch ) ; batchFree ( & snglRuleBatch ) ; } while ( bHaveUnprocessed == 1 <S2SV_ModEnd> ) ; finalize_it\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8689\n\n```\nCWE-125 static int read_Header ( struct archive_read * a , struct _7z_header_info * h , int check_header_id ) { struct _7zip * zip = ( struct _7zip * ) a -> format -> data ; const unsigned char * p ; struct _7z_folder * folders ; struct _7z_stream_info * si = & ( zip -> si ) ; struct _7zip_entry * entries ; uint32_t folderIndex , indexInFolder ; unsigned i ; int eindex , empty_streams , sindex ; if ( check_header_id ) { if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; if ( * p != kHeader ) return ( - 1 ) ; } if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; if ( * p == kArchiveProperties ) { for ( ; ; ) { uint64_t size ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; if ( * p == 0 ) break ; if ( parse_7zip_uint64 ( a , & size ) < 0 ) return ( - 1 ) ; } if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; } if ( * p == kMainStreamsInfo ) { if ( read_StreamsInfo ( a , & ( zip -> si ) ) < 0 ) return ( - 1 ) ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; } if ( * p == kEnd ) return ( 0 ) ; if ( * p != kFilesInfo ) return ( - 1 ) ; if ( parse_7zip_uint64 ( a , & ( zip -> numFiles ) ) < 0 ) return ( - 1 ) ; if ( UMAX_ENTRY < zip -> numFiles ) return ( - 1 ) ; zip -> entries = calloc ( ( size_t ) zip -> numFiles , sizeof ( * zip -> entries ) ) ; if ( zip -> entries == NULL ) return ( - 1 ) ; entries = zip -> entries ; empty_streams = 0 ; for ( ; ; ) { int type ; uint64_t size ; size_t ll ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; type = * p ; if ( type == kEnd ) break ; if ( parse_7zip_uint64 ( a , & size ) < 0 ) return ( - 1 ) ; if ( zip -> header_bytes_remaining < size ) return ( - 1 ) ; ll = ( size_t ) size ; switch ( type ) { case kEmptyStream : <S2SV_StartBug> h -> emptyStreamBools = calloc ( ( size_t ) zip -> numFiles , <S2SV_EndBug> sizeof ( * h -> emptyStreamBools ) ) ; if ( h -> emptyStreamBools == NULL ) return ( - 1 ) ; if ( read_Bools ( a , h -> emptyStreamBools , ( size_t ) zip -> numFiles ) < 0 ) return ( - 1 ) ; empty_streams = 0 ; for ( i = 0 ; i < zip -> numFiles ; i ++ ) { if ( h -> emptyStreamBools [ i ] ) empty_streams ++ ; } break ; case kEmptyFile : if ( empty_streams <= 0 ) { if ( header_bytes ( a , ll ) == NULL ) return ( - 1 ) ; break ; } <S2SV_StartBug> h -> emptyFileBools = calloc ( empty_streams , <S2SV_EndBug> sizeof ( * h -> emptyFileBools ) ) ; if ( h -> emptyFileBools == NULL ) return ( - 1 ) ; if ( read_Bools ( a , h -> emptyFileBools , empty_streams ) < 0 ) return ( - 1 ) ; break ; case kAnti : if ( empty_streams <= 0 ) { if ( header_bytes ( a , ll ) == NULL ) return ( - 1 ) ; break ; } <S2SV_StartBug> h -> antiBools = calloc ( empty_streams , <S2SV_EndBug> sizeof ( * h -> antiBools ) ) ; if ( h -> antiBools == NULL ) return ( - 1 ) ; if ( read_Bools ( a , h -> antiBools , empty_streams ) < 0 ) return ( - 1 ) ; break ; case kCTime : case kATime : case kMTime : if ( read_Times ( a , h , type ) < 0 ) return ( - 1 ) ; break ; case kName : { unsigned char * np ; size_t nl , nb ; if ( ( p = header_bytes ( a , 1 ) ) == NULL ) return ( - 1 ) ; ll -- ; <S2SV_StartBug> if ( ( ll & 1 ) || ll < zip -> numFiles * 4 ) <S2SV_EndBug> return ( - 1 ) ; zip -> entry_names = malloc ( ll ) ; if ( zip -> entry_names == NULL ) return ( - 1 ) ; np = zip -> entry_names ; nb = ll ; while ( nb ) { size_t b ; if ( nb > UBUFF_SIZE ) b = UBUFF_SIZE ; else b = nb ; if ( ( p = header_bytes ( a , b ) ) == NULL ) return ( - 1 ) ; memcpy ( np , p , b ) ; np += b ; nb -= b ; } np = zip -> entry_names ; nl = ll ; for ( i = 0 ; i < zip -> numFiles ; i ++ ) { entries [ i ] . utf16name = np ; # if defined ( _WIN32 ) && ! defined ( __CYGWIN__ ) && defined ( _DEBUG ) entries [ i ] . wname = ( wchar_t * ) np ; # endif while ( nl >= 2 && ( np [ 0 ] || np [ 1 ] ) ) { np += 2 ; nl -= 2 ; } if ( nl < 2 ) return ( - 1 ) ; entries [ i ] . name_len = np - entries [ i ] . utf16name ; np += 2 ; nl -= 2 ; } break ; } case kAttributes : { int allAreDefined ; if ( ( p = header_bytes ( a , 2 ) ) == NULL ) return ( - 1 ) ; allAreDefined = * p ; <S2SV_StartBug> h -> attrBools = calloc ( ( size_t ) zip -> numFiles , <S2SV_EndBug> sizeof ( * h -> attrBools ) ) ; if ( h -> attrBools == NULL ) return ( - 1 ) ; if ( allAreDefined ) memset ( h -> attrBools , 1 , ( size_t ) zip -> numFiles ) ; else { if ( read_Bools ( a , h -> attrBools , ( size_t ) zip -> numFiles ) < 0 ) return ( - 1 ) ; } for ( i = 0 ; i < zip -> numFiles ; i ++ ) { if ( h -> attrBools [ i ] ) { if ( ( p = header_bytes ( a , 4 ) ) == NULL ) return ( - 1 ) ; entries [ i ] . attr = archive_le32dec ( p ) ; } } break ; } case kDummy : if ( ll == 0 ) break ; default : if ( header_bytes ( a , ll ) == NULL ) return ( - 1 ) ; break ; } } folders = si -> ci . folders ; eindex = sindex = 0 ; folderIndex = indexInFolder = 0 ; for ( i = 0 ; i < zip -> numFiles ; i ++ ) { if ( h -> emptyStreamBools == NULL || h -> emptyStreamBools [ i ] == 0 ) entries [ i ] . flg |= HAS_STREAM ; entries [ i ] . mode = entries [ i ] . attr >> 16 ; if ( entries [ i ] . flg & HAS_STREAM ) { if ( ( size_t ) sindex >= si -> ss . unpack_streams ) return ( - 1 ) ; if ( entries [ i ] . mode == 0 ) entries [ i ] . mode = AE_IFREG | 0666 ; if ( si -> ss . digestsDefined [ sindex ] ) entries [ i ] . flg |= CRC32_IS_SET ; entries [ i ] . ssIndex = sindex ; sindex ++ ; } else { int dir ; if ( h -> emptyFileBools == NULL ) dir = 1 ; else { if ( h -> emptyFileBools [ eindex ] ) dir = 0 ; else dir = 1 ; eindex ++ ; } if ( entries [ i ] . mode == 0 ) { if ( dir ) entries [ i ] . mode = AE_IFDIR | 0777 ; else entries [ i ] . mode = AE_IFREG | 0666 ; } else if ( dir && ( entries [ i ] . mode & AE_IFMT ) != AE_IFDIR ) { entries [ i ] . mode &= ~ AE_IFMT ; entries [ i ] . mode |= AE_IFDIR ; } if ( ( entries [ i ] . mode & AE_IFMT ) == AE_IFDIR && entries [ i ] . name_len >= 2 && ( entries [ i ] . utf16name [ entries [ i ] . name_len - 2 ] != '/' || entries [ i ] . utf16name [ entries [ i ] . name_len - 1 ] != 0 ) ) { entries [ i ] . utf16name [ entries [ i ] . name_len ] = '/' ; entries [ i ] . utf16name [ entries [ i ] . name_len + 1 ] = 0 ; entries [ i ] . name_len += 2 ; } entries [ i ] . ssIndex = - 1 ; } if ( entries [ i ] . attr & 0x01 ) entries [ i ] . mode &= ~ 0222 ; if ( ( entries [ i ] . flg & HAS_STREAM ) == 0 && indexInFolder == 0 ) { entries [ i ] . folderIndex = - 1 ; continue ; } if ( indexInFolder == 0 ) { for ( ; ; ) { if ( folderIndex >= si -> ci . numFolders ) return ( - 1 ) ; if ( folders [ folderIndex ] . numUnpackStreams ) break ; folderIndex ++ ; } } entries [ i ] . folderIndex = folderIndex ; if ( ( entries [ i ] . flg & HAS_STREAM ) == 0 ) continue ; indexInFolder ++ ; if ( indexInFolder >= folders [ folderIndex ] . numUnpackStreams ) { folderIndex ++ ; indexInFolder = 0 ; } } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case kEmptyStream : if ( h -> emptyStreamBools != NULL ) return ( - 1 ) ; <S2SV_ModStart> break ; } if ( h -> emptyFileBools != NULL ) return ( - 1 ) ; <S2SV_ModStart> break ; } if ( h -> antiBools != NULL ) return ( - 1 ) ; <S2SV_ModStart> numFiles * 4 ) return ( - 1 ) ; if ( zip -> entry_names != NULL <S2SV_ModStart> * p ; if ( h -> attrBools != NULL ) return ( - 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 GPLOT * gplotRead ( const char * filename ) { <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> char * rootname , * title , * xlabel , * ylabel , * ignores ; l_int32 outformat , ret , version , ignore ; FILE * fp ; GPLOT * gplot ; PROCNAME ( \"gplotRead\" ) ; if ( ! filename ) return ( GPLOT * ) ERROR_PTR ( \"filename<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( ( fp = fopenReadStream ( filename ) ) == NULL ) return ( GPLOT * ) ERROR_PTR ( \"stream<S2SV_blank>not<S2SV_blank>opened\" , procName , NULL ) ; ret = fscanf ( fp , \"Gplot<S2SV_blank>Version<S2SV_blank>%d\\\\n\" , & version ) ; if ( ret != 1 ) { fclose ( fp ) ; return ( GPLOT * ) ERROR_PTR ( \"not<S2SV_blank>a<S2SV_blank>gplot<S2SV_blank>file\" , procName , NULL ) ; } if ( version != GPLOT_VERSION_NUMBER ) { fclose ( fp ) ; return ( GPLOT * ) ERROR_PTR ( \"invalid<S2SV_blank>gplot<S2SV_blank>version\" , procName , NULL ) ; } <S2SV_StartBug> ignore = fscanf ( fp , \"Rootname:<S2SV_blank>%s\\\\n\" , buf ) ; <S2SV_EndBug> rootname = stringNew ( buf ) ; ignore = fscanf ( fp , \"Output<S2SV_blank>format:<S2SV_blank>%d\\\\n\" , & outformat ) ; <S2SV_StartBug> ignores = fgets ( buf , L_BUF_SIZE , fp ) ; <S2SV_EndBug> title = stringNew ( buf + 7 ) ; title [ strlen ( title ) - 1 ] = '\\\\0' ; <S2SV_StartBug> ignores = fgets ( buf , L_BUF_SIZE , fp ) ; <S2SV_EndBug> xlabel = stringNew ( buf + 14 ) ; xlabel [ strlen ( xlabel ) - 1 ] = '\\\\0' ; <S2SV_StartBug> ignores = fgets ( buf , L_BUF_SIZE , fp ) ; <S2SV_EndBug> ylabel = stringNew ( buf + 14 ) ; ylabel [ strlen ( ylabel ) - 1 ] = '\\\\0' ; gplot = gplotCreate ( rootname , outformat , title , xlabel , ylabel ) ; LEPT_FREE ( rootname ) ; LEPT_FREE ( title ) ; LEPT_FREE ( xlabel ) ; LEPT_FREE ( ylabel ) ; if ( ! gplot ) { fclose ( fp ) ; return ( GPLOT * ) ERROR_PTR ( \"gplot<S2SV_blank>not<S2SV_blank>made\" , procName , NULL ) ; } sarrayDestroy ( & gplot -> cmddata ) ; sarrayDestroy ( & gplot -> datanames ) ; sarrayDestroy ( & gplot -> plotdata ) ; sarrayDestroy ( & gplot -> plottitles ) ; numaDestroy ( & gplot -> plotstyles ) ; <S2SV_StartBug> ignore = fscanf ( fp , \"Commandfile<S2SV_blank>name:<S2SV_blank>%s\\\\n\" , buf ) ; <S2SV_EndBug> stringReplace ( & gplot -> cmdname , buf ) ; ignore = fscanf ( fp , \"\\\\nCommandfile<S2SV_blank>data:\" ) ; gplot -> cmddata = sarrayReadStream ( fp ) ; ignore = fscanf ( fp , \"\\\\nDatafile<S2SV_blank>names:\" ) ; gplot -> datanames = sarrayReadStream ( fp ) ; ignore = fscanf ( fp , \"\\\\nPlot<S2SV_blank>data:\" ) ; gplot -> plotdata = sarrayReadStream ( fp ) ; ignore = fscanf ( fp , \"\\\\nPlot<S2SV_blank>titles:\" ) ; gplot -> plottitles = sarrayReadStream ( fp ) ; ignore = fscanf ( fp , \"\\\\nPlot<S2SV_blank>styles:\" ) ; gplot -> plotstyles = numaReadStream ( fp ) ; ignore = fscanf ( fp , \"Number<S2SV_blank>of<S2SV_blank>plots:<S2SV_blank>%d\\\\n\" , & gplot -> nplots ) ; <S2SV_StartBug> ignore = fscanf ( fp , \"Output<S2SV_blank>file<S2SV_blank>name:<S2SV_blank>%s\\\\n\" , buf ) ; <S2SV_EndBug> stringReplace ( & gplot -> outname , buf ) ; ignore = fscanf ( fp , \"Axis<S2SV_blank>scaling:<S2SV_blank>%d\\\\n\" , & gplot -> scaling ) ; fclose ( fp ) ; return gplot ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( fp , \"Rootname:<S2SV_blank>%511s\\\\n\" <S2SV_ModEnd> , buf ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , fp ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , fp ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , fp ) <S2SV_ModStart> ( fp , \"Commandfile<S2SV_blank>name:<S2SV_blank>%511s\\\\n\" <S2SV_ModEnd> , buf ) <S2SV_ModStart> ( fp , \"Output<S2SV_blank>file<S2SV_blank>name:<S2SV_blank>%511s\\\\n\" <S2SV_ModEnd> , buf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-20005\n\n```\nCWE-000 void ngx_gmtime ( time_t t , ngx_tm_t * tp ) { ngx_int_t yday ; <S2SV_StartBug> ngx_uint_t n , sec , min , hour , mday , mon , year , wday , days , leap ; <S2SV_EndBug> <S2SV_StartBug> n = ( ngx_uint_t ) t ; <S2SV_EndBug> days = n / 86400 ; <S2SV_StartBug> wday = ( 4 + days ) % 7 ; <S2SV_EndBug> <S2SV_StartBug> n %= 86400 ; <S2SV_EndBug> hour = n / 3600 ; <S2SV_StartBug> n %= 3600 ; <S2SV_EndBug> <S2SV_StartBug> min = n / 60 ; <S2SV_EndBug> <S2SV_StartBug> sec = n % 60 ; <S2SV_EndBug> days = days - ( 31 + 28 ) + 719527 ; year = ( days + 2 ) * 400 / ( 365 * 400 + 100 - 4 + 1 ) ; yday = days - ( 365 * year + year / 4 - year / 100 + year / 400 ) ; if ( yday < 0 ) { leap = ( year % 4 == 0 ) && ( year % 100 || ( year % 400 == 0 ) ) ; yday = 365 + leap + yday ; year -- ; } mon = ( yday + 31 ) * 10 / 306 ; mday = yday - ( 367 * mon / 12 - 30 ) + 1 ; if ( yday >= 306 ) { year ++ ; mon -= 10 ; } else { mon += 2 ; } tp -> ngx_tm_sec = ( ngx_tm_sec_t ) sec ; tp -> ngx_tm_min = ( ngx_tm_min_t ) min ; tp -> ngx_tm_hour = ( ngx_tm_hour_t ) hour ; tp -> ngx_tm_mday = ( ngx_tm_mday_t ) mday ; tp -> ngx_tm_mon = ( ngx_tm_mon_t ) mon ; tp -> ngx_tm_year = ( ngx_tm_year_t ) year ; tp -> ngx_tm_wday = ( ngx_tm_wday_t ) wday ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> yday ; ngx_uint_t <S2SV_ModEnd> sec , min <S2SV_ModStart> , leap ; if ( t < 0 ) { t = 0 ; } days = t <S2SV_ModEnd> / 86400 ; <S2SV_ModStart> / 86400 ; sec = t % 86400 ; <S2SV_ModStart> % 7 ; hour = sec <S2SV_ModEnd> / 3600 ; <S2SV_ModStart> / 3600 ; sec <S2SV_ModEnd> %= 3600 ; <S2SV_ModStart> ; min = sec <S2SV_ModEnd> / 60 ; <S2SV_ModStart> 60 ; sec %= <S2SV_ModEnd> 60 ; days\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-5327\n\n```\nCWE-119 struct se_portal_group * tcm_loop_make_naa_tpg ( struct se_wwn * wwn , struct config_group * group , const char * name ) { struct tcm_loop_hba * tl_hba = container_of ( wwn , struct tcm_loop_hba , tl_hba_wwn ) ; struct tcm_loop_tpg * tl_tpg ; char * tpgt_str , * end_ptr ; int ret ; unsigned short int tpgt ; tpgt_str = strstr ( name , \"tpgt_\" ) ; if ( ! tpgt_str ) { printk ( KERN_ERR \"Unable<S2SV_blank>to<S2SV_blank>locate<S2SV_blank>\\\\\"tpgt_#\\\\\"<S2SV_blank>directory\" \"<S2SV_blank>group\\\\n\" ) ; return ERR_PTR ( - EINVAL ) ; } tpgt_str += 5 ; tpgt = ( unsigned short int ) simple_strtoul ( tpgt_str , & end_ptr , 0 ) ; <S2SV_StartBug> if ( tpgt > TL_TPGS_PER_HBA ) { <S2SV_EndBug> printk ( KERN_ERR \"Passed<S2SV_blank>tpgt:<S2SV_blank>%hu<S2SV_blank>exceeds<S2SV_blank>TL_TPGS_PER_HBA:\" \"<S2SV_blank>%u\\\\n\" , tpgt , TL_TPGS_PER_HBA ) ; return ERR_PTR ( - EINVAL ) ; } tl_tpg = & tl_hba -> tl_hba_tpgs [ tpgt ] ; tl_tpg -> tl_hba = tl_hba ; tl_tpg -> tl_tpgt = tpgt ; ret = core_tpg_register ( & tcm_loop_fabric_configfs -> tf_ops , wwn , & tl_tpg -> tl_se_tpg , tl_tpg , TRANSPORT_TPG_TYPE_NORMAL ) ; if ( ret < 0 ) return ERR_PTR ( - ENOMEM ) ; printk ( KERN_INFO \"TCM_Loop_ConfigFS:<S2SV_blank>Allocated<S2SV_blank>Emulated<S2SV_blank>%s\" \"<S2SV_blank>Target<S2SV_blank>Port<S2SV_blank>%s,t,0x%04x\\\\n\" , tcm_loop_dump_proto_id ( tl_hba ) , config_item_name ( & wwn -> wwn_group . cg_item ) , tpgt ) ; return & tl_tpg -> tl_se_tpg ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( tpgt >= <S2SV_ModEnd> TL_TPGS_PER_HBA ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12326\n\n```\nCWE-119 static void cliRefreshPrompt ( void ) { <S2SV_StartBug> int len ; <S2SV_EndBug> if ( config . eval_ldb ) return ; <S2SV_StartBug> if ( config . hostsocket != NULL ) <S2SV_EndBug> <S2SV_StartBug> len = snprintf ( config . prompt , sizeof ( config . prompt ) , \"redis<S2SV_blank>%s\" , <S2SV_EndBug> config . hostsocket ) ; else len = anetFormatAddr ( config . prompt , sizeof ( config . prompt ) , config . hostip , config . hostport ) ; if ( config . dbnum != 0 ) len += snprintf ( config . prompt + len , sizeof ( config . prompt ) - len , \"[%d]\" , config . dbnum ) ; snprintf ( config . prompt + len , sizeof ( config . prompt ) - len , \"><S2SV_blank>\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { <S2SV_ModEnd> if ( config <S2SV_ModStart> ) return ; sds prompt = sdsempty ( ) ; <S2SV_ModStart> != NULL ) { prompt = sdscatfmt ( prompt , \"redis<S2SV_blank>%s\" , config . hostsocket ) ; } else { char addr [ 256 ] ; anetFormatAddr ( addr , sizeof ( addr ) , config . hostip , config . hostport ) ; prompt = sdscatlen ( prompt , addr , strlen ( addr ) ) ; } if ( config . dbnum != 0 ) prompt = sdscatfmt ( prompt , \"[%i]\" , config . dbnum ) ; prompt = sdscatlen ( prompt , \"><S2SV_blank>\" , 2 ) ; <S2SV_ModEnd> snprintf ( config <S2SV_ModStart> prompt ) , \"%s\" , prompt ) ; sdsfree ( prompt <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-129(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10663\n\n```\nCWE-129 int sanity_check_ckpt ( struct f2fs_sb_info * sbi ) { unsigned int total , fsmeta ; struct f2fs_super_block * raw_super = F2FS_RAW_SUPER ( sbi ) ; struct f2fs_checkpoint * ckpt = F2FS_CKPT ( sbi ) ; unsigned int ovp_segments , reserved_segments ; <S2SV_StartBug> total = le32_to_cpu ( raw_super -> segment_count ) ; <S2SV_EndBug> fsmeta = le32_to_cpu ( raw_super -> segment_count_ckpt ) ; fsmeta += le32_to_cpu ( raw_super -> segment_count_sit ) ; fsmeta += le32_to_cpu ( raw_super -> segment_count_nat ) ; fsmeta += le32_to_cpu ( ckpt -> rsvd_segment_count ) ; fsmeta += le32_to_cpu ( raw_super -> segment_count_ssa ) ; if ( unlikely ( fsmeta >= total ) ) return 1 ; ovp_segments = le32_to_cpu ( ckpt -> overprov_segment_count ) ; reserved_segments = le32_to_cpu ( ckpt -> rsvd_segment_count ) ; if ( unlikely ( fsmeta < F2FS_MIN_SEGMENTS || ovp_segments == 0 || reserved_segments == 0 ) ) { f2fs_msg ( sbi -> sb , KERN_ERR , \"Wrong<S2SV_blank>layout:<S2SV_blank>check<S2SV_blank>mkfs.f2fs<S2SV_blank>version\" ) ; return 1 ; } <S2SV_StartBug> if ( unlikely ( f2fs_cp_error ( sbi ) ) ) { <S2SV_EndBug> f2fs_msg ( sbi -> sb , KERN_ERR , \"A<S2SV_blank>bug<S2SV_blank>case:<S2SV_blank>need<S2SV_blank>to<S2SV_blank>run<S2SV_blank>fsck\" ) ; return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , reserved_segments ; unsigned int main_segs , blocks_per_seg ; int i ; <S2SV_ModStart> 1 ; } main_segs = le32_to_cpu ( raw_super -> segment_count_main ) ; blocks_per_seg = sbi -> blocks_per_seg ; for ( i = 0 ; i < NR_CURSEG_NODE_TYPE ; i ++ ) { if ( le32_to_cpu ( ckpt -> cur_node_segno [ i ] ) >= main_segs || le16_to_cpu ( ckpt -> cur_node_blkoff [ i ] ) >= blocks_per_seg ) return 1 ; } for ( i = 0 ; i < NR_CURSEG_DATA_TYPE ; i ++ ) { if ( le32_to_cpu ( ckpt -> cur_data_segno [ i ] ) >= main_segs || le16_to_cpu ( ckpt -> cur_data_blkoff [ i ] ) >= blocks_per_seg ) return 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8666\n\n```\nCWE-400 static struct sk_buff * * gre_gro_receive ( struct sk_buff * * head , struct sk_buff * skb ) { struct sk_buff * * pp = NULL ; struct sk_buff * p ; const struct gre_base_hdr * greh ; unsigned int hlen , grehlen ; unsigned int off ; int flush = 1 ; struct packet_offload * ptype ; <S2SV_StartBug> __be16 type ; <S2SV_EndBug> off = skb_gro_offset ( skb ) ; hlen = off + sizeof ( * greh ) ; greh = skb_gro_header_fast ( skb , off ) ; if ( skb_gro_header_hard ( skb , hlen ) ) { greh = skb_gro_header_slow ( skb , hlen , off ) ; if ( unlikely ( ! greh ) ) goto out ; } if ( ( greh -> flags & ~ ( GRE_KEY | GRE_CSUM ) ) != 0 ) goto out ; type = greh -> protocol ; rcu_read_lock ( ) ; ptype = gro_find_receive_by_type ( type ) ; if ( ! ptype ) goto out_unlock ; grehlen = GRE_HEADER_SECTION ; if ( greh -> flags & GRE_KEY ) grehlen += GRE_HEADER_SECTION ; if ( greh -> flags & GRE_CSUM ) grehlen += GRE_HEADER_SECTION ; hlen = off + grehlen ; if ( skb_gro_header_hard ( skb , hlen ) ) { greh = skb_gro_header_slow ( skb , hlen , off ) ; if ( unlikely ( ! greh ) ) goto out_unlock ; } if ( ( greh -> flags & GRE_CSUM ) && ! NAPI_GRO_CB ( skb ) -> flush ) { if ( skb_gro_checksum_simple_validate ( skb ) ) goto out_unlock ; skb_gro_checksum_try_convert ( skb , IPPROTO_GRE , 0 , null_compute_pseudo ) ; } for ( p = * head ; p ; p = p -> next ) { const struct gre_base_hdr * greh2 ; if ( ! NAPI_GRO_CB ( p ) -> same_flow ) continue ; greh2 = ( struct gre_base_hdr * ) ( p -> data + off ) ; if ( greh2 -> flags != greh -> flags || greh2 -> protocol != greh -> protocol ) { NAPI_GRO_CB ( p ) -> same_flow = 0 ; continue ; } if ( greh -> flags & GRE_KEY ) { if ( * ( __be32 * ) ( greh2 + 1 ) != * ( __be32 * ) ( greh + 1 ) ) { NAPI_GRO_CB ( p ) -> same_flow = 0 ; continue ; } } } skb_gro_pull ( skb , grehlen ) ; skb_gro_postpull_rcsum ( skb , greh , grehlen ) ; pp = ptype -> callbacks . gro_receive ( head , skb ) ; flush = 0 ; out_unlock : rcu_read_unlock ( ) ; out : NAPI_GRO_CB ( skb ) -> flush |= flush ; return pp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; __be16 type ; if ( NAPI_GRO_CB ( skb ) -> encap_mark ) goto out ; NAPI_GRO_CB ( skb ) -> encap_mark = 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3183\n\n```\nCWE-125 static void sycc420_to_rgb ( opj_image_t * img ) { int * d0 , * d1 , * d2 , * r , * g , * b , * nr , * ng , * nb ; const int * y , * cb , * cr , * ny ; <S2SV_StartBug> unsigned int maxw , maxh , max ; <S2SV_EndBug> int offset , upb ; unsigned int i , j ; upb = ( int ) img -> comps [ 0 ] . prec ; offset = 1 << ( upb - 1 ) ; upb = ( 1 << upb ) - 1 ; <S2SV_StartBug> maxw = ( unsigned int ) img -> comps [ 0 ] . w ; maxh = ( unsigned int ) img -> comps [ 0 ] . h ; <S2SV_EndBug> max = maxw * maxh ; y = img -> comps [ 0 ] . data ; cb = img -> comps [ 1 ] . data ; cr = img -> comps [ 2 ] . data ; <S2SV_StartBug> d0 = r = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> <S2SV_StartBug> d1 = g = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; <S2SV_EndBug> d2 = b = ( int * ) malloc ( sizeof ( int ) * ( size_t ) max ) ; if ( r == NULL || g == NULL || b == NULL ) goto fails ; <S2SV_StartBug> for ( i = 0U ; i < ( maxh & ~ ( unsigned int ) 1U ) ; i += 2U ) <S2SV_EndBug> { <S2SV_StartBug> ny = y + maxw ; <S2SV_EndBug> nr = r + maxw ; ng = g + maxw ; nb = b + maxw ; <S2SV_StartBug> for ( j = 0 ; j < ( maxw & ~ ( unsigned int ) 1U ) ; j += 2U ) <S2SV_EndBug> { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * ny , * cb , * cr , nr , ng , nb ) ; ++ ny ; ++ nr ; ++ ng ; ++ nb ; sycc_to_rgb ( offset , upb , * ny , * cb , * cr , nr , ng , nb ) ; ++ ny ; ++ nr ; ++ ng ; ++ nb ; ++ cb ; ++ cr ; } <S2SV_StartBug> if ( j < maxw ) <S2SV_EndBug> { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * ny , * cb , * cr , nr , ng , nb ) ; ++ ny ; ++ nr ; ++ ng ; ++ nb ; ++ cb ; ++ cr ; } y += maxw ; r += maxw ; g += maxw ; b += maxw ; } <S2SV_StartBug> if ( i < maxh ) <S2SV_EndBug> { <S2SV_StartBug> for ( j = 0U ; j < ( maxw & ~ ( unsigned int ) 1U ) ; j += 2U ) <S2SV_EndBug> { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; ++ cb ; ++ cr ; } if ( j < maxw ) { sycc_to_rgb ( offset , upb , * y , * cb , * cr , r , g , b ) ; } } free ( img -> comps [ 0 ] . data ) ; img -> comps [ 0 ] . data = d0 ; free ( img -> comps [ 1 ] . data ) ; img -> comps [ 1 ] . data = d1 ; free ( img -> comps [ 2 ] . data ) ; img -> comps [ 2 ] . data = d2 ; <S2SV_StartBug> # if defined ( USE_JPWL ) || defined ( USE_MJ2 ) <S2SV_EndBug> <S2SV_StartBug> img -> comps [ 1 ] . w = maxw ; img -> comps [ 1 ] . h = maxh ; <S2SV_EndBug> <S2SV_StartBug> img -> comps [ 2 ] . w = maxw ; img -> comps [ 2 ] . h = maxh ; <S2SV_EndBug> # else <S2SV_StartBug> img -> comps [ 1 ] . w = ( OPJ_UINT32 ) maxw ; img -> comps [ 1 ] . h = ( OPJ_UINT32 ) maxh ; <S2SV_EndBug> <S2SV_StartBug> img -> comps [ 2 ] . w = ( OPJ_UINT32 ) maxw ; img -> comps [ 2 ] . h = ( OPJ_UINT32 ) maxh ; <S2SV_EndBug> # endif img -> comps [ 1 ] . dx = img -> comps [ 0 ] . dx ; img -> comps [ 2 ] . dx = img -> comps [ 0 ] . dx ; img -> comps [ 1 ] . dy = img -> comps [ 0 ] . dy ; <S2SV_StartBug> img -> comps [ 2 ] . dy = img -> comps [ 0 ] . dy ; <S2SV_EndBug> return ; fails : <S2SV_StartBug> if ( r ) free ( r ) ; <S2SV_EndBug> <S2SV_StartBug> if ( g ) free ( g ) ; <S2SV_EndBug> <S2SV_StartBug> if ( b ) free ( b ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ny ; size_t maxw , maxh , max , offx , loopmaxw , offy , loopmaxh ; int offset , upb ; size_t i <S2SV_ModEnd> ; upb = <S2SV_ModStart> maxw = ( size_t ) img -> comps [ 0 ] . w ; maxh = ( size_t ) img -> comps [ 0 ] . h ; max = maxw * maxh ; y = img -> comps [ 0 ] . data ; cb = img -> comps [ 1 ] . data ; cr = img -> comps [ 2 ] . data ; d0 = r = ( int * ) malloc ( sizeof ( int ) * max ) ; d1 = g <S2SV_ModEnd> = ( int <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> max ) ; d2 = b <S2SV_ModEnd> = ( int <S2SV_ModStart> int ) * <S2SV_ModEnd> max ) ; <S2SV_ModStart> goto fails ; offx = img -> x0 & 1U ; loopmaxw = maxw - offx ; offy = img -> y0 & 1U ; loopmaxh = maxh - offy ; if ( offy > 0U ) { size_t j ; for ( j = 0 ; j < maxw ; ++ j ) { sycc_to_rgb ( offset , upb , * y , 0 , 0 , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; } } <S2SV_ModStart> i < ( loopmaxh <S2SV_ModEnd> & ~ ( <S2SV_ModStart> & ~ ( size_t <S2SV_ModEnd> ) 1U ) <S2SV_ModStart> 2U ) { size_t j ; <S2SV_ModStart> + maxw ; if ( offx > 0U ) { sycc_to_rgb ( offset , upb , * y , 0 , 0 , r , g , b ) ; ++ y ; ++ r ; ++ g ; ++ b ; sycc_to_rgb ( offset , upb , * ny , * cb , * cr , nr , ng , nb ) ; ++ ny ; ++ nr ; ++ ng ; ++ nb ; } <S2SV_ModStart> j < ( loopmaxw <S2SV_ModEnd> & ~ ( <S2SV_ModStart> & ~ ( size_t <S2SV_ModEnd> ) 1U ) <S2SV_ModStart> ( j < loopmaxw <S2SV_ModEnd> ) { sycc_to_rgb <S2SV_ModStart> ( i < loopmaxh ) { size_t j ; <S2SV_ModEnd> for ( j <S2SV_ModStart> & ~ ( size_t <S2SV_ModEnd> ) 1U ) <S2SV_ModStart> = d2 ; <S2SV_ModEnd> img -> comps <S2SV_ModStart> . w = img -> comps [ 2 ] . w = img -> comps [ 0 ] . w ; <S2SV_ModEnd> img -> comps <S2SV_ModStart> . h = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . h = img -> comps [ 0 ] . h ; img -> comps [ 1 ] . dx = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . dx = img -> comps [ 0 ] . dx ; <S2SV_ModEnd> img -> comps <S2SV_ModStart> 1 ] . dy = <S2SV_ModEnd> img -> comps <S2SV_ModStart> 2 ] . <S2SV_ModEnd> dy = img <S2SV_ModStart> ; img -> color_space = OPJ_CLRSPC_SRGB <S2SV_ModEnd> ; return ; <S2SV_ModStart> ; fails : <S2SV_ModEnd> free ( r <S2SV_ModStart> r ) ; <S2SV_ModEnd> free ( g <S2SV_ModStart> g ) ; <S2SV_ModEnd> free ( b\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16939\n\n```\nCWE-416 static int xfrm_user_rcv_msg ( struct sk_buff * skb , struct nlmsghdr * nlh , struct netlink_ext_ack * extack ) { struct net * net = sock_net ( skb -> sk ) ; struct nlattr * attrs [ XFRMA_MAX + 1 ] ; const struct xfrm_link * link ; int type , err ; # ifdef CONFIG_COMPAT if ( in_compat_syscall ( ) ) return - EOPNOTSUPP ; # endif type = nlh -> nlmsg_type ; if ( type > XFRM_MSG_MAX ) return - EINVAL ; type -= XFRM_MSG_BASE ; link = & xfrm_dispatch [ type ] ; if ( ! netlink_net_capable ( skb , CAP_NET_ADMIN ) ) return - EPERM ; if ( ( type == ( XFRM_MSG_GETSA - XFRM_MSG_BASE ) || type == ( XFRM_MSG_GETPOLICY - XFRM_MSG_BASE ) ) && ( nlh -> nlmsg_flags & NLM_F_DUMP ) ) { if ( link -> dump == NULL ) return - EINVAL ; { struct netlink_dump_control c = { <S2SV_StartBug> . dump = link -> dump , <S2SV_EndBug> . done = link -> done , } ; return netlink_dump_start ( net -> xfrm . nlsk , skb , nlh , & c ) ; } } err = nlmsg_parse ( nlh , xfrm_msg_min [ type ] , attrs , link -> nla_max ? : XFRMA_MAX , link -> nla_pol ? : xfrma_policy , extack ) ; if ( err < 0 ) return err ; if ( link -> doit == NULL ) return - EINVAL ; return link -> doit ( skb , nlh , attrs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = { . start = link -> start , .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1019\n\n```\nCWE-264 void dev_load ( struct net * net , const char * name ) { struct net_device * dev ; <S2SV_StartBug> rcu_read_lock ( ) ; <S2SV_EndBug> dev = dev_get_by_name_rcu ( net , name ) ; rcu_read_unlock ( ) ; <S2SV_StartBug> if ( ! dev && capable ( CAP_NET_ADMIN ) ) <S2SV_EndBug> <S2SV_StartBug> request_module ( \"%s\" , name ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * dev ; int no_module ; <S2SV_ModStart> ( ) ; no_module = ! dev ; if ( no_module <S2SV_ModEnd> && capable ( <S2SV_ModStart> CAP_NET_ADMIN ) ) no_module = request_module ( \"netdev-%s\" , name ) ; if ( no_module && capable ( CAP_SYS_MODULE ) ) { if ( ! <S2SV_ModStart> , name ) ) pr_err ( \"Loading<S2SV_blank>kernel<S2SV_blank>module<S2SV_blank>for<S2SV_blank>a<S2SV_blank>network<S2SV_blank>device<S2SV_blank>\" \"with<S2SV_blank>CAP_SYS_MODULE<S2SV_blank>(deprecated).<S2SV_blank><S2SV_blank>Use<S2SV_blank>CAP_NET_ADMIN<S2SV_blank>and<S2SV_blank>alias<S2SV_blank>netdev-%s<S2SV_blank>\" \"instead\\\\n\" , name ) ; } } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2304\n\n```\nCWE-22 int main ( int argc , char * argv [ ] ) { static char buff [ 16384 ] ; struct cpio _cpio ; struct cpio * cpio ; const char * errmsg ; int uid , gid ; int opt ; cpio = & _cpio ; memset ( cpio , 0 , sizeof ( * cpio ) ) ; cpio -> buff = buff ; cpio -> buff_size = sizeof ( buff ) ; # if defined ( HAVE_SIGACTION ) && defined ( SIGPIPE ) { struct sigaction sa ; sigemptyset ( & sa . sa_mask ) ; sa . sa_flags = 0 ; sa . sa_handler = SIG_IGN ; sigaction ( SIGPIPE , & sa , NULL ) ; } # endif lafe_setprogname ( * argv , \"bsdcpio\" ) ; # if HAVE_SETLOCALE if ( setlocale ( LC_ALL , \"\" ) == NULL ) lafe_warnc ( 0 , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>default<S2SV_blank>locale\" ) ; # endif cpio -> uid_override = - 1 ; cpio -> gid_override = - 1 ; cpio -> argv = argv ; cpio -> argc = argc ; cpio -> mode = '\\\\0' ; cpio -> verbose = 0 ; cpio -> compress = '\\\\0' ; cpio -> extract_flags = ARCHIVE_EXTRACT_NO_AUTODIR ; cpio -> extract_flags |= ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER ; cpio -> extract_flags |= ARCHIVE_EXTRACT_SECURE_SYMLINKS ; cpio -> extract_flags |= ARCHIVE_EXTRACT_SECURE_NODOTDOT ; <S2SV_StartBug> cpio -> extract_flags |= ARCHIVE_EXTRACT_PERM ; <S2SV_EndBug> cpio -> extract_flags |= ARCHIVE_EXTRACT_FFLAGS ; cpio -> extract_flags |= ARCHIVE_EXTRACT_ACL ; # if ! defined ( _WIN32 ) && ! defined ( __CYGWIN__ ) if ( geteuid ( ) == 0 ) cpio -> extract_flags |= ARCHIVE_EXTRACT_OWNER ; # endif cpio -> bytes_per_block = 512 ; cpio -> filename = NULL ; cpio -> matching = archive_match_new ( ) ; if ( cpio -> matching == NULL ) lafe_errc ( 1 , 0 , \"Out<S2SV_blank>of<S2SV_blank>memory\" ) ; while ( ( opt = cpio_getopt ( cpio ) ) != - 1 ) { switch ( opt ) { case '0' : cpio -> option_null = 1 ; break ; case 'A' : cpio -> option_append = 1 ; break ; case 'a' : cpio -> option_atime_restore = 1 ; break ; case 'B' : cpio -> bytes_per_block = 5120 ; break ; case OPTION_B64ENCODE : cpio -> add_filter = opt ; break ; case 'C' : cpio -> bytes_per_block = atoi ( cpio -> argument ) ; if ( cpio -> bytes_per_block <= 0 ) lafe_errc ( 1 , 0 , \"Invalid<S2SV_blank>blocksize<S2SV_blank>%s\" , cpio -> argument ) ; break ; case 'c' : cpio -> format = \"odc\" ; break ; case 'd' : cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_NO_AUTODIR ; break ; case 'E' : if ( archive_match_include_pattern_from_file ( cpio -> matching , cpio -> argument , cpio -> option_null ) != ARCHIVE_OK ) lafe_errc ( 1 , 0 , \"Error<S2SV_blank>:<S2SV_blank>%s\" , archive_error_string ( cpio -> matching ) ) ; break ; case 'F' : cpio -> filename = cpio -> argument ; break ; case 'f' : if ( archive_match_exclude_pattern ( cpio -> matching , cpio -> argument ) != ARCHIVE_OK ) lafe_errc ( 1 , 0 , \"Error<S2SV_blank>:<S2SV_blank>%s\" , archive_error_string ( cpio -> matching ) ) ; break ; case OPTION_GRZIP : cpio -> compress = opt ; break ; case 'H' : cpio -> format = cpio -> argument ; break ; case 'h' : long_help ( ) ; break ; case 'I' : cpio -> filename = cpio -> argument ; break ; case 'i' : if ( cpio -> mode != '\\\\0' ) lafe_errc ( 1 , 0 , \"Cannot<S2SV_blank>use<S2SV_blank>both<S2SV_blank>-i<S2SV_blank>and<S2SV_blank>-%c\" , cpio -> mode ) ; cpio -> mode = opt ; break ; case 'J' : cpio -> compress = opt ; break ; case 'j' : cpio -> compress = opt ; break ; case OPTION_INSECURE : cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_SECURE_SYMLINKS ; <S2SV_StartBug> cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_SECURE_NODOTDOT ; <S2SV_EndBug> break ; case 'L' : cpio -> option_follow_links = 1 ; break ; case 'l' : cpio -> option_link = 1 ; break ; case OPTION_LRZIP : case OPTION_LZ4 : case OPTION_LZMA : case OPTION_LZOP : cpio -> compress = opt ; break ; case 'm' : cpio -> extract_flags |= ARCHIVE_EXTRACT_TIME ; break ; case 'n' : cpio -> option_numeric_uid_gid = 1 ; break ; case OPTION_NO_PRESERVE_OWNER : cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_OWNER ; break ; case 'O' : cpio -> filename = cpio -> argument ; break ; case 'o' : if ( cpio -> mode != '\\\\0' ) lafe_errc ( 1 , 0 , \"Cannot<S2SV_blank>use<S2SV_blank>both<S2SV_blank>-o<S2SV_blank>and<S2SV_blank>-%c\" , cpio -> mode ) ; cpio -> mode = opt ; break ; case 'p' : if ( cpio -> mode != '\\\\0' ) lafe_errc ( 1 , 0 , \"Cannot<S2SV_blank>use<S2SV_blank>both<S2SV_blank>-p<S2SV_blank>and<S2SV_blank>-%c\" , cpio -> mode ) ; cpio -> mode = opt ; cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_SECURE_NODOTDOT ; break ; case OPTION_PASSPHRASE : cpio -> passphrase = cpio -> argument ; break ; case OPTION_PRESERVE_OWNER : cpio -> extract_flags |= ARCHIVE_EXTRACT_OWNER ; break ; case OPTION_QUIET : cpio -> quiet = 1 ; break ; case 'R' : errmsg = owner_parse ( cpio -> argument , & uid , & gid ) ; if ( errmsg ) { lafe_warnc ( - 1 , \"%s\" , errmsg ) ; usage ( ) ; } if ( uid != - 1 ) { cpio -> uid_override = uid ; cpio -> uname_override = NULL ; } if ( gid != - 1 ) { cpio -> gid_override = gid ; cpio -> gname_override = NULL ; } break ; case 'r' : cpio -> option_rename = 1 ; break ; case 't' : cpio -> option_list = 1 ; break ; case 'u' : cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_NO_OVERWRITE_NEWER ; break ; case OPTION_UUENCODE : cpio -> add_filter = opt ; break ; case 'v' : cpio -> verbose ++ ; break ; case 'V' : cpio -> dot ++ ; break ; case OPTION_VERSION : version ( ) ; break ; # if 0 case 'W' : break ; # endif case 'y' : cpio -> compress = opt ; break ; case 'Z' : cpio -> compress = opt ; break ; case 'z' : cpio -> compress = opt ; break ; default : usage ( ) ; } } if ( cpio -> option_list && cpio -> mode == '\\\\0' ) cpio -> mode = 'i' ; if ( cpio -> option_list && cpio -> mode != 'i' ) lafe_errc ( 1 , 0 , \"Option<S2SV_blank>-t<S2SV_blank>requires<S2SV_blank>-i\" ) ; if ( cpio -> option_numeric_uid_gid && ! cpio -> option_list ) lafe_errc ( 1 , 0 , \"Option<S2SV_blank>-n<S2SV_blank>requires<S2SV_blank>-it\" ) ; if ( cpio -> format != NULL && cpio -> mode != 'o' ) lafe_errc ( 1 , 0 , \"Option<S2SV_blank>--format<S2SV_blank>requires<S2SV_blank>-o\" ) ; if ( cpio -> option_link && cpio -> mode != 'p' ) lafe_errc ( 1 , 0 , \"Option<S2SV_blank>-l<S2SV_blank>requires<S2SV_blank>-p\" ) ; if ( cpio -> dot && cpio -> verbose ) cpio -> dot = 0 ; switch ( cpio -> mode ) { case 'o' : if ( cpio -> format == NULL ) cpio -> format = \"odc\" ; mode_out ( cpio ) ; break ; case 'i' : while ( * cpio -> argv != NULL ) { if ( archive_match_include_pattern ( cpio -> matching , * cpio -> argv ) != ARCHIVE_OK ) lafe_errc ( 1 , 0 , \"Error<S2SV_blank>:<S2SV_blank>%s\" , archive_error_string ( cpio -> matching ) ) ; -- cpio -> argc ; ++ cpio -> argv ; } if ( cpio -> option_list ) mode_list ( cpio ) ; else mode_in ( cpio ) ; break ; case 'p' : if ( * cpio -> argv == NULL || * * cpio -> argv == '\\\\0' ) lafe_errc ( 1 , 0 , \"-p<S2SV_blank>mode<S2SV_blank>requires<S2SV_blank>a<S2SV_blank>target<S2SV_blank>directory\" ) ; mode_pass ( cpio , * cpio -> argv ) ; break ; default : lafe_errc ( 1 , 0 , \"Must<S2SV_blank>specify<S2SV_blank>at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>of<S2SV_blank>-i,<S2SV_blank>-o,<S2SV_blank>or<S2SV_blank>-p\" ) ; } archive_match_free ( cpio -> matching ) ; free_cache ( cpio -> gname_cache ) ; free_cache ( cpio -> uname_cache ) ; free ( cpio -> destdir ) ; passphrase_free ( cpio -> ppbuff ) ; return ( cpio -> return_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> extract_flags |= ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS ; cpio -> extract_flags |= <S2SV_ModStart> &= ~ ARCHIVE_EXTRACT_SECURE_NODOTDOT ; cpio -> extract_flags &= ~ ARCHIVE_EXTRACT_SECURE_NOABSOLUTEPATHS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1870\n\n```\nCWE-200 int main ( int argc , char * * argv ) { int fd = xopen ( \"/dev/null\" , O_RDWR ) ; while ( fd < 2 ) fd = xdup ( fd ) ; if ( fd > 2 ) close ( fd ) ; if ( argc < 8 ) { error_msg_and_die ( \"Usage:<S2SV_blank>%s<S2SV_blank>SIGNO<S2SV_blank>CORE_SIZE_LIMIT<S2SV_blank>PID<S2SV_blank>UID<S2SV_blank>GID<S2SV_blank>TIME<S2SV_blank>BINARY_NAME<S2SV_blank>[HOSTNAME]\" , argv [ 0 ] ) ; } if ( strchr ( argv [ 1 ] , '<S2SV_blank>' ) ) { int i ; for ( i = 1 ; argv [ i ] ; i ++ ) { strchrnul ( argv [ i ] , '<S2SV_blank>' ) [ 0 ] = '\\\\0' ; } } logmode = LOGMODE_JOURNAL ; load_abrt_conf ( ) ; bool setting_MakeCompatCore ; bool setting_SaveBinaryImage ; { map_string_t * settings = new_map_string ( ) ; load_abrt_plugin_conf_file ( \"CCpp.conf\" , settings ) ; const char * value ; value = get_map_string_item_or_NULL ( settings , \"MakeCompatCore\" ) ; setting_MakeCompatCore = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"SaveBinaryImage\" ) ; setting_SaveBinaryImage = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"VerboseLog\" ) ; if ( value ) g_verbose = xatoi_positive ( value ) ; free_map_string ( settings ) ; } errno = 0 ; const char * signal_str = argv [ 1 ] ; int signal_no = xatoi_positive ( signal_str ) ; off_t ulimit_c = strtoull ( argv [ 2 ] , NULL , 10 ) ; if ( ulimit_c < 0 ) { ulimit_c = ~ ( ( off_t ) 1 << ( sizeof ( off_t ) * 8 - 1 ) ) ; } const char * pid_str = argv [ 3 ] ; pid_t pid = xatoi_positive ( argv [ 3 ] ) ; uid_t uid = xatoi_positive ( argv [ 4 ] ) ; if ( errno || pid <= 0 ) { perror_msg_and_die ( \"PID<S2SV_blank>\\'%s\\'<S2SV_blank>or<S2SV_blank>limit<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>bogus\" , argv [ 3 ] , argv [ 2 ] ) ; } { char * s = xmalloc_fopen_fgetline_fclose ( VAR_RUN \"/abrt/saved_core_pattern\" ) ; if ( s && s [ 0 ] != '|' ) core_basename = s ; else free ( s ) ; } struct utsname uts ; if ( ! argv [ 8 ] ) { uname ( & uts ) ; argv [ 8 ] = uts . nodename ; } char path [ PATH_MAX ] ; int src_fd_binary = - 1 ; char * executable = get_executable ( pid , setting_SaveBinaryImage ? & src_fd_binary : NULL ) ; if ( executable && strstr ( executable , \"/abrt-hook-ccpp\" ) ) { error_msg_and_die ( \"PID<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>\\'%s\\',<S2SV_blank>not<S2SV_blank>dumping<S2SV_blank>it<S2SV_blank>to<S2SV_blank>avoid<S2SV_blank>recursion\" , ( long ) pid , executable ) ; } user_pwd = get_cwd ( pid ) ; log_notice ( \"user_pwd:\\'%s\\'\" , user_pwd ) ; sprintf ( path , \"/proc/%lu/status\" , ( long ) pid ) ; proc_pid_status = xmalloc_xopen_read_close ( path , NULL ) ; uid_t fsuid = uid ; uid_t tmp_fsuid = get_fsuid ( ) ; int suid_policy = dump_suid_policy ( ) ; if ( tmp_fsuid != uid ) { fsuid = 0 ; if ( suid_policy == DUMP_SUID_UNSAFE ) fsuid = tmp_fsuid ; else { g_user_core_flags = O_EXCL ; g_need_nonrelative = 1 ; } } <S2SV_StartBug> if ( setting_MakeCompatCore && ulimit_c != 0 ) <S2SV_EndBug> user_core_fd = open_user_core ( uid , fsuid , pid , & argv [ 1 ] ) ; if ( executable == NULL ) { error_msg ( \"Can\\'t<S2SV_blank>read<S2SV_blank>/proc/%lu/exe<S2SV_blank>link\" , ( long ) pid ) ; goto create_user_core ; } const char * signame = NULL ; switch ( signal_no ) { case SIGILL : signame = \"ILL\" ; break ; case SIGFPE : signame = \"FPE\" ; break ; case SIGSEGV : signame = \"SEGV\" ; break ; case SIGBUS : signame = \"BUS\" ; break ; case SIGABRT : signame = \"ABRT\" ; break ; case SIGTRAP : signame = \"TRAP\" ; break ; default : goto create_user_core ; } if ( ! daemon_is_ok ( ) ) { log ( \"abrtd<S2SV_blank>is<S2SV_blank>not<S2SV_blank>running.<S2SV_blank>If<S2SV_blank>it<S2SV_blank>crashed,<S2SV_blank>\" \"/proc/sys/kernel/core_pattern<S2SV_blank>contains<S2SV_blank>a<S2SV_blank>stale<S2SV_blank>value,<S2SV_blank>\" \"consider<S2SV_blank>resetting<S2SV_blank>it<S2SV_blank>to<S2SV_blank>\\'core\\'\" ) ; goto create_user_core ; } if ( g_settings_nMaxCrashReportsSize > 0 ) { if ( low_free_space ( g_settings_nMaxCrashReportsSize , g_settings_dump_location ) ) goto create_user_core ; } snprintf ( path , sizeof ( path ) , \"%s/last-ccpp\" , g_settings_dump_location ) ; if ( check_recent_crash_file ( path , executable ) ) { goto create_user_core ; } const char * last_slash = strrchr ( executable , '/' ) ; if ( last_slash && strncmp ( ++ last_slash , \"abrt\" , 4 ) == 0 ) { if ( snprintf ( path , sizeof ( path ) , \"%s/%s-coredump\" , g_settings_dump_location , last_slash ) >= sizeof ( path ) ) error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\':<S2SV_blank>truncated<S2SV_blank>long<S2SV_blank>file<S2SV_blank>path\" , path ) ; int abrt_core_fd = xopen3 ( path , O_WRONLY | O_CREAT | O_TRUNC , 0600 ) ; off_t core_size = copyfd_eof ( STDIN_FILENO , abrt_core_fd , COPYFD_SPARSE ) ; if ( core_size < 0 || fsync ( abrt_core_fd ) != 0 ) { unlink ( path ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; if ( proc_cwd != NULL ) closedir ( proc_cwd ) ; return 0 ; } unsigned path_len = snprintf ( path , sizeof ( path ) , \"%s/ccpp-%s-%lu.new\" , g_settings_dump_location , iso_date_string ( NULL ) , ( long ) pid ) ; if ( path_len >= ( sizeof ( path ) - sizeof ( \"/\" FILENAME_COREDUMP ) ) ) { goto create_user_core ; } <S2SV_StartBug> dd = dd_create_skeleton ( path , fsuid , DEFAULT_DUMP_DIR_MODE , 0 ) ; <S2SV_EndBug> if ( dd ) { char * rootdir = get_rootdir ( pid ) ; dd_create_basic_files ( dd , fsuid , NULL ) ; char source_filename [ sizeof ( \"/proc/%lu/somewhat_long_name\" ) + sizeof ( long ) * 3 ] ; int source_base_ofs = sprintf ( source_filename , \"/proc/%lu/smaps\" , ( long ) pid ) ; source_base_ofs -= strlen ( \"smaps\" ) ; char * dest_filename = concat_path_file ( dd -> dd_dirname , \"also_somewhat_longish_name\" ) ; char * dest_base = strrchr ( dest_filename , '/' ) + 1 ; strcpy ( source_filename + source_base_ofs , \"maps\" ) ; strcpy ( dest_base , FILENAME_MAPS ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( source_filename + source_base_ofs , \"limits\" ) ; strcpy ( dest_base , FILENAME_LIMITS ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( source_filename + source_base_ofs , \"cgroup\" ) ; strcpy ( dest_base , FILENAME_CGROUP ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( dest_base , FILENAME_OPEN_FDS ) ; dump_fd_info ( dest_filename , source_filename , source_base_ofs , dd -> dd_uid , dd -> dd_gid ) ; free ( dest_filename ) ; dd_save_text ( dd , FILENAME_ANALYZER , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_TYPE , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_EXECUTABLE , executable ) ; dd_save_text ( dd , FILENAME_PID , pid_str ) ; dd_save_text ( dd , FILENAME_PROC_PID_STATUS , proc_pid_status ) ; if ( user_pwd ) dd_save_text ( dd , FILENAME_PWD , user_pwd ) ; if ( rootdir ) { if ( strcmp ( rootdir , \"/\" ) != 0 ) dd_save_text ( dd , FILENAME_ROOTDIR , rootdir ) ; } char * reason = xasprintf ( \"%s<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>SIG%s\" , last_slash , signame ? signame : signal_str ) ; dd_save_text ( dd , FILENAME_REASON , reason ) ; free ( reason ) ; char * cmdline = get_cmdline ( pid ) ; dd_save_text ( dd , FILENAME_CMDLINE , cmdline ? : \"\" ) ; free ( cmdline ) ; char * environ = get_environ ( pid ) ; dd_save_text ( dd , FILENAME_ENVIRON , environ ? : \"\" ) ; free ( environ ) ; char * fips_enabled = xmalloc_fopen_fgetline_fclose ( \"/proc/sys/crypto/fips_enabled\" ) ; if ( fips_enabled ) { if ( strcmp ( fips_enabled , \"0\" ) != 0 ) dd_save_text ( dd , \"fips_enabled\" , fips_enabled ) ; free ( fips_enabled ) ; } dd_save_text ( dd , FILENAME_ABRT_VERSION , VERSION ) ; if ( src_fd_binary > 0 ) { strcpy ( path + path_len , \"/\" FILENAME_BINARY ) ; int dst_fd = create_or_die ( path ) ; off_t sz = copyfd_eof ( src_fd_binary , dst_fd , COPYFD_SPARSE ) ; if ( fsync ( dst_fd ) != 0 || close ( dst_fd ) != 0 || sz < 0 ) { dd_delete ( dd ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } close ( src_fd_binary ) ; } strcpy ( path + path_len , \"/\" FILENAME_COREDUMP ) ; int abrt_core_fd = create_or_die ( path ) ; off_t core_size = copyfd_sparse ( STDIN_FILENO , abrt_core_fd , user_core_fd , ulimit_c ) ; if ( fsync ( abrt_core_fd ) != 0 || close ( abrt_core_fd ) != 0 || core_size < 0 ) { unlink ( path ) ; dd_delete ( dd ) ; if ( user_core_fd >= 0 ) unlinkat ( dirfd ( proc_cwd ) , core_basename , 0 ) ; error_msg_and_die ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , path ) ; } if ( user_core_fd >= 0 && ( fsync ( user_core_fd ) != 0 || close ( user_core_fd ) != 0 || ( ulimit_c == 0 || core_size > ulimit_c ) ) ) { unlinkat ( dirfd ( proc_cwd ) , core_basename , 0 ) ; } # if 0 { char * java_log = xasprintf ( \"/tmp/jvm-%lu/hs_error.log\" , ( long ) pid ) ; int src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; if ( src_fd < 0 ) { java_log = xasprintf ( \"%s/hs_err_pid%lu.log\" , user_pwd , ( long ) pid ) ; src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; } if ( src_fd >= 0 ) { strcpy ( path + path_len , \"/hs_err.log\" ) ; int dst_fd = create_or_die ( path ) ; off_t sz = copyfd_eof ( src_fd , dst_fd , COPYFD_SPARSE ) ; if ( close ( dst_fd ) != 0 || sz < 0 ) { dd_delete ( dd ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } close ( src_fd ) ; } } # endif dd_reset_ownership ( dd ) ; dd_close ( dd ) ; path [ path_len ] = '\\\\0' ; char * newpath = xstrndup ( path , path_len - ( sizeof ( \".new\" ) - 1 ) ) ; if ( rename ( path , newpath ) == 0 ) strcpy ( path , newpath ) ; free ( newpath ) ; log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; notify_new_path ( path ) ; if ( g_settings_nMaxCrashReportsSize > 0 ) { unsigned maxsize = g_settings_nMaxCrashReportsSize + g_settings_nMaxCrashReportsSize / 4 ; maxsize |= 63 ; trim_problem_dirs ( g_settings_dump_location , maxsize * ( double ) ( 1024 * 1024 ) , path ) ; } free ( rootdir ) ; if ( proc_cwd != NULL ) closedir ( proc_cwd ) ; return 0 ; } create_user_core : if ( user_core_fd >= 0 ) { off_t core_size = copyfd_size ( STDIN_FILENO , user_core_fd , ulimit_c , COPYFD_SPARSE ) ; if ( fsync ( user_core_fd ) != 0 || close ( user_core_fd ) != 0 || core_size < 0 ) { perror_msg ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'<S2SV_blank>at<S2SV_blank>\\'%s\\'\" , core_basename , user_pwd ) ; unlinkat ( dirfd ( proc_cwd ) , core_basename , 0 ) ; if ( proc_cwd != NULL ) closedir ( proc_cwd ) ; return 1 ; } if ( ulimit_c == 0 || core_size > ulimit_c ) { unlinkat ( dirfd ( proc_cwd ) , core_basename , 0 ) ; if ( proc_cwd != NULL ) closedir ( proc_cwd ) ; return 1 ; } log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>at<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , core_basename , user_pwd , ( long long ) core_size ) ; } if ( proc_cwd != NULL ) closedir ( proc_cwd ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } const uid_t dduid = g_settings_privatereports ? 0 : fsuid ; <S2SV_ModStart> ( path , dduid <S2SV_ModEnd> , DEFAULT_DUMP_DIR_MODE ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13146\n\n```\nCWE-772 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; PixelPacket * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; size_t Unknown6 ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; BlobInfo * blob ; size_t one ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; <S2SV_StartBug> logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; <S2SV_EndBug> image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } clone_info = CloneImageInfo ( image_info ) ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image2 = ReadMATImageV4 ( image_info , image , exception ) ; if ( image2 == NULL ) goto MATLAB_KO ; image = image2 ; goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else goto MATLAB_KO ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) ) MATLAB_KO : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; filepos = TellBlob ( image ) ; while ( ! EOFBlob ( image ) ) { Frames = 1 ; ( void ) SeekBlob ( image , filepos , SEEK_SET ) ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; filepos += MATLAB_HDR . ObjectSize + 4 + 4 ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = DecompressBlock ( image , MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) continue ; MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; Unknown6 = ReadBlobXXXLong ( image2 ) ; ( void ) Unknown6 ; if ( z != 3 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; default : ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ssize_t ) ( ( size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; one = 1 ; image -> colors = one << image -> depth ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { SetImageColorspace ( image , GRAYColorspace ) ; image -> type = GrayscaleType ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; InsertComplexDoubleRow ( ( double * ) BImgBuff , i , image , MinVal , MaxVal ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; InsertComplexFloatRow ( ( float * ) BImgBuff , i , image , MinVal , MaxVal ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; blob = rotated_image -> blob ; rotated_image -> blob = image -> blob ; rotated_image -> colors = image -> colors ; image -> blob = blob ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } AcquireNextImage ( image_info , image ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; goto NEXT_FRAME ; } if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) unlink ( clone_info -> filename ) ; } } } } RelinquishMagickMemory ( BImgBuff ) ; <S2SV_StartBug> quantum_info = DestroyQuantumInfo ( quantum_info ) ; <S2SV_EndBug> END_OF_READING : clone_info = DestroyImageInfo ( clone_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( image == NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , \"enter\" ) ; quantum_info = ( QuantumInfo * ) NULL <S2SV_ModStart> BImgBuff ) ; if ( quantum_info != ( QuantumInfo * ) NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static void update_open_stateflags ( struct nfs4_state * state , mode_t open_flags ) <S2SV_EndBug> { <S2SV_StartBug> switch ( open_flags ) { <S2SV_EndBug> case FMODE_WRITE : state -> n_wronly ++ ; break ; case FMODE_READ : state -> n_rdonly ++ ; break ; case FMODE_READ | FMODE_WRITE : state -> n_rdwr ++ ; } <S2SV_StartBug> nfs4_state_set_mode_locked ( state , state -> state | open_flags ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * state , fmode_t fmode <S2SV_ModEnd> ) { switch <S2SV_ModStart> { switch ( fmode <S2SV_ModEnd> ) { case <S2SV_ModStart> -> state | fmode <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28196\n\n```\nCWE-674 static krb5_error_code get_tag ( const uint8_t * asn1 , size_t len , taginfo * tag_out , const uint8_t * * contents_out , size_t * clen_out , <S2SV_StartBug> const uint8_t * * remainder_out , size_t * rlen_out ) <S2SV_EndBug> { krb5_error_code ret ; uint8_t o ; const uint8_t * c , * p , * tag_start = asn1 ; size_t clen , llen , i ; taginfo t ; * contents_out = * remainder_out = NULL ; * clen_out = * rlen_out = 0 ; if ( len == 0 ) return ASN1_OVERRUN ; o = * asn1 ++ ; len -- ; tag_out -> asn1class = o & 0xC0 ; tag_out -> construction = o & 0x20 ; if ( ( o & 0x1F ) != 0x1F ) { tag_out -> tagnum = o & 0x1F ; } else { tag_out -> tagnum = 0 ; do { if ( len == 0 ) return ASN1_OVERRUN ; o = * asn1 ++ ; len -- ; tag_out -> tagnum = ( tag_out -> tagnum << 7 ) | ( o & 0x7F ) ; } while ( o & 0x80 ) ; } if ( len == 0 ) return ASN1_OVERRUN ; o = * asn1 ++ ; len -- ; if ( o == 0x80 ) { if ( tag_out -> construction != CONSTRUCTED ) return ASN1_MISMATCH_INDEF ; <S2SV_StartBug> p = asn1 ; <S2SV_EndBug> while ( ! ( len >= 2 && p [ 0 ] == 0 && p [ 1 ] == 0 ) ) { <S2SV_StartBug> ret = get_tag ( p , len , & t , & c , & clen , & p , & len ) ; <S2SV_EndBug> if ( ret ) return ret ; } tag_out -> tag_end_len = 2 ; * contents_out = asn1 ; * clen_out = p - asn1 ; * remainder_out = p + 2 ; * rlen_out = len - 2 ; } else if ( ( o & 0x80 ) == 0 ) { if ( o > len ) return ASN1_OVERRUN ; tag_out -> tag_end_len = 0 ; * contents_out = asn1 ; * clen_out = o ; * remainder_out = asn1 + * clen_out ; * rlen_out = len - ( * remainder_out - asn1 ) ; } else { llen = o & 0x7F ; if ( llen > len ) return ASN1_OVERRUN ; if ( llen > sizeof ( * clen_out ) ) return ASN1_OVERFLOW ; for ( i = 0 , clen = 0 ; i < llen ; i ++ ) clen = ( clen << 8 ) | asn1 [ i ] ; if ( clen > len - llen ) return ASN1_OVERRUN ; tag_out -> tag_end_len = 0 ; * contents_out = asn1 + llen ; * clen_out = clen ; * remainder_out = * contents_out + clen ; * rlen_out = len - ( * remainder_out - asn1 ) ; } tag_out -> tag_len = * contents_out - tag_start ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t * rlen_out , int recursion <S2SV_ModStart> return ASN1_MISMATCH_INDEF ; if ( recursion >= 32 ) return ASN1_OVERFLOW ; <S2SV_ModStart> , & len , recursion + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13135\n\n```\nCWE-20 static Image * ReadCUTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowCUTReaderException ( severity , tag ) { if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( severity , tag ) ; } <S2SV_EndBug> Image * image , * palette ; ImageInfo * clone_info ; MagickBooleanType status ; MagickOffsetType offset ; size_t EncodedByte ; unsigned char RunCount , RunValue , RunCountMasked ; CUTHeader Header ; CUTPalHeader PalHeader ; ssize_t depth ; ssize_t i , j ; ssize_t ldblk ; unsigned char * BImgBuff = NULL , * ptrB ; PixelPacket * q ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } palette = NULL ; clone_info = NULL ; Header . Width = ReadBlobLSBShort ( image ) ; Header . Height = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . Width == 0 || Header . Height == 0 || Header . Reserved != 0 ) CUT_KO : ThrowCUTReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; EncodedByte = ReadBlobLSBShort ( image ) ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; ldblk = 0 ; while ( ( int ) RunCountMasked != 0 ) { i = 1 ; if ( ( int ) RunCount < 0x80 ) i = ( ssize_t ) RunCountMasked ; offset = SeekBlob ( image , TellBlob ( image ) + i , SEEK_SET ) ; if ( offset < 0 ) ThrowCUTReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; EncodedByte -= i + 1 ; ldblk += ( ssize_t ) RunCountMasked ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; RunCountMasked = RunCount & 0x7F ; } if ( EncodedByte != 1 ) goto CUT_KO ; i = 0 ; if ( ldblk == ( int ) Header . Width ) i = 8 ; if ( 2 * ldblk == ( int ) Header . Width ) i = 4 ; if ( 8 * ldblk == ( int ) Header . Width ) i = 1 ; if ( i == 0 ) goto CUT_KO ; depth = i ; image -> columns = Header . Width ; image -> rows = Header . Height ; image -> depth = 8 ; image -> colors = ( size_t ) ( GetQuantumRange ( 1UL * i ) + 1 ) ; if ( image_info -> ping != MagickFalse ) goto Finish ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( ( clone_info = CloneImageInfo ( image_info ) ) == NULL ) goto NoPalette ; i = ( ssize_t ) strlen ( clone_info -> filename ) ; j = i ; while ( -- i > 0 ) { if ( clone_info -> filename [ i ] == '.' ) { break ; } if ( clone_info -> filename [ i ] == '/' || clone_info -> filename [ i ] == '\\\\\\\\' || clone_info -> filename [ i ] == ':' ) { i = j ; break ; } } ( void ) CopyMagickString ( clone_info -> filename + i , \".PAL\" , ( size_t ) ( MaxTextExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { ( void ) CopyMagickString ( clone_info -> filename + i , \".pal\" , ( size_t ) ( MaxTextExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info -> filename [ i ] = '\\\\0' ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info = DestroyImageInfo ( clone_info ) ; clone_info = NULL ; goto NoPalette ; } } } if ( ( palette = AcquireImage ( clone_info ) ) == NULL ) goto NoPalette ; status = OpenBlob ( clone_info , palette , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { ErasePalette : palette = DestroyImage ( palette ) ; palette = NULL ; goto NoPalette ; } if ( palette != NULL ) { ( void ) ReadBlob ( palette , 2 , ( unsigned char * ) PalHeader . FileId ) ; if ( strncmp ( PalHeader . FileId , \"AH\" , 2 ) != 0 ) goto ErasePalette ; PalHeader . Version = ReadBlobLSBShort ( palette ) ; PalHeader . Size = ReadBlobLSBShort ( palette ) ; PalHeader . FileType = ( char ) ReadBlobByte ( palette ) ; PalHeader . SubType = ( char ) ReadBlobByte ( palette ) ; PalHeader . BoardID = ReadBlobLSBShort ( palette ) ; PalHeader . GraphicsMode = ReadBlobLSBShort ( palette ) ; PalHeader . MaxIndex = ReadBlobLSBShort ( palette ) ; PalHeader . MaxRed = ReadBlobLSBShort ( palette ) ; PalHeader . MaxGreen = ReadBlobLSBShort ( palette ) ; PalHeader . MaxBlue = ReadBlobLSBShort ( palette ) ; ( void ) ReadBlob ( palette , 20 , ( unsigned char * ) PalHeader . PaletteId ) ; if ( EOFBlob ( image ) ) ThrowCUTReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; if ( PalHeader . MaxIndex < 1 ) goto ErasePalette ; image -> colors = PalHeader . MaxIndex + 1 ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) goto NoMemory ; if ( PalHeader . MaxRed == 0 ) PalHeader . MaxRed = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxGreen == 0 ) PalHeader . MaxGreen = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxBlue == 0 ) PalHeader . MaxBlue = ( unsigned int ) QuantumRange ; for ( i = 0 ; i <= ( int ) PalHeader . MaxIndex ; i ++ ) { j = ( ssize_t ) TellBlob ( palette ) ; if ( ( j % 512 ) > 512 - 6 ) { j = ( ( j / 512 ) + 1 ) * 512 ; offset = SeekBlob ( palette , j , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } image -> colormap [ i ] . red = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxRed ) { image -> colormap [ i ] . red = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . red * QuantumRange + ( PalHeader . MaxRed >> 1 ) ) / PalHeader . MaxRed ) ; } image -> colormap [ i ] . green = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxGreen ) { image -> colormap [ i ] . green = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . green * QuantumRange + ( PalHeader . MaxGreen >> 1 ) ) / PalHeader . MaxGreen ) ; } image -> colormap [ i ] . blue = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxBlue ) { image -> colormap [ i ] . blue = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . blue * QuantumRange + ( PalHeader . MaxBlue >> 1 ) ) / PalHeader . MaxBlue ) ; } } if ( EOFBlob ( image ) ) ThrowCUTReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } NoPalette : if ( palette == NULL ) { image -> colors = 256 ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) { NoMemory : ThrowCUTReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) i ) ; } } BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == NULL ) goto NoMemory ; <S2SV_StartBug> offset = SeekBlob ( image , 6 , SEEK_SET ) ; <S2SV_EndBug> if ( offset < 0 ) { if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } for ( i = 0 ; i < ( int ) Header . Height ; i ++ ) { EncodedByte = ReadBlobLSBShort ( image ) ; ptrB = BImgBuff ; j = ldblk ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; while ( ( int ) RunCountMasked != 0 ) { if ( ( ssize_t ) RunCountMasked > j ) { RunCountMasked = ( unsigned char ) j ; if ( j == 0 ) { break ; } } if ( ( int ) RunCount > 0x80 ) { RunValue = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) memset ( ptrB , ( int ) RunValue , ( size_t ) RunCountMasked ) ; } else { ( void ) ReadBlob ( image , ( size_t ) RunCountMasked , ptrB ) ; } ptrB += ( int ) RunCountMasked ; j -= ( int ) RunCountMasked ; if ( EOFBlob ( image ) != MagickFalse ) goto Finish ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; } InsertRow ( depth , BImgBuff , i , image ) ; } ( void ) SyncImage ( image ) ; if ( palette == NULL ) { if ( ( image -> storage_class == PseudoClass ) && ( SetImageGray ( image , & image -> exception ) != MagickFalse ) ) { if ( GetCutColors ( image ) == 2 ) { for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { register Quantum sample ; sample = ScaleCharToQuantum ( ( unsigned char ) i ) ; if ( image -> colormap [ i ] . red != sample ) goto Finish ; if ( image -> colormap [ i ] . green != sample ) goto Finish ; if ( image -> colormap [ i ] . blue != sample ) goto Finish ; } image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { q = QueueAuthenticPixels ( image , 0 , i , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) { if ( GetPixelRed ( q ) == ScaleCharToQuantum ( 1 ) ) { SetPixelRed ( q , QuantumRange ) ; SetPixelGreen ( q , QuantumRange ) ; SetPixelBlue ( q , QuantumRange ) ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) goto Finish ; } } } } Finish : if ( BImgBuff != NULL ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , tag ) \\\\\\n{ <S2SV_ModEnd> if ( palette <S2SV_ModStart> tag ) ; \\\\\\n} <S2SV_ModEnd> Image * image <S2SV_ModStart> goto NoMemory ; ( void ) memset ( BImgBuff , 0 , ( size_t ) ldblk * sizeof ( * BImgBuff ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9990\n\n```\nCWE-119 static uint32_t color_string_to_rgba ( const char * p , int len ) { uint32_t ret = 0xFF000000 ; const ColorEntry * entry ; char color_name [ 100 ] ; <S2SV_StartBug> if ( * p == '#' ) { <S2SV_EndBug> p ++ ; len -- ; if ( len == 3 ) { ret |= ( hex_char_to_number ( p [ 2 ] ) << 4 ) | ( hex_char_to_number ( p [ 1 ] ) << 12 ) | ( hex_char_to_number ( p [ 0 ] ) << 20 ) ; } else if ( len == 4 ) { ret = ( hex_char_to_number ( p [ 3 ] ) << 4 ) | ( hex_char_to_number ( p [ 2 ] ) << 12 ) | ( hex_char_to_number ( p [ 1 ] ) << 20 ) | ( hex_char_to_number ( p [ 0 ] ) << 28 ) ; } else if ( len == 6 ) { ret |= hex_char_to_number ( p [ 5 ] ) | ( hex_char_to_number ( p [ 4 ] ) << 4 ) | ( hex_char_to_number ( p [ 3 ] ) << 8 ) | ( hex_char_to_number ( p [ 2 ] ) << 12 ) | ( hex_char_to_number ( p [ 1 ] ) << 16 ) | ( hex_char_to_number ( p [ 0 ] ) << 20 ) ; } else if ( len == 8 ) { ret = hex_char_to_number ( p [ 7 ] ) | ( hex_char_to_number ( p [ 6 ] ) << 4 ) | ( hex_char_to_number ( p [ 5 ] ) << 8 ) | ( hex_char_to_number ( p [ 4 ] ) << 12 ) | ( hex_char_to_number ( p [ 3 ] ) << 16 ) | ( hex_char_to_number ( p [ 2 ] ) << 20 ) | ( hex_char_to_number ( p [ 1 ] ) << 24 ) | ( hex_char_to_number ( p [ 0 ] ) << 28 ) ; } } else { strncpy ( color_name , p , len ) ; color_name [ len ] = '\\\\0' ; entry = bsearch ( color_name , color_table , FF_ARRAY_ELEMS ( color_table ) , sizeof ( ColorEntry ) , color_table_compare ) ; if ( ! entry ) return ret ; ret = entry -> rgb_color ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 100 ] ; len = FFMIN ( FFMAX ( len , 0 ) , sizeof ( color_name ) - 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9225\n\n```\nCWE-787 __inline # if defined __GNUC_STDC_INLINE__ || defined __GNUC_GNU_INLINE__ __attribute__ ( ( __gnu_inline__ ) ) # endif # endif const struct ByUnfoldKey * unicode_unfold_key ( OnigCodePoint code ) { static const struct ByUnfoldKey wordlist [ ] = { { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0x1040a , 3267 , 1 } , { 0x1e0a , 1727 , 1 } , { 0x040a , 1016 , 1 } , { 0x010a , 186 , 1 } , { 0x1f0a , 2088 , 1 } , { 0x2c0a , 2451 , 1 } , { 0x0189 , 619 , 1 } , { 0x1f89 , 134 , 2 } , { 0x1f85 , 154 , 2 } , { 0x0389 , 733 , 1 } , { 0x03ff , 724 , 1 } , { 0xab89 , 1523 , 1 } , { 0xab85 , 1511 , 1 } , { 0x10c89 , 3384 , 1 } , { 0x10c85 , 3372 , 1 } , { 0x1e84 , 1911 , 1 } , { 0x03f5 , 752 , 1 } , { 0x0184 , 360 , 1 } , { 0x1f84 , 149 , 2 } , { 0x2c84 , 2592 , 1 } , { 0x017d , 351 , 1 } , { 0x1ff3 , 96 , 2 } , { 0xab84 , 1508 , 1 } , { 0xa784 , 3105 , 1 } , { 0x10c84 , 3369 , 1 } , { 0xab7d , 1487 , 1 } , { 0xa77d , 1706 , 1 } , { 0x1e98 , 38 , 2 } , { 0x0498 , 1106 , 1 } , { 0x0198 , 375 , 1 } , { 0x1f98 , 169 , 2 } , { 0x2c98 , 2622 , 1 } , { 0x0398 , 762 , 1 } , { 0xa684 , 2940 , 1 } , { 0xab98 , 1568 , 1 } , { 0xa798 , 3123 , 1 } , { 0x10c98 , 3429 , 1 } , { 0x050a , 1277 , 1 } , { 0x1ffb , 2265 , 1 } , { 0x1e96 , 16 , 2 } , { 0x0496 , 1103 , 1 } , { 0x0196 , 652 , 1 } , { 0x1f96 , 199 , 2 } , { 0x2c96 , 2619 , 1 } , { 0x0396 , 756 , 1 } , { 0xa698 , 2970 , 1 } , { 0xab96 , 1562 , 1 } , { 0xa796 , 3120 , 1 } , { 0x10c96 , 3423 , 1 } , { 0x1feb , 2259 , 1 } , { 0x2ceb , 2736 , 1 } , { 0x1e90 , 1929 , 1 } , { 0x0490 , 1094 , 1 } , { 0x0190 , 628 , 1 } , { 0x1f90 , 169 , 2 } , { 0x2c90 , 2610 , 1 } , { 0x0390 , 25 , 3 } , { 0xa696 , 2967 , 1 } , { 0xab90 , 1544 , 1 } , { 0xa790 , 3114 , 1 } , { 0x10c90 , 3405 , 1 } , { 0x01d7 , 444 , 1 } , { 0x1fd7 , 31 , 3 } , { 0x1ea6 , 1947 , 1 } , { 0x04a6 , 1127 , 1 } , { 0x01a6 , 676 , 1 } , { 0x1fa6 , 239 , 2 } , { 0x2ca6 , 2643 , 1 } , { 0x03a6 , 810 , 1 } , { 0xa690 , 2958 , 1 } , { 0xaba6 , 1610 , 1 } , { 0xa7a6 , 3144 , 1 } , { 0x10ca6 , 3471 , 1 } , { 0x1ea4 , 1944 , 1 } , { 0x04a4 , 1124 , 1 } , { 0x01a4 , 390 , 1 } , { 0x1fa4 , 229 , 2 } , { 0x2ca4 , 2640 , 1 } , { 0x03a4 , 804 , 1 } , { 0x10a6 , 2763 , 1 } , { 0xaba4 , 1604 , 1 } , { 0xa7a4 , 3141 , 1 } , { 0x10ca4 , 3465 , 1 } , { 0x1ea0 , 1938 , 1 } , { 0x04a0 , 1118 , 1 } , { 0x01a0 , 384 , 1 } , { 0x1fa0 , 209 , 2 } , { 0x2ca0 , 2634 , 1 } , { 0x03a0 , 792 , 1 } , { 0x10a4 , 2757 , 1 } , { 0xaba0 , 1592 , 1 } , { 0xa7a0 , 3135 , 1 } , { 0x10ca0 , 3453 , 1 } , { 0x1eb2 , 1965 , 1 } , { 0x04b2 , 1145 , 1 } , { 0x01b2 , 694 , 1 } , { 0x1fb2 , 249 , 2 } , { 0x2cb2 , 2661 , 1 } , { 0x03fd , 718 , 1 } , { 0x10a0 , 2745 , 1 } , { 0xabb2 , 1646 , 1 } , { 0xa7b2 , 703 , 1 } , { 0x10cb2 , 3507 , 1 } , { 0x1eac , 1956 , 1 } , { 0x04ac , 1136 , 1 } , { 0x01ac , 396 , 1 } , { 0x1fac , 229 , 2 } , { 0x2cac , 2652 , 1 } , { 0x0537 , 1352 , 1 } , { 0x10b2 , 2799 , 1 } , { 0xabac , 1628 , 1 } , { 0xa7ac , 637 , 1 } , { 0x10cac , 3489 , 1 } , { 0x1eaa , 1953 , 1 } , { 0x04aa , 1133 , 1 } , { 0x00dd , 162 , 1 } , { 0x1faa , 219 , 2 } , { 0x2caa , 2649 , 1 } , { 0x03aa , 824 , 1 } , { 0x10ac , 2781 , 1 } , { 0xabaa , 1622 , 1 } , { 0xa7aa , 646 , 1 } , { 0x10caa , 3483 , 1 } , { 0x1ea8 , 1950 , 1 } , { 0x04a8 , 1130 , 1 } , { 0x020a , 517 , 1 } , { 0x1fa8 , 209 , 2 } , { 0x2ca8 , 2646 , 1 } , { 0x03a8 , 817 , 1 } , { 0x10aa , 2775 , 1 } , { 0xaba8 , 1616 , 1 } , { 0xa7a8 , 3147 , 1 } , { 0x10ca8 , 3477 , 1 } , { 0x1ea2 , 1941 , 1 } , { 0x04a2 , 1121 , 1 } , { 0x01a2 , 387 , 1 } , { 0x1fa2 , 219 , 2 } , { 0x2ca2 , 2637 , 1 } , { 0x118a6 , 3528 , 1 } , { 0x10a8 , 2769 , 1 } , { 0xaba2 , 1598 , 1 } , { 0xa7a2 , 3138 , 1 } , { 0x10ca2 , 3459 , 1 } , { 0x2ced , 2739 , 1 } , { 0x1fe9 , 2283 , 1 } , { 0x1fe7 , 47 , 3 } , { 0x1eb0 , 1962 , 1 } , { 0x04b0 , 1142 , 1 } , { 0x118a4 , 3522 , 1 } , { 0x10a2 , 2751 , 1 } , { 0x2cb0 , 2658 , 1 } , { 0x03b0 , 41 , 3 } , { 0x1fe3 , 41 , 3 } , { 0xabb0 , 1640 , 1 } , { 0xa7b0 , 706 , 1 } , { 0x10cb0 , 3501 , 1 } , { 0x01d9 , 447 , 1 } , { 0x1fd9 , 2277 , 1 } , { 0x118a0 , 3510 , 1 } , { 0x00df , 24 , 2 } , { 0x00d9 , 150 , 1 } , { 0xab77 , 1469 , 1 } , { 0x10b0 , 2793 , 1 } , { 0x1eae , 1959 , 1 } , { 0x04ae , 1139 , 1 } , { 0x01ae , 685 , 1 } , { 0x1fae , 239 , 2 } , { 0x2cae , 2655 , 1 } , { 0x118b2 , 3564 , 1 } , { 0xab73 , 1457 , 1 } , { 0xabae , 1634 , 1 } , { 0xab71 , 1451 , 1 } , { 0x10cae , 3495 , 1 } , { 0x1e2a , 1775 , 1 } , { 0x042a , 968 , 1 } , { 0x012a , 234 , 1 } , { 0x1f2a , 2130 , 1 } , { 0x2c2a , 2547 , 1 } , { 0x118ac , 3546 , 1 } , { 0x10ae , 2787 , 1 } , { 0x0535 , 1346 , 1 } , { 0xa72a , 2988 , 1 } , { 0x1e9a , 0 , 2 } , { 0x049a , 1109 , 1 } , { 0xff37 , 3225 , 1 } , { 0x1f9a , 179 , 2 } , { 0x2c9a , 2625 , 1 } , { 0x039a , 772 , 1 } , { 0x118aa , 3540 , 1 } , { 0xab9a , 1574 , 1 } , { 0xa79a , 3126 , 1 } , { 0x10c9a , 3435 , 1 } , { 0x1e94 , 1935 , 1 } , { 0x0494 , 1100 , 1 } , { 0x0194 , 640 , 1 } , { 0x1f94 , 189 , 2 } , { 0x2c94 , 2616 , 1 } , { 0x0394 , 749 , 1 } , { 0x118a8 , 3534 , 1 } , { 0xab94 , 1556 , 1 } , { 0xa69a , 2973 , 1 } , { 0x10c94 , 3417 , 1 } , { 0x10402 , 3243 , 1 } , { 0x1e02 , 1715 , 1 } , { 0x0402 , 992 , 1 } , { 0x0102 , 174 , 1 } , { 0x0533 , 1340 , 1 } , { 0x2c02 , 2427 , 1 } , { 0x118a2 , 3516 , 1 } , { 0x052a , 1325 , 1 } , { 0xa694 , 2964 , 1 } , { 0x1e92 , 1932 , 1 } , { 0x0492 , 1097 , 1 } , { 0x2165 , 2307 , 1 } , { 0x1f92 , 179 , 2 } , { 0x2c92 , 2613 , 1 } , { 0x0392 , 742 , 1 } , { 0x2161 , 2295 , 1 } , { 0xab92 , 1550 , 1 } , { 0xa792 , 3117 , 1 } , { 0x10c92 , 3411 , 1 } , { 0x118b0 , 3558 , 1 } , { 0x1f5f , 2199 , 1 } , { 0x1e8e , 1926 , 1 } , { 0x048e , 1091 , 1 } , { 0x018e , 453 , 1 } , { 0x1f8e , 159 , 2 } , { 0x2c8e , 2607 , 1 } , { 0x038e , 833 , 1 } , { 0xa692 , 2961 , 1 } , { 0xab8e , 1538 , 1 } , { 0x0055 , 59 , 1 } , { 0x10c8e , 3399 , 1 } , { 0x1f5d , 2196 , 1 } , { 0x212a , 27 , 1 } , { 0x04cb , 1181 , 1 } , { 0x01cb , 425 , 1 } , { 0x1fcb , 2241 , 1 } , { 0x118ae , 3552 , 1 } , { 0x0502 , 1265 , 1 } , { 0x00cb , 111 , 1 } , { 0xa68e , 2955 , 1 } , { 0x1e8a , 1920 , 1 } , { 0x048a , 1085 , 1 } , { 0x018a , 622 , 1 } , { 0x1f8a , 139 , 2 } , { 0x2c8a , 2601 , 1 } , { 0x038a , 736 , 1 } , { 0x2c67 , 2571 , 1 } , { 0xab8a , 1526 , 1 } , { 0x1e86 , 1914 , 1 } , { 0x10c8a , 3387 , 1 } , { 0x0186 , 616 , 1 } , { 0x1f86 , 159 , 2 } , { 0x2c86 , 2595 , 1 } , { 0x0386 , 727 , 1 } , { 0xff35 , 3219 , 1 } , { 0xab86 , 1514 , 1 } , { 0xa786 , 3108 , 1 } , { 0x10c86 , 3375 , 1 } , { 0xa68a , 2949 , 1 } , { 0x0555 , 1442 , 1 } , { 0x1ebc , 1980 , 1 } , { 0x04bc , 1160 , 1 } , { 0x01bc , 411 , 1 } , { 0x1fbc , 62 , 2 } , { 0x2cbc , 2676 , 1 } , { 0x1f5b , 2193 , 1 } , { 0xa686 , 2943 , 1 } , { 0xabbc , 1676 , 1 } , { 0x1eb8 , 1974 , 1 } , { 0x04b8 , 1154 , 1 } , { 0x01b8 , 408 , 1 } , { 0x1fb8 , 2268 , 1 } , { 0x2cb8 , 2670 , 1 } , { 0x01db , 450 , 1 } , { 0x1fdb , 2247 , 1 } , { 0xabb8 , 1664 , 1 } , { 0x10bc , 2829 , 1 } , { 0x00db , 156 , 1 } , { 0x1eb6 , 1971 , 1 } , { 0x04b6 , 1151 , 1 } , { 0xff33 , 3213 , 1 } , { 0x1fb6 , 58 , 2 } , { 0x2cb6 , 2667 , 1 } , { 0xff2a , 3186 , 1 } , { 0x10b8 , 2817 , 1 } , { 0xabb6 , 1658 , 1 } , { 0xa7b6 , 3153 , 1 } , { 0x10426 , 3351 , 1 } , { 0x1e26 , 1769 , 1 } , { 0x0426 , 956 , 1 } , { 0x0126 , 228 , 1 } , { 0x0053 , 52 , 1 } , { 0x2c26 , 2535 , 1 } , { 0x0057 , 65 , 1 } , { 0x10b6 , 2811 , 1 } , { 0x022a , 562 , 1 } , { 0xa726 , 2982 , 1 } , { 0x1e2e , 1781 , 1 } , { 0x042e , 980 , 1 } , { 0x012e , 240 , 1 } , { 0x1f2e , 2142 , 1 } , { 0x2c2e , 2559 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2167 , 2313 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa72e , 2994 , 1 } , { 0x1e2c , 1778 , 1 } , { 0x042c , 974 , 1 } , { 0x012c , 237 , 1 } , { 0x1f2c , 2136 , 1 } , { 0x2c2c , 2553 , 1 } , { 0x1f6f , 2223 , 1 } , { 0x2c6f , 604 , 1 } , { 0xabbf , 1685 , 1 } , { 0xa72c , 2991 , 1 } , { 0x1e28 , 1772 , 1 } , { 0x0428 , 962 , 1 } , { 0x0128 , 231 , 1 } , { 0x1f28 , 2124 , 1 } , { 0x2c28 , 2541 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0553 , 1436 , 1 } , { 0x10bf , 2838 , 1 } , { 0xa728 , 2985 , 1 } , { 0x0526 , 1319 , 1 } , { 0x0202 , 505 , 1 } , { 0x1e40 , 1808 , 1 } , { 0x10424 , 3345 , 1 } , { 0x1e24 , 1766 , 1 } , { 0x0424 , 950 , 1 } , { 0x0124 , 225 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c24 , 2529 , 1 } , { 0x052e , 1331 , 1 } , { 0xa740 , 3018 , 1 } , { 0x118bc , 3594 , 1 } , { 0xa724 , 2979 , 1 } , { 0x1ef2 , 2061 , 1 } , { 0x04f2 , 1241 , 1 } , { 0x01f2 , 483 , 1 } , { 0x1ff2 , 257 , 2 } , { 0x2cf2 , 2742 , 1 } , { 0x052c , 1328 , 1 } , { 0x118b8 , 3582 , 1 } , { 0xa640 , 2865 , 1 } , { 0x10422 , 3339 , 1 } , { 0x1e22 , 1763 , 1 } , { 0x0422 , 944 , 1 } , { 0x0122 , 222 , 1 } , { 0x2126 , 820 , 1 } , { 0x2c22 , 2523 , 1 } , { 0x0528 , 1322 , 1 } , { 0x01f1 , 483 , 1 } , { 0x118b6 , 3576 , 1 } , { 0xa722 , 2976 , 1 } , { 0x03f1 , 796 , 1 } , { 0x1ebe , 1983 , 1 } , { 0x04be , 1163 , 1 } , { 0xfb02 , 12 , 2 } , { 0x1fbe , 767 , 1 } , { 0x2cbe , 2679 , 1 } , { 0x01b5 , 405 , 1 } , { 0x0540 , 1379 , 1 } , { 0xabbe , 1682 , 1 } , { 0x0524 , 1316 , 1 } , { 0x00b5 , 779 , 1 } , { 0xabb5 , 1655 , 1 } , { 0x1eba , 1977 , 1 } , { 0x04ba , 1157 , 1 } , { 0x216f , 2337 , 1 } , { 0x1fba , 2226 , 1 } , { 0x2cba , 2673 , 1 } , { 0x10be , 2835 , 1 } , { 0x0051 , 46 , 1 } , { 0xabba , 1670 , 1 } , { 0x10b5 , 2808 , 1 } , { 0x1e6e , 1878 , 1 } , { 0x046e , 1055 , 1 } , { 0x016e , 330 , 1 } , { 0x1f6e , 2220 , 1 } , { 0x2c6e , 664 , 1 } , { 0x118bf , 3603 , 1 } , { 0x0522 , 1313 , 1 } , { 0x10ba , 2823 , 1 } , { 0xa76e , 3087 , 1 } , { 0x1eb4 , 1968 , 1 } , { 0x04b4 , 1148 , 1 } , { 0x2c75 , 2583 , 1 } , { 0x1fb4 , 50 , 2 } , { 0x2cb4 , 2664 , 1 } , { 0xab75 , 1463 , 1 } , { 0x1ec2 , 1989 , 1 } , { 0xabb4 , 1652 , 1 } , { 0xa7b4 , 3150 , 1 } , { 0x1fc2 , 253 , 2 } , { 0x2cc2 , 2685 , 1 } , { 0x03c2 , 800 , 1 } , { 0x00c2 , 83 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff26 , 3174 , 1 } , { 0x10b4 , 2805 , 1 } , { 0x1eca , 2001 , 1 } , { 0x0551 , 1430 , 1 } , { 0x01ca , 425 , 1 } , { 0x1fca , 2238 , 1 } , { 0x2cca , 2697 , 1 } , { 0x10c2 , 2847 , 1 } , { 0x00ca , 108 , 1 } , { 0xff2e , 3198 , 1 } , { 0x1e8c , 1923 , 1 } , { 0x048c , 1088 , 1 } , { 0x0226 , 556 , 1 } , { 0x1f8c , 149 , 2 } , { 0x2c8c , 2604 , 1 } , { 0x038c , 830 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab8c , 1532 , 1 } , { 0xff2c , 3192 , 1 } , { 0x10c8c , 3393 , 1 } , { 0x1ec4 , 1992 , 1 } , { 0x022e , 568 , 1 } , { 0x01c4 , 417 , 1 } , { 0x1fc4 , 54 , 2 } , { 0x2cc4 , 2688 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x00c4 , 89 , 1 } , { 0xff28 , 3180 , 1 } , { 0xa68c , 2952 , 1 } , { 0x01cf , 432 , 1 } , { 0x022c , 565 , 1 } , { 0x118be , 3600 , 1 } , { 0x03cf , 839 , 1 } , { 0x00cf , 123 , 1 } , { 0x118b5 , 3573 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c4 , 2853 , 1 } , { 0x216e , 2334 , 1 } , { 0x24cb , 2406 , 1 } , { 0x0228 , 559 , 1 } , { 0xff24 , 3168 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x118ba , 3588 , 1 } , { 0x1efe , 2079 , 1 } , { 0x04fe , 1259 , 1 } , { 0x01fe , 499 , 1 } , { 0x1e9e , 24 , 2 } , { 0x049e , 1115 , 1 } , { 0x03fe , 721 , 1 } , { 0x1f9e , 199 , 2 } , { 0x2c9e , 2631 , 1 } , { 0x039e , 786 , 1 } , { 0x0224 , 553 , 1 } , { 0xab9e , 1586 , 1 } , { 0xa79e , 3132 , 1 } , { 0x10c9e , 3447 , 1 } , { 0x01f7 , 414 , 1 } , { 0x1ff7 , 67 , 3 } , { 0xff22 , 3162 , 1 } , { 0x03f7 , 884 , 1 } , { 0x118b4 , 3570 , 1 } , { 0x049c , 1112 , 1 } , { 0x019c , 661 , 1 } , { 0x1f9c , 189 , 2 } , { 0x2c9c , 2628 , 1 } , { 0x039c , 779 , 1 } , { 0x24bc , 2361 , 1 } , { 0xab9c , 1580 , 1 } , { 0xa79c , 3129 , 1 } , { 0x10c9c , 3441 , 1 } , { 0x0222 , 550 , 1 } , { 0x1e7c , 1899 , 1 } , { 0x047c , 1076 , 1 } , { 0x1e82 , 1908 , 1 } , { 0x24b8 , 2349 , 1 } , { 0x0182 , 357 , 1 } , { 0x1f82 , 139 , 2 } , { 0x2c82 , 2589 , 1 } , { 0xab7c , 1484 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab82 , 1502 , 1 } , { 0xa782 , 3102 , 1 } , { 0x10c82 , 3363 , 1 } , { 0x2c63 , 1709 , 1 } , { 0x24b6 , 2343 , 1 } , { 0x1e80 , 1905 , 1 } , { 0x0480 , 1082 , 1 } , { 0x1f59 , 2190 , 1 } , { 0x1f80 , 129 , 2 } , { 0x2c80 , 2586 , 1 } , { 0x0059 , 71 , 1 } , { 0xa682 , 2937 , 1 } , { 0xab80 , 1496 , 1 } , { 0xa780 , 3099 , 1 } , { 0x10c80 , 3357 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1e4c , 1826 , 1 } , { 0x0145 , 270 , 1 } , { 0x014c , 279 , 1 } , { 0x1f4c , 2184 , 1 } , { 0x0345 , 767 , 1 } , { 0x0045 , 12 , 1 } , { 0x004c , 31 , 1 } , { 0xa680 , 2934 , 1 } , { 0xa74c , 3036 , 1 } , { 0x1e4a , 1823 , 1 } , { 0x01d5 , 441 , 1 } , { 0x014a , 276 , 1 } , { 0x1f4a , 2178 , 1 } , { 0x03d5 , 810 , 1 } , { 0x00d5 , 141 , 1 } , { 0x004a , 24 , 1 } , { 0x24bf , 2370 , 1 } , { 0xa74a , 3033 , 1 } , { 0xa64c , 2883 , 1 } , { 0x1041c , 3321 , 1 } , { 0x1e1c , 1754 , 1 } , { 0x041c , 926 , 1 } , { 0x011c , 213 , 1 } , { 0x1f1c , 2118 , 1 } , { 0x2c1c , 2505 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xa64a , 2880 , 1 } , { 0x1041a , 3315 , 1 } , { 0x1e1a , 1751 , 1 } , { 0x041a , 920 , 1 } , { 0x011a , 210 , 1 } , { 0x1f1a , 2112 , 1 } , { 0x2c1a , 2499 , 1 } , { 0xabbd , 1679 , 1 } , { 0x0545 , 1394 , 1 } , { 0x054c , 1415 , 1 } , { 0x10418 , 3309 , 1 } , { 0x1e18 , 1748 , 1 } , { 0x0418 , 914 , 1 } , { 0x0118 , 207 , 1 } , { 0x1f18 , 2106 , 1 } , { 0x2c18 , 2493 , 1 } , { 0x10bd , 2832 , 1 } , { 0x2163 , 2301 , 1 } , { 0x054a , 1409 , 1 } , { 0x1040e , 3279 , 1 } , { 0x1e0e , 1733 , 1 } , { 0x040e , 1028 , 1 } , { 0x010e , 192 , 1 } , { 0x1f0e , 2100 , 1 } , { 0x2c0e , 2463 , 1 } , { 0x1efc , 2076 , 1 } , { 0x04fc , 1256 , 1 } , { 0x01fc , 496 , 1 } , { 0x1ffc , 96 , 2 } , { 0x051c , 1304 , 1 } , { 0x1040c , 3273 , 1 } , { 0x1e0c , 1730 , 1 } , { 0x040c , 1022 , 1 } , { 0x010c , 189 , 1 } , { 0x1f0c , 2094 , 1 } , { 0x2c0c , 2457 , 1 } , { 0x1f6d , 2217 , 1 } , { 0x2c6d , 607 , 1 } , { 0x051a , 1301 , 1 } , { 0x24be , 2367 , 1 } , { 0x10408 , 3261 , 1 } , { 0x1e08 , 1724 , 1 } , { 0x0408 , 1010 , 1 } , { 0x0108 , 183 , 1 } , { 0x1f08 , 2082 , 1 } , { 0x2c08 , 2445 , 1 } , { 0x04c9 , 1178 , 1 } , { 0x0518 , 1298 , 1 } , { 0x1fc9 , 2235 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x24ba , 2355 , 1 } , { 0x00c9 , 105 , 1 } , { 0x10416 , 3303 , 1 } , { 0x1e16 , 1745 , 1 } , { 0x0416 , 908 , 1 } , { 0x0116 , 204 , 1 } , { 0x050e , 1283 , 1 } , { 0x2c16 , 2487 , 1 } , { 0x10414 , 3297 , 1 } , { 0x1e14 , 1742 , 1 } , { 0x0414 , 902 , 1 } , { 0x0114 , 201 , 1 } , { 0x042b , 971 , 1 } , { 0x2c14 , 2481 , 1 } , { 0x1f2b , 2133 , 1 } , { 0x2c2b , 2550 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x050c , 1280 , 1 } , { 0x10406 , 3255 , 1 } , { 0x1e06 , 1721 , 1 } , { 0x0406 , 1004 , 1 } , { 0x0106 , 180 , 1 } , { 0x13fb , 1697 , 1 } , { 0x2c06 , 2439 , 1 } , { 0x24c2 , 2379 , 1 } , { 0x118bd , 3597 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0508 , 1274 , 1 } , { 0x10404 , 3249 , 1 } , { 0x1e04 , 1718 , 1 } , { 0x0404 , 998 , 1 } , { 0x0104 , 177 , 1 } , { 0x1f95 , 194 , 2 } , { 0x2c04 , 2433 , 1 } , { 0x0395 , 752 , 1 } , { 0x24ca , 2403 , 1 } , { 0xab95 , 1559 , 1 } , { 0x0531 , 1334 , 1 } , { 0x10c95 , 3420 , 1 } , { 0x0516 , 1295 , 1 } , { 0x1e6c , 1875 , 1 } , { 0x046c , 1052 , 1 } , { 0x016c , 327 , 1 } , { 0x1f6c , 2214 , 1 } , { 0x216d , 2331 , 1 } , { 0x0514 , 1292 , 1 } , { 0x0245 , 697 , 1 } , { 0x024c , 598 , 1 } , { 0xa76c , 3084 , 1 } , { 0x10400 , 3237 , 1 } , { 0x1e00 , 1712 , 1 } , { 0x0400 , 986 , 1 } , { 0x0100 , 171 , 1 } , { 0x24c4 , 2385 , 1 } , { 0x2c00 , 2421 , 1 } , { 0x0506 , 1271 , 1 } , { 0x024a , 595 , 1 } , { 0x1fab , 224 , 2 } , { 0xa66c , 2931 , 1 } , { 0x03ab , 827 , 1 } , { 0x24cf , 2418 , 1 } , { 0xabab , 1625 , 1 } , { 0xa7ab , 631 , 1 } , { 0x10cab , 3486 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0504 , 1268 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x021c , 544 , 1 } , { 0x01a9 , 679 , 1 } , { 0x1fa9 , 214 , 2 } , { 0x10ab , 2778 , 1 } , { 0x03a9 , 820 , 1 } , { 0x212b , 92 , 1 } , { 0xaba9 , 1619 , 1 } , { 0x1e88 , 1917 , 1 } , { 0x10ca9 , 3480 , 1 } , { 0x021a , 541 , 1 } , { 0x1f88 , 129 , 2 } , { 0x2c88 , 2598 , 1 } , { 0x0388 , 730 , 1 } , { 0x13fd , 1703 , 1 } , { 0xab88 , 1520 , 1 } , { 0x10a9 , 2772 , 1 } , { 0x10c88 , 3381 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0218 , 538 , 1 } , { 0x0500 , 1262 , 1 } , { 0x1f4d , 2187 , 1 } , { 0x01a7 , 393 , 1 } , { 0x1fa7 , 244 , 2 } , { 0x004d , 34 , 1 } , { 0x03a7 , 814 , 1 } , { 0xa688 , 2946 , 1 } , { 0xaba7 , 1613 , 1 } , { 0x020e , 523 , 1 } , { 0x10ca7 , 3474 , 1 } , { 0x1e6a , 1872 , 1 } , { 0x046a , 1049 , 1 } , { 0x016a , 324 , 1 } , { 0x1f6a , 2208 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x216c , 2328 , 1 } , { 0x10a7 , 2766 , 1 } , { 0x01d1 , 435 , 1 } , { 0xa76a , 3081 , 1 } , { 0x020c , 520 , 1 } , { 0x03d1 , 762 , 1 } , { 0x00d1 , 129 , 1 } , { 0x1e68 , 1869 , 1 } , { 0x0468 , 1046 , 1 } , { 0x0168 , 321 , 1 } , { 0x1f68 , 2202 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xff31 , 3207 , 1 } , { 0xa66a , 2928 , 1 } , { 0x0208 , 514 , 1 } , { 0xa768 , 3078 , 1 } , { 0x1e64 , 1863 , 1 } , { 0x0464 , 1040 , 1 } , { 0x0164 , 315 , 1 } , { 0x054d , 1418 , 1 } , { 0x2c64 , 673 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xff2b , 3189 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa764 , 3072 , 1 } , { 0xa668 , 2925 , 1 } , { 0x0216 , 535 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x118ab , 3543 , 1 } , { 0x1e62 , 1860 , 1 } , { 0x0462 , 1037 , 1 } , { 0x0162 , 312 , 1 } , { 0x0214 , 532 , 1 } , { 0x2c62 , 655 , 1 } , { 0xa664 , 2919 , 1 } , { 0x1ed2 , 2013 , 1 } , { 0x04d2 , 1193 , 1 } , { 0xa762 , 3069 , 1 } , { 0x1fd2 , 20 , 3 } , { 0x2cd2 , 2709 , 1 } , { 0x118a9 , 3537 , 1 } , { 0x00d2 , 132 , 1 } , { 0x0206 , 511 , 1 } , { 0x10420 , 3333 , 1 } , { 0x1e20 , 1760 , 1 } , { 0x0420 , 938 , 1 } , { 0x0120 , 219 , 1 } , { 0xa662 , 2916 , 1 } , { 0x2c20 , 2517 , 1 } , { 0x1e60 , 1856 , 1 } , { 0x0460 , 1034 , 1 } , { 0x0160 , 309 , 1 } , { 0x0204 , 508 , 1 } , { 0x2c60 , 2562 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x24bd , 2364 , 1 } , { 0x216a , 2322 , 1 } , { 0xa760 , 3066 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xfb16 , 125 , 2 } , { 0x118a7 , 3531 , 1 } , { 0x1efa , 2073 , 1 } , { 0x04fa , 1253 , 1 } , { 0x01fa , 493 , 1 } , { 0x1ffa , 2262 , 1 } , { 0xfb14 , 109 , 2 } , { 0x03fa , 887 , 1 } , { 0xa660 , 2913 , 1 } , { 0x2168 , 2316 , 1 } , { 0x01b7 , 700 , 1 } , { 0x1fb7 , 10 , 3 } , { 0x1f6b , 2211 , 1 } , { 0x2c6b , 2577 , 1 } , { 0x0200 , 502 , 1 } , { 0xabb7 , 1661 , 1 } , { 0xfb06 , 29 , 2 } , { 0x1e56 , 1841 , 1 } , { 0x2164 , 2304 , 1 } , { 0x0156 , 294 , 1 } , { 0x1f56 , 62 , 3 } , { 0x0520 , 1310 , 1 } , { 0x004f , 40 , 1 } , { 0x0056 , 62 , 1 } , { 0x10b7 , 2814 , 1 } , { 0xa756 , 3051 , 1 } , { 0xfb04 , 5 , 3 } , { 0x1e78 , 1893 , 1 } , { 0x0478 , 1070 , 1 } , { 0x0178 , 168 , 1 } , { 0x1e54 , 1838 , 1 } , { 0x2162 , 2298 , 1 } , { 0x0154 , 291 , 1 } , { 0x1f54 , 57 , 3 } , { 0xab78 , 1472 , 1 } , { 0xa656 , 2898 , 1 } , { 0x0054 , 56 , 1 } , { 0x1e52 , 1835 , 1 } , { 0xa754 , 3048 , 1 } , { 0x0152 , 288 , 1 } , { 0x1f52 , 52 , 3 } , { 0x24c9 , 2400 , 1 } , { 0x1e32 , 1787 , 1 } , { 0x0052 , 49 , 1 } , { 0x0132 , 243 , 1 } , { 0xa752 , 3045 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xfb00 , 4 , 2 } , { 0xa654 , 2895 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa732 , 2997 , 1 } , { 0x2160 , 2292 , 1 } , { 0x054f , 1424 , 1 } , { 0x0556 , 1445 , 1 } , { 0x1e50 , 1832 , 1 } , { 0xa652 , 2892 , 1 } , { 0x0150 , 285 , 1 } , { 0x1f50 , 84 , 2 } , { 0x017b , 348 , 1 } , { 0x1e4e , 1829 , 1 } , { 0x0050 , 43 , 1 } , { 0x014e , 282 , 1 } , { 0xa750 , 3042 , 1 } , { 0xab7b , 1481 , 1 } , { 0xa77b , 3093 , 1 } , { 0x004e , 37 , 1 } , { 0x0554 , 1439 , 1 } , { 0xa74e , 3039 , 1 } , { 0x1e48 , 1820 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x216b , 2325 , 1 } , { 0x1f48 , 2172 , 1 } , { 0xa650 , 2889 , 1 } , { 0x0552 , 1433 , 1 } , { 0x0048 , 21 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa748 , 3030 , 1 } , { 0xa64e , 2886 , 1 } , { 0x0532 , 1337 , 1 } , { 0x1041e , 3327 , 1 } , { 0x1e1e , 1757 , 1 } , { 0x041e , 932 , 1 } , { 0x011e , 216 , 1 } , { 0x118b7 , 3579 , 1 } , { 0x2c1e , 2511 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa648 , 2877 , 1 } , { 0x1ff9 , 2253 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x03f9 , 878 , 1 } , { 0x0550 , 1427 , 1 } , { 0x10412 , 3291 , 1 } , { 0x1e12 , 1739 , 1 } , { 0x0412 , 896 , 1 } , { 0x0112 , 198 , 1 } , { 0x054e , 1421 , 1 } , { 0x2c12 , 2475 , 1 } , { 0x10410 , 3285 , 1 } , { 0x1e10 , 1736 , 1 } , { 0x0410 , 890 , 1 } , { 0x0110 , 195 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c10 , 2469 , 1 } , { 0x2132 , 2289 , 1 } , { 0x0548 , 1403 , 1 } , { 0x1ef8 , 2070 , 1 } , { 0x04f8 , 1250 , 1 } , { 0x01f8 , 490 , 1 } , { 0x1ff8 , 2250 , 1 } , { 0x0220 , 381 , 1 } , { 0x1ee2 , 2037 , 1 } , { 0x04e2 , 1217 , 1 } , { 0x01e2 , 462 , 1 } , { 0x1fe2 , 36 , 3 } , { 0x2ce2 , 2733 , 1 } , { 0x03e2 , 857 , 1 } , { 0x051e , 1307 , 1 } , { 0x1ede , 2031 , 1 } , { 0x04de , 1211 , 1 } , { 0x01de , 456 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2cde , 2727 , 1 } , { 0x03de , 851 , 1 } , { 0x00de , 165 , 1 } , { 0x1f69 , 2205 , 1 } , { 0x2c69 , 2574 , 1 } , { 0x1eda , 2025 , 1 } , { 0x04da , 1205 , 1 } , { 0x0512 , 1289 , 1 } , { 0x1fda , 2244 , 1 } , { 0x2cda , 2721 , 1 } , { 0x03da , 845 , 1 } , { 0x00da , 153 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0510 , 1286 , 1 } , { 0x1ed8 , 2022 , 1 } , { 0x04d8 , 1202 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fd8 , 2274 , 1 } , { 0x2cd8 , 2718 , 1 } , { 0x03d8 , 842 , 1 } , { 0x00d8 , 147 , 1 } , { 0x1ed6 , 2019 , 1 } , { 0x04d6 , 1199 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fd6 , 76 , 2 } , { 0x2cd6 , 2715 , 1 } , { 0x03d6 , 792 , 1 } , { 0x00d6 , 144 , 1 } , { 0x1ec8 , 1998 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x01c8 , 421 , 1 } , { 0x1fc8 , 2232 , 1 } , { 0x2cc8 , 2694 , 1 } , { 0xff32 , 3210 , 1 } , { 0x00c8 , 102 , 1 } , { 0x04c7 , 1175 , 1 } , { 0x01c7 , 421 , 1 } , { 0x1fc7 , 15 , 3 } , { 0x1ec0 , 1986 , 1 } , { 0x04c0 , 1187 , 1 } , { 0x00c7 , 99 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2cc0 , 2682 , 1 } , { 0x0179 , 345 , 1 } , { 0x00c0 , 77 , 1 } , { 0x0232 , 574 , 1 } , { 0x01b3 , 402 , 1 } , { 0x1fb3 , 62 , 2 } , { 0xab79 , 1475 , 1 } , { 0xa779 , 3090 , 1 } , { 0x10c7 , 2859 , 1 } , { 0xabb3 , 1649 , 1 } , { 0xa7b3 , 3156 , 1 } , { 0x1fa5 , 234 , 2 } , { 0x10c0 , 2841 , 1 } , { 0x03a5 , 807 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xaba5 , 1607 , 1 } , { 0x01b1 , 691 , 1 } , { 0x10ca5 , 3468 , 1 } , { 0x10b3 , 2802 , 1 } , { 0x2169 , 2319 , 1 } , { 0x024e , 601 , 1 } , { 0xabb1 , 1643 , 1 } , { 0xa7b1 , 682 , 1 } , { 0x10cb1 , 3504 , 1 } , { 0x10a5 , 2760 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x01af , 399 , 1 } , { 0x1faf , 244 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x0248 , 592 , 1 } , { 0x10b1 , 2796 , 1 } , { 0xabaf , 1637 , 1 } , { 0x1fad , 234 , 2 } , { 0x10caf , 3498 , 1 } , { 0x04cd , 1184 , 1 } , { 0x01cd , 429 , 1 } , { 0xabad , 1631 , 1 } , { 0xa7ad , 658 , 1 } , { 0x10cad , 3492 , 1 } , { 0x00cd , 117 , 1 } , { 0x10af , 2790 , 1 } , { 0x021e , 547 , 1 } , { 0x1fa3 , 224 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x03a3 , 800 , 1 } , { 0x10ad , 2784 , 1 } , { 0xaba3 , 1601 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10ca3 , 3462 , 1 } , { 0x10cd , 2862 , 1 } , { 0x1fa1 , 214 , 2 } , { 0x24b7 , 2346 , 1 } , { 0x03a1 , 796 , 1 } , { 0x0212 , 529 , 1 } , { 0xaba1 , 1595 , 1 } , { 0x10a3 , 2754 , 1 } , { 0x10ca1 , 3456 , 1 } , { 0x01d3 , 438 , 1 } , { 0x1fd3 , 25 , 3 } , { 0x0210 , 526 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x00d3 , 135 , 1 } , { 0x1e97 , 34 , 2 } , { 0x10a1 , 2748 , 1 } , { 0x0197 , 649 , 1 } , { 0x1f97 , 204 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x0397 , 759 , 1 } , { 0x1041d , 3324 , 1 } , { 0xab97 , 1565 , 1 } , { 0x041d , 929 , 1 } , { 0x10c97 , 3426 , 1 } , { 0x1f1d , 2121 , 1 } , { 0x2c1d , 2508 , 1 } , { 0x1e72 , 1884 , 1 } , { 0x0472 , 1061 , 1 } , { 0x0172 , 336 , 1 } , { 0x118b3 , 3567 , 1 } , { 0x2c72 , 2580 , 1 } , { 0x0372 , 712 , 1 } , { 0x1041b , 3318 , 1 } , { 0xab72 , 1454 , 1 } , { 0x041b , 923 , 1 } , { 0x118a5 , 3525 , 1 } , { 0x1f1b , 2115 , 1 } , { 0x2c1b , 2502 , 1 } , { 0x1e70 , 1881 , 1 } , { 0x0470 , 1058 , 1 } , { 0x0170 , 333 , 1 } , { 0x118b1 , 3561 , 1 } , { 0x2c70 , 610 , 1 } , { 0x0370 , 709 , 1 } , { 0x1e46 , 1817 , 1 } , { 0xab70 , 1448 , 1 } , { 0x1e66 , 1866 , 1 } , { 0x0466 , 1043 , 1 } , { 0x0166 , 318 , 1 } , { 0x1e44 , 1814 , 1 } , { 0x0046 , 15 , 1 } , { 0x118af , 3555 , 1 } , { 0xa746 , 3027 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa766 , 3075 , 1 } , { 0x0044 , 9 , 1 } , { 0x118ad , 3549 , 1 } , { 0xa744 , 3024 , 1 } , { 0x1e7a , 1896 , 1 } , { 0x047a , 1073 , 1 } , { 0x1e3a , 1799 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa646 , 2874 , 1 } , { 0x1f3a , 2154 , 1 } , { 0xa666 , 2922 , 1 } , { 0xab7a , 1478 , 1 } , { 0x118a3 , 3519 , 1 } , { 0xa644 , 2871 , 1 } , { 0xa73a , 3009 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1ef4 , 2064 , 1 } , { 0x04f4 , 1244 , 1 } , { 0x01f4 , 487 , 1 } , { 0x1ff4 , 101 , 2 } , { 0x118a1 , 3513 , 1 } , { 0x03f4 , 762 , 1 } , { 0x1eec , 2052 , 1 } , { 0x04ec , 1232 , 1 } , { 0x01ec , 477 , 1 } , { 0x1fec , 2286 , 1 } , { 0x0546 , 1397 , 1 } , { 0x03ec , 872 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x013f , 261 , 1 } , { 0x1f3f , 2169 , 1 } , { 0x0544 , 1391 , 1 } , { 0x1eea , 2049 , 1 } , { 0x04ea , 1229 , 1 } , { 0x01ea , 474 , 1 } , { 0x1fea , 2256 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x03ea , 869 , 1 } , { 0x1ee8 , 2046 , 1 } , { 0x04e8 , 1226 , 1 } , { 0x01e8 , 471 , 1 } , { 0x1fe8 , 2280 , 1 } , { 0x053a , 1361 , 1 } , { 0x03e8 , 866 , 1 } , { 0x1ee6 , 2043 , 1 } , { 0x04e6 , 1223 , 1 } , { 0x01e6 , 468 , 1 } , { 0x1fe6 , 88 , 2 } , { 0x1f4b , 2181 , 1 } , { 0x03e6 , 863 , 1 } , { 0x1e5e , 1853 , 1 } , { 0x004b , 27 , 1 } , { 0x015e , 306 , 1 } , { 0x2166 , 2310 , 1 } , { 0x1ee4 , 2040 , 1 } , { 0x04e4 , 1220 , 1 } , { 0x01e4 , 465 , 1 } , { 0x1fe4 , 80 , 2 } , { 0xa75e , 3063 , 1 } , { 0x03e4 , 860 , 1 } , { 0x1ee0 , 2034 , 1 } , { 0x04e0 , 1214 , 1 } , { 0x01e0 , 459 , 1 } , { 0x053f , 1376 , 1 } , { 0x2ce0 , 2730 , 1 } , { 0x03e0 , 854 , 1 } , { 0x1edc , 2028 , 1 } , { 0x04dc , 1208 , 1 } , { 0xa65e , 2910 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2cdc , 2724 , 1 } , { 0x03dc , 848 , 1 } , { 0x00dc , 159 , 1 } , { 0x1ed0 , 2010 , 1 } , { 0x04d0 , 1190 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0x2cd0 , 2706 , 1 } , { 0x03d0 , 742 , 1 } , { 0x00d0 , 126 , 1 } , { 0x1ecc , 2004 , 1 } , { 0x054b , 1412 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fcc , 71 , 2 } , { 0x2ccc , 2700 , 1 } , { 0x1ec6 , 1995 , 1 } , { 0x00cc , 114 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fc6 , 67 , 2 } , { 0x2cc6 , 2691 , 1 } , { 0x24c8 , 2397 , 1 } , { 0x00c6 , 96 , 1 } , { 0x04c5 , 1172 , 1 } , { 0x01c5 , 417 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1fbb , 2229 , 1 } , { 0x24c7 , 2394 , 1 } , { 0x00c5 , 92 , 1 } , { 0x1fb9 , 2271 , 1 } , { 0xabbb , 1673 , 1 } , { 0x24c0 , 2373 , 1 } , { 0x04c3 , 1169 , 1 } , { 0xabb9 , 1667 , 1 } , { 0x1fc3 , 71 , 2 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0x00c3 , 86 , 1 } , { 0x10c5 , 2856 , 1 } , { 0x10bb , 2826 , 1 } , { 0x1ed4 , 2016 , 1 } , { 0x04d4 , 1196 , 1 } , { 0x10b9 , 2820 , 1 } , { 0x13fc , 1700 , 1 } , { 0x2cd4 , 2712 , 1 } , { 0x0246 , 589 , 1 } , { 0x00d4 , 138 , 1 } , { 0x10c3 , 2850 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xff3a , 3234 , 1 } , { 0x0244 , 688 , 1 } , { 0x019f , 670 , 1 } , { 0x1f9f , 204 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x039f , 789 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab9f , 1589 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c9f , 3450 , 1 } , { 0x019d , 667 , 1 } , { 0x1f9d , 194 , 2 } , { 0x023a , 2565 , 1 } , { 0x039d , 783 , 1 } , { 0x1e5a , 1847 , 1 } , { 0xab9d , 1583 , 1 } , { 0x015a , 300 , 1 } , { 0x10c9d , 3444 , 1 } , { 0x1e9b , 1856 , 1 } , { 0x24cd , 2412 , 1 } , { 0x005a , 74 , 1 } , { 0x1f9b , 184 , 2 } , { 0xa75a , 3057 , 1 } , { 0x039b , 776 , 1 } , { 0x1ece , 2007 , 1 } , { 0xab9b , 1577 , 1 } , { 0x1e99 , 42 , 2 } , { 0x10c9b , 3438 , 1 } , { 0x2cce , 2703 , 1 } , { 0x1f99 , 174 , 2 } , { 0x00ce , 120 , 1 } , { 0x0399 , 767 , 1 } , { 0xa65a , 2904 , 1 } , { 0xab99 , 1571 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c99 , 3432 , 1 } , { 0x0193 , 634 , 1 } , { 0x1f93 , 184 , 2 } , { 0x1e58 , 1844 , 1 } , { 0x0393 , 746 , 1 } , { 0x0158 , 297 , 1 } , { 0xab93 , 1553 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c93 , 3414 , 1 } , { 0x0058 , 68 , 1 } , { 0x042d , 977 , 1 } , { 0xa758 , 3054 , 1 } , { 0x1f2d , 2139 , 1 } , { 0x2c2d , 2556 , 1 } , { 0x118bb , 3591 , 1 } , { 0x0191 , 369 , 1 } , { 0x1f91 , 174 , 2 } , { 0x118b9 , 3585 , 1 } , { 0x0391 , 739 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab91 , 1547 , 1 } , { 0xa658 , 2901 , 1 } , { 0x10c91 , 3408 , 1 } , { 0x018f , 625 , 1 } , { 0x1f8f , 164 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x038f , 836 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab8f , 1541 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x10c8f , 3402 , 1 } , { 0x018b , 366 , 1 } , { 0x1f8b , 144 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x0187 , 363 , 1 } , { 0x1f87 , 164 , 2 } , { 0xab8b , 1529 , 1 } , { 0xa78b , 3111 , 1 } , { 0x10c8b , 3390 , 1 } , { 0xab87 , 1517 , 1 } , { 0x04c1 , 1166 , 1 } , { 0x10c87 , 3378 , 1 } , { 0x1e7e , 1902 , 1 } , { 0x047e , 1079 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x00c1 , 80 , 1 } , { 0x2c7e , 580 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xab7e , 1490 , 1 } , { 0xa77e , 3096 , 1 } , { 0x1e76 , 1890 , 1 } , { 0x0476 , 1067 , 1 } , { 0x0176 , 342 , 1 } , { 0x1e42 , 1811 , 1 } , { 0x10c1 , 2844 , 1 } , { 0x0376 , 715 , 1 } , { 0x1e36 , 1793 , 1 } , { 0xab76 , 1466 , 1 } , { 0x0136 , 249 , 1 } , { 0x0042 , 3 , 1 } , { 0x1e3e , 1805 , 1 } , { 0xa742 , 3021 , 1 } , { 0x1e38 , 1796 , 1 } , { 0x1f3e , 2166 , 1 } , { 0xa736 , 3003 , 1 } , { 0x1f38 , 2148 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0587 , 105 , 2 } , { 0xa73e , 3015 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xa738 , 3006 , 1 } , { 0xa642 , 2868 , 1 } , { 0x1e5c , 1850 , 1 } , { 0x1e34 , 1790 , 1 } , { 0x015c , 303 , 1 } , { 0x0134 , 246 , 1 } , { 0x1ef6 , 2067 , 1 } , { 0x04f6 , 1247 , 1 } , { 0x01f6 , 372 , 1 } , { 0x1ff6 , 92 , 2 } , { 0xa75c , 3060 , 1 } , { 0xa734 , 3000 , 1 } , { 0x1ef0 , 2058 , 1 } , { 0x04f0 , 1238 , 1 } , { 0x01f0 , 20 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x1e30 , 1784 , 1 } , { 0x03f0 , 772 , 1 } , { 0x0130 , 261 , 2 } , { 0x0542 , 1385 , 1 } , { 0xa65c , 2907 , 1 } , { 0x1f83 , 144 , 2 } , { 0x0536 , 1349 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xab83 , 1505 , 1 } , { 0x053e , 1373 , 1 } , { 0x10c83 , 3366 , 1 } , { 0x0538 , 1355 , 1 } , { 0x1eee , 2055 , 1 } , { 0x04ee , 1235 , 1 } , { 0x01ee , 480 , 1 } , { 0x1f8d , 154 , 2 } , { 0xffffffff , - 1 , 0 } , { 0x03ee , 875 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab8d , 1535 , 1 } , { 0xa78d , 643 , 1 } , { 0x10c8d , 3396 , 1 } , { 0x0534 , 1343 , 1 } , { 0x0181 , 613 , 1 } , { 0x1f81 , 134 , 2 } , { 0x013d , 258 , 1 } , { 0x1f3d , 2163 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xab81 , 1499 , 1 } , { 0x017f , 52 , 1 } , { 0x10c81 , 3360 , 1 } , { 0x2c7f , 583 , 1 } , { 0x037f , 881 , 1 } , { 0xff2d , 3195 , 1 } , { 0xab7f , 1493 , 1 } , { 0x1e74 , 1887 , 1 } , { 0x0474 , 1064 , 1 } , { 0x0174 , 339 , 1 } , { 0x1e3c , 1802 , 1 } , { 0x0149 , 46 , 2 } , { 0x1f49 , 2175 , 1 } , { 0x1f3c , 2160 , 1 } , { 0xab74 , 1460 , 1 } , { 0x0049 , 3606 , 1 } , { 0x0143 , 267 , 1 } , { 0x24cc , 2409 , 1 } , { 0xa73c , 3012 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0043 , 6 , 1 } , { 0x0141 , 264 , 1 } , { 0x24c6 , 2391 , 1 } , { 0x013b , 255 , 1 } , { 0x1f3b , 2157 , 1 } , { 0x0041 , 0 , 1 } , { 0x0139 , 252 , 1 } , { 0x1f39 , 2151 , 1 } , { 0x24c5 , 2388 , 1 } , { 0x24bb , 2358 , 1 } , { 0x13fa , 1694 , 1 } , { 0x053d , 1370 , 1 } , { 0x24b9 , 2352 , 1 } , { 0x0429 , 965 , 1 } , { 0x2183 , 2340 , 1 } , { 0x1f29 , 2127 , 1 } , { 0x2c29 , 2544 , 1 } , { 0x24c3 , 2382 , 1 } , { 0x10427 , 3354 , 1 } , { 0x10425 , 3348 , 1 } , { 0x0427 , 959 , 1 } , { 0x0425 , 953 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c27 , 2538 , 1 } , { 0x2c25 , 2532 , 1 } , { 0x0549 , 1406 , 1 } , { 0x053c , 1367 , 1 } , { 0x10423 , 3342 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0423 , 947 , 1 } , { 0x0543 , 1388 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c23 , 2526 , 1 } , { 0xff36 , 3222 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0541 , 1382 , 1 } , { 0x10421 , 3336 , 1 } , { 0x053b , 1364 , 1 } , { 0x0421 , 941 , 1 } , { 0xff38 , 3228 , 1 } , { 0x0539 , 1358 , 1 } , { 0x2c21 , 2520 , 1 } , { 0x10419 , 3312 , 1 } , { 0x10417 , 3306 , 1 } , { 0x0419 , 917 , 1 } , { 0x0417 , 911 , 1 } , { 0x1f19 , 2109 , 1 } , { 0x2c19 , 2496 , 1 } , { 0x2c17 , 2490 , 1 } , { 0x023e , 2568 , 1 } , { 0xff34 , 3216 , 1 } , { 0x10415 , 3300 , 1 } , { 0x10413 , 3294 , 1 } , { 0x0415 , 905 , 1 } , { 0x0413 , 899 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c15 , 2484 , 1 } , { 0x2c13 , 2478 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x24ce , 2415 , 1 } , { 0x1040f , 3282 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x040f , 1031 , 1 } , { 0xff30 , 3204 , 1 } , { 0x1f0f , 2103 , 1 } , { 0x2c0f , 2466 , 1 } , { 0x1040d , 3276 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x040d , 1025 , 1 } , { 0x0147 , 273 , 1 } , { 0x1f0d , 2097 , 1 } , { 0x2c0d , 2460 , 1 } , { 0x1040b , 3270 , 1 } , { 0x0047 , 18 , 1 } , { 0x040b , 1019 , 1 } , { 0x0230 , 571 , 1 } , { 0x1f0b , 2091 , 1 } , { 0x2c0b , 2454 , 1 } , { 0x10409 , 3264 , 1 } , { 0x10405 , 3252 , 1 } , { 0x0409 , 1013 , 1 } , { 0x0405 , 1001 , 1 } , { 0x1f09 , 2085 , 1 } , { 0x2c09 , 2448 , 1 } , { 0x2c05 , 2436 , 1 } , { 0x10403 , 3246 , 1 } , { 0x10401 , 3240 , 1 } , { 0x0403 , 995 , 1 } , { 0x0401 , 989 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c03 , 2430 , 1 } , { 0x2c01 , 2424 , 1 } , { 0x13f9 , 1691 , 1 } , { 0x042f , 983 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x1f2f , 2145 , 1 } , { 0x1041f , 3330 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x041f , 935 , 1 } , { 0x023d , 378 , 1 } , { 0x10411 , 3288 , 1 } , { 0x2c1f , 2514 , 1 } , { 0x0411 , 893 , 1 } , { 0x0547 , 1400 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c11 , 2472 , 1 } , { 0x10407 , 3258 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0407 , 1007 , 1 } , { 0x24c1 , 2376 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x2c07 , 2442 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x13f8 , 1688 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff39 , 3231 , 1 } , { 0xffffffff , - 1 , 0 } , { 0x0243 , 354 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0x0241 , 586 , 1 } , { 0xff29 , 3183 , 1 } , { 0x023b , 577 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff27 , 3177 , 1 } , { 0xff25 , 3171 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff23 , 3165 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff21 , 3159 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xfb17 , 117 , 2 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xff2f , 3201 , 1 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xfb15 , 113 , 2 } , { 0xfb13 , 121 , 2 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xfb05 , 29 , 2 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xffffffff , - 1 , 0 } , { 0xfb03 , 0 , 3 } , { 0xfb01 , 8 , 2 } } ; if ( 0 == 0 ) { int key = hash ( & code ) ; if ( key <= MAX_HASH_VALUE && key >= 0 ) { OnigCodePoint gcode = wordlist [ key ] . code ; <S2SV_StartBug> if ( code == gcode ) <S2SV_EndBug> return & wordlist [ key ] ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> code == gcode && wordlist [ key ] . index >= 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4131\n\n```\nCWE-189 <S2SV_StartBug> static void <S2SV_EndBug> _copy_from_pages ( char * p , struct page * * pages , size_t pgbase , size_t len ) { struct page * * pgfrom ; char * vfrom ; size_t copy ; pgfrom = pages + ( pgbase >> PAGE_CACHE_SHIFT ) ; pgbase &= ~ PAGE_CACHE_MASK ; do { copy = PAGE_CACHE_SIZE - pgbase ; if ( copy > len ) copy = len ; vfrom = kmap_atomic ( * pgfrom , KM_USER0 ) ; memcpy ( p , vfrom + pgbase , copy ) ; kunmap_atomic ( vfrom , KM_USER0 ) ; pgbase += copy ; if ( pgbase == PAGE_CACHE_SIZE ) { pgbase = 0 ; pgfrom ++ ; } p += copy ; } while ( ( len -= copy ) != 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> void _copy_from_pages (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int packet_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct sk_buff * skb ; <S2SV_StartBug> int copied , err ; <S2SV_EndBug> struct sockaddr_ll * sll ; int vnet_hdr_len = 0 ; err = - EINVAL ; if ( flags & ~ ( MSG_PEEK | MSG_DONTWAIT | MSG_TRUNC | MSG_CMSG_COMPAT | MSG_ERRQUEUE ) ) goto out ; # if 0 if ( pkt_sk ( sk ) -> ifindex < 0 ) return - ENODEV ; # endif if ( flags & MSG_ERRQUEUE ) { err = sock_recv_errqueue ( sk , msg , len , SOL_PACKET , PACKET_TX_TIMESTAMP ) ; goto out ; } skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & err ) ; if ( skb == NULL ) goto out ; if ( pkt_sk ( sk ) -> has_vnet_hdr ) { struct virtio_net_hdr vnet_hdr = { 0 } ; err = - EINVAL ; vnet_hdr_len = sizeof ( vnet_hdr ) ; if ( len < vnet_hdr_len ) goto out_free ; len -= vnet_hdr_len ; if ( skb_is_gso ( skb ) ) { struct skb_shared_info * sinfo = skb_shinfo ( skb ) ; vnet_hdr . hdr_len = skb_headlen ( skb ) ; vnet_hdr . gso_size = sinfo -> gso_size ; if ( sinfo -> gso_type & SKB_GSO_TCPV4 ) vnet_hdr . gso_type = VIRTIO_NET_HDR_GSO_TCPV4 ; else if ( sinfo -> gso_type & SKB_GSO_TCPV6 ) vnet_hdr . gso_type = VIRTIO_NET_HDR_GSO_TCPV6 ; else if ( sinfo -> gso_type & SKB_GSO_UDP ) vnet_hdr . gso_type = VIRTIO_NET_HDR_GSO_UDP ; else if ( sinfo -> gso_type & SKB_GSO_FCOE ) goto out_free ; else BUG ( ) ; if ( sinfo -> gso_type & SKB_GSO_TCP_ECN ) vnet_hdr . gso_type |= VIRTIO_NET_HDR_GSO_ECN ; } else vnet_hdr . gso_type = VIRTIO_NET_HDR_GSO_NONE ; if ( skb -> ip_summed == CHECKSUM_PARTIAL ) { vnet_hdr . flags = VIRTIO_NET_HDR_F_NEEDS_CSUM ; vnet_hdr . csum_start = skb_checksum_start_offset ( skb ) ; vnet_hdr . csum_offset = skb -> csum_offset ; } else if ( skb -> ip_summed == CHECKSUM_UNNECESSARY ) { vnet_hdr . flags = VIRTIO_NET_HDR_F_DATA_VALID ; } err = memcpy_toiovec ( msg -> msg_iov , ( void * ) & vnet_hdr , vnet_hdr_len ) ; if ( err < 0 ) goto out_free ; } <S2SV_StartBug> sll = & PACKET_SKB_CB ( skb ) -> sa . ll ; <S2SV_EndBug> <S2SV_StartBug> if ( sock -> type == SOCK_PACKET ) <S2SV_EndBug> msg -> msg_namelen = sizeof ( struct sockaddr_pkt ) ; <S2SV_StartBug> else <S2SV_EndBug> msg -> msg_namelen = sll -> sll_halen + offsetof ( struct sockaddr_ll , sll_addr ) ; <S2SV_StartBug> copied = skb -> len ; <S2SV_EndBug> if ( copied > len ) { copied = len ; msg -> msg_flags |= MSG_TRUNC ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto out_free ; sock_recv_ts_and_drops ( msg , sk , skb ) ; <S2SV_StartBug> if ( msg -> msg_name ) <S2SV_EndBug> memcpy ( msg -> msg_name , & PACKET_SKB_CB ( skb ) -> sa , <S2SV_StartBug> msg -> msg_namelen ) ; <S2SV_EndBug> if ( pkt_sk ( sk ) -> auxdata ) { struct tpacket_auxdata aux ; aux . tp_status = TP_STATUS_USER ; if ( skb -> ip_summed == CHECKSUM_PARTIAL ) aux . tp_status |= TP_STATUS_CSUMNOTREADY ; aux . tp_len = PACKET_SKB_CB ( skb ) -> origlen ; aux . tp_snaplen = skb -> len ; aux . tp_mac = 0 ; aux . tp_net = skb_network_offset ( skb ) ; if ( vlan_tx_tag_present ( skb ) ) { aux . tp_vlan_tci = vlan_tx_tag_get ( skb ) ; aux . tp_status |= TP_STATUS_VLAN_VALID ; } else { aux . tp_vlan_tci = 0 ; } aux . tp_padding = 0 ; put_cmsg ( msg , SOL_PACKET , PACKET_AUXDATA , sizeof ( aux ) , & aux ) ; } err = vnet_hdr_len + ( ( flags & MSG_TRUNC ) ? skb -> len : copied ) ; out_free : skb_free_datagram ( sk , skb ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> copied , err <S2SV_ModEnd> ; int vnet_hdr_len <S2SV_ModStart> out_free ; } copied = skb -> len ; if ( copied > len ) { copied = len ; msg -> msg_flags |= MSG_TRUNC ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto out_free ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( msg -> msg_name ) { <S2SV_ModEnd> if ( sock <S2SV_ModStart> == SOCK_PACKET ) { <S2SV_ModStart> sockaddr_pkt ) ; } else { struct sockaddr_ll * sll = & PACKET_SKB_CB ( skb ) -> sa . ll ; <S2SV_ModEnd> msg -> msg_namelen <S2SV_ModStart> sll_addr ) ; } memcpy <S2SV_ModEnd> ( msg -> <S2SV_ModStart> msg -> msg_name <S2SV_ModEnd> , & PACKET_SKB_CB <S2SV_ModStart> msg_namelen ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1959\n\n```\nCWE-264 static bool new_idmap_permitted ( const struct file * file , struct user_namespace * ns , int cap_setid , struct uid_gid_map * new_map ) { if ( ( new_map -> nr_extents == 1 ) && ( new_map -> extent [ 0 ] . count == 1 ) ) { u32 id = new_map -> extent [ 0 ] . lower_first ; if ( cap_setid == CAP_SETUID ) { kuid_t uid = make_kuid ( ns -> parent , id ) ; <S2SV_StartBug> if ( uid_eq ( uid , current_fsuid ( ) ) ) <S2SV_EndBug> return true ; } else if ( cap_setid == CAP_SETGID ) { kgid_t gid = make_kgid ( ns -> parent , id ) ; <S2SV_StartBug> if ( gid_eq ( gid , current_fsgid ( ) ) ) <S2SV_EndBug> return true ; } } if ( ! cap_valid ( cap_setid ) ) return true ; if ( ns_capable ( ns -> parent , cap_setid ) && file_ns_capable ( file , ns -> parent , cap_setid ) ) return true ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( uid , file -> f_cred -> fsuid <S2SV_ModEnd> ) ) return <S2SV_ModStart> ( gid , file -> f_cred -> fsgid <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14879\n\n```\nCWE-120 static char * get_next_file ( FILE * VFile , char * ptr ) { <S2SV_StartBug> char * ret ; <S2SV_EndBug> ret = fgets ( ptr , PATH_MAX , VFile ) ; if ( ! ret ) return NULL ; <S2SV_StartBug> if ( ptr [ strlen ( ptr ) - 1 ] == '\\\\n' ) <S2SV_EndBug> <S2SV_StartBug> ptr [ strlen ( ptr ) - 1 ] = '\\\\0' ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * ret ; size_t len <S2SV_ModStart> return NULL ; len = <S2SV_ModEnd> strlen ( ptr <S2SV_ModStart> ( ptr ) ; if ( len > 0 && ptr [ len <S2SV_ModStart> ) ptr [ len <S2SV_ModEnd> - 1 ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9150\n\n```\nCWE-200 static int do_check ( struct bpf_verifier_env * env ) { struct bpf_verifier_state * state = & env -> cur_state ; struct bpf_insn * insns = env -> prog -> insnsi ; struct bpf_reg_state * regs = state -> regs ; int insn_cnt = env -> prog -> len ; int insn_idx , prev_insn_idx = 0 ; int insn_processed = 0 ; bool do_print_state = false ; init_reg_state ( regs ) ; insn_idx = 0 ; env -> varlen_map_value_access = false ; for ( ; ; ) { struct bpf_insn * insn ; u8 class ; int err ; if ( insn_idx >= insn_cnt ) { verbose ( \"invalid<S2SV_blank>insn<S2SV_blank>idx<S2SV_blank>%d<S2SV_blank>insn_cnt<S2SV_blank>%d\\\\n\" , insn_idx , insn_cnt ) ; return - EFAULT ; } insn = & insns [ insn_idx ] ; class = BPF_CLASS ( insn -> code ) ; if ( ++ insn_processed > BPF_COMPLEXITY_LIMIT_INSNS ) { verbose ( \"BPF<S2SV_blank>program<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.<S2SV_blank>Processed<S2SV_blank>%d<S2SV_blank>insn\\\\n\" , insn_processed ) ; return - E2BIG ; } err = is_state_visited ( env , insn_idx ) ; if ( err < 0 ) return err ; if ( err == 1 ) { if ( log_level ) { if ( do_print_state ) verbose ( \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>safe\\\\n\" , prev_insn_idx , insn_idx ) ; else verbose ( \"%d:<S2SV_blank>safe\\\\n\" , insn_idx ) ; } goto process_bpf_exit ; } if ( log_level && do_print_state ) { verbose ( \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:\" , prev_insn_idx , insn_idx ) ; print_verifier_state ( & env -> cur_state ) ; do_print_state = false ; } if ( log_level ) { verbose ( \"%d:<S2SV_blank>\" , insn_idx ) ; <S2SV_StartBug> print_bpf_insn ( insn ) ; <S2SV_EndBug> } err = ext_analyzer_insn_hook ( env , insn_idx , prev_insn_idx ) ; if ( err ) return err ; if ( class == BPF_ALU || class == BPF_ALU64 ) { err = check_alu_op ( env , insn ) ; if ( err ) return err ; } else if ( class == BPF_LDX ) { enum bpf_reg_type * prev_src_type , src_reg_type ; err = check_reg_arg ( regs , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( regs , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; src_reg_type = regs [ insn -> src_reg ] . type ; err = check_mem_access ( env , insn -> src_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_READ , insn -> dst_reg ) ; if ( err ) return err ; if ( BPF_SIZE ( insn -> code ) != BPF_W && BPF_SIZE ( insn -> code ) != BPF_DW ) { insn_idx ++ ; continue ; } prev_src_type = & env -> insn_aux_data [ insn_idx ] . ptr_type ; if ( * prev_src_type == NOT_INIT ) { * prev_src_type = src_reg_type ; } else if ( src_reg_type != * prev_src_type && ( src_reg_type == PTR_TO_CTX || * prev_src_type == PTR_TO_CTX ) ) { verbose ( \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_STX ) { enum bpf_reg_type * prev_dst_type , dst_reg_type ; if ( BPF_MODE ( insn -> code ) == BPF_XADD ) { err = check_xadd ( env , insn ) ; if ( err ) return err ; insn_idx ++ ; continue ; } err = check_reg_arg ( regs , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( regs , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; dst_reg_type = regs [ insn -> dst_reg ] . type ; err = check_mem_access ( env , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , insn -> src_reg ) ; if ( err ) return err ; prev_dst_type = & env -> insn_aux_data [ insn_idx ] . ptr_type ; if ( * prev_dst_type == NOT_INIT ) { * prev_dst_type = dst_reg_type ; } else if ( dst_reg_type != * prev_dst_type && ( dst_reg_type == PTR_TO_CTX || * prev_dst_type == PTR_TO_CTX ) ) { verbose ( \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_ST ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> src_reg != BPF_REG_0 ) { verbose ( \"BPF_ST<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( regs , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; err = check_mem_access ( env , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , - 1 ) ; if ( err ) return err ; } else if ( class == BPF_JMP ) { u8 opcode = BPF_OP ( insn -> code ) ; if ( opcode == BPF_CALL ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> off != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( \"BPF_CALL<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_call ( env , insn -> imm , insn_idx ) ; if ( err ) return err ; } else if ( opcode == BPF_JA ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( \"BPF_JA<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } insn_idx += insn -> off + 1 ; continue ; } else if ( opcode == BPF_EXIT ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( \"BPF_EXIT<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( regs , BPF_REG_0 , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , BPF_REG_0 ) ) { verbose ( \"R0<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>as<S2SV_blank>return<S2SV_blank>value\\\\n\" ) ; return - EACCES ; } process_bpf_exit : insn_idx = pop_stack ( env , & prev_insn_idx ) ; if ( insn_idx < 0 ) { break ; } else { do_print_state = true ; continue ; } } else { err = check_cond_jmp_op ( env , insn , & insn_idx ) ; if ( err ) return err ; } } else if ( class == BPF_LD ) { u8 mode = BPF_MODE ( insn -> code ) ; if ( mode == BPF_ABS || mode == BPF_IND ) { err = check_ld_abs ( env , insn ) ; if ( err ) return err ; } else if ( mode == BPF_IMM ) { err = check_ld_imm ( env , insn ) ; if ( err ) return err ; insn_idx ++ ; } else { verbose ( \"invalid<S2SV_blank>BPF_LD<S2SV_blank>mode\\\\n\" ) ; return - EINVAL ; } reset_reg_range_values ( regs , insn -> dst_reg ) ; } else { verbose ( \"unknown<S2SV_blank>insn<S2SV_blank>class<S2SV_blank>%d\\\\n\" , class ) ; return - EINVAL ; } insn_idx ++ ; } verbose ( \"processed<S2SV_blank>%d<S2SV_blank>insns\\\\n\" , insn_processed ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; print_bpf_insn ( env ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6548\n\n```\nCWE-200 static int udf_encode_fh ( struct inode * inode , __u32 * fh , int * lenp , struct inode * parent ) { int len = * lenp ; struct kernel_lb_addr location = UDF_I ( inode ) -> i_location ; struct fid * fid = ( struct fid * ) fh ; int type = FILEID_UDF_WITHOUT_PARENT ; if ( parent && ( len < 5 ) ) { * lenp = 5 ; return 255 ; } else if ( len < 3 ) { * lenp = 3 ; return 255 ; } * lenp = 3 ; fid -> udf . block = location . logicalBlockNum ; fid -> udf . partref = location . partitionReferenceNum ; <S2SV_StartBug> fid -> udf . generation = inode -> i_generation ; <S2SV_EndBug> if ( parent ) { location = UDF_I ( parent ) -> i_location ; fid -> udf . parent_block = location . logicalBlockNum ; fid -> udf . parent_partref = location . partitionReferenceNum ; fid -> udf . parent_generation = inode -> i_generation ; * lenp = 5 ; type = FILEID_UDF_WITH_PARENT ; } return type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> udf . parent_partref = 0 ; fid -> udf .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13308\n\n```\nCWE-119 static MagickBooleanType EncodeImage ( const ImageInfo * image_info , Image * image , const size_t data_size , ExceptionInfo * exception ) { # define MaxCode ( number_bits ) ( ( one << ( number_bits ) ) - 1 ) # define MaxHashTable 5003 # define MaxGIFBits 12UL # define MaxGIFTable ( 1UL << MaxGIFBits ) <S2SV_StartBug> # define GIFOutputCode ( code ) { if ( bits > 0 ) datum |= ( size_t ) ( code ) << bits ; else datum = ( size_t ) ( code ) ; bits += number_bits ; while ( bits >= 8 ) { packet [ length ++ ] = ( unsigned char ) ( datum & 0xff ) ; if ( length >= 254 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; length = 0 ; } datum >>= 8 ; bits -= 8 ; } if ( free_code > max_code ) { number_bits ++ ; if ( number_bits == MaxGIFBits ) max_code = MaxGIFTable ; else max_code = MaxCode ( number_bits ) ; } } <S2SV_EndBug> Quantum index ; short * hash_code , * hash_prefix , waiting_code ; size_t bits , clear_code , datum , end_of_information_code , free_code , length , max_code , next_pixel , number_bits , one , pass ; ssize_t displacement , offset , k , y ; unsigned char * packet , * hash_suffix ; assert ( image != ( Image * ) NULL ) ; one = 1 ; packet = ( unsigned char * ) AcquireQuantumMemory ( 256 , sizeof ( * packet ) ) ; hash_code = ( short * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_code ) ) ; hash_prefix = ( short * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_prefix ) ) ; hash_suffix = ( unsigned char * ) AcquireQuantumMemory ( MaxHashTable , sizeof ( * hash_suffix ) ) ; if ( ( packet == ( unsigned char * ) NULL ) || ( hash_code == ( short * ) NULL ) || ( hash_prefix == ( short * ) NULL ) || ( hash_suffix == ( unsigned char * ) NULL ) ) { if ( packet != ( unsigned char * ) NULL ) packet = ( unsigned char * ) RelinquishMagickMemory ( packet ) ; if ( hash_code != ( short * ) NULL ) hash_code = ( short * ) RelinquishMagickMemory ( hash_code ) ; if ( hash_prefix != ( short * ) NULL ) hash_prefix = ( short * ) RelinquishMagickMemory ( hash_prefix ) ; if ( hash_suffix != ( unsigned char * ) NULL ) hash_suffix = ( unsigned char * ) RelinquishMagickMemory ( hash_suffix ) ; return ( MagickFalse ) ; } ( void ) memset ( packet , 0 , 256 * sizeof ( * packet ) ) ; ( void ) memset ( hash_code , 0 , MaxHashTable * sizeof ( * hash_code ) ) ; ( void ) memset ( hash_prefix , 0 , MaxHashTable * sizeof ( * hash_prefix ) ) ; ( void ) memset ( hash_suffix , 0 , MaxHashTable * sizeof ( * hash_suffix ) ) ; number_bits = data_size ; max_code = MaxCode ( number_bits ) ; clear_code = ( ( short ) one << ( data_size - 1 ) ) ; end_of_information_code = clear_code + 1 ; free_code = clear_code + 2 ; length = 0 ; datum = 0 ; bits = 0 ; GIFOutputCode ( clear_code ) ; offset = 0 ; pass = 0 ; waiting_code = 0 ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register const Quantum * magick_restrict p ; register ssize_t x ; p = GetVirtualPixels ( image , 0 , offset , image -> columns , 1 , exception ) ; if ( p == ( const Quantum * ) NULL ) break ; if ( y == 0 ) { waiting_code = ( short ) GetPixelIndex ( image , p ) ; p += GetPixelChannels ( image ) ; } for ( x = ( ssize_t ) ( y == 0 ? 1 : 0 ) ; x < ( ssize_t ) image -> columns ; x ++ ) { <S2SV_StartBug> index = ( Quantum ) ( ( size_t ) GetPixelIndex ( image , p ) & 0xff ) ; <S2SV_EndBug> p += GetPixelChannels ( image ) ; k = ( ssize_t ) ( ( ( size_t ) index << ( MaxGIFBits - 8 ) ) + waiting_code ) ; if ( k >= MaxHashTable ) k -= MaxHashTable ; <S2SV_StartBug> next_pixel = MagickFalse ; <S2SV_EndBug> displacement = 1 ; if ( hash_code [ k ] > 0 ) { if ( ( hash_prefix [ k ] == waiting_code ) && ( hash_suffix [ k ] == ( unsigned char ) index ) ) { waiting_code = hash_code [ k ] ; continue ; } if ( k != 0 ) displacement = MaxHashTable - k ; for ( ; ; ) { k -= displacement ; if ( k < 0 ) k += MaxHashTable ; if ( hash_code [ k ] == 0 ) break ; if ( ( hash_prefix [ k ] == waiting_code ) && ( hash_suffix [ k ] == ( unsigned char ) index ) ) { waiting_code = hash_code [ k ] ; next_pixel = MagickTrue ; break ; } } if ( next_pixel != MagickFalse ) continue ; } GIFOutputCode ( waiting_code ) ; if ( free_code < MaxGIFTable ) { hash_code [ k ] = ( short ) free_code ++ ; hash_prefix [ k ] = waiting_code ; hash_suffix [ k ] = ( unsigned char ) index ; } else { for ( k = 0 ; k < MaxHashTable ; k ++ ) hash_code [ k ] = 0 ; free_code = clear_code + 2 ; GIFOutputCode ( clear_code ) ; number_bits = data_size ; max_code = MaxCode ( number_bits ) ; } waiting_code = ( short ) index ; } if ( image_info -> interlace == NoInterlace ) offset ++ ; else switch ( pass ) { case 0 : default : { offset += 8 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 4 ; } break ; } case 1 : { offset += 8 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 2 ; } break ; } case 2 : { offset += 4 ; if ( offset >= ( ssize_t ) image -> rows ) { pass ++ ; offset = 1 ; } break ; } case 3 : { offset += 2 ; break ; } } } GIFOutputCode ( waiting_code ) ; GIFOutputCode ( end_of_information_code ) ; if ( bits > 0 ) { packet [ length ++ ] = ( unsigned char ) ( datum & 0xff ) ; if ( length >= 254 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; length = 0 ; } } if ( length > 0 ) { ( void ) WriteBlobByte ( image , ( unsigned char ) length ) ; ( void ) WriteBlob ( image , length , packet ) ; } hash_suffix = ( unsigned char * ) RelinquishMagickMemory ( hash_suffix ) ; hash_prefix = ( short * ) RelinquishMagickMemory ( hash_prefix ) ; hash_code = ( short * ) RelinquishMagickMemory ( hash_code ) ; packet = ( unsigned char * ) RelinquishMagickMemory ( packet ) ; return ( MagickTrue ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( code ) \\\\\\n{ <S2SV_ModEnd> if ( bits <S2SV_ModStart> ) ; } \\\\\\n} <S2SV_ModEnd> Quantum index ; <S2SV_ModStart> ++ ) { next_pixel = MagickFalse ; displacement = 1 ; <S2SV_ModStart> -= MaxHashTable ; if ( k < 0 ) continue <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 static void php_imagepolygon ( INTERNAL_FUNCTION_PARAMETERS , int filled ) { zval * IM , * POINTS ; long NPOINTS , COL ; zval * * var = NULL ; gdImagePtr im ; gdPointPtr points ; int npoints , col , nelem , i ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"rall\" , & IM , & POINTS , & NPOINTS , & COL ) == FAILURE ) { return ; } ZEND_FETCH_RESOURCE ( im , gdImagePtr , & IM , - 1 , \"Image\" , le_gd ) ; npoints = NPOINTS ; col = COL ; nelem = zend_hash_num_elements ( Z_ARRVAL_P ( POINTS ) ) ; if ( nelem < 6 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>at<S2SV_blank>least<S2SV_blank>3<S2SV_blank>points<S2SV_blank>in<S2SV_blank>your<S2SV_blank>array\" ) ; RETURN_FALSE ; } if ( npoints <= 0 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>give<S2SV_blank>a<S2SV_blank>positive<S2SV_blank>number<S2SV_blank>of<S2SV_blank>points\" ) ; RETURN_FALSE ; } if ( nelem < npoints * 2 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Trying<S2SV_blank>to<S2SV_blank>use<S2SV_blank>%d<S2SV_blank>points<S2SV_blank>in<S2SV_blank>array<S2SV_blank>with<S2SV_blank>only<S2SV_blank>%d<S2SV_blank>points\" , npoints , nelem / 2 ) ; RETURN_FALSE ; } points = ( gdPointPtr ) safe_emalloc ( npoints , sizeof ( gdPoint ) , 0 ) ; for ( i = 0 ; i < npoints ; i ++ ) { if ( zend_hash_index_find ( Z_ARRVAL_P ( POINTS ) , ( i * 2 ) , ( void * * ) & var ) == SUCCESS ) { <S2SV_StartBug> SEPARATE_ZVAL ( ( var ) ) ; <S2SV_EndBug> <S2SV_StartBug> convert_to_long ( * var ) ; <S2SV_EndBug> <S2SV_StartBug> points [ i ] . x = Z_LVAL_PP ( var ) ; <S2SV_EndBug> } if ( zend_hash_index_find ( Z_ARRVAL_P ( POINTS ) , ( i * 2 ) + 1 , ( void * * ) & var ) == SUCCESS ) { <S2SV_StartBug> SEPARATE_ZVAL ( var ) ; <S2SV_EndBug> <S2SV_StartBug> convert_to_long ( * var ) ; <S2SV_EndBug> <S2SV_StartBug> points [ i ] . y = Z_LVAL_PP ( var ) ; <S2SV_EndBug> } } <S2SV_StartBug> if ( filled ) { <S2SV_EndBug> gdImageFilledPolygon ( im , points , npoints , col ) ; } else { gdImagePolygon ( im , points , npoints , col ) ; } efree ( points ) ; RETURN_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SUCCESS ) { if ( Z_TYPE_PP ( var ) != IS_LONG ) { zval lval ; lval = * * var ; zval_copy_ctor ( & lval <S2SV_ModEnd> ) ; convert_to_long <S2SV_ModStart> ; convert_to_long ( & lval <S2SV_ModEnd> ) ; points <S2SV_ModStart> . x = Z_LVAL ( lval ) ; } else { points [ i ] . x = <S2SV_ModStart> var ) ; } <S2SV_ModStart> SUCCESS ) { if ( Z_TYPE_PP ( var ) != IS_LONG ) { zval lval ; lval = * * var ; zval_copy_ctor ( & lval <S2SV_ModEnd> ) ; convert_to_long <S2SV_ModStart> ; convert_to_long ( & lval <S2SV_ModEnd> ) ; points <S2SV_ModStart> . y = Z_LVAL ( lval ) ; } else { points [ i ] . y = <S2SV_ModStart> ; } } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6978\n\n```\nCWE-415 void * gdImageGifPtr ( gdImagePtr im , int * size ) { void * rv ; gdIOCtx * out = gdNewDynamicCtx ( 2048 , NULL ) ; <S2SV_StartBug> gdImageGifCtx ( im , out ) ; <S2SV_EndBug> <S2SV_StartBug> rv = gdDPExtractData ( out , size ) ; <S2SV_EndBug> out -> gd_free ( out ) ; return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; if ( ! _gdImageGifCtx <S2SV_ModEnd> ( im , <S2SV_ModStart> , out ) ) { <S2SV_ModEnd> rv = gdDPExtractData <S2SV_ModStart> size ) ; } else { rv = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void decode_mb_mode_mvs ( VP8D_COMP * pbi , MODE_INFO * mi , MB_MODE_INFO * mbmi ) <S2SV_StartBug> { <S2SV_EndBug> if ( pbi -> mb . update_mb_segmentation_map ) read_mb_features ( & pbi -> mbc [ 8 ] , & mi -> mbmi , & pbi -> mb ) ; else if ( pbi -> common . frame_type == KEY_FRAME ) mi -> mbmi . segment_id = 0 ; if ( pbi -> common . mb_no_coeff_skip ) mi -> mbmi . mb_skip_coeff = vp8_read ( & pbi -> mbc [ 8 ] , pbi -> prob_skip_false ) ; else mi -> mbmi . mb_skip_coeff = 0 ; mi -> mbmi . is_4x4 = 0 ; if ( pbi -> common . frame_type == KEY_FRAME ) read_kf_modes ( pbi , mi ) ; else read_mb_modes_mv ( pbi , mi , & mi -> mbmi ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mbmi ) { ( void ) mbmi ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1959\n\n```\nCWE-264 static bool new_idmap_permitted ( const struct file * file , struct user_namespace * ns , int cap_setid , struct uid_gid_map * new_map ) { if ( ( new_map -> nr_extents == 1 ) && ( new_map -> extent [ 0 ] . count == 1 ) ) { u32 id = new_map -> extent [ 0 ] . lower_first ; if ( cap_setid == CAP_SETUID ) { kuid_t uid = make_kuid ( ns -> parent , id ) ; <S2SV_StartBug> if ( uid_eq ( uid , current_fsuid ( ) ) ) <S2SV_EndBug> return true ; } else if ( cap_setid == CAP_SETGID ) { kgid_t gid = make_kgid ( ns -> parent , id ) ; <S2SV_StartBug> if ( gid_eq ( gid , current_fsgid ( ) ) ) <S2SV_EndBug> return true ; } } if ( ! cap_valid ( cap_setid ) ) return true ; if ( ns_capable ( ns -> parent , cap_setid ) && file_ns_capable ( file , ns -> parent , cap_setid ) ) return true ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( uid , file -> f_cred -> fsuid <S2SV_ModEnd> ) ) return <S2SV_ModStart> ( gid , file -> f_cred -> fsgid <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 <S2SV_StartBug> static inline bool unconditional ( const struct ipt_ip * ip ) <S2SV_EndBug> { static const struct ipt_ip uncond ; <S2SV_StartBug> return memcmp ( ip , & uncond , sizeof ( uncond ) ) == 0 ; <S2SV_EndBug> # undef FWINV }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( const struct ipt_entry * e <S2SV_ModEnd> ) { static <S2SV_ModStart> uncond ; return e -> target_offset == sizeof ( struct ipt_entry ) && memcmp ( & e -> <S2SV_ModEnd> ip , &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1079\n\n```\nCWE-20 static int bnep_sock_ioctl ( struct socket * sock , unsigned int cmd , unsigned long arg ) { struct bnep_connlist_req cl ; struct bnep_connadd_req ca ; struct bnep_conndel_req cd ; struct bnep_conninfo ci ; struct socket * nsock ; void __user * argp = ( void __user * ) arg ; int err ; BT_DBG ( \"cmd<S2SV_blank>%x<S2SV_blank>arg<S2SV_blank>%lx\" , cmd , arg ) ; switch ( cmd ) { case BNEPCONNADD : if ( ! capable ( CAP_NET_ADMIN ) ) return - EACCES ; if ( copy_from_user ( & ca , argp , sizeof ( ca ) ) ) return - EFAULT ; nsock = sockfd_lookup ( ca . sock , & err ) ; if ( ! nsock ) return err ; if ( nsock -> sk -> sk_state != BT_CONNECTED ) { sockfd_put ( nsock ) ; return - EBADFD ; } <S2SV_StartBug> err = bnep_add_connection ( & ca , nsock ) ; <S2SV_EndBug> if ( ! err ) { if ( copy_to_user ( argp , & ca , sizeof ( ca ) ) ) err = - EFAULT ; } else sockfd_put ( nsock ) ; return err ; case BNEPCONNDEL : if ( ! capable ( CAP_NET_ADMIN ) ) return - EACCES ; if ( copy_from_user ( & cd , argp , sizeof ( cd ) ) ) return - EFAULT ; return bnep_del_connection ( & cd ) ; case BNEPGETCONNLIST : if ( copy_from_user ( & cl , argp , sizeof ( cl ) ) ) return - EFAULT ; if ( cl . cnum <= 0 ) return - EINVAL ; err = bnep_get_connlist ( & cl ) ; if ( ! err && copy_to_user ( argp , & cl , sizeof ( cl ) ) ) return - EFAULT ; return err ; case BNEPGETCONNINFO : if ( copy_from_user ( & ci , argp , sizeof ( ci ) ) ) return - EFAULT ; err = bnep_get_conninfo ( & ci ) ; if ( ! err && copy_to_user ( argp , & ci , sizeof ( ci ) ) ) return - EFAULT ; return err ; default : return - EINVAL ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EBADFD ; } ca . device [ sizeof ( ca . device ) - 1 ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8160\n\n```\nCWE-254 static bool generic_new ( struct nf_conn * ct , const struct sk_buff * skb , unsigned int dataoff , unsigned int * timeouts ) { <S2SV_StartBug> return true ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return nf_generic_should_process ( nf_ct_protonum ( ct ) ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void estimate_missing_mvs ( MB_OVERLAP * overlaps , MODE_INFO * mi , MODE_INFO * prev_mi , int mb_rows , int mb_cols , unsigned int first_corrupt ) { int mb_row , mb_col ; <S2SV_StartBug> vpx_memset ( overlaps , 0 , sizeof ( MB_OVERLAP ) * mb_rows * mb_cols ) ; <S2SV_EndBug> for ( mb_row = 0 ; mb_row < mb_rows ; ++ mb_row ) { for ( mb_col = 0 ; mb_col < mb_cols ; ++ mb_col ) { if ( prev_mi -> mbmi . ref_frame == LAST_FRAME ) { calc_prev_mb_overlaps ( overlaps , prev_mi , mb_row , mb_col , mb_rows , mb_cols ) ; } ++ prev_mi ; } ++ prev_mi ; } mb_row = first_corrupt / mb_cols ; mb_col = first_corrupt - mb_row * mb_cols ; mi += mb_row * ( mb_cols + 1 ) + mb_col ; for ( ; mb_row < mb_rows ; ++ mb_row ) { int mb_to_top_edge = - ( ( mb_row * 16 ) ) << 3 ; int mb_to_bottom_edge = ( ( mb_rows - 1 - mb_row ) * 16 ) << 3 ; for ( ; mb_col < mb_cols ; ++ mb_col ) { int mb_to_left_edge = - ( ( mb_col * 16 ) << 3 ) ; int mb_to_right_edge = ( ( mb_cols - 1 - mb_col ) * 16 ) << 3 ; const B_OVERLAP * block_overlaps = overlaps [ mb_row * mb_cols + mb_col ] . overlaps ; mi -> mbmi . ref_frame = LAST_FRAME ; mi -> mbmi . mode = SPLITMV ; mi -> mbmi . uv_mode = DC_PRED ; mi -> mbmi . partitioning = 3 ; mi -> mbmi . segment_id = 0 ; estimate_mb_mvs ( block_overlaps , mi , mb_to_left_edge , mb_to_right_edge , mb_to_top_edge , mb_to_bottom_edge ) ; ++ mi ; } mb_col = 0 ; ++ mi ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , mb_col ; memset <S2SV_ModEnd> ( overlaps ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10197\n\n```\nCWE-125 static char * search_make_new ( const struct search_state * const state , int n , const char * const base_name ) { const size_t base_len = strlen ( base_name ) ; <S2SV_StartBug> const char need_to_append_dot = base_name [ base_len - 1 ] == '.' ? 0 : 1 ; <S2SV_EndBug> <S2SV_StartBug> struct search_domain * dom ; <S2SV_EndBug> for ( dom = state -> head ; dom ; dom = dom -> next ) { if ( ! n -- ) { const u8 * const postfix = ( ( u8 * ) dom ) + sizeof ( struct search_domain ) ; const int postfix_len = dom -> len ; char * const newname = ( char * ) mm_malloc ( base_len + need_to_append_dot + postfix_len + 1 ) ; if ( ! newname ) return NULL ; memcpy ( newname , base_name , base_len ) ; if ( need_to_append_dot ) newname [ base_len ] = '.' ; memcpy ( newname + base_len + need_to_append_dot , postfix , postfix_len ) ; newname [ base_len + need_to_append_dot + postfix_len ] = 0 ; return newname ; } } EVUTIL_ASSERT ( 0 ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base_name ) ; char need_to_append_dot ; struct search_domain * dom ; if ( ! base_len ) return NULL ; <S2SV_ModEnd> need_to_append_dot = base_name <S2SV_ModStart> : 1 ; <S2SV_ModEnd> for ( dom\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2002-2443\n\n```\nCWE-20 static krb5_error_code process_chpw_request ( krb5_context context , void * server_handle , char * realm , krb5_keytab keytab , const krb5_fulladdr * local_faddr , const krb5_fulladdr * remote_faddr , krb5_data * req , krb5_data * rep ) { krb5_error_code ret ; char * ptr ; unsigned int plen , vno ; krb5_data ap_req , ap_rep = empty_data ( ) ; krb5_data cipher = empty_data ( ) , clear = empty_data ( ) ; krb5_auth_context auth_context = NULL ; krb5_principal changepw = NULL ; krb5_principal client , target = NULL ; krb5_ticket * ticket = NULL ; krb5_replay_data replay ; krb5_error krberror ; int numresult ; char strresult [ 1024 ] ; char * clientstr = NULL , * targetstr = NULL ; const char * errmsg = NULL ; size_t clen ; char * cdots ; struct sockaddr_storage ss ; socklen_t salen ; char addrbuf [ 100 ] ; krb5_address * addr = remote_faddr -> address ; * rep = empty_data ( ) ; if ( req -> length < 4 ) { ret = KRB5KRB_AP_ERR_MODIFIED ; numresult = KRB5_KPASSWD_MALFORMED ; strlcpy ( strresult , \"Request<S2SV_blank>was<S2SV_blank>truncated\" , sizeof ( strresult ) ) ; <S2SV_StartBug> goto chpwfail ; <S2SV_EndBug> } ptr = req -> data ; plen = ( * ptr ++ & 0xff ) ; plen = ( plen << 8 ) | ( * ptr ++ & 0xff ) ; if ( plen != req -> length ) { ret = KRB5KRB_AP_ERR_MODIFIED ; numresult = KRB5_KPASSWD_MALFORMED ; strlcpy ( strresult , \"Request<S2SV_blank>length<S2SV_blank>was<S2SV_blank>inconsistent\" , sizeof ( strresult ) ) ; <S2SV_StartBug> goto chpwfail ; <S2SV_EndBug> } vno = ( * ptr ++ & 0xff ) ; vno = ( vno << 8 ) | ( * ptr ++ & 0xff ) ; if ( vno != 1 && vno != RFC3244_VERSION ) { ret = KRB5KDC_ERR_BAD_PVNO ; numresult = KRB5_KPASSWD_BAD_VERSION ; snprintf ( strresult , sizeof ( strresult ) , \"Request<S2SV_blank>contained<S2SV_blank>unknown<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>number<S2SV_blank>%d\" , vno ) ; <S2SV_StartBug> goto chpwfail ; <S2SV_EndBug> } ap_req . length = ( * ptr ++ & 0xff ) ; ap_req . length = ( ap_req . length << 8 ) | ( * ptr ++ & 0xff ) ; if ( ptr + ap_req . length >= req -> data + req -> length ) { ret = KRB5KRB_AP_ERR_MODIFIED ; numresult = KRB5_KPASSWD_MALFORMED ; strlcpy ( strresult , \"Request<S2SV_blank>was<S2SV_blank>truncated<S2SV_blank>in<S2SV_blank>AP-REQ\" , sizeof ( strresult ) ) ; <S2SV_StartBug> goto chpwfail ; <S2SV_EndBug> } ap_req . data = ptr ; ptr += ap_req . length ; ret = krb5_auth_con_init ( context , & auth_context ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>initializing<S2SV_blank>auth<S2SV_blank>context\" , sizeof ( strresult ) ) ; goto chpwfail ; } ret = krb5_auth_con_setflags ( context , auth_context , KRB5_AUTH_CONTEXT_DO_SEQUENCE ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>initializing<S2SV_blank>auth<S2SV_blank>context\" , sizeof ( strresult ) ) ; goto chpwfail ; } ret = krb5_build_principal ( context , & changepw , strlen ( realm ) , realm , \"kadmin\" , \"changepw\" , NULL ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>building<S2SV_blank>kadmin/changepw<S2SV_blank>principal\" , sizeof ( strresult ) ) ; goto chpwfail ; } ret = krb5_rd_req ( context , & auth_context , & ap_req , changepw , keytab , NULL , & ticket ) ; if ( ret ) { numresult = KRB5_KPASSWD_AUTHERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>reading<S2SV_blank>application<S2SV_blank>request\" , sizeof ( strresult ) ) ; goto chpwfail ; } ret = krb5_mk_rep ( context , auth_context , & ap_rep ) ; if ( ret ) { numresult = KRB5_KPASSWD_AUTHERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>replying<S2SV_blank>to<S2SV_blank>application<S2SV_blank>request\" , sizeof ( strresult ) ) ; goto chpwfail ; } cipher . length = ( req -> data + req -> length ) - ptr ; cipher . data = ptr ; ret = krb5_rd_priv ( context , auth_context , & cipher , & clear , & replay ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>decrypting<S2SV_blank>request\" , sizeof ( strresult ) ) ; goto chpwfail ; } client = ticket -> enc_part2 -> client ; if ( vno == RFC3244_VERSION ) { krb5_data * clear_data ; ret = decode_krb5_setpw_req ( & clear , & clear_data , & target ) ; if ( ret != 0 ) { numresult = KRB5_KPASSWD_MALFORMED ; strlcpy ( strresult , \"Failed<S2SV_blank>decoding<S2SV_blank>ChangePasswdData\" , sizeof ( strresult ) ) ; goto chpwfail ; } zapfree ( clear . data , clear . length ) ; clear = * clear_data ; free ( clear_data ) ; if ( target != NULL ) { ret = krb5_unparse_name ( context , target , & targetstr ) ; if ( ret != 0 ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>unparsing<S2SV_blank>target<S2SV_blank>name<S2SV_blank>for<S2SV_blank>log\" , sizeof ( strresult ) ) ; goto chpwfail ; } } } ret = krb5_unparse_name ( context , client , & clientstr ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>unparsing<S2SV_blank>client<S2SV_blank>name<S2SV_blank>for<S2SV_blank>log\" , sizeof ( strresult ) ) ; goto chpwfail ; } if ( vno == 1 && ( ticket -> enc_part2 -> flags & TKT_FLG_INITIAL ) == 0 ) { numresult = KRB5_KPASSWD_INITIAL_FLAG_NEEDED ; strlcpy ( strresult , \"Ticket<S2SV_blank>must<S2SV_blank>be<S2SV_blank>derived<S2SV_blank>from<S2SV_blank>a<S2SV_blank>password\" , sizeof ( strresult ) ) ; goto chpwfail ; } ptr = k5memdup0 ( clear . data , clear . length , & ret ) ; ret = schpw_util_wrapper ( server_handle , client , target , ( ticket -> enc_part2 -> flags & TKT_FLG_INITIAL ) != 0 , ptr , NULL , strresult , sizeof ( strresult ) ) ; if ( ret ) errmsg = krb5_get_error_message ( context , ret ) ; zapfree ( clear . data , clear . length ) ; zapfree ( ptr , clear . length ) ; clear = empty_data ( ) ; clen = strlen ( clientstr ) ; trunc_name ( & clen , & cdots ) ; switch ( addr -> addrtype ) { case ADDRTYPE_INET : { struct sockaddr_in * sin = ss2sin ( & ss ) ; sin -> sin_family = AF_INET ; memcpy ( & sin -> sin_addr , addr -> contents , addr -> length ) ; sin -> sin_port = htons ( remote_faddr -> port ) ; salen = sizeof ( * sin ) ; break ; } case ADDRTYPE_INET6 : { struct sockaddr_in6 * sin6 = ss2sin6 ( & ss ) ; sin6 -> sin6_family = AF_INET6 ; memcpy ( & sin6 -> sin6_addr , addr -> contents , addr -> length ) ; sin6 -> sin6_port = htons ( remote_faddr -> port ) ; salen = sizeof ( * sin6 ) ; break ; } default : { struct sockaddr * sa = ss2sa ( & ss ) ; sa -> sa_family = AF_UNSPEC ; salen = sizeof ( * sa ) ; break ; } } if ( getnameinfo ( ss2sa ( & ss ) , salen , addrbuf , sizeof ( addrbuf ) , NULL , 0 , NI_NUMERICHOST | NI_NUMERICSERV ) != 0 ) strlcpy ( addrbuf , \"<unprintable>\" , sizeof ( addrbuf ) ) ; if ( vno == RFC3244_VERSION ) { size_t tlen ; char * tdots ; const char * targetp ; if ( target == NULL ) { tlen = clen ; tdots = cdots ; targetp = targetstr ; } else { tlen = strlen ( targetstr ) ; trunc_name ( & tlen , & tdots ) ; targetp = clientstr ; } krb5_klog_syslog ( LOG_NOTICE , _ ( \"setpw<S2SV_blank>request<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>by<S2SV_blank>%.*s%s<S2SV_blank>for<S2SV_blank>\" \"%.*s%s:<S2SV_blank>%s\" ) , addrbuf , ( int ) clen , clientstr , cdots , ( int ) tlen , targetp , tdots , errmsg ? errmsg : \"success\" ) ; } else { krb5_klog_syslog ( LOG_NOTICE , _ ( \"chpw<S2SV_blank>request<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>%.*s%s:<S2SV_blank>%s\" ) , addrbuf , ( int ) clen , clientstr , cdots , errmsg ? errmsg : \"success\" ) ; } switch ( ret ) { case KADM5_AUTH_CHANGEPW : numresult = KRB5_KPASSWD_ACCESSDENIED ; break ; case KADM5_PASS_Q_TOOSHORT : case KADM5_PASS_REUSE : case KADM5_PASS_Q_CLASS : case KADM5_PASS_Q_DICT : case KADM5_PASS_Q_GENERIC : case KADM5_PASS_TOOSOON : numresult = KRB5_KPASSWD_SOFTERROR ; break ; case 0 : numresult = KRB5_KPASSWD_SUCCESS ; strlcpy ( strresult , \"\" , sizeof ( strresult ) ) ; break ; default : numresult = KRB5_KPASSWD_HARDERROR ; break ; } chpwfail : clear . length = 2 + strlen ( strresult ) ; clear . data = ( char * ) malloc ( clear . length ) ; ptr = clear . data ; * ptr ++ = ( numresult >> 8 ) & 0xff ; * ptr ++ = numresult & 0xff ; memcpy ( ptr , strresult , strlen ( strresult ) ) ; cipher = empty_data ( ) ; if ( ap_rep . length ) { ret = krb5_auth_con_setaddrs ( context , auth_context , local_faddr -> address , NULL ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>storing<S2SV_blank>client<S2SV_blank>and<S2SV_blank>server<S2SV_blank>internet<S2SV_blank>addresses\" , sizeof ( strresult ) ) ; } else { ret = krb5_mk_priv ( context , auth_context , & clear , & cipher , & replay ) ; if ( ret ) { numresult = KRB5_KPASSWD_HARDERROR ; strlcpy ( strresult , \"Failed<S2SV_blank>encrypting<S2SV_blank>reply\" , sizeof ( strresult ) ) ; } } } if ( cipher . length == 0 ) { if ( ap_rep . length ) { free ( ap_rep . data ) ; ap_rep = empty_data ( ) ; } krberror . ctime = 0 ; krberror . cusec = 0 ; krberror . susec = 0 ; ret = krb5_timeofday ( context , & krberror . stime ) ; if ( ret ) goto bailout ; krberror . error = ret ; krberror . error -= ERROR_TABLE_BASE_krb5 ; if ( krberror . error < 0 || krberror . error > 128 ) krberror . error = KRB_ERR_GENERIC ; krberror . client = NULL ; ret = krb5_build_principal ( context , & krberror . server , strlen ( realm ) , realm , \"kadmin\" , \"changepw\" , NULL ) ; if ( ret ) goto bailout ; krberror . text . length = 0 ; krberror . e_data = clear ; ret = krb5_mk_error ( context , & krberror , & cipher ) ; krb5_free_principal ( context , krberror . server ) ; if ( ret ) goto bailout ; } ret = alloc_data ( rep , 6 + ap_rep . length + cipher . length ) ; if ( ret ) goto bailout ; ptr = rep -> data ; * ptr ++ = ( rep -> length >> 8 ) & 0xff ; * ptr ++ = rep -> length & 0xff ; * ptr ++ = 0 ; * ptr ++ = 1 ; * ptr ++ = ( ap_rep . length >> 8 ) & 0xff ; * ptr ++ = ap_rep . length & 0xff ; if ( ap_rep . length ) { memcpy ( ptr , ap_rep . data , ap_rep . length ) ; ptr += ap_rep . length ; } memcpy ( ptr , cipher . data , cipher . length ) ; bailout : krb5_auth_con_free ( context , auth_context ) ; krb5_free_principal ( context , changepw ) ; krb5_free_ticket ( context , ticket ) ; free ( ap_rep . data ) ; free ( clear . data ) ; free ( cipher . data ) ; krb5_free_principal ( context , target ) ; krb5_free_unparsed_name ( context , targetstr ) ; krb5_free_unparsed_name ( context , clientstr ) ; krb5_free_error_message ( context , errmsg ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; goto bailout <S2SV_ModEnd> ; } ptr <S2SV_ModStart> ) ; goto bailout <S2SV_ModEnd> ; } vno <S2SV_ModStart> ) ; goto bailout <S2SV_ModEnd> ; } ap_req <S2SV_ModStart> ) ; goto bailout <S2SV_ModEnd> ; } ap_req\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2007-6762\n\n```\nCWE-119 static int netlbl_cipsov4_add_common ( struct genl_info * info , struct cipso_v4_doi * doi_def ) { struct nlattr * nla ; int nla_rem ; u32 iter = 0 ; doi_def -> doi = nla_get_u32 ( info -> attrs [ NLBL_CIPSOV4_A_DOI ] ) ; if ( nla_validate_nested ( info -> attrs [ NLBL_CIPSOV4_A_TAGLST ] , NLBL_CIPSOV4_A_MAX , netlbl_cipsov4_genl_policy ) != 0 ) return - EINVAL ; nla_for_each_nested ( nla , info -> attrs [ NLBL_CIPSOV4_A_TAGLST ] , nla_rem ) if ( nla -> nla_type == NLBL_CIPSOV4_A_TAG ) { <S2SV_StartBug> if ( iter > CIPSO_V4_TAG_MAXCNT ) <S2SV_EndBug> return - EINVAL ; doi_def -> tags [ iter ++ ] = nla_get_u8 ( nla ) ; } <S2SV_StartBug> if ( iter < CIPSO_V4_TAG_MAXCNT ) <S2SV_EndBug> <S2SV_StartBug> doi_def -> tags [ iter ] = CIPSO_V4_TAG_INVALID ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( iter >= <S2SV_ModEnd> CIPSO_V4_TAG_MAXCNT ) return <S2SV_ModStart> ) ; } while <S2SV_ModEnd> ( iter < <S2SV_ModStart> tags [ iter ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t ftpClientOpenDir ( FtpClientContext * context , const char_t * path ) { error_t error ; if ( context == NULL || path == NULL ) return ERROR_INVALID_PARAMETER ; error = NO_ERROR ; while ( ! error ) { if ( context -> state == FTP_CLIENT_STATE_CONNECTED ) { error = ftpClientFormatCommand ( context , \"TYPE\" , \"A\" ) ; if ( ! error ) { ftpClientChangeState ( context , FTP_CLIENT_STATE_SUB_COMMAND_1 ) ; } } else if ( context -> state == FTP_CLIENT_STATE_SUB_COMMAND_1 ) { error = ftpClientSendCommand ( context ) ; if ( ! error ) { if ( FTP_REPLY_CODE_2YZ ( context -> replyCode ) ) { ftpClientChangeState ( context , FTP_CLIENT_STATE_SUB_COMMAND_2 ) ; } else { error = ERROR_UNEXPECTED_RESPONSE ; } } } else if ( context -> state == FTP_CLIENT_STATE_SUB_COMMAND_2 || context -> state == FTP_CLIENT_STATE_SUB_COMMAND_3 || context -> state == FTP_CLIENT_STATE_SUB_COMMAND_4 || context -> state == FTP_CLIENT_STATE_SUB_COMMAND_5 || context -> state == FTP_CLIENT_STATE_SUB_COMMAND_6 || context -> state == FTP_CLIENT_STATE_CONNECTING_TCP || context -> state == FTP_CLIENT_STATE_SUB_COMMAND_8 || context -> state == FTP_CLIENT_STATE_ACCEPTING_TCP || context -> state == FTP_CLIENT_STATE_CONNECTING_TLS ) { error = ftpClientInitDataTransfer ( context , FALSE ) ; } else if ( context -> state == FTP_CLIENT_STATE_SUB_COMMAND_7 ) { if ( ! osStrcmp ( path , \".\" ) ) <S2SV_StartBug> ftpClientFormatCommand ( context , \"LIST\" , NULL ) ; <S2SV_EndBug> <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> ftpClientFormatCommand ( context , \"LIST\" , path ) ; <S2SV_EndBug> if ( ! error ) { ftpClientChangeState ( context , FTP_CLIENT_STATE_SUB_COMMAND_8 ) ; } } else if ( context -> state == FTP_CLIENT_STATE_SUB_COMMAND_9 ) { context -> bufferPos = 0 ; context -> commandLen = 0 ; context -> replyLen = 0 ; ftpClientChangeState ( context , FTP_CLIENT_STATE_READING_DATA ) ; break ; } else { error = ERROR_WRONG_STATE ; } } if ( error == ERROR_WOULD_BLOCK || error == ERROR_TIMEOUT ) { error = ftpClientCheckTimeout ( context ) ; } if ( error != NO_ERROR && error != ERROR_WOULD_BLOCK ) { ftpClientCloseChannel ( & context -> dataChannel ) ; ftpClientChangeState ( context , FTP_CLIENT_STATE_CONNECTED ) ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \".\" ) ) { <S2SV_ModStart> NULL ) ; } else { <S2SV_ModEnd> ftpClientFormatCommand ( context <S2SV_ModStart> path ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7500\n\n```\nCWE-59 rpmVerifyAttrs rpmfilesVerify ( rpmfiles fi , int ix , rpmVerifyAttrs omitMask ) { rpm_mode_t fmode = rpmfilesFMode ( fi , ix ) ; rpmfileAttrs fileAttrs = rpmfilesFFlags ( fi , ix ) ; rpmVerifyAttrs flags = rpmfilesVFlags ( fi , ix ) ; const char * fn = rpmfilesFN ( fi , ix ) ; struct stat sb ; rpmVerifyAttrs vfy = RPMVERIFY_NONE ; switch ( rpmfilesFState ( fi , ix ) ) { case RPMFILE_STATE_NETSHARED : case RPMFILE_STATE_NOTINSTALLED : goto exit ; break ; case RPMFILE_STATE_REPLACED : flags = RPMVERIFY_LSTATFAIL ; break ; case RPMFILE_STATE_WRONGCOLOR : flags &= ~ ( RPMVERIFY_FILEDIGEST | RPMVERIFY_FILESIZE | RPMVERIFY_MTIME | RPMVERIFY_RDEV ) ; break ; case RPMFILE_STATE_NORMAL : case RPMFILE_STATE_MISSING : break ; } if ( fn == NULL || lstat ( fn , & sb ) != 0 ) { vfy |= RPMVERIFY_LSTATFAIL ; goto exit ; } <S2SV_StartBug> if ( S_ISDIR ( fmode ) && S_ISLNK ( sb . st_mode ) && stat ( fn , & sb ) != 0 ) { <S2SV_EndBug> vfy |= RPMVERIFY_LSTATFAIL ; goto exit ; } if ( S_ISLNK ( sb . st_mode ) ) flags &= ~ ( RPMVERIFY_MODE ) ; else flags &= ~ ( RPMVERIFY_LINKTO ) ; if ( ! S_ISREG ( sb . st_mode ) ) flags &= ~ ( RPMVERIFY_FILEDIGEST | RPMVERIFY_FILESIZE | RPMVERIFY_MTIME | RPMVERIFY_CAPS ) ; if ( fileAttrs & RPMFILE_GHOST ) flags &= ~ ( RPMVERIFY_FILEDIGEST | RPMVERIFY_FILESIZE | RPMVERIFY_MTIME | RPMVERIFY_LINKTO ) ; flags &= ~ ( omitMask | RPMVERIFY_FAILURES ) ; if ( flags & RPMVERIFY_FILEDIGEST ) { const unsigned char * digest ; int algo ; size_t diglen ; if ( ( digest = rpmfilesFDigest ( fi , ix , & algo , & diglen ) ) ) { unsigned char fdigest [ diglen ] ; rpm_loff_t fsize ; if ( rpmDoDigest ( algo , fn , 0 , fdigest , & fsize ) ) { vfy |= ( RPMVERIFY_READFAIL | RPMVERIFY_FILEDIGEST ) ; } else { sb . st_size = fsize ; if ( memcmp ( fdigest , digest , diglen ) ) vfy |= RPMVERIFY_FILEDIGEST ; } } else { vfy |= RPMVERIFY_FILEDIGEST ; } } if ( flags & RPMVERIFY_LINKTO ) { char linkto [ 1024 + 1 ] ; int size = 0 ; if ( ( size = readlink ( fn , linkto , sizeof ( linkto ) - 1 ) ) == - 1 ) vfy |= ( RPMVERIFY_READLINKFAIL | RPMVERIFY_LINKTO ) ; else { const char * flink = rpmfilesFLink ( fi , ix ) ; linkto [ size ] = '\\\\0' ; if ( flink == NULL || ! rstreq ( linkto , flink ) ) vfy |= RPMVERIFY_LINKTO ; } } if ( flags & RPMVERIFY_FILESIZE ) { if ( sb . st_size != rpmfilesFSize ( fi , ix ) ) vfy |= RPMVERIFY_FILESIZE ; } if ( flags & RPMVERIFY_MODE ) { rpm_mode_t metamode = fmode ; rpm_mode_t filemode ; filemode = ( rpm_mode_t ) sb . st_mode ; if ( fileAttrs & RPMFILE_GHOST ) { metamode &= ~ 0xf000 ; filemode &= ~ 0xf000 ; } if ( metamode != filemode ) vfy |= RPMVERIFY_MODE ; # if WITH_ACL acl_t facl = acl_get_file ( fn , ACL_TYPE_ACCESS ) ; if ( facl ) { if ( acl_equiv_mode ( facl , NULL ) == 1 ) { vfy |= RPMVERIFY_MODE ; } acl_free ( facl ) ; } # endif } if ( flags & RPMVERIFY_RDEV ) { if ( S_ISCHR ( fmode ) != S_ISCHR ( sb . st_mode ) || S_ISBLK ( fmode ) != S_ISBLK ( sb . st_mode ) ) { vfy |= RPMVERIFY_RDEV ; } else if ( S_ISDEV ( fmode ) && S_ISDEV ( sb . st_mode ) ) { rpm_rdev_t st_rdev = ( sb . st_rdev & 0xffff ) ; rpm_rdev_t frdev = ( rpmfilesFRdev ( fi , ix ) & 0xffff ) ; if ( st_rdev != frdev ) vfy |= RPMVERIFY_RDEV ; } } # if WITH_CAP if ( flags & RPMVERIFY_CAPS ) { cap_t cap , fcap ; cap = cap_from_text ( rpmfilesFCaps ( fi , ix ) ) ; if ( ! cap ) { cap = cap_from_text ( \"=\" ) ; } fcap = cap_get_file ( fn ) ; if ( ! fcap ) { fcap = cap_from_text ( \"=\" ) ; } if ( cap_compare ( cap , fcap ) != 0 ) vfy |= RPMVERIFY_CAPS ; cap_free ( fcap ) ; cap_free ( cap ) ; } # endif if ( ( flags & RPMVERIFY_MTIME ) && ( sb . st_mtime != rpmfilesFMtime ( fi , ix ) ) ) { vfy |= RPMVERIFY_MTIME ; } if ( flags & RPMVERIFY_USER ) { const char * name = rpmugUname ( sb . st_uid ) ; const char * fuser = rpmfilesFUser ( fi , ix ) ; uid_t uid ; int namematch = 0 ; int idmatch = 0 ; if ( name && fuser ) namematch = rstreq ( name , fuser ) ; if ( fuser && rpmugUid ( fuser , & uid ) == 0 ) idmatch = ( uid == sb . st_uid ) ; if ( namematch != idmatch ) { rpmlog ( RPMLOG_WARNING , _ ( \"Duplicate<S2SV_blank>username<S2SV_blank>or<S2SV_blank>UID<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\\\\n\" ) , fuser ) ; } if ( ! ( namematch || idmatch ) ) vfy |= RPMVERIFY_USER ; } if ( flags & RPMVERIFY_GROUP ) { const char * name = rpmugGname ( sb . st_gid ) ; const char * fgroup = rpmfilesFGroup ( fi , ix ) ; gid_t gid ; int namematch = 0 ; int idmatch = 0 ; if ( name && fgroup ) namematch = rstreq ( name , fgroup ) ; if ( fgroup && rpmugGid ( fgroup , & gid ) == 0 ) idmatch = ( gid == sb . st_gid ) ; if ( namematch != idmatch ) { rpmlog ( RPMLOG_WARNING , _ ( \"Duplicate<S2SV_blank>groupname<S2SV_blank>or<S2SV_blank>GID<S2SV_blank>for<S2SV_blank>group<S2SV_blank>%s\\\\n\" ) , fgroup ) ; } if ( ! ( namematch || idmatch ) ) vfy |= RPMVERIFY_GROUP ; } exit : return vfy ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . st_mode ) ) { struct stat dsb ; if ( stat ( fn , & dsb ) == 0 && S_ISDIR ( dsb . st_mode ) ) { uid_t fuid ; if ( sb . st_uid == 0 || ( rpmugUid ( rpmfilesFUser ( fi , ix ) , & fuid ) == 0 && sb . st_uid == fuid ) ) { sb = dsb ; } } <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5767\n\n```\nCWE-190 gdImagePtr gdImageCreate ( int sx , int sy ) { int i ; gdImagePtr im ; if ( overflow2 ( sx , sy ) ) { return NULL ; } if ( overflow2 ( sizeof ( unsigned char * ) , sy ) ) { return NULL ; } <S2SV_StartBug> im = ( gdImage * ) gdCalloc ( 1 , sizeof ( gdImage ) ) ; <S2SV_EndBug> im -> pixels = ( unsigned char * * ) gdMalloc ( sizeof ( unsigned char * ) * sy ) ; im -> AA_opacity = ( unsigned char * * ) gdMalloc ( sizeof ( unsigned char * ) * sy ) ; im -> polyInts = 0 ; im -> polyAllocated = 0 ; im -> brush = 0 ; im -> tile = 0 ; im -> style = 0 ; for ( i = 0 ; i < sy ; i ++ ) { im -> pixels [ i ] = ( unsigned char * ) gdCalloc ( sx , sizeof ( unsigned char ) ) ; im -> AA_opacity [ i ] = ( unsigned char * ) gdCalloc ( sx , sizeof ( unsigned char ) ) ; } im -> sx = sx ; im -> sy = sy ; im -> colorsTotal = 0 ; im -> transparent = ( - 1 ) ; im -> interlace = 0 ; im -> thick = 1 ; im -> AA = 0 ; im -> AA_polygon = 0 ; for ( i = 0 ; i < gdMaxColors ; i ++ ) { im -> open [ i ] = 1 ; im -> red [ i ] = 0 ; im -> green [ i ] = 0 ; im -> blue [ i ] = 0 ; } im -> trueColor = 0 ; im -> tpixels = 0 ; im -> cx1 = 0 ; im -> cy1 = 0 ; im -> cx2 = im -> sx - 1 ; im -> cy2 = im -> sy - 1 ; im -> interpolation = NULL ; im -> interpolation_id = GD_BILINEAR_FIXED ; return im ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } if ( overflow2 ( sizeof ( unsigned char * ) , sx ) ) { return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14763\n\n```\nCWE-189 void dwc3_gadget_giveback ( struct dwc3_ep * dep , struct dwc3_request * req , int status ) { struct dwc3 * dwc = dep -> dwc ; <S2SV_StartBug> req -> started = false ; <S2SV_EndBug> list_del ( & req -> list ) ; req -> remaining = 0 ; if ( req -> request . status == - EINPROGRESS ) req -> request . status = status ; if ( req -> trb ) usb_gadget_unmap_request_by_dev ( dwc -> sysdev , & req -> request , req -> direction ) ; req -> trb = NULL ; trace_dwc3_gadget_giveback ( req ) ; spin_unlock ( & dwc -> lock ) ; usb_gadget_giveback_request ( & dep -> endpoint , & req -> request ) ; spin_lock ( & dwc -> lock ) ; <S2SV_StartBug> if ( dep -> number > 1 ) <S2SV_EndBug> pm_runtime_put ( dwc -> dev ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> dwc ; dwc3_gadget_del_and_unmap_request ( dep , req , status <S2SV_ModEnd> ) ; spin_unlock <S2SV_ModStart> lock ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int jas_iccgetuint64 ( jas_stream_t * in , jas_iccuint64_t * val ) { <S2SV_StartBug> ulonglong tmp ; <S2SV_EndBug> if ( jas_iccgetuint ( in , 8 , & tmp ) ) return - 1 ; * val = tmp ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { jas_ulonglong <S2SV_ModEnd> tmp ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_rc_pick_q_and_bounds ( const VP9_COMP * cpi , int * bottom_index , int * top_index ) { int q ; <S2SV_StartBug> if ( cpi -> pass == 0 ) { <S2SV_EndBug> <S2SV_StartBug> if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) <S2SV_EndBug> q = rc_pick_q_and_bounds_one_pass_cbr ( cpi , bottom_index , top_index ) ; else q = rc_pick_q_and_bounds_one_pass_vbr ( cpi , bottom_index , top_index ) ; } else { q = rc_pick_q_and_bounds_two_pass ( cpi , bottom_index , top_index ) ; } if ( cpi -> sf . use_nonrd_pick_mode ) { <S2SV_StartBug> if ( q == 0 ) <S2SV_EndBug> q ++ ; if ( cpi -> sf . force_frame_boost == 1 ) q -= cpi -> sf . max_delta_qindex ; if ( q < * bottom_index ) * bottom_index = q ; else if ( q > * top_index ) * top_index = q ; } return q ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( cpi -> oxcf . <S2SV_ModStart> -> oxcf . rc_mode == VPX_CBR <S2SV_ModEnd> ) q = <S2SV_ModStart> { if ( <S2SV_ModEnd> cpi -> sf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6430\n\n```\nCWE-125 int write_output ( void ) { int fd ; struct filter_op * fop ; struct filter_header fh ; size_t ninst , i ; u_char * data ; ninst = compile_tree ( & fop ) ; if ( fop == NULL ) <S2SV_StartBug> return - E_NOTHANDLED ; <S2SV_EndBug> fd = open ( EF_GBL_OPTIONS -> output_file , O_CREAT | O_RDWR | O_TRUNC | O_BINARY , 0644 ) ; ON_ERROR ( fd , - 1 , \"Can\\'t<S2SV_blank>create<S2SV_blank>file<S2SV_blank>%s\" , EF_GBL_OPTIONS -> output_file ) ; fprintf ( stdout , \"<S2SV_blank>Writing<S2SV_blank>output<S2SV_blank>to<S2SV_blank>\\\\\\'%s\\\\\\'<S2SV_blank>\" , EF_GBL_OPTIONS -> output_file ) ; fflush ( stdout ) ; fh . magic = htons ( EC_FILTER_MAGIC ) ; strncpy ( fh . version , EC_VERSION , sizeof ( fh . version ) ) ; fh . data = sizeof ( fh ) ; data = create_data_segment ( & fh , fop , ninst ) ; write ( fd , & fh , sizeof ( struct filter_header ) ) ; write ( fd , data , fh . code - fh . data ) ; for ( i = 0 ; i <= ninst ; i ++ ) { print_progress_bar ( & fop [ i ] ) ; write ( fd , & fop [ i ] , sizeof ( struct filter_op ) ) ; } close ( fd ) ; fprintf ( stdout , \"<S2SV_blank>done.\\\\n\\\\n\" ) ; fprintf ( stdout , \"<S2SV_blank>-><S2SV_blank>Script<S2SV_blank>encoded<S2SV_blank>into<S2SV_blank>%d<S2SV_blank>instructions.\\\\n\\\\n\" , ( int ) ( i - 1 ) ) ; return E_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - E_NOTHANDLED ; if ( ninst == 0 ) return - E_INVALID\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static struct mnt_namespace * alloc_mnt_ns ( struct user_namespace * user_ns ) { struct mnt_namespace * new_ns ; struct ucounts * ucounts ; int ret ; ucounts = inc_mnt_namespaces ( user_ns ) ; if ( ! ucounts ) return ERR_PTR ( - ENOSPC ) ; new_ns = kmalloc ( sizeof ( struct mnt_namespace ) , GFP_KERNEL ) ; if ( ! new_ns ) { dec_mnt_namespaces ( ucounts ) ; return ERR_PTR ( - ENOMEM ) ; } ret = ns_alloc_inum ( & new_ns -> ns ) ; if ( ret ) { kfree ( new_ns ) ; dec_mnt_namespaces ( ucounts ) ; return ERR_PTR ( ret ) ; } new_ns -> ns . ops = & mntns_operations ; new_ns -> seq = atomic64_add_return ( 1 , & mnt_ns_seq ) ; atomic_set ( & new_ns -> count , 1 ) ; new_ns -> root = NULL ; INIT_LIST_HEAD ( & new_ns -> list ) ; init_waitqueue_head ( & new_ns -> poll ) ; new_ns -> event = 0 ; new_ns -> user_ns = get_user_ns ( user_ns ) ; new_ns -> ucounts = ucounts ; <S2SV_StartBug> return new_ns ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = ucounts ; new_ns -> mounts = 0 ; new_ns -> pending_mounts = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3152\n\n```\nCWE-284 int main ( int argc , char * * argv ) { MYSQL mysql ; option_string * eptr ; MY_INIT ( argv [ 0 ] ) ; my_getopt_use_args_separator = TRUE ; if ( load_defaults ( \"my\" , load_default_groups , & argc , & argv ) ) { my_end ( 0 ) ; exit ( 1 ) ; } my_getopt_use_args_separator = FALSE ; defaults_argv = argv ; if ( get_options ( & argc , & argv ) ) { free_defaults ( defaults_argv ) ; my_end ( 0 ) ; exit ( 1 ) ; } if ( auto_generate_sql ) srandom ( ( uint ) time ( NULL ) ) ; delimiter_length = strlen ( delimiter ) ; if ( argc > 2 ) { fprintf ( stderr , \"%s:<S2SV_blank>Too<S2SV_blank>many<S2SV_blank>arguments\\\\n\" , my_progname ) ; free_defaults ( defaults_argv ) ; my_end ( 0 ) ; exit ( 1 ) ; } mysql_init ( & mysql ) ; if ( opt_compress ) mysql_options ( & mysql , MYSQL_OPT_COMPRESS , NullS ) ; <S2SV_StartBug> # ifdef HAVE_OPENSSL <S2SV_EndBug> if ( opt_use_ssl ) { mysql_ssl_set ( & mysql , opt_ssl_key , opt_ssl_cert , opt_ssl_ca , opt_ssl_capath , opt_ssl_cipher ) ; mysql_options ( & mysql , MYSQL_OPT_SSL_CRL , opt_ssl_crl ) ; mysql_options ( & mysql , MYSQL_OPT_SSL_CRLPATH , opt_ssl_crlpath ) ; } # endif if ( opt_protocol ) mysql_options ( & mysql , MYSQL_OPT_PROTOCOL , ( char * ) & opt_protocol ) ; # if defined ( _WIN32 ) && ! defined ( EMBEDDED_LIBRARY ) if ( shared_memory_base_name ) mysql_options ( & mysql , MYSQL_SHARED_MEMORY_BASE_NAME , shared_memory_base_name ) ; # endif mysql_options ( & mysql , MYSQL_SET_CHARSET_NAME , default_charset ) ; if ( opt_plugin_dir && * opt_plugin_dir ) mysql_options ( & mysql , MYSQL_PLUGIN_DIR , opt_plugin_dir ) ; if ( opt_default_auth && * opt_default_auth ) mysql_options ( & mysql , MYSQL_DEFAULT_AUTH , opt_default_auth ) ; mysql_options ( & mysql , MYSQL_OPT_CONNECT_ATTR_RESET , 0 ) ; mysql_options4 ( & mysql , MYSQL_OPT_CONNECT_ATTR_ADD , \"program_name\" , \"mysqlslap\" ) ; if ( using_opt_enable_cleartext_plugin ) mysql_options ( & mysql , MYSQL_ENABLE_CLEARTEXT_PLUGIN , ( char * ) & opt_enable_cleartext_plugin ) ; if ( ! opt_only_print ) { if ( ! ( mysql_real_connect ( & mysql , host , user , opt_password , NULL , opt_mysql_port , opt_mysql_unix_port , connect_flags ) ) ) { fprintf ( stderr , \"%s:<S2SV_blank>Error<S2SV_blank>when<S2SV_blank>connecting<S2SV_blank>to<S2SV_blank>server:<S2SV_blank>%s\\\\n\" , my_progname , mysql_error ( & mysql ) ) ; free_defaults ( defaults_argv ) ; my_end ( 0 ) ; exit ( 1 ) ; } } pthread_mutex_init ( & counter_mutex , NULL ) ; pthread_cond_init ( & count_threshhold , NULL ) ; pthread_mutex_init ( & sleeper_mutex , NULL ) ; pthread_cond_init ( & sleep_threshhold , NULL ) ; eptr = engine_options ; do { uint * current ; if ( verbose >= 2 ) printf ( \"Starting<S2SV_blank>Concurrency<S2SV_blank>Test\\\\n\" ) ; if ( * concurrency ) { for ( current = concurrency ; current && * current ; current ++ ) concurrency_loop ( & mysql , * current , eptr ) ; } else { uint infinite = 1 ; do { concurrency_loop ( & mysql , infinite , eptr ) ; } while ( infinite ++ ) ; } if ( ! opt_preserve ) drop_schema ( & mysql , create_schema_string ) ; } while ( eptr ? ( eptr = eptr -> next ) : 0 ) ; pthread_mutex_destroy ( & counter_mutex ) ; pthread_cond_destroy ( & count_threshhold ) ; pthread_mutex_destroy ( & sleeper_mutex ) ; pthread_cond_destroy ( & sleep_threshhold ) ; if ( ! opt_only_print ) mysql_close ( & mysql ) ; my_free ( opt_password ) ; my_free ( concurrency ) ; statement_cleanup ( create_statements ) ; statement_cleanup ( query_statements ) ; statement_cleanup ( pre_statements ) ; statement_cleanup ( post_statements ) ; option_cleanup ( engine_options ) ; # if defined ( _WIN32 ) && ! defined ( EMBEDDED_LIBRARY ) my_free ( shared_memory_base_name ) ; # endif free_defaults ( defaults_argv ) ; my_end ( my_end_arg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NullS ) ; SSL_SET_OPTIONS ( & mysql ) ; <S2SV_ModEnd> if ( opt_protocol\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18193\n\n```\nCWE-119 bool f2fs_init_extent_tree ( struct inode * inode , struct f2fs_extent * i_ext ) { <S2SV_StartBug> struct f2fs_sb_info * sbi = F2FS_I_SB ( inode ) ; <S2SV_EndBug> struct extent_tree * et ; struct extent_node * en ; struct extent_info ei ; if ( ! f2fs_may_extent_tree ( inode ) ) { if ( i_ext && i_ext -> len ) { i_ext -> len = 0 ; return true ; } return false ; } et = __grab_extent_tree ( inode ) ; <S2SV_StartBug> if ( ! i_ext || ! i_ext -> len ) <S2SV_EndBug> return false ; get_extent_info ( & ei , i_ext ) ; write_lock ( & et -> lock ) ; if ( atomic_read ( & et -> node_cnt ) ) goto out ; en = __init_extent_tree ( sbi , et , & ei ) ; if ( en ) { spin_lock ( & sbi -> extent_lock ) ; list_add_tail ( & en -> list , & sbi -> extent_list ) ; spin_unlock ( & sbi -> extent_lock ) ; } out : write_unlock ( & et -> lock ) ; <S2SV_StartBug> return false ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i_ext ) { bool ret = __f2fs_init_extent_tree ( inode , i_ext <S2SV_ModEnd> ) ; if <S2SV_ModStart> if ( ! F2FS_I ( inode ) -> extent_tree ) set_inode_flag ( inode , FI_NO_EXTENT <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _hostsock_sendmsg ( oe_fd_t * sock_ , const struct oe_msghdr * msg , int flags ) { ssize_t ret = - 1 ; sock_t * sock = _cast_sock ( sock_ ) ; void * buf = NULL ; <S2SV_StartBug> size_t buf_size = 0 ; <S2SV_EndBug> oe_errno = 0 ; if ( ! sock || ! msg || ( msg -> msg_iovlen && ! msg -> msg_iov ) ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( oe_iov_pack ( msg -> msg_iov , ( int ) msg -> msg_iovlen , & buf , & buf_size ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> OE_RAISE_ERRNO ( OE_ENOMEM ) ; <S2SV_EndBug> if ( oe_syscall_sendmsg_ocall ( & ret , sock -> host_fd , msg -> msg_name , msg -> msg_namelen , buf , msg -> msg_iovlen , buf_size , msg -> msg_control , msg -> msg_controllen , flags ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> done : <S2SV_EndBug> if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t buf_size = 0 ; size_t data_size <S2SV_ModStart> , & buf_size , & data_size <S2SV_ModStart> OE_RAISE_ERRNO ( OE_ENOMEM ) ; if ( data_size > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL <S2SV_ModStart> ) ; } if ( ret > ( ssize_t ) data_size ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static stmt_ty <S2SV_StartBug> ast_for_for_stmt ( struct compiling * c , const node * n , int is_async ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> asdl_seq * _target , * seq = NULL , * suite_seq ; expr_ty expression ; expr_ty target , first ; const node * node_target ; int has_type_comment ; string type_comment ; if ( is_async && c -> c_feature_version < 5 ) { ast_error ( c , n , \"Async<S2SV_blank>for<S2SV_blank>loops<S2SV_blank>are<S2SV_blank>only<S2SV_blank>supported<S2SV_blank>in<S2SV_blank>Python<S2SV_blank>3.5<S2SV_blank>and<S2SV_blank>greater\" ) ; return NULL ; } REQ ( n , for_stmt ) ; has_type_comment = TYPE ( CHILD ( n , 5 ) ) == TYPE_COMMENT ; if ( NCH ( n ) == 9 + has_type_comment ) { seq = ast_for_suite ( c , CHILD ( n , 8 + has_type_comment ) ) ; if ( ! seq ) return NULL ; } node_target = CHILD ( n , 1 ) ; _target = ast_for_exprlist ( c , node_target , Store ) ; if ( ! _target ) return NULL ; first = ( expr_ty ) asdl_seq_GET ( _target , 0 ) ; if ( NCH ( node_target ) == 1 ) target = first ; else target = Tuple ( _target , Store , first -> lineno , first -> col_offset , c -> c_arena ) ; expression = ast_for_testlist ( c , CHILD ( n , 3 ) ) ; if ( ! expression ) return NULL ; suite_seq = ast_for_suite ( c , CHILD ( n , 5 + has_type_comment ) ) ; if ( ! suite_seq ) return NULL ; if ( has_type_comment ) type_comment = NEW_TYPE_COMMENT ( CHILD ( n , 5 ) ) ; else type_comment = NULL ; if ( is_async ) return AsyncFor ( target , expression , suite_seq , seq , <S2SV_StartBug> type_comment , LINENO ( n ) , n -> n_col_offset , <S2SV_EndBug> c -> c_arena ) ; else return For ( target , expression , suite_seq , seq , type_comment , LINENO ( n ) , n -> n_col_offset , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const node * n0 , bool <S2SV_ModEnd> is_async ) { <S2SV_ModStart> is_async ) { const node * const n = is_async ? CHILD ( n0 , 1 ) : n0 ; <S2SV_ModStart> , LINENO ( n0 ) , n0 <S2SV_ModEnd> -> n_col_offset ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7115\n\n```\nCWE-119 int add_control_packet ( struct mt_packet * packet , enum mt_cptype cptype , void * cpdata , unsigned short data_len ) { unsigned char * data = packet -> data + packet -> size ; unsigned int act_size = data_len + ( cptype == MT_CPTYPE_PLAINDATA ? 0 : MT_CPHEADER_LEN ) ; <S2SV_StartBug> if ( packet -> size + act_size > MT_PACKET_LEN ) { <S2SV_EndBug> fprintf ( stderr , _ ( \"add_control_packet:<S2SV_blank>ERROR,<S2SV_blank>too<S2SV_blank>large<S2SV_blank>packet.<S2SV_blank>Exceeds<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" ) , MT_PACKET_LEN ) ; return - 1 ; } if ( cptype == MT_CPTYPE_PLAINDATA ) { memcpy ( data , cpdata , data_len ) ; packet -> size += data_len ; return data_len ; } memcpy ( data , mt_mactelnet_cpmagic , sizeof ( mt_mactelnet_cpmagic ) ) ; data [ 4 ] = cptype ; # if BYTE_ORDER == LITTLE_ENDIAN { unsigned int templen ; templen = htonl ( data_len ) ; memcpy ( data + 5 , & templen , sizeof ( templen ) ) ; } # else memcpy ( data + 5 , & data_len , sizeof ( data_len ) ) ; # endif if ( data_len > 0 ) { memcpy ( data + MT_CPHEADER_LEN , cpdata , data_len ) ; } packet -> size += act_size ; return act_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> act_size > MT_PACKET_LEN <S2SV_ModStart> act_size > MT_PACKET_LEN - packet -> size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 IMPEG2D_ERROR_CODES_T impeg2d_dec_seq_ext_data ( dec_state_t * ps_dec ) { stream_t * ps_stream ; UWORD32 u4_start_code ; IMPEG2D_ERROR_CODES_T e_error ; e_error = ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; ps_stream = & ps_dec -> s_bit_stream ; u4_start_code = impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) ; while ( ( u4_start_code == EXTENSION_START_CODE || u4_start_code == USER_DATA_START_CODE ) && <S2SV_StartBug> ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE == e_error ) <S2SV_EndBug> { if ( u4_start_code == USER_DATA_START_CODE ) { impeg2d_dec_user_data ( ps_dec ) ; } else { impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; u4_start_code = impeg2d_bit_stream_nxt ( ps_stream , EXT_ID_LEN ) ; switch ( u4_start_code ) { case SEQ_DISPLAY_EXT_ID : impeg2d_dec_seq_disp_ext ( ps_dec ) ; break ; case SEQ_SCALABLE_EXT_ID : e_error = IMPEG2D_SCALABILITIY_NOT_SUPPORTED ; break ; default : impeg2d_bit_stream_flush ( ps_stream , EXT_ID_LEN ) ; impeg2d_peek_next_start_code ( ps_dec ) ; break ; } } u4_start_code = impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) ; } return e_error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IVD_ERROR_NONE == e_error && ( ps_stream -> u4_offset < ps_stream -> u4_max_offset )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14354\n\n```\nCWE-77 int imap_subscribe ( char * path , bool subscribe ) { struct ImapData * idata = NULL ; char buf [ LONG_STRING ] ; char mbox [ LONG_STRING ] ; char errstr [ STRING ] ; struct Buffer err , token ; struct ImapMbox mx ; <S2SV_StartBug> if ( ! mx_is_imap ( path ) || imap_parse_path ( path , & mx ) || ! mx . mbox ) <S2SV_EndBug> { mutt_error ( _ ( \"Bad<S2SV_blank>mailbox<S2SV_blank>name\" ) ) ; return - 1 ; } idata = imap_conn_find ( & ( mx . account ) , 0 ) ; if ( ! idata ) goto fail ; imap_fix_path ( idata , mx . mbox , buf , sizeof ( buf ) ) ; if ( ! * buf ) mutt_str_strfcpy ( buf , \"INBOX\" , sizeof ( buf ) ) ; if ( ImapCheckSubscribed ) { mutt_buffer_init ( & token ) ; mutt_buffer_init ( & err ) ; err . data = errstr ; err . dsize = sizeof ( errstr ) ; <S2SV_StartBug> snprintf ( mbox , sizeof ( mbox ) , \"%smailboxes<S2SV_blank>\\\\\"%s\\\\\"\" , subscribe ? \"\" : \"un\" , path ) ; <S2SV_EndBug> if ( mutt_parse_rc_line ( mbox , & token , & err ) ) mutt_debug ( 1 , \"Error<S2SV_blank>adding<S2SV_blank>subscribed<S2SV_blank>mailbox:<S2SV_blank>%s\\\\n\" , errstr ) ; FREE ( & token . data ) ; } if ( subscribe ) mutt_message ( _ ( \"Subscribing<S2SV_blank>to<S2SV_blank>%s...\" ) , buf ) ; else mutt_message ( _ ( \"Unsubscribing<S2SV_blank>from<S2SV_blank>%s...\" ) , buf ) ; imap_munge_mbox_name ( idata , mbox , sizeof ( mbox ) , buf ) ; snprintf ( buf , sizeof ( buf ) , \"%sSUBSCRIBE<S2SV_blank>%s\" , subscribe ? \"\" : \"UN\" , mbox ) ; if ( imap_exec ( idata , buf , 0 ) < 0 ) goto fail ; imap_unmunge_mbox_name ( idata , mx . mbox ) ; if ( subscribe ) mutt_message ( _ ( \"Subscribed<S2SV_blank>to<S2SV_blank>%s\" ) , mx . mbox ) ; else mutt_message ( _ ( \"Unsubscribed<S2SV_blank>from<S2SV_blank>%s\" ) , mx . mbox ) ; FREE ( & mx . mbox ) ; return 0 ; fail : FREE ( & mx . mbox ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ImapMbox mx ; size_t len = 0 ; <S2SV_ModStart> errstr ) ; len = <S2SV_ModStart> mbox ) , \"%smailboxes<S2SV_blank>\" <S2SV_ModEnd> , subscribe ? <S2SV_ModStart> \"\" : \"un\" ) ; imap_quote_string ( mbox + len , sizeof ( mbox ) - len , path , true <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8828\n\n```\nCWE-787 int tmx_check_pretran ( sip_msg_t * msg ) { unsigned int chid ; unsigned int slotid ; int dsize ; struct via_param * vbr ; str scallid ; str scseqmet ; str scseqnum ; str sftag ; str svbranch = { NULL , 0 } ; pretran_t * it ; if ( _tmx_ptran_table == NULL ) { LM_ERR ( \"pretran<S2SV_blank>hash<S2SV_blank>table<S2SV_blank>not<S2SV_blank>initialized<S2SV_blank>yet\\\\n\" ) ; return - 1 ; } if ( get_route_type ( ) != REQUEST_ROUTE ) { LM_ERR ( \"invalid<S2SV_blank>usage<S2SV_blank>-<S2SV_blank>not<S2SV_blank>in<S2SV_blank>request<S2SV_blank>route\\\\n\" ) ; return - 1 ; } if ( msg -> first_line . type != SIP_REQUEST ) { LM_ERR ( \"invalid<S2SV_blank>usage<S2SV_blank>-<S2SV_blank>not<S2SV_blank>a<S2SV_blank>sip<S2SV_blank>request\\\\n\" ) ; return - 1 ; } if ( parse_headers ( msg , HDR_FROM_F | HDR_VIA1_F | HDR_CALLID_F | HDR_CSEQ_F , 0 ) < 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>required<S2SV_blank>headers\\\\n\" ) ; return - 1 ; } if ( msg -> cseq == NULL || msg -> cseq -> parsed == NULL ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>cseq<S2SV_blank>headers\\\\n\" ) ; return - 1 ; } if ( get_cseq ( msg ) -> method_id == METHOD_ACK || get_cseq ( msg ) -> method_id == METHOD_CANCEL ) { LM_DBG ( \"no<S2SV_blank>pre-transaction<S2SV_blank>management<S2SV_blank>for<S2SV_blank>ACK<S2SV_blank>or<S2SV_blank>CANCEL\\\\n\" ) ; return - 1 ; } if ( msg -> via1 == 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>Via<S2SV_blank>header\\\\n\" ) ; return - 1 ; } if ( parse_from_header ( msg ) < 0 || get_from ( msg ) -> tag_value . len == 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>From<S2SV_blank>header\\\\n\" ) ; return - 1 ; } if ( msg -> callid == NULL || msg -> callid -> body . s == NULL ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>callid<S2SV_blank>headers\\\\n\" ) ; return - 1 ; } vbr = msg -> via1 -> branch ; scallid = msg -> callid -> body ; trim ( & scallid ) ; scseqmet = get_cseq ( msg ) -> method ; trim ( & scseqmet ) ; scseqnum = get_cseq ( msg ) -> number ; trim ( & scseqnum ) ; sftag = get_from ( msg ) -> tag_value ; trim ( & sftag ) ; chid = get_hash1_raw ( msg -> callid -> body . s , msg -> callid -> body . len ) ; slotid = chid & ( _tmx_ptran_size - 1 ) ; if ( unlikely ( _tmx_proc_ptran == NULL ) ) { _tmx_proc_ptran = ( pretran_t * ) shm_malloc ( sizeof ( pretran_t ) ) ; if ( _tmx_proc_ptran == NULL ) { LM_ERR ( \"not<S2SV_blank>enough<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>pretran<S2SV_blank>structure\\\\n\" ) ; return - 1 ; } memset ( _tmx_proc_ptran , 0 , sizeof ( pretran_t ) ) ; _tmx_proc_ptran -> pid = my_pid ( ) ; } dsize = scallid . len + scseqnum . len + scseqmet . len + sftag . len + 4 ; if ( likely ( vbr != NULL ) ) { svbranch = vbr -> value ; trim ( & svbranch ) ; <S2SV_StartBug> dsize += svbranch . len ; <S2SV_EndBug> } if ( dsize < 256 ) dsize = 256 ; tmx_pretran_unlink ( ) ; if ( dsize > _tmx_proc_ptran -> dbuf . len ) { if ( _tmx_proc_ptran -> dbuf . s ) shm_free ( _tmx_proc_ptran -> dbuf . s ) ; _tmx_proc_ptran -> dbuf . s = ( char * ) shm_malloc ( dsize ) ; if ( _tmx_proc_ptran -> dbuf . s == NULL ) { LM_ERR ( \"not<S2SV_blank>enough<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>pretran<S2SV_blank>data\\\\n\" ) ; return - 1 ; } _tmx_proc_ptran -> dbuf . len = dsize ; } _tmx_proc_ptran -> hid = chid ; _tmx_proc_ptran -> cseqmetid = ( get_cseq ( msg ) ) -> method_id ; _tmx_proc_ptran -> callid . s = _tmx_proc_ptran -> dbuf . s ; memcpy ( _tmx_proc_ptran -> callid . s , scallid . s , scallid . len ) ; _tmx_proc_ptran -> callid . len = scallid . len ; _tmx_proc_ptran -> callid . s [ _tmx_proc_ptran -> callid . len ] = '\\\\0' ; _tmx_proc_ptran -> ftag . s = _tmx_proc_ptran -> callid . s + _tmx_proc_ptran -> callid . len + 1 ; memcpy ( _tmx_proc_ptran -> ftag . s , sftag . s , sftag . len ) ; _tmx_proc_ptran -> ftag . len = sftag . len ; _tmx_proc_ptran -> ftag . s [ _tmx_proc_ptran -> ftag . len ] = '\\\\0' ; _tmx_proc_ptran -> cseqnum . s = _tmx_proc_ptran -> ftag . s + _tmx_proc_ptran -> ftag . len + 1 ; memcpy ( _tmx_proc_ptran -> cseqnum . s , scseqnum . s , scseqnum . len ) ; _tmx_proc_ptran -> cseqnum . len = scseqnum . len ; _tmx_proc_ptran -> cseqnum . s [ _tmx_proc_ptran -> cseqnum . len ] = '\\\\0' ; _tmx_proc_ptran -> cseqmet . s = _tmx_proc_ptran -> cseqnum . s + _tmx_proc_ptran -> cseqnum . len + 1 ; memcpy ( _tmx_proc_ptran -> cseqmet . s , scseqmet . s , scseqmet . len ) ; _tmx_proc_ptran -> cseqmet . len = scseqmet . len ; _tmx_proc_ptran -> cseqmet . s [ _tmx_proc_ptran -> cseqmet . len ] = '\\\\0' ; if ( likely ( vbr != NULL ) ) { _tmx_proc_ptran -> vbranch . s = _tmx_proc_ptran -> cseqmet . s + _tmx_proc_ptran -> cseqmet . len + 1 ; memcpy ( _tmx_proc_ptran -> vbranch . s , svbranch . s , svbranch . len ) ; _tmx_proc_ptran -> vbranch . len = svbranch . len ; _tmx_proc_ptran -> vbranch . s [ _tmx_proc_ptran -> vbranch . len ] = '\\\\0' ; } else { _tmx_proc_ptran -> vbranch . s = NULL ; _tmx_proc_ptran -> vbranch . len = 0 ; } lock_get ( & _tmx_ptran_table [ slotid ] . lock ) ; it = _tmx_ptran_table [ slotid ] . plist ; tmx_pretran_link_safe ( slotid ) ; for ( ; it != NULL ; it = it -> next ) { if ( _tmx_proc_ptran -> hid != it -> hid || _tmx_proc_ptran -> cseqmetid != it -> cseqmetid || _tmx_proc_ptran -> callid . len != it -> callid . len || _tmx_proc_ptran -> ftag . len != it -> ftag . len || _tmx_proc_ptran -> cseqmet . len != it -> cseqmet . len || _tmx_proc_ptran -> cseqnum . len != it -> cseqnum . len ) continue ; if ( _tmx_proc_ptran -> vbranch . s != NULL && it -> vbranch . s != NULL ) { if ( _tmx_proc_ptran -> vbranch . len != it -> vbranch . len ) continue ; if ( _tmx_proc_ptran -> vbranch . s [ it -> vbranch . len - 1 ] != it -> vbranch . s [ it -> vbranch . len - 1 ] ) continue ; if ( memcmp ( _tmx_proc_ptran -> vbranch . s , it -> vbranch . s , it -> vbranch . len ) != 0 ) continue ; } if ( memcmp ( _tmx_proc_ptran -> callid . s , it -> callid . s , it -> callid . len ) != 0 || memcmp ( _tmx_proc_ptran -> ftag . s , it -> ftag . s , it -> ftag . len ) != 0 || memcmp ( _tmx_proc_ptran -> cseqnum . s , it -> cseqnum . s , it -> cseqnum . len ) != 0 ) continue ; if ( ( it -> cseqmetid == METHOD_OTHER || it -> cseqmetid == METHOD_UNDEF ) && memcmp ( _tmx_proc_ptran -> cseqmet . s , it -> cseqmet . s , it -> cseqmet . len ) != 0 ) continue ; LM_DBG ( \"matched<S2SV_blank>another<S2SV_blank>pre-transaction<S2SV_blank>by<S2SV_blank>pid<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>[%.*s]\\\\n\" , it -> pid , it -> callid . len , it -> callid . s ) ; lock_release ( & _tmx_ptran_table [ slotid ] . lock ) ; return 1 ; } lock_release ( & _tmx_ptran_table [ slotid ] . lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svbranch . len + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14358\n\n```\nCWE-119 static int msg_parse_fetch ( struct ImapHeader * h , char * s ) { char tmp [ SHORT_STRING ] ; char * ptmp = NULL ; if ( ! s ) return - 1 ; while ( * s ) { SKIPWS ( s ) ; if ( mutt_str_strncasecmp ( \"FLAGS\" , s , 5 ) == 0 ) { s = msg_parse_flags ( h , s ) ; if ( ! s ) return - 1 ; } else if ( mutt_str_strncasecmp ( \"UID\" , s , 3 ) == 0 ) { s += 3 ; SKIPWS ( s ) ; if ( mutt_str_atoui ( s , & h -> data -> uid ) < 0 ) return - 1 ; s = imap_next_word ( s ) ; } else if ( mutt_str_strncasecmp ( \"INTERNALDATE\" , s , 12 ) == 0 ) { s += 12 ; SKIPWS ( s ) ; if ( * s != \\'\\\\\"\\' ) { mutt_debug ( 1 , \"bogus<S2SV_blank>INTERNALDATE<S2SV_blank>entry:<S2SV_blank>%s\\\\n\" , s ) ; return - 1 ; } s ++ ; ptmp = tmp ; <S2SV_StartBug> while ( * s && * s != \\'\\\\\"\\' ) <S2SV_EndBug> * ptmp ++ = * s ++ ; if ( * s != \\'\\\\\"\\' ) return - 1 ; s ++ ; * ptmp = '\\\\0' ; h -> received = mutt_date_parse_imap ( tmp ) ; } else if ( mutt_str_strncasecmp ( \"RFC822.SIZE\" , s , 11 ) == 0 ) { s += 11 ; SKIPWS ( s ) ; ptmp = tmp ; <S2SV_StartBug> while ( isdigit ( ( unsigned char ) * s ) ) <S2SV_EndBug> * ptmp ++ = * s ++ ; * ptmp = '\\\\0' ; if ( mutt_str_atol ( tmp , & h -> content_length ) < 0 ) return - 1 ; } else if ( ( mutt_str_strncasecmp ( \"BODY\" , s , 4 ) == 0 ) || ( mutt_str_strncasecmp ( \"RFC822.HEADER\" , s , 13 ) == 0 ) ) { return - 2 ; } else if ( * s == ')' ) s ++ ; else if ( * s ) { imap_error ( \"msg_parse_fetch\" , s ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * s && ( <S2SV_ModStart> s != \\'\\\\\"\\' ) && ( ptmp != ( tmp + sizeof ( tmp ) - 1 ) ) <S2SV_ModStart> ) * s ) && ( ptmp != ( tmp + sizeof ( tmp ) - 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8896\n\n```\nCWE-000 static Image * ReadICONImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { IconFile icon_file ; IconInfo icon_info ; Image * image ; MagickBooleanType status ; register ssize_t i , x ; register Quantum * q ; register unsigned char * p ; size_t bit , byte , bytes_per_line , one , scanline_pad ; ssize_t count , offset , y ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } icon_file . reserved = ( short ) ReadBlobLSBShort ( image ) ; icon_file . resource_type = ( short ) ReadBlobLSBShort ( image ) ; icon_file . count = ( short ) ReadBlobLSBShort ( image ) ; if ( ( icon_file . reserved != 0 ) || ( ( icon_file . resource_type != 1 ) && ( icon_file . resource_type != 2 ) ) || ( icon_file . count > MaxIcons ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; for ( i = 0 ; i < icon_file . count ; i ++ ) { icon_file . directory [ i ] . width = ( unsigned char ) ReadBlobByte ( image ) ; icon_file . directory [ i ] . height = ( unsigned char ) ReadBlobByte ( image ) ; icon_file . directory [ i ] . colors = ( unsigned char ) ReadBlobByte ( image ) ; icon_file . directory [ i ] . reserved = ( unsigned char ) ReadBlobByte ( image ) ; icon_file . directory [ i ] . planes = ( unsigned short ) ReadBlobLSBShort ( image ) ; icon_file . directory [ i ] . bits_per_pixel = ( unsigned short ) ReadBlobLSBShort ( image ) ; icon_file . directory [ i ] . size = ReadBlobLSBLong ( image ) ; icon_file . directory [ i ] . offset = ReadBlobLSBLong ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } one = 1 ; for ( i = 0 ; i < icon_file . count ; i ++ ) { offset = ( ssize_t ) SeekBlob ( image , ( MagickOffsetType ) icon_file . directory [ i ] . offset , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; icon_info . size = ReadBlobLSBLong ( image ) ; icon_info . width = ( unsigned char ) ( ( int ) ReadBlobLSBLong ( image ) ) ; icon_info . height = ( unsigned char ) ( ( int ) ReadBlobLSBLong ( image ) / 2 ) ; icon_info . planes = ReadBlobLSBShort ( image ) ; icon_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( ( ( icon_info . planes == 18505 ) && ( icon_info . bits_per_pixel == 21060 ) ) || ( icon_info . size == 0x474e5089 ) ) { Image * icon_image ; ImageInfo * read_info ; size_t length ; unsigned char * png ; <S2SV_StartBug> length = icon_file . directory [ i ] . size ; <S2SV_EndBug> png = ( unsigned char * ) AcquireQuantumMemory ( length + 16 , sizeof ( * png ) ) ; if ( png == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) CopyMagickMemory ( png , \"\\\\211PNG\\\\r\\\\n\\\\032\\\\n\\\\000\\\\000\\\\000\\\\015\" , 12 ) ; png [ 12 ] = ( unsigned char ) icon_info . planes ; png [ 13 ] = ( unsigned char ) ( icon_info . planes >> 8 ) ; png [ 14 ] = ( unsigned char ) icon_info . bits_per_pixel ; png [ 15 ] = ( unsigned char ) ( icon_info . bits_per_pixel >> 8 ) ; count = ReadBlob ( image , length - 16 , png + 16 ) ; icon_image = ( Image * ) NULL ; if ( count > 0 ) { read_info = CloneImageInfo ( image_info ) ; ( void ) CopyMagickString ( read_info -> magick , \"PNG\" , MagickPathExtent ) ; icon_image = BlobToImage ( read_info , png , length + 16 , exception ) ; read_info = DestroyImageInfo ( read_info ) ; } png = ( unsigned char * ) RelinquishMagickMemory ( png ) ; if ( icon_image == ( Image * ) NULL ) { if ( count != ( ssize_t ) ( length - 16 ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } DestroyBlob ( icon_image ) ; icon_image -> blob = ReferenceBlob ( image -> blob ) ; ReplaceImageInList ( & image , icon_image ) ; } else { if ( icon_info . bits_per_pixel > 32 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; icon_info . compression = ReadBlobLSBLong ( image ) ; icon_info . image_size = ReadBlobLSBLong ( image ) ; icon_info . x_pixels = ReadBlobLSBLong ( image ) ; icon_info . y_pixels = ReadBlobLSBLong ( image ) ; icon_info . number_colors = ReadBlobLSBLong ( image ) ; icon_info . colors_important = ReadBlobLSBLong ( image ) ; image -> alpha_trait = BlendPixelTrait ; image -> columns = ( size_t ) icon_file . directory [ i ] . width ; if ( ( ssize_t ) image -> columns > icon_info . width ) image -> columns = ( size_t ) icon_info . width ; if ( image -> columns == 0 ) image -> columns = 256 ; image -> rows = ( size_t ) icon_file . directory [ i ] . height ; if ( ( ssize_t ) image -> rows > icon_info . height ) image -> rows = ( size_t ) icon_info . height ; if ( image -> rows == 0 ) image -> rows = 256 ; image -> depth = icon_info . bits_per_pixel ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank>scene<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%.20g\" , ( double ) i ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>size<S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%.20g\" , ( double ) icon_info . size ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>width<S2SV_blank><S2SV_blank>=<S2SV_blank>%.20g\" , ( double ) icon_file . directory [ i ] . width ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>height<S2SV_blank>=<S2SV_blank>%.20g\" , ( double ) icon_file . directory [ i ] . height ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>colors<S2SV_blank>=<S2SV_blank>%.20g\" , ( double ) icon_info . number_colors ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>planes<S2SV_blank>=<S2SV_blank>%.20g\" , ( double ) icon_info . planes ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank>bpp<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>=<S2SV_blank>%.20g\" , ( double ) icon_info . bits_per_pixel ) ; } if ( ( icon_info . number_colors != 0 ) || ( icon_info . bits_per_pixel <= 16U ) ) { image -> storage_class = PseudoClass ; image -> colors = icon_info . number_colors ; if ( image -> colors == 0 ) image -> colors = one << icon_info . bits_per_pixel ; } if ( image -> storage_class == PseudoClass ) { register ssize_t i ; unsigned char * icon_colormap ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; icon_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) image -> colors , 4UL * sizeof ( * icon_colormap ) ) ; if ( icon_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) ( 4 * image -> colors ) , icon_colormap ) ; if ( count != ( ssize_t ) ( 4 * image -> colors ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; p = icon_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . blue = ( Quantum ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ( Quantum ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . red = ( Quantum ) ScaleCharToQuantum ( * p ++ ) ; p ++ ; } icon_colormap = ( unsigned char * ) RelinquishMagickMemory ( icon_colormap ) ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; bytes_per_line = ( ( ( image -> columns * icon_info . bits_per_pixel ) + 31 ) & ~ 31 ) >> 3 ; ( void ) bytes_per_line ; scanline_pad = ( ( ( ( image -> columns * icon_info . bits_per_pixel ) + 31 ) & ~ 31 ) - ( image -> columns * icon_info . bits_per_pixel ) ) >> 3 ; switch ( icon_info . bits_per_pixel ) { case 1 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) ( image -> columns - 7 ) ; x += 8 ) { byte = ( size_t ) ReadBlobByte ( image ) ; for ( bit = 0 ; bit < 8 ; bit ++ ) { SetPixelIndex ( image , ( ( byte & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) , q ) ; q += GetPixelChannels ( image ) ; } } if ( ( image -> columns % 8 ) != 0 ) { byte = ( size_t ) ReadBlobByte ( image ) ; for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) { SetPixelIndex ( image , ( ( byte & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) , q ) ; q += GetPixelChannels ( image ) ; } } for ( x = 0 ; x < ( ssize_t ) scanline_pad ; x ++ ) ( void ) ReadBlobByte ( image ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 4 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { byte = ( size_t ) ReadBlobByte ( image ) ; SetPixelIndex ( image , ( ( byte >> 4 ) & 0xf ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelIndex ( image , ( ( byte ) & 0xf ) , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) { byte = ( size_t ) ReadBlobByte ( image ) ; SetPixelIndex ( image , ( ( byte >> 4 ) & 0xf ) , q ) ; q += GetPixelChannels ( image ) ; } for ( x = 0 ; x < ( ssize_t ) scanline_pad ; x ++ ) ( void ) ReadBlobByte ( image ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 8 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { byte = ( size_t ) ReadBlobByte ( image ) ; SetPixelIndex ( image , byte , q ) ; q += GetPixelChannels ( image ) ; } for ( x = 0 ; x < ( ssize_t ) scanline_pad ; x ++ ) ( void ) ReadBlobByte ( image ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 16 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { byte = ( size_t ) ReadBlobByte ( image ) ; byte |= ( size_t ) ( ReadBlobByte ( image ) << 8 ) ; SetPixelIndex ( image , byte , q ) ; q += GetPixelChannels ( image ) ; } for ( x = 0 ; x < ( ssize_t ) scanline_pad ; x ++ ) ( void ) ReadBlobByte ( image ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 24 : case 32 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( image , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) , q ) ; if ( icon_info . bits_per_pixel == 32 ) SetPixelAlpha ( image , ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) , q ) ; q += GetPixelChannels ( image ) ; } if ( icon_info . bits_per_pixel == 24 ) for ( x = 0 ; x < ( ssize_t ) scanline_pad ; x ++ ) ( void ) ReadBlobByte ( image ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } default : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } if ( image_info -> ping == MagickFalse ) ( void ) SyncImage ( image , exception ) ; if ( icon_info . bits_per_pixel != 32 ) { image -> storage_class = DirectClass ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { byte = ( size_t ) ReadBlobByte ( image ) ; for ( bit = 0 ; bit < 8 ; bit ++ ) { SetPixelAlpha ( image , ( ( ( byte & ( 0x80 >> bit ) ) != 0 ) ? TransparentAlpha : OpaqueAlpha ) , q ) ; q += GetPixelChannels ( image ) ; } } if ( ( image -> columns % 8 ) != 0 ) { byte = ( size_t ) ReadBlobByte ( image ) ; for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) { SetPixelAlpha ( image , ( ( ( byte & ( 0x80 >> bit ) ) != 0 ) ? TransparentAlpha : OpaqueAlpha ) , q ) ; q += GetPixelChannels ( image ) ; } } if ( ( image -> columns % 32 ) != 0 ) for ( x = 0 ; x < ( ssize_t ) ( ( 32 - ( image -> columns % 32 ) ) / 8 ) ; x ++ ) ( void ) ReadBlobByte ( image ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( i < ( ssize_t ) ( icon_file . count - 1 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] . size ; if ( ~ length < 16 ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static bool states_equal ( struct bpf_verifier_env * env , struct bpf_verifier_state * old , struct bpf_verifier_state * cur ) { int i ; <S2SV_StartBug> if ( old -> curframe != cur -> curframe ) <S2SV_EndBug> return false ; for ( i = 0 ; i <= old -> curframe ; i ++ ) { if ( old -> frame [ i ] -> callsite != cur -> frame [ i ] -> callsite ) return false ; if ( ! func_states_equal ( old -> frame [ i ] , cur -> frame [ i ] ) ) return false ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cur -> curframe ) return false ; if ( old -> speculative && ! cur -> speculative\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14175\n\n```\nCWE-834 static Image * ReadXBMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char buffer [ MagickPathExtent ] , name [ MagickPathExtent ] ; Image <S2SV_StartBug> * image ; <S2SV_EndBug> MagickBooleanType status ; register ssize_t i , x ; register Quantum * q ; register unsigned char * p ; short int hex_digits [ 256 ] ; ssize_t y ; unsigned char * data ; unsigned int bit , byte , bytes_per_line , height , length , padding , <S2SV_StartBug> value , <S2SV_EndBug> version , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } width = 0 ; height = 0 ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) if ( sscanf ( buffer , \"#define<S2SV_blank>%32s<S2SV_blank>%u\" , name , & width ) == 2 ) if ( ( strlen ( name ) >= 6 ) && ( LocaleCompare ( name + strlen ( name ) - 6 , \"_width\" ) == 0 ) ) break ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) if ( sscanf ( buffer , \"#define<S2SV_blank>%32s<S2SV_blank>%u\" , name , & height ) == 2 ) if ( ( strlen ( name ) >= 7 ) && ( LocaleCompare ( name + strlen ( name ) - 7 , \"_height\" ) == 0 ) ) break ; image -> columns = width ; image -> rows = height ; image -> depth = 8 ; image -> storage_class = PseudoClass ; image -> colors = 2 ; version = 11 ; while ( ReadBlobString ( image , buffer ) != ( char * ) NULL ) { if ( sscanf ( buffer , \"static<S2SV_blank>short<S2SV_blank>%32s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 10 ; else if ( sscanf ( buffer , \"static<S2SV_blank>unsigned<S2SV_blank>char<S2SV_blank>%32s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 11 ; else if ( sscanf ( buffer , \"static<S2SV_blank>char<S2SV_blank>%32s<S2SV_blank>=<S2SV_blank>{\" , name ) == 1 ) version = 11 ; else continue ; p = ( unsigned char * ) strrchr ( name , '_' ) ; if ( p == ( unsigned char * ) NULL ) p = ( unsigned char * ) name ; else p ++ ; if ( LocaleCompare ( \"bits[]\" , ( char * ) p ) == 0 ) break ; } if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) || ( EOFBlob ( image ) != MagickFalse ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> image -> colormap [ 0 ] . red = QuantumRange ; <S2SV_EndBug> <S2SV_StartBug> image -> colormap [ 0 ] . green = QuantumRange ; <S2SV_EndBug> <S2SV_StartBug> image -> colormap [ 0 ] . blue = QuantumRange ; <S2SV_EndBug> <S2SV_StartBug> image -> colormap [ 1 ] . red = ( Quantum ) 0 ; <S2SV_EndBug> <S2SV_StartBug> image -> colormap [ 1 ] . green = ( Quantum ) 0 ; <S2SV_EndBug> <S2SV_StartBug> image -> colormap [ 1 ] . blue = ( Quantum ) 0 ; <S2SV_EndBug> if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; hex_digits [ ( int ) '0' ] = 0 ; hex_digits [ ( int ) '1' ] = 1 ; hex_digits [ ( int ) '2' ] = 2 ; hex_digits [ ( int ) '3' ] = 3 ; hex_digits [ ( int ) '4' ] = 4 ; hex_digits [ ( int ) '5' ] = 5 ; hex_digits [ ( int ) '6' ] = 6 ; hex_digits [ ( int ) '7' ] = 7 ; hex_digits [ ( int ) '8' ] = 8 ; hex_digits [ ( int ) '9' ] = 9 ; hex_digits [ ( int ) 'A' ] = 10 ; hex_digits [ ( int ) 'B' ] = 11 ; hex_digits [ ( int ) 'C' ] = 12 ; hex_digits [ ( int ) 'D' ] = 13 ; hex_digits [ ( int ) 'E' ] = 14 ; hex_digits [ ( int ) 'F' ] = 15 ; hex_digits [ ( int ) 'a' ] = 10 ; hex_digits [ ( int ) 'b' ] = 11 ; hex_digits [ ( int ) 'c' ] = 12 ; hex_digits [ ( int ) 'd' ] = 13 ; hex_digits [ ( int ) 'e' ] = 14 ; hex_digits [ ( int ) 'f' ] = 15 ; hex_digits [ ( int ) 'x' ] = 0 ; hex_digits [ ( int ) '<S2SV_blank>' ] = ( - 1 ) ; hex_digits [ ( int ) ',' ] = ( - 1 ) ; hex_digits [ ( int ) '}' ] = ( - 1 ) ; hex_digits [ ( int ) '\\\\n' ] = ( - 1 ) ; hex_digits [ ( int ) '\\\\t' ] = ( - 1 ) ; padding = 0 ; if ( ( ( image -> columns % 16 ) != 0 ) && ( ( image -> columns % 16 ) < 9 ) && ( version == 10 ) ) padding = 1 ; bytes_per_line = ( unsigned int ) ( image -> columns + 7 ) / 8 + padding ; length = ( unsigned int ) image -> rows ; data = ( unsigned char * ) AcquireQuantumMemory ( length , bytes_per_line * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = data ; if ( version == 10 ) for ( i = 0 ; i < ( ssize_t ) ( bytes_per_line * image -> rows ) ; ( i += 2 ) ) { <S2SV_StartBug> value = XBMInteger ( image , hex_digits ) ; <S2SV_EndBug> <S2SV_StartBug> * p ++ = ( unsigned char ) value ; <S2SV_EndBug> if ( ( padding == 0 ) || ( ( ( i + 2 ) % bytes_per_line ) != 0 ) ) <S2SV_StartBug> * p ++ = ( unsigned char ) ( value >> 8 ) ; <S2SV_EndBug> } else for ( i = 0 ; i < ( ssize_t ) ( bytes_per_line * image -> rows ) ; i ++ ) { <S2SV_StartBug> value = XBMInteger ( image , hex_digits ) ; <S2SV_EndBug> <S2SV_StartBug> * p ++ = ( unsigned char ) value ; <S2SV_EndBug> } p = data ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; bit = 0 ; byte = 0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( bit == 0 ) <S2SV_StartBug> byte = ( size_t ) ( * p ++ ) ; <S2SV_EndBug> SetPixelIndex ( image , ( Quantum ) ( ( byte & 0x01 ) != 0 ? 0x01 : 0x00 ) , q ) ; bit ++ ; byte >>= 1 ; if ( bit == 8 ) bit = 0 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ( void ) SyncImage ( image , exception ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Image * image ; int c <S2SV_ModStart> , padding , <S2SV_ModEnd> version , width <S2SV_ModStart> . red = ( MagickRealType ) <S2SV_ModStart> . green = ( MagickRealType ) <S2SV_ModStart> . blue = ( MagickRealType ) <S2SV_ModStart> . red = 0.0 <S2SV_ModEnd> ; image -> <S2SV_ModStart> . green = 0.0 <S2SV_ModEnd> ; image -> <S2SV_ModStart> . blue = 0.0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) { c <S2SV_ModEnd> = XBMInteger ( <S2SV_ModStart> , hex_digits ) ; if ( c < 0 ) break <S2SV_ModStart> unsigned char ) c <S2SV_ModEnd> ; if ( <S2SV_ModStart> char ) ( c <S2SV_ModEnd> >> 8 ) <S2SV_ModStart> ++ ) { c <S2SV_ModEnd> = XBMInteger ( <S2SV_ModStart> , hex_digits ) ; if ( c < 0 ) break <S2SV_ModStart> unsigned char ) c ; } if ( EOFBlob ( image ) != MagickFalse ) { data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) <S2SV_ModEnd> ; } p <S2SV_ModStart> byte = ( unsigned int <S2SV_ModEnd> ) ( *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7501\n\n```\nCWE-59 static int fsmMkfile ( rpmfi fi , const char * dest , rpmfiles files , rpmpsm psm , int nodigest , int * setmeta , int * firsthardlink ) { int rc = 0 ; int numHardlinks = rpmfiFNlink ( fi ) ; if ( numHardlinks > 1 ) { if ( * firsthardlink < 0 ) { * firsthardlink = rpmfiFX ( fi ) ; <S2SV_StartBug> rc = expandRegular ( fi , dest , psm , nodigest , 1 ) ; <S2SV_EndBug> } else { char * fn = rpmfilesFN ( files , * firsthardlink ) ; rc = link ( fn , dest ) ; if ( rc < 0 ) { rc = RPMERR_LINK_FAILED ; } free ( fn ) ; } } if ( numHardlinks <= 1 ) { if ( ! rc ) <S2SV_StartBug> rc = expandRegular ( fi , dest , psm , nodigest , 0 ) ; <S2SV_EndBug> } else if ( rpmfiArchiveHasContent ( fi ) ) { if ( ! rc ) <S2SV_StartBug> rc = expandRegular ( fi , dest , psm , nodigest , 0 ) ; <S2SV_EndBug> * firsthardlink = - 1 ; } else { * setmeta = 0 ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , psm , 1 , <S2SV_ModStart> , psm , 1 , <S2SV_ModStart> , psm , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1860\n\n```\nCWE-119 static int wdm_post_reset ( struct usb_interface * intf ) { struct wdm_device * desc = wdm_find_device ( intf ) ; <S2SV_StartBug> int rv ; <S2SV_EndBug> clear_bit ( WDM_RESETTING , & desc -> flags ) ; rv = recover_from_urb_loss ( desc ) ; mutex_unlock ( & desc -> wlock ) ; mutex_unlock ( & desc -> rlock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int rv ; clear_bit ( WDM_OVERFLOW , & desc -> flags )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8767\n\n```\nCWE-362 void sctp_generate_proto_unreach_event ( unsigned long data ) { struct sctp_transport * transport = ( struct sctp_transport * ) data ; struct sctp_association * asoc = transport -> asoc ; <S2SV_StartBug> struct net * net = sock_net ( asoc -> base . sk ) ; <S2SV_EndBug> <S2SV_StartBug> bh_lock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> <S2SV_StartBug> if ( sock_owned_by_user ( asoc -> base . sk ) ) { <S2SV_EndBug> pr_debug ( \"%s:<S2SV_blank>sock<S2SV_blank>is<S2SV_blank>busy\\\\n\" , __func__ ) ; if ( ! mod_timer ( & transport -> proto_unreach_timer , jiffies + ( HZ / 20 ) ) ) sctp_association_hold ( asoc ) ; goto out_unlock ; } if ( asoc -> base . dead ) goto out_unlock ; sctp_do_sm ( net , SCTP_EVENT_T_OTHER , SCTP_ST_OTHER ( SCTP_EVENT_ICMP_PROTO_UNREACH ) , asoc -> state , asoc -> ep , asoc , transport , GFP_ATOMIC ) ; out_unlock : <S2SV_StartBug> bh_unlock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> sctp_association_put ( asoc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> asoc ; struct sock * sk = asoc -> base . sk ; struct <S2SV_ModStart> = sock_net ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ; bh_lock_sock ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ( sock_owned_by_user ( <S2SV_ModEnd> sk ) ) <S2SV_ModStart> : bh_unlock_sock ( <S2SV_ModEnd> sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6763\n\n```\nCWE-119 int au1100fb_fb_mmap ( struct fb_info * fbi , struct vm_area_struct * vma ) { struct au1100fb_device * fbdev ; <S2SV_StartBug> unsigned int len ; <S2SV_EndBug> unsigned long start = 0 , off ; <S2SV_StartBug> fbdev = to_au1100fb_device ( fbi ) ; <S2SV_EndBug> if ( vma -> vm_pgoff > ( ~ 0UL >> PAGE_SHIFT ) ) { return - EINVAL ; } start = fbdev -> fb_phys & PAGE_MASK ; len = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + fbdev -> fb_len ) ; off = vma -> vm_pgoff << PAGE_SHIFT ; if ( ( vma -> vm_end - vma -> vm_start + off ) > len ) { return - EINVAL ; } off += start ; vma -> vm_pgoff = off >> PAGE_SHIFT ; vma -> vm_page_prot = pgprot_noncached ( vma -> vm_page_prot ) ; pgprot_val ( vma -> vm_page_prot ) |= ( 6 << 9 ) ; <S2SV_StartBug> if ( io_remap_pfn_range ( vma , vma -> vm_start , off >> PAGE_SHIFT , <S2SV_EndBug> vma -> vm_end - vma -> vm_start , vma -> vm_page_prot ) ) { return - EAGAIN ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * fbdev ; <S2SV_ModEnd> fbdev = to_au1100fb_device <S2SV_ModStart> ( fbi ) <S2SV_ModEnd> ; vma -> <S2SV_ModStart> 9 ) ; return vm_iomap_memory <S2SV_ModEnd> ( vma , <S2SV_ModStart> ( vma , fbdev -> fb_phys , fbdev -> fb_len ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13029\n\n```\nCWE-125 static int print_ipcp_config_options ( netdissect_options * ndo , const u_char * p , int length ) { int len , opt ; u_int compproto , ipcomp_subopttotallen , ipcomp_subopt , ipcomp_suboptlen ; if ( length < 2 ) return 0 ; ND_TCHECK2 ( * p , 2 ) ; len = p [ 1 ] ; opt = p [ 0 ] ; if ( length < len ) return 0 ; if ( len < 2 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>2)\" , tok2str ( ipcpopt_values , \"unknown\" , opt ) , opt , len ) ) ; return 0 ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( ipcpopt_values , \"unknown\" , opt ) , opt , len ) ) ; switch ( opt ) { case IPCPOPT_2ADDR : if ( len != 10 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>10)\" ) ) ; return len ; } ND_TCHECK2 ( * ( p + 6 ) , 4 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>src<S2SV_blank>%s,<S2SV_blank>dst<S2SV_blank>%s\" , ipaddr_string ( ndo , p + 2 ) , ipaddr_string ( ndo , p + 6 ) ) ) ; break ; case IPCPOPT_IPCOMP : if ( len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>4)\" ) ) ; return 0 ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 2 ) ; <S2SV_EndBug> compproto = EXTRACT_16BITS ( p + 2 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>%s<S2SV_blank>(0x%02x):\" , tok2str ( ipcpopt_compproto_values , \"Unknown\" , compproto ) , compproto ) ) ; switch ( compproto ) { case PPP_VJC : break ; case IPCPOPT_IPCOMP_HDRCOMP : if ( len < IPCPOPT_IPCOMP_MINLEN ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>%u)\" , IPCPOPT_IPCOMP_MINLEN ) ) ; return 0 ; } ND_TCHECK2 ( * ( p + 2 ) , IPCPOPT_IPCOMP_MINLEN ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>TCP<S2SV_blank>Space<S2SV_blank>%u,<S2SV_blank>non-TCP<S2SV_blank>Space<S2SV_blank>%u\" \",<S2SV_blank>maxPeriod<S2SV_blank>%u,<S2SV_blank>maxTime<S2SV_blank>%u,<S2SV_blank>maxHdr<S2SV_blank>%u\" , EXTRACT_16BITS ( p + 4 ) , EXTRACT_16BITS ( p + 6 ) , EXTRACT_16BITS ( p + 8 ) , EXTRACT_16BITS ( p + 10 ) , EXTRACT_16BITS ( p + 12 ) ) ) ; if ( len > IPCPOPT_IPCOMP_MINLEN ) { ipcomp_subopttotallen = len - IPCPOPT_IPCOMP_MINLEN ; p += IPCPOPT_IPCOMP_MINLEN ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Suboptions,<S2SV_blank>length<S2SV_blank>%u\" , ipcomp_subopttotallen ) ) ; while ( ipcomp_subopttotallen >= 2 ) { ND_TCHECK2 ( * p , 2 ) ; ipcomp_subopt = * p ; ipcomp_suboptlen = * ( p + 1 ) ; if ( ipcomp_subopt == 0 || ipcomp_suboptlen == 0 ) break ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t%s<S2SV_blank>Suboption<S2SV_blank>#%u,<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( ipcpopt_compproto_subopt_values , \"Unknown\" , ipcomp_subopt ) , ipcomp_subopt , ipcomp_suboptlen ) ) ; ipcomp_subopttotallen -= ipcomp_suboptlen ; p += ipcomp_suboptlen ; } } break ; default : break ; } break ; case IPCPOPT_ADDR : case IPCPOPT_MOBILE4 : case IPCPOPT_PRIDNS : case IPCPOPT_PRINBNS : case IPCPOPT_SECDNS : case IPCPOPT_SECNBNS : if ( len != 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>6)\" ) ) ; return 0 ; } ND_TCHECK2 ( * ( p + 2 ) , 4 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>%s\" , ipaddr_string ( ndo , p + 2 ) ) ) ; break ; default : if ( ndo -> ndo_vflag < 2 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; return len ; trunc : ND_PRINT ( ( ndo , \"[|ipcp]\" ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } ND_TCHECK_16BITS ( p + <S2SV_ModEnd> 2 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 bool_t enc28j60IrqHandler ( NetInterface * interface ) { bool_t flag ; uint8_t status ; flag = FALSE ; <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_EIE , EIE_INTIE ) ; <S2SV_EndBug> <S2SV_StartBug> status = enc28j60ReadReg ( interface , ENC28J60_REG_EIR ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( status & EIR_LINKIF ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_EIE , EIE_LINKIE ) ; <S2SV_EndBug> interface -> nicEvent = TRUE ; flag |= osSetEventFromIsr ( & netEvent ) ; } <S2SV_StartBug> if ( ( status & EIR_PKTIF ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_EIE , EIE_PKTIE ) ; <S2SV_EndBug> interface -> nicEvent = TRUE ; flag |= osSetEventFromIsr ( & netEvent ) ; } <S2SV_StartBug> if ( ( status & ( EIR_TXIF | EIE_TXERIE ) ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_EIR , EIR_TXIF | EIE_TXERIE ) ; <S2SV_EndBug> flag |= osSetEventFromIsr ( & interface -> nicTxEvent ) ; } <S2SV_StartBug> enc28j60SetBit ( interface , ENC28J60_REG_EIE , EIE_INTIE ) ; <S2SV_EndBug> return flag ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC28J60_EIE , ENC28J60_EIE_INTIE <S2SV_ModEnd> ) ; status <S2SV_ModStart> ( interface , ENC28J60_EIR <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( status & ENC28J60_EIR_LINKIF <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC28J60_EIE , ENC28J60_EIE_LINKIE <S2SV_ModEnd> ) ; interface <S2SV_ModStart> } if ( enc28j60ReadReg ( interface , ENC28J60_EPKTCNT <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC28J60_EIE , ENC28J60_EIE_PKTIE <S2SV_ModEnd> ) ; interface <S2SV_ModStart> status & ( ENC28J60_EIR_TXIF | ENC28J60_EIE_TXERIE <S2SV_ModEnd> ) ) != <S2SV_ModStart> ( interface , ENC28J60_EIR , ENC28J60_EIR_TXIF | ENC28J60_EIE_TXERIE <S2SV_ModEnd> ) ; flag <S2SV_ModStart> ( interface , ENC28J60_EIE , ENC28J60_EIE_INTIE <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-8460\n\n```\nCWE-000 void tcp_sack_option ( struct tcpcb * tp , struct tcphdr * th , u_char * cp , int optlen ) { int tmp_olen ; u_char * tmp_cp ; struct sackhole * cur , * p , * temp ; if ( ! tp -> sack_enable ) return ; if ( ( th -> th_flags & TH_ACK ) == 0 ) return ; if ( SEQ_LT ( th -> th_ack , tp -> snd_una ) || SEQ_GT ( th -> th_ack , tp -> snd_max ) ) return ; if ( optlen <= 2 || ( optlen - 2 ) % TCPOLEN_SACK != 0 ) return ; tmp_cp = cp + 2 ; tmp_olen = optlen - 2 ; tcpstat_inc ( tcps_sack_rcv_opts ) ; if ( tp -> snd_numholes < 0 ) tp -> snd_numholes = 0 ; if ( tp -> t_maxseg == 0 ) panic ( \"tcp_sack_option\" ) ; while ( tmp_olen > 0 ) { struct sackblk sack ; memcpy ( & sack . start , tmp_cp , sizeof ( tcp_seq ) ) ; sack . start = ntohl ( sack . start ) ; memcpy ( & sack . end , tmp_cp + sizeof ( tcp_seq ) , sizeof ( tcp_seq ) ) ; sack . end = ntohl ( sack . end ) ; tmp_olen -= TCPOLEN_SACK ; tmp_cp += TCPOLEN_SACK ; if ( SEQ_LEQ ( sack . end , sack . start ) ) continue ; if ( SEQ_LEQ ( sack . end , tp -> snd_una ) ) continue ; if ( SEQ_GT ( th -> th_ack , tp -> snd_una ) ) { if ( SEQ_LT ( sack . start , th -> th_ack ) ) continue ; } if ( SEQ_GT ( sack . end , tp -> snd_max ) ) continue ; if ( tp -> snd_holes == NULL ) { tp -> snd_holes = ( struct sackhole * ) pool_get ( & sackhl_pool , PR_NOWAIT ) ; if ( tp -> snd_holes == NULL ) { goto done ; } cur = tp -> snd_holes ; cur -> start = th -> th_ack ; cur -> end = sack . start ; cur -> rxmit = cur -> start ; cur -> next = NULL ; tp -> snd_numholes = 1 ; tp -> rcv_lastsack = sack . end ; cur -> dups = min ( tcprexmtthresh , ( ( sack . end - cur -> end ) / tp -> t_maxseg ) ) ; if ( cur -> dups < 1 ) cur -> dups = 1 ; continue ; } p = cur = tp -> snd_holes ; while ( cur ) { if ( SEQ_LEQ ( sack . end , cur -> start ) ) break ; if ( SEQ_GEQ ( sack . start , cur -> end ) ) { cur -> dups ++ ; if ( ( ( sack . end - cur -> end ) / tp -> t_maxseg ) >= tcprexmtthresh ) cur -> dups = tcprexmtthresh ; p = cur ; cur = cur -> next ; continue ; } if ( SEQ_LEQ ( sack . start , cur -> start ) ) { if ( SEQ_GEQ ( sack . end , cur -> end ) ) { if ( p != cur ) { p -> next = cur -> next ; pool_put ( & sackhl_pool , cur ) ; cur = p -> next ; } else { cur = cur -> next ; pool_put ( & sackhl_pool , p ) ; p = cur ; tp -> snd_holes = p ; } tp -> snd_numholes -- ; continue ; } cur -> start = sack . end ; cur -> rxmit = SEQ_MAX ( cur -> rxmit , cur -> start ) ; p = cur ; cur = cur -> next ; continue ; } if ( SEQ_GEQ ( sack . end , cur -> end ) ) { cur -> end = sack . start ; cur -> rxmit = SEQ_MIN ( cur -> rxmit , cur -> end ) ; cur -> dups ++ ; if ( ( ( sack . end - cur -> end ) / tp -> t_maxseg ) >= tcprexmtthresh ) cur -> dups = tcprexmtthresh ; p = cur ; cur = cur -> next ; continue ; } if ( SEQ_LT ( cur -> start , sack . start ) && SEQ_GT ( cur -> end , sack . end ) ) { <S2SV_StartBug> temp = ( struct sackhole * ) <S2SV_EndBug> pool_get ( & sackhl_pool , PR_NOWAIT ) ; if ( temp == NULL ) goto done ; temp -> next = cur -> next ; temp -> start = sack . end ; temp -> end = cur -> end ; temp -> dups = cur -> dups ; temp -> rxmit = SEQ_MAX ( cur -> rxmit , temp -> start ) ; cur -> end = sack . start ; cur -> rxmit = SEQ_MIN ( cur -> rxmit , cur -> end ) ; cur -> dups ++ ; if ( ( ( sack . end - cur -> end ) / tp -> t_maxseg ) >= tcprexmtthresh ) cur -> dups = tcprexmtthresh ; cur -> next = temp ; p = temp ; cur = p -> next ; tp -> snd_numholes ++ ; } } if ( SEQ_LT ( tp -> rcv_lastsack , sack . start ) ) { <S2SV_StartBug> temp = ( struct sackhole * ) <S2SV_EndBug> pool_get ( & sackhl_pool , PR_NOWAIT ) ; if ( temp == NULL ) goto done ; temp -> start = tp -> rcv_lastsack ; temp -> end = sack . start ; temp -> dups = min ( tcprexmtthresh , ( ( sack . end - sack . start ) / tp -> t_maxseg ) ) ; if ( temp -> dups < 1 ) temp -> dups = 1 ; temp -> rxmit = temp -> start ; temp -> next = 0 ; p -> next = temp ; tp -> rcv_lastsack = sack . end ; tp -> snd_numholes ++ ; } } done : return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( tp -> snd_numholes >= TCP_SACKHOLE_LIMIT ) goto done ; <S2SV_ModStart> ) ) { if ( tp -> snd_numholes >= TCP_SACKHOLE_LIMIT ) goto done ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5892\n\n```\nCWE-000 static void bgp_packet_mpattr_tea ( struct bgp * bgp , struct peer * peer , struct stream * s , struct attr * attr , uint8_t attrtype ) { unsigned int attrlenfield = 0 ; unsigned int attrhdrlen = 0 ; struct bgp_attr_encap_subtlv * subtlvs ; struct bgp_attr_encap_subtlv * st ; const char * attrname ; if ( ! attr || ( attrtype == BGP_ATTR_ENCAP && ( ! attr -> encap_tunneltype || attr -> encap_tunneltype == BGP_ENCAP_TYPE_MPLS ) ) ) return ; switch ( attrtype ) { case BGP_ATTR_ENCAP : attrname = \"Tunnel<S2SV_blank>Encap\" ; subtlvs = attr -> encap_subtlvs ; if ( subtlvs == NULL ) return ; attrlenfield = 2 + 2 ; attrhdrlen = 1 + 1 ; break ; <S2SV_StartBug> # if ENABLE_BGP_VNC <S2SV_EndBug> case BGP_ATTR_VNC : attrname = \"VNC\" ; subtlvs = attr -> vnc_subtlvs ; if ( subtlvs == NULL ) return ; attrlenfield = 0 ; attrhdrlen = 2 + 2 ; break ; # endif default : assert ( 0 ) ; } for ( st = subtlvs ; st ; st = st -> next ) { attrlenfield += ( attrhdrlen + st -> length ) ; } if ( attrlenfield > 0xffff ) { zlog_info ( \"%s<S2SV_blank>attribute<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long<S2SV_blank>(length=%d),<S2SV_blank>can\\'t<S2SV_blank>send<S2SV_blank>it\" , attrname , attrlenfield ) ; return ; } if ( attrlenfield > 0xff ) { stream_putc ( s , BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_OPTIONAL | BGP_ATTR_FLAG_EXTLEN ) ; stream_putc ( s , attrtype ) ; stream_putw ( s , attrlenfield & 0xffff ) ; } else { stream_putc ( s , BGP_ATTR_FLAG_TRANS | BGP_ATTR_FLAG_OPTIONAL ) ; stream_putc ( s , attrtype ) ; stream_putc ( s , attrlenfield & 0xff ) ; } if ( attrtype == BGP_ATTR_ENCAP ) { stream_putw ( s , attr -> encap_tunneltype ) ; stream_putw ( s , attrlenfield - 4 ) ; } for ( st = subtlvs ; st ; st = st -> next ) { if ( attrtype == BGP_ATTR_ENCAP ) { stream_putc ( s , st -> type ) ; stream_putc ( s , st -> length ) ; # if ENABLE_BGP_VNC } else { stream_putw ( s , st -> type ) ; stream_putw ( s , st -> length ) ; # endif } stream_put ( s , st -> value , st -> length ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # if ENABLE_BGP_VNC_ATTR <S2SV_ModEnd> case BGP_ATTR_VNC :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static inline int do_exception ( struct pt_regs * regs , int access , unsigned long trans_exc_code ) { struct task_struct * tsk ; struct mm_struct * mm ; struct vm_area_struct * vma ; unsigned long address ; unsigned int flags ; int fault ; if ( notify_page_fault ( regs ) ) return 0 ; tsk = current ; mm = tsk -> mm ; fault = VM_FAULT_BADCONTEXT ; if ( unlikely ( ! user_space_fault ( trans_exc_code ) || in_atomic ( ) || ! mm ) ) goto out ; address = trans_exc_code & __FAIL_ADDR_MASK ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_PAGE_FAULTS , 1 , 0 , regs , address ) ; <S2SV_EndBug> flags = FAULT_FLAG_ALLOW_RETRY ; if ( access == VM_WRITE || ( trans_exc_code & store_indication ) == 0x400 ) flags |= FAULT_FLAG_WRITE ; retry : down_read ( & mm -> mmap_sem ) ; fault = VM_FAULT_BADMAP ; vma = find_vma ( mm , address ) ; if ( ! vma ) goto out_up ; if ( unlikely ( vma -> vm_start > address ) ) { if ( ! ( vma -> vm_flags & VM_GROWSDOWN ) ) goto out_up ; if ( expand_stack ( vma , address ) ) goto out_up ; } fault = VM_FAULT_BADACCESS ; if ( unlikely ( ! ( vma -> vm_flags & access ) ) ) goto out_up ; if ( is_vm_hugetlb_page ( vma ) ) address &= HPAGE_MASK ; fault = handle_mm_fault ( mm , vma , address , flags ) ; if ( unlikely ( fault & VM_FAULT_ERROR ) ) goto out_up ; if ( flags & FAULT_FLAG_ALLOW_RETRY ) { if ( fault & VM_FAULT_MAJOR ) { tsk -> maj_flt ++ ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_PAGE_FAULTS_MAJ , 1 , 0 , <S2SV_EndBug> regs , address ) ; } else { tsk -> min_flt ++ ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_PAGE_FAULTS_MIN , 1 , 0 , <S2SV_EndBug> regs , address ) ; } if ( fault & VM_FAULT_RETRY ) { flags &= ~ FAULT_FLAG_ALLOW_RETRY ; goto retry ; } } clear_tsk_thread_flag ( tsk , TIF_PER_TRAP ) ; fault = 0 ; out_up : up_read ( & mm -> mmap_sem ) ; out : return fault ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , address <S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , address <S2SV_ModStart> PERF_COUNT_SW_PAGE_FAULTS_MIN , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 <S2SV_StartBug> static int t220_frontend_attach ( struct dvb_usb_adapter * d ) <S2SV_EndBug> { u8 obuf [ 3 ] = { 0xe , 0x87 , 0 } ; u8 ibuf [ ] = { 0 } ; <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x86 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x80 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> msleep ( 50 ) ; <S2SV_EndBug> obuf [ 0 ] = 0xe ; obuf [ 1 ] = 0x80 ; obuf [ 2 ] = 1 ; <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> <S2SV_StartBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_EndBug> obuf [ 0 ] = 0x51 ; if ( dvb_usb_generic_rw ( d -> dev , obuf , 1 , ibuf , 1 , 0 ) < 0 ) err ( \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> d -> fe_adap [ 0 ] . fe = dvb_attach ( cxd2820r_attach , & cxd2820r_config , <S2SV_EndBug> <S2SV_StartBug> & d -> dev -> i2c_adap , NULL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( d -> fe_adap [ 0 ] . fe != NULL ) { <S2SV_EndBug> <S2SV_StartBug> if ( dvb_attach ( tda18271_attach , d -> fe_adap [ 0 ] . fe , 0x60 , <S2SV_EndBug> <S2SV_StartBug> & d -> dev -> i2c_adap , & tda18271_config ) ) { <S2SV_EndBug> info ( \"Attached<S2SV_blank>TDA18271HD/CXD2820R!\" ) ; return 0 ; } } info ( \"Failed<S2SV_blank>to<S2SV_blank>attach<S2SV_blank>TDA18271HD/CXD2820R!\" ) ; return - EIO ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct dvb_usb_adapter * adap ) { struct dvb_usb_device * d = adap -> dev ; struct dw2102_state * state = d -> priv ; mutex_lock ( & d -> data_mutex ) ; state -> data [ 0 ] = 0xe ; state -> data [ 1 ] = 0x87 ; state -> data [ 2 ] = 0x0 ; if ( dvb_usb_generic_rw ( d , state -> data , 3 , state -> data , 1 , 0 ) < 0 ) err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data [ 0 ] = 0xe ; state -> data [ 1 ] = 0x86 ; state -> data [ 2 ] = 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data [ 1 ] = 0x80 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> 2 ] = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; msleep ( 50 ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 0x80 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> 2 ] = 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data [ 0 ] = 0x51 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data , 1 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> ) err ( <S2SV_ModEnd> \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_ModStart> \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; mutex_unlock ( & d -> data_mutex ) ; adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> & d -> <S2SV_ModEnd> i2c_adap , NULL <S2SV_ModStart> ; if ( adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> ( tda18271_attach , adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> , & d <S2SV_ModEnd> -> i2c_adap ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8955\n\n```\nCWE-264 static int validate_group ( struct perf_event * event ) { struct perf_event * sibling , * leader = event -> group_leader ; struct pmu_hw_events fake_pmu ; DECLARE_BITMAP ( fake_used_mask , ARMPMU_MAX_HWEVENTS ) ; memset ( fake_used_mask , 0 , sizeof ( fake_used_mask ) ) ; fake_pmu . used_mask = fake_used_mask ; <S2SV_StartBug> if ( ! validate_event ( & fake_pmu , leader ) ) <S2SV_EndBug> return - EINVAL ; list_for_each_entry ( sibling , & leader -> sibling_list , group_entry ) { <S2SV_StartBug> if ( ! validate_event ( & fake_pmu , sibling ) ) <S2SV_EndBug> return - EINVAL ; } <S2SV_StartBug> if ( ! validate_event ( & fake_pmu , event ) ) <S2SV_EndBug> return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! validate_event ( event -> pmu , <S2SV_ModStart> ! validate_event ( event -> pmu , <S2SV_ModStart> ! validate_event ( event -> pmu ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14043\n\n```\nCWE-732 static M_bool M_fs_check_overwrite_allowed ( const char * p1 , const char * p2 , M_uint32 mode ) { M_fs_info_t * info = NULL ; char * pold = NULL ; char * pnew = NULL ; M_fs_type_t type ; M_bool ret = M_TRUE ; if ( mode & M_FS_FILE_MODE_OVERWRITE ) return M_TRUE ; if ( M_fs_info ( & info , p1 , M_FS_PATH_INFO_FLAGS_BASIC ) != M_FS_ERROR_SUCCESS ) return M_FALSE ; type = M_fs_info_get_type ( info ) ; M_fs_info_destroy ( info ) ; if ( type != M_FS_TYPE_DIR ) { if ( M_fs_perms_can_access ( p2 , M_FS_PERMS_MODE_NONE ) == M_FS_ERROR_SUCCESS ) { ret = M_FALSE ; goto done ; } } pold = M_fs_path_basename ( p1 , M_FS_SYSTEM_AUTO ) ; pnew = M_fs_path_join ( p2 , pnew , M_FS_SYSTEM_AUTO ) ; if ( M_fs_perms_can_access ( pnew , M_FS_PERMS_MODE_NONE ) == M_FS_ERROR_SUCCESS ) { ret = M_FALSE ; goto done ; } done : M_free ( pnew ) ; M_free ( pold ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12210\n\n```\nCWE-000 int get_devices_from_authfile ( const char * authfile , const char * username , unsigned max_devs , int verbose , FILE * debug_file , device_t * devices , unsigned * n_devs ) { char * buf = NULL ; char * s_user , * s_token ; int retval = 0 ; int fd = - 1 ; struct stat st ; struct passwd * pw = NULL , pw_s ; char buffer [ BUFSIZE ] ; int gpu_ret ; FILE * opwfile = NULL ; unsigned i , j ; * n_devs = 0 ; <S2SV_StartBug> fd = open ( authfile , O_RDONLY , 0 ) ; <S2SV_EndBug> if ( fd < 0 ) { if ( verbose ) D ( debug_file , \"Cannot<S2SV_blank>open<S2SV_blank>file:<S2SV_blank>%s<S2SV_blank>(%s)\" , authfile , strerror ( errno ) ) ; goto err ; } if ( fstat ( fd , & st ) < 0 ) { if ( verbose ) D ( debug_file , \"Cannot<S2SV_blank>stat<S2SV_blank>file:<S2SV_blank>%s<S2SV_blank>(%s)\" , authfile , strerror ( errno ) ) ; goto err ; } if ( ! S_ISREG ( st . st_mode ) ) { if ( verbose ) D ( debug_file , \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>regular<S2SV_blank>file\" , authfile ) ; goto err ; } if ( st . st_size == 0 ) { if ( verbose ) D ( debug_file , \"File<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>empty\" , authfile ) ; goto err ; } gpu_ret = getpwuid_r ( st . st_uid , & pw_s , buffer , sizeof ( buffer ) , & pw ) ; if ( gpu_ret != 0 || pw == NULL ) { D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>credentials<S2SV_blank>for<S2SV_blank>uid<S2SV_blank>%u,<S2SV_blank>(%s)\" , st . st_uid , strerror ( errno ) ) ; goto err ; } if ( strcmp ( pw -> pw_name , username ) != 0 && strcmp ( pw -> pw_name , \"root\" ) != 0 ) { if ( strcmp ( username , \"root\" ) != 0 ) { D ( debug_file , \"The<S2SV_blank>owner<S2SV_blank>of<S2SV_blank>the<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>%s<S2SV_blank>nor<S2SV_blank>root\" , username ) ; } else { D ( debug_file , \"The<S2SV_blank>owner<S2SV_blank>of<S2SV_blank>the<S2SV_blank>authentication<S2SV_blank>file<S2SV_blank>is<S2SV_blank>not<S2SV_blank>root\" ) ; } goto err ; } opwfile = fdopen ( fd , \"r\" ) ; if ( opwfile == NULL ) { if ( verbose ) D ( debug_file , \"fdopen:<S2SV_blank>%s\" , strerror ( errno ) ) ; <S2SV_StartBug> goto err ; <S2SV_EndBug> } buf = malloc ( sizeof ( char ) * ( DEVSIZE * max_devs ) ) ; if ( ! buf ) { if ( verbose ) D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto err ; } retval = - 2 ; while ( fgets ( buf , ( int ) ( DEVSIZE * ( max_devs - 1 ) ) , opwfile ) ) { char * saveptr = NULL ; if ( buf [ strlen ( buf ) - 1 ] == '\\\\n' ) buf [ strlen ( buf ) - 1 ] = '\\\\0' ; if ( verbose ) D ( debug_file , \"Authorization<S2SV_blank>line:<S2SV_blank>%s\" , buf ) ; s_user = strtok_r ( buf , \":\" , & saveptr ) ; if ( s_user && strcmp ( username , s_user ) == 0 ) { if ( verbose ) D ( debug_file , \"Matched<S2SV_blank>user:<S2SV_blank>%s\" , s_user ) ; retval = - 1 ; for ( i = 0 ; i < * n_devs ; i ++ ) { free ( devices [ i ] . keyHandle ) ; free ( devices [ i ] . publicKey ) ; devices [ i ] . keyHandle = NULL ; devices [ i ] . publicKey = NULL ; } * n_devs = 0 ; i = 0 ; while ( ( s_token = strtok_r ( NULL , \",\" , & saveptr ) ) ) { devices [ i ] . keyHandle = NULL ; devices [ i ] . publicKey = NULL ; if ( ( * n_devs ) ++ > MAX_DEVS - 1 ) { * n_devs = MAX_DEVS ; if ( verbose ) D ( debug_file , \"Found<S2SV_blank>more<S2SV_blank>than<S2SV_blank>%d<S2SV_blank>devices,<S2SV_blank>ignoring<S2SV_blank>the<S2SV_blank>remaining<S2SV_blank>ones\" , MAX_DEVS ) ; break ; } if ( verbose ) D ( debug_file , \"KeyHandle<S2SV_blank>for<S2SV_blank>device<S2SV_blank>number<S2SV_blank>%d:<S2SV_blank>%s\" , i + 1 , s_token ) ; devices [ i ] . keyHandle = strdup ( s_token ) ; if ( ! devices [ i ] . keyHandle ) { if ( verbose ) D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>keyHandle<S2SV_blank>number<S2SV_blank>%d\" , i ) ; goto err ; } s_token = strtok_r ( NULL , \":\" , & saveptr ) ; if ( ! s_token ) { if ( verbose ) D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>publicKey<S2SV_blank>number<S2SV_blank>%d\" , i + 1 ) ; goto err ; } if ( verbose ) D ( debug_file , \"publicKey<S2SV_blank>for<S2SV_blank>device<S2SV_blank>number<S2SV_blank>%d:<S2SV_blank>%s\" , i + 1 , s_token ) ; if ( strlen ( s_token ) % 2 != 0 ) { if ( verbose ) D ( debug_file , \"Length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>not<S2SV_blank>even\" , i + 1 ) ; goto err ; } devices [ i ] . key_len = strlen ( s_token ) / 2 ; if ( verbose ) D ( debug_file , \"Length<S2SV_blank>of<S2SV_blank>key<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>%zu\" , i + 1 , devices [ i ] . key_len ) ; devices [ i ] . publicKey = malloc ( ( sizeof ( unsigned char ) * devices [ i ] . key_len ) ) ; if ( ! devices [ i ] . publicKey ) { if ( verbose ) D ( debug_file , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>publicKey<S2SV_blank>number<S2SV_blank>%d\" , i ) ; goto err ; } for ( j = 0 ; j < devices [ i ] . key_len ; j ++ ) { unsigned int x ; if ( sscanf ( & s_token [ 2 * j ] , \"%2x\" , & x ) != 1 ) { if ( verbose ) D ( debug_file , \"Invalid<S2SV_blank>hex<S2SV_blank>number<S2SV_blank>in<S2SV_blank>key\" ) ; goto err ; } devices [ i ] . publicKey [ j ] = ( unsigned char ) x ; } i ++ ; } } } if ( verbose ) D ( debug_file , \"Found<S2SV_blank>%d<S2SV_blank>device(s)<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\" , * n_devs , username ) ; retval = 1 ; goto out ; err : for ( i = 0 ; i < * n_devs ; i ++ ) { free ( devices [ i ] . keyHandle ) ; free ( devices [ i ] . publicKey ) ; devices [ i ] . keyHandle = NULL ; devices [ i ] . publicKey = NULL ; } * n_devs = 0 ; out : if ( buf ) { free ( buf ) ; buf = NULL ; } if ( opwfile ) fclose ( opwfile ) ; <S2SV_StartBug> else if ( fd >= 0 ) <S2SV_EndBug> close ( fd ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> authfile , O_RDONLY | O_CLOEXEC | O_NOCTTY <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; goto err ; } else { fd = - 1 <S2SV_ModStart> opwfile ) ; <S2SV_ModEnd> if ( fd <S2SV_ModStart> if ( fd != - 1 <S2SV_ModEnd> ) close (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 void hostap_setup_dev ( struct net_device * dev , local_info_t * local , int type ) { struct hostap_interface * iface ; iface = netdev_priv ( dev ) ; <S2SV_StartBug> ether_setup ( dev ) ; <S2SV_EndBug> if ( iface ) { iface -> wireless_data . spy_data = & iface -> spy_data ; dev -> wireless_data = & iface -> wireless_data ; } dev -> wireless_handlers = & hostap_iw_handler_def ; dev -> watchdog_timeo = TX_TIMEOUT ; switch ( type ) { case HOSTAP_INTERFACE_AP : dev -> tx_queue_len = 0 ; dev -> netdev_ops = & hostap_mgmt_netdev_ops ; dev -> type = ARPHRD_IEEE80211 ; dev -> header_ops = & hostap_80211_ops ; break ; case HOSTAP_INTERFACE_MASTER : dev -> netdev_ops = & hostap_master_ops ; break ; default : dev -> tx_queue_len = 0 ; dev -> netdev_ops = & hostap_netdev_ops ; } dev -> mtu = local -> mtu ; SET_ETHTOOL_OPS ( dev , & prism2_ethtool_ops ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( dev ) ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 static void doPost ( HttpRequest req , HttpResponse res ) { set_content_type ( res , \"text/html\" ) ; <S2SV_StartBug> if ( ACTION ( RUN ) ) <S2SV_EndBug> handle_run ( req , res ) ; else if ( ACTION ( STATUS ) ) print_status ( req , res , 1 ) ; else if ( ACTION ( STATUS2 ) ) print_status ( req , res , 2 ) ; else if ( ACTION ( SUMMARY ) ) print_summary ( req , res ) ; else if ( ACTION ( REPORT ) ) _printReport ( req , res ) ; else if ( ACTION ( DOACTION ) ) <S2SV_StartBug> handle_do_action ( req , res ) ; <S2SV_EndBug> else <S2SV_StartBug> handle_action ( req , res ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ACTION ( RUNTIME ) ) handle_runtime_action ( req , res ) ; else if ( ACTION ( VIEWLOG ) ) do_viewlog <S2SV_ModEnd> ( req , <S2SV_ModStart> DOACTION ) ) handle_doaction <S2SV_ModEnd> ( req , <S2SV_ModStart> ) ; else handle_service_action <S2SV_ModEnd> ( req ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int jas_iccgetuint32 ( jas_stream_t * in , jas_iccuint32_t * val ) { <S2SV_StartBug> ulonglong tmp ; <S2SV_EndBug> if ( jas_iccgetuint ( in , 4 , & tmp ) ) return - 1 ; * val = tmp ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { jas_ulonglong <S2SV_ModEnd> tmp ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6974\n\n```\nCWE-362 static int kvm_ioctl_create_device ( struct kvm * kvm , struct kvm_create_device * cd ) { struct kvm_device_ops * ops = NULL ; struct kvm_device * dev ; bool test = cd -> flags & KVM_CREATE_DEVICE_TEST ; int ret ; if ( cd -> type >= ARRAY_SIZE ( kvm_device_ops_table ) ) return - ENODEV ; ops = kvm_device_ops_table [ cd -> type ] ; if ( ops == NULL ) return - ENODEV ; if ( test ) return 0 ; dev = kzalloc ( sizeof ( * dev ) , GFP_KERNEL ) ; if ( ! dev ) return - ENOMEM ; dev -> ops = ops ; dev -> kvm = kvm ; mutex_lock ( & kvm -> lock ) ; ret = ops -> create ( dev , cd -> type ) ; if ( ret < 0 ) { mutex_unlock ( & kvm -> lock ) ; kfree ( dev ) ; return ret ; } list_add ( & dev -> vm_node , & kvm -> devices ) ; mutex_unlock ( & kvm -> lock ) ; if ( ops -> init ) ops -> init ( dev ) ; <S2SV_StartBug> ret = anon_inode_getfd ( ops -> name , & kvm_device_fops , dev , O_RDWR | O_CLOEXEC ) ; <S2SV_EndBug> if ( ret < 0 ) { <S2SV_StartBug> mutex_lock ( & kvm -> lock ) ; <S2SV_EndBug> list_del ( & dev -> vm_node ) ; mutex_unlock ( & kvm -> lock ) ; ops -> destroy ( dev ) ; return ret ; } <S2SV_StartBug> kvm_get_kvm ( kvm ) ; <S2SV_EndBug> cd -> fd = ret ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) ; kvm_get_kvm ( kvm ) ; <S2SV_ModStart> 0 ) { kvm_put_kvm ( kvm ) ; <S2SV_ModStart> ret ; } <S2SV_ModEnd> cd -> fd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5096\n\n```\nCWE-190 PHPAPI PHP_FUNCTION ( fread ) { zval * arg1 ; long len ; php_stream * stream ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"rl\" , & arg1 , & len ) == FAILURE ) { RETURN_FALSE ; } PHP_STREAM_TO_ZVAL ( stream , & arg1 ) ; if ( len <= 0 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Length<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\" ) ; RETURN_FALSE ; } <S2SV_StartBug> Z_STRVAL_P ( return_value ) = emalloc ( len + 1 ) ; <S2SV_EndBug> Z_STRLEN_P ( return_value ) = php_stream_read ( stream , Z_STRVAL_P ( return_value ) , len ) ; Z_STRVAL_P ( return_value ) [ Z_STRLEN_P ( return_value ) ] = 0 ; Z_TYPE_P ( return_value ) = IS_STRING ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RETURN_FALSE ; } if ( len > INT_MAX ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Length<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>no<S2SV_blank>more<S2SV_blank>than<S2SV_blank>%d\" , INT_MAX ) ; RETURN_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11378\n\n```\nCWE-119 int wasm_dis ( WasmOp * op , const unsigned char * buf , int buf_len ) { op -> len = 1 ; op -> op = buf [ 0 ] ; if ( op -> op > 0xbf ) { return 1 ; } WasmOpDef * opdef = & opcodes [ op -> op ] ; switch ( op -> op ) { case WASM_OP_TRAP : case WASM_OP_NOP : case WASM_OP_ELSE : case WASM_OP_RETURN : case WASM_OP_DROP : case WASM_OP_SELECT : case WASM_OP_I32EQZ : case WASM_OP_I32EQ : case WASM_OP_I32NE : case WASM_OP_I32LTS : case WASM_OP_I32LTU : case WASM_OP_I32GTS : case WASM_OP_I32GTU : case WASM_OP_I32LES : case WASM_OP_I32LEU : case WASM_OP_I32GES : case WASM_OP_I32GEU : case WASM_OP_I64EQZ : case WASM_OP_I64EQ : case WASM_OP_I64NE : case WASM_OP_I64LTS : case WASM_OP_I64LTU : case WASM_OP_I64GTS : case WASM_OP_I64GTU : case WASM_OP_I64LES : case WASM_OP_I64LEU : case WASM_OP_I64GES : case WASM_OP_I64GEU : case WASM_OP_F32EQ : case WASM_OP_F32NE : case WASM_OP_F32LT : case WASM_OP_F32GT : case WASM_OP_F32LE : case WASM_OP_F32GE : case WASM_OP_F64EQ : case WASM_OP_F64NE : case WASM_OP_F64LT : case WASM_OP_F64GT : case WASM_OP_F64LE : case WASM_OP_F64GE : case WASM_OP_I32CLZ : case WASM_OP_I32CTZ : case WASM_OP_I32POPCNT : case WASM_OP_I32ADD : case WASM_OP_I32SUB : case WASM_OP_I32MUL : case WASM_OP_I32DIVS : case WASM_OP_I32DIVU : case WASM_OP_I32REMS : case WASM_OP_I32REMU : case WASM_OP_I32AND : case WASM_OP_I32OR : case WASM_OP_I32XOR : case WASM_OP_I32SHL : case WASM_OP_I32SHRS : case WASM_OP_I32SHRU : case WASM_OP_I32ROTL : case WASM_OP_I32ROTR : case WASM_OP_I64CLZ : case WASM_OP_I64CTZ : case WASM_OP_I64POPCNT : case WASM_OP_I64ADD : case WASM_OP_I64SUB : case WASM_OP_I64MUL : case WASM_OP_I64DIVS : case WASM_OP_I64DIVU : case WASM_OP_I64REMS : case WASM_OP_I64REMU : case WASM_OP_I64AND : case WASM_OP_I64OR : case WASM_OP_I64XOR : case WASM_OP_I64SHL : case WASM_OP_I64SHRS : case WASM_OP_I64SHRU : case WASM_OP_I64ROTL : case WASM_OP_I64ROTR : case WASM_OP_F32ABS : case WASM_OP_F32NEG : case WASM_OP_F32CEIL : case WASM_OP_F32FLOOR : case WASM_OP_F32TRUNC : case WASM_OP_F32NEAREST : case WASM_OP_F32SQRT : case WASM_OP_F32ADD : case WASM_OP_F32SUB : case WASM_OP_F32MUL : case WASM_OP_F32DIV : case WASM_OP_F32MIN : case WASM_OP_F32MAX : case WASM_OP_F32COPYSIGN : case WASM_OP_F64ABS : case WASM_OP_F64NEG : case WASM_OP_F64CEIL : case WASM_OP_F64FLOOR : case WASM_OP_F64TRUNC : case WASM_OP_F64NEAREST : case WASM_OP_F64SQRT : case WASM_OP_F64ADD : case WASM_OP_F64SUB : case WASM_OP_F64MUL : case WASM_OP_F64DIV : case WASM_OP_F64MIN : case WASM_OP_F64MAX : case WASM_OP_F64COPYSIGN : case WASM_OP_I32WRAPI64 : case WASM_OP_I32TRUNCSF32 : case WASM_OP_I32TRUNCUF32 : case WASM_OP_I32TRUNCSF64 : case WASM_OP_I32TRUNCUF64 : case WASM_OP_I64EXTENDSI32 : case WASM_OP_I64EXTENDUI32 : case WASM_OP_I64TRUNCSF32 : case WASM_OP_I64TRUNCUF32 : case WASM_OP_I64TRUNCSF64 : case WASM_OP_I64TRUNCUF64 : case WASM_OP_F32CONVERTSI32 : case WASM_OP_F32CONVERTUI32 : case WASM_OP_F32CONVERTSI64 : case WASM_OP_F32CONVERTUI64 : case WASM_OP_F32DEMOTEF64 : case WASM_OP_F64CONVERTSI32 : case WASM_OP_F64CONVERTUI32 : case WASM_OP_F64CONVERTSI64 : case WASM_OP_F64CONVERTUI64 : case WASM_OP_F64PROMOTEF32 : case WASM_OP_I32REINTERPRETF32 : case WASM_OP_I64REINTERPRETF64 : case WASM_OP_F32REINTERPRETI32 : case WASM_OP_F64REINTERPRETI64 : case WASM_OP_END : { snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s\" , opdef -> txt ) ; } break ; case WASM_OP_BLOCK : case WASM_OP_LOOP : case WASM_OP_IF : { st32 val = 0 ; size_t n = read_i32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; switch ( 0x80 - val ) { case R_BIN_WASM_VALUETYPE_EMPTY : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_i32 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>i32)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_i64 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>i64)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_f32 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>f32)\" , opdef -> txt ) ; break ; case R_BIN_WASM_VALUETYPE_f64 : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>f64)\" , opdef -> txt ) ; break ; default : snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>(result<S2SV_blank>?)\" , opdef -> txt ) ; break ; } op -> len += n ; } break ; case WASM_OP_BR : case WASM_OP_BRIF : case WASM_OP_CALL : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_BRTABLE : { ut32 count = 0 , * table = NULL , def = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & count ) ; if ( ! ( n > 0 && n < buf_len ) ) { goto err ; } if ( ! ( table = calloc ( count , sizeof ( ut32 ) ) ) ) { goto err ; } int i = 0 ; op -> len += n ; for ( i = 0 ; i < count ; i ++ ) { n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & table [ i ] ) ; if ( ! ( op -> len + n <= buf_len ) ) { goto beach ; } op -> len += n ; } n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & def ) ; if ( ! ( n > 0 && n + op -> len < buf_len ) ) { goto beach ; } op -> len += n ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>\" , opdef -> txt , count ) ; <S2SV_StartBug> for ( i = 0 ; i < count && strlen ( op -> txt ) + 10 < R_ASM_BUFSIZE ; i ++ ) { <S2SV_EndBug> <S2SV_StartBug> int optxtlen = strlen ( op -> txt ) ; <S2SV_EndBug> snprintf ( op -> txt + optxtlen , R_ASM_BUFSIZE - optxtlen , \"%d<S2SV_blank>\" , table [ i ] ) ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> snprintf ( op -> txt + strlen ( op -> txt ) , R_ASM_BUFSIZE , \"%d\" , def ) ; <S2SV_EndBug> free ( table ) ; break ; beach : free ( table ) ; goto err ; } break ; case WASM_OP_CALLINDIRECT : { ut32 val = 0 , reserved = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; op -> len += n ; n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & reserved ) ; if ( ! ( n == 1 && op -> len + n <= buf_len ) ) goto err ; reserved &= 0x1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>%d\" , opdef -> txt , val , reserved ) ; op -> len += n ; } break ; case WASM_OP_GETLOCAL : case WASM_OP_SETLOCAL : case WASM_OP_TEELOCAL : case WASM_OP_GETGLOBAL : case WASM_OP_SETGLOBAL : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_I32LOAD : case WASM_OP_I64LOAD : case WASM_OP_F32LOAD : case WASM_OP_F64LOAD : case WASM_OP_I32LOAD8S : case WASM_OP_I32LOAD8U : case WASM_OP_I32LOAD16S : case WASM_OP_I32LOAD16U : case WASM_OP_I64LOAD8S : case WASM_OP_I64LOAD8U : case WASM_OP_I64LOAD16S : case WASM_OP_I64LOAD16U : case WASM_OP_I64LOAD32S : case WASM_OP_I64LOAD32U : case WASM_OP_I32STORE : case WASM_OP_I64STORE : case WASM_OP_F32STORE : case WASM_OP_F64STORE : case WASM_OP_I32STORE8 : case WASM_OP_I32STORE16 : case WASM_OP_I64STORE8 : case WASM_OP_I64STORE16 : case WASM_OP_I64STORE32 : { ut32 flag = 0 , offset = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & flag ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; op -> len += n ; n = read_u32_leb128 ( buf + op -> len , buf + buf_len , & offset ) ; if ( ! ( n > 0 && op -> len + n <= buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d<S2SV_blank>%d\" , opdef -> txt , flag , offset ) ; op -> len += n ; } break ; case WASM_OP_CURRENTMEMORY : case WASM_OP_GROWMEMORY : { ut32 reserved = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & reserved ) ; if ( ! ( n == 1 && n < buf_len ) ) goto err ; reserved &= 0x1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%d\" , opdef -> txt , reserved ) ; op -> len += n ; } break ; case WASM_OP_I32CONST : { st32 val = 0 ; size_t n = read_i32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" PFMT32d , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_I64CONST : { st64 val = 0 ; size_t n = read_i64_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" PFMT64d , opdef -> txt , val ) ; op -> len += n ; } break ; case WASM_OP_F32CONST : { ut32 val = 0 ; size_t n = read_u32_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; long double d = ( long double ) val ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" LDBLFMT , opdef -> txt , d ) ; op -> len += n ; } break ; case WASM_OP_F64CONST : { ut64 val = 0 ; size_t n = read_u64_leb128 ( buf + 1 , buf + buf_len , & val ) ; if ( ! ( n > 0 && n < buf_len ) ) goto err ; long double d = ( long double ) val ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"%s<S2SV_blank>%\" LDBLFMT , opdef -> txt , d ) ; op -> len += n ; } break ; default : goto err ; } return op -> len ; err : op -> len = 1 ; snprintf ( op -> txt , R_ASM_BUFSIZE , \"invalid\" ) ; return op -> len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count ) ; char * txt = op -> txt ; int txtLen = strlen ( op -> txt ) ; int txtLeft = R_ASM_BUFSIZE - txtLen ; txt += txtLen ; <S2SV_ModStart> < count && txtLen <S2SV_ModEnd> + 10 < <S2SV_ModStart> ++ ) { snprintf ( txt , txtLeft <S2SV_ModEnd> , \"%d<S2SV_blank>\" , <S2SV_ModStart> ] ) ; txtLen = strlen ( txt ) ; txt += txtLen ; txtLeft -= txtLen ; <S2SV_ModStart> } snprintf ( txt , txtLeft - 1 <S2SV_ModEnd> , \"%d\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 static int ssl_scan_clienthello_tlsext ( SSL * s , PACKET * pkt , int * al ) { unsigned int type ; int renegotiate_seen = 0 ; PACKET extensions ; * al = SSL_AD_DECODE_ERROR ; s -> servername_done = 0 ; s -> tlsext_status_type = - 1 ; # ifndef OPENSSL_NO_NEXTPROTONEG s -> s3 -> next_proto_neg_seen = 0 ; # endif OPENSSL_free ( s -> s3 -> alpn_selected ) ; s -> s3 -> alpn_selected = NULL ; s -> s3 -> alpn_selected_len = 0 ; OPENSSL_free ( s -> s3 -> alpn_proposed ) ; s -> s3 -> alpn_proposed = NULL ; s -> s3 -> alpn_proposed_len = 0 ; # ifndef OPENSSL_NO_HEARTBEATS s -> tlsext_heartbeat &= ~ ( SSL_DTLSEXT_HB_ENABLED | SSL_DTLSEXT_HB_DONT_SEND_REQUESTS ) ; # endif # ifndef OPENSSL_NO_EC if ( s -> options & SSL_OP_SAFARI_ECDHE_ECDSA_BUG ) ssl_check_for_safari ( s , pkt ) ; # endif OPENSSL_free ( s -> s3 -> tmp . peer_sigalgs ) ; s -> s3 -> tmp . peer_sigalgs = NULL ; <S2SV_StartBug> s -> s3 -> flags &= ~ TLS1_FLAGS_ENCRYPT_THEN_MAC ; <S2SV_EndBug> # ifndef OPENSSL_NO_SRP OPENSSL_free ( s -> srp_ctx . login ) ; s -> srp_ctx . login = NULL ; # endif s -> srtp_profile = NULL ; if ( PACKET_remaining ( pkt ) == 0 ) goto ri_check ; if ( ! PACKET_as_length_prefixed_2 ( pkt , & extensions ) ) return 0 ; if ( ! tls1_check_duplicate_extensions ( & extensions ) ) return 0 ; while ( PACKET_get_net_2 ( & extensions , & type ) ) { PACKET extension ; if ( ! PACKET_get_length_prefixed_2 ( & extensions , & extension ) ) return 0 ; if ( s -> tlsext_debug_cb ) s -> tlsext_debug_cb ( s , 0 , type , PACKET_data ( & extension ) , PACKET_remaining ( & extension ) , s -> tlsext_debug_arg ) ; if ( type == TLSEXT_TYPE_renegotiate ) { if ( ! ssl_parse_clienthello_renegotiate_ext ( s , & extension , al ) ) return 0 ; renegotiate_seen = 1 ; } else if ( s -> version == SSL3_VERSION ) { } else if ( type == TLSEXT_TYPE_server_name ) { unsigned int servname_type ; PACKET sni , hostname ; if ( ! PACKET_as_length_prefixed_2 ( & extension , & sni ) || PACKET_remaining ( & sni ) == 0 ) { return 0 ; } if ( ! PACKET_get_1 ( & sni , & servname_type ) || servname_type != TLSEXT_NAMETYPE_host_name || ! PACKET_as_length_prefixed_2 ( & sni , & hostname ) ) { return 0 ; } if ( ! s -> hit ) { if ( PACKET_remaining ( & hostname ) > TLSEXT_MAXLEN_host_name ) { * al = TLS1_AD_UNRECOGNIZED_NAME ; return 0 ; } if ( PACKET_contains_zero_byte ( & hostname ) ) { * al = TLS1_AD_UNRECOGNIZED_NAME ; return 0 ; } if ( ! PACKET_strndup ( & hostname , & s -> session -> tlsext_hostname ) ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } s -> servername_done = 1 ; } else { s -> servername_done = s -> session -> tlsext_hostname && PACKET_equal ( & hostname , s -> session -> tlsext_hostname , strlen ( s -> session -> tlsext_hostname ) ) ; } } # ifndef OPENSSL_NO_SRP else if ( type == TLSEXT_TYPE_srp ) { PACKET srp_I ; if ( ! PACKET_as_length_prefixed_1 ( & extension , & srp_I ) ) return 0 ; if ( PACKET_contains_zero_byte ( & srp_I ) ) return 0 ; if ( ! PACKET_strndup ( & srp_I , & s -> srp_ctx . login ) ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } } # endif # ifndef OPENSSL_NO_EC else if ( type == TLSEXT_TYPE_ec_point_formats ) { PACKET ec_point_format_list ; if ( ! PACKET_as_length_prefixed_1 ( & extension , & ec_point_format_list ) || PACKET_remaining ( & ec_point_format_list ) == 0 ) { return 0 ; } if ( ! s -> hit ) { if ( ! PACKET_memdup ( & ec_point_format_list , & s -> session -> tlsext_ecpointformatlist , & s -> session -> tlsext_ecpointformatlist_length ) ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } } } else if ( type == TLSEXT_TYPE_elliptic_curves ) { PACKET elliptic_curve_list ; if ( ! PACKET_as_length_prefixed_2 ( & extension , & elliptic_curve_list ) || PACKET_remaining ( & elliptic_curve_list ) == 0 || ( PACKET_remaining ( & elliptic_curve_list ) % 2 ) != 0 ) { return 0 ; } if ( ! s -> hit ) { if ( ! PACKET_memdup ( & elliptic_curve_list , & s -> session -> tlsext_ellipticcurvelist , & s -> session -> tlsext_ellipticcurvelist_length ) ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } } } # endif else if ( type == TLSEXT_TYPE_session_ticket ) { if ( s -> tls_session_ticket_ext_cb && ! s -> tls_session_ticket_ext_cb ( s , PACKET_data ( & extension ) , PACKET_remaining ( & extension ) , s -> tls_session_ticket_ext_cb_arg ) ) { * al = TLS1_AD_INTERNAL_ERROR ; return 0 ; } } else if ( type == TLSEXT_TYPE_signature_algorithms ) { PACKET supported_sig_algs ; if ( ! PACKET_as_length_prefixed_2 ( & extension , & supported_sig_algs ) || ( PACKET_remaining ( & supported_sig_algs ) % 2 ) != 0 || PACKET_remaining ( & supported_sig_algs ) == 0 ) { return 0 ; } if ( ! s -> hit ) { if ( ! tls1_save_sigalgs ( s , PACKET_data ( & supported_sig_algs ) , PACKET_remaining ( & supported_sig_algs ) ) ) { return 0 ; } } } else if ( type == TLSEXT_TYPE_status_request ) { if ( ! PACKET_get_1 ( & extension , ( unsigned int * ) & s -> tlsext_status_type ) ) { return 0 ; } # ifndef OPENSSL_NO_OCSP if ( s -> tlsext_status_type == TLSEXT_STATUSTYPE_ocsp ) { const unsigned char * ext_data ; PACKET responder_id_list , exts ; if ( ! PACKET_get_length_prefixed_2 ( & extension , & responder_id_list ) ) return 0 ; sk_OCSP_RESPID_pop_free ( s -> tlsext_ocsp_ids , OCSP_RESPID_free ) ; if ( PACKET_remaining ( & responder_id_list ) > 0 ) { s -> tlsext_ocsp_ids = sk_OCSP_RESPID_new_null ( ) ; if ( s -> tlsext_ocsp_ids == NULL ) { * al = SSL_AD_INTERNAL_ERROR ; return 0 ; } } else { s -> tlsext_ocsp_ids = NULL ; } while ( PACKET_remaining ( & responder_id_list ) > 0 ) { OCSP_RESPID * id ; PACKET responder_id ; const unsigned char * id_data ; if ( ! PACKET_get_length_prefixed_2 ( & responder_id_list , & responder_id ) || PACKET_remaining ( & responder_id ) == 0 ) { return 0 ; } id_data = PACKET_data ( & responder_id ) ; id = d2i_OCSP_RESPID ( NULL , & id_data , PACKET_remaining ( & responder_id ) ) ; if ( id == NULL ) return 0 ; if ( id_data != PACKET_end ( & responder_id ) ) { OCSP_RESPID_free ( id ) ; return 0 ; } if ( ! sk_OCSP_RESPID_push ( s -> tlsext_ocsp_ids , id ) ) { OCSP_RESPID_free ( id ) ; * al = SSL_AD_INTERNAL_ERROR ; return 0 ; } } if ( ! PACKET_as_length_prefixed_2 ( & extension , & exts ) ) return 0 ; if ( PACKET_remaining ( & exts ) > 0 ) { ext_data = PACKET_data ( & exts ) ; sk_X509_EXTENSION_pop_free ( s -> tlsext_ocsp_exts , X509_EXTENSION_free ) ; s -> tlsext_ocsp_exts = d2i_X509_EXTENSIONS ( NULL , & ext_data , PACKET_remaining ( & exts ) ) ; if ( s -> tlsext_ocsp_exts == NULL || ext_data != PACKET_end ( & exts ) ) { return 0 ; } } } else # endif { s -> tlsext_status_type = - 1 ; } } # ifndef OPENSSL_NO_HEARTBEATS else if ( SSL_IS_DTLS ( s ) && type == TLSEXT_TYPE_heartbeat ) { unsigned int hbtype ; if ( ! PACKET_get_1 ( & extension , & hbtype ) || PACKET_remaining ( & extension ) ) { * al = SSL_AD_DECODE_ERROR ; return 0 ; } switch ( hbtype ) { case 0x01 : s -> tlsext_heartbeat |= SSL_DTLSEXT_HB_ENABLED ; break ; case 0x02 : s -> tlsext_heartbeat |= SSL_DTLSEXT_HB_ENABLED ; s -> tlsext_heartbeat |= SSL_DTLSEXT_HB_DONT_SEND_REQUESTS ; break ; default : * al = SSL_AD_ILLEGAL_PARAMETER ; return 0 ; } } # endif # ifndef OPENSSL_NO_NEXTPROTONEG else if ( type == TLSEXT_TYPE_next_proto_neg && s -> s3 -> tmp . finish_md_len == 0 ) { s -> s3 -> next_proto_neg_seen = 1 ; } # endif else if ( type == TLSEXT_TYPE_application_layer_protocol_negotiation && s -> s3 -> tmp . finish_md_len == 0 ) { if ( ! tls1_alpn_handle_client_hello ( s , & extension , al ) ) return 0 ; } # ifndef OPENSSL_NO_SRTP else if ( SSL_IS_DTLS ( s ) && SSL_get_srtp_profiles ( s ) && type == TLSEXT_TYPE_use_srtp ) { if ( ssl_parse_clienthello_use_srtp_ext ( s , & extension , al ) ) return 0 ; } # endif else if ( type == TLSEXT_TYPE_encrypt_then_mac ) <S2SV_StartBug> s -> s3 -> flags |= TLS1_FLAGS_ENCRYPT_THEN_MAC ; <S2SV_EndBug> else if ( ! s -> hit ) { if ( custom_ext_parse ( s , 1 , type , PACKET_data ( & extension ) , PACKET_remaining ( & extension ) , al ) <= 0 ) return 0 ; } } if ( PACKET_remaining ( pkt ) != 0 ) { * al = SSL_AD_INTERNAL_ERROR ; return 0 ; } ri_check : if ( ! renegotiate_seen && s -> renegotiate && ! ( s -> options & SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION ) ) { * al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL_SCAN_CLIENTHELLO_TLSEXT , SSL_R_UNSAFE_LEGACY_RENEGOTIATION_DISABLED ) ; return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; s -> tlsext_use_etm = 0 <S2SV_ModEnd> ; # ifndef <S2SV_ModStart> ) s -> tlsext_use_etm = 1 <S2SV_ModEnd> ; else if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5104\n\n```\nCWE-284 int socket_accept ( int fd , uint16_t port ) { # ifdef WIN32 int addr_len ; # else socklen_t addr_len ; # endif int result ; struct sockaddr_in addr ; memset ( & addr , 0 , sizeof ( addr ) ) ; addr . sin_family = AF_INET ; <S2SV_StartBug> addr . sin_addr . s_addr = htonl ( INADDR_ANY ) ; <S2SV_EndBug> addr . sin_port = htons ( port ) ; addr_len = sizeof ( addr ) ; result = accept ( fd , ( struct sockaddr * ) & addr , & addr_len ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = htonl ( INADDR_LOOPBACK <S2SV_ModEnd> ) ; addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15140\n\n```\nCWE-416 static Image * ReadMATImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * image2 = NULL , * rotated_image ; register Quantum * q ; unsigned int status ; MATHeader MATLAB_HDR ; size_t size ; size_t CellType ; QuantumInfo * quantum_info ; ImageInfo * clone_info ; int i ; ssize_t ldblk ; unsigned char * BImgBuff = NULL ; double MinVal , MaxVal ; unsigned z , z2 ; unsigned Frames ; int logging ; int sample_size ; MagickOffsetType filepos = 0x80 ; unsigned int ( * ReadBlobXXXLong ) ( Image * image ) ; unsigned short ( * ReadBlobXXXShort ) ( Image * image ) ; void ( * ReadBlobDoublesXXX ) ( Image * image , size_t len , double * data ) ; void ( * ReadBlobFloatsXXX ) ( Image * image , size_t len , float * data ) ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; logging = LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"enter\" ) ; image = AcquireImage ( image_info , exception ) ; image2 = ( Image * ) NULL ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } quantum_info = ( QuantumInfo * ) NULL ; clone_info = ( ImageInfo * ) NULL ; if ( ReadBlob ( image , 124 , ( unsigned char * ) & MATLAB_HDR . identific ) != 124 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( strncmp ( MATLAB_HDR . identific , \"MATLAB\" , 6 ) != 0 ) { image = ReadMATImageV4 ( image_info , image , exception ) ; if ( image == NULL ) { if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; return ( ( Image * ) NULL ) ; } goto END_OF_READING ; } MATLAB_HDR . Version = ReadBlobLSBShort ( image ) ; if ( ReadBlob ( image , 2 , ( unsigned char * ) & MATLAB_HDR . EndianIndicator ) != 2 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Endian<S2SV_blank>%c%c\" , MATLAB_HDR . EndianIndicator [ 0 ] , MATLAB_HDR . EndianIndicator [ 1 ] ) ; if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"IM\" , 2 ) ) { ReadBlobXXXLong = ReadBlobLSBLong ; ReadBlobXXXShort = ReadBlobLSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesLSB ; ReadBlobFloatsXXX = ReadBlobFloatsLSB ; image -> endian = LSBEndian ; } else if ( ! strncmp ( MATLAB_HDR . EndianIndicator , \"MI\" , 2 ) ) { ReadBlobXXXLong = ReadBlobMSBLong ; ReadBlobXXXShort = ReadBlobMSBShort ; ReadBlobDoublesXXX = ReadBlobDoublesMSB ; ReadBlobFloatsXXX = ReadBlobFloatsMSB ; image -> endian = MSBEndian ; } else { MATLAB_KO : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } filepos = TellBlob ( image ) ; <S2SV_StartBug> while ( ! EOFBlob ( image ) ) <S2SV_EndBug> { Frames = 1 ; <S2SV_StartBug> if ( filepos != ( unsigned int ) filepos ) <S2SV_EndBug> break ; if ( SeekBlob ( image , filepos , SEEK_SET ) != filepos ) break ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; MATLAB_HDR . ObjectSize = ReadBlobXXXLong ( image ) ; if ( EOFBlob ( image ) ) break ; <S2SV_StartBug> if ( ( MagickSizeType ) ( MATLAB_HDR . ObjectSize + filepos ) > GetBlobSize ( image ) ) <S2SV_EndBug> goto MATLAB_KO ; filepos += ( MagickOffsetType ) MATLAB_HDR . ObjectSize + 4 + 4 ; if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; clone_info = CloneImageInfo ( image_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; image2 = image ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( MATLAB_HDR . DataType == miCOMPRESSED ) { image2 = decompress_block ( image , & MATLAB_HDR . ObjectSize , clone_info , exception ) ; if ( image2 == NULL ) continue ; MATLAB_HDR . DataType = ReadBlobXXXLong ( image2 ) ; } # endif if ( MATLAB_HDR . DataType != miMATRIX ) { clone_info = DestroyImageInfo ( clone_info ) ; # if defined ( MAGICKCORE_ZLIB_DELEGATE ) if ( image2 != image ) DeleteImageFromList ( & image2 ) ; # endif continue ; } MATLAB_HDR . unknown1 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown2 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown5 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . StructureClass = MATLAB_HDR . unknown5 & 0xFF ; MATLAB_HDR . StructureFlag = ( MATLAB_HDR . unknown5 >> 8 ) & 0xFF ; MATLAB_HDR . unknown3 = ReadBlobXXXLong ( image2 ) ; if ( image != image2 ) MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . unknown4 = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . DimFlag = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeX = ReadBlobXXXLong ( image2 ) ; MATLAB_HDR . SizeY = ReadBlobXXXLong ( image2 ) ; switch ( MATLAB_HDR . DimFlag ) { case 8 : z2 = z = 1 ; break ; case 12 : z2 = z = ReadBlobXXXLong ( image2 ) ; ( void ) ReadBlobXXXLong ( image2 ) ; if ( z != 3 ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } break ; case 16 : z2 = z = ReadBlobXXXLong ( image2 ) ; if ( z != 3 && z != 1 ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } Frames = ReadBlobXXXLong ( image2 ) ; if ( Frames == 0 ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } if ( AcquireMagickResource ( ListLengthResource , Frames ) == MagickFalse ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( ResourceLimitError , \"ListLengthExceedsLimit\" ) ; } break ; default : if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"MultidimensionalMatricesAreNotSupported\" ) ; } MATLAB_HDR . Flag1 = ReadBlobXXXShort ( image2 ) ; MATLAB_HDR . NameFlag = ReadBlobXXXShort ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.StructureClass<S2SV_blank>%d\" , MATLAB_HDR . StructureClass ) ; if ( MATLAB_HDR . StructureClass != mxCHAR_CLASS && MATLAB_HDR . StructureClass != mxSINGLE_CLASS && MATLAB_HDR . StructureClass != mxDOUBLE_CLASS && MATLAB_HDR . StructureClass != mxINT8_CLASS && MATLAB_HDR . StructureClass != mxUINT8_CLASS && MATLAB_HDR . StructureClass != mxINT16_CLASS && MATLAB_HDR . StructureClass != mxUINT16_CLASS && MATLAB_HDR . StructureClass != mxINT32_CLASS && MATLAB_HDR . StructureClass != mxUINT32_CLASS && MATLAB_HDR . StructureClass != mxINT64_CLASS && MATLAB_HDR . StructureClass != mxUINT64_CLASS ) { if ( ( image2 != ( Image * ) NULL ) && ( image2 != image ) ) { CloseBlob ( image2 ) ; DeleteImageFromList ( & image2 ) ; } if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } switch ( MATLAB_HDR . NameFlag ) { case 0 : size = ReadBlobXXXLong ( image2 ) ; size = 4 * ( ( ( size_t ) size + 3 + 1 ) / 4 ) ; ( void ) SeekBlob ( image2 , size , SEEK_CUR ) ; break ; case 1 : case 2 : case 3 : case 4 : ( void ) ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) ; break ; default : goto MATLAB_KO ; } CellType = ReadBlobXXXLong ( image2 ) ; if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"MATLAB_HDR.CellType:<S2SV_blank>%.20g\" , ( double ) CellType ) ; if ( ReadBlob ( image2 , 4 , ( unsigned char * ) & size ) != 4 ) goto MATLAB_KO ; NEXT_FRAME : switch ( CellType ) { case miINT8 : case miUINT8 : sample_size = 8 ; if ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) image -> depth = 1 ; else image -> depth = 8 ; ldblk = ( ssize_t ) MATLAB_HDR . SizeX ; break ; case miINT16 : case miUINT16 : sample_size = 16 ; image -> depth = 16 ; ldblk = ( ssize_t ) ( 2 * MATLAB_HDR . SizeX ) ; break ; case miINT32 : case miUINT32 : sample_size = 32 ; image -> depth = 32 ; ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miINT64 : case miUINT64 : sample_size = 64 ; image -> depth = 64 ; ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; case miSINGLE : sample_size = 32 ; image -> depth = 32 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 4 * MATLAB_HDR . SizeX ) ; break ; case miDOUBLE : sample_size = 64 ; image -> depth = 64 ; ( void ) SetImageOption ( clone_info , \"quantum:format\" , \"floating-point\" ) ; DisableMSCWarning ( 4127 ) if ( sizeof ( double ) != 8 ) RestoreMSCWarning { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( CoderError , \"IncompatibleSizeOfDouble\" ) ; } if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { } ldblk = ( ssize_t ) ( 8 * MATLAB_HDR . SizeX ) ; break ; default : if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( CoderError , \"UnsupportedCellTypeInTheMatrix\" ) ; } ( void ) sample_size ; image -> columns = MATLAB_HDR . SizeX ; image -> rows = MATLAB_HDR . SizeY ; image -> colors = GetQuantumRange ( image -> depth ) ; if ( image -> columns == 0 || image -> rows == 0 ) goto MATLAB_KO ; if ( ( unsigned int ) ldblk * MATLAB_HDR . SizeY > MATLAB_HDR . ObjectSize ) goto MATLAB_KO ; if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) { image -> type = GrayscaleType ; SetImageColorspace ( image , GRAYColorspace , exception ) ; } if ( image_info -> ping ) { size_t temp = image -> columns ; image -> columns = image -> rows ; image -> rows = temp ; goto done_reading ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; return ( DestroyImageList ( image ) ) ; } ( void ) SetImageBackgroundColor ( image , exception ) ; quantum_info = AcquireQuantumInfo ( clone_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( ldblk ) , sizeof ( double ) ) ; if ( BImgBuff == NULL ) { if ( clone_info != ( ImageInfo * ) NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } ( void ) memset ( BImgBuff , 0 , ldblk * sizeof ( double ) ) ; MinVal = 0 ; MaxVal = 0 ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & quantum_info -> minimum , & quantum_info -> maximum ) ; } if ( z == 1 ) z = 0 ; do { for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { q = GetAuthenticPixels ( image , 0 , MATLAB_HDR . SizeY - i - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>set<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>returns<S2SV_blank>unexpected<S2SV_blank>NULL<S2SV_blank>on<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto done_reading ; } if ( ReadBlob ( image2 , ldblk , ( unsigned char * ) BImgBuff ) != ( ssize_t ) ldblk ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , <S2SV_StartBug> \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>scanrow<S2SV_blank>%u<S2SV_blank>from<S2SV_blank>a<S2SV_blank>file.\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; <S2SV_EndBug> goto ExitLoop ; } if ( ( CellType == miINT8 || CellType == miUINT8 ) && ( MATLAB_HDR . StructureFlag & FLAG_LOGICAL ) ) { FixLogical ( ( unsigned char * ) BImgBuff , ldblk ) ; if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) { ImportQuantumPixelsFailed : if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>ImportQuantumPixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; break ; } } else { if ( ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , z2qtype [ z ] , BImgBuff , exception ) <= 0 ) goto ImportQuantumPixelsFailed ; if ( z <= 1 && ( CellType == miINT8 || CellType == miINT16 || CellType == miINT32 || CellType == miINT64 ) ) FixSignedValues ( image , q , MATLAB_HDR . SizeX ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) { if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>MAT<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>sync<S2SV_blank>image<S2SV_blank>pixels<S2SV_blank>for<S2SV_blank>a<S2SV_blank>row<S2SV_blank>%u\" , ( unsigned ) ( MATLAB_HDR . SizeY - i - 1 ) ) ; goto ExitLoop ; } } } while ( z -- >= 2 ) ; ExitLoop : if ( i != ( long ) MATLAB_HDR . SizeY ) goto END_OF_READING ; if ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) { CellType = ReadBlobXXXLong ( image2 ) ; i = ReadBlobXXXLong ( image2 ) ; if ( CellType == miDOUBLE || CellType == miSINGLE ) { CalcMinMax ( image2 , image_info -> endian , MATLAB_HDR . SizeX , MATLAB_HDR . SizeY , CellType , ldblk , BImgBuff , & MinVal , & MaxVal ) ; } if ( CellType == miDOUBLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobDoublesXXX ( image2 , ldblk , ( double * ) BImgBuff ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; InsertComplexDoubleRow ( image , ( double * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } if ( CellType == miSINGLE ) for ( i = 0 ; i < ( ssize_t ) MATLAB_HDR . SizeY ; i ++ ) { ReadBlobFloatsXXX ( image2 , ldblk , ( float * ) BImgBuff ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; InsertComplexFloatRow ( image , ( float * ) BImgBuff , i , MinVal , MaxVal , exception ) ; } } if ( ( MATLAB_HDR . DimFlag == 8 ) && ( ( MATLAB_HDR . StructureFlag & FLAG_COMPLEX ) == 0 ) ) image -> type = GrayscaleType ; if ( image -> depth == 1 ) image -> type = BilevelType ; if ( image2 == image ) image2 = NULL ; rotated_image = RotateImage ( image , 90.0 , exception ) ; if ( rotated_image != ( Image * ) NULL ) { rotated_image -> page . x = 0 ; rotated_image -> page . y = 0 ; rotated_image -> colors = image -> colors ; DestroyBlob ( rotated_image ) ; rotated_image -> blob = ReferenceBlob ( image -> blob ) ; AppendImageToList ( & image , rotated_image ) ; DeleteImageFromList ( & image ) ; } done_reading : if ( image2 != NULL ) if ( image2 != image ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } if ( EOFBlob ( image ) != MagickFalse ) break ; AcquireNextImage ( image_info , image , exception ) ; if ( image -> next == ( Image * ) NULL ) break ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; RelinquishMagickMemory ( BImgBuff ) ; BImgBuff = NULL ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( -- Frames > 0 ) { z = z2 ; if ( image2 == NULL ) image2 = image ; if ( ! EOFBlob ( image ) && TellBlob ( image ) < filepos ) goto NEXT_FRAME ; } if ( ( image2 != NULL ) && ( image2 != image ) ) { DeleteImageFromList ( & image2 ) ; if ( clone_info ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } } } if ( clone_info ) clone_info = DestroyImageInfo ( clone_info ) ; } END_OF_READING : RelinquishMagickMemory ( BImgBuff ) ; if ( quantum_info != ( QuantumInfo * ) NULL ) quantum_info = DestroyQuantumInfo ( quantum_info ) ; CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; if ( tmp == image2 ) image2 = ( Image * ) NULL ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = scene ++ ; } if ( clone_info != NULL ) { if ( clone_info -> file ) { fclose ( clone_info -> file ) ; clone_info -> file = NULL ; ( void ) remove_utf8 ( clone_info -> filename ) ; } DestroyImageInfo ( clone_info ) ; clone_info = NULL ; } if ( logging ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"return\" ) ; if ( ( image != image2 ) && ( image2 != ( Image * ) NULL ) ) image2 = DestroyImage ( image2 ) ; if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; while ( filepos < GetBlobSize ( image ) && <S2SV_ModStart> if ( filepos > GetBlobSize ( image ) || filepos < 0 <S2SV_ModEnd> ) break ; <S2SV_ModStart> + filepos ) >= <S2SV_ModEnd> GetBlobSize ( image <S2SV_ModStart> - 1 ) ) ; ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static UINT32 nsc_rle_encode ( BYTE * in , BYTE * out , UINT32 originalSize ) <S2SV_EndBug> { UINT32 left ; UINT32 runlength = 1 ; UINT32 planeSize = 0 ; left = originalSize ; while ( left > 4 && planeSize < originalSize - 4 ) { if ( left > 5 && * in == * ( in + 1 ) ) { runlength ++ ; } else if ( runlength == 1 ) { * out ++ = * in ; planeSize ++ ; } else if ( runlength < 256 ) { * out ++ = * in ; * out ++ = * in ; * out ++ = runlength - 2 ; runlength = 1 ; planeSize += 3 ; } else { * out ++ = * in ; * out ++ = * in ; * out ++ = 0xFF ; * out ++ = ( runlength & 0x000000FF ) ; * out ++ = ( runlength & 0x0000FF00 ) >> 8 ; * out ++ = ( runlength & 0x00FF0000 ) >> 16 ; * out ++ = ( runlength & 0xFF000000 ) >> 24 ; runlength = 1 ; planeSize += 7 ; } in ++ ; left -- ; } if ( planeSize < originalSize - 4 ) CopyMemory ( out , in , 4 ) ; planeSize += 4 ; return planeSize ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> UINT32 nsc_rle_encode ( const\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void vp8_init_ctx ( vpx_codec_ctx_t * ctx , const vpx_codec_mmap_t * mmap ) <S2SV_EndBug> { int i ; <S2SV_StartBug> ctx -> priv = mmap -> base ; <S2SV_EndBug> ctx -> priv -> sz = sizeof ( * ctx -> priv ) ; ctx -> priv -> iface = ctx -> iface ; ctx -> priv -> alg_priv = mmap -> base ; for ( i = 0 ; i < NELEMENTS ( ctx -> priv -> alg_priv -> mmaps ) ; i ++ ) ctx -> priv -> alg_priv -> mmaps [ i ] . id = vp8_mem_req_segs [ i ] . id ; ctx -> priv -> alg_priv -> mmaps [ 0 ] = * mmap ; ctx -> priv -> alg_priv -> si . sz = sizeof ( ctx -> priv -> alg_priv -> si ) ; ctx -> priv -> alg_priv -> decrypt_cb = NULL ; ctx -> priv -> alg_priv -> decrypt_state = NULL ; ctx -> priv -> init_flags = ctx -> init_flags ; <S2SV_StartBug> if ( ctx -> config . dec ) <S2SV_EndBug> { <S2SV_StartBug> ctx -> priv -> alg_priv -> cfg = * ctx -> config . dec ; <S2SV_EndBug> <S2SV_StartBug> ctx -> config . dec = & ctx -> priv -> alg_priv -> cfg ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_ctx_t * ctx ) { vpx_codec_alg_priv_t * priv = ( vpx_codec_alg_priv_t * ) vpx_calloc ( 1 , sizeof ( * priv ) ) <S2SV_ModEnd> ; ctx -> <S2SV_ModStart> -> priv = ( vpx_codec_priv_t * ) priv <S2SV_ModEnd> ; ctx -> <S2SV_ModStart> -> init_flags ; priv -> si . sz = sizeof ( priv -> si ) ; priv -> decrypt_cb = NULL ; priv -> decrypt_state = NULL ; <S2SV_ModStart> dec ) { priv <S2SV_ModEnd> -> cfg = <S2SV_ModStart> dec = & priv <S2SV_ModEnd> -> cfg ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9538\n\n```\nCWE-190 static int readSeparateStripsIntoBuffer ( TIFF * in , uint8 * obuf , uint32 length , uint32 width , uint16 spp , struct dump_opts * dump ) { <S2SV_StartBug> int i , j , bytes_per_sample , bytes_per_pixel , shift_width , result = 1 ; <S2SV_EndBug> int32 bytes_read = 0 ; <S2SV_StartBug> uint16 bps , nstrips , planar , strips_per_sample ; <S2SV_EndBug> uint32 src_rowsize , dst_rowsize , rows_processed , rps ; uint32 rows_this_strip = 0 ; tsample_t s ; tstrip_t strip ; tsize_t scanlinesize = TIFFScanlineSize ( in ) ; tsize_t stripsize = TIFFStripSize ( in ) ; unsigned char * srcbuffs [ MAX_SAMPLES ] ; unsigned char * buff = NULL ; unsigned char * dst = NULL ; if ( obuf == NULL ) { TIFFError ( \"readSeparateStripsIntoBuffer\" , \"Invalid<S2SV_blank>buffer<S2SV_blank>argument\" ) ; return ( 0 ) ; } memset ( srcbuffs , '\\\\0' , sizeof ( srcbuffs ) ) ; TIFFGetField ( in , TIFFTAG_BITSPERSAMPLE , & bps ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_PLANARCONFIG , & planar ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_ROWSPERSTRIP , & rps ) ; if ( rps > length ) rps = length ; bytes_per_sample = ( bps + 7 ) / 8 ; bytes_per_pixel = ( ( bps * spp ) + 7 ) / 8 ; if ( bytes_per_pixel < ( bytes_per_sample + 1 ) ) shift_width = bytes_per_pixel ; else shift_width = bytes_per_sample + 1 ; src_rowsize = ( ( bps * width ) + 7 ) / 8 ; dst_rowsize = ( ( bps * width * spp ) + 7 ) / 8 ; dst = obuf ; if ( ( dump -> infile != NULL ) && ( dump -> level == 3 ) ) { dump_info ( dump -> infile , dump -> format , \"\" , \"Image<S2SV_blank>width<S2SV_blank>%d,<S2SV_blank>length<S2SV_blank>%d,<S2SV_blank>Scanline<S2SV_blank>size,<S2SV_blank>%4d<S2SV_blank>bytes\" , width , length , scanlinesize ) ; dump_info ( dump -> infile , dump -> format , \"\" , \"Bits<S2SV_blank>per<S2SV_blank>sample<S2SV_blank>%d,<S2SV_blank>Samples<S2SV_blank>per<S2SV_blank>pixel<S2SV_blank>%d,<S2SV_blank>Shift<S2SV_blank>width<S2SV_blank>%d\" , bps , spp , shift_width ) ; } nstrips = TIFFNumberOfStrips ( in ) ; strips_per_sample = nstrips / spp ; for ( s = 0 ; ( s < spp ) && ( s < MAX_SAMPLES ) ; s ++ ) { srcbuffs [ s ] = NULL ; buff = _TIFFmalloc ( stripsize ) ; if ( ! buff ) { TIFFError ( \"readSeparateStripsIntoBuffer\" , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>strip<S2SV_blank>read<S2SV_blank>buffer<S2SV_blank>for<S2SV_blank>sample<S2SV_blank>%d\" , s ) ; for ( i = 0 ; i < s ; i ++ ) _TIFFfree ( srcbuffs [ i ] ) ; return 0 ; } srcbuffs [ s ] = buff ; } rows_processed = 0 ; for ( j = 0 ; ( j < strips_per_sample ) && ( result == 1 ) ; j ++ ) { for ( s = 0 ; ( s < spp ) && ( s < MAX_SAMPLES ) ; s ++ ) { buff = srcbuffs [ s ] ; strip = ( s * strips_per_sample ) + j ; bytes_read = TIFFReadEncodedStrip ( in , strip , buff , stripsize ) ; rows_this_strip = bytes_read / src_rowsize ; if ( bytes_read < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>strip<S2SV_blank>%lu<S2SV_blank>for<S2SV_blank>sample<S2SV_blank>%d\" , ( unsigned long ) strip , s + 1 ) ; result = 0 ; break ; } # ifdef DEVELMODE TIFFError ( \"\" , \"Strip<S2SV_blank>%2d,<S2SV_blank>read<S2SV_blank>%5d<S2SV_blank>bytes<S2SV_blank>for<S2SV_blank>%4d<S2SV_blank>scanlines,<S2SV_blank>shift<S2SV_blank>width<S2SV_blank>%d\" , strip , bytes_read , rows_this_strip , shift_width ) ; # endif } if ( rps > rows_this_strip ) rps = rows_this_strip ; dst = obuf + ( dst_rowsize * rows_processed ) ; if ( ( bps % 8 ) == 0 ) { if ( combineSeparateSamplesBytes ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } } else { switch ( shift_width ) { case 1 : if ( combineSeparateSamples8bits ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } break ; case 2 : if ( combineSeparateSamples16bits ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } break ; case 3 : if ( combineSeparateSamples24bits ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } break ; case 4 : case 5 : case 6 : case 7 : case 8 : if ( combineSeparateSamples32bits ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } break ; default : TIFFError ( \"readSeparateStripsIntoBuffer\" , \"Unsupported<S2SV_blank>bit<S2SV_blank>depth:<S2SV_blank>%d\" , bps ) ; result = 0 ; break ; } } if ( ( rows_processed + rps ) > length ) { rows_processed = length ; rps = length - rows_processed ; } else rows_processed += rps ; } for ( s = 0 ; ( s < spp ) && ( s < MAX_SAMPLES ) ; s ++ ) { buff = srcbuffs [ s ] ; if ( buff != NULL ) _TIFFfree ( buff ) ; } return ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i , bytes_per_sample , bytes_per_pixel , shift_width , result = 1 ; uint32 j <S2SV_ModEnd> ; int32 bytes_read <S2SV_ModStart> uint16 bps , planar ; uint32 nstrips ; uint32 <S2SV_ModEnd> strips_per_sample ; uint32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-16(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0957\n\n```\nCWE-16 <S2SV_StartBug> static int override_release ( char __user * release , int len ) <S2SV_EndBug> { <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> char buf [ 65 ] ; if ( current -> personality & UNAME26 ) { <S2SV_StartBug> char * rest = UTS_RELEASE ; <S2SV_EndBug> int ndots = 0 ; <S2SV_StartBug> unsigned v ; <S2SV_EndBug> while ( * rest ) { if ( * rest == '.' && ++ ndots >= 3 ) break ; if ( ! isdigit ( * rest ) && * rest != '.' ) break ; rest ++ ; } v = ( ( LINUX_VERSION_CODE >> 8 ) & 0xff ) + 40 ; <S2SV_StartBug> snprintf ( buf , len , \"2.6.%u%s\" , v , rest ) ; <S2SV_EndBug> <S2SV_StartBug> ret = copy_to_user ( release , buf , len ) ; <S2SV_EndBug> } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * release , size_t <S2SV_ModEnd> len ) { <S2SV_ModStart> ret = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> UNAME26 ) { const <S2SV_ModStart> rest = UTS_RELEASE ; char buf [ 65 ] = { 0 } <S2SV_ModStart> ; unsigned v ; size_t copy <S2SV_ModStart> + 40 ; copy = min ( sizeof ( buf ) , max_t ( size_t , 1 , len ) ) ; copy = scnprintf <S2SV_ModEnd> ( buf , <S2SV_ModStart> ( buf , copy <S2SV_ModEnd> , \"2.6.%u%s\" , <S2SV_ModStart> , buf , copy + 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9888\n\n```\nCWE-264 static void * arm_coherent_dma_alloc ( struct device * dev , size_t size , dma_addr_t * handle , gfp_t gfp , struct dma_attrs * attrs ) { <S2SV_StartBug> pgprot_t prot = __get_dma_pgprot ( attrs , pgprot_kernel ) ; <S2SV_EndBug> void * memory ; if ( dma_alloc_from_coherent ( dev , size , handle , & memory ) ) return memory ; return __dma_alloc ( dev , size , handle , gfp , prot , true , __builtin_return_address ( 0 ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( attrs , PAGE_KERNEL <S2SV_ModEnd> ) ; void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3400\n\n```\nCWE-200 static int get_linux_shareopts ( const char * shareopts , char * * plinux_opts ) { int rc ; assert ( plinux_opts != NULL ) ; * plinux_opts = NULL ; ( void ) add_linux_shareopt ( plinux_opts , \"no_subtree_check\" , NULL ) ; ( void ) add_linux_shareopt ( plinux_opts , \"no_root_squash\" , NULL ) ; ( void ) add_linux_shareopt ( plinux_opts , \"mountpoint\" , NULL ) ; <S2SV_StartBug> rc = foreach_nfs_shareopt ( shareopts , get_linux_shareopts_cb , <S2SV_EndBug> plinux_opts ) ; if ( rc != SA_OK ) { free ( * plinux_opts ) ; * plinux_opts = NULL ; } return ( rc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; rc = foreach_shareopt <S2SV_ModEnd> ( shareopts ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7012\n\n```\nCWE-119 static int get_siz ( Jpeg2000DecoderContext * s ) { int i ; int ncomponents ; uint32_t log2_chroma_wh = 0 ; const enum AVPixelFormat * possible_fmts = NULL ; int possible_fmts_nb = 0 ; if ( bytestream2_get_bytes_left ( & s -> g ) < 36 ) return AVERROR_INVALIDDATA ; s -> avctx -> profile = bytestream2_get_be16u ( & s -> g ) ; s -> width = bytestream2_get_be32u ( & s -> g ) ; s -> height = bytestream2_get_be32u ( & s -> g ) ; s -> image_offset_x = bytestream2_get_be32u ( & s -> g ) ; s -> image_offset_y = bytestream2_get_be32u ( & s -> g ) ; s -> tile_width = bytestream2_get_be32u ( & s -> g ) ; s -> tile_height = bytestream2_get_be32u ( & s -> g ) ; s -> tile_offset_x = bytestream2_get_be32u ( & s -> g ) ; s -> tile_offset_y = bytestream2_get_be32u ( & s -> g ) ; <S2SV_StartBug> ncomponents = bytestream2_get_be16u ( & s -> g ) ; <S2SV_EndBug> if ( ncomponents <= 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components:<S2SV_blank>%d\\\\n\" , s -> ncomponents ) ; return AVERROR_INVALIDDATA ; } if ( ncomponents > 4 ) { avpriv_request_sample ( s -> avctx , \"Support<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>components\" , s -> ncomponents ) ; return AVERROR_PATCHWELCOME ; } s -> ncomponents = ncomponents ; if ( s -> tile_width <= 0 || s -> tile_height <= 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>tile<S2SV_blank>dimension<S2SV_blank>%dx%d.\\\\n\" , s -> tile_width , s -> tile_height ) ; return AVERROR_INVALIDDATA ; } if ( bytestream2_get_bytes_left ( & s -> g ) < 3 * s -> ncomponents ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < s -> ncomponents ; i ++ ) { uint8_t x = bytestream2_get_byteu ( & s -> g ) ; s -> cbps [ i ] = ( x & 0x7f ) + 1 ; s -> precision = FFMAX ( s -> cbps [ i ] , s -> precision ) ; s -> sgnd [ i ] = ! ! ( x & 0x80 ) ; s -> cdx [ i ] = bytestream2_get_byteu ( & s -> g ) ; s -> cdy [ i ] = bytestream2_get_byteu ( & s -> g ) ; if ( ! s -> cdx [ i ] || s -> cdx [ i ] == 3 || s -> cdx [ i ] > 4 || ! s -> cdy [ i ] || s -> cdy [ i ] == 3 || s -> cdy [ i ] > 4 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>sample<S2SV_blank>separation<S2SV_blank>%d/%d\\\\n\" , s -> cdx [ i ] , s -> cdy [ i ] ) ; return AVERROR_INVALIDDATA ; } log2_chroma_wh |= s -> cdy [ i ] >> 1 << i * 4 | s -> cdx [ i ] >> 1 << i * 4 + 2 ; } s -> numXtiles = ff_jpeg2000_ceildiv ( s -> width - s -> tile_offset_x , s -> tile_width ) ; s -> numYtiles = ff_jpeg2000_ceildiv ( s -> height - s -> tile_offset_y , s -> tile_height ) ; if ( s -> numXtiles * ( uint64_t ) s -> numYtiles > INT_MAX / sizeof ( * s -> tile ) ) { s -> numXtiles = s -> numYtiles = 0 ; return AVERROR ( EINVAL ) ; } s -> tile = av_mallocz_array ( s -> numXtiles * s -> numYtiles , sizeof ( * s -> tile ) ) ; if ( ! s -> tile ) { s -> numXtiles = s -> numYtiles = 0 ; return AVERROR ( ENOMEM ) ; } for ( i = 0 ; i < s -> numXtiles * s -> numYtiles ; i ++ ) { Jpeg2000Tile * tile = s -> tile + i ; tile -> comp = av_mallocz ( s -> ncomponents * sizeof ( * tile -> comp ) ) ; if ( ! tile -> comp ) return AVERROR ( ENOMEM ) ; } s -> avctx -> width = ff_jpeg2000_ceildivpow2 ( s -> width - s -> image_offset_x , s -> reduction_factor ) ; s -> avctx -> height = ff_jpeg2000_ceildivpow2 ( s -> height - s -> image_offset_y , s -> reduction_factor ) ; if ( s -> avctx -> profile == FF_PROFILE_JPEG2000_DCINEMA_2K || s -> avctx -> profile == FF_PROFILE_JPEG2000_DCINEMA_4K ) { possible_fmts = xyz_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( xyz_pix_fmts ) ; } else { switch ( s -> colour_space ) { case 16 : possible_fmts = rgb_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( rgb_pix_fmts ) ; break ; case 17 : possible_fmts = gray_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( gray_pix_fmts ) ; break ; case 18 : possible_fmts = yuv_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( yuv_pix_fmts ) ; break ; default : possible_fmts = all_pix_fmts ; possible_fmts_nb = FF_ARRAY_ELEMS ( all_pix_fmts ) ; break ; } } for ( i = 0 ; i < possible_fmts_nb ; ++ i ) { if ( pix_fmt_match ( possible_fmts [ i ] , ncomponents , s -> precision , log2_chroma_wh , s -> pal8 ) ) { s -> avctx -> pix_fmt = possible_fmts [ i ] ; break ; } } if ( s -> avctx -> pix_fmt == AV_PIX_FMT_NONE ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>pix_fmt,<S2SV_blank>profile:<S2SV_blank>%d,<S2SV_blank>colour_space:<S2SV_blank>%d,<S2SV_blank>\" \"components:<S2SV_blank>%d,<S2SV_blank>precision:<S2SV_blank>%d,<S2SV_blank>\" \"cdx[1]:<S2SV_blank>%d,<S2SV_blank>cdy[1]:<S2SV_blank>%d,<S2SV_blank>cdx[2]:<S2SV_blank>%d,<S2SV_blank>cdy[2]:<S2SV_blank>%d\\\\n\" , s -> avctx -> profile , s -> colour_space , ncomponents , s -> precision , ncomponents > 2 ? s -> cdx [ 1 ] : 0 , ncomponents > 2 ? s -> cdy [ 1 ] : 0 , ncomponents > 2 ? s -> cdx [ 2 ] : 0 , ncomponents > 2 ? s -> cdy [ 2 ] : 0 ) ; } s -> avctx -> bits_per_raw_sample = s -> precision ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> g ) ; if ( s -> image_offset_x || s -> image_offset_y ) { avpriv_request_sample ( s -> avctx , \"Support<S2SV_blank>for<S2SV_blank>image<S2SV_blank>offsets\" ) ; return AVERROR_PATCHWELCOME ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 void mpls_print ( netdissect_options * ndo , const u_char * bp , u_int length ) { const u_char * p ; uint32_t label_entry ; uint16_t label_stack_depth = 0 ; enum mpls_packet_type pt = PT_UNKNOWN ; p = bp ; ND_PRINT ( ( ndo , \"MPLS\" ) ) ; do { ND_TCHECK2 ( * p , sizeof ( label_entry ) ) ; if ( length < sizeof ( label_entry ) ) { ND_PRINT ( ( ndo , \"[|MPLS],<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; } label_entry = EXTRACT_32BITS ( p ) ; ND_PRINT ( ( ndo , \"%s(label<S2SV_blank>%u\" , ( label_stack_depth && ndo -> ndo_vflag ) ? \"\\\\n\\\\t\" : \"<S2SV_blank>\" , MPLS_LABEL ( label_entry ) ) ) ; label_stack_depth ++ ; if ( ndo -> ndo_vflag && MPLS_LABEL ( label_entry ) < sizeof ( mpls_labelname ) / sizeof ( mpls_labelname [ 0 ] ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , mpls_labelname [ MPLS_LABEL ( label_entry ) ] ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>exp<S2SV_blank>%u\" , MPLS_EXP ( label_entry ) ) ) ; if ( MPLS_STACK ( label_entry ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>[S]\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>ttl<S2SV_blank>%u)\" , MPLS_TTL ( label_entry ) ) ) ; p += sizeof ( label_entry ) ; length -= sizeof ( label_entry ) ; } while ( ! MPLS_STACK ( label_entry ) ) ; switch ( MPLS_LABEL ( label_entry ) ) { case 0 : case 3 : pt = PT_IPV4 ; break ; case 2 : pt = PT_IPV6 ; break ; default : ND_TCHECK ( * p ) ; if ( length < 1 ) { return ; } switch ( * p ) { case 0x45 : case 0x46 : case 0x47 : case 0x48 : case 0x49 : case 0x4a : case 0x4b : case 0x4c : case 0x4d : case 0x4e : case 0x4f : pt = PT_IPV4 ; break ; case 0x60 : case 0x61 : case 0x62 : case 0x63 : case 0x64 : case 0x65 : case 0x66 : case 0x67 : case 0x68 : case 0x69 : case 0x6a : case 0x6b : case 0x6c : case 0x6d : case 0x6e : case 0x6f : pt = PT_IPV6 ; break ; case 0x81 : case 0x82 : case 0x83 : pt = PT_OSI ; break ; default : break ; } } if ( pt == PT_UNKNOWN ) { if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , length ) ; return ; } ND_PRINT ( ( ndo , ndo -> ndo_vflag ? \"\\\\n\\\\t\" : \"<S2SV_blank>\" ) ) ; switch ( pt ) { case PT_IPV4 : ip_print ( ndo , p , length ) ; break ; case PT_IPV6 : ip6_print ( ndo , p , length ) ; break ; case PT_OSI : <S2SV_StartBug> isoclns_print ( ndo , p , length , length ) ; <S2SV_EndBug> break ; default : break ; } return ; trunc : ND_PRINT ( ( ndo , \"[|MPLS]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15296\n\n```\nCWE-119 static uint8_t excluded_channels ( bitfile * ld , drc_info * drc ) { uint8_t i , n = 0 ; uint8_t num_excl_chan = 7 ; for ( i = 0 ; i < 7 ; i ++ ) { drc -> exclude_mask [ i ] = faad_get1bit ( ld DEBUGVAR ( 1 , 103 , \"excluded_channels():<S2SV_blank>exclude_mask\" ) ) ; } n ++ ; while ( ( drc -> additional_excluded_chns [ n - 1 ] = faad_get1bit ( ld DEBUGVAR ( 1 , 104 , \"excluded_channels():<S2SV_blank>additional_excluded_chns\" ) ) ) == 1 ) { <S2SV_StartBug> for ( i = num_excl_chan ; i < num_excl_chan + 7 ; i ++ ) <S2SV_EndBug> { drc -> exclude_mask [ i ] = faad_get1bit ( ld DEBUGVAR ( 1 , 105 , \"excluded_channels():<S2SV_blank>exclude_mask\" ) ) ; } n ++ ; num_excl_chan += 7 ; } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) { if ( i >= MAX_CHANNELS - num_excl_chan - 7 ) return n ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31257\n\n```\nCWE-476 GF_Err HintFile ( GF_ISOFile * file , u32 MTUSize , u32 max_ptime , u32 rtp_rate , u32 base_flags , Bool copy_data , Bool interleave , Bool regular_iod , Bool single_group , Bool hint_no_offset ) { GF_ESD * esd ; GF_InitialObjectDescriptor * iod ; u32 i , val , res , streamType ; u32 sl_mode , prev_ocr , single_ocr , nb_done , tot_bw , bw , flags , spec_type ; GF_Err e ; char szPayload [ 30 ] ; GF_RTPHinter * hinter ; Bool copy , has_iod , single_av ; u8 init_payt = BASE_PAYT ; u32 mtype ; GF_SDP_IODProfile iod_mode = GF_SDP_IOD_NONE ; u32 media_group = 0 ; u8 media_prio = 0 ; tot_bw = 0 ; prev_ocr = 0 ; single_ocr = 1 ; has_iod = 1 ; iod = ( GF_InitialObjectDescriptor * ) gf_isom_get_root_od ( file ) ; if ( ! iod ) has_iod = 0 ; else { if ( ! gf_list_count ( iod -> ESDescriptors ) ) has_iod = 0 ; gf_odf_desc_del ( ( GF_Descriptor * ) iod ) ; } spec_type = gf_isom_guess_specification ( file ) ; single_av = single_group ? 1 : gf_isom_is_single_av ( file ) ; for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { res = gf_isom_get_media_type ( file , i + 1 ) ; if ( ( res == GF_ISOM_MEDIA_SCENE ) || ( res == GF_ISOM_MEDIA_OD ) ) { if ( gf_isom_is_track_in_root_od ( file , i + 1 ) ) { gf_isom_set_default_sync_track ( file , i + 1 ) ; break ; } } } nb_done = 0 ; for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { sl_mode = base_flags ; copy = copy_data ; if ( ! gf_isom_get_sample_count ( file , i + 1 ) ) continue ; if ( ! gf_isom_is_track_enabled ( file , i + 1 ) ) { M4_LOG ( GF_LOG_INFO , ( \"Track<S2SV_blank>ID<S2SV_blank>%d<S2SV_blank>disabled<S2SV_blank>-<S2SV_blank>skipping<S2SV_blank>hint\\\\n\" , gf_isom_get_track_id ( file , i + 1 ) ) ) ; continue ; } mtype = gf_isom_get_media_type ( file , i + 1 ) ; switch ( mtype ) { case GF_ISOM_MEDIA_VISUAL : if ( single_av ) { media_group = 2 ; media_prio = 2 ; } break ; case GF_ISOM_MEDIA_AUXV : if ( single_av ) { media_group = 2 ; media_prio = 3 ; } break ; case GF_ISOM_MEDIA_PICT : if ( single_av ) { media_group = 2 ; media_prio = 4 ; } break ; case GF_ISOM_MEDIA_AUDIO : if ( single_av ) { media_group = 2 ; media_prio = 1 ; } break ; case GF_ISOM_MEDIA_HINT : continue ; default : if ( spec_type == GF_ISOM_BRAND_ISMA ) continue ; } mtype = gf_isom_get_media_subtype ( file , i + 1 , 1 ) ; if ( ( mtype == GF_ISOM_SUBTYPE_MPEG4 ) || ( mtype == GF_ISOM_SUBTYPE_MPEG4_CRYP ) ) mtype = gf_isom_get_mpeg4_subtype ( file , i + 1 , 1 ) ; if ( ! single_av ) { media_group ++ ; media_prio = 1 ; } streamType = 0 ; esd = gf_isom_get_esd ( file , i + 1 , 1 ) ; <S2SV_StartBug> if ( esd ) { <S2SV_EndBug> streamType = esd -> decoderConfig -> streamType ; if ( ! prev_ocr ) { prev_ocr = esd -> OCRESID ; if ( ! esd -> OCRESID ) prev_ocr = esd -> ESID ; } else if ( esd -> OCRESID && prev_ocr != esd -> OCRESID ) { single_ocr = 0 ; } if ( streamType == 1 ) copy = 1 ; } gf_odf_desc_del ( ( GF_Descriptor * ) esd ) ; if ( ! regular_iod && gf_isom_is_track_in_root_od ( file , i + 1 ) ) { if ( gf_isom_get_sample_count ( file , i + 1 ) == 1 ) { GF_ISOSample * samp = gf_isom_get_sample ( file , i + 1 , 1 , & val ) ; if ( streamType ) { res = gf_hinter_can_embbed_data ( samp -> data , samp -> dataLength , streamType ) ; } else { res = 0 ; } if ( samp ) gf_isom_sample_del ( & samp ) ; if ( res ) continue ; } } if ( interleave ) sl_mode |= GP_RTP_PCK_USE_INTERLEAVING ; hinter = gf_hinter_track_new ( file , i + 1 , MTUSize , max_ptime , rtp_rate , sl_mode , init_payt , copy , media_group , media_prio , & e ) ; if ( ! hinter ) { if ( e ) { M4_LOG ( nb_done ? GF_LOG_WARNING : GF_LOG_ERROR , ( \"Cannot<S2SV_blank>create<S2SV_blank>hinter<S2SV_blank>(%s)\\\\n\" , gf_error_to_string ( e ) ) ) ; if ( ! nb_done ) return e ; } continue ; } if ( hint_no_offset ) gf_hinter_track_force_no_offsets ( hinter ) ; bw = gf_hinter_track_get_bandwidth ( hinter ) ; tot_bw += bw ; flags = gf_hinter_track_get_flags ( hinter ) ; gf_isom_set_nalu_extract_mode ( file , i + 1 , GF_ISOM_NALU_EXTRACT_LAYER_ONLY ) ; gf_hinter_track_get_payload_name ( hinter , szPayload ) ; M4_LOG ( GF_LOG_INFO , ( \"Hinting<S2SV_blank>track<S2SV_blank>ID<S2SV_blank>%d<S2SV_blank>-<S2SV_blank>Type<S2SV_blank>\\\\\"%s:%s\\\\\"<S2SV_blank>(%s)<S2SV_blank>-<S2SV_blank>BW<S2SV_blank>%d<S2SV_blank>kbps\\\\n\" , gf_isom_get_track_id ( file , i + 1 ) , gf_4cc_to_str ( mtype ) , gf_4cc_to_str ( mtype ) , szPayload , bw ) ) ; if ( flags & GP_RTP_PCK_SYSTEMS_CAROUSEL ) M4_LOG ( GF_LOG_INFO , ( \"\\\\tMPEG-4<S2SV_blank>Systems<S2SV_blank>stream<S2SV_blank>carousel<S2SV_blank>enabled\\\\n\" ) ) ; e = gf_hinter_track_process ( hinter ) ; if ( ! e ) e = gf_hinter_track_finalize ( hinter , has_iod ) ; gf_hinter_track_del ( hinter ) ; if ( e ) { M4_LOG ( GF_LOG_ERROR , ( \"Error<S2SV_blank>while<S2SV_blank>hinting<S2SV_blank>(%s)\\\\n\" , gf_error_to_string ( e ) ) ) ; if ( ! nb_done ) return e ; } init_payt ++ ; nb_done ++ ; } if ( has_iod ) { iod_mode = GF_SDP_IOD_ISMA ; if ( regular_iod ) iod_mode = GF_SDP_IOD_REGULAR ; } else { iod_mode = GF_SDP_IOD_NONE ; } gf_hinter_finalize ( file , iod_mode , tot_bw ) ; if ( ! single_ocr ) M4_LOG ( GF_LOG_WARNING , ( \"Warning:<S2SV_blank>at<S2SV_blank>least<S2SV_blank>2<S2SV_blank>timelines<S2SV_blank>found<S2SV_blank>in<S2SV_blank>the<S2SV_blank>file\\\\nThis<S2SV_blank>may<S2SV_blank>not<S2SV_blank>be<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>servers/players\\\\n\\\\n\" ) ) ; return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( esd && esd -> decoderConfig\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27675\n\n```\nCWE-362 static void __xen_evtchn_do_upcall ( void ) { struct vcpu_info * vcpu_info = __this_cpu_read ( xen_vcpu ) ; <S2SV_StartBug> int cpu = smp_processor_id ( ) ; <S2SV_EndBug> do { vcpu_info -> evtchn_upcall_pending = 0 ; xen_evtchn_handle_events ( cpu ) ; BUG_ON ( ! irqs_disabled ( ) ) ; virt_rmb ( ) ; } while ( vcpu_info -> evtchn_upcall_pending ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = smp_processor_id ( ) ; read_lock ( & evtchn_rwlock <S2SV_ModStart> evtchn_upcall_pending ) ; read_unlock ( & evtchn_rwlock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14363\n\n```\nCWE-22 static int pop_sync_mailbox ( struct Context * ctx , int * index_hint ) { int i , j , ret = 0 ; char buf [ LONG_STRING ] ; struct PopData * pop_data = ( struct PopData * ) ctx -> data ; struct Progress progress ; # ifdef USE_HCACHE header_cache_t * hc = NULL ; # endif pop_data -> check_time = 0 ; while ( true ) { if ( pop_reconnect ( ctx ) < 0 ) return - 1 ; mutt_progress_init ( & progress , _ ( \"Marking<S2SV_blank>messages<S2SV_blank>deleted...\" ) , MUTT_PROGRESS_MSG , WriteInc , ctx -> deleted ) ; # ifdef USE_HCACHE hc = pop_hcache_open ( pop_data , ctx -> path ) ; # endif for ( i = 0 , j = 0 , ret = 0 ; ret == 0 && i < ctx -> msgcount ; i ++ ) { if ( ctx -> hdrs [ i ] -> deleted && ctx -> hdrs [ i ] -> refno != - 1 ) { j ++ ; if ( ! ctx -> quiet ) mutt_progress_update ( & progress , j , - 1 ) ; snprintf ( buf , sizeof ( buf ) , \"DELE<S2SV_blank>%d\\\\r\\\\n\" , ctx -> hdrs [ i ] -> refno ) ; ret = pop_query ( pop_data , buf , sizeof ( buf ) ) ; if ( ret == 0 ) { <S2SV_StartBug> mutt_bcache_del ( pop_data -> bcache , ctx -> hdrs [ i ] -> data ) ; <S2SV_EndBug> # ifdef USE_HCACHE mutt_hcache_delete ( hc , ctx -> hdrs [ i ] -> data , strlen ( ctx -> hdrs [ i ] -> data ) ) ; # endif } } # ifdef USE_HCACHE if ( ctx -> hdrs [ i ] -> changed ) { mutt_hcache_store ( hc , ctx -> hdrs [ i ] -> data , strlen ( ctx -> hdrs [ i ] -> data ) , ctx -> hdrs [ i ] , 0 ) ; } # endif } # ifdef USE_HCACHE mutt_hcache_close ( hc ) ; # endif if ( ret == 0 ) { mutt_str_strfcpy ( buf , \"QUIT\\\\r\\\\n\" , sizeof ( buf ) ) ; ret = pop_query ( pop_data , buf , sizeof ( buf ) ) ; } if ( ret == 0 ) { pop_data -> clear_cache = true ; pop_clear_cache ( pop_data ) ; pop_data -> status = POP_DISCONNECTED ; return 0 ; } if ( ret == - 2 ) { mutt_error ( \"%s\" , pop_data -> err_msg ) ; return - 1 ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> bcache , cache_id ( <S2SV_ModStart> ] -> data )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3212\n\n```\nCWE-362 static int sctp_setsockopt_auto_asconf ( struct sock * sk , char __user * optval , unsigned int optlen ) { int val ; struct sctp_sock * sp = sctp_sk ( sk ) ; if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; if ( ! sctp_is_ep_boundall ( sk ) && val ) return - EINVAL ; if ( ( val && sp -> do_auto_asconf ) || ( ! val && ! sp -> do_auto_asconf ) ) return 0 ; <S2SV_StartBug> if ( val == 0 && sp -> do_auto_asconf ) { <S2SV_EndBug> list_del ( & sp -> auto_asconf_list ) ; sp -> do_auto_asconf = 0 ; } else if ( val && ! sp -> do_auto_asconf ) { list_add_tail ( & sp -> auto_asconf_list , & sock_net ( sk ) -> sctp . auto_asconf_splist ) ; sp -> do_auto_asconf = 1 ; } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; spin_lock_bh ( & sock_net ( sk ) -> sctp . addr_wq_lock ) ; <S2SV_ModStart> 1 ; } spin_unlock_bh ( & sock_net ( sk ) -> sctp . addr_wq_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6413\n\n```\nCWE-287 int oidc_oauth_check_userid ( request_rec * r , oidc_cfg * c ) { if ( ! ap_is_initial_req ( r ) ) { if ( r -> main != NULL ) r -> user = r -> main -> user ; else if ( r -> prev != NULL ) r -> user = r -> prev -> user ; if ( r -> user != NULL ) { oidc_debug ( r , \"recycling<S2SV_blank>user<S2SV_blank>\\'%s\\'<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>request<S2SV_blank>for<S2SV_blank>sub-request\" , r -> user ) ; return OK ; } } else if ( ( c -> redirect_uri != NULL ) && ( oidc_util_request_matches_url ( r , c -> redirect_uri ) ) ) { if ( oidc_util_request_has_parameter ( r , \"jwks\" ) ) { return oidc_handle_jwks ( r , c ) ; } } const char * access_token = NULL ; if ( oidc_oauth_get_bearer_token ( r , & access_token ) == FALSE ) return oidc_oauth_return_www_authenticate ( r , \"invalid_request\" , \"No<S2SV_blank>bearer<S2SV_blank>token<S2SV_blank>found<S2SV_blank>in<S2SV_blank>the<S2SV_blank>request\" ) ; json_t * token = NULL ; char * s_token = NULL ; if ( c -> oauth . introspection_endpoint_url != NULL ) { if ( oidc_oauth_resolve_access_token ( r , c , access_token , & token , & s_token ) == FALSE ) return oidc_oauth_return_www_authenticate ( r , \"invalid_token\" , \"Reference<S2SV_blank>token<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>introspected\" ) ; } else { if ( oidc_oauth_validate_jwt_access_token ( r , c , access_token , & token , & s_token ) == FALSE ) return oidc_oauth_return_www_authenticate ( r , \"invalid_token\" , \"JWT<S2SV_blank>token<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>validated\" ) ; } if ( token == NULL ) { oidc_error ( r , \"could<S2SV_blank>not<S2SV_blank>resolve<S2SV_blank>claims<S2SV_blank>(token<S2SV_blank>==<S2SV_blank>NULL)\" ) ; return oidc_oauth_return_www_authenticate ( r , \"invalid_token\" , \"No<S2SV_blank>claims<S2SV_blank>could<S2SV_blank>be<S2SV_blank>parsed<S2SV_blank>from<S2SV_blank>the<S2SV_blank>token\" ) ; } oidc_request_state_set ( r , OIDC_CLAIMS_SESSION_KEY , ( const char * ) s_token ) ; if ( oidc_oauth_set_remote_user ( r , c , token ) == FALSE ) { oidc_error ( r , \"remote<S2SV_blank>user<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>set,<S2SV_blank>aborting<S2SV_blank>with<S2SV_blank>HTTP_UNAUTHORIZED\" ) ; return oidc_oauth_return_www_authenticate ( r , \"invalid_token\" , \"Could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>remote<S2SV_blank>user\" ) ; } <S2SV_StartBug> char * authn_header = oidc_cfg_dir_authn_header ( r ) ; <S2SV_EndBug> int pass_headers = oidc_cfg_dir_pass_info_in_headers ( r ) ; int pass_envvars = oidc_cfg_dir_pass_info_in_envvars ( r ) ; if ( ( r -> user != NULL ) && ( authn_header != NULL ) ) { oidc_debug ( r , \"setting<S2SV_blank>authn<S2SV_blank>header<S2SV_blank>(%s)<S2SV_blank>to:<S2SV_blank>%s\" , authn_header , r -> user ) ; apr_table_set ( r -> headers_in , authn_header , r -> user ) ; } oidc_util_set_app_infos ( r , token , c -> claim_prefix , c -> claim_delimiter , pass_headers , pass_envvars ) ; if ( access_token != NULL ) { oidc_util_set_app_info ( r , \"access_token\" , access_token , OIDC_DEFAULT_HEADER_PREFIX , pass_headers , pass_envvars ) ; } json_decref ( token ) ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } oidc_scrub_headers ( r ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 static bool caller_is_in_ancestor ( pid_t pid , const char * contrl , const char * cg , char * * nextcg ) { <S2SV_StartBug> char fnam [ PROCLEN ] ; <S2SV_EndBug> FILE * f ; bool answer = false ; <S2SV_StartBug> char * line = NULL ; <S2SV_EndBug> size_t len = 0 ; int ret ; ret = snprintf ( fnam , PROCLEN , \"/proc/%d/cgroup\" , pid ) ; if ( ret < 0 || ret >= PROCLEN ) return false ; if ( ! ( f = fopen ( fnam , \"r\" ) ) ) return false ; while ( getline ( & line , & len , f ) != - 1 ) { char * c1 , * c2 , * linecmp ; if ( ! line [ 0 ] ) continue ; c1 = strchr ( line , ':' ) ; if ( ! c1 ) goto out ; c1 ++ ; c2 = strchr ( c1 , ':' ) ; if ( ! c2 ) <S2SV_StartBug> goto out ; <S2SV_EndBug> * c2 = '\\\\0' ; if ( strcmp ( c1 , contrl ) != 0 ) continue ; c2 ++ ; stripnewline ( c2 ) ; prune_init_slice ( c2 ) ; linecmp = * cg == '/' ? c2 : c2 + 1 ; if ( strncmp ( linecmp , cg , strlen ( linecmp ) ) != 0 ) { <S2SV_StartBug> if ( nextcg ) <S2SV_EndBug> * nextcg = get_next_cgroup_dir ( linecmp , cg ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } answer = true ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } out : fclose ( f ) ; free ( line ) ; return answer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nextcg ) { <S2SV_ModEnd> bool answer = <S2SV_ModStart> ; char * c2 = get_pid_cgroup ( pid , contrl ) ; char * linecmp <S2SV_ModEnd> ; if ( <S2SV_ModStart> ! c2 ) return false <S2SV_ModEnd> ; prune_init_slice ( <S2SV_ModStart> ( nextcg ) { <S2SV_ModStart> cg ) ; } <S2SV_ModStart> = true ; out : free ( c2 <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10030\n\n```\nCWE-284 static void _prolog_error ( batch_job_launch_msg_t * req , int rc ) { char * err_name_ptr , err_name [ 256 ] , path_name [ MAXPATHLEN ] ; char * fmt_char ; int fd ; if ( req -> std_err || req -> std_out ) { if ( req -> std_err ) strncpy ( err_name , req -> std_err , sizeof ( err_name ) ) ; else strncpy ( err_name , req -> std_out , sizeof ( err_name ) ) ; if ( ( fmt_char = strchr ( err_name , ( int ) '%' ) ) && ( fmt_char [ 1 ] == 'j' ) && ! strchr ( fmt_char + 1 , ( int ) '%' ) ) { char tmp_name [ 256 ] ; fmt_char [ 1 ] = 'u' ; snprintf ( tmp_name , sizeof ( tmp_name ) , err_name , req -> job_id ) ; strncpy ( err_name , tmp_name , sizeof ( err_name ) ) ; } } else { snprintf ( err_name , sizeof ( err_name ) , \"slurm-%u.out\" , req -> job_id ) ; } err_name_ptr = err_name ; if ( err_name_ptr [ 0 ] == '/' ) snprintf ( path_name , MAXPATHLEN , \"%s\" , err_name_ptr ) ; else if ( req -> work_dir ) snprintf ( path_name , MAXPATHLEN , \"%s/%s\" , req -> work_dir , err_name_ptr ) ; else snprintf ( path_name , MAXPATHLEN , \"/%s\" , err_name_ptr ) ; <S2SV_StartBug> if ( ( fd = open ( path_name , ( O_CREAT | O_APPEND | O_WRONLY ) , 0644 ) ) == - 1 ) { <S2SV_EndBug> <S2SV_StartBug> error ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s:<S2SV_blank>%s\" , path_name , <S2SV_EndBug> slurm_strerror ( errno ) ) ; return ; } snprintf ( err_name , sizeof ( err_name ) , \"Error<S2SV_blank>running<S2SV_blank>slurm<S2SV_blank>prolog:<S2SV_blank>%d\\\\n\" , WEXITSTATUS ( rc ) ) ; safe_write ( fd , err_name , strlen ( err_name ) ) ; if ( fchown ( fd , ( uid_t ) req -> uid , ( gid_t ) req -> gid ) == - 1 ) { snprintf ( err_name , sizeof ( err_name ) , \"Couldn\\'t<S2SV_blank>change<S2SV_blank>fd<S2SV_blank>owner<S2SV_blank>to<S2SV_blank>%u:%u:<S2SV_blank>%m\\\\n\" , req -> uid , req -> gid ) ; } rwfail : close ( fd ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( fd = _open_as_other ( path_name , req <S2SV_ModEnd> ) ) == <S2SV_ModStart> { error ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s:<S2SV_blank>Permission<S2SV_blank>denied\" , path_name <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010298\n\n```\nCWE-119 TEE_Result syscall_asymm_verify ( unsigned long state , const struct utee_attribute * usr_params , size_t num_params , const void * data , size_t data_len , const void * sig , size_t sig_len ) { TEE_Result res ; struct tee_cryp_state * cs ; struct tee_ta_session * sess ; struct tee_obj * o ; size_t hash_size ; int salt_len = 0 ; TEE_Attribute * params = NULL ; uint32_t hash_algo ; struct user_ta_ctx * utc ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; utc = to_user_ta_ctx ( sess -> ctx ) ; res = tee_svc_cryp_get_state ( sess , tee_svc_uref_to_vaddr ( state ) , & cs ) ; if ( res != TEE_SUCCESS ) return res ; if ( cs -> mode != TEE_MODE_VERIFY ) return TEE_ERROR_BAD_PARAMETERS ; res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) data , data_len ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) sig , sig_len ) ; if ( res != TEE_SUCCESS ) return res ; <S2SV_StartBug> params = malloc ( sizeof ( TEE_Attribute ) * num_params ) ; <S2SV_EndBug> if ( ! params ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( utc , usr_params , num_params , params ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_obj_get ( utc , cs -> key1 , & o ) ; if ( res != TEE_SUCCESS ) goto out ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_INITIALIZED ) == 0 ) { res = TEE_ERROR_BAD_PARAMETERS ; goto out ; } switch ( TEE_ALG_GET_MAIN_ALG ( cs -> algo ) ) { case TEE_MAIN_ALGO_RSA : if ( cs -> algo != TEE_ALG_RSASSA_PKCS1_V1_5 ) { hash_algo = TEE_DIGEST_HASH_TO_ALGO ( cs -> algo ) ; res = tee_hash_get_digest_size ( hash_algo , & hash_size ) ; if ( res != TEE_SUCCESS ) break ; if ( data_len != hash_size ) { res = TEE_ERROR_BAD_PARAMETERS ; break ; } salt_len = pkcs1_get_salt_len ( params , num_params , hash_size ) ; } res = crypto_acipher_rsassa_verify ( cs -> algo , o -> attr , salt_len , data , data_len , sig , sig_len ) ; break ; case TEE_MAIN_ALGO_DSA : hash_algo = TEE_DIGEST_HASH_TO_ALGO ( cs -> algo ) ; res = tee_hash_get_digest_size ( hash_algo , & hash_size ) ; if ( res != TEE_SUCCESS ) break ; if ( data_len > hash_size ) { res = TEE_ERROR_BAD_PARAMETERS ; break ; } res = crypto_acipher_dsa_verify ( cs -> algo , o -> attr , data , data_len , sig , sig_len ) ; break ; case TEE_MAIN_ALGO_ECDSA : res = crypto_acipher_ecc_verify ( cs -> algo , o -> attr , data , data_len , sig , sig_len ) ; break ; default : res = TEE_ERROR_NOT_SUPPORTED ; } out : free ( params ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , num_params , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3804\n\n```\nCWE-20 <S2SV_StartBug> static char * <S2SV_EndBug> base64_decode_string ( const char * enc ) { <S2SV_StartBug> if ( enc == NULL ) <S2SV_EndBug> return NULL ; <S2SV_StartBug> char * dec = g_strdup ( enc ) ; <S2SV_EndBug> gsize len ; <S2SV_StartBug> g_base64_decode_inplace ( dec , & len ) ; <S2SV_EndBug> dec [ len ] = '\\\\0' ; return dec ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static gchar <S2SV_ModEnd> * base64_decode_string ( <S2SV_ModStart> enc ) { gchar * dec ; gsize len ; <S2SV_ModStart> return NULL ; dec = ( gchar * ) g_base64_decode ( enc <S2SV_ModEnd> , & len <S2SV_ModStart> len ) ; if ( dec )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-89(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0036\n\n```\nCWE-89 static CURLcode smtp_connect ( struct connectdata * conn , bool * done ) { CURLcode result ; struct smtp_conn * smtpc = & conn -> proto . smtpc ; struct SessionHandle * data = conn -> data ; struct pingpong * pp = & smtpc -> pp ; <S2SV_StartBug> const char * path = conn -> data -> state . path ; <S2SV_EndBug> int len ; char localhost [ HOSTNAME_MAX + 1 ] ; * done = FALSE ; Curl_reset_reqproto ( conn ) ; result = smtp_init ( conn ) ; if ( CURLE_OK != result ) return result ; conn -> bits . close = FALSE ; pp -> response_time = RESP_TIMEOUT ; pp -> statemach_act = smtp_statemach_act ; pp -> endofresp = smtp_endofresp ; pp -> conn = conn ; if ( conn -> bits . tunnel_proxy && conn -> bits . httpproxy ) { struct HTTP http_proxy ; struct FTP * smtp_save ; smtp_save = data -> state . proto . smtp ; memset ( & http_proxy , 0 , sizeof ( http_proxy ) ) ; data -> state . proto . http = & http_proxy ; result = Curl_proxyCONNECT ( conn , FIRSTSOCKET , conn -> host . name , conn -> remote_port ) ; data -> state . proto . smtp = smtp_save ; if ( CURLE_OK != result ) return result ; } if ( ( conn -> handler -> protocol & CURLPROTO_SMTPS ) && data -> state . used_interface != Curl_if_multi ) { result = Curl_ssl_connect ( conn , FIRSTSOCKET ) ; if ( result ) return result ; } Curl_pp_init ( pp ) ; pp -> response_time = RESP_TIMEOUT ; pp -> statemach_act = smtp_statemach_act ; pp -> endofresp = smtp_endofresp ; pp -> conn = conn ; if ( ! * path ) { if ( ! Curl_gethostname ( localhost , sizeof localhost ) ) path = localhost ; else path = \"localhost\" ; } <S2SV_StartBug> smtpc -> domain = curl_easy_unescape ( conn -> data , path , 0 , & len ) ; <S2SV_EndBug> if ( ! smtpc -> domain ) return CURLE_OUT_OF_MEMORY ; state ( conn , SMTP_SERVERGREET ) ; if ( data -> state . used_interface == Curl_if_multi ) result = smtp_multi_statemach ( conn , done ) ; else { result = smtp_easy_statemach ( conn ) ; if ( ! result ) * done = TRUE ; } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> state . path <S2SV_ModEnd> ; char localhost <S2SV_ModStart> \"localhost\" ; } result = Curl_urldecode ( conn -> data , path , 0 , & <S2SV_ModStart> smtpc -> domain , NULL , TRUE ) ; if ( result ) return result <S2SV_ModEnd> ; state (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t rawSocketSendEthPacket ( Socket * socket , const SocketMsg * message , uint_t flags ) { error_t error ; # if ( ETH_SUPPORT == ENABLED ) size_t length ; NetBuffer * buffer ; NetInterface * interface ; <S2SV_StartBug> if ( socket -> interface != NULL ) <S2SV_EndBug> { interface = socket -> interface ; } else { interface = netGetDefaultInterface ( ) ; } interface = nicGetPhysicalInterface ( interface ) ; if ( interface -> nicDriver != NULL && interface -> nicDriver -> type == NIC_TYPE_ETHERNET ) { buffer = netBufferAlloc ( 0 ) ; if ( buffer == NULL ) return ERROR_OUT_OF_MEMORY ; length = message -> length ; error = netBufferAppend ( buffer , message -> data , length ) ; if ( ! error ) { if ( ! interface -> nicDriver -> autoPadding ) { if ( length < ( ETH_MIN_FRAME_SIZE - ETH_CRC_SIZE ) ) { size_t n ; n = ( ETH_MIN_FRAME_SIZE - ETH_CRC_SIZE ) - length ; error = netBufferAppend ( buffer , ethPadding , n ) ; length += n ; } } } if ( ! error ) { if ( ! interface -> nicDriver -> autoCrcCalc ) { uint32_t crc ; crc = ethCalcCrcEx ( buffer , 0 , length ) ; crc = htole32 ( crc ) ; error = netBufferAppend ( buffer , & crc , sizeof ( crc ) ) ; length += sizeof ( crc ) ; } } if ( ! error ) { NetTxAncillary ancillary ; ancillary = NET_DEFAULT_TX_ANCILLARY ; # if ( ETH_PORT_TAGGING_SUPPORT == ENABLED ) ancillary . port = message -> switchPort ; # endif # if ( ETH_TIMESTAMP_SUPPORT == ENABLED ) ancillary . timestampId = message -> timestampId ; # endif TRACE_DEBUG ( \"Sending<S2SV_blank>raw<S2SV_blank>Ethernet<S2SV_blank>frame<S2SV_blank>(%\" PRIuSIZE \"<S2SV_blank>bytes)...\\\\r\\\\n\" , length ) ; error = nicSendPacket ( interface , buffer , 0 , & ancillary ) ; } netBufferFree ( buffer ) ; } else # endif { error = ERROR_INVALID_INTERFACE ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * interface ; if ( message -> interface != NULL ) { interface = message -> interface ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-32055\n\n```\nCWE-125 int mutt_seqset_iterator_next ( struct SeqsetIterator * iter , unsigned int * next ) { if ( ! iter || ! next ) return - 1 ; if ( iter -> in_range ) { if ( ( iter -> down && ( iter -> range_cur == ( iter -> range_end - 1 ) ) ) || ( ! iter -> down && ( iter -> range_cur == ( iter -> range_end + 1 ) ) ) ) { iter -> in_range = 0 ; } } if ( ! iter -> in_range ) { iter -> substr_cur = iter -> substr_end ; if ( iter -> substr_cur == iter -> eostr ) return 1 ; <S2SV_StartBug> while ( ! * ( iter -> substr_cur ) ) <S2SV_EndBug> iter -> substr_cur ++ ; iter -> substr_end = strchr ( iter -> substr_cur , ',' ) ; if ( ! iter -> substr_end ) iter -> substr_end = iter -> eostr ; else * ( iter -> substr_end ) = '\\\\0' ; char * range_sep = strchr ( iter -> substr_cur , ':' ) ; if ( range_sep ) * range_sep ++ = '\\\\0' ; if ( mutt_str_atoui ( iter -> substr_cur , & iter -> range_cur ) != 0 ) return - 1 ; if ( range_sep ) { if ( mutt_str_atoui ( range_sep , & iter -> range_end ) != 0 ) return - 1 ; } else iter -> range_end = iter -> range_cur ; iter -> down = ( iter -> range_end < iter -> range_cur ) ; iter -> in_range = 1 ; } * next = iter -> range_cur ; if ( iter -> down ) iter -> range_cur -- ; else iter -> range_cur ++ ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 1 ; iter -> substr_end = strchr ( iter -> substr_cur , ',' ) ; if ( ! iter -> substr_end ) iter -> substr_end = iter -> eostr ; else * ( iter -> substr_end ++ <S2SV_ModEnd> ) = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13002\n\n```\nCWE-125 static void aodv_extension ( netdissect_options * ndo , const struct aodv_ext * ep , u_int length ) { <S2SV_StartBug> const struct aodv_hello * ah ; <S2SV_EndBug> switch ( ep -> type ) { case AODV_EXT_HELLO : ah = ( const struct aodv_hello * ) ( const void * ) ep ; ND_TCHECK ( * ah ) ; if ( length < sizeof ( struct aodv_hello ) ) <S2SV_StartBug> goto trunc ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\text<S2SV_blank>HELLO<S2SV_blank>%ld<S2SV_blank>ms\" , ( unsigned long ) EXTRACT_32BITS ( & ah -> interval ) ) ) ; break ; default : ND_PRINT ( ( ndo , \"\\\\n\\\\text<S2SV_blank>%u<S2SV_blank>%u\" , ep -> type , ep -> length ) ) ; break ; } return ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|hello]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> aodv_hello * ah ; ND_TCHECK ( * ep ) <S2SV_ModStart> goto trunc ; if ( ep -> length < 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\text<S2SV_blank>HELLO<S2SV_blank>-<S2SV_blank>bad<S2SV_blank>length<S2SV_blank>%u\" , ep -> length ) ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10266\n\n```\nCWE-369 tmsize_t TIFFReadEncodedStrip ( TIFF * tif , uint32 strip , void * buf , tmsize_t size ) { static const char module [ ] = \"TIFFReadEncodedStrip\" ; TIFFDirectory * td = & tif -> tif_dir ; uint32 rowsperstrip ; uint32 stripsperplane ; uint32 stripinplane ; uint16 plane ; uint32 rows ; tmsize_t stripsize ; if ( ! TIFFCheckRead ( tif , 0 ) ) return ( ( tmsize_t ) ( - 1 ) ) ; if ( strip >= td -> td_nstrips ) { TIFFErrorExt ( tif -> tif_clientdata , module , \"%lu:<S2SV_blank>Strip<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range,<S2SV_blank>max<S2SV_blank>%lu\" , ( unsigned long ) strip , ( unsigned long ) td -> td_nstrips ) ; return ( ( tmsize_t ) ( - 1 ) ) ; } rowsperstrip = td -> td_rowsperstrip ; if ( rowsperstrip > td -> td_imagelength ) rowsperstrip = td -> td_imagelength ; <S2SV_StartBug> stripsperplane = ( ( td -> td_imagelength + rowsperstrip - 1 ) / rowsperstrip ) ; <S2SV_EndBug> stripinplane = ( strip % stripsperplane ) ; plane = ( uint16 ) ( strip / stripsperplane ) ; rows = td -> td_imagelength - stripinplane * rowsperstrip ; if ( rows > rowsperstrip ) rows = rowsperstrip ; stripsize = TIFFVStripSize ( tif , rows ) ; if ( stripsize == 0 ) return ( ( tmsize_t ) ( - 1 ) ) ; if ( td -> td_compression == COMPRESSION_NONE && size != ( tmsize_t ) ( - 1 ) && size >= stripsize && ! isMapped ( tif ) && ( ( tif -> tif_flags & TIFF_NOREADRAW ) == 0 ) ) { if ( TIFFReadRawStrip1 ( tif , strip , buf , stripsize , module ) != stripsize ) return ( ( tmsize_t ) ( - 1 ) ) ; if ( ! isFillOrder ( tif , td -> td_fillorder ) && ( tif -> tif_flags & TIFF_NOBITREV ) == 0 ) TIFFReverseBits ( buf , stripsize ) ; ( * tif -> tif_postdecode ) ( tif , buf , stripsize ) ; return ( stripsize ) ; } if ( ( size != ( tmsize_t ) ( - 1 ) ) && ( size < stripsize ) ) stripsize = size ; if ( ! TIFFFillStrip ( tif , strip ) ) return ( ( tmsize_t ) ( - 1 ) ) ; if ( ( * tif -> tif_decodestrip ) ( tif , buf , stripsize , plane ) <= 0 ) return ( ( tmsize_t ) ( - 1 ) ) ; ( * tif -> tif_postdecode ) ( tif , buf , stripsize ) ; return ( stripsize ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; stripsperplane = TIFFhowmany_32_maxuint_compat <S2SV_ModEnd> ( td -> <S2SV_ModStart> td -> td_imagelength , <S2SV_ModEnd> rowsperstrip ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18021\n\n```\nCWE-20 static int set_core_reg ( struct kvm_vcpu * vcpu , const struct kvm_one_reg * reg ) { __u32 __user * uaddr = ( __u32 __user * ) ( unsigned long ) reg -> addr ; struct kvm_regs * regs = vcpu_gp_regs ( vcpu ) ; int nr_regs = sizeof ( * regs ) / sizeof ( __u32 ) ; __uint128_t tmp ; void * valp = & tmp ; u64 off ; int err = 0 ; off = core_reg_offset_from_id ( reg -> id ) ; if ( off >= nr_regs || ( off + ( KVM_REG_SIZE ( reg -> id ) / sizeof ( __u32 ) ) ) >= nr_regs ) return - ENOENT ; <S2SV_StartBug> if ( KVM_REG_SIZE ( reg -> id ) > sizeof ( tmp ) ) <S2SV_EndBug> return - EINVAL ; if ( copy_from_user ( valp , uaddr , KVM_REG_SIZE ( reg -> id ) ) ) { err = - EFAULT ; goto out ; } if ( off == KVM_REG_ARM_CORE_REG ( regs . pstate ) ) { u32 mode = ( * ( u32 * ) valp ) & PSR_AA32_MODE_MASK ; switch ( mode ) { case PSR_AA32_MODE_USR : case PSR_AA32_MODE_FIQ : case PSR_AA32_MODE_IRQ : case PSR_AA32_MODE_SVC : case PSR_AA32_MODE_ABT : case PSR_AA32_MODE_UND : case PSR_MODE_EL0t : case PSR_MODE_EL1t : case PSR_MODE_EL1h : break ; default : err = - EINVAL ; goto out ; } } memcpy ( ( u32 * ) regs + off , valp , KVM_REG_SIZE ( reg -> id ) ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( validate_core_offset ( reg ) ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9114\n\n```\nCWE-77 static void print_value ( int output , int num , const char * devname , const char * value , const char * name , size_t valsz ) { if ( output & OUTPUT_VALUE_ONLY ) { fputs ( value , stdout ) ; fputc ( '\\\\n' , stdout ) ; } else if ( output & OUTPUT_UDEV_LIST ) { print_udev_format ( name , value ) ; } else if ( output & OUTPUT_EXPORT_LIST ) { if ( num == 1 && devname ) printf ( \"DEVNAME=%s\\\\n\" , devname ) ; fputs ( name , stdout ) ; fputs ( \"=\" , stdout ) ; <S2SV_StartBug> safe_print ( value , valsz , NULL ) ; <S2SV_EndBug> fputs ( \"\\\\n\" , stdout ) ; } else { if ( num == 1 && devname ) printf ( \"%s:\" , devname ) ; fputs ( \"<S2SV_blank>\" , stdout ) ; fputs ( name , stdout ) ; fputs ( \"=\\\\\"\" , stdout ) ; <S2SV_StartBug> safe_print ( value , valsz , \"\\\\\"\" ) ; <S2SV_EndBug> fputs ( \"\\\\\"\" , stdout ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , valsz , \"<S2SV_blank>\\\\\\\\\\\\\"\\'$`<>\" <S2SV_ModEnd> ) ; fputs <S2SV_ModStart> , valsz , \"\\\\\"\\\\\\\\\" ) ; fputs ( \"\\\\\"\" <S2SV_ModEnd> , stdout )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-3733\n\n```\nCWE-20 int do_ssl3_write ( SSL * s , int type , const unsigned char * buf , unsigned int * pipelens , unsigned int numpipes , int create_empty_fragment ) { unsigned char * outbuf [ SSL_MAX_PIPELINES ] , * plen [ SSL_MAX_PIPELINES ] ; SSL3_RECORD wr [ SSL_MAX_PIPELINES ] ; int i , mac_size , clear = 0 ; int prefix_len = 0 ; int eivlen ; size_t align = 0 ; SSL3_BUFFER * wb ; SSL_SESSION * sess ; unsigned int totlen = 0 ; unsigned int j ; for ( j = 0 ; j < numpipes ; j ++ ) totlen += pipelens [ j ] ; if ( RECORD_LAYER_write_pending ( & s -> rlayer ) ) return ( ssl3_write_pending ( s , type , buf , totlen ) ) ; if ( s -> s3 -> alert_dispatch ) { i = s -> method -> ssl_dispatch_alert ( s ) ; if ( i <= 0 ) return ( i ) ; } if ( s -> rlayer . numwpipes < numpipes ) if ( ! ssl3_setup_write_buffer ( s , numpipes , 0 ) ) return - 1 ; if ( totlen == 0 && ! create_empty_fragment ) return 0 ; sess = s -> session ; if ( ( sess == NULL ) || ( s -> enc_write_ctx == NULL ) || ( EVP_MD_CTX_md ( s -> write_hash ) == NULL ) ) { clear = s -> enc_write_ctx ? 0 : 1 ; mac_size = 0 ; } else { mac_size = EVP_MD_CTX_size ( s -> write_hash ) ; if ( mac_size < 0 ) goto err ; } if ( ! clear && ! create_empty_fragment && ! s -> s3 -> empty_fragment_done ) { if ( s -> s3 -> need_empty_fragments && type == SSL3_RT_APPLICATION_DATA ) { unsigned int tmppipelen = 0 ; prefix_len = do_ssl3_write ( s , type , buf , & tmppipelen , 1 , 1 ) ; if ( prefix_len <= 0 ) goto err ; if ( prefix_len > ( SSL3_RT_HEADER_LENGTH + SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD ) ) { SSLerr ( SSL_F_DO_SSL3_WRITE , ERR_R_INTERNAL_ERROR ) ; goto err ; } } s -> s3 -> empty_fragment_done = 1 ; } if ( create_empty_fragment ) { wb = & s -> rlayer . wbuf [ 0 ] ; # if defined ( SSL3_ALIGN_PAYLOAD ) && SSL3_ALIGN_PAYLOAD != 0 align = ( size_t ) SSL3_BUFFER_get_buf ( wb ) + 2 * SSL3_RT_HEADER_LENGTH ; align = SSL3_ALIGN_PAYLOAD - 1 - ( ( align - 1 ) % SSL3_ALIGN_PAYLOAD ) ; # endif outbuf [ 0 ] = SSL3_BUFFER_get_buf ( wb ) + align ; SSL3_BUFFER_set_offset ( wb , align ) ; } else if ( prefix_len ) { wb = & s -> rlayer . wbuf [ 0 ] ; outbuf [ 0 ] = SSL3_BUFFER_get_buf ( wb ) + SSL3_BUFFER_get_offset ( wb ) + prefix_len ; } else { for ( j = 0 ; j < numpipes ; j ++ ) { wb = & s -> rlayer . wbuf [ j ] ; # if defined ( SSL3_ALIGN_PAYLOAD ) && SSL3_ALIGN_PAYLOAD != 0 align = ( size_t ) SSL3_BUFFER_get_buf ( wb ) + SSL3_RT_HEADER_LENGTH ; align = SSL3_ALIGN_PAYLOAD - 1 - ( ( align - 1 ) % SSL3_ALIGN_PAYLOAD ) ; # endif outbuf [ j ] = SSL3_BUFFER_get_buf ( wb ) + align ; SSL3_BUFFER_set_offset ( wb , align ) ; } } if ( s -> enc_write_ctx && SSL_USE_EXPLICIT_IV ( s ) ) { int mode = EVP_CIPHER_CTX_mode ( s -> enc_write_ctx ) ; if ( mode == EVP_CIPH_CBC_MODE ) { eivlen = EVP_CIPHER_CTX_iv_length ( s -> enc_write_ctx ) ; if ( eivlen <= 1 ) eivlen = 0 ; } else if ( mode == EVP_CIPH_GCM_MODE ) eivlen = EVP_GCM_TLS_EXPLICIT_IV_LEN ; else if ( mode == EVP_CIPH_CCM_MODE ) eivlen = EVP_CCM_TLS_EXPLICIT_IV_LEN ; else eivlen = 0 ; } else eivlen = 0 ; totlen = 0 ; memset ( wr , 0 , sizeof wr ) ; for ( j = 0 ; j < numpipes ; j ++ ) { * ( outbuf [ j ] ++ ) = type & 0xff ; SSL3_RECORD_set_type ( & wr [ j ] , type ) ; * ( outbuf [ j ] ++ ) = ( s -> version >> 8 ) ; if ( SSL_get_state ( s ) == TLS_ST_CW_CLNT_HELLO && ! s -> renegotiate && TLS1_get_version ( s ) > TLS1_VERSION ) * ( outbuf [ j ] ++ ) = 0x1 ; else * ( outbuf [ j ] ++ ) = s -> version & 0xff ; plen [ j ] = outbuf [ j ] ; outbuf [ j ] += 2 ; SSL3_RECORD_set_data ( & wr [ j ] , outbuf [ j ] + eivlen ) ; SSL3_RECORD_set_length ( & wr [ j ] , ( int ) pipelens [ j ] ) ; SSL3_RECORD_set_input ( & wr [ j ] , ( unsigned char * ) & buf [ totlen ] ) ; totlen += pipelens [ j ] ; if ( s -> compress != NULL ) { if ( ! ssl3_do_compress ( s , & wr [ j ] ) ) { SSLerr ( SSL_F_DO_SSL3_WRITE , SSL_R_COMPRESSION_FAILURE ) ; goto err ; } } else { memcpy ( wr [ j ] . data , wr [ j ] . input , wr [ j ] . length ) ; SSL3_RECORD_reset_input ( & wr [ j ] ) ; } <S2SV_StartBug> if ( ! SSL_USE_ETM ( s ) && mac_size != 0 ) { <S2SV_EndBug> if ( s -> method -> ssl3_enc -> mac ( s , & wr [ j ] , & ( outbuf [ j ] [ wr [ j ] . length + eivlen ] ) , 1 ) < 0 ) goto err ; SSL3_RECORD_add_length ( & wr [ j ] , mac_size ) ; } SSL3_RECORD_set_data ( & wr [ j ] , outbuf [ j ] ) ; SSL3_RECORD_reset_input ( & wr [ j ] ) ; if ( eivlen ) { SSL3_RECORD_add_length ( & wr [ j ] , eivlen ) ; } } if ( s -> method -> ssl3_enc -> enc ( s , wr , numpipes , 1 ) < 1 ) goto err ; for ( j = 0 ; j < numpipes ; j ++ ) { <S2SV_StartBug> if ( SSL_USE_ETM ( s ) && mac_size != 0 ) { <S2SV_EndBug> if ( s -> method -> ssl3_enc -> mac ( s , & wr [ j ] , outbuf [ j ] + wr [ j ] . length , 1 ) < 0 ) goto err ; SSL3_RECORD_add_length ( & wr [ j ] , mac_size ) ; } s2n ( SSL3_RECORD_get_length ( & wr [ j ] ) , plen [ j ] ) ; if ( s -> msg_callback ) s -> msg_callback ( 1 , 0 , SSL3_RT_HEADER , plen [ j ] - 5 , 5 , s , s -> msg_callback_arg ) ; SSL3_RECORD_set_type ( & wr [ j ] , type ) ; SSL3_RECORD_add_length ( & wr [ j ] , SSL3_RT_HEADER_LENGTH ) ; if ( create_empty_fragment ) { if ( j > 0 ) { SSLerr ( SSL_F_DO_SSL3_WRITE , ERR_R_INTERNAL_ERROR ) ; goto err ; } return SSL3_RECORD_get_length ( wr ) ; } SSL3_BUFFER_set_left ( & s -> rlayer . wbuf [ j ] , prefix_len + SSL3_RECORD_get_length ( & wr [ j ] ) ) ; } s -> rlayer . wpend_tot = totlen ; s -> rlayer . wpend_buf = buf ; s -> rlayer . wpend_type = type ; s -> rlayer . wpend_ret = totlen ; return ssl3_write_pending ( s , type , buf , totlen ) ; err : return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! SSL_WRITE_ETM <S2SV_ModEnd> ( s ) <S2SV_ModStart> { if ( SSL_WRITE_ETM <S2SV_ModEnd> ( s )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int read_frame_stats ( const struct twopass_rc * p , <S2SV_EndBug> FIRSTPASS_STATS * frame_stats , int offset ) { <S2SV_StartBug> const FIRSTPASS_STATS * fps_ptr = p -> stats_in ; <S2SV_EndBug> <S2SV_StartBug> if ( offset >= 0 ) { <S2SV_EndBug> <S2SV_StartBug> if ( & fps_ptr [ offset ] >= p -> stats_in_end ) <S2SV_EndBug> return EOF ; <S2SV_StartBug> } else if ( offset < 0 ) { <S2SV_EndBug> <S2SV_StartBug> if ( & fps_ptr [ offset ] < p -> stats_in_start ) <S2SV_EndBug> return EOF ; } * frame_stats = fps_ptr [ offset ] ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static const FIRSTPASS_STATS * <S2SV_ModEnd> read_frame_stats ( const <S2SV_ModStart> read_frame_stats ( const TWO_PASS * p <S2SV_ModEnd> , int offset <S2SV_ModStart> offset ) { if ( <S2SV_ModEnd> ( offset >= <S2SV_ModStart> offset >= 0 && p -> stats_in + offset <S2SV_ModEnd> >= p -> <S2SV_ModStart> -> stats_in_end ) || <S2SV_ModEnd> ( offset < <S2SV_ModStart> offset < 0 && p -> stats_in + offset <S2SV_ModEnd> < p -> <S2SV_ModStart> -> stats_in_start ) ) { return NULL ; } return & p -> stats_in <S2SV_ModEnd> [ offset ] <S2SV_ModStart> offset ] ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5400\n\n```\nCWE-119 static int airspy_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct airspy * s ; int ret ; u8 u8tmp , buf [ BUF_SIZE ] ; s = kzalloc ( sizeof ( struct airspy ) , GFP_KERNEL ) ; if ( s == NULL ) { dev_err ( & intf -> dev , \"Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>state\\\\n\" ) ; return - ENOMEM ; } mutex_init ( & s -> v4l2_lock ) ; mutex_init ( & s -> vb_queue_lock ) ; spin_lock_init ( & s -> queued_bufs_lock ) ; INIT_LIST_HEAD ( & s -> queued_bufs ) ; s -> dev = & intf -> dev ; s -> udev = interface_to_usbdev ( intf ) ; s -> f_adc = bands [ 0 ] . rangelow ; s -> f_rf = bands_rf [ 0 ] . rangelow ; s -> pixelformat = formats [ 0 ] . pixelformat ; s -> buffersize = formats [ 0 ] . buffersize ; ret = airspy_ctrl_msg ( s , CMD_BOARD_ID_READ , 0 , 0 , & u8tmp , 1 ) ; if ( ret == 0 ) ret = airspy_ctrl_msg ( s , CMD_VERSION_STRING_READ , 0 , 0 , buf , BUF_SIZE ) ; if ( ret ) { dev_err ( s -> dev , \"Could<S2SV_blank>not<S2SV_blank>detect<S2SV_blank>board\\\\n\" ) ; goto err_free_mem ; } buf [ BUF_SIZE - 1 ] = '\\\\0' ; dev_info ( s -> dev , \"Board<S2SV_blank>ID:<S2SV_blank>%02x\\\\n\" , u8tmp ) ; dev_info ( s -> dev , \"Firmware<S2SV_blank>version:<S2SV_blank>%s\\\\n\" , buf ) ; s -> vb_queue . type = V4L2_BUF_TYPE_SDR_CAPTURE ; s -> vb_queue . io_modes = VB2_MMAP | VB2_USERPTR | VB2_READ ; s -> vb_queue . drv_priv = s ; s -> vb_queue . buf_struct_size = sizeof ( struct airspy_frame_buf ) ; s -> vb_queue . ops = & airspy_vb2_ops ; s -> vb_queue . mem_ops = & vb2_vmalloc_memops ; s -> vb_queue . timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC ; ret = vb2_queue_init ( & s -> vb_queue ) ; if ( ret ) { dev_err ( s -> dev , \"Could<S2SV_blank>not<S2SV_blank>initialize<S2SV_blank>vb2<S2SV_blank>queue\\\\n\" ) ; goto err_free_mem ; } s -> vdev = airspy_template ; s -> vdev . queue = & s -> vb_queue ; s -> vdev . queue -> lock = & s -> vb_queue_lock ; video_set_drvdata ( & s -> vdev , s ) ; s -> v4l2_dev . release = airspy_video_release ; ret = v4l2_device_register ( & intf -> dev , & s -> v4l2_dev ) ; if ( ret ) { dev_err ( s -> dev , \"Failed<S2SV_blank>to<S2SV_blank>register<S2SV_blank>v4l2-device<S2SV_blank>(%d)\\\\n\" , ret ) ; goto err_free_mem ; } v4l2_ctrl_handler_init ( & s -> hdl , 5 ) ; s -> lna_gain_auto = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_LNA_GAIN_AUTO , 0 , 1 , 1 , 0 ) ; s -> lna_gain = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_LNA_GAIN , 0 , 14 , 1 , 8 ) ; v4l2_ctrl_auto_cluster ( 2 , & s -> lna_gain_auto , 0 , false ) ; s -> mixer_gain_auto = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_MIXER_GAIN_AUTO , 0 , 1 , 1 , 0 ) ; s -> mixer_gain = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_MIXER_GAIN , 0 , 15 , 1 , 8 ) ; v4l2_ctrl_auto_cluster ( 2 , & s -> mixer_gain_auto , 0 , false ) ; s -> if_gain = v4l2_ctrl_new_std ( & s -> hdl , & airspy_ctrl_ops , V4L2_CID_RF_TUNER_IF_GAIN , 0 , 15 , 1 , 0 ) ; if ( s -> hdl . error ) { ret = s -> hdl . error ; dev_err ( s -> dev , \"Could<S2SV_blank>not<S2SV_blank>initialize<S2SV_blank>controls\\\\n\" ) ; goto err_free_controls ; } v4l2_ctrl_handler_setup ( & s -> hdl ) ; s -> v4l2_dev . ctrl_handler = & s -> hdl ; s -> vdev . v4l2_dev = & s -> v4l2_dev ; s -> vdev . lock = & s -> v4l2_lock ; ret = video_register_device ( & s -> vdev , VFL_TYPE_SDR , - 1 ) ; if ( ret ) { dev_err ( s -> dev , \"Failed<S2SV_blank>to<S2SV_blank>register<S2SV_blank>as<S2SV_blank>video<S2SV_blank>device<S2SV_blank>(%d)\\\\n\" , ret ) ; <S2SV_StartBug> goto err_unregister_v4l2_dev ; <S2SV_EndBug> } dev_info ( s -> dev , \"Registered<S2SV_blank>as<S2SV_blank>%s\\\\n\" , video_device_node_name ( & s -> vdev ) ) ; dev_notice ( s -> dev , \"SDR<S2SV_blank>API<S2SV_blank>is<S2SV_blank>still<S2SV_blank>slightly<S2SV_blank>experimental<S2SV_blank>and<S2SV_blank>functionality<S2SV_blank>changes<S2SV_blank>may<S2SV_blank>follow\\\\n\" ) ; return 0 ; err_free_controls : v4l2_ctrl_handler_free ( & s -> hdl ) ; <S2SV_StartBug> err_unregister_v4l2_dev : <S2SV_EndBug> v4l2_device_unregister ( & s -> v4l2_dev ) ; err_free_mem : kfree ( s ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; goto err_free_controls <S2SV_ModEnd> ; } dev_info <S2SV_ModStart> hdl ) ; <S2SV_ModEnd> v4l2_device_unregister ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * frame ) { AVFilterContext * ctx = inlink -> dst ; FieldOrderContext * s = ctx -> priv ; AVFilterLink * outlink = ctx -> outputs [ 0 ] ; int h , plane , line_step , line_size , line ; uint8_t * data ; if ( ! frame -> interlaced_frame || frame -> top_field_first == s -> dst_tff ) return ff_filter_frame ( outlink , frame ) ; av_dlog ( ctx , \"picture<S2SV_blank>will<S2SV_blank>move<S2SV_blank>%s<S2SV_blank>one<S2SV_blank>line\\\\n\" , s -> dst_tff ? \"up\" : \"down\" ) ; h = frame -> height ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && frame -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> line_step = frame -> linesize [ plane ] ; line_size = s -> line_size [ plane ] ; data = frame -> data [ plane ] ; if ( s -> dst_tff ) { for ( line = 0 ; line < h ; line ++ ) { if ( 1 + line < frame -> height ) { memcpy ( data , data + line_step , line_size ) ; } else { memcpy ( data , data - line_step - line_step , line_size ) ; } data += line_step ; } } else { data += ( h - 1 ) * line_step ; for ( line = h - 1 ; line >= 0 ; line -- ) { if ( line > 0 ) { memcpy ( data , data - line_step , line_size ) ; } else { memcpy ( data , data + line_step + line_step , line_size ) ; } data -= line_step ; } } } frame -> top_field_first = s -> dst_tff ; return ff_filter_frame ( outlink , frame ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ plane ] && frame -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static vpx_codec_err_t vp8_set_reference ( vpx_codec_alg_priv_t * ctx , <S2SV_EndBug> int ctr_id , va_list args ) { vpx_ref_frame_t * data = va_arg ( args , vpx_ref_frame_t * ) ; if ( data && ! ctx -> yv12_frame_buffers . use_frame_threads ) { vpx_ref_frame_t * frame = ( vpx_ref_frame_t * ) data ; YV12_BUFFER_CONFIG sd ; image2yuvconfig ( & frame -> img , & sd ) ; return vp8dx_set_reference ( ctx -> yv12_frame_buffers . pbi [ 0 ] , frame -> frame_type , & sd ) ; } else return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_codec_alg_priv_t * ctx <S2SV_ModEnd> , va_list args\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5366\n\n```\nCWE-399 int udp_recvmsg ( struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_in * , sin , msg -> msg_name ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; int is_udplite = IS_UDPLITE ( sk ) ; bool slow ; if ( flags & MSG_ERRQUEUE ) return ip_recv_error ( sk , msg , len , addr_len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { if ( udp_lib_checksum_complete ( skb ) ) goto csum_copy_err ; } if ( skb_csum_unnecessary ( skb ) ) err = skb_copy_datagram_msg ( skb , sizeof ( struct udphdr ) , msg , copied ) ; else { err = skb_copy_and_csum_datagram_msg ( skb , sizeof ( struct udphdr ) , msg ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udp_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_port = udp_hdr ( skb ) -> source ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; * addr_len = sizeof ( * sin ) ; } if ( inet -> cmsg_flags ) ip_cmsg_recv_offset ( msg , skb , sizeof ( struct udphdr ) ) ; err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } unlock_sock_fast ( sk , slow ) ; <S2SV_StartBug> if ( noblock ) <S2SV_EndBug> return - EAGAIN ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> slow ) ; cond_resched ( ) <S2SV_ModEnd> ; msg ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 int user_update ( struct key * key , struct key_preparsed_payload * prep ) { struct user_key_payload * zap = NULL ; int ret ; ret = key_payload_reserve ( key , prep -> datalen ) ; if ( ret < 0 ) return ret ; key -> expiry = prep -> expiry ; <S2SV_StartBug> if ( ! test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) <S2SV_EndBug> zap = dereference_key_locked ( key ) ; rcu_assign_keypointer ( key , prep -> payload . data [ 0 ] ) ; prep -> payload . data [ 0 ] = NULL ; if ( zap ) call_rcu ( & zap -> rcu , user_free_payload_rcu ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive ( key <S2SV_ModEnd> ) ) zap\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14054\n\n```\nCWE-834 static int ivr_read_header ( AVFormatContext * s ) { unsigned tag , type , len , tlen , value ; int i , j , n , count , nb_streams = 0 , ret ; uint8_t key [ 256 ] , val [ 256 ] ; AVIOContext * pb = s -> pb ; AVStream * st ; int64_t pos , offset , temp ; pos = avio_tell ( pb ) ; tag = avio_rl32 ( pb ) ; if ( tag == MKTAG ( '.' , 'R' , '1' , 'M' ) ) { if ( avio_rb16 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; if ( avio_r8 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; len = avio_rb32 ( pb ) ; avio_skip ( pb , len ) ; avio_skip ( pb , 5 ) ; temp = avio_rb64 ( pb ) ; while ( ! avio_feof ( pb ) && temp ) { offset = temp ; temp = avio_rb64 ( pb ) ; } avio_skip ( pb , offset - avio_tell ( pb ) ) ; if ( avio_r8 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; len = avio_rb32 ( pb ) ; avio_skip ( pb , len ) ; if ( avio_r8 ( pb ) != 2 ) return AVERROR_INVALIDDATA ; avio_skip ( pb , 16 ) ; pos = avio_tell ( pb ) ; tag = avio_rl32 ( pb ) ; } if ( tag != MKTAG ( '.' , 'R' , 'E' , 'C' ) ) return AVERROR_INVALIDDATA ; if ( avio_r8 ( pb ) != 0 ) return AVERROR_INVALIDDATA ; count = avio_rb32 ( pb ) ; for ( i = 0 ; i < count ; i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; type = avio_r8 ( pb ) ; tlen = avio_rb32 ( pb ) ; avio_get_str ( pb , tlen , key , sizeof ( key ) ) ; len = avio_rb32 ( pb ) ; if ( type == 5 ) { avio_get_str ( pb , len , val , sizeof ( val ) ) ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>\\'%s\\'\\\\n\" , key , val ) ; } else if ( type == 4 ) { av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>\\'0x\" , key ) ; <S2SV_StartBug> for ( j = 0 ; j < len ; j ++ ) <S2SV_EndBug> <S2SV_StartBug> av_log ( s , AV_LOG_DEBUG , \"%X\" , avio_r8 ( pb ) ) ; <S2SV_EndBug> av_log ( s , AV_LOG_DEBUG , \"\\'\\\\n\" ) ; } else if ( len == 4 && type == 3 && ! strncmp ( key , \"StreamCount\" , tlen ) ) { nb_streams = value = avio_rb32 ( pb ) ; } else if ( len == 4 && type == 3 ) { value = avio_rb32 ( pb ) ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>%d\\\\n\" , key , value ) ; } else { av_log ( s , AV_LOG_DEBUG , \"Skipping<S2SV_blank>unsupported<S2SV_blank>key:<S2SV_blank>%s\\\\n\" , key ) ; avio_skip ( pb , len ) ; } } for ( n = 0 ; n < nb_streams ; n ++ ) { st = avformat_new_stream ( s , NULL ) ; if ( ! st ) return AVERROR ( ENOMEM ) ; st -> priv_data = ff_rm_alloc_rmstream ( ) ; if ( ! st -> priv_data ) return AVERROR ( ENOMEM ) ; if ( avio_r8 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; count = avio_rb32 ( pb ) ; for ( i = 0 ; i < count ; i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; type = avio_r8 ( pb ) ; tlen = avio_rb32 ( pb ) ; avio_get_str ( pb , tlen , key , sizeof ( key ) ) ; len = avio_rb32 ( pb ) ; if ( type == 5 ) { avio_get_str ( pb , len , val , sizeof ( val ) ) ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>\\'%s\\'\\\\n\" , key , val ) ; } else if ( type == 4 && ! strncmp ( key , \"OpaqueData\" , tlen ) ) { ret = ffio_ensure_seekback ( pb , 4 ) ; if ( ret < 0 ) return ret ; if ( avio_rb32 ( pb ) == MKBETAG ( 'M' , 'L' , 'T' , 'I' ) ) { ret = rm_read_multi ( s , pb , st , NULL ) ; } else { avio_seek ( pb , - 4 , SEEK_CUR ) ; ret = ff_rm_read_mdpr_codecdata ( s , pb , st , st -> priv_data , len , NULL ) ; } if ( ret < 0 ) return ret ; } else if ( type == 4 ) { int j ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>\\'0x\" , key ) ; for ( j = 0 ; j < len ; j ++ ) av_log ( s , AV_LOG_DEBUG , \"%X\" , avio_r8 ( pb ) ) ; av_log ( s , AV_LOG_DEBUG , \"\\'\\\\n\" ) ; } else if ( len == 4 && type == 3 && ! strncmp ( key , \"Duration\" , tlen ) ) { st -> duration = avio_rb32 ( pb ) ; } else if ( len == 4 && type == 3 ) { value = avio_rb32 ( pb ) ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>%d\\\\n\" , key , value ) ; } else { av_log ( s , AV_LOG_DEBUG , \"Skipping<S2SV_blank>unsupported<S2SV_blank>key:<S2SV_blank>%s\\\\n\" , key ) ; avio_skip ( pb , len ) ; } } } if ( avio_r8 ( pb ) != 6 ) return AVERROR_INVALIDDATA ; avio_skip ( pb , 12 ) ; avio_skip ( pb , avio_rb64 ( pb ) + pos - avio_tell ( s -> pb ) ) ; if ( avio_r8 ( pb ) != 8 ) return AVERROR_INVALIDDATA ; avio_skip ( pb , 8 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> j ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7990\n\n```\nCWE-362 int rds_sendmsg ( struct socket * sock , struct msghdr * msg , size_t payload_len ) { struct sock * sk = sock -> sk ; struct rds_sock * rs = rds_sk_to_rs ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_in * , usin , msg -> msg_name ) ; __be32 daddr ; __be16 dport ; struct rds_message * rm = NULL ; struct rds_connection * conn ; int ret = 0 ; int queued = 0 , allocated_mr = 0 ; int nonblock = msg -> msg_flags & MSG_DONTWAIT ; long timeo = sock_sndtimeo ( sk , nonblock ) ; if ( msg -> msg_flags & ~ ( MSG_DONTWAIT | MSG_CMSG_COMPAT ) ) { ret = - EOPNOTSUPP ; goto out ; } if ( msg -> msg_namelen ) { if ( msg -> msg_namelen < sizeof ( * usin ) || usin -> sin_family != AF_INET ) { ret = - EINVAL ; goto out ; } daddr = usin -> sin_addr . s_addr ; dport = usin -> sin_port ; } else { lock_sock ( sk ) ; daddr = rs -> rs_conn_addr ; dport = rs -> rs_conn_port ; release_sock ( sk ) ; } <S2SV_StartBug> if ( daddr == 0 || rs -> rs_bound_addr == 0 ) { <S2SV_EndBug> <S2SV_StartBug> ret = - ENOTCONN ; <S2SV_EndBug> goto out ; <S2SV_StartBug> } <S2SV_EndBug> if ( payload_len > rds_sk_sndbuf ( rs ) ) { ret = - EMSGSIZE ; goto out ; } ret = rds_rm_size ( msg , payload_len ) ; if ( ret < 0 ) goto out ; rm = rds_message_alloc ( ret , GFP_KERNEL ) ; if ( ! rm ) { ret = - ENOMEM ; goto out ; } if ( payload_len ) { rm -> data . op_sg = rds_message_alloc_sgs ( rm , ceil ( payload_len , PAGE_SIZE ) ) ; if ( ! rm -> data . op_sg ) { ret = - ENOMEM ; goto out ; } ret = rds_message_copy_from_user ( rm , & msg -> msg_iter ) ; if ( ret ) goto out ; } rm -> data . op_active = 1 ; rm -> m_daddr = daddr ; if ( rs -> rs_conn && rs -> rs_conn -> c_faddr == daddr ) conn = rs -> rs_conn ; else { conn = rds_conn_create_outgoing ( sock_net ( sock -> sk ) , rs -> rs_bound_addr , daddr , rs -> rs_transport , sock -> sk -> sk_allocation ) ; if ( IS_ERR ( conn ) ) { ret = PTR_ERR ( conn ) ; goto out ; } rs -> rs_conn = conn ; } ret = rds_cmsg_send ( rs , rm , msg , & allocated_mr ) ; if ( ret ) goto out ; if ( rm -> rdma . op_active && ! conn -> c_trans -> xmit_rdma ) { printk_ratelimited ( KERN_NOTICE \"rdma_op<S2SV_blank>%p<S2SV_blank>conn<S2SV_blank>xmit_rdma<S2SV_blank>%p\\\\n\" , & rm -> rdma , conn -> c_trans -> xmit_rdma ) ; ret = - EOPNOTSUPP ; goto out ; } if ( rm -> atomic . op_active && ! conn -> c_trans -> xmit_atomic ) { printk_ratelimited ( KERN_NOTICE \"atomic_op<S2SV_blank>%p<S2SV_blank>conn<S2SV_blank>xmit_atomic<S2SV_blank>%p\\\\n\" , & rm -> atomic , conn -> c_trans -> xmit_atomic ) ; ret = - EOPNOTSUPP ; goto out ; } rds_conn_connect_if_down ( conn ) ; ret = rds_cong_wait ( conn -> c_fcong , dport , nonblock , rs ) ; if ( ret ) { rs -> rs_seen_congestion = 1 ; goto out ; } while ( ! rds_send_queue_rm ( rs , conn , rm , rs -> rs_bound_port , dport , & queued ) ) { rds_stats_inc ( s_send_queue_full ) ; if ( nonblock ) { ret = - EAGAIN ; goto out ; } timeo = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , rds_send_queue_rm ( rs , conn , rm , rs -> rs_bound_port , dport , & queued ) , timeo ) ; rdsdebug ( \"sendmsg<S2SV_blank>woke<S2SV_blank>queued<S2SV_blank>%d<S2SV_blank>timeo<S2SV_blank>%ld\\\\n\" , queued , timeo ) ; if ( timeo > 0 || timeo == MAX_SCHEDULE_TIMEOUT ) continue ; ret = timeo ; if ( ret == 0 ) ret = - ETIMEDOUT ; goto out ; } rds_stats_inc ( s_send_queued ) ; ret = rds_send_xmit ( conn ) ; if ( ret == - ENOMEM || ret == - EAGAIN ) queue_delayed_work ( rds_wq , & conn -> c_send_w , 1 ) ; rds_message_put ( rm ) ; return payload_len ; out : if ( allocated_mr ) rds_rdma_unuse ( rs , rds_rdma_cookie_key ( rm -> m_rdma_cookie ) , 1 ) ; if ( rm ) rds_message_put ( rm ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } lock_sock ( sk ) ; <S2SV_ModStart> 0 ) { release_sock ( sk ) ; <S2SV_ModStart> out ; } release_sock ( sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12847\n\n```\nCWE-665 int main ( int argc , char * * argv ) { int result ; int error = FALSE ; int display_license = FALSE ; int display_help = FALSE ; int c = 0 ; struct tm * tm , tm_s ; time_t now ; char datestring [ 256 ] ; nagios_macros * mac ; const char * worker_socket = NULL ; int i ; # ifdef HAVE_SIGACTION struct sigaction sig_action ; # endif # ifdef HAVE_GETOPT_H int option_index = 0 ; static struct option long_options [ ] = { { \"help\" , no_argument , 0 , 'h' } , { \"version\" , no_argument , 0 , 'V' } , { \"license\" , no_argument , 0 , 'V' } , { \"verify-config\" , no_argument , 0 , 'v' } , { \"daemon\" , no_argument , 0 , 'd' } , { \"test-scheduling\" , no_argument , 0 , 's' } , { \"precache-objects\" , no_argument , 0 , 'p' } , { \"use-precached-objects\" , no_argument , 0 , 'u' } , { \"enable-timing-point\" , no_argument , 0 , 'T' } , { \"worker\" , required_argument , 0 , 'W' } , { 0 , 0 , 0 , 0 } } ; # define getopt ( argc , argv , o ) getopt_long ( argc , argv , o , long_options , & option_index ) # endif memset ( & loadctl , 0 , sizeof ( loadctl ) ) ; mac = get_global_macros ( ) ; if ( argc < 2 ) error = TRUE ; while ( 1 ) { c = getopt ( argc , argv , \"+hVvdspuxTW\" ) ; if ( c == - 1 || c == EOF ) break ; switch ( c ) { case '?' : case 'h' : display_help = TRUE ; break ; case 'V' : display_license = TRUE ; break ; case 'v' : verify_config ++ ; break ; case 's' : test_scheduling = TRUE ; break ; case 'd' : daemon_mode = TRUE ; break ; case 'p' : precache_objects = TRUE ; break ; case 'u' : use_precached_objects = TRUE ; break ; case 'T' : enable_timing_point = TRUE ; break ; case 'W' : worker_socket = optarg ; break ; case 'x' : printf ( \"Warning:<S2SV_blank>-x<S2SV_blank>is<S2SV_blank>deprecated<S2SV_blank>and<S2SV_blank>will<S2SV_blank>be<S2SV_blank>removed\\\\n\" ) ; break ; default : break ; } } # ifdef DEBUG_MEMORY mtrace ( ) ; # endif if ( worker_socket ) { exit ( nagios_core_worker ( worker_socket ) ) ; } init_main_cfg_vars ( 1 ) ; init_shared_cfg_vars ( 1 ) ; if ( daemon_mode == FALSE ) { printf ( \"\\\\nNagios<S2SV_blank>Core<S2SV_blank>%s\\\\n\" , PROGRAM_VERSION ) ; printf ( \"Copyright<S2SV_blank>(c)<S2SV_blank>2009-present<S2SV_blank>Nagios<S2SV_blank>Core<S2SV_blank>Development<S2SV_blank>Team<S2SV_blank>and<S2SV_blank>Community<S2SV_blank>Contributors\\\\n\" ) ; printf ( \"Copyright<S2SV_blank>(c)<S2SV_blank>1999-2009<S2SV_blank>Ethan<S2SV_blank>Galstad\\\\n\" ) ; printf ( \"Last<S2SV_blank>Modified:<S2SV_blank>%s\\\\n\" , PROGRAM_MODIFICATION_DATE ) ; printf ( \"License:<S2SV_blank>GPL\\\\n\\\\n\" ) ; printf ( \"Website:<S2SV_blank>https://www.nagios.org\\\\n\" ) ; } if ( display_license == TRUE ) { printf ( \"This<S2SV_blank>program<S2SV_blank>is<S2SV_blank>free<S2SV_blank>software;<S2SV_blank>you<S2SV_blank>can<S2SV_blank>redistribute<S2SV_blank>it<S2SV_blank>and/or<S2SV_blank>modify\\\\n\" ) ; printf ( \"it<S2SV_blank>under<S2SV_blank>the<S2SV_blank>terms<S2SV_blank>of<S2SV_blank>the<S2SV_blank>GNU<S2SV_blank>General<S2SV_blank>Public<S2SV_blank>License<S2SV_blank>version<S2SV_blank>2<S2SV_blank>as\\\\n\" ) ; printf ( \"published<S2SV_blank>by<S2SV_blank>the<S2SV_blank>Free<S2SV_blank>Software<S2SV_blank>Foundation.\\\\n\\\\n\" ) ; printf ( \"This<S2SV_blank>program<S2SV_blank>is<S2SV_blank>distributed<S2SV_blank>in<S2SV_blank>the<S2SV_blank>hope<S2SV_blank>that<S2SV_blank>it<S2SV_blank>will<S2SV_blank>be<S2SV_blank>useful,\\\\n\" ) ; printf ( \"but<S2SV_blank>WITHOUT<S2SV_blank>ANY<S2SV_blank>WARRANTY;<S2SV_blank>without<S2SV_blank>even<S2SV_blank>the<S2SV_blank>implied<S2SV_blank>warranty<S2SV_blank>of\\\\n\" ) ; printf ( \"MERCHANTABILITY<S2SV_blank>or<S2SV_blank>FITNESS<S2SV_blank>FOR<S2SV_blank>A<S2SV_blank>PARTICULAR<S2SV_blank>PURPOSE.<S2SV_blank><S2SV_blank>See<S2SV_blank>the\\\\n\" ) ; printf ( \"GNU<S2SV_blank>General<S2SV_blank>Public<S2SV_blank>License<S2SV_blank>for<S2SV_blank>more<S2SV_blank>details.\\\\n\\\\n\" ) ; printf ( \"You<S2SV_blank>should<S2SV_blank>have<S2SV_blank>received<S2SV_blank>a<S2SV_blank>copy<S2SV_blank>of<S2SV_blank>the<S2SV_blank>GNU<S2SV_blank>General<S2SV_blank>Public<S2SV_blank>License\\\\n\" ) ; printf ( \"along<S2SV_blank>with<S2SV_blank>this<S2SV_blank>program;<S2SV_blank>if<S2SV_blank>not,<S2SV_blank>write<S2SV_blank>to<S2SV_blank>the<S2SV_blank>Free<S2SV_blank>Software\\\\n\" ) ; printf ( \"Foundation,<S2SV_blank>Inc.,<S2SV_blank>675<S2SV_blank>Mass<S2SV_blank>Ave,<S2SV_blank>Cambridge,<S2SV_blank>MA<S2SV_blank>02139,<S2SV_blank>USA.\\\\n\\\\n\" ) ; exit ( OK ) ; } if ( optind >= argc ) error = TRUE ; if ( error == TRUE || display_help == TRUE ) { printf ( \"Usage:<S2SV_blank>%s<S2SV_blank>[options]<S2SV_blank><main_config_file>\\\\n\" , argv [ 0 ] ) ; printf ( \"\\\\n\" ) ; printf ( \"Options:\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-v,<S2SV_blank>--verify-config<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>all<S2SV_blank>configuration<S2SV_blank>data<S2SV_blank>(-v<S2SV_blank>-v<S2SV_blank>for<S2SV_blank>more<S2SV_blank>info)\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-s,<S2SV_blank>--test-scheduling<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Shows<S2SV_blank>projected/recommended<S2SV_blank>check<S2SV_blank>scheduling<S2SV_blank>and<S2SV_blank>other\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>diagnostic<S2SV_blank>info<S2SV_blank>based<S2SV_blank>on<S2SV_blank>the<S2SV_blank>current<S2SV_blank>configuration<S2SV_blank>files.\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-T,<S2SV_blank>--enable-timing-point<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Enable<S2SV_blank>timed<S2SV_blank>commentary<S2SV_blank>on<S2SV_blank>initialization\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-x,<S2SV_blank>--dont-verify-paths<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Deprecated<S2SV_blank>(Don\\'t<S2SV_blank>check<S2SV_blank>for<S2SV_blank>circular<S2SV_blank>object<S2SV_blank>paths)\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-p,<S2SV_blank>--precache-objects<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Precache<S2SV_blank>object<S2SV_blank>configuration\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-u,<S2SV_blank>--use-precached-objects<S2SV_blank><S2SV_blank>Use<S2SV_blank>precached<S2SV_blank>object<S2SV_blank>config<S2SV_blank>file\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-d,<S2SV_blank>--daemon<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Starts<S2SV_blank>Nagios<S2SV_blank>in<S2SV_blank>daemon<S2SV_blank>mode,<S2SV_blank>instead<S2SV_blank>of<S2SV_blank>as<S2SV_blank>a<S2SV_blank>foreground<S2SV_blank>process\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank>-W,<S2SV_blank>--worker<S2SV_blank>/path/to/socket<S2SV_blank>Act<S2SV_blank>as<S2SV_blank>a<S2SV_blank>worker<S2SV_blank>for<S2SV_blank>an<S2SV_blank>already<S2SV_blank>running<S2SV_blank>daemon\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"Visit<S2SV_blank>the<S2SV_blank>Nagios<S2SV_blank>website<S2SV_blank>at<S2SV_blank>https://www.nagios.org/<S2SV_blank>for<S2SV_blank>bug<S2SV_blank>fixes,<S2SV_blank>new\\\\n\" ) ; printf ( \"releases,<S2SV_blank>online<S2SV_blank>documentation,<S2SV_blank>FAQs,<S2SV_blank>information<S2SV_blank>on<S2SV_blank>subscribing<S2SV_blank>to\\\\n\" ) ; printf ( \"the<S2SV_blank>mailing<S2SV_blank>lists,<S2SV_blank>and<S2SV_blank>commercial<S2SV_blank>support<S2SV_blank>options<S2SV_blank>for<S2SV_blank>Nagios.\\\\n\" ) ; printf ( \"\\\\n\" ) ; exit ( ERROR ) ; } config_file = nspath_absolute ( argv [ optind ] , NULL ) ; if ( config_file == NULL ) { printf ( \"Error<S2SV_blank>allocating<S2SV_blank>memory.\\\\n\" ) ; exit ( ERROR ) ; } config_file_dir = nspath_absolute_dirname ( config_file , NULL ) ; # ifdef HAVE_SIGACTION sig_action . sa_sigaction = NULL ; sig_action . sa_handler = handle_sigxfsz ; sigfillset ( & sig_action . sa_mask ) ; sig_action . sa_flags = SA_NODEFER | SA_RESTART ; sigaction ( SIGXFSZ , & sig_action , NULL ) ; # else signal ( SIGXFSZ , handle_sigxfsz ) ; # endif if ( verify_config || test_scheduling || precache_objects ) { reset_variables ( ) ; set_loadctl_defaults ( ) ; if ( verify_config ) printf ( \"Reading<S2SV_blank>configuration<S2SV_blank>data...\\\\n\" ) ; result = read_main_config_file ( config_file ) ; if ( result != OK ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>processing<S2SV_blank>main<S2SV_blank>config<S2SV_blank>file!\\\\n\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( verify_config ) printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Read<S2SV_blank>main<S2SV_blank>config<S2SV_blank>file<S2SV_blank>okay...\\\\n\" ) ; if ( ( result = drop_privileges ( nagios_user , nagios_group ) ) == ERROR ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>drop<S2SV_blank>privileges.<S2SV_blank><S2SV_blank>Aborting.\" ) ; exit ( EXIT_FAILURE ) ; } if ( ! verify_config && test_configured_paths ( ) == ERROR ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>One<S2SV_blank>or<S2SV_blank>more<S2SV_blank>path<S2SV_blank>problems<S2SV_blank>detected.<S2SV_blank>Aborting.\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } result = read_all_object_data ( config_file ) ; if ( result != OK ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>processing<S2SV_blank>object<S2SV_blank>config<S2SV_blank>files!\\\\n\\\\n\" ) ; if ( ! strstr ( config_file , \"nagios.cfg\" ) ) { printf ( \"\\\\n***><S2SV_blank>The<S2SV_blank>name<S2SV_blank>of<S2SV_blank>the<S2SV_blank>main<S2SV_blank>configuration<S2SV_blank>file<S2SV_blank>looks<S2SV_blank>suspicious...\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>you<S2SV_blank>are<S2SV_blank>specifying<S2SV_blank>the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>the<S2SV_blank>MAIN<S2SV_blank>configuration<S2SV_blank>file<S2SV_blank>on\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>the<S2SV_blank>command<S2SV_blank>line<S2SV_blank>and<S2SV_blank>not<S2SV_blank>the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>another<S2SV_blank>configuration<S2SV_blank>file.<S2SV_blank><S2SV_blank>The\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>main<S2SV_blank>configuration<S2SV_blank>file<S2SV_blank>is<S2SV_blank>typically<S2SV_blank>\\'%s\\'\\\\n\" , DEFAULT_CONFIG_FILE ) ; } printf ( \"\\\\n***><S2SV_blank>One<S2SV_blank>or<S2SV_blank>more<S2SV_blank>problems<S2SV_blank>was<S2SV_blank>encountered<S2SV_blank>while<S2SV_blank>processing<S2SV_blank>the<S2SV_blank>config<S2SV_blank>files...\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Check<S2SV_blank>your<S2SV_blank>configuration<S2SV_blank>file(s)<S2SV_blank>to<S2SV_blank>ensure<S2SV_blank>that<S2SV_blank>they<S2SV_blank>contain<S2SV_blank>valid\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>directives<S2SV_blank>and<S2SV_blank>data<S2SV_blank>definitions.<S2SV_blank><S2SV_blank>If<S2SV_blank>you<S2SV_blank>are<S2SV_blank>upgrading<S2SV_blank>from<S2SV_blank>a<S2SV_blank>previous\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>version<S2SV_blank>of<S2SV_blank>Nagios,<S2SV_blank>you<S2SV_blank>should<S2SV_blank>be<S2SV_blank>aware<S2SV_blank>that<S2SV_blank>some<S2SV_blank>variables/definitions\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>may<S2SV_blank>have<S2SV_blank>been<S2SV_blank>removed<S2SV_blank>or<S2SV_blank>modified<S2SV_blank>in<S2SV_blank>this<S2SV_blank>version.<S2SV_blank><S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>to<S2SV_blank>read\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>the<S2SV_blank>HTML<S2SV_blank>documentation<S2SV_blank>regarding<S2SV_blank>the<S2SV_blank>config<S2SV_blank>files,<S2SV_blank>as<S2SV_blank>well<S2SV_blank>as<S2SV_blank>the\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\'Whats<S2SV_blank>New\\'<S2SV_blank>section<S2SV_blank>to<S2SV_blank>find<S2SV_blank>out<S2SV_blank>what<S2SV_blank>has<S2SV_blank>changed.\\\\n\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( verify_config ) { printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank>Read<S2SV_blank>object<S2SV_blank>config<S2SV_blank>files<S2SV_blank>okay...\\\\n\\\\n\" ) ; printf ( \"Running<S2SV_blank>pre-flight<S2SV_blank>check<S2SV_blank>on<S2SV_blank>configuration<S2SV_blank>data...\\\\n\\\\n\" ) ; } result = pre_flight_check ( ) ; if ( result != OK ) { printf ( \"\\\\n***><S2SV_blank>One<S2SV_blank>or<S2SV_blank>more<S2SV_blank>problems<S2SV_blank>was<S2SV_blank>encountered<S2SV_blank>while<S2SV_blank>running<S2SV_blank>the<S2SV_blank>pre-flight<S2SV_blank>check...\\\\n\" ) ; printf ( \"\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Check<S2SV_blank>your<S2SV_blank>configuration<S2SV_blank>file(s)<S2SV_blank>to<S2SV_blank>ensure<S2SV_blank>that<S2SV_blank>they<S2SV_blank>contain<S2SV_blank>valid\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>directives<S2SV_blank>and<S2SV_blank>data<S2SV_blank>definitions.<S2SV_blank><S2SV_blank>If<S2SV_blank>you<S2SV_blank>are<S2SV_blank>upgrading<S2SV_blank>from<S2SV_blank>a<S2SV_blank>previous\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>version<S2SV_blank>of<S2SV_blank>Nagios,<S2SV_blank>you<S2SV_blank>should<S2SV_blank>be<S2SV_blank>aware<S2SV_blank>that<S2SV_blank>some<S2SV_blank>variables/definitions\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>may<S2SV_blank>have<S2SV_blank>been<S2SV_blank>removed<S2SV_blank>or<S2SV_blank>modified<S2SV_blank>in<S2SV_blank>this<S2SV_blank>version.<S2SV_blank><S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>to<S2SV_blank>read\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>the<S2SV_blank>HTML<S2SV_blank>documentation<S2SV_blank>regarding<S2SV_blank>the<S2SV_blank>config<S2SV_blank>files,<S2SV_blank>as<S2SV_blank>well<S2SV_blank>as<S2SV_blank>the\\\\n\" ) ; printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\'Whats<S2SV_blank>New\\'<S2SV_blank>section<S2SV_blank>to<S2SV_blank>find<S2SV_blank>out<S2SV_blank>what<S2SV_blank>has<S2SV_blank>changed.\\\\n\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( verify_config ) { printf ( \"\\\\nThings<S2SV_blank>look<S2SV_blank>okay<S2SV_blank>-<S2SV_blank>No<S2SV_blank>serious<S2SV_blank>problems<S2SV_blank>were<S2SV_blank>detected<S2SV_blank>during<S2SV_blank>the<S2SV_blank>pre-flight<S2SV_blank>check\\\\n\" ) ; } if ( test_scheduling == TRUE ) { init_event_queue ( ) ; timing_point ( \"Done<S2SV_blank>initializing<S2SV_blank>event<S2SV_blank>queue\\\\n\" ) ; initialize_retention_data ( config_file ) ; read_initial_state_information ( ) ; timing_point ( \"Retention<S2SV_blank>data<S2SV_blank>and<S2SV_blank>initial<S2SV_blank>state<S2SV_blank>parsed\\\\n\" ) ; init_timing_loop ( ) ; timing_point ( \"Timing<S2SV_blank>loop<S2SV_blank>initialized\\\\n\" ) ; display_scheduling_info ( ) ; } if ( precache_objects ) { result = fcache_objects ( object_precache_file ) ; timing_point ( \"Done<S2SV_blank>precaching<S2SV_blank>objects\\\\n\" ) ; if ( result == OK ) { printf ( \"Object<S2SV_blank>precache<S2SV_blank>file<S2SV_blank>created:\\\\n%s\\\\n\" , object_precache_file ) ; } else { printf ( \"Failed<S2SV_blank>to<S2SV_blank>precache<S2SV_blank>objects<S2SV_blank>to<S2SV_blank>\\'%s\\':<S2SV_blank>%s\\\\n\" , object_precache_file , strerror ( errno ) ) ; } } cleanup ( ) ; timing_point ( \"Exiting\\\\n\" ) ; neb_free_module_list ( ) ; free ( config_file_dir ) ; free ( config_file ) ; exit ( result ) ; } else { if ( strchr ( argv [ 0 ] , '/' ) ) nagios_binary_path = nspath_absolute ( argv [ 0 ] , NULL ) ; else nagios_binary_path = strdup ( argv [ 0 ] ) ; if ( ! nagios_binary_path ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>nagios_binary_path\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( ! ( nagios_iobs = iobroker_create ( ) ) ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>IO<S2SV_blank>broker<S2SV_blank>set:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; exit ( EXIT_FAILURE ) ; } do { wproc_num_workers_spawned = wproc_num_workers_online = 0 ; caught_signal = sigshutdown = FALSE ; sig_id = 0 ; reset_variables ( ) ; timing_point ( \"Variables<S2SV_blank>reset\\\\n\" ) ; nagios_pid = ( int ) getpid ( ) ; result = read_main_config_file ( config_file ) ; if ( result != OK ) { logit ( NSLOG_CONFIG_ERROR , TRUE , \"Error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>process<S2SV_blank>config<S2SV_blank>file<S2SV_blank>\\'%s\\'.<S2SV_blank>Aborting\\\\n\" , config_file ) ; exit ( EXIT_FAILURE ) ; } timing_point ( \"Main<S2SV_blank>config<S2SV_blank>file<S2SV_blank>read\\\\n\" ) ; program_start = time ( NULL ) ; my_free ( mac -> x [ MACRO_PROCESSSTARTTIME ] ) ; asprintf ( & mac -> x [ MACRO_PROCESSSTARTTIME ] , \"%llu\" , ( unsigned long long ) program_start ) ; <S2SV_StartBug> if ( drop_privileges ( nagios_user , nagios_group ) == ERROR ) { <S2SV_EndBug> logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_CONFIG_ERROR , TRUE , \"Failed<S2SV_blank>to<S2SV_blank>drop<S2SV_blank>privileges.<S2SV_blank><S2SV_blank>Aborting.\" ) ; cleanup ( ) ; exit ( ERROR ) ; } if ( test_path_access ( nagios_binary_path , X_OK ) ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>access()<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , nagios_binary_path , strerror ( errno ) ) ; logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>Spawning<S2SV_blank>workers<S2SV_blank>will<S2SV_blank>be<S2SV_blank>impossible.<S2SV_blank>Aborting.\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( test_configured_paths ( ) == ERROR ) { <S2SV_StartBug> exit ( EXIT_FAILURE ) ; <S2SV_EndBug> } if ( daemon_mode == TRUE && sigrestart == FALSE ) { result = daemon_init ( ) ; if ( result == ERROR ) { logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR , TRUE , \"Bailing<S2SV_blank>out<S2SV_blank>due<S2SV_blank>to<S2SV_blank>failure<S2SV_blank>to<S2SV_blank>daemonize.<S2SV_blank>(PID=%d)\" , ( int ) getpid ( ) ) ; cleanup ( ) ; exit ( EXIT_FAILURE ) ; } nagios_pid = ( int ) getpid ( ) ; } logit ( NSLOG_PROCESS_INFO , TRUE , \"Nagios<S2SV_blank>%s<S2SV_blank>starting...<S2SV_blank>(PID=%d)\\\\n\" , PROGRAM_VERSION , ( int ) getpid ( ) ) ; now = time ( NULL ) ; tm = localtime_r ( & now , & tm_s ) ; strftime ( datestring , sizeof ( datestring ) , \"%a<S2SV_blank>%b<S2SV_blank>%d<S2SV_blank>%H:%M:%S<S2SV_blank>%Z<S2SV_blank>%Y\" , tm ) ; logit ( NSLOG_PROCESS_INFO , TRUE , \"Local<S2SV_blank>time<S2SV_blank>is<S2SV_blank>%s\" , datestring ) ; write_log_file_info ( NULL ) ; open_debug_log ( ) ; # ifdef USE_EVENT_BROKER neb_init_modules ( ) ; neb_init_callback_list ( ) ; # endif timing_point ( \"NEB<S2SV_blank>module<S2SV_blank>API<S2SV_blank>initialized\\\\n\" ) ; setup_sighandler ( ) ; if ( qh_init ( qh_socket_path ? qh_socket_path : DEFAULT_QUERY_SOCKET ) != OK ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>query<S2SV_blank>handler.<S2SV_blank>Aborting\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } timing_point ( \"Query<S2SV_blank>handler<S2SV_blank>initialized\\\\n\" ) ; nerd_init ( ) ; timing_point ( \"NERD<S2SV_blank>initialized\\\\n\" ) ; if ( init_workers ( num_check_workers ) < 0 ) { logit ( NSLOG_RUNTIME_ERROR , TRUE , \"Failed<S2SV_blank>to<S2SV_blank>spawn<S2SV_blank>workers.<S2SV_blank>Aborting\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } timing_point ( \"%u<S2SV_blank>workers<S2SV_blank>spawned\\\\n\" , wproc_num_workers_spawned ) ; i = 0 ; while ( i < 50 && wproc_num_workers_online < wproc_num_workers_spawned ) { iobroker_poll ( nagios_iobs , 50 ) ; i ++ ; } timing_point ( \"%u<S2SV_blank>workers<S2SV_blank>connected\\\\n\" , wproc_num_workers_online ) ; set_loadctl_defaults ( ) ; # ifdef USE_EVENT_BROKER if ( neb_load_all_modules ( ) != OK ) { logit ( NSLOG_CONFIG_ERROR , ERROR , \"Error:<S2SV_blank>Module<S2SV_blank>loading<S2SV_blank>failed.<S2SV_blank>Aborting.\\\\n\" ) ; if ( daemon_dumps_core ) neb_unload_all_modules ( NEBMODULE_FORCE_UNLOAD , NEBMODULE_NEB_SHUTDOWN ) ; exit ( EXIT_FAILURE ) ; } timing_point ( \"Modules<S2SV_blank>loaded\\\\n\" ) ; broker_program_state ( NEBTYPE_PROCESS_PRELAUNCH , NEBFLAG_NONE , NEBATTR_NONE , NULL ) ; timing_point ( \"First<S2SV_blank>callback<S2SV_blank>made\\\\n\" ) ; # endif if ( result == OK ) result = read_all_object_data ( config_file ) ; if ( result != OK ) logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_CONFIG_ERROR , TRUE , \"Bailing<S2SV_blank>out<S2SV_blank>due<S2SV_blank>to<S2SV_blank>one<S2SV_blank>or<S2SV_blank>more<S2SV_blank>errors<S2SV_blank>encountered<S2SV_blank>in<S2SV_blank>the<S2SV_blank>configuration<S2SV_blank>files.<S2SV_blank>Run<S2SV_blank>Nagios<S2SV_blank>from<S2SV_blank>the<S2SV_blank>command<S2SV_blank>line<S2SV_blank>with<S2SV_blank>the<S2SV_blank>-v<S2SV_blank>option<S2SV_blank>to<S2SV_blank>verify<S2SV_blank>your<S2SV_blank>config<S2SV_blank>before<S2SV_blank>restarting.<S2SV_blank>(PID=%d)\" , ( int ) getpid ( ) ) ; else { if ( ( result = pre_flight_check ( ) ) != OK ) logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR | NSLOG_VERIFICATION_ERROR , TRUE , \"Bailing<S2SV_blank>out<S2SV_blank>due<S2SV_blank>to<S2SV_blank>errors<S2SV_blank>encountered<S2SV_blank>while<S2SV_blank>running<S2SV_blank>the<S2SV_blank>pre-flight<S2SV_blank>check.<S2SV_blank><S2SV_blank>Run<S2SV_blank>Nagios<S2SV_blank>from<S2SV_blank>the<S2SV_blank>command<S2SV_blank>line<S2SV_blank>with<S2SV_blank>the<S2SV_blank>-v<S2SV_blank>option<S2SV_blank>to<S2SV_blank>verify<S2SV_blank>your<S2SV_blank>config<S2SV_blank>before<S2SV_blank>restarting.<S2SV_blank>(PID=%d)\\\\n\" , ( int ) getpid ( ) ) ; } if ( result != OK ) { if ( sigrestart == TRUE ) { cleanup_status_data ( TRUE ) ; } # ifdef USE_EVENT_BROKER broker_program_state ( NEBTYPE_PROCESS_SHUTDOWN , NEBFLAG_PROCESS_INITIATED , NEBATTR_SHUTDOWN_ABNORMAL , NULL ) ; # endif cleanup ( ) ; exit ( ERROR ) ; } timing_point ( \"Object<S2SV_blank>configuration<S2SV_blank>parsed<S2SV_blank>and<S2SV_blank>understood\\\\n\" ) ; fcache_objects ( object_cache_file ) ; timing_point ( \"Objects<S2SV_blank>cached\\\\n\" ) ; init_event_queue ( ) ; timing_point ( \"Event<S2SV_blank>queue<S2SV_blank>initialized\\\\n\" ) ; # ifdef USE_EVENT_BROKER broker_program_state ( NEBTYPE_PROCESS_START , NEBFLAG_NONE , NEBATTR_NONE , NULL ) ; # endif if ( sigrestart == FALSE ) { initialize_status_data ( config_file ) ; timing_point ( \"Status<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; } initialize_downtime_data ( ) ; timing_point ( \"Downtime<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; initialize_retention_data ( config_file ) ; timing_point ( \"Retention<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; read_initial_state_information ( ) ; timing_point ( \"Initial<S2SV_blank>state<S2SV_blank>information<S2SV_blank>read\\\\n\" ) ; initialize_comment_data ( ) ; timing_point ( \"Comment<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; initialize_performance_data ( config_file ) ; timing_point ( \"Performance<S2SV_blank>data<S2SV_blank>initialized\\\\n\" ) ; init_timing_loop ( ) ; timing_point ( \"Event<S2SV_blank>timing<S2SV_blank>loop<S2SV_blank>initialized\\\\n\" ) ; init_check_stats ( ) ; timing_point ( \"check<S2SV_blank>stats<S2SV_blank>initialized\\\\n\" ) ; check_for_nagios_updates ( FALSE , TRUE ) ; timing_point ( \"Update<S2SV_blank>check<S2SV_blank>concluded\\\\n\" ) ; update_all_status_data ( ) ; timing_point ( \"Status<S2SV_blank>data<S2SV_blank>updated\\\\n\" ) ; log_host_states ( INITIAL_STATES , NULL ) ; log_service_states ( INITIAL_STATES , NULL ) ; timing_point ( \"Initial<S2SV_blank>states<S2SV_blank>logged\\\\n\" ) ; sigrestart = FALSE ; launch_command_file_worker ( ) ; timing_point ( \"Command<S2SV_blank>file<S2SV_blank>worker<S2SV_blank>launched\\\\n\" ) ; # ifdef USE_EVENT_BROKER broker_program_state ( NEBTYPE_PROCESS_EVENTLOOPSTART , NEBFLAG_NONE , NEBATTR_NONE , NULL ) ; # endif event_start = time ( NULL ) ; my_free ( mac -> x [ MACRO_EVENTSTARTTIME ] ) ; asprintf ( & mac -> x [ MACRO_EVENTSTARTTIME ] , \"%llu\" , ( unsigned long long ) event_start ) ; timing_point ( \"Entering<S2SV_blank>event<S2SV_blank>execution<S2SV_blank>loop\\\\n\" ) ; event_execution_loop ( ) ; qh_deinit ( qh_socket_path ? qh_socket_path : DEFAULT_QUERY_SOCKET ) ; if ( caught_signal == TRUE ) { if ( sig_id == SIGHUP ) logit ( NSLOG_PROCESS_INFO , TRUE , \"Caught<S2SV_blank>SIGHUP,<S2SV_blank>restarting...\\\\n\" ) ; } # ifdef USE_EVENT_BROKER broker_program_state ( NEBTYPE_PROCESS_EVENTLOOPEND , NEBFLAG_NONE , NEBATTR_NONE , NULL ) ; if ( sigshutdown == TRUE ) broker_program_state ( NEBTYPE_PROCESS_SHUTDOWN , NEBFLAG_USER_INITIATED , NEBATTR_SHUTDOWN_NORMAL , NULL ) ; else if ( sigrestart == TRUE ) broker_program_state ( NEBTYPE_PROCESS_RESTART , NEBFLAG_USER_INITIATED , NEBATTR_RESTART_NORMAL , NULL ) ; # endif save_state_information ( FALSE ) ; cleanup_retention_data ( ) ; cleanup_performance_data ( ) ; cleanup_downtime_data ( ) ; if ( sigrestart == FALSE ) { cleanup_status_data ( TRUE ) ; } free_worker_memory ( WPROC_FORCE ) ; if ( sigshutdown == TRUE ) { iobroker_destroy ( nagios_iobs , IOBROKER_CLOSE_SOCKETS ) ; nagios_iobs = NULL ; logit ( NSLOG_PROCESS_INFO , TRUE , \"Successfully<S2SV_blank>shutdown...<S2SV_blank>(PID=%d)\\\\n\" , ( int ) getpid ( ) ) ; } cleanup ( ) ; close_debug_log ( ) ; } while ( sigrestart == TRUE && sigshutdown == FALSE ) ; if ( daemon_mode == TRUE ) unlink ( lock_file ) ; my_free ( lock_file ) ; my_free ( config_file ) ; my_free ( config_file_dir ) ; my_free ( nagios_binary_path ) ; } return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( daemon_mode == TRUE && sigrestart == FALSE ) { result = daemon_init ( ) ; if ( result == ERROR ) { logit ( NSLOG_PROCESS_INFO | NSLOG_RUNTIME_ERROR , TRUE , \"Bailing<S2SV_blank>out<S2SV_blank>due<S2SV_blank>to<S2SV_blank>failure<S2SV_blank>to<S2SV_blank>daemonize.<S2SV_blank>(PID=%d)\" , ( int ) getpid ( ) ) ; cleanup ( ) ; exit ( EXIT_FAILURE ) ; } nagios_pid = ( int ) getpid ( ) ; } if ( <S2SV_ModStart> exit ( EXIT_FAILURE <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imageaffinematrixconcat ) { double m1 [ 6 ] ; double m2 [ 6 ] ; double mr [ 6 ] ; zval * * tmp ; zval * z_m1 ; zval * z_m2 ; int i , nelems ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"aa\" , & z_m1 , & z_m2 ) == FAILURE ) { return ; } if ( ( ( nelems = zend_hash_num_elements ( Z_ARRVAL_P ( z_m1 ) ) ) != 6 ) || ( nelems = zend_hash_num_elements ( Z_ARRVAL_P ( z_m2 ) ) ) != 6 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Affine<S2SV_blank>arrays<S2SV_blank>must<S2SV_blank>have<S2SV_blank>six<S2SV_blank>elements\" ) ; RETURN_FALSE ; } for ( i = 0 ; i < 6 ; i ++ ) { if ( zend_hash_index_find ( Z_ARRVAL_P ( z_m1 ) , i , ( void * * ) & tmp ) == SUCCESS ) { switch ( Z_TYPE_PP ( tmp ) ) { case IS_LONG : m1 [ i ] = Z_LVAL_PP ( tmp ) ; break ; case IS_DOUBLE : m1 [ i ] = Z_DVAL_PP ( tmp ) ; break ; case IS_STRING : <S2SV_StartBug> convert_to_double_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> m1 [ i ] = Z_DVAL_PP ( tmp ) ; <S2SV_EndBug> break ; default : php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Invalid<S2SV_blank>type<S2SV_blank>for<S2SV_blank>element<S2SV_blank>%i\" , i ) ; RETURN_FALSE ; } } if ( zend_hash_index_find ( Z_ARRVAL_P ( z_m2 ) , i , ( void * * ) & tmp ) == SUCCESS ) { switch ( Z_TYPE_PP ( tmp ) ) { case IS_LONG : m2 [ i ] = Z_LVAL_PP ( tmp ) ; break ; case IS_DOUBLE : m2 [ i ] = Z_DVAL_PP ( tmp ) ; break ; case IS_STRING : <S2SV_StartBug> convert_to_double_ex ( tmp ) ; <S2SV_EndBug> <S2SV_StartBug> m2 [ i ] = Z_DVAL_PP ( tmp ) ; <S2SV_EndBug> break ; default : php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Invalid<S2SV_blank>type<S2SV_blank>for<S2SV_blank>element<S2SV_blank>%i\" , i ) ; RETURN_FALSE ; } } } if ( gdAffineConcat ( mr , m1 , m2 ) != GD_TRUE ) { RETURN_FALSE ; } array_init ( return_value ) ; for ( i = 0 ; i < 6 ; i ++ ) { add_index_double ( return_value , i , mr [ i ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case IS_STRING : { zval dval ; dval = * * tmp ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; m1 <S2SV_ModStart> i ] = Z_DVAL ( dval ) ; } <S2SV_ModEnd> break ; default <S2SV_ModStart> case IS_STRING : { zval dval ; dval = * * tmp ; zval_copy_ctor ( & dval ) ; convert_to_double ( & dval <S2SV_ModEnd> ) ; m2 <S2SV_ModStart> i ] = Z_DVAL ( dval ) ; } <S2SV_ModEnd> break ; default\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 jas_stream_t * jas_stream_memopen ( char * buf , int bufsize ) { <S2SV_StartBug> jas_stream_t * stream ; <S2SV_EndBug> jas_stream_memobj_t * obj ; JAS_DBGLOG ( 100 , ( \"jas_stream_memopen(%p,<S2SV_blank>%d)\\\\n\" , buf , bufsize ) ) ; <S2SV_StartBug> if ( ! ( stream = jas_stream_create ( ) ) ) { <S2SV_EndBug> return 0 ; } stream -> openmode_ = JAS_STREAM_READ | JAS_STREAM_WRITE | JAS_STREAM_BINARY ; jas_stream_initbuf ( stream , JAS_STREAM_FULLBUF , 0 , 0 ) ; stream -> ops_ = & jas_stream_memops ; if ( ! ( obj = jas_malloc ( sizeof ( jas_stream_memobj_t ) ) ) ) { jas_stream_destroy ( stream ) ; return 0 ; } stream -> obj_ = ( void * ) obj ; obj -> myalloc_ = 0 ; obj -> buf_ = 0 ; if ( bufsize <= 0 ) { <S2SV_StartBug> obj -> bufsize_ = 1024 ; <S2SV_EndBug> obj -> growable_ = 1 ; } else { <S2SV_StartBug> obj -> bufsize_ = bufsize ; <S2SV_EndBug> <S2SV_StartBug> obj -> growable_ = 0 ; <S2SV_EndBug> } if ( buf ) { obj -> buf_ = ( unsigned char * ) buf ; } else { obj -> buf_ = jas_malloc ( obj -> bufsize_ ) ; obj -> myalloc_ = 1 ; } if ( ! obj -> buf_ ) { jas_stream_close ( stream ) ; return 0 ; } JAS_DBGLOG ( 100 , ( \"jas_stream_memopen<S2SV_blank>buffer<S2SV_blank>buf=%p<S2SV_blank>myalloc=%d\\\\n\" , obj -> buf_ , obj -> myalloc_ ) ) ; if ( bufsize > 0 && buf ) { obj -> len_ = bufsize ; } else { obj -> len_ = 0 ; } obj -> pos_ = 0 ; return stream ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bufsize ) { char * new_buf ; size_t new_bufsize <S2SV_ModEnd> ; JAS_DBGLOG ( <S2SV_ModStart> ; if ( bufsize < 0 ) { jas_deprecated ( \"negative<S2SV_blank>buffer<S2SV_blank>size<S2SV_blank>for<S2SV_blank>jas_stream_memopen\" ) ; } if ( buf && bufsize <= 0 ) { jas_eprintf ( \"Invalid<S2SV_blank>use<S2SV_blank>of<S2SV_blank>jas_stream_memopen<S2SV_blank>detected.\\\\n\" ) ; jas_deprecated ( \"A<S2SV_blank>user-provided<S2SV_blank>buffer<S2SV_blank>for<S2SV_blank>\" \"jas_stream_memopen<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>growable.\\\\n\" ) ; } <S2SV_ModEnd> if ( bufsize <S2SV_ModStart> 0 ) { new_bufsize = 0 ; new_buf = 0 <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { new_bufsize <S2SV_ModEnd> = bufsize ; <S2SV_ModStart> = bufsize ; new_buf = buf ; } return jas_stream_memopen2 ( new_buf , new_bufsize ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6657\n\n```\nCWE-264 int sock_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; int val ; int valbool ; struct linger ling ; int ret = 0 ; if ( optname == SO_BINDTODEVICE ) return sock_bindtodevice ( sk , optval , optlen ) ; if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; valbool = val ? 1 : 0 ; lock_sock ( sk ) ; switch ( optname ) { case SO_DEBUG : if ( val && ! capable ( CAP_NET_ADMIN ) ) ret = - EACCES ; else sock_valbool_flag ( sk , SOCK_DBG , valbool ) ; break ; case SO_REUSEADDR : sk -> sk_reuse = ( valbool ? SK_CAN_REUSE : SK_NO_REUSE ) ; break ; case SO_TYPE : case SO_PROTOCOL : case SO_DOMAIN : case SO_ERROR : ret = - ENOPROTOOPT ; break ; case SO_DONTROUTE : sock_valbool_flag ( sk , SOCK_LOCALROUTE , valbool ) ; break ; case SO_BROADCAST : sock_valbool_flag ( sk , SOCK_BROADCAST , valbool ) ; break ; case SO_SNDBUF : val = min_t ( u32 , val , sysctl_wmem_max ) ; set_sndbuf : sk -> sk_userlocks |= SOCK_SNDBUF_LOCK ; sk -> sk_sndbuf = max_t ( u32 , val * 2 , SOCK_MIN_SNDBUF ) ; sk -> sk_write_space ( sk ) ; break ; case SO_SNDBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_sndbuf ; case SO_RCVBUF : val = min_t ( u32 , val , sysctl_rmem_max ) ; set_rcvbuf : sk -> sk_userlocks |= SOCK_RCVBUF_LOCK ; sk -> sk_rcvbuf = max_t ( u32 , val * 2 , SOCK_MIN_RCVBUF ) ; break ; case SO_RCVBUFFORCE : if ( ! capable ( CAP_NET_ADMIN ) ) { ret = - EPERM ; break ; } goto set_rcvbuf ; case SO_KEEPALIVE : # ifdef CONFIG_INET <S2SV_StartBug> if ( sk -> sk_protocol == IPPROTO_TCP ) <S2SV_EndBug> tcp_set_keepalive ( sk , valbool ) ; # endif sock_valbool_flag ( sk , SOCK_KEEPOPEN , valbool ) ; break ; case SO_OOBINLINE : sock_valbool_flag ( sk , SOCK_URGINLINE , valbool ) ; break ; case SO_NO_CHECK : sk -> sk_no_check = valbool ; break ; case SO_PRIORITY : if ( ( val >= 0 && val <= 6 ) || capable ( CAP_NET_ADMIN ) ) sk -> sk_priority = val ; else ret = - EPERM ; break ; case SO_LINGER : if ( optlen < sizeof ( ling ) ) { ret = - EINVAL ; break ; } if ( copy_from_user ( & ling , optval , sizeof ( ling ) ) ) { ret = - EFAULT ; break ; } if ( ! ling . l_onoff ) sock_reset_flag ( sk , SOCK_LINGER ) ; else { # if ( BITS_PER_LONG == 32 ) if ( ( unsigned int ) ling . l_linger >= MAX_SCHEDULE_TIMEOUT / HZ ) sk -> sk_lingertime = MAX_SCHEDULE_TIMEOUT ; else # endif sk -> sk_lingertime = ( unsigned int ) ling . l_linger * HZ ; sock_set_flag ( sk , SOCK_LINGER ) ; } break ; case SO_BSDCOMPAT : sock_warn_obsolete_bsdism ( \"setsockopt\" ) ; break ; case SO_PASSCRED : if ( valbool ) set_bit ( SOCK_PASSCRED , & sock -> flags ) ; else clear_bit ( SOCK_PASSCRED , & sock -> flags ) ; break ; case SO_TIMESTAMP : case SO_TIMESTAMPNS : if ( valbool ) { if ( optname == SO_TIMESTAMP ) sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; else sock_set_flag ( sk , SOCK_RCVTSTAMPNS ) ; sock_set_flag ( sk , SOCK_RCVTSTAMP ) ; sock_enable_timestamp ( sk , SOCK_TIMESTAMP ) ; } else { sock_reset_flag ( sk , SOCK_RCVTSTAMP ) ; sock_reset_flag ( sk , SOCK_RCVTSTAMPNS ) ; } break ; case SO_TIMESTAMPING : if ( val & ~ SOF_TIMESTAMPING_MASK ) { ret = - EINVAL ; break ; } sock_valbool_flag ( sk , SOCK_TIMESTAMPING_TX_HARDWARE , val & SOF_TIMESTAMPING_TX_HARDWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_TX_SOFTWARE , val & SOF_TIMESTAMPING_TX_SOFTWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_RX_HARDWARE , val & SOF_TIMESTAMPING_RX_HARDWARE ) ; if ( val & SOF_TIMESTAMPING_RX_SOFTWARE ) sock_enable_timestamp ( sk , SOCK_TIMESTAMPING_RX_SOFTWARE ) ; else sock_disable_timestamp ( sk , ( 1UL << SOCK_TIMESTAMPING_RX_SOFTWARE ) ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_SOFTWARE , val & SOF_TIMESTAMPING_SOFTWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_SYS_HARDWARE , val & SOF_TIMESTAMPING_SYS_HARDWARE ) ; sock_valbool_flag ( sk , SOCK_TIMESTAMPING_RAW_HARDWARE , val & SOF_TIMESTAMPING_RAW_HARDWARE ) ; break ; case SO_RCVLOWAT : if ( val < 0 ) val = INT_MAX ; sk -> sk_rcvlowat = val ? : 1 ; break ; case SO_RCVTIMEO : ret = sock_set_timeout ( & sk -> sk_rcvtimeo , optval , optlen ) ; break ; case SO_SNDTIMEO : ret = sock_set_timeout ( & sk -> sk_sndtimeo , optval , optlen ) ; break ; case SO_ATTACH_FILTER : ret = - EINVAL ; if ( optlen == sizeof ( struct sock_fprog ) ) { struct sock_fprog fprog ; ret = - EFAULT ; if ( copy_from_user ( & fprog , optval , sizeof ( fprog ) ) ) break ; ret = sk_attach_filter ( & fprog , sk ) ; } break ; case SO_DETACH_FILTER : ret = sk_detach_filter ( sk ) ; break ; case SO_PASSSEC : if ( valbool ) set_bit ( SOCK_PASSSEC , & sock -> flags ) ; else clear_bit ( SOCK_PASSSEC , & sock -> flags ) ; break ; case SO_MARK : if ( ! capable ( CAP_NET_ADMIN ) ) ret = - EPERM ; else sk -> sk_mark = val ; break ; case SO_RXQ_OVFL : sock_valbool_flag ( sk , SOCK_RXQ_OVFL , valbool ) ; break ; case SO_WIFI_STATUS : sock_valbool_flag ( sk , SOCK_WIFI_STATUS , valbool ) ; break ; case SO_PEEK_OFF : if ( sock -> ops -> set_peek_off ) sock -> ops -> set_peek_off ( sk , val ) ; else ret = - EOPNOTSUPP ; break ; case SO_NOFCS : sock_valbool_flag ( sk , SOCK_NOFCS , valbool ) ; break ; default : ret = - ENOPROTOOPT ; break ; } release_sock ( sk ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk_protocol == IPPROTO_TCP && sk -> sk_type == SOCK_STREAM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-200 static __net_init int setup_net ( struct net * net , struct user_namespace * user_ns ) { const struct pernet_operations * ops , * saved_ops ; int error = 0 ; LIST_HEAD ( net_exit_list ) ; refcount_set ( & net -> count , 1 ) ; refcount_set ( & net -> passive , 1 ) ; <S2SV_StartBug> net -> dev_base_seq = 1 ; <S2SV_EndBug> net -> user_ns = user_ns ; idr_init ( & net -> netns_ids ) ; spin_lock_init ( & net -> nsid_lock ) ; mutex_init ( & net -> ipv4 . ra_mutex ) ; list_for_each_entry ( ops , & pernet_list , list ) { error = ops_init ( ops , net ) ; if ( error < 0 ) goto out_undo ; } down_write ( & net_rwsem ) ; list_add_tail_rcu ( & net -> list , & net_namespace_list ) ; up_write ( & net_rwsem ) ; out : return error ; out_undo : list_add ( & net -> exit_list , & net_exit_list ) ; saved_ops = ops ; list_for_each_entry_continue_reverse ( ops , & pernet_list , list ) ops_exit_list ( ops , & net_exit_list ) ; ops = saved_ops ; list_for_each_entry_continue_reverse ( ops , & pernet_list , list ) ops_free_list ( ops , & net_exit_list ) ; rcu_barrier ( ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; get_random_bytes ( & net -> hash_mix , sizeof ( u32 ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 SYSCALL_DEFINE1 ( timer_getoverrun , timer_t , timer_id ) { struct k_itimer * timr ; int overrun ; unsigned long flags ; timr = lock_timer ( timer_id , & flags ) ; if ( ! timr ) return - EINVAL ; <S2SV_StartBug> overrun = timr -> it_overrun_last ; <S2SV_EndBug> unlock_timer ( timr , flags ) ; return overrun ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; overrun = timer_overrun_to_int ( timr , 0 ) <S2SV_ModEnd> ; unlock_timer (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13039\n\n```\nCWE-125 static const u_char * ikev1_t_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto , int depth _U_ ) { const struct ikev1_pl_t * p ; struct ikev1_pl_t t ; const u_char * cp ; const char * idstr ; const struct attrmap * map ; size_t nmap ; const u_char * ep2 ; ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_T ) ) ) ; p = ( const struct ikev1_pl_t * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & t , ext , sizeof ( t ) ) ; switch ( proto ) { case 1 : idstr = STR_OR_ID ( t . t_id , ikev1_p_map ) ; map = oakley_t_map ; nmap = sizeof ( oakley_t_map ) / sizeof ( oakley_t_map [ 0 ] ) ; break ; case 2 : idstr = STR_OR_ID ( t . t_id , ah_p_map ) ; map = ipsec_t_map ; nmap = sizeof ( ipsec_t_map ) / sizeof ( ipsec_t_map [ 0 ] ) ; break ; case 3 : idstr = STR_OR_ID ( t . t_id , esp_p_map ) ; map = ipsec_t_map ; nmap = sizeof ( ipsec_t_map ) / sizeof ( ipsec_t_map [ 0 ] ) ; break ; case 4 : idstr = STR_OR_ID ( t . t_id , ipcomp_p_map ) ; map = ipsec_t_map ; nmap = sizeof ( ipsec_t_map ) / sizeof ( ipsec_t_map [ 0 ] ) ; break ; default : idstr = NULL ; map = NULL ; nmap = 0 ; break ; } if ( idstr ) ND_PRINT ( ( ndo , \"<S2SV_blank>#%d<S2SV_blank>id=%s<S2SV_blank>\" , t . t_no , idstr ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>#%d<S2SV_blank>id=%d<S2SV_blank>\" , t . t_no , t . t_id ) ) ; cp = ( const u_char * ) ( p + 1 ) ; ep2 = ( const u_char * ) p + item_len ; while ( cp < ep && cp < ep2 ) { <S2SV_StartBug> if ( map && nmap ) { <S2SV_EndBug> <S2SV_StartBug> cp = ikev1_attrmap_print ( ndo , cp , ( ep < ep2 ) ? ep : ep2 , <S2SV_EndBug> map , nmap ) ; } else cp = ikev1_attr_print ( ndo , cp , ( ep < ep2 ) ? ep : ep2 ) ; } if ( ep < ep2 ) ND_PRINT ( ( ndo , \"...\" ) ) ; return cp ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_T ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && nmap ) <S2SV_ModEnd> cp = ikev1_attrmap_print <S2SV_ModStart> , cp , ep2 , map , nmap ) ; else cp = ikev1_attr_print ( ndo , cp , ep2 ) ; if ( cp == NULL ) goto trunc ; } if <S2SV_ModStart> < ep2 ) <S2SV_ModEnd> ND_PRINT ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20182\n\n```\nCWE-119 static RD_BOOL mcs_parse_domain_params ( STREAM s ) { <S2SV_StartBug> int length ; <S2SV_EndBug> <S2SV_StartBug> ber_parse_header ( s , MCS_TAG_DOMAIN_PARAMS , & length ) ; <S2SV_EndBug> in_uint8s ( s , length ) ; return s_check ( s ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { uint32 length ; struct stream packet = * s <S2SV_ModEnd> ; ber_parse_header ( <S2SV_ModStart> length ) ; if ( ! s_check_rem ( s , length ) ) { rdp_protocol_error ( \"mcs_parse_domain_params(),<S2SV_blank>consume<S2SV_blank>domain<S2SV_blank>params<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-862(缺少授权)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5985\n\n```\nCWE-862 static int rename_in_ns ( int pid , char * oldname , char * * newnamep ) { <S2SV_StartBug> int fd = - 1 , ofd = - 1 , ret , ifindex = - 1 ; <S2SV_EndBug> bool grab_newname = false ; ofd = lxc_preserve_ns ( getpid ( ) , \"net\" ) ; if ( ofd < 0 ) { <S2SV_StartBug> fprintf ( stderr , \"Failed<S2SV_blank>opening<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>path<S2SV_blank>for<S2SV_blank>\\'%d\\'.\" , getpid ( ) ) ; <S2SV_EndBug> <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } fd = lxc_preserve_ns ( pid , \"net\" ) ; if ( fd < 0 ) { <S2SV_StartBug> fprintf ( stderr , \"Failed<S2SV_blank>opening<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>path<S2SV_blank>for<S2SV_blank>\\'%d\\'.\" , pid ) ; <S2SV_EndBug> <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } <S2SV_StartBug> if ( setns ( fd , 0 ) < 0 ) { <S2SV_EndBug> fprintf ( stderr , \"setns<S2SV_blank>to<S2SV_blank>container<S2SV_blank>network<S2SV_blank>namespace\\\\n\" ) ; goto out_err ; } <S2SV_StartBug> close ( fd ) ; fd = - 1 ; <S2SV_EndBug> if ( ! * newnamep ) { grab_newname = true ; * newnamep = VETH_DEF_NAME ; <S2SV_StartBug> if ( ! ( ifindex = if_nametoindex ( oldname ) ) ) { <S2SV_EndBug> fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>netdev<S2SV_blank>index\\\\n\" ) ; goto out_err ; } } <S2SV_StartBug> if ( ( ret = lxc_netdev_rename_by_name ( oldname , * newnamep ) ) < 0 ) { <S2SV_EndBug> fprintf ( stderr , \"Error<S2SV_blank>%d<S2SV_blank>renaming<S2SV_blank>netdev<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>container\\\\n\" , ret , oldname , * newnamep ) ; goto out_err ; } if ( grab_newname ) { <S2SV_StartBug> char ifname [ IFNAMSIZ ] , * namep = ifname ; <S2SV_EndBug> if ( ! if_indextoname ( ifindex , namep ) ) { <S2SV_StartBug> fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>new<S2SV_blank>netdev<S2SV_blank>name\\\\n\" ) ; <S2SV_EndBug> goto out_err ; } * newnamep = strdup ( namep ) ; if ( ! * newnamep ) <S2SV_StartBug> goto out_err ; <S2SV_EndBug> } <S2SV_StartBug> if ( setns ( ofd , 0 ) < 0 ) { <S2SV_EndBug> fprintf ( stderr , \"Error<S2SV_blank>returning<S2SV_blank>to<S2SV_blank>original<S2SV_blank>netns\\\\n\" ) ; close ( ofd ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } close ( ofd ) ; return 0 ; out_err : if ( ofd >= 0 ) close ( ofd ) ; if ( setns ( ofd , 0 ) < 0 ) fprintf ( stderr , \"Error<S2SV_blank>returning<S2SV_blank>to<S2SV_blank>original<S2SV_blank>network<S2SV_blank>namespace\\\\n\" ) ; if ( fd >= 0 ) close ( fd ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> newnamep ) { uid_t ruid , suid , euid ; int fret = - 1 ; int fd = - 1 , ifindex <S2SV_ModEnd> = - 1 <S2SV_ModStart> 1 , ret <S2SV_ModEnd> ; bool grab_newname <S2SV_ModStart> 0 ) { usernic_error ( <S2SV_ModEnd> \"Failed<S2SV_blank>opening<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>path<S2SV_blank>for<S2SV_blank>\\'%d\\'.\" , getpid <S2SV_ModStart> ) ; return fret <S2SV_ModEnd> ; } fd <S2SV_ModStart> 0 ) { usernic_error ( <S2SV_ModEnd> \"Failed<S2SV_blank>opening<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>path<S2SV_blank>for<S2SV_blank>\\'%d\\'.\" , pid <S2SV_ModStart> pid ) ; goto do_partial_cleanup ; } ret = getresuid ( & ruid , & euid , & suid ) ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>real,<S2SV_blank>effective,<S2SV_blank>and<S2SV_blank>saved<S2SV_blank>\" \"user<S2SV_blank>IDs:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; goto do_partial_cleanup ; } ret = <S2SV_ModEnd> setns ( fd <S2SV_ModStart> ( fd , CLONE_NEWNET ) ; <S2SV_ModEnd> close ( fd <S2SV_ModStart> fd ) ; fd = - 1 ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>setns()<S2SV_blank>to<S2SV_blank>the<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>of<S2SV_blank>\" \"the<S2SV_blank>container<S2SV_blank>with<S2SV_blank>PID<S2SV_blank>%d:<S2SV_blank>%s.\\\\n\" , pid , strerror ( errno ) ) ; goto do_partial_cleanup ; } ret = setresuid ( ruid , ruid , 0 ) ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>drop<S2SV_blank>privilege<S2SV_blank>by<S2SV_blank>setting<S2SV_blank>effective<S2SV_blank>\" \"user<S2SV_blank>id<S2SV_blank>and<S2SV_blank>real<S2SV_blank>user<S2SV_blank>id<S2SV_blank>to<S2SV_blank>%d,<S2SV_blank>and<S2SV_blank>saved<S2SV_blank>user<S2SV_blank>\" \"ID<S2SV_blank>to<S2SV_blank>0:<S2SV_blank>%s.\\\\n\" , ruid , strerror ( errno ) ) ; goto do_full_cleanup ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> = VETH_DEF_NAME ; ifindex = if_nametoindex ( oldname ) ; <S2SV_ModStart> if ( ! ifindex ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>netdev<S2SV_blank>index:<S2SV_blank>%s.\\\\n\" , strerror ( errno ) ) ; goto do_full_cleanup ; } } ret = lxc_netdev_rename_by_name ( oldname , * newnamep ) ; if ( ret < 0 ) { usernic_error ( \"Error<S2SV_blank>%d<S2SV_blank>renaming<S2SV_blank>netdev<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>container.\\\\n\" , ret , <S2SV_ModEnd> oldname , * <S2SV_ModStart> * newnamep ) ; goto do_full_cleanup <S2SV_ModEnd> ; } if <S2SV_ModStart> [ IFNAMSIZ ] ; char <S2SV_ModEnd> * namep = <S2SV_ModStart> ) ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>new<S2SV_blank>netdev<S2SV_blank>name:<S2SV_blank>%s.\\\\n\" , strerror ( errno ) ) ; goto do_full_cleanup <S2SV_ModEnd> ; } * <S2SV_ModStart> newnamep ) goto do_full_cleanup ; } fret = 0 ; do_full_cleanup : ret = setresuid ( ruid , euid , suid ) ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>restore<S2SV_blank>privilege<S2SV_blank>by<S2SV_blank>setting<S2SV_blank>effective<S2SV_blank>\" \"user<S2SV_blank>id<S2SV_blank>to<S2SV_blank>%d,<S2SV_blank>real<S2SV_blank>user<S2SV_blank>id<S2SV_blank>to<S2SV_blank>%d,<S2SV_blank>and<S2SV_blank>saved<S2SV_blank>user<S2SV_blank>\" \"ID<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>%s.\\\\n\" , ruid , euid , suid , strerror ( errno ) ) ; fret = - 1 ; } ret = <S2SV_ModEnd> setns ( ofd <S2SV_ModStart> ( ofd , CLONE_NEWNET ) ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>setns()<S2SV_blank>to<S2SV_blank>original<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>\" \"of<S2SV_blank>PID<S2SV_blank>%d:<S2SV_blank>%s.\\\\n\" , ofd , strerror ( errno ) ) ; fret = - 1 ; } do_partial_cleanup : if ( fd >= 0 ) close ( fd ) ; close ( <S2SV_ModEnd> ofd ) ; <S2SV_ModStart> ) ; return fret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0393\n\n```\nCWE-000 void vp8_decoder_remove_threads ( VP8D_COMP * pbi ) { if ( pbi -> b_multithreaded_rd ) { int i ; pbi -> b_multithreaded_rd = 0 ; <S2SV_StartBug> for ( i = 0 ; i < pbi -> allocated_decoding_thread_count ; i ++ ) <S2SV_EndBug> { sem_post ( & pbi -> h_event_start_decoding [ i ] ) ; pthread_join ( pbi -> h_decoding_thread [ i ] , NULL ) ; } <S2SV_StartBug> for ( i = 0 ; i < pbi -> allocated_decoding_thread_count ; i ++ ) <S2SV_EndBug> { sem_destroy ( & pbi -> h_event_start_decoding [ i ] ) ; } sem_destroy ( & pbi -> h_event_end_decoding ) ; vpx_free ( pbi -> h_decoding_thread ) ; pbi -> h_decoding_thread = NULL ; vpx_free ( pbi -> h_event_start_decoding ) ; pbi -> h_event_start_decoding = NULL ; vpx_free ( pbi -> mb_row_di ) ; pbi -> mb_row_di = NULL ; vpx_free ( pbi -> de_thread_data ) ; pbi -> de_thread_data = NULL ; <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> allocated_decoding_thread_count ; ++ i <S2SV_ModEnd> ) { sem_post <S2SV_ModStart> -> allocated_decoding_thread_count ; ++ i <S2SV_ModEnd> ) { sem_destroy <S2SV_ModStart> = NULL ; vp8mt_de_alloc_temp_buffers ( pbi , pbi -> common . mb_rows ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7144\n\n```\nCWE-287 CMD_FUNC ( m_authenticate ) { aClient * agent_p = NULL ; if ( ! SASL_SERVER || ! MyConnect ( sptr ) || BadPtr ( parv [ 1 ] ) || ! CHECKPROTO ( sptr , PROTO_SASL ) ) return 0 ; if ( sptr -> local -> sasl_complete ) { sendto_one ( sptr , err_str ( ERR_SASLALREADY ) , me . name , BadPtr ( sptr -> name ) ? \"*\" : sptr -> name ) ; return 0 ; } <S2SV_StartBug> if ( strlen ( parv [ 1 ] ) > 400 ) <S2SV_EndBug> { sendto_one ( sptr , err_str ( ERR_SASLTOOLONG ) , me . name , BadPtr ( sptr -> name ) ? \"*\" : sptr -> name ) ; return 0 ; } if ( * sptr -> local -> sasl_agent ) agent_p = find_client ( sptr -> local -> sasl_agent , NULL ) ; if ( agent_p == NULL ) { char * addr = BadPtr ( sptr -> ip ) ? \"0\" : sptr -> ip ; char * certfp = moddata_client_get ( sptr , \"certfp\" ) ; sendto_server ( NULL , 0 , 0 , \":%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>H<S2SV_blank>%s<S2SV_blank>%s\" , me . name , SASL_SERVER , encode_puid ( sptr ) , addr , addr ) ; if ( certfp ) sendto_server ( NULL , 0 , 0 , \":%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>S<S2SV_blank>%s<S2SV_blank>%s\" , me . name , SASL_SERVER , encode_puid ( sptr ) , parv [ 1 ] , certfp ) ; else sendto_server ( NULL , 0 , 0 , \":%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>S<S2SV_blank>%s\" , me . name , SASL_SERVER , encode_puid ( sptr ) , parv [ 1 ] ) ; } else sendto_server ( NULL , 0 , 0 , \":%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>C<S2SV_blank>%s\" , me . name , AGENT_SID ( agent_p ) , encode_puid ( sptr ) , parv [ 1 ] ) ; sptr -> local -> sasl_out ++ ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ( parv [ 1 ] [ 0 ] == ':' ) || strchr ( parv [ 1 ] , '<S2SV_blank>' ) ) { sendto_one ( sptr , err_str ( ERR_CANNOTDOCOMMAND ) , me . name , \"*\" , \"AUTHENTICATE\" , \"Invalid<S2SV_blank>parameter\" ) ; return 0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t mqttSnClientSubscribe ( MqttSnClientContext * context , const char_t * topicName , MqttSnQosLevel qos ) { error_t error ; systime_t time ; if ( context == NULL || topicName == NULL ) return ERROR_INVALID_PARAMETER ; error = NO_ERROR ; while ( ! error ) { time = osGetSystemTime ( ) ; if ( context -> state == MQTT_SN_CLIENT_STATE_ACTIVE ) { mqttSnClientGenerateMessageId ( context ) ; context -> startTime = time ; error = mqttSnClientSendSubscribe ( context , topicName , qos ) ; } else if ( context -> state == MQTT_SN_CLIENT_STATE_SENDING_REQ ) { if ( timeCompare ( time , context -> startTime + context -> timeout ) >= 0 ) { context -> state = MQTT_SN_CLIENT_STATE_DISCONNECTING ; error = ERROR_TIMEOUT ; } else if ( timeCompare ( time , context -> retransmitStartTime + MQTT_SN_CLIENT_RETRY_TIMEOUT ) >= 0 ) { error = mqttSnClientSendSubscribe ( context , topicName , qos ) ; } else { error = mqttSnClientProcessEvents ( context , MQTT_SN_CLIENT_TICK_INTERVAL ) ; } } else if ( context -> state == MQTT_SN_CLIENT_STATE_RESP_RECEIVED ) { context -> state = MQTT_SN_CLIENT_STATE_ACTIVE ; if ( context -> msgType == MQTT_SN_MSG_TYPE_SUBACK ) { if ( context -> returnCode == MQTT_SN_RETURN_CODE_ACCEPTED ) { <S2SV_StartBug> if ( strchr ( topicName , '#' ) == NULL && strchr ( topicName , '+' ) == NULL ) <S2SV_EndBug> { error = mqttSnClientAddTopic ( context , topicName , context -> topicId ) ; } break ; } else { error = ERROR_REQUEST_REJECTED ; } } else { error = ERROR_UNEXPECTED_RESPONSE ; } } else { error = ERROR_NOT_CONNECTED ; } } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( osStrchr <S2SV_ModEnd> ( topicName , <S2SV_ModStart> == NULL && osStrchr <S2SV_ModEnd> ( topicName ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6198\n\n```\nCWE-284 int vfs_open ( const struct path * path , struct file * file , const struct cred * cred ) { <S2SV_StartBug> struct dentry * dentry = path -> dentry ; <S2SV_EndBug> <S2SV_StartBug> struct inode * inode = dentry -> d_inode ; <S2SV_EndBug> file -> f_path = * path ; if ( dentry -> d_flags & DCACHE_OP_SELECT_INODE ) { inode = dentry -> d_op -> d_select_inode ( dentry , file -> f_flags ) ; if ( IS_ERR ( inode ) ) return PTR_ERR ( inode ) ; <S2SV_StartBug> } <S2SV_EndBug> return do_dentry_open ( file , inode , NULL , cred ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct <S2SV_ModEnd> inode * inode <S2SV_ModStart> * inode = vfs_select_inode ( path -> <S2SV_ModEnd> dentry , file <S2SV_ModStart> inode ) ; file -> f_path = * path ; <S2SV_ModEnd> return do_dentry_open (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5547\n\n```\nCWE-119 static ssize_t k90_show_macro_mode ( struct device * dev , struct device_attribute * attr , char * buf ) { int ret ; struct usb_interface * usbif = to_usb_interface ( dev -> parent ) ; struct usb_device * usbdev = interface_to_usbdev ( usbif ) ; const char * macro_mode ; <S2SV_StartBug> char data [ 8 ] ; <S2SV_EndBug> ret = usb_control_msg ( usbdev , usb_rcvctrlpipe ( usbdev , 0 ) , K90_REQUEST_GET_MODE , USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE , 0 , 0 , data , 2 , USB_CTRL_SET_TIMEOUT ) ; if ( ret < 0 ) { dev_warn ( dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>K90<S2SV_blank>initial<S2SV_blank>mode<S2SV_blank>(error<S2SV_blank>%d).\\\\n\" , ret ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> switch ( data [ 0 ] ) { case K90_MACRO_MODE_HW : macro_mode = \"HW\" ; break ; case K90_MACRO_MODE_SW : macro_mode = \"SW\" ; break ; default : dev_warn ( dev , \"K90<S2SV_blank>in<S2SV_blank>unknown<S2SV_blank>mode:<S2SV_blank>%02hhx.\\\\n\" , data [ 0 ] ) ; <S2SV_StartBug> return - EIO ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return snprintf ( buf , PAGE_SIZE , \"%s\\\\n\" , macro_mode ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> macro_mode ; char * data ; data = kmalloc ( 2 , GFP_KERNEL ) ; if ( ! data ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> ret ) ; ret = <S2SV_ModEnd> - EIO ; <S2SV_ModStart> - EIO ; goto out ; <S2SV_ModStart> ] ) ; ret = <S2SV_ModEnd> - EIO ; <S2SV_ModStart> - EIO ; goto out ; } ret = snprintf ( buf , PAGE_SIZE , \"%s\\\\n\" , macro_mode ) ; out : kfree ( data ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5551\n\n```\nCWE-000 int simple_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int error ; if ( type == ACL_TYPE_ACCESS ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> <S2SV_StartBug> if ( error < 0 ) <S2SV_EndBug> return 0 ; if ( error == 0 ) acl = NULL ; } inode -> i_ctime = current_time ( inode ) ; set_cached_acl ( inode , type , acl ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl <S2SV_ModStart> if ( error ) return error <S2SV_ModEnd> ; } inode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16658\n\n```\nCWE-200 static int cdrom_ioctl_drive_status ( struct cdrom_device_info * cdi , unsigned long arg ) { cd_dbg ( CD_DO_IOCTL , \"entering<S2SV_blank>CDROM_DRIVE_STATUS\\\\n\" ) ; if ( ! ( cdi -> ops -> capability & CDC_DRIVE_STATUS ) ) return - ENOSYS ; if ( ! CDROM_CAN ( CDC_SELECT_DISC ) || ( arg == CDSL_CURRENT || arg == CDSL_NONE ) ) return cdi -> ops -> drive_status ( cdi , CDSL_CURRENT ) ; <S2SV_StartBug> if ( ( ( int ) arg >= cdi -> capacity ) ) <S2SV_EndBug> return - EINVAL ; return cdrom_slot_status ( cdi , arg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> arg >= cdi <S2SV_ModStart> cdi -> capacity <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-754(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18690\n\n```\nCWE-754 STATIC int xfs_attr_shortform_addname ( xfs_da_args_t * args ) { int newsize , forkoff , retval ; trace_xfs_attr_sf_addname ( args ) ; retval = xfs_attr_shortform_lookup ( args ) ; if ( ( args -> flags & ATTR_REPLACE ) && ( retval == - ENOATTR ) ) { return retval ; } else if ( retval == - EEXIST ) { if ( args -> flags & ATTR_CREATE ) return retval ; retval = xfs_attr_shortform_remove ( args ) ; <S2SV_StartBug> ASSERT ( retval == 0 ) ; <S2SV_EndBug> } if ( args -> namelen >= XFS_ATTR_SF_ENTSIZE_MAX || args -> valuelen >= XFS_ATTR_SF_ENTSIZE_MAX ) return - ENOSPC ; newsize = XFS_ATTR_SF_TOTSIZE ( args -> dp ) ; newsize += XFS_ATTR_SF_ENTSIZE_BYNAME ( args -> namelen , args -> valuelen ) ; forkoff = xfs_attr_shortform_bytesfit ( args -> dp , newsize ) ; if ( ! forkoff ) return - ENOSPC ; xfs_attr_shortform_add ( args , forkoff ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> args ) ; if ( retval ) return retval ; args -> flags &= ~ ATTR_REPLACE <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11447\n\n```\nCWE-772 static Image * ReadSCREENSHOTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = ( Image * ) NULL ; # if defined ( MAGICKCORE_WINGDI32_DELEGATE ) { BITMAPINFO bmi ; DISPLAY_DEVICE device ; HBITMAP bitmap , bitmapOld ; HDC bitmapDC , hDC ; Image * screen ; int i ; MagickBooleanType status ; register Quantum * q ; register ssize_t x ; RGBTRIPLE * p ; ssize_t y ; assert ( image_info != ( const ImageInfo * ) NULL ) ; i = 0 ; device . cb = sizeof ( device ) ; image = ( Image * ) NULL ; while ( EnumDisplayDevices ( NULL , i , & device , 0 ) && ++ i ) { if ( ( device . StateFlags & DISPLAY_DEVICE_ACTIVE ) != DISPLAY_DEVICE_ACTIVE ) continue ; hDC = CreateDC ( device . DeviceName , device . DeviceName , NULL , NULL ) ; if ( hDC == ( HDC ) NULL ) ThrowReaderException ( CoderError , \"UnableToCreateDC\" ) ; screen = AcquireImage ( image_info , exception ) ; screen -> columns = ( size_t ) GetDeviceCaps ( hDC , HORZRES ) ; screen -> rows = ( size_t ) GetDeviceCaps ( hDC , VERTRES ) ; screen -> storage_class = DirectClass ; <S2SV_StartBug> status = SetImageExtent ( screen , screen -> columns , screen -> rows , exception ) ; <S2SV_EndBug> if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; <S2SV_StartBug> if ( image == ( Image * ) NULL ) <S2SV_EndBug> image = screen ; else AppendImageToList ( & image , screen ) ; bitmapDC = CreateCompatibleDC ( hDC ) ; if ( bitmapDC == ( HDC ) NULL ) { DeleteDC ( hDC ) ; ThrowReaderException ( CoderError , \"UnableToCreateDC\" ) ; } ( void ) ResetMagickMemory ( & bmi , 0 , sizeof ( BITMAPINFO ) ) ; bmi . bmiHeader . biSize = sizeof ( BITMAPINFOHEADER ) ; bmi . bmiHeader . biWidth = ( LONG ) screen -> columns ; bmi . bmiHeader . biHeight = ( - 1 ) * ( LONG ) screen -> rows ; bmi . bmiHeader . biPlanes = 1 ; bmi . bmiHeader . biBitCount = 24 ; bmi . bmiHeader . biCompression = BI_RGB ; bitmap = CreateDIBSection ( hDC , & bmi , DIB_RGB_COLORS , ( void * * ) & p , NULL , 0 ) ; if ( bitmap == ( HBITMAP ) NULL ) { DeleteDC ( hDC ) ; DeleteDC ( bitmapDC ) ; ThrowReaderException ( CoderError , \"UnableToCreateBitmap\" ) ; } bitmapOld = ( HBITMAP ) SelectObject ( bitmapDC , bitmap ) ; if ( bitmapOld == ( HBITMAP ) NULL ) { DeleteDC ( hDC ) ; DeleteDC ( bitmapDC ) ; DeleteObject ( bitmap ) ; ThrowReaderException ( CoderError , \"UnableToCreateBitmap\" ) ; } BitBlt ( bitmapDC , 0 , 0 , ( int ) screen -> columns , ( int ) screen -> rows , hDC , 0 , 0 , SRCCOPY ) ; ( void ) SelectObject ( bitmapDC , bitmapOld ) ; for ( y = 0 ; y < ( ssize_t ) screen -> rows ; y ++ ) { q = QueueAuthenticPixels ( screen , 0 , y , screen -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) screen -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( p -> rgbtRed ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( p -> rgbtGreen ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( p -> rgbtBlue ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( screen , exception ) == MagickFalse ) break ; } DeleteDC ( hDC ) ; DeleteDC ( bitmapDC ) ; DeleteObject ( bitmap ) ; } } # elif defined ( MAGICKCORE_X11_DELEGATE ) { const char * option ; XImportInfo ximage_info ; XGetImportInfo ( & ximage_info ) ; option = GetImageOption ( image_info , \"x:screen\" ) ; if ( option != ( const char * ) NULL ) ximage_info . screen = IsStringTrue ( option ) ; option = GetImageOption ( image_info , \"x:silent\" ) ; if ( option != ( const char * ) NULL ) ximage_info . silent = IsStringTrue ( option ) ; image = XImportImage ( image_info , & ximage_info , exception ) ; } # endif return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = DirectClass ; if ( image == ( Image * ) NULL ) image = screen ; else AppendImageToList ( & image , screen ) ; <S2SV_ModStart> ) ) ; <S2SV_ModEnd> bitmapDC = CreateCompatibleDC\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 <S2SV_StartBug> static void <S2SV_EndBug> pci_msix_table_init ( struct pci_vdev * dev , int table_entries ) { <S2SV_StartBug> int i , table_size ; <S2SV_EndBug> assert ( table_entries > 0 ) ; assert ( table_entries <= MAX_MSIX_TABLE_ENTRIES ) ; table_size = table_entries * MSIX_TABLE_ENTRY_SIZE ; dev -> msix . table = calloc ( 1 , table_size ) ; <S2SV_StartBug> assert ( dev -> msix . table != NULL ) ; <S2SV_EndBug> for ( i = 0 ; i < table_entries ; i ++ ) dev -> msix . table [ i ] . vector_control |= PCIM_MSIX_VCTRL_MASK ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> pci_msix_table_init ( struct <S2SV_ModStart> i , table_size <S2SV_ModEnd> ; table_size = <S2SV_ModStart> table_size ) ; if ( ! <S2SV_ModEnd> dev -> msix <S2SV_ModStart> msix . table ) { pr_err ( \"%s:<S2SV_blank>Cannot<S2SV_blank>alloc<S2SV_blank>memory!\\\\n\" , __func__ ) ; return - 1 ; } <S2SV_ModEnd> for ( i <S2SV_ModStart> |= PCIM_MSIX_VCTRL_MASK ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8646\n\n```\nCWE-476 static int hash_accept ( struct socket * sock , struct socket * newsock , int flags ) { struct sock * sk = sock -> sk ; struct alg_sock * ask = alg_sk ( sk ) ; struct hash_ctx * ctx = ask -> private ; struct ahash_request * req = & ctx -> req ; char state [ crypto_ahash_statesize ( crypto_ahash_reqtfm ( req ) ) ] ; struct sock * sk2 ; struct alg_sock * ask2 ; struct hash_ctx * ctx2 ; <S2SV_StartBug> int err ; <S2SV_EndBug> <S2SV_StartBug> err = crypto_ahash_export ( req , state ) ; <S2SV_EndBug> if ( err ) return err ; err = af_alg_accept ( ask -> parent , newsock ) ; if ( err ) return err ; sk2 = newsock -> sk ; ask2 = alg_sk ( sk2 ) ; ctx2 = ask2 -> private ; <S2SV_StartBug> ctx2 -> more = 1 ; <S2SV_EndBug> err = crypto_ahash_import ( & ctx2 -> req , state ) ; if ( err ) { sock_orphan ( sk2 ) ; sock_put ( sk2 ) ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx2 ; bool more ; <S2SV_ModStart> int err ; lock_sock ( sk ) ; more = ctx -> more ; err = more ? <S2SV_ModEnd> crypto_ahash_export ( req <S2SV_ModStart> , state ) : 0 ; release_sock ( sk ) <S2SV_ModStart> -> more = more ; if ( ! more ) return err <S2SV_ModEnd> ; err =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5307\n\n```\nCWE-399 static int handle_exception ( struct kvm_vcpu * vcpu ) { struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; struct kvm_run * kvm_run = vcpu -> run ; u32 intr_info , ex_no , error_code ; unsigned long cr2 , rip , dr6 ; u32 vect_info ; enum emulation_result er ; vect_info = vmx -> idt_vectoring_info ; intr_info = vmx -> exit_intr_info ; if ( is_machine_check ( intr_info ) ) return handle_machine_check ( vcpu ) ; if ( ( intr_info & INTR_INFO_INTR_TYPE_MASK ) == INTR_TYPE_NMI_INTR ) return 1 ; if ( is_no_device ( intr_info ) ) { vmx_fpu_activate ( vcpu ) ; return 1 ; } if ( is_invalid_opcode ( intr_info ) ) { if ( is_guest_mode ( vcpu ) ) { kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } er = emulate_instruction ( vcpu , EMULTYPE_TRAP_UD ) ; if ( er != EMULATE_DONE ) kvm_queue_exception ( vcpu , UD_VECTOR ) ; return 1 ; } error_code = 0 ; if ( intr_info & INTR_INFO_DELIVER_CODE_MASK ) error_code = vmcs_read32 ( VM_EXIT_INTR_ERROR_CODE ) ; if ( ( vect_info & VECTORING_INFO_VALID_MASK ) && ! ( is_page_fault ( intr_info ) && ! ( error_code & PFERR_RSVD_MASK ) ) ) { vcpu -> run -> exit_reason = KVM_EXIT_INTERNAL_ERROR ; vcpu -> run -> internal . suberror = KVM_INTERNAL_ERROR_SIMUL_EX ; vcpu -> run -> internal . ndata = 3 ; vcpu -> run -> internal . data [ 0 ] = vect_info ; vcpu -> run -> internal . data [ 1 ] = intr_info ; vcpu -> run -> internal . data [ 2 ] = error_code ; return 0 ; } if ( is_page_fault ( intr_info ) ) { BUG_ON ( enable_ept ) ; cr2 = vmcs_readl ( EXIT_QUALIFICATION ) ; trace_kvm_page_fault ( cr2 , error_code ) ; if ( kvm_event_needs_reinjection ( vcpu ) ) kvm_mmu_unprotect_page_virt ( vcpu , cr2 ) ; return kvm_mmu_page_fault ( vcpu , cr2 , error_code , NULL , 0 ) ; } ex_no = intr_info & INTR_INFO_VECTOR_MASK ; if ( vmx -> rmode . vm86_active && rmode_exception ( vcpu , ex_no ) ) return handle_rmode_exception ( vcpu , ex_no , error_code ) ; switch ( ex_no ) { <S2SV_StartBug> case DB_VECTOR : <S2SV_EndBug> dr6 = vmcs_readl ( EXIT_QUALIFICATION ) ; if ( ! ( vcpu -> guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) ) { vcpu -> arch . dr6 &= ~ 15 ; vcpu -> arch . dr6 |= dr6 | DR6_RTM ; if ( ! ( dr6 & ~ DR6_RESERVED ) ) skip_emulated_instruction ( vcpu ) ; kvm_queue_exception ( vcpu , DB_VECTOR ) ; return 1 ; } kvm_run -> debug . arch . dr6 = dr6 | DR6_FIXED_1 ; kvm_run -> debug . arch . dr7 = vmcs_readl ( GUEST_DR7 ) ; case BP_VECTOR : vmx -> vcpu . arch . event_exit_inst_len = vmcs_read32 ( VM_EXIT_INSTRUCTION_LEN ) ; kvm_run -> exit_reason = KVM_EXIT_DEBUG ; rip = kvm_rip_read ( vcpu ) ; kvm_run -> debug . arch . pc = vmcs_readl ( GUEST_CS_BASE ) + rip ; kvm_run -> debug . arch . exception = ex_no ; break ; default : kvm_run -> exit_reason = KVM_EXIT_EXCEPTION ; kvm_run -> ex . exception = ex_no ; kvm_run -> ex . error_code = error_code ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { case AC_VECTOR : kvm_queue_exception_e ( vcpu , AC_VECTOR , error_code ) ; return 1 ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-682(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8326\n\n```\nCWE-682 static int find_low_bit ( unsigned int x ) { int i ; for ( i = 0 ; i <= 31 ; i ++ ) { <S2SV_StartBug> if ( x & ( 1 << i ) ) return i ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x & ( 1U << ( unsigned int ) <S2SV_ModEnd> i ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rc_set_frame_target ( VP9_COMP * cpi , int target ) { const VP9_COMMON * const cm = & cpi -> common ; RATE_CONTROL * const rc = & cpi -> rc ; rc -> this_frame_target = target ; <S2SV_StartBug> rc -> sb64_target_rate = ( ( int64_t ) rc -> this_frame_target * 64 * 64 ) / <S2SV_EndBug> ( cm -> width * cm -> height ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = target ; if ( cpi -> oxcf . resize_mode == RESIZE_DYNAMIC && rc -> frame_size_selector != UNSCALED ) rc -> this_frame_target = ( int ) ( rc -> this_frame_target * rate_thresh_mult [ rc -> frame_size_selector ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7010\n\n```\nCWE-189 static void diff_bytes_c ( uint8_t * dst , const uint8_t * src1 , const uint8_t * src2 , int w ) { long i ; # if ! HAVE_FAST_UNALIGNED if ( ( long ) src2 & ( sizeof ( long ) - 1 ) ) { for ( i = 0 ; i + 7 < w ; i += 8 ) { dst [ i + 0 ] = src1 [ i + 0 ] - src2 [ i + 0 ] ; dst [ i + 1 ] = src1 [ i + 1 ] - src2 [ i + 1 ] ; dst [ i + 2 ] = src1 [ i + 2 ] - src2 [ i + 2 ] ; dst [ i + 3 ] = src1 [ i + 3 ] - src2 [ i + 3 ] ; dst [ i + 4 ] = src1 [ i + 4 ] - src2 [ i + 4 ] ; dst [ i + 5 ] = src1 [ i + 5 ] - src2 [ i + 5 ] ; dst [ i + 6 ] = src1 [ i + 6 ] - src2 [ i + 6 ] ; dst [ i + 7 ] = src1 [ i + 7 ] - src2 [ i + 7 ] ; } } else # endif <S2SV_StartBug> for ( i = 0 ; i <= w - sizeof ( long ) ; i += sizeof ( long ) ) { <S2SV_EndBug> long a = * ( long * ) ( src1 + i ) ; long b = * ( long * ) ( src2 + i ) ; * ( long * ) ( dst + i ) = ( ( a | pb_80 ) - ( b & pb_7f ) ) ^ ( ( a ^ b ^ pb_80 ) & pb_80 ) ; } for ( ; i < w ; i ++ ) dst [ i + 0 ] = src1 [ i + 0 ] - src2 [ i + 0 ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <= w - ( int )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3587\n\n```\nCWE-189 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { size_t tail = ( i << 1 ) + 1 ; if ( cdf_check_stream_offset ( sst , h , p , tail * sizeof ( uint32_t ) , __LINE__ ) == - 1 ) goto out ; size_t ofs = CDF_GETUINT32 ( p , tail ) ; q = ( const uint8_t * ) ( const void * ) ( ( const char * ) ( const void * ) p + ofs - 2 * sizeof ( uint32_t ) ) ; <S2SV_StartBug> if ( q > e ) { <S2SV_EndBug> DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%\" SIZE_T_FORMAT \"u)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=0x%tx,0x%x\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , offs ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; if ( nelements == 0 ) { DPRINTF ( ( \"CDF_VECTOR<S2SV_blank>with<S2SV_blank>nelements<S2SV_blank>==<S2SV_blank>0\\\\n\" ) ) ; goto out ; } o = 2 ; } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_FLOAT : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; u32 = CDF_TOLE4 ( u32 ) ; memcpy ( & inp [ i ] . pi_f , & u32 , sizeof ( inp [ i ] . pi_f ) ) ; break ; case CDF_DOUBLE : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; memcpy ( & inp [ i ] . pi_d , & u64 , sizeof ( inp [ i ] . pi_d ) ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , nelements ) ) ; for ( j = 0 ; j < nelements && i < sh . sh_properties ; j ++ , i ++ ) { uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; if ( l & 1 ) l ++ ; o += l >> 1 ; if ( q + o >= e ) goto out ; o4 = o * sizeof ( uint32_t ) ; } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; break ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( q < p ) { DPRINTF ( ( \"Wrapped<S2SV_blank>around<S2SV_blank>%p<S2SV_blank><<S2SV_blank>%p\\\\n\" , q , p ) ) ; goto out ; } if ( q\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0028\n\n```\nCWE-264 void mm_release ( struct task_struct * tsk , struct mm_struct * mm ) { <S2SV_StartBug> struct completion * vfork_done = tsk -> vfork_done ; <S2SV_EndBug> deactivate_mm ( tsk , mm ) ; if ( vfork_done ) { tsk -> vfork_done = NULL ; complete ( vfork_done ) ; } if ( tsk -> clear_child_tid && ! ( tsk -> flags & PF_SIGNALED ) && atomic_read ( & mm -> mm_users ) > 1 ) { u32 __user * tidptr = tsk -> clear_child_tid ; tsk -> clear_child_tid = NULL ; put_user ( 0 , tidptr ) ; sys_futex ( tidptr , FUTEX_WAKE , 1 , NULL , NULL , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> vfork_done ; # ifdef CONFIG_FUTEX if ( unlikely ( tsk -> robust_list ) ) exit_robust_list ( tsk ) ; # ifdef CONFIG_COMPAT if ( unlikely ( tsk -> compat_robust_list ) ) compat_exit_robust_list ( tsk ) ; # endif # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-6262\n\n```\nCWE-134 rrd_info_t * rrd_graph_v ( int argc , char * * argv ) { image_desc_t im ; rrd_info_t * grinfo ; rrd_graph_init ( & im ) ; rrd_graph_options ( argc , argv , & im ) ; if ( rrd_test_error ( ) ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; return NULL ; } if ( optind >= argc ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; rrd_set_error ( \"missing<S2SV_blank>filename\" ) ; return NULL ; } if ( strlen ( argv [ optind ] ) >= MAXPATH ) { rrd_set_error ( \"filename<S2SV_blank>(including<S2SV_blank>path)<S2SV_blank>too<S2SV_blank>long\" ) ; rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; return NULL ; } strncpy ( im . graphfile , argv [ optind ] , MAXPATH - 1 ) ; im . graphfile [ MAXPATH - 1 ] = '\\\\0' ; if ( strcmp ( im . graphfile , \"-\" ) == 0 ) { im . graphfile [ 0 ] = '\\\\0' ; } rrd_graph_script ( argc , argv , & im , 1 ) ; if ( rrd_test_error ( ) ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; return NULL ; } if ( graph_paint ( & im ) == - 1 ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; return NULL ; } if ( im . imginfo && * im . imginfo ) { rrd_infoval_t info ; char * path ; char * filename ; if ( bad_format_imginfo ( im . imginfo ) ) { rrd_info_free ( im . grinfo ) ; im_free ( & im ) ; <S2SV_StartBug> rrd_set_error ( \"bad<S2SV_blank>format<S2SV_blank>for<S2SV_blank>imginfo\" ) ; <S2SV_EndBug> return NULL ; } path = strdup ( im . graphfile ) ; filename = basename ( path ) ; info . u_str = sprintf_alloc ( im . imginfo , filename , ( long ) ( im . zoom * im . ximg ) , ( long ) ( im . zoom * im . yimg ) ) ; grinfo_push ( & im , sprintf_alloc ( \"image_info\" ) , RD_I_STR , info ) ; free ( info . u_str ) ; free ( path ) ; } if ( im . rendered_image ) { rrd_infoval_t img ; img . u_blo . size = im . rendered_image_size ; img . u_blo . ptr = im . rendered_image ; grinfo_push ( & im , sprintf_alloc ( \"image\" ) , RD_I_BLO , img ) ; } grinfo = im . grinfo ; im_free ( & im ) ; return grinfo ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> im ) ; <S2SV_ModEnd> return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21309\n\n```\nCWE-190 <S2SV_StartBug> void * zmalloc ( size_t size ) { <S2SV_EndBug> void * ptr = malloc ( size + PREFIX_SIZE ) ; if ( ! ptr ) zmalloc_oom_handler ( size ) ; # ifdef HAVE_MALLOC_SIZE update_zmalloc_stat_alloc ( zmalloc_size ( ptr ) ) ; return ptr ; # else * ( ( size_t * ) ptr ) = size ; update_zmalloc_stat_alloc ( size + PREFIX_SIZE ) ; return ( char * ) ptr + PREFIX_SIZE ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) { ASSERT_NO_SIZE_OVERFLOW ( size ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0728\n\n```\nCWE-000 long join_session_keyring ( const char * name ) { const struct cred * old ; struct cred * new ; struct key * keyring ; long ret , serial ; new = prepare_creds ( ) ; if ( ! new ) return - ENOMEM ; old = current_cred ( ) ; if ( ! name ) { ret = install_session_keyring_to_cred ( new , NULL ) ; if ( ret < 0 ) goto error ; serial = new -> session_keyring -> serial ; ret = commit_creds ( new ) ; if ( ret == 0 ) ret = serial ; goto okay ; } mutex_lock ( & key_session_mutex ) ; keyring = find_keyring_by_name ( name , false ) ; if ( PTR_ERR ( keyring ) == - ENOKEY ) { keyring = keyring_alloc ( name , old -> uid , old -> gid , old , KEY_POS_ALL | KEY_USR_VIEW | KEY_USR_READ | KEY_USR_LINK , KEY_ALLOC_IN_QUOTA , NULL ) ; if ( IS_ERR ( keyring ) ) { ret = PTR_ERR ( keyring ) ; goto error2 ; } } else if ( IS_ERR ( keyring ) ) { ret = PTR_ERR ( keyring ) ; goto error2 ; } else if ( keyring == new -> session_keyring ) { <S2SV_StartBug> ret = 0 ; <S2SV_EndBug> goto error2 ; } ret = install_session_keyring_to_cred ( new , keyring ) ; if ( ret < 0 ) goto error2 ; commit_creds ( new ) ; mutex_unlock ( & key_session_mutex ) ; ret = keyring -> serial ; key_put ( keyring ) ; okay : return ret ; error2 : mutex_unlock ( & key_session_mutex ) ; error : abort_creds ( new ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> session_keyring ) { key_put ( keyring ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 EAS_BOOL WT_CheckSampleEnd ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame , EAS_BOOL update ) { EAS_U32 endPhaseAccum ; EAS_U32 endPhaseFrac ; EAS_I32 numSamples ; EAS_BOOL done = EAS_FALSE ; endPhaseFrac = pWTVoice -> phaseFrac + ( pWTIntFrame -> frame . phaseIncrement << SYNTH_UPDATE_PERIOD_IN_BITS ) ; endPhaseAccum = pWTVoice -> phaseAccum + GET_PHASE_INT_PART ( endPhaseFrac ) ; if ( endPhaseAccum >= pWTVoice -> loopEnd ) { numSamples = ( EAS_I32 ) ( pWTVoice -> loopEnd - pWTVoice -> phaseAccum ) ; numSamples = ( EAS_I32 ) ( ( numSamples << NUM_PHASE_FRAC_BITS ) - pWTVoice -> phaseFrac ) ; if ( pWTIntFrame -> frame . phaseIncrement ) { pWTIntFrame -> numSamples = 1 + ( numSamples / pWTIntFrame -> frame . phaseIncrement ) ; } else { pWTIntFrame -> numSamples = numSamples ; } if ( pWTIntFrame -> numSamples < 0 ) { ALOGE ( \"b/26366256\" ) ; <S2SV_StartBug> pWTIntFrame -> numSamples = 0 ; <S2SV_EndBug> } done = EAS_TRUE ; } if ( update ) { pWTVoice -> phaseFrac = endPhaseFrac ; pWTVoice -> phaseAccum = endPhaseAccum ; } return done ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"b/26366256\" ) ; android_errorWriteLog ( 0x534e4554 , \"26366256\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13034\n\n```\nCWE-125 void pgm_print ( netdissect_options * ndo , register const u_char * bp , register u_int length , register const u_char * bp2 ) { register const struct pgm_header * pgm ; register const struct ip * ip ; register char ch ; uint16_t sport , dport ; u_int nla_afnum ; char nla_buf [ INET6_ADDRSTRLEN ] ; register const struct ip6_hdr * ip6 ; uint8_t opt_type , opt_len ; uint32_t seq , opts_len , len , offset ; pgm = ( const struct pgm_header * ) bp ; ip = ( const struct ip * ) bp2 ; if ( IP_V ( ip ) == 6 ) ip6 = ( const struct ip6_hdr * ) bp2 ; else ip6 = NULL ; ch = '\\\\0' ; if ( ! ND_TTEST ( pgm -> pgm_dport ) ) { if ( ip6 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ipaddr_string ( ndo , & ip -> ip_src ) , ipaddr_string ( ndo , & ip -> ip_dst ) ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } } sport = EXTRACT_16BITS ( & pgm -> pgm_sport ) ; dport = EXTRACT_16BITS ( & pgm -> pgm_dport ) ; if ( ip6 ) { if ( ip6 -> ip6_nxt == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , tcpport_string ( ndo , sport ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } else { if ( ip -> ip_p == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ipaddr_string ( ndo , & ip -> ip_src ) , tcpport_string ( ndo , sport ) , ipaddr_string ( ndo , & ip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } ND_TCHECK ( * pgm ) ; ND_PRINT ( ( ndo , \"PGM,<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ) ; if ( ! ndo -> ndo_vflag ) return ; ND_PRINT ( ( ndo , \"<S2SV_blank>0x%02x%02x%02x%02x%02x%02x<S2SV_blank>\" , pgm -> pgm_gsid [ 0 ] , pgm -> pgm_gsid [ 1 ] , pgm -> pgm_gsid [ 2 ] , pgm -> pgm_gsid [ 3 ] , pgm -> pgm_gsid [ 4 ] , pgm -> pgm_gsid [ 5 ] ) ) ; switch ( pgm -> pgm_type ) { case PGM_SPM : { const struct pgm_spm * spm ; spm = ( const struct pgm_spm * ) ( pgm + 1 ) ; ND_TCHECK ( * spm ) ; bp = ( const u_char * ) ( spm + 1 ) ; switch ( EXTRACT_16BITS ( & spm -> pgms_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"SPM<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>lead<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s\" , EXTRACT_32BITS ( & spm -> pgms_seq ) , EXTRACT_32BITS ( & spm -> pgms_trailseq ) , EXTRACT_32BITS ( & spm -> pgms_leadseq ) , nla_buf ) ) ; break ; } case PGM_POLL : { const struct pgm_poll * poll_msg ; poll_msg = ( const struct pgm_poll * ) ( pgm + 1 ) ; ND_TCHECK ( * poll_msg ) ; ND_PRINT ( ( ndo , \"POLL<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u\" , EXTRACT_32BITS ( & poll_msg -> pgmp_seq ) , EXTRACT_16BITS ( & poll_msg -> pgmp_round ) ) ) ; bp = ( const u_char * ) ( poll_msg + 1 ) ; break ; } case PGM_POLR : { const struct pgm_polr * polr ; uint32_t ivl , rnd , mask ; polr = ( const struct pgm_polr * ) ( pgm + 1 ) ; ND_TCHECK ( * polr ) ; bp = ( const u_char * ) ( polr + 1 ) ; switch ( EXTRACT_16BITS ( & polr -> pgmp_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; ivl = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; rnd = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; mask = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"POLR<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>rnd<S2SV_blank>0x%08x<S2SV_blank>\" \"mask<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & polr -> pgmp_seq ) , EXTRACT_16BITS ( & polr -> pgmp_round ) , nla_buf , ivl , rnd , mask ) ) ; break ; } case PGM_ODATA : { const struct pgm_data * odata ; odata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * odata ) ; ND_PRINT ( ( ndo , \"ODATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & odata -> pgmd_trailseq ) , EXTRACT_32BITS ( & odata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( odata + 1 ) ; break ; } case PGM_RDATA : { const struct pgm_data * rdata ; rdata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * rdata ) ; ND_PRINT ( ( ndo , \"RDATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & rdata -> pgmd_trailseq ) , EXTRACT_32BITS ( & rdata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( rdata + 1 ) ; break ; } case PGM_NAK : case PGM_NULLNAK : case PGM_NCF : { const struct pgm_nak * nak ; char source_buf [ INET6_ADDRSTRLEN ] , group_buf [ INET6_ADDRSTRLEN ] ; nak = ( const struct pgm_nak * ) ( pgm + 1 ) ; ND_TCHECK ( * nak ) ; bp = ( const u_char * ) ( nak + 1 ) ; switch ( EXTRACT_16BITS ( & nak -> pgmn_source_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } bp += ( 2 * sizeof ( uint16_t ) ) ; <S2SV_StartBug> switch ( EXTRACT_16BITS ( bp ) ) { <S2SV_EndBug> case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } switch ( pgm -> pgm_type ) { case PGM_NAK : ND_PRINT ( ( ndo , \"NAK<S2SV_blank>\" ) ) ; break ; case PGM_NULLNAK : ND_PRINT ( ( ndo , \"NNAK<S2SV_blank>\" ) ) ; break ; case PGM_NCF : ND_PRINT ( ( ndo , \"NCF<S2SV_blank>\" ) ) ; break ; default : break ; } ND_PRINT ( ( ndo , \"(%s<S2SV_blank>-><S2SV_blank>%s),<S2SV_blank>seq<S2SV_blank>%u\" , source_buf , group_buf , EXTRACT_32BITS ( & nak -> pgmn_seq ) ) ) ; break ; } case PGM_ACK : { const struct pgm_ack * ack ; ack = ( const struct pgm_ack * ) ( pgm + 1 ) ; ND_TCHECK ( * ack ) ; ND_PRINT ( ( ndo , \"ACK<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & ack -> pgma_rx_max_seq ) ) ) ; bp = ( const u_char * ) ( ack + 1 ) ; break ; } case PGM_SPMR : ND_PRINT ( ( ndo , \"SPMR\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"UNKNOWN<S2SV_blank>type<S2SV_blank>0x%02x\" , pgm -> pgm_type ) ) ; break ; } if ( pgm -> pgm_options & PGM_OPT_BIT_PRESENT ) { if ( ! ND_TTEST2 ( * bp , PGM_MIN_OPT_LEN ) ) { ND_PRINT ( ( ndo , \"[|OPT]\" ) ) ; return ; } opt_type = * bp ++ ; if ( ( opt_type & PGM_OPT_MASK ) != PGM_OPT_LENGTH ) { ND_PRINT ( ( ndo , \"[First<S2SV_blank>option<S2SV_blank>bad,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>PGM_OPT_LENGTH,<S2SV_blank>is<S2SV_blank>%u]\" , opt_type & PGM_OPT_MASK ) ) ; return ; } opt_len = * bp ++ ; if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } opts_len = EXTRACT_16BITS ( bp ) ; if ( opts_len < 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>4]\" , opts_len ) ) ; return ; } bp += sizeof ( uint16_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>%d\" , opts_len ) ) ; opts_len -= 4 ; while ( opts_len ) { if ( opts_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } if ( ! ND_TTEST2 ( * bp , 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; } opt_type = * bp ++ ; opt_len = * bp ++ ; if ( opt_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_MIN_OPT_LEN ) ) ; break ; } if ( opts_len < opt_len ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } if ( ! ND_TTEST2 ( * bp , opt_len - 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; } switch ( opt_type & PGM_OPT_MASK ) { case PGM_OPT_LENGTH : # define PGM_OPT_LENGTH_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_LENGTH_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_LENGTH_LEN ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>(extra?)<S2SV_blank>%d\" , EXTRACT_16BITS ( bp ) ) ) ; bp += 2 ; opts_len -= PGM_OPT_LENGTH_LEN ; break ; case PGM_OPT_FRAGMENT : # define PGM_OPT_FRAGMENT_LEN ( 2 + 2 + 4 + 4 + 4 ) if ( opt_len != PGM_OPT_FRAGMENT_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FRAGMENT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_FRAGMENT_LEN ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FRAG<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>off<S2SV_blank>%u<S2SV_blank>len<S2SV_blank>%u\" , seq , offset , len ) ) ; opts_len -= PGM_OPT_FRAGMENT_LEN ; break ; case PGM_OPT_NAK_LIST : bp += 2 ; opt_len -= 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NAK<S2SV_blank>LIST\" ) ) ; while ( opt_len ) { if ( opt_len < 4 ) { ND_PRINT ( ( ndo , \"[Option<S2SV_blank>length<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4]\" ) ) ; return ; } ND_TCHECK2 ( * bp , 4 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( bp ) ) ) ; bp += 4 ; opt_len -= 4 ; opts_len -= 4 ; } break ; case PGM_OPT_JOIN : # define PGM_OPT_JOIN_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_JOIN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_JOIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_JOIN_LEN ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>JOIN<S2SV_blank>%u\" , seq ) ) ; opts_len -= PGM_OPT_JOIN_LEN ; break ; case PGM_OPT_NAK_BO_IVL : # define PGM_OPT_NAK_BO_IVL_LEN ( 2 + 2 + 4 + 4 ) if ( opt_len != PGM_OPT_NAK_BO_IVL_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_IVL<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NAK_BO_IVL_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>ivlseq<S2SV_blank>%u\" , offset , seq ) ) ; opts_len -= PGM_OPT_NAK_BO_IVL_LEN ; break ; case PGM_OPT_NAK_BO_RNG : # define PGM_OPT_NAK_BO_RNG_LEN ( 2 + 2 + 4 + 4 ) if ( opt_len != PGM_OPT_NAK_BO_RNG_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_RNG<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NAK_BO_RNG_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>max<S2SV_blank>%u<S2SV_blank>min<S2SV_blank>%u\" , offset , seq ) ) ; opts_len -= PGM_OPT_NAK_BO_RNG_LEN ; break ; case PGM_OPT_REDIRECT : # define PGM_OPT_REDIRECT_FIXED_LEN ( 2 + 2 + 2 + 2 ) if ( opt_len < PGM_OPT_REDIRECT_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_REDIRECT_FIXED_LEN ) ) ; return ; } bp += 2 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_REDIRECT_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , PGM_OPT_REDIRECT_FIXED_LEN , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>REDIRECT<S2SV_blank>%s\" , nla_buf ) ) ; break ; case PGM_OPT_PARITY_PRM : # define PGM_OPT_PARITY_PRM_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_PARITY_PRM_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_PRM<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_PARITY_PRM_LEN ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>MAXTGS<S2SV_blank>%u\" , len ) ) ; opts_len -= PGM_OPT_PARITY_PRM_LEN ; break ; case PGM_OPT_PARITY_GRP : # define PGM_OPT_PARITY_GRP_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_PARITY_GRP_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_GRP<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_PARITY_GRP_LEN ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>GROUP<S2SV_blank>%u\" , seq ) ) ; opts_len -= PGM_OPT_PARITY_GRP_LEN ; break ; case PGM_OPT_CURR_TGSIZE : # define PGM_OPT_CURR_TGSIZE_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_CURR_TGSIZE_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CURR_TGSIZE<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_CURR_TGSIZE_LEN ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>ATGS<S2SV_blank>%u\" , len ) ) ; opts_len -= PGM_OPT_CURR_TGSIZE_LEN ; break ; case PGM_OPT_NBR_UNREACH : # define PGM_OPT_NBR_UNREACH_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_NBR_UNREACH_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NBR_UNREACH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NBR_UNREACH_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NBR_UNREACH\" ) ) ; opts_len -= PGM_OPT_NBR_UNREACH_LEN ; break ; case PGM_OPT_PATH_NLA : ND_PRINT ( ( ndo , \"<S2SV_blank>PATH_NLA<S2SV_blank>[%d]\" , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_SYN : # define PGM_OPT_SYN_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_SYN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_SYN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_SYN_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>SYN\" ) ) ; opts_len -= PGM_OPT_SYN_LEN ; break ; case PGM_OPT_FIN : # define PGM_OPT_FIN_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_FIN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_FIN_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FIN\" ) ) ; opts_len -= PGM_OPT_FIN_LEN ; break ; case PGM_OPT_RST : # define PGM_OPT_RST_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_RST_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_RST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_RST_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>RST\" ) ) ; opts_len -= PGM_OPT_RST_LEN ; break ; case PGM_OPT_CR : ND_PRINT ( ( ndo , \"<S2SV_blank>CR\" ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_CRQST : # define PGM_OPT_CRQST_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_CRQST_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CRQST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_CRQST_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>CRQST\" ) ) ; opts_len -= PGM_OPT_CRQST_LEN ; break ; case PGM_OPT_PGMCC_DATA : # define PGM_OPT_PGMCC_DATA_FIXED_LEN ( 2 + 2 + 4 + 2 + 2 ) if ( opt_len < PGM_OPT_PGMCC_DATA_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>DATA<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; case PGM_OPT_PGMCC_FEEDBACK : # define PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ( 2 + 2 + 4 + 2 + 2 ) if ( opt_len < PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>PGM_OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>FEEDBACK<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>OPT_%02X<S2SV_blank>[%d]<S2SV_blank>\" , opt_type , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; } if ( opt_type & PGM_OPT_END ) break ; } } ND_PRINT ( ( ndo , \"<S2SV_blank>[%u]\" , length ) ) ; if ( ndo -> ndo_packettype == PT_PGM_ZMTP1 && ( pgm -> pgm_type == PGM_ODATA || pgm -> pgm_type == PGM_RDATA ) ) zmtp1_print_datagram ( ndo , bp , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|pgm]\" ) ) ; if ( ch != '\\\\0' ) ND_PRINT ( ( ndo , \">\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; <S2SV_ModEnd> } else { <S2SV_ModStart> ) ) ; } return ; <S2SV_ModEnd> } sport = <S2SV_ModStart> ) ) ; ND_TCHECK_16BITS ( bp ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int fourcc_is_ivf ( const char detect [ 4 ] ) { <S2SV_EndBug> if ( memcmp ( detect , \"DKIF\" , 4 ) == 0 ) { return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14039\n\n```\nCWE-787 static OPJ_BOOL opj_j2k_write_sot ( opj_j2k_t * p_j2k , OPJ_BYTE * p_data , OPJ_UINT32 p_total_data_size , OPJ_UINT32 * p_data_written , const opj_stream_private_t * p_stream , opj_event_mgr_t * p_manager ) { assert ( p_j2k != 00 ) ; assert ( p_manager != 00 ) ; assert ( p_stream != 00 ) ; OPJ_UNUSED ( p_stream ) ; <S2SV_StartBug> OPJ_UNUSED ( p_manager ) ; <S2SV_EndBug> if ( p_total_data_size < 12 ) { opj_event_msg ( p_manager , EVT_ERROR , \"Not<S2SV_blank>enough<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>output<S2SV_blank>buffer<S2SV_blank>to<S2SV_blank>write<S2SV_blank>SOT<S2SV_blank>marker\\\\n\" ) ; return OPJ_FALSE ; } opj_write_bytes ( p_data , J2K_MS_SOT , 2 ) ; p_data += 2 ; opj_write_bytes ( p_data , 10 , 2 ) ; p_data += 2 ; opj_write_bytes ( p_data , p_j2k -> m_current_tile_number , 2 ) ; p_data += 2 ; p_data += 4 ; opj_write_bytes ( p_data , p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number , 1 ) ; ++ p_data ; opj_write_bytes ( p_data , p_j2k -> m_cp . tcps [ p_j2k -> m_current_tile_number ] . m_nb_tile_parts , 1 ) ; ++ p_data ; # ifdef USE_JPWL assert ( 0 && \"TODO\" ) ; # endif * p_data_written = 12 ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p_stream ) ; <S2SV_ModEnd> if ( p_total_data_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1956\n\n```\nCWE-264 int create_user_ns ( struct cred * new ) { struct user_namespace * ns , * parent_ns = new -> user_ns ; kuid_t owner = new -> euid ; kgid_t group = new -> egid ; <S2SV_StartBug> int ret ; <S2SV_EndBug> if ( ! kuid_has_mapping ( parent_ns , owner ) || ! kgid_has_mapping ( parent_ns , group ) ) return - EPERM ; ns = kmem_cache_zalloc ( user_ns_cachep , GFP_KERNEL ) ; if ( ! ns ) return - ENOMEM ; ret = proc_alloc_inum ( & ns -> proc_inum ) ; if ( ret ) { kmem_cache_free ( user_ns_cachep , ns ) ; return ret ; } atomic_set ( & ns -> count , 1 ) ; ns -> parent = parent_ns ; ns -> owner = owner ; ns -> group = group ; set_cred_user_ns ( new , ns ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int ret ; if ( current_chrooted ( ) ) return - EPERM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15785\n\n```\nCWE-119 static void GTextFieldSave ( GTextField * gt , int utf8 ) { unichar_t * ret ; char * cret ; FILE * file ; unichar_t * pt ; if ( _ggadget_use_gettext ) { char * temp = GWidgetOpenFile8 ( _ ( \"Save\" ) , NULL , \"*.{txt,py}\" , NULL , NULL ) ; ret = utf82u_copy ( temp ) ; free ( temp ) ; } else ret = GWidgetSaveAsFile ( GStringGetResource ( _STR_Save , NULL ) , NULL , txt , NULL , NULL ) ; if ( ret == NULL ) return ; cret = u2def_copy ( ret ) ; free ( ret ) ; file = fopen ( cret , \"w\" ) ; if ( file == NULL ) { if ( _ggadget_use_gettext ) GWidgetError8 ( _ ( \"Could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>file\" ) , _ ( \"Could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>%.100s\" ) , cret ) ; else GWidgetError ( errort , error , cret ) ; free ( cret ) ; return ; } free ( cret ) ; if ( utf8 ) { putc ( 0xef , file ) ; putc ( 0xbb , file ) ; putc ( 0xbf , file ) ; for ( pt = gt -> text ; * pt ; ++ pt ) { if ( * pt < 0x80 ) putc ( * pt , file ) ; else if ( * pt < 0x800 ) { putc ( 0xc0 | ( * pt >> 6 ) , file ) ; putc ( 0x80 | ( * pt & 0x3f ) , file ) ; } else if ( * pt >= 0xd800 && * pt < 0xdc00 && pt [ 1 ] >= 0xdc00 && pt [ 1 ] < 0xe000 ) { int u = ( ( * pt >> 6 ) & 0xf ) + 1 , y = ( ( * pt & 3 ) << 4 ) | ( ( pt [ 1 ] >> 6 ) & 0xf ) ; putc ( 0xf0 | ( u >> 2 ) , file ) ; putc ( 0x80 | ( ( u & 3 ) << 4 ) | ( ( * pt >> 2 ) & 0xf ) , file ) ; putc ( 0x80 | y , file ) ; putc ( 0x80 | ( pt [ 1 ] & 0x3f ) , file ) ; } else { putc ( 0xe0 | ( * pt >> 12 ) , file ) ; putc ( 0x80 | ( ( * pt >> 6 ) & 0x3f ) , file ) ; putc ( 0x80 | ( * pt & 0x3f ) , file ) ; } } } else { putc ( 0xfeff >> 8 , file ) ; putc ( 0xfeff & 0xff , file ) ; for ( pt = gt -> text ; * pt ; ++ pt ) { putc ( * pt >> 8 , file ) ; putc ( * pt & 0xff , file ) ; } } fclose ( file ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> file ) ; GTextFieldSaved ( gt ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5093\n\n```\nCWE-125 static char * get_icu_value_internal ( const char * loc_name , char * tag_name , int * result , int fromParseLocale ) { char * tag_value = NULL ; int32_t tag_value_len = 512 ; int singletonPos = 0 ; char * mod_loc_name = NULL ; int grOffset = 0 ; int32_t buflen = 512 ; UErrorCode status = U_ZERO_ERROR ; if ( strcmp ( tag_name , LOC_CANONICALIZE_TAG ) != 0 ) { grOffset = findOffset ( LOC_GRANDFATHERED , loc_name ) ; if ( grOffset >= 0 ) { if ( strcmp ( tag_name , LOC_LANG_TAG ) == 0 ) { return estrdup ( loc_name ) ; } else { return NULL ; } } if ( fromParseLocale == 1 ) { if ( strcmp ( tag_name , LOC_LANG_TAG ) == 0 ) { if ( strlen ( loc_name ) > 1 && ( isIDPrefix ( loc_name ) == 1 ) ) { return estrdup ( loc_name ) ; } } singletonPos = getSingletonPos ( loc_name ) ; if ( singletonPos == 0 ) { return NULL ; } else if ( singletonPos > 0 ) { mod_loc_name = estrndup ( loc_name , singletonPos - 1 ) ; } } } if ( mod_loc_name == NULL ) { mod_loc_name = estrdup ( loc_name ) ; } do { tag_value = erealloc ( tag_value , buflen ) ; tag_value_len = buflen ; if ( strcmp ( tag_name , LOC_SCRIPT_TAG ) == 0 ) { buflen = uloc_getScript ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( strcmp ( tag_name , LOC_LANG_TAG ) == 0 ) { buflen = uloc_getLanguage ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( strcmp ( tag_name , LOC_REGION_TAG ) == 0 ) { buflen = uloc_getCountry ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( strcmp ( tag_name , LOC_VARIANT_TAG ) == 0 ) { buflen = uloc_getVariant ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( strcmp ( tag_name , LOC_CANONICALIZE_TAG ) == 0 ) { buflen = uloc_canonicalize ( mod_loc_name , tag_value , tag_value_len , & status ) ; } if ( U_FAILURE ( status ) ) { if ( status == U_BUFFER_OVERFLOW_ERROR ) { status = U_ZERO_ERROR ; <S2SV_StartBug> continue ; <S2SV_EndBug> } * result = 0 ; if ( tag_value ) { efree ( tag_value ) ; } if ( mod_loc_name ) { efree ( mod_loc_name ) ; } return NULL ; } } while ( buflen > tag_value_len ) ; if ( buflen == 0 ) { * result = - 1 ; if ( tag_value ) { efree ( tag_value ) ; } if ( mod_loc_name ) { efree ( mod_loc_name ) ; } return NULL ; } else { * result = 1 ; } if ( mod_loc_name ) { efree ( mod_loc_name ) ; } return tag_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = U_ZERO_ERROR ; buflen ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7524\n\n```\nCWE-125 static ssize_t parse8BIM ( Image * ifile , Image * ofile ) { char brkused , quoted , * line , * token , * newstr , * name ; int state , next ; unsigned char dataset ; unsigned int recnum ; int inputlen = MagickPathExtent ; MagickOffsetType savedpos , currentpos ; ssize_t savedolen = 0L , outputlen = 0L ; TokenInfo * token_info ; dataset = 0 ; recnum = 0 ; line = ( char * ) AcquireQuantumMemory ( ( size_t ) inputlen , sizeof ( * line ) ) ; if ( line == ( char * ) NULL ) return ( - 1 ) ; newstr = name = token = ( char * ) NULL ; savedpos = 0 ; token_info = AcquireTokenInfo ( ) ; while ( super_fgets ( & line , & inputlen , ifile ) != NULL ) { state = 0 ; next = 0 ; token = ( char * ) AcquireQuantumMemory ( ( size_t ) inputlen , sizeof ( * token ) ) ; if ( token == ( char * ) NULL ) break ; newstr = ( char * ) AcquireQuantumMemory ( ( size_t ) inputlen , sizeof ( * newstr ) ) ; if ( newstr == ( char * ) NULL ) break ; while ( Tokenizer ( token_info , 0 , token , ( size_t ) inputlen , line , \"\" , \"=\" , \"\\\\\"\" , 0 , & brkused , & next , & quoted ) == 0 ) { if ( state == 0 ) { int state , next ; char brkused , quoted ; state = 0 ; next = 0 ; while ( Tokenizer ( token_info , 0 , newstr , ( size_t ) inputlen , token , \"\" , \"#\" , \"\" , 0 , & brkused , & next , & quoted ) == 0 ) { switch ( state ) { case 0 : if ( strcmp ( newstr , \"8BIM\" ) == 0 ) dataset = 255 ; else dataset = ( unsigned char ) StringToLong ( newstr ) ; break ; case 1 : recnum = ( unsigned int ) StringToUnsignedLong ( newstr ) ; break ; case 2 : name = ( char * ) AcquireQuantumMemory ( strlen ( newstr ) + MagickPathExtent , sizeof ( * name ) ) ; if ( name ) ( void ) strcpy ( name , newstr ) ; break ; } state ++ ; } } else if ( state == 1 ) { int next ; ssize_t len ; char brkused , quoted ; next = 0 ; len = ( ssize_t ) strlen ( token ) ; while ( Tokenizer ( token_info , 0 , newstr , ( size_t ) inputlen , token , \"\" , \"&\" , \"\" , 0 , & brkused , & next , & quoted ) == 0 ) { if ( brkused && next > 0 ) { char * s = & token [ next - 1 ] ; len -= ( ssize_t ) convertHTMLcodes ( s , ( int ) strlen ( s ) ) ; } } if ( dataset == 255 ) { unsigned char nlen = 0 ; int i ; if ( savedolen > 0 ) { MagickOffsetType offset ; ssize_t diff = outputlen - savedolen ; currentpos = TellBlob ( ofile ) ; if ( currentpos < 0 ) return ( - 1 ) ; offset = SeekBlob ( ofile , savedpos , SEEK_SET ) ; if ( offset < 0 ) return ( - 1 ) ; ( void ) WriteBlobMSBLong ( ofile , ( unsigned int ) diff ) ; offset = SeekBlob ( ofile , currentpos , SEEK_SET ) ; if ( offset < 0 ) return ( - 1 ) ; savedolen = 0L ; } if ( outputlen & 1 ) { ( void ) WriteBlobByte ( ofile , 0x00 ) ; outputlen ++ ; } ( void ) WriteBlobString ( ofile , \"8BIM\" ) ; ( void ) WriteBlobMSBShort ( ofile , ( unsigned short ) recnum ) ; outputlen += 6 ; if ( name ) nlen = ( unsigned char ) strlen ( name ) ; ( void ) WriteBlobByte ( ofile , nlen ) ; outputlen ++ ; for ( i = 0 ; i < nlen ; i ++ ) ( void ) WriteBlobByte ( ofile , ( unsigned char ) name [ i ] ) ; outputlen += nlen ; if ( ( nlen & 0x01 ) == 0 ) { ( void ) WriteBlobByte ( ofile , 0x00 ) ; outputlen ++ ; } if ( recnum != IPTC_ID ) { ( void ) WriteBlobMSBLong ( ofile , ( unsigned int ) len ) ; outputlen += 4 ; next = 0 ; outputlen += len ; <S2SV_StartBug> while ( len -- ) <S2SV_EndBug> ( void ) WriteBlobByte ( ofile , ( unsigned char ) token [ next ++ ] ) ; if ( outputlen & 1 ) { ( void ) WriteBlobByte ( ofile , 0x00 ) ; outputlen ++ ; } } else { savedpos = TellBlob ( ofile ) ; if ( savedpos < 0 ) return ( - 1 ) ; ( void ) WriteBlobMSBLong ( ofile , 0xFFFFFFFFU ) ; outputlen += 4 ; savedolen = outputlen ; } } else { if ( len <= 0x7FFF ) { ( void ) WriteBlobByte ( ofile , 0x1c ) ; ( void ) WriteBlobByte ( ofile , ( unsigned char ) dataset ) ; ( void ) WriteBlobByte ( ofile , ( unsigned char ) ( recnum & 0xff ) ) ; ( void ) WriteBlobMSBShort ( ofile , ( unsigned short ) len ) ; outputlen += 5 ; next = 0 ; outputlen += len ; <S2SV_StartBug> while ( len -- ) <S2SV_EndBug> ( void ) WriteBlobByte ( ofile , ( unsigned char ) token [ next ++ ] ) ; } } } state ++ ; } if ( token != ( char * ) NULL ) token = DestroyString ( token ) ; if ( newstr != ( char * ) NULL ) newstr = DestroyString ( newstr ) ; if ( name != ( char * ) NULL ) name = DestroyString ( name ) ; } token_info = DestroyTokenInfo ( token_info ) ; if ( token != ( char * ) NULL ) token = DestroyString ( token ) ; if ( newstr != ( char * ) NULL ) newstr = DestroyString ( newstr ) ; if ( name != ( char * ) NULL ) name = DestroyString ( name ) ; line = DestroyString ( line ) ; if ( savedolen > 0 ) { MagickOffsetType offset ; ssize_t diff = outputlen - savedolen ; currentpos = TellBlob ( ofile ) ; if ( currentpos < 0 ) return ( - 1 ) ; offset = SeekBlob ( ofile , savedpos , SEEK_SET ) ; if ( offset < 0 ) return ( - 1 ) ; ( void ) WriteBlobMSBLong ( ofile , ( unsigned int ) diff ) ; offset = SeekBlob ( ofile , currentpos , SEEK_SET ) ; if ( offset < 0 ) return ( - 1 ) ; savedolen = 0L ; } return outputlen ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( len -- > 0 <S2SV_ModStart> ( len -- > 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13008\n\n```\nCWE-125 static int parse_elements ( netdissect_options * ndo , struct mgmt_body_t * pbody , const u_char * p , int offset , u_int length ) { u_int elementlen ; struct ssid_t ssid ; struct challenge_t challenge ; struct rates_t rates ; struct ds_t ds ; struct cf_t cf ; struct tim_t tim ; pbody -> challenge_present = 0 ; pbody -> ssid_present = 0 ; pbody -> rates_present = 0 ; pbody -> ds_present = 0 ; pbody -> cf_present = 0 ; pbody -> tim_present = 0 ; while ( length != 0 ) { if ( ! ND_TTEST2 ( * ( p + offset ) , 2 ) ) return 0 ; if ( length < 2 ) return 0 ; elementlen = * ( p + offset + 1 ) ; if ( ! ND_TTEST2 ( * ( p + offset + 2 ) , elementlen ) ) return 0 ; if ( length < elementlen + 2 ) return 0 ; switch ( * ( p + offset ) ) { case E_SSID : memcpy ( & ssid , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( ssid . length != 0 ) { if ( ssid . length > sizeof ( ssid . ssid ) - 1 ) return 0 ; <S2SV_StartBug> if ( ! ND_TTEST2 ( * ( p + offset ) , ssid . length ) ) <S2SV_EndBug> return 0 ; if ( length < ssid . length ) return 0 ; memcpy ( & ssid . ssid , p + offset , ssid . length ) ; offset += ssid . length ; length -= ssid . length ; } ssid . ssid [ ssid . length ] = '\\\\0' ; if ( ! pbody -> ssid_present ) { pbody -> ssid = ssid ; pbody -> ssid_present = 1 ; } break ; case E_CHALLENGE : memcpy ( & challenge , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( challenge . length != 0 ) { if ( challenge . length > sizeof ( challenge . text ) - 1 ) return 0 ; <S2SV_StartBug> if ( ! ND_TTEST2 ( * ( p + offset ) , challenge . length ) ) <S2SV_EndBug> return 0 ; if ( length < challenge . length ) return 0 ; memcpy ( & challenge . text , p + offset , challenge . length ) ; offset += challenge . length ; length -= challenge . length ; } challenge . text [ challenge . length ] = '\\\\0' ; if ( ! pbody -> challenge_present ) { pbody -> challenge = challenge ; pbody -> challenge_present = 1 ; } break ; case E_RATES : memcpy ( & rates , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( rates . length != 0 ) { if ( rates . length > sizeof rates . rate ) return 0 ; <S2SV_StartBug> if ( ! ND_TTEST2 ( * ( p + offset ) , rates . length ) ) <S2SV_EndBug> return 0 ; if ( length < rates . length ) return 0 ; memcpy ( & rates . rate , p + offset , rates . length ) ; offset += rates . length ; length -= rates . length ; } if ( ! pbody -> rates_present && rates . length != 0 ) { pbody -> rates = rates ; pbody -> rates_present = 1 ; } break ; case E_DS : memcpy ( & ds , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( ds . length != 1 ) { offset += ds . length ; length -= ds . length ; break ; } ds . channel = * ( p + offset ) ; offset += 1 ; length -= 1 ; if ( ! pbody -> ds_present ) { pbody -> ds = ds ; pbody -> ds_present = 1 ; } break ; case E_CF : memcpy ( & cf , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( cf . length != 6 ) { offset += cf . length ; length -= cf . length ; break ; } memcpy ( & cf . count , p + offset , 6 ) ; offset += 6 ; length -= 6 ; if ( ! pbody -> cf_present ) { pbody -> cf = cf ; pbody -> cf_present = 1 ; } break ; case E_TIM : memcpy ( & tim , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( tim . length <= 3 ) { offset += tim . length ; length -= tim . length ; break ; } if ( tim . length - 3 > ( int ) sizeof tim . bitmap ) return 0 ; memcpy ( & tim . count , p + offset , 3 ) ; offset += 3 ; length -= 3 ; <S2SV_StartBug> memcpy ( tim . bitmap , p + offset + 3 , tim . length - 3 ) ; <S2SV_EndBug> offset += tim . length - 3 ; length -= tim . length - 3 ; if ( ! pbody -> tim_present ) { pbody -> tim = tim ; pbody -> tim_present = 1 ; } break ; default : # if 0 ND_PRINT ( ( ndo , \"(1)<S2SV_blank>unhandled<S2SV_blank>element_id<S2SV_blank>(%d)<S2SV_blank><S2SV_blank>\" , * ( p + offset ) ) ) ; # endif offset += 2 + elementlen ; length -= 2 + elementlen ; break ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; <S2SV_ModEnd> memcpy ( & <S2SV_ModStart> return 0 ; <S2SV_ModEnd> memcpy ( & <S2SV_ModStart> return 0 ; <S2SV_ModEnd> memcpy ( & <S2SV_ModStart> p + offset <S2SV_ModEnd> , tim .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13015\n\n```\nCWE-125 void eap_print ( netdissect_options * ndo , register const u_char * cp , u_int length ) { const struct eap_frame_t * eap ; const u_char * tptr ; u_int tlen , type , subtype ; int count = 0 , len ; tptr = cp ; tlen = length ; eap = ( const struct eap_frame_t * ) cp ; ND_TCHECK ( * eap ) ; if ( ndo -> ndo_vflag < 1 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%u)<S2SV_blank>v%u,<S2SV_blank>len<S2SV_blank>%u\" , tok2str ( eap_frame_type_values , \"unknown\" , eap -> type ) , eap -> type , eap -> version , EXTRACT_16BITS ( eap -> length ) ) ) ; return ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%u)<S2SV_blank>v%u,<S2SV_blank>len<S2SV_blank>%u\" , tok2str ( eap_frame_type_values , \"unknown\" , eap -> type ) , eap -> type , eap -> version , EXTRACT_16BITS ( eap -> length ) ) ) ; tptr += sizeof ( const struct eap_frame_t ) ; tlen -= sizeof ( const struct eap_frame_t ) ; switch ( eap -> type ) { case EAP_FRAME_TYPE_PACKET : <S2SV_StartBug> type = * ( tptr ) ; <S2SV_EndBug> len = EXTRACT_16BITS ( tptr + 2 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>id<S2SV_blank>%u,<S2SV_blank>len<S2SV_blank>%u\" , tok2str ( eap_code_values , \"unknown\" , type ) , type , * ( tptr + 1 ) , len ) ) ; ND_TCHECK2 ( * tptr , len ) ; if ( type <= 2 ) { <S2SV_StartBug> subtype = * ( tptr + 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>Type<S2SV_blank>%s<S2SV_blank>(%u)\" , <S2SV_StartBug> tok2str ( eap_type_values , \"unknown\" , * ( tptr + 4 ) ) , <S2SV_EndBug> * ( tptr + 4 ) ) ) ; switch ( subtype ) { case EAP_TYPE_IDENTITY : if ( len - 5 > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Identity:<S2SV_blank>\" ) ) ; safeputs ( ndo , tptr + 5 , len - 5 ) ; } break ; case EAP_TYPE_NOTIFICATION : if ( len - 5 > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Notification:<S2SV_blank>\" ) ) ; safeputs ( ndo , tptr + 5 , len - 5 ) ; } break ; case EAP_TYPE_NAK : count = 5 ; while ( count < len ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%s<S2SV_blank>(%u),\" , <S2SV_EndBug> tok2str ( eap_type_values , \"unknown\" , * ( tptr + count ) ) , * ( tptr + count ) ) ) ; count ++ ; } break ; case EAP_TYPE_TTLS : <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>TTLSv%u\" , <S2SV_EndBug> EAP_TTLS_VERSION ( * ( tptr + 5 ) ) ) ) ; <S2SV_StartBug> case EAP_TYPE_TLS : <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>flags<S2SV_blank>[%s]<S2SV_blank>0x%02x,\" , bittok2str ( eap_tls_flags_values , \"none\" , * ( tptr + 5 ) ) , * ( tptr + 5 ) ) ) ; if ( EAP_TLS_EXTRACT_BIT_L ( * ( tptr + 5 ) ) ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>len<S2SV_blank>%u\" , EXTRACT_32BITS ( tptr + 6 ) ) ) ; <S2SV_EndBug> } break ; case EAP_TYPE_FAST : <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>FASTv%u\" , <S2SV_EndBug> EAP_TTLS_VERSION ( * ( tptr + 5 ) ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>flags<S2SV_blank>[%s]<S2SV_blank>0x%02x,\" , bittok2str ( eap_tls_flags_values , \"none\" , * ( tptr + 5 ) ) , * ( tptr + 5 ) ) ) ; if ( EAP_TLS_EXTRACT_BIT_L ( * ( tptr + 5 ) ) ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>len<S2SV_blank>%u\" , EXTRACT_32BITS ( tptr + 6 ) ) ) ; <S2SV_EndBug> } break ; case EAP_TYPE_AKA : case EAP_TYPE_SIM : <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>subtype<S2SV_blank>[%s]<S2SV_blank>0x%02x,\" , <S2SV_EndBug> tok2str ( eap_aka_subtype_values , \"unknown\" , * ( tptr + 5 ) ) , * ( tptr + 5 ) ) ) ; break ; case EAP_TYPE_MD5_CHALLENGE : case EAP_TYPE_OTP : case EAP_TYPE_GTC : case EAP_TYPE_EXPANDED_TYPES : case EAP_TYPE_EXPERIMENTAL : default : break ; } } break ; case EAP_FRAME_TYPE_LOGOFF : case EAP_FRAME_TYPE_ENCAP_ASF_ALERT : default : break ; } return ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t[|EAP]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case EAP_FRAME_TYPE_PACKET : ND_TCHECK_8BITS ( tptr ) ; <S2SV_ModStart> * ( tptr ) ; ND_TCHECK_16BITS ( tptr + 2 <S2SV_ModStart> 2 ) { ND_TCHECK_8BITS ( tptr + 4 ) ; <S2SV_ModStart> , \"unknown\" , subtype ) , subtype <S2SV_ModEnd> ) ) ; <S2SV_ModStart> len ) { ND_TCHECK_8BITS ( tptr + count ) ; <S2SV_ModStart> case EAP_TYPE_TTLS : case EAP_TYPE_TLS : ND_TCHECK_8BITS ( tptr + 5 ) ; if ( subtype == EAP_TYPE_TTLS ) <S2SV_ModStart> ) ) ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) { ND_TCHECK_32BITS ( tptr + 6 ) ; <S2SV_ModStart> case EAP_TYPE_FAST : ND_TCHECK_8BITS ( tptr + 5 ) ; <S2SV_ModStart> ) ) { ND_TCHECK_32BITS ( tptr + 6 ) ; <S2SV_ModStart> case EAP_TYPE_SIM : ND_TCHECK_8BITS ( tptr + 5 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8649\n\n```\nCWE-264 <S2SV_StartBug> int lsm_set_label_at ( int procfd , int on_exec , char * lsm_label ) { <S2SV_EndBug> <S2SV_StartBug> int labelfd = - 1 ; <S2SV_EndBug> int ret = 0 ; const char * name ; char * command = NULL ; name = lsm_name ( ) ; if ( strcmp ( name , \"nop\" ) == 0 ) <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( strcmp ( name , \"none\" ) == 0 ) <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( strcmp ( name , \"AppArmor\" ) == 0 ) on_exec = 0 ; <S2SV_StartBug> if ( on_exec ) { <S2SV_EndBug> labelfd = openat ( procfd , \"self/attr/exec\" , O_RDWR ) ; } else { labelfd = openat ( procfd , \"self/attr/current\" , O_RDWR ) ; } if ( labelfd < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>LSM<S2SV_blank>label\" ) ; ret = - 1 ; goto out ; } if ( strcmp ( name , \"AppArmor\" ) == 0 ) { int size ; command = malloc ( strlen ( lsm_label ) + strlen ( \"changeprofile<S2SV_blank>\" ) + 1 ) ; if ( ! command ) { SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>write<S2SV_blank>apparmor<S2SV_blank>profile\" ) ; <S2SV_StartBug> ret = - 1 ; <S2SV_EndBug> goto out ; } size = sprintf ( command , \"changeprofile<S2SV_blank>%s\" , lsm_label ) ; if ( size < 0 ) { SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>write<S2SV_blank>apparmor<S2SV_blank>profile\" ) ; <S2SV_StartBug> ret = - 1 ; <S2SV_EndBug> goto out ; } <S2SV_StartBug> if ( write ( labelfd , command , size + 1 ) < 0 ) { <S2SV_EndBug> <S2SV_StartBug> SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>LSM<S2SV_blank>label\" ) ; <S2SV_EndBug> <S2SV_StartBug> ret = - 1 ; <S2SV_EndBug> goto out ; } } else if ( strcmp ( name , \"SELinux\" ) == 0 ) { if ( write ( labelfd , lsm_label , strlen ( lsm_label ) + 1 ) < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>LSM<S2SV_blank>label\" ) ; ret = - 1 ; goto out ; } } else { ERROR ( \"Unable<S2SV_blank>to<S2SV_blank>restore<S2SV_blank>label<S2SV_blank>for<S2SV_blank>unknown<S2SV_blank>LSM:<S2SV_blank>%s\" , name ) ; <S2SV_StartBug> ret = - 1 ; <S2SV_EndBug> goto out ; } out : free ( command ) ; <S2SV_StartBug> if ( labelfd != - 1 ) <S2SV_EndBug> <S2SV_StartBug> close ( labelfd ) ; <S2SV_EndBug> <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> lsm_set_label_at ( int lsm_labelfd <S2SV_ModEnd> , int on_exec <S2SV_ModStart> * lsm_label ) { int fret <S2SV_ModEnd> = - 1 <S2SV_ModStart> = - 1 <S2SV_ModEnd> ; const char <S2SV_ModStart> == 0 ) return 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> == 0 ) return 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( strcmp <S2SV_ModStart> \"Failed<S2SV_blank>to<S2SV_blank>write<S2SV_blank>apparmor<S2SV_blank>profile\" ) ; <S2SV_ModEnd> goto out ; <S2SV_ModStart> \"Failed<S2SV_blank>to<S2SV_blank>write<S2SV_blank>apparmor<S2SV_blank>profile\" ) ; <S2SV_ModEnd> goto out ; <S2SV_ModStart> ( write ( lsm_labelfd <S2SV_ModEnd> , command , <S2SV_ModStart> { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>LSM<S2SV_blank>label:<S2SV_blank>%s.\" , command ) ; goto out ; } INFO ( \"Set<S2SV_blank>LSM<S2SV_blank>label<S2SV_blank>to:<S2SV_blank>%s.\" , command ) ; } else if ( strcmp ( name , \"SELinux\" ) == 0 ) { if ( write ( lsm_labelfd , lsm_label , strlen ( lsm_label ) + 1 ) < 0 ) { SYSERROR ( <S2SV_ModStart> \"Unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>LSM<S2SV_blank>label\" ) ; goto out ; } INFO ( \"Set<S2SV_blank>LSM<S2SV_blank>label<S2SV_blank>to:<S2SV_blank>%s.\" , lsm_label ) ; } else <S2SV_ModEnd> { ERROR ( <S2SV_ModStart> name ) ; goto out ; } fret = 0 ; <S2SV_ModEnd> out : free <S2SV_ModStart> ; if ( lsm_labelfd <S2SV_ModEnd> != - 1 <S2SV_ModStart> ) close ( lsm_labelfd <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return fret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_write_message_fields ( wStream * s , NTLM_MESSAGE_FIELDS * fields ) <S2SV_EndBug> { if ( fields -> MaxLen < 1 ) fields -> MaxLen = fields -> Len ; Stream_Write_UINT16 ( s , fields -> Len ) ; Stream_Write_UINT16 ( s , fields -> MaxLen ) ; Stream_Write_UINT32 ( s , fields -> BufferOffset ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6367\n\n```\nCWE-189 static u32 apic_get_tmcct ( struct kvm_lapic * apic ) { ktime_t remaining ; s64 ns ; u32 tmcct ; ASSERT ( apic != NULL ) ; <S2SV_StartBug> if ( kvm_apic_get_reg ( apic , APIC_TMICT ) == 0 ) <S2SV_EndBug> return 0 ; remaining = hrtimer_get_remaining ( & apic -> lapic_timer . timer ) ; if ( ktime_to_ns ( remaining ) < 0 ) remaining = ktime_set ( 0 , 0 ) ; ns = mod_64 ( ktime_to_ns ( remaining ) , apic -> lapic_timer . period ) ; tmcct = div64_u64 ( ns , ( APIC_BUS_CYCLE_NS * apic -> divide_count ) ) ; return tmcct ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , APIC_TMICT ) == 0 || apic -> lapic_timer . period\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20636\n\n```\nCWE-787 static int input_default_setkeycode ( struct input_dev * dev , const struct input_keymap_entry * ke , unsigned int * old_keycode ) { unsigned int index ; int error ; int i ; if ( ! dev -> keycodesize ) return - EINVAL ; if ( ke -> flags & INPUT_KEYMAP_BY_INDEX ) { index = ke -> index ; } else { error = input_scancode_to_scalar ( ke , & index ) ; if ( error ) return error ; } if ( index >= dev -> keycodemax ) return - EINVAL ; if ( dev -> keycodesize < sizeof ( ke -> keycode ) && ( ke -> keycode >> ( dev -> keycodesize * 8 ) ) ) return - EINVAL ; switch ( dev -> keycodesize ) { case 1 : { u8 * k = ( u8 * ) dev -> keycode ; * old_keycode = k [ index ] ; k [ index ] = ke -> keycode ; break ; } case 2 : { u16 * k = ( u16 * ) dev -> keycode ; * old_keycode = k [ index ] ; k [ index ] = ke -> keycode ; break ; } default : { u32 * k = ( u32 * ) dev -> keycode ; * old_keycode = k [ index ] ; k [ index ] = ke -> keycode ; break ; } } <S2SV_StartBug> __clear_bit ( * old_keycode , dev -> keybit ) ; <S2SV_EndBug> <S2SV_StartBug> __set_bit ( ke -> keycode , dev -> keybit ) ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < dev -> keycodemax ; i ++ ) { <S2SV_EndBug> if ( input_fetch_keycode ( dev , i ) == * old_keycode ) { __set_bit ( * old_keycode , dev -> keybit ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( * old_keycode <= KEY_MAX ) { <S2SV_ModStart> keybit ) ; for ( i = 0 ; i < dev -> keycodemax ; i ++ ) { if ( input_fetch_keycode ( dev , i ) == * old_keycode ) { __set_bit ( * old_keycode <S2SV_ModEnd> , dev -> <S2SV_ModStart> keybit ) ; break ; } } } __set_bit ( ke -> keycode , dev -> keybit ) ; return 0 ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void <S2SV_StartBug> l2tp_accm_print ( netdissect_options * ndo , const u_char * dat ) <S2SV_EndBug> { const uint16_t * ptr = ( const uint16_t * ) dat ; uint16_t val_h , val_l ; <S2SV_StartBug> ptr ++ ; <S2SV_EndBug> val_h = EXTRACT_16BITS ( ptr ) ; ptr ++ ; val_l = EXTRACT_16BITS ( ptr ) ; ptr ++ ; ND_PRINT ( ( ndo , \"send=%08x<S2SV_blank>\" , ( val_h << 16 ) + val_l ) ) ; <S2SV_StartBug> val_h = EXTRACT_16BITS ( ptr ) ; ptr ++ ; <S2SV_EndBug> val_l = EXTRACT_16BITS ( ptr ) ; ptr ++ ; ND_PRINT ( ( ndo , \"recv=%08x<S2SV_blank>\" , ( val_h << 16 ) + val_l ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_char * dat , u_int length <S2SV_ModStart> , val_l ; if ( length < 2 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; } ptr ++ ; length -= 2 ; if ( length < 4 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; } val_h = EXTRACT_16BITS ( ptr ) ; ptr ++ ; length -= 2 ; val_l = EXTRACT_16BITS ( ptr ) ; ptr ++ ; length -= 2 <S2SV_ModEnd> ; ND_PRINT ( <S2SV_ModStart> ) ) ; if ( length < 4 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7509\n\n```\nCWE-20 int ext4_orphan_del ( handle_t * handle , struct inode * inode ) { struct list_head * prev ; struct ext4_inode_info * ei = EXT4_I ( inode ) ; struct ext4_sb_info * sbi ; __u32 ino_next ; struct ext4_iloc iloc ; int err = 0 ; <S2SV_StartBug> if ( handle && ! ext4_handle_valid ( handle ) ) <S2SV_EndBug> return 0 ; mutex_lock ( & EXT4_SB ( inode -> i_sb ) -> s_orphan_lock ) ; if ( list_empty ( & ei -> i_orphan ) ) goto out ; ino_next = NEXT_ORPHAN ( inode ) ; prev = ei -> i_orphan . prev ; sbi = EXT4_SB ( inode -> i_sb ) ; jbd_debug ( 4 , \"remove<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>from<S2SV_blank>orphan<S2SV_blank>list\\\\n\" , inode -> i_ino ) ; list_del_init ( & ei -> i_orphan ) ; <S2SV_StartBug> if ( sbi -> s_journal && ! handle ) <S2SV_EndBug> goto out ; err = ext4_reserve_inode_write ( handle , inode , & iloc ) ; if ( err ) goto out_err ; if ( prev == & sbi -> s_orphan ) { jbd_debug ( 4 , \"superblock<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%u\\\\n\" , ino_next ) ; BUFFER_TRACE ( sbi -> s_sbh , \"get_write_access\" ) ; err = ext4_journal_get_write_access ( handle , sbi -> s_sbh ) ; if ( err ) goto out_brelse ; sbi -> s_es -> s_last_orphan = cpu_to_le32 ( ino_next ) ; err = ext4_handle_dirty_super ( handle , inode -> i_sb ) ; } else { struct ext4_iloc iloc2 ; struct inode * i_prev = & list_entry ( prev , struct ext4_inode_info , i_orphan ) -> vfs_inode ; jbd_debug ( 4 , \"orphan<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%u\\\\n\" , i_prev -> i_ino , ino_next ) ; err = ext4_reserve_inode_write ( handle , i_prev , & iloc2 ) ; if ( err ) goto out_brelse ; NEXT_ORPHAN ( i_prev ) = ino_next ; err = ext4_mark_iloc_dirty ( handle , i_prev , & iloc2 ) ; } if ( err ) goto out_brelse ; NEXT_ORPHAN ( inode ) = 0 ; err = ext4_mark_iloc_dirty ( handle , inode , & iloc ) ; out_err : ext4_std_error ( inode -> i_sb , err ) ; out : mutex_unlock ( & EXT4_SB ( inode -> i_sb ) -> s_orphan_lock ) ; return err ; out_brelse : brelse ( iloc . bh ) ; goto out_err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! EXT4_SB ( inode -> i_sb ) -> s_journal <S2SV_ModEnd> ) return 0 <S2SV_ModStart> ; if ( <S2SV_ModEnd> ! handle )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000251\n\n```\nCWE-787 static inline int l2cap_config_rsp ( struct l2cap_conn * conn , struct l2cap_cmd_hdr * cmd , u8 * data ) { struct l2cap_conf_rsp * rsp = ( struct l2cap_conf_rsp * ) data ; u16 scid , flags , result ; struct sock * sk ; scid = __le16_to_cpu ( rsp -> scid ) ; flags = __le16_to_cpu ( rsp -> flags ) ; result = __le16_to_cpu ( rsp -> result ) ; BT_DBG ( \"scid<S2SV_blank>0x%4.4x<S2SV_blank>flags<S2SV_blank>0x%2.2x<S2SV_blank>result<S2SV_blank>0x%2.2x\" , scid , flags , result ) ; sk = l2cap_get_chan_by_scid ( & conn -> chan_list , scid ) ; if ( ! sk ) return 0 ; switch ( result ) { case L2CAP_CONF_SUCCESS : break ; case L2CAP_CONF_UNACCEPT : <S2SV_StartBug> if ( ++ l2cap_pi ( sk ) -> conf_retry < L2CAP_CONF_MAX_RETRIES ) { <S2SV_EndBug> char req [ 128 ] ; <S2SV_StartBug> l2cap_send_cmd ( conn , l2cap_get_ident ( conn ) , L2CAP_CONF_REQ , <S2SV_EndBug> l2cap_build_conf_req ( sk , req ) , req ) ; <S2SV_StartBug> goto done ; <S2SV_EndBug> } default : sk -> sk_state = BT_DISCONN ; sk -> sk_err = ECONNRESET ; l2cap_sock_set_timer ( sk , HZ * 5 ) ; { struct l2cap_disconn_req req ; req . dcid = cpu_to_le16 ( l2cap_pi ( sk ) -> dcid ) ; req . scid = cpu_to_le16 ( l2cap_pi ( sk ) -> scid ) ; l2cap_send_cmd ( conn , l2cap_get_ident ( conn ) , L2CAP_DISCONN_REQ , sizeof ( req ) , & req ) ; } goto done ; } if ( flags & 0x01 ) goto done ; l2cap_pi ( sk ) -> conf_state |= L2CAP_CONF_INPUT_DONE ; if ( l2cap_pi ( sk ) -> conf_state & L2CAP_CONF_OUTPUT_DONE ) { sk -> sk_state = BT_CONNECTED ; l2cap_chan_ready ( sk ) ; } done : bh_unlock_sock ( sk ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( l2cap_pi ( sk ) -> num_conf_rsp <= L2CAP_CONF_MAX_CONF_RSP ) { int len = cmd -> len - sizeof ( * rsp ) ; char req [ 64 ] ; result = L2CAP_CONF_SUCCESS ; len = l2cap_parse_conf_rsp ( sk , rsp -> data , len , req , & result ) ; if ( len < 0 ) { struct l2cap_disconn_req req ; req . dcid = cpu_to_le16 ( l2cap_pi ( sk ) -> dcid ) ; req . scid = cpu_to_le16 ( l2cap_pi ( sk ) -> scid ) <S2SV_ModEnd> ; l2cap_send_cmd ( <S2SV_ModStart> conn ) , L2CAP_DISCONN_REQ , sizeof ( req ) , & <S2SV_ModEnd> req ) ; <S2SV_ModStart> ; goto done ; } l2cap_send_cmd ( conn , l2cap_get_ident ( conn ) , L2CAP_CONF_REQ , len , req ) ; l2cap_pi ( sk ) -> num_conf_req ++ ; if ( result != L2CAP_CONF_SUCCESS ) goto done ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5354\n\n```\nCWE-476 static gint dissect_ac_if_hdr_body ( tvbuff_t * tvb , gint offset , packet_info * pinfo _U_ , proto_tree * tree , usb_conv_info_t * usb_conv_info ) { gint offset_start ; guint16 bcdADC ; guint8 ver_major ; double ver ; guint8 if_in_collection , i ; audio_conv_info_t * audio_conv_info ; offset_start = offset ; bcdADC = tvb_get_letohs ( tvb , offset ) ; ver_major = USB_AUDIO_BCD44_TO_DEC ( bcdADC >> 8 ) ; ver = ver_major + USB_AUDIO_BCD44_TO_DEC ( bcdADC & 0xFF ) / 100.0 ; proto_tree_add_double_format_value ( tree , hf_ac_if_hdr_ver , tvb , offset , 2 , ver , \"%2.2f\" , ver ) ; audio_conv_info = ( audio_conv_info_t * ) usb_conv_info -> class_data ; if ( ! audio_conv_info ) { audio_conv_info = wmem_new ( wmem_file_scope ( ) , audio_conv_info_t ) ; usb_conv_info -> class_data = audio_conv_info ; <S2SV_StartBug> } <S2SV_EndBug> audio_conv_info -> ver_major = ver_major ; offset += 2 ; if ( ver_major == 1 ) { proto_tree_add_item ( tree , hf_ac_if_hdr_total_len , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; offset += 2 ; if_in_collection = tvb_get_guint8 ( tvb , offset ) ; proto_tree_add_item ( tree , hf_ac_if_hdr_bInCollection , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; offset ++ ; for ( i = 0 ; i < if_in_collection ; i ++ ) { proto_tree_add_item ( tree , hf_ac_if_hdr_if_num , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; offset ++ ; } } return offset - offset_start ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = audio_conv_info ; usb_conv_info -> class_data_type = USB_CONV_AUDIO ; } else if ( usb_conv_info -> class_data_type != USB_CONV_AUDIO ) { return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11088\n\n```\nCWE-125 SECURITY_STATUS ntlm_read_NegotiateMessage ( NTLM_CONTEXT * context , PSecBuffer buffer ) { wStream * s ; size_t length ; NTLM_NEGOTIATE_MESSAGE * message ; message = & context -> NEGOTIATE_MESSAGE ; ZeroMemory ( message , sizeof ( NTLM_NEGOTIATE_MESSAGE ) ) ; s = Stream_New ( ( BYTE * ) buffer -> pvBuffer , buffer -> cbBuffer ) ; if ( ! s ) return SEC_E_INTERNAL_ERROR ; if ( ntlm_read_message_header ( s , ( NTLM_MESSAGE_HEADER * ) message ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( message -> MessageType != MESSAGE_TYPE_NEGOTIATE ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } <S2SV_StartBug> Stream_Read_UINT32 ( s , message -> NegotiateFlags ) ; <S2SV_EndBug> if ( ! ( ( message -> NegotiateFlags & NTLMSSP_REQUEST_TARGET ) && ( message -> NegotiateFlags & NTLMSSP_NEGOTIATE_NTLM ) && ( message -> NegotiateFlags & NTLMSSP_NEGOTIATE_UNICODE ) ) ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } context -> NegotiateFlags = message -> NegotiateFlags ; if ( ntlm_read_message_fields ( s , & ( message -> DomainName ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( ntlm_read_message_fields ( s , & ( message -> Workstation ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } if ( message -> NegotiateFlags & NTLMSSP_NEGOTIATE_VERSION ) { if ( ntlm_read_version_info ( s , & ( message -> Version ) ) < 0 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; } } length = Stream_GetPosition ( s ) ; buffer -> cbBuffer = length ; if ( ! sspi_SecBufferAlloc ( & context -> NegotiateMessage , length ) ) { Stream_Free ( s , FALSE ) ; return SEC_E_INTERNAL_ERROR ; } CopyMemory ( context -> NegotiateMessage . pvBuffer , buffer -> pvBuffer , buffer -> cbBuffer ) ; context -> NegotiateMessage . BufferType = buffer -> BufferType ; # ifdef WITH_DEBUG_NTLM WLog_DBG ( TAG , \"NEGOTIATE_MESSAGE<S2SV_blank>(length<S2SV_blank>=<S2SV_blank>%\" PRIu32 \")\" , context -> NegotiateMessage . cbBuffer ) ; winpr_HexDump ( TAG , WLOG_DEBUG , context -> NegotiateMessage . pvBuffer , context -> NegotiateMessage . cbBuffer ) ; ntlm_print_negotiate_flags ( message -> NegotiateFlags ) ; if ( message -> NegotiateFlags & NTLMSSP_NEGOTIATE_VERSION ) ntlm_print_version_info ( & ( message -> Version ) ) ; # endif context -> state = NTLM_STATE_CHALLENGE ; Stream_Free ( s , FALSE ) ; return SEC_I_CONTINUE_NEEDED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SEC_E_INVALID_TOKEN ; } if ( Stream_GetRemainingLength ( s ) < 4 ) { Stream_Free ( s , FALSE ) ; return SEC_E_INVALID_TOKEN ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-704(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18386\n\n```\nCWE-704 static void n_tty_set_termios ( struct tty_struct * tty , struct ktermios * old ) { struct n_tty_data * ldata = tty -> disc_data ; <S2SV_StartBug> if ( ! old || ( old -> c_lflag ^ tty -> termios . c_lflag ) & ICANON ) { <S2SV_EndBug> bitmap_zero ( ldata -> read_flags , N_TTY_BUF_SIZE ) ; ldata -> line_start = ldata -> read_tail ; if ( ! L_ICANON ( tty ) || ! read_cnt ( ldata ) ) { ldata -> canon_head = ldata -> read_tail ; ldata -> push = 0 ; } else { set_bit ( ( ldata -> read_head - 1 ) & ( N_TTY_BUF_SIZE - 1 ) , ldata -> read_flags ) ; ldata -> canon_head = ldata -> read_head ; ldata -> push = 1 ; } ldata -> commit_head = ldata -> read_head ; ldata -> erasing = 0 ; ldata -> lnext = 0 ; } ldata -> icanon = ( L_ICANON ( tty ) != 0 ) ; if ( I_ISTRIP ( tty ) || I_IUCLC ( tty ) || I_IGNCR ( tty ) || I_ICRNL ( tty ) || I_INLCR ( tty ) || L_ICANON ( tty ) || I_IXON ( tty ) || L_ISIG ( tty ) || L_ECHO ( tty ) || I_PARMRK ( tty ) ) { bitmap_zero ( ldata -> char_map , 256 ) ; if ( I_IGNCR ( tty ) || I_ICRNL ( tty ) ) set_bit ( '\\\\r' , ldata -> char_map ) ; if ( I_INLCR ( tty ) ) set_bit ( '\\\\n' , ldata -> char_map ) ; if ( L_ICANON ( tty ) ) { set_bit ( ERASE_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( KILL_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( EOF_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( '\\\\n' , ldata -> char_map ) ; set_bit ( EOL_CHAR ( tty ) , ldata -> char_map ) ; if ( L_IEXTEN ( tty ) ) { set_bit ( WERASE_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( LNEXT_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( EOL2_CHAR ( tty ) , ldata -> char_map ) ; if ( L_ECHO ( tty ) ) set_bit ( REPRINT_CHAR ( tty ) , ldata -> char_map ) ; } } if ( I_IXON ( tty ) ) { set_bit ( START_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( STOP_CHAR ( tty ) , ldata -> char_map ) ; } if ( L_ISIG ( tty ) ) { set_bit ( INTR_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( QUIT_CHAR ( tty ) , ldata -> char_map ) ; set_bit ( SUSP_CHAR ( tty ) , ldata -> char_map ) ; } clear_bit ( __DISABLED_CHAR , ldata -> char_map ) ; ldata -> raw = 0 ; ldata -> real_raw = 0 ; } else { ldata -> raw = 1 ; if ( ( I_IGNBRK ( tty ) || ( ! I_BRKINT ( tty ) && ! I_PARMRK ( tty ) ) ) && ( I_IGNPAR ( tty ) || ! I_INPCK ( tty ) ) && ( tty -> driver -> flags & TTY_DRIVER_REAL_RAW ) ) ldata -> real_raw = 1 ; else ldata -> real_raw = 0 ; } if ( ! I_IXON ( tty ) && old && ( old -> c_iflag & IXON ) && ! tty -> flow_stopped ) { start_tty ( tty ) ; process_echoes ( tty ) ; } wake_up_interruptible ( & tty -> write_wait ) ; wake_up_interruptible ( & tty -> read_wait ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c_lflag ) & ( ICANON | EXTPROC ) <S2SV_ModEnd> ) { bitmap_zero\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 static gchar * read_file ( gchar * filepath ) { FILE * f ; size_t length ; gchar * ret = NULL ; <S2SV_StartBug> f = fopen ( filepath , \"rb\" ) ; <S2SV_EndBug> if ( f ) { fseek ( f , 0 , SEEK_END ) ; length = ( size_t ) ftell ( f ) ; fseek ( f , 0 , SEEK_SET ) ; ret = MALLOC ( length + 1 ) ; if ( ret ) { if ( fread ( ret , length , 1 , f ) != 1 ) { log_message ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>all<S2SV_blank>of<S2SV_blank>%s\" , filepath ) ; } ret [ length ] = '\\\\0' ; } else log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>Dbus<S2SV_blank>file<S2SV_blank>%s\" , filepath ) ; fclose ( f ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( filepath , \"r\" <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static node * parsetok ( struct tok_state * tok , grammar * g , int start , perrdetail * err_ret , int * flags ) { parser_state * ps ; node * n ; int started = 0 ; growable_int_array type_ignores ; if ( ! growable_int_array_init ( & type_ignores , 10 ) ) { err_ret -> error = E_NOMEM ; Ta3Tokenizer_Free ( tok ) ; return NULL ; } if ( ( ps = Ta3Parser_New ( g , start ) ) == NULL ) { err_ret -> error = E_NOMEM ; Ta3Tokenizer_Free ( tok ) ; return NULL ; } # ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD if ( * flags & PyPARSE_BARRY_AS_BDFL ) ps -> p_flags |= CO_FUTURE_BARRY_AS_BDFL ; # endif for ( ; ; ) { char * a , * b ; int type ; size_t len ; char * str ; int col_offset ; type = Ta3Tokenizer_Get ( tok , & a , & b ) ; if ( type == ERRORTOKEN ) { err_ret -> error = tok -> done ; break ; } if ( type == ENDMARKER && started ) { type = NEWLINE ; started = 0 ; if ( tok -> indent && ! ( * flags & PyPARSE_DONT_IMPLY_DEDENT ) ) { tok -> pendin = - tok -> indent ; tok -> indent = 0 ; } } else started = 1 ; <S2SV_StartBug> len = b - a ; <S2SV_EndBug> str = ( char * ) PyObject_MALLOC ( len + 1 ) ; if ( str == NULL ) { err_ret -> error = E_NOMEM ; break ; } if ( len > 0 ) strncpy ( str , a , len ) ; str [ len ] = '\\\\0' ; # ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD if ( type == NOTEQUAL ) { if ( ! ( ps -> p_flags & CO_FUTURE_BARRY_AS_BDFL ) && strcmp ( str , \"!=\" ) ) { PyObject_FREE ( str ) ; err_ret -> error = E_SYNTAX ; break ; } else if ( ( ps -> p_flags & CO_FUTURE_BARRY_AS_BDFL ) && strcmp ( str , \"<>\" ) ) { PyObject_FREE ( str ) ; <S2SV_StartBug> err_ret -> text = \"with<S2SV_blank>Barry<S2SV_blank>as<S2SV_blank>BDFL,<S2SV_blank>use<S2SV_blank>\\'<>\\'<S2SV_blank>\" <S2SV_EndBug> \"instead<S2SV_blank>of<S2SV_blank>\\'!=\\'\" ; err_ret -> error = E_SYNTAX ; break ; } } # endif <S2SV_StartBug> if ( a >= tok -> line_start ) <S2SV_EndBug> col_offset = Py_SAFE_DOWNCAST ( a - tok -> line_start , intptr_t , int ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> col_offset = - 1 ; <S2SV_EndBug> if ( type == TYPE_IGNORE ) { if ( ! growable_int_array_add ( & type_ignores , tok -> lineno ) ) { err_ret -> error = E_NOMEM ; break ; } continue ; } if ( ( err_ret -> error = Ta3Parser_AddToken ( ps , ( int ) type , str , tok -> lineno , col_offset , & ( err_ret -> expected ) ) ) != E_OK ) { if ( err_ret -> error != E_DONE ) { PyObject_FREE ( str ) ; err_ret -> token = type ; } break ; } } if ( err_ret -> error == E_DONE ) { n = ps -> p_tree ; ps -> p_tree = NULL ; if ( n -> n_type == file_input ) { int num ; node * ch ; size_t i ; num = NCH ( n ) ; ch = CHILD ( n , num - 1 ) ; REQ ( ch , ENDMARKER ) ; for ( i = 0 ; i < type_ignores . num_items ; i ++ ) { Ta3Node_AddChild ( ch , TYPE_IGNORE , NULL , type_ignores . items [ i ] , 0 ) ; } } growable_int_array_deallocate ( & type_ignores ) ; # ifndef PGEN if ( start == single_input ) { char * cur = tok -> cur ; char c = * tok -> cur ; for ( ; ; ) { while ( c == '<S2SV_blank>' || c == '\\\\t' || c == '\\\\n' || c == '\\\\014' ) c = * ++ cur ; if ( ! c ) break ; if ( c != '#' ) { err_ret -> error = E_BADSINGLE ; Ta3Node_Free ( n ) ; n = NULL ; break ; } while ( c && c != '\\\\n' ) c = * ++ cur ; } } # endif } else n = NULL ; # ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD * flags = ps -> p_flags ; # endif Ta3Parser_Delete ( ps ) ; if ( n == NULL ) { if ( tok -> done == E_EOF ) err_ret -> error = E_EOF ; err_ret -> lineno = tok -> lineno ; if ( tok -> buf != NULL ) { size_t len ; assert ( tok -> cur - tok -> buf < INT_MAX ) ; err_ret -> offset = ( int ) ( tok -> cur - tok -> buf ) ; len = tok -> inp - tok -> buf ; err_ret -> text = ( char * ) PyObject_MALLOC ( len + 1 ) ; if ( err_ret -> text != NULL ) { if ( len > 0 ) strncpy ( err_ret -> text , tok -> buf , len ) ; err_ret -> text [ len ] = '\\\\0' ; } } } else if ( tok -> encoding != NULL ) { node * r = Ta3Node_New ( encoding_decl ) ; if ( r ) r -> n_str = PyObject_MALLOC ( strlen ( tok -> encoding ) + 1 ) ; if ( ! r || ! r -> n_str ) { err_ret -> error = E_NOMEM ; if ( r ) PyObject_FREE ( r ) ; n = NULL ; goto done ; } strcpy ( r -> n_str , tok -> encoding ) ; PyMem_FREE ( tok -> encoding ) ; tok -> encoding = NULL ; r -> n_nchildren = 1 ; r -> n_child = n ; n = r ; } done : Ta3Tokenizer_Free ( tok ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; len = ( a != NULL && b != NULL ) ? <S2SV_ModStart> b - a : 0 <S2SV_ModStart> ; err_ret -> expected = NOTEQUAL <S2SV_ModEnd> ; err_ret -> <S2SV_ModStart> if ( a != NULL && a <S2SV_ModStart> -> line_start ) { <S2SV_ModStart> int ) ; } else { <S2SV_ModEnd> col_offset = - <S2SV_ModStart> - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13012\n\n```\nCWE-125 void icmp_print ( netdissect_options * ndo , const u_char * bp , u_int plen , const u_char * bp2 , int fragmented ) { char * cp ; const struct icmp * dp ; const struct icmp_ext_t * ext_dp ; const struct ip * ip ; const char * str , * fmt ; const struct ip * oip ; const struct udphdr * ouh ; const uint8_t * obj_tptr ; uint32_t raw_label ; const u_char * snapend_save ; const struct icmp_mpls_ext_object_header_t * icmp_mpls_ext_object_header ; u_int hlen , dport , mtu , obj_tlen , obj_class_num , obj_ctype ; char buf [ MAXHOSTNAMELEN + 100 ] ; struct cksum_vec vec [ 1 ] ; dp = ( const struct icmp * ) bp ; ext_dp = ( const struct icmp_ext_t * ) bp ; ip = ( const struct ip * ) bp2 ; str = buf ; ND_TCHECK ( dp -> icmp_code ) ; switch ( dp -> icmp_type ) { case ICMP_ECHO : case ICMP_ECHOREPLY : ND_TCHECK ( dp -> icmp_seq ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"echo<S2SV_blank>%s,<S2SV_blank>id<S2SV_blank>%u,<S2SV_blank>seq<S2SV_blank>%u\" , dp -> icmp_type == ICMP_ECHO ? \"request\" : \"reply\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) ) ; break ; case ICMP_UNREACH : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; switch ( dp -> icmp_code ) { case ICMP_UNREACH_PROTOCOL : ND_TCHECK ( dp -> icmp_ip . ip_p ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , dp -> icmp_ip . ip_p ) ; break ; case ICMP_UNREACH_PORT : ND_TCHECK ( dp -> icmp_ip . ip_p ) ; oip = & dp -> icmp_ip ; hlen = IP_HL ( oip ) * 4 ; ouh = ( const struct udphdr * ) ( ( ( const u_char * ) oip ) + hlen ) ; ND_TCHECK ( ouh -> uh_dport ) ; dport = EXTRACT_16BITS ( & ouh -> uh_dport ) ; switch ( oip -> ip_p ) { case IPPROTO_TCP : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>tcp<S2SV_blank>port<S2SV_blank>%s<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ; break ; case IPPROTO_UDP : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>udp<S2SV_blank>port<S2SV_blank>%s<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , udpport_string ( ndo , dport ) ) ; break ; default : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>port<S2SV_blank>%d<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , oip -> ip_p , dport ) ; break ; } break ; case ICMP_UNREACH_NEEDFRAG : { register const struct mtu_discovery * mp ; mp = ( const struct mtu_discovery * ) ( const u_char * ) & dp -> icmp_void ; mtu = EXTRACT_16BITS ( & mp -> nexthopmtu ) ; if ( mtu ) { ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>unreachable<S2SV_blank>-<S2SV_blank>need<S2SV_blank>to<S2SV_blank>frag<S2SV_blank>(mtu<S2SV_blank>%d)\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , mtu ) ; } else { ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>unreachable<S2SV_blank>-<S2SV_blank>need<S2SV_blank>to<S2SV_blank>frag\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) ) ; } } break ; default : fmt = tok2str ( unreach2str , \"#%d<S2SV_blank>%%s<S2SV_blank>unreachable\" , dp -> icmp_code ) ; ( void ) snprintf ( buf , sizeof ( buf ) , fmt , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) ) ; break ; } break ; case ICMP_REDIRECT : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; fmt = tok2str ( type2str , \"redirect-#%d<S2SV_blank>%%s<S2SV_blank>to<S2SV_blank>net<S2SV_blank>%%s\" , dp -> icmp_code ) ; ( void ) snprintf ( buf , sizeof ( buf ) , fmt , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , ipaddr_string ( ndo , & dp -> icmp_gwaddr ) ) ; break ; case ICMP_ROUTERADVERT : { register const struct ih_rdiscovery * ihp ; register const struct id_rdiscovery * idp ; u_int lifetime , num , size ; ( void ) snprintf ( buf , sizeof ( buf ) , \"router<S2SV_blank>advertisement\" ) ; cp = buf + strlen ( buf ) ; ihp = ( const struct ih_rdiscovery * ) & dp -> icmp_void ; ND_TCHECK ( * ihp ) ; ( void ) strncpy ( cp , \"<S2SV_blank>lifetime<S2SV_blank>\" , sizeof ( buf ) - ( cp - buf ) ) ; cp = buf + strlen ( buf ) ; lifetime = EXTRACT_16BITS ( & ihp -> ird_lifetime ) ; if ( lifetime < 60 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u\" , lifetime ) ; } else if ( lifetime < 60 * 60 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u:%02u\" , lifetime / 60 , lifetime % 60 ) ; } else { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u:%02u:%02u\" , lifetime / 3600 , ( lifetime % 3600 ) / 60 , lifetime % 60 ) ; } cp = buf + strlen ( buf ) ; num = ihp -> ird_addrnum ; ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>%d:\" , num ) ; cp = buf + strlen ( buf ) ; size = ihp -> ird_addrsiz ; if ( size != 2 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>[size<S2SV_blank>%d]\" , size ) ; break ; } idp = ( const struct id_rdiscovery * ) & dp -> icmp_data ; while ( num -- > 0 ) { ND_TCHECK ( * idp ) ; ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>{%s<S2SV_blank>%u}\" , ipaddr_string ( ndo , & idp -> ird_addr ) , EXTRACT_32BITS ( & idp -> ird_pref ) ) ; cp = buf + strlen ( buf ) ; ++ idp ; } } break ; case ICMP_TIMXCEED : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; switch ( dp -> icmp_code ) { case ICMP_TIMXCEED_INTRANS : str = \"time<S2SV_blank>exceeded<S2SV_blank>in-transit\" ; break ; case ICMP_TIMXCEED_REASS : str = \"ip<S2SV_blank>reassembly<S2SV_blank>time<S2SV_blank>exceeded\" ; break ; default : ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>exceeded-#%d\" , dp -> icmp_code ) ; break ; } break ; case ICMP_PARAMPROB : if ( dp -> icmp_code ) ( void ) snprintf ( buf , sizeof ( buf ) , \"parameter<S2SV_blank>problem<S2SV_blank>-<S2SV_blank>code<S2SV_blank>%d\" , dp -> icmp_code ) ; else { ND_TCHECK ( dp -> icmp_pptr ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"parameter<S2SV_blank>problem<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%d\" , dp -> icmp_pptr ) ; } break ; case ICMP_MASKREPLY : ND_TCHECK ( dp -> icmp_mask ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"address<S2SV_blank>mask<S2SV_blank>is<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & dp -> icmp_mask ) ) ; break ; case ICMP_TSTAMP : ND_TCHECK ( dp -> icmp_seq ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>stamp<S2SV_blank>query<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) ) ; break ; case ICMP_TSTAMPREPLY : ND_TCHECK ( dp -> icmp_ttime ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>stamp<S2SV_blank>reply<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u:<S2SV_blank>org<S2SV_blank>%s\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_otime ) ) ) ; ( void ) snprintf ( buf + strlen ( buf ) , sizeof ( buf ) - strlen ( buf ) , \",<S2SV_blank>recv<S2SV_blank>%s\" , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_rtime ) ) ) ; ( void ) snprintf ( buf + strlen ( buf ) , sizeof ( buf ) - strlen ( buf ) , \",<S2SV_blank>xmit<S2SV_blank>%s\" , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_ttime ) ) ) ; break ; default : str = tok2str ( icmp2str , \"type-#%d\" , dp -> icmp_type ) ; break ; } ND_PRINT ( ( ndo , \"ICMP<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , str , plen ) ) ; if ( ndo -> ndo_vflag && ! fragmented ) { uint16_t sum , icmp_sum ; if ( ND_TTEST2 ( * bp , plen ) ) { vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) dp ; vec [ 0 ] . len = plen ; sum = in_cksum ( vec , 1 ) ; if ( sum != 0 ) { icmp_sum = EXTRACT_16BITS ( & dp -> icmp_cksum ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(wrong<S2SV_blank>icmp<S2SV_blank>cksum<S2SV_blank>%x<S2SV_blank>(->%x)!)\" , icmp_sum , in_cksum_shouldbe ( icmp_sum , sum ) ) ) ; } } } if ( ndo -> ndo_vflag >= 1 && ICMP_ERRTYPE ( dp -> icmp_type ) ) { bp += 8 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; ip = ( const struct ip * ) bp ; <S2SV_StartBug> snapend_save = ndo -> ndo_snapend ; <S2SV_EndBug> ip_print ( ndo , bp , EXTRACT_16BITS ( & ip -> ip_len ) ) ; ndo -> ndo_snapend = snapend_save ; } if ( ndo -> ndo_vflag >= 1 && plen > ICMP_EXTD_MINLEN && ICMP_MPLS_EXT_TYPE ( dp -> icmp_type ) ) { ND_TCHECK ( * ext_dp ) ; if ( ! ext_dp -> icmp_length && ND_TTEST2 ( ext_dp -> icmp_ext_version_res , plen - ICMP_EXTD_MINLEN ) ) { vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) & ext_dp -> icmp_ext_version_res ; vec [ 0 ] . len = plen - ICMP_EXTD_MINLEN ; if ( in_cksum ( vec , 1 ) ) { return ; } } ND_PRINT ( ( ndo , \"\\\\n\\\\tMPLS<S2SV_blank>extension<S2SV_blank>v%u\" , ICMP_MPLS_EXT_EXTRACT_VERSION ( * ( ext_dp -> icmp_ext_version_res ) ) ) ) ; if ( ICMP_MPLS_EXT_EXTRACT_VERSION ( * ( ext_dp -> icmp_ext_version_res ) ) != ICMP_MPLS_EXT_VERSION ) { ND_PRINT ( ( ndo , \"<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" ) ) ; return ; } hlen = plen - ICMP_EXTD_MINLEN ; if ( ND_TTEST2 ( ext_dp -> icmp_ext_version_res , hlen ) ) { vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) & ext_dp -> icmp_ext_version_res ; vec [ 0 ] . len = hlen ; ND_PRINT ( ( ndo , \",<S2SV_blank>checksum<S2SV_blank>0x%04x<S2SV_blank>(%scorrect),<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( ext_dp -> icmp_ext_checksum ) , in_cksum ( vec , 1 ) ? \"in\" : \"\" , hlen ) ) ; } hlen -= 4 ; obj_tptr = ( const uint8_t * ) ext_dp -> icmp_ext_data ; while ( hlen > sizeof ( struct icmp_mpls_ext_object_header_t ) ) { icmp_mpls_ext_object_header = ( const struct icmp_mpls_ext_object_header_t * ) obj_tptr ; ND_TCHECK ( * icmp_mpls_ext_object_header ) ; obj_tlen = EXTRACT_16BITS ( icmp_mpls_ext_object_header -> length ) ; obj_class_num = icmp_mpls_ext_object_header -> class_num ; obj_ctype = icmp_mpls_ext_object_header -> ctype ; obj_tptr += sizeof ( struct icmp_mpls_ext_object_header_t ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Object<S2SV_blank>(%u),<S2SV_blank>Class-Type:<S2SV_blank>%u,<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( icmp_mpls_ext_obj_values , \"unknown\" , obj_class_num ) , obj_class_num , obj_ctype , obj_tlen ) ) ; hlen -= sizeof ( struct icmp_mpls_ext_object_header_t ) ; if ( ( obj_class_num == 0 ) || ( obj_tlen < sizeof ( struct icmp_mpls_ext_object_header_t ) ) ) { return ; } obj_tlen -= sizeof ( struct icmp_mpls_ext_object_header_t ) ; switch ( obj_class_num ) { case 1 : switch ( obj_ctype ) { case 1 : ND_TCHECK2 ( * obj_tptr , 4 ) ; raw_label = EXTRACT_32BITS ( obj_tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>label<S2SV_blank>%u,<S2SV_blank>exp<S2SV_blank>%u\" , MPLS_LABEL ( raw_label ) , MPLS_EXP ( raw_label ) ) ) ; if ( MPLS_STACK ( raw_label ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>[S]\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>ttl<S2SV_blank>%u\" , MPLS_TTL ( raw_label ) ) ) ; break ; default : print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; } break ; case 2 : default : print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( hlen < obj_tlen ) break ; hlen -= obj_tlen ; obj_tptr += obj_tlen ; } } return ; trunc : ND_PRINT ( ( ndo , \"[|icmp]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ndo -> ndo_snapend ; ND_TCHECK_16BITS ( & ip -> ip_len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5232\n\n```\nCWE-362 fm_mgr_config_errno_t fm_mgr_config_mgr_connect ( fm_config_conx_hdl * hdl , fm_mgr_type_t mgr ) { char s_path [ 256 ] ; char c_path [ 256 ] ; char * mgr_prefix ; p_hsm_com_client_hdl_t * mgr_hdl ; <S2SV_StartBug> pid_t pid ; <S2SV_EndBug> memset ( s_path , 0 , sizeof ( s_path ) ) ; <S2SV_StartBug> memset ( c_path , 0 , sizeof ( c_path ) ) ; <S2SV_EndBug> pid = getpid ( ) ; switch ( mgr ) { case FM_MGR_SM : mgr_prefix = HSM_FM_SCK_SM ; mgr_hdl = & hdl -> sm_hdl ; break ; case FM_MGR_PM : mgr_prefix = HSM_FM_SCK_PM ; mgr_hdl = & hdl -> pm_hdl ; break ; case FM_MGR_FE : mgr_prefix = HSM_FM_SCK_FE ; mgr_hdl = & hdl -> fe_hdl ; break ; default : return FM_CONF_INIT_ERR ; } sprintf ( s_path , \"%s%s%d\" , HSM_FM_SCK_PREFIX , mgr_prefix , hdl -> instance ) ; <S2SV_StartBug> sprintf ( c_path , \"%s%s%d_C_%lu\" , HSM_FM_SCK_PREFIX , mgr_prefix , <S2SV_EndBug> <S2SV_StartBug> hdl -> instance , ( long unsigned ) pid ) ; <S2SV_EndBug> if ( * mgr_hdl == NULL ) { if ( hcom_client_init ( mgr_hdl , s_path , c_path , 32768 ) != HSM_COM_OK ) { return FM_CONF_INIT_ERR ; } } if ( hcom_client_connect ( * mgr_hdl ) == HSM_COM_OK ) { hdl -> conx_mask |= mgr ; return FM_CONF_OK ; } return FM_CONF_CONX_ERR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * mgr_hdl ; <S2SV_ModEnd> memset ( s_path <S2SV_ModStart> ( c_path ) <S2SV_ModEnd> ) ; switch <S2SV_ModStart> ( c_path , \"%s%s%d_C_XXXXXX\" <S2SV_ModEnd> , HSM_FM_SCK_PREFIX , <S2SV_ModStart> hdl -> instance <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13039\n\n```\nCWE-125 static const u_char * ikev1_attrmap_print ( netdissect_options * ndo , <S2SV_StartBug> const u_char * p , const u_char * ep , <S2SV_EndBug> const struct attrmap * map , size_t nmap ) { int totlen ; uint32_t t , v ; <S2SV_StartBug> if ( p [ 0 ] & 0x80 ) <S2SV_EndBug> totlen = 4 ; <S2SV_StartBug> else <S2SV_EndBug> totlen = 4 + EXTRACT_16BITS ( & p [ 2 ] ) ; <S2SV_StartBug> if ( ep < p + totlen ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[|attr]\" ) ) ; <S2SV_StartBug> return ep + 1 ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"(\" ) ) ; t = EXTRACT_16BITS ( & p [ 0 ] ) & 0x7fff ; if ( map && t < nmap && map [ t ] . type ) ND_PRINT ( ( ndo , \"type=%s<S2SV_blank>\" , map [ t ] . type ) ) ; else ND_PRINT ( ( ndo , \"type=#%d<S2SV_blank>\" , t ) ) ; if ( p [ 0 ] & 0x80 ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"value=\" ) ) ; <S2SV_EndBug> v = EXTRACT_16BITS ( & p [ 2 ] ) ; if ( map && t < nmap && v < map [ t ] . nvalue && map [ t ] . value [ v ] ) ND_PRINT ( ( ndo , \"%s\" , map [ t ] . value [ v ] ) ) ; else <S2SV_StartBug> rawprint ( ndo , ( const uint8_t * ) & p [ 2 ] , 2 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> ND_PRINT ( ( ndo , \"len=%d<S2SV_blank>value=\" , EXTRACT_16BITS ( & p [ 2 ] ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> rawprint ( ndo , ( const uint8_t * ) & p [ 4 ] , EXTRACT_16BITS ( & p [ 2 ] ) ) ; <S2SV_EndBug> } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_StartBug> return p + totlen ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const u_char * ep2 <S2SV_ModEnd> , const struct <S2SV_ModStart> , v ; ND_TCHECK ( p [ 0 ] ) ; <S2SV_ModStart> 4 ; else { ND_TCHECK_16BITS ( & p [ 2 ] ) ; <S2SV_ModStart> ] ) ; } if ( ep2 <S2SV_ModEnd> < p + <S2SV_ModStart> ) ; return ep2 <S2SV_ModEnd> + 1 ; <S2SV_ModStart> 1 ; } ND_TCHECK_16BITS ( & p [ 0 ] ) ; <S2SV_ModStart> , \"value=\" ) ) ; ND_TCHECK_16BITS ( & p [ 2 ] <S2SV_ModStart> ) ; else { if ( ! <S2SV_ModStart> , 2 ) ) { ND_PRINT ( ( ndo , \")\" ) ) ; goto trunc ; } } <S2SV_ModEnd> } else { <S2SV_ModStart> , \"len=%d<S2SV_blank>value=\" , totlen - 4 ) ) ; if ( ! <S2SV_ModEnd> rawprint ( ndo <S2SV_ModStart> 4 ] , totlen - 4 ) ) { <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; goto trunc ; } } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_ModStart> + totlen ; trunc : return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-27097\n\n```\nCWE-000 int fit_check_format ( const void * fit , ulong size ) { int ret ; ret = fdt_check_header ( fit ) ; if ( ret ) { log_debug ( \"Wrong<S2SV_blank>FIT<S2SV_blank>format:<S2SV_blank>not<S2SV_blank>a<S2SV_blank>flattened<S2SV_blank>device<S2SV_blank>tree<S2SV_blank>(err=%d)\\\\n\" , ret ) ; return - ENOEXEC ; } <S2SV_StartBug> if ( ! fdt_getprop ( fit , 0 , FIT_DESC_PROP , NULL ) ) { <S2SV_EndBug> log_debug ( \"Wrong<S2SV_blank>FIT<S2SV_blank>format:<S2SV_blank>no<S2SV_blank>description\\\\n\" ) ; return - ENOMSG ; } if ( IMAGE_ENABLE_TIMESTAMP ) { if ( ! fdt_getprop ( fit , 0 , FIT_TIMESTAMP_PROP , NULL ) ) { log_debug ( \"Wrong<S2SV_blank>FIT<S2SV_blank>format:<S2SV_blank>no<S2SV_blank>timestamp\\\\n\" ) ; return - ENODATA ; } } if ( fdt_path_offset ( fit , FIT_IMAGES_PATH ) < 0 ) { log_debug ( \"Wrong<S2SV_blank>FIT<S2SV_blank>format:<S2SV_blank>no<S2SV_blank>images<S2SV_blank>parent<S2SV_blank>node\\\\n\" ) ; return - ENOENT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( CONFIG_IS_ENABLED ( FIT_FULL_CHECK ) ) { if ( size == IMAGE_SIZE_INVAL ) size = fdt_totalsize ( fit ) ; ret = fdt_check_full ( fit , size ) ; if ( ret ) { log_debug ( \"FIT<S2SV_blank>check<S2SV_blank>error<S2SV_blank>%d\\\\n\" , ret ) ; return - EINVAL ; } } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9608\n\n```\nCWE-476 static int dnxhd_find_frame_end ( DNXHDParserContext * dctx , const uint8_t * buf , int buf_size ) { ParseContext * pc = & dctx -> pc ; uint64_t state = pc -> state64 ; int pic_found = pc -> frame_start_found ; int i = 0 ; if ( ! pic_found ) { for ( i = 0 ; i < buf_size ; i ++ ) { state = ( state << 8 ) | buf [ i ] ; if ( ff_dnxhd_check_header_prefix ( state & 0xffffffffff00LL ) != 0 ) { i ++ ; pic_found = 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; break ; } } } if ( pic_found && ! dctx -> remaining ) { if ( ! buf_size ) return 0 ; for ( ; i < buf_size ; i ++ ) { dctx -> cur_byte ++ ; state = ( state << 8 ) | buf [ i ] ; if ( dctx -> cur_byte == 24 ) { dctx -> h = ( state >> 32 ) & 0xFFFF ; } else if ( dctx -> cur_byte == 26 ) { dctx -> w = ( state >> 32 ) & 0xFFFF ; } else if ( dctx -> cur_byte == 42 ) { int cid = ( state >> 32 ) & 0xFFFFFFFF ; <S2SV_StartBug> if ( cid <= 0 ) <S2SV_EndBug> continue ; <S2SV_StartBug> dctx -> remaining = avpriv_dnxhd_get_frame_size ( cid ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dctx -> remaining <= 0 ) { <S2SV_EndBug> <S2SV_StartBug> dctx -> remaining = dnxhd_get_hr_frame_size ( cid , dctx -> w , dctx -> h ) ; <S2SV_EndBug> <S2SV_StartBug> if ( dctx -> remaining <= 0 ) <S2SV_EndBug> <S2SV_StartBug> return dctx -> remaining ; <S2SV_EndBug> } if ( buf_size - i + 47 >= dctx -> remaining ) { int remaining = dctx -> remaining ; pc -> frame_start_found = 0 ; pc -> state64 = - 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; return remaining ; } else { dctx -> remaining -= buf_size ; } } } } else if ( pic_found ) { if ( dctx -> remaining > buf_size ) { dctx -> remaining -= buf_size ; } else { int remaining = dctx -> remaining ; pc -> frame_start_found = 0 ; pc -> state64 = - 1 ; dctx -> cur_byte = 0 ; dctx -> remaining = 0 ; return remaining ; } } pc -> frame_start_found = pic_found ; pc -> state64 = state ; return END_NOT_FOUND ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & 0xFFFFFFFF ; int remaining ; <S2SV_ModStart> ) continue ; <S2SV_ModEnd> remaining = avpriv_dnxhd_get_frame_size <S2SV_ModStart> ; if ( <S2SV_ModEnd> remaining <= 0 <S2SV_ModStart> 0 ) { <S2SV_ModEnd> remaining = dnxhd_get_hr_frame_size <S2SV_ModStart> ; if ( <S2SV_ModEnd> remaining <= 0 <S2SV_ModStart> <= 0 ) continue ; } dctx -> remaining = remaining ; <S2SV_ModEnd> if ( buf_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 int mount_proc_if_needed ( const char * rootfs ) { char path [ MAXPATHLEN ] ; char link [ 20 ] ; int linklen , ret ; int mypid ; ret = snprintf ( path , MAXPATHLEN , \"%s/proc/self\" , rootfs ) ; if ( ret < 0 || ret >= MAXPATHLEN ) { SYSERROR ( \"proc<S2SV_blank>path<S2SV_blank>name<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } memset ( link , 0 , 20 ) ; linklen = readlink ( path , link , 20 ) ; mypid = ( int ) getpid ( ) ; INFO ( \"I<S2SV_blank>am<S2SV_blank>%d,<S2SV_blank>/proc/self<S2SV_blank>points<S2SV_blank>to<S2SV_blank>\\'%s\\'\" , mypid , link ) ; ret = snprintf ( path , MAXPATHLEN , \"%s/proc\" , rootfs ) ; if ( ret < 0 || ret >= MAXPATHLEN ) { SYSERROR ( \"proc<S2SV_blank>path<S2SV_blank>name<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } if ( linklen < 0 ) goto domount ; if ( atoi ( link ) != mypid ) { umount2 ( path , MNT_DETACH ) ; goto domount ; } return 0 ; domount : <S2SV_StartBug> if ( mount ( \"proc\" , path , \"proc\" , 0 , NULL ) ) <S2SV_EndBug> return - 1 ; INFO ( \"Mounted<S2SV_blank>/proc<S2SV_blank>in<S2SV_blank>container<S2SV_blank>for<S2SV_blank>security<S2SV_blank>transition\" ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( safe_mount <S2SV_ModEnd> ( \"proc\" , <S2SV_ModStart> 0 , NULL , rootfs ) < 0 <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15906\n\n```\nCWE-269 static void process_open ( u_int32_t id ) { u_int32_t pflags ; Attrib a ; char * name ; int r , handle , fd , flags , mode , status = SSH2_FX_FAILURE ; if ( ( r = sshbuf_get_cstring ( iqueue , & name , NULL ) ) != 0 || ( r = sshbuf_get_u32 ( iqueue , & pflags ) ) != 0 || ( r = decode_attrib ( iqueue , & a ) ) != 0 ) fatal ( \"%s:<S2SV_blank>buffer<S2SV_blank>error:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; debug3 ( \"request<S2SV_blank>%u:<S2SV_blank>open<S2SV_blank>flags<S2SV_blank>%d\" , id , pflags ) ; flags = flags_from_portable ( pflags ) ; mode = ( a . flags & SSH2_FILEXFER_ATTR_PERMISSIONS ) ? a . perm : 0666 ; logit ( \"open<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>flags<S2SV_blank>%s<S2SV_blank>mode<S2SV_blank>0%o\" , name , string_from_portable ( pflags ) , mode ) ; if ( readonly && <S2SV_StartBug> ( ( flags & O_ACCMODE ) == O_WRONLY || <S2SV_EndBug> <S2SV_StartBug> ( flags & O_ACCMODE ) == O_RDWR ) ) { <S2SV_EndBug> verbose ( \"Refusing<S2SV_blank>open<S2SV_blank>request<S2SV_blank>in<S2SV_blank>read-only<S2SV_blank>mode\" ) ; status = SSH2_FX_PERMISSION_DENIED ; } else { fd = open ( name , flags , mode ) ; if ( fd < 0 ) { status = errno_to_portable ( errno ) ; } else { handle = handle_new ( HANDLE_FILE , name , fd , flags , NULL ) ; if ( handle < 0 ) { close ( fd ) ; } else { send_handle ( id , handle ) ; status = SSH2_FX_OK ; } } } if ( status != SSH2_FX_OK ) send_status ( id , status ) ; free ( name ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & O_ACCMODE ) != O_RDONLY <S2SV_ModEnd> || ( flags <S2SV_ModStart> ( flags & ( O_CREAT | O_TRUNC ) ) != 0 <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10888\n\n```\nCWE-125 int git_delta_apply ( void * * out , size_t * out_len , const unsigned char * base , size_t base_len , const unsigned char * delta , size_t delta_len ) { const unsigned char * delta_end = delta + delta_len ; size_t base_sz , res_sz , alloc_sz ; unsigned char * res_dp ; * out = NULL ; * out_len = 0 ; if ( ( hdr_sz ( & base_sz , & delta , delta_end ) < 0 ) || ( base_sz != base_len ) ) { giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta:<S2SV_blank>base<S2SV_blank>size<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>given<S2SV_blank>data\" ) ; return - 1 ; } if ( hdr_sz ( & res_sz , & delta , delta_end ) < 0 ) { giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta:<S2SV_blank>base<S2SV_blank>size<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>given<S2SV_blank>data\" ) ; return - 1 ; } GITERR_CHECK_ALLOC_ADD ( & alloc_sz , res_sz , 1 ) ; res_dp = git__malloc ( alloc_sz ) ; GITERR_CHECK_ALLOC ( res_dp ) ; res_dp [ res_sz ] = '\\\\0' ; * out = res_dp ; * out_len = res_sz ; while ( delta < delta_end ) { unsigned char cmd = * delta ++ ; if ( cmd & 0x80 ) { size_t off = 0 , len = 0 ; <S2SV_StartBug> if ( cmd & 0x01 ) off = * delta ++ ; <S2SV_EndBug> <S2SV_StartBug> if ( cmd & 0x02 ) off |= * delta ++ << 8UL ; <S2SV_EndBug> <S2SV_StartBug> if ( cmd & 0x04 ) off |= * delta ++ << 16UL ; <S2SV_EndBug> <S2SV_StartBug> if ( cmd & 0x08 ) off |= ( ( unsigned ) * delta ++ << 24UL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( cmd & 0x10 ) len = * delta ++ ; <S2SV_EndBug> <S2SV_StartBug> if ( cmd & 0x20 ) len |= * delta ++ << 8UL ; <S2SV_EndBug> <S2SV_StartBug> if ( cmd & 0x40 ) len |= * delta ++ << 16UL ; <S2SV_EndBug> <S2SV_StartBug> if ( ! len ) len = 0x10000 ; <S2SV_EndBug> if ( base_len < off + len || res_sz < len ) goto fail ; memcpy ( res_dp , base + off , len ) ; res_dp += len ; res_sz -= len ; } else if ( cmd ) { if ( delta_end - delta < cmd || res_sz < cmd ) goto fail ; memcpy ( res_dp , delta , cmd ) ; delta += cmd ; res_dp += cmd ; res_sz -= cmd ; } else { goto fail ; } } if ( delta != delta_end || res_sz ) goto fail ; return 0 ; fail : git__free ( * out ) ; * out = NULL ; * out_len = 0 ; giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta\" ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; # define ADD_DELTA ( o , shift ) { if ( delta < delta_end ) ( o ) |= ( ( unsigned ) <S2SV_ModEnd> * delta ++ <S2SV_ModStart> delta ++ << shift ) ; else goto fail ; } if ( cmd & 0x01 ) ADD_DELTA ( off , 0UL ) ; if ( cmd & 0x02 ) ADD_DELTA ( off , 8UL ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> & 0x04 ) ADD_DELTA ( off , 16UL ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> & 0x08 ) ADD_DELTA ( off , <S2SV_ModEnd> 24UL ) ; <S2SV_ModStart> & 0x10 ) ADD_DELTA ( len , 0UL ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> & 0x20 ) ADD_DELTA ( len , 8UL ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> & 0x40 ) ADD_DELTA ( len , 16UL ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> = 0x10000 ; # undef ADD_DELTA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13006\n\n```\nCWE-125 static void l2tp_result_code_print ( netdissect_options * ndo , const u_char * dat , u_int length ) { const uint16_t * ptr = ( const uint16_t * ) dat ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"%u\" , EXTRACT_16BITS ( ptr ) ) ) ; ptr ++ ; <S2SV_EndBug> <S2SV_StartBug> if ( length > 2 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"/%u\" , EXTRACT_16BITS ( ptr ) ) ) ; ptr ++ ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> if ( length > 4 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; <S2SV_StartBug> print_string ( ndo , ( const u_char * ) ptr , length - 4 ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) dat ; if ( length < 2 ) { ND_PRINT ( ( ndo , \"AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; } <S2SV_ModStart> ; ptr ++ ; length -= 2 <S2SV_ModStart> if ( length == 0 ) return ; if ( length < <S2SV_ModEnd> 2 ) { <S2SV_ModStart> 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>AVP<S2SV_blank>too<S2SV_blank>short\" ) ) ; return ; } <S2SV_ModStart> ptr ++ ; length -= 2 ; <S2SV_ModEnd> if ( length <S2SV_ModStart> if ( length == 0 ) return ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ptr , length <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14763\n\n```\nCWE-189 static int __dwc3_gadget_kick_transfer ( struct dwc3_ep * dep ) { struct dwc3_gadget_ep_cmd_params params ; struct dwc3_request * req ; int starting ; int ret ; u32 cmd ; if ( ! dwc3_calc_trbs_left ( dep ) ) return 0 ; starting = ! ( dep -> flags & DWC3_EP_BUSY ) ; dwc3_prepare_trbs ( dep ) ; req = next_request ( & dep -> started_list ) ; if ( ! req ) { dep -> flags |= DWC3_EP_PENDING_REQUEST ; return 0 ; } memset ( & params , 0 , sizeof ( params ) ) ; if ( starting ) { params . param0 = upper_32_bits ( req -> trb_dma ) ; params . param1 = lower_32_bits ( req -> trb_dma ) ; cmd = DWC3_DEPCMD_STARTTRANSFER ; if ( usb_endpoint_xfer_isoc ( dep -> endpoint . desc ) ) cmd |= DWC3_DEPCMD_PARAM ( dep -> frame_number ) ; } else { cmd = DWC3_DEPCMD_UPDATETRANSFER | DWC3_DEPCMD_PARAM ( dep -> resource_index ) ; } ret = dwc3_send_gadget_ep_cmd ( dep , cmd , & params ) ; if ( ret < 0 ) { if ( req -> trb ) memset ( req -> trb , 0 , sizeof ( struct dwc3_trb ) ) ; dep -> queued_requests -- ; <S2SV_StartBug> dwc3_gadget_giveback ( dep , req , ret ) ; <S2SV_EndBug> return ret ; } dep -> flags |= DWC3_EP_BUSY ; if ( starting ) { dep -> resource_index = dwc3_gadget_ep_get_transfer_index ( dep ) ; WARN_ON_ONCE ( ! dep -> resource_index ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> queued_requests -- ; dwc3_gadget_del_and_unmap_request <S2SV_ModEnd> ( dep ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18270\n\n```\nCWE-000 int install_user_keyrings ( void ) { struct user_struct * user ; const struct cred * cred ; struct key * uid_keyring , * session_keyring ; key_perm_t user_keyring_perm ; char buf [ 20 ] ; int ret ; uid_t uid ; user_keyring_perm = ( KEY_POS_ALL & ~ KEY_POS_SETATTR ) | KEY_USR_ALL ; cred = current_cred ( ) ; user = cred -> user ; uid = from_kuid ( cred -> user_ns , user -> uid ) ; kenter ( \"%p{%u}\" , user , uid ) ; if ( user -> uid_keyring && user -> session_keyring ) { kleave ( \"<S2SV_blank>=<S2SV_blank>0<S2SV_blank>[exist]\" ) ; return 0 ; } mutex_lock ( & key_user_keyring_mutex ) ; ret = 0 ; if ( ! user -> uid_keyring ) { sprintf ( buf , \"_uid.%u\" , uid ) ; uid_keyring = find_keyring_by_name ( buf , true ) ; if ( IS_ERR ( uid_keyring ) ) { uid_keyring = keyring_alloc ( buf , user -> uid , INVALID_GID , cred , user_keyring_perm , <S2SV_StartBug> KEY_ALLOC_IN_QUOTA , <S2SV_EndBug> NULL , NULL ) ; if ( IS_ERR ( uid_keyring ) ) { ret = PTR_ERR ( uid_keyring ) ; goto error ; } } sprintf ( buf , \"_uid_ses.%u\" , uid ) ; session_keyring = find_keyring_by_name ( buf , true ) ; if ( IS_ERR ( session_keyring ) ) { session_keyring = keyring_alloc ( buf , user -> uid , INVALID_GID , cred , user_keyring_perm , <S2SV_StartBug> KEY_ALLOC_IN_QUOTA , <S2SV_EndBug> NULL , NULL ) ; if ( IS_ERR ( session_keyring ) ) { ret = PTR_ERR ( session_keyring ) ; goto error_release ; } ret = key_link ( session_keyring , uid_keyring ) ; if ( ret < 0 ) goto error_release_both ; } user -> uid_keyring = uid_keyring ; user -> session_keyring = session_keyring ; } mutex_unlock ( & key_user_keyring_mutex ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>0\" ) ; return 0 ; error_release_both : key_put ( session_keyring ) ; error_release : key_put ( uid_keyring ) ; error : mutex_unlock ( & key_user_keyring_mutex ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , user_keyring_perm , KEY_ALLOC_UID_KEYRING | <S2SV_ModStart> , user_keyring_perm , KEY_ALLOC_UID_KEYRING |\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4127\n\n```\nCWE-264 static int multipath_ioctl ( struct dm_target * ti , unsigned int cmd , unsigned long arg ) { struct multipath * m = ( struct multipath * ) ti -> private ; struct block_device * bdev = NULL ; fmode_t mode = 0 ; unsigned long flags ; int r = 0 ; spin_lock_irqsave ( & m -> lock , flags ) ; if ( ! m -> current_pgpath ) __choose_pgpath ( m , 0 ) ; if ( m -> current_pgpath ) { bdev = m -> current_pgpath -> path . dev -> bdev ; mode = m -> current_pgpath -> path . dev -> mode ; } if ( m -> queue_io ) r = - EAGAIN ; else if ( ! bdev ) r = - EIO ; spin_unlock_irqrestore ( & m -> lock , flags ) ; <S2SV_StartBug> return r ? : __blkdev_driver_ioctl ( bdev , mode , cmd , arg ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flags ) ; if ( ! r && ti -> len != i_size_read ( bdev -> bd_inode ) >> SECTOR_SHIFT ) r = scsi_verify_blk_ioctl ( NULL , cmd ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void SetGray ( double grayscale , int par ) { if ( par == STROKING ) { <S2SV_StartBug> outpos += sprintf ( outpos , \"<S2SV_blank>%12.3f<S2SV_blank>G\" , grayscale ) ; <S2SV_EndBug> } else { <S2SV_StartBug> outpos += sprintf ( outpos , \"<S2SV_blank>%12.3f<S2SV_blank>g\" , grayscale ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> STROKING ) { sprintf ( outputbuffer <S2SV_ModEnd> , \"<S2SV_blank>%12.3f<S2SV_blank>G\" , <S2SV_ModStart> } else { sprintf ( outputbuffer <S2SV_ModEnd> , \"<S2SV_blank>%12.3f<S2SV_blank>g\" , <S2SV_ModStart> ) ; } sendClean ( outputbuffer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void SetBackgroundColor ( int par ) { <S2SV_StartBug> if ( par == STROKING ) { outpos += sprintf ( outpos , \"<S2SV_blank>0<S2SV_blank>0<S2SV_blank>0<S2SV_blank>0<S2SV_blank>K\" ) ; } <S2SV_EndBug> <S2SV_StartBug> else { outpos += sprintf ( outpos , \"<S2SV_blank>0<S2SV_blank>0<S2SV_blank>0<S2SV_blank>0<S2SV_blank>k\" ) ; } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> STROKING ) { send ( <S2SV_ModEnd> \"<S2SV_blank>0<S2SV_blank>0<S2SV_blank>0<S2SV_blank>0<S2SV_blank>K\" ) ; <S2SV_ModStart> } else { send ( <S2SV_ModEnd> \"<S2SV_blank>0<S2SV_blank>0<S2SV_blank>0<S2SV_blank>0<S2SV_blank>k\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static int inet_sk_reselect_saddr ( struct sock * sk ) { struct inet_sock * inet = inet_sk ( sk ) ; __be32 old_saddr = inet -> inet_saddr ; __be32 daddr = inet -> inet_daddr ; struct flowi4 fl4 ; struct rtable * rt ; __be32 new_saddr ; <S2SV_StartBug> if ( inet -> opt && inet -> opt -> srr ) <S2SV_EndBug> daddr = inet -> opt -> faddr ; rt = ip_route_connect ( & fl4 , daddr , 0 , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if , sk -> sk_protocol , inet -> inet_sport , inet -> inet_dport , sk , false ) ; if ( IS_ERR ( rt ) ) return PTR_ERR ( rt ) ; sk_setup_caps ( sk , & rt -> dst ) ; new_saddr = rt -> rt_src ; if ( new_saddr == old_saddr ) return 0 ; if ( sysctl_ip_dynaddr > 1 ) { printk ( KERN_INFO \"%s():<S2SV_blank>shifting<S2SV_blank>inet->saddr<S2SV_blank>from<S2SV_blank>%pI4<S2SV_blank>to<S2SV_blank>%pI4\\\\n\" , __func__ , & old_saddr , & new_saddr ) ; } inet -> inet_saddr = inet -> inet_rcv_saddr = new_saddr ; __sk_prot_rehash ( sk ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> __be32 new_saddr ; struct ip_options_rcu * inet_opt ; inet_opt = rcu_dereference_protected ( inet -> inet_opt , sock_owned_by_user ( sk ) ) ; if ( inet_opt && inet_opt -> opt . srr ) daddr = inet_opt -> opt . <S2SV_ModEnd> faddr ; rt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6448\n\n```\nCWE-119 static int dalvik_disassemble ( RAsm * a , RAsmOp * op , const ut8 * buf , int len ) { int vA , vB , vC , payload = 0 , i = ( int ) buf [ 0 ] ; int size = dalvik_opcodes [ i ] . len ; char str [ 1024 ] , * strasm ; ut64 offset ; const char * flag_str ; op -> buf_asm [ 0 ] = 0 ; if ( buf [ 0 ] == 0x00 ) { switch ( buf [ 1 ] ) { case 0x01 : { unsigned short array_size = buf [ 2 ] | ( buf [ 3 ] << 8 ) ; int first_key = buf [ 4 ] | ( buf [ 5 ] << 8 ) | ( buf [ 6 ] << 16 ) | ( buf [ 7 ] << 24 ) ; <S2SV_StartBug> sprintf ( op -> buf_asm , \"packed-switch-payload<S2SV_blank>%d,<S2SV_blank>%d\" , array_size , first_key ) ; <S2SV_EndBug> size = 8 ; payload = 2 * ( array_size * 2 ) ; len = 0 ; } break ; case 0x02 : { unsigned short array_size = buf [ 2 ] | ( buf [ 3 ] << 8 ) ; <S2SV_StartBug> sprintf ( op -> buf_asm , \"sparse-switch-payload<S2SV_blank>%d\" , array_size ) ; <S2SV_EndBug> size = 4 ; payload = 2 * ( array_size * 4 ) ; len = 0 ; } break ; case 0x03 : if ( len > 7 ) { unsigned short elem_width = buf [ 2 ] | ( buf [ 3 ] << 8 ) ; unsigned int array_size = buf [ 4 ] | ( buf [ 5 ] << 8 ) | ( buf [ 6 ] << 16 ) | ( buf [ 7 ] << 24 ) ; snprintf ( op -> buf_asm , sizeof ( op -> buf_asm ) , \"fill-array-data-payload<S2SV_blank>%d,<S2SV_blank>%d\" , elem_width , array_size ) ; payload = 2 * ( ( array_size * elem_width + 1 ) / 2 ) ; } size = 8 ; len = 0 ; break ; default : break ; } } strasm = NULL ; if ( size <= len ) { strncpy ( op -> buf_asm , dalvik_opcodes [ i ] . name , sizeof ( op -> buf_asm ) - 1 ) ; strasm = strdup ( op -> buf_asm ) ; size = dalvik_opcodes [ i ] . len ; switch ( dalvik_opcodes [ i ] . fmt ) { case fmtop : break ; case fmtopvAvB : vA = buf [ 1 ] & 0x0f ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , vA , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAvBBBB : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , vA , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAAAvBBBB : vA = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; vB = ( buf [ 5 ] << 8 ) | buf [ 4 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , vA , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAA : vA = ( int ) buf [ 1 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i\" , vA ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAcB : vA = buf [ 1 ] & 0x0f ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>%#x\" , vA , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAcBBBB : vA = ( int ) buf [ 1 ] ; { short sB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>%#04hx\" , vA , sB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; } break ; case fmtopvAAcBBBBBBBB : vA = ( int ) buf [ 1 ] ; vB = buf [ 2 ] | ( buf [ 3 ] << 8 ) | ( buf [ 4 ] << 16 ) | ( buf [ 5 ] << 24 ) ; if ( buf [ 0 ] == 0x17 ) { snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i:v%i,<S2SV_blank>0x%08x\" , vA , vA + 1 , vB ) ; } else { snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>0x%08x\" , vA , vB ) ; } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAcBBBB0000 : vA = ( int ) buf [ 1 ] ; vB = 0 | ( buf [ 2 ] << 16 ) | ( buf [ 3 ] << 24 ) ; if ( buf [ 0 ] == 0x19 ) { snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i:v%i,<S2SV_blank>0x%08x\" , vA , vA + 1 , vB ) ; } else { snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>0x%08x\" , vA , vB ) ; } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAcBBBBBBBBBBBBBBBB : vA = ( int ) buf [ 1 ] ; # define llint long long int llint lB = ( llint ) buf [ 2 ] | ( ( llint ) buf [ 3 ] << 8 ) | ( ( llint ) buf [ 4 ] << 16 ) | ( ( llint ) buf [ 5 ] << 24 ) | ( ( llint ) buf [ 6 ] << 32 ) | ( ( llint ) buf [ 7 ] << 40 ) | ( ( llint ) buf [ 8 ] << 48 ) | ( ( llint ) buf [ 9 ] << 56 ) ; # undef llint <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i:v%i,<S2SV_blank>0x%\" PFMT64x , vA , vA + 1 , lB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAvBBvCC : vA = ( int ) buf [ 1 ] ; vB = ( int ) buf [ 2 ] ; vC = ( int ) buf [ 3 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i\" , vA , vB , vC ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAvBBcCC : vA = ( int ) buf [ 1 ] ; vB = ( int ) buf [ 2 ] ; vC = ( int ) buf [ 3 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%#x\" , vA , vB , vC ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAvBcCCCC : vA = buf [ 1 ] & 0x0f ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; vC = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%#x\" , vA , vB , vC ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtoppAA : vA = ( char ) buf [ 1 ] ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>0x%08\" PFMT64x , a -> pc + ( vA * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtoppAAAA : vA = ( short ) ( buf [ 3 ] << 8 | buf [ 2 ] ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>0x%08\" PFMT64x , a -> pc + ( vA * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAApBBBB : vA = ( int ) buf [ 1 ] ; vB = ( int ) ( buf [ 3 ] << 8 | buf [ 2 ] ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>0x%08\" PFMT64x , vA , a -> pc + ( vB * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtoppAAAAAAAA : vA = ( int ) ( buf [ 2 ] | ( buf [ 3 ] << 8 ) | ( buf [ 4 ] << 16 ) | ( buf [ 5 ] << 24 ) ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>0x%08\" PFMT64x , a -> pc + ( vA * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAvBpCCCC : vA = buf [ 1 ] & 0x0f ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; vC = ( int ) ( buf [ 3 ] << 8 | buf [ 2 ] ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>0x%08\" PFMT64x , vA , vB , a -> pc + ( vC * 2 ) ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAApBBBBBBBB : vA = ( int ) buf [ 1 ] ; vB = ( int ) ( buf [ 2 ] | ( buf [ 3 ] << 8 ) | ( buf [ 4 ] << 16 ) | ( buf [ 5 ] << 24 ) ) ; snprintf ( str , sizeof ( str ) , \"<S2SV_blank>v%i,<S2SV_blank>0x%08\" PFMT64x , vA , a -> pc + vB ) ; strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptinlineI : vA = ( int ) ( buf [ 1 ] & 0x0f ) ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; * str = 0 ; switch ( vA ) { case 1 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i}\" , buf [ 4 ] & 0x0f ) ; <S2SV_EndBug> break ; case 2 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , ( buf [ 4 ] & 0xf0 ) >> 4 ) ; <S2SV_EndBug> break ; case 3 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f ) ; <S2SV_EndBug> break ; case 4 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f , ( buf [ 5 ] & 0xf0 ) >> 4 ) ; break ; default : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{}\" ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>[%04x]\" , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptinlineIR : case fmtoptinvokeVSR : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; vC = ( buf [ 5 ] << 8 ) | buf [ 4 ] ; <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>[%04x]\" , vC , vC + vA - 1 , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptinvokeVS : vA = ( int ) ( buf [ 1 ] & 0xf0 ) >> 4 ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; switch ( vA ) { case 1 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i}\" , buf [ 4 ] & 0x0f ) ; <S2SV_EndBug> break ; case 2 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , ( buf [ 4 ] & 0xf0 ) >> 4 ) ; <S2SV_EndBug> break ; case 3 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f ) ; break ; case 4 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f , ( buf [ 5 ] & 0xf0 ) >> 4 ) ; break ; default : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{}\" ) ; <S2SV_EndBug> break ; } strasm = r_str_concat ( strasm , str ) ; <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>[%04x]\" , vB ) ; <S2SV_EndBug> strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAtBBBB : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; if ( buf [ 0 ] == 0x1a ) { offset = R_ASM_GET_OFFSET ( a , 's' , vB ) ; if ( offset == - 1 ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>string+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x , vA , offset ) ; <S2SV_EndBug> } } else if ( buf [ 0 ] == 0x1c || buf [ 0 ] == 0x1f || buf [ 0 ] == 0x22 ) { flag_str = R_ASM_GET_NAME ( a , 'c' , vB ) ; if ( ! flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>class+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>%s\" , vA , flag_str ) ; <S2SV_EndBug> } } else { flag_str = R_ASM_GET_NAME ( a , 'f' , vB ) ; if ( ! flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>field+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>%s\" , vA , flag_str ) ; <S2SV_EndBug> } } strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptopvAvBoCCCC : vA = ( buf [ 1 ] & 0x0f ) ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; vC = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; offset = R_ASM_GET_OFFSET ( a , 'o' , vC ) ; if ( offset == - 1 ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>[obj+%04x]\" , vA , vB , vC ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>[0x%\" PFMT64x \"]\" , vA , vB , offset ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopAAtBBBB : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; offset = R_ASM_GET_OFFSET ( a , 't' , vB ) ; if ( offset == - 1 ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>thing+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x , vA , offset ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAvBtCCCC : vA = ( buf [ 1 ] & 0x0f ) ; vB = ( buf [ 1 ] & 0xf0 ) >> 4 ; vC = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; if ( buf [ 0 ] == 0x20 || buf [ 0 ] == 0x23 ) { flag_str = R_ASM_GET_NAME ( a , 'c' , vC ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%s\" , vA , vB , flag_str ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>class+%i\" , vA , vB , vC ) ; <S2SV_EndBug> } } else { flag_str = R_ASM_GET_NAME ( a , 'f' , vC ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%s\" , vA , vB , flag_str ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>field+%i\" , vA , vB , vC ) ; <S2SV_EndBug> } } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvAAtBBBBBBBB : vA = ( int ) buf [ 1 ] ; vB = ( int ) ( buf [ 5 ] | ( buf [ 4 ] << 8 ) | ( buf [ 3 ] << 16 ) | ( buf [ 2 ] << 24 ) ) ; offset = R_ASM_GET_OFFSET ( a , 's' , vB ) ; if ( offset == - 1 ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>string+%i\" , vA , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x , vA , offset ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvCCCCmBBBB : vA = ( int ) buf [ 1 ] ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; vC = ( buf [ 5 ] << 8 ) | buf [ 4 ] ; if ( buf [ 0 ] == 0x25 ) { flag_str = R_ASM_GET_NAME ( a , 'c' , vB ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>%s\" , vC , vC + vA - 1 , flag_str ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>class+%i\" , vC , vC + vA - 1 , vB ) ; <S2SV_EndBug> } } else { flag_str = R_ASM_GET_NAME ( a , 'm' , vB ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>%s\" , vC , vC + vA - 1 , flag_str ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>method+%i\" , vC , vC + vA - 1 , vB ) ; <S2SV_EndBug> } } strasm = r_str_concat ( strasm , str ) ; break ; case fmtopvXtBBBB : vA = ( int ) ( buf [ 1 ] & 0xf0 ) >> 4 ; vB = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; switch ( vA ) { case 1 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i}\" , buf [ 4 ] & 0x0f ) ; <S2SV_EndBug> break ; case 2 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , ( buf [ 4 ] & 0xf0 ) >> 4 ) ; <S2SV_EndBug> break ; case 3 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f ) ; break ; case 4 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f , ( buf [ 5 ] & 0xf0 ) >> 4 ) ; break ; case 5 : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , buf [ 4 ] & 0x0f , <S2SV_EndBug> ( buf [ 4 ] & 0xf0 ) >> 4 , buf [ 5 ] & 0x0f , ( buf [ 5 ] & 0xf0 ) >> 4 , buf [ 1 ] & 0x0f ) ; break ; default : <S2SV_StartBug> sprintf ( str , \"<S2SV_blank>{}\" ) ; <S2SV_EndBug> } strasm = r_str_concat ( strasm , str ) ; if ( buf [ 0 ] == 0x24 ) { flag_str = R_ASM_GET_NAME ( a , 'c' , vB ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>%s<S2SV_blank>;<S2SV_blank>0x%x\" , flag_str , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>class+%i\" , vB ) ; <S2SV_EndBug> } } else { flag_str = R_ASM_GET_NAME ( a , 'm' , vB ) ; if ( flag_str ) { <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>%s<S2SV_blank>;<S2SV_blank>0x%x\" , flag_str , vB ) ; <S2SV_EndBug> } else { <S2SV_StartBug> sprintf ( str , \",<S2SV_blank>method+%i\" , vB ) ; <S2SV_EndBug> } } strasm = r_str_concat ( strasm , str ) ; break ; case fmtoptinvokeI : case fmtoptinvokeIR : case fmt00 : default : strcpy ( op -> buf_asm , \"invalid<S2SV_blank>\" ) ; free ( strasm ) ; strasm = NULL ; size = 2 ; } if ( strasm ) { strncpy ( op -> buf_asm , strasm , sizeof ( op -> buf_asm ) - 1 ) ; op -> buf_asm [ sizeof ( op -> buf_asm ) - 1 ] = 0 ; } else { strcpy ( op -> buf_asm , \"invalid\" ) ; } } else if ( len > 0 ) { strcpy ( op -> buf_asm , \"invalid<S2SV_blank>\" ) ; op -> size = len ; size = len ; } op -> payload = payload ; size += payload ; op -> size = size ; free ( strasm ) ; return size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 24 ) ; snprintf <S2SV_ModEnd> ( op -> <S2SV_ModStart> -> buf_asm , sizeof ( op -> buf_asm ) , <S2SV_ModStart> 8 ) ; snprintf <S2SV_ModEnd> ( op -> <S2SV_ModStart> op -> buf_asm , sizeof ( op -> buf_asm ) <S2SV_ModStart> >> 4 ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , <S2SV_ModStart> 2 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , <S2SV_ModStart> 4 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i\" , <S2SV_ModStart> 1 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i\" , <S2SV_ModStart> >> 4 ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>%#x\" , <S2SV_ModStart> 2 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>%#04hx\" , <S2SV_ModStart> # undef llint snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i:v%i,<S2SV_blank>0x%\" PFMT64x <S2SV_ModStart> 3 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i\" , <S2SV_ModStart> 3 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%#x\" , <S2SV_ModStart> 2 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%#x\" , <S2SV_ModStart> case 1 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i}\" , <S2SV_ModStart> case 2 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 3 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 4 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> ; default : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{}\" ) <S2SV_ModStart> str ) ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>[%04x]\" , <S2SV_ModStart> 4 ] ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>[%04x]\" , <S2SV_ModStart> case 1 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i}\" , <S2SV_ModStart> case 2 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 3 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 4 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> ; default : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{}\" ) <S2SV_ModStart> str ) ; snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>[%04x]\" , <S2SV_ModStart> 1 ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>string+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>class+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>%s\" , <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>field+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>%s\" , <S2SV_ModStart> 1 ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>[obj+%04x]\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>[0x%\" PFMT64x <S2SV_ModStart> 1 ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>thing+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%s\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>class+%i\" , <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>%s\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>field+%i\" , <S2SV_ModStart> 1 ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>string+%i\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>v%i,<S2SV_blank>0x%\" PFMT64x <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>%s\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>class+%i\" , <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>%s\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i..v%i},<S2SV_blank>method+%i\" , <S2SV_ModStart> case 1 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i}\" , <S2SV_ModStart> case 2 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 3 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 4 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> case 5 : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i,<S2SV_blank>v%i}\" , <S2SV_ModStart> ; default : snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \"<S2SV_blank>{}\" ) <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>%s<S2SV_blank>;<S2SV_blank>0x%x\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>class+%i\" , <S2SV_ModStart> flag_str ) { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>%s<S2SV_blank>;<S2SV_blank>0x%x\" , <S2SV_ModStart> } else { snprintf ( str , sizeof ( str ) <S2SV_ModEnd> , \",<S2SV_blank>method+%i\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 int sock_queue_err_skb ( struct sock * sk , struct sk_buff * skb ) { if ( atomic_read ( & sk -> sk_rmem_alloc ) + skb -> truesize >= ( unsigned int ) sk -> sk_rcvbuf ) return - ENOMEM ; skb_orphan ( skb ) ; skb -> sk = sk ; skb -> destructor = sock_rmem_free ; atomic_add ( skb -> truesize , & sk -> sk_rmem_alloc ) ; <S2SV_StartBug> skb_dst_force ( skb ) ; <S2SV_EndBug> skb_queue_tail ( & sk -> sk_error_queue , skb ) ; if ( ! sock_flag ( sk , SOCK_DEAD ) ) sk -> sk_data_ready ( sk ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk_rmem_alloc ) ; skb_set_err_queue ( skb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static INLINE void load_pred_mv ( MACROBLOCK * x , PICK_MODE_CONTEXT * ctx ) { <S2SV_StartBug> vpx_memcpy ( x -> pred_mv , ctx -> pred_mv , sizeof ( x -> pred_mv ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx ) { memcpy <S2SV_ModEnd> ( x ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 int bt_sock_stream_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; int err = 0 ; size_t target , copied = 0 ; long timeo ; if ( flags & MSG_OOB ) <S2SV_StartBug> return - EOPNOTSUPP ; <S2SV_EndBug> msg -> msg_namelen = 0 ; BT_DBG ( \"sk<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%zu\" , sk , size ) ; lock_sock ( sk ) ; target = sock_rcvlowat ( sk , flags & MSG_WAITALL , size ) ; timeo = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; do { struct sk_buff * skb ; int chunk ; skb = skb_dequeue ( & sk -> sk_receive_queue ) ; if ( ! skb ) { if ( copied >= target ) break ; err = sock_error ( sk ) ; if ( err ) break ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; err = - EAGAIN ; if ( ! timeo ) break ; timeo = bt_sock_data_wait ( sk , timeo ) ; if ( signal_pending ( current ) ) { err = sock_intr_errno ( timeo ) ; goto out ; } continue ; } chunk = min_t ( unsigned int , skb -> len , size ) ; if ( skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , chunk ) ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; if ( ! copied ) copied = - EFAULT ; break ; } copied += chunk ; size -= chunk ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { int skb_len = skb_headlen ( skb ) ; if ( chunk <= skb_len ) { __skb_pull ( skb , chunk ) ; } else { struct sk_buff * frag ; __skb_pull ( skb , skb_len ) ; chunk -= skb_len ; skb_walk_frags ( skb , frag ) { if ( chunk <= frag -> len ) { skb -> len -= chunk ; skb -> data_len -= chunk ; __skb_pull ( frag , chunk ) ; break ; } else if ( frag -> len ) { chunk -= frag -> len ; skb -> len -= frag -> len ; skb -> data_len -= frag -> len ; __skb_pull ( frag , frag -> len ) ; } } } if ( skb -> len ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; break ; } kfree_skb ( skb ) ; } else { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; break ; } } while ( size ) ; out : release_sock ( sk ) ; return copied ? : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - EOPNOTSUPP <S2SV_ModEnd> ; BT_DBG (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int jffs2_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int rc , xprefix ; switch ( type ) { case ACL_TYPE_ACCESS : xprefix = JFFS2_XPREFIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> umode_t mode = inode -> i_mode ; <S2SV_EndBug> <S2SV_StartBug> rc = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> if ( rc < 0 ) return rc ; if ( inode -> i_mode != mode ) { struct iattr attr ; attr . ia_valid = ATTR_MODE | ATTR_CTIME ; attr . ia_mode = mode ; attr . ia_ctime = CURRENT_TIME_SEC ; rc = jffs2_do_setattr ( inode , & attr ) ; if ( rc < 0 ) return rc ; } <S2SV_StartBug> if ( rc == 0 ) <S2SV_EndBug> acl = NULL ; } break ; case ACL_TYPE_DEFAULT : xprefix = JFFS2_XPREFIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } rc = __jffs2_set_acl ( inode , xprefix , acl ) ; if ( ! rc ) set_cached_acl ( inode , type , acl ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { umode_t mode ; rc = posix_acl_update_mode ( inode <S2SV_ModEnd> , & mode <S2SV_ModStart> , & mode , & acl ) ; if ( rc <S2SV_ModEnd> ) return rc <S2SV_ModStart> rc ; } <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 void kvm_lapic_sync_from_vapic ( struct kvm_vcpu * vcpu ) { <S2SV_StartBug> u32 data ; <S2SV_EndBug> void * vapic ; if ( test_bit ( KVM_APIC_PV_EOI_PENDING , & vcpu -> arch . apic_attention ) ) apic_sync_pv_eoi_from_guest ( vcpu , vcpu -> arch . apic ) ; if ( ! test_bit ( KVM_APIC_CHECK_VAPIC , & vcpu -> arch . apic_attention ) ) return ; <S2SV_StartBug> vapic = kmap_atomic ( vcpu -> arch . apic -> vapic_page ) ; <S2SV_EndBug> data = * ( u32 * ) ( vapic + offset_in_page ( vcpu -> arch . apic -> vapic_addr ) ) ; kunmap_atomic ( vapic ) ; apic_set_tpr ( vcpu -> arch . apic , data & 0xff ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { u32 data <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) return ; kvm_read_guest_cached ( vcpu -> kvm , & <S2SV_ModEnd> vcpu -> arch <S2SV_ModStart> . apic -> vapic_cache , & data , sizeof ( u32 ) <S2SV_ModEnd> ) ; apic_set_tpr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9004\n\n```\nCWE-264 int perf_pmu_register ( struct pmu * pmu , const char * name , int type ) { int cpu , ret ; mutex_lock ( & pmus_lock ) ; ret = - ENOMEM ; pmu -> pmu_disable_count = alloc_percpu ( int ) ; if ( ! pmu -> pmu_disable_count ) goto unlock ; pmu -> type = - 1 ; if ( ! name ) goto skip_type ; pmu -> name = name ; if ( type < 0 ) { type = idr_alloc ( & pmu_idr , pmu , PERF_TYPE_MAX , 0 , GFP_KERNEL ) ; if ( type < 0 ) { ret = type ; goto free_pdc ; } } pmu -> type = type ; if ( pmu_bus_running ) { ret = pmu_dev_alloc ( pmu ) ; if ( ret ) goto free_idr ; } skip_type : pmu -> pmu_cpu_context = find_pmu_context ( pmu -> task_ctx_nr ) ; if ( pmu -> pmu_cpu_context ) goto got_cpu_context ; ret = - ENOMEM ; pmu -> pmu_cpu_context = alloc_percpu ( struct perf_cpu_context ) ; if ( ! pmu -> pmu_cpu_context ) goto free_dev ; for_each_possible_cpu ( cpu ) { struct perf_cpu_context * cpuctx ; cpuctx = per_cpu_ptr ( pmu -> pmu_cpu_context , cpu ) ; __perf_event_init_context ( & cpuctx -> ctx ) ; lockdep_set_class ( & cpuctx -> ctx . mutex , & cpuctx_mutex ) ; lockdep_set_class ( & cpuctx -> ctx . lock , & cpuctx_lock ) ; <S2SV_StartBug> cpuctx -> ctx . type = cpu_context ; <S2SV_EndBug> cpuctx -> ctx . pmu = pmu ; __perf_cpu_hrtimer_init ( cpuctx , cpu ) ; INIT_LIST_HEAD ( & cpuctx -> rotation_list ) ; cpuctx -> unique_pmu = pmu ; } got_cpu_context : if ( ! pmu -> start_txn ) { if ( pmu -> pmu_enable ) { pmu -> start_txn = perf_pmu_start_txn ; pmu -> commit_txn = perf_pmu_commit_txn ; pmu -> cancel_txn = perf_pmu_cancel_txn ; } else { pmu -> start_txn = perf_pmu_nop_void ; pmu -> commit_txn = perf_pmu_nop_int ; pmu -> cancel_txn = perf_pmu_nop_void ; } } if ( ! pmu -> pmu_enable ) { pmu -> pmu_enable = perf_pmu_nop_void ; pmu -> pmu_disable = perf_pmu_nop_void ; } if ( ! pmu -> event_idx ) pmu -> event_idx = perf_event_idx_default ; list_add_rcu ( & pmu -> entry , & pmus ) ; ret = 0 ; unlock : mutex_unlock ( & pmus_lock ) ; return ret ; free_dev : device_del ( pmu -> dev ) ; put_device ( pmu -> dev ) ; free_idr : if ( pmu -> type >= PERF_TYPE_MAX ) idr_remove ( & pmu_idr , pmu -> type ) ; free_pdc : free_percpu ( pmu -> pmu_disable_count ) ; goto unlock ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ctx . <S2SV_ModEnd> pmu = pmu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfs3svc_decode_readlinkargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd3_readlinkargs * args ) { p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; <S2SV_StartBug> args -> buffer = page_address ( * ( rqstp -> rq_next_page ++ ) ) ; <S2SV_EndBug> <S2SV_StartBug> return xdr_argsize_check ( rqstp , p ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; if ( ! xdr_argsize_check ( rqstp , p ) ) return 0 ; <S2SV_ModStart> ) ; return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7492\n\n```\nCWE-476 static int __rds_rdma_map ( struct rds_sock * rs , struct rds_get_mr_args * args , u64 * cookie_ret , struct rds_mr * * mr_ret ) { struct rds_mr * mr = NULL , * found ; unsigned int nr_pages ; struct page * * pages = NULL ; struct scatterlist * sg ; void * trans_private ; unsigned long flags ; rds_rdma_cookie_t cookie ; unsigned int nents ; long i ; int ret ; <S2SV_StartBug> if ( rs -> rs_bound_addr == 0 ) { <S2SV_EndBug> ret = - ENOTCONN ; goto out ; } if ( ! rs -> rs_transport -> get_mr ) { ret = - EOPNOTSUPP ; goto out ; } nr_pages = rds_pages_in_vec ( & args -> vec ) ; if ( nr_pages == 0 ) { ret = - EINVAL ; goto out ; } if ( ( nr_pages - 1 ) > ( RDS_MAX_MSG_SIZE >> PAGE_SHIFT ) ) { ret = - EMSGSIZE ; goto out ; } rdsdebug ( \"RDS:<S2SV_blank>get_mr<S2SV_blank>addr<S2SV_blank>%llx<S2SV_blank>len<S2SV_blank>%llu<S2SV_blank>nr_pages<S2SV_blank>%u\\\\n\" , args -> vec . addr , args -> vec . bytes , nr_pages ) ; pages = kcalloc ( nr_pages , sizeof ( struct page * ) , GFP_KERNEL ) ; if ( ! pages ) { ret = - ENOMEM ; goto out ; } mr = kzalloc ( sizeof ( struct rds_mr ) , GFP_KERNEL ) ; if ( ! mr ) { ret = - ENOMEM ; goto out ; } refcount_set ( & mr -> r_refcount , 1 ) ; RB_CLEAR_NODE ( & mr -> r_rb_node ) ; mr -> r_trans = rs -> rs_transport ; mr -> r_sock = rs ; if ( args -> flags & RDS_RDMA_USE_ONCE ) mr -> r_use_once = 1 ; if ( args -> flags & RDS_RDMA_INVALIDATE ) mr -> r_invalidate = 1 ; if ( args -> flags & RDS_RDMA_READWRITE ) mr -> r_write = 1 ; ret = rds_pin_pages ( args -> vec . addr , nr_pages , pages , 1 ) ; if ( ret < 0 ) goto out ; nents = ret ; sg = kcalloc ( nents , sizeof ( * sg ) , GFP_KERNEL ) ; if ( ! sg ) { ret = - ENOMEM ; goto out ; } WARN_ON ( ! nents ) ; sg_init_table ( sg , nents ) ; for ( i = 0 ; i < nents ; i ++ ) sg_set_page ( & sg [ i ] , pages [ i ] , PAGE_SIZE , 0 ) ; rdsdebug ( \"RDS:<S2SV_blank>trans_private<S2SV_blank>nents<S2SV_blank>is<S2SV_blank>%u\\\\n\" , nents ) ; trans_private = rs -> rs_transport -> get_mr ( sg , nents , rs , & mr -> r_key ) ; if ( IS_ERR ( trans_private ) ) { for ( i = 0 ; i < nents ; i ++ ) put_page ( sg_page ( & sg [ i ] ) ) ; kfree ( sg ) ; ret = PTR_ERR ( trans_private ) ; goto out ; } mr -> r_trans_private = trans_private ; rdsdebug ( \"RDS:<S2SV_blank>get_mr<S2SV_blank>put_user<S2SV_blank>key<S2SV_blank>is<S2SV_blank>%x<S2SV_blank>cookie_addr<S2SV_blank>%p\\\\n\" , mr -> r_key , ( void * ) ( unsigned long ) args -> cookie_addr ) ; cookie = rds_rdma_make_cookie ( mr -> r_key , args -> vec . addr & ~ PAGE_MASK ) ; if ( cookie_ret ) * cookie_ret = cookie ; if ( args -> cookie_addr && put_user ( cookie , ( u64 __user * ) ( unsigned long ) args -> cookie_addr ) ) { ret = - EFAULT ; goto out ; } spin_lock_irqsave ( & rs -> rs_rdma_lock , flags ) ; found = rds_mr_tree_walk ( & rs -> rs_rdma_keys , mr -> r_key , mr ) ; spin_unlock_irqrestore ( & rs -> rs_rdma_lock , flags ) ; BUG_ON ( found && found != mr ) ; rdsdebug ( \"RDS:<S2SV_blank>get_mr<S2SV_blank>key<S2SV_blank>is<S2SV_blank>%x\\\\n\" , mr -> r_key ) ; if ( mr_ret ) { refcount_inc ( & mr -> r_refcount ) ; * mr_ret = mr ; } ret = 0 ; out : kfree ( pages ) ; if ( mr ) rds_mr_put ( mr ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rs_bound_addr == 0 || ! rs -> rs_transport\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11810\n\n```\nCWE-476 int megasas_alloc_cmds ( struct megasas_instance * instance ) { int i ; int j ; u16 max_cmd ; struct megasas_cmd * cmd ; max_cmd = instance -> max_mfi_cmds ; instance -> cmd_list = kcalloc ( max_cmd , sizeof ( struct megasas_cmd * ) , GFP_KERNEL ) ; if ( ! instance -> cmd_list ) { dev_printk ( KERN_DEBUG , & instance -> pdev -> dev , \"out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; return - ENOMEM ; } memset ( instance -> cmd_list , 0 , sizeof ( struct megasas_cmd * ) * max_cmd ) ; for ( i = 0 ; i < max_cmd ; i ++ ) { instance -> cmd_list [ i ] = kmalloc ( sizeof ( struct megasas_cmd ) , GFP_KERNEL ) ; if ( ! instance -> cmd_list [ i ] ) { for ( j = 0 ; j < i ; j ++ ) kfree ( instance -> cmd_list [ j ] ) ; kfree ( instance -> cmd_list ) ; instance -> cmd_list = NULL ; return - ENOMEM ; } } for ( i = 0 ; i < max_cmd ; i ++ ) { cmd = instance -> cmd_list [ i ] ; memset ( cmd , 0 , sizeof ( struct megasas_cmd ) ) ; cmd -> index = i ; cmd -> scmd = NULL ; cmd -> instance = instance ; list_add_tail ( & cmd -> list , & instance -> cmd_pool ) ; } if ( megasas_create_frame_pool ( instance ) ) { dev_printk ( KERN_DEBUG , & instance -> pdev -> dev , \"Error<S2SV_blank>creating<S2SV_blank>frame<S2SV_blank>DMA<S2SV_blank>pool\\\\n\" ) ; megasas_free_cmds ( instance ) ; <S2SV_StartBug> } <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> instance ) ; return - ENOMEM ; } return <S2SV_ModEnd> 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6500\n\n```\nCWE-125 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register IndexPacket * indexes ; register PixelPacket * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , height , pixels_length , quantum ; ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth != 1 ) && ( sun_info . depth != 8 ) && ( sun_info . depth != 24 ) && ( sun_info . depth != 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } switch ( sun_info . maptype ) { case RMT_NONE : break ; case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : break ; } image -> matte = sun_info . depth == 32 ? MagickTrue : MagickFalse ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( sun_info . length == 0 ) ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; number_pixels = ( MagickSizeType ) ( image -> columns * image -> rows ) ; if ( ( sun_info . type != RT_ENCODED ) && ( ( number_pixels * sun_info . depth ) > ( 8UL * sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( HeapOverflowSanityCheck ( sun_info . width , sun_info . depth ) != MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; sun_data = ( unsigned char * ) AcquireQuantumMemory ( sun_info . length , sizeof ( * sun_data ) ) ; if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) { sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } height = sun_info . height ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) { sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; } quantum = sun_info . depth == 1 ? 15 : 7 ; bytes_per_line += quantum ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + quantum ) ) { sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; } bytes_per_line >>= 4 ; if ( HeapOverflowSanityCheck ( height , bytes_per_line ) != MagickFalse ) { sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; } pixels_length = height * bytes_per_line ; <S2SV_StartBug> sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( pixels_length , <S2SV_EndBug> sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) { sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } ResetMagickMemory ( sun_pixels , 0 , pixels_length * sizeof ( * sun_pixels ) ) ; if ( sun_info . type == RT_ENCODED ) { status = DecodeImage ( sun_data , sun_info . length , sun_pixels , pixels_length ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } else { if ( sun_info . length > pixels_length ) { sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickMemory ( sun_pixels , sun_data , sun_info . length ) ; } sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) SetPixelIndex ( indexes + x + 7 - bit , ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) ) ; p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) SetPixelIndex ( indexes + x + 7 - bit , ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) ; p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( indexes + x , ConstrainColormapIndex ( image , * p ) ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> matte != MagickFalse ) bytes_per_pixel ++ ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> matte != MagickFalse ) SetPixelAlpha ( q , ScaleCharToQuantum ( * p ++ ) ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelRed ( q , ScaleCharToQuantum ( * p ++ ) ) ; } else { SetPixelRed ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( * p ++ ) ) ; } if ( image -> colors != 0 ) { SetPixelRed ( q , image -> colormap [ ( ssize_t ) GetPixelRed ( q ) ] . red ) ; SetPixelGreen ( q , image -> colormap [ ( ssize_t ) GetPixelGreen ( q ) ] . green ) ; SetPixelBlue ( q , image -> colormap [ ( ssize_t ) GetPixelBlue ( q ) ] . blue ) ; } q ++ ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> AcquireQuantumMemory ( pixels_length + image -> rows\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void dm9000EventHandler ( NetInterface * interface ) { error_t error ; uint8_t status ; <S2SV_StartBug> status = dm9000ReadReg ( DM9000_REG_ISR ) ; <S2SV_EndBug> if ( ( status & ISR_LNKCHG ) != 0 ) { <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_ISR , ISR_LNKCHG ) ; <S2SV_EndBug> <S2SV_StartBug> status = dm9000ReadReg ( DM9000_REG_NSR ) ; <S2SV_EndBug> if ( ( status & NSR_LINKST ) != 0 ) { if ( ( status & NSR_SPEED ) != 0 ) { interface -> linkSpeed = NIC_LINK_SPEED_10MBPS ; } else { interface -> linkSpeed = NIC_LINK_SPEED_100MBPS ; } <S2SV_StartBug> status = dm9000ReadReg ( DM9000_REG_NCR ) ; <S2SV_EndBug> if ( ( status & NCR_FDX ) != 0 ) { interface -> duplexMode = NIC_FULL_DUPLEX_MODE ; } else { interface -> duplexMode = NIC_HALF_DUPLEX_MODE ; } interface -> linkState = TRUE ; } else { interface -> linkState = FALSE ; } nicNotifyLinkChange ( interface ) ; } <S2SV_StartBug> if ( ( status & ISR_PR ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_ISR , ISR_PR ) ; <S2SV_EndBug> do { error = dm9000ReceivePacket ( interface ) ; } while ( error != ERROR_BUFFER_EMPTY ) ; } <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_IMR , IMR_PAR | IMR_LNKCHGI | IMR_PTI | IMR_PRI ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = dm9000ReadReg ( DM9000_ISR ) ; if ( ( status & DM9000_ISR_LNKCHG <S2SV_ModEnd> ) != 0 <S2SV_ModStart> { dm9000WriteReg ( DM9000_ISR , DM9000_ISR_LNKCHG <S2SV_ModEnd> ) ; status <S2SV_ModStart> = dm9000ReadReg ( DM9000_NSR ) ; if ( ( status & DM9000_NSR_LINKST ) != 0 ) { if ( ( status & DM9000_NSR_SPEED <S2SV_ModEnd> ) != 0 <S2SV_ModStart> = dm9000ReadReg ( DM9000_NCR ) ; if ( ( status & DM9000_NCR_FDX <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( status & DM9000_ISR_PR <S2SV_ModEnd> ) != 0 <S2SV_ModStart> { dm9000WriteReg ( DM9000_ISR , DM9000_ISR_PR <S2SV_ModEnd> ) ; do <S2SV_ModStart> } dm9000WriteReg ( DM9000_IMR , DM9000_IMR_PAR | DM9000_IMR_LNKCHGI | DM9000_IMR_PTI | DM9000_IMR_PRI <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6712\n\n```\nCWE-119 static int iwl_process_add_sta_resp ( struct iwl_priv * priv , struct iwl_addsta_cmd * addsta , struct iwl_rx_packet * pkt ) { u8 sta_id = addsta -> sta . sta_id ; unsigned long flags ; int ret = - EIO ; if ( pkt -> hdr . flags & IWL_CMD_FAILED_MSK ) { IWL_ERR ( priv , \"Bad<S2SV_blank>return<S2SV_blank>from<S2SV_blank>REPLY_ADD_STA<S2SV_blank>(0x%08X)\\\\n\" , pkt -> hdr . flags ) ; return ret ; } IWL_DEBUG_INFO ( priv , \"Processing<S2SV_blank>response<S2SV_blank>for<S2SV_blank>adding<S2SV_blank>station<S2SV_blank>%u\\\\n\" , sta_id ) ; spin_lock_irqsave ( & priv -> shrd -> sta_lock , flags ) ; switch ( pkt -> u . add_sta . status ) { case ADD_STA_SUCCESS_MSK : IWL_DEBUG_INFO ( priv , \"REPLY_ADD_STA<S2SV_blank>PASSED\\\\n\" ) ; <S2SV_StartBug> iwl_sta_ucode_activate ( priv , sta_id ) ; <S2SV_EndBug> ret = 0 ; break ; case ADD_STA_NO_ROOM_IN_TABLE : IWL_ERR ( priv , \"Adding<S2SV_blank>station<S2SV_blank>%d<S2SV_blank>failed,<S2SV_blank>no<S2SV_blank>room<S2SV_blank>in<S2SV_blank>table.\\\\n\" , sta_id ) ; break ; case ADD_STA_NO_BLOCK_ACK_RESOURCE : IWL_ERR ( priv , \"Adding<S2SV_blank>station<S2SV_blank>%d<S2SV_blank>failed,<S2SV_blank>no<S2SV_blank>block<S2SV_blank>ack<S2SV_blank>\" \"resource.\\\\n\" , sta_id ) ; break ; case ADD_STA_MODIFY_NON_EXIST_STA : IWL_ERR ( priv , \"Attempting<S2SV_blank>to<S2SV_blank>modify<S2SV_blank>non-existing<S2SV_blank>station<S2SV_blank>%d\\\\n\" , sta_id ) ; break ; default : IWL_DEBUG_ASSOC ( priv , \"Received<S2SV_blank>REPLY_ADD_STA:(0x%08X)\\\\n\" , pkt -> u . add_sta . status ) ; break ; } IWL_DEBUG_INFO ( priv , \"%s<S2SV_blank>station<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>addr<S2SV_blank>%pM\\\\n\" , priv -> stations [ sta_id ] . sta . mode == STA_CONTROL_MODIFY_MSK ? \"Modified\" : \"Added\" , sta_id , priv -> stations [ sta_id ] . sta . sta . addr ) ; IWL_DEBUG_INFO ( priv , \"%s<S2SV_blank>station<S2SV_blank>according<S2SV_blank>to<S2SV_blank>cmd<S2SV_blank>buffer<S2SV_blank>%pM\\\\n\" , priv -> stations [ sta_id ] . sta . mode == STA_CONTROL_MODIFY_MSK ? \"Modified\" : \"Added\" , addsta -> sta . addr ) ; spin_unlock_irqrestore ( & priv -> shrd -> sta_lock , flags ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"REPLY_ADD_STA<S2SV_blank>PASSED\\\\n\" ) ; ret = iwl_sta_ucode_activate ( priv , sta_id ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6412\n\n```\nCWE-200 int sbusfb_ioctl_helper ( unsigned long cmd , unsigned long arg , struct fb_info * info , int type , int fb_depth , unsigned long fb_size ) { switch ( cmd ) { case FBIOGTYPE : { struct fbtype __user * f = ( struct fbtype __user * ) arg ; if ( put_user ( type , & f -> fb_type ) || __put_user ( info -> var . yres , & f -> fb_height ) || __put_user ( info -> var . xres , & f -> fb_width ) || __put_user ( fb_depth , & f -> fb_depth ) || __put_user ( 0 , & f -> fb_cmsize ) || __put_user ( fb_size , & f -> fb_cmsize ) ) return - EFAULT ; return 0 ; } case FBIOPUTCMAP_SPARC : { struct fbcmap __user * c = ( struct fbcmap __user * ) arg ; struct fb_cmap cmap ; u16 red , green , blue ; u8 red8 , green8 , blue8 ; unsigned char __user * ured ; unsigned char __user * ugreen ; unsigned char __user * ublue ; <S2SV_StartBug> int index , count , i ; <S2SV_EndBug> if ( get_user ( index , & c -> index ) || __get_user ( count , & c -> count ) || __get_user ( ured , & c -> red ) || __get_user ( ugreen , & c -> green ) || __get_user ( ublue , & c -> blue ) ) return - EFAULT ; cmap . len = 1 ; cmap . red = & red ; cmap . green = & green ; cmap . blue = & blue ; cmap . transp = NULL ; for ( i = 0 ; i < count ; i ++ ) { int err ; if ( get_user ( red8 , & ured [ i ] ) || get_user ( green8 , & ugreen [ i ] ) || get_user ( blue8 , & ublue [ i ] ) ) return - EFAULT ; red = red8 << 8 ; green = green8 << 8 ; blue = blue8 << 8 ; cmap . start = index + i ; err = fb_set_cmap ( & cmap , info ) ; if ( err ) return err ; } return 0 ; } case FBIOGETCMAP_SPARC : { struct fbcmap __user * c = ( struct fbcmap __user * ) arg ; unsigned char __user * ured ; unsigned char __user * ugreen ; unsigned char __user * ublue ; struct fb_cmap * cmap = & info -> cmap ; <S2SV_StartBug> int index , count , i ; <S2SV_EndBug> u8 red , green , blue ; if ( get_user ( index , & c -> index ) || __get_user ( count , & c -> count ) || __get_user ( ured , & c -> red ) || __get_user ( ugreen , & c -> green ) || __get_user ( ublue , & c -> blue ) ) return - EFAULT ; if ( index + count > cmap -> len ) return - EINVAL ; for ( i = 0 ; i < count ; i ++ ) { red = cmap -> red [ index + i ] >> 8 ; green = cmap -> green [ index + i ] >> 8 ; blue = cmap -> blue [ index + i ] >> 8 ; if ( put_user ( red , & ured [ i ] ) || put_user ( green , & ugreen [ i ] ) || put_user ( blue , & ublue [ i ] ) ) return - EFAULT ; } return 0 ; } default : return - EINVAL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ublue ; unsigned <S2SV_ModStart> -> cmap ; unsigned\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-200 static void ipv6_select_ident ( struct frag_hdr * fhdr , struct rt6_info * rt ) { static u32 ip6_idents_hashrnd __read_mostly ; <S2SV_StartBug> u32 hash , id ; <S2SV_EndBug> <S2SV_StartBug> net_get_random_once ( & ip6_idents_hashrnd , sizeof ( ip6_idents_hashrnd ) ) ; <S2SV_EndBug> hash = __ipv6_addr_jhash ( & rt -> rt6i_dst . addr , ip6_idents_hashrnd ) ; hash = __ipv6_addr_jhash ( & rt -> rt6i_src . addr , hash ) ; <S2SV_StartBug> id = ip_idents_reserve ( hash , 1 ) ; <S2SV_EndBug> fhdr -> identification = htonl ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip6_idents_hashrnd __read_mostly ; static u32 ip6_idents_hashrnd_extra __read_mostly ; <S2SV_ModStart> sizeof ( ip6_idents_hashrnd ) ) ; net_get_random_once ( & ip6_idents_hashrnd_extra , sizeof ( ip6_idents_hashrnd_extra <S2SV_ModStart> hash ) ; hash = jhash_1word ( hash , ip6_idents_hashrnd_extra ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9217\n\n```\nCWE-20 int dns_packet_is_reply_for ( DnsPacket * p , const DnsResourceKey * key ) { int r ; assert ( p ) ; assert ( key ) ; if ( DNS_PACKET_QR ( p ) != 1 ) return 0 ; r = dns_packet_extract ( p ) ; if ( r < 0 ) return r ; <S2SV_StartBug> if ( p -> question -> n_keys != 1 ) <S2SV_EndBug> return 0 ; return dns_resource_key_equal ( p -> question -> keys [ 0 ] , key ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! p -> question ) return 0 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-754(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18690\n\n```\nCWE-754 STATIC int xfs_attr_shortform_addname ( xfs_da_args_t * args ) { int newsize , forkoff , retval ; trace_xfs_attr_sf_addname ( args ) ; retval = xfs_attr_shortform_lookup ( args ) ; if ( ( args -> flags & ATTR_REPLACE ) && ( retval == - ENOATTR ) ) { return retval ; } else if ( retval == - EEXIST ) { if ( args -> flags & ATTR_CREATE ) return retval ; retval = xfs_attr_shortform_remove ( args ) ; <S2SV_StartBug> ASSERT ( retval == 0 ) ; <S2SV_EndBug> } if ( args -> namelen >= XFS_ATTR_SF_ENTSIZE_MAX || args -> valuelen >= XFS_ATTR_SF_ENTSIZE_MAX ) return - ENOSPC ; newsize = XFS_ATTR_SF_TOTSIZE ( args -> dp ) ; newsize += XFS_ATTR_SF_ENTSIZE_BYNAME ( args -> namelen , args -> valuelen ) ; forkoff = xfs_attr_shortform_bytesfit ( args -> dp , newsize ) ; if ( ! forkoff ) return - ENOSPC ; xfs_attr_shortform_add ( args , forkoff ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> args ) ; if ( retval ) return retval ; args -> flags &= ~ ATTR_REPLACE <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_b_rt ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_EndBug> TOKENEXTRA * * tp , int mi_row , int mi_col , <S2SV_StartBug> int output_enabled , BLOCK_SIZE bsize ) { <S2SV_EndBug> <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> <S2SV_StartBug> if ( bsize < BLOCK_8X8 ) { <S2SV_EndBug> if ( x -> ab_index > 0 ) return ; } <S2SV_StartBug> set_offsets ( cpi , tile , mi_row , mi_col , bsize ) ; <S2SV_EndBug> <S2SV_StartBug> update_state_rt ( cpi , get_block_context ( x , bsize ) , mi_row , mi_col , bsize ) ; <S2SV_EndBug> <S2SV_StartBug> encode_superblock ( cpi , tp , output_enabled , mi_row , mi_col , bsize ) ; <S2SV_EndBug> <S2SV_StartBug> update_stats ( cpi ) ; <S2SV_EndBug> ( * tp ) -> token = EOSB_TOKEN ; ( * tp ) ++ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , <S2SV_ModStart> , BLOCK_SIZE bsize , PICK_MODE_CONTEXT * ctx <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> -> mb ; <S2SV_ModEnd> set_offsets ( cpi <S2SV_ModStart> cpi , tile , x <S2SV_ModStart> ( cpi , td , ctx <S2SV_ModEnd> , mi_row , <S2SV_ModStart> bsize ) ; # if CONFIG_VP9_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity > 0 && output_enabled && cpi -> common . frame_type != KEY_FRAME ) { vp9_denoiser_denoise ( & cpi -> denoiser , x , mi_row , mi_col , MAX ( BLOCK_8X8 , bsize ) , ctx ) ; } # endif <S2SV_ModStart> encode_superblock ( cpi , td <S2SV_ModStart> mi_col , bsize , ctx <S2SV_ModStart> ; update_stats ( & cpi -> common , td <S2SV_ModEnd> ) ; (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static int mark_source_chains ( const struct xt_table_info * newinfo , unsigned int valid_hooks , void * entry0 ) { unsigned int hook ; for ( hook = 0 ; hook < NF_INET_NUMHOOKS ; hook ++ ) { unsigned int pos = newinfo -> hook_entry [ hook ] ; struct ip6t_entry * e = ( struct ip6t_entry * ) ( entry0 + pos ) ; if ( ! ( valid_hooks & ( 1 << hook ) ) ) continue ; e -> counters . pcnt = pos ; for ( ; ; ) { const struct xt_standard_target * t = ( void * ) ip6t_get_target_c ( e ) ; int visited = e -> comefrom & ( 1 << hook ) ; if ( e -> comefrom & ( 1 << NF_INET_NUMHOOKS ) ) { pr_err ( \"iptables:<S2SV_blank>loop<S2SV_blank>hook<S2SV_blank>%u<S2SV_blank>pos<S2SV_blank>%u<S2SV_blank>%08X.\\\\n\" , hook , pos , e -> comefrom ) ; return 0 ; } e -> comefrom |= ( ( 1 << hook ) | ( 1 << NF_INET_NUMHOOKS ) ) ; <S2SV_StartBug> if ( ( e -> target_offset == sizeof ( struct ip6t_entry ) && <S2SV_EndBug> ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 ) && <S2SV_StartBug> t -> verdict < 0 && <S2SV_EndBug> unconditional ( & e -> ipv6 ) ) || visited ) { unsigned int oldpos , size ; if ( ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 ) && t -> verdict < - NF_MAX_VERDICT - 1 ) { duprintf ( \"mark_source_chains:<S2SV_blank>bad<S2SV_blank>\" \"negative<S2SV_blank>verdict<S2SV_blank>(%i)\\\\n\" , t -> verdict ) ; return 0 ; } do { e -> comefrom ^= ( 1 << NF_INET_NUMHOOKS ) ; # ifdef DEBUG_IP_FIREWALL_USER if ( e -> comefrom & ( 1 << NF_INET_NUMHOOKS ) ) { duprintf ( \"Back<S2SV_blank>unset<S2SV_blank>\" \"on<S2SV_blank>hook<S2SV_blank>%u<S2SV_blank>\" \"rule<S2SV_blank>%u\\\\n\" , hook , pos ) ; } # endif oldpos = pos ; pos = e -> counters . pcnt ; e -> counters . pcnt = 0 ; if ( pos == oldpos ) goto next ; e = ( struct ip6t_entry * ) ( entry0 + pos ) ; } while ( oldpos == pos + e -> next_offset ) ; size = e -> next_offset ; e = ( struct ip6t_entry * ) ( entry0 + pos + size ) ; e -> counters . pcnt = pos ; pos += size ; } else { int newpos = t -> verdict ; if ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 && newpos >= 0 ) { if ( newpos > newinfo -> size - sizeof ( struct ip6t_entry ) ) { duprintf ( \"mark_source_chains:<S2SV_blank>\" \"bad<S2SV_blank>verdict<S2SV_blank>(%i)\\\\n\" , newpos ) ; return 0 ; } duprintf ( \"Jump<S2SV_blank>rule<S2SV_blank>%u<S2SV_blank>-><S2SV_blank>%u\\\\n\" , pos , newpos ) ; } else { newpos = pos + e -> next_offset ; } e = ( struct ip6t_entry * ) ( entry0 + newpos ) ; e -> counters . pcnt = pos ; pos = newpos ; } } next : duprintf ( \"Finished<S2SV_blank>chain<S2SV_blank>%u\\\\n\" , hook ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( unconditional ( e <S2SV_ModEnd> ) && ( <S2SV_ModStart> verdict < 0 <S2SV_ModEnd> ) || visited\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4027\n\n```\nCWE-264 static void rd_release_device_space ( struct rd_dev * rd_dev ) { <S2SV_StartBug> u32 i , j , page_count = 0 , sg_per_table ; <S2SV_EndBug> struct rd_dev_sg_table * sg_table ; struct page * pg ; struct scatterlist * sg ; if ( ! rd_dev -> sg_table_array || ! rd_dev -> sg_table_count ) return ; <S2SV_StartBug> sg_table = rd_dev -> sg_table_array ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < rd_dev -> sg_table_count ; i ++ ) { <S2SV_EndBug> sg = sg_table [ i ] . sg_table ; sg_per_table = sg_table [ i ] . rd_sg_count ; for ( j = 0 ; j < sg_per_table ; j ++ ) { pg = sg_page ( & sg [ j ] ) ; if ( pg ) { __free_page ( pg ) ; page_count ++ ; } } kfree ( sg ) ; } pr_debug ( \"CORE_RD[%u]<S2SV_blank>-<S2SV_blank>Released<S2SV_blank>device<S2SV_blank>space<S2SV_blank>for<S2SV_blank>Ramdisk\" \"<S2SV_blank>Device<S2SV_blank>ID:<S2SV_blank>%u,<S2SV_blank>pages<S2SV_blank>%u<S2SV_blank>in<S2SV_blank>%u<S2SV_blank>tables<S2SV_blank>total<S2SV_blank>bytes<S2SV_blank>%lu\\\\n\" , rd_dev -> rd_host -> rd_host_id , rd_dev -> rd_dev_id , page_count , rd_dev -> sg_table_count , ( unsigned long ) page_count * PAGE_SIZE ) ; <S2SV_StartBug> kfree ( sg_table ) ; <S2SV_EndBug> rd_dev -> sg_table_array = NULL ; rd_dev -> sg_table_count = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { u32 page_count <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) return ; page_count = rd_release_sgl_table ( rd_dev , <S2SV_ModEnd> rd_dev -> sg_table_array <S2SV_ModStart> rd_dev -> sg_table_array , <S2SV_ModEnd> rd_dev -> sg_table_count <S2SV_ModStart> rd_dev -> sg_table_count ) ; <S2SV_ModEnd> pr_debug ( \"CORE_RD[%u]<S2SV_blank>-<S2SV_blank>Released<S2SV_blank>device<S2SV_blank>space<S2SV_blank>for<S2SV_blank>Ramdisk\" <S2SV_ModStart> PAGE_SIZE ) ; <S2SV_ModEnd> rd_dev -> sg_table_array\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3119\n\n```\nCWE-000 static krb5_error_code process_db_args ( krb5_context context , char * * db_args , xargs_t * xargs , OPERATION optype ) { int i = 0 ; krb5_error_code st = 0 ; char * arg = NULL , * arg_val = NULL ; char * * dptr = NULL ; unsigned int arg_val_len = 0 ; if ( db_args ) { for ( i = 0 ; db_args [ i ] ; ++ i ) { arg = strtok_r ( db_args [ i ] , \"=\" , & arg_val ) ; <S2SV_StartBug> if ( strcmp ( arg , TKTPOLICY_ARG ) == 0 ) { <S2SV_EndBug> dptr = & xargs -> tktpolicydn ; } else { if ( strcmp ( arg , USERDN_ARG ) == 0 ) { if ( optype == MODIFY_PRINCIPAL || xargs -> dn != NULL || xargs -> containerdn != NULL || xargs -> linkdn != NULL ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>not<S2SV_blank>supported\" ) , arg ) ; goto cleanup ; } dptr = & xargs -> dn ; } else if ( strcmp ( arg , CONTAINERDN_ARG ) == 0 ) { if ( optype == MODIFY_PRINCIPAL || xargs -> dn != NULL || xargs -> containerdn != NULL ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>not<S2SV_blank>supported\" ) , arg ) ; goto cleanup ; } dptr = & xargs -> containerdn ; } else if ( strcmp ( arg , LINKDN_ARG ) == 0 ) { if ( xargs -> dn != NULL || xargs -> linkdn != NULL ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>not<S2SV_blank>supported\" ) , arg ) ; goto cleanup ; } dptr = & xargs -> linkdn ; } else { st = EINVAL ; k5_setmsg ( context , st , _ ( \"unknown<S2SV_blank>option:<S2SV_blank>%s\" ) , arg ) ; goto cleanup ; } xargs -> dn_from_kbd = TRUE ; if ( arg_val == NULL || strlen ( arg_val ) == 0 ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>value<S2SV_blank>missing\" ) , arg ) ; goto cleanup ; } } if ( arg_val == NULL ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"%s<S2SV_blank>option<S2SV_blank>value<S2SV_blank>missing\" ) , arg ) ; goto cleanup ; } arg_val_len = strlen ( arg_val ) + 1 ; if ( strcmp ( arg , TKTPOLICY_ARG ) == 0 ) { if ( ( st = krb5_ldap_name_to_policydn ( context , arg_val , dptr ) ) != 0 ) goto cleanup ; } else { * dptr = k5memdup ( arg_val , arg_val_len , & st ) ; if ( * dptr == NULL ) goto cleanup ; } } } cleanup : return st ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arg_val ) ; arg = ( arg != NULL ) ? arg : \"\" ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0101\n\n```\nCWE-20 sctp_disposition_t sctp_sf_do_5_1D_ce ( struct net * net , const struct sctp_endpoint * ep , const struct sctp_association * asoc , const sctp_subtype_t type , void * arg , sctp_cmd_seq_t * commands ) { struct sctp_chunk * chunk = arg ; struct sctp_association * new_asoc ; sctp_init_chunk_t * peer_init ; struct sctp_chunk * repl ; struct sctp_ulpevent * ev , * ai_ev = NULL ; int error = 0 ; struct sctp_chunk * err_chk_p ; struct sock * sk ; if ( ep == sctp_sk ( net -> sctp . ctl_sock ) -> ep ) { SCTP_INC_STATS ( net , SCTP_MIB_OUTOFBLUES ) ; return sctp_sf_tabort_8_4_8 ( net , ep , asoc , type , arg , commands ) ; } if ( ! sctp_chunk_length_valid ( chunk , sizeof ( sctp_chunkhdr_t ) ) ) return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; sk = ep -> base . sk ; if ( ! sctp_sstate ( sk , LISTENING ) || ( sctp_style ( sk , TCP ) && sk_acceptq_is_full ( sk ) ) ) return sctp_sf_tabort_8_4_8 ( net , ep , asoc , type , arg , commands ) ; chunk -> subh . cookie_hdr = ( struct sctp_signed_cookie * ) chunk -> skb -> data ; if ( ! pskb_pull ( chunk -> skb , ntohs ( chunk -> chunk_hdr -> length ) - sizeof ( sctp_chunkhdr_t ) ) ) goto nomem ; new_asoc = sctp_unpack_cookie ( ep , asoc , chunk , GFP_ATOMIC , & error , & err_chk_p ) ; if ( ! new_asoc ) { switch ( error ) { case - SCTP_IERROR_NOMEM : goto nomem ; case - SCTP_IERROR_STALE_COOKIE : sctp_send_stale_cookie_err ( net , ep , asoc , chunk , commands , err_chk_p ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; case - SCTP_IERROR_BAD_SIG : default : return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } } peer_init = & chunk -> subh . cookie_hdr -> c . peer_init [ 0 ] ; if ( ! sctp_process_init ( new_asoc , chunk , & chunk -> subh . cookie_hdr -> c . peer_addr , peer_init , GFP_ATOMIC ) ) goto nomem_init ; error = sctp_auth_asoc_init_active_key ( new_asoc , GFP_ATOMIC ) ; if ( error ) goto nomem_init ; if ( chunk -> auth_chunk ) { struct sctp_chunk auth ; sctp_ierror_t ret ; <S2SV_StartBug> auth . skb = chunk -> auth_chunk ; <S2SV_EndBug> auth . asoc = chunk -> asoc ; auth . sctp_hdr = chunk -> sctp_hdr ; auth . chunk_hdr = ( sctp_chunkhdr_t * ) skb_push ( chunk -> auth_chunk , sizeof ( sctp_chunkhdr_t ) ) ; skb_pull ( chunk -> auth_chunk , sizeof ( sctp_chunkhdr_t ) ) ; auth . transport = chunk -> transport ; ret = sctp_sf_authenticate ( net , ep , new_asoc , type , & auth ) ; kfree_skb ( chunk -> auth_chunk ) ; if ( ret != SCTP_IERROR_NO_ERROR ) { sctp_association_free ( new_asoc ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; } } repl = sctp_make_cookie_ack ( new_asoc , chunk ) ; if ( ! repl ) goto nomem_init ; ev = sctp_ulpevent_make_assoc_change ( new_asoc , 0 , SCTP_COMM_UP , 0 , new_asoc -> c . sinit_num_ostreams , new_asoc -> c . sinit_max_instreams , NULL , GFP_ATOMIC ) ; if ( ! ev ) goto nomem_ev ; if ( new_asoc -> peer . adaptation_ind ) { ai_ev = sctp_ulpevent_make_adaptation_indication ( new_asoc , GFP_ATOMIC ) ; if ( ! ai_ev ) goto nomem_aiev ; } sctp_add_cmd_sf ( commands , SCTP_CMD_NEW_ASOC , SCTP_ASOC ( new_asoc ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_NEW_STATE , SCTP_STATE ( SCTP_STATE_ESTABLISHED ) ) ; SCTP_INC_STATS ( net , SCTP_MIB_CURRESTAB ) ; SCTP_INC_STATS ( net , SCTP_MIB_PASSIVEESTABS ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_HB_TIMERS_START , SCTP_NULL ( ) ) ; if ( new_asoc -> timeouts [ SCTP_EVENT_TIMEOUT_AUTOCLOSE ] ) sctp_add_cmd_sf ( commands , SCTP_CMD_TIMER_START , SCTP_TO ( SCTP_EVENT_TIMEOUT_AUTOCLOSE ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_REPLY , SCTP_CHUNK ( repl ) ) ; sctp_add_cmd_sf ( commands , SCTP_CMD_EVENT_ULP , SCTP_ULPEVENT ( ev ) ) ; if ( ai_ev ) sctp_add_cmd_sf ( commands , SCTP_CMD_EVENT_ULP , SCTP_ULPEVENT ( ai_ev ) ) ; return SCTP_DISPOSITION_CONSUME ; nomem_aiev : sctp_ulpevent_free ( ev ) ; nomem_ev : sctp_chunk_free ( repl ) ; nomem_init : sctp_association_free ( new_asoc ) ; nomem : return SCTP_DISPOSITION_NOMEM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sctp_ierror_t ret ; if ( ! net -> sctp . auth_enable || ! new_asoc -> peer . auth_capable ) { kfree_skb ( chunk -> auth_chunk ) ; sctp_association_free ( new_asoc ) ; return sctp_sf_pdiscard ( net , ep , asoc , type , arg , commands ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int64_t rd_pick_intra4x4block ( VP9_COMP * cpi , MACROBLOCK * x , int ib , <S2SV_EndBug> MB_PREDICTION_MODE * best_mode , const int * bmode_costs , ENTROPY_CONTEXT * a , ENTROPY_CONTEXT * l , int * bestrate , int * bestratey , int64_t * bestdistortion , BLOCK_SIZE bsize , int64_t rd_thresh ) { <S2SV_StartBug> MB_PREDICTION_MODE mode ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; int64_t best_rd = rd_thresh ; struct macroblock_plane * p = & x -> plane [ 0 ] ; struct macroblockd_plane * pd = & xd -> plane [ 0 ] ; const int src_stride = p -> src . stride ; const int dst_stride = pd -> dst . stride ; <S2SV_StartBug> const uint8_t * src_init = & p -> src . buf [ raster_block_offset ( BLOCK_8X8 , ib , <S2SV_EndBug> src_stride ) ] ; <S2SV_StartBug> uint8_t * dst_init = & pd -> dst . buf [ raster_block_offset ( BLOCK_8X8 , ib , <S2SV_EndBug> dst_stride ) ] ; ENTROPY_CONTEXT ta [ 2 ] , tempa [ 2 ] ; ENTROPY_CONTEXT tl [ 2 ] , templ [ 2 ] ; const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup [ bsize ] ; const int num_4x4_blocks_high = num_4x4_blocks_high_lookup [ bsize ] ; int idx , idy ; uint8_t best_dst [ 8 * 8 ] ; <S2SV_StartBug> assert ( ib < 4 ) ; <S2SV_EndBug> vpx_memcpy ( ta , a , sizeof ( ta ) ) ; <S2SV_StartBug> vpx_memcpy ( tl , l , sizeof ( tl ) ) ; <S2SV_EndBug> <S2SV_StartBug> xd -> mi [ 0 ] -> mbmi . tx_size = TX_4X4 ; <S2SV_EndBug> for ( mode = DC_PRED ; mode <= TM_PRED ; ++ mode ) { int64_t this_rd ; int ratey = 0 ; int64_t distortion = 0 ; int rate = bmode_costs [ mode ] ; if ( ! ( cpi -> sf . intra_y_mode_mask [ TX_4X4 ] & ( 1 << mode ) ) ) continue ; if ( cpi -> sf . mode_search_skip_flags & FLAG_SKIP_INTRA_DIRMISMATCH ) { if ( conditional_skipintra ( mode , * best_mode ) ) continue ; } <S2SV_StartBug> vpx_memcpy ( tempa , ta , sizeof ( ta ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( templ , tl , sizeof ( tl ) ) ; <S2SV_EndBug> for ( idy = 0 ; idy < num_4x4_blocks_high ; ++ idy ) { for ( idx = 0 ; idx < num_4x4_blocks_wide ; ++ idx ) { <S2SV_StartBug> const int block = ib + idy * 2 + idx ; <S2SV_EndBug> const uint8_t * const src = & src_init [ idx * 4 + idy * 4 * src_stride ] ; uint8_t * const dst = & dst_init [ idx * 4 + idy * 4 * dst_stride ] ; <S2SV_StartBug> int16_t * const src_diff = raster_block_offset_int16 ( BLOCK_8X8 , block , <S2SV_EndBug> p -> src_diff ) ; <S2SV_StartBug> int16_t * const coeff = BLOCK_OFFSET ( x -> plane [ 0 ] . coeff , block ) ; <S2SV_EndBug> xd -> mi [ 0 ] -> bmi [ block ] . as_mode = mode ; <S2SV_StartBug> vp9_predict_intra_block ( xd , block , 1 , <S2SV_EndBug> TX_4X4 , mode , x -> skip_encode ? src : dst , x -> skip_encode ? src_stride : dst_stride , <S2SV_StartBug> dst , dst_stride , idx , idy , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_subtract_block ( 4 , 4 , src_diff , 8 , src , src_stride , dst , dst_stride ) ; <S2SV_EndBug> if ( xd -> lossless ) { const scan_order * so = & vp9_default_scan_orders [ TX_4X4 ] ; <S2SV_StartBug> vp9_fwht4x4 ( src_diff , coeff , 8 ) ; <S2SV_EndBug> vp9_regular_quantize_b_4x4 ( x , 0 , block , so -> scan , so -> iscan ) ; ratey += cost_coeffs ( x , 0 , block , tempa + idx , templ + idy , TX_4X4 , so -> scan , so -> neighbors , cpi -> sf . use_fast_coef_costing ) ; if ( RDCOST ( x -> rdmult , x -> rddiv , ratey , distortion ) >= best_rd ) <S2SV_StartBug> goto next ; <S2SV_EndBug> vp9_iwht4x4_add ( BLOCK_OFFSET ( pd -> dqcoeff , block ) , dst , dst_stride , <S2SV_StartBug> p -> eobs [ block ] ) ; <S2SV_EndBug> } else { int64_t unused ; const TX_TYPE tx_type = get_tx_type_4x4 ( PLANE_TYPE_Y , xd , block ) ; const scan_order * so = & vp9_scan_orders [ TX_4X4 ] [ tx_type ] ; <S2SV_StartBug> vp9_fht4x4 ( src_diff , coeff , 8 , tx_type ) ; <S2SV_EndBug> vp9_regular_quantize_b_4x4 ( x , 0 , block , so -> scan , so -> iscan ) ; ratey += cost_coeffs ( x , 0 , block , tempa + idx , templ + idy , TX_4X4 , so -> scan , so -> neighbors , cpi -> sf . use_fast_coef_costing ) ; <S2SV_StartBug> distortion += vp9_block_error ( coeff , BLOCK_OFFSET ( pd -> dqcoeff , block ) , <S2SV_EndBug> <S2SV_StartBug> 16 , & unused ) >> 2 ; <S2SV_EndBug> if ( RDCOST ( x -> rdmult , x -> rddiv , ratey , distortion ) >= best_rd ) <S2SV_StartBug> goto next ; <S2SV_EndBug> vp9_iht4x4_add ( tx_type , BLOCK_OFFSET ( pd -> dqcoeff , block ) , <S2SV_StartBug> dst , dst_stride , p -> eobs [ block ] ) ; <S2SV_EndBug> } } } rate += ratey ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate , distortion ) ; if ( this_rd < best_rd ) { * bestrate = rate ; * bestratey = ratey ; * bestdistortion = distortion ; best_rd = this_rd ; * best_mode = mode ; <S2SV_StartBug> vpx_memcpy ( a , tempa , sizeof ( tempa ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( l , templ , sizeof ( templ ) ) ; <S2SV_EndBug> for ( idy = 0 ; idy < num_4x4_blocks_high * 4 ; ++ idy ) <S2SV_StartBug> vpx_memcpy ( best_dst + idy * 8 , dst_init + idy * dst_stride , <S2SV_EndBug> <S2SV_StartBug> num_4x4_blocks_wide * 4 ) ; <S2SV_EndBug> } <S2SV_StartBug> next : <S2SV_EndBug> { } } if ( best_rd >= rd_thresh || x -> skip_encode ) return best_rd ; for ( idy = 0 ; idy < num_4x4_blocks_high * 4 ; ++ idy ) <S2SV_StartBug> vpx_memcpy ( dst_init + idy * dst_stride , best_dst + idy * 8 , <S2SV_EndBug> <S2SV_StartBug> num_4x4_blocks_wide * 4 ) ; <S2SV_EndBug> return best_rd ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x , int row , int col , PREDICTION_MODE <S2SV_ModEnd> * best_mode , <S2SV_ModStart> rd_thresh ) { PREDICTION_MODE <S2SV_ModEnd> mode ; MACROBLOCKD <S2SV_ModStart> . buf [ row * 4 * src_stride + col * 4 <S2SV_ModEnd> ] ; uint8_t <S2SV_ModStart> . buf [ row * 4 * src_stride + col * 4 <S2SV_ModEnd> ] ; ENTROPY_CONTEXT <S2SV_ModStart> 8 ] ; # if CONFIG_VP9_HIGHBITDEPTH uint16_t best_dst16 [ 8 * 8 ] ; # endif memcpy <S2SV_ModEnd> ( ta , <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( tl , <S2SV_ModStart> = TX_4X4 ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { <S2SV_ModStart> continue ; } memcpy <S2SV_ModEnd> ( tempa , <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( templ , <S2SV_ModStart> int block = ( row + idy ) <S2SV_ModEnd> * 2 + <S2SV_ModStart> * 2 + ( col + idx ) <S2SV_ModEnd> ; const uint8_t <S2SV_ModStart> const src_diff = vp9_raster_block_offset_int16 <S2SV_ModEnd> ( BLOCK_8X8 , <S2SV_ModStart> src_diff ) ; tran_low_t <S2SV_ModEnd> * const coeff <S2SV_ModStart> ( xd , <S2SV_ModEnd> 1 , TX_4X4 <S2SV_ModStart> , dst_stride , col + idx , row + idy , 0 ) ; vpx_highbd_subtract_block <S2SV_ModEnd> ( 4 , <S2SV_ModStart> dst , dst_stride , xd -> bd <S2SV_ModStart> TX_4X4 ] ; vp9_highbd_fwht4x4 <S2SV_ModEnd> ( src_diff , <S2SV_ModStart> best_rd ) goto next_highbd ; vp9_highbd_iwht4x4_add <S2SV_ModEnd> ( BLOCK_OFFSET ( <S2SV_ModStart> [ block ] , xd -> bd <S2SV_ModStart> tx_type ] ; if ( tx_type == DCT_DCT ) vpx_highbd_fdct4x4 ( src_diff , coeff , 8 ) ; else vp9_highbd_fht4x4 <S2SV_ModEnd> ( src_diff , <S2SV_ModStart> ; distortion += vp9_highbd_block_error ( <S2SV_ModEnd> coeff , BLOCK_OFFSET <S2SV_ModStart> , & unused , xd -> bd <S2SV_ModStart> best_rd ) goto next_highbd ; vp9_highbd_iht4x4_add <S2SV_ModEnd> ( tx_type , <S2SV_ModStart> [ block ] , xd -> bd <S2SV_ModStart> = mode ; memcpy <S2SV_ModEnd> ( a , <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( l , <S2SV_ModStart> ++ idy ) { memcpy ( best_dst16 <S2SV_ModEnd> + idy * <S2SV_ModStart> * 8 , CONVERT_TO_SHORTPTR ( <S2SV_ModStart> idy * dst_stride ) <S2SV_ModStart> num_4x4_blocks_wide * 4 * sizeof ( uint16_t ) <S2SV_ModStart> ) ; } } next_highbd <S2SV_ModEnd> : { } <S2SV_ModStart> ++ idy ) { memcpy ( CONVERT_TO_SHORTPTR <S2SV_ModEnd> ( dst_init + <S2SV_ModStart> idy * dst_stride ) , best_dst16 <S2SV_ModEnd> + idy * <S2SV_ModStart> num_4x4_blocks_wide * 4 * sizeof ( uint16_t ) ) ; } <S2SV_ModEnd> return best_rd ; <S2SV_ModStart> best_rd ; } # endif for ( mode = DC_PRED ; mode <= TM_PRED ; ++ mode ) { int64_t this_rd ; int ratey = 0 ; int64_t distortion = 0 ; int rate = bmode_costs [ mode ] ; if ( ! ( cpi -> sf . intra_y_mode_mask [ TX_4X4 ] & ( 1 << mode ) ) ) continue ; if ( cpi -> sf . mode_search_skip_flags & FLAG_SKIP_INTRA_DIRMISMATCH ) { if ( conditional_skipintra ( mode , * best_mode ) ) continue ; } memcpy ( tempa , ta , sizeof ( ta ) ) ; memcpy ( templ , tl , sizeof ( tl ) ) ; for ( idy = 0 ; idy < num_4x4_blocks_high ; ++ idy ) { for ( idx = 0 ; idx < num_4x4_blocks_wide ; ++ idx ) { const int block = ( row + idy ) * 2 + ( col + idx ) ; const uint8_t * const src = & src_init [ idx * 4 + idy * 4 * src_stride ] ; uint8_t * const dst = & dst_init [ idx * 4 + idy * 4 * dst_stride ] ; int16_t * const src_diff = vp9_raster_block_offset_int16 ( BLOCK_8X8 , block , p -> src_diff ) ; tran_low_t * const coeff = BLOCK_OFFSET ( x -> plane [ 0 ] . coeff , block ) ; xd -> mi [ 0 ] -> bmi [ block ] . as_mode = mode ; vp9_predict_intra_block ( xd , 1 , TX_4X4 , mode , x -> skip_encode ? src : dst , x -> skip_encode ? src_stride : dst_stride , dst , dst_stride , col + idx , row + idy , 0 ) ; vpx_subtract_block ( 4 , 4 , src_diff , 8 , src , src_stride , dst , dst_stride ) ; if ( xd -> lossless ) { const scan_order * so = & vp9_default_scan_orders [ TX_4X4 ] ; vp9_fwht4x4 ( src_diff , coeff , 8 ) ; vp9_regular_quantize_b_4x4 ( x , 0 , block , so -> scan , so -> iscan ) ; ratey += cost_coeffs ( x , 0 , block , tempa + idx , templ + idy , TX_4X4 , so -> scan , so -> neighbors , cpi -> sf . use_fast_coef_costing ) ; if ( RDCOST ( x -> rdmult , x -> rddiv , ratey , distortion ) >= best_rd ) goto next ; vp9_iwht4x4_add ( BLOCK_OFFSET ( pd -> dqcoeff , block ) , dst , dst_stride , p -> eobs [ block ] ) ; } else { int64_t unused ; const TX_TYPE tx_type = get_tx_type_4x4 ( PLANE_TYPE_Y , xd , block ) ; const scan_order * so = & vp9_scan_orders [ TX_4X4 ] [ tx_type ] ; vp9_fht4x4 ( src_diff , coeff , 8 , tx_type ) ; vp9_regular_quantize_b_4x4 ( x , 0 , block , so -> scan , so -> iscan ) ; ratey += cost_coeffs ( x , 0 , block , tempa + idx , templ + idy , TX_4X4 , so -> scan , so -> neighbors , cpi -> sf . use_fast_coef_costing ) ; distortion += vp9_block_error ( coeff , BLOCK_OFFSET ( pd -> dqcoeff , block ) , 16 , & unused ) >> 2 ; if ( RDCOST ( x -> rdmult , x -> rddiv , ratey , distortion ) >= best_rd ) goto next ; vp9_iht4x4_add ( tx_type , BLOCK_OFFSET ( pd -> dqcoeff , block ) , dst , dst_stride , p -> eobs [ block ] ) ; } } } rate += ratey ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate , distortion ) ; if ( this_rd < best_rd ) { * bestrate = rate ; * bestratey = ratey ; * bestdistortion = distortion ; best_rd = this_rd ; * best_mode = mode ; memcpy ( a , tempa , sizeof ( tempa ) ) ; memcpy ( l , templ , sizeof ( templ ) ) ; for ( idy = 0 ; idy < num_4x4_blocks_high * 4 ; ++ idy ) memcpy ( best_dst + idy * 8 , dst_init + idy * dst_stride , num_4x4_blocks_wide * 4 ) ; } next : { } } if ( best_rd >= rd_thresh || x -> skip_encode ) return best_rd ; for ( idy = 0 ; idy < num_4x4_blocks_high * 4 ; ++ idy ) memcpy ( dst_init + idy * dst_stride , best_dst + idy * 8 , num_4x4_blocks_wide * 4 ) ; return best_rd ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999015\n\n```\nCWE-125 <S2SV_StartBug> static void read_quant_matrix_ext ( MpegEncContext * s , GetBitContext * gb ) <S2SV_EndBug> { int i , j , v ; <S2SV_StartBug> if ( get_bits1 ( gb ) ) { <S2SV_EndBug> for ( i = 0 ; i < 64 ; i ++ ) { v = get_bits ( gb , 8 ) ; j = s -> idsp . idct_permutation [ ff_zigzag_direct [ i ] ] ; s -> intra_matrix [ j ] = v ; s -> chroma_intra_matrix [ j ] = v ; } } if ( get_bits1 ( gb ) ) { <S2SV_StartBug> for ( i = 0 ; i < 64 ; i ++ ) { <S2SV_EndBug> get_bits ( gb , 8 ) ; } } <S2SV_StartBug> if ( get_bits1 ( gb ) ) { <S2SV_EndBug> for ( i = 0 ; i < 64 ; i ++ ) { v = get_bits ( gb , 8 ) ; j = s -> idsp . idct_permutation [ ff_zigzag_direct [ i ] ] ; s -> chroma_intra_matrix [ j ] = v ; } } if ( get_bits1 ( gb ) ) { <S2SV_StartBug> for ( i = 0 ; i < 64 ; i ++ ) { <S2SV_EndBug> get_bits ( gb , 8 ) ; } } next_start_code_studio ( gb ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> read_quant_matrix_ext ( MpegEncContext <S2SV_ModStart> ) ) { if ( get_bits_left ( gb ) < 64 * 8 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ) ) { if ( get_bits_left ( gb ) < 64 * 8 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ) ) { if ( get_bits_left ( gb ) < 64 * 8 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ) ) { if ( get_bits_left ( gb ) < 64 * 8 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> gb ) ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_remove_common ( VP9_COMMON * cm ) { <S2SV_StartBug> vp9_free_frame_buffers ( cm ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_free_internal_frame_buffers ( & cm -> int_frame_buffers ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cm ) { vp9_free_context_buffers <S2SV_ModEnd> ( cm ) <S2SV_ModStart> cm ) ; vpx_free ( cm -> fc ) ; cm -> fc = NULL ; vpx_free ( cm -> frame_contexts ) ; cm -> frame_contexts = NULL <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15649\n\n```\nCWE-362 static int packet_do_bind ( struct sock * sk , const char * name , int ifindex , __be16 proto ) { struct packet_sock * po = pkt_sk ( sk ) ; struct net_device * dev_curr ; __be16 proto_curr ; bool need_rehook ; struct net_device * dev = NULL ; int ret = 0 ; bool unlisted = false ; <S2SV_StartBug> if ( po -> fanout ) <S2SV_EndBug> <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> spin_lock ( & po -> bind_lock ) ; rcu_read_lock ( ) ; if ( name ) { dev = dev_get_by_name_rcu ( sock_net ( sk ) , name ) ; if ( ! dev ) { ret = - ENODEV ; goto out_unlock ; } } else if ( ifindex ) { dev = dev_get_by_index_rcu ( sock_net ( sk ) , ifindex ) ; if ( ! dev ) { ret = - ENODEV ; goto out_unlock ; } } if ( dev ) dev_hold ( dev ) ; proto_curr = po -> prot_hook . type ; dev_curr = po -> prot_hook . dev ; need_rehook = proto_curr != proto || dev_curr != dev ; if ( need_rehook ) { if ( po -> running ) { rcu_read_unlock ( ) ; __unregister_prot_hook ( sk , true ) ; rcu_read_lock ( ) ; dev_curr = po -> prot_hook . dev ; if ( dev ) unlisted = ! dev_get_by_index_rcu ( sock_net ( sk ) , dev -> ifindex ) ; } po -> num = proto ; po -> prot_hook . type = proto ; if ( unlikely ( unlisted ) ) { dev_put ( dev ) ; po -> prot_hook . dev = NULL ; po -> ifindex = - 1 ; packet_cached_dev_reset ( po ) ; } else { po -> prot_hook . dev = dev ; po -> ifindex = dev ? dev -> ifindex : 0 ; packet_cached_dev_assign ( po , dev ) ; } } if ( dev_curr ) dev_put ( dev_curr ) ; if ( proto == 0 || ! need_rehook ) goto out_unlock ; if ( ! unlisted && ( ! dev || ( dev -> flags & IFF_UP ) ) ) { register_prot_hook ( sk ) ; } else { sk -> sk_err = ENETDOWN ; if ( ! sock_flag ( sk , SOCK_DEAD ) ) sk -> sk_error_report ( sk ) ; } out_unlock : rcu_read_unlock ( ) ; spin_unlock ( & po -> bind_lock ) ; release_sock ( sk ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = false ; lock_sock ( sk ) ; spin_lock ( & po -> bind_lock ) ; rcu_read_lock ( ) ; <S2SV_ModStart> -> fanout ) { ret = <S2SV_ModEnd> - EINVAL ; <S2SV_ModStart> - EINVAL ; goto out_unlock ; } <S2SV_ModEnd> if ( name\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14882\n\n```\nCWE-125 void icmp6_print ( netdissect_options * ndo , const u_char * bp , u_int length , const u_char * bp2 , int fragmented ) { const struct icmp6_hdr * dp ; const struct ip6_hdr * ip ; const struct ip6_hdr * oip ; const struct udphdr * ouh ; int dport ; const u_char * ep ; u_int prot ; dp = ( const struct icmp6_hdr * ) bp ; ip = ( const struct ip6_hdr * ) bp2 ; oip = ( const struct ip6_hdr * ) ( dp + 1 ) ; ep = ndo -> ndo_snapend ; ND_TCHECK ( dp -> icmp6_cksum ) ; if ( ndo -> ndo_vflag && ! fragmented ) { uint16_t sum , udp_sum ; if ( ND_TTEST2 ( bp [ 0 ] , length ) ) { udp_sum = EXTRACT_16BITS ( & dp -> icmp6_cksum ) ; sum = icmp6_cksum ( ndo , ip , dp , length ) ; if ( sum != 0 ) ND_PRINT ( ( ndo , \"[bad<S2SV_blank>icmp6<S2SV_blank>cksum<S2SV_blank>0x%04x<S2SV_blank>-><S2SV_blank>0x%04x!]<S2SV_blank>\" , udp_sum , in_cksum_shouldbe ( udp_sum , sum ) ) ) ; else ND_PRINT ( ( ndo , \"[icmp6<S2SV_blank>sum<S2SV_blank>ok]<S2SV_blank>\" ) ) ; } } ND_PRINT ( ( ndo , \"ICMP6,<S2SV_blank>%s\" , tok2str ( icmp6_type_values , \"unknown<S2SV_blank>icmp6<S2SV_blank>type<S2SV_blank>(%u)\" , dp -> icmp6_type ) ) ) ; if ( ndo -> ndo_vflag && ( dp -> icmp6_type == ND_ROUTER_SOLICIT || dp -> icmp6_type == ND_ROUTER_ADVERT || dp -> icmp6_type == ND_NEIGHBOR_ADVERT || dp -> icmp6_type == ND_NEIGHBOR_SOLICIT || dp -> icmp6_type == ND_REDIRECT || dp -> icmp6_type == ICMP6_HADISCOV_REPLY || dp -> icmp6_type == ICMP6_MOBILEPREFIX_ADVERT ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; switch ( dp -> icmp6_type ) { case ICMP6_DST_UNREACH : ND_TCHECK ( oip -> ip6_dst ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , tok2str ( icmp6_dst_unreach_code_values , \"unknown<S2SV_blank>unreach<S2SV_blank>code<S2SV_blank>(%u)\" , dp -> icmp6_code ) ) ) ; switch ( dp -> icmp6_code ) { case ICMP6_DST_UNREACH_NOROUTE : case ICMP6_DST_UNREACH_ADMIN : case ICMP6_DST_UNREACH_ADDR : ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) ) ) ; break ; case ICMP6_DST_UNREACH_BEYONDSCOPE : ND_PRINT ( ( ndo , \"<S2SV_blank>%s,<S2SV_blank>source<S2SV_blank>address<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , ip6addr_string ( ndo , & oip -> ip6_src ) ) ) ; break ; case ICMP6_DST_UNREACH_NOPORT : if ( ( ouh = get_upperlayer ( ndo , ( const u_char * ) oip , & prot ) ) == NULL ) goto trunc ; dport = EXTRACT_16BITS ( & ouh -> uh_dport ) ; switch ( prot ) { case IPPROTO_TCP : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>tcp<S2SV_blank>port<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , tcpport_string ( ndo , dport ) ) ) ; break ; case IPPROTO_UDP : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>udp<S2SV_blank>port<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , udpport_string ( ndo , dport ) ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>port<S2SV_blank>%d<S2SV_blank>unreachable\" , ip6addr_string ( ndo , & oip -> ip6_dst ) , oip -> ip6_nxt , dport ) ) ; break ; } break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , bp , \"\\\\n\\\\t\" , length ) ; return ; } break ; } break ; case ICMP6_PACKET_TOO_BIG : ND_TCHECK ( dp -> icmp6_mtu ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>mtu<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_mtu ) ) ) ; break ; case ICMP6_TIME_EXCEEDED : ND_TCHECK ( oip -> ip6_dst ) ; switch ( dp -> icmp6_code ) { case ICMP6_TIME_EXCEED_TRANSIT : ND_PRINT ( ( ndo , \"<S2SV_blank>for<S2SV_blank>%s\" , ip6addr_string ( ndo , & oip -> ip6_dst ) ) ) ; break ; case ICMP6_TIME_EXCEED_REASSEMBLY : ND_PRINT ( ( ndo , \"<S2SV_blank>(reassembly)\" ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>unknown<S2SV_blank>code<S2SV_blank>(%u)\" , dp -> icmp6_code ) ) ; break ; } break ; case ICMP6_PARAM_PROB : ND_TCHECK ( oip -> ip6_dst ) ; switch ( dp -> icmp6_code ) { case ICMP6_PARAMPROB_HEADER : ND_PRINT ( ( ndo , \",<S2SV_blank>erroneous<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; case ICMP6_PARAMPROB_NEXTHEADER : ND_PRINT ( ( ndo , \",<S2SV_blank>next<S2SV_blank>header<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; case ICMP6_PARAMPROB_OPTION : ND_PRINT ( ( ndo , \",<S2SV_blank>option<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , EXTRACT_32BITS ( & dp -> icmp6_pptr ) ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>code-#%d\" , dp -> icmp6_code ) ) ; break ; } break ; case ICMP6_ECHO_REQUEST : case ICMP6_ECHO_REPLY : ND_TCHECK ( dp -> icmp6_seq ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_16BITS ( & dp -> icmp6_seq ) ) ) ; break ; case ICMP6_MEMBERSHIP_QUERY : if ( length == MLD_MINLEN ) { mld6_print ( ndo , ( const u_char * ) dp ) ; } else if ( length >= MLDV2_MINLEN ) { ND_PRINT ( ( ndo , \"<S2SV_blank>v2\" ) ) ; mldv2_query_print ( ndo , ( const u_char * ) dp , length ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>unknown-version<S2SV_blank>(len<S2SV_blank>%u)<S2SV_blank>\" , length ) ) ; } break ; case ICMP6_MEMBERSHIP_REPORT : mld6_print ( ndo , ( const u_char * ) dp ) ; break ; case ICMP6_MEMBERSHIP_REDUCTION : mld6_print ( ndo , ( const u_char * ) dp ) ; break ; case ND_ROUTER_SOLICIT : # define RTSOLLEN 8 if ( ndo -> ndo_vflag ) { icmp6_opt_print ( ndo , ( const u_char * ) dp + RTSOLLEN , length - RTSOLLEN ) ; } break ; case ND_ROUTER_ADVERT : # define RTADVLEN 16 if ( ndo -> ndo_vflag ) { const struct nd_router_advert * p ; p = ( const struct nd_router_advert * ) dp ; ND_TCHECK ( p -> nd_ra_retransmit ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\thop<S2SV_blank>limit<S2SV_blank>%u,<S2SV_blank>Flags<S2SV_blank>[%s]\" \",<S2SV_blank>pref<S2SV_blank>%s,<S2SV_blank>router<S2SV_blank>lifetime<S2SV_blank>%us,<S2SV_blank>reachable<S2SV_blank>time<S2SV_blank>%ums,<S2SV_blank>retrans<S2SV_blank>timer<S2SV_blank>%ums\" , ( u_int ) p -> nd_ra_curhoplimit , bittok2str ( icmp6_opt_ra_flag_values , \"none\" , ( p -> nd_ra_flags_reserved ) ) , get_rtpref ( p -> nd_ra_flags_reserved ) , EXTRACT_16BITS ( & p -> nd_ra_router_lifetime ) , EXTRACT_32BITS ( & p -> nd_ra_reachable ) , EXTRACT_32BITS ( & p -> nd_ra_retransmit ) ) ) ; icmp6_opt_print ( ndo , ( const u_char * ) dp + RTADVLEN , length - RTADVLEN ) ; } break ; case ND_NEIGHBOR_SOLICIT : { const struct nd_neighbor_solicit * p ; p = ( const struct nd_neighbor_solicit * ) dp ; ND_TCHECK ( p -> nd_ns_target ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>who<S2SV_blank>has<S2SV_blank>%s\" , ip6addr_string ( ndo , & p -> nd_ns_target ) ) ) ; if ( ndo -> ndo_vflag ) { # define NDSOLLEN 24 icmp6_opt_print ( ndo , ( const u_char * ) dp + NDSOLLEN , length - NDSOLLEN ) ; } } break ; case ND_NEIGHBOR_ADVERT : { const struct nd_neighbor_advert * p ; p = ( const struct nd_neighbor_advert * ) dp ; ND_TCHECK ( p -> nd_na_target ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>tgt<S2SV_blank>is<S2SV_blank>%s\" , ip6addr_string ( ndo , & p -> nd_na_target ) ) ) ; if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( icmp6_nd_na_flag_values , \"none\" , EXTRACT_32BITS ( & p -> nd_na_flags_reserved ) ) ) ) ; # define NDADVLEN 24 icmp6_opt_print ( ndo , ( const u_char * ) dp + NDADVLEN , length - NDADVLEN ) ; # undef NDADVLEN } } break ; case ND_REDIRECT : # define RDR ( i ) ( ( const struct nd_redirect * ) ( i ) ) ND_TCHECK ( RDR ( dp ) -> nd_rd_dst ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ip6addr_string ( ndo , & RDR ( dp ) -> nd_rd_dst ) ) ) ; ND_TCHECK ( RDR ( dp ) -> nd_rd_target ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>to<S2SV_blank>%s\" , ip6addr_string ( ndo , & RDR ( dp ) -> nd_rd_target ) ) ) ; # define REDIRECTLEN 40 if ( ndo -> ndo_vflag ) { icmp6_opt_print ( ndo , ( const u_char * ) dp + REDIRECTLEN , length - REDIRECTLEN ) ; } break ; # undef REDIRECTLEN # undef RDR case ICMP6_ROUTER_RENUMBERING : icmp6_rrenum_print ( ndo , bp , ep ) ; break ; case ICMP6_NI_QUERY : case ICMP6_NI_REPLY : icmp6_nodeinfo_print ( ndo , length , bp , ep ) ; break ; case IND_SOLICIT : case IND_ADVERT : break ; case ICMP6_V2_MEMBERSHIP_REPORT : mldv2_report_print ( ndo , ( const u_char * ) dp , length ) ; break ; case ICMP6_MOBILEPREFIX_SOLICIT : case ICMP6_HADISCOV_REQUEST : ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; break ; case ICMP6_HADISCOV_REPLY : if ( ndo -> ndo_vflag ) { const struct in6_addr * in6 ; const u_char * cp ; ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; cp = ( const u_char * ) dp + length ; in6 = ( const struct in6_addr * ) ( dp + 1 ) ; for ( ; ( const u_char * ) in6 < cp ; in6 ++ ) { ND_TCHECK ( * in6 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>%s\" , ip6addr_string ( ndo , in6 ) ) ) ; } } break ; case ICMP6_MOBILEPREFIX_ADVERT : if ( ndo -> ndo_vflag ) { ND_TCHECK ( dp -> icmp6_data16 [ 0 ] ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>id<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( & dp -> icmp6_data16 [ 0 ] ) ) ) ; ND_TCHECK ( dp -> icmp6_data16 [ 1 ] ) ; if ( dp -> icmp6_data16 [ 1 ] & 0xc0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( dp -> icmp6_data16 [ 1 ] & 0x80 ) ND_PRINT ( ( ndo , \"M\" ) ) ; if ( dp -> icmp6_data16 [ 1 ] & 0x40 ) ND_PRINT ( ( ndo , \"O\" ) ) ; # define MPADVLEN 8 icmp6_opt_print ( ndo , ( const u_char * ) dp + MPADVLEN , length - MPADVLEN ) ; } break ; case ND_RPL_MESSAGE : rpl_print ( ndo , dp , & dp -> icmp6_data8 [ 0 ] , length - sizeof ( struct icmp6_hdr ) + 4 ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , bp , \"\\\\n\\\\t\" , length ) ; return ; } if ( ! ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; trunc : <S2SV_StartBug> ND_PRINT ( ( ndo , \"[|icmp6]\" ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ndo , \"%s\" , icmp6_tstr <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int read_frame ( struct VpxInputContext * input_ctx , vpx_image_t * img ) { <S2SV_EndBug> FILE * f = input_ctx -> file ; y4m_input * y4m = & input_ctx -> y4m ; int shortread = 0 ; if ( input_ctx -> file_type == FILE_TYPE_Y4M ) { if ( y4m_input_fetch_frame ( y4m , f , img ) < 1 ) return 0 ; } else { shortread = read_yuv_frame ( input_ctx , img ) ; } return ! shortread ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 static void ext4_free_io_end ( ext4_io_end_t * io ) { <S2SV_StartBug> BUG_ON ( ! io ) ; <S2SV_EndBug> iput ( io -> inode ) ; kfree ( io ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! io ) ; if ( io -> page ) put_page ( io -> page\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 static int kvm_guest_time_update ( struct kvm_vcpu * v ) { unsigned long flags , this_tsc_khz ; struct kvm_vcpu_arch * vcpu = & v -> arch ; struct kvm_arch * ka = & v -> kvm -> arch ; <S2SV_StartBug> void * shared_kaddr ; <S2SV_EndBug> s64 kernel_ns , max_kernel_ns ; u64 tsc_timestamp , host_tsc ; <S2SV_StartBug> struct pvclock_vcpu_time_info * guest_hv_clock ; <S2SV_EndBug> u8 pvclock_flags ; bool use_master_clock ; kernel_ns = 0 ; host_tsc = 0 ; spin_lock ( & ka -> pvclock_gtod_sync_lock ) ; use_master_clock = ka -> use_master_clock ; if ( use_master_clock ) { host_tsc = ka -> master_cycle_now ; kernel_ns = ka -> master_kernel_ns ; } spin_unlock ( & ka -> pvclock_gtod_sync_lock ) ; local_irq_save ( flags ) ; this_tsc_khz = __get_cpu_var ( cpu_tsc_khz ) ; if ( unlikely ( this_tsc_khz == 0 ) ) { local_irq_restore ( flags ) ; kvm_make_request ( KVM_REQ_CLOCK_UPDATE , v ) ; return 1 ; } if ( ! use_master_clock ) { host_tsc = native_read_tsc ( ) ; kernel_ns = get_kernel_ns ( ) ; } tsc_timestamp = kvm_x86_ops -> read_l1_tsc ( v , host_tsc ) ; if ( vcpu -> tsc_catchup ) { u64 tsc = compute_guest_tsc ( v , kernel_ns ) ; if ( tsc > tsc_timestamp ) { adjust_tsc_offset_guest ( v , tsc - tsc_timestamp ) ; tsc_timestamp = tsc ; } } local_irq_restore ( flags ) ; <S2SV_StartBug> if ( ! vcpu -> time_page ) <S2SV_EndBug> return 0 ; max_kernel_ns = 0 ; if ( vcpu -> hv_clock . tsc_timestamp ) { max_kernel_ns = vcpu -> last_guest_tsc - vcpu -> hv_clock . tsc_timestamp ; max_kernel_ns = pvclock_scale_delta ( max_kernel_ns , vcpu -> hv_clock . tsc_to_system_mul , vcpu -> hv_clock . tsc_shift ) ; max_kernel_ns += vcpu -> last_kernel_ns ; } if ( unlikely ( vcpu -> hw_tsc_khz != this_tsc_khz ) ) { kvm_get_time_scale ( NSEC_PER_SEC / 1000 , this_tsc_khz , & vcpu -> hv_clock . tsc_shift , & vcpu -> hv_clock . tsc_to_system_mul ) ; vcpu -> hw_tsc_khz = this_tsc_khz ; } if ( ! use_master_clock ) { if ( max_kernel_ns > kernel_ns ) kernel_ns = max_kernel_ns ; } vcpu -> hv_clock . tsc_timestamp = tsc_timestamp ; vcpu -> hv_clock . system_time = kernel_ns + v -> kvm -> arch . kvmclock_offset ; vcpu -> last_kernel_ns = kernel_ns ; vcpu -> last_guest_tsc = tsc_timestamp ; vcpu -> hv_clock . version += 2 ; <S2SV_StartBug> shared_kaddr = kmap_atomic ( vcpu -> time_page ) ; <S2SV_EndBug> guest_hv_clock = shared_kaddr + vcpu -> time_offset ; <S2SV_StartBug> pvclock_flags = ( guest_hv_clock -> flags & PVCLOCK_GUEST_STOPPED ) ; <S2SV_EndBug> if ( vcpu -> pvclock_set_guest_stopped_request ) { pvclock_flags |= PVCLOCK_GUEST_STOPPED ; vcpu -> pvclock_set_guest_stopped_request = false ; } if ( use_master_clock ) pvclock_flags |= PVCLOCK_TSC_STABLE_BIT ; vcpu -> hv_clock . flags = pvclock_flags ; <S2SV_StartBug> memcpy ( shared_kaddr + vcpu -> time_offset , & vcpu -> hv_clock , <S2SV_EndBug> sizeof ( vcpu -> hv_clock ) ) ; <S2SV_StartBug> kunmap_atomic ( shared_kaddr ) ; <S2SV_EndBug> mark_page_dirty ( v -> kvm , vcpu -> time >> PAGE_SHIFT ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> arch ; <S2SV_ModEnd> s64 kernel_ns , <S2SV_ModStart> ; struct pvclock_vcpu_time_info <S2SV_ModEnd> guest_hv_clock ; u8 <S2SV_ModStart> ! vcpu -> pv_time_enabled <S2SV_ModEnd> ) return 0 <S2SV_ModStart> += 2 ; if ( unlikely ( kvm_read_guest_cached ( v -> kvm , & vcpu -> pv_time , & guest_hv_clock , sizeof ( guest_hv_clock ) ) ) ) return 0 <S2SV_ModEnd> ; pvclock_flags = <S2SV_ModStart> = ( guest_hv_clock . <S2SV_ModEnd> flags & PVCLOCK_GUEST_STOPPED <S2SV_ModStart> = pvclock_flags ; kvm_write_guest_cached ( v -> kvm , & vcpu -> pv_time , <S2SV_ModEnd> & vcpu -> <S2SV_ModStart> ) ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9304\n\n```\nCWE-674 int yyparse ( void * yyscanner , RE_LEX_ENVIRONMENT * lex_env ) { int yychar ; YY_INITIAL_VALUE ( static YYSTYPE yyval_default ; ) YYSTYPE yylval YY_INITIAL_VALUE ( = yyval_default ) ; int yynerrs ; int yystate ; int yyerrstatus ; yytype_int16 yyssa [ YYINITDEPTH ] ; yytype_int16 * yyss ; yytype_int16 * yyssp ; YYSTYPE yyvsa [ YYINITDEPTH ] ; YYSTYPE * yyvs ; YYSTYPE * yyvsp ; YYSIZE_T yystacksize ; int yyn ; int yyresult ; int yytoken = 0 ; YYSTYPE yyval ; # if YYERROR_VERBOSE char yymsgbuf [ 128 ] ; char * yymsg = yymsgbuf ; YYSIZE_T yymsg_alloc = sizeof yymsgbuf ; # endif # define YYPOPSTACK ( N ) ( yyvsp -= ( N ) , yyssp -= ( N ) ) int yylen = 0 ; yyssp = yyss = yyssa ; yyvsp = yyvs = yyvsa ; yystacksize = YYINITDEPTH ; YYDPRINTF ( ( stderr , \"Starting<S2SV_blank>parse\\\\n\" ) ) ; yystate = 0 ; yyerrstatus = 0 ; yynerrs = 0 ; yychar = YYEMPTY ; goto yysetstate ; yynewstate : yyssp ++ ; yysetstate : * yyssp = yystate ; if ( yyss + yystacksize - 1 <= yyssp ) { YYSIZE_T yysize = yyssp - yyss + 1 ; # ifdef yyoverflow { YYSTYPE * yyvs1 = yyvs ; yytype_int16 * yyss1 = yyss ; yyoverflow ( YY_ ( \"memory<S2SV_blank>exhausted\" ) , & yyss1 , yysize * sizeof ( * yyssp ) , & yyvs1 , yysize * sizeof ( * yyvsp ) , & yystacksize ) ; yyss = yyss1 ; yyvs = yyvs1 ; } # else # ifndef YYSTACK_RELOCATE goto yyexhaustedlab ; # else if ( YYMAXDEPTH <= yystacksize ) goto yyexhaustedlab ; yystacksize *= 2 ; if ( YYMAXDEPTH < yystacksize ) yystacksize = YYMAXDEPTH ; { yytype_int16 * yyss1 = yyss ; union yyalloc * yyptr = ( union yyalloc * ) YYSTACK_ALLOC ( YYSTACK_BYTES ( yystacksize ) ) ; if ( ! yyptr ) goto yyexhaustedlab ; YYSTACK_RELOCATE ( yyss_alloc , yyss ) ; YYSTACK_RELOCATE ( yyvs_alloc , yyvs ) ; # undef YYSTACK_RELOCATE if ( yyss1 != yyssa ) YYSTACK_FREE ( yyss1 ) ; } # endif # endif yyssp = yyss + yysize - 1 ; yyvsp = yyvs + yysize - 1 ; YYDPRINTF ( ( stderr , \"Stack<S2SV_blank>size<S2SV_blank>increased<S2SV_blank>to<S2SV_blank>%lu\\\\n\" , ( unsigned long int ) yystacksize ) ) ; if ( yyss + yystacksize - 1 <= yyssp ) YYABORT ; } YYDPRINTF ( ( stderr , \"Entering<S2SV_blank>state<S2SV_blank>%d\\\\n\" , yystate ) ) ; if ( yystate == YYFINAL ) YYACCEPT ; goto yybackup ; yybackup : yyn = yypact [ yystate ] ; if ( yypact_value_is_default ( yyn ) ) goto yydefault ; if ( yychar == YYEMPTY ) { YYDPRINTF ( ( stderr , \"Reading<S2SV_blank>a<S2SV_blank>token:<S2SV_blank>\" ) ) ; yychar = yylex ( & yylval , yyscanner , lex_env ) ; } if ( yychar <= YYEOF ) { yychar = yytoken = YYEOF ; YYDPRINTF ( ( stderr , \"Now<S2SV_blank>at<S2SV_blank>end<S2SV_blank>of<S2SV_blank>input.\\\\n\" ) ) ; } else { yytoken = YYTRANSLATE ( yychar ) ; YY_SYMBOL_PRINT ( \"Next<S2SV_blank>token<S2SV_blank>is\" , yytoken , & yylval , & yylloc ) ; } yyn += yytoken ; if ( yyn < 0 || YYLAST < yyn || yycheck [ yyn ] != yytoken ) goto yydefault ; yyn = yytable [ yyn ] ; if ( yyn <= 0 ) { if ( yytable_value_is_error ( yyn ) ) goto yyerrlab ; yyn = - yyn ; goto yyreduce ; } if ( yyerrstatus ) yyerrstatus -- ; YY_SYMBOL_PRINT ( \"Shifting\" , yytoken , & yylval , & yylloc ) ; yychar = YYEMPTY ; yystate = yyn ; YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN * ++ yyvsp = yylval ; YY_IGNORE_MAYBE_UNINITIALIZED_END goto yynewstate ; yydefault : yyn = yydefact [ yystate ] ; if ( yyn == 0 ) goto yyerrlab ; goto yyreduce ; yyreduce : yylen = yyr2 [ yyn ] ; yyval = yyvsp [ 1 - yylen ] ; YY_REDUCE_PRINT ( yyn ) ; switch ( yyn ) { case 2 : <S2SV_StartBug> # line 105 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast = yyget_extra ( yyscanner ) ; re_ast -> root_node = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1340 \"re_grammar.c\" <S2SV_EndBug> break ; case 4 : <S2SV_StartBug> # line 114 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1348 \"re_grammar.c\" <S2SV_EndBug> break ; case 5 : <S2SV_StartBug> # line 118 \"re_grammar.y\" <S2SV_EndBug> { mark_as_not_fast_regexp ( ) ; <S2SV_StartBug> ( yyval . re_node ) = yr_re_node_create ( RE_NODE_ALT , ( yyvsp [ - 2 ] . re_node ) , ( yyvsp [ 0 ] . re_node ) ) ; <S2SV_EndBug> DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 2 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ 0 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1363 \"re_grammar.c\" <S2SV_EndBug> break ; case 6 : <S2SV_StartBug> # line 129 \"re_grammar.y\" <S2SV_EndBug> { RE_NODE * node ; mark_as_not_fast_regexp ( ) ; <S2SV_StartBug> node = yr_re_node_create ( RE_NODE_EMPTY , NULL , NULL ) ; <S2SV_EndBug> DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; ERROR_IF ( node == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_ALT , ( yyvsp [ - 1 ] . re_node ) , node ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1382 \"re_grammar.c\" <S2SV_EndBug> break ; case 7 : <S2SV_StartBug> # line 147 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1390 \"re_grammar.c\" <S2SV_EndBug> break ; case 8 : <S2SV_StartBug> # line 151 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_CONCAT , ( yyvsp [ - 1 ] . re_node ) , ( yyvsp [ 0 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ 0 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1402 \"re_grammar.c\" <S2SV_EndBug> break ; case 9 : <S2SV_StartBug> # line 162 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast ; mark_as_not_fast_regexp ( ) ; re_ast = yyget_extra ( yyscanner ) ; re_ast -> flags |= RE_FLAGS_GREEDY ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_STAR , ( yyvsp [ - 1 ] . re_node ) , NULL ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1420 \"re_grammar.c\" <S2SV_EndBug> break ; case 10 : <S2SV_StartBug> # line 176 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast ; mark_as_not_fast_regexp ( ) ; re_ast = yyget_extra ( yyscanner ) ; re_ast -> flags |= RE_FLAGS_UNGREEDY ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_STAR , ( yyvsp [ - 2 ] . re_node ) , NULL ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 2 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> greedy = FALSE ; } <S2SV_StartBug> # line 1440 \"re_grammar.c\" <S2SV_EndBug> break ; case 11 : <S2SV_StartBug> # line 192 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast ; mark_as_not_fast_regexp ( ) ; re_ast = yyget_extra ( yyscanner ) ; re_ast -> flags |= RE_FLAGS_GREEDY ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_PLUS , ( yyvsp [ - 1 ] . re_node ) , NULL ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1458 \"re_grammar.c\" <S2SV_EndBug> break ; case 12 : <S2SV_StartBug> # line 206 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast ; mark_as_not_fast_regexp ( ) ; re_ast = yyget_extra ( yyscanner ) ; re_ast -> flags |= RE_FLAGS_UNGREEDY ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_PLUS , ( yyvsp [ - 2 ] . re_node ) , NULL ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 2 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> greedy = FALSE ; } <S2SV_StartBug> # line 1478 \"re_grammar.c\" <S2SV_EndBug> break ; case 13 : <S2SV_StartBug> # line 222 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast = yyget_extra ( yyscanner ) ; re_ast -> flags |= RE_FLAGS_GREEDY ; if ( ( yyvsp [ - 1 ] . re_node ) -> type == RE_NODE_ANY ) { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE_ANY , NULL , NULL ) ; DESTROY_NODE_IF ( TRUE , ( yyvsp [ - 1 ] . re_node ) ) ; } else { mark_as_not_fast_regexp ( ) ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE , ( yyvsp [ - 1 ] . re_node ) , NULL ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; } DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> start = 0 ; ( yyval . re_node ) -> end = 1 ; } <S2SV_StartBug> # line 1505 \"re_grammar.c\" <S2SV_EndBug> break ; case 14 : <S2SV_StartBug> # line 245 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast = yyget_extra ( yyscanner ) ; re_ast -> flags |= RE_FLAGS_UNGREEDY ; if ( ( yyvsp [ - 2 ] . re_node ) -> type == RE_NODE_ANY ) { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE_ANY , NULL , NULL ) ; DESTROY_NODE_IF ( TRUE , ( yyvsp [ - 2 ] . re_node ) ) ; } else { mark_as_not_fast_regexp ( ) ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE , ( yyvsp [ - 2 ] . re_node ) , NULL ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 2 ] . re_node ) ) ; } DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 2 ] . re_node ) ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> start = 0 ; ( yyval . re_node ) -> end = 1 ; ( yyval . re_node ) -> greedy = FALSE ; } <S2SV_StartBug> # line 1533 \"re_grammar.c\" <S2SV_EndBug> break ; case 15 : <S2SV_StartBug> # line 269 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast = yyget_extra ( yyscanner ) ; re_ast -> flags |= RE_FLAGS_GREEDY ; if ( ( yyvsp [ - 1 ] . re_node ) -> type == RE_NODE_ANY ) { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE_ANY , NULL , NULL ) ; DESTROY_NODE_IF ( TRUE , ( yyvsp [ - 1 ] . re_node ) ) ; } else { mark_as_not_fast_regexp ( ) ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE , ( yyvsp [ - 1 ] . re_node ) , NULL ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 1 ] . re_node ) ) ; } ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> start = ( yyvsp [ 0 ] . range ) & 0xFFFF ; ; ( yyval . re_node ) -> end = ( yyvsp [ 0 ] . range ) >> 16 ; ; } <S2SV_StartBug> # line 1559 \"re_grammar.c\" <S2SV_EndBug> break ; case 16 : <S2SV_StartBug> # line 291 \"re_grammar.y\" <S2SV_EndBug> { RE_AST * re_ast = yyget_extra ( yyscanner ) ; re_ast -> flags |= RE_FLAGS_UNGREEDY ; if ( ( yyvsp [ - 2 ] . re_node ) -> type == RE_NODE_ANY ) { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE_ANY , NULL , NULL ) ; DESTROY_NODE_IF ( TRUE , ( yyvsp [ - 2 ] . re_node ) ) ; } else { mark_as_not_fast_regexp ( ) ; ( yyval . re_node ) = yr_re_node_create ( RE_NODE_RANGE , ( yyvsp [ - 2 ] . re_node ) , NULL ) ; DESTROY_NODE_IF ( ( yyval . re_node ) == NULL , ( yyvsp [ - 2 ] . re_node ) ) ; } ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> start = ( yyvsp [ - 1 ] . range ) & 0xFFFF ; ; ( yyval . re_node ) -> end = ( yyvsp [ - 1 ] . range ) >> 16 ; ; ( yyval . re_node ) -> greedy = FALSE ; } <S2SV_StartBug> # line 1586 \"re_grammar.c\" <S2SV_EndBug> break ; case 17 : <S2SV_StartBug> # line 314 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ 0 ] . re_node ) ; } <S2SV_StartBug> # line 1594 \"re_grammar.c\" <S2SV_EndBug> break ; case 18 : <S2SV_StartBug> # line 318 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_WORD_BOUNDARY , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1604 \"re_grammar.c\" <S2SV_EndBug> break ; case 19 : <S2SV_StartBug> # line 324 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_NON_WORD_BOUNDARY , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1614 \"re_grammar.c\" <S2SV_EndBug> break ; case 20 : <S2SV_StartBug> # line 330 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_ANCHOR_START , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1624 \"re_grammar.c\" <S2SV_EndBug> break ; case 21 : <S2SV_StartBug> # line 336 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_ANCHOR_END , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1634 \"re_grammar.c\" <S2SV_EndBug> break ; case 22 : <S2SV_StartBug> # line 345 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = ( yyvsp [ - 1 ] . re_node ) ; } <S2SV_StartBug> # line 1642 \"re_grammar.c\" <S2SV_EndBug> break ; case 23 : <S2SV_StartBug> # line 349 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_ANY , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1652 \"re_grammar.c\" <S2SV_EndBug> break ; case 24 : <S2SV_StartBug> # line 355 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_LITERAL , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> value = ( yyvsp [ 0 ] . integer ) ; } <S2SV_StartBug> # line 1664 \"re_grammar.c\" <S2SV_EndBug> break ; case 25 : <S2SV_StartBug> # line 363 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_WORD_CHAR , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1674 \"re_grammar.c\" <S2SV_EndBug> break ; case 26 : <S2SV_StartBug> # line 369 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_NON_WORD_CHAR , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1684 \"re_grammar.c\" <S2SV_EndBug> break ; case 27 : <S2SV_StartBug> # line 375 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_SPACE , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1694 \"re_grammar.c\" <S2SV_EndBug> break ; case 28 : <S2SV_StartBug> # line 381 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_NON_SPACE , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1704 \"re_grammar.c\" <S2SV_EndBug> break ; case 29 : <S2SV_StartBug> # line 387 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_DIGIT , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1714 \"re_grammar.c\" <S2SV_EndBug> break ; case 30 : <S2SV_StartBug> # line 393 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_NON_DIGIT , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; } <S2SV_StartBug> # line 1724 \"re_grammar.c\" <S2SV_EndBug> break ; case 31 : <S2SV_StartBug> # line 399 \"re_grammar.y\" <S2SV_EndBug> { ( yyval . re_node ) = yr_re_node_create ( RE_NODE_CLASS , NULL , NULL ) ; ERROR_IF ( ( yyval . re_node ) == NULL , ERROR_INSUFFICIENT_MEMORY ) ; ( yyval . re_node ) -> class_vector = ( yyvsp [ 0 ] . class_vector ) ; } <S2SV_StartBug> # line 1736 \"re_grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> # line 1740 \"re_grammar.c\" <S2SV_EndBug> default : break ; } YY_SYMBOL_PRINT ( \"-><S2SV_blank>$$<S2SV_blank>=\" , yyr1 [ yyn ] , & yyval , & yyloc ) ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; * ++ yyvsp = yyval ; yyn = yyr1 [ yyn ] ; yystate = yypgoto [ yyn - YYNTOKENS ] + * yyssp ; if ( 0 <= yystate && yystate <= YYLAST && yycheck [ yystate ] == * yyssp ) yystate = yytable [ yystate ] ; else yystate = yydefgoto [ yyn - YYNTOKENS ] ; goto yynewstate ; yyerrlab : yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE ( yychar ) ; if ( ! yyerrstatus ) { ++ yynerrs ; # if ! YYERROR_VERBOSE yyerror ( yyscanner , lex_env , YY_ ( \"syntax<S2SV_blank>error\" ) ) ; # else # define YYSYNTAX_ERROR yysyntax_error ( & yymsg_alloc , & yymsg , yyssp , yytoken ) { char const * yymsgp = YY_ ( \"syntax<S2SV_blank>error\" ) ; int yysyntax_error_status ; yysyntax_error_status = YYSYNTAX_ERROR ; if ( yysyntax_error_status == 0 ) yymsgp = yymsg ; else if ( yysyntax_error_status == 1 ) { if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; yymsg = ( char * ) YYSTACK_ALLOC ( yymsg_alloc ) ; if ( ! yymsg ) { yymsg = yymsgbuf ; yymsg_alloc = sizeof yymsgbuf ; yysyntax_error_status = 2 ; } else { yysyntax_error_status = YYSYNTAX_ERROR ; yymsgp = yymsg ; } } yyerror ( yyscanner , lex_env , yymsgp ) ; if ( yysyntax_error_status == 2 ) goto yyexhaustedlab ; } # undef YYSYNTAX_ERROR # endif } if ( yyerrstatus == 3 ) { if ( yychar <= YYEOF ) { if ( yychar == YYEOF ) YYABORT ; } else { yydestruct ( \"Error:<S2SV_blank>discarding\" , yytoken , & yylval , yyscanner , lex_env ) ; yychar = YYEMPTY ; } } goto yyerrlab1 ; yyerrorlab : if ( 0 ) goto yyerrorlab ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; yystate = * yyssp ; goto yyerrlab1 ; yyerrlab1 : yyerrstatus = 3 ; for ( ; ; ) { yyn = yypact [ yystate ] ; if ( ! yypact_value_is_default ( yyn ) ) { yyn += YYTERROR ; if ( 0 <= yyn && yyn <= YYLAST && yycheck [ yyn ] == YYTERROR ) { yyn = yytable [ yyn ] ; if ( 0 < yyn ) break ; } } if ( yyssp == yyss ) YYABORT ; yydestruct ( \"Error:<S2SV_blank>popping\" , yystos [ yystate ] , yyvsp , yyscanner , lex_env ) ; YYPOPSTACK ( 1 ) ; yystate = * yyssp ; YY_STACK_PRINT ( yyss , yyssp ) ; } YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN * ++ yyvsp = yylval ; YY_IGNORE_MAYBE_UNINITIALIZED_END YY_SYMBOL_PRINT ( \"Shifting\" , yystos [ yyn ] , yyvsp , yylsp ) ; yystate = yyn ; goto yynewstate ; yyacceptlab : yyresult = 0 ; goto yyreturn ; yyabortlab : yyresult = 1 ; goto yyreturn ; # if ! defined yyoverflow || YYERROR_VERBOSE yyexhaustedlab : yyerror ( yyscanner , lex_env , YY_ ( \"memory<S2SV_blank>exhausted\" ) ) ; yyresult = 2 ; # endif yyreturn : if ( yychar != YYEMPTY ) { yytoken = YYTRANSLATE ( yychar ) ; yydestruct ( \"Cleanup:<S2SV_blank>discarding<S2SV_blank>lookahead\" , yytoken , & yylval , yyscanner , lex_env ) ; } YYPOPSTACK ( yylen ) ; YY_STACK_PRINT ( yyss , yyssp ) ; while ( yyssp != yyss ) { yydestruct ( \"Cleanup:<S2SV_blank>popping\" , yystos [ * yyssp ] , yyvsp , yyscanner , lex_env ) ; YYPOPSTACK ( 1 ) ; } # ifndef yyoverflow if ( yyss != yyssa ) YYSTACK_FREE ( yyss ) ; # endif # if YYERROR_VERBOSE if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; # endif return yyresult ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : # line 113 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1348 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 122 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1356 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 126 <S2SV_ModEnd> \"re_grammar.y\" { mark_as_not_fast_regexp <S2SV_ModStart> ( ) ; incr_ast_levels ( ) ; <S2SV_ModStart> } # line 1372 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 138 <S2SV_ModEnd> \"re_grammar.y\" { RE_NODE <S2SV_ModStart> ( ) ; incr_ast_levels ( ) ; <S2SV_ModStart> } # line 1392 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 157 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1400 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 161 \"re_grammar.y\" { incr_ast_levels ( ) ; <S2SV_ModEnd> ( yyval . <S2SV_ModStart> } # line 1414 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 174 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1432 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 188 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1452 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 204 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1470 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 218 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1490 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 234 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1517 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 257 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1545 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 281 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1571 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 303 <S2SV_ModEnd> \"re_grammar.y\" { RE_AST <S2SV_ModStart> } # line 1598 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 326 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1606 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 330 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1616 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 336 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1626 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 342 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1636 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 348 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1646 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 357 \"re_grammar.y\" { incr_ast_levels ( ) ; <S2SV_ModEnd> ( yyval . <S2SV_ModStart> } # line 1656 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 363 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1666 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 369 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1678 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 377 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1688 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 383 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1698 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 389 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1708 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 395 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1718 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 401 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1728 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 407 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1738 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> : # line 413 <S2SV_ModEnd> \"re_grammar.y\" { ( <S2SV_ModStart> } # line 1750 <S2SV_ModEnd> \"re_grammar.c\" break ; <S2SV_ModStart> ; # line 1754 <S2SV_ModEnd> \"re_grammar.c\" default :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5696\n\n```\nCWE-200 static void tcp_send_challenge_ack ( struct sock * sk , const struct sk_buff * skb ) { static u32 challenge_timestamp ; static unsigned int challenge_count ; struct tcp_sock * tp = tcp_sk ( sk ) ; <S2SV_StartBug> u32 now ; <S2SV_EndBug> if ( tcp_oow_rate_limited ( sock_net ( sk ) , skb , LINUX_MIB_TCPACKSKIPPEDCHALLENGE , & tp -> last_oow_ack_time ) ) return ; now = jiffies / HZ ; if ( now != challenge_timestamp ) { <S2SV_StartBug> challenge_timestamp = now ; <S2SV_EndBug> <S2SV_StartBug> challenge_count = 0 ; <S2SV_EndBug> } if ( ++ challenge_count <= sysctl_tcp_challenge_ack_limit ) { NET_INC_STATS ( sock_net ( sk ) , LINUX_MIB_TCPCHALLENGEACK ) ; tcp_send_ack ( sk ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; u32 count , <S2SV_ModStart> challenge_timestamp ) { u32 half = ( sysctl_tcp_challenge_ack_limit + 1 ) >> 1 ; <S2SV_ModStart> = now ; WRITE_ONCE ( challenge_count , half + prandom_u32_max ( sysctl_tcp_challenge_ack_limit ) ) ; } count = READ_ONCE ( challenge_count ) ; if ( count > 0 ) { WRITE_ONCE ( challenge_count , count - 1 ) ; <S2SV_ModEnd> NET_INC_STATS ( sock_net\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15116\n\n```\nCWE-476 int crypto_rng_reset ( struct crypto_rng * tfm , const u8 * seed , unsigned int slen ) { u8 * buf = NULL ; int err ; if ( ! seed && slen ) { buf = kmalloc ( slen , GFP_KERNEL ) ; if ( ! buf ) return - ENOMEM ; get_random_bytes ( buf , slen ) ; seed = buf ; } <S2SV_StartBug> err = tfm -> seed ( tfm , seed , slen ) ; <S2SV_EndBug> kfree ( buf ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } err = crypto_rng_alg ( tfm ) <S2SV_ModEnd> -> seed (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8104\n\n```\nCWE-399 static int db_interception ( struct vcpu_svm * svm ) { struct kvm_run * kvm_run = svm -> vcpu . run ; if ( ! ( svm -> vcpu . guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) && ! svm -> nmi_singlestep ) { kvm_queue_exception ( & svm -> vcpu , DB_VECTOR ) ; return 1 ; } if ( svm -> nmi_singlestep ) { svm -> nmi_singlestep = false ; if ( ! ( svm -> vcpu . guest_debug & KVM_GUESTDBG_SINGLESTEP ) ) svm -> vmcb -> save . rflags &= ~ ( X86_EFLAGS_TF | X86_EFLAGS_RF ) ; <S2SV_StartBug> update_db_bp_intercept ( & svm -> vcpu ) ; <S2SV_EndBug> } if ( svm -> vcpu . guest_debug & ( KVM_GUESTDBG_SINGLESTEP | KVM_GUESTDBG_USE_HW_BP ) ) { kvm_run -> exit_reason = KVM_EXIT_DEBUG ; kvm_run -> debug . arch . pc = svm -> vmcb -> save . cs . base + svm -> vmcb -> save . rip ; kvm_run -> debug . arch . exception = DB_VECTOR ; return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> X86_EFLAGS_RF ) ; <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19082\n\n```\nCWE-401 struct resource_pool * dce120_create_resource_pool ( uint8_t num_virtual_links , struct dc * dc ) { struct dce110_resource_pool * pool = kzalloc ( sizeof ( struct dce110_resource_pool ) , GFP_KERNEL ) ; if ( ! pool ) return NULL ; if ( construct ( num_virtual_links , dc , pool ) ) return & pool -> base ; <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> base ; kfree ( pool ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 static void __skb_complete_tx_timestamp ( struct sk_buff * skb , struct sock * sk , <S2SV_StartBug> int tstype ) <S2SV_EndBug> { struct sock_exterr_skb * serr ; <S2SV_StartBug> int err ; <S2SV_EndBug> serr = SKB_EXT_ERR ( skb ) ; memset ( serr , 0 , sizeof ( * serr ) ) ; serr -> ee . ee_errno = ENOMSG ; serr -> ee . ee_origin = SO_EE_ORIGIN_TIMESTAMPING ; <S2SV_StartBug> serr -> ee . ee_info = tstype ; <S2SV_EndBug> if ( sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_ID ) { serr -> ee . ee_data = skb_shinfo ( skb ) -> tskey ; if ( sk -> sk_protocol == IPPROTO_TCP && sk -> sk_type == SOCK_STREAM ) serr -> ee . ee_data -= sk -> sk_tskey ; } err = sock_queue_err_skb ( sk , skb ) ; if ( err ) kfree_skb ( skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int tstype , bool opt_stats <S2SV_ModStart> ; int err ; BUILD_BUG_ON ( sizeof ( struct sock_exterr_skb ) > sizeof ( skb -> cb ) ) <S2SV_ModStart> ee_info = tstype ; serr -> opt_stats = opt_stats\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0749\n\n```\nCWE-119 int disrsi_ ( int stream , int * negate , unsigned * value , unsigned count ) { int c ; unsigned locval ; unsigned ndigs ; char * cp ; char scratch [ DIS_BUFSIZ + 1 ] ; assert ( negate != NULL ) ; assert ( value != NULL ) ; assert ( count ) ; assert ( stream >= 0 ) ; assert ( dis_getc != NULL ) ; assert ( dis_gets != NULL ) ; memset ( scratch , 0 , DIS_BUFSIZ + 1 ) ; if ( dis_umaxd == 0 ) disiui_ ( ) ; <S2SV_StartBug> switch ( c = ( * dis_getc ) ( stream ) ) <S2SV_EndBug> { case '-' : case '+' : * negate = c == '-' ; if ( ( * dis_gets ) ( stream , scratch , count ) != ( int ) count ) { return ( DIS_EOD ) ; } if ( count >= dis_umaxd ) { if ( count > dis_umaxd ) goto overflow ; if ( memcmp ( scratch , dis_umax , dis_umaxd ) > 0 ) goto overflow ; } cp = scratch ; locval = 0 ; do { if ( ( ( c = * cp ++ ) < '0' ) || ( c > '9' ) ) { return ( DIS_NONDIGIT ) ; } locval = 10 * locval + c - '0' ; } while ( -- count ) ; * value = locval ; return ( DIS_SUCCESS ) ; break ; case '0' : return ( DIS_LEADZRO ) ; break ; case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : ndigs = c - '0' ; if ( count > 1 ) { if ( ( * dis_gets ) ( stream , scratch + 1 , count - 1 ) != ( int ) count - 1 ) { return ( DIS_EOD ) ; } cp = scratch ; if ( count >= dis_umaxd ) { if ( count > dis_umaxd ) break ; * cp = c ; if ( memcmp ( scratch , dis_umax , dis_umaxd ) > 0 ) break ; } while ( -- count ) { if ( ( ( c = * ++ cp ) < '0' ) || ( c > '9' ) ) { return ( DIS_NONDIGIT ) ; } ndigs = 10 * ndigs + c - '0' ; } } return ( disrsi_ ( stream , negate , value , ndigs ) ) ; break ; case - 1 : return ( DIS_EOD ) ; break ; case - 2 : return ( DIS_EOF ) ; break ; default : return ( DIS_NONDIGIT ) ; break ; } * negate = FALSE ; overflow : * value = UINT_MAX ; return ( DIS_OVERFLOW ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; if ( count >= dis_umaxd ) { if ( count > dis_umaxd ) goto overflow ; if ( memcmp ( scratch , dis_umax , dis_umaxd ) > 0 ) goto overflow ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4532\n\n```\nCWE-119 static void stellaris_enet_class_init ( ObjectClass * klass , void * data ) { DeviceClass * dc = DEVICE_CLASS ( klass ) ; SysBusDeviceClass * k = SYS_BUS_DEVICE_CLASS ( klass ) ; k -> init = stellaris_enet_init ; dc -> unrealize = stellaris_enet_unrealize ; dc -> props = stellaris_enet_properties ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = stellaris_enet_properties ; dc -> vmsd = & vmstate_stellaris_enet ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_first_pass ( VP9_COMP * cpi ) { <S2SV_EndBug> int mb_row , mb_col ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & x -> e_mbd ; TileInfo tile ; struct macroblock_plane * const p = x -> plane ; struct macroblockd_plane * const pd = xd -> plane ; <S2SV_StartBug> const PICK_MODE_CONTEXT * ctx = & x -> sb64_context ; <S2SV_EndBug> int i ; int recon_yoffset , recon_uvoffset ; <S2SV_StartBug> YV12_BUFFER_CONFIG * const lst_yv12 = get_ref_frame_buffer ( cpi , LAST_FRAME ) ; <S2SV_EndBug> YV12_BUFFER_CONFIG * gld_yv12 = get_ref_frame_buffer ( cpi , GOLDEN_FRAME ) ; YV12_BUFFER_CONFIG * const new_yv12 = get_frame_new_buffer ( cm ) ; int recon_y_stride = lst_yv12 -> y_stride ; int recon_uv_stride = lst_yv12 -> uv_stride ; int uv_mb_height = 16 >> ( lst_yv12 -> y_height > lst_yv12 -> uv_height ) ; int64_t intra_error = 0 ; int64_t coded_error = 0 ; int64_t sr_coded_error = 0 ; int sum_mvr = 0 , sum_mvc = 0 ; int sum_mvr_abs = 0 , sum_mvc_abs = 0 ; int64_t sum_mvrs = 0 , sum_mvcs = 0 ; int mvcount = 0 ; int intercount = 0 ; int second_ref_count = 0 ; <S2SV_StartBug> int intrapenalty = 256 ; <S2SV_EndBug> int neutral_count = 0 ; int new_mv_count = 0 ; int sum_in_vectors = 0 ; <S2SV_StartBug> uint32_t lastmv_as_int = 0 ; <S2SV_EndBug> struct twopass_rc * twopass = & cpi -> twopass ; const MV zero_mv = { 0 , 0 } ; <S2SV_StartBug> const YV12_BUFFER_CONFIG * first_ref_buf = lst_yv12 ; <S2SV_EndBug> <S2SV_StartBug> vp9_clear_system_state ( ) ; <S2SV_EndBug> <S2SV_StartBug> if ( cpi -> use_svc && cpi -> svc . number_temporal_layers == 1 ) { <S2SV_EndBug> MV_REFERENCE_FRAME ref_frame = LAST_FRAME ; const YV12_BUFFER_CONFIG * scaled_ref_buf = NULL ; twopass = & cpi -> svc . layer_context [ cpi -> svc . spatial_layer_id ] . twopass ; vp9_scale_references ( cpi ) ; if ( cpi -> ref_frame_flags & VP9_LAST_FLAG ) { scaled_ref_buf = vp9_get_scaled_ref_frame ( cpi , LAST_FRAME ) ; ref_frame = LAST_FRAME ; } else if ( cpi -> ref_frame_flags & VP9_ALT_FLAG ) { scaled_ref_buf = vp9_get_scaled_ref_frame ( cpi , ALTREF_FRAME ) ; ref_frame = ALTREF_FRAME ; } <S2SV_StartBug> if ( scaled_ref_buf != NULL ) { <S2SV_EndBug> <S2SV_StartBug> first_ref_buf = scaled_ref_buf ; <S2SV_EndBug> recon_y_stride = first_ref_buf -> y_stride ; recon_uv_stride = first_ref_buf -> uv_stride ; uv_mb_height = 16 >> ( first_ref_buf -> y_height > first_ref_buf -> uv_height ) ; } gld_yv12 = NULL ; set_ref_ptrs ( cm , xd , ref_frame , NONE ) ; } vp9_setup_src_planes ( x , cpi -> Source , 0 , 0 ) ; vp9_setup_pre_planes ( xd , 0 , first_ref_buf , 0 , 0 , NULL ) ; vp9_setup_dst_planes ( xd , new_yv12 , 0 , 0 ) ; xd -> mi = cm -> mi_grid_visible ; xd -> mi [ 0 ] = cm -> mi ; vp9_setup_block_planes ( & x -> e_mbd , cm -> subsampling_x , cm -> subsampling_y ) ; vp9_frame_init_quantizer ( cpi ) ; for ( i = 0 ; i < MAX_MB_PLANE ; ++ i ) { p [ i ] . coeff = ctx -> coeff_pbuf [ i ] [ 1 ] ; p [ i ] . qcoeff = ctx -> qcoeff_pbuf [ i ] [ 1 ] ; pd [ i ] . dqcoeff = ctx -> dqcoeff_pbuf [ i ] [ 1 ] ; p [ i ] . eobs = ctx -> eobs_pbuf [ i ] [ 1 ] ; } x -> skip_recode = 0 ; vp9_init_mv_probs ( cm ) ; vp9_initialize_rd_consts ( cpi ) ; vp9_tile_init ( & tile , cm , 0 , 0 ) ; <S2SV_StartBug> for ( mb_row = 0 ; mb_row < cm -> mb_rows ; ++ mb_row ) { <S2SV_EndBug> <S2SV_StartBug> int_mv best_ref_mv ; <S2SV_EndBug> best_ref_mv . as_int = 0 ; xd -> up_available = ( mb_row != 0 ) ; recon_yoffset = ( mb_row * recon_y_stride * 16 ) ; recon_uvoffset = ( mb_row * recon_uv_stride * uv_mb_height ) ; x -> mv_row_min = - ( ( mb_row * 16 ) + BORDER_MV_PIXELS_B16 ) ; x -> mv_row_max = ( ( cm -> mb_rows - 1 - mb_row ) * 16 ) + BORDER_MV_PIXELS_B16 ; for ( mb_col = 0 ; mb_col < cm -> mb_cols ; ++ mb_col ) { int this_error ; const int use_dc_pred = ( mb_col || mb_row ) && ( ! mb_col || ! mb_row ) ; <S2SV_StartBug> double error_weight = 1.0 ; <S2SV_EndBug> const BLOCK_SIZE bsize = get_bsize ( cm , mb_row , mb_col ) ; <S2SV_StartBug> vp9_clear_system_state ( ) ; <S2SV_EndBug> xd -> plane [ 0 ] . dst . buf = new_yv12 -> y_buffer + recon_yoffset ; xd -> plane [ 1 ] . dst . buf = new_yv12 -> u_buffer + recon_uvoffset ; xd -> plane [ 2 ] . dst . buf = new_yv12 -> v_buffer + recon_uvoffset ; xd -> left_available = ( mb_col != 0 ) ; xd -> mi [ 0 ] -> mbmi . sb_type = bsize ; xd -> mi [ 0 ] -> mbmi . ref_frame [ 0 ] = INTRA_FRAME ; set_mi_row_col ( xd , & tile , mb_row << 1 , num_8x8_blocks_high_lookup [ bsize ] , mb_col << 1 , num_8x8_blocks_wide_lookup [ bsize ] , cm -> mi_rows , cm -> mi_cols ) ; <S2SV_StartBug> if ( cpi -> oxcf . aq_mode == VARIANCE_AQ ) { <S2SV_EndBug> const int energy = vp9_block_energy ( cpi , x , bsize ) ; error_weight = vp9_vaq_inv_q_ratio ( energy ) ; } this_error = vp9_encode_intra ( x , use_dc_pred ) ; if ( cpi -> oxcf . aq_mode == VARIANCE_AQ ) { vp9_clear_system_state ( ) ; this_error = ( int ) ( this_error * error_weight ) ; } this_error += intrapenalty ; <S2SV_StartBug> intra_error += ( int64_t ) this_error ; <S2SV_EndBug> x -> mv_col_min = - ( ( mb_col * 16 ) + BORDER_MV_PIXELS_B16 ) ; x -> mv_col_max = ( ( cm -> mb_cols - 1 - mb_col ) * 16 ) + BORDER_MV_PIXELS_B16 ; <S2SV_StartBug> if ( cm -> current_video_frame > 0 ) { <S2SV_EndBug> <S2SV_StartBug> int tmp_err , motion_error ; <S2SV_EndBug> int_mv mv , tmp_mv ; xd -> plane [ 0 ] . pre [ 0 ] . buf = first_ref_buf -> y_buffer + recon_yoffset ; <S2SV_StartBug> motion_error = zz_motion_search ( x ) ; <S2SV_EndBug> mv . as_int = tmp_mv . as_int = 0 ; first_pass_motion_search ( cpi , x , & best_ref_mv . as_mv , & mv . as_mv , & motion_error ) ; if ( cpi -> oxcf . aq_mode == VARIANCE_AQ ) { vp9_clear_system_state ( ) ; motion_error = ( int ) ( motion_error * error_weight ) ; } if ( best_ref_mv . as_int ) { tmp_err = INT_MAX ; first_pass_motion_search ( cpi , x , & zero_mv , & tmp_mv . as_mv , & tmp_err ) ; if ( cpi -> oxcf . aq_mode == VARIANCE_AQ ) { vp9_clear_system_state ( ) ; tmp_err = ( int ) ( tmp_err * error_weight ) ; } if ( tmp_err < motion_error ) { motion_error = tmp_err ; <S2SV_StartBug> mv . as_int = tmp_mv . as_int ; <S2SV_EndBug> } } <S2SV_StartBug> if ( cm -> current_video_frame > 1 && gld_yv12 != NULL ) { <S2SV_EndBug> int gf_motion_error ; xd -> plane [ 0 ] . pre [ 0 ] . buf = gld_yv12 -> y_buffer + recon_yoffset ; <S2SV_StartBug> gf_motion_error = zz_motion_search ( x ) ; <S2SV_EndBug> <S2SV_StartBug> first_pass_motion_search ( cpi , x , & zero_mv , & tmp_mv . as_mv , <S2SV_EndBug> & gf_motion_error ) ; <S2SV_StartBug> if ( cpi -> oxcf . aq_mode == VARIANCE_AQ ) { <S2SV_EndBug> vp9_clear_system_state ( ) ; gf_motion_error = ( int ) ( gf_motion_error * error_weight ) ; } if ( gf_motion_error < motion_error && gf_motion_error < this_error ) ++ second_ref_count ; xd -> plane [ 0 ] . pre [ 0 ] . buf = first_ref_buf -> y_buffer + recon_yoffset ; xd -> plane [ 1 ] . pre [ 0 ] . buf = first_ref_buf -> u_buffer + recon_uvoffset ; xd -> plane [ 2 ] . pre [ 0 ] . buf = first_ref_buf -> v_buffer + recon_uvoffset ; if ( gf_motion_error < this_error ) sr_coded_error += gf_motion_error ; else sr_coded_error += this_error ; } else { sr_coded_error += motion_error ; } <S2SV_StartBug> best_ref_mv . as_int = 0 ; <S2SV_EndBug> if ( motion_error <= this_error ) { <S2SV_StartBug> if ( ( ( this_error - intrapenalty ) * 9 <= motion_error * 10 ) && <S2SV_EndBug> <S2SV_StartBug> this_error < 2 * intrapenalty ) <S2SV_EndBug> <S2SV_StartBug> ++ neutral_count ; <S2SV_EndBug> mv . as_mv . row *= 8 ; <S2SV_StartBug> mv . as_mv . col *= 8 ; <S2SV_EndBug> this_error = motion_error ; xd -> mi [ 0 ] -> mbmi . mode = NEWMV ; <S2SV_StartBug> xd -> mi [ 0 ] -> mbmi . mv [ 0 ] = mv ; <S2SV_EndBug> xd -> mi [ 0 ] -> mbmi . tx_size = TX_4X4 ; xd -> mi [ 0 ] -> mbmi . ref_frame [ 0 ] = LAST_FRAME ; xd -> mi [ 0 ] -> mbmi . ref_frame [ 1 ] = NONE ; vp9_build_inter_predictors_sby ( xd , mb_row << 1 , mb_col << 1 , bsize ) ; vp9_encode_sby_pass1 ( x , bsize ) ; <S2SV_StartBug> sum_mvr += mv . as_mv . row ; <S2SV_EndBug> <S2SV_StartBug> sum_mvr_abs += abs ( mv . as_mv . row ) ; <S2SV_EndBug> <S2SV_StartBug> sum_mvc += mv . as_mv . col ; <S2SV_EndBug> <S2SV_StartBug> sum_mvc_abs += abs ( mv . as_mv . col ) ; <S2SV_EndBug> <S2SV_StartBug> sum_mvrs += mv . as_mv . row * mv . as_mv . row ; <S2SV_EndBug> <S2SV_StartBug> sum_mvcs += mv . as_mv . col * mv . as_mv . col ; <S2SV_EndBug> ++ intercount ; <S2SV_StartBug> best_ref_mv . as_int = mv . as_int ; <S2SV_EndBug> if ( mv . as_int ) { ++ mvcount ; <S2SV_StartBug> if ( mv . as_int != lastmv_as_int ) <S2SV_EndBug> ++ new_mv_count ; <S2SV_StartBug> lastmv_as_int = mv . as_int ; <S2SV_EndBug> if ( mb_row < cm -> mb_rows / 2 ) { <S2SV_StartBug> if ( mv . as_mv . row > 0 ) <S2SV_EndBug> -- sum_in_vectors ; <S2SV_StartBug> else if ( mv . as_mv . row < 0 ) <S2SV_EndBug> ++ sum_in_vectors ; } else if ( mb_row > cm -> mb_rows / 2 ) { <S2SV_StartBug> if ( mv . as_mv . row > 0 ) <S2SV_EndBug> ++ sum_in_vectors ; <S2SV_StartBug> else if ( mv . as_mv . row < 0 ) <S2SV_EndBug> -- sum_in_vectors ; } if ( mb_col < cm -> mb_cols / 2 ) { <S2SV_StartBug> if ( mv . as_mv . col > 0 ) <S2SV_EndBug> -- sum_in_vectors ; <S2SV_StartBug> else if ( mv . as_mv . col < 0 ) <S2SV_EndBug> ++ sum_in_vectors ; } else if ( mb_col > cm -> mb_cols / 2 ) { <S2SV_StartBug> if ( mv . as_mv . col > 0 ) <S2SV_EndBug> ++ sum_in_vectors ; <S2SV_StartBug> else if ( mv . as_mv . col < 0 ) <S2SV_EndBug> -- sum_in_vectors ; } } } } else { sr_coded_error += ( int64_t ) this_error ; } coded_error += ( int64_t ) this_error ; x -> plane [ 0 ] . src . buf += 16 ; x -> plane [ 1 ] . src . buf += uv_mb_height ; x -> plane [ 2 ] . src . buf += uv_mb_height ; recon_yoffset += 16 ; recon_uvoffset += uv_mb_height ; } x -> plane [ 0 ] . src . buf += 16 * x -> plane [ 0 ] . src . stride - 16 * cm -> mb_cols ; x -> plane [ 1 ] . src . buf += uv_mb_height * x -> plane [ 1 ] . src . stride - uv_mb_height * cm -> mb_cols ; x -> plane [ 2 ] . src . buf += uv_mb_height * x -> plane [ 1 ] . src . stride - uv_mb_height * cm -> mb_cols ; <S2SV_StartBug> vp9_clear_system_state ( ) ; <S2SV_EndBug> } vp9_clear_system_state ( ) ; { FIRSTPASS_STATS fps ; <S2SV_StartBug> fps . frame = cm -> current_video_frame ; <S2SV_EndBug> <S2SV_StartBug> fps . spatial_layer_id = cpi -> svc . spatial_layer_id ; <S2SV_EndBug> <S2SV_StartBug> fps . intra_error = ( double ) ( intra_error >> 8 ) ; <S2SV_EndBug> fps . coded_error = ( double ) ( coded_error >> 8 ) ; fps . sr_coded_error = ( double ) ( sr_coded_error >> 8 ) ; fps . ssim_weighted_pred_err = fps . coded_error * simple_weight ( cpi -> Source ) ; fps . count = 1.0 ; <S2SV_StartBug> fps . pcnt_inter = ( double ) intercount / cm -> MBs ; <S2SV_EndBug> <S2SV_StartBug> fps . pcnt_second_ref = ( double ) second_ref_count / cm -> MBs ; <S2SV_EndBug> <S2SV_StartBug> fps . pcnt_neutral = ( double ) neutral_count / cm -> MBs ; <S2SV_EndBug> if ( mvcount > 0 ) { fps . MVr = ( double ) sum_mvr / mvcount ; fps . mvr_abs = ( double ) sum_mvr_abs / mvcount ; fps . MVc = ( double ) sum_mvc / mvcount ; fps . mvc_abs = ( double ) sum_mvc_abs / mvcount ; <S2SV_StartBug> fps . MVrv = ( ( double ) sum_mvrs - ( fps . MVr * fps . MVr / mvcount ) ) / mvcount ; <S2SV_EndBug> <S2SV_StartBug> fps . MVcv = ( ( double ) sum_mvcs - ( fps . MVc * fps . MVc / mvcount ) ) / mvcount ; <S2SV_EndBug> fps . mv_in_out_count = ( double ) sum_in_vectors / ( mvcount * 2 ) ; fps . new_mv_count = new_mv_count ; <S2SV_StartBug> fps . pcnt_motion = ( double ) mvcount / cm -> MBs ; <S2SV_EndBug> } else { fps . MVr = 0.0 ; fps . mvr_abs = 0.0 ; fps . MVc = 0.0 ; fps . mvc_abs = 0.0 ; fps . MVrv = 0.0 ; fps . MVcv = 0.0 ; fps . mv_in_out_count = 0.0 ; fps . new_mv_count = 0.0 ; fps . pcnt_motion = 0.0 ; } <S2SV_StartBug> fps . duration = ( double ) ( cpi -> source -> ts_end - cpi -> source -> ts_start ) ; <S2SV_EndBug> twopass -> this_frame_stats = fps ; output_stats ( & twopass -> this_frame_stats , cpi -> output_pkt_list ) ; <S2SV_StartBug> accumulate_stats ( & twopass -> total_stats , & fps ) ; <S2SV_EndBug> } if ( ( twopass -> sr_update_lag > 3 ) || ( ( cm -> current_video_frame > 0 ) && ( twopass -> this_frame_stats . pcnt_inter > 0.20 ) && ( ( twopass -> this_frame_stats . intra_error / DOUBLE_DIVIDE_CHECK ( twopass -> this_frame_stats . coded_error ) ) > 2.0 ) ) ) { if ( gld_yv12 != NULL ) { <S2SV_StartBug> vp8_yv12_copy_frame ( lst_yv12 , gld_yv12 ) ; <S2SV_EndBug> } twopass -> sr_update_lag = 1 ; } else { ++ twopass -> sr_update_lag ; } <S2SV_StartBug> if ( cpi -> use_svc && cpi -> svc . number_temporal_layers == 1 ) { <S2SV_EndBug> vp9_update_reference_frames ( cpi ) ; } else { <S2SV_StartBug> swap_yv12 ( lst_yv12 , new_yv12 ) ; <S2SV_EndBug> } vp9_extend_frame_borders ( lst_yv12 ) ; <S2SV_StartBug> if ( cm -> current_video_frame == 0 && gld_yv12 != NULL ) { <S2SV_EndBug> <S2SV_StartBug> vp8_yv12_copy_frame ( lst_yv12 , gld_yv12 ) ; <S2SV_EndBug> } if ( 0 ) { char filename [ 512 ] ; FILE * recon_file ; snprintf ( filename , sizeof ( filename ) , \"enc%04d.yuv\" , ( int ) cm -> current_video_frame ) ; if ( cm -> current_video_frame == 0 ) recon_file = fopen ( filename , \"wb\" ) ; else recon_file = fopen ( filename , \"ab\" ) ; ( void ) fwrite ( lst_yv12 -> buffer_alloc , lst_yv12 -> frame_size , 1 , recon_file ) ; fclose ( recon_file ) ; } ++ cm -> current_video_frame ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VP9_COMP * cpi , const struct lookahead_entry * source <S2SV_ModStart> & cpi -> td . <S2SV_ModStart> ctx = & cpi -> td . pc_root -> none <S2SV_ModEnd> ; int i <S2SV_ModStart> , recon_uvoffset ; <S2SV_ModEnd> int64_t intra_error = <S2SV_ModStart> = 0 ; const <S2SV_ModStart> int intrapenalty = INTRA_MODE_PENALTY ; double neutral_count ; int intra_skip_count = 0 ; int image_data_start_row = INVALID_ROW <S2SV_ModEnd> ; int new_mv_count <S2SV_ModStart> = 0 ; MV lastmv = { 0 , 0 } ; TWO_PASS <S2SV_ModEnd> * twopass = <S2SV_ModStart> 0 } ; int recon_y_stride , recon_uv_stride , uv_mb_height ; YV12_BUFFER_CONFIG * const lst_yv12 = get_ref_frame_buffer ( cpi , LAST_FRAME ) ; YV12_BUFFER_CONFIG * gld_yv12 = get_ref_frame_buffer ( cpi , GOLDEN_FRAME ) ; YV12_BUFFER_CONFIG * const new_yv12 = get_frame_new_buffer ( cm ) ; <S2SV_ModStart> = lst_yv12 ; LAYER_CONTEXT * const lc = is_two_pass_svc ( cpi ) ? & <S2SV_ModEnd> cpi -> svc <S2SV_ModStart> -> svc . layer_context [ cpi -> svc . spatial_layer_id ] : NULL ; double intra_factor ; double brightness_factor ; BufferPool * const pool = cm -> buffer_pool ; assert ( new_yv12 <S2SV_ModEnd> != NULL ) <S2SV_ModStart> != NULL ) ; assert ( ( lc != NULL ) || frame_is_intra_only ( cm ) || ( lst_yv12 != NULL ) ) ; # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats ) { vp9_zero_array ( cpi -> twopass . frame_mb_stats_buf , cm -> initial_mbs ) ; } # endif vpx_clear_system_state ( ) ; intra_factor = 0.0 ; brightness_factor = 0.0 ; neutral_count = 0.0 ; set_first_pass_params ( cpi ) ; vp9_set_quantizer ( cm , find_fp_qindex ( cm -> bit_depth ) ) ; if ( lc != NULL ) { twopass = & lc -> twopass ; cpi -> lst_fb_idx = cpi -> svc . spatial_layer_id ; cpi -> ref_frame_flags = VP9_LAST_FLAG ; if ( cpi -> svc . number_spatial_layers + cpi -> svc . spatial_layer_id < REF_FRAMES ) { cpi -> gld_fb_idx = cpi -> svc . number_spatial_layers + cpi -> svc . spatial_layer_id ; cpi -> ref_frame_flags |= VP9_GOLD_FLAG ; cpi -> refresh_golden_frame = ( lc -> current_video_frame_in_layer == 0 ) ; } else { cpi -> refresh_golden_frame = 0 ; } if ( lc -> current_video_frame_in_layer == 0 ) cpi -> ref_frame_flags = 0 ; vp9_scale_references ( cpi ) ; if ( cpi -> ref_frame_flags & VP9_LAST_FLAG ) <S2SV_ModStart> { first_ref_buf = vp9_get_scaled_ref_frame ( cpi , LAST_FRAME ) ; if ( first_ref_buf == NULL ) first_ref_buf = get_ref_frame_buffer ( cpi , LAST_FRAME ) ; } if ( cpi -> ref_frame_flags & VP9_GOLD_FLAG ) { gld_yv12 = vp9_get_scaled_ref_frame ( cpi , GOLDEN_FRAME ) ; if ( gld_yv12 == NULL ) { gld_yv12 = get_ref_frame_buffer ( cpi , GOLDEN_FRAME ) ; } } else { gld_yv12 = NULL ; } set_ref_ptrs ( cm , xd , ( cpi -> ref_frame_flags & VP9_LAST_FLAG ) ? LAST_FRAME : NONE , ( cpi -> ref_frame_flags & VP9_GOLD_FLAG ) ? GOLDEN_FRAME : NONE ) ; cpi -> Source = vp9_scale_if_required ( cm , cpi -> un_scaled_source , & cpi -> scaled_source ) ; } vp9_setup_block_planes ( & x -> e_mbd , cm -> subsampling_x , cm -> subsampling_y ) ; vp9_setup_src_planes ( x , cpi -> Source , 0 , 0 ) ; vp9_setup_dst_planes ( xd -> plane , new_yv12 , 0 , 0 ) ; if ( ! frame_is_intra_only ( cm ) ) { vp9_setup_pre_planes ( xd , 0 , first_ref_buf , 0 , 0 , NULL ) ; } xd -> mi = cm -> mi_grid_visible ; xd -> mi [ 0 ] = cm -> mi <S2SV_ModEnd> ; vp9_frame_init_quantizer ( <S2SV_ModStart> 0 ) ; recon_y_stride = new_yv12 -> y_stride ; recon_uv_stride = new_yv12 -> uv_stride ; uv_mb_height = 16 >> ( new_yv12 -> y_height > new_yv12 -> uv_height ) ; <S2SV_ModStart> mb_row ) { MV best_ref_mv = { 0 , 0 } <S2SV_ModEnd> ; xd -> <S2SV_ModStart> mb_row ) ; <S2SV_ModEnd> const BLOCK_SIZE bsize <S2SV_ModStart> mb_col ) ; double log_intra ; int level_sample ; # if CONFIG_FP_MB_STATS const int mb_index = mb_row * cm -> mb_cols + mb_col ; # endif vpx_clear_system_state <S2SV_ModEnd> ( ) ; <S2SV_ModStart> mi_cols ) ; x -> skip_encode = 0 ; xd -> mi [ 0 ] -> mbmi . mode = DC_PRED ; xd -> mi [ 0 ] -> mbmi . tx_size = use_dc_pred ? ( bsize >= BLOCK_16X16 ? TX_16X16 : TX_8X8 ) : TX_4X4 ; vp9_encode_intra_block_plane ( x , bsize , 0 ) ; this_error = vpx_get_mb_ss ( x -> plane [ 0 ] . src_diff ) ; if ( this_error < UL_INTRA_THRESH ) { ++ intra_skip_count ; } else if ( ( mb_col > 0 ) && ( image_data_start_row == INVALID_ROW ) ) { image_data_start_row = mb_row ; } # if CONFIG_VP9_HIGHBITDEPTH if ( cm -> use_highbitdepth ) { switch ( cm -> bit_depth ) { case VPX_BITS_8 : break ; case VPX_BITS_10 : this_error >>= 4 ; break ; case VPX_BITS_12 : this_error >>= 8 ; break ; default : assert ( 0 && \"cm->bit_depth<S2SV_blank>should<S2SV_blank>be<S2SV_blank>VPX_BITS_8,<S2SV_blank>\" \"VPX_BITS_10<S2SV_blank>or<S2SV_blank>VPX_BITS_12\" ) ; return ; } } # endif vpx_clear_system_state ( ) ; log_intra = log ( this_error + 1.0 ) ; if ( log_intra < 10.0 ) intra_factor += 1.0 + ( ( 10.0 - log_intra ) * 0.05 ) ; else intra_factor += 1.0 ; # if CONFIG_VP9_HIGHBITDEPTH if ( cm -> use_highbitdepth ) level_sample = CONVERT_TO_SHORTPTR ( x -> plane [ 0 ] . src . buf ) [ 0 ] ; else level_sample = x -> plane [ 0 ] . src . buf [ 0 ] ; # else level_sample = x -> plane [ 0 ] . src . buf [ 0 ] ; # endif if ( ( level_sample < DARK_THRESH ) && ( log_intra < 9.0 ) ) brightness_factor += 1.0 + ( 0.01 * ( DARK_THRESH - level_sample ) ) ; else brightness_factor += 1.0 ; <S2SV_ModEnd> this_error += intrapenalty <S2SV_ModStart> ) this_error ; # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] = 0 ; } # endif <S2SV_ModStart> ; if ( ( lc == NULL && <S2SV_ModStart> > 0 ) || ( lc != NULL && lc -> current_video_frame_in_layer > 0 ) ) <S2SV_ModStart> tmp_err , motion_error , raw_motion_error ; MV mv = { 0 , 0 } , tmp_mv = { 0 , 0 } ; struct buf_2d unscaled_last_source_buf_2d <S2SV_ModEnd> ; xd -> <S2SV_ModStart> + recon_yoffset ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { motion_error = highbd_get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & xd -> plane [ 0 ] . pre [ 0 ] , xd -> bd ) ; } else { motion_error = get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & xd -> plane [ 0 ] . pre [ 0 ] ) ; } # else motion_error = get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & xd -> plane [ 0 ] . pre [ 0 ] ) ; # endif unscaled_last_source_buf_2d . buf = cpi -> unscaled_last_source -> y_buffer + recon_yoffset ; unscaled_last_source_buf_2d . stride = cpi -> unscaled_last_source -> y_stride ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { raw_motion_error = highbd_get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & unscaled_last_source_buf_2d , xd -> bd ) ; } else { raw_motion_error = get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & unscaled_last_source_buf_2d ) ; } # else raw_motion_error = get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & unscaled_last_source_buf_2d ) ; # endif if ( raw_motion_error > 25 || lc != NULL ) { first_pass_motion_search ( cpi , x , & best_ref_mv , & mv , & motion_error ) ; if ( ! is_zero_mv ( & best_ref_mv ) ) { tmp_err = INT_MAX ; first_pass_motion_search ( cpi , x , & zero_mv , & tmp_mv , & tmp_err ) ; <S2SV_ModEnd> if ( tmp_err <S2SV_ModStart> tmp_err ; mv = tmp_mv ; } } if ( ( ( lc == NULL && <S2SV_ModEnd> cm -> current_video_frame <S2SV_ModStart> current_video_frame > 1 ) || ( lc != NULL && lc -> current_video_frame_in_layer > 1 ) ) <S2SV_ModStart> + recon_yoffset ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { gf_motion_error = highbd_get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & xd -> plane [ 0 ] . pre [ 0 ] , xd -> bd ) ; } else { gf_motion_error = get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & xd -> plane [ 0 ] . pre [ 0 ] ) ; } # else gf_motion_error = get_prediction_error ( bsize , & x -> plane [ 0 ] . src , & xd -> plane [ 0 ] . pre [ 0 ] ) ; # endif <S2SV_ModEnd> first_pass_motion_search ( cpi <S2SV_ModStart> , & tmp_mv <S2SV_ModEnd> , & gf_motion_error <S2SV_ModStart> gf_motion_error ) ; <S2SV_ModEnd> if ( gf_motion_error <S2SV_ModStart> motion_error ; } } else { sr_coded_error += motion_error ; } best_ref_mv . row = 0 ; best_ref_mv . col = 0 ; # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] = 0 ; cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_DCINTRA_MASK ; cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_MOTION_ZERO_MASK ; if ( this_error > FPMB_ERROR_LARGE_TH ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_ERROR_LARGE_MASK ; } else if ( this_error < FPMB_ERROR_SMALL_TH ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_ERROR_SMALL_MASK ; } } # endif <S2SV_ModEnd> if ( motion_error <S2SV_ModStart> this_error ) { vpx_clear_system_state ( ) ; <S2SV_ModStart> 10 ) && ( this_error < ( <S2SV_ModEnd> 2 * intrapenalty <S2SV_ModStart> * intrapenalty ) ) ) { neutral_count += 1.0 ; } else if ( ( this_error > NCOUNT_INTRA_THRESH ) && ( this_error < ( NCOUNT_INTRA_FACTOR * motion_error ) ) ) { neutral_count += ( double ) motion_error / DOUBLE_DIVIDE_CHECK ( ( double ) this_error ) ; } mv <S2SV_ModEnd> . row *= <S2SV_ModStart> ; mv . <S2SV_ModEnd> col *= 8 <S2SV_ModStart> [ 0 ] . as_mv <S2SV_ModStart> += mv . <S2SV_ModEnd> row ; sum_mvr_abs <S2SV_ModStart> ( mv . <S2SV_ModEnd> row ) ; <S2SV_ModStart> += mv . <S2SV_ModEnd> col ; sum_mvc_abs <S2SV_ModStart> ( mv . <S2SV_ModEnd> col ) ; <S2SV_ModStart> += mv . <S2SV_ModEnd> row * mv <S2SV_ModStart> row * mv <S2SV_ModEnd> . row ; <S2SV_ModStart> += mv . <S2SV_ModEnd> col * mv <S2SV_ModStart> col * mv <S2SV_ModEnd> . col ; <S2SV_ModStart> intercount ; best_ref_mv = mv ; # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] = 0 ; cpi -> twopass . frame_mb_stats_buf [ mb_index ] &= ~ FPMB_DCINTRA_MASK ; cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_MOTION_ZERO_MASK ; if ( this_error > FPMB_ERROR_LARGE_TH ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_ERROR_LARGE_MASK ; } else if ( this_error < FPMB_ERROR_SMALL_TH ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_ERROR_SMALL_MASK ; } } # endif if ( ! is_zero_mv ( & mv ) <S2SV_ModEnd> ) { ++ <S2SV_ModStart> ++ mvcount ; # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] &= ~ FPMB_MOTION_ZERO_MASK ; <S2SV_ModStart> ( mv . as_mv . col > 0 && mv . as_mv . col >= abs ( mv . as_mv . row ) ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_MOTION_RIGHT_MASK ; } else if ( mv . as_mv . row < 0 && abs ( mv . as_mv . row ) >= abs ( mv . as_mv . col ) ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_MOTION_UP_MASK ; } else if ( mv . as_mv . col < 0 && abs ( mv . as_mv . col ) >= abs ( mv . as_mv . row ) ) { cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_MOTION_LEFT_MASK ; } else { cpi -> twopass . frame_mb_stats_buf [ mb_index ] |= FPMB_MOTION_DOWN_MASK ; } } # endif if ( ! is_equal_mv ( & mv , & lastmv ) <S2SV_ModEnd> ) ++ new_mv_count <S2SV_ModStart> ++ new_mv_count ; lastmv = mv <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( mv . <S2SV_ModEnd> row > 0 <S2SV_ModStart> if ( mv <S2SV_ModEnd> . row < <S2SV_ModStart> ( mv . <S2SV_ModEnd> row > 0 <S2SV_ModStart> if ( mv <S2SV_ModEnd> . row < <S2SV_ModStart> ( mv . <S2SV_ModEnd> col > 0 <S2SV_ModStart> if ( mv <S2SV_ModEnd> . col < <S2SV_ModStart> ( mv . <S2SV_ModEnd> col > 0 <S2SV_ModStart> if ( mv <S2SV_ModEnd> . col < <S2SV_ModStart> -> mb_cols ; vpx_clear_system_state ( ) ; } if ( ( image_data_start_row > cm -> mb_rows / 2 ) || ( image_data_start_row == INVALID_ROW ) ) { image_data_start_row = cm -> mb_rows / 2 ; } if ( image_data_start_row > 0 ) { intra_skip_count = MAX ( 0 , intra_skip_count - ( image_data_start_row * cm -> mb_cols * 2 ) ) ; } <S2SV_ModEnd> { FIRSTPASS_STATS fps <S2SV_ModStart> FIRSTPASS_STATS fps ; const int num_mbs = ( cpi -> oxcf . resize_mode != RESIZE_NONE ) ? cpi -> initial_mbs : cpi -> common . MBs ; const double min_err = 200 * sqrt ( num_mbs ) ; intra_factor = intra_factor / ( double ) num_mbs ; brightness_factor = brightness_factor / ( double ) num_mbs ; fps . weight = intra_factor * brightness_factor ; fps . <S2SV_ModEnd> frame = cm <S2SV_ModStart> svc . spatial_layer_id ; fps . coded_error = ( double ) ( coded_error >> 8 ) + min_err ; fps . sr_coded_error = ( double ) ( sr_coded_error >> 8 ) + min_err <S2SV_ModStart> >> 8 ) + min_err <S2SV_ModEnd> ; fps . <S2SV_ModStart> ) intercount / num_mbs <S2SV_ModEnd> ; fps . <S2SV_ModStart> ) second_ref_count / num_mbs <S2SV_ModEnd> ; fps . <S2SV_ModStart> ) neutral_count / num_mbs ; fps . intra_skip_pct = ( double ) intra_skip_count / num_mbs ; fps . inactive_zone_rows = ( double ) image_data_start_row ; fps . inactive_zone_cols = ( double ) 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) sum_mvrs - ( ( double ) sum_mvr * sum_mvr <S2SV_ModEnd> / mvcount ) <S2SV_ModStart> ) sum_mvcs - ( ( double ) sum_mvc * sum_mvc <S2SV_ModEnd> / mvcount ) <S2SV_ModStart> ) mvcount / num_mbs <S2SV_ModEnd> ; } else <S2SV_ModStart> double ) ( <S2SV_ModEnd> source -> ts_end <S2SV_ModStart> -> ts_end - <S2SV_ModEnd> source -> ts_start <S2SV_ModStart> fps ) ; # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats ) { output_fpmb_stats ( twopass -> frame_mb_stats_buf , cm , cpi -> output_pkt_list ) ; } # endif <S2SV_ModStart> NULL ) { ref_cnt_fb ( pool -> frame_bufs , & cm -> ref_frame_map [ cpi -> gld_fb_idx ] , cm -> ref_frame_map [ cpi -> lst_fb_idx ] <S2SV_ModEnd> ) ; } <S2SV_ModStart> sr_update_lag ; } vpx_extend_frame_borders ( new_yv12 ) ; if ( lc != NULL <S2SV_ModEnd> ) { vp9_update_reference_frames <S2SV_ModStart> } else { ref_cnt_fb ( pool -> frame_bufs , & cm -> ref_frame_map [ cpi -> lst_fb_idx ] , cm -> new_fb_idx ) ; } <S2SV_ModEnd> if ( cm <S2SV_ModStart> == 0 && cpi -> gld_fb_idx != INVALID_IDX && lc == <S2SV_ModEnd> NULL ) { <S2SV_ModStart> NULL ) { ref_cnt_fb ( pool -> frame_bufs , & cm -> ref_frame_map [ cpi -> gld_fb_idx ] , cm -> ref_frame_map [ cpi -> lst_fb_idx ] <S2SV_ModEnd> ) ; } <S2SV_ModStart> -> current_video_frame ; if ( cpi -> use_svc ) vp9_inc_frame_in_layer ( cpi ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void down2_symeven ( const uint8_t * const input , int length , uint8_t * output ) { <S2SV_StartBug> static const int16_t * filter = vp9_down2_symeven_half_filter ; <S2SV_EndBug> const int filter_len_half = sizeof ( vp9_down2_symeven_half_filter ) / 2 ; int i , j ; uint8_t * optr = output ; int l1 = filter_len_half ; int l2 = ( length - filter_len_half ) ; l1 += ( l1 & 1 ) ; l2 += ( l2 & 1 ) ; if ( l1 > l2 ) { for ( i = 0 ; i < length ; i += 2 ) { int sum = ( 1 << ( FILTER_BITS - 1 ) ) ; for ( j = 0 ; j < filter_len_half ; ++ j ) { sum += ( input [ ( i - j < 0 ? 0 : i - j ) ] + input [ ( i + 1 + j >= length ? length - 1 : i + 1 + j ) ] ) * filter [ j ] ; } sum >>= FILTER_BITS ; * optr ++ = clip_pixel ( sum ) ; } } else { for ( i = 0 ; i < l1 ; i += 2 ) { int sum = ( 1 << ( FILTER_BITS - 1 ) ) ; for ( j = 0 ; j < filter_len_half ; ++ j ) { sum += ( input [ ( i - j < 0 ? 0 : i - j ) ] + input [ i + 1 + j ] ) * filter [ j ] ; } sum >>= FILTER_BITS ; * optr ++ = clip_pixel ( sum ) ; } for ( ; i < l2 ; i += 2 ) { int sum = ( 1 << ( FILTER_BITS - 1 ) ) ; for ( j = 0 ; j < filter_len_half ; ++ j ) { sum += ( input [ i - j ] + input [ i + 1 + j ] ) * filter [ j ] ; } sum >>= FILTER_BITS ; * optr ++ = clip_pixel ( sum ) ; } for ( ; i < length ; i += 2 ) { int sum = ( 1 << ( FILTER_BITS - 1 ) ) ; for ( j = 0 ; j < filter_len_half ; ++ j ) { sum += ( input [ i - j ] + input [ ( i + 1 + j >= length ? length - 1 : i + 1 + j ) ] ) * filter [ j ] ; } sum >>= FILTER_BITS ; * optr ++ = clip_pixel ( sum ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> output ) { <S2SV_ModEnd> const int16_t *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000251\n\n```\nCWE-787 static inline int l2cap_connect_rsp ( struct l2cap_conn * conn , struct l2cap_cmd_hdr * cmd , u8 * data ) { struct l2cap_conn_rsp * rsp = ( struct l2cap_conn_rsp * ) data ; u16 scid , dcid , result , status ; struct sock * sk ; u8 req [ 128 ] ; scid = __le16_to_cpu ( rsp -> scid ) ; dcid = __le16_to_cpu ( rsp -> dcid ) ; result = __le16_to_cpu ( rsp -> result ) ; status = __le16_to_cpu ( rsp -> status ) ; BT_DBG ( \"dcid<S2SV_blank>0x%4.4x<S2SV_blank>scid<S2SV_blank>0x%4.4x<S2SV_blank>result<S2SV_blank>0x%2.2x<S2SV_blank>status<S2SV_blank>0x%2.2x\" , dcid , scid , result , status ) ; if ( scid ) { sk = l2cap_get_chan_by_scid ( & conn -> chan_list , scid ) ; if ( ! sk ) return 0 ; } else { sk = l2cap_get_chan_by_ident ( & conn -> chan_list , cmd -> ident ) ; if ( ! sk ) return 0 ; } switch ( result ) { case L2CAP_CR_SUCCESS : sk -> sk_state = BT_CONFIG ; l2cap_pi ( sk ) -> ident = 0 ; l2cap_pi ( sk ) -> dcid = dcid ; l2cap_pi ( sk ) -> conf_state |= L2CAP_CONF_REQ_SENT ; l2cap_pi ( sk ) -> conf_state &= ~ L2CAP_CONF_CONNECT_PEND ; l2cap_send_cmd ( conn , l2cap_get_ident ( conn ) , L2CAP_CONF_REQ , l2cap_build_conf_req ( sk , req ) , req ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case L2CAP_CR_PEND : l2cap_pi ( sk ) -> conf_state |= L2CAP_CONF_CONNECT_PEND ; break ; default : l2cap_chan_del ( sk , ECONNREFUSED ) ; break ; } bh_unlock_sock ( sk ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> req ) ; l2cap_pi ( sk ) -> num_conf_req ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1792\n\n```\nCWE-362 int install_user_keyrings ( void ) { struct user_struct * user ; const struct cred * cred ; struct key * uid_keyring , * session_keyring ; key_perm_t user_keyring_perm ; char buf [ 20 ] ; int ret ; uid_t uid ; user_keyring_perm = ( KEY_POS_ALL & ~ KEY_POS_SETATTR ) | KEY_USR_ALL ; cred = current_cred ( ) ; user = cred -> user ; uid = from_kuid ( cred -> user_ns , user -> uid ) ; kenter ( \"%p{%u}\" , user , uid ) ; <S2SV_StartBug> if ( user -> uid_keyring ) { <S2SV_EndBug> kleave ( \"<S2SV_blank>=<S2SV_blank>0<S2SV_blank>[exist]\" ) ; return 0 ; } mutex_lock ( & key_user_keyring_mutex ) ; ret = 0 ; if ( ! user -> uid_keyring ) { sprintf ( buf , \"_uid.%u\" , uid ) ; uid_keyring = find_keyring_by_name ( buf , true ) ; if ( IS_ERR ( uid_keyring ) ) { uid_keyring = keyring_alloc ( buf , user -> uid , INVALID_GID , cred , user_keyring_perm , KEY_ALLOC_IN_QUOTA , NULL ) ; if ( IS_ERR ( uid_keyring ) ) { ret = PTR_ERR ( uid_keyring ) ; goto error ; } } sprintf ( buf , \"_uid_ses.%u\" , uid ) ; session_keyring = find_keyring_by_name ( buf , true ) ; if ( IS_ERR ( session_keyring ) ) { session_keyring = keyring_alloc ( buf , user -> uid , INVALID_GID , cred , user_keyring_perm , KEY_ALLOC_IN_QUOTA , NULL ) ; if ( IS_ERR ( session_keyring ) ) { ret = PTR_ERR ( session_keyring ) ; goto error_release ; } ret = key_link ( session_keyring , uid_keyring ) ; if ( ret < 0 ) goto error_release_both ; } user -> uid_keyring = uid_keyring ; user -> session_keyring = session_keyring ; } mutex_unlock ( & key_user_keyring_mutex ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>0\" ) ; return 0 ; error_release_both : key_put ( session_keyring ) ; error_release : key_put ( uid_keyring ) ; error : mutex_unlock ( & key_user_keyring_mutex ) ; kleave ( \"<S2SV_blank>=<S2SV_blank>%d\" , ret ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> user -> uid_keyring && user -> session_keyring\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12135\n\n```\nCWE-190 int bson_check_string ( bson * b , const char * string , <S2SV_StartBug> const int length ) { <S2SV_EndBug> return bson_validate_string ( b , ( const unsigned char * ) string , length , 1 , 0 , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> string , const size_t <S2SV_ModEnd> length ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3412\n\n```\nCWE-189 static int efx_register_netdev ( struct efx_nic * efx ) { struct net_device * net_dev = efx -> net_dev ; struct efx_channel * channel ; int rc ; net_dev -> watchdog_timeo = 5 * HZ ; net_dev -> irq = efx -> pci_dev -> irq ; net_dev -> netdev_ops = & efx_netdev_ops ; SET_ETHTOOL_OPS ( net_dev , & efx_ethtool_ops ) ; <S2SV_StartBug> efx -> mac_op -> update_stats ( efx ) ; <S2SV_EndBug> memset ( & efx -> mac_stats , 0 , sizeof ( efx -> mac_stats ) ) ; rtnl_lock ( ) ; rc = dev_alloc_name ( net_dev , net_dev -> name ) ; if ( rc < 0 ) goto fail_locked ; efx_update_name ( efx ) ; rc = register_netdevice ( net_dev ) ; if ( rc ) goto fail_locked ; efx_for_each_channel ( channel , efx ) { struct efx_tx_queue * tx_queue ; efx_for_each_channel_tx_queue ( tx_queue , channel ) efx_init_tx_queue_core_txq ( tx_queue ) ; } netif_carrier_off ( efx -> net_dev ) ; rtnl_unlock ( ) ; rc = device_create_file ( & efx -> pci_dev -> dev , & dev_attr_phy_type ) ; if ( rc ) { netif_err ( efx , drv , efx -> net_dev , \"failed<S2SV_blank>to<S2SV_blank>init<S2SV_blank>net<S2SV_blank>dev<S2SV_blank>attributes\\\\n\" ) ; goto fail_registered ; } return 0 ; fail_locked : rtnl_unlock ( ) ; netif_err ( efx , drv , efx -> net_dev , \"could<S2SV_blank>not<S2SV_blank>register<S2SV_blank>net<S2SV_blank>dev\\\\n\" ) ; return rc ; fail_registered : unregister_netdev ( net_dev ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> efx_ethtool_ops ) ; net_dev -> gso_max_segs = EFX_TSO_MAX_SEGS ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_frame ( vpx_codec_ctx_t * codec , <S2SV_EndBug> vpx_image_t * img , int frame_index , <S2SV_StartBug> VpxVideoWriter * writer ) { <S2SV_EndBug> vpx_codec_iter_t iter = NULL ; const vpx_codec_cx_pkt_t * pkt = NULL ; const vpx_codec_err_t res = vpx_codec_encode ( codec , img , frame_index , 1 , 0 , VPX_DL_GOOD_QUALITY ) ; if ( res != VPX_CODEC_OK ) die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame\" ) ; <S2SV_StartBug> while ( ( pkt = vpx_codec_get_cx_data ( codec , & iter ) ) != NULL ) { <S2SV_EndBug> if ( pkt -> kind == VPX_CODEC_CX_FRAME_PKT ) { const int keyframe = ( pkt -> data . frame . flags & VPX_FRAME_IS_KEY ) != 0 ; if ( ! vpx_video_writer_write_frame ( writer , pkt -> data . frame . buf , pkt -> data . frame . sz , pkt -> data . frame . pts ) ) { die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>write<S2SV_blank>compressed<S2SV_blank>frame\" ) ; } printf ( keyframe ? \"K\" : \".\" ) ; fflush ( stdout ) ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> encode_frame ( vpx_codec_ctx_t <S2SV_ModStart> writer ) { int got_pkts = 0 ; <S2SV_ModStart> NULL ) { got_pkts = 1 ; <S2SV_ModStart> ; } } return got_pkts ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31259\n\n```\nCWE-476 void gf_isom_cenc_get_default_info_internal ( GF_TrackBox * trak , u32 sampleDescriptionIndex , u32 * container_type , Bool * default_IsEncrypted , u8 * crypt_byte_block , u8 * skip_byte_block , const u8 * * key_info , u32 * key_info_size ) { GF_ProtectionSchemeInfoBox * sinf ; if ( default_IsEncrypted ) * default_IsEncrypted = GF_FALSE ; if ( crypt_byte_block ) * crypt_byte_block = 0 ; if ( skip_byte_block ) * skip_byte_block = 0 ; if ( container_type ) * container_type = 0 ; if ( key_info ) * key_info = NULL ; if ( key_info_size ) * key_info_size = 0 ; sinf = isom_get_sinf_entry ( trak , sampleDescriptionIndex , GF_ISOM_CENC_SCHEME , NULL ) ; if ( ! sinf ) sinf = isom_get_sinf_entry ( trak , sampleDescriptionIndex , GF_ISOM_CBC_SCHEME , NULL ) ; if ( ! sinf ) sinf = isom_get_sinf_entry ( trak , sampleDescriptionIndex , GF_ISOM_CENS_SCHEME , NULL ) ; if ( ! sinf ) sinf = isom_get_sinf_entry ( trak , sampleDescriptionIndex , GF_ISOM_CBCS_SCHEME , NULL ) ; if ( ! sinf ) sinf = isom_get_sinf_entry ( trak , sampleDescriptionIndex , GF_ISOM_PIFF_SCHEME , NULL ) ; if ( ! sinf ) { u32 i , nb_stsd = gf_list_count ( trak -> Media -> information -> sampleTable -> SampleDescription -> child_boxes ) ; for ( i = 0 ; i < nb_stsd ; i ++ ) { GF_ProtectionSchemeInfoBox * a_sinf ; GF_SampleEntryBox * sentry = NULL ; if ( i + 1 == sampleDescriptionIndex ) continue ; sentry = gf_list_get ( trak -> Media -> information -> sampleTable -> SampleDescription -> child_boxes , i ) ; a_sinf = ( GF_ProtectionSchemeInfoBox * ) gf_isom_box_find_child ( sentry -> child_boxes , GF_ISOM_BOX_TYPE_SINF ) ; if ( ! a_sinf ) continue ; return ; } } if ( sinf && sinf -> info && sinf -> info -> tenc ) { if ( default_IsEncrypted ) * default_IsEncrypted = sinf -> info -> tenc -> isProtected ; if ( crypt_byte_block ) * crypt_byte_block = sinf -> info -> tenc -> crypt_byte_block ; if ( skip_byte_block ) * skip_byte_block = sinf -> info -> tenc -> skip_byte_block ; if ( key_info ) * key_info = sinf -> info -> tenc -> key_info ; if ( key_info_size ) { * key_info_size = 20 ; if ( ! sinf -> info -> tenc -> key_info [ 3 ] ) * key_info_size += 1 + sinf -> info -> tenc -> key_info [ 20 ] ; } if ( container_type ) * container_type = GF_ISOM_BOX_TYPE_SENC ; } else if ( sinf && sinf -> info && sinf -> info -> piff_tenc ) { if ( default_IsEncrypted ) * default_IsEncrypted = GF_TRUE ; if ( key_info ) * key_info = sinf -> info -> piff_tenc -> key_info ; if ( key_info_size ) * key_info_size = 19 ; if ( container_type ) * container_type = GF_ISOM_BOX_UUID_PSEC ; } else { u32 i , count = 0 ; GF_CENCSampleEncryptionGroupEntry * seig_entry = NULL ; if ( ! trak -> moov -> mov -> is_smooth ) count = gf_list_count ( trak -> Media -> information -> sampleTable -> sampleGroupsDescription ) ; for ( i = 0 ; i < count ; i ++ ) { GF_SampleGroupDescriptionBox * sgdesc = ( GF_SampleGroupDescriptionBox * ) gf_list_get ( trak -> Media -> information -> sampleTable -> sampleGroupsDescription , i ) ; if ( sgdesc -> grouping_type != GF_ISOM_SAMPLE_GROUP_SEIG ) continue ; if ( sgdesc -> default_description_index ) seig_entry = gf_list_get ( sgdesc -> group_descriptions , sgdesc -> default_description_index - 1 ) ; else seig_entry = gf_list_get ( sgdesc -> group_descriptions , 0 ) ; <S2SV_StartBug> if ( ! seig_entry -> key_info [ 0 ] ) <S2SV_EndBug> seig_entry = NULL ; break ; } if ( seig_entry ) { if ( default_IsEncrypted ) * default_IsEncrypted = seig_entry -> IsProtected ; if ( crypt_byte_block ) * crypt_byte_block = seig_entry -> crypt_byte_block ; if ( skip_byte_block ) * skip_byte_block = seig_entry -> skip_byte_block ; if ( key_info ) * key_info = seig_entry -> key_info ; if ( key_info_size ) * key_info_size = seig_entry -> key_info_size ; if ( container_type ) * container_type = GF_ISOM_BOX_TYPE_SENC ; } else { if ( ! trak -> moov -> mov -> is_smooth ) { trak -> moov -> mov -> is_smooth = GF_TRUE ; GF_LOG ( GF_LOG_WARNING , GF_LOG_CONTAINER , ( \"[iso<S2SV_blank>file]<S2SV_blank>senc<S2SV_blank>box<S2SV_blank>without<S2SV_blank>tenc,<S2SV_blank>assuming<S2SV_blank>MS<S2SV_blank>smooth+piff\\\\n\" ) ) ; } if ( default_IsEncrypted ) * default_IsEncrypted = GF_TRUE ; if ( container_type ) * container_type = GF_ISOM_BOX_UUID_PSEC ; } } if ( container_type && trak -> sample_encryption ) { if ( trak -> sample_encryption -> type == GF_ISOM_BOX_TYPE_SENC ) * container_type = GF_ISOM_BOX_TYPE_SENC ; else if ( trak -> sample_encryption -> type == GF_ISOM_BOX_TYPE_UUID ) * container_type = ( ( GF_UUIDBox * ) trak -> sample_encryption ) -> internal_4cc ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( seig_entry &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int netlink_recvmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct scm_cookie scm ; struct sock * sk = sock -> sk ; struct netlink_sock * nlk = nlk_sk ( sk ) ; int noblock = flags & MSG_DONTWAIT ; size_t copied ; struct sk_buff * skb , * data_skb ; int err , ret ; if ( flags & MSG_OOB ) return - EOPNOTSUPP ; copied = 0 ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( skb == NULL ) goto out ; data_skb = skb ; # ifdef CONFIG_COMPAT_NETLINK_MESSAGES if ( unlikely ( skb_shinfo ( skb ) -> frag_list ) ) { if ( flags & MSG_CMSG_COMPAT ) data_skb = skb_shinfo ( skb ) -> frag_list ; } # endif <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> copied = data_skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( data_skb ) ; err = skb_copy_datagram_iovec ( data_skb , 0 , msg -> msg_iov , copied ) ; if ( msg -> msg_name ) { struct sockaddr_nl * addr = ( struct sockaddr_nl * ) msg -> msg_name ; addr -> nl_family = AF_NETLINK ; addr -> nl_pad = 0 ; addr -> nl_pid = NETLINK_CB ( skb ) . portid ; addr -> nl_groups = netlink_group_mask ( NETLINK_CB ( skb ) . dst_group ) ; msg -> msg_namelen = sizeof ( * addr ) ; } if ( nlk -> flags & NETLINK_RECV_PKTINFO ) netlink_cmsg_recv_pktinfo ( msg , skb ) ; if ( NULL == siocb -> scm ) { memset ( & scm , 0 , sizeof ( scm ) ) ; siocb -> scm = & scm ; } siocb -> scm -> creds = * NETLINK_CREDS ( skb ) ; if ( flags & MSG_TRUNC ) copied = data_skb -> len ; skb_free_datagram ( sk , skb ) ; if ( nlk -> cb_running && atomic_read ( & sk -> sk_rmem_alloc ) <= sk -> sk_rcvbuf / 2 ) { ret = netlink_dump ( sk ) ; if ( ret ) { sk -> sk_err = ret ; sk -> sk_error_report ( sk ) ; } } scm_recv ( sock , msg , siocb -> scm , flags ) ; out : netlink_rcv_wake ( sk ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } # endif <S2SV_ModEnd> copied = data_skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15385\n\n```\nCWE-119 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( shdr -> sh_size < 1 ) { return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; <S2SV_StartBug> for ( cnt = 0 , i = 0 ; cnt < shdr -> sh_info && ( ( char * ) defs + i < end ) ; ++ cnt ) { <S2SV_EndBug> Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; char key [ 32 ] = { 0 } ; Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) vstart += verdef -> vd_aux ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } <S2SV_StartBug> i += verdef -> vd_next ; <S2SV_EndBug> } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; i >= 0 && <S2SV_ModStart> out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum path_in ( PG_FUNCTION_ARGS ) { char * str = PG_GETARG_CSTRING ( 0 ) ; PATH * path ; int isopen ; char * s ; int npts ; <S2SV_StartBug> int size ; <S2SV_EndBug> int depth = 0 ; if ( ( npts = pair_count ( str , ',' ) ) <= 0 ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"invalid<S2SV_blank>input<S2SV_blank>syntax<S2SV_blank>for<S2SV_blank>type<S2SV_blank>path:<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ) ) ; s = str ; while ( isspace ( ( unsigned char ) * s ) ) s ++ ; if ( ( * s == LDELIM ) && ( strrchr ( s , LDELIM ) == s ) ) { s ++ ; depth ++ ; } <S2SV_StartBug> size = offsetof ( PATH , p [ 0 ] ) + sizeof ( path -> p [ 0 ] ) * npts ; <S2SV_EndBug> path = ( PATH * ) palloc ( size ) ; SET_VARSIZE ( path , size ) ; path -> npts = npts ; if ( ( ! path_decode ( TRUE , npts , s , & isopen , & s , & ( path -> p [ 0 ] ) ) ) && ( ! ( ( depth == 0 ) && ( * s == '\\\\0' ) ) ) && ! ( ( depth >= 1 ) && ( * s == RDELIM ) ) ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"invalid<S2SV_blank>input<S2SV_blank>syntax<S2SV_blank>for<S2SV_blank>type<S2SV_blank>path:<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ) ) ; path -> closed = ( ! isopen ) ; path -> dummy = 0 ; PG_RETURN_PATH_P ( path ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int size ; int base_size <S2SV_ModStart> ++ ; } base_size = sizeof ( path -> <S2SV_ModEnd> p [ 0 <S2SV_ModStart> 0 ] ) * npts ; size = offsetof ( PATH , <S2SV_ModEnd> p [ 0 <S2SV_ModStart> 0 ] ) + base_size ; if ( base_size / npts != sizeof ( path -> p [ 0 ] ) || size <= base_size ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"too<S2SV_blank>many<S2SV_blank>points<S2SV_blank>requested\" ) ) ) <S2SV_ModEnd> ; path =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2686\n\n```\nCWE-264 SYSCALL_DEFINE6 ( recvfrom , int , fd , void __user * , ubuf , size_t , size , unsigned int , flags , struct sockaddr __user * , addr , int __user * , addr_len ) { struct socket * sock ; struct iovec iov ; struct msghdr msg ; struct sockaddr_storage address ; int err , err2 ; int fput_needed ; if ( size > INT_MAX ) <S2SV_StartBug> size = INT_MAX ; <S2SV_EndBug> sock = sockfd_lookup_light ( fd , & err , & fput_needed ) ; if ( ! sock ) goto out ; msg . msg_control = NULL ; msg . msg_controllen = 0 ; iov . iov_len = size ; iov . iov_base = ubuf ; iov_iter_init ( & msg . msg_iter , READ , & iov , 1 , size ) ; msg . msg_name = addr ? ( struct sockaddr * ) & address : NULL ; msg . msg_namelen = 0 ; if ( sock -> file -> f_flags & O_NONBLOCK ) flags |= MSG_DONTWAIT ; err = sock_recvmsg ( sock , & msg , size , flags ) ; if ( err >= 0 && addr != NULL ) { err2 = move_addr_to_user ( & address , msg . msg_namelen , addr , addr_len ) ; if ( err2 < 0 ) err = err2 ; } fput_light ( sock -> file , fput_needed ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size = INT_MAX ; if ( unlikely ( ! access_ok ( VERIFY_WRITE , ubuf , size ) ) ) return - EFAULT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_gettargetinfo ( unsigned long arg ) <S2SV_EndBug> { struct mpt_ioctl_targetinfo __user * uarg = ( void __user * ) arg ; struct mpt_ioctl_targetinfo karg ; <S2SV_StartBug> MPT_ADAPTER * ioc ; <S2SV_EndBug> VirtDevice * vdevice ; char * pmem ; <S2SV_StartBug> int * pdata ; <S2SV_EndBug> int iocnum ; int numDevices = 0 ; int lun ; int maxWordsLeft ; int numBytes ; u8 port ; struct scsi_device * sdev ; if ( copy_from_user ( & karg , uarg , sizeof ( struct mpt_ioctl_targetinfo ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_gettargetinfo<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>mpt_ioctl_targetinfo<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uarg ) ; <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> } if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || ( ioc == NULL ) ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_gettargetinfo()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; } dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \"mptctl_gettargetinfo<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; numBytes = karg . hdr . maxDataSize - sizeof ( mpt_ioctl_header ) ; maxWordsLeft = numBytes / sizeof ( int ) ; port = karg . hdr . port ; if ( maxWordsLeft <= 0 ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_gettargetinfo()<S2SV_blank>-<S2SV_blank>no<S2SV_blank>memory<S2SV_blank>available!\\\\n\" , ioc -> name , __FILE__ , __LINE__ ) ; return - ENOMEM ; } pmem = kzalloc ( numBytes , GFP_KERNEL ) ; if ( ! pmem ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_gettargetinfo()<S2SV_blank>-<S2SV_blank>no<S2SV_blank>memory<S2SV_blank>available!\\\\n\" , ioc -> name , __FILE__ , __LINE__ ) ; return - ENOMEM ; } pdata = ( int * ) pmem ; if ( ioc -> sh ) { shost_for_each_device ( sdev , ioc -> sh ) { if ( ! maxWordsLeft ) continue ; vdevice = sdev -> hostdata ; if ( vdevice == NULL || vdevice -> vtarget == NULL ) continue ; if ( vdevice -> vtarget -> tflags & MPT_TARGET_FLAGS_RAID_COMPONENT ) continue ; lun = ( vdevice -> vtarget -> raidVolume ) ? 0x80 : vdevice -> lun ; * pdata = ( ( ( u8 ) lun << 16 ) + ( vdevice -> vtarget -> channel << 8 ) + ( vdevice -> vtarget -> id ) ) ; pdata ++ ; numDevices ++ ; -- maxWordsLeft ; } } karg . numDevices = numDevices ; if ( copy_to_user ( ( char __user * ) arg , & karg , sizeof ( struct mpt_ioctl_targetinfo ) ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_gettargetinfo<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>out<S2SV_blank>mpt_ioctl_targetinfo<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , uarg ) ; kfree ( pmem ) ; return - EFAULT ; } if ( copy_to_user ( uarg -> targetInfo , pmem , numBytes ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_gettargetinfo<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>out<S2SV_blank>mpt_ioctl_targetinfo<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , pdata ) ; kfree ( pmem ) ; return - EFAULT ; } kfree ( pmem ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_gettargetinfo ( MPT_ADAPTER * ioc , <S2SV_ModStart> mpt_ioctl_targetinfo karg ; <S2SV_ModEnd> VirtDevice * vdevice <S2SV_ModStart> int * pdata <S2SV_ModEnd> ; int numDevices <S2SV_ModStart> return - EFAULT <S2SV_ModEnd> ; } dctlprintk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2517\n\n```\nCWE-119 static int nl80211_trigger_scan ( struct sk_buff * skb , struct genl_info * info ) { struct cfg80211_registered_device * rdev = info -> user_ptr [ 0 ] ; struct net_device * dev = info -> user_ptr [ 1 ] ; struct cfg80211_scan_request * request ; struct nlattr * attr ; struct wiphy * wiphy ; int err , tmp , n_ssids = 0 , n_channels , i ; enum ieee80211_band band ; size_t ie_len ; if ( ! is_valid_ie_attr ( info -> attrs [ NL80211_ATTR_IE ] ) ) return - EINVAL ; wiphy = & rdev -> wiphy ; if ( ! rdev -> ops -> scan ) return - EOPNOTSUPP ; if ( rdev -> scan_req ) return - EBUSY ; if ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) { n_channels = validate_scan_freqs ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) ; if ( ! n_channels ) return - EINVAL ; } else { n_channels = 0 ; for ( band = 0 ; band < IEEE80211_NUM_BANDS ; band ++ ) if ( wiphy -> bands [ band ] ) n_channels += wiphy -> bands [ band ] -> n_channels ; } if ( info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] ) nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] , tmp ) n_ssids ++ ; if ( n_ssids > wiphy -> max_scan_ssids ) return - EINVAL ; if ( info -> attrs [ NL80211_ATTR_IE ] ) ie_len = nla_len ( info -> attrs [ NL80211_ATTR_IE ] ) ; else ie_len = 0 ; if ( ie_len > wiphy -> max_scan_ie_len ) return - EINVAL ; request = kzalloc ( sizeof ( * request ) + sizeof ( * request -> ssids ) * n_ssids + sizeof ( * request -> channels ) * n_channels + ie_len , GFP_KERNEL ) ; if ( ! request ) return - ENOMEM ; if ( n_ssids ) request -> ssids = ( void * ) & request -> channels [ n_channels ] ; request -> n_ssids = n_ssids ; if ( ie_len ) { if ( request -> ssids ) request -> ie = ( void * ) ( request -> ssids + n_ssids ) ; else request -> ie = ( void * ) ( request -> channels + n_channels ) ; } i = 0 ; if ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) { nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] , tmp ) { struct ieee80211_channel * chan ; chan = ieee80211_get_channel ( wiphy , nla_get_u32 ( attr ) ) ; if ( ! chan ) { err = - EINVAL ; goto out_free ; } if ( chan -> flags & IEEE80211_CHAN_DISABLED ) continue ; request -> channels [ i ] = chan ; i ++ ; } } else { for ( band = 0 ; band < IEEE80211_NUM_BANDS ; band ++ ) { int j ; if ( ! wiphy -> bands [ band ] ) continue ; for ( j = 0 ; j < wiphy -> bands [ band ] -> n_channels ; j ++ ) { struct ieee80211_channel * chan ; chan = & wiphy -> bands [ band ] -> channels [ j ] ; if ( chan -> flags & IEEE80211_CHAN_DISABLED ) continue ; request -> channels [ i ] = chan ; i ++ ; } } } if ( ! i ) { err = - EINVAL ; goto out_free ; } request -> n_channels = i ; i = 0 ; if ( info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] ) { <S2SV_StartBug> nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] , tmp ) { <S2SV_EndBug> if ( request -> ssids [ i ] . ssid_len > IEEE80211_MAX_SSID_LEN ) { err = - EINVAL ; goto out_free ; } memcpy ( request -> ssids [ i ] . ssid , nla_data ( attr ) , nla_len ( attr ) ) ; <S2SV_StartBug> request -> ssids [ i ] . ssid_len = nla_len ( attr ) ; <S2SV_EndBug> i ++ ; } } if ( info -> attrs [ NL80211_ATTR_IE ] ) { request -> ie_len = nla_len ( info -> attrs [ NL80211_ATTR_IE ] ) ; memcpy ( ( void * ) request -> ie , nla_data ( info -> attrs [ NL80211_ATTR_IE ] ) , request -> ie_len ) ; } request -> dev = dev ; request -> wiphy = & rdev -> wiphy ; rdev -> scan_req = request ; err = rdev -> ops -> scan ( & rdev -> wiphy , dev , request ) ; if ( ! err ) { nl80211_send_scan_start ( rdev , dev ) ; dev_hold ( dev ) ; } else { out_free : rdev -> scan_req = NULL ; kfree ( request ) ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp ) { request -> ssids [ i ] . ssid_len = nla_len ( attr ) ; <S2SV_ModStart> ) ) ; <S2SV_ModEnd> i ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14397\n\n```\nCWE-476 static void <S2SV_StartBug> sraSpanInsertBefore ( sraSpan * newspan , sraSpan * before ) { <S2SV_EndBug> newspan -> _next = before ; newspan -> _prev = before -> _prev ; before -> _prev -> _next = newspan ; before -> _prev = newspan ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , sraSpan * before ) { if ( newspan && <S2SV_ModStart> newspan ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 char * _single_string_alloc_and_copy ( LPCWSTR in ) { char * chr ; int len = 0 ; if ( ! in ) { <S2SV_StartBug> return in ; <S2SV_EndBug> } while ( in [ len ] != 0 ) { len ++ ; } chr = malloc ( len + 1 ) ; len = 0 ; while ( in [ len ] != 0 ) { chr [ len ] = 0xFF & in [ len ] ; len ++ ; } chr [ len ++ ] = '\\\\0' ; return chr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return NULL <S2SV_ModEnd> ; } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-732(不安全的权限设置)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12589\n\n```\nCWE-732 void preproc_mount_mnt_dir ( void ) { if ( ! tmpfs_mounted ) { if ( arg_debug ) printf ( \"Mounting<S2SV_blank>tmpfs<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>directory\\\\n\" , RUN_MNT_DIR ) ; if ( mount ( \"tmpfs\" , RUN_MNT_DIR , \"tmpfs\" , MS_NOSUID | MS_STRICTATIME , \"mode=755,gid=0\" ) < 0 ) errExit ( \"mounting<S2SV_blank>/run/firejail/mnt\" ) ; tmpfs_mounted = 1 ; fs_logger2 ( \"tmpfs\" , RUN_MNT_DIR ) ; # ifdef HAVE_SECCOMP <S2SV_StartBug> if ( arg_seccomp_block_secondary ) <S2SV_EndBug> copy_file ( PATH_SECCOMP_BLOCK_SECONDARY , RUN_SECCOMP_BLOCK_SECONDARY , getuid ( ) , getgid ( ) , 0644 ) ; else { copy_file ( PATH_SECCOMP_32 , RUN_SECCOMP_32 , getuid ( ) , getgid ( ) , 0644 ) ; } if ( arg_allow_debuggers ) copy_file ( PATH_SECCOMP_DEFAULT_DEBUG , RUN_SECCOMP_CFG , getuid ( ) , getgid ( ) , 0644 ) ; else copy_file ( PATH_SECCOMP_DEFAULT , RUN_SECCOMP_CFG , getuid ( ) , getgid ( ) , 0644 ) ; if ( arg_memory_deny_write_execute ) copy_file ( PATH_SECCOMP_MDWX , RUN_SECCOMP_MDWX , getuid ( ) , getgid ( ) , 0644 ) ; create_empty_file_as_root ( RUN_SECCOMP_PROTOCOL , 0644 ) ; if ( set_perms ( RUN_SECCOMP_PROTOCOL , getuid ( ) , getgid ( ) , 0644 ) ) errExit ( \"set_perms\" ) ; create_empty_file_as_root ( RUN_SECCOMP_POSTEXEC , 0644 ) ; if ( set_perms ( RUN_SECCOMP_POSTEXEC , getuid ( ) , getgid ( ) , 0644 ) ) errExit ( \"set_perms\" ) ; # endif } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> # ifdef HAVE_SECCOMP create_empty_dir_as_root ( RUN_SECCOMP_DIR , 0755 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 static void prefetch_dec ( void ) <S2SV_StartBug> { <S2SV_EndBug> prefetch_table ( ( const void * ) & dec_tables , sizeof ( dec_tables ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { dec_tables . counter_head ++ ; dec_tables . counter_tail ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14058\n\n```\nCWE-835 static int read_data ( void * opaque , uint8_t * buf , int buf_size ) { struct playlist * v = opaque ; HLSContext * c = v -> parent -> priv_data ; int ret , i ; <S2SV_StartBug> int just_opened = 0 ; <S2SV_EndBug> restart : if ( ! v -> needed ) return AVERROR_EOF ; if ( ! v -> input ) { int64_t reload_interval ; struct segment * seg ; if ( v -> ctx && v -> ctx -> nb_streams ) { v -> needed = 0 ; for ( i = 0 ; i < v -> n_main_streams ; i ++ ) { if ( v -> main_streams [ i ] -> discard < AVDISCARD_ALL ) { v -> needed = 1 ; break ; } } } if ( ! v -> needed ) { av_log ( v -> parent , AV_LOG_INFO , \"No<S2SV_blank>longer<S2SV_blank>receiving<S2SV_blank>playlist<S2SV_blank>%d\\\\n\" , v -> index ) ; return AVERROR_EOF ; } reload_interval = default_reload_interval ( v ) ; reload : <S2SV_StartBug> if ( ! v -> finished && <S2SV_EndBug> av_gettime_relative ( ) - v -> last_load_time >= reload_interval ) { if ( ( ret = parse_playlist ( c , v -> url , v , NULL ) ) < 0 ) { av_log ( v -> parent , AV_LOG_WARNING , \"Failed<S2SV_blank>to<S2SV_blank>reload<S2SV_blank>playlist<S2SV_blank>%d\\\\n\" , v -> index ) ; return ret ; } reload_interval = v -> target_duration / 2 ; } if ( v -> cur_seq_no < v -> start_seq_no ) { av_log ( NULL , AV_LOG_WARNING , \"skipping<S2SV_blank>%d<S2SV_blank>segments<S2SV_blank>ahead,<S2SV_blank>expired<S2SV_blank>from<S2SV_blank>playlists\\\\n\" , v -> start_seq_no - v -> cur_seq_no ) ; v -> cur_seq_no = v -> start_seq_no ; } if ( v -> cur_seq_no >= v -> start_seq_no + v -> n_segments ) { if ( v -> finished ) return AVERROR_EOF ; while ( av_gettime_relative ( ) - v -> last_load_time < reload_interval ) { if ( ff_check_interrupt ( c -> interrupt_callback ) ) return AVERROR_EXIT ; av_usleep ( 100 * 1000 ) ; } goto reload ; } seg = current_segment ( v ) ; ret = update_init_section ( v , seg ) ; if ( ret ) return ret ; ret = open_input ( c , v , seg ) ; if ( ret < 0 ) { if ( ff_check_interrupt ( c -> interrupt_callback ) ) return AVERROR_EXIT ; av_log ( v -> parent , AV_LOG_WARNING , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>segment<S2SV_blank>of<S2SV_blank>playlist<S2SV_blank>%d\\\\n\" , v -> index ) ; v -> cur_seq_no += 1 ; goto reload ; } just_opened = 1 ; } if ( v -> init_sec_buf_read_offset < v -> init_sec_data_len ) { int copy_size = FFMIN ( v -> init_sec_data_len - v -> init_sec_buf_read_offset , buf_size ) ; memcpy ( buf , v -> init_sec_buf , copy_size ) ; v -> init_sec_buf_read_offset += copy_size ; return copy_size ; } ret = read_from_url ( v , current_segment ( v ) , buf , buf_size , READ_NORMAL ) ; if ( ret > 0 ) { if ( just_opened && v -> is_id3_timestamped != 0 ) { intercept_id3 ( v , buf , buf_size , & ret ) ; } return ret ; } ff_format_io_close ( v -> parent , & v -> input ) ; v -> cur_seq_no ++ ; c -> cur_seq_no = v -> cur_seq_no ; goto restart ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int just_opened = 0 ; int reload_count <S2SV_ModStart> ; reload : reload_count ++ ; if ( reload_count > c -> max_reload ) return AVERROR_EOF ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2319\n\n```\nCWE-264 int hfsplus_rename_cat ( u32 cnid , struct inode * src_dir , struct qstr * src_name , struct inode * dst_dir , struct qstr * dst_name ) { struct super_block * sb = src_dir -> i_sb ; struct hfs_find_data src_fd , dst_fd ; hfsplus_cat_entry entry ; int entry_size , type ; int err ; dprint ( DBG_CAT_MOD , \"rename_cat:<S2SV_blank>%u<S2SV_blank>-<S2SV_blank>%lu,%s<S2SV_blank>-<S2SV_blank>%lu,%s\\\\n\" , cnid , src_dir -> i_ino , src_name -> name , dst_dir -> i_ino , dst_name -> name ) ; err = hfs_find_init ( HFSPLUS_SB ( sb ) -> cat_tree , & src_fd ) ; if ( err ) return err ; dst_fd = src_fd ; hfsplus_cat_build_key ( sb , src_fd . search_key , src_dir -> i_ino , src_name ) ; err = hfs_brec_find ( & src_fd ) ; if ( err ) goto out ; <S2SV_StartBug> hfs_bnode_read ( src_fd . bnode , & entry , src_fd . entryoffset , <S2SV_EndBug> src_fd . entrylength ) ; hfsplus_cat_build_key ( sb , dst_fd . search_key , dst_dir -> i_ino , dst_name ) ; err = hfs_brec_find ( & dst_fd ) ; if ( err != - ENOENT ) { if ( ! err ) err = - EEXIST ; goto out ; } err = hfs_brec_insert ( & dst_fd , & entry , src_fd . entrylength ) ; if ( err ) goto out ; dst_dir -> i_size ++ ; dst_dir -> i_mtime = dst_dir -> i_ctime = CURRENT_TIME_SEC ; hfsplus_cat_build_key ( sb , src_fd . search_key , src_dir -> i_ino , src_name ) ; err = hfs_brec_find ( & src_fd ) ; if ( err ) goto out ; err = hfs_brec_remove ( & src_fd ) ; if ( err ) goto out ; src_dir -> i_size -- ; src_dir -> i_mtime = src_dir -> i_ctime = CURRENT_TIME_SEC ; hfsplus_cat_build_key ( sb , src_fd . search_key , cnid , NULL ) ; err = hfs_brec_find ( & src_fd ) ; if ( err ) goto out ; type = hfs_bnode_read_u16 ( src_fd . bnode , src_fd . entryoffset ) ; err = hfs_brec_remove ( & src_fd ) ; if ( err ) goto out ; hfsplus_cat_build_key ( sb , dst_fd . search_key , cnid , NULL ) ; entry_size = hfsplus_fill_cat_thread ( sb , & entry , type , dst_dir -> i_ino , dst_name ) ; err = hfs_brec_find ( & dst_fd ) ; if ( err != - ENOENT ) { if ( ! err ) err = - EEXIST ; goto out ; } err = hfs_brec_insert ( & dst_fd , & entry , entry_size ) ; hfsplus_mark_inode_dirty ( dst_dir , HFSPLUS_I_CAT_DIRTY ) ; hfsplus_mark_inode_dirty ( src_dir , HFSPLUS_I_CAT_DIRTY ) ; out : hfs_bnode_put ( dst_fd . bnode ) ; hfs_find_exit ( & src_fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; if ( src_fd . entrylength > sizeof ( entry ) || src_fd . entrylength < 0 ) { err = - EIO ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999010\n\n```\nCWE-125 int ff_mms_asf_header_parser ( MMSContext * mms ) { uint8_t * p = mms -> asf_header ; uint8_t * end ; int flags , stream_id ; mms -> stream_num = 0 ; if ( mms -> asf_header_size < sizeof ( ff_asf_guid ) * 2 + 22 || memcmp ( p , ff_asf_header , sizeof ( ff_asf_guid ) ) ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(invalid<S2SV_blank>ASF<S2SV_blank>header,<S2SV_blank>size=%d)\\\\n\" , mms -> asf_header_size ) ; return AVERROR_INVALIDDATA ; } end = mms -> asf_header + mms -> asf_header_size ; p += sizeof ( ff_asf_guid ) + 14 ; while ( end - p >= sizeof ( ff_asf_guid ) + 8 ) { uint64_t chunksize ; if ( ! memcmp ( p , ff_asf_data_header , sizeof ( ff_asf_guid ) ) ) { chunksize = 50 ; } else { chunksize = AV_RL64 ( p + sizeof ( ff_asf_guid ) ) ; } if ( ! chunksize || chunksize > end - p ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(header<S2SV_blank>chunksize<S2SV_blank>%\" PRId64 \"<S2SV_blank>is<S2SV_blank>invalid)\\\\n\" , chunksize ) ; return AVERROR_INVALIDDATA ; } if ( ! memcmp ( p , ff_asf_file_header , sizeof ( ff_asf_guid ) ) ) { if ( end - p > sizeof ( ff_asf_guid ) * 2 + 68 ) { mms -> asf_packet_len = AV_RL32 ( p + sizeof ( ff_asf_guid ) * 2 + 64 ) ; if ( mms -> asf_packet_len <= 0 || mms -> asf_packet_len > sizeof ( mms -> in_buffer ) ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(too<S2SV_blank>large<S2SV_blank>pkt_len<S2SV_blank>%d)\\\\n\" , mms -> asf_packet_len ) ; return AVERROR_INVALIDDATA ; } } } else if ( ! memcmp ( p , ff_asf_stream_header , sizeof ( ff_asf_guid ) ) ) { <S2SV_StartBug> flags = AV_RL16 ( p + sizeof ( ff_asf_guid ) * 3 + 24 ) ; <S2SV_EndBug> stream_id = flags & 0x7F ; if ( mms -> stream_num < MMS_MAX_STREAMS && 46 + mms -> stream_num * 6 < sizeof ( mms -> out_buffer ) ) { mms -> streams = av_fast_realloc ( mms -> streams , & mms -> nb_streams_allocated , ( mms -> stream_num + 1 ) * sizeof ( MMSStream ) ) ; if ( ! mms -> streams ) return AVERROR ( ENOMEM ) ; mms -> streams [ mms -> stream_num ] . id = stream_id ; mms -> stream_num ++ ; } else { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(too<S2SV_blank>many<S2SV_blank>A/V<S2SV_blank>streams)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } <S2SV_StartBug> } else if ( ! memcmp ( p , ff_asf_ext_stream_header , sizeof ( ff_asf_guid ) ) ) { <S2SV_EndBug> if ( end - p >= 88 ) { int stream_count = AV_RL16 ( p + 84 ) , ext_len_count = AV_RL16 ( p + 86 ) ; uint64_t skip_bytes = 88 ; while ( stream_count -- ) { if ( end - p < skip_bytes + 4 ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(next<S2SV_blank>stream<S2SV_blank>name<S2SV_blank>length<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>buffer)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } skip_bytes += 4 + AV_RL16 ( p + skip_bytes + 2 ) ; } while ( ext_len_count -- ) { if ( end - p < skip_bytes + 22 ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(next<S2SV_blank>extension<S2SV_blank>system<S2SV_blank>info<S2SV_blank>length<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>buffer)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } skip_bytes += 22 + AV_RL32 ( p + skip_bytes + 18 ) ; } if ( end - p < skip_bytes ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(the<S2SV_blank>last<S2SV_blank>extension<S2SV_blank>system<S2SV_blank>info<S2SV_blank>length<S2SV_blank>is<S2SV_blank>invalid)\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( chunksize - skip_bytes > 24 ) chunksize = skip_bytes ; } } else if ( ! memcmp ( p , ff_asf_head1_guid , sizeof ( ff_asf_guid ) ) ) { chunksize = 46 ; <S2SV_StartBug> } <S2SV_EndBug> p += chunksize ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( end - p >= ( sizeof ( ff_asf_guid ) * 3 + 26 ) ) { <S2SV_ModStart> ; } } } <S2SV_ModStart> = 46 ; if ( chunksize > end - p ) { av_log ( NULL , AV_LOG_ERROR , \"Corrupt<S2SV_blank>stream<S2SV_blank>(header<S2SV_blank>chunksize<S2SV_blank>%\" PRId64 \"<S2SV_blank>is<S2SV_blank>invalid)\\\\n\" , chunksize ) ; return AVERROR_INVALIDDATA ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2706\n\n```\nCWE-362 struct sta_info * sta_info_alloc ( struct ieee80211_sub_if_data * sdata , const u8 * addr , gfp_t gfp ) { struct ieee80211_local * local = sdata -> local ; struct sta_info * sta ; struct timespec uptime ; struct ieee80211_tx_latency_bin_ranges * tx_latency ; int i ; sta = kzalloc ( sizeof ( * sta ) + local -> hw . sta_data_size , gfp ) ; if ( ! sta ) return NULL ; rcu_read_lock ( ) ; tx_latency = rcu_dereference ( local -> tx_latency ) ; if ( tx_latency ) { sta -> tx_lat = kzalloc ( IEEE80211_NUM_TIDS * sizeof ( struct ieee80211_tx_latency_stat ) , GFP_ATOMIC ) ; if ( ! sta -> tx_lat ) { rcu_read_unlock ( ) ; goto free ; } if ( tx_latency -> n_ranges ) { for ( i = 0 ; i < IEEE80211_NUM_TIDS ; i ++ ) { sta -> tx_lat [ i ] . bin_count = tx_latency -> n_ranges + 1 ; sta -> tx_lat [ i ] . bins = kcalloc ( sta -> tx_lat [ i ] . bin_count , sizeof ( u32 ) , GFP_ATOMIC ) ; if ( ! sta -> tx_lat [ i ] . bins ) { rcu_read_unlock ( ) ; goto free ; } } } } rcu_read_unlock ( ) ; <S2SV_StartBug> spin_lock_init ( & sta -> lock ) ; <S2SV_EndBug> INIT_WORK ( & sta -> drv_unblock_wk , sta_unblock ) ; INIT_WORK ( & sta -> ampdu_mlme . work , ieee80211_ba_session_work ) ; mutex_init ( & sta -> ampdu_mlme . mtx ) ; # ifdef CONFIG_MAC80211_MESH if ( ieee80211_vif_is_mesh ( & sdata -> vif ) && ! sdata -> u . mesh . user_mpm ) init_timer ( & sta -> plink_timer ) ; sta -> nonpeer_pm = NL80211_MESH_POWER_ACTIVE ; # endif memcpy ( sta -> sta . addr , addr , ETH_ALEN ) ; sta -> local = local ; sta -> sdata = sdata ; sta -> last_rx = jiffies ; sta -> sta_state = IEEE80211_STA_NONE ; do_posix_clock_monotonic_gettime ( & uptime ) ; sta -> last_connected = uptime . tv_sec ; ewma_init ( & sta -> avg_signal , 1024 , 8 ) ; for ( i = 0 ; i < ARRAY_SIZE ( sta -> chain_signal_avg ) ; i ++ ) ewma_init ( & sta -> chain_signal_avg [ i ] , 1024 , 8 ) ; if ( sta_prepare_rate_control ( local , sta , gfp ) ) goto free ; for ( i = 0 ; i < IEEE80211_NUM_TIDS ; i ++ ) { sta -> timer_to_tid [ i ] = i ; } for ( i = 0 ; i < IEEE80211_NUM_ACS ; i ++ ) { skb_queue_head_init ( & sta -> ps_tx_buf [ i ] ) ; skb_queue_head_init ( & sta -> tx_filtered [ i ] ) ; } for ( i = 0 ; i < IEEE80211_NUM_TIDS ; i ++ ) sta -> last_seq_ctrl [ i ] = cpu_to_le16 ( USHRT_MAX ) ; sta -> sta . smps_mode = IEEE80211_SMPS_OFF ; if ( sdata -> vif . type == NL80211_IFTYPE_AP || sdata -> vif . type == NL80211_IFTYPE_AP_VLAN ) { struct ieee80211_supported_band * sband = local -> hw . wiphy -> bands [ ieee80211_get_sdata_band ( sdata ) ] ; u8 smps = ( sband -> ht_cap . cap & IEEE80211_HT_CAP_SM_PS ) >> IEEE80211_HT_CAP_SM_PS_SHIFT ; switch ( smps ) { case WLAN_HT_SMPS_CONTROL_DISABLED : sta -> known_smps_mode = IEEE80211_SMPS_OFF ; break ; case WLAN_HT_SMPS_CONTROL_STATIC : sta -> known_smps_mode = IEEE80211_SMPS_STATIC ; break ; case WLAN_HT_SMPS_CONTROL_DYNAMIC : sta -> known_smps_mode = IEEE80211_SMPS_DYNAMIC ; break ; default : WARN_ON ( 1 ) ; } } sta_dbg ( sdata , \"Allocated<S2SV_blank>STA<S2SV_blank>%pM\\\\n\" , sta -> sta . addr ) ; return sta ; free : if ( sta -> tx_lat ) { for ( i = 0 ; i < IEEE80211_NUM_TIDS ; i ++ ) kfree ( sta -> tx_lat [ i ] . bins ) ; kfree ( sta -> tx_lat ) ; } kfree ( sta ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sta -> lock ) ; spin_lock_init ( & sta -> ps_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15473\n\n```\nCWE-362 static int userauth_hostbased ( struct ssh * ssh ) { Authctxt * authctxt = ssh -> authctxt ; struct sshbuf * b ; struct sshkey * key = NULL ; char * pkalg , * cuser , * chost ; u_char * pkblob , * sig ; size_t alen , blen , slen ; int r , pktype , authenticated = 0 ; <S2SV_StartBug> if ( ! authctxt -> valid ) { <S2SV_EndBug> debug2 ( \"%s:<S2SV_blank>disabled<S2SV_blank>because<S2SV_blank>of<S2SV_blank>invalid<S2SV_blank>user\" , __func__ ) ; return 0 ; } if ( ( r = sshpkt_get_cstring ( ssh , & pkalg , & alen ) ) != 0 || ( r = sshpkt_get_string ( ssh , & pkblob , & blen ) ) != 0 || ( r = sshpkt_get_cstring ( ssh , & chost , NULL ) ) != 0 || ( r = sshpkt_get_cstring ( ssh , & cuser , NULL ) ) != 0 || ( r = sshpkt_get_string ( ssh , & sig , & slen ) ) != 0 ) fatal ( \"%s:<S2SV_blank>packet<S2SV_blank>parsing:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; debug ( \"%s:<S2SV_blank>cuser<S2SV_blank>%s<S2SV_blank>chost<S2SV_blank>%s<S2SV_blank>pkalg<S2SV_blank>%s<S2SV_blank>slen<S2SV_blank>%zu\" , __func__ , cuser , chost , pkalg , slen ) ; # ifdef DEBUG_PK debug ( \"signature:\" ) ; sshbuf_dump_data ( sig , siglen , stderr ) ; # endif pktype = sshkey_type_from_name ( pkalg ) ; if ( pktype == KEY_UNSPEC ) { logit ( \"%s:<S2SV_blank>unsupported<S2SV_blank>public<S2SV_blank>key<S2SV_blank>algorithm:<S2SV_blank>%s\" , __func__ , pkalg ) ; goto done ; } if ( ( r = sshkey_from_blob ( pkblob , blen , & key ) ) != 0 ) { error ( \"%s:<S2SV_blank>key_from_blob:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; goto done ; } if ( key == NULL ) { error ( \"%s:<S2SV_blank>cannot<S2SV_blank>decode<S2SV_blank>key:<S2SV_blank>%s\" , __func__ , pkalg ) ; goto done ; } if ( key -> type != pktype ) { error ( \"%s:<S2SV_blank>type<S2SV_blank>mismatch<S2SV_blank>for<S2SV_blank>decoded<S2SV_blank>key<S2SV_blank>\" \"(received<S2SV_blank>%d,<S2SV_blank>expected<S2SV_blank>%d)\" , __func__ , key -> type , pktype ) ; goto done ; } if ( sshkey_type_plain ( key -> type ) == KEY_RSA && ( ssh -> compat & SSH_BUG_RSASIGMD5 ) != 0 ) { error ( \"Refusing<S2SV_blank>RSA<S2SV_blank>key<S2SV_blank>because<S2SV_blank>peer<S2SV_blank>uses<S2SV_blank>unsafe<S2SV_blank>\" \"signature<S2SV_blank>format\" ) ; goto done ; } if ( match_pattern_list ( pkalg , options . hostbased_key_types , 0 ) != 1 ) { logit ( \"%s:<S2SV_blank>key<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>in<S2SV_blank>HostbasedAcceptedKeyTypes\" , __func__ , sshkey_type ( key ) ) ; goto done ; } <S2SV_StartBug> if ( ( b = sshbuf_new ( ) ) == NULL ) <S2SV_EndBug> fatal ( \"%s:<S2SV_blank>sshbuf_new<S2SV_blank>failed\" , __func__ ) ; if ( ( r = sshbuf_put_string ( b , session_id2 , session_id2_len ) ) != 0 || ( r = sshbuf_put_u8 ( b , SSH2_MSG_USERAUTH_REQUEST ) ) != 0 || ( r = sshbuf_put_cstring ( b , authctxt -> user ) ) != 0 || ( r = sshbuf_put_cstring ( b , authctxt -> service ) ) != 0 || ( r = sshbuf_put_cstring ( b , \"hostbased\" ) ) != 0 || ( r = sshbuf_put_string ( b , pkalg , alen ) ) != 0 || ( r = sshbuf_put_string ( b , pkblob , blen ) ) != 0 || ( r = sshbuf_put_cstring ( b , chost ) ) != 0 || ( r = sshbuf_put_cstring ( b , cuser ) ) != 0 ) fatal ( \"%s:<S2SV_blank>buffer<S2SV_blank>error:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; # ifdef DEBUG_PK sshbuf_dump ( b , stderr ) ; # endif auth2_record_info ( authctxt , \"client<S2SV_blank>user<S2SV_blank>\\\\\"%.100s\\\\\",<S2SV_blank>client<S2SV_blank>host<S2SV_blank>\\\\\"%.100s\\\\\"\" , cuser , chost ) ; authenticated = 0 ; if ( PRIVSEP ( hostbased_key_allowed ( authctxt -> pw , cuser , chost , key ) ) && PRIVSEP ( sshkey_verify ( key , sig , slen , sshbuf_ptr ( b ) , sshbuf_len ( b ) , pkalg , ssh -> compat ) ) == 0 ) authenticated = 1 ; auth2_record_key ( authctxt , authenticated , key ) ; sshbuf_free ( b ) ; done : debug2 ( \"%s:<S2SV_blank>authenticated<S2SV_blank>%d\" , __func__ , authenticated ) ; sshkey_free ( key ) ; free ( pkalg ) ; free ( pkblob ) ; free ( cuser ) ; free ( chost ) ; free ( sig ) ; return authenticated ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( ( <S2SV_ModStart> } if ( ! authctxt -> valid || authctxt -> user == NULL ) { debug2 ( \"%s:<S2SV_blank>disabled<S2SV_blank>because<S2SV_blank>of<S2SV_blank>invalid<S2SV_blank>user\" , __func__ ) ; goto done ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imageconvolution ) { zval * SIM , * hash_matrix ; zval * * var = NULL , * * var2 = NULL ; gdImagePtr im_src = NULL ; double div , offset ; int nelem , i , j , res ; float matrix [ 3 ] [ 3 ] = { { 0 , 0 , 0 } , { 0 , 0 , 0 } , { 0 , 0 , 0 } } ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"radd\" , & SIM , & hash_matrix , & div , & offset ) == FAILURE ) { RETURN_FALSE ; } ZEND_FETCH_RESOURCE ( im_src , gdImagePtr , & SIM , - 1 , \"Image\" , le_gd ) ; nelem = zend_hash_num_elements ( Z_ARRVAL_P ( hash_matrix ) ) ; if ( nelem != 3 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>3x3<S2SV_blank>array\" ) ; RETURN_FALSE ; } for ( i = 0 ; i < 3 ; i ++ ) { if ( zend_hash_index_find ( Z_ARRVAL_P ( hash_matrix ) , ( i ) , ( void * * ) & var ) == SUCCESS && Z_TYPE_PP ( var ) == IS_ARRAY ) { if ( Z_TYPE_PP ( var ) != IS_ARRAY || zend_hash_num_elements ( Z_ARRVAL_PP ( var ) ) != 3 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>3x3<S2SV_blank>array\" ) ; RETURN_FALSE ; } for ( j = 0 ; j < 3 ; j ++ ) { if ( zend_hash_index_find ( Z_ARRVAL_PP ( var ) , ( j ) , ( void * * ) & var2 ) == SUCCESS ) { <S2SV_StartBug> SEPARATE_ZVAL ( var2 ) ; <S2SV_EndBug> <S2SV_StartBug> convert_to_double ( * var2 ) ; <S2SV_EndBug> <S2SV_StartBug> matrix [ i ] [ j ] = ( float ) Z_DVAL_PP ( var2 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>a<S2SV_blank>3x3<S2SV_blank>matrix\" ) ; <S2SV_EndBug> RETURN_FALSE ; } } <S2SV_StartBug> } <S2SV_EndBug> } res = gdImageConvolution ( im_src , matrix , ( float ) div , ( float ) offset ) ; if ( res ) { RETURN_TRUE ; } else { RETURN_FALSE ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SUCCESS ) { if ( Z_TYPE_PP <S2SV_ModEnd> ( var2 ) <S2SV_ModStart> ( var2 ) != IS_DOUBLE ) { zval dval ; dval = * * var ; zval_copy_ctor ( & dval ) <S2SV_ModStart> ; convert_to_double ( & dval ) ; matrix [ i ] [ j ] = ( float ) Z_DVAL ( dval ) ; } else { matrix [ i ] [ j ] = ( float ) Z_DVAL_PP ( <S2SV_ModEnd> var2 ) ; <S2SV_ModStart> var2 ) ; } } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"You<S2SV_blank>must<S2SV_blank>have<S2SV_blank>a<S2SV_blank>3x3<S2SV_blank>matrix\" ) ; RETURN_FALSE ; } } } } res = gdImageConvolution ( im_src , matrix , <S2SV_ModEnd> ( float ) <S2SV_ModStart> ( float ) div , ( float ) offset ) ; if ( res ) { RETURN_TRUE <S2SV_ModEnd> ; } else <S2SV_ModStart> } else { <S2SV_ModEnd> RETURN_FALSE ; } <S2SV_ModStart> ; } } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10147\n\n```\nCWE-476 <S2SV_StartBug> static inline void mcryptd_check_internal ( struct rtattr * * tb , u32 * type , <S2SV_EndBug> u32 * mask ) { struct crypto_attr_type * algt ; algt = crypto_get_attr_type ( tb ) ; if ( IS_ERR ( algt ) ) <S2SV_StartBug> return ; <S2SV_EndBug> <S2SV_StartBug> if ( ( algt -> type & CRYPTO_ALG_INTERNAL ) ) <S2SV_EndBug> * type |= CRYPTO_ALG_INTERNAL ; <S2SV_StartBug> if ( ( algt -> mask & CRYPTO_ALG_INTERNAL ) ) <S2SV_EndBug> * mask |= CRYPTO_ALG_INTERNAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static inline bool <S2SV_ModEnd> mcryptd_check_internal ( struct <S2SV_ModStart> ) ) return false ; * type |= <S2SV_ModEnd> algt -> type <S2SV_ModStart> type & CRYPTO_ALG_INTERNAL ; * mask |= algt -> mask & <S2SV_ModEnd> CRYPTO_ALG_INTERNAL ; if <S2SV_ModStart> ; if ( * type & * <S2SV_ModEnd> mask & CRYPTO_ALG_INTERNAL <S2SV_ModStart> & CRYPTO_ALG_INTERNAL ) return true ; else return false <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void encode_frame_internal ( VP9_COMP * cpi ) { SPEED_FEATURES * const sf = & cpi -> sf ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> VP9_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> xd -> mi = cm -> mi_grid_visible ; <S2SV_EndBug> xd -> mi [ 0 ] = cm -> mi ; <S2SV_StartBug> vp9_zero ( cm -> counts ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_zero ( cpi -> coef_counts ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_zero ( cpi -> tx_stepdown_count ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_zero ( cpi -> rd_comp_pred_diff ) ; <S2SV_EndBug> vp9_zero ( cpi -> rd_filter_diff ) ; vp9_zero ( cpi -> rd_tx_select_diff ) ; vp9_zero ( cpi -> rd_tx_select_threshes ) ; cm -> tx_mode = select_tx_mode ( cpi ) ; cpi -> mb . e_mbd . lossless = cm -> base_qindex == 0 && cm -> y_dc_delta_q == 0 && cm -> uv_dc_delta_q == 0 && cm -> uv_ac_delta_q == 0 ; <S2SV_StartBug> switch_lossless_mode ( cpi , cpi -> mb . e_mbd . lossless ) ; <S2SV_EndBug> vp9_frame_init_quantizer ( cpi ) ; vp9_initialize_rd_consts ( cpi ) ; <S2SV_StartBug> vp9_initialize_me_consts ( cpi , cm -> base_qindex ) ; <S2SV_EndBug> init_encode_frame_mb_context ( cpi ) ; <S2SV_StartBug> if ( cpi -> oxcf . tuning == VP8_TUNE_SSIM ) <S2SV_EndBug> build_activity_map ( cpi ) ; <S2SV_StartBug> cm -> prev_mi = get_prev_mi ( cm ) ; <S2SV_EndBug> if ( sf -> use_nonrd_pick_mode ) { int i ; struct macroblock_plane * const p = x -> plane ; struct macroblockd_plane * const pd = xd -> plane ; <S2SV_StartBug> PICK_MODE_CONTEXT * ctx = & cpi -> mb . sb64_context ; <S2SV_EndBug> for ( i = 0 ; i < MAX_MB_PLANE ; ++ i ) { p [ i ] . coeff = ctx -> coeff_pbuf [ i ] [ 0 ] ; p [ i ] . qcoeff = ctx -> qcoeff_pbuf [ i ] [ 0 ] ; pd [ i ] . dqcoeff = ctx -> dqcoeff_pbuf [ i ] [ 0 ] ; p [ i ] . eobs = ctx -> eobs_pbuf [ i ] [ 0 ] ; } vp9_zero ( x -> zcoeff_blk ) ; <S2SV_StartBug> if ( cpi -> sf . partition_search_type == SOURCE_VAR_BASED_PARTITION && <S2SV_EndBug> cm -> current_video_frame > 0 ) { int check_freq = cpi -> sf . search_type_check_frequency ; if ( ( cm -> current_video_frame - 1 ) % check_freq == 0 ) { cpi -> use_large_partition_rate = 0 ; } if ( ( cm -> current_video_frame - 1 ) % check_freq == 1 ) { const int mbs_in_b32x32 = 1 << ( ( b_width_log2_lookup [ BLOCK_32X32 ] - b_width_log2_lookup [ BLOCK_16X16 ] ) + ( b_height_log2_lookup [ BLOCK_32X32 ] - b_height_log2_lookup [ BLOCK_16X16 ] ) ) ; cpi -> use_large_partition_rate = cpi -> use_large_partition_rate * 100 * mbs_in_b32x32 / cm -> MBs ; } if ( ( cm -> current_video_frame - 1 ) % check_freq >= 1 ) { if ( cpi -> use_large_partition_rate < 15 ) cpi -> sf . partition_search_type = FIXED_PARTITION ; } } } { struct vpx_usec_timer emr_timer ; vpx_usec_timer_start ( & emr_timer ) ; <S2SV_StartBug> { <S2SV_EndBug> int tile_col , tile_row ; TOKENEXTRA * tp = cpi -> tok ; <S2SV_StartBug> const int tile_cols = 1 << cm -> log2_tile_cols ; <S2SV_EndBug> const int tile_rows = 1 << cm -> log2_tile_rows ; for ( tile_row = 0 ; tile_row < tile_rows ; tile_row ++ ) { for ( tile_col = 0 ; tile_col < tile_cols ; tile_col ++ ) { TileInfo tile ; TOKENEXTRA * tp_old = tp ; int mi_row ; vp9_tile_init ( & tile , cm , tile_row , tile_col ) ; for ( mi_row = tile . mi_row_start ; mi_row < tile . mi_row_end ; mi_row += MI_BLOCK_SIZE ) { if ( sf -> use_nonrd_pick_mode && cm -> frame_type != KEY_FRAME ) encode_nonrd_sb_row ( cpi , & tile , mi_row , & tp ) ; else <S2SV_StartBug> encode_rd_sb_row ( cpi , & tile , mi_row , & tp ) ; <S2SV_EndBug> } cpi -> tok_count [ tile_row ] [ tile_col ] = ( unsigned int ) ( tp - tp_old ) ; assert ( tp - cpi -> tok <= get_token_alloc ( cm -> mb_rows , cm -> mb_cols ) ) ; } } } vpx_usec_timer_mark ( & emr_timer ) ; cpi -> time_encode_sb_row += vpx_usec_timer_elapsed ( & emr_timer ) ; } <S2SV_StartBug> if ( sf -> skip_encode_sb ) { <S2SV_EndBug> int j ; unsigned int intra_count = 0 , inter_count = 0 ; for ( j = 0 ; j < INTRA_INTER_CONTEXTS ; ++ j ) { intra_count += cm -> counts . intra_inter [ j ] [ 0 ] ; inter_count += cm -> counts . intra_inter [ j ] [ 1 ] ; } sf -> skip_encode_frame = ( intra_count << 2 ) < inter_count && cm -> frame_type != KEY_FRAME && cm -> show_frame ; } else { sf -> skip_encode_frame = 0 ; } # if 0 cpi -> last_frame_distortion = cpi -> frame_distortion ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sf ; ThreadData * const td = & cpi -> td ; <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> -> e_mbd ; RD_COUNTS * const rdc = & cpi -> td . rd_counts ; <S2SV_ModStart> ; vp9_zero ( * td <S2SV_ModEnd> -> counts ) <S2SV_ModStart> ; vp9_zero ( rdc <S2SV_ModEnd> -> coef_counts ) <S2SV_ModStart> ; vp9_zero ( rdc -> comp_pred_diff <S2SV_ModEnd> ) ; vp9_zero <S2SV_ModStart> ; vp9_zero ( rdc -> filter_diff ) ; xd -> <S2SV_ModEnd> lossless = cm <S2SV_ModStart> == 0 ; # if CONFIG_VP9_HIGHBITDEPTH if ( cm -> use_highbitdepth ) x -> fwd_txm4x4 = xd -> lossless ? vp9_highbd_fwht4x4 : vpx_highbd_fdct4x4 ; else x -> fwd_txm4x4 = xd -> lossless ? vp9_fwht4x4 : vpx_fdct4x4 ; x -> highbd_itxm_add = xd -> lossless ? vp9_highbd_iwht4x4_add : vp9_highbd_idct4x4_add ; # else x -> fwd_txm4x4 = xd -> lossless ? vp9_fwht4x4 : vpx_fdct4x4 ; # endif x -> itxm_add = xd -> lossless ? vp9_iwht4x4_add : vp9_idct4x4_add ; if ( xd -> lossless ) x -> optimize = 0 ; cm -> tx_mode = select_tx_mode <S2SV_ModEnd> ( cpi , <S2SV_ModStart> ( cpi , xd <S2SV_ModEnd> ) ; vp9_frame_init_quantizer <S2SV_ModStart> ( cpi , x , <S2SV_ModStart> cpi ) ; cm -> use_prev_frame_mvs = ! cm -> error_resilient_mode && cm -> width == cm -> last_width && cm -> height == cm -> last_height && ! cm -> intra_only && cm -> last_show_frame <S2SV_ModEnd> ; cm -> <S2SV_ModStart> -> prev_mi = cm -> use_prev_frame_mvs ? cm -> prev_mip + cm -> mi_stride + 1 : NULL ; x -> quant_fp = cpi -> sf . use_quant_fp ; vp9_zero ( x -> skip_txfm <S2SV_ModEnd> ) ; if <S2SV_ModStart> & cpi -> td . pc_root -> none <S2SV_ModEnd> ; for ( <S2SV_ModStart> ; if ( cm -> frame_type != KEY_FRAME && cpi -> rc . frames_since_golden == 0 && ! cpi -> use_svc ) cpi -> ref_frame_flags &= ( ~ VP9_GOLD_FLAG ) ; if ( sf -> <S2SV_ModEnd> partition_search_type == SOURCE_VAR_BASED_PARTITION <S2SV_ModStart> partition_search_type == SOURCE_VAR_BASED_PARTITION ) source_var_based_partition_search_method ( cpi ) ; <S2SV_ModEnd> } { struct <S2SV_ModStart> emr_timer ) ; # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats ) { input_fpmb_stats ( & cpi -> twopass . firstpass_mb_stats , cm , & cpi -> twopass . this_frame_mb_stats ) ; } # endif if ( MIN ( cpi -> oxcf . max_threads , <S2SV_ModEnd> 1 << cm <S2SV_ModStart> cm -> log2_tile_cols ) > 1 ) vp9_encode_tiles_mt ( cpi <S2SV_ModEnd> ) ; else <S2SV_ModStart> ) ; else encode_tiles ( cpi ) ; <S2SV_ModEnd> vpx_usec_timer_mark ( & <S2SV_ModStart> ) ; } sf -> skip_encode_frame = sf -> skip_encode_sb ? get_skip_encode_frame ( cm , td ) : 0 ; <S2SV_ModEnd> # if 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 int yr_re_exec ( uint8_t * re_code , uint8_t * input_data , <S2SV_StartBug> size_t input_size , <S2SV_EndBug> int flags , RE_MATCH_CALLBACK_FUNC callback , void * callback_args ) { uint8_t * ip ; uint8_t * input ; uint8_t mask ; uint8_t value ; RE_FIBER_LIST fibers ; RE_THREAD_STORAGE * storage ; RE_FIBER * fiber ; RE_FIBER * next_fiber ; int error ; int bytes_matched ; int max_bytes_matched ; int match ; int character_size ; int input_incr ; int kill ; int action ; int result = - 1 ; # define ACTION_NONE 0 # define ACTION_CONTINUE 1 # define ACTION_KILL 2 # define ACTION_KILL_TAIL 3 <S2SV_StartBug> # define prolog if ( bytes_matched >= max_bytes_matched ) { action = ACTION_KILL ; break ; } <S2SV_EndBug> <S2SV_StartBug> # define fail_if_error ( e ) switch ( e ) { case ERROR_INSUFFICIENT_MEMORY : return - 2 ; case ERROR_TOO_MANY_RE_FIBERS : return - 4 ; } <S2SV_EndBug> if ( _yr_re_alloc_storage ( & storage ) != ERROR_SUCCESS ) return - 2 ; if ( flags & RE_FLAGS_WIDE ) character_size = 2 ; else character_size = 1 ; input = input_data ; input_incr = character_size ; if ( flags & RE_FLAGS_BACKWARDS ) { <S2SV_StartBug> input -= character_size ; <S2SV_EndBug> input_incr = - input_incr ; } <S2SV_StartBug> max_bytes_matched = ( int ) yr_min ( input_size , RE_SCAN_LIMIT ) ; <S2SV_EndBug> max_bytes_matched = max_bytes_matched - max_bytes_matched % character_size ; bytes_matched = 0 ; error = _yr_re_fiber_create ( & storage -> fiber_pool , & fiber ) ; fail_if_error ( error ) ; fiber -> ip = re_code ; fibers . head = fiber ; fibers . tail = fiber ; error = _yr_re_fiber_sync ( & fibers , & storage -> fiber_pool , fiber ) ; fail_if_error ( error ) ; while ( fibers . head != NULL ) { fiber = fibers . head ; while ( fiber != NULL ) { ip = fiber -> ip ; action = ACTION_NONE ; switch ( * ip ) { case RE_OPCODE_ANY : prolog ; match = ( flags & RE_FLAGS_DOT_ALL ) || ( * input != 0x0A ) ; action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 1 ; break ; case RE_OPCODE_REPEAT_ANY_GREEDY : case RE_OPCODE_REPEAT_ANY_UNGREEDY : prolog ; match = ( flags & RE_FLAGS_DOT_ALL ) || ( * input != 0x0A ) ; action = match ? ACTION_NONE : ACTION_KILL ; break ; case RE_OPCODE_LITERAL : prolog ; if ( flags & RE_FLAGS_NO_CASE ) match = yr_lowercase [ * input ] == yr_lowercase [ * ( ip + 1 ) ] ; else match = ( * input == * ( ip + 1 ) ) ; action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 2 ; break ; case RE_OPCODE_MASKED_LITERAL : prolog ; value = * ( int16_t * ) ( ip + 1 ) & 0xFF ; mask = * ( int16_t * ) ( ip + 1 ) >> 8 ; match = ( ( * input & mask ) == value ) ; action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 3 ; break ; case RE_OPCODE_CLASS : prolog ; match = CHAR_IN_CLASS ( * input , ip + 1 ) ; if ( ! match && ( flags & RE_FLAGS_NO_CASE ) ) match = CHAR_IN_CLASS ( yr_altercase [ * input ] , ip + 1 ) ; action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 33 ; break ; case RE_OPCODE_WORD_CHAR : prolog ; <S2SV_StartBug> match = IS_WORD_CHAR ( * input ) ; <S2SV_EndBug> action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 1 ; break ; case RE_OPCODE_NON_WORD_CHAR : prolog ; <S2SV_StartBug> match = ! IS_WORD_CHAR ( * input ) ; <S2SV_EndBug> action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 1 ; break ; case RE_OPCODE_SPACE : case RE_OPCODE_NON_SPACE : prolog ; switch ( * input ) { case '<S2SV_blank>' : case '\\\\t' : case '\\\\r' : case '\\\\n' : case '\\\\v' : case '\\\\f' : match = TRUE ; break ; default : match = FALSE ; } if ( * ip == RE_OPCODE_NON_SPACE ) match = ! match ; action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 1 ; break ; case RE_OPCODE_DIGIT : prolog ; match = isdigit ( * input ) ; action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 1 ; break ; case RE_OPCODE_NON_DIGIT : prolog ; match = ! isdigit ( * input ) ; action = match ? ACTION_NONE : ACTION_KILL ; fiber -> ip += 1 ; break ; case RE_OPCODE_WORD_BOUNDARY : case RE_OPCODE_NON_WORD_BOUNDARY : if ( bytes_matched == 0 && <S2SV_StartBug> ! ( flags & RE_FLAGS_NOT_AT_START ) && <S2SV_EndBug> ! ( flags & RE_FLAGS_BACKWARDS ) ) <S2SV_StartBug> match = TRUE ; <S2SV_EndBug> else if ( bytes_matched >= max_bytes_matched ) <S2SV_StartBug> match = TRUE ; <S2SV_EndBug> <S2SV_StartBug> else if ( IS_WORD_CHAR ( * ( input - input_incr ) ) != IS_WORD_CHAR ( * input ) ) <S2SV_EndBug> match = TRUE ; else match = FALSE ; if ( * ip == RE_OPCODE_NON_WORD_BOUNDARY ) match = ! match ; action = match ? ACTION_CONTINUE : ACTION_KILL ; fiber -> ip += 1 ; break ; case RE_OPCODE_MATCH_AT_START : if ( flags & RE_FLAGS_BACKWARDS ) <S2SV_StartBug> kill = input_size > ( size_t ) bytes_matched ; <S2SV_EndBug> else <S2SV_StartBug> kill = ( flags & RE_FLAGS_NOT_AT_START ) || ( bytes_matched != 0 ) ; <S2SV_EndBug> action = kill ? ACTION_KILL : ACTION_CONTINUE ; fiber -> ip += 1 ; break ; case RE_OPCODE_MATCH_AT_END : kill = flags & RE_FLAGS_BACKWARDS || <S2SV_StartBug> input_size > ( size_t ) bytes_matched ; <S2SV_EndBug> action = kill ? ACTION_KILL : ACTION_CONTINUE ; fiber -> ip += 1 ; break ; case RE_OPCODE_MATCH : result = bytes_matched ; if ( flags & RE_FLAGS_EXHAUSTIVE ) { if ( callback != NULL ) { int cb_result ; if ( flags & RE_FLAGS_BACKWARDS ) cb_result = callback ( input + character_size , bytes_matched , flags , callback_args ) ; else cb_result = callback ( input_data , bytes_matched , flags , callback_args ) ; switch ( cb_result ) { case ERROR_INSUFFICIENT_MEMORY : return - 2 ; case ERROR_TOO_MANY_MATCHES : return - 3 ; default : if ( cb_result != ERROR_SUCCESS ) return - 4 ; } } action = ACTION_KILL ; } else { action = ACTION_KILL_TAIL ; } break ; default : assert ( FALSE ) ; } switch ( action ) { case ACTION_KILL : fiber = _yr_re_fiber_kill ( & fibers , & storage -> fiber_pool , fiber ) ; break ; case ACTION_KILL_TAIL : _yr_re_fiber_kill_tail ( & fibers , & storage -> fiber_pool , fiber ) ; fiber = NULL ; break ; case ACTION_CONTINUE : error = _yr_re_fiber_sync ( & fibers , & storage -> fiber_pool , fiber ) ; fail_if_error ( error ) ; break ; default : next_fiber = fiber -> next ; error = _yr_re_fiber_sync ( & fibers , & storage -> fiber_pool , fiber ) ; fail_if_error ( error ) ; fiber = next_fiber ; } <S2SV_StartBug> } <S2SV_EndBug> if ( flags & RE_FLAGS_WIDE && bytes_matched < max_bytes_matched && * ( input + 1 ) != 0 ) { _yr_re_fiber_kill_all ( & fibers , & storage -> fiber_pool ) ; } input += input_incr ; bytes_matched += character_size ; if ( flags & RE_FLAGS_SCAN && bytes_matched < max_bytes_matched ) { error = _yr_re_fiber_create ( & storage -> fiber_pool , & fiber ) ; fail_if_error ( error ) ; fiber -> ip = re_code ; _yr_re_fiber_append ( & fibers , fiber ) ; error = _yr_re_fiber_sync ( & fibers , & storage -> fiber_pool , fiber ) ; fail_if_error ( error ) ; } } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> input_data , size_t input_forwards_size , size_t input_backwards_size <S2SV_ModEnd> , int flags <S2SV_ModStart> # define prolog { if ( <S2SV_ModEnd> ( bytes_matched >= <S2SV_ModStart> >= max_bytes_matched ) || ( character_size == 2 && * ( input + 1 ) != 0 ) ) { action = ACTION_KILL ; break ; } <S2SV_ModEnd> } # define <S2SV_ModStart> ( e ) { <S2SV_ModStart> 4 ; } } <S2SV_ModStart> RE_FLAGS_BACKWARDS ) { max_bytes_matched = ( int ) yr_min ( input_backwards_size , RE_SCAN_LIMIT ) ; <S2SV_ModStart> input_incr ; } else { <S2SV_ModStart> ) yr_min ( input_forwards_size <S2SV_ModEnd> , RE_SCAN_LIMIT ) <S2SV_ModStart> RE_SCAN_LIMIT ) ; } <S2SV_ModStart> ; match = _yr_re_is_word_char ( input , character_size <S2SV_ModEnd> ) ; action <S2SV_ModStart> match = ! _yr_re_is_word_char ( input , character_size <S2SV_ModEnd> ) ; action <S2SV_ModStart> == 0 && input_backwards_size < character_size ) { <S2SV_ModEnd> match = TRUE <S2SV_ModStart> = TRUE ; } <S2SV_ModStart> >= max_bytes_matched ) { <S2SV_ModStart> = TRUE ; } else { assert ( input < input_data + input_forwards_size ) ; assert ( input >= input_data - input_backwards_size ) ; assert <S2SV_ModEnd> ( input - <S2SV_ModStart> input - input_incr < input_data + input_forwards_size ) ; assert ( input - input_incr >= input_data - input_backwards_size ) ; match = _yr_re_is_word_char ( input , character_size ) != _yr_re_is_word_char ( input - input_incr , character_size ) ; } <S2SV_ModEnd> if ( * <S2SV_ModStart> ) kill = input_backwards_size <S2SV_ModEnd> > ( size_t <S2SV_ModStart> else kill = input_backwards_size > 0 <S2SV_ModEnd> || ( bytes_matched <S2SV_ModStart> & RE_FLAGS_BACKWARDS || input_forwards_size <S2SV_ModEnd> > ( size_t <S2SV_ModStart> next_fiber ; } <S2SV_ModEnd> } input +=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 void WT_Interpolate ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame ) { EAS_PCM * pOutputBuffer ; EAS_I32 phaseInc ; EAS_I32 phaseFrac ; EAS_I32 acc0 ; const EAS_SAMPLE * pSamples ; const EAS_SAMPLE * loopEnd ; EAS_I32 samp1 ; EAS_I32 samp2 ; EAS_I32 numSamples ; numSamples = pWTIntFrame -> numSamples ; if ( numSamples <= 0 ) { <S2SV_StartBug> ALOGE ( \"b/26366256\" ) ; <S2SV_EndBug> return ; } pOutputBuffer = pWTIntFrame -> pAudioBuffer ; loopEnd = ( const EAS_SAMPLE * ) pWTVoice -> loopEnd + 1 ; pSamples = ( const EAS_SAMPLE * ) pWTVoice -> phaseAccum ; phaseFrac = pWTVoice -> phaseFrac ; phaseInc = pWTIntFrame -> frame . phaseIncrement ; # if defined ( _8_BIT_SAMPLES ) samp1 = pSamples [ 0 ] << 8 ; samp2 = pSamples [ 1 ] << 8 ; # else samp1 = pSamples [ 0 ] ; samp2 = pSamples [ 1 ] ; # endif while ( numSamples -- ) { acc0 = samp2 - samp1 ; acc0 = acc0 * phaseFrac ; acc0 = samp1 + ( acc0 >> NUM_PHASE_FRAC_BITS ) ; * pOutputBuffer ++ = ( EAS_I16 ) ( acc0 >> 2 ) ; phaseFrac += phaseInc ; acc0 = phaseFrac >> NUM_PHASE_FRAC_BITS ; if ( acc0 > 0 ) { pSamples += acc0 ; phaseFrac = ( EAS_I32 ) ( ( EAS_U32 ) phaseFrac & PHASE_FRAC_MASK ) ; acc0 = ( EAS_I32 ) ( pSamples - loopEnd ) ; if ( acc0 >= 0 ) pSamples = ( const EAS_SAMPLE * ) pWTVoice -> loopStart + acc0 ; # if defined ( _8_BIT_SAMPLES ) samp1 = pSamples [ 0 ] << 8 ; samp2 = pSamples [ 1 ] << 8 ; # else samp1 = pSamples [ 0 ] ; samp2 = pSamples [ 1 ] ; # endif } } pWTVoice -> phaseAccum = ( EAS_U32 ) pSamples ; pWTVoice -> phaseFrac = ( EAS_U32 ) phaseFrac ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ALOGE ( \"b/26366256\" ) ; android_errorWriteLog ( 0x534e4554 , \"26366256\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 long kvm_arch_vcpu_ioctl ( struct file * filp , unsigned int ioctl , unsigned long arg ) { struct kvm_vcpu * vcpu = filp -> private_data ; void __user * argp = ( void __user * ) arg ; int r ; union { struct kvm_lapic_state * lapic ; struct kvm_xsave * xsave ; struct kvm_xcrs * xcrs ; void * buffer ; } u ; u . buffer = NULL ; switch ( ioctl ) { case KVM_GET_LAPIC : { r = - EINVAL ; if ( ! vcpu -> arch . apic ) goto out ; u . lapic = kzalloc ( sizeof ( struct kvm_lapic_state ) , GFP_KERNEL ) ; r = - ENOMEM ; if ( ! u . lapic ) goto out ; r = kvm_vcpu_ioctl_get_lapic ( vcpu , u . lapic ) ; if ( r ) goto out ; r = - EFAULT ; if ( copy_to_user ( argp , u . lapic , sizeof ( struct kvm_lapic_state ) ) ) goto out ; r = 0 ; break ; } case KVM_SET_LAPIC : { r = - EINVAL ; if ( ! vcpu -> arch . apic ) goto out ; u . lapic = memdup_user ( argp , sizeof ( * u . lapic ) ) ; if ( IS_ERR ( u . lapic ) ) return PTR_ERR ( u . lapic ) ; r = kvm_vcpu_ioctl_set_lapic ( vcpu , u . lapic ) ; break ; } case KVM_INTERRUPT : { struct kvm_interrupt irq ; r = - EFAULT ; if ( copy_from_user ( & irq , argp , sizeof irq ) ) goto out ; r = kvm_vcpu_ioctl_interrupt ( vcpu , & irq ) ; break ; } case KVM_NMI : { r = kvm_vcpu_ioctl_nmi ( vcpu ) ; break ; } case KVM_SET_CPUID : { struct kvm_cpuid __user * cpuid_arg = argp ; struct kvm_cpuid cpuid ; r = - EFAULT ; if ( copy_from_user ( & cpuid , cpuid_arg , sizeof cpuid ) ) goto out ; r = kvm_vcpu_ioctl_set_cpuid ( vcpu , & cpuid , cpuid_arg -> entries ) ; break ; } case KVM_SET_CPUID2 : { struct kvm_cpuid2 __user * cpuid_arg = argp ; struct kvm_cpuid2 cpuid ; r = - EFAULT ; if ( copy_from_user ( & cpuid , cpuid_arg , sizeof cpuid ) ) goto out ; r = kvm_vcpu_ioctl_set_cpuid2 ( vcpu , & cpuid , cpuid_arg -> entries ) ; break ; } case KVM_GET_CPUID2 : { struct kvm_cpuid2 __user * cpuid_arg = argp ; struct kvm_cpuid2 cpuid ; r = - EFAULT ; if ( copy_from_user ( & cpuid , cpuid_arg , sizeof cpuid ) ) goto out ; r = kvm_vcpu_ioctl_get_cpuid2 ( vcpu , & cpuid , cpuid_arg -> entries ) ; if ( r ) goto out ; r = - EFAULT ; if ( copy_to_user ( cpuid_arg , & cpuid , sizeof cpuid ) ) goto out ; r = 0 ; break ; } case KVM_GET_MSRS : r = msr_io ( vcpu , argp , kvm_get_msr , 1 ) ; break ; case KVM_SET_MSRS : r = msr_io ( vcpu , argp , do_set_msr , 0 ) ; break ; case KVM_TPR_ACCESS_REPORTING : { struct kvm_tpr_access_ctl tac ; r = - EFAULT ; if ( copy_from_user ( & tac , argp , sizeof tac ) ) goto out ; r = vcpu_ioctl_tpr_access_reporting ( vcpu , & tac ) ; if ( r ) goto out ; r = - EFAULT ; if ( copy_to_user ( argp , & tac , sizeof tac ) ) goto out ; r = 0 ; break ; } ; case KVM_SET_VAPIC_ADDR : { struct kvm_vapic_addr va ; r = - EINVAL ; if ( ! irqchip_in_kernel ( vcpu -> kvm ) ) goto out ; r = - EFAULT ; if ( copy_from_user ( & va , argp , sizeof va ) ) goto out ; <S2SV_StartBug> r = 0 ; <S2SV_EndBug> kvm_lapic_set_vapic_addr ( vcpu , va . vapic_addr ) ; break ; } case KVM_X86_SETUP_MCE : { u64 mcg_cap ; r = - EFAULT ; if ( copy_from_user ( & mcg_cap , argp , sizeof mcg_cap ) ) goto out ; r = kvm_vcpu_ioctl_x86_setup_mce ( vcpu , mcg_cap ) ; break ; } case KVM_X86_SET_MCE : { struct kvm_x86_mce mce ; r = - EFAULT ; if ( copy_from_user ( & mce , argp , sizeof mce ) ) goto out ; r = kvm_vcpu_ioctl_x86_set_mce ( vcpu , & mce ) ; break ; } case KVM_GET_VCPU_EVENTS : { struct kvm_vcpu_events events ; kvm_vcpu_ioctl_x86_get_vcpu_events ( vcpu , & events ) ; r = - EFAULT ; if ( copy_to_user ( argp , & events , sizeof ( struct kvm_vcpu_events ) ) ) break ; r = 0 ; break ; } case KVM_SET_VCPU_EVENTS : { struct kvm_vcpu_events events ; r = - EFAULT ; if ( copy_from_user ( & events , argp , sizeof ( struct kvm_vcpu_events ) ) ) break ; r = kvm_vcpu_ioctl_x86_set_vcpu_events ( vcpu , & events ) ; break ; } case KVM_GET_DEBUGREGS : { struct kvm_debugregs dbgregs ; kvm_vcpu_ioctl_x86_get_debugregs ( vcpu , & dbgregs ) ; r = - EFAULT ; if ( copy_to_user ( argp , & dbgregs , sizeof ( struct kvm_debugregs ) ) ) break ; r = 0 ; break ; } case KVM_SET_DEBUGREGS : { struct kvm_debugregs dbgregs ; r = - EFAULT ; if ( copy_from_user ( & dbgregs , argp , sizeof ( struct kvm_debugregs ) ) ) break ; r = kvm_vcpu_ioctl_x86_set_debugregs ( vcpu , & dbgregs ) ; break ; } case KVM_GET_XSAVE : { u . xsave = kzalloc ( sizeof ( struct kvm_xsave ) , GFP_KERNEL ) ; r = - ENOMEM ; if ( ! u . xsave ) break ; kvm_vcpu_ioctl_x86_get_xsave ( vcpu , u . xsave ) ; r = - EFAULT ; if ( copy_to_user ( argp , u . xsave , sizeof ( struct kvm_xsave ) ) ) break ; r = 0 ; break ; } case KVM_SET_XSAVE : { u . xsave = memdup_user ( argp , sizeof ( * u . xsave ) ) ; if ( IS_ERR ( u . xsave ) ) return PTR_ERR ( u . xsave ) ; r = kvm_vcpu_ioctl_x86_set_xsave ( vcpu , u . xsave ) ; break ; } case KVM_GET_XCRS : { u . xcrs = kzalloc ( sizeof ( struct kvm_xcrs ) , GFP_KERNEL ) ; r = - ENOMEM ; if ( ! u . xcrs ) break ; kvm_vcpu_ioctl_x86_get_xcrs ( vcpu , u . xcrs ) ; r = - EFAULT ; if ( copy_to_user ( argp , u . xcrs , sizeof ( struct kvm_xcrs ) ) ) break ; r = 0 ; break ; } case KVM_SET_XCRS : { u . xcrs = memdup_user ( argp , sizeof ( * u . xcrs ) ) ; if ( IS_ERR ( u . xcrs ) ) return PTR_ERR ( u . xcrs ) ; r = kvm_vcpu_ioctl_x86_set_xcrs ( vcpu , u . xcrs ) ; break ; } case KVM_SET_TSC_KHZ : { u32 user_tsc_khz ; r = - EINVAL ; user_tsc_khz = ( u32 ) arg ; if ( user_tsc_khz >= kvm_max_guest_tsc_khz ) goto out ; if ( user_tsc_khz == 0 ) user_tsc_khz = tsc_khz ; kvm_set_tsc_khz ( vcpu , user_tsc_khz ) ; r = 0 ; goto out ; } case KVM_GET_TSC_KHZ : { r = vcpu -> arch . virtual_tsc_khz ; goto out ; } case KVM_KVMCLOCK_CTRL : { r = kvm_set_guest_paused ( vcpu ) ; goto out ; } default : r = - EINVAL ; } out : kfree ( u . buffer ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; r = <S2SV_ModEnd> kvm_lapic_set_vapic_addr ( vcpu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int ip_build_and_send_pkt ( struct sk_buff * skb , struct sock * sk , <S2SV_StartBug> __be32 saddr , __be32 daddr , struct ip_options * opt ) <S2SV_EndBug> { struct inet_sock * inet = inet_sk ( sk ) ; struct rtable * rt = skb_rtable ( skb ) ; struct iphdr * iph ; <S2SV_StartBug> skb_push ( skb , sizeof ( struct iphdr ) + ( opt ? opt -> optlen : 0 ) ) ; <S2SV_EndBug> skb_reset_network_header ( skb ) ; iph = ip_hdr ( skb ) ; iph -> version = 4 ; iph -> ihl = 5 ; iph -> tos = inet -> tos ; if ( ip_dont_fragment ( sk , & rt -> dst ) ) iph -> frag_off = htons ( IP_DF ) ; else iph -> frag_off = 0 ; iph -> ttl = ip_select_ttl ( inet , & rt -> dst ) ; iph -> daddr = rt -> rt_dst ; iph -> saddr = rt -> rt_src ; iph -> protocol = sk -> sk_protocol ; ip_select_ident ( iph , & rt -> dst , sk ) ; <S2SV_StartBug> if ( opt && opt -> optlen ) { <S2SV_EndBug> <S2SV_StartBug> iph -> ihl += opt -> optlen >> 2 ; <S2SV_EndBug> <S2SV_StartBug> ip_options_build ( skb , opt , daddr , rt , 0 ) ; <S2SV_EndBug> } skb -> priority = sk -> sk_priority ; skb -> mark = sk -> sk_mark ; return ip_local_out ( skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> daddr , struct ip_options_rcu <S2SV_ModEnd> * opt ) <S2SV_ModStart> ? opt -> opt . <S2SV_ModStart> && opt -> opt . <S2SV_ModStart> += opt -> opt . <S2SV_ModStart> ( skb , & opt ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5550\n\n```\nCWE-200 void iov_iter_pipe ( struct iov_iter * i , int direction , struct pipe_inode_info * pipe , size_t count ) { <S2SV_StartBug> BUG_ON ( direction != ITER_PIPE ) ; <S2SV_EndBug> i -> type = direction ; i -> pipe = pipe ; i -> idx = ( pipe -> curbuf + pipe -> nrbufs ) & ( pipe -> buffers - 1 ) ; i -> iov_offset = 0 ; i -> count = count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> direction != ITER_PIPE ) ; WARN_ON ( pipe -> nrbufs == pipe -> buffers\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15855\n\n```\nCWE-476 bool CompileKeymap ( XkbFile * file , struct xkb_keymap * keymap , enum merge_mode merge ) { bool ok ; XkbFile * files [ LAST_KEYMAP_FILE_TYPE + 1 ] = { NULL } ; enum xkb_file_type type ; struct xkb_context * ctx = keymap -> ctx ; for ( file = ( XkbFile * ) file -> defs ; file ; file = ( XkbFile * ) file -> common . next ) { if ( file -> file_type < FIRST_KEYMAP_FILE_TYPE || file -> file_type > LAST_KEYMAP_FILE_TYPE ) { <S2SV_StartBug> log_err ( ctx , \"Cannot<S2SV_blank>define<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>a<S2SV_blank>keymap<S2SV_blank>file\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> xkb_file_type_to_string ( file -> file_type ) ) ; <S2SV_EndBug> continue ; } if ( files [ file -> file_type ] ) { log_err ( ctx , \"More<S2SV_blank>than<S2SV_blank>one<S2SV_blank>%s<S2SV_blank>section<S2SV_blank>in<S2SV_blank>keymap<S2SV_blank>file;<S2SV_blank>\" \"All<S2SV_blank>sections<S2SV_blank>after<S2SV_blank>the<S2SV_blank>first<S2SV_blank>ignored\\\\n\" , xkb_file_type_to_string ( file -> file_type ) ) ; continue ; } files [ file -> file_type ] = file ; } ok = true ; for ( type = FIRST_KEYMAP_FILE_TYPE ; type <= LAST_KEYMAP_FILE_TYPE ; type ++ ) { if ( files [ type ] == NULL ) { log_err ( ctx , \"Required<S2SV_blank>section<S2SV_blank>%s<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>keymap\\\\n\" , xkb_file_type_to_string ( type ) ) ; ok = false ; } } if ( ! ok ) return false ; for ( type = FIRST_KEYMAP_FILE_TYPE ; type <= LAST_KEYMAP_FILE_TYPE ; type ++ ) { log_dbg ( ctx , \"Compiling<S2SV_blank>%s<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , xkb_file_type_to_string ( type ) , files [ type ] -> name ) ; ok = compile_file_fns [ type ] ( files [ type ] , keymap , merge ) ; if ( ! ok ) { log_err ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>compile<S2SV_blank>%s\\\\n\" , xkb_file_type_to_string ( type ) ) ; return false ; } } return UpdateDerivedKeymapFields ( keymap ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> LAST_KEYMAP_FILE_TYPE ) { if ( file -> file_type == FILE_TYPE_GEOMETRY ) { log_vrb ( ctx , 1 , \"Geometry<S2SV_blank>sections<S2SV_blank>are<S2SV_blank>not<S2SV_blank>supported;<S2SV_blank>ignoring\\\\n\" ) ; } else { <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16644\n\n```\nCWE-20 static Image * ReadPICTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowPICTException ( exception , message ) { if ( tile_image != ( Image * ) NULL ) tile_image = DestroyImage ( tile_image ) ; if ( read_info != ( ImageInfo * ) NULL ) read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( ( exception ) , ( message ) ) ; } <S2SV_EndBug> char geometry [ MagickPathExtent ] , header_ole [ 4 ] ; Image * image , * tile_image ; ImageInfo * read_info ; int c , code ; MagickBooleanType jpeg , status ; PICTRectangle frame ; PICTPixmap pixmap ; Quantum index ; register Quantum * q ; register ssize_t i , x ; size_t extent , length ; ssize_t count , flags , j , version , y ; StringInfo * profile ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } read_info = ( ImageInfo * ) NULL ; tile_image = ( Image * ) NULL ; pixmap . bits_per_pixel = 0 ; pixmap . component_count = 0 ; header_ole [ 0 ] = ReadBlobByte ( image ) ; header_ole [ 1 ] = ReadBlobByte ( image ) ; header_ole [ 2 ] = ReadBlobByte ( image ) ; header_ole [ 3 ] = ReadBlobByte ( image ) ; if ( ! ( ( header_ole [ 0 ] == 0x50 ) && ( header_ole [ 1 ] == 0x49 ) && ( header_ole [ 2 ] == 0x43 ) && ( header_ole [ 3 ] == 0x54 ) ) ) for ( i = 0 ; i < 508 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; ( void ) ReadBlobMSBShort ( image ) ; if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; while ( ( c = ReadBlobByte ( image ) ) == 0 ) ; if ( c != 0x11 ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; version = ( ssize_t ) ReadBlobByte ( image ) ; if ( version == 2 ) { c = ReadBlobByte ( image ) ; if ( c != 0xff ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; } else if ( version != 1 ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( frame . left < 0 ) || ( frame . right < 0 ) || ( frame . top < 0 ) || ( frame . bottom < 0 ) || ( frame . left >= frame . right ) || ( frame . top >= frame . bottom ) ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; flags = 0 ; image -> depth = 8 ; image -> columns = ( size_t ) ( frame . right - frame . left ) ; image -> rows = ( size_t ) ( frame . bottom - frame . top ) ; image -> resolution . x = DefaultResolution ; image -> resolution . y = DefaultResolution ; image -> units = UndefinedResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status != MagickFalse ) status = ResetImagePixels ( image , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; jpeg = MagickFalse ; for ( code = 0 ; EOFBlob ( image ) == MagickFalse ; ) { if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( ( version == 1 ) || ( ( TellBlob ( image ) % 2 ) != 0 ) ) code = ReadBlobByte ( image ) ; if ( version == 2 ) code = ReadBlobMSBSignedShort ( image ) ; if ( code < 0 ) break ; if ( code == 0 ) continue ; if ( code > 0xa1 ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"%04X:\" , code ) ; } else { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>%04X<S2SV_blank>%s:<S2SV_blank>%s\" , code , codes [ code ] . name , codes [ code ] . description ) ; switch ( code ) { case 0x01 : { length = ReadBlobMSBShort ( image ) ; <S2SV_StartBug> if ( length != 0x000a ) <S2SV_EndBug> { for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( ( frame . left & 0x8000 ) != 0 ) || ( ( frame . top & 0x8000 ) != 0 ) ) break ; image -> columns = ( size_t ) ( frame . right - frame . left ) ; image -> rows = ( size_t ) ( frame . bottom - frame . top ) ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status != MagickFalse ) status = ResetImagePixels ( image , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; break ; } case 0x12 : case 0x13 : case 0x14 : { ssize_t pattern ; size_t height , width ; pattern = ( ssize_t ) ReadBlobMSBShort ( image ) ; for ( i = 0 ; i < 8 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; if ( pattern == 2 ) { for ( i = 0 ; i < 5 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } if ( pattern != 1 ) ThrowPICTException ( CorruptImageError , \"UnknownPatternType\" ) ; length = ReadBlobMSBShort ( image ) ; <S2SV_StartBug> if ( ReadRectangle ( image , & frame ) == MagickFalse ) <S2SV_EndBug> ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ReadPixmap ( image , & pixmap ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> depth = ( size_t ) pixmap . component_size ; image -> resolution . x = 1.0 * pixmap . horizontal_resolution ; image -> resolution . y = 1.0 * pixmap . vertical_resolution ; image -> units = PixelsPerInchResolution ; ( void ) ReadBlobMSBLong ( image ) ; flags = ( ssize_t ) ReadBlobMSBShort ( image ) ; <S2SV_StartBug> length = ReadBlobMSBShort ( image ) ; <S2SV_EndBug> for ( i = 0 ; i <= ( ssize_t ) length ; i ++ ) ( void ) ReadBlobMSBLong ( image ) ; width = ( size_t ) ( frame . bottom - frame . top ) ; height = ( size_t ) ( frame . right - frame . left ) ; if ( pixmap . bits_per_pixel <= 8 ) length &= 0x7fff ; if ( pixmap . bits_per_pixel == 16 ) width <<= 1 ; if ( length == 0 ) length = width ; if ( length < 8 ) { for ( i = 0 ; i < ( ssize_t ) ( length * height ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } else for ( i = 0 ; i < ( ssize_t ) height ; i ++ ) { if ( EOFBlob ( image ) != MagickFalse ) break ; if ( length > 200 ) { for ( j = 0 ; j < ( ssize_t ) ReadBlobMSBShort ( image ) ; j ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } else for ( j = 0 ; j < ( ssize_t ) ReadBlobByte ( image ) ; j ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } break ; } case 0x1b : { image -> background_color . red = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; image -> background_color . green = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; image -> background_color . blue = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; break ; } case 0x70 : case 0x71 : case 0x72 : case 0x73 : case 0x74 : case 0x75 : case 0x76 : case 0x77 : { <S2SV_StartBug> length = ReadBlobMSBShort ( image ) ; <S2SV_EndBug> for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } case 0x90 : case 0x91 : case 0x98 : case 0x99 : case 0x9a : case 0x9b : { PICTRectangle source , destination ; register unsigned char * p ; size_t j ; ssize_t bytes_per_line ; unsigned char * pixels ; bytes_per_line = 0 ; if ( ( code != 0x9a ) && ( code != 0x9b ) ) bytes_per_line = ( ssize_t ) ReadBlobMSBShort ( image ) ; else { ( void ) ReadBlobMSBShort ( image ) ; ( void ) ReadBlobMSBShort ( image ) ; ( void ) ReadBlobMSBShort ( image ) ; } if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; tile_image = CloneImage ( image , ( size_t ) ( frame . right - frame . left ) , ( size_t ) ( frame . bottom - frame . top ) , MagickTrue , exception ) ; if ( tile_image == ( Image * ) NULL ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( code == 0x9a ) || ( code == 0x9b ) || ( ( bytes_per_line & 0x8000 ) != 0 ) ) { if ( ReadPixmap ( image , & pixmap ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; tile_image -> depth = ( size_t ) pixmap . component_size ; tile_image -> alpha_trait = pixmap . component_count == 4 ? BlendPixelTrait : UndefinedPixelTrait ; tile_image -> resolution . x = ( double ) pixmap . horizontal_resolution ; tile_image -> resolution . y = ( double ) pixmap . vertical_resolution ; tile_image -> units = PixelsPerInchResolution ; if ( tile_image -> alpha_trait != UndefinedPixelTrait ) ( void ) SetImageAlpha ( tile_image , OpaqueAlpha , exception ) ; } if ( ( code != 0x9a ) && ( code != 0x9b ) ) { tile_image -> colors = 2 ; if ( ( bytes_per_line & 0x8000 ) != 0 ) { ( void ) ReadBlobMSBLong ( image ) ; flags = ( ssize_t ) ReadBlobMSBShort ( image ) ; tile_image -> colors = 1UL * ReadBlobMSBShort ( image ) + 1 ; } status = AcquireImageColormap ( tile_image , tile_image -> colors , exception ) ; if ( status == MagickFalse ) ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bytes_per_line & 0x8000 ) != 0 ) { for ( i = 0 ; i < ( ssize_t ) tile_image -> colors ; i ++ ) { j = ReadBlobMSBShort ( image ) % tile_image -> colors ; if ( ( flags & 0x8000 ) != 0 ) j = ( size_t ) i ; tile_image -> colormap [ j ] . red = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; tile_image -> colormap [ j ] . green = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; tile_image -> colormap [ j ] . blue = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; } } else { for ( i = 0 ; i < ( ssize_t ) tile_image -> colors ; i ++ ) { tile_image -> colormap [ i ] . red = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . red ) ; tile_image -> colormap [ i ] . green = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . green ) ; tile_image -> colormap [ i ] . blue = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . blue ) ; } } } if ( EOFBlob ( image ) != MagickFalse ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ReadRectangle ( image , & source ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ReadRectangle ( image , & destination ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; ( void ) ReadBlobMSBShort ( image ) ; if ( ( code == 0x91 ) || ( code == 0x99 ) || ( code == 0x9b ) ) { <S2SV_StartBug> length = ReadBlobMSBShort ( image ) ; <S2SV_EndBug> for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } if ( ( code != 0x9a ) && ( code != 0x9b ) && ( bytes_per_line & 0x8000 ) == 0 ) pixels = DecodeImage ( image , tile_image , ( size_t ) bytes_per_line , 1 , & extent ) ; else pixels = DecodeImage ( image , tile_image , ( size_t ) bytes_per_line , ( unsigned int ) pixmap . bits_per_pixel , & extent ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowPICTException ( CorruptImageError , \"UnableToUncompressImage\" ) ; p = pixels ; for ( y = 0 ; y < ( ssize_t ) tile_image -> rows ; y ++ ) { if ( p > ( pixels + extent + image -> columns ) ) { pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; } q = QueueAuthenticPixels ( tile_image , 0 , y , tile_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) tile_image -> columns ; x ++ ) { if ( tile_image -> storage_class == PseudoClass ) { index = ( Quantum ) ConstrainColormapIndex ( tile_image , ( ssize_t ) * p , exception ) ; SetPixelIndex ( tile_image , index , q ) ; SetPixelRed ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . red , q ) ; SetPixelGreen ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . green , q ) ; SetPixelBlue ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . blue , q ) ; } else { if ( pixmap . bits_per_pixel == 16 ) { i = ( ssize_t ) ( * p ++ ) ; j = ( size_t ) ( * p ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( i & 0x7c ) << 1 ) ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( ( i & 0x03 ) << 6 ) | ( ( j & 0xe0 ) >> 2 ) ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( j & 0x1f ) << 3 ) ) , q ) ; } else if ( tile_image -> alpha_trait == UndefinedPixelTrait ) { if ( p > ( pixels + extent + 2 * image -> columns ) ) ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( * ( p + tile_image -> columns ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( * ( p + 2 * tile_image -> columns ) ) , q ) ; } else { if ( p > ( pixels + extent + 3 * image -> columns ) ) ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; SetPixelAlpha ( tile_image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( * ( p + tile_image -> columns ) ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( * ( p + 2 * tile_image -> columns ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( * ( p + 3 * tile_image -> columns ) ) , q ) ; } } p ++ ; q += GetPixelChannels ( tile_image ) ; } if ( SyncAuthenticPixels ( tile_image , exception ) == MagickFalse ) break ; if ( ( tile_image -> storage_class == DirectClass ) && ( pixmap . bits_per_pixel != 16 ) ) { p += ( pixmap . component_count - 1 ) * tile_image -> columns ; if ( p < pixels ) break ; } status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , tile_image -> rows ) ; if ( status == MagickFalse ) break ; } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( ( jpeg == MagickFalse ) && ( EOFBlob ( image ) == MagickFalse ) ) if ( ( code == 0x9a ) || ( code == 0x9b ) || ( ( bytes_per_line & 0x8000 ) != 0 ) ) ( void ) CompositeImage ( image , tile_image , CopyCompositeOp , MagickTrue , ( ssize_t ) destination . left , ( ssize_t ) destination . top , exception ) ; tile_image = DestroyImage ( tile_image ) ; break ; } case 0xa1 : { unsigned char * info ; size_t type ; type = ReadBlobMSBShort ( image ) ; length = ReadBlobMSBShort ( image ) ; <S2SV_StartBug> if ( length == 0 ) <S2SV_EndBug> break ; ( void ) ReadBlobMSBLong ( image ) ; length -= MagickMin ( length , 4 ) ; if ( length == 0 ) break ; info = ( unsigned char * ) AcquireQuantumMemory ( length , sizeof ( * info ) ) ; if ( info == ( unsigned char * ) NULL ) break ; count = ReadBlob ( image , length , info ) ; if ( count != ( ssize_t ) length ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"UnableToReadImageData\" ) ; } switch ( type ) { case 0xe0 : { profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; SetStringInfoDatum ( profile , info ) ; status = SetImageProfile ( image , \"icc\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; if ( status == MagickFalse ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case 0x1f2 : { profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; SetStringInfoDatum ( profile , info ) ; status = SetImageProfile ( image , \"iptc\" , profile , exception ) ; if ( status == MagickFalse ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } profile = DestroyStringInfo ( profile ) ; break ; } default : break ; } info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; break ; } default : { if ( codes [ code ] . length == - 1 ) ( void ) ReadBlobMSBShort ( image ) ; else for ( i = 0 ; i < ( ssize_t ) codes [ code ] . length ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } } } if ( code == 0xc00 ) { for ( i = 0 ; i < 24 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } if ( ( ( code >= 0xb0 ) && ( code <= 0xcf ) ) || ( ( code >= 0x8000 ) && ( code <= 0x80ff ) ) ) continue ; if ( code == 0x8200 ) { char filename [ MaxTextExtent ] ; FILE * file ; int unique_file ; jpeg = MagickTrue ; read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; ( void ) FormatLocaleString ( read_info -> filename , MaxTextExtent , \"jpeg:%s\" , filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( ( unique_file == - 1 ) || ( file == ( FILE * ) NULL ) ) { ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; ( void ) CopyMagickString ( image -> filename , read_info -> filename , MagickPathExtent ) ; ThrowPICTException ( FileOpenError , \"UnableToCreateTemporaryFile\" ) ; } length = ReadBlobMSBLong ( image ) ; <S2SV_StartBug> if ( length > 154 ) <S2SV_EndBug> { for ( i = 0 ; i < 6 ; i ++ ) ( void ) ReadBlobMSBLong ( image ) ; if ( ReadRectangle ( image , & frame ) == MagickFalse ) { ( void ) fclose ( file ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; } for ( i = 0 ; i < 122 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; for ( i = 0 ; i < ( ssize_t ) ( length - 154 ) ; i ++ ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; if ( fputc ( c , file ) != c ) break ; } } ( void ) fclose ( file ) ; ( void ) close ( unique_file ) ; tile_image = ReadImage ( read_info , exception ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( tile_image == ( Image * ) NULL ) continue ; ( void ) FormatLocaleString ( geometry , MagickPathExtent , \"%.20gx%.20g\" , ( double ) MagickMax ( image -> columns , tile_image -> columns ) , ( double ) MagickMax ( image -> rows , tile_image -> rows ) ) ; ( void ) SetImageExtent ( image , MagickMax ( image -> columns , tile_image -> columns ) , MagickMax ( image -> rows , tile_image -> rows ) , exception ) ; ( void ) TransformImageColorspace ( image , tile_image -> colorspace , exception ) ; ( void ) CompositeImage ( image , tile_image , CopyCompositeOp , MagickTrue , ( ssize_t ) frame . left , ( ssize_t ) frame . right , exception ) ; image -> compression = tile_image -> compression ; tile_image = DestroyImage ( tile_image ) ; continue ; } if ( ( code == 0xff ) || ( code == 0xffff ) ) break ; if ( ( ( code >= 0xd0 ) && ( code <= 0xfe ) ) || ( ( code >= 0x8100 ) && ( code <= 0xffff ) ) ) { length = ReadBlobMSBShort ( image ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) <S2SV_EndBug> if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } if ( ( code >= 0x100 ) && ( code <= 0x7fff ) ) { length = ( size_t ) ( ( code >> 7 ) & 0xff ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) <S2SV_EndBug> if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , message ) \\\\\\n{ <S2SV_ModEnd> if ( tile_image <S2SV_ModStart> ) ) ; \\\\\\n} <S2SV_ModEnd> char geometry [ <S2SV_ModStart> if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( length <S2SV_ModStart> ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( <S2SV_ModStart> ReadBlobMSBShort ( image ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" <S2SV_ModStart> ReadBlobMSBShort ( image ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" <S2SV_ModStart> ReadBlobMSBShort ( image ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" <S2SV_ModStart> if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( length <S2SV_ModStart> ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( length > <S2SV_ModStart> image ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; <S2SV_ModStart> 0xff ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 static void destroy_super ( struct super_block * s ) { int i ; list_lru_destroy ( & s -> s_dentry_lru ) ; list_lru_destroy ( & s -> s_inode_lru ) ; <S2SV_StartBug> # ifdef CONFIG_SMP <S2SV_EndBug> free_percpu ( s -> s_files ) ; # endif for ( i = 0 ; i < SB_FREEZE_LEVELS ; i ++ ) percpu_counter_destroy ( & s -> s_writers . counter [ i ] ) ; security_sb_free ( s ) ; WARN_ON ( ! list_empty ( & s -> s_mounts ) ) ; kfree ( s -> s_subtype ) ; kfree ( s -> s_options ) ; kfree_rcu ( s , rcu ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s_inode_lru ) ; <S2SV_ModEnd> for ( i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static int get_gate_page ( struct mm_struct * mm , unsigned long address , unsigned int gup_flags , struct vm_area_struct * * vma , struct page * * page ) { pgd_t * pgd ; p4d_t * p4d ; pud_t * pud ; pmd_t * pmd ; pte_t * pte ; int ret = - EFAULT ; if ( gup_flags & FOLL_WRITE ) return - EFAULT ; if ( address > TASK_SIZE ) pgd = pgd_offset_k ( address ) ; else pgd = pgd_offset_gate ( mm , address ) ; BUG_ON ( pgd_none ( * pgd ) ) ; p4d = p4d_offset ( pgd , address ) ; BUG_ON ( p4d_none ( * p4d ) ) ; pud = pud_offset ( p4d , address ) ; BUG_ON ( pud_none ( * pud ) ) ; pmd = pmd_offset ( pud , address ) ; if ( ! pmd_present ( * pmd ) ) return - EFAULT ; VM_BUG_ON ( pmd_trans_huge ( * pmd ) ) ; pte = pte_offset_map ( pmd , address ) ; if ( pte_none ( * pte ) ) goto unmap ; * vma = get_gate_vma ( mm ) ; if ( ! page ) goto out ; * page = vm_normal_page ( * vma , address , * pte ) ; if ( ! * page ) { if ( ( gup_flags & FOLL_DUMP ) || ! is_zero_pfn ( pte_pfn ( * pte ) ) ) goto unmap ; * page = pte_page ( * pte ) ; if ( is_device_public_page ( * page ) ) goto unmap ; } <S2SV_StartBug> get_page ( * page ) ; <S2SV_EndBug> out : ret = 0 ; unmap : pte_unmap ( pte ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unmap ; } if ( unlikely ( ! try_get_page ( * page ) ) ) { ret = - ENOMEM ; goto unmap ; } <S2SV_ModEnd> out : ret\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28196\n\n```\nCWE-674 static krb5_error_code decode_sequence ( const uint8_t * asn1 , size_t len , const struct seq_info * seq , void * val ) { krb5_error_code ret ; const uint8_t * contents ; size_t i , j , clen ; taginfo t ; assert ( seq -> n_fields > 0 ) ; for ( i = 0 ; i < seq -> n_fields ; i ++ ) { if ( len == 0 ) break ; <S2SV_StartBug> ret = get_tag ( asn1 , len , & t , & contents , & clen , & asn1 , & len ) ; <S2SV_EndBug> if ( ret ) goto error ; for ( ; i < seq -> n_fields ; i ++ ) { if ( check_atype_tag ( seq -> fields [ i ] , & t ) ) break ; ret = omit_atype ( seq -> fields [ i ] , val ) ; if ( ret ) goto error ; } if ( i == seq -> n_fields ) break ; ret = decode_atype ( & t , contents , clen , seq -> fields [ i ] , val ) ; if ( ret ) goto error ; } for ( ; i < seq -> n_fields ; i ++ ) { ret = omit_atype ( seq -> fields [ i ] , val ) ; if ( ret ) goto error ; } return 0 ; error : for ( j = 0 ; j < i ; j ++ ) free_atype ( seq -> fields [ j ] , val ) ; for ( j = 0 ; j < i ; j ++ ) free_atype_ptr ( seq -> fields [ j ] , val ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , & len , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0196\n\n```\nCWE-362 static ssize_t n_tty_write ( struct tty_struct * tty , struct file * file , const unsigned char * buf , size_t nr ) { const unsigned char * b = buf ; DECLARE_WAITQUEUE ( wait , current ) ; int c ; ssize_t retval = 0 ; if ( L_TOSTOP ( tty ) && file -> f_op -> write != redirected_tty_write ) { retval = tty_check_change ( tty ) ; if ( retval ) return retval ; } down_read ( & tty -> termios_rwsem ) ; process_echoes ( tty ) ; add_wait_queue ( & tty -> write_wait , & wait ) ; while ( 1 ) { set_current_state ( TASK_INTERRUPTIBLE ) ; if ( signal_pending ( current ) ) { retval = - ERESTARTSYS ; break ; } if ( tty_hung_up_p ( file ) || ( tty -> link && ! tty -> link -> count ) ) { retval = - EIO ; break ; } if ( O_OPOST ( tty ) ) { while ( nr > 0 ) { ssize_t num = process_output_block ( tty , b , nr ) ; if ( num < 0 ) { if ( num == - EAGAIN ) break ; retval = num ; goto break_out ; } b += num ; nr -= num ; if ( nr == 0 ) break ; c = * b ; if ( process_output ( c , tty ) < 0 ) break ; b ++ ; nr -- ; } if ( tty -> ops -> flush_chars ) tty -> ops -> flush_chars ( tty ) ; } else { <S2SV_StartBug> while ( nr > 0 ) { <S2SV_EndBug> <S2SV_StartBug> c = tty -> ops -> write ( tty , b , nr ) ; <S2SV_EndBug> if ( c < 0 ) { retval = c ; goto break_out ; } if ( ! c ) break ; b += c ; nr -= c ; } } if ( ! nr ) break ; if ( file -> f_flags & O_NONBLOCK ) { retval = - EAGAIN ; break ; } up_read ( & tty -> termios_rwsem ) ; schedule ( ) ; down_read ( & tty -> termios_rwsem ) ; } break_out : __set_current_state ( TASK_RUNNING ) ; remove_wait_queue ( & tty -> write_wait , & wait ) ; if ( b - buf != nr && tty -> fasync ) set_bit ( TTY_DO_WRITE_WAKEUP , & tty -> flags ) ; up_read ( & tty -> termios_rwsem ) ; return ( b - buf ) ? b - buf : retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { struct n_tty_data * ldata = tty -> disc_data ; <S2SV_ModStart> 0 ) { mutex_lock ( & ldata -> output_lock ) ; <S2SV_ModStart> b , nr ) ; mutex_unlock ( & ldata -> output_lock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 int do_mathemu ( struct pt_regs * regs , struct task_struct * fpt ) { int i ; int retcode = 0 ; unsigned long insn ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , 0 ) ; <S2SV_EndBug> # ifdef DEBUG_MATHEMU printk ( \"In<S2SV_blank>do_mathemu()...<S2SV_blank>pc<S2SV_blank>is<S2SV_blank>%08lx\\\\n\" , regs -> pc ) ; printk ( \"fpqdepth<S2SV_blank>is<S2SV_blank>%ld\\\\n\" , fpt -> thread . fpqdepth ) ; for ( i = 0 ; i < fpt -> thread . fpqdepth ; i ++ ) printk ( \"%d:<S2SV_blank>%08lx<S2SV_blank>at<S2SV_blank>%08lx\\\\n\" , i , fpt -> thread . fpqueue [ i ] . insn , ( unsigned long ) fpt -> thread . fpqueue [ i ] . insn_addr ) ; # endif if ( fpt -> thread . fpqdepth == 0 ) { # ifdef DEBUG_MATHEMU printk ( \"precise<S2SV_blank>trap<S2SV_blank>at<S2SV_blank>%08lx\\\\n\" , regs -> pc ) ; # endif if ( ! get_user ( insn , ( u32 __user * ) regs -> pc ) ) { retcode = do_one_mathemu ( insn , & fpt -> thread . fsr , fpt -> thread . float_regs ) ; if ( retcode ) { regs -> pc = regs -> npc ; regs -> npc += 4 ; } } return retcode ; } for ( i = 0 ; i < fpt -> thread . fpqdepth ; i ++ ) { retcode = do_one_mathemu ( fpt -> thread . fpqueue [ i ] . insn , & ( fpt -> thread . fsr ) , fpt -> thread . float_regs ) ; if ( ! retcode ) break ; } if ( retcode ) fpt -> thread . fsr &= ~ ( 0x3000 | FSR_CEXC_MASK ) ; else fpt -> thread . fsr &= ~ 0x3000 ; fpt -> thread . fpqdepth = 0 ; return retcode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0275\n\n```\nCWE-17 static long ext4_zero_range ( struct file * file , loff_t offset , loff_t len , int mode ) { struct inode * inode = file_inode ( file ) ; handle_t * handle = NULL ; unsigned int max_blocks ; loff_t new_size = 0 ; int ret = 0 ; int flags ; int credits ; int partial_begin , partial_end ; loff_t start , end ; ext4_lblk_t lblk ; struct address_space * mapping = inode -> i_mapping ; unsigned int blkbits = inode -> i_blkbits ; trace_ext4_zero_range ( inode , offset , len , mode ) ; if ( ! S_ISREG ( inode -> i_mode ) ) return - EINVAL ; if ( ext4_should_journal_data ( inode ) ) { ret = ext4_force_commit ( inode -> i_sb ) ; if ( ret ) return ret ; } if ( mapping -> nrpages && mapping_tagged ( mapping , PAGECACHE_TAG_DIRTY ) ) { ret = filemap_write_and_wait_range ( mapping , offset , offset + len - 1 ) ; if ( ret ) return ret ; } start = round_up ( offset , 1 << blkbits ) ; end = round_down ( ( offset + len ) , 1 << blkbits ) ; if ( start < offset || end > offset + len ) return - EINVAL ; partial_begin = offset & ( ( 1 << blkbits ) - 1 ) ; partial_end = ( offset + len ) & ( ( 1 << blkbits ) - 1 ) ; lblk = start >> blkbits ; max_blocks = ( end >> blkbits ) ; if ( max_blocks < lblk ) max_blocks = 0 ; else max_blocks -= lblk ; <S2SV_StartBug> flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT | <S2SV_EndBug> EXT4_GET_BLOCKS_CONVERT_UNWRITTEN | EXT4_EX_NOCACHE ; <S2SV_StartBug> if ( mode & FALLOC_FL_KEEP_SIZE ) <S2SV_EndBug> flags |= EXT4_GET_BLOCKS_KEEP_SIZE ; <S2SV_StartBug> mutex_lock ( & inode -> i_mutex ) ; <S2SV_EndBug> if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) { ret = - EOPNOTSUPP ; goto out_mutex ; } if ( ! ( mode & FALLOC_FL_KEEP_SIZE ) && offset + len > i_size_read ( inode ) ) { new_size = offset + len ; ret = inode_newsize_ok ( inode , new_size ) ; if ( ret ) goto out_mutex ; if ( partial_end ) max_blocks += 1 ; } <S2SV_StartBug> if ( max_blocks > 0 ) { <S2SV_EndBug> truncate_pagecache_range ( inode , start , end - 1 ) ; inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; ret = ext4_alloc_file_blocks ( file , lblk , max_blocks , new_size , flags , mode ) ; if ( ret ) goto out_dio ; ret = ext4_es_remove_extent ( inode , 0 , EXT_MAX_BLOCKS ) ; if ( ret ) goto out_dio ; } if ( ! partial_begin && ! partial_end ) goto out_dio ; credits = ( 2 * ext4_ext_index_trans_blocks ( inode , 2 ) ) + 1 ; if ( ext4_should_journal_data ( inode ) ) credits += 2 ; handle = ext4_journal_start ( inode , EXT4_HT_MISC , credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; ext4_std_error ( inode -> i_sb , ret ) ; goto out_dio ; } inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; if ( new_size ) { ext4_update_inode_size ( inode , new_size ) ; } else { if ( ( offset + len ) > i_size_read ( inode ) ) ext4_set_inode_flag ( inode , EXT4_INODE_EOFBLOCKS ) ; } ext4_mark_inode_dirty ( handle , inode ) ; ret = ext4_zero_partial_blocks ( handle , inode , offset , len ) ; if ( file -> f_flags & O_SYNC ) ext4_handle_sync ( handle ) ; ext4_journal_stop ( handle ) ; out_dio : ext4_inode_resume_unlocked_dio ( inode ) ; out_mutex : mutex_unlock ( & inode -> i_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -= lblk ; mutex_lock ( & inode -> i_mutex ) ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) { ret = - EOPNOTSUPP ; goto out_mutex ; } if ( ! <S2SV_ModEnd> ( mode & <S2SV_ModStart> & FALLOC_FL_KEEP_SIZE ) && offset + len > i_size_read ( inode ) ) { new_size = offset + len ; ret = inode_newsize_ok ( inode , new_size ) ; if ( ret ) goto out_mutex ; } flags = EXT4_GET_BLOCKS_CREATE_UNWRIT_EXT ; if ( mode & FALLOC_FL_KEEP_SIZE ) <S2SV_ModStart> |= EXT4_GET_BLOCKS_KEEP_SIZE ; if ( partial_begin || partial_end ) { ret = ext4_alloc_file_blocks ( file , round_down ( offset , 1 << blkbits ) >> blkbits , ( round_up ( ( offset + len ) , 1 << blkbits ) - round_down ( offset , 1 << blkbits ) ) >> blkbits , new_size , flags , mode ) ; if ( ret ) goto out_mutex <S2SV_ModEnd> ; } if <S2SV_ModStart> 0 ) { flags |= ( EXT4_GET_BLOCKS_CONVERT_UNWRITTEN | EXT4_EX_NOCACHE ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35963\n\n```\nCWE-787 int flb_gzip_compress ( void * in_data , size_t in_len , void * * out_data , size_t * out_len ) { int flush ; int status ; int footer_start ; uint8_t * pb ; size_t out_size ; void * out_buf ; z_stream strm ; mz_ulong crc ; <S2SV_StartBug> out_size = in_len + 32 ; <S2SV_EndBug> out_buf = flb_malloc ( out_size ) ; if ( ! out_buf ) { flb_errno ( ) ; flb_error ( \"[gzip]<S2SV_blank>could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>outgoing<S2SV_blank>buffer\" ) ; return - 1 ; } memset ( & strm , '\\\\0' , sizeof ( strm ) ) ; strm . zalloc = Z_NULL ; strm . zfree = Z_NULL ; strm . opaque = Z_NULL ; strm . next_in = in_data ; strm . avail_in = in_len ; strm . total_out = 0 ; deflateInit2 ( & strm , Z_DEFAULT_COMPRESSION , Z_DEFLATED , - Z_DEFAULT_WINDOW_BITS , 9 , Z_DEFAULT_STRATEGY ) ; gzip_header ( out_buf ) ; pb = ( uint8_t * ) out_buf + FLB_GZIP_HEADER_OFFSET ; flush = Z_NO_FLUSH ; while ( 1 ) { strm . next_out = pb + strm . total_out ; strm . avail_out = out_size - ( pb - ( uint8_t * ) out_buf ) ; if ( strm . avail_in == 0 ) { flush = Z_FINISH ; } status = deflate ( & strm , flush ) ; if ( status == Z_STREAM_END ) { break ; } else if ( status != Z_OK ) { deflateEnd ( & strm ) ; return - 1 ; } } if ( deflateEnd ( & strm ) != Z_OK ) { flb_free ( out_buf ) ; return - 1 ; } * out_len = strm . total_out ; footer_start = FLB_GZIP_HEADER_OFFSET + * out_len ; pb = ( uint8_t * ) out_buf + footer_start ; crc = mz_crc32 ( MZ_CRC32_INIT , in_data , in_len ) ; * pb ++ = crc & 0xFF ; * pb ++ = ( crc >> 8 ) & 0xFF ; * pb ++ = ( crc >> 16 ) & 0xFF ; * pb ++ = ( crc >> 24 ) & 0xFF ; * pb ++ = in_len & 0xFF ; * pb ++ = ( in_len >> 8 ) & 0xFF ; * pb ++ = ( in_len >> 16 ) & 0xFF ; * pb ++ = ( in_len >> 24 ) & 0xFF ; * out_len += FLB_GZIP_HEADER_OFFSET + 8 ; * out_data = out_buf ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mz_ulong crc ; int max_input_expansion = ( ( int ) ( in_len / 32000 ) + 1 ) * 5 ; out_size = 10 + 8 + max_input_expansion + in_len <S2SV_ModEnd> ; out_buf =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 static void prefetch_enc ( void ) { <S2SV_StartBug> prefetch_table ( ( const void * ) encT , sizeof ( encT ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { enc_tables . counter_head ++ ; enc_tables . counter_tail ++ ; <S2SV_ModStart> void * ) & enc_tables <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> , sizeof ( enc_tables <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0775\n\n```\nCWE-119 int ImagingFliDecode ( Imaging im , ImagingCodecState state , UINT8 * buf , int bytes ) { UINT8 * ptr ; int framesize ; int c , chunks ; int l , lines ; int i , j , x = 0 , y , ymax ; if ( bytes < 4 ) return 0 ; ptr = buf ; framesize = I32 ( ptr ) ; if ( framesize < I32 ( ptr ) ) return 0 ; if ( I16 ( ptr + 4 ) != 0xF1FA ) { state -> errcode = IMAGING_CODEC_UNKNOWN ; return - 1 ; } chunks = I16 ( ptr + 6 ) ; ptr += 16 ; for ( c = 0 ; c < chunks ; c ++ ) { UINT8 * data = ptr + 6 ; switch ( I16 ( ptr + 4 ) ) { case 4 : case 11 : break ; case 7 : lines = I16 ( data ) ; data += 2 ; for ( l = y = 0 ; l < lines && y < state -> ysize ; l ++ , y ++ ) { UINT8 * buf = ( UINT8 * ) im -> image [ y ] ; int p , packets ; packets = I16 ( data ) ; data += 2 ; while ( packets & 0x8000 ) { if ( packets & 0x4000 ) { y += 65536 - packets ; if ( y >= state -> ysize ) { state -> errcode = IMAGING_CODEC_OVERRUN ; return - 1 ; } buf = ( UINT8 * ) im -> image [ y ] ; } else { buf [ state -> xsize - 1 ] = ( UINT8 ) packets ; } packets = I16 ( data ) ; data += 2 ; } for ( p = x = 0 ; p < packets ; p ++ ) { x += data [ 0 ] ; if ( data [ 1 ] >= 128 ) { i = 256 - data [ 1 ] ; if ( x + i + i > state -> xsize ) break ; for ( j = 0 ; j < i ; j ++ ) { buf [ x ++ ] = data [ 2 ] ; buf [ x ++ ] = data [ 3 ] ; } data += 2 + 2 ; } else { i = 2 * ( int ) data [ 1 ] ; if ( x + i > state -> xsize ) break ; memcpy ( buf + x , data + 2 , i ) ; data += 2 + i ; x += i ; } } if ( p < packets ) break ; } if ( l < lines ) { state -> errcode = IMAGING_CODEC_OVERRUN ; return - 1 ; } break ; case 12 : y = I16 ( data ) ; ymax = y + I16 ( data + 2 ) ; data += 4 ; for ( ; y < ymax && y < state -> ysize ; y ++ ) { UINT8 * out = ( UINT8 * ) im -> image [ y ] ; int p , packets = * data ++ ; for ( p = x = 0 ; p < packets ; p ++ , x += i ) { x += data [ 0 ] ; if ( data [ 1 ] & 0x80 ) { i = 256 - data [ 1 ] ; if ( x + i > state -> xsize ) break ; memset ( out + x , data [ 2 ] , i ) ; data += 3 ; } else { i = data [ 1 ] ; if ( x + i > state -> xsize ) break ; memcpy ( out + x , data + 2 , i ) ; data += i + 2 ; } } if ( p < packets ) break ; } if ( y < ymax ) { state -> errcode = IMAGING_CODEC_OVERRUN ; return - 1 ; } break ; case 13 : for ( y = 0 ; y < state -> ysize ; y ++ ) memset ( im -> image [ y ] , 0 , state -> xsize ) ; break ; case 15 : for ( y = 0 ; y < state -> ysize ; y ++ ) { UINT8 * out = ( UINT8 * ) im -> image [ y ] ; data += 1 ; for ( x = 0 ; x < state -> xsize ; x += i ) { if ( data [ 0 ] & 0x80 ) { i = 256 - data [ 0 ] ; if ( x + i > state -> xsize ) break ; memcpy ( out + x , data + 1 , i ) ; data += i + 1 ; } else { i = data [ 0 ] ; if ( x + i > state -> xsize ) break ; memset ( out + x , data [ 1 ] , i ) ; data += 2 ; } } if ( x != state -> xsize ) { state -> errcode = IMAGING_CODEC_OVERRUN ; return - 1 ; } } break ; case 16 : for ( y = 0 ; y < state -> ysize ; y ++ ) { UINT8 * buf = ( UINT8 * ) im -> image [ y ] ; <S2SV_StartBug> memcpy ( buf + x , data , state -> xsize ) ; <S2SV_EndBug> data += state -> xsize ; } break ; case 18 : break ; default : state -> errcode = IMAGING_CODEC_UNKNOWN ; return - 1 ; } ptr += I32 ( ptr ) ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> memcpy ( buf <S2SV_ModEnd> , data ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2136\n\n```\nCWE-20 struct sk_buff * sock_alloc_send_pskb ( struct sock * sk , unsigned long header_len , unsigned long data_len , int noblock , int * errcode ) { struct sk_buff * skb ; gfp_t gfp_mask ; long timeo ; int err ; <S2SV_StartBug> gfp_mask = sk -> sk_allocation ; <S2SV_EndBug> if ( gfp_mask & __GFP_WAIT ) gfp_mask |= __GFP_REPEAT ; timeo = sock_sndtimeo ( sk , noblock ) ; while ( 1 ) { err = sock_error ( sk ) ; if ( err != 0 ) goto failure ; err = - EPIPE ; if ( sk -> sk_shutdown & SEND_SHUTDOWN ) goto failure ; if ( atomic_read ( & sk -> sk_wmem_alloc ) < sk -> sk_sndbuf ) { skb = alloc_skb ( header_len , gfp_mask ) ; if ( skb ) { <S2SV_StartBug> int npages ; <S2SV_EndBug> int i ; if ( ! data_len ) <S2SV_StartBug> break ; <S2SV_EndBug> npages = ( data_len + ( PAGE_SIZE - 1 ) ) >> PAGE_SHIFT ; skb -> truesize += data_len ; skb_shinfo ( skb ) -> nr_frags = npages ; for ( i = 0 ; i < npages ; i ++ ) { struct page * page ; page = alloc_pages ( sk -> sk_allocation , 0 ) ; if ( ! page ) { err = - ENOBUFS ; skb_shinfo ( skb ) -> nr_frags = i ; kfree_skb ( skb ) ; goto failure ; } __skb_fill_page_desc ( skb , i , page , 0 , ( data_len >= PAGE_SIZE ? PAGE_SIZE : data_len ) ) ; data_len -= PAGE_SIZE ; } break ; } err = - ENOBUFS ; goto failure ; } set_bit ( SOCK_ASYNC_NOSPACE , & sk -> sk_socket -> flags ) ; set_bit ( SOCK_NOSPACE , & sk -> sk_socket -> flags ) ; err = - EAGAIN ; if ( ! timeo ) goto failure ; if ( signal_pending ( current ) ) goto interrupted ; timeo = sock_wait_for_wmem ( sk , timeo ) ; } skb_set_owner_w ( skb , sk ) ; return skb ; interrupted : err = sock_intr_errno ( timeo ) ; failure : * errcode = err ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int err ; int npages = ( data_len + ( PAGE_SIZE - 1 ) ) >> PAGE_SHIFT ; err = - EMSGSIZE ; if ( npages > MAX_SKB_FRAGS ) goto failure ; <S2SV_ModStart> ) { int <S2SV_ModEnd> i ; if <S2SV_ModStart> data_len ) break <S2SV_ModEnd> ; skb ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000115\n\n```\nCWE-20 int main ( int argc , char * * argv ) { int c ; bool lock_memory = false ; bool do_daemonize = false ; bool preallocate = false ; int maxcore = 0 ; char * username = NULL ; char * pid_file = NULL ; struct passwd * pw ; struct rlimit rlim ; char * buf ; char unit = '\\\\0' ; int size_max = 0 ; int retval = EXIT_SUCCESS ; static int * l_socket = NULL ; static int * u_socket = NULL ; bool protocol_specified = false ; bool tcp_specified = false ; bool udp_specified = false ; bool start_lru_maintainer = true ; bool start_lru_crawler = true ; bool start_assoc_maint = true ; enum hashfunc_type hash_type = MURMUR3_HASH ; uint32_t tocrawl ; uint32_t slab_sizes [ MAX_NUMBER_OF_SLAB_CLASSES ] ; bool use_slab_sizes = false ; char * slab_sizes_unparsed = NULL ; bool slab_chunk_size_changed = false ; # ifdef EXTSTORE void * storage = NULL ; char * storage_file = NULL ; struct extstore_conf ext_cf ; # endif char * subopts , * subopts_orig ; char * subopts_value ; enum { MAXCONNS_FAST = 0 , HASHPOWER_INIT , NO_HASHEXPAND , SLAB_REASSIGN , SLAB_AUTOMOVE , SLAB_AUTOMOVE_RATIO , SLAB_AUTOMOVE_WINDOW , TAIL_REPAIR_TIME , HASH_ALGORITHM , LRU_CRAWLER , LRU_CRAWLER_SLEEP , LRU_CRAWLER_TOCRAWL , LRU_MAINTAINER , HOT_LRU_PCT , WARM_LRU_PCT , HOT_MAX_FACTOR , WARM_MAX_FACTOR , TEMPORARY_TTL , IDLE_TIMEOUT , WATCHER_LOGBUF_SIZE , WORKER_LOGBUF_SIZE , SLAB_SIZES , SLAB_CHUNK_MAX , TRACK_SIZES , NO_INLINE_ASCII_RESP , MODERN , NO_MODERN , NO_CHUNKED_ITEMS , NO_SLAB_REASSIGN , NO_SLAB_AUTOMOVE , NO_MAXCONNS_FAST , INLINE_ASCII_RESP , NO_LRU_CRAWLER , NO_LRU_MAINTAINER , NO_DROP_PRIVILEGES , # ifdef MEMCACHED_DEBUG RELAXED_PRIVILEGES , # endif # ifdef EXTSTORE EXT_PAGE_SIZE , EXT_PAGE_COUNT , EXT_WBUF_SIZE , EXT_THREADS , EXT_IO_DEPTH , EXT_PATH , EXT_ITEM_SIZE , EXT_ITEM_AGE , EXT_LOW_TTL , EXT_RECACHE_RATE , EXT_COMPACT_UNDER , EXT_DROP_UNDER , EXT_MAX_FRAG , EXT_DROP_UNREAD , SLAB_AUTOMOVE_FREERATIO , # endif } ; char * const subopts_tokens [ ] = { [ MAXCONNS_FAST ] = \"maxconns_fast\" , [ HASHPOWER_INIT ] = \"hashpower\" , [ NO_HASHEXPAND ] = \"no_hashexpand\" , [ SLAB_REASSIGN ] = \"slab_reassign\" , [ SLAB_AUTOMOVE ] = \"slab_automove\" , [ SLAB_AUTOMOVE_RATIO ] = \"slab_automove_ratio\" , [ SLAB_AUTOMOVE_WINDOW ] = \"slab_automove_window\" , [ TAIL_REPAIR_TIME ] = \"tail_repair_time\" , [ HASH_ALGORITHM ] = \"hash_algorithm\" , [ LRU_CRAWLER ] = \"lru_crawler\" , [ LRU_CRAWLER_SLEEP ] = \"lru_crawler_sleep\" , [ LRU_CRAWLER_TOCRAWL ] = \"lru_crawler_tocrawl\" , [ LRU_MAINTAINER ] = \"lru_maintainer\" , [ HOT_LRU_PCT ] = \"hot_lru_pct\" , [ WARM_LRU_PCT ] = \"warm_lru_pct\" , [ HOT_MAX_FACTOR ] = \"hot_max_factor\" , [ WARM_MAX_FACTOR ] = \"warm_max_factor\" , [ TEMPORARY_TTL ] = \"temporary_ttl\" , [ IDLE_TIMEOUT ] = \"idle_timeout\" , [ WATCHER_LOGBUF_SIZE ] = \"watcher_logbuf_size\" , [ WORKER_LOGBUF_SIZE ] = \"worker_logbuf_size\" , [ SLAB_SIZES ] = \"slab_sizes\" , [ SLAB_CHUNK_MAX ] = \"slab_chunk_max\" , [ TRACK_SIZES ] = \"track_sizes\" , [ NO_INLINE_ASCII_RESP ] = \"no_inline_ascii_resp\" , [ MODERN ] = \"modern\" , [ NO_MODERN ] = \"no_modern\" , [ NO_CHUNKED_ITEMS ] = \"no_chunked_items\" , [ NO_SLAB_REASSIGN ] = \"no_slab_reassign\" , [ NO_SLAB_AUTOMOVE ] = \"no_slab_automove\" , [ NO_MAXCONNS_FAST ] = \"no_maxconns_fast\" , [ INLINE_ASCII_RESP ] = \"inline_ascii_resp\" , [ NO_LRU_CRAWLER ] = \"no_lru_crawler\" , [ NO_LRU_MAINTAINER ] = \"no_lru_maintainer\" , [ NO_DROP_PRIVILEGES ] = \"no_drop_privileges\" , # ifdef MEMCACHED_DEBUG [ RELAXED_PRIVILEGES ] = \"relaxed_privileges\" , # endif # ifdef EXTSTORE [ EXT_PAGE_SIZE ] = \"ext_page_size\" , [ EXT_PAGE_COUNT ] = \"ext_page_count\" , [ EXT_WBUF_SIZE ] = \"ext_wbuf_size\" , [ EXT_THREADS ] = \"ext_threads\" , [ EXT_IO_DEPTH ] = \"ext_io_depth\" , [ EXT_PATH ] = \"ext_path\" , [ EXT_ITEM_SIZE ] = \"ext_item_size\" , [ EXT_ITEM_AGE ] = \"ext_item_age\" , [ EXT_LOW_TTL ] = \"ext_low_ttl\" , [ EXT_RECACHE_RATE ] = \"ext_recache_rate\" , [ EXT_COMPACT_UNDER ] = \"ext_compact_under\" , [ EXT_DROP_UNDER ] = \"ext_drop_under\" , [ EXT_MAX_FRAG ] = \"ext_max_frag\" , [ EXT_DROP_UNREAD ] = \"ext_drop_unread\" , [ SLAB_AUTOMOVE_FREERATIO ] = \"slab_automove_freeratio\" , # endif NULL } ; if ( ! sanitycheck ( ) ) { return EX_OSERR ; } signal ( SIGINT , sig_handler ) ; signal ( SIGTERM , sig_handler ) ; settings_init ( ) ; # ifdef EXTSTORE settings . ext_item_size = 512 ; settings . ext_item_age = UINT_MAX ; settings . ext_low_ttl = 0 ; settings . ext_recache_rate = 2000 ; settings . ext_max_frag = 0.8 ; settings . ext_drop_unread = false ; settings . ext_wbuf_size = 1024 * 1024 * 4 ; settings . ext_compact_under = 0 ; settings . ext_drop_under = 0 ; settings . slab_automove_freeratio = 0.01 ; ext_cf . page_size = 1024 * 1024 * 64 ; ext_cf . page_count = 64 ; ext_cf . wbuf_size = settings . ext_wbuf_size ; ext_cf . io_threadcount = 1 ; ext_cf . io_depth = 1 ; ext_cf . page_buckets = 4 ; ext_cf . wbuf_count = ext_cf . page_buckets ; # endif init_lru_maintainer ( ) ; setbuf ( stderr , NULL ) ; char * shortopts = \"a:\" \"A\" \"p:\" \"s:\" \"U:\" \"m:\" \"M\" \"c:\" \"k\" \"hiV\" \"r\" \"v\" \"d\" \"l:\" \"u:\" \"P:\" \"f:\" \"n:\" \"t:\" \"D:\" \"L\" \"R:\" \"C\" \"b:\" \"B:\" \"I:\" \"S\" \"F\" \"X\" \"o:\" ; # ifdef HAVE_GETOPT_LONG const struct option longopts [ ] = { { \"unix-mask\" , required_argument , 0 , 'a' } , { \"enable-shutdown\" , no_argument , 0 , 'A' } , { \"port\" , required_argument , 0 , 'p' } , { \"unix-socket\" , required_argument , 0 , 's' } , { \"udp-port\" , required_argument , 0 , 'U' } , { \"memory-limit\" , required_argument , 0 , 'm' } , { \"disable-evictions\" , no_argument , 0 , 'M' } , { \"conn-limit\" , required_argument , 0 , 'c' } , { \"lock-memory\" , no_argument , 0 , 'k' } , { \"help\" , no_argument , 0 , 'h' } , { \"license\" , no_argument , 0 , 'i' } , { \"version\" , no_argument , 0 , 'V' } , { \"enable-coredumps\" , no_argument , 0 , 'r' } , { \"verbose\" , optional_argument , 0 , 'v' } , { \"daemon\" , no_argument , 0 , 'd' } , { \"listen\" , required_argument , 0 , 'l' } , { \"user\" , required_argument , 0 , 'u' } , { \"pidfile\" , required_argument , 0 , 'P' } , { \"slab-growth-factor\" , required_argument , 0 , 'f' } , { \"slab-min-size\" , required_argument , 0 , 'n' } , { \"threads\" , required_argument , 0 , 't' } , { \"enable-largepages\" , no_argument , 0 , 'L' } , { \"max-reqs-per-event\" , required_argument , 0 , 'R' } , { \"disable-cas\" , no_argument , 0 , 'C' } , { \"listen-backlog\" , required_argument , 0 , 'b' } , { \"protocol\" , required_argument , 0 , 'B' } , { \"max-item-size\" , required_argument , 0 , 'I' } , { \"enable-sasl\" , no_argument , 0 , 'S' } , { \"disable-flush-all\" , no_argument , 0 , 'F' } , { \"disable-dumping\" , no_argument , 0 , 'X' } , { \"extended\" , required_argument , 0 , 'o' } , { 0 , 0 , 0 , 0 } } ; int optindex ; while ( - 1 != ( c = getopt_long ( argc , argv , shortopts , longopts , & optindex ) ) ) { # else while ( - 1 != ( c = getopt ( argc , argv , shortopts ) ) ) { # endif switch ( c ) { case 'A' : settings . shutdown_command = true ; break ; case 'a' : settings . access = strtol ( optarg , NULL , 8 ) ; break ; case 'U' : settings . udpport = atoi ( optarg ) ; udp_specified = true ; break ; case 'p' : settings . port = atoi ( optarg ) ; tcp_specified = true ; break ; case 's' : settings . socketpath = optarg ; break ; case 'm' : settings . maxbytes = ( ( size_t ) atoi ( optarg ) ) * 1024 * 1024 ; break ; case 'M' : settings . evict_to_free = 0 ; break ; case 'c' : settings . maxconns = atoi ( optarg ) ; if ( settings . maxconns <= 0 ) { fprintf ( stderr , \"Maximum<S2SV_blank>connections<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\\\\n\" ) ; return 1 ; } break ; case 'h' : usage ( ) ; exit ( EXIT_SUCCESS ) ; case 'i' : usage_license ( ) ; exit ( EXIT_SUCCESS ) ; case 'V' : printf ( PACKAGE \"<S2SV_blank>\" VERSION \"\\\\n\" ) ; exit ( EXIT_SUCCESS ) ; case 'k' : lock_memory = true ; break ; case 'v' : settings . verbose ++ ; break ; case 'l' : if ( settings . inter != NULL ) { if ( strstr ( settings . inter , optarg ) != NULL ) { break ; } size_t len = strlen ( settings . inter ) + strlen ( optarg ) + 2 ; char * p = malloc ( len ) ; if ( p == NULL ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\\\\n\" ) ; return 1 ; } snprintf ( p , len , \"%s,%s\" , settings . inter , optarg ) ; free ( settings . inter ) ; settings . inter = p ; } else { settings . inter = strdup ( optarg ) ; } break ; case 'd' : do_daemonize = true ; break ; case 'r' : maxcore = 1 ; break ; case 'R' : settings . reqs_per_event = atoi ( optarg ) ; if ( settings . reqs_per_event == 0 ) { fprintf ( stderr , \"Number<S2SV_blank>of<S2SV_blank>requests<S2SV_blank>per<S2SV_blank>event<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\\\\n\" ) ; return 1 ; } break ; case 'u' : username = optarg ; break ; case 'P' : pid_file = optarg ; break ; case 'f' : settings . factor = atof ( optarg ) ; if ( settings . factor <= 1.0 ) { fprintf ( stderr , \"Factor<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>1\\\\n\" ) ; return 1 ; } break ; case 'n' : settings . chunk_size = atoi ( optarg ) ; if ( settings . chunk_size == 0 ) { fprintf ( stderr , \"Chunk<S2SV_blank>size<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\\\\n\" ) ; return 1 ; } break ; case 't' : settings . num_threads = atoi ( optarg ) ; if ( settings . num_threads <= 0 ) { fprintf ( stderr , \"Number<S2SV_blank>of<S2SV_blank>threads<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\\\\n\" ) ; return 1 ; } if ( settings . num_threads > 64 ) { fprintf ( stderr , \"WARNING:<S2SV_blank>Setting<S2SV_blank>a<S2SV_blank>high<S2SV_blank>number<S2SV_blank>of<S2SV_blank>worker\" \"threads<S2SV_blank>is<S2SV_blank>not<S2SV_blank>recommended.\\\\n\" \"<S2SV_blank>Set<S2SV_blank>this<S2SV_blank>value<S2SV_blank>to<S2SV_blank>the<S2SV_blank>number<S2SV_blank>of<S2SV_blank>cores<S2SV_blank>in\" \"<S2SV_blank>your<S2SV_blank>machine<S2SV_blank>or<S2SV_blank>less.\\\\n\" ) ; } break ; case 'D' : if ( ! optarg || ! optarg [ 0 ] ) { fprintf ( stderr , \"No<S2SV_blank>delimiter<S2SV_blank>specified\\\\n\" ) ; return 1 ; } settings . prefix_delimiter = optarg [ 0 ] ; settings . detail_enabled = 1 ; break ; case 'L' : if ( enable_large_pages ( ) == 0 ) { preallocate = true ; } else { fprintf ( stderr , \"Cannot<S2SV_blank>enable<S2SV_blank>large<S2SV_blank>pages<S2SV_blank>on<S2SV_blank>this<S2SV_blank>system\\\\n\" \"(There<S2SV_blank>is<S2SV_blank>no<S2SV_blank>Linux<S2SV_blank>support<S2SV_blank>as<S2SV_blank>of<S2SV_blank>this<S2SV_blank>version)\\\\n\" ) ; return 1 ; } break ; case 'C' : settings . use_cas = false ; break ; case 'b' : settings . backlog = atoi ( optarg ) ; break ; case 'B' : protocol_specified = true ; if ( strcmp ( optarg , \"auto\" ) == 0 ) { settings . binding_protocol = negotiating_prot ; } else if ( strcmp ( optarg , \"binary\" ) == 0 ) { settings . binding_protocol = binary_prot ; } else if ( strcmp ( optarg , \"ascii\" ) == 0 ) { settings . binding_protocol = ascii_prot ; } else { fprintf ( stderr , \"Invalid<S2SV_blank>value<S2SV_blank>for<S2SV_blank>binding<S2SV_blank>protocol:<S2SV_blank>%s\\\\n\" \"<S2SV_blank>--<S2SV_blank>should<S2SV_blank>be<S2SV_blank>one<S2SV_blank>of<S2SV_blank>auto,<S2SV_blank>binary,<S2SV_blank>or<S2SV_blank>ascii\\\\n\" , optarg ) ; exit ( EX_USAGE ) ; } break ; case 'I' : buf = strdup ( optarg ) ; unit = buf [ strlen ( buf ) - 1 ] ; if ( unit == 'k' || unit == 'm' || unit == 'K' || unit == 'M' ) { buf [ strlen ( buf ) - 1 ] = '\\\\0' ; size_max = atoi ( buf ) ; if ( unit == 'k' || unit == 'K' ) size_max *= 1024 ; if ( unit == 'm' || unit == 'M' ) size_max *= 1024 * 1024 ; settings . item_size_max = size_max ; } else { settings . item_size_max = atoi ( buf ) ; } free ( buf ) ; break ; case 'S' : # ifndef ENABLE_SASL fprintf ( stderr , \"This<S2SV_blank>server<S2SV_blank>is<S2SV_blank>not<S2SV_blank>built<S2SV_blank>with<S2SV_blank>SASL<S2SV_blank>support.\\\\n\" ) ; exit ( EX_USAGE ) ; # endif settings . sasl = true ; break ; case 'F' : settings . flush_enabled = false ; break ; case 'X' : settings . dump_enabled = false ; break ; case 'o' : subopts_orig = subopts = strdup ( optarg ) ; while ( * subopts != '\\\\0' ) { switch ( getsubopt ( & subopts , subopts_tokens , & subopts_value ) ) { case MAXCONNS_FAST : settings . maxconns_fast = true ; break ; case HASHPOWER_INIT : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>numeric<S2SV_blank>argument<S2SV_blank>for<S2SV_blank>hashpower\\\\n\" ) ; return 1 ; } settings . hashpower_init = atoi ( subopts_value ) ; if ( settings . hashpower_init < 12 ) { fprintf ( stderr , \"Initial<S2SV_blank>hashtable<S2SV_blank>multiplier<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>low\\\\n\" , settings . hashpower_init ) ; return 1 ; } else if ( settings . hashpower_init > 32 ) { fprintf ( stderr , \"Initial<S2SV_blank>hashtable<S2SV_blank>multiplier<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>high\\\\n\" \"Choose<S2SV_blank>a<S2SV_blank>value<S2SV_blank>based<S2SV_blank>on<S2SV_blank>\\\\\"STAT<S2SV_blank>hash_power_level\\\\\"<S2SV_blank>from<S2SV_blank>a<S2SV_blank>running<S2SV_blank>instance\\\\n\" , settings . hashpower_init ) ; return 1 ; } break ; case NO_HASHEXPAND : start_assoc_maint = false ; break ; case SLAB_REASSIGN : settings . slab_reassign = true ; break ; case SLAB_AUTOMOVE : if ( subopts_value == NULL ) { settings . slab_automove = 1 ; break ; } settings . slab_automove = atoi ( subopts_value ) ; if ( settings . slab_automove < 0 || settings . slab_automove > 2 ) { fprintf ( stderr , \"slab_automove<S2SV_blank>must<S2SV_blank>be<S2SV_blank>between<S2SV_blank>0<S2SV_blank>and<S2SV_blank>2\\\\n\" ) ; return 1 ; } break ; case SLAB_AUTOMOVE_RATIO : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>slab_automove_ratio<S2SV_blank>argument\\\\n\" ) ; return 1 ; } settings . slab_automove_ratio = atof ( subopts_value ) ; if ( settings . slab_automove_ratio <= 0 || settings . slab_automove_ratio > 1 ) { fprintf ( stderr , \"slab_automove_ratio<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>0<S2SV_blank>and<S2SV_blank><<S2SV_blank>1\\\\n\" ) ; return 1 ; } break ; case SLAB_AUTOMOVE_WINDOW : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>slab_automove_window<S2SV_blank>argument\\\\n\" ) ; return 1 ; } settings . slab_automove_window = atoi ( subopts_value ) ; if ( settings . slab_automove_window < 3 ) { fprintf ( stderr , \"slab_automove_window<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>2\\\\n\" ) ; return 1 ; } break ; case TAIL_REPAIR_TIME : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>numeric<S2SV_blank>argument<S2SV_blank>for<S2SV_blank>tail_repair_time\\\\n\" ) ; return 1 ; } settings . tail_repair_time = atoi ( subopts_value ) ; if ( settings . tail_repair_time < 10 ) { fprintf ( stderr , \"Cannot<S2SV_blank>set<S2SV_blank>tail_repair_time<S2SV_blank>to<S2SV_blank>less<S2SV_blank>than<S2SV_blank>10<S2SV_blank>seconds\\\\n\" ) ; return 1 ; } break ; case HASH_ALGORITHM : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>hash_algorithm<S2SV_blank>argument\\\\n\" ) ; return 1 ; } ; if ( strcmp ( subopts_value , \"jenkins\" ) == 0 ) { hash_type = JENKINS_HASH ; } else if ( strcmp ( subopts_value , \"murmur3\" ) == 0 ) { hash_type = MURMUR3_HASH ; } else { fprintf ( stderr , \"Unknown<S2SV_blank>hash_algorithm<S2SV_blank>option<S2SV_blank>(jenkins,<S2SV_blank>murmur3)\\\\n\" ) ; return 1 ; } break ; case LRU_CRAWLER : start_lru_crawler = true ; break ; case LRU_CRAWLER_SLEEP : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>lru_crawler_sleep<S2SV_blank>value\\\\n\" ) ; return 1 ; } settings . lru_crawler_sleep = atoi ( subopts_value ) ; if ( settings . lru_crawler_sleep > 1000000 || settings . lru_crawler_sleep < 0 ) { fprintf ( stderr , \"LRU<S2SV_blank>crawler<S2SV_blank>sleep<S2SV_blank>must<S2SV_blank>be<S2SV_blank>between<S2SV_blank>0<S2SV_blank>and<S2SV_blank>1<S2SV_blank>second\\\\n\" ) ; return 1 ; } break ; case LRU_CRAWLER_TOCRAWL : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>lru_crawler_tocrawl<S2SV_blank>value\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & tocrawl ) ) { fprintf ( stderr , \"lru_crawler_tocrawl<S2SV_blank>takes<S2SV_blank>a<S2SV_blank>numeric<S2SV_blank>32bit<S2SV_blank>value\\\\n\" ) ; return 1 ; } settings . lru_crawler_tocrawl = tocrawl ; break ; case LRU_MAINTAINER : start_lru_maintainer = true ; settings . lru_segmented = true ; break ; case HOT_LRU_PCT : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>hot_lru_pct<S2SV_blank>argument\\\\n\" ) ; return 1 ; } settings . hot_lru_pct = atoi ( subopts_value ) ; if ( settings . hot_lru_pct < 1 || settings . hot_lru_pct >= 80 ) { fprintf ( stderr , \"hot_lru_pct<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>1<S2SV_blank>and<S2SV_blank><<S2SV_blank>80\\\\n\" ) ; return 1 ; } break ; case WARM_LRU_PCT : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>warm_lru_pct<S2SV_blank>argument\\\\n\" ) ; return 1 ; } settings . warm_lru_pct = atoi ( subopts_value ) ; if ( settings . warm_lru_pct < 1 || settings . warm_lru_pct >= 80 ) { fprintf ( stderr , \"warm_lru_pct<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>1<S2SV_blank>and<S2SV_blank><<S2SV_blank>80\\\\n\" ) ; return 1 ; } break ; case HOT_MAX_FACTOR : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>hot_max_factor<S2SV_blank>argument\\\\n\" ) ; return 1 ; } settings . hot_max_factor = atof ( subopts_value ) ; if ( settings . hot_max_factor <= 0 ) { fprintf ( stderr , \"hot_max_factor<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>0\\\\n\" ) ; return 1 ; } break ; case WARM_MAX_FACTOR : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>warm_max_factor<S2SV_blank>argument\\\\n\" ) ; return 1 ; } settings . warm_max_factor = atof ( subopts_value ) ; if ( settings . warm_max_factor <= 0 ) { fprintf ( stderr , \"warm_max_factor<S2SV_blank>must<S2SV_blank>be<S2SV_blank>><S2SV_blank>0\\\\n\" ) ; return 1 ; } break ; case TEMPORARY_TTL : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>temporary_ttl<S2SV_blank>argument\\\\n\" ) ; return 1 ; } settings . temp_lru = true ; settings . temporary_ttl = atoi ( subopts_value ) ; break ; case IDLE_TIMEOUT : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>numeric<S2SV_blank>argument<S2SV_blank>for<S2SV_blank>idle_timeout\\\\n\" ) ; return 1 ; } settings . idle_timeout = atoi ( subopts_value ) ; break ; case WATCHER_LOGBUF_SIZE : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>watcher_logbuf_size<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & settings . logger_watcher_buf_size ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>watcher_logbuf_size\\\\n\" ) ; return 1 ; } settings . logger_watcher_buf_size *= 1024 ; break ; case WORKER_LOGBUF_SIZE : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>worker_logbuf_size<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & settings . logger_buf_size ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>worker_logbuf_size\\\\n\" ) ; return 1 ; } settings . logger_buf_size *= 1024 ; case SLAB_SIZES : slab_sizes_unparsed = subopts_value ; break ; case SLAB_CHUNK_MAX : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>slab_chunk_max<S2SV_blank>argument\\\\n\" ) ; } if ( ! safe_strtol ( subopts_value , & settings . slab_chunk_size_max ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>slab_chunk_max\\\\n\" ) ; } slab_chunk_size_changed = true ; break ; case TRACK_SIZES : item_stats_sizes_init ( ) ; break ; case NO_INLINE_ASCII_RESP : settings . inline_ascii_response = false ; break ; case INLINE_ASCII_RESP : settings . inline_ascii_response = true ; break ; case NO_CHUNKED_ITEMS : settings . slab_chunk_size_max = settings . slab_page_size ; break ; case NO_SLAB_REASSIGN : settings . slab_reassign = false ; break ; case NO_SLAB_AUTOMOVE : settings . slab_automove = 0 ; break ; case NO_MAXCONNS_FAST : settings . maxconns_fast = false ; break ; case NO_LRU_CRAWLER : settings . lru_crawler = false ; start_lru_crawler = false ; break ; case NO_LRU_MAINTAINER : start_lru_maintainer = false ; settings . lru_segmented = false ; break ; # ifdef EXTSTORE case EXT_PAGE_SIZE : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_page_size<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & ext_cf . page_size ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_page_size\\\\n\" ) ; return 1 ; } ext_cf . page_size *= 1024 * 1024 ; break ; case EXT_PAGE_COUNT : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_page_count<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & ext_cf . page_count ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_page_count\\\\n\" ) ; return 1 ; } break ; case EXT_WBUF_SIZE : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_wbuf_size<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & ext_cf . wbuf_size ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_wbuf_size\\\\n\" ) ; return 1 ; } ext_cf . wbuf_size *= 1024 * 1024 ; settings . ext_wbuf_size = ext_cf . wbuf_size ; break ; case EXT_THREADS : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_threads<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & ext_cf . io_threadcount ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_threads\\\\n\" ) ; return 1 ; } break ; case EXT_IO_DEPTH : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_io_depth<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & ext_cf . io_depth ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_io_depth\\\\n\" ) ; return 1 ; } break ; case EXT_ITEM_SIZE : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_item_size<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & settings . ext_item_size ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_item_size\\\\n\" ) ; return 1 ; } break ; case EXT_ITEM_AGE : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_item_age<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & settings . ext_item_age ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_item_age\\\\n\" ) ; return 1 ; } break ; case EXT_LOW_TTL : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_low_ttl<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & settings . ext_low_ttl ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_low_ttl\\\\n\" ) ; return 1 ; } break ; case EXT_RECACHE_RATE : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_recache_rate<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & settings . ext_recache_rate ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_recache_rate\\\\n\" ) ; return 1 ; } break ; case EXT_COMPACT_UNDER : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_compact_under<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & settings . ext_compact_under ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_compact_under\\\\n\" ) ; return 1 ; } break ; case EXT_DROP_UNDER : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_drop_under<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtoul ( subopts_value , & settings . ext_drop_under ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_drop_under\\\\n\" ) ; return 1 ; } break ; case EXT_MAX_FRAG : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>ext_max_frag<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtod ( subopts_value , & settings . ext_max_frag ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>ext_max_frag\\\\n\" ) ; return 1 ; } break ; case SLAB_AUTOMOVE_FREERATIO : if ( subopts_value == NULL ) { fprintf ( stderr , \"Missing<S2SV_blank>slab_automove_freeratio<S2SV_blank>argument\\\\n\" ) ; return 1 ; } if ( ! safe_strtod ( subopts_value , & settings . slab_automove_freeratio ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>argument<S2SV_blank>to<S2SV_blank>slab_automove_freeratio\\\\n\" ) ; return 1 ; } break ; case EXT_DROP_UNREAD : settings . ext_drop_unread = true ; break ; case EXT_PATH : storage_file = strdup ( subopts_value ) ; break ; # endif case MODERN : break ; case NO_MODERN : if ( ! slab_chunk_size_changed ) { settings . slab_chunk_size_max = settings . slab_page_size ; } settings . slab_reassign = false ; settings . slab_automove = 0 ; settings . maxconns_fast = false ; settings . inline_ascii_response = true ; settings . lru_segmented = false ; hash_type = JENKINS_HASH ; start_lru_crawler = false ; start_lru_maintainer = false ; break ; case NO_DROP_PRIVILEGES : settings . drop_privileges = false ; break ; # ifdef MEMCACHED_DEBUG case RELAXED_PRIVILEGES : settings . relaxed_privileges = true ; break ; # endif default : printf ( \"Illegal<S2SV_blank>suboption<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , subopts_value ) ; return 1 ; } } free ( subopts_orig ) ; break ; default : fprintf ( stderr , \"Illegal<S2SV_blank>argument<S2SV_blank>\\\\\"%c\\\\\"\\\\n\" , c ) ; return 1 ; } } if ( settings . item_size_max < 1024 ) { fprintf ( stderr , \"Item<S2SV_blank>max<S2SV_blank>size<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>less<S2SV_blank>than<S2SV_blank>1024<S2SV_blank>bytes.\\\\n\" ) ; exit ( EX_USAGE ) ; } if ( settings . item_size_max > ( settings . maxbytes / 2 ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>set<S2SV_blank>item<S2SV_blank>size<S2SV_blank>limit<S2SV_blank>higher<S2SV_blank>than<S2SV_blank>1/2<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>max.\\\\n\" ) ; exit ( EX_USAGE ) ; } if ( settings . item_size_max > ( 1024 * 1024 * 1024 ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>set<S2SV_blank>item<S2SV_blank>size<S2SV_blank>limit<S2SV_blank>higher<S2SV_blank>than<S2SV_blank>a<S2SV_blank>gigabyte.\\\\n\" ) ; exit ( EX_USAGE ) ; } if ( settings . item_size_max > 1024 * 1024 ) { if ( ! slab_chunk_size_changed ) { settings . slab_chunk_size_max = settings . slab_page_size / 2 ; } } if ( settings . slab_chunk_size_max > settings . item_size_max ) { fprintf ( stderr , \"slab_chunk_max<S2SV_blank>(bytes:<S2SV_blank>%d)<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>-I<S2SV_blank>(item_size_max<S2SV_blank>%d)\\\\n\" , settings . slab_chunk_size_max , settings . item_size_max ) ; exit ( EX_USAGE ) ; } if ( settings . item_size_max % settings . slab_chunk_size_max != 0 ) { fprintf ( stderr , \"-I<S2SV_blank>(item_size_max:<S2SV_blank>%d)<S2SV_blank>must<S2SV_blank>be<S2SV_blank>evenly<S2SV_blank>divisible<S2SV_blank>by<S2SV_blank>slab_chunk_max<S2SV_blank>(bytes:<S2SV_blank>%d)\\\\n\" , settings . item_size_max , settings . slab_chunk_size_max ) ; exit ( EX_USAGE ) ; } if ( settings . slab_page_size % settings . slab_chunk_size_max != 0 ) { fprintf ( stderr , \"slab_chunk_max<S2SV_blank>(bytes:<S2SV_blank>%d)<S2SV_blank>must<S2SV_blank>divide<S2SV_blank>evenly<S2SV_blank>into<S2SV_blank>%d<S2SV_blank>(slab_page_size)\\\\n\" , settings . slab_chunk_size_max , settings . slab_page_size ) ; exit ( EX_USAGE ) ; } # ifdef EXTSTORE if ( storage_file ) { if ( settings . item_size_max > ext_cf . wbuf_size ) { fprintf ( stderr , \"-I<S2SV_blank>(item_size_max:<S2SV_blank>%d)<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>ext_wbuf_size:<S2SV_blank>%d\\\\n\" , settings . item_size_max , ext_cf . wbuf_size ) ; exit ( EX_USAGE ) ; } if ( settings . inline_ascii_response ) { fprintf ( stderr , \"Cannot<S2SV_blank>use<S2SV_blank>inline_ascii_response<S2SV_blank>with<S2SV_blank>extstore<S2SV_blank>enabled\\\\n\" ) ; exit ( EX_USAGE ) ; } if ( settings . udpport ) { fprintf ( stderr , \"Cannot<S2SV_blank>use<S2SV_blank>UDP<S2SV_blank>with<S2SV_blank>extstore<S2SV_blank>enabled<S2SV_blank>(-U<S2SV_blank>0<S2SV_blank>to<S2SV_blank>disable)\\\\n\" ) ; exit ( EX_USAGE ) ; } } # endif if ( slab_sizes_unparsed != NULL ) { if ( _parse_slab_sizes ( slab_sizes_unparsed , slab_sizes ) ) { use_slab_sizes = true ; } else { exit ( EX_USAGE ) ; } } if ( settings . hot_lru_pct + settings . warm_lru_pct > 80 ) { fprintf ( stderr , \"hot_lru_pct<S2SV_blank>+<S2SV_blank>warm_lru_pct<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>more<S2SV_blank>than<S2SV_blank>80%%<S2SV_blank>combined\\\\n\" ) ; exit ( EX_USAGE ) ; } if ( settings . temp_lru && ! start_lru_maintainer ) { fprintf ( stderr , \"temporary_ttl<S2SV_blank>requires<S2SV_blank>lru_maintainer<S2SV_blank>to<S2SV_blank>be<S2SV_blank>enabled\\\\n\" ) ; exit ( EX_USAGE ) ; } if ( hash_init ( hash_type ) != 0 ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>hash_algorithm!\\\\n\" ) ; exit ( EX_USAGE ) ; } if ( settings . inter != NULL && strchr ( settings . inter , ',' ) ) { settings . num_threads_per_udp = 1 ; } else { settings . num_threads_per_udp = settings . num_threads ; } if ( settings . sasl ) { if ( ! protocol_specified ) { settings . binding_protocol = binary_prot ; } else { if ( settings . binding_protocol != binary_prot ) { fprintf ( stderr , \"ERROR:<S2SV_blank>You<S2SV_blank>cannot<S2SV_blank>allow<S2SV_blank>the<S2SV_blank>ASCII<S2SV_blank>protocol<S2SV_blank>while<S2SV_blank>using<S2SV_blank>SASL.\\\\n\" ) ; exit ( EX_USAGE ) ; } } } <S2SV_StartBug> if ( tcp_specified && settings . port != 0 && ! udp_specified ) { <S2SV_EndBug> settings . udpport = settings . port ; } else if ( udp_specified && settings . udpport != 0 && ! tcp_specified ) { settings . port = settings . udpport ; } if ( maxcore != 0 ) { struct rlimit rlim_new ; if ( getrlimit ( RLIMIT_CORE , & rlim ) == 0 ) { rlim_new . rlim_cur = rlim_new . rlim_max = RLIM_INFINITY ; if ( setrlimit ( RLIMIT_CORE , & rlim_new ) != 0 ) { rlim_new . rlim_cur = rlim_new . rlim_max = rlim . rlim_max ; ( void ) setrlimit ( RLIMIT_CORE , & rlim_new ) ; } } if ( ( getrlimit ( RLIMIT_CORE , & rlim ) != 0 ) || rlim . rlim_cur == 0 ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>ensure<S2SV_blank>corefile<S2SV_blank>creation\\\\n\" ) ; exit ( EX_OSERR ) ; } } if ( getrlimit ( RLIMIT_NOFILE , & rlim ) != 0 ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>getrlimit<S2SV_blank>number<S2SV_blank>of<S2SV_blank>files\\\\n\" ) ; exit ( EX_OSERR ) ; } else { rlim . rlim_cur = settings . maxconns ; rlim . rlim_max = settings . maxconns ; if ( setrlimit ( RLIMIT_NOFILE , & rlim ) != 0 ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>rlimit<S2SV_blank>for<S2SV_blank>open<S2SV_blank>files.<S2SV_blank>Try<S2SV_blank>starting<S2SV_blank>as<S2SV_blank>root<S2SV_blank>or<S2SV_blank>requesting<S2SV_blank>smaller<S2SV_blank>maxconns<S2SV_blank>value.\\\\n\" ) ; exit ( EX_OSERR ) ; } } if ( getuid ( ) == 0 || geteuid ( ) == 0 ) { if ( username == 0 || * username == '\\\\0' ) { fprintf ( stderr , \"can\\'t<S2SV_blank>run<S2SV_blank>as<S2SV_blank>root<S2SV_blank>without<S2SV_blank>the<S2SV_blank>-u<S2SV_blank>switch\\\\n\" ) ; exit ( EX_USAGE ) ; } if ( ( pw = getpwnam ( username ) ) == 0 ) { fprintf ( stderr , \"can\\'t<S2SV_blank>find<S2SV_blank>the<S2SV_blank>user<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>switch<S2SV_blank>to\\\\n\" , username ) ; exit ( EX_NOUSER ) ; } if ( setgid ( pw -> pw_gid ) < 0 || setuid ( pw -> pw_uid ) < 0 ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>assume<S2SV_blank>identity<S2SV_blank>of<S2SV_blank>user<S2SV_blank>%s\\\\n\" , username ) ; exit ( EX_OSERR ) ; } } if ( settings . sasl ) { init_sasl ( ) ; } if ( do_daemonize ) { if ( sigignore ( SIGHUP ) == - 1 ) { perror ( \"Failed<S2SV_blank>to<S2SV_blank>ignore<S2SV_blank>SIGHUP\" ) ; } if ( daemonize ( maxcore , settings . verbose ) == - 1 ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>daemon()<S2SV_blank>in<S2SV_blank>order<S2SV_blank>to<S2SV_blank>daemonize\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } } if ( lock_memory ) { # ifdef HAVE_MLOCKALL int res = mlockall ( MCL_CURRENT | MCL_FUTURE ) ; if ( res != 0 ) { fprintf ( stderr , \"warning:<S2SV_blank>-k<S2SV_blank>invalid,<S2SV_blank>mlockall()<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; } # else fprintf ( stderr , \"warning:<S2SV_blank>-k<S2SV_blank>invalid,<S2SV_blank>mlockall()<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>on<S2SV_blank>this<S2SV_blank>platform.<S2SV_blank><S2SV_blank>proceeding<S2SV_blank>without.\\\\n\" ) ; # endif } # if defined ( LIBEVENT_VERSION_NUMBER ) && LIBEVENT_VERSION_NUMBER >= 0x02000101 struct event_config * ev_config ; ev_config = event_config_new ( ) ; event_config_set_flag ( ev_config , EVENT_BASE_FLAG_NOLOCK ) ; main_base = event_base_new_with_config ( ev_config ) ; event_config_free ( ev_config ) ; # else main_base = event_init ( ) ; # endif logger_init ( ) ; stats_init ( ) ; assoc_init ( settings . hashpower_init ) ; conn_init ( ) ; slabs_init ( settings . maxbytes , settings . factor , preallocate , use_slab_sizes ? slab_sizes : NULL ) ; # ifdef EXTSTORE if ( storage_file ) { enum extstore_res eres ; if ( settings . ext_compact_under == 0 ) { settings . ext_compact_under = ext_cf . page_count / 4 ; settings . ext_drop_under = ext_cf . page_count / 4 ; } crc32c_init ( ) ; for ( int x = 0 ; x < MAX_NUMBER_OF_SLAB_CLASSES ; x ++ ) { settings . ext_free_memchunks [ x ] = 0 ; } storage = extstore_init ( storage_file , & ext_cf , & eres ) ; if ( storage == NULL ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>external<S2SV_blank>storage:<S2SV_blank>%s\\\\n\" , extstore_err ( eres ) ) ; if ( eres == EXTSTORE_INIT_OPEN_FAIL ) { perror ( \"extstore<S2SV_blank>open\" ) ; } exit ( EXIT_FAILURE ) ; } ext_storage = storage ; slabs_prefill_global ( ) ; } # endif if ( sigignore ( SIGPIPE ) == - 1 ) { perror ( \"failed<S2SV_blank>to<S2SV_blank>ignore<S2SV_blank>SIGPIPE;<S2SV_blank>sigaction\" ) ; exit ( EX_OSERR ) ; } # ifdef EXTSTORE slabs_set_storage ( storage ) ; memcached_thread_init ( settings . num_threads , storage ) ; init_lru_crawler ( storage ) ; # else memcached_thread_init ( settings . num_threads , NULL ) ; init_lru_crawler ( NULL ) ; # endif if ( start_assoc_maint && start_assoc_maintenance_thread ( ) == - 1 ) { exit ( EXIT_FAILURE ) ; } if ( start_lru_crawler && start_item_crawler_thread ( ) != 0 ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>LRU<S2SV_blank>crawler<S2SV_blank>thread\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } # ifdef EXTSTORE if ( storage && start_storage_compact_thread ( storage ) != 0 ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>start<S2SV_blank>storage<S2SV_blank>compaction<S2SV_blank>thread\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( start_lru_maintainer && start_lru_maintainer_thread ( storage ) != 0 ) { # else if ( start_lru_maintainer && start_lru_maintainer_thread ( NULL ) != 0 ) { # endif fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>enable<S2SV_blank>LRU<S2SV_blank>maintainer<S2SV_blank>thread\\\\n\" ) ; return 1 ; } if ( settings . slab_reassign && start_slab_maintenance_thread ( ) == - 1 ) { exit ( EXIT_FAILURE ) ; } if ( settings . idle_timeout && start_conn_timeout_thread ( ) == - 1 ) { exit ( EXIT_FAILURE ) ; } clock_handler ( 0 , 0 , 0 ) ; if ( settings . socketpath != NULL ) { errno = 0 ; if ( server_socket_unix ( settings . socketpath , settings . access ) ) { vperror ( \"failed<S2SV_blank>to<S2SV_blank>listen<S2SV_blank>on<S2SV_blank>UNIX<S2SV_blank>socket:<S2SV_blank>%s\" , settings . socketpath ) ; exit ( EX_OSERR ) ; } } if ( settings . socketpath == NULL ) { const char * portnumber_filename = getenv ( \"MEMCACHED_PORT_FILENAME\" ) ; char * temp_portnumber_filename = NULL ; size_t len ; FILE * portnumber_file = NULL ; if ( portnumber_filename != NULL ) { len = strlen ( portnumber_filename ) + 4 + 1 ; temp_portnumber_filename = malloc ( len ) ; snprintf ( temp_portnumber_filename , len , \"%s.lck\" , portnumber_filename ) ; portnumber_file = fopen ( temp_portnumber_filename , \"a\" ) ; if ( portnumber_file == NULL ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>\\\\\"%s\\\\\":<S2SV_blank>%s\\\\n\" , temp_portnumber_filename , strerror ( errno ) ) ; } } errno = 0 ; if ( settings . port && server_sockets ( settings . port , tcp_transport , portnumber_file ) ) { vperror ( \"failed<S2SV_blank>to<S2SV_blank>listen<S2SV_blank>on<S2SV_blank>TCP<S2SV_blank>port<S2SV_blank>%d\" , settings . port ) ; exit ( EX_OSERR ) ; } errno = 0 ; if ( settings . udpport && server_sockets ( settings . udpport , udp_transport , portnumber_file ) ) { vperror ( \"failed<S2SV_blank>to<S2SV_blank>listen<S2SV_blank>on<S2SV_blank>UDP<S2SV_blank>port<S2SV_blank>%d\" , settings . udpport ) ; exit ( EX_OSERR ) ; } if ( portnumber_file ) { fclose ( portnumber_file ) ; rename ( temp_portnumber_filename , portnumber_filename ) ; } if ( temp_portnumber_filename ) free ( temp_portnumber_filename ) ; } usleep ( 1000 ) ; if ( stats_state . curr_conns + stats_state . reserved_fds >= settings . maxconns - 1 ) { fprintf ( stderr , \"Maxconns<S2SV_blank>setting<S2SV_blank>is<S2SV_blank>too<S2SV_blank>low,<S2SV_blank>use<S2SV_blank>-c<S2SV_blank>to<S2SV_blank>increase.\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } if ( pid_file != NULL ) { save_pid ( pid_file ) ; } if ( settings . drop_privileges ) { drop_privileges ( ) ; } uriencode_init ( ) ; if ( event_base_loop ( main_base , 0 ) != 0 ) { retval = EXIT_FAILURE ; } stop_assoc_maintenance_thread ( ) ; if ( do_daemonize ) remove_pidfile ( pid_file ) ; if ( settings . inter ) free ( settings . inter ) ; if ( l_socket ) free ( l_socket ) ; if ( u_socket ) free ( u_socket ) ; event_base_free ( main_base ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( <S2SV_ModEnd> udp_specified && settings\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * rename_principal_2_svc ( rprinc_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; <S2SV_StartBug> char * prime_arg1 , <S2SV_EndBug> * prime_arg2 ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; restriction_t * rp ; const char * errmsg = NULL ; size_t tlen1 , tlen2 , clen , slen ; char * tdots1 , * tdots2 , * cdots , * sdots ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> src , & prime_arg1 ) || krb5_unparse_name ( handle -> context , arg -> dest , & prime_arg2 ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } tlen1 = strlen ( prime_arg1 ) ; trunc_name ( & tlen1 , & tdots1 ) ; tlen2 = strlen ( prime_arg2 ) ; trunc_name ( & tlen2 , & tdots2 ) ; clen = client_name . length ; trunc_name ( & clen , & cdots ) ; slen = service_name . length ; trunc_name ( & slen , & sdots ) ; ret . code = KADM5_OK ; if ( ! CHANGEPW_SERVICE ( rqstp ) ) { if ( ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_DELETE , arg -> src , NULL ) ) ret . code = KADM5_AUTH_DELETE ; if ( ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_ADD , arg -> dest , & rp ) || rp ) { if ( ret . code == KADM5_AUTH_DELETE ) ret . code = KADM5_AUTH_INSUFFICIENT ; else ret . code = KADM5_AUTH_ADD ; } } else ret . code = KADM5_AUTH_INSUFFICIENT ; if ( ret . code != KADM5_OK ) { krb5_klog_syslog ( LOG_NOTICE , _ ( \"Unauthorized<S2SV_blank>request:<S2SV_blank>kadm5_rename_principal,<S2SV_blank>\" \"%.*s%s<S2SV_blank>to<S2SV_blank>%.*s%s,<S2SV_blank>\" \"client=%.*s%s,<S2SV_blank>service=%.*s%s,<S2SV_blank>addr=%s\" ) , ( int ) tlen1 , prime_arg1 , tdots1 , ( int ) tlen2 , prime_arg2 , tdots2 , ( int ) clen , ( char * ) client_name . value , cdots , ( int ) slen , ( char * ) service_name . value , sdots , client_addr ( rqstp -> rq_xprt ) ) ; } else { ret . code = kadm5_rename_principal ( ( void * ) handle , arg -> src , arg -> dest ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; krb5_klog_syslog ( LOG_NOTICE , _ ( \"Request:<S2SV_blank>kadm5_rename_principal,<S2SV_blank>\" \"%.*s%s<S2SV_blank>to<S2SV_blank>%.*s%s,<S2SV_blank>%s,<S2SV_blank>\" \"client=%.*s%s,<S2SV_blank>service=%.*s%s,<S2SV_blank>addr=%s\" ) , ( int ) tlen1 , prime_arg1 , tdots1 , ( int ) tlen2 , prime_arg2 , tdots2 , errmsg ? errmsg : _ ( \"success\" ) , ( int ) clen , ( char * ) client_name . value , cdots , ( int ) slen , ( char * ) service_name . value , sdots , client_addr ( rqstp -> rq_xprt ) ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } <S2SV_StartBug> free ( prime_arg1 ) ; <S2SV_EndBug> free ( prime_arg2 ) ; gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * prime_arg1 = NULL , * prime_arg2 = NULL <S2SV_ModEnd> ; gss_buffer_desc client_name <S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> ) ; } exit_func : free ( prime_arg1 ) ; free ( prime_arg2 ) ; gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0402\n\n```\nCWE-200 int equalizer_get_parameter ( effect_context_t * context , effect_param_t * p , uint32_t * size ) { equalizer_context_t * eq_ctxt = ( equalizer_context_t * ) context ; int voffset = ( ( p -> psize - 1 ) / sizeof ( int32_t ) + 1 ) * sizeof ( int32_t ) ; int32_t * param_tmp = ( int32_t * ) p -> data ; int32_t param = * param_tmp ++ ; int32_t param2 ; char * name ; void * value = p -> data + voffset ; int i ; ALOGV ( \"%s\" , __func__ ) ; p -> status = 0 ; switch ( param ) { case EQ_PARAM_NUM_BANDS : case EQ_PARAM_CUR_PRESET : case EQ_PARAM_GET_NUM_OF_PRESETS : case EQ_PARAM_BAND_LEVEL : case EQ_PARAM_GET_BAND : if ( p -> vsize < sizeof ( int16_t ) ) p -> status = - EINVAL ; p -> vsize = sizeof ( int16_t ) ; break ; case EQ_PARAM_LEVEL_RANGE : if ( p -> vsize < 2 * sizeof ( int16_t ) ) p -> status = - EINVAL ; p -> vsize = 2 * sizeof ( int16_t ) ; break ; case EQ_PARAM_BAND_FREQ_RANGE : if ( p -> vsize < 2 * sizeof ( int32_t ) ) p -> status = - EINVAL ; p -> vsize = 2 * sizeof ( int32_t ) ; break ; case EQ_PARAM_CENTER_FREQ : if ( p -> vsize < sizeof ( int32_t ) ) p -> status = - EINVAL ; p -> vsize = sizeof ( int32_t ) ; break ; case EQ_PARAM_GET_PRESET_NAME : break ; case EQ_PARAM_PROPERTIES : if ( p -> vsize < ( 2 + NUM_EQ_BANDS ) * sizeof ( uint16_t ) ) p -> status = - EINVAL ; p -> vsize = ( 2 + NUM_EQ_BANDS ) * sizeof ( uint16_t ) ; break ; default : p -> status = - EINVAL ; } * size = sizeof ( effect_param_t ) + voffset + p -> vsize ; if ( p -> status != 0 ) return 0 ; switch ( param ) { case EQ_PARAM_NUM_BANDS : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_NUM_BANDS\" , __func__ ) ; * ( uint16_t * ) value = ( uint16_t ) NUM_EQ_BANDS ; break ; case EQ_PARAM_LEVEL_RANGE : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_LEVEL_RANGE\" , __func__ ) ; * ( int16_t * ) value = - 1500 ; * ( ( int16_t * ) value + 1 ) = 1500 ; break ; case EQ_PARAM_BAND_LEVEL : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_BAND_LEVEL\" , __func__ ) ; param2 = * param_tmp ; <S2SV_StartBug> if ( param2 >= NUM_EQ_BANDS ) { <S2SV_EndBug> p -> status = - EINVAL ; <S2SV_StartBug> break ; <S2SV_EndBug> } * ( int16_t * ) value = ( int16_t ) equalizer_get_band_level ( eq_ctxt , param2 ) ; break ; case EQ_PARAM_CENTER_FREQ : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_CENTER_FREQ\" , __func__ ) ; param2 = * param_tmp ; <S2SV_StartBug> if ( param2 >= NUM_EQ_BANDS ) { <S2SV_EndBug> p -> status = - EINVAL ; <S2SV_StartBug> break ; <S2SV_EndBug> } * ( int32_t * ) value = equalizer_get_center_frequency ( eq_ctxt , param2 ) ; break ; case EQ_PARAM_BAND_FREQ_RANGE : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_BAND_FREQ_RANGE\" , __func__ ) ; param2 = * param_tmp ; <S2SV_StartBug> if ( param2 >= NUM_EQ_BANDS ) { <S2SV_EndBug> <S2SV_StartBug> p -> status = - EINVAL ; <S2SV_EndBug> break ; } equalizer_get_band_freq_range ( eq_ctxt , param2 , ( uint32_t * ) value , ( ( uint32_t * ) value + 1 ) ) ; break ; case EQ_PARAM_GET_BAND : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_GET_BAND\" , __func__ ) ; param2 = * param_tmp ; * ( uint16_t * ) value = ( uint16_t ) equalizer_get_band ( eq_ctxt , param2 ) ; break ; case EQ_PARAM_CUR_PRESET : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_CUR_PRESET\" , __func__ ) ; * ( uint16_t * ) value = ( uint16_t ) equalizer_get_preset ( eq_ctxt ) ; break ; case EQ_PARAM_GET_NUM_OF_PRESETS : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_GET_NUM_OF_PRESETS\" , __func__ ) ; * ( uint16_t * ) value = ( uint16_t ) equalizer_get_num_presets ( eq_ctxt ) ; break ; case EQ_PARAM_GET_PRESET_NAME : ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_GET_PRESET_NAME\" , __func__ ) ; param2 = * param_tmp ; ALOGV ( \"param2:<S2SV_blank>%d\" , param2 ) ; if ( param2 >= equalizer_get_num_presets ( eq_ctxt ) ) { p -> status = - EINVAL ; break ; } name = ( char * ) value ; strlcpy ( name , equalizer_get_preset_name ( eq_ctxt , param2 ) , p -> vsize - 1 ) ; name [ p -> vsize - 1 ] = 0 ; p -> vsize = strlen ( name ) + 1 ; break ; case EQ_PARAM_PROPERTIES : { ALOGV ( \"%s:<S2SV_blank>EQ_PARAM_PROPERTIES\" , __func__ ) ; int16_t * prop = ( int16_t * ) value ; prop [ 0 ] = ( int16_t ) equalizer_get_preset ( eq_ctxt ) ; prop [ 1 ] = ( int16_t ) NUM_EQ_BANDS ; for ( i = 0 ; i < NUM_EQ_BANDS ; i ++ ) { prop [ 2 + i ] = ( int16_t ) equalizer_get_band_level ( eq_ctxt , i ) ; } } break ; default : p -> status = - EINVAL ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( param2 < 0 || param2 <S2SV_ModStart> - EINVAL ; if ( param2 < 0 ) { android_errorWriteLog ( 0x534e4554 , \"32438598\" ) ; ALOGW ( \"\\\\tERROR<S2SV_blank>EQ_PARAM_BAND_LEVEL<S2SV_blank>band<S2SV_blank>%d\" , param2 ) ; } <S2SV_ModStart> ; if ( param2 < 0 || <S2SV_ModStart> - EINVAL ; if ( param2 < 0 ) { android_errorWriteLog ( 0x534e4554 , \"32436341\" ) ; ALOGW ( \"\\\\tERROR<S2SV_blank>EQ_PARAM_CENTER_FREQ<S2SV_blank>band<S2SV_blank>%d\" , param2 ) ; } <S2SV_ModStart> ; if ( param2 < 0 || <S2SV_ModStart> - EINVAL ; if ( param2 < 0 ) { android_errorWriteLog ( 0x534e4554 , \"32247948\" ) ; ALOGW ( \"\\\\tERROR<S2SV_blank>EQ_PARAM_BAND_FREQ_RANGE<S2SV_blank>band<S2SV_blank>%d\" , param2 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14040\n\n```\nCWE-787 static int tga_readheader ( FILE * fp , unsigned int * bits_per_pixel , unsigned int * width , unsigned int * height , int * flip_image ) { int palette_size ; unsigned char tga [ TGA_HEADER_SIZE ] ; unsigned char id_len , image_type ; unsigned char pixel_depth , image_desc ; unsigned short cmap_len , cmap_entry_size ; unsigned short image_w , image_h ; if ( ! bits_per_pixel || ! width || ! height || ! flip_image ) { return 0 ; } if ( fread ( tga , TGA_HEADER_SIZE , 1 , fp ) != 1 ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; return 0 ; } id_len = tga [ 0 ] ; image_type = tga [ 2 ] ; <S2SV_StartBug> cmap_len = get_ushort ( & tga [ 5 ] ) ; <S2SV_EndBug> cmap_entry_size = tga [ 7 ] ; # if 0 <S2SV_StartBug> x_origin = get_ushort ( & tga [ 8 ] ) ; <S2SV_EndBug> <S2SV_StartBug> y_origin = get_ushort ( & tga [ 10 ] ) ; <S2SV_EndBug> # endif <S2SV_StartBug> image_w = get_ushort ( & tga [ 12 ] ) ; <S2SV_EndBug> <S2SV_StartBug> image_h = get_ushort ( & tga [ 14 ] ) ; <S2SV_EndBug> pixel_depth = tga [ 16 ] ; image_desc = tga [ 17 ] ; * bits_per_pixel = ( unsigned int ) pixel_depth ; * width = ( unsigned int ) image_w ; * height = ( unsigned int ) image_h ; if ( id_len ) { unsigned char * id = ( unsigned char * ) malloc ( id_len ) ; if ( id == 0 ) { fprintf ( stderr , \"tga_readheader:<S2SV_blank>memory<S2SV_blank>out\\\\n\" ) ; return 0 ; } if ( ! fread ( id , id_len , 1 , fp ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; free ( id ) ; return 0 ; } free ( id ) ; } if ( image_type > 8 ) { fprintf ( stderr , \"Sorry,<S2SV_blank>compressed<S2SV_blank>tga<S2SV_blank>files<S2SV_blank>are<S2SV_blank>not<S2SV_blank>currently<S2SV_blank>supported.\\\\n\" ) ; return 0 ; } * flip_image = ! ( image_desc & 32 ) ; palette_size = cmap_len * ( cmap_entry_size / 8 ) ; if ( palette_size > 0 ) { fprintf ( stderr , \"File<S2SV_blank>contains<S2SV_blank>a<S2SV_blank>palette<S2SV_blank>-<S2SV_blank>not<S2SV_blank>yet<S2SV_blank>supported.\" ) ; fseek ( fp , palette_size , SEEK_CUR ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; cmap_len = get_tga_ushort <S2SV_ModEnd> ( & tga <S2SV_ModStart> 0 x_origin = get_tga_ushort <S2SV_ModEnd> ( & tga <S2SV_ModStart> ; y_origin = get_tga_ushort <S2SV_ModEnd> ( & tga <S2SV_ModStart> endif image_w = get_tga_ushort <S2SV_ModEnd> ( & tga <S2SV_ModStart> ; image_h = get_tga_ushort <S2SV_ModEnd> ( & tga\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4501\n\n```\nCWE-119 bool initiate_stratum ( struct pool * pool ) { bool ret = false , recvd = false , noresume = false , sockd = false ; char s [ RBUFSIZE ] , * sret = NULL , * nonce1 , * sessionid ; json_t * val = NULL , * res_val , * err_val ; json_error_t err ; int n2size ; resend : if ( ! setup_stratum_socket ( pool ) ) { sockd = false ; goto out ; } sockd = true ; if ( recvd ) { clear_sock ( pool ) ; sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[]}\" , swork_id ++ ) ; } else { if ( pool -> sessionid ) sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[\\\\\"\" PACKAGE \"/\" VERSION \"\\\\\",<S2SV_blank>\\\\\"%s\\\\\"]}\" , swork_id ++ , pool -> sessionid ) ; else sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[\\\\\"\" PACKAGE \"/\" VERSION \"\\\\\"]}\" , swork_id ++ ) ; } if ( __stratum_send ( pool , s , strlen ( s ) ) != SEND_OK ) { applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>s<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } if ( ! socket_full ( pool , DEFAULT_SOCKWAIT ) ) { applog ( LOG_DEBUG , \"Timed<S2SV_blank>out<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>response<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } sret = recv_line ( pool ) ; if ( ! sret ) goto out ; recvd = true ; val = JSON_LOADS ( sret , & err ) ; free ( sret ) ; if ( ! val ) { applog ( LOG_INFO , \"JSON<S2SV_blank>decode<S2SV_blank>failed(%d):<S2SV_blank>%s\" , err . line , err . text ) ; goto out ; } res_val = json_object_get ( val , \"result\" ) ; err_val = json_object_get ( val , \"error\" ) ; if ( ! res_val || json_is_null ( res_val ) || ( err_val && ! json_is_null ( err_val ) ) ) { char * ss ; if ( err_val ) ss = json_dumps ( err_val , JSON_INDENT ( 3 ) ) ; else ss = strdup ( \"(unknown<S2SV_blank>reason)\" ) ; applog ( LOG_INFO , \"JSON-RPC<S2SV_blank>decode<S2SV_blank>failed:<S2SV_blank>%s\" , ss ) ; free ( ss ) ; goto out ; } sessionid = get_sessionid ( res_val ) ; if ( ! sessionid ) applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>sessionid<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; nonce1 = json_array_string ( res_val , 1 ) ; <S2SV_StartBug> if ( ! nonce1 ) { <S2SV_EndBug> <S2SV_StartBug> applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>nonce1<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; <S2SV_EndBug> free ( sessionid ) ; goto out ; } n2size = json_integer_value ( json_array_get ( res_val , 2 ) ) ; <S2SV_StartBug> if ( ! n2size ) { <S2SV_EndBug> <S2SV_StartBug> applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>n2size<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; <S2SV_EndBug> free ( sessionid ) ; free ( nonce1 ) ; goto out ; } cg_wlock ( & pool -> data_lock ) ; pool -> sessionid = sessionid ; pool -> nonce1 = nonce1 ; pool -> n1_len = strlen ( nonce1 ) / 2 ; free ( pool -> nonce1bin ) ; pool -> nonce1bin = calloc ( pool -> n1_len , 1 ) ; if ( unlikely ( ! pool -> nonce1bin ) ) quithere ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>pool->nonce1bin\" ) ; hex2bin ( pool -> nonce1bin , pool -> nonce1 , pool -> n1_len ) ; pool -> n2size = n2size ; cg_wunlock ( & pool -> data_lock ) ; if ( sessionid ) applog ( LOG_DEBUG , \"Pool<S2SV_blank>%d<S2SV_blank>stratum<S2SV_blank>session<S2SV_blank>id:<S2SV_blank>%s\" , pool -> pool_no , pool -> sessionid ) ; ret = true ; out : if ( ret ) { if ( ! pool -> stratum_url ) pool -> stratum_url = pool -> sockaddr_url ; pool -> stratum_active = true ; pool -> sdiff = 1 ; if ( opt_protocol ) { applog ( LOG_DEBUG , \"Pool<S2SV_blank>%d<S2SV_blank>confirmed<S2SV_blank>mining.subscribe<S2SV_blank>with<S2SV_blank>extranonce1<S2SV_blank>%s<S2SV_blank>extran2size<S2SV_blank>%d\" , pool -> pool_no , pool -> nonce1 , pool -> n2size ) ; } } else { if ( recvd && ! noresume ) { cg_wlock ( & pool -> data_lock ) ; free ( pool -> sessionid ) ; free ( pool -> nonce1 ) ; pool -> sessionid = pool -> nonce1 = NULL ; cg_wunlock ( & pool -> data_lock ) ; applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>resume<S2SV_blank>stratum,<S2SV_blank>trying<S2SV_blank>afresh\" ) ; noresume = true ; json_decref ( val ) ; goto resend ; } applog ( LOG_DEBUG , \"Initiate<S2SV_blank>stratum<S2SV_blank>failed\" ) ; if ( sockd ) suspend_stratum ( pool ) ; } json_decref ( val ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! valid_hex ( nonce1 ) <S2SV_ModEnd> ) { applog <S2SV_ModStart> ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>valid<S2SV_blank>nonce1<S2SV_blank>in<S2SV_blank>initiate_stratum\" <S2SV_ModEnd> ) ; free <S2SV_ModStart> ; if ( n2size < 2 || n2size > 16 <S2SV_ModEnd> ) { applog <S2SV_ModStart> ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>valid<S2SV_blank>n2size<S2SV_blank>in<S2SV_blank>initiate_stratum\" <S2SV_ModEnd> ) ; free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10030\n\n```\nCWE-284 static void _prolog_error ( batch_job_launch_msg_t * req , int rc ) { char * err_name_ptr , err_name [ 256 ] , path_name [ MAXPATHLEN ] ; char * fmt_char ; int fd ; if ( req -> std_err || req -> std_out ) { if ( req -> std_err ) strncpy ( err_name , req -> std_err , sizeof ( err_name ) ) ; else strncpy ( err_name , req -> std_out , sizeof ( err_name ) ) ; if ( ( fmt_char = strchr ( err_name , ( int ) '%' ) ) && ( fmt_char [ 1 ] == 'j' ) && ! strchr ( fmt_char + 1 , ( int ) '%' ) ) { char tmp_name [ 256 ] ; fmt_char [ 1 ] = 'u' ; snprintf ( tmp_name , sizeof ( tmp_name ) , err_name , req -> job_id ) ; strncpy ( err_name , tmp_name , sizeof ( err_name ) ) ; } } else { snprintf ( err_name , sizeof ( err_name ) , \"slurm-%u.out\" , req -> job_id ) ; } err_name_ptr = err_name ; if ( err_name_ptr [ 0 ] == '/' ) snprintf ( path_name , MAXPATHLEN , \"%s\" , err_name_ptr ) ; else if ( req -> work_dir ) snprintf ( path_name , MAXPATHLEN , \"%s/%s\" , req -> work_dir , err_name_ptr ) ; else snprintf ( path_name , MAXPATHLEN , \"/%s\" , err_name_ptr ) ; <S2SV_StartBug> if ( ( fd = open ( path_name , ( O_CREAT | O_APPEND | O_WRONLY ) , 0644 ) ) == - 1 ) { <S2SV_EndBug> <S2SV_StartBug> error ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s:<S2SV_blank>%s\" , path_name , <S2SV_EndBug> slurm_strerror ( errno ) ) ; return ; } snprintf ( err_name , sizeof ( err_name ) , \"Error<S2SV_blank>running<S2SV_blank>slurm<S2SV_blank>prolog:<S2SV_blank>%d\\\\n\" , WEXITSTATUS ( rc ) ) ; safe_write ( fd , err_name , strlen ( err_name ) ) ; if ( fchown ( fd , ( uid_t ) req -> uid , ( gid_t ) req -> gid ) == - 1 ) { snprintf ( err_name , sizeof ( err_name ) , \"Couldn\\'t<S2SV_blank>change<S2SV_blank>fd<S2SV_blank>owner<S2SV_blank>to<S2SV_blank>%u:%u:<S2SV_blank>%m\\\\n\" , req -> uid , req -> gid ) ; } rwfail : close ( fd ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( fd = _open_as_other ( path_name , req <S2SV_ModEnd> ) ) == <S2SV_ModStart> { error ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s:<S2SV_blank>Permission<S2SV_blank>denied\" , path_name <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-319(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5489\n\n```\nCWE-319 static int mincore_unmapped_range ( unsigned long addr , unsigned long end , struct mm_walk * walk ) { <S2SV_StartBug> walk -> private += __mincore_unmapped_range ( addr , end , <S2SV_EndBug> walk -> vma , walk -> private ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> walk ) { unsigned char * vec = walk -> private ; unsigned long nr = ( end - addr ) >> PAGE_SHIFT ; memset ( vec , 0 , nr ) ; <S2SV_ModStart> -> private += nr <S2SV_ModEnd> ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14170\n\n```\nCWE-834 static int mxf_read_index_entry_array ( AVIOContext * pb , MXFIndexTableSegment * segment ) { int i , length ; segment -> nb_index_entries = avio_rb32 ( pb ) ; length = avio_rb32 ( pb ) ; <S2SV_StartBug> if ( ! ( segment -> temporal_offset_entries = av_calloc ( segment -> nb_index_entries , sizeof ( * segment -> temporal_offset_entries ) ) ) || <S2SV_EndBug> ! ( segment -> flag_entries = av_calloc ( segment -> nb_index_entries , sizeof ( * segment -> flag_entries ) ) ) || ! ( segment -> stream_offset_entries = av_calloc ( segment -> nb_index_entries , sizeof ( * segment -> stream_offset_entries ) ) ) ) { av_freep ( & segment -> temporal_offset_entries ) ; av_freep ( & segment -> flag_entries ) ; return AVERROR ( ENOMEM ) ; } <S2SV_StartBug> for ( i = 0 ; i < segment -> nb_index_entries ; i ++ ) { <S2SV_EndBug> segment -> temporal_offset_entries [ i ] = avio_r8 ( pb ) ; avio_r8 ( pb ) ; segment -> flag_entries [ i ] = avio_r8 ( pb ) ; segment -> stream_offset_entries [ i ] = avio_rb64 ( pb ) ; avio_skip ( pb , length - 11 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( segment -> nb_index_entries && length < 11 ) return AVERROR_INVALIDDATA ; if ( <S2SV_ModStart> ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21309\n\n```\nCWE-190 <S2SV_StartBug> void * zrealloc ( void * ptr , size_t size ) { <S2SV_EndBug> # ifndef HAVE_MALLOC_SIZE void * realptr ; # endif size_t oldsize ; void * newptr ; if ( size == 0 && ptr != NULL ) { zfree ( ptr ) ; return NULL ; } if ( ptr == NULL ) return zmalloc ( size ) ; # ifdef HAVE_MALLOC_SIZE oldsize = zmalloc_size ( ptr ) ; newptr = realloc ( ptr , size ) ; if ( ! newptr ) zmalloc_oom_handler ( size ) ; update_zmalloc_stat_free ( oldsize ) ; update_zmalloc_stat_alloc ( zmalloc_size ( newptr ) ) ; return newptr ; # else realptr = ( char * ) ptr - PREFIX_SIZE ; oldsize = * ( ( size_t * ) realptr ) ; newptr = realloc ( realptr , size + PREFIX_SIZE ) ; if ( ! newptr ) zmalloc_oom_handler ( size ) ; * ( ( size_t * ) newptr ) = size ; update_zmalloc_stat_free ( oldsize + PREFIX_SIZE ) ; update_zmalloc_stat_alloc ( size + PREFIX_SIZE ) ; return ( char * ) newptr + PREFIX_SIZE ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) { ASSERT_NO_SIZE_OVERFLOW ( size ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int read_compressed_header ( VP9Decoder * pbi , const uint8_t * data , size_t partition_size ) { VP9_COMMON * const cm = & pbi -> common ; MACROBLOCKD * const xd = & pbi -> mb ; <S2SV_StartBug> FRAME_CONTEXT * const fc = & cm -> fc ; <S2SV_EndBug> vp9_reader r ; int k ; <S2SV_StartBug> if ( vp9_reader_init ( & r , data , partition_size ) ) <S2SV_EndBug> vpx_internal_error ( & cm -> error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>bool<S2SV_blank>decoder<S2SV_blank>0\" ) ; cm -> tx_mode = xd -> lossless ? ONLY_4X4 : read_tx_mode ( & r ) ; if ( cm -> tx_mode == TX_MODE_SELECT ) read_tx_mode_probs ( & fc -> tx_probs , & r ) ; read_coef_probs ( fc , cm -> tx_mode , & r ) ; for ( k = 0 ; k < SKIP_CONTEXTS ; ++ k ) vp9_diff_update_prob ( & r , & fc -> skip_probs [ k ] ) ; if ( ! frame_is_intra_only ( cm ) ) { nmv_context * const nmvc = & fc -> nmvc ; int i , j ; read_inter_mode_probs ( fc , & r ) ; if ( cm -> interp_filter == SWITCHABLE ) read_switchable_interp_probs ( fc , & r ) ; for ( i = 0 ; i < INTRA_INTER_CONTEXTS ; i ++ ) vp9_diff_update_prob ( & r , & fc -> intra_inter_prob [ i ] ) ; cm -> reference_mode = read_frame_reference_mode ( cm , & r ) ; if ( cm -> reference_mode != SINGLE_REFERENCE ) setup_compound_reference_mode ( cm ) ; read_frame_reference_mode_probs ( cm , & r ) ; for ( j = 0 ; j < BLOCK_SIZE_GROUPS ; j ++ ) for ( i = 0 ; i < INTRA_MODES - 1 ; ++ i ) vp9_diff_update_prob ( & r , & fc -> y_mode_prob [ j ] [ i ] ) ; for ( j = 0 ; j < PARTITION_CONTEXTS ; ++ j ) for ( i = 0 ; i < PARTITION_TYPES - 1 ; ++ i ) vp9_diff_update_prob ( & r , & fc -> partition_prob [ j ] [ i ] ) ; read_mv_probs ( nmvc , cm -> allow_high_precision_mv , & r ) ; } <S2SV_StartBug> return vp9_reader_has_error ( & r ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const fc = cm -> fc ; vpx_reader <S2SV_ModEnd> r ; int <S2SV_ModStart> ; if ( vpx_reader_init <S2SV_ModEnd> ( & r <S2SV_ModStart> data , partition_size , pbi -> decrypt_cb , pbi -> decrypt_state <S2SV_ModStart> ; } return vpx_reader_has_error <S2SV_ModEnd> ( & r\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10249\n\n```\nCWE-190 jas_matrix_t * jas_matrix_create ( int numrows , int numcols ) { jas_matrix_t * matrix ; int i ; <S2SV_StartBug> if ( numrows < 0 || numcols < 0 ) { <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> } if ( ! ( matrix = jas_malloc ( sizeof ( jas_matrix_t ) ) ) ) { <S2SV_StartBug> return 0 ; <S2SV_EndBug> } matrix -> flags_ = 0 ; matrix -> numrows_ = numrows ; matrix -> numcols_ = numcols ; matrix -> rows_ = 0 ; matrix -> maxrows_ = numrows ; matrix -> data_ = 0 ; <S2SV_StartBug> matrix -> datasize_ = numrows * numcols ; <S2SV_EndBug> if ( matrix -> maxrows_ > 0 ) { if ( ! ( matrix -> rows_ = jas_alloc2 ( matrix -> maxrows_ , sizeof ( jas_seqent_t * ) ) ) ) { <S2SV_StartBug> jas_matrix_destroy ( matrix ) ; <S2SV_EndBug> return 0 ; } } if ( matrix -> datasize_ > 0 ) { if ( ! ( matrix -> data_ = jas_alloc2 ( matrix -> datasize_ , sizeof ( jas_seqent_t ) ) ) ) { <S2SV_StartBug> jas_matrix_destroy ( matrix ) ; <S2SV_EndBug> return 0 ; } } for ( i = 0 ; i < numrows ; ++ i ) { matrix -> rows_ [ i ] = & matrix -> data_ [ i * matrix -> numcols_ ] ; } for ( i = 0 ; i < matrix -> datasize_ ; ++ i ) { matrix -> data_ [ i ] = 0 ; } matrix -> xstart_ = 0 ; matrix -> ystart_ = 0 ; matrix -> xend_ = matrix -> numcols_ ; matrix -> yend_ = matrix -> numrows_ ; return matrix ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; size_t size ; matrix = 0 ; <S2SV_ModStart> 0 ) { goto error <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } matrix <S2SV_ModStart> -> datasize_ = 0 ; if ( ! jas_safe_size_mul ( numrows , numcols , & size ) ) { goto error ; } matrix -> datasize_ = size <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } } <S2SV_ModStart> ) ) { goto error <S2SV_ModEnd> ; } } <S2SV_ModStart> return matrix ; error : if ( matrix ) { jas_matrix_destroy ( matrix ) ; } return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17533\n\n```\nCWE-125 matvar_t * Mat_VarReadNextInfo4 ( mat_t * mat ) { int M , O , data_type , class_type ; mat_int32_t tmp ; long nBytes ; size_t readresult ; matvar_t * matvar = NULL ; union { mat_uint32_t u ; mat_uint8_t c [ 4 ] ; } endian ; if ( mat == NULL || mat -> fp == NULL ) return NULL ; else if ( NULL == ( matvar = Mat_VarCalloc ( ) ) ) return NULL ; readresult = fread ( & tmp , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } endian . u = 0x01020304 ; if ( tmp < 0 || tmp > 4052 ) { if ( Mat_int32Swap ( & tmp ) > 4052 ) { Mat_VarFree ( matvar ) ; return NULL ; } } M = ( int ) floor ( tmp / 1000.0 ) ; switch ( M ) { case 0 : mat -> byteswap = endian . c [ 0 ] != 4 ; break ; case 1 : mat -> byteswap = endian . c [ 0 ] != 1 ; break ; default : Mat_VarFree ( matvar ) ; return NULL ; } tmp -= M * 1000 ; O = ( int ) floor ( tmp / 100.0 ) ; if ( 0 != O ) { Mat_VarFree ( matvar ) ; return NULL ; } tmp -= O * 100 ; data_type = ( int ) floor ( tmp / 10.0 ) ; switch ( data_type ) { case 0 : matvar -> data_type = MAT_T_DOUBLE ; break ; case 1 : matvar -> data_type = MAT_T_SINGLE ; break ; case 2 : matvar -> data_type = MAT_T_INT32 ; break ; case 3 : matvar -> data_type = MAT_T_INT16 ; break ; case 4 : matvar -> data_type = MAT_T_UINT16 ; break ; case 5 : matvar -> data_type = MAT_T_UINT8 ; break ; default : Mat_VarFree ( matvar ) ; return NULL ; } tmp -= data_type * 10 ; class_type = ( int ) floor ( tmp / 1.0 ) ; switch ( class_type ) { case 0 : matvar -> class_type = MAT_C_DOUBLE ; break ; case 1 : matvar -> class_type = MAT_C_CHAR ; break ; case 2 : matvar -> class_type = MAT_C_SPARSE ; break ; default : Mat_VarFree ( matvar ) ; return NULL ; } matvar -> rank = 2 ; matvar -> dims = ( size_t * ) calloc ( 2 , sizeof ( * matvar -> dims ) ) ; if ( NULL == matvar -> dims ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( & tmp , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( mat -> byteswap ) Mat_int32Swap ( & tmp ) ; matvar -> dims [ 0 ] = tmp ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( & tmp , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( mat -> byteswap ) Mat_int32Swap ( & tmp ) ; matvar -> dims [ 1 ] = tmp ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( & ( matvar -> isComplex ) , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } if ( matvar -> isComplex && MAT_C_CHAR == matvar -> class_type ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( & tmp , sizeof ( int ) , 1 , ( FILE * ) mat -> fp ) ; if ( 1 != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; } if ( mat -> byteswap ) Mat_int32Swap ( & tmp ) ; if ( tmp < 1 ) { Mat_VarFree ( matvar ) ; return NULL ; } matvar -> name = ( char * ) malloc ( tmp ) ; if ( NULL == matvar -> name ) { Mat_VarFree ( matvar ) ; return NULL ; } readresult = fread ( matvar -> name , 1 , tmp , ( FILE * ) mat -> fp ) ; if ( tmp != readresult ) { Mat_VarFree ( matvar ) ; return NULL ; <S2SV_StartBug> } <S2SV_EndBug> matvar -> internal -> datapos = ftell ( ( FILE * ) mat -> fp ) ; if ( matvar -> internal -> datapos == - 1L ) { Mat_VarFree ( matvar ) ; Mat_Critical ( \"Couldn\\'t<S2SV_blank>determine<S2SV_blank>file<S2SV_blank>position\" ) ; return NULL ; } { int err ; size_t tmp2 = Mat_SizeOf ( matvar -> data_type ) ; if ( matvar -> isComplex ) tmp2 *= 2 ; err = SafeMulDims ( matvar , & tmp2 ) ; if ( err ) { Mat_VarFree ( matvar ) ; Mat_Critical ( \"Integer<S2SV_blank>multiplication<S2SV_blank>overflow\" ) ; return NULL ; } nBytes = ( long ) tmp2 ; } ( void ) fseek ( ( FILE * ) mat -> fp , nBytes , SEEK_CUR ) ; return matvar ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } else { matvar -> name [ tmp - 1 ] = '\\\\0' ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2673\n\n```\nCWE-20 int arch_dup_task_struct ( struct task_struct * dst , struct task_struct * src ) { flush_fp_to_thread ( src ) ; flush_altivec_to_thread ( src ) ; flush_vsx_to_thread ( src ) ; flush_spe_to_thread ( src ) ; <S2SV_StartBug> * dst = * src ; <S2SV_EndBug> clear_task_ebb ( dst ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> src ) ; __switch_to_tm ( src ) ; tm_recheckpoint_new_task ( src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7101\n\n```\nCWE-125 static Image * ReadSGIImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; SGIInfo iris_info ; size_t bytes_per_pixel , quantum ; ssize_t count , y , z ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } iris_info . magic = ReadBlobMSBShort ( image ) ; do { if ( iris_info . magic != 0x01DA ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . storage = ( unsigned char ) ReadBlobByte ( image ) ; switch ( iris_info . storage ) { case 0x00 : image -> compression = NoCompression ; break ; case 0x01 : image -> compression = RLECompression ; break ; default : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } iris_info . bytes_per_pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( iris_info . bytes_per_pixel == 0 ) || ( iris_info . bytes_per_pixel > 2 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . dimension = ReadBlobMSBShort ( image ) ; iris_info . columns = ReadBlobMSBShort ( image ) ; iris_info . rows = ReadBlobMSBShort ( image ) ; iris_info . depth = ReadBlobMSBShort ( image ) ; if ( ( iris_info . depth == 0 ) || ( iris_info . depth > 4 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; iris_info . minimum_value = ReadBlobMSBLong ( image ) ; iris_info . maximum_value = ReadBlobMSBLong ( image ) ; iris_info . sans = ReadBlobMSBLong ( image ) ; <S2SV_StartBug> ( void ) ReadBlob ( image , sizeof ( iris_info . name ) , ( unsigned char * ) <S2SV_EndBug> <S2SV_StartBug> iris_info . name ) ; <S2SV_EndBug> iris_info . name [ sizeof ( iris_info . name ) - 1 ] = '\\\\0' ; if ( * iris_info . name != '\\\\0' ) ( void ) SetImageProperty ( image , \"label\" , iris_info . name , exception ) ; iris_info . pixel_format = ReadBlobMSBLong ( image ) ; if ( iris_info . pixel_format != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , sizeof ( iris_info . filler ) , iris_info . filler ) ; <S2SV_StartBug> ( void ) count ; <S2SV_EndBug> image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; image -> depth = ( size_t ) MagickMin ( iris_info . depth , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . pixel_format == 0 ) image -> depth = ( size_t ) MagickMin ( ( size_t ) 8 * iris_info . bytes_per_pixel , MAGICKCORE_QUANTUM_DEPTH ) ; if ( iris_info . depth < 3 ) { image -> storage_class = PseudoClass ; image -> colors = iris_info . bytes_per_pixel > 1 ? 65535 : 256 ; } <S2SV_StartBug> if ( EOFBlob ( image ) != MagickFalse ) <S2SV_EndBug> ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; bytes_per_pixel = ( size_t ) iris_info . bytes_per_pixel ; number_pixels = ( MagickSizeType ) iris_info . columns * iris_info . rows ; if ( ( 4 * bytes_per_pixel * number_pixels ) != ( ( MagickSizeType ) ( size_t ) ( 4 * bytes_per_pixel * number_pixels ) ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info = AcquireVirtualMemory ( iris_info . columns , iris_info . rows * 4 * bytes_per_pixel * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( int ) iris_info . storage != 0x01 ) { unsigned char * scanline ; scanline = ( unsigned char * ) AcquireQuantumMemory ( iris_info . columns , bytes_per_pixel * sizeof ( * scanline ) ) ; if ( scanline == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels + bytes_per_pixel * z ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { count = ReadBlob ( image , bytes_per_pixel * iris_info . columns , scanline ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; if ( bytes_per_pixel == 2 ) for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ 2 * x ] ; * ( p + 1 ) = scanline [ 2 * x + 1 ] ; p += 8 ; } else for ( x = 0 ; x < ( ssize_t ) iris_info . columns ; x ++ ) { * p = scanline [ x ] ; p += 4 ; } } } scanline = ( unsigned char * ) RelinquishMagickMemory ( scanline ) ; } else { MemoryInfo * packet_info ; size_t * runlength ; ssize_t offset , * offsets ; unsigned char * packets ; unsigned int data_order ; offsets = ( ssize_t * ) AcquireQuantumMemory ( ( size_t ) iris_info . rows , iris_info . depth * sizeof ( * offsets ) ) ; runlength = ( size_t * ) AcquireQuantumMemory ( iris_info . rows , iris_info . depth * sizeof ( * runlength ) ) ; packet_info = AcquireVirtualMemory ( ( size_t ) iris_info . columns + 10UL , 4UL * sizeof ( * packets ) ) ; if ( ( offsets == ( ssize_t * ) NULL ) || ( runlength == ( size_t * ) NULL ) || ( packet_info == ( MemoryInfo * ) NULL ) ) { if ( offsets == ( ssize_t * ) NULL ) offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; if ( runlength == ( size_t * ) NULL ) runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; if ( packet_info == ( MemoryInfo * ) NULL ) packet_info = RelinquishVirtualMemory ( packet_info ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } packets = ( unsigned char * ) GetVirtualMemoryBlob ( packet_info ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) offsets [ i ] = ReadBlobMSBSignedLong ( image ) ; for ( i = 0 ; i < ( ssize_t ) ( iris_info . rows * iris_info . depth ) ; i ++ ) { runlength [ i ] = ReadBlobMSBLong ( image ) ; if ( runlength [ i ] > ( 4 * ( size_t ) iris_info . columns + 10 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } offset = 0 ; data_order = 0 ; for ( y = 0 ; ( ( y < ( ssize_t ) iris_info . rows ) && ( data_order == 0 ) ) ; y ++ ) for ( z = 0 ; ( ( z < ( ssize_t ) iris_info . depth ) && ( data_order == 0 ) ) ; z ++ ) { if ( offsets [ y + z * iris_info . rows ] < offset ) data_order = 1 ; offset = offsets [ y + z * iris_info . rows ] ; } offset = ( ssize_t ) TellBlob ( image ) ; if ( data_order == 1 ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( ssize_t ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , 1L * iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } } } else { MagickOffsetType position ; position = TellBlob ( image ) ; p = pixels ; for ( y = 0 ; y < ( ssize_t ) iris_info . rows ; y ++ ) { for ( z = 0 ; z < ( ssize_t ) iris_info . depth ; z ++ ) { if ( offset != offsets [ y + z * iris_info . rows ] ) { offset = offsets [ y + z * iris_info . rows ] ; offset = ( ssize_t ) SeekBlob ( image , ( ssize_t ) offset , SEEK_SET ) ; } count = ReadBlob ( image , ( size_t ) runlength [ y + z * iris_info . rows ] , packets ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; offset += ( ssize_t ) runlength [ y + z * iris_info . rows ] ; status = SGIDecode ( bytes_per_pixel , ( ssize_t ) ( runlength [ y + z * iris_info . rows ] / bytes_per_pixel ) , packets , 1L * iris_info . columns , p + bytes_per_pixel * z ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } p += ( iris_info . columns * 4 * bytes_per_pixel ) ; } offset = ( ssize_t ) SeekBlob ( image , position , SEEK_SET ) ; } packet_info = RelinquishVirtualMemory ( packet_info ) ; runlength = ( size_t * ) RelinquishMagickMemory ( runlength ) ; offsets = ( ssize_t * ) RelinquishMagickMemory ( offsets ) ; } image -> alpha_trait = iris_info . depth == 4 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = iris_info . columns ; image -> rows = iris_info . rows ; if ( image -> storage_class == DirectClass ) { if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 0 ) << 8 ) | ( * ( p + 1 ) ) ) ) , q ) ; SetPixelGreen ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 2 ) << 8 ) | ( * ( p + 3 ) ) ) ) , q ) ; SetPixelBlue ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 4 ) << 8 ) | ( * ( p + 5 ) ) ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleShortToQuantum ( ( unsigned short ) ( ( * ( p + 6 ) << 8 ) | ( * ( p + 7 ) ) ) ) , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * ( p + 1 ) ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * ( p + 2 ) ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * ( p + 3 ) ) , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( bytes_per_pixel == 2 ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 8 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { quantum = ( * p << 8 ) ; quantum |= ( * ( p + 1 ) ) ; SetPixelIndex ( image , ( Quantum ) quantum , q ) ; p += 8 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { p = pixels + ( image -> rows - y - 1 ) * 4 * image -> columns ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p , q ) ; p += 4 ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; iris_info . magic = ReadBlobMSBShort ( image ) ; if ( iris_info . magic == 0x01DA ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( iris_info . magic == 0x01DA ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> image ) ; count = <S2SV_ModEnd> ReadBlob ( image <S2SV_ModStart> iris_info . name ) ; if ( count != sizeof ( iris_info . name ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" <S2SV_ModStart> filler ) ; if ( count != sizeof ( iris_info . filler ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) <S2SV_ModEnd> ; image -> <S2SV_ModStart> } if ( <S2SV_ModEnd> ( image_info ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 bool semaphore_try_wait ( semaphore_t * semaphore ) { assert ( semaphore != NULL ) ; assert ( semaphore -> fd != INVALID_FD ) ; <S2SV_StartBug> int flags = fcntl ( semaphore -> fd , F_GETFL ) ; <S2SV_EndBug> if ( flags == - 1 ) { LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>flags<S2SV_blank>for<S2SV_blank>semaphore<S2SV_blank>fd:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; return false ; } <S2SV_StartBug> if ( fcntl ( semaphore -> fd , F_SETFL , flags | O_NONBLOCK ) == - 1 ) { <S2SV_EndBug> LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>O_NONBLOCK<S2SV_blank>for<S2SV_blank>semaphore<S2SV_blank>fd:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; return false ; } eventfd_t value ; if ( eventfd_read ( semaphore -> fd , & value ) == - 1 ) return false ; <S2SV_StartBug> if ( fcntl ( semaphore -> fd , F_SETFL , flags ) == - 1 ) <S2SV_EndBug> LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>resetore<S2SV_blank>flags<S2SV_blank>for<S2SV_blank>semaphore<S2SV_blank>fd:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int flags = TEMP_FAILURE_RETRY ( <S2SV_ModStart> fd , F_GETFL ) <S2SV_ModStart> } if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> flags | O_NONBLOCK ) <S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> F_SETFL , flags )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13028\n\n```\nCWE-125 void bootp_print ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register const struct bootp * bp ; static const u_char vm_cmu [ 4 ] = VM_CMU ; static const u_char vm_rfc1048 [ 4 ] = VM_RFC1048 ; bp = ( const struct bootp * ) cp ; ND_TCHECK ( bp -> bp_op ) ; ND_PRINT ( ( ndo , \"BOOTP/DHCP,<S2SV_blank>%s\" , tok2str ( bootp_op_values , \"unknown<S2SV_blank>(0x%02x)\" , bp -> bp_op ) ) ) ; ND_TCHECK ( bp -> bp_hlen ) ; if ( bp -> bp_htype == 1 && bp -> bp_hlen == 6 && bp -> bp_op == BOOTPREQUEST ) { ND_TCHECK2 ( bp -> bp_chaddr [ 0 ] , 6 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>from<S2SV_blank>%s\" , etheraddr_string ( ndo , bp -> bp_chaddr ) ) ) ; } ND_PRINT ( ( ndo , \",<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; if ( ! ndo -> ndo_vflag ) return ; ND_TCHECK ( bp -> bp_secs ) ; if ( bp -> bp_htype != 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>htype<S2SV_blank>%d\" , bp -> bp_htype ) ) ; if ( bp -> bp_htype != 1 || bp -> bp_hlen != 6 ) ND_PRINT ( ( ndo , \",<S2SV_blank>hlen<S2SV_blank>%d\" , bp -> bp_hlen ) ) ; if ( bp -> bp_hops ) ND_PRINT ( ( ndo , \",<S2SV_blank>hops<S2SV_blank>%d\" , bp -> bp_hops ) ) ; if ( EXTRACT_32BITS ( & bp -> bp_xid ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>xid<S2SV_blank>0x%x\" , EXTRACT_32BITS ( & bp -> bp_xid ) ) ) ; if ( EXTRACT_16BITS ( & bp -> bp_secs ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>secs<S2SV_blank>%d\" , EXTRACT_16BITS ( & bp -> bp_secs ) ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s]\" , <S2SV_EndBug> bittok2str ( bootp_flag_values , \"none\" , EXTRACT_16BITS ( & bp -> bp_flags ) ) ) ) ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( & bp -> bp_flags ) ) ) ; ND_TCHECK ( bp -> bp_ciaddr ) ; if ( EXTRACT_32BITS ( & bp -> bp_ciaddr . s_addr ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Client-IP<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp -> bp_ciaddr ) ) ) ; ND_TCHECK ( bp -> bp_yiaddr ) ; if ( EXTRACT_32BITS ( & bp -> bp_yiaddr . s_addr ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Your-IP<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp -> bp_yiaddr ) ) ) ; ND_TCHECK ( bp -> bp_siaddr ) ; if ( EXTRACT_32BITS ( & bp -> bp_siaddr . s_addr ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Server-IP<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp -> bp_siaddr ) ) ) ; ND_TCHECK ( bp -> bp_giaddr ) ; if ( EXTRACT_32BITS ( & bp -> bp_giaddr . s_addr ) ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Gateway-IP<S2SV_blank>%s\" , ipaddr_string ( ndo , & bp -> bp_giaddr ) ) ) ; if ( bp -> bp_htype == 1 && bp -> bp_hlen == 6 ) { ND_TCHECK2 ( bp -> bp_chaddr [ 0 ] , 6 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Client-Ethernet-Address<S2SV_blank>%s\" , etheraddr_string ( ndo , bp -> bp_chaddr ) ) ) ; } ND_TCHECK2 ( bp -> bp_sname [ 0 ] , 1 ) ; if ( * bp -> bp_sname ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>sname<S2SV_blank>\\\\\"\" ) ) ; if ( fn_printztn ( ndo , bp -> bp_sname , ( u_int ) sizeof bp -> bp_sname , ndo -> ndo_snapend ) ) { ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr + 1 ) ) ; return ; } ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } ND_TCHECK2 ( bp -> bp_file [ 0 ] , 1 ) ; if ( * bp -> bp_file ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>file<S2SV_blank>\\\\\"\" ) ) ; if ( fn_printztn ( ndo , bp -> bp_file , ( u_int ) sizeof bp -> bp_file , ndo -> ndo_snapend ) ) { ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr + 1 ) ) ; return ; } ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } ND_TCHECK ( bp -> bp_vend [ 0 ] ) ; if ( memcmp ( ( const char * ) bp -> bp_vend , vm_rfc1048 , sizeof ( uint32_t ) ) == 0 ) rfc1048_print ( ndo , bp -> bp_vend ) ; else if ( memcmp ( ( const char * ) bp -> bp_vend , vm_cmu , sizeof ( uint32_t ) ) == 0 ) cmu_print ( ndo , bp -> bp_vend ) ; else { uint32_t ul ; ul = EXTRACT_32BITS ( & bp -> bp_vend ) ; if ( ul != 0 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Vendor-#0x%x\" , ul ) ) ; } return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ND_TCHECK ( bp -> bp_flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 void big_key_describe ( const struct key * key , struct seq_file * m ) { size_t datalen = ( size_t ) key -> payload . data [ big_key_len ] ; seq_puts ( m , key -> description ) ; <S2SV_StartBug> if ( key_is_instantiated ( key ) ) <S2SV_EndBug> seq_printf ( m , \":<S2SV_blank>%zu<S2SV_blank>[%s]\" , datalen , datalen > BIG_KEY_FILE_THRESHOLD ? \"file\" : \"buff\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( key )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000252\n\n```\nCWE-20 static int vmx_update_pi_irte ( struct kvm * kvm , unsigned int host_irq , uint32_t guest_irq , bool set ) { struct kvm_kernel_irq_routing_entry * e ; struct kvm_irq_routing_table * irq_rt ; struct kvm_lapic_irq irq ; struct kvm_vcpu * vcpu ; struct vcpu_data vcpu_info ; <S2SV_StartBug> int idx , ret = - EINVAL ; <S2SV_EndBug> if ( ! kvm_arch_has_assigned_device ( kvm ) || ! irq_remapping_cap ( IRQ_POSTING_CAP ) || ! kvm_vcpu_apicv_active ( kvm -> vcpus [ 0 ] ) ) return 0 ; idx = srcu_read_lock ( & kvm -> irq_srcu ) ; irq_rt = srcu_dereference ( kvm -> irq_routing , & kvm -> irq_srcu ) ; <S2SV_StartBug> BUG_ON ( guest_irq >= irq_rt -> nr_rt_entries ) ; <S2SV_EndBug> <S2SV_StartBug> hlist_for_each_entry ( e , & irq_rt -> map [ guest_irq ] , link ) { <S2SV_EndBug> if ( e -> type != KVM_IRQ_ROUTING_MSI ) continue ; kvm_set_msi_irq ( kvm , e , & irq ) ; if ( ! kvm_intr_is_single_vcpu ( kvm , & irq , & vcpu ) ) { ret = irq_set_vcpu_affinity ( host_irq , NULL ) ; if ( ret < 0 ) { printk ( KERN_INFO \"failed<S2SV_blank>to<S2SV_blank>back<S2SV_blank>to<S2SV_blank>remapped<S2SV_blank>mode,<S2SV_blank>irq:<S2SV_blank>%u\\\\n\" , host_irq ) ; goto out ; } continue ; } vcpu_info . pi_desc_addr = __pa ( vcpu_to_pi_desc ( vcpu ) ) ; vcpu_info . vector = irq . vector ; trace_kvm_pi_irte_update ( vcpu -> vcpu_id , host_irq , e -> gsi , vcpu_info . vector , vcpu_info . pi_desc_addr , set ) ; if ( set ) ret = irq_set_vcpu_affinity ( host_irq , & vcpu_info ) ; else { pi_set_sn ( vcpu_to_pi_desc ( vcpu ) ) ; ret = irq_set_vcpu_affinity ( host_irq , NULL ) ; pi_clear_sn ( vcpu_to_pi_desc ( vcpu ) ) ; } if ( ret < 0 ) { printk ( KERN_INFO \"%s:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>update<S2SV_blank>PI<S2SV_blank>IRTE\\\\n\" , __func__ ) ; goto out ; } } ret = 0 ; out : srcu_read_unlock ( & kvm -> irq_srcu , idx ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , ret = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> irq_srcu ) ; if <S2SV_ModEnd> ( guest_irq >= <S2SV_ModStart> irq_rt -> nr_rt_entries || hlist_empty ( <S2SV_ModEnd> & irq_rt -> <S2SV_ModStart> [ guest_irq ] ) ) { pr_warn_once ( \"no<S2SV_blank>route<S2SV_blank>for<S2SV_blank>guest_irq<S2SV_blank>%u/%u<S2SV_blank>(broken<S2SV_blank>user<S2SV_blank>space?)\\\\n\" , guest_irq , irq_rt -> nr_rt_entries ) ; goto out ; } hlist_for_each_entry ( e , & irq_rt -> map [ guest_irq ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9685\n\n```\nCWE-400 int xfs_attr3_leaf_list_int ( struct xfs_buf * bp , struct xfs_attr_list_context * context ) { struct attrlist_cursor_kern * cursor ; struct xfs_attr_leafblock * leaf ; struct xfs_attr3_icleaf_hdr ichdr ; struct xfs_attr_leaf_entry * entries ; struct xfs_attr_leaf_entry * entry ; int retval ; int i ; struct xfs_mount * mp = context -> dp -> i_mount ; trace_xfs_attr_list_leaf ( context ) ; leaf = bp -> b_addr ; xfs_attr3_leaf_hdr_from_disk ( mp -> m_attr_geo , & ichdr , leaf ) ; entries = xfs_attr3_leaf_entryp ( leaf ) ; cursor = context -> cursor ; cursor -> initted = 1 ; if ( context -> resynch ) { entry = & entries [ 0 ] ; for ( i = 0 ; i < ichdr . count ; entry ++ , i ++ ) { if ( be32_to_cpu ( entry -> hashval ) == cursor -> hashval ) { if ( cursor -> offset == context -> dupcnt ) { context -> dupcnt = 0 ; break ; } context -> dupcnt ++ ; } else if ( be32_to_cpu ( entry -> hashval ) > cursor -> hashval ) { context -> dupcnt = 0 ; break ; } } if ( i == ichdr . count ) { trace_xfs_attr_list_notfound ( context ) ; return 0 ; } } else { entry = & entries [ 0 ] ; i = 0 ; } context -> resynch = 0 ; retval = 0 ; for ( ; i < ichdr . count ; entry ++ , i ++ ) { if ( be32_to_cpu ( entry -> hashval ) != cursor -> hashval ) { cursor -> hashval = be32_to_cpu ( entry -> hashval ) ; cursor -> offset = 0 ; } if ( entry -> flags & XFS_ATTR_INCOMPLETE ) continue ; if ( entry -> flags & XFS_ATTR_LOCAL ) { xfs_attr_leaf_name_local_t * name_loc = xfs_attr3_leaf_name_local ( leaf , i ) ; retval = context -> put_listent ( context , entry -> flags , name_loc -> nameval , ( int ) name_loc -> namelen , be16_to_cpu ( name_loc -> valuelen ) , & name_loc -> nameval [ name_loc -> namelen ] ) ; if ( retval ) return retval ; } else { xfs_attr_leaf_name_remote_t * name_rmt = xfs_attr3_leaf_name_remote ( leaf , i ) ; int valuelen = be32_to_cpu ( name_rmt -> valuelen ) ; if ( context -> put_value ) { xfs_da_args_t args ; memset ( ( char * ) & args , 0 , sizeof ( args ) ) ; args . geo = context -> dp -> i_mount -> m_attr_geo ; args . dp = context -> dp ; args . whichfork = XFS_ATTR_FORK ; args . valuelen = valuelen ; args . rmtvaluelen = valuelen ; args . value = kmem_alloc ( valuelen , KM_SLEEP | KM_NOFS ) ; args . rmtblkno = be32_to_cpu ( name_rmt -> valueblk ) ; args . rmtblkcnt = xfs_attr3_rmt_blocks ( args . dp -> i_mount , valuelen ) ; retval = xfs_attr_rmtval_get ( & args ) ; <S2SV_StartBug> if ( retval ) <S2SV_EndBug> return retval ; retval = context -> put_listent ( context , entry -> flags , name_rmt -> name , ( int ) name_rmt -> namelen , valuelen , args . value ) ; kmem_free ( args . value ) ; } else { retval = context -> put_listent ( context , entry -> flags , name_rmt -> name , ( int ) name_rmt -> namelen , valuelen , NULL ) ; } if ( retval ) return retval ; } if ( context -> seen_enough ) break ; cursor -> offset ++ ; } trace_xfs_attr_list_leaf_end ( context ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! retval ) <S2SV_ModEnd> retval = context\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8767\n\n```\nCWE-362 void sctp_generate_heartbeat_event ( unsigned long data ) { int error = 0 ; struct sctp_transport * transport = ( struct sctp_transport * ) data ; struct sctp_association * asoc = transport -> asoc ; <S2SV_StartBug> struct net * net = sock_net ( asoc -> base . sk ) ; <S2SV_EndBug> <S2SV_StartBug> bh_lock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> <S2SV_StartBug> if ( sock_owned_by_user ( asoc -> base . sk ) ) { <S2SV_EndBug> pr_debug ( \"%s:<S2SV_blank>sock<S2SV_blank>is<S2SV_blank>busy\\\\n\" , __func__ ) ; if ( ! mod_timer ( & transport -> hb_timer , jiffies + ( HZ / 20 ) ) ) sctp_transport_hold ( transport ) ; goto out_unlock ; } if ( transport -> dead ) goto out_unlock ; error = sctp_do_sm ( net , SCTP_EVENT_T_TIMEOUT , SCTP_ST_TIMEOUT ( SCTP_EVENT_TIMEOUT_HEARTBEAT ) , asoc -> state , asoc -> ep , asoc , transport , GFP_ATOMIC ) ; if ( error ) <S2SV_StartBug> asoc -> base . sk -> sk_err = - error ; <S2SV_EndBug> out_unlock : <S2SV_StartBug> bh_unlock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> sctp_transport_put ( transport ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> asoc ; struct sock * sk = asoc -> base . sk ; struct <S2SV_ModStart> = sock_net ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ; bh_lock_sock ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ( sock_owned_by_user ( <S2SV_ModEnd> sk ) ) <S2SV_ModStart> ( error ) <S2SV_ModEnd> sk -> sk_err <S2SV_ModStart> : bh_unlock_sock ( <S2SV_ModEnd> sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10940\n\n```\nCWE-119 static int cdrom_ioctl_media_changed ( struct cdrom_device_info * cdi , unsigned long arg ) { struct cdrom_changer_info * info ; int ret ; cd_dbg ( CD_DO_IOCTL , \"entering<S2SV_blank>CDROM_MEDIA_CHANGED\\\\n\" ) ; if ( ! CDROM_CAN ( CDC_MEDIA_CHANGED ) ) return - ENOSYS ; if ( ! CDROM_CAN ( CDC_SELECT_DISC ) || arg == CDSL_CURRENT ) return media_changed ( cdi , 1 ) ; <S2SV_StartBug> if ( ( unsigned int ) arg >= cdi -> capacity ) <S2SV_EndBug> return - EINVAL ; info = kmalloc ( sizeof ( * info ) , GFP_KERNEL ) ; if ( ! info ) return - ENOMEM ; ret = cdrom_read_mech_status ( cdi , info ) ; if ( ! ret ) ret = info -> slots [ arg ] . change ; kfree ( info ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> arg >= cdi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int llcp_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; unsigned int copied , rlen ; struct sk_buff * skb , * cskb ; int err = 0 ; pr_debug ( \"%p<S2SV_blank>%zu\\\\n\" , sk , len ) ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> lock_sock ( sk ) ; if ( sk -> sk_state == LLCP_CLOSED && skb_queue_empty ( & sk -> sk_receive_queue ) ) { release_sock ( sk ) ; return 0 ; } release_sock ( sk ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) { pr_err ( \"Recv<S2SV_blank>datagram<S2SV_blank>failed<S2SV_blank>state<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d\" , sk -> sk_state , err , sock_error ( sk ) ) ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } rlen = skb -> len ; copied = min_t ( unsigned int , rlen , len ) ; cskb = skb ; if ( skb_copy_datagram_iovec ( cskb , 0 , msg -> msg_iov , copied ) ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - EFAULT ; } sock_recv_timestamp ( msg , sk , skb ) ; if ( sk -> sk_type == SOCK_DGRAM && msg -> msg_name ) { struct nfc_llcp_ui_cb * ui_cb = nfc_llcp_ui_skb_cb ( skb ) ; struct sockaddr_nfc_llcp * sockaddr = ( struct sockaddr_nfc_llcp * ) msg -> msg_name ; msg -> msg_namelen = sizeof ( struct sockaddr_nfc_llcp ) ; pr_debug ( \"Datagram<S2SV_blank>socket<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , ui_cb -> dsap , ui_cb -> ssap ) ; memset ( sockaddr , 0 , sizeof ( * sockaddr ) ) ; sockaddr -> sa_family = AF_NFC ; sockaddr -> nfc_protocol = NFC_PROTO_NFC_DEP ; sockaddr -> dsap = ui_cb -> dsap ; sockaddr -> ssap = ui_cb -> ssap ; } if ( ! ( flags & MSG_PEEK ) ) { if ( sk -> sk_type == SOCK_STREAM || sk -> sk_type == SOCK_DGRAM || sk -> sk_type == SOCK_RAW ) { skb_pull ( skb , copied ) ; if ( skb -> len ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; goto done ; } } kfree_skb ( skb ) ; } done : if ( sk -> sk_type == SOCK_SEQPACKET && ( flags & MSG_TRUNC ) ) copied = rlen ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) ; <S2SV_ModEnd> lock_sock ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2925\n\n```\nCWE-254 static int prepend_path ( const struct path * path , const struct path * root , char * * buffer , int * buflen ) { struct dentry * dentry ; struct vfsmount * vfsmnt ; struct mount * mnt ; int error = 0 ; unsigned seq , m_seq = 0 ; char * bptr ; int blen ; rcu_read_lock ( ) ; restart_mnt : read_seqbegin_or_lock ( & mount_lock , & m_seq ) ; seq = 0 ; rcu_read_lock ( ) ; restart : bptr = * buffer ; blen = * buflen ; error = 0 ; dentry = path -> dentry ; vfsmnt = path -> mnt ; mnt = real_mount ( vfsmnt ) ; read_seqbegin_or_lock ( & rename_lock , & seq ) ; while ( dentry != root -> dentry || vfsmnt != root -> mnt ) { struct dentry * parent ; if ( dentry == vfsmnt -> mnt_root || IS_ROOT ( dentry ) ) { <S2SV_StartBug> struct mount * parent = ACCESS_ONCE ( mnt -> mnt_parent ) ; <S2SV_EndBug> if ( mnt != parent ) { dentry = ACCESS_ONCE ( mnt -> mnt_mountpoint ) ; mnt = parent ; vfsmnt = & mnt -> mnt ; continue ; } if ( ! error ) error = is_mounted ( vfsmnt ) ? 1 : 2 ; break ; } parent = dentry -> d_parent ; prefetch ( parent ) ; error = prepend_name ( & bptr , & blen , & dentry -> d_name ) ; if ( error ) break ; dentry = parent ; } if ( ! ( seq & 1 ) ) rcu_read_unlock ( ) ; if ( need_seqretry ( & rename_lock , seq ) ) { seq = 1 ; goto restart ; } done_seqretry ( & rename_lock , seq ) ; if ( ! ( m_seq & 1 ) ) rcu_read_unlock ( ) ; if ( need_seqretry ( & mount_lock , m_seq ) ) { m_seq = 1 ; goto restart_mnt ; } done_seqretry ( & mount_lock , m_seq ) ; if ( error >= 0 && bptr == * buffer ) { if ( -- blen < 0 ) error = - ENAMETOOLONG ; else * -- bptr = '/' ; } * buffer = bptr ; * buflen = blen ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mnt_parent ) ; if ( dentry != vfsmnt -> mnt_root ) { bptr = * buffer ; blen = * buflen ; error = 3 ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4587\n\n```\nCWE-20 static int kvm_vm_ioctl_create_vcpu ( struct kvm * kvm , u32 id ) { int r ; struct kvm_vcpu * vcpu , * v ; <S2SV_StartBug> vcpu = kvm_arch_vcpu_create ( kvm , id ) ; <S2SV_EndBug> if ( IS_ERR ( vcpu ) ) return PTR_ERR ( vcpu ) ; preempt_notifier_init ( & vcpu -> preempt_notifier , & kvm_preempt_ops ) ; r = kvm_arch_vcpu_setup ( vcpu ) ; if ( r ) goto vcpu_destroy ; mutex_lock ( & kvm -> lock ) ; if ( ! kvm_vcpu_compatible ( vcpu ) ) { r = - EINVAL ; goto unlock_vcpu_destroy ; } if ( atomic_read ( & kvm -> online_vcpus ) == KVM_MAX_VCPUS ) { r = - EINVAL ; goto unlock_vcpu_destroy ; } kvm_for_each_vcpu ( r , v , kvm ) if ( v -> vcpu_id == id ) { r = - EEXIST ; goto unlock_vcpu_destroy ; } BUG_ON ( kvm -> vcpus [ atomic_read ( & kvm -> online_vcpus ) ] ) ; kvm_get_kvm ( kvm ) ; r = create_vcpu_fd ( vcpu ) ; if ( r < 0 ) { kvm_put_kvm ( kvm ) ; goto unlock_vcpu_destroy ; } kvm -> vcpus [ atomic_read ( & kvm -> online_vcpus ) ] = vcpu ; smp_wmb ( ) ; atomic_inc ( & kvm -> online_vcpus ) ; mutex_unlock ( & kvm -> lock ) ; kvm_arch_vcpu_postcreate ( vcpu ) ; return r ; unlock_vcpu_destroy : mutex_unlock ( & kvm -> lock ) ; vcpu_destroy : kvm_arch_vcpu_destroy ( vcpu ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * v ; if ( id >= KVM_MAX_VCPUS ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><width><S2SV_blank><height><S2SV_blank><infile><S2SV_blank><outfile><S2SV_blank><frame>\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15296\n\n```\nCWE-119 void faad_resetbits ( bitfile * ld , int bits ) { uint32_t tmp ; int words = bits >> 5 ; int remainder = bits & 0x1F ; <S2SV_StartBug> ld -> bytes_left = ld -> buffer_size - words * 4 ; <S2SV_EndBug> if ( ld -> bytes_left >= 4 ) { tmp = getdword ( & ld -> start [ words ] ) ; ld -> bytes_left -= 4 ; } else { tmp = getdword_n ( & ld -> start [ words ] , ld -> bytes_left ) ; ld -> bytes_left = 0 ; } ld -> bufa = tmp ; if ( ld -> bytes_left >= 4 ) { tmp = getdword ( & ld -> start [ words + 1 ] ) ; ld -> bytes_left -= 4 ; } else { tmp = getdword_n ( & ld -> start [ words + 1 ] , ld -> bytes_left ) ; ld -> bytes_left = 0 ; } ld -> bufb = tmp ; ld -> bits_left = 32 - remainder ; ld -> tail = & ld -> start [ words + 2 ] ; ld -> error = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & 0x1F ; if ( ld -> buffer_size < words * 4 ) ld -> bytes_left = 0 ; else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadARTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; QuantumInfo * quantum_info ; QuantumType quantum_type ; MagickBooleanType status ; size_t length ; ssize_t count , y ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 1 ; image -> endian = MSBEndian ; ( void ) ReadBlobLSBShort ( image ) ; image -> columns = ( size_t ) ReadBlobLSBShort ( image ) ; ( void ) ReadBlobLSBShort ( image ) ; image -> rows = ( size_t ) ReadBlobLSBShort ( image ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( AcquireImageColormap ( image , 2 ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } <S2SV_StartBug> SetImageColorspace ( image , GRAYColorspace ) ; <S2SV_EndBug> quantum_type = IndexQuantum ; quantum_info = AcquireQuantumInfo ( image_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = GetQuantumPixels ( quantum_info ) ; length = GetQuantumExtent ( image , quantum_info , quantum_type ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { register PixelPacket * restrict q ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; ( void ) ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; count = ReadBlob ( image , ( size_t ) ( - ( ssize_t ) length ) & 0x01 , pixels ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } SetQuantumImageType ( image , quantum_type ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t ipStringToAddr ( const char_t * str , IpAddr * ipAddr ) { error_t error ; # if ( IPV6_SUPPORT == ENABLED ) <S2SV_StartBug> if ( strchr ( str , ':' ) ) <S2SV_EndBug> { ipAddr -> length = sizeof ( Ipv6Addr ) ; error = ipv6StringToAddr ( str , & ipAddr -> ipv6Addr ) ; } else # endif # if ( IPV4_SUPPORT == ENABLED ) <S2SV_StartBug> if ( strchr ( str , '.' ) ) <S2SV_EndBug> { ipAddr -> length = sizeof ( Ipv4Addr ) ; error = ipv4StringToAddr ( str , & ipAddr -> ipv4Addr ) ; } else # endif { error = ERROR_FAILURE ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) if ( osStrchr <S2SV_ModEnd> ( str , <S2SV_ModStart> , ':' ) != NULL <S2SV_ModStart> ) if ( osStrchr <S2SV_ModEnd> ( str , <S2SV_ModStart> , '.' ) != NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8369\n\n```\nCWE-189 int kvm_iommu_map_pages ( struct kvm * kvm , struct kvm_memory_slot * slot ) { gfn_t gfn , end_gfn ; pfn_t pfn ; int r = 0 ; struct iommu_domain * domain = kvm -> arch . iommu_domain ; int flags ; if ( ! domain ) return 0 ; gfn = slot -> base_gfn ; end_gfn = gfn + slot -> npages ; flags = IOMMU_READ ; if ( ! ( slot -> flags & KVM_MEM_READONLY ) ) flags |= IOMMU_WRITE ; if ( ! kvm -> arch . iommu_noncoherent ) flags |= IOMMU_CACHE ; while ( gfn < end_gfn ) { unsigned long page_size ; if ( iommu_iova_to_phys ( domain , gfn_to_gpa ( gfn ) ) ) { gfn += 1 ; continue ; } page_size = kvm_host_page_size ( kvm , gfn ) ; while ( ( gfn + ( page_size >> PAGE_SHIFT ) ) > end_gfn ) page_size >>= 1 ; while ( ( gfn << PAGE_SHIFT ) & ( page_size - 1 ) ) page_size >>= 1 ; while ( __gfn_to_hva_memslot ( slot , gfn ) & ( page_size - 1 ) ) page_size >>= 1 ; <S2SV_StartBug> pfn = kvm_pin_pages ( slot , gfn , page_size ) ; <S2SV_EndBug> if ( is_error_noslot_pfn ( pfn ) ) { gfn += 1 ; continue ; } r = iommu_map ( domain , gfn_to_gpa ( gfn ) , pfn_to_hpa ( pfn ) , page_size , flags ) ; if ( r ) { printk ( KERN_ERR \"kvm_iommu_map_address:\" \"iommu<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>map<S2SV_blank>pfn=%llx\\\\n\" , pfn ) ; <S2SV_StartBug> kvm_unpin_pages ( kvm , pfn , page_size ) ; <S2SV_EndBug> goto unmap_pages ; } gfn += page_size >> PAGE_SHIFT ; } return 0 ; unmap_pages : kvm_iommu_put_pages ( kvm , slot -> base_gfn , gfn - slot -> base_gfn ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gfn , page_size >> PAGE_SHIFT <S2SV_ModStart> pfn , page_size >> PAGE_SHIFT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void enc28j60SelectBank ( NetInterface * interface , uint16_t address ) { uint16_t bank ; Enc28j60Context * context ; context = ( Enc28j60Context * ) interface -> nicContext ; bank = address & REG_BANK_MASK ; if ( bank != context -> currentBank ) { <S2SV_StartBug> switch ( bank ) <S2SV_EndBug> { case BANK_0 : <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_ECON1 , ECON1_BSEL1 | ECON1_BSEL0 ) ; <S2SV_EndBug> break ; case BANK_1 : <S2SV_StartBug> enc28j60SetBit ( interface , ENC28J60_REG_ECON1 , ECON1_BSEL0 ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_ECON1 , ECON1_BSEL1 ) ; <S2SV_EndBug> break ; case BANK_2 : <S2SV_StartBug> enc28j60ClearBit ( interface , ENC28J60_REG_ECON1 , ECON1_BSEL0 ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60SetBit ( interface , ENC28J60_REG_ECON1 , ECON1_BSEL1 ) ; <S2SV_EndBug> break ; case BANK_3 : <S2SV_StartBug> enc28j60SetBit ( interface , ENC28J60_REG_ECON1 , ECON1_BSEL1 | ECON1_BSEL0 ) ; <S2SV_EndBug> break ; default : break ; } context -> currentBank = bank ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> currentBank ) { if ( bank == BANK_0 ) { <S2SV_ModEnd> enc28j60ClearBit ( interface <S2SV_ModStart> ( interface , ENC28J60_ECON1 , ENC28J60_ECON1_BSEL1 | ENC28J60_ECON1_BSEL0 ) ; } else if ( bank == BANK_1 ) { <S2SV_ModEnd> enc28j60SetBit ( interface <S2SV_ModStart> ( interface , ENC28J60_ECON1 , ENC28J60_ECON1_BSEL0 <S2SV_ModEnd> ) ; enc28j60ClearBit <S2SV_ModStart> ( interface , ENC28J60_ECON1 , ENC28J60_ECON1_BSEL1 ) ; } else if ( bank == BANK_2 ) { <S2SV_ModEnd> enc28j60ClearBit ( interface <S2SV_ModStart> ( interface , ENC28J60_ECON1 , ENC28J60_ECON1_BSEL0 <S2SV_ModEnd> ) ; enc28j60SetBit <S2SV_ModStart> ( interface , ENC28J60_ECON1 , ENC28J60_ECON1_BSEL1 ) ; } else { <S2SV_ModEnd> enc28j60SetBit ( interface <S2SV_ModStart> ( interface , ENC28J60_ECON1 , ENC28J60_ECON1_BSEL1 | ENC28J60_ECON1_BSEL0 ) <S2SV_ModEnd> ; } context\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10540\n\n```\nCWE-787 int ParseRiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int is_rf64 = ! strncmp ( fourcc , \"RF64\" , 4 ) , got_ds64 = 0 ; int64_t total_samples = 0 , infilesize ; RiffChunkHeader riff_chunk_header ; ChunkHeader chunk_header ; WaveHeader WaveHeader ; DS64Chunk ds64_chunk ; uint32_t bcount ; CLEAR ( WaveHeader ) ; CLEAR ( ds64_chunk ) ; infilesize = DoGetFileSize ( infile ) ; if ( ! is_rf64 && infilesize >= 4294967296LL && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) ) { error_line ( \"can\\'t<S2SV_blank>handle<S2SV_blank>.WAV<S2SV_blank>files<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>4<S2SV_blank>GB<S2SV_blank>(non-standard)!\" ) ; return WAVPACK_SOFT_ERROR ; } memcpy ( & riff_chunk_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & riff_chunk_header ) + 4 , sizeof ( RiffChunkHeader ) - 4 , & bcount ) || bcount != sizeof ( RiffChunkHeader ) - 4 || strncmp ( riff_chunk_header . formType , \"WAVE\" , 4 ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & riff_chunk_header , sizeof ( RiffChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( ChunkHeader ) , & bcount ) || bcount != sizeof ( ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , ChunkHeaderFormat ) ; if ( ! strncmp ( chunk_header . ckID , \"ds64\" , 4 ) ) { if ( chunk_header . ckSize < sizeof ( DS64Chunk ) || ! DoReadFile ( infile , & ds64_chunk , sizeof ( DS64Chunk ) , & bcount ) || bcount != sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & ds64_chunk , sizeof ( DS64Chunk ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } got_ds64 = 1 ; WavpackLittleEndianToNative ( & ds64_chunk , DS64ChunkFormat ) ; if ( debug_logging_mode ) error_line ( \"DS64:<S2SV_blank>riffSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>dataSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>sampleCount<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>table_length<S2SV_blank>=<S2SV_blank>%d\" , ( long long ) ds64_chunk . riffSize64 , ( long long ) ds64_chunk . dataSize64 , ( long long ) ds64_chunk . sampleCount64 , ds64_chunk . tableLength ) ; if ( ds64_chunk . tableLength * sizeof ( CS64Chunk ) != chunk_header . ckSize - sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } while ( ds64_chunk . tableLength -- ) { CS64Chunk cs64_chunk ; if ( ! DoReadFile ( infile , & cs64_chunk , sizeof ( CS64Chunk ) , & bcount ) || bcount != sizeof ( CS64Chunk ) || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & cs64_chunk , sizeof ( CS64Chunk ) ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } } } else if ( ! strncmp ( chunk_header . ckID , \"fmt<S2SV_blank>\" , 4 ) ) { int supported = TRUE , format ; if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.WAV<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>WAV<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else if ( config -> float_norm_exp ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point<S2SV_blank>(Audition<S2SV_blank>%d:%d<S2SV_blank>float<S2SV_blank>type<S2SV_blank>1)\" , config -> float_norm_exp - 126 , 150 - config -> float_norm_exp ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! strncmp ( chunk_header . ckID , \"data\" , 4 ) ) { int64_t data_chunk_size = ( got_ds64 && chunk_header . ckSize == ( uint32_t ) - 1 ) ? ds64_chunk . dataSize64 : chunk_header . ckSize ; if ( ! WaveHeader . NumChannels || ( is_rf64 && ! got_ds64 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && infilesize - data_chunk_size > 16777216 ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( config -> qmode & QMODE_IGNORE_LENGTH ) { if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { total_samples = data_chunk_size / WaveHeader . BlockAlign ; if ( got_ds64 && total_samples != ds64_chunk . sampleCount64 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 1 ) & ~ 1L ; <S2SV_StartBug> char * buff = malloc ( bytes_to_copy ) ; <S2SV_EndBug> if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int init_normalization ( struct compiling * c ) { PyObject * m = PyImport_ImportModuleNoBlock ( \"unicodedata\" ) ; if ( ! m ) return 0 ; c -> c_normalize = PyObject_GetAttrString ( m , \"normalize\" ) ; Py_DECREF ( m ) ; if ( ! c -> c_normalize ) return 0 ; <S2SV_StartBug> c -> c_normalize_args = Py_BuildValue ( \"(sN)\" , \"NFKC\" , Py_None ) ; <S2SV_EndBug> if ( ! c -> c_normalize_args ) { Py_CLEAR ( c -> c_normalize ) ; return 0 ; } PyTuple_SET_ITEM ( c -> c_normalize_args , 1 , NULL ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; <S2SV_ModEnd> return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10087\n\n```\nCWE-20 long kernel_wait4 ( pid_t upid , int __user * stat_addr , int options , struct rusage * ru ) { struct wait_opts wo ; struct pid * pid = NULL ; enum pid_type type ; long ret ; if ( options & ~ ( WNOHANG | WUNTRACED | WCONTINUED | __WNOTHREAD | __WCLONE | __WALL ) ) return - EINVAL ; <S2SV_StartBug> if ( upid == - 1 ) <S2SV_EndBug> type = PIDTYPE_MAX ; else if ( upid < 0 ) { type = PIDTYPE_PGID ; pid = find_get_pid ( - upid ) ; } else if ( upid == 0 ) { type = PIDTYPE_PGID ; pid = get_task_pid ( current , PIDTYPE_PGID ) ; } else { type = PIDTYPE_PID ; pid = find_get_pid ( upid ) ; } wo . wo_type = type ; wo . wo_pid = pid ; wo . wo_flags = options | WEXITED ; wo . wo_info = NULL ; wo . wo_stat = 0 ; wo . wo_rusage = ru ; ret = do_wait ( & wo ) ; put_pid ( pid ) ; if ( ret > 0 && stat_addr && put_user ( wo . wo_stat , stat_addr ) ) ret = - EFAULT ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( upid == INT_MIN ) return - ESRCH ; if ( upid ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0206\n\n```\nCWE-119 int dtls1_read_bytes ( SSL * s , int type , unsigned char * buf , int len , int peek ) { int al , i , j , ret ; unsigned int n ; SSL3_RECORD * rr ; void ( * cb ) ( const SSL * ssl , int type2 , int val ) = NULL ; if ( s -> s3 -> rbuf . buf == NULL ) if ( ! ssl3_setup_buffers ( s ) ) return ( - 1 ) ; if ( ( type && ( type != SSL3_RT_APPLICATION_DATA ) && ( type != SSL3_RT_HANDSHAKE ) ) || ( peek && ( type != SSL3_RT_APPLICATION_DATA ) ) ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } if ( ( ret = have_handshake_fragment ( s , type , buf , len , peek ) ) ) return ret ; # ifndef OPENSSL_NO_SCTP if ( ( ! s -> in_handshake && SSL_in_init ( s ) ) || ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && ( s -> state == DTLS1_SCTP_ST_SR_READ_SOCK || s -> state == DTLS1_SCTP_ST_CR_READ_SOCK ) && s -> s3 -> in_read_app_data != 2 ) ) # else if ( ! s -> in_handshake && SSL_in_init ( s ) ) # endif { i = s -> handshake_func ( s ) ; if ( i < 0 ) return ( i ) ; if ( i == 0 ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_SSL_HANDSHAKE_FAILURE ) ; return ( - 1 ) ; } } start : s -> rwstate = SSL_NOTHING ; rr = & ( s -> s3 -> rrec ) ; if ( s -> state == SSL_ST_OK && rr -> length == 0 ) { pitem * item ; item = pqueue_pop ( s -> d1 -> buffered_app_data . q ) ; if ( item ) { # ifndef OPENSSL_NO_SCTP if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) ) { DTLS1_RECORD_DATA * rdata = ( DTLS1_RECORD_DATA * ) item -> data ; BIO_ctrl ( SSL_get_rbio ( s ) , BIO_CTRL_DGRAM_SCTP_SET_RCVINFO , sizeof ( rdata -> recordinfo ) , & rdata -> recordinfo ) ; } # endif dtls1_copy_record ( s , item ) ; OPENSSL_free ( item -> data ) ; pitem_free ( item ) ; } } if ( dtls1_handle_timeout ( s ) > 0 ) goto start ; if ( ( rr -> length == 0 ) || ( s -> rstate == SSL_ST_READ_BODY ) ) { ret = dtls1_get_record ( s ) ; if ( ret <= 0 ) { ret = dtls1_read_failed ( s , ret ) ; if ( ret <= 0 ) return ( ret ) ; else goto start ; } } if ( s -> d1 -> listen && rr -> type != SSL3_RT_HANDSHAKE ) { rr -> length = 0 ; goto start ; } if ( s -> s3 -> change_cipher_spec && ( rr -> type != SSL3_RT_HANDSHAKE ) ) { <S2SV_StartBug> dtls1_buffer_record ( s , & ( s -> d1 -> buffered_app_data ) , rr -> seq_num ) ; <S2SV_EndBug> rr -> length = 0 ; goto start ; } if ( s -> shutdown & SSL_RECEIVED_SHUTDOWN ) { rr -> length = 0 ; s -> rwstate = SSL_NOTHING ; return ( 0 ) ; } if ( type == rr -> type ) { if ( SSL_in_init ( s ) && ( type == SSL3_RT_APPLICATION_DATA ) && ( s -> enc_read_ctx == NULL ) ) { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_APP_DATA_IN_HANDSHAKE ) ; goto f_err ; } if ( len <= 0 ) return ( len ) ; if ( ( unsigned int ) len > rr -> length ) n = rr -> length ; else n = ( unsigned int ) len ; memcpy ( buf , & ( rr -> data [ rr -> off ] ) , n ) ; if ( ! peek ) { rr -> length -= n ; rr -> off += n ; if ( rr -> length == 0 ) { s -> rstate = SSL_ST_READ_HEADER ; rr -> off = 0 ; } } # ifndef OPENSSL_NO_SCTP if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && rr -> type == SSL3_RT_APPLICATION_DATA && ( s -> state == DTLS1_SCTP_ST_SR_READ_SOCK || s -> state == DTLS1_SCTP_ST_CR_READ_SOCK ) ) { s -> rwstate = SSL_READING ; BIO_clear_retry_flags ( SSL_get_rbio ( s ) ) ; BIO_set_retry_read ( SSL_get_rbio ( s ) ) ; } if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && s -> d1 -> shutdown_received && ! BIO_dgram_sctp_msg_waiting ( SSL_get_rbio ( s ) ) ) { s -> shutdown |= SSL_RECEIVED_SHUTDOWN ; return ( 0 ) ; } # endif return ( n ) ; } { unsigned int k , dest_maxlen = 0 ; unsigned char * dest = NULL ; unsigned int * dest_len = NULL ; if ( rr -> type == SSL3_RT_HANDSHAKE ) { dest_maxlen = sizeof s -> d1 -> handshake_fragment ; dest = s -> d1 -> handshake_fragment ; dest_len = & s -> d1 -> handshake_fragment_len ; } else if ( rr -> type == SSL3_RT_ALERT ) { dest_maxlen = sizeof ( s -> d1 -> alert_fragment ) ; dest = s -> d1 -> alert_fragment ; dest_len = & s -> d1 -> alert_fragment_len ; } # ifndef OPENSSL_NO_HEARTBEATS else if ( rr -> type == TLS1_RT_HEARTBEAT ) { dtls1_process_heartbeat ( s ) ; rr -> length = 0 ; s -> rwstate = SSL_READING ; BIO_clear_retry_flags ( SSL_get_rbio ( s ) ) ; BIO_set_retry_read ( SSL_get_rbio ( s ) ) ; return ( - 1 ) ; } # endif else if ( rr -> type != SSL3_RT_CHANGE_CIPHER_SPEC ) { if ( rr -> type == SSL3_RT_APPLICATION_DATA ) { BIO * bio ; s -> s3 -> in_read_app_data = 2 ; bio = SSL_get_rbio ( s ) ; s -> rwstate = SSL_READING ; BIO_clear_retry_flags ( bio ) ; BIO_set_retry_read ( bio ) ; return ( - 1 ) ; } al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_UNEXPECTED_RECORD ) ; goto f_err ; } if ( dest_maxlen > 0 ) { if ( rr -> length < dest_maxlen ) { # ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE FIX ME # endif s -> rstate = SSL_ST_READ_HEADER ; rr -> length = 0 ; goto start ; } for ( k = 0 ; k < dest_maxlen ; k ++ ) { dest [ k ] = rr -> data [ rr -> off ++ ] ; rr -> length -- ; } * dest_len = dest_maxlen ; } } if ( ( ! s -> server ) && ( s -> d1 -> handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH ) && ( s -> d1 -> handshake_fragment [ 0 ] == SSL3_MT_HELLO_REQUEST ) && ( s -> session != NULL ) && ( s -> session -> cipher != NULL ) ) { s -> d1 -> handshake_fragment_len = 0 ; if ( ( s -> d1 -> handshake_fragment [ 1 ] != 0 ) || ( s -> d1 -> handshake_fragment [ 2 ] != 0 ) || ( s -> d1 -> handshake_fragment [ 3 ] != 0 ) ) { al = SSL_AD_DECODE_ERROR ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_BAD_HELLO_REQUEST ) ; goto err ; } if ( s -> msg_callback ) s -> msg_callback ( 0 , s -> version , SSL3_RT_HANDSHAKE , s -> d1 -> handshake_fragment , 4 , s , s -> msg_callback_arg ) ; if ( SSL_is_init_finished ( s ) && ! ( s -> s3 -> flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS ) && ! s -> s3 -> renegotiate ) { s -> d1 -> handshake_read_seq ++ ; s -> new_session = 1 ; ssl3_renegotiate ( s ) ; if ( ssl3_renegotiate_check ( s ) ) { i = s -> handshake_func ( s ) ; if ( i < 0 ) return ( i ) ; if ( i == 0 ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_SSL_HANDSHAKE_FAILURE ) ; return ( - 1 ) ; } if ( ! ( s -> mode & SSL_MODE_AUTO_RETRY ) ) { if ( s -> s3 -> rbuf . left == 0 ) { BIO * bio ; s -> rwstate = SSL_READING ; bio = SSL_get_rbio ( s ) ; BIO_clear_retry_flags ( bio ) ; BIO_set_retry_read ( bio ) ; return ( - 1 ) ; } } } } goto start ; } if ( s -> d1 -> alert_fragment_len >= DTLS1_AL_HEADER_LENGTH ) { int alert_level = s -> d1 -> alert_fragment [ 0 ] ; int alert_descr = s -> d1 -> alert_fragment [ 1 ] ; s -> d1 -> alert_fragment_len = 0 ; if ( s -> msg_callback ) s -> msg_callback ( 0 , s -> version , SSL3_RT_ALERT , s -> d1 -> alert_fragment , 2 , s , s -> msg_callback_arg ) ; if ( s -> info_callback != NULL ) cb = s -> info_callback ; else if ( s -> ctx -> info_callback != NULL ) cb = s -> ctx -> info_callback ; if ( cb != NULL ) { j = ( alert_level << 8 ) | alert_descr ; cb ( s , SSL_CB_READ_ALERT , j ) ; } if ( alert_level == 1 ) { s -> s3 -> warn_alert = alert_descr ; if ( alert_descr == SSL_AD_CLOSE_NOTIFY ) { # ifndef OPENSSL_NO_SCTP if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && BIO_dgram_sctp_msg_waiting ( SSL_get_rbio ( s ) ) ) { s -> d1 -> shutdown_received = 1 ; s -> rwstate = SSL_READING ; BIO_clear_retry_flags ( SSL_get_rbio ( s ) ) ; BIO_set_retry_read ( SSL_get_rbio ( s ) ) ; return - 1 ; } # endif s -> shutdown |= SSL_RECEIVED_SHUTDOWN ; return ( 0 ) ; } # if 0 if ( alert_descr == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE ) { unsigned short seq ; unsigned int frag_off ; unsigned char * p = & ( s -> d1 -> alert_fragment [ 2 ] ) ; n2s ( p , seq ) ; n2l3 ( p , frag_off ) ; dtls1_retransmit_message ( s , dtls1_get_queue_priority ( frag -> msg_header . seq , 0 ) , frag_off , & found ) ; if ( ! found && SSL_in_init ( s ) ) { ssl3_send_alert ( s , SSL3_AL_WARNING , DTLS1_AD_MISSING_HANDSHAKE_MESSAGE ) ; } } # endif } else if ( alert_level == 2 ) { char tmp [ 16 ] ; s -> rwstate = SSL_NOTHING ; s -> s3 -> fatal_alert = alert_descr ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_AD_REASON_OFFSET + alert_descr ) ; BIO_snprintf ( tmp , sizeof tmp , \"%d\" , alert_descr ) ; ERR_add_error_data ( 2 , \"SSL<S2SV_blank>alert<S2SV_blank>number<S2SV_blank>\" , tmp ) ; s -> shutdown |= SSL_RECEIVED_SHUTDOWN ; SSL_CTX_remove_session ( s -> ctx , s -> session ) ; return ( 0 ) ; } else { al = SSL_AD_ILLEGAL_PARAMETER ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_UNKNOWN_ALERT_TYPE ) ; goto f_err ; } goto start ; } if ( s -> shutdown & SSL_SENT_SHUTDOWN ) { s -> rwstate = SSL_NOTHING ; rr -> length = 0 ; return ( 0 ) ; } if ( rr -> type == SSL3_RT_CHANGE_CIPHER_SPEC ) { struct ccs_header_st ccs_hdr ; unsigned int ccs_hdr_len = DTLS1_CCS_HEADER_LENGTH ; dtls1_get_ccs_header ( rr -> data , & ccs_hdr ) ; if ( s -> version == DTLS1_BAD_VER ) ccs_hdr_len = 3 ; if ( ( rr -> length != ccs_hdr_len ) || ( rr -> off != 0 ) || ( rr -> data [ 0 ] != SSL3_MT_CCS ) ) { i = SSL_AD_ILLEGAL_PARAMETER ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_BAD_CHANGE_CIPHER_SPEC ) ; goto err ; } rr -> length = 0 ; if ( s -> msg_callback ) s -> msg_callback ( 0 , s -> version , SSL3_RT_CHANGE_CIPHER_SPEC , rr -> data , 1 , s , s -> msg_callback_arg ) ; if ( ! s -> d1 -> change_cipher_spec_ok ) { goto start ; } s -> d1 -> change_cipher_spec_ok = 0 ; s -> s3 -> change_cipher_spec = 1 ; if ( ! ssl3_do_change_cipher_spec ( s ) ) goto err ; dtls1_reset_seq_numbers ( s , SSL3_CC_READ ) ; if ( s -> version == DTLS1_BAD_VER ) s -> d1 -> handshake_read_seq ++ ; # ifndef OPENSSL_NO_SCTP BIO_ctrl ( SSL_get_wbio ( s ) , BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD , 1 , NULL ) ; # endif goto start ; } if ( ( s -> d1 -> handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH ) && ! s -> in_handshake ) { struct hm_header_st msg_hdr ; dtls1_get_message_header ( rr -> data , & msg_hdr ) ; if ( rr -> epoch != s -> d1 -> r_epoch ) { rr -> length = 0 ; goto start ; } if ( msg_hdr . type == SSL3_MT_FINISHED ) { if ( dtls1_check_timeout_num ( s ) < 0 ) return - 1 ; dtls1_retransmit_buffered_messages ( s ) ; rr -> length = 0 ; goto start ; } if ( ( ( s -> state & SSL_ST_MASK ) == SSL_ST_OK ) && ! ( s -> s3 -> flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS ) ) { # if 0 s -> state = SSL_ST_BEFORE | ( s -> server ) ? SSL_ST_ACCEPT : SSL_ST_CONNECT ; # else s -> state = s -> server ? SSL_ST_ACCEPT : SSL_ST_CONNECT ; # endif s -> renegotiate = 1 ; s -> new_session = 1 ; } i = s -> handshake_func ( s ) ; if ( i < 0 ) return ( i ) ; if ( i == 0 ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_SSL_HANDSHAKE_FAILURE ) ; return ( - 1 ) ; } if ( ! ( s -> mode & SSL_MODE_AUTO_RETRY ) ) { if ( s -> s3 -> rbuf . left == 0 ) { BIO * bio ; s -> rwstate = SSL_READING ; bio = SSL_get_rbio ( s ) ; BIO_clear_retry_flags ( bio ) ; BIO_set_retry_read ( bio ) ; return ( - 1 ) ; } } goto start ; } switch ( rr -> type ) { default : # ifndef OPENSSL_NO_TLS if ( s -> version == TLS1_VERSION ) { rr -> length = 0 ; goto start ; } # endif al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_UNEXPECTED_RECORD ) ; goto f_err ; case SSL3_RT_CHANGE_CIPHER_SPEC : case SSL3_RT_ALERT : case SSL3_RT_HANDSHAKE : al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , ERR_R_INTERNAL_ERROR ) ; goto f_err ; case SSL3_RT_APPLICATION_DATA : if ( s -> s3 -> in_read_app_data && ( s -> s3 -> total_renegotiations != 0 ) && ( ( ( s -> state & SSL_ST_CONNECT ) && ( s -> state >= SSL3_ST_CW_CLNT_HELLO_A ) && ( s -> state <= SSL3_ST_CR_SRVR_HELLO_A ) ) || ( ( s -> state & SSL_ST_ACCEPT ) && ( s -> state <= SSL3_ST_SW_HELLO_REQ_A ) && ( s -> state >= SSL3_ST_SR_CLNT_HELLO_A ) ) ) ) { s -> s3 -> in_read_app_data = 2 ; return ( - 1 ) ; } else { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_UNEXPECTED_RECORD ) ; goto f_err ; } } f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( <S2SV_ModStart> -> seq_num ) < 0 ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } <S2SV_ModEnd> rr -> length\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2234\n\n```\nCWE-119 static int key_notify_sa_flush ( const struct km_event * c ) { struct sk_buff * skb ; struct sadb_msg * hdr ; skb = alloc_skb ( sizeof ( struct sadb_msg ) + 16 , GFP_ATOMIC ) ; if ( ! skb ) return - ENOBUFS ; hdr = ( struct sadb_msg * ) skb_put ( skb , sizeof ( struct sadb_msg ) ) ; hdr -> sadb_msg_satype = pfkey_proto2satype ( c -> data . proto ) ; hdr -> sadb_msg_type = SADB_FLUSH ; hdr -> sadb_msg_seq = c -> seq ; hdr -> sadb_msg_pid = c -> portid ; hdr -> sadb_msg_version = PF_KEY_V2 ; hdr -> sadb_msg_errno = ( uint8_t ) 0 ; hdr -> sadb_msg_len = ( sizeof ( struct sadb_msg ) / sizeof ( uint64_t ) ) ; <S2SV_StartBug> pfkey_broadcast ( skb , GFP_ATOMIC , BROADCAST_ALL , NULL , c -> net ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; hdr -> sadb_msg_reserved = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 int x86_emulate_insn ( struct x86_emulate_ctxt * ctxt ) { const struct x86_emulate_ops * ops = ctxt -> ops ; int rc = X86EMUL_CONTINUE ; int saved_dst_type = ctxt -> dst . type ; ctxt -> mem_read . pos = 0 ; if ( ctxt -> lock_prefix && ( ! ( ctxt -> d & Lock ) || ctxt -> dst . type != OP_MEM ) ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( ( ctxt -> d & SrcMask ) == SrcMemFAddr && ctxt -> src . type != OP_MEM ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( unlikely ( ctxt -> d & ( No64 | Undefined | Sse | Mmx | Intercept | CheckPerm | Priv | Prot | String ) ) ) { if ( ( ctxt -> mode == X86EMUL_MODE_PROT64 && ( ctxt -> d & No64 ) ) || ( ctxt -> d & Undefined ) ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( ( ( ctxt -> d & ( Sse | Mmx ) ) && ( ( ops -> get_cr ( ctxt , 0 ) & X86_CR0_EM ) ) ) || ( ( ctxt -> d & Sse ) && ! ( ops -> get_cr ( ctxt , 4 ) & X86_CR4_OSFXSR ) ) ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( ( ctxt -> d & ( Sse | Mmx ) ) && ( ops -> get_cr ( ctxt , 0 ) & X86_CR0_TS ) ) { rc = emulate_nm ( ctxt ) ; goto done ; } if ( ctxt -> d & Mmx ) { rc = flush_pending_x87_faults ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; fetch_possible_mmx_operand ( ctxt , & ctxt -> src ) ; fetch_possible_mmx_operand ( ctxt , & ctxt -> src2 ) ; if ( ! ( ctxt -> d & Mov ) ) fetch_possible_mmx_operand ( ctxt , & ctxt -> dst ) ; } if ( unlikely ( ctxt -> guest_mode ) && ( ctxt -> d & Intercept ) ) { rc = emulator_check_intercept ( ctxt , ctxt -> intercept , X86_ICPT_PRE_EXCEPT ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ( ctxt -> d & Priv ) && ops -> cpl ( ctxt ) ) { if ( ctxt -> d & PrivUD ) rc = emulate_ud ( ctxt ) ; else rc = emulate_gp ( ctxt , 0 ) ; goto done ; } if ( ( ctxt -> d & Prot ) && ctxt -> mode < X86EMUL_MODE_PROT16 ) { rc = emulate_ud ( ctxt ) ; goto done ; } if ( ctxt -> d & CheckPerm ) { rc = ctxt -> check_perm ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( unlikely ( ctxt -> guest_mode ) && ( ctxt -> d & Intercept ) ) { rc = emulator_check_intercept ( ctxt , ctxt -> intercept , X86_ICPT_POST_EXCEPT ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ctxt -> rep_prefix && ( ctxt -> d & String ) ) { if ( address_mask ( ctxt , reg_read ( ctxt , VCPU_REGS_RCX ) ) == 0 ) { ctxt -> eip = ctxt -> _eip ; ctxt -> eflags &= ~ EFLG_RF ; goto done ; } } } if ( ( ctxt -> src . type == OP_MEM ) && ! ( ctxt -> d & NoAccess ) ) { rc = segmented_read ( ctxt , ctxt -> src . addr . mem , ctxt -> src . valptr , ctxt -> src . bytes ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; ctxt -> src . orig_val64 = ctxt -> src . val64 ; } if ( ctxt -> src2 . type == OP_MEM ) { rc = segmented_read ( ctxt , ctxt -> src2 . addr . mem , & ctxt -> src2 . val , ctxt -> src2 . bytes ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ( ctxt -> d & DstMask ) == ImplicitOps ) goto special_insn ; if ( ( ctxt -> dst . type == OP_MEM ) && ! ( ctxt -> d & Mov ) ) { rc = segmented_read ( ctxt , ctxt -> dst . addr . mem , & ctxt -> dst . val , ctxt -> dst . bytes ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } ctxt -> dst . orig_val = ctxt -> dst . val ; special_insn : if ( unlikely ( ctxt -> guest_mode ) && ( ctxt -> d & Intercept ) ) { rc = emulator_check_intercept ( ctxt , ctxt -> intercept , X86_ICPT_POST_MEMACCESS ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ctxt -> rep_prefix && ( ctxt -> d & String ) ) ctxt -> eflags |= EFLG_RF ; else ctxt -> eflags &= ~ EFLG_RF ; if ( ctxt -> execute ) { if ( ctxt -> d & Fastop ) { void ( * fop ) ( struct fastop * ) = ( void * ) ctxt -> execute ; rc = fastop ( ctxt , fop ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; goto writeback ; } rc = ctxt -> execute ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; goto writeback ; } if ( ctxt -> opcode_len == 2 ) goto twobyte_insn ; else if ( ctxt -> opcode_len == 3 ) goto threebyte_insn ; switch ( ctxt -> b ) { case 0x63 : if ( ctxt -> mode != X86EMUL_MODE_PROT64 ) goto cannot_emulate ; ctxt -> dst . val = ( s32 ) ctxt -> src . val ; break ; case 0x70 ... 0x7f : if ( test_cc ( ctxt -> b , ctxt -> eflags ) ) <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> break ; case 0x8d : ctxt -> dst . val = ctxt -> src . addr . mem . ea ; break ; case 0x90 ... 0x97 : if ( ctxt -> dst . addr . reg == reg_rmw ( ctxt , VCPU_REGS_RAX ) ) ctxt -> dst . type = OP_NONE ; else rc = em_xchg ( ctxt ) ; break ; case 0x98 : switch ( ctxt -> op_bytes ) { case 2 : ctxt -> dst . val = ( s8 ) ctxt -> dst . val ; break ; case 4 : ctxt -> dst . val = ( s16 ) ctxt -> dst . val ; break ; case 8 : ctxt -> dst . val = ( s32 ) ctxt -> dst . val ; break ; } break ; case 0xcc : rc = emulate_int ( ctxt , 3 ) ; break ; case 0xcd : rc = emulate_int ( ctxt , ctxt -> src . val ) ; break ; case 0xce : if ( ctxt -> eflags & EFLG_OF ) rc = emulate_int ( ctxt , 4 ) ; break ; case 0xe9 : case 0xeb : <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> ctxt -> dst . type = OP_NONE ; break ; case 0xf4 : ctxt -> ops -> halt ( ctxt ) ; break ; case 0xf5 : ctxt -> eflags ^= EFLG_CF ; break ; case 0xf8 : ctxt -> eflags &= ~ EFLG_CF ; break ; case 0xf9 : ctxt -> eflags |= EFLG_CF ; break ; case 0xfc : ctxt -> eflags &= ~ EFLG_DF ; break ; case 0xfd : ctxt -> eflags |= EFLG_DF ; break ; default : goto cannot_emulate ; } if ( rc != X86EMUL_CONTINUE ) goto done ; writeback : if ( ctxt -> d & SrcWrite ) { BUG_ON ( ctxt -> src . type == OP_MEM || ctxt -> src . type == OP_MEM_STR ) ; rc = writeback ( ctxt , & ctxt -> src ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } if ( ! ( ctxt -> d & NoWrite ) ) { rc = writeback ( ctxt , & ctxt -> dst ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; } ctxt -> dst . type = saved_dst_type ; if ( ( ctxt -> d & SrcMask ) == SrcSI ) string_addr_inc ( ctxt , VCPU_REGS_RSI , & ctxt -> src ) ; if ( ( ctxt -> d & DstMask ) == DstDI ) string_addr_inc ( ctxt , VCPU_REGS_RDI , & ctxt -> dst ) ; if ( ctxt -> rep_prefix && ( ctxt -> d & String ) ) { unsigned int count ; struct read_cache * r = & ctxt -> io_read ; if ( ( ctxt -> d & SrcMask ) == SrcSI ) count = ctxt -> src . count ; else count = ctxt -> dst . count ; register_address_increment ( ctxt , reg_rmw ( ctxt , VCPU_REGS_RCX ) , - count ) ; if ( ! string_insn_completed ( ctxt ) ) { if ( ( r -> end != 0 || reg_read ( ctxt , VCPU_REGS_RCX ) & 0x3ff ) && ( r -> end == 0 || r -> end != r -> pos ) ) { ctxt -> mem_read . end = 0 ; writeback_registers ( ctxt ) ; return EMULATION_RESTART ; } goto done ; } ctxt -> eflags &= ~ EFLG_RF ; } ctxt -> eip = ctxt -> _eip ; done : if ( rc == X86EMUL_PROPAGATE_FAULT ) { WARN_ON ( ctxt -> exception . vector > 0x1f ) ; ctxt -> have_exception = true ; } if ( rc == X86EMUL_INTERCEPTED ) return EMULATION_INTERCEPTED ; if ( rc == X86EMUL_CONTINUE ) writeback_registers ( ctxt ) ; return ( rc == X86EMUL_UNHANDLEABLE ) ? EMULATION_FAILED : EMULATION_OK ; twobyte_insn : switch ( ctxt -> b ) { case 0x09 : ( ctxt -> ops -> wbinvd ) ( ctxt ) ; break ; case 0x08 : case 0x0d : case 0x18 : case 0x1f : break ; case 0x20 : ctxt -> dst . val = ops -> get_cr ( ctxt , ctxt -> modrm_reg ) ; break ; case 0x21 : ops -> get_dr ( ctxt , ctxt -> modrm_reg , & ctxt -> dst . val ) ; break ; case 0x40 ... 0x4f : if ( test_cc ( ctxt -> b , ctxt -> eflags ) ) ctxt -> dst . val = ctxt -> src . val ; else if ( ctxt -> mode != X86EMUL_MODE_PROT64 || ctxt -> op_bytes != 4 ) ctxt -> dst . type = OP_NONE ; break ; case 0x80 ... 0x8f : if ( test_cc ( ctxt -> b , ctxt -> eflags ) ) <S2SV_StartBug> jmp_rel ( ctxt , ctxt -> src . val ) ; <S2SV_EndBug> break ; case 0x90 ... 0x9f : ctxt -> dst . val = test_cc ( ctxt -> b , ctxt -> eflags ) ; break ; case 0xae : break ; case 0xb6 ... 0xb7 : ctxt -> dst . bytes = ctxt -> op_bytes ; ctxt -> dst . val = ( ctxt -> src . bytes == 1 ) ? ( u8 ) ctxt -> src . val : ( u16 ) ctxt -> src . val ; break ; case 0xbe ... 0xbf : ctxt -> dst . bytes = ctxt -> op_bytes ; ctxt -> dst . val = ( ctxt -> src . bytes == 1 ) ? ( s8 ) ctxt -> src . val : ( s16 ) ctxt -> src . val ; break ; case 0xc3 : ctxt -> dst . bytes = ctxt -> op_bytes ; ctxt -> dst . val = ( ctxt -> op_bytes == 8 ) ? ( u64 ) ctxt -> src . val : ( u32 ) ctxt -> src . val ; break ; default : goto cannot_emulate ; } threebyte_insn : if ( rc != X86EMUL_CONTINUE ) goto done ; goto writeback ; cannot_emulate : return EMULATION_FAILED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> eflags ) ) rc = <S2SV_ModStart> case 0xeb : rc = <S2SV_ModStart> eflags ) ) rc =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2069\n\n```\nCWE-362 void flush_tlb_page ( struct vm_area_struct * vma , unsigned long start ) { struct mm_struct * mm = vma -> vm_mm ; preempt_disable ( ) ; if ( current -> active_mm == mm ) { <S2SV_StartBug> if ( current -> mm ) <S2SV_EndBug> __flush_tlb_one ( start ) ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> leave_mm ( smp_processor_id ( ) ) ; <S2SV_EndBug> } if ( cpumask_any_but ( mm_cpumask ( mm ) , smp_processor_id ( ) ) < nr_cpu_ids ) flush_tlb_others ( mm_cpumask ( mm ) , mm , start , 0UL ) ; preempt_enable ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mm ) { <S2SV_ModStart> start ) ; } else { <S2SV_ModEnd> leave_mm ( smp_processor_id <S2SV_ModStart> ) ) ; smp_mb ( ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int conditional_skipintra ( MB_PREDICTION_MODE mode , <S2SV_EndBug> MB_PREDICTION_MODE best_intra_mode ) { if ( mode == D117_PRED && best_intra_mode != V_PRED && best_intra_mode != D135_PRED ) return 1 ; if ( mode == D63_PRED && best_intra_mode != V_PRED && best_intra_mode != D45_PRED ) return 1 ; if ( mode == D207_PRED && best_intra_mode != H_PRED && best_intra_mode != D45_PRED ) return 1 ; if ( mode == D153_PRED && best_intra_mode != H_PRED && best_intra_mode != D135_PRED ) return 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int conditional_skipintra ( PREDICTION_MODE mode , PREDICTION_MODE <S2SV_ModEnd> best_intra_mode ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1477\n\n```\nCWE-119 static void opl3_setup_voice ( int dev , int voice , int chn ) { <S2SV_StartBug> struct channel_info * info = <S2SV_EndBug> & synth_devs [ dev ] -> chn_info [ chn ] ; opl3_set_instr ( dev , voice , info -> pgm_num ) ; devc -> voc [ voice ] . bender = 0 ; devc -> voc [ voice ] . bender_range = info -> bender_range ; devc -> voc [ voice ] . volume = info -> controllers [ CTL_MAIN_VOLUME ] ; devc -> voc [ voice ] . panning = ( info -> controllers [ CTL_PAN ] * 2 ) - 128 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> channel_info * info ; if ( voice < 0 || voice >= devc -> nr_voice ) return ; if ( chn < 0 || chn > 15 ) return ; info\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7411\n\n```\nCWE-119 static inline int object_common2 ( UNSERIALIZE_PARAMETER , long elements ) { zval * retval_ptr = NULL ; zval fname ; if ( Z_TYPE_PP ( rval ) != IS_OBJECT ) { return 0 ; } if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_OBJPROP_PP ( rval ) , elements , 1 ) ) { if ( Z_TYPE_PP ( rval ) == IS_OBJECT ) { zend_hash_clean ( Z_OBJPROP_PP ( rval ) ) ; <S2SV_StartBug> } <S2SV_EndBug> ZVAL_NULL ( * rval ) ; return 0 ; } if ( Z_TYPE_PP ( rval ) != IS_OBJECT ) { return 0 ; } if ( Z_OBJCE_PP ( rval ) != PHP_IC_ENTRY && zend_hash_exists ( & Z_OBJCE_PP ( rval ) -> function_table , \"__wakeup\" , sizeof ( \"__wakeup\" ) ) ) { INIT_PZVAL ( & fname ) ; ZVAL_STRINGL ( & fname , \"__wakeup\" , sizeof ( \"__wakeup\" ) - 1 , 0 ) ; BG ( serialize_lock ) ++ ; call_user_function_ex ( CG ( function_table ) , rval , & fname , & retval_ptr , 0 , 0 , 1 , NULL TSRMLS_CC ) ; BG ( serialize_lock ) -- ; } if ( retval_ptr ) { zval_ptr_dtor ( & retval_ptr ) ; } if ( EG ( exception ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; zend_object_store_ctor_failed ( * rval TSRMLS_CC ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0069\n\n```\nCWE-119 static ssize_t cifs_iovec_write ( struct file * file , const struct iovec * iov , unsigned long nr_segs , loff_t * poffset ) { unsigned long nr_pages , i ; <S2SV_StartBug> size_t copied , len , cur_len ; <S2SV_EndBug> ssize_t total_written = 0 ; loff_t offset ; struct iov_iter it ; struct cifsFileInfo * open_file ; struct cifs_tcon * tcon ; struct cifs_sb_info * cifs_sb ; struct cifs_writedata * wdata , * tmp ; struct list_head wdata_list ; int rc ; pid_t pid ; len = iov_length ( iov , nr_segs ) ; if ( ! len ) return 0 ; rc = generic_write_checks ( file , poffset , & len , 0 ) ; if ( rc ) return rc ; INIT_LIST_HEAD ( & wdata_list ) ; cifs_sb = CIFS_SB ( file -> f_path . dentry -> d_sb ) ; open_file = file -> private_data ; tcon = tlink_tcon ( open_file -> tlink ) ; if ( ! tcon -> ses -> server -> ops -> async_writev ) return - ENOSYS ; offset = * poffset ; if ( cifs_sb -> mnt_cifs_flags & CIFS_MOUNT_RWPIDFORWARD ) pid = open_file -> pid ; else pid = current -> tgid ; iov_iter_init ( & it , iov , nr_segs , len , 0 ) ; do { size_t save_len ; nr_pages = get_numpages ( cifs_sb -> wsize , len , & cur_len ) ; wdata = cifs_writedata_alloc ( nr_pages , cifs_uncached_writev_complete ) ; if ( ! wdata ) { rc = - ENOMEM ; break ; } rc = cifs_write_allocate_pages ( wdata -> pages , nr_pages ) ; if ( rc ) { kfree ( wdata ) ; break ; } save_len = cur_len ; for ( i = 0 ; i < nr_pages ; i ++ ) { <S2SV_StartBug> copied = min_t ( const size_t , cur_len , PAGE_SIZE ) ; <S2SV_EndBug> copied = iov_iter_copy_from_user ( wdata -> pages [ i ] , & it , <S2SV_StartBug> 0 , copied ) ; <S2SV_EndBug> cur_len -= copied ; iov_iter_advance ( & it , copied ) ; <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> cur_len = save_len - cur_len ; <S2SV_EndBug> wdata -> sync_mode = WB_SYNC_ALL ; wdata -> nr_pages = nr_pages ; wdata -> offset = ( __u64 ) offset ; wdata -> cfile = cifsFileInfo_get ( open_file ) ; wdata -> pid = pid ; wdata -> bytes = cur_len ; wdata -> pagesz = PAGE_SIZE ; wdata -> tailsz = cur_len - ( ( nr_pages - 1 ) * PAGE_SIZE ) ; rc = cifs_uncached_retry_writev ( wdata ) ; if ( rc ) { kref_put ( & wdata -> refcount , cifs_uncached_writedata_release ) ; break ; } list_add_tail ( & wdata -> list , & wdata_list ) ; offset += cur_len ; len -= cur_len ; } while ( len > 0 ) ; if ( ! list_empty ( & wdata_list ) ) rc = 0 ; restart_loop : list_for_each_entry_safe ( wdata , tmp , & wdata_list , list ) { if ( ! rc ) { rc = wait_for_completion_killable ( & wdata -> done ) ; if ( rc ) rc = - EINTR ; else if ( wdata -> result ) rc = wdata -> result ; else total_written += wdata -> bytes ; if ( rc == - EAGAIN ) { rc = cifs_uncached_retry_writev ( wdata ) ; goto restart_loop ; } } list_del_init ( & wdata -> list ) ; kref_put ( & wdata -> refcount , cifs_uncached_writedata_release ) ; } if ( total_written > 0 ) * poffset += total_written ; cifs_stats_bytes_written ( tcon , total_written ) ; return total_written ? total_written : ( ssize_t ) rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ; size_t bytes , <S2SV_ModStart> ++ ) { bytes <S2SV_ModEnd> = min_t ( <S2SV_ModStart> , 0 , bytes <S2SV_ModEnd> ) ; cur_len <S2SV_ModStart> copied ) ; if ( copied < bytes ) break ; <S2SV_ModStart> save_len - cur_len ; if ( ! cur_len ) { for ( i = 0 ; i < nr_pages ; i ++ ) put_page ( wdata -> pages [ i ] ) ; kfree ( wdata ) ; rc = - EFAULT ; break ; } for ( ; nr_pages > i + 1 ; nr_pages -- ) put_page ( wdata -> pages [ nr_pages - 1 ] )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_default_lf_deltas ( VP8_COMP * cpi ) { cpi -> mb . e_mbd . mode_ref_lf_delta_enabled = 1 ; cpi -> mb . e_mbd . mode_ref_lf_delta_update = 1 ; <S2SV_StartBug> vpx_memset ( cpi -> mb . e_mbd . ref_lf_deltas , 0 , sizeof ( cpi -> mb . e_mbd . ref_lf_deltas ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( cpi -> mb . e_mbd . mode_lf_deltas , 0 , sizeof ( cpi -> mb . e_mbd . mode_lf_deltas ) ) ; <S2SV_EndBug> cpi -> mb . e_mbd . ref_lf_deltas [ INTRA_FRAME ] = 2 ; cpi -> mb . e_mbd . ref_lf_deltas [ LAST_FRAME ] = 0 ; cpi -> mb . e_mbd . ref_lf_deltas [ GOLDEN_FRAME ] = - 2 ; cpi -> mb . e_mbd . ref_lf_deltas [ ALTREF_FRAME ] = - 2 ; cpi -> mb . e_mbd . mode_lf_deltas [ 0 ] = 4 ; if ( cpi -> oxcf . Mode == MODE_REALTIME ) cpi -> mb . e_mbd . mode_lf_deltas [ 1 ] = - 12 ; else cpi -> mb . e_mbd . mode_lf_deltas [ 1 ] = - 2 ; cpi -> mb . e_mbd . mode_lf_deltas [ 2 ] = 2 ; cpi -> mb . e_mbd . mode_lf_deltas [ 3 ] = 4 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 1 ; memset <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( cpi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9421\n\n```\nCWE-000 bool_t xdr_krb5_tl_data ( XDR * xdrs , krb5_tl_data * * tl_data_head ) { krb5_tl_data * tl , * tl2 ; bool_t more ; unsigned int len ; switch ( xdrs -> x_op ) { case XDR_FREE : tl = tl2 = * tl_data_head ; while ( tl ) { tl2 = tl -> tl_data_next ; free ( tl -> tl_data_contents ) ; free ( tl ) ; tl = tl2 ; } <S2SV_StartBug> break ; <S2SV_EndBug> case XDR_ENCODE : tl = * tl_data_head ; while ( 1 ) { more = ( tl != NULL ) ; if ( ! xdr_bool ( xdrs , & more ) ) return FALSE ; if ( tl == NULL ) break ; if ( ! xdr_krb5_int16 ( xdrs , & tl -> tl_data_type ) ) return FALSE ; len = tl -> tl_data_length ; if ( ! xdr_bytes ( xdrs , ( char * * ) & tl -> tl_data_contents , & len , ~ 0 ) ) return FALSE ; tl = tl -> tl_data_next ; } break ; case XDR_DECODE : tl = NULL ; while ( 1 ) { if ( ! xdr_bool ( xdrs , & more ) ) return FALSE ; if ( more == FALSE ) break ; tl2 = ( krb5_tl_data * ) malloc ( sizeof ( krb5_tl_data ) ) ; if ( tl2 == NULL ) return FALSE ; memset ( tl2 , 0 , sizeof ( krb5_tl_data ) ) ; if ( ! xdr_krb5_int16 ( xdrs , & tl2 -> tl_data_type ) ) return FALSE ; if ( ! xdr_bytes ( xdrs , ( char * * ) & tl2 -> tl_data_contents , & len , ~ 0 ) ) return FALSE ; tl2 -> tl_data_length = len ; tl2 -> tl_data_next = tl ; tl = tl2 ; } * tl_data_head = tl ; break ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tl2 ; } * tl_data_head = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6638\n\n```\nCWE-399 int tcp_rcv_state_process ( struct sock * sk , struct sk_buff * skb , const struct tcphdr * th , unsigned int len ) { struct tcp_sock * tp = tcp_sk ( sk ) ; struct inet_connection_sock * icsk = inet_csk ( sk ) ; int queued = 0 ; int res ; tp -> rx_opt . saw_tstamp = 0 ; switch ( sk -> sk_state ) { case TCP_CLOSE : goto discard ; case TCP_LISTEN : if ( th -> ack ) return 1 ; if ( th -> rst ) goto discard ; if ( th -> syn ) { <S2SV_StartBug> if ( icsk -> icsk_af_ops -> conn_request ( sk , skb ) < 0 ) <S2SV_EndBug> return 1 ; kfree_skb ( skb ) ; return 0 ; } goto discard ; case TCP_SYN_SENT : queued = tcp_rcv_synsent_state_process ( sk , skb , th , len ) ; if ( queued >= 0 ) return queued ; tcp_urg ( sk , skb , th ) ; __kfree_skb ( skb ) ; tcp_data_snd_check ( sk ) ; return 0 ; } res = tcp_validate_incoming ( sk , skb , th , 0 ) ; if ( res <= 0 ) return - res ; if ( th -> ack ) { int acceptable = tcp_ack ( sk , skb , FLAG_SLOWPATH ) > 0 ; switch ( sk -> sk_state ) { case TCP_SYN_RECV : if ( acceptable ) { tp -> copied_seq = tp -> rcv_nxt ; smp_mb ( ) ; tcp_set_state ( sk , TCP_ESTABLISHED ) ; sk -> sk_state_change ( sk ) ; if ( sk -> sk_socket ) sk_wake_async ( sk , SOCK_WAKE_IO , POLL_OUT ) ; tp -> snd_una = TCP_SKB_CB ( skb ) -> ack_seq ; tp -> snd_wnd = ntohs ( th -> window ) << tp -> rx_opt . snd_wscale ; tcp_init_wl ( tp , TCP_SKB_CB ( skb ) -> seq ) ; if ( tp -> rx_opt . tstamp_ok ) tp -> advmss -= TCPOLEN_TSTAMP_ALIGNED ; icsk -> icsk_af_ops -> rebuild_header ( sk ) ; tcp_init_metrics ( sk ) ; tcp_init_congestion_control ( sk ) ; tp -> lsndtime = tcp_time_stamp ; tcp_mtup_init ( sk ) ; tcp_initialize_rcv_mss ( sk ) ; tcp_init_buffer_space ( sk ) ; tcp_fast_path_on ( tp ) ; } else { return 1 ; } break ; case TCP_FIN_WAIT1 : if ( tp -> snd_una == tp -> write_seq ) { tcp_set_state ( sk , TCP_FIN_WAIT2 ) ; sk -> sk_shutdown |= SEND_SHUTDOWN ; dst_confirm ( __sk_dst_get ( sk ) ) ; if ( ! sock_flag ( sk , SOCK_DEAD ) ) sk -> sk_state_change ( sk ) ; else { int tmo ; if ( tp -> linger2 < 0 || ( TCP_SKB_CB ( skb ) -> end_seq != TCP_SKB_CB ( skb ) -> seq && after ( TCP_SKB_CB ( skb ) -> end_seq - th -> fin , tp -> rcv_nxt ) ) ) { tcp_done ( sk ) ; NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_TCPABORTONDATA ) ; return 1 ; } tmo = tcp_fin_time ( sk ) ; if ( tmo > TCP_TIMEWAIT_LEN ) { inet_csk_reset_keepalive_timer ( sk , tmo - TCP_TIMEWAIT_LEN ) ; } else if ( th -> fin || sock_owned_by_user ( sk ) ) { inet_csk_reset_keepalive_timer ( sk , tmo ) ; } else { tcp_time_wait ( sk , TCP_FIN_WAIT2 , tmo ) ; goto discard ; } } } break ; case TCP_CLOSING : if ( tp -> snd_una == tp -> write_seq ) { tcp_time_wait ( sk , TCP_TIME_WAIT , 0 ) ; goto discard ; } break ; case TCP_LAST_ACK : if ( tp -> snd_una == tp -> write_seq ) { tcp_update_metrics ( sk ) ; tcp_done ( sk ) ; goto discard ; } break ; } } else goto discard ; tcp_urg ( sk , skb , th ) ; switch ( sk -> sk_state ) { case TCP_CLOSE_WAIT : case TCP_CLOSING : case TCP_LAST_ACK : if ( ! before ( TCP_SKB_CB ( skb ) -> seq , tp -> rcv_nxt ) ) break ; case TCP_FIN_WAIT1 : case TCP_FIN_WAIT2 : if ( sk -> sk_shutdown & RCV_SHUTDOWN ) { if ( TCP_SKB_CB ( skb ) -> end_seq != TCP_SKB_CB ( skb ) -> seq && after ( TCP_SKB_CB ( skb ) -> end_seq - th -> fin , tp -> rcv_nxt ) ) { NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_TCPABORTONDATA ) ; tcp_reset ( sk ) ; return 1 ; } } case TCP_ESTABLISHED : tcp_data_queue ( sk , skb ) ; queued = 1 ; break ; } if ( sk -> sk_state != TCP_CLOSE ) { tcp_data_snd_check ( sk ) ; tcp_ack_snd_check ( sk ) ; } if ( ! queued ) { discard : __kfree_skb ( skb ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( th -> fin ) goto discard ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void write_inter_mode ( vp9_writer * w , MB_PREDICTION_MODE mode , <S2SV_EndBug> <S2SV_StartBug> const vp9_prob * probs ) { <S2SV_EndBug> assert ( is_inter_mode ( mode ) ) ; vp9_write_token ( w , vp9_inter_mode_tree , probs , & inter_mode_encodings [ INTER_OFFSET ( mode ) ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void write_inter_mode ( vpx_writer <S2SV_ModEnd> * w , <S2SV_ModStart> * w , PREDICTION_MODE <S2SV_ModEnd> mode , const <S2SV_ModStart> mode , const vpx_prob <S2SV_ModEnd> * probs )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15090\n\n```\nCWE-125 void qedi_dbg_info ( struct qedi_dbg_ctx * qedi , const char * func , u32 line , u32 level , const char * fmt , ... ) { va_list va ; <S2SV_StartBug> struct va_format vaf ; <S2SV_EndBug> char nfunc [ 32 ] ; memset ( nfunc , 0 , sizeof ( nfunc ) ) ; memcpy ( nfunc , func , sizeof ( nfunc ) - 1 ) ; va_start ( va , fmt ) ; vaf . fmt = fmt ; vaf . va = & va ; if ( ! ( qedi_dbg_log & level ) ) goto ret ; if ( likely ( qedi ) && likely ( qedi -> pdev ) ) pr_info ( \"[%s]:[%s:%d]:%d:<S2SV_blank>%pV\" , dev_name ( & qedi -> pdev -> dev ) , <S2SV_StartBug> nfunc , line , qedi -> host_no , & vaf ) ; <S2SV_EndBug> else <S2SV_StartBug> pr_info ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , nfunc , line , & vaf ) ; <S2SV_EndBug> ret : va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct va_format vaf <S2SV_ModEnd> ; va_start ( <S2SV_ModStart> dev ) , func <S2SV_ModEnd> , line , <S2SV_ModStart> ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , func <S2SV_ModEnd> , line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9538\n\n```\nCWE-190 static int readSeparateStripsIntoBuffer ( TIFF * in , uint8 * obuf , uint32 length , uint32 width , uint16 spp , struct dump_opts * dump ) { <S2SV_StartBug> int i , j , bytes_per_sample , bytes_per_pixel , shift_width , result = 1 ; <S2SV_EndBug> int32 bytes_read = 0 ; <S2SV_StartBug> uint16 bps , nstrips , planar , strips_per_sample ; <S2SV_EndBug> uint32 src_rowsize , dst_rowsize , rows_processed , rps ; uint32 rows_this_strip = 0 ; tsample_t s ; tstrip_t strip ; tsize_t scanlinesize = TIFFScanlineSize ( in ) ; tsize_t stripsize = TIFFStripSize ( in ) ; unsigned char * srcbuffs [ MAX_SAMPLES ] ; unsigned char * buff = NULL ; unsigned char * dst = NULL ; if ( obuf == NULL ) { TIFFError ( \"readSeparateStripsIntoBuffer\" , \"Invalid<S2SV_blank>buffer<S2SV_blank>argument\" ) ; return ( 0 ) ; } memset ( srcbuffs , '\\\\0' , sizeof ( srcbuffs ) ) ; TIFFGetField ( in , TIFFTAG_BITSPERSAMPLE , & bps ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_PLANARCONFIG , & planar ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_ROWSPERSTRIP , & rps ) ; if ( rps > length ) rps = length ; bytes_per_sample = ( bps + 7 ) / 8 ; bytes_per_pixel = ( ( bps * spp ) + 7 ) / 8 ; if ( bytes_per_pixel < ( bytes_per_sample + 1 ) ) shift_width = bytes_per_pixel ; else shift_width = bytes_per_sample + 1 ; src_rowsize = ( ( bps * width ) + 7 ) / 8 ; dst_rowsize = ( ( bps * width * spp ) + 7 ) / 8 ; dst = obuf ; if ( ( dump -> infile != NULL ) && ( dump -> level == 3 ) ) { dump_info ( dump -> infile , dump -> format , \"\" , \"Image<S2SV_blank>width<S2SV_blank>%d,<S2SV_blank>length<S2SV_blank>%d,<S2SV_blank>Scanline<S2SV_blank>size,<S2SV_blank>%4d<S2SV_blank>bytes\" , width , length , scanlinesize ) ; dump_info ( dump -> infile , dump -> format , \"\" , \"Bits<S2SV_blank>per<S2SV_blank>sample<S2SV_blank>%d,<S2SV_blank>Samples<S2SV_blank>per<S2SV_blank>pixel<S2SV_blank>%d,<S2SV_blank>Shift<S2SV_blank>width<S2SV_blank>%d\" , bps , spp , shift_width ) ; } nstrips = TIFFNumberOfStrips ( in ) ; strips_per_sample = nstrips / spp ; for ( s = 0 ; ( s < spp ) && ( s < MAX_SAMPLES ) ; s ++ ) { srcbuffs [ s ] = NULL ; buff = _TIFFmalloc ( stripsize ) ; if ( ! buff ) { TIFFError ( \"readSeparateStripsIntoBuffer\" , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>strip<S2SV_blank>read<S2SV_blank>buffer<S2SV_blank>for<S2SV_blank>sample<S2SV_blank>%d\" , s ) ; for ( i = 0 ; i < s ; i ++ ) _TIFFfree ( srcbuffs [ i ] ) ; return 0 ; } srcbuffs [ s ] = buff ; } rows_processed = 0 ; for ( j = 0 ; ( j < strips_per_sample ) && ( result == 1 ) ; j ++ ) { for ( s = 0 ; ( s < spp ) && ( s < MAX_SAMPLES ) ; s ++ ) { buff = srcbuffs [ s ] ; strip = ( s * strips_per_sample ) + j ; bytes_read = TIFFReadEncodedStrip ( in , strip , buff , stripsize ) ; rows_this_strip = bytes_read / src_rowsize ; if ( bytes_read < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>strip<S2SV_blank>%lu<S2SV_blank>for<S2SV_blank>sample<S2SV_blank>%d\" , ( unsigned long ) strip , s + 1 ) ; result = 0 ; break ; } # ifdef DEVELMODE TIFFError ( \"\" , \"Strip<S2SV_blank>%2d,<S2SV_blank>read<S2SV_blank>%5d<S2SV_blank>bytes<S2SV_blank>for<S2SV_blank>%4d<S2SV_blank>scanlines,<S2SV_blank>shift<S2SV_blank>width<S2SV_blank>%d\" , strip , bytes_read , rows_this_strip , shift_width ) ; # endif } if ( rps > rows_this_strip ) rps = rows_this_strip ; dst = obuf + ( dst_rowsize * rows_processed ) ; if ( ( bps % 8 ) == 0 ) { if ( combineSeparateSamplesBytes ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } } else { switch ( shift_width ) { case 1 : if ( combineSeparateSamples8bits ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } break ; case 2 : if ( combineSeparateSamples16bits ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } break ; case 3 : if ( combineSeparateSamples24bits ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } break ; case 4 : case 5 : case 6 : case 7 : case 8 : if ( combineSeparateSamples32bits ( srcbuffs , dst , width , rps , spp , bps , dump -> infile , dump -> format , dump -> level ) ) { result = 0 ; break ; } break ; default : TIFFError ( \"readSeparateStripsIntoBuffer\" , \"Unsupported<S2SV_blank>bit<S2SV_blank>depth:<S2SV_blank>%d\" , bps ) ; result = 0 ; break ; } } if ( ( rows_processed + rps ) > length ) { rows_processed = length ; rps = length - rows_processed ; } else rows_processed += rps ; } for ( s = 0 ; ( s < spp ) && ( s < MAX_SAMPLES ) ; s ++ ) { buff = srcbuffs [ s ] ; if ( buff != NULL ) _TIFFfree ( buff ) ; } return ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i , bytes_per_sample , bytes_per_pixel , shift_width , result = 1 ; uint32 j <S2SV_ModEnd> ; int32 bytes_read <S2SV_ModStart> uint16 bps , planar ; uint32 nstrips ; uint32 <S2SV_ModEnd> strips_per_sample ; uint32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jas_matrix_t * jas_matrix_copy ( jas_matrix_t * x ) { jas_matrix_t * y ; <S2SV_StartBug> int i ; <S2SV_EndBug> int j ; y = jas_matrix_create ( x -> numrows_ , x -> numcols_ ) ; for ( i = 0 ; i < x -> numrows_ ; ++ i ) { for ( j = 0 ; j < x -> numcols_ ; ++ j ) { * jas_matrix_getref ( y , i , j ) = jas_matrix_get ( x , i , j ) ; } } return y ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * y ; jas_matind_t i ; jas_matind_t <S2SV_ModEnd> j ; y\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0207\n\n```\nCWE-119 private int cdf_file_property_info ( struct magic_set * ms , const cdf_property_info_t * info , <S2SV_StartBug> size_t count , const uint64_t clsid [ 2 ] ) <S2SV_EndBug> { size_t i ; cdf_timestamp_t tp ; struct timespec ts ; char buf [ 64 ] ; const char * str = NULL ; const char * s ; int len ; <S2SV_StartBug> if ( ! NOTMIME ( ms ) ) <S2SV_EndBug> <S2SV_StartBug> str = cdf_clsid_to_mime ( clsid , clsid2mime ) ; <S2SV_EndBug> for ( i = 0 ; i < count ; i ++ ) { cdf_print_property_name ( buf , sizeof ( buf ) , info [ i ] . pi_id ) ; switch ( info [ i ] . pi_type ) { case CDF_NULL : break ; case CDF_SIGNED16 : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%hd\" , buf , info [ i ] . pi_s16 ) == - 1 ) return - 1 ; break ; case CDF_SIGNED32 : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%d\" , buf , info [ i ] . pi_s32 ) == - 1 ) return - 1 ; break ; case CDF_UNSIGNED32 : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%u\" , buf , info [ i ] . pi_u32 ) == - 1 ) return - 1 ; break ; case CDF_FLOAT : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%g\" , buf , info [ i ] . pi_f ) == - 1 ) return - 1 ; break ; case CDF_DOUBLE : if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%g\" , buf , info [ i ] . pi_d ) == - 1 ) return - 1 ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : len = info [ i ] . pi_str . s_len ; if ( len > 1 ) { char vbuf [ 1024 ] ; size_t j , k = 1 ; if ( info [ i ] . pi_type == CDF_LENGTH32_WSTRING ) k ++ ; s = info [ i ] . pi_str . s_buf ; for ( j = 0 ; j < sizeof ( vbuf ) && len -- ; j ++ , s += k ) { if ( * s == '\\\\0' ) break ; if ( isprint ( ( unsigned char ) * s ) ) vbuf [ j ] = * s ; } if ( j == sizeof ( vbuf ) ) -- j ; vbuf [ j ] = '\\\\0' ; if ( NOTMIME ( ms ) ) { if ( vbuf [ 0 ] ) { if ( file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%s\" , buf , vbuf ) == - 1 ) return - 1 ; } } else if ( str == NULL && info [ i ] . pi_id == CDF_PROPERTY_NAME_OF_APPLICATION ) { str = cdf_app_to_mime ( vbuf , app2mime ) ; } } break ; case CDF_FILETIME : tp = info [ i ] . pi_tp ; if ( tp != 0 ) { char tbuf [ 64 ] ; if ( tp < 1000000000000000LL ) { cdf_print_elapsed_time ( tbuf , sizeof ( tbuf ) , tp ) ; if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%s\" , buf , tbuf ) == - 1 ) return - 1 ; } else { char * c , * ec ; cdf_timestamp_to_timespec ( & ts , tp ) ; c = cdf_ctime ( & ts . tv_sec , tbuf ) ; if ( c != NULL && ( ec = strchr ( c , '\\\\n' ) ) != NULL ) * ec = '\\\\0' ; if ( NOTMIME ( ms ) && file_printf ( ms , \",<S2SV_blank>%s:<S2SV_blank>%s\" , buf , c ) == - 1 ) return - 1 ; } } break ; case CDF_CLIPBOARD : break ; default : return - 1 ; } } if ( ! NOTMIME ( ms ) ) { if ( str == NULL ) return 0 ; if ( file_printf ( ms , \"application/%s\" , str ) == - 1 ) return - 1 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count , const cdf_directory_t * root_storage <S2SV_ModEnd> ) { size_t <S2SV_ModStart> ( ms ) && root_storage <S2SV_ModStart> = cdf_clsid_to_mime ( root_storage -> d_storage_uuid <S2SV_ModEnd> , clsid2mime )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4301\n\n```\nCWE-119 static int parse_device ( dev_t * pdev , struct archive * a , char * val ) { # define MAX_PACK_ARGS 3 unsigned long numbers [ MAX_PACK_ARGS ] ; char * p , * dev ; int argc ; pack_t * pack ; dev_t result ; const char * error = NULL ; memset ( pdev , 0 , sizeof ( * pdev ) ) ; if ( ( dev = strchr ( val , ',' ) ) != NULL ) { * dev ++ = '\\\\0' ; if ( ( pack = pack_find ( val ) ) == NULL ) { archive_set_error ( a , ARCHIVE_ERRNO_FILE_FORMAT , \"Unknown<S2SV_blank>format<S2SV_blank>`%s\\'\" , val ) ; return ARCHIVE_WARN ; } argc = 0 ; while ( ( p = la_strsep ( & dev , \",\" ) ) != NULL ) { if ( * p == '\\\\0' ) { archive_set_error ( a , ARCHIVE_ERRNO_FILE_FORMAT , \"Missing<S2SV_blank>number\" ) ; return ARCHIVE_WARN ; } <S2SV_StartBug> numbers [ argc ++ ] = ( unsigned long ) mtree_atol ( & p ) ; <S2SV_EndBug> <S2SV_StartBug> if ( argc > MAX_PACK_ARGS ) { <S2SV_EndBug> archive_set_error ( a , ARCHIVE_ERRNO_FILE_FORMAT , \"Too<S2SV_blank>many<S2SV_blank>arguments\" ) ; return ARCHIVE_WARN ; } } if ( argc < 2 ) { archive_set_error ( a , ARCHIVE_ERRNO_FILE_FORMAT , \"Not<S2SV_blank>enough<S2SV_blank>arguments\" ) ; return ARCHIVE_WARN ; } result = ( * pack ) ( argc , numbers , & error ) ; if ( error != NULL ) { archive_set_error ( a , ARCHIVE_ERRNO_FILE_FORMAT , \"%s\" , error ) ; return ARCHIVE_WARN ; } } else { result = ( dev_t ) mtree_atol ( & val ) ; } * pdev = result ; return ARCHIVE_OK ; # undef MAX_PACK_ARGS }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ARCHIVE_WARN ; } if ( argc >= MAX_PACK_ARGS ) { archive_set_error ( a , ARCHIVE_ERRNO_FILE_FORMAT , \"Too<S2SV_blank>many<S2SV_blank>arguments\" ) ; return ARCHIVE_WARN ; } <S2SV_ModStart> p ) ; <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; <S2SV_StartBug> u64 insn_bitness = ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) ? 64 : 32 ; <S2SV_EndBug> if ( insn_bitness == 32 ) { coerce_reg_to_size ( dst_reg , 4 ) ; coerce_reg_to_size ( & src_reg , 4 ) ; } smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; if ( ( src_known && ( smin_val != smax_val || umin_val != umax_val ) ) || smin_val > smax_val || umin_val > umax_val ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } if ( ! src_known && opcode != BPF_ADD && opcode != BPF_SUB && opcode != BPF_AND ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } switch ( opcode ) { case BPF_ADD : <S2SV_StartBug> if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || <S2SV_EndBug> signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : <S2SV_StartBug> if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || <S2SV_EndBug> signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_ARSH : if ( umax_val >= insn_bitness ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value >>= umin_val ; dst_reg -> smax_value >>= umin_val ; dst_reg -> var_off = tnum_arshift ( dst_reg -> var_off , umin_val ) ; dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { coerce_reg_to_size ( dst_reg , 4 ) ; } __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 64 : 32 ; u32 dst = insn -> dst_reg ; int ret <S2SV_ModStart> case BPF_ADD : ret = sanitize_val_alu ( env , insn ) ; if ( ret < 0 ) { verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>add<S2SV_blank>from<S2SV_blank>different<S2SV_blank>pointers<S2SV_blank>or<S2SV_blank>scalars\\\\n\" , dst ) ; return ret ; } <S2SV_ModStart> case BPF_SUB : ret = sanitize_val_alu ( env , insn ) ; if ( ret < 0 ) { verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>sub<S2SV_blank>from<S2SV_blank>different<S2SV_blank>pointers<S2SV_blank>or<S2SV_blank>scalars\\\\n\" , dst ) ; return ret ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * chpass_principal3_2_svc ( chpass3_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( cmp_gss_krb5_name ( handle , rqst2name ( rqstp ) , arg -> princ ) ) { ret . code = chpass_principal_wrapper_3 ( ( void * ) handle , arg -> princ , arg -> keepold , arg -> n_ks_tuple , arg -> ks_tuple , arg -> pass ) ; } else if ( ! ( CHANGEPW_SERVICE ( rqstp ) ) && kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_CHANGEPW , arg -> princ , NULL ) ) { ret . code = kadm5_chpass_principal_3 ( ( void * ) handle , arg -> princ , arg -> keepold , arg -> n_ks_tuple , arg -> ks_tuple , arg -> pass ) ; } else { log_unauth ( \"kadm5_chpass_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_CHANGEPW ; } if ( ret . code != KADM5_AUTH_CHANGEPW ) { if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_chpass_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2765\n\n```\nCWE-476 static apr_status_t modsecurity_request_body_store_memory ( modsec_rec * msr , const char * data , apr_size_t length , char * * error_msg ) { * error_msg = NULL ; <S2SV_StartBug> if ( ( msr -> msc_reqbody_spilltodisk ) <S2SV_EndBug> && ( msr -> msc_reqbody_length + length > ( apr_size_t ) msr -> txcfg -> reqbody_inmemory_limit ) ) { msc_data_chunk * * chunks ; unsigned int disklen = 0 ; int i ; msr_log ( msr , 4 , \"Input<S2SV_blank>filter:<S2SV_blank>Request<S2SV_blank>too<S2SV_blank>large<S2SV_blank>to<S2SV_blank>store<S2SV_blank>in<S2SV_blank>memory,<S2SV_blank>switching<S2SV_blank>to<S2SV_blank>disk.\" ) ; msr -> msc_reqbody_storage = MSC_REQBODY_DISK ; if ( modsecurity_request_body_start_init ( msr , error_msg ) < 0 ) return - 1 ; chunks = ( msc_data_chunk * * ) msr -> msc_reqbody_chunks -> elts ; for ( i = 0 ; i < msr -> msc_reqbody_chunks -> nelts ; i ++ ) { disklen += chunks [ i ] -> length ; if ( modsecurity_request_body_store_disk ( msr , chunks [ i ] -> data , chunks [ i ] -> length , error_msg ) < 0 ) { return - 1 ; } free ( chunks [ i ] -> data ) ; chunks [ i ] -> data = NULL ; } msr -> msc_reqbody_chunks = NULL ; apr_pool_clear ( msr -> msc_reqbody_mp ) ; msr_log ( msr , 4 , \"Input<S2SV_blank>filter:<S2SV_blank>Wrote<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>from<S2SV_blank>memory<S2SV_blank>to<S2SV_blank>disk.\" , disklen ) ; return modsecurity_request_body_store_disk ( msr , data , length , error_msg ) ; } { unsigned long int bucket_offset , bucket_left ; bucket_offset = 0 ; bucket_left = length ; while ( bucket_left > 0 ) { if ( msr -> msc_reqbody_chunk_current == NULL ) { msr -> msc_reqbody_chunk_current = ( msc_data_chunk * ) apr_pcalloc ( msr -> msc_reqbody_mp , sizeof ( msc_data_chunk ) ) ; if ( msr -> msc_reqbody_chunk_current == NULL ) { * error_msg = apr_psprintf ( msr -> mp , \"Input<S2SV_blank>filter:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>\" \"for<S2SV_blank>request<S2SV_blank>body<S2SV_blank>chunk.\" , ( unsigned long ) sizeof ( msc_data_chunk ) ) ; return - 1 ; } msr -> msc_reqbody_chunk_current -> data = malloc ( CHUNK_CAPACITY ) ; if ( msr -> msc_reqbody_chunk_current -> data == NULL ) { * error_msg = apr_psprintf ( msr -> mp , \"Input<S2SV_blank>filter:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>\" \"for<S2SV_blank>request<S2SV_blank>body<S2SV_blank>chunk<S2SV_blank>data.\" , CHUNK_CAPACITY ) ; return - 1 ; } msr -> msc_reqbody_chunk_current -> length = 0 ; msr -> msc_reqbody_chunk_current -> is_permanent = 1 ; * ( const msc_data_chunk * * ) apr_array_push ( msr -> msc_reqbody_chunks ) = msr -> msc_reqbody_chunk_current ; } if ( bucket_left < ( CHUNK_CAPACITY - msr -> msc_reqbody_chunk_current -> length ) ) { memcpy ( msr -> msc_reqbody_chunk_current -> data + msr -> msc_reqbody_chunk_current -> length , data + bucket_offset , bucket_left ) ; msr -> msc_reqbody_chunk_current -> length += bucket_left ; bucket_left = 0 ; } else { unsigned long int copy_length = CHUNK_CAPACITY - msr -> msc_reqbody_chunk_current -> length ; memcpy ( msr -> msc_reqbody_chunk_current -> data + msr -> msc_reqbody_chunk_current -> length , data + bucket_offset , copy_length ) ; bucket_offset += copy_length ; bucket_left -= copy_length ; msr -> msc_reqbody_chunk_current -> length += copy_length ; msr -> msc_reqbody_chunk_current = NULL ; } } msr -> msc_reqbody_length += length ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> msr -> msc_reqbody_spilltodisk ) && ( msr -> txcfg -> reqbody_buffering != REQUEST_BODY_FORCEBUF_ON\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0206\n\n```\nCWE-119 int dtls1_read_bytes ( SSL * s , int type , unsigned char * buf , int len , int peek ) { int al , i , j , ret ; unsigned int n ; SSL3_RECORD * rr ; void ( * cb ) ( const SSL * ssl , int type2 , int val ) = NULL ; if ( s -> s3 -> rbuf . buf == NULL ) if ( ! ssl3_setup_buffers ( s ) ) return ( - 1 ) ; if ( ( type && ( type != SSL3_RT_APPLICATION_DATA ) && ( type != SSL3_RT_HANDSHAKE ) ) || ( peek && ( type != SSL3_RT_APPLICATION_DATA ) ) ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } if ( ( ret = have_handshake_fragment ( s , type , buf , len , peek ) ) ) return ret ; # ifndef OPENSSL_NO_SCTP if ( ( ! s -> in_handshake && SSL_in_init ( s ) ) || ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && ( s -> state == DTLS1_SCTP_ST_SR_READ_SOCK || s -> state == DTLS1_SCTP_ST_CR_READ_SOCK ) && s -> s3 -> in_read_app_data != 2 ) ) # else if ( ! s -> in_handshake && SSL_in_init ( s ) ) # endif { i = s -> handshake_func ( s ) ; if ( i < 0 ) return ( i ) ; if ( i == 0 ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_SSL_HANDSHAKE_FAILURE ) ; return ( - 1 ) ; } } start : s -> rwstate = SSL_NOTHING ; rr = & ( s -> s3 -> rrec ) ; if ( s -> state == SSL_ST_OK && rr -> length == 0 ) { pitem * item ; item = pqueue_pop ( s -> d1 -> buffered_app_data . q ) ; if ( item ) { # ifndef OPENSSL_NO_SCTP if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) ) { DTLS1_RECORD_DATA * rdata = ( DTLS1_RECORD_DATA * ) item -> data ; BIO_ctrl ( SSL_get_rbio ( s ) , BIO_CTRL_DGRAM_SCTP_SET_RCVINFO , sizeof ( rdata -> recordinfo ) , & rdata -> recordinfo ) ; } # endif dtls1_copy_record ( s , item ) ; OPENSSL_free ( item -> data ) ; pitem_free ( item ) ; } } if ( dtls1_handle_timeout ( s ) > 0 ) goto start ; if ( ( rr -> length == 0 ) || ( s -> rstate == SSL_ST_READ_BODY ) ) { ret = dtls1_get_record ( s ) ; if ( ret <= 0 ) { ret = dtls1_read_failed ( s , ret ) ; if ( ret <= 0 ) return ( ret ) ; else goto start ; } } if ( s -> d1 -> listen && rr -> type != SSL3_RT_HANDSHAKE ) { rr -> length = 0 ; goto start ; } if ( s -> s3 -> change_cipher_spec && ( rr -> type != SSL3_RT_HANDSHAKE ) ) { <S2SV_StartBug> dtls1_buffer_record ( s , & ( s -> d1 -> buffered_app_data ) , rr -> seq_num ) ; <S2SV_EndBug> rr -> length = 0 ; goto start ; } if ( s -> shutdown & SSL_RECEIVED_SHUTDOWN ) { rr -> length = 0 ; s -> rwstate = SSL_NOTHING ; return ( 0 ) ; } if ( type == rr -> type ) { if ( SSL_in_init ( s ) && ( type == SSL3_RT_APPLICATION_DATA ) && ( s -> enc_read_ctx == NULL ) ) { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_APP_DATA_IN_HANDSHAKE ) ; goto f_err ; } if ( len <= 0 ) return ( len ) ; if ( ( unsigned int ) len > rr -> length ) n = rr -> length ; else n = ( unsigned int ) len ; memcpy ( buf , & ( rr -> data [ rr -> off ] ) , n ) ; if ( ! peek ) { rr -> length -= n ; rr -> off += n ; if ( rr -> length == 0 ) { s -> rstate = SSL_ST_READ_HEADER ; rr -> off = 0 ; } } # ifndef OPENSSL_NO_SCTP if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && rr -> type == SSL3_RT_APPLICATION_DATA && ( s -> state == DTLS1_SCTP_ST_SR_READ_SOCK || s -> state == DTLS1_SCTP_ST_CR_READ_SOCK ) ) { s -> rwstate = SSL_READING ; BIO_clear_retry_flags ( SSL_get_rbio ( s ) ) ; BIO_set_retry_read ( SSL_get_rbio ( s ) ) ; } if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && s -> d1 -> shutdown_received && ! BIO_dgram_sctp_msg_waiting ( SSL_get_rbio ( s ) ) ) { s -> shutdown |= SSL_RECEIVED_SHUTDOWN ; return ( 0 ) ; } # endif return ( n ) ; } { unsigned int k , dest_maxlen = 0 ; unsigned char * dest = NULL ; unsigned int * dest_len = NULL ; if ( rr -> type == SSL3_RT_HANDSHAKE ) { dest_maxlen = sizeof s -> d1 -> handshake_fragment ; dest = s -> d1 -> handshake_fragment ; dest_len = & s -> d1 -> handshake_fragment_len ; } else if ( rr -> type == SSL3_RT_ALERT ) { dest_maxlen = sizeof ( s -> d1 -> alert_fragment ) ; dest = s -> d1 -> alert_fragment ; dest_len = & s -> d1 -> alert_fragment_len ; } # ifndef OPENSSL_NO_HEARTBEATS else if ( rr -> type == TLS1_RT_HEARTBEAT ) { dtls1_process_heartbeat ( s ) ; rr -> length = 0 ; s -> rwstate = SSL_READING ; BIO_clear_retry_flags ( SSL_get_rbio ( s ) ) ; BIO_set_retry_read ( SSL_get_rbio ( s ) ) ; return ( - 1 ) ; } # endif else if ( rr -> type != SSL3_RT_CHANGE_CIPHER_SPEC ) { if ( rr -> type == SSL3_RT_APPLICATION_DATA ) { BIO * bio ; s -> s3 -> in_read_app_data = 2 ; bio = SSL_get_rbio ( s ) ; s -> rwstate = SSL_READING ; BIO_clear_retry_flags ( bio ) ; BIO_set_retry_read ( bio ) ; return ( - 1 ) ; } al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_UNEXPECTED_RECORD ) ; goto f_err ; } if ( dest_maxlen > 0 ) { if ( rr -> length < dest_maxlen ) { # ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE FIX ME # endif s -> rstate = SSL_ST_READ_HEADER ; rr -> length = 0 ; goto start ; } for ( k = 0 ; k < dest_maxlen ; k ++ ) { dest [ k ] = rr -> data [ rr -> off ++ ] ; rr -> length -- ; } * dest_len = dest_maxlen ; } } if ( ( ! s -> server ) && ( s -> d1 -> handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH ) && ( s -> d1 -> handshake_fragment [ 0 ] == SSL3_MT_HELLO_REQUEST ) && ( s -> session != NULL ) && ( s -> session -> cipher != NULL ) ) { s -> d1 -> handshake_fragment_len = 0 ; if ( ( s -> d1 -> handshake_fragment [ 1 ] != 0 ) || ( s -> d1 -> handshake_fragment [ 2 ] != 0 ) || ( s -> d1 -> handshake_fragment [ 3 ] != 0 ) ) { al = SSL_AD_DECODE_ERROR ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_BAD_HELLO_REQUEST ) ; goto err ; } if ( s -> msg_callback ) s -> msg_callback ( 0 , s -> version , SSL3_RT_HANDSHAKE , s -> d1 -> handshake_fragment , 4 , s , s -> msg_callback_arg ) ; if ( SSL_is_init_finished ( s ) && ! ( s -> s3 -> flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS ) && ! s -> s3 -> renegotiate ) { s -> d1 -> handshake_read_seq ++ ; s -> new_session = 1 ; ssl3_renegotiate ( s ) ; if ( ssl3_renegotiate_check ( s ) ) { i = s -> handshake_func ( s ) ; if ( i < 0 ) return ( i ) ; if ( i == 0 ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_SSL_HANDSHAKE_FAILURE ) ; return ( - 1 ) ; } if ( ! ( s -> mode & SSL_MODE_AUTO_RETRY ) ) { if ( s -> s3 -> rbuf . left == 0 ) { BIO * bio ; s -> rwstate = SSL_READING ; bio = SSL_get_rbio ( s ) ; BIO_clear_retry_flags ( bio ) ; BIO_set_retry_read ( bio ) ; return ( - 1 ) ; } } } } goto start ; } if ( s -> d1 -> alert_fragment_len >= DTLS1_AL_HEADER_LENGTH ) { int alert_level = s -> d1 -> alert_fragment [ 0 ] ; int alert_descr = s -> d1 -> alert_fragment [ 1 ] ; s -> d1 -> alert_fragment_len = 0 ; if ( s -> msg_callback ) s -> msg_callback ( 0 , s -> version , SSL3_RT_ALERT , s -> d1 -> alert_fragment , 2 , s , s -> msg_callback_arg ) ; if ( s -> info_callback != NULL ) cb = s -> info_callback ; else if ( s -> ctx -> info_callback != NULL ) cb = s -> ctx -> info_callback ; if ( cb != NULL ) { j = ( alert_level << 8 ) | alert_descr ; cb ( s , SSL_CB_READ_ALERT , j ) ; } if ( alert_level == 1 ) { s -> s3 -> warn_alert = alert_descr ; if ( alert_descr == SSL_AD_CLOSE_NOTIFY ) { # ifndef OPENSSL_NO_SCTP if ( BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) && BIO_dgram_sctp_msg_waiting ( SSL_get_rbio ( s ) ) ) { s -> d1 -> shutdown_received = 1 ; s -> rwstate = SSL_READING ; BIO_clear_retry_flags ( SSL_get_rbio ( s ) ) ; BIO_set_retry_read ( SSL_get_rbio ( s ) ) ; return - 1 ; } # endif s -> shutdown |= SSL_RECEIVED_SHUTDOWN ; return ( 0 ) ; } # if 0 if ( alert_descr == DTLS1_AD_MISSING_HANDSHAKE_MESSAGE ) { unsigned short seq ; unsigned int frag_off ; unsigned char * p = & ( s -> d1 -> alert_fragment [ 2 ] ) ; n2s ( p , seq ) ; n2l3 ( p , frag_off ) ; dtls1_retransmit_message ( s , dtls1_get_queue_priority ( frag -> msg_header . seq , 0 ) , frag_off , & found ) ; if ( ! found && SSL_in_init ( s ) ) { ssl3_send_alert ( s , SSL3_AL_WARNING , DTLS1_AD_MISSING_HANDSHAKE_MESSAGE ) ; } } # endif } else if ( alert_level == 2 ) { char tmp [ 16 ] ; s -> rwstate = SSL_NOTHING ; s -> s3 -> fatal_alert = alert_descr ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_AD_REASON_OFFSET + alert_descr ) ; BIO_snprintf ( tmp , sizeof tmp , \"%d\" , alert_descr ) ; ERR_add_error_data ( 2 , \"SSL<S2SV_blank>alert<S2SV_blank>number<S2SV_blank>\" , tmp ) ; s -> shutdown |= SSL_RECEIVED_SHUTDOWN ; SSL_CTX_remove_session ( s -> ctx , s -> session ) ; return ( 0 ) ; } else { al = SSL_AD_ILLEGAL_PARAMETER ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_UNKNOWN_ALERT_TYPE ) ; goto f_err ; } goto start ; } if ( s -> shutdown & SSL_SENT_SHUTDOWN ) { s -> rwstate = SSL_NOTHING ; rr -> length = 0 ; return ( 0 ) ; } if ( rr -> type == SSL3_RT_CHANGE_CIPHER_SPEC ) { struct ccs_header_st ccs_hdr ; unsigned int ccs_hdr_len = DTLS1_CCS_HEADER_LENGTH ; dtls1_get_ccs_header ( rr -> data , & ccs_hdr ) ; if ( s -> version == DTLS1_BAD_VER ) ccs_hdr_len = 3 ; if ( ( rr -> length != ccs_hdr_len ) || ( rr -> off != 0 ) || ( rr -> data [ 0 ] != SSL3_MT_CCS ) ) { i = SSL_AD_ILLEGAL_PARAMETER ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_BAD_CHANGE_CIPHER_SPEC ) ; goto err ; } rr -> length = 0 ; if ( s -> msg_callback ) s -> msg_callback ( 0 , s -> version , SSL3_RT_CHANGE_CIPHER_SPEC , rr -> data , 1 , s , s -> msg_callback_arg ) ; if ( ! s -> d1 -> change_cipher_spec_ok ) { goto start ; } s -> d1 -> change_cipher_spec_ok = 0 ; s -> s3 -> change_cipher_spec = 1 ; if ( ! ssl3_do_change_cipher_spec ( s ) ) goto err ; dtls1_reset_seq_numbers ( s , SSL3_CC_READ ) ; if ( s -> version == DTLS1_BAD_VER ) s -> d1 -> handshake_read_seq ++ ; # ifndef OPENSSL_NO_SCTP BIO_ctrl ( SSL_get_wbio ( s ) , BIO_CTRL_DGRAM_SCTP_AUTH_CCS_RCVD , 1 , NULL ) ; # endif goto start ; } if ( ( s -> d1 -> handshake_fragment_len >= DTLS1_HM_HEADER_LENGTH ) && ! s -> in_handshake ) { struct hm_header_st msg_hdr ; dtls1_get_message_header ( rr -> data , & msg_hdr ) ; if ( rr -> epoch != s -> d1 -> r_epoch ) { rr -> length = 0 ; goto start ; } if ( msg_hdr . type == SSL3_MT_FINISHED ) { if ( dtls1_check_timeout_num ( s ) < 0 ) return - 1 ; dtls1_retransmit_buffered_messages ( s ) ; rr -> length = 0 ; goto start ; } if ( ( ( s -> state & SSL_ST_MASK ) == SSL_ST_OK ) && ! ( s -> s3 -> flags & SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS ) ) { # if 0 s -> state = SSL_ST_BEFORE | ( s -> server ) ? SSL_ST_ACCEPT : SSL_ST_CONNECT ; # else s -> state = s -> server ? SSL_ST_ACCEPT : SSL_ST_CONNECT ; # endif s -> renegotiate = 1 ; s -> new_session = 1 ; } i = s -> handshake_func ( s ) ; if ( i < 0 ) return ( i ) ; if ( i == 0 ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_SSL_HANDSHAKE_FAILURE ) ; return ( - 1 ) ; } if ( ! ( s -> mode & SSL_MODE_AUTO_RETRY ) ) { if ( s -> s3 -> rbuf . left == 0 ) { BIO * bio ; s -> rwstate = SSL_READING ; bio = SSL_get_rbio ( s ) ; BIO_clear_retry_flags ( bio ) ; BIO_set_retry_read ( bio ) ; return ( - 1 ) ; } } goto start ; } switch ( rr -> type ) { default : # ifndef OPENSSL_NO_TLS if ( s -> version == TLS1_VERSION ) { rr -> length = 0 ; goto start ; } # endif al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_UNEXPECTED_RECORD ) ; goto f_err ; case SSL3_RT_CHANGE_CIPHER_SPEC : case SSL3_RT_ALERT : case SSL3_RT_HANDSHAKE : al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , ERR_R_INTERNAL_ERROR ) ; goto f_err ; case SSL3_RT_APPLICATION_DATA : if ( s -> s3 -> in_read_app_data && ( s -> s3 -> total_renegotiations != 0 ) && ( ( ( s -> state & SSL_ST_CONNECT ) && ( s -> state >= SSL3_ST_CW_CLNT_HELLO_A ) && ( s -> state <= SSL3_ST_CR_SRVR_HELLO_A ) ) || ( ( s -> state & SSL_ST_ACCEPT ) && ( s -> state <= SSL3_ST_SW_HELLO_REQ_A ) && ( s -> state >= SSL3_ST_SR_CLNT_HELLO_A ) ) ) ) { s -> s3 -> in_read_app_data = 2 ; return ( - 1 ) ; } else { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_DTLS1_READ_BYTES , SSL_R_UNEXPECTED_RECORD ) ; goto f_err ; } } f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( <S2SV_ModStart> -> seq_num ) < 0 ) { SSLerr ( SSL_F_DTLS1_READ_BYTES , ERR_R_INTERNAL_ERROR ) ; return - 1 ; } <S2SV_ModEnd> rr -> length\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 void options_defaults ( ) { SERVICE_OPTIONS * service ; memset ( & new_global_options , 0 , sizeof ( GLOBAL_OPTIONS ) ) ; memset ( & new_service_options , 0 , sizeof ( SERVICE_OPTIONS ) ) ; new_service_options . next = NULL ; <S2SV_StartBug> parse_global_option ( CMD_SET_DEFAULTS , NULL , NULL ) ; <S2SV_EndBug> service = & new_service_options ; parse_service_option ( CMD_SET_DEFAULTS , & service , NULL , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( CMD_SET_DEFAULTS , & new_global_options ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 static bool caller_is_in_ancestor ( pid_t pid , const char * contrl , const char * cg , char * * nextcg ) { <S2SV_StartBug> char fnam [ PROCLEN ] ; <S2SV_EndBug> FILE * f ; bool answer = false ; <S2SV_StartBug> char * line = NULL ; <S2SV_EndBug> size_t len = 0 ; int ret ; ret = snprintf ( fnam , PROCLEN , \"/proc/%d/cgroup\" , pid ) ; if ( ret < 0 || ret >= PROCLEN ) return false ; if ( ! ( f = fopen ( fnam , \"r\" ) ) ) return false ; while ( getline ( & line , & len , f ) != - 1 ) { char * c1 , * c2 , * linecmp ; if ( ! line [ 0 ] ) continue ; c1 = strchr ( line , ':' ) ; if ( ! c1 ) goto out ; c1 ++ ; c2 = strchr ( c1 , ':' ) ; if ( ! c2 ) <S2SV_StartBug> goto out ; <S2SV_EndBug> * c2 = '\\\\0' ; if ( strcmp ( c1 , contrl ) != 0 ) continue ; c2 ++ ; stripnewline ( c2 ) ; prune_init_slice ( c2 ) ; linecmp = * cg == '/' ? c2 : c2 + 1 ; if ( strncmp ( linecmp , cg , strlen ( linecmp ) ) != 0 ) { <S2SV_StartBug> if ( nextcg ) <S2SV_EndBug> * nextcg = get_next_cgroup_dir ( linecmp , cg ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } answer = true ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } out : fclose ( f ) ; free ( line ) ; return answer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nextcg ) { <S2SV_ModEnd> bool answer = <S2SV_ModStart> ; char * c2 = get_pid_cgroup ( pid , contrl ) ; char * linecmp <S2SV_ModEnd> ; if ( <S2SV_ModStart> ! c2 ) return false <S2SV_ModEnd> ; prune_init_slice ( <S2SV_ModStart> ( nextcg ) { <S2SV_ModStart> cg ) ; } <S2SV_ModStart> = true ; out : free ( c2 <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10672\n\n```\nCWE-20 int treeRead ( struct READER * reader , struct DATAOBJECT * data ) { int i , j , err , olen , elements , size , x , y , z , b , e , dy , dz , sx , sy , sz , dzy , szy ; char * input , * output ; uint8_t node_type , node_level ; uint16_t entries_used ; uint32_t size_of_chunk ; uint32_t filter_mask ; uint64_t address_of_left_sibling , address_of_right_sibling , start [ 4 ] , child_pointer , key , store ; char buf [ 4 ] ; UNUSED ( node_level ) ; UNUSED ( address_of_right_sibling ) ; UNUSED ( address_of_left_sibling ) ; UNUSED ( key ) ; if ( data -> ds . dimensionality > 3 ) { log ( \"TREE<S2SV_blank>dimensions<S2SV_blank>><S2SV_blank>3\" ) ; return MYSOFA_INVALID_FORMAT ; } if ( fread ( buf , 1 , 4 , reader -> fhd ) != 4 || strncmp ( buf , \"TREE\" , 4 ) ) { log ( \"cannot<S2SV_blank>read<S2SV_blank>signature<S2SV_blank>of<S2SV_blank>TREE\\\\n\" ) ; return MYSOFA_INVALID_FORMAT ; } log ( \"%08lX<S2SV_blank>%.4s\\\\n\" , ( uint64_t ) ftell ( reader -> fhd ) - 4 , buf ) ; node_type = ( uint8_t ) fgetc ( reader -> fhd ) ; node_level = ( uint8_t ) fgetc ( reader -> fhd ) ; entries_used = ( uint16_t ) readValue ( reader , 2 ) ; if ( entries_used > 0x1000 ) return MYSOFA_UNSUPPORTED_FORMAT ; address_of_left_sibling = readValue ( reader , reader -> superblock . size_of_offsets ) ; address_of_right_sibling = readValue ( reader , reader -> superblock . size_of_offsets ) ; elements = 1 ; for ( j = 0 ; j < data -> ds . dimensionality ; j ++ ) elements *= data -> datalayout_chunk [ j ] ; dy = data -> datalayout_chunk [ 1 ] ; dz = data -> datalayout_chunk [ 2 ] ; sx = data -> ds . dimension_size [ 0 ] ; sy = data -> ds . dimension_size [ 1 ] ; sz = data -> ds . dimension_size [ 2 ] ; dzy = dz * dy ; szy = sz * sy ; size = data -> datalayout_chunk [ data -> ds . dimensionality ] ; log ( \"elements<S2SV_blank>%d<S2SV_blank>size<S2SV_blank>%d\\\\n\" , elements , size ) ; if ( ! ( output = malloc ( elements * size ) ) ) { return MYSOFA_NO_MEMORY ; } for ( e = 0 ; e < entries_used * 2 ; e ++ ) { if ( node_type == 0 ) { key = readValue ( reader , reader -> superblock . size_of_lengths ) ; } else { size_of_chunk = ( uint32_t ) readValue ( reader , 4 ) ; filter_mask = ( uint32_t ) readValue ( reader , 4 ) ; if ( filter_mask ) { log ( \"TREE<S2SV_blank>all<S2SV_blank>filters<S2SV_blank>must<S2SV_blank>be<S2SV_blank>enabled\\\\n\" ) ; free ( output ) ; return MYSOFA_INVALID_FORMAT ; } for ( j = 0 ; j < data -> ds . dimensionality ; j ++ ) { start [ j ] = readValue ( reader , 8 ) ; log ( \"start<S2SV_blank>%d<S2SV_blank>%lu\\\\n\" , j , start [ j ] ) ; } if ( readValue ( reader , 8 ) ) { break ; } child_pointer = readValue ( reader , reader -> superblock . size_of_offsets ) ; log ( \"<S2SV_blank>data<S2SV_blank>at<S2SV_blank>%lX<S2SV_blank>len<S2SV_blank>%u\\\\n\" , child_pointer , size_of_chunk ) ; store = ftell ( reader -> fhd ) ; if ( fseek ( reader -> fhd , child_pointer , SEEK_SET ) < 0 ) { free ( output ) ; return errno ; } if ( ! ( input = malloc ( size_of_chunk ) ) ) { free ( output ) ; return MYSOFA_NO_MEMORY ; } if ( fread ( input , 1 , size_of_chunk , reader -> fhd ) != size_of_chunk ) { free ( output ) ; free ( input ) ; return MYSOFA_INVALID_FORMAT ; } olen = elements * size ; err = gunzip ( size_of_chunk , input , & olen , output ) ; free ( input ) ; log ( \"<S2SV_blank><S2SV_blank><S2SV_blank>gunzip<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , err , olen , elements * size ) ; if ( err || olen != elements * size ) { free ( output ) ; return MYSOFA_INVALID_FORMAT ; } switch ( data -> ds . dimensionality ) { case 1 : for ( i = 0 ; i < olen ; i ++ ) { b = i / elements ; x = i % elements + start [ 0 ] ; <S2SV_StartBug> if ( x < sx ) { <S2SV_EndBug> <S2SV_StartBug> j = x * size + b ; <S2SV_EndBug> ( ( char * ) data -> data ) [ j ] = output [ i ] ; } } break ; case 2 : for ( i = 0 ; i < olen ; i ++ ) { b = i / elements ; x = i % elements ; y = x % dy + start [ 1 ] ; x = x / dy + start [ 0 ] ; <S2SV_StartBug> if ( y < sy && x < sx ) { <S2SV_EndBug> <S2SV_StartBug> j = ( ( x * sy + y ) * size ) + b ; <S2SV_EndBug> ( ( char * ) data -> data ) [ j ] = output [ i ] ; } } break ; case 3 : for ( i = 0 ; i < olen ; i ++ ) { b = i / elements ; x = i % elements ; z = x % dz + start [ 2 ] ; y = ( x / dz ) % dy + start [ 1 ] ; x = ( x / dzy ) + start [ 0 ] ; <S2SV_StartBug> if ( z < sz && y < sy && x < sx ) { <S2SV_EndBug> j = ( x * szy + y * sz + z ) * size + b ; <S2SV_StartBug> ( ( char * ) data -> data ) [ j ] = output [ i ] ; <S2SV_EndBug> } } break ; default : log ( \"invalid<S2SV_blank>dim\\\\n\" ) ; return MYSOFA_INTERNAL_ERROR ; } if ( fseek ( reader -> fhd , store , SEEK_SET ) < 0 ) { free ( output ) ; return errno ; } } } free ( output ) ; if ( fseek ( reader -> fhd , 4 , SEEK_CUR ) < 0 ) return errno ; return MYSOFA_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ] ; <S2SV_ModEnd> j = x <S2SV_ModStart> + b ; if ( j >= 0 && j < elements * size ) { <S2SV_ModStart> 0 ] ; <S2SV_ModEnd> j = ( <S2SV_ModStart> + b ; if ( j >= 0 && j < elements * size ) { <S2SV_ModStart> 0 ] ; <S2SV_ModEnd> j = ( <S2SV_ModStart> + b ; if ( j >= 0 && j < elements * size ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-5208\n\n```\nCWE-120 int read_fru_area_section ( struct ipmi_intf * intf , struct fru_info * fru , uint8_t id , uint32_t offset , uint32_t length , uint8_t * frubuf ) { static uint32_t fru_data_rqst_size = 20 ; <S2SV_StartBug> uint32_t off = offset , tmp , finish ; <S2SV_EndBug> struct ipmi_rs * rsp ; struct ipmi_rq req ; uint8_t msg_data [ 4 ] ; if ( offset > fru -> size ) { lprintf ( LOG_ERR , \"Read<S2SV_blank>FRU<S2SV_blank>Area<S2SV_blank>offset<S2SV_blank>incorrect:<S2SV_blank>%d<S2SV_blank>><S2SV_blank>%d\" , offset , fru -> size ) ; return - 1 ; } finish = offset + length ; if ( finish > fru -> size ) { <S2SV_StartBug> finish = fru -> size ; <S2SV_EndBug> lprintf ( LOG_NOTICE , \"Read<S2SV_blank>FRU<S2SV_blank>Area<S2SV_blank>length<S2SV_blank>%d<S2SV_blank>too<S2SV_blank>large,<S2SV_blank>\" \"Adjusting<S2SV_blank>to<S2SV_blank>%d\" , <S2SV_StartBug> offset + length , finish - offset ) ; <S2SV_EndBug> } memset ( & req , 0 , sizeof ( req ) ) ; req . msg . netfn = IPMI_NETFN_STORAGE ; req . msg . cmd = GET_FRU_DATA ; req . msg . data = msg_data ; req . msg . data_len = 4 ; # ifdef LIMIT_ALL_REQUEST_SIZE if ( fru_data_rqst_size > 16 ) # else if ( fru -> access && fru_data_rqst_size > 16 ) # endif fru_data_rqst_size = 16 ; <S2SV_StartBug> do { <S2SV_EndBug> tmp = fru -> access ? off >> 1 : off ; msg_data [ 0 ] = id ; msg_data [ 1 ] = ( uint8_t ) ( tmp & 0xff ) ; msg_data [ 2 ] = ( uint8_t ) ( tmp >> 8 ) ; tmp = finish - off ; if ( tmp > fru_data_rqst_size ) msg_data [ 3 ] = ( uint8_t ) fru_data_rqst_size ; else msg_data [ 3 ] = ( uint8_t ) tmp ; rsp = intf -> sendrecv ( intf , & req ) ; if ( ! rsp ) { lprintf ( LOG_NOTICE , \"FRU<S2SV_blank>Read<S2SV_blank>failed\" ) ; break ; } if ( rsp -> ccode ) { if ( fru_cc_rq2big ( rsp -> ccode ) && ( -- fru_data_rqst_size > FRU_BLOCK_SZ ) ) { lprintf ( LOG_INFO , \"Retrying<S2SV_blank>FRU<S2SV_blank>read<S2SV_blank>with<S2SV_blank>request<S2SV_blank>size<S2SV_blank>%d\" , fru_data_rqst_size ) ; continue ; } lprintf ( LOG_NOTICE , \"FRU<S2SV_blank>Read<S2SV_blank>failed:<S2SV_blank>%s\" , val2str ( rsp -> ccode , completion_code_vals ) ) ; break ; } tmp = fru -> access ? rsp -> data [ 0 ] << 1 : rsp -> data [ 0 ] ; <S2SV_StartBug> memcpy ( ( frubuf + off ) - offset , rsp -> data + 1 , tmp ) ; <S2SV_EndBug> off += tmp ; <S2SV_StartBug> if ( tmp == 0 && off < finish ) <S2SV_EndBug> return 0 ; } while ( off < finish ) ; if ( off < finish ) return - 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> off = offset ; uint32_t tmp , finish ; uint32_t size_left_in_buffer <S2SV_ModEnd> ; struct ipmi_rs <S2SV_ModStart> size ) { memset ( frubuf + fru -> size , 0 , length - fru -> size ) ; <S2SV_ModStart> - offset ) ; length = finish - offset <S2SV_ModStart> = 16 ; size_left_in_buffer = length ; <S2SV_ModStart> 0 ] ; if ( rsp -> data_len < 1 || tmp > rsp -> data_len - 1 || tmp > size_left_in_buffer ) { printf ( \"<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>buffer<S2SV_blank>size\" ) ; return - 1 ; } <S2SV_ModStart> += tmp ; size_left_in_buffer -= tmp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14284\n\n```\nCWE-369 static int set_geometry ( unsigned int cmd , struct floppy_struct * g , int drive , int type , struct block_device * bdev ) { int cnt ; if ( g -> sect <= 0 || <S2SV_StartBug> g -> head <= 0 || <S2SV_EndBug> g -> track <= 0 || g -> track > UDP -> tracks >> STRETCH ( g ) || ( g -> stretch & ~ ( FD_STRETCH | FD_SWAPSIDES | FD_SECTBASEMASK ) ) != 0 ) return - EINVAL ; if ( type ) { if ( ! capable ( CAP_SYS_ADMIN ) ) return - EPERM ; mutex_lock ( & open_lock ) ; if ( lock_fdc ( drive ) ) { mutex_unlock ( & open_lock ) ; return - EINTR ; } floppy_type [ type ] = * g ; floppy_type [ type ] . name = \"user<S2SV_blank>format\" ; for ( cnt = type << 2 ; cnt < ( type << 2 ) + 4 ; cnt ++ ) floppy_sizes [ cnt ] = floppy_sizes [ cnt + 0x80 ] = floppy_type [ type ] . size + 1 ; process_fd_request ( ) ; for ( cnt = 0 ; cnt < N_DRIVE ; cnt ++ ) { struct block_device * bdev = opened_bdev [ cnt ] ; if ( ! bdev || ITYPE ( drive_state [ cnt ] . fd_device ) != type ) continue ; __invalidate_device ( bdev , true ) ; } mutex_unlock ( & open_lock ) ; } else { int oldStretch ; if ( lock_fdc ( drive ) ) return - EINTR ; if ( cmd != FDDEFPRM ) { if ( poll_drive ( true , FD_RAW_NEED_DISK ) == - EINTR ) return - EINTR ; } oldStretch = g -> stretch ; user_params [ drive ] = * g ; if ( buffer_drive == drive ) SUPBOUND ( buffer_max , user_params [ drive ] . sect ) ; current_type [ drive ] = & user_params [ drive ] ; floppy_sizes [ drive ] = user_params [ drive ] . size ; if ( cmd == FDDEFPRM ) DRS -> keep_data = - 1 ; else DRS -> keep_data = 1 ; if ( DRS -> maxblock > user_params [ drive ] . sect || DRS -> maxtrack || ( ( user_params [ drive ] . sect ^ oldStretch ) & ( FD_SWAPSIDES | FD_SECTBASEMASK ) ) ) invalidate_drive ( bdev ) ; else process_fd_request ( ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> head <= 0 || ( unsigned char ) ( ( g -> sect << 2 ) >> FD_SIZECODE ( g ) ) ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1737\n\n```\nCWE-264 static int raw_cmd_copyin ( int cmd , void __user * param , struct floppy_raw_cmd * * rcmd ) { struct floppy_raw_cmd * ptr ; int ret ; int i ; * rcmd = NULL ; loop : ptr = kmalloc ( sizeof ( struct floppy_raw_cmd ) , GFP_USER ) ; if ( ! ptr ) return - ENOMEM ; * rcmd = ptr ; ret = copy_from_user ( ptr , param , sizeof ( * ptr ) ) ; <S2SV_StartBug> if ( ret ) <S2SV_EndBug> <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> ptr -> next = NULL ; ptr -> buffer_length = 0 ; param += sizeof ( struct floppy_raw_cmd ) ; if ( ptr -> cmd_count > 33 ) return - EINVAL ; for ( i = 0 ; i < 16 ; i ++ ) ptr -> reply [ i ] = 0 ; ptr -> resultcode = 0 ; <S2SV_StartBug> ptr -> kernel_data = NULL ; <S2SV_EndBug> if ( ptr -> flags & ( FD_RAW_READ | FD_RAW_WRITE ) ) { if ( ptr -> length <= 0 ) return - EINVAL ; ptr -> kernel_data = ( char * ) fd_dma_mem_alloc ( ptr -> length ) ; fallback_on_nodma_alloc ( & ptr -> kernel_data , ptr -> length ) ; if ( ! ptr -> kernel_data ) return - ENOMEM ; ptr -> buffer_length = ptr -> length ; } if ( ptr -> flags & FD_RAW_WRITE ) { ret = fd_copyin ( ptr -> data , ptr -> kernel_data , ptr -> length ) ; if ( ret ) return ret ; } if ( ptr -> flags & FD_RAW_MORE ) { rcmd = & ( ptr -> next ) ; ptr -> rate &= 0x43 ; goto loop ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; ptr -> next = NULL ; ptr -> buffer_length = 0 ; ptr -> kernel_data = NULL ; <S2SV_ModStart> return - EFAULT <S2SV_ModEnd> ; param += <S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( ptr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int http_buf_read ( URLContext * h , uint8_t * buf , int size ) { HTTPContext * s = h -> priv_data ; int len ; len = s -> buf_end - s -> buf_ptr ; if ( len > 0 ) { if ( len > size ) len = size ; memcpy ( buf , s -> buf_ptr , len ) ; s -> buf_ptr += len ; } else { <S2SV_StartBug> int64_t target_end = s -> end_off ? s -> end_off : s -> filesize ; <S2SV_EndBug> <S2SV_StartBug> if ( ( ! s -> willclose || s -> chunksize < 0 ) && <S2SV_EndBug> target_end >= 0 && s -> off >= target_end ) return AVERROR_EOF ; len = ffurl_read ( s -> hd , buf , size ) ; <S2SV_StartBug> if ( ! len && ( ! s -> willclose || s -> chunksize < 0 ) && <S2SV_EndBug> target_end >= 0 && s -> off < target_end ) { av_log ( h , AV_LOG_ERROR , <S2SV_StartBug> \"Stream<S2SV_blank>ends<S2SV_blank>prematurely<S2SV_blank>at<S2SV_blank>%\" PRId64 \",<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%\" PRId64 \"\\\\n\" , <S2SV_EndBug> s -> off , target_end ) ; return AVERROR ( EIO ) ; } } if ( len > 0 ) { s -> off += len ; if ( s -> chunksize > 0 ) s -> chunksize -= len ; } return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } else { uint64_t <S2SV_ModEnd> target_end = s <S2SV_ModStart> s -> chunksize == UINT64_MAX ) <S2SV_ModEnd> && s -> <S2SV_ModStart> s -> chunksize == UINT64_MAX ) && s -> off < <S2SV_ModEnd> target_end ) { <S2SV_ModStart> AV_LOG_ERROR , \"Stream<S2SV_blank>ends<S2SV_blank>prematurely<S2SV_blank>at<S2SV_blank>%\" PRIu64 \",<S2SV_blank>should<S2SV_blank>be<S2SV_blank>%\" PRIu64 <S2SV_ModEnd> \"\\\\n\" , s\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr3_leaf_clearflag ( struct xfs_da_args * args ) { struct xfs_attr_leafblock * leaf ; struct xfs_attr_leaf_entry * entry ; struct xfs_attr_leaf_name_remote * name_rmt ; struct xfs_buf * bp ; int error ; # ifdef DEBUG struct xfs_attr3_icleaf_hdr ichdr ; xfs_attr_leaf_name_local_t * name_loc ; int namelen ; char * name ; # endif trace_xfs_attr_leaf_clearflag ( args ) ; error = xfs_attr3_leaf_read ( args -> trans , args -> dp , args -> blkno , - 1 , & bp ) ; if ( error ) return ( error ) ; leaf = bp -> b_addr ; entry = & xfs_attr3_leaf_entryp ( leaf ) [ args -> index ] ; ASSERT ( entry -> flags & XFS_ATTR_INCOMPLETE ) ; # ifdef DEBUG xfs_attr3_leaf_hdr_from_disk ( & ichdr , leaf ) ; ASSERT ( args -> index < ichdr . count ) ; ASSERT ( args -> index >= 0 ) ; if ( entry -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf , args -> index ) ; namelen = name_loc -> namelen ; name = ( char * ) name_loc -> nameval ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf , args -> index ) ; namelen = name_rmt -> namelen ; name = ( char * ) name_rmt -> name ; } ASSERT ( be32_to_cpu ( entry -> hashval ) == args -> hashval ) ; ASSERT ( namelen == args -> namelen ) ; ASSERT ( memcmp ( name , args -> name , namelen ) == 0 ) ; # endif entry -> flags &= ~ XFS_ATTR_INCOMPLETE ; xfs_trans_log_buf ( args -> trans , bp , XFS_DA_LOGRANGE ( leaf , entry , sizeof ( * entry ) ) ) ; if ( args -> rmtblkno ) { ASSERT ( ( entry -> flags & XFS_ATTR_LOCAL ) == 0 ) ; name_rmt = xfs_attr3_leaf_name_remote ( leaf , args -> index ) ; name_rmt -> valueblk = cpu_to_be32 ( args -> rmtblkno ) ; <S2SV_StartBug> name_rmt -> valuelen = cpu_to_be32 ( args -> valuelen ) ; <S2SV_EndBug> xfs_trans_log_buf ( args -> trans , bp , XFS_DA_LOGRANGE ( leaf , name_rmt , sizeof ( * name_rmt ) ) ) ; } return xfs_trans_roll ( & args -> trans , args -> dp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( args -> rmtvaluelen <S2SV_ModEnd> ) ; xfs_trans_log_buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9420\n\n```\nCWE-399 static int rock_continue ( struct rock_state * rs ) { int ret = 1 ; int blocksize = 1 << rs -> inode -> i_blkbits ; const int min_de_size = offsetof ( struct rock_ridge , u ) ; kfree ( rs -> buffer ) ; rs -> buffer = NULL ; if ( ( unsigned ) rs -> cont_offset > blocksize - min_de_size || ( unsigned ) rs -> cont_size > blocksize || ( unsigned ) ( rs -> cont_offset + rs -> cont_size ) > blocksize ) { printk ( KERN_NOTICE \"rock:<S2SV_blank>corrupted<S2SV_blank>directory<S2SV_blank>entry.<S2SV_blank>\" \"extent=%d,<S2SV_blank>offset=%d,<S2SV_blank>size=%d\\\\n\" , rs -> cont_extent , rs -> cont_offset , rs -> cont_size ) ; ret = - EIO ; goto out ; } if ( rs -> cont_extent ) { struct buffer_head * bh ; rs -> buffer = kmalloc ( rs -> cont_size , GFP_KERNEL ) ; if ( ! rs -> buffer ) { ret = - ENOMEM ; goto out ; } ret = - EIO ; <S2SV_StartBug> bh = sb_bread ( rs -> inode -> i_sb , rs -> cont_extent ) ; <S2SV_EndBug> if ( bh ) { memcpy ( rs -> buffer , bh -> b_data + rs -> cont_offset , rs -> cont_size ) ; put_bh ( bh ) ; rs -> chr = rs -> buffer ; rs -> len = rs -> cont_size ; rs -> cont_extent = 0 ; rs -> cont_size = 0 ; rs -> cont_offset = 0 ; return 0 ; } printk ( \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>rock-ridge<S2SV_blank>attributes\\\\n\" ) ; } out : kfree ( rs -> buffer ) ; rs -> buffer = NULL ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EIO ; if ( ++ rs -> cont_loops >= RR_MAX_CE_ENTRIES ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 <S2SV_StartBug> static int m88rs2000_frontend_attach ( struct dvb_usb_adapter * d ) <S2SV_EndBug> { u8 obuf [ ] = { 0x51 } ; u8 ibuf [ ] = { 0 } ; <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 1 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> d -> fe_adap [ 0 ] . fe = dvb_attach ( m88rs2000_attach , & s421_m88rs2000_config , <S2SV_EndBug> <S2SV_StartBug> & d -> dev -> i2c_adap ) ; <S2SV_EndBug> <S2SV_StartBug> if ( d -> fe_adap [ 0 ] . fe == NULL ) <S2SV_EndBug> return - EIO ; <S2SV_StartBug> if ( dvb_attach ( ts2020_attach , d -> fe_adap [ 0 ] . fe , <S2SV_EndBug> & dw2104_ts2020_config , <S2SV_StartBug> & d -> dev -> i2c_adap ) ) { <S2SV_EndBug> info ( \"Attached<S2SV_blank>RS2000/TS2020!\" ) ; return 0 ; } info ( \"Failed<S2SV_blank>to<S2SV_blank>attach<S2SV_blank>RS2000/TS2020!\" ) ; return - EIO ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct dvb_usb_adapter * adap ) { struct dvb_usb_device * d = adap -> dev ; struct dw2102_state * state = d -> priv ; mutex_lock ( & d -> data_mutex ) ; state -> data [ 0 ] = 0x51 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> , 1 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; mutex_unlock ( & d -> data_mutex ) ; adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> & d -> <S2SV_ModEnd> i2c_adap ) ; <S2SV_ModStart> ; if ( adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> ( ts2020_attach , adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> , & d <S2SV_ModEnd> -> i2c_adap )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static uint64_t calc_plane_error ( unsigned char * orig , int orig_stride , unsigned char * recon , int recon_stride , unsigned int cols , unsigned int rows ) { unsigned int row , col ; uint64_t total_sse = 0 ; int diff ; for ( row = 0 ; row + 16 <= rows ; row += 16 ) { for ( col = 0 ; col + 16 <= cols ; col += 16 ) { unsigned int sse ; <S2SV_StartBug> vp8_mse16x16 ( orig + col , orig_stride , <S2SV_EndBug> recon + col , recon_stride , & sse ) ; total_sse += sse ; } if ( col < cols ) { unsigned int border_row , border_col ; unsigned char * border_orig = orig ; unsigned char * border_recon = recon ; for ( border_row = 0 ; border_row < 16 ; border_row ++ ) { for ( border_col = col ; border_col < cols ; border_col ++ ) { diff = border_orig [ border_col ] - border_recon [ border_col ] ; total_sse += diff * diff ; } border_orig += orig_stride ; border_recon += recon_stride ; } } orig += orig_stride * 16 ; recon += recon_stride * 16 ; } for ( ; row < rows ; row ++ ) { for ( col = 0 ; col < cols ; col ++ ) { diff = orig [ col ] - recon [ col ] ; total_sse += diff * diff ; } orig += orig_stride ; recon += recon_stride ; } vp8_clear_system_state ( ) ; return total_sse ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int sse ; vpx_mse16x16 <S2SV_ModEnd> ( orig +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * kye_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { switch ( hdev -> product ) { case USB_DEVICE_ID_KYE_ERGO_525V : <S2SV_StartBug> if ( * rsize >= 74 && <S2SV_EndBug> <S2SV_StartBug> rdesc [ 61 ] == 0x05 && rdesc [ 62 ] == 0x08 && <S2SV_EndBug> rdesc [ 63 ] == 0x19 && rdesc [ 64 ] == 0x08 && rdesc [ 65 ] == 0x29 && rdesc [ 66 ] == 0x0f && rdesc [ 71 ] == 0x75 && rdesc [ 72 ] == 0x08 && rdesc [ 73 ] == 0x95 && rdesc [ 74 ] == 0x01 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Kye/Genius<S2SV_blank>Ergo<S2SV_blank>Mouse<S2SV_blank>\" \"report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 62 ] = 0x09 ; rdesc [ 64 ] = 0x04 ; rdesc [ 66 ] = 0x07 ; rdesc [ 72 ] = 0x01 ; rdesc [ 74 ] = 0x08 ; } break ; case USB_DEVICE_ID_KYE_EASYPEN_I405X : if ( * rsize == EASYPEN_I405X_RDESC_ORIG_SIZE ) { rdesc = easypen_i405x_rdesc_fixed ; * rsize = sizeof ( easypen_i405x_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_KYE_MOUSEPEN_I608X : if ( * rsize == MOUSEPEN_I608X_RDESC_ORIG_SIZE ) { rdesc = mousepen_i608x_rdesc_fixed ; * rsize = sizeof ( mousepen_i608x_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_KYE_EASYPEN_M610X : if ( * rsize == EASYPEN_M610X_RDESC_ORIG_SIZE ) { rdesc = easypen_m610x_rdesc_fixed ; * rsize = sizeof ( easypen_m610x_rdesc_fixed ) ; } break ; case USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE : rdesc = kye_consumer_control_fixup ( hdev , rdesc , rsize , 104 , \"Genius<S2SV_blank>Gila<S2SV_blank>Gaming<S2SV_blank>Mouse\" ) ; break ; case USB_DEVICE_ID_GENIUS_GX_IMPERATOR : rdesc = kye_consumer_control_fixup ( hdev , rdesc , rsize , 83 , \"Genius<S2SV_blank>Gx<S2SV_blank>Imperator<S2SV_blank>Keyboard\" ) ; break ; case USB_DEVICE_ID_GENIUS_MANTICORE : rdesc = kye_consumer_control_fixup ( hdev , rdesc , rsize , 104 , \"Genius<S2SV_blank>Manticore<S2SV_blank>Keyboard\" ) ; break ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 75 && rdesc [ 61 ] == 0x05 && rdesc [ 62 ] == 0x08 && rdesc [ 63 ] == 0x19 && rdesc [ 64 ] == 0x08 && rdesc [ 65 ] == 0x29 && rdesc [ 66 ] == 0x0f && rdesc [ 71 ] == 0x75 && rdesc [ 72 ] == 0x08 && rdesc [ 73 ] == 0x95 && rdesc [ 74 ] == 0x01 ) { hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Kye/Genius<S2SV_blank>Ergo<S2SV_blank>Mouse<S2SV_blank>\" \"report<S2SV_blank>descriptor\\\\n\" ) ; <S2SV_ModEnd> rdesc [ 62 <S2SV_ModStart> [ 62 ] = 0x09 ; rdesc [ 64 ] = 0x04 ; rdesc [ 66 ] = 0x07 ; rdesc [ 72 ] = 0x01 ; rdesc [ 74 ] = 0x08 <S2SV_ModEnd> ; } break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010296\n\n```\nCWE-119 TEE_Result syscall_cryp_obj_populate ( unsigned long obj , struct utee_attribute * usr_attrs , unsigned long attr_count ) { TEE_Result res ; struct tee_ta_session * sess ; struct tee_obj * o ; const struct tee_cryp_obj_type_props * type_props ; TEE_Attribute * attrs = NULL ; res = tee_ta_get_current_session ( & sess ) ; if ( res != TEE_SUCCESS ) return res ; res = tee_obj_get ( to_user_ta_ctx ( sess -> ctx ) , tee_svc_uref_to_vaddr ( obj ) , & o ) ; if ( res != TEE_SUCCESS ) return res ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_PERSISTENT ) != 0 ) return TEE_ERROR_BAD_PARAMETERS ; if ( ( o -> info . handleFlags & TEE_HANDLE_FLAG_INITIALIZED ) != 0 ) return TEE_ERROR_BAD_PARAMETERS ; type_props = tee_svc_find_type_props ( o -> info . objectType ) ; if ( ! type_props ) return TEE_ERROR_NOT_IMPLEMENTED ; <S2SV_StartBug> attrs = malloc ( sizeof ( TEE_Attribute ) * attr_count ) ; <S2SV_EndBug> if ( ! attrs ) return TEE_ERROR_OUT_OF_MEMORY ; res = copy_in_attrs ( to_user_ta_ctx ( sess -> ctx ) , usr_attrs , attr_count , attrs ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_svc_cryp_check_attr ( ATTR_USAGE_POPULATE , type_props , attrs , attr_count ) ; if ( res != TEE_SUCCESS ) goto out ; res = tee_svc_cryp_obj_populate_type ( o , type_props , attrs , attr_count ) ; if ( res == TEE_SUCCESS ) o -> info . handleFlags |= TEE_HANDLE_FLAG_INITIALIZED ; out : free ( attrs ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return TEE_ERROR_NOT_IMPLEMENTED ; size_t alloc_size = 0 ; if ( MUL_OVERFLOW ( sizeof ( TEE_Attribute ) , attr_count , & alloc_size ) ) return TEE_ERROR_OVERFLOW ; <S2SV_ModStart> = malloc ( alloc_size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14399\n\n```\nCWE-000 rfbBool SetFormatAndEncodings ( rfbClient * client ) { rfbSetPixelFormatMsg spf ; <S2SV_StartBug> char buf [ sz_rfbSetEncodingsMsg + MAX_ENCODINGS * 4 ] ; <S2SV_EndBug> <S2SV_StartBug> rfbSetEncodingsMsg * se = ( rfbSetEncodingsMsg * ) buf ; <S2SV_EndBug> <S2SV_StartBug> uint32_t * encs = ( uint32_t * ) ( & buf [ sz_rfbSetEncodingsMsg ] ) ; <S2SV_EndBug> int len = 0 ; rfbBool requestCompressLevel = FALSE ; rfbBool requestQualityLevel = FALSE ; rfbBool requestLastRectEncoding = FALSE ; rfbClientProtocolExtension * e ; if ( ! SupportsClient2Server ( client , rfbSetPixelFormat ) ) return TRUE ; spf . type = rfbSetPixelFormat ; spf . pad1 = 0 ; spf . pad2 = 0 ; spf . format = client -> format ; spf . format . redMax = rfbClientSwap16IfLE ( spf . format . redMax ) ; spf . format . greenMax = rfbClientSwap16IfLE ( spf . format . greenMax ) ; spf . format . blueMax = rfbClientSwap16IfLE ( spf . format . blueMax ) ; if ( ! WriteToRFBServer ( client , ( char * ) & spf , sz_rfbSetPixelFormatMsg ) ) return FALSE ; if ( ! SupportsClient2Server ( client , rfbSetEncodings ) ) return TRUE ; se -> type = rfbSetEncodings ; se -> pad = 0 ; se -> nEncodings = 0 ; if ( client -> appData . encodingsString ) { const char * encStr = client -> appData . encodingsString ; int encStrLen ; do { const char * nextEncStr = strchr ( encStr , '<S2SV_blank>' ) ; if ( nextEncStr ) { encStrLen = nextEncStr - encStr ; nextEncStr ++ ; } else { encStrLen = strlen ( encStr ) ; } if ( strncasecmp ( encStr , \"raw\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingRaw ) ; } else if ( strncasecmp ( encStr , \"copyrect\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingCopyRect ) ; # ifdef LIBVNCSERVER_HAVE_LIBZ # ifdef LIBVNCSERVER_HAVE_LIBJPEG } else if ( strncasecmp ( encStr , \"tight\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingTight ) ; requestLastRectEncoding = TRUE ; if ( client -> appData . compressLevel >= 0 && client -> appData . compressLevel <= 9 ) requestCompressLevel = TRUE ; if ( client -> appData . enableJPEG ) requestQualityLevel = TRUE ; # endif # endif } else if ( strncasecmp ( encStr , \"hextile\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingHextile ) ; # ifdef LIBVNCSERVER_HAVE_LIBZ } else if ( strncasecmp ( encStr , \"zlib\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingZlib ) ; if ( client -> appData . compressLevel >= 0 && client -> appData . compressLevel <= 9 ) requestCompressLevel = TRUE ; } else if ( strncasecmp ( encStr , \"zlibhex\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingZlibHex ) ; if ( client -> appData . compressLevel >= 0 && client -> appData . compressLevel <= 9 ) requestCompressLevel = TRUE ; } else if ( strncasecmp ( encStr , \"trle\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingTRLE ) ; } else if ( strncasecmp ( encStr , \"zrle\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingZRLE ) ; } else if ( strncasecmp ( encStr , \"zywrle\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingZYWRLE ) ; requestQualityLevel = TRUE ; # endif } else if ( ( strncasecmp ( encStr , \"ultra\" , encStrLen ) == 0 ) || ( strncasecmp ( encStr , \"ultrazip\" , encStrLen ) == 0 ) ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingUltra ) ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingUltraZip ) ; } else if ( strncasecmp ( encStr , \"corre\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingCoRRE ) ; } else if ( strncasecmp ( encStr , \"rre\" , encStrLen ) == 0 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingRRE ) ; } else { rfbClientLog ( \"Unknown<S2SV_blank>encoding<S2SV_blank>\\'%.*s\\'\\\\n\" , encStrLen , encStr ) ; } encStr = nextEncStr ; } while ( encStr && se -> nEncodings < MAX_ENCODINGS ) ; if ( se -> nEncodings < MAX_ENCODINGS && requestCompressLevel ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( client -> appData . compressLevel + rfbEncodingCompressLevel0 ) ; } if ( se -> nEncodings < MAX_ENCODINGS && requestQualityLevel ) { if ( client -> appData . qualityLevel < 0 || client -> appData . qualityLevel > 9 ) client -> appData . qualityLevel = 5 ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( client -> appData . qualityLevel + rfbEncodingQualityLevel0 ) ; } } else { if ( SameMachine ( client -> sock ) ) { rfbClientLog ( \"Same<S2SV_blank>machine:<S2SV_blank>preferring<S2SV_blank>raw<S2SV_blank>encoding\\\\n\" ) ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingRaw ) ; } encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingCopyRect ) ; # ifdef LIBVNCSERVER_HAVE_LIBZ # ifdef LIBVNCSERVER_HAVE_LIBJPEG encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingTight ) ; requestLastRectEncoding = TRUE ; # endif # endif encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingHextile ) ; # ifdef LIBVNCSERVER_HAVE_LIBZ encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingZlib ) ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingZRLE ) ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingZYWRLE ) ; # endif encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingUltra ) ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingUltraZip ) ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingCoRRE ) ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingRRE ) ; if ( client -> appData . compressLevel >= 0 && client -> appData . compressLevel <= 9 ) { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( client -> appData . compressLevel + rfbEncodingCompressLevel0 ) ; } else { encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingCompressLevel1 ) ; } if ( client -> appData . enableJPEG ) { if ( client -> appData . qualityLevel < 0 || client -> appData . qualityLevel > 9 ) client -> appData . qualityLevel = 5 ; encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( client -> appData . qualityLevel + rfbEncodingQualityLevel0 ) ; } } if ( client -> appData . useRemoteCursor ) { if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingXCursor ) ; if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingRichCursor ) ; if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingPointerPos ) ; } if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingKeyboardLedState ) ; if ( se -> nEncodings < MAX_ENCODINGS && client -> canHandleNewFBSize ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingNewFBSize ) ; if ( se -> nEncodings < MAX_ENCODINGS && requestLastRectEncoding ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingLastRect ) ; if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingSupportedMessages ) ; if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingSupportedEncodings ) ; if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingServerIdentity ) ; if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( rfbEncodingXvp ) ; for ( e = rfbClientExtensions ; e ; e = e -> next ) if ( e -> encodings ) { int * enc ; for ( enc = e -> encodings ; * enc ; enc ++ ) if ( se -> nEncodings < MAX_ENCODINGS ) encs [ se -> nEncodings ++ ] = rfbClientSwap32IfLE ( * enc ) ; } len = sz_rfbSetEncodingsMsg + se -> nEncodings * 4 ; se -> nEncodings = rfbClientSwap16IfLE ( se -> nEncodings ) ; <S2SV_StartBug> if ( ! WriteToRFBServer ( client , buf , len ) ) return FALSE ; <S2SV_EndBug> return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rfbSetPixelFormatMsg spf ; union { char bytes <S2SV_ModEnd> [ sz_rfbSetEncodingsMsg + <S2SV_ModStart> ] ; rfbSetEncodingsMsg msg ; } buf ; rfbSetEncodingsMsg * se = & buf . msg <S2SV_ModEnd> ; uint32_t * <S2SV_ModStart> ( & buf . bytes <S2SV_ModStart> client , buf . bytes\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14681\n\n```\nCWE-787 static int kwajd_read_headers ( struct mspack_system * sys , struct mspack_file * fh , struct mskwajd_header * hdr ) { unsigned char buf [ 16 ] ; int i ; if ( sys -> read ( fh , & buf [ 0 ] , kwajh_SIZEOF ) != kwajh_SIZEOF ) { return MSPACK_ERR_READ ; } if ( ( ( unsigned int ) EndGetI32 ( & buf [ kwajh_Signature1 ] ) != 0x4A41574B ) || ( ( unsigned int ) EndGetI32 ( & buf [ kwajh_Signature2 ] ) != 0xD127F088 ) ) { return MSPACK_ERR_SIGNATURE ; } hdr -> comp_type = EndGetI16 ( & buf [ kwajh_CompMethod ] ) ; hdr -> data_offset = EndGetI16 ( & buf [ kwajh_DataOffset ] ) ; hdr -> headers = EndGetI16 ( & buf [ kwajh_Flags ] ) ; hdr -> length = 0 ; hdr -> filename = NULL ; hdr -> extra = NULL ; hdr -> extra_length = 0 ; if ( hdr -> headers & MSKWAJ_HDR_HASLENGTH ) { if ( sys -> read ( fh , & buf [ 0 ] , 4 ) != 4 ) return MSPACK_ERR_READ ; hdr -> length = EndGetI32 ( & buf [ 0 ] ) ; } if ( hdr -> headers & MSKWAJ_HDR_HASUNKNOWN1 ) { if ( sys -> read ( fh , & buf [ 0 ] , 2 ) != 2 ) return MSPACK_ERR_READ ; } if ( hdr -> headers & MSKWAJ_HDR_HASUNKNOWN2 ) { if ( sys -> read ( fh , & buf [ 0 ] , 2 ) != 2 ) return MSPACK_ERR_READ ; i = EndGetI16 ( & buf [ 0 ] ) ; if ( sys -> seek ( fh , ( off_t ) i , MSPACK_SYS_SEEK_CUR ) ) return MSPACK_ERR_SEEK ; } if ( hdr -> headers & ( MSKWAJ_HDR_HASFILENAME | MSKWAJ_HDR_HASFILEEXT ) ) { <S2SV_StartBug> off_t pos = sys -> tell ( fh ) ; <S2SV_EndBug> char * fn = ( char * ) sys -> alloc ( sys , ( size_t ) 13 ) ; <S2SV_StartBug> if ( ! fn ) return MSPACK_ERR_NOMEMORY ; <S2SV_EndBug> <S2SV_StartBug> hdr -> filename = fn ; <S2SV_EndBug> if ( hdr -> headers & MSKWAJ_HDR_HASFILENAME ) { <S2SV_StartBug> if ( sys -> read ( fh , & buf [ 0 ] , 9 ) != 9 ) return MSPACK_ERR_READ ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < 9 ; i ++ , fn ++ ) if ( ! ( * fn = buf [ i ] ) ) break ; <S2SV_EndBug> <S2SV_StartBug> pos += ( i < 9 ) ? i + 1 : 9 ; <S2SV_EndBug> if ( sys -> seek ( fh , pos , MSPACK_SYS_SEEK_START ) ) <S2SV_StartBug> return MSPACK_ERR_SEEK ; <S2SV_EndBug> } if ( hdr -> headers & MSKWAJ_HDR_HASFILEEXT ) { * fn ++ = '.' ; <S2SV_StartBug> if ( sys -> read ( fh , & buf [ 0 ] , 4 ) != 4 ) return MSPACK_ERR_READ ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < 4 ; i ++ , fn ++ ) if ( ! ( * fn = buf [ i ] ) ) break ; <S2SV_EndBug> <S2SV_StartBug> pos += ( i < 4 ) ? i + 1 : 4 ; <S2SV_EndBug> if ( sys -> seek ( fh , pos , MSPACK_SYS_SEEK_START ) ) <S2SV_StartBug> return MSPACK_ERR_SEEK ; <S2SV_EndBug> } * fn = '\\\\0' ; } if ( hdr -> headers & MSKWAJ_HDR_HASEXTRATEXT ) { if ( sys -> read ( fh , & buf [ 0 ] , 2 ) != 2 ) return MSPACK_ERR_READ ; i = EndGetI16 ( & buf [ 0 ] ) ; hdr -> extra = ( char * ) sys -> alloc ( sys , ( size_t ) i + 1 ) ; if ( ! hdr -> extra ) return MSPACK_ERR_NOMEMORY ; if ( sys -> read ( fh , hdr -> extra , i ) != i ) return MSPACK_ERR_READ ; hdr -> extra [ i ] = '\\\\0' ; hdr -> extra_length = i ; } return MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { int len <S2SV_ModEnd> ; char * <S2SV_ModStart> if ( ! ( hdr -> filename = fn ) ) <S2SV_ModEnd> return MSPACK_ERR_NOMEMORY ; <S2SV_ModStart> return MSPACK_ERR_NOMEMORY ; <S2SV_ModEnd> if ( hdr <S2SV_ModStart> { if ( ( len = <S2SV_ModStart> , 9 ) ) < 2 <S2SV_ModEnd> ) return MSPACK_ERR_READ <S2SV_ModStart> ; i < len <S2SV_ModEnd> ; i ++ <S2SV_ModStart> ; i ++ ) if ( ! ( * fn ++ <S2SV_ModEnd> = buf [ <S2SV_ModStart> ) break ; if ( i == 9 && buf [ 8 ] != '\\\\0' ) return MSPACK_ERR_DATAFORMAT ; if ( sys -> seek ( fh , ( off_t ) ( <S2SV_ModEnd> i + 1 <S2SV_ModStart> i + 1 - len ) , MSPACK_SYS_SEEK_CUR <S2SV_ModEnd> ) ) return <S2SV_ModStart> ) return MSPACK_ERR_SEEK ; fn -- <S2SV_ModStart> ; if ( ( len = <S2SV_ModStart> , 4 ) ) < 2 <S2SV_ModEnd> ) return MSPACK_ERR_READ <S2SV_ModStart> ; i < len <S2SV_ModEnd> ; i ++ <S2SV_ModStart> ; i ++ ) if ( ! ( * fn ++ <S2SV_ModEnd> = buf [ <S2SV_ModStart> ) break ; if ( i == 4 && buf [ 3 ] != '\\\\0' ) return MSPACK_ERR_DATAFORMAT ; if ( sys -> seek ( fh , ( off_t ) ( <S2SV_ModEnd> i + 1 <S2SV_ModStart> i + 1 - len ) , MSPACK_SYS_SEEK_CUR <S2SV_ModEnd> ) ) return <S2SV_ModStart> ) return MSPACK_ERR_SEEK ; fn --\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2486\n\n```\nCWE-264 int rpc_type_of_NPPVariable ( int variable ) { int type ; switch ( variable ) { case NPPVpluginNameString : case NPPVpluginDescriptionString : <S2SV_StartBug> case NPPVformValue : <S2SV_EndBug> type = RPC_TYPE_STRING ; break ; case NPPVpluginWindowSize : case NPPVpluginTimerInterval : type = RPC_TYPE_INT32 ; break ; case NPPVpluginNeedsXEmbed : case NPPVpluginWindowBool : case NPPVpluginTransparentBool : case NPPVjavascriptPushCallerBool : case NPPVpluginKeepLibraryInMemory : <S2SV_StartBug> type = RPC_TYPE_BOOLEAN ; <S2SV_EndBug> break ; case NPPVpluginScriptableNPObject : type = RPC_TYPE_NP_OBJECT ; break ; default : type = RPC_ERROR_GENERIC ; break ; } return type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : case NPPVformValue : case NPPVpluginNativeAccessibleAtkPlugId <S2SV_ModStart> case NPPVpluginKeepLibraryInMemory : case NPPVpluginUrlRequestsDisplayedBool : case NPPVpluginWantsAllNetworkStreams : case NPPVpluginCancelSrcStream : case NPPVSupportsAdvancedKeyHandling :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 static int jp2_bpcc_getdata ( jp2_box_t * box , jas_stream_t * in ) { jp2_bpcc_t * bpcc = & box -> data . bpcc ; <S2SV_StartBug> unsigned int i ; <S2SV_EndBug> bpcc -> numcmpts = box -> datalen ; if ( ! ( bpcc -> bpcs = jas_alloc2 ( bpcc -> numcmpts , sizeof ( uint_fast8_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < bpcc -> numcmpts ; ++ i ) { if ( jp2_getuint8 ( in , & bpcc -> bpcs [ i ] ) ) { return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int i ; bpcc -> bpcs = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 char * cJSON_Print ( cJSON * item ) { <S2SV_StartBug> return print_value ( item , 0 , 1 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 , 1 , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1788\n\n```\nCWE-399 int BN_GF2m_mod_inv ( BIGNUM * r , const BIGNUM * a , const BIGNUM * p , BN_CTX * ctx ) { BIGNUM * b , * c = NULL , * u = NULL , * v = NULL , * tmp ; int ret = 0 ; bn_check_top ( a ) ; bn_check_top ( p ) ; BN_CTX_start ( ctx ) ; if ( ( b = BN_CTX_get ( ctx ) ) == NULL ) goto err ; if ( ( c = BN_CTX_get ( ctx ) ) == NULL ) goto err ; if ( ( u = BN_CTX_get ( ctx ) ) == NULL ) goto err ; if ( ( v = BN_CTX_get ( ctx ) ) == NULL ) goto err ; if ( ! BN_GF2m_mod ( u , a , p ) ) goto err ; if ( BN_is_zero ( u ) ) goto err ; if ( ! BN_copy ( v , p ) ) goto err ; # if 0 if ( ! BN_one ( b ) ) goto err ; while ( 1 ) { while ( ! BN_is_odd ( u ) ) { if ( BN_is_zero ( u ) ) goto err ; if ( ! BN_rshift1 ( u , u ) ) goto err ; if ( BN_is_odd ( b ) ) { if ( ! BN_GF2m_add ( b , b , p ) ) goto err ; } if ( ! BN_rshift1 ( b , b ) ) goto err ; } if ( BN_abs_is_word ( u , 1 ) ) break ; if ( BN_num_bits ( u ) < BN_num_bits ( v ) ) { tmp = u ; u = v ; v = tmp ; tmp = b ; b = c ; c = tmp ; } if ( ! BN_GF2m_add ( u , u , v ) ) goto err ; if ( ! BN_GF2m_add ( b , b , c ) ) goto err ; } # else { <S2SV_StartBug> int i , ubits = BN_num_bits ( u ) , vbits = BN_num_bits ( v ) , <S2SV_EndBug> top = p -> top ; BN_ULONG * udp , * bdp , * vdp , * cdp ; bn_wexpand ( u , top ) ; udp = u -> d ; for ( i = u -> top ; i < top ; i ++ ) udp [ i ] = 0 ; u -> top = top ; bn_wexpand ( b , top ) ; bdp = b -> d ; bdp [ 0 ] = 1 ; for ( i = 1 ; i < top ; i ++ ) bdp [ i ] = 0 ; b -> top = top ; bn_wexpand ( c , top ) ; cdp = c -> d ; for ( i = 0 ; i < top ; i ++ ) cdp [ i ] = 0 ; c -> top = top ; vdp = v -> d ; while ( 1 ) { while ( ubits && ! ( udp [ 0 ] & 1 ) ) { BN_ULONG u0 , u1 , b0 , b1 , mask ; u0 = udp [ 0 ] ; b0 = bdp [ 0 ] ; mask = ( BN_ULONG ) 0 - ( b0 & 1 ) ; b0 ^= p -> d [ 0 ] & mask ; for ( i = 0 ; i < top - 1 ; i ++ ) { u1 = udp [ i + 1 ] ; udp [ i ] = ( ( u0 >> 1 ) | ( u1 << ( BN_BITS2 - 1 ) ) ) & BN_MASK2 ; u0 = u1 ; b1 = bdp [ i + 1 ] ^ ( p -> d [ i + 1 ] & mask ) ; bdp [ i ] = ( ( b0 >> 1 ) | ( b1 << ( BN_BITS2 - 1 ) ) ) & BN_MASK2 ; b0 = b1 ; } udp [ i ] = u0 >> 1 ; bdp [ i ] = b0 >> 1 ; ubits -- ; } <S2SV_StartBug> if ( ubits <= BN_BITS2 && udp [ 0 ] == 1 ) <S2SV_EndBug> <S2SV_StartBug> break ; <S2SV_EndBug> if ( ubits < vbits ) { i = ubits ; ubits = vbits ; vbits = i ; tmp = u ; u = v ; v = tmp ; tmp = b ; b = c ; c = tmp ; udp = vdp ; vdp = v -> d ; bdp = cdp ; cdp = c -> d ; } for ( i = 0 ; i < top ; i ++ ) { udp [ i ] ^= vdp [ i ] ; bdp [ i ] ^= cdp [ i ] ; } if ( ubits == vbits ) { BN_ULONG ul ; int utop = ( ubits - 1 ) / BN_BITS2 ; while ( ( ul = udp [ utop ] ) == 0 && utop ) utop -- ; ubits = utop * BN_BITS2 + BN_num_bits_word ( ul ) ; } } bn_correct_top ( b ) ; } # endif if ( ! BN_copy ( r , b ) ) goto err ; bn_check_top ( r ) ; ret = 1 ; err : # ifdef BN_DEBUG bn_correct_top ( c ) ; bn_correct_top ( u ) ; bn_correct_top ( v ) ; # endif BN_CTX_end ( ctx ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { int i ; int <S2SV_ModEnd> ubits = BN_num_bits <S2SV_ModStart> ( u ) ; int <S2SV_ModEnd> vbits = BN_num_bits <S2SV_ModStart> ( v ) ; int <S2SV_ModEnd> top = p <S2SV_ModStart> ubits <= BN_BITS2 ) { if ( <S2SV_ModEnd> udp [ 0 <S2SV_ModStart> 0 ] == 0 ) goto err ; if ( udp [ 0 ] == <S2SV_ModStart> ) break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5224\n\n```\nCWE-000 int main ( int argc , char * * argv ) { char * oldshell ; int nullshell = 0 ; const uid_t uid = getuid ( ) ; struct sinfo info = { 0 } ; struct passwd * pw ; sanitize_env ( ) ; setlocale ( LC_ALL , \"\" ) ; bindtextdomain ( PACKAGE , LOCALEDIR ) ; textdomain ( PACKAGE ) ; atexit ( close_stdout ) ; parse_argv ( argc , argv , & info ) ; if ( ! info . username ) { pw = getpwuid ( uid ) ; if ( ! pw ) errx ( EXIT_FAILURE , _ ( \"you<S2SV_blank>(user<S2SV_blank>%d)<S2SV_blank>don\\'t<S2SV_blank>exist.\" ) , uid ) ; } else { pw = getpwnam ( info . username ) ; if ( ! pw ) errx ( EXIT_FAILURE , _ ( \"user<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist.\" ) , info . username ) ; } # ifndef HAVE_LIBUSER if ( ! ( is_local ( pw -> pw_name ) ) ) errx ( EXIT_FAILURE , _ ( \"can<S2SV_blank>only<S2SV_blank>change<S2SV_blank>local<S2SV_blank>entries\" ) ) ; # endif # ifdef HAVE_LIBSELINUX if ( is_selinux_enabled ( ) > 0 ) { if ( uid == 0 ) { if ( checkAccess ( pw -> pw_name , PASSWD__CHSH ) != 0 ) { security_context_t user_context ; if ( getprevcon ( & user_context ) < 0 ) user_context = ( security_context_t ) NULL ; errx ( EXIT_FAILURE , _ ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>authorized<S2SV_blank>to<S2SV_blank>change<S2SV_blank>the<S2SV_blank>shell<S2SV_blank>of<S2SV_blank>%s\" ) , user_context ? : _ ( \"Unknown<S2SV_blank>user<S2SV_blank>context\" ) , pw -> pw_name ) ; } } if ( setupDefaultContext ( _PATH_PASSWD ) != 0 ) errx ( EXIT_FAILURE , _ ( \"can\\'t<S2SV_blank>set<S2SV_blank>default<S2SV_blank>context<S2SV_blank>for<S2SV_blank>%s\" ) , _PATH_PASSWD ) ; } # endif oldshell = pw -> pw_shell ; if ( oldshell == NULL || * oldshell == '\\\\0' ) { oldshell = _PATH_BSHELL ; nullshell = 1 ; } # ifdef HAVE_LIBUSER if ( geteuid ( ) != getuid ( ) && uid != pw -> pw_uid ) { # else if ( uid != 0 && uid != pw -> pw_uid ) { # endif errno = EACCES ; err ( EXIT_FAILURE , _ ( \"running<S2SV_blank>UID<S2SV_blank>doesn\\'t<S2SV_blank>match<S2SV_blank>UID<S2SV_blank>of<S2SV_blank>user<S2SV_blank>we\\'re<S2SV_blank>\" \"altering,<S2SV_blank>shell<S2SV_blank>change<S2SV_blank>denied\" ) ) ; } if ( uid != 0 && ! get_shell_list ( oldshell ) ) { errno = EACCES ; err ( EXIT_FAILURE , _ ( \"your<S2SV_blank>shell<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>%s,<S2SV_blank>\" \"shell<S2SV_blank>change<S2SV_blank>denied\" ) , _PATH_SHELLS ) ; } printf ( _ ( \"Changing<S2SV_blank>shell<S2SV_blank>for<S2SV_blank>%s.\\\\n\" ) , pw -> pw_name ) ; # if ! defined ( HAVE_LIBUSER ) && defined ( CHFN_CHSH_PASSWORD ) if ( ! auth_pam ( \"chsh\" , uid , pw -> pw_name ) ) { return EXIT_FAILURE ; } # endif if ( ! info . shell ) { info . shell = ask_new_shell ( _ ( \"New<S2SV_blank>shell\" ) , oldshell ) ; if ( ! info . shell ) return EXIT_SUCCESS ; } check_shell ( info . shell ) ; if ( ! nullshell && strcmp ( oldshell , info . shell ) == 0 ) errx ( EXIT_SUCCESS , _ ( \"Shell<S2SV_blank>not<S2SV_blank>changed.\" ) ) ; # ifdef HAVE_LIBUSER if ( set_value_libuser ( \"chsh\" , pw -> pw_name , uid , LU_LOGINSHELL , info . shell ) < 0 ) errx ( EXIT_FAILURE , _ ( \"Shell<S2SV_blank>*NOT*<S2SV_blank>changed.<S2SV_blank><S2SV_blank>Try<S2SV_blank>again<S2SV_blank>later.\" ) ) ; # else pw -> pw_shell = info . shell ; <S2SV_StartBug> if ( setpwnam ( pw ) < 0 ) <S2SV_EndBug> err ( EXIT_FAILURE , _ ( \"setpwnam<S2SV_blank>failed\\\\n\" \"Shell<S2SV_blank>*NOT*<S2SV_blank>changed.<S2SV_blank><S2SV_blank>Try<S2SV_blank>again<S2SV_blank>later.\" ) ) ; # endif printf ( _ ( \"Shell<S2SV_blank>changed.\\\\n\" ) ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> setpwnam ( pw , \".chsh\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11665\n\n```\nCWE-20 int ff_amf_get_field_value ( const uint8_t * data , const uint8_t * data_end , const uint8_t * name , uint8_t * dst , int dst_size ) { <S2SV_StartBug> int namelen = strlen ( name ) ; <S2SV_EndBug> int len ; while ( * data != AMF_DATA_TYPE_OBJECT && data < data_end ) { len = ff_amf_tag_size ( data , data_end ) ; <S2SV_StartBug> if ( len < 0 ) <S2SV_EndBug> len = data_end - data ; data += len ; } if ( data_end - data < 3 ) return - 1 ; <S2SV_StartBug> data ++ ; <S2SV_EndBug> for ( ; ; ) { int size = bytestream_get_be16 ( & data ) ; <S2SV_StartBug> if ( ! size ) <S2SV_EndBug> break ; if ( size < 0 || size >= data_end - data ) return - 1 ; data += size ; <S2SV_StartBug> if ( size == namelen && ! memcmp ( data - size , name , namelen ) ) { <S2SV_EndBug> switch ( * data ++ ) { case AMF_DATA_TYPE_NUMBER : <S2SV_StartBug> snprintf ( dst , dst_size , \"%g\" , av_int2double ( AV_RB64 ( data ) ) ) ; <S2SV_EndBug> break ; case AMF_DATA_TYPE_BOOL : snprintf ( dst , dst_size , \"%s\" , * data ? \"true\" : \"false\" ) ; break ; case AMF_DATA_TYPE_STRING : len = bytestream_get_be16 ( & data ) ; av_strlcpy ( dst , data , FFMIN ( len + 1 , dst_size ) ) ; break ; default : return - 1 ; } return 0 ; } len = ff_amf_tag_size ( data , data_end ) ; if ( len < 0 || len >= data_end - data ) return - 1 ; data += len ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dst_size ) { GetByteContext gb <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; if ( data >= data_end <S2SV_ModEnd> ) return - <S2SV_ModStart> - 1 ; bytestream2_init ( & gb , data , data_end - <S2SV_ModEnd> data ) ; <S2SV_ModStart> data ) ; return amf_get_field_value2 ( & gb <S2SV_ModEnd> , name , <S2SV_ModStart> , name , <S2SV_ModEnd> dst , dst_size <S2SV_ModStart> dst , dst_size ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1797\n\n```\nCWE-399 static int kvm_set_guest_paused ( struct kvm_vcpu * vcpu ) { <S2SV_StartBug> if ( ! vcpu -> arch . time_page ) <S2SV_EndBug> return - EINVAL ; vcpu -> arch . pvclock_set_guest_stopped_request = true ; kvm_make_request ( KVM_REQ_CLOCK_UPDATE , vcpu ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> arch . pv_time_enabled <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12818\n\n```\nCWE-476 int nfc_llcp_send_cc ( struct nfc_llcp_sock * sock ) { struct nfc_llcp_local * local ; struct sk_buff * skb ; u8 * miux_tlv = NULL , miux_tlv_length ; u8 * rw_tlv = NULL , rw_tlv_length , rw ; int err ; u16 size = 0 ; __be16 miux ; pr_debug ( \"Sending<S2SV_blank>CC\\\\n\" ) ; local = sock -> local ; if ( local == NULL ) return - ENODEV ; miux = be16_to_cpu ( sock -> miux ) > LLCP_MAX_MIUX ? local -> miux : sock -> miux ; rw = sock -> rw > LLCP_MAX_RW ? local -> rw : sock -> rw ; miux_tlv = nfc_llcp_build_tlv ( LLCP_TLV_MIUX , ( u8 * ) & miux , 0 , & miux_tlv_length ) ; <S2SV_StartBug> size += miux_tlv_length ; <S2SV_EndBug> rw_tlv = nfc_llcp_build_tlv ( LLCP_TLV_RW , & rw , 0 , & rw_tlv_length ) ; <S2SV_StartBug> size += rw_tlv_length ; <S2SV_EndBug> skb = llcp_allocate_pdu ( sock , LLCP_PDU_CC , size ) ; if ( skb == NULL ) { err = - ENOMEM ; goto error_tlv ; } llcp_add_tlv ( skb , miux_tlv , miux_tlv_length ) ; llcp_add_tlv ( skb , rw_tlv , rw_tlv_length ) ; skb_queue_tail ( & local -> tx_queue , skb ) ; err = 0 ; error_tlv : if ( err ) pr_err ( \"error<S2SV_blank>%d\\\\n\" , err ) ; kfree ( miux_tlv ) ; kfree ( rw_tlv ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> miux_tlv_length ) ; if ( ! miux_tlv ) { err = - ENOMEM ; goto error_tlv ; } <S2SV_ModStart> rw_tlv_length ) ; if ( ! rw_tlv ) { err = - ENOMEM ; goto error_tlv ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { unsigned x , y ; AVFilterContext * ctx = inlink -> dst ; VignetteContext * s = ctx -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; AVFrame * out ; out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; if ( s -> eval_mode == EVAL_MODE_FRAME ) update_context ( s , inlink , in ) ; if ( s -> desc -> flags & AV_PIX_FMT_FLAG_RGB ) { uint8_t * dst = out -> data [ 0 ] ; const uint8_t * src = in -> data [ 0 ] ; const float * fmap = s -> fmap ; const int dst_linesize = out -> linesize [ 0 ] ; const int src_linesize = in -> linesize [ 0 ] ; const int fmap_linesize = s -> fmap_linesize ; for ( y = 0 ; y < inlink -> h ; y ++ ) { uint8_t * dstp = dst ; const uint8_t * srcp = src ; for ( x = 0 ; x < inlink -> w ; x ++ , dstp += 3 , srcp += 3 ) { const float f = fmap [ x ] ; dstp [ 0 ] = av_clip_uint8 ( srcp [ 0 ] * f + get_dither_value ( s ) ) ; dstp [ 1 ] = av_clip_uint8 ( srcp [ 1 ] * f + get_dither_value ( s ) ) ; dstp [ 2 ] = av_clip_uint8 ( srcp [ 2 ] * f + get_dither_value ( s ) ) ; } dst += dst_linesize ; src += src_linesize ; fmap += fmap_linesize ; } } else { int plane ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && in -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> uint8_t * dst = out -> data [ plane ] ; const uint8_t * src = in -> data [ plane ] ; const float * fmap = s -> fmap ; const int dst_linesize = out -> linesize [ plane ] ; const int src_linesize = in -> linesize [ plane ] ; const int fmap_linesize = s -> fmap_linesize ; const int chroma = plane == 1 || plane == 2 ; const int hsub = chroma ? s -> desc -> log2_chroma_w : 0 ; const int vsub = chroma ? s -> desc -> log2_chroma_h : 0 ; const int w = FF_CEIL_RSHIFT ( inlink -> w , hsub ) ; const int h = FF_CEIL_RSHIFT ( inlink -> h , vsub ) ; for ( y = 0 ; y < h ; y ++ ) { uint8_t * dstp = dst ; const uint8_t * srcp = src ; for ( x = 0 ; x < w ; x ++ ) { const double dv = get_dither_value ( s ) ; if ( chroma ) * dstp ++ = av_clip_uint8 ( fmap [ x << hsub ] * ( * srcp ++ - 127 ) + 127 + dv ) ; else * dstp ++ = av_clip_uint8 ( fmap [ x ] * * srcp ++ + dv ) ; } dst += dst_linesize ; src += src_linesize ; fmap += fmap_linesize << vsub ; } } } return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in -> data [ plane ] && in -> linesize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 int pidfile_write ( const char * pid_file , int pid ) { FILE * pidfile = NULL ; <S2SV_StartBug> int pidfd = creat ( pid_file , S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ) ; <S2SV_EndBug> if ( pidfd != - 1 ) pidfile = fdopen ( pidfd , \"w\" ) ; if ( ! pidfile ) { log_message ( LOG_INFO , \"pidfile_write<S2SV_blank>:<S2SV_blank>Cannot<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>pidfile\" , pid_file ) ; return 0 ; } fprintf ( pidfile , \"%d\\\\n\" , pid ) ; fclose ( pidfile ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int pidfd = open ( pid_file , O_NOFOLLOW | O_CREAT | O_WRONLY | O_TRUNC <S2SV_ModEnd> , S_IRUSR |\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int lxc_mount_auto_mounts ( struct lxc_conf * conf , int flags , struct lxc_handler * handler ) { int r ; size_t i ; static struct { int match_mask ; int match_flag ; const char * source ; const char * destination ; const char * fstype ; unsigned long flags ; const char * options ; } default_mounts [ ] = { { LXC_AUTO_PROC_MASK , LXC_AUTO_PROC_MIXED , \"proc\" , \"%r/proc\" , \"proc\" , MS_NODEV | MS_NOEXEC | MS_NOSUID , NULL } , <S2SV_StartBug> { LXC_AUTO_PROC_MASK , LXC_AUTO_PROC_MIXED , \"%r/proc/sys/net\" , \"%r/proc/net\" , NULL , MS_BIND , NULL } , <S2SV_EndBug> { LXC_AUTO_PROC_MASK , LXC_AUTO_PROC_MIXED , \"%r/proc/sys\" , \"%r/proc/sys\" , NULL , MS_BIND , NULL } , { LXC_AUTO_PROC_MASK , LXC_AUTO_PROC_MIXED , NULL , \"%r/proc/sys\" , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL } , <S2SV_StartBug> { LXC_AUTO_PROC_MASK , LXC_AUTO_PROC_MIXED , \"%r/proc/net\" , \"%r/proc/sys/net\" , NULL , MS_MOVE , NULL } , <S2SV_EndBug> { LXC_AUTO_PROC_MASK , LXC_AUTO_PROC_MIXED , \"%r/proc/sysrq-trigger\" , \"%r/proc/sysrq-trigger\" , NULL , MS_BIND , NULL } , { LXC_AUTO_PROC_MASK , LXC_AUTO_PROC_MIXED , NULL , \"%r/proc/sysrq-trigger\" , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL } , { LXC_AUTO_PROC_MASK , LXC_AUTO_PROC_RW , \"proc\" , \"%r/proc\" , \"proc\" , MS_NODEV | MS_NOEXEC | MS_NOSUID , NULL } , { LXC_AUTO_SYS_MASK , LXC_AUTO_SYS_RW , \"sysfs\" , \"%r/sys\" , \"sysfs\" , 0 , NULL } , { LXC_AUTO_SYS_MASK , LXC_AUTO_SYS_RO , \"sysfs\" , \"%r/sys\" , \"sysfs\" , MS_RDONLY , NULL } , { LXC_AUTO_SYS_MASK , LXC_AUTO_SYS_MIXED , \"sysfs\" , \"%r/sys\" , \"sysfs\" , MS_NODEV | MS_NOEXEC | MS_NOSUID , NULL } , { LXC_AUTO_SYS_MASK , LXC_AUTO_SYS_MIXED , \"%r/sys\" , \"%r/sys\" , NULL , MS_BIND , NULL } , { LXC_AUTO_SYS_MASK , LXC_AUTO_SYS_MIXED , NULL , \"%r/sys\" , NULL , MS_REMOUNT | MS_BIND | MS_RDONLY , NULL } , { LXC_AUTO_SYS_MASK , LXC_AUTO_SYS_MIXED , \"sysfs\" , \"%r/sys/devices/virtual/net\" , \"sysfs\" , 0 , NULL } , { LXC_AUTO_SYS_MASK , LXC_AUTO_SYS_MIXED , \"%r/sys/devices/virtual/net/devices/virtual/net\" , \"%r/sys/devices/virtual/net\" , NULL , MS_BIND , NULL } , { LXC_AUTO_SYS_MASK , LXC_AUTO_SYS_MIXED , NULL , \"%r/sys/devices/virtual/net\" , NULL , MS_REMOUNT | MS_BIND | MS_NOSUID | MS_NODEV | MS_NOEXEC , NULL } , { 0 , 0 , NULL , NULL , NULL , 0 , NULL } } ; for ( i = 0 ; default_mounts [ i ] . match_mask ; i ++ ) { if ( ( flags & default_mounts [ i ] . match_mask ) == default_mounts [ i ] . match_flag ) { char * source = NULL ; char * destination = NULL ; int saved_errno ; unsigned long mflags ; if ( default_mounts [ i ] . source ) { source = lxc_string_replace ( \"%r\" , conf -> rootfs . path ? conf -> rootfs . mount : \"\" , default_mounts [ i ] . source ) ; if ( ! source ) { SYSERROR ( \"memory<S2SV_blank>allocation<S2SV_blank>error\" ) ; return - 1 ; } } if ( default_mounts [ i ] . destination ) { destination = lxc_string_replace ( \"%r\" , conf -> rootfs . path ? conf -> rootfs . mount : \"\" , default_mounts [ i ] . destination ) ; if ( ! destination ) { saved_errno = errno ; SYSERROR ( \"memory<S2SV_blank>allocation<S2SV_blank>error\" ) ; free ( source ) ; errno = saved_errno ; return - 1 ; } } mflags = add_required_remount_flags ( source , destination , default_mounts [ i ] . flags ) ; <S2SV_StartBug> r = mount ( source , destination , default_mounts [ i ] . fstype , mflags , default_mounts [ i ] . options ) ; <S2SV_EndBug> saved_errno = errno ; if ( r < 0 && errno == ENOENT ) { INFO ( \"Mount<S2SV_blank>source<S2SV_blank>or<S2SV_blank>target<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>doesn\\'t<S2SV_blank>exist.<S2SV_blank>Skipping.\" , source , destination ) ; r = 0 ; } else if ( r < 0 ) SYSERROR ( \"error<S2SV_blank>mounting<S2SV_blank>%s<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>flags<S2SV_blank>%lu\" , source , destination , mflags ) ; free ( source ) ; free ( destination ) ; if ( r < 0 ) { errno = saved_errno ; return - 1 ; } } } if ( flags & LXC_AUTO_CGROUP_MASK ) { int cg_flags ; cg_flags = flags & LXC_AUTO_CGROUP_MASK ; if ( cg_flags == LXC_AUTO_CGROUP_NOSPEC || cg_flags == LXC_AUTO_CGROUP_FULL_NOSPEC ) { int has_sys_admin = 0 ; if ( ! lxc_list_empty ( & conf -> keepcaps ) ) { has_sys_admin = in_caplist ( CAP_SYS_ADMIN , & conf -> keepcaps ) ; } else { has_sys_admin = ! in_caplist ( CAP_SYS_ADMIN , & conf -> caps ) ; } if ( cg_flags == LXC_AUTO_CGROUP_NOSPEC ) { cg_flags = has_sys_admin ? LXC_AUTO_CGROUP_RW : LXC_AUTO_CGROUP_MIXED ; } else { cg_flags = has_sys_admin ? LXC_AUTO_CGROUP_FULL_RW : LXC_AUTO_CGROUP_FULL_MIXED ; } } if ( ! cgroup_mount ( conf -> rootfs . path ? conf -> rootfs . mount : \"\" , handler , cg_flags ) ) { SYSERROR ( \"error<S2SV_blank>mounting<S2SV_blank>/sys/fs/cgroup\" ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , \"%r/proc/sys/net\" , \"%r/proc/tty\" <S2SV_ModEnd> , NULL , <S2SV_ModStart> , LXC_AUTO_PROC_MIXED , \"%r/proc/tty\" <S2SV_ModEnd> , \"%r/proc/sys/net\" , <S2SV_ModStart> ; r = safe_mount ( source , destination , default_mounts [ i ] . fstype , mflags , default_mounts [ i ] . options , conf -> rootfs . path ? conf -> rootfs . mount : NULL <S2SV_ModEnd> ) ; saved_errno\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int add_ast_fields ( void ) { PyObject * empty_tuple , * d ; if ( PyType_Ready ( & AST_type ) < 0 ) return - 1 ; d = AST_type . tp_dict ; empty_tuple = PyTuple_New ( 0 ) ; if ( ! empty_tuple || <S2SV_StartBug> PyDict_SetItemString ( d , \"_fields\" , empty_tuple ) < 0 || <S2SV_EndBug> <S2SV_StartBug> PyDict_SetItemString ( d , \"_attributes\" , empty_tuple ) < 0 ) { <S2SV_EndBug> Py_XDECREF ( empty_tuple ) ; return - 1 ; } Py_DECREF ( empty_tuple ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! empty_tuple || _PyDict_SetItemId <S2SV_ModEnd> ( d , <S2SV_ModStart> ( d , & PyId__fields <S2SV_ModEnd> , empty_tuple ) <S2SV_ModStart> < 0 || _PyDict_SetItemId <S2SV_ModEnd> ( d , <S2SV_ModStart> ( d , & PyId__attributes <S2SV_ModEnd> , empty_tuple )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2745\n\n```\nCWE-119 int copy_creds ( struct task_struct * p , unsigned long clone_flags ) { # ifdef CONFIG_KEYS struct thread_group_cred * tgcred ; # endif struct cred * new ; int ret ; <S2SV_StartBug> if ( <S2SV_EndBug> # ifdef CONFIG_KEYS ! p -> cred -> thread_keyring && # endif clone_flags & CLONE_THREAD ) { p -> real_cred = get_cred ( p -> cred ) ; get_cred ( p -> cred ) ; alter_cred_subscribers ( p -> cred , 2 ) ; kdebug ( \"share_creds(%p{%d,%d})\" , p -> cred , atomic_read ( & p -> cred -> usage ) , read_cred_subscribers ( p -> cred ) ) ; atomic_inc ( & p -> cred -> user -> processes ) ; return 0 ; } new = prepare_creds ( ) ; if ( ! new ) return - ENOMEM ; if ( clone_flags & CLONE_NEWUSER ) { ret = create_user_ns ( new ) ; if ( ret < 0 ) goto error_put ; } new -> user_ns = new -> user -> user_ns ; # ifdef CONFIG_KEYS if ( new -> thread_keyring ) { key_put ( new -> thread_keyring ) ; new -> thread_keyring = NULL ; if ( clone_flags & CLONE_THREAD ) install_thread_keyring_to_cred ( new ) ; } if ( ! ( clone_flags & CLONE_THREAD ) ) { tgcred = kmalloc ( sizeof ( * tgcred ) , GFP_KERNEL ) ; if ( ! tgcred ) { ret = - ENOMEM ; goto error_put ; } atomic_set ( & tgcred -> usage , 1 ) ; spin_lock_init ( & tgcred -> lock ) ; tgcred -> process_keyring = NULL ; tgcred -> session_keyring = key_get ( new -> tgcred -> session_keyring ) ; release_tgcred ( new ) ; new -> tgcred = tgcred ; } # endif atomic_inc ( & new -> user -> processes ) ; p -> cred = p -> real_cred = get_cred ( new ) ; alter_cred_subscribers ( new , 2 ) ; validate_creds ( new ) ; return 0 ; error_put : put_cred ( new ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int ret ; p -> replacement_session_keyring = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline signed short ReadPropertyMSBShort ( const unsigned char * * p , size_t * length ) { union { unsigned short unsigned_value ; signed short signed_value ; } quantum ; int c ; register ssize_t i ; unsigned char buffer [ 2 ] ; unsigned short value ; if ( * length < 2 ) return ( ( unsigned short ) ~ 0 ) ; for ( i = 0 ; i < 2 ; i ++ ) { c = ( int ) ( * ( * p ) ++ ) ; ( * length ) -- ; buffer [ i ] = ( unsigned char ) c ; } <S2SV_StartBug> value = ( unsigned short ) ( buffer [ 0 ] << 8 ) ; <S2SV_EndBug> <S2SV_StartBug> value |= buffer [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned short ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> ] << 8 <S2SV_ModEnd> ; value |= <S2SV_ModStart> ; value |= ( unsigned short ) <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffff <S2SV_ModStart> value & 0xffff <S2SV_ModEnd> ; return (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9620\n\n```\nCWE-399 public int magic_setparam ( struct magic_set * ms , int param , const void * val ) { switch ( param ) { case MAGIC_PARAM_INDIR_MAX : ms -> indir_max = * ( const size_t * ) val ; return 0 ; case MAGIC_PARAM_NAME_MAX : ms -> name_max = * ( const size_t * ) val ; return 0 ; case MAGIC_PARAM_ELF_PHNUM_MAX : ms -> elf_phnum_max = * ( const size_t * ) val ; return 0 ; case MAGIC_PARAM_ELF_SHNUM_MAX : ms -> elf_shnum_max = * ( const size_t * ) val ; return 0 ; <S2SV_StartBug> default : <S2SV_EndBug> errno = EINVAL ; return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; case MAGIC_PARAM_ELF_NOTES_MAX : ms -> elf_notes_max = * ( const size_t * ) val ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8828\n\n```\nCWE-119 int tmx_check_pretran ( sip_msg_t * msg ) { unsigned int chid ; unsigned int slotid ; int dsize ; struct via_param * vbr ; str scallid ; str scseqmet ; str scseqnum ; str sftag ; str svbranch = { NULL , 0 } ; pretran_t * it ; if ( _tmx_ptran_table == NULL ) { LM_ERR ( \"pretran<S2SV_blank>hash<S2SV_blank>table<S2SV_blank>not<S2SV_blank>initialized<S2SV_blank>yet\\\\n\" ) ; return - 1 ; } if ( get_route_type ( ) != REQUEST_ROUTE ) { LM_ERR ( \"invalid<S2SV_blank>usage<S2SV_blank>-<S2SV_blank>not<S2SV_blank>in<S2SV_blank>request<S2SV_blank>route\\\\n\" ) ; return - 1 ; } if ( msg -> first_line . type != SIP_REQUEST ) { LM_ERR ( \"invalid<S2SV_blank>usage<S2SV_blank>-<S2SV_blank>not<S2SV_blank>a<S2SV_blank>sip<S2SV_blank>request\\\\n\" ) ; return - 1 ; } if ( parse_headers ( msg , HDR_FROM_F | HDR_VIA1_F | HDR_CALLID_F | HDR_CSEQ_F , 0 ) < 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>required<S2SV_blank>headers\\\\n\" ) ; return - 1 ; } if ( msg -> cseq == NULL || msg -> cseq -> parsed == NULL ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>cseq<S2SV_blank>headers\\\\n\" ) ; return - 1 ; } if ( get_cseq ( msg ) -> method_id == METHOD_ACK || get_cseq ( msg ) -> method_id == METHOD_CANCEL ) { LM_DBG ( \"no<S2SV_blank>pre-transaction<S2SV_blank>management<S2SV_blank>for<S2SV_blank>ACK<S2SV_blank>or<S2SV_blank>CANCEL\\\\n\" ) ; return - 1 ; } if ( msg -> via1 == 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>Via<S2SV_blank>header\\\\n\" ) ; return - 1 ; } if ( parse_from_header ( msg ) < 0 || get_from ( msg ) -> tag_value . len == 0 ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>From<S2SV_blank>header\\\\n\" ) ; return - 1 ; } if ( msg -> callid == NULL || msg -> callid -> body . s == NULL ) { LM_ERR ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>callid<S2SV_blank>headers\\\\n\" ) ; return - 1 ; } vbr = msg -> via1 -> branch ; scallid = msg -> callid -> body ; trim ( & scallid ) ; scseqmet = get_cseq ( msg ) -> method ; trim ( & scseqmet ) ; scseqnum = get_cseq ( msg ) -> number ; trim ( & scseqnum ) ; sftag = get_from ( msg ) -> tag_value ; trim ( & sftag ) ; chid = get_hash1_raw ( msg -> callid -> body . s , msg -> callid -> body . len ) ; slotid = chid & ( _tmx_ptran_size - 1 ) ; if ( unlikely ( _tmx_proc_ptran == NULL ) ) { _tmx_proc_ptran = ( pretran_t * ) shm_malloc ( sizeof ( pretran_t ) ) ; if ( _tmx_proc_ptran == NULL ) { LM_ERR ( \"not<S2SV_blank>enough<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>pretran<S2SV_blank>structure\\\\n\" ) ; return - 1 ; } memset ( _tmx_proc_ptran , 0 , sizeof ( pretran_t ) ) ; _tmx_proc_ptran -> pid = my_pid ( ) ; } dsize = scallid . len + scseqnum . len + scseqmet . len + sftag . len + 4 ; if ( likely ( vbr != NULL ) ) { svbranch = vbr -> value ; trim ( & svbranch ) ; <S2SV_StartBug> dsize += svbranch . len ; <S2SV_EndBug> } if ( dsize < 256 ) dsize = 256 ; tmx_pretran_unlink ( ) ; if ( dsize > _tmx_proc_ptran -> dbuf . len ) { if ( _tmx_proc_ptran -> dbuf . s ) shm_free ( _tmx_proc_ptran -> dbuf . s ) ; _tmx_proc_ptran -> dbuf . s = ( char * ) shm_malloc ( dsize ) ; if ( _tmx_proc_ptran -> dbuf . s == NULL ) { LM_ERR ( \"not<S2SV_blank>enough<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>pretran<S2SV_blank>data\\\\n\" ) ; return - 1 ; } _tmx_proc_ptran -> dbuf . len = dsize ; } _tmx_proc_ptran -> hid = chid ; _tmx_proc_ptran -> cseqmetid = ( get_cseq ( msg ) ) -> method_id ; _tmx_proc_ptran -> callid . s = _tmx_proc_ptran -> dbuf . s ; memcpy ( _tmx_proc_ptran -> callid . s , scallid . s , scallid . len ) ; _tmx_proc_ptran -> callid . len = scallid . len ; _tmx_proc_ptran -> callid . s [ _tmx_proc_ptran -> callid . len ] = '\\\\0' ; _tmx_proc_ptran -> ftag . s = _tmx_proc_ptran -> callid . s + _tmx_proc_ptran -> callid . len + 1 ; memcpy ( _tmx_proc_ptran -> ftag . s , sftag . s , sftag . len ) ; _tmx_proc_ptran -> ftag . len = sftag . len ; _tmx_proc_ptran -> ftag . s [ _tmx_proc_ptran -> ftag . len ] = '\\\\0' ; _tmx_proc_ptran -> cseqnum . s = _tmx_proc_ptran -> ftag . s + _tmx_proc_ptran -> ftag . len + 1 ; memcpy ( _tmx_proc_ptran -> cseqnum . s , scseqnum . s , scseqnum . len ) ; _tmx_proc_ptran -> cseqnum . len = scseqnum . len ; _tmx_proc_ptran -> cseqnum . s [ _tmx_proc_ptran -> cseqnum . len ] = '\\\\0' ; _tmx_proc_ptran -> cseqmet . s = _tmx_proc_ptran -> cseqnum . s + _tmx_proc_ptran -> cseqnum . len + 1 ; memcpy ( _tmx_proc_ptran -> cseqmet . s , scseqmet . s , scseqmet . len ) ; _tmx_proc_ptran -> cseqmet . len = scseqmet . len ; _tmx_proc_ptran -> cseqmet . s [ _tmx_proc_ptran -> cseqmet . len ] = '\\\\0' ; if ( likely ( vbr != NULL ) ) { _tmx_proc_ptran -> vbranch . s = _tmx_proc_ptran -> cseqmet . s + _tmx_proc_ptran -> cseqmet . len + 1 ; memcpy ( _tmx_proc_ptran -> vbranch . s , svbranch . s , svbranch . len ) ; _tmx_proc_ptran -> vbranch . len = svbranch . len ; _tmx_proc_ptran -> vbranch . s [ _tmx_proc_ptran -> vbranch . len ] = '\\\\0' ; } else { _tmx_proc_ptran -> vbranch . s = NULL ; _tmx_proc_ptran -> vbranch . len = 0 ; } lock_get ( & _tmx_ptran_table [ slotid ] . lock ) ; it = _tmx_ptran_table [ slotid ] . plist ; tmx_pretran_link_safe ( slotid ) ; for ( ; it != NULL ; it = it -> next ) { if ( _tmx_proc_ptran -> hid != it -> hid || _tmx_proc_ptran -> cseqmetid != it -> cseqmetid || _tmx_proc_ptran -> callid . len != it -> callid . len || _tmx_proc_ptran -> ftag . len != it -> ftag . len || _tmx_proc_ptran -> cseqmet . len != it -> cseqmet . len || _tmx_proc_ptran -> cseqnum . len != it -> cseqnum . len ) continue ; if ( _tmx_proc_ptran -> vbranch . s != NULL && it -> vbranch . s != NULL ) { if ( _tmx_proc_ptran -> vbranch . len != it -> vbranch . len ) continue ; if ( _tmx_proc_ptran -> vbranch . s [ it -> vbranch . len - 1 ] != it -> vbranch . s [ it -> vbranch . len - 1 ] ) continue ; if ( memcmp ( _tmx_proc_ptran -> vbranch . s , it -> vbranch . s , it -> vbranch . len ) != 0 ) continue ; } if ( memcmp ( _tmx_proc_ptran -> callid . s , it -> callid . s , it -> callid . len ) != 0 || memcmp ( _tmx_proc_ptran -> ftag . s , it -> ftag . s , it -> ftag . len ) != 0 || memcmp ( _tmx_proc_ptran -> cseqnum . s , it -> cseqnum . s , it -> cseqnum . len ) != 0 ) continue ; if ( ( it -> cseqmetid == METHOD_OTHER || it -> cseqmetid == METHOD_UNDEF ) && memcmp ( _tmx_proc_ptran -> cseqmet . s , it -> cseqmet . s , it -> cseqmet . len ) != 0 ) continue ; LM_DBG ( \"matched<S2SV_blank>another<S2SV_blank>pre-transaction<S2SV_blank>by<S2SV_blank>pid<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>[%.*s]\\\\n\" , it -> pid , it -> callid . len , it -> callid . s ) ; lock_release ( & _tmx_ptran_table [ slotid ] . lock ) ; return 1 ; } lock_release ( & _tmx_ptran_table [ slotid ] . lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svbranch . len + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19824\n\n```\nCWE-416 static int usb_audio_probe ( struct usb_interface * intf , const struct usb_device_id * usb_id ) { struct usb_device * dev = interface_to_usbdev ( intf ) ; const struct snd_usb_audio_quirk * quirk = ( const struct snd_usb_audio_quirk * ) usb_id -> driver_info ; struct snd_usb_audio * chip ; int i , err ; struct usb_host_interface * alts ; int ifnum ; u32 id ; alts = & intf -> altsetting [ 0 ] ; ifnum = get_iface_desc ( alts ) -> bInterfaceNumber ; id = USB_ID ( le16_to_cpu ( dev -> descriptor . idVendor ) , le16_to_cpu ( dev -> descriptor . idProduct ) ) ; if ( get_alias_id ( dev , & id ) ) quirk = get_alias_quirk ( dev , id ) ; if ( quirk && quirk -> ifnum >= 0 && ifnum != quirk -> ifnum ) return - ENXIO ; err = snd_usb_apply_boot_quirk ( dev , intf , quirk , id ) ; if ( err < 0 ) return err ; chip = NULL ; mutex_lock ( & register_mutex ) ; for ( i = 0 ; i < SNDRV_CARDS ; i ++ ) { if ( usb_chip [ i ] && usb_chip [ i ] -> dev == dev ) { if ( atomic_read ( & usb_chip [ i ] -> shutdown ) ) { dev_err ( & dev -> dev , \"USB<S2SV_blank>device<S2SV_blank>is<S2SV_blank>in<S2SV_blank>the<S2SV_blank>shutdown<S2SV_blank>state,<S2SV_blank>cannot<S2SV_blank>create<S2SV_blank>a<S2SV_blank>card<S2SV_blank>instance\\\\n\" ) ; err = - EIO ; goto __error ; } chip = usb_chip [ i ] ; atomic_inc ( & chip -> active ) ; break ; } } if ( ! chip ) { for ( i = 0 ; i < SNDRV_CARDS ; i ++ ) if ( ! usb_chip [ i ] && ( vid [ i ] == - 1 || vid [ i ] == USB_ID_VENDOR ( id ) ) && ( pid [ i ] == - 1 || pid [ i ] == USB_ID_PRODUCT ( id ) ) ) { if ( enable [ i ] ) { err = snd_usb_audio_create ( intf , dev , i , quirk , id , & chip ) ; if ( err < 0 ) goto __error ; chip -> pm_intf = intf ; break ; } else if ( vid [ i ] != - 1 || pid [ i ] != - 1 ) { dev_info ( & dev -> dev , \"device<S2SV_blank>(%04x:%04x)<S2SV_blank>is<S2SV_blank>disabled\\\\n\" , USB_ID_VENDOR ( id ) , USB_ID_PRODUCT ( id ) ) ; err = - ENOENT ; goto __error ; } } if ( ! chip ) { dev_err ( & dev -> dev , \"no<S2SV_blank>available<S2SV_blank>usb<S2SV_blank>audio<S2SV_blank>device\\\\n\" ) ; err = - ENODEV ; goto __error ; } } dev_set_drvdata ( & dev -> dev , chip ) ; if ( ! chip -> ctrl_intf ) chip -> ctrl_intf = alts ; chip -> txfr_quirk = 0 ; err = 1 ; if ( quirk && quirk -> ifnum != QUIRK_NO_INTERFACE ) { err = snd_usb_create_quirk ( chip , intf , & usb_audio_driver , quirk ) ; if ( err < 0 ) goto __error ; } if ( err > 0 ) { err = snd_usb_create_streams ( chip , ifnum ) ; if ( err < 0 ) goto __error ; err = snd_usb_create_mixer ( chip , ifnum , ignore_ctl_error ) ; if ( err < 0 ) goto __error ; } err = snd_card_register ( chip -> card ) ; if ( err < 0 ) goto __error ; usb_chip [ chip -> index ] = chip ; chip -> num_interfaces ++ ; usb_set_intfdata ( intf , chip ) ; atomic_dec ( & chip -> active ) ; mutex_unlock ( & register_mutex ) ; return 0 ; __error : if ( chip ) { <S2SV_StartBug> if ( ! chip -> num_interfaces ) <S2SV_EndBug> snd_card_free ( chip -> card ) ; <S2SV_StartBug> atomic_dec ( & chip -> active ) ; <S2SV_EndBug> } mutex_unlock ( & register_mutex ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> chip ) { atomic_dec ( & chip -> active ) ; <S2SV_ModStart> card ) ; <S2SV_ModEnd> } mutex_unlock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t webSocketParseHeaderField ( WebSocket * webSocket , char_t * line ) { char_t * separator ; char_t * name ; char_t * value ; WebSocketHandshakeContext * handshakeContext ; handshakeContext = & webSocket -> handshakeContext ; TRACE_DEBUG ( \"%s\" , line ) ; <S2SV_StartBug> separator = strchr ( line , ':' ) ; <S2SV_EndBug> if ( separator != NULL ) { * separator = '\\\\0' ; name = strTrimWhitespace ( line ) ; value = strTrimWhitespace ( separator + 1 ) ; if ( ! osStrcasecmp ( name , \"Upgrade\" ) ) { if ( ! osStrcasecmp ( value , \"websocket\" ) ) handshakeContext -> upgradeWebSocket = TRUE ; } else if ( ! osStrcasecmp ( name , \"Connection\" ) ) { webSocketParseConnectionField ( webSocket , value ) ; } else if ( ! osStrcasecmp ( name , \"Sec-WebSocket-Key\" ) ) { if ( webSocket -> endpoint == WS_ENDPOINT_SERVER ) { strSafeCopy ( handshakeContext -> clientKey , value , WEB_SOCKET_CLIENT_KEY_SIZE + 1 ) ; } } else if ( ! osStrcasecmp ( name , \"Sec-WebSocket-Accept\" ) ) { if ( webSocket -> endpoint == WS_ENDPOINT_CLIENT ) { strSafeCopy ( handshakeContext -> serverKey , value , WEB_SOCKET_SERVER_KEY_SIZE + 1 ) ; } } # if ( WEB_SOCKET_BASIC_AUTH_SUPPORT == ENABLED || WEB_SOCKET_DIGEST_AUTH_SUPPORT == ENABLED ) else if ( ! osStrcasecmp ( name , \"WWW-Authenticate\" ) ) { webSocketParseAuthenticateField ( webSocket , value ) ; } # endif else if ( ! osStrcasecmp ( name , \"Content-Length\" ) ) { handshakeContext -> contentLength = osStrtoul ( value , NULL , 10 ) ; } } return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; separator = osStrchr <S2SV_ModEnd> ( line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6537\n\n```\nCWE-200 static int copy_to_user_tmpl ( struct xfrm_policy * xp , struct sk_buff * skb ) { struct xfrm_user_tmpl vec [ XFRM_MAX_DEPTH ] ; int i ; if ( xp -> xfrm_nr == 0 ) return 0 ; for ( i = 0 ; i < xp -> xfrm_nr ; i ++ ) { struct xfrm_user_tmpl * up = & vec [ i ] ; struct xfrm_tmpl * kp = & xp -> xfrm_vec [ i ] ; <S2SV_StartBug> memcpy ( & up -> id , & kp -> id , sizeof ( up -> id ) ) ; <S2SV_EndBug> up -> family = kp -> encap_family ; memcpy ( & up -> saddr , & kp -> saddr , sizeof ( up -> saddr ) ) ; up -> reqid = kp -> reqid ; up -> mode = kp -> mode ; up -> share = kp -> share ; up -> optional = kp -> optional ; up -> aalgos = kp -> aalgos ; up -> ealgos = kp -> ealgos ; up -> calgos = kp -> calgos ; } return nla_put ( skb , XFRMA_TMPL , sizeof ( struct xfrm_user_tmpl ) * xp -> xfrm_nr , vec ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ] ; memset ( up , 0 , sizeof ( * up ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static void encode_share_access ( struct xdr_stream * xdr , int open_flags ) <S2SV_EndBug> { __be32 * p ; RESERVE_SPACE ( 8 ) ; <S2SV_StartBug> switch ( open_flags & ( FMODE_READ | FMODE_WRITE ) ) { <S2SV_EndBug> case FMODE_READ : WRITE32 ( NFS4_SHARE_ACCESS_READ ) ; break ; case FMODE_WRITE : WRITE32 ( NFS4_SHARE_ACCESS_WRITE ) ; break ; case FMODE_READ | FMODE_WRITE : WRITE32 ( NFS4_SHARE_ACCESS_BOTH ) ; break ; default : <S2SV_StartBug> BUG ( ) ; <S2SV_EndBug> } WRITE32 ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * xdr , fmode_t fmode <S2SV_ModEnd> ) { __be32 <S2SV_ModStart> ; switch ( fmode <S2SV_ModEnd> & ( FMODE_READ <S2SV_ModStart> ; default : WRITE32 ( 0 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int load_state_from_tss32 ( struct x86_emulate_ctxt * ctxt , struct tss_segment_32 * tss ) { int ret ; u8 cpl ; if ( ctxt -> ops -> set_cr ( ctxt , 3 , tss -> cr3 ) ) return emulate_gp ( ctxt , 0 ) ; ctxt -> _eip = tss -> eip ; ctxt -> eflags = tss -> eflags | 2 ; * reg_write ( ctxt , VCPU_REGS_RAX ) = tss -> eax ; * reg_write ( ctxt , VCPU_REGS_RCX ) = tss -> ecx ; * reg_write ( ctxt , VCPU_REGS_RDX ) = tss -> edx ; * reg_write ( ctxt , VCPU_REGS_RBX ) = tss -> ebx ; * reg_write ( ctxt , VCPU_REGS_RSP ) = tss -> esp ; * reg_write ( ctxt , VCPU_REGS_RBP ) = tss -> ebp ; * reg_write ( ctxt , VCPU_REGS_RSI ) = tss -> esi ; * reg_write ( ctxt , VCPU_REGS_RDI ) = tss -> edi ; set_segment_selector ( ctxt , tss -> ldt_selector , VCPU_SREG_LDTR ) ; set_segment_selector ( ctxt , tss -> es , VCPU_SREG_ES ) ; set_segment_selector ( ctxt , tss -> cs , VCPU_SREG_CS ) ; set_segment_selector ( ctxt , tss -> ss , VCPU_SREG_SS ) ; set_segment_selector ( ctxt , tss -> ds , VCPU_SREG_DS ) ; set_segment_selector ( ctxt , tss -> fs , VCPU_SREG_FS ) ; set_segment_selector ( ctxt , tss -> gs , VCPU_SREG_GS ) ; if ( ctxt -> eflags & X86_EFLAGS_VM ) { ctxt -> mode = X86EMUL_MODE_VM86 ; cpl = 3 ; } else { ctxt -> mode = X86EMUL_MODE_PROT32 ; cpl = tss -> cs & 3 ; } <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ldt_selector , VCPU_SREG_LDTR , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> es , VCPU_SREG_ES , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> cs , VCPU_SREG_CS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ss , VCPU_SREG_SS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ds , VCPU_SREG_DS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> fs , VCPU_SREG_FS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> gs , VCPU_SREG_GS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , VCPU_SREG_LDTR , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0077\n\n```\nCWE-20 static void handle_rx ( struct vhost_net * net ) { struct vhost_net_virtqueue * nvq = & net -> vqs [ VHOST_NET_VQ_RX ] ; struct vhost_virtqueue * vq = & nvq -> vq ; unsigned uninitialized_var ( in ) , log ; struct vhost_log * vq_log ; struct msghdr msg = { . msg_name = NULL , . msg_namelen = 0 , . msg_control = NULL , . msg_controllen = 0 , . msg_iov = vq -> iov , . msg_flags = MSG_DONTWAIT , } ; struct virtio_net_hdr_mrg_rxbuf hdr = { . hdr . flags = 0 , . hdr . gso_type = VIRTIO_NET_HDR_GSO_NONE } ; size_t total_len = 0 ; int err , mergeable ; s16 headcount ; size_t vhost_hlen , sock_hlen ; size_t vhost_len , sock_len ; struct socket * sock ; mutex_lock ( & vq -> mutex ) ; sock = vq -> private_data ; if ( ! sock ) goto out ; vhost_disable_notify ( & net -> dev , vq ) ; vhost_hlen = nvq -> vhost_hlen ; sock_hlen = nvq -> sock_hlen ; vq_log = unlikely ( vhost_has_feature ( & net -> dev , VHOST_F_LOG_ALL ) ) ? vq -> log : NULL ; mergeable = vhost_has_feature ( & net -> dev , VIRTIO_NET_F_MRG_RXBUF ) ; while ( ( sock_len = peek_head_len ( sock -> sk ) ) ) { sock_len += sock_hlen ; vhost_len = sock_len + vhost_hlen ; headcount = get_rx_bufs ( vq , vq -> heads , vhost_len , & in , vq_log , & log , likely ( mergeable ) ? UIO_MAXIOV : 1 ) ; if ( unlikely ( headcount < 0 ) ) break ; <S2SV_StartBug> if ( ! headcount ) { <S2SV_EndBug> if ( unlikely ( vhost_enable_notify ( & net -> dev , vq ) ) ) { vhost_disable_notify ( & net -> dev , vq ) ; continue ; } break ; } if ( unlikely ( ( vhost_hlen ) ) ) move_iovec_hdr ( vq -> iov , nvq -> hdr , vhost_hlen , in ) ; else copy_iovec_hdr ( vq -> iov , nvq -> hdr , sock_hlen , in ) ; <S2SV_StartBug> msg . msg_iovlen = in ; <S2SV_EndBug> err = sock -> ops -> recvmsg ( NULL , sock , & msg , <S2SV_StartBug> sock_len , MSG_DONTWAIT | MSG_TRUNC ) ; <S2SV_EndBug> <S2SV_StartBug> if ( unlikely ( err != sock_len ) ) { <S2SV_EndBug> pr_debug ( \"Discarded<S2SV_blank>rx<S2SV_blank>packet:<S2SV_blank>\" \"<S2SV_blank>len<S2SV_blank>%d,<S2SV_blank>expected<S2SV_blank>%zd\\\\n\" , err , sock_len ) ; vhost_discard_vq_desc ( vq , headcount ) ; continue ; } if ( unlikely ( vhost_hlen ) && memcpy_toiovecend ( nvq -> hdr , ( unsigned char * ) & hdr , 0 , vhost_hlen ) ) { vq_err ( vq , \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>vnet_hdr<S2SV_blank>at<S2SV_blank>addr<S2SV_blank>%p\\\\n\" , vq -> iov -> iov_base ) ; break ; } if ( likely ( mergeable ) && memcpy_toiovecend ( nvq -> hdr , ( unsigned char * ) & headcount , offsetof ( typeof ( hdr ) , num_buffers ) , sizeof hdr . num_buffers ) ) { vq_err ( vq , \"Failed<S2SV_blank>num_buffers<S2SV_blank>write\" ) ; vhost_discard_vq_desc ( vq , headcount ) ; break ; } vhost_add_used_and_signal_n ( & net -> dev , vq , vq -> heads , headcount ) ; if ( unlikely ( vq_log ) ) vhost_log_write ( vq , vq_log , log , vhost_len ) ; total_len += vhost_len ; if ( unlikely ( total_len >= VHOST_NET_WEIGHT ) ) { vhost_poll_queue ( & vq -> poll ) ; break ; } } out : mutex_unlock ( & vq -> mutex ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( unlikely ( headcount > UIO_MAXIOV ) ) { <S2SV_ModEnd> msg . msg_iovlen <S2SV_ModStart> . msg_iovlen = 1 <S2SV_ModEnd> ; err = <S2SV_ModStart> & msg , 1 <S2SV_ModEnd> , MSG_DONTWAIT | <S2SV_ModStart> MSG_TRUNC ) ; pr_debug ( \"Discarded<S2SV_blank>rx<S2SV_blank>packet:<S2SV_blank>len<S2SV_blank>%zd\\\\n\" , sock_len ) ; continue ; } if ( ! headcount ) { if ( unlikely ( vhost_enable_notify ( & net -> dev , vq ) ) ) { vhost_disable_notify ( & net -> dev , vq ) ; continue ; } break ; } if ( unlikely ( ( vhost_hlen ) ) ) move_iovec_hdr ( vq -> iov , nvq -> hdr , vhost_hlen , in ) ; else copy_iovec_hdr ( vq -> iov , nvq -> hdr , sock_hlen , in ) ; msg . msg_iovlen = in ; err = sock -> ops -> recvmsg ( NULL , sock , & msg , sock_len , MSG_DONTWAIT | MSG_TRUNC ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3353\n\n```\nCWE-119 static int fuse_notify_inval_entry ( struct fuse_conn * fc , unsigned int size , struct fuse_copy_state * cs ) { struct fuse_notify_inval_entry_out outarg ; int err = - ENOMEM ; char * buf ; struct qstr name ; buf = kzalloc ( FUSE_NAME_MAX + 1 , GFP_KERNEL ) ; if ( ! buf ) goto err ; err = - EINVAL ; if ( size < sizeof ( outarg ) ) goto err ; err = fuse_copy_one ( cs , & outarg , sizeof ( outarg ) ) ; if ( err ) goto err ; err = - ENAMETOOLONG ; if ( outarg . namelen > FUSE_NAME_MAX ) goto err ; <S2SV_StartBug> name . name = buf ; <S2SV_EndBug> name . len = outarg . namelen ; <S2SV_StartBug> err = fuse_copy_one ( cs , buf , outarg . namelen + 1 ) ; <S2SV_EndBug> if ( err ) goto err ; fuse_copy_finish ( cs ) ; buf [ outarg . namelen ] = 0 ; name . hash = full_name_hash ( name . name , name . len ) ; down_read ( & fc -> killsb ) ; err = - ENOENT ; if ( fc -> sb ) err = fuse_reverse_inval_entry ( fc -> sb , outarg . parent , & name ) ; up_read ( & fc -> killsb ) ; kfree ( buf ) ; return err ; err : kfree ( buf ) ; fuse_copy_finish ( cs ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto err ; err = - EINVAL ; if ( size != sizeof ( outarg ) + <S2SV_ModEnd> outarg . namelen <S2SV_ModStart> + 1 ) goto err ; name . name = buf ; name . len = outarg . namelen ; err = fuse_copy_one ( cs , buf , outarg . namelen + 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-494(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13083\n\n```\nCWE-494 LONG ValidateSignature ( HWND hDlg , const char * path ) { LONG r ; WINTRUST_DATA trust_data = { 0 } ; WINTRUST_FILE_INFO trust_file = { 0 } ; GUID guid_generic_verify = { 0xaac56b , 0xcd44 , 0x11d0 , { 0x8c , 0xc2 , 0x0 , 0xc0 , 0x4f , 0xc2 , 0x95 , 0xee } } ; char * signature_name ; size_t i , len ; signature_name = GetSignatureName ( path ) ; if ( signature_name == NULL ) { uprintf ( \"PKI:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>signature<S2SV_blank>name\" ) ; MessageBoxExU ( hDlg , lmprintf ( MSG_284 ) , lmprintf ( MSG_283 ) , MB_OK | MB_ICONERROR | MB_IS_RTL , selected_langid ) ; return TRUST_E_NOSIGNATURE ; } for ( i = 0 ; i < ARRAYSIZE ( cert_name ) ; i ++ ) { len = strlen ( cert_name [ i ] ) ; if ( strncmp ( signature_name , cert_name [ i ] , len ) == 0 ) { if ( ( len >= strlen ( signature_name ) ) || isspace ( signature_name [ len ] ) ) break ; } } if ( i >= ARRAYSIZE ( cert_name ) ) { uprintf ( \"PKI:<S2SV_blank>Signature<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>unexpected...\" , signature_name ) ; if ( MessageBoxExU ( hDlg , lmprintf ( MSG_285 , signature_name ) , lmprintf ( MSG_283 ) , MB_YESNO | MB_ICONWARNING | MB_IS_RTL , selected_langid ) != IDYES ) return TRUST_E_EXPLICIT_DISTRUST ; } trust_file . cbStruct = sizeof ( trust_file ) ; trust_file . pcwszFilePath = utf8_to_wchar ( path ) ; if ( trust_file . pcwszFilePath == NULL ) { uprintf ( \"PKI:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>\\'%s\\'<S2SV_blank>to<S2SV_blank>UTF16\" , path ) ; return ERROR_SEVERITY_ERROR | FAC ( FACILITY_CERT ) | ERROR_NOT_ENOUGH_MEMORY ; } trust_data . cbStruct = sizeof ( trust_data ) ; <S2SV_StartBug> trust_data . dwUIChoice = WTD_UI_ALL ; <S2SV_EndBug> trust_data . fdwRevocationChecks = WTD_REVOKE_WHOLECHAIN ; trust_data . dwProvFlags = WTD_REVOCATION_CHECK_CHAIN | 0x400 ; trust_data . dwUnionChoice = WTD_CHOICE_FILE ; trust_data . pFile = & trust_file ; r = WinVerifyTrust ( NULL , & guid_generic_verify , & trust_data ) ; safe_free ( trust_file . pcwszFilePath ) ; <S2SV_StartBug> return r ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . dwUIChoice = WTD_UI_NONE <S2SV_ModEnd> ; trust_data . <S2SV_ModStart> pcwszFilePath ) ; switch ( r ) { case ERROR_SUCCESS : break ; case TRUST_E_NOSIGNATURE : uprintf ( \"PKI:<S2SV_blank>File<S2SV_blank>does<S2SV_blank>not<S2SV_blank>appear<S2SV_blank>to<S2SV_blank>be<S2SV_blank>signed:<S2SV_blank>%s\" , WinPKIErrorString ( ) ) ; MessageBoxExU ( hDlg , lmprintf ( MSG_284 ) , lmprintf ( MSG_283 ) , MB_OK | MB_ICONERROR | MB_IS_RTL , selected_langid ) ; break ; default : uprintf ( \"PKI:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>validate<S2SV_blank>signature:<S2SV_blank>%s\" , WinPKIErrorString ( ) ) ; MessageBoxExU ( hDlg , lmprintf ( MSG_240 ) , lmprintf ( MSG_283 ) , MB_OK | MB_ICONERROR | MB_IS_RTL , selected_langid ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 static void * bpf_any_get ( void * raw , enum bpf_type type ) { switch ( type ) { case BPF_TYPE_PROG : <S2SV_StartBug> atomic_inc ( & ( ( struct bpf_prog * ) raw ) -> aux -> refcnt ) ; <S2SV_EndBug> break ; case BPF_TYPE_MAP : <S2SV_StartBug> bpf_map_inc ( raw , true ) ; <S2SV_EndBug> break ; default : WARN_ON_ONCE ( 1 ) ; break ; } return raw ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case BPF_TYPE_PROG : raw = bpf_prog_inc ( raw <S2SV_ModEnd> ) ; break <S2SV_ModStart> case BPF_TYPE_MAP : raw =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8865\n\n```\nCWE-119 protected int file_check_mem ( struct magic_set * ms , unsigned int level ) { size_t len ; if ( level >= ms -> c . len ) { <S2SV_StartBug> len = ( ms -> c . len += 20 ) * sizeof ( * ms -> c . li ) ; <S2SV_EndBug> ms -> c . li = CAST ( struct level_info * , ( ms -> c . li == NULL ) ? malloc ( len ) : realloc ( ms -> c . li , len ) ) ; if ( ms -> c . li == NULL ) { file_oomem ( ms , len ) ; return - 1 ; } } ms -> c . li [ level ] . got_match = 0 ; # ifdef ENABLE_CONDITIONALS ms -> c . li [ level ] . last_match = 0 ; ms -> c . li [ level ] . last_cond = COND_NONE ; # endif return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c . len = 20 + level <S2SV_ModEnd> ) * sizeof\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35517\n\n```\nCWE-269 static void setup_namespaces ( struct lo_data * lo , struct fuse_session * se ) { <S2SV_StartBug> pid_t child ; <S2SV_EndBug> char template [ ] = \"virtiofsd-XXXXXX\" ; char * tmpdir ; if ( unshare ( CLONE_NEWPID | CLONE_NEWNS | CLONE_NEWNET ) != 0 ) { fuse_log ( FUSE_LOG_ERR , \"unshare(CLONE_NEWPID<S2SV_blank>|<S2SV_blank>CLONE_NEWNS):<S2SV_blank>%m\\\\n\" ) ; exit ( 1 ) ; } child = fork ( ) ; if ( child < 0 ) { fuse_log ( FUSE_LOG_ERR , \"fork()<S2SV_blank>failed:<S2SV_blank>%m\\\\n\" ) ; exit ( 1 ) ; } if ( child > 0 ) { pid_t waited ; int wstatus ; setup_wait_parent_capabilities ( ) ; do { waited = waitpid ( child , & wstatus , 0 ) ; } while ( waited < 0 && errno == EINTR && ! se -> exited ) ; if ( se -> exited ) { exit ( 0 ) ; } if ( WIFEXITED ( wstatus ) ) { exit ( WEXITSTATUS ( wstatus ) ) ; } exit ( 1 ) ; } prctl ( PR_SET_PDEATHSIG , SIGTERM ) ; if ( mount ( NULL , \"/\" , NULL , MS_REC | MS_SLAVE , NULL ) < 0 ) { fuse_log ( FUSE_LOG_ERR , \"mount(/,<S2SV_blank>MS_REC|MS_SLAVE):<S2SV_blank>%m\\\\n\" ) ; exit ( 1 ) ; } if ( mount ( \"proc\" , \"/proc\" , \"proc\" , MS_NODEV | MS_NOEXEC | MS_NOSUID | MS_RELATIME , NULL ) < 0 ) { fuse_log ( FUSE_LOG_ERR , \"mount(/proc):<S2SV_blank>%m\\\\n\" ) ; exit ( 1 ) ; } <S2SV_StartBug> tmpdir = mkdtemp ( template ) ; <S2SV_EndBug> if ( ! tmpdir ) { fuse_log ( FUSE_LOG_ERR , \"tmpdir(%s):<S2SV_blank>%m\\\\n\" , template ) ; exit ( 1 ) ; } <S2SV_StartBug> if ( mount ( \"/proc/self/fd\" , tmpdir , NULL , MS_BIND , NULL ) < 0 ) { <S2SV_EndBug> <S2SV_StartBug> fuse_log ( FUSE_LOG_ERR , \"mount(/proc/self/fd,<S2SV_blank>%s,<S2SV_blank>MS_BIND):<S2SV_blank>%m\\\\n\" , <S2SV_EndBug> tmpdir ) ; exit ( 1 ) ; } <S2SV_StartBug> lo -> proc_self_fd = open ( tmpdir , O_PATH ) ; <S2SV_EndBug> if ( lo -> proc_self_fd == - 1 ) { <S2SV_StartBug> fuse_log ( FUSE_LOG_ERR , \"open(%s,<S2SV_blank>O_PATH):<S2SV_blank>%m\\\\n\" , tmpdir ) ; <S2SV_EndBug> exit ( 1 ) ; } if ( umount2 ( tmpdir , MNT_DETACH ) < 0 ) { fuse_log ( FUSE_LOG_ERR , \"umount2(%s,<S2SV_blank>MNT_DETACH):<S2SV_blank>%m\\\\n\" , tmpdir ) ; exit ( 1 ) ; } if ( rmdir ( tmpdir ) < 0 ) { fuse_log ( FUSE_LOG_ERR , \"rmdir(%s):<S2SV_blank>%m\\\\n\" , tmpdir ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { pid_t child <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ; } <S2SV_ModEnd> if ( mount <S2SV_ModStart> ( \"/proc/self/fd\" , \"/proc\" <S2SV_ModEnd> , NULL , <S2SV_ModStart> ( FUSE_LOG_ERR , \"mount(/proc/self/fd,<S2SV_blank>MS_BIND):<S2SV_blank>%m\\\\n\" <S2SV_ModEnd> ) ; exit <S2SV_ModStart> = open ( \"/proc\" <S2SV_ModEnd> , O_PATH ) <S2SV_ModStart> ( FUSE_LOG_ERR , \"open(/proc,<S2SV_blank>O_PATH):<S2SV_blank>%m\\\\n\" ) ; exit ( 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int y4m_input_fetch_frame ( y4m_input * _y4m , FILE * _fin , vpx_image_t * _img ) { char frame [ 6 ] ; int pic_sz ; int c_w ; int c_h ; <S2SV_StartBug> int c_sz ; <S2SV_EndBug> if ( ! file_read ( frame , 6 , _fin ) ) return 0 ; if ( memcmp ( frame , \"FRAME\" , 5 ) ) { fprintf ( stderr , \"Loss<S2SV_blank>of<S2SV_blank>framing<S2SV_blank>in<S2SV_blank>Y4M<S2SV_blank>input<S2SV_blank>data\\\\n\" ) ; return - 1 ; } if ( frame [ 5 ] != '\\\\n' ) { char c ; int j ; for ( j = 0 ; j < 79 && file_read ( & c , 1 , _fin ) && c != '\\\\n' ; j ++ ) { } if ( j == 79 ) { fprintf ( stderr , \"Error<S2SV_blank>parsing<S2SV_blank>Y4M<S2SV_blank>frame<S2SV_blank>header\\\\n\" ) ; return - 1 ; } } if ( ! file_read ( _y4m -> dst_buf , _y4m -> dst_buf_read_sz , _fin ) ) { fprintf ( stderr , \"Error<S2SV_blank>reading<S2SV_blank>Y4M<S2SV_blank>frame<S2SV_blank>data.\\\\n\" ) ; return - 1 ; } if ( ! file_read ( _y4m -> aux_buf , _y4m -> aux_buf_read_sz , _fin ) ) { fprintf ( stderr , \"Error<S2SV_blank>reading<S2SV_blank>Y4M<S2SV_blank>frame<S2SV_blank>data.\\\\n\" ) ; return - 1 ; } ( * _y4m -> convert ) ( _y4m , _y4m -> dst_buf , _y4m -> aux_buf ) ; memset ( _img , 0 , sizeof ( * _img ) ) ; _img -> fmt = _y4m -> vpx_fmt ; _img -> w = _img -> d_w = _y4m -> pic_w ; _img -> h = _img -> d_h = _y4m -> pic_h ; _img -> x_chroma_shift = _y4m -> dst_c_dec_h >> 1 ; _img -> y_chroma_shift = _y4m -> dst_c_dec_v >> 1 ; <S2SV_StartBug> _img -> bps = _y4m -> vpx_bps ; <S2SV_EndBug> <S2SV_StartBug> pic_sz = _y4m -> pic_w * _y4m -> pic_h ; <S2SV_EndBug> c_w = ( _y4m -> pic_w + _y4m -> dst_c_dec_h - 1 ) / _y4m -> dst_c_dec_h ; <S2SV_StartBug> c_h = ( _y4m -> pic_h + _y4m -> dst_c_dec_v - 1 ) / _y4m -> dst_c_dec_v ; <S2SV_EndBug> c_sz = c_w * c_h ; <S2SV_StartBug> _img -> stride [ PLANE_Y ] = _img -> stride [ PLANE_ALPHA ] = _y4m -> pic_w ; <S2SV_EndBug> <S2SV_StartBug> _img -> stride [ PLANE_U ] = _img -> stride [ PLANE_V ] = c_w ; <S2SV_EndBug> <S2SV_StartBug> _img -> planes [ PLANE_Y ] = _y4m -> dst_buf ; <S2SV_EndBug> <S2SV_StartBug> _img -> planes [ PLANE_U ] = _y4m -> dst_buf + pic_sz ; <S2SV_EndBug> <S2SV_StartBug> _img -> planes [ PLANE_V ] = _y4m -> dst_buf + pic_sz + c_sz ; <S2SV_EndBug> <S2SV_StartBug> _img -> planes [ PLANE_ALPHA ] = _y4m -> dst_buf + pic_sz + 2 * c_sz ; <S2SV_EndBug> return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int c_sz ; int bytes_per_sample = _y4m -> bit_depth > 8 ? 2 : 1 <S2SV_ModStart> = _y4m -> bps <S2SV_ModEnd> ; pic_sz = <S2SV_ModStart> _y4m -> pic_h * bytes_per_sample <S2SV_ModStart> -> dst_c_dec_h ; c_w *= bytes_per_sample ; <S2SV_ModStart> -> stride [ VPX_PLANE_Y <S2SV_ModEnd> ] = _img <S2SV_ModStart> -> stride [ VPX_PLANE_ALPHA ] = <S2SV_ModEnd> _y4m -> pic_w <S2SV_ModStart> _y4m -> pic_w * bytes_per_sample <S2SV_ModStart> -> stride [ VPX_PLANE_U <S2SV_ModEnd> ] = _img <S2SV_ModStart> -> stride [ VPX_PLANE_V <S2SV_ModEnd> ] = c_w <S2SV_ModStart> -> planes [ VPX_PLANE_Y <S2SV_ModEnd> ] = _y4m <S2SV_ModStart> -> planes [ VPX_PLANE_U <S2SV_ModEnd> ] = _y4m <S2SV_ModStart> -> planes [ VPX_PLANE_V <S2SV_ModEnd> ] = _y4m <S2SV_ModStart> -> planes [ VPX_PLANE_ALPHA <S2SV_ModEnd> ] = _y4m\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8071\n\n```\nCWE-404 static int cp2112_gpio_direction_input ( struct gpio_chip * chip , unsigned offset ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> int ret ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_GET_REPORT ) ; if ( ret != CP2112_GPIO_CONFIG_LENGTH ) { hid_err ( hdev , \"error<S2SV_blank>requesting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto exit ; } buf [ 1 ] &= ~ ( 1 << offset ) ; buf [ 2 ] = gpio_push_pull ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_SET_REPORT ) ; if ( ret < 0 ) { hid_err ( hdev , \"error<S2SV_blank>setting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto exit ; } ret = 0 ; exit : <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> return ret <= 0 ? ret : - EIO ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> in_out_buffer ; <S2SV_ModEnd> int ret ; <S2SV_ModStart> int ret ; mutex_lock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; ret <S2SV_ModStart> ; exit : mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7527\n\n```\nCWE-125 static Image * ExtractPostscript ( Image * image , const ImageInfo * image_info , MagickOffsetType PS_Offset , ssize_t PS_Size , ExceptionInfo * exception ) { char postscript_file [ MaxTextExtent ] ; const MagicInfo * magic_info ; FILE * ps_file ; ImageInfo * clone_info ; Image * image2 ; unsigned char magick [ 2 * MaxTextExtent ] ; if ( ( clone_info = CloneImageInfo ( image_info ) ) == NULL ) return ( image ) ; clone_info -> blob = ( void * ) NULL ; clone_info -> length = 0 ; ( void ) AcquireUniqueFilename ( postscript_file ) ; ps_file = fopen_utf8 ( postscript_file , \"wb\" ) ; if ( ps_file == ( FILE * ) NULL ) goto FINISH ; ( void ) SeekBlob ( image , PS_Offset , SEEK_SET ) ; ( void ) ReadBlob ( image , 2 * MaxTextExtent , magick ) ; ( void ) SeekBlob ( image , PS_Offset , SEEK_SET ) ; while ( PS_Size -- > 0 ) { ( void ) fputc ( ReadBlobByte ( image ) , ps_file ) ; } ( void ) fclose ( ps_file ) ; magic_info = GetMagicInfo ( magick , 2 * MaxTextExtent , exception ) ; if ( magic_info == ( const MagicInfo * ) NULL ) goto FINISH_UNL ; if ( exception -> severity != UndefinedException ) goto FINISH_UNL ; if ( magic_info -> name == ( char * ) NULL ) goto FINISH_UNL ; <S2SV_StartBug> ( void ) CopyMagickMemory ( clone_info -> magick , magic_info -> name , MaxTextExtent ) ; <S2SV_EndBug> FormatLocaleString ( clone_info -> filename , MaxTextExtent , \"%s\" , postscript_file ) ; image2 = ReadImage ( clone_info , exception ) ; if ( ! image2 ) goto FINISH_UNL ; ( void ) CopyMagickMemory ( image2 -> filename , image -> filename , MaxTextExtent ) ; ( void ) CopyMagickMemory ( image2 -> magick_filename , image -> magick_filename , MaxTextExtent ) ; ( void ) CopyMagickMemory ( image2 -> magick , image -> magick , MaxTextExtent ) ; image2 -> depth = image -> depth ; DestroyBlob ( image2 ) ; image2 -> blob = ReferenceBlob ( image -> blob ) ; if ( ( image -> rows == 0 ) || ( image -> columns == 0 ) ) DeleteImageFromList ( & image ) ; AppendImageToList ( & image , image2 ) ; FINISH_UNL : ( void ) RelinquishUniqueFileResource ( postscript_file ) ; FINISH : DestroyImageInfo ( clone_info ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( void ) strncpy <S2SV_ModEnd> ( clone_info ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8071\n\n```\nCWE-404 static int cp2112_gpio_direction_input ( struct gpio_chip * chip , unsigned offset ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> int ret ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_GET_REPORT ) ; if ( ret != CP2112_GPIO_CONFIG_LENGTH ) { hid_err ( hdev , \"error<S2SV_blank>requesting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto exit ; } buf [ 1 ] &= ~ ( 1 << offset ) ; buf [ 2 ] = gpio_push_pull ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_CONFIG , buf , CP2112_GPIO_CONFIG_LENGTH , HID_FEATURE_REPORT , HID_REQ_SET_REPORT ) ; if ( ret < 0 ) { hid_err ( hdev , \"error<S2SV_blank>setting<S2SV_blank>GPIO<S2SV_blank>config:<S2SV_blank>%d\\\\n\" , ret ) ; goto exit ; } ret = 0 ; exit : <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> return ret <= 0 ? ret : - EIO ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> in_out_buffer ; <S2SV_ModEnd> int ret ; <S2SV_ModStart> int ret ; mutex_lock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; ret <S2SV_ModStart> ; exit : mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1334\n\n```\nCWE-17 int lxc_attach ( const char * name , const char * lxcpath , lxc_attach_exec_t exec_function , void * exec_payload , lxc_attach_options_t * options , pid_t * attached_process ) { int ret , status ; pid_t init_pid , pid , attached_pid , expected ; struct lxc_proc_context_info * init_ctx ; char * cwd ; char * new_cwd ; int ipc_sockets [ 2 ] ; <S2SV_StartBug> signed long personality ; <S2SV_EndBug> if ( ! options ) options = & attach_static_default_options ; init_pid = lxc_cmd_get_init_pid ( name , lxcpath ) ; if ( init_pid < 0 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>the<S2SV_blank>init<S2SV_blank>pid\" ) ; return - 1 ; } init_ctx = lxc_proc_get_context_info ( init_pid ) ; if ( ! init_ctx ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>context<S2SV_blank>of<S2SV_blank>the<S2SV_blank>init<S2SV_blank>process,<S2SV_blank>pid<S2SV_blank>=<S2SV_blank>%ld\" , ( long ) init_pid ) ; return - 1 ; } personality = get_personality ( name , lxcpath ) ; if ( init_ctx -> personality < 0 ) { ERROR ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>personality<S2SV_blank>of<S2SV_blank>the<S2SV_blank>container\" ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } init_ctx -> personality = personality ; if ( ! fetch_seccomp ( name , lxcpath , init_ctx , options ) ) WARN ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>seccomp<S2SV_blank>policy\" ) ; cwd = getcwd ( NULL , 0 ) ; if ( options -> namespaces == - 1 ) { options -> namespaces = lxc_cmd_get_clone_flags ( name , lxcpath ) ; if ( options -> namespaces == - 1 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>automatically<S2SV_blank>determine<S2SV_blank>the<S2SV_blank>\" \"namespaces<S2SV_blank>which<S2SV_blank>the<S2SV_blank>container<S2SV_blank>unshared\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } } ret = socketpair ( PF_LOCAL , SOCK_STREAM | SOCK_CLOEXEC , 0 , ipc_sockets ) ; if ( ret < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>up<S2SV_blank>required<S2SV_blank>IPC<S2SV_blank>mechanism<S2SV_blank>for<S2SV_blank>attaching\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } pid = fork ( ) ; if ( pid < 0 ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>first<S2SV_blank>subprocess\" ) ; free ( cwd ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } if ( pid ) { pid_t to_cleanup_pid = pid ; close ( ipc_sockets [ 1 ] ) ; free ( cwd ) ; if ( options -> attach_flags & LXC_ATTACH_MOVE_TO_CGROUP ) { if ( ! cgroup_attach ( name , lxcpath , pid ) ) goto cleanup_error ; } status = 0 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" ) ; goto cleanup_error ; } ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & attached_pid , sizeof ( attached_pid ) , NULL ) ; if ( ret <= 0 ) { if ( ret != 0 ) ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>attached<S2SV_blank>process\" ) ; goto cleanup_error ; } if ( options -> stdin_fd == 0 ) { signal ( SIGINT , SIG_IGN ) ; signal ( SIGQUIT , SIG_IGN ) ; } ret = wait_for_pid ( pid ) ; if ( ret < 0 ) goto cleanup_error ; to_cleanup_pid = attached_pid ; status = 0 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(0)\" ) ; goto cleanup_error ; } expected = 1 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 0 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { if ( ret != 0 ) ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>(1)\" ) ; goto cleanup_error ; } status = 2 ; ret = lxc_write_nointr ( ipc_sockets [ 0 ] , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>attached<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(2)\" ) ; goto cleanup_error ; } shutdown ( ipc_sockets [ 0 ] , SHUT_RDWR ) ; close ( ipc_sockets [ 0 ] ) ; lxc_proc_put_context_info ( init_ctx ) ; * attached_process = attached_pid ; return 0 ; cleanup_error : shutdown ( ipc_sockets [ 0 ] , SHUT_RDWR ) ; close ( ipc_sockets [ 0 ] ) ; if ( to_cleanup_pid ) ( void ) wait_for_pid ( to_cleanup_pid ) ; lxc_proc_put_context_info ( init_ctx ) ; return - 1 ; } close ( ipc_sockets [ 0 ] ) ; expected = 0 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_sockets [ 1 ] , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { ERROR ( \"error<S2SV_blank>communicating<S2SV_blank>with<S2SV_blank>child<S2SV_blank>process\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } <S2SV_StartBug> ret = lxc_attach_to_ns ( init_pid , options -> namespaces ) ; <S2SV_EndBug> if ( ret < 0 ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>enter<S2SV_blank>the<S2SV_blank>namespace\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( options -> initial_cwd ) new_cwd = options -> initial_cwd ; else new_cwd = cwd ; ret = chdir ( new_cwd ) ; if ( ret < 0 ) WARN ( \"could<S2SV_blank>not<S2SV_blank>change<S2SV_blank>directory<S2SV_blank>to<S2SV_blank>\\'%s\\'\" , new_cwd ) ; free ( cwd ) ; { struct attach_clone_payload payload = { . ipc_socket = ipc_sockets [ 1 ] , . options = options , . init_ctx = init_ctx , . exec_function = exec_function , <S2SV_StartBug> . exec_payload = exec_payload <S2SV_EndBug> } ; pid = lxc_clone ( attach_child_main , & payload , CLONE_PARENT ) ; } if ( pid <= 0 ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>subprocess\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } ret = lxc_write_nointr ( ipc_sockets [ 1 ] , & pid , sizeof ( pid ) ) ; if ( ret != sizeof ( pid ) ) { ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>main<S2SV_blank>process<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>of<S2SV_blank>the<S2SV_blank>attached<S2SV_blank>process\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } rexit ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 2 ] ; int procfd ; <S2SV_ModStart> ) ; } procfd = open ( \"/proc\" , O_DIRECTORY | O_RDONLY ) ; if ( procfd < 0 ) { SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>/proc\" ) ; shutdown ( ipc_sockets [ 1 ] , SHUT_RDWR ) ; rexit ( - 1 ) ; } <S2SV_ModStart> exec_payload = exec_payload , . procfd = procfd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0642\n\n```\nCWE-000 IHEVCD_ERROR_T ihevcd_parse_slice_header ( codec_t * ps_codec , nal_header_t * ps_nal ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; WORD32 value ; <S2SV_StartBug> WORD32 i ; <S2SV_EndBug> WORD32 sps_id ; pps_t * ps_pps ; sps_t * ps_sps ; slice_header_t * ps_slice_hdr ; WORD32 disable_deblocking_filter_flag ; bitstrm_t * ps_bitstrm = & ps_codec -> s_parse . s_bitstrm ; WORD32 idr_pic_flag ; WORD32 pps_id ; WORD32 first_slice_in_pic_flag ; WORD32 no_output_of_prior_pics_flag = 0 ; WORD8 i1_nal_unit_type = ps_nal -> i1_nal_unit_type ; WORD32 num_poc_total_curr = 0 ; WORD32 slice_address ; if ( ps_codec -> i4_slice_error == 1 ) return ret ; idr_pic_flag = ( NAL_IDR_W_LP == i1_nal_unit_type ) || ( NAL_IDR_N_LP == i1_nal_unit_type ) ; BITS_PARSE ( \"first_slice_in_pic_flag\" , first_slice_in_pic_flag , ps_bitstrm , 1 ) ; if ( ( NAL_BLA_W_LP <= i1_nal_unit_type ) && ( NAL_RSV_RAP_VCL23 >= i1_nal_unit_type ) ) { BITS_PARSE ( \"no_output_of_prior_pics_flag\" , no_output_of_prior_pics_flag , ps_bitstrm , 1 ) ; } UEV_PARSE ( \"pic_parameter_set_id\" , pps_id , ps_bitstrm ) ; pps_id = CLIP3 ( pps_id , 0 , MAX_PPS_CNT - 2 ) ; ps_pps = ps_codec -> s_parse . ps_pps_base + pps_id ; if ( 0 == ps_pps -> i1_pps_valid ) { pps_t * ps_pps_ref = ps_codec -> ps_pps_base ; while ( 0 == ps_pps_ref -> i1_pps_valid ) ps_pps_ref ++ ; if ( ( ps_pps_ref - ps_codec -> ps_pps_base >= MAX_PPS_CNT - 1 ) ) return IHEVCD_INVALID_HEADER ; ihevcd_copy_pps ( ps_codec , pps_id , ps_pps_ref -> i1_pps_id ) ; } sps_id = ps_pps -> i1_sps_id ; ps_sps = ps_codec -> s_parse . ps_sps_base + sps_id ; if ( ( 0 != ps_codec -> u4_pic_cnt || ps_codec -> i4_pic_present ) && first_slice_in_pic_flag ) { if ( ps_codec -> i4_pic_present ) { slice_header_t * ps_slice_hdr_next ; ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = 0 ; ps_slice_hdr_next -> i2_ctb_y = ps_codec -> s_parse . ps_sps -> i2_pic_ht_in_ctb ; return ret ; } else { ps_codec -> i4_slice_error = 0 ; } } if ( first_slice_in_pic_flag ) { ps_codec -> s_parse . i4_cur_slice_idx = 0 ; } else { if ( 0 == ps_codec -> i4_pic_present ) ps_codec -> s_parse . i4_cur_slice_idx = 1 ; } ps_slice_hdr = ps_codec -> s_parse . ps_slice_hdr_base + ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ; if ( ( ps_pps -> i1_dependent_slice_enabled_flag ) && ( ! first_slice_in_pic_flag ) ) { BITS_PARSE ( \"dependent_slice_flag\" , value , ps_bitstrm , 1 ) ; if ( value && ( ps_codec -> s_parse . i4_cur_slice_idx > 0 ) ) { ihevcd_copy_slice_hdr ( ps_codec , ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) , ( ( ps_codec -> s_parse . i4_cur_slice_idx - 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ) ; } ps_slice_hdr -> i1_dependent_slice_flag = value ; } else { ps_slice_hdr -> i1_dependent_slice_flag = 0 ; } ps_slice_hdr -> i1_nal_unit_type = i1_nal_unit_type ; ps_slice_hdr -> i1_pps_id = pps_id ; ps_slice_hdr -> i1_first_slice_in_pic_flag = first_slice_in_pic_flag ; ps_slice_hdr -> i1_no_output_of_prior_pics_flag = 1 ; if ( ( NAL_BLA_W_LP <= i1_nal_unit_type ) && ( NAL_RSV_RAP_VCL23 >= i1_nal_unit_type ) ) { ps_slice_hdr -> i1_no_output_of_prior_pics_flag = no_output_of_prior_pics_flag ; } ps_slice_hdr -> i1_pps_id = pps_id ; if ( ! ps_slice_hdr -> i1_first_slice_in_pic_flag ) { WORD32 num_bits ; num_bits = 32 - CLZ ( ps_sps -> i4_pic_size_in_ctb - 1 ) ; BITS_PARSE ( \"slice_address\" , value , ps_bitstrm , num_bits ) ; slice_address = value ; if ( value >= ps_sps -> i4_pic_size_in_ctb ) return IHEVCD_IGNORE_SLICE ; } else { slice_address = 0 ; } if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_slice_hdr -> i1_pic_output_flag = 1 ; ps_slice_hdr -> i4_pic_order_cnt_lsb = 0 ; ps_slice_hdr -> i1_num_long_term_sps = 0 ; ps_slice_hdr -> i1_num_long_term_pics = 0 ; for ( i = 0 ; i < ps_pps -> i1_num_extra_slice_header_bits ; i ++ ) { BITS_PARSE ( \"slice_reserved_undetermined_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; } UEV_PARSE ( \"slice_type\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_type = value ; if ( ( ps_slice_hdr -> i1_nal_unit_type >= NAL_BLA_W_LP ) && ( ps_slice_hdr -> i1_nal_unit_type <= NAL_RSV_RAP_VCL23 ) ) ps_slice_hdr -> i1_slice_type = ISLICE ; if ( ( ps_slice_hdr -> i1_slice_type < 0 ) || ( ps_slice_hdr -> i1_slice_type > 2 ) ) return IHEVCD_IGNORE_SLICE ; if ( ps_pps -> i1_output_flag_present_flag ) { BITS_PARSE ( \"pic_output_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_pic_output_flag = value ; } ps_slice_hdr -> i1_colour_plane_id = 0 ; if ( 1 == ps_sps -> i1_separate_colour_plane_flag ) { BITS_PARSE ( \"colour_plane_id\" , value , ps_bitstrm , 2 ) ; ps_slice_hdr -> i1_colour_plane_id = value ; } ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag = 0 ; if ( ! idr_pic_flag ) { WORD32 st_rps_idx ; WORD32 num_neg_pics ; WORD32 num_pos_pics ; WORD8 * pi1_used ; BITS_PARSE ( \"pic_order_cnt_lsb\" , value , ps_bitstrm , ps_sps -> i1_log2_max_pic_order_cnt_lsb ) ; ps_slice_hdr -> i4_pic_order_cnt_lsb = value ; BITS_PARSE ( \"short_term_ref_pic_set_sps_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_short_term_ref_pic_set_sps_flag = value ; if ( 1 == ps_slice_hdr -> i1_short_term_ref_pic_set_sps_flag ) { WORD32 numbits ; ps_slice_hdr -> i1_short_term_ref_pic_set_idx = 0 ; if ( ps_sps -> i1_num_short_term_ref_pic_sets > 1 ) { numbits = 32 - CLZ ( ps_sps -> i1_num_short_term_ref_pic_sets - 1 ) ; BITS_PARSE ( \"short_term_ref_pic_set_idx\" , value , ps_bitstrm , numbits ) ; ps_slice_hdr -> i1_short_term_ref_pic_set_idx = value ; } st_rps_idx = ps_slice_hdr -> i1_short_term_ref_pic_set_idx ; num_neg_pics = ps_sps -> as_stref_picset [ st_rps_idx ] . i1_num_neg_pics ; num_pos_pics = ps_sps -> as_stref_picset [ st_rps_idx ] . i1_num_pos_pics ; pi1_used = ps_sps -> as_stref_picset [ st_rps_idx ] . ai1_used ; } else { ihevcd_short_term_ref_pic_set ( ps_bitstrm , & ps_sps -> as_stref_picset [ 0 ] , ps_sps -> i1_num_short_term_ref_pic_sets , ps_sps -> i1_num_short_term_ref_pic_sets , & ps_slice_hdr -> s_stref_picset ) ; st_rps_idx = ps_sps -> i1_num_short_term_ref_pic_sets ; num_neg_pics = ps_slice_hdr -> s_stref_picset . i1_num_neg_pics ; num_pos_pics = ps_slice_hdr -> s_stref_picset . i1_num_pos_pics ; pi1_used = ps_slice_hdr -> s_stref_picset . ai1_used ; } if ( ps_sps -> i1_long_term_ref_pics_present_flag ) { if ( ps_sps -> i1_num_long_term_ref_pics_sps > 0 ) { UEV_PARSE ( \"num_long_term_sps\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_long_term_sps = value ; ps_slice_hdr -> i1_num_long_term_sps = CLIP3 ( ps_slice_hdr -> i1_num_long_term_sps , 0 , MAX_DPB_SIZE - num_neg_pics - num_pos_pics ) ; } UEV_PARSE ( \"num_long_term_pics\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_long_term_pics = value ; ps_slice_hdr -> i1_num_long_term_pics = CLIP3 ( ps_slice_hdr -> i1_num_long_term_pics , 0 , MAX_DPB_SIZE - num_neg_pics - num_pos_pics - ps_slice_hdr -> i1_num_long_term_sps ) ; for ( i = 0 ; i < ( ps_slice_hdr -> i1_num_long_term_sps + ps_slice_hdr -> i1_num_long_term_pics ) ; i ++ ) { if ( i < ps_slice_hdr -> i1_num_long_term_sps ) { WORD32 num_bits = 32 - CLZ ( ps_sps -> i1_num_long_term_ref_pics_sps ) ; BITS_PARSE ( \"lt_idx_sps[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , num_bits ) ; ps_slice_hdr -> ai4_poc_lsb_lt [ i ] = ps_sps -> ai1_lt_ref_pic_poc_lsb_sps [ value ] ; ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] = ps_sps -> ai1_used_by_curr_pic_lt_sps_flag [ value ] ; } else { BITS_PARSE ( \"poc_lsb_lt[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , ps_sps -> i1_log2_max_pic_order_cnt_lsb ) ; ps_slice_hdr -> ai4_poc_lsb_lt [ i ] = value ; BITS_PARSE ( \"used_by_curr_pic_lt_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] = value ; } BITS_PARSE ( \"delta_poc_msb_present_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> ai1_delta_poc_msb_present_flag [ i ] = value ; ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] = 0 ; if ( ps_slice_hdr -> ai1_delta_poc_msb_present_flag [ i ] ) { UEV_PARSE ( \"delata_poc_msb_cycle_lt[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm ) ; ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] = value ; } if ( ( i != 0 ) && ( i != ps_slice_hdr -> i1_num_long_term_sps ) ) { ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i ] += ps_slice_hdr -> ai1_delta_poc_msb_cycle_lt [ i - 1 ] ; } } } for ( i = 0 ; i < num_neg_pics + num_pos_pics ; i ++ ) { if ( pi1_used [ i ] ) { num_poc_total_curr ++ ; } } for ( i = 0 ; i < ps_slice_hdr -> i1_num_long_term_sps + ps_slice_hdr -> i1_num_long_term_pics ; i ++ ) { if ( ps_slice_hdr -> ai1_used_by_curr_pic_lt_flag [ i ] ) { num_poc_total_curr ++ ; } } if ( ps_sps -> i1_sps_temporal_mvp_enable_flag ) { BITS_PARSE ( \"enable_temporal_mvp_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag = value ; } } ps_slice_hdr -> i1_slice_sao_luma_flag = 0 ; ps_slice_hdr -> i1_slice_sao_chroma_flag = 0 ; if ( ps_sps -> i1_sample_adaptive_offset_enabled_flag ) { BITS_PARSE ( \"slice_sao_luma_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_sao_luma_flag = value ; BITS_PARSE ( \"slice_sao_chroma_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_sao_chroma_flag = value ; } ps_slice_hdr -> i1_max_num_merge_cand = 1 ; ps_slice_hdr -> i1_cabac_init_flag = 0 ; ps_slice_hdr -> i1_num_ref_idx_l0_active = 0 ; ps_slice_hdr -> i1_num_ref_idx_l1_active = 0 ; ps_slice_hdr -> i1_slice_cb_qp_offset = 0 ; ps_slice_hdr -> i1_slice_cr_qp_offset = 0 ; if ( ( PSLICE == ps_slice_hdr -> i1_slice_type ) || ( BSLICE == ps_slice_hdr -> i1_slice_type ) ) { BITS_PARSE ( \"num_ref_idx_active_override_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_num_ref_idx_active_override_flag = value ; if ( ps_slice_hdr -> i1_num_ref_idx_active_override_flag ) { UEV_PARSE ( \"num_ref_idx_l0_active_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_ref_idx_l0_active = value + 1 ; if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { UEV_PARSE ( \"num_ref_idx_l1_active_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_num_ref_idx_l1_active = value + 1 ; } } else { ps_slice_hdr -> i1_num_ref_idx_l0_active = ps_pps -> i1_num_ref_idx_l0_default_active ; if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { ps_slice_hdr -> i1_num_ref_idx_l1_active = ps_pps -> i1_num_ref_idx_l1_default_active ; } } ps_slice_hdr -> i1_num_ref_idx_l0_active = CLIP3 ( ps_slice_hdr -> i1_num_ref_idx_l0_active , 0 , MAX_DPB_SIZE - 1 ) ; ps_slice_hdr -> i1_num_ref_idx_l1_active = CLIP3 ( ps_slice_hdr -> i1_num_ref_idx_l1_active , 0 , MAX_DPB_SIZE - 1 ) ; if ( 0 == num_poc_total_curr ) return IHEVCD_IGNORE_SLICE ; if ( ( ps_pps -> i1_lists_modification_present_flag ) && ( num_poc_total_curr > 1 ) ) { ihevcd_ref_pic_list_modification ( ps_bitstrm , ps_slice_hdr , num_poc_total_curr ) ; } else { ps_slice_hdr -> s_rplm . i1_ref_pic_list_modification_flag_l0 = 0 ; ps_slice_hdr -> s_rplm . i1_ref_pic_list_modification_flag_l1 = 0 ; } if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { BITS_PARSE ( \"mvd_l1_zero_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_mvd_l1_zero_flag = value ; } ps_slice_hdr -> i1_cabac_init_flag = 0 ; if ( ps_pps -> i1_cabac_init_present_flag ) { BITS_PARSE ( \"cabac_init_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_cabac_init_flag = value ; } ps_slice_hdr -> i1_collocated_from_l0_flag = 1 ; ps_slice_hdr -> i1_collocated_ref_idx = 0 ; if ( ps_slice_hdr -> i1_slice_temporal_mvp_enable_flag ) { if ( BSLICE == ps_slice_hdr -> i1_slice_type ) { BITS_PARSE ( \"collocated_from_l0_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_collocated_from_l0_flag = value ; } if ( ( ps_slice_hdr -> i1_collocated_from_l0_flag && ( ps_slice_hdr -> i1_num_ref_idx_l0_active > 1 ) ) || ( ! ps_slice_hdr -> i1_collocated_from_l0_flag && ( ps_slice_hdr -> i1_num_ref_idx_l1_active > 1 ) ) ) { UEV_PARSE ( \"collocated_ref_idx\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_collocated_ref_idx = value ; } } ps_slice_hdr -> i1_collocated_ref_idx = CLIP3 ( ps_slice_hdr -> i1_collocated_ref_idx , 0 , MAX_DPB_SIZE - 1 ) ; if ( ( ps_pps -> i1_weighted_pred_flag && ( PSLICE == ps_slice_hdr -> i1_slice_type ) ) || ( ps_pps -> i1_weighted_bipred_flag && ( BSLICE == ps_slice_hdr -> i1_slice_type ) ) ) { ihevcd_parse_pred_wt_ofst ( ps_bitstrm , ps_sps , ps_pps , ps_slice_hdr ) ; } UEV_PARSE ( \"five_minus_max_num_merge_cand\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_max_num_merge_cand = 5 - value ; } ps_slice_hdr -> i1_max_num_merge_cand = CLIP3 ( ps_slice_hdr -> i1_max_num_merge_cand , 1 , 5 ) ; SEV_PARSE ( \"slice_qp_delta\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_qp_delta = value ; if ( ps_pps -> i1_pic_slice_level_chroma_qp_offsets_present_flag ) { SEV_PARSE ( \"slice_cb_qp_offset\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_cb_qp_offset = value ; SEV_PARSE ( \"slice_cr_qp_offset\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_slice_cr_qp_offset = value ; } ps_slice_hdr -> i1_deblocking_filter_override_flag = 0 ; ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag = ps_pps -> i1_pic_disable_deblocking_filter_flag ; ps_slice_hdr -> i1_beta_offset_div2 = ps_pps -> i1_beta_offset_div2 ; ps_slice_hdr -> i1_tc_offset_div2 = ps_pps -> i1_tc_offset_div2 ; disable_deblocking_filter_flag = ps_pps -> i1_pic_disable_deblocking_filter_flag ; if ( ps_pps -> i1_deblocking_filter_control_present_flag ) { if ( ps_pps -> i1_deblocking_filter_override_enabled_flag ) { BITS_PARSE ( \"deblocking_filter_override_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_deblocking_filter_override_flag = value ; } if ( ps_slice_hdr -> i1_deblocking_filter_override_flag ) { BITS_PARSE ( \"slice_disable_deblocking_filter_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag = value ; disable_deblocking_filter_flag = ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ; if ( ! ps_slice_hdr -> i1_slice_disable_deblocking_filter_flag ) { SEV_PARSE ( \"beta_offset_div2\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_beta_offset_div2 = value ; SEV_PARSE ( \"tc_offset_div2\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_tc_offset_div2 = value ; } } } ps_slice_hdr -> i1_slice_loop_filter_across_slices_enabled_flag = ps_pps -> i1_loop_filter_across_slices_enabled_flag ; if ( ps_pps -> i1_loop_filter_across_slices_enabled_flag && ( ps_slice_hdr -> i1_slice_sao_luma_flag || ps_slice_hdr -> i1_slice_sao_chroma_flag || ! disable_deblocking_filter_flag ) ) { BITS_PARSE ( \"slice_loop_filter_across_slices_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_slice_hdr -> i1_slice_loop_filter_across_slices_enabled_flag = value ; } } if ( ( ! first_slice_in_pic_flag ) && ( ps_codec -> i4_pic_present ) ) { slice_header_t * ps_slice_hdr_base = ps_codec -> ps_slice_hdr_base ; if ( ( ps_slice_hdr_base -> i1_pps_id != ps_slice_hdr -> i1_pps_id ) || ( ps_slice_hdr_base -> i4_pic_order_cnt_lsb != ps_slice_hdr -> i4_pic_order_cnt_lsb ) ) { return IHEVCD_IGNORE_SLICE ; } } if ( 0 == ps_codec -> i4_pic_present ) { ps_slice_hdr -> i4_abs_pic_order_cnt = ihevcd_calc_poc ( ps_codec , ps_nal , ps_sps -> i1_log2_max_pic_order_cnt_lsb , ps_slice_hdr -> i4_pic_order_cnt_lsb ) ; } else { ps_slice_hdr -> i4_abs_pic_order_cnt = ps_codec -> s_parse . i4_abs_pic_order_cnt ; } if ( ! first_slice_in_pic_flag ) { if ( ps_codec -> s_parse . i4_abs_pic_order_cnt == ps_slice_hdr -> i4_abs_pic_order_cnt ) { if ( slice_address > ps_codec -> s_parse . i4_next_ctb_indx ) { if ( ps_codec -> i4_pic_present ) { ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; return ret ; } else { return IHEVCD_IGNORE_SLICE ; } } else if ( slice_address < ps_codec -> s_parse . i4_next_ctb_indx ) { return IHEVCD_IGNORE_SLICE ; } else { ps_codec -> i4_slice_error = 0 ; } } else { if ( ps_codec -> i4_pic_present ) { slice_header_t * ps_slice_hdr_next ; ps_codec -> i4_slice_error = 1 ; ps_codec -> s_parse . i4_cur_slice_idx -- ; if ( ps_codec -> s_parse . i4_cur_slice_idx < 0 ) ps_codec -> s_parse . i4_cur_slice_idx = 0 ; ps_slice_hdr_next = ps_codec -> s_parse . ps_slice_hdr_base + ( ( ps_codec -> s_parse . i4_cur_slice_idx + 1 ) & ( MAX_SLICE_HDR_CNT - 1 ) ) ; ps_slice_hdr_next -> i2_ctb_x = 0 ; ps_slice_hdr_next -> i2_ctb_y = ps_codec -> s_parse . ps_sps -> i2_pic_ht_in_ctb ; return ret ; } else { if ( ps_slice_hdr -> i1_dependent_slice_flag ) return IHEVCD_IGNORE_SLICE ; ps_codec -> s_parse . i4_abs_pic_order_cnt = ps_slice_hdr -> i4_abs_pic_order_cnt ; } } } else { if ( ps_codec -> s_parse . i4_abs_pic_order_cnt == ps_slice_hdr -> i4_abs_pic_order_cnt ) return IHEVCD_IGNORE_SLICE ; ps_codec -> s_parse . i4_abs_pic_order_cnt = ps_slice_hdr -> i4_abs_pic_order_cnt ; } ps_slice_hdr -> i4_num_entry_point_offsets = 0 ; if ( ( ps_pps -> i1_tiles_enabled_flag ) || ( ps_pps -> i1_entropy_coding_sync_enabled_flag ) ) { UEV_PARSE ( \"num_entry_point_offsets\" , value , ps_bitstrm ) ; ps_slice_hdr -> i4_num_entry_point_offsets = value ; { WORD32 max_num_entry_point_offsets ; if ( ( ps_pps -> i1_tiles_enabled_flag ) && ( ps_pps -> i1_entropy_coding_sync_enabled_flag ) ) { max_num_entry_point_offsets = ps_pps -> i1_num_tile_columns * ( ps_sps -> i2_pic_ht_in_ctb - 1 ) ; } else if ( ps_pps -> i1_tiles_enabled_flag ) { max_num_entry_point_offsets = ps_pps -> i1_num_tile_columns * ps_pps -> i1_num_tile_rows ; } else { max_num_entry_point_offsets = ( ps_sps -> i2_pic_ht_in_ctb - 1 ) ; } ps_slice_hdr -> i4_num_entry_point_offsets = CLIP3 ( ps_slice_hdr -> i4_num_entry_point_offsets , 0 , max_num_entry_point_offsets ) ; } if ( ps_slice_hdr -> i4_num_entry_point_offsets > 0 ) { UEV_PARSE ( \"offset_len_minus1\" , value , ps_bitstrm ) ; ps_slice_hdr -> i1_offset_len = value + 1 ; for ( i = 0 ; i < ps_slice_hdr -> i4_num_entry_point_offsets ; i ++ ) { BITS_PARSE ( \"entry_point_offset\" , value , ps_bitstrm , ps_slice_hdr -> i1_offset_len ) ; } } } if ( ps_pps -> i1_slice_header_extension_present_flag ) { UEV_PARSE ( \"slice_header_extension_length\" , value , ps_bitstrm ) ; ps_slice_hdr -> i2_slice_header_extension_length = value ; for ( i = 0 ; i < ps_slice_hdr -> i2_slice_header_extension_length ; i ++ ) { BITS_PARSE ( \"slice_header_extension_data_byte\" , value , ps_bitstrm , 8 ) ; } } ihevcd_bits_flush_to_byte_boundary ( ps_bitstrm ) ; { dpb_mgr_t * ps_dpb_mgr = ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr ; WORD32 r_idx ; if ( ( NAL_IDR_W_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_IDR_N_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_N_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_W_DLP == ps_slice_hdr -> i1_nal_unit_type ) || ( NAL_BLA_W_LP == ps_slice_hdr -> i1_nal_unit_type ) || ( 0 == ps_codec -> u4_pic_cnt ) ) { for ( i = 0 ; i < MAX_DPB_BUFS ; i ++ ) { if ( ps_dpb_mgr -> as_dpb_info [ i ] . ps_pic_buf ) { pic_buf_t * ps_pic_buf = ps_dpb_mgr -> as_dpb_info [ i ] . ps_pic_buf ; mv_buf_t * ps_mv_buf ; ihevc_dpb_mgr_del_ref ( ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr , ( buf_mgr_t * ) ps_codec -> pv_pic_buf_mgr , ps_pic_buf -> i4_abs_poc ) ; ps_mv_buf = ( mv_buf_t * ) ps_codec -> ps_mv_buf ; <S2SV_StartBug> for ( i = 0 ; i < BUF_MGR_MAX_CNT ; i ++ ) <S2SV_EndBug> { if ( ps_mv_buf && ps_mv_buf -> i4_abs_poc == ps_pic_buf -> i4_abs_poc ) { <S2SV_StartBug> ihevc_buf_mgr_release ( ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr , i , BUF_MGR_REF ) ; <S2SV_EndBug> break ; } ps_mv_buf ++ ; } } } for ( r_idx = 0 ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = NULL ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = NULL ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = NULL ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = NULL ; } } else { ret = ihevcd_ref_list ( ps_codec , ps_pps , ps_sps , ps_slice_hdr ) ; if ( ( WORD32 ) IHEVCD_SUCCESS != ret ) { return ret ; } } } if ( ps_codec -> i4_pic_present ) { pic_buf_t * ps_pic_buf_ref ; mv_buf_t * ps_mv_buf_ref ; WORD32 r_idx ; dpb_mgr_t * ps_dpb_mgr = ( dpb_mgr_t * ) ps_codec -> pv_dpb_mgr ; buf_mgr_t * ps_mv_buf_mgr = ( buf_mgr_t * ) ps_codec -> pv_mv_buf_mgr ; ps_pic_buf_ref = ihevc_dpb_mgr_get_ref_by_nearest_poc ( ps_dpb_mgr , ps_slice_hdr -> i4_abs_pic_order_cnt ) ; if ( NULL == ps_pic_buf_ref ) { ps_pic_buf_ref = ps_codec -> as_process [ 0 ] . ps_cur_pic ; ps_mv_buf_ref = ps_codec -> s_parse . ps_cur_mv_buf ; } else { ps_mv_buf_ref = ihevcd_mv_mgr_get_poc ( ps_mv_buf_mgr , ps_pic_buf_ref -> i4_abs_poc ) ; } for ( r_idx = 0 ; r_idx < ps_slice_hdr -> i1_num_ref_idx_l0_active ; r_idx ++ ) { if ( NULL == ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } for ( r_idx = ps_slice_hdr -> i1_num_ref_idx_l0_active ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list0 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } for ( r_idx = 0 ; r_idx < ps_slice_hdr -> i1_num_ref_idx_l1_active ; r_idx ++ ) { if ( NULL == ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf ) { ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } for ( r_idx = ps_slice_hdr -> i1_num_ref_idx_l1_active ; r_idx < MAX_DPB_SIZE ; r_idx ++ ) { ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_pic_buf = ( void * ) ps_pic_buf_ref ; ps_slice_hdr -> as_ref_pic_list1 [ r_idx ] . pv_mv_buf = ( void * ) ps_mv_buf_ref ; } } if ( ! ps_slice_hdr -> i1_first_slice_in_pic_flag ) { ps_slice_hdr -> i2_ctb_x = slice_address % ps_sps -> i2_pic_wd_in_ctb ; ps_slice_hdr -> i2_ctb_y = slice_address / ps_sps -> i2_pic_wd_in_ctb ; if ( ! ps_slice_hdr -> i1_dependent_slice_flag ) { ps_slice_hdr -> i2_independent_ctb_x = ps_slice_hdr -> i2_ctb_x ; ps_slice_hdr -> i2_independent_ctb_y = ps_slice_hdr -> i2_ctb_y ; } } else { ps_slice_hdr -> i2_ctb_x = 0 ; ps_slice_hdr -> i2_ctb_y = 0 ; ps_slice_hdr -> i2_independent_ctb_x = 0 ; ps_slice_hdr -> i2_independent_ctb_y = 0 ; } if ( ( ! first_slice_in_pic_flag ) && ( 0 == ps_codec -> i4_pic_present ) ) { slice_header_t * ps_slice_hdr_prev = ps_codec -> s_parse . ps_slice_hdr_base ; ihevcd_copy_slice_hdr ( ps_codec , 0 , ( ps_codec -> s_parse . i4_cur_slice_idx & ( MAX_SLICE_HDR_CNT - 1 ) ) ) ; ps_codec -> i4_slice_error = 1 ; ps_slice_hdr_prev -> i2_ctb_x = 0 ; ps_slice_hdr_prev -> i2_ctb_y = 0 ; ps_codec -> s_parse . i4_ctb_x = 0 ; ps_codec -> s_parse . i4_ctb_y = 0 ; ps_codec -> s_parse . i4_cur_slice_idx = 0 ; if ( ( ps_slice_hdr -> i2_ctb_x == 0 ) && ( ps_slice_hdr -> i2_ctb_y == 0 ) ) { ps_slice_hdr -> i2_ctb_x ++ ; } } { if ( ( i1_nal_unit_type < NAL_BLA_W_LP ) && ( i1_nal_unit_type % 2 == 0 ) ) { if ( IVD_SKIP_B == ps_codec -> e_pic_skip_mode ) return IHEVCD_IGNORE_SLICE ; } if ( ( IVD_SKIP_PB == ps_codec -> e_pic_skip_mode ) && ( ISLICE != ps_slice_hdr -> i1_slice_type ) ) { return IHEVCD_IGNORE_SLICE ; } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; WORD32 i , j <S2SV_ModStart> ; for ( j = 0 ; j < ps_codec -> i4_max_dpb_size ; j <S2SV_ModEnd> ++ ) { <S2SV_ModStart> -> pv_mv_buf_mgr , j <S2SV_ModEnd> , BUF_MGR_REF )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14397\n\n```\nCWE-476 static void <S2SV_StartBug> sraSpanRemove ( sraSpan * span ) { <S2SV_EndBug> span -> _prev -> _next = span -> _next ; span -> _next -> _prev = span -> _prev ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sraSpan * span ) { if ( <S2SV_ModStart> _prev ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12714\n\n```\nCWE-787 static struct prog_entry * predicate_parse ( const char * str , int nr_parens , int nr_preds , parse_pred_fn parse_pred , void * data , struct filter_parse_error * pe ) { struct prog_entry * prog_stack ; struct prog_entry * prog ; const char * ptr = str ; char * inverts = NULL ; int * op_stack ; int * top ; int invert = 0 ; int ret = - ENOMEM ; int len ; int N = 0 ; int i ; nr_preds += 2 ; op_stack = kmalloc_array ( nr_parens , sizeof ( * op_stack ) , GFP_KERNEL ) ; if ( ! op_stack ) return ERR_PTR ( - ENOMEM ) ; prog_stack = kmalloc_array ( nr_preds , sizeof ( * prog_stack ) , GFP_KERNEL ) ; if ( ! prog_stack ) { parse_error ( pe , - ENOMEM , 0 ) ; goto out_free ; } inverts = kmalloc_array ( nr_preds , sizeof ( * inverts ) , GFP_KERNEL ) ; if ( ! inverts ) { parse_error ( pe , - ENOMEM , 0 ) ; goto out_free ; } top = op_stack ; prog = prog_stack ; * top = 0 ; while ( * ptr ) { const char * next = ptr ++ ; if ( isspace ( * next ) ) continue ; switch ( * next ) { case '(' : if ( top - op_stack > nr_parens ) return ERR_PTR ( - EINVAL ) ; * ( ++ top ) = invert ; continue ; case '!' : if ( ! is_not ( next ) ) break ; invert = ! invert ; continue ; } if ( N >= nr_preds ) { parse_error ( pe , FILT_ERR_TOO_MANY_PREDS , next - str ) ; goto out_free ; } inverts [ N ] = invert ; prog [ N ] . target = N - 1 ; len = parse_pred ( next , data , ptr - str , pe , & prog [ N ] . pred ) ; if ( len < 0 ) { ret = len ; goto out_free ; } ptr = next + len ; N ++ ; ret = - 1 ; while ( 1 ) { next = ptr ++ ; if ( isspace ( * next ) ) continue ; switch ( * next ) { case ')' : case '\\\\0' : break ; case '&' : case '|' : if ( next [ 1 ] == next [ 0 ] ) { ptr ++ ; break ; } default : parse_error ( pe , FILT_ERR_TOO_MANY_PREDS , next - str ) ; goto out_free ; } invert = * top & INVERT ; if ( * top & PROCESS_AND ) { update_preds ( prog , N - 1 , invert ) ; * top &= ~ PROCESS_AND ; } if ( * next == '&' ) { * top |= PROCESS_AND ; break ; } if ( * top & PROCESS_OR ) { update_preds ( prog , N - 1 , ! invert ) ; * top &= ~ PROCESS_OR ; } if ( * next == '|' ) { * top |= PROCESS_OR ; break ; } if ( ! * next ) goto out ; if ( top == op_stack ) { ret = - 1 ; parse_error ( pe , FILT_ERR_TOO_MANY_CLOSE , ptr - str ) ; goto out_free ; } top -- ; } } out : if ( top != op_stack ) { parse_error ( pe , FILT_ERR_TOO_MANY_OPEN , ptr - str ) ; goto out_free ; } <S2SV_StartBug> prog [ N ] . pred = NULL ; <S2SV_EndBug> prog [ N ] . target = 1 ; prog [ N + 1 ] . pred = NULL ; prog [ N + 1 ] . target = 0 ; prog [ N - 1 ] . target = N ; prog [ N - 1 ] . when_to_branch = false ; for ( i = N - 1 ; i -- ; ) { int target = prog [ i ] . target ; if ( prog [ i ] . when_to_branch == prog [ target ] . when_to_branch ) prog [ i ] . target = prog [ target ] . target ; } for ( i = 0 ; i < N ; i ++ ) { invert = inverts [ i ] ^ prog [ i ] . when_to_branch ; prog [ i ] . when_to_branch = invert ; if ( WARN_ON ( prog [ i ] . target <= i ) ) { ret = - EINVAL ; goto out_free ; } } return prog ; out_free : kfree ( op_stack ) ; kfree ( prog_stack ) ; kfree ( inverts ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_free ; } if ( ! N ) { ret = - EINVAL ; parse_error ( pe , FILT_ERR_NO_FILTER , ptr - str ) ; goto out_free ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11338\n\n```\nCWE-476 static int decode_nal_unit ( HEVCContext * s , const H2645NAL * nal ) { HEVCLocalContext * lc = s -> HEVClc ; GetBitContext * gb = & lc -> gb ; int ctb_addr_ts , ret ; * gb = nal -> gb ; s -> nal_unit_type = nal -> type ; s -> temporal_id = nal -> temporal_id ; switch ( s -> nal_unit_type ) { case HEVC_NAL_VPS : if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_params ) { ret = s -> avctx -> hwaccel -> decode_params ( s -> avctx , nal -> type , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } ret = ff_hevc_decode_nal_vps ( gb , s -> avctx , & s -> ps ) ; if ( ret < 0 ) goto fail ; break ; case HEVC_NAL_SPS : if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_params ) { ret = s -> avctx -> hwaccel -> decode_params ( s -> avctx , nal -> type , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } ret = ff_hevc_decode_nal_sps ( gb , s -> avctx , & s -> ps , s -> apply_defdispwin ) ; if ( ret < 0 ) goto fail ; break ; case HEVC_NAL_PPS : if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_params ) { ret = s -> avctx -> hwaccel -> decode_params ( s -> avctx , nal -> type , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } ret = ff_hevc_decode_nal_pps ( gb , s -> avctx , & s -> ps ) ; if ( ret < 0 ) goto fail ; break ; case HEVC_NAL_SEI_PREFIX : case HEVC_NAL_SEI_SUFFIX : if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_params ) { ret = s -> avctx -> hwaccel -> decode_params ( s -> avctx , nal -> type , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } ret = ff_hevc_decode_nal_sei ( gb , s -> avctx , & s -> sei , & s -> ps , s -> nal_unit_type ) ; if ( ret < 0 ) goto fail ; break ; case HEVC_NAL_TRAIL_R : case HEVC_NAL_TRAIL_N : case HEVC_NAL_TSA_N : case HEVC_NAL_TSA_R : case HEVC_NAL_STSA_N : case HEVC_NAL_STSA_R : case HEVC_NAL_BLA_W_LP : case HEVC_NAL_BLA_W_RADL : case HEVC_NAL_BLA_N_LP : case HEVC_NAL_IDR_W_RADL : case HEVC_NAL_IDR_N_LP : case HEVC_NAL_CRA_NUT : case HEVC_NAL_RADL_N : case HEVC_NAL_RADL_R : case HEVC_NAL_RASL_N : case HEVC_NAL_RASL_R : ret = hls_slice_header ( s ) ; if ( ret < 0 ) <S2SV_StartBug> return ret ; <S2SV_EndBug> if ( ( s -> avctx -> skip_frame >= AVDISCARD_BIDIR && s -> sh . slice_type == HEVC_SLICE_B ) || ( s -> avctx -> skip_frame >= AVDISCARD_NONINTRA && s -> sh . slice_type != HEVC_SLICE_I ) || ( s -> avctx -> skip_frame >= AVDISCARD_NONKEY && ! IS_IRAP ( s ) ) ) { break ; } if ( s -> sh . first_slice_in_pic_flag ) { <S2SV_StartBug> if ( s -> ref ) { <S2SV_EndBug> av_log ( s -> avctx , AV_LOG_ERROR , \"Two<S2SV_blank>slices<S2SV_blank>reporting<S2SV_blank>being<S2SV_blank>the<S2SV_blank>first<S2SV_blank>in<S2SV_blank>the<S2SV_blank>same<S2SV_blank>frame.\\\\n\" ) ; goto fail ; } if ( s -> max_ra == INT_MAX ) { if ( s -> nal_unit_type == HEVC_NAL_CRA_NUT || IS_BLA ( s ) ) { s -> max_ra = s -> poc ; } else { if ( IS_IDR ( s ) ) s -> max_ra = INT_MIN ; } } if ( ( s -> nal_unit_type == HEVC_NAL_RASL_R || s -> nal_unit_type == HEVC_NAL_RASL_N ) && s -> poc <= s -> max_ra ) { s -> is_decoded = 0 ; break ; } else { if ( s -> nal_unit_type == HEVC_NAL_RASL_R && s -> poc > s -> max_ra ) s -> max_ra = INT_MIN ; } s -> overlap ++ ; ret = hevc_frame_start ( s ) ; if ( ret < 0 ) return ret ; } else if ( ! s -> ref ) { av_log ( s -> avctx , AV_LOG_ERROR , \"First<S2SV_blank>slice<S2SV_blank>in<S2SV_blank>a<S2SV_blank>frame<S2SV_blank>missing.\\\\n\" ) ; goto fail ; } if ( s -> nal_unit_type != s -> first_nal_type ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Non-matching<S2SV_blank>NAL<S2SV_blank>types<S2SV_blank>of<S2SV_blank>the<S2SV_blank>VCL<S2SV_blank>NALUs:<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , s -> first_nal_type , s -> nal_unit_type ) ; return AVERROR_INVALIDDATA ; } if ( ! s -> sh . dependent_slice_segment_flag && s -> sh . slice_type != HEVC_SLICE_I ) { ret = ff_hevc_slice_rpl ( s ) ; if ( ret < 0 ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Error<S2SV_blank>constructing<S2SV_blank>the<S2SV_blank>reference<S2SV_blank>lists<S2SV_blank>for<S2SV_blank>the<S2SV_blank>current<S2SV_blank>slice.\\\\n\" ) ; goto fail ; } } if ( s -> sh . first_slice_in_pic_flag && s -> avctx -> hwaccel ) { ret = s -> avctx -> hwaccel -> start_frame ( s -> avctx , NULL , 0 ) ; if ( ret < 0 ) goto fail ; } if ( s -> avctx -> hwaccel ) { ret = s -> avctx -> hwaccel -> decode_slice ( s -> avctx , nal -> raw_data , nal -> raw_size ) ; if ( ret < 0 ) goto fail ; } else { if ( s -> threads_number > 1 && s -> sh . num_entry_point_offsets > 0 ) ctb_addr_ts = hls_slice_data_wpp ( s , nal ) ; else ctb_addr_ts = hls_slice_data ( s ) ; if ( ctb_addr_ts >= ( s -> ps . sps -> ctb_width * s -> ps . sps -> ctb_height ) ) { s -> is_decoded = 1 ; } if ( ctb_addr_ts < 0 ) { ret = ctb_addr_ts ; goto fail ; } } break ; case HEVC_NAL_EOS_NUT : case HEVC_NAL_EOB_NUT : s -> seq_decode = ( s -> seq_decode + 1 ) & 0xff ; s -> max_ra = INT_MAX ; break ; case HEVC_NAL_AUD : case HEVC_NAL_FD_NUT : break ; default : av_log ( s -> avctx , AV_LOG_INFO , \"Skipping<S2SV_blank>NAL<S2SV_blank>unit<S2SV_blank>%d\\\\n\" , s -> nal_unit_type ) ; } return 0 ; fail : if ( s -> avctx -> err_recognition & AV_EF_EXPLODE ) return ret ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ret ; if ( ret == 1 ) { ret = AVERROR_INVALIDDATA ; goto fail ; } <S2SV_ModStart> ( s -> <S2SV_ModEnd> max_ra == INT_MAX\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3235\n\n```\nCWE-200 static int recv_msg ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t buf_len , int flags ) { struct sock * sk = sock -> sk ; struct tipc_port * tport = tipc_sk_port ( sk ) ; struct sk_buff * buf ; struct tipc_msg * msg ; long timeout ; unsigned int sz ; u32 err ; int res ; if ( unlikely ( ! buf_len ) ) return - EINVAL ; lock_sock ( sk ) ; if ( unlikely ( sock -> state == SS_UNCONNECTED ) ) { res = - ENOTCONN ; goto exit ; } <S2SV_StartBug> timeout = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; <S2SV_EndBug> restart : while ( skb_queue_empty ( & sk -> sk_receive_queue ) ) { if ( sock -> state == SS_DISCONNECTING ) { res = - ENOTCONN ; goto exit ; } if ( timeout <= 0L ) { res = timeout ? timeout : - EWOULDBLOCK ; goto exit ; } release_sock ( sk ) ; timeout = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , tipc_rx_ready ( sock ) , timeout ) ; lock_sock ( sk ) ; } buf = skb_peek ( & sk -> sk_receive_queue ) ; msg = buf_msg ( buf ) ; sz = msg_data_sz ( msg ) ; err = msg_errcode ( msg ) ; if ( ( ! sz ) && ( ! err ) ) { advance_rx_queue ( sk ) ; goto restart ; } set_orig_addr ( m , msg ) ; res = anc_data_recv ( m , msg , tport ) ; if ( res ) goto exit ; if ( ! err ) { if ( unlikely ( buf_len < sz ) ) { sz = buf_len ; m -> msg_flags |= MSG_TRUNC ; } res = skb_copy_datagram_iovec ( buf , msg_hdr_sz ( msg ) , m -> msg_iov , sz ) ; if ( res ) goto exit ; res = sz ; } else { if ( ( sock -> state == SS_READY ) || ( ( err == TIPC_CONN_SHUTDOWN ) || m -> msg_control ) ) res = 0 ; else res = - ECONNRESET ; } if ( likely ( ! ( flags & MSG_PEEK ) ) ) { if ( ( sock -> state != SS_READY ) && ( ++ tport -> conn_unacked >= TIPC_FLOW_CONTROL_WIN ) ) tipc_acknowledge ( tport -> ref , tport -> conn_unacked ) ; advance_rx_queue ( sk ) ; } exit : release_sock ( sk ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exit ; } m -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * mr_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { <S2SV_StartBug> if ( * rsize >= 30 && rdesc [ 29 ] == 0x05 && rdesc [ 30 ] == 0x09 ) { <S2SV_EndBug> hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>button/consumer<S2SV_blank>in<S2SV_blank>HID<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 30 ] = 0x0c ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 31 <S2SV_ModEnd> && rdesc [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2517\n\n```\nCWE-119 static int nl80211_trigger_scan ( struct sk_buff * skb , struct genl_info * info ) { struct cfg80211_registered_device * rdev = info -> user_ptr [ 0 ] ; struct net_device * dev = info -> user_ptr [ 1 ] ; struct cfg80211_scan_request * request ; struct nlattr * attr ; struct wiphy * wiphy ; int err , tmp , n_ssids = 0 , n_channels , i ; enum ieee80211_band band ; size_t ie_len ; if ( ! is_valid_ie_attr ( info -> attrs [ NL80211_ATTR_IE ] ) ) return - EINVAL ; wiphy = & rdev -> wiphy ; if ( ! rdev -> ops -> scan ) return - EOPNOTSUPP ; if ( rdev -> scan_req ) return - EBUSY ; if ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) { n_channels = validate_scan_freqs ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) ; if ( ! n_channels ) return - EINVAL ; } else { n_channels = 0 ; for ( band = 0 ; band < IEEE80211_NUM_BANDS ; band ++ ) if ( wiphy -> bands [ band ] ) n_channels += wiphy -> bands [ band ] -> n_channels ; } if ( info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] ) nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] , tmp ) n_ssids ++ ; if ( n_ssids > wiphy -> max_scan_ssids ) return - EINVAL ; if ( info -> attrs [ NL80211_ATTR_IE ] ) ie_len = nla_len ( info -> attrs [ NL80211_ATTR_IE ] ) ; else ie_len = 0 ; if ( ie_len > wiphy -> max_scan_ie_len ) return - EINVAL ; request = kzalloc ( sizeof ( * request ) + sizeof ( * request -> ssids ) * n_ssids + sizeof ( * request -> channels ) * n_channels + ie_len , GFP_KERNEL ) ; if ( ! request ) return - ENOMEM ; if ( n_ssids ) request -> ssids = ( void * ) & request -> channels [ n_channels ] ; request -> n_ssids = n_ssids ; if ( ie_len ) { if ( request -> ssids ) request -> ie = ( void * ) ( request -> ssids + n_ssids ) ; else request -> ie = ( void * ) ( request -> channels + n_channels ) ; } i = 0 ; if ( info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] ) { nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_FREQUENCIES ] , tmp ) { struct ieee80211_channel * chan ; chan = ieee80211_get_channel ( wiphy , nla_get_u32 ( attr ) ) ; if ( ! chan ) { err = - EINVAL ; goto out_free ; } if ( chan -> flags & IEEE80211_CHAN_DISABLED ) continue ; request -> channels [ i ] = chan ; i ++ ; } } else { for ( band = 0 ; band < IEEE80211_NUM_BANDS ; band ++ ) { int j ; if ( ! wiphy -> bands [ band ] ) continue ; for ( j = 0 ; j < wiphy -> bands [ band ] -> n_channels ; j ++ ) { struct ieee80211_channel * chan ; chan = & wiphy -> bands [ band ] -> channels [ j ] ; if ( chan -> flags & IEEE80211_CHAN_DISABLED ) continue ; request -> channels [ i ] = chan ; i ++ ; } } } if ( ! i ) { err = - EINVAL ; goto out_free ; } request -> n_channels = i ; i = 0 ; if ( info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] ) { <S2SV_StartBug> nla_for_each_nested ( attr , info -> attrs [ NL80211_ATTR_SCAN_SSIDS ] , tmp ) { <S2SV_EndBug> if ( request -> ssids [ i ] . ssid_len > IEEE80211_MAX_SSID_LEN ) { err = - EINVAL ; goto out_free ; } memcpy ( request -> ssids [ i ] . ssid , nla_data ( attr ) , nla_len ( attr ) ) ; <S2SV_StartBug> request -> ssids [ i ] . ssid_len = nla_len ( attr ) ; <S2SV_EndBug> i ++ ; } } if ( info -> attrs [ NL80211_ATTR_IE ] ) { request -> ie_len = nla_len ( info -> attrs [ NL80211_ATTR_IE ] ) ; memcpy ( ( void * ) request -> ie , nla_data ( info -> attrs [ NL80211_ATTR_IE ] ) , request -> ie_len ) ; } request -> dev = dev ; request -> wiphy = & rdev -> wiphy ; rdev -> scan_req = request ; err = rdev -> ops -> scan ( & rdev -> wiphy , dev , request ) ; if ( ! err ) { nl80211_send_scan_start ( rdev , dev ) ; dev_hold ( dev ) ; } else { out_free : rdev -> scan_req = NULL ; kfree ( request ) ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp ) { request -> ssids [ i ] . ssid_len = nla_len ( attr ) ; <S2SV_ModStart> ) ) ; <S2SV_ModEnd> i ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3188\n\n```\nCWE-000 <S2SV_StartBug> static inline __u32 dccp_v6_init_sequence ( struct sk_buff * skb ) <S2SV_EndBug> { return secure_dccpv6_sequence_number ( ipv6_hdr ( skb ) -> daddr . s6_addr32 , ipv6_hdr ( skb ) -> saddr . s6_addr32 , dccp_hdr ( skb ) -> dccph_dport , dccp_hdr ( skb ) -> dccph_sport ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static inline __u64 <S2SV_ModEnd> dccp_v6_init_sequence ( struct\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8369\n\n```\nCWE-119 int kvm_iommu_map_pages ( struct kvm * kvm , struct kvm_memory_slot * slot ) { gfn_t gfn , end_gfn ; pfn_t pfn ; int r = 0 ; struct iommu_domain * domain = kvm -> arch . iommu_domain ; int flags ; if ( ! domain ) return 0 ; gfn = slot -> base_gfn ; end_gfn = gfn + slot -> npages ; flags = IOMMU_READ ; if ( ! ( slot -> flags & KVM_MEM_READONLY ) ) flags |= IOMMU_WRITE ; if ( ! kvm -> arch . iommu_noncoherent ) flags |= IOMMU_CACHE ; while ( gfn < end_gfn ) { unsigned long page_size ; if ( iommu_iova_to_phys ( domain , gfn_to_gpa ( gfn ) ) ) { gfn += 1 ; continue ; } page_size = kvm_host_page_size ( kvm , gfn ) ; while ( ( gfn + ( page_size >> PAGE_SHIFT ) ) > end_gfn ) page_size >>= 1 ; while ( ( gfn << PAGE_SHIFT ) & ( page_size - 1 ) ) page_size >>= 1 ; while ( __gfn_to_hva_memslot ( slot , gfn ) & ( page_size - 1 ) ) page_size >>= 1 ; <S2SV_StartBug> pfn = kvm_pin_pages ( slot , gfn , page_size ) ; <S2SV_EndBug> if ( is_error_noslot_pfn ( pfn ) ) { gfn += 1 ; continue ; } r = iommu_map ( domain , gfn_to_gpa ( gfn ) , pfn_to_hpa ( pfn ) , page_size , flags ) ; if ( r ) { printk ( KERN_ERR \"kvm_iommu_map_address:\" \"iommu<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>map<S2SV_blank>pfn=%llx\\\\n\" , pfn ) ; <S2SV_StartBug> kvm_unpin_pages ( kvm , pfn , page_size ) ; <S2SV_EndBug> goto unmap_pages ; } gfn += page_size >> PAGE_SHIFT ; } return 0 ; unmap_pages : kvm_iommu_put_pages ( kvm , slot -> base_gfn , gfn - slot -> base_gfn ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gfn , page_size >> PAGE_SHIFT <S2SV_ModStart> pfn , page_size >> PAGE_SHIFT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3145\n\n```\nCWE-125 static u64 __skb_get_nlattr ( u64 ctx , u64 A , u64 X , u64 r4 , u64 r5 ) { struct sk_buff * skb = ( struct sk_buff * ) ( long ) ctx ; struct nlattr * nla ; <S2SV_StartBug> if ( skb_is_nonlinear ( skb ) ) <S2SV_EndBug> return 0 ; if ( A > skb -> len - sizeof ( struct nlattr ) ) return 0 ; nla = nla_find ( ( struct nlattr * ) & skb -> data [ A ] , skb -> len - A , X ) ; if ( nla ) return ( void * ) nla - ( void * ) skb -> data ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb_is_nonlinear ( skb ) ) return 0 ; if ( skb -> len < sizeof ( struct nlattr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2491\n\n```\nCWE-399 static void rpc_init_task ( struct rpc_task * task , const struct rpc_task_setup * task_setup_data ) { memset ( task , 0 , sizeof ( * task ) ) ; atomic_set ( & task -> tk_count , 1 ) ; task -> tk_flags = task_setup_data -> flags ; task -> tk_ops = task_setup_data -> callback_ops ; task -> tk_calldata = task_setup_data -> callback_data ; INIT_LIST_HEAD ( & task -> tk_task ) ; task -> tk_garb_retry = 2 ; task -> tk_cred_retry = 2 ; <S2SV_StartBug> task -> tk_priority = task_setup_data -> priority - RPC_PRIORITY_LOW ; <S2SV_EndBug> task -> tk_owner = current -> tgid ; task -> tk_workqueue = task_setup_data -> workqueue ; if ( task -> tk_ops -> rpc_call_prepare != NULL ) task -> tk_action = rpc_prepare_task ; task -> tk_start = ktime_get ( ) ; dprintk ( \"RPC:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>new<S2SV_blank>task<S2SV_blank>initialized,<S2SV_blank>procpid<S2SV_blank>%u\\\\n\" , task_pid_nr ( current ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; task -> tk_rebind_retry = 2 ; task ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_stmt ( PyObject * obj , stmt_ty * out , PyArena * arena ) { int isinstance ; PyObject * tmp = NULL ; int lineno ; int col_offset ; int end_lineno ; int end_col_offset ; if ( obj == Py_None ) { * out = NULL ; return 0 ; } if ( _PyObject_LookupAttrId ( obj , & PyId_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>stmt\" ) ; return 1 ; } else { int res ; res = obj2ast_int ( tmp , & lineno , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_col_offset , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>stmt\" ) ; return 1 ; } else { int res ; res = obj2ast_int ( tmp , & col_offset , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_end_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; end_lineno = 0 ; } else { int res ; res = obj2ast_int ( tmp , & end_lineno , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_end_col_offset , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; end_col_offset = 0 ; } else { int res ; res = obj2ast_int ( tmp , & end_col_offset , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) FunctionDef_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier name ; arguments_ty args ; asdl_seq * body ; asdl_seq * decorator_list ; <S2SV_StartBug> expr_ty returns ; <S2SV_EndBug> if ( _PyObject_LookupAttrId ( obj , & PyId_name , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } else { int res ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_args , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } else { int res ; res = obj2ast_arguments ( tmp , & args , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"FunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"FunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_decorator_list , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionDef\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"FunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; decorator_list = _Py_asdl_seq_new ( len , arena ) ; if ( decorator_list == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { expr_ty val ; res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"FunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( decorator_list , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_returns , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; returns = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & returns , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = FunctionDef ( name , args , body , decorator_list , returns , lineno , <S2SV_EndBug> col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AsyncFunctionDef_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier name ; arguments_ty args ; asdl_seq * body ; asdl_seq * decorator_list ; <S2SV_StartBug> expr_ty returns ; <S2SV_EndBug> if ( _PyObject_LookupAttrId ( obj , & PyId_name , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } else { int res ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_args , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"args\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } else { int res ; res = obj2ast_arguments ( tmp , & args , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncFunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncFunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_decorator_list , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFunctionDef\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncFunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; decorator_list = _Py_asdl_seq_new ( len , arena ) ; if ( decorator_list == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { expr_ty val ; res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncFunctionDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( decorator_list , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_returns , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; returns = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & returns , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = AsyncFunctionDef ( name , args , body , decorator_list , returns , <S2SV_EndBug> <S2SV_StartBug> lineno , col_offset , end_lineno , end_col_offset , <S2SV_EndBug> arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) ClassDef_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier name ; asdl_seq * bases ; asdl_seq * keywords ; asdl_seq * body ; asdl_seq * decorator_list ; if ( _PyObject_LookupAttrId ( obj , & PyId_name , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"name\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { int res ; res = obj2ast_identifier ( tmp , & name , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_bases , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"bases\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"bases\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; bases = _Py_asdl_seq_new ( len , arena ) ; if ( bases == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { expr_ty val ; res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"bases\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( bases , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_keywords , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; keywords = _Py_asdl_seq_new ( len , arena ) ; if ( keywords == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { keyword_ty val ; res = obj2ast_keyword ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"keywords\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( keywords , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_decorator_list , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ClassDef\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; decorator_list = _Py_asdl_seq_new ( len , arena ) ; if ( decorator_list == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { expr_ty val ; res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ClassDef<S2SV_blank>field<S2SV_blank>\\\\\"decorator_list\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( decorator_list , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = ClassDef ( name , bases , keywords , body , decorator_list , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Return_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; if ( _PyObject_LookupAttrId ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; value = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = Return ( value , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Delete_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * targets ; if ( _PyObject_LookupAttrId ( obj , & PyId_targets , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Delete\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Delete<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; targets = _Py_asdl_seq_new ( len , arena ) ; if ( targets == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { expr_ty val ; res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Delete<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( targets , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = Delete ( targets , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Assign_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * targets ; expr_ty value ; <S2SV_StartBug> if ( _PyObject_LookupAttrId ( obj , & PyId_targets , & tmp ) < 0 ) { <S2SV_EndBug> return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assign\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Assign<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; targets = _Py_asdl_seq_new ( len , arena ) ; if ( targets == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { expr_ty val ; res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Assign<S2SV_blank>field<S2SV_blank>\\\\\"targets\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( targets , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assign\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = Assign ( targets , value , lineno , col_offset , end_lineno , <S2SV_EndBug> end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AugAssign_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty target ; operator_ty op ; expr_ty value ; if ( _PyObject_LookupAttrId ( obj , & PyId_target , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_op , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"op\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } else { int res ; res = obj2ast_operator ( tmp , & op , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AugAssign\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = AugAssign ( target , op , value , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AnnAssign_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty target ; expr_ty annotation ; expr_ty value ; int simple ; if ( _PyObject_LookupAttrId ( obj , & PyId_target , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_annotation , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"annotation\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & annotation , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; value = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_simple , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"simple\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AnnAssign\" ) ; return 1 ; } else { int res ; res = obj2ast_int ( tmp , & simple , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = AnnAssign ( target , annotation , value , simple , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) For_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty target ; expr_ty iter ; asdl_seq * body ; <S2SV_StartBug> asdl_seq * orelse ; <S2SV_EndBug> if ( _PyObject_LookupAttrId ( obj , & PyId_target , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_iter , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"iter\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & iter , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"For<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"For<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>For\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"For<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Py_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"For<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( orelse , i , val ) ; } Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = For ( target , iter , body , orelse , lineno , col_offset , end_lineno , <S2SV_EndBug> end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AsyncFor_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty target ; expr_ty iter ; asdl_seq * body ; <S2SV_StartBug> asdl_seq * orelse ; <S2SV_EndBug> if ( _PyObject_LookupAttrId ( obj , & PyId_target , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_iter , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"iter\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & iter , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncFor<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncFor<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncFor\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncFor<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Py_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncFor<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( orelse , i , val ) ; } Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = AsyncFor ( target , iter , body , orelse , lineno , col_offset , <S2SV_EndBug> end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) While_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty test ; asdl_seq * body ; asdl_seq * orelse ; if ( _PyObject_LookupAttrId ( obj , & PyId_test , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"While<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"While<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>While\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"While<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Py_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"While<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( orelse , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = While ( test , body , orelse , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) If_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty test ; asdl_seq * body ; asdl_seq * orelse ; if ( _PyObject_LookupAttrId ( obj , & PyId_test , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"If<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"If<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>If\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"If<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Py_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"If<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( orelse , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = If ( test , body , orelse , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) With_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * items ; asdl_seq * body ; <S2SV_StartBug> if ( _PyObject_LookupAttrId ( obj , & PyId_items , & tmp ) < 0 ) { <S2SV_EndBug> return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>With\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"With<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; items = _Py_asdl_seq_new ( len , arena ) ; if ( items == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { withitem_ty val ; res = obj2ast_withitem ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"With<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( items , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>With\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"With<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"With<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = With ( items , body , lineno , col_offset , end_lineno , <S2SV_EndBug> end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) AsyncWith_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * items ; <S2SV_StartBug> asdl_seq * body ; <S2SV_EndBug> if ( _PyObject_LookupAttrId ( obj , & PyId_items , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncWith\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncWith<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; items = _Py_asdl_seq_new ( len , arena ) ; if ( items == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { withitem_ty val ; res = obj2ast_withitem ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncWith<S2SV_blank>field<S2SV_blank>\\\\\"items\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( items , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>AsyncWith\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"AsyncWith<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"AsyncWith<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = AsyncWith ( items , body , lineno , col_offset , end_lineno , <S2SV_EndBug> end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Raise_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty exc ; expr_ty cause ; if ( _PyObject_LookupAttrId ( obj , & PyId_exc , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; exc = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & exc , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_cause , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; cause = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & cause , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = Raise ( exc , cause , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Try_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * body ; asdl_seq * handlers ; asdl_seq * orelse ; asdl_seq * finalbody ; if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_handlers , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"handlers\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"handlers\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; handlers = _Py_asdl_seq_new ( len , arena ) ; if ( handlers == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { excepthandler_ty val ; res = obj2ast_excepthandler ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"handlers\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( handlers , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_orelse , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; orelse = _Py_asdl_seq_new ( len , arena ) ; if ( orelse == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"orelse\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( orelse , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_finalbody , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"finalbody\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Try\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"finalbody\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; finalbody = _Py_asdl_seq_new ( len , arena ) ; if ( finalbody == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Try<S2SV_blank>field<S2SV_blank>\\\\\"finalbody\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( finalbody , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = Try ( body , handlers , orelse , finalbody , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Assert_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty test ; expr_ty msg ; if ( _PyObject_LookupAttrId ( obj , & PyId_test , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"test\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Assert\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & test , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_msg , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; msg = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & msg , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = Assert ( test , msg , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Import_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * names ; if ( _PyObject_LookupAttrId ( obj , & PyId_names , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Import\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Import<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; names = _Py_asdl_seq_new ( len , arena ) ; if ( names == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { alias_ty val ; res = obj2ast_alias ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Import<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( names , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = Import ( names , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) ImportFrom_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { identifier module ; asdl_seq * names ; int level ; if ( _PyObject_LookupAttrId ( obj , & PyId_module , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; module = NULL ; } else { int res ; res = obj2ast_identifier ( tmp , & module , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_names , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>ImportFrom\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"ImportFrom<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; names = _Py_asdl_seq_new ( len , arena ) ; if ( names == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { alias_ty val ; res = obj2ast_alias ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"ImportFrom<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( names , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_level , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; level = 0 ; } else { int res ; res = obj2ast_int ( tmp , & level , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = ImportFrom ( module , names , level , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Global_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * names ; if ( _PyObject_LookupAttrId ( obj , & PyId_names , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Global\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Global<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; names = _Py_asdl_seq_new ( len , arena ) ; if ( names == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { identifier val ; res = obj2ast_identifier ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Global<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( names , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = Global ( names , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Nonlocal_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * names ; if ( _PyObject_LookupAttrId ( obj , & PyId_names , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Nonlocal\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Nonlocal<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; names = _Py_asdl_seq_new ( len , arena ) ; if ( names == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { identifier val ; res = obj2ast_identifier ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Nonlocal<S2SV_blank>field<S2SV_blank>\\\\\"names\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( names , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = Nonlocal ( names , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Expr_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty value ; if ( _PyObject_LookupAttrId ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Expr\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = Expr ( value , lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Pass_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { * out = Pass ( lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Break_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { * out = Break ( lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Continue_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { * out = Continue ( lineno , col_offset , end_lineno , end_col_offset , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>some<S2SV_blank>sort<S2SV_blank>of<S2SV_blank>stmt,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%R\" , obj ) ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; expr_ty returns ; string type_comment <S2SV_ModStart> ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_ModStart> , returns , type_comment , <S2SV_ModStart> ; expr_ty returns ; string type_comment <S2SV_ModStart> ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_ModStart> , returns , type_comment , <S2SV_ModStart> expr_ty value ; string type_comment ; <S2SV_ModStart> ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_ModStart> , value , type_comment , <S2SV_ModStart> asdl_seq * orelse ; string type_comment <S2SV_ModStart> ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_ModStart> , orelse , type_comment , <S2SV_ModStart> asdl_seq * orelse ; string type_comment <S2SV_ModStart> ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_ModStart> , orelse , type_comment , <S2SV_ModStart> * body ; string type_comment ; <S2SV_ModStart> ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_ModStart> items , body , type_comment <S2SV_ModStart> asdl_seq * body ; string type_comment <S2SV_ModStart> ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } <S2SV_ModStart> , body , type_comment ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7862\n\n```\nCWE-787 static int decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { PicContext * s = avctx -> priv_data ; AVFrame * frame = data ; uint32_t * palette ; int bits_per_plane , bpp , etype , esize , npal , pos_after_pal ; int i , x , y , plane , tmp , ret , val ; bytestream2_init ( & s -> g , avpkt -> data , avpkt -> size ) ; if ( bytestream2_get_bytes_left ( & s -> g ) < 11 ) return AVERROR_INVALIDDATA ; if ( bytestream2_get_le16u ( & s -> g ) != 0x1234 ) return AVERROR_INVALIDDATA ; s -> width = bytestream2_get_le16u ( & s -> g ) ; s -> height = bytestream2_get_le16u ( & s -> g ) ; bytestream2_skip ( & s -> g , 4 ) ; tmp = bytestream2_get_byteu ( & s -> g ) ; bits_per_plane = tmp & 0xF ; s -> nb_planes = ( tmp >> 4 ) + 1 ; bpp = bits_per_plane * s -> nb_planes ; if ( bits_per_plane > 8 || bpp < 1 || bpp > 32 ) { avpriv_request_sample ( avctx , \"Unsupported<S2SV_blank>bit<S2SV_blank>depth\" ) ; return AVERROR_PATCHWELCOME ; } if ( bytestream2_peek_byte ( & s -> g ) == 0xFF || bpp == 1 || bpp == 4 || bpp == 8 ) { bytestream2_skip ( & s -> g , 2 ) ; etype = bytestream2_get_le16 ( & s -> g ) ; esize = bytestream2_get_le16 ( & s -> g ) ; if ( bytestream2_get_bytes_left ( & s -> g ) < esize ) return AVERROR_INVALIDDATA ; } else { etype = - 1 ; esize = 0 ; } avctx -> pix_fmt = AV_PIX_FMT_PAL8 ; if ( av_image_check_size ( s -> width , s -> height , 0 , avctx ) < 0 ) return - 1 ; <S2SV_StartBug> if ( s -> width != avctx -> width && s -> height != avctx -> height ) { <S2SV_EndBug> ret = ff_set_dimensions ( avctx , s -> width , s -> height ) ; if ( ret < 0 ) return ret ; } if ( ( ret = ff_get_buffer ( avctx , frame , 0 ) ) < 0 ) return ret ; memset ( frame -> data [ 0 ] , 0 , s -> height * frame -> linesize [ 0 ] ) ; frame -> pict_type = AV_PICTURE_TYPE_I ; frame -> palette_has_changed = 1 ; pos_after_pal = bytestream2_tell ( & s -> g ) + esize ; palette = ( uint32_t * ) frame -> data [ 1 ] ; if ( etype == 1 && esize > 1 && bytestream2_peek_byte ( & s -> g ) < 6 ) { int idx = bytestream2_get_byte ( & s -> g ) ; npal = 4 ; for ( i = 0 ; i < npal ; i ++ ) palette [ i ] = ff_cga_palette [ cga_mode45_index [ idx ] [ i ] ] ; } else if ( etype == 2 ) { npal = FFMIN ( esize , 16 ) ; for ( i = 0 ; i < npal ; i ++ ) { int pal_idx = bytestream2_get_byte ( & s -> g ) ; palette [ i ] = ff_cga_palette [ FFMIN ( pal_idx , 15 ) ] ; } } else if ( etype == 3 ) { npal = FFMIN ( esize , 16 ) ; for ( i = 0 ; i < npal ; i ++ ) { int pal_idx = bytestream2_get_byte ( & s -> g ) ; palette [ i ] = ff_ega_palette [ FFMIN ( pal_idx , 63 ) ] ; } } else if ( etype == 4 || etype == 5 ) { npal = FFMIN ( esize / 3 , 256 ) ; for ( i = 0 ; i < npal ; i ++ ) { palette [ i ] = bytestream2_get_be24 ( & s -> g ) << 2 ; palette [ i ] |= 0xFFU << 24 | palette [ i ] >> 6 & 0x30303 ; } } else { if ( bpp == 1 ) { npal = 2 ; palette [ 0 ] = 0xFF000000 ; palette [ 1 ] = 0xFFFFFFFF ; } else if ( bpp == 2 ) { npal = 4 ; for ( i = 0 ; i < npal ; i ++ ) palette [ i ] = ff_cga_palette [ cga_mode45_index [ 0 ] [ i ] ] ; } else { npal = 16 ; memcpy ( palette , ff_cga_palette , npal * 4 ) ; } } memset ( palette + npal , 0 , AVPALETTE_SIZE - npal * 4 ) ; bytestream2_seek ( & s -> g , pos_after_pal , SEEK_SET ) ; val = 0 ; y = s -> height - 1 ; if ( bytestream2_get_le16 ( & s -> g ) ) { x = 0 ; plane = 0 ; while ( bytestream2_get_bytes_left ( & s -> g ) >= 6 ) { int stop_size , marker , t1 , t2 ; t1 = bytestream2_get_bytes_left ( & s -> g ) ; t2 = bytestream2_get_le16 ( & s -> g ) ; stop_size = t1 - FFMIN ( t1 , t2 ) ; bytestream2_skip ( & s -> g , 2 ) ; marker = bytestream2_get_byte ( & s -> g ) ; while ( plane < s -> nb_planes && bytestream2_get_bytes_left ( & s -> g ) > stop_size ) { int run = 1 ; val = bytestream2_get_byte ( & s -> g ) ; if ( val == marker ) { run = bytestream2_get_byte ( & s -> g ) ; if ( run == 0 ) run = bytestream2_get_le16 ( & s -> g ) ; val = bytestream2_get_byte ( & s -> g ) ; } if ( ! bytestream2_get_bytes_left ( & s -> g ) ) break ; if ( bits_per_plane == 8 ) { picmemset_8bpp ( s , frame , val , run , & x , & y ) ; if ( y < 0 ) goto finish ; } else { picmemset ( s , frame , val , run , & x , & y , & plane , bits_per_plane ) ; } } } if ( x < avctx -> width ) { int run = ( y + 1 ) * avctx -> width - x ; if ( bits_per_plane == 8 ) picmemset_8bpp ( s , frame , val , run , & x , & y ) ; else picmemset ( s , frame , val , run / ( 8 / bits_per_plane ) , & x , & y , & plane , bits_per_plane ) ; } } else { while ( y >= 0 && bytestream2_get_bytes_left ( & s -> g ) > 0 ) { memcpy ( frame -> data [ 0 ] + y * frame -> linesize [ 0 ] , s -> g . buffer , FFMIN ( avctx -> width , bytestream2_get_bytes_left ( & s -> g ) ) ) ; bytestream2_skip ( & s -> g , avctx -> width ) ; y -- ; } } finish : * got_frame = 1 ; return avpkt -> size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> avctx -> width || <S2SV_ModEnd> s -> height\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3212\n\n```\nCWE-362 static void sctp_sock_migrate ( struct sock * oldsk , struct sock * newsk , struct sctp_association * assoc , sctp_socket_type_t type ) { struct sctp_sock * oldsp = sctp_sk ( oldsk ) ; struct sctp_sock * newsp = sctp_sk ( newsk ) ; struct sctp_bind_bucket * pp ; struct sctp_endpoint * newep = newsp -> ep ; struct sk_buff * skb , * tmp ; struct sctp_ulpevent * event ; struct sctp_bind_hashbucket * head ; <S2SV_StartBug> struct list_head tmplist ; <S2SV_EndBug> newsk -> sk_sndbuf = oldsk -> sk_sndbuf ; newsk -> sk_rcvbuf = oldsk -> sk_rcvbuf ; <S2SV_StartBug> if ( oldsp -> do_auto_asconf ) { <S2SV_EndBug> memcpy ( & tmplist , & newsp -> auto_asconf_list , sizeof ( tmplist ) ) ; inet_sk_copy_descendant ( newsk , oldsk ) ; memcpy ( & newsp -> auto_asconf_list , & tmplist , sizeof ( tmplist ) ) ; } else inet_sk_copy_descendant ( newsk , oldsk ) ; newsp -> ep = newep ; newsp -> hmac = NULL ; head = & sctp_port_hashtable [ sctp_phashfn ( sock_net ( oldsk ) , inet_sk ( oldsk ) -> inet_num ) ] ; local_bh_disable ( ) ; spin_lock ( & head -> lock ) ; pp = sctp_sk ( oldsk ) -> bind_hash ; sk_add_bind_node ( newsk , & pp -> owner ) ; sctp_sk ( newsk ) -> bind_hash = pp ; inet_sk ( newsk ) -> inet_num = inet_sk ( oldsk ) -> inet_num ; spin_unlock ( & head -> lock ) ; local_bh_enable ( ) ; sctp_bind_addr_dup ( & newsp -> ep -> base . bind_addr , & oldsp -> ep -> base . bind_addr , GFP_KERNEL ) ; sctp_skb_for_each ( skb , & oldsk -> sk_receive_queue , tmp ) { event = sctp_skb2event ( skb ) ; if ( event -> asoc == assoc ) { __skb_unlink ( skb , & oldsk -> sk_receive_queue ) ; __skb_queue_tail ( & newsk -> sk_receive_queue , skb ) ; sctp_skb_set_owner_r_frag ( skb , newsk ) ; } } skb_queue_head_init ( & newsp -> pd_lobby ) ; atomic_set ( & sctp_sk ( newsk ) -> pd_mode , assoc -> ulpq . pd_mode ) ; if ( atomic_read ( & sctp_sk ( oldsk ) -> pd_mode ) ) { struct sk_buff_head * queue ; if ( assoc -> ulpq . pd_mode ) { queue = & newsp -> pd_lobby ; } else queue = & newsk -> sk_receive_queue ; sctp_skb_for_each ( skb , & oldsp -> pd_lobby , tmp ) { event = sctp_skb2event ( skb ) ; if ( event -> asoc == assoc ) { __skb_unlink ( skb , & oldsp -> pd_lobby ) ; __skb_queue_tail ( queue , skb ) ; sctp_skb_set_owner_r_frag ( skb , newsk ) ; } } if ( assoc -> ulpq . pd_mode ) sctp_clear_pd ( oldsk , NULL ) ; } sctp_skb_for_each ( skb , & assoc -> ulpq . reasm , tmp ) sctp_skb_set_owner_r_frag ( skb , newsk ) ; sctp_skb_for_each ( skb , & assoc -> ulpq . lobby , tmp ) sctp_skb_set_owner_r_frag ( skb , newsk ) ; newsp -> type = type ; lock_sock_nested ( newsk , SINGLE_DEPTH_NESTING ) ; sctp_assoc_migrate ( assoc , newsk ) ; if ( sctp_state ( assoc , CLOSED ) && sctp_style ( newsk , TCP ) ) newsk -> sk_shutdown |= RCV_SHUTDOWN ; newsk -> sk_state = SCTP_SS_ESTABLISHED ; release_sock ( newsk ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * head ; <S2SV_ModEnd> newsk -> sk_sndbuf <S2SV_ModStart> -> sk_rcvbuf ; sctp_copy_descendant <S2SV_ModEnd> ( newsk ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4653\n\n```\nCWE-416 int snd_ctl_replace ( struct snd_card * card , struct snd_kcontrol * kcontrol , bool add_on_replace ) { <S2SV_StartBug> struct snd_ctl_elem_id id ; <S2SV_EndBug> unsigned int idx ; struct snd_kcontrol * old ; int ret ; if ( ! kcontrol ) return - EINVAL ; if ( snd_BUG_ON ( ! card || ! kcontrol -> info ) ) { ret = - EINVAL ; goto error ; } id = kcontrol -> id ; down_write ( & card -> controls_rwsem ) ; old = snd_ctl_find_id ( card , & id ) ; if ( ! old ) { if ( add_on_replace ) goto add ; up_write ( & card -> controls_rwsem ) ; ret = - EINVAL ; goto error ; } ret = snd_ctl_remove ( card , old ) ; if ( ret < 0 ) { up_write ( & card -> controls_rwsem ) ; goto error ; } add : if ( snd_ctl_find_hole ( card , kcontrol -> count ) < 0 ) { up_write ( & card -> controls_rwsem ) ; ret = - ENOMEM ; goto error ; } list_add_tail ( & kcontrol -> list , & card -> controls ) ; card -> controls_count += kcontrol -> count ; kcontrol -> id . numid = card -> last_numid + 1 ; card -> last_numid += kcontrol -> count ; <S2SV_StartBug> up_write ( & card -> controls_rwsem ) ; <S2SV_EndBug> <S2SV_StartBug> for ( idx = 0 ; idx < kcontrol -> count ; idx ++ , id . index ++ , id . numid ++ ) <S2SV_EndBug> snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_ADD , & id ) ; return 0 ; error : snd_ctl_free_one ( kcontrol ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct snd_ctl_elem_id id ; unsigned int count <S2SV_ModStart> -> count ; count = kcontrol -> count ; <S2SV_ModStart> ; idx < <S2SV_ModEnd> count ; idx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18218\n\n```\nCWE-787 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; size_t i , o4 , nelements , j , slen , left ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , cdf_offset ( sst -> sst_tab , offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } if ( cdf_check_stream_offset ( sst , h , shp , sh . sh_len , __LINE__ ) == - 1 ) goto out ; sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; inp = cdf_grow_info ( info , maxcount , sh . sh_properties ) ; if ( inp == NULL ) goto out ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , cdf_offset ( sst -> sst_tab , offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , cdf_offset ( shp , sh . sh_len ) ) ; if ( p >= e || cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { if ( ( q = cdf_get_property_info_pos ( sst , h , p , e , i ) ) == NULL ) goto out ; inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; left = CAST ( size_t , e - q ) ; if ( left < sizeof ( uint32_t ) ) { DPRINTF ( ( \"short<S2SV_blank>info<S2SV_blank>(no<S2SV_blank>type)_\\\\n\" ) ) ; goto out ; } inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%\" SIZE_T_FORMAT \"u)<S2SV_blank>id=%#x<S2SV_blank>type=%#x<S2SV_blank>offs=%#tx,%#x\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , offs ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { if ( left < sizeof ( uint32_t ) * 2 ) { DPRINTF ( ( \"missing<S2SV_blank>CDF_VECTOR<S2SV_blank>length\\\\n\" ) ) ; goto out ; } nelements = CDF_GETUINT32 ( q , 1 ) ; <S2SV_StartBug> if ( nelements == 0 ) { <S2SV_EndBug> <S2SV_StartBug> DPRINTF ( ( \"CDF_VECTOR<S2SV_blank>with<S2SV_blank>nelements<S2SV_blank>==<S2SV_blank>0\\\\n\" ) ) ; <S2SV_EndBug> goto out ; } slen = 2 ; } else { nelements = 1 ; slen = 1 ; } o4 = slen * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( ! cdf_copy_info ( & inp [ i ] , & q [ o4 ] , e , sizeof ( int16_t ) ) ) goto unknown ; break ; case CDF_SIGNED32 : case CDF_BOOL : case CDF_UNSIGNED32 : case CDF_FLOAT : if ( ! cdf_copy_info ( & inp [ i ] , & q [ o4 ] , e , sizeof ( int32_t ) ) ) goto unknown ; break ; case CDF_SIGNED64 : case CDF_UNSIGNED64 : case CDF_DOUBLE : case CDF_FILETIME : if ( ! cdf_copy_info ( & inp [ i ] , & q [ o4 ] , e , sizeof ( int64_t ) ) ) goto unknown ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; inp = cdf_grow_info ( info , maxcount , nelements ) ; if ( inp == NULL ) goto out ; inp += nelem ; } <S2SV_StartBug> DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , <S2SV_EndBug> nelements ) ) ; for ( j = 0 ; j < nelements && i < sh . sh_properties ; j ++ , i ++ ) { uint32_t l ; if ( o4 + sizeof ( uint32_t ) > left ) goto out ; l = CDF_GETUINT32 ( q , slen ) ; o4 += sizeof ( uint32_t ) ; if ( o4 + l > left ) goto out ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = CAST ( const char * , CAST ( const void * , & q [ o4 ] ) ) ; DPRINTF ( ( \"o=%\" SIZE_T_FORMAT \"u<S2SV_blank>l=%d(%\" SIZE_T_FORMAT \"u),<S2SV_blank>t=%\" SIZE_T_FORMAT \"u<S2SV_blank>s=%s\\\\n\" , o4 , l , CDF_ROUND ( l , sizeof ( l ) ) , left , inp [ i ] . pi_str . s_buf ) ) ; if ( l & 1 ) l ++ ; slen += l >> 1 ; o4 = slen * sizeof ( uint32_t ) ; } i -- ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : memset ( & inp [ i ] . pi_val , 0 , sizeof ( inp [ i ] . pi_val ) ) ; DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%#x\\\\n\" , inp [ i ] . pi_type ) ) ; break ; } } return 0 ; out : free ( * info ) ; * info = NULL ; * count = 0 ; * maxcount = 0 ; errno = EFTYPE ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( nelements > CDF_ELEMENT_LIMIT || nelements <S2SV_ModStart> DPRINTF ( ( \"CDF_VECTOR<S2SV_blank>with<S2SV_blank>nelements<S2SV_blank>==<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , nelements <S2SV_ModEnd> ) ) ; <S2SV_ModStart> nelem ; } <S2SV_ModEnd> for ( j\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4176\n\n```\nCWE-200 static void umount_tree ( struct mount * mnt , enum umount_tree_flags how ) { LIST_HEAD ( tmp_list ) ; struct mount * p ; if ( how & UMOUNT_PROPAGATE ) propagate_mount_unlock ( mnt ) ; for ( p = mnt ; p ; p = next_mnt ( p , mnt ) ) { p -> mnt . mnt_flags |= MNT_UMOUNT ; list_move ( & p -> mnt_list , & tmp_list ) ; } list_for_each_entry ( p , & tmp_list , mnt_list ) { list_del_init ( & p -> mnt_child ) ; } if ( how & UMOUNT_PROPAGATE ) propagate_umount ( & tmp_list ) ; while ( ! list_empty ( & tmp_list ) ) { bool disconnect ; p = list_first_entry ( & tmp_list , struct mount , mnt_list ) ; list_del_init ( & p -> mnt_expire ) ; list_del_init ( & p -> mnt_list ) ; __touch_mnt_namespace ( p -> mnt_ns ) ; p -> mnt_ns = NULL ; if ( how & UMOUNT_SYNC ) p -> mnt . mnt_flags |= MNT_SYNC_UMOUNT ; <S2SV_StartBug> disconnect = ! IS_MNT_LOCKED_AND_LAZY ( p ) ; <S2SV_EndBug> pin_insert_group ( & p -> mnt_umount , & p -> mnt_parent -> mnt , disconnect ? & unmounted : NULL ) ; if ( mnt_has_parent ( p ) ) { mnt_add_count ( p -> mnt_parent , - 1 ) ; if ( ! disconnect ) { list_add_tail ( & p -> mnt_child , & p -> mnt_parent -> mnt_mounts ) ; } else { umount_mnt ( p ) ; } } change_mnt_propagation ( p , MS_PRIVATE ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> disconnect = ! ( ( ( how & UMOUNT_CONNECTED ) && mnt_has_parent ( p ) && ( p -> mnt_parent -> mnt . mnt_flags & MNT_UMOUNT ) ) || <S2SV_ModStart> IS_MNT_LOCKED_AND_LAZY ( p )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010315\n\n```\nCWE-369 int ParseDsdiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t infilesize , total_samples ; DFFFileHeader dff_file_header ; DFFChunkHeader dff_chunk_header ; uint32_t bcount ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & dff_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & dff_file_header ) + 4 , sizeof ( DFFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( DFFFileHeader ) - 4 ) || strncmp ( dff_file_header . formType , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_file_header , sizeof ( DFFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackBigEndianToNative ( & dff_file_header , DFFFileHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && dff_file_header . ckDataSize && dff_file_header . ckDataSize + 1 && dff_file_header . ckDataSize + 12 != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file<S2SV_blank>(by<S2SV_blank>total<S2SV_blank>size)!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"file<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_file_header . ckDataSize ) ; # endif while ( 1 ) { if ( ! DoReadFile ( infile , & dff_chunk_header , sizeof ( DFFChunkHeader ) , & bcount ) || bcount != sizeof ( DFFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_chunk_header , sizeof ( DFFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( debug_logging_mode ) error_line ( \"chunk<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_chunk_header . ckDataSize ) ; if ( ! strncmp ( dff_chunk_header . ckID , \"FVER\" , 4 ) ) { uint32_t version ; if ( dff_chunk_header . ckDataSize != sizeof ( version ) || ! DoReadFile ( infile , & version , sizeof ( version ) , & bcount ) || bcount != sizeof ( version ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & version , sizeof ( version ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & version , \"L\" ) ; if ( debug_logging_mode ) error_line ( \"dsdiff<S2SV_blank>file<S2SV_blank>version<S2SV_blank>=<S2SV_blank>0x%08x\" , version ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"PROP\" , 4 ) ) { char * prop_chunk ; if ( dff_chunk_header . ckDataSize < 4 || dff_chunk_header . ckDataSize > 1024 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>total\" , ( int ) dff_chunk_header . ckDataSize ) ; prop_chunk = malloc ( ( size_t ) dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize , & bcount ) || bcount != dff_chunk_header . ckDataSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } if ( ! strncmp ( prop_chunk , \"SND<S2SV_blank>\" , 4 ) ) { char * cptr = prop_chunk + 4 , * eptr = prop_chunk + dff_chunk_header . ckDataSize ; <S2SV_StartBug> uint16_t numChannels , chansSpecified , chanMask = 0 ; <S2SV_EndBug> uint32_t sampleRate ; while ( eptr - cptr >= sizeof ( dff_chunk_header ) ) { memcpy ( & dff_chunk_header , cptr , sizeof ( dff_chunk_header ) ) ; cptr += sizeof ( dff_chunk_header ) ; WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( dff_chunk_header . ckDataSize > 0 && dff_chunk_header . ckDataSize <= eptr - cptr ) { if ( ! strncmp ( dff_chunk_header . ckID , \"FS<S2SV_blank><S2SV_blank>\" , 4 ) && dff_chunk_header . ckDataSize == 4 ) { memcpy ( & sampleRate , cptr , sizeof ( sampleRate ) ) ; WavpackBigEndianToNative ( & sampleRate , \"L\" ) ; cptr += dff_chunk_header . ckDataSize ; if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>sample<S2SV_blank>rate<S2SV_blank>of<S2SV_blank>%u<S2SV_blank>Hz\" , sampleRate ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CHNL\" , 4 ) && dff_chunk_header . ckDataSize >= 2 ) { memcpy ( & numChannels , cptr , sizeof ( numChannels ) ) ; WavpackBigEndianToNative ( & numChannels , \"S\" ) ; cptr += sizeof ( numChannels ) ; chansSpecified = ( int ) ( dff_chunk_header . ckDataSize - sizeof ( numChannels ) ) / 4 ; <S2SV_StartBug> if ( numChannels < chansSpecified || numChannels < 1 ) { <S2SV_EndBug> error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } while ( chansSpecified -- ) { if ( ! strncmp ( cptr , \"SLFT\" , 4 ) || ! strncmp ( cptr , \"MLFT\" , 4 ) ) chanMask |= 0x1 ; else if ( ! strncmp ( cptr , \"SRGT\" , 4 ) || ! strncmp ( cptr , \"MRGT\" , 4 ) ) chanMask |= 0x2 ; else if ( ! strncmp ( cptr , \"LS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x10 ; else if ( ! strncmp ( cptr , \"RS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x20 ; else if ( ! strncmp ( cptr , \"C<S2SV_blank><S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x4 ; else if ( ! strncmp ( cptr , \"LFE<S2SV_blank>\" , 4 ) ) chanMask |= 0x8 ; else if ( debug_logging_mode ) error_line ( \"undefined<S2SV_blank>channel<S2SV_blank>ID<S2SV_blank>%c%c%c%c\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; cptr += 4 ; } if ( debug_logging_mode ) error_line ( \"%d<S2SV_blank>channels,<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>0x%08x\" , numChannels , chanMask ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CMPR\" , 4 ) && dff_chunk_header . ckDataSize >= 4 ) { if ( strncmp ( cptr , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"DSDIFF<S2SV_blank>files<S2SV_blank>must<S2SV_blank>be<S2SV_blank>uncompressed,<S2SV_blank>not<S2SV_blank>\\\\\"%c%c%c%c\\\\\"!\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } cptr += dff_chunk_header . ckDataSize ; } else { if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP/SND<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; cptr += dff_chunk_header . ckDataSize ; } } else { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } } if ( chanMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>DSDIFF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( chanMask ) config -> channel_mask = chanMask ; config -> bits_per_sample = 8 ; config -> bytes_per_sample = 1 ; config -> num_channels = numChannels ; config -> sample_rate = sampleRate / 8 ; config -> qmode |= QMODE_DSD_MSB_FIRST ; } else if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>unknown<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , prop_chunk [ 0 ] , prop_chunk [ 1 ] , prop_chunk [ 2 ] , prop_chunk [ 3 ] , dff_chunk_header . ckDataSize ) ; free ( prop_chunk ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"DSD<S2SV_blank>\" , 4 ) ) { <S2SV_StartBug> total_samples = dff_chunk_header . ckDataSize / config -> num_channels ; <S2SV_EndBug> break ; } else { int bytes_to_copy = ( int ) ( ( ( dff_chunk_header . ckDataSize ) + 1 ) & ~ ( int64_t ) 1 ) ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( debug_logging_mode ) error_line ( \"setting<S2SV_blank>configuration<S2SV_blank>with<S2SV_blank>%lld<S2SV_blank>samples\" , total_samples ) ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint16_t numChannels = 0 <S2SV_ModStart> numChannels < 1 || numChannels > 256 <S2SV_ModStart> ) ) { if ( ! config -> num_channels ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3570\n\n```\nCWE-310 int test_sqr ( BIO * bp , BN_CTX * ctx ) { <S2SV_StartBug> BIGNUM a , c , d , e ; <S2SV_EndBug> <S2SV_StartBug> int i ; <S2SV_EndBug> BN_init ( & a ) ; BN_init ( & c ) ; BN_init ( & d ) ; BN_init ( & e ) ; for ( i = 0 ; i < num0 ; i ++ ) { <S2SV_StartBug> BN_bntest_rand ( & a , 40 + i * 10 , 0 , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> a . neg = rand_neg ( ) ; <S2SV_EndBug> <S2SV_StartBug> BN_sqr ( & c , & a , ctx ) ; <S2SV_EndBug> if ( bp != NULL ) { if ( ! results ) { <S2SV_StartBug> BN_print ( bp , & a ) ; <S2SV_EndBug> BIO_puts ( bp , \"<S2SV_blank>*<S2SV_blank>\" ) ; <S2SV_StartBug> BN_print ( bp , & a ) ; <S2SV_EndBug> BIO_puts ( bp , \"<S2SV_blank>-<S2SV_blank>\" ) ; } <S2SV_StartBug> BN_print ( bp , & c ) ; <S2SV_EndBug> BIO_puts ( bp , \"\\\\n\" ) ; } <S2SV_StartBug> BN_div ( & d , & e , & c , & a , ctx ) ; <S2SV_EndBug> <S2SV_StartBug> BN_sub ( & d , & d , & a ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! BN_is_zero ( & d ) || ! BN_is_zero ( & e ) ) <S2SV_EndBug> { <S2SV_StartBug> fprintf ( stderr , \"Square<S2SV_blank>test<S2SV_blank>failed!\\\\n\" ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> } } BN_free ( & a ) ; BN_free ( & c ) ; BN_free ( & d ) ; BN_free ( & e ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { BIGNUM * a , * c , * d , * <S2SV_ModEnd> e ; int <S2SV_ModStart> ; int i , ret = 0 ; a = BN_new ( ) ; c = BN_new ( ) ; d = BN_new ( ) ; e = BN_new ( ) ; if ( a == NULL || c == NULL || d == NULL || e == NULL ) { goto err ; } <S2SV_ModEnd> for ( i <S2SV_ModStart> { BN_bntest_rand ( <S2SV_ModEnd> a , 40 <S2SV_ModStart> ) ; a -> <S2SV_ModEnd> neg = rand_neg <S2SV_ModStart> ; BN_sqr ( c , <S2SV_ModEnd> a , ctx <S2SV_ModStart> ( bp , <S2SV_ModEnd> a ) ; <S2SV_ModStart> ( bp , <S2SV_ModEnd> a ) ; <S2SV_ModStart> ( bp , <S2SV_ModEnd> c ) ; <S2SV_ModStart> } BN_div ( d , e , c , <S2SV_ModEnd> a , ctx <S2SV_ModStart> ; BN_sub ( d , d , <S2SV_ModEnd> a ) ; <S2SV_ModStart> ! BN_is_zero ( <S2SV_ModEnd> d ) || <S2SV_ModStart> ! BN_is_zero ( e ) ) { fprintf ( stderr , \"Square<S2SV_blank>test<S2SV_blank>failed!\\\\n\" ) ; goto err ; } } BN_hex2bn ( & a , \"80000000000000008000000000000001FFFFFFFFFFFFFFFE0000000000000000\" ) ; BN_sqr ( c , a , ctx ) ; if ( bp != NULL ) { if ( ! results ) { BN_print ( bp , a ) ; BIO_puts ( bp , \"<S2SV_blank>*<S2SV_blank>\" ) ; BN_print ( bp , a ) ; BIO_puts ( bp , \"<S2SV_blank>-<S2SV_blank>\" ) ; } BN_print ( bp , c ) ; BIO_puts ( bp , \"\\\\n\" ) ; } BN_mul ( d , a , a , ctx ) ; if ( BN_cmp ( c , d <S2SV_ModEnd> ) ) { <S2SV_ModStart> ( stderr , \"Square<S2SV_blank>test<S2SV_blank>failed:<S2SV_blank>BN_sqr<S2SV_blank>and<S2SV_blank>BN_mul<S2SV_blank>produce<S2SV_blank>\" \"different<S2SV_blank>results!\\\\n\" ) ; goto err ; } BN_hex2bn ( & a , \"80000000000000000000000080000001FFFFFFFE000000000000000000000000\" ) ; BN_sqr ( c , a , ctx ) ; if ( bp != NULL ) { if ( ! results ) { BN_print ( bp , a ) ; BIO_puts ( bp , \"<S2SV_blank>*<S2SV_blank>\" ) ; BN_print ( bp , a ) ; BIO_puts ( bp , \"<S2SV_blank>-<S2SV_blank>\" ) ; } BN_print ( bp , c ) ; BIO_puts ( bp , \"\\\\n\" ) ; } BN_mul ( d , a , a , ctx ) ; if ( BN_cmp ( c , d ) ) { fprintf ( stderr , \"Square<S2SV_blank>test<S2SV_blank>failed:<S2SV_blank>BN_sqr<S2SV_blank>and<S2SV_blank>BN_mul<S2SV_blank>produce<S2SV_blank>\" \"different<S2SV_blank>results!\\\\n\" ) ; goto err ; } ret = 1 ; err : if ( a != NULL ) BN_free ( a ) ; if ( c != NULL ) BN_free ( c ) ; if ( d != NULL ) BN_free ( d ) ; if ( e != NULL ) BN_free ( e <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8126\n\n```\nCWE-119 png_charp PNGAPI png_convert_to_rfc1123 ( png_structp png_ptr , png_timep ptime ) { static PNG_CONST char short_months [ 12 ] [ 4 ] = { \"Jan\" , \"Feb\" , \"Mar\" , \"Apr\" , \"May\" , \"Jun\" , \"Jul\" , \"Aug\" , \"Sep\" , \"Oct\" , \"Nov\" , \"Dec\" } ; if ( png_ptr == NULL ) return ( NULL ) ; if ( png_ptr -> time_buffer == NULL ) { png_ptr -> time_buffer = ( png_charp ) png_malloc ( png_ptr , ( png_uint_32 ) ( 29 * png_sizeof ( char ) ) ) ; } # ifdef _WIN32_WCE { wchar_t time_buf [ 29 ] ; wsprintf ( time_buf , TEXT ( \"%d<S2SV_blank>%S<S2SV_blank>%d<S2SV_blank>%02d:%02d:%02d<S2SV_blank>+0000\" ) , <S2SV_StartBug> ptime -> day % 32 , short_months [ ( ptime -> month - 1 ) % 12 ] , <S2SV_EndBug> ptime -> year , ptime -> hour % 24 , ptime -> minute % 60 , ptime -> second % 61 ) ; WideCharToMultiByte ( CP_ACP , 0 , time_buf , - 1 , png_ptr -> time_buffer , 29 , NULL , NULL ) ; } # else # ifdef USE_FAR_KEYWORD { char near_time_buf [ 29 ] ; png_snprintf6 ( near_time_buf , 29 , \"%d<S2SV_blank>%s<S2SV_blank>%d<S2SV_blank>%02d:%02d:%02d<S2SV_blank>+0000\" , <S2SV_StartBug> ptime -> day % 32 , short_months [ ( ptime -> month - 1 ) % 12 ] , <S2SV_EndBug> ptime -> year , ptime -> hour % 24 , ptime -> minute % 60 , ptime -> second % 61 ) ; png_memcpy ( png_ptr -> time_buffer , near_time_buf , 29 * png_sizeof ( char ) ) ; } # else png_snprintf6 ( png_ptr -> time_buffer , 29 , \"%d<S2SV_blank>%s<S2SV_blank>%d<S2SV_blank>%02d:%02d:%02d<S2SV_blank>+0000\" , <S2SV_StartBug> ptime -> day % 32 , short_months [ ( ptime -> month - 1 ) % 12 ] , <S2SV_EndBug> ptime -> year , ptime -> hour % 24 , ptime -> minute % 60 , ptime -> second % 61 ) ; # endif # endif return ( ( png_charp ) png_ptr -> time_buffer ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> month - 1U <S2SV_ModEnd> ) % 12 <S2SV_ModStart> -> month - 1U <S2SV_ModEnd> ) % 12 <S2SV_ModStart> -> month - 1U <S2SV_ModEnd> ) % 12\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-255(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20839\n\n```\nCWE-255 static void setup_remaining_vcs ( int src_fd , unsigned src_idx , bool utf8 ) { struct console_font_op cfo = { . op = KD_FONT_OP_GET , . width = UINT_MAX , . height = UINT_MAX , . charcount = UINT_MAX , } ; struct unimapinit adv = { } ; struct unimapdesc unimapd ; _cleanup_free_ struct unipair * unipairs = NULL ; _cleanup_free_ void * fontbuf = NULL ; unsigned i ; int r ; unipairs = new ( struct unipair , USHRT_MAX ) ; if ( ! unipairs ) { log_oom ( ) ; return ; } r = ioctl ( src_fd , KDFONTOP , & cfo ) ; if ( r < 0 ) log_warning_errno ( errno , \"KD_FONT_OP_GET<S2SV_blank>failed<S2SV_blank>while<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>get<S2SV_blank>the<S2SV_blank>font<S2SV_blank>metadata:<S2SV_blank>%m\" ) ; else { if ( cfo . width > 32 || cfo . height > 32 || cfo . charcount > 512 ) log_warning ( \"Invalid<S2SV_blank>font<S2SV_blank>metadata<S2SV_blank>-<S2SV_blank>width:<S2SV_blank>%u<S2SV_blank>(max<S2SV_blank>32),<S2SV_blank>height:<S2SV_blank>%u<S2SV_blank>(max<S2SV_blank>32),<S2SV_blank>count:<S2SV_blank>%u<S2SV_blank>(max<S2SV_blank>512)\" , cfo . width , cfo . height , cfo . charcount ) ; else { fontbuf = malloc_multiply ( ( cfo . width + 7 ) / 8 * 32 , cfo . charcount ) ; if ( ! fontbuf ) { log_oom ( ) ; return ; } cfo . data = fontbuf ; r = ioctl ( src_fd , KDFONTOP , & cfo ) ; if ( r < 0 ) log_warning_errno ( errno , \"KD_FONT_OP_GET<S2SV_blank>failed<S2SV_blank>while<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>read<S2SV_blank>the<S2SV_blank>font<S2SV_blank>data:<S2SV_blank>%m\" ) ; else { unimapd . entries = unipairs ; unimapd . entry_ct = USHRT_MAX ; r = ioctl ( src_fd , GIO_UNIMAP , & unimapd ) ; if ( r < 0 ) log_warning_errno ( errno , \"GIO_UNIMAP<S2SV_blank>failed<S2SV_blank>while<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>read<S2SV_blank>unicode<S2SV_blank>mappings:<S2SV_blank>%m\" ) ; else cfo . op = KD_FONT_OP_SET ; } } } if ( cfo . op != KD_FONT_OP_SET ) log_warning ( \"Fonts<S2SV_blank>will<S2SV_blank>not<S2SV_blank>be<S2SV_blank>copied<S2SV_blank>to<S2SV_blank>remaining<S2SV_blank>consoles\" ) ; for ( i = 1 ; i <= 63 ; i ++ ) { char ttyname [ sizeof ( \"/dev/tty63\" ) ] ; _cleanup_close_ int fd_d = - 1 ; if ( i == src_idx || verify_vc_allocation ( i ) < 0 ) continue ; xsprintf ( ttyname , \"/dev/tty%u\" , i ) ; fd_d = open_terminal ( ttyname , O_RDWR | O_CLOEXEC | O_NOCTTY ) ; if ( fd_d < 0 ) { log_warning_errno ( fd_d , \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>tty%u,<S2SV_blank>fonts<S2SV_blank>will<S2SV_blank>not<S2SV_blank>be<S2SV_blank>copied:<S2SV_blank>%m\" , i ) ; continue ; } <S2SV_StartBug> if ( verify_vc_kbmode ( fd_d ) < 0 ) <S2SV_EndBug> continue ; toggle_utf8 ( ttyname , fd_d , utf8 ) ; if ( cfo . op != KD_FONT_OP_SET ) continue ; r = ioctl ( fd_d , KDFONTOP , & cfo ) ; if ( r < 0 ) { int last_errno , mode ; last_errno = errno ; if ( ioctl ( fd_d , KDGETMODE , & mode ) >= 0 && mode != KD_TEXT ) log_debug ( \"KD_FONT_OP_SET<S2SV_blank>skipped:<S2SV_blank>tty%u<S2SV_blank>is<S2SV_blank>not<S2SV_blank>in<S2SV_blank>text<S2SV_blank>mode\" , i ) ; else log_warning_errno ( last_errno , \"KD_FONT_OP_SET<S2SV_blank>failed,<S2SV_blank>fonts<S2SV_blank>will<S2SV_blank>not<S2SV_blank>be<S2SV_blank>copied<S2SV_blank>to<S2SV_blank>tty%u:<S2SV_blank>%m\" , i ) ; continue ; } r = ioctl ( fd_d , PIO_UNIMAPCLR , & adv ) ; if ( r < 0 ) { log_warning_errno ( errno , \"PIO_UNIMAPCLR<S2SV_blank>failed,<S2SV_blank>unimaps<S2SV_blank>might<S2SV_blank>be<S2SV_blank>incorrect<S2SV_blank>for<S2SV_blank>tty%u:<S2SV_blank>%m\" , i ) ; continue ; } r = ioctl ( fd_d , PIO_UNIMAP , & unimapd ) ; if ( r < 0 ) { log_warning_errno ( errno , \"PIO_UNIMAP<S2SV_blank>failed,<S2SV_blank>unimaps<S2SV_blank>might<S2SV_blank>be<S2SV_blank>incorrect<S2SV_blank>for<S2SV_blank>tty%u:<S2SV_blank>%m\" , i ) ; continue ; } log_debug ( \"Font<S2SV_blank>and<S2SV_blank>unimap<S2SV_blank>successfully<S2SV_blank>copied<S2SV_blank>to<S2SV_blank>%s\" , ttyname ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( vt_verify_kbmode <S2SV_ModEnd> ( fd_d )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0037\n\n```\nCWE-200 static int raptor_rss_parse_start ( raptor_parser * rdf_parser ) { raptor_uri * uri = rdf_parser -> base_uri ; raptor_rss_parser * rss_parser = ( raptor_rss_parser * ) rdf_parser -> context ; int n ; if ( ! uri ) return 1 ; for ( n = 0 ; n < RAPTOR_RSS_NAMESPACES_SIZE ; n ++ ) rss_parser -> nspaces_seen [ n ] = 'N' ; raptor_sax2_set_option ( rss_parser -> sax2 , RAPTOR_OPTION_NO_NET , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_NO_NET ) ) ; raptor_sax2_set_option ( rss_parser -> sax2 , RAPTOR_OPTION_NO_FILE , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_NO_FILE ) ) ; <S2SV_StartBug> if ( rdf_parser -> uri_filter ) <S2SV_EndBug> raptor_sax2_set_uri_filter ( rss_parser -> sax2 , rdf_parser -> uri_filter , rdf_parser -> uri_filter_user_data ) ; raptor_sax2_parse_start ( rss_parser -> sax2 , uri ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; raptor_sax2_set_option ( rss_parser -> sax2 , RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9253\n\n```\nCWE-400 static void fpm_child_init ( struct fpm_worker_pool_s * wp ) { <S2SV_StartBug> fpm_globals . max_requests = wp -> config -> pm_max_requests ; <S2SV_EndBug> if ( 0 > fpm_stdio_init_child ( wp ) || 0 > fpm_log_init_child ( wp ) || 0 > fpm_status_init_child ( wp ) || 0 > fpm_unix_init_child ( wp ) || 0 > fpm_signals_init_child ( ) || 0 > fpm_env_init_child ( wp ) || 0 > fpm_php_init_child ( wp ) ) { zlog ( ZLOG_ERROR , \"[pool<S2SV_blank>%s]<S2SV_blank>child<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>initialize\" , wp -> config -> name ) ; exit ( FPM_EXIT_SOFTWARE ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> config -> pm_max_requests ; fpm_globals . listening_socket = dup ( wp -> listening_socket )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-4650\n\n```\nCWE-119 long fuse_do_ioctl ( struct file * file , unsigned int cmd , unsigned long arg , unsigned int flags ) { struct fuse_file * ff = file -> private_data ; struct fuse_conn * fc = ff -> fc ; struct fuse_ioctl_in inarg = { . fh = ff -> fh , . cmd = cmd , . arg = arg , . flags = flags } ; struct fuse_ioctl_out outarg ; struct fuse_req * req = NULL ; struct page * * pages = NULL ; struct page * iov_page = NULL ; struct iovec * in_iov = NULL , * out_iov = NULL ; unsigned int in_iovs = 0 , out_iovs = 0 , num_pages = 0 , max_pages ; size_t in_size , out_size , transferred ; int err ; BUILD_BUG_ON ( sizeof ( struct iovec ) * FUSE_IOCTL_MAX_IOV > PAGE_SIZE ) ; err = - ENOMEM ; pages = kzalloc ( sizeof ( pages [ 0 ] ) * FUSE_MAX_PAGES_PER_REQ , GFP_KERNEL ) ; iov_page = alloc_page ( GFP_KERNEL ) ; if ( ! pages || ! iov_page ) goto out ; if ( ! ( flags & FUSE_IOCTL_UNRESTRICTED ) ) { struct iovec * iov = page_address ( iov_page ) ; iov -> iov_base = ( void __user * ) arg ; iov -> iov_len = _IOC_SIZE ( cmd ) ; if ( _IOC_DIR ( cmd ) & _IOC_WRITE ) { in_iov = iov ; in_iovs = 1 ; } if ( _IOC_DIR ( cmd ) & _IOC_READ ) { out_iov = iov ; out_iovs = 1 ; } } retry : inarg . in_size = in_size = iov_length ( in_iov , in_iovs ) ; inarg . out_size = out_size = iov_length ( out_iov , out_iovs ) ; out_size = max_t ( size_t , out_size , PAGE_SIZE ) ; max_pages = DIV_ROUND_UP ( max ( in_size , out_size ) , PAGE_SIZE ) ; err = - ENOMEM ; if ( max_pages > FUSE_MAX_PAGES_PER_REQ ) goto out ; while ( num_pages < max_pages ) { pages [ num_pages ] = alloc_page ( GFP_KERNEL | __GFP_HIGHMEM ) ; if ( ! pages [ num_pages ] ) goto out ; num_pages ++ ; } req = fuse_get_req ( fc ) ; if ( IS_ERR ( req ) ) { err = PTR_ERR ( req ) ; req = NULL ; goto out ; } memcpy ( req -> pages , pages , sizeof ( req -> pages [ 0 ] ) * num_pages ) ; req -> num_pages = num_pages ; req -> in . h . opcode = FUSE_IOCTL ; req -> in . h . nodeid = ff -> nodeid ; req -> in . numargs = 1 ; req -> in . args [ 0 ] . size = sizeof ( inarg ) ; req -> in . args [ 0 ] . value = & inarg ; if ( in_size ) { req -> in . numargs ++ ; req -> in . args [ 1 ] . size = in_size ; req -> in . argpages = 1 ; err = fuse_ioctl_copy_user ( pages , in_iov , in_iovs , in_size , false ) ; if ( err ) goto out ; } req -> out . numargs = 2 ; req -> out . args [ 0 ] . size = sizeof ( outarg ) ; req -> out . args [ 0 ] . value = & outarg ; req -> out . args [ 1 ] . size = out_size ; req -> out . argpages = 1 ; req -> out . argvar = 1 ; fuse_request_send ( fc , req ) ; err = req -> out . h . error ; transferred = req -> out . args [ 1 ] . size ; fuse_put_request ( fc , req ) ; req = NULL ; if ( err ) goto out ; if ( outarg . flags & FUSE_IOCTL_RETRY ) { char * vaddr ; err = - EIO ; if ( ! ( flags & FUSE_IOCTL_UNRESTRICTED ) ) goto out ; in_iovs = outarg . in_iovs ; out_iovs = outarg . out_iovs ; err = - ENOMEM ; if ( in_iovs > FUSE_IOCTL_MAX_IOV || out_iovs > FUSE_IOCTL_MAX_IOV || in_iovs + out_iovs > FUSE_IOCTL_MAX_IOV ) goto out ; vaddr = kmap_atomic ( pages [ 0 ] , KM_USER0 ) ; err = fuse_copy_ioctl_iovec ( page_address ( iov_page ) , vaddr , transferred , in_iovs + out_iovs , ( flags & FUSE_IOCTL_COMPAT ) != 0 ) ; kunmap_atomic ( vaddr , KM_USER0 ) ; if ( err ) goto out ; in_iov = page_address ( iov_page ) ; out_iov = in_iov + in_iovs ; <S2SV_StartBug> goto retry ; <S2SV_EndBug> } err = - EIO ; if ( transferred > inarg . out_size ) goto out ; err = fuse_ioctl_copy_user ( pages , out_iov , out_iovs , transferred , true ) ; out : if ( req ) fuse_put_request ( fc , req ) ; if ( iov_page ) __free_page ( iov_page ) ; while ( num_pages ) __free_page ( pages [ -- num_pages ] ) ; kfree ( pages ) ; return err ? err : outarg . result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + in_iovs ; err = fuse_verify_ioctl_iov ( in_iov , in_iovs ) ; if ( err ) goto out ; err = fuse_verify_ioctl_iov ( out_iov , out_iovs ) ; if ( err ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9114\n\n```\nCWE-77 static int save_dev ( blkid_dev dev , FILE * file ) { struct list_head * p ; if ( ! dev || dev -> bid_name [ 0 ] != '/' ) return 0 ; DBG ( SAVE , ul_debug ( \"device<S2SV_blank>%s,<S2SV_blank>type<S2SV_blank>%s\" , dev -> bid_name , dev -> bid_type ? dev -> bid_type : \"(null)\" ) ) ; fprintf ( file , \"<device<S2SV_blank>DEVNO=\\\\\"0x%04lx\\\\\"<S2SV_blank>TIME=\\\\\"%ld.%ld\\\\\"\" , ( unsigned long ) dev -> bid_devno , ( long ) dev -> bid_time , ( long ) dev -> bid_utime ) ; if ( dev -> bid_pri ) fprintf ( file , \"<S2SV_blank>PRI=\\\\\"%d\\\\\"\" , dev -> bid_pri ) ; list_for_each ( p , & dev -> bid_tags ) { blkid_tag tag = list_entry ( p , struct blkid_struct_tag , bit_tags ) ; <S2SV_StartBug> fprintf ( file , \"<S2SV_blank>%s=\\\\\"%s\\\\\"\" , tag -> bit_name , tag -> bit_val ) ; <S2SV_EndBug> } fprintf ( file , \">%s</device>\\\\n\" , dev -> bid_name ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bit_tags ) ; fputc ( '<S2SV_blank>' , file ) ; fputs ( <S2SV_ModEnd> tag -> bit_name <S2SV_ModStart> -> bit_name , file ) ; fputc ( '=' , file ) ; save_quoted ( <S2SV_ModStart> tag -> bit_val , file\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16359\n\n```\nCWE-476 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( shdr -> sh_size < 1 || shdr -> sh_size > SIZE_MAX ) { return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; <S2SV_StartBug> for ( cnt = 0 , i = 0 ; i >= 0 && cnt < shdr -> sh_info && ( ( char * ) defs + i < end ) ; ++ cnt ) { <S2SV_EndBug> Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; char key [ 32 ] = { 0 } ; Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) int vdaux = verdef -> vd_aux ; <S2SV_StartBug> if ( vdaux < 1 ) { <S2SV_EndBug> sdb_free ( sdb_verdef ) ; goto out_error ; } vstart += vdaux ; <S2SV_StartBug> if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { <S2SV_EndBug> sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; <S2SV_StartBug> if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { <S2SV_EndBug> sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; } i += verdef -> vd_next ; } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sh_info && ( end - <S2SV_ModStart> * ) defs > i <S2SV_ModEnd> ) ; ++ <S2SV_ModStart> vdaux < 1 || ( char * ) UINTPTR_MAX - vstart < vdaux <S2SV_ModStart> > end || end - vstart < <S2SV_ModEnd> sizeof ( Elf_ <S2SV_ModStart> Verdaux ) ) <S2SV_ModEnd> ) { sdb_free <S2SV_ModStart> > end || end - vstart < <S2SV_ModEnd> sizeof ( Elf_ <S2SV_ModStart> Verdaux ) ) <S2SV_ModEnd> ) { sdb_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9465\n\n```\nCWE-125 int yr_re_fast_exec ( uint8_t * code , uint8_t * input_data , size_t input_forwards_size , size_t input_backwards_size , int flags , RE_MATCH_CALLBACK_FUNC callback , void * callback_args , int * matches ) { RE_REPEAT_ANY_ARGS * repeat_any_args ; uint8_t * code_stack [ MAX_FAST_RE_STACK ] ; uint8_t * input_stack [ MAX_FAST_RE_STACK ] ; int matches_stack [ MAX_FAST_RE_STACK ] ; uint8_t * ip = code ; uint8_t * input = input_data ; uint8_t * next_input ; uint8_t * next_opcode ; uint8_t mask ; uint8_t value ; int i ; int stop ; int input_incr ; int sp = 0 ; int bytes_matched ; int max_bytes_matched ; max_bytes_matched = flags & RE_FLAGS_BACKWARDS ? ( int ) input_backwards_size : ( int ) input_forwards_size ; input_incr = flags & RE_FLAGS_BACKWARDS ? - 1 : 1 ; if ( flags & RE_FLAGS_BACKWARDS ) input -- ; code_stack [ sp ] = code ; input_stack [ sp ] = input ; matches_stack [ sp ] = 0 ; sp ++ ; while ( sp > 0 ) { sp -- ; ip = code_stack [ sp ] ; input = input_stack [ sp ] ; bytes_matched = matches_stack [ sp ] ; stop = FALSE ; while ( ! stop ) { if ( * ip == RE_OPCODE_MATCH ) { if ( flags & RE_FLAGS_EXHAUSTIVE ) { FAIL_ON_ERROR ( callback ( flags & RE_FLAGS_BACKWARDS ? input + 1 : input_data , bytes_matched , flags , callback_args ) ) ; break ; } else { if ( matches != NULL ) * matches = bytes_matched ; return ERROR_SUCCESS ; } } if ( bytes_matched >= max_bytes_matched ) break ; switch ( * ip ) { case RE_OPCODE_LITERAL : if ( * input == * ( ip + 1 ) ) { bytes_matched ++ ; input += input_incr ; ip += 2 ; } else { stop = TRUE ; } break ; case RE_OPCODE_MASKED_LITERAL : value = * ( int16_t * ) ( ip + 1 ) & 0xFF ; mask = * ( int16_t * ) ( ip + 1 ) >> 8 ; if ( ( * input & mask ) == value ) { bytes_matched ++ ; input += input_incr ; ip += 3 ; } else { stop = TRUE ; } break ; case RE_OPCODE_ANY : bytes_matched ++ ; input += input_incr ; ip += 1 ; break ; case RE_OPCODE_REPEAT_ANY_UNGREEDY : repeat_any_args = ( RE_REPEAT_ANY_ARGS * ) ( ip + 1 ) ; next_opcode = ip + 1 + sizeof ( RE_REPEAT_ANY_ARGS ) ; for ( i = repeat_any_args -> min + 1 ; i <= repeat_any_args -> max ; i ++ ) { <S2SV_StartBug> next_input = input + i * input_incr ; <S2SV_EndBug> if ( bytes_matched + i >= max_bytes_matched ) <S2SV_StartBug> break ; <S2SV_EndBug> if ( * ( next_opcode ) != RE_OPCODE_LITERAL || ( * ( next_opcode ) == RE_OPCODE_LITERAL && * ( next_opcode + 1 ) == * next_input ) ) { if ( sp >= MAX_FAST_RE_STACK ) return - 4 ; code_stack [ sp ] = next_opcode ; input_stack [ sp ] = next_input ; matches_stack [ sp ] = bytes_matched + i ; sp ++ ; } } input += input_incr * repeat_any_args -> min ; bytes_matched += repeat_any_args -> min ; <S2SV_StartBug> ip = next_opcode ; <S2SV_EndBug> break ; default : assert ( FALSE ) ; } } } if ( matches != NULL ) * matches = - 1 ; return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { <S2SV_ModEnd> if ( bytes_matched <S2SV_ModStart> max_bytes_matched ) break ; next_input = input + i * input_incr <S2SV_ModStart> -> min ; bytes_matched = yr_min ( bytes_matched , max_bytes_matched ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 static void tun_net_init ( struct net_device * dev ) { struct tun_struct * tun = netdev_priv ( dev ) ; switch ( tun -> flags & TUN_TYPE_MASK ) { case TUN_TUN_DEV : dev -> netdev_ops = & tun_netdev_ops ; dev -> hard_header_len = 0 ; dev -> addr_len = 0 ; dev -> mtu = 1500 ; dev -> type = ARPHRD_NONE ; dev -> flags = IFF_POINTOPOINT | IFF_NOARP | IFF_MULTICAST ; dev -> tx_queue_len = TUN_READQ_SIZE ; break ; case TUN_TAP_DEV : dev -> netdev_ops = & tap_netdev_ops ; ether_setup ( dev ) ; <S2SV_StartBug> random_ether_addr ( dev -> dev_addr ) ; <S2SV_EndBug> dev -> tx_queue_len = TUN_READQ_SIZE ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dev ) ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_cal_sad ( VP8_COMP * cpi , MACROBLOCKD * xd , MACROBLOCK * x , int recon_yoffset , int near_sadidx [ ] ) { int near_sad [ 8 ] = { 0 } ; BLOCK * b = & x -> block [ 0 ] ; unsigned char * src_y_ptr = * ( b -> base_src ) ; if ( xd -> mb_to_top_edge == 0 && xd -> mb_to_left_edge == 0 ) { near_sad [ 0 ] = near_sad [ 1 ] = near_sad [ 2 ] = INT_MAX ; } else if ( xd -> mb_to_top_edge == 0 ) { near_sad [ 0 ] = near_sad [ 2 ] = INT_MAX ; <S2SV_StartBug> near_sad [ 1 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , xd -> dst . y_buffer - 16 , xd -> dst . y_stride , UINT_MAX ) ; <S2SV_EndBug> } else if ( xd -> mb_to_left_edge == 0 ) { near_sad [ 1 ] = near_sad [ 2 ] = INT_MAX ; <S2SV_StartBug> near_sad [ 0 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , xd -> dst . y_buffer - xd -> dst . y_stride * 16 , xd -> dst . y_stride , UINT_MAX ) ; <S2SV_EndBug> } else { <S2SV_StartBug> near_sad [ 0 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , xd -> dst . y_buffer - xd -> dst . y_stride * 16 , xd -> dst . y_stride , UINT_MAX ) ; <S2SV_EndBug> <S2SV_StartBug> near_sad [ 1 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , xd -> dst . y_buffer - 16 , xd -> dst . y_stride , UINT_MAX ) ; <S2SV_EndBug> <S2SV_StartBug> near_sad [ 2 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , xd -> dst . y_buffer - xd -> dst . y_stride * 16 - 16 , xd -> dst . y_stride , UINT_MAX ) ; <S2SV_EndBug> } if ( cpi -> common . last_frame_type != KEY_FRAME ) { unsigned char * pre_y_buffer = cpi -> common . yv12_fb [ cpi -> common . lst_fb_idx ] . y_buffer + recon_yoffset ; int pre_y_stride = cpi -> common . yv12_fb [ cpi -> common . lst_fb_idx ] . y_stride ; if ( xd -> mb_to_top_edge == 0 ) near_sad [ 4 ] = INT_MAX ; if ( xd -> mb_to_left_edge == 0 ) near_sad [ 5 ] = INT_MAX ; if ( xd -> mb_to_right_edge == 0 ) near_sad [ 6 ] = INT_MAX ; if ( xd -> mb_to_bottom_edge == 0 ) near_sad [ 7 ] = INT_MAX ; if ( near_sad [ 4 ] != INT_MAX ) <S2SV_StartBug> near_sad [ 4 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , pre_y_buffer - pre_y_stride * 16 , pre_y_stride , UINT_MAX ) ; <S2SV_EndBug> if ( near_sad [ 5 ] != INT_MAX ) <S2SV_StartBug> near_sad [ 5 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , pre_y_buffer - 16 , pre_y_stride , UINT_MAX ) ; <S2SV_EndBug> <S2SV_StartBug> near_sad [ 3 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , pre_y_buffer , pre_y_stride , UINT_MAX ) ; <S2SV_EndBug> if ( near_sad [ 6 ] != INT_MAX ) <S2SV_StartBug> near_sad [ 6 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , pre_y_buffer + 16 , pre_y_stride , UINT_MAX ) ; <S2SV_EndBug> if ( near_sad [ 7 ] != INT_MAX ) <S2SV_StartBug> near_sad [ 7 ] = cpi -> fn_ptr [ BLOCK_16X16 ] . sdf ( src_y_ptr , b -> src_stride , pre_y_buffer + pre_y_stride * 16 , pre_y_stride , UINT_MAX ) ; <S2SV_EndBug> } if ( cpi -> common . last_frame_type != KEY_FRAME ) { insertsortsad ( near_sad , near_sadidx , 8 ) ; } else { insertsortsad ( near_sad , near_sadidx , 3 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dst . y_stride <S2SV_ModEnd> ) ; } <S2SV_ModStart> dst . y_stride <S2SV_ModEnd> ) ; } <S2SV_ModStart> dst . y_stride <S2SV_ModEnd> ) ; near_sad <S2SV_ModStart> dst . y_stride <S2SV_ModEnd> ) ; near_sad <S2SV_ModStart> dst . y_stride <S2SV_ModEnd> ) ; } <S2SV_ModStart> 16 , pre_y_stride <S2SV_ModEnd> ) ; if <S2SV_ModStart> 16 , pre_y_stride <S2SV_ModEnd> ) ; near_sad <S2SV_ModStart> pre_y_buffer , pre_y_stride <S2SV_ModEnd> ) ; if <S2SV_ModStart> 16 , pre_y_stride <S2SV_ModEnd> ) ; if <S2SV_ModStart> 16 , pre_y_stride <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15538\n\n```\nCWE-399 int xfs_setattr_nonsize ( struct xfs_inode * ip , struct iattr * iattr , int flags ) { xfs_mount_t * mp = ip -> i_mount ; struct inode * inode = VFS_I ( ip ) ; int mask = iattr -> ia_valid ; xfs_trans_t * tp ; int error ; kuid_t uid = GLOBAL_ROOT_UID , iuid = GLOBAL_ROOT_UID ; kgid_t gid = GLOBAL_ROOT_GID , igid = GLOBAL_ROOT_GID ; struct xfs_dquot * udqp = NULL , * gdqp = NULL ; struct xfs_dquot * olddquot1 = NULL , * olddquot2 = NULL ; ASSERT ( ( mask & ATTR_SIZE ) == 0 ) ; if ( XFS_IS_QUOTA_ON ( mp ) && ( mask & ( ATTR_UID | ATTR_GID ) ) ) { uint qflags = 0 ; if ( ( mask & ATTR_UID ) && XFS_IS_UQUOTA_ON ( mp ) ) { uid = iattr -> ia_uid ; qflags |= XFS_QMOPT_UQUOTA ; } else { uid = inode -> i_uid ; } if ( ( mask & ATTR_GID ) && XFS_IS_GQUOTA_ON ( mp ) ) { gid = iattr -> ia_gid ; qflags |= XFS_QMOPT_GQUOTA ; } else { gid = inode -> i_gid ; } ASSERT ( udqp == NULL ) ; ASSERT ( gdqp == NULL ) ; error = xfs_qm_vop_dqalloc ( ip , xfs_kuid_to_uid ( uid ) , xfs_kgid_to_gid ( gid ) , xfs_get_projid ( ip ) , qflags , & udqp , & gdqp , NULL ) ; if ( error ) return error ; } error = xfs_trans_alloc ( mp , & M_RES ( mp ) -> tr_ichange , 0 , 0 , 0 , & tp ) ; if ( error ) goto out_dqrele ; xfs_ilock ( ip , XFS_ILOCK_EXCL ) ; xfs_trans_ijoin ( tp , ip , 0 ) ; if ( mask & ( ATTR_UID | ATTR_GID ) ) { iuid = inode -> i_uid ; igid = inode -> i_gid ; gid = ( mask & ATTR_GID ) ? iattr -> ia_gid : igid ; uid = ( mask & ATTR_UID ) ? iattr -> ia_uid : iuid ; if ( XFS_IS_QUOTA_RUNNING ( mp ) && ( ( XFS_IS_UQUOTA_ON ( mp ) && ! uid_eq ( iuid , uid ) ) || ( XFS_IS_GQUOTA_ON ( mp ) && ! gid_eq ( igid , gid ) ) ) ) { ASSERT ( tp ) ; error = xfs_qm_vop_chown_reserve ( tp , ip , udqp , gdqp , NULL , capable ( CAP_FOWNER ) ? XFS_QMOPT_FORCE_RES : 0 ) ; if ( error ) goto out_cancel ; } } if ( mask & ( ATTR_UID | ATTR_GID ) ) { if ( ( inode -> i_mode & ( S_ISUID | S_ISGID ) ) && ! capable ( CAP_FSETID ) ) inode -> i_mode &= ~ ( S_ISUID | S_ISGID ) ; if ( ! uid_eq ( iuid , uid ) ) { if ( XFS_IS_QUOTA_RUNNING ( mp ) && XFS_IS_UQUOTA_ON ( mp ) ) { ASSERT ( mask & ATTR_UID ) ; ASSERT ( udqp ) ; olddquot1 = xfs_qm_vop_chown ( tp , ip , & ip -> i_udquot , udqp ) ; } ip -> i_d . di_uid = xfs_kuid_to_uid ( uid ) ; inode -> i_uid = uid ; } if ( ! gid_eq ( igid , gid ) ) { if ( XFS_IS_QUOTA_RUNNING ( mp ) && XFS_IS_GQUOTA_ON ( mp ) ) { ASSERT ( xfs_sb_version_has_pquotino ( & mp -> m_sb ) || ! XFS_IS_PQUOTA_ON ( mp ) ) ; ASSERT ( mask & ATTR_GID ) ; ASSERT ( gdqp ) ; olddquot2 = xfs_qm_vop_chown ( tp , ip , & ip -> i_gdquot , gdqp ) ; } ip -> i_d . di_gid = xfs_kgid_to_gid ( gid ) ; inode -> i_gid = gid ; } } if ( mask & ATTR_MODE ) xfs_setattr_mode ( ip , iattr ) ; if ( mask & ( ATTR_ATIME | ATTR_CTIME | ATTR_MTIME ) ) xfs_setattr_time ( ip , iattr ) ; xfs_trans_log_inode ( tp , ip , XFS_ILOG_CORE ) ; XFS_STATS_INC ( mp , xs_ig_attrchg ) ; if ( mp -> m_flags & XFS_MOUNT_WSYNC ) xfs_trans_set_sync ( tp ) ; error = xfs_trans_commit ( tp ) ; xfs_iunlock ( ip , XFS_ILOCK_EXCL ) ; xfs_qm_dqrele ( olddquot1 ) ; xfs_qm_dqrele ( olddquot2 ) ; xfs_qm_dqrele ( udqp ) ; xfs_qm_dqrele ( gdqp ) ; if ( error ) return error ; if ( ( mask & ATTR_MODE ) && ! ( flags & XFS_ATTR_NOACL ) ) { error = posix_acl_chmod ( inode , inode -> i_mode ) ; if ( error ) return error ; } return 0 ; out_cancel : xfs_trans_cancel ( tp ) ; <S2SV_StartBug> out_dqrele : <S2SV_EndBug> xfs_qm_dqrele ( udqp ) ; xfs_qm_dqrele ( gdqp ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tp ) ; xfs_iunlock ( ip , XFS_ILOCK_EXCL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4817\n\n```\nCWE-000 <S2SV_StartBug> static void parse_input ( h2o_http2_conn_t * conn ) <S2SV_EndBug> { size_t http2_max_concurrent_requests_per_connection = conn -> super . ctx -> globalconf -> http2 . max_concurrent_requests_per_connection ; int perform_early_exit = 0 ; if ( conn -> num_streams . pull . half_closed + conn -> num_streams . push . half_closed != http2_max_concurrent_requests_per_connection ) perform_early_exit = 1 ; while ( conn -> state < H2O_HTTP2_CONN_STATE_IS_CLOSING && conn -> sock -> input -> size != 0 ) { if ( perform_early_exit == 1 && conn -> num_streams . pull . half_closed + conn -> num_streams . push . half_closed == http2_max_concurrent_requests_per_connection ) goto EarlyExit ; const char * err_desc = NULL ; ssize_t ret = conn -> _read_expect ( conn , ( uint8_t * ) conn -> sock -> input -> bytes , conn -> sock -> input -> size , & err_desc ) ; if ( ret == H2O_HTTP2_ERROR_INCOMPLETE ) { break ; } else if ( ret < 0 ) { if ( ret != H2O_HTTP2_ERROR_PROTOCOL_CLOSE_IMMEDIATELY ) { enqueue_goaway ( conn , ( int ) ret , err_desc != NULL ? ( h2o_iovec_t ) { ( char * ) err_desc , strlen ( err_desc ) } : ( h2o_iovec_t ) { } ) ; } <S2SV_StartBug> close_connection ( conn ) ; <S2SV_EndBug> return ; } h2o_buffer_consume ( & conn -> sock -> input , ret ) ; } if ( ! h2o_socket_is_reading ( conn -> sock ) ) h2o_socket_read_start ( conn -> sock , on_read ) ; <S2SV_StartBug> return ; <S2SV_EndBug> EarlyExit : if ( h2o_socket_is_reading ( conn -> sock ) ) h2o_socket_read_stop ( conn -> sock ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> parse_input ( h2o_http2_conn_t <S2SV_ModStart> ) ; } return <S2SV_ModStart> ( conn ) <S2SV_ModEnd> ; } h2o_buffer_consume <S2SV_ModStart> ) ; return 0 <S2SV_ModStart> sock ) ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 int _yr_scan_verify_re_match ( YR_SCAN_CONTEXT * context , YR_AC_MATCH * ac_match , uint8_t * data , size_t data_size , size_t data_base , size_t offset ) { CALLBACK_ARGS callback_args ; RE_EXEC_FUNC exec ; int forward_matches = - 1 ; int backward_matches = - 1 ; int flags = 0 ; if ( STRING_IS_GREEDY_REGEXP ( ac_match -> string ) ) flags |= RE_FLAGS_GREEDY ; if ( STRING_IS_NO_CASE ( ac_match -> string ) ) flags |= RE_FLAGS_NO_CASE ; if ( STRING_IS_DOT_ALL ( ac_match -> string ) ) flags |= RE_FLAGS_DOT_ALL ; if ( STRING_IS_FAST_REGEXP ( ac_match -> string ) ) exec = yr_re_fast_exec ; else exec = yr_re_exec ; if ( STRING_IS_ASCII ( ac_match -> string ) ) { forward_matches = exec ( ac_match -> forward_code , data + offset , data_size - offset , <S2SV_StartBug> offset > 0 ? flags | RE_FLAGS_NOT_AT_START : flags , <S2SV_EndBug> NULL , NULL ) ; } if ( STRING_IS_WIDE ( ac_match -> string ) && forward_matches == - 1 ) { flags |= RE_FLAGS_WIDE ; forward_matches = exec ( ac_match -> forward_code , data + offset , data_size - offset , <S2SV_StartBug> offset > 0 ? flags | RE_FLAGS_NOT_AT_START : flags , <S2SV_EndBug> NULL , NULL ) ; } switch ( forward_matches ) { case - 1 : return ERROR_SUCCESS ; case - 2 : return ERROR_INSUFFICIENT_MEMORY ; case - 3 : return ERROR_TOO_MANY_MATCHES ; case - 4 : return ERROR_TOO_MANY_RE_FIBERS ; case - 5 : return ERROR_INTERNAL_FATAL_ERROR ; } if ( forward_matches == 0 && ac_match -> backward_code == NULL ) return ERROR_SUCCESS ; callback_args . string = ac_match -> string ; callback_args . context = context ; callback_args . data = data ; callback_args . data_size = data_size ; callback_args . data_base = data_base ; callback_args . forward_matches = forward_matches ; callback_args . full_word = STRING_IS_FULL_WORD ( ac_match -> string ) ; if ( ac_match -> backward_code != NULL ) { backward_matches = exec ( ac_match -> backward_code , <S2SV_StartBug> data + offset , <S2SV_EndBug> offset , flags | RE_FLAGS_BACKWARDS | RE_FLAGS_EXHAUSTIVE , _yr_scan_match_callback , ( void * ) & callback_args ) ; switch ( backward_matches ) { case - 2 : return ERROR_INSUFFICIENT_MEMORY ; case - 3 : return ERROR_TOO_MANY_MATCHES ; case - 4 : return ERROR_TOO_MANY_RE_FIBERS ; case - 5 : return ERROR_INTERNAL_FATAL_ERROR ; } } else { FAIL_ON_ERROR ( _yr_scan_match_callback ( data + offset , 0 , flags , & callback_args ) ) ; } return ERROR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> offset , offset , <S2SV_ModEnd> flags , NULL <S2SV_ModStart> offset , offset , <S2SV_ModEnd> flags , NULL <S2SV_ModStart> , data + offset , data_size -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9993\n\n```\nCWE-200 static int open_url ( AVFormatContext * s , AVIOContext * * pb , const char * url , AVDictionary * opts , AVDictionary * opts2 , int * is_http ) { HLSContext * c = s -> priv_data ; AVDictionary * tmp = NULL ; const char * proto_name = NULL ; int ret ; av_dict_copy ( & tmp , opts , 0 ) ; av_dict_copy ( & tmp , opts2 , 0 ) ; if ( av_strstart ( url , \"crypto\" , NULL ) ) { if ( url [ 6 ] == '+' || url [ 6 ] == ':' ) proto_name = avio_find_protocol_name ( url + 7 ) ; } if ( ! proto_name ) proto_name = avio_find_protocol_name ( url ) ; if ( ! proto_name ) return AVERROR_INVALIDDATA ; <S2SV_StartBug> if ( ! av_strstart ( proto_name , \"http\" , NULL ) && ! av_strstart ( proto_name , \"file\" , NULL ) ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; if ( ! strncmp ( proto_name , url , strlen ( proto_name ) ) && url [ strlen ( proto_name ) ] == ':' ) ; else if ( av_strstart ( url , \"crypto\" , NULL ) && ! strncmp ( proto_name , url + 7 , strlen ( proto_name ) ) && url [ 7 + strlen ( proto_name ) ] == ':' ) ; else if ( strcmp ( proto_name , \"file\" ) || ! strncmp ( url , \"file,\" , 5 ) ) return AVERROR_INVALIDDATA ; ret = s -> io_open ( s , pb , url , AVIO_FLAG_READ , & tmp ) ; if ( ret >= 0 ) { char * new_cookies = NULL ; if ( ! ( s -> flags & AVFMT_FLAG_CUSTOM_IO ) ) av_opt_get ( * pb , \"cookies\" , AV_OPT_SEARCH_CHILDREN , ( uint8_t * * ) & new_cookies ) ; if ( new_cookies ) { av_free ( c -> cookies ) ; c -> cookies = new_cookies ; } av_dict_set ( & opts , \"cookies\" , c -> cookies , 0 ) ; } av_dict_free ( & tmp ) ; if ( is_http ) * is_http = av_strstart ( proto_name , \"http\" , NULL ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> av_strstart ( proto_name <S2SV_ModStart> ( proto_name , \"file\" , NULL ) ) { if ( strcmp ( c -> allowed_extensions , \"ALL\" ) && ! av_match_ext ( url , c -> allowed_extensions ) ) { av_log ( s , AV_LOG_ERROR , \"Filename<S2SV_blank>extension<S2SV_blank>of<S2SV_blank>\\\\\\'%s\\\\\\'<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>common<S2SV_blank>multimedia<S2SV_blank>extension,<S2SV_blank>blocked<S2SV_blank>for<S2SV_blank>security<S2SV_blank>reasons.\\\\n\" \"If<S2SV_blank>you<S2SV_blank>wish<S2SV_blank>to<S2SV_blank>override<S2SV_blank>this<S2SV_blank>adjust<S2SV_blank>allowed_extensions,<S2SV_blank>you<S2SV_blank>can<S2SV_blank>set<S2SV_blank>it<S2SV_blank>to<S2SV_blank>\\\\\\'ALL\\\\\\'<S2SV_blank>to<S2SV_blank>allow<S2SV_blank>all\\\\n\" , url ) ; return AVERROR_INVALIDDATA ; } } else if ( av_strstart ( proto_name , <S2SV_ModStart> , NULL ) ) { ; } else <S2SV_ModEnd> return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16645\n\n```\nCWE-125 static const struct usb_cdc_union_desc * ims_pcu_get_cdc_union_desc ( struct usb_interface * intf ) { const void * buf = intf -> altsetting -> extra ; size_t buflen = intf -> altsetting -> extralen ; struct usb_cdc_union_desc * union_desc ; if ( ! buf ) { dev_err ( & intf -> dev , \"Missing<S2SV_blank>descriptor<S2SV_blank>data\\\\n\" ) ; return NULL ; } if ( ! buflen ) { dev_err ( & intf -> dev , \"Zero<S2SV_blank>length<S2SV_blank>descriptor\\\\n\" ) ; return NULL ; } <S2SV_StartBug> while ( buflen > 0 ) { <S2SV_EndBug> union_desc = ( struct usb_cdc_union_desc * ) buf ; if ( union_desc -> bDescriptorType == USB_DT_CS_INTERFACE && union_desc -> bDescriptorSubType == USB_CDC_UNION_TYPE ) { dev_dbg ( & intf -> dev , \"Found<S2SV_blank>union<S2SV_blank>header\\\\n\" ) ; <S2SV_StartBug> return union_desc ; <S2SV_EndBug> } buflen -= union_desc -> bLength ; buf += union_desc -> bLength ; } dev_err ( & intf -> dev , \"Missing<S2SV_blank>CDC<S2SV_blank>union<S2SV_blank>descriptor\\\\n\" ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( buflen >= sizeof ( * union_desc ) ) { union_desc = ( struct usb_cdc_union_desc * ) buf ; if ( union_desc -> bLength > buflen ) { dev_err ( & intf -> dev , \"Too<S2SV_blank>large<S2SV_blank>descriptor\\\\n\" ) ; return NULL ; } <S2SV_ModEnd> if ( union_desc <S2SV_ModStart> \"Found<S2SV_blank>union<S2SV_blank>header\\\\n\" ) ; if ( union_desc -> bLength >= sizeof ( * union_desc ) ) return union_desc ; dev_err ( & intf -> dev , \"Union<S2SV_blank>descriptor<S2SV_blank>to<S2SV_blank>short<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%zd\\\\n)\" , union_desc -> bLength , sizeof ( * union_desc ) ) ; return NULL <S2SV_ModEnd> ; } buflen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static arguments_ty ast_for_arguments ( struct compiling * c , const node * n ) { int i , j , k , nposargs = 0 , nkwonlyargs = 0 ; int nposdefaults = 0 , found_default = 0 ; asdl_seq * posargs , * posdefaults , * kwonlyargs , * kwdefaults ; arg_ty vararg = NULL , kwarg = NULL ; arg_ty arg ; node * ch ; if ( TYPE ( n ) == parameters ) { if ( NCH ( n ) == 2 ) return arguments ( NULL , NULL , NULL , NULL , NULL , NULL , c -> c_arena ) ; n = CHILD ( n , 1 ) ; } assert ( TYPE ( n ) == typedargslist || TYPE ( n ) == varargslist ) ; for ( i = 0 ; i < NCH ( n ) ; i ++ ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == STAR ) { i ++ ; if ( i < NCH ( n ) && ( TYPE ( CHILD ( n , i ) ) == tfpdef || TYPE ( CHILD ( n , i ) ) == vfpdef ) ) { i ++ ; } break ; } if ( TYPE ( ch ) == DOUBLESTAR ) break ; if ( TYPE ( ch ) == vfpdef || TYPE ( ch ) == tfpdef ) nposargs ++ ; if ( TYPE ( ch ) == EQUAL ) nposdefaults ++ ; } for ( ; i < NCH ( n ) ; ++ i ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == DOUBLESTAR ) break ; if ( TYPE ( ch ) == tfpdef || TYPE ( ch ) == vfpdef ) nkwonlyargs ++ ; } posargs = ( nposargs ? _Py_asdl_seq_new ( nposargs , c -> c_arena ) : NULL ) ; if ( ! posargs && nposargs ) return NULL ; kwonlyargs = ( nkwonlyargs ? _Py_asdl_seq_new ( nkwonlyargs , c -> c_arena ) : NULL ) ; if ( ! kwonlyargs && nkwonlyargs ) return NULL ; posdefaults = ( nposdefaults ? _Py_asdl_seq_new ( nposdefaults , c -> c_arena ) : NULL ) ; if ( ! posdefaults && nposdefaults ) return NULL ; kwdefaults = ( nkwonlyargs ? _Py_asdl_seq_new ( nkwonlyargs , c -> c_arena ) : NULL ) ; if ( ! kwdefaults && nkwonlyargs ) return NULL ; i = 0 ; j = 0 ; k = 0 ; while ( i < NCH ( n ) ) { ch = CHILD ( n , i ) ; switch ( TYPE ( ch ) ) { case tfpdef : case vfpdef : if ( i + 1 < NCH ( n ) && TYPE ( CHILD ( n , i + 1 ) ) == EQUAL ) { expr_ty expression = ast_for_expr ( c , CHILD ( n , i + 2 ) ) ; if ( ! expression ) return NULL ; assert ( posdefaults != NULL ) ; asdl_seq_SET ( posdefaults , j ++ , expression ) ; i += 2 ; found_default = 1 ; } else if ( found_default ) { ast_error ( c , n , \"non-default<S2SV_blank>argument<S2SV_blank>follows<S2SV_blank>default<S2SV_blank>argument\" ) ; return NULL ; } arg = ast_for_arg ( c , ch ) ; if ( ! arg ) return NULL ; asdl_seq_SET ( posargs , k ++ , arg ) ; <S2SV_StartBug> i += 2 ; <S2SV_EndBug> break ; case STAR : if ( i + 1 >= NCH ( n ) || <S2SV_StartBug> ( i + 2 == NCH ( n ) && TYPE ( CHILD ( n , i + 1 ) ) == COMMA ) ) { <S2SV_EndBug> ast_error ( c , CHILD ( n , i ) , \"named<S2SV_blank>arguments<S2SV_blank>must<S2SV_blank>follow<S2SV_blank>bare<S2SV_blank>*\" ) ; return NULL ; } ch = CHILD ( n , i + 1 ) ; if ( TYPE ( ch ) == COMMA ) { int res = 0 ; i += 2 ; <S2SV_StartBug> res = handle_keywordonly_args ( c , n , i , <S2SV_EndBug> kwonlyargs , kwdefaults ) ; if ( res == - 1 ) return NULL ; i = res ; } else { vararg = ast_for_arg ( c , ch ) ; if ( ! vararg ) return NULL ; <S2SV_StartBug> i += 3 ; <S2SV_EndBug> if ( i < NCH ( n ) && ( TYPE ( CHILD ( n , i ) ) == tfpdef || TYPE ( CHILD ( n , i ) ) == vfpdef ) ) { int res = 0 ; res = handle_keywordonly_args ( c , n , i , kwonlyargs , kwdefaults ) ; if ( res == - 1 ) return NULL ; i = res ; } } break ; case DOUBLESTAR : ch = CHILD ( n , i + 1 ) ; assert ( TYPE ( ch ) == tfpdef || TYPE ( ch ) == vfpdef ) ; kwarg = ast_for_arg ( c , ch ) ; if ( ! kwarg ) return NULL ; <S2SV_StartBug> i += 3 ; <S2SV_EndBug> break ; default : PyErr_Format ( PyExc_SystemError , \"unexpected<S2SV_blank>node<S2SV_blank>in<S2SV_blank>varargslist:<S2SV_blank>%d<S2SV_blank>@<S2SV_blank>%d\" , TYPE ( ch ) , i ) ; return NULL ; } } return arguments ( posargs , vararg , kwonlyargs , kwdefaults , kwarg , posdefaults , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; i += 1 ; if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == COMMA ) i += 1 <S2SV_ModEnd> ; break ; <S2SV_ModStart> n ) && ( <S2SV_ModStart> ) == COMMA || TYPE ( CHILD ( n , i + 1 ) ) == TYPE_COMMENT ) <S2SV_ModStart> += 2 ; if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == TYPE_COMMENT ) { ast_error ( c , CHILD ( n , i ) , \"bare<S2SV_blank>*<S2SV_blank>has<S2SV_blank>associated<S2SV_blank>type<S2SV_blank>comment\" ) ; return NULL ; } <S2SV_ModStart> ; i += 2 ; if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == COMMA ) i += 1 ; if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == TYPE_COMMENT ) { vararg -> type_comment = NEW_TYPE_COMMENT ( CHILD ( n , i ) ) ; if ( ! vararg -> type_comment ) return NULL ; i += 1 ; } <S2SV_ModEnd> if ( i <S2SV_ModStart> ; i += 2 ; if ( TYPE ( CHILD ( n , i ) ) == COMMA ) i += 1 ; break ; case TYPE_COMMENT : assert ( i ) ; if ( kwarg ) arg = kwarg ; arg -> type_comment = NEW_TYPE_COMMENT ( ch ) ; if ( ! arg -> type_comment ) return NULL ; i += 1 <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-358(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10229\n\n```\nCWE-358 int udpv6_recvmsg ( struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; <S2SV_StartBug> int is_udplite = IS_UDPLITE ( sk ) ; <S2SV_EndBug> int is_udp4 ; bool slow ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len , addr_len ) ; if ( np -> rxpmtu && np -> rxopt . bits . rxpmtu ) return ipv6_recv_rxpmtu ( sk , msg , len , addr_len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; is_udp4 = ( skb -> protocol == htons ( ETH_P_IP ) ) ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { <S2SV_StartBug> if ( udp_lib_checksum_complete ( skb ) ) <S2SV_EndBug> goto csum_copy_err ; } <S2SV_StartBug> if ( skb_csum_unnecessary ( skb ) ) <S2SV_EndBug> err = skb_copy_datagram_msg ( skb , sizeof ( struct udphdr ) , msg , copied ) ; else { err = skb_copy_and_csum_datagram_msg ( skb , sizeof ( struct udphdr ) , msg ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udpv6_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) { if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; } sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( msg -> msg_name ) { DECLARE_SOCKADDR ( struct sockaddr_in6 * , sin6 , msg -> msg_name ) ; sin6 -> sin6_family = AF_INET6 ; sin6 -> sin6_port = udp_hdr ( skb ) -> source ; sin6 -> sin6_flowinfo = 0 ; if ( is_udp4 ) { ipv6_addr_set_v4mapped ( ip_hdr ( skb ) -> saddr , & sin6 -> sin6_addr ) ; sin6 -> sin6_scope_id = 0 ; } else { sin6 -> sin6_addr = ipv6_hdr ( skb ) -> saddr ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , inet6_iif ( skb ) ) ; } * addr_len = sizeof ( * sin6 ) ; } if ( np -> rxopt . all ) ip6_datagram_recv_common_ctl ( sk , msg , skb ) ; if ( is_udp4 ) { if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; } else { if ( np -> rxopt . all ) ip6_datagram_recv_specific_ctl ( sk , msg , skb ) ; } err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { if ( is_udp4 ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } else { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } } unlock_sock_fast ( sk , slow ) ; cond_resched ( ) ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; bool checksum_valid = false <S2SV_ModStart> partial_cov ) { checksum_valid = ! <S2SV_ModEnd> udp_lib_checksum_complete ( skb <S2SV_ModStart> ( skb ) ; if ( ! checksum_valid <S2SV_ModStart> } if ( checksum_valid ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9533\n\n```\nCWE-787 int TIFFFlushData1 ( TIFF * tif ) { if ( tif -> tif_rawcc > 0 && tif -> tif_flags & TIFF_BUF4WRITE ) { if ( ! isFillOrder ( tif , tif -> tif_dir . td_fillorder ) && ( tif -> tif_flags & TIFF_NOBITREV ) == 0 ) TIFFReverseBits ( ( uint8 * ) tif -> tif_rawdata , tif -> tif_rawcc ) ; if ( ! TIFFAppendToStrip ( tif , isTiled ( tif ) ? tif -> tif_curtile : tif -> tif_curstrip , tif -> tif_rawdata , tif -> tif_rawcc ) ) <S2SV_StartBug> return ( 0 ) ; <S2SV_EndBug> tif -> tif_rawcc = 0 ; tif -> tif_rawcp = tif -> tif_rawdata ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tif_rawcc ) ) { tif -> tif_rawcc = 0 ; tif -> tif_rawcp = tif -> tif_rawdata ; <S2SV_ModStart> 0 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1798\n\n```\nCWE-20 static unsigned long ioapic_read_indirect ( struct kvm_ioapic * ioapic , unsigned long addr , unsigned long length ) { unsigned long result = 0 ; switch ( ioapic -> ioregsel ) { case IOAPIC_REG_VERSION : result = ( ( ( ( IOAPIC_NUM_PINS - 1 ) & 0xff ) << 16 ) | ( IOAPIC_VERSION_ID & 0xff ) ) ; break ; case IOAPIC_REG_APIC_ID : case IOAPIC_REG_ARB_ID : result = ( ( ioapic -> id & 0xf ) << 24 ) ; break ; default : { u32 redir_index = ( ioapic -> ioregsel - 0x10 ) >> 1 ; u64 redir_content ; <S2SV_StartBug> ASSERT ( redir_index < IOAPIC_NUM_PINS ) ; <S2SV_EndBug> <S2SV_StartBug> redir_content = ioapic -> redirtbl [ redir_index ] . bits ; <S2SV_EndBug> result = ( ioapic -> ioregsel & 0x1 ) ? ( redir_content >> 32 ) & 0xffffffff : redir_content & 0xffffffff ; break ; } } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u64 redir_content ; if <S2SV_ModEnd> ( redir_index < <S2SV_ModStart> < IOAPIC_NUM_PINS ) <S2SV_ModEnd> redir_content = ioapic <S2SV_ModStart> ] . bits ; else redir_content = ~ 0ULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_golden_frame_stats ( VP8_COMP * cpi ) { VP8_COMMON * cm = & cpi -> common ; if ( cm -> refresh_golden_frame ) { if ( ! cpi -> auto_gold ) cpi -> frames_till_gf_update_due = DEFAULT_GF_INTERVAL ; if ( ( cpi -> pass != 2 ) && ( cpi -> frames_till_gf_update_due > 0 ) ) { cpi -> current_gf_interval = cpi -> frames_till_gf_update_due ; if ( ( cm -> frame_type != KEY_FRAME ) && ! cpi -> source_alt_ref_active ) { cpi -> gf_overspend_bits += ( cpi -> projected_frame_size - cpi -> inter_frame_target ) ; } cpi -> non_gf_bitrate_adjustment = cpi -> gf_overspend_bits / cpi -> frames_till_gf_update_due ; } <S2SV_StartBug> vpx_memset ( cpi -> gf_active_flags , 1 , ( cm -> mb_rows * cm -> mb_cols ) ) ; <S2SV_EndBug> cpi -> gf_active_count = cm -> mb_rows * cm -> mb_cols ; cm -> refresh_golden_frame = 0 ; cpi -> frames_since_golden = 0 ; cpi -> recent_ref_frame_usage [ INTRA_FRAME ] = 1 ; cpi -> recent_ref_frame_usage [ LAST_FRAME ] = 1 ; cpi -> recent_ref_frame_usage [ GOLDEN_FRAME ] = 1 ; cpi -> recent_ref_frame_usage [ ALTREF_FRAME ] = 1 ; if ( cpi -> oxcf . fixed_q >= 0 && cpi -> oxcf . play_alternate && ! cpi -> common . refresh_alt_ref_frame ) { cpi -> source_alt_ref_pending = 1 ; cpi -> frames_till_gf_update_due = cpi -> baseline_gf_interval ; } if ( ! cpi -> source_alt_ref_pending ) cpi -> source_alt_ref_active = 0 ; if ( cpi -> frames_till_gf_update_due > 0 ) cpi -> frames_till_gf_update_due -- ; } else if ( ! cpi -> common . refresh_alt_ref_frame ) { if ( cpi -> frames_till_gf_update_due > 0 ) cpi -> frames_till_gf_update_due -- ; if ( cpi -> frames_till_alt_ref_frame ) cpi -> frames_till_alt_ref_frame -- ; cpi -> frames_since_golden ++ ; if ( cpi -> frames_since_golden > 1 ) { cpi -> recent_ref_frame_usage [ INTRA_FRAME ] += cpi -> mb . count_mb_ref_frame_usage [ INTRA_FRAME ] ; cpi -> recent_ref_frame_usage [ LAST_FRAME ] += cpi -> mb . count_mb_ref_frame_usage [ LAST_FRAME ] ; cpi -> recent_ref_frame_usage [ GOLDEN_FRAME ] += cpi -> mb . count_mb_ref_frame_usage [ GOLDEN_FRAME ] ; cpi -> recent_ref_frame_usage [ ALTREF_FRAME ] += cpi -> mb . count_mb_ref_frame_usage [ ALTREF_FRAME ] ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> frames_till_gf_update_due ; } memset <S2SV_ModEnd> ( cpi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5770\n\n```\nCWE-190 SPL_METHOD ( SplFileObject , fread ) { spl_filesystem_object * intern = ( spl_filesystem_object * ) zend_object_store_get_object ( getThis ( ) TSRMLS_CC ) ; long length = 0 ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"l\" , & length ) == FAILURE ) { return ; } if ( length <= 0 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Length<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\" ) ; RETURN_FALSE ; } <S2SV_StartBug> Z_STRVAL_P ( return_value ) = emalloc ( length + 1 ) ; <S2SV_EndBug> Z_STRLEN_P ( return_value ) = php_stream_read ( intern -> u . file . stream , Z_STRVAL_P ( return_value ) , length ) ; Z_STRVAL_P ( return_value ) [ Z_STRLEN_P ( return_value ) ] = 0 ; Z_TYPE_P ( return_value ) = IS_STRING ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RETURN_FALSE ; } if ( length > INT_MAX ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Length<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>no<S2SV_blank>more<S2SV_blank>than<S2SV_blank>%d\" , INT_MAX ) ; RETURN_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1237\n\n```\nCWE-284 static __be32 nfsd3_proc_setacl ( struct svc_rqst * rqstp , struct nfsd3_setaclargs * argp , struct nfsd3_attrstat * resp ) { struct inode * inode ; svc_fh * fh ; __be32 nfserr = 0 ; int error ; fh = fh_copy ( & resp -> fh , & argp -> fh ) ; nfserr = fh_verify ( rqstp , & resp -> fh , 0 , NFSD_MAY_SATTR ) ; if ( nfserr ) goto out ; inode = d_inode ( fh -> fh_dentry ) ; <S2SV_StartBug> if ( ! IS_POSIXACL ( inode ) || ! inode -> i_op -> set_acl ) { <S2SV_EndBug> error = - EOPNOTSUPP ; goto out_errno ; <S2SV_StartBug> } <S2SV_EndBug> error = fh_want_write ( fh ) ; if ( error ) <S2SV_StartBug> goto out_errno ; <S2SV_EndBug> error = inode -> i_op -> set_acl ( inode , argp -> acl_access , ACL_TYPE_ACCESS ) ; if ( error ) goto out_drop_write ; <S2SV_StartBug> error = inode -> i_op -> set_acl ( inode , argp -> acl_default , <S2SV_EndBug> ACL_TYPE_DEFAULT ) ; out_drop_write : fh_drop_write ( fh ) ; out_errno : nfserr = nfserrno ( error ) ; out : posix_acl_release ( argp -> acl_access ) ; posix_acl_release ( argp -> acl_default ) ; RETURN_STATUS ( nfserr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fh_dentry ) ; error = fh_want_write ( fh ) ; if ( error ) <S2SV_ModEnd> goto out_errno ; <S2SV_ModStart> goto out_errno ; fh_lock ( fh ) ; error = set_posix_acl ( inode , ACL_TYPE_ACCESS , argp -> acl_access <S2SV_ModEnd> ) ; if <S2SV_ModStart> error ) goto out_drop_lock ; error = set_posix_acl ( inode , ACL_TYPE_DEFAULT <S2SV_ModEnd> , argp -> <S2SV_ModStart> argp -> acl_default ) ; out_drop_lock : fh_unlock ( fh ) ; <S2SV_ModEnd> fh_drop_write ( fh\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> jas_iccprof_t * jas_iccprof_createfrombuf ( uchar * buf , int len ) <S2SV_EndBug> { jas_stream_t * in ; jas_iccprof_t * prof ; if ( ! ( in = jas_stream_memopen ( JAS_CAST ( char * , buf ) , len ) ) ) goto error ; if ( ! ( prof = jas_iccprof_load ( in ) ) ) goto error ; jas_stream_close ( in ) ; return prof ; error : if ( in ) jas_stream_close ( in ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * jas_iccprof_createfrombuf ( jas_uchar <S2SV_ModEnd> * buf ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6546\n\n```\nCWE-200 int vcc_getsockopt ( struct socket * sock , int level , int optname , char __user * optval , int __user * optlen ) { struct atm_vcc * vcc ; int len ; if ( get_user ( len , optlen ) ) return - EFAULT ; if ( __SO_LEVEL_MATCH ( optname , level ) && len != __SO_SIZE ( optname ) ) return - EINVAL ; vcc = ATM_SD ( sock ) ; switch ( optname ) { case SO_ATMQOS : if ( ! test_bit ( ATM_VF_HASQOS , & vcc -> flags ) ) return - EINVAL ; return copy_to_user ( optval , & vcc -> qos , sizeof ( vcc -> qos ) ) ? - EFAULT : 0 ; case SO_SETCLP : return put_user ( vcc -> atm_options & ATM_ATMOPT_CLP ? 1 : 0 , ( unsigned long __user * ) optval ) ? - EFAULT : 0 ; case SO_ATMPVC : { struct sockaddr_atmpvc pvc ; if ( ! vcc -> dev || ! test_bit ( ATM_VF_ADDR , & vcc -> flags ) ) return - ENOTCONN ; <S2SV_StartBug> pvc . sap_family = AF_ATMPVC ; <S2SV_EndBug> pvc . sap_addr . itf = vcc -> dev -> number ; pvc . sap_addr . vpi = vcc -> vpi ; pvc . sap_addr . vci = vcc -> vci ; return copy_to_user ( optval , & pvc , sizeof ( pvc ) ) ? - EFAULT : 0 ; } default : if ( level == SOL_SOCKET ) return - EINVAL ; break ; } if ( ! vcc -> dev || ! vcc -> dev -> ops -> getsockopt ) return - EINVAL ; return vcc -> dev -> ops -> getsockopt ( vcc , level , optname , optval , len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOTCONN ; memset ( & pvc , 0 , sizeof ( pvc ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 static void lockd_down_net ( struct svc_serv * serv , struct net * net ) { struct lockd_net * ln = net_generic ( net , lockd_net_id ) ; if ( ln -> nlmsvc_users ) { if ( -- ln -> nlmsvc_users == 0 ) { nlm_shutdown_hosts_net ( net ) ; <S2SV_StartBug> cancel_delayed_work_sync ( & ln -> grace_period_end ) ; <S2SV_EndBug> locks_end_grace ( & ln -> lockd_manager ) ; svc_shutdown_net ( serv , net ) ; dprintk ( \"lockd_down_net:<S2SV_blank>per-net<S2SV_blank>data<S2SV_blank>destroyed;<S2SV_blank>net=%p\\\\n\" , net ) ; } } else { printk ( KERN_ERR \"lockd_down_net:<S2SV_blank>no<S2SV_blank>users!<S2SV_blank>task=%p,<S2SV_blank>net=%p\\\\n\" , nlmsvc_task , net ) ; BUG ( ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> net ) ; <S2SV_ModEnd> svc_shutdown_net ( serv\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8071\n\n```\nCWE-404 static int cp2112_gpio_get_all ( struct gpio_chip * chip ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> int ret ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> ret = hid_hw_raw_request ( hdev , CP2112_GPIO_GET , buf , CP2112_GPIO_GET_LENGTH , HID_FEATURE_REPORT , HID_REQ_GET_REPORT ) ; if ( ret != CP2112_GPIO_GET_LENGTH ) { hid_err ( hdev , \"error<S2SV_blank>requesting<S2SV_blank>GPIO<S2SV_blank>values:<S2SV_blank>%d\\\\n\" , ret ) ; ret = ret < 0 ? ret : - EIO ; goto exit ; } ret = buf [ 1 ] ; exit : <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> in_out_buffer ; <S2SV_ModEnd> int ret ; <S2SV_ModStart> int ret ; mutex_lock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; ret <S2SV_ModStart> ; exit : mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7757\n\n```\nCWE-772 int sas_smp_get_phy_events ( struct sas_phy * phy ) { int res ; u8 * req ; u8 * resp ; struct sas_rphy * rphy = dev_to_rphy ( phy -> dev . parent ) ; struct domain_device * dev = sas_find_dev_by_rphy ( rphy ) ; req = alloc_smp_req ( RPEL_REQ_SIZE ) ; if ( ! req ) return - ENOMEM ; resp = alloc_smp_resp ( RPEL_RESP_SIZE ) ; if ( ! resp ) { kfree ( req ) ; return - ENOMEM ; } req [ 1 ] = SMP_REPORT_PHY_ERR_LOG ; req [ 9 ] = phy -> number ; res = smp_execute_task ( dev , req , RPEL_REQ_SIZE , resp , RPEL_RESP_SIZE ) ; if ( ! res ) goto out ; phy -> invalid_dword_count = scsi_to_u32 ( & resp [ 12 ] ) ; phy -> running_disparity_error_count = scsi_to_u32 ( & resp [ 16 ] ) ; phy -> loss_of_dword_sync_count = scsi_to_u32 ( & resp [ 20 ] ) ; phy -> phy_reset_problem_count = scsi_to_u32 ( & resp [ 24 ] ) ; out : <S2SV_StartBug> kfree ( resp ) ; <S2SV_EndBug> return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : kfree ( req ) ; kfree (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int xfs_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int error = 0 ; if ( ! acl ) goto set_acl ; error = - E2BIG ; if ( acl -> a_count > XFS_ACL_MAX_ENTRIES ( XFS_M ( inode -> i_sb ) ) ) return error ; if ( type == ACL_TYPE_ACCESS ) { <S2SV_StartBug> umode_t mode = inode -> i_mode ; <S2SV_EndBug> <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & mode ) ; <S2SV_EndBug> <S2SV_StartBug> if ( error <= 0 ) { <S2SV_EndBug> acl = NULL ; if ( error < 0 ) return error ; <S2SV_StartBug> } <S2SV_EndBug> error = xfs_set_mode ( inode , mode ) ; if ( error ) return error ; } set_acl : return __xfs_set_acl ( inode , type , acl ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { umode_t mode <S2SV_ModEnd> ; error = <S2SV_ModStart> ; error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & mode <S2SV_ModStart> , & mode , & acl <S2SV_ModStart> if ( error <S2SV_ModEnd> ) return error <S2SV_ModStart> return error ; <S2SV_ModEnd> error = xfs_set_mode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0216\n\n```\nCWE-20 static int netbk_count_requests ( struct xenvif * vif , struct xen_netif_tx_request * first , struct xen_netif_tx_request * txp , int work_to_do ) { RING_IDX cons = vif -> tx . req_cons ; int frags = 0 ; if ( ! ( first -> flags & XEN_NETTXF_more_data ) ) return 0 ; do { if ( frags >= work_to_do ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"Need<S2SV_blank>more<S2SV_blank>frags\\\\n\" ) ; <S2SV_EndBug> return - frags ; } if ( unlikely ( frags >= MAX_SKB_FRAGS ) ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"Too<S2SV_blank>many<S2SV_blank>frags\\\\n\" ) ; <S2SV_EndBug> return - frags ; } memcpy ( txp , RING_GET_REQUEST ( & vif -> tx , cons + frags ) , sizeof ( * txp ) ) ; if ( txp -> size > first -> size ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"Frags<S2SV_blank>galore\\\\n\" ) ; <S2SV_EndBug> return - frags ; } first -> size -= txp -> size ; frags ++ ; if ( unlikely ( ( txp -> offset + txp -> size ) > PAGE_SIZE ) ) { <S2SV_StartBug> netdev_dbg ( vif -> dev , \"txp->offset:<S2SV_blank>%x,<S2SV_blank>size:<S2SV_blank>%u\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> txp -> offset , txp -> size ) ; <S2SV_EndBug> return - frags ; } } while ( ( txp ++ ) -> flags & XEN_NETTXF_more_data ) ; return frags ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> work_to_do ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> dev , \"Need<S2SV_blank>more<S2SV_blank>frags\\\\n\" ) ; netbk_fatal_tx_err ( vif <S2SV_ModStart> ) ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> dev , \"Too<S2SV_blank>many<S2SV_blank>frags\\\\n\" ) ; netbk_fatal_tx_err ( vif <S2SV_ModStart> size ) { netdev_err ( vif -> dev , \"Frag<S2SV_blank>is<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>frame.\\\\n\" ) ; netbk_fatal_tx_err ( vif <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ) { netdev_err <S2SV_ModEnd> ( vif -> <S2SV_ModStart> txp -> size ) ; netbk_fatal_tx_err ( vif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13002\n\n```\nCWE-125 static void aodv_extension ( netdissect_options * ndo , const struct aodv_ext * ep , u_int length ) { <S2SV_StartBug> const struct aodv_hello * ah ; <S2SV_EndBug> switch ( ep -> type ) { case AODV_EXT_HELLO : ah = ( const struct aodv_hello * ) ( const void * ) ep ; ND_TCHECK ( * ah ) ; if ( length < sizeof ( struct aodv_hello ) ) <S2SV_StartBug> goto trunc ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\text<S2SV_blank>HELLO<S2SV_blank>%ld<S2SV_blank>ms\" , ( unsigned long ) EXTRACT_32BITS ( & ah -> interval ) ) ) ; break ; default : ND_PRINT ( ( ndo , \"\\\\n\\\\text<S2SV_blank>%u<S2SV_blank>%u\" , ep -> type , ep -> length ) ) ; break ; } return ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|hello]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> aodv_hello * ah ; ND_TCHECK ( * ep ) <S2SV_ModStart> goto trunc ; if ( ep -> length < 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\text<S2SV_blank>HELLO<S2SV_blank>-<S2SV_blank>bad<S2SV_blank>length<S2SV_blank>%u\" , ep -> length ) ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-667(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-667 static int userfaultfd_register ( struct userfaultfd_ctx * ctx , unsigned long arg ) { struct mm_struct * mm = ctx -> mm ; struct vm_area_struct * vma , * prev , * cur ; int ret ; struct uffdio_register uffdio_register ; struct uffdio_register __user * user_uffdio_register ; unsigned long vm_flags , new_flags ; bool found ; bool basic_ioctls ; unsigned long start , end , vma_end ; user_uffdio_register = ( struct uffdio_register __user * ) arg ; ret = - EFAULT ; if ( copy_from_user ( & uffdio_register , user_uffdio_register , sizeof ( uffdio_register ) - sizeof ( __u64 ) ) ) goto out ; ret = - EINVAL ; if ( ! uffdio_register . mode ) goto out ; if ( uffdio_register . mode & ~ ( UFFDIO_REGISTER_MODE_MISSING | UFFDIO_REGISTER_MODE_WP ) ) goto out ; vm_flags = 0 ; if ( uffdio_register . mode & UFFDIO_REGISTER_MODE_MISSING ) vm_flags |= VM_UFFD_MISSING ; if ( uffdio_register . mode & UFFDIO_REGISTER_MODE_WP ) { vm_flags |= VM_UFFD_WP ; ret = - EINVAL ; goto out ; } ret = validate_range ( mm , uffdio_register . range . start , uffdio_register . range . len ) ; if ( ret ) goto out ; start = uffdio_register . range . start ; end = start + uffdio_register . range . len ; ret = - ENOMEM ; if ( ! mmget_not_zero ( mm ) ) goto out ; <S2SV_StartBug> down_write ( & mm -> mmap_sem ) ; <S2SV_EndBug> vma = find_vma_prev ( mm , start , & prev ) ; if ( ! vma ) goto out_unlock ; ret = - EINVAL ; if ( vma -> vm_start >= end ) goto out_unlock ; if ( is_vm_hugetlb_page ( vma ) ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( vma ) ; if ( start & ( vma_hpagesize - 1 ) ) goto out_unlock ; } found = false ; basic_ioctls = false ; for ( cur = vma ; cur && cur -> vm_start < end ; cur = cur -> vm_next ) { cond_resched ( ) ; BUG_ON ( ! ! cur -> vm_userfaultfd_ctx . ctx ^ ! ! ( cur -> vm_flags & ( VM_UFFD_MISSING | VM_UFFD_WP ) ) ) ; ret = - EINVAL ; if ( ! vma_can_userfault ( cur ) ) goto out_unlock ; ret = - EPERM ; if ( unlikely ( ! ( cur -> vm_flags & VM_MAYWRITE ) ) ) goto out_unlock ; if ( is_vm_hugetlb_page ( cur ) && end <= cur -> vm_end && end > cur -> vm_start ) { unsigned long vma_hpagesize = vma_kernel_pagesize ( cur ) ; ret = - EINVAL ; if ( end & ( vma_hpagesize - 1 ) ) goto out_unlock ; } ret = - EBUSY ; if ( cur -> vm_userfaultfd_ctx . ctx && cur -> vm_userfaultfd_ctx . ctx != ctx ) goto out_unlock ; if ( is_vm_hugetlb_page ( cur ) ) basic_ioctls = true ; found = true ; } BUG_ON ( ! found ) ; if ( vma -> vm_start < start ) prev = vma ; ret = 0 ; do { cond_resched ( ) ; BUG_ON ( ! vma_can_userfault ( vma ) ) ; BUG_ON ( vma -> vm_userfaultfd_ctx . ctx && vma -> vm_userfaultfd_ctx . ctx != ctx ) ; WARN_ON ( ! ( vma -> vm_flags & VM_MAYWRITE ) ) ; if ( vma -> vm_userfaultfd_ctx . ctx == ctx && ( vma -> vm_flags & vm_flags ) == vm_flags ) goto skip ; if ( vma -> vm_start > start ) start = vma -> vm_start ; vma_end = min ( end , vma -> vm_end ) ; new_flags = ( vma -> vm_flags & ~ vm_flags ) | vm_flags ; prev = vma_merge ( mm , prev , start , vma_end , new_flags , vma -> anon_vma , vma -> vm_file , vma -> vm_pgoff , vma_policy ( vma ) , ( ( struct vm_userfaultfd_ctx ) { ctx } ) ) ; if ( prev ) { vma = prev ; goto next ; } if ( vma -> vm_start < start ) { ret = split_vma ( mm , vma , start , 1 ) ; if ( ret ) break ; } if ( vma -> vm_end > end ) { ret = split_vma ( mm , vma , end , 0 ) ; if ( ret ) break ; } next : vma -> vm_flags = new_flags ; vma -> vm_userfaultfd_ctx . ctx = ctx ; skip : prev = vma ; start = vma -> vm_end ; vma = vma -> vm_next ; } while ( vma && vma -> vm_start < end ) ; out_unlock : up_write ( & mm -> mmap_sem ) ; mmput ( mm ) ; if ( ! ret ) { if ( put_user ( basic_ioctls ? UFFD_API_RANGE_IOCTLS_BASIC : UFFD_API_RANGE_IOCTLS , & user_uffdio_register -> ioctls ) ) ret = - EFAULT ; } out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mmap_sem ) ; if ( ! mmget_still_valid ( mm ) ) goto out_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0991\n\n```\nCWE-399 void mono_gc_cleanup ( void ) { # ifdef DEBUG g_message ( \"%s:<S2SV_blank>cleaning<S2SV_blank>up<S2SV_blank>finalizer\" , __func__ ) ; # endif if ( ! gc_disabled ) { ResetEvent ( shutdown_event ) ; finished = TRUE ; if ( mono_thread_internal_current ( ) != gc_thread ) { mono_gc_finalize_notify ( ) ; if ( WaitForSingleObjectEx ( shutdown_event , 2000 , FALSE ) == WAIT_TIMEOUT ) { int ret ; suspend_finalizers = TRUE ; mono_thread_internal_stop ( gc_thread ) ; ret = WaitForSingleObjectEx ( gc_thread -> handle , 100 , TRUE ) ; if ( ret == WAIT_TIMEOUT ) { g_warning ( \"Shutting<S2SV_blank>down<S2SV_blank>finalizer<S2SV_blank>thread<S2SV_blank>timed<S2SV_blank>out.\" ) ; } else { Sleep ( 100 ) ; } } } gc_thread = NULL ; # ifdef HAVE_BOEHM_GC GC_finalizer_notifier = NULL ; # endif } DeleteCriticalSection ( & handle_section ) ; DeleteCriticalSection ( & allocator_section ) ; DeleteCriticalSection ( & finalizer_mutex ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> finalizer_mutex ) ; DeleteCriticalSection ( & reference_queue_mutex ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7472\n\n```\nCWE-404 static int install_process_keyring ( void ) { struct cred * new ; int ret ; new = prepare_creds ( ) ; if ( ! new ) return - ENOMEM ; ret = install_process_keyring_to_cred ( new ) ; if ( ret < 0 ) { abort_creds ( new ) ; <S2SV_StartBug> return ret != - EEXIST ? ret : 0 ; <S2SV_EndBug> } return commit_creds ( new ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; return ret <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11142\n\n```\nCWE-400 static zend_bool add_post_var ( zval * arr , post_var_data_t * var , zend_bool eof ) { <S2SV_StartBug> char * ksep , * vsep , * val ; <S2SV_EndBug> size_t klen , vlen ; size_t new_vlen ; if ( var -> ptr >= var -> end ) { return 0 ; } <S2SV_StartBug> vsep = memchr ( var -> ptr , '&' , var -> end - var -> ptr ) ; <S2SV_EndBug> if ( ! vsep ) { <S2SV_StartBug> if ( ! eof ) { <S2SV_EndBug> return 0 ; } else { vsep = var -> end ; } } ksep = memchr ( var -> ptr , '=' , vsep - var -> ptr ) ; if ( ksep ) { * ksep = '\\\\0' ; klen = ksep - var -> ptr ; vlen = vsep - ++ ksep ; } else { ksep = \"\" ; klen = vsep - var -> ptr ; vlen = 0 ; } php_url_decode ( var -> ptr , klen ) ; val = estrndup ( ksep , vlen ) ; if ( vlen ) { vlen = php_url_decode ( val , vlen ) ; } if ( sapi_module . input_filter ( PARSE_POST , var -> ptr , & val , vlen , & new_vlen ) ) { php_register_variable_safe ( var -> ptr , val , new_vlen , arr ) ; } efree ( val ) ; var -> ptr = vsep + ( vsep != var -> end ) ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { char * start , * <S2SV_ModStart> 0 ; } start = var -> ptr + var -> already_scanned ; <S2SV_ModStart> = memchr ( start <S2SV_ModEnd> , '&' , <S2SV_ModStart> -> end - start <S2SV_ModEnd> ) ; if <S2SV_ModStart> eof ) { var -> already_scanned = var -> end - var -> ptr ; <S2SV_ModStart> end ) ; var -> already_scanned = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 void set_cfg_option ( char * opt_string ) { char * sep , * sep2 , szSec [ 1024 ] , szKey [ 1024 ] , szVal [ 1024 ] ; sep = strchr ( opt_string , ':' ) ; if ( ! sep ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>expected<S2SV_blank>Section:Name=Value\\\\n\" , opt_string ) ; return ; } { const size_t sepIdx = sep - opt_string ; <S2SV_StartBug> strncpy ( szSec , opt_string , sepIdx ) ; <S2SV_EndBug> szSec [ sepIdx ] = 0 ; } sep ++ ; sep2 = strchr ( sep , '=' ) ; if ( ! sep2 ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>expected<S2SV_blank>Section:Name=Value\\\\n\" , opt_string ) ; return ; } { const size_t sepIdx = sep2 - sep ; <S2SV_StartBug> strncpy ( szKey , sep , sepIdx ) ; <S2SV_EndBug> szKey [ sepIdx ] = 0 ; <S2SV_StartBug> strcpy ( szVal , sep2 + 1 ) ; <S2SV_EndBug> } if ( ! stricmp ( szKey , \"*\" ) ) { if ( stricmp ( szVal , \"null\" ) ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>expected<S2SV_blank>Section:*=null\\\\n\" , opt_string ) ; return ; } gf_cfg_del_section ( cfg_file , szSec ) ; return ; } if ( ! stricmp ( szVal , \"null\" ) ) { szVal [ 0 ] = 0 ; } gf_cfg_set_key ( cfg_file , szSec , szKey , szVal [ 0 ] ? szVal : NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - opt_string ; if ( sepIdx >= sizeof ( szSec ) ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>Section<S2SV_blank>name<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\\\\n\" , opt_string ) ; return ; } <S2SV_ModStart> - sep ; if ( sepIdx >= sizeof ( szKey ) ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>key<S2SV_blank>name<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\\\\n\" , opt_string ) ; return ; } <S2SV_ModStart> = 0 ; if ( strlen ( <S2SV_ModEnd> sep2 + 1 <S2SV_ModStart> + 1 ) >= sizeof ( szVal ) ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>value<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\\\\n\" , opt_string ) ; return ; } strcpy ( szVal , sep2 + 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7117\n\n```\nCWE-19 int __sys_recvmmsg ( int fd , struct mmsghdr __user * mmsg , unsigned int vlen , unsigned int flags , struct timespec * timeout ) { int fput_needed , err , datagrams ; struct socket * sock ; struct mmsghdr __user * entry ; struct compat_mmsghdr __user * compat_entry ; struct msghdr msg_sys ; struct timespec end_time ; if ( timeout && poll_select_set_timeout ( & end_time , timeout -> tv_sec , timeout -> tv_nsec ) ) return - EINVAL ; datagrams = 0 ; sock = sockfd_lookup_light ( fd , & err , & fput_needed ) ; if ( ! sock ) return err ; err = sock_error ( sock -> sk ) ; if ( err ) goto out_put ; entry = mmsg ; compat_entry = ( struct compat_mmsghdr __user * ) mmsg ; while ( datagrams < vlen ) { if ( MSG_CMSG_COMPAT & flags ) { err = ___sys_recvmsg ( sock , ( struct user_msghdr __user * ) compat_entry , & msg_sys , flags & ~ MSG_WAITFORONE , datagrams ) ; if ( err < 0 ) break ; err = __put_user ( err , & compat_entry -> msg_len ) ; ++ compat_entry ; } else { err = ___sys_recvmsg ( sock , ( struct user_msghdr __user * ) entry , & msg_sys , flags & ~ MSG_WAITFORONE , datagrams ) ; if ( err < 0 ) break ; err = put_user ( err , & entry -> msg_len ) ; ++ entry ; } if ( err ) break ; ++ datagrams ; if ( flags & MSG_WAITFORONE ) flags |= MSG_DONTWAIT ; if ( timeout ) { ktime_get_ts ( timeout ) ; * timeout = timespec_sub ( end_time , * timeout ) ; if ( timeout -> tv_sec < 0 ) { timeout -> tv_sec = timeout -> tv_nsec = 0 ; break ; } if ( timeout -> tv_nsec == 0 && timeout -> tv_sec == 0 ) break ; } if ( msg_sys . msg_flags & MSG_OOB ) break ; cond_resched ( ) ; } <S2SV_StartBug> out_put : <S2SV_EndBug> fput_light ( sock -> file , fput_needed ) ; if ( err == 0 ) <S2SV_StartBug> return datagrams ; <S2SV_EndBug> if ( datagrams != 0 ) { if ( err != - EAGAIN ) { sock -> sk -> sk_err = - err ; } <S2SV_StartBug> return datagrams ; <S2SV_EndBug> } <S2SV_StartBug> return err ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( err == 0 ) goto out_put ; if ( datagrams <S2SV_ModEnd> == 0 ) <S2SV_ModStart> == 0 ) { datagrams = err ; goto out_put ; } <S2SV_ModEnd> if ( err <S2SV_ModStart> err ; } out_put : fput_light ( sock -> file , fput_needed ) ; <S2SV_ModStart> datagrams ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t udpReceiveDatagram ( Socket * socket , SocketMsg * message , uint_t flags ) { error_t error ; SocketQueueItem * queueItem ; if ( ( flags & SOCKET_FLAG_DONT_WAIT ) == 0 ) { if ( socket -> receiveQueue == NULL ) { socket -> eventMask = SOCKET_EVENT_RX_READY ; osResetEvent ( & socket -> event ) ; osReleaseMutex ( & netMutex ) ; osWaitForEvent ( & socket -> event , socket -> timeout ) ; osAcquireMutex ( & netMutex ) ; } } if ( socket -> receiveQueue != NULL ) { queueItem = socket -> receiveQueue ; message -> length = netBufferRead ( message -> data , queueItem -> buffer , queueItem -> offset , message -> size ) ; <S2SV_StartBug> message -> srcIpAddr = queueItem -> srcIpAddr ; <S2SV_EndBug> message -> srcPort = queueItem -> srcPort ; message -> destIpAddr = queueItem -> destIpAddr ; message -> ttl = queueItem -> ancillary . ttl ; # if ( ETH_SUPPORT == ENABLED ) message -> srcMacAddr = queueItem -> ancillary . srcMacAddr ; message -> destMacAddr = queueItem -> ancillary . destMacAddr ; # endif # if ( ETH_PORT_TAGGING_SUPPORT == ENABLED ) message -> switchPort = queueItem -> ancillary . port ; # endif # if ( ETH_TIMESTAMP_SUPPORT == ENABLED ) message -> timestamp = queueItem -> ancillary . timestamp ; # endif if ( ( flags & SOCKET_FLAG_PEEK ) == 0 ) { socket -> receiveQueue = queueItem -> next ; netBufferFree ( queueItem -> buffer ) ; } udpUpdateEvents ( socket ) ; error = NO_ERROR ; } else { message -> length = 0 ; error = ERROR_TIMEOUT ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; message -> interface = queueItem -> interface ; message ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18218\n\n```\nCWE-416 <S2SV_StartBug> int hns_nic_net_xmit_hw ( struct net_device * ndev , <S2SV_EndBug> struct sk_buff * skb , struct hns_nic_ring_data * ring_data ) { struct hns_nic_priv * priv = netdev_priv ( ndev ) ; struct hnae_ring * ring = ring_data -> ring ; struct device * dev = ring_to_dev ( ring ) ; struct netdev_queue * dev_queue ; struct skb_frag_struct * frag ; int buf_num ; int seg_num ; dma_addr_t dma ; int size , next_to_use ; int i ; switch ( priv -> ops . maybe_stop_tx ( & skb , & buf_num , ring ) ) { case - EBUSY : ring -> stats . tx_busy ++ ; goto out_net_tx_busy ; case - ENOMEM : ring -> stats . sw_err_cnt ++ ; netdev_err ( ndev , \"no<S2SV_blank>memory<S2SV_blank>to<S2SV_blank>xmit!\\\\n\" ) ; goto out_err_tx_ok ; default : break ; } seg_num = skb_shinfo ( skb ) -> nr_frags + 1 ; next_to_use = ring -> next_to_use ; size = skb_headlen ( skb ) ; dma = dma_map_single ( dev , skb -> data , size , DMA_TO_DEVICE ) ; if ( dma_mapping_error ( dev , dma ) ) { netdev_err ( ndev , \"TX<S2SV_blank>head<S2SV_blank>DMA<S2SV_blank>map<S2SV_blank>failed\\\\n\" ) ; ring -> stats . sw_err_cnt ++ ; goto out_err_tx_ok ; } priv -> ops . fill_desc ( ring , skb , size , dma , seg_num == 1 ? 1 : 0 , buf_num , DESC_TYPE_SKB , ndev -> mtu ) ; for ( i = 1 ; i < seg_num ; i ++ ) { frag = & skb_shinfo ( skb ) -> frags [ i - 1 ] ; size = skb_frag_size ( frag ) ; dma = skb_frag_dma_map ( dev , frag , 0 , size , DMA_TO_DEVICE ) ; if ( dma_mapping_error ( dev , dma ) ) { netdev_err ( ndev , \"TX<S2SV_blank>frag(%d)<S2SV_blank>DMA<S2SV_blank>map<S2SV_blank>failed\\\\n\" , i ) ; ring -> stats . sw_err_cnt ++ ; goto out_map_frag_fail ; } priv -> ops . fill_desc ( ring , skb_frag_page ( frag ) , size , dma , seg_num - 1 == i ? 1 : 0 , buf_num , DESC_TYPE_PAGE , ndev -> mtu ) ; } dev_queue = netdev_get_tx_queue ( ndev , skb -> queue_mapping ) ; netdev_tx_sent_queue ( dev_queue , skb -> len ) ; <S2SV_StartBug> wmb ( ) ; <S2SV_EndBug> assert ( skb -> queue_mapping < priv -> ae_handle -> q_num ) ; hnae_queue_xmit ( priv -> ae_handle -> qs [ skb -> queue_mapping ] , buf_num ) ; ring -> stats . tx_pkts ++ ; ring -> stats . tx_bytes += skb -> len ; return NETDEV_TX_OK ; out_map_frag_fail : while ( ring -> next_to_use != next_to_use ) { unfill_desc ( ring ) ; if ( ring -> next_to_use != next_to_use ) dma_unmap_page ( dev , ring -> desc_cb [ ring -> next_to_use ] . dma , ring -> desc_cb [ ring -> next_to_use ] . length , DMA_TO_DEVICE ) ; else dma_unmap_single ( dev , ring -> desc_cb [ next_to_use ] . dma , ring -> desc_cb [ next_to_use ] . length , DMA_TO_DEVICE ) ; } out_err_tx_ok : dev_kfree_skb_any ( skb ) ; return NETDEV_TX_OK ; out_net_tx_busy : netif_stop_subqueue ( ndev , skb -> queue_mapping ) ; smp_mb ( ) ; return NETDEV_TX_BUSY ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> netdev_tx_t <S2SV_ModEnd> hns_nic_net_xmit_hw ( struct <S2SV_ModStart> len ) ; netif_trans_update ( ndev ) ; ndev -> stats . tx_bytes += skb -> len ; ndev -> stats . tx_packets ++ ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horDiff8 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { TIFFPredictorState * sp = PredictorState ( tif ) ; tmsize_t stride = sp -> stride ; unsigned char * cp = ( unsigned char * ) cp0 ; <S2SV_StartBug> assert ( ( cc % stride ) == 0 ) ; <S2SV_EndBug> if ( cc > stride ) { cc -= stride ; if ( stride == 3 ) { unsigned int r1 , g1 , b1 ; unsigned int r2 = cp [ 0 ] ; unsigned int g2 = cp [ 1 ] ; unsigned int b2 = cp [ 2 ] ; do { r1 = cp [ 3 ] ; cp [ 3 ] = ( unsigned char ) ( ( r1 - r2 ) & 0xff ) ; r2 = r1 ; g1 = cp [ 4 ] ; cp [ 4 ] = ( unsigned char ) ( ( g1 - g2 ) & 0xff ) ; g2 = g1 ; b1 = cp [ 5 ] ; cp [ 5 ] = ( unsigned char ) ( ( b1 - b2 ) & 0xff ) ; b2 = b1 ; cp += 3 ; } while ( ( cc -= 3 ) > 0 ) ; } else if ( stride == 4 ) { unsigned int r1 , g1 , b1 , a1 ; unsigned int r2 = cp [ 0 ] ; unsigned int g2 = cp [ 1 ] ; unsigned int b2 = cp [ 2 ] ; unsigned int a2 = cp [ 3 ] ; do { r1 = cp [ 4 ] ; cp [ 4 ] = ( unsigned char ) ( ( r1 - r2 ) & 0xff ) ; r2 = r1 ; g1 = cp [ 5 ] ; cp [ 5 ] = ( unsigned char ) ( ( g1 - g2 ) & 0xff ) ; g2 = g1 ; b1 = cp [ 6 ] ; cp [ 6 ] = ( unsigned char ) ( ( b1 - b2 ) & 0xff ) ; b2 = b1 ; a1 = cp [ 7 ] ; cp [ 7 ] = ( unsigned char ) ( ( a1 - a2 ) & 0xff ) ; a2 = a1 ; cp += 4 ; } while ( ( cc -= 4 ) > 0 ) ; } else { cp += cc - 1 ; do { REPEAT4 ( stride , cp [ stride ] = ( unsigned char ) ( ( cp [ stride ] - cp [ 0 ] ) & 0xff ) ; cp -- ) } while ( ( cc -= stride ) > 0 ) ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horDiff8 ( TIFF <S2SV_ModStart> ) cp0 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> % stride ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horDiff8\" , \"%s\" , \"(cc%stride)!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( cc <S2SV_ModStart> ; } } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3637\n\n```\nCWE-20 static void m_stop ( struct seq_file * m , void * v ) { struct proc_maps_private * priv = m -> private ; struct vm_area_struct * vma = v ; <S2SV_StartBug> vma_stop ( priv , vma ) ; <S2SV_EndBug> if ( priv -> task ) put_task_struct ( priv -> task ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = v ; if ( ! IS_ERR ( vma ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _hostsock_readv ( oe_fd_t * desc , const struct oe_iovec * iov , int iovcnt ) { ssize_t ret = - 1 ; sock_t * sock = _cast_sock ( desc ) ; void * buf = NULL ; size_t buf_size = 0 ; <S2SV_StartBug> if ( ! sock || ( ! iov && iovcnt ) || iovcnt < 0 || iovcnt > OE_IOV_MAX ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> if ( oe_iov_pack ( iov , iovcnt , & buf , & buf_size ) != 0 ) <S2SV_EndBug> <S2SV_StartBug> OE_RAISE_ERRNO ( OE_ENOMEM ) ; <S2SV_EndBug> if ( oe_syscall_recvv_ocall ( & ret , sock -> host_fd , buf , iovcnt , buf_size ) != OE_OK ) { OE_RAISE_ERRNO ( OE_EINVAL ) ; } <S2SV_StartBug> if ( ret > 0 ) <S2SV_EndBug> { if ( oe_iov_sync ( iov , iovcnt , buf , buf_size ) != 0 ) OE_RAISE_ERRNO ( OE_EINVAL ) ; } done : if ( buf ) oe_free ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; size_t data_size = 0 ; <S2SV_ModStart> , & buf_size , & data_size <S2SV_ModStart> OE_RAISE_ERRNO ( OE_ENOMEM ) ; if ( data_size > OE_SSIZE_MAX ) OE_RAISE_ERRNO ( OE_EINVAL <S2SV_ModStart> ( ret > ( ssize_t ) ( data_size ) ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; } if ( ret >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35518\n\n```\nCWE-200 void send_ldap_result_ext ( Slapi_PBlock * pb , int err , char * matched , char * text , int nentries , struct berval * * urls , BerElement * ber ) { Slapi_Operation * operation ; passwdPolicy * pwpolicy = NULL ; Connection * conn = NULL ; Slapi_DN * sdn = NULL ; const char * dn = NULL ; ber_tag_t tag ; int flush_ber_element = 1 ; ber_tag_t bind_method = 0 ; int internal_op ; int i , rc , logit = 0 ; char * pbtext ; slapi_pblock_get ( pb , SLAPI_BIND_METHOD , & bind_method ) ; slapi_pblock_get ( pb , SLAPI_OPERATION , & operation ) ; slapi_pblock_get ( pb , SLAPI_CONNECTION , & conn ) ; if ( text ) { pbtext = text ; } else { <S2SV_StartBug> slapi_pblock_get ( pb , SLAPI_PB_RESULT_TEXT , & pbtext ) ; <S2SV_EndBug> } if ( operation == NULL ) { slapi_log_err ( SLAPI_LOG_ERR , \"send_ldap_result_ext\" , \"No<S2SV_blank>operation<S2SV_blank>found:<S2SV_blank>slapi_search_internal_set_pb<S2SV_blank>was<S2SV_blank>incomplete<S2SV_blank>(invalid<S2SV_blank>\\'base\\'<S2SV_blank>?)\\\\n\" ) ; return ; } if ( operation -> o_status == SLAPI_OP_STATUS_RESULT_SENT ) { return ; } if ( ber != NULL ) { flush_ber_element = 0 ; } if ( err != LDAP_SUCCESS ) { if ( err == LDAP_INVALID_CREDENTIALS || err == LDAP_INAPPROPRIATE_AUTH || err == LDAP_AUTH_METHOD_NOT_SUPPORTED || err == LDAP_STRONG_AUTH_NOT_SUPPORTED || err == LDAP_STRONG_AUTH_REQUIRED || err == LDAP_CONFIDENTIALITY_REQUIRED || err == LDAP_INSUFFICIENT_ACCESS || err == LDAP_AUTH_UNKNOWN ) { slapi_counter_increment ( g_get_global_snmp_vars ( ) -> ops_tbl . dsSecurityErrors ) ; } else if ( err != LDAP_REFERRAL && err != LDAP_OPT_REFERRALS && err != LDAP_PARTIAL_RESULTS ) { slapi_counter_increment ( g_get_global_snmp_vars ( ) -> ops_tbl . dsErrors ) ; } } slapi_log_err ( SLAPI_LOG_TRACE , \"send_ldap_result_ext\" , \"=><S2SV_blank>%d:%s:%s\\\\n\" , err , matched ? matched : \"\" , text ? text : \"\" ) ; switch ( operation -> o_tag ) { case LBER_DEFAULT : tag = LBER_SEQUENCE ; break ; case LDAP_REQ_SEARCH : tag = LDAP_RES_SEARCH_RESULT ; break ; case LDAP_REQ_DELETE : tag = LDAP_RES_DELETE ; break ; case LDAP_REFERRAL : if ( conn && conn -> c_ldapversion > LDAP_VERSION2 ) { tag = LDAP_TAG_REFERRAL ; break ; } default : tag = operation -> o_tag + 1 ; break ; } internal_op = operation_is_flag_set ( operation , OP_FLAG_INTERNAL ) ; if ( ( conn == NULL ) || ( internal_op ) ) { if ( operation -> o_result_handler != NULL ) { operation -> o_result_handler ( conn , operation , err , matched , text , nentries , urls ) ; logit = 1 ; } goto log_and_return ; } if ( ( err == LDAP_INVALID_CREDENTIALS ) && ( bind_method != LDAP_AUTH_SASL ) ) { slapi_pblock_get ( pb , SLAPI_TARGET_SDN , & sdn ) ; dn = slapi_sdn_get_dn ( sdn ) ; pwpolicy = new_passwdPolicy ( pb , dn ) ; if ( pwpolicy && ( pwpolicy -> pw_lockout == 1 ) ) { if ( update_pw_retry ( pb ) == LDAP_CONSTRAINT_VIOLATION && ! pwpolicy -> pw_is_legacy ) { err = LDAP_CONSTRAINT_VIOLATION ; text = \"Invalid<S2SV_blank>credentials,<S2SV_blank>you<S2SV_blank>now<S2SV_blank>have<S2SV_blank>exceeded<S2SV_blank>the<S2SV_blank>password<S2SV_blank>retry<S2SV_blank>limit.\" ; } } } if ( ber == NULL ) { if ( ( ber = der_alloc ( ) ) == NULL ) { slapi_log_err ( SLAPI_LOG_ERR , \"send_ldap_result_ext\" , \"ber_alloc<S2SV_blank>failed\\\\n\" ) ; goto log_and_return ; } } if ( err == LDAP_ADMINLIMIT_EXCEEDED && conn -> c_ldapversion < LDAP_VERSION3 ) { err = LDAP_SIZELIMIT_EXCEEDED ; } if ( conn -> c_ldapversion < LDAP_VERSION3 || urls == NULL ) { char * save , * buf = NULL ; if ( urls != NULL ) { int len ; slapi_counter_increment ( g_get_global_snmp_vars ( ) -> ops_tbl . dsReferrals ) ; len = 10 ; for ( i = 0 ; urls [ i ] != NULL ; i ++ ) { len += urls [ i ] -> bv_len + 1 ; } if ( text != NULL ) { len += strlen ( text ) + 1 ; } buf = slapi_ch_malloc ( len ) ; * buf = '\\\\0' ; if ( text != NULL ) { strcpy ( buf , text ) ; strcat ( buf , \"\\\\n\" ) ; } strcat ( buf , \"Referral:\" ) ; for ( i = 0 ; urls [ i ] != NULL ; i ++ ) { strcat ( buf , \"\\\\n\" ) ; strcat ( buf , urls [ i ] -> bv_val ) ; } save = text ; text = buf ; } if ( ( conn -> c_ldapversion < LDAP_VERSION3 && err == LDAP_REFERRAL ) || urls != NULL ) { err = LDAP_PARTIAL_RESULTS ; } rc = ber_printf ( ber , \"{it{ess\" , operation -> o_msgid , tag , err , matched ? matched : \"\" , pbtext ? pbtext : \"\" ) ; if ( rc != LBER_ERROR ) { rc = check_and_send_extended_result ( pb , tag , ber ) ; } if ( rc != LBER_ERROR ) { rc = check_and_send_SASL_response ( pb , tag , ber , conn ) ; } if ( rc != LBER_ERROR ) { rc = ber_printf ( ber , \"}\" ) ; } if ( buf != NULL ) { text = save ; slapi_ch_free ( ( void * * ) & buf ) ; } } else { if ( ! config_check_referral_mode ( ) ) slapi_counter_increment ( g_get_global_snmp_vars ( ) -> ops_tbl . dsReferrals ) ; rc = ber_printf ( ber , \"{it{esst{s\" , operation -> o_msgid , tag , err , matched ? matched : \"\" , text ? text : \"\" , LDAP_TAG_REFERRAL , urls [ 0 ] -> bv_val ) ; for ( i = 1 ; urls [ i ] != NULL && rc != LBER_ERROR ; i ++ ) { rc = ber_printf ( ber , \"s\" , urls [ i ] -> bv_val ) ; } if ( rc != LBER_ERROR ) { rc = ber_printf ( ber , \"}\" ) ; } if ( rc != LBER_ERROR ) { rc = check_and_send_extended_result ( pb , tag , ber ) ; } if ( rc != LBER_ERROR ) { rc = check_and_send_SASL_response ( pb , tag , ber , conn ) ; } if ( rc != LBER_ERROR ) { rc = ber_printf ( ber , \"}\" ) ; } } if ( err == LDAP_SUCCESS ) { if ( process_read_entry_controls ( pb , LDAP_CONTROL_PRE_READ_ENTRY ) ) { err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION ; goto log_and_return ; } if ( process_read_entry_controls ( pb , LDAP_CONTROL_POST_READ_ENTRY ) ) { err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION ; goto log_and_return ; } } if ( operation -> o_results . result_controls != NULL && conn -> c_ldapversion >= LDAP_VERSION3 && write_controls ( ber , operation -> o_results . result_controls ) != 0 ) { rc = ( int ) LBER_ERROR ; } if ( rc != LBER_ERROR ) { rc = ber_put_seq ( ber ) ; } if ( rc == LBER_ERROR ) { slapi_log_err ( SLAPI_LOG_ERR , \"send_ldap_result_ext\" , \"ber_printf<S2SV_blank>failed<S2SV_blank>1\\\\n\" ) ; if ( flush_ber_element == 1 ) { ber_free ( ber , 1 ) ; } goto log_and_return ; } if ( flush_ber_element ) { if ( flush_ber ( pb , conn , operation , ber , _LDAP_SEND_RESULT ) == 0 ) { logit = 1 ; } } log_and_return : operation -> o_status = SLAPI_OP_STATUS_RESULT_SENT ; if ( logit && ( operation_is_flag_set ( operation , OP_FLAG_ACTION_LOG_ACCESS ) || ( internal_op && config_get_plugin_logging ( ) ) ) ) { log_result ( pb , operation , err , tag , nentries ) ; } slapi_log_err ( SLAPI_LOG_TRACE , \"send_ldap_result_ext\" , \"<=<S2SV_blank>%d\\\\n\" , err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( pb , SLAPI_RESULT_TEXT <S2SV_ModEnd> , & pbtext\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 int main ( int argc , char * * argv ) { int fmtid ; int id ; char * infile ; jas_stream_t * instream ; jas_image_t * image ; int width ; int height ; int depth ; int numcmpts ; int verbose ; char * fmtname ; int debug ; size_t max_mem ; <S2SV_StartBug> if ( jas_init ( ) ) { <S2SV_EndBug> abort ( ) ; } cmdname = argv [ 0 ] ; <S2SV_StartBug> infile = 0 ; <S2SV_EndBug> verbose = 0 ; debug = 0 ; # if defined ( JAS_DEFAULT_MAX_MEM_USAGE ) max_mem = JAS_DEFAULT_MAX_MEM_USAGE ; # endif while ( ( id = jas_getopt ( argc , argv , opts ) ) >= 0 ) { switch ( id ) { case OPT_VERBOSE : verbose = 1 ; break ; case OPT_VERSION : printf ( \"%s\\\\n\" , JAS_VERSION ) ; exit ( EXIT_SUCCESS ) ; break ; case OPT_DEBUG : debug = atoi ( jas_optarg ) ; break ; case OPT_INFILE : infile = jas_optarg ; break ; <S2SV_StartBug> case OPT_MAXMEM : <S2SV_EndBug> max_mem = strtoull ( jas_optarg , 0 , 10 ) ; break ; case OPT_HELP : default : usage ( ) ; break ; } } jas_setdbglevel ( debug ) ; # if defined ( JAS_DEFAULT_MAX_MEM_USAGE ) jas_set_max_mem_usage ( max_mem ) ; # endif if ( infile ) { if ( ! ( instream = jas_stream_fopen ( infile , \"rb\" ) ) ) { fprintf ( stderr , \"cannot<S2SV_blank>open<S2SV_blank>input<S2SV_blank>image<S2SV_blank>file<S2SV_blank>%s\\\\n\" , infile ) ; exit ( EXIT_FAILURE ) ; } } else { if ( ! ( instream = jas_stream_fdopen ( 0 , \"rb\" ) ) ) { fprintf ( stderr , \"cannot<S2SV_blank>open<S2SV_blank>standard<S2SV_blank>input\\\\n\" ) ; exit ( EXIT_FAILURE ) ; } } if ( ( fmtid = jas_image_getfmt ( instream ) ) < 0 ) { fprintf ( stderr , \"unknown<S2SV_blank>image<S2SV_blank>format\\\\n\" ) ; } <S2SV_StartBug> if ( ! ( image = jas_image_decode ( instream , fmtid , 0 ) ) ) { <S2SV_EndBug> jas_stream_close ( instream ) ; fprintf ( stderr , \"cannot<S2SV_blank>load<S2SV_blank>image\\\\n\" ) ; return EXIT_FAILURE ; } jas_stream_close ( instream ) ; <S2SV_StartBug> if ( ! ( numcmpts = jas_image_numcmpts ( image ) ) ) { <S2SV_EndBug> fprintf ( stderr , \"warning:<S2SV_blank>image<S2SV_blank>has<S2SV_blank>no<S2SV_blank>components\\\\n\" ) ; } if ( numcmpts ) { width = jas_image_cmptwidth ( image , 0 ) ; height = jas_image_cmptheight ( image , 0 ) ; depth = jas_image_cmptprec ( image , 0 ) ; } else { width = 0 ; height = 0 ; depth = 0 ; } <S2SV_StartBug> if ( ! ( fmtname = jas_image_fmttostr ( fmtid ) ) ) { <S2SV_EndBug> abort ( ) ; } <S2SV_StartBug> printf ( \"%s<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%ld\\\\n\" , fmtname , numcmpts , width , height , depth , ( long ) jas_image_rawsize ( image ) ) ; <S2SV_EndBug> jas_image_destroy ( image ) ; jas_image_clearfmts ( ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t max_mem ; size_t max_samples ; char optstr [ 32 ] ; <S2SV_ModStart> 0 ] ; max_samples = 64 * JAS_MEBI ; <S2SV_ModStart> break ; case OPT_MAXSAMPLES : max_samples = strtoull ( jas_optarg , 0 , 10 ) ; break ; case <S2SV_ModStart> ) ; } snprintf ( optstr , sizeof ( optstr ) , \"max_samples=%-zu\" , max_samples ) ; <S2SV_ModStart> , fmtid , optstr <S2SV_ModEnd> ) ) ) <S2SV_ModStart> ( ! ( fmtname = jas_image_fmttostr ( fmtid ) ) ) { jas_eprintf ( \"format<S2SV_blank>name<S2SV_blank>lookup<S2SV_blank>failed\\\\n\" ) ; return EXIT_FAILURE ; } if ( ! ( <S2SV_ModStart> 0 ; } printf ( \"%s<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>%ld\\\\n\" , fmtname <S2SV_ModEnd> , numcmpts , <S2SV_ModStart> , depth , JAS_CAST ( long , <S2SV_ModEnd> jas_image_rawsize ( image <S2SV_ModStart> jas_image_rawsize ( image )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void update_state ( VP9_COMP * cpi , PICK_MODE_CONTEXT * ctx , <S2SV_EndBug> int mi_row , int mi_col , BLOCK_SIZE bsize , int output_enabled ) { int i , x_idx , y ; VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; struct macroblock_plane * const p = x -> plane ; struct macroblockd_plane * const pd = xd -> plane ; MODE_INFO * mi = & ctx -> mic ; MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; MODE_INFO * mi_addr = xd -> mi [ 0 ] ; <S2SV_StartBug> const struct segmentation * const seg = & cm -> seg ; <S2SV_EndBug> const int mis = cm -> mi_stride ; const int mi_width = num_8x8_blocks_wide_lookup [ bsize ] ; const int mi_height = num_8x8_blocks_high_lookup [ bsize ] ; int max_plane ; assert ( mi -> mbmi . sb_type == bsize ) ; * mi_addr = * mi ; <S2SV_StartBug> if ( seg -> enabled && output_enabled ) { <S2SV_EndBug> if ( cpi -> oxcf . aq_mode == COMPLEXITY_AQ ) { const uint8_t * const map = seg -> update_map ? cpi -> segmentation_map : cm -> last_frame_seg_map ; mi_addr -> mbmi . segment_id = <S2SV_StartBug> vp9_get_segment_id ( cm , map , bsize , mi_row , mi_col ) ; <S2SV_EndBug> } <S2SV_StartBug> else if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) { <S2SV_EndBug> vp9_cyclic_refresh_update_segment ( cpi , & xd -> mi [ 0 ] -> mbmi , <S2SV_StartBug> mi_row , mi_col , bsize , 1 ) ; <S2SV_EndBug> vp9_init_plane_quantizers ( cpi , x ) ; } } max_plane = is_inter_block ( mbmi ) ? MAX_MB_PLANE : 1 ; for ( i = 0 ; i < max_plane ; ++ i ) { p [ i ] . coeff = ctx -> coeff_pbuf [ i ] [ 1 ] ; p [ i ] . qcoeff = ctx -> qcoeff_pbuf [ i ] [ 1 ] ; pd [ i ] . dqcoeff = ctx -> dqcoeff_pbuf [ i ] [ 1 ] ; p [ i ] . eobs = ctx -> eobs_pbuf [ i ] [ 1 ] ; } for ( i = max_plane ; i < MAX_MB_PLANE ; ++ i ) { p [ i ] . coeff = ctx -> coeff_pbuf [ i ] [ 2 ] ; p [ i ] . qcoeff = ctx -> qcoeff_pbuf [ i ] [ 2 ] ; pd [ i ] . dqcoeff = ctx -> dqcoeff_pbuf [ i ] [ 2 ] ; p [ i ] . eobs = ctx -> eobs_pbuf [ i ] [ 2 ] ; } for ( y = 0 ; y < mi_height ; y ++ ) for ( x_idx = 0 ; x_idx < mi_width ; x_idx ++ ) if ( ( xd -> mb_to_right_edge >> ( 3 + MI_SIZE_LOG2 ) ) + mi_width > x_idx && ( xd -> mb_to_bottom_edge >> ( 3 + MI_SIZE_LOG2 ) ) + mi_height > y ) { xd -> mi [ x_idx + y * mis ] = mi_addr ; } if ( cpi -> oxcf . aq_mode ) vp9_init_plane_quantizers ( cpi , x ) ; <S2SV_StartBug> if ( bsize < BLOCK_32X32 ) { <S2SV_EndBug> if ( bsize < BLOCK_16X16 ) ctx -> tx_rd_diff [ ALLOW_16X16 ] = ctx -> tx_rd_diff [ ALLOW_8X8 ] ; ctx -> tx_rd_diff [ ALLOW_32X32 ] = ctx -> tx_rd_diff [ ALLOW_16X16 ] ; } if ( is_inter_block ( mbmi ) && mbmi -> sb_type < BLOCK_8X8 ) { mbmi -> mv [ 0 ] . as_int = mi -> bmi [ 3 ] . as_mv [ 0 ] . as_int ; mbmi -> mv [ 1 ] . as_int = mi -> bmi [ 3 ] . as_mv [ 1 ] . as_int ; } x -> skip = ctx -> skip ; <S2SV_StartBug> vpx_memcpy ( x -> zcoeff_blk [ mbmi -> tx_size ] , ctx -> zcoeff_blk , <S2SV_EndBug> <S2SV_StartBug> sizeof ( uint8_t ) * ctx -> num_4x4_blk ) ; <S2SV_EndBug> if ( ! output_enabled ) return ; <S2SV_StartBug> if ( ! vp9_segfeature_active ( & cm -> seg , mbmi -> segment_id , SEG_LVL_SKIP ) ) { <S2SV_EndBug> for ( i = 0 ; i < TX_MODES ; i ++ ) cpi -> rd_tx_select_diff [ i ] += ctx -> tx_rd_diff [ i ] ; } # if CONFIG_INTERNAL_STATS if ( frame_is_intra_only ( cm ) ) { static const int kf_mode_index [ ] = { THR_DC , THR_V_PRED , THR_H_PRED , THR_D45_PRED , THR_D135_PRED , THR_D117_PRED , THR_D153_PRED , THR_D207_PRED , THR_D63_PRED , THR_TM , } ; ++ cpi -> mode_chosen_counts [ kf_mode_index [ mbmi -> mode ] ] ; } else { ++ cpi -> mode_chosen_counts [ ctx -> best_mode_index ] ; } # endif if ( ! frame_is_intra_only ( cm ) ) { if ( is_inter_block ( mbmi ) ) { <S2SV_StartBug> vp9_update_mv_count ( cm , xd ) ; <S2SV_EndBug> if ( cm -> interp_filter == SWITCHABLE ) { const int ctx = vp9_get_pred_context_switchable_interp ( xd ) ; <S2SV_StartBug> ++ cm -> counts . switchable_interp [ ctx ] [ mbmi -> interp_filter ] ; <S2SV_EndBug> } } <S2SV_StartBug> cpi -> rd_comp_pred_diff [ SINGLE_REFERENCE ] += ctx -> single_pred_diff ; <S2SV_EndBug> <S2SV_StartBug> cpi -> rd_comp_pred_diff [ COMPOUND_REFERENCE ] += ctx -> comp_pred_diff ; <S2SV_EndBug> <S2SV_StartBug> cpi -> rd_comp_pred_diff [ REFERENCE_MODE_SELECT ] += ctx -> hybrid_pred_diff ; <S2SV_EndBug> for ( i = 0 ; i < SWITCHABLE_FILTER_CONTEXTS ; ++ i ) <S2SV_StartBug> cpi -> rd_filter_diff [ i ] += ctx -> best_filter_diff [ i ] ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , <S2SV_ModStart> -> common ; RD_COUNTS * const rdc = & td -> rd_counts ; <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> cm -> seg ; const int bw = num_8x8_blocks_wide_lookup [ mi -> mbmi . sb_type ] ; const int bh = num_8x8_blocks_high_lookup [ mi -> mbmi . sb_type ] ; const int x_mis = MIN ( bw , cm -> mi_cols - mi_col ) ; const int y_mis = MIN ( bh , cm -> mi_rows - mi_row ) ; MV_REF * const frame_mvs = cm -> cur_frame -> mvs + mi_row * cm -> mi_cols + mi_col ; int w , h <S2SV_ModStart> * mi ; * x -> mbmi_ext = ctx -> mbmi_ext ; <S2SV_ModStart> seg -> enabled <S2SV_ModEnd> ) { if <S2SV_ModStart> . segment_id = get_segment_id <S2SV_ModEnd> ( cm , <S2SV_ModStart> ) ; } <S2SV_ModEnd> if ( cpi <S2SV_ModStart> , bsize , ctx -> rate , ctx -> dist , x -> skip <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; if ( <S2SV_ModEnd> is_inter_block ( mbmi <S2SV_ModStart> -> skip ; memcpy <S2SV_ModEnd> ( x -> <S2SV_ModStart> , sizeof ( ctx -> zcoeff_blk [ 0 ] <S2SV_ModEnd> ) * ctx <S2SV_ModStart> ) return ; <S2SV_ModEnd> # if CONFIG_INTERNAL_STATS <S2SV_ModStart> { vp9_update_mv_count ( td <S2SV_ModEnd> ) ; if <S2SV_ModStart> ) ; ++ td -> counts -> <S2SV_ModEnd> switchable_interp [ ctx <S2SV_ModStart> ; } } rdc -> comp_pred_diff <S2SV_ModEnd> [ SINGLE_REFERENCE ] <S2SV_ModStart> -> single_pred_diff ; rdc -> comp_pred_diff <S2SV_ModEnd> [ COMPOUND_REFERENCE ] <S2SV_ModStart> -> comp_pred_diff ; rdc -> comp_pred_diff <S2SV_ModEnd> [ REFERENCE_MODE_SELECT ] <S2SV_ModStart> ++ i ) rdc -> filter_diff <S2SV_ModEnd> [ i ] <S2SV_ModStart> ] ; } for ( h = 0 ; h < y_mis ; ++ h ) { MV_REF * const frame_mv = frame_mvs + h * cm -> mi_cols ; for ( w = 0 ; w < x_mis ; ++ w ) { MV_REF * const mv = frame_mv + w ; mv -> ref_frame [ 0 ] = mi -> mbmi . ref_frame [ 0 ] ; mv -> ref_frame [ 1 ] = mi -> mbmi . ref_frame [ 1 ] ; mv -> mv [ 0 ] . as_int = mi -> mbmi . mv [ 0 ] . as_int ; mv -> mv [ 1 ] . as_int = mi -> mbmi . mv [ 1 ] . as_int ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6978\n\n```\nCWE-415 void gdImageWBMPCtx ( gdImagePtr image , int fg , gdIOCtx * out ) { <S2SV_StartBug> int x , y , pos ; <S2SV_EndBug> Wbmp * wbmp ; if ( ( wbmp = createwbmp ( gdImageSX ( image ) , gdImageSY ( image ) , WBMP_WHITE ) ) == NULL ) { gd_error ( \"Could<S2SV_blank>not<S2SV_blank>create<S2SV_blank>WBMP\" ) ; return ; } pos = 0 ; for ( y = 0 ; y < gdImageSY ( image ) ; y ++ ) { for ( x = 0 ; x < gdImageSX ( image ) ; x ++ ) { <S2SV_StartBug> if ( gdImageGetPixel ( image , x , y ) == fg ) { <S2SV_EndBug> wbmp -> bitmap [ pos ] = WBMP_BLACK ; } pos ++ ; } } if ( writewbmp ( wbmp , & gd_putout , out ) ) { gd_error ( \"Could<S2SV_blank>not<S2SV_blank>save<S2SV_blank>WBMP\" ) ; } freewbmp ( wbmp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ) { _gdImageWBMPCtx <S2SV_ModEnd> ( image , <S2SV_ModStart> ( image , fg , out <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-601(开放重定向)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14857\n\n```\nCWE-601 static int oidc_handle_logout ( request_rec * r , oidc_cfg * c , oidc_session_t * session ) { oidc_provider_t * provider = NULL ; char * url = NULL ; <S2SV_StartBug> oidc_util_get_request_parameter ( r , OIDC_REDIRECT_URI_REQUEST_LOGOUT , & url ) ; <S2SV_EndBug> oidc_debug ( r , \"enter<S2SV_blank>(url=%s)\" , url ) ; if ( oidc_is_front_channel_logout ( url ) ) { return oidc_handle_logout_request ( r , c , session , url ) ; } else if ( oidc_is_back_channel_logout ( url ) ) { return oidc_handle_logout_backchannel ( r , c ) ; } if ( ( url == NULL ) || ( apr_strnatcmp ( url , \"\" ) == 0 ) ) { url = c -> default_slo_url ; } else { <S2SV_StartBug> const char * error_description = NULL ; <S2SV_EndBug> apr_uri_t uri ; if ( apr_uri_parse ( r -> pool , url , & uri ) != APR_SUCCESS ) { const char * error_description = apr_psprintf ( r -> pool , \"Logout<S2SV_blank>URL<S2SV_blank>malformed:<S2SV_blank>%s\" , url ) ; oidc_error ( r , \"%s\" , error_description ) ; return oidc_util_html_send_error ( r , c -> error_template , <S2SV_StartBug> \"Malformed<S2SV_blank>URL\" , error_description , <S2SV_EndBug> HTTP_INTERNAL_SERVER_ERROR ) ; } const char * c_host = oidc_get_current_url_host ( r ) ; if ( ( uri . hostname != NULL ) && ( ( strstr ( c_host , uri . hostname ) == NULL ) || ( strstr ( uri . hostname , c_host ) == NULL ) ) ) { error_description = apr_psprintf ( r -> pool , \"logout<S2SV_blank>value<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>the<S2SV_blank>hostname<S2SV_blank>of<S2SV_blank>the<S2SV_blank>current<S2SV_blank>request<S2SV_blank>\\\\\"%s\\\\\"\" , apr_uri_unparse ( r -> pool , & uri , 0 ) , c_host ) ; oidc_error ( r , \"%s\" , error_description ) ; return oidc_util_html_send_error ( r , c -> error_template , \"Invalid<S2SV_blank>Request\" , error_description , HTTP_INTERNAL_SERVER_ERROR ) ; } if ( ( ( strstr ( url , \"\\\\n\" ) != NULL ) || strstr ( url , \"\\\\r\" ) != NULL ) ) { error_description = apr_psprintf ( r -> pool , \"logout<S2SV_blank>value<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>contains<S2SV_blank>illegal<S2SV_blank>\\\\\"\\\\n\\\\\"<S2SV_blank>or<S2SV_blank>\\\\\"\\\\r\\\\\"<S2SV_blank>character(s)\" , url ) ; oidc_error ( r , \"%s\" , error_description ) ; return oidc_util_html_send_error ( r , c -> error_template , \"Invalid<S2SV_blank>Request\" , error_description , HTTP_INTERNAL_SERVER_ERROR ) ; } } oidc_get_provider_from_session ( r , c , session , & provider ) ; if ( ( provider != NULL ) && ( provider -> end_session_endpoint != NULL ) ) { const char * id_token_hint = oidc_session_get_idtoken ( r , session ) ; char * logout_request = apr_pstrdup ( r -> pool , provider -> end_session_endpoint ) ; if ( id_token_hint != NULL ) { logout_request = apr_psprintf ( r -> pool , \"%s%sid_token_hint=%s\" , logout_request , strchr ( logout_request ? logout_request : \"\" , OIDC_CHAR_QUERY ) != NULL ? OIDC_STR_AMP : OIDC_STR_QUERY , oidc_util_escape_string ( r , id_token_hint ) ) ; } if ( url != NULL ) { logout_request = apr_psprintf ( r -> pool , \"%s%spost_logout_redirect_uri=%s\" , logout_request , strchr ( logout_request ? logout_request : \"\" , OIDC_CHAR_QUERY ) != NULL ? OIDC_STR_AMP : OIDC_STR_QUERY , oidc_util_escape_string ( r , url ) ) ; } url = logout_request ; } return oidc_handle_logout_request ( r , c , session , url ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = NULL ; char * error_str = NULL ; char * error_description = NULL ; <S2SV_ModStart> } else { if ( oidc_validate_post_logout_url ( r , url , & error_str , & error_description ) == FALSE ) { <S2SV_ModEnd> return oidc_util_html_send_error ( <S2SV_ModStart> -> error_template , error_str , error_description , HTTP_BAD_REQUEST <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5225\n\n```\nCWE-119 static int tiffcp ( TIFF * in , TIFF * out ) { <S2SV_StartBug> uint16 bitspersample , samplesperpixel = 1 ; <S2SV_EndBug> uint16 input_compression , input_photometric = PHOTOMETRIC_MINISBLACK ; copyFunc cf ; uint32 width , length ; struct cpTag * p ; CopyField ( TIFFTAG_IMAGEWIDTH , width ) ; CopyField ( TIFFTAG_IMAGELENGTH , length ) ; CopyField ( TIFFTAG_BITSPERSAMPLE , bitspersample ) ; CopyField ( TIFFTAG_SAMPLESPERPIXEL , samplesperpixel ) ; if ( compression != ( uint16 ) - 1 ) TIFFSetField ( out , TIFFTAG_COMPRESSION , compression ) ; else CopyField ( TIFFTAG_COMPRESSION , compression ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_COMPRESSION , & input_compression ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_PHOTOMETRIC , & input_photometric ) ; if ( input_compression == COMPRESSION_JPEG ) { TIFFSetField ( in , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RGB ) ; } else if ( input_photometric == PHOTOMETRIC_YCBCR ) { uint16 subsamplinghor , subsamplingver ; TIFFGetFieldDefaulted ( in , TIFFTAG_YCBCRSUBSAMPLING , & subsamplinghor , & subsamplingver ) ; if ( subsamplinghor != 1 || subsamplingver != 1 ) { fprintf ( stderr , \"tiffcp:<S2SV_blank>%s:<S2SV_blank>Can\\'t<S2SV_blank>copy/convert<S2SV_blank>subsampled<S2SV_blank>image.\\\\n\" , TIFFFileName ( in ) ) ; return FALSE ; } } if ( compression == COMPRESSION_JPEG ) { if ( input_photometric == PHOTOMETRIC_RGB && jpegcolormode == JPEGCOLORMODE_RGB ) TIFFSetField ( out , TIFFTAG_PHOTOMETRIC , PHOTOMETRIC_YCBCR ) ; else TIFFSetField ( out , TIFFTAG_PHOTOMETRIC , input_photometric ) ; } else if ( compression == COMPRESSION_SGILOG || compression == COMPRESSION_SGILOG24 ) TIFFSetField ( out , TIFFTAG_PHOTOMETRIC , samplesperpixel == 1 ? PHOTOMETRIC_LOGL : PHOTOMETRIC_LOGLUV ) ; else if ( input_compression == COMPRESSION_JPEG && samplesperpixel == 3 ) { TIFFSetField ( out , TIFFTAG_PHOTOMETRIC , PHOTOMETRIC_RGB ) ; } else CopyTag ( TIFFTAG_PHOTOMETRIC , 1 , TIFF_SHORT ) ; if ( fillorder != 0 ) TIFFSetField ( out , TIFFTAG_FILLORDER , fillorder ) ; else CopyTag ( TIFFTAG_FILLORDER , 1 , TIFF_SHORT ) ; TIFFGetFieldDefaulted ( in , TIFFTAG_ORIENTATION , & orientation ) ; switch ( orientation ) { case ORIENTATION_BOTRIGHT : case ORIENTATION_RIGHTBOT : TIFFWarning ( TIFFFileName ( in ) , \"using<S2SV_blank>bottom-left<S2SV_blank>orientation\" ) ; orientation = ORIENTATION_BOTLEFT ; case ORIENTATION_LEFTBOT : case ORIENTATION_BOTLEFT : break ; case ORIENTATION_TOPRIGHT : case ORIENTATION_RIGHTTOP : default : TIFFWarning ( TIFFFileName ( in ) , \"using<S2SV_blank>top-left<S2SV_blank>orientation\" ) ; orientation = ORIENTATION_TOPLEFT ; case ORIENTATION_LEFTTOP : case ORIENTATION_TOPLEFT : break ; } TIFFSetField ( out , TIFFTAG_ORIENTATION , orientation ) ; if ( outtiled == - 1 ) outtiled = TIFFIsTiled ( in ) ; if ( outtiled ) { if ( tilewidth == ( uint32 ) - 1 ) TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tilewidth ) ; if ( tilelength == ( uint32 ) - 1 ) TIFFGetField ( in , TIFFTAG_TILELENGTH , & tilelength ) ; TIFFDefaultTileSize ( out , & tilewidth , & tilelength ) ; TIFFSetField ( out , TIFFTAG_TILEWIDTH , tilewidth ) ; TIFFSetField ( out , TIFFTAG_TILELENGTH , tilelength ) ; } else { if ( rowsperstrip == ( uint32 ) 0 ) { if ( ! TIFFGetField ( in , TIFFTAG_ROWSPERSTRIP , & rowsperstrip ) ) { rowsperstrip = TIFFDefaultStripSize ( out , rowsperstrip ) ; } if ( rowsperstrip > length && rowsperstrip != ( uint32 ) - 1 ) rowsperstrip = length ; } else if ( rowsperstrip == ( uint32 ) - 1 ) rowsperstrip = length ; TIFFSetField ( out , TIFFTAG_ROWSPERSTRIP , rowsperstrip ) ; } if ( config != ( uint16 ) - 1 ) TIFFSetField ( out , TIFFTAG_PLANARCONFIG , config ) ; else CopyField ( TIFFTAG_PLANARCONFIG , config ) ; if ( samplesperpixel <= 4 ) CopyTag ( TIFFTAG_TRANSFERFUNCTION , 4 , TIFF_SHORT ) ; CopyTag ( TIFFTAG_COLORMAP , 4 , TIFF_SHORT ) ; switch ( compression ) { case COMPRESSION_JPEG : TIFFSetField ( out , TIFFTAG_JPEGQUALITY , quality ) ; TIFFSetField ( out , TIFFTAG_JPEGCOLORMODE , jpegcolormode ) ; break ; case COMPRESSION_JBIG : CopyTag ( TIFFTAG_FAXRECVPARAMS , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXRECVTIME , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXSUBADDRESS , 1 , TIFF_ASCII ) ; CopyTag ( TIFFTAG_FAXDCS , 1 , TIFF_ASCII ) ; break ; case COMPRESSION_LZW : case COMPRESSION_ADOBE_DEFLATE : case COMPRESSION_DEFLATE : case COMPRESSION_LZMA : if ( predictor != ( uint16 ) - 1 ) TIFFSetField ( out , TIFFTAG_PREDICTOR , predictor ) ; else CopyField ( TIFFTAG_PREDICTOR , predictor ) ; if ( preset != - 1 ) { if ( compression == COMPRESSION_ADOBE_DEFLATE || compression == COMPRESSION_DEFLATE ) TIFFSetField ( out , TIFFTAG_ZIPQUALITY , preset ) ; else if ( compression == COMPRESSION_LZMA ) TIFFSetField ( out , TIFFTAG_LZMAPRESET , preset ) ; } break ; case COMPRESSION_CCITTFAX3 : case COMPRESSION_CCITTFAX4 : if ( compression == COMPRESSION_CCITTFAX3 ) { if ( g3opts != ( uint32 ) - 1 ) TIFFSetField ( out , TIFFTAG_GROUP3OPTIONS , g3opts ) ; else CopyField ( TIFFTAG_GROUP3OPTIONS , g3opts ) ; } else CopyTag ( TIFFTAG_GROUP4OPTIONS , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_BADFAXLINES , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_CLEANFAXDATA , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_CONSECUTIVEBADFAXLINES , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXRECVPARAMS , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXRECVTIME , 1 , TIFF_LONG ) ; CopyTag ( TIFFTAG_FAXSUBADDRESS , 1 , TIFF_ASCII ) ; break ; } { uint32 len32 ; void * * data ; if ( TIFFGetField ( in , TIFFTAG_ICCPROFILE , & len32 , & data ) ) TIFFSetField ( out , TIFFTAG_ICCPROFILE , len32 , data ) ; } { uint16 ninks ; const char * inknames ; if ( TIFFGetField ( in , TIFFTAG_NUMBEROFINKS , & ninks ) ) { TIFFSetField ( out , TIFFTAG_NUMBEROFINKS , ninks ) ; if ( TIFFGetField ( in , TIFFTAG_INKNAMES , & inknames ) ) { int inknameslen = strlen ( inknames ) + 1 ; const char * cp = inknames ; while ( ninks > 1 ) { cp = strchr ( cp , '\\\\0' ) ; cp ++ ; inknameslen += ( strlen ( cp ) + 1 ) ; ninks -- ; } TIFFSetField ( out , TIFFTAG_INKNAMES , inknameslen , inknames ) ; } } } { unsigned short pg0 , pg1 ; if ( pageInSeq == 1 ) { if ( pageNum < 0 ) { if ( TIFFGetField ( in , TIFFTAG_PAGENUMBER , & pg0 , & pg1 ) ) TIFFSetField ( out , TIFFTAG_PAGENUMBER , pg0 , pg1 ) ; } else TIFFSetField ( out , TIFFTAG_PAGENUMBER , pageNum ++ , 0 ) ; } else { if ( TIFFGetField ( in , TIFFTAG_PAGENUMBER , & pg0 , & pg1 ) ) { if ( pageNum < 0 ) TIFFSetField ( out , TIFFTAG_PAGENUMBER , pg0 , pg1 ) ; else TIFFSetField ( out , TIFFTAG_PAGENUMBER , pageNum ++ , 0 ) ; } } } for ( p = tags ; p < & tags [ NTAGS ] ; p ++ ) CopyTag ( p -> tag , p -> count , p -> type ) ; cf = pickCopyFunc ( in , out , bitspersample , samplesperpixel ) ; return ( cf ? ( * cf ) ( in , out , length , width , samplesperpixel ) : FALSE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { uint16 bitspersample = 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static int pci_emul_dinit ( struct vmctx * ctx , struct pci_vdev * dev , char * opts ) { <S2SV_StartBug> int error ; <S2SV_EndBug> struct pci_emul_dummy * dummy ; dummy = calloc ( 1 , sizeof ( struct pci_emul_dummy ) ) ; dev -> arg = dummy ; pci_set_cfgdata16 ( dev , PCIR_DEVICE , 0x0001 ) ; pci_set_cfgdata16 ( dev , PCIR_VENDOR , 0x10DD ) ; pci_set_cfgdata8 ( dev , PCIR_CLASS , 0x02 ) ; <S2SV_StartBug> error = pci_emul_add_msicap ( dev , PCI_EMUL_MSI_MSGS ) ; <S2SV_EndBug> assert ( error == 0 ) ; <S2SV_StartBug> error = pci_emul_alloc_bar ( dev , 0 , PCIBAR_IO , DIOSZ ) ; <S2SV_EndBug> assert ( error == 0 ) ; <S2SV_StartBug> error = pci_emul_alloc_bar ( dev , 1 , PCIBAR_MEM32 , DMEMSZ ) ; <S2SV_EndBug> assert ( error == 0 ) ; error = pci_emul_alloc_bar ( dev , 2 , PCIBAR_MEM32 , DMEMSZ ) ; <S2SV_StartBug> assert ( error == 0 ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> opts ) { <S2SV_ModEnd> struct pci_emul_dummy * <S2SV_ModStart> 0x02 ) ; return <S2SV_ModEnd> pci_emul_add_msicap ( dev <S2SV_ModStart> , PCI_EMUL_MSI_MSGS ) || <S2SV_ModEnd> pci_emul_alloc_bar ( dev <S2SV_ModStart> , DIOSZ ) || <S2SV_ModEnd> pci_emul_alloc_bar ( dev <S2SV_ModStart> , DMEMSZ ) || <S2SV_ModEnd> pci_emul_alloc_bar ( dev <S2SV_ModStart> DMEMSZ ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int ASN1_item_verify ( const ASN1_ITEM * it , X509_ALGOR * a , ASN1_BIT_STRING * signature , void * asn , EVP_PKEY * pkey ) { EVP_MD_CTX ctx ; unsigned char * buf_in = NULL ; int ret = - 1 , inl ; int mdnid , pknid ; if ( ! pkey ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_PASSED_NULL_PARAMETER ) ; return - 1 ; } if ( signature -> type == V_ASN1_BIT_STRING && signature -> flags & 0x7 ) { <S2SV_StartBug> ASN1err ( ASN1_F_ASN1_VERIFY , ASN1_R_INVALID_BIT_STRING_BITS_LEFT ) ; <S2SV_EndBug> return - 1 ; } EVP_MD_CTX_init ( & ctx ) ; if ( ! OBJ_find_sigid_algs ( OBJ_obj2nid ( a -> algorithm ) , & mdnid , & pknid ) ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM ) ; goto err ; } if ( mdnid == NID_undef ) { if ( ! pkey -> ameth || ! pkey -> ameth -> item_verify ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM ) ; goto err ; } ret = pkey -> ameth -> item_verify ( & ctx , it , asn , a , signature , pkey ) ; if ( ret != 2 ) goto err ; ret = - 1 ; } else { const EVP_MD * type ; type = EVP_get_digestbynid ( mdnid ) ; if ( type == NULL ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM ) ; goto err ; } if ( EVP_PKEY_type ( pknid ) != pkey -> ameth -> pkey_id ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_WRONG_PUBLIC_KEY_TYPE ) ; goto err ; } if ( ! EVP_DigestVerifyInit ( & ctx , NULL , type , NULL , pkey ) ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } } inl = ASN1_item_i2d ( asn , & buf_in , it ) ; if ( buf_in == NULL ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_MALLOC_FAILURE ) ; goto err ; } ret = EVP_DigestVerifyUpdate ( & ctx , buf_in , inl ) ; OPENSSL_cleanse ( buf_in , ( unsigned int ) inl ) ; OPENSSL_free ( buf_in ) ; if ( ! ret ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; goto err ; } ret = - 1 ; if ( EVP_DigestVerifyFinal ( & ctx , signature -> data , ( size_t ) signature -> length ) <= 0 ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } ret = 1 ; err : EVP_MD_CTX_cleanup ( & ctx ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY <S2SV_ModEnd> , ASN1_R_INVALID_BIT_STRING_BITS_LEFT )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10661\n\n```\nCWE-416 static void timerfd_setup_cancel ( struct timerfd_ctx * ctx , int flags ) <S2SV_StartBug> { <S2SV_EndBug> if ( ( ctx -> clockid == CLOCK_REALTIME || ctx -> clockid == CLOCK_REALTIME_ALARM ) && ( flags & TFD_TIMER_ABSTIME ) && ( flags & TFD_TIMER_CANCEL_ON_SET ) ) { if ( ! ctx -> might_cancel ) { ctx -> might_cancel = true ; spin_lock ( & cancel_lock ) ; list_add_rcu ( & ctx -> clist , & cancel_list ) ; spin_unlock ( & cancel_lock ) ; } <S2SV_StartBug> } else if ( ctx -> might_cancel ) { <S2SV_EndBug> timerfd_remove_cancel ( ctx ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flags ) { spin_lock ( & ctx -> cancel_lock ) ; <S2SV_ModStart> } } else { __timerfd_remove_cancel <S2SV_ModEnd> ( ctx ) <S2SV_ModStart> ) ; } spin_unlock ( & ctx -> cancel_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13032\n\n```\nCWE-125 static void print_attr_string ( netdissect_options * ndo , register const u_char * data , u_int length , u_short attr_code ) { register u_int i ; ND_TCHECK2 ( data [ 0 ] , length ) ; switch ( attr_code ) { case TUNNEL_PASS : if ( length < 3 ) <S2SV_StartBug> { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } if ( * data && ( * data <= 0x1F ) ) ND_PRINT ( ( ndo , \"Tag[%u]<S2SV_blank>\" , * data ) ) ; else ND_PRINT ( ( ndo , \"Tag[Unused]<S2SV_blank>\" ) ) ; data ++ ; length -- ; ND_PRINT ( ( ndo , \"Salt<S2SV_blank>%u<S2SV_blank>\" , EXTRACT_16BITS ( data ) ) ) ; data += 2 ; length -= 2 ; break ; case TUNNEL_CLIENT_END : case TUNNEL_SERVER_END : case TUNNEL_PRIV_GROUP : case TUNNEL_ASSIGN_ID : case TUNNEL_CLIENT_AUTH : case TUNNEL_SERVER_AUTH : if ( * data <= 0x1F ) { if ( length < 1 ) <S2SV_StartBug> { <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return ; } if ( * data ) ND_PRINT ( ( ndo , \"Tag[%u]<S2SV_blank>\" , * data ) ) ; else ND_PRINT ( ( ndo , \"Tag[Unused]<S2SV_blank>\" ) ) ; data ++ ; length -- ; } break ; <S2SV_StartBug> case EGRESS_VLAN_NAME : <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>(0x%02x)<S2SV_blank>\" , tok2str ( rfc4675_tagged , \"Unknown<S2SV_blank>tag\" , * data ) , * data ) ) ; data ++ ; length -- ; break ; } <S2SV_StartBug> for ( i = 0 ; * data && i < length ; i ++ , data ++ ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"%c\" , ( * data < 32 || * data > 126 ) ? '.' : * data ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 3 ) goto trunc ; <S2SV_ModEnd> if ( * <S2SV_ModStart> < 1 ) goto trunc ; if ( * data ) ND_PRINT ( ( ndo , \"Tag[%u]<S2SV_blank>\" , * data ) ) ; else ND_PRINT ( ( ndo , \"Tag[Unused]<S2SV_blank>\" ) ) ; data ++ ; length -- ; } <S2SV_ModEnd> break ; case <S2SV_ModStart> case EGRESS_VLAN_NAME : if ( length < 1 ) goto trunc ; <S2SV_ModStart> = 0 ; i < length && * data <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-21674\n\n```\nCWE-787 static int strncat_from_utf8_libarchive2 ( struct archive_string * as , const void * _p , size_t len , struct archive_string_conv * sc ) { const char * s ; int n ; char * p ; char * end ; uint32_t unicode ; # if HAVE_WCRTOMB mbstate_t shift_state ; memset ( & shift_state , 0 , sizeof ( shift_state ) ) ; # else wctomb ( NULL , L'\\\\0' ) ; # endif ( void ) sc ; if ( archive_string_ensure ( as , as -> length + len + 1 ) == NULL ) return ( - 1 ) ; s = ( const char * ) _p ; p = as -> s + as -> length ; end = as -> s + as -> buffer_length - MB_CUR_MAX - 1 ; while ( ( n = _utf8_to_unicode ( & unicode , s , len ) ) != 0 ) { wchar_t wc ; if ( p >= end ) { as -> length = p - as -> s ; if ( archive_string_ensure ( as , <S2SV_StartBug> as -> length + len * 2 + 1 ) == NULL ) <S2SV_EndBug> return ( - 1 ) ; p = as -> s + as -> length ; end = as -> s + as -> buffer_length - MB_CUR_MAX - 1 ; } if ( n < 0 ) { n *= - 1 ; wc = L'?' ; } else wc = ( wchar_t ) unicode ; s += n ; len -= n ; # if HAVE_WCRTOMB n = ( int ) wcrtomb ( p , wc , & shift_state ) ; # else n = ( int ) wctomb ( p , wc ) ; # endif if ( n == - 1 ) return ( - 1 ) ; p += n ; } as -> length = p - as -> s ; as -> s [ as -> length ] = '\\\\0' ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> length + max ( <S2SV_ModStart> len * 2 , ( size_t ) MB_CUR_MAX )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 interval * PGTYPESinterval_from_asc ( char * str , char * * endptr ) { interval * result = NULL ; fsec_t fsec ; struct tm tt , * tm = & tt ; int dtype ; int nf ; char * field [ MAXDATEFIELDS ] ; int ftype [ MAXDATEFIELDS ] ; char lowstr [ MAXDATELEN + MAXDATEFIELDS ] ; char * realptr ; char * * ptr = ( endptr != NULL ) ? endptr : & realptr ; tm -> tm_year = 0 ; tm -> tm_mon = 0 ; tm -> tm_mday = 0 ; tm -> tm_hour = 0 ; tm -> tm_min = 0 ; tm -> tm_sec = 0 ; fsec = 0 ; <S2SV_StartBug> if ( strlen ( str ) >= sizeof ( lowstr ) ) <S2SV_EndBug> { errno = PGTYPES_INTVL_BAD_INTERVAL ; <S2SV_StartBug> return NULL ; <S2SV_EndBug> } if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || ( DecodeInterval ( field , ftype , nf , & dtype , tm , & fsec ) != 0 && DecodeISO8601Interval ( str , & dtype , tm , & fsec ) != 0 ) ) { errno = PGTYPES_INTVL_BAD_INTERVAL ; <S2SV_StartBug> return NULL ; <S2SV_EndBug> } result = ( interval * ) pgtypes_alloc ( sizeof ( interval ) ) ; if ( ! result ) return NULL ; if ( dtype != DTK_DELTA ) { errno = PGTYPES_INTVL_BAD_INTERVAL ; free ( result ) ; return NULL ; } <S2SV_StartBug> if ( tm2interval ( tm , fsec , result ) != 0 ) <S2SV_EndBug> { errno = PGTYPES_INTVL_BAD_INTERVAL ; free ( result ) ; return NULL ; } errno = 0 ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( str ) > MAXDATELEN ) { errno = PGTYPES_INTVL_BAD_INTERVAL ; return NULL ; } if ( ParseDateTime ( str , lowstr , field , ftype , & nf , ptr ) != 0 || ( DecodeInterval ( field , ftype , nf , & dtype , tm , & fsec ) != 0 && DecodeISO8601Interval ( str , & dtype , tm , & fsec ) != 0 ) ) { errno = PGTYPES_INTVL_BAD_INTERVAL ; return NULL ; } result = ( interval * ) pgtypes_alloc ( sizeof ( interval ) ) ; if ( ! result ) return NULL ; if ( dtype != DTK_DELTA <S2SV_ModEnd> ) { errno <S2SV_ModStart> = PGTYPES_INTVL_BAD_INTERVAL ; free ( result ) ; return NULL ; } if ( tm2interval ( tm , fsec , result ) != 0 <S2SV_ModEnd> ) { errno <S2SV_ModStart> = PGTYPES_INTVL_BAD_INTERVAL ; <S2SV_ModEnd> free ( result <S2SV_ModStart> NULL ; } <S2SV_ModEnd> errno = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_unregister_devs_sas_addr ( struct domain_device * parent , int phy_id , bool last ) { struct expander_device * ex_dev = & parent -> ex_dev ; struct ex_phy * phy = & ex_dev -> ex_phy [ phy_id ] ; struct domain_device * child , * n , * found = NULL ; if ( last ) { list_for_each_entry_safe ( child , n , & ex_dev -> children , siblings ) { if ( SAS_ADDR ( child -> sas_addr ) == SAS_ADDR ( phy -> attached_sas_addr ) ) { set_bit ( SAS_DEV_GONE , & child -> state ) ; if ( child -> dev_type == SAS_EDGE_EXPANDER_DEVICE || child -> dev_type == SAS_FANOUT_EXPANDER_DEVICE ) sas_unregister_ex_tree ( parent -> port , child ) ; else sas_unregister_dev ( parent -> port , child ) ; found = child ; break ; } } sas_disable_routing ( parent , phy -> attached_sas_addr ) ; } memset ( phy -> attached_sas_addr , 0 , SAS_ADDR_SIZE ) ; if ( phy -> port ) { sas_port_delete_phy ( phy -> port , phy -> phy ) ; sas_device_set_phy ( found , phy -> port ) ; if ( phy -> port -> num_phys == 0 ) <S2SV_StartBug> sas_port_delete ( phy -> port ) ; <S2SV_EndBug> phy -> port = NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) list_add_tail ( & phy -> port -> del_list , & parent -> port -> sas_port_del_list <S2SV_ModEnd> ) ; phy\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15855\n\n```\nCWE-476 bool CompileKeymap ( XkbFile * file , struct xkb_keymap * keymap , enum merge_mode merge ) { bool ok ; XkbFile * files [ LAST_KEYMAP_FILE_TYPE + 1 ] = { NULL } ; enum xkb_file_type type ; struct xkb_context * ctx = keymap -> ctx ; for ( file = ( XkbFile * ) file -> defs ; file ; file = ( XkbFile * ) file -> common . next ) { if ( file -> file_type < FIRST_KEYMAP_FILE_TYPE || file -> file_type > LAST_KEYMAP_FILE_TYPE ) { <S2SV_StartBug> log_err ( ctx , \"Cannot<S2SV_blank>define<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>a<S2SV_blank>keymap<S2SV_blank>file\\\\n\" , <S2SV_EndBug> <S2SV_StartBug> xkb_file_type_to_string ( file -> file_type ) ) ; <S2SV_EndBug> continue ; } if ( files [ file -> file_type ] ) { log_err ( ctx , \"More<S2SV_blank>than<S2SV_blank>one<S2SV_blank>%s<S2SV_blank>section<S2SV_blank>in<S2SV_blank>keymap<S2SV_blank>file;<S2SV_blank>\" \"All<S2SV_blank>sections<S2SV_blank>after<S2SV_blank>the<S2SV_blank>first<S2SV_blank>ignored\\\\n\" , xkb_file_type_to_string ( file -> file_type ) ) ; continue ; } files [ file -> file_type ] = file ; } ok = true ; for ( type = FIRST_KEYMAP_FILE_TYPE ; type <= LAST_KEYMAP_FILE_TYPE ; type ++ ) { if ( files [ type ] == NULL ) { log_err ( ctx , \"Required<S2SV_blank>section<S2SV_blank>%s<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>keymap\\\\n\" , xkb_file_type_to_string ( type ) ) ; ok = false ; } } if ( ! ok ) return false ; for ( type = FIRST_KEYMAP_FILE_TYPE ; type <= LAST_KEYMAP_FILE_TYPE ; type ++ ) { log_dbg ( ctx , \"Compiling<S2SV_blank>%s<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , xkb_file_type_to_string ( type ) , files [ type ] -> name ) ; ok = compile_file_fns [ type ] ( files [ type ] , keymap , merge ) ; if ( ! ok ) { log_err ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>compile<S2SV_blank>%s\\\\n\" , xkb_file_type_to_string ( type ) ) ; return false ; } } return UpdateDerivedKeymapFields ( keymap ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> LAST_KEYMAP_FILE_TYPE ) { if ( file -> file_type == FILE_TYPE_GEOMETRY ) { log_vrb ( ctx , 1 , \"Geometry<S2SV_blank>sections<S2SV_blank>are<S2SV_blank>not<S2SV_blank>supported;<S2SV_blank>ignoring\\\\n\" ) ; } else { <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rtcd ( ) { <S2SV_StartBug> vpx_scale_rtcd ( ) ; <S2SV_EndBug> once ( setup_rtcd_internal ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) { <S2SV_ModEnd> once ( setup_rtcd_internal\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-611(XXE(XML外部实体)处理)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-26247\n\n```\nCWE-611 <S2SV_StartBug> static VALUE from_document ( VALUE klass , VALUE document ) <S2SV_EndBug> { xmlDocPtr doc ; xmlSchemaParserCtxtPtr ctx ; xmlSchemaPtr schema ; VALUE errors ; VALUE rb_schema ; <S2SV_StartBug> Data_Get_Struct ( document , xmlDoc , doc ) ; <S2SV_EndBug> <S2SV_StartBug> doc = doc -> doc ; <S2SV_EndBug> if ( has_blank_nodes_p ( DOC_NODE_CACHE ( doc ) ) ) { rb_raise ( rb_eArgError , \"Creating<S2SV_blank>a<S2SV_blank>schema<S2SV_blank>from<S2SV_blank>a<S2SV_blank>document<S2SV_blank>that<S2SV_blank>has<S2SV_blank>blank<S2SV_blank>nodes<S2SV_blank>exposed<S2SV_blank>to<S2SV_blank>Ruby<S2SV_blank>is<S2SV_blank>dangerous\" ) ; } ctx = xmlSchemaNewDocParserCtxt ( doc ) ; errors = rb_ary_new ( ) ; xmlSetStructuredErrorFunc ( ( void * ) errors , Nokogiri_error_array_pusher ) ; # ifdef HAVE_XMLSCHEMASETPARSERSTRUCTUREDERRORS xmlSchemaSetParserStructuredErrors ( ctx , Nokogiri_error_array_pusher , ( void * ) errors ) ; # endif schema = xmlSchemaParse ( ctx ) ; xmlSetStructuredErrorFunc ( NULL , NULL ) ; xmlSchemaFreeParserCtxt ( ctx ) ; if ( NULL == schema ) { xmlErrorPtr error = xmlGetLastError ( ) ; if ( error ) Nokogiri_error_raise ( NULL , error ) ; else rb_raise ( rb_eRuntimeError , \"Could<S2SV_blank>not<S2SV_blank>parse<S2SV_blank>document\" ) ; return Qnil ; } rb_schema = Data_Wrap_Struct ( klass , 0 , dealloc , schema ) ; rb_iv_set ( rb_schema , \"@errors\" , errors ) ; <S2SV_StartBug> return rb_schema ; <S2SV_EndBug> return Qnil ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> VALUE from_document ( int argc , VALUE * argv , VALUE klass ) { VALUE document ; VALUE parse_options ; int parse_options_int ; <S2SV_ModEnd> xmlDocPtr doc ; <S2SV_ModStart> VALUE rb_schema ; int scanned_args = 0 ; scanned_args = rb_scan_args ( argc , argv , \"11\" , & document , & parse_options ) ; <S2SV_ModStart> doc -> doc ; if ( scanned_args == 1 ) { parse_options = rb_const_get ( rb_const_get ( mNokogiriXml , rb_intern ( \"ParseOptions\" ) ) , rb_intern ( \"DEFAULT_SCHEMA\" ) ) ; } parse_options_int = ( int ) NUM2INT ( rb_funcall ( parse_options , rb_intern ( \"to_i\" ) , 0 ) ) <S2SV_ModStart> errors ) ; rb_iv_set ( rb_schema , \"@parse_options\" , parse_options ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-29605\n\n```\nCWE-190 TfLiteIntArray * TfLiteIntArrayCreate ( int size ) { <S2SV_StartBug> TfLiteIntArray * ret = <S2SV_EndBug> <S2SV_StartBug> ( TfLiteIntArray * ) malloc ( TfLiteIntArrayGetSizeInBytes ( size ) ) ; <S2SV_EndBug> ret -> size = size ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) { int alloc_size = TfLiteIntArrayGetSizeInBytes ( size ) ; if ( alloc_size <= 0 ) return NULL ; <S2SV_ModStart> ) malloc ( alloc_size ) ; if ( ! ret ) return ret <S2SV_ModEnd> ; ret ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19052\n\n```\nCWE-401 static int gs_can_open ( struct net_device * netdev ) { struct gs_can * dev = netdev_priv ( netdev ) ; struct gs_usb * parent = dev -> parent ; int rc , i ; struct gs_device_mode * dm ; u32 ctrlmode ; rc = open_candev ( netdev ) ; if ( rc ) return rc ; if ( atomic_add_return ( 1 , & parent -> active_channels ) == 1 ) { for ( i = 0 ; i < GS_MAX_RX_URBS ; i ++ ) { struct urb * urb ; u8 * buf ; urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! urb ) return - ENOMEM ; buf = usb_alloc_coherent ( dev -> udev , sizeof ( struct gs_host_frame ) , GFP_KERNEL , & urb -> transfer_dma ) ; if ( ! buf ) { netdev_err ( netdev , \"No<S2SV_blank>memory<S2SV_blank>left<S2SV_blank>for<S2SV_blank>USB<S2SV_blank>buffer\\\\n\" ) ; usb_free_urb ( urb ) ; return - ENOMEM ; } usb_fill_bulk_urb ( urb , dev -> udev , usb_rcvbulkpipe ( dev -> udev , GSUSB_ENDPOINT_IN ) , buf , sizeof ( struct gs_host_frame ) , gs_usb_receive_bulk_callback , parent ) ; urb -> transfer_flags |= URB_NO_TRANSFER_DMA_MAP ; usb_anchor_urb ( urb , & parent -> rx_submitted ) ; rc = usb_submit_urb ( urb , GFP_KERNEL ) ; if ( rc ) { if ( rc == - ENODEV ) netif_device_detach ( dev -> netdev ) ; netdev_err ( netdev , \"usb_submit<S2SV_blank>failed<S2SV_blank>(err=%d)\\\\n\" , rc ) ; <S2SV_StartBug> usb_unanchor_urb ( urb ) ; <S2SV_EndBug> break ; } usb_free_urb ( urb ) ; } } dm = kmalloc ( sizeof ( * dm ) , GFP_KERNEL ) ; if ( ! dm ) return - ENOMEM ; ctrlmode = dev -> can . ctrlmode ; dm -> flags = 0 ; if ( ctrlmode & CAN_CTRLMODE_LOOPBACK ) dm -> flags |= GS_CAN_MODE_LOOP_BACK ; else if ( ctrlmode & CAN_CTRLMODE_LISTENONLY ) dm -> flags |= GS_CAN_MODE_LISTEN_ONLY ; if ( ctrlmode & CAN_CTRLMODE_ONE_SHOT ) dm -> flags |= GS_CAN_MODE_ONE_SHOT ; if ( ctrlmode & CAN_CTRLMODE_3_SAMPLES ) dm -> flags |= GS_CAN_MODE_TRIPLE_SAMPLE ; dm -> mode = GS_CAN_MODE_START ; rc = usb_control_msg ( interface_to_usbdev ( dev -> iface ) , usb_sndctrlpipe ( interface_to_usbdev ( dev -> iface ) , 0 ) , GS_USB_BREQ_MODE , USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE , dev -> channel , 0 , dm , sizeof ( * dm ) , 1000 ) ; if ( rc < 0 ) { netdev_err ( netdev , \"Couldn\\'t<S2SV_blank>start<S2SV_blank>device<S2SV_blank>(err=%d)\\\\n\" , rc ) ; kfree ( dm ) ; return rc ; } kfree ( dm ) ; dev -> can . state = CAN_STATE_ERROR_ACTIVE ; if ( ! ( dev -> can . ctrlmode & CAN_CTRLMODE_LISTENONLY ) ) netif_start_queue ( netdev ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; usb_unanchor_urb ( urb ) ; usb_free_urb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 socket_t * socket_accept ( const socket_t * socket ) { assert ( socket != NULL ) ; <S2SV_StartBug> int fd = accept ( socket -> fd , NULL , NULL ) ; <S2SV_EndBug> if ( fd == INVALID_FD ) { LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>accept<S2SV_blank>socket:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; return NULL ; } socket_t * ret = ( socket_t * ) osi_calloc ( sizeof ( socket_t ) ) ; if ( ! ret ) { close ( fd ) ; LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>socket.\" , __func__ ) ; return NULL ; } ret -> fd = fd ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int fd = TEMP_FAILURE_RETRY ( <S2SV_ModStart> NULL , NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 int perf_event_task_enable ( void ) <S2SV_StartBug> { <S2SV_EndBug> struct perf_event * event ; mutex_lock ( & current -> perf_event_mutex ) ; <S2SV_StartBug> list_for_each_entry ( event , & current -> perf_event_list , owner_entry ) <S2SV_EndBug> <S2SV_StartBug> perf_event_for_each_child ( event , perf_event_enable ) ; <S2SV_EndBug> mutex_unlock ( & current -> perf_event_mutex ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { struct perf_event_context * ctx ; <S2SV_ModStart> , owner_entry ) { ctx = perf_event_ctx_lock ( event ) ; <S2SV_ModStart> ( event , _perf_event_enable ) ; perf_event_ctx_unlock ( event , ctx ) ; } <S2SV_ModEnd> mutex_unlock ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8066\n\n```\nCWE-119 static int gs_usb_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct gs_usb * dev ; int rc = - ENOMEM ; unsigned int icount , i ; <S2SV_StartBug> struct gs_host_config hconf = { <S2SV_EndBug> . byte_order = 0x0000beef , } ; <S2SV_StartBug> struct gs_device_config dconf ; <S2SV_EndBug> rc = usb_control_msg ( interface_to_usbdev ( intf ) , usb_sndctrlpipe ( interface_to_usbdev ( intf ) , 0 ) , GS_USB_BREQ_HOST_FORMAT , USB_DIR_OUT | USB_TYPE_VENDOR | USB_RECIP_INTERFACE , 1 , intf -> altsetting [ 0 ] . desc . bInterfaceNumber , <S2SV_StartBug> & hconf , <S2SV_EndBug> <S2SV_StartBug> sizeof ( hconf ) , <S2SV_EndBug> 1000 ) ; <S2SV_StartBug> if ( rc < 0 ) { <S2SV_EndBug> dev_err ( & intf -> dev , \"Couldn\\'t<S2SV_blank>send<S2SV_blank>data<S2SV_blank>format<S2SV_blank>(err=%d)\\\\n\" , rc ) ; return rc ; <S2SV_StartBug> } <S2SV_EndBug> rc = usb_control_msg ( interface_to_usbdev ( intf ) , usb_rcvctrlpipe ( interface_to_usbdev ( intf ) , 0 ) , GS_USB_BREQ_DEVICE_CONFIG , USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_INTERFACE , 1 , intf -> altsetting [ 0 ] . desc . bInterfaceNumber , <S2SV_StartBug> & dconf , <S2SV_EndBug> <S2SV_StartBug> sizeof ( dconf ) , <S2SV_EndBug> 1000 ) ; if ( rc < 0 ) { dev_err ( & intf -> dev , \"Couldn\\'t<S2SV_blank>get<S2SV_blank>device<S2SV_blank>config:<S2SV_blank>(err=%d)\\\\n\" , rc ) ; <S2SV_StartBug> return rc ; <S2SV_EndBug> } icount = dconf . icount + 1 ; dev_info ( & intf -> dev , \"Configuring<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>interfaces\\\\n\" , icount ) ; if ( icount > GS_MAX_INTF ) { dev_err ( & intf -> dev , \"Driver<S2SV_blank>cannot<S2SV_blank>handle<S2SV_blank>more<S2SV_blank>that<S2SV_blank>%d<S2SV_blank>CAN<S2SV_blank>interfaces\\\\n\" , GS_MAX_INTF ) ; <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> } dev = kzalloc ( sizeof ( * dev ) , GFP_KERNEL ) ; <S2SV_StartBug> if ( ! dev ) <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> init_usb_anchor ( & dev -> rx_submitted ) ; <S2SV_EndBug> atomic_set ( & dev -> active_channels , 0 ) ; usb_set_intfdata ( intf , dev ) ; dev -> udev = interface_to_usbdev ( intf ) ; for ( i = 0 ; i < icount ; i ++ ) { <S2SV_StartBug> dev -> canch [ i ] = gs_make_candev ( i , intf , & dconf ) ; <S2SV_EndBug> if ( IS_ERR_OR_NULL ( dev -> canch [ i ] ) ) { rc = PTR_ERR ( dev -> canch [ i ] ) ; icount = i ; for ( i = 0 ; i < icount ; i ++ ) gs_destroy_candev ( dev -> canch [ i ] ) ; usb_kill_anchored_urbs ( & dev -> rx_submitted ) ; <S2SV_StartBug> kfree ( dev ) ; <S2SV_EndBug> return rc ; } dev -> canch [ i ] -> parent = dev ; } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; struct gs_host_config * hconf <S2SV_ModEnd> ; struct gs_device_config <S2SV_ModStart> ; struct gs_device_config * dconf ; hconf = kmalloc ( sizeof ( * hconf ) , GFP_KERNEL ) ; if ( ! hconf ) return - ENOMEM ; hconf -> byte_order = 0x0000beef <S2SV_ModEnd> ; rc = <S2SV_ModStart> . bInterfaceNumber , <S2SV_ModEnd> hconf , sizeof <S2SV_ModStart> , sizeof ( * <S2SV_ModStart> 1000 ) ; kfree ( hconf ) ; <S2SV_ModStart> rc ; } dconf = kmalloc ( sizeof ( * dconf ) , GFP_KERNEL ) ; if ( ! dconf ) return - ENOMEM ; <S2SV_ModStart> . bInterfaceNumber , <S2SV_ModEnd> dconf , sizeof <S2SV_ModStart> , sizeof ( * <S2SV_ModStart> rc ) ; kfree ( dconf ) ; return rc ; } icount = dconf -> <S2SV_ModEnd> icount + 1 <S2SV_ModStart> GS_MAX_INTF ) ; kfree ( dconf ) ; <S2SV_ModStart> ! dev ) { kfree ( dconf ) ; <S2SV_ModStart> - ENOMEM ; } <S2SV_ModStart> , intf , <S2SV_ModEnd> dconf ) ; <S2SV_ModStart> ; kfree ( dconf ) ; kfree ( <S2SV_ModStart> dev ; } kfree ( dconf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 static int rose_parse_ccitt ( unsigned char * p , struct rose_facilities_struct * facilities , int len ) { unsigned char l , n = 0 ; char callsign [ 11 ] ; do { switch ( * p & 0xC0 ) { case 0x00 : <S2SV_StartBug> p += 2 ; <S2SV_EndBug> n += 2 ; len -= 2 ; break ; case 0x40 : <S2SV_StartBug> p += 3 ; <S2SV_EndBug> n += 3 ; len -= 3 ; break ; case 0x80 : <S2SV_StartBug> p += 4 ; <S2SV_EndBug> n += 4 ; len -= 4 ; break ; case 0xC0 : <S2SV_StartBug> l = p [ 1 ] ; <S2SV_EndBug> if ( l < 10 || l > 20 ) return - 1 ; if ( * p == FAC_CCITT_DEST_NSAP ) { memcpy ( & facilities -> source_addr , p + 7 , ROSE_ADDR_LEN ) ; memcpy ( callsign , p + 12 , l - 10 ) ; callsign [ l - 10 ] = '\\\\0' ; asc2ax ( & facilities -> source_call , callsign ) ; } if ( * p == FAC_CCITT_SRC_NSAP ) { memcpy ( & facilities -> dest_addr , p + 7 , ROSE_ADDR_LEN ) ; memcpy ( callsign , p + 12 , l - 10 ) ; callsign [ l - 10 ] = '\\\\0' ; asc2ax ( & facilities -> dest_call , callsign ) ; } p += l + 2 ; n += l + 2 ; len -= l + 2 ; break ; } } while ( * p != 0x00 && len > 0 ) ; return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 0x00 : if ( len < 2 ) return - 1 ; <S2SV_ModStart> case 0x40 : if ( len < 3 ) return - 1 ; <S2SV_ModStart> case 0x80 : if ( len < 4 ) return - 1 ; <S2SV_ModStart> case 0xC0 : if ( len < 2 ) return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13233\n\n```\nCWE-362 unsigned long insn_get_seg_base ( struct pt_regs * regs , int seg_reg_idx ) { <S2SV_StartBug> struct desc_struct * desc ; <S2SV_EndBug> short sel ; sel = get_segment_selector ( regs , seg_reg_idx ) ; if ( sel < 0 ) return - 1L ; if ( v8086_mode ( regs ) ) return ( unsigned long ) ( sel << 4 ) ; if ( user_64bit_mode ( regs ) ) { unsigned long base ; if ( seg_reg_idx == INAT_SEG_REG_FS ) rdmsrl ( MSR_FS_BASE , base ) ; else if ( seg_reg_idx == INAT_SEG_REG_GS ) rdmsrl ( MSR_KERNEL_GS_BASE , base ) ; else base = 0 ; return base ; } if ( ! sel ) return - 1L ; <S2SV_StartBug> desc = get_desc ( sel ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! desc ) <S2SV_EndBug> return - 1L ; <S2SV_StartBug> return get_desc_base ( desc ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct desc_struct <S2SV_ModEnd> desc ; short <S2SV_ModStart> - 1L ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! get_desc ( & desc , sel ) <S2SV_ModEnd> ) return - <S2SV_ModStart> return get_desc_base ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-863(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20685\n\n```\nCWE-863 void sink ( int argc , char * * argv ) { static BUF buffer ; struct stat stb ; enum { YES , NO , DISPLAYED } wrerr ; BUF * bp ; off_t i ; size_t j , count ; int amt , exists , first , ofd ; mode_t mode , omode , mask ; off_t size , statbytes ; unsigned long long ull ; int setimes , targisdir , wrerrno = 0 ; char ch , * cp , * np , * targ , * why , * vect [ 1 ] , buf [ 2048 ] , visbuf [ 2048 ] ; struct timeval tv [ 2 ] ; # define atime tv [ 0 ] # define mtime tv [ 1 ] # define SCREWUP ( str ) { why = str ; goto screwup ; } if ( TYPE_OVERFLOW ( time_t , 0 ) || TYPE_OVERFLOW ( off_t , 0 ) ) SCREWUP ( \"Unexpected<S2SV_blank>off_t/time_t<S2SV_blank>size\" ) ; setimes = targisdir = 0 ; mask = umask ( 0 ) ; if ( ! pflag ) ( void ) umask ( mask ) ; if ( argc != 1 ) { run_err ( \"ambiguous<S2SV_blank>target\" ) ; exit ( 1 ) ; } targ = * argv ; if ( targetshouldbedirectory ) verifydir ( targ ) ; ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; if ( stat ( targ , & stb ) == 0 && S_ISDIR ( stb . st_mode ) ) targisdir = 1 ; for ( first = 1 ; ; first = 0 ) { cp = buf ; if ( atomicio ( read , remin , cp , 1 ) != 1 ) return ; if ( * cp ++ == '\\\\n' ) SCREWUP ( \"unexpected<S2SV_blank><newline>\" ) ; do { if ( atomicio ( read , remin , & ch , sizeof ( ch ) ) != sizeof ( ch ) ) SCREWUP ( \"lost<S2SV_blank>connection\" ) ; * cp ++ = ch ; } while ( cp < & buf [ sizeof ( buf ) - 1 ] && ch != '\\\\n' ) ; * cp = 0 ; if ( verbose_mode ) fmprintf ( stderr , \"Sink:<S2SV_blank>%s\" , buf ) ; if ( buf [ 0 ] == '\\\\01' || buf [ 0 ] == '\\\\02' ) { if ( iamremote == 0 ) { ( void ) snmprintf ( visbuf , sizeof ( visbuf ) , NULL , \"%s\" , buf + 1 ) ; ( void ) atomicio ( vwrite , STDERR_FILENO , visbuf , strlen ( visbuf ) ) ; } if ( buf [ 0 ] == '\\\\02' ) exit ( 1 ) ; ++ errs ; continue ; } if ( buf [ 0 ] == 'E' ) { ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; return ; } if ( ch == '\\\\n' ) * -- cp = 0 ; cp = buf ; if ( * cp == 'T' ) { setimes ++ ; cp ++ ; if ( ! isdigit ( ( unsigned char ) * cp ) ) SCREWUP ( \"mtime.sec<S2SV_blank>not<S2SV_blank>present\" ) ; ull = strtoull ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"mtime.sec<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( TYPE_OVERFLOW ( time_t , ull ) ) setimes = 0 ; mtime . tv_sec = ull ; mtime . tv_usec = strtol ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' || mtime . tv_usec < 0 || mtime . tv_usec > 999999 ) SCREWUP ( \"mtime.usec<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( ! isdigit ( ( unsigned char ) * cp ) ) SCREWUP ( \"atime.sec<S2SV_blank>not<S2SV_blank>present\" ) ; ull = strtoull ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"atime.sec<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( TYPE_OVERFLOW ( time_t , ull ) ) setimes = 0 ; atime . tv_sec = ull ; atime . tv_usec = strtol ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '\\\\0' || atime . tv_usec < 0 || atime . tv_usec > 999999 ) SCREWUP ( \"atime.usec<S2SV_blank>not<S2SV_blank>delimited\" ) ; ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; continue ; } if ( * cp != 'C' && * cp != 'D' ) { if ( first ) { run_err ( \"%s\" , cp ) ; exit ( 1 ) ; } SCREWUP ( \"expected<S2SV_blank>control<S2SV_blank>record\" ) ; } mode = 0 ; for ( ++ cp ; cp < buf + 5 ; cp ++ ) { if ( * cp < '0' || * cp > '7' ) SCREWUP ( \"bad<S2SV_blank>mode\" ) ; mode = ( mode << 3 ) | ( * cp - '0' ) ; } if ( ! pflag ) mode &= ~ mask ; if ( * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"mode<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( ! isdigit ( ( unsigned char ) * cp ) ) SCREWUP ( \"size<S2SV_blank>not<S2SV_blank>present\" ) ; ull = strtoull ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"size<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( TYPE_OVERFLOW ( off_t , ull ) ) SCREWUP ( \"size<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\" ) ; size = ( off_t ) ull ; <S2SV_StartBug> if ( ( strchr ( cp , '/' ) != NULL ) || ( strcmp ( cp , \"..\" ) == 0 ) ) { <S2SV_EndBug> run_err ( \"error:<S2SV_blank>unexpected<S2SV_blank>filename:<S2SV_blank>%s\" , cp ) ; exit ( 1 ) ; } if ( targisdir ) { static char * namebuf ; static size_t cursize ; size_t need ; need = strlen ( targ ) + strlen ( cp ) + 250 ; if ( need > cursize ) { free ( namebuf ) ; namebuf = xmalloc ( need ) ; cursize = need ; } ( void ) snprintf ( namebuf , need , \"%s%s%s\" , targ , strcmp ( targ , \"/\" ) ? \"/\" : \"\" , cp ) ; np = namebuf ; } else np = targ ; curfile = cp ; exists = stat ( np , & stb ) == 0 ; if ( buf [ 0 ] == 'D' ) { int mod_flag = pflag ; if ( ! iamrecursive ) SCREWUP ( \"received<S2SV_blank>directory<S2SV_blank>without<S2SV_blank>-r\" ) ; if ( exists ) { if ( ! S_ISDIR ( stb . st_mode ) ) { errno = ENOTDIR ; goto bad ; } if ( pflag ) ( void ) chmod ( np , mode ) ; } else { mod_flag = 1 ; if ( mkdir ( np , mode | S_IRWXU ) < 0 ) goto bad ; } vect [ 0 ] = xstrdup ( np ) ; sink ( 1 , vect ) ; if ( setimes ) { setimes = 0 ; if ( utimes ( vect [ 0 ] , tv ) < 0 ) run_err ( \"%s:<S2SV_blank>set<S2SV_blank>times:<S2SV_blank>%s\" , vect [ 0 ] , strerror ( errno ) ) ; } if ( mod_flag ) ( void ) chmod ( vect [ 0 ] , mode ) ; free ( vect [ 0 ] ) ; continue ; } omode = mode ; mode |= S_IWUSR ; if ( ( ofd = open ( np , O_WRONLY | O_CREAT , mode ) ) < 0 ) { bad : run_err ( \"%s:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; continue ; } ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; if ( ( bp = allocbuf ( & buffer , ofd , COPY_BUFLEN ) ) == NULL ) { ( void ) close ( ofd ) ; continue ; } cp = bp -> buf ; wrerr = NO ; statbytes = 0 ; if ( showprogress ) start_progress_meter ( curfile , size , & statbytes ) ; set_nonblock ( remin ) ; for ( count = i = 0 ; i < size ; i += bp -> cnt ) { amt = bp -> cnt ; if ( i + amt > size ) amt = size - i ; count += amt ; do { j = atomicio6 ( read , remin , cp , amt , scpio , & statbytes ) ; if ( j == 0 ) { run_err ( \"%s\" , j != EPIPE ? strerror ( errno ) : \"dropped<S2SV_blank>connection\" ) ; exit ( 1 ) ; } amt -= j ; cp += j ; } while ( amt > 0 ) ; if ( count == bp -> cnt ) { if ( wrerr == NO ) { if ( atomicio ( vwrite , ofd , bp -> buf , count ) != count ) { wrerr = YES ; wrerrno = errno ; } } count = 0 ; cp = bp -> buf ; } } unset_nonblock ( remin ) ; if ( count != 0 && wrerr == NO && atomicio ( vwrite , ofd , bp -> buf , count ) != count ) { wrerr = YES ; wrerrno = errno ; } if ( wrerr == NO && ( ! exists || S_ISREG ( stb . st_mode ) ) && ftruncate ( ofd , size ) != 0 ) { run_err ( \"%s:<S2SV_blank>truncate:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = DISPLAYED ; } if ( pflag ) { if ( exists || omode != mode ) # ifdef HAVE_FCHMOD if ( fchmod ( ofd , omode ) ) { # else if ( chmod ( np , omode ) ) { # endif run_err ( \"%s:<S2SV_blank>set<S2SV_blank>mode:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = DISPLAYED ; } } else { if ( ! exists && omode != mode ) # ifdef HAVE_FCHMOD if ( fchmod ( ofd , omode & ~ mask ) ) { # else if ( chmod ( np , omode & ~ mask ) ) { # endif run_err ( \"%s:<S2SV_blank>set<S2SV_blank>mode:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = DISPLAYED ; } } if ( close ( ofd ) == - 1 ) { wrerr = YES ; wrerrno = errno ; } ( void ) response ( ) ; if ( showprogress ) stop_progress_meter ( ) ; if ( setimes && wrerr == NO ) { setimes = 0 ; if ( utimes ( np , tv ) < 0 ) { run_err ( \"%s:<S2SV_blank>set<S2SV_blank>times:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = DISPLAYED ; } } switch ( wrerr ) { case YES : run_err ( \"%s:<S2SV_blank>%s\" , np , strerror ( wrerrno ) ) ; break ; case NO : ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; break ; case DISPLAYED : break ; } } screwup : run_err ( \"protocol<S2SV_blank>error:<S2SV_blank>%s\" , why ) ; exit ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( * cp == '\\\\0' || <S2SV_ModEnd> strchr ( cp <S2SV_ModStart> ) != NULL || <S2SV_ModEnd> strcmp ( cp <S2SV_ModStart> ( cp , \".\" ) == 0 || strcmp ( cp , <S2SV_ModStart> ) == 0 <S2SV_ModEnd> ) { run_err\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2669\n\n```\nCWE-20 int main ( void ) { int fd , len , sock_opt ; int error ; struct cn_msg * message ; struct pollfd pfd ; struct nlmsghdr * incoming_msg ; struct cn_msg * incoming_cn_msg ; struct hv_kvp_msg * hv_msg ; char * p ; char * key_value ; char * key_name ; daemon ( 1 , 0 ) ; openlog ( \"KVP\" , 0 , LOG_USER ) ; syslog ( LOG_INFO , \"KVP<S2SV_blank>starting;<S2SV_blank>pid<S2SV_blank>is:%d\" , getpid ( ) ) ; kvp_get_os_info ( ) ; if ( kvp_file_init ( ) ) { syslog ( LOG_ERR , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>the<S2SV_blank>pools\" ) ; exit ( - 1 ) ; } fd = socket ( AF_NETLINK , SOCK_DGRAM , NETLINK_CONNECTOR ) ; if ( fd < 0 ) { syslog ( LOG_ERR , \"netlink<S2SV_blank>socket<S2SV_blank>creation<S2SV_blank>failed;<S2SV_blank>error:%d\" , fd ) ; exit ( - 1 ) ; } addr . nl_family = AF_NETLINK ; addr . nl_pad = 0 ; addr . nl_pid = 0 ; addr . nl_groups = CN_KVP_IDX ; error = bind ( fd , ( struct sockaddr * ) & addr , sizeof ( addr ) ) ; if ( error < 0 ) { syslog ( LOG_ERR , \"bind<S2SV_blank>failed;<S2SV_blank>error:%d\" , error ) ; close ( fd ) ; exit ( - 1 ) ; } sock_opt = addr . nl_groups ; setsockopt ( fd , 270 , 1 , & sock_opt , sizeof ( sock_opt ) ) ; message = ( struct cn_msg * ) kvp_send_buffer ; message -> id . idx = CN_KVP_IDX ; message -> id . val = CN_KVP_VAL ; hv_msg = ( struct hv_kvp_msg * ) message -> data ; hv_msg -> kvp_hdr . operation = KVP_OP_REGISTER ; message -> ack = 0 ; message -> len = sizeof ( struct hv_kvp_msg ) ; len = netlink_send ( fd , message ) ; if ( len < 0 ) { syslog ( LOG_ERR , \"netlink_send<S2SV_blank>failed;<S2SV_blank>error:%d\" , len ) ; close ( fd ) ; exit ( - 1 ) ; } pfd . fd = fd ; while ( 1 ) { <S2SV_StartBug> pfd . events = POLLIN ; <S2SV_EndBug> pfd . revents = 0 ; poll ( & pfd , 1 , - 1 ) ; <S2SV_StartBug> len = recv ( fd , kvp_recv_buffer , sizeof ( kvp_recv_buffer ) , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( len < 0 ) { <S2SV_EndBug> <S2SV_StartBug> syslog ( LOG_ERR , \"recv<S2SV_blank>failed;<S2SV_blank>error:%d\" , len ) ; <S2SV_EndBug> close ( fd ) ; return - 1 ; } incoming_msg = ( struct nlmsghdr * ) kvp_recv_buffer ; incoming_cn_msg = ( struct cn_msg * ) NLMSG_DATA ( incoming_msg ) ; hv_msg = ( struct hv_kvp_msg * ) incoming_cn_msg -> data ; switch ( hv_msg -> kvp_hdr . operation ) { case KVP_OP_REGISTER : p = ( char * ) hv_msg -> body . kvp_register . version ; lic_version = malloc ( strlen ( p ) + 1 ) ; if ( lic_version ) { strcpy ( lic_version , p ) ; syslog ( LOG_INFO , \"KVP<S2SV_blank>LIC<S2SV_blank>Version:<S2SV_blank>%s\" , lic_version ) ; } else { syslog ( LOG_ERR , \"malloc<S2SV_blank>failed\" ) ; } continue ; case KVP_OP_SET : if ( kvp_key_add_or_modify ( hv_msg -> kvp_hdr . pool , hv_msg -> body . kvp_set . data . key , hv_msg -> body . kvp_set . data . key_size , hv_msg -> body . kvp_set . data . value , hv_msg -> body . kvp_set . data . value_size ) ) strcpy ( hv_msg -> body . kvp_set . data . key , \"\" ) ; break ; case KVP_OP_GET : if ( kvp_get_value ( hv_msg -> kvp_hdr . pool , hv_msg -> body . kvp_set . data . key , hv_msg -> body . kvp_set . data . key_size , hv_msg -> body . kvp_set . data . value , hv_msg -> body . kvp_set . data . value_size ) ) strcpy ( hv_msg -> body . kvp_set . data . key , \"\" ) ; break ; case KVP_OP_DELETE : if ( kvp_key_delete ( hv_msg -> kvp_hdr . pool , hv_msg -> body . kvp_delete . key , hv_msg -> body . kvp_delete . key_size ) ) strcpy ( hv_msg -> body . kvp_delete . key , \"\" ) ; break ; default : break ; } if ( hv_msg -> kvp_hdr . operation != KVP_OP_ENUMERATE ) goto kvp_done ; if ( hv_msg -> kvp_hdr . pool != KVP_POOL_AUTO ) { kvp_pool_enumerate ( hv_msg -> kvp_hdr . pool , hv_msg -> body . kvp_enum_data . index , hv_msg -> body . kvp_enum_data . data . key , HV_KVP_EXCHANGE_MAX_KEY_SIZE , hv_msg -> body . kvp_enum_data . data . value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; goto kvp_done ; } hv_msg = ( struct hv_kvp_msg * ) incoming_cn_msg -> data ; key_name = ( char * ) hv_msg -> body . kvp_enum_data . data . key ; key_value = ( char * ) hv_msg -> body . kvp_enum_data . data . value ; switch ( hv_msg -> body . kvp_enum_data . index ) { case FullyQualifiedDomainName : kvp_get_domain_name ( key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"FullyQualifiedDomainName\" ) ; break ; case IntegrationServicesVersion : strcpy ( key_name , \"IntegrationServicesVersion\" ) ; strcpy ( key_value , lic_version ) ; break ; case NetworkAddressIPv4 : kvp_get_ip_address ( AF_INET , key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"NetworkAddressIPv4\" ) ; break ; case NetworkAddressIPv6 : kvp_get_ip_address ( AF_INET6 , key_value , HV_KVP_EXCHANGE_MAX_VALUE_SIZE ) ; strcpy ( key_name , \"NetworkAddressIPv6\" ) ; break ; case OSBuildNumber : strcpy ( key_value , os_build ) ; strcpy ( key_name , \"OSBuildNumber\" ) ; break ; case OSName : strcpy ( key_value , os_name ) ; strcpy ( key_name , \"OSName\" ) ; break ; case OSMajorVersion : strcpy ( key_value , os_major ) ; strcpy ( key_name , \"OSMajorVersion\" ) ; break ; case OSMinorVersion : strcpy ( key_value , os_minor ) ; strcpy ( key_name , \"OSMinorVersion\" ) ; break ; case OSVersion : strcpy ( key_value , os_build ) ; strcpy ( key_name , \"OSVersion\" ) ; break ; case ProcessorArchitecture : strcpy ( key_value , processor_arch ) ; strcpy ( key_name , \"ProcessorArchitecture\" ) ; break ; default : strcpy ( key_value , \"Unknown<S2SV_blank>Key\" ) ; strcpy ( key_name , \"\" ) ; break ; } kvp_done : incoming_cn_msg -> id . idx = CN_KVP_IDX ; incoming_cn_msg -> id . val = CN_KVP_VAL ; incoming_cn_msg -> ack = 0 ; incoming_cn_msg -> len = sizeof ( struct hv_kvp_msg ) ; len = netlink_send ( fd , incoming_cn_msg ) ; if ( len < 0 ) { syslog ( LOG_ERR , \"net_link<S2SV_blank>send<S2SV_blank>failed;<S2SV_blank>error:%d\" , len ) ; exit ( - 1 ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) { struct sockaddr * addr_p = ( struct sockaddr * ) & addr ; socklen_t addr_l = sizeof ( addr ) ; <S2SV_ModStart> ; len = recvfrom <S2SV_ModEnd> ( fd , <S2SV_ModStart> ) , 0 , addr_p , & addr_l <S2SV_ModStart> len < 0 || addr . nl_pid <S2SV_ModStart> ( LOG_ERR , \"recvfrom<S2SV_blank>failed;<S2SV_blank>pid:%u<S2SV_blank>error:%d<S2SV_blank>%s\" , addr . nl_pid , errno , strerror ( errno ) <S2SV_ModEnd> ) ; close\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * purgekeys_2_svc ( purgekeys_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg , * funcname ; <S2SV_StartBug> gss_buffer_desc client_name , service_name ; <S2SV_EndBug> OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; funcname = \"kadm5_purgekeys\" ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( ! cmp_gss_krb5_name ( handle , rqst2name ( rqstp ) , arg -> princ ) && ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_MODIFY , arg -> princ , NULL ) ) ) { ret . code = KADM5_AUTH_MODIFY ; log_unauth ( funcname , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_purgekeys ( ( void * ) handle , arg -> princ , arg -> keepkvno ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( funcname , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_StartBug> exit_func : <S2SV_EndBug> free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : <S2SV_ModStart> service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4002\n\n```\nCWE-119 void oz_usb_rx ( struct oz_pd * pd , struct oz_elt * elt ) { struct oz_usb_hdr * usb_hdr = ( struct oz_usb_hdr * ) ( elt + 1 ) ; struct oz_usb_ctx * usb_ctx ; spin_lock_bh ( & pd -> app_lock [ OZ_APPID_USB ] ) ; usb_ctx = ( struct oz_usb_ctx * ) pd -> app_ctx [ OZ_APPID_USB ] ; if ( usb_ctx ) oz_usb_get ( usb_ctx ) ; spin_unlock_bh ( & pd -> app_lock [ OZ_APPID_USB ] ) ; if ( usb_ctx == NULL ) return ; if ( usb_ctx -> stopped ) goto done ; if ( usb_hdr -> elt_seq_num != 0 ) { if ( ( ( usb_ctx -> rx_seq_num - usb_hdr -> elt_seq_num ) & 0x80 ) == 0 ) goto done ; } usb_ctx -> rx_seq_num = usb_hdr -> elt_seq_num ; switch ( usb_hdr -> type ) { case OZ_GET_DESC_RSP : { struct oz_get_desc_rsp * body = ( struct oz_get_desc_rsp * ) usb_hdr ; <S2SV_StartBug> int data_len = elt -> length - <S2SV_EndBug> <S2SV_StartBug> sizeof ( struct oz_get_desc_rsp ) + 1 ; <S2SV_EndBug> u16 offs = le16_to_cpu ( get_unaligned ( & body -> offset ) ) ; u16 total_size = le16_to_cpu ( get_unaligned ( & body -> total_size ) ) ; oz_dbg ( ON , \"USB_REQ_GET_DESCRIPTOR<S2SV_blank>-<S2SV_blank>cnf\\\\n\" ) ; oz_hcd_get_desc_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , body -> data , data_len , offs , total_size ) ; } break ; case OZ_SET_CONFIG_RSP : { struct oz_set_config_rsp * body = ( struct oz_set_config_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , NULL , 0 ) ; } break ; case OZ_SET_INTERFACE_RSP : { struct oz_set_interface_rsp * body = ( struct oz_set_interface_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , NULL , 0 ) ; } break ; case OZ_VENDOR_CLASS_RSP : { struct oz_vendor_class_rsp * body = ( struct oz_vendor_class_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , body -> data , elt -> length - sizeof ( struct oz_vendor_class_rsp ) + 1 ) ; } break ; case OZ_USB_ENDPOINT_DATA : oz_usb_handle_ep_data ( usb_ctx , usb_hdr , elt -> length ) ; break ; } done : oz_usb_put ( usb_ctx ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) usb_hdr ; u16 offs , total_size ; u8 data_len ; if ( elt -> length < sizeof ( struct oz_get_desc_rsp ) - 1 ) break ; <S2SV_ModEnd> data_len = elt <S2SV_ModStart> -> length - ( <S2SV_ModStart> ( struct oz_get_desc_rsp ) - 1 ) ; offs = le16_to_cpu ( get_unaligned ( & body -> offset ) ) ; total_size = le16_to_cpu ( get_unaligned ( & body -> total_size ) ) ; oz_dbg ( ON , \"USB_REQ_GET_DESCRIPTOR<S2SV_blank>-<S2SV_blank>cnf\\\\n\" ) ; oz_hcd_get_desc_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , body -> data , data_len , offs , total_size ) ; } break ; case OZ_SET_CONFIG_RSP : { struct oz_set_config_rsp * body = ( struct oz_set_config_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , NULL , 0 ) ; } break ; case OZ_SET_INTERFACE_RSP : { struct oz_set_interface_rsp * body = ( struct oz_set_interface_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , NULL , 0 ) ; } break ; case OZ_VENDOR_CLASS_RSP : { struct oz_vendor_class_rsp * body = ( struct oz_vendor_class_rsp * ) usb_hdr ; oz_hcd_control_cnf ( usb_ctx -> hport , body -> req_id , body -> rcode , body -> data , elt -> length - sizeof ( struct oz_vendor_class_rsp <S2SV_ModStart> ) + 1 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static struct nfs4_opendata * nfs4_opendata_alloc ( struct path * path , <S2SV_StartBug> struct nfs4_state_owner * sp , int flags , <S2SV_EndBug> const struct iattr * attrs ) { struct dentry * parent = dget_parent ( path -> dentry ) ; struct inode * dir = parent -> d_inode ; struct nfs_server * server = NFS_SERVER ( dir ) ; struct nfs4_opendata * p ; p = kzalloc ( sizeof ( * p ) , GFP_KERNEL ) ; if ( p == NULL ) goto err ; p -> o_arg . seqid = nfs_alloc_seqid ( & sp -> so_seqid ) ; if ( p -> o_arg . seqid == NULL ) goto err_free ; p -> path . mnt = mntget ( path -> mnt ) ; p -> path . dentry = dget ( path -> dentry ) ; p -> dir = parent ; p -> owner = sp ; atomic_inc ( & sp -> so_count ) ; p -> o_arg . fh = NFS_FH ( dir ) ; <S2SV_StartBug> p -> o_arg . open_flags = flags , <S2SV_EndBug> p -> o_arg . clientid = server -> nfs_client -> cl_clientid ; p -> o_arg . id = sp -> so_owner_id . id ; p -> o_arg . name = & p -> path . dentry -> d_name ; p -> o_arg . server = server ; p -> o_arg . bitmask = server -> attr_bitmask ; p -> o_arg . claim = NFS4_OPEN_CLAIM_NULL ; if ( flags & O_EXCL ) { u32 * s = ( u32 * ) p -> o_arg . u . verifier . data ; s [ 0 ] = jiffies ; s [ 1 ] = current -> pid ; } else if ( flags & O_CREAT ) { p -> o_arg . u . attrs = & p -> attrs ; memcpy ( & p -> attrs , attrs , sizeof ( p -> attrs ) ) ; } p -> c_arg . fh = & p -> o_res . fh ; p -> c_arg . stateid = & p -> o_res . stateid ; p -> c_arg . seqid = p -> o_arg . seqid ; nfs4_init_opendata_res ( p ) ; kref_init ( & p -> kref ) ; return p ; err_free : kfree ( p ) ; err : dput ( parent ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nfs4_state_owner * sp , fmode_t fmode <S2SV_ModStart> open_flags = flags ; p -> o_arg . fmode = fmode & ( FMODE_READ | FMODE_WRITE ) ; <S2SV_ModEnd> p -> o_arg\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15115\n\n```\nCWE-416 int sctp_do_peeloff ( struct sock * sk , sctp_assoc_t id , struct socket * * sockp ) { struct sctp_association * asoc = sctp_id2assoc ( sk , id ) ; struct sctp_sock * sp = sctp_sk ( sk ) ; struct socket * sock ; <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> if ( ! asoc ) return - EINVAL ; if ( waitqueue_active ( & asoc -> wait ) ) return - EBUSY ; if ( ! sctp_style ( sk , UDP ) ) return - EINVAL ; err = sock_create ( sk -> sk_family , SOCK_SEQPACKET , IPPROTO_SCTP , & sock ) ; if ( err < 0 ) return err ; sctp_copy_sock ( sock -> sk , sk , asoc ) ; sp -> pf -> to_sk_daddr ( & asoc -> peer . primary_addr , sk ) ; sctp_sock_migrate ( sk , sock -> sk , asoc , SCTP_SOCKET_UDP_HIGH_BANDWIDTH ) ; * sockp = sock ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err = 0 ; if ( ! net_eq ( current -> nsproxy -> net_ns , sock_net ( sk ) ) ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4131\n\n```\nCWE-189 static ssize_t __nfs4_get_acl_uncached ( struct inode * inode , void * buf , size_t buflen ) { <S2SV_StartBug> struct page * pages [ NFS4ACL_MAXPAGES ] ; <S2SV_EndBug> struct nfs_getaclargs args = { . fh = NFS_FH ( inode ) , . acl_pages = pages , . acl_len = buflen , } ; struct nfs_getaclres res = { . acl_len = buflen , } ; void * resp_buf ; struct rpc_message msg = { . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_GETACL ] , . rpc_argp = & args , . rpc_resp = & res , } ; <S2SV_StartBug> struct page * localpage = NULL ; <S2SV_EndBug> int ret ; if ( buflen < PAGE_SIZE ) { localpage = alloc_page ( GFP_KERNEL ) ; resp_buf = page_address ( localpage ) ; if ( localpage == NULL ) <S2SV_StartBug> return - ENOMEM ; <S2SV_EndBug> args . acl_pages [ 0 ] = localpage ; args . acl_pgbase = 0 ; args . acl_len = PAGE_SIZE ; } else { resp_buf = buf ; buf_to_pages ( buf , buflen , args . acl_pages , & args . acl_pgbase ) ; } ret = nfs4_call_sync ( NFS_SERVER ( inode ) -> client , NFS_SERVER ( inode ) , & msg , & args . seq_args , & res . seq_res , 0 ) ; if ( ret ) goto out_free ; <S2SV_StartBug> if ( res . acl_len > args . acl_len ) <S2SV_EndBug> <S2SV_StartBug> nfs4_write_cached_acl ( inode , NULL , res . acl_len ) ; <S2SV_EndBug> else <S2SV_StartBug> nfs4_write_cached_acl ( inode , resp_buf , res . acl_len ) ; <S2SV_EndBug> if ( buf ) { ret = - ERANGE ; <S2SV_StartBug> if ( res . acl_len > buflen ) <S2SV_EndBug> goto out_free ; <S2SV_StartBug> if ( localpage ) <S2SV_EndBug> <S2SV_StartBug> memcpy ( buf , resp_buf , res . acl_len ) ; <S2SV_EndBug> } ret = res . acl_len ; out_free : <S2SV_StartBug> if ( localpage ) <S2SV_EndBug> <S2SV_StartBug> __free_page ( localpage ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ NFS4ACL_MAXPAGES ] = { NULL , } <S2SV_ModStart> , } ; int ret = - ENOMEM , npages , i , acl_len = 0 ; npages = ( buflen + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; if ( npages == 0 ) npages = 1 ; for ( i = 0 ; i < npages ; i ++ ) { pages [ i ] = alloc_page ( GFP_KERNEL ) ; if ( ! pages [ i ] ) goto out_free ; } if ( npages > 1 ) { args . acl_scratch = alloc_page ( GFP_KERNEL ) ; if ( ! args . acl_scratch ) goto out_free ; } args . acl_len = npages * PAGE_SIZE ; args . acl_pgbase = 0 ; if ( buf <S2SV_ModEnd> == NULL ) <S2SV_ModStart> == NULL ) res . acl_flags |= NFS4_ACL_LEN_REQUEST ; resp_buf = page_address ( pages [ 0 ] ) ; dprintk ( \"%s<S2SV_blank><S2SV_blank>buf<S2SV_blank>%p<S2SV_blank>buflen<S2SV_blank>%ld<S2SV_blank>npages<S2SV_blank>%d<S2SV_blank>args.acl_len<S2SV_blank>%ld\\\\n\" , __func__ , buf , buflen , npages , args . acl_len ) ; <S2SV_ModEnd> ret = nfs4_call_sync <S2SV_ModStart> goto out_free ; acl_len = res . acl_len - res . acl_data_offset ; if ( <S2SV_ModEnd> acl_len > args <S2SV_ModStart> , NULL , <S2SV_ModEnd> acl_len ) ; <S2SV_ModStart> inode , resp_buf + res . acl_data_offset , <S2SV_ModEnd> acl_len ) ; <S2SV_ModStart> ; if ( <S2SV_ModEnd> acl_len > buflen <S2SV_ModStart> goto out_free ; _copy_from_pages <S2SV_ModEnd> ( buf , <S2SV_ModStart> ( buf , pages , res . acl_data_offset , res . acl_len ) ; } ret = <S2SV_ModEnd> acl_len ; out_free <S2SV_ModStart> ; out_free : for ( i = 0 ; i < npages ; i ++ ) if ( pages [ i ] <S2SV_ModEnd> ) __free_page ( <S2SV_ModStart> ) __free_page ( pages [ i ] ) ; if ( args . acl_scratch ) __free_page ( args . acl_scratch <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010295\n\n```\nCWE-119 static TEE_Result tee_svc_copy_param ( struct tee_ta_session * sess , struct tee_ta_session * called_sess , struct utee_params * callee_params , struct tee_ta_param * param , void * tmp_buf_va [ TEE_NUM_PARAMS ] , struct mobj * * mobj_tmp ) { size_t n ; TEE_Result res ; size_t req_mem = 0 ; size_t s ; uint8_t * dst = 0 ; bool ta_private_memref [ TEE_NUM_PARAMS ] ; struct user_ta_ctx * utc = to_user_ta_ctx ( sess -> ctx ) ; void * va ; size_t dst_offs ; if ( ! callee_params ) { memset ( param , 0 , sizeof ( * param ) ) ; } else { res = tee_mmu_check_access_rights ( utc , TEE_MEMORY_ACCESS_READ | TEE_MEMORY_ACCESS_ANY_OWNER , ( uaddr_t ) callee_params , sizeof ( struct utee_params ) ) ; if ( res != TEE_SUCCESS ) return res ; <S2SV_StartBug> utee_param_to_param ( param , callee_params ) ; <S2SV_EndBug> } if ( called_sess && is_pseudo_ta_ctx ( called_sess -> ctx ) ) { return TEE_SUCCESS ; } for ( n = 0 ; n < TEE_NUM_PARAMS ; n ++ ) { ta_private_memref [ n ] = false ; switch ( TEE_PARAM_TYPE_GET ( param -> types , n ) ) { case TEE_PARAM_TYPE_MEMREF_INPUT : case TEE_PARAM_TYPE_MEMREF_OUTPUT : case TEE_PARAM_TYPE_MEMREF_INOUT : va = ( void * ) param -> u [ n ] . mem . offs ; s = param -> u [ n ] . mem . size ; if ( ! va ) { if ( s ) return TEE_ERROR_BAD_PARAMETERS ; break ; } if ( tee_mmu_is_vbuf_inside_ta_private ( utc , va , s ) ) { s = ROUNDUP ( s , sizeof ( uint32_t ) ) ; if ( ADD_OVERFLOW ( req_mem , s , & req_mem ) ) return TEE_ERROR_BAD_PARAMETERS ; ta_private_memref [ n ] = true ; break ; } res = tee_mmu_vbuf_to_mobj_offs ( utc , va , s , & param -> u [ n ] . mem . mobj , & param -> u [ n ] . mem . offs ) ; if ( res != TEE_SUCCESS ) return res ; break ; default : break ; } } if ( req_mem == 0 ) return TEE_SUCCESS ; res = alloc_temp_sec_mem ( req_mem , mobj_tmp , & dst ) ; if ( res != TEE_SUCCESS ) return res ; dst_offs = 0 ; for ( n = 0 ; n < TEE_NUM_PARAMS ; n ++ ) { if ( ! ta_private_memref [ n ] ) continue ; s = ROUNDUP ( param -> u [ n ] . mem . size , sizeof ( uint32_t ) ) ; switch ( TEE_PARAM_TYPE_GET ( param -> types , n ) ) { case TEE_PARAM_TYPE_MEMREF_INPUT : case TEE_PARAM_TYPE_MEMREF_INOUT : va = ( void * ) param -> u [ n ] . mem . offs ; if ( va ) { res = tee_svc_copy_from_user ( dst , va , param -> u [ n ] . mem . size ) ; if ( res != TEE_SUCCESS ) return res ; param -> u [ n ] . mem . offs = dst_offs ; param -> u [ n ] . mem . mobj = * mobj_tmp ; tmp_buf_va [ n ] = dst ; dst += s ; dst_offs += s ; } break ; case TEE_PARAM_TYPE_MEMREF_OUTPUT : va = ( void * ) param -> u [ n ] . mem . offs ; if ( va ) { param -> u [ n ] . mem . offs = dst_offs ; param -> u [ n ] . mem . mobj = * mobj_tmp ; tmp_buf_va [ n ] = dst ; dst += s ; dst_offs += s ; } break ; default : continue ; } } return TEE_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return res ; res = utee_param_to_param ( utc , <S2SV_ModEnd> param , callee_params <S2SV_ModStart> , callee_params ) ; if ( res != TEE_SUCCESS ) return res\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int cipso_v4_sock_getattr ( struct sock * sk , struct netlbl_lsm_secattr * secattr ) { <S2SV_StartBug> struct ip_options * opt ; <S2SV_EndBug> <S2SV_StartBug> opt = inet_sk ( sk ) -> opt ; <S2SV_EndBug> <S2SV_StartBug> if ( opt == NULL || opt -> cipso == 0 ) <S2SV_EndBug> return - ENOMSG ; <S2SV_StartBug> return cipso_v4_getattr ( opt -> __data + opt -> cipso - sizeof ( struct iphdr ) , <S2SV_EndBug> secattr ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct ip_options_rcu <S2SV_ModEnd> * opt ; <S2SV_ModStart> * opt ; int res = - ENOMSG ; rcu_read_lock ( ) ; opt = rcu_dereference ( <S2SV_ModEnd> inet_sk ( sk <S2SV_ModStart> sk ) -> inet_opt ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> if ( opt && opt -> opt . cipso ) res = <S2SV_ModEnd> cipso_v4_getattr ( opt <S2SV_ModStart> ( opt -> opt . <S2SV_ModStart> + opt -> opt . <S2SV_ModStart> secattr ) ; rcu_read_unlock ( ) ; return res ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadDIBImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { DIBInfo dib_info ; Image * image ; IndexPacket index ; ssize_t bit , y ; MagickBooleanType status ; MemoryInfo * pixel_info ; register IndexPacket * indexes ; register ssize_t x ; register PixelPacket * q ; register ssize_t i ; register unsigned char * p ; size_t bytes_per_line , length ; ssize_t count ; unsigned char * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & dib_info , 0 , sizeof ( dib_info ) ) ; dib_info . size = ReadBlobLSBLong ( image ) ; if ( dib_info . size != 40 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; dib_info . width = ( short ) ReadBlobLSBLong ( image ) ; dib_info . height = ( short ) ReadBlobLSBLong ( image ) ; dib_info . planes = ReadBlobLSBShort ( image ) ; dib_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; dib_info . compression = ReadBlobLSBLong ( image ) ; dib_info . image_size = ReadBlobLSBLong ( image ) ; dib_info . x_pixels = ReadBlobLSBLong ( image ) ; dib_info . y_pixels = ReadBlobLSBLong ( image ) ; dib_info . number_colors = ReadBlobLSBLong ( image ) ; dib_info . colors_important = ReadBlobLSBLong ( image ) ; if ( ( dib_info . compression == BI_BITFIELDS ) && ( ( dib_info . bits_per_pixel == 16 ) || ( dib_info . bits_per_pixel == 32 ) ) ) { dib_info . red_mask = ReadBlobLSBLong ( image ) ; dib_info . green_mask = ReadBlobLSBLong ( image ) ; dib_info . blue_mask = ReadBlobLSBLong ( image ) ; } image -> matte = dib_info . bits_per_pixel == 32 ? MagickTrue : MagickFalse ; image -> columns = ( size_t ) MagickAbsoluteValue ( dib_info . width ) ; image -> rows = ( size_t ) MagickAbsoluteValue ( dib_info . height ) ; image -> depth = 8 ; if ( ( dib_info . number_colors != 0 ) || ( dib_info . bits_per_pixel < 16 ) ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = dib_info . number_colors ; one = 1 ; if ( image -> colors == 0 ) image -> colors = one << dib_info . bits_per_pixel ; } if ( image_info -> size ) { RectangleInfo geometry ; MagickStatusType flags ; flags = ParseAbsoluteGeometry ( image_info -> size , & geometry ) ; if ( flags & WidthValue ) if ( ( geometry . width != 0 ) && ( geometry . width < image -> columns ) ) image -> columns = geometry . width ; if ( flags & HeightValue ) if ( ( geometry . height != 0 ) && ( geometry . height < image -> rows ) ) image -> rows = geometry . height ; } <S2SV_StartBug> if ( image -> storage_class == PseudoClass ) <S2SV_EndBug> { size_t length , packet_size ; unsigned char * dib_colormap ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; length = ( size_t ) image -> colors ; dib_colormap = ( unsigned char * ) AcquireQuantumMemory ( length , 4 * sizeof ( * dib_colormap ) ) ; if ( dib_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; packet_size = 4 ; count = ReadBlob ( image , packet_size * image -> colors , dib_colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; p = dib_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . blue = ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . red = ScaleCharToQuantum ( * p ++ ) ; if ( packet_size == 4 ) p ++ ; } dib_colormap = ( unsigned char * ) RelinquishMagickMemory ( dib_colormap ) ; } if ( dib_info . compression == BI_RLE4 ) dib_info . bits_per_pixel <<= 1 ; bytes_per_line = 4 * ( ( image -> columns * dib_info . bits_per_pixel + 31 ) / 32 ) ; length = bytes_per_line * image -> rows ; pixel_info = AcquireVirtualMemory ( ( size_t ) image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( dib_info . compression == BI_RGB ) || ( dib_info . compression == BI_BITFIELDS ) ) { count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) ( length ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } else { status = DecodeImage ( image , dib_info . compression ? MagickTrue : MagickFalse , pixels ) ; if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnableToRunlengthDecodeImage\" ) ; } image -> units = PixelsPerCentimeterResolution ; image -> x_resolution = ( double ) dib_info . x_pixels / 100.0 ; image -> y_resolution = ( double ) dib_info . y_pixels / 100.0 ; switch ( dib_info . bits_per_pixel ) { case 1 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( IndexPacket ) ( ( * p ) & ( 0x80 >> bit ) ? 0x01 : 0x00 ) ; SetPixelIndex ( indexes + x + bit , index ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( ssize_t ) ( image -> columns % 8 ) ; bit ++ ) { index = ( IndexPacket ) ( ( * p ) & ( 0x80 >> bit ) ? 0x01 : 0x00 ) ; SetPixelIndex ( indexes + x + bit , index ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image ) ; break ; } case 4 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0xf ) ; SetPixelIndex ( indexes + x , index ) ; index = ConstrainColormapIndex ( image , * p & 0xf ) ; SetPixelIndex ( indexes + x + 1 , index ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0xf ) ; SetPixelIndex ( indexes + x , index ) ; p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image ) ; break ; } case 8 : { if ( ( dib_info . compression == BI_RLE8 ) || ( dib_info . compression == BI_RLE4 ) ) bytes_per_line = image -> columns ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { index = ConstrainColormapIndex ( image , * p ) ; SetPixelIndex ( indexes + x , index ) ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image ) ; break ; } case 16 : { unsigned short word ; image -> storage_class = DirectClass ; if ( dib_info . compression == BI_RLE8 ) bytes_per_line = 2 * image -> columns ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { word = ( * p ++ ) ; word |= ( * p ++ << 8 ) ; if ( dib_info . red_mask == 0 ) { SetPixelRed ( q , ScaleCharToQuantum ( ScaleColor5to8 ( ( unsigned char ) ( ( word >> 10 ) & 0x1f ) ) ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( ScaleColor5to8 ( ( unsigned char ) ( ( word >> 5 ) & 0x1f ) ) ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( ScaleColor5to8 ( ( unsigned char ) ( word & 0x1f ) ) ) ) ; } else { SetPixelRed ( q , ScaleCharToQuantum ( ScaleColor5to8 ( ( unsigned char ) ( ( word >> 11 ) & 0x1f ) ) ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( ScaleColor6to8 ( ( unsigned char ) ( ( word >> 5 ) & 0x3f ) ) ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( ScaleColor5to8 ( ( unsigned char ) ( word & 0x1f ) ) ) ) ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 24 : case 32 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelRed ( q , ScaleCharToQuantum ( * p ++ ) ) ; if ( image -> matte != MagickFalse ) SetPixelOpacity ( q , ScaleCharToQuantum ( * p ++ ) ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , image -> rows - y - 1 , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } default : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; if ( dib_info . height < 0 ) { Image * flipped_image ; flipped_image = FlipImage ( image , exception ) ; if ( flipped_image != ( Image * ) NULL ) { DuplicateBlob ( flipped_image , image ) ; image = DestroyImage ( image ) ; image = flipped_image ; } } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> height ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4131\n\n```\nCWE-189 static void nfs4_xdr_enc_getacl ( struct rpc_rqst * req , struct xdr_stream * xdr , struct nfs_getaclargs * args ) { struct compound_hdr hdr = { . minorversion = nfs4_xdr_minorversion ( & args -> seq_args ) , } ; uint32_t replen ; encode_compound_hdr ( xdr , req , & hdr ) ; encode_sequence ( xdr , & args -> seq_args , & hdr ) ; encode_putfh ( xdr , args -> fh , & hdr ) ; <S2SV_StartBug> replen = hdr . replen + op_decode_hdr_maxsz + nfs4_fattr_bitmap_maxsz + 1 ; <S2SV_EndBug> encode_getattr_two ( xdr , FATTR4_WORD0_ACL , 0 , & hdr ) ; xdr_inline_pages ( & req -> rq_rcv_buf , replen << 2 , args -> acl_pages , args -> acl_pgbase , args -> acl_len ) ; <S2SV_StartBug> encode_nops ( & hdr ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + op_decode_hdr_maxsz + <S2SV_ModEnd> 1 ; encode_getattr_two <S2SV_ModStart> acl_len ) ; xdr_set_scratch_buffer ( xdr , page_address ( args -> acl_scratch ) , PAGE_SIZE ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7043\n\n```\nCWE-295 static int ssl_verify_cert ( struct tunnel * tunnel ) { int ret = - 1 ; int cert_valid = 0 ; unsigned char digest [ SHA256LEN ] ; unsigned int len ; struct x509_digest * elem ; char digest_str [ SHA256STRLEN ] , * subject , * issuer ; char * line ; int i ; X509_NAME * subj ; SSL_set_verify ( tunnel -> ssl_handle , SSL_VERIFY_PEER , NULL ) ; X509 * cert = SSL_get_peer_certificate ( tunnel -> ssl_handle ) ; if ( cert == NULL ) { log_error ( \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>gateway<S2SV_blank>certificate.\\\\n\" ) ; return 1 ; } subj = X509_get_subject_name ( cert ) ; # ifdef HAVE_X509_CHECK_HOST if ( X509_check_host ( cert , tunnel -> config -> gateway_host , 0 , 0 , NULL ) == 1 ) cert_valid = 1 ; # else <S2SV_StartBug> char common_name [ FIELD_SIZE + 1 ] ; <S2SV_EndBug> if ( subj && X509_NAME_get_text_by_NID ( subj , NID_commonName , common_name , FIELD_SIZE ) > 0 && strncasecmp ( common_name , tunnel -> config -> gateway_host , <S2SV_StartBug> FIELD_SIZE ) == 0 ) <S2SV_EndBug> cert_valid = 1 ; # endif if ( cert_valid && SSL_get_verify_result ( tunnel -> ssl_handle ) == X509_V_OK ) { log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>succeeded.\\\\n\" ) ; ret = 0 ; goto free_cert ; } log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>failed.\\\\n\" ) ; if ( X509_digest ( cert , EVP_sha256 ( ) , digest , & len ) <= 0 || len != SHA256LEN ) { log_error ( \"Could<S2SV_blank>not<S2SV_blank>compute<S2SV_blank>certificate<S2SV_blank>sha256<S2SV_blank>digest.\\\\n\" ) ; goto free_cert ; } for ( i = 0 ; i < SHA256LEN ; i ++ ) sprintf ( & digest_str [ 2 * i ] , \"%02x\" , digest [ i ] ) ; digest_str [ SHA256STRLEN - 1 ] = '\\\\0' ; for ( elem = tunnel -> config -> cert_whitelist ; elem != NULL ; elem = elem -> next ) if ( memcmp ( digest_str , elem -> data , SHA256STRLEN - 1 ) == 0 ) break ; if ( elem != NULL ) { log_debug ( \"Gateway<S2SV_blank>certificate<S2SV_blank>digest<S2SV_blank>found<S2SV_blank>in<S2SV_blank>white<S2SV_blank>list.\\\\n\" ) ; ret = 0 ; goto free_cert ; } subject = X509_NAME_oneline ( subj , NULL , 0 ) ; issuer = X509_NAME_oneline ( X509_get_issuer_name ( cert ) , NULL , 0 ) ; log_error ( \"Gateway<S2SV_blank>certificate<S2SV_blank>validation<S2SV_blank>failed,<S2SV_blank>and<S2SV_blank>the<S2SV_blank>certificate<S2SV_blank>digest<S2SV_blank>in<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>local<S2SV_blank>whitelist.<S2SV_blank>If<S2SV_blank>you<S2SV_blank>trust<S2SV_blank>it,<S2SV_blank>rerun<S2SV_blank>with:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>--trusted-cert<S2SV_blank>%s\\\\n\" , digest_str ) ; log_error ( \"or<S2SV_blank>add<S2SV_blank>this<S2SV_blank>line<S2SV_blank>to<S2SV_blank>your<S2SV_blank>config<S2SV_blank>file:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>trusted-cert<S2SV_blank>=<S2SV_blank>%s\\\\n\" , digest_str ) ; log_error ( \"Gateway<S2SV_blank>certificate:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>subject:\\\\n\" ) ; for ( line = strtok ( subject , \"/\" ) ; line != NULL ; line = strtok ( NULL , \"/\" ) ) log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , line ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>issuer:\\\\n\" ) ; for ( line = strtok ( issuer , \"/\" ) ; line != NULL ; line = strtok ( NULL , \"/\" ) ) log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , line ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>sha256<S2SV_blank>digest:\\\\n\" ) ; log_error ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\\\\n\" , digest_str ) ; free_cert : X509_free ( cert ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # else if ( validate_hostname ( <S2SV_ModEnd> tunnel -> config <S2SV_ModStart> -> gateway_host , cert ) == MatchFound <S2SV_ModEnd> ) cert_valid =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2491\n\n```\nCWE-400 static void rpc_init_task ( struct rpc_task * task , const struct rpc_task_setup * task_setup_data ) { memset ( task , 0 , sizeof ( * task ) ) ; atomic_set ( & task -> tk_count , 1 ) ; task -> tk_flags = task_setup_data -> flags ; task -> tk_ops = task_setup_data -> callback_ops ; task -> tk_calldata = task_setup_data -> callback_data ; INIT_LIST_HEAD ( & task -> tk_task ) ; task -> tk_garb_retry = 2 ; task -> tk_cred_retry = 2 ; <S2SV_StartBug> task -> tk_priority = task_setup_data -> priority - RPC_PRIORITY_LOW ; <S2SV_EndBug> task -> tk_owner = current -> tgid ; task -> tk_workqueue = task_setup_data -> workqueue ; if ( task -> tk_ops -> rpc_call_prepare != NULL ) task -> tk_action = rpc_prepare_task ; task -> tk_start = ktime_get ( ) ; dprintk ( \"RPC:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>new<S2SV_blank>task<S2SV_blank>initialized,<S2SV_blank>procpid<S2SV_blank>%u\\\\n\" , task_pid_nr ( current ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; task -> tk_rebind_retry = 2 ; task ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1066\n\n```\nCWE-476 void build_ntlmssp_negotiate_blob ( unsigned char * pbuffer , struct cifs_ses * ses ) { NEGOTIATE_MESSAGE * sec_blob = ( NEGOTIATE_MESSAGE * ) pbuffer ; __u32 flags ; memset ( pbuffer , 0 , sizeof ( NEGOTIATE_MESSAGE ) ) ; memcpy ( sec_blob -> Signature , NTLMSSP_SIGNATURE , 8 ) ; sec_blob -> MessageType = NtLmNegotiate ; flags = NTLMSSP_NEGOTIATE_56 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE | <S2SV_StartBug> NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC ; <S2SV_EndBug> <S2SV_StartBug> if ( ses -> server -> sign ) { <S2SV_EndBug> flags |= NTLMSSP_NEGOTIATE_SIGN ; if ( ! ses -> server -> session_estab || ses -> ntlmssp -> sesskey_per_smbsess ) flags |= NTLMSSP_NEGOTIATE_KEY_XCH ; <S2SV_StartBug> } <S2SV_EndBug> sec_blob -> NegotiateFlags = cpu_to_le32 ( flags ) ; sec_blob -> WorkstationName . BufferOffset = 0 ; sec_blob -> WorkstationName . Length = 0 ; sec_blob -> WorkstationName . MaximumLength = 0 ; sec_blob -> DomainName . BufferOffset = 0 ; sec_blob -> DomainName . Length = 0 ; sec_blob -> DomainName . MaximumLength = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC | NTLMSSP_NEGOTIATE_SEAL <S2SV_ModStart> -> sign ) <S2SV_ModEnd> flags |= NTLMSSP_NEGOTIATE_SIGN <S2SV_ModStart> |= NTLMSSP_NEGOTIATE_KEY_XCH ; <S2SV_ModEnd> sec_blob -> NegotiateFlags\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int vp8_rd_pick_best_mbsegmentation ( VP8_COMP * cpi , MACROBLOCK * x , int_mv * best_ref_mv , int best_rd , int * mdcounts , int * returntotrate , int * returnyrate , int * returndistortion , int mvthresh ) { int i ; BEST_SEG_INFO bsi ; <S2SV_StartBug> vpx_memset ( & bsi , 0 , sizeof ( bsi ) ) ; <S2SV_EndBug> bsi . segment_rd = best_rd ; bsi . ref_mv = best_ref_mv ; bsi . mvp . as_int = best_ref_mv -> as_int ; bsi . mvthresh = mvthresh ; bsi . mdcounts = mdcounts ; for ( i = 0 ; i < 16 ; i ++ ) { bsi . modes [ i ] = ZERO4X4 ; } if ( cpi -> compressor_speed == 0 ) { rd_check_segment ( cpi , x , & bsi , BLOCK_16X8 ) ; rd_check_segment ( cpi , x , & bsi , BLOCK_8X16 ) ; rd_check_segment ( cpi , x , & bsi , BLOCK_8X8 ) ; rd_check_segment ( cpi , x , & bsi , BLOCK_4X4 ) ; } else { int sr ; rd_check_segment ( cpi , x , & bsi , BLOCK_8X8 ) ; if ( bsi . segment_rd < best_rd ) { int col_min = ( ( best_ref_mv -> as_mv . col + 7 ) >> 3 ) - MAX_FULL_PEL_VAL ; int row_min = ( ( best_ref_mv -> as_mv . row + 7 ) >> 3 ) - MAX_FULL_PEL_VAL ; int col_max = ( best_ref_mv -> as_mv . col >> 3 ) + MAX_FULL_PEL_VAL ; int row_max = ( best_ref_mv -> as_mv . row >> 3 ) + MAX_FULL_PEL_VAL ; int tmp_col_min = x -> mv_col_min ; int tmp_col_max = x -> mv_col_max ; int tmp_row_min = x -> mv_row_min ; int tmp_row_max = x -> mv_row_max ; if ( x -> mv_col_min < col_min ) x -> mv_col_min = col_min ; if ( x -> mv_col_max > col_max ) x -> mv_col_max = col_max ; if ( x -> mv_row_min < row_min ) x -> mv_row_min = row_min ; if ( x -> mv_row_max > row_max ) x -> mv_row_max = row_max ; bsi . sv_mvp [ 0 ] . as_int = bsi . mvs [ 0 ] . as_int ; bsi . sv_mvp [ 1 ] . as_int = bsi . mvs [ 2 ] . as_int ; bsi . sv_mvp [ 2 ] . as_int = bsi . mvs [ 8 ] . as_int ; bsi . sv_mvp [ 3 ] . as_int = bsi . mvs [ 10 ] . as_int ; { sr = MAXF ( ( abs ( bsi . sv_mvp [ 0 ] . as_mv . row - bsi . sv_mvp [ 2 ] . as_mv . row ) ) >> 3 , ( abs ( bsi . sv_mvp [ 0 ] . as_mv . col - bsi . sv_mvp [ 2 ] . as_mv . col ) ) >> 3 ) ; vp8_cal_step_param ( sr , & bsi . sv_istep [ 0 ] ) ; sr = MAXF ( ( abs ( bsi . sv_mvp [ 1 ] . as_mv . row - bsi . sv_mvp [ 3 ] . as_mv . row ) ) >> 3 , ( abs ( bsi . sv_mvp [ 1 ] . as_mv . col - bsi . sv_mvp [ 3 ] . as_mv . col ) ) >> 3 ) ; vp8_cal_step_param ( sr , & bsi . sv_istep [ 1 ] ) ; rd_check_segment ( cpi , x , & bsi , BLOCK_8X16 ) ; } { sr = MAXF ( ( abs ( bsi . sv_mvp [ 0 ] . as_mv . row - bsi . sv_mvp [ 1 ] . as_mv . row ) ) >> 3 , ( abs ( bsi . sv_mvp [ 0 ] . as_mv . col - bsi . sv_mvp [ 1 ] . as_mv . col ) ) >> 3 ) ; vp8_cal_step_param ( sr , & bsi . sv_istep [ 0 ] ) ; sr = MAXF ( ( abs ( bsi . sv_mvp [ 2 ] . as_mv . row - bsi . sv_mvp [ 3 ] . as_mv . row ) ) >> 3 , ( abs ( bsi . sv_mvp [ 2 ] . as_mv . col - bsi . sv_mvp [ 3 ] . as_mv . col ) ) >> 3 ) ; vp8_cal_step_param ( sr , & bsi . sv_istep [ 1 ] ) ; rd_check_segment ( cpi , x , & bsi , BLOCK_16X8 ) ; } if ( cpi -> sf . no_skip_block4x4_search || bsi . segment_num == BLOCK_8X8 ) { bsi . mvp . as_int = bsi . sv_mvp [ 0 ] . as_int ; rd_check_segment ( cpi , x , & bsi , BLOCK_4X4 ) ; } x -> mv_col_min = tmp_col_min ; x -> mv_col_max = tmp_col_max ; x -> mv_row_min = tmp_row_min ; x -> mv_row_max = tmp_row_max ; } } for ( i = 0 ; i < 16 ; i ++ ) { BLOCKD * bd = & x -> e_mbd . block [ i ] ; bd -> bmi . mv . as_int = bsi . mvs [ i ] . as_int ; * bd -> eob = bsi . eobs [ i ] ; } * returntotrate = bsi . r ; * returndistortion = bsi . d ; * returnyrate = bsi . segment_yrate ; x -> e_mbd . mode_info_context -> mbmi . partitioning = bsi . segment_num ; x -> partition_info -> count = vp8_mbsplit_count [ bsi . segment_num ] ; for ( i = 0 ; i < x -> partition_info -> count ; i ++ ) { int j ; j = vp8_mbsplit_offset [ bsi . segment_num ] [ i ] ; x -> partition_info -> bmi [ i ] . mode = bsi . modes [ j ] ; x -> partition_info -> bmi [ i ] . mv . as_mv = bsi . mvs [ j ] . as_mv ; } x -> partition_info -> bmi [ 15 ] . mv . as_int = bsi . mvs [ 15 ] . as_int ; return bsi . segment_rd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BEST_SEG_INFO bsi ; memset <S2SV_ModEnd> ( & bsi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3178\n\n```\nCWE-125 void processRequest ( struct reqelem * req ) { ssize_t n ; unsigned int l , m ; unsigned char buf [ 2048 ] ; const unsigned char * p ; enum request_type type ; struct device * d = devlist ; unsigned char rbuf [ RESPONSE_BUFFER_SIZE ] ; unsigned char * rp ; unsigned char nrep = 0 ; time_t t ; struct service * newserv = NULL ; struct service * serv ; n = read ( req -> socket , buf , sizeof ( buf ) ) ; if ( n < 0 ) { if ( errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK ) return ; syslog ( LOG_ERR , \"(s=%d)<S2SV_blank>processRequest():<S2SV_blank>read():<S2SV_blank>%m\" , req -> socket ) ; goto error ; } if ( n == 0 ) { syslog ( LOG_INFO , \"(s=%d)<S2SV_blank>request<S2SV_blank>connection<S2SV_blank>closed\" , req -> socket ) ; goto error ; } t = time ( NULL ) ; type = buf [ 0 ] ; p = buf + 1 ; DECODELENGTH_CHECKLIMIT ( l , p , buf + n ) ; <S2SV_StartBug> if ( p + l > buf + n ) { <S2SV_EndBug> syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length<S2SV_blank>encoding<S2SV_blank>l=%u<S2SV_blank>n=%u)\" , l , ( unsigned ) n ) ; goto error ; } if ( l == 0 && type != MINISSDPD_SEARCH_ALL && type != MINISSDPD_GET_VERSION && type != MINISSDPD_NOTIF ) { syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length=0,<S2SV_blank>type=%d)\" , type ) ; goto error ; } syslog ( LOG_INFO , \"(s=%d)<S2SV_blank>request<S2SV_blank>type=%d<S2SV_blank>str=\\'%.*s\\'\" , req -> socket , type , l , p ) ; switch ( type ) { case MINISSDPD_GET_VERSION : rp = rbuf ; CODELENGTH ( ( sizeof ( MINISSDPD_VERSION ) - 1 ) , rp ) ; memcpy ( rp , MINISSDPD_VERSION , sizeof ( MINISSDPD_VERSION ) - 1 ) ; rp += ( sizeof ( MINISSDPD_VERSION ) - 1 ) ; if ( write_or_buffer ( req , rbuf , rp - rbuf ) < 0 ) { syslog ( LOG_ERR , \"(s=%d)<S2SV_blank>write:<S2SV_blank>%m\" , req -> socket ) ; goto error ; } break ; case MINISSDPD_SEARCH_TYPE : case MINISSDPD_SEARCH_USN : case MINISSDPD_SEARCH_ALL : rp = rbuf + 1 ; while ( d && ( nrep < 255 ) ) { if ( d -> t < t ) { syslog ( LOG_INFO , \"outdated<S2SV_blank>device\" ) ; } else { if ( d -> headers [ HEADER_LOCATION ] . l + d -> headers [ HEADER_NT ] . l + d -> headers [ HEADER_USN ] . l + 6 + ( rp - rbuf ) >= ( int ) sizeof ( rbuf ) ) break ; if ( ( type == MINISSDPD_SEARCH_TYPE && 0 == memcmp ( d -> headers [ HEADER_NT ] . p , p , l ) ) || ( type == MINISSDPD_SEARCH_USN && 0 == memcmp ( d -> headers [ HEADER_USN ] . p , p , l ) ) || ( type == MINISSDPD_SEARCH_ALL ) ) { m = d -> headers [ HEADER_LOCATION ] . l ; CODELENGTH ( m , rp ) ; memcpy ( rp , d -> headers [ HEADER_LOCATION ] . p , d -> headers [ HEADER_LOCATION ] . l ) ; rp += d -> headers [ HEADER_LOCATION ] . l ; m = d -> headers [ HEADER_NT ] . l ; CODELENGTH ( m , rp ) ; memcpy ( rp , d -> headers [ HEADER_NT ] . p , d -> headers [ HEADER_NT ] . l ) ; rp += d -> headers [ HEADER_NT ] . l ; m = d -> headers [ HEADER_USN ] . l ; CODELENGTH ( m , rp ) ; memcpy ( rp , d -> headers [ HEADER_USN ] . p , d -> headers [ HEADER_USN ] . l ) ; rp += d -> headers [ HEADER_USN ] . l ; nrep ++ ; } } d = d -> next ; } for ( serv = servicelisthead . lh_first ; serv && ( nrep < 255 ) ; serv = serv -> entries . le_next ) { if ( strlen ( serv -> location ) + strlen ( serv -> st ) + strlen ( serv -> usn ) + 6 + ( rp - rbuf ) >= sizeof ( rbuf ) ) break ; if ( ( type == MINISSDPD_SEARCH_TYPE && 0 == strncmp ( serv -> st , ( const char * ) p , l ) ) || ( type == MINISSDPD_SEARCH_USN && 0 == strncmp ( serv -> usn , ( const char * ) p , l ) ) || ( type == MINISSDPD_SEARCH_ALL ) ) { m = strlen ( serv -> location ) ; CODELENGTH ( m , rp ) ; memcpy ( rp , serv -> location , m ) ; rp += m ; m = strlen ( serv -> st ) ; CODELENGTH ( m , rp ) ; memcpy ( rp , serv -> st , m ) ; rp += m ; m = strlen ( serv -> usn ) ; CODELENGTH ( m , rp ) ; memcpy ( rp , serv -> usn , m ) ; rp += m ; nrep ++ ; } } rbuf [ 0 ] = nrep ; syslog ( LOG_DEBUG , \"(s=%d)<S2SV_blank>response<S2SV_blank>:<S2SV_blank>%d<S2SV_blank>device%s\" , req -> socket , nrep , ( nrep > 1 ) ? \"s\" : \"\" ) ; if ( write_or_buffer ( req , rbuf , rp - rbuf ) < 0 ) { syslog ( LOG_ERR , \"(s=%d)<S2SV_blank>write:<S2SV_blank>%m\" , req -> socket ) ; goto error ; } break ; case MINISSDPD_SUBMIT : newserv = malloc ( sizeof ( struct service ) ) ; if ( ! newserv ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memset ( newserv , 0 , sizeof ( struct service ) ) ; if ( containsForbiddenChars ( p , l ) ) { syslog ( LOG_ERR , \"bad<S2SV_blank>request<S2SV_blank>(st<S2SV_blank>contains<S2SV_blank>forbidden<S2SV_blank>chars)\" ) ; goto error ; } newserv -> st = malloc ( l + 1 ) ; if ( ! newserv -> st ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memcpy ( newserv -> st , p , l ) ; newserv -> st [ l ] = '\\\\0' ; p += l ; if ( p >= buf + n ) { syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(missing<S2SV_blank>usn)\" ) ; goto error ; } DECODELENGTH_CHECKLIMIT ( l , p , buf + n ) ; <S2SV_StartBug> if ( p + l > buf + n ) { <S2SV_EndBug> syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length<S2SV_blank>encoding)\" ) ; goto error ; } if ( containsForbiddenChars ( p , l ) ) { syslog ( LOG_ERR , \"bad<S2SV_blank>request<S2SV_blank>(usn<S2SV_blank>contains<S2SV_blank>forbidden<S2SV_blank>chars)\" ) ; goto error ; } syslog ( LOG_INFO , \"usn=\\'%.*s\\'\" , l , p ) ; newserv -> usn = malloc ( l + 1 ) ; if ( ! newserv -> usn ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memcpy ( newserv -> usn , p , l ) ; newserv -> usn [ l ] = '\\\\0' ; p += l ; DECODELENGTH_CHECKLIMIT ( l , p , buf + n ) ; <S2SV_StartBug> if ( p + l > buf + n ) { <S2SV_EndBug> syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length<S2SV_blank>encoding)\" ) ; goto error ; } if ( containsForbiddenChars ( p , l ) ) { syslog ( LOG_ERR , \"bad<S2SV_blank>request<S2SV_blank>(server<S2SV_blank>contains<S2SV_blank>forbidden<S2SV_blank>chars)\" ) ; goto error ; } syslog ( LOG_INFO , \"server=\\'%.*s\\'\" , l , p ) ; newserv -> server = malloc ( l + 1 ) ; if ( ! newserv -> server ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memcpy ( newserv -> server , p , l ) ; newserv -> server [ l ] = '\\\\0' ; p += l ; DECODELENGTH_CHECKLIMIT ( l , p , buf + n ) ; <S2SV_StartBug> if ( p + l > buf + n ) { <S2SV_EndBug> syslog ( LOG_WARNING , \"bad<S2SV_blank>request<S2SV_blank>(length<S2SV_blank>encoding)\" ) ; goto error ; } if ( containsForbiddenChars ( p , l ) ) { syslog ( LOG_ERR , \"bad<S2SV_blank>request<S2SV_blank>(location<S2SV_blank>contains<S2SV_blank>forbidden<S2SV_blank>chars)\" ) ; goto error ; } syslog ( LOG_INFO , \"location=\\'%.*s\\'\" , l , p ) ; newserv -> location = malloc ( l + 1 ) ; if ( ! newserv -> location ) { syslog ( LOG_ERR , \"cannot<S2SV_blank>allocate<S2SV_blank>memory\" ) ; goto error ; } memcpy ( newserv -> location , p , l ) ; newserv -> location [ l ] = '\\\\0' ; for ( serv = servicelisthead . lh_first ; serv ; serv = serv -> entries . le_next ) { if ( 0 == strcmp ( newserv -> usn , serv -> usn ) && 0 == strcmp ( newserv -> st , serv -> st ) ) { syslog ( LOG_INFO , \"Service<S2SV_blank>already<S2SV_blank>in<S2SV_blank>the<S2SV_blank>list.<S2SV_blank>Updating...\" ) ; free ( newserv -> st ) ; free ( newserv -> usn ) ; free ( serv -> server ) ; serv -> server = newserv -> server ; free ( serv -> location ) ; serv -> location = newserv -> location ; free ( newserv ) ; newserv = NULL ; return ; } } LIST_INSERT_HEAD ( & servicelisthead , newserv , entries ) ; sendNotifications ( NOTIF_NEW , NULL , newserv ) ; newserv = NULL ; break ; case MINISSDPD_NOTIF : rbuf [ 0 ] = '\\\\0' ; if ( write_or_buffer ( req , rbuf , 1 ) < 0 ) { syslog ( LOG_ERR , \"(s=%d)<S2SV_blank>write:<S2SV_blank>%m\" , req -> socket ) ; goto error ; } req -> is_notify = 1 ; break ; default : syslog ( LOG_WARNING , \"Unknown<S2SV_blank>request<S2SV_blank>type<S2SV_blank>%d\" , type ) ; rbuf [ 0 ] = '\\\\0' ; if ( write_or_buffer ( req , rbuf , 1 ) < 0 ) { syslog ( LOG_ERR , \"(s=%d)<S2SV_blank>write:<S2SV_blank>%m\" , req -> socket ) ; goto error ; } } return ; error : if ( newserv ) { free ( newserv -> st ) ; free ( newserv -> usn ) ; free ( newserv -> server ) ; free ( newserv -> location ) ; free ( newserv ) ; newserv = NULL ; } close ( req -> socket ) ; req -> socket = - 1 ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( l > ( unsigned ) ( <S2SV_ModEnd> buf + n <S2SV_ModStart> buf + n - p ) <S2SV_ModStart> ; if ( l > ( unsigned ) ( <S2SV_ModEnd> buf + n <S2SV_ModStart> buf + n - p ) <S2SV_ModStart> ; if ( l > ( unsigned ) ( <S2SV_ModEnd> buf + n <S2SV_ModStart> buf + n - p ) <S2SV_ModStart> ; if ( l > ( unsigned ) ( <S2SV_ModEnd> buf + n <S2SV_ModStart> buf + n - p )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4127\n\n```\nCWE-399 static long vhost_net_set_backend ( struct vhost_net * n , unsigned index , int fd ) { struct socket * sock , * oldsock ; struct vhost_virtqueue * vq ; struct vhost_net_virtqueue * nvq ; struct vhost_net_ubuf_ref * ubufs , * oldubufs = NULL ; int r ; mutex_lock ( & n -> dev . mutex ) ; r = vhost_dev_check_owner ( & n -> dev ) ; if ( r ) goto err ; if ( index >= VHOST_NET_VQ_MAX ) { r = - ENOBUFS ; goto err ; } vq = & n -> vqs [ index ] . vq ; nvq = & n -> vqs [ index ] ; mutex_lock ( & vq -> mutex ) ; if ( ! vhost_vq_access_ok ( vq ) ) { r = - EFAULT ; goto err_vq ; } sock = get_socket ( fd ) ; if ( IS_ERR ( sock ) ) { r = PTR_ERR ( sock ) ; goto err_vq ; } oldsock = rcu_dereference_protected ( vq -> private_data , lockdep_is_held ( & vq -> mutex ) ) ; if ( sock != oldsock ) { ubufs = vhost_net_ubuf_alloc ( vq , sock && vhost_sock_zcopy ( sock ) ) ; if ( IS_ERR ( ubufs ) ) { r = PTR_ERR ( ubufs ) ; goto err_ubufs ; } vhost_net_disable_vq ( n , vq ) ; rcu_assign_pointer ( vq -> private_data , sock ) ; r = vhost_init_used ( vq ) ; if ( r ) goto err_used ; r = vhost_net_enable_vq ( n , vq ) ; if ( r ) goto err_used ; oldubufs = nvq -> ubufs ; nvq -> ubufs = ubufs ; n -> tx_packets = 0 ; n -> tx_zcopy_err = 0 ; n -> tx_flush = false ; } mutex_unlock ( & vq -> mutex ) ; if ( oldubufs ) { <S2SV_StartBug> vhost_net_ubuf_put_and_wait ( oldubufs ) ; <S2SV_EndBug> mutex_lock ( & vq -> mutex ) ; vhost_zerocopy_signal_used ( n , vq ) ; mutex_unlock ( & vq -> mutex ) ; } if ( oldsock ) { vhost_net_flush_vq ( n , index ) ; fput ( oldsock -> file ) ; } mutex_unlock ( & n -> dev . mutex ) ; return 0 ; err_used : rcu_assign_pointer ( vq -> private_data , oldsock ) ; vhost_net_enable_vq ( n , vq ) ; if ( ubufs ) <S2SV_StartBug> vhost_net_ubuf_put_and_wait ( ubufs ) ; <S2SV_EndBug> err_ubufs : fput ( sock -> file ) ; err_vq : mutex_unlock ( & vq -> mutex ) ; err : mutex_unlock ( & n -> dev . mutex ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> oldubufs ) { vhost_net_ubuf_put_wait_and_free <S2SV_ModEnd> ( oldubufs ) <S2SV_ModStart> ( ubufs ) vhost_net_ubuf_put_wait_and_free <S2SV_ModEnd> ( ubufs )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1796\n\n```\nCWE-119 int kvm_set_msr_common ( struct kvm_vcpu * vcpu , struct msr_data * msr_info ) { bool pr = false ; u32 msr = msr_info -> index ; u64 data = msr_info -> data ; switch ( msr ) { case MSR_AMD64_NB_CFG : case MSR_IA32_UCODE_REV : case MSR_IA32_UCODE_WRITE : case MSR_VM_HSAVE_PA : case MSR_AMD64_PATCH_LOADER : case MSR_AMD64_BU_CFG2 : break ; case MSR_EFER : return set_efer ( vcpu , data ) ; case MSR_K7_HWCR : data &= ~ ( u64 ) 0x40 ; data &= ~ ( u64 ) 0x100 ; data &= ~ ( u64 ) 0x8 ; if ( data != 0 ) { vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>HWCR<S2SV_blank>wrmsr:<S2SV_blank>0x%llx\\\\n\" , data ) ; return 1 ; } break ; case MSR_FAM10H_MMIO_CONF_BASE : if ( data != 0 ) { vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>MMIO_CONF_BASE<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%llx\\\\n\" , data ) ; return 1 ; } break ; case MSR_IA32_DEBUGCTLMSR : if ( ! data ) { break ; } else if ( data & ~ ( DEBUGCTLMSR_LBR | DEBUGCTLMSR_BTF ) ) { return 1 ; } vcpu_unimpl ( vcpu , \"%s:<S2SV_blank>MSR_IA32_DEBUGCTLMSR<S2SV_blank>0x%llx,<S2SV_blank>nop\\\\n\" , __func__ , data ) ; break ; case 0x200 ... 0x2ff : return set_msr_mtrr ( vcpu , msr , data ) ; case MSR_IA32_APICBASE : kvm_set_apic_base ( vcpu , data ) ; break ; case APIC_BASE_MSR ... APIC_BASE_MSR + 0x3ff : return kvm_x2apic_msr_write ( vcpu , msr , data ) ; case MSR_IA32_TSCDEADLINE : kvm_set_lapic_tscdeadline_msr ( vcpu , data ) ; break ; case MSR_IA32_TSC_ADJUST : if ( guest_cpuid_has_tsc_adjust ( vcpu ) ) { if ( ! msr_info -> host_initiated ) { u64 adj = data - vcpu -> arch . ia32_tsc_adjust_msr ; kvm_x86_ops -> adjust_tsc_offset ( vcpu , adj , true ) ; } vcpu -> arch . ia32_tsc_adjust_msr = data ; } break ; case MSR_IA32_MISC_ENABLE : vcpu -> arch . ia32_misc_enable_msr = data ; break ; case MSR_KVM_WALL_CLOCK_NEW : case MSR_KVM_WALL_CLOCK : vcpu -> kvm -> arch . wall_clock = data ; kvm_write_wall_clock ( vcpu -> kvm , data ) ; break ; case MSR_KVM_SYSTEM_TIME_NEW : case MSR_KVM_SYSTEM_TIME : { kvmclock_reset ( vcpu ) ; vcpu -> arch . time = data ; kvm_make_request ( KVM_REQ_CLOCK_UPDATE , vcpu ) ; if ( ! ( data & 1 ) ) break ; <S2SV_StartBug> vcpu -> arch . time_offset = data & ~ ( PAGE_MASK | 1 ) ; <S2SV_EndBug> vcpu -> arch . time_page = gfn_to_page ( vcpu -> kvm , data >> PAGE_SHIFT ) ; if ( is_error_page ( vcpu -> arch . time_page ) ) vcpu -> arch . time_page = NULL ; break ; } case MSR_KVM_ASYNC_PF_EN : if ( kvm_pv_enable_async_pf ( vcpu , data ) ) return 1 ; break ; case MSR_KVM_STEAL_TIME : if ( unlikely ( ! sched_info_on ( ) ) ) return 1 ; if ( data & KVM_STEAL_RESERVED_MASK ) return 1 ; if ( kvm_gfn_to_hva_cache_init ( vcpu -> kvm , & vcpu -> arch . st . stime , data & KVM_STEAL_VALID_BITS ) ) return 1 ; vcpu -> arch . st . msr_val = data ; if ( ! ( data & KVM_MSR_ENABLED ) ) break ; vcpu -> arch . st . last_steal = current -> sched_info . run_delay ; preempt_disable ( ) ; accumulate_steal_time ( vcpu ) ; preempt_enable ( ) ; kvm_make_request ( KVM_REQ_STEAL_UPDATE , vcpu ) ; break ; case MSR_KVM_PV_EOI_EN : if ( kvm_lapic_enable_pv_eoi ( vcpu , data ) ) return 1 ; break ; case MSR_IA32_MCG_CTL : case MSR_IA32_MCG_STATUS : case MSR_IA32_MC0_CTL ... MSR_IA32_MC0_CTL + 4 * KVM_MAX_MCE_BANKS - 1 : return set_msr_mce ( vcpu , msr , data ) ; case MSR_K7_EVNTSEL0 : case MSR_K7_EVNTSEL1 : case MSR_K7_EVNTSEL2 : case MSR_K7_EVNTSEL3 : if ( data != 0 ) vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_K7_PERFCTR0 : case MSR_K7_PERFCTR1 : case MSR_K7_PERFCTR2 : case MSR_K7_PERFCTR3 : vcpu_unimpl ( vcpu , \"unimplemented<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_P6_PERFCTR0 : case MSR_P6_PERFCTR1 : pr = true ; case MSR_P6_EVNTSEL0 : case MSR_P6_EVNTSEL1 : if ( kvm_pmu_msr ( vcpu , msr ) ) return kvm_pmu_set_msr ( vcpu , msr , data ) ; if ( pr || data != 0 ) vcpu_unimpl ( vcpu , \"disabled<S2SV_blank>perfctr<S2SV_blank>wrmsr:<S2SV_blank>\" \"0x%x<S2SV_blank>data<S2SV_blank>0x%llx\\\\n\" , msr , data ) ; break ; case MSR_K7_CLK_CTL : break ; case HV_X64_MSR_GUEST_OS_ID ... HV_X64_MSR_SINT15 : if ( kvm_hv_msr_partition_wide ( msr ) ) { int r ; mutex_lock ( & vcpu -> kvm -> lock ) ; r = set_msr_hyperv_pw ( vcpu , msr , data ) ; mutex_unlock ( & vcpu -> kvm -> lock ) ; return r ; } else return set_msr_hyperv ( vcpu , msr , data ) ; break ; case MSR_IA32_BBL_CR_CTL3 : vcpu_unimpl ( vcpu , \"ignored<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; break ; case MSR_AMD64_OSVW_ID_LENGTH : if ( ! guest_cpuid_has_osvw ( vcpu ) ) return 1 ; vcpu -> arch . osvw . length = data ; break ; case MSR_AMD64_OSVW_STATUS : if ( ! guest_cpuid_has_osvw ( vcpu ) ) return 1 ; vcpu -> arch . osvw . status = data ; break ; default : if ( msr && ( msr == vcpu -> kvm -> arch . xen_hvm_config . msr ) ) return xen_hvm_config ( vcpu , data ) ; if ( kvm_pmu_msr ( vcpu , msr ) ) return kvm_pmu_set_msr ( vcpu , msr , data ) ; if ( ! ignore_msrs ) { vcpu_unimpl ( vcpu , \"unhandled<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; return 1 ; } else { vcpu_unimpl ( vcpu , \"ignored<S2SV_blank>wrmsr:<S2SV_blank>0x%x<S2SV_blank>data<S2SV_blank>%llx\\\\n\" , msr , data ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> | 1 ) ; if ( vcpu -> arch . time_offset & ( sizeof ( struct pvclock_vcpu_time_info ) - 1 ) ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_alloc_compressor_data ( VP8_COMP * cpi ) { VP8_COMMON * cm = & cpi -> common ; int width = cm -> Width ; int height = cm -> Height ; if ( vp8_alloc_frame_buffers ( cm , width , height ) ) vpx_internal_error ( & cpi -> common . error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>frame<S2SV_blank>buffers\" ) ; if ( vp8_alloc_partition_data ( cpi ) ) vpx_internal_error ( & cpi -> common . error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>partition<S2SV_blank>data\" ) ; if ( ( width & 0xf ) != 0 ) width += 16 - ( width & 0xf ) ; if ( ( height & 0xf ) != 0 ) height += 16 - ( height & 0xf ) ; if ( vp8_yv12_alloc_frame_buffer ( & cpi -> pick_lf_lvl_frame , width , height , VP8BORDERINPIXELS ) ) vpx_internal_error ( & cpi -> common . error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>last<S2SV_blank>frame<S2SV_blank>buffer\" ) ; if ( vp8_yv12_alloc_frame_buffer ( & cpi -> scaled_source , width , height , VP8BORDERINPIXELS ) ) vpx_internal_error ( & cpi -> common . error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>scaled<S2SV_blank>source<S2SV_blank>buffer\" ) ; vpx_free ( cpi -> tok ) ; { # if CONFIG_REALTIME_ONLY & CONFIG_ONTHEFLY_BITPACKING unsigned int tokens = 8 * 24 * 16 ; # else unsigned int tokens = cm -> mb_rows * cm -> mb_cols * 24 * 16 ; # endif CHECK_MEM_ERROR ( cpi -> tok , vpx_calloc ( tokens , sizeof ( * cpi -> tok ) ) ) ; } cpi -> zeromv_count = 0 ; vpx_free ( cpi -> gf_active_flags ) ; CHECK_MEM_ERROR ( cpi -> gf_active_flags , vpx_calloc ( sizeof ( * cpi -> gf_active_flags ) , cm -> mb_rows * cm -> mb_cols ) ) ; cpi -> gf_active_count = cm -> mb_rows * cm -> mb_cols ; vpx_free ( cpi -> mb_activity_map ) ; CHECK_MEM_ERROR ( cpi -> mb_activity_map , vpx_calloc ( sizeof ( * cpi -> mb_activity_map ) , cm -> mb_rows * cm -> mb_cols ) ) ; vpx_free ( cpi -> lfmv ) ; CHECK_MEM_ERROR ( cpi -> lfmv , vpx_calloc ( ( cm -> mb_rows + 2 ) * ( cm -> mb_cols + 2 ) , sizeof ( * cpi -> lfmv ) ) ) ; vpx_free ( cpi -> lf_ref_frame_sign_bias ) ; CHECK_MEM_ERROR ( cpi -> lf_ref_frame_sign_bias , vpx_calloc ( ( cm -> mb_rows + 2 ) * ( cm -> mb_cols + 2 ) , sizeof ( * cpi -> lf_ref_frame_sign_bias ) ) ) ; vpx_free ( cpi -> lf_ref_frame ) ; CHECK_MEM_ERROR ( cpi -> lf_ref_frame , vpx_calloc ( ( cm -> mb_rows + 2 ) * ( cm -> mb_cols + 2 ) , sizeof ( * cpi -> lf_ref_frame ) ) ) ; vpx_free ( cpi -> segmentation_map ) ; CHECK_MEM_ERROR ( cpi -> segmentation_map , vpx_calloc ( cm -> mb_rows * cm -> mb_cols , sizeof ( * cpi -> segmentation_map ) ) ) ; cpi -> cyclic_refresh_mode_index = 0 ; vpx_free ( cpi -> active_map ) ; CHECK_MEM_ERROR ( cpi -> active_map , vpx_calloc ( cm -> mb_rows * cm -> mb_cols , sizeof ( * cpi -> active_map ) ) ) ; <S2SV_StartBug> vpx_memset ( cpi -> active_map , 1 , ( cm -> mb_rows * cm -> mb_cols ) ) ; <S2SV_EndBug> # if CONFIG_MULTITHREAD if ( width < 640 ) cpi -> mt_sync_range = 1 ; else if ( width <= 1280 ) cpi -> mt_sync_range = 4 ; else if ( width <= 2560 ) cpi -> mt_sync_range = 8 ; else cpi -> mt_sync_range = 16 ; if ( cpi -> oxcf . multi_threaded > 1 ) { vpx_free ( cpi -> mt_current_mb_col ) ; CHECK_MEM_ERROR ( cpi -> mt_current_mb_col , vpx_malloc ( sizeof ( * cpi -> mt_current_mb_col ) * cm -> mb_rows ) ) ; } # endif vpx_free ( cpi -> tplist ) ; CHECK_MEM_ERROR ( cpi -> tplist , vpx_malloc ( sizeof ( TOKENLIST ) * cm -> mb_rows ) ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> ) ) ; # if CONFIG_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity > 0 ) { vp8_denoiser_free ( & cpi -> denoiser ) ; vp8_denoiser_allocate ( & cpi -> denoiser , width , height , cm -> mb_rows , cm -> mb_cols , cpi -> oxcf . noise_sensitivity ) ; } # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9389\n\n```\nCWE-000 static int jpc_dec_tiledecode ( jpc_dec_t * dec , jpc_dec_tile_t * tile ) { int i ; int j ; jpc_dec_tcomp_t * tcomp ; jpc_dec_rlvl_t * rlvl ; jpc_dec_band_t * band ; int compno ; int rlvlno ; int bandno ; int adjust ; int v ; jpc_dec_ccp_t * ccp ; jpc_dec_cmpt_t * cmpt ; if ( jpc_dec_decodecblks ( dec , tile ) ) { jas_eprintf ( \"jpc_dec_decodecblks<S2SV_blank>failed\\\\n\" ) ; return - 1 ; } for ( compno = 0 , tcomp = tile -> tcomps ; compno < dec -> numcomps ; ++ compno , ++ tcomp ) { ccp = & tile -> cp -> ccps [ compno ] ; for ( rlvlno = 0 , rlvl = tcomp -> rlvls ; rlvlno < tcomp -> numrlvls ; ++ rlvlno , ++ rlvl ) { if ( ! rlvl -> bands ) { continue ; } for ( bandno = 0 , band = rlvl -> bands ; bandno < rlvl -> numbands ; ++ bandno , ++ band ) { if ( ! band -> data ) { continue ; } jpc_undo_roi ( band -> data , band -> roishift , ccp -> roishift - band -> roishift , band -> numbps ) ; if ( tile -> realmode ) { jas_matrix_asl ( band -> data , JPC_FIX_FRACBITS ) ; jpc_dequantize ( band -> data , band -> absstepsize ) ; } } } } for ( compno = 0 , tcomp = tile -> tcomps ; compno < dec -> numcomps ; ++ compno , ++ tcomp ) { ccp = & tile -> cp -> ccps [ compno ] ; jpc_tsfb_synthesize ( tcomp -> tsfb , tcomp -> data ) ; } switch ( tile -> cp -> mctid ) { case JPC_MCT_RCT : if ( dec -> numcomps < 3 ) { <S2SV_StartBug> jas_eprintf ( \"RCT<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>three<S2SV_blank>components\\\\n\" ) ; <S2SV_EndBug> return - 1 ; } jpc_irct ( tile -> tcomps [ 0 ] . data , tile -> tcomps [ 1 ] . data , tile -> tcomps [ 2 ] . data ) ; break ; case JPC_MCT_ICT : if ( dec -> numcomps < 3 ) { jas_eprintf ( \"ICT<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>three<S2SV_blank>components\\\\n\" ) ; return - 1 ; } <S2SV_StartBug> jpc_iict ( tile -> tcomps [ 0 ] . data , tile -> tcomps [ 1 ] . data , <S2SV_EndBug> tile -> tcomps [ 2 ] . data ) ; break ; } if ( tile -> realmode ) { for ( compno = 0 , tcomp = tile -> tcomps ; compno < dec -> numcomps ; ++ compno , ++ tcomp ) { for ( i = 0 ; i < jas_matrix_numrows ( tcomp -> data ) ; ++ i ) { for ( j = 0 ; j < jas_matrix_numcols ( tcomp -> data ) ; ++ j ) { v = jas_matrix_get ( tcomp -> data , i , j ) ; v = jpc_fix_round ( v ) ; jas_matrix_set ( tcomp -> data , i , j , jpc_fixtoint ( v ) ) ; } } } } for ( compno = 0 , tcomp = tile -> tcomps , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ tcomp , ++ cmpt ) { adjust = cmpt -> sgnd ? 0 : ( 1 << ( cmpt -> prec - 1 ) ) ; for ( i = 0 ; i < jas_matrix_numrows ( tcomp -> data ) ; ++ i ) { for ( j = 0 ; j < jas_matrix_numcols ( tcomp -> data ) ; ++ j ) { * jas_matrix_getref ( tcomp -> data , i , j ) += adjust ; } } } for ( compno = 0 , tcomp = tile -> tcomps , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ tcomp , ++ cmpt ) { jpc_fix_t mn ; jpc_fix_t mx ; mn = cmpt -> sgnd ? ( - ( 1 << ( cmpt -> prec - 1 ) ) ) : ( 0 ) ; mx = cmpt -> sgnd ? ( ( 1 << ( cmpt -> prec - 1 ) ) - 1 ) : ( ( 1 << cmpt -> prec ) - 1 ) ; jas_matrix_clip ( tcomp -> data , mn , mx ) ; } for ( compno = 0 , tcomp = tile -> tcomps , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ tcomp , ++ cmpt ) { if ( jas_image_writecmpt ( dec -> image , compno , tcomp -> xstart - JPC_CEILDIV ( dec -> xstart , cmpt -> hstep ) , tcomp -> ystart - JPC_CEILDIV ( dec -> ystart , cmpt -> vstep ) , jas_matrix_numcols ( tcomp -> data ) , jas_matrix_numrows ( tcomp -> data ) , tcomp -> data ) ) { jas_eprintf ( \"write<S2SV_blank>component<S2SV_blank>failed\\\\n\" ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> jas_eprintf ( \"RCT<S2SV_blank>requires<S2SV_blank>at<S2SV_blank>least<S2SV_blank>three<S2SV_blank>components\\\\n\" ) ; return - 1 ; } if ( ! jas_image_cmpt_domains_same ( dec -> image ) ) { jas_eprintf ( \"RCT<S2SV_blank>requires<S2SV_blank>all<S2SV_blank>components<S2SV_blank>have<S2SV_blank>the<S2SV_blank>same<S2SV_blank>domain\\\\n\" <S2SV_ModStart> 1 ; } if ( ! jas_image_cmpt_domains_same ( dec -> image ) ) { jas_eprintf ( \"RCT<S2SV_blank>requires<S2SV_blank>all<S2SV_blank>components<S2SV_blank>have<S2SV_blank>the<S2SV_blank>same<S2SV_blank>domain\\\\n\" ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void Bezier ( double x1 , double y1 , double x2 , double y2 , double x3 , double y3 ) { <S2SV_StartBug> outpos += <S2SV_EndBug> sprintf ( outpos , \"\\\\n<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>c\" , x1 , y1 , x2 , y2 , x3 , y3 ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> y3 ) { sprintf ( outputbuffer <S2SV_ModEnd> , \"\\\\n<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>c\" , <S2SV_ModStart> y3 ) ; sendClean ( outputbuffer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8339\n\n```\nCWE-119 void loadServerConfigFromString ( char * config ) { char * err = NULL ; int linenum = 0 , totlines , i ; int slaveof_linenum = 0 ; sds * lines ; lines = sdssplitlen ( config , strlen ( config ) , \"\\\\n\" , 1 , & totlines ) ; for ( i = 0 ; i < totlines ; i ++ ) { sds * argv ; int argc ; linenum = i + 1 ; lines [ i ] = sdstrim ( lines [ i ] , \"<S2SV_blank>\\\\t\\\\r\\\\n\" ) ; if ( lines [ i ] [ 0 ] == '#' || lines [ i ] [ 0 ] == '\\\\0' ) continue ; argv = sdssplitargs ( lines [ i ] , & argc ) ; if ( argv == NULL ) { err = \"Unbalanced<S2SV_blank>quotes<S2SV_blank>in<S2SV_blank>configuration<S2SV_blank>line\" ; goto loaderr ; } if ( argc == 0 ) { sdsfreesplitres ( argv , argc ) ; continue ; } sdstolower ( argv [ 0 ] ) ; if ( ! strcasecmp ( argv [ 0 ] , \"timeout\" ) && argc == 2 ) { server . maxidletime = atoi ( argv [ 1 ] ) ; if ( server . maxidletime < 0 ) { err = \"Invalid<S2SV_blank>timeout<S2SV_blank>value\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"tcp-keepalive\" ) && argc == 2 ) { server . tcpkeepalive = atoi ( argv [ 1 ] ) ; if ( server . tcpkeepalive < 0 ) { err = \"Invalid<S2SV_blank>tcp-keepalive<S2SV_blank>value\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"protected-mode\" ) && argc == 2 ) { if ( ( server . protected_mode = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"port\" ) && argc == 2 ) { server . port = atoi ( argv [ 1 ] ) ; if ( server . port < 0 || server . port > 65535 ) { err = \"Invalid<S2SV_blank>port\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"tcp-backlog\" ) && argc == 2 ) { server . tcp_backlog = atoi ( argv [ 1 ] ) ; if ( server . tcp_backlog < 0 ) { err = \"Invalid<S2SV_blank>backlog<S2SV_blank>value\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"bind\" ) && argc >= 2 ) { int j , addresses = argc - 1 ; if ( addresses > CONFIG_BINDADDR_MAX ) { err = \"Too<S2SV_blank>many<S2SV_blank>bind<S2SV_blank>addresses<S2SV_blank>specified\" ; goto loaderr ; } for ( j = 0 ; j < addresses ; j ++ ) server . bindaddr [ j ] = zstrdup ( argv [ j + 1 ] ) ; server . bindaddr_count = addresses ; } else if ( ! strcasecmp ( argv [ 0 ] , \"unixsocket\" ) && argc == 2 ) { server . unixsocket = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"unixsocketperm\" ) && argc == 2 ) { errno = 0 ; server . unixsocketperm = ( mode_t ) strtol ( argv [ 1 ] , NULL , 8 ) ; if ( errno || server . unixsocketperm > 0777 ) { err = \"Invalid<S2SV_blank>socket<S2SV_blank>file<S2SV_blank>permissions\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"save\" ) ) { if ( argc == 3 ) { int seconds = atoi ( argv [ 1 ] ) ; int changes = atoi ( argv [ 2 ] ) ; if ( seconds < 1 || changes < 0 ) { err = \"Invalid<S2SV_blank>save<S2SV_blank>parameters\" ; goto loaderr ; } appendServerSaveParams ( seconds , changes ) ; } else if ( argc == 2 && ! strcasecmp ( argv [ 1 ] , \"\" ) ) { resetServerSaveParams ( ) ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"dir\" ) && argc == 2 ) { if ( chdir ( argv [ 1 ] ) == - 1 ) { serverLog ( LL_WARNING , \"Can\\'t<S2SV_blank>chdir<S2SV_blank>to<S2SV_blank>\\'%s\\':<S2SV_blank>%s\" , argv [ 1 ] , strerror ( errno ) ) ; exit ( 1 ) ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"loglevel\" ) && argc == 2 ) { server . verbosity = configEnumGetValue ( loglevel_enum , argv [ 1 ] ) ; if ( server . verbosity == INT_MIN ) { err = \"Invalid<S2SV_blank>log<S2SV_blank>level.<S2SV_blank>\" \"Must<S2SV_blank>be<S2SV_blank>one<S2SV_blank>of<S2SV_blank>debug,<S2SV_blank>verbose,<S2SV_blank>notice,<S2SV_blank>warning\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"logfile\" ) && argc == 2 ) { FILE * logfp ; zfree ( server . logfile ) ; server . logfile = zstrdup ( argv [ 1 ] ) ; if ( server . logfile [ 0 ] != '\\\\0' ) { logfp = fopen ( server . logfile , \"a\" ) ; if ( logfp == NULL ) { err = sdscatprintf ( sdsempty ( ) , \"Can\\'t<S2SV_blank>open<S2SV_blank>the<S2SV_blank>log<S2SV_blank>file:<S2SV_blank>%s\" , strerror ( errno ) ) ; goto loaderr ; } fclose ( logfp ) ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"syslog-enabled\" ) && argc == 2 ) { if ( ( server . syslog_enabled = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"syslog-ident\" ) && argc == 2 ) { if ( server . syslog_ident ) zfree ( server . syslog_ident ) ; server . syslog_ident = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"syslog-facility\" ) && argc == 2 ) { server . syslog_facility = configEnumGetValue ( syslog_facility_enum , argv [ 1 ] ) ; if ( server . syslog_facility == INT_MIN ) { err = \"Invalid<S2SV_blank>log<S2SV_blank>facility.<S2SV_blank>Must<S2SV_blank>be<S2SV_blank>one<S2SV_blank>of<S2SV_blank>USER<S2SV_blank>or<S2SV_blank>between<S2SV_blank>LOCAL0-LOCAL7\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"databases\" ) && argc == 2 ) { server . dbnum = atoi ( argv [ 1 ] ) ; if ( server . dbnum < 1 ) { err = \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>databases\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"include\" ) && argc == 2 ) { loadServerConfig ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"maxclients\" ) && argc == 2 ) { server . maxclients = atoi ( argv [ 1 ] ) ; if ( server . maxclients < 1 ) { err = \"Invalid<S2SV_blank>max<S2SV_blank>clients<S2SV_blank>limit\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"maxmemory\" ) && argc == 2 ) { server . maxmemory = memtoll ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"maxmemory-policy\" ) && argc == 2 ) { server . maxmemory_policy = configEnumGetValue ( maxmemory_policy_enum , argv [ 1 ] ) ; if ( server . maxmemory_policy == INT_MIN ) { err = \"Invalid<S2SV_blank>maxmemory<S2SV_blank>policy\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"maxmemory-samples\" ) && argc == 2 ) { server . maxmemory_samples = atoi ( argv [ 1 ] ) ; if ( server . maxmemory_samples <= 0 ) { err = \"maxmemory-samples<S2SV_blank>must<S2SV_blank>be<S2SV_blank>1<S2SV_blank>or<S2SV_blank>greater\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"lfu-log-factor\" ) && argc == 2 ) { server . lfu_log_factor = atoi ( argv [ 1 ] ) ; if ( server . maxmemory_samples < 0 ) { err = \"lfu-log-factor<S2SV_blank>must<S2SV_blank>be<S2SV_blank>0<S2SV_blank>or<S2SV_blank>greater\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"lfu-decay-time\" ) && argc == 2 ) { server . lfu_decay_time = atoi ( argv [ 1 ] ) ; if ( server . maxmemory_samples < 1 ) { err = \"lfu-decay-time<S2SV_blank>must<S2SV_blank>be<S2SV_blank>0<S2SV_blank>or<S2SV_blank>greater\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"slaveof\" ) && argc == 3 ) { slaveof_linenum = linenum ; server . masterhost = sdsnew ( argv [ 1 ] ) ; server . masterport = atoi ( argv [ 2 ] ) ; server . repl_state = REPL_STATE_CONNECT ; } else if ( ! strcasecmp ( argv [ 0 ] , \"repl-ping-slave-period\" ) && argc == 2 ) { server . repl_ping_slave_period = atoi ( argv [ 1 ] ) ; if ( server . repl_ping_slave_period <= 0 ) { err = \"repl-ping-slave-period<S2SV_blank>must<S2SV_blank>be<S2SV_blank>1<S2SV_blank>or<S2SV_blank>greater\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"repl-timeout\" ) && argc == 2 ) { server . repl_timeout = atoi ( argv [ 1 ] ) ; if ( server . repl_timeout <= 0 ) { err = \"repl-timeout<S2SV_blank>must<S2SV_blank>be<S2SV_blank>1<S2SV_blank>or<S2SV_blank>greater\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"repl-disable-tcp-nodelay\" ) && argc == 2 ) { if ( ( server . repl_disable_tcp_nodelay = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"repl-diskless-sync\" ) && argc == 2 ) { if ( ( server . repl_diskless_sync = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"repl-diskless-sync-delay\" ) && argc == 2 ) { server . repl_diskless_sync_delay = atoi ( argv [ 1 ] ) ; if ( server . repl_diskless_sync_delay < 0 ) { err = \"repl-diskless-sync-delay<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>negative\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"repl-backlog-size\" ) && argc == 2 ) { long long size = memtoll ( argv [ 1 ] , NULL ) ; if ( size <= 0 ) { err = \"repl-backlog-size<S2SV_blank>must<S2SV_blank>be<S2SV_blank>1<S2SV_blank>or<S2SV_blank>greater.\" ; goto loaderr ; } resizeReplicationBacklog ( size ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"repl-backlog-ttl\" ) && argc == 2 ) { server . repl_backlog_time_limit = atoi ( argv [ 1 ] ) ; if ( server . repl_backlog_time_limit < 0 ) { err = \"repl-backlog-ttl<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>negative<S2SV_blank>\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"masterauth\" ) && argc == 2 ) { zfree ( server . masterauth ) ; server . masterauth = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"slave-serve-stale-data\" ) && argc == 2 ) { if ( ( server . repl_serve_stale_data = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"slave-read-only\" ) && argc == 2 ) { if ( ( server . repl_slave_ro = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"rdbcompression\" ) && argc == 2 ) { if ( ( server . rdb_compression = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"rdbchecksum\" ) && argc == 2 ) { if ( ( server . rdb_checksum = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"activerehashing\" ) && argc == 2 ) { if ( ( server . activerehashing = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"lazyfree-lazy-eviction\" ) && argc == 2 ) { if ( ( server . lazyfree_lazy_eviction = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"lazyfree-lazy-expire\" ) && argc == 2 ) { if ( ( server . lazyfree_lazy_expire = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"lazyfree-lazy-server-del\" ) && argc == 2 ) { if ( ( server . lazyfree_lazy_server_del = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"slave-lazy-flush\" ) && argc == 2 ) { if ( ( server . repl_slave_lazy_flush = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"daemonize\" ) && argc == 2 ) { if ( ( server . daemonize = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"hz\" ) && argc == 2 ) { server . hz = atoi ( argv [ 1 ] ) ; if ( server . hz < CONFIG_MIN_HZ ) server . hz = CONFIG_MIN_HZ ; if ( server . hz > CONFIG_MAX_HZ ) server . hz = CONFIG_MAX_HZ ; } else if ( ! strcasecmp ( argv [ 0 ] , \"appendonly\" ) && argc == 2 ) { int yes ; if ( ( yes = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } server . aof_state = yes ? AOF_ON : AOF_OFF ; } else if ( ! strcasecmp ( argv [ 0 ] , \"appendfilename\" ) && argc == 2 ) { if ( ! pathIsBaseName ( argv [ 1 ] ) ) { err = \"appendfilename<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>a<S2SV_blank>path,<S2SV_blank>just<S2SV_blank>a<S2SV_blank>filename\" ; goto loaderr ; } zfree ( server . aof_filename ) ; server . aof_filename = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"no-appendfsync-on-rewrite\" ) && argc == 2 ) { if ( ( server . aof_no_fsync_on_rewrite = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"appendfsync\" ) && argc == 2 ) { server . aof_fsync = configEnumGetValue ( aof_fsync_enum , argv [ 1 ] ) ; if ( server . aof_fsync == INT_MIN ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'no\\',<S2SV_blank>\\'always\\'<S2SV_blank>or<S2SV_blank>\\'everysec\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"auto-aof-rewrite-percentage\" ) && argc == 2 ) { server . aof_rewrite_perc = atoi ( argv [ 1 ] ) ; if ( server . aof_rewrite_perc < 0 ) { err = \"Invalid<S2SV_blank>negative<S2SV_blank>percentage<S2SV_blank>for<S2SV_blank>AOF<S2SV_blank>auto<S2SV_blank>rewrite\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"auto-aof-rewrite-min-size\" ) && argc == 2 ) { server . aof_rewrite_min_size = memtoll ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"aof-rewrite-incremental-fsync\" ) && argc == 2 ) { if ( ( server . aof_rewrite_incremental_fsync = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"aof-load-truncated\" ) && argc == 2 ) { if ( ( server . aof_load_truncated = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"aof-use-rdb-preamble\" ) && argc == 2 ) { if ( ( server . aof_use_rdb_preamble = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"requirepass\" ) && argc == 2 ) { if ( strlen ( argv [ 1 ] ) > CONFIG_AUTHPASS_MAX_LEN ) { err = \"Password<S2SV_blank>is<S2SV_blank>longer<S2SV_blank>than<S2SV_blank>CONFIG_AUTHPASS_MAX_LEN\" ; goto loaderr ; } server . requirepass = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"pidfile\" ) && argc == 2 ) { zfree ( server . pidfile ) ; server . pidfile = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"dbfilename\" ) && argc == 2 ) { if ( ! pathIsBaseName ( argv [ 1 ] ) ) { err = \"dbfilename<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>a<S2SV_blank>path,<S2SV_blank>just<S2SV_blank>a<S2SV_blank>filename\" ; goto loaderr ; } zfree ( server . rdb_filename ) ; server . rdb_filename = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"hash-max-ziplist-entries\" ) && argc == 2 ) { server . hash_max_ziplist_entries = memtoll ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"hash-max-ziplist-value\" ) && argc == 2 ) { server . hash_max_ziplist_value = memtoll ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"list-max-ziplist-entries\" ) && argc == 2 ) { } else if ( ! strcasecmp ( argv [ 0 ] , \"list-max-ziplist-value\" ) && argc == 2 ) { } else if ( ! strcasecmp ( argv [ 0 ] , \"list-max-ziplist-size\" ) && argc == 2 ) { server . list_max_ziplist_size = atoi ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"list-compress-depth\" ) && argc == 2 ) { server . list_compress_depth = atoi ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"set-max-intset-entries\" ) && argc == 2 ) { server . set_max_intset_entries = memtoll ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"zset-max-ziplist-entries\" ) && argc == 2 ) { server . zset_max_ziplist_entries = memtoll ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"zset-max-ziplist-value\" ) && argc == 2 ) { server . zset_max_ziplist_value = memtoll ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"hll-sparse-max-bytes\" ) && argc == 2 ) { server . hll_sparse_max_bytes = memtoll ( argv [ 1 ] , NULL ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"rename-command\" ) && argc == 3 ) { struct redisCommand * cmd = lookupCommand ( argv [ 1 ] ) ; int retval ; if ( ! cmd ) { err = \"No<S2SV_blank>such<S2SV_blank>command<S2SV_blank>in<S2SV_blank>rename-command\" ; goto loaderr ; } retval = dictDelete ( server . commands , argv [ 1 ] ) ; serverAssert ( retval == DICT_OK ) ; if ( sdslen ( argv [ 2 ] ) != 0 ) { sds copy = sdsdup ( argv [ 2 ] ) ; retval = dictAdd ( server . commands , copy , cmd ) ; if ( retval != DICT_OK ) { sdsfree ( copy ) ; err = \"Target<S2SV_blank>command<S2SV_blank>name<S2SV_blank>already<S2SV_blank>exists\" ; goto loaderr ; } } } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-enabled\" ) && argc == 2 ) { if ( ( server . cluster_enabled = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-config-file\" ) && argc == 2 ) { zfree ( server . cluster_configfile ) ; server . cluster_configfile = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-announce-ip\" ) && argc == 2 ) { zfree ( server . cluster_announce_ip ) ; server . cluster_announce_ip = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-announce-port\" ) && argc == 2 ) { server . cluster_announce_port = atoi ( argv [ 1 ] ) ; if ( server . cluster_announce_port < 0 || server . cluster_announce_port > 65535 ) { err = \"Invalid<S2SV_blank>port\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-announce-bus-port\" ) && argc == 2 ) { server . cluster_announce_bus_port = atoi ( argv [ 1 ] ) ; if ( server . cluster_announce_bus_port < 0 || server . cluster_announce_bus_port > 65535 ) { err = \"Invalid<S2SV_blank>port\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-require-full-coverage\" ) && argc == 2 ) { if ( ( server . cluster_require_full_coverage = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-node-timeout\" ) && argc == 2 ) { server . cluster_node_timeout = strtoll ( argv [ 1 ] , NULL , 10 ) ; if ( server . cluster_node_timeout <= 0 ) { err = \"cluster<S2SV_blank>node<S2SV_blank>timeout<S2SV_blank>must<S2SV_blank>be<S2SV_blank>1<S2SV_blank>or<S2SV_blank>greater\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-migration-barrier\" ) && argc == 2 ) { server . cluster_migration_barrier = atoi ( argv [ 1 ] ) ; if ( server . cluster_migration_barrier < 0 ) { err = \"cluster<S2SV_blank>migration<S2SV_blank>barrier<S2SV_blank>must<S2SV_blank>zero<S2SV_blank>or<S2SV_blank>positive\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"cluster-slave-validity-factor\" ) && argc == 2 ) { server . cluster_slave_validity_factor = atoi ( argv [ 1 ] ) ; if ( server . cluster_slave_validity_factor < 0 ) { err = \"cluster<S2SV_blank>slave<S2SV_blank>validity<S2SV_blank>factor<S2SV_blank>must<S2SV_blank>be<S2SV_blank>zero<S2SV_blank>or<S2SV_blank>positive\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"lua-time-limit\" ) && argc == 2 ) { server . lua_time_limit = strtoll ( argv [ 1 ] , NULL , 10 ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"slowlog-log-slower-than\" ) && argc == 2 ) { server . slowlog_log_slower_than = strtoll ( argv [ 1 ] , NULL , 10 ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"latency-monitor-threshold\" ) && argc == 2 ) { server . latency_monitor_threshold = strtoll ( argv [ 1 ] , NULL , 10 ) ; if ( server . latency_monitor_threshold < 0 ) { err = \"The<S2SV_blank>latency<S2SV_blank>threshold<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>negative\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"slowlog-max-len\" ) && argc == 2 ) { server . slowlog_max_len = strtoll ( argv [ 1 ] , NULL , 10 ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"client-output-buffer-limit\" ) && argc == 5 ) { int class = getClientTypeByName ( argv [ 1 ] ) ; unsigned long long hard , soft ; int soft_seconds ; <S2SV_StartBug> if ( class == - 1 ) { <S2SV_EndBug> err = \"Unrecognized<S2SV_blank>client<S2SV_blank>limit<S2SV_blank>class\" ; goto loaderr ; } hard = memtoll ( argv [ 2 ] , NULL ) ; soft = memtoll ( argv [ 3 ] , NULL ) ; soft_seconds = atoi ( argv [ 4 ] ) ; if ( soft_seconds < 0 ) { err = \"Negative<S2SV_blank>number<S2SV_blank>of<S2SV_blank>seconds<S2SV_blank>in<S2SV_blank>soft<S2SV_blank>limit<S2SV_blank>is<S2SV_blank>invalid\" ; goto loaderr ; } server . client_obuf_limits [ class ] . hard_limit_bytes = hard ; server . client_obuf_limits [ class ] . soft_limit_bytes = soft ; server . client_obuf_limits [ class ] . soft_limit_seconds = soft_seconds ; } else if ( ! strcasecmp ( argv [ 0 ] , \"stop-writes-on-bgsave-error\" ) && argc == 2 ) { if ( ( server . stop_writes_on_bgsave_err = yesnotoi ( argv [ 1 ] ) ) == - 1 ) { err = \"argument<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"slave-priority\" ) && argc == 2 ) { server . slave_priority = atoi ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"slave-announce-ip\" ) && argc == 2 ) { zfree ( server . slave_announce_ip ) ; server . slave_announce_ip = zstrdup ( argv [ 1 ] ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"slave-announce-port\" ) && argc == 2 ) { server . slave_announce_port = atoi ( argv [ 1 ] ) ; if ( server . slave_announce_port < 0 || server . slave_announce_port > 65535 ) { err = \"Invalid<S2SV_blank>port\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"min-slaves-to-write\" ) && argc == 2 ) { server . repl_min_slaves_to_write = atoi ( argv [ 1 ] ) ; if ( server . repl_min_slaves_to_write < 0 ) { err = \"Invalid<S2SV_blank>value<S2SV_blank>for<S2SV_blank>min-slaves-to-write.\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"min-slaves-max-lag\" ) && argc == 2 ) { server . repl_min_slaves_max_lag = atoi ( argv [ 1 ] ) ; if ( server . repl_min_slaves_max_lag < 0 ) { err = \"Invalid<S2SV_blank>value<S2SV_blank>for<S2SV_blank>min-slaves-max-lag.\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"notify-keyspace-events\" ) && argc == 2 ) { int flags = keyspaceEventsStringToFlags ( argv [ 1 ] ) ; if ( flags == - 1 ) { err = \"Invalid<S2SV_blank>event<S2SV_blank>class<S2SV_blank>character.<S2SV_blank>Use<S2SV_blank>\\'g$lshzxeA\\'.\" ; goto loaderr ; } server . notify_keyspace_events = flags ; } else if ( ! strcasecmp ( argv [ 0 ] , \"supervised\" ) && argc == 2 ) { server . supervised_mode = configEnumGetValue ( supervised_mode_enum , argv [ 1 ] ) ; if ( server . supervised_mode == INT_MIN ) { err = \"Invalid<S2SV_blank>option<S2SV_blank>for<S2SV_blank>\\'supervised\\'.<S2SV_blank>\" \"Allowed<S2SV_blank>values:<S2SV_blank>\\'upstart\\',<S2SV_blank>\\'systemd\\',<S2SV_blank>\\'auto\\',<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; goto loaderr ; } } else if ( ! strcasecmp ( argv [ 0 ] , \"loadmodule\" ) && argc >= 2 ) { queueLoadModule ( argv [ 1 ] , & argv [ 2 ] , argc - 2 ) ; } else if ( ! strcasecmp ( argv [ 0 ] , \"sentinel\" ) ) { if ( argc != 1 ) { if ( ! server . sentinel_mode ) { err = \"sentinel<S2SV_blank>directive<S2SV_blank>while<S2SV_blank>not<S2SV_blank>in<S2SV_blank>sentinel<S2SV_blank>mode\" ; goto loaderr ; } err = sentinelHandleConfiguration ( argv + 1 , argc - 1 ) ; if ( err ) goto loaderr ; } } else { err = \"Bad<S2SV_blank>directive<S2SV_blank>or<S2SV_blank>wrong<S2SV_blank>number<S2SV_blank>of<S2SV_blank>arguments\" ; goto loaderr ; } sdsfreesplitres ( argv , argc ) ; } if ( server . cluster_enabled && server . masterhost ) { linenum = slaveof_linenum ; i = linenum - 1 ; err = \"slaveof<S2SV_blank>directive<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>in<S2SV_blank>cluster<S2SV_blank>mode\" ; goto loaderr ; } sdsfreesplitres ( lines , totlines ) ; return ; loaderr : fprintf ( stderr , \"\\\\n***<S2SV_blank>FATAL<S2SV_blank>CONFIG<S2SV_blank>FILE<S2SV_blank>ERROR<S2SV_blank>***\\\\n\" ) ; fprintf ( stderr , \"Reading<S2SV_blank>the<S2SV_blank>configuration<S2SV_blank>file,<S2SV_blank>at<S2SV_blank>line<S2SV_blank>%d\\\\n\" , linenum ) ; fprintf ( stderr , \">>><S2SV_blank>\\'%s\\'\\\\n\" , lines [ i ] ) ; fprintf ( stderr , \"%s\\\\n\" , err ) ; exit ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == - 1 || class == CLIENT_TYPE_MASTER ) { err = \"Unrecognized<S2SV_blank>client<S2SV_blank>limit<S2SV_blank>class:<S2SV_blank>the<S2SV_blank>user<S2SV_blank>specified<S2SV_blank>\" \"an<S2SV_blank>invalid<S2SV_blank>one,<S2SV_blank>or<S2SV_blank>\\'master\\'<S2SV_blank>which<S2SV_blank>has<S2SV_blank>no<S2SV_blank>buffer<S2SV_blank>limits.\" <S2SV_ModEnd> ; goto loaderr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10749\n\n```\nCWE-125 static const char * parse_string ( cJSON * item , const char * str , const char * * ep ) { const char * ptr = str + 1 , * end_ptr = str + 1 ; char * ptr2 ; char * out ; int len = 0 ; unsigned uc , uc2 ; if ( * str != \\'\\\\\"\\' ) { * ep = str ; return 0 ; } <S2SV_StartBug> while ( * end_ptr != \\'\\\\\"\\' && * end_ptr && ++ len ) if ( * end_ptr ++ == '\\\\\\\\' ) end_ptr ++ ; <S2SV_EndBug> out = ( char * ) cJSON_malloc ( len + 1 ) ; if ( ! out ) return 0 ; item -> valuestring = out ; item -> type = cJSON_String ; ptr = str + 1 ; ptr2 = out ; while ( ptr < end_ptr ) { if ( * ptr != '\\\\\\\\' ) * ptr2 ++ = * ptr ++ ; else { ptr ++ ; switch ( * ptr ) { case 'b' : * ptr2 ++ = '\\\\b' ; break ; case 'f' : * ptr2 ++ = '\\\\f' ; break ; case 'n' : * ptr2 ++ = '\\\\n' ; break ; case 'r' : * ptr2 ++ = '\\\\r' ; break ; case 't' : * ptr2 ++ = '\\\\t' ; break ; case 'u' : uc = parse_hex4 ( ptr + 1 ) ; ptr += 4 ; if ( ptr >= end_ptr ) { * ep = str ; return 0 ; } if ( ( uc >= 0xDC00 && uc <= 0xDFFF ) || uc == 0 ) { * ep = str ; return 0 ; } if ( uc >= 0xD800 && uc <= 0xDBFF ) { if ( ptr + 6 > end_ptr ) { * ep = str ; return 0 ; } if ( ptr [ 1 ] != '\\\\\\\\' || ptr [ 2 ] != 'u' ) { * ep = str ; return 0 ; } uc2 = parse_hex4 ( ptr + 3 ) ; ptr += 6 ; if ( uc2 < 0xDC00 || uc2 > 0xDFFF ) { * ep = str ; return 0 ; } uc = 0x10000 + ( ( ( uc & 0x3FF ) << 10 ) | ( uc2 & 0x3FF ) ) ; } len = 4 ; if ( uc < 0x80 ) len = 1 ; else if ( uc < 0x800 ) len = 2 ; else if ( uc < 0x10000 ) len = 3 ; ptr2 += len ; switch ( len ) { case 4 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 3 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 2 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 1 : * -- ptr2 = ( uc | firstByteMark [ len ] ) ; } ptr2 += len ; break ; default : * ptr2 ++ = * ptr ; break ; } ptr ++ ; } } * ptr2 = 0 ; if ( * ptr == \\'\\\\\"\\' ) ptr ++ ; return ptr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ len ) { <S2SV_ModStart> == '\\\\\\\\' ) { if ( * end_ptr == '\\\\0' ) { return 0 ; } end_ptr ++ ; } } <S2SV_ModEnd> out = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6214\n\n```\nCWE-835 ssize_t tcp_splice_read ( struct socket * sock , loff_t * ppos , struct pipe_inode_info * pipe , size_t len , unsigned int flags ) { struct sock * sk = sock -> sk ; struct tcp_splice_state tss = { . pipe = pipe , . len = len , . flags = flags , } ; long timeo ; ssize_t spliced ; int ret ; sock_rps_record_flow ( sk ) ; if ( unlikely ( * ppos ) ) return - ESPIPE ; ret = spliced = 0 ; lock_sock ( sk ) ; timeo = sock_rcvtimeo ( sk , sock -> file -> f_flags & O_NONBLOCK ) ; while ( tss . len ) { ret = __tcp_splice_read ( sk , & tss ) ; if ( ret < 0 ) break ; else if ( ! ret ) { if ( spliced ) break ; if ( sock_flag ( sk , SOCK_DONE ) ) break ; if ( sk -> sk_err ) { ret = sock_error ( sk ) ; break ; } if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; if ( sk -> sk_state == TCP_CLOSE ) { if ( ! sock_flag ( sk , SOCK_DONE ) ) ret = - ENOTCONN ; break ; } if ( ! timeo ) { ret = - EAGAIN ; break ; } <S2SV_StartBug> sk_wait_data ( sk , & timeo , NULL ) ; <S2SV_EndBug> if ( signal_pending ( current ) ) { ret = sock_intr_errno ( timeo ) ; break ; } continue ; } tss . len -= ret ; spliced += ret ; if ( ! timeo ) break ; release_sock ( sk ) ; lock_sock ( sk ) ; if ( sk -> sk_err || sk -> sk_state == TCP_CLOSE || ( sk -> sk_shutdown & RCV_SHUTDOWN ) || signal_pending ( current ) ) break ; } release_sock ( sk ) ; if ( spliced ) return spliced ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } if ( ! skb_queue_empty ( & sk -> sk_receive_queue ) ) break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4014\n\n```\nCWE-264 bool inode_owner_or_capable ( const struct inode * inode ) <S2SV_StartBug> { <S2SV_EndBug> if ( uid_eq ( current_fsuid ( ) , inode -> i_uid ) ) return true ; <S2SV_StartBug> if ( inode_capable ( inode , CAP_FOWNER ) ) <S2SV_EndBug> return true ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode ) { struct user_namespace * ns ; <S2SV_ModStart> return true ; ns = current_user_ns ( ) ; if ( ns_capable ( ns , CAP_FOWNER ) && kuid_has_mapping ( ns , inode -> i_uid <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 long FS_FOpenFileRead ( const char * filename , fileHandle_t * file , qboolean uniqueFILE ) { searchpath_t * search ; long len ; <S2SV_StartBug> if ( ! fs_searchpaths ) <S2SV_EndBug> Com_Error ( ERR_FATAL , \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; <S2SV_StartBug> for ( search = fs_searchpaths ; search ; search = search -> next ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> len = FS_FOpenFileReadDir ( filename , search , file , uniqueFILE , qfalse ) ; if ( file == NULL ) { if ( len > 0 ) return len ; } else { if ( len >= 0 && * file ) return len ; } } # ifdef FS_MISSING if ( missingFiles ) fprintf ( missingFiles , \"%s\\\\n\" , filename ) ; # endif if ( file ) { * file = 0 ; return - 1 ; } else { return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long len ; qboolean isLocalConfig ; <S2SV_ModStart> \"Filesystem<S2SV_blank>call<S2SV_blank>made<S2SV_blank>without<S2SV_blank>initialization\" ) ; isLocalConfig = ! strcmp ( filename , \"autoexec.cfg\" ) || ! strcmp ( filename , Q3CONFIG_CFG ) ; <S2SV_ModStart> next ) { if ( isLocalConfig && search -> pack ) continue ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void write_profile ( BITSTREAM_PROFILE profile , <S2SV_StartBug> struct vp9_write_bit_buffer * wb ) { <S2SV_EndBug> <S2SV_StartBug> assert ( profile < MAX_PROFILES ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_bit ( wb , profile & 1 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_bit ( wb , profile >> 1 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> profile , struct vpx_write_bit_buffer <S2SV_ModEnd> * wb ) <S2SV_ModStart> wb ) { switch ( profile ) { case PROFILE_0 : vpx_wb_write_literal ( wb , 0 , 2 ) ; break ; case PROFILE_1 : vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> ( wb , 2 , 2 ) ; break ; case PROFILE_2 : vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> ( wb , 1 , 2 ) ; break ; case PROFILE_3 : vpx_wb_write_literal ( wb , 6 , 3 ) ; break ; default : assert ( 0 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static bool check_underflow ( const struct arpt_entry * e ) { const struct xt_entry_target * t ; unsigned int verdict ; <S2SV_StartBug> if ( ! unconditional ( & e -> arp ) ) <S2SV_EndBug> return false ; t = arpt_get_target_c ( e ) ; if ( strcmp ( t -> u . user . name , XT_STANDARD_TARGET ) != 0 ) return false ; verdict = ( ( struct xt_standard_target * ) t ) -> verdict ; verdict = - verdict - 1 ; return verdict == NF_DROP || verdict == NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! unconditional ( e <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6031\n\n```\nCWE-119 void IGDstartelt ( void * d , const char * name , int l ) { <S2SV_StartBug> struct IGDdatas * datas = ( struct IGDdatas * ) d ; <S2SV_EndBug> memcpy ( datas -> cureltname , name , l ) ; datas -> cureltname [ l ] = '\\\\0' ; datas -> level ++ ; if ( ( l == 7 ) && ! memcmp ( name , \"service\" , l ) ) { datas -> tmp . controlurl [ 0 ] = '\\\\0' ; datas -> tmp . eventsuburl [ 0 ] = '\\\\0' ; datas -> tmp . scpdurl [ 0 ] = '\\\\0' ; datas -> tmp . servicetype [ 0 ] = '\\\\0' ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ) d ; if ( l >= MINIUPNPC_URL_MAXSIZE ) l = MINIUPNPC_URL_MAXSIZE - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyMODINIT_FUNC PyInit__ast ( void ) { PyObject * m , * d ; if ( ! init_types ( ) ) return NULL ; m = PyModule_Create ( & _astmodule ) ; if ( ! m ) return NULL ; d = PyModule_GetDict ( m ) ; if ( PyDict_SetItemString ( d , \"AST\" , ( PyObject * ) & AST_type ) < 0 ) return NULL ; if ( PyModule_AddIntMacro ( m , PyCF_ONLY_AST ) < 0 ) return NULL ; <S2SV_StartBug> if ( PyDict_SetItemString ( d , \"mod\" , ( PyObject * ) mod_type ) < 0 ) return NULL ; <S2SV_EndBug> if ( PyDict_SetItemString ( d , \"Module\" , ( PyObject * ) Module_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Interactive\" , ( PyObject * ) Interactive_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Expression\" , ( PyObject * ) Expression_type ) < 0 ) return NULL ; <S2SV_StartBug> if ( PyDict_SetItemString ( d , \"Suite\" , ( PyObject * ) Suite_type ) < 0 ) return <S2SV_EndBug> NULL ; if ( PyDict_SetItemString ( d , \"stmt\" , ( PyObject * ) stmt_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"FunctionDef\" , ( PyObject * ) FunctionDef_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AsyncFunctionDef\" , ( PyObject * ) AsyncFunctionDef_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ClassDef\" , ( PyObject * ) ClassDef_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Return\" , ( PyObject * ) Return_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Delete\" , ( PyObject * ) Delete_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Assign\" , ( PyObject * ) Assign_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AugAssign\" , ( PyObject * ) AugAssign_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AnnAssign\" , ( PyObject * ) AnnAssign_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"For\" , ( PyObject * ) For_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AsyncFor\" , ( PyObject * ) AsyncFor_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"While\" , ( PyObject * ) While_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"If\" , ( PyObject * ) If_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"With\" , ( PyObject * ) With_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AsyncWith\" , ( PyObject * ) AsyncWith_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Raise\" , ( PyObject * ) Raise_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Try\" , ( PyObject * ) Try_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Assert\" , ( PyObject * ) Assert_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Import\" , ( PyObject * ) Import_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ImportFrom\" , ( PyObject * ) ImportFrom_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Global\" , ( PyObject * ) Global_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Nonlocal\" , ( PyObject * ) Nonlocal_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Expr\" , ( PyObject * ) Expr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Pass\" , ( PyObject * ) Pass_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Break\" , ( PyObject * ) Break_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Continue\" , ( PyObject * ) Continue_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"expr\" , ( PyObject * ) expr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BoolOp\" , ( PyObject * ) BoolOp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"NamedExpr\" , ( PyObject * ) NamedExpr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BinOp\" , ( PyObject * ) BinOp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"UnaryOp\" , ( PyObject * ) UnaryOp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Lambda\" , ( PyObject * ) Lambda_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"IfExp\" , ( PyObject * ) IfExp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Dict\" , ( PyObject * ) Dict_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Set\" , ( PyObject * ) Set_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ListComp\" , ( PyObject * ) ListComp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"SetComp\" , ( PyObject * ) SetComp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"DictComp\" , ( PyObject * ) DictComp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"GeneratorExp\" , ( PyObject * ) GeneratorExp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Await\" , ( PyObject * ) Await_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Yield\" , ( PyObject * ) Yield_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"YieldFrom\" , ( PyObject * ) YieldFrom_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Compare\" , ( PyObject * ) Compare_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Call\" , ( PyObject * ) Call_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"FormattedValue\" , ( PyObject * ) FormattedValue_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"JoinedStr\" , ( PyObject * ) JoinedStr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Constant\" , ( PyObject * ) Constant_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Attribute\" , ( PyObject * ) Attribute_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Subscript\" , ( PyObject * ) Subscript_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Starred\" , ( PyObject * ) Starred_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Name\" , ( PyObject * ) Name_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"List\" , ( PyObject * ) List_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Tuple\" , ( PyObject * ) Tuple_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"expr_context\" , ( PyObject * ) expr_context_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Load\" , ( PyObject * ) Load_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Store\" , ( PyObject * ) Store_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Del\" , ( PyObject * ) Del_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AugLoad\" , ( PyObject * ) AugLoad_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AugStore\" , ( PyObject * ) AugStore_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Param\" , ( PyObject * ) Param_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"NamedStore\" , ( PyObject * ) NamedStore_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"slice\" , ( PyObject * ) slice_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Slice\" , ( PyObject * ) Slice_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ExtSlice\" , ( PyObject * ) ExtSlice_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Index\" , ( PyObject * ) Index_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"boolop\" , ( PyObject * ) boolop_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"And\" , ( PyObject * ) And_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Or\" , ( PyObject * ) Or_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"operator\" , ( PyObject * ) operator_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Add\" , ( PyObject * ) Add_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Sub\" , ( PyObject * ) Sub_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Mult\" , ( PyObject * ) Mult_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"MatMult\" , ( PyObject * ) MatMult_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Div\" , ( PyObject * ) Div_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Mod\" , ( PyObject * ) Mod_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Pow\" , ( PyObject * ) Pow_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"LShift\" , ( PyObject * ) LShift_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"RShift\" , ( PyObject * ) RShift_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BitOr\" , ( PyObject * ) BitOr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BitXor\" , ( PyObject * ) BitXor_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BitAnd\" , ( PyObject * ) BitAnd_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"FloorDiv\" , ( PyObject * ) FloorDiv_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"unaryop\" , ( PyObject * ) unaryop_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Invert\" , ( PyObject * ) Invert_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Not\" , ( PyObject * ) Not_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"UAdd\" , ( PyObject * ) UAdd_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"USub\" , ( PyObject * ) USub_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"cmpop\" , ( PyObject * ) cmpop_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Eq\" , ( PyObject * ) Eq_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"NotEq\" , ( PyObject * ) NotEq_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Lt\" , ( PyObject * ) Lt_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"LtE\" , ( PyObject * ) LtE_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Gt\" , ( PyObject * ) Gt_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"GtE\" , ( PyObject * ) GtE_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Is\" , ( PyObject * ) Is_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"IsNot\" , ( PyObject * ) IsNot_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"In\" , ( PyObject * ) In_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"NotIn\" , ( PyObject * ) NotIn_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"comprehension\" , ( PyObject * ) comprehension_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"excepthandler\" , ( PyObject * ) excepthandler_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ExceptHandler\" , ( PyObject * ) ExceptHandler_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"arguments\" , ( PyObject * ) arguments_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"arg\" , ( PyObject * ) arg_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"keyword\" , ( PyObject * ) keyword_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"alias\" , ( PyObject * ) alias_type ) < 0 ) return NULL ; <S2SV_StartBug> if ( PyDict_SetItemString ( d , \"withitem\" , ( PyObject * ) withitem_type ) < 0 ) <S2SV_EndBug> return NULL ; return m ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( PyModule_AddIntMacro ( m , PyCF_TYPE_COMMENTS ) < 0 ) return NULL ; if ( <S2SV_ModStart> ( d , \"FunctionType\" , ( PyObject * ) FunctionType_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , <S2SV_ModStart> * ) withitem_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"type_ignore\" , ( PyObject * ) type_ignore_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"TypeIgnore\" , ( PyObject * ) TypeIgnore_type\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8871\n\n```\nCWE-416 static OPJ_BOOL opj_j2k_write_mco ( opj_j2k_t * p_j2k , struct opj_stream_private * p_stream , struct opj_event_mgr * p_manager ) { OPJ_BYTE * l_current_data = 00 ; OPJ_UINT32 l_mco_size ; opj_tcp_t * l_tcp = 00 ; opj_simple_mcc_decorrelation_data_t * l_mcc_record ; OPJ_UINT32 i ; assert ( p_j2k != 00 ) ; assert ( p_manager != 00 ) ; assert ( p_stream != 00 ) ; l_tcp = & ( p_j2k -> m_cp . tcps [ p_j2k -> m_current_tile_number ] ) ; <S2SV_StartBug> l_current_data = p_j2k -> m_specific_param . m_encoder . m_header_tile_data ; <S2SV_EndBug> l_mco_size = 5 + l_tcp -> m_nb_mcc_records ; if ( l_mco_size > p_j2k -> m_specific_param . m_encoder . m_header_tile_data_size ) { OPJ_BYTE * new_header_tile_data = ( OPJ_BYTE * ) opj_realloc ( p_j2k -> m_specific_param . m_encoder . m_header_tile_data , l_mco_size ) ; if ( ! new_header_tile_data ) { opj_free ( p_j2k -> m_specific_param . m_encoder . m_header_tile_data ) ; p_j2k -> m_specific_param . m_encoder . m_header_tile_data = NULL ; p_j2k -> m_specific_param . m_encoder . m_header_tile_data_size = 0 ; opj_event_msg ( p_manager , EVT_ERROR , \"Not<S2SV_blank>enough<S2SV_blank>memory<S2SV_blank>to<S2SV_blank>write<S2SV_blank>MCO<S2SV_blank>marker\\\\n\" ) ; return OPJ_FALSE ; } p_j2k -> m_specific_param . m_encoder . m_header_tile_data = new_header_tile_data ; p_j2k -> m_specific_param . m_encoder . m_header_tile_data_size = l_mco_size ; } <S2SV_StartBug> opj_write_bytes ( l_current_data , J2K_MS_MCO , 2 ) ; <S2SV_EndBug> l_current_data += 2 ; opj_write_bytes ( l_current_data , l_mco_size - 2 , 2 ) ; l_current_data += 2 ; opj_write_bytes ( l_current_data , l_tcp -> m_nb_mcc_records , 1 ) ; ++ l_current_data ; l_mcc_record = l_tcp -> m_mcc_records ; for ( i = 0 ; i < l_tcp -> m_nb_mcc_records ; ++ i ) { opj_write_bytes ( l_current_data , l_mcc_record -> m_index , 1 ) ; ++ l_current_data ; ++ l_mcc_record ; } if ( opj_stream_write_data ( p_stream , p_j2k -> m_specific_param . m_encoder . m_header_tile_data , l_mco_size , p_manager ) != l_mco_size ) { return OPJ_FALSE ; } return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; <S2SV_ModEnd> l_mco_size = 5 <S2SV_ModStart> l_mco_size ; } l_current_data = p_j2k -> m_specific_param . m_encoder . m_header_tile_data ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11412\n\n```\nCWE-119 static void ctrycatchfinally ( JF , js_Ast * trystm , js_Ast * catchvar , js_Ast * catchstm , js_Ast * finallystm ) { int L1 , L2 , L3 ; L1 = emitjump ( J , F , OP_TRY ) ; { L2 = emitjump ( J , F , OP_TRY ) ; { cstm ( J , F , finallystm ) ; emit ( J , F , OP_THROW ) ; } label ( J , F , L2 ) ; if ( F -> strict ) { checkfutureword ( J , F , catchvar ) ; if ( ! strcmp ( catchvar -> string , \"arguments\" ) ) jsC_error ( J , catchvar , \"redefining<S2SV_blank>\\'arguments\\'<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>in<S2SV_blank>strict<S2SV_blank>mode\" ) ; if ( ! strcmp ( catchvar -> string , \"eval\" ) ) jsC_error ( J , catchvar , \"redefining<S2SV_blank>\\'eval\\'<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>in<S2SV_blank>strict<S2SV_blank>mode\" ) ; } emitline ( J , F , catchvar ) ; emitstring ( J , F , OP_CATCH , catchvar -> string ) ; cstm ( J , F , catchstm ) ; emit ( J , F , OP_ENDCATCH ) ; <S2SV_StartBug> L3 = emitjump ( J , F , OP_JUMP ) ; <S2SV_EndBug> } label ( J , F , L1 ) ; cstm ( J , F , trystm ) ; emit ( J , F , OP_ENDTRY ) ; label ( J , F , L3 ) ; cstm ( J , F , finallystm ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> OP_ENDCATCH ) ; emit ( J , F , OP_ENDTRY ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 struct lookahead_ctx * vp9_lookahead_init ( unsigned int width , unsigned int height , unsigned int subsampling_x , unsigned int subsampling_y , <S2SV_StartBug> unsigned int depth ) { <S2SV_EndBug> struct lookahead_ctx * ctx = NULL ; depth = clamp ( depth , 1 , MAX_LAG_BUFFERS ) ; depth += MAX_PRE_FRAMES ; ctx = calloc ( 1 , sizeof ( * ctx ) ) ; if ( ctx ) { <S2SV_StartBug> unsigned int i ; <S2SV_EndBug> ctx -> max_sz = depth ; ctx -> buf = calloc ( depth , sizeof ( * ctx -> buf ) ) ; if ( ! ctx -> buf ) goto bail ; for ( i = 0 ; i < depth ; i ++ ) <S2SV_StartBug> if ( vp9_alloc_frame_buffer ( & ctx -> buf [ i ] . img , <S2SV_EndBug> width , height , subsampling_x , subsampling_y , <S2SV_StartBug> VP9_ENC_BORDER_IN_PIXELS ) ) <S2SV_EndBug> goto bail ; } return ctx ; bail : vp9_lookahead_destroy ( ctx ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int subsampling_y , # if CONFIG_VP9_HIGHBITDEPTH int use_highbitdepth , # endif <S2SV_ModStart> ctx ) { const int legacy_byte_alignment = 0 ; <S2SV_ModStart> ) if ( vpx_alloc_frame_buffer <S2SV_ModEnd> ( & ctx <S2SV_ModStart> , subsampling_y , # if CONFIG_VP9_HIGHBITDEPTH use_highbitdepth , # endif VP9_ENC_BORDER_IN_PIXELS , legacy_byte_alignment <S2SV_ModEnd> ) ) goto\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19045\n\n```\nCWE-401 static int mlx5_fpga_conn_create_cq ( struct mlx5_fpga_conn * conn , int cq_size ) { struct mlx5_fpga_device * fdev = conn -> fdev ; struct mlx5_core_dev * mdev = fdev -> mdev ; u32 temp_cqc [ MLX5_ST_SZ_DW ( cqc ) ] = { 0 } ; u32 out [ MLX5_ST_SZ_DW ( create_cq_out ) ] ; struct mlx5_wq_param wqp ; struct mlx5_cqe64 * cqe ; int inlen , err , eqn ; unsigned int irqn ; void * cqc , * in ; __be64 * pas ; u32 i ; cq_size = roundup_pow_of_two ( cq_size ) ; MLX5_SET ( cqc , temp_cqc , log_cq_size , ilog2 ( cq_size ) ) ; wqp . buf_numa_node = mdev -> priv . numa_node ; wqp . db_numa_node = mdev -> priv . numa_node ; err = mlx5_cqwq_create ( mdev , & wqp , temp_cqc , & conn -> cq . wq , & conn -> cq . wq_ctrl ) ; if ( err ) return err ; for ( i = 0 ; i < mlx5_cqwq_get_size ( & conn -> cq . wq ) ; i ++ ) { cqe = mlx5_cqwq_get_wqe ( & conn -> cq . wq , i ) ; cqe -> op_own = MLX5_CQE_INVALID << 4 | MLX5_CQE_OWNER_MASK ; } inlen = MLX5_ST_SZ_BYTES ( create_cq_in ) + sizeof ( u64 ) * conn -> cq . wq_ctrl . buf . npages ; in = kvzalloc ( inlen , GFP_KERNEL ) ; if ( ! in ) { err = - ENOMEM ; goto err_cqwq ; } err = mlx5_vector2eqn ( mdev , smp_processor_id ( ) , & eqn , & irqn ) ; <S2SV_StartBug> if ( err ) <S2SV_EndBug> <S2SV_StartBug> goto err_cqwq ; <S2SV_EndBug> cqc = MLX5_ADDR_OF ( create_cq_in , in , cq_context ) ; MLX5_SET ( cqc , cqc , log_cq_size , ilog2 ( cq_size ) ) ; MLX5_SET ( cqc , cqc , c_eqn , eqn ) ; MLX5_SET ( cqc , cqc , uar_page , fdev -> conn_res . uar -> index ) ; MLX5_SET ( cqc , cqc , log_page_size , conn -> cq . wq_ctrl . buf . page_shift - MLX5_ADAPTER_PAGE_SHIFT ) ; MLX5_SET64 ( cqc , cqc , dbr_addr , conn -> cq . wq_ctrl . db . dma ) ; pas = ( __be64 * ) MLX5_ADDR_OF ( create_cq_in , in , pas ) ; mlx5_fill_page_frag_array ( & conn -> cq . wq_ctrl . buf , pas ) ; err = mlx5_core_create_cq ( mdev , & conn -> cq . mcq , in , inlen , out , sizeof ( out ) ) ; kvfree ( in ) ; if ( err ) goto err_cqwq ; conn -> cq . mcq . cqe_sz = 64 ; conn -> cq . mcq . set_ci_db = conn -> cq . wq_ctrl . db . db ; conn -> cq . mcq . arm_db = conn -> cq . wq_ctrl . db . db + 1 ; * conn -> cq . mcq . set_ci_db = 0 ; * conn -> cq . mcq . arm_db = 0 ; conn -> cq . mcq . vector = 0 ; conn -> cq . mcq . comp = mlx5_fpga_conn_cq_complete ; conn -> cq . mcq . event = mlx5_fpga_conn_cq_event ; conn -> cq . mcq . irqn = irqn ; conn -> cq . mcq . uar = fdev -> conn_res . uar ; tasklet_init ( & conn -> cq . tasklet , mlx5_fpga_conn_cq_tasklet , ( unsigned long ) conn ) ; mlx5_fpga_dbg ( fdev , \"Created<S2SV_blank>CQ<S2SV_blank>#0x%x\\\\n\" , conn -> cq . mcq . cqn ) ; goto out ; err_cqwq : mlx5_wq_destroy ( & conn -> cq . wq_ctrl ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( err ) { kvfree ( in ) ; <S2SV_ModStart> goto err_cqwq ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4129\n\n```\nCWE-20 static int __br_mdb_del ( struct net_bridge * br , struct br_mdb_entry * entry ) { struct net_bridge_mdb_htable * mdb ; struct net_bridge_mdb_entry * mp ; struct net_bridge_port_group * p ; struct net_bridge_port_group __rcu * * pp ; struct br_ip ip ; int err = - EINVAL ; if ( ! netif_running ( br -> dev ) || br -> multicast_disabled ) return - EINVAL ; if ( timer_pending ( & br -> multicast_querier_timer ) ) return - EBUSY ; ip . proto = entry -> addr . proto ; if ( ip . proto == htons ( ETH_P_IP ) ) ip . u . ip4 = entry -> addr . u . ip4 ; # if IS_ENABLED ( CONFIG_IPV6 ) else ip . u . ip6 = entry -> addr . u . ip6 ; # endif spin_lock_bh ( & br -> multicast_lock ) ; mdb = mlock_dereference ( br -> mdb , br ) ; mp = br_mdb_ip_get ( mdb , & ip ) ; if ( ! mp ) goto unlock ; for ( pp = & mp -> ports ; ( p = mlock_dereference ( * pp , br ) ) != NULL ; pp = & p -> next ) { if ( ! p -> port || p -> port -> dev -> ifindex != entry -> ifindex ) continue ; if ( p -> port -> state == BR_STATE_DISABLED ) goto unlock ; rcu_assign_pointer ( * pp , p -> next ) ; hlist_del_init ( & p -> mglist ) ; del_timer ( & p -> timer ) ; call_rcu_bh ( & p -> rcu , br_multicast_free_pg ) ; err = 0 ; <S2SV_StartBug> if ( ! mp -> ports && ! mp -> mglist && <S2SV_EndBug> netif_running ( br -> dev ) ) mod_timer ( & mp -> timer , jiffies ) ; break ; } unlock : spin_unlock_bh ( & br -> multicast_lock ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> mglist && mp -> timer_armed &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20854\n\n```\nCWE-125 static int serdes_probe ( struct platform_device * pdev ) { struct phy_provider * provider ; struct serdes_ctrl * ctrl ; unsigned int i ; int ret ; ctrl = devm_kzalloc ( & pdev -> dev , sizeof ( * ctrl ) , GFP_KERNEL ) ; if ( ! ctrl ) return - ENOMEM ; ctrl -> dev = & pdev -> dev ; ctrl -> regs = syscon_node_to_regmap ( pdev -> dev . parent -> of_node ) ; if ( IS_ERR ( ctrl -> regs ) ) return PTR_ERR ( ctrl -> regs ) ; <S2SV_StartBug> for ( i = 0 ; i <= SERDES_MAX ; i ++ ) { <S2SV_EndBug> ret = serdes_phy_create ( ctrl , i , & ctrl -> phys [ i ] ) ; if ( ret ) return ret ; } dev_set_drvdata ( & pdev -> dev , ctrl ) ; provider = devm_of_phy_provider_register ( ctrl -> dev , serdes_simple_xlate ) ; return PTR_ERR_OR_ZERO ( provider ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; i < <S2SV_ModEnd> SERDES_MAX ; i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 <S2SV_StartBug> static ext4_io_end_t * ext4_init_io_end ( struct inode * inode ) <S2SV_EndBug> { ext4_io_end_t * io = NULL ; <S2SV_StartBug> io = kmalloc ( sizeof ( * io ) , GFP_NOFS ) ; <S2SV_EndBug> if ( io ) { igrab ( inode ) ; io -> inode = inode ; io -> flag = 0 ; io -> offset = 0 ; io -> size = 0 ; <S2SV_StartBug> io -> error = 0 ; <S2SV_EndBug> INIT_WORK ( & io -> work , ext4_end_io_work ) ; INIT_LIST_HEAD ( & io -> list ) ; } return io ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode * inode , gfp_t flags <S2SV_ModStart> io ) , flags <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; io -> page = NULL <S2SV_ModEnd> ; INIT_WORK (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17546\n\n```\nCWE-787 static int gtStripContig ( TIFFRGBAImage * img , uint32 * raster , uint32 w , uint32 h ) { TIFF * tif = img -> tif ; tileContigRoutine put = img -> put . contig ; uint32 row , y , nrow , nrowsub , rowstoread ; tmsize_t pos ; unsigned char * buf = NULL ; uint32 rowsperstrip ; uint16 subsamplinghor , subsamplingver ; uint32 imagewidth = img -> width ; tmsize_t scanline ; int32 fromskew , toskew ; int ret = 1 , flip ; tmsize_t maxstripsize ; TIFFGetFieldDefaulted ( tif , TIFFTAG_YCBCRSUBSAMPLING , & subsamplinghor , & subsamplingver ) ; if ( subsamplingver == 0 ) { TIFFErrorExt ( tif -> tif_clientdata , TIFFFileName ( tif ) , \"Invalid<S2SV_blank>vertical<S2SV_blank>YCbCr<S2SV_blank>subsampling\" ) ; return ( 0 ) ; } maxstripsize = TIFFStripSize ( tif ) ; flip = setorientation ( img ) ; if ( flip & FLIP_VERTICALLY ) { y = h - 1 ; toskew = - ( int32 ) ( w + w ) ; } else { y = 0 ; toskew = - ( int32 ) ( w - w ) ; } TIFFGetFieldDefaulted ( tif , TIFFTAG_ROWSPERSTRIP , & rowsperstrip ) ; scanline = TIFFScanlineSize ( tif ) ; fromskew = ( w < imagewidth ? imagewidth - w : 0 ) ; for ( row = 0 ; row < h ; row += nrow ) <S2SV_StartBug> { <S2SV_EndBug> rowstoread = rowsperstrip - ( row + img -> row_offset ) % rowsperstrip ; nrow = ( row + rowstoread > h ? h - row : rowstoread ) ; nrowsub = nrow ; if ( ( nrowsub % subsamplingver ) != 0 ) nrowsub += subsamplingver - nrowsub % subsamplingver ; <S2SV_StartBug> if ( _TIFFReadEncodedStripAndAllocBuffer ( tif , <S2SV_EndBug> TIFFComputeStrip ( tif , row + img -> row_offset , 0 ) , ( void * * ) ( & buf ) , maxstripsize , <S2SV_StartBug> ( ( row + img -> row_offset ) % rowsperstrip + nrowsub ) * scanline ) == ( tmsize_t ) ( - 1 ) <S2SV_EndBug> && ( buf == NULL || img -> stoponerr ) ) { ret = 0 ; break ; } pos = ( ( row + img -> row_offset ) % rowsperstrip ) * scanline + ( ( tmsize_t ) img -> col_offset * img -> samplesperpixel ) ; ( * put ) ( img , raster + y * w , 0 , y , w , nrow , fromskew , toskew , buf + pos ) ; y += ( ( flip & FLIP_VERTICALLY ) ? - ( int32 ) nrow : ( int32 ) nrow ) ; } if ( flip & FLIP_HORIZONTALLY ) { uint32 line ; for ( line = 0 ; line < h ; line ++ ) { uint32 * left = raster + ( line * w ) ; uint32 * right = left + w - 1 ; while ( left < right ) { uint32 temp = * left ; * left = * right ; * right = temp ; left ++ ; right -- ; } } } _TIFFfree ( buf ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nrow ) { uint32 temp ; <S2SV_ModStart> % subsamplingver ; temp = ( row + img -> row_offset ) % rowsperstrip + nrowsub ; if ( scanline > 0 && temp > ( size_t ) ( TIFF_TMSIZE_T_MAX / scanline ) ) { TIFFErrorExt ( tif -> tif_clientdata , TIFFFileName ( tif ) , \"Integer<S2SV_blank>overflow<S2SV_blank>in<S2SV_blank>gtStripContig\" ) ; return 0 ; } <S2SV_ModStart> , maxstripsize , temp <S2SV_ModEnd> * scanline )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7294\n\n```\nCWE-20 static void ikev2_parent_inI2outR2_continue ( struct pluto_crypto_req_cont * pcrc , struct pluto_crypto_req * r , err_t ugh ) { struct dh_continuation * dh = ( struct dh_continuation * ) pcrc ; struct msg_digest * md = dh -> md ; struct state * const st = md -> st ; stf_status e ; DBG ( DBG_CONTROLMORE , DBG_log ( \"ikev2<S2SV_blank>parent<S2SV_blank>inI2outR2:<S2SV_blank>calculating<S2SV_blank>g^{xy},<S2SV_blank>sending<S2SV_blank>R2\" ) ) ; if ( st == NULL ) { loglog ( RC_LOG_SERIOUS , \"%s:<S2SV_blank>Request<S2SV_blank>was<S2SV_blank>disconnected<S2SV_blank>from<S2SV_blank>state\" , __FUNCTION__ ) ; if ( dh -> md ) release_md ( dh -> md ) ; return ; } passert ( ugh == NULL ) ; passert ( cur_state == NULL ) ; passert ( st != NULL ) ; passert ( st -> st_suspended_md == dh -> md ) ; set_suspended ( st , NULL ) ; set_cur_state ( st ) ; st -> st_calculating = FALSE ; e = ikev2_parent_inI2outR2_tail ( pcrc , r ) ; if ( e > STF_FAIL ) { int v2_notify_num = e - STF_FAIL ; DBG_log ( \"ikev2_parent_inI2outR2_tail<S2SV_blank>returned<S2SV_blank>STF_FAIL<S2SV_blank>with<S2SV_blank>%s\" , enum_name ( & ikev2_notify_names , v2_notify_num ) ) ; } else if ( e != STF_OK ) { DBG_log ( \"ikev2_parent_inI2outR2_tail<S2SV_blank>returned<S2SV_blank>%s\" , enum_name ( & stfstatus_name , e ) ) ; } if ( dh -> md != NULL ) { complete_v2_state_transition ( & dh -> md , e ) ; if ( dh -> md ) release_md ( dh -> md ) ; } reset_globals ( ) ; <S2SV_StartBug> passert ( GLOBALS_ARE_RESET ( ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 int vcc_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct atm_vcc * vcc ; struct sk_buff * skb ; <S2SV_StartBug> int copied , error = - EINVAL ; <S2SV_EndBug> msg -> msg_namelen = 0 ; if ( sock -> state != SS_CONNECTED ) return - ENOTCONN ; if ( flags & ~ ( MSG_DONTWAIT | MSG_PEEK ) ) return - EOPNOTSUPP ; vcc = ATM_SD ( sock ) ; if ( test_bit ( ATM_VF_RELEASED , & vcc -> flags ) || test_bit ( ATM_VF_CLOSE , & vcc -> flags ) || ! test_bit ( ATM_VF_READY , & vcc -> flags ) ) return 0 ; skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & error ) ; if ( ! skb ) return error ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } error = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( error ) return error ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { pr_debug ( \"%d<S2SV_blank>-=<S2SV_blank>%d\\\\n\" , atomic_read ( & sk -> sk_rmem_alloc ) , skb -> truesize ) ; atm_return ( vcc , skb -> truesize ) ; } skb_free_datagram ( sk , skb ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = - EINVAL <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10094\n\n```\nCWE-189 tsize_t t2p_readwrite_pdf_image_tile ( T2P * t2p , TIFF * input , TIFF * output , ttile_t tile ) { uint16 edge = 0 ; tsize_t written = 0 ; unsigned char * buffer = NULL ; tsize_t bufferoffset = 0 ; unsigned char * samplebuffer = NULL ; tsize_t samplebufferoffset = 0 ; tsize_t read = 0 ; uint16 i = 0 ; ttile_t tilecount = 0 ; ttile_t septilecount = 0 ; tsize_t septilesize = 0 ; # ifdef JPEG_SUPPORT unsigned char * jpt ; float * xfloatp ; uint32 xuint32 = 0 ; # endif if ( t2p -> t2p_error != T2P_ERR_OK ) return ( 0 ) ; edge |= t2p_tile_is_right_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) ; edge |= t2p_tile_is_bottom_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) ; if ( ( t2p -> pdf_transcode == T2P_TRANSCODE_RAW ) && ( ( edge == 0 ) # if defined ( JPEG_SUPPORT ) || defined ( OJPEG_SUPPORT ) || ( t2p -> pdf_compression == T2P_COMPRESS_JPEG ) # endif ) ) { # ifdef CCITT_SUPPORT if ( t2p -> pdf_compression == T2P_COMPRESS_G4 ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } TIFFReadRawTile ( input , tile , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; if ( t2p -> tiff_fillorder == FILLORDER_LSB2MSB ) { TIFFReverseBits ( buffer , t2p -> tiff_datasize ) ; } t2pWriteFile ( output , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; _TIFFfree ( buffer ) ; return ( t2p -> tiff_datasize ) ; } # endif # ifdef ZIP_SUPPORT if ( t2p -> pdf_compression == T2P_COMPRESS_ZIP ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } TIFFReadRawTile ( input , tile , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; if ( t2p -> tiff_fillorder == FILLORDER_LSB2MSB ) { TIFFReverseBits ( buffer , t2p -> tiff_datasize ) ; } t2pWriteFile ( output , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; _TIFFfree ( buffer ) ; return ( t2p -> tiff_datasize ) ; } # endif # ifdef OJPEG_SUPPORT if ( t2p -> tiff_compression == COMPRESSION_OJPEG ) { if ( ! t2p -> pdf_ojpegdata ) { TIFFError ( TIFF2PDF_MODULE , \"No<S2SV_blank>support<S2SV_blank>for<S2SV_blank>OJPEG<S2SV_blank>image<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>\" \"bad<S2SV_blank>tables\" , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } _TIFFmemcpy ( buffer , t2p -> pdf_ojpegdata , t2p -> pdf_ojpegdatalength ) ; if ( edge != 0 ) { if ( t2p_tile_is_bottom_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) ) { buffer [ 7 ] = ( t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilelength >> 8 ) & 0xff ; buffer [ 8 ] = ( t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilelength ) & 0xff ; } if ( t2p_tile_is_right_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) ) { buffer [ 9 ] = ( t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilewidth >> 8 ) & 0xff ; buffer [ 10 ] = ( t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilewidth ) & 0xff ; } } bufferoffset = t2p -> pdf_ojpegdatalength ; bufferoffset += TIFFReadRawTile ( input , tile , ( tdata_t ) & ( ( ( unsigned char * ) buffer ) [ bufferoffset ] ) , - 1 ) ; ( ( unsigned char * ) buffer ) [ bufferoffset ++ ] = 0xff ; ( ( unsigned char * ) buffer ) [ bufferoffset ++ ] = 0xd9 ; t2pWriteFile ( output , ( tdata_t ) buffer , bufferoffset ) ; _TIFFfree ( buffer ) ; return ( bufferoffset ) ; } # endif # ifdef JPEG_SUPPORT if ( t2p -> tiff_compression == COMPRESSION_JPEG ) { unsigned char table_end [ 2 ] ; uint32 count = 0 ; buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>\" TIFF_SIZE_FORMAT \"<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( TIFF_SIZE_T ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } if ( TIFFGetField ( input , TIFFTAG_JPEGTABLES , & count , & jpt ) != 0 ) { <S2SV_StartBug> if ( count >= 4 ) { <S2SV_EndBug> int retTIFFReadRawTile ; _TIFFmemcpy ( buffer , jpt , count - 2 ) ; bufferoffset += count - 2 ; table_end [ 0 ] = buffer [ bufferoffset - 2 ] ; table_end [ 1 ] = buffer [ bufferoffset - 1 ] ; xuint32 = bufferoffset ; bufferoffset -= 2 ; retTIFFReadRawTile = TIFFReadRawTile ( input , tile , ( tdata_t ) & ( ( ( unsigned char * ) buffer ) [ bufferoffset ] ) , - 1 ) ; if ( retTIFFReadRawTile < 0 ) { _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } bufferoffset += retTIFFReadRawTile ; buffer [ xuint32 - 2 ] = table_end [ 0 ] ; buffer [ xuint32 - 1 ] = table_end [ 1 ] ; } } t2pWriteFile ( output , ( tdata_t ) buffer , bufferoffset ) ; _TIFFfree ( buffer ) ; return ( bufferoffset ) ; } # endif ( void ) 0 ; } if ( t2p -> pdf_sample == T2P_SAMPLE_NOTHING ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>\" \"t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } read = TIFFReadEncodedTile ( input , tile , ( tdata_t ) & buffer [ bufferoffset ] , t2p -> tiff_datasize ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>tile<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , tile , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } } else { if ( t2p -> pdf_sample == T2P_SAMPLE_PLANAR_SEPARATE_TO_CONTIG ) { septilesize = TIFFTileSize ( input ) ; septilecount = TIFFNumberOfTiles ( input ) ; tilecount = septilecount / t2p -> tiff_samplesperpixel ; buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } samplebuffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( samplebuffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } samplebufferoffset = 0 ; for ( i = 0 ; i < t2p -> tiff_samplesperpixel ; i ++ ) { read = TIFFReadEncodedTile ( input , tile + i * tilecount , ( tdata_t ) & ( samplebuffer [ samplebufferoffset ] ) , septilesize ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>tile<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , tile + i * tilecount , TIFFFileName ( input ) ) ; _TIFFfree ( samplebuffer ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } samplebufferoffset += read ; } t2p_sample_planar_separate_to_contig ( t2p , & ( buffer [ bufferoffset ] ) , samplebuffer , samplebufferoffset ) ; bufferoffset += samplebufferoffset ; _TIFFfree ( samplebuffer ) ; } if ( buffer == NULL ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>\" \"for<S2SV_blank>t2p_readwrite_pdf_image_tile,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } read = TIFFReadEncodedTile ( input , tile , ( tdata_t ) & buffer [ bufferoffset ] , t2p -> tiff_datasize ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>tile<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , tile , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } } if ( t2p -> pdf_sample & T2P_SAMPLE_RGBA_TO_RGB ) { t2p -> tiff_datasize = t2p_sample_rgba_to_rgb ( ( tdata_t ) buffer , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth * t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_RGBAA_TO_RGB ) { t2p -> tiff_datasize = t2p_sample_rgbaa_to_rgb ( ( tdata_t ) buffer , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth * t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_YCBCR_TO_RGB ) { TIFFError ( TIFF2PDF_MODULE , \"No<S2SV_blank>support<S2SV_blank>for<S2SV_blank>YCbCr<S2SV_blank>to<S2SV_blank>RGB<S2SV_blank>in<S2SV_blank>tile<S2SV_blank>for<S2SV_blank>%s\" , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_LAB_SIGNED_TO_UNSIGNED ) { t2p -> tiff_datasize = t2p_sample_lab_signed_to_unsigned ( ( tdata_t ) buffer , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth * t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } } if ( t2p_tile_is_right_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) != 0 ) { t2p_tile_collapse_left ( buffer , TIFFTileRowSize ( input ) , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilewidth , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } t2p_disable ( output ) ; TIFFSetField ( output , TIFFTAG_PHOTOMETRIC , t2p -> tiff_photometric ) ; TIFFSetField ( output , TIFFTAG_BITSPERSAMPLE , t2p -> tiff_bitspersample ) ; TIFFSetField ( output , TIFFTAG_SAMPLESPERPIXEL , t2p -> tiff_samplesperpixel ) ; if ( t2p_tile_is_right_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) == 0 ) { TIFFSetField ( output , TIFFTAG_IMAGEWIDTH , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilewidth ) ; } else { TIFFSetField ( output , TIFFTAG_IMAGEWIDTH , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilewidth ) ; } if ( t2p_tile_is_bottom_edge ( t2p -> tiff_tiles [ t2p -> pdf_page ] , tile ) == 0 ) { TIFFSetField ( output , TIFFTAG_IMAGELENGTH , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; TIFFSetField ( output , TIFFTAG_ROWSPERSTRIP , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_tilelength ) ; } else { TIFFSetField ( output , TIFFTAG_IMAGELENGTH , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilelength ) ; TIFFSetField ( output , TIFFTAG_ROWSPERSTRIP , t2p -> tiff_tiles [ t2p -> pdf_page ] . tiles_edgetilelength ) ; } TIFFSetField ( output , TIFFTAG_PLANARCONFIG , PLANARCONFIG_CONTIG ) ; TIFFSetField ( output , TIFFTAG_FILLORDER , FILLORDER_MSB2LSB ) ; switch ( t2p -> pdf_compression ) { case T2P_COMPRESS_NONE : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_NONE ) ; break ; # ifdef CCITT_SUPPORT case T2P_COMPRESS_G4 : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_CCITTFAX4 ) ; break ; # endif # ifdef JPEG_SUPPORT case T2P_COMPRESS_JPEG : if ( t2p -> tiff_photometric == PHOTOMETRIC_YCBCR ) { uint16 hor = 0 , ver = 0 ; if ( TIFFGetField ( input , TIFFTAG_YCBCRSUBSAMPLING , & hor , & ver ) != 0 ) { if ( hor != 0 && ver != 0 ) { TIFFSetField ( output , TIFFTAG_YCBCRSUBSAMPLING , hor , ver ) ; } } if ( TIFFGetField ( input , TIFFTAG_REFERENCEBLACKWHITE , & xfloatp ) != 0 ) { TIFFSetField ( output , TIFFTAG_REFERENCEBLACKWHITE , xfloatp ) ; } } TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_JPEG ) ; TIFFSetField ( output , TIFFTAG_JPEGTABLESMODE , 0 ) ; if ( t2p -> pdf_colorspace & ( T2P_CS_RGB | T2P_CS_LAB ) ) { TIFFSetField ( output , TIFFTAG_PHOTOMETRIC , PHOTOMETRIC_YCBCR ) ; if ( t2p -> tiff_photometric != PHOTOMETRIC_YCBCR ) { TIFFSetField ( output , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RGB ) ; } else { TIFFSetField ( output , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RAW ) ; } } if ( t2p -> pdf_colorspace & T2P_CS_GRAY ) { ( void ) 0 ; } if ( t2p -> pdf_colorspace & T2P_CS_CMYK ) { ( void ) 0 ; } if ( t2p -> pdf_defaultcompressionquality != 0 ) { TIFFSetField ( output , TIFFTAG_JPEGQUALITY , t2p -> pdf_defaultcompressionquality ) ; } break ; # endif # ifdef ZIP_SUPPORT case T2P_COMPRESS_ZIP : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_DEFLATE ) ; if ( t2p -> pdf_defaultcompressionquality % 100 != 0 ) { TIFFSetField ( output , TIFFTAG_PREDICTOR , t2p -> pdf_defaultcompressionquality % 100 ) ; } if ( t2p -> pdf_defaultcompressionquality / 100 != 0 ) { TIFFSetField ( output , TIFFTAG_ZIPQUALITY , ( t2p -> pdf_defaultcompressionquality / 100 ) ) ; } break ; # endif default : break ; } t2p_enable ( output ) ; t2p -> outputwritten = 0 ; bufferoffset = TIFFWriteEncodedStrip ( output , ( tstrip_t ) 0 , buffer , TIFFStripSize ( output ) ) ; if ( buffer != NULL ) { _TIFFfree ( buffer ) ; buffer = NULL ; } if ( bufferoffset == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>writing<S2SV_blank>encoded<S2SV_blank>tile<S2SV_blank>to<S2SV_blank>output<S2SV_blank>PDF<S2SV_blank>%s\" , TIFFFileName ( output ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } written = t2p -> outputwritten ; return ( written ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( count > <S2SV_ModEnd> 4 ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void joint_motion_search ( VP9_COMP * cpi , MACROBLOCK * x , BLOCK_SIZE bsize , int_mv * frame_mv , int mi_row , int mi_col , int_mv single_newmv [ MAX_REF_FRAMES ] , int * rate_mv ) { <S2SV_StartBug> const int pw = 4 * num_4x4_blocks_wide_lookup [ bsize ] ; <S2SV_EndBug> const int ph = 4 * num_4x4_blocks_high_lookup [ bsize ] ; MACROBLOCKD * xd = & x -> e_mbd ; MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; const int refs [ 2 ] = { mbmi -> ref_frame [ 0 ] , mbmi -> ref_frame [ 1 ] < 0 ? 0 : mbmi -> ref_frame [ 1 ] } ; int_mv ref_mv [ 2 ] ; int ite , ref ; <S2SV_StartBug> uint8_t * second_pred = vpx_memalign ( 16 , pw * ph * sizeof ( uint8_t ) ) ; <S2SV_EndBug> <S2SV_StartBug> const InterpKernel * kernel = vp9_get_interp_kernel ( mbmi -> interp_filter ) ; <S2SV_EndBug> struct buf_2d backup_yv12 [ 2 ] [ MAX_MB_PLANE ] ; <S2SV_StartBug> struct buf_2d scaled_first_yv12 = xd -> plane [ 0 ] . pre [ 0 ] ; <S2SV_EndBug> int last_besterr [ 2 ] = { INT_MAX , INT_MAX } ; const YV12_BUFFER_CONFIG * const scaled_ref_frame [ 2 ] = { vp9_get_scaled_ref_frame ( cpi , mbmi -> ref_frame [ 0 ] ) , vp9_get_scaled_ref_frame ( cpi , mbmi -> ref_frame [ 1 ] ) } ; <S2SV_StartBug> for ( ref = 0 ; ref < 2 ; ++ ref ) { <S2SV_EndBug> <S2SV_StartBug> ref_mv [ ref ] = mbmi -> ref_mvs [ refs [ ref ] ] [ 0 ] ; <S2SV_EndBug> if ( scaled_ref_frame [ ref ] ) { int i ; for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) backup_yv12 [ ref ] [ i ] = xd -> plane [ i ] . pre [ ref ] ; vp9_setup_pre_planes ( xd , ref , scaled_ref_frame [ ref ] , mi_row , mi_col , NULL ) ; } frame_mv [ refs [ ref ] ] . as_int = single_newmv [ refs [ ref ] ] . as_int ; } <S2SV_StartBug> for ( ite = 0 ; ite < 4 ; ite ++ ) { <S2SV_EndBug> struct buf_2d ref_yv12 [ 2 ] ; int bestsme = INT_MAX ; int sadpb = x -> sadperbit16 ; <S2SV_StartBug> int_mv tmp_mv ; <S2SV_EndBug> int search_range = 3 ; int tmp_col_min = x -> mv_col_min ; int tmp_col_max = x -> mv_col_max ; int tmp_row_min = x -> mv_row_min ; int tmp_row_max = x -> mv_row_max ; int id = ite % 2 ; ref_yv12 [ 0 ] = xd -> plane [ 0 ] . pre [ 0 ] ; ref_yv12 [ 1 ] = xd -> plane [ 0 ] . pre [ 1 ] ; <S2SV_StartBug> vp9_build_inter_predictor ( ref_yv12 [ ! id ] . buf , <S2SV_EndBug> ref_yv12 [ ! id ] . stride , second_pred , pw , & frame_mv [ refs [ ! id ] ] . as_mv , <S2SV_StartBug> & xd -> block_refs [ ! id ] -> sf , <S2SV_EndBug> pw , ph , 0 , kernel , MV_PRECISION_Q3 , mi_col * MI_SIZE , mi_row * MI_SIZE ) ; if ( id ) xd -> plane [ 0 ] . pre [ 0 ] = ref_yv12 [ id ] ; vp9_set_mv_search_range ( x , & ref_mv [ id ] . as_mv ) ; <S2SV_StartBug> tmp_mv . as_int = frame_mv [ refs [ id ] ] . as_int ; <S2SV_EndBug> tmp_mv . as_mv . col >>= 3 ; <S2SV_StartBug> tmp_mv . as_mv . row >>= 3 ; <S2SV_EndBug> <S2SV_StartBug> bestsme = vp9_refining_search_8p_c ( x , & tmp_mv . as_mv , sadpb , <S2SV_EndBug> search_range , & cpi -> fn_ptr [ bsize ] , x -> nmvjointcost , x -> mvcost , & ref_mv [ id ] . as_mv , second_pred , pw , ph ) ; if ( bestsme < INT_MAX ) <S2SV_StartBug> bestsme = vp9_get_mvpred_av_var ( x , & tmp_mv . as_mv , & ref_mv [ id ] . as_mv , <S2SV_EndBug> second_pred , & cpi -> fn_ptr [ bsize ] , 1 ) ; x -> mv_col_min = tmp_col_min ; x -> mv_col_max = tmp_col_max ; x -> mv_row_min = tmp_row_min ; x -> mv_row_max = tmp_row_max ; if ( bestsme < INT_MAX ) { int dis ; unsigned int sse ; <S2SV_StartBug> bestsme = cpi -> find_fractional_mv_step_comp ( <S2SV_EndBug> <S2SV_StartBug> x , & tmp_mv . as_mv , <S2SV_EndBug> <S2SV_StartBug> & ref_mv [ id ] . as_mv , <S2SV_EndBug> cpi -> common . allow_high_precision_mv , x -> errorperbit , & cpi -> fn_ptr [ bsize ] , <S2SV_StartBug> 0 , cpi -> sf . subpel_iters_per_step , <S2SV_EndBug> x -> nmvjointcost , x -> mvcost , & dis , & sse , second_pred , pw , ph ) ; } if ( id ) <S2SV_StartBug> xd -> plane [ 0 ] . pre [ 0 ] = scaled_first_yv12 ; <S2SV_EndBug> if ( bestsme < last_besterr [ id ] ) { <S2SV_StartBug> frame_mv [ refs [ id ] ] . as_int = tmp_mv . as_int ; <S2SV_EndBug> last_besterr [ id ] = bestsme ; } else { break ; } } * rate_mv = 0 ; for ( ref = 0 ; ref < 2 ; ++ ref ) { if ( scaled_ref_frame [ ref ] ) { int i ; for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) xd -> plane [ i ] . pre [ ref ] = backup_yv12 [ ref ] [ i ] ; } * rate_mv += vp9_mv_bit_cost ( & frame_mv [ refs [ ref ] ] . as_mv , <S2SV_StartBug> & mbmi -> ref_mvs [ refs [ ref ] ] [ 0 ] . as_mv , <S2SV_EndBug> x -> nmvjointcost , x -> mvcost , MV_COST_WEIGHT ) ; } <S2SV_StartBug> vpx_free ( second_pred ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { const VP9_COMMON * const cm = & cpi -> common ; const <S2SV_ModStart> , ref ; <S2SV_ModEnd> const InterpKernel * <S2SV_ModStart> * kernel = vp9_filter_kernels [ <S2SV_ModEnd> mbmi -> interp_filter <S2SV_ModStart> mbmi -> interp_filter ] ; struct scale_factors sf <S2SV_ModEnd> ; struct buf_2d <S2SV_ModStart> MAX_MB_PLANE ] ; <S2SV_ModEnd> int last_besterr [ <S2SV_ModStart> ) } ; # if CONFIG_VP9_HIGHBITDEPTH DECLARE_ALIGNED ( 16 , uint16_t , second_pred_alloc_16 [ 64 * 64 ] ) ; uint8_t * second_pred ; # else DECLARE_ALIGNED ( 16 , uint8_t , second_pred [ 64 * 64 ] ) ; # endif <S2SV_ModStart> ref ] = x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> as_int ; } # if CONFIG_VP9_HIGHBITDEPTH vp9_setup_scale_factors_for_frame ( & sf , cm -> width , cm -> height , cm -> width , cm -> height , cm -> use_highbitdepth ) ; # else vp9_setup_scale_factors_for_frame ( & sf , cm -> width , cm -> height , cm -> width , cm -> height ) ; # endif <S2SV_ModStart> -> sadperbit16 ; MV <S2SV_ModEnd> tmp_mv ; int <S2SV_ModStart> 1 ] ; # if CONFIG_VP9_HIGHBITDEPTH if ( xd -> cur_buf -> flags & YV12_FLAG_HIGHBITDEPTH ) { second_pred = CONVERT_TO_BYTEPTR ( second_pred_alloc_16 ) ; vp9_highbd_build_inter_predictor ( ref_yv12 [ ! id ] . buf , ref_yv12 [ ! id ] . stride , second_pred , pw , & frame_mv [ refs [ ! id ] ] . as_mv , & sf , pw , ph , 0 , kernel , MV_PRECISION_Q3 , mi_col * MI_SIZE , mi_row * MI_SIZE , xd -> bd ) ; } else { second_pred = ( uint8_t * ) second_pred_alloc_16 ; <S2SV_ModStart> as_mv , & sf , pw , ph , 0 , kernel , MV_PRECISION_Q3 , mi_col * MI_SIZE , mi_row * MI_SIZE ) ; } # else vp9_build_inter_predictor ( ref_yv12 [ ! id ] . buf , ref_yv12 [ ! id ] . stride , second_pred , pw , & frame_mv [ refs [ ! id ] ] . as_mv , & sf , pw , ph , 0 , kernel , MV_PRECISION_Q3 , mi_col * MI_SIZE , mi_row * MI_SIZE ) ; # endif if ( id ) xd -> <S2SV_ModEnd> plane [ 0 <S2SV_ModStart> ) ; tmp_mv <S2SV_ModEnd> = frame_mv [ <S2SV_ModStart> ] ] . as_mv ; tmp_mv <S2SV_ModEnd> . col >>= <S2SV_ModStart> ; tmp_mv . <S2SV_ModEnd> row >>= 3 <S2SV_ModStart> , & tmp_mv , sadpb , search_range , & cpi -> fn_ptr [ bsize ] , & ref_mv [ id ] <S2SV_ModStart> . as_mv , second_pred <S2SV_ModEnd> ) ; if <S2SV_ModStart> , & tmp_mv <S2SV_ModEnd> , & ref_mv <S2SV_ModStart> = cpi -> find_fractional_mv_step <S2SV_ModEnd> ( x , <S2SV_ModStart> , & tmp_mv , & ref_mv [ id ] <S2SV_ModStart> . as_mv , <S2SV_ModEnd> cpi -> common <S2SV_ModStart> -> sf . mv . subpel_iters_per_step , NULL , <S2SV_ModEnd> x -> nmvjointcost <S2SV_ModStart> 0 ] = ref_yv12 [ 0 ] <S2SV_ModEnd> ; if ( <S2SV_ModStart> ] ] . as_mv = tmp_mv <S2SV_ModEnd> ; last_besterr [ <S2SV_ModStart> as_mv , & x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> ) ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5351\n\n```\nCWE-20 static INT AirPDcapScanForKeys ( PAIRPDCAP_CONTEXT ctx , const guint8 * data , const guint mac_header_len , const guint tot_len , AIRPDCAP_SEC_ASSOCIATION_ID id ) { const UCHAR * addr ; guint bodyLength ; PAIRPDCAP_SEC_ASSOCIATION sta_sa ; PAIRPDCAP_SEC_ASSOCIATION sa ; guint offset = 0 ; const guint8 dot1x_header [ ] = { 0xAA , 0xAA , 0x03 , 0x00 , 0x00 , 0x00 , 0x88 , 0x8E } ; const guint8 bt_dot1x_header [ ] = { 0xAA , 0xAA , 0x03 , 0x00 , 0x19 , 0x58 , 0x00 , 0x03 } ; const guint8 tdls_header [ ] = { 0xAA , 0xAA , 0x03 , 0x00 , 0x00 , 0x00 , 0x89 , 0x0D , 0x02 , 0X0C } ; const EAPOL_RSN_KEY * pEAPKey ; # ifdef _DEBUG # define MSGBUF_LEN 255 CHAR msgbuf [ MSGBUF_LEN ] ; # endif AIRPDCAP_DEBUG_TRACE_START ( \"AirPDcapScanForKeys\" ) ; offset = mac_header_len ; if ( memcmp ( data + offset , dot1x_header , 8 ) == 0 || memcmp ( data + offset , bt_dot1x_header , 8 ) == 0 ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Authentication:<S2SV_blank>EAPOL<S2SV_blank>packet\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; offset += 8 ; if ( data [ offset + 1 ] != 3 ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Not<S2SV_blank>EAPOL-Key\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } bodyLength = pntoh16 ( data + offset + 2 ) ; <S2SV_StartBug> if ( ( tot_len - offset - 4 ) < bodyLength ) { <S2SV_EndBug> AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"EAPOL<S2SV_blank>body<S2SV_blank>too<S2SV_blank>short\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } offset += 4 ; pEAPKey = ( const EAPOL_RSN_KEY * ) ( data + offset ) ; if ( pEAPKey -> type != AIRPDCAP_RSN_WPA2_KEY_DESCRIPTOR && pEAPKey -> type != AIRPDCAP_RSN_WPA_KEY_DESCRIPTOR ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Not<S2SV_blank>valid<S2SV_blank>key<S2SV_blank>descriptor<S2SV_blank>type\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } offset += 1 ; sa = AirPDcapGetSaPtr ( ctx , & id ) ; if ( sa == NULL ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"No<S2SV_blank>SA<S2SV_blank>for<S2SV_blank>BSSID<S2SV_blank>found\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_REQ_DATA ; } if ( AirPDcapRsna4WHandshake ( ctx , data , sa , offset , tot_len ) == AIRPDCAP_RET_SUCCESS_HANDSHAKE ) return AIRPDCAP_RET_SUCCESS_HANDSHAKE ; if ( mac_header_len + GROUP_KEY_PAYLOAD_LEN_MIN > tot_len ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Message<S2SV_blank>too<S2SV_blank>short<S2SV_blank>for<S2SV_blank>Group<S2SV_blank>Key\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } if ( AIRPDCAP_EAP_KEY ( data [ offset + 1 ] ) != 0 || AIRPDCAP_EAP_ACK ( data [ offset + 1 ] ) != 1 || AIRPDCAP_EAP_MIC ( data [ offset ] ) != 1 || AIRPDCAP_EAP_SEC ( data [ offset ] ) != 1 ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Key<S2SV_blank>bitfields<S2SV_blank>not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>Group<S2SV_blank>Key\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } memcpy ( id . sta , broadcast_mac , AIRPDCAP_MAC_LEN ) ; sa = AirPDcapGetSaPtr ( ctx , & id ) ; if ( sa == NULL ) { return AIRPDCAP_RET_REQ_DATA ; } if ( ( addr = AirPDcapGetStaAddress ( ( const AIRPDCAP_MAC_FRAME_ADDR4 * ) ( data ) ) ) != NULL ) { memcpy ( id . sta , addr , AIRPDCAP_MAC_LEN ) ; # ifdef _DEBUG g_snprintf ( msgbuf , MSGBUF_LEN , \"ST_MAC:<S2SV_blank>%2X.%2X.%2X.%2X.%2X.%2X\\\\t\" , id . sta [ 0 ] , id . sta [ 1 ] , id . sta [ 2 ] , id . sta [ 3 ] , id . sta [ 4 ] , id . sta [ 5 ] ) ; # endif AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , msgbuf , AIRPDCAP_DEBUG_LEVEL_3 ) ; } else { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"SA<S2SV_blank>not<S2SV_blank>found\" , AIRPDCAP_DEBUG_LEVEL_5 ) ; return AIRPDCAP_RET_REQ_DATA ; } sta_sa = AirPDcapGetSaPtr ( ctx , & id ) ; if ( sta_sa == NULL ) { return AIRPDCAP_RET_REQ_DATA ; } return ( AirPDcapDecryptWPABroadcastKey ( pEAPKey , sta_sa -> wpa . ptk + 16 , sa , tot_len - offset + 1 ) ) ; } else if ( memcmp ( data + offset , tdls_header , 10 ) == 0 ) { const guint8 * initiator , * responder ; guint8 action ; guint status , offset_rsne = 0 , offset_fte = 0 , offset_link = 0 , offset_timeout = 0 ; AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Authentication:<S2SV_blank>TDLS<S2SV_blank>Action<S2SV_blank>Frame\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; offset += 10 ; action = data [ offset ] ; if ( action != 1 && action != 2 ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Not<S2SV_blank>Response<S2SV_blank>nor<S2SV_blank>confirm\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } offset ++ ; status = pntoh16 ( data + offset ) ; if ( status != 0 ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"TDLS<S2SV_blank>setup<S2SV_blank>not<S2SV_blank>successfull\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } offset += 5 ; while ( offset < ( tot_len - 2 ) ) { if ( data [ offset ] == 48 ) { offset_rsne = offset ; } else if ( data [ offset ] == 55 ) { offset_fte = offset ; } else if ( data [ offset ] == 56 ) { offset_timeout = offset ; } else if ( data [ offset ] == 101 ) { offset_link = offset ; } if ( tot_len < offset + data [ offset + 1 ] + 2 ) { return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } offset += data [ offset + 1 ] + 2 ; } if ( offset_rsne == 0 || offset_fte == 0 || offset_timeout == 0 || offset_link == 0 ) { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Cannot<S2SV_blank>Find<S2SV_blank>all<S2SV_blank>necessary<S2SV_blank>IEs\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Found<S2SV_blank>RSNE/Fast<S2SV_blank>BSS/Timeout<S2SV_blank>Interval/Link<S2SV_blank>IEs\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; initiator = & data [ offset_link + 8 ] ; responder = & data [ offset_link + 14 ] ; if ( memcmp ( initiator , responder , AIRPDCAP_MAC_LEN ) < 0 ) { memcpy ( id . sta , initiator , AIRPDCAP_MAC_LEN ) ; memcpy ( id . bssid , responder , AIRPDCAP_MAC_LEN ) ; } else { memcpy ( id . sta , responder , AIRPDCAP_MAC_LEN ) ; memcpy ( id . bssid , initiator , AIRPDCAP_MAC_LEN ) ; } sa = AirPDcapGetSaPtr ( ctx , & id ) ; if ( sa == NULL ) { return AIRPDCAP_RET_REQ_DATA ; } if ( sa -> validKey ) { if ( memcmp ( sa -> wpa . nonce , data + offset_fte + 52 , AIRPDCAP_WPA_NONCE_LEN ) == 0 ) { return AIRPDCAP_RET_SUCCESS_HANDSHAKE ; } else { AIRPDCAP_SEC_ASSOCIATION * tmp_sa = g_new ( AIRPDCAP_SEC_ASSOCIATION , 1 ) ; memcpy ( tmp_sa , sa , sizeof ( AIRPDCAP_SEC_ASSOCIATION ) ) ; sa -> next = tmp_sa ; sa -> validKey = FALSE ; } } if ( AirPDcapTDLSDeriveKey ( sa , data , offset_rsne , offset_fte , offset_timeout , offset_link , action ) == AIRPDCAP_RET_SUCCESS ) { AIRPDCAP_DEBUG_TRACE_END ( \"AirPDcapScanForKeys\" ) ; return AIRPDCAP_RET_SUCCESS_HANDSHAKE ; } } else { AIRPDCAP_DEBUG_PRINT_LINE ( \"AirPDcapScanForKeys\" , \"Skipping:<S2SV_blank>not<S2SV_blank>an<S2SV_blank>EAPOL<S2SV_blank>packet\" , AIRPDCAP_DEBUG_LEVEL_3 ) ; } AIRPDCAP_DEBUG_TRACE_END ( \"AirPDcapScanForKeys\" ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( ( <S2SV_ModStart> ) < bodyLength ) || ( bodyLength < sizeof ( EAPOL_RSN_KEY ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void fill_variance ( int64_t s2 , int64_t s , int c , var * v ) { v -> sum_square_error = s2 ; v -> sum_error = s ; <S2SV_StartBug> v -> count = c ; <S2SV_EndBug> <S2SV_StartBug> if ( c > 0 ) <S2SV_EndBug> v -> variance = ( int ) ( 256 * ( v -> sum_square_error - v -> sum_error * v -> sum_error / v -> count ) / v -> count ) ; else v -> variance = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; v -> log2_count <S2SV_ModEnd> = c ; <S2SV_ModStart> = c ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14164\n\n```\nCWE-787 static OPJ_BOOL opj_j2k_write_all_tile_parts ( opj_j2k_t * p_j2k , OPJ_BYTE * p_data , OPJ_UINT32 * p_data_written , OPJ_UINT32 p_total_data_size , opj_stream_private_t * p_stream , struct opj_event_mgr * p_manager ) { OPJ_UINT32 tilepartno = 0 ; OPJ_UINT32 l_nb_bytes_written = 0 ; OPJ_UINT32 l_current_nb_bytes_written ; OPJ_UINT32 l_part_tile_size ; OPJ_UINT32 tot_num_tp ; OPJ_UINT32 pino ; OPJ_BYTE * l_begin_data ; opj_tcp_t * l_tcp = 00 ; opj_tcd_t * l_tcd = 00 ; opj_cp_t * l_cp = 00 ; l_tcd = p_j2k -> m_tcd ; l_cp = & ( p_j2k -> m_cp ) ; l_tcp = l_cp -> tcps + p_j2k -> m_current_tile_number ; tot_num_tp = opj_j2k_get_num_tp ( l_cp , 0 , p_j2k -> m_current_tile_number ) ; ++ p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number ; for ( tilepartno = 1 ; tilepartno < tot_num_tp ; ++ tilepartno ) { p_j2k -> m_specific_param . m_encoder . m_current_poc_tile_part_number = tilepartno ; l_current_nb_bytes_written = 0 ; l_part_tile_size = 0 ; l_begin_data = p_data ; <S2SV_StartBug> if ( ! opj_j2k_write_sot ( p_j2k , p_data , & l_current_nb_bytes_written , p_stream , <S2SV_EndBug> p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_part_tile_size += l_current_nb_bytes_written ; l_current_nb_bytes_written = 0 ; if ( ! opj_j2k_write_sod ( p_j2k , l_tcd , p_data , & l_current_nb_bytes_written , p_total_data_size , p_stream , p_manager ) ) { return OPJ_FALSE ; } p_data += l_current_nb_bytes_written ; l_nb_bytes_written += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_part_tile_size += l_current_nb_bytes_written ; opj_write_bytes ( l_begin_data + 6 , l_part_tile_size , 4 ) ; if ( OPJ_IS_CINEMA ( l_cp -> rsiz ) ) { opj_j2k_update_tlm ( p_j2k , l_part_tile_size ) ; } ++ p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number ; } for ( pino = 1 ; pino <= l_tcp -> numpocs ; ++ pino ) { l_tcd -> cur_pino = pino ; tot_num_tp = opj_j2k_get_num_tp ( l_cp , pino , p_j2k -> m_current_tile_number ) ; for ( tilepartno = 0 ; tilepartno < tot_num_tp ; ++ tilepartno ) { p_j2k -> m_specific_param . m_encoder . m_current_poc_tile_part_number = tilepartno ; l_current_nb_bytes_written = 0 ; l_part_tile_size = 0 ; l_begin_data = p_data ; <S2SV_StartBug> if ( ! opj_j2k_write_sot ( p_j2k , p_data , & l_current_nb_bytes_written , p_stream , <S2SV_EndBug> p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_part_tile_size += l_current_nb_bytes_written ; l_current_nb_bytes_written = 0 ; if ( ! opj_j2k_write_sod ( p_j2k , l_tcd , p_data , & l_current_nb_bytes_written , p_total_data_size , p_stream , p_manager ) ) { return OPJ_FALSE ; } l_nb_bytes_written += l_current_nb_bytes_written ; p_data += l_current_nb_bytes_written ; p_total_data_size -= l_current_nb_bytes_written ; l_part_tile_size += l_current_nb_bytes_written ; opj_write_bytes ( l_begin_data + 6 , l_part_tile_size , 4 ) ; if ( OPJ_IS_CINEMA ( l_cp -> rsiz ) ) { opj_j2k_update_tlm ( p_j2k , l_part_tile_size ) ; } ++ p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number ; } } * p_data_written = l_nb_bytes_written ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , p_data , p_total_data_size , <S2SV_ModStart> , p_data , p_total_data_size ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9421\n\n```\nCWE-000 bool_t xdr_krb5_principal ( XDR * xdrs , krb5_principal * objp ) { int ret ; char * p = NULL ; krb5_principal pr = NULL ; static krb5_context context = NULL ; if ( ! context && kadm5_init_krb5_context ( & context ) ) return ( FALSE ) ; switch ( xdrs -> x_op ) { case XDR_ENCODE : if ( * objp ) { if ( ( ret = krb5_unparse_name ( context , * objp , & p ) ) != 0 ) return FALSE ; } if ( ! xdr_nullstring ( xdrs , & p ) ) return FALSE ; if ( p ) free ( p ) ; break ; case XDR_DECODE : if ( ! xdr_nullstring ( xdrs , & p ) ) return FALSE ; if ( p ) { ret = krb5_parse_name ( context , p , & pr ) ; if ( ret != 0 ) return FALSE ; * objp = pr ; free ( p ) ; } else * objp = NULL ; break ; case XDR_FREE : if ( * objp != NULL ) krb5_free_principal ( context , * objp ) ; <S2SV_StartBug> break ; <S2SV_EndBug> } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> objp ) ; * objp = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_print_message_fields ( NTLM_MESSAGE_FIELDS * fields , const char * name ) <S2SV_EndBug> { WLog_DBG ( TAG , \"%s<S2SV_blank>(Len:<S2SV_blank>%\" PRIu16 \"<S2SV_blank>MaxLen:<S2SV_blank>%\" PRIu16 \"<S2SV_blank>BufferOffset:<S2SV_blank>%\" PRIu32 \")\" , name , fields -> Len , fields -> MaxLen , fields -> BufferOffset ) ; if ( fields -> Len > 0 ) winpr_HexDump ( TAG , WLOG_DEBUG , fields -> Buffer , fields -> Len ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9683\n\n```\nCWE-189 static void ecryptfs_decode_from_filename ( unsigned char * dst , size_t * dst_size , const unsigned char * src , size_t src_size ) { u8 current_bit_offset = 0 ; size_t src_byte_offset = 0 ; size_t dst_byte_offset = 0 ; if ( dst == NULL ) { ( * dst_size ) = ecryptfs_max_decoded_size ( src_size ) ; goto out ; } while ( src_byte_offset < src_size ) { unsigned char src_byte = filename_rev_map [ ( int ) src [ src_byte_offset ] ] ; switch ( current_bit_offset ) { case 0 : dst [ dst_byte_offset ] = ( src_byte << 2 ) ; current_bit_offset = 6 ; break ; case 6 : dst [ dst_byte_offset ++ ] |= ( src_byte >> 4 ) ; dst [ dst_byte_offset ] = ( ( src_byte & 0xF ) << 4 ) ; current_bit_offset = 4 ; break ; case 4 : dst [ dst_byte_offset ++ ] |= ( src_byte >> 2 ) ; dst [ dst_byte_offset ] = ( src_byte << 6 ) ; current_bit_offset = 2 ; break ; case 2 : dst [ dst_byte_offset ++ ] |= ( src_byte ) ; <S2SV_StartBug> dst [ dst_byte_offset ] = 0 ; <S2SV_EndBug> current_bit_offset = 0 ; break ; } src_byte_offset ++ ; } ( * dst_size ) = dst_byte_offset ; out : return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> src_byte ) ; <S2SV_ModEnd> current_bit_offset = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9919\n\n```\nCWE-20 static void icmp6_send ( struct sk_buff * skb , u8 type , u8 code , __u32 info , const struct in6_addr * force_saddr ) { struct net * net = dev_net ( skb -> dev ) ; struct inet6_dev * idev = NULL ; struct ipv6hdr * hdr = ipv6_hdr ( skb ) ; struct sock * sk ; struct ipv6_pinfo * np ; const struct in6_addr * saddr = NULL ; struct dst_entry * dst ; struct icmp6hdr tmp_hdr ; struct flowi6 fl6 ; struct icmpv6_msg msg ; struct sockcm_cookie sockc_unused = { 0 } ; struct ipcm6_cookie ipc6 ; int iif = 0 ; int addr_type = 0 ; int len ; int err = 0 ; u32 mark = IP6_REPLY_MARK ( net , skb -> mark ) ; if ( ( u8 * ) hdr < skb -> head || ( skb_network_header ( skb ) + sizeof ( * hdr ) ) > skb_tail_pointer ( skb ) ) return ; addr_type = ipv6_addr_type ( & hdr -> daddr ) ; if ( ipv6_chk_addr ( net , & hdr -> daddr , skb -> dev , 0 ) || ipv6_chk_acast_addr_src ( net , skb -> dev , & hdr -> daddr ) ) saddr = & hdr -> daddr ; if ( addr_type & IPV6_ADDR_MULTICAST || skb -> pkt_type != PACKET_HOST ) { if ( type != ICMPV6_PKT_TOOBIG && ! ( type == ICMPV6_PARAMPROB && code == ICMPV6_UNK_OPTION && ( opt_unrec ( skb , info ) ) ) ) return ; saddr = NULL ; } addr_type = ipv6_addr_type ( & hdr -> saddr ) ; if ( __ipv6_addr_needs_scope_id ( addr_type ) ) iif = skb -> dev -> ifindex ; <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> iif = l3mdev_master_ifindex ( skb_dst ( skb ) -> dev ) ; <S2SV_EndBug> if ( ( addr_type == IPV6_ADDR_ANY ) || ( addr_type & IPV6_ADDR_MULTICAST ) ) { net_dbg_ratelimited ( \"icmp6_send:<S2SV_blank>addr_any/mcast<S2SV_blank>source<S2SV_blank>[%pI6c<S2SV_blank>><S2SV_blank>%pI6c]\\\\n\" , & hdr -> saddr , & hdr -> daddr ) ; return ; } if ( is_ineligible ( skb ) ) { net_dbg_ratelimited ( \"icmp6_send:<S2SV_blank>no<S2SV_blank>reply<S2SV_blank>to<S2SV_blank>icmp<S2SV_blank>error<S2SV_blank>[%pI6c<S2SV_blank>><S2SV_blank>%pI6c]\\\\n\" , & hdr -> saddr , & hdr -> daddr ) ; return ; } mip6_addr_swap ( skb ) ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_proto = IPPROTO_ICMPV6 ; fl6 . daddr = hdr -> saddr ; if ( force_saddr ) saddr = force_saddr ; if ( saddr ) fl6 . saddr = * saddr ; fl6 . flowi6_mark = mark ; fl6 . flowi6_oif = iif ; fl6 . fl6_icmp_type = type ; fl6 . fl6_icmp_code = code ; security_skb_classify_flow ( skb , flowi6_to_flowi ( & fl6 ) ) ; sk = icmpv6_xmit_lock ( net ) ; if ( ! sk ) return ; sk -> sk_mark = mark ; np = inet6_sk ( sk ) ; if ( ! icmpv6_xrlim_allow ( sk , type , & fl6 ) ) goto out ; tmp_hdr . icmp6_type = type ; tmp_hdr . icmp6_code = code ; tmp_hdr . icmp6_cksum = 0 ; tmp_hdr . icmp6_pointer = htonl ( info ) ; if ( ! fl6 . flowi6_oif && ipv6_addr_is_multicast ( & fl6 . daddr ) ) fl6 . flowi6_oif = np -> mcast_oif ; else if ( ! fl6 . flowi6_oif ) fl6 . flowi6_oif = np -> ucast_oif ; ipc6 . tclass = np -> tclass ; fl6 . flowlabel = ip6_make_flowinfo ( ipc6 . tclass , fl6 . flowlabel ) ; dst = icmpv6_route_lookup ( net , skb , sk , & fl6 ) ; if ( IS_ERR ( dst ) ) goto out ; ipc6 . hlimit = ip6_sk_dst_hoplimit ( np , & fl6 , dst ) ; ipc6 . dontfrag = np -> dontfrag ; ipc6 . opt = NULL ; msg . skb = skb ; msg . offset = skb_network_offset ( skb ) ; msg . type = type ; len = skb -> len - msg . offset ; len = min_t ( unsigned int , len , IPV6_MIN_MTU - sizeof ( struct ipv6hdr ) - sizeof ( struct icmp6hdr ) ) ; if ( len < 0 ) { net_dbg_ratelimited ( \"icmp:<S2SV_blank>len<S2SV_blank>problem<S2SV_blank>[%pI6c<S2SV_blank>><S2SV_blank>%pI6c]\\\\n\" , & hdr -> saddr , & hdr -> daddr ) ; goto out_dst_release ; } rcu_read_lock ( ) ; idev = __in6_dev_get ( skb -> dev ) ; err = ip6_append_data ( sk , icmpv6_getfrag , & msg , len + sizeof ( struct icmp6hdr ) , sizeof ( struct icmp6hdr ) , & ipc6 , & fl6 , ( struct rt6_info * ) dst , MSG_DONTWAIT , & sockc_unused ) ; if ( err ) { ICMP6_INC_STATS ( net , idev , ICMP6_MIB_OUTERRORS ) ; ip6_flush_pending_frames ( sk ) ; } else { err = icmpv6_push_pending_frames ( sk , & fl6 , & tmp_hdr , len + sizeof ( struct icmp6hdr ) ) ; } rcu_read_unlock ( ) ; out_dst_release : dst_release ( dst ) ; out : icmpv6_xmit_unlock ( sk ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ifindex ; else { dst = skb_dst ( skb ) ; <S2SV_ModStart> = l3mdev_master_ifindex ( dst ? dst -> dev : skb -> dev ) ; } <S2SV_ModEnd> if ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9903\n\n```\nCWE-200 static int sched_read_attr ( struct sched_attr __user * uattr , struct sched_attr * attr , unsigned int usize ) { int ret ; if ( ! access_ok ( VERIFY_WRITE , uattr , usize ) ) return - EFAULT ; if ( usize < sizeof ( * attr ) ) { unsigned char * addr ; unsigned char * end ; addr = ( void * ) attr + usize ; end = ( void * ) attr + sizeof ( * attr ) ; for ( ; addr < end ; addr ++ ) { if ( * addr ) goto err_size ; } attr -> size = usize ; } <S2SV_StartBug> ret = copy_to_user ( uattr , attr , usize ) ; <S2SV_EndBug> if ( ret ) return - EFAULT ; out : return ret ; err_size : ret = - E2BIG ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , attr , attr -> size <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int putint ( jas_stream_t * out , int sgnd , int prec , long val ) { int n ; int c ; bool s ; <S2SV_StartBug> ulong tmp ; <S2SV_EndBug> assert ( ( ! sgnd && prec >= 1 ) || ( sgnd && prec >= 2 ) ) ; if ( sgnd ) { val = encode_twos_comp ( val , prec ) ; } assert ( val >= 0 ) ; val &= ( 1 << prec ) - 1 ; n = ( prec + 7 ) / 8 ; while ( -- n >= 0 ) { c = ( val >> ( n * 8 ) ) & 0xff ; if ( jas_stream_putc ( out , c ) != c ) return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bool s ; jas_ulong <S2SV_ModEnd> tmp ; assert\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 int init_pci ( struct vmctx * ctx ) { struct mem_range mr ; struct pci_vdev_ops * ops ; struct businfo * bi ; struct slotinfo * si ; struct funcinfo * fi ; size_t lowmem ; int bus , slot , func ; int success_cnt = 0 ; int error ; pci_emul_iobase = PCI_EMUL_IOBASE ; pci_emul_membase32 = vm_get_lowmem_limit ( ctx ) ; pci_emul_membase64 = PCI_EMUL_MEMBASE64 ; create_gsi_sharing_groups ( ) ; for ( bus = 0 ; bus < MAXBUSES ; bus ++ ) { bi = pci_businfo [ bus ] ; if ( bi == NULL ) continue ; bi -> iobase = pci_emul_iobase ; bi -> membase32 = pci_emul_membase32 ; bi -> membase64 = pci_emul_membase64 ; for ( slot = 0 ; slot < MAXSLOTS ; slot ++ ) { si = & bi -> slotinfo [ slot ] ; for ( func = 0 ; func < MAXFUNCS ; func ++ ) { fi = & si -> si_funcs [ func ] ; if ( fi -> fi_name == NULL ) continue ; ops = pci_emul_finddev ( fi -> fi_name ) ; <S2SV_StartBug> assert ( ops != NULL ) ; <S2SV_EndBug> pr_notice ( \"pci<S2SV_blank>init<S2SV_blank>%s\\\\r\\\\n\" , fi -> fi_name ) ; error = pci_emul_init ( ctx , ops , bus , slot , func , fi ) ; if ( error ) { pr_err ( \"pci<S2SV_blank>%s<S2SV_blank>init<S2SV_blank>failed\\\\n\" , fi -> fi_name ) ; goto pci_emul_init_fail ; } success_cnt ++ ; } } pci_emul_iobase += BUSIO_ROUNDUP ; pci_emul_iobase = roundup2 ( pci_emul_iobase , BUSIO_ROUNDUP ) ; bi -> iolimit = pci_emul_iobase ; pci_emul_membase32 += BUSMEM_ROUNDUP ; pci_emul_membase32 = roundup2 ( pci_emul_membase32 , BUSMEM_ROUNDUP ) ; bi -> memlimit32 = pci_emul_membase32 ; pci_emul_membase64 += BUSMEM_ROUNDUP ; pci_emul_membase64 = roundup2 ( pci_emul_membase64 , BUSMEM_ROUNDUP ) ; bi -> memlimit64 = pci_emul_membase64 ; } error = check_gsi_sharing_violation ( ) ; if ( error < 0 ) goto pci_emul_init_fail ; for ( bus = 0 ; bus < MAXBUSES ; bus ++ ) { bi = pci_businfo [ bus ] ; if ( bi == NULL ) continue ; for ( slot = 0 ; slot < MAXSLOTS ; slot ++ ) { si = & bi -> slotinfo [ slot ] ; for ( func = 0 ; func < MAXFUNCS ; func ++ ) { fi = & si -> si_funcs [ func ] ; if ( fi -> fi_devi == NULL ) continue ; pci_lintr_route ( fi -> fi_devi ) ; ops = fi -> fi_devi -> dev_ops ; if ( ops && ops -> vdev_phys_access ) ops -> vdev_phys_access ( ctx , fi -> fi_devi ) ; } } } lpc_pirq_routed ( ) ; lowmem = vm_get_lowmem_size ( ctx ) ; bzero ( & mr , sizeof ( struct mem_range ) ) ; mr . name = \"PCI<S2SV_blank>hole<S2SV_blank>(32-bit)\" ; mr . flags = MEM_F_RW ; mr . base = lowmem ; mr . size = ( 4ULL * 1024 * 1024 * 1024 ) - lowmem ; mr . handler = pci_emul_fallback_handler ; error = register_mem_fallback ( & mr ) ; <S2SV_StartBug> assert ( error == 0 ) ; <S2SV_EndBug> bzero ( & mr , sizeof ( struct mem_range ) ) ; mr . name = \"PCI<S2SV_blank>hole<S2SV_blank>(64-bit)\" ; mr . flags = MEM_F_RW ; mr . base = PCI_EMUL_MEMBASE64 ; mr . size = PCI_EMUL_MEMLIMIT64 - PCI_EMUL_MEMBASE64 ; mr . handler = pci_emul_fallback_handler ; error = register_mem_fallback ( & mr ) ; <S2SV_StartBug> assert ( error == 0 ) ; <S2SV_EndBug> bzero ( & mr , sizeof ( struct mem_range ) ) ; mr . name = \"PCI<S2SV_blank>ECFG\" ; mr . flags = MEM_F_RW ; mr . base = PCI_EMUL_ECFG_BASE ; mr . size = PCI_EMUL_ECFG_SIZE ; mr . handler = pci_emul_ecfg_handler ; error = register_mem ( & mr ) ; <S2SV_StartBug> assert ( error == 0 ) ; <S2SV_EndBug> return 0 ; pci_emul_init_fail : for ( bus = 0 ; bus < MAXBUSES && success_cnt > 0 ; bus ++ ) { bi = pci_businfo [ bus ] ; if ( bi == NULL ) continue ; for ( slot = 0 ; slot < MAXSLOTS && success_cnt > 0 ; slot ++ ) { si = & bi -> slotinfo [ slot ] ; for ( func = 0 ; func < MAXFUNCS ; func ++ ) { fi = & si -> si_funcs [ func ] ; if ( fi -> fi_name == NULL ) continue ; if ( success_cnt -- <= 0 ) break ; ops = pci_emul_finddev ( fi -> fi_name ) ; <S2SV_StartBug> assert ( ops != NULL ) ; <S2SV_EndBug> pci_emul_deinit ( ctx , ops , bus , slot , func , fi ) ; } } } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fi_name ) ; if ( ! ops ) { pr_warn ( \"No<S2SV_blank>driver<S2SV_blank>for<S2SV_blank>device<S2SV_blank>[%s]\\\\n\" , fi -> fi_name ) ; continue ; } <S2SV_ModEnd> pr_notice ( \"pci<S2SV_blank>init<S2SV_blank>%s\\\\r\\\\n\" <S2SV_ModStart> mr ) ; if ( error != 0 ) goto pci_emul_init_fail <S2SV_ModEnd> ; bzero ( <S2SV_ModStart> mr ) ; if ( error != 0 ) goto pci_emul_init_fail <S2SV_ModEnd> ; bzero ( <S2SV_ModStart> mr ) ; if ( error != 0 ) goto pci_emul_init_fail <S2SV_ModEnd> ; return 0 <S2SV_ModStart> fi_name ) ; if ( ! ops ) { pr_warn ( \"No<S2SV_blank>driver<S2SV_blank>for<S2SV_blank>device<S2SV_blank>[%s]\\\\n\" , fi -> fi_name ) ; continue ; } <S2SV_ModEnd> pci_emul_deinit ( ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3570\n\n```\nCWE-310 void bn_mul_comba4 ( BN_ULONG * r , BN_ULONG * a , BN_ULONG * b ) { <S2SV_StartBug> BN_ULONG t1 , t2 ; <S2SV_EndBug> BN_ULONG c1 , c2 , c3 ; c1 = 0 ; c2 = 0 ; c3 = 0 ; mul_add_c ( a [ 0 ] , b [ 0 ] , c1 , c2 , c3 ) ; r [ 0 ] = c1 ; c1 = 0 ; mul_add_c ( a [ 0 ] , b [ 1 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 1 ] , b [ 0 ] , c2 , c3 , c1 ) ; r [ 1 ] = c2 ; c2 = 0 ; mul_add_c ( a [ 2 ] , b [ 0 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 1 ] , b [ 1 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 0 ] , b [ 2 ] , c3 , c1 , c2 ) ; r [ 2 ] = c3 ; c3 = 0 ; mul_add_c ( a [ 0 ] , b [ 3 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 1 ] , b [ 2 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 2 ] , b [ 1 ] , c1 , c2 , c3 ) ; mul_add_c ( a [ 3 ] , b [ 0 ] , c1 , c2 , c3 ) ; r [ 3 ] = c1 ; c1 = 0 ; mul_add_c ( a [ 3 ] , b [ 1 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 2 ] , b [ 2 ] , c2 , c3 , c1 ) ; mul_add_c ( a [ 1 ] , b [ 3 ] , c2 , c3 , c1 ) ; r [ 4 ] = c2 ; c2 = 0 ; mul_add_c ( a [ 2 ] , b [ 3 ] , c3 , c1 , c2 ) ; mul_add_c ( a [ 3 ] , b [ 2 ] , c3 , c1 , c2 ) ; r [ 5 ] = c3 ; c3 = 0 ; mul_add_c ( a [ 3 ] , b [ 3 ] , c1 , c2 , c3 ) ; r [ 6 ] = c1 ; r [ 7 ] = c2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { BN_ULONG <S2SV_ModEnd> c1 , c2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14054\n\n```\nCWE-834 static int ivr_read_header ( AVFormatContext * s ) { unsigned tag , type , len , tlen , value ; int i , j , n , count , nb_streams = 0 , ret ; uint8_t key [ 256 ] , val [ 256 ] ; AVIOContext * pb = s -> pb ; AVStream * st ; int64_t pos , offset , temp ; pos = avio_tell ( pb ) ; tag = avio_rl32 ( pb ) ; if ( tag == MKTAG ( '.' , 'R' , '1' , 'M' ) ) { if ( avio_rb16 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; if ( avio_r8 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; len = avio_rb32 ( pb ) ; avio_skip ( pb , len ) ; avio_skip ( pb , 5 ) ; temp = avio_rb64 ( pb ) ; while ( ! avio_feof ( pb ) && temp ) { offset = temp ; temp = avio_rb64 ( pb ) ; } avio_skip ( pb , offset - avio_tell ( pb ) ) ; if ( avio_r8 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; len = avio_rb32 ( pb ) ; avio_skip ( pb , len ) ; if ( avio_r8 ( pb ) != 2 ) return AVERROR_INVALIDDATA ; avio_skip ( pb , 16 ) ; pos = avio_tell ( pb ) ; tag = avio_rl32 ( pb ) ; } if ( tag != MKTAG ( '.' , 'R' , 'E' , 'C' ) ) return AVERROR_INVALIDDATA ; if ( avio_r8 ( pb ) != 0 ) return AVERROR_INVALIDDATA ; count = avio_rb32 ( pb ) ; for ( i = 0 ; i < count ; i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; type = avio_r8 ( pb ) ; tlen = avio_rb32 ( pb ) ; avio_get_str ( pb , tlen , key , sizeof ( key ) ) ; len = avio_rb32 ( pb ) ; if ( type == 5 ) { avio_get_str ( pb , len , val , sizeof ( val ) ) ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>\\'%s\\'\\\\n\" , key , val ) ; } else if ( type == 4 ) { av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>\\'0x\" , key ) ; <S2SV_StartBug> for ( j = 0 ; j < len ; j ++ ) <S2SV_EndBug> <S2SV_StartBug> av_log ( s , AV_LOG_DEBUG , \"%X\" , avio_r8 ( pb ) ) ; <S2SV_EndBug> av_log ( s , AV_LOG_DEBUG , \"\\'\\\\n\" ) ; } else if ( len == 4 && type == 3 && ! strncmp ( key , \"StreamCount\" , tlen ) ) { nb_streams = value = avio_rb32 ( pb ) ; } else if ( len == 4 && type == 3 ) { value = avio_rb32 ( pb ) ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>%d\\\\n\" , key , value ) ; } else { av_log ( s , AV_LOG_DEBUG , \"Skipping<S2SV_blank>unsupported<S2SV_blank>key:<S2SV_blank>%s\\\\n\" , key ) ; avio_skip ( pb , len ) ; } } for ( n = 0 ; n < nb_streams ; n ++ ) { st = avformat_new_stream ( s , NULL ) ; if ( ! st ) return AVERROR ( ENOMEM ) ; st -> priv_data = ff_rm_alloc_rmstream ( ) ; if ( ! st -> priv_data ) return AVERROR ( ENOMEM ) ; if ( avio_r8 ( pb ) != 1 ) return AVERROR_INVALIDDATA ; count = avio_rb32 ( pb ) ; for ( i = 0 ; i < count ; i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; type = avio_r8 ( pb ) ; tlen = avio_rb32 ( pb ) ; avio_get_str ( pb , tlen , key , sizeof ( key ) ) ; len = avio_rb32 ( pb ) ; if ( type == 5 ) { avio_get_str ( pb , len , val , sizeof ( val ) ) ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>\\'%s\\'\\\\n\" , key , val ) ; } else if ( type == 4 && ! strncmp ( key , \"OpaqueData\" , tlen ) ) { ret = ffio_ensure_seekback ( pb , 4 ) ; if ( ret < 0 ) return ret ; if ( avio_rb32 ( pb ) == MKBETAG ( 'M' , 'L' , 'T' , 'I' ) ) { ret = rm_read_multi ( s , pb , st , NULL ) ; } else { avio_seek ( pb , - 4 , SEEK_CUR ) ; ret = ff_rm_read_mdpr_codecdata ( s , pb , st , st -> priv_data , len , NULL ) ; } if ( ret < 0 ) return ret ; } else if ( type == 4 ) { int j ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>\\'0x\" , key ) ; for ( j = 0 ; j < len ; j ++ ) av_log ( s , AV_LOG_DEBUG , \"%X\" , avio_r8 ( pb ) ) ; av_log ( s , AV_LOG_DEBUG , \"\\'\\\\n\" ) ; } else if ( len == 4 && type == 3 && ! strncmp ( key , \"Duration\" , tlen ) ) { st -> duration = avio_rb32 ( pb ) ; } else if ( len == 4 && type == 3 ) { value = avio_rb32 ( pb ) ; av_log ( s , AV_LOG_DEBUG , \"%s<S2SV_blank>=<S2SV_blank>%d\\\\n\" , key , value ) ; } else { av_log ( s , AV_LOG_DEBUG , \"Skipping<S2SV_blank>unsupported<S2SV_blank>key:<S2SV_blank>%s\\\\n\" , key ) ; avio_skip ( pb , len ) ; } } } if ( avio_r8 ( pb ) != 6 ) return AVERROR_INVALIDDATA ; avio_skip ( pb , 12 ) ; avio_skip ( pb , avio_rb64 ( pb ) + pos - avio_tell ( s -> pb ) ) ; if ( avio_r8 ( pb ) != 8 ) return AVERROR_INVALIDDATA ; avio_skip ( pb , 8 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> j ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8654\n\n```\nCWE-119 void jpc_qmfb_join_colgrp ( jpc_fix_t * a , int numrows , int stride , int parity ) { int bufsize = JPC_CEILDIVPOW2 ( numrows , 1 ) ; jpc_fix_t joinbuf [ QMFB_JOINBUFSIZE * JPC_QMFB_COLGRPSIZE ] ; jpc_fix_t * buf = joinbuf ; jpc_fix_t * srcptr ; jpc_fix_t * dstptr ; register jpc_fix_t * srcptr2 ; register jpc_fix_t * dstptr2 ; register int n ; register int i ; int hstartcol ; if ( bufsize > QMFB_JOINBUFSIZE ) { if ( ! ( buf = jas_alloc3 ( bufsize , JPC_QMFB_COLGRPSIZE , sizeof ( jpc_fix_t ) ) ) ) { abort ( ) ; } } hstartcol = ( numrows + 1 - parity ) >> 1 ; n = hstartcol ; srcptr = & a [ 0 ] ; dstptr = buf ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < JPC_QMFB_COLGRPSIZE ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } srcptr += stride ; dstptr += JPC_QMFB_COLGRPSIZE ; } srcptr = & a [ hstartcol * stride ] ; dstptr = & a [ ( 1 - parity ) * stride ] ; n = numrows - hstartcol ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < JPC_QMFB_COLGRPSIZE ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } dstptr += 2 * stride ; srcptr += stride ; } srcptr = buf ; dstptr = & a [ parity * stride ] ; n = hstartcol ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < JPC_QMFB_COLGRPSIZE ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } dstptr += 2 * stride ; srcptr += JPC_QMFB_COLGRPSIZE ; } if ( buf != joinbuf ) { jas_free ( buf ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9993\n\n```\nCWE-200 static int read_gab2_sub ( AVFormatContext * s , AVStream * st , AVPacket * pkt ) { if ( pkt -> size >= 7 && pkt -> size < INT_MAX - AVPROBE_PADDING_SIZE && ! strcmp ( pkt -> data , \"GAB2\" ) && AV_RL16 ( pkt -> data + 5 ) == 2 ) { uint8_t desc [ 256 ] ; int score = AVPROBE_SCORE_EXTENSION , ret ; AVIStream * ast = st -> priv_data ; AVInputFormat * sub_demuxer ; AVRational time_base ; int size ; AVIOContext * pb = avio_alloc_context ( pkt -> data + 7 , pkt -> size - 7 , 0 , NULL , NULL , NULL , NULL ) ; AVProbeData pd ; unsigned int desc_len = avio_rl32 ( pb ) ; if ( desc_len > pb -> buf_end - pb -> buf_ptr ) goto error ; ret = avio_get_str16le ( pb , desc_len , desc , sizeof ( desc ) ) ; avio_skip ( pb , desc_len - ret ) ; if ( * desc ) av_dict_set ( & st -> metadata , \"title\" , desc , 0 ) ; avio_rl16 ( pb ) ; avio_rl32 ( pb ) ; size = pb -> buf_end - pb -> buf_ptr ; pd = ( AVProbeData ) { . buf = av_mallocz ( size + AVPROBE_PADDING_SIZE ) , . buf_size = size } ; if ( ! pd . buf ) goto error ; memcpy ( pd . buf , pb -> buf_ptr , size ) ; sub_demuxer = av_probe_input_format2 ( & pd , 1 , & score ) ; av_freep ( & pd . buf ) ; if ( ! sub_demuxer ) goto error ; <S2SV_StartBug> if ( ! ( ast -> sub_ctx = avformat_alloc_context ( ) ) ) <S2SV_EndBug> goto error ; ast -> sub_ctx -> pb = pb ; if ( ff_copy_whiteblacklists ( ast -> sub_ctx , s ) < 0 ) goto error ; if ( ! avformat_open_input ( & ast -> sub_ctx , \"\" , sub_demuxer , NULL ) ) { if ( ast -> sub_ctx -> nb_streams != 1 ) goto error ; ff_read_packet ( ast -> sub_ctx , & ast -> sub_pkt ) ; avcodec_parameters_copy ( st -> codecpar , ast -> sub_ctx -> streams [ 0 ] -> codecpar ) ; time_base = ast -> sub_ctx -> streams [ 0 ] -> time_base ; avpriv_set_pts_info ( st , 64 , time_base . num , time_base . den ) ; } ast -> sub_buffer = pkt -> data ; memset ( pkt , 0 , sizeof ( * pkt ) ) ; return 1 ; error : av_freep ( & ast -> sub_ctx ) ; av_freep ( & pb ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( strcmp ( sub_demuxer -> name , \"srt\" ) && strcmp ( sub_demuxer -> name , \"ass\" ) ) goto error ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_cyclic_refresh_setup ( VP9_COMP * const cpi ) { VP9_COMMON * const cm = & cpi -> common ; const RATE_CONTROL * const rc = & cpi -> rc ; CYCLIC_REFRESH * const cr = cpi -> cyclic_refresh ; struct segmentation * const seg = & cm -> seg ; <S2SV_StartBug> unsigned char * const seg_map = cpi -> segmentation_map ; <S2SV_EndBug> <S2SV_StartBug> const int apply_cyclic_refresh = apply_cyclic_refresh_bitrate ( cm , rc ) ; <S2SV_EndBug> if ( ! apply_cyclic_refresh || ( cm -> frame_type == KEY_FRAME ) || <S2SV_StartBug> ( cpi -> svc . temporal_layer_id > 0 ) ) { <S2SV_EndBug> vpx_memset ( seg_map , 0 , cm -> mi_rows * cm -> mi_cols ) ; vp9_disable_segmentation ( & cm -> seg ) ; <S2SV_StartBug> if ( cm -> frame_type == KEY_FRAME ) <S2SV_EndBug> <S2SV_StartBug> cr -> sb_index = 0 ; <S2SV_EndBug> return ; } else { int qindex_delta = 0 ; <S2SV_StartBug> int i , block_count , bl_index , sb_rows , sb_cols , sbs_in_frame ; <S2SV_EndBug> int xmis , ymis , x , y , qindex2 ; <S2SV_StartBug> const float rate_ratio_qdelta = 2.0 ; <S2SV_EndBug> vp9_clear_system_state ( ) ; cr -> max_sbs_perframe = 10 ; cr -> max_qdelta_perc = 50 ; cr -> min_block_size = BLOCK_8X8 ; cr -> time_for_refresh = 1 ; cr -> thresh_rate_sb = ( rc -> sb64_target_rate * 256 ) >> 2 ; cr -> thresh_dist_sb = 8 * ( int ) ( vp9_convert_qindex_to_q ( cm -> base_qindex ) * vp9_convert_qindex_to_q ( cm -> base_qindex ) ) ; if ( cpi -> sf . use_nonrd_pick_mode ) { cr -> thresh_rate_sb = ( rc -> sb64_target_rate * 256 ) >> 3 ; cr -> thresh_dist_sb = 4 * ( int ) ( vp9_convert_qindex_to_q ( cm -> base_qindex ) * vp9_convert_qindex_to_q ( cm -> base_qindex ) ) ; } cr -> num_seg_blocks = 0 ; vpx_memset ( seg_map , 0 , cm -> mi_rows * cm -> mi_cols ) ; vp9_enable_segmentation ( & cm -> seg ) ; vp9_clearall_segfeatures ( seg ) ; seg -> abs_delta = SEGMENT_DELTADATA ; vp9_disable_segfeature ( seg , 0 , SEG_LVL_ALT_Q ) ; vp9_enable_segfeature ( seg , 1 , SEG_LVL_ALT_Q ) ; qindex_delta = vp9_compute_qdelta_by_rate ( rc , cm -> frame_type , cm -> base_qindex , rate_ratio_qdelta ) ; if ( - qindex_delta > cr -> max_qdelta_perc * cm -> base_qindex / 100 ) qindex_delta = - cr -> max_qdelta_perc * cm -> base_qindex / 100 ; qindex2 = clamp ( cm -> base_qindex + cm -> y_dc_delta_q + qindex_delta , 0 , MAXQ ) ; cr -> rdmult = vp9_compute_rd_mult ( cpi , qindex2 ) ; <S2SV_StartBug> vp9_set_segdata ( seg , 1 , SEG_LVL_ALT_Q , qindex_delta ) ; <S2SV_EndBug> <S2SV_StartBug> sb_cols = ( cm -> mi_cols + MI_BLOCK_SIZE - 1 ) / MI_BLOCK_SIZE ; <S2SV_EndBug> sb_rows = ( cm -> mi_rows + MI_BLOCK_SIZE - 1 ) / MI_BLOCK_SIZE ; sbs_in_frame = sb_cols * sb_rows ; block_count = cr -> max_sbs_perframe * sbs_in_frame / 100 ; assert ( cr -> sb_index < sbs_in_frame ) ; i = cr -> sb_index ; do { int sum_map = 0 ; int sb_row_index = ( i / sb_cols ) ; int sb_col_index = i - sb_row_index * sb_cols ; int mi_row = sb_row_index * MI_BLOCK_SIZE ; int mi_col = sb_col_index * MI_BLOCK_SIZE ; assert ( mi_row >= 0 && mi_row < cm -> mi_rows ) ; assert ( mi_col >= 0 && mi_col < cm -> mi_cols ) ; bl_index = mi_row * cm -> mi_cols + mi_col ; xmis = MIN ( cm -> mi_cols - mi_col , num_8x8_blocks_wide_lookup [ BLOCK_64X64 ] ) ; ymis = MIN ( cm -> mi_rows - mi_row , num_8x8_blocks_high_lookup [ BLOCK_64X64 ] ) ; for ( y = 0 ; y < ymis ; y ++ ) { for ( x = 0 ; x < xmis ; x ++ ) { const int bl_index2 = bl_index + y * cm -> mi_cols + x ; if ( cr -> map [ bl_index2 ] == 0 ) { seg_map [ bl_index2 ] = 1 ; sum_map ++ ; } else if ( cr -> map [ bl_index2 ] < 0 ) { cr -> map [ bl_index2 ] ++ ; } } } if ( sum_map > 0 && sum_map < xmis * ymis ) { const int new_value = ( sum_map >= xmis * ymis / 2 ) ; for ( y = 0 ; y < ymis ; y ++ ) for ( x = 0 ; x < xmis ; x ++ ) seg_map [ bl_index + y * cm -> mi_cols + x ] = new_value ; } i ++ ; if ( i == sbs_in_frame ) { i = 0 ; } if ( sum_map >= xmis * ymis / 2 ) block_count -- ; } while ( block_count && i != cr -> sb_index ) ; cr -> sb_index = i ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> seg ; <S2SV_ModEnd> const int apply_cyclic_refresh <S2SV_ModStart> , rc ) ; if ( cm -> current_video_frame == 0 ) cr -> low_content_avg = 0.0 <S2SV_ModStart> > 0 ) || ( cpi -> svc . spatial_layer_id > 0 ) ) { unsigned char * const seg_map = cpi -> segmentation_map ; memset <S2SV_ModEnd> ( seg_map , <S2SV_ModStart> == KEY_FRAME ) { memset ( cr -> last_coded_q_map , MAXQ , cm -> mi_rows * cm -> mi_cols * sizeof ( * cr -> last_coded_q_map ) ) ; <S2SV_ModStart> = 0 ; } <S2SV_ModStart> 0 ; int <S2SV_ModEnd> qindex2 ; const <S2SV_ModStart> qindex2 ; const double q = vp9_convert_qindex_to_q ( cm -> base_qindex , cm -> bit_depth ) ; vpx_clear_system_state ( ) ; cr -> thresh_rate_sb = ( ( int64_t ) ( rc -> sb64_target_rate ) << 8 ) << 2 ; cr -> thresh_dist_sb = ( ( int64_t ) ( q * q ) ) << 2 ; vp9_enable_segmentation ( & cm -> seg ) ; vp9_clearall_segfeatures ( seg ) ; seg -> abs_delta = SEGMENT_DELTADATA ; vp9_disable_segfeature ( seg , CR_SEGMENT_ID_BASE , SEG_LVL_ALT_Q ) ; vp9_enable_segfeature ( seg , CR_SEGMENT_ID_BOOST1 , SEG_LVL_ALT_Q ) ; vp9_enable_segfeature ( seg , CR_SEGMENT_ID_BOOST2 , SEG_LVL_ALT_Q ) ; qindex_delta = compute_deltaq ( cpi , cm -> base_qindex , cr -> rate_ratio_qdelta ) ; cr -> qindex_delta [ 1 ] = qindex_delta <S2SV_ModEnd> ; qindex2 = <S2SV_ModStart> ( seg , CR_SEGMENT_ID_BOOST1 <S2SV_ModEnd> , SEG_LVL_ALT_Q , <S2SV_ModStart> qindex_delta ) ; qindex_delta = compute_deltaq ( cpi , cm -> base_qindex , MIN ( CR_MAX_RATE_TARGET_RATIO , 0.1 * cr -> rate_boost_fac * cr -> rate_ratio_qdelta ) ) ; cr -> qindex_delta [ 2 ] = qindex_delta ; vp9_set_segdata ( seg , CR_SEGMENT_ID_BOOST2 , SEG_LVL_ALT_Q , qindex_delta ) ; cyclic_refresh_update_map ( cpi ) <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9777\n\n```\nCWE-125 static void rtc_irq_eoi_tracking_reset ( struct kvm_ioapic * ioapic ) { ioapic -> rtc_status . pending_eoi = 0 ; <S2SV_StartBug> bitmap_zero ( ioapic -> rtc_status . dest_map . map , KVM_MAX_VCPUS ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . map , KVM_MAX_VCPU_ID <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13146\n\n```\nCWE-772 static Image * ReadMATImageV4 ( const ImageInfo * image_info , Image * image , ExceptionInfo * exception ) { typedef struct { unsigned char Type [ 4 ] ; unsigned int nRows ; unsigned int nCols ; unsigned int imagf ; unsigned int nameLen ; } MAT4_HDR ; long ldblk ; EndianType endian ; Image * rotate_image ; MagickBooleanType status ; MAT4_HDR HDR ; QuantumInfo * quantum_info ; QuantumFormatType format_type ; register ssize_t i ; ssize_t count , y ; unsigned char * pixels ; unsigned int depth ; <S2SV_StartBug> ( void ) SeekBlob ( image , 0 , SEEK_SET ) ; <S2SV_EndBug> while ( EOFBlob ( image ) != MagickFalse ) { ldblk = ReadBlobLSBLong ( image ) ; if ( ( ldblk > 9999 ) || ( ldblk < 0 ) ) break ; HDR . Type [ 3 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 2 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 1 ] = ldblk % 10 ; ldblk /= 10 ; HDR . Type [ 0 ] = ldblk ; if ( HDR . Type [ 3 ] != 0 ) break ; if ( HDR . Type [ 2 ] != 0 ) break ; if ( HDR . Type [ 0 ] == 0 ) { HDR . nRows = ReadBlobLSBLong ( image ) ; HDR . nCols = ReadBlobLSBLong ( image ) ; HDR . imagf = ReadBlobLSBLong ( image ) ; HDR . nameLen = ReadBlobLSBLong ( image ) ; endian = LSBEndian ; } else { HDR . nRows = ReadBlobMSBLong ( image ) ; HDR . nCols = ReadBlobMSBLong ( image ) ; HDR . imagf = ReadBlobMSBLong ( image ) ; HDR . nameLen = ReadBlobMSBLong ( image ) ; endian = MSBEndian ; } if ( ( HDR . imagf != 0 ) && ( HDR . imagf != 1 ) ) break ; if ( HDR . nameLen > 0xFFFF ) return ( ( Image * ) NULL ) ; for ( i = 0 ; i < ( ssize_t ) HDR . nameLen ; i ++ ) { int byte ; byte = ReadBlobByte ( image ) ; if ( byte == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } image -> columns = ( size_t ) HDR . nRows ; image -> rows = ( size_t ) HDR . nCols ; SetImageColorspace ( image , GRAYColorspace , exception ) ; if ( image_info -> ping != MagickFalse ) { Swap ( image -> columns , image -> rows ) ; return ( image ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( ( Image * ) NULL ) ; quantum_info = AcquireQuantumInfo ( image_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) return ( ( Image * ) NULL ) ; switch ( HDR . Type [ 1 ] ) { case 0 : format_type = FloatingPointQuantumFormat ; depth = 64 ; break ; case 1 : format_type = FloatingPointQuantumFormat ; depth = 32 ; break ; case 2 : format_type = UnsignedQuantumFormat ; depth = 16 ; break ; case 3 : format_type = SignedQuantumFormat ; depth = 16 ; break ; case 4 : format_type = UnsignedQuantumFormat ; depth = 8 ; break ; default : format_type = UnsignedQuantumFormat ; depth = 8 ; break ; } image -> depth = depth ; if ( HDR . Type [ 0 ] != 0 ) SetQuantumEndian ( image , quantum_info , MSBEndian ) ; status = SetQuantumFormat ( image , quantum_info , format_type ) ; status = SetQuantumDepth ( image , quantum_info , depth ) ; status = SetQuantumEndian ( image , quantum_info , endian ) ; SetQuantumScale ( quantum_info , 1.0 ) ; pixels = ( unsigned char * ) GetQuantumPixels ( quantum_info ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { int status ; register Quantum * magick_restrict q ; count = ReadBlob ( image , depth / 8 * image -> columns , ( char * ) pixels ) ; if ( count == - 1 ) break ; q = QueueAuthenticPixels ( image , 0 , image -> rows - y - 1 , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; ( void ) ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , GrayQuantum , pixels , exception ) ; if ( ( HDR . Type [ 1 ] == 2 ) || ( HDR . Type [ 1 ] == 3 ) ) FixSignedValues ( image , q , ( int ) image -> columns ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } if ( HDR . imagf == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { count = ReadBlob ( image , depth / 8 * image -> columns , ( char * ) pixels ) ; if ( count == - 1 ) break ; if ( HDR . Type [ 1 ] == 0 ) InsertComplexDoubleRow ( image , ( double * ) pixels , y , 0 , 0 , exception ) ; else InsertComplexFloatRow ( image , ( float * ) pixels , y , 0 , 0 , exception ) ; } <S2SV_StartBug> quantum_info = DestroyQuantumInfo ( quantum_info ) ; <S2SV_EndBug> rotate_image = RotateImage ( image , 90.0 , exception ) ; if ( rotate_image != ( Image * ) NULL ) { image = DestroyImage ( image ) ; image = rotate_image ; } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int depth ; quantum_info = ( QuantumInfo * ) NULL ; <S2SV_ModStart> ) ; } if ( quantum_info != ( QuantumInfo * ) NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2186\n\n```\nCWE-000 static int powermate_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct usb_device * udev = interface_to_usbdev ( intf ) ; struct usb_host_interface * interface ; struct usb_endpoint_descriptor * endpoint ; struct powermate_device * pm ; struct input_dev * input_dev ; int pipe , maxp ; int error = - ENOMEM ; <S2SV_StartBug> interface = intf -> cur_altsetting ; <S2SV_EndBug> endpoint = & interface -> endpoint [ 0 ] . desc ; if ( ! usb_endpoint_is_int_in ( endpoint ) ) return - EIO ; usb_control_msg ( udev , usb_sndctrlpipe ( udev , 0 ) , 0x0a , USB_TYPE_CLASS | USB_RECIP_INTERFACE , 0 , interface -> desc . bInterfaceNumber , NULL , 0 , USB_CTRL_SET_TIMEOUT ) ; pm = kzalloc ( sizeof ( struct powermate_device ) , GFP_KERNEL ) ; input_dev = input_allocate_device ( ) ; if ( ! pm || ! input_dev ) goto fail1 ; if ( powermate_alloc_buffers ( udev , pm ) ) goto fail2 ; pm -> irq = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! pm -> irq ) goto fail2 ; pm -> config = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! pm -> config ) goto fail3 ; pm -> udev = udev ; pm -> intf = intf ; pm -> input = input_dev ; usb_make_path ( udev , pm -> phys , sizeof ( pm -> phys ) ) ; strlcat ( pm -> phys , \"/input0\" , sizeof ( pm -> phys ) ) ; spin_lock_init ( & pm -> lock ) ; switch ( le16_to_cpu ( udev -> descriptor . idProduct ) ) { case POWERMATE_PRODUCT_NEW : input_dev -> name = pm_name_powermate ; break ; case POWERMATE_PRODUCT_OLD : input_dev -> name = pm_name_soundknob ; break ; default : input_dev -> name = pm_name_soundknob ; printk ( KERN_WARNING \"powermate:<S2SV_blank>unknown<S2SV_blank>product<S2SV_blank>id<S2SV_blank>%04x\\\\n\" , le16_to_cpu ( udev -> descriptor . idProduct ) ) ; } input_dev -> phys = pm -> phys ; usb_to_input_id ( udev , & input_dev -> id ) ; input_dev -> dev . parent = & intf -> dev ; input_set_drvdata ( input_dev , pm ) ; input_dev -> event = powermate_input_event ; input_dev -> evbit [ 0 ] = BIT_MASK ( EV_KEY ) | BIT_MASK ( EV_REL ) | BIT_MASK ( EV_MSC ) ; input_dev -> keybit [ BIT_WORD ( BTN_0 ) ] = BIT_MASK ( BTN_0 ) ; input_dev -> relbit [ BIT_WORD ( REL_DIAL ) ] = BIT_MASK ( REL_DIAL ) ; input_dev -> mscbit [ BIT_WORD ( MSC_PULSELED ) ] = BIT_MASK ( MSC_PULSELED ) ; pipe = usb_rcvintpipe ( udev , endpoint -> bEndpointAddress ) ; maxp = usb_maxpacket ( udev , pipe , usb_pipeout ( pipe ) ) ; if ( maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX ) { printk ( KERN_WARNING \"powermate:<S2SV_blank>Expected<S2SV_blank>payload<S2SV_blank>of<S2SV_blank>%d--%d<S2SV_blank>bytes,<S2SV_blank>found<S2SV_blank>%d<S2SV_blank>bytes!\\\\n\" , POWERMATE_PAYLOAD_SIZE_MIN , POWERMATE_PAYLOAD_SIZE_MAX , maxp ) ; maxp = POWERMATE_PAYLOAD_SIZE_MAX ; } usb_fill_int_urb ( pm -> irq , udev , pipe , pm -> data , maxp , powermate_irq , pm , endpoint -> bInterval ) ; pm -> irq -> transfer_dma = pm -> data_dma ; pm -> irq -> transfer_flags |= URB_NO_TRANSFER_DMA_MAP ; if ( usb_submit_urb ( pm -> irq , GFP_KERNEL ) ) { error = - EIO ; goto fail4 ; } error = input_register_device ( pm -> input ) ; if ( error ) goto fail5 ; pm -> requires_update = UPDATE_PULSE_ASLEEP | UPDATE_PULSE_AWAKE | UPDATE_PULSE_MODE | UPDATE_STATIC_BRIGHTNESS ; powermate_pulse_led ( pm , 0x80 , 255 , 0 , 1 , 0 ) ; usb_set_intfdata ( intf , pm ) ; return 0 ; fail5 : usb_kill_urb ( pm -> irq ) ; fail4 : usb_free_urb ( pm -> config ) ; fail3 : usb_free_urb ( pm -> irq ) ; fail2 : powermate_free_buffers ( udev , pm ) ; fail1 : input_free_device ( input_dev ) ; kfree ( pm ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> intf -> cur_altsetting ; if ( interface -> desc . bNumEndpoints < 1 ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int mount_entry ( const char * fsname , const char * target , const char * fstype , unsigned long mountflags , <S2SV_StartBug> const char * data , int optional ) <S2SV_EndBug> { # ifdef HAVE_STATVFS struct statvfs sb ; # endif <S2SV_StartBug> if ( mount ( fsname , target , fstype , mountflags & ~ MS_REMOUNT , data ) ) { <S2SV_EndBug> if ( optional ) { INFO ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'<S2SV_blank>(optional):<S2SV_blank>%s\" , fsname , target , strerror ( errno ) ) ; return 0 ; } else { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'\" , fsname , target ) ; return - 1 ; } } if ( ( mountflags & MS_REMOUNT ) || ( mountflags & MS_BIND ) ) { DEBUG ( \"remounting<S2SV_blank>%s<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>respect<S2SV_blank>bind<S2SV_blank>or<S2SV_blank>remount<S2SV_blank>options\" , fsname ? fsname : \"(none)\" , target ? target : \"(none)\" ) ; unsigned long rqd_flags = 0 ; if ( mountflags & MS_RDONLY ) rqd_flags |= MS_RDONLY ; # ifdef HAVE_STATVFS if ( statvfs ( fsname , & sb ) == 0 ) { unsigned long required_flags = rqd_flags ; if ( sb . f_flag & MS_NOSUID ) required_flags |= MS_NOSUID ; if ( sb . f_flag & MS_NODEV ) required_flags |= MS_NODEV ; if ( sb . f_flag & MS_RDONLY ) required_flags |= MS_RDONLY ; if ( sb . f_flag & MS_NOEXEC ) required_flags |= MS_NOEXEC ; DEBUG ( \"(at<S2SV_blank>remount)<S2SV_blank>flags<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>was<S2SV_blank>%lu,<S2SV_blank>required<S2SV_blank>extra<S2SV_blank>flags<S2SV_blank>are<S2SV_blank>%lu\" , fsname , sb . f_flag , required_flags ) ; if ( ! ( mountflags & MS_REMOUNT ) ) { if ( ! ( required_flags & ~ mountflags ) && rqd_flags == 0 ) { DEBUG ( \"mountflags<S2SV_blank>already<S2SV_blank>was<S2SV_blank>%lu,<S2SV_blank>skipping<S2SV_blank>remount\" , mountflags ) ; goto skipremount ; } } mountflags |= required_flags ; } # endif if ( mount ( fsname , target , fstype , <S2SV_StartBug> mountflags | MS_REMOUNT , data ) ) { <S2SV_EndBug> if ( optional ) { INFO ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'<S2SV_blank>(optional):<S2SV_blank>%s\" , fsname , target , strerror ( errno ) ) ; return 0 ; } else { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'\" , fsname , target ) ; return - 1 ; } } } # ifdef HAVE_STATVFS skipremount : # endif DEBUG ( \"mounted<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\',<S2SV_blank>type<S2SV_blank>\\'%s\\'\" , fsname , target , fstype ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int optional , const char * rootfs <S2SV_ModStart> endif if ( safe_mount <S2SV_ModEnd> ( fsname , <S2SV_ModStart> MS_REMOUNT , data , rootfs <S2SV_ModStart> , data ) < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int simulate_llsc ( struct pt_regs * regs , unsigned int opcode ) { if ( ( opcode & OPCODE ) == LL ) { perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> return simulate_ll ( regs , opcode ) ; } if ( ( opcode & OPCODE ) == SC ) { perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> return simulate_sc ( regs , opcode ) ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs , <S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12439\n\n```\nCWE-20 int main ( int argc , char * * argv ) { mode_t old_umask ; <S2SV_StartBug> cleanup_free char * base_path = NULL ; <S2SV_EndBug> int clone_flags ; char * old_cwd = NULL ; pid_t pid ; int event_fd = - 1 ; int child_wait_fd = - 1 ; int setup_finished_pipe [ ] = { - 1 , - 1 } ; const char * new_cwd ; uid_t ns_uid ; gid_t ns_gid ; struct stat sbuf ; uint64_t val ; int res UNUSED ; cleanup_free char * seccomp_data = NULL ; size_t seccomp_len ; struct sock_fprog seccomp_prog ; cleanup_free char * args_data = NULL ; if ( argc == 2 && ( strcmp ( argv [ 1 ] , \"--version\" ) == 0 ) ) print_version_and_exit ( ) ; real_uid = getuid ( ) ; real_gid = getgid ( ) ; acquire_privs ( ) ; if ( prctl ( PR_SET_NO_NEW_PRIVS , 1 , 0 , 0 , 0 ) < 0 ) die_with_error ( \"prctl(PR_SET_NO_NEW_CAPS)<S2SV_blank>failed\" ) ; read_overflowids ( ) ; argv0 = argv [ 0 ] ; if ( isatty ( 1 ) ) host_tty_dev = ttyname ( 1 ) ; argv ++ ; argc -- ; if ( argc == 0 ) usage ( EXIT_FAILURE , stderr ) ; parse_args ( & argc , ( const char * * * ) & argv ) ; args_data = opt_args_data ; opt_args_data = NULL ; if ( ( requested_caps [ 0 ] || requested_caps [ 1 ] ) && is_privileged ) die ( \"--cap-add<S2SV_blank>in<S2SV_blank>setuid<S2SV_blank>mode<S2SV_blank>can<S2SV_blank>be<S2SV_blank>used<S2SV_blank>only<S2SV_blank>by<S2SV_blank>root\" ) ; if ( opt_userns_block_fd != - 1 && ! opt_unshare_user ) die ( \"--userns-block-fd<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( opt_userns_block_fd != - 1 && opt_info_fd == - 1 ) die ( \"--userns-block-fd<S2SV_blank>requires<S2SV_blank>--info-fd\" ) ; if ( ! is_privileged && getuid ( ) != 0 ) opt_unshare_user = TRUE ; # ifdef ENABLE_REQUIRE_USERNS if ( is_privileged && getuid ( ) != 0 ) opt_unshare_user = TRUE ; # endif if ( opt_unshare_user_try && stat ( \"/proc/self/ns/user\" , & sbuf ) == 0 ) { bool disabled = FALSE ; if ( stat ( \"/sys/module/user_namespace/parameters/enable\" , & sbuf ) == 0 ) { cleanup_free char * enable = NULL ; enable = load_file_at ( AT_FDCWD , \"/sys/module/user_namespace/parameters/enable\" ) ; if ( enable != NULL && enable [ 0 ] == 'N' ) disabled = TRUE ; } if ( stat ( \"/proc/sys/user/max_user_namespaces\" , & sbuf ) == 0 ) { cleanup_free char * max_user_ns = NULL ; max_user_ns = load_file_at ( AT_FDCWD , \"/proc/sys/user/max_user_namespaces\" ) ; if ( max_user_ns != NULL && strcmp ( max_user_ns , \"0\\\\n\" ) == 0 ) disabled = TRUE ; } if ( ! disabled ) opt_unshare_user = TRUE ; } if ( argc == 0 ) usage ( EXIT_FAILURE , stderr ) ; __debug__ ( ( \"Creating<S2SV_blank>root<S2SV_blank>mount<S2SV_blank>point\\\\n\" ) ) ; if ( opt_sandbox_uid == - 1 ) opt_sandbox_uid = real_uid ; if ( opt_sandbox_gid == - 1 ) opt_sandbox_gid = real_gid ; if ( ! opt_unshare_user && opt_sandbox_uid != real_uid ) die ( \"Specifying<S2SV_blank>--uid<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( ! opt_unshare_user && opt_sandbox_gid != real_gid ) die ( \"Specifying<S2SV_blank>--gid<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( ! opt_unshare_uts && opt_sandbox_hostname != NULL ) die ( \"Specifying<S2SV_blank>--hostname<S2SV_blank>requires<S2SV_blank>--unshare-uts\" ) ; if ( opt_as_pid_1 && ! opt_unshare_pid ) die ( \"Specifying<S2SV_blank>--as-pid-1<S2SV_blank>requires<S2SV_blank>--unshare-pid\" ) ; if ( opt_as_pid_1 && lock_files != NULL ) die ( \"Specifying<S2SV_blank>--as-pid-1<S2SV_blank>and<S2SV_blank>--lock-file<S2SV_blank>is<S2SV_blank>not<S2SV_blank>permitted\" ) ; proc_fd = open ( \"/proc\" , O_PATH ) ; if ( proc_fd == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>open<S2SV_blank>/proc\" ) ; <S2SV_StartBug> base_path = xasprintf ( \"/run/user/%d/.bubblewrap\" , real_uid ) ; <S2SV_EndBug> if ( ensure_dir ( base_path , 0755 ) ) { free ( base_path ) ; base_path = xasprintf ( \"/tmp/.bubblewrap-%d\" , real_uid ) ; if ( ensure_dir ( base_path , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>root<S2SV_blank>mountpoint<S2SV_blank>failed\" ) ; } __debug__ ( ( \"creating<S2SV_blank>new<S2SV_blank>namespace\\\\n\" ) ) ; if ( opt_unshare_pid && ! opt_as_pid_1 ) { event_fd = eventfd ( 0 , EFD_CLOEXEC | EFD_NONBLOCK ) ; if ( event_fd == - 1 ) die_with_error ( \"eventfd()\" ) ; } block_sigchild ( ) ; clone_flags = SIGCHLD | CLONE_NEWNS ; if ( opt_unshare_user ) clone_flags |= CLONE_NEWUSER ; if ( opt_unshare_pid ) clone_flags |= CLONE_NEWPID ; if ( opt_unshare_net ) clone_flags |= CLONE_NEWNET ; if ( opt_unshare_ipc ) clone_flags |= CLONE_NEWIPC ; if ( opt_unshare_uts ) clone_flags |= CLONE_NEWUTS ; if ( opt_unshare_cgroup ) { if ( stat ( \"/proc/self/ns/cgroup\" , & sbuf ) ) { if ( errno == ENOENT ) die ( \"Cannot<S2SV_blank>create<S2SV_blank>new<S2SV_blank>cgroup<S2SV_blank>namespace<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>it\" ) ; else die_with_error ( \"stat<S2SV_blank>on<S2SV_blank>/proc/self/ns/cgroup<S2SV_blank>failed\" ) ; } clone_flags |= CLONE_NEWCGROUP ; } if ( opt_unshare_cgroup_try ) if ( ! stat ( \"/proc/self/ns/cgroup\" , & sbuf ) ) clone_flags |= CLONE_NEWCGROUP ; child_wait_fd = eventfd ( 0 , EFD_CLOEXEC ) ; if ( child_wait_fd == - 1 ) die_with_error ( \"eventfd()\" ) ; if ( opt_json_status_fd != - 1 ) { int ret ; ret = pipe2 ( setup_finished_pipe , O_CLOEXEC ) ; if ( ret == - 1 ) die_with_error ( \"pipe2()\" ) ; } pid = raw_clone ( clone_flags , NULL ) ; if ( pid == - 1 ) { if ( opt_unshare_user ) { if ( errno == EINVAL ) die ( \"Creating<S2SV_blank>new<S2SV_blank>namespace<S2SV_blank>failed,<S2SV_blank>likely<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>user<S2SV_blank>namespaces.<S2SV_blank><S2SV_blank>bwrap<S2SV_blank>must<S2SV_blank>be<S2SV_blank>installed<S2SV_blank>setuid<S2SV_blank>on<S2SV_blank>such<S2SV_blank>systems.\" ) ; else if ( errno == EPERM && ! is_privileged ) die ( \"No<S2SV_blank>permissions<S2SV_blank>to<S2SV_blank>creating<S2SV_blank>new<S2SV_blank>namespace,<S2SV_blank>likely<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>allow<S2SV_blank>non-privileged<S2SV_blank>user<S2SV_blank>namespaces.<S2SV_blank>On<S2SV_blank>e.g.<S2SV_blank>debian<S2SV_blank>this<S2SV_blank>can<S2SV_blank>be<S2SV_blank>enabled<S2SV_blank>with<S2SV_blank>\\'sysctl<S2SV_blank>kernel.unprivileged_userns_clone=1\\'.\" ) ; } die_with_error ( \"Creating<S2SV_blank>new<S2SV_blank>namespace<S2SV_blank>failed\" ) ; } ns_uid = opt_sandbox_uid ; ns_gid = opt_sandbox_gid ; if ( pid != 0 ) { if ( is_privileged && opt_unshare_user && opt_userns_block_fd == - 1 ) { write_uid_gid_map ( ns_uid , real_uid , ns_gid , real_gid , pid , TRUE , opt_needs_devpts ) ; } drop_privs ( FALSE ) ; handle_die_with_parent ( ) ; if ( opt_info_fd != - 1 ) { cleanup_free char * output = xasprintf ( \"{\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\\\\"child-pid\\\\\":<S2SV_blank>%i\\\\n}\\\\n\" , pid ) ; dump_info ( opt_info_fd , output , TRUE ) ; close ( opt_info_fd ) ; } if ( opt_json_status_fd != - 1 ) { cleanup_free char * output = xasprintf ( \"{<S2SV_blank>\\\\\"child-pid\\\\\":<S2SV_blank>%i<S2SV_blank>}\\\\n\" , pid ) ; dump_info ( opt_json_status_fd , output , TRUE ) ; } if ( opt_userns_block_fd != - 1 ) { char b [ 1 ] ; ( void ) TEMP_FAILURE_RETRY ( read ( opt_userns_block_fd , b , 1 ) ) ; close ( opt_userns_block_fd ) ; } val = 1 ; res = write ( child_wait_fd , & val , 8 ) ; close ( child_wait_fd ) ; return monitor_child ( event_fd , pid , setup_finished_pipe [ 0 ] ) ; } if ( opt_info_fd != - 1 ) close ( opt_info_fd ) ; if ( opt_json_status_fd != - 1 ) close ( opt_json_status_fd ) ; res = read ( child_wait_fd , & val , 8 ) ; close ( child_wait_fd ) ; switch_to_user_with_privs ( ) ; if ( opt_unshare_net ) loopback_setup ( ) ; ns_uid = opt_sandbox_uid ; ns_gid = opt_sandbox_gid ; if ( ! is_privileged && opt_unshare_user && opt_userns_block_fd == - 1 ) { if ( opt_needs_devpts ) { ns_uid = 0 ; ns_gid = 0 ; } write_uid_gid_map ( ns_uid , real_uid , ns_gid , real_gid , - 1 , TRUE , FALSE ) ; } old_umask = umask ( 0 ) ; resolve_symlinks_in_ops ( ) ; if ( mount ( NULL , \"/\" , NULL , MS_SLAVE | MS_REC , NULL ) < 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>/<S2SV_blank>slave\" ) ; if ( mount ( \"tmpfs\" , base_path , \"tmpfs\" , MS_NODEV | MS_NOSUID , NULL ) != 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>tmpfs\" ) ; old_cwd = get_current_dir_name ( ) ; if ( chdir ( base_path ) != 0 ) die_with_error ( \"chdir<S2SV_blank>base_path\" ) ; if ( mkdir ( \"newroot\" , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>newroot<S2SV_blank>failed\" ) ; if ( mount ( \"newroot\" , \"newroot\" , NULL , MS_MGC_VAL | MS_BIND | MS_REC , NULL ) < 0 ) die_with_error ( \"setting<S2SV_blank>up<S2SV_blank>newroot<S2SV_blank>bind\" ) ; if ( mkdir ( \"oldroot\" , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>oldroot<S2SV_blank>failed\" ) ; if ( pivot_root ( base_path , \"oldroot\" ) ) die_with_error ( \"pivot_root\" ) ; if ( chdir ( \"/\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/<S2SV_blank>(base<S2SV_blank>path)\" ) ; if ( is_privileged ) { pid_t child ; int privsep_sockets [ 2 ] ; if ( socketpair ( AF_UNIX , SOCK_SEQPACKET | SOCK_CLOEXEC , 0 , privsep_sockets ) != 0 ) die_with_error ( \"Can\\'t<S2SV_blank>create<S2SV_blank>privsep<S2SV_blank>socket\" ) ; child = fork ( ) ; if ( child == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>fork<S2SV_blank>unprivileged<S2SV_blank>helper\" ) ; if ( child == 0 ) { drop_privs ( FALSE ) ; close ( privsep_sockets [ 0 ] ) ; setup_newroot ( opt_unshare_pid , privsep_sockets [ 1 ] ) ; exit ( 0 ) ; } else { int status ; uint32_t buffer [ 2048 ] ; uint32_t op , flags ; const char * arg1 , * arg2 ; cleanup_fd int unpriv_socket = - 1 ; unpriv_socket = privsep_sockets [ 0 ] ; close ( privsep_sockets [ 1 ] ) ; do { op = read_priv_sec_op ( unpriv_socket , buffer , sizeof ( buffer ) , & flags , & arg1 , & arg2 ) ; privileged_op ( - 1 , op , flags , arg1 , arg2 ) ; if ( write ( unpriv_socket , buffer , 1 ) != 1 ) die ( \"Can\\'t<S2SV_blank>write<S2SV_blank>to<S2SV_blank>op_socket\" ) ; } while ( op != PRIV_SEP_OP_DONE ) ; waitpid ( child , & status , 0 ) ; } } else { setup_newroot ( opt_unshare_pid , - 1 ) ; } close_ops_fd ( ) ; if ( mount ( \"oldroot\" , \"oldroot\" , NULL , MS_REC | MS_PRIVATE , NULL ) != 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>old<S2SV_blank>root<S2SV_blank>rprivate\" ) ; if ( umount2 ( \"oldroot\" , MNT_DETACH ) ) die_with_error ( \"unmount<S2SV_blank>old<S2SV_blank>root\" ) ; { cleanup_fd int oldrootfd = open ( \"/\" , O_DIRECTORY | O_RDONLY ) ; if ( oldrootfd < 0 ) die_with_error ( \"can\\'t<S2SV_blank>open<S2SV_blank>/\" ) ; if ( chdir ( \"/newroot\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/newroot\" ) ; if ( pivot_root ( \".\" , \".\" ) != 0 ) die_with_error ( \"pivot_root(/newroot)\" ) ; if ( fchdir ( oldrootfd ) < 0 ) die_with_error ( \"fchdir<S2SV_blank>to<S2SV_blank>oldroot\" ) ; if ( umount2 ( \".\" , MNT_DETACH ) < 0 ) die_with_error ( \"umount<S2SV_blank>old<S2SV_blank>root\" ) ; if ( chdir ( \"/\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/\" ) ; } if ( opt_unshare_user && ( ns_uid != opt_sandbox_uid || ns_gid != opt_sandbox_gid ) && opt_userns_block_fd == - 1 ) { if ( unshare ( CLONE_NEWUSER ) ) die_with_error ( \"unshare<S2SV_blank>user<S2SV_blank>ns\" ) ; write_uid_gid_map ( opt_sandbox_uid , ns_uid , opt_sandbox_gid , ns_gid , - 1 , FALSE , FALSE ) ; } drop_privs ( ! is_privileged ) ; if ( opt_block_fd != - 1 ) { char b [ 1 ] ; ( void ) TEMP_FAILURE_RETRY ( read ( opt_block_fd , b , 1 ) ) ; close ( opt_block_fd ) ; } if ( opt_seccomp_fd != - 1 ) { seccomp_data = load_file_data ( opt_seccomp_fd , & seccomp_len ) ; if ( seccomp_data == NULL ) die_with_error ( \"Can\\'t<S2SV_blank>read<S2SV_blank>seccomp<S2SV_blank>data\" ) ; if ( seccomp_len % 8 != 0 ) die ( \"Invalid<S2SV_blank>seccomp<S2SV_blank>data,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>8\" ) ; seccomp_prog . len = seccomp_len / 8 ; seccomp_prog . filter = ( struct sock_filter * ) seccomp_data ; close ( opt_seccomp_fd ) ; } umask ( old_umask ) ; new_cwd = \"/\" ; if ( opt_chdir_path ) { if ( chdir ( opt_chdir_path ) ) die_with_error ( \"Can\\'t<S2SV_blank>chdir<S2SV_blank>to<S2SV_blank>%s\" , opt_chdir_path ) ; new_cwd = opt_chdir_path ; } else if ( chdir ( old_cwd ) == 0 ) { new_cwd = old_cwd ; } else { const char * home = getenv ( \"HOME\" ) ; if ( home != NULL && chdir ( home ) == 0 ) new_cwd = home ; } xsetenv ( \"PWD\" , new_cwd , 1 ) ; free ( old_cwd ) ; if ( opt_new_session && setsid ( ) == ( pid_t ) - 1 ) die_with_error ( \"setsid\" ) ; if ( label_exec ( opt_exec_label ) == - 1 ) die_with_error ( \"label_exec<S2SV_blank>%s\" , argv [ 0 ] ) ; __debug__ ( ( \"forking<S2SV_blank>for<S2SV_blank>child\\\\n\" ) ) ; if ( ! opt_as_pid_1 && ( opt_unshare_pid || lock_files != NULL || opt_sync_fd != - 1 ) ) { pid = fork ( ) ; if ( pid == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>fork<S2SV_blank>for<S2SV_blank>pid<S2SV_blank>1\" ) ; if ( pid != 0 ) { drop_all_caps ( FALSE ) ; { int dont_close [ 3 ] ; int j = 0 ; if ( event_fd != - 1 ) dont_close [ j ++ ] = event_fd ; if ( opt_sync_fd != - 1 ) dont_close [ j ++ ] = opt_sync_fd ; dont_close [ j ++ ] = - 1 ; fdwalk ( proc_fd , close_extra_fds , dont_close ) ; } return do_init ( event_fd , pid , seccomp_data != NULL ? & seccomp_prog : NULL ) ; } } __debug__ ( ( \"launch<S2SV_blank>executable<S2SV_blank>%s\\\\n\" , argv [ 0 ] ) ) ; if ( proc_fd != - 1 ) close ( proc_fd ) ; if ( ! opt_as_pid_1 ) { if ( opt_sync_fd != - 1 ) close ( opt_sync_fd ) ; } unblock_sigchild ( ) ; handle_die_with_parent ( ) ; if ( ! is_privileged ) set_ambient_capabilities ( ) ; if ( seccomp_data != NULL && prctl ( PR_SET_SECCOMP , SECCOMP_MODE_FILTER , & seccomp_prog ) != 0 ) die_with_error ( \"prctl(PR_SET_SECCOMP)\" ) ; if ( setup_finished_pipe [ 1 ] != - 1 ) { char data = 0 ; res = write_to_fd ( setup_finished_pipe [ 1 ] , & data , 1 ) ; } if ( execvp ( argv [ 0 ] , argv ) == - 1 ) { if ( setup_finished_pipe [ 1 ] != - 1 ) { int saved_errno = errno ; char data = 0 ; res = write_to_fd ( setup_finished_pipe [ 1 ] , & data , 1 ) ; errno = saved_errno ; } die_with_error ( \"execvp<S2SV_blank>%s\" , argv [ 0 ] ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mode_t old_umask ; const <S2SV_ModEnd> char * base_path <S2SV_ModStart> ; base_path = \"/tmp\" ; <S2SV_ModEnd> __debug__ ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13687\n\n```\nCWE-125 u_int chdlc_if_print ( netdissect_options * ndo , const struct pcap_pkthdr * h , register const u_char * p ) { <S2SV_StartBug> register u_int length = h -> len ; <S2SV_EndBug> register u_int caplen = h -> caplen ; if ( caplen < CHDLC_HDRLEN ) { ND_PRINT ( ( ndo , \"[|chdlc]\" ) ) ; return ( caplen ) ; } <S2SV_StartBug> return ( chdlc_print ( ndo , p , length ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p ) { return <S2SV_ModEnd> chdlc_print ( ndo <S2SV_ModStart> , p , h -> len <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 void nlmsvc_grant_reply ( struct nlm_cookie * cookie , __be32 status ) { struct nlm_block * block ; dprintk ( \"grant_reply:<S2SV_blank>looking<S2SV_blank>for<S2SV_blank>cookie<S2SV_blank>%x,<S2SV_blank>s=%d<S2SV_blank>\\\\n\" , * ( unsigned int * ) ( cookie -> data ) , status ) ; if ( ! ( block = nlmsvc_find_block ( cookie ) ) ) return ; <S2SV_StartBug> if ( block ) { <S2SV_EndBug> if ( status == nlm_lck_denied_grace_period ) { nlmsvc_insert_block ( block , 10 * HZ ) ; } else { nlmsvc_unlink_block ( block ) ; } <S2SV_StartBug> } <S2SV_EndBug> nlmsvc_release_block ( block ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> status == nlm_lck_denied_grace_period <S2SV_ModStart> ) ; } <S2SV_ModEnd> nlmsvc_release_block ( block\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2319\n\n```\nCWE-264 static int hfsplus_readdir ( struct file * filp , void * dirent , filldir_t filldir ) { struct inode * inode = filp -> f_path . dentry -> d_inode ; struct super_block * sb = inode -> i_sb ; int len , err ; char strbuf [ HFSPLUS_MAX_STRLEN + 1 ] ; hfsplus_cat_entry entry ; struct hfs_find_data fd ; struct hfsplus_readdir_data * rd ; u16 type ; if ( filp -> f_pos >= inode -> i_size ) return 0 ; err = hfs_find_init ( HFSPLUS_SB ( sb ) -> cat_tree , & fd ) ; if ( err ) return err ; hfsplus_cat_build_key ( sb , fd . search_key , inode -> i_ino , NULL ) ; err = hfs_brec_find ( & fd ) ; if ( err ) goto out ; switch ( ( u32 ) filp -> f_pos ) { case 0 : if ( filldir ( dirent , \".\" , 1 , 0 , inode -> i_ino , DT_DIR ) ) goto out ; filp -> f_pos ++ ; case 1 : <S2SV_StartBug> hfs_bnode_read ( fd . bnode , & entry , fd . entryoffset , <S2SV_EndBug> fd . entrylength ) ; if ( be16_to_cpu ( entry . type ) != HFSPLUS_FOLDER_THREAD ) { printk ( KERN_ERR \"hfs:<S2SV_blank>bad<S2SV_blank>catalog<S2SV_blank>folder<S2SV_blank>thread\\\\n\" ) ; err = - EIO ; goto out ; } if ( fd . entrylength < HFSPLUS_MIN_THREAD_SZ ) { printk ( KERN_ERR \"hfs:<S2SV_blank>truncated<S2SV_blank>catalog<S2SV_blank>thread\\\\n\" ) ; err = - EIO ; goto out ; } if ( filldir ( dirent , \"..\" , 2 , 1 , be32_to_cpu ( entry . thread . parentID ) , DT_DIR ) ) goto out ; filp -> f_pos ++ ; default : if ( filp -> f_pos >= inode -> i_size ) goto out ; err = hfs_brec_goto ( & fd , filp -> f_pos - 1 ) ; if ( err ) goto out ; } for ( ; ; ) { if ( be32_to_cpu ( fd . key -> cat . parent ) != inode -> i_ino ) { printk ( KERN_ERR \"hfs:<S2SV_blank>walked<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>dir\\\\n\" ) ; err = - EIO ; goto out ; } <S2SV_StartBug> hfs_bnode_read ( fd . bnode , & entry , fd . entryoffset , <S2SV_EndBug> fd . entrylength ) ; type = be16_to_cpu ( entry . type ) ; len = HFSPLUS_MAX_STRLEN ; err = hfsplus_uni2asc ( sb , & fd . key -> cat . name , strbuf , & len ) ; if ( err ) goto out ; if ( type == HFSPLUS_FOLDER ) { if ( fd . entrylength < sizeof ( struct hfsplus_cat_folder ) ) { printk ( KERN_ERR \"hfs:<S2SV_blank>small<S2SV_blank>dir<S2SV_blank>entry\\\\n\" ) ; err = - EIO ; goto out ; } if ( HFSPLUS_SB ( sb ) -> hidden_dir && HFSPLUS_SB ( sb ) -> hidden_dir -> i_ino == be32_to_cpu ( entry . folder . id ) ) goto next ; if ( filldir ( dirent , strbuf , len , filp -> f_pos , be32_to_cpu ( entry . folder . id ) , DT_DIR ) ) break ; } else if ( type == HFSPLUS_FILE ) { if ( fd . entrylength < sizeof ( struct hfsplus_cat_file ) ) { printk ( KERN_ERR \"hfs:<S2SV_blank>small<S2SV_blank>file<S2SV_blank>entry\\\\n\" ) ; err = - EIO ; goto out ; } if ( filldir ( dirent , strbuf , len , filp -> f_pos , be32_to_cpu ( entry . file . id ) , DT_REG ) ) break ; } else { printk ( KERN_ERR \"hfs:<S2SV_blank>bad<S2SV_blank>catalog<S2SV_blank>entry<S2SV_blank>type\\\\n\" ) ; err = - EIO ; goto out ; } next : filp -> f_pos ++ ; if ( filp -> f_pos >= inode -> i_size ) goto out ; err = hfs_brec_goto ( & fd , 1 ) ; if ( err ) goto out ; } rd = filp -> private_data ; if ( ! rd ) { rd = kmalloc ( sizeof ( struct hfsplus_readdir_data ) , GFP_KERNEL ) ; if ( ! rd ) { err = - ENOMEM ; goto out ; } filp -> private_data = rd ; rd -> file = filp ; list_add ( & rd -> list , & HFSPLUS_I ( inode ) -> open_dir_list ) ; } memcpy ( & rd -> key , fd . key , sizeof ( struct hfsplus_cat_key ) ) ; out : hfs_find_exit ( & fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 1 : if ( fd . entrylength > sizeof ( entry ) || fd . entrylength < 0 ) { err = - EIO ; goto out ; } <S2SV_ModStart> out ; } if ( fd . entrylength > sizeof ( entry ) || fd . entrylength < 0 ) { err = - EIO ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9387\n\n```\nCWE-190 static int jpc_dec_process_siz ( jpc_dec_t * dec , jpc_ms_t * ms ) { jpc_siz_t * siz = & ms -> parms . siz ; int compno ; int tileno ; jpc_dec_tile_t * tile ; jpc_dec_tcomp_t * tcomp ; int htileno ; int vtileno ; jpc_dec_cmpt_t * cmpt ; <S2SV_StartBug> dec -> xstart = siz -> xoff ; <S2SV_EndBug> dec -> ystart = siz -> yoff ; dec -> xend = siz -> width ; dec -> yend = siz -> height ; dec -> tilewidth = siz -> tilewidth ; dec -> tileheight = siz -> tileheight ; dec -> tilexoff = siz -> tilexoff ; dec -> tileyoff = siz -> tileyoff ; dec -> numcomps = siz -> numcomps ; if ( ! ( dec -> cp = jpc_dec_cp_create ( dec -> numcomps ) ) ) { return - 1 ; } if ( ! ( dec -> cmpts = jas_alloc2 ( dec -> numcomps , sizeof ( jpc_dec_cmpt_t ) ) ) ) { return - 1 ; } for ( compno = 0 , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ cmpt ) { cmpt -> prec = siz -> comps [ compno ] . prec ; cmpt -> sgnd = siz -> comps [ compno ] . sgnd ; cmpt -> hstep = siz -> comps [ compno ] . hsamp ; cmpt -> vstep = siz -> comps [ compno ] . vsamp ; cmpt -> width = JPC_CEILDIV ( dec -> xend , cmpt -> hstep ) - JPC_CEILDIV ( dec -> xstart , cmpt -> hstep ) ; cmpt -> height = JPC_CEILDIV ( dec -> yend , cmpt -> vstep ) - JPC_CEILDIV ( dec -> ystart , cmpt -> vstep ) ; cmpt -> hsubstep = 0 ; cmpt -> vsubstep = 0 ; } dec -> image = 0 ; dec -> numhtiles = JPC_CEILDIV ( dec -> xend - dec -> tilexoff , dec -> tilewidth ) ; dec -> numvtiles = JPC_CEILDIV ( dec -> yend - dec -> tileyoff , dec -> tileheight ) ; <S2SV_StartBug> dec -> numtiles = dec -> numhtiles * dec -> numvtiles ; <S2SV_EndBug> JAS_DBGLOG ( 10 , ( \"numtiles<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>numhtiles<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>numvtiles<S2SV_blank>=<S2SV_blank>%d;\\\\n\" , dec -> numtiles , dec -> numhtiles , dec -> numvtiles ) ) ; if ( ! ( dec -> tiles = jas_alloc2 ( dec -> numtiles , sizeof ( jpc_dec_tile_t ) ) ) ) { return - 1 ; } <S2SV_StartBug> for ( tileno = 0 , tile = dec -> tiles ; tileno < dec -> numtiles ; ++ tileno , <S2SV_EndBug> ++ tile ) { htileno = tileno % dec -> numhtiles ; vtileno = tileno / dec -> numhtiles ; tile -> realmode = 0 ; tile -> state = JPC_TILE_INIT ; tile -> xstart = JAS_MAX ( dec -> tilexoff + htileno * dec -> tilewidth , dec -> xstart ) ; tile -> ystart = JAS_MAX ( dec -> tileyoff + vtileno * dec -> tileheight , dec -> ystart ) ; tile -> xend = JAS_MIN ( dec -> tilexoff + ( htileno + 1 ) * dec -> tilewidth , dec -> xend ) ; tile -> yend = JAS_MIN ( dec -> tileyoff + ( vtileno + 1 ) * dec -> tileheight , dec -> yend ) ; tile -> numparts = 0 ; tile -> partno = 0 ; tile -> pkthdrstream = 0 ; tile -> pkthdrstreampos = 0 ; tile -> pptstab = 0 ; tile -> cp = 0 ; tile -> pi = 0 ; if ( ! ( tile -> tcomps = jas_alloc2 ( dec -> numcomps , sizeof ( jpc_dec_tcomp_t ) ) ) ) { return - 1 ; } for ( compno = 0 , cmpt = dec -> cmpts , tcomp = tile -> tcomps ; compno < dec -> numcomps ; ++ compno , ++ cmpt , ++ tcomp ) { tcomp -> rlvls = 0 ; tcomp -> numrlvls = 0 ; tcomp -> data = 0 ; tcomp -> xstart = JPC_CEILDIV ( tile -> xstart , cmpt -> hstep ) ; tcomp -> ystart = JPC_CEILDIV ( tile -> ystart , cmpt -> vstep ) ; tcomp -> xend = JPC_CEILDIV ( tile -> xend , cmpt -> hstep ) ; tcomp -> yend = JPC_CEILDIV ( tile -> yend , cmpt -> vstep ) ; tcomp -> tsfb = 0 ; } } dec -> pkthdrstreams = 0 ; dec -> state = JPC_MH ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cmpt ; size_t size ; <S2SV_ModStart> tileheight ) ; if ( ! jas_safe_size_mul ( <S2SV_ModEnd> dec -> numhtiles <S2SV_ModStart> dec -> numhtiles , <S2SV_ModEnd> dec -> numvtiles <S2SV_ModStart> dec -> numvtiles , & size <S2SV_ModEnd> ) ) { <S2SV_ModStart> 1 ; } dec -> numtiles = size ; JAS_DBGLOG ( 10 , ( \"numtiles<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>numhtiles<S2SV_blank>=<S2SV_blank>%d;<S2SV_blank>numvtiles<S2SV_blank>=<S2SV_blank>%d;\\\\n\" , dec -> numtiles , dec -> numhtiles , dec -> numvtiles ) ) ; if ( ! ( dec -> tiles = jas_alloc2 ( dec -> numtiles , sizeof ( jpc_dec_tile_t ) ) ) ) { return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6541\n\n```\nCWE-200 static int ccid3_hc_tx_getsockopt ( struct sock * sk , const int optname , int len , u32 __user * optval , int __user * optlen ) { const struct ccid3_hc_tx_sock * hc = ccid3_hc_tx_sk ( sk ) ; struct tfrc_tx_info tfrc ; const void * val ; switch ( optname ) { case DCCP_SOCKOPT_CCID_TX_INFO : if ( len < sizeof ( tfrc ) ) return - EINVAL ; <S2SV_StartBug> tfrc . tfrctx_x = hc -> tx_x ; <S2SV_EndBug> tfrc . tfrctx_x_recv = hc -> tx_x_recv ; tfrc . tfrctx_x_calc = hc -> tx_x_calc ; tfrc . tfrctx_rtt = hc -> tx_rtt ; tfrc . tfrctx_p = hc -> tx_p ; tfrc . tfrctx_rto = hc -> tx_t_rto ; tfrc . tfrctx_ipi = hc -> tx_t_ipi ; len = sizeof ( tfrc ) ; val = & tfrc ; break ; default : return - ENOPROTOOPT ; } if ( put_user ( len , optlen ) || copy_to_user ( optval , val , len ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EINVAL ; memset ( & tfrc , 0 , sizeof ( tfrc ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8012\n\n```\nCWE-617 struct lldpd_mgmt * lldpd_alloc_mgmt ( int family , void * addrptr , size_t addrsize , u_int32_t iface ) { struct lldpd_mgmt * mgmt ; log_debug ( \"alloc\" , \"allocate<S2SV_blank>a<S2SV_blank>new<S2SV_blank>management<S2SV_blank>address<S2SV_blank>(family:<S2SV_blank>%d)\" , family ) ; if ( family <= LLDPD_AF_UNSPEC || family >= LLDPD_AF_LAST ) { errno = EAFNOSUPPORT ; return NULL ; } if ( addrsize > LLDPD_MGMT_MAXADDRSIZE ) { errno = EOVERFLOW ; return NULL ; } mgmt = calloc ( 1 , sizeof ( struct lldpd_mgmt ) ) ; if ( mgmt == NULL ) { errno = ENOMEM ; return NULL ; } mgmt -> m_family = family ; <S2SV_StartBug> assert ( addrsize <= LLDPD_MGMT_MAXADDRSIZE ) ; <S2SV_EndBug> memcpy ( & mgmt -> m_addr , addrptr , addrsize ) ; mgmt -> m_addrsize = addrsize ; mgmt -> m_iface = iface ; return mgmt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = family ; <S2SV_ModEnd> memcpy ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 static int jp2_pclr_getdata ( jp2_box_t * box , jas_stream_t * in ) { jp2_pclr_t * pclr = & box -> data . pclr ; int lutsize ; unsigned int i ; unsigned int j ; int_fast32_t x ; pclr -> lutdata = 0 ; <S2SV_StartBug> if ( jp2_getuint16 ( in , & pclr -> numlutents ) || <S2SV_EndBug> jp2_getuint8 ( in , & pclr -> numchans ) ) { return - 1 ; } lutsize = pclr -> numlutents * pclr -> numchans ; if ( ! ( pclr -> lutdata = jas_alloc2 ( lutsize , sizeof ( int_fast32_t ) ) ) ) { return - 1 ; } if ( ! ( pclr -> bpc = jas_alloc2 ( pclr -> numchans , sizeof ( uint_fast8_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < pclr -> numchans ; ++ i ) { if ( jp2_getuint8 ( in , & pclr -> bpc [ i ] ) ) { return - 1 ; } } for ( i = 0 ; i < pclr -> numlutents ; ++ i ) { for ( j = 0 ; j < pclr -> numchans ; ++ j ) { if ( jp2_getint ( in , ( pclr -> bpc [ j ] & 0x80 ) != 0 , ( pclr -> bpc [ j ] & 0x7f ) + 1 , & x ) ) { return - 1 ; } pclr -> lutdata [ i * pclr -> numchans + j ] = x ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; pclr -> bpc = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_fht4x4_c ( const int16_t * input , int16_t * output , <S2SV_EndBug> int stride , int tx_type ) { if ( tx_type == DCT_DCT ) { <S2SV_StartBug> vp9_fdct4x4_c ( input , output , stride ) ; <S2SV_EndBug> } else { <S2SV_StartBug> int16_t out [ 4 * 4 ] ; <S2SV_EndBug> <S2SV_StartBug> int16_t * outptr = & out [ 0 ] ; <S2SV_EndBug> int i , j ; <S2SV_StartBug> int16_t temp_in [ 4 ] , temp_out [ 4 ] ; <S2SV_EndBug> const transform_2d ht = FHT_4 [ tx_type ] ; for ( i = 0 ; i < 4 ; ++ i ) { for ( j = 0 ; j < 4 ; ++ j ) temp_in [ j ] = input [ j * stride + i ] * 16 ; if ( i == 0 && temp_in [ 0 ] ) temp_in [ 0 ] += 1 ; ht . cols ( temp_in , temp_out ) ; for ( j = 0 ; j < 4 ; ++ j ) <S2SV_StartBug> outptr [ j * 4 + i ] = temp_out [ j ] ; <S2SV_EndBug> } for ( i = 0 ; i < 4 ; ++ i ) { for ( j = 0 ; j < 4 ; ++ j ) temp_in [ j ] = out [ j + i * 4 ] ; ht . rows ( temp_in , temp_out ) ; for ( j = 0 ; j < 4 ; ++ j ) output [ j + i * 4 ] = ( temp_out [ j ] + 1 ) >> 2 ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * input , tran_low_t <S2SV_ModEnd> * output , <S2SV_ModStart> DCT_DCT ) { vpx_fdct4x4_c <S2SV_ModEnd> ( input , <S2SV_ModStart> } else { tran_low_t <S2SV_ModEnd> out [ 4 <S2SV_ModStart> 4 ] ; <S2SV_ModEnd> int i , <S2SV_ModStart> , j ; tran_low_t <S2SV_ModEnd> temp_in [ 4 <S2SV_ModStart> ++ j ) out <S2SV_ModEnd> [ j *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14169\n\n```\nCWE-20 static int mxf_read_primer_pack ( void * arg , AVIOContext * pb , int tag , int size , UID uid , int64_t klv_offset ) { MXFContext * mxf = arg ; int item_num = avio_rb32 ( pb ) ; int item_len = avio_rb32 ( pb ) ; if ( item_len != 18 ) { avpriv_request_sample ( pb , \"Primer<S2SV_blank>pack<S2SV_blank>item<S2SV_blank>length<S2SV_blank>%d\" , item_len ) ; return AVERROR_PATCHWELCOME ; } <S2SV_StartBug> if ( item_num > 65536 ) { <S2SV_EndBug> av_log ( mxf -> fc , AV_LOG_ERROR , \"item_num<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large\\\\n\" , item_num ) ; return AVERROR_INVALIDDATA ; } if ( mxf -> local_tags ) av_log ( mxf -> fc , AV_LOG_VERBOSE , \"Multiple<S2SV_blank>primer<S2SV_blank>packs\\\\n\" ) ; av_free ( mxf -> local_tags ) ; mxf -> local_tags_count = 0 ; mxf -> local_tags = av_calloc ( item_num , item_len ) ; if ( ! mxf -> local_tags ) return AVERROR ( ENOMEM ) ; mxf -> local_tags_count = item_num ; avio_read ( pb , mxf -> local_tags , item_num * item_len ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> item_num > 65536 || item_num < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 l_int32 gplotMakeOutput ( GPLOT * gplot ) { <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> char * cmdname ; l_int32 ignore ; PROCNAME ( \"gplotMakeOutput\" ) ; if ( ! gplot ) return ERROR_INT ( \"gplot<S2SV_blank>not<S2SV_blank>defined\" , procName , 1 ) ; gplotGenCommandFile ( gplot ) ; gplotGenDataFiles ( gplot ) ; cmdname = genPathname ( gplot -> cmdname , NULL ) ; # ifndef _WIN32 <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"gnuplot<S2SV_blank>%s\" , cmdname ) ; <S2SV_EndBug> # else <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"wgnuplot<S2SV_blank>%s\" , cmdname ) ; <S2SV_EndBug> # endif # ifndef OS_IOS ignore = system ( buf ) ; # endif LEPT_FREE ( cmdname ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"gnuplot<S2SV_blank>%s\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"wgnuplot<S2SV_blank>%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2007-6761\n\n```\nCWE-119 static void videobuf_vm_close ( struct vm_area_struct * vma ) { struct videobuf_mapping * map = vma -> vm_private_data ; struct videobuf_queue * q = map -> q ; int i ; <S2SV_StartBug> dprintk ( 2 , \"vm_close<S2SV_blank>%p<S2SV_blank>[count=%d,vma=%08lx-%08lx]\\\\n\" , map , <S2SV_EndBug> map -> count , vma -> vm_start , vma -> vm_end ) ; map -> count -- ; if ( 0 == map -> count ) { dprintk ( 1 , \"munmap<S2SV_blank>%p<S2SV_blank>q=%p\\\\n\" , map , q ) ; mutex_lock ( & q -> lock ) ; for ( i = 0 ; i < VIDEO_MAX_FRAME ; i ++ ) { if ( NULL == q -> bufs [ i ] ) continue ; if ( q -> bufs [ i ] -> map != map ) continue ; q -> ops -> buf_release ( q , q -> bufs [ i ] ) ; q -> bufs [ i ] -> map = NULL ; q -> bufs [ i ] -> baddr = 0 ; } mutex_unlock ( & q -> lock ) ; kfree ( map ) ; } return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 2 , \"vm_close<S2SV_blank>%p<S2SV_blank>[count=%u,vma=%08lx-%08lx]\\\\n\" <S2SV_ModEnd> , map ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> static const char * parse_array ( cJSON * item , const char * value ) <S2SV_EndBug> { cJSON * child ; if ( * value != '[' ) { <S2SV_StartBug> ep = value ; <S2SV_EndBug> return 0 ; } item -> type = cJSON_Array ; value = skip ( value + 1 ) ; if ( * value == ']' ) <S2SV_StartBug> return value + 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( item -> child = child = cJSON_New_Item ( ) ) ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> if ( ! ( value = skip ( parse_value ( child , skip ( value ) ) ) ) ) <S2SV_EndBug> return 0 ; while ( * value == ',' ) { cJSON * new_item ; if ( ! ( new_item = cJSON_New_Item ( ) ) ) return 0 ; child -> next = new_item ; new_item -> prev = child ; <S2SV_StartBug> child = new_item ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( value = skip ( parse_value ( child , skip ( value + 1 ) ) ) ) ) <S2SV_EndBug> return 0 ; } if ( * value == ']' ) <S2SV_StartBug> return value + 1 ; <S2SV_EndBug> ep = value ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * value , const char * * ep <S2SV_ModStart> '[' ) { * ep = value ; return 0 ; <S2SV_ModEnd> } item -> <S2SV_ModStart> == ']' ) return value + 1 ; <S2SV_ModEnd> item -> child <S2SV_ModStart> cJSON_New_Item ( ) ; if ( ! item -> child ) return 0 ; <S2SV_ModEnd> value = skip <S2SV_ModStart> ( value ) , ep ) ) ; if ( ! value ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> = child ; child = new_item ; <S2SV_ModEnd> value = skip <S2SV_ModStart> + 1 ) , ep ) ) ; if ( ! value ) <S2SV_ModEnd> return 0 ; <S2SV_ModStart> == ']' ) return value + 1 ; * ep = value ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9059\n\n```\nCWE-77 int <S2SV_StartBug> run_cmd ( int fd , ... ) <S2SV_EndBug> { pid_t pid ; sigset_t sigm , sigm_old ; sigemptyset ( & sigm ) ; sigaddset ( & sigm , SIGTERM ) ; sigprocmask ( SIG_BLOCK , & sigm , & sigm_old ) ; pid = fork ( ) ; if ( pid < 0 ) { sigprocmask ( SIG_SETMASK , & sigm_old , NULL ) ; fd_printf ( STO , \"***<S2SV_blank>cannot<S2SV_blank>fork:<S2SV_blank>%s<S2SV_blank>***\\\\r\\\\n\" , strerror ( errno ) ) ; return - 1 ; } else if ( pid ) { int status , r ; sigprocmask ( SIG_SETMASK , & sigm_old , NULL ) ; do { r = waitpid ( pid , & status , 0 ) ; } while ( r < 0 && errno == EINTR ) ; term_apply ( STI ) ; if ( WIFEXITED ( status ) ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>exit<S2SV_blank>status:<S2SV_blank>%d<S2SV_blank>***\\\\r\\\\n\" , WEXITSTATUS ( status ) ) ; return WEXITSTATUS ( status ) ; } else if ( WIFSIGNALED ( status ) ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>signal:<S2SV_blank>%d<S2SV_blank>***\\\\r\\\\n\" , WTERMSIG ( status ) ) ; return - 1 ; } else { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>abnormal<S2SV_blank>termination:<S2SV_blank>0x%x<S2SV_blank>***\\\\r\\\\n\" , r ) ; return - 1 ; } } else { long fl ; <S2SV_StartBug> char cmd [ 512 ] ; <S2SV_EndBug> term_remove ( STI ) ; term_erase ( fd ) ; fl = fcntl ( fd , F_GETFL ) ; fl &= ~ O_NONBLOCK ; fcntl ( fd , F_SETFL , fl ) ; close ( STI ) ; close ( STO ) ; dup2 ( fd , STI ) ; dup2 ( fd , STO ) ; <S2SV_StartBug> { <S2SV_EndBug> char * c , * ce ; const char * s ; int n ; va_list vls ; <S2SV_StartBug> strcpy ( cmd , EXEC ) ; <S2SV_EndBug> c = & cmd [ sizeof ( EXEC ) - 1 ] ; ce = cmd + sizeof ( cmd ) - 1 ; va_start ( vls , fd ) ; while ( ( s = va_arg ( vls , const char * ) ) ) { n = strlen ( s ) ; if ( c + n + 1 >= ce ) break ; memcpy ( c , s , n ) ; c += n ; * c ++ = '<S2SV_blank>' ; } va_end ( vls ) ; * c = '\\\\0' ; } <S2SV_StartBug> fd_printf ( STDERR_FILENO , \"%s\\\\n\" , & cmd [ sizeof ( EXEC ) - 1 ] ) ; <S2SV_EndBug> establish_child_signal_handlers ( ) ; sigprocmask ( SIG_SETMASK , & sigm_old , NULL ) ; execl ( \"/bin/sh\" , \"sh\" , \"-c\" , cmd , NULL ) ; <S2SV_StartBug> exit ( 42 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int fd , const char * cmd , const char * args_extra <S2SV_ModEnd> ) { pid_t <S2SV_ModStart> long fl ; int argc ; char * argv [ RUNCMD_ARGS_MAX + 1 ] ; int r <S2SV_ModEnd> ; term_remove ( <S2SV_ModStart> STO ) ; argc = 0 ; r = split_quoted <S2SV_ModEnd> ( cmd , <S2SV_ModStart> ( cmd , & argc , argv , RUNCMD_ARGS_MAX ) ; if ( r < 0 ) { fd_printf ( STDERR_FILENO , \"Cannot<S2SV_blank>parse<S2SV_blank>command\\\\n\" ) ; exit ( RUNCMD_EXEC_FAIL ) ; } r = split_quoted ( args_extra , & argc , argv , RUNCMD_ARGS_MAX ) ; if ( r < 0 ) { fd_printf ( STDERR_FILENO , \"Cannot<S2SV_blank>parse<S2SV_blank>extra<S2SV_blank>args\\\\n\" ) ; exit ( RUNCMD_EXEC_FAIL ) ; } if ( argc < 1 ) { fd_printf ( STDERR_FILENO , \"No<S2SV_blank>command<S2SV_blank>given\\\\n\" ) ; exit ( RUNCMD_EXEC_FAIL ) ; } argv [ argc ] = NULL ; fd_printf ( STDERR_FILENO , \"$<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , cmd , args_extra ) ; establish_child_signal_handlers ( ) ; sigprocmask ( SIG_SETMASK , & sigm_old , NULL ) ; execvp ( argv [ 0 ] , argv ) ; <S2SV_ModEnd> fd_printf ( STDERR_FILENO <S2SV_ModStart> ( STDERR_FILENO , \"exec:<S2SV_blank>%s\\\\n\" , strerror ( errno ) <S2SV_ModEnd> ) ; exit <S2SV_ModStart> ; exit ( RUNCMD_EXEC_FAIL <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7348\n\n```\nCWE-399 static struct kioctx * ioctx_alloc ( unsigned nr_events ) { struct mm_struct * mm = current -> mm ; struct kioctx * ctx ; int err = - ENOMEM ; nr_events = max ( nr_events , num_possible_cpus ( ) * 4 ) ; nr_events *= 2 ; if ( ( nr_events > ( 0x10000000U / sizeof ( struct io_event ) ) ) || ( nr_events > ( 0x10000000U / sizeof ( struct kiocb ) ) ) ) { pr_debug ( \"ENOMEM:<S2SV_blank>nr_events<S2SV_blank>too<S2SV_blank>high\\\\n\" ) ; return ERR_PTR ( - EINVAL ) ; } if ( ! nr_events || ( unsigned long ) nr_events > ( aio_max_nr * 2UL ) ) return ERR_PTR ( - EAGAIN ) ; ctx = kmem_cache_zalloc ( kioctx_cachep , GFP_KERNEL ) ; if ( ! ctx ) return ERR_PTR ( - ENOMEM ) ; ctx -> max_reqs = nr_events ; if ( percpu_ref_init ( & ctx -> users , free_ioctx_users ) ) goto err ; if ( percpu_ref_init ( & ctx -> reqs , free_ioctx_reqs ) ) goto err ; spin_lock_init ( & ctx -> ctx_lock ) ; spin_lock_init ( & ctx -> completion_lock ) ; mutex_init ( & ctx -> ring_lock ) ; init_waitqueue_head ( & ctx -> wait ) ; INIT_LIST_HEAD ( & ctx -> active_reqs ) ; ctx -> cpu = alloc_percpu ( struct kioctx_cpu ) ; if ( ! ctx -> cpu ) goto err ; if ( aio_setup_ring ( ctx ) < 0 ) goto err ; atomic_set ( & ctx -> reqs_available , ctx -> nr_events - 1 ) ; ctx -> req_batch = ( ctx -> nr_events - 1 ) / ( num_possible_cpus ( ) * 4 ) ; if ( ctx -> req_batch < 1 ) ctx -> req_batch = 1 ; spin_lock ( & aio_nr_lock ) ; if ( aio_nr + nr_events > ( aio_max_nr * 2UL ) || aio_nr + nr_events < aio_nr ) { spin_unlock ( & aio_nr_lock ) ; err = - EAGAIN ; goto err ; } aio_nr += ctx -> max_reqs ; spin_unlock ( & aio_nr_lock ) ; percpu_ref_get ( & ctx -> users ) ; err = ioctx_add_table ( ctx , mm ) ; if ( err ) goto err_cleanup ; pr_debug ( \"allocated<S2SV_blank>ioctx<S2SV_blank>%p[%ld]:<S2SV_blank>mm=%p<S2SV_blank>mask=0x%x\\\\n\" , ctx , ctx -> user_id , mm , ctx -> nr_events ) ; return ctx ; err_cleanup : aio_nr_sub ( ctx -> max_reqs ) ; err : <S2SV_StartBug> aio_free_ring ( ctx ) ; <S2SV_EndBug> free_percpu ( ctx -> cpu ) ; free_percpu ( ctx -> reqs . pcpu_count ) ; free_percpu ( ctx -> users . pcpu_count ) ; kmem_cache_free ( kioctx_cachep , ctx ) ; pr_debug ( \"error<S2SV_blank>allocating<S2SV_blank>ioctx<S2SV_blank>%d\\\\n\" , err ) ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; err : <S2SV_ModEnd> free_percpu ( ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9390\n\n```\nCWE-20 static int jpc_siz_getparms ( jpc_ms_t * ms , jpc_cstate_t * cstate , jas_stream_t * in ) { jpc_siz_t * siz = & ms -> parms . siz ; unsigned int i ; uint_fast8_t tmp ; cstate = 0 ; if ( jpc_getuint16 ( in , & siz -> caps ) || jpc_getuint32 ( in , & siz -> width ) || jpc_getuint32 ( in , & siz -> height ) || jpc_getuint32 ( in , & siz -> xoff ) || jpc_getuint32 ( in , & siz -> yoff ) || jpc_getuint32 ( in , & siz -> tilewidth ) || jpc_getuint32 ( in , & siz -> tileheight ) || jpc_getuint32 ( in , & siz -> tilexoff ) || jpc_getuint32 ( in , & siz -> tileyoff ) || jpc_getuint16 ( in , & siz -> numcomps ) ) { return - 1 ; } if ( ! siz -> width || ! siz -> height || ! siz -> tilewidth || ! siz -> tileheight || ! siz -> numcomps || siz -> numcomps > 16384 ) { return - 1 ; } <S2SV_StartBug> if ( ! ( siz -> comps = jas_alloc2 ( siz -> numcomps , sizeof ( jpc_sizcomp_t ) ) ) ) { <S2SV_EndBug> return - 1 ; } for ( i = 0 ; i < siz -> numcomps ; ++ i ) { if ( jpc_getuint8 ( in , & tmp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . hsamp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . vsamp ) ) { jas_free ( siz -> comps ) ; return - 1 ; } if ( siz -> comps [ i ] . hsamp == 0 || siz -> comps [ i ] . hsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>XRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . hsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; } if ( siz -> comps [ i ] . vsamp == 0 || siz -> comps [ i ] . vsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>YRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . vsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; } siz -> comps [ i ] . sgnd = ( tmp >> 7 ) & 1 ; siz -> comps [ i ] . prec = ( tmp & 0x7f ) + 1 ; } if ( jas_stream_eof ( in ) ) { jas_free ( siz -> comps ) ; return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( siz -> tilexoff >= siz -> width || siz -> tileyoff >= siz -> height ) { jas_eprintf ( \"all<S2SV_blank>tiles<S2SV_blank>are<S2SV_blank>outside<S2SV_blank>the<S2SV_blank>image<S2SV_blank>area\\\\n\" ) ; return - 1 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12146\n\n```\nCWE-362 static ssize_t driver_override_store ( struct device * dev , struct device_attribute * attr , const char * buf , size_t count ) { struct platform_device * pdev = to_platform_device ( dev ) ; <S2SV_StartBug> char * driver_override , * old = pdev -> driver_override , * cp ; <S2SV_EndBug> if ( count > PATH_MAX ) return - EINVAL ; driver_override = kstrndup ( buf , count , GFP_KERNEL ) ; if ( ! driver_override ) return - ENOMEM ; cp = strchr ( driver_override , '\\\\n' ) ; if ( cp ) * cp = '\\\\0' ; <S2SV_StartBug> if ( strlen ( driver_override ) ) { <S2SV_EndBug> pdev -> driver_override = driver_override ; } else { kfree ( driver_override ) ; pdev -> driver_override = NULL ; } <S2SV_StartBug> kfree ( old ) ; <S2SV_EndBug> return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * old <S2SV_ModEnd> , * cp <S2SV_ModStart> = '\\\\0' ; device_lock ( dev ) ; old = pdev -> driver_override ; <S2SV_ModStart> NULL ; } device_unlock ( dev ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5356\n\n```\nCWE-119 static gboolean parse_cosine_packet ( FILE_T fh , struct wtap_pkthdr * phdr , Buffer * buf , char * line , int * err , gchar * * err_info ) { union wtap_pseudo_header * pseudo_header = & phdr -> pseudo_header ; int num_items_scanned ; <S2SV_StartBug> int yy , mm , dd , hr , min , sec , csec ; <S2SV_EndBug> guint pkt_len ; int pro , off , pri , rm , error ; guint code1 , code2 ; char if_name [ COSINE_MAX_IF_NAME_LEN ] = \"\" , direction [ 6 ] = \"\" ; struct tm tm ; guint8 * pd ; int i , hex_lines , n , caplen = 0 ; if ( sscanf ( line , \"%4d-%2d-%2d,%2d:%2d:%2d.%9d:\" , & yy , & mm , & dd , & hr , & min , & sec , & csec ) == 7 ) { num_items_scanned = sscanf ( line , <S2SV_StartBug> \"%4d-%2d-%2d,%2d:%2d:%2d.%9d:<S2SV_blank>%5s<S2SV_blank>(%127[A-Za-z0-9/:]),<S2SV_blank>Length:%9u,<S2SV_blank>Pro:%9d,<S2SV_blank>Off:%9d,<S2SV_blank>Pri:%9d,<S2SV_blank>RM:%9d,<S2SV_blank>Err:%9d<S2SV_blank>[%8x,<S2SV_blank>%8x]\" , <S2SV_EndBug> & yy , & mm , & dd , & hr , & min , & sec , & csec , direction , if_name , & pkt_len , & pro , & off , & pri , & rm , & error , & code1 , & code2 ) ; if ( num_items_scanned != 17 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"cosine:<S2SV_blank>purported<S2SV_blank>control<S2SV_blank>blade<S2SV_blank>line<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>code<S2SV_blank>values\" ) ; return FALSE ; } } else { num_items_scanned = sscanf ( line , <S2SV_StartBug> \"%5s<S2SV_blank>(%127[A-Za-z0-9/:]),<S2SV_blank>Length:%9u,<S2SV_blank>Pro:%9d,<S2SV_blank>Off:%9d,<S2SV_blank>Pri:%9d,<S2SV_blank>RM:%9d,<S2SV_blank>Err:%9d<S2SV_blank>[%8x,<S2SV_blank>%8x]\" , <S2SV_EndBug> direction , if_name , & pkt_len , & pro , & off , & pri , & rm , & error , & code1 , & code2 ) ; if ( num_items_scanned != 10 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"cosine:<S2SV_blank>header<S2SV_blank>line<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>control<S2SV_blank>blade<S2SV_blank>nor<S2SV_blank>PE<S2SV_blank>output\" ) ; return FALSE ; } <S2SV_StartBug> yy = mm = dd = hr = min = sec = csec = 0 ; <S2SV_EndBug> } if ( pkt_len > WTAP_MAX_PACKET_SIZE ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup_printf ( \"cosine:<S2SV_blank>File<S2SV_blank>has<S2SV_blank>%u-byte<S2SV_blank>packet,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>maximum<S2SV_blank>of<S2SV_blank>%u\" , pkt_len , WTAP_MAX_PACKET_SIZE ) ; return FALSE ; } phdr -> rec_type = REC_TYPE_PACKET ; phdr -> presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN ; tm . tm_year = yy - 1900 ; tm . tm_mon = mm - 1 ; tm . tm_mday = dd ; tm . tm_hour = hr ; tm . tm_min = min ; tm . tm_sec = sec ; tm . tm_isdst = - 1 ; phdr -> ts . secs = mktime ( & tm ) ; phdr -> ts . nsecs = csec * 10000000 ; phdr -> len = pkt_len ; if ( strncmp ( if_name , \"TEST:\" , 5 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_TEST ; } else if ( strncmp ( if_name , \"PPoATM:\" , 7 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_PPoATM ; } else if ( strncmp ( if_name , \"PPoFR:\" , 6 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_PPoFR ; } else if ( strncmp ( if_name , \"ATM:\" , 4 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_ATM ; } else if ( strncmp ( if_name , \"FR:\" , 3 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_FR ; } else if ( strncmp ( if_name , \"HDLC:\" , 5 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_HDLC ; } else if ( strncmp ( if_name , \"PPP:\" , 4 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_PPP ; } else if ( strncmp ( if_name , \"ETH:\" , 4 ) == 0 ) { pseudo_header -> cosine . encap = COSINE_ENCAP_ETH ; } else { pseudo_header -> cosine . encap = COSINE_ENCAP_UNKNOWN ; } if ( strncmp ( direction , \"l2-tx\" , 5 ) == 0 ) { pseudo_header -> cosine . direction = COSINE_DIR_TX ; } else if ( strncmp ( direction , \"l2-rx\" , 5 ) == 0 ) { pseudo_header -> cosine . direction = COSINE_DIR_RX ; } g_strlcpy ( pseudo_header -> cosine . if_name , if_name , COSINE_MAX_IF_NAME_LEN ) ; pseudo_header -> cosine . pro = pro ; pseudo_header -> cosine . off = off ; pseudo_header -> cosine . pri = pri ; pseudo_header -> cosine . rm = rm ; pseudo_header -> cosine . err = error ; ws_buffer_assure_space ( buf , pkt_len ) ; pd = ws_buffer_start_ptr ( buf ) ; hex_lines = pkt_len / 16 + ( ( pkt_len % 16 ) ? 1 : 0 ) ; for ( i = 0 ; i < hex_lines ; i ++ ) { if ( file_gets ( line , COSINE_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } if ( empty_line ( line ) ) { break ; } if ( ( n = parse_single_hex_dump_line ( line , pd , i * 16 ) ) == - 1 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"cosine:<S2SV_blank>hex<S2SV_blank>dump<S2SV_blank>line<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>16<S2SV_blank>numbers\" ) ; return FALSE ; } caplen += n ; } phdr -> caplen = caplen ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sec , csec , <S2SV_ModEnd> pkt_len ; int <S2SV_ModStart> ( line , \"%4d-%2d-%2d,%2d:%2d:%2d.%9d:<S2SV_blank>%5s<S2SV_blank>(%127[A-Za-z0-9/:]),<S2SV_blank>Length:%9d,<S2SV_blank>Pro:%9d,<S2SV_blank>Off:%9d,<S2SV_blank>Pri:%9d,<S2SV_blank>RM:%9d,<S2SV_blank>Err:%9d<S2SV_blank>[%8x,<S2SV_blank>%8x]\" <S2SV_ModEnd> , & yy <S2SV_ModStart> ( line , \"%5s<S2SV_blank>(%127[A-Za-z0-9/:]),<S2SV_blank>Length:%9d,<S2SV_blank>Pro:%9d,<S2SV_blank>Off:%9d,<S2SV_blank>Pri:%9d,<S2SV_blank>RM:%9d,<S2SV_blank>Err:%9d<S2SV_blank>[%8x,<S2SV_blank>%8x]\" <S2SV_ModEnd> , direction , <S2SV_ModStart> csec = 0 ; } if ( pkt_len < 0 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"cosine:<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>has<S2SV_blank>a<S2SV_blank>negative<S2SV_blank>packet<S2SV_blank>length\" ) ; return FALSE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5302\n\n```\nCWE-200 static void tv_details_row_activated ( GtkTreeView * tree_view , GtkTreePath * tree_path_UNUSED , GtkTreeViewColumn * column , gpointer user_data ) { gchar * item_name ; struct problem_item * item = get_current_problem_item_or_NULL ( tree_view , & item_name ) ; if ( ! item || ! ( item -> flags & CD_FLAG_TXT ) ) goto ret ; if ( ! strchr ( item -> content , '\\\\n' ) ) goto ret ; gint exitcode ; gchar * arg [ 3 ] ; arg [ 0 ] = ( char * ) \"xdg-open\" ; arg [ 1 ] = concat_path_file ( g_dump_dir_name , item_name ) ; arg [ 2 ] = NULL ; const gboolean spawn_ret = g_spawn_sync ( NULL , arg , NULL , G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL , NULL , NULL , NULL , NULL , & exitcode , NULL ) ; if ( spawn_ret == FALSE || exitcode != EXIT_SUCCESS ) { GtkWidget * dialog = gtk_dialog_new_with_buttons ( _ ( \"View/edit<S2SV_blank>a<S2SV_blank>text<S2SV_blank>file\" ) , GTK_WINDOW ( g_wnd_assistant ) , GTK_DIALOG_MODAL | GTK_DIALOG_DESTROY_WITH_PARENT , NULL , NULL ) ; GtkWidget * vbox = gtk_dialog_get_content_area ( GTK_DIALOG ( dialog ) ) ; GtkWidget * scrolled = gtk_scrolled_window_new ( NULL , NULL ) ; GtkWidget * textview = gtk_text_view_new ( ) ; gtk_dialog_add_button ( GTK_DIALOG ( dialog ) , _ ( \"_Save\" ) , GTK_RESPONSE_OK ) ; gtk_dialog_add_button ( GTK_DIALOG ( dialog ) , _ ( \"_Cancel\" ) , GTK_RESPONSE_CANCEL ) ; gtk_box_pack_start ( GTK_BOX ( vbox ) , scrolled , TRUE , TRUE , 0 ) ; gtk_widget_set_size_request ( scrolled , 640 , 480 ) ; gtk_widget_show ( scrolled ) ; # if ( ( GTK_MAJOR_VERSION == 3 && GTK_MINOR_VERSION < 7 ) || ( GTK_MAJOR_VERSION == 3 && GTK_MINOR_VERSION == 7 && GTK_MICRO_VERSION < 8 ) ) gtk_scrolled_window_add_with_viewport ( GTK_SCROLLED_WINDOW ( scrolled ) , textview ) ; # else gtk_container_add ( GTK_CONTAINER ( scrolled ) , textview ) ; # endif gtk_widget_show ( textview ) ; load_text_to_text_view ( GTK_TEXT_VIEW ( textview ) , item_name ) ; if ( gtk_dialog_run ( GTK_DIALOG ( dialog ) ) == GTK_RESPONSE_OK ) <S2SV_StartBug> save_text_from_text_view ( GTK_TEXT_VIEW ( textview ) , item_name ) ; <S2SV_EndBug> gtk_widget_destroy ( textview ) ; gtk_widget_destroy ( scrolled ) ; gtk_widget_destroy ( dialog ) ; } free ( arg [ 1 ] ) ; ret : g_free ( item_name ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == GTK_RESPONSE_OK ) { <S2SV_ModStart> item_name ) ; problem_data_reload_from_dump_dir ( ) ; update_gui_state_from_problem_data ( 0 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5273\n\n```\nCWE-59 int main ( int argc , char * * argv ) { setlocale ( LC_ALL , \"\" ) ; # if ENABLE_NLS bindtextdomain ( PACKAGE , LOCALEDIR ) ; textdomain ( PACKAGE ) ; # endif abrt_init ( argv ) ; const char * program_usage_string = _ ( \"&<S2SV_blank>[-y]<S2SV_blank>[-i<S2SV_blank>BUILD_IDS_FILE|-i<S2SV_blank>-]<S2SV_blank>[-e<S2SV_blank>PATH[:PATH]...]\\\\n\" \"\\\\t[-r<S2SV_blank>REPO]\\\\n\" \"\\\\n\" \"Installs<S2SV_blank>debuginfo<S2SV_blank>packages<S2SV_blank>for<S2SV_blank>all<S2SV_blank>build-ids<S2SV_blank>listed<S2SV_blank>in<S2SV_blank>BUILD_IDS_FILE<S2SV_blank>to\\\\n\" \"ABRT<S2SV_blank>system<S2SV_blank>cache.\" ) ; enum { OPT_v = 1 << 0 , OPT_y = 1 << 1 , OPT_i = 1 << 2 , OPT_e = 1 << 3 , OPT_r = 1 << 4 , OPT_s = 1 << 5 , } ; const char * build_ids = \"build_ids\" ; const char * exact = NULL ; const char * repo = NULL ; const char * size_mb = NULL ; struct options program_options [ ] = { OPT__VERBOSE ( & g_verbose ) , OPT_BOOL ( 'y' , \"yes\" , NULL , _ ( \"Noninteractive,<S2SV_blank>assume<S2SV_blank>\\'Yes\\'<S2SV_blank>to<S2SV_blank>all<S2SV_blank>questions\" ) ) , OPT_STRING ( 'i' , \"ids\" , & build_ids , \"BUILD_IDS_FILE\" , _ ( \"-<S2SV_blank>means<S2SV_blank>STDIN,<S2SV_blank>default:<S2SV_blank>build_ids\" ) ) , OPT_STRING ( 'e' , \"exact\" , & exact , \"EXACT\" , _ ( \"Download<S2SV_blank>only<S2SV_blank>specified<S2SV_blank>files\" ) ) , OPT_STRING ( 'r' , \"repo\" , & repo , \"REPO\" , _ ( \"Pattern<S2SV_blank>to<S2SV_blank>use<S2SV_blank>when<S2SV_blank>searching<S2SV_blank>for<S2SV_blank>repos,<S2SV_blank>default:<S2SV_blank>*debug*\" ) ) , OPT_STRING ( 's' , \"size_mb\" , & size_mb , \"SIZE_MB\" , _ ( \"Ignored<S2SV_blank>option\" ) ) , OPT_END ( ) } ; const unsigned opts = parse_opts ( argc , argv , program_options , program_usage_string ) ; const gid_t egid = getegid ( ) ; const gid_t rgid = getgid ( ) ; const uid_t euid = geteuid ( ) ; const gid_t ruid = getuid ( ) ; char * build_ids_self_fd = NULL ; if ( strcmp ( \"-\" , build_ids ) != 0 ) { if ( setregid ( egid , rgid ) < 0 ) perror_msg_and_die ( \"setregid(egid,<S2SV_blank>rgid)\" ) ; if ( setreuid ( euid , ruid ) < 0 ) perror_msg_and_die ( \"setreuid(euid,<S2SV_blank>ruid)\" ) ; const int build_ids_fd = open ( build_ids , O_RDONLY ) ; if ( setregid ( rgid , egid ) < 0 ) perror_msg_and_die ( \"setregid(rgid,<S2SV_blank>egid)\" ) ; if ( setreuid ( ruid , euid ) < 0 ) perror_msg_and_die ( \"setreuid(ruid,<S2SV_blank>euid)\" ) ; if ( build_ids_fd < 0 ) perror_msg_and_die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>file<S2SV_blank>\\'%s\\'\" , build_ids ) ; build_ids_self_fd = xasprintf ( \"/proc/self/fd/%d\" , build_ids_fd ) ; } <S2SV_StartBug> const char * args [ 11 ] ; <S2SV_EndBug> { const char * verbs [ ] = { \"\" , \"-v\" , \"-vv\" , \"-vvv\" } ; unsigned i = 0 ; args [ i ++ ] = EXECUTABLE ; args [ i ++ ] = \"--ids\" ; args [ i ++ ] = ( build_ids_self_fd != NULL ) ? build_ids_self_fd : \"-\" ; if ( g_verbose > 0 ) args [ i ++ ] = verbs [ g_verbose <= 3 ? g_verbose : 3 ] ; if ( ( opts & OPT_y ) ) args [ i ++ ] = \"-y\" ; if ( ( opts & OPT_e ) ) { args [ i ++ ] = \"--exact\" ; args [ i ++ ] = exact ; } if ( ( opts & OPT_r ) ) { args [ i ++ ] = \"--repo\" ; args [ i ++ ] = repo ; } <S2SV_StartBug> args [ i ++ ] = \"--\" ; <S2SV_EndBug> args [ i ] = NULL ; } if ( egid != rgid ) IGNORE_RESULT ( setregid ( egid , egid ) ) ; if ( euid != ruid ) { IGNORE_RESULT ( setreuid ( euid , euid ) ) ; # if 1 static const char * whitelist [ ] = { \"REPORT_CLIENT_SLAVE\" , \"LANG\" , } ; const size_t wlsize = sizeof ( whitelist ) / sizeof ( char * ) ; char * setlist [ sizeof ( whitelist ) / sizeof ( char * ) ] = { 0 } ; char * p = NULL ; for ( size_t i = 0 ; i < wlsize ; i ++ ) if ( ( p = getenv ( whitelist [ i ] ) ) != NULL ) setlist [ i ] = xstrdup ( p ) ; clearenv ( ) ; for ( size_t i = 0 ; i < wlsize ; i ++ ) if ( setlist [ i ] != NULL ) { xsetenv ( whitelist [ i ] , setlist [ i ] ) ; free ( setlist [ i ] ) ; } # else static const char forbid [ ] = \"LD_LIBRARY_PATH\" \"\\\\0\" \"LD_PRELOAD\" \"\\\\0\" \"LD_TRACE_LOADED_OBJECTS\" \"\\\\0\" \"LD_BIND_NOW\" \"\\\\0\" \"LD_AOUT_LIBRARY_PATH\" \"\\\\0\" \"LD_AOUT_PRELOAD\" \"\\\\0\" \"LD_NOWARN\" \"\\\\0\" \"LD_KEEPDIR\" \"\\\\0\" ; const char * p = forbid ; do { unsetenv ( p ) ; p += strlen ( p ) + 1 ; } while ( * p ) ; # endif char path_env [ ] = \"PATH=/usr/sbin:/sbin:/usr/bin:/bin:\" BIN_DIR \":\" SBIN_DIR ; if ( euid != 0 ) strcpy ( path_env , \"PATH=/usr/bin:/bin:\" BIN_DIR ) ; putenv ( path_env ) ; umask ( 0022 ) ; } <S2SV_StartBug> execvp ( EXECUTABLE , ( char * * ) args ) ; <S2SV_EndBug> error_msg_and_die ( \"Can\\'t<S2SV_blank>execute<S2SV_blank>%s\" , EXECUTABLE ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } char tmp_directory [ ] = LARGE_DATA_TMP_DIR \"/abrt-tmp-debuginfo.XXXXXX\" ; if ( mkdtemp ( tmp_directory ) == NULL ) perror_msg_and_die ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>working<S2SV_blank>directory\" ) ; log_info ( \"Created<S2SV_blank>working<S2SV_blank>directory:<S2SV_blank>%s\" , tmp_directory ) ; const char * args [ 13 <S2SV_ModEnd> ] ; { <S2SV_ModStart> ++ ] = \"--tmpdir\" ; args [ i ++ ] = tmp_directory ; args [ i ++ ] = <S2SV_ModStart> ) ; } pid_t pid = fork ( ) ; if ( pid < 0 ) perror_msg_and_die ( \"fork\" ) ; if ( pid == 0 ) { <S2SV_ModStart> ) ; } int status ; if ( safe_waitpid ( pid , & status , 0 ) < 0 ) perror_msg_and_die ( \"waitpid\" ) ; if ( rmdir ( tmp_directory ) >= 0 ) log_info ( \"Removed<S2SV_blank>working<S2SV_blank>directory:<S2SV_blank>%s\" , tmp_directory ) ; else if ( errno != ENOENT ) perror_msg ( \"Failed<S2SV_blank>to<S2SV_blank>remove<S2SV_blank>working<S2SV_blank>directory\" ) ; if ( WIFEXITED ( status ) ) return WEXITSTATUS ( status ) ; if ( WIFSIGNALED ( status ) ) error_msg_and_die ( \"Child<S2SV_blank>terminated<S2SV_blank>with<S2SV_blank>signal<S2SV_blank>%d\" , WTERMSIG ( status ) ) ; error_msg_and_die ( \"Child<S2SV_blank>exit<S2SV_blank>failed\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0207\n\n```\nCWE-119 protected int file_trycdf ( struct magic_set * ms , int fd , const unsigned char * buf , size_t nbytes ) { cdf_info_t info ; cdf_header_t h ; cdf_sat_t sat , ssat ; cdf_stream_t sst , scn ; cdf_dir_t dir ; int i ; const char * expn = \"\" ; const char * corrupt = \"corrupt:<S2SV_blank>\" ; info . i_fd = fd ; info . i_buf = buf ; info . i_len = nbytes ; if ( ms -> flags & MAGIC_APPLE ) return 0 ; if ( cdf_read_header ( & info , & h ) == - 1 ) return 0 ; # ifdef CDF_DEBUG cdf_dump_header ( & h ) ; # endif if ( ( i = cdf_read_sat ( & info , & h , & sat ) ) == - 1 ) { expn = \"Can\\'t<S2SV_blank>read<S2SV_blank>SAT\" ; goto out0 ; } # ifdef CDF_DEBUG cdf_dump_sat ( \"SAT\" , & sat , CDF_SEC_SIZE ( & h ) ) ; # endif if ( ( i = cdf_read_ssat ( & info , & h , & sat , & ssat ) ) == - 1 ) { expn = \"Can\\'t<S2SV_blank>read<S2SV_blank>SSAT\" ; goto out1 ; } # ifdef CDF_DEBUG cdf_dump_sat ( \"SSAT\" , & ssat , CDF_SHORT_SEC_SIZE ( & h ) ) ; # endif if ( ( i = cdf_read_dir ( & info , & h , & sat , & dir ) ) == - 1 ) { expn = \"Can\\'t<S2SV_blank>read<S2SV_blank>directory\" ; goto out2 ; } const cdf_directory_t * root_storage ; if ( ( i = cdf_read_short_stream ( & info , & h , & sat , & dir , & sst , & root_storage ) ) == - 1 ) { expn = \"Cannot<S2SV_blank>read<S2SV_blank>short<S2SV_blank>stream\" ; goto out3 ; } # ifdef CDF_DEBUG cdf_dump_dir ( & info , & h , & sat , & ssat , & sst , & dir ) ; # endif # ifdef notdef if ( root_storage ) { if ( NOTMIME ( ms ) ) { char clsbuf [ 128 ] ; if ( file_printf ( ms , \"CLSID<S2SV_blank>%s,<S2SV_blank>\" , format_clsid ( clsbuf , sizeof ( clsbuf ) , root_storage -> d_storage_uuid ) ) == - 1 ) return - 1 ; } } # endif if ( ( i = cdf_read_summary_info ( & info , & h , & sat , & ssat , & sst , & dir , & scn ) ) == - 1 ) { if ( errno == ESRCH ) { corrupt = expn ; expn = \"No<S2SV_blank>summary<S2SV_blank>info\" ; } else { expn = \"Cannot<S2SV_blank>read<S2SV_blank>summary<S2SV_blank>info\" ; } goto out4 ; } # ifdef CDF_DEBUG cdf_dump_summary_info ( & h , & scn ) ; # endif if ( ( i = cdf_file_summary_info ( ms , & h , & scn , <S2SV_StartBug> root_storage -> d_storage_uuid ) ) < 0 ) <S2SV_EndBug> expn = \"Can\\'t<S2SV_blank>expand<S2SV_blank>summary_info\" ; if ( i == 0 ) { const char * str = NULL ; cdf_directory_t * d ; char name [ __arraycount ( d -> d_name ) ] ; size_t j , k ; for ( j = 0 ; str == NULL && j < dir . dir_len ; j ++ ) { d = & dir . dir_tab [ j ] ; for ( k = 0 ; k < sizeof ( name ) ; k ++ ) name [ k ] = ( char ) cdf_tole2 ( d -> d_name [ k ] ) ; str = cdf_app_to_mime ( name , NOTMIME ( ms ) ? name2desc : name2mime ) ; } if ( NOTMIME ( ms ) ) { if ( str != NULL ) { if ( file_printf ( ms , \"%s\" , str ) == - 1 ) return - 1 ; i = 1 ; } } else { if ( str == NULL ) str = \"vnd.ms-office\" ; if ( file_printf ( ms , \"application/%s\" , str ) == - 1 ) return - 1 ; i = 1 ; } } free ( scn . sst_tab ) ; out4 : free ( sst . sst_tab ) ; out3 : free ( dir . dir_tab ) ; out2 : free ( ssat . sat_tab ) ; out1 : free ( sat . sat_tab ) ; out0 : if ( i == - 1 ) { if ( NOTMIME ( ms ) ) { if ( file_printf ( ms , \"Composite<S2SV_blank>Document<S2SV_blank>File<S2SV_blank>V2<S2SV_blank>Document\" ) == - 1 ) return - 1 ; if ( * expn ) if ( file_printf ( ms , \",<S2SV_blank>%s%s\" , corrupt , expn ) == - 1 ) return - 1 ; } else { if ( file_printf ( ms , \"application/CDFV2-corrupt\" ) == - 1 ) return - 1 ; } i = 1 ; } return i ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> scn , root_storage <S2SV_ModEnd> ) ) <\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3698\n\n```\nCWE-284 static int ndp_sock_recv ( struct ndp * ndp ) { struct ndp_msg * msg ; enum ndp_msg_type msg_type ; size_t len ; int err ; msg = ndp_msg_alloc ( ) ; if ( ! msg ) return - ENOMEM ; len = ndp_msg_payload_maxlen ( msg ) ; err = myrecvfrom6 ( ndp -> sock , msg -> buf , & len , 0 , <S2SV_StartBug> & msg -> addrto , & msg -> ifindex ) ; <S2SV_EndBug> if ( err ) { err ( ndp , \"Failed<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>message\" ) ; goto free_msg ; } <S2SV_StartBug> dbg ( ndp , \"rcvd<S2SV_blank>from:<S2SV_blank>%s,<S2SV_blank>ifindex:<S2SV_blank>%u\" , <S2SV_EndBug> <S2SV_StartBug> str_in6_addr ( & msg -> addrto ) , msg -> ifindex ) ; <S2SV_EndBug> if ( len < sizeof ( * msg -> icmp6_hdr ) ) { warn ( ndp , \"rcvd<S2SV_blank>icmp6<S2SV_blank>packet<S2SV_blank>too<S2SV_blank>short<S2SV_blank>(%luB)\" , len ) ; err = 0 ; goto free_msg ; } err = ndp_msg_type_by_raw_type ( & msg_type , msg -> icmp6_hdr -> icmp6_type ) ; if ( err ) { err = 0 ; goto free_msg ; } ndp_msg_init ( msg , msg_type ) ; ndp_msg_payload_len_set ( msg , len ) ; if ( ! ndp_msg_check_valid ( msg ) ) { warn ( ndp , \"rcvd<S2SV_blank>invalid<S2SV_blank>ND<S2SV_blank>message\" ) ; err = 0 ; goto free_msg ; } dbg ( ndp , \"rcvd<S2SV_blank>%s,<S2SV_blank>len:<S2SV_blank>%zuB\" , ndp_msg_type_info ( msg_type ) -> strabbr , len ) ; if ( ! ndp_msg_check_opts ( msg ) ) { err = 0 ; goto free_msg ; } err = ndp_call_handlers ( ndp , msg ) ; ; free_msg : ndp_msg_destroy ( msg ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> msg -> ifindex , & msg -> hoplimit <S2SV_ModStart> ( ndp , \"rcvd<S2SV_blank>from:<S2SV_blank>%s,<S2SV_blank>ifindex:<S2SV_blank>%u,<S2SV_blank>hoplimit:<S2SV_blank>%d\" <S2SV_ModEnd> , str_in6_addr ( <S2SV_ModStart> msg -> ifindex , msg -> hoplimit ) ; if ( msg -> hoplimit != 255 ) { warn ( ndp , \"ignoring<S2SV_blank>packet<S2SV_blank>with<S2SV_blank>bad<S2SV_blank>hop<S2SV_blank>limit<S2SV_blank>(%d)\" , msg -> hoplimit ) ; err = 0 ; goto free_msg ; } <S2SV_ModEnd> if ( len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2150\n\n```\nCWE-264 static int command_read ( struct pci_dev * dev , int offset , u16 * value , void * data ) { <S2SV_StartBug> int i ; <S2SV_EndBug> int ret ; <S2SV_StartBug> ret = xen_pcibk_read_config_word ( dev , offset , value , data ) ; <S2SV_EndBug> if ( ! pci_is_enabled ( dev ) ) return ret ; for ( i = 0 ; i < PCI_ROM_RESOURCE ; i ++ ) { if ( dev -> resource [ i ] . flags & IORESOURCE_IO ) <S2SV_StartBug> * value |= PCI_COMMAND_IO ; <S2SV_EndBug> if ( dev -> resource [ i ] . flags & IORESOURCE_MEM ) * value |= PCI_COMMAND_MEMORY ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { int ret = pci_read_config_word <S2SV_ModEnd> ( dev , <S2SV_ModStart> offset , value ) ; const struct pci_cmd_info * cmd = data ; * value &= PCI_COMMAND_GUEST ; <S2SV_ModEnd> * value |= <S2SV_ModStart> * value |= cmd -> val & ~ PCI_COMMAND_GUEST ; <S2SV_ModEnd> return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static MB_PREDICTION_MODE read_intra_mode ( vp9_reader * r , const vp9_prob * p ) { <S2SV_EndBug> <S2SV_StartBug> return ( MB_PREDICTION_MODE ) vp9_read_tree ( r , vp9_intra_mode_tree , p ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static PREDICTION_MODE read_intra_mode ( vpx_reader <S2SV_ModEnd> * r , <S2SV_ModStart> r , const vpx_prob <S2SV_ModEnd> * p ) <S2SV_ModStart> { return ( PREDICTION_MODE ) vpx_read_tree <S2SV_ModEnd> ( r ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20855\n\n```\nCWE-119 static int create_qp_common ( struct mlx5_ib_dev * dev , struct ib_pd * pd , struct ib_qp_init_attr * init_attr , struct ib_udata * udata , struct mlx5_ib_qp * qp ) { struct mlx5_ib_resources * devr = & dev -> devr ; int inlen = MLX5_ST_SZ_BYTES ( create_qp_in ) ; struct mlx5_core_dev * mdev = dev -> mdev ; <S2SV_StartBug> struct mlx5_ib_create_qp_resp resp ; <S2SV_EndBug> struct mlx5_ib_cq * send_cq ; struct mlx5_ib_cq * recv_cq ; unsigned long flags ; u32 uidx = MLX5_IB_DEFAULT_UIDX ; struct mlx5_ib_create_qp ucmd ; struct mlx5_ib_qp_base * base ; int mlx5_st ; void * qpc ; u32 * in ; int err ; mutex_init ( & qp -> mutex ) ; spin_lock_init ( & qp -> sq . lock ) ; spin_lock_init ( & qp -> rq . lock ) ; mlx5_st = to_mlx5_st ( init_attr -> qp_type ) ; if ( mlx5_st < 0 ) return - EINVAL ; if ( init_attr -> rwq_ind_tbl ) { if ( ! udata ) return - ENOSYS ; err = create_rss_raw_qp_tir ( dev , qp , pd , init_attr , udata ) ; return err ; } if ( init_attr -> create_flags & IB_QP_CREATE_BLOCK_MULTICAST_LOOPBACK ) { if ( ! MLX5_CAP_GEN ( mdev , block_lb_mc ) ) { mlx5_ib_dbg ( dev , \"block<S2SV_blank>multicast<S2SV_blank>loopback<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EINVAL ; } else { qp -> flags |= MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK ; } } if ( init_attr -> create_flags & ( IB_QP_CREATE_CROSS_CHANNEL | IB_QP_CREATE_MANAGED_SEND | IB_QP_CREATE_MANAGED_RECV ) ) { if ( ! MLX5_CAP_GEN ( mdev , cd ) ) { mlx5_ib_dbg ( dev , \"cross-channel<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EINVAL ; } if ( init_attr -> create_flags & IB_QP_CREATE_CROSS_CHANNEL ) qp -> flags |= MLX5_IB_QP_CROSS_CHANNEL ; if ( init_attr -> create_flags & IB_QP_CREATE_MANAGED_SEND ) qp -> flags |= MLX5_IB_QP_MANAGED_SEND ; if ( init_attr -> create_flags & IB_QP_CREATE_MANAGED_RECV ) qp -> flags |= MLX5_IB_QP_MANAGED_RECV ; } if ( init_attr -> qp_type == IB_QPT_UD && ( init_attr -> create_flags & IB_QP_CREATE_IPOIB_UD_LSO ) ) if ( ! MLX5_CAP_GEN ( mdev , ipoib_basic_offloads ) ) { mlx5_ib_dbg ( dev , \"ipoib<S2SV_blank>UD<S2SV_blank>lso<S2SV_blank>qp<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EOPNOTSUPP ; } if ( init_attr -> create_flags & IB_QP_CREATE_SCATTER_FCS ) { if ( init_attr -> qp_type != IB_QPT_RAW_PACKET ) { mlx5_ib_dbg ( dev , \"Scatter<S2SV_blank>FCS<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>only<S2SV_blank>for<S2SV_blank>Raw<S2SV_blank>Packet<S2SV_blank>QPs\" ) ; return - EOPNOTSUPP ; } if ( ! MLX5_CAP_GEN ( dev -> mdev , eth_net_offloads ) || ! MLX5_CAP_ETH ( dev -> mdev , scatter_fcs ) ) { mlx5_ib_dbg ( dev , \"Scatter<S2SV_blank>FCS<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EOPNOTSUPP ; } qp -> flags |= MLX5_IB_QP_CAP_SCATTER_FCS ; } if ( init_attr -> sq_sig_type == IB_SIGNAL_ALL_WR ) qp -> sq_signal_bits = MLX5_WQE_CTRL_CQ_UPDATE ; if ( init_attr -> create_flags & IB_QP_CREATE_CVLAN_STRIPPING ) { if ( ! ( MLX5_CAP_GEN ( dev -> mdev , eth_net_offloads ) && MLX5_CAP_ETH ( dev -> mdev , vlan_cap ) ) || ( init_attr -> qp_type != IB_QPT_RAW_PACKET ) ) return - EOPNOTSUPP ; qp -> flags |= MLX5_IB_QP_CVLAN_STRIPPING ; } if ( pd && pd -> uobject ) { if ( ib_copy_from_udata ( & ucmd , udata , sizeof ( ucmd ) ) ) { mlx5_ib_dbg ( dev , \"copy<S2SV_blank>failed\\\\n\" ) ; return - EFAULT ; } err = get_qp_user_index ( to_mucontext ( pd -> uobject -> context ) , & ucmd , udata -> inlen , & uidx ) ; if ( err ) return err ; qp -> wq_sig = ! ! ( ucmd . flags & MLX5_QP_FLAG_SIGNATURE ) ; qp -> scat_cqe = ! ! ( ucmd . flags & MLX5_QP_FLAG_SCATTER_CQE ) ; if ( ucmd . flags & MLX5_QP_FLAG_TUNNEL_OFFLOADS ) { if ( init_attr -> qp_type != IB_QPT_RAW_PACKET || ! tunnel_offload_supported ( mdev ) ) { mlx5_ib_dbg ( dev , \"Tunnel<S2SV_blank>offload<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EOPNOTSUPP ; } qp -> tunnel_offload_en = true ; } if ( init_attr -> create_flags & IB_QP_CREATE_SOURCE_QPN ) { if ( init_attr -> qp_type != IB_QPT_UD || ( MLX5_CAP_GEN ( dev -> mdev , port_type ) != MLX5_CAP_PORT_TYPE_IB ) || ! mlx5_get_flow_namespace ( dev -> mdev , MLX5_FLOW_NAMESPACE_BYPASS ) ) { mlx5_ib_dbg ( dev , \"Source<S2SV_blank>QP<S2SV_blank>option<S2SV_blank>isn\\'t<S2SV_blank>supported\\\\n\" ) ; return - EOPNOTSUPP ; } qp -> flags |= MLX5_IB_QP_UNDERLAY ; qp -> underlay_qpn = init_attr -> source_qpn ; } } else { qp -> wq_sig = ! ! wq_signature ; } base = ( init_attr -> qp_type == IB_QPT_RAW_PACKET || qp -> flags & MLX5_IB_QP_UNDERLAY ) ? & qp -> raw_packet_qp . rq . base : & qp -> trans_qp . base ; qp -> has_rq = qp_has_rq ( init_attr ) ; err = set_rq_size ( dev , & init_attr -> cap , qp -> has_rq , qp , ( pd && pd -> uobject ) ? & ucmd : NULL ) ; if ( err ) { mlx5_ib_dbg ( dev , \"err<S2SV_blank>%d\\\\n\" , err ) ; return err ; } if ( pd ) { if ( pd -> uobject ) { __u32 max_wqes = 1 << MLX5_CAP_GEN ( mdev , log_max_qp_sz ) ; mlx5_ib_dbg ( dev , \"requested<S2SV_blank>sq_wqe_count<S2SV_blank>(%d)\\\\n\" , ucmd . sq_wqe_count ) ; if ( ucmd . rq_wqe_shift != qp -> rq . wqe_shift || ucmd . rq_wqe_count != qp -> rq . wqe_cnt ) { mlx5_ib_dbg ( dev , \"invalid<S2SV_blank>rq<S2SV_blank>params\\\\n\" ) ; return - EINVAL ; } if ( ucmd . sq_wqe_count > max_wqes ) { mlx5_ib_dbg ( dev , \"requested<S2SV_blank>sq_wqe_count<S2SV_blank>(%d)<S2SV_blank>><S2SV_blank>max<S2SV_blank>allowed<S2SV_blank>(%d)\\\\n\" , ucmd . sq_wqe_count , max_wqes ) ; return - EINVAL ; } if ( init_attr -> create_flags & mlx5_ib_create_qp_sqpn_qp1 ( ) ) { mlx5_ib_dbg ( dev , \"user-space<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>UD<S2SV_blank>QPs<S2SV_blank>spoofing<S2SV_blank>as<S2SV_blank>QP1\\\\n\" ) ; return - EINVAL ; } err = create_user_qp ( dev , pd , qp , udata , init_attr , & in , & resp , & inlen , base ) ; if ( err ) mlx5_ib_dbg ( dev , \"err<S2SV_blank>%d\\\\n\" , err ) ; } else { err = create_kernel_qp ( dev , init_attr , qp , & in , & inlen , base ) ; if ( err ) mlx5_ib_dbg ( dev , \"err<S2SV_blank>%d\\\\n\" , err ) ; } if ( err ) return err ; } else { in = kvzalloc ( inlen , GFP_KERNEL ) ; if ( ! in ) return - ENOMEM ; qp -> create_type = MLX5_QP_EMPTY ; } if ( is_sqp ( init_attr -> qp_type ) ) qp -> port = init_attr -> port_num ; qpc = MLX5_ADDR_OF ( create_qp_in , in , qpc ) ; MLX5_SET ( qpc , qpc , st , mlx5_st ) ; MLX5_SET ( qpc , qpc , pm_state , MLX5_QP_PM_MIGRATED ) ; if ( init_attr -> qp_type != MLX5_IB_QPT_REG_UMR ) MLX5_SET ( qpc , qpc , pd , to_mpd ( pd ? pd : devr -> p0 ) -> pdn ) ; else MLX5_SET ( qpc , qpc , latency_sensitive , 1 ) ; if ( qp -> wq_sig ) MLX5_SET ( qpc , qpc , wq_signature , 1 ) ; if ( qp -> flags & MLX5_IB_QP_BLOCK_MULTICAST_LOOPBACK ) MLX5_SET ( qpc , qpc , block_lb_mc , 1 ) ; if ( qp -> flags & MLX5_IB_QP_CROSS_CHANNEL ) MLX5_SET ( qpc , qpc , cd_master , 1 ) ; if ( qp -> flags & MLX5_IB_QP_MANAGED_SEND ) MLX5_SET ( qpc , qpc , cd_slave_send , 1 ) ; if ( qp -> flags & MLX5_IB_QP_MANAGED_RECV ) MLX5_SET ( qpc , qpc , cd_slave_receive , 1 ) ; if ( qp -> scat_cqe && is_connected ( init_attr -> qp_type ) ) { int rcqe_sz ; int scqe_sz ; rcqe_sz = mlx5_ib_get_cqe_size ( dev , init_attr -> recv_cq ) ; scqe_sz = mlx5_ib_get_cqe_size ( dev , init_attr -> send_cq ) ; if ( rcqe_sz == 128 ) MLX5_SET ( qpc , qpc , cs_res , MLX5_RES_SCAT_DATA64_CQE ) ; else MLX5_SET ( qpc , qpc , cs_res , MLX5_RES_SCAT_DATA32_CQE ) ; if ( init_attr -> sq_sig_type == IB_SIGNAL_ALL_WR ) { if ( scqe_sz == 128 ) MLX5_SET ( qpc , qpc , cs_req , MLX5_REQ_SCAT_DATA64_CQE ) ; else MLX5_SET ( qpc , qpc , cs_req , MLX5_REQ_SCAT_DATA32_CQE ) ; } } if ( qp -> rq . wqe_cnt ) { MLX5_SET ( qpc , qpc , log_rq_stride , qp -> rq . wqe_shift - 4 ) ; MLX5_SET ( qpc , qpc , log_rq_size , ilog2 ( qp -> rq . wqe_cnt ) ) ; } MLX5_SET ( qpc , qpc , rq_type , get_rx_type ( qp , init_attr ) ) ; if ( qp -> sq . wqe_cnt ) { MLX5_SET ( qpc , qpc , log_sq_size , ilog2 ( qp -> sq . wqe_cnt ) ) ; } else { MLX5_SET ( qpc , qpc , no_sq , 1 ) ; if ( init_attr -> srq && init_attr -> srq -> srq_type == IB_SRQT_TM ) MLX5_SET ( qpc , qpc , offload_type , MLX5_QPC_OFFLOAD_TYPE_RNDV ) ; } switch ( init_attr -> qp_type ) { case IB_QPT_XRC_TGT : MLX5_SET ( qpc , qpc , cqn_rcv , to_mcq ( devr -> c0 ) -> mcq . cqn ) ; MLX5_SET ( qpc , qpc , cqn_snd , to_mcq ( devr -> c0 ) -> mcq . cqn ) ; MLX5_SET ( qpc , qpc , srqn_rmpn_xrqn , to_msrq ( devr -> s0 ) -> msrq . srqn ) ; MLX5_SET ( qpc , qpc , xrcd , to_mxrcd ( init_attr -> xrcd ) -> xrcdn ) ; break ; case IB_QPT_XRC_INI : MLX5_SET ( qpc , qpc , cqn_rcv , to_mcq ( devr -> c0 ) -> mcq . cqn ) ; MLX5_SET ( qpc , qpc , xrcd , to_mxrcd ( devr -> x1 ) -> xrcdn ) ; MLX5_SET ( qpc , qpc , srqn_rmpn_xrqn , to_msrq ( devr -> s0 ) -> msrq . srqn ) ; break ; default : if ( init_attr -> srq ) { MLX5_SET ( qpc , qpc , xrcd , to_mxrcd ( devr -> x0 ) -> xrcdn ) ; MLX5_SET ( qpc , qpc , srqn_rmpn_xrqn , to_msrq ( init_attr -> srq ) -> msrq . srqn ) ; } else { MLX5_SET ( qpc , qpc , xrcd , to_mxrcd ( devr -> x1 ) -> xrcdn ) ; MLX5_SET ( qpc , qpc , srqn_rmpn_xrqn , to_msrq ( devr -> s1 ) -> msrq . srqn ) ; } } if ( init_attr -> send_cq ) MLX5_SET ( qpc , qpc , cqn_snd , to_mcq ( init_attr -> send_cq ) -> mcq . cqn ) ; if ( init_attr -> recv_cq ) MLX5_SET ( qpc , qpc , cqn_rcv , to_mcq ( init_attr -> recv_cq ) -> mcq . cqn ) ; MLX5_SET64 ( qpc , qpc , dbr_addr , qp -> db . dma ) ; if ( MLX5_CAP_GEN ( mdev , cqe_version ) == MLX5_CQE_VERSION_V1 ) MLX5_SET ( qpc , qpc , user_index , uidx ) ; if ( init_attr -> qp_type == IB_QPT_UD && ( init_attr -> create_flags & IB_QP_CREATE_IPOIB_UD_LSO ) ) { MLX5_SET ( qpc , qpc , ulp_stateless_offload_mode , 1 ) ; qp -> flags |= MLX5_IB_QP_LSO ; } if ( init_attr -> create_flags & IB_QP_CREATE_PCI_WRITE_END_PADDING ) { if ( ! MLX5_CAP_GEN ( dev -> mdev , end_pad ) ) { mlx5_ib_dbg ( dev , \"scatter<S2SV_blank>end<S2SV_blank>padding<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; err = - EOPNOTSUPP ; goto err ; } else if ( init_attr -> qp_type != IB_QPT_RAW_PACKET ) { MLX5_SET ( qpc , qpc , end_padding_mode , MLX5_WQ_END_PAD_MODE_ALIGN ) ; } else { qp -> flags |= MLX5_IB_QP_PCI_WRITE_END_PADDING ; } } if ( inlen < 0 ) { err = - EINVAL ; goto err ; } if ( init_attr -> qp_type == IB_QPT_RAW_PACKET || qp -> flags & MLX5_IB_QP_UNDERLAY ) { qp -> raw_packet_qp . sq . ubuffer . buf_addr = ucmd . sq_buf_addr ; raw_packet_qp_copy_info ( qp , & qp -> raw_packet_qp ) ; err = create_raw_packet_qp ( dev , qp , in , inlen , pd ) ; } else { err = mlx5_core_create_qp ( dev -> mdev , & base -> mqp , in , inlen ) ; } if ( err ) { mlx5_ib_dbg ( dev , \"create<S2SV_blank>qp<S2SV_blank>failed\\\\n\" ) ; goto err_create ; } kvfree ( in ) ; base -> container_mibqp = qp ; base -> mqp . event = mlx5_ib_qp_event ; get_cqs ( init_attr -> qp_type , init_attr -> send_cq , init_attr -> recv_cq , & send_cq , & recv_cq ) ; spin_lock_irqsave ( & dev -> reset_flow_resource_lock , flags ) ; mlx5_ib_lock_cqs ( send_cq , recv_cq ) ; list_add_tail ( & qp -> qps_list , & dev -> qp_list ) ; if ( send_cq ) list_add_tail ( & qp -> cq_send_list , & send_cq -> list_send_qp ) ; if ( recv_cq ) list_add_tail ( & qp -> cq_recv_list , & recv_cq -> list_recv_qp ) ; mlx5_ib_unlock_cqs ( send_cq , recv_cq ) ; spin_unlock_irqrestore ( & dev -> reset_flow_resource_lock , flags ) ; return 0 ; err_create : if ( qp -> create_type == MLX5_QP_USER ) destroy_qp_user ( dev , pd , qp , base ) ; else if ( qp -> create_type == MLX5_QP_KERNEL ) destroy_qp_kernel ( dev , qp ) ; err : kvfree ( in ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct mlx5_ib_create_qp_resp resp = { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_init_mbmode_probs ( VP8_COMMON * x ) { <S2SV_StartBug> vpx_memcpy ( x -> fc . ymode_prob , vp8_ymode_prob , sizeof ( vp8_ymode_prob ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( x -> fc . uv_mode_prob , vp8_uv_mode_prob , sizeof ( vp8_uv_mode_prob ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( x -> fc . sub_mv_ref_prob , sub_mv_ref_prob , sizeof ( sub_mv_ref_prob ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x ) { memcpy <S2SV_ModEnd> ( x -> <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( x -> <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( x ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0716\n\n```\nCWE-399 static int br_multicast_add_group ( struct net_bridge * br , struct net_bridge_port * port , struct br_ip * group ) { struct net_bridge_mdb_entry * mp ; struct net_bridge_port_group * p ; struct net_bridge_port_group __rcu * * pp ; unsigned long now = jiffies ; int err ; spin_lock ( & br -> multicast_lock ) ; if ( ! netif_running ( br -> dev ) || ( port && port -> state == BR_STATE_DISABLED ) ) goto out ; mp = br_multicast_new_group ( br , port , group ) ; err = PTR_ERR ( mp ) ; if ( IS_ERR ( mp ) ) goto err ; if ( ! port ) { <S2SV_StartBug> hlist_add_head ( & mp -> mglist , & br -> mglist ) ; <S2SV_EndBug> mod_timer ( & mp -> timer , now + br -> multicast_membership_interval ) ; goto out ; } for ( pp = & mp -> ports ; ( p = mlock_dereference ( * pp , br ) ) != NULL ; pp = & p -> next ) { if ( p -> port == port ) goto found ; if ( ( unsigned long ) p -> port < ( unsigned long ) port ) break ; } p = kzalloc ( sizeof ( * p ) , GFP_ATOMIC ) ; err = - ENOMEM ; if ( unlikely ( ! p ) ) goto err ; p -> addr = * group ; p -> port = port ; p -> next = * pp ; hlist_add_head ( & p -> mglist , & port -> mglist ) ; setup_timer ( & p -> timer , br_multicast_port_group_expired , ( unsigned long ) p ) ; setup_timer ( & p -> query_timer , br_multicast_port_group_query_expired , ( unsigned long ) p ) ; rcu_assign_pointer ( * pp , p ) ; found : mod_timer ( & p -> timer , now + br -> multicast_membership_interval ) ; out : err = 0 ; err : spin_unlock ( & br -> multicast_lock ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> port ) { if ( hlist_unhashed ( & mp -> mglist ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-129(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-17542\n\n```\nCWE-129 static av_cold int vqa_decode_init ( AVCodecContext * avctx ) { VqaContext * s = avctx -> priv_data ; int i , j , codebook_index , ret ; s -> avctx = avctx ; avctx -> pix_fmt = AV_PIX_FMT_PAL8 ; if ( s -> avctx -> extradata_size != VQA_HEADER_SIZE ) { av_log ( s -> avctx , AV_LOG_ERROR , \"expected<S2SV_blank>extradata<S2SV_blank>size<S2SV_blank>of<S2SV_blank>%d\\\\n\" , VQA_HEADER_SIZE ) ; return AVERROR ( EINVAL ) ; } s -> vqa_version = s -> avctx -> extradata [ 0 ] ; switch ( s -> vqa_version ) { case 1 : case 2 : break ; case 3 : avpriv_report_missing_feature ( avctx , \"VQA<S2SV_blank>Version<S2SV_blank>%d\" , s -> vqa_version ) ; return AVERROR_PATCHWELCOME ; default : avpriv_request_sample ( avctx , \"VQA<S2SV_blank>Version<S2SV_blank>%i\" , s -> vqa_version ) ; return AVERROR_PATCHWELCOME ; } s -> width = AV_RL16 ( & s -> avctx -> extradata [ 6 ] ) ; s -> height = AV_RL16 ( & s -> avctx -> extradata [ 8 ] ) ; <S2SV_StartBug> if ( ( ret = av_image_check_size ( s -> width , s -> height , 0 , avctx ) ) < 0 ) { <S2SV_EndBug> s -> width = s -> height = 0 ; return ret ; } s -> vector_width = s -> avctx -> extradata [ 10 ] ; s -> vector_height = s -> avctx -> extradata [ 11 ] ; s -> partial_count = s -> partial_countdown = s -> avctx -> extradata [ 13 ] ; if ( ( s -> vector_width != 4 ) || ( ( s -> vector_height != 2 ) && ( s -> vector_height != 4 ) ) ) { return AVERROR_INVALIDDATA ; } if ( s -> width % s -> vector_width || s -> height % s -> vector_height ) { av_log ( avctx , AV_LOG_ERROR , \"Image<S2SV_blank>size<S2SV_blank>not<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>block<S2SV_blank>size\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> codebook_size = MAX_CODEBOOK_SIZE ; s -> codebook = av_malloc ( s -> codebook_size ) ; if ( ! s -> codebook ) goto fail ; s -> next_codebook_buffer = av_malloc ( s -> codebook_size ) ; if ( ! s -> next_codebook_buffer ) goto fail ; s -> decode_buffer_size = ( s -> width / s -> vector_width ) * ( s -> height / s -> vector_height ) * 2 ; s -> decode_buffer = av_mallocz ( s -> decode_buffer_size ) ; if ( ! s -> decode_buffer ) goto fail ; if ( s -> vector_height == 4 ) { codebook_index = 0xFF00 * 16 ; for ( i = 0 ; i < 256 ; i ++ ) for ( j = 0 ; j < 16 ; j ++ ) s -> codebook [ codebook_index ++ ] = i ; } else { codebook_index = 0xF00 * 8 ; for ( i = 0 ; i < 256 ; i ++ ) for ( j = 0 ; j < 8 ; j ++ ) s -> codebook [ codebook_index ++ ] = i ; } s -> next_codebook_buffer_index = 0 ; return 0 ; fail : av_freep ( & s -> codebook ) ; av_freep ( & s -> next_codebook_buffer ) ; av_freep ( & s -> decode_buffer ) ; return AVERROR ( ENOMEM ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ret = ff_set_dimensions ( avctx , <S2SV_ModEnd> s -> width <S2SV_ModStart> s -> height <S2SV_ModEnd> ) ) <\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5195\n\n```\nCWE-20 static void config_monitor ( config_tree * ptree ) { int_node * pfilegen_token ; const char * filegen_string ; const char * filegen_file ; FILEGEN * filegen ; filegen_node * my_node ; attr_val * my_opts ; int filegen_type ; int filegen_flag ; if ( ptree -> stats_dir ) stats_config ( STATS_STATSDIR , ptree -> stats_dir ) ; pfilegen_token = HEAD_PFIFO ( ptree -> stats_list ) ; for ( ; pfilegen_token != NULL ; pfilegen_token = pfilegen_token -> link ) { filegen_string = keyword ( pfilegen_token -> i ) ; filegen = filegen_get ( filegen_string ) ; <S2SV_StartBug> DPRINTF ( 4 , ( \"enabling<S2SV_blank>filegen<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>statistics<S2SV_blank>\\'%s%s\\'\\\\n\" , <S2SV_EndBug> filegen_string , filegen -> prefix , filegen -> basename ) ) ; filegen -> flag |= FGEN_FLAG_ENABLED ; } my_node = HEAD_PFIFO ( ptree -> filegen_opts ) ; for ( ; my_node != NULL ; my_node = my_node -> link ) { filegen_file = keyword ( my_node -> filegen_token ) ; filegen = filegen_get ( filegen_file ) ; <S2SV_StartBug> filegen_flag = filegen -> flag ; <S2SV_EndBug> filegen_type = filegen -> type ; filegen_flag |= FGEN_FLAG_ENABLED ; my_opts = HEAD_PFIFO ( my_node -> options ) ; for ( ; my_opts != NULL ; my_opts = my_opts -> link ) { switch ( my_opts -> attr ) { case T_File : filegen_file = my_opts -> value . s ; break ; case T_Type : switch ( my_opts -> value . i ) { default : NTP_INSIST ( 0 ) ; break ; case T_None : filegen_type = FILEGEN_NONE ; break ; case T_Pid : filegen_type = FILEGEN_PID ; break ; case T_Day : filegen_type = FILEGEN_DAY ; break ; case T_Week : filegen_type = FILEGEN_WEEK ; break ; case T_Month : filegen_type = FILEGEN_MONTH ; break ; case T_Year : filegen_type = FILEGEN_YEAR ; break ; case T_Age : filegen_type = FILEGEN_AGE ; break ; } break ; case T_Flag : switch ( my_opts -> value . i ) { case T_Link : filegen_flag |= FGEN_FLAG_LINK ; break ; case T_Nolink : filegen_flag &= ~ FGEN_FLAG_LINK ; break ; case T_Enable : filegen_flag |= FGEN_FLAG_ENABLED ; break ; case T_Disable : filegen_flag &= ~ FGEN_FLAG_ENABLED ; break ; default : msyslog ( LOG_ERR , \"Unknown<S2SV_blank>filegen<S2SV_blank>flag<S2SV_blank>token<S2SV_blank>%d\" , my_opts -> value . i ) ; exit ( 1 ) ; } break ; default : msyslog ( LOG_ERR , \"Unknown<S2SV_blank>filegen<S2SV_blank>option<S2SV_blank>token<S2SV_blank>%d\" , my_opts -> attr ) ; exit ( 1 ) ; } } filegen_config ( filegen , filegen_file , filegen_type , filegen_flag ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filegen_string ) ; if ( NULL == filegen ) { msyslog ( LOG_ERR , \"stats<S2SV_blank>%s<S2SV_blank>unrecognized\" , filegen_string ) ; continue ; } <S2SV_ModStart> filegen_file ) ; if ( NULL == filegen ) { msyslog ( LOG_ERR , \"filegen<S2SV_blank>category<S2SV_blank>\\'%s\\'<S2SV_blank>unrecognized\" , filegen_file ) ; continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5195\n\n```\nCWE-362 static struct page * follow_page_pte ( struct vm_area_struct * vma , unsigned long address , pmd_t * pmd , unsigned int flags ) { struct mm_struct * mm = vma -> vm_mm ; struct dev_pagemap * pgmap = NULL ; struct page * page ; spinlock_t * ptl ; pte_t * ptep , pte ; retry : if ( unlikely ( pmd_bad ( * pmd ) ) ) return no_page_table ( vma , flags ) ; ptep = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; pte = * ptep ; if ( ! pte_present ( pte ) ) { swp_entry_t entry ; if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) goto no_page ; if ( pte_none ( pte ) ) goto no_page ; entry = pte_to_swp_entry ( pte ) ; if ( ! is_migration_entry ( entry ) ) goto no_page ; pte_unmap_unlock ( ptep , ptl ) ; migration_entry_wait ( mm , pmd , address ) ; goto retry ; } if ( ( flags & FOLL_NUMA ) && pte_protnone ( pte ) ) goto no_page ; <S2SV_StartBug> if ( ( flags & FOLL_WRITE ) && ! pte_write ( pte ) ) { <S2SV_EndBug> pte_unmap_unlock ( ptep , ptl ) ; return NULL ; } page = vm_normal_page ( vma , address , pte ) ; if ( ! page && pte_devmap ( pte ) && ( flags & FOLL_GET ) ) { pgmap = get_dev_pagemap ( pte_pfn ( pte ) , NULL ) ; if ( pgmap ) page = pte_page ( pte ) ; else goto no_page ; } else if ( unlikely ( ! page ) ) { if ( flags & FOLL_DUMP ) { page = ERR_PTR ( - EFAULT ) ; goto out ; } if ( is_zero_pfn ( pte_pfn ( pte ) ) ) { page = pte_page ( pte ) ; } else { int ret ; ret = follow_pfn_pte ( vma , address , ptep , flags ) ; page = ERR_PTR ( ret ) ; goto out ; } } if ( flags & FOLL_SPLIT && PageTransCompound ( page ) ) { int ret ; get_page ( page ) ; pte_unmap_unlock ( ptep , ptl ) ; lock_page ( page ) ; ret = split_huge_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; if ( ret ) return ERR_PTR ( ret ) ; goto retry ; } if ( flags & FOLL_GET ) { get_page ( page ) ; if ( pgmap ) { put_dev_pagemap ( pgmap ) ; pgmap = NULL ; } } if ( flags & FOLL_TOUCH ) { if ( ( flags & FOLL_WRITE ) && ! pte_dirty ( pte ) && ! PageDirty ( page ) ) set_page_dirty ( page ) ; mark_page_accessed ( page ) ; } if ( ( flags & FOLL_MLOCK ) && ( vma -> vm_flags & VM_LOCKED ) ) { if ( PageTransCompound ( page ) ) goto out ; if ( page -> mapping && trylock_page ( page ) ) { lru_add_drain ( ) ; mlock_vma_page ( page ) ; unlock_page ( page ) ; } } out : pte_unmap_unlock ( ptep , ptl ) ; return page ; no_page : pte_unmap_unlock ( ptep , ptl ) ; if ( ! pte_none ( pte ) ) return NULL ; return no_page_table ( vma , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) && ! can_follow_write_pte ( pte , flags <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4127\n\n```\nCWE-399 static void vhost_net_ubuf_put_and_wait ( struct vhost_net_ubuf_ref * ubufs ) { kref_put ( & ubufs -> kref , vhost_net_zerocopy_done_signal ) ; wait_event ( ubufs -> wait , ! atomic_read ( & ubufs -> kref . refcount ) ) ; <S2SV_StartBug> kfree ( ubufs ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 int verify_compat_iovec ( struct msghdr * kern_msg , struct iovec * kern_iov , struct sockaddr_storage * kern_address , int mode ) { int tot_len ; if ( kern_msg -> msg_namelen ) { if ( mode == VERIFY_READ ) { int err = move_addr_to_kernel ( kern_msg -> msg_name , kern_msg -> msg_namelen , kern_address ) ; if ( err < 0 ) return err ; } <S2SV_StartBug> kern_msg -> msg_name = kern_address ; <S2SV_EndBug> } else kern_msg -> msg_name = NULL ; tot_len = iov_from_user_compat_to_kern ( kern_iov , ( struct compat_iovec __user * ) kern_msg -> msg_iov , kern_msg -> msg_iovlen ) ; if ( tot_len >= 0 ) kern_msg -> msg_iov = kern_iov ; return tot_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } if ( kern_msg -> msg_name )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int read_intra_segment_id ( VP9_COMMON * const cm , MACROBLOCKD * const xd , <S2SV_EndBug> int mi_row , int mi_col , vp9_reader * r ) { <S2SV_StartBug> struct segmentation * const seg = & cm -> seg ; <S2SV_EndBug> const BLOCK_SIZE bsize = xd -> mi [ 0 ] -> mbmi . sb_type ; int segment_id ; if ( ! seg -> enabled ) return 0 ; <S2SV_StartBug> if ( ! seg -> update_map ) <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> segment_id = read_segment_id ( r , seg ) ; <S2SV_StartBug> set_segment_id ( cm , bsize , mi_row , mi_col , segment_id ) ; <S2SV_EndBug> return segment_id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const cm , int mi_offset , int x_mis , int y_mis , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> cm -> seg <S2SV_ModEnd> ; int segment_id <S2SV_ModStart> -> update_map ) { copy_segment_id ( cm , cm -> last_frame_seg_map , cm -> current_frame_seg_map , mi_offset , x_mis , y_mis ) ; <S2SV_ModStart> return 0 ; } <S2SV_ModStart> ( cm , mi_offset , x_mis , y_mis <S2SV_ModEnd> , segment_id )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7798\n\n```\nCWE-310 void Init_ossl_cipher ( void ) { # if 0 mOSSL = rb_define_module ( \"OpenSSL\" ) ; eOSSLError = rb_define_class_under ( mOSSL , \"OpenSSLError\" , rb_eStandardError ) ; # endif cCipher = rb_define_class_under ( mOSSL , \"Cipher\" , rb_cObject ) ; eCipherError = rb_define_class_under ( cCipher , \"CipherError\" , eOSSLError ) ; rb_define_alloc_func ( cCipher , ossl_cipher_alloc ) ; rb_define_copy_func ( cCipher , ossl_cipher_copy ) ; rb_define_module_function ( cCipher , \"ciphers\" , ossl_s_ciphers , 0 ) ; rb_define_method ( cCipher , \"initialize\" , ossl_cipher_initialize , 1 ) ; rb_define_method ( cCipher , \"reset\" , ossl_cipher_reset , 0 ) ; rb_define_method ( cCipher , \"encrypt\" , ossl_cipher_encrypt , - 1 ) ; rb_define_method ( cCipher , \"decrypt\" , ossl_cipher_decrypt , - 1 ) ; rb_define_method ( cCipher , \"pkcs5_keyivgen\" , ossl_cipher_pkcs5_keyivgen , - 1 ) ; rb_define_method ( cCipher , \"update\" , ossl_cipher_update , - 1 ) ; rb_define_method ( cCipher , \"final\" , ossl_cipher_final , 0 ) ; rb_define_method ( cCipher , \"name\" , ossl_cipher_name , 0 ) ; rb_define_method ( cCipher , \"key=\" , ossl_cipher_set_key , 1 ) ; rb_define_method ( cCipher , \"auth_data=\" , ossl_cipher_set_auth_data , 1 ) ; rb_define_method ( cCipher , \"auth_tag=\" , ossl_cipher_set_auth_tag , 1 ) ; rb_define_method ( cCipher , \"auth_tag\" , ossl_cipher_get_auth_tag , - 1 ) ; rb_define_method ( cCipher , \"auth_tag_len=\" , ossl_cipher_set_auth_tag_len , 1 ) ; rb_define_method ( cCipher , \"authenticated?\" , ossl_cipher_is_authenticated , 0 ) ; rb_define_method ( cCipher , \"key_len=\" , ossl_cipher_set_key_length , 1 ) ; rb_define_method ( cCipher , \"key_len\" , ossl_cipher_key_length , 0 ) ; rb_define_method ( cCipher , \"iv=\" , ossl_cipher_set_iv , 1 ) ; rb_define_method ( cCipher , \"iv_len=\" , ossl_cipher_set_iv_length , 1 ) ; rb_define_method ( cCipher , \"iv_len\" , ossl_cipher_iv_length , 0 ) ; rb_define_method ( cCipher , \"block_size\" , ossl_cipher_block_size , 0 ) ; rb_define_method ( cCipher , \"padding=\" , ossl_cipher_set_padding , 1 ) ; id_auth_tag_len = rb_intern_const ( \"auth_tag_len\" ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"auth_tag_len\" ) ; id_key_set = rb_intern_const ( \"key_set\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int <S2SV_StartBug> ext2_xattr_cache_insert ( struct buffer_head * bh ) <S2SV_EndBug> { __u32 hash = le32_to_cpu ( HDR ( bh ) -> h_hash ) ; <S2SV_StartBug> struct mb_cache_entry * ce ; <S2SV_EndBug> int error ; <S2SV_StartBug> ce = mb_cache_entry_alloc ( ext2_xattr_cache , GFP_NOFS ) ; <S2SV_EndBug> if ( ! ce ) return - ENOMEM ; <S2SV_StartBug> error = mb_cache_entry_insert ( ce , bh -> b_bdev , bh -> b_blocknr , hash ) ; <S2SV_EndBug> if ( error ) { <S2SV_StartBug> mb_cache_entry_free ( ce ) ; <S2SV_EndBug> if ( error == - EBUSY ) { ea_bdebug ( bh , \"already<S2SV_blank>in<S2SV_blank>cache<S2SV_blank>(%d<S2SV_blank>cache<S2SV_blank>entries)\" , atomic_read ( & ext2_xattr_cache -> c_entry_count ) ) ; error = 0 ; } <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> ea_bdebug ( bh , \"inserting<S2SV_blank>[%x]<S2SV_blank>(%d<S2SV_blank>cache<S2SV_blank>entries)\" , ( int ) hash , <S2SV_EndBug> atomic_read ( & ext2_xattr_cache -> c_entry_count ) ) ; mb_cache_entry_release ( ce ) ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int ext2_xattr_cache_insert ( struct mb2_cache * cache , <S2SV_ModStart> h_hash ) ; <S2SV_ModEnd> int error ; <S2SV_ModStart> int error ; error = mb2_cache_entry_create ( cache , GFP_NOFS , hash <S2SV_ModEnd> , bh -> <S2SV_ModStart> bh -> b_blocknr <S2SV_ModEnd> ) ; if <S2SV_ModStart> error ) { <S2SV_ModEnd> if ( error <S2SV_ModStart> } } else <S2SV_ModEnd> ea_bdebug ( bh <S2SV_ModStart> ( bh , \"inserting<S2SV_blank>[%x]\" <S2SV_ModEnd> , ( int <S2SV_ModStart> int ) hash ) ; <S2SV_ModEnd> return error ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2782\n\n```\nCWE-000 static int treo_attach ( struct usb_serial * serial ) { struct usb_serial_port * swap_port ; if ( ! ( ( le16_to_cpu ( serial -> dev -> descriptor . idVendor ) == HANDSPRING_VENDOR_ID ) || ( le16_to_cpu ( serial -> dev -> descriptor . idVendor ) == KYOCERA_VENDOR_ID ) ) || ( serial -> num_interrupt_in == 0 ) ) return 0 ; <S2SV_StartBug> # define COPY_PORT ( dest , src ) do { int i ; for ( i = 0 ; i < ARRAY_SIZE ( src -> read_urbs ) ; ++ i ) { dest -> read_urbs [ i ] = src -> read_urbs [ i ] ; dest -> read_urbs [ i ] -> context = dest ; dest -> bulk_in_buffers [ i ] = src -> bulk_in_buffers [ i ] ; } dest -> read_urb = src -> read_urb ; dest -> bulk_in_endpointAddress = src -> bulk_in_endpointAddress ; dest -> bulk_in_buffer = src -> bulk_in_buffer ; dest -> bulk_in_size = src -> bulk_in_size ; dest -> interrupt_in_urb = src -> interrupt_in_urb ; dest -> interrupt_in_urb -> context = dest ; dest -> interrupt_in_endpointAddress = src -> interrupt_in_endpointAddress ; dest -> interrupt_in_buffer = src -> interrupt_in_buffer ; } while ( 0 ) ; <S2SV_EndBug> swap_port = kmalloc ( sizeof ( * swap_port ) , GFP_KERNEL ) ; if ( ! swap_port ) return - ENOMEM ; COPY_PORT ( swap_port , serial -> port [ 0 ] ) ; COPY_PORT ( serial -> port [ 0 ] , serial -> port [ 1 ] ) ; COPY_PORT ( serial -> port [ 1 ] , swap_port ) ; kfree ( swap_port ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; if ( serial -> num_bulk_in < 2 || serial -> num_interrupt_in < 2 ) { dev_err ( & serial -> interface -> dev , \"missing<S2SV_blank>endpoints\\\\n\" ) ; return - ENODEV ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_decoder_remove ( VP9Decoder * pbi ) { <S2SV_StartBug> VP9_COMMON * const cm = & pbi -> common ; <S2SV_EndBug> int i ; <S2SV_StartBug> vp9_remove_common ( cm ) ; <S2SV_EndBug> vp9_worker_end ( & pbi -> lf_worker ) ; <S2SV_StartBug> vpx_free ( pbi -> lf_worker . data1 ) ; <S2SV_EndBug> for ( i = 0 ; i < pbi -> num_tile_workers ; ++ i ) { <S2SV_StartBug> VP9Worker * const worker = & pbi -> tile_workers [ i ] ; <S2SV_EndBug> <S2SV_StartBug> vp9_worker_end ( worker ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_free ( worker -> data1 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_free ( worker -> data2 ) ; <S2SV_EndBug> } vpx_free ( pbi -> tile_workers ) ; <S2SV_StartBug> if ( pbi -> num_tile_workers ) { <S2SV_EndBug> const int sb_rows = mi_cols_aligned_to_sb ( cm -> mi_rows ) >> MI_BLOCK_SIZE_LOG2 ; <S2SV_StartBug> vp9_loop_filter_dealloc ( & pbi -> lf_row_sync , sb_rows ) ; <S2SV_EndBug> } vpx_free ( pbi ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pbi ) { <S2SV_ModEnd> int i ; <S2SV_ModStart> int i ; vpx_get_worker_interface ( ) -> end <S2SV_ModEnd> ( & pbi <S2SV_ModStart> lf_worker . data1 ) ; vpx_free ( pbi -> tile_data <S2SV_ModStart> i ) { VPxWorker <S2SV_ModEnd> * const worker <S2SV_ModStart> i ] ; vpx_get_worker_interface ( ) -> end <S2SV_ModEnd> ( worker ) <S2SV_ModStart> worker ) ; } vpx_free ( pbi -> tile_worker_data <S2SV_ModEnd> ) ; vpx_free <S2SV_ModStart> ; vpx_free ( pbi -> tile_worker_info ) ; <S2SV_ModEnd> vpx_free ( pbi <S2SV_ModStart> pbi -> num_tile_workers > 0 ) { <S2SV_ModEnd> vp9_loop_filter_dealloc ( & <S2SV_ModStart> pbi -> lf_row_sync <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7448\n\n```\nCWE-22 void wiki_handle_http_request ( HttpRequest * req ) { HttpResponse * res = http_response_new ( req ) ; char * page = http_request_get_path_info ( req ) ; char * command = http_request_get_query_string ( req ) ; char * wikitext = \"\" ; util_dehttpize ( page ) ; if ( ! strcmp ( page , \"/\" ) ) { if ( access ( \"WikiHome\" , R_OK ) != 0 ) wiki_redirect ( res , \"/WikiHome?create\" ) ; page = \"/WikiHome\" ; } if ( ! strcmp ( page , \"/styles.css\" ) ) { http_response_set_content_type ( res , \"text/css\" ) ; http_response_printf ( res , \"%s\" , CssData ) ; http_response_send ( res ) ; exit ( 0 ) ; } if ( ! strcmp ( page , \"/favicon.ico\" ) ) { http_response_set_content_type ( res , \"image/ico\" ) ; http_response_set_data ( res , FaviconData , FaviconDataLen ) ; http_response_send ( res ) ; exit ( 0 ) ; } page = page + 1 ; if ( ! strncmp ( page , \"api/\" , 4 ) ) { char * p ; page += 4 ; for ( p = page ; * p != '\\\\0' ; p ++ ) if ( * p == '?' ) { * p = '\\\\0' ; break ; } wiki_handle_rest_call ( req , res , page ) ; exit ( 0 ) ; } <S2SV_StartBug> if ( strchr ( page , '/' ) ) <S2SV_EndBug> { http_response_set_status ( res , 404 , \"Not<S2SV_blank>Found\" ) ; http_response_printf ( res , \"<html><body>404<S2SV_blank>Not<S2SV_blank>Found</body></html>\\\\n\" ) ; http_response_send ( res ) ; exit ( 0 ) ; } if ( ! strcmp ( page , \"Changes\" ) ) { wiki_show_changes_page ( res ) ; } else if ( ! strcmp ( page , \"ChangesRss\" ) ) { wiki_show_changes_page_rss ( res ) ; } else if ( ! strcmp ( page , \"Search\" ) ) { wiki_show_search_results_page ( res , http_request_param_get ( req , \"expr\" ) ) ; } else if ( ! strcmp ( page , \"Create\" ) ) { if ( ( wikitext = http_request_param_get ( req , \"title\" ) ) != NULL ) { wiki_redirect ( res , http_request_param_get ( req , \"title\" ) ) ; } else { wiki_show_create_page ( res ) ; } } else { if ( ( wikitext = http_request_param_get ( req , \"wikitext\" ) ) != NULL ) { file_write ( page , wikitext ) ; } if ( access ( page , R_OK ) == 0 ) { wikitext = file_read ( page ) ; if ( ! strcmp ( command , \"edit\" ) ) { wiki_show_edit_page ( res , wikitext , page ) ; } else { wiki_show_page ( res , wikitext , page ) ; } } else { if ( ! strcmp ( command , \"create\" ) ) { wiki_show_edit_page ( res , NULL , page ) ; } else { char buf [ 1024 ] ; snprintf ( buf , 1024 , \"%s?create\" , page ) ; wiki_redirect ( res , buf ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ! page_name_is_good ( page <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 static int cg_rmdir ( const char * path ) { struct fuse_context * fc = fuse_get_context ( ) ; <S2SV_StartBug> char * fpath = NULL , * cgdir = NULL , * controller ; <S2SV_EndBug> const char * cgroup ; int ret ; if ( ! fc ) return - EIO ; controller = pick_controller_from_path ( fc , path ) ; if ( ! controller ) return - EINVAL ; cgroup = find_cgroup_in_path ( path ) ; if ( ! cgroup ) return - EINVAL ; get_cgdir_and_path ( cgroup , & cgdir , & fpath ) ; if ( ! fpath ) { ret = - EINVAL ; goto out ; } <S2SV_StartBug> fprintf ( stderr , \"rmdir:<S2SV_blank>verifying<S2SV_blank>access<S2SV_blank>to<S2SV_blank>%s:%s<S2SV_blank>(req<S2SV_blank>path<S2SV_blank>%s)\\\\n\" , <S2SV_EndBug> controller , cgdir , path ) ; if ( ! fc_may_access ( fc , controller , cgdir , NULL , O_WRONLY ) ) { ret = - EACCES ; goto out ; } <S2SV_StartBug> if ( ! caller_is_in_ancestor ( fc -> pid , controller , cgroup , NULL ) ) { <S2SV_EndBug> ret = - EACCES ; goto out ; } <S2SV_StartBug> if ( ! cgfs_remove ( controller , cgroup ) ) { <S2SV_EndBug> ret = - EINVAL ; goto out ; } ret = 0 ; out : free ( cgdir ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * controller , * next = NULL <S2SV_ModStart> out ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> , cgroup , & next ) ) { if ( ! fpath || strcmp ( next , fpath ) == 0 ) ret = - EBUSY ; else ret = - ENOENT ; goto out ; } if ( ! fc_may_access ( fc , controller , cgdir , NULL , O_WRONLY <S2SV_ModEnd> ) ) { <S2SV_ModStart> if ( ! caller_is_in_ancestor ( fc -> pid , controller , cgroup , NULL ) ) { ret = - EACCES ; goto out ; } if ( ! <S2SV_ModStart> cgdir ) ; free ( next ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6767\n\n```\nCWE-125 int WriteRiffHeader ( FILE * outfile , WavpackContext * wpc , int64_t total_samples , int qmode ) { <S2SV_StartBug> int do_rf64 = 0 , write_junk = 1 ; <S2SV_EndBug> ChunkHeader ds64hdr , datahdr , fmthdr ; RiffChunkHeader riffhdr ; <S2SV_StartBug> DS64Chunk ds64_chunk ; <S2SV_EndBug> JunkChunk junkchunk ; WaveHeader wavhdr ; uint32_t bcount ; int64_t total_data_bytes , total_riff_bytes ; int num_channels = WavpackGetNumChannels ( wpc ) ; int32_t channel_mask = WavpackGetChannelMask ( wpc ) ; int32_t sample_rate = WavpackGetSampleRate ( wpc ) ; int bytes_per_sample = WavpackGetBytesPerSample ( wpc ) ; int bits_per_sample = WavpackGetBitsPerSample ( wpc ) ; int format = WavpackGetFloatNormExp ( wpc ) ? 3 : 1 ; int wavhdrsize = 16 ; if ( format == 3 && WavpackGetFloatNormExp ( wpc ) != 127 ) { error_line ( \"can\\'t<S2SV_blank>create<S2SV_blank>valid<S2SV_blank>RIFF<S2SV_blank>wav<S2SV_blank>header<S2SV_blank>for<S2SV_blank>non-normalized<S2SV_blank>floating<S2SV_blank>data!\" ) ; return FALSE ; } if ( total_samples == - 1 ) total_samples = 0x7ffff000 / ( bytes_per_sample * num_channels ) ; total_data_bytes = total_samples * bytes_per_sample * num_channels ; if ( total_data_bytes > 0xff000000 ) { if ( debug_logging_mode ) error_line ( \"total_data_bytes<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>so<S2SV_blank>rf64\" , total_data_bytes ) ; write_junk = 0 ; do_rf64 = 1 ; } else if ( debug_logging_mode ) error_line ( \"total_data_bytes<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>so<S2SV_blank>riff\" , total_data_bytes ) ; CLEAR ( wavhdr ) ; wavhdr . FormatTag = format ; wavhdr . NumChannels = num_channels ; wavhdr . SampleRate = sample_rate ; wavhdr . BytesPerSecond = sample_rate * num_channels * bytes_per_sample ; wavhdr . BlockAlign = bytes_per_sample * num_channels ; wavhdr . BitsPerSample = bits_per_sample ; if ( num_channels > 2 || channel_mask != 0x5 - num_channels ) { wavhdrsize = sizeof ( wavhdr ) ; wavhdr . cbSize = 22 ; wavhdr . ValidBitsPerSample = bits_per_sample ; wavhdr . SubFormat = format ; wavhdr . ChannelMask = channel_mask ; wavhdr . FormatTag = 0xfffe ; wavhdr . BitsPerSample = bytes_per_sample * 8 ; wavhdr . GUID [ 4 ] = 0x10 ; wavhdr . GUID [ 6 ] = 0x80 ; wavhdr . GUID [ 9 ] = 0xaa ; wavhdr . GUID [ 11 ] = 0x38 ; wavhdr . GUID [ 12 ] = 0x9b ; wavhdr . GUID [ 13 ] = 0x71 ; } strncpy ( riffhdr . ckID , do_rf64 ? \"RF64\" : \"RIFF\" , sizeof ( riffhdr . ckID ) ) ; strncpy ( riffhdr . formType , \"WAVE\" , sizeof ( riffhdr . formType ) ) ; total_riff_bytes = sizeof ( riffhdr ) + wavhdrsize + sizeof ( datahdr ) + ( ( total_data_bytes + 1 ) & ~ ( int64_t ) 1 ) ; if ( do_rf64 ) total_riff_bytes += sizeof ( ds64hdr ) + sizeof ( ds64_chunk ) ; <S2SV_StartBug> if ( write_junk ) total_riff_bytes += sizeof ( junkchunk ) ; <S2SV_EndBug> strncpy ( fmthdr . ckID , \"fmt<S2SV_blank>\" , sizeof ( fmthdr . ckID ) ) ; strncpy ( datahdr . ckID , \"data\" , sizeof ( datahdr . ckID ) ) ; fmthdr . ckSize = wavhdrsize ; if ( write_junk ) { CLEAR ( junkchunk ) ; strncpy ( junkchunk . ckID , \"junk\" , sizeof ( junkchunk . ckID ) ) ; junkchunk . ckSize = sizeof ( junkchunk ) - 8 ; WavpackNativeToLittleEndian ( & junkchunk , ChunkHeaderFormat ) ; } if ( do_rf64 ) { strncpy ( ds64hdr . ckID , \"ds64\" , sizeof ( ds64hdr . ckID ) ) ; <S2SV_StartBug> ds64hdr . ckSize = sizeof ( ds64_chunk ) ; <S2SV_EndBug> CLEAR ( ds64_chunk ) ; ds64_chunk . riffSize64 = total_riff_bytes ; ds64_chunk . dataSize64 = total_data_bytes ; <S2SV_StartBug> ds64_chunk . sampleCount64 = total_samples ; <S2SV_EndBug> riffhdr . ckSize = ( uint32_t ) - 1 ; datahdr . ckSize = ( uint32_t ) - 1 ; WavpackNativeToLittleEndian ( & ds64hdr , ChunkHeaderFormat ) ; WavpackNativeToLittleEndian ( & ds64_chunk , DS64ChunkFormat ) ; } else { riffhdr . ckSize = ( uint32_t ) total_riff_bytes ; datahdr . ckSize = ( uint32_t ) total_data_bytes ; } <S2SV_StartBug> WavpackNativeToLittleEndian ( & riffhdr , ChunkHeaderFormat ) ; <S2SV_EndBug> WavpackNativeToLittleEndian ( & fmthdr , ChunkHeaderFormat ) ; WavpackNativeToLittleEndian ( & wavhdr , WaveHeaderFormat ) ; WavpackNativeToLittleEndian ( & datahdr , ChunkHeaderFormat ) ; if ( ! DoWriteFile ( outfile , & riffhdr , sizeof ( riffhdr ) , & bcount ) || bcount != sizeof ( riffhdr ) || ( do_rf64 && ( ! DoWriteFile ( outfile , & ds64hdr , sizeof ( ds64hdr ) , & bcount ) || bcount != sizeof ( ds64hdr ) ) ) || <S2SV_StartBug> ( do_rf64 && ( ! DoWriteFile ( outfile , & ds64_chunk , sizeof ( ds64_chunk ) , & bcount ) || bcount != sizeof ( ds64_chunk ) ) ) || <S2SV_EndBug> ( write_junk && ( ! DoWriteFile ( outfile , & junkchunk , sizeof ( junkchunk ) , & bcount ) || bcount != sizeof ( junkchunk ) ) ) || ! DoWriteFile ( outfile , & fmthdr , sizeof ( fmthdr ) , & bcount ) || bcount != sizeof ( fmthdr ) || ! DoWriteFile ( outfile , & wavhdr , wavhdrsize , & bcount ) || bcount != wavhdrsize || ! DoWriteFile ( outfile , & datahdr , sizeof ( datahdr ) , & bcount ) || bcount != sizeof ( datahdr ) ) { error_line ( \"can\\'t<S2SV_blank>write<S2SV_blank>.WAV<S2SV_blank>data,<S2SV_blank>disk<S2SV_blank>probably<S2SV_blank>full!\" ) ; return FALSE ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> write_junk = 1 , table_length = 0 <S2SV_ModStart> ; DS64Chunk ds64_chunk ; CS64Chunk cs64_chunk <S2SV_ModStart> ds64_chunk ) ; total_riff_bytes += table_length * sizeof ( CS64Chunk ) ; if ( write_junk ) total_riff_bytes += <S2SV_ModEnd> sizeof ( junkchunk <S2SV_ModStart> ( ds64_chunk ) + ( table_length * sizeof ( CS64Chunk ) ) <S2SV_ModStart> sampleCount64 = total_samples ; ds64_chunk . tableLength = table_length <S2SV_ModStart> total_data_bytes ; } if ( table_length ) { strncpy ( cs64_chunk . ckID , \"dmmy\" , sizeof ( cs64_chunk . ckID ) ) ; cs64_chunk . chunkSize64 = 12345678 ; WavpackNativeToLittleEndian ( & cs64_chunk , CS64ChunkFormat ) ; } <S2SV_ModStart> ) ) ) ) { error_line ( \"can\\'t<S2SV_blank>write<S2SV_blank>.WAV<S2SV_blank>data,<S2SV_blank>disk<S2SV_blank>probably<S2SV_blank>full!\" ) ; return FALSE ; } while ( table_length -- ) if ( ! DoWriteFile ( outfile , & cs64_chunk , sizeof ( cs64_chunk ) , & bcount ) || bcount != sizeof ( cs64_chunk ) ) { error_line ( \"can\\'t<S2SV_blank>write<S2SV_blank>.WAV<S2SV_blank>data,<S2SV_blank>disk<S2SV_blank>probably<S2SV_blank>full!\" ) ; return FALSE ; } if ( <S2SV_ModEnd> ( write_junk &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jas_image_t * jp2_decode ( jas_stream_t * in , char * optstr ) { jp2_box_t * box ; int found ; jas_image_t * image ; jp2_dec_t * dec ; bool samedtype ; int dtype ; unsigned int i ; jp2_cmap_t * cmapd ; jp2_pclr_t * pclrd ; jp2_cdef_t * cdefd ; unsigned int channo ; int newcmptno ; int_fast32_t * lutents ; # if 0 jp2_cdefchan_t * cdefent ; int cmptno ; # endif jp2_cmapent_t * cmapent ; jas_icchdr_t icchdr ; jas_iccprof_t * iccprof ; dec = 0 ; box = 0 ; image = 0 ; if ( ! ( dec = jp2_dec_create ( ) ) ) { goto error ; } if ( ! ( box = jp2_box_get ( in ) ) ) { jas_eprintf ( \"error:<S2SV_blank>cannot<S2SV_blank>get<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( box -> type != JP2_BOX_JP ) { jas_eprintf ( \"error:<S2SV_blank>expecting<S2SV_blank>signature<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( box -> data . jp . magic != JP2_JP_MAGIC ) { jas_eprintf ( \"incorrect<S2SV_blank>magic<S2SV_blank>number\\\\n\" ) ; goto error ; } jp2_box_destroy ( box ) ; box = 0 ; if ( ! ( box = jp2_box_get ( in ) ) ) { goto error ; } if ( box -> type != JP2_BOX_FTYP ) { jas_eprintf ( \"expecting<S2SV_blank>file<S2SV_blank>type<S2SV_blank>box\\\\n\" ) ; goto error ; } jp2_box_destroy ( box ) ; box = 0 ; found = 0 ; while ( ( box = jp2_box_get ( in ) ) ) { if ( jas_getdbglevel ( ) >= 1 ) { jas_eprintf ( \"got<S2SV_blank>box<S2SV_blank>type<S2SV_blank>%s\\\\n\" , box -> info -> name ) ; } switch ( box -> type ) { case JP2_BOX_JP2C : found = 1 ; break ; case JP2_BOX_IHDR : if ( ! dec -> ihdr ) { dec -> ihdr = box ; box = 0 ; } break ; case JP2_BOX_BPCC : if ( ! dec -> bpcc ) { dec -> bpcc = box ; box = 0 ; } break ; case JP2_BOX_CDEF : if ( ! dec -> cdef ) { dec -> cdef = box ; box = 0 ; } break ; case JP2_BOX_PCLR : if ( ! dec -> pclr ) { dec -> pclr = box ; box = 0 ; } break ; case JP2_BOX_CMAP : if ( ! dec -> cmap ) { dec -> cmap = box ; box = 0 ; } break ; case JP2_BOX_COLR : if ( ! dec -> colr ) { dec -> colr = box ; box = 0 ; } break ; } if ( box ) { jp2_box_destroy ( box ) ; box = 0 ; } if ( found ) { break ; } } if ( ! found ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>code<S2SV_blank>stream<S2SV_blank>found\\\\n\" ) ; goto error ; } if ( ! ( dec -> image = jpc_decode ( in , optstr ) ) ) { jas_eprintf ( \"error:<S2SV_blank>cannot<S2SV_blank>decode<S2SV_blank>code<S2SV_blank>stream\\\\n\" ) ; goto error ; } if ( ! dec -> ihdr ) { jas_eprintf ( \"error:<S2SV_blank>missing<S2SV_blank>IHDR<S2SV_blank>box\\\\n\" ) ; goto error ; } <S2SV_StartBug> if ( dec -> ihdr -> data . ihdr . numcmpts != JAS_CAST ( uint , <S2SV_EndBug> jas_image_numcmpts ( dec -> image ) ) ) { jas_eprintf ( \"warning:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>mismatch\\\\n\" ) ; } if ( ! jas_image_numcmpts ( dec -> image ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>components\\\\n\" ) ; goto error ; } samedtype = true ; dtype = jas_image_cmptdtype ( dec -> image , 0 ) ; <S2SV_StartBug> for ( i = 1 ; i < JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ; ++ i ) { <S2SV_EndBug> if ( jas_image_cmptdtype ( dec -> image , i ) != dtype ) { samedtype = false ; break ; } } if ( ( samedtype && dec -> ihdr -> data . ihdr . bpc != JP2_DTYPETOBPC ( dtype ) ) || ( ! samedtype && dec -> ihdr -> data . ihdr . bpc != JP2_IHDR_BPCNULL ) ) { jas_eprintf ( \"warning:<S2SV_blank>component<S2SV_blank>data<S2SV_blank>type<S2SV_blank>mismatch\\\\n\" ) ; } if ( dec -> ihdr -> data . ihdr . comptype != JP2_IHDR_COMPTYPE ) { jas_eprintf ( \"error:<S2SV_blank>unsupported<S2SV_blank>compression<S2SV_blank>type\\\\n\" ) ; goto error ; } if ( dec -> bpcc ) { <S2SV_StartBug> if ( dec -> bpcc -> data . bpcc . numcmpts != JAS_CAST ( uint , jas_image_numcmpts ( <S2SV_EndBug> dec -> image ) ) ) { jas_eprintf ( \"warning:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>mismatch\\\\n\" ) ; } if ( ! samedtype ) { <S2SV_StartBug> for ( i = 0 ; i < JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ; <S2SV_EndBug> ++ i ) { if ( jas_image_cmptdtype ( dec -> image , i ) != JP2_BPCTODTYPE ( dec -> bpcc -> data . bpcc . bpcs [ i ] ) ) { jas_eprintf ( \"warning:<S2SV_blank>component<S2SV_blank>data<S2SV_blank>type<S2SV_blank>mismatch\\\\n\" ) ; } } } else { jas_eprintf ( \"warning:<S2SV_blank>superfluous<S2SV_blank>BPCC<S2SV_blank>box\\\\n\" ) ; } } if ( ! dec -> colr ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>COLR<S2SV_blank>box\\\\n\" ) ; goto error ; } switch ( dec -> colr -> data . colr . method ) { case JP2_COLR_ENUM : jas_image_setclrspc ( dec -> image , jp2_getcs ( & dec -> colr -> data . colr ) ) ; break ; case JP2_COLR_ICC : iccprof = jas_iccprof_createfrombuf ( dec -> colr -> data . colr . iccp , dec -> colr -> data . colr . iccplen ) ; if ( ! iccprof ) { jas_eprintf ( \"error:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>ICC<S2SV_blank>profile\\\\n\" ) ; goto error ; } jas_iccprof_gethdr ( iccprof , & icchdr ) ; jas_eprintf ( \"ICC<S2SV_blank>Profile<S2SV_blank>CS<S2SV_blank>%08x\\\\n\" , icchdr . colorspc ) ; jas_image_setclrspc ( dec -> image , fromiccpcs ( icchdr . colorspc ) ) ; dec -> image -> cmprof_ = jas_cmprof_createfromiccprof ( iccprof ) ; assert ( dec -> image -> cmprof_ ) ; jas_iccprof_destroy ( iccprof ) ; break ; } if ( dec -> cmap && ! dec -> pclr ) { jas_eprintf ( \"warning:<S2SV_blank>missing<S2SV_blank>PCLR<S2SV_blank>box<S2SV_blank>or<S2SV_blank>superfluous<S2SV_blank>CMAP<S2SV_blank>box\\\\n\" ) ; jp2_box_destroy ( dec -> cmap ) ; dec -> cmap = 0 ; } if ( ! dec -> cmap && dec -> pclr ) { jas_eprintf ( \"warning:<S2SV_blank>missing<S2SV_blank>CMAP<S2SV_blank>box<S2SV_blank>or<S2SV_blank>superfluous<S2SV_blank>PCLR<S2SV_blank>box\\\\n\" ) ; jp2_box_destroy ( dec -> pclr ) ; dec -> pclr = 0 ; } dec -> numchans = dec -> cmap ? dec -> cmap -> data . cmap . numchans : <S2SV_StartBug> JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ; <S2SV_EndBug> if ( dec -> cmap ) { for ( i = 0 ; i < dec -> numchans ; ++ i ) { <S2SV_StartBug> if ( dec -> cmap -> data . cmap . ents [ i ] . cmptno >= JAS_CAST ( uint , <S2SV_EndBug> jas_image_numcmpts ( dec -> image ) ) ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>component<S2SV_blank>number<S2SV_blank>in<S2SV_blank>CMAP<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( dec -> cmap -> data . cmap . ents [ i ] . pcol >= dec -> pclr -> data . pclr . numchans ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>CMAP<S2SV_blank>LUT<S2SV_blank>index\\\\n\" ) ; goto error ; } } } if ( ! ( dec -> chantocmptlut = jas_alloc2 ( dec -> numchans , sizeof ( uint_fast16_t ) ) ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>memory\\\\n\" ) ; goto error ; } if ( ! dec -> cmap ) { for ( i = 0 ; i < dec -> numchans ; ++ i ) { dec -> chantocmptlut [ i ] = i ; } } else { cmapd = & dec -> cmap -> data . cmap ; pclrd = & dec -> pclr -> data . pclr ; cdefd = & dec -> cdef -> data . cdef ; for ( channo = 0 ; channo < cmapd -> numchans ; ++ channo ) { cmapent = & cmapd -> ents [ channo ] ; if ( cmapent -> map == JP2_CMAP_DIRECT ) { dec -> chantocmptlut [ channo ] = channo ; } else if ( cmapent -> map == JP2_CMAP_PALETTE ) { lutents = jas_alloc2 ( pclrd -> numlutents , sizeof ( int_fast32_t ) ) ; for ( i = 0 ; i < pclrd -> numlutents ; ++ i ) { lutents [ i ] = pclrd -> lutdata [ cmapent -> pcol + i * pclrd -> numchans ] ; } newcmptno = jas_image_numcmpts ( dec -> image ) ; jas_image_depalettize ( dec -> image , cmapent -> cmptno , pclrd -> numlutents , lutents , JP2_BPCTODTYPE ( pclrd -> bpc [ cmapent -> pcol ] ) , newcmptno ) ; dec -> chantocmptlut [ channo ] = newcmptno ; jas_free ( lutents ) ; # if 0 if ( dec -> cdef ) { cdefent = jp2_cdef_lookup ( cdefd , channo ) ; if ( ! cdefent ) { abort ( ) ; } jas_image_setcmpttype ( dec -> image , newcmptno , jp2_getct ( jas_image_clrspc ( dec -> image ) , cdefent -> type , cdefent -> assoc ) ) ; } else { jas_image_setcmpttype ( dec -> image , newcmptno , jp2_getct ( jas_image_clrspc ( dec -> image ) , 0 , channo + 1 ) ) ; } # endif } } } <S2SV_StartBug> for ( i = 0 ; i < JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ; ++ i ) { <S2SV_EndBug> jas_image_setcmpttype ( dec -> image , i , JAS_IMAGE_CT_UNKNOWN ) ; } if ( dec -> cdef ) { for ( i = 0 ; i < dec -> numchans ; ++ i ) { if ( dec -> cdef -> data . cdef . ents [ i ] . channo >= dec -> numchans ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>channel<S2SV_blank>number<S2SV_blank>in<S2SV_blank>CDEF<S2SV_blank>box\\\\n\" ) ; goto error ; } jas_image_setcmpttype ( dec -> image , dec -> chantocmptlut [ dec -> cdef -> data . cdef . ents [ i ] . channo ] , jp2_getct ( jas_image_clrspc ( dec -> image ) , dec -> cdef -> data . cdef . ents [ i ] . type , dec -> cdef -> data . cdef . ents [ i ] . assoc ) ) ; } } else { for ( i = 0 ; i < dec -> numchans ; ++ i ) { jas_image_setcmpttype ( dec -> image , dec -> chantocmptlut [ i ] , jp2_getct ( jas_image_clrspc ( dec -> image ) , 0 , i + 1 ) ) ; } } for ( i = jas_image_numcmpts ( dec -> image ) ; i > 0 ; -- i ) { if ( jas_image_cmpttype ( dec -> image , i - 1 ) == JAS_IMAGE_CT_UNKNOWN ) { jas_image_delcmpt ( dec -> image , i - 1 ) ; } } if ( ! jas_image_numcmpts ( dec -> image ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>components\\\\n\" ) ; goto error ; } # if 0 jas_eprintf ( \"no<S2SV_blank>of<S2SV_blank>components<S2SV_blank>is<S2SV_blank>%d\\\\n\" , jas_image_numcmpts ( dec -> image ) ) ; # endif image = dec -> image ; dec -> image = 0 ; jp2_dec_destroy ( dec ) ; return image ; error : if ( box ) { jp2_box_destroy ( box ) ; } if ( dec ) { jp2_dec_destroy ( dec ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_image_numcmpts ( <S2SV_ModStart> < JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_image_numcmpts ( <S2SV_ModStart> != JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_image_numcmpts ( <S2SV_ModStart> < JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_image_numcmpts ( <S2SV_ModStart> : JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_image_numcmpts ( <S2SV_ModStart> >= JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_image_numcmpts ( <S2SV_ModStart> < JAS_CAST ( jas_uint <S2SV_ModEnd> , jas_image_numcmpts (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10248\n\n```\nCWE-476 int jpc_tsfb_synthesize ( jpc_tsfb_t * tsfb , jas_seq2d_t * a ) { <S2SV_StartBug> return ( tsfb -> numlvls > 0 ) ? jpc_tsfb_synthesize2 ( tsfb , <S2SV_EndBug> jas_seq2d_getref ( a , jas_seq2d_xstart ( a ) , jas_seq2d_ystart ( a ) ) , jas_seq2d_xstart ( a ) , jas_seq2d_ystart ( a ) , jas_seq2d_width ( a ) , jas_seq2d_height ( a ) , jas_seq2d_rowstep ( a ) , tsfb -> numlvls - 1 ) : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> numlvls > 0 && jas_seq2d_size ( a )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_init_port ( struct asd_sas_port * port , struct sas_ha_struct * sas_ha , int i ) { memset ( port , 0 , sizeof ( * port ) ) ; port -> id = i ; INIT_LIST_HEAD ( & port -> dev_list ) ; INIT_LIST_HEAD ( & port -> disco_list ) ; INIT_LIST_HEAD ( & port -> destroy_list ) ; <S2SV_StartBug> spin_lock_init ( & port -> phy_list_lock ) ; <S2SV_EndBug> INIT_LIST_HEAD ( & port -> phy_list ) ; port -> ha = sas_ha ; spin_lock_init ( & port -> dev_list_lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> destroy_list ) ; INIT_LIST_HEAD ( & port -> sas_port_del_list ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7339\n\n```\nCWE-476 static int rds_ib_laddr_check ( __be32 addr ) { int ret ; struct rdma_cm_id * cm_id ; struct sockaddr_in sin ; cm_id = rdma_create_id ( NULL , NULL , RDMA_PS_TCP , IB_QPT_RC ) ; if ( IS_ERR ( cm_id ) ) return PTR_ERR ( cm_id ) ; memset ( & sin , 0 , sizeof ( sin ) ) ; sin . sin_family = AF_INET ; sin . sin_addr . s_addr = addr ; ret = rdma_bind_addr ( cm_id , ( struct sockaddr * ) & sin ) ; <S2SV_StartBug> if ( ret || cm_id -> device -> node_type != RDMA_NODE_IB_CA ) <S2SV_EndBug> ret = - EADDRNOTAVAIL ; rdsdebug ( \"addr<S2SV_blank>%pI4<S2SV_blank>ret<S2SV_blank>%d<S2SV_blank>node<S2SV_blank>type<S2SV_blank>%d\\\\n\" , & addr , ret , cm_id -> device ? cm_id -> device -> node_type : - 1 ) ; rdma_destroy_id ( cm_id ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ret || ! cm_id -> device ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2523\n\n```\nCWE-20 static int dccp_error ( struct net * net , struct nf_conn * tmpl , struct sk_buff * skb , unsigned int dataoff , enum ip_conntrack_info * ctinfo , u_int8_t pf , unsigned int hooknum ) { struct dccp_hdr _dh , * dh ; unsigned int dccp_len = skb -> len - dataoff ; unsigned int cscov ; const char * msg ; <S2SV_StartBug> dh = skb_header_pointer ( skb , dataoff , sizeof ( _dh ) , & dh ) ; <S2SV_EndBug> if ( dh == NULL ) { msg = \"nf_ct_dccp:<S2SV_blank>short<S2SV_blank>packet<S2SV_blank>\" ; goto out_invalid ; } if ( dh -> dccph_doff * 4 < sizeof ( struct dccp_hdr ) || dh -> dccph_doff * 4 > dccp_len ) { msg = \"nf_ct_dccp:<S2SV_blank>truncated/malformed<S2SV_blank>packet<S2SV_blank>\" ; goto out_invalid ; } cscov = dccp_len ; if ( dh -> dccph_cscov ) { cscov = ( dh -> dccph_cscov - 1 ) * 4 ; if ( cscov > dccp_len ) { msg = \"nf_ct_dccp:<S2SV_blank>bad<S2SV_blank>checksum<S2SV_blank>coverage<S2SV_blank>\" ; goto out_invalid ; } } if ( net -> ct . sysctl_checksum && hooknum == NF_INET_PRE_ROUTING && nf_checksum_partial ( skb , hooknum , dataoff , cscov , IPPROTO_DCCP , pf ) ) { msg = \"nf_ct_dccp:<S2SV_blank>bad<S2SV_blank>checksum<S2SV_blank>\" ; goto out_invalid ; } if ( dh -> dccph_type >= DCCP_PKT_INVALID ) { msg = \"nf_ct_dccp:<S2SV_blank>reserved<S2SV_blank>packet<S2SV_blank>type<S2SV_blank>\" ; goto out_invalid ; } return NF_ACCEPT ; out_invalid : if ( LOG_INVALID ( net , IPPROTO_DCCP ) ) nf_log_packet ( net , pf , 0 , skb , NULL , NULL , NULL , \"%s\" , msg ) ; return - NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) , & _dh <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-787 int mp_pack ( lua_State * L ) { int nargs = lua_gettop ( L ) ; int i ; mp_buf * buf ; if ( nargs == 0 ) return luaL_argerror ( L , 0 , \"MessagePack<S2SV_blank>pack<S2SV_blank>needs<S2SV_blank>input.\" ) ; if ( ! lua_checkstack ( L , nargs ) ) return luaL_argerror ( L , 0 , \"Too<S2SV_blank>many<S2SV_blank>arguments<S2SV_blank>for<S2SV_blank>MessagePack<S2SV_blank>pack.\" ) ; buf = mp_buf_new ( L ) ; for ( i = 1 ; i <= nargs ; i ++ ) { <S2SV_StartBug> lua_pushvalue ( L , i ) ; <S2SV_EndBug> mp_encode_lua_type ( L , buf , 0 ) ; lua_pushlstring ( L , ( char * ) buf -> b , buf -> len ) ; buf -> free += buf -> len ; buf -> len = 0 ; } mp_buf_free ( L , buf ) ; lua_concat ( L , nargs ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { luaL_checkstack ( L , 1 , \"in<S2SV_blank>function<S2SV_blank>mp_check\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1179\n\n```\nCWE-264 static inline int check_pmd_range ( struct vm_area_struct * vma , pud_t * pud , unsigned long addr , unsigned long end , const nodemask_t * nodes , unsigned long flags , void * private ) { pmd_t * pmd ; unsigned long next ; pmd = pmd_offset ( pud , addr ) ; do { next = pmd_addr_end ( addr , end ) ; split_huge_page_pmd ( vma -> vm_mm , pmd ) ; <S2SV_StartBug> if ( pmd_none_or_clear_bad ( pmd ) ) <S2SV_EndBug> continue ; if ( check_pte_range ( vma , pmd , addr , next , nodes , flags , private ) ) return - EIO ; } while ( pmd ++ , addr = next , addr != end ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( pmd_none_or_trans_huge_or_clear_bad <S2SV_ModEnd> ( pmd )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 static int __vcpu_run ( struct kvm_vcpu * vcpu ) { int r ; struct kvm * kvm = vcpu -> kvm ; vcpu -> srcu_idx = srcu_read_lock ( & kvm -> srcu ) ; <S2SV_StartBug> r = vapic_enter ( vcpu ) ; <S2SV_EndBug> if ( r ) { srcu_read_unlock ( & kvm -> srcu , vcpu -> srcu_idx ) ; return r ; } r = 1 ; while ( r > 0 ) { if ( vcpu -> arch . mp_state == KVM_MP_STATE_RUNNABLE && ! vcpu -> arch . apf . halted ) r = vcpu_enter_guest ( vcpu ) ; else { srcu_read_unlock ( & kvm -> srcu , vcpu -> srcu_idx ) ; kvm_vcpu_block ( vcpu ) ; vcpu -> srcu_idx = srcu_read_lock ( & kvm -> srcu ) ; if ( kvm_check_request ( KVM_REQ_UNHALT , vcpu ) ) { kvm_apic_accept_events ( vcpu ) ; switch ( vcpu -> arch . mp_state ) { case KVM_MP_STATE_HALTED : vcpu -> arch . pv . pv_unhalted = false ; vcpu -> arch . mp_state = KVM_MP_STATE_RUNNABLE ; case KVM_MP_STATE_RUNNABLE : vcpu -> arch . apf . halted = false ; break ; case KVM_MP_STATE_INIT_RECEIVED : break ; default : r = - EINTR ; break ; } } } if ( r <= 0 ) break ; clear_bit ( KVM_REQ_PENDING_TIMER , & vcpu -> requests ) ; if ( kvm_cpu_has_pending_timer ( vcpu ) ) kvm_inject_pending_timer_irqs ( vcpu ) ; if ( dm_request_for_irq_injection ( vcpu ) ) { r = - EINTR ; vcpu -> run -> exit_reason = KVM_EXIT_INTR ; ++ vcpu -> stat . request_irq_exits ; } kvm_check_async_pf_completion ( vcpu ) ; if ( signal_pending ( current ) ) { r = - EINTR ; vcpu -> run -> exit_reason = KVM_EXIT_INTR ; ++ vcpu -> stat . signal_exits ; } if ( need_resched ( ) ) { srcu_read_unlock ( & kvm -> srcu , vcpu -> srcu_idx ) ; kvm_resched ( vcpu ) ; vcpu -> srcu_idx = srcu_read_lock ( & kvm -> srcu ) ; } } srcu_read_unlock ( & kvm -> srcu , vcpu -> srcu_idx ) ; <S2SV_StartBug> vapic_exit ( vcpu ) ; <S2SV_EndBug> return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> srcu ) ; <S2SV_ModEnd> r = 1 <S2SV_ModStart> srcu_idx ) ; <S2SV_ModEnd> return r ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5355\n\n```\nCWE-20 static gboolean parse_toshiba_packet ( FILE_T fh , struct wtap_pkthdr * phdr , Buffer * buf , int * err , gchar * * err_info ) { union wtap_pseudo_header * pseudo_header = & phdr -> pseudo_header ; char line [ TOSHIBA_LINE_LENGTH ] ; int num_items_scanned ; <S2SV_StartBug> guint pkt_len ; <S2SV_EndBug> int pktnum , hr , min , sec , csec ; char channel [ 10 ] , direction [ 10 ] ; int i , hex_lines ; guint8 * pd ; if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } num_items_scanned = sscanf ( line , \"%9d]<S2SV_blank>%2d:%2d:%2d.%9d<S2SV_blank>%9s<S2SV_blank>%9s\" , & pktnum , & hr , & min , & sec , & csec , channel , direction ) ; if ( num_items_scanned != 7 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>record<S2SV_blank>header<S2SV_blank>isn\\'t<S2SV_blank>valid\" ) ; return FALSE ; } do { if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } line [ 16 ] = '\\\\0' ; } while ( strcmp ( line , \"OFFSET<S2SV_blank>0001-0203\" ) != 0 ) ; <S2SV_StartBug> num_items_scanned = sscanf ( line + 64 , \"LEN=%9u\" , & pkt_len ) ; <S2SV_EndBug> if ( num_items_scanned != 1 ) { * err = WTAP_ERR_BAD_FILE ; <S2SV_StartBug> * err_info = g_strdup ( \"toshiba:<S2SV_blank>OFFSET<S2SV_blank>line<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>valid<S2SV_blank>LEN<S2SV_blank>item\" ) ; <S2SV_EndBug> return FALSE ; } if ( pkt_len > WTAP_MAX_PACKET_SIZE ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup_printf ( \"toshiba:<S2SV_blank>File<S2SV_blank>has<S2SV_blank>%u-byte<S2SV_blank>packet,<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>maximum<S2SV_blank>of<S2SV_blank>%u\" , pkt_len , WTAP_MAX_PACKET_SIZE ) ; return FALSE ; } phdr -> rec_type = REC_TYPE_PACKET ; phdr -> presence_flags = WTAP_HAS_TS | WTAP_HAS_CAP_LEN ; phdr -> ts . secs = hr * 3600 + min * 60 + sec ; phdr -> ts . nsecs = csec * 10000000 ; phdr -> caplen = pkt_len ; phdr -> len = pkt_len ; switch ( channel [ 0 ] ) { case 'B' : phdr -> pkt_encap = WTAP_ENCAP_ISDN ; pseudo_header -> isdn . uton = ( direction [ 0 ] == 'T' ) ; pseudo_header -> isdn . channel = ( guint8 ) strtol ( & channel [ 1 ] , NULL , 10 ) ; break ; case 'D' : phdr -> pkt_encap = WTAP_ENCAP_ISDN ; pseudo_header -> isdn . uton = ( direction [ 0 ] == 'T' ) ; pseudo_header -> isdn . channel = 0 ; break ; default : phdr -> pkt_encap = WTAP_ENCAP_ETHERNET ; pseudo_header -> eth . fcs_len = - 1 ; break ; } ws_buffer_assure_space ( buf , pkt_len ) ; pd = ws_buffer_start_ptr ( buf ) ; hex_lines = pkt_len / 16 + ( ( pkt_len % 16 ) ? 1 : 0 ) ; for ( i = 0 ; i < hex_lines ; i ++ ) { if ( file_gets ( line , TOSHIBA_LINE_LENGTH , fh ) == NULL ) { * err = file_error ( fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } if ( ! parse_single_hex_dump_line ( line , pd , i * 16 ) ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>hex<S2SV_blank>dump<S2SV_blank>not<S2SV_blank>valid\" ) ; return FALSE ; } } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int num_items_scanned ; int pkt_len , <S2SV_ModEnd> pktnum , hr <S2SV_ModStart> + 64 , \"LEN=%9d\" <S2SV_ModEnd> , & pkt_len <S2SV_ModStart> g_strdup ( \"toshiba:<S2SV_blank>OFFSET<S2SV_blank>line<S2SV_blank>doesn\\'t<S2SV_blank>have<S2SV_blank>valid<S2SV_blank>LEN<S2SV_blank>item\" ) ; return FALSE ; } if ( pkt_len < 0 ) { * err = WTAP_ERR_BAD_FILE ; * err_info = g_strdup ( \"toshiba:<S2SV_blank>packet<S2SV_blank>header<S2SV_blank>has<S2SV_blank>a<S2SV_blank>negative<S2SV_blank>packet<S2SV_blank>length\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2847\n\n```\nCWE-399 static long pipe_set_size ( struct pipe_inode_info * pipe , unsigned long nr_pages ) { struct pipe_buffer * bufs ; if ( nr_pages < pipe -> nrbufs ) return - EBUSY ; bufs = kcalloc ( nr_pages , sizeof ( * bufs ) , GFP_KERNEL | __GFP_NOWARN ) ; if ( unlikely ( ! bufs ) ) return - ENOMEM ; if ( pipe -> nrbufs ) { unsigned int tail ; unsigned int head ; tail = pipe -> curbuf + pipe -> nrbufs ; if ( tail < pipe -> buffers ) tail = 0 ; else tail &= ( pipe -> buffers - 1 ) ; head = pipe -> nrbufs - tail ; if ( head ) memcpy ( bufs , pipe -> bufs + pipe -> curbuf , head * sizeof ( struct pipe_buffer ) ) ; if ( tail ) memcpy ( bufs + head , pipe -> bufs , tail * sizeof ( struct pipe_buffer ) ) ; } <S2SV_StartBug> pipe -> curbuf = 0 ; <S2SV_EndBug> kfree ( pipe -> bufs ) ; pipe -> bufs = bufs ; pipe -> buffers = nr_pages ; return nr_pages * PAGE_SIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } account_pipe_buffers ( pipe , pipe -> buffers , nr_pages ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4485\n\n```\nCWE-200 static void llc_cmsg_rcv ( struct msghdr * msg , struct sk_buff * skb ) { struct llc_sock * llc = llc_sk ( skb -> sk ) ; if ( llc -> cmsg_flags & LLC_CMSG_PKTINFO ) { <S2SV_StartBug> struct llc_pktinfo info ; <S2SV_EndBug> info . lpi_ifindex = llc_sk ( skb -> sk ) -> dev -> ifindex ; llc_pdu_decode_dsap ( skb , & info . lpi_sap ) ; llc_pdu_decode_da ( skb , info . lpi_mac ) ; put_cmsg ( msg , SOL_LLC , LLC_OPT_PKTINFO , sizeof ( info ) , & info ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct llc_pktinfo info ; memset ( & info , 0 , sizeof ( info ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6763\n\n```\nCWE-119 static int au1200fb_fb_mmap ( struct fb_info * info , struct vm_area_struct * vma ) { <S2SV_StartBug> unsigned int len ; <S2SV_EndBug> unsigned long start = 0 , off ; <S2SV_StartBug> struct au1200fb_device * fbdev = info -> par ; <S2SV_EndBug> if ( vma -> vm_pgoff > ( ~ 0UL >> PAGE_SHIFT ) ) { return - EINVAL ; } start = fbdev -> fb_phys & PAGE_MASK ; len = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + fbdev -> fb_len ) ; off = vma -> vm_pgoff << PAGE_SHIFT ; if ( ( vma -> vm_end - vma -> vm_start + off ) > len ) { return - EINVAL ; } off += start ; vma -> vm_pgoff = off >> PAGE_SHIFT ; vma -> vm_page_prot = pgprot_noncached ( vma -> vm_page_prot ) ; pgprot_val ( vma -> vm_page_prot ) |= _CACHE_MASK ; <S2SV_StartBug> return io_remap_pfn_range ( vma , vma -> vm_start , off >> PAGE_SHIFT , <S2SV_EndBug> vma -> vm_end - vma -> vm_start , vma -> vm_page_prot ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vma ) { <S2SV_ModEnd> struct au1200fb_device * <S2SV_ModStart> info -> par <S2SV_ModEnd> ; vma -> <S2SV_ModStart> _CACHE_MASK ; return vm_iomap_memory <S2SV_ModEnd> ( vma , <S2SV_ModStart> ( vma , fbdev -> fb_phys , fbdev -> fb_len <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2491\n\n```\nCWE-399 static void call_bind_status ( struct rpc_task * task ) { int status = - EIO ; if ( task -> tk_status >= 0 ) { dprint_status ( task ) ; task -> tk_status = 0 ; task -> tk_action = call_connect ; return ; } switch ( task -> tk_status ) { case - ENOMEM : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>rpcbind<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" , task -> tk_pid ) ; rpc_delay ( task , HZ >> 2 ) ; goto retry_timeout ; case - EACCES : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>remote<S2SV_blank>rpcbind:<S2SV_blank>RPC<S2SV_blank>program/version<S2SV_blank>\" \"unavailable\\\\n\" , task -> tk_pid ) ; if ( task -> tk_msg . rpc_proc -> p_proc == 0 ) { status = - EOPNOTSUPP ; break ; } <S2SV_StartBug> rpc_delay ( task , 3 * HZ ) ; <S2SV_EndBug> goto retry_timeout ; case - ETIMEDOUT : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>rpcbind<S2SV_blank>request<S2SV_blank>timed<S2SV_blank>out\\\\n\" , task -> tk_pid ) ; goto retry_timeout ; case - EPFNOSUPPORT : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>unrecognized<S2SV_blank>remote<S2SV_blank>rpcbind<S2SV_blank>service\\\\n\" , task -> tk_pid ) ; break ; case - EPROTONOSUPPORT : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>remote<S2SV_blank>rpcbind<S2SV_blank>version<S2SV_blank>unavailable,<S2SV_blank>retrying\\\\n\" , task -> tk_pid ) ; task -> tk_status = 0 ; task -> tk_action = call_bind ; return ; case - ECONNREFUSED : case - ECONNRESET : case - ENOTCONN : case - EHOSTDOWN : case - EHOSTUNREACH : case - ENETUNREACH : case - EPIPE : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>remote<S2SV_blank>rpcbind<S2SV_blank>unreachable:<S2SV_blank>%d\\\\n\" , task -> tk_pid , task -> tk_status ) ; if ( ! RPC_IS_SOFTCONN ( task ) ) { rpc_delay ( task , 5 * HZ ) ; goto retry_timeout ; } status = task -> tk_status ; break ; default : dprintk ( \"RPC:<S2SV_blank>%5u<S2SV_blank>unrecognized<S2SV_blank>rpcbind<S2SV_blank>error<S2SV_blank>(%d)\\\\n\" , task -> tk_pid , - task -> tk_status ) ; } rpc_exit ( task , status ) ; return ; retry_timeout : task -> tk_action = call_timeout ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } if ( task -> tk_rebind_retry == 0 ) break ; task -> tk_rebind_retry -- ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5489\n\n```\nCWE-200 static int mincore_pte_range ( pmd_t * pmd , unsigned long addr , unsigned long end , struct mm_walk * walk ) { spinlock_t * ptl ; struct vm_area_struct * vma = walk -> vma ; pte_t * ptep ; unsigned char * vec = walk -> private ; int nr = ( end - addr ) >> PAGE_SHIFT ; ptl = pmd_trans_huge_lock ( pmd , vma ) ; if ( ptl ) { memset ( vec , 1 , nr ) ; spin_unlock ( ptl ) ; goto out ; } if ( pmd_trans_unstable ( pmd ) ) { <S2SV_StartBug> __mincore_unmapped_range ( addr , end , vma , vec ) ; <S2SV_EndBug> goto out ; } ptep = pte_offset_map_lock ( walk -> mm , pmd , addr , & ptl ) ; for ( ; addr != end ; ptep ++ , addr += PAGE_SIZE ) { pte_t pte = * ptep ; if ( pte_none ( pte ) ) <S2SV_StartBug> __mincore_unmapped_range ( addr , addr + PAGE_SIZE , <S2SV_EndBug> vma , vec ) ; else if ( pte_present ( pte ) ) * vec = 1 ; else { swp_entry_t entry = pte_to_swp_entry ( pte ) ; <S2SV_StartBug> if ( non_swap_entry ( entry ) ) { <S2SV_EndBug> * vec = 1 ; } else { # ifdef CONFIG_SWAP * vec = mincore_page ( swap_address_space ( entry ) , swp_offset ( entry ) ) ; # else WARN_ON ( 1 ) ; * vec = 1 ; # endif } } vec ++ ; } pte_unmap_unlock ( ptep - 1 , ptl ) ; out : walk -> private += nr ; cond_resched ( ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { memset ( vec , 1 , nr <S2SV_ModEnd> ) ; goto <S2SV_ModStart> pte ) ) * vec = 0 <S2SV_ModEnd> ; else if <S2SV_ModStart> pte ) ; * vec = ! ! <S2SV_ModEnd> non_swap_entry ( entry <S2SV_ModStart> ( entry ) ; <S2SV_ModEnd> } vec ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 static int peer_recv_callback ( rdpTransport * transport , wStream * s , void * extra ) { freerdp_peer * client = ( freerdp_peer * ) extra ; rdpRdp * rdp = client -> context -> rdp ; switch ( rdp -> state ) { case CONNECTION_STATE_INITIAL : if ( ! rdp_server_accept_nego ( rdp , s ) ) return - 1 ; if ( rdp -> nego -> selected_protocol & PROTOCOL_NLA ) { sspi_CopyAuthIdentity ( & client -> identity , & ( rdp -> nego -> transport -> credssp -> identity ) ) ; IFCALLRET ( client -> Logon , client -> authenticated , client , & client -> identity , TRUE ) ; credssp_free ( rdp -> nego -> transport -> credssp ) ; <S2SV_StartBug> } <S2SV_EndBug> else { IFCALLRET ( client -> Logon , client -> authenticated , client , & client -> identity , FALSE ) ; } break ; case CONNECTION_STATE_NEGO : if ( ! rdp_server_accept_mcs_connect_initial ( rdp , s ) ) return - 1 ; break ; case CONNECTION_STATE_MCS_CONNECT : if ( ! rdp_server_accept_mcs_erect_domain_request ( rdp , s ) ) return - 1 ; break ; case CONNECTION_STATE_MCS_ERECT_DOMAIN : if ( ! rdp_server_accept_mcs_attach_user_request ( rdp , s ) ) return - 1 ; break ; case CONNECTION_STATE_MCS_ATTACH_USER : if ( ! rdp_server_accept_mcs_channel_join_request ( rdp , s ) ) return - 1 ; break ; case CONNECTION_STATE_MCS_CHANNEL_JOIN : if ( rdp -> settings -> DisableEncryption ) { if ( ! rdp_server_accept_client_keys ( rdp , s ) ) return - 1 ; break ; } rdp -> state = CONNECTION_STATE_ESTABLISH_KEYS ; case CONNECTION_STATE_ESTABLISH_KEYS : if ( ! rdp_server_accept_client_info ( rdp , s ) ) return - 1 ; IFCALL ( client -> Capabilities , client ) ; if ( ! rdp_send_demand_active ( rdp ) ) return - 1 ; break ; case CONNECTION_STATE_LICENSE : if ( ! rdp_server_accept_confirm_active ( rdp , s ) ) { Stream_SetPosition ( s , 0 ) ; return peer_recv_pdu ( client , s ) ; } break ; case CONNECTION_STATE_ACTIVE : if ( peer_recv_pdu ( client , s ) < 0 ) return - 1 ; break ; default : fprintf ( stderr , \"Invalid<S2SV_blank>state<S2SV_blank>%d\\\\n\" , rdp -> state ) ; return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> credssp ) ; rdp -> nego -> transport -> credssp = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8026\n\n```\nCWE-119 int exfat_mount ( struct exfat * ef , const char * spec , const char * options ) { int rc ; enum exfat_mode mode ; exfat_tzset ( ) ; memset ( ef , 0 , sizeof ( struct exfat ) ) ; parse_options ( ef , options ) ; if ( match_option ( options , \"ro\" ) ) mode = EXFAT_MODE_RO ; else if ( match_option ( options , \"ro_fallback\" ) ) mode = EXFAT_MODE_ANY ; else mode = EXFAT_MODE_RW ; ef -> dev = exfat_open ( spec , mode ) ; if ( ef -> dev == NULL ) return - EIO ; if ( exfat_get_mode ( ef -> dev ) == EXFAT_MODE_RO ) { if ( mode == EXFAT_MODE_ANY ) ef -> ro = - 1 ; else ef -> ro = 1 ; } ef -> sb = malloc ( sizeof ( struct exfat_super_block ) ) ; if ( ef -> sb == NULL ) { exfat_close ( ef -> dev ) ; exfat_error ( \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>the<S2SV_blank>super<S2SV_blank>block\" ) ; return - ENOMEM ; } memset ( ef -> sb , 0 , sizeof ( struct exfat_super_block ) ) ; if ( exfat_pread ( ef -> dev , ef -> sb , sizeof ( struct exfat_super_block ) , 0 ) < 0 ) { exfat_close ( ef -> dev ) ; free ( ef -> sb ) ; exfat_error ( \"failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>boot<S2SV_blank>sector\" ) ; return - EIO ; } if ( memcmp ( ef -> sb -> oem_name , \"EXFAT<S2SV_blank><S2SV_blank><S2SV_blank>\" , 8 ) != 0 ) { exfat_close ( ef -> dev ) ; free ( ef -> sb ) ; <S2SV_StartBug> exfat_error ( \"exFAT<S2SV_blank>file<S2SV_blank>system<S2SV_blank>is<S2SV_blank>not<S2SV_blank>found\" ) ; <S2SV_EndBug> return - EIO ; } ef -> zero_cluster = malloc ( CLUSTER_SIZE ( * ef -> sb ) ) ; if ( ef -> zero_cluster == NULL ) { exfat_close ( ef -> dev ) ; free ( ef -> sb ) ; exfat_error ( \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>zero<S2SV_blank>sector\" ) ; return - ENOMEM ; } if ( ! verify_vbr_checksum ( ef -> dev , ef -> zero_cluster , SECTOR_SIZE ( * ef -> sb ) ) ) { free ( ef -> zero_cluster ) ; exfat_close ( ef -> dev ) ; free ( ef -> sb ) ; return - EIO ; } memset ( ef -> zero_cluster , 0 , CLUSTER_SIZE ( * ef -> sb ) ) ; if ( ef -> sb -> version . major != 1 || ef -> sb -> version . minor != 0 ) { free ( ef -> zero_cluster ) ; exfat_close ( ef -> dev ) ; exfat_error ( \"unsupported<S2SV_blank>exFAT<S2SV_blank>version:<S2SV_blank>%hhu.%hhu\" , ef -> sb -> version . major , ef -> sb -> version . minor ) ; free ( ef -> sb ) ; return - EIO ; } if ( ef -> sb -> fat_count != 1 ) { free ( ef -> zero_cluster ) ; exfat_close ( ef -> dev ) ; exfat_error ( \"unsupported<S2SV_blank>FAT<S2SV_blank>count:<S2SV_blank>%hhu\" , ef -> sb -> fat_count ) ; free ( ef -> sb ) ; return - EIO ; } <S2SV_StartBug> if ( ( int ) ef -> sb -> sector_bits + ( int ) ef -> sb -> spc_bits > 25 ) <S2SV_EndBug> { free ( ef -> zero_cluster ) ; exfat_close ( ef -> dev ) ; exfat_error ( \"too<S2SV_blank>big<S2SV_blank>cluster<S2SV_blank>size:<S2SV_blank>2^%d\" , ( int ) ef -> sb -> sector_bits + ( int ) ef -> sb -> spc_bits ) ; free ( ef -> sb ) ; return - EIO ; } if ( le64_to_cpu ( ef -> sb -> sector_count ) * SECTOR_SIZE ( * ef -> sb ) > exfat_get_size ( ef -> dev ) ) { exfat_warn ( \"file<S2SV_blank>system<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>underlying<S2SV_blank>device:<S2SV_blank>\" \"%\" PRIu64 \"<S2SV_blank>><S2SV_blank>%\" PRIu64 , le64_to_cpu ( ef -> sb -> sector_count ) * SECTOR_SIZE ( * ef -> sb ) , exfat_get_size ( ef -> dev ) ) ; } ef -> root = malloc ( sizeof ( struct exfat_node ) ) ; if ( ef -> root == NULL ) { free ( ef -> zero_cluster ) ; exfat_close ( ef -> dev ) ; free ( ef -> sb ) ; exfat_error ( \"failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>root<S2SV_blank>node\" ) ; return - ENOMEM ; } memset ( ef -> root , 0 , sizeof ( struct exfat_node ) ) ; ef -> root -> flags = EXFAT_ATTRIB_DIR ; ef -> root -> start_cluster = le32_to_cpu ( ef -> sb -> rootdir_cluster ) ; ef -> root -> fptr_cluster = ef -> root -> start_cluster ; ef -> root -> name [ 0 ] = cpu_to_le16 ( '\\\\0' ) ; ef -> root -> size = rootdir_size ( ef ) ; if ( ef -> root -> size == 0 ) { free ( ef -> root ) ; free ( ef -> zero_cluster ) ; exfat_close ( ef -> dev ) ; free ( ef -> sb ) ; return - EIO ; } ef -> root -> mtime = 0 ; ef -> root -> atime = 0 ; exfat_get_node ( ef -> root ) ; rc = exfat_cache_directory ( ef , ef -> root ) ; if ( rc != 0 ) goto error ; if ( ef -> upcase == NULL ) { exfat_error ( \"upcase<S2SV_blank>table<S2SV_blank>is<S2SV_blank>not<S2SV_blank>found\" ) ; goto error ; } if ( ef -> cmap . chunk == NULL ) { exfat_error ( \"clusters<S2SV_blank>bitmap<S2SV_blank>is<S2SV_blank>not<S2SV_blank>found\" ) ; goto error ; } if ( prepare_super_block ( ef ) != 0 ) goto error ; return 0 ; error : exfat_put_node ( ef , ef -> root ) ; exfat_reset_cache ( ef ) ; free ( ef -> root ) ; free ( ef -> zero_cluster ) ; exfat_close ( ef -> dev ) ; free ( ef -> sb ) ; return - EIO ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exfat_error ( \"exFAT<S2SV_blank>file<S2SV_blank>system<S2SV_blank>is<S2SV_blank>not<S2SV_blank>found\" ) ; return - EIO ; } if ( ef -> sb -> sector_bits < 9 ) { exfat_close ( ef -> dev ) ; exfat_error ( \"too<S2SV_blank>small<S2SV_blank>sector<S2SV_blank>size:<S2SV_blank>2^%hhd\" , ef -> sb -> sector_bits ) ; free ( ef -> sb ) ; return - EIO ; } if ( ( int ) ef -> sb -> sector_bits + ( int ) ef -> sb -> spc_bits > 25 ) { exfat_close ( ef -> dev ) ; exfat_error ( \"too<S2SV_blank>big<S2SV_blank>cluster<S2SV_blank>size:<S2SV_blank>2^(%hhd+%hhd)\" , ef -> sb -> sector_bits , ef -> sb -> spc_bits ) ; free ( ef -> sb <S2SV_ModStart> } if ( <S2SV_ModEnd> le64_to_cpu ( ef\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1588\n\n```\nCWE-134 static void thunar_transfer_job_copy_node ( ThunarTransferJob * job , ThunarTransferNode * node , GFile * target_file , GFile * target_parent_file , GList * * target_file_list_return , GError * * error ) { ThunarThumbnailCache * thumbnail_cache ; ThunarApplication * application ; ThunarJobResponse response ; GFileInfo * info ; GError * err = NULL ; GFile * real_target_file = NULL ; gchar * base_name ; _thunar_return_if_fail ( THUNAR_IS_TRANSFER_JOB ( job ) ) ; _thunar_return_if_fail ( node != NULL && G_IS_FILE ( node -> source_file ) ) ; _thunar_return_if_fail ( target_file == NULL || node -> next == NULL ) ; _thunar_return_if_fail ( ( target_file == NULL && target_parent_file != NULL ) || ( target_file != NULL && target_parent_file == NULL ) ) ; _thunar_return_if_fail ( error == NULL || * error == NULL ) ; application = thunar_application_get ( ) ; thumbnail_cache = thunar_application_get_thumbnail_cache ( application ) ; g_object_unref ( application ) ; for ( ; err == NULL && node != NULL ; node = node -> next ) { if ( G_LIKELY ( target_file == NULL ) ) { base_name = g_file_get_basename ( node -> source_file ) ; target_file = g_file_get_child ( target_parent_file , base_name ) ; g_free ( base_name ) ; } else target_file = g_object_ref ( target_file ) ; info = g_file_query_info ( node -> source_file , G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME , G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS , exo_job_get_cancellable ( EXO_JOB ( job ) ) , & err ) ; if ( info == NULL ) { g_object_unref ( target_file ) ; break ; } <S2SV_StartBug> exo_job_info_message ( EXO_JOB ( job ) , g_file_info_get_display_name ( info ) ) ; <S2SV_EndBug> retry_copy : real_target_file = thunar_transfer_job_copy_file ( job , node -> source_file , target_file , & err ) ; if ( G_LIKELY ( real_target_file != NULL ) ) { if ( G_LIKELY ( node -> source_file != real_target_file ) ) { thunar_thumbnail_cache_copy_file ( thumbnail_cache , node -> source_file , real_target_file ) ; if ( node -> children != NULL ) { thunar_transfer_job_copy_node ( job , node -> children , NULL , real_target_file , NULL , & err ) ; thunar_transfer_node_free ( node -> children ) ; node -> children = NULL ; } if ( G_UNLIKELY ( err != NULL ) ) { g_object_unref ( real_target_file ) ; g_object_unref ( target_file ) ; break ; } if ( G_LIKELY ( target_file_list_return != NULL ) ) { * target_file_list_return = thunar_g_file_list_prepend ( * target_file_list_return , real_target_file ) ; } retry_remove : if ( job -> type == THUNAR_TRANSFER_JOB_MOVE ) { if ( g_file_delete ( node -> source_file , exo_job_get_cancellable ( EXO_JOB ( job ) ) , & err ) ) { thunar_thumbnail_cache_delete_file ( thumbnail_cache , node -> source_file ) ; } else { response = thunar_job_ask_skip ( THUNAR_JOB ( job ) , \"%s\" , err -> message ) ; g_clear_error ( & err ) ; if ( G_UNLIKELY ( response == THUNAR_JOB_RESPONSE_RETRY ) ) goto retry_remove ; } } } g_object_unref ( real_target_file ) ; } else if ( err != NULL ) { if ( err -> domain != G_IO_ERROR || err -> code != G_IO_ERROR_NO_SPACE ) { response = thunar_job_ask_skip ( THUNAR_JOB ( job ) , \"%s\" , err -> message ) ; g_clear_error ( & err ) ; if ( G_UNLIKELY ( response == THUNAR_JOB_RESPONSE_RETRY ) ) goto retry_copy ; } } g_object_unref ( target_file ) ; target_file = NULL ; g_object_unref ( info ) ; } g_object_unref ( thumbnail_cache ) ; if ( G_UNLIKELY ( err != NULL ) ) g_propagate_error ( error , err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> job ) , \"%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7026\n\n```\nCWE-362 SYSCALL_DEFINE3 ( shmctl , int , shmid , int , cmd , struct shmid_ds __user * , buf ) { struct shmid_kernel * shp ; int err , version ; struct ipc_namespace * ns ; if ( cmd < 0 || shmid < 0 ) return - EINVAL ; version = ipc_parse_version ( & cmd ) ; ns = current -> nsproxy -> ipc_ns ; switch ( cmd ) { case IPC_INFO : case SHM_INFO : case SHM_STAT : case IPC_STAT : return shmctl_nolock ( ns , shmid , cmd , version , buf ) ; case IPC_RMID : case IPC_SET : return shmctl_down ( ns , shmid , cmd , buf , version ) ; case SHM_LOCK : case SHM_UNLOCK : { struct file * shm_file ; rcu_read_lock ( ) ; shp = shm_obtain_object_check ( ns , shmid ) ; if ( IS_ERR ( shp ) ) { err = PTR_ERR ( shp ) ; goto out_unlock1 ; } audit_ipc_obj ( & ( shp -> shm_perm ) ) ; err = security_shm_shmctl ( shp , cmd ) ; if ( err ) goto out_unlock1 ; ipc_lock_object ( & shp -> shm_perm ) ; if ( ! ns_capable ( ns -> user_ns , CAP_IPC_LOCK ) ) { kuid_t euid = current_euid ( ) ; err = - EPERM ; if ( ! uid_eq ( euid , shp -> shm_perm . uid ) && ! uid_eq ( euid , shp -> shm_perm . cuid ) ) goto out_unlock0 ; if ( cmd == SHM_LOCK && ! rlimit ( RLIMIT_MEMLOCK ) ) goto out_unlock0 ; } shm_file = shp -> shm_file ; <S2SV_StartBug> if ( is_file_hugepages ( shm_file ) ) <S2SV_EndBug> goto out_unlock0 ; if ( cmd == SHM_LOCK ) { struct user_struct * user = current_user ( ) ; err = shmem_lock ( shm_file , 1 , user ) ; if ( ! err && ! ( shp -> shm_perm . mode & SHM_LOCKED ) ) { shp -> shm_perm . mode |= SHM_LOCKED ; shp -> mlock_user = user ; } goto out_unlock0 ; } if ( ! ( shp -> shm_perm . mode & SHM_LOCKED ) ) goto out_unlock0 ; shmem_lock ( shm_file , 0 , shp -> mlock_user ) ; shp -> shm_perm . mode &= ~ SHM_LOCKED ; shp -> mlock_user = NULL ; get_file ( shm_file ) ; ipc_unlock_object ( & shp -> shm_perm ) ; rcu_read_unlock ( ) ; shmem_unlock_mapping ( shm_file -> f_mapping ) ; fput ( shm_file ) ; return err ; } default : return - EINVAL ; } out_unlock0 : ipc_unlock_object ( & shp -> shm_perm ) ; out_unlock1 : rcu_read_unlock ( ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( shm_file == NULL ) { err = - EIDRM ; goto out_unlock0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-000 void macvlan_common_setup ( struct net_device * dev ) { ether_setup ( dev ) ; <S2SV_StartBug> dev -> priv_flags &= ~ IFF_XMIT_DST_RELEASE ; <S2SV_EndBug> dev -> netdev_ops = & macvlan_netdev_ops ; dev -> destructor = free_netdev ; dev -> header_ops = & macvlan_hard_header_ops , dev -> ethtool_ops = & macvlan_ethtool_ops ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> priv_flags &= ~ ( IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING ) <S2SV_ModEnd> ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1445\n\n```\nCWE-399 static int wanxl_ioctl ( struct net_device * dev , struct ifreq * ifr , int cmd ) { const size_t size = sizeof ( sync_serial_settings ) ; sync_serial_settings line ; port_t * port = dev_to_port ( dev ) ; if ( cmd != SIOCWANDEV ) return hdlc_ioctl ( dev , ifr , cmd ) ; switch ( ifr -> ifr_settings . type ) { case IF_GET_IFACE : ifr -> ifr_settings . type = IF_IFACE_SYNC_SERIAL ; if ( ifr -> ifr_settings . size < size ) { ifr -> ifr_settings . size = size ; return - ENOBUFS ; <S2SV_StartBug> } <S2SV_EndBug> line . clock_type = get_status ( port ) -> clocking ; line . clock_rate = 0 ; line . loopback = 0 ; if ( copy_to_user ( ifr -> ifr_settings . ifs_ifsu . sync , & line , size ) ) return - EFAULT ; return 0 ; case IF_IFACE_SYNC_SERIAL : if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; if ( dev -> flags & IFF_UP ) return - EBUSY ; if ( copy_from_user ( & line , ifr -> ifr_settings . ifs_ifsu . sync , size ) ) return - EFAULT ; if ( line . clock_type != CLOCK_EXT && line . clock_type != CLOCK_TXFROMRX ) return - EINVAL ; if ( line . loopback != 0 ) return - EINVAL ; get_status ( port ) -> clocking = line . clock_type ; return 0 ; default : return hdlc_ioctl ( dev , ifr , cmd ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ENOBUFS ; } memset ( & line , 0 , sizeof ( line ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13040\n\n```\nCWE-125 static int mp_join_print ( netdissect_options * ndo , const u_char * opt , u_int opt_len , u_char flags ) { const struct mp_join * mpj = ( const struct mp_join * ) opt ; <S2SV_StartBug> if ( ! ( opt_len == 12 && flags & TH_SYN ) && <S2SV_EndBug> ! ( opt_len == 16 && ( flags & ( TH_SYN | TH_ACK ) ) == ( TH_SYN | TH_ACK ) ) && <S2SV_StartBug> ! ( opt_len == 24 && flags & TH_ACK ) ) <S2SV_EndBug> return 0 ; if ( opt_len != 24 ) { if ( mpj -> sub_b & MP_JOIN_B ) ND_PRINT ( ( ndo , \"<S2SV_blank>backup\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>id<S2SV_blank>%u\" , mpj -> addr_id ) ) ; } switch ( opt_len ) { case 12 : ND_PRINT ( ( ndo , \"<S2SV_blank>token<S2SV_blank>0x%x\" \"<S2SV_blank>nonce<S2SV_blank>0x%x\" , EXTRACT_32BITS ( mpj -> u . syn . token ) , EXTRACT_32BITS ( mpj -> u . syn . nonce ) ) ) ; break ; case 16 : ND_PRINT ( ( ndo , \"<S2SV_blank>hmac<S2SV_blank>0x%\" PRIx64 \"<S2SV_blank>nonce<S2SV_blank>0x%x\" , EXTRACT_64BITS ( mpj -> u . synack . mac ) , EXTRACT_32BITS ( mpj -> u . synack . nonce ) ) ) ; break ; case 24 : { size_t i ; ND_PRINT ( ( ndo , \"<S2SV_blank>hmac<S2SV_blank>0x\" ) ) ; for ( i = 0 ; i < sizeof ( mpj -> u . ack . mac ) ; ++ i ) ND_PRINT ( ( ndo , \"%02x\" , mpj -> u . ack . mac [ i ] ) ) ; } default : break ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 12 && ( <S2SV_ModStart> & TH_SYN ) ) <S2SV_ModStart> == 24 && ( <S2SV_ModStart> flags & TH_ACK )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15476\n\n```\nCWE-125 void ndpi_search_oracle ( struct ndpi_detection_module_struct * ndpi_struct , struct ndpi_flow_struct * flow ) { struct ndpi_packet_struct * packet = & flow -> packet ; u_int16_t dport = 0 , sport = 0 ; NDPI_LOG_DBG ( ndpi_struct , \"search<S2SV_blank>ORACLE\\\\n\" ) ; if ( packet -> tcp != NULL ) { sport = ntohs ( packet -> tcp -> source ) , dport = ntohs ( packet -> tcp -> dest ) ; NDPI_LOG_DBG2 ( ndpi_struct , \"calculating<S2SV_blank>ORACLE<S2SV_blank>over<S2SV_blank>tcp\\\\n\" ) ; if ( ( dport == 1521 || sport == 1521 ) <S2SV_StartBug> && ( ( ( packet -> payload [ 0 ] == 0x07 ) && ( packet -> payload [ 1 ] == 0xff ) && ( packet -> payload [ 2 ] == 0x00 ) ) <S2SV_EndBug> || ( ( packet -> payload_packet_len >= 232 ) && ( ( packet -> payload [ 0 ] == 0x00 ) || ( packet -> payload [ 0 ] == 0x01 ) ) && ( packet -> payload [ 1 ] != 0x00 ) && ( packet -> payload [ 2 ] == 0x00 ) && ( packet -> payload [ 3 ] == 0x00 ) ) ) ) { NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>oracle\\\\n\" ) ; ndpi_int_oracle_add_connection ( ndpi_struct , flow ) ; } else if ( packet -> payload_packet_len == 213 && packet -> payload [ 0 ] == 0x00 && packet -> payload [ 1 ] == 0xd5 && packet -> payload [ 2 ] == 0x00 && packet -> payload [ 3 ] == 0x00 ) { NDPI_LOG_INFO ( ndpi_struct , \"found<S2SV_blank>oracle\\\\n\" ) ; ndpi_int_oracle_add_connection ( ndpi_struct , flow ) ; } } else { NDPI_EXCLUDE_PROTO ( ndpi_struct , flow ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( packet -> payload_packet_len >= 3 && packet ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 int mp4client_main ( int argc , char * * argv ) { char c ; const char * str ; int ret_val = 0 ; u32 i , times [ 100 ] , nb_times , dump_mode ; u32 simulation_time_in_ms = 0 ; u32 initial_service_id = 0 ; Bool auto_exit = GF_FALSE ; Bool logs_set = GF_FALSE ; Bool start_fs = GF_FALSE ; Bool use_rtix = GF_FALSE ; Bool pause_at_first = GF_FALSE ; Bool no_cfg_save = GF_FALSE ; Bool is_cfg_only = GF_FALSE ; Double play_from = 0 ; # ifdef GPAC_MEMORY_TRACKING GF_MemTrackerType mem_track = GF_MemTrackerNone ; # endif Double fps = GF_IMPORT_DEFAULT_FPS ; Bool fill_ar , visible , do_uncache , has_command ; char * url_arg , * out_arg , * the_cfg , * rti_file , * views , * mosaic ; FILE * logfile = NULL ; Float scale = 1 ; # ifndef WIN32 dlopen ( NULL , RTLD_NOW | RTLD_GLOBAL ) ; # endif strcpy ( the_url , \".\" ) ; memset ( & user , 0 , sizeof ( GF_User ) ) ; dump_mode = DUMP_NONE ; fill_ar = visible = do_uncache = has_command = GF_FALSE ; url_arg = out_arg = the_cfg = rti_file = views = mosaic = NULL ; nb_times = 0 ; times [ 0 ] = 0 ; for ( i = 1 ; i < ( u32 ) argc ; i ++ ) { char * arg = argv [ i ] ; if ( ! strcmp ( arg , \"-c\" ) || ! strcmp ( arg , \"-cfg\" ) ) { the_cfg = argv [ i + 1 ] ; i ++ ; } else if ( ! strcmp ( arg , \"-mem-track\" ) || ! strcmp ( arg , \"-mem-track-stack\" ) ) { # ifdef GPAC_MEMORY_TRACKING mem_track = ! strcmp ( arg , \"-mem-track-stack\" ) ? GF_MemTrackerBackTrace : GF_MemTrackerSimple ; # else fprintf ( stderr , \"WARNING<S2SV_blank>-<S2SV_blank>GPAC<S2SV_blank>not<S2SV_blank>compiled<S2SV_blank>with<S2SV_blank>Memory<S2SV_blank>Tracker<S2SV_blank>-<S2SV_blank>ignoring<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , arg ) ; # endif } else if ( ! strcmp ( arg , \"-gui\" ) ) { gui_mode = 1 ; } else if ( ! strcmp ( arg , \"-guid\" ) ) { gui_mode = 2 ; } else if ( ! strcmp ( arg , \"-h\" ) || ! strcmp ( arg , \"-help\" ) ) { PrintUsage ( ) ; return 0 ; } } # ifdef GPAC_MEMORY_TRACKING gf_sys_init ( mem_track ) ; # else gf_sys_init ( GF_MemTrackerNone ) ; # endif gf_sys_set_args ( argc , ( const char * * ) argv ) ; cfg_file = gf_cfg_init ( the_cfg , NULL ) ; if ( ! cfg_file ) { fprintf ( stderr , \"Error:<S2SV_blank>Configuration<S2SV_blank>File<S2SV_blank>not<S2SV_blank>found\\\\n\" ) ; return 1 ; } if ( gf_log_set_tools_levels ( gf_cfg_get_key ( cfg_file , \"General\" , \"Logs\" ) ) != GF_OK ) { return 1 ; } if ( gf_cfg_get_key ( cfg_file , \"General\" , \"Logs\" ) != NULL ) { logs_set = GF_TRUE ; } if ( ! gui_mode ) { str = gf_cfg_get_key ( cfg_file , \"General\" , \"ForceGUI\" ) ; if ( str && ! strcmp ( str , \"yes\" ) ) gui_mode = 1 ; } for ( i = 1 ; i < ( u32 ) argc ; i ++ ) { char * arg = argv [ i ] ; if ( ! strcmp ( arg , \"-rti\" ) ) { rti_file = argv [ i + 1 ] ; i ++ ; } else if ( ! strcmp ( arg , \"-rtix\" ) ) { rti_file = argv [ i + 1 ] ; i ++ ; use_rtix = GF_TRUE ; } else if ( ! stricmp ( arg , \"-size\" ) ) { if ( sscanf ( argv [ i + 1 ] , \"%dx%d\" , & forced_width , & forced_height ) != 2 ) { forced_width = forced_height = 0 ; } i ++ ; } else if ( ! strcmp ( arg , \"-quiet\" ) ) { be_quiet = 1 ; } else if ( ! strcmp ( arg , \"-strict-error\" ) ) { gf_log_set_strict_error ( 1 ) ; } else if ( ! strcmp ( arg , \"-log-file\" ) || ! strcmp ( arg , \"-lf\" ) ) { logfile = gf_fopen ( argv [ i + 1 ] , \"wt\" ) ; gf_log_set_callback ( logfile , on_gpac_log ) ; i ++ ; } else if ( ! strcmp ( arg , \"-logs\" ) ) { if ( gf_log_set_tools_levels ( argv [ i + 1 ] ) != GF_OK ) { return 1 ; } logs_set = GF_TRUE ; i ++ ; } else if ( ! strcmp ( arg , \"-log-clock\" ) || ! strcmp ( arg , \"-lc\" ) ) { log_time_start = 1 ; } else if ( ! strcmp ( arg , \"-log-utc\" ) || ! strcmp ( arg , \"-lu\" ) ) { log_utc_time = 1 ; } # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) else if ( ! strcmp ( arg , \"-thread\" ) ) threading_flags = 0 ; # else else if ( ! strcmp ( arg , \"-no-thread\" ) ) threading_flags = GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD | GF_TERM_WINDOW_NO_THREAD ; # endif else if ( ! strcmp ( arg , \"-no-cthread\" ) || ! strcmp ( arg , \"-no-compositor-thread\" ) ) threading_flags |= GF_TERM_NO_COMPOSITOR_THREAD ; else if ( ! strcmp ( arg , \"-no-audio\" ) ) no_audio = 1 ; else if ( ! strcmp ( arg , \"-no-regulation\" ) ) no_regulation = 1 ; else if ( ! strcmp ( arg , \"-fs\" ) ) start_fs = 1 ; else if ( ! strcmp ( arg , \"-opt\" ) ) { set_cfg_option ( argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-conf\" ) ) { set_cfg_option ( argv [ i + 1 ] ) ; is_cfg_only = GF_TRUE ; i ++ ; } else if ( ! strcmp ( arg , \"-ifce\" ) ) { gf_cfg_set_key ( cfg_file , \"Network\" , \"DefaultMCastInterface\" , argv [ i + 1 ] ) ; i ++ ; } else if ( ! stricmp ( arg , \"-help\" ) ) { PrintUsage ( ) ; return 1 ; } else if ( ! stricmp ( arg , \"-noprog\" ) ) { no_prog = 1 ; gf_set_progress_callback ( NULL , progress_quiet ) ; } else if ( ! stricmp ( arg , \"-no-save\" ) || ! stricmp ( arg , \"--no-save\" ) ) { no_cfg_save = 1 ; } else if ( ! stricmp ( arg , \"-ntp-shift\" ) ) { s32 shift = atoi ( argv [ i + 1 ] ) ; i ++ ; gf_net_set_ntp_shift ( shift ) ; } else if ( ! stricmp ( arg , \"-run-for\" ) ) { simulation_time_in_ms = atoi ( argv [ i + 1 ] ) * 1000 ; if ( ! simulation_time_in_ms ) simulation_time_in_ms = 1 ; i ++ ; } else if ( ! strcmp ( arg , \"-out\" ) ) { out_arg = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-fps\" ) ) { fps = atof ( argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-avi\" ) || ! strcmp ( arg , \"-sha\" ) ) { dump_mode &= 0xFFFF0000 ; if ( ! strcmp ( arg , \"-sha\" ) ) dump_mode |= DUMP_SHA1 ; else dump_mode |= DUMP_AVI ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) { if ( ! strcmp ( arg , \"-avi\" ) && ( nb_times != 2 ) ) { fprintf ( stderr , \"Only<S2SV_blank>one<S2SV_blank>time<S2SV_blank>arg<S2SV_blank>found<S2SV_blank>for<S2SV_blank>-avi<S2SV_blank>-<S2SV_blank>check<S2SV_blank>usage\\\\n\" ) ; return 1 ; } i ++ ; } } else if ( ! strcmp ( arg , \"-rgbds\" ) ) { dump_mode |= DUMP_RGB_DEPTH_SHAPE ; } else if ( ! strcmp ( arg , \"-rgbd\" ) ) { dump_mode |= DUMP_RGB_DEPTH ; } else if ( ! strcmp ( arg , \"-depth\" ) ) { dump_mode |= DUMP_DEPTH_ONLY ; } else if ( ! strcmp ( arg , \"-bmp\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_BMP ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! strcmp ( arg , \"-png\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_PNG ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! strcmp ( arg , \"-raw\" ) ) { dump_mode &= 0xFFFF0000 ; dump_mode |= DUMP_RAW ; if ( ( url_arg || ( i + 2 < ( u32 ) argc ) ) && get_time_list ( argv [ i + 1 ] , times , & nb_times ) ) i ++ ; } else if ( ! stricmp ( arg , \"-scale\" ) ) { sscanf ( argv [ i + 1 ] , \"%f\" , & scale ) ; i ++ ; } else if ( ! strcmp ( arg , \"-c\" ) || ! strcmp ( arg , \"-cfg\" ) ) { i ++ ; } if ( ! gui_mode ) { if ( arg [ 0 ] != '-' ) { if ( url_arg ) { fprintf ( stderr , \"Several<S2SV_blank>input<S2SV_blank>URLs<S2SV_blank>provided<S2SV_blank>(\\\\\"%s\\\\\",<S2SV_blank>\\\\\"%s\\\\\").<S2SV_blank>Check<S2SV_blank>your<S2SV_blank>command-line.\\\\n\" , url_arg , arg ) ; return 1 ; } url_arg = arg ; } else if ( ! strcmp ( arg , \"-loop\" ) ) loop_at_end = 1 ; else if ( ! strcmp ( arg , \"-bench\" ) ) bench_mode = 1 ; else if ( ! strcmp ( arg , \"-vbench\" ) ) bench_mode = 2 ; else if ( ! strcmp ( arg , \"-sbench\" ) ) bench_mode = 3 ; else if ( ! strcmp ( arg , \"-no-addon\" ) ) enable_add_ons = GF_FALSE ; else if ( ! strcmp ( arg , \"-pause\" ) ) pause_at_first = 1 ; else if ( ! strcmp ( arg , \"-play-from\" ) ) { play_from = atof ( ( const char * ) argv [ i + 1 ] ) ; i ++ ; } else if ( ! strcmp ( arg , \"-speed\" ) ) { playback_speed = FLT2FIX ( atof ( ( const char * ) argv [ i + 1 ] ) ) ; if ( playback_speed <= 0 ) playback_speed = FIX_ONE ; i ++ ; } else if ( ! strcmp ( arg , \"-no-wnd\" ) ) user . init_flags |= GF_TERM_WINDOWLESS ; else if ( ! strcmp ( arg , \"-no-back\" ) ) user . init_flags |= GF_TERM_WINDOW_TRANSPARENT ; else if ( ! strcmp ( arg , \"-align\" ) ) { if ( argv [ i + 1 ] [ 0 ] == 'm' ) align_mode = 1 ; else if ( argv [ i + 1 ] [ 0 ] == 'b' ) align_mode = 2 ; align_mode <<= 8 ; if ( argv [ i + 1 ] [ 1 ] == 'm' ) align_mode |= 1 ; else if ( argv [ i + 1 ] [ 1 ] == 'r' ) align_mode |= 2 ; i ++ ; } else if ( ! strcmp ( arg , \"-fill\" ) ) { fill_ar = GF_TRUE ; } else if ( ! strcmp ( arg , \"-show\" ) ) { visible = 1 ; } else if ( ! strcmp ( arg , \"-uncache\" ) ) { do_uncache = GF_TRUE ; } else if ( ! strcmp ( arg , \"-exit\" ) ) auto_exit = GF_TRUE ; else if ( ! stricmp ( arg , \"-views\" ) ) { views = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-mosaic\" ) ) { mosaic = argv [ i + 1 ] ; i ++ ; } else if ( ! stricmp ( arg , \"-com\" ) ) { has_command = GF_TRUE ; i ++ ; } else if ( ! stricmp ( arg , \"-service\" ) ) { initial_service_id = atoi ( argv [ i + 1 ] ) ; i ++ ; } } } if ( is_cfg_only ) { gf_cfg_del ( cfg_file ) ; fprintf ( stderr , \"GPAC<S2SV_blank>Config<S2SV_blank>updated\\\\n\" ) ; return 0 ; } if ( do_uncache ) { const char * cache_dir = gf_cfg_get_key ( cfg_file , \"General\" , \"CacheDirectory\" ) ; do_flatten_cache ( cache_dir ) ; fprintf ( stderr , \"GPAC<S2SV_blank>Cache<S2SV_blank>dir<S2SV_blank>%s<S2SV_blank>flattened\\\\n\" , cache_dir ) ; gf_cfg_del ( cfg_file ) ; return 0 ; } if ( dump_mode && ! url_arg ) { FILE * test ; url_arg = ( char * ) gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) ; test = url_arg ? gf_fopen ( url_arg , \"rt\" ) : NULL ; if ( ! test ) url_arg = NULL ; else gf_fclose ( test ) ; if ( ! url_arg ) { fprintf ( stderr , \"Missing<S2SV_blank>argument<S2SV_blank>for<S2SV_blank>dump\\\\n\" ) ; PrintUsage ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } } if ( ! gui_mode && ! url_arg && ( gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) != NULL ) ) { gui_mode = 1 ; } # ifdef WIN32 if ( gui_mode == 1 ) { const char * opt ; TCHAR buffer [ 1024 ] ; DWORD res = GetCurrentDirectory ( 1024 , buffer ) ; buffer [ res ] = 0 ; opt = gf_cfg_get_key ( cfg_file , \"General\" , \"ModulesDirectory\" ) ; if ( strstr ( opt , buffer ) ) { gui_mode = 1 ; } else { gui_mode = 2 ; } } # endif if ( gui_mode == 1 ) { hide_shell ( 1 ) ; } if ( gui_mode ) { no_prog = 1 ; gf_set_progress_callback ( NULL , progress_quiet ) ; } if ( ! url_arg && simulation_time_in_ms ) simulation_time_in_ms += gf_sys_clock ( ) ; # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) carbon_init ( ) ; # endif if ( dump_mode ) rti_file = NULL ; if ( ! logs_set ) { gf_log_set_tool_level ( GF_LOG_ALL , GF_LOG_WARNING ) ; } if ( rti_file || logfile || log_utc_time || log_time_start ) gf_log_set_callback ( NULL , on_gpac_log ) ; if ( rti_file ) init_rti_logs ( rti_file , url_arg , use_rtix ) ; { GF_SystemRTInfo rti ; if ( gf_sys_get_rti ( 0 , & rti , 0 ) ) fprintf ( stderr , \"System<S2SV_blank>info:<S2SV_blank>%d<S2SV_blank>MB<S2SV_blank>RAM<S2SV_blank>-<S2SV_blank>%d<S2SV_blank>cores\\\\n\" , ( u32 ) ( rti . physical_memory / 1024 / 1024 ) , rti . nb_cores ) ; } if ( dump_mode ) { user . init_flags |= GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD | GF_TERM_NO_REGULATION ; if ( ! visible ) user . init_flags |= GF_TERM_INIT_HIDE ; gf_cfg_set_key ( cfg_file , \"Audio\" , \"DriverName\" , \"Raw<S2SV_blank>Audio<S2SV_blank>Output\" ) ; no_cfg_save = GF_TRUE ; } else { init_w = forced_width ; init_h = forced_height ; } user . modules = gf_modules_new ( NULL , cfg_file ) ; if ( user . modules ) i = gf_modules_get_count ( user . modules ) ; if ( ! i || ! user . modules ) { fprintf ( stderr , \"Error:<S2SV_blank>no<S2SV_blank>modules<S2SV_blank>found<S2SV_blank>-<S2SV_blank>exiting\\\\n\" ) ; if ( user . modules ) gf_modules_del ( user . modules ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } fprintf ( stderr , \"Modules<S2SV_blank>Found<S2SV_blank>:<S2SV_blank>%d<S2SV_blank>\\\\n\" , i ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"GPACVersion\" ) ; if ( ! str || strcmp ( str , GPAC_FULL_VERSION ) ) { gf_cfg_del_section ( cfg_file , \"PluginsCache\" ) ; gf_cfg_set_key ( cfg_file , \"General\" , \"GPACVersion\" , GPAC_FULL_VERSION ) ; } user . config = cfg_file ; user . EventProc = GPAC_EventProc ; user . opaque = user . modules ; if ( threading_flags ) user . init_flags |= threading_flags ; if ( no_audio ) user . init_flags |= GF_TERM_NO_AUDIO ; if ( no_regulation ) user . init_flags |= GF_TERM_NO_REGULATION ; if ( threading_flags & ( GF_TERM_NO_DECODER_THREAD | GF_TERM_NO_COMPOSITOR_THREAD ) ) term_step = GF_TRUE ; if ( dump_mode ) user . init_flags |= GF_TERM_USE_AUDIO_HW_CLOCK ; if ( bench_mode ) { gf_cfg_discard_changes ( user . config ) ; auto_exit = GF_TRUE ; gf_cfg_set_key ( user . config , \"Audio\" , \"DriverName\" , \"Raw<S2SV_blank>Audio<S2SV_blank>Output\" ) ; if ( bench_mode != 2 ) { gf_cfg_set_key ( user . config , \"Video\" , \"DriverName\" , \"Raw<S2SV_blank>Video<S2SV_blank>Output\" ) ; gf_cfg_set_key ( user . config , \"RAWVideo\" , \"RawOutput\" , \"null\" ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"OpenGLMode\" , \"disable\" ) ; } else { gf_cfg_set_key ( user . config , \"Video\" , \"DisableVSync\" , \"yes\" ) ; } } { char dim [ 50 ] ; sprintf ( dim , \"%d\" , forced_width ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"DefaultWidth\" , forced_width ? dim : NULL ) ; sprintf ( dim , \"%d\" , forced_height ) ; gf_cfg_set_key ( user . config , \"Compositor\" , \"DefaultHeight\" , forced_height ? dim : NULL ) ; } fprintf ( stderr , \"Loading<S2SV_blank>GPAC<S2SV_blank>Terminal\\\\n\" ) ; i = gf_sys_clock ( ) ; term = gf_term_new ( & user ) ; if ( ! term ) { fprintf ( stderr , \"\\\\nInit<S2SV_blank>error<S2SV_blank>-<S2SV_blank>check<S2SV_blank>you<S2SV_blank>have<S2SV_blank>at<S2SV_blank>least<S2SV_blank>one<S2SV_blank>video<S2SV_blank>out<S2SV_blank>and<S2SV_blank>one<S2SV_blank>rasterizer...\\\\nFound<S2SV_blank>modules:\\\\n\" ) ; list_modules ( user . modules ) ; gf_modules_del ( user . modules ) ; gf_cfg_discard_changes ( cfg_file ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( logfile ) gf_fclose ( logfile ) ; return 1 ; } fprintf ( stderr , \"Terminal<S2SV_blank>Loaded<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>ms\\\\n\" , gf_sys_clock ( ) - i ) ; if ( bench_mode ) { display_rti = 2 ; gf_term_set_option ( term , GF_OPT_VIDEO_BENCH , ( bench_mode == 3 ) ? 2 : 1 ) ; if ( bench_mode == 1 ) bench_mode = 2 ; } if ( dump_mode ) { if ( fill_ar ) gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_FILL_SCREEN ) ; } else { str = gf_cfg_get_key ( cfg_file , \"Video\" , \"DriverName\" ) ; if ( ! bench_mode && ! strcmp ( str , \"Raw<S2SV_blank>Video<S2SV_blank>Output\" ) ) fprintf ( stderr , \"WARNING:<S2SV_blank>using<S2SV_blank>raw<S2SV_blank>output<S2SV_blank>video<S2SV_blank>(memory<S2SV_blank>only)<S2SV_blank>-<S2SV_blank>no<S2SV_blank>display<S2SV_blank>used\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"Audio\" , \"DriverName\" ) ; if ( ! str || ! strcmp ( str , \"No<S2SV_blank>Audio<S2SV_blank>Output<S2SV_blank>Available\" ) ) fprintf ( stderr , \"WARNING:<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>output<S2SV_blank>available<S2SV_blank>-<S2SV_blank>make<S2SV_blank>sure<S2SV_blank>no<S2SV_blank>other<S2SV_blank>program<S2SV_blank>is<S2SV_blank>locking<S2SV_blank>the<S2SV_blank>sound<S2SV_blank>card\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"NoMIMETypeFetch\" ) ; no_mime_check = ( str && ! stricmp ( str , \"yes\" ) ) ? 1 : 0 ; } str = gf_cfg_get_key ( cfg_file , \"HTTPProxy\" , \"Enabled\" ) ; if ( str && ! strcmp ( str , \"yes\" ) ) { str = gf_cfg_get_key ( cfg_file , \"HTTPProxy\" , \"Name\" ) ; if ( str ) fprintf ( stderr , \"HTTP<S2SV_blank>Proxy<S2SV_blank>%s<S2SV_blank>enabled\\\\n\" , str ) ; } if ( rti_file ) { str = gf_cfg_get_key ( cfg_file , \"General\" , \"RTIRefreshPeriod\" ) ; if ( str ) { rti_update_time_ms = atoi ( str ) ; } else { gf_cfg_set_key ( cfg_file , \"General\" , \"RTIRefreshPeriod\" , \"200\" ) ; } UpdateRTInfo ( \"At<S2SV_blank>GPAC<S2SV_blank>load<S2SV_blank>time\\\\n\" ) ; } Run = 1 ; if ( dump_mode ) { if ( ! nb_times ) { times [ 0 ] = 0 ; nb_times ++ ; } ret_val = dump_file ( url_arg , out_arg , dump_mode , fps , forced_width , forced_height , scale , times , nb_times ) ; Run = 0 ; } else if ( views ) { } else if ( ! gui_mode && url_arg ) { char * ext ; <S2SV_StartBug> strcpy ( the_url , url_arg ) ; <S2SV_EndBug> ext = strrchr ( the_url , '.' ) ; if ( ext && ( ! stricmp ( ext , \".m3u\" ) || ! stricmp ( ext , \".pls\" ) ) ) { GF_Err e = GF_OK ; fprintf ( stderr , \"Opening<S2SV_blank>Playlist<S2SV_blank>%s\\\\n\" , the_url ) ; strcpy ( pl_path , the_url ) ; if ( ! strncmp ( \"http:\" , the_url , 5 ) ) { GF_DownloadSession * sess = gf_dm_sess_new ( term -> downloader , the_url , GF_NETIO_SESSION_NOT_THREADED , NULL , NULL , & e ) ; if ( sess ) { e = gf_dm_sess_process ( sess ) ; <S2SV_StartBug> if ( ! e ) strcpy ( the_url , gf_dm_sess_get_cache_name ( sess ) ) ; <S2SV_EndBug> gf_dm_sess_del ( sess ) ; } } playlist = e ? NULL : gf_fopen ( the_url , \"rt\" ) ; readonly_playlist = 1 ; if ( playlist ) { request_next_playlist_item = GF_TRUE ; } else { if ( e ) fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>playlist<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , the_url , gf_error_to_string ( e ) ) ; fprintf ( stderr , \"Hit<S2SV_blank>\\'h\\'<S2SV_blank>for<S2SV_blank>help\\\\n\\\\n\" ) ; } } else { fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; if ( pause_at_first ) fprintf ( stderr , \"[Status:<S2SV_blank>Paused]\\\\n\" ) ; gf_term_connect_from_time ( term , the_url , ( u64 ) ( play_from * 1000 ) , pause_at_first ) ; } } else { fprintf ( stderr , \"Hit<S2SV_blank>\\'h\\'<S2SV_blank>for<S2SV_blank>help\\\\n\\\\n\" ) ; str = gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) ; if ( str ) { <S2SV_StartBug> strcpy ( the_url , \"MP4Client<S2SV_blank>\" GPAC_FULL_VERSION ) ; <S2SV_EndBug> gf_term_connect ( term , str ) ; startup_file = 1 ; is_connected = 1 ; } } if ( gui_mode == 2 ) gui_mode = 0 ; if ( start_fs ) gf_term_set_option ( term , GF_OPT_FULLSCREEN , 1 ) ; if ( views ) { char szTemp [ 4046 ] ; sprintf ( szTemp , \"views://%s\" , views ) ; gf_term_connect ( term , szTemp ) ; } if ( mosaic ) { char szTemp [ 4046 ] ; sprintf ( szTemp , \"mosaic://%s\" , mosaic ) ; gf_term_connect ( term , szTemp ) ; } if ( bench_mode ) { rti_update_time_ms = 500 ; bench_mode_start = gf_sys_clock ( ) ; } while ( Run ) { if ( ( gui_mode == 1 ) || ! gf_prompt_has_input ( ) ) { if ( reload ) { reload = 0 ; gf_term_disconnect ( term ) ; gf_term_connect ( term , startup_file ? gf_cfg_get_key ( cfg_file , \"General\" , \"StartupFile\" ) : the_url ) ; } if ( restart && gf_term_get_option ( term , GF_OPT_IS_OVER ) ) { restart = 0 ; gf_term_play_from_time ( term , 0 , 0 ) ; } if ( request_next_playlist_item ) { c = '\\\\n' ; request_next_playlist_item = 0 ; goto force_input ; } if ( has_command && is_connected ) { has_command = GF_FALSE ; for ( i = 0 ; i < ( u32 ) argc ; i ++ ) { if ( ! strcmp ( argv [ i ] , \"-com\" ) ) { gf_term_scene_update ( term , NULL , argv [ i + 1 ] ) ; i ++ ; } } } if ( initial_service_id && is_connected ) { GF_ObjectManager * root_od = gf_term_get_root_object ( term ) ; if ( root_od ) { gf_term_select_service ( term , root_od , initial_service_id ) ; initial_service_id = 0 ; } } if ( ! use_rtix || display_rti ) UpdateRTInfo ( NULL ) ; if ( term_step ) { gf_term_process_step ( term ) ; } else { gf_sleep ( rti_update_time_ms ) ; } if ( auto_exit && eos_seen && gf_term_get_option ( term , GF_OPT_IS_OVER ) ) { Run = GF_FALSE ; } if ( simulation_time_in_ms && ( ( gf_term_get_elapsed_time_in_ms ( term ) > simulation_time_in_ms ) || ( ! url_arg && gf_sys_clock ( ) > simulation_time_in_ms ) ) ) { Run = GF_FALSE ; } continue ; } c = gf_prompt_get_char ( ) ; force_input : switch ( c ) { case 'q' : { GF_Event evt ; memset ( & evt , 0 , sizeof ( GF_Event ) ) ; evt . type = GF_EVENT_QUIT ; gf_term_send_event ( term , & evt ) ; } break ; case 'X' : exit ( 0 ) ; break ; case 'Q' : break ; case 'o' : startup_file = 0 ; gf_term_disconnect ( term ) ; fprintf ( stderr , \"Enter<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL\\\\n\" ) ; if ( 1 > scanf ( \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>absolute<S2SV_blank>URL,<S2SV_blank>aborting\\\\n\" ) ; break ; } if ( rti_file ) init_rti_logs ( rti_file , the_url , use_rtix ) ; gf_term_connect ( term , the_url ) ; break ; case 'O' : gf_term_disconnect ( term ) ; fprintf ( stderr , \"Enter<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL<S2SV_blank>to<S2SV_blank>the<S2SV_blank>playlist\\\\n\" ) ; if ( 1 > scanf ( \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>the<S2SV_blank>absolute<S2SV_blank>URL,<S2SV_blank>aborting.\\\\n\" ) ; break ; } playlist = gf_fopen ( the_url , \"rt\" ) ; if ( playlist ) { if ( 1 > fscanf ( playlist , \"%s\" , the_url ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>any<S2SV_blank>URL<S2SV_blank>from<S2SV_blank>playlist,<S2SV_blank>aborting.\\\\n\" ) ; gf_fclose ( playlist ) ; break ; } fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect ( term , the_url ) ; } break ; case '\\\\n' : case 'N' : if ( playlist ) { int res ; gf_term_disconnect ( term ) ; res = fscanf ( playlist , \"%s\" , the_url ) ; if ( ( res == EOF ) && loop_at_end ) { fseek ( playlist , 0 , SEEK_SET ) ; res = fscanf ( playlist , \"%s\" , the_url ) ; } if ( res == EOF ) { fprintf ( stderr , \"No<S2SV_blank>more<S2SV_blank>items<S2SV_blank>-<S2SV_blank>exiting\\\\n\" ) ; Run = 0 ; } else if ( the_url [ 0 ] == '#' ) { request_next_playlist_item = GF_TRUE ; } else { fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect_with_path ( term , the_url , pl_path ) ; } } break ; case 'P' : if ( playlist ) { u32 count ; gf_term_disconnect ( term ) ; if ( 1 > scanf ( \"%u\" , & count ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>number,<S2SV_blank>aborting.\\\\n\" ) ; break ; } while ( count ) { if ( fscanf ( playlist , \"%s\" , the_url ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>line,<S2SV_blank>aborting\\\\n\" ) ; break ; } count -- ; } fprintf ( stderr , \"Opening<S2SV_blank>URL<S2SV_blank>%s\\\\n\" , the_url ) ; gf_term_connect ( term , the_url ) ; } break ; case 'r' : if ( is_connected ) reload = 1 ; break ; case 'D' : if ( is_connected ) gf_term_disconnect ( term ) ; break ; case 'p' : if ( is_connected ) { Bool is_pause = gf_term_get_option ( term , GF_OPT_PLAY_STATE ) ; fprintf ( stderr , \"[Status:<S2SV_blank>%s]\\\\n\" , is_pause ? \"Playing\" : \"Paused\" ) ; gf_term_set_option ( term , GF_OPT_PLAY_STATE , is_pause ? GF_STATE_PLAYING : GF_STATE_PAUSED ) ; } break ; case 's' : if ( is_connected ) { gf_term_set_option ( term , GF_OPT_PLAY_STATE , GF_STATE_STEP_PAUSE ) ; fprintf ( stderr , \"Step<S2SV_blank>time:<S2SV_blank>\" ) ; PrintTime ( gf_term_get_time_in_ms ( term ) ) ; fprintf ( stderr , \"\\\\n\" ) ; } break ; case 'z' : case 'T' : if ( ! CanSeek || ( Duration <= 2000 ) ) { fprintf ( stderr , \"scene<S2SV_blank>not<S2SV_blank>seekable\\\\n\" ) ; } else { Double res ; s32 seekTo ; fprintf ( stderr , \"Duration:<S2SV_blank>\" ) ; PrintTime ( Duration ) ; res = gf_term_get_time_in_ms ( term ) ; if ( c == 'z' ) { res *= 100 ; res /= ( s64 ) Duration ; fprintf ( stderr , \"<S2SV_blank>(current<S2SV_blank>%.2f<S2SV_blank>%%)\\\\nEnter<S2SV_blank>Seek<S2SV_blank>percentage:\\\\n\" , res ) ; if ( scanf ( \"%d\" , & seekTo ) == 1 ) { if ( seekTo > 100 ) seekTo = 100 ; res = ( Double ) ( s64 ) Duration ; res /= 100 ; res *= seekTo ; gf_term_play_from_time ( term , ( u64 ) ( s64 ) res , 0 ) ; } } else { u32 r , h , m , s ; fprintf ( stderr , \"<S2SV_blank>-<S2SV_blank>Current<S2SV_blank>Time:<S2SV_blank>\" ) ; PrintTime ( ( u64 ) res ) ; fprintf ( stderr , \"\\\\nEnter<S2SV_blank>seek<S2SV_blank>time<S2SV_blank>(Format:<S2SV_blank>s,<S2SV_blank>m:s<S2SV_blank>or<S2SV_blank>h:m:s):\\\\n\" ) ; h = m = s = 0 ; r = scanf ( \"%d:%d:%d\" , & h , & m , & s ) ; if ( r == 2 ) { s = m ; m = h ; h = 0 ; } else if ( r == 1 ) { s = h ; m = h = 0 ; } if ( r && ( r <= 3 ) ) { u64 time = h * 3600 + m * 60 + s ; gf_term_play_from_time ( term , time * 1000 , 0 ) ; } } } break ; case 't' : { if ( is_connected ) { fprintf ( stderr , \"Current<S2SV_blank>Time:<S2SV_blank>\" ) ; PrintTime ( gf_term_get_time_in_ms ( term ) ) ; fprintf ( stderr , \"<S2SV_blank>-<S2SV_blank>Duration:<S2SV_blank>\" ) ; PrintTime ( Duration ) ; fprintf ( stderr , \"\\\\n\" ) ; } } break ; case 'w' : if ( is_connected ) PrintWorldInfo ( term ) ; break ; case 'v' : if ( is_connected ) PrintODList ( term , NULL , 0 , 0 , \"Root\" ) ; break ; case 'i' : if ( is_connected ) { u32 ID ; fprintf ( stderr , \"Enter<S2SV_blank>OD<S2SV_blank>ID<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>main<S2SV_blank>OD):<S2SV_blank>\" ) ; fflush ( stderr ) ; if ( scanf ( \"%ud\" , & ID ) == 1 ) { ViewOD ( term , ID , ( u32 ) - 1 , NULL ) ; } else { char str_url [ GF_MAX_PATH ] ; if ( scanf ( \"%s\" , str_url ) == 1 ) ViewOD ( term , 0 , ( u32 ) - 1 , str_url ) ; } } break ; case 'j' : if ( is_connected ) { u32 num ; do { fprintf ( stderr , \"Enter<S2SV_blank>OD<S2SV_blank>number<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>main<S2SV_blank>OD):<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%ud\" , & num ) ) ; ViewOD ( term , ( u32 ) - 1 , num , NULL ) ; } break ; case 'b' : if ( is_connected ) ViewODs ( term , 1 ) ; break ; case 'm' : if ( is_connected ) ViewODs ( term , 0 ) ; break ; case 'l' : list_modules ( user . modules ) ; break ; case 'n' : if ( is_connected ) set_navigation ( ) ; break ; case 'x' : if ( is_connected ) gf_term_set_option ( term , GF_OPT_NAVIGATION_TYPE , 0 ) ; break ; case 'd' : if ( is_connected ) { GF_ObjectManager * odm = NULL ; char radname [ GF_MAX_PATH ] , * sExt ; GF_Err e ; u32 i , count , odid ; Bool xml_dump , std_out ; radname [ 0 ] = 0 ; do { fprintf ( stderr , \"Enter<S2SV_blank>Inline<S2SV_blank>OD<S2SV_blank>ID<S2SV_blank>if<S2SV_blank>any<S2SV_blank>or<S2SV_blank>0<S2SV_blank>:<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%ud\" , & odid ) ) ; if ( odid ) { GF_ObjectManager * root_odm = gf_term_get_root_object ( term ) ; if ( ! root_odm ) break ; count = gf_term_get_object_count ( term , root_odm ) ; for ( i = 0 ; i < count ; i ++ ) { GF_MediaInfo info ; odm = gf_term_get_object ( term , root_odm , i ) ; if ( gf_term_get_object_info ( term , odm , & info ) == GF_OK ) { if ( info . od -> objectDescriptorID == odid ) break ; } odm = NULL ; } } do { fprintf ( stderr , \"Enter<S2SV_blank>file<S2SV_blank>radical<S2SV_blank>name<S2SV_blank>(+\\\\\\'.x\\\\\\'<S2SV_blank>for<S2SV_blank>XML<S2SV_blank>dumping)<S2SV_blank>-<S2SV_blank>\\\\\"std\\\\\"<S2SV_blank>for<S2SV_blank>stderr:<S2SV_blank>\" ) ; fflush ( stderr ) ; } while ( 1 > scanf ( \"%s\" , radname ) ) ; sExt = strrchr ( radname , '.' ) ; xml_dump = 0 ; if ( sExt ) { if ( ! stricmp ( sExt , \".x\" ) ) xml_dump = 1 ; sExt [ 0 ] = 0 ; } std_out = strnicmp ( radname , \"std\" , 3 ) ? 0 : 1 ; e = gf_term_dump_scene ( term , std_out ? NULL : radname , NULL , xml_dump , 0 , odm ) ; fprintf ( stderr , \"Dump<S2SV_blank>done<S2SV_blank>(%s)\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'c' : PrintGPACConfig ( ) ; break ; case '3' : { Bool use_3d = ! gf_term_get_option ( term , GF_OPT_USE_OPENGL ) ; if ( gf_term_set_option ( term , GF_OPT_USE_OPENGL , use_3d ) == GF_OK ) { fprintf ( stderr , \"Using<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>2D<S2SV_blank>drawing\\\\n\" , use_3d ? \"OpenGL\" : \"2D<S2SV_blank>rasterizer\" ) ; } } break ; case 'k' : { Bool opt = gf_term_get_option ( term , GF_OPT_STRESS_MODE ) ; opt = ! opt ; fprintf ( stderr , \"Turning<S2SV_blank>stress<S2SV_blank>mode<S2SV_blank>%s\\\\n\" , opt ? \"on\" : \"off\" ) ; gf_term_set_option ( term , GF_OPT_STRESS_MODE , opt ) ; } break ; case '4' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_4_3 ) ; break ; case '5' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_16_9 ) ; break ; case '6' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_FILL_SCREEN ) ; break ; case '7' : gf_term_set_option ( term , GF_OPT_ASPECT_RATIO , GF_ASPECT_RATIO_KEEP ) ; break ; case 'C' : switch ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) ) { case GF_MEDIA_CACHE_DISABLED : gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , GF_MEDIA_CACHE_ENABLED ) ; break ; case GF_MEDIA_CACHE_ENABLED : gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , GF_MEDIA_CACHE_DISABLED ) ; break ; case GF_MEDIA_CACHE_RUNNING : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>is<S2SV_blank>running<S2SV_blank>-<S2SV_blank>please<S2SV_blank>stop<S2SV_blank>it<S2SV_blank>first\\\\n\" ) ; continue ; } switch ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) ) { case GF_MEDIA_CACHE_ENABLED : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Enabled\\\\n\" ) ; break ; case GF_MEDIA_CACHE_DISABLED : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Disabled\\\\n\" ) ; break ; case GF_MEDIA_CACHE_RUNNING : fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>Running\\\\n\" ) ; break ; } break ; case 'S' : case 'A' : if ( gf_term_get_option ( term , GF_OPT_MEDIA_CACHE ) == GF_MEDIA_CACHE_RUNNING ) { gf_term_set_option ( term , GF_OPT_MEDIA_CACHE , ( c == 'S' ) ? GF_MEDIA_CACHE_DISABLED : GF_MEDIA_CACHE_DISCARD ) ; fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>stopped\\\\n\" ) ; } else { fprintf ( stderr , \"Streaming<S2SV_blank>Cache<S2SV_blank>not<S2SV_blank>running\\\\n\" ) ; } break ; case 'R' : display_rti = ! display_rti ; ResetCaption ( ) ; break ; case 'F' : if ( display_rti ) display_rti = 0 ; else display_rti = 2 ; ResetCaption ( ) ; break ; case 'u' : { GF_Err e ; char szCom [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>command<S2SV_blank>to<S2SV_blank>send:\\\\n\" ) ; fflush ( stdin ) ; szCom [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szCom ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>command<S2SV_blank>to<S2SV_blank>send,<S2SV_blank>aborting.\\\\n\" ) ; break ; } e = gf_term_scene_update ( term , NULL , szCom ) ; if ( e ) fprintf ( stderr , \"Processing<S2SV_blank>command<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'e' : { GF_Err e ; char jsCode [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>JavaScript<S2SV_blank>code<S2SV_blank>to<S2SV_blank>evaluate:\\\\n\" ) ; fflush ( stdin ) ; jsCode [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , jsCode ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>code<S2SV_blank>to<S2SV_blank>evaluate,<S2SV_blank>aborting.\\\\n\" ) ; break ; } e = gf_term_scene_update ( term , \"application/ecmascript\" , jsCode ) ; if ( e ) fprintf ( stderr , \"Processing<S2SV_blank>JS<S2SV_blank>code<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; } break ; case 'L' : { char szLog [ 1024 ] , * cur_logs ; cur_logs = gf_log_get_tools_levels ( ) ; fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>log<S2SV_blank>level<S2SV_blank>(current<S2SV_blank>tools<S2SV_blank>%s):\\\\n\" , cur_logs ) ; gf_free ( cur_logs ) ; if ( scanf ( \"%s\" , szLog ) < 1 ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>new<S2SV_blank>log<S2SV_blank>level,<S2SV_blank>aborting.\\\\n\" ) ; break ; } gf_log_modify_tools_levels ( szLog ) ; } break ; case 'g' : { GF_SystemRTInfo rti ; gf_sys_get_rti ( rti_update_time_ms , & rti , 0 ) ; fprintf ( stderr , \"GPAC<S2SV_blank>allocated<S2SV_blank>memory<S2SV_blank>\" LLD \"\\\\n\" , rti . gpac_memory ) ; } break ; case 'M' : { u32 size ; do { fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>video<S2SV_blank>cache<S2SV_blank>memory<S2SV_blank>in<S2SV_blank>kBytes<S2SV_blank>(current<S2SV_blank>%ud):\\\\n\" , gf_term_get_option ( term , GF_OPT_VIDEO_CACHE_SIZE ) ) ; } while ( 1 > scanf ( \"%ud\" , & size ) ) ; gf_term_set_option ( term , GF_OPT_VIDEO_CACHE_SIZE , size ) ; } break ; case 'H' : { u32 http_bitrate = gf_term_get_option ( term , GF_OPT_HTTP_MAX_RATE ) ; do { fprintf ( stderr , \"Enter<S2SV_blank>new<S2SV_blank>http<S2SV_blank>bitrate<S2SV_blank>in<S2SV_blank>bps<S2SV_blank>(0<S2SV_blank>for<S2SV_blank>none)<S2SV_blank>-<S2SV_blank>current<S2SV_blank>limit:<S2SV_blank>%d\\\\n\" , http_bitrate ) ; } while ( 1 > scanf ( \"%ud\" , & http_bitrate ) ) ; gf_term_set_option ( term , GF_OPT_HTTP_MAX_RATE , http_bitrate ) ; } break ; case 'E' : gf_term_set_option ( term , GF_OPT_RELOAD_CONFIG , 1 ) ; break ; case 'B' : switch_bench ( ! bench_mode ) ; break ; case 'Y' : { char szOpt [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>option<S2SV_blank>to<S2SV_blank>set<S2SV_blank>(Section:Name=Value):\\\\n\" ) ; fflush ( stdin ) ; szOpt [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szOpt ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>option\\\\n\" ) ; break ; } set_cfg_option ( szOpt ) ; } break ; case 'Z' : { char szFileName [ 100 ] ; u32 nb_pass , nb_views , offscreen_view = 0 ; GF_VideoSurface fb ; GF_Err e ; nb_pass = 1 ; nb_views = gf_term_get_option ( term , GF_OPT_NUM_STEREO_VIEWS ) ; if ( nb_views > 1 ) { fprintf ( stderr , \"Auto-stereo<S2SV_blank>mode<S2SV_blank>detected<S2SV_blank>-<S2SV_blank>type<S2SV_blank>number<S2SV_blank>of<S2SV_blank>view<S2SV_blank>to<S2SV_blank>dump<S2SV_blank>(0<S2SV_blank>is<S2SV_blank>main<S2SV_blank>output,<S2SV_blank>1<S2SV_blank>to<S2SV_blank>%d<S2SV_blank>offscreen<S2SV_blank>view,<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>all<S2SV_blank>offscreen,<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>all<S2SV_blank>offscreen<S2SV_blank>and<S2SV_blank>main)\\\\n\" , nb_views , nb_views + 1 , nb_views + 2 ) ; if ( scanf ( \"%d\" , & offscreen_view ) != 1 ) { offscreen_view = 0 ; } if ( offscreen_view == nb_views + 1 ) { offscreen_view = 1 ; nb_pass = nb_views ; } else if ( offscreen_view == nb_views + 2 ) { offscreen_view = 0 ; nb_pass = nb_views + 1 ; } } while ( nb_pass ) { nb_pass -- ; if ( offscreen_view ) { sprintf ( szFileName , \"view%d_dump.png\" , offscreen_view ) ; e = gf_term_get_offscreen_buffer ( term , & fb , offscreen_view - 1 , 0 ) ; } else { sprintf ( szFileName , \"gpac_video_dump_\" LLU \".png\" , gf_net_get_utc ( ) ) ; e = gf_term_get_screen_buffer ( term , & fb ) ; } offscreen_view ++ ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>dumping<S2SV_blank>screen<S2SV_blank>buffer<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; nb_pass = 0 ; } else { # ifndef GPAC_DISABLE_AV_PARSERS u32 dst_size = fb . width * fb . height * 4 ; char * dst = ( char * ) gf_malloc ( sizeof ( char ) * dst_size ) ; e = gf_img_png_enc ( fb . video_buffer , fb . width , fb . height , fb . pitch_y , fb . pixel_format , dst , & dst_size ) ; if ( e ) { fprintf ( stderr , \"Error<S2SV_blank>encoding<S2SV_blank>PNG<S2SV_blank>%s\\\\n\" , gf_error_to_string ( e ) ) ; nb_pass = 0 ; } else { FILE * png = gf_fopen ( szFileName , \"wb\" ) ; if ( ! png ) { fprintf ( stderr , \"Error<S2SV_blank>writing<S2SV_blank>file<S2SV_blank>%s\\\\n\" , szFileName ) ; nb_pass = 0 ; } else { gf_fwrite ( dst , dst_size , 1 , png ) ; gf_fclose ( png ) ; fprintf ( stderr , \"Dump<S2SV_blank>to<S2SV_blank>%s\\\\n\" , szFileName ) ; } } if ( dst ) gf_free ( dst ) ; gf_term_release_screen_buffer ( term , & fb ) ; # endif } } fprintf ( stderr , \"Done:<S2SV_blank>%s\\\\n\" , szFileName ) ; } break ; case 'G' : { GF_ObjectManager * root_od , * odm ; u32 index ; char szOpt [ 8192 ] ; fprintf ( stderr , \"Enter<S2SV_blank>0-based<S2SV_blank>index<S2SV_blank>of<S2SV_blank>object<S2SV_blank>to<S2SV_blank>select<S2SV_blank>or<S2SV_blank>service<S2SV_blank>ID:\\\\n\" ) ; fflush ( stdin ) ; szOpt [ 0 ] = 0 ; if ( 1 > scanf ( \"%[^\\\\t\\\\n]\" , szOpt ) ) { fprintf ( stderr , \"Cannot<S2SV_blank>read<S2SV_blank>OD<S2SV_blank>ID\\\\n\" ) ; break ; } index = atoi ( szOpt ) ; odm = NULL ; root_od = gf_term_get_root_object ( term ) ; if ( root_od ) { if ( gf_term_find_service ( term , root_od , index ) ) { gf_term_select_service ( term , root_od , index ) ; } else { fprintf ( stderr , \"Cannot<S2SV_blank>find<S2SV_blank>service<S2SV_blank>%d<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>with<S2SV_blank>object<S2SV_blank>index\\\\n\" , index ) ; odm = gf_term_get_object ( term , root_od , index ) ; if ( odm ) { gf_term_select_object ( term , odm ) ; } else { fprintf ( stderr , \"Cannot<S2SV_blank>find<S2SV_blank>object<S2SV_blank>at<S2SV_blank>index<S2SV_blank>%d\\\\n\" , index ) ; } } } } break ; case 'h' : PrintHelp ( ) ; break ; default : break ; } } if ( bench_mode ) { PrintAVInfo ( GF_TRUE ) ; } if ( simulation_time_in_ms ) { gf_log_set_strict_error ( 0 ) ; } i = gf_sys_clock ( ) ; gf_term_disconnect ( term ) ; if ( rti_file ) UpdateRTInfo ( \"Disconnected\\\\n\" ) ; fprintf ( stderr , \"Deleting<S2SV_blank>terminal...<S2SV_blank>\" ) ; if ( playlist ) gf_fclose ( playlist ) ; # if defined ( __DARWIN__ ) || defined ( __APPLE__ ) carbon_uninit ( ) ; # endif gf_term_del ( term ) ; fprintf ( stderr , \"done<S2SV_blank>(in<S2SV_blank>%d<S2SV_blank>ms)<S2SV_blank>-<S2SV_blank>ran<S2SV_blank>for<S2SV_blank>%d<S2SV_blank>ms\\\\n\" , gf_sys_clock ( ) - i , gf_sys_clock ( ) ) ; fprintf ( stderr , \"GPAC<S2SV_blank>cleanup<S2SV_blank>...\\\\n\" ) ; gf_modules_del ( user . modules ) ; if ( no_cfg_save ) gf_cfg_discard_changes ( cfg_file ) ; gf_cfg_del ( cfg_file ) ; gf_sys_close ( ) ; if ( rti_logs ) gf_fclose ( rti_logs ) ; if ( logfile ) gf_fclose ( logfile ) ; if ( gui_mode ) { hide_shell ( 2 ) ; } # ifdef GPAC_MEMORY_TRACKING if ( mem_track && ( gf_memory_size ( ) || gf_file_handles_count ( ) ) ) { gf_log_set_tool_level ( GF_LOG_MEMORY , GF_LOG_INFO ) ; gf_memory_print ( ) ; return 2 ; } # endif return ret_val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ext ; if ( strlen ( url_arg ) >= sizeof ( the_url ) ) { fprintf ( stderr , \"Input<S2SV_blank>url<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long,<S2SV_blank>truncating<S2SV_blank>to<S2SV_blank>%d<S2SV_blank>chars.\\\\n\" , url_arg , ( int ) ( sizeof ( the_url ) - 1 ) ) ; strncpy ( the_url , url_arg , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_url ) - 1 ] = 0 ; } else { <S2SV_ModStart> url_arg ) ; } <S2SV_ModStart> ! e ) { strncpy <S2SV_ModEnd> ( the_url , <S2SV_ModStart> ( sess ) , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_cfg ) - 1 ] = 0 ; } <S2SV_ModEnd> gf_dm_sess_del ( sess <S2SV_ModStart> str ) { strncpy <S2SV_ModEnd> ( the_url , <S2SV_ModStart> , \"MP4Client<S2SV_blank>\" GPAC_FULL_VERSION , sizeof ( the_url ) - 1 ) ; the_url [ sizeof ( the_url ) - 1 ] = 0 <S2SV_ModEnd> ; gf_term_connect (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int X509_verify ( X509 * a , EVP_PKEY * r ) <S2SV_StartBug> { <S2SV_EndBug> return ( ASN1_item_verify ( ASN1_ITEM_rptr ( X509_CINF ) , a -> sig_alg , a -> signature , a -> cert_info , r ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> r ) { if ( X509_ALGOR_cmp ( a -> sig_alg , a -> cert_info -> signature ) ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2220\n\n```\nCWE-119 PHP_FUNCTION ( radius_get_vendor_attr ) { <S2SV_StartBug> int res ; <S2SV_EndBug> <S2SV_StartBug> const void * data ; <S2SV_EndBug> int len ; <S2SV_StartBug> u_int32_t vendor ; <S2SV_EndBug> <S2SV_StartBug> if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"s\" , & data , & len ) == FAILURE ) { <S2SV_EndBug> return ; } <S2SV_StartBug> res = rad_get_vendor_attr ( & vendor , & data , ( size_t * ) & len ) ; <S2SV_EndBug> if ( res == - 1 ) { RETURN_FALSE ; } else { array_init ( return_value ) ; <S2SV_StartBug> add_assoc_long ( return_value , \"attr\" , res ) ; <S2SV_EndBug> add_assoc_long ( return_value , \"vendor\" , vendor ) ; <S2SV_StartBug> add_assoc_stringl ( return_value , \"data\" , ( char * ) data , len , 1 ) ; <S2SV_EndBug> return ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> radius_get_vendor_attr ) { <S2SV_ModEnd> const void * <S2SV_ModStart> void * data , * raw <S2SV_ModStart> ; u_int32_t vendor ; unsigned char type ; size_t data_len <S2SV_ModStart> \"s\" , & raw <S2SV_ModEnd> , & len <S2SV_ModStart> return ; } if ( <S2SV_ModEnd> rad_get_vendor_attr ( & <S2SV_ModStart> vendor , & type , & data , & data_len , raw , len ) <S2SV_ModEnd> == - 1 <S2SV_ModStart> , \"attr\" , type <S2SV_ModEnd> ) ; add_assoc_long <S2SV_ModStart> ) data , data_len <S2SV_ModEnd> , 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_resume_port ( struct asd_sas_phy * phy ) { struct domain_device * dev ; struct asd_sas_port * port = phy -> port ; struct sas_ha_struct * sas_ha = phy -> ha ; struct sas_internal * si = to_sas_internal ( sas_ha -> core . shost -> transportt ) ; if ( si -> dft -> lldd_port_formed ) si -> dft -> lldd_port_formed ( phy ) ; if ( port -> suspended ) port -> suspended = 0 ; else { return ; } list_for_each_entry ( dev , & port -> dev_list , dev_list_node ) { int i , rc ; rc = sas_notify_lldd_dev_found ( dev ) ; if ( rc ) { <S2SV_StartBug> sas_unregister_dev ( port , dev ) ; <S2SV_EndBug> continue ; } if ( dev -> dev_type == SAS_EDGE_EXPANDER_DEVICE || dev -> dev_type == SAS_FANOUT_EXPANDER_DEVICE ) { dev -> ex_dev . ex_change_count = - 1 ; for ( i = 0 ; i < dev -> ex_dev . num_phys ; i ++ ) { struct ex_phy * phy = & dev -> ex_dev . ex_phy [ i ] ; phy -> phy_change_count = - 1 ; } } } sas_discover_event ( port , DISCE_RESUME ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> port , dev ) ; sas_destruct_devices ( port\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 int key_update ( key_ref_t key_ref , const void * payload , size_t plen ) { struct key_preparsed_payload prep ; struct key * key = key_ref_to_ptr ( key_ref ) ; int ret ; key_check ( key ) ; ret = key_permission ( key_ref , KEY_NEED_WRITE ) ; if ( ret < 0 ) return ret ; if ( ! key -> type -> update ) return - EOPNOTSUPP ; memset ( & prep , 0 , sizeof ( prep ) ) ; prep . data = payload ; prep . datalen = plen ; prep . quotalen = key -> type -> def_datalen ; prep . expiry = TIME_T_MAX ; if ( key -> type -> preparse ) { ret = key -> type -> preparse ( & prep ) ; if ( ret < 0 ) goto error ; } down_write ( & key -> sem ) ; ret = key -> type -> update ( key , & prep ) ; if ( ret == 0 ) <S2SV_StartBug> clear_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ; <S2SV_EndBug> up_write ( & key -> sem ) ; error : if ( key -> type -> preparse ) key -> type -> free_preparse ( & prep ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) mark_key_instantiated ( key , 0 <S2SV_ModEnd> ) ; up_write\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void rd_pick_partition ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_EndBug> TOKENEXTRA * * tp , int mi_row , <S2SV_StartBug> int mi_col , BLOCK_SIZE bsize , int * rate , <S2SV_EndBug> int64_t * dist , int do_recon , int64_t best_rd ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; const int mi_step = num_8x8_blocks_wide_lookup [ bsize ] / 2 ; ENTROPY_CONTEXT l [ 16 * MAX_MB_PLANE ] , a [ 16 * MAX_MB_PLANE ] ; PARTITION_CONTEXT sl [ 8 ] , sa [ 8 ] ; TOKENEXTRA * tp_orig = * tp ; <S2SV_StartBug> PICK_MODE_CONTEXT * ctx = get_block_context ( x , bsize ) ; <S2SV_EndBug> int i , pl ; BLOCK_SIZE subsize ; <S2SV_StartBug> int this_rate , sum_rate = 0 , best_rate = INT_MAX ; <S2SV_EndBug> int64_t this_dist , sum_dist = 0 , best_dist = INT64_MAX ; int64_t sum_rd = 0 ; int do_split = bsize >= BLOCK_8X8 ; int do_rect = 1 ; const int force_horz_split = ( mi_row + mi_step >= cm -> mi_rows ) ; const int force_vert_split = ( mi_col + mi_step >= cm -> mi_cols ) ; const int xss = x -> e_mbd . plane [ 1 ] . subsampling_x ; const int yss = x -> e_mbd . plane [ 1 ] . subsampling_y ; <S2SV_StartBug> int partition_none_allowed = ! force_horz_split && ! force_vert_split ; <S2SV_EndBug> int partition_horz_allowed = ! force_vert_split && yss <= xss && bsize >= BLOCK_8X8 ; int partition_vert_allowed = ! force_horz_split && xss <= yss && bsize >= BLOCK_8X8 ; ( void ) * tp_orig ; <S2SV_StartBug> if ( bsize < BLOCK_8X8 ) { <S2SV_EndBug> if ( x -> ab_index != 0 ) { * rate = 0 ; * dist = 0 ; return ; } } assert ( num_8x8_blocks_wide_lookup [ bsize ] == <S2SV_StartBug> num_8x8_blocks_high_lookup [ bsize ] ) ; <S2SV_EndBug> <S2SV_StartBug> if ( bsize == BLOCK_16X16 ) { <S2SV_EndBug> set_offsets ( cpi , tile , mi_row , mi_col , bsize ) ; x -> mb_energy = vp9_block_energy ( cpi , x , bsize ) ; <S2SV_StartBug> } else { <S2SV_EndBug> x -> in_active_map = check_active_map ( cpi , x , mi_row , mi_col , bsize ) ; } if ( cpi -> sf . auto_min_max_partition_size ) { <S2SV_StartBug> partition_none_allowed &= ( bsize <= cpi -> sf . max_partition_size && <S2SV_EndBug> bsize >= cpi -> sf . min_partition_size ) ; <S2SV_StartBug> partition_horz_allowed &= ( ( bsize <= cpi -> sf . max_partition_size && <S2SV_EndBug> bsize > cpi -> sf . min_partition_size ) || force_horz_split ) ; <S2SV_StartBug> partition_vert_allowed &= ( ( bsize <= cpi -> sf . max_partition_size && <S2SV_EndBug> bsize > cpi -> sf . min_partition_size ) || force_vert_split ) ; <S2SV_StartBug> do_split &= bsize > cpi -> sf . min_partition_size ; <S2SV_EndBug> } if ( cpi -> sf . use_square_partition_only ) { partition_horz_allowed &= force_horz_split ; partition_vert_allowed &= force_vert_split ; } <S2SV_StartBug> save_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; <S2SV_EndBug> <S2SV_StartBug> if ( cpi -> sf . disable_split_var_thresh && partition_none_allowed ) { <S2SV_EndBug> unsigned int source_variancey ; vp9_setup_src_planes ( x , cpi -> Source , mi_row , mi_col ) ; source_variancey = get_sby_perpixel_variance ( cpi , x , bsize ) ; if ( source_variancey < cpi -> sf . disable_split_var_thresh ) { do_split = 0 ; <S2SV_StartBug> if ( source_variancey < cpi -> sf . disable_split_var_thresh / 2 ) <S2SV_EndBug> do_rect = 0 ; } } if ( ! x -> in_active_map && ( partition_horz_allowed || partition_vert_allowed ) ) do_split = 0 ; if ( partition_none_allowed ) { <S2SV_StartBug> rd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & this_rate , & this_dist , bsize , <S2SV_EndBug> ctx , best_rd ) ; if ( this_rate != INT_MAX ) { if ( bsize >= BLOCK_8X8 ) { pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> this_rate += x -> partition_cost [ pl ] [ PARTITION_NONE ] ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , this_rate , this_dist ) ; <S2SV_EndBug> if ( sum_rd < best_rd ) { <S2SV_StartBug> int64_t stop_thresh = 4096 ; <S2SV_EndBug> int64_t stop_thresh_rd ; best_rate = this_rate ; best_dist = this_dist ; best_rd = sum_rd ; if ( bsize >= BLOCK_8X8 ) <S2SV_StartBug> * ( get_sb_partitioning ( x , bsize ) ) = bsize ; <S2SV_EndBug> stop_thresh >>= 8 - ( b_width_log2_lookup [ bsize ] + b_height_log2_lookup [ bsize ] ) ; <S2SV_StartBug> stop_thresh_rd = RDCOST ( x -> rdmult , x -> rddiv , 0 , stop_thresh ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! x -> e_mbd . lossless && best_rd < stop_thresh_rd ) { <S2SV_EndBug> do_split = 0 ; do_rect = 0 ; } } } <S2SV_StartBug> if ( ! x -> in_active_map ) { <S2SV_EndBug> do_split = 0 ; do_rect = 0 ; } restore_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; } if ( cpi -> sf . adaptive_motion_search ) store_pred_mv ( x , ctx ) ; sum_rd = 0 ; if ( do_split ) { subsize = get_subsize ( bsize , PARTITION_SPLIT ) ; <S2SV_StartBug> for ( i = 0 ; i < 4 && sum_rd < best_rd ; ++ i ) { <S2SV_EndBug> const int x_idx = ( i & 1 ) * mi_step ; const int y_idx = ( i >> 1 ) * mi_step ; if ( mi_row + y_idx >= cm -> mi_rows || mi_col + x_idx >= cm -> mi_cols ) continue ; <S2SV_StartBug> * get_sb_index ( x , subsize ) = i ; <S2SV_EndBug> if ( cpi -> sf . adaptive_motion_search ) load_pred_mv ( x , ctx ) ; if ( cpi -> sf . adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed ) get_block_context ( x , subsize ) -> pred_interp_filter = ctx -> mic . mbmi . interp_filter ; <S2SV_StartBug> rd_pick_partition ( cpi , tile , tp , mi_row + y_idx , mi_col + x_idx , subsize , <S2SV_EndBug> <S2SV_StartBug> & this_rate , & this_dist , i != 3 , best_rd - sum_rd ) ; <S2SV_EndBug> if ( this_rate == INT_MAX ) { <S2SV_StartBug> sum_rd = INT64_MAX ; <S2SV_EndBug> <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> sum_rate += this_rate ; <S2SV_EndBug> sum_dist += this_dist ; sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; } } if ( sum_rd < best_rd && i == 4 ) { pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> sum_rate += x -> partition_cost [ pl ] [ PARTITION_SPLIT ] ; <S2SV_EndBug> <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_EndBug> if ( sum_rd < best_rd ) { best_rate = sum_rate ; best_dist = sum_dist ; best_rd = sum_rd ; * ( get_sb_partitioning ( x , bsize ) ) = subsize ; } } else { if ( cpi -> sf . less_rectangular_check ) do_rect &= ! partition_none_allowed ; } <S2SV_StartBug> restore_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; <S2SV_EndBug> } <S2SV_StartBug> if ( partition_horz_allowed && do_rect ) { <S2SV_EndBug> <S2SV_StartBug> subsize = get_subsize ( bsize , PARTITION_HORZ ) ; <S2SV_EndBug> * get_sb_index ( x , subsize ) = 0 ; if ( cpi -> sf . adaptive_motion_search ) load_pred_mv ( x , ctx ) ; if ( cpi -> sf . adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed ) <S2SV_StartBug> get_block_context ( x , subsize ) -> pred_interp_filter = <S2SV_EndBug> ctx -> mic . mbmi . interp_filter ; rd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & sum_rate , & sum_dist , subsize , get_block_context ( x , subsize ) , best_rd ) ; sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_StartBug> if ( sum_rd < best_rd && mi_row + mi_step < cm -> mi_rows ) { <S2SV_EndBug> <S2SV_StartBug> update_state ( cpi , get_block_context ( x , subsize ) , mi_row , mi_col , <S2SV_EndBug> subsize , 0 ) ; encode_superblock ( cpi , tp , 0 , mi_row , mi_col , subsize ) ; * get_sb_index ( x , subsize ) = 1 ; if ( cpi -> sf . adaptive_motion_search ) load_pred_mv ( x , ctx ) ; if ( cpi -> sf . adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed ) <S2SV_StartBug> get_block_context ( x , subsize ) -> pred_interp_filter = <S2SV_EndBug> ctx -> mic . mbmi . interp_filter ; <S2SV_StartBug> rd_pick_sb_modes ( cpi , tile , mi_row + mi_step , mi_col , & this_rate , <S2SV_EndBug> & this_dist , subsize , get_block_context ( x , subsize ) , best_rd - sum_rd ) ; if ( this_rate == INT_MAX ) { <S2SV_StartBug> sum_rd = INT64_MAX ; <S2SV_EndBug> } else { <S2SV_StartBug> sum_rate += this_rate ; <S2SV_EndBug> sum_dist += this_dist ; <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_EndBug> } } if ( sum_rd < best_rd ) { pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; sum_rate += x -> partition_cost [ pl ] [ PARTITION_HORZ ] ; sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; if ( sum_rd < best_rd ) { best_rd = sum_rd ; best_rate = sum_rate ; best_dist = sum_dist ; * ( get_sb_partitioning ( x , bsize ) ) = subsize ; } } restore_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; } if ( partition_vert_allowed && do_rect ) { <S2SV_StartBug> subsize = get_subsize ( bsize , PARTITION_VERT ) ; <S2SV_EndBug> * get_sb_index ( x , subsize ) = 0 ; if ( cpi -> sf . adaptive_motion_search ) load_pred_mv ( x , ctx ) ; if ( cpi -> sf . adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed ) <S2SV_StartBug> get_block_context ( x , subsize ) -> pred_interp_filter = <S2SV_EndBug> ctx -> mic . mbmi . interp_filter ; rd_pick_sb_modes ( cpi , tile , mi_row , mi_col , & sum_rate , & sum_dist , subsize , get_block_context ( x , subsize ) , best_rd ) ; sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_StartBug> if ( sum_rd < best_rd && mi_col + mi_step < cm -> mi_cols ) { <S2SV_EndBug> <S2SV_StartBug> update_state ( cpi , get_block_context ( x , subsize ) , mi_row , mi_col , <S2SV_EndBug> subsize , 0 ) ; encode_superblock ( cpi , tp , 0 , mi_row , mi_col , subsize ) ; * get_sb_index ( x , subsize ) = 1 ; if ( cpi -> sf . adaptive_motion_search ) load_pred_mv ( x , ctx ) ; if ( cpi -> sf . adaptive_pred_interp_filter && bsize == BLOCK_8X8 && partition_none_allowed ) <S2SV_StartBug> get_block_context ( x , subsize ) -> pred_interp_filter = <S2SV_EndBug> ctx -> mic . mbmi . interp_filter ; <S2SV_StartBug> rd_pick_sb_modes ( cpi , tile , mi_row , mi_col + mi_step , & this_rate , <S2SV_EndBug> & this_dist , subsize , get_block_context ( x , subsize ) , best_rd - sum_rd ) ; if ( this_rate == INT_MAX ) { <S2SV_StartBug> sum_rd = INT64_MAX ; <S2SV_EndBug> } else { <S2SV_StartBug> sum_rate += this_rate ; <S2SV_EndBug> sum_dist += this_dist ; <S2SV_StartBug> sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; <S2SV_EndBug> } } if ( sum_rd < best_rd ) { pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; sum_rate += x -> partition_cost [ pl ] [ PARTITION_VERT ] ; sum_rd = RDCOST ( x -> rdmult , x -> rddiv , sum_rate , sum_dist ) ; if ( sum_rd < best_rd ) { best_rate = sum_rate ; best_dist = sum_dist ; best_rd = sum_rd ; * ( get_sb_partitioning ( x , bsize ) ) = subsize ; } } restore_context ( cpi , mi_row , mi_col , a , l , sa , sl , bsize ) ; } ( void ) best_rd ; * rate = best_rate ; * dist = best_dist ; <S2SV_StartBug> if ( best_rate < INT_MAX && best_dist < INT64_MAX && do_recon ) { <S2SV_EndBug> int output_enabled = ( bsize == BLOCK_64X64 ) ; <S2SV_StartBug> if ( ( cpi -> oxcf . aq_mode == COMPLEXITY_AQ ) && cm -> seg . update_map ) { <S2SV_EndBug> vp9_select_in_frame_q_segment ( cpi , mi_row , mi_col , output_enabled , <S2SV_StartBug> best_rate ) ; <S2SV_EndBug> } if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) vp9_cyclic_refresh_set_rate_and_dist_sb ( cpi -> cyclic_refresh , best_rate , best_dist ) ; encode_sb ( cpi , tile , tp , mi_row , mi_col , output_enabled , bsize ) ; } if ( bsize == BLOCK_64X64 ) { assert ( tp_orig < * tp ) ; <S2SV_StartBug> assert ( best_rate < INT_MAX ) ; <S2SV_EndBug> <S2SV_StartBug> assert ( best_dist < INT64_MAX ) ; <S2SV_EndBug> } else { assert ( tp_orig == * tp ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , TileDataEnc * tile_data <S2SV_ModEnd> , TOKENEXTRA * <S2SV_ModStart> int mi_row , int mi_col , <S2SV_ModEnd> BLOCK_SIZE bsize , <S2SV_ModStart> BLOCK_SIZE bsize , RD_COST * rd_cost , int64_t best_rd , PC_TREE * pc_tree <S2SV_ModEnd> ) { VP9_COMMON <S2SV_ModStart> -> common ; TileInfo * const tile_info = & tile_data -> tile_info ; <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> * ctx = & pc_tree -> none <S2SV_ModEnd> ; int i <S2SV_ModStart> BLOCK_SIZE subsize ; RD_COST this_rdc , sum_rdc , best_rdc <S2SV_ModEnd> ; int do_split <S2SV_ModStart> . subsampling_y ; BLOCK_SIZE min_size = x -> min_partition_size ; BLOCK_SIZE max_size = x -> max_partition_size ; # if CONFIG_FP_MB_STATS unsigned int src_diff_var = UINT_MAX ; int none_complexity = 0 ; # endif <S2SV_ModStart> * tp_orig ; <S2SV_ModEnd> assert ( num_8x8_blocks_wide_lookup <S2SV_ModStart> [ bsize ] ) ; vp9_rd_cost_init ( & this_rdc ) ; vp9_rd_cost_init ( & sum_rdc ) ; vp9_rd_cost_reset ( & best_rdc ) ; best_rdc . rdcost = best_rd ; set_offsets ( cpi , tile_info , x , mi_row , mi_col , bsize <S2SV_ModStart> bsize == BLOCK_16X16 && cpi -> oxcf . aq_mode ) <S2SV_ModEnd> x -> mb_energy <S2SV_ModStart> bsize ) ; if ( cpi -> sf . cb_partition_search && bsize == BLOCK_16X16 ) { int cb_partition_search_ctrl = ( ( pc_tree -> index == 0 || pc_tree -> index == 3 ) + get_chessboard_index ( cm -> current_video_frame ) ) & 0x1 ; if ( cb_partition_search_ctrl && bsize > min_size && bsize < max_size ) set_partition_range ( cm , xd , mi_row , mi_col , bsize , & min_size , & max_size <S2SV_ModEnd> ) ; } <S2SV_ModStart> ( bsize <= max_size && bsize >= min_size <S2SV_ModEnd> ) ; partition_horz_allowed <S2SV_ModStart> ( bsize <= max_size && bsize > min_size <S2SV_ModEnd> ) || force_horz_split <S2SV_ModStart> ( bsize <= max_size && bsize > min_size <S2SV_ModEnd> ) || force_vert_split <S2SV_ModStart> &= bsize > min_size <S2SV_ModEnd> ; } if <S2SV_ModStart> } save_context ( x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> bsize ) ; # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats ) { set_offsets ( cpi , tile_info , x , mi_row , mi_col , bsize ) ; src_diff_var = get_sby_perpixel_diff_variance ( cpi , & x -> plane [ 0 ] . src , mi_row , mi_col , bsize ) ; } # endif # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats && bsize >= BLOCK_32X32 && do_split && partition_none_allowed && src_diff_var > 4 && cm -> base_qindex < qindex_split_threshold_lookup [ bsize ] ) { int mb_row = mi_row >> 1 ; int mb_col = mi_col >> 1 ; int mb_row_end = MIN ( mb_row + num_16x16_blocks_high_lookup [ bsize ] , cm -> mb_rows ) ; int mb_col_end = MIN ( mb_col + num_16x16_blocks_wide_lookup [ bsize ] , cm -> mb_cols ) ; int r , c ; for ( r = mb_row ; r < mb_row_end ; r ++ ) { for ( c = mb_col ; c < mb_col_end ; c ++ ) { const int mb_index = r * cm -> mb_cols + c ; MOTION_DIRECTION this_mv ; MOTION_DIRECTION right_mv ; MOTION_DIRECTION bottom_mv ; this_mv = get_motion_direction_fp ( cpi -> twopass . this_frame_mb_stats [ mb_index ] ) ; if ( c != mb_col_end - 1 ) { right_mv = get_motion_direction_fp ( cpi -> twopass . this_frame_mb_stats [ mb_index + 1 ] ) ; none_complexity += get_motion_inconsistency ( this_mv , right_mv ) ; } if ( r != mb_row_end - 1 ) { bottom_mv = get_motion_direction_fp ( cpi -> twopass . this_frame_mb_stats [ mb_index + cm -> mb_cols ] ) ; none_complexity += get_motion_inconsistency ( this_mv , bottom_mv ) ; } } } if ( none_complexity > complexity_16x16_blocks_threshold [ bsize ] ) { partition_none_allowed <S2SV_ModEnd> = 0 ; <S2SV_ModStart> = 0 ; } } # endif <S2SV_ModEnd> if ( partition_none_allowed <S2SV_ModStart> ( cpi , tile_data , x , mi_row , mi_col , & this_rdc , bsize , ctx , best_rdc . rdcost ) ; if ( this_rdc . rate <S2SV_ModEnd> != INT_MAX ) <S2SV_ModStart> bsize ) ; this_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> PARTITION_NONE ] ; this_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , this_rdc . rate , this_rdc . dist ) ; } if ( this_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> ) { int64_t <S2SV_ModStart> ) { int64_t dist_breakout_thr = cpi -> sf . partition_search_breakout_dist_thr ; int rate_breakout_thr = cpi -> sf . partition_search_breakout_rate_thr ; best_rdc = this_rdc <S2SV_ModEnd> ; if ( <S2SV_ModStart> >= BLOCK_8X8 ) pc_tree -> partitioning = PARTITION_NONE ; dist_breakout_thr <S2SV_ModEnd> >>= 8 - <S2SV_ModStart> ] ) ; rate_breakout_thr *= num_pels_log2_lookup [ bsize ] ; if ( ! x -> e_mbd . lossless && ( ctx -> skippable && best_rdc . dist < dist_breakout_thr && best_rdc . rate < rate_breakout_thr ) ) { do_split = 0 ; do_rect = 0 ; } # if CONFIG_FP_MB_STATS if ( cpi -> use_fp_mb_stats && do_split != 0 && cm -> base_qindex > qindex_skip_threshold_lookup [ bsize ] ) { int mb_row = mi_row >> 1 ; int mb_col = mi_col >> 1 ; int mb_row_end = MIN ( mb_row + num_16x16_blocks_high_lookup [ bsize ] , cm -> mb_rows ) ; int mb_col_end = MIN ( mb_col + num_16x16_blocks_wide_lookup [ bsize ] , cm -> mb_cols ) ; int r , c ; int skip = 1 ; for ( r = mb_row ; r < mb_row_end ; r ++ ) { for ( c = mb_col ; c < mb_col_end ; c ++ ) { const int mb_index = r * cm -> mb_cols + c <S2SV_ModEnd> ; if ( <S2SV_ModStart> if ( ! ( cpi -> twopass . this_frame_mb_stats [ mb_index ] & FPMB_MOTION_ZERO_MASK ) || ! ( cpi -> twopass . this_frame_mb_stats [ mb_index ] & FPMB_ERROR_SMALL_MASK ) ) { skip = 0 ; break ; } } if ( skip == 0 ) { break ; } } if ( skip ) { if ( src_diff_var == UINT_MAX ) { set_offsets ( cpi , tile_info , x , mi_row , mi_col , bsize ) ; src_diff_var = get_sby_perpixel_diff_variance ( cpi , & x -> plane [ 0 ] . src , mi_row , mi_col , bsize ) ; } if ( src_diff_var < 8 <S2SV_ModEnd> ) { do_split <S2SV_ModStart> } } } # endif } } restore_context ( x , mi_row , mi_col , a , l , sa , sl , bsize ) ; } if ( cpi -> sf . adaptive_motion_search ) store_pred_mv ( x , ctx ) ; if ( do_split ) { subsize = get_subsize ( bsize , PARTITION_SPLIT ) ; if ( bsize == BLOCK_8X8 ) { i = 4 ; if ( cpi -> sf . adaptive_pred_interp_filter && partition_none_allowed ) pc_tree -> leaf_split [ 0 ] -> pred_interp_filter = ctx -> mic . mbmi . interp_filter ; rd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , & sum_rdc , subsize , pc_tree -> leaf_split [ 0 ] , best_rdc . rdcost ) ; if ( sum_rdc . rate == INT_MAX ) sum_rdc . rdcost = INT64_MAX ; } else { <S2SV_ModEnd> for ( i <S2SV_ModStart> < 4 && sum_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> ; ++ i <S2SV_ModStart> ) continue ; if ( cpi -> sf . adaptive_motion_search ) load_pred_mv ( x , ctx ) ; pc_tree -> split [ i ] -> index = i <S2SV_ModEnd> ; rd_pick_partition ( <S2SV_ModStart> ( cpi , td , tile_data <S2SV_ModEnd> , tp , <S2SV_ModStart> subsize , & this_rdc , best_rdc . rdcost - sum_rdc . rdcost , pc_tree -> split [ i ] ) ; if ( this_rdc . rate <S2SV_ModEnd> == INT_MAX ) <S2SV_ModStart> INT_MAX ) { sum_rdc . rdcost <S2SV_ModEnd> = INT64_MAX ; <S2SV_ModStart> = INT64_MAX ; break ; <S2SV_ModStart> } else { sum_rdc . rate += this_rdc . rate ; sum_rdc . dist += this_rdc . dist ; sum_rdc . rdcost += this_rdc . rdcost ; } } } if ( sum_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> && i == <S2SV_ModStart> bsize ) ; sum_rdc . rate += cpi <S2SV_ModEnd> -> partition_cost [ <S2SV_ModStart> PARTITION_SPLIT ] ; sum_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , sum_rdc . rate , sum_rdc . dist ) ; if ( sum_rdc . rdcost < best_rdc . rdcost ) { best_rdc = sum_rdc ; pc_tree -> partitioning = PARTITION_SPLIT <S2SV_ModEnd> ; } } <S2SV_ModStart> } restore_context ( x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> ( partition_horz_allowed && ( do_rect || vp9_active_h_edge ( cpi , mi_row , mi_step ) ) <S2SV_ModEnd> ) { subsize <S2SV_ModStart> , PARTITION_HORZ ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> && partition_none_allowed ) pc_tree -> horizontal [ 0 ] . pred_interp_filter = ctx -> mic . mbmi . interp_filter ; rd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , & sum_rdc , subsize , & pc_tree -> horizontal [ 0 ] , best_rdc . rdcost ) ; if ( sum_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> && mi_row + <S2SV_ModStart> cm -> mi_rows && bsize > BLOCK_8X8 ) { PICK_MODE_CONTEXT * ctx = & pc_tree -> horizontal [ 0 ] ; <S2SV_ModEnd> update_state ( cpi <S2SV_ModStart> ( cpi , td , ctx , mi_row , mi_col , subsize , 0 ) ; encode_superblock ( cpi , td , tp , 0 , mi_row , mi_col , subsize , ctx ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> && partition_none_allowed ) pc_tree -> horizontal [ 1 ] . <S2SV_ModEnd> pred_interp_filter = ctx <S2SV_ModStart> ( cpi , tile_data , x <S2SV_ModEnd> , mi_row + <S2SV_ModStart> mi_col , & this_rdc , subsize , & pc_tree -> horizontal [ 1 ] , best_rdc . rdcost - sum_rdc . rdcost ) ; if ( this_rdc . rate <S2SV_ModEnd> == INT_MAX ) <S2SV_ModStart> INT_MAX ) { sum_rdc . rdcost <S2SV_ModEnd> = INT64_MAX ; <S2SV_ModStart> } else { sum_rdc . rate += this_rdc . rate ; sum_rdc . dist += this_rdc . dist ; sum_rdc . rdcost += this_rdc . rdcost ; } } if ( sum_rdc . rdcost < best_rdc . rdcost ) { pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; sum_rdc . rate += cpi -> partition_cost [ pl ] [ PARTITION_HORZ ] ; sum_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , sum_rdc . rate , sum_rdc . dist ) ; if ( sum_rdc . rdcost < best_rdc . rdcost ) { best_rdc = sum_rdc ; pc_tree -> partitioning = PARTITION_HORZ ; } } restore_context ( x , mi_row , mi_col , a , l , sa , sl , bsize ) ; } if ( partition_vert_allowed && ( do_rect || vp9_active_v_edge ( cpi , mi_col , mi_step ) ) ) { subsize <S2SV_ModEnd> = get_subsize ( <S2SV_ModStart> , PARTITION_VERT ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> && partition_none_allowed ) pc_tree -> vertical [ 0 ] . pred_interp_filter = ctx -> mic . mbmi . interp_filter ; rd_pick_sb_modes ( cpi , tile_data , x , mi_row , mi_col , & sum_rdc , subsize , & pc_tree -> vertical [ 0 ] , best_rdc . rdcost ) ; if ( sum_rdc . rdcost < best_rdc . rdcost <S2SV_ModEnd> && mi_col + <S2SV_ModStart> cm -> mi_cols && bsize > BLOCK_8X8 <S2SV_ModStart> ( cpi , td , & pc_tree -> vertical [ 0 ] , mi_row , mi_col , subsize , 0 ) ; encode_superblock ( cpi , td , tp , 0 , mi_row , mi_col , subsize , & pc_tree -> vertical [ 0 ] ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> && partition_none_allowed ) pc_tree -> vertical [ 1 ] . <S2SV_ModEnd> pred_interp_filter = ctx <S2SV_ModStart> ( cpi , tile_data , x <S2SV_ModEnd> , mi_row , <S2SV_ModStart> mi_step , & this_rdc , subsize , & pc_tree -> vertical [ 1 ] , best_rdc . rdcost - sum_rdc . rdcost ) ; if ( this_rdc . rate <S2SV_ModEnd> == INT_MAX ) <S2SV_ModStart> INT_MAX ) { sum_rdc . rdcost <S2SV_ModEnd> = INT64_MAX ; <S2SV_ModStart> } else { sum_rdc . rate += this_rdc . rate ; sum_rdc . dist += this_rdc . dist ; sum_rdc . rdcost += this_rdc . rdcost ; } } if ( sum_rdc . rdcost < best_rdc . rdcost ) { pl = partition_plane_context ( xd , mi_row , mi_col , bsize ) ; sum_rdc . rate += cpi -> partition_cost [ pl ] [ PARTITION_VERT ] ; sum_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , sum_rdc . rate , sum_rdc . dist ) ; if ( sum_rdc . rdcost < best_rdc . rdcost ) { best_rdc = sum_rdc ; pc_tree -> partitioning = PARTITION_VERT ; } } restore_context ( x , mi_row , mi_col , a , l , sa , sl , bsize ) ; } ( void ) best_rd ; * rd_cost = best_rdc ; if ( best_rdc . rate <S2SV_ModEnd> < INT_MAX && <S2SV_ModStart> < INT_MAX && best_rdc . dist <S2SV_ModEnd> < INT64_MAX && <S2SV_ModStart> < INT64_MAX && pc_tree -> index != 3 <S2SV_ModEnd> ) { int <S2SV_ModStart> BLOCK_64X64 ) ; encode_sb ( cpi , td , tile_info , tp <S2SV_ModEnd> , mi_row , <S2SV_ModStart> , output_enabled , bsize , pc_tree <S2SV_ModEnd> ) ; } <S2SV_ModStart> ; assert ( best_rdc . rate <S2SV_ModEnd> < INT_MAX ) <S2SV_ModStart> ; assert ( best_rdc . dist <S2SV_ModEnd> < INT64_MAX )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11232\n\n```\nCWE-20 static void * etm_setup_aux ( int event_cpu , void * * pages , int nr_pages , bool overwrite ) { int cpu ; cpumask_t * mask ; struct coresight_device * sink ; struct etm_event_data * event_data = NULL ; event_data = alloc_event_data ( event_cpu ) ; if ( ! event_data ) return NULL ; sink = coresight_get_enabled_sink ( true ) ; if ( ! sink ) goto err ; INIT_WORK ( & event_data -> work , free_event_data ) ; mask = & event_data -> mask ; for_each_cpu ( cpu , mask ) { struct coresight_device * csdev ; csdev = per_cpu ( csdev_src , cpu ) ; if ( ! csdev ) goto err ; event_data -> path [ cpu ] = coresight_build_path ( csdev , sink ) ; if ( IS_ERR ( event_data -> path [ cpu ] ) ) goto err ; } if ( ! sink_ops ( sink ) -> alloc_buffer ) goto err ; <S2SV_StartBug> event_data -> snk_config = <S2SV_EndBug> sink_ops ( sink ) -> alloc_buffer ( sink , cpu , pages , nr_pages , overwrite ) ; if ( ! event_data -> snk_config ) goto err ; out : return event_data ; err : etm_free_aux ( event_data ) ; event_data = NULL ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto err ; cpu = cpumask_first ( mask ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static pdf_creator_t * new_creator ( int * n_elements ) { pdf_creator_t * daddy ; static const pdf_creator_t creator_template [ ] = { { \"Title\" , \"\" } , { \"Author\" , \"\" } , { \"Subject\" , \"\" } , { \"Keywords\" , \"\" } , { \"Creator\" , \"\" } , { \"Producer\" , \"\" } , { \"CreationDate\" , \"\" } , { \"ModDate\" , \"\" } , { \"Trapped\" , \"\" } , } ; <S2SV_StartBug> daddy = malloc ( sizeof ( creator_template ) ) ; <S2SV_EndBug> memcpy ( daddy , creator_template , sizeof ( creator_template ) ) ; if ( n_elements ) * n_elements = sizeof ( creator_template ) / sizeof ( creator_template [ 0 ] ) ; return daddy ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; daddy = safe_calloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9763\n\n```\nCWE-119 static grub_err_t find_file ( const char * currpath , grub_fshelp_node_t currroot , grub_fshelp_node_t * currfound , struct grub_fshelp_find_file_closure * c ) { <S2SV_StartBug> # ifndef _MSC_VER <S2SV_EndBug> <S2SV_StartBug> char fpath [ grub_strlen ( currpath ) + 1 ] ; <S2SV_EndBug> # else char * fpath = grub_malloc ( grub_strlen ( currpath ) + 1 ) ; <S2SV_StartBug> # endif <S2SV_EndBug> char * name = fpath ; char * next ; enum grub_fshelp_filetype type = GRUB_FSHELP_DIR ; grub_fshelp_node_t currnode = currroot ; grub_fshelp_node_t oldnode = currroot ; c -> currroot = currroot ; grub_strncpy ( fpath , currpath , grub_strlen ( currpath ) + 1 ) ; while ( * name == '/' ) name ++ ; if ( ! * name ) { <S2SV_StartBug> * currfound = currnode ; <S2SV_EndBug> return 0 ; } for ( ; ; ) { int found ; struct find_file_closure cc ; next = grub_strchr ( name , '/' ) ; if ( next ) { while ( * next == '/' ) * ( next ++ ) = '\\\\0' ; } if ( type != GRUB_FSHELP_DIR ) { free_node ( currnode , c ) ; <S2SV_StartBug> return grub_error ( GRUB_ERR_BAD_FILE_TYPE , \"not<S2SV_blank>a<S2SV_blank>directory\" ) ; <S2SV_EndBug> } cc . name = name ; cc . type = & type ; cc . oldnode = & oldnode ; cc . currnode = & currnode ; found = c -> iterate_dir ( currnode , iterate , & cc ) ; if ( ! found ) { <S2SV_StartBug> if ( grub_errno ) <S2SV_EndBug> <S2SV_StartBug> return grub_errno ; <S2SV_EndBug> break ; } if ( type == GRUB_FSHELP_SYMLINK ) { char * symlink ; if ( ++ ( c -> symlinknest ) == 8 ) { free_node ( currnode , c ) ; free_node ( oldnode , c ) ; <S2SV_StartBug> return grub_error ( GRUB_ERR_SYMLINK_LOOP , <S2SV_EndBug> \"too<S2SV_blank>deep<S2SV_blank>nesting<S2SV_blank>of<S2SV_blank>symlinks\" ) ; } symlink = c -> read_symlink ( currnode ) ; free_node ( currnode , c ) ; if ( ! symlink ) { <S2SV_StartBug> free_node ( oldnode , c ) ; <S2SV_EndBug> return grub_errno ; } if ( symlink [ 0 ] == '/' ) { free_node ( oldnode , c ) ; oldnode = c -> rootnode ; } find_file ( symlink , oldnode , & currnode , c ) ; type = c -> foundtype ; grub_free ( symlink ) ; if ( grub_errno ) { free_node ( oldnode , c ) ; <S2SV_StartBug> return grub_errno ; <S2SV_EndBug> } } free_node ( oldnode , c ) ; if ( ! next || * next == '\\\\0' ) { * currfound = currnode ; c -> foundtype = type ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } name = next ; } <S2SV_StartBug> return grub_error ( GRUB_ERR_FILE_NOT_FOUND , \"file<S2SV_blank>not<S2SV_blank>found\" ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c ) { char * fpath = grub_malloc ( <S2SV_ModEnd> grub_strlen ( currpath <S2SV_ModStart> ) + 1 ) ; char * name = fpath ; char * next ; enum grub_fshelp_filetype type = GRUB_FSHELP_DIR ; grub_fshelp_node_t currnode = currroot ; grub_fshelp_node_t oldnode = currroot ; c -> currroot = currroot ; grub_strncpy ( fpath , currpath , <S2SV_ModEnd> grub_strlen ( currpath <S2SV_ModStart> 1 ) ; <S2SV_ModEnd> while ( * <S2SV_ModStart> currfound = currnode ; free ( fpath ) <S2SV_ModStart> c ) ; free ( fpath ) ; <S2SV_ModStart> ( grub_errno ) { free ( fpath ) ; <S2SV_ModStart> return grub_errno ; } <S2SV_ModStart> c ) ; free ( fpath ) ; <S2SV_ModStart> oldnode , c ) ; free ( fpath <S2SV_ModStart> c ) ; free ( fpath ) ; <S2SV_ModStart> = type ; free ( fpath ) ; <S2SV_ModStart> next ; } free ( fpath ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6420\n\n```\nCWE-416 int wwunpack ( uint8_t * exe , uint32_t exesz , uint8_t * wwsect , struct cli_exe_section * sects , uint16_t scount , uint32_t pe , int desc ) { uint8_t * structs = wwsect + 0x2a1 , * compd , * ccur , * unpd , * ucur , bc ; uint32_t src , srcend , szd , bt , bits ; int error = 0 , i ; cli_dbgmsg ( \"in<S2SV_blank>wwunpack\\\\n\" ) ; while ( 1 ) { if ( ! CLI_ISCONTAINED ( wwsect , sects [ scount ] . rsz , structs , 17 ) ) { cli_dbgmsg ( \"WWPack:<S2SV_blank>Array<S2SV_blank>of<S2SV_blank>structs<S2SV_blank>out<S2SV_blank>of<S2SV_blank>section\\\\n\" ) ; break ; } src = sects [ scount ] . rva - cli_readint32 ( structs ) ; structs += 8 ; szd = cli_readint32 ( structs ) * 4 ; structs += 4 ; srcend = cli_readint32 ( structs ) ; structs += 4 ; unpd = ucur = exe + src + srcend + 4 - szd ; if ( ! szd || ! CLI_ISCONTAINED ( exe , exesz , unpd , szd ) ) { cli_dbgmsg ( \"WWPack:<S2SV_blank>Compressed<S2SV_blank>data<S2SV_blank>out<S2SV_blank>of<S2SV_blank>file\\\\n\" ) ; break ; } cli_dbgmsg ( \"WWP:<S2SV_blank>src:<S2SV_blank>%x,<S2SV_blank>szd:<S2SV_blank>%x,<S2SV_blank>srcend:<S2SV_blank>%x<S2SV_blank>-<S2SV_blank>%x\\\\n\" , src , szd , srcend , srcend + 4 - szd ) ; if ( ! ( compd = cli_malloc ( szd ) ) ) { cli_dbgmsg ( \"WWPack:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>compd\\\\n\" ) ; break ; } memcpy ( compd , unpd , szd ) ; memset ( unpd , - 1 , szd ) ; ccur = compd ; RESEED ; while ( ! error ) { uint32_t backbytes , backsize ; uint8_t saved ; BIT ; if ( ! bits ) { if ( ccur - compd >= szd || ! CLI_ISCONTAINED ( exe , exesz , ucur , 1 ) ) error = 1 ; else * ucur ++ = * ccur ++ ; continue ; } BITS ( 2 ) ; if ( bits == 3 ) { uint8_t shifted , subbed = 31 ; BITS ( 2 ) ; shifted = bits + 5 ; if ( bits >= 2 ) { shifted ++ ; subbed += 0x80 ; } backbytes = ( 1 << shifted ) - subbed ; BITS ( shifted ) ; if ( error || bits == 0x1ff ) break ; backbytes += bits ; if ( ! CLI_ISCONTAINED ( exe , exesz , ucur , 2 ) || ! CLI_ISCONTAINED ( exe , exesz , ucur - backbytes , 2 ) ) { error = 1 ; } else { ucur [ 0 ] = * ( ucur - backbytes ) ; ucur [ 1 ] = * ( ucur - backbytes + 1 ) ; ucur += 2 ; } continue ; } saved = bits ; BITS ( 3 ) ; if ( bits < 6 ) { backbytes = bits ; switch ( bits ) { case 4 : backbytes ++ ; case 3 : BIT ; backbytes += bits ; case 0 : case 1 : case 2 : backbytes += 5 ; break ; case 5 : backbytes = 12 ; break ; } BITS ( backbytes ) ; bits += ( 1 << backbytes ) - 31 ; } else if ( bits == 6 ) { BITS ( 0x0e ) ; bits += 0x1fe1 ; } else { BITS ( 0x0f ) ; bits += 0x5fe1 ; } backbytes = bits ; if ( ! saved ) { BIT ; if ( ! bits ) { BIT ; bits += 5 ; } else { BITS ( 3 ) ; if ( bits ) { bits += 6 ; } else { BITS ( 4 ) ; if ( bits ) { bits += 13 ; } else { uint8_t cnt = 4 ; uint16_t shifted = 0x0d ; do { if ( cnt == 7 ) { cnt = 0x0e ; shifted = 0 ; break ; } shifted = ( ( shifted + 2 ) << 1 ) - 1 ; BIT ; cnt ++ ; } while ( ! bits ) ; BITS ( cnt ) ; bits += shifted ; } } } backsize = bits ; } else { backsize = saved + 2 ; } if ( ! CLI_ISCONTAINED ( exe , exesz , ucur , backsize ) || ! CLI_ISCONTAINED ( exe , exesz , ucur - backbytes , backsize ) ) error = 1 ; else while ( backsize -- ) { * ucur = * ( ucur - backbytes ) ; ucur ++ ; } } free ( compd ) ; if ( error ) { cli_dbgmsg ( \"WWPack:<S2SV_blank>decompression<S2SV_blank>error\\\\n\" ) ; break ; } if ( error || ! * structs ++ ) break ; } if ( ! error ) { if ( pe + 6 > exesz || pe + 7 > exesz || pe + 0x28 > exesz || pe + 0x50 > exesz || pe + 0x14 > exesz ) return CL_EFORMAT ; exe [ pe + 6 ] = ( uint8_t ) scount ; exe [ pe + 7 ] = ( uint8_t ) ( scount >> 8 ) ; <S2SV_StartBug> cli_writeint32 ( & exe [ pe + 0x28 ] , cli_readint32 ( wwsect + 0x295 ) + sects [ scount ] . rva + 0x299 ) ; <S2SV_EndBug> cli_writeint32 ( & exe [ pe + 0x50 ] , cli_readint32 ( & exe [ pe + 0x50 ] ) - sects [ scount ] . vsz ) ; structs = & exe [ ( 0xffff & cli_readint32 ( & exe [ pe + 0x14 ] ) ) + pe + 0x18 ] ; for ( i = 0 ; i < scount ; i ++ ) { if ( ! CLI_ISCONTAINED ( exe , exesz , structs , 0x28 ) ) { cli_dbgmsg ( \"WWPack:<S2SV_blank>structs<S2SV_blank>pointer<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds\\\\n\" ) ; return CL_EFORMAT ; } cli_writeint32 ( structs + 8 , sects [ i ] . vsz ) ; cli_writeint32 ( structs + 12 , sects [ i ] . rva ) ; cli_writeint32 ( structs + 16 , sects [ i ] . vsz ) ; cli_writeint32 ( structs + 20 , sects [ i ] . rva ) ; structs += 0x28 ; } if ( ! CLI_ISCONTAINED ( exe , exesz , structs , 0x28 ) ) { cli_dbgmsg ( \"WWPack:<S2SV_blank>structs<S2SV_blank>pointer<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds\\\\n\" ) ; return CL_EFORMAT ; } memset ( structs , 0 , 0x28 ) ; error = ( uint32_t ) cli_writen ( desc , exe , exesz ) != exesz ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 8 ) ; if ( ! CLI_ISCONTAINED ( wwsect , sects [ scount ] . rsz , wwsect + 0x295 , 4 ) || ! CLI_ISCONTAINED ( wwsect , sects [ scount ] . rsz , wwsect + 0x295 + sects [ scount ] . rva , 4 ) || ! CLI_ISCONTAINED ( wwsect , sects [ scount ] . rsz , wwsect + 0x295 + sects [ scount ] . rva + 0x299 , 4 ) ) { cli_dbgmsg ( \"WWPack:<S2SV_blank>unpack<S2SV_blank>memory<S2SV_blank>address<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\\\\n\" ) ; return CL_EFORMAT ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19767\n\n```\nCWE-416 static int __ext4_expand_extra_isize ( struct inode * inode , unsigned int new_extra_isize , struct ext4_iloc * iloc , handle_t * handle , int * no_expand ) { struct ext4_inode * raw_inode ; struct ext4_xattr_ibody_header * header ; <S2SV_StartBug> int error ; <S2SV_EndBug> raw_inode = ext4_raw_inode ( iloc ) ; header = IHDR ( inode , raw_inode ) ; if ( ! ext4_test_inode_state ( inode , EXT4_STATE_XATTR ) || header -> h_magic != cpu_to_le32 ( EXT4_XATTR_MAGIC ) ) { memset ( ( void * ) raw_inode + EXT4_GOOD_OLD_INODE_SIZE + EXT4_I ( inode ) -> i_extra_isize , 0 , new_extra_isize - EXT4_I ( inode ) -> i_extra_isize ) ; EXT4_I ( inode ) -> i_extra_isize = new_extra_isize ; return 0 ; } error = ext4_expand_extra_isize_ea ( inode , new_extra_isize , raw_inode , handle ) ; if ( error ) { * no_expand = 1 ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * header ; unsigned int inode_size = EXT4_INODE_SIZE ( inode -> i_sb ) ; struct ext4_inode_info * ei = EXT4_I ( inode ) ; int error ; if ( ( EXT4_GOOD_OLD_INODE_SIZE + ei -> i_extra_isize > inode_size ) || ( ei -> i_extra_isize & 3 ) ) { EXT4_ERROR_INODE ( inode , \"bad<S2SV_blank>extra_isize<S2SV_blank>%u<S2SV_blank>(inode<S2SV_blank>size<S2SV_blank>%u)\" , ei -> i_extra_isize , EXT4_INODE_SIZE ( inode -> i_sb ) ) ; return - EFSCORRUPTED ; } if ( ( new_extra_isize < ei -> i_extra_isize ) || ( new_extra_isize < 4 ) || ( new_extra_isize > inode_size - EXT4_GOOD_OLD_INODE_SIZE ) ) return - EINVAL <S2SV_ModEnd> ; raw_inode =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14395\n\n```\nCWE-369 static int mov_write_audio_tag ( AVFormatContext * s , AVIOContext * pb , MOVMuxContext * mov , MOVTrack * track ) { int64_t pos = avio_tell ( pb ) ; int version = 0 ; uint32_t tag = track -> tag ; if ( track -> mode == MODE_MOV ) { <S2SV_StartBug> if ( track -> timescale > UINT16_MAX ) { <S2SV_EndBug> if ( mov_get_lpcm_flags ( track -> par -> codec_id ) ) tag = AV_RL32 ( \"lpcm\" ) ; version = 2 ; } else if ( track -> audio_vbr || mov_pcm_le_gt16 ( track -> par -> codec_id ) || mov_pcm_be_gt16 ( track -> par -> codec_id ) || track -> par -> codec_id == AV_CODEC_ID_ADPCM_MS || track -> par -> codec_id == AV_CODEC_ID_ADPCM_IMA_WAV || track -> par -> codec_id == AV_CODEC_ID_QDM2 ) { version = 1 ; } } avio_wb32 ( pb , 0 ) ; if ( mov -> encryption_scheme != MOV_ENC_NONE ) { ffio_wfourcc ( pb , \"enca\" ) ; } else { avio_wl32 ( pb , tag ) ; } avio_wb32 ( pb , 0 ) ; avio_wb16 ( pb , 0 ) ; avio_wb16 ( pb , 1 ) ; avio_wb16 ( pb , version ) ; avio_wb16 ( pb , 0 ) ; avio_wb32 ( pb , 0 ) ; if ( version == 2 ) { avio_wb16 ( pb , 3 ) ; avio_wb16 ( pb , 16 ) ; avio_wb16 ( pb , 0xfffe ) ; avio_wb16 ( pb , 0 ) ; avio_wb32 ( pb , 0x00010000 ) ; avio_wb32 ( pb , 72 ) ; avio_wb64 ( pb , av_double2int ( track -> par -> sample_rate ) ) ; avio_wb32 ( pb , track -> par -> channels ) ; avio_wb32 ( pb , 0x7F000000 ) ; avio_wb32 ( pb , av_get_bits_per_sample ( track -> par -> codec_id ) ) ; avio_wb32 ( pb , mov_get_lpcm_flags ( track -> par -> codec_id ) ) ; avio_wb32 ( pb , track -> sample_size ) ; avio_wb32 ( pb , get_samples_per_packet ( track ) ) ; } else { if ( track -> mode == MODE_MOV ) { avio_wb16 ( pb , track -> par -> channels ) ; if ( track -> par -> codec_id == AV_CODEC_ID_PCM_U8 || track -> par -> codec_id == AV_CODEC_ID_PCM_S8 ) avio_wb16 ( pb , 8 ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_ADPCM_G726 ) avio_wb16 ( pb , track -> par -> bits_per_coded_sample ) ; else avio_wb16 ( pb , 16 ) ; avio_wb16 ( pb , track -> audio_vbr ? - 2 : 0 ) ; } else { if ( track -> par -> codec_id == AV_CODEC_ID_FLAC || track -> par -> codec_id == AV_CODEC_ID_OPUS ) { avio_wb16 ( pb , track -> par -> channels ) ; } else { avio_wb16 ( pb , 2 ) ; } if ( track -> par -> codec_id == AV_CODEC_ID_FLAC ) { avio_wb16 ( pb , track -> par -> bits_per_raw_sample ) ; } else { avio_wb16 ( pb , 16 ) ; } avio_wb16 ( pb , 0 ) ; } avio_wb16 ( pb , 0 ) ; if ( track -> par -> codec_id == AV_CODEC_ID_OPUS ) avio_wb16 ( pb , 48000 ) ; else avio_wb16 ( pb , track -> par -> sample_rate <= UINT16_MAX ? track -> par -> sample_rate : 0 ) ; avio_wb16 ( pb , 0 ) ; } if ( version == 1 ) { if ( mov_pcm_le_gt16 ( track -> par -> codec_id ) || mov_pcm_be_gt16 ( track -> par -> codec_id ) ) avio_wb32 ( pb , 1 ) ; else avio_wb32 ( pb , track -> par -> frame_size ) ; avio_wb32 ( pb , track -> sample_size / track -> par -> channels ) ; avio_wb32 ( pb , track -> sample_size ) ; avio_wb32 ( pb , 2 ) ; } if ( track -> mode == MODE_MOV && ( track -> par -> codec_id == AV_CODEC_ID_AAC || track -> par -> codec_id == AV_CODEC_ID_AC3 || track -> par -> codec_id == AV_CODEC_ID_EAC3 || track -> par -> codec_id == AV_CODEC_ID_AMR_NB || track -> par -> codec_id == AV_CODEC_ID_ALAC || track -> par -> codec_id == AV_CODEC_ID_ADPCM_MS || track -> par -> codec_id == AV_CODEC_ID_ADPCM_IMA_WAV || track -> par -> codec_id == AV_CODEC_ID_QDM2 || ( mov_pcm_le_gt16 ( track -> par -> codec_id ) && version == 1 ) || ( mov_pcm_be_gt16 ( track -> par -> codec_id ) && version == 1 ) ) ) mov_write_wave_tag ( s , pb , track ) ; else if ( track -> tag == MKTAG ( 'm' , 'p' , '4' , 'a' ) ) mov_write_esds_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_AMR_NB ) mov_write_amr_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_AC3 ) mov_write_ac3_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_EAC3 ) mov_write_eac3_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_ALAC ) mov_write_extradata_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_WMAPRO ) mov_write_wfex_tag ( s , pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_FLAC ) mov_write_dfla_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_OPUS ) mov_write_dops_tag ( pb , track ) ; else if ( track -> vos_len > 0 ) mov_write_glbl_tag ( pb , track ) ; if ( track -> mode == MODE_MOV && track -> par -> codec_type == AVMEDIA_TYPE_AUDIO ) mov_write_chan_tag ( s , pb , track ) ; if ( mov -> encryption_scheme != MOV_ENC_NONE ) { ff_mov_cenc_write_sinf_tag ( track , pb , mov -> encryption_kid ) ; } return update_size ( pb , pos ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> timescale > UINT16_MAX || ! track -> par -> channels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static long _syscall ( long num , long arg1 , long arg2 , long arg3 , long arg4 , long arg5 , long arg6 ) { long ret = - 1 ; oe_errno = 0 ; switch ( num ) { # if defined ( OE_SYS_creat ) case OE_SYS_creat : { const char * pathname = ( const char * ) arg1 ; oe_mode_t mode = ( oe_mode_t ) arg2 ; int flags = ( OE_O_CREAT | OE_O_WRONLY | OE_O_TRUNC ) ; ret = oe_open ( pathname , flags , mode ) ; if ( oe_errno == OE_ENOENT ) { oe_errno = OE_ENOSYS ; goto done ; } goto done ; } # endif # if defined ( OE_SYS_open ) case OE_SYS_open : { const char * pathname = ( const char * ) arg1 ; int flags = ( int ) arg2 ; uint32_t mode = ( uint32_t ) arg3 ; ret = oe_open ( pathname , flags , mode ) ; if ( ret < 0 && oe_errno == OE_ENOENT ) goto done ; goto done ; } # endif case OE_SYS_openat : { int dirfd = ( int ) arg1 ; const char * pathname = ( const char * ) arg2 ; int flags = ( int ) arg3 ; uint32_t mode = ( uint32_t ) arg4 ; if ( dirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } ret = oe_open ( pathname , flags , mode ) ; if ( ret < 0 && oe_errno == OE_ENOENT ) goto done ; goto done ; } case OE_SYS_lseek : { int fd = ( int ) arg1 ; ssize_t off = ( ssize_t ) arg2 ; int whence = ( int ) arg3 ; ret = oe_lseek ( fd , off , whence ) ; goto done ; } case OE_SYS_pread64 : { const int fd = ( int ) arg1 ; void * const buf = ( void * ) arg2 ; const size_t count = ( size_t ) arg3 ; const oe_off_t offset = ( oe_off_t ) arg4 ; ret = oe_pread ( fd , buf , count , offset ) ; goto done ; } case OE_SYS_pwrite64 : { const int fd = ( int ) arg1 ; const void * const buf = ( void * ) arg2 ; const size_t count = ( size_t ) arg3 ; const oe_off_t offset = ( oe_off_t ) arg4 ; ret = oe_pwrite ( fd , buf , count , offset ) ; goto done ; } case OE_SYS_readv : { int fd = ( int ) arg1 ; const struct oe_iovec * iov = ( const struct oe_iovec * ) arg2 ; int iovcnt = ( int ) arg3 ; ret = oe_readv ( fd , iov , iovcnt ) ; goto done ; } case OE_SYS_writev : { int fd = ( int ) arg1 ; const struct oe_iovec * iov = ( const struct oe_iovec * ) arg2 ; int iovcnt = ( int ) arg3 ; ret = oe_writev ( fd , iov , iovcnt ) ; goto done ; } case OE_SYS_read : { int fd = ( int ) arg1 ; void * buf = ( void * ) arg2 ; size_t count = ( size_t ) arg3 ; ret = oe_read ( fd , buf , count ) ; goto done ; } case OE_SYS_write : { int fd = ( int ) arg1 ; const void * buf = ( void * ) arg2 ; size_t count = ( size_t ) arg3 ; ret = oe_write ( fd , buf , count ) ; goto done ; } case OE_SYS_close : { int fd = ( int ) arg1 ; ret = oe_close ( fd ) ; goto done ; } case OE_SYS_dup : { int fd = ( int ) arg1 ; ret = oe_dup ( fd ) ; goto done ; } case OE_SYS_flock : { int fd = ( int ) arg1 ; int operation = ( int ) arg2 ; ret = oe_flock ( fd , operation ) ; goto done ; } case OE_SYS_fsync : { const int fd = ( int ) arg1 ; ret = oe_fsync ( fd ) ; goto done ; } case OE_SYS_fdatasync : { const int fd = ( int ) arg1 ; ret = oe_fdatasync ( fd ) ; goto done ; } # if defined ( OE_SYS_dup2 ) case OE_SYS_dup2 : { int oldfd = ( int ) arg1 ; int newfd = ( int ) arg2 ; ret = oe_dup2 ( oldfd , newfd ) ; goto done ; } # endif case OE_SYS_dup3 : { int oldfd = ( int ) arg1 ; int newfd = ( int ) arg2 ; int flags = ( int ) arg3 ; if ( flags != 0 ) { oe_errno = OE_EINVAL ; goto done ; } ret = oe_dup2 ( oldfd , newfd ) ; goto done ; } # if defined ( OE_SYS_stat ) case OE_SYS_stat : { const char * pathname = ( const char * ) arg1 ; struct oe_stat_t * buf = ( struct oe_stat_t * ) arg2 ; ret = oe_stat ( pathname , buf ) ; goto done ; } # endif case OE_SYS_newfstatat : { int dirfd = ( int ) arg1 ; const char * pathname = ( const char * ) arg2 ; struct oe_stat_t * buf = ( struct oe_stat_t * ) arg3 ; int flags = ( int ) arg4 ; if ( dirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } if ( flags != 0 ) { oe_errno = OE_EINVAL ; goto done ; } ret = oe_stat ( pathname , buf ) ; goto done ; } case OE_SYS_fstat : { const int fd = ( int ) arg1 ; struct oe_stat_t * const buf = ( struct oe_stat_t * ) arg2 ; ret = oe_fstat ( fd , buf ) ; goto done ; } # if defined ( OE_SYS_link ) case OE_SYS_link : { const char * oldpath = ( const char * ) arg1 ; const char * newpath = ( const char * ) arg2 ; ret = oe_link ( oldpath , newpath ) ; goto done ; } # endif case OE_SYS_linkat : { int olddirfd = ( int ) arg1 ; const char * oldpath = ( const char * ) arg2 ; int newdirfd = ( int ) arg3 ; const char * newpath = ( const char * ) arg4 ; int flags = ( int ) arg5 ; if ( olddirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } if ( newdirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } if ( flags != 0 ) { oe_errno = OE_EINVAL ; goto done ; } ret = oe_link ( oldpath , newpath ) ; goto done ; } # if defined ( OE_SYS_unlink ) case OE_SYS_unlink : { const char * pathname = ( const char * ) arg1 ; ret = oe_unlink ( pathname ) ; goto done ; } # endif case OE_SYS_unlinkat : { int dirfd = ( int ) arg1 ; const char * pathname = ( const char * ) arg2 ; int flags = ( int ) arg3 ; if ( dirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } if ( flags != OE_AT_REMOVEDIR && flags != 0 ) { oe_errno = OE_EINVAL ; goto done ; } if ( flags == OE_AT_REMOVEDIR ) ret = oe_rmdir ( pathname ) ; else ret = oe_unlink ( pathname ) ; goto done ; } # if defined ( OE_SYS_rename ) case OE_SYS_rename : { const char * oldpath = ( const char * ) arg1 ; const char * newpath = ( const char * ) arg2 ; ret = oe_rename ( oldpath , newpath ) ; goto done ; } # endif case OE_SYS_renameat : { int olddirfd = ( int ) arg1 ; const char * oldpath = ( const char * ) arg2 ; int newdirfd = ( int ) arg3 ; const char * newpath = ( const char * ) arg4 ; int flags = ( int ) arg5 ; if ( olddirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } if ( newdirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } if ( flags != 0 ) { oe_errno = OE_EINVAL ; goto done ; } ret = oe_rename ( oldpath , newpath ) ; goto done ; } case OE_SYS_truncate : { const char * path = ( const char * ) arg1 ; ssize_t length = ( ssize_t ) arg2 ; ret = oe_truncate ( path , length ) ; goto done ; } # if defined ( OE_SYS_mkdir ) case OE_SYS_mkdir : { const char * pathname = ( const char * ) arg1 ; uint32_t mode = ( uint32_t ) arg2 ; ret = oe_mkdir ( pathname , mode ) ; goto done ; } # endif case OE_SYS_mkdirat : { int dirfd = ( int ) arg1 ; const char * pathname = ( const char * ) arg2 ; uint32_t mode = ( uint32_t ) arg3 ; if ( dirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } ret = oe_mkdir ( pathname , mode ) ; goto done ; } # if defined ( OE_SYS_rmdir ) case OE_SYS_rmdir : { const char * pathname = ( const char * ) arg1 ; ret = oe_rmdir ( pathname ) ; goto done ; } # endif # if defined ( OE_SYS_access ) case OE_SYS_access : { const char * pathname = ( const char * ) arg1 ; int mode = ( int ) arg2 ; ret = oe_access ( pathname , mode ) ; goto done ; } # endif case OE_SYS_faccessat : { int dirfd = ( int ) arg1 ; const char * pathname = ( const char * ) arg2 ; int mode = ( int ) arg3 ; int flags = ( int ) arg4 ; if ( dirfd != OE_AT_FDCWD ) { oe_errno = OE_EBADF ; goto done ; } if ( flags != 0 ) { oe_errno = OE_EINVAL ; goto done ; } ret = oe_access ( pathname , mode ) ; goto done ; } case OE_SYS_getdents64 : { unsigned int fd = ( unsigned int ) arg1 ; struct oe_dirent * ent = ( struct oe_dirent * ) arg2 ; unsigned int count = ( unsigned int ) arg3 ; ret = oe_getdents64 ( fd , ent , count ) ; goto done ; } case OE_SYS_ioctl : { int fd = ( int ) arg1 ; unsigned long request = ( unsigned long ) arg2 ; long p1 = arg3 ; long p2 = arg4 ; long p3 = arg5 ; long p4 = arg6 ; ret = oe_ioctl ( fd , request , p1 , p2 , p3 , p4 ) ; goto done ; } case OE_SYS_fcntl : { int fd = ( int ) arg1 ; int cmd = ( int ) arg2 ; uint64_t arg = ( uint64_t ) arg3 ; ret = oe_fcntl ( fd , cmd , arg ) ; goto done ; } case OE_SYS_mount : { const char * source = ( const char * ) arg1 ; const char * target = ( const char * ) arg2 ; const char * fstype = ( const char * ) arg3 ; unsigned long flags = ( unsigned long ) arg4 ; void * data = ( void * ) arg5 ; ret = oe_mount ( source , target , fstype , flags , data ) ; goto done ; } case OE_SYS_umount2 : { const char * target = ( const char * ) arg1 ; int flags = ( int ) arg2 ; ( void ) flags ; ret = oe_umount ( target ) ; goto done ; } case OE_SYS_getcwd : { char * buf = ( char * ) arg1 ; size_t size = ( size_t ) arg2 ; if ( ! oe_getcwd ( buf , size ) ) { ret = - 1 ; } else { ret = ( long ) size ; } goto done ; } case OE_SYS_chdir : { char * path = ( char * ) arg1 ; ret = oe_chdir ( path ) ; goto done ; } case OE_SYS_socket : { int domain = ( int ) arg1 ; int type = ( int ) arg2 ; int protocol = ( int ) arg3 ; ret = oe_socket ( domain , type , protocol ) ; goto done ; } case OE_SYS_connect : { int sd = ( int ) arg1 ; const struct oe_sockaddr * addr = ( const struct oe_sockaddr * ) arg2 ; oe_socklen_t addrlen = ( oe_socklen_t ) arg3 ; ret = oe_connect ( sd , addr , addrlen ) ; goto done ; } case OE_SYS_setsockopt : { int sockfd = ( int ) arg1 ; int level = ( int ) arg2 ; int optname = ( int ) arg3 ; void * optval = ( void * ) arg4 ; oe_socklen_t optlen = ( oe_socklen_t ) arg5 ; ret = oe_setsockopt ( sockfd , level , optname , optval , optlen ) ; goto done ; } case OE_SYS_getsockopt : { int sockfd = ( int ) arg1 ; int level = ( int ) arg2 ; int optname = ( int ) arg3 ; void * optval = ( void * ) arg4 ; oe_socklen_t * optlen = ( oe_socklen_t * ) arg5 ; ret = oe_getsockopt ( sockfd , level , optname , optval , optlen ) ; goto done ; } case OE_SYS_getpeername : { int sockfd = ( int ) arg1 ; struct sockaddr * addr = ( struct sockaddr * ) arg2 ; oe_socklen_t * addrlen = ( oe_socklen_t * ) arg3 ; ret = oe_getpeername ( sockfd , ( struct oe_sockaddr * ) addr , addrlen ) ; goto done ; } case OE_SYS_getsockname : { int sockfd = ( int ) arg1 ; struct sockaddr * addr = ( struct sockaddr * ) arg2 ; oe_socklen_t * addrlen = ( oe_socklen_t * ) arg3 ; ret = oe_getsockname ( sockfd , ( struct oe_sockaddr * ) addr , addrlen ) ; goto done ; } case OE_SYS_bind : { int sockfd = ( int ) arg1 ; struct oe_sockaddr * addr = ( struct oe_sockaddr * ) arg2 ; oe_socklen_t addrlen = ( oe_socklen_t ) arg3 ; ret = oe_bind ( sockfd , addr , addrlen ) ; goto done ; } case OE_SYS_listen : { int sockfd = ( int ) arg1 ; int backlog = ( int ) arg2 ; ret = oe_listen ( sockfd , backlog ) ; goto done ; } case OE_SYS_accept : { int sockfd = ( int ) arg1 ; struct oe_sockaddr * addr = ( struct oe_sockaddr * ) arg2 ; oe_socklen_t * addrlen = ( oe_socklen_t * ) arg3 ; ret = oe_accept ( sockfd , addr , addrlen ) ; goto done ; } case OE_SYS_sendto : { int sockfd = ( int ) arg1 ; const void * buf = ( void * ) arg2 ; size_t len = ( size_t ) arg3 ; int flags = ( int ) arg4 ; const struct oe_sockaddr * dest_add = ( const struct oe_sockaddr * ) arg5 ; oe_socklen_t addrlen = ( oe_socklen_t ) arg6 ; ret = oe_sendto ( sockfd , buf , len , flags , dest_add , addrlen ) ; goto done ; } case OE_SYS_recvfrom : { int sockfd = ( int ) arg1 ; void * buf = ( void * ) arg2 ; size_t len = ( size_t ) arg3 ; int flags = ( int ) arg4 ; <S2SV_StartBug> const struct oe_sockaddr * dest_add = <S2SV_EndBug> <S2SV_StartBug> ( const struct oe_sockaddr * ) arg5 ; <S2SV_EndBug> oe_socklen_t * addrlen = ( oe_socklen_t * ) arg6 ; ret = oe_recvfrom ( sockfd , buf , len , flags , dest_add , addrlen ) ; goto done ; } case OE_SYS_sendmsg : { int sockfd = ( int ) arg1 ; struct msghdr * buf = ( struct msghdr * ) arg2 ; int flags = ( int ) arg3 ; ret = oe_sendmsg ( sockfd , ( struct oe_msghdr * ) buf , flags ) ; goto done ; } case OE_SYS_recvmsg : { int sockfd = ( int ) arg1 ; struct msghdr * buf = ( struct msghdr * ) arg2 ; int flags = ( int ) arg3 ; ret = oe_recvmsg ( sockfd , ( struct oe_msghdr * ) buf , flags ) ; goto done ; } case OE_SYS_socketpair : { int domain = ( int ) arg1 ; int type = ( int ) arg2 ; int protocol = ( int ) arg3 ; int * sv = ( int * ) arg4 ; ret = oe_socketpair ( domain , type , protocol , sv ) ; goto done ; } case OE_SYS_shutdown : { int sockfd = ( int ) arg1 ; int how = ( int ) arg2 ; ret = oe_shutdown ( sockfd , how ) ; goto done ; } case OE_SYS_uname : { struct oe_utsname * buf = ( struct oe_utsname * ) arg1 ; ret = oe_uname ( buf ) ; goto done ; } # if defined ( OE_SYS_select ) case OE_SYS_select : { int nfds = ( int ) arg1 ; oe_fd_set * readfds = ( oe_fd_set * ) arg2 ; oe_fd_set * writefds = ( oe_fd_set * ) arg3 ; oe_fd_set * efds = ( oe_fd_set * ) arg4 ; struct oe_timeval * timeout = ( struct oe_timeval * ) arg5 ; ret = oe_select ( nfds , readfds , writefds , efds , timeout ) ; goto done ; } # endif case OE_SYS_pselect6 : { int nfds = ( int ) arg1 ; oe_fd_set * readfds = ( oe_fd_set * ) arg2 ; oe_fd_set * writefds = ( oe_fd_set * ) arg3 ; oe_fd_set * exceptfds = ( oe_fd_set * ) arg4 ; struct oe_timespec * ts = ( struct oe_timespec * ) arg5 ; struct oe_timeval buf ; struct oe_timeval * tv = NULL ; if ( ts ) { tv = & buf ; tv -> tv_sec = ts -> tv_sec ; tv -> tv_usec = ts -> tv_nsec / 1000 ; } ret = oe_select ( nfds , readfds , writefds , exceptfds , tv ) ; goto done ; } # if defined ( OE_SYS_poll ) case OE_SYS_poll : { struct oe_pollfd * fds = ( struct oe_pollfd * ) arg1 ; oe_nfds_t nfds = ( oe_nfds_t ) arg2 ; int millis = ( int ) arg3 ; ret = oe_poll ( fds , nfds , millis ) ; goto done ; } # endif case OE_SYS_ppoll : { struct oe_pollfd * fds = ( struct oe_pollfd * ) arg1 ; oe_nfds_t nfds = ( oe_nfds_t ) arg2 ; struct oe_timespec * ts = ( struct oe_timespec * ) arg3 ; void * sigmask = ( void * ) arg4 ; int timeout = - 1 ; if ( sigmask != NULL ) { oe_errno = OE_EINVAL ; goto done ; } if ( ts ) { int64_t mul ; int64_t div ; int64_t sum ; if ( oe_safe_mul_s64 ( ts -> tv_sec , 1000 , & mul ) != OE_OK ) { oe_errno = OE_EINVAL ; goto done ; } div = ts -> tv_nsec / 1000000 ; if ( oe_safe_add_s64 ( mul , div , & sum ) != OE_OK ) { oe_errno = OE_EINVAL ; goto done ; } if ( sum < OE_INT_MIN || sum > OE_INT_MAX ) { oe_errno = OE_EINVAL ; goto done ; } timeout = ( int ) sum ; } ret = oe_poll ( fds , nfds , timeout ) ; goto done ; } # if defined ( OE_SYS_epoll_create ) case OE_SYS_epoll_create : { int size = ( int ) arg1 ; ret = oe_epoll_create ( size ) ; goto done ; } # endif case OE_SYS_epoll_create1 : { int flags = ( int ) arg1 ; ret = oe_epoll_create1 ( flags ) ; goto done ; } # if defined ( OE_SYS_epoll_wait ) case OE_SYS_epoll_wait : { int epfd = ( int ) arg1 ; struct oe_epoll_event * events = ( struct oe_epoll_event * ) arg2 ; int maxevents = ( int ) arg3 ; int timeout = ( int ) arg4 ; ret = oe_epoll_wait ( epfd , events , maxevents , timeout ) ; goto done ; } # endif case OE_SYS_epoll_pwait : { int epfd = ( int ) arg1 ; struct oe_epoll_event * events = ( struct oe_epoll_event * ) arg2 ; int maxevents = ( int ) arg3 ; int timeout = ( int ) arg4 ; const oe_sigset_t * sigmask = ( const oe_sigset_t * ) arg5 ; ret = oe_epoll_pwait ( epfd , events , maxevents , timeout , sigmask ) ; goto done ; } case OE_SYS_epoll_ctl : { int epfd = ( int ) arg1 ; int op = ( int ) arg2 ; int fd = ( int ) arg3 ; struct oe_epoll_event * event = ( struct oe_epoll_event * ) arg4 ; ret = oe_epoll_ctl ( epfd , op , fd , event ) ; goto done ; } case OE_SYS_exit_group : { ret = 0 ; goto done ; } case OE_SYS_exit : { int status = ( int ) arg1 ; oe_exit ( status ) ; goto done ; } case OE_SYS_getpid : { ret = ( long ) oe_getpid ( ) ; goto done ; } case OE_SYS_getuid : { ret = ( long ) oe_getuid ( ) ; goto done ; } case OE_SYS_geteuid : { ret = ( long ) oe_geteuid ( ) ; goto done ; } case OE_SYS_getgid : { ret = ( long ) oe_getgid ( ) ; goto done ; } case OE_SYS_getpgid : { int pid = ( int ) arg1 ; ret = ( long ) oe_getpgid ( pid ) ; goto done ; } case OE_SYS_getgroups : { int size = ( int ) arg1 ; oe_gid_t * list = ( oe_gid_t * ) arg2 ; ret = ( long ) oe_getgroups ( size , list ) ; goto done ; } case OE_SYS_getegid : { ret = ( long ) oe_getegid ( ) ; goto done ; } case OE_SYS_getppid : { ret = ( long ) oe_getppid ( ) ; goto done ; } # if defined ( OE_SYS_getpgrp ) case OE_SYS_getpgrp : { ret = ( long ) oe_getpgrp ( ) ; goto done ; } # endif case OE_SYS_nanosleep : { struct oe_timespec * req = ( struct oe_timespec * ) arg1 ; struct oe_timespec * rem = ( struct oe_timespec * ) arg2 ; ret = ( long ) oe_nanosleep ( req , rem ) ; goto done ; } default : { oe_errno = OE_ENOSYS ; OE_TRACE_WARNING ( \"syscall<S2SV_blank>num=%ld<S2SV_blank>not<S2SV_blank>handled\" , num ) ; goto done ; } } done : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) arg4 ; <S2SV_ModEnd> struct oe_sockaddr * <S2SV_ModStart> * dest_add = ( <S2SV_ModEnd> struct oe_sockaddr *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * delete_policy_2_svc ( dpol_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } prime_arg = arg -> name ; if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_DELETE , NULL , NULL ) ) { log_unauth ( \"kadm5_delete_policy\" , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_DELETE ; } else { ret . code = kadm5_delete_policy ( ( void * ) handle , arg -> name ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_delete_policy\" , ( ( prime_arg == NULL ) ? \"(null)\" : prime_arg ) , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> ) ; } exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7294\n\n```\nCWE-20 static void ikev2_parent_outI1_continue ( struct pluto_crypto_req_cont * pcrc , struct pluto_crypto_req * r , err_t ugh ) { struct ke_continuation * ke = ( struct ke_continuation * ) pcrc ; struct msg_digest * md = ke -> md ; struct state * const st = md -> st ; stf_status e ; DBG ( DBG_CONTROLMORE , DBG_log ( \"ikev2<S2SV_blank>parent<S2SV_blank>outI1:<S2SV_blank>calculated<S2SV_blank>ke+nonce,<S2SV_blank>sending<S2SV_blank>I1\" ) ) ; if ( st == NULL ) { loglog ( RC_LOG_SERIOUS , \"%s:<S2SV_blank>Request<S2SV_blank>was<S2SV_blank>disconnected<S2SV_blank>from<S2SV_blank>state\" , __FUNCTION__ ) ; if ( ke -> md ) release_md ( ke -> md ) ; return ; } passert ( ugh == NULL ) ; passert ( cur_state == NULL ) ; passert ( st != NULL ) ; passert ( st -> st_suspended_md == ke -> md ) ; set_suspended ( st , NULL ) ; set_cur_state ( st ) ; st -> st_calculating = FALSE ; e = ikev2_parent_outI1_tail ( pcrc , r ) ; if ( ke -> md != NULL ) { complete_v2_state_transition ( & ke -> md , e ) ; if ( ke -> md ) release_md ( ke -> md ) ; } reset_cur_state ( ) ; reset_globals ( ) ; <S2SV_StartBug> passert ( GLOBALS_ARE_RESET ( ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1848\n\n```\nCWE-20 static struct block_device * ext3_blkdev_get ( dev_t dev , struct super_block * sb ) { struct block_device * bdev ; char b [ BDEVNAME_SIZE ] ; bdev = blkdev_get_by_dev ( dev , FMODE_READ | FMODE_WRITE | FMODE_EXCL , sb ) ; if ( IS_ERR ( bdev ) ) goto fail ; return bdev ; fail : <S2SV_StartBug> ext3_msg ( sb , \"error:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>journal<S2SV_blank>device<S2SV_blank>%s:<S2SV_blank>%ld\" , <S2SV_EndBug> __bdevname ( dev , b ) , PTR_ERR ( bdev ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sb , KERN_ERR ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5336\n\n```\nCWE-20 int mk_request_error ( int http_status , struct client_session * cs , struct session_request * sr ) { int ret , fd ; mk_ptr_t message , * page = 0 ; struct error_page * entry ; struct mk_list * head ; struct file_info finfo ; mk_header_set_http_status ( sr , http_status ) ; if ( http_status != MK_CLIENT_LENGTH_REQUIRED && http_status != MK_CLIENT_BAD_REQUEST && http_status != MK_CLIENT_REQUEST_ENTITY_TOO_LARGE ) { mk_list_foreach ( head , & sr -> host_conf -> error_pages ) { entry = mk_list_entry ( head , struct error_page , _head ) ; if ( entry -> status != http_status ) { continue ; } ret = mk_file_get_info ( entry -> real_path , & finfo ) ; if ( ret == - 1 ) { break ; } fd = open ( entry -> real_path , config -> open_flags ) ; if ( fd == - 1 ) { break ; } sr -> fd_file = fd ; <S2SV_StartBug> sr -> bytes_to_send = finfo . size ; <S2SV_EndBug> sr -> headers . content_length = finfo . size ; sr -> headers . real_length = finfo . size ; memcpy ( & sr -> file_info , & finfo , sizeof ( struct file_info ) ) ; mk_header_send ( cs -> socket , cs , sr ) ; return mk_http_send_file ( cs , sr ) ; } } mk_ptr_reset ( & message ) ; switch ( http_status ) { case MK_CLIENT_BAD_REQUEST : page = mk_request_set_default_page ( \"Bad<S2SV_blank>Request\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_CLIENT_FORBIDDEN : page = mk_request_set_default_page ( \"Forbidden\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_CLIENT_NOT_FOUND : mk_string_build ( & message . data , & message . len , \"The<S2SV_blank>requested<S2SV_blank>URL<S2SV_blank>was<S2SV_blank>not<S2SV_blank>found<S2SV_blank>on<S2SV_blank>this<S2SV_blank>server.\" ) ; page = mk_request_set_default_page ( \"Not<S2SV_blank>Found\" , message , sr -> host_conf -> host_signature ) ; mk_ptr_free ( & message ) ; break ; case MK_CLIENT_REQUEST_ENTITY_TOO_LARGE : mk_string_build ( & message . data , & message . len , \"The<S2SV_blank>request<S2SV_blank>entity<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.\" ) ; page = mk_request_set_default_page ( \"Entity<S2SV_blank>too<S2SV_blank>large\" , message , sr -> host_conf -> host_signature ) ; mk_ptr_free ( & message ) ; break ; case MK_CLIENT_METHOD_NOT_ALLOWED : page = mk_request_set_default_page ( \"Method<S2SV_blank>Not<S2SV_blank>Allowed\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_CLIENT_REQUEST_TIMEOUT : case MK_CLIENT_LENGTH_REQUIRED : break ; case MK_SERVER_NOT_IMPLEMENTED : page = mk_request_set_default_page ( \"Method<S2SV_blank>Not<S2SV_blank>Implemented\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_SERVER_INTERNAL_ERROR : page = mk_request_set_default_page ( \"Internal<S2SV_blank>Server<S2SV_blank>Error\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_SERVER_HTTP_VERSION_UNSUP : mk_ptr_reset ( & message ) ; page = mk_request_set_default_page ( \"HTTP<S2SV_blank>Version<S2SV_blank>Not<S2SV_blank>Supported\" , message , sr -> host_conf -> host_signature ) ; break ; } if ( page ) { sr -> headers . content_length = page -> len ; } sr -> headers . location = NULL ; sr -> headers . cgi = SH_NOCGI ; sr -> headers . pconnections_left = 0 ; sr -> headers . last_modified = - 1 ; if ( ! page ) { mk_ptr_reset ( & sr -> headers . content_type ) ; } else { mk_ptr_set ( & sr -> headers . content_type , \"text/html\\\\r\\\\n\" ) ; } mk_header_send ( cs -> socket , cs , sr ) ; if ( page ) { if ( sr -> method != MK_HTTP_METHOD_HEAD ) mk_socket_send ( cs -> socket , page -> data , page -> len ) ; mk_ptr_free ( page ) ; mk_mem_free ( page ) ; } mk_server_cork_flag ( cs -> socket , TCP_CORK_OFF ) ; return EXIT_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sr -> fd_is_fdt = MK_FALSE ; sr ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2237\n\n```\nCWE-119 static int key_notify_policy_flush ( const struct km_event * c ) { struct sk_buff * skb_out ; struct sadb_msg * hdr ; skb_out = alloc_skb ( sizeof ( struct sadb_msg ) + 16 , GFP_ATOMIC ) ; if ( ! skb_out ) return - ENOBUFS ; hdr = ( struct sadb_msg * ) skb_put ( skb_out , sizeof ( struct sadb_msg ) ) ; hdr -> sadb_msg_type = SADB_X_SPDFLUSH ; hdr -> sadb_msg_seq = c -> seq ; hdr -> sadb_msg_pid = c -> portid ; hdr -> sadb_msg_version = PF_KEY_V2 ; hdr -> sadb_msg_errno = ( uint8_t ) 0 ; <S2SV_StartBug> hdr -> sadb_msg_len = ( sizeof ( struct sadb_msg ) / sizeof ( uint64_t ) ) ; <S2SV_EndBug> pfkey_broadcast ( skb_out , GFP_ATOMIC , BROADCAST_ALL , NULL , c -> net ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; hdr -> sadb_msg_satype = SADB_SATYPE_UNSPEC ; hdr ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16526\n\n```\nCWE-119 void uwbd_stop ( struct uwb_rc * rc ) <S2SV_StartBug> { <S2SV_EndBug> kthread_stop ( rc -> uwbd . task ) ; uwbd_flush ( rc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc ) { if ( rc -> uwbd . task )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 static int sgi_clock_set ( clockid_t clockid , struct timespec * tp ) { u64 nsec ; <S2SV_StartBug> u64 rem ; <S2SV_EndBug> nsec = rtc_time ( ) * sgi_clock_period ; <S2SV_StartBug> sgi_clock_offset . tv_sec = tp -> tv_sec - div_long_long_rem ( nsec , NSEC_PER_SEC , & rem ) ; <S2SV_EndBug> if ( rem <= tp -> tv_nsec ) sgi_clock_offset . tv_nsec = tp -> tv_sec - rem ; else { sgi_clock_offset . tv_nsec = tp -> tv_sec + NSEC_PER_SEC - rem ; sgi_clock_offset . tv_sec -- ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u64 nsec ; u32 <S2SV_ModEnd> rem ; nsec <S2SV_ModStart> -> tv_sec - div_u64_rem <S2SV_ModEnd> ( nsec ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int check_best_zero_mv ( const VP9_COMP * cpi , const uint8_t mode_context [ MAX_REF_FRAMES ] , int_mv frame_mv [ MB_MODE_COUNT ] [ MAX_REF_FRAMES ] , <S2SV_StartBug> int disable_inter_mode_mask , int this_mode , int ref_frame , <S2SV_EndBug> int second_ref_frame ) { if ( ! ( disable_inter_mode_mask & ( 1 << INTER_OFFSET ( ZEROMV ) ) ) && ( this_mode == NEARMV || this_mode == NEARESTMV || this_mode == ZEROMV ) && frame_mv [ this_mode ] [ ref_frame ] . as_int == 0 && ( second_ref_frame == NONE || <S2SV_StartBug> frame_mv [ this_mode ] [ second_ref_frame ] . as_int == 0 ) ) { <S2SV_EndBug> <S2SV_StartBug> int rfc = mode_context [ ref_frame ] ; <S2SV_EndBug> int c1 = cost_mv_ref ( cpi , NEARMV , rfc ) ; int c2 = cost_mv_ref ( cpi , NEARESTMV , rfc ) ; int c3 = cost_mv_ref ( cpi , ZEROMV , rfc ) ; if ( this_mode == NEARMV ) { if ( c1 > c3 ) return 0 ; } else if ( this_mode == NEARESTMV ) { if ( c2 > c3 ) return 0 ; } else { assert ( this_mode == ZEROMV ) ; <S2SV_StartBug> if ( second_ref_frame == NONE ) { <S2SV_EndBug> <S2SV_StartBug> if ( ( c3 >= c2 && frame_mv [ NEARESTMV ] [ ref_frame ] . as_int == 0 ) || <S2SV_EndBug> <S2SV_StartBug> ( c3 >= c1 && frame_mv [ NEARMV ] [ ref_frame ] . as_int == 0 ) ) <S2SV_EndBug> return 0 ; } else { <S2SV_StartBug> if ( ( c3 >= c2 && frame_mv [ NEARESTMV ] [ ref_frame ] . as_int == 0 && <S2SV_EndBug> frame_mv [ NEARESTMV ] [ second_ref_frame ] . as_int == 0 ) || <S2SV_StartBug> ( c3 >= c1 && frame_mv [ NEARMV ] [ ref_frame ] . as_int == 0 && <S2SV_EndBug> frame_mv [ NEARMV ] [ second_ref_frame ] . as_int == 0 ) ) return 0 ; } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MAX_REF_FRAMES ] , int this_mode , const MV_REFERENCE_FRAME ref_frames [ 2 ] ) { if ( ( this_mode == NEARMV || this_mode == NEARESTMV || this_mode == ZEROMV ) && frame_mv [ this_mode ] [ ref_frames [ 0 ] ] . as_int == 0 && ( ref_frames [ 1 ] <S2SV_ModEnd> == NONE || <S2SV_ModStart> this_mode ] [ ref_frames [ 1 ] <S2SV_ModEnd> ] . as_int <S2SV_ModStart> = mode_context [ ref_frames [ 0 ] <S2SV_ModEnd> ] ; int <S2SV_ModStart> ; if ( ref_frames [ 1 ] <S2SV_ModEnd> == NONE ) <S2SV_ModStart> NEARESTMV ] [ ref_frames [ 0 ] <S2SV_ModEnd> ] . as_int <S2SV_ModStart> NEARMV ] [ ref_frames [ 0 ] <S2SV_ModEnd> ] . as_int <S2SV_ModStart> NEARESTMV ] [ ref_frames [ 0 ] ] . as_int == 0 && frame_mv [ NEARESTMV ] [ ref_frames [ 1 ] <S2SV_ModEnd> ] . as_int <S2SV_ModStart> NEARMV ] [ ref_frames [ 0 ] ] . as_int == 0 && frame_mv [ NEARMV ] [ ref_frames [ 1 ] <S2SV_ModEnd> ] . as_int\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 int MSG_ReadBits ( msg_t * msg , int bits ) { int value ; int get ; qboolean sgn ; int i , nbits ; <S2SV_StartBug> value = 0 ; <S2SV_EndBug> if ( bits < 0 ) { bits = - bits ; sgn = qtrue ; } else { sgn = qfalse ; } <S2SV_StartBug> if ( msg -> oob ) { <S2SV_EndBug> if ( bits == 8 ) { value = msg -> data [ msg -> readcount ] ; msg -> readcount += 1 ; msg -> bit += 8 ; } else if ( bits == 16 ) { short temp ; CopyLittleShort ( & temp , & msg -> data [ msg -> readcount ] ) ; value = temp ; msg -> readcount += 2 ; msg -> bit += 16 ; } else if ( bits == 32 ) { CopyLittleLong ( & value , & msg -> data [ msg -> readcount ] ) ; msg -> readcount += 4 ; msg -> bit += 32 ; } else Com_Error ( ERR_DROP , \"can\\'t<S2SV_blank>read<S2SV_blank>%d<S2SV_blank>bits\" , bits ) ; } else { nbits = 0 ; if ( bits & 7 ) { <S2SV_StartBug> nbits = bits & 7 ; <S2SV_EndBug> for ( i = 0 ; i < nbits ; i ++ ) { value |= ( Huff_getBit ( msg -> data , & msg -> bit ) << i ) ; } bits = bits - nbits ; } if ( bits ) { for ( i = 0 ; i < bits ; i += 8 ) { <S2SV_StartBug> Huff_offsetReceive ( msgHuff . decompressor . tree , & get , msg -> data , & msg -> bit ) ; <S2SV_EndBug> <S2SV_StartBug> value |= ( get << ( i + nbits ) ) ; <S2SV_EndBug> } } msg -> readcount = ( msg -> bit >> 3 ) + 1 ; } if ( sgn && bits > 0 && bits < 32 ) { if ( value & ( 1 << ( bits - 1 ) ) ) { value |= - 1 ^ ( ( 1 << bits ) - 1 ) ; } } return value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , nbits ; if ( msg -> readcount > msg -> cursize ) { return 0 ; } <S2SV_ModStart> oob ) { if ( msg -> readcount + ( bits >> 3 ) > msg -> cursize ) { msg -> readcount = msg -> cursize + 1 ; return 0 ; } <S2SV_ModStart> & 7 ; if ( msg -> bit + nbits > msg -> cursize << 3 ) { msg -> readcount = msg -> cursize + 1 ; return 0 ; } <S2SV_ModStart> msg -> bit , msg -> cursize << 3 <S2SV_ModStart> ) ) ; if ( msg -> bit > msg -> cursize << 3 ) { msg -> readcount = msg -> cursize + 1 ; return 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14976\n\n```\nCWE-200 <S2SV_StartBug> dictionary * iniparser_load ( const char * ininame ) <S2SV_EndBug> { FILE * in ; char line [ ASCIILINESZ + 1 ] ; char section [ ASCIILINESZ + 1 ] ; char key [ ASCIILINESZ + 1 ] ; char tmp [ ( ASCIILINESZ * 2 ) + 1 ] ; char val [ ASCIILINESZ + 1 ] ; int last = 0 ; int len ; int lineno = 0 ; int errs = 0 ; dictionary * dict ; if ( ( in = fopen ( ininame , \"r\" ) ) == NULL ) { fprintf ( stderr , \"iniparser:<S2SV_blank>cannot<S2SV_blank>open<S2SV_blank>%s\\\\n\" , ininame ) ; return NULL ; } dict = dictionary_new ( 0 ) ; if ( ! dict ) { fclose ( in ) ; return NULL ; } memset ( line , 0 , ASCIILINESZ ) ; memset ( section , 0 , ASCIILINESZ ) ; memset ( key , 0 , ASCIILINESZ ) ; memset ( val , 0 , ASCIILINESZ ) ; last = 0 ; while ( fgets ( line + last , ASCIILINESZ - last , in ) != NULL ) { lineno ++ ; len = ( int ) strlen ( line ) - 1 ; if ( len == 0 ) continue ; if ( line [ len ] != '\\\\n' && ! feof ( in ) ) { fprintf ( stderr , \"iniparser:<S2SV_blank>input<S2SV_blank>line<S2SV_blank>too<S2SV_blank>long<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>(%d)\\\\n\" , ininame , lineno ) ; dictionary_del ( dict ) ; fclose ( in ) ; return NULL ; } while ( ( len >= 0 ) && ( ( line [ len ] == '\\\\n' ) || ( isspace ( line [ len ] ) ) ) ) { line [ len ] = 0 ; len -- ; } if ( len < 0 ) { len = 0 ; } if ( line [ len ] == '\\\\\\\\' ) { last = len ; continue ; } else { last = 0 ; } switch ( iniparser_line ( line , section , key , val ) ) { case LINE_EMPTY : case LINE_COMMENT : break ; case LINE_SECTION : errs = dictionary_set ( dict , section , NULL ) ; break ; case LINE_VALUE : sprintf ( tmp , \"%s:%s\" , section , key ) ; errs = dictionary_set ( dict , tmp , val ) ; break ; case LINE_ERROR : <S2SV_StartBug> fprintf ( stderr , \"iniparser:<S2SV_blank>syntax<S2SV_blank>error<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>(%d):\\\\n\" , <S2SV_EndBug> ininame , lineno ) ; <S2SV_StartBug> fprintf ( stderr , \"-><S2SV_blank>%s\\\\n\" , line ) ; <S2SV_EndBug> errs ++ ; break ; default : break ; } memset ( line , 0 , ASCIILINESZ ) ; last = 0 ; if ( errs < 0 ) { fprintf ( stderr , \"iniparser:<S2SV_blank>memory<S2SV_blank>allocation<S2SV_blank>failure\\\\n\" ) ; break ; } } if ( errs ) { dictionary_del ( dict ) ; dict = NULL ; } fclose ( in ) ; return dict ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * ininame , load_options options <S2SV_ModStart> case LINE_ERROR : if ( options & HIDE_ERRORED_LINE_CONTENT ) { <S2SV_ModStart> ( stderr , \"iniparser:<S2SV_blank>syntax<S2SV_blank>error<S2SV_blank>in<S2SV_blank>%s<S2SV_blank>(%d)\\\\n\" , ininame , lineno ) ; } else { fprintf ( stderr , <S2SV_ModStart> line ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 static void finish_object ( struct object * obj , <S2SV_StartBug> struct strbuf * path , const char * name , <S2SV_EndBug> void * cb_data ) { struct rev_list_info * info = cb_data ; if ( obj -> type == OBJ_BLOB && ! has_object_file ( & obj -> oid ) ) die ( \"missing<S2SV_blank>blob<S2SV_blank>object<S2SV_blank>\\'%s\\'\" , oid_to_hex ( & obj -> oid ) ) ; if ( info -> revs -> verify_objects && ! obj -> parsed && obj -> type != OBJ_COMMIT ) parse_object ( obj -> oid . hash ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13025\n\n```\nCWE-125 static int mobility_opt_print ( netdissect_options * ndo , const u_char * bp , const unsigned len ) { unsigned i , optlen ; for ( i = 0 ; i < len ; i += optlen ) { ND_TCHECK ( bp [ i ] ) ; if ( bp [ i ] == IP6MOPT_PAD1 ) optlen = 1 ; else { if ( i + 1 < len ) { ND_TCHECK ( bp [ i + 1 ] ) ; optlen = bp [ i + 1 ] + 2 ; } else goto trunc ; } if ( i + optlen > len ) goto trunc ; ND_TCHECK ( bp [ i + optlen ] ) ; switch ( bp [ i ] ) { case IP6MOPT_PAD1 : ND_PRINT ( ( ndo , \"(pad1)\" ) ) ; break ; case IP6MOPT_PADN : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(padn:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(padn)\" ) ) ; break ; case IP6MOPT_REFRESH : if ( len - i < IP6MOPT_REFRESH_MINLEN ) { ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ; ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>%u)\" , EXTRACT_16BITS ( & bp [ i + 2 ] ) << 2 ) ) ; break ; case IP6MOPT_ALTCOA : if ( len - i < IP6MOPT_ALTCOA_MINLEN ) { ND_PRINT ( ( ndo , \"(altcoa:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"(alt-CoA:<S2SV_blank>%s)\" , ip6addr_string ( ndo , & bp [ i + 2 ] ) ) ) ; <S2SV_EndBug> break ; case IP6MOPT_NONCEID : if ( len - i < IP6MOPT_NONCEID_MINLEN ) { ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ; ND_TCHECK_16BITS ( & bp [ i + 4 ] ) ; ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>ho=0x%04x<S2SV_blank>co=0x%04x)\" , EXTRACT_16BITS ( & bp [ i + 2 ] ) , EXTRACT_16BITS ( & bp [ i + 4 ] ) ) ) ; break ; case IP6MOPT_AUTH : if ( len - i < IP6MOPT_AUTH_MINLEN ) { ND_PRINT ( ( ndo , \"(auth:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(auth)\" ) ) ; break ; default : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(sopt_type<S2SV_blank>%u:<S2SV_blank>trunc)\" , bp [ i ] ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(type-0x%02x:<S2SV_blank>len=%u)\" , bp [ i ] , bp [ i + 1 ] ) ) ; break ; } } return 0 ; trunc : return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> trunc ; } ND_TCHECK_128BITS ( & bp [ i + 2 ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6537\n\n```\nCWE-200 static int copy_to_user_tmpl ( struct xfrm_policy * xp , struct sk_buff * skb ) { struct xfrm_user_tmpl vec [ XFRM_MAX_DEPTH ] ; int i ; if ( xp -> xfrm_nr == 0 ) return 0 ; for ( i = 0 ; i < xp -> xfrm_nr ; i ++ ) { struct xfrm_user_tmpl * up = & vec [ i ] ; struct xfrm_tmpl * kp = & xp -> xfrm_vec [ i ] ; <S2SV_StartBug> memcpy ( & up -> id , & kp -> id , sizeof ( up -> id ) ) ; <S2SV_EndBug> up -> family = kp -> encap_family ; memcpy ( & up -> saddr , & kp -> saddr , sizeof ( up -> saddr ) ) ; up -> reqid = kp -> reqid ; up -> mode = kp -> mode ; up -> share = kp -> share ; up -> optional = kp -> optional ; up -> aalgos = kp -> aalgos ; up -> ealgos = kp -> ealgos ; up -> calgos = kp -> calgos ; } return nla_put ( skb , XFRMA_TMPL , sizeof ( struct xfrm_user_tmpl ) * xp -> xfrm_nr , vec ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ] ; memset ( up , 0 , sizeof ( * up ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-522(凭证保护不足)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-5260\n\n```\nCWE-522 static void credential_write_item ( FILE * fp , const char * key , const char * value ) { if ( ! value ) return ; <S2SV_StartBug> fprintf ( fp , \"%s=%s\\\\n\" , key , value ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; if ( strchr ( value , '\\\\n' ) ) die ( \"credential<S2SV_blank>value<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>contains<S2SV_blank>newline\" , key ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9114\n\n```\nCWE-77 static int parse_token ( char * * name , char * * value , char * * cp ) { char * end ; if ( ! name || ! value || ! cp ) return - BLKID_ERR_PARAM ; if ( ! ( * value = strchr ( * cp , '=' ) ) ) return 0 ; * * value = '\\\\0' ; * name = strip_line ( * cp ) ; * value = skip_over_blank ( * value + 1 ) ; if ( * * value == \\'\"\\' ) { <S2SV_StartBug> end = strchr ( * value + 1 , \\'\"\\' ) ; <S2SV_EndBug> if ( ! end ) { DBG ( READ , ul_debug ( \"unbalanced<S2SV_blank>quotes<S2SV_blank>at:<S2SV_blank>%s\" , * value ) ) ; * cp = * value ; return - BLKID_ERR_CACHE ; } ( * value ) ++ ; * end = '\\\\0' ; <S2SV_StartBug> end ++ ; <S2SV_EndBug> } else { end = skip_over_word ( * value ) ; if ( * end ) { * end = '\\\\0' ; end ++ ; } } * cp = end ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \\'\"\\' ) { char * p = end = <S2SV_ModEnd> * value + <S2SV_ModStart> value + 1 ; while ( * p ) { if ( * p == '\\\\\\\\' ) { p ++ ; * end = * p ; } else { * end = * p ; if ( * p == \\'\"\\' ) break ; } p ++ ; end ++ ; } if ( * end != \\'\"\\' <S2SV_ModEnd> ) { DBG <S2SV_ModStart> '\\\\0' ; end = ++ p <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 <S2SV_StartBug> static const char * parse_string ( cJSON * item , const char * str ) <S2SV_EndBug> { <S2SV_StartBug> const char * ptr = str + 1 ; <S2SV_EndBug> char * ptr2 ; char * out ; int len = 0 ; unsigned uc , uc2 ; if ( * str != \\'\\\\\"\\' ) { <S2SV_StartBug> ep = str ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> } <S2SV_StartBug> while ( * ptr != \\'\\\\\"\\' && * ptr && ++ len ) <S2SV_EndBug> <S2SV_StartBug> if ( * ptr ++ == '\\\\\\\\' ) <S2SV_EndBug> <S2SV_StartBug> ptr ++ ; <S2SV_EndBug> <S2SV_StartBug> if ( ! ( out = ( char * ) cJSON_malloc ( len + 1 ) ) ) <S2SV_EndBug> return 0 ; ptr = str + 1 ; ptr2 = out ; <S2SV_StartBug> while ( * ptr != \\'\\\\\"\\' && * ptr ) { <S2SV_EndBug> if ( * ptr != '\\\\\\\\' ) * ptr2 ++ = * ptr ++ ; else { ptr ++ ; switch ( * ptr ) { case 'b' : * ptr2 ++ = '\\\\b' ; break ; case 'f' : * ptr2 ++ = '\\\\f' ; break ; case 'n' : * ptr2 ++ = '\\\\n' ; break ; case 'r' : * ptr2 ++ = '\\\\r' ; break ; case 't' : * ptr2 ++ = '\\\\t' ; break ; case 'u' : <S2SV_StartBug> sscanf ( ptr + 1 , \"%4x\" , & uc ) ; <S2SV_EndBug> <S2SV_StartBug> ptr += 4 ; <S2SV_EndBug> if ( ( uc >= 0xDC00 && uc <= 0xDFFF ) || uc == 0 ) <S2SV_StartBug> break ; <S2SV_EndBug> <S2SV_StartBug> if ( uc >= 0xD800 && uc <= 0xDBFF ) { <S2SV_EndBug> if ( ptr [ 1 ] != '\\\\\\\\' || ptr [ 2 ] != 'u' ) <S2SV_StartBug> break ; <S2SV_EndBug> <S2SV_StartBug> sscanf ( ptr + 3 , \"%4x\" , & uc2 ) ; <S2SV_EndBug> ptr += 6 ; if ( uc2 < 0xDC00 || uc2 > 0xDFFF ) <S2SV_StartBug> break ; <S2SV_EndBug> <S2SV_StartBug> uc = 0x10000 | ( ( uc & 0x3FF ) << 10 ) | ( uc2 & 0x3FF ) ; <S2SV_EndBug> } len = 4 ; if ( uc < 0x80 ) <S2SV_StartBug> len = 1 ; <S2SV_EndBug> else if ( uc < 0x800 ) len = 2 ; else if ( uc < 0x10000 ) len = 3 ; ptr2 += len ; switch ( len ) { case 4 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 3 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 2 : * -- ptr2 = ( ( uc | 0x80 ) & 0xBF ) ; uc >>= 6 ; case 1 : * -- ptr2 = ( uc | firstByteMark [ len ] ) ; } ptr2 += len ; break ; default : * ptr2 ++ = * ptr ; break ; } <S2SV_StartBug> ++ ptr ; <S2SV_EndBug> } } * ptr2 = 0 ; if ( * ptr == \\'\\\\\"\\' ) <S2SV_StartBug> ++ ptr ; <S2SV_EndBug> item -> valuestring = out ; item -> type = cJSON_String ; return ptr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * str , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * * ep ) { const char * ptr = str + 1 , * end_ptr = str + 1 ; char * ptr2 ; char * <S2SV_ModEnd> out ; int <S2SV_ModStart> \\'\\\\\"\\' ) { * <S2SV_ModStart> = str ; return 0 ; <S2SV_ModEnd> } while ( <S2SV_ModStart> while ( * end_ptr <S2SV_ModEnd> != \\'\\\\\"\\' && <S2SV_ModStart> \\'\\\\\"\\' && * end_ptr <S2SV_ModEnd> && ++ len <S2SV_ModStart> ++ len ) if ( * end_ptr <S2SV_ModEnd> ++ == '\\\\\\\\' <S2SV_ModStart> == '\\\\\\\\' ) end_ptr ++ ; out = ( char * ) cJSON_malloc ( len + 1 ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> if ( ! out ) return 0 ; item -> valuestring <S2SV_ModEnd> = out ; <S2SV_ModStart> = out ; item -> type = cJSON_String ; ptr = str + 1 ; ptr2 = out ; while ( ptr < end_ptr ) <S2SV_ModEnd> { if ( <S2SV_ModStart> case 'u' : uc = parse_hex4 ( ptr + 1 ) ; <S2SV_ModEnd> ptr += 4 <S2SV_ModStart> += 4 ; if ( ptr >= end_ptr ) { * ep = str ; return 0 ; } <S2SV_ModStart> == 0 ) { * ep = str ; return 0 ; } <S2SV_ModEnd> if ( uc <S2SV_ModStart> <= 0xDBFF ) { if ( ptr + 6 > end_ptr ) { * ep = str ; return 0 ; } <S2SV_ModEnd> if ( ptr <S2SV_ModStart> != 'u' ) { * ep = str ; return 0 ; } uc2 = parse_hex4 <S2SV_ModEnd> ( ptr + <S2SV_ModStart> ptr + 3 ) ; <S2SV_ModEnd> ptr += 6 <S2SV_ModStart> > 0xDFFF ) { * ep = str ; return 0 ; } <S2SV_ModEnd> uc = 0x10000 <S2SV_ModStart> uc = 0x10000 + ( <S2SV_ModEnd> ( ( uc <S2SV_ModStart> & 0x3FF ) ) <S2SV_ModStart> < 0x80 ) len = 1 ; <S2SV_ModEnd> else if ( <S2SV_ModStart> break ; } ptr ++ <S2SV_ModEnd> ; } } <S2SV_ModStart> == \\'\\\\\"\\' ) ptr ++ <S2SV_ModEnd> ; return ptr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_diamond_search_sadx4 ( MACROBLOCK * x , BLOCK * b , BLOCKD * d , int_mv * ref_mv , int_mv * best_mv , int search_param , int sad_per_bit , int * num00 , vp8_variance_fn_ptr_t * fn_ptr , int * mvcost [ 2 ] , int_mv * center_mv ) { int i , j , step ; unsigned char * what = ( * ( b -> base_src ) + b -> src ) ; int what_stride = b -> src_stride ; unsigned char * in_what ; int pre_stride = x -> e_mbd . pre . y_stride ; unsigned char * base_pre = x -> e_mbd . pre . y_buffer ; int in_what_stride = pre_stride ; unsigned char * best_address ; int tot_steps ; int_mv this_mv ; unsigned int bestsad ; unsigned int thissad ; int best_site = 0 ; int last_site = 0 ; int ref_row ; int ref_col ; int this_row_offset ; int this_col_offset ; search_site * ss ; unsigned char * check_here ; int * mvsadcost [ 2 ] ; int_mv fcenter_mv ; mvsadcost [ 0 ] = x -> mvsadcost [ 0 ] ; mvsadcost [ 1 ] = x -> mvsadcost [ 1 ] ; fcenter_mv . as_mv . row = center_mv -> as_mv . row >> 3 ; fcenter_mv . as_mv . col = center_mv -> as_mv . col >> 3 ; vp8_clamp_mv ( ref_mv , x -> mv_col_min , x -> mv_col_max , x -> mv_row_min , x -> mv_row_max ) ; ref_row = ref_mv -> as_mv . row ; ref_col = ref_mv -> as_mv . col ; * num00 = 0 ; best_mv -> as_mv . row = ref_row ; best_mv -> as_mv . col = ref_col ; in_what = ( unsigned char * ) ( base_pre + d -> offset + ( ref_row * pre_stride ) + ref_col ) ; best_address = in_what ; <S2SV_StartBug> bestsad = fn_ptr -> sdf ( what , what_stride , in_what , in_what_stride , UINT_MAX ) <S2SV_EndBug> + mvsad_err_cost ( best_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; ss = & x -> ss [ search_param * x -> searches_per_step ] ; tot_steps = ( x -> ss_count / x -> searches_per_step ) - search_param ; i = 1 ; for ( step = 0 ; step < tot_steps ; step ++ ) { int all_in = 1 , t ; all_in &= ( ( best_mv -> as_mv . row + ss [ i ] . mv . row ) > x -> mv_row_min ) ; all_in &= ( ( best_mv -> as_mv . row + ss [ i + 1 ] . mv . row ) < x -> mv_row_max ) ; all_in &= ( ( best_mv -> as_mv . col + ss [ i + 2 ] . mv . col ) > x -> mv_col_min ) ; all_in &= ( ( best_mv -> as_mv . col + ss [ i + 3 ] . mv . col ) < x -> mv_col_max ) ; if ( all_in ) { unsigned int sad_array [ 4 ] ; for ( j = 0 ; j < x -> searches_per_step ; j += 4 ) { const unsigned char * block_offset [ 4 ] ; for ( t = 0 ; t < 4 ; t ++ ) block_offset [ t ] = ss [ i + t ] . offset + best_address ; fn_ptr -> sdx4df ( what , what_stride , block_offset , in_what_stride , sad_array ) ; for ( t = 0 ; t < 4 ; t ++ , i ++ ) { if ( sad_array [ t ] < bestsad ) { this_mv . as_mv . row = best_mv -> as_mv . row + ss [ i ] . mv . row ; this_mv . as_mv . col = best_mv -> as_mv . col + ss [ i ] . mv . col ; sad_array [ t ] += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( sad_array [ t ] < bestsad ) { bestsad = sad_array [ t ] ; best_site = i ; } } } } } else { for ( j = 0 ; j < x -> searches_per_step ; j ++ ) { this_row_offset = best_mv -> as_mv . row + ss [ i ] . mv . row ; this_col_offset = best_mv -> as_mv . col + ss [ i ] . mv . col ; if ( ( this_col_offset > x -> mv_col_min ) && ( this_col_offset < x -> mv_col_max ) && ( this_row_offset > x -> mv_row_min ) && ( this_row_offset < x -> mv_row_max ) ) { check_here = ss [ i ] . offset + best_address ; <S2SV_StartBug> thissad = fn_ptr -> sdf ( what , what_stride , check_here , in_what_stride , bestsad ) ; <S2SV_EndBug> if ( thissad < bestsad ) { this_mv . as_mv . row = this_row_offset ; this_mv . as_mv . col = this_col_offset ; thissad += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; if ( thissad < bestsad ) { bestsad = thissad ; best_site = i ; } } } i ++ ; } } if ( best_site != last_site ) { best_mv -> as_mv . row += ss [ best_site ] . mv . row ; best_mv -> as_mv . col += ss [ best_site ] . mv . col ; best_address += ss [ best_site ] . offset ; last_site = best_site ; } else if ( best_address == in_what ) ( * num00 ) ++ ; } this_mv . as_mv . row = best_mv -> as_mv . row * 8 ; this_mv . as_mv . col = best_mv -> as_mv . col * 8 ; return fn_ptr -> vf ( what , what_stride , best_address , in_what_stride , & thissad ) + mv_err_cost ( & this_mv , center_mv , mvcost , x -> errorperbit ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> in_what , in_what_stride <S2SV_ModEnd> ) + mvsad_err_cost <S2SV_ModStart> check_here , in_what_stride <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int adjust_ptr_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , const struct bpf_reg_state * ptr_reg , const struct bpf_reg_state * off_reg ) { struct bpf_verifier_state * vstate = env -> cur_state ; struct bpf_func_state * state = vstate -> frame [ vstate -> curframe ] ; struct bpf_reg_state * regs = state -> regs , * dst_reg ; bool known = tnum_is_const ( off_reg -> var_off ) ; s64 smin_val = off_reg -> smin_value , smax_val = off_reg -> smax_value , smin_ptr = ptr_reg -> smin_value , smax_ptr = ptr_reg -> smax_value ; u64 umin_val = off_reg -> umin_value , umax_val = off_reg -> umax_value , umin_ptr = ptr_reg -> umin_value , umax_ptr = ptr_reg -> umax_value ; u32 dst = insn -> dst_reg , src = insn -> src_reg ; <S2SV_StartBug> u8 opcode = BPF_OP ( insn -> code ) ; <S2SV_EndBug> dst_reg = & regs [ dst ] ; if ( ( known && ( smin_val != smax_val || umin_val != umax_val ) ) || smin_val > smax_val || umin_val > umax_val ) { __mark_reg_unknown ( dst_reg ) ; return 0 ; } if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { verbose ( env , \"R%d<S2SV_blank>32-bit<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } switch ( ptr_reg -> type ) { case PTR_TO_MAP_VALUE_OR_NULL : verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>prohibited,<S2SV_blank>null-check<S2SV_blank>it<S2SV_blank>first\\\\n\" , dst , reg_type_str [ ptr_reg -> type ] ) ; return - EACCES ; case CONST_PTR_TO_MAP : case PTR_TO_PACKET_END : case PTR_TO_SOCKET : case PTR_TO_SOCKET_OR_NULL : verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>prohibited\\\\n\" , dst , reg_type_str [ ptr_reg -> type ] ) ; return - EACCES ; case PTR_TO_MAP_VALUE : if ( ! env -> allow_ptr_leaks && ! known && ( smin_val < 0 ) != ( smax_val < 0 ) ) { verbose ( env , \"R%d<S2SV_blank>has<S2SV_blank>unknown<S2SV_blank>scalar<S2SV_blank>with<S2SV_blank>mixed<S2SV_blank>signed<S2SV_blank>bounds,<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>with<S2SV_blank>it<S2SV_blank>prohibited<S2SV_blank>for<S2SV_blank>!root\\\\n\" , off_reg == dst_reg ? dst : src ) ; return - EACCES ; } default : break ; } dst_reg -> type = ptr_reg -> type ; dst_reg -> id = ptr_reg -> id ; if ( ! check_reg_sane_offset ( env , off_reg , ptr_reg -> type ) || ! check_reg_sane_offset ( env , ptr_reg , ptr_reg -> type ) ) return - EINVAL ; switch ( opcode ) { case BPF_ADD : <S2SV_StartBug> if ( known && ( ptr_reg -> off + smin_val == <S2SV_EndBug> ( s64 ) ( s32 ) ( ptr_reg -> off + smin_val ) ) ) { dst_reg -> smin_value = smin_ptr ; dst_reg -> smax_value = smax_ptr ; dst_reg -> umin_value = umin_ptr ; dst_reg -> umax_value = umax_ptr ; dst_reg -> var_off = ptr_reg -> var_off ; dst_reg -> off = ptr_reg -> off + smin_val ; dst_reg -> raw = ptr_reg -> raw ; break ; } if ( signed_add_overflows ( smin_ptr , smin_val ) || signed_add_overflows ( smax_ptr , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = smin_ptr + smin_val ; dst_reg -> smax_value = smax_ptr + smax_val ; } if ( umin_ptr + umin_val < umin_ptr || umax_ptr + umax_val < umax_ptr ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value = umin_ptr + umin_val ; dst_reg -> umax_value = umax_ptr + umax_val ; } dst_reg -> var_off = tnum_add ( ptr_reg -> var_off , off_reg -> var_off ) ; dst_reg -> off = ptr_reg -> off ; dst_reg -> raw = ptr_reg -> raw ; if ( reg_is_pkt_pointer ( ptr_reg ) ) { dst_reg -> id = ++ env -> id_gen ; dst_reg -> raw = 0 ; } break ; case BPF_SUB : <S2SV_StartBug> if ( dst_reg == off_reg ) { <S2SV_EndBug> verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>subtract<S2SV_blank>pointer<S2SV_blank>from<S2SV_blank>scalar\\\\n\" , dst ) ; return - EACCES ; } if ( ptr_reg -> type == PTR_TO_STACK ) { verbose ( env , \"R%d<S2SV_blank>subtraction<S2SV_blank>from<S2SV_blank>stack<S2SV_blank>pointer<S2SV_blank>prohibited\\\\n\" , dst ) ; return - EACCES ; } if ( known && ( ptr_reg -> off - smin_val == ( s64 ) ( s32 ) ( ptr_reg -> off - smin_val ) ) ) { dst_reg -> smin_value = smin_ptr ; dst_reg -> smax_value = smax_ptr ; dst_reg -> umin_value = umin_ptr ; dst_reg -> umax_value = umax_ptr ; dst_reg -> var_off = ptr_reg -> var_off ; dst_reg -> id = ptr_reg -> id ; dst_reg -> off = ptr_reg -> off - smin_val ; dst_reg -> raw = ptr_reg -> raw ; break ; } if ( signed_sub_overflows ( smin_ptr , smax_val ) || signed_sub_overflows ( smax_ptr , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = smin_ptr - smax_val ; dst_reg -> smax_value = smax_ptr - smin_val ; } if ( umin_ptr < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value = umin_ptr - umax_val ; dst_reg -> umax_value = umax_ptr - umin_val ; } dst_reg -> var_off = tnum_sub ( ptr_reg -> var_off , off_reg -> var_off ) ; dst_reg -> off = ptr_reg -> off ; dst_reg -> raw = ptr_reg -> raw ; if ( reg_is_pkt_pointer ( ptr_reg ) ) { dst_reg -> id = ++ env -> id_gen ; if ( smin_val < 0 ) dst_reg -> raw = 0 ; } break ; case BPF_AND : case BPF_OR : case BPF_XOR : verbose ( env , \"R%d<S2SV_blank>bitwise<S2SV_blank>operator<S2SV_blank>%s<S2SV_blank>on<S2SV_blank>pointer<S2SV_blank>prohibited\\\\n\" , dst , bpf_alu_string [ opcode >> 4 ] ) ; return - EACCES ; default : verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>with<S2SV_blank>%s<S2SV_blank>operator<S2SV_blank>prohibited\\\\n\" , dst , bpf_alu_string [ opcode >> 4 ] ) ; return - EACCES ; } if ( ! check_reg_sane_offset ( env , dst_reg , ptr_reg -> type ) ) return - EINVAL ; __update_reg_bounds ( dst_reg ) ; __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; if ( ! env -> allow_ptr_leaks ) { if ( dst_reg -> type == PTR_TO_MAP_VALUE && check_map_access ( env , dst , dst_reg -> off , 1 , false ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>of<S2SV_blank>map<S2SV_blank>value<S2SV_blank>goes<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range,<S2SV_blank>\" \"prohibited<S2SV_blank>for<S2SV_blank>!root\\\\n\" , dst ) ; return - EACCES ; } else if ( dst_reg -> type == PTR_TO_STACK && check_stack_access ( env , dst_reg , dst_reg -> off + dst_reg -> var_off . value , 1 ) ) { verbose ( env , \"R%d<S2SV_blank>stack<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>goes<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range,<S2SV_blank>\" \"prohibited<S2SV_blank>for<S2SV_blank>!root\\\\n\" , dst ) ; return - EACCES ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> code ) ; int ret <S2SV_ModStart> case BPF_ADD : ret = sanitize_ptr_alu ( env , insn , ptr_reg , dst_reg , smin_val < 0 ) ; if ( ret < 0 ) { verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>add<S2SV_blank>from<S2SV_blank>different<S2SV_blank>maps<S2SV_blank>or<S2SV_blank>paths\\\\n\" , dst ) ; return ret ; } <S2SV_ModStart> case BPF_SUB : ret = sanitize_ptr_alu ( env , insn , ptr_reg , dst_reg , smin_val < 0 ) ; if ( ret < 0 ) { verbose ( env , \"R%d<S2SV_blank>tried<S2SV_blank>to<S2SV_blank>sub<S2SV_blank>from<S2SV_blank>different<S2SV_blank>maps<S2SV_blank>or<S2SV_blank>paths\\\\n\" , dst ) ; return ret ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-24371\n\n```\nCWE-763 static void youngcollection ( lua_State * L , global_State * g ) { GCObject * * psurvival ; lua_assert ( g -> gcstate == GCSpropagate ) ; markold ( g , g -> allgc , g -> reallyold ) ; markold ( g , g -> finobj , g -> finobjrold ) ; atomic ( L ) ; <S2SV_StartBug> psurvival = sweepgen ( L , g , & g -> allgc , g -> survival ) ; <S2SV_EndBug> sweepgen ( L , g , psurvival , g -> reallyold ) ; g -> reallyold = g -> old ; g -> old = * psurvival ; g -> survival = g -> allgc ; psurvival = sweepgen ( L , g , & g -> finobj , g -> finobjsur ) ; sweepgen ( L , g , psurvival , g -> finobjrold ) ; g -> finobjrold = g -> finobjold ; g -> finobjold = * psurvival ; g -> finobjsur = g -> finobj ; sweepgen ( L , g , & g -> tobefnz , NULL ) ; finishgencycle ( L , g ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> L ) ; g -> gcstate = GCSswpallgc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1593\n\n```\nCWE-264 <S2SV_StartBug> static unsigned int stack_maxrandom_size ( void ) <S2SV_EndBug> { <S2SV_StartBug> unsigned int max = 0 ; <S2SV_EndBug> if ( ( current -> flags & PF_RANDOMIZE ) && ! ( current -> personality & ADDR_NO_RANDOMIZE ) ) { <S2SV_StartBug> max = ( ( - 1U ) & STACK_RND_MASK ) << PAGE_SHIFT ; <S2SV_EndBug> } return max ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static unsigned long <S2SV_ModEnd> stack_maxrandom_size ( void <S2SV_ModStart> ) { unsigned long <S2SV_ModEnd> max = 0 <S2SV_ModStart> ( ( - 1UL <S2SV_ModEnd> ) & STACK_RND_MASK\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_yv12_copy_frame_c ( const YV12_BUFFER_CONFIG * src_ybc , YV12_BUFFER_CONFIG * dst_ybc ) { int row ; const uint8_t * src = src_ybc -> y_buffer ; uint8_t * dst = dst_ybc -> y_buffer ; # if 0 assert ( src_ybc -> y_width == dst_ybc -> y_width ) ; assert ( src_ybc -> y_height == dst_ybc -> y_height ) ; # endif <S2SV_StartBug> for ( row = 0 ; row < src_ybc -> y_height ; ++ row ) { <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( dst , src , src_ybc -> y_width ) ; <S2SV_EndBug> src += src_ybc -> y_stride ; dst += dst_ybc -> y_stride ; } src = src_ybc -> u_buffer ; dst = dst_ybc -> u_buffer ; for ( row = 0 ; row < src_ybc -> uv_height ; ++ row ) { <S2SV_StartBug> vpx_memcpy ( dst , src , src_ybc -> uv_width ) ; <S2SV_EndBug> src += src_ybc -> uv_stride ; dst += dst_ybc -> uv_stride ; } src = src_ybc -> v_buffer ; dst = dst_ybc -> v_buffer ; for ( row = 0 ; row < src_ybc -> uv_height ; ++ row ) { <S2SV_StartBug> vpx_memcpy ( dst , src , src_ybc -> uv_width ) ; <S2SV_EndBug> src += src_ybc -> uv_stride ; dst += dst_ybc -> uv_stride ; } vp8_yv12_extend_frame_borders_c ( dst_ybc ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif # if CONFIG_VP9_HIGHBITDEPTH if ( src_ybc -> flags & YV12_FLAG_HIGHBITDEPTH ) { assert ( dst_ybc -> flags & YV12_FLAG_HIGHBITDEPTH ) ; <S2SV_ModStart> row ) { memcpy_short_addr <S2SV_ModEnd> ( dst , <S2SV_ModStart> row ) { memcpy_short_addr <S2SV_ModEnd> ( dst , <S2SV_ModStart> row ) { memcpy_short_addr <S2SV_ModEnd> ( dst , <S2SV_ModStart> dst_ybc ) ; return ; } else { assert ( ! ( dst_ybc -> flags & YV12_FLAG_HIGHBITDEPTH ) ) ; } # endif for ( row = 0 ; row < src_ybc -> y_height ; ++ row ) { memcpy ( dst , src , src_ybc -> y_width ) ; src += src_ybc -> y_stride ; dst += dst_ybc -> y_stride ; } src = src_ybc -> u_buffer ; dst = dst_ybc -> u_buffer ; for ( row = 0 ; row < src_ybc -> uv_height ; ++ row ) { memcpy ( dst , src , src_ybc -> uv_width ) ; src += src_ybc -> uv_stride ; dst += dst_ybc -> uv_stride ; } src = src_ybc -> v_buffer ; dst = dst_ybc -> v_buffer ; for ( row = 0 ; row < src_ybc -> uv_height ; ++ row ) { memcpy ( dst , src , src_ybc -> uv_width ) ; src += src_ybc -> uv_stride ; dst += dst_ybc -> uv_stride ; } vp8_yv12_extend_frame_borders_c ( dst_ybc ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10190\n\n```\nCWE-119 static int http_read_header ( URLContext * h , int * new_location ) { HTTPContext * s = h -> priv_data ; char line [ MAX_URL_SIZE ] ; int err = 0 ; <S2SV_StartBug> s -> chunksize = - 1 ; <S2SV_EndBug> for ( ; ; ) { if ( ( err = http_get_line ( s , line , sizeof ( line ) ) ) < 0 ) return err ; av_log ( h , AV_LOG_TRACE , \"header=\\'%s\\'\\\\n\" , line ) ; err = process_line ( h , line , s -> line_count , new_location ) ; if ( err < 0 ) return err ; if ( err == 0 ) break ; s -> line_count ++ ; } if ( s -> seekable == - 1 && s -> is_mediagateway && s -> filesize == 2000000000 ) h -> is_streamed = 1 ; cookie_string ( s -> cookie_dict , & s -> cookies ) ; av_dict_free ( & s -> cookie_dict ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> chunksize = UINT64_MAX <S2SV_ModEnd> ; for (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_set_roi_map ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> return VPX_CODEC_INVALID_PARAM ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> args ) { ( void ) ctx ; ( void ) args ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12993\n\n```\nCWE-125 static int juniper_parse_header ( netdissect_options * ndo , const u_char * p , const struct pcap_pkthdr * h , struct juniper_l2info_t * l2info ) { const struct juniper_cookie_table_t * lp = juniper_cookie_table ; u_int idx , jnx_ext_len , jnx_header_len = 0 ; uint8_t tlv_type , tlv_len ; uint32_t control_word ; int tlv_value ; const u_char * tptr ; l2info -> header_len = 0 ; l2info -> cookie_len = 0 ; l2info -> proto = 0 ; l2info -> length = h -> len ; l2info -> caplen = h -> caplen ; ND_TCHECK2 ( p [ 0 ] , 4 ) ; l2info -> flags = p [ 3 ] ; l2info -> direction = p [ 3 ] & JUNIPER_BPF_PKT_IN ; if ( EXTRACT_24BITS ( p ) != JUNIPER_MGC_NUMBER ) { ND_PRINT ( ( ndo , \"no<S2SV_blank>magic-number<S2SV_blank>found!\" ) ) ; return 0 ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%3s<S2SV_blank>\" , tok2str ( juniper_direction_values , \"---\" , l2info -> direction ) ) ) ; jnx_header_len = 4 ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\tJuniper<S2SV_blank>PCAP<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( jnx_flag_values , \"none\" , l2info -> flags ) ) ) ; if ( ( l2info -> flags & JUNIPER_BPF_EXT ) == JUNIPER_BPF_EXT ) { tptr = p + jnx_header_len ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; jnx_ext_len = EXTRACT_16BITS ( tptr ) ; jnx_header_len += 2 ; tptr += 2 ; jnx_header_len += jnx_ext_len ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>PCAP<S2SV_blank>Extension(s)<S2SV_blank>total<S2SV_blank>length<S2SV_blank>%u\" , jnx_ext_len ) ) ; ND_TCHECK2 ( tptr [ 0 ] , jnx_ext_len ) ; while ( jnx_ext_len > JUNIPER_EXT_TLV_OVERHEAD ) { tlv_type = * ( tptr ++ ) ; tlv_len = * ( tptr ++ ) ; tlv_value = 0 ; if ( tlv_type == 0 || tlv_len == 0 ) break ; if ( tlv_len + JUNIPER_EXT_TLV_OVERHEAD > jnx_ext_len ) goto trunc ; if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Extension<S2SV_blank>TLV<S2SV_blank>#%u,<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>value<S2SV_blank>\" , tok2str ( jnx_ext_tlv_values , \"Unknown\" , tlv_type ) , tlv_type , tlv_len ) ) ; tlv_value = juniper_read_tlv_value ( tptr , tlv_type , tlv_len ) ; switch ( tlv_type ) { case JUNIPER_EXT_TLV_IFD_NAME : break ; case JUNIPER_EXT_TLV_IFD_MEDIATYPE : case JUNIPER_EXT_TLV_TTP_IFD_MEDIATYPE : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%u)\" , tok2str ( juniper_ifmt_values , \"Unknown\" , tlv_value ) , tlv_value ) ) ; } break ; case JUNIPER_EXT_TLV_IFL_ENCAPS : case JUNIPER_EXT_TLV_TTP_IFL_ENCAPS : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>(%u)\" , tok2str ( juniper_ifle_values , \"Unknown\" , tlv_value ) , tlv_value ) ) ; } break ; case JUNIPER_EXT_TLV_IFL_IDX : case JUNIPER_EXT_TLV_IFL_UNIT : case JUNIPER_EXT_TLV_IFD_IDX : default : if ( tlv_value != - 1 ) { if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"%u\" , tlv_value ) ) ; } break ; } tptr += tlv_len ; jnx_ext_len -= tlv_len + JUNIPER_EXT_TLV_OVERHEAD ; } if ( ndo -> ndo_vflag > 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t-----original<S2SV_blank>packet-----\\\\n\\\\t\" ) ) ; } if ( ( l2info -> flags & JUNIPER_BPF_NO_L2 ) == JUNIPER_BPF_NO_L2 ) { if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"no-L2-hdr,<S2SV_blank>\" ) ) ; ND_TCHECK2 ( p [ jnx_header_len + 4 ] , 1 ) ; if ( ip_heuristic_guess ( ndo , p + jnx_header_len + 4 , l2info -> length - ( jnx_header_len + 4 ) ) == 0 ) ND_PRINT ( ( ndo , \"no<S2SV_blank>IP-hdr<S2SV_blank>found!\" ) ) ; l2info -> header_len = jnx_header_len + 4 ; return 0 ; } l2info -> header_len = jnx_header_len ; p += l2info -> header_len ; l2info -> length -= l2info -> header_len ; l2info -> caplen -= l2info -> header_len ; <S2SV_StartBug> while ( lp -> s != NULL ) { <S2SV_EndBug> if ( lp -> pictype == l2info -> pictype ) { l2info -> cookie_len += lp -> cookie_len ; switch ( p [ 0 ] ) { case LS_COOKIE_ID : l2info -> cookie_type = LS_COOKIE_ID ; l2info -> cookie_len += 2 ; break ; case AS_COOKIE_ID : l2info -> cookie_type = AS_COOKIE_ID ; l2info -> cookie_len = 8 ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } # ifdef DLT_JUNIPER_MFR if ( l2info -> pictype == DLT_JUNIPER_MFR && ( p [ 0 ] & MFR_BE_MASK ) == MFR_BE_MASK ) { l2info -> cookie_len = 0 ; } # endif l2info -> header_len += l2info -> cookie_len ; l2info -> length -= l2info -> cookie_len ; l2info -> caplen -= l2info -> cookie_len ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%s-PIC,<S2SV_blank>cookie-len<S2SV_blank>%u\" , lp -> s , l2info -> cookie_len ) ) ; if ( l2info -> cookie_len > 0 ) { ND_TCHECK2 ( p [ 0 ] , l2info -> cookie_len ) ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>cookie<S2SV_blank>0x\" ) ) ; for ( idx = 0 ; idx < l2info -> cookie_len ; idx ++ ) { l2info -> cookie [ idx ] = p [ idx ] ; if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"%02x\" , p [ idx ] ) ) ; } } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \":<S2SV_blank>\" ) ) ; l2info -> proto = EXTRACT_16BITS ( p + l2info -> cookie_len ) ; break ; } ++ lp ; } p += l2info -> cookie_len ; switch ( l2info -> pictype ) { # ifdef DLT_JUNIPER_MLPPP case DLT_JUNIPER_MLPPP : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : l2info -> bundle = l2info -> cookie [ 1 ] ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } break ; # endif # ifdef DLT_JUNIPER_MLFR case DLT_JUNIPER_MLFR : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : <S2SV_StartBug> l2info -> bundle = l2info -> cookie [ 1 ] ; <S2SV_EndBug> l2info -> proto = EXTRACT_16BITS ( p ) ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; } break ; # endif # ifdef DLT_JUNIPER_MFR case DLT_JUNIPER_MFR : switch ( l2info -> cookie_type ) { case LS_COOKIE_ID : <S2SV_StartBug> l2info -> bundle = l2info -> cookie [ 1 ] ; <S2SV_EndBug> l2info -> proto = EXTRACT_16BITS ( p ) ; l2info -> header_len += 2 ; l2info -> length -= 2 ; l2info -> caplen -= 2 ; break ; case AS_COOKIE_ID : l2info -> bundle = ( EXTRACT_16BITS ( & l2info -> cookie [ 6 ] ) >> 3 ) & 0xfff ; l2info -> proto = ( l2info -> cookie [ 5 ] ) & JUNIPER_LSQ_L3_PROTO_MASK ; break ; default : l2info -> bundle = l2info -> cookie [ 0 ] ; break ; } break ; # endif # ifdef DLT_JUNIPER_ATM2 case DLT_JUNIPER_ATM2 : ND_TCHECK2 ( p [ 0 ] , 4 ) ; if ( l2info -> cookie [ 7 ] & ATM2_PKT_TYPE_MASK ) { control_word = EXTRACT_32BITS ( p ) ; switch ( control_word ) { case 0 : case 0x08000000 : case 0x08380000 : l2info -> header_len += 4 ; break ; default : break ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"control-word<S2SV_blank>0x%08x<S2SV_blank>\" , control_word ) ) ; } break ; # endif # ifdef DLT_JUNIPER_GGSN case DLT_JUNIPER_GGSN : break ; # endif # ifdef DLT_JUNIPER_ATM1 case DLT_JUNIPER_ATM1 : break ; # endif # ifdef DLT_JUNIPER_PPP case DLT_JUNIPER_PPP : break ; # endif # ifdef DLT_JUNIPER_CHDLC case DLT_JUNIPER_CHDLC : break ; # endif # ifdef DLT_JUNIPER_ETHER case DLT_JUNIPER_ETHER : break ; # endif # ifdef DLT_JUNIPER_FRELAY case DLT_JUNIPER_FRELAY : break ; # endif default : ND_PRINT ( ( ndo , \"Unknown<S2SV_blank>Juniper<S2SV_blank>DLT_<S2SV_blank>type<S2SV_blank>%u:<S2SV_blank>\" , l2info -> pictype ) ) ; break ; } if ( ndo -> ndo_eflag > 1 ) ND_PRINT ( ( ndo , \"hlen<S2SV_blank>%u,<S2SV_blank>proto<S2SV_blank>0x%04x,<S2SV_blank>\" , l2info -> header_len , l2info -> proto ) ) ; return 1 ; trunc : ND_PRINT ( ( ndo , \"[|juniper_hdr],<S2SV_blank>length<S2SV_blank>%u\" , h -> len ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> header_len ; ND_TCHECK ( p [ 0 ] ) ; <S2SV_ModStart> case LS_COOKIE_ID : ND_TCHECK2 ( p [ 0 ] , 2 ) ; <S2SV_ModStart> case LS_COOKIE_ID : ND_TCHECK2 ( p [ 0 ] , 2 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7008\n\n```\nCWE-000 static int decode_slice_header ( H264Context * h , H264Context * h0 ) { unsigned int first_mb_in_slice ; unsigned int pps_id ; int ret ; unsigned int slice_type , tmp , i , j ; int last_pic_structure , last_pic_droppable ; int must_reinit ; int needs_reinit = 0 ; int field_pic_flag , bottom_field_flag ; h -> me . qpel_put = h -> h264qpel . put_h264_qpel_pixels_tab ; h -> me . qpel_avg = h -> h264qpel . avg_h264_qpel_pixels_tab ; first_mb_in_slice = get_ue_golomb_long ( & h -> gb ) ; if ( first_mb_in_slice == 0 ) { if ( h0 -> current_slice && FIELD_PICTURE ( h ) ) { field_end ( h , 1 ) ; } h0 -> current_slice = 0 ; if ( ! h0 -> first_field ) { if ( h -> cur_pic_ptr && ! h -> droppable ) { ff_thread_report_progress ( & h -> cur_pic_ptr -> tf , INT_MAX , h -> picture_structure == PICT_BOTTOM_FIELD ) ; } h -> cur_pic_ptr = NULL ; } } slice_type = get_ue_golomb_31 ( & h -> gb ) ; if ( slice_type > 9 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"slice<S2SV_blank>type<S2SV_blank>too<S2SV_blank>large<S2SV_blank>(%d)<S2SV_blank>at<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , slice_type , h -> mb_x , h -> mb_y ) ; return AVERROR_INVALIDDATA ; } if ( slice_type > 4 ) { slice_type -= 5 ; h -> slice_type_fixed = 1 ; } else h -> slice_type_fixed = 0 ; slice_type = golomb_to_pict_type [ slice_type ] ; h -> slice_type = slice_type ; h -> slice_type_nos = slice_type & 3 ; h -> pict_type = h -> slice_type ; pps_id = get_ue_golomb ( & h -> gb ) ; if ( pps_id >= MAX_PPS_COUNT ) { av_log ( h -> avctx , AV_LOG_ERROR , \"pps_id<S2SV_blank>%d<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , pps_id ) ; return AVERROR_INVALIDDATA ; } if ( ! h0 -> pps_buffers [ pps_id ] ) { av_log ( h -> avctx , AV_LOG_ERROR , \"non-existing<S2SV_blank>PPS<S2SV_blank>%u<S2SV_blank>referenced\\\\n\" , pps_id ) ; return AVERROR_INVALIDDATA ; } h -> pps = * h0 -> pps_buffers [ pps_id ] ; if ( ! h0 -> sps_buffers [ h -> pps . sps_id ] ) { av_log ( h -> avctx , AV_LOG_ERROR , \"non-existing<S2SV_blank>SPS<S2SV_blank>%u<S2SV_blank>referenced\\\\n\" , h -> pps . sps_id ) ; return AVERROR_INVALIDDATA ; } if ( h -> pps . sps_id != h -> current_sps_id || h0 -> sps_buffers [ h -> pps . sps_id ] -> new ) { h0 -> sps_buffers [ h -> pps . sps_id ] -> new = 0 ; h -> current_sps_id = h -> pps . sps_id ; h -> sps = * h0 -> sps_buffers [ h -> pps . sps_id ] ; if ( h -> mb_width != h -> sps . mb_width || h -> mb_height != h -> sps . mb_height * ( 2 - h -> sps . frame_mbs_only_flag ) || h -> avctx -> bits_per_raw_sample != h -> sps . bit_depth_luma || h -> cur_chroma_format_idc != h -> sps . chroma_format_idc ) needs_reinit = 1 ; if ( h -> bit_depth_luma != h -> sps . bit_depth_luma || h -> chroma_format_idc != h -> sps . chroma_format_idc ) { h -> bit_depth_luma = h -> sps . bit_depth_luma ; h -> chroma_format_idc = h -> sps . chroma_format_idc ; needs_reinit = 1 ; } if ( ( ret = h264_set_parameter_from_sps ( h ) ) < 0 ) return ret ; } h -> avctx -> profile = ff_h264_get_profile ( & h -> sps ) ; h -> avctx -> level = h -> sps . level_idc ; h -> avctx -> refs = h -> sps . ref_frame_count ; must_reinit = ( h -> context_initialized && ( 16 * h -> sps . mb_width != h -> avctx -> coded_width || 16 * h -> sps . mb_height * ( 2 - h -> sps . frame_mbs_only_flag ) != h -> avctx -> coded_height || h -> avctx -> bits_per_raw_sample != h -> sps . bit_depth_luma || h -> cur_chroma_format_idc != h -> sps . chroma_format_idc || av_cmp_q ( h -> sps . sar , h -> avctx -> sample_aspect_ratio ) || h -> mb_width != h -> sps . mb_width || h -> mb_height != h -> sps . mb_height * ( 2 - h -> sps . frame_mbs_only_flag ) ) ) ; if ( h0 -> avctx -> pix_fmt != get_pixel_format ( h0 , 0 ) ) must_reinit = 1 ; h -> mb_width = h -> sps . mb_width ; h -> mb_height = h -> sps . mb_height * ( 2 - h -> sps . frame_mbs_only_flag ) ; h -> mb_num = h -> mb_width * h -> mb_height ; h -> mb_stride = h -> mb_width + 1 ; h -> b_stride = h -> mb_width * 4 ; h -> chroma_y_shift = h -> sps . chroma_format_idc <= 1 ; h -> width = 16 * h -> mb_width ; h -> height = 16 * h -> mb_height ; ret = init_dimensions ( h ) ; if ( ret < 0 ) return ret ; if ( h -> sps . video_signal_type_present_flag ) { h -> avctx -> color_range = h -> sps . full_range > 0 ? AVCOL_RANGE_JPEG : AVCOL_RANGE_MPEG ; if ( h -> sps . colour_description_present_flag ) { if ( h -> avctx -> colorspace != h -> sps . colorspace ) needs_reinit = 1 ; h -> avctx -> color_primaries = h -> sps . color_primaries ; h -> avctx -> color_trc = h -> sps . color_trc ; h -> avctx -> colorspace = h -> sps . colorspace ; } } if ( h -> context_initialized && ( h -> width != h -> avctx -> coded_width || h -> height != h -> avctx -> coded_height || must_reinit || needs_reinit ) ) { if ( h != h0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"changing<S2SV_blank>width/height<S2SV_blank>on<S2SV_blank>\" \"slice<S2SV_blank>%d\\\\n\" , h0 -> current_slice + 1 ) ; return AVERROR_INVALIDDATA ; } flush_change ( h ) ; if ( ( ret = get_pixel_format ( h , 1 ) ) < 0 ) return ret ; h -> avctx -> pix_fmt = ret ; av_log ( h -> avctx , AV_LOG_INFO , \"Reinit<S2SV_blank>context<S2SV_blank>to<S2SV_blank>%dx%d,<S2SV_blank>\" \"pix_fmt:<S2SV_blank>%s\\\\n\" , h -> width , h -> height , av_get_pix_fmt_name ( h -> avctx -> pix_fmt ) ) ; if ( ( ret = h264_slice_header_init ( h , 1 ) ) < 0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"h264_slice_header_init()<S2SV_blank>failed\\\\n\" ) ; return ret ; } } if ( ! h -> context_initialized ) { if ( h != h0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"Cannot<S2SV_blank>(re-)initialize<S2SV_blank>context<S2SV_blank>during<S2SV_blank>parallel<S2SV_blank>decoding.\\\\n\" ) ; return AVERROR_PATCHWELCOME ; } if ( ( ret = get_pixel_format ( h , 1 ) ) < 0 ) return ret ; h -> avctx -> pix_fmt = ret ; if ( ( ret = h264_slice_header_init ( h , 0 ) ) < 0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"h264_slice_header_init()<S2SV_blank>failed\\\\n\" ) ; return ret ; } } if ( h == h0 && h -> dequant_coeff_pps != pps_id ) { h -> dequant_coeff_pps = pps_id ; init_dequant_tables ( h ) ; } h -> frame_num = get_bits ( & h -> gb , h -> sps . log2_max_frame_num ) ; h -> mb_mbaff = 0 ; h -> mb_aff_frame = 0 ; last_pic_structure = h0 -> picture_structure ; last_pic_droppable = h0 -> droppable ; h -> droppable = h -> nal_ref_idc == 0 ; if ( h -> sps . frame_mbs_only_flag ) { h -> picture_structure = PICT_FRAME ; } else { if ( ! h -> sps . direct_8x8_inference_flag && slice_type == AV_PICTURE_TYPE_B ) { av_log ( h -> avctx , AV_LOG_ERROR , \"This<S2SV_blank>stream<S2SV_blank>was<S2SV_blank>generated<S2SV_blank>by<S2SV_blank>a<S2SV_blank>broken<S2SV_blank>encoder,<S2SV_blank>invalid<S2SV_blank>8x8<S2SV_blank>inference\\\\n\" ) ; return - 1 ; } field_pic_flag = get_bits1 ( & h -> gb ) ; if ( field_pic_flag ) { bottom_field_flag = get_bits1 ( & h -> gb ) ; h -> picture_structure = PICT_TOP_FIELD + bottom_field_flag ; } else { h -> picture_structure = PICT_FRAME ; h -> mb_aff_frame = h -> sps . mb_aff ; } } h -> mb_field_decoding_flag = h -> picture_structure != PICT_FRAME ; if ( h0 -> current_slice != 0 ) { if ( last_pic_structure != h -> picture_structure || last_pic_droppable != h -> droppable ) { av_log ( h -> avctx , AV_LOG_ERROR , \"Changing<S2SV_blank>field<S2SV_blank>mode<S2SV_blank>(%d<S2SV_blank>-><S2SV_blank>%d)<S2SV_blank>between<S2SV_blank>slices<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed\\\\n\" , last_pic_structure , h -> picture_structure ) ; h -> picture_structure = last_pic_structure ; h -> droppable = last_pic_droppable ; return AVERROR_INVALIDDATA ; } else if ( ! h0 -> cur_pic_ptr ) { av_log ( h -> avctx , AV_LOG_ERROR , \"unset<S2SV_blank>cur_pic_ptr<S2SV_blank>on<S2SV_blank>%d.<S2SV_blank>slice\\\\n\" , h0 -> current_slice + 1 ) ; return AVERROR_INVALIDDATA ; } } else { if ( h -> frame_num != h -> prev_frame_num && h -> prev_frame_num >= 0 ) { int unwrap_prev_frame_num = h -> prev_frame_num ; int max_frame_num = 1 << h -> sps . log2_max_frame_num ; if ( unwrap_prev_frame_num > h -> frame_num ) unwrap_prev_frame_num -= max_frame_num ; if ( ( h -> frame_num - unwrap_prev_frame_num ) > h -> sps . ref_frame_count ) { unwrap_prev_frame_num = ( h -> frame_num - h -> sps . ref_frame_count ) - 1 ; if ( unwrap_prev_frame_num < 0 ) unwrap_prev_frame_num += max_frame_num ; h -> prev_frame_num = unwrap_prev_frame_num ; } } if ( h0 -> first_field ) { assert ( h0 -> cur_pic_ptr ) ; assert ( h0 -> cur_pic_ptr -> f . data [ 0 ] ) ; assert ( h0 -> cur_pic_ptr -> reference != DELAYED_PIC_REF ) ; <S2SV_StartBug> if ( ! last_pic_droppable && h0 -> cur_pic_ptr -> tf . owner == h0 -> avctx ) { <S2SV_EndBug> ff_thread_report_progress ( & h0 -> cur_pic_ptr -> tf , INT_MAX , last_pic_structure == PICT_BOTTOM_FIELD ) ; } if ( ! FIELD_PICTURE ( h ) || h -> picture_structure == last_pic_structure ) { <S2SV_StartBug> if ( ! last_pic_droppable && last_pic_structure != PICT_FRAME ) { <S2SV_EndBug> ff_thread_report_progress ( & h0 -> cur_pic_ptr -> tf , INT_MAX , last_pic_structure == PICT_TOP_FIELD ) ; } } else { if ( h0 -> cur_pic_ptr -> frame_num != h -> frame_num ) { <S2SV_StartBug> if ( ! last_pic_droppable && last_pic_structure != PICT_FRAME ) { <S2SV_EndBug> ff_thread_report_progress ( & h0 -> cur_pic_ptr -> tf , INT_MAX , last_pic_structure == PICT_TOP_FIELD ) ; } } else { if ( ! ( ( last_pic_structure == PICT_TOP_FIELD && h -> picture_structure == PICT_BOTTOM_FIELD ) || ( last_pic_structure == PICT_BOTTOM_FIELD && h -> picture_structure == PICT_TOP_FIELD ) ) ) { av_log ( h -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>field<S2SV_blank>mode<S2SV_blank>combination<S2SV_blank>%d/%d\\\\n\" , last_pic_structure , h -> picture_structure ) ; h -> picture_structure = last_pic_structure ; h -> droppable = last_pic_droppable ; return AVERROR_INVALIDDATA ; } else if ( last_pic_droppable != h -> droppable ) { avpriv_request_sample ( h -> avctx , \"Found<S2SV_blank>reference<S2SV_blank>and<S2SV_blank>non-reference<S2SV_blank>fields<S2SV_blank>in<S2SV_blank>the<S2SV_blank>same<S2SV_blank>frame,<S2SV_blank>which\" ) ; h -> picture_structure = last_pic_structure ; h -> droppable = last_pic_droppable ; return AVERROR_PATCHWELCOME ; } } } } while ( h -> frame_num != h -> prev_frame_num && h -> prev_frame_num >= 0 && ! h0 -> first_field && h -> frame_num != ( h -> prev_frame_num + 1 ) % ( 1 << h -> sps . log2_max_frame_num ) ) { Picture * prev = h -> short_ref_count ? h -> short_ref [ 0 ] : NULL ; av_log ( h -> avctx , AV_LOG_DEBUG , \"Frame<S2SV_blank>num<S2SV_blank>gap<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , h -> frame_num , h -> prev_frame_num ) ; if ( ! h -> sps . gaps_in_frame_num_allowed_flag ) for ( i = 0 ; i < FF_ARRAY_ELEMS ( h -> last_pocs ) ; i ++ ) h -> last_pocs [ i ] = INT_MIN ; ret = h264_frame_start ( h ) ; if ( ret < 0 ) return ret ; h -> prev_frame_num ++ ; h -> prev_frame_num %= 1 << h -> sps . log2_max_frame_num ; h -> cur_pic_ptr -> frame_num = h -> prev_frame_num ; ff_thread_report_progress ( & h -> cur_pic_ptr -> tf , INT_MAX , 0 ) ; ff_thread_report_progress ( & h -> cur_pic_ptr -> tf , INT_MAX , 1 ) ; ret = ff_generate_sliding_window_mmcos ( h , 1 ) ; if ( ret < 0 && ( h -> avctx -> err_recognition & AV_EF_EXPLODE ) ) return ret ; ret = ff_h264_execute_ref_pic_marking ( h , h -> mmco , h -> mmco_index ) ; if ( ret < 0 && ( h -> avctx -> err_recognition & AV_EF_EXPLODE ) ) return ret ; if ( h -> short_ref_count ) { if ( prev ) { av_image_copy ( h -> short_ref [ 0 ] -> f . data , h -> short_ref [ 0 ] -> f . linesize , ( const uint8_t * * ) prev -> f . data , prev -> f . linesize , h -> avctx -> pix_fmt , h -> mb_width * 16 , h -> mb_height * 16 ) ; h -> short_ref [ 0 ] -> poc = prev -> poc + 2 ; } h -> short_ref [ 0 ] -> frame_num = h -> prev_frame_num ; } } if ( h0 -> first_field ) { assert ( h0 -> cur_pic_ptr ) ; assert ( h0 -> cur_pic_ptr -> f . data [ 0 ] ) ; assert ( h0 -> cur_pic_ptr -> reference != DELAYED_PIC_REF ) ; if ( ! FIELD_PICTURE ( h ) || h -> picture_structure == last_pic_structure ) { h0 -> cur_pic_ptr = NULL ; h0 -> first_field = FIELD_PICTURE ( h ) ; } else { if ( h0 -> cur_pic_ptr -> frame_num != h -> frame_num ) { ff_thread_report_progress ( & h0 -> cur_pic_ptr -> tf , INT_MAX , h0 -> picture_structure == PICT_BOTTOM_FIELD ) ; h0 -> first_field = 1 ; h0 -> cur_pic_ptr = NULL ; } else { h0 -> first_field = 0 ; } } } else { h0 -> first_field = FIELD_PICTURE ( h ) ; } if ( ! FIELD_PICTURE ( h ) || h0 -> first_field ) { if ( h264_frame_start ( h ) < 0 ) { h0 -> first_field = 0 ; return AVERROR_INVALIDDATA ; } } else { release_unused_pictures ( h , 0 ) ; } if ( FIELD_PICTURE ( h ) ) { for ( i = ( h -> picture_structure == PICT_BOTTOM_FIELD ) ; i < h -> mb_height ; i ++ ) memset ( h -> slice_table + i * h -> mb_stride , - 1 , ( h -> mb_stride - ( i + 1 == h -> mb_height ) ) * sizeof ( * h -> slice_table ) ) ; } else { memset ( h -> slice_table , - 1 , ( h -> mb_height * h -> mb_stride - 1 ) * sizeof ( * h -> slice_table ) ) ; } h0 -> last_slice_type = - 1 ; } if ( h != h0 && ( ret = clone_slice ( h , h0 ) ) < 0 ) return ret ; for ( i = 0 ; i < h -> slice_context_count ; i ++ ) if ( h -> thread_context [ i ] ) { ret = alloc_scratch_buffers ( h -> thread_context [ i ] , h -> linesize ) ; if ( ret < 0 ) return ret ; } h -> cur_pic_ptr -> frame_num = h -> frame_num ; av_assert1 ( h -> mb_num == h -> mb_width * h -> mb_height ) ; if ( first_mb_in_slice << FIELD_OR_MBAFF_PICTURE ( h ) >= h -> mb_num || first_mb_in_slice >= h -> mb_num ) { av_log ( h -> avctx , AV_LOG_ERROR , \"first_mb_in_slice<S2SV_blank>overflow\\\\n\" ) ; return AVERROR_INVALIDDATA ; } h -> resync_mb_x = h -> mb_x = first_mb_in_slice % h -> mb_width ; h -> resync_mb_y = h -> mb_y = ( first_mb_in_slice / h -> mb_width ) << FIELD_OR_MBAFF_PICTURE ( h ) ; if ( h -> picture_structure == PICT_BOTTOM_FIELD ) h -> resync_mb_y = h -> mb_y = h -> mb_y + 1 ; av_assert1 ( h -> mb_y < h -> mb_height ) ; if ( h -> picture_structure == PICT_FRAME ) { h -> curr_pic_num = h -> frame_num ; h -> max_pic_num = 1 << h -> sps . log2_max_frame_num ; } else { h -> curr_pic_num = 2 * h -> frame_num + 1 ; h -> max_pic_num = 1 << ( h -> sps . log2_max_frame_num + 1 ) ; } if ( h -> nal_unit_type == NAL_IDR_SLICE ) get_ue_golomb ( & h -> gb ) ; if ( h -> sps . poc_type == 0 ) { h -> poc_lsb = get_bits ( & h -> gb , h -> sps . log2_max_poc_lsb ) ; if ( h -> pps . pic_order_present == 1 && h -> picture_structure == PICT_FRAME ) h -> delta_poc_bottom = get_se_golomb ( & h -> gb ) ; } if ( h -> sps . poc_type == 1 && ! h -> sps . delta_pic_order_always_zero_flag ) { h -> delta_poc [ 0 ] = get_se_golomb ( & h -> gb ) ; if ( h -> pps . pic_order_present == 1 && h -> picture_structure == PICT_FRAME ) h -> delta_poc [ 1 ] = get_se_golomb ( & h -> gb ) ; } ff_init_poc ( h , h -> cur_pic_ptr -> field_poc , & h -> cur_pic_ptr -> poc ) ; if ( h -> pps . redundant_pic_cnt_present ) h -> redundant_pic_count = get_ue_golomb ( & h -> gb ) ; ret = ff_set_ref_count ( h ) ; if ( ret < 0 ) return ret ; if ( slice_type != AV_PICTURE_TYPE_I && ( h0 -> current_slice == 0 || slice_type != h0 -> last_slice_type || memcmp ( h0 -> last_ref_count , h0 -> ref_count , sizeof ( h0 -> ref_count ) ) ) ) { ff_h264_fill_default_ref_list ( h ) ; } if ( h -> slice_type_nos != AV_PICTURE_TYPE_I ) { ret = ff_h264_decode_ref_pic_list_reordering ( h ) ; if ( ret < 0 ) { h -> ref_count [ 1 ] = h -> ref_count [ 0 ] = 0 ; return ret ; } } if ( ( h -> pps . weighted_pred && h -> slice_type_nos == AV_PICTURE_TYPE_P ) || ( h -> pps . weighted_bipred_idc == 1 && h -> slice_type_nos == AV_PICTURE_TYPE_B ) ) ff_pred_weight_table ( h ) ; else if ( h -> pps . weighted_bipred_idc == 2 && h -> slice_type_nos == AV_PICTURE_TYPE_B ) { implicit_weight_table ( h , - 1 ) ; } else { h -> use_weight = 0 ; for ( i = 0 ; i < 2 ; i ++ ) { h -> luma_weight_flag [ i ] = 0 ; h -> chroma_weight_flag [ i ] = 0 ; } } if ( h -> nal_ref_idc ) { ret = ff_h264_decode_ref_pic_marking ( h0 , & h -> gb , ! ( h -> avctx -> active_thread_type & FF_THREAD_FRAME ) || h0 -> current_slice == 0 ) ; if ( ret < 0 && ( h -> avctx -> err_recognition & AV_EF_EXPLODE ) ) return AVERROR_INVALIDDATA ; } if ( FRAME_MBAFF ( h ) ) { ff_h264_fill_mbaff_ref_list ( h ) ; if ( h -> pps . weighted_bipred_idc == 2 && h -> slice_type_nos == AV_PICTURE_TYPE_B ) { implicit_weight_table ( h , 0 ) ; implicit_weight_table ( h , 1 ) ; } } if ( h -> slice_type_nos == AV_PICTURE_TYPE_B && ! h -> direct_spatial_mv_pred ) ff_h264_direct_dist_scale_factor ( h ) ; ff_h264_direct_ref_list_init ( h ) ; if ( h -> slice_type_nos != AV_PICTURE_TYPE_I && h -> pps . cabac ) { tmp = get_ue_golomb_31 ( & h -> gb ) ; if ( tmp > 2 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"cabac_init_idc<S2SV_blank>overflow\\\\n\" ) ; return AVERROR_INVALIDDATA ; } h -> cabac_init_idc = tmp ; } h -> last_qscale_diff = 0 ; tmp = h -> pps . init_qp + get_se_golomb ( & h -> gb ) ; if ( tmp > 51 + 6 * ( h -> sps . bit_depth_luma - 8 ) ) { av_log ( h -> avctx , AV_LOG_ERROR , \"QP<S2SV_blank>%u<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , tmp ) ; return AVERROR_INVALIDDATA ; } h -> qscale = tmp ; h -> chroma_qp [ 0 ] = get_chroma_qp ( h , 0 , h -> qscale ) ; h -> chroma_qp [ 1 ] = get_chroma_qp ( h , 1 , h -> qscale ) ; if ( h -> slice_type == AV_PICTURE_TYPE_SP ) get_bits1 ( & h -> gb ) ; if ( h -> slice_type == AV_PICTURE_TYPE_SP || h -> slice_type == AV_PICTURE_TYPE_SI ) get_se_golomb ( & h -> gb ) ; h -> deblocking_filter = 1 ; h -> slice_alpha_c0_offset = 52 ; h -> slice_beta_offset = 52 ; if ( h -> pps . deblocking_filter_parameters_present ) { tmp = get_ue_golomb_31 ( & h -> gb ) ; if ( tmp > 2 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"deblocking_filter_idc<S2SV_blank>%u<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , tmp ) ; return AVERROR_INVALIDDATA ; } h -> deblocking_filter = tmp ; if ( h -> deblocking_filter < 2 ) h -> deblocking_filter ^= 1 ; if ( h -> deblocking_filter ) { h -> slice_alpha_c0_offset += get_se_golomb ( & h -> gb ) << 1 ; h -> slice_beta_offset += get_se_golomb ( & h -> gb ) << 1 ; if ( h -> slice_alpha_c0_offset > 104U || h -> slice_beta_offset > 104U ) { av_log ( h -> avctx , AV_LOG_ERROR , \"deblocking<S2SV_blank>filter<S2SV_blank>parameters<S2SV_blank>%d<S2SV_blank>%d<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\\\\n\" , h -> slice_alpha_c0_offset , h -> slice_beta_offset ) ; return AVERROR_INVALIDDATA ; } } } if ( h -> avctx -> skip_loop_filter >= AVDISCARD_ALL || ( h -> avctx -> skip_loop_filter >= AVDISCARD_NONKEY && h -> slice_type_nos != AV_PICTURE_TYPE_I ) || ( h -> avctx -> skip_loop_filter >= AVDISCARD_BIDIR && h -> slice_type_nos == AV_PICTURE_TYPE_B ) || ( h -> avctx -> skip_loop_filter >= AVDISCARD_NONREF && h -> nal_ref_idc == 0 ) ) h -> deblocking_filter = 0 ; if ( h -> deblocking_filter == 1 && h0 -> max_contexts > 1 ) { if ( h -> avctx -> flags2 & CODEC_FLAG2_FAST ) { h -> deblocking_filter = 2 ; } else { h0 -> max_contexts = 1 ; if ( ! h0 -> single_decode_warning ) { av_log ( h -> avctx , AV_LOG_INFO , \"Cannot<S2SV_blank>parallelize<S2SV_blank>deblocking<S2SV_blank>type<S2SV_blank>1,<S2SV_blank>decoding<S2SV_blank>such<S2SV_blank>frames<S2SV_blank>in<S2SV_blank>sequential<S2SV_blank>order\\\\n\" ) ; h0 -> single_decode_warning = 1 ; } if ( h != h0 ) { av_log ( h -> avctx , AV_LOG_ERROR , \"Deblocking<S2SV_blank>switched<S2SV_blank>inside<S2SV_blank>frame.\\\\n\" ) ; return 1 ; } } } h -> qp_thresh = 15 + 52 - FFMIN ( h -> slice_alpha_c0_offset , h -> slice_beta_offset ) - FFMAX3 ( 0 , h -> pps . chroma_qp_index_offset [ 0 ] , h -> pps . chroma_qp_index_offset [ 1 ] ) + 6 * ( h -> sps . bit_depth_luma - 8 ) ; h0 -> last_slice_type = slice_type ; memcpy ( h0 -> last_ref_count , h0 -> ref_count , sizeof ( h0 -> last_ref_count ) ) ; h -> slice_num = ++ h0 -> current_slice ; if ( h -> slice_num ) h0 -> slice_row [ ( h -> slice_num - 1 ) & ( MAX_SLICES - 1 ) ] = h -> resync_mb_y ; if ( h0 -> slice_row [ h -> slice_num & ( MAX_SLICES - 1 ) ] + 3 >= h -> resync_mb_y && h0 -> slice_row [ h -> slice_num & ( MAX_SLICES - 1 ) ] <= h -> resync_mb_y && h -> slice_num >= MAX_SLICES ) { av_log ( h -> avctx , AV_LOG_WARNING , \"Possibly<S2SV_blank>too<S2SV_blank>many<S2SV_blank>slices<S2SV_blank>(%d<S2SV_blank>>=<S2SV_blank>%d),<S2SV_blank>increase<S2SV_blank>MAX_SLICES<S2SV_blank>and<S2SV_blank>recompile<S2SV_blank>if<S2SV_blank>there<S2SV_blank>are<S2SV_blank>artifacts\\\\n\" , h -> slice_num , MAX_SLICES ) ; } for ( j = 0 ; j < 2 ; j ++ ) { int id_list [ 16 ] ; int * ref2frm = h -> ref2frm [ h -> slice_num & ( MAX_SLICES - 1 ) ] [ j ] ; for ( i = 0 ; i < 16 ; i ++ ) { id_list [ i ] = 60 ; if ( j < h -> list_count && i < h -> ref_count [ j ] && h -> ref_list [ j ] [ i ] . f . buf [ 0 ] ) { int k ; AVBuffer * buf = h -> ref_list [ j ] [ i ] . f . buf [ 0 ] -> buffer ; for ( k = 0 ; k < h -> short_ref_count ; k ++ ) if ( h -> short_ref [ k ] -> f . buf [ 0 ] -> buffer == buf ) { id_list [ i ] = k ; break ; } for ( k = 0 ; k < h -> long_ref_count ; k ++ ) if ( h -> long_ref [ k ] && h -> long_ref [ k ] -> f . buf [ 0 ] -> buffer == buf ) { id_list [ i ] = h -> short_ref_count + k ; break ; } } } ref2frm [ 0 ] = ref2frm [ 1 ] = - 1 ; for ( i = 0 ; i < 16 ; i ++ ) ref2frm [ i + 2 ] = 4 * id_list [ i ] + ( h -> ref_list [ j ] [ i ] . reference & 3 ) ; ref2frm [ 18 + 0 ] = ref2frm [ 18 + 1 ] = - 1 ; for ( i = 16 ; i < 48 ; i ++ ) ref2frm [ i + 4 ] = 4 * id_list [ ( i - 16 ) >> 1 ] + ( h -> ref_list [ j ] [ i ] . reference & 3 ) ; } if ( h -> ref_count [ 0 ] ) h -> er . last_pic = & h -> ref_list [ 0 ] [ 0 ] ; if ( h -> ref_count [ 1 ] ) h -> er . next_pic = & h -> ref_list [ 1 ] [ 0 ] ; h -> er . ref_count = h -> ref_count [ 0 ] ; if ( h -> avctx -> debug & FF_DEBUG_PICT_INFO ) { av_log ( h -> avctx , AV_LOG_DEBUG , \"slice:%d<S2SV_blank>%s<S2SV_blank>mb:%d<S2SV_blank>%c%s%s<S2SV_blank>pps:%u<S2SV_blank>frame:%d<S2SV_blank>poc:%d/%d<S2SV_blank>ref:%d/%d<S2SV_blank>qp:%d<S2SV_blank>loop:%d:%d:%d<S2SV_blank>weight:%d%s<S2SV_blank>%s\\\\n\" , h -> slice_num , ( h -> picture_structure == PICT_FRAME ? \"F\" : h -> picture_structure == PICT_TOP_FIELD ? \"T\" : \"B\" ) , first_mb_in_slice , av_get_picture_type_char ( h -> slice_type ) , h -> slice_type_fixed ? \"<S2SV_blank>fix\" : \"\" , h -> nal_unit_type == NAL_IDR_SLICE ? \"<S2SV_blank>IDR\" : \"\" , pps_id , h -> frame_num , h -> cur_pic_ptr -> field_poc [ 0 ] , h -> cur_pic_ptr -> field_poc [ 1 ] , h -> ref_count [ 0 ] , h -> ref_count [ 1 ] , h -> qscale , h -> deblocking_filter , h -> slice_alpha_c0_offset / 2 - 26 , h -> slice_beta_offset / 2 - 26 , h -> use_weight , h -> use_weight == 1 && h -> use_weight_chroma ? \"c\" : \"\" , h -> slice_type == AV_PICTURE_TYPE_B ? ( h -> direct_spatial_mv_pred ? \"SPAT\" : \"TEMP\" ) : \"\" ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> h0 -> cur_pic_ptr <S2SV_ModStart> { if ( <S2SV_ModEnd> last_pic_structure != PICT_FRAME <S2SV_ModStart> { if ( <S2SV_ModEnd> last_pic_structure != PICT_FRAME\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9761\n\n```\nCWE-119 static int cmd_info ( void * data , const char * input ) { RCore * core = ( RCore * ) data ; bool newline = r_config_get_i ( core -> config , \"scr.interactive\" ) ; RBinObject * o = r_bin_cur_object ( core -> bin ) ; RCoreFile * cf = core -> file ; int i , va = core -> io -> va || core -> io -> debug ; int mode = 0 ; int is_array = 0 ; Sdb * db ; for ( i = 0 ; input [ i ] && input [ i ] != '<S2SV_blank>' ; i ++ ) ; if ( i > 0 ) { switch ( input [ i - 1 ] ) { case '*' : mode = R_CORE_BIN_RADARE ; break ; case 'j' : mode = R_CORE_BIN_JSON ; break ; case 'q' : mode = R_CORE_BIN_SIMPLE ; break ; } } if ( mode == R_CORE_BIN_JSON ) { if ( strlen ( input + 1 ) > 1 ) { is_array = 1 ; } } if ( is_array ) { r_cons_printf ( \"{\" ) ; } if ( ! * input ) { cmd_info_bin ( core , va , mode ) ; } if ( ! strcmp ( input , \"*\" ) ) { input = \"I*\" ; } RBinObject * obj = r_bin_cur_object ( core -> bin ) ; while ( * input ) { switch ( * input ) { case 'b' : { ut64 baddr = r_config_get_i ( core -> config , \"bin.baddr\" ) ; if ( input [ 1 ] == '<S2SV_blank>' ) { baddr = r_num_math ( core -> num , input + 1 ) ; } r_core_bin_reload ( core , NULL , baddr ) ; r_core_block_read ( core ) ; newline = false ; } break ; case 'k' : db = o ? o -> kv : NULL ; switch ( input [ 1 ] ) { case 'v' : if ( db ) { char * o = sdb_querys ( db , NULL , 0 , input + 3 ) ; if ( o && * o ) { r_cons_print ( o ) ; } free ( o ) ; } break ; case '*' : r_core_bin_export_info_rad ( core ) ; break ; case '.' : case '<S2SV_blank>' : if ( db ) { char * o = sdb_querys ( db , NULL , 0 , input + 2 ) ; if ( o && * o ) { r_cons_print ( o ) ; } free ( o ) ; } break ; case '\\\\0' : if ( db ) { char * o = sdb_querys ( db , NULL , 0 , \"*\" ) ; if ( o && * o ) { r_cons_print ( o ) ; } free ( o ) ; } break ; case '?' : default : eprintf ( \"Usage:<S2SV_blank>ik<S2SV_blank>[sdb-query]\\\\n\" ) ; eprintf ( \"Usage:<S2SV_blank>ik*<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>#<S2SV_blank>load<S2SV_blank>all<S2SV_blank>header<S2SV_blank>information\\\\n\" ) ; } goto done ; break ; case 'o' : { if ( ! cf ) { eprintf ( \"Core<S2SV_blank>file<S2SV_blank>not<S2SV_blank>open\\\\n\" ) ; return 0 ; } const char * fn = input [ 1 ] == '<S2SV_blank>' ? input + 2 : cf -> desc -> name ; ut64 baddr = r_config_get_i ( core -> config , \"bin.baddr\" ) ; r_core_bin_load ( core , fn , baddr ) ; } break ; # define RBININFO ( n , x , y , z ) if ( is_array ) { if ( is_array == 1 ) { is_array ++ ; } else { r_cons_printf ( \",\" ) ; } r_cons_printf ( \"\\\\\"%s\\\\\":\" , n ) ; } if ( z ) { playMsg ( core , n , z ) ; } r_core_bin_info ( core , x , mode , va , NULL , y ) ; case 'A' : newline = false ; if ( input [ 1 ] == 'j' ) { r_cons_printf ( \"{\" ) ; r_bin_list_archs ( core -> bin , 'j' ) ; r_cons_printf ( \"}\\\\n\" ) ; } else { r_bin_list_archs ( core -> bin , 1 ) ; } break ; case 'E' : RBININFO ( \"exports\" , R_CORE_BIN_ACC_EXPORTS , NULL , 0 ) ; break ; case 'Z' : RBININFO ( \"size\" , R_CORE_BIN_ACC_SIZE , NULL , 0 ) ; break ; case 'S' : if ( ( input [ 1 ] == 'm' && input [ 2 ] == 'z' ) || ! input [ 1 ] ) { RBININFO ( \"sections\" , R_CORE_BIN_ACC_SECTIONS , NULL , 0 ) ; } else { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; if ( mode == R_CORE_BIN_RADARE || mode == R_CORE_BIN_JSON || mode == R_CORE_BIN_SIMPLE ) { RBININFO ( \"sections\" , R_CORE_BIN_ACC_SECTIONS , input + 2 , obj ? r_list_length ( obj -> sections ) : 0 ) ; } else { RBININFO ( \"sections\" , R_CORE_BIN_ACC_SECTIONS , input + 1 , obj ? r_list_length ( obj -> sections ) : 0 ) ; } while ( * ( ++ input ) ) ; input -- ; } break ; case 'H' : if ( input [ 1 ] == 'H' ) { RBININFO ( \"header\" , R_CORE_BIN_ACC_HEADER , NULL , - 1 ) ; break ; } case 'h' : RBININFO ( \"fields\" , R_CORE_BIN_ACC_FIELDS , NULL , 0 ) ; break ; <S2SV_StartBug> case 'l' : RBININFO ( \"libs\" , R_CORE_BIN_ACC_LIBS , NULL , obj ? r_list_length ( obj -> libs ) : 0 ) ; break ; <S2SV_EndBug> case 'L' : { char * ptr = strchr ( input , '<S2SV_blank>' ) ; int json = input [ 1 ] == 'j' ? 'j' : 0 ; if ( ptr && ptr [ 1 ] ) { const char * plugin_name = ptr + 1 ; if ( is_array ) { r_cons_printf ( \"\\\\\"plugin\\\\\":<S2SV_blank>\" ) ; } r_bin_list_plugin ( core -> bin , plugin_name , json ) ; } else { r_bin_list ( core -> bin , json ) ; } newline = false ; goto done ; } break ; case 's' : if ( input [ 1 ] == '.' ) { ut64 addr = core -> offset + ( core -> print -> cur_enabled ? core -> print -> cur : 0 ) ; RFlagItem * f = r_flag_get_at ( core -> flags , addr , false ) ; if ( f ) { if ( f -> offset == addr || ! f -> offset ) { r_cons_printf ( \"%s\" , f -> name ) ; } else { r_cons_printf ( \"%s+%d\" , f -> name , ( int ) ( addr - f -> offset ) ) ; } } input ++ ; break ; } else { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; RBININFO ( \"symbols\" , R_CORE_BIN_ACC_SYMBOLS , NULL , obj ? r_list_length ( obj -> symbols ) : 0 ) ; break ; } case 'R' : if ( input [ 1 ] == '*' ) { mode = R_CORE_BIN_RADARE ; } else if ( input [ 1 ] == 'j' ) { mode = R_CORE_BIN_JSON ; } RBININFO ( \"resources\" , R_CORE_BIN_ACC_RESOURCES , NULL , 0 ) ; break ; case 'r' : RBININFO ( \"relocs\" , R_CORE_BIN_ACC_RELOCS , NULL , 0 ) ; break ; case 'd' : RBININFO ( \"dwarf\" , R_CORE_BIN_ACC_DWARF , NULL , - 1 ) ; break ; <S2SV_StartBug> case 'i' : RBININFO ( \"imports\" , R_CORE_BIN_ACC_IMPORTS , NULL , obj ? r_list_length ( obj -> imports ) : 0 ) ; break ; <S2SV_EndBug> case 'I' : RBININFO ( \"info\" , R_CORE_BIN_ACC_INFO , NULL , 0 ) ; break ; case 'e' : RBININFO ( \"entries\" , R_CORE_BIN_ACC_ENTRIES , NULL , 0 ) ; break ; case 'M' : RBININFO ( \"main\" , R_CORE_BIN_ACC_MAIN , NULL , 0 ) ; break ; case 'm' : RBININFO ( \"memory\" , R_CORE_BIN_ACC_MEM , NULL , 0 ) ; break ; case 'V' : RBININFO ( \"versioninfo\" , R_CORE_BIN_ACC_VERSIONINFO , NULL , 0 ) ; break ; case 'C' : RBININFO ( \"signature\" , R_CORE_BIN_ACC_SIGNATURE , NULL , 0 ) ; break ; case 'z' : if ( input [ 1 ] == 'z' ) { switch ( input [ 2 ] ) { case '*' : mode = R_CORE_BIN_RADARE ; break ; case 'j' : mode = R_CORE_BIN_JSON ; break ; case 'q' : if ( input [ 3 ] == 'q' ) { mode = R_CORE_BIN_SIMPLEST ; input ++ ; } else { mode = R_CORE_BIN_SIMPLE ; } break ; default : mode = R_CORE_BIN_PRINT ; break ; } input ++ ; RBININFO ( \"strings\" , R_CORE_BIN_ACC_RAW_STRINGS , NULL , 0 ) ; } else { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; if ( input [ 1 ] == 'q' ) { mode = ( input [ 2 ] == 'q' ) ? R_CORE_BIN_SIMPLEST : R_CORE_BIN_SIMPLE ; input ++ ; } if ( obj ) { RBININFO ( \"strings\" , R_CORE_BIN_ACC_STRINGS , NULL , obj ? r_list_length ( obj -> strings ) : 0 ) ; } } break ; case 'c' : if ( input [ 1 ] == '?' ) { eprintf ( \"Usage:<S2SV_blank>ic[ljq*]<S2SV_blank>[class-index<S2SV_blank>or<S2SV_blank>name]\\\\n\" ) ; } else if ( input [ 1 ] == '<S2SV_blank>' || input [ 1 ] == 'q' || input [ 1 ] == 'j' || input [ 1 ] == 'l' ) { RBinClass * cls ; RBinSymbol * sym ; RListIter * iter , * iter2 ; RBinObject * obj = r_bin_cur_object ( core -> bin ) ; if ( obj ) { if ( input [ 2 ] ) { int idx = - 1 ; const char * cls_name = NULL ; if ( r_num_is_valid_input ( core -> num , input + 2 ) ) { idx = r_num_math ( core -> num , input + 2 ) ; } else { const char * first_char = input + ( ( input [ 1 ] == '<S2SV_blank>' ) ? 1 : 2 ) ; int not_space = strspn ( first_char , \"<S2SV_blank>\" ) ; if ( first_char [ not_space ] ) { cls_name = first_char + not_space ; } } int count = 0 ; r_list_foreach ( obj -> classes , iter , cls ) { if ( ( idx >= 0 && idx != count ++ ) || ( cls_name && strcmp ( cls_name , cls -> name ) != 0 ) ) { continue ; } switch ( input [ 1 ] ) { case '*' : r_list_foreach ( cls -> methods , iter2 , sym ) { r_cons_printf ( \"f<S2SV_blank>sym.%s<S2SV_blank>@<S2SV_blank>0x%\" PFMT64x \"\\\\n\" , sym -> name , sym -> vaddr ) ; } input ++ ; break ; case 'l' : r_list_foreach ( cls -> methods , iter2 , sym ) { const char * comma = iter2 -> p ? \"<S2SV_blank>\" : \"\" ; r_cons_printf ( \"%s0x%\" PFMT64d , comma , sym -> vaddr ) ; } r_cons_newline ( ) ; input ++ ; break ; case 'j' : input ++ ; r_cons_printf ( \"\\\\\"class\\\\\":\\\\\"%s\\\\\"\" , cls -> name ) ; r_cons_printf ( \",\\\\\"methods\\\\\":[\" ) ; r_list_foreach ( cls -> methods , iter2 , sym ) { const char * comma = iter2 -> p ? \",\" : \"\" ; if ( sym -> method_flags ) { char * flags = r_core_bin_method_flags_str ( sym , R_CORE_BIN_JSON ) ; r_cons_printf ( \"%s{\\\\\"name\\\\\":\\\\\"%s\\\\\",\\\\\"flags\\\\\":%s,\\\\\"vaddr\\\\\":%\" PFMT64d \"}\" , comma , sym -> name , flags , sym -> vaddr ) ; R_FREE ( flags ) ; } else { r_cons_printf ( \"%s{\\\\\"name\\\\\":\\\\\"%s\\\\\",\\\\\"vaddr\\\\\":%\" PFMT64d \"}\" , comma , sym -> name , sym -> vaddr ) ; } } r_cons_printf ( \"]\" ) ; break ; default : r_cons_printf ( \"class<S2SV_blank>%s\\\\n\" , cls -> name ) ; r_list_foreach ( cls -> methods , iter2 , sym ) { char * flags = r_core_bin_method_flags_str ( sym , 0 ) ; r_cons_printf ( \"0x%08\" PFMT64x \"<S2SV_blank>method<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , sym -> vaddr , cls -> name , flags , sym -> name ) ; R_FREE ( flags ) ; } break ; } goto done ; } goto done ; } else { playMsg ( core , \"classes\" , r_list_length ( obj -> classes ) ) ; if ( input [ 1 ] == 'l' && obj ) { r_list_foreach ( obj -> classes , iter , cls ) { r_list_foreach ( cls -> methods , iter2 , sym ) { const char * comma = iter2 -> p ? \"<S2SV_blank>\" : \"\" ; r_cons_printf ( \"%s0x%\" PFMT64d , comma , sym -> vaddr ) ; } if ( ! r_list_empty ( cls -> methods ) ) { r_cons_newline ( ) ; } } } else { RBININFO ( \"classes\" , R_CORE_BIN_ACC_CLASSES , NULL , r_list_length ( obj -> classes ) ) ; } } } } else { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; int len = obj ? r_list_length ( obj -> classes ) : 0 ; RBININFO ( \"classes\" , R_CORE_BIN_ACC_CLASSES , NULL , len ) ; } break ; case 'D' : if ( input [ 1 ] != '<S2SV_blank>' || ! demangle ( core , input + 2 ) ) { eprintf ( \"|Usage:<S2SV_blank>iD<S2SV_blank>lang<S2SV_blank>symbolname\\\\n\" ) ; } return 0 ; case 'a' : switch ( mode ) { case R_CORE_BIN_RADARE : cmd_info ( core , \"iIiecsSmz*\" ) ; break ; case R_CORE_BIN_JSON : cmd_info ( core , \"iIiecsSmzj\" ) ; break ; case R_CORE_BIN_SIMPLE : cmd_info ( core , \"iIiecsSmzq\" ) ; break ; default : cmd_info ( core , \"IiEecsSmz\" ) ; break ; } break ; case '?' : { const char * help_message [ ] = { \"Usage:<S2SV_blank>i\" , \"\" , \"Get<S2SV_blank>info<S2SV_blank>from<S2SV_blank>opened<S2SV_blank>file<S2SV_blank>(see<S2SV_blank>rabin2\\'s<S2SV_blank>manpage)\" , \"Output<S2SV_blank>mode:\" , \"\" , \"\" , \"\\'*\\'\" , \"\" , \"Output<S2SV_blank>in<S2SV_blank>radare<S2SV_blank>commands\" , \"\\'j\\'\" , \"\" , \"Output<S2SV_blank>in<S2SV_blank>json\" , \"\\'q\\'\" , \"\" , \"Simple<S2SV_blank>quiet<S2SV_blank>output\" , \"Actions:\" , \"\" , \"\" , \"i|ij\" , \"\" , \"Show<S2SV_blank>info<S2SV_blank>of<S2SV_blank>current<S2SV_blank>file<S2SV_blank>(in<S2SV_blank>JSON)\" , \"iA\" , \"\" , \"List<S2SV_blank>archs\" , \"ia\" , \"\" , \"Show<S2SV_blank>all<S2SV_blank>info<S2SV_blank>(imports,<S2SV_blank>exports,<S2SV_blank>sections..)\" , \"ib\" , \"\" , \"Reload<S2SV_blank>the<S2SV_blank>current<S2SV_blank>buffer<S2SV_blank>for<S2SV_blank>setting<S2SV_blank>of<S2SV_blank>the<S2SV_blank>bin<S2SV_blank>(use<S2SV_blank>once<S2SV_blank>only)\" , \"ic\" , \"\" , \"List<S2SV_blank>classes,<S2SV_blank>methods<S2SV_blank>and<S2SV_blank>fields\" , \"iC\" , \"\" , \"Show<S2SV_blank>signature<S2SV_blank>info<S2SV_blank>(entitlements,<S2SV_blank>...)\" , \"id\" , \"\" , \"Debug<S2SV_blank>information<S2SV_blank>(source<S2SV_blank>lines)\" , \"iD\" , \"<S2SV_blank>lang<S2SV_blank>sym\" , \"demangle<S2SV_blank>symbolname<S2SV_blank>for<S2SV_blank>given<S2SV_blank>language\" , \"ie\" , \"\" , \"Entrypoint\" , \"iE\" , \"\" , \"Exports<S2SV_blank>(global<S2SV_blank>symbols)\" , \"ih\" , \"\" , \"Headers<S2SV_blank>(alias<S2SV_blank>for<S2SV_blank>iH)\" , \"iHH\" , \"\" , \"Verbose<S2SV_blank>Headers<S2SV_blank>in<S2SV_blank>raw<S2SV_blank>text\" , \"ii\" , \"\" , \"Imports\" , \"iI\" , \"\" , \"Binary<S2SV_blank>info\" , \"ik\" , \"<S2SV_blank>[query]\" , \"Key-value<S2SV_blank>database<S2SV_blank>from<S2SV_blank>RBinObject\" , \"il\" , \"\" , \"Libraries\" , \"iL<S2SV_blank>\" , \"[plugin]\" , \"List<S2SV_blank>all<S2SV_blank>RBin<S2SV_blank>plugins<S2SV_blank>loaded<S2SV_blank>or<S2SV_blank>plugin<S2SV_blank>details\" , \"im\" , \"\" , \"Show<S2SV_blank>info<S2SV_blank>about<S2SV_blank>predefined<S2SV_blank>memory<S2SV_blank>allocation\" , \"iM\" , \"\" , \"Show<S2SV_blank>main<S2SV_blank>address\" , \"io\" , \"<S2SV_blank>[file]\" , \"Load<S2SV_blank>info<S2SV_blank>from<S2SV_blank>file<S2SV_blank>(or<S2SV_blank>last<S2SV_blank>opened)<S2SV_blank>use<S2SV_blank>bin.baddr\" , \"ir\" , \"\" , \"Relocs\" , \"iR\" , \"\" , \"Resources\" , \"is\" , \"\" , \"Symbols\" , \"iS<S2SV_blank>\" , \"[entropy,sha1]\" , \"Sections<S2SV_blank>(choose<S2SV_blank>which<S2SV_blank>hash<S2SV_blank>algorithm<S2SV_blank>to<S2SV_blank>use)\" , \"iV\" , \"\" , \"Display<S2SV_blank>file<S2SV_blank>version<S2SV_blank>info\" , \"iz|izj\" , \"\" , \"Strings<S2SV_blank>in<S2SV_blank>data<S2SV_blank>sections<S2SV_blank>(in<S2SV_blank>JSON/Base64)\" , \"izz\" , \"\" , \"Search<S2SV_blank>for<S2SV_blank>Strings<S2SV_blank>in<S2SV_blank>the<S2SV_blank>whole<S2SV_blank>binary\" , \"iZ\" , \"\" , \"Guess<S2SV_blank>size<S2SV_blank>of<S2SV_blank>binary<S2SV_blank>program\" , NULL } ; r_core_cmd_help ( core , help_message ) ; } goto done ; case '*' : mode = R_CORE_BIN_RADARE ; goto done ; case 'q' : mode = R_CORE_BIN_SIMPLE ; cmd_info_bin ( core , va , mode ) ; goto done ; case 'j' : mode = R_CORE_BIN_JSON ; if ( is_array > 1 ) { mode |= R_CORE_BIN_ARRAY ; } cmd_info_bin ( core , va , mode ) ; goto done ; default : cmd_info_bin ( core , va , mode ) ; break ; } input ++ ; if ( ( * input == 'j' || * input == 'q' ) && ! input [ 1 ] ) { break ; } } done : if ( is_array ) { r_cons_printf ( \"}\\\\n\" ) ; } if ( newline ) { r_cons_newline ( ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 'l' : { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; <S2SV_ModStart> 0 ) ; } <S2SV_ModStart> case 'i' : { RBinObject * obj = r_bin_cur_object ( core -> bin ) ; <S2SV_ModStart> 0 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int read_inter_segment_id ( VP9_COMMON * const cm , MACROBLOCKD * const xd , <S2SV_StartBug> int mi_row , int mi_col , vp9_reader * r ) { <S2SV_EndBug> struct segmentation * const seg = & cm -> seg ; MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> const BLOCK_SIZE bsize = mbmi -> sb_type ; <S2SV_EndBug> int predicted_segment_id , segment_id ; if ( ! seg -> enabled ) return 0 ; <S2SV_StartBug> predicted_segment_id = vp9_get_segment_id ( cm , cm -> last_frame_seg_map , <S2SV_EndBug> bsize , mi_row , mi_col ) ; <S2SV_StartBug> if ( ! seg -> update_map ) <S2SV_EndBug> return predicted_segment_id ; <S2SV_StartBug> if ( seg -> temporal_update ) { <S2SV_EndBug> <S2SV_StartBug> const vp9_prob pred_prob = vp9_get_pred_prob_seg_id ( seg , xd ) ; <S2SV_EndBug> <S2SV_StartBug> mbmi -> seg_id_predicted = vp9_read ( r , pred_prob ) ; <S2SV_EndBug> segment_id = mbmi -> seg_id_predicted ? predicted_segment_id : read_segment_id ( r , seg ) ; } else { segment_id = read_segment_id ( r , seg ) ; } <S2SV_StartBug> set_segment_id ( cm , bsize , mi_row , mi_col , segment_id ) ; <S2SV_EndBug> return segment_id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mi_col , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> -> mbmi ; int predicted_segment_id , segment_id ; const int mi_offset = mi_row * cm -> mi_cols + mi_col ; const int bw = xd -> plane [ 0 ] . n4_w >> 1 ; const int bh = xd -> plane [ 0 ] . n4_h >> 1 ; const int x_mis = MIN ( cm -> mi_cols - mi_col , bw ) ; const int y_mis = MIN ( cm -> mi_rows - mi_row , bh ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; predicted_segment_id = <S2SV_ModEnd> cm -> last_frame_seg_map <S2SV_ModStart> cm -> last_frame_seg_map ? dec_get_segment_id ( cm , cm -> last_frame_seg_map , mi_offset , x_mis , y_mis ) : 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> update_map ) { copy_segment_id ( cm , cm -> last_frame_seg_map , cm -> current_frame_seg_map , mi_offset , x_mis , y_mis ) ; <S2SV_ModStart> return predicted_segment_id ; } <S2SV_ModStart> ) { const vpx_prob <S2SV_ModEnd> pred_prob = vp9_get_pred_prob_seg_id <S2SV_ModStart> -> seg_id_predicted = vpx_read <S2SV_ModEnd> ( r , <S2SV_ModStart> ( cm , mi_offset , x_mis , y_mis <S2SV_ModEnd> , segment_id )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6136\n\n```\nCWE-362 static void audit_log_execve_info ( struct audit_context * context , struct audit_buffer * * ab ) { <S2SV_StartBug> int i , len ; <S2SV_EndBug> size_t len_sent = 0 ; <S2SV_StartBug> const char __user * p ; <S2SV_EndBug> char * buf ; p = ( const char __user * ) current -> mm -> arg_start ; <S2SV_StartBug> audit_log_format ( * ab , \"argc=%d\" , context -> execve . argc ) ; <S2SV_EndBug> <S2SV_StartBug> buf = kmalloc ( MAX_EXECVE_AUDIT_LEN + 1 , GFP_KERNEL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! buf ) { <S2SV_EndBug> audit_panic ( \"out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>argv<S2SV_blank>string\" ) ; return ; } <S2SV_StartBug> for ( i = 0 ; i < context -> execve . argc ; i ++ ) { <S2SV_EndBug> len = audit_log_single_execve_arg ( context , ab , i , & len_sent , p , buf ) ; if ( len <= 0 ) break ; p += len ; } kfree ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ab ) { long len_max ; long len_rem ; long len_full ; long len_buf ; long len_abuf ; long len_tmp ; bool require_data ; bool encode ; unsigned int iter ; unsigned int arg ; char * buf_head ; char * buf <S2SV_ModEnd> ; const char <S2SV_ModStart> char __user * <S2SV_ModEnd> p = ( <S2SV_ModStart> -> arg_start ; char abuf [ 96 ] ; WARN_ON_ONCE ( MAX_EXECVE_AUDIT_LEN > 7500 ) ; len_max = MAX_EXECVE_AUDIT_LEN ; buf_head = kmalloc ( MAX_EXECVE_AUDIT_LEN + 1 , GFP_KERNEL ) ; if ( ! buf_head ) { audit_panic ( \"out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>argv<S2SV_blank>string\" ) ; return ; } buf = buf_head ; <S2SV_ModStart> argc ) ; len_rem = len_max ; len_buf = 0 ; len_full = 0 ; require_data = true ; encode = false ; iter = 0 ; arg = 0 ; do { if ( len_full == 0 ) len_full = strnlen_user ( p , MAX_ARG_STRLEN ) - 1 ; if ( require_data ) { if ( buf != buf_head ) { memmove ( buf_head , buf , len_buf ) ; buf = buf_head ; } len_tmp = strncpy_from_user ( & buf_head [ len_buf ] , p , len_max - len_buf ) ; if ( len_tmp == - EFAULT ) { send_sig ( SIGKILL , current , 0 ) ; goto out ; } else if ( len_tmp == ( len_max - len_buf ) ) { require_data = true ; encode = true ; len_full = len_full * 2 ; p += len_tmp ; } else { require_data = false ; if ( ! encode ) encode = audit_string_contains_control ( buf , len_tmp ) ; if ( len_full < len_max ) len_full = ( encode ? len_tmp * 2 : len_tmp ) ; p += len_tmp + 1 ; } len_buf += len_tmp ; buf_head [ len_buf ] = '\\\\0' ; len_abuf = ( encode ? len_buf * 2 : len_buf + 2 ) ; } if ( len_buf > 0 ) { if ( ( sizeof ( abuf ) + 8 ) > len_rem ) { len_rem = len_max ; audit_log_end ( * ab ) ; * ab = audit_log_start ( context , GFP_KERNEL , AUDIT_EXECVE <S2SV_ModEnd> ) ; if <S2SV_ModStart> if ( ! * ab ) goto out ; } len_tmp = 0 ; if ( require_data || ( iter > 0 ) || ( ( len_abuf + sizeof ( abuf ) ) > len_rem ) ) { if ( iter == 0 ) { len_tmp += snprintf ( & abuf [ len_tmp ] , sizeof ( abuf ) - len_tmp , \"<S2SV_blank>a%d_len=%lu\" , arg , len_full ) ; } len_tmp += snprintf ( & abuf [ len_tmp ] , sizeof ( abuf ) - len_tmp , \"<S2SV_blank>a%d[%d]=\" , arg , iter ++ ) ; } else len_tmp += snprintf ( & abuf [ len_tmp ] , sizeof ( abuf ) - len_tmp , \"<S2SV_blank>a%d=\" , arg ) ; WARN_ON ( len_tmp >= sizeof ( abuf ) ) ; abuf [ sizeof ( abuf ) - 1 ] = '\\\\0' ; audit_log_format ( * ab , \"%s\" , abuf ) ; len_rem -= len_tmp ; len_tmp = len_buf ; if ( encode ) { if ( len_abuf > len_rem ) len_tmp = len_rem / 2 ; audit_log_n_hex ( * ab , buf , len_tmp ) ; len_rem -= len_tmp * 2 ; len_abuf -= len_tmp * 2 ; } else { if ( len_abuf > len_rem ) len_tmp = len_rem - 2 ; audit_log_n_string ( * ab , buf , len_tmp ) ; len_rem -= len_tmp + 2 ; len_abuf -= len_tmp ; } len_buf -= len_tmp ; buf += len_tmp ; } if ( ( len_buf == 0 ) && ! require_data ) { arg ++ ; iter = 0 ; len_full = 0 ; require_data = true ; encode = false ; } } while ( arg <S2SV_ModEnd> < context -> <S2SV_ModStart> execve . argc ) ; out : kfree ( buf_head <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8071\n\n```\nCWE-404 static int cp2112_gpio_get_all ( struct gpio_chip * chip ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> int ret ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> ret = hid_hw_raw_request ( hdev , CP2112_GPIO_GET , buf , CP2112_GPIO_GET_LENGTH , HID_FEATURE_REPORT , HID_REQ_GET_REPORT ) ; if ( ret != CP2112_GPIO_GET_LENGTH ) { hid_err ( hdev , \"error<S2SV_blank>requesting<S2SV_blank>GPIO<S2SV_blank>values:<S2SV_blank>%d\\\\n\" , ret ) ; ret = ret < 0 ? ret : - EIO ; goto exit ; } ret = buf [ 1 ] ; exit : <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> in_out_buffer ; <S2SV_ModEnd> int ret ; <S2SV_ModStart> int ret ; mutex_lock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; ret <S2SV_ModStart> ; exit : mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16357\n\n```\nCWE-119 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; <S2SV_StartBug> if ( shdr -> sh_size < 1 ) { <S2SV_EndBug> return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; for ( cnt = 0 , i = 0 ; i >= 0 && cnt < shdr -> sh_info && ( ( char * ) defs + i < end ) ; ++ cnt ) { Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; char key [ 32 ] = { 0 } ; Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) int vdaux = verdef -> vd_aux ; if ( vdaux < 1 ) { sdb_free ( sdb_verdef ) ; goto out_error ; } vstart += vdaux ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; } i += verdef -> vd_next ; } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sh_size < 1 || shdr -> sh_size > SIZE_MAX\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 jpc_ms_t * jpc_getms ( jas_stream_t * in , jpc_cstate_t * cstate ) { jpc_ms_t * ms ; jpc_mstabent_t * mstabent ; jas_stream_t * tmpstream ; if ( ! ( ms = jpc_ms_create ( 0 ) ) ) { return 0 ; } if ( jpc_getuint16 ( in , & ms -> id ) || ms -> id < JPC_MS_MIN || ms -> id > JPC_MS_MAX ) { jpc_ms_destroy ( ms ) ; return 0 ; } mstabent = jpc_mstab_lookup ( ms -> id ) ; ms -> ops = & mstabent -> ops ; if ( JPC_MS_HASPARMS ( ms -> id ) ) { if ( jpc_getuint16 ( in , & ms -> len ) || ms -> len < 3 ) { jpc_ms_destroy ( ms ) ; return 0 ; } ms -> len -= 2 ; if ( ! ( tmpstream = jas_stream_memopen ( 0 , 0 ) ) ) { jpc_ms_destroy ( ms ) ; return 0 ; } if ( jas_stream_copy ( tmpstream , in , ms -> len ) || jas_stream_seek ( tmpstream , 0 , SEEK_SET ) < 0 ) { jas_stream_close ( tmpstream ) ; jpc_ms_destroy ( ms ) ; return 0 ; } if ( ( * ms -> ops -> getparms ) ( ms , cstate , tmpstream ) ) { ms -> ops = 0 ; jpc_ms_destroy ( ms ) ; jas_stream_close ( tmpstream ) ; return 0 ; } if ( jas_getdbglevel ( ) > 0 ) { jpc_ms_dump ( ms , stderr ) ; } <S2SV_StartBug> if ( JAS_CAST ( ulong , jas_stream_tell ( tmpstream ) ) != ms -> len ) { <S2SV_EndBug> jas_eprintf ( \"warning:<S2SV_blank>trailing<S2SV_blank>garbage<S2SV_blank>in<S2SV_blank>marker<S2SV_blank>segment<S2SV_blank>(%ld<S2SV_blank>bytes)\\\\n\" , ms -> len - jas_stream_tell ( tmpstream ) ) ; } jas_stream_close ( tmpstream ) ; } else { ms -> len = 0 ; if ( jas_getdbglevel ( ) > 0 ) { jpc_ms_dump ( ms , stderr ) ; } } if ( ms -> id == JPC_MS_SIZ ) { cstate -> numcomps = ms -> parms . siz . numcomps ; } return ms ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( JAS_CAST ( jas_ulong <S2SV_ModEnd> , jas_stream_tell (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2847\n\n```\nCWE-399 void free_pipe_info ( struct pipe_inode_info * pipe ) { <S2SV_StartBug> int i ; <S2SV_EndBug> for ( i = 0 ; i < pipe -> buffers ; i ++ ) { struct pipe_buffer * buf = pipe -> bufs + i ; if ( buf -> ops ) buf -> ops -> release ( pipe , buf ) ; } if ( pipe -> tmp_page ) __free_page ( pipe -> tmp_page ) ; kfree ( pipe -> bufs ) ; kfree ( pipe ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { int i ; account_pipe_buffers ( pipe , pipe -> buffers , 0 ) ; free_uid ( pipe -> user )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3315\n\n```\nCWE-59 int main ( int argc , char * * argv ) { int fd = xopen ( \"/dev/null\" , O_RDWR ) ; while ( fd < 2 ) fd = xdup ( fd ) ; if ( fd > 2 ) close ( fd ) ; if ( argc < 8 ) { error_msg_and_die ( \"Usage:<S2SV_blank>%s<S2SV_blank>SIGNO<S2SV_blank>CORE_SIZE_LIMIT<S2SV_blank>PID<S2SV_blank>UID<S2SV_blank>GID<S2SV_blank>TIME<S2SV_blank>BINARY_NAME<S2SV_blank>[HOSTNAME]\" , argv [ 0 ] ) ; } if ( strchr ( argv [ 1 ] , '<S2SV_blank>' ) ) { int i ; for ( i = 1 ; argv [ i ] ; i ++ ) { strchrnul ( argv [ i ] , '<S2SV_blank>' ) [ 0 ] = '\\\\0' ; } } logmode = LOGMODE_JOURNAL ; load_abrt_conf ( ) ; bool setting_MakeCompatCore ; bool setting_SaveBinaryImage ; { map_string_t * settings = new_map_string ( ) ; load_abrt_plugin_conf_file ( \"CCpp.conf\" , settings ) ; const char * value ; value = get_map_string_item_or_NULL ( settings , \"MakeCompatCore\" ) ; setting_MakeCompatCore = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"SaveBinaryImage\" ) ; setting_SaveBinaryImage = value && string_to_bool ( value ) ; value = get_map_string_item_or_NULL ( settings , \"VerboseLog\" ) ; if ( value ) g_verbose = xatoi_positive ( value ) ; free_map_string ( settings ) ; } errno = 0 ; const char * signal_str = argv [ 1 ] ; int signal_no = xatoi_positive ( signal_str ) ; off_t ulimit_c = strtoull ( argv [ 2 ] , NULL , 10 ) ; if ( ulimit_c < 0 ) { ulimit_c = ~ ( ( off_t ) 1 << ( sizeof ( off_t ) * 8 - 1 ) ) ; } const char * pid_str = argv [ 3 ] ; pid_t pid = xatoi_positive ( argv [ 3 ] ) ; uid_t uid = xatoi_positive ( argv [ 4 ] ) ; if ( errno || pid <= 0 ) { perror_msg_and_die ( \"PID<S2SV_blank>\\'%s\\'<S2SV_blank>or<S2SV_blank>limit<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>bogus\" , argv [ 3 ] , argv [ 2 ] ) ; } { char * s = xmalloc_fopen_fgetline_fclose ( VAR_RUN \"/abrt/saved_core_pattern\" ) ; if ( s && s [ 0 ] != '|' ) core_basename = s ; else free ( s ) ; } struct utsname uts ; if ( ! argv [ 8 ] ) { uname ( & uts ) ; argv [ 8 ] = uts . nodename ; } char path [ PATH_MAX ] ; int src_fd_binary = - 1 ; char * executable = get_executable ( pid , setting_SaveBinaryImage ? & src_fd_binary : NULL ) ; if ( executable && strstr ( executable , \"/abrt-hook-ccpp\" ) ) { error_msg_and_die ( \"PID<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>\\'%s\\',<S2SV_blank>not<S2SV_blank>dumping<S2SV_blank>it<S2SV_blank>to<S2SV_blank>avoid<S2SV_blank>recursion\" , ( long ) pid , executable ) ; } user_pwd = get_cwd ( pid ) ; log_notice ( \"user_pwd:\\'%s\\'\" , user_pwd ) ; sprintf ( path , \"/proc/%lu/status\" , ( long ) pid ) ; proc_pid_status = xmalloc_xopen_read_close ( path , NULL ) ; uid_t fsuid = uid ; uid_t tmp_fsuid = get_fsuid ( ) ; int suid_policy = dump_suid_policy ( ) ; if ( tmp_fsuid != uid ) { fsuid = 0 ; if ( suid_policy == DUMP_SUID_UNSAFE ) { fsuid = tmp_fsuid ; } } if ( setting_MakeCompatCore && ulimit_c != 0 ) user_core_fd = open_user_core ( uid , fsuid , pid , & argv [ 1 ] ) ; if ( executable == NULL ) { error_msg ( \"Can\\'t<S2SV_blank>read<S2SV_blank>/proc/%lu/exe<S2SV_blank>link\" , ( long ) pid ) ; goto create_user_core ; } const char * signame = NULL ; switch ( signal_no ) { case SIGILL : signame = \"ILL\" ; break ; case SIGFPE : signame = \"FPE\" ; break ; case SIGSEGV : signame = \"SEGV\" ; break ; case SIGBUS : signame = \"BUS\" ; break ; case SIGABRT : signame = \"ABRT\" ; break ; case SIGTRAP : signame = \"TRAP\" ; break ; default : goto create_user_core ; } if ( ! daemon_is_ok ( ) ) { log ( \"abrtd<S2SV_blank>is<S2SV_blank>not<S2SV_blank>running.<S2SV_blank>If<S2SV_blank>it<S2SV_blank>crashed,<S2SV_blank>\" \"/proc/sys/kernel/core_pattern<S2SV_blank>contains<S2SV_blank>a<S2SV_blank>stale<S2SV_blank>value,<S2SV_blank>\" \"consider<S2SV_blank>resetting<S2SV_blank>it<S2SV_blank>to<S2SV_blank>\\'core\\'\" ) ; goto create_user_core ; } if ( g_settings_nMaxCrashReportsSize > 0 ) { if ( low_free_space ( g_settings_nMaxCrashReportsSize , g_settings_dump_location ) ) goto create_user_core ; } snprintf ( path , sizeof ( path ) , \"%s/last-ccpp\" , g_settings_dump_location ) ; if ( check_recent_crash_file ( path , executable ) ) { goto create_user_core ; } const char * last_slash = strrchr ( executable , '/' ) ; if ( last_slash && strncmp ( ++ last_slash , \"abrt\" , 4 ) == 0 ) { snprintf ( path , sizeof ( path ) , \"%s/%s-coredump\" , g_settings_dump_location , last_slash ) ; int abrt_core_fd = xopen3 ( path , O_WRONLY | O_CREAT | O_TRUNC , 0600 ) ; off_t core_size = copyfd_eof ( STDIN_FILENO , abrt_core_fd , COPYFD_SPARSE ) ; if ( core_size < 0 || fsync ( abrt_core_fd ) != 0 ) { unlink ( path ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; return 0 ; } unsigned path_len = snprintf ( path , sizeof ( path ) , \"%s/ccpp-%s-%lu.new\" , g_settings_dump_location , iso_date_string ( NULL ) , ( long ) pid ) ; if ( path_len >= ( sizeof ( path ) - sizeof ( \"/\" FILENAME_COREDUMP ) ) ) { goto create_user_core ; } dd = dd_create ( path , fsuid , DEFAULT_DUMP_DIR_MODE ) ; if ( dd ) { char * rootdir = get_rootdir ( pid ) ; <S2SV_StartBug> dd_create_basic_files ( dd , fsuid , ( rootdir && strcmp ( rootdir , \"/\" ) != 0 ) ? rootdir : NULL ) ; <S2SV_EndBug> char source_filename [ sizeof ( \"/proc/%lu/somewhat_long_name\" ) + sizeof ( long ) * 3 ] ; int source_base_ofs = sprintf ( source_filename , \"/proc/%lu/smaps\" , ( long ) pid ) ; source_base_ofs -= strlen ( \"smaps\" ) ; char * dest_filename = concat_path_file ( dd -> dd_dirname , \"also_somewhat_longish_name\" ) ; char * dest_base = strrchr ( dest_filename , '/' ) + 1 ; strcpy ( source_filename + source_base_ofs , \"maps\" ) ; strcpy ( dest_base , FILENAME_MAPS ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( source_filename + source_base_ofs , \"limits\" ) ; strcpy ( dest_base , FILENAME_LIMITS ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( source_filename + source_base_ofs , \"cgroup\" ) ; strcpy ( dest_base , FILENAME_CGROUP ) ; copy_file_ext ( source_filename , dest_filename , 0640 , dd -> dd_uid , dd -> dd_gid , O_RDONLY , O_WRONLY | O_CREAT | O_TRUNC | O_EXCL ) ; strcpy ( dest_base , FILENAME_OPEN_FDS ) ; dump_fd_info ( dest_filename , source_filename , source_base_ofs , dd -> dd_uid , dd -> dd_gid ) ; free ( dest_filename ) ; dd_save_text ( dd , FILENAME_ANALYZER , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_TYPE , \"CCpp\" ) ; dd_save_text ( dd , FILENAME_EXECUTABLE , executable ) ; dd_save_text ( dd , FILENAME_PID , pid_str ) ; dd_save_text ( dd , FILENAME_PROC_PID_STATUS , proc_pid_status ) ; if ( user_pwd ) dd_save_text ( dd , FILENAME_PWD , user_pwd ) ; if ( rootdir ) { if ( strcmp ( rootdir , \"/\" ) != 0 ) dd_save_text ( dd , FILENAME_ROOTDIR , rootdir ) ; } char * reason = xasprintf ( \"%s<S2SV_blank>killed<S2SV_blank>by<S2SV_blank>SIG%s\" , last_slash , signame ? signame : signal_str ) ; dd_save_text ( dd , FILENAME_REASON , reason ) ; free ( reason ) ; char * cmdline = get_cmdline ( pid ) ; dd_save_text ( dd , FILENAME_CMDLINE , cmdline ? : \"\" ) ; free ( cmdline ) ; char * environ = get_environ ( pid ) ; dd_save_text ( dd , FILENAME_ENVIRON , environ ? : \"\" ) ; free ( environ ) ; char * fips_enabled = xmalloc_fopen_fgetline_fclose ( \"/proc/sys/crypto/fips_enabled\" ) ; if ( fips_enabled ) { if ( strcmp ( fips_enabled , \"0\" ) != 0 ) dd_save_text ( dd , \"fips_enabled\" , fips_enabled ) ; free ( fips_enabled ) ; } dd_save_text ( dd , FILENAME_ABRT_VERSION , VERSION ) ; if ( src_fd_binary > 0 ) { strcpy ( path + path_len , \"/\" FILENAME_BINARY ) ; int dst_fd = create_or_die ( path ) ; off_t sz = copyfd_eof ( src_fd_binary , dst_fd , COPYFD_SPARSE ) ; if ( fsync ( dst_fd ) != 0 || close ( dst_fd ) != 0 || sz < 0 ) { dd_delete ( dd ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } close ( src_fd_binary ) ; } strcpy ( path + path_len , \"/\" FILENAME_COREDUMP ) ; int abrt_core_fd = create_or_die ( path ) ; off_t core_size = copyfd_sparse ( STDIN_FILENO , abrt_core_fd , user_core_fd , ulimit_c ) ; if ( fsync ( abrt_core_fd ) != 0 || close ( abrt_core_fd ) != 0 || core_size < 0 ) { unlink ( path ) ; dd_delete ( dd ) ; if ( user_core_fd >= 0 ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; } error_msg_and_die ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , path ) ; } if ( user_core_fd >= 0 && ( fsync ( user_core_fd ) != 0 || close ( user_core_fd ) != 0 || ( ulimit_c == 0 || core_size > ulimit_c ) ) ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; } # if 0 { char * java_log = xasprintf ( \"/tmp/jvm-%lu/hs_error.log\" , ( long ) pid ) ; int src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; if ( src_fd < 0 ) { java_log = xasprintf ( \"%s/hs_err_pid%lu.log\" , user_pwd , ( long ) pid ) ; src_fd = open ( java_log , O_RDONLY ) ; free ( java_log ) ; } if ( src_fd >= 0 ) { strcpy ( path + path_len , \"/hs_err.log\" ) ; int dst_fd = create_or_die ( path ) ; off_t sz = copyfd_eof ( src_fd , dst_fd , COPYFD_SPARSE ) ; if ( close ( dst_fd ) != 0 || sz < 0 ) { dd_delete ( dd ) ; error_msg_and_die ( \"Error<S2SV_blank>saving<S2SV_blank>\\'%s\\'\" , path ) ; } close ( src_fd ) ; } } # endif dd_close ( dd ) ; path [ path_len ] = '\\\\0' ; char * newpath = xstrndup ( path , path_len - ( sizeof ( \".new\" ) - 1 ) ) ; if ( rename ( path , newpath ) == 0 ) strcpy ( path , newpath ) ; free ( newpath ) ; log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , executable , path , ( long long ) core_size ) ; notify_new_path ( path ) ; if ( g_settings_nMaxCrashReportsSize > 0 ) { unsigned maxsize = g_settings_nMaxCrashReportsSize + g_settings_nMaxCrashReportsSize / 4 ; maxsize |= 63 ; trim_problem_dirs ( g_settings_dump_location , maxsize * ( double ) ( 1024 * 1024 ) , path ) ; } free ( rootdir ) ; return 0 ; } create_user_core : if ( user_core_fd >= 0 ) { off_t core_size = copyfd_size ( STDIN_FILENO , user_core_fd , ulimit_c , COPYFD_SPARSE ) ; if ( fsync ( user_core_fd ) != 0 || close ( user_core_fd ) != 0 || core_size < 0 ) { perror_msg ( \"Error<S2SV_blank>writing<S2SV_blank>\\'%s\\'\" , full_core_basename ) ; xchdir ( user_pwd ) ; unlink ( core_basename ) ; return 1 ; } if ( ulimit_c == 0 || core_size > ulimit_c ) { xchdir ( user_pwd ) ; unlink ( core_basename ) ; return 1 ; } log ( \"Saved<S2SV_blank>core<S2SV_blank>dump<S2SV_blank>of<S2SV_blank>pid<S2SV_blank>%lu<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>(%llu<S2SV_blank>bytes)\" , ( long ) pid , full_core_basename , ( long long ) core_size ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , fsuid , <S2SV_ModEnd> NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15148\n\n```\nCWE-787 <S2SV_StartBug> double GetGPMFSampleRate ( size_t handle , uint32_t fourcc , uint32_t flags ) <S2SV_EndBug> { mp4object * mp4 = ( mp4object * ) handle ; if ( mp4 == NULL ) return 0.0 ; GPMF_stream metadata_stream , * ms = & metadata_stream ; uint32_t teststart = 0 ; uint32_t testend = mp4 -> indexcount ; <S2SV_StartBug> double rate = 0.0 ; <S2SV_EndBug> if ( mp4 -> indexcount < 1 ) return 0.0 ; <S2SV_StartBug> if ( mp4 -> indexcount > 3 ) <S2SV_EndBug> { teststart ++ ; <S2SV_StartBug> testend -- ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> uint32_t * payload = GetPayload ( handle , NULL , teststart ) ; <S2SV_EndBug> <S2SV_StartBug> uint32_t payloadsize = GetPayloadSize ( handle , teststart ) ; <S2SV_EndBug> int32_t ret = GPMF_Init ( ms , payload , payloadsize ) ; <S2SV_StartBug> if ( ret != GPMF_OK ) <S2SV_EndBug> goto cleanup ; { uint32_t startsamples = 0 ; uint32_t endsamples = 0 ; uint32_t missing_samples = 0 ; while ( ret == GPMF_OK && GPMF_OK != GPMF_FindNext ( ms , fourcc , GPMF_RECURSE_LEVELS ) ) <S2SV_StartBug> { <S2SV_EndBug> missing_samples = 1 ; teststart ++ ; <S2SV_StartBug> payload = GetPayload ( handle , payload , teststart ) ; <S2SV_EndBug> <S2SV_StartBug> payloadsize = GetPayloadSize ( handle , teststart ) ; <S2SV_EndBug> <S2SV_StartBug> ret = GPMF_Init ( ms , payload , payloadsize ) ; <S2SV_EndBug> } if ( missing_samples ) { teststart ++ ; payload = GetPayload ( handle , payload , teststart ) ; payloadsize = GetPayloadSize ( handle , teststart ) ; ret = GPMF_Init ( ms , payload , payloadsize ) ; } if ( ret == GPMF_OK ) { <S2SV_StartBug> uint32_t samples = GPMF_Repeat ( ms ) ; <S2SV_EndBug> GPMF_stream find_stream ; GPMF_CopyState ( ms , & find_stream ) ; <S2SV_StartBug> if ( ! ( flags & GPMF_SAMPLE_RATE_PRECISE ) && GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TOTAL_SAMPLES , GPMF_CURRENT_LEVEL ) ) <S2SV_EndBug> { startsamples = BYTESWAP32 ( * ( uint32_t * ) GPMF_RawData ( & find_stream ) ) - samples ; payload = GetPayload ( handle , payload , testend ) ; payloadsize = GetPayloadSize ( handle , testend ) ; ret = GPMF_Init ( ms , payload , payloadsize ) ; if ( ret != GPMF_OK ) goto cleanup ; if ( GPMF_OK == GPMF_FindNext ( ms , fourcc , GPMF_RECURSE_LEVELS ) ) { GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TOTAL_SAMPLES , GPMF_CURRENT_LEVEL ) ) { endsamples = BYTESWAP32 ( * ( uint32_t * ) GPMF_RawData ( & find_stream ) ) ; rate = ( double ) ( endsamples - startsamples ) / ( mp4 -> metadatalength * ( ( double ) ( testend - teststart + 1 ) ) / ( double ) mp4 -> indexcount ) ; <S2SV_StartBug> goto cleanup ; <S2SV_EndBug> } } rate = ( double ) ( samples ) / ( mp4 -> metadatalength * ( ( double ) ( testend - teststart + 1 ) ) / ( double ) mp4 -> indexcount ) ; <S2SV_StartBug> } <S2SV_EndBug> else { uint32_t payloadpos = 0 , payloadcount = 0 ; double slope , top = 0.0 , bot = 0.0 , meanX = 0 , meanY = 0 ; <S2SV_StartBug> uint32_t * repeatarray = malloc ( mp4 -> indexcount * 4 + 4 ) ; <S2SV_EndBug> memset ( repeatarray , 0 , mp4 -> indexcount * 4 + 4 ) ; samples = 0 ; <S2SV_StartBug> for ( payloadpos = teststart ; payloadpos < testend ; payloadcount ++ , payloadpos ++ ) <S2SV_EndBug> { payload = GetPayload ( handle , payload , payloadpos ) ; payloadsize = GetPayloadSize ( handle , payloadpos ) ; ret = GPMF_Init ( ms , payload , payloadsize ) ; if ( ret != GPMF_OK ) goto cleanup ; <S2SV_StartBug> if ( GPMF_OK == GPMF_FindNext ( ms , fourcc , GPMF_RECURSE_LEVELS ) ) <S2SV_EndBug> { GPMF_stream find_stream2 ; GPMF_CopyState ( ms , & find_stream2 ) ; if ( GPMF_OK == GPMF_FindNext ( & find_stream2 , fourcc , GPMF_CURRENT_LEVEL ) ) { if ( repeatarray ) { <S2SV_StartBug> float in , out ; <S2SV_EndBug> do { samples ++ ; } while ( GPMF_OK == GPMF_FindNext ( ms , fourcc , GPMF_CURRENT_LEVEL ) ) ; repeatarray [ payloadpos ] = samples ; meanY += ( double ) samples ; <S2SV_StartBug> GetPayloadTime ( handle , payloadpos , & in , & out ) ; <S2SV_EndBug> meanX += out ; } } else { <S2SV_StartBug> uint32_t repeat = GPMF_Repeat ( ms ) ; <S2SV_EndBug> samples += repeat ; if ( repeatarray ) { <S2SV_StartBug> float in , out ; <S2SV_EndBug> repeatarray [ payloadpos ] = samples ; meanY += ( double ) samples ; <S2SV_StartBug> GetPayloadTime ( handle , payloadpos , & in , & out ) ; <S2SV_EndBug> meanX += out ; } } } <S2SV_StartBug> } <S2SV_EndBug> if ( repeatarray ) { meanY /= ( double ) payloadcount ; meanX /= ( double ) payloadcount ; for ( payloadpos = teststart ; payloadpos < testend ; payloadpos ++ ) { float in , out ; GetPayloadTime ( handle , payloadpos , & in , & out ) ; <S2SV_StartBug> top += ( ( double ) out - meanX ) * ( ( double ) repeatarray [ payloadpos ] - meanY ) ; <S2SV_EndBug> <S2SV_StartBug> bot += ( ( double ) out - meanX ) * ( ( double ) out - meanX ) ; <S2SV_EndBug> } slope = top / bot ; <S2SV_StartBug> # if 0 <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> double intercept ; intercept = meanY - slope * meanX ; <S2SV_StartBug> printf ( \"%c%c%c%c<S2SV_blank>start<S2SV_blank>offset<S2SV_blank>=<S2SV_blank>%f<S2SV_blank>(%.3fms)\\\\n\" , PRINTF_4CC ( fourcc ) , intercept , 1000.0 * intercept / slope ) ; <S2SV_EndBug> } # endif rate = slope ; } else { rate = ( double ) ( samples ) / ( mp4 -> metadatalength * ( ( double ) ( testend - teststart + 1 ) ) / ( double ) mp4 -> indexcount ) ; } free ( repeatarray ) ; <S2SV_StartBug> goto cleanup ; <S2SV_EndBug> } } } cleanup : if ( payload ) <S2SV_StartBug> { <S2SV_EndBug> FreePayload ( payload ) ; payload = NULL ; <S2SV_StartBug> } <S2SV_EndBug> return rate ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , uint32_t flags , double * firstsampletime , double * lastsampletime <S2SV_ModStart> rate = 0.0 ; uint32_t * payload ; uint32_t payloadsize ; int32_t ret <S2SV_ModStart> return 0.0 ; payload = GetPayload ( handle , NULL , teststart ) ; payloadsize = GetPayloadSize ( handle , teststart ) ; ret = GPMF_Init ( ms , payload , payloadsize ) ; if ( ret != GPMF_OK ) goto cleanup ; { uint64_t minimumtimestamp = 0 ; uint64_t starttimestamp = 0 ; uint64_t endtimestamp = 0 ; uint32_t startsamples = 0 ; uint32_t endsamples = 0 ; double intercept = 0.0 ; while ( teststart < <S2SV_ModEnd> mp4 -> indexcount <S2SV_ModStart> mp4 -> indexcount && ret == GPMF_OK && GPMF_OK != GPMF_FindNext ( ms , fourcc , GPMF_RECURSE_LEVELS ) <S2SV_ModEnd> ) { teststart <S2SV_ModStart> teststart ++ ; payload = GetPayload ( handle , payload , teststart ) ; payloadsize = GetPayloadSize ( handle , teststart ) ; ret = GPMF_Init ( ms , payload , payloadsize ) ; } if ( ret == GPMF_OK && payload ) { uint32_t samples = GPMF_PayloadSampleCount ( ms ) ; GPMF_stream find_stream ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TOTAL_SAMPLES , GPMF_CURRENT_LEVEL ) ) startsamples = BYTESWAP32 ( * ( uint32_t * ) GPMF_RawData ( & find_stream ) ) - samples ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TIME_STAMP , GPMF_CURRENT_LEVEL ) ) starttimestamp = BYTESWAP64 ( * ( uint64_t * ) GPMF_RawData ( & find_stream ) ) ; if ( starttimestamp ) { GPMF_stream any_stream ; GPMF_Init ( & any_stream , payload , payloadsize ) ; minimumtimestamp = starttimestamp ; while ( GPMF_OK == GPMF_FindNext ( & any_stream , GPMF_KEY_TIME_STAMP , GPMF_RECURSE_LEVELS ) ) { uint64_t timestamp = BYTESWAP64 ( * ( uint64_t * ) GPMF_RawData ( & any_stream ) ) ; if ( timestamp < minimumtimestamp ) minimumtimestamp = timestamp ; } } testend = mp4 -> indexcount ; do { <S2SV_ModStart> testend -- ; <S2SV_ModEnd> payload = GetPayload <S2SV_ModStart> ( handle , payload , testend ) ; <S2SV_ModEnd> payloadsize = GetPayloadSize <S2SV_ModStart> ( handle , testend ) ; <S2SV_ModEnd> ret = GPMF_Init <S2SV_ModStart> payloadsize ) ; } while ( testend > 0 <S2SV_ModEnd> && GPMF_OK != <S2SV_ModStart> GPMF_RECURSE_LEVELS ) ) ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TOTAL_SAMPLES , GPMF_CURRENT_LEVEL ) ) endsamples = BYTESWAP32 ( * ( uint32_t * ) GPMF_RawData ( & find_stream ) ) ; else { uint32_t i ; for ( i = teststart ; i <= testend ; i ++ ) { <S2SV_ModEnd> payload = GetPayload <S2SV_ModStart> , payload , i <S2SV_ModEnd> ) ; payloadsize <S2SV_ModStart> ( handle , i ) ; if ( GPMF_OK == <S2SV_ModEnd> GPMF_Init ( ms <S2SV_ModStart> , payloadsize ) ) if ( GPMF_OK == GPMF_FindNext ( ms , fourcc , GPMF_RECURSE_LEVELS ) ) endsamples += GPMF_PayloadSampleCount ( ms ) ; } } if ( starttimestamp != 0 <S2SV_ModEnd> ) { uint32_t <S2SV_ModStart> ) { uint32_t last_samples = GPMF_PayloadSampleCount ( ms ) ; uint32_t totaltimestamped_samples = endsamples - last_samples - startsamples ; double time_stamp_scale = 1000000000.0 ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TIME_STAMP , GPMF_CURRENT_LEVEL ) ) endtimestamp = BYTESWAP64 ( * ( uint64_t * ) GPMF_RawData <S2SV_ModEnd> ( & find_stream <S2SV_ModStart> ( & find_stream ) ) ; if ( endtimestamp ) { double approxrate = 0.0 ; if ( endsamples > startsamples ) approxrate <S2SV_ModEnd> = ( double <S2SV_ModStart> indexcount ) ; if ( approxrate == 0.0 ) approxrate <S2SV_ModEnd> = ( double <S2SV_ModStart> indexcount ) ; while ( time_stamp_scale >= 1 ) { rate = ( double ) ( totaltimestamped_samples ) / ( ( double ) ( endtimestamp - starttimestamp ) / time_stamp_scale ) ; if ( rate * 0.9 < approxrate && approxrate < rate * 1.1 ) break ; time_stamp_scale *= 0.1 ; } if ( time_stamp_scale < 1.0 ) rate = 0.0 ; intercept = ( ( ( double ) minimumtimestamp - ( double ) starttimestamp ) / time_stamp_scale ) * rate ; } } if ( rate == 0.0 ) { if ( ! ( flags & GPMF_SAMPLE_RATE_PRECISE ) ) { if ( endsamples > startsamples ) rate = ( double ) ( endsamples - startsamples ) / ( mp4 -> metadatalength * ( ( double ) ( testend - teststart + 1 ) ) / ( double ) <S2SV_ModEnd> mp4 -> indexcount <S2SV_ModStart> mp4 -> indexcount ) ; if ( rate == 0.0 ) rate = ( double ) ( samples ) / ( mp4 -> metadatalength * ( ( double ) ( testend - teststart + 1 ) ) / ( double ) mp4 -> indexcount ) ; double in , out ; if ( GPMF_OK == GetPayloadTime ( handle , teststart , & in , & out ) ) intercept = ( double ) - in * rate ; } else { uint32_t payloadpos = 0 , payloadcount = 0 ; double slope , top = 0.0 , bot = 0.0 , meanX = 0 , meanY = 0 ; uint32_t * repeatarray = malloc ( mp4 -> indexcount <S2SV_ModStart> teststart ; payloadpos <= testend ; payloadpos ++ ) { payload = GetPayload ( handle , payload , payloadpos ) ; payloadsize = GetPayloadSize ( handle , payloadpos ) ; ret = GPMF_Init ( ms , payload , payloadsize ) ; if ( ret != GPMF_OK ) goto cleanup ; if ( GPMF_OK == GPMF_FindNext ( ms , fourcc , GPMF_RECURSE_LEVELS ) ) { GPMF_stream find_stream2 ; GPMF_CopyState ( ms , & find_stream2 ) ; payloadcount ++ <S2SV_ModEnd> ; if ( <S2SV_ModStart> == GPMF_FindNext ( & find_stream2 <S2SV_ModEnd> , fourcc , <S2SV_ModStart> , fourcc , <S2SV_ModEnd> GPMF_CURRENT_LEVEL ) ) <S2SV_ModStart> repeatarray ) { double <S2SV_ModEnd> in , out <S2SV_ModStart> ) samples ; if ( GPMF_OK == <S2SV_ModStart> & out ) ) <S2SV_ModEnd> meanX += out <S2SV_ModStart> uint32_t repeat = GPMF_PayloadSampleCount <S2SV_ModEnd> ( ms ) <S2SV_ModStart> repeatarray ) { double <S2SV_ModEnd> in , out <S2SV_ModStart> ) samples ; if ( GPMF_OK == <S2SV_ModStart> & out ) ) <S2SV_ModEnd> meanX += out <S2SV_ModStart> } } } else { <S2SV_ModEnd> repeatarray [ payloadpos <S2SV_ModStart> [ payloadpos ] = 0 ; } } if ( repeatarray ) { meanY /= ( double ) payloadcount ; meanX /= ( double ) payloadcount ; for ( payloadpos = teststart ; payloadpos <= testend ; payloadpos ++ ) { double in , out ; if ( repeatarray [ payloadpos ] && GPMF_OK == GetPayloadTime ( handle , payloadpos , & in , & out ) ) { top += ( ( double ) out - meanX ) * ( ( double ) repeatarray [ payloadpos ] <S2SV_ModStart> meanX ) ; } <S2SV_ModStart> / bot ; rate = slope ; intercept = meanY - slope * meanX ; <S2SV_ModStart> # if 0 printf ( \"%c%c%c%c<S2SV_blank>start<S2SV_blank>offset<S2SV_blank>=<S2SV_blank>%f<S2SV_blank>(%.3fms)<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%f\\\\n\" <S2SV_ModEnd> , PRINTF_4CC ( <S2SV_ModStart> intercept / slope , rate ) ; printf ( \"%c%c%c%c<S2SV_blank>first<S2SV_blank>sample<S2SV_blank>at<S2SV_blank>time<S2SV_blank>%.3fms\\\\n\" , PRINTF_4CC ( fourcc ) , - 1000.0 * intercept / slope ) ; # endif <S2SV_ModEnd> } else { <S2SV_ModStart> repeatarray ) ; } } if ( firstsampletime && lastsampletime ) { uint32_t endpayload = mp4 -> indexcount ; do { endpayload -- ; payload = GetPayload ( handle , payload , endpayload ) ; payloadsize = GetPayloadSize ( handle , endpayload ) ; ret = GPMF_Init ( ms , payload , payloadsize ) ; } while ( endpayload > 0 && GPMF_OK != GPMF_FindNext ( ms , fourcc , GPMF_RECURSE_LEVELS ) ) ; if ( endpayload > 0 && ret == GPMF_OK ) { uint32_t totalsamples = endsamples - startsamples ; float timo = 0.0 ; GPMF_CopyState ( ms , & find_stream ) ; if ( GPMF_OK == GPMF_FindPrev ( & find_stream , GPMF_KEY_TIME_OFFSET , GPMF_CURRENT_LEVEL ) ) GPMF_FormattedData ( & find_stream , & timo , 4 , 0 , 1 ) ; double first , last ; first = - intercept / rate - timo ; last = first + ( double ) totalsamples / rate ; if ( firstsampletime ) * firstsampletime = first ; if ( lastsampletime ) * lastsampletime = last ; } <S2SV_ModEnd> } } } <S2SV_ModStart> ( payload ) <S2SV_ModEnd> FreePayload ( payload <S2SV_ModStart> = NULL ; <S2SV_ModEnd> return rate ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4578\n\n```\nCWE-200 static void snd_timer_user_ccallback ( struct snd_timer_instance * timeri , int event , struct timespec * tstamp , unsigned long resolution ) { struct snd_timer_user * tu = timeri -> callback_data ; struct snd_timer_tread r1 ; unsigned long flags ; if ( event >= SNDRV_TIMER_EVENT_START && event <= SNDRV_TIMER_EVENT_PAUSE ) tu -> tstamp = * tstamp ; if ( ( tu -> filter & ( 1 << event ) ) == 0 || ! tu -> tread ) return ; <S2SV_StartBug> r1 . event = event ; <S2SV_EndBug> r1 . tstamp = * tstamp ; r1 . val = resolution ; spin_lock_irqsave ( & tu -> qlock , flags ) ; snd_timer_user_append_to_tqueue ( tu , & r1 ) ; spin_unlock_irqrestore ( & tu -> qlock , flags ) ; kill_fasync ( & tu -> fasync , SIGIO , POLL_IN ) ; wake_up ( & tu -> qchange_sleep ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; memset ( & r1 , 0 , sizeof ( r1 ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4998\n\n```\nCWE-119 static int check_entry_size_and_hooks ( struct ip6t_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ip6t_entry ) != 0 || <S2SV_StartBug> ( unsigned char * ) e + sizeof ( struct ip6t_entry ) >= limit ) { <S2SV_EndBug> duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ip6t_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ip6t_entry ) >= limit || ( unsigned char * ) e + e -> next_offset >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7133\n\n```\nCWE-190 static void * zend_mm_realloc_heap ( zend_mm_heap * heap , void * ptr , size_t size , size_t copy_size ZEND_FILE_LINE_DC ZEND_FILE_LINE_ORIG_DC ) { size_t page_offset ; size_t old_size ; size_t new_size ; void * ret ; # if ZEND_DEBUG size_t real_size ; zend_mm_debug_info * dbg ; # endif page_offset = ZEND_MM_ALIGNED_OFFSET ( ptr , ZEND_MM_CHUNK_SIZE ) ; if ( UNEXPECTED ( page_offset == 0 ) ) { if ( UNEXPECTED ( ptr == NULL ) ) { return zend_mm_alloc_heap ( heap , size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; } old_size = zend_mm_get_huge_block_size ( heap , ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # if ZEND_DEBUG real_size = size ; size = ZEND_MM_ALIGNED_SIZE ( size ) + ZEND_MM_ALIGNED_SIZE ( sizeof ( zend_mm_debug_info ) ) ; # endif if ( size > ZEND_MM_MAX_LARGE_SIZE ) { # if ZEND_DEBUG size = real_size ; # endif # ifdef ZEND_WIN32 new_size = ZEND_MM_ALIGNED_SIZE_EX ( size , MAX ( REAL_PAGE_SIZE , ZEND_MM_CHUNK_SIZE ) ) ; # else new_size = ZEND_MM_ALIGNED_SIZE_EX ( size , REAL_PAGE_SIZE ) ; # endif if ( new_size == old_size ) { # if ZEND_DEBUG zend_mm_change_huge_block_size ( heap , ptr , new_size , real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # else zend_mm_change_huge_block_size ( heap , ptr , new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # endif return ptr ; } else if ( new_size < old_size ) { if ( zend_mm_chunk_truncate ( heap , ptr , old_size , new_size ) ) { # if ZEND_MM_STAT || ZEND_MM_LIMIT heap -> real_size -= old_size - new_size ; # endif # if ZEND_MM_STAT heap -> size -= old_size - new_size ; # endif # if ZEND_DEBUG zend_mm_change_huge_block_size ( heap , ptr , new_size , real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # else zend_mm_change_huge_block_size ( heap , ptr , new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # endif return ptr ; } } else { # if ZEND_MM_LIMIT if ( UNEXPECTED ( heap -> real_size + ( new_size - old_size ) > heap -> limit ) ) { if ( zend_mm_gc ( heap ) && heap -> real_size + ( new_size - old_size ) <= heap -> limit ) { } else if ( heap -> overflow == 0 ) { # if ZEND_DEBUG zend_mm_safe_error ( heap , \"Allowed<S2SV_blank>memory<S2SV_blank>size<S2SV_blank>of<S2SV_blank>%zu<S2SV_blank>bytes<S2SV_blank>exhausted<S2SV_blank>at<S2SV_blank>%s:%d<S2SV_blank>(tried<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>%zu<S2SV_blank>bytes)\" , heap -> limit , __zend_filename , __zend_lineno , size ) ; # else zend_mm_safe_error ( heap , \"Allowed<S2SV_blank>memory<S2SV_blank>size<S2SV_blank>of<S2SV_blank>%zu<S2SV_blank>bytes<S2SV_blank>exhausted<S2SV_blank>(tried<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>%zu<S2SV_blank>bytes)\" , heap -> limit , size ) ; # endif return NULL ; } } # endif if ( zend_mm_chunk_extend ( heap , ptr , old_size , new_size ) ) { # if ZEND_MM_STAT || ZEND_MM_LIMIT heap -> real_size += new_size - old_size ; # endif # if ZEND_MM_STAT heap -> real_peak = MAX ( heap -> real_peak , heap -> real_size ) ; heap -> size += new_size - old_size ; heap -> peak = MAX ( heap -> peak , heap -> size ) ; # endif # if ZEND_DEBUG zend_mm_change_huge_block_size ( heap , ptr , new_size , real_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # else zend_mm_change_huge_block_size ( heap , ptr , new_size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # endif return ptr ; } } } } else { zend_mm_chunk * chunk = ( zend_mm_chunk * ) ZEND_MM_ALIGNED_BASE ( ptr , ZEND_MM_CHUNK_SIZE ) ; int page_num = ( int ) ( page_offset / ZEND_MM_PAGE_SIZE ) ; zend_mm_page_info info = chunk -> map [ page_num ] ; # if ZEND_DEBUG size_t real_size = size ; size = ZEND_MM_ALIGNED_SIZE ( size ) + ZEND_MM_ALIGNED_SIZE ( sizeof ( zend_mm_debug_info ) ) ; # endif ZEND_MM_CHECK ( chunk -> heap == heap , \"zend_mm_heap<S2SV_blank>corrupted\" ) ; if ( info & ZEND_MM_IS_SRUN ) { <S2SV_StartBug> int old_bin_num , bin_num ; <S2SV_EndBug> old_bin_num = ZEND_MM_SRUN_BIN_NUM ( info ) ; old_size = bin_data_size [ old_bin_num ] ; <S2SV_StartBug> bin_num = ZEND_MM_SMALL_SIZE_TO_BIN ( size ) ; <S2SV_EndBug> if ( old_bin_num == bin_num ) { # if ZEND_DEBUG dbg = zend_mm_get_debug_info ( heap , ptr ) ; dbg -> size = real_size ; dbg -> filename = __zend_filename ; dbg -> orig_filename = __zend_orig_filename ; dbg -> lineno = __zend_lineno ; dbg -> orig_lineno = __zend_orig_lineno ; # endif <S2SV_StartBug> return ptr ; <S2SV_EndBug> } } else { ZEND_MM_CHECK ( ZEND_MM_ALIGNED_OFFSET ( page_offset , ZEND_MM_PAGE_SIZE ) == 0 , \"zend_mm_heap<S2SV_blank>corrupted\" ) ; old_size = ZEND_MM_LRUN_PAGES ( info ) * ZEND_MM_PAGE_SIZE ; if ( size > ZEND_MM_MAX_SMALL_SIZE && size <= ZEND_MM_MAX_LARGE_SIZE ) { new_size = ZEND_MM_ALIGNED_SIZE_EX ( size , ZEND_MM_PAGE_SIZE ) ; if ( new_size == old_size ) { # if ZEND_DEBUG dbg = zend_mm_get_debug_info ( heap , ptr ) ; dbg -> size = real_size ; dbg -> filename = __zend_filename ; dbg -> orig_filename = __zend_orig_filename ; dbg -> lineno = __zend_lineno ; dbg -> orig_lineno = __zend_orig_lineno ; # endif return ptr ; } else if ( new_size < old_size ) { int new_pages_count = ( int ) ( new_size / ZEND_MM_PAGE_SIZE ) ; int rest_pages_count = ( int ) ( ( old_size - new_size ) / ZEND_MM_PAGE_SIZE ) ; # if ZEND_MM_STAT heap -> size -= rest_pages_count * ZEND_MM_PAGE_SIZE ; # endif chunk -> map [ page_num ] = ZEND_MM_LRUN ( new_pages_count ) ; chunk -> free_pages += rest_pages_count ; zend_mm_bitset_reset_range ( chunk -> free_map , page_num + new_pages_count , rest_pages_count ) ; # if ZEND_DEBUG dbg = zend_mm_get_debug_info ( heap , ptr ) ; dbg -> size = real_size ; dbg -> filename = __zend_filename ; dbg -> orig_filename = __zend_orig_filename ; dbg -> lineno = __zend_lineno ; dbg -> orig_lineno = __zend_orig_lineno ; # endif return ptr ; } else { int new_pages_count = ( int ) ( new_size / ZEND_MM_PAGE_SIZE ) ; int old_pages_count = ( int ) ( old_size / ZEND_MM_PAGE_SIZE ) ; if ( page_num + new_pages_count <= ZEND_MM_PAGES && zend_mm_bitset_is_free_range ( chunk -> free_map , page_num + old_pages_count , new_pages_count - old_pages_count ) ) { # if ZEND_MM_STAT do { size_t size = heap -> size + ( new_size - old_size ) ; size_t peak = MAX ( heap -> peak , size ) ; heap -> size = size ; heap -> peak = peak ; } while ( 0 ) ; # endif chunk -> free_pages -= new_pages_count - old_pages_count ; zend_mm_bitset_set_range ( chunk -> free_map , page_num + old_pages_count , new_pages_count - old_pages_count ) ; chunk -> map [ page_num ] = ZEND_MM_LRUN ( new_pages_count ) ; # if ZEND_DEBUG dbg = zend_mm_get_debug_info ( heap , ptr ) ; dbg -> size = real_size ; dbg -> filename = __zend_filename ; dbg -> orig_filename = __zend_orig_filename ; dbg -> lineno = __zend_lineno ; dbg -> orig_lineno = __zend_orig_lineno ; # endif return ptr ; } } } } # if ZEND_DEBUG size = real_size ; # endif } # if ZEND_MM_STAT do { size_t orig_peak = heap -> peak ; size_t orig_real_peak = heap -> real_peak ; # endif ret = zend_mm_alloc_heap ( heap , size ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; memcpy ( ret , ptr , MIN ( old_size , copy_size ) ) ; zend_mm_free_heap ( heap , ptr ZEND_FILE_LINE_RELAY_CC ZEND_FILE_LINE_ORIG_RELAY_CC ) ; # if ZEND_MM_STAT heap -> peak = MAX ( orig_peak , heap -> size ) ; heap -> real_peak = MAX ( orig_real_peak , heap -> real_size ) ; } while ( 0 ) ; # endif return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { int old_bin_num <S2SV_ModEnd> = ZEND_MM_SRUN_BIN_NUM ( <S2SV_ModStart> old_bin_num ] ; if ( size <= ZEND_MM_MAX_SMALL_SIZE ) { int <S2SV_ModStart> return ptr ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8654\n\n```\nCWE-119 void jpc_qmfb_split_col ( jpc_fix_t * a , int numrows , int stride , int parity ) { int bufsize = JPC_CEILDIVPOW2 ( numrows , 1 ) ; jpc_fix_t splitbuf [ QMFB_SPLITBUFSIZE ] ; jpc_fix_t * buf = splitbuf ; register jpc_fix_t * srcptr ; register jpc_fix_t * dstptr ; register int n ; register int m ; <S2SV_StartBug> int hstartcol ; <S2SV_EndBug> if ( bufsize > QMFB_SPLITBUFSIZE ) { if ( ! ( buf = jas_alloc2 ( bufsize , sizeof ( jpc_fix_t ) ) ) ) { abort ( ) ; } } if ( numrows >= 2 ) { <S2SV_StartBug> hstartcol = ( numrows + 1 - parity ) >> 1 ; <S2SV_EndBug> <S2SV_StartBug> m = numrows - hstartcol ; <S2SV_EndBug> n = m ; dstptr = buf ; srcptr = & a [ ( 1 - parity ) * stride ] ; while ( n -- > 0 ) { * dstptr = * srcptr ; ++ dstptr ; srcptr += stride << 1 ; } dstptr = & a [ ( 1 - parity ) * stride ] ; srcptr = & a [ ( 2 - parity ) * stride ] ; n = numrows - m - ( ! parity ) ; while ( n -- > 0 ) { * dstptr = * srcptr ; dstptr += stride ; srcptr += stride << 1 ; } <S2SV_StartBug> dstptr = & a [ hstartcol * stride ] ; <S2SV_EndBug> srcptr = buf ; n = m ; while ( n -- > 0 ) { * dstptr = * srcptr ; dstptr += stride ; ++ srcptr ; } } if ( buf != splitbuf ) { jas_free ( buf ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> m ; int hstartrow <S2SV_ModEnd> ; if ( <S2SV_ModStart> 2 ) { hstartrow <S2SV_ModEnd> = ( numrows <S2SV_ModStart> = numrows - hstartrow <S2SV_ModEnd> ; n = <S2SV_ModStart> & a [ hstartrow <S2SV_ModEnd> * stride ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int em_ret_far ( struct x86_emulate_ctxt * ctxt ) { int rc ; <S2SV_StartBug> unsigned long cs ; <S2SV_EndBug> int cpl = ctxt -> ops -> cpl ( ctxt ) ; <S2SV_StartBug> rc = emulate_pop ( ctxt , & ctxt -> _eip , ctxt -> op_bytes ) ; <S2SV_EndBug> if ( rc != X86EMUL_CONTINUE ) <S2SV_StartBug> return rc ; <S2SV_EndBug> if ( ctxt -> op_bytes == 4 ) ctxt -> _eip = ( u32 ) ctxt -> _eip ; rc = emulate_pop ( ctxt , & cs , ctxt -> op_bytes ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; if ( ctxt -> mode >= X86EMUL_MODE_PROT16 && ( cs & 3 ) > cpl ) return X86EMUL_UNHANDLEABLE ; <S2SV_StartBug> rc = load_segment_descriptor ( ctxt , ( u16 ) cs , VCPU_SREG_CS ) ; <S2SV_EndBug> return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned long eip , cs ; u16 old_cs <S2SV_ModEnd> ; int cpl <S2SV_ModStart> ctxt ) ; struct desc_struct old_desc , new_desc ; const struct x86_emulate_ops * ops = ctxt -> ops ; if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) ops -> get_segment ( ctxt , & old_cs , & old_desc , NULL , VCPU_SREG_CS ) ; <S2SV_ModStart> ctxt , & eip <S2SV_ModEnd> , ctxt -> <S2SV_ModStart> ) return rc <S2SV_ModEnd> ; rc = <S2SV_ModStart> ; rc = __load_segment_descriptor <S2SV_ModEnd> ( ctxt , <S2SV_ModStart> cs , VCPU_SREG_CS , 0 , false , & new_desc ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; rc = assign_eip_far ( ctxt , eip , new_desc . l ) ; if ( rc != X86EMUL_CONTINUE ) { WARN_ON ( ! ctxt -> mode != X86EMUL_MODE_PROT64 ) ; ops -> set_segment ( ctxt , old_cs , & old_desc , 0 , VCPU_SREG_CS ) ; } <S2SV_ModEnd> return rc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8569\n\n```\nCWE-200 static int pptp_bind ( struct socket * sock , struct sockaddr * uservaddr , int sockaddr_len ) { struct sock * sk = sock -> sk ; struct sockaddr_pppox * sp = ( struct sockaddr_pppox * ) uservaddr ; struct pppox_sock * po = pppox_sk ( sk ) ; struct pptp_opt * opt = & po -> proto . pptp ; int error = 0 ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> opt -> src_addr = sp -> sa_addr . pptp ; if ( add_chan ( po ) ) error = - EBUSY ; release_sock ( sk ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; if ( sockaddr_len < sizeof ( struct sockaddr_pppox ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * setv4key_principal_2_svc ( setv4key_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( ! ( CHANGEPW_SERVICE ( rqstp ) ) && kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_SETKEY , arg -> princ , NULL ) ) { ret . code = kadm5_setv4key_principal ( ( void * ) handle , arg -> princ , arg -> keyblock ) ; } else { log_unauth ( \"kadm5_setv4key_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_SETKEY ; } if ( ret . code != KADM5_AUTH_SETKEY ) { if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_setv4key_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_StartBug> exit_func : <S2SV_EndBug> free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : <S2SV_ModStart> service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 static int psf_close ( SF_PRIVATE * psf ) { uint32_t k ; int error = 0 ; if ( psf -> codec_close ) { error = psf -> codec_close ( psf ) ; psf -> codec_close = NULL ; } ; if ( psf -> container_close ) error = psf -> container_close ( psf ) ; error = psf_fclose ( psf ) ; <S2SV_StartBug> psf_close_rsrc ( psf ) ; <S2SV_EndBug> free ( psf -> container_data ) ; free ( psf -> codec_data ) ; free ( psf -> interleave ) ; free ( psf -> dither ) ; free ( psf -> peak_info ) ; free ( psf -> broadcast_16k ) ; free ( psf -> loop_info ) ; free ( psf -> instrument ) ; free ( psf -> cues ) ; free ( psf -> channel_map ) ; free ( psf -> format_desc ) ; free ( psf -> strings . storage ) ; if ( psf -> wchunks . chunks ) for ( k = 0 ; k < psf -> wchunks . used ; k ++ ) free ( psf -> wchunks . chunks [ k ] . data ) ; free ( psf -> rchunks . chunks ) ; free ( psf -> wchunks . chunks ) ; free ( psf -> iterator ) ; free ( psf -> cart_16k ) ; memset ( psf , 0 , sizeof ( SF_PRIVATE ) ) ; free ( psf ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> psf_close_rsrc ( psf ) ; free ( psf -> header . ptr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10130\n\n```\nCWE-284 static int http_connect ( http_subtransport * t ) { int error ; char * proxy_url ; if ( t -> connected && http_should_keep_alive ( & t -> parser ) && t -> parse_finished ) return 0 ; if ( t -> io ) { git_stream_close ( t -> io ) ; git_stream_free ( t -> io ) ; t -> io = NULL ; t -> connected = 0 ; } if ( t -> connection_data . use_ssl ) { error = git_tls_stream_new ( & t -> io , t -> connection_data . host , t -> connection_data . port ) ; } else { # ifdef GIT_CURL error = git_curl_stream_new ( & t -> io , t -> connection_data . host , t -> connection_data . port ) ; # else error = git_socket_stream_new ( & t -> io , t -> connection_data . host , t -> connection_data . port ) ; # endif } if ( error < 0 ) return error ; GITERR_CHECK_VERSION ( t -> io , GIT_STREAM_VERSION , \"git_stream\" ) ; if ( git_stream_supports_proxy ( t -> io ) && ! git_remote__get_http_proxy ( t -> owner -> owner , ! ! t -> connection_data . use_ssl , & proxy_url ) ) { error = git_stream_set_proxy ( t -> io , proxy_url ) ; git__free ( proxy_url ) ; if ( error < 0 ) return error ; } error = git_stream_connect ( t -> io ) ; # if defined ( GIT_OPENSSL ) || defined ( GIT_SECURE_TRANSPORT ) || defined ( GIT_CURL ) if ( ( ! error || error == GIT_ECERTIFICATE ) && t -> owner -> certificate_check_cb != NULL && git_stream_is_encrypted ( t -> io ) ) { git_cert * cert ; <S2SV_StartBug> int is_valid ; <S2SV_EndBug> if ( ( error = git_stream_certificate ( & cert , t -> io ) ) < 0 ) return error ; <S2SV_StartBug> giterr_clear ( ) ; <S2SV_EndBug> is_valid = error != GIT_ECERTIFICATE ; error = t -> owner -> certificate_check_cb ( cert , is_valid , t -> connection_data . host , t -> owner -> message_cb_payload ) ; if ( error < 0 ) { if ( ! giterr_last ( ) ) giterr_set ( GITERR_NET , \"user<S2SV_blank>cancelled<S2SV_blank>certificate<S2SV_blank>check\" ) ; return error ; } } # endif if ( error < 0 ) return error ; t -> connected = 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int is_valid = ( error == GIT_OK ) <S2SV_ModStart> giterr_clear ( ) <S2SV_ModEnd> ; error =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11664\n\n```\nCWE-125 struct _mdi * _WM_ParseNewHmp ( uint8_t * hmp_data , uint32_t hmp_size ) { uint8_t is_hmp2 = 0 ; uint32_t zero_cnt = 0 ; uint32_t i = 0 ; uint32_t hmp_file_length = 0 ; uint32_t hmp_chunks = 0 ; uint32_t hmp_divisions = 0 ; uint32_t hmp_unknown = 0 ; uint32_t hmp_bpm = 0 ; uint32_t hmp_song_time = 0 ; struct _mdi * hmp_mdi ; uint8_t * * hmp_chunk ; uint32_t * chunk_length ; uint32_t * chunk_ofs ; uint32_t * chunk_delta ; uint8_t * chunk_end ; uint32_t chunk_num = 0 ; uint32_t hmp_track = 0 ; uint32_t smallest_delta = 0 ; uint32_t subtract_delta = 0 ; uint32_t end_of_chunks = 0 ; uint32_t var_len_shift = 0 ; float tempo_f = 500000.0 ; float samples_per_delta_f = 0.0 ; uint32_t sample_count = 0 ; float sample_count_f = 0 ; float sample_remainder = 0 ; if ( memcmp ( hmp_data , \"HMIMIDIP\" , 8 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMP , NULL , 0 ) ; return NULL ; } hmp_data += 8 ; hmp_size -= 8 ; if ( ! memcmp ( hmp_data , \"013195\" , 6 ) ) { hmp_data += 6 ; hmp_size -= 6 ; is_hmp2 = 1 ; } if ( is_hmp2 ) { zero_cnt = 18 ; } else { zero_cnt = 24 ; } for ( i = 0 ; i < zero_cnt ; i ++ ) { if ( hmp_data [ i ] != 0 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMP , NULL , 0 ) ; return NULL ; } } hmp_data += zero_cnt ; hmp_size -= zero_cnt ; hmp_file_length = * hmp_data ++ ; hmp_file_length += ( * hmp_data ++ << 8 ) ; hmp_file_length += ( * hmp_data ++ << 16 ) ; hmp_file_length += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; UNUSED ( hmp_file_length ) ; hmp_data += 12 ; hmp_size -= 12 ; hmp_chunks = * hmp_data ++ ; hmp_chunks += ( * hmp_data ++ << 8 ) ; hmp_chunks += ( * hmp_data ++ << 16 ) ; hmp_chunks += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; hmp_unknown = * hmp_data ++ ; hmp_unknown += ( * hmp_data ++ << 8 ) ; hmp_unknown += ( * hmp_data ++ << 16 ) ; hmp_unknown += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; UNUSED ( hmp_unknown ) ; hmp_divisions = 60 ; hmp_bpm = * hmp_data ++ ; hmp_bpm += ( * hmp_data ++ << 8 ) ; hmp_bpm += ( * hmp_data ++ << 16 ) ; hmp_bpm += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; if ( ( _WM_MixerOptions & WM_MO_ROUNDTEMPO ) ) { tempo_f = ( float ) ( 60000000 / hmp_bpm ) + 0.5f ; } else { tempo_f = ( float ) ( 60000000 / hmp_bpm ) ; } samples_per_delta_f = _WM_GetSamplesPerTick ( hmp_divisions , tempo_f ) ; hmp_song_time = * hmp_data ++ ; hmp_song_time += ( * hmp_data ++ << 8 ) ; hmp_song_time += ( * hmp_data ++ << 16 ) ; hmp_song_time += ( * hmp_data ++ << 24 ) ; hmp_size -= 4 ; UNUSED ( hmp_song_time ) ; if ( is_hmp2 ) { hmp_data += 840 ; hmp_size -= 840 ; } else { hmp_data += 712 ; hmp_size -= 712 ; } hmp_mdi = _WM_initMDI ( ) ; _WM_midi_setup_divisions ( hmp_mdi , hmp_divisions ) ; _WM_midi_setup_tempo ( hmp_mdi , ( uint32_t ) tempo_f ) ; hmp_chunk = malloc ( sizeof ( uint8_t * ) * hmp_chunks ) ; chunk_length = malloc ( sizeof ( uint32_t ) * hmp_chunks ) ; chunk_delta = malloc ( sizeof ( uint32_t ) * hmp_chunks ) ; chunk_ofs = malloc ( sizeof ( uint32_t ) * hmp_chunks ) ; chunk_end = malloc ( sizeof ( uint8_t ) * hmp_chunks ) ; smallest_delta = 0xffffffff ; for ( i = 0 ; i < hmp_chunks ; i ++ ) { hmp_chunk [ i ] = hmp_data ; chunk_ofs [ i ] = 0 ; chunk_num = * hmp_data ++ ; chunk_num += ( * hmp_data ++ << 8 ) ; chunk_num += ( * hmp_data ++ << 16 ) ; chunk_num += ( * hmp_data ++ << 24 ) ; chunk_ofs [ i ] += 4 ; UNUSED ( chunk_num ) ; chunk_length [ i ] = * hmp_data ++ ; chunk_length [ i ] += ( * hmp_data ++ << 8 ) ; chunk_length [ i ] += ( * hmp_data ++ << 16 ) ; chunk_length [ i ] += ( * hmp_data ++ << 24 ) ; chunk_ofs [ i ] += 4 ; if ( chunk_length [ i ] > hmp_size ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMP , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmp_end ; } hmp_size -= chunk_length [ i ] ; hmp_track = * hmp_data ++ ; hmp_track += ( * hmp_data ++ << 8 ) ; hmp_track += ( * hmp_data ++ << 16 ) ; hmp_track += ( * hmp_data ++ << 24 ) ; chunk_ofs [ i ] += 4 ; UNUSED ( hmp_track ) ; chunk_delta [ i ] = 0 ; var_len_shift = 0 ; if ( * hmp_data < 0x80 ) { do { chunk_delta [ i ] = chunk_delta [ i ] | ( ( * hmp_data ++ & 0x7F ) << var_len_shift ) ; var_len_shift += 7 ; chunk_ofs [ i ] ++ ; } while ( * hmp_data < 0x80 ) ; } chunk_delta [ i ] = chunk_delta [ i ] | ( ( * hmp_data ++ & 0x7F ) << var_len_shift ) ; chunk_ofs [ i ] ++ ; if ( chunk_delta [ i ] < smallest_delta ) { smallest_delta = chunk_delta [ i ] ; } <S2SV_StartBug> hmp_data = hmp_chunk [ i ] + chunk_length [ i ] ; <S2SV_EndBug> hmp_chunk [ i ] += chunk_ofs [ i ] ++ ; chunk_end [ i ] = 0 ; } subtract_delta = smallest_delta ; sample_count_f = ( ( ( float ) smallest_delta * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; hmp_mdi -> events [ hmp_mdi -> event_count - 1 ] . samples_to_next += sample_count ; hmp_mdi -> extra_info . approx_total_samples += sample_count ; while ( end_of_chunks < hmp_chunks ) { smallest_delta = 0 ; for ( i = 0 ; i < hmp_chunks ; i ++ ) { if ( chunk_end [ i ] ) continue ; if ( chunk_delta [ i ] ) { chunk_delta [ i ] -= subtract_delta ; if ( chunk_delta [ i ] ) { if ( ( ! smallest_delta ) || ( smallest_delta > chunk_delta [ i ] ) ) { smallest_delta = chunk_delta [ i ] ; } continue ; } } do { if ( ( ( hmp_chunk [ i ] [ 0 ] & 0xf0 ) == 0xb0 ) && ( ( hmp_chunk [ i ] [ 1 ] == 110 ) || ( hmp_chunk [ i ] [ 1 ] == 111 ) ) && ( hmp_chunk [ i ] [ 2 ] > 0x7f ) ) { hmp_chunk [ i ] += 3 ; <S2SV_StartBug> } else { <S2SV_EndBug> uint32_t setup_ret = 0 ; <S2SV_StartBug> if ( ( setup_ret = _WM_SetupMidiEvent ( hmp_mdi , hmp_chunk [ i ] , 0 ) ) == 0 ) { <S2SV_EndBug> goto _hmp_end ; } if ( ( hmp_chunk [ i ] [ 0 ] == 0xff ) && ( hmp_chunk [ i ] [ 1 ] == 0x2f ) && ( hmp_chunk [ i ] [ 2 ] == 0x00 ) ) { end_of_chunks ++ ; <S2SV_StartBug> chunk_end [ i ] = 1 ; <S2SV_EndBug> hmp_chunk [ i ] += 3 ; goto NEXT_CHUNK ; } else if ( ( hmp_chunk [ i ] [ 0 ] == 0xff ) && ( hmp_chunk [ i ] [ 1 ] == 0x51 ) && ( hmp_chunk [ i ] [ 2 ] == 0x03 ) ) { tempo_f = ( float ) ( ( hmp_chunk [ i ] [ 3 ] << 16 ) + ( hmp_chunk [ i ] [ 4 ] << 8 ) + hmp_chunk [ i ] [ 5 ] ) ; if ( tempo_f == 0.0 ) tempo_f = 500000.0 ; fprintf ( stderr , \"DEBUG:<S2SV_blank>Tempo<S2SV_blank>change<S2SV_blank>%f\\\\r\\\\n\" , tempo_f ) ; } hmp_chunk [ i ] += setup_ret ; <S2SV_StartBug> } <S2SV_EndBug> var_len_shift = 0 ; chunk_delta [ i ] = 0 ; <S2SV_StartBug> if ( * hmp_chunk [ i ] < 0x80 ) { <S2SV_EndBug> do { <S2SV_StartBug> chunk_delta [ i ] = chunk_delta [ i ] + ( ( * hmp_chunk [ i ] & 0x7F ) << var_len_shift ) ; <S2SV_EndBug> var_len_shift += 7 ; hmp_chunk [ i ] ++ ; <S2SV_StartBug> } while ( * hmp_chunk [ i ] < 0x80 ) ; <S2SV_EndBug> } <S2SV_StartBug> chunk_delta [ i ] = chunk_delta [ i ] + ( ( * hmp_chunk [ i ] & 0x7F ) << var_len_shift ) ; <S2SV_EndBug> <S2SV_StartBug> hmp_chunk [ i ] ++ ; <S2SV_EndBug> } while ( ! chunk_delta [ i ] ) ; if ( ( ! smallest_delta ) || ( smallest_delta > chunk_delta [ i ] ) ) { smallest_delta = chunk_delta [ i ] ; } NEXT_CHUNK : continue ; } subtract_delta = smallest_delta ; sample_count_f = ( ( ( float ) smallest_delta * samples_per_delta_f ) + sample_remainder ) ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; hmp_mdi -> events [ hmp_mdi -> event_count - 1 ] . samples_to_next += sample_count ; hmp_mdi -> extra_info . approx_total_samples += sample_count ; } if ( ( hmp_mdi -> reverb = _WM_init_reverb ( _WM_SampleRate , _WM_reverb_room_width , _WM_reverb_room_length , _WM_reverb_listen_posx , _WM_reverb_listen_posy ) ) == NULL ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_MEM , \"to<S2SV_blank>init<S2SV_blank>reverb\" , 0 ) ; goto _hmp_end ; } hmp_mdi -> extra_info . current_sample = 0 ; hmp_mdi -> current_event = & hmp_mdi -> events [ 0 ] ; hmp_mdi -> samples_to_mix = 0 ; hmp_mdi -> note = NULL ; _WM_ResetToStart ( hmp_mdi ) ; _hmp_end : free ( hmp_chunk ) ; free ( chunk_length ) ; free ( chunk_delta ) ; free ( chunk_ofs ) ; free ( chunk_end ) ; if ( hmp_mdi -> reverb ) return ( hmp_mdi ) ; _WM_freeMDI ( hmp_mdi ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] + chunk_length [ i ] ; chunk_length [ i ] -= chunk_ofs <S2SV_ModStart> += 3 ; chunk_length [ i ] -= 3 ; <S2SV_ModStart> hmp_mdi , hmp_chunk [ i ] , chunk_length <S2SV_ModStart> ] = 1 ; chunk_length [ i ] -= 3 <S2SV_ModStart> += setup_ret ; chunk_length [ i ] -= setup_ret ; <S2SV_ModStart> ; if ( chunk_length [ i ] && <S2SV_ModStart> { do { if ( ! chunk_length [ i ] ) break ; <S2SV_ModStart> ] ++ ; chunk_length [ i ] -- ; <S2SV_ModStart> ) ; } if ( ! chunk_length [ i ] ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_HMP , \"file<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; goto _hmp_end ; } <S2SV_ModStart> i ] ++ ; chunk_length [ i ] --\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5353\n\n```\nCWE-20 static fp_info * fp_set_per_packet_inf_from_conv ( umts_fp_conversation_info_t * p_conv_data , tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree _U_ ) { fp_info * fpi ; guint8 tfi , c_t ; int offset = 0 , i = 0 , j = 0 , num_tbs , chan , tb_size , tb_bit_off ; gboolean is_control_frame ; umts_mac_info * macinf ; rlc_info * rlcinf ; guint8 fake_lchid = 0 ; gint * cur_val = NULL ; fpi = wmem_new0 ( wmem_file_scope ( ) , fp_info ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_fp , 0 , fpi ) ; fpi -> iface_type = p_conv_data -> iface_type ; fpi -> division = p_conv_data -> division ; fpi -> release = 7 ; fpi -> release_year = 2006 ; fpi -> release_month = 12 ; fpi -> channel = p_conv_data -> channel ; fpi -> dch_crc_present = p_conv_data -> dch_crc_present ; fpi -> link_type = FP_Link_Ethernet ; # if 0 if ( ! pinfo -> fd -> flags . visited && p_conv_data -> reset_frag ) { fpi -> reset_frag = p_conv_data -> reset_frag ; p_conv_data -> reset_frag = FALSE ; } # endif fpi -> srcport = pinfo -> srcport ; fpi -> destport = pinfo -> destport ; fpi -> com_context_id = p_conv_data -> com_context_id ; if ( pinfo -> link_dir == P2P_DIR_UL ) { fpi -> is_uplink = TRUE ; } else { fpi -> is_uplink = FALSE ; } is_control_frame = tvb_get_guint8 ( tvb , offset ) & 0x01 ; switch ( fpi -> channel ) { case CHANNEL_HSDSCH : fpi -> hsdsch_entity = p_conv_data -> hsdsch_entity ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; fpi -> hsdsch_macflowd_id = p_conv_data -> hsdsch_macdflow_id ; macinf -> content [ 0 ] = hsdsch_macdflow_id_mac_content_map [ p_conv_data -> hsdsch_macdflow_id ] ; macinf -> lchid [ 0 ] = p_conv_data -> hsdsch_macdflow_id ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; rlcinf -> mode [ 0 ] = hsdsch_macdflow_id_rlc_map [ p_conv_data -> hsdsch_macdflow_id ] ; if ( fpi -> hsdsch_entity == hs ) { for ( i = 0 ; i < MAX_NUM_HSDHSCH_MACDFLOW ; i ++ ) { if ( ( cur_val = ( gint * ) g_tree_lookup ( hsdsch_muxed_flows , GINT_TO_POINTER ( ( gint ) p_conv_data -> hrnti ) ) ) != NULL ) { j = 1 << i ; fpi -> hsdhsch_macfdlow_is_mux [ i ] = j & * cur_val ; } else { fpi -> hsdhsch_macfdlow_is_mux [ i ] = FALSE ; } } } rlcinf -> urnti [ 0 ] = fpi -> com_context_id ; rlcinf -> li_size [ 0 ] = RLC_LI_7BITS ; rlcinf -> ciphered [ 0 ] = FALSE ; rlcinf -> deciphered [ 0 ] = FALSE ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; return fpi ; case CHANNEL_EDCH : macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; fpi -> no_ddi_entries = p_conv_data -> no_ddi_entries ; for ( i = 0 ; i < fpi -> no_ddi_entries ; i ++ ) { fpi -> edch_ddi [ i ] = p_conv_data -> edch_ddi [ i ] ; fpi -> edch_macd_pdu_size [ i ] = p_conv_data -> edch_macd_pdu_size [ i ] ; fpi -> edch_lchId [ i ] = p_conv_data -> edch_lchId [ i ] ; } fpi -> edch_type = p_conv_data -> edch_type ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; rlcinf -> urnti [ 0 ] = fpi -> com_context_id ; rlcinf -> li_size [ 0 ] = RLC_LI_7BITS ; rlcinf -> ciphered [ 0 ] = FALSE ; rlcinf -> deciphered [ 0 ] = FALSE ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; return fpi ; case CHANNEL_PCH : fpi -> paging_indications = p_conv_data -> paging_indications ; fpi -> num_chans = p_conv_data -> num_dch_in_flow ; if ( is_control_frame ) { return fpi ; } offset = 3 ; break ; case CHANNEL_DCH : fpi -> num_chans = p_conv_data -> num_dch_in_flow ; if ( is_control_frame ) { return fpi ; } rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; offset = 2 ; fakes = 5 ; for ( chan = 0 ; chan < fpi -> num_chans ; chan ++ ) { tfi = tvb_get_bits8 ( tvb , 3 + offset * 8 , 5 ) ; num_tbs = ( fpi -> is_uplink ) ? p_conv_data -> fp_dch_channel_info [ chan ] . ul_chan_num_tbs [ tfi ] : p_conv_data -> fp_dch_channel_info [ chan ] . dl_chan_num_tbs [ tfi ] ; tb_size = ( fpi -> is_uplink ) ? p_conv_data -> fp_dch_channel_info [ i ] . ul_chan_tf_size [ tfi ] : p_conv_data -> fp_dch_channel_info [ i ] . dl_chan_tf_size [ tfi ] ; if ( p_conv_data -> dchs_in_flow_list [ chan ] != 31 && ( p_conv_data -> dchs_in_flow_list [ chan ] == 24 && tb_size != 340 ) ) { fake_lchid = make_fake_lchid ( pinfo , p_conv_data -> dchs_in_flow_list [ chan ] ) ; } tb_bit_off = ( 2 + p_conv_data -> num_dch_in_flow ) * 8 ; for ( j = 0 ; j < num_tbs && j + chan < MAX_MAC_FRAMES ; j ++ ) { macinf -> trchid [ j + chan ] = p_conv_data -> dchs_in_flow_list [ chan ] ; if ( p_conv_data -> dchs_in_flow_list [ chan ] == 31 || p_conv_data -> dchs_in_flow_list [ chan ] == 24 ) { if ( 0 ) { macinf -> ctmux [ j + chan ] = FALSE ; macinf -> lchid [ j + chan ] = 1 ; macinf -> content [ j + chan ] = lchId_type_table [ 1 ] ; rlcinf -> mode [ j + chan ] = lchId_rlc_map [ 1 ] ; } else if ( p_conv_data -> dchs_in_flow_list [ chan ] == 24 && tb_size != 340 ) { macinf -> ctmux [ j + chan ] = FALSE ; macinf -> lchid [ j + chan ] = fake_lchid ; macinf -> fake_chid [ j + chan ] = TRUE ; macinf -> content [ j + chan ] = MAC_CONTENT_PS_DTCH ; rlcinf -> mode [ j + chan ] = RLC_AM ; } else { macinf -> ctmux [ j + chan ] = TRUE ; <S2SV_StartBug> c_t = tvb_get_bits8 ( tvb , tb_bit_off , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> macinf -> lchid [ j + chan ] = c_t + 1 ; <S2SV_EndBug> <S2SV_StartBug> macinf -> content [ j + chan ] = lchId_type_table [ c_t + 1 ] ; <S2SV_EndBug> <S2SV_StartBug> rlcinf -> mode [ j + chan ] = lchId_rlc_map [ c_t + 1 ] ; <S2SV_EndBug> } } else { fake_lchid = make_fake_lchid ( pinfo , p_conv_data -> dchs_in_flow_list [ chan ] ) ; macinf -> ctmux [ j + chan ] = FALSE ; macinf -> content [ j + chan ] = lchId_type_table [ fake_lchid ] ; rlcinf -> mode [ j + chan ] = lchId_rlc_map [ fake_lchid ] ; macinf -> fake_chid [ j + chan ] = TRUE ; macinf -> lchid [ j + chan ] = fake_lchid ; } rlcinf -> urnti [ j + chan ] = p_conv_data -> com_context_id ; rlcinf -> li_size [ j + chan ] = RLC_LI_7BITS ; # if 0 if ( rrc_ciph_inf && g_tree_lookup ( rrc_ciph_inf , GINT_TO_POINTER ( ( gint ) p_conv_data -> com_context_id ) ) != NULL ) { rlcinf -> ciphered [ j + chan ] = TRUE ; } else { rlcinf -> ciphered [ j + chan ] = FALSE ; } # endif rlcinf -> ciphered [ j + chan ] = FALSE ; rlcinf -> deciphered [ j + chan ] = FALSE ; rlcinf -> rbid [ j + chan ] = macinf -> lchid [ j + chan ] ; tb_bit_off += tb_size + 4 ; } offset ++ ; } p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; offset = 2 ; break ; case CHANNEL_FACH_FDD : fpi -> num_chans = p_conv_data -> num_dch_in_flow ; if ( is_control_frame ) { return fpi ; } offset = 2 ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; macinf -> ctmux [ 0 ] = 1 ; macinf -> content [ 0 ] = MAC_CONTENT_DCCH ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; rlcinf -> urnti [ 0 ] = fpi -> channel ; rlcinf -> mode [ 0 ] = RLC_AM ; rlcinf -> li_size [ 0 ] = RLC_LI_7BITS ; rlcinf -> ciphered [ 0 ] = FALSE ; rlcinf -> deciphered [ 0 ] = FALSE ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; break ; case CHANNEL_RACH_FDD : fpi -> num_chans = p_conv_data -> num_dch_in_flow ; if ( is_control_frame ) { return fpi ; } offset = 2 ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; for ( chan = 0 ; chan < fpi -> num_chans ; chan ++ ) { macinf -> ctmux [ chan ] = 1 ; macinf -> content [ chan ] = MAC_CONTENT_DCCH ; rlcinf -> urnti [ chan ] = fpi -> com_context_id ; } p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; break ; case CHANNEL_HSDSCH_COMMON : rlcinf = wmem_new0 ( wmem_file_scope ( ) , rlc_info ) ; macinf = wmem_new0 ( wmem_file_scope ( ) , umts_mac_info ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_umts_mac , 0 , macinf ) ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_rlc , 0 , rlcinf ) ; break ; default : expert_add_info ( pinfo , NULL , & ei_fp_transport_channel_type_unknown ) ; return NULL ; } for ( i = 0 ; i < fpi -> num_chans ; i ++ ) { tfi = tvb_get_guint8 ( tvb , offset ) ; if ( pinfo -> link_dir == P2P_DIR_UL ) { fpi -> chan_tf_size [ i ] = p_conv_data -> fp_dch_channel_info [ i ] . ul_chan_tf_size [ tfi ] ; fpi -> chan_num_tbs [ i ] = p_conv_data -> fp_dch_channel_info [ i ] . ul_chan_num_tbs [ tfi ] ; } else { fpi -> chan_tf_size [ i ] = p_conv_data -> fp_dch_channel_info [ i ] . dl_chan_tf_size [ tfi ] ; fpi -> chan_num_tbs [ i ] = p_conv_data -> fp_dch_channel_info [ i ] . dl_chan_num_tbs [ tfi ] ; } offset ++ ; } return fpi ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; c_t = ( <S2SV_ModStart> , 4 ) + 1 ) % 0xf <S2SV_ModStart> ] = c_t <S2SV_ModEnd> ; macinf -> <S2SV_ModStart> lchId_type_table [ c_t <S2SV_ModEnd> ] ; rlcinf <S2SV_ModStart> lchId_rlc_map [ c_t <S2SV_ModEnd> ] ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int ECDSA_verify ( int type , const unsigned char * dgst , int dgst_len , const unsigned char * sigbuf , int sig_len , EC_KEY * eckey ) { ECDSA_SIG * s ; <S2SV_StartBug> int ret = - 1 ; <S2SV_EndBug> s = ECDSA_SIG_new ( ) ; if ( s == NULL ) return ( ret ) ; <S2SV_StartBug> if ( d2i_ECDSA_SIG ( & s , & sigbuf , sig_len ) == NULL ) goto err ; <S2SV_EndBug> ret = ECDSA_do_verify ( dgst , dgst_len , s , eckey ) ; err : <S2SV_StartBug> ECDSA_SIG_free ( s ) ; <S2SV_EndBug> return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * s ; const unsigned char * p = sigbuf ; unsigned char * der = NULL ; int derlen = - 1 ; <S2SV_ModStart> s , & p <S2SV_ModEnd> , sig_len ) <S2SV_ModStart> == NULL ) goto err ; derlen = i2d_ECDSA_SIG ( s , & der ) ; if ( derlen != sig_len || memcmp ( sigbuf , der , derlen ) ) <S2SV_ModStart> ; err : if ( derlen > 0 ) { OPENSSL_cleanse ( der , derlen ) ; OPENSSL_free ( der ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4350\n\n```\nCWE-310 static void sctp_v6_get_dst ( struct sctp_transport * t , union sctp_addr * saddr , struct flowi * fl , struct sock * sk ) { struct sctp_association * asoc = t -> asoc ; struct dst_entry * dst = NULL ; struct flowi6 * fl6 = & fl -> u . ip6 ; struct sctp_bind_addr * bp ; <S2SV_StartBug> struct sctp_sockaddr_entry * laddr ; <S2SV_EndBug> union sctp_addr * baddr = NULL ; union sctp_addr * daddr = & t -> ipaddr ; union sctp_addr dst_saddr ; <S2SV_StartBug> __u8 matchlen = 0 ; <S2SV_EndBug> __u8 bmatchlen ; sctp_scope_t scope ; memset ( fl6 , 0 , sizeof ( struct flowi6 ) ) ; fl6 -> daddr = daddr -> v6 . sin6_addr ; fl6 -> fl6_dport = daddr -> v6 . sin6_port ; fl6 -> flowi6_proto = IPPROTO_SCTP ; if ( ipv6_addr_type ( & daddr -> v6 . sin6_addr ) & IPV6_ADDR_LINKLOCAL ) fl6 -> flowi6_oif = daddr -> v6 . sin6_scope_id ; pr_debug ( \"%s:<S2SV_blank>dst=%pI6<S2SV_blank>\" , __func__ , & fl6 -> daddr ) ; if ( asoc ) fl6 -> fl6_sport = htons ( asoc -> base . bind_addr . port ) ; if ( saddr ) { fl6 -> saddr = saddr -> v6 . sin6_addr ; fl6 -> fl6_sport = saddr -> v6 . sin6_port ; pr_debug ( \"src=%pI6<S2SV_blank>-<S2SV_blank>\" , & fl6 -> saddr ) ; } <S2SV_StartBug> dst = ip6_dst_lookup_flow ( sk , fl6 , NULL , false ) ; <S2SV_EndBug> if ( ! asoc || saddr ) goto out ; bp = & asoc -> base . bind_addr ; scope = sctp_scope ( daddr ) ; if ( ! IS_ERR ( dst ) ) { sctp_v6_to_addr ( & dst_saddr , & fl6 -> saddr , htons ( bp -> port ) ) ; rcu_read_lock ( ) ; list_for_each_entry_rcu ( laddr , & bp -> address_list , list ) { if ( ! laddr -> valid || ( laddr -> state != SCTP_ADDR_SRC ) ) continue ; if ( ( laddr -> a . sa . sa_family == AF_INET6 ) && ( sctp_v6_cmp_addr ( & dst_saddr , & laddr -> a ) ) ) { rcu_read_unlock ( ) ; goto out ; } } rcu_read_unlock ( ) ; dst_release ( dst ) ; dst = NULL ; } rcu_read_lock ( ) ; list_for_each_entry_rcu ( laddr , & bp -> address_list , list ) { if ( ! laddr -> valid ) continue ; if ( ( laddr -> state == SCTP_ADDR_SRC ) && ( laddr -> a . sa . sa_family == AF_INET6 ) && ( scope <= sctp_scope ( & laddr -> a ) ) ) { bmatchlen = sctp_v6_addr_match_len ( daddr , & laddr -> a ) ; if ( ! baddr || ( matchlen < bmatchlen ) ) { baddr = & laddr -> a ; matchlen = bmatchlen ; } } } rcu_read_unlock ( ) ; if ( baddr ) { fl6 -> saddr = baddr -> v6 . sin6_addr ; fl6 -> fl6_sport = baddr -> v6 . sin6_port ; <S2SV_StartBug> dst = ip6_dst_lookup_flow ( sk , fl6 , NULL , false ) ; <S2SV_EndBug> } out : if ( ! IS_ERR_OR_NULL ( dst ) ) { struct rt6_info * rt ; rt = ( struct rt6_info * ) dst ; t -> dst = dst ; t -> dst_cookie = rt -> rt6i_node ? rt -> rt6i_node -> fn_sernum : 0 ; pr_debug ( \"rt6_dst:%pI6<S2SV_blank>rt6_src:%pI6\\\\n\" , & rt -> rt6i_dst . addr , & fl6 -> saddr ) ; } else { t -> dst = NULL ; pr_debug ( \"no<S2SV_blank>route\\\\n\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bp ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct <S2SV_ModStart> sctp_addr dst_saddr ; struct in6_addr * final_p , final ; <S2SV_ModStart> ) ; } final_p = fl6_update_dst ( fl6 , np -> opt , & final ) ; <S2SV_ModStart> , fl6 , final_p <S2SV_ModEnd> , false ) <S2SV_ModStart> . sin6_port ; final_p = fl6_update_dst ( fl6 , np -> opt , & final ) ; <S2SV_ModStart> , fl6 , final_p <S2SV_ModEnd> , false )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13224\n\n```\nCWE-416 extern int onig_new_deluxe ( regex_t * * reg , const UChar * pattern , const UChar * pattern_end , OnigCompileInfo * ci , OnigErrorInfo * einfo ) { int r ; UChar * cpat , * cpat_end ; if ( IS_NOT_NULL ( einfo ) ) einfo -> par = ( UChar * ) NULL ; if ( ci -> pattern_enc != ci -> target_enc ) { <S2SV_StartBug> r = conv_encoding ( ci -> pattern_enc , ci -> target_enc , pattern , pattern_end , <S2SV_EndBug> & cpat , & cpat_end ) ; if ( r != 0 ) return r ; } else { cpat = ( UChar * ) pattern ; cpat_end = ( UChar * ) pattern_end ; } * reg = ( regex_t * ) xmalloc ( sizeof ( regex_t ) ) ; if ( IS_NULL ( * reg ) ) { r = ONIGERR_MEMORY ; goto err2 ; } r = onig_reg_init ( * reg , ci -> option , ci -> case_fold_flag , ci -> target_enc , ci -> syntax ) ; if ( r != 0 ) goto err ; r = onig_compile ( * reg , cpat , cpat_end , einfo ) ; if ( r != 0 ) { err : onig_free ( * reg ) ; * reg = NULL ; } err2 : if ( cpat != pattern ) xfree ( cpat ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> target_enc ) { return ONIGERR_NOT_SUPPORTED_ENCODING_COMBINATION <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static char * get_header ( FILE * fp ) { <S2SV_StartBug> long start ; <S2SV_EndBug> <S2SV_StartBug> char * header ; <S2SV_EndBug> header = calloc ( 1 , 1024 ) ; <S2SV_StartBug> start = ftell ( fp ) ; <S2SV_EndBug> fseek ( fp , 0 , SEEK_SET ) ; SAFE_E ( fread ( header , 1 , 1023 , fp ) , 1023 , \"Failed<S2SV_blank>to<S2SV_blank>load<S2SV_blank>PDF<S2SV_blank>header.\\\\n\" ) ; fseek ( fp , start , SEEK_SET ) ; return header ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fp ) { <S2SV_ModEnd> char * header <S2SV_ModStart> char * header = safe_calloc ( <S2SV_ModEnd> 1024 ) ; <S2SV_ModStart> 1024 ) ; long\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10049\n\n```\nCWE-119 static Image * ReadRLEImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define SkipLinesOp 0x01 # define SetColorOp 0x02 # define SkipPixelsOp 0x03 # define ByteDataOp 0x05 # define RunDataOp 0x06 # define EOFOp 0x07 char magick [ 12 ] ; Image * image ; IndexPacket index ; int opcode , operand , status ; MagickStatusType flags ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; register IndexPacket * indexes ; register ssize_t x ; register PixelPacket * q ; register ssize_t i ; register unsigned char * p ; size_t bits_per_pixel , map_length , number_colormaps , number_planes , number_planes_filled , one , offset , pixel_info_length ; ssize_t count , y ; unsigned char background_color [ 256 ] , * colormap , pixel , plane , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 2 ) || ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { image -> page . x = ReadBlobLSBShort ( image ) ; image -> page . y = ReadBlobLSBShort ( image ) ; image -> columns = ReadBlobLSBShort ( image ) ; image -> rows = ReadBlobLSBShort ( image ) ; flags = ( MagickStatusType ) ReadBlobByte ( image ) ; image -> matte = flags & 0x04 ? MagickTrue : MagickFalse ; number_planes = ( size_t ) ReadBlobByte ( image ) ; bits_per_pixel = ( size_t ) ReadBlobByte ( image ) ; number_colormaps = ( size_t ) ReadBlobByte ( image ) ; map_length = ( unsigned char ) ReadBlobByte ( image ) ; if ( map_length >= 32 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; one = 1 ; map_length = one << map_length ; if ( ( number_planes == 0 ) || ( number_planes == 2 ) || ( ( flags & 0x04 ) && ( number_colormaps > 254 ) ) || ( bits_per_pixel != 8 ) || ( image -> columns == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( flags & 0x02 ) { for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) background_color [ i ] = 0 ; ( void ) ReadBlobByte ( image ) ; } else { p = background_color ; for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) * p ++ = ( unsigned char ) ReadBlobByte ( image ) ; } if ( ( number_planes & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } colormap = ( unsigned char * ) NULL ; if ( number_colormaps != 0 ) { colormap = ( unsigned char * ) AcquireQuantumMemory ( number_colormaps , 3 * map_length * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; for ( i = 0 ; i < ( ssize_t ) number_colormaps ; i ++ ) for ( x = 0 ; x < ( ssize_t ) map_length ; x ++ ) * p ++ = ( unsigned char ) ScaleShortToQuantum ( ReadBlobLSBShort ( image ) ) ; } if ( ( flags & 0x08 ) != 0 ) { char * comment ; size_t length ; length = ReadBlobLSBShort ( image ) ; if ( length != 0 ) { comment = ( char * ) AcquireQuantumMemory ( length , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ReadBlob ( image , length - 1 , ( unsigned char * ) comment ) ; comment [ length - 1 ] = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment ) ; comment = DestroyString ( comment ) ; if ( ( length & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; } } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( image -> matte != MagickFalse ) number_planes ++ ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; number_planes_filled = ( number_planes % 2 == 0 ) ? number_planes : number_planes + 1 ; if ( ( number_pixels * number_planes_filled ) != ( size_t ) ( number_pixels * number_planes_filled ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info = AcquireVirtualMemory ( image -> columns , image -> rows * <S2SV_StartBug> number_planes_filled * sizeof ( * pixels ) ) ; <S2SV_EndBug> if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> pixel_info_length = image -> columns * image -> rows * number_planes_filled ; <S2SV_EndBug> pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( flags & 0x01 ) && ! ( flags & 0x02 ) ) { ssize_t j ; p = pixels ; for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { if ( image -> matte == MagickFalse ) for ( j = 0 ; j < ( ssize_t ) number_planes ; j ++ ) * p ++ = background_color [ j ] ; else { for ( j = 0 ; j < ( ssize_t ) ( number_planes - 1 ) ; j ++ ) * p ++ = background_color [ j ] ; * p ++ = 0 ; } } } plane = 0 ; x = 0 ; y = 0 ; opcode = ReadBlobByte ( image ) ; do { switch ( opcode & 0x3f ) { case SkipLinesOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; x = 0 ; y += operand ; break ; } case SetColorOp : { operand = ReadBlobByte ( image ) ; plane = ( unsigned char ) operand ; if ( plane == 255 ) plane = ( unsigned char ) ( number_planes - 1 ) ; x = 0 ; break ; } case SkipPixelsOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; x += operand ; break ; } case ByteDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } if ( operand & 0x01 ) ( void ) ReadBlobByte ( image ) ; x += operand ; break ; } case RunDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; pixel = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) ReadBlobByte ( image ) ; operand ++ ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; p = pixels + offset ; if ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } x += operand ; break ; } default : break ; } opcode = ReadBlobByte ( image ) ; } while ( ( ( opcode & 0x3f ) != EOFOp ) && ( opcode != EOF ) ) ; if ( number_colormaps != 0 ) { MagickStatusType mask ; mask = ( MagickStatusType ) ( map_length - 1 ) ; p = pixels ; x = ( ssize_t ) number_planes ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { if ( IsValidColormapIndex ( image , * p & mask , & index , exception ) == MagickFalse ) break ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } else if ( ( number_planes >= 3 ) && ( number_colormaps >= 3 ) ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) for ( x = 0 ; x < ( ssize_t ) number_planes ; x ++ ) { if ( IsValidColormapIndex ( image , ( size_t ) ( x * map_length + ( * p & mask ) ) , & index , exception ) == MagickFalse ) break ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } if ( ( i < ( ssize_t ) number_pixels ) || ( x < ( ssize_t ) number_planes ) ) { colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } } if ( number_planes >= 3 ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelBlue ( q , ScaleCharToQuantum ( * p ++ ) ) ; if ( image -> matte != MagickFalse ) SetPixelAlpha ( q , ScaleCharToQuantum ( * p ++ ) ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( number_colormaps == 0 ) map_length = 256 ; if ( AcquireImageColormap ( image , map_length ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) i ) ; } else if ( number_colormaps > 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( * p ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( * ( p + map_length ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( * ( p + map_length * 2 ) ) ; p ++ ; } p = pixels ; if ( image -> matte == MagickFalse ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) SetPixelIndex ( indexes + x , * p ++ ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image ) ; } else { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( IsValidColormapIndex ( image , * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelRed ( q , image -> colormap [ ( ssize_t ) index ] . red ) ; if ( IsValidColormapIndex ( image , * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelGreen ( q , image -> colormap [ ( ssize_t ) index ] . green ) ; if ( IsValidColormapIndex ( image , * p ++ , & index , exception ) == MagickFalse ) break ; SetPixelBlue ( q , image -> colormap [ ( ssize_t ) index ] . blue ) ; SetPixelAlpha ( q , ScaleCharToQuantum ( * p ++ ) ) ; q ++ ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } image -> colormap = ( PixelPacket * ) RelinquishMagickMemory ( image -> colormap ) ; image -> storage_class = DirectClass ; image -> colors = 0 ; } } if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; ( void ) ReadBlobByte ( image ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rows * MagickMax ( number_planes_filled , 4 ) <S2SV_ModEnd> * sizeof ( <S2SV_ModStart> -> rows * MagickMax ( number_planes_filled , 4 ) <S2SV_ModEnd> ; pixels =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13689\n\n```\nCWE-125 static const u_char * ikev1_id_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , const u_char * ep _U_ , uint32_t phase , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { # define USE_IPSECDOI_IN_PHASE1 1 const struct ikev1_pl_id * p ; struct ikev1_pl_id id ; static const char * idtypestr [ ] = { \"IPv4\" , \"IPv4net\" , \"IPv6\" , \"IPv6net\" , } ; static const char * ipsecidtypestr [ ] = { NULL , \"IPv4\" , \"FQDN\" , \"user<S2SV_blank>FQDN\" , \"IPv4net\" , \"IPv6\" , \"IPv6net\" , \"IPv4range\" , \"IPv6range\" , \"ASN1<S2SV_blank>DN\" , \"ASN1<S2SV_blank>GN\" , \"keyid\" , } ; int len ; const u_char * data ; ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_ID ) ) ) ; p = ( const struct ikev1_pl_id * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & id , ext , sizeof ( id ) ) ; if ( sizeof ( * p ) < item_len ) { data = ( const u_char * ) ( p + 1 ) ; len = item_len - sizeof ( * p ) ; } else { data = NULL ; len = 0 ; } # if 0 ND_PRINT ( ( ndo , \"<S2SV_blank>[phase=%d<S2SV_blank>doi=%d<S2SV_blank>proto=%d]\" , phase , doi , proto ) ) ; # endif switch ( phase ) { # ifndef USE_IPSECDOI_IN_PHASE1 case 1 : # endif default : ND_PRINT ( ( ndo , \"<S2SV_blank>idtype=%s\" , STR_OR_ID ( id . d . id_type , idtypestr ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>doi_data=%u\" , ( uint32_t ) ( ntohl ( id . d . doi_data ) & 0xffffff ) ) ) ; break ; # ifdef USE_IPSECDOI_IN_PHASE1 case 1 : # endif case 2 : { const struct ipsecdoi_id * doi_p ; struct ipsecdoi_id doi_id ; const char * p_name ; doi_p = ( const struct ipsecdoi_id * ) ext ; ND_TCHECK ( * doi_p ) ; UNALIGNED_MEMCPY ( & doi_id , ext , sizeof ( doi_id ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>idtype=%s\" , STR_OR_ID ( doi_id . type , ipsecidtypestr ) ) ) ; if ( ! ndo -> ndo_nflag && doi_id . proto_id && ( p_name = netdb_protoname ( doi_id . proto_id ) ) != NULL ) ND_PRINT ( ( ndo , \"<S2SV_blank>protoid=%s\" , p_name ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>protoid=%u\" , doi_id . proto_id ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>port=%d\" , ntohs ( doi_id . port ) ) ) ; if ( ! len ) break ; if ( data == NULL ) goto trunc ; ND_TCHECK2 ( * data , len ) ; switch ( doi_id . type ) { case IPSECDOI_ID_IPV4_ADDR : if ( len < 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>4]\" , len ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s\" , len , ipaddr_string ( ndo , data ) ) ) ; len = 0 ; break ; case IPSECDOI_ID_FQDN : case IPSECDOI_ID_USER_FQDN : { int i ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>\" , len ) ) ; for ( i = 0 ; i < len ; i ++ ) safeputchar ( ndo , data [ i ] ) ; len = 0 ; break ; } case IPSECDOI_ID_IPV4_ADDR_SUBNET : { const u_char * mask ; if ( len < 8 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>8]\" , len ) ) ; else { mask = data + sizeof ( struct in_addr ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s/%u.%u.%u.%u\" , len , ipaddr_string ( ndo , data ) , mask [ 0 ] , mask [ 1 ] , mask [ 2 ] , mask [ 3 ] ) ) ; } len = 0 ; break ; } case IPSECDOI_ID_IPV6_ADDR : if ( len < 16 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>16]\" , len ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s\" , len , ip6addr_string ( ndo , data ) ) ) ; len = 0 ; break ; case IPSECDOI_ID_IPV6_ADDR_SUBNET : { const u_char * mask ; <S2SV_StartBug> if ( len < 20 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>20]\" , len ) ) ; else { mask = ( const u_char * ) ( data + sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s/0x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x\" , len , ip6addr_string ( ndo , data ) , mask [ 0 ] , mask [ 1 ] , mask [ 2 ] , mask [ 3 ] , mask [ 4 ] , mask [ 5 ] , mask [ 6 ] , mask [ 7 ] , mask [ 8 ] , mask [ 9 ] , mask [ 10 ] , mask [ 11 ] , mask [ 12 ] , mask [ 13 ] , mask [ 14 ] , mask [ 15 ] ) ) ; } len = 0 ; break ; } case IPSECDOI_ID_IPV4_ADDR_RANGE : if ( len < 8 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>8]\" , len ) ) ; else { ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s-%s\" , len , ipaddr_string ( ndo , data ) , ipaddr_string ( ndo , data + sizeof ( struct in_addr ) ) ) ) ; } len = 0 ; break ; case IPSECDOI_ID_IPV6_ADDR_RANGE : if ( len < 32 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>32]\" , len ) ) ; else { ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>%s-%s\" , len , ip6addr_string ( ndo , data ) , ip6addr_string ( ndo , data + sizeof ( struct in6_addr ) ) ) ) ; } len = 0 ; break ; case IPSECDOI_ID_DER_ASN1_DN : case IPSECDOI_ID_DER_ASN1_GN : case IPSECDOI_ID_KEY_ID : break ; } break ; } } if ( data && len ) { ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d\" , len ) ) ; if ( 2 < ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) data , len ) ) goto trunc ; } } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_ID ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( len < 32 ) ND_PRINT ( ( ndo , \"<S2SV_blank>len=%d<S2SV_blank>[bad:<S2SV_blank><<S2SV_blank>32]\" <S2SV_ModEnd> , len )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16840\n\n```\nCWE-416 CURLcode Curl_close ( struct Curl_easy * data ) { struct Curl_multi * m ; if ( ! data ) return CURLE_OK ; Curl_expire_clear ( data ) ; m = data -> multi ; if ( m ) curl_multi_remove_handle ( data -> multi , data ) ; <S2SV_StartBug> if ( data -> multi_easy ) <S2SV_EndBug> <S2SV_StartBug> curl_multi_cleanup ( data -> multi_easy ) ; <S2SV_EndBug> Curl_llist_destroy ( & data -> state . timeoutlist , NULL ) ; data -> magic = 0 ; if ( data -> state . rangestringalloc ) free ( data -> state . range ) ; Curl_free_request_state ( data ) ; Curl_ssl_close_all ( data ) ; Curl_safefree ( data -> state . first_host ) ; Curl_safefree ( data -> state . scratch ) ; Curl_ssl_free_certinfo ( data ) ; free ( data -> req . newurl ) ; data -> req . newurl = NULL ; if ( data -> change . referer_alloc ) { Curl_safefree ( data -> change . referer ) ; data -> change . referer_alloc = FALSE ; } data -> change . referer = NULL ; Curl_up_free ( data ) ; Curl_safefree ( data -> state . buffer ) ; Curl_safefree ( data -> state . headerbuff ) ; Curl_safefree ( data -> state . ulbuf ) ; Curl_flush_cookies ( data , 1 ) ; Curl_digest_cleanup ( data ) ; Curl_safefree ( data -> info . contenttype ) ; Curl_safefree ( data -> info . wouldredirect ) ; Curl_resolver_cleanup ( data -> state . resolver ) ; Curl_http2_cleanup_dependencies ( data ) ; Curl_convert_close ( data ) ; if ( data -> share ) { Curl_share_lock ( data , CURL_LOCK_DATA_SHARE , CURL_LOCK_ACCESS_SINGLE ) ; data -> share -> dirty -- ; Curl_share_unlock ( data , CURL_LOCK_DATA_SHARE ) ; } Curl_wildcard_dtor ( & data -> wildcard ) ; Curl_freeset ( data ) ; free ( data ) ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> multi_easy ) { <S2SV_ModStart> multi_easy ) ; data -> multi_easy = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6194\n\n```\nCWE-119 static int search_old_relocation ( struct reloc_struct_t * reloc_table , ut32 addr_to_patch , int n_reloc ) { int i ; for ( i = 0 ; i < n_reloc ; i ++ ) { if ( addr_to_patch == reloc_table [ i ] . data_offset ) { return i ; } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 int inet6_csk_xmit ( struct sock * sk , struct sk_buff * skb , struct flowi * fl_unused ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct flowi6 fl6 ; struct dst_entry * dst ; int res ; dst = inet6_csk_route_socket ( sk , & fl6 ) ; if ( IS_ERR ( dst ) ) { sk -> sk_err_soft = - PTR_ERR ( dst ) ; sk -> sk_route_caps = 0 ; kfree_skb ( skb ) ; return PTR_ERR ( dst ) ; } rcu_read_lock ( ) ; skb_dst_set_noref ( skb , dst ) ; fl6 . daddr = sk -> sk_v6_daddr ; <S2SV_StartBug> res = ip6_xmit ( sk , skb , & fl6 , np -> opt , np -> tclass ) ; <S2SV_EndBug> rcu_read_unlock ( ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19083\n\n```\nCWE-401 static struct clock_source * dce120_clock_source_create ( struct dc_context * ctx , struct dc_bios * bios , enum clock_source_id id , const struct dce110_clk_src_regs * regs , bool dp_clk_src ) { struct dce110_clk_src * clk_src = kzalloc ( sizeof ( * clk_src ) , GFP_KERNEL ) ; if ( ! clk_src ) return NULL ; if ( dce112_clk_src_construct ( clk_src , ctx , bios , id , regs , & cs_shift , & cs_mask ) ) { clk_src -> base . dp_clk_src = dp_clk_src ; return & clk_src -> base ; } <S2SV_StartBug> BREAK_TO_DEBUGGER ( ) ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> base ; } kfree ( clk_src ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_build_intra_predictors_mbuv_s_c ( MACROBLOCKD * x , unsigned char * uabove_row , unsigned char * vabove_row , unsigned char * uleft , unsigned char * vleft , int left_stride , unsigned char * upred_ptr , unsigned char * vpred_ptr , int pred_stride ) { unsigned char uleft_col [ 8 ] ; unsigned char utop_left = uabove_row [ - 1 ] ; unsigned char vleft_col [ 8 ] ; unsigned char vtop_left = vabove_row [ - 1 ] ; int i , j ; for ( i = 0 ; i < 8 ; i ++ ) { uleft_col [ i ] = uleft [ i * left_stride ] ; vleft_col [ i ] = vleft [ i * left_stride ] ; } switch ( x -> mode_info_context -> mbmi . uv_mode ) { case DC_PRED : { int expected_udc ; int expected_vdc ; int shift ; int Uaverage = 0 ; int Vaverage = 0 ; if ( x -> up_available ) { for ( i = 0 ; i < 8 ; i ++ ) { Uaverage += uabove_row [ i ] ; Vaverage += vabove_row [ i ] ; } } if ( x -> left_available ) { for ( i = 0 ; i < 8 ; i ++ ) { Uaverage += uleft_col [ i ] ; Vaverage += vleft_col [ i ] ; } } if ( ! x -> up_available && ! x -> left_available ) { expected_udc = 128 ; expected_vdc = 128 ; } else { shift = 2 + x -> up_available + x -> left_available ; expected_udc = ( Uaverage + ( 1 << ( shift - 1 ) ) ) >> shift ; expected_vdc = ( Vaverage + ( 1 << ( shift - 1 ) ) ) >> shift ; } for ( i = 0 ; i < 8 ; i ++ ) { <S2SV_StartBug> vpx_memset ( upred_ptr , expected_udc , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( vpred_ptr , expected_vdc , 8 ) ; <S2SV_EndBug> upred_ptr += pred_stride ; vpred_ptr += pred_stride ; } } break ; case V_PRED : { for ( i = 0 ; i < 8 ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( upred_ptr , uabove_row , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( vpred_ptr , vabove_row , 8 ) ; <S2SV_EndBug> upred_ptr += pred_stride ; vpred_ptr += pred_stride ; } } break ; case H_PRED : { for ( i = 0 ; i < 8 ; i ++ ) { <S2SV_StartBug> vpx_memset ( upred_ptr , uleft_col [ i ] , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( vpred_ptr , vleft_col [ i ] , 8 ) ; <S2SV_EndBug> upred_ptr += pred_stride ; vpred_ptr += pred_stride ; } } break ; case TM_PRED : { for ( i = 0 ; i < 8 ; i ++ ) { for ( j = 0 ; j < 8 ; j ++ ) { int predu = uleft_col [ i ] + uabove_row [ j ] - utop_left ; int predv = vleft_col [ i ] + vabove_row [ j ] - vtop_left ; if ( predu < 0 ) predu = 0 ; if ( predu > 255 ) predu = 255 ; if ( predv < 0 ) predv = 0 ; if ( predv > 255 ) predv = 255 ; upred_ptr [ j ] = predu ; vpred_ptr [ j ] = predv ; } upred_ptr += pred_stride ; vpred_ptr += pred_stride ; } } break ; case B_PRED : case NEARESTMV : case NEARMV : case ZEROMV : case NEWMV : case SPLITMV : case MB_MODE_COUNT : break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( upred_ptr , <S2SV_ModStart> 8 ) ; memset <S2SV_ModEnd> ( vpred_ptr , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( upred_ptr , <S2SV_ModStart> 8 ) ; memcpy <S2SV_ModEnd> ( vpred_ptr , <S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( upred_ptr , <S2SV_ModStart> 8 ) ; memset <S2SV_ModEnd> ( vpred_ptr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8630\n\n```\nCWE-284 int x86_decode_insn ( struct x86_emulate_ctxt * ctxt , void * insn , int insn_len ) { int rc = X86EMUL_CONTINUE ; int mode = ctxt -> mode ; int def_op_bytes , def_ad_bytes , goffset , simd_prefix ; bool op_prefix = false ; bool has_seg_override = false ; struct opcode opcode ; ctxt -> memop . type = OP_NONE ; ctxt -> memopp = NULL ; ctxt -> _eip = ctxt -> eip ; ctxt -> fetch . ptr = ctxt -> fetch . data ; ctxt -> fetch . end = ctxt -> fetch . data + insn_len ; ctxt -> opcode_len = 1 ; if ( insn_len > 0 ) memcpy ( ctxt -> fetch . data , insn , insn_len ) ; else { rc = __do_insn_fetch_bytes ( ctxt , 1 ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; } switch ( mode ) { case X86EMUL_MODE_REAL : case X86EMUL_MODE_VM86 : case X86EMUL_MODE_PROT16 : def_op_bytes = def_ad_bytes = 2 ; break ; case X86EMUL_MODE_PROT32 : def_op_bytes = def_ad_bytes = 4 ; break ; # ifdef CONFIG_X86_64 case X86EMUL_MODE_PROT64 : def_op_bytes = 4 ; def_ad_bytes = 8 ; break ; # endif default : return EMULATION_FAILED ; } ctxt -> op_bytes = def_op_bytes ; ctxt -> ad_bytes = def_ad_bytes ; for ( ; ; ) { switch ( ctxt -> b = insn_fetch ( u8 , ctxt ) ) { case 0x66 : op_prefix = true ; ctxt -> op_bytes = def_op_bytes ^ 6 ; break ; case 0x67 : if ( mode == X86EMUL_MODE_PROT64 ) ctxt -> ad_bytes = def_ad_bytes ^ 12 ; else ctxt -> ad_bytes = def_ad_bytes ^ 6 ; break ; case 0x26 : case 0x2e : case 0x36 : case 0x3e : has_seg_override = true ; ctxt -> seg_override = ( ctxt -> b >> 3 ) & 3 ; break ; case 0x64 : case 0x65 : has_seg_override = true ; ctxt -> seg_override = ctxt -> b & 7 ; break ; case 0x40 ... 0x4f : if ( mode != X86EMUL_MODE_PROT64 ) goto done_prefixes ; ctxt -> rex_prefix = ctxt -> b ; continue ; case 0xf0 : ctxt -> lock_prefix = 1 ; break ; case 0xf2 : case 0xf3 : ctxt -> rep_prefix = ctxt -> b ; break ; default : goto done_prefixes ; } ctxt -> rex_prefix = 0 ; } done_prefixes : if ( ctxt -> rex_prefix & 8 ) ctxt -> op_bytes = 8 ; opcode = opcode_table [ ctxt -> b ] ; if ( ctxt -> b == 0x0f ) { ctxt -> opcode_len = 2 ; ctxt -> b = insn_fetch ( u8 , ctxt ) ; opcode = twobyte_table [ ctxt -> b ] ; if ( ctxt -> b == 0x38 ) { ctxt -> opcode_len = 3 ; ctxt -> b = insn_fetch ( u8 , ctxt ) ; opcode = opcode_map_0f_38 [ ctxt -> b ] ; } } ctxt -> d = opcode . flags ; if ( ctxt -> d & ModRM ) ctxt -> modrm = insn_fetch ( u8 , ctxt ) ; if ( ctxt -> opcode_len == 1 && ( ctxt -> b == 0xc5 || ctxt -> b == 0xc4 ) && ( mode == X86EMUL_MODE_PROT64 || ( ctxt -> modrm & 0xc0 ) == 0xc0 ) ) { ctxt -> d = NotImpl ; } while ( ctxt -> d & GroupMask ) { switch ( ctxt -> d & GroupMask ) { case Group : goffset = ( ctxt -> modrm >> 3 ) & 7 ; opcode = opcode . u . group [ goffset ] ; break ; case GroupDual : goffset = ( ctxt -> modrm >> 3 ) & 7 ; if ( ( ctxt -> modrm >> 6 ) == 3 ) opcode = opcode . u . gdual -> mod3 [ goffset ] ; else opcode = opcode . u . gdual -> mod012 [ goffset ] ; break ; case RMExt : goffset = ctxt -> modrm & 7 ; opcode = opcode . u . group [ goffset ] ; break ; case Prefix : if ( ctxt -> rep_prefix && op_prefix ) return EMULATION_FAILED ; simd_prefix = op_prefix ? 0x66 : ctxt -> rep_prefix ; switch ( simd_prefix ) { case 0x00 : opcode = opcode . u . gprefix -> pfx_no ; break ; case 0x66 : opcode = opcode . u . gprefix -> pfx_66 ; break ; case 0xf2 : opcode = opcode . u . gprefix -> pfx_f2 ; break ; case 0xf3 : opcode = opcode . u . gprefix -> pfx_f3 ; break ; } break ; case Escape : if ( ctxt -> modrm > 0xbf ) opcode = opcode . u . esc -> high [ ctxt -> modrm - 0xc0 ] ; else opcode = opcode . u . esc -> op [ ( ctxt -> modrm >> 3 ) & 7 ] ; break ; case InstrDual : if ( ( ctxt -> modrm >> 6 ) == 3 ) opcode = opcode . u . idual -> mod3 ; else opcode = opcode . u . idual -> mod012 ; break ; case ModeDual : if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) opcode = opcode . u . mdual -> mode64 ; else opcode = opcode . u . mdual -> mode32 ; break ; default : return EMULATION_FAILED ; } ctxt -> d &= ~ ( u64 ) GroupMask ; ctxt -> d |= opcode . flags ; } if ( ctxt -> d == 0 ) return EMULATION_FAILED ; ctxt -> execute = opcode . u . execute ; if ( unlikely ( ctxt -> ud ) && likely ( ! ( ctxt -> d & EmulateOnUD ) ) ) return EMULATION_FAILED ; if ( unlikely ( ctxt -> d & ( NotImpl | Stack | Op3264 | Sse | Mmx | Intercept | CheckPerm | NearBranch | No16 ) ) ) { ctxt -> check_perm = opcode . check_perm ; ctxt -> intercept = opcode . intercept ; if ( ctxt -> d & NotImpl ) return EMULATION_FAILED ; if ( mode == X86EMUL_MODE_PROT64 ) { if ( ctxt -> op_bytes == 4 && ( ctxt -> d & Stack ) ) ctxt -> op_bytes = 8 ; else if ( ctxt -> d & NearBranch ) ctxt -> op_bytes = 8 ; } if ( ctxt -> d & Op3264 ) { if ( mode == X86EMUL_MODE_PROT64 ) ctxt -> op_bytes = 8 ; else ctxt -> op_bytes = 4 ; } if ( ( ctxt -> d & No16 ) && ctxt -> op_bytes == 2 ) ctxt -> op_bytes = 4 ; if ( ctxt -> d & Sse ) ctxt -> op_bytes = 16 ; else if ( ctxt -> d & Mmx ) ctxt -> op_bytes = 8 ; } if ( ctxt -> d & ModRM ) { rc = decode_modrm ( ctxt , & ctxt -> memop ) ; if ( ! has_seg_override ) { has_seg_override = true ; ctxt -> seg_override = ctxt -> modrm_seg ; } } else if ( ctxt -> d & MemAbs ) rc = decode_abs ( ctxt , & ctxt -> memop ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; if ( ! has_seg_override ) ctxt -> seg_override = VCPU_SREG_DS ; ctxt -> memop . addr . mem . seg = ctxt -> seg_override ; rc = decode_operand ( ctxt , & ctxt -> src , ( ctxt -> d >> SrcShift ) & OpMask ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; rc = decode_operand ( ctxt , & ctxt -> src2 , ( ctxt -> d >> Src2Shift ) & OpMask ) ; if ( rc != X86EMUL_CONTINUE ) goto done ; rc = decode_operand ( ctxt , & ctxt -> dst , ( ctxt -> d >> DstShift ) & OpMask ) ; <S2SV_StartBug> if ( ctxt -> rip_relative ) <S2SV_EndBug> ctxt -> memopp -> addr . mem . ea = address_mask ( ctxt , ctxt -> memopp -> addr . mem . ea + ctxt -> _eip ) ; done : return ( rc != X86EMUL_CONTINUE ) ? EMULATION_FAILED : EMULATION_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt -> rip_relative && likely ( ctxt -> memopp )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4118\n\n```\nCWE-476 BOOL rdp_decrypt ( rdpRdp * rdp , STREAM * s , int length , UINT16 securityFlags ) { BYTE cmac [ 8 ] ; BYTE wmac [ 8 ] ; if ( rdp -> settings -> EncryptionMethods == ENCRYPTION_METHOD_FIPS ) { UINT16 len ; BYTE version , pad ; BYTE * sig ; if ( stream_get_left ( s ) < 12 ) return FALSE ; stream_read_UINT16 ( s , len ) ; stream_read_BYTE ( s , version ) ; stream_read_BYTE ( s , pad ) ; sig = s -> p ; stream_seek ( s , 8 ) ; length -= 12 ; if ( ! security_fips_decrypt ( s -> p , length , rdp ) ) { printf ( \"FATAL:<S2SV_blank>cannot<S2SV_blank>decrypt\\\\n\" ) ; return FALSE ; } if ( ! security_fips_check_signature ( s -> p , length - pad , sig , rdp ) ) { printf ( \"FATAL:<S2SV_blank>invalid<S2SV_blank>packet<S2SV_blank>signature\\\\n\" ) ; return FALSE ; } s -> size -= pad ; return TRUE ; } if ( stream_get_left ( s ) < 8 ) return FALSE ; stream_read ( s , wmac , sizeof ( wmac ) ) ; length -= sizeof ( wmac ) ; <S2SV_StartBug> security_decrypt ( s -> p , length , rdp ) ; <S2SV_EndBug> if ( securityFlags & SEC_SECURE_CHECKSUM ) security_salted_mac_signature ( rdp , s -> p , length , FALSE , cmac ) ; else security_mac_signature ( rdp , s -> p , length , cmac ) ; if ( memcmp ( wmac , cmac , sizeof ( wmac ) ) != 0 ) { printf ( \"WARNING:<S2SV_blank>invalid<S2SV_blank>packet<S2SV_blank>signature\\\\n\" ) ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> wmac ) ; if ( ! <S2SV_ModStart> , rdp ) ) return FALSE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3138\n\n```\nCWE-000 static int acm_probe ( struct usb_interface * intf , const struct usb_device_id * id ) { struct usb_cdc_union_desc * union_header = NULL ; struct usb_cdc_country_functional_desc * cfd = NULL ; unsigned char * buffer = intf -> altsetting -> extra ; int buflen = intf -> altsetting -> extralen ; struct usb_interface * control_interface ; struct usb_interface * data_interface ; struct usb_endpoint_descriptor * epctrl = NULL ; struct usb_endpoint_descriptor * epread = NULL ; struct usb_endpoint_descriptor * epwrite = NULL ; struct usb_device * usb_dev = interface_to_usbdev ( intf ) ; struct acm * acm ; int minor ; int ctrlsize , readsize ; u8 * buf ; u8 ac_management_function = 0 ; u8 call_management_function = 0 ; int call_interface_num = - 1 ; int data_interface_num = - 1 ; unsigned long quirks ; int num_rx_buf ; int i ; unsigned int elength = 0 ; int combined_interfaces = 0 ; struct device * tty_dev ; int rv = - ENOMEM ; quirks = ( unsigned long ) id -> driver_info ; if ( quirks == IGNORE_DEVICE ) return - ENODEV ; num_rx_buf = ( quirks == SINGLE_RX_URB ) ? 1 : ACM_NR ; if ( quirks == NO_UNION_NORMAL ) { data_interface = usb_ifnum_to_if ( usb_dev , 1 ) ; <S2SV_StartBug> control_interface = usb_ifnum_to_if ( usb_dev , 0 ) ; <S2SV_EndBug> goto skip_normal_probe ; } if ( ! buffer ) { dev_err ( & intf -> dev , \"Weird<S2SV_blank>descriptor<S2SV_blank>references\\\\n\" ) ; return - EINVAL ; } if ( ! buflen ) { if ( intf -> cur_altsetting -> endpoint && intf -> cur_altsetting -> endpoint -> extralen && intf -> cur_altsetting -> endpoint -> extra ) { dev_dbg ( & intf -> dev , \"Seeking<S2SV_blank>extra<S2SV_blank>descriptors<S2SV_blank>on<S2SV_blank>endpoint\\\\n\" ) ; buflen = intf -> cur_altsetting -> endpoint -> extralen ; buffer = intf -> cur_altsetting -> endpoint -> extra ; } else { dev_err ( & intf -> dev , \"Zero<S2SV_blank>length<S2SV_blank>descriptor<S2SV_blank>references\\\\n\" ) ; return - EINVAL ; } } while ( buflen > 0 ) { elength = buffer [ 0 ] ; if ( ! elength ) { dev_err ( & intf -> dev , \"skipping<S2SV_blank>garbage<S2SV_blank>byte\\\\n\" ) ; elength = 1 ; goto next_desc ; } if ( buffer [ 1 ] != USB_DT_CS_INTERFACE ) { dev_err ( & intf -> dev , \"skipping<S2SV_blank>garbage\\\\n\" ) ; goto next_desc ; } switch ( buffer [ 2 ] ) { case USB_CDC_UNION_TYPE : if ( elength < sizeof ( struct usb_cdc_union_desc ) ) goto next_desc ; if ( union_header ) { dev_err ( & intf -> dev , \"More<S2SV_blank>than<S2SV_blank>one<S2SV_blank>\" \"union<S2SV_blank>descriptor,<S2SV_blank>skipping<S2SV_blank>...\\\\n\" ) ; goto next_desc ; } union_header = ( struct usb_cdc_union_desc * ) buffer ; break ; case USB_CDC_COUNTRY_TYPE : if ( elength < sizeof ( struct usb_cdc_country_functional_desc ) ) goto next_desc ; cfd = ( struct usb_cdc_country_functional_desc * ) buffer ; break ; case USB_CDC_HEADER_TYPE : break ; case USB_CDC_ACM_TYPE : if ( elength < 4 ) goto next_desc ; ac_management_function = buffer [ 3 ] ; break ; case USB_CDC_CALL_MANAGEMENT_TYPE : if ( elength < 5 ) goto next_desc ; call_management_function = buffer [ 3 ] ; call_interface_num = buffer [ 4 ] ; break ; default : dev_dbg ( & intf -> dev , \"Ignoring<S2SV_blank>descriptor:<S2SV_blank>\" \"type<S2SV_blank>%02x,<S2SV_blank>length<S2SV_blank>%ud\\\\n\" , buffer [ 2 ] , elength ) ; break ; } next_desc : buflen -= elength ; buffer += elength ; } if ( ! union_header ) { if ( call_interface_num > 0 ) { dev_dbg ( & intf -> dev , \"No<S2SV_blank>union<S2SV_blank>descriptor,<S2SV_blank>using<S2SV_blank>call<S2SV_blank>management<S2SV_blank>descriptor\\\\n\" ) ; if ( quirks & NO_DATA_INTERFACE ) data_interface = usb_ifnum_to_if ( usb_dev , 0 ) ; else data_interface = usb_ifnum_to_if ( usb_dev , ( data_interface_num = call_interface_num ) ) ; control_interface = intf ; } else { if ( intf -> cur_altsetting -> desc . bNumEndpoints != 3 ) { dev_dbg ( & intf -> dev , \"No<S2SV_blank>union<S2SV_blank>descriptor,<S2SV_blank>giving<S2SV_blank>up\\\\n\" ) ; return - ENODEV ; } else { dev_warn ( & intf -> dev , \"No<S2SV_blank>union<S2SV_blank>descriptor,<S2SV_blank>testing<S2SV_blank>for<S2SV_blank>castrated<S2SV_blank>device\\\\n\" ) ; combined_interfaces = 1 ; control_interface = data_interface = intf ; goto look_for_collapsed_interface ; } } } else { control_interface = usb_ifnum_to_if ( usb_dev , union_header -> bMasterInterface0 ) ; data_interface = usb_ifnum_to_if ( usb_dev , ( data_interface_num = union_header -> bSlaveInterface0 ) ) ; } if ( ! control_interface || ! data_interface ) { dev_dbg ( & intf -> dev , \"no<S2SV_blank>interfaces\\\\n\" ) ; return - ENODEV ; } if ( data_interface_num != call_interface_num ) dev_dbg ( & intf -> dev , \"Separate<S2SV_blank>call<S2SV_blank>control<S2SV_blank>interface.<S2SV_blank>That<S2SV_blank>is<S2SV_blank>not<S2SV_blank>fully<S2SV_blank>supported.\\\\n\" ) ; if ( control_interface == data_interface ) { dev_warn ( & intf -> dev , \"Control<S2SV_blank>and<S2SV_blank>data<S2SV_blank>interfaces<S2SV_blank>are<S2SV_blank>not<S2SV_blank>separated!\\\\n\" ) ; combined_interfaces = 1 ; quirks |= NO_CAP_LINE ; if ( data_interface -> cur_altsetting -> desc . bNumEndpoints != 3 ) { dev_err ( & intf -> dev , \"This<S2SV_blank>needs<S2SV_blank>exactly<S2SV_blank>3<S2SV_blank>endpoints\\\\n\" ) ; return - EINVAL ; } look_for_collapsed_interface : for ( i = 0 ; i < 3 ; i ++ ) { struct usb_endpoint_descriptor * ep ; ep = & data_interface -> cur_altsetting -> endpoint [ i ] . desc ; if ( usb_endpoint_is_int_in ( ep ) ) epctrl = ep ; else if ( usb_endpoint_is_bulk_out ( ep ) ) epwrite = ep ; else if ( usb_endpoint_is_bulk_in ( ep ) ) epread = ep ; else return - EINVAL ; } if ( ! epctrl || ! epread || ! epwrite ) return - ENODEV ; else goto made_compressed_probe ; } skip_normal_probe : if ( data_interface -> cur_altsetting -> desc . bInterfaceClass != CDC_DATA_INTERFACE_TYPE ) { if ( control_interface -> cur_altsetting -> desc . bInterfaceClass == CDC_DATA_INTERFACE_TYPE ) { dev_dbg ( & intf -> dev , \"Your<S2SV_blank>device<S2SV_blank>has<S2SV_blank>switched<S2SV_blank>interfaces.\\\\n\" ) ; swap ( control_interface , data_interface ) ; } else { return - EINVAL ; } } if ( ! combined_interfaces && intf != control_interface ) return - ENODEV ; if ( ! combined_interfaces && usb_interface_claimed ( data_interface ) ) { dev_dbg ( & intf -> dev , \"The<S2SV_blank>data<S2SV_blank>interface<S2SV_blank>isn\\'t<S2SV_blank>available\\\\n\" ) ; return - EBUSY ; } if ( data_interface -> cur_altsetting -> desc . bNumEndpoints < 2 || control_interface -> cur_altsetting -> desc . bNumEndpoints == 0 ) return - EINVAL ; epctrl = & control_interface -> cur_altsetting -> endpoint [ 0 ] . desc ; epread = & data_interface -> cur_altsetting -> endpoint [ 0 ] . desc ; epwrite = & data_interface -> cur_altsetting -> endpoint [ 1 ] . desc ; if ( ! usb_endpoint_dir_in ( epread ) ) { dev_dbg ( & intf -> dev , \"The<S2SV_blank>data<S2SV_blank>interface<S2SV_blank>has<S2SV_blank>switched<S2SV_blank>endpoints\\\\n\" ) ; swap ( epread , epwrite ) ; } made_compressed_probe : dev_dbg ( & intf -> dev , \"interfaces<S2SV_blank>are<S2SV_blank>valid\\\\n\" ) ; acm = kzalloc ( sizeof ( struct acm ) , GFP_KERNEL ) ; if ( acm == NULL ) goto alloc_fail ; minor = acm_alloc_minor ( acm ) ; if ( minor < 0 ) { dev_err ( & intf -> dev , \"no<S2SV_blank>more<S2SV_blank>free<S2SV_blank>acm<S2SV_blank>devices\\\\n\" ) ; kfree ( acm ) ; return - ENODEV ; } ctrlsize = usb_endpoint_maxp ( epctrl ) ; readsize = usb_endpoint_maxp ( epread ) * ( quirks == SINGLE_RX_URB ? 1 : 2 ) ; acm -> combined_interfaces = combined_interfaces ; acm -> writesize = usb_endpoint_maxp ( epwrite ) * 20 ; acm -> control = control_interface ; acm -> data = data_interface ; acm -> minor = minor ; acm -> dev = usb_dev ; acm -> ctrl_caps = ac_management_function ; if ( quirks & NO_CAP_LINE ) acm -> ctrl_caps &= ~ USB_CDC_CAP_LINE ; acm -> ctrlsize = ctrlsize ; acm -> readsize = readsize ; acm -> rx_buflimit = num_rx_buf ; INIT_WORK ( & acm -> work , acm_softint ) ; init_waitqueue_head ( & acm -> wioctl ) ; spin_lock_init ( & acm -> write_lock ) ; spin_lock_init ( & acm -> read_lock ) ; mutex_init ( & acm -> mutex ) ; acm -> rx_endpoint = usb_rcvbulkpipe ( usb_dev , epread -> bEndpointAddress ) ; acm -> is_int_ep = usb_endpoint_xfer_int ( epread ) ; if ( acm -> is_int_ep ) acm -> bInterval = epread -> bInterval ; tty_port_init ( & acm -> port ) ; acm -> port . ops = & acm_port_ops ; init_usb_anchor ( & acm -> delayed ) ; acm -> quirks = quirks ; buf = usb_alloc_coherent ( usb_dev , ctrlsize , GFP_KERNEL , & acm -> ctrl_dma ) ; if ( ! buf ) goto alloc_fail2 ; acm -> ctrl_buffer = buf ; if ( acm_write_buffers_alloc ( acm ) < 0 ) goto alloc_fail4 ; acm -> ctrlurb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! acm -> ctrlurb ) goto alloc_fail5 ; for ( i = 0 ; i < num_rx_buf ; i ++ ) { struct acm_rb * rb = & ( acm -> read_buffers [ i ] ) ; struct urb * urb ; rb -> base = usb_alloc_coherent ( acm -> dev , readsize , GFP_KERNEL , & rb -> dma ) ; if ( ! rb -> base ) goto alloc_fail6 ; rb -> index = i ; rb -> instance = acm ; urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! urb ) goto alloc_fail6 ; urb -> transfer_flags |= URB_NO_TRANSFER_DMA_MAP ; urb -> transfer_dma = rb -> dma ; if ( acm -> is_int_ep ) { usb_fill_int_urb ( urb , acm -> dev , acm -> rx_endpoint , rb -> base , acm -> readsize , acm_read_bulk_callback , rb , acm -> bInterval ) ; } else { usb_fill_bulk_urb ( urb , acm -> dev , acm -> rx_endpoint , rb -> base , acm -> readsize , acm_read_bulk_callback , rb ) ; } acm -> read_urbs [ i ] = urb ; __set_bit ( i , & acm -> read_urbs_free ) ; } for ( i = 0 ; i < ACM_NW ; i ++ ) { struct acm_wb * snd = & ( acm -> wb [ i ] ) ; snd -> urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( snd -> urb == NULL ) goto alloc_fail7 ; if ( usb_endpoint_xfer_int ( epwrite ) ) usb_fill_int_urb ( snd -> urb , usb_dev , usb_sndintpipe ( usb_dev , epwrite -> bEndpointAddress ) , NULL , acm -> writesize , acm_write_bulk , snd , epwrite -> bInterval ) ; else usb_fill_bulk_urb ( snd -> urb , usb_dev , usb_sndbulkpipe ( usb_dev , epwrite -> bEndpointAddress ) , NULL , acm -> writesize , acm_write_bulk , snd ) ; snd -> urb -> transfer_flags |= URB_NO_TRANSFER_DMA_MAP ; if ( quirks & SEND_ZERO_PACKET ) snd -> urb -> transfer_flags |= URB_ZERO_PACKET ; snd -> instance = acm ; } usb_set_intfdata ( intf , acm ) ; i = device_create_file ( & intf -> dev , & dev_attr_bmCapabilities ) ; if ( i < 0 ) goto alloc_fail7 ; if ( cfd ) { acm -> country_codes = kmalloc ( cfd -> bLength - 4 , GFP_KERNEL ) ; if ( ! acm -> country_codes ) goto skip_countries ; acm -> country_code_size = cfd -> bLength - 4 ; memcpy ( acm -> country_codes , ( u8 * ) & cfd -> wCountyCode0 , cfd -> bLength - 4 ) ; acm -> country_rel_date = cfd -> iCountryCodeRelDate ; i = device_create_file ( & intf -> dev , & dev_attr_wCountryCodes ) ; if ( i < 0 ) { kfree ( acm -> country_codes ) ; acm -> country_codes = NULL ; acm -> country_code_size = 0 ; goto skip_countries ; } i = device_create_file ( & intf -> dev , & dev_attr_iCountryCodeRelDate ) ; if ( i < 0 ) { device_remove_file ( & intf -> dev , & dev_attr_wCountryCodes ) ; kfree ( acm -> country_codes ) ; acm -> country_codes = NULL ; acm -> country_code_size = 0 ; goto skip_countries ; } } skip_countries : usb_fill_int_urb ( acm -> ctrlurb , usb_dev , usb_rcvintpipe ( usb_dev , epctrl -> bEndpointAddress ) , acm -> ctrl_buffer , ctrlsize , acm_ctrl_irq , acm , epctrl -> bInterval ? epctrl -> bInterval : 16 ) ; acm -> ctrlurb -> transfer_flags |= URB_NO_TRANSFER_DMA_MAP ; acm -> ctrlurb -> transfer_dma = acm -> ctrl_dma ; dev_info ( & intf -> dev , \"ttyACM%d:<S2SV_blank>USB<S2SV_blank>ACM<S2SV_blank>device\\\\n\" , minor ) ; acm -> line . dwDTERate = cpu_to_le32 ( 9600 ) ; acm -> line . bDataBits = 8 ; acm_set_line ( acm , & acm -> line ) ; usb_driver_claim_interface ( & acm_driver , data_interface , acm ) ; usb_set_intfdata ( data_interface , acm ) ; usb_get_intf ( control_interface ) ; tty_dev = tty_port_register_device ( & acm -> port , acm_tty_driver , minor , & control_interface -> dev ) ; if ( IS_ERR ( tty_dev ) ) { rv = PTR_ERR ( tty_dev ) ; goto alloc_fail8 ; } if ( quirks & CLEAR_HALT_CONDITIONS ) { usb_clear_halt ( usb_dev , usb_rcvbulkpipe ( usb_dev , epread -> bEndpointAddress ) ) ; usb_clear_halt ( usb_dev , usb_sndbulkpipe ( usb_dev , epwrite -> bEndpointAddress ) ) ; } return 0 ; alloc_fail8 : if ( acm -> country_codes ) { device_remove_file ( & acm -> control -> dev , & dev_attr_wCountryCodes ) ; device_remove_file ( & acm -> control -> dev , & dev_attr_iCountryCodeRelDate ) ; kfree ( acm -> country_codes ) ; } device_remove_file ( & acm -> control -> dev , & dev_attr_bmCapabilities ) ; alloc_fail7 : usb_set_intfdata ( intf , NULL ) ; for ( i = 0 ; i < ACM_NW ; i ++ ) usb_free_urb ( acm -> wb [ i ] . urb ) ; alloc_fail6 : for ( i = 0 ; i < num_rx_buf ; i ++ ) usb_free_urb ( acm -> read_urbs [ i ] ) ; acm_read_buffers_free ( acm ) ; usb_free_urb ( acm -> ctrlurb ) ; alloc_fail5 : acm_write_buffers_free ( acm ) ; alloc_fail4 : usb_free_coherent ( usb_dev , ctrlsize , acm -> ctrl_buffer , acm -> ctrl_dma ) ; alloc_fail2 : acm_release_minor ( acm ) ; kfree ( acm ) ; alloc_fail : return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 0 ) ; if ( ! data_interface || ! control_interface ) return - ENODEV\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0238\n\n```\nCWE-119 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { size_t ofs = CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ; q = ( const uint8_t * ) ( const void * ) ( ( const char * ) ( const void * ) p + ofs - 2 * sizeof ( uint32_t ) ) ; if ( q > e ) { DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; DPRINTF ( ( \"%\" SIZE_T_FORMAT \"u)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=0x%tx,0x%x\\\\n\" , i , inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , offs ) ) ; if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; <S2SV_StartBug> o = 2 ; <S2SV_EndBug> } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_FLOAT : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; u32 = CDF_TOLE4 ( u32 ) ; memcpy ( & inp [ i ] . pi_f , & u32 , sizeof ( inp [ i ] . pi_f ) ) ; break ; case CDF_DOUBLE : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; memcpy ( & inp [ i ] . pi_d , & u64 , sizeof ( inp [ i ] . pi_d ) ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , nelements ) ) ; <S2SV_StartBug> for ( j = 0 ; j < nelements ; j ++ , i ++ ) { <S2SV_EndBug> uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; if ( l & 1 ) l ++ ; o += l >> 1 ; if ( q + o >= e ) goto out ; o4 = o * sizeof ( uint32_t ) ; } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; break ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( nelements == 0 ) { DPRINTF ( ( \"CDF_VECTOR<S2SV_blank>with<S2SV_blank>nelements<S2SV_blank>==<S2SV_blank>0\\\\n\" ) ) ; goto out ; } <S2SV_ModStart> j < nelements && i < sh . sh_properties ; <S2SV_ModEnd> j ++ ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13050\n\n```\nCWE-125 <S2SV_StartBug> static int <S2SV_EndBug> <S2SV_StartBug> rpki_rtr_pdu_print ( netdissect_options * ndo , const u_char * tptr , u_int indent ) <S2SV_EndBug> { const rpki_rtr_pdu * pdu_header ; u_int pdu_type , pdu_len , hexdump ; const u_char * msg ; <S2SV_StartBug> pdu_header = ( const rpki_rtr_pdu * ) tptr ; <S2SV_EndBug> pdu_type = pdu_header -> pdu_type ; pdu_len = EXTRACT_32BITS ( pdu_header -> length ) ; <S2SV_StartBug> ND_TCHECK2 ( * tptr , pdu_len ) ; <S2SV_EndBug> hexdump = FALSE ; ND_PRINT ( ( ndo , \"%sRPKI-RTRv%u,<S2SV_blank>%s<S2SV_blank>PDU<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , indent_string ( 8 ) , pdu_header -> version , tok2str ( rpki_rtr_pdu_values , \"Unknown\" , pdu_type ) , <S2SV_StartBug> pdu_type , pdu_len ) ) ; <S2SV_EndBug> switch ( pdu_type ) { case RPKI_RTR_SERIAL_NOTIFY_PDU : case RPKI_RTR_SERIAL_QUERY_PDU : <S2SV_StartBug> case RPKI_RTR_END_OF_DATA_PDU : <S2SV_EndBug> msg = ( const u_char * ) ( pdu_header + 1 ) ; ND_PRINT ( ( ndo , \"%sSession<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Serial:<S2SV_blank>%u\" , indent_string ( indent + 2 ) , EXTRACT_16BITS ( pdu_header -> u . session_id ) , EXTRACT_32BITS ( msg ) ) ) ; break ; case RPKI_RTR_RESET_QUERY_PDU : case RPKI_RTR_CACHE_RESET_PDU : <S2SV_StartBug> break ; <S2SV_EndBug> <S2SV_StartBug> case RPKI_RTR_CACHE_RESPONSE_PDU : <S2SV_EndBug> ND_PRINT ( ( ndo , \"%sSession<S2SV_blank>ID:<S2SV_blank>0x%04x\" , indent_string ( indent + 2 ) , EXTRACT_16BITS ( pdu_header -> u . session_id ) ) ) ; break ; case RPKI_RTR_IPV4_PREFIX_PDU : { const rpki_rtr_pdu_ipv4_prefix * pdu ; <S2SV_StartBug> pdu = ( const rpki_rtr_pdu_ipv4_prefix * ) tptr ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"%sIPv4<S2SV_blank>Prefix<S2SV_blank>%s/%u-%u,<S2SV_blank>origin-as<S2SV_blank>%u,<S2SV_blank>flags<S2SV_blank>0x%02x\" , indent_string ( indent + 2 ) , ipaddr_string ( ndo , pdu -> prefix ) , pdu -> prefix_length , pdu -> max_length , EXTRACT_32BITS ( pdu -> as ) , pdu -> flags ) ) ; } break ; case RPKI_RTR_IPV6_PREFIX_PDU : { const rpki_rtr_pdu_ipv6_prefix * pdu ; <S2SV_StartBug> pdu = ( const rpki_rtr_pdu_ipv6_prefix * ) tptr ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"%sIPv6<S2SV_blank>Prefix<S2SV_blank>%s/%u-%u,<S2SV_blank>origin-as<S2SV_blank>%u,<S2SV_blank>flags<S2SV_blank>0x%02x\" , indent_string ( indent + 2 ) , ip6addr_string ( ndo , pdu -> prefix ) , pdu -> prefix_length , pdu -> max_length , EXTRACT_32BITS ( pdu -> as ) , pdu -> flags ) ) ; } break ; case RPKI_RTR_ERROR_REPORT_PDU : { const rpki_rtr_pdu_error_report * pdu ; u_int encapsulated_pdu_length , text_length , tlen , error_code ; <S2SV_StartBug> pdu = ( const rpki_rtr_pdu_error_report * ) tptr ; <S2SV_EndBug> encapsulated_pdu_length = EXTRACT_32BITS ( pdu -> encapsulated_pdu_length ) ; <S2SV_StartBug> ND_TCHECK2 ( * tptr , encapsulated_pdu_length ) ; <S2SV_EndBug> tlen = pdu_len ; error_code = EXTRACT_16BITS ( pdu -> pdu_header . u . error_code ) ; ND_PRINT ( ( ndo , \"%sError<S2SV_blank>code:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Encapsulated<S2SV_blank>PDU<S2SV_blank>length:<S2SV_blank>%u\" , indent_string ( indent + 2 ) , tok2str ( rpki_rtr_error_codes , \"Unknown\" , error_code ) , error_code , encapsulated_pdu_length ) ) ; <S2SV_StartBug> tptr += sizeof ( * pdu ) ; <S2SV_EndBug> tlen -= sizeof ( * pdu ) ; <S2SV_StartBug> if ( encapsulated_pdu_length && <S2SV_EndBug> ( encapsulated_pdu_length <= tlen ) ) { ND_PRINT ( ( ndo , \"%s-----encapsulated<S2SV_blank>PDU-----\" , indent_string ( indent + 4 ) ) ) ; <S2SV_StartBug> if ( rpki_rtr_pdu_print ( ndo , tptr , indent + 2 ) ) <S2SV_EndBug> goto trunc ; } tptr += encapsulated_pdu_length ; <S2SV_StartBug> tlen -= encapsulated_pdu_length ; <S2SV_EndBug> <S2SV_StartBug> text_length = 0 ; <S2SV_EndBug> if ( tlen > 4 ) { <S2SV_StartBug> text_length = EXTRACT_32BITS ( tptr ) ; <S2SV_EndBug> tptr += 4 ; <S2SV_StartBug> tlen -= 4 ; <S2SV_EndBug> } <S2SV_StartBug> ND_TCHECK2 ( * tptr , text_length ) ; <S2SV_EndBug> if ( text_length && ( text_length <= tlen ) ) { ND_PRINT ( ( ndo , \"%sError<S2SV_blank>text:<S2SV_blank>\" , indent_string ( indent + 2 ) ) ) ; if ( fn_printn ( ndo , tptr , text_length , ndo -> ndo_snapend ) ) goto trunc ; } } break ; default : hexdump = TRUE ; } if ( ndo -> ndo_vflag > 1 || ( ndo -> ndo_vflag && hexdump ) ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , pdu_len ) ; } <S2SV_StartBug> return 0 ; <S2SV_EndBug> trunc : <S2SV_StartBug> return 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static u_int <S2SV_ModEnd> rpki_rtr_pdu_print ( netdissect_options <S2SV_ModStart> * tptr , const u_int len , const u_char recurse , const <S2SV_ModStart> * msg ; ND_TCHECK_8BITS ( tptr ) ; if ( * tptr != 0 ) { ND_PRINT ( ( ndo , \"%sRPKI-RTRv%u<S2SV_blank>(unknown)\" , indent_string ( 8 ) , * tptr ) ) ; return len ; } if ( len < sizeof ( rpki_rtr_pdu ) ) { ND_PRINT ( ( ndo , \"(%u<S2SV_blank>bytes<S2SV_blank>is<S2SV_blank>too<S2SV_blank>few<S2SV_blank>to<S2SV_blank>decode)\" , len ) ) ; goto invalid ; } ND_TCHECK2 ( * tptr , sizeof ( rpki_rtr_pdu ) ) ; <S2SV_ModStart> length ) ; <S2SV_ModEnd> hexdump = FALSE <S2SV_ModStart> pdu_len ) ) ; if ( pdu_len < sizeof ( rpki_rtr_pdu ) || pdu_len > len ) goto invalid <S2SV_ModStart> case RPKI_RTR_END_OF_DATA_PDU : if ( pdu_len != sizeof ( rpki_rtr_pdu ) + 4 ) goto invalid ; ND_TCHECK2 ( * tptr , pdu_len ) ; <S2SV_ModStart> case RPKI_RTR_CACHE_RESET_PDU : if ( pdu_len != sizeof ( rpki_rtr_pdu ) ) goto invalid ; <S2SV_ModStart> case RPKI_RTR_CACHE_RESPONSE_PDU : if ( pdu_len != sizeof ( rpki_rtr_pdu ) ) goto invalid ; <S2SV_ModStart> * pdu ; if ( pdu_len != sizeof ( rpki_rtr_pdu ) + 12 ) goto invalid ; ND_TCHECK2 ( * tptr , pdu_len ) ; <S2SV_ModStart> * pdu ; if ( pdu_len != sizeof ( rpki_rtr_pdu ) + 24 ) goto invalid ; ND_TCHECK2 ( * tptr , pdu_len ) ; <S2SV_ModStart> , error_code ; tlen = sizeof ( rpki_rtr_pdu ) ; if ( pdu_len < tlen + 4 ) goto invalid ; ND_TCHECK2 ( * tptr , tlen + 4 ) ; <S2SV_ModStart> encapsulated_pdu_length ) ; tlen += 4 <S2SV_ModEnd> ; error_code = <S2SV_ModStart> ) ) ; <S2SV_ModEnd> if ( encapsulated_pdu_length <S2SV_ModStart> if ( encapsulated_pdu_length ) { if ( pdu_len < tlen + encapsulated_pdu_length ) goto invalid ; if ( ! recurse ) { ND_TCHECK2 ( * tptr , tlen + encapsulated_pdu_length ) ; } else <S2SV_ModEnd> { ND_PRINT ( <S2SV_ModStart> ) ) ; <S2SV_ModEnd> rpki_rtr_pdu_print ( ndo <S2SV_ModStart> ndo , tptr + tlen , encapsulated_pdu_length , 0 <S2SV_ModStart> + 2 ) ; } tlen <S2SV_ModEnd> += encapsulated_pdu_length ; <S2SV_ModStart> += encapsulated_pdu_length ; } if ( pdu_len < tlen + 4 ) goto invalid ; ND_TCHECK2 ( * tptr , tlen + 4 ) <S2SV_ModEnd> ; text_length = <S2SV_ModStart> ; text_length = <S2SV_ModEnd> EXTRACT_32BITS ( tptr <S2SV_ModStart> EXTRACT_32BITS ( tptr + tlen ) ; tlen <S2SV_ModEnd> += 4 ; <S2SV_ModStart> += 4 ; if ( text_length ) { if ( pdu_len < tlen + text_length ) goto invalid ; ND_PRINT ( ( ndo , \"%sError<S2SV_blank>text:<S2SV_blank>\" , indent_string ( indent + 2 ) ) ) ; if ( fn_printn ( ndo , tptr + tlen , text_length , ndo -> ndo_snapend ) ) goto trunc ; } } break ; default : <S2SV_ModEnd> ND_TCHECK2 ( * <S2SV_ModStart> * tptr , pdu_len ) ; <S2SV_ModEnd> hexdump = TRUE <S2SV_ModStart> ; } return pdu_len ; invalid : ND_PRINT ( ( ndo , \"%s\" , istr ) ) ; ND_TCHECK2 ( * tptr , len ) ; return len <S2SV_ModEnd> ; trunc : <S2SV_ModStart> ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t%s\" , tstr ) ) ; return len <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 static int jpc_pi_nextrpcl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; int compno ; jpc_picomp_t * picomp ; int xstep ; int ystep ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; uint_fast32_t trx0 ; uint_fast32_t try0 ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> xstep = 0 ; pi -> ystep = 0 ; for ( compno = 0 , picomp = pi -> picomps ; compno < pi -> numcomps ; ++ compno , ++ picomp ) { for ( rlvlno = 0 , pirlvl = picomp -> pirlvls ; rlvlno < picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { <S2SV_StartBug> xstep = picomp -> hsamp * ( 1 << ( pirlvl -> prcwidthexpn + <S2SV_EndBug> picomp -> numrlvls - rlvlno - 1 ) ) ; <S2SV_StartBug> ystep = picomp -> vsamp * ( 1 << ( pirlvl -> prcheightexpn + <S2SV_EndBug> picomp -> numrlvls - rlvlno - 1 ) ) ; pi -> xstep = ( ! pi -> xstep ) ? xstep : JAS_MIN ( pi -> xstep , xstep ) ; pi -> ystep = ( ! pi -> ystep ) ? ystep : JAS_MIN ( pi -> ystep , ystep ) ; } } pi -> prgvolfirst = 0 ; } for ( pi -> rlvlno = pchg -> rlvlnostart ; pi -> rlvlno < pchg -> rlvlnoend && pi -> rlvlno < pi -> maxrlvls ; ++ pi -> rlvlno ) { for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < JAS_CAST ( int , pchg -> compnoend ) && pi -> compno < pi -> numcomps ; ++ pi -> compno , ++ pi -> picomp ) { if ( pi -> rlvlno >= pi -> picomp -> numrlvls ) { continue ; } pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; <S2SV_StartBug> if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( 1 << rpx ) ) ) <S2SV_EndBug> <S2SV_StartBug> || ! ( pi -> x % ( 1 << rpx ) ) ) && <S2SV_EndBug> <S2SV_StartBug> ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( 1 << rpy ) ) ) <S2SV_EndBug> <S2SV_StartBug> || ! ( pi -> y % ( 1 << rpy ) ) ) ) { <S2SV_EndBug> prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pirlvl ) { if ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 || pirlvl -> prcheightexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 ) { return - 1 ; } <S2SV_ModStart> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpx ) <S2SV_ModStart> x % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpx ) <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpy ) <S2SV_ModStart> y % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpy )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15173\n\n```\nCWE-119 void l2tp_packet_print ( const struct l2tp_packet_t * pack , void ( * print ) ( const char * fmt , ... ) ) { const struct l2tp_attr_t * attr ; const struct l2tp_dict_value_t * val ; <S2SV_StartBug> if ( pack -> hdr . ver == 2 ) { <S2SV_EndBug> print ( \"[L2TP<S2SV_blank>tid=%u<S2SV_blank>sid=%u\" , ntohs ( pack -> hdr . tid ) , ntohs ( pack -> hdr . sid ) ) ; log_ppp_debug ( \"<S2SV_blank>Ns=%u<S2SV_blank>Nr=%u\" , ntohs ( pack -> hdr . Ns ) , ntohs ( pack -> hdr . Nr ) ) ; <S2SV_StartBug> } else { <S2SV_EndBug> print ( \"[L2TP<S2SV_blank>cid=%u\" , pack -> hdr . cid ) ; <S2SV_StartBug> log_ppp_debug ( \"<S2SV_blank>Ns=%u<S2SV_blank>Nr=%u\" , ntohs ( pack -> hdr . Ns ) , ntohs ( pack -> hdr . Nr ) ) ; <S2SV_EndBug> } list_for_each_entry ( attr , & pack -> attrs , entry ) { print ( \"<S2SV_blank><%s\" , attr -> attr -> name ) ; val = l2tp_dict_find_value ( attr -> attr , attr -> val ) ; if ( val ) print ( \"<S2SV_blank>%s\" , val -> name ) ; else if ( attr -> H ) print ( \"<S2SV_blank>(hidden,<S2SV_blank>%hu<S2SV_blank>bytes)\" , attr -> length ) ; else { switch ( attr -> attr -> type ) { case ATTR_TYPE_INT16 : print ( \"<S2SV_blank>%i\" , attr -> val . int16 ) ; break ; case ATTR_TYPE_INT32 : print ( \"<S2SV_blank>%i\" , attr -> val . int32 ) ; break ; case ATTR_TYPE_STRING : print ( \"<S2SV_blank>%s\" , attr -> val . string ) ; break ; } } print ( \">\" ) ; } print ( \"]\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * val ; switch ( pack -> hdr . flags & L2TP_VER_MASK ) { case 2 : <S2SV_ModEnd> print ( \"[L2TP<S2SV_blank>tid=%u<S2SV_blank>sid=%u\" <S2SV_ModStart> ) ) ; break ; case 3 : <S2SV_ModEnd> print ( \"[L2TP<S2SV_blank>cid=%u\" <S2SV_ModStart> Nr ) ) ; break ; default : print ( \"[L2TP<S2SV_blank>unknown<S2SV_blank>version]\\\\n\" ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5354\n\n```\nCWE-000 krb5_error_code krb5_ldap_put_principal ( krb5_context context , krb5_db_entry * entry , char * * db_args ) { int l = 0 , kerberos_principal_object_type = 0 ; unsigned int ntrees = 0 , tre = 0 ; krb5_error_code st = 0 , tempst = 0 ; LDAP * ld = NULL ; LDAPMessage * result = NULL , * ent = NULL ; char * * subtreelist = NULL ; char * user = NULL , * subtree = NULL , * principal_dn = NULL ; char * * values = NULL , * strval [ 10 ] = { NULL } , errbuf [ 1024 ] ; char * filtuser = NULL ; struct berval * * bersecretkey = NULL ; LDAPMod * * mods = NULL ; krb5_boolean create_standalone_prinicipal = FALSE ; krb5_boolean krb_identity_exists = FALSE , establish_links = FALSE ; char * standalone_principal_dn = NULL ; krb5_tl_data * tl_data = NULL ; krb5_key_data * * keys = NULL ; kdb5_dal_handle * dal_handle = NULL ; krb5_ldap_context * ldap_context = NULL ; krb5_ldap_server_handle * ldap_server_handle = NULL ; osa_princ_ent_rec princ_ent = { 0 } ; xargs_t xargs = { 0 } ; char * polname = NULL ; OPERATION optype ; krb5_boolean found_entry = FALSE ; krb5_clear_error_message ( context ) ; SETUP_CONTEXT ( ) ; if ( ldap_context -> lrparams == NULL || ldap_context -> container_dn == NULL ) return EINVAL ; GET_HANDLE ( ) ; if ( ! is_principal_in_realm ( ldap_context , entry -> princ ) ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"Principal<S2SV_blank>does<S2SV_blank>not<S2SV_blank>belong<S2SV_blank>to<S2SV_blank>the<S2SV_blank>default<S2SV_blank>realm\" ) ) ; goto cleanup ; } if ( ( ( st = krb5_unparse_name ( context , entry -> princ , & user ) ) != 0 ) || ( ( st = krb5_ldap_unparse_principal_name ( user ) ) != 0 ) ) goto cleanup ; filtuser = ldap_filter_correct ( user ) ; if ( filtuser == NULL ) { st = ENOMEM ; goto cleanup ; } if ( entry -> mask & KADM5_PRINCIPAL ) optype = ADD_PRINCIPAL ; else optype = MODIFY_PRINCIPAL ; if ( ( ( st = krb5_get_princ_type ( context , entry , & kerberos_principal_object_type ) ) != 0 ) || ( ( st = krb5_get_userdn ( context , entry , & principal_dn ) ) != 0 ) ) goto cleanup ; if ( ( st = process_db_args ( context , db_args , & xargs , optype ) ) != 0 ) goto cleanup ; if ( entry -> mask & KADM5_LOAD ) { unsigned int tree = 0 ; int numlentries = 0 ; char * filter = NULL ; if ( asprintf ( & filter , FILTER \"%s))\" , filtuser ) < 0 ) { filter = NULL ; st = ENOMEM ; goto cleanup ; } if ( ( st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ) != 0 ) goto cleanup ; found_entry = FALSE ; for ( tree = 0 ; found_entry == FALSE && tree < ntrees ; ++ tree ) { if ( principal_dn == NULL ) { LDAP_SEARCH_1 ( subtreelist [ tree ] , ldap_context -> lrparams -> search_scope , filter , principal_attributes , IGNORE_STATUS ) ; } else { LDAP_SEARCH_1 ( principal_dn , LDAP_SCOPE_BASE , filter , principal_attributes , IGNORE_STATUS ) ; } if ( st == LDAP_SUCCESS ) { numlentries = ldap_count_entries ( ld , result ) ; if ( numlentries > 1 ) { free ( filter ) ; st = EINVAL ; k5_setmsg ( context , st , _ ( \"operation<S2SV_blank>can<S2SV_blank>not<S2SV_blank>continue,<S2SV_blank>more<S2SV_blank>than<S2SV_blank>one<S2SV_blank>\" \"entry<S2SV_blank>with<S2SV_blank>principal<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>found\" ) , user ) ; goto cleanup ; } else if ( numlentries == 1 ) { found_entry = TRUE ; if ( principal_dn == NULL ) { ent = ldap_first_entry ( ld , result ) ; if ( ent != NULL ) { if ( ( principal_dn = ldap_get_dn ( ld , ent ) ) == NULL ) { ldap_get_option ( ld , LDAP_OPT_RESULT_CODE , & st ) ; st = set_ldap_error ( context , st , 0 ) ; free ( filter ) ; goto cleanup ; } } } } } else if ( st != LDAP_NO_SUCH_OBJECT ) { st = set_ldap_error ( context , st , 0 ) ; free ( filter ) ; goto cleanup ; } ldap_msgfree ( result ) ; result = NULL ; } free ( filter ) ; if ( found_entry == FALSE && principal_dn != NULL ) { create_standalone_prinicipal = TRUE ; standalone_principal_dn = strdup ( principal_dn ) ; CHECK_NULL ( standalone_principal_dn ) ; } } if ( principal_dn == NULL && xargs . dn == NULL ) { if ( entry -> princ -> length == 2 && entry -> princ -> data [ 0 ] . length == strlen ( \"krbtgt\" ) && strncmp ( entry -> princ -> data [ 0 ] . data , \"krbtgt\" , entry -> princ -> data [ 0 ] . length ) == 0 ) { subtree = strdup ( ldap_context -> lrparams -> realmdn ) ; } else if ( xargs . containerdn ) { if ( ( st = checkattributevalue ( ld , xargs . containerdn , NULL , NULL , NULL ) ) != 0 ) { if ( st == KRB5_KDB_NOENTRY || st == KRB5_KDB_CONSTRAINT_VIOLATION ) { int ost = st ; st = EINVAL ; k5_prependmsg ( context , ost , st , _ ( \"\\'%s\\'<S2SV_blank>not<S2SV_blank>found\" ) , xargs . containerdn ) ; } goto cleanup ; } subtree = strdup ( xargs . containerdn ) ; } else if ( ldap_context -> lrparams -> containerref && strlen ( ldap_context -> lrparams -> containerref ) != 0 ) { subtree = strdup ( ldap_context -> lrparams -> containerref ) ; } else { subtree = strdup ( ldap_context -> lrparams -> realmdn ) ; } CHECK_NULL ( subtree ) ; if ( asprintf ( & standalone_principal_dn , \"krbprincipalname=%s,%s\" , filtuser , subtree ) < 0 ) standalone_principal_dn = NULL ; CHECK_NULL ( standalone_principal_dn ) ; create_standalone_prinicipal = TRUE ; free ( subtree ) ; subtree = NULL ; } if ( xargs . dn_from_kbd == TRUE ) { int dnlen = 0 , subtreelen = 0 ; char * dn = NULL ; krb5_boolean outofsubtree = TRUE ; if ( xargs . dn != NULL ) { dn = xargs . dn ; } else if ( xargs . linkdn != NULL ) { dn = xargs . linkdn ; } else if ( standalone_principal_dn != NULL ) { dn = standalone_principal_dn ; } if ( subtreelist == NULL ) { st = krb5_get_subtree_info ( ldap_context , & subtreelist , & ntrees ) ; if ( st ) goto cleanup ; } for ( tre = 0 ; tre < ntrees ; ++ tre ) { if ( subtreelist [ tre ] == NULL || strlen ( subtreelist [ tre ] ) == 0 ) { outofsubtree = FALSE ; break ; } else { dnlen = strlen ( dn ) ; subtreelen = strlen ( subtreelist [ tre ] ) ; if ( ( dnlen >= subtreelen ) && ( strcasecmp ( ( dn + dnlen - subtreelen ) , subtreelist [ tre ] ) == 0 ) ) { outofsubtree = FALSE ; break ; } } } if ( outofsubtree == TRUE ) { st = EINVAL ; k5_setmsg ( context , st , _ ( \"DN<S2SV_blank>is<S2SV_blank>out<S2SV_blank>of<S2SV_blank>the<S2SV_blank>realm<S2SV_blank>subtree\" ) ) ; goto cleanup ; } if ( standalone_principal_dn == NULL ) { char * attributes [ ] = { \"krbticketpolicyreference\" , \"krbprincipalname\" , NULL } ; ldap_msgfree ( result ) ; result = NULL ; LDAP_SEARCH_1 ( dn , LDAP_SCOPE_BASE , 0 , attributes , IGNORE_STATUS ) ; if ( st == LDAP_SUCCESS ) { ent = ldap_first_entry ( ld , result ) ; if ( ent != NULL ) { if ( ( values = ldap_get_values ( ld , ent , \"krbticketpolicyreference\" ) ) != NULL ) { ldap_value_free ( values ) ; } if ( ( values = ldap_get_values ( ld , ent , \"krbprincipalname\" ) ) != NULL ) { krb_identity_exists = TRUE ; ldap_value_free ( values ) ; } } } else { st = set_ldap_error ( context , st , OP_SEARCH ) ; goto cleanup ; } } } if ( xargs . dn != NULL && krb_identity_exists == TRUE ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"ldap<S2SV_blank>object<S2SV_blank>is<S2SV_blank>already<S2SV_blank>kerberized\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( xargs . linkdn != NULL ) { if ( optype == MODIFY_PRINCIPAL && kerberos_principal_object_type != KDB_STANDALONE_PRINCIPAL_OBJECT ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"link<S2SV_blank>information<S2SV_blank>can<S2SV_blank>not<S2SV_blank>be<S2SV_blank>set/updated<S2SV_blank>as<S2SV_blank>the<S2SV_blank>\" \"kerberos<S2SV_blank>principal<S2SV_blank>belongs<S2SV_blank>to<S2SV_blank>an<S2SV_blank>ldap<S2SV_blank>object\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } { char * * linkdns = NULL ; int j = 0 ; if ( ( st = krb5_get_linkdn ( context , entry , & linkdns ) ) != 0 ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Failed<S2SV_blank>getting<S2SV_blank>object<S2SV_blank>references\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( linkdns != NULL ) { st = EINVAL ; snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"kerberos<S2SV_blank>principal<S2SV_blank>is<S2SV_blank>already<S2SV_blank>linked<S2SV_blank>to<S2SV_blank>a<S2SV_blank>ldap<S2SV_blank>\" \"object\" ) ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; for ( j = 0 ; linkdns [ j ] != NULL ; ++ j ) free ( linkdns [ j ] ) ; free ( linkdns ) ; goto cleanup ; } } establish_links = TRUE ; } if ( entry -> mask & KADM5_LAST_SUCCESS ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> last_success ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastSuccessfulAuth\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_LAST_FAILED ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> last_failed ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastFailedAuth\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_FAIL_AUTH_COUNT ) { krb5_kvno fail_auth_count ; fail_auth_count = entry -> fail_auth_count ; if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) fail_auth_count ++ ; st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_REPLACE , fail_auth_count ) ; if ( st != 0 ) goto cleanup ; } else if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) { int attr_mask = 0 ; krb5_boolean has_fail_count ; st = krb5_get_attributes_mask ( context , entry , & attr_mask ) ; if ( st != 0 ) goto cleanup ; has_fail_count = ( ( attr_mask & KDB_FAIL_AUTH_COUNT_ATTR ) != 0 ) ; # ifdef LDAP_MOD_INCREMENT if ( ldap_server_handle -> server_info -> modify_increment && has_fail_count ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_INCREMENT , 1 ) ; if ( st != 0 ) goto cleanup ; } else { # endif if ( has_fail_count ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_DELETE , entry -> fail_auth_count ) ; if ( st != 0 ) goto cleanup ; } st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_ADD , entry -> fail_auth_count + 1 ) ; if ( st != 0 ) goto cleanup ; # ifdef LDAP_MOD_INCREMENT } # endif } else if ( optype == ADD_PRINCIPAL ) { st = krb5_add_int_mem_ldap_mod ( & mods , \"krbLoginFailedCount\" , LDAP_MOD_ADD , 0 ) ; } if ( entry -> mask & KADM5_MAX_LIFE ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbmaxticketlife\" , LDAP_MOD_REPLACE , entry -> max_life ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_MAX_RLIFE ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbmaxrenewableage\" , LDAP_MOD_REPLACE , entry -> max_renewable_life ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_ATTRIBUTES ) { if ( ( st = krb5_add_int_mem_ldap_mod ( & mods , \"krbticketflags\" , LDAP_MOD_REPLACE , entry -> attributes ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_PRINCIPAL ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = user ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbprincipalname\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_PRINC_EXPIRE_TIME ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbprincipalexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_PW_EXPIRATION ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> pw_expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpasswordexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } if ( entry -> mask & KADM5_POLICY ) { memset ( & princ_ent , 0 , sizeof ( princ_ent ) ) ; for ( tl_data = entry -> tl_data ; tl_data ; tl_data = tl_data -> tl_data_next ) { if ( tl_data -> tl_data_type == KRB5_TL_KADM_DATA ) { if ( ( st = krb5_lookup_tl_kadm_data ( tl_data , & princ_ent ) ) != 0 ) { goto cleanup ; } break ; } } if ( princ_ent . aux_attributes & KADM5_POLICY ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( st = krb5_ldap_name_to_policydn ( context , princ_ent . policy , & polname ) ) != 0 ) goto cleanup ; strval [ 0 ] = polname ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } else { st = EINVAL ; k5_setmsg ( context , st , \"Password<S2SV_blank>policy<S2SV_blank>value<S2SV_blank>null\" ) ; goto cleanup ; } } else if ( entry -> mask & KADM5_LOAD && found_entry == TRUE ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_REPLACE , NULL ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_POLICY_CLR ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpwdpolicyreference\" , LDAP_MOD_DELETE , NULL ) ) != 0 ) goto cleanup ; } if ( entry -> mask & KADM5_KEY_DATA || entry -> mask & KADM5_KVNO ) { krb5_kvno mkvno ; if ( ( st = krb5_dbe_lookup_mkvno ( context , entry , & mkvno ) ) != 0 ) goto cleanup ; bersecretkey = krb5_encode_krbsecretkey ( entry -> key_data , entry -> n_key_data , mkvno ) ; <S2SV_StartBug> if ( ( st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbprincipalkey\" , <S2SV_EndBug> <S2SV_StartBug> LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , bersecretkey ) ) != 0 ) <S2SV_EndBug> goto cleanup ; if ( ! ( entry -> mask & KADM5_PRINCIPAL ) ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( entry -> pw_expiration ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbpasswordexpiration\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } { krb5_timestamp last_pw_changed ; if ( ( st = krb5_dbe_lookup_last_pwd_change ( context , entry , & last_pw_changed ) ) != 0 ) goto cleanup ; memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( last_pw_changed ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastPwdChange\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } } if ( entry -> tl_data != NULL ) { int count = 0 ; struct berval * * ber_tl_data = NULL ; krb5_tl_data * ptr ; krb5_timestamp unlock_time ; for ( ptr = entry -> tl_data ; ptr != NULL ; ptr = ptr -> tl_data_next ) { if ( ptr -> tl_data_type == KRB5_TL_LAST_PWD_CHANGE # ifdef SECURID || ptr -> tl_data_type == KRB5_TL_DB_ARGS # endif || ptr -> tl_data_type == KRB5_TL_KADM_DATA || ptr -> tl_data_type == KDB_TL_USER_INFO || ptr -> tl_data_type == KRB5_TL_CONSTRAINED_DELEGATION_ACL || ptr -> tl_data_type == KRB5_TL_LAST_ADMIN_UNLOCK ) continue ; count ++ ; } if ( count != 0 ) { int j ; ber_tl_data = ( struct berval * * ) calloc ( count + 1 , sizeof ( struct berval * ) ) ; if ( ber_tl_data == NULL ) { st = ENOMEM ; goto cleanup ; } for ( j = 0 , ptr = entry -> tl_data ; ptr != NULL ; ptr = ptr -> tl_data_next ) { if ( ptr -> tl_data_type == KRB5_TL_LAST_PWD_CHANGE # ifdef SECURID || ptr -> tl_data_type == KRB5_TL_DB_ARGS # endif || ptr -> tl_data_type == KRB5_TL_KADM_DATA || ptr -> tl_data_type == KDB_TL_USER_INFO || ptr -> tl_data_type == KRB5_TL_CONSTRAINED_DELEGATION_ACL || ptr -> tl_data_type == KRB5_TL_LAST_ADMIN_UNLOCK ) continue ; if ( ( st = tl_data2berval ( ptr , & ber_tl_data [ j ] ) ) != 0 ) break ; j ++ ; } if ( st == 0 ) { ber_tl_data [ count ] = NULL ; st = krb5_add_ber_mem_ldap_mod ( & mods , \"krbExtraData\" , LDAP_MOD_REPLACE | LDAP_MOD_BVALUES , ber_tl_data ) ; } for ( j = 0 ; ber_tl_data [ j ] != NULL ; j ++ ) { free ( ber_tl_data [ j ] -> bv_val ) ; free ( ber_tl_data [ j ] ) ; } free ( ber_tl_data ) ; if ( st != 0 ) goto cleanup ; } if ( ( st = krb5_dbe_lookup_last_admin_unlock ( context , entry , & unlock_time ) ) != 0 ) goto cleanup ; if ( unlock_time != 0 ) { memset ( strval , 0 , sizeof ( strval ) ) ; if ( ( strval [ 0 ] = getstringtime ( unlock_time ) ) == NULL ) goto cleanup ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbLastAdminUnlock\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) { free ( strval [ 0 ] ) ; goto cleanup ; } free ( strval [ 0 ] ) ; } } if ( xargs . tktpolicydn != NULL ) { int tmask = 0 ; if ( strlen ( xargs . tktpolicydn ) != 0 ) { st = checkattributevalue ( ld , xargs . tktpolicydn , \"objectclass\" , policyclass , & tmask ) ; CHECK_CLASS_VALIDITY ( st , tmask , _ ( \"ticket<S2SV_blank>policy<S2SV_blank>object<S2SV_blank>value:<S2SV_blank>\" ) ) ; strval [ 0 ] = xargs . tktpolicydn ; strval [ 1 ] = NULL ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbticketpolicyreference\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } else { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbticketpolicyreference\" , LDAP_MOD_DELETE , NULL ) ) != 0 ) goto cleanup ; } } if ( establish_links == TRUE ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = xargs . linkdn ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"krbObjectReferences\" , LDAP_MOD_REPLACE , strval ) ) != 0 ) goto cleanup ; } if ( mods == NULL ) goto cleanup ; if ( create_standalone_prinicipal == TRUE ) { memset ( strval , 0 , sizeof ( strval ) ) ; strval [ 0 ] = \"krbprincipal\" ; strval [ 1 ] = \"krbprincipalaux\" ; strval [ 2 ] = \"krbTicketPolicyAux\" ; if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"objectclass\" , LDAP_MOD_ADD , strval ) ) != 0 ) goto cleanup ; st = ldap_add_ext_s ( ld , standalone_principal_dn , mods , NULL , NULL ) ; if ( st == LDAP_ALREADY_EXISTS && entry -> mask & KADM5_LOAD ) { st = ldap_delete_ext_s ( ld , standalone_principal_dn , NULL , NULL ) ; if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Principal<S2SV_blank>delete<S2SV_blank>failed<S2SV_blank>(trying<S2SV_blank>to<S2SV_blank>replace<S2SV_blank>\" \"entry):<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_ADD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } else { st = ldap_add_ext_s ( ld , standalone_principal_dn , mods , NULL , NULL ) ; } } if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"Principal<S2SV_blank>add<S2SV_blank>failed:<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_ADD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } } else { { char * attrvalues [ ] = { \"krbprincipalaux\" , \"krbTicketPolicyAux\" , NULL } ; int p , q , r = 0 , amask = 0 ; if ( ( st = checkattributevalue ( ld , ( xargs . dn ) ? xargs . dn : principal_dn , \"objectclass\" , attrvalues , & amask ) ) != 0 ) goto cleanup ; memset ( strval , 0 , sizeof ( strval ) ) ; for ( p = 1 , q = 0 ; p <= 2 ; p <<= 1 , ++ q ) { if ( ( p & amask ) == 0 ) strval [ r ++ ] = attrvalues [ q ] ; } if ( r != 0 ) { if ( ( st = krb5_add_str_mem_ldap_mod ( & mods , \"objectclass\" , LDAP_MOD_ADD , strval ) ) != 0 ) goto cleanup ; } } if ( xargs . dn != NULL ) st = ldap_modify_ext_s ( ld , xargs . dn , mods , NULL , NULL ) ; else st = ldap_modify_ext_s ( ld , principal_dn , mods , NULL , NULL ) ; if ( st != LDAP_SUCCESS ) { snprintf ( errbuf , sizeof ( errbuf ) , _ ( \"User<S2SV_blank>modification<S2SV_blank>failed:<S2SV_blank>%s\" ) , ldap_err2string ( st ) ) ; st = translate_ldap_error ( st , OP_MOD ) ; k5_setmsg ( context , st , \"%s\" , errbuf ) ; goto cleanup ; } if ( entry -> mask & KADM5_FAIL_AUTH_COUNT_INCREMENT ) entry -> fail_auth_count ++ ; } cleanup : if ( user ) free ( user ) ; if ( filtuser ) free ( filtuser ) ; free_xargs ( xargs ) ; if ( standalone_principal_dn ) free ( standalone_principal_dn ) ; if ( principal_dn ) free ( principal_dn ) ; if ( polname != NULL ) free ( polname ) ; for ( tre = 0 ; tre < ntrees ; tre ++ ) free ( subtreelist [ tre ] ) ; free ( subtreelist ) ; if ( subtree ) free ( subtree ) ; if ( bersecretkey ) { for ( l = 0 ; bersecretkey [ l ] ; ++ l ) { if ( bersecretkey [ l ] -> bv_val ) free ( bersecretkey [ l ] -> bv_val ) ; free ( bersecretkey [ l ] ) ; } free ( bersecretkey ) ; } if ( keys ) free ( keys ) ; ldap_mods_free ( mods , 1 ) ; ldap_osa_free_princ_ent ( & princ_ent ) ; ldap_msgfree ( result ) ; krb5_ldap_put_handle_to_pool ( ldap_context , ldap_server_handle ) ; return ( st ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( bersecretkey == NULL ) { st = ENOMEM ; goto cleanup ; } if ( bersecretkey [ 0 ] != NULL || ! create_standalone_prinicipal ) { <S2SV_ModEnd> st = krb5_add_ber_mem_ldap_mod <S2SV_ModStart> , bersecretkey ) ; if ( st != 0 ) goto cleanup ; } <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0546\n\n```\nCWE-000 static void usage ( void ) { PRINT_VERSION ; <S2SV_StartBug> puts ( \"Copyright<S2SV_blank>(c)<S2SV_blank>2011,<S2SV_blank>Oracle<S2SV_blank>and/or<S2SV_blank>its<S2SV_blank>affiliates.<S2SV_blank>\" <S2SV_EndBug> \"All<S2SV_blank>rights<S2SV_blank>reserved.\\\\n\" ) ; puts ( \"Enable<S2SV_blank>or<S2SV_blank>disable<S2SV_blank>plugins.\" ) ; printf ( \"\\\\nUsage:<S2SV_blank>%s<S2SV_blank>[options]<S2SV_blank><plugin><S2SV_blank>ENABLE|DISABLE\\\\n\\\\nOptions:\\\\n\" , my_progname ) ; my_print_help ( my_long_options ) ; puts ( \"\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; puts ( \"Copyright<S2SV_blank>(c)<S2SV_blank>2011,<S2SV_blank>2015,<S2SV_blank>Oracle<S2SV_blank>and/or<S2SV_blank>its<S2SV_blank>affiliates.<S2SV_blank>\" <S2SV_ModEnd> \"All<S2SV_blank>rights<S2SV_blank>reserved.\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 static char * pool_strdup ( const char * s ) { <S2SV_StartBug> char * r = pool_alloc ( strlen ( s ) + 1 ) ; <S2SV_EndBug> <S2SV_StartBug> strcpy ( r , s ) ; <S2SV_EndBug> return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { size_t len = strlen ( s ) + 1 ; <S2SV_ModStart> = pool_alloc ( len ) ; memcpy <S2SV_ModEnd> ( r , <S2SV_ModStart> r , s , len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14459\n\n```\nCWE-190 static void Process_ipfix_template_add ( exporter_ipfix_domain_t * exporter , void * DataPtr , uint32_t size_left , FlowSource_t * fs ) { input_translation_t * translation_table ; ipfix_template_record_t * ipfix_template_record ; ipfix_template_elements_std_t * NextElement ; int i ; while ( size_left ) { uint32_t table_id , count , size_required ; uint32_t num_extensions = 0 ; <S2SV_StartBug> if ( size_left && size_left < 4 ) { <S2SV_EndBug> LogError ( \"Process_ipfix<S2SV_blank>[%u]<S2SV_blank>Template<S2SV_blank>size<S2SV_blank>error<S2SV_blank>at<S2SV_blank>%s<S2SV_blank>line<S2SV_blank>%u\" , exporter -> info . id , __FILE__ , __LINE__ , strerror ( errno ) ) ; size_left = 0 ; continue ; } ipfix_template_record = ( ipfix_template_record_t * ) DataPtr ; size_left -= 4 ; table_id = ntohs ( ipfix_template_record -> TemplateID ) ; count = ntohs ( ipfix_template_record -> FieldCount ) ; dbg_printf ( \"\\\\n[%u]<S2SV_blank>Template<S2SV_blank>ID:<S2SV_blank>%u\\\\n\" , exporter -> info . id , table_id ) ; dbg_printf ( \"FieldCount:<S2SV_blank>%u<S2SV_blank>buffersize:<S2SV_blank>%u\\\\n\" , count , size_left ) ; memset ( ( void * ) cache . common_extensions , 0 , ( Max_num_extensions + 1 ) * sizeof ( uint32_t ) ) ; memset ( ( void * ) cache . lookup_info , 0 , 65536 * sizeof ( struct element_param_s ) ) ; for ( i = 1 ; ipfix_element_map [ i ] . id != 0 ; i ++ ) { uint32_t Type = ipfix_element_map [ i ] . id ; if ( ipfix_element_map [ i ] . id == ipfix_element_map [ i - 1 ] . id ) continue ; cache . lookup_info [ Type ] . index = i ; } cache . input_order = calloc ( count , sizeof ( struct order_s ) ) ; if ( ! cache . input_order ) { LogError ( \"Process_ipfix:<S2SV_blank>Panic!<S2SV_blank>malloc():<S2SV_blank>%s<S2SV_blank>line<S2SV_blank>%d:<S2SV_blank>%s\" , __FILE__ , __LINE__ , strerror ( errno ) ) ; size_left = 0 ; continue ; } cache . input_count = count ; size_required = 4 * count ; if ( size_left < size_required ) { LogError ( \"Process_ipfix:<S2SV_blank>[%u]<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>for<S2SV_blank>template<S2SV_blank>elements!<S2SV_blank>required:<S2SV_blank>%i,<S2SV_blank>left:<S2SV_blank>%u\" , exporter -> info . id , size_required , size_left ) ; dbg_printf ( \"ERROR:<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>for<S2SV_blank>template<S2SV_blank>elements!<S2SV_blank>required:<S2SV_blank>%i,<S2SV_blank>left:<S2SV_blank>%u\" , size_required , size_left ) ; return ; } NextElement = ( ipfix_template_elements_std_t * ) ipfix_template_record -> elements ; for ( i = 0 ; i < count ; i ++ ) { uint16_t Type , Length ; uint32_t ext_id ; int Enterprise ; Type = ntohs ( NextElement -> Type ) ; Length = ntohs ( NextElement -> Length ) ; Enterprise = Type & 0x8000 ? 1 : 0 ; Type = Type & 0x7FFF ; ext_id = MapElement ( Type , Length , i ) ; if ( ext_id && extension_descriptor [ ext_id ] . enabled ) { if ( cache . common_extensions [ ext_id ] == 0 ) { cache . common_extensions [ ext_id ] = 1 ; num_extensions ++ ; } } if ( Enterprise ) { ipfix_template_elements_e_t * e = ( ipfix_template_elements_e_t * ) NextElement ; size_required += 4 ; if ( size_left < size_required ) { LogError ( \"Process_ipfix:<S2SV_blank>[%u]<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>for<S2SV_blank>template<S2SV_blank>elements!<S2SV_blank>required:<S2SV_blank>%i,<S2SV_blank>left:<S2SV_blank>%u\" , exporter -> info . id , size_required , size_left ) ; dbg_printf ( \"ERROR:<S2SV_blank>Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>for<S2SV_blank>template<S2SV_blank>elements!<S2SV_blank>required:<S2SV_blank>%i,<S2SV_blank>left:<S2SV_blank>%u\" , size_required , size_left ) ; return ; } if ( ntohl ( e -> EnterpriseNumber ) == IPFIX_ReverseInformationElement ) { dbg_printf ( \"<S2SV_blank>[%i]<S2SV_blank>Enterprise:<S2SV_blank>1,<S2SV_blank>Type:<S2SV_blank>%u,<S2SV_blank>Length<S2SV_blank>%u<S2SV_blank>Reverse<S2SV_blank>Information<S2SV_blank>Element:<S2SV_blank>%u\\\\n\" , i , Type , Length , ntohl ( e -> EnterpriseNumber ) ) ; } else { dbg_printf ( \"<S2SV_blank>[%i]<S2SV_blank>Enterprise:<S2SV_blank>1,<S2SV_blank>Type:<S2SV_blank>%u,<S2SV_blank>Length<S2SV_blank>%u<S2SV_blank>EnterpriseNumber:<S2SV_blank>%u\\\\n\" , i , Type , Length , ntohl ( e -> EnterpriseNumber ) ) ; } e ++ ; NextElement = ( ipfix_template_elements_std_t * ) e ; } else { dbg_printf ( \"<S2SV_blank>[%i]<S2SV_blank>Enterprise:<S2SV_blank>0,<S2SV_blank>Type:<S2SV_blank>%u,<S2SV_blank>Length<S2SV_blank>%u\\\\n\" , i , Type , Length ) ; NextElement ++ ; } } dbg_printf ( \"Processed:<S2SV_blank>%u\\\\n\" , size_required ) ; if ( compact_input_order ( ) ) { if ( extension_descriptor [ EX_ROUTER_IP_v4 ] . enabled ) { if ( cache . common_extensions [ EX_ROUTER_IP_v4 ] == 0 ) { cache . common_extensions [ EX_ROUTER_IP_v4 ] = 1 ; num_extensions ++ ; } dbg_printf ( \"Add<S2SV_blank>sending<S2SV_blank>router<S2SV_blank>IP<S2SV_blank>address<S2SV_blank>(%s)<S2SV_blank>=><S2SV_blank>Extension:<S2SV_blank>%u\\\\n\" , fs -> sa_family == PF_INET6 ? \"ipv6\" : \"ipv4\" , EX_ROUTER_IP_v4 ) ; } extension_descriptor [ EX_ROUTER_ID ] . enabled = 0 ; if ( extension_descriptor [ EX_RECEIVED ] . enabled ) { if ( cache . common_extensions [ EX_RECEIVED ] == 0 ) { cache . common_extensions [ EX_RECEIVED ] = 1 ; num_extensions ++ ; } dbg_printf ( \"Force<S2SV_blank>add<S2SV_blank>packet<S2SV_blank>received<S2SV_blank>time,<S2SV_blank>Extension:<S2SV_blank>%u\\\\n\" , EX_RECEIVED ) ; } # ifdef DEVEL { int i ; for ( i = 4 ; extension_descriptor [ i ] . id ; i ++ ) { if ( cache . common_extensions [ i ] ) { printf ( \"Enabled<S2SV_blank>extension:<S2SV_blank>%i\\\\n\" , i ) ; } } } # endif translation_table = setup_translation_table ( exporter , table_id ) ; if ( translation_table -> extension_map_changed ) { dbg_printf ( \"Translation<S2SV_blank>Table<S2SV_blank>changed!<S2SV_blank>Add<S2SV_blank>extension<S2SV_blank>map<S2SV_blank>ID:<S2SV_blank>%i\\\\n\" , translation_table -> extension_info . map -> map_id ) ; AddExtensionMap ( fs , translation_table -> extension_info . map ) ; translation_table -> extension_map_changed = 0 ; dbg_printf ( \"Translation<S2SV_blank>Table<S2SV_blank>added!<S2SV_blank>map<S2SV_blank>ID:<S2SV_blank>%i\\\\n\" , translation_table -> extension_info . map -> map_id ) ; } if ( ! reorder_sequencer ( translation_table ) ) { LogError ( \"Process_ipfix:<S2SV_blank>[%u]<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>reorder<S2SV_blank>sequencer.<S2SV_blank>Remove<S2SV_blank>table<S2SV_blank>id:<S2SV_blank>%u\" , exporter -> info . id , table_id ) ; remove_translation_table ( fs , exporter , table_id ) ; } } else { dbg_printf ( \"Template<S2SV_blank>does<S2SV_blank>not<S2SV_blank>contain<S2SV_blank>any<S2SV_blank>common<S2SV_blank>fields<S2SV_blank>-<S2SV_blank>skip\\\\n\" ) ; } size_left -= size_required ; DataPtr = DataPtr + size_required + 4 ; if ( size_left < 4 ) { dbg_printf ( \"Skip<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>padding\\\\n\" , size_left ) ; size_left = 0 ; } free ( cache . input_order ) ; cache . input_order = NULL ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> size_left < 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14164\n\n```\nCWE-787 static OPJ_BOOL opj_j2k_write_sot ( opj_j2k_t * p_j2k , OPJ_BYTE * p_data , <S2SV_StartBug> OPJ_UINT32 * p_data_written , <S2SV_EndBug> const opj_stream_private_t * p_stream , opj_event_mgr_t * p_manager ) { assert ( p_j2k != 00 ) ; assert ( p_manager != 00 ) ; assert ( p_stream != 00 ) ; OPJ_UNUSED ( p_stream ) ; OPJ_UNUSED ( p_manager ) ; <S2SV_StartBug> opj_write_bytes ( p_data , J2K_MS_SOT , <S2SV_EndBug> 2 ) ; p_data += 2 ; opj_write_bytes ( p_data , 10 , 2 ) ; p_data += 2 ; opj_write_bytes ( p_data , p_j2k -> m_current_tile_number , 2 ) ; p_data += 2 ; p_data += 4 ; opj_write_bytes ( p_data , p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number , 1 ) ; ++ p_data ; opj_write_bytes ( p_data , p_j2k -> m_cp . tcps [ p_j2k -> m_current_tile_number ] . m_nb_tile_parts , 1 ) ; ++ p_data ; # ifdef USE_JPWL assert ( 0 && \"TODO\" ) ; # endif * p_data_written = 12 ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p_data , OPJ_UINT32 p_total_data_size , OPJ_UINT32 <S2SV_ModStart> p_manager ) ; if ( p_total_data_size < 12 ) { opj_event_msg ( p_manager , EVT_ERROR , \"Not<S2SV_blank>enough<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>output<S2SV_blank>buffer<S2SV_blank>to<S2SV_blank>write<S2SV_blank>SOT<S2SV_blank>marker\\\\n\" ) ; return OPJ_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7513\n\n```\nCWE-000 static int kvm_vm_ioctl_set_pit ( struct kvm * kvm , struct kvm_pit_state * ps ) <S2SV_StartBug> { <S2SV_EndBug> mutex_lock ( & kvm -> arch . vpit -> pit_state . lock ) ; memcpy ( & kvm -> arch . vpit -> pit_state , ps , sizeof ( struct kvm_pit_state ) ) ; <S2SV_StartBug> kvm_pit_load_count ( kvm , 0 , ps -> channels [ 0 ] . count , 0 ) ; <S2SV_EndBug> mutex_unlock ( & kvm -> arch . vpit -> pit_state . lock ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ps ) { int i ; <S2SV_ModStart> ) ) ; for ( i = 0 ; i < 3 ; i ++ ) <S2SV_ModStart> ( kvm , i <S2SV_ModEnd> , ps -> <S2SV_ModStart> -> channels [ i <S2SV_ModEnd> ] . count\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12062\n\n```\nCWE-20 void sink ( int argc , char * * argv , const char * src ) { static BUF buffer ; struct stat stb ; BUF * bp ; off_t i ; size_t j , count ; int amt , exists , first , ofd ; mode_t mode , omode , mask ; off_t size , statbytes ; unsigned long long ull ; int setimes , targisdir , wrerr ; char ch , * cp , * np , * targ , * why , * vect [ 1 ] , buf [ 2048 ] , visbuf [ 2048 ] ; char * * patterns = NULL ; size_t n , npatterns = 0 ; struct timeval tv [ 2 ] ; # define atime tv [ 0 ] # define mtime tv [ 1 ] # define SCREWUP ( str ) { why = str ; goto screwup ; } if ( TYPE_OVERFLOW ( time_t , 0 ) || TYPE_OVERFLOW ( off_t , 0 ) ) SCREWUP ( \"Unexpected<S2SV_blank>off_t/time_t<S2SV_blank>size\" ) ; setimes = targisdir = 0 ; mask = umask ( 0 ) ; if ( ! pflag ) ( void ) umask ( mask ) ; if ( argc != 1 ) { run_err ( \"ambiguous<S2SV_blank>target\" ) ; exit ( 1 ) ; } targ = * argv ; if ( targetshouldbedirectory ) verifydir ( targ ) ; ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; if ( stat ( targ , & stb ) == 0 && S_ISDIR ( stb . st_mode ) ) targisdir = 1 ; if ( src != NULL && ! iamrecursive && ! Tflag ) { if ( brace_expand ( src , & patterns , & npatterns ) != 0 ) fatal ( \"%s:<S2SV_blank>could<S2SV_blank>not<S2SV_blank>expand<S2SV_blank>pattern\" , __func__ ) ; } for ( first = 1 ; ; first = 0 ) { cp = buf ; if ( atomicio ( read , remin , cp , 1 ) != 1 ) goto done ; if ( * cp ++ == '\\\\n' ) SCREWUP ( \"unexpected<S2SV_blank><newline>\" ) ; do { if ( atomicio ( read , remin , & ch , sizeof ( ch ) ) != sizeof ( ch ) ) SCREWUP ( \"lost<S2SV_blank>connection\" ) ; * cp ++ = ch ; } while ( cp < & buf [ sizeof ( buf ) - 1 ] && ch != '\\\\n' ) ; * cp = 0 ; if ( verbose_mode ) fmprintf ( stderr , \"Sink:<S2SV_blank>%s\" , buf ) ; if ( buf [ 0 ] == '\\\\01' || buf [ 0 ] == '\\\\02' ) { if ( iamremote == 0 ) { ( void ) snmprintf ( visbuf , sizeof ( visbuf ) , NULL , \"%s\" , buf + 1 ) ; ( void ) atomicio ( vwrite , STDERR_FILENO , visbuf , strlen ( visbuf ) ) ; } if ( buf [ 0 ] == '\\\\02' ) exit ( 1 ) ; ++ errs ; continue ; } if ( buf [ 0 ] == 'E' ) { ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; goto done ; } if ( ch == '\\\\n' ) * -- cp = 0 ; cp = buf ; if ( * cp == 'T' ) { setimes ++ ; cp ++ ; if ( ! isdigit ( ( unsigned char ) * cp ) ) SCREWUP ( \"mtime.sec<S2SV_blank>not<S2SV_blank>present\" ) ; ull = strtoull ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"mtime.sec<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( TYPE_OVERFLOW ( time_t , ull ) ) setimes = 0 ; mtime . tv_sec = ull ; mtime . tv_usec = strtol ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' || mtime . tv_usec < 0 || mtime . tv_usec > 999999 ) SCREWUP ( \"mtime.usec<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( ! isdigit ( ( unsigned char ) * cp ) ) SCREWUP ( \"atime.sec<S2SV_blank>not<S2SV_blank>present\" ) ; ull = strtoull ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"atime.sec<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( TYPE_OVERFLOW ( time_t , ull ) ) setimes = 0 ; atime . tv_sec = ull ; atime . tv_usec = strtol ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '\\\\0' || atime . tv_usec < 0 || atime . tv_usec > 999999 ) SCREWUP ( \"atime.usec<S2SV_blank>not<S2SV_blank>delimited\" ) ; ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; continue ; } if ( * cp != 'C' && * cp != 'D' ) { if ( first ) { run_err ( \"%s\" , cp ) ; exit ( 1 ) ; } SCREWUP ( \"expected<S2SV_blank>control<S2SV_blank>record\" ) ; } mode = 0 ; for ( ++ cp ; cp < buf + 5 ; cp ++ ) { if ( * cp < '0' || * cp > '7' ) SCREWUP ( \"bad<S2SV_blank>mode\" ) ; mode = ( mode << 3 ) | ( * cp - '0' ) ; } if ( ! pflag ) mode &= ~ mask ; if ( * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"mode<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( ! isdigit ( ( unsigned char ) * cp ) ) SCREWUP ( \"size<S2SV_blank>not<S2SV_blank>present\" ) ; ull = strtoull ( cp , & cp , 10 ) ; if ( ! cp || * cp ++ != '<S2SV_blank>' ) SCREWUP ( \"size<S2SV_blank>not<S2SV_blank>delimited\" ) ; if ( TYPE_OVERFLOW ( off_t , ull ) ) SCREWUP ( \"size<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range\" ) ; size = ( off_t ) ull ; if ( * cp == '\\\\0' || strchr ( cp , '/' ) != NULL || strcmp ( cp , \".\" ) == 0 || strcmp ( cp , \"..\" ) == 0 ) { run_err ( \"error:<S2SV_blank>unexpected<S2SV_blank>filename:<S2SV_blank>%s\" , cp ) ; exit ( 1 ) ; } if ( npatterns > 0 ) { for ( n = 0 ; n < npatterns ; n ++ ) { if ( fnmatch ( patterns [ n ] , cp , 0 ) == 0 ) break ; } if ( n >= npatterns ) SCREWUP ( \"filename<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>request\" ) ; } if ( targisdir ) { static char * namebuf ; static size_t cursize ; size_t need ; need = strlen ( targ ) + strlen ( cp ) + 250 ; if ( need > cursize ) { free ( namebuf ) ; namebuf = xmalloc ( need ) ; cursize = need ; } ( void ) snprintf ( namebuf , need , \"%s%s%s\" , targ , strcmp ( targ , \"/\" ) ? \"/\" : \"\" , cp ) ; np = namebuf ; } else np = targ ; curfile = cp ; exists = stat ( np , & stb ) == 0 ; if ( buf [ 0 ] == 'D' ) { int mod_flag = pflag ; if ( ! iamrecursive ) SCREWUP ( \"received<S2SV_blank>directory<S2SV_blank>without<S2SV_blank>-r\" ) ; if ( exists ) { if ( ! S_ISDIR ( stb . st_mode ) ) { errno = ENOTDIR ; goto bad ; } if ( pflag ) ( void ) chmod ( np , mode ) ; } else { mod_flag = 1 ; if ( mkdir ( np , mode | S_IRWXU ) == - 1 ) goto bad ; } vect [ 0 ] = xstrdup ( np ) ; sink ( 1 , vect , src ) ; if ( setimes ) { setimes = 0 ; <S2SV_StartBug> if ( utimes ( vect [ 0 ] , tv ) == - 1 ) <S2SV_EndBug> run_err ( \"%s:<S2SV_blank>set<S2SV_blank>times:<S2SV_blank>%s\" , vect [ 0 ] , strerror ( errno ) ) ; } if ( mod_flag ) ( void ) chmod ( vect [ 0 ] , mode ) ; free ( vect [ 0 ] ) ; continue ; } omode = mode ; mode |= S_IWUSR ; if ( ( ofd = open ( np , O_WRONLY | O_CREAT , mode ) ) == - 1 ) { bad : run_err ( \"%s:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; continue ; } ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; if ( ( bp = allocbuf ( & buffer , ofd , COPY_BUFLEN ) ) == NULL ) { ( void ) close ( ofd ) ; continue ; } cp = bp -> buf ; wrerr = 0 ; statbytes = 0 ; if ( showprogress ) start_progress_meter ( curfile , size , & statbytes ) ; set_nonblock ( remin ) ; for ( count = i = 0 ; i < size ; i += bp -> cnt ) { amt = bp -> cnt ; if ( i + amt > size ) amt = size - i ; count += amt ; do { j = atomicio6 ( read , remin , cp , amt , scpio , & statbytes ) ; if ( j == 0 ) { run_err ( \"%s\" , j != EPIPE ? strerror ( errno ) : \"dropped<S2SV_blank>connection\" ) ; exit ( 1 ) ; } amt -= j ; cp += j ; } while ( amt > 0 ) ; if ( count == bp -> cnt ) { if ( ! wrerr ) { if ( atomicio ( vwrite , ofd , bp -> buf , count ) != count ) { note_err ( \"%s:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = 1 ; } } count = 0 ; cp = bp -> buf ; } } unset_nonblock ( remin ) ; if ( count != 0 && ! wrerr && atomicio ( vwrite , ofd , bp -> buf , count ) != count ) { note_err ( \"%s:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; wrerr = 1 ; } if ( ! wrerr && ( ! exists || S_ISREG ( stb . st_mode ) ) && ftruncate ( ofd , size ) != 0 ) note_err ( \"%s:<S2SV_blank>truncate:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; if ( pflag ) { if ( exists || omode != mode ) # ifdef HAVE_FCHMOD if ( fchmod ( ofd , omode ) ) { # else if ( chmod ( np , omode ) ) { # endif note_err ( \"%s:<S2SV_blank>set<S2SV_blank>mode:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; } } else { if ( ! exists && omode != mode ) # ifdef HAVE_FCHMOD if ( fchmod ( ofd , omode & ~ mask ) ) { # else if ( chmod ( np , omode & ~ mask ) ) { # endif note_err ( \"%s:<S2SV_blank>set<S2SV_blank>mode:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; } } if ( close ( ofd ) == - 1 ) note_err ( np , \"%s:<S2SV_blank>close:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; ( void ) response ( ) ; if ( showprogress ) stop_progress_meter ( ) ; if ( setimes && ! wrerr ) { setimes = 0 ; if ( utimes ( np , tv ) == - 1 ) { note_err ( \"%s:<S2SV_blank>set<S2SV_blank>times:<S2SV_blank>%s\" , np , strerror ( errno ) ) ; } } if ( note_err ( NULL ) == 0 ) ( void ) atomicio ( vwrite , remout , \"\" , 1 ) ; } done : for ( n = 0 ; n < npatterns ; n ++ ) free ( patterns [ n ] ) ; free ( patterns ) ; return ; screwup : for ( n = 0 ; n < npatterns ; n ++ ) free ( patterns [ n ] ) ; free ( patterns ) ; run_err ( \"protocol<S2SV_blank>error:<S2SV_blank>%s\" , why ) ; exit ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; ( void ) <S2SV_ModEnd> utimes ( vect <S2SV_ModStart> ] , tv <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3235\n\n```\nCWE-200 static int recv_msg ( struct kiocb * iocb , struct socket * sock , struct msghdr * m , size_t buf_len , int flags ) { struct sock * sk = sock -> sk ; struct tipc_port * tport = tipc_sk_port ( sk ) ; struct sk_buff * buf ; struct tipc_msg * msg ; long timeout ; unsigned int sz ; u32 err ; int res ; if ( unlikely ( ! buf_len ) ) return - EINVAL ; lock_sock ( sk ) ; if ( unlikely ( sock -> state == SS_UNCONNECTED ) ) { res = - ENOTCONN ; goto exit ; } <S2SV_StartBug> timeout = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; <S2SV_EndBug> restart : while ( skb_queue_empty ( & sk -> sk_receive_queue ) ) { if ( sock -> state == SS_DISCONNECTING ) { res = - ENOTCONN ; goto exit ; } if ( timeout <= 0L ) { res = timeout ? timeout : - EWOULDBLOCK ; goto exit ; } release_sock ( sk ) ; timeout = wait_event_interruptible_timeout ( * sk_sleep ( sk ) , tipc_rx_ready ( sock ) , timeout ) ; lock_sock ( sk ) ; } buf = skb_peek ( & sk -> sk_receive_queue ) ; msg = buf_msg ( buf ) ; sz = msg_data_sz ( msg ) ; err = msg_errcode ( msg ) ; if ( ( ! sz ) && ( ! err ) ) { advance_rx_queue ( sk ) ; goto restart ; } set_orig_addr ( m , msg ) ; res = anc_data_recv ( m , msg , tport ) ; if ( res ) goto exit ; if ( ! err ) { if ( unlikely ( buf_len < sz ) ) { sz = buf_len ; m -> msg_flags |= MSG_TRUNC ; } res = skb_copy_datagram_iovec ( buf , msg_hdr_sz ( msg ) , m -> msg_iov , sz ) ; if ( res ) goto exit ; res = sz ; } else { if ( ( sock -> state == SS_READY ) || ( ( err == TIPC_CONN_SHUTDOWN ) || m -> msg_control ) ) res = 0 ; else res = - ECONNRESET ; } if ( likely ( ! ( flags & MSG_PEEK ) ) ) { if ( ( sock -> state != SS_READY ) && ( ++ tport -> conn_unacked >= TIPC_FLOW_CONTROL_WIN ) ) tipc_acknowledge ( tport -> ref , tport -> conn_unacked ) ; advance_rx_queue ( sk ) ; } exit : release_sock ( sk ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exit ; } m -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9922\n\n```\nCWE-264 static struct dentry * ecryptfs_mount ( struct file_system_type * fs_type , int flags , const char * dev_name , void * raw_data ) { struct super_block * s ; struct ecryptfs_sb_info * sbi ; struct ecryptfs_dentry_info * root_info ; const char * err = \"Getting<S2SV_blank>sb<S2SV_blank>failed\" ; struct inode * inode ; struct path path ; uid_t check_ruid ; int rc ; sbi = kmem_cache_zalloc ( ecryptfs_sb_info_cache , GFP_KERNEL ) ; if ( ! sbi ) { rc = - ENOMEM ; goto out ; } rc = ecryptfs_parse_options ( sbi , raw_data , & check_ruid ) ; if ( rc ) { err = \"Error<S2SV_blank>parsing<S2SV_blank>options\" ; goto out ; } s = sget ( fs_type , NULL , set_anon_super , flags , NULL ) ; if ( IS_ERR ( s ) ) { rc = PTR_ERR ( s ) ; goto out ; } rc = bdi_setup_and_register ( & sbi -> bdi , \"ecryptfs\" , BDI_CAP_MAP_COPY ) ; if ( rc ) goto out1 ; ecryptfs_set_superblock_private ( s , sbi ) ; s -> s_bdi = & sbi -> bdi ; sbi = NULL ; s -> s_op = & ecryptfs_sops ; s -> s_d_op = & ecryptfs_dops ; err = \"Reading<S2SV_blank>sb<S2SV_blank>failed\" ; rc = kern_path ( dev_name , LOOKUP_FOLLOW | LOOKUP_DIRECTORY , & path ) ; if ( rc ) { ecryptfs_printk ( KERN_WARNING , \"kern_path()<S2SV_blank>failed\\\\n\" ) ; goto out1 ; } if ( path . dentry -> d_sb -> s_type == & ecryptfs_fs_type ) { rc = - EINVAL ; printk ( KERN_ERR \"Mount<S2SV_blank>on<S2SV_blank>filesystem<S2SV_blank>of<S2SV_blank>type<S2SV_blank>\" \"eCryptfs<S2SV_blank>explicitly<S2SV_blank>disallowed<S2SV_blank>due<S2SV_blank>to<S2SV_blank>\" \"known<S2SV_blank>incompatibilities\\\\n\" ) ; goto out_free ; } if ( check_ruid && ! uid_eq ( path . dentry -> d_inode -> i_uid , current_uid ( ) ) ) { rc = - EPERM ; printk ( KERN_ERR \"Mount<S2SV_blank>of<S2SV_blank>device<S2SV_blank>(uid:<S2SV_blank>%d)<S2SV_blank>not<S2SV_blank>owned<S2SV_blank>by<S2SV_blank>\" \"requested<S2SV_blank>user<S2SV_blank>(uid:<S2SV_blank>%d)\\\\n\" , i_uid_read ( path . dentry -> d_inode ) , from_kuid ( & init_user_ns , current_uid ( ) ) ) ; goto out_free ; } ecryptfs_set_superblock_lower ( s , path . dentry -> d_sb ) ; s -> s_flags = flags & ~ MS_POSIXACL ; s -> s_flags |= path . dentry -> d_sb -> s_flags & ( MS_RDONLY | MS_POSIXACL ) ; s -> s_maxbytes = path . dentry -> d_sb -> s_maxbytes ; s -> s_blocksize = path . dentry -> d_sb -> s_blocksize ; s -> s_magic = ECRYPTFS_SUPER_MAGIC ; <S2SV_StartBug> inode = ecryptfs_get_inode ( path . dentry -> d_inode , s ) ; <S2SV_EndBug> rc = PTR_ERR ( inode ) ; if ( IS_ERR ( inode ) ) goto out_free ; s -> s_root = d_make_root ( inode ) ; if ( ! s -> s_root ) { rc = - ENOMEM ; goto out_free ; } rc = - ENOMEM ; root_info = kmem_cache_zalloc ( ecryptfs_dentry_info_cache , GFP_KERNEL ) ; if ( ! root_info ) goto out_free ; ecryptfs_set_dentry_private ( s -> s_root , root_info ) ; root_info -> lower_path = path ; s -> s_flags |= MS_ACTIVE ; return dget ( s -> s_root ) ; out_free : path_put ( & path ) ; out1 : deactivate_locked_super ( s ) ; out : if ( sbi ) { ecryptfs_destroy_mount_crypt_stat ( & sbi -> mount_crypt_stat ) ; kmem_cache_free ( ecryptfs_sb_info_cache , sbi ) ; } printk ( KERN_ERR \"%s;<S2SV_blank>rc<S2SV_blank>=<S2SV_blank>[%d]\\\\n\" , err , rc ) ; return ERR_PTR ( rc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = ECRYPTFS_SUPER_MAGIC ; s -> s_stack_depth = path . dentry -> d_sb -> s_stack_depth + 1 ; rc = - EINVAL ; if ( s -> s_stack_depth > FILESYSTEM_MAX_STACK_DEPTH ) { pr_err ( \"eCryptfs:<S2SV_blank>maximum<S2SV_blank>fs<S2SV_blank>stacking<S2SV_blank>depth<S2SV_blank>exceeded\\\\n\" ) ; goto out_free ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 static void do_ssh2_kex ( void ) { char * myproposal [ PROPOSAL_MAX ] = { KEX_SERVER } ; struct kex * kex ; int r ; myproposal [ PROPOSAL_KEX_ALGS ] = compat_kex_proposal ( options . kex_algorithms ) ; myproposal [ PROPOSAL_ENC_ALGS_CTOS ] = compat_cipher_proposal ( options . ciphers ) ; myproposal [ PROPOSAL_ENC_ALGS_STOC ] = compat_cipher_proposal ( options . ciphers ) ; myproposal [ PROPOSAL_MAC_ALGS_CTOS ] = myproposal [ PROPOSAL_MAC_ALGS_STOC ] = options . macs ; if ( options . compression == COMP_NONE ) { myproposal [ PROPOSAL_COMP_ALGS_CTOS ] = myproposal [ PROPOSAL_COMP_ALGS_STOC ] = \"none\" ; <S2SV_StartBug> } else if ( options . compression == COMP_DELAYED ) { <S2SV_EndBug> myproposal [ PROPOSAL_COMP_ALGS_CTOS ] = myproposal [ PROPOSAL_COMP_ALGS_STOC ] = \"none,zlib@openssh.com\" ; } if ( options . rekey_limit || options . rekey_interval ) packet_set_rekey_limits ( options . rekey_limit , ( time_t ) options . rekey_interval ) ; myproposal [ PROPOSAL_SERVER_HOST_KEY_ALGS ] = compat_pkalg_proposal ( list_hostkey_types ( ) ) ; if ( ( r = kex_setup ( active_state , myproposal ) ) != 0 ) fatal ( \"kex_setup:<S2SV_blank>%s\" , ssh_err ( r ) ) ; kex = active_state -> kex ; # ifdef WITH_OPENSSL kex -> kex [ KEX_DH_GRP1_SHA1 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP14_SHA1 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP14_SHA256 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP16_SHA512 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP18_SHA512 ] = kexdh_server ; kex -> kex [ KEX_DH_GEX_SHA1 ] = kexgex_server ; kex -> kex [ KEX_DH_GEX_SHA256 ] = kexgex_server ; kex -> kex [ KEX_ECDH_SHA2 ] = kexecdh_server ; # endif kex -> kex [ KEX_C25519_SHA256 ] = kexc25519_server ; kex -> server = 1 ; kex -> client_version_string = client_version_string ; kex -> server_version_string = server_version_string ; kex -> load_host_public_key = & get_hostkey_public_by_type ; kex -> load_host_private_key = & get_hostkey_private_by_type ; kex -> host_key_index = & get_hostkey_index ; kex -> sign = sshd_hostkey_sign ; dispatch_run ( DISPATCH_BLOCK , & kex -> done , active_state ) ; session_id2 = kex -> session_id ; session_id2_len = kex -> session_id_len ; # ifdef DEBUG_KEXDH packet_start ( SSH2_MSG_IGNORE ) ; packet_put_cstring ( \"markus\" ) ; packet_send ( ) ; packet_write_wait ( ) ; # endif debug ( \"KEX<S2SV_blank>done\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"none\" ; } <S2SV_ModEnd> if ( options\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9914\n\n```\nCWE-416 void ip4_datagram_release_cb ( struct sock * sk ) { const struct inet_sock * inet = inet_sk ( sk ) ; const struct ip_options_rcu * inet_opt ; __be32 daddr = inet -> inet_daddr ; <S2SV_StartBug> struct flowi4 fl4 ; <S2SV_EndBug> struct rtable * rt ; <S2SV_StartBug> if ( ! __sk_dst_get ( sk ) || __sk_dst_check ( sk , 0 ) ) <S2SV_EndBug> return ; rcu_read_lock ( ) ; inet_opt = rcu_dereference ( inet -> inet_opt ) ; if ( inet_opt && inet_opt -> opt . srr ) daddr = inet_opt -> opt . faddr ; rt = ip_route_output_ports ( sock_net ( sk ) , & fl4 , sk , daddr , inet -> inet_saddr , inet -> inet_dport , inet -> inet_sport , sk -> sk_protocol , RT_CONN_FLAGS ( sk ) , sk -> sk_bound_dev_if ) ; <S2SV_StartBug> if ( ! IS_ERR ( rt ) ) <S2SV_EndBug> <S2SV_StartBug> __sk_dst_set ( sk , & rt -> dst ) ; <S2SV_EndBug> rcu_read_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inet_daddr ; struct dst_entry * dst ; struct <S2SV_ModStart> * rt ; rcu_read_lock ( ) ; dst = __sk_dst_get ( sk ) ; <S2SV_ModStart> if ( ! dst || ! dst -> obsolete || dst -> ops -> check ( dst <S2SV_ModEnd> , 0 ) <S2SV_ModStart> 0 ) ) { rcu_read_unlock ( ) ; return ; } <S2SV_ModEnd> inet_opt = rcu_dereference <S2SV_ModStart> sk_bound_dev_if ) ; dst = <S2SV_ModEnd> ! IS_ERR ( <S2SV_ModStart> ( rt ) ? <S2SV_ModEnd> & rt -> <S2SV_ModStart> & rt -> dst : NULL ; sk_dst_set ( sk ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15265\n\n```\nCWE-416 struct snd_seq_client_port * snd_seq_create_port ( struct snd_seq_client * client , int port ) { unsigned long flags ; struct snd_seq_client_port * new_port , * p ; int num = - 1 ; if ( snd_BUG_ON ( ! client ) ) return NULL ; if ( client -> num_ports >= SNDRV_SEQ_MAX_PORTS ) { pr_warn ( \"ALSA:<S2SV_blank>seq:<S2SV_blank>too<S2SV_blank>many<S2SV_blank>ports<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%d\\\\n\" , client -> number ) ; return NULL ; } new_port = kzalloc ( sizeof ( * new_port ) , GFP_KERNEL ) ; if ( ! new_port ) return NULL ; new_port -> addr . client = client -> number ; new_port -> addr . port = - 1 ; new_port -> owner = THIS_MODULE ; sprintf ( new_port -> name , \"port-%d\" , num ) ; snd_use_lock_init ( & new_port -> use_lock ) ; port_subs_info_init ( & new_port -> c_src ) ; port_subs_info_init ( & new_port -> c_dest ) ; <S2SV_StartBug> num = port >= 0 ? port : 0 ; <S2SV_EndBug> mutex_lock ( & client -> ports_mutex ) ; write_lock_irqsave ( & client -> ports_lock , flags ) ; list_for_each_entry ( p , & client -> ports_list_head , list ) { if ( p -> addr . port > num ) break ; if ( port < 0 ) num = p -> addr . port + 1 ; } list_add_tail ( & new_port -> list , & p -> list ) ; client -> num_ports ++ ; new_port -> addr . port = num ; <S2SV_StartBug> write_unlock_irqrestore ( & client -> ports_lock , flags ) ; <S2SV_EndBug> <S2SV_StartBug> mutex_unlock ( & client -> ports_mutex ) ; <S2SV_EndBug> sprintf ( new_port -> name , \"port-%d\" , num ) ; return new_port ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c_dest ) ; snd_use_lock_use ( & new_port -> use_lock ) ; <S2SV_ModStart> = num ; sprintf ( new_port -> name , \"port-%d\" , num ) ; <S2SV_ModStart> client -> ports_mutex <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8069\n\n```\nCWE-119 static int get_registers ( rtl8150_t * dev , u16 indx , u16 size , void * data ) { <S2SV_StartBug> return usb_control_msg ( dev -> udev , usb_rcvctrlpipe ( dev -> udev , 0 ) , <S2SV_EndBug> RTL8150_REQ_GET_REGS , RTL8150_REQT_READ , <S2SV_StartBug> indx , 0 , data , size , 500 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { void * buf ; int ret ; buf = kmalloc ( size , GFP_NOIO ) ; if ( ! buf ) return - ENOMEM ; ret = <S2SV_ModEnd> usb_control_msg ( dev <S2SV_ModStart> , 0 , buf <S2SV_ModEnd> , size , <S2SV_ModStart> 500 ) ; if ( ret > 0 && ret <= size ) memcpy ( data , buf , ret ) ; kfree ( buf ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20542\n\n```\nCWE-119 LIBXSMM_API_INTERN void libxsmm_sparse_csc_reader ( libxsmm_generated_code * io_generated_code , const char * i_csc_file_in , unsigned int * * o_row_idx , unsigned int * * o_column_idx , double * * o_values , unsigned int * o_row_count , unsigned int * o_column_count , unsigned int * o_element_count ) { FILE * l_csc_file_handle ; const unsigned int l_line_length = 512 ; char l_line [ 512 + 1 ] ; unsigned int l_header_read = 0 ; unsigned int * l_column_idx_id = NULL ; unsigned int l_i = 0 ; l_csc_file_handle = fopen ( i_csc_file_in , \"r\" ) ; if ( l_csc_file_handle == NULL ) { LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSC_INPUT ) ; return ; } while ( fgets ( l_line , l_line_length , l_csc_file_handle ) != NULL ) { if ( strlen ( l_line ) == l_line_length ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_column_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csc_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSC_READ_LEN ) ; return ; } if ( l_line [ 0 ] == '%' ) { continue ; } else { if ( l_header_read == 0 ) { <S2SV_StartBug> if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%u\" , o_row_count , o_column_count , o_element_count ) == 3 ) { <S2SV_EndBug> * o_row_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_element_count ) ) ; * o_column_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( ( size_t ) ( * o_column_count ) + 1 ) ) ; * o_values = ( double * ) malloc ( sizeof ( double ) * ( * o_element_count ) ) ; l_column_idx_id = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_column_count ) ) ; if ( ( * o_row_idx == NULL ) || ( * o_column_idx == NULL ) || ( * o_values == NULL ) || ( l_column_idx_id == NULL ) ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_column_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csc_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSC_ALLOC_DATA ) ; return ; } memset ( * o_row_idx , 0 , sizeof ( unsigned int ) * ( * o_element_count ) ) ; memset ( * o_column_idx , 0 , sizeof ( unsigned int ) * ( ( size_t ) ( * o_column_count ) + 1 ) ) ; memset ( * o_values , 0 , sizeof ( double ) * ( * o_element_count ) ) ; memset ( l_column_idx_id , 0 , sizeof ( unsigned int ) * ( * o_column_count ) ) ; for ( l_i = 0 ; l_i <= * o_column_count ; ++ l_i ) { ( * o_column_idx ) [ l_i ] = * o_element_count ; } ( * o_column_idx ) [ 0 ] = 0 ; l_i = 0 ; l_header_read = 1 ; } else { LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSC_READ_DESC ) ; fclose ( l_csc_file_handle ) ; return ; } } else { unsigned int l_row = 0 , l_column = 0 ; double l_value = 0 ; if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%lf\" , & l_row , & l_column , & l_value ) != 3 ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_column_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; fclose ( l_csc_file_handle ) ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSC_READ_ELEMS ) ; return ; } <S2SV_StartBug> l_row -- ; <S2SV_EndBug> l_column -- ; ( * o_row_idx ) [ l_i ] = l_row ; ( * o_values ) [ l_i ] = l_value ; l_i ++ ; l_column_idx_id [ l_column ] = 1 ; ( * o_column_idx ) [ l_column + 1 ] = l_i ; } } } fclose ( l_csc_file_handle ) ; if ( l_i != ( * o_element_count ) ) { free ( * o_row_idx ) ; free ( * o_column_idx ) ; free ( * o_values ) ; free ( l_column_idx_id ) ; * o_row_idx = 0 ; * o_column_idx = 0 ; * o_values = 0 ; LIBXSMM_HANDLE_ERROR ( io_generated_code , LIBXSMM_ERR_CSC_LEN ) ; return ; } if ( l_column_idx_id != NULL ) { for ( l_i = 0 ; l_i < ( * o_column_count ) ; l_i ++ ) { if ( l_column_idx_id [ l_i ] == 0 ) { ( * o_column_idx ) [ l_i + 1 ] = ( * o_column_idx ) [ l_i ] ; } } free ( l_column_idx_id ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( 3 == <S2SV_ModStart> , o_element_count ) && 0 != * o_row_count && 0 != * o_column_count && 0 != * o_element_count ) <S2SV_ModEnd> { * o_row_idx <S2SV_ModStart> return ; } LIBXSMM_ASSERT ( 0 != l_row && 0 != l_column ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 int cipso_v4_sock_setattr ( struct sock * sk , const struct cipso_v4_doi * doi_def , const struct netlbl_lsm_secattr * secattr ) { int ret_val = - EPERM ; unsigned char * buf = NULL ; u32 buf_len ; u32 opt_len ; <S2SV_StartBug> struct ip_options * opt = NULL ; <S2SV_EndBug> struct inet_sock * sk_inet ; struct inet_connection_sock * sk_conn ; if ( sk == NULL ) return 0 ; buf_len = CIPSO_V4_OPT_LEN_MAX ; buf = kmalloc ( buf_len , GFP_ATOMIC ) ; if ( buf == NULL ) { ret_val = - ENOMEM ; goto socket_setattr_failure ; } ret_val = cipso_v4_genopt ( buf , buf_len , doi_def , secattr ) ; if ( ret_val < 0 ) goto socket_setattr_failure ; buf_len = ret_val ; opt_len = ( buf_len + 3 ) & ~ 3 ; opt = kzalloc ( sizeof ( * opt ) + opt_len , GFP_ATOMIC ) ; if ( opt == NULL ) { ret_val = - ENOMEM ; goto socket_setattr_failure ; } <S2SV_StartBug> memcpy ( opt -> __data , buf , buf_len ) ; <S2SV_EndBug> <S2SV_StartBug> opt -> optlen = opt_len ; <S2SV_EndBug> <S2SV_StartBug> opt -> cipso = sizeof ( struct iphdr ) ; <S2SV_EndBug> kfree ( buf ) ; buf = NULL ; sk_inet = inet_sk ( sk ) ; <S2SV_StartBug> if ( sk_inet -> is_icsk ) { <S2SV_EndBug> sk_conn = inet_csk ( sk ) ; <S2SV_StartBug> if ( sk_inet -> opt ) <S2SV_EndBug> <S2SV_StartBug> sk_conn -> icsk_ext_hdr_len -= sk_inet -> opt -> optlen ; <S2SV_EndBug> <S2SV_StartBug> sk_conn -> icsk_ext_hdr_len += opt -> optlen ; <S2SV_EndBug> sk_conn -> icsk_sync_mss ( sk , sk_conn -> icsk_pmtu_cookie ) ; } <S2SV_StartBug> opt = xchg ( & sk_inet -> opt , opt ) ; <S2SV_EndBug> kfree ( opt ) ; return 0 ; socket_setattr_failure : kfree ( buf ) ; kfree ( opt ) ; return ret_val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> opt_len ; struct ip_options_rcu * old , <S2SV_ModEnd> * opt = <S2SV_ModStart> ( opt -> opt . <S2SV_ModStart> ; opt -> opt . <S2SV_ModStart> ; opt -> opt . <S2SV_ModStart> sk ) ; old = rcu_dereference_protected ( sk_inet -> inet_opt , sock_owned_by_user ( sk ) ) ; <S2SV_ModStart> ; if ( old <S2SV_ModEnd> ) sk_conn -> <S2SV_ModStart> -> icsk_ext_hdr_len -= old -> opt . <S2SV_ModEnd> optlen ; sk_conn <S2SV_ModStart> += opt -> opt . <S2SV_ModStart> ) ; } rcu_assign_pointer ( sk_inet -> inet_opt , opt ) ; if ( old ) call_rcu ( & old -> rcu , opt_kfree_rcu <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15945\n\n```\nCWE-119 static int decode_bit_string ( const u8 * inbuf , size_t inlen , void * outbuf , size_t outlen , int invert ) { const u8 * in = inbuf ; u8 * out = ( u8 * ) outbuf ; <S2SV_StartBug> int zero_bits = * in & 0x07 ; <S2SV_EndBug> <S2SV_StartBug> size_t octets_left = inlen - 1 ; <S2SV_EndBug> <S2SV_StartBug> int i , count = 0 ; <S2SV_EndBug> memset ( outbuf , 0 , outlen ) ; in ++ ; if ( outlen < octets_left ) return SC_ERROR_BUFFER_TOO_SMALL ; if ( inlen < 1 ) return SC_ERROR_INVALID_ASN1_OBJECT ; while ( octets_left ) { int bits_to_go ; * out = 0 ; if ( octets_left == 1 ) bits_to_go = 8 - zero_bits ; else bits_to_go = 8 ; if ( invert ) for ( i = 0 ; i < bits_to_go ; i ++ ) { * out |= ( ( * in >> ( 7 - i ) ) & 1 ) << i ; } else { * out = * in ; } out ++ ; in ++ ; octets_left -- ; count ++ ; } return ( count * 8 ) - zero_bits ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> outbuf ; int i , count = 0 ; int zero_bits ; size_t octets_left ; if ( outlen < octets_left ) return SC_ERROR_BUFFER_TOO_SMALL ; if ( inlen < 1 ) return SC_ERROR_INVALID_ASN1_OBJECT ; <S2SV_ModStart> & 0x07 ; <S2SV_ModEnd> octets_left = inlen <S2SV_ModStart> - 1 ; in ++ ; memset ( outbuf , 0 , outlen ) ; while ( octets_left ) { int bits_to_go ; * out = 0 ; if ( octets_left == 1 ) bits_to_go = 8 - zero_bits ; else bits_to_go = 8 ; if ( invert ) for ( i = 0 ; i < bits_to_go ; i ++ ) { * out |= ( ( * in >> ( 7 - i ) ) & 1 ) << i ; } else { * out = * in ; } out ++ ; in ++ ; octets_left -- ; count ++ ; } return ( count * 8 <S2SV_ModEnd> ) - zero_bits\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8830\n\n```\nCWE-000 static ssize_t aio_run_iocb ( struct kiocb * req , unsigned opcode , char __user * buf , size_t len , bool compat ) { struct file * file = req -> ki_filp ; ssize_t ret ; unsigned long nr_segs ; int rw ; fmode_t mode ; aio_rw_op * rw_op ; rw_iter_op * iter_op ; struct iovec inline_vecs [ UIO_FASTIOV ] , * iovec = inline_vecs ; struct iov_iter iter ; switch ( opcode ) { case IOCB_CMD_PREAD : case IOCB_CMD_PREADV : mode = FMODE_READ ; rw = READ ; rw_op = file -> f_op -> aio_read ; iter_op = file -> f_op -> read_iter ; goto rw_common ; case IOCB_CMD_PWRITE : case IOCB_CMD_PWRITEV : mode = FMODE_WRITE ; rw = WRITE ; rw_op = file -> f_op -> aio_write ; iter_op = file -> f_op -> write_iter ; goto rw_common ; rw_common : if ( unlikely ( ! ( file -> f_mode & mode ) ) ) return - EBADF ; if ( ! rw_op && ! iter_op ) return - EINVAL ; if ( opcode == IOCB_CMD_PREADV || opcode == IOCB_CMD_PWRITEV ) ret = aio_setup_vectored_rw ( req , rw , buf , & nr_segs , <S2SV_StartBug> & len , & iovec , compat ) ; <S2SV_EndBug> else ret = aio_setup_single_vector ( req , rw , buf , & nr_segs , <S2SV_StartBug> len , iovec ) ; <S2SV_EndBug> if ( ! ret ) ret = rw_verify_area ( rw , file , & req -> ki_pos , len ) ; if ( ret < 0 ) { if ( iovec != inline_vecs ) kfree ( iovec ) ; return ret ; } len = ret ; if ( req -> ki_pos < 0 ) { ret = - EINVAL ; break ; } if ( rw == WRITE ) file_start_write ( file ) ; if ( iter_op ) { <S2SV_StartBug> iov_iter_init ( & iter , rw , iovec , nr_segs , len ) ; <S2SV_EndBug> ret = iter_op ( req , & iter ) ; } else { ret = rw_op ( req , iovec , nr_segs , req -> ki_pos ) ; } if ( rw == WRITE ) file_end_write ( file ) ; break ; case IOCB_CMD_FDSYNC : if ( ! file -> f_op -> aio_fsync ) return - EINVAL ; ret = file -> f_op -> aio_fsync ( req , 1 ) ; break ; case IOCB_CMD_FSYNC : if ( ! file -> f_op -> aio_fsync ) return - EINVAL ; ret = file -> f_op -> aio_fsync ( req , 0 ) ; break ; default : pr_debug ( \"EINVAL:<S2SV_blank>no<S2SV_blank>operation<S2SV_blank>provided\\\\n\" ) ; return - EINVAL ; } if ( iovec != inline_vecs ) kfree ( iovec ) ; if ( ret != - EIOCBQUEUED ) { if ( unlikely ( ret == - ERESTARTSYS || ret == - ERESTARTNOINTR || ret == - ERESTARTNOHAND || ret == - ERESTART_RESTARTBLOCK ) ) ret = - EINTR ; aio_complete ( req , ret , 0 ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iovec , compat , & iter <S2SV_ModStart> len , iovec , & iter <S2SV_ModStart> iter_op ) { ret = iter_op ( req , & iter ) ; } else { ret = rw_op ( req , iter . iov , iter . <S2SV_ModEnd> nr_segs , req\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16058\n\n```\nCWE-119 static int key_verify ( pam_handle_t * pamh , int flags , PKCS11_KEY * authkey ) { int ok = 0 ; unsigned char challenge [ 30 ] ; <S2SV_StartBug> unsigned char signature [ 256 ] ; <S2SV_EndBug> <S2SV_StartBug> unsigned int siglen = sizeof signature ; <S2SV_EndBug> const EVP_MD * md = EVP_sha1 ( ) ; EVP_MD_CTX * md_ctx = EVP_MD_CTX_new ( ) ; EVP_PKEY * privkey = PKCS11_get_private_key ( authkey ) ; EVP_PKEY * pubkey = PKCS11_get_public_key ( authkey ) ; <S2SV_StartBug> if ( 1 != randomize ( pamh , challenge , sizeof challenge ) ) { <S2SV_EndBug> goto err ; } if ( NULL == pubkey || NULL == privkey || NULL == md_ctx || NULL == md || ! EVP_SignInit ( md_ctx , md ) || ! EVP_SignUpdate ( md_ctx , challenge , sizeof challenge ) || ! EVP_SignFinal ( md_ctx , signature , & siglen , privkey ) || ! EVP_MD_CTX_reset ( md_ctx ) || ! EVP_VerifyInit ( md_ctx , md ) || ! EVP_VerifyUpdate ( md_ctx , challenge , sizeof challenge ) || 1 != EVP_VerifyFinal ( md_ctx , signature , siglen , pubkey ) ) { pam_syslog ( pamh , LOG_DEBUG , \"Error<S2SV_blank>verifying<S2SV_blank>key:<S2SV_blank>%s\\\\n\" , ERR_reason_error_string ( ERR_get_error ( ) ) ) ; prompt ( flags , pamh , PAM_ERROR_MSG , NULL , _ ( \"Error<S2SV_blank>verifying<S2SV_blank>key\" ) ) ; goto err ; } ok = 1 ; <S2SV_StartBug> err : <S2SV_EndBug> if ( NULL != pubkey ) EVP_PKEY_free ( pubkey ) ; if ( NULL != privkey ) EVP_PKEY_free ( privkey ) ; if ( NULL != md_ctx ) { EVP_MD_CTX_free ( md_ctx ) ; } return ok ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned char * signature = NULL <S2SV_ModEnd> ; unsigned int <S2SV_ModStart> unsigned int siglen <S2SV_ModEnd> ; const EVP_MD <S2SV_ModStart> ; if ( NULL == privkey ) goto err ; siglen = EVP_PKEY_size ( privkey ) ; if ( siglen <= 0 ) goto err ; signature = malloc ( siglen ) ; if ( NULL == signature ) goto err ; if ( <S2SV_ModStart> ; err : free ( signature ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11811\n\n```\nCWE-416 static int try_smi_init ( struct smi_info * new_smi ) { int rv = 0 ; int i ; char * init_name = NULL ; pr_info ( \"Trying<S2SV_blank>%s-specified<S2SV_blank>%s<S2SV_blank>state<S2SV_blank>machine<S2SV_blank>at<S2SV_blank>%s<S2SV_blank>address<S2SV_blank>0x%lx,<S2SV_blank>slave<S2SV_blank>address<S2SV_blank>0x%x,<S2SV_blank>irq<S2SV_blank>%d\\\\n\" , ipmi_addr_src_to_str ( new_smi -> io . addr_source ) , si_to_str [ new_smi -> io . si_type ] , addr_space_to_str [ new_smi -> io . addr_type ] , new_smi -> io . addr_data , new_smi -> io . slave_addr , new_smi -> io . irq ) ; switch ( new_smi -> io . si_type ) { case SI_KCS : new_smi -> handlers = & kcs_smi_handlers ; break ; case SI_SMIC : new_smi -> handlers = & smic_smi_handlers ; break ; case SI_BT : new_smi -> handlers = & bt_smi_handlers ; break ; default : rv = - EIO ; goto out_err ; } new_smi -> si_num = smi_num ; if ( ! new_smi -> io . dev ) { init_name = kasprintf ( GFP_KERNEL , \"ipmi_si.%d\" , new_smi -> si_num ) ; new_smi -> pdev = platform_device_alloc ( \"ipmi_si\" , new_smi -> si_num ) ; if ( ! new_smi -> pdev ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>platform<S2SV_blank>device\\\\n\" ) ; rv = - ENOMEM ; goto out_err ; } new_smi -> io . dev = & new_smi -> pdev -> dev ; new_smi -> io . dev -> driver = & ipmi_platform_driver . driver ; new_smi -> io . dev -> init_name = init_name ; } new_smi -> si_sm = kmalloc ( new_smi -> handlers -> size ( ) , GFP_KERNEL ) ; if ( ! new_smi -> si_sm ) { rv = - ENOMEM ; goto out_err ; } new_smi -> io . io_size = new_smi -> handlers -> init_data ( new_smi -> si_sm , & new_smi -> io ) ; rv = new_smi -> io . io_setup ( & new_smi -> io ) ; if ( rv ) { dev_err ( new_smi -> io . dev , \"Could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>up<S2SV_blank>I/O<S2SV_blank>space\\\\n\" ) ; goto out_err ; } if ( new_smi -> handlers -> detect ( new_smi -> si_sm ) ) { if ( new_smi -> io . addr_source ) dev_err ( new_smi -> io . dev , \"Interface<S2SV_blank>detection<S2SV_blank>failed\\\\n\" ) ; rv = - ENODEV ; goto out_err ; } rv = try_get_dev_id ( new_smi ) ; if ( rv ) { if ( new_smi -> io . addr_source ) dev_err ( new_smi -> io . dev , \"There<S2SV_blank>appears<S2SV_blank>to<S2SV_blank>be<S2SV_blank>no<S2SV_blank>BMC<S2SV_blank>at<S2SV_blank>this<S2SV_blank>location\\\\n\" ) ; goto out_err ; } setup_oem_data_handler ( new_smi ) ; setup_xaction_handlers ( new_smi ) ; check_for_broken_irqs ( new_smi ) ; new_smi -> waiting_msg = NULL ; new_smi -> curr_msg = NULL ; atomic_set ( & new_smi -> req_events , 0 ) ; new_smi -> run_to_completion = false ; for ( i = 0 ; i < SI_NUM_STATS ; i ++ ) atomic_set ( & new_smi -> stats [ i ] , 0 ) ; new_smi -> interrupt_disabled = true ; atomic_set ( & new_smi -> need_watch , 0 ) ; rv = try_enable_event_buffer ( new_smi ) ; if ( rv == 0 ) new_smi -> has_event_buffer = true ; start_clear_flags ( new_smi ) ; if ( new_smi -> io . irq ) { new_smi -> interrupt_disabled = false ; atomic_set ( & new_smi -> req_events , 1 ) ; } if ( new_smi -> pdev && ! new_smi -> pdev_registered ) { rv = platform_device_add ( new_smi -> pdev ) ; if ( rv ) { dev_err ( new_smi -> io . dev , \"Unable<S2SV_blank>to<S2SV_blank>register<S2SV_blank>system<S2SV_blank>interface<S2SV_blank>device:<S2SV_blank>%d\\\\n\" , rv ) ; goto out_err ; } new_smi -> pdev_registered = true ; } dev_set_drvdata ( new_smi -> io . dev , new_smi ) ; rv = device_add_group ( new_smi -> io . dev , & ipmi_si_dev_attr_group ) ; if ( rv ) { dev_err ( new_smi -> io . dev , \"Unable<S2SV_blank>to<S2SV_blank>add<S2SV_blank>device<S2SV_blank>attributes:<S2SV_blank>error<S2SV_blank>%d\\\\n\" , rv ) ; goto out_err ; } new_smi -> dev_group_added = true ; rv = ipmi_register_smi ( & handlers , new_smi , new_smi -> io . dev , new_smi -> io . slave_addr ) ; if ( rv ) { dev_err ( new_smi -> io . dev , \"Unable<S2SV_blank>to<S2SV_blank>register<S2SV_blank>device:<S2SV_blank>error<S2SV_blank>%d\\\\n\" , rv ) ; goto out_err ; } smi_num ++ ; dev_info ( new_smi -> io . dev , \"IPMI<S2SV_blank>%s<S2SV_blank>interface<S2SV_blank>initialized\\\\n\" , si_to_str [ new_smi -> io . si_type ] ) ; WARN_ON ( new_smi -> io . dev -> init_name != NULL ) ; out_err : <S2SV_StartBug> kfree ( init_name ) ; <S2SV_EndBug> return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; out_err : if ( rv && new_smi -> io . io_cleanup ) { new_smi -> io . io_cleanup ( & new_smi -> io ) ; new_smi -> io . io_cleanup = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void encode_loopfilter ( struct loopfilter * lf , <S2SV_StartBug> struct vp9_write_bit_buffer * wb ) { <S2SV_EndBug> int i ; <S2SV_StartBug> vp9_wb_write_literal ( wb , lf -> filter_level , 6 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_literal ( wb , lf -> sharpness_level , 3 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_bit ( wb , lf -> mode_ref_delta_enabled ) ; <S2SV_EndBug> if ( lf -> mode_ref_delta_enabled ) { <S2SV_StartBug> vp9_wb_write_bit ( wb , lf -> mode_ref_delta_update ) ; <S2SV_EndBug> if ( lf -> mode_ref_delta_update ) { for ( i = 0 ; i < MAX_REF_LF_DELTAS ; i ++ ) { const int delta = lf -> ref_deltas [ i ] ; const int changed = delta != lf -> last_ref_deltas [ i ] ; <S2SV_StartBug> vp9_wb_write_bit ( wb , changed ) ; <S2SV_EndBug> if ( changed ) { lf -> last_ref_deltas [ i ] = delta ; <S2SV_StartBug> vp9_wb_write_literal ( wb , abs ( delta ) & 0x3F , 6 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_bit ( wb , delta < 0 ) ; <S2SV_EndBug> } } for ( i = 0 ; i < MAX_MODE_LF_DELTAS ; i ++ ) { const int delta = lf -> mode_deltas [ i ] ; const int changed = delta != lf -> last_mode_deltas [ i ] ; <S2SV_StartBug> vp9_wb_write_bit ( wb , changed ) ; <S2SV_EndBug> if ( changed ) { lf -> last_mode_deltas [ i ] = delta ; <S2SV_StartBug> vp9_wb_write_literal ( wb , abs ( delta ) & 0x3F , 6 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_wb_write_bit ( wb , delta < 0 ) ; <S2SV_EndBug> } } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lf , struct vpx_write_bit_buffer <S2SV_ModEnd> * wb ) <S2SV_ModStart> int i ; vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> 6 ) ; vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> 3 ) ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> mode_ref_delta_enabled ) { vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> i ] ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> = delta ; vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> 6 ) ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> i ] ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> = delta ; vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> 6 ) ; vpx_wb_write_bit <S2SV_ModEnd> ( wb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-20740\n\n```\nCWE-787 void pdf_get_version ( FILE * fp , pdf_t * pdf ) { <S2SV_StartBug> char * header , * c ; <S2SV_EndBug> <S2SV_StartBug> header = get_header ( fp ) ; <S2SV_EndBug> if ( ( c = strstr ( header , \"%PDF-\" ) ) && <S2SV_StartBug> ( c + strlen ( \"%PDF-M.m\" ) + 2 ) ) <S2SV_EndBug> { pdf -> pdf_major_version = atoi ( c + strlen ( \"%PDF-\" ) ) ; pdf -> pdf_minor_version = atoi ( c + strlen ( \"%PDF-M.\" ) ) ; } free ( header ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * header <S2SV_ModEnd> = get_header ( <S2SV_ModStart> ( fp ) ; const char * c <S2SV_ModStart> ) && ( ( c + 6 ) [ 0 ] == '.' ) && isdigit ( ( c + 5 ) [ 0 ] ) && isdigit ( ( c + 7 ) [ 0 ] <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 static int dccp_v6_connect ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct sockaddr_in6 * usin = ( struct sockaddr_in6 * ) uaddr ; struct inet_connection_sock * icsk = inet_csk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct dccp_sock * dp = dccp_sk ( sk ) ; <S2SV_StartBug> struct in6_addr * saddr = NULL , * final_p , final ; <S2SV_EndBug> struct flowi6 fl6 ; struct dst_entry * dst ; int addr_type ; int err ; dp -> dccps_role = DCCP_ROLE_CLIENT ; if ( addr_len < SIN6_LEN_RFC2133 ) return - EINVAL ; if ( usin -> sin6_family != AF_INET6 ) return - EAFNOSUPPORT ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; if ( np -> sndflow ) { fl6 . flowlabel = usin -> sin6_flowinfo & IPV6_FLOWINFO_MASK ; IP6_ECN_flow_init ( fl6 . flowlabel ) ; if ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) { struct ip6_flowlabel * flowlabel ; flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( flowlabel == NULL ) return - EINVAL ; fl6_sock_release ( flowlabel ) ; } } if ( ipv6_addr_any ( & usin -> sin6_addr ) ) usin -> sin6_addr . s6_addr [ 15 ] = 1 ; addr_type = ipv6_addr_type ( & usin -> sin6_addr ) ; if ( addr_type & IPV6_ADDR_MULTICAST ) return - ENETUNREACH ; if ( addr_type & IPV6_ADDR_LINKLOCAL ) { if ( addr_len >= sizeof ( struct sockaddr_in6 ) && usin -> sin6_scope_id ) { if ( sk -> sk_bound_dev_if && sk -> sk_bound_dev_if != usin -> sin6_scope_id ) return - EINVAL ; sk -> sk_bound_dev_if = usin -> sin6_scope_id ; } if ( ! sk -> sk_bound_dev_if ) return - EINVAL ; } sk -> sk_v6_daddr = usin -> sin6_addr ; np -> flow_label = fl6 . flowlabel ; if ( addr_type == IPV6_ADDR_MAPPED ) { u32 exthdrlen = icsk -> icsk_ext_hdr_len ; struct sockaddr_in sin ; SOCK_DEBUG ( sk , \"connect:<S2SV_blank>ipv4<S2SV_blank>mapped\\\\n\" ) ; if ( __ipv6_only_sock ( sk ) ) return - ENETUNREACH ; sin . sin_family = AF_INET ; sin . sin_port = usin -> sin6_port ; sin . sin_addr . s_addr = usin -> sin6_addr . s6_addr32 [ 3 ] ; icsk -> icsk_af_ops = & dccp_ipv6_mapped ; sk -> sk_backlog_rcv = dccp_v4_do_rcv ; err = dccp_v4_connect ( sk , ( struct sockaddr * ) & sin , sizeof ( sin ) ) ; if ( err ) { icsk -> icsk_ext_hdr_len = exthdrlen ; icsk -> icsk_af_ops = & dccp_ipv6_af_ops ; sk -> sk_backlog_rcv = dccp_v6_do_rcv ; goto failure ; } np -> saddr = sk -> sk_v6_rcv_saddr ; return err ; } if ( ! ipv6_addr_any ( & sk -> sk_v6_rcv_saddr ) ) saddr = & sk -> sk_v6_rcv_saddr ; fl6 . flowi6_proto = IPPROTO_DCCP ; fl6 . daddr = sk -> sk_v6_daddr ; fl6 . saddr = saddr ? * saddr : np -> saddr ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . fl6_dport = usin -> sin6_port ; fl6 . fl6_sport = inet -> inet_sport ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , np -> opt , & final ) ; <S2SV_EndBug> dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) { err = PTR_ERR ( dst ) ; goto failure ; } if ( saddr == NULL ) { saddr = & fl6 . saddr ; sk -> sk_v6_rcv_saddr = * saddr ; } np -> saddr = * saddr ; inet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; __ip6_dst_store ( sk , dst , NULL , NULL ) ; icsk -> icsk_ext_hdr_len = 0 ; <S2SV_StartBug> if ( np -> opt != NULL ) <S2SV_EndBug> <S2SV_StartBug> icsk -> icsk_ext_hdr_len = ( np -> opt -> opt_flen + <S2SV_EndBug> <S2SV_StartBug> np -> opt -> opt_nflen ) ; <S2SV_EndBug> inet -> inet_dport = usin -> sin6_port ; dccp_set_state ( sk , DCCP_REQUESTING ) ; err = inet6_hash_connect ( & dccp_death_row , sk ) ; if ( err ) goto late_failure ; dp -> dccps_iss = secure_dccpv6_sequence_number ( np -> saddr . s6_addr32 , sk -> sk_v6_daddr . s6_addr32 , inet -> inet_sport , inet -> inet_dport ) ; err = dccp_connect ( sk ) ; if ( err ) goto late_failure ; return 0 ; late_failure : dccp_set_state ( sk , DCCP_CLOSED ) ; __sk_dst_reset ( sk ) ; failure : inet -> inet_dport = 0 ; sk -> sk_route_caps = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> final_p , final ; struct ipv6_txoptions * opt <S2SV_ModStart> ) ) ; opt = rcu_dereference_protected ( np -> opt , sock_owned_by_user ( sk ) ) ; <S2SV_ModStart> & fl6 , <S2SV_ModEnd> opt , & <S2SV_ModStart> ; if ( opt <S2SV_ModEnd> ) icsk -> <S2SV_ModStart> -> icsk_ext_hdr_len = <S2SV_ModEnd> opt -> opt_flen <S2SV_ModStart> -> opt_flen + <S2SV_ModEnd> opt -> opt_nflen <S2SV_ModStart> opt -> opt_nflen <S2SV_ModEnd> ; inet ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 void mpls_print ( netdissect_options * ndo , const u_char * bp , u_int length ) { const u_char * p ; uint32_t label_entry ; uint16_t label_stack_depth = 0 ; enum mpls_packet_type pt = PT_UNKNOWN ; p = bp ; ND_PRINT ( ( ndo , \"MPLS\" ) ) ; do { ND_TCHECK2 ( * p , sizeof ( label_entry ) ) ; if ( length < sizeof ( label_entry ) ) { ND_PRINT ( ( ndo , \"[|MPLS],<S2SV_blank>length<S2SV_blank>%u\" , length ) ) ; return ; } label_entry = EXTRACT_32BITS ( p ) ; ND_PRINT ( ( ndo , \"%s(label<S2SV_blank>%u\" , ( label_stack_depth && ndo -> ndo_vflag ) ? \"\\\\n\\\\t\" : \"<S2SV_blank>\" , MPLS_LABEL ( label_entry ) ) ) ; label_stack_depth ++ ; if ( ndo -> ndo_vflag && MPLS_LABEL ( label_entry ) < sizeof ( mpls_labelname ) / sizeof ( mpls_labelname [ 0 ] ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , mpls_labelname [ MPLS_LABEL ( label_entry ) ] ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>exp<S2SV_blank>%u\" , MPLS_EXP ( label_entry ) ) ) ; if ( MPLS_STACK ( label_entry ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>[S]\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>ttl<S2SV_blank>%u)\" , MPLS_TTL ( label_entry ) ) ) ; p += sizeof ( label_entry ) ; length -= sizeof ( label_entry ) ; } while ( ! MPLS_STACK ( label_entry ) ) ; switch ( MPLS_LABEL ( label_entry ) ) { case 0 : case 3 : pt = PT_IPV4 ; break ; case 2 : pt = PT_IPV6 ; break ; default : ND_TCHECK ( * p ) ; if ( length < 1 ) { return ; } switch ( * p ) { case 0x45 : case 0x46 : case 0x47 : case 0x48 : case 0x49 : case 0x4a : case 0x4b : case 0x4c : case 0x4d : case 0x4e : case 0x4f : pt = PT_IPV4 ; break ; case 0x60 : case 0x61 : case 0x62 : case 0x63 : case 0x64 : case 0x65 : case 0x66 : case 0x67 : case 0x68 : case 0x69 : case 0x6a : case 0x6b : case 0x6c : case 0x6d : case 0x6e : case 0x6f : pt = PT_IPV6 ; break ; case 0x81 : case 0x82 : case 0x83 : pt = PT_OSI ; break ; default : break ; } } if ( pt == PT_UNKNOWN ) { if ( ! ndo -> ndo_suppress_default_print ) ND_DEFAULTPRINT ( p , length ) ; return ; } ND_PRINT ( ( ndo , ndo -> ndo_vflag ? \"\\\\n\\\\t\" : \"<S2SV_blank>\" ) ) ; switch ( pt ) { case PT_IPV4 : ip_print ( ndo , p , length ) ; break ; case PT_IPV6 : ip6_print ( ndo , p , length ) ; break ; case PT_OSI : <S2SV_StartBug> isoclns_print ( ndo , p , length , length ) ; <S2SV_EndBug> break ; default : break ; } return ; trunc : ND_PRINT ( ( ndo , \"[|MPLS]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 BOOL SQLWriteFileDSN ( LPCSTR pszFileName , LPCSTR pszAppName , LPCSTR pszKeyName , LPCSTR pszString ) { HINI hIni ; char szFileName [ ODBC_FILENAME_MAX + 1 ] ; if ( pszFileName [ 0 ] == '/' ) { <S2SV_StartBug> strncpy ( szFileName , sizeof ( szFileName ) - 5 , pszFileName ) ; <S2SV_EndBug> } else { char szPath [ ODBC_FILENAME_MAX + 1 ] ; * szPath = '\\\\0' ; _odbcinst_FileINI ( szPath ) ; snprintf ( szFileName , sizeof ( szFileName ) - 5 , \"%s/%s\" , szPath , pszFileName ) ; } if ( strlen ( szFileName ) < 4 || strcmp ( szFileName + strlen ( szFileName ) - 4 , \".dsn\" ) ) { strcat ( szFileName , \".dsn\" ) ; } # ifdef __OS2__ if ( iniOpen ( & hIni , szFileName , \"#;\" , '[' , ']' , '=' , TRUE , 0L ) != INI_SUCCESS ) # else if ( iniOpen ( & hIni , szFileName , \"#;\" , '[' , ']' , '=' , TRUE ) != INI_SUCCESS ) # endif { inst_logPushMsg ( __FILE__ , __FILE__ , __LINE__ , LOG_CRITICAL , ODBC_ERROR_INVALID_PATH , \"\" ) ; return FALSE ; } if ( pszString == NULL && pszKeyName == NULL ) { if ( iniObjectSeek ( hIni , ( char * ) pszAppName ) == INI_SUCCESS ) { iniObjectDelete ( hIni ) ; } } else if ( pszString == NULL ) { if ( iniPropertySeek ( hIni , ( char * ) pszAppName , ( char * ) pszKeyName , \"\" ) == INI_SUCCESS ) { iniPropertyDelete ( hIni ) ; } } else { if ( iniObjectSeek ( hIni , ( char * ) pszAppName ) != INI_SUCCESS ) { iniObjectInsert ( hIni , ( char * ) pszAppName ) ; } if ( iniPropertySeek ( hIni , ( char * ) pszAppName , ( char * ) pszKeyName , \"\" ) == INI_SUCCESS ) { iniObjectSeek ( hIni , ( char * ) pszAppName ) ; iniPropertyUpdate ( hIni , ( char * ) pszKeyName , ( char * ) pszString ) ; } else { iniObjectSeek ( hIni , ( char * ) pszAppName ) ; iniPropertyInsert ( hIni , ( char * ) pszKeyName , ( char * ) pszString ) ; } } if ( iniCommit ( hIni ) != INI_SUCCESS ) { iniClose ( hIni ) ; inst_logPushMsg ( __FILE__ , __FILE__ , __LINE__ , LOG_CRITICAL , ODBC_ERROR_REQUEST_FAILED , \"\" ) ; return FALSE ; } iniClose ( hIni ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( szFileName , pszFileName , <S2SV_ModStart> ) - 5 <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9708\n\n```\nCWE-000 static int requireDirective ( MaState * state , cchar * key , cchar * value ) { char * age , * type , * rest , * option , * ovalue , * tok ; int domains ; if ( ! maTokenize ( state , value , \"%S<S2SV_blank>?*\" , & type , & rest ) ) { return MPR_ERR_BAD_SYNTAX ; } if ( scaselesscmp ( type , \"ability\" ) == 0 ) { httpSetAuthRequiredAbilities ( state -> auth , rest ) ; } else if ( scaselesscmp ( type , \"group\" ) == 0 || scaselesscmp ( type , \"role\" ) == 0 ) { httpSetAuthRequiredAbilities ( state -> auth , rest ) ; } else if ( scaselesscmp ( type , \"secure\" ) == 0 ) { domains = 0 ; age = 0 ; for ( option = stok ( sclone ( rest ) , \"<S2SV_blank>\\\\t\" , & tok ) ; option ; option = stok ( 0 , \"<S2SV_blank>\\\\t\" , & tok ) ) { <S2SV_StartBug> option = stok ( option , \"<S2SV_blank>=\\\\t,\" , & ovalue ) ; <S2SV_EndBug> ovalue = strim ( ovalue , \"\\\\\"\\'\" , MPR_TRIM_BOTH ) ; if ( smatch ( option , \"age\" ) ) { age = sfmt ( \"%lld\" , ( int64 ) httpGetTicks ( ovalue ) ) ; } else if ( smatch ( option , \"domains\" ) ) { domains = 1 ; } } if ( age ) { if ( domains ) { age = sjoin ( \"-1\" , age , NULL ) ; } } addCondition ( state , \"secure\" , age , HTTP_ROUTE_STRICT_TLS ) ; } else if ( scaselesscmp ( type , \"user\" ) == 0 ) { httpSetAuthPermittedUsers ( state -> auth , rest ) ; } else if ( scaselesscmp ( type , \"valid-user\" ) == 0 ) { httpSetAuthAnyValidUser ( state -> auth ) ; } else { return configError ( state , key ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { option = ssplit <S2SV_ModEnd> ( option ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9140\n\n```\nCWE-119 static void ppp_hdlc ( netdissect_options * ndo , const u_char * p , int length ) { <S2SV_StartBug> u_char * b , * s , * t , c ; <S2SV_EndBug> int i , proto ; const void * se ; if ( length <= 0 ) return ; <S2SV_StartBug> b = ( uint8_t * ) malloc ( length ) ; <S2SV_EndBug> if ( b == NULL ) return ; <S2SV_StartBug> for ( s = ( u_char * ) p , t = b , i = length ; i > 0 ; i -- ) { <S2SV_EndBug> c = * s ++ ; if ( c == 0x7d ) { <S2SV_StartBug> if ( i > 1 ) { <S2SV_EndBug> i -- ; <S2SV_StartBug> c = * s ++ ^ 0x20 ; <S2SV_EndBug> } else continue ; } * t ++ = c ; } se = ndo -> ndo_snapend ; ndo -> ndo_snapend = t ; length = t - b ; if ( length < 1 ) goto trunc ; proto = * b ; switch ( proto ) { case PPP_IP : ip_print ( ndo , b + 1 , length - 1 ) ; goto cleanup ; case PPP_IPV6 : ip6_print ( ndo , b + 1 , length - 1 ) ; goto cleanup ; default : break ; } if ( length < 2 ) goto trunc ; proto = EXTRACT_16BITS ( b ) ; switch ( proto ) { case ( PPP_ADDRESS << 8 | PPP_CONTROL ) : if ( length < 4 ) goto trunc ; proto = EXTRACT_16BITS ( b + 2 ) ; handle_ppp ( ndo , proto , b + 4 , length - 4 ) ; break ; default : handle_ppp ( ndo , proto , b + 2 , length - 2 ) ; break ; } cleanup : ndo -> ndo_snapend = se ; free ( b ) ; return ; trunc : ndo -> ndo_snapend = se ; free ( b ) ; ND_PRINT ( ( ndo , \"[|ppp]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> b , * <S2SV_ModEnd> t , c <S2SV_ModStart> t , c ; const u_char * s <S2SV_ModStart> b = ( u_char <S2SV_ModEnd> * ) malloc <S2SV_ModStart> ( s = <S2SV_ModEnd> p , t <S2SV_ModStart> i > 0 && ND_TTEST ( * s ) <S2SV_ModStart> if ( i <= 1 || ! ND_TTEST ( * s ) ) break ; <S2SV_ModEnd> i -- ; <S2SV_ModStart> ++ ^ 0x20 <S2SV_ModEnd> ; } *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0840\n\n```\nCWE-119 void ih264d_rest_of_residual_cav_chroma_dc_block ( UWORD32 u4_total_coeff_trail_one , dec_bit_stream_t * ps_bitstrm ) { UWORD32 u4_total_zeroes ; WORD16 i ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 u4_bitstream_offset = ps_bitstrm -> u4_ofst ; UWORD32 u4_trailing_ones = u4_total_coeff_trail_one & 0xFFFF ; UWORD32 u4_total_coeff = u4_total_coeff_trail_one >> 16 ; <S2SV_StartBug> WORD16 i2_level_arr [ 4 ] ; <S2SV_EndBug> tu_sblk4x4_coeff_data_t * ps_tu_4x4 ; WORD16 * pi2_coeff_data ; dec_struct_t * ps_dec = ( dec_struct_t * ) ps_bitstrm -> pv_codec_handle ; ps_tu_4x4 = ( tu_sblk4x4_coeff_data_t * ) ps_dec -> pv_parse_tu_coeff_data ; ps_tu_4x4 -> u2_sig_coeff_map = 0 ; pi2_coeff_data = & ps_tu_4x4 -> ai2_level [ 0 ] ; i = u4_total_coeff - 1 ; if ( u4_trailing_ones ) { UWORD32 u4_signs , u4_cnt = u4_trailing_ones ; WORD16 ( * ppi2_trlone_lkup ) [ 3 ] = ( WORD16 ( * ) [ 3 ] ) gai2_ih264d_trailing_one_level ; WORD16 * pi2_trlone_lkup ; GETBITS ( u4_signs , u4_bitstream_offset , pu4_bitstrm_buf , u4_cnt ) ; pi2_trlone_lkup = ppi2_trlone_lkup [ ( 1 << u4_cnt ) - 2 + u4_signs ] ; while ( u4_cnt -- ) i2_level_arr [ i -- ] = * pi2_trlone_lkup ++ ; } if ( i >= 0 ) { UWORD32 u4_lev_suffix , u4_suffix_len , u4_lev_suffix_size ; UWORD16 u2_lev_code , u2_abs_value ; UWORD32 u4_lev_prefix ; FIND_ONE_IN_STREAM_32 ( u4_lev_prefix , u4_bitstream_offset , pu4_bitstrm_buf ) ; u2_lev_code = MIN ( 15 , u4_lev_prefix ) ; u2_lev_code += ( 3 == u4_trailing_ones ) ? 0 : ( 2 ) ; if ( 14 == u4_lev_prefix ) u4_lev_suffix_size = 4 ; else if ( 15 <= u4_lev_prefix ) { u2_lev_code += 15 ; u4_lev_suffix_size = u4_lev_prefix - 3 ; } else u4_lev_suffix_size = 0 ; if ( 16 <= u4_lev_prefix ) { u2_lev_code += ( ( 1 << ( u4_lev_prefix - 3 ) ) - 4096 ) ; } if ( u4_lev_suffix_size ) { GETBITS ( u4_lev_suffix , u4_bitstream_offset , pu4_bitstrm_buf , u4_lev_suffix_size ) ; u2_lev_code += u4_lev_suffix ; } u2_abs_value = ( u2_lev_code + 2 ) >> 1 ; i2_level_arr [ i -- ] = ( u2_lev_code & 1 ) ? - u2_abs_value : u2_abs_value ; u4_suffix_len = ( u2_abs_value > 3 ) ? 2 : 1 ; while ( i >= 0 ) { FIND_ONE_IN_STREAM_32 ( u4_lev_prefix , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_lev_suffix_size = ( 15 <= u4_lev_prefix ) ? ( u4_lev_prefix - 3 ) : u4_suffix_len ; GETBITS ( u4_lev_suffix , u4_bitstream_offset , pu4_bitstrm_buf , u4_lev_suffix_size ) ; u2_lev_code = ( MIN ( u4_lev_prefix , 15 ) << u4_suffix_len ) + u4_lev_suffix ; if ( 16 <= u4_lev_prefix ) { u2_lev_code += ( ( 1 << ( u4_lev_prefix - 3 ) ) - 4096 ) ; } u2_abs_value = ( u2_lev_code + 2 ) >> 1 ; i2_level_arr [ i -- ] = ( u2_lev_code & 1 ) ? - u2_abs_value : u2_abs_value ; u4_suffix_len += ( u2_abs_value > ( 3 << ( u4_suffix_len - 1 ) ) ) ; } } if ( u4_total_coeff < 4 ) { UWORD32 u4_max_ldz = ( 4 - u4_total_coeff ) ; FIND_ONE_IN_STREAM_LEN ( u4_total_zeroes , u4_bitstream_offset , pu4_bitstrm_buf , u4_max_ldz ) ; } else u4_total_zeroes = 0 ; { const UWORD8 * pu1_table_runbefore ; UWORD32 u4_run ; UWORD32 u4_scan_pos = ( u4_total_coeff + u4_total_zeroes - 1 ) ; UWORD32 u4_zeroes_left = u4_total_zeroes ; i = u4_total_coeff - 1 ; pu1_table_runbefore = ( UWORD8 * ) gau1_ih264d_table_run_before ; while ( u4_zeroes_left && i ) { UWORD32 u4_code ; NEXTBITS ( u4_code , u4_bitstream_offset , pu4_bitstrm_buf , 3 ) ; u4_code = pu1_table_runbefore [ u4_code + ( u4_zeroes_left << 3 ) ] ; u4_run = u4_code >> 2 ; FLUSHBITS ( u4_bitstream_offset , ( u4_code & 0x03 ) ) ; SET_BIT ( ps_tu_4x4 -> u2_sig_coeff_map , u4_scan_pos ) ; * pi2_coeff_data ++ = i2_level_arr [ i -- ] ; u4_zeroes_left -= u4_run ; u4_scan_pos -= ( u4_run + 1 ) ; } while ( i >= 0 ) { SET_BIT ( ps_tu_4x4 -> u2_sig_coeff_map , u4_scan_pos ) ; * pi2_coeff_data ++ = i2_level_arr [ i -- ] ; u4_scan_pos -- ; } } { WORD32 offset ; offset = ( UWORD8 * ) pi2_coeff_data - ( UWORD8 * ) ps_tu_4x4 ; offset = ALIGN4 ( offset ) ; ps_dec -> pv_parse_tu_coeff_data = ( void * ) ( ( UWORD8 * ) ps_dec -> pv_parse_tu_coeff_data + offset ) ; } ps_bitstrm -> u4_ofst = u4_bitstream_offset ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 16 ; WORD16 ai2_level_arr [ 7 ] ; WORD16 * i2_level_arr = & ai2_level_arr [ 3 <S2SV_ModEnd> ] ; tu_sblk4x4_coeff_data_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8666\n\n```\nCWE-400 static enum gro_result dev_gro_receive ( struct napi_struct * napi , struct sk_buff * skb ) { struct sk_buff * * pp = NULL ; struct packet_offload * ptype ; __be16 type = skb -> protocol ; struct list_head * head = & offload_base ; int same_flow ; enum gro_result ret ; int grow ; if ( ! ( skb -> dev -> features & NETIF_F_GRO ) ) goto normal ; if ( skb_is_gso ( skb ) || skb_has_frag_list ( skb ) || skb -> csum_bad ) goto normal ; gro_list_prepare ( napi , skb ) ; rcu_read_lock ( ) ; list_for_each_entry_rcu ( ptype , head , list ) { if ( ptype -> type != type || ! ptype -> callbacks . gro_receive ) continue ; skb_set_network_header ( skb , skb_gro_offset ( skb ) ) ; skb_reset_mac_len ( skb ) ; NAPI_GRO_CB ( skb ) -> same_flow = 0 ; NAPI_GRO_CB ( skb ) -> flush = 0 ; NAPI_GRO_CB ( skb ) -> free = 0 ; <S2SV_StartBug> NAPI_GRO_CB ( skb ) -> udp_mark = 0 ; <S2SV_EndBug> NAPI_GRO_CB ( skb ) -> gro_remcsum_start = 0 ; switch ( skb -> ip_summed ) { case CHECKSUM_COMPLETE : NAPI_GRO_CB ( skb ) -> csum = skb -> csum ; NAPI_GRO_CB ( skb ) -> csum_valid = 1 ; NAPI_GRO_CB ( skb ) -> csum_cnt = 0 ; break ; case CHECKSUM_UNNECESSARY : NAPI_GRO_CB ( skb ) -> csum_cnt = skb -> csum_level + 1 ; NAPI_GRO_CB ( skb ) -> csum_valid = 0 ; break ; default : NAPI_GRO_CB ( skb ) -> csum_cnt = 0 ; NAPI_GRO_CB ( skb ) -> csum_valid = 0 ; } pp = ptype -> callbacks . gro_receive ( & napi -> gro_list , skb ) ; break ; } rcu_read_unlock ( ) ; if ( & ptype -> list == head ) goto normal ; same_flow = NAPI_GRO_CB ( skb ) -> same_flow ; ret = NAPI_GRO_CB ( skb ) -> free ? GRO_MERGED_FREE : GRO_MERGED ; if ( pp ) { struct sk_buff * nskb = * pp ; * pp = nskb -> next ; nskb -> next = NULL ; napi_gro_complete ( nskb ) ; napi -> gro_count -- ; } if ( same_flow ) goto ok ; if ( NAPI_GRO_CB ( skb ) -> flush ) goto normal ; if ( unlikely ( napi -> gro_count >= MAX_GRO_SKBS ) ) { struct sk_buff * nskb = napi -> gro_list ; while ( nskb -> next ) { pp = & nskb -> next ; nskb = * pp ; } * pp = NULL ; nskb -> next = NULL ; napi_gro_complete ( nskb ) ; } else { napi -> gro_count ++ ; } NAPI_GRO_CB ( skb ) -> count = 1 ; NAPI_GRO_CB ( skb ) -> age = jiffies ; NAPI_GRO_CB ( skb ) -> last = skb ; skb_shinfo ( skb ) -> gso_size = skb_gro_len ( skb ) ; skb -> next = napi -> gro_list ; napi -> gro_list = skb ; ret = GRO_HELD ; pull : grow = skb_gro_offset ( skb ) - skb_headlen ( skb ) ; if ( grow > 0 ) gro_pull_from_frag0 ( skb , grow ) ; ok : return ret ; normal : ret = GRO_NORMAL ; goto pull ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) -> encap_mark <S2SV_ModEnd> = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 void cJSON_AddItemToObject ( cJSON * object , const char * string , cJSON * item ) { if ( ! item ) return ; if ( item -> string ) cJSON_free ( item -> string ) ; item -> string = cJSON_strdup ( string ) ; cJSON_AddItemToArray ( object , item ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 void perf_pmu_migrate_context ( struct pmu * pmu , int src_cpu , int dst_cpu ) { struct perf_event_context * src_ctx ; struct perf_event_context * dst_ctx ; struct perf_event * event , * tmp ; LIST_HEAD ( events ) ; src_ctx = & per_cpu_ptr ( pmu -> pmu_cpu_context , src_cpu ) -> ctx ; dst_ctx = & per_cpu_ptr ( pmu -> pmu_cpu_context , dst_cpu ) -> ctx ; <S2SV_StartBug> mutex_lock ( & src_ctx -> mutex ) ; <S2SV_EndBug> list_for_each_entry_safe ( event , tmp , & src_ctx -> event_list , event_entry ) { perf_remove_from_context ( event , false ) ; unaccount_event_cpu ( event , src_cpu ) ; put_ctx ( src_ctx ) ; list_add ( & event -> migrate_entry , & events ) ; } <S2SV_StartBug> mutex_unlock ( & src_ctx -> mutex ) ; <S2SV_EndBug> synchronize_rcu ( ) ; mutex_lock ( & dst_ctx -> mutex ) ; list_for_each_entry_safe ( event , tmp , & events , migrate_entry ) { list_del ( & event -> migrate_entry ) ; if ( event -> state >= PERF_EVENT_STATE_OFF ) event -> state = PERF_EVENT_STATE_INACTIVE ; account_event_cpu ( event , dst_cpu ) ; perf_install_in_context ( dst_ctx , event , dst_cpu ) ; get_ctx ( dst_ctx ) ; } mutex_unlock ( & dst_ctx -> mutex ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ctx ; mutex_lock_double ( & src_ctx -> mutex , & dst_ctx <S2SV_ModEnd> -> mutex ) <S2SV_ModStart> ) ; } synchronize_rcu ( <S2SV_ModEnd> ) ; list_for_each_entry_safe <S2SV_ModStart> mutex ) ; mutex_unlock ( & src_ctx -> mutex ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 struct bpf_prog * bpf_prog_get ( u32 ufd ) { struct fd f = fdget ( ufd ) ; struct bpf_prog * prog ; prog = __bpf_prog_get ( f ) ; if ( IS_ERR ( prog ) ) return prog ; <S2SV_StartBug> atomic_inc ( & prog -> aux -> refcnt ) ; <S2SV_EndBug> fdput ( f ) ; return prog ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return prog ; prog = bpf_prog_inc ( prog <S2SV_ModEnd> ) ; fdput\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static INLINE void write_buffer_8x8 ( int16_t * output , __m128i * res , int stride ) { <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 0 * stride ) , res [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 1 * stride ) , res [ 1 ] ) ; <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 2 * stride ) , res [ 2 ] ) ; <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 3 * stride ) , res [ 3 ] ) ; <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 4 * stride ) , res [ 4 ] ) ; <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 5 * stride ) , res [ 5 ] ) ; <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 6 * stride ) , res [ 6 ] ) ; <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 7 * stride ) , res [ 7 ] ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void write_buffer_8x8 ( tran_low_t <S2SV_ModEnd> * output , <S2SV_ModStart> stride ) { store_output ( & res [ 0 ] , <S2SV_ModEnd> ( output + <S2SV_ModStart> * stride ) ) ; store_output ( & res [ 1 ] , <S2SV_ModEnd> ( output + <S2SV_ModStart> * stride ) ) ; store_output ( & res [ 2 ] , <S2SV_ModEnd> ( output + <S2SV_ModStart> * stride ) ) ; store_output ( & res [ 3 ] , <S2SV_ModEnd> ( output + <S2SV_ModStart> * stride ) ) ; store_output ( & res [ 4 ] , <S2SV_ModEnd> ( output + <S2SV_ModStart> * stride ) ) ; store_output ( & res [ 5 ] , <S2SV_ModEnd> ( output + <S2SV_ModStart> * stride ) ) ; store_output ( & res [ 6 ] , <S2SV_ModEnd> ( output + <S2SV_ModStart> * stride ) ) ; store_output ( & res [ 7 ] , <S2SV_ModEnd> ( output + <S2SV_ModStart> * stride ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 long follow_hugetlb_page ( struct mm_struct * mm , struct vm_area_struct * vma , struct page * * pages , struct vm_area_struct * * vmas , unsigned long * position , unsigned long * nr_pages , long i , unsigned int flags , int * nonblocking ) { unsigned long pfn_offset ; unsigned long vaddr = * position ; unsigned long remainder = * nr_pages ; struct hstate * h = hstate_vma ( vma ) ; int err = - EFAULT ; while ( vaddr < vma -> vm_end && remainder ) { pte_t * pte ; spinlock_t * ptl = NULL ; int absent ; struct page * page ; if ( fatal_signal_pending ( current ) ) { remainder = 0 ; break ; } pte = huge_pte_offset ( mm , vaddr & huge_page_mask ( h ) , huge_page_size ( h ) ) ; if ( pte ) ptl = huge_pte_lock ( h , mm , pte ) ; absent = ! pte || huge_pte_none ( huge_ptep_get ( pte ) ) ; if ( absent && ( flags & FOLL_DUMP ) && ! hugetlbfs_pagecache_present ( h , vma , vaddr ) ) { if ( pte ) spin_unlock ( ptl ) ; remainder = 0 ; break ; } if ( absent || is_swap_pte ( huge_ptep_get ( pte ) ) || ( ( flags & FOLL_WRITE ) && ! huge_pte_write ( huge_ptep_get ( pte ) ) ) ) { vm_fault_t ret ; unsigned int fault_flags = 0 ; if ( pte ) spin_unlock ( ptl ) ; if ( flags & FOLL_WRITE ) fault_flags |= FAULT_FLAG_WRITE ; if ( nonblocking ) fault_flags |= FAULT_FLAG_ALLOW_RETRY ; if ( flags & FOLL_NOWAIT ) fault_flags |= FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_RETRY_NOWAIT ; if ( flags & FOLL_TRIED ) { VM_WARN_ON_ONCE ( fault_flags & FAULT_FLAG_ALLOW_RETRY ) ; fault_flags |= FAULT_FLAG_TRIED ; } ret = hugetlb_fault ( mm , vma , vaddr , fault_flags ) ; if ( ret & VM_FAULT_ERROR ) { err = vm_fault_to_errno ( ret , flags ) ; remainder = 0 ; break ; } if ( ret & VM_FAULT_RETRY ) { if ( nonblocking && ! ( fault_flags & FAULT_FLAG_RETRY_NOWAIT ) ) * nonblocking = 0 ; * nr_pages = 0 ; return i ; } continue ; } pfn_offset = ( vaddr & ~ huge_page_mask ( h ) ) >> PAGE_SHIFT ; page = pte_page ( huge_ptep_get ( pte ) ) ; <S2SV_StartBug> same_page : <S2SV_EndBug> if ( pages ) { pages [ i ] = mem_map_offset ( page , pfn_offset ) ; get_page ( pages [ i ] ) ; } if ( vmas ) vmas [ i ] = vma ; vaddr += PAGE_SIZE ; ++ pfn_offset ; -- remainder ; ++ i ; if ( vaddr < vma -> vm_end && remainder && pfn_offset < pages_per_huge_page ( h ) ) { goto same_page ; } spin_unlock ( ptl ) ; } * nr_pages = remainder ; * position = vaddr ; return i ? i : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; if ( unlikely ( page_count ( page ) <= 0 ) ) { if ( pages ) { spin_unlock ( ptl ) ; remainder = 0 ; err = - ENOMEM ; break ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6387\n\n```\nCWE-125 static int dex_loadcode ( RBinFile * arch , RBinDexObj * bin ) { struct r_bin_t * rbin = arch -> rbin ; int i ; int * methods = NULL ; int sym_count = 0 ; if ( ! bin || bin -> methods_list ) { return false ; } bin -> code_from = UT64_MAX ; bin -> code_to = 0 ; bin -> methods_list = r_list_newf ( ( RListFree ) free ) ; if ( ! bin -> methods_list ) { return false ; } bin -> imports_list = r_list_newf ( ( RListFree ) free ) ; if ( ! bin -> imports_list ) { r_list_free ( bin -> methods_list ) ; return false ; } bin -> classes_list = r_list_newf ( ( RListFree ) __r_bin_class_free ) ; if ( ! bin -> classes_list ) { r_list_free ( bin -> methods_list ) ; r_list_free ( bin -> imports_list ) ; return false ; } if ( bin -> header . method_size > bin -> size ) { bin -> header . method_size = 0 ; return false ; } bin -> header . method_size = R_MIN ( bin -> header . method_size , bin -> size ) ; bin -> header . class_size = R_MIN ( bin -> header . class_size , bin -> size ) ; bin -> header . strings_size = R_MIN ( bin -> header . strings_size , bin -> size ) ; if ( bin -> header . strings_size > bin -> size ) { eprintf ( \"Invalid<S2SV_blank>strings<S2SV_blank>size\\\\n\" ) ; return false ; } if ( bin -> classes ) { ut64 amount = sizeof ( int ) * bin -> header . method_size ; if ( amount > UT32_MAX || amount < bin -> header . method_size ) { return false ; } methods = calloc ( 1 , amount + 1 ) ; for ( i = 0 ; i < bin -> header . class_size ; i ++ ) { char * super_name , * class_name ; struct dex_class_t * c = & bin -> classes [ i ] ; class_name = dex_class_name ( bin , c ) ; super_name = dex_class_super_name ( bin , c ) ; if ( dexdump ) { rbin -> cb_printf ( \"Class<S2SV_blank>#%d<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>-\\\\n\" , i ) ; } parse_class ( arch , bin , c , i , methods , & sym_count ) ; free ( class_name ) ; free ( super_name ) ; } } if ( methods ) { int import_count = 0 ; int sym_count = bin -> methods_list -> length ; for ( i = 0 ; i < bin -> header . method_size ; i ++ ) { int len = 0 ; if ( methods [ i ] ) { continue ; } <S2SV_StartBug> if ( bin -> methods [ i ] . class_id > bin -> header . types_size - 1 ) { <S2SV_EndBug> continue ; } if ( is_class_idx_in_code_classes ( bin , bin -> methods [ i ] . class_id ) ) { continue ; } char * class_name = getstr ( bin , bin -> types [ bin -> methods [ i ] . class_id ] . descriptor_id ) ; if ( ! class_name ) { free ( class_name ) ; continue ; } len = strlen ( class_name ) ; if ( len < 1 ) { continue ; } class_name [ len - 1 ] = 0 ; char * method_name = dex_method_name ( bin , i ) ; char * signature = dex_method_signature ( bin , i ) ; if ( method_name && * method_name ) { RBinImport * imp = R_NEW0 ( RBinImport ) ; imp -> name = r_str_newf ( \"%s.method.%s%s\" , class_name , method_name , signature ) ; imp -> type = r_str_const ( \"FUNC\" ) ; imp -> bind = r_str_const ( \"NONE\" ) ; imp -> ordinal = import_count ++ ; r_list_append ( bin -> imports_list , imp ) ; RBinSymbol * sym = R_NEW0 ( RBinSymbol ) ; sym -> name = r_str_newf ( \"imp.%s\" , imp -> name ) ; sym -> type = r_str_const ( \"FUNC\" ) ; sym -> bind = r_str_const ( \"NONE\" ) ; sym -> paddr = sym -> vaddr = bin -> b -> base + bin -> header . method_offset + ( sizeof ( struct dex_method_t ) * i ) ; sym -> ordinal = sym_count ++ ; r_list_append ( bin -> methods_list , sym ) ; sdb_num_set ( mdb , sdb_fmt ( 0 , \"method.%d\" , i ) , sym -> paddr , 0 ) ; } free ( method_name ) ; free ( signature ) ; free ( class_name ) ; } free ( methods ) ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> header . types_size <S2SV_ModEnd> ) { continue\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17568\n\n```\nCWE-190 int rpc_pack ( rpc_pkg * pkg , void * * data , uint32_t * size ) { static void * send_buf ; static size_t send_buf_size ; <S2SV_StartBug> uint32_t pkg_size = RPC_PKG_HEAD_SIZE + pkg -> ext_size + pkg -> body_size ; <S2SV_EndBug> if ( send_buf_size < pkg_size ) { if ( send_buf ) free ( send_buf ) ; send_buf_size = pkg_size * 2 ; send_buf = malloc ( send_buf_size ) ; <S2SV_StartBug> assert ( send_buf != NULL ) ; <S2SV_EndBug> } memcpy ( send_buf , pkg , RPC_PKG_HEAD_SIZE ) ; if ( pkg -> ext_size ) memcpy ( send_buf + RPC_PKG_HEAD_SIZE , pkg -> ext , pkg -> ext_size ) ; if ( pkg -> body_size ) memcpy ( send_buf + RPC_PKG_HEAD_SIZE + pkg -> ext_size , pkg -> body , pkg -> body_size ) ; pkg = send_buf ; pkg -> magic = htole32 ( RPC_PKG_MAGIC ) ; pkg -> command = htole32 ( pkg -> command ) ; pkg -> pkg_type = htole16 ( pkg -> pkg_type ) ; pkg -> result = htole32 ( pkg -> result ) ; pkg -> sequence = htole32 ( pkg -> sequence ) ; pkg -> req_id = htole64 ( pkg -> req_id ) ; pkg -> body_size = htole32 ( pkg -> body_size ) ; pkg -> ext_size = htole16 ( pkg -> ext_size ) ; pkg -> crc32 = 0 ; pkg -> crc32 = htole32 ( generate_crc32c ( send_buf , pkg_size ) ) ; * data = send_buf ; * size = pkg_size ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; uint32_t pkg_size ; if ( pkg -> body_size > RPC_PKG_MAX_BODY_SIZE ) { return - 1 ; } pkg_size <S2SV_ModStart> send_buf_size ) ; if ( send_buf == NULL ) { return - 1 ; } <S2SV_ModEnd> } memcpy (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11046\n\n```\nCWE-119 BOOL update_recv ( rdpUpdate * update , wStream * s ) { BOOL rc = FALSE ; UINT16 updateType ; rdpContext * context = update -> context ; if ( Stream_GetRemainingLength ( s ) < 2 ) { WLog_ERR ( TAG , \"Stream_GetRemainingLength(s)<S2SV_blank><<S2SV_blank>2\" ) ; return FALSE ; } Stream_Read_UINT16 ( s , updateType ) ; WLog_Print ( update -> log , WLOG_TRACE , \"%s<S2SV_blank>Update<S2SV_blank>Data<S2SV_blank>PDU\" , UPDATE_TYPE_STRINGS [ updateType ] ) ; if ( ! update_begin_paint ( update ) ) goto fail ; switch ( updateType ) { case UPDATE_TYPE_ORDERS : rc = update_recv_orders ( update , s ) ; break ; case UPDATE_TYPE_BITMAP : { BITMAP_UPDATE * bitmap_update = update_read_bitmap_update ( update , s ) ; if ( ! bitmap_update ) { WLog_ERR ( TAG , \"UPDATE_TYPE_BITMAP<S2SV_blank>-<S2SV_blank>update_read_bitmap_update()<S2SV_blank>failed\" ) ; goto fail ; } rc = IFCALLRESULT ( FALSE , update -> BitmapUpdate , context , bitmap_update ) ; free_bitmap_update ( update -> context , bitmap_update ) ; } break ; case UPDATE_TYPE_PALETTE : { PALETTE_UPDATE * palette_update = update_read_palette ( update , s ) ; if ( ! palette_update ) { WLog_ERR ( TAG , \"UPDATE_TYPE_PALETTE<S2SV_blank>-<S2SV_blank>update_read_palette()<S2SV_blank>failed\" ) ; goto fail ; } rc = IFCALLRESULT ( FALSE , update -> Palette , context , palette_update ) ; free_palette_update ( context , palette_update ) ; } break ; case UPDATE_TYPE_SYNCHRONIZE : <S2SV_StartBug> update_read_synchronize ( update , s ) ; <S2SV_EndBug> rc = IFCALLRESULT ( TRUE , update -> Synchronize , context ) ; break ; default : break ; } fail : if ( ! update_end_paint ( update ) ) rc = FALSE ; if ( ! rc ) { WLog_ERR ( TAG , \"UPDATE_TYPE<S2SV_blank>%s<S2SV_blank>[%\" PRIu16 \"]<S2SV_blank>failed\" , update_type_to_string ( updateType ) , updateType ) ; return FALSE ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case UPDATE_TYPE_SYNCHRONIZE : if ( ! <S2SV_ModStart> , s ) ) goto fail\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext4_xattr_block_set ( handle_t * handle , struct inode * inode , struct ext4_xattr_info * i , struct ext4_xattr_block_find * bs ) { struct super_block * sb = inode -> i_sb ; struct buffer_head * new_bh = NULL ; struct ext4_xattr_search * s = & bs -> s ; <S2SV_StartBug> struct mb_cache_entry * ce = NULL ; <S2SV_EndBug> int error = 0 ; <S2SV_StartBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; <S2SV_EndBug> # define header ( x ) ( ( struct ext4_xattr_header * ) ( x ) ) if ( i -> value && i -> value_len > sb -> s_blocksize ) return - ENOSPC ; if ( s -> base ) { <S2SV_StartBug> ce = mb_cache_entry_get ( ext4_mb_cache , bs -> bh -> b_bdev , <S2SV_EndBug> bs -> bh -> b_blocknr ) ; BUFFER_TRACE ( bs -> bh , \"get_write_access\" ) ; error = ext4_journal_get_write_access ( handle , bs -> bh ) ; if ( error ) goto cleanup ; lock_buffer ( bs -> bh ) ; if ( header ( s -> base ) -> h_refcount == cpu_to_le32 ( 1 ) ) { <S2SV_StartBug> if ( ce ) { <S2SV_EndBug> mb_cache_entry_free ( ce ) ; ce = NULL ; } ea_bdebug ( bs -> bh , \"modifying<S2SV_blank>in-place\" ) ; error = ext4_xattr_set_entry ( i , s ) ; if ( ! error ) { if ( ! IS_LAST_ENTRY ( s -> first ) ) ext4_xattr_rehash ( header ( s -> base ) , s -> here ) ; ext4_xattr_cache_insert ( ext4_mb_cache , bs -> bh ) ; } unlock_buffer ( bs -> bh ) ; if ( error == - EFSCORRUPTED ) goto bad_block ; if ( ! error ) error = ext4_handle_dirty_xattr_block ( handle , inode , bs -> bh ) ; if ( error ) goto cleanup ; goto inserted ; } else { int offset = ( char * ) s -> here - bs -> bh -> b_data ; unlock_buffer ( bs -> bh ) ; <S2SV_StartBug> if ( ce ) { <S2SV_EndBug> mb_cache_entry_release ( ce ) ; ce = NULL ; } ea_bdebug ( bs -> bh , \"cloning\" ) ; s -> base = kmalloc ( bs -> bh -> b_size , GFP_NOFS ) ; error = - ENOMEM ; if ( s -> base == NULL ) goto cleanup ; memcpy ( s -> base , BHDR ( bs -> bh ) , bs -> bh -> b_size ) ; s -> first = ENTRY ( header ( s -> base ) + 1 ) ; header ( s -> base ) -> h_refcount = cpu_to_le32 ( 1 ) ; s -> here = ENTRY ( s -> base + offset ) ; s -> end = s -> base + bs -> bh -> b_size ; } } else { s -> base = kzalloc ( sb -> s_blocksize , GFP_NOFS ) ; error = - ENOMEM ; if ( s -> base == NULL ) goto cleanup ; header ( s -> base ) -> h_magic = cpu_to_le32 ( EXT4_XATTR_MAGIC ) ; header ( s -> base ) -> h_blocks = cpu_to_le32 ( 1 ) ; header ( s -> base ) -> h_refcount = cpu_to_le32 ( 1 ) ; s -> first = ENTRY ( header ( s -> base ) + 1 ) ; s -> here = ENTRY ( header ( s -> base ) + 1 ) ; s -> end = s -> base + sb -> s_blocksize ; } error = ext4_xattr_set_entry ( i , s ) ; if ( error == - EFSCORRUPTED ) goto bad_block ; if ( error ) goto cleanup ; if ( ! IS_LAST_ENTRY ( s -> first ) ) ext4_xattr_rehash ( header ( s -> base ) , s -> here ) ; inserted : if ( ! IS_LAST_ENTRY ( s -> first ) ) { new_bh = ext4_xattr_cache_find ( inode , header ( s -> base ) , & ce ) ; if ( new_bh ) { if ( new_bh == bs -> bh ) ea_bdebug ( new_bh , \"keeping\" ) ; else { error = dquot_alloc_block ( inode , EXT4_C2B ( EXT4_SB ( sb ) , 1 ) ) ; if ( error ) goto cleanup ; BUFFER_TRACE ( new_bh , \"get_write_access\" ) ; error = ext4_journal_get_write_access ( handle , new_bh ) ; if ( error ) goto cleanup_dquot ; lock_buffer ( new_bh ) ; <S2SV_StartBug> le32_add_cpu ( & BHDR ( new_bh ) -> h_refcount , 1 ) ; <S2SV_EndBug> ea_bdebug ( new_bh , \"reusing;<S2SV_blank>refcount<S2SV_blank>now=%d\" , le32_to_cpu ( BHDR ( new_bh ) -> h_refcount ) ) ; unlock_buffer ( new_bh ) ; error = ext4_handle_dirty_xattr_block ( handle , inode , new_bh ) ; if ( error ) goto cleanup_dquot ; } <S2SV_StartBug> mb_cache_entry_release ( ce ) ; <S2SV_EndBug> ce = NULL ; } else if ( bs -> bh && s -> base == bs -> bh -> b_data ) { ea_bdebug ( bs -> bh , \"keeping<S2SV_blank>this<S2SV_blank>block\" ) ; new_bh = bs -> bh ; get_bh ( new_bh ) ; } else { ext4_fsblk_t goal , block ; goal = ext4_group_first_block_no ( sb , EXT4_I ( inode ) -> i_block_group ) ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) goal = goal & EXT4_MAX_BLOCK_FILE_PHYS ; block = ext4_new_meta_blocks ( handle , inode , goal , 0 , NULL , & error ) ; if ( error ) goto cleanup ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) BUG_ON ( block > EXT4_MAX_BLOCK_FILE_PHYS ) ; ea_idebug ( inode , \"creating<S2SV_blank>block<S2SV_blank>%llu\" , ( unsigned long long ) block ) ; new_bh = sb_getblk ( sb , block ) ; if ( unlikely ( ! new_bh ) ) { error = - ENOMEM ; getblk_failed : ext4_free_blocks ( handle , inode , NULL , block , 1 , EXT4_FREE_BLOCKS_METADATA ) ; goto cleanup ; } lock_buffer ( new_bh ) ; error = ext4_journal_get_create_access ( handle , new_bh ) ; if ( error ) { unlock_buffer ( new_bh ) ; error = - EIO ; goto getblk_failed ; } memcpy ( new_bh -> b_data , s -> base , new_bh -> b_size ) ; set_buffer_uptodate ( new_bh ) ; unlock_buffer ( new_bh ) ; ext4_xattr_cache_insert ( ext4_mb_cache , new_bh ) ; error = ext4_handle_dirty_xattr_block ( handle , inode , new_bh ) ; if ( error ) goto cleanup ; } } EXT4_I ( inode ) -> i_file_acl = new_bh ? new_bh -> b_blocknr : 0 ; if ( bs -> bh && bs -> bh != new_bh ) ext4_xattr_release_block ( handle , inode , bs -> bh ) ; error = 0 ; cleanup : if ( ce ) <S2SV_StartBug> mb_cache_entry_release ( ce ) ; <S2SV_EndBug> brelse ( new_bh ) ; if ( ! ( bs -> bh && s -> base == bs -> bh -> b_data ) ) kfree ( s -> base ) ; return error ; cleanup_dquot : dquot_free_block ( inode , EXT4_C2B ( EXT4_SB ( sb ) , 1 ) ) ; goto cleanup ; bad_block : EXT4_ERROR_INODE ( inode , \"bad<S2SV_blank>block<S2SV_blank>%llu\" , EXT4_I ( inode ) -> i_file_acl ) ; goto cleanup ; # undef header }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ; struct mb2_cache_entry <S2SV_ModEnd> * ce = <S2SV_ModStart> 0 ; struct mb2_cache <S2SV_ModEnd> * ext4_mb_cache = <S2SV_ModStart> base ) { <S2SV_ModEnd> BUFFER_TRACE ( bs <S2SV_ModStart> ) ) { __u32 hash = le32_to_cpu ( BHDR ( bs -> bh ) -> h_hash ) ; mb2_cache_entry_delete_block ( ext4_mb_cache , hash , bs -> bh -> b_blocknr ) ; <S2SV_ModEnd> ea_bdebug ( bs <S2SV_ModStart> bh ) ; <S2SV_ModEnd> ea_bdebug ( bs <S2SV_ModStart> new_bh ) ; if ( hlist_bl_unhashed ( & ce -> e_hash_list ) ) { unlock_buffer ( new_bh ) ; dquot_free_block ( inode , EXT4_C2B ( EXT4_SB ( sb ) , 1 ) ) ; brelse ( new_bh ) ; mb2_cache_entry_put ( ext4_mb_cache , ce ) ; ce = NULL ; new_bh = NULL ; goto inserted ; } <S2SV_ModStart> cleanup_dquot ; } mb2_cache_entry_touch ( ext4_mb_cache , ce ) ; mb2_cache_entry_put ( ext4_mb_cache , <S2SV_ModEnd> ce ) ; <S2SV_ModStart> ( ce ) mb2_cache_entry_put ( ext4_mb_cache , <S2SV_ModEnd> ce ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3571\n\n```\nCWE-000 int dtls1_get_record ( SSL * s ) { int ssl_major , ssl_minor ; int i , n ; SSL3_RECORD * rr ; unsigned char * p = NULL ; unsigned short version ; DTLS1_BITMAP * bitmap ; unsigned int is_next_epoch ; rr = & ( s -> s3 -> rrec ) ; dtls1_process_buffered_records ( s ) ; if ( dtls1_get_processed_record ( s ) ) return 1 ; again : if ( ( s -> rstate != SSL_ST_READ_BODY ) || ( s -> packet_length < DTLS1_RT_HEADER_LENGTH ) ) { n = ssl3_read_n ( s , DTLS1_RT_HEADER_LENGTH , s -> s3 -> rbuf . len , 0 ) ; if ( n <= 0 ) return ( n ) ; if ( s -> packet_length != DTLS1_RT_HEADER_LENGTH ) { s -> packet_length = 0 ; goto again ; } s -> rstate = SSL_ST_READ_BODY ; p = s -> packet ; if ( s -> msg_callback ) s -> msg_callback ( 0 , 0 , SSL3_RT_HEADER , p , DTLS1_RT_HEADER_LENGTH , s , s -> msg_callback_arg ) ; rr -> type = * ( p ++ ) ; ssl_major = * ( p ++ ) ; ssl_minor = * ( p ++ ) ; version = ( ssl_major << 8 ) | ssl_minor ; n2s ( p , rr -> epoch ) ; memcpy ( & ( s -> s3 -> read_sequence [ 2 ] ) , p , 6 ) ; p += 6 ; n2s ( p , rr -> length ) ; if ( ! s -> first_packet ) { if ( version != s -> version ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( ( version & 0xff00 ) != ( s -> version & 0xff00 ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( rr -> length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( rr -> length > s -> packet_length - DTLS1_RT_HEADER_LENGTH ) { i = rr -> length ; n = ssl3_read_n ( s , i , i , 1 ) ; if ( n != i ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } s -> rstate = SSL_ST_READ_HEADER ; bitmap = dtls1_get_bitmap ( s , rr , & is_next_epoch ) ; if ( bitmap == NULL ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP if ( ! BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) ) { # endif if ( ! ( s -> d1 -> listen && rr -> type == SSL3_RT_HANDSHAKE && <S2SV_StartBug> * p == SSL3_MT_CLIENT_HELLO ) && <S2SV_EndBug> ! dtls1_record_replay_check ( s , bitmap ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP } # endif if ( rr -> length == 0 ) goto again ; if ( is_next_epoch ) { if ( ( SSL_in_init ( s ) || s -> in_handshake ) && ! s -> d1 -> listen ) { dtls1_buffer_record ( s , & ( s -> d1 -> unprocessed_rcds ) , rr -> seq_num ) ; } rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( ! dtls1_process_record ( s ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == SSL3_RT_HANDSHAKE && s -> packet_length > DTLS1_RT_HEADER_LENGTH && s -> packet [ DTLS1_RT_HEADER_LENGTH ] <S2SV_ModEnd> == SSL3_MT_CLIENT_HELLO )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13053\n\n```\nCWE-125 static int decode_rt_routing_info ( netdissect_options * ndo , const u_char * pptr , char * buf , u_int buflen ) { uint8_t route_target [ 8 ] ; u_int plen ; <S2SV_StartBug> ND_TCHECK ( pptr [ 0 ] ) ; <S2SV_EndBug> plen = pptr [ 0 ] ; if ( 0 == plen ) { snprintf ( buf , buflen , \"default<S2SV_blank>route<S2SV_blank>target\" ) ; return 1 ; } if ( 32 > plen ) return - 1 ; <S2SV_StartBug> plen -= 32 ; <S2SV_EndBug> if ( 64 < plen ) return - 1 ; memset ( & route_target , 0 , sizeof ( route_target ) ) ; <S2SV_StartBug> ND_TCHECK2 ( pptr [ 1 ] , ( plen + 7 ) / 8 ) ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & route_target , & pptr [ 1 ] , ( plen + 7 ) / 8 ) ; <S2SV_EndBug> if ( plen % 8 ) { ( ( u_char * ) & route_target ) [ ( plen + 7 ) / 8 - 1 ] &= ( ( 0xff00 >> ( plen % 8 ) ) & 0xff ) ; } snprintf ( buf , buflen , \"origin<S2SV_blank>AS:<S2SV_blank>%s,<S2SV_blank>route<S2SV_blank>target<S2SV_blank>%s\" , <S2SV_StartBug> as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( pptr + 1 ) ) , <S2SV_EndBug> bgp_vpn_rd_print ( ndo , ( u_char * ) & route_target ) ) ; return 5 + ( plen + 7 ) / 8 ; trunc : return - 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_int plen ; char asbuf [ sizeof ( astostr ) ] ; <S2SV_ModStart> - 1 ; ND_TCHECK_32BITS ( pptr + 1 ) ; as_printf ( ndo , asbuf , sizeof ( asbuf ) , EXTRACT_32BITS ( pptr + 1 ) ) ; <S2SV_ModStart> ( pptr [ 5 <S2SV_ModEnd> ] , ( <S2SV_ModStart> & pptr [ 5 <S2SV_ModEnd> ] , ( <S2SV_ModStart> , \"origin<S2SV_blank>AS:<S2SV_blank>%s,<S2SV_blank>route<S2SV_blank>target<S2SV_blank>%s\" , asbuf <S2SV_ModEnd> , bgp_vpn_rd_print (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27673\n\n```\nCWE-400 <S2SV_StartBug> static void consume_one_event ( unsigned cpu , <S2SV_EndBug> struct evtchn_fifo_control_block * control_block , <S2SV_StartBug> unsigned priority , unsigned long * ready , <S2SV_EndBug> bool drop ) { struct evtchn_fifo_queue * q = & per_cpu ( cpu_queue , cpu ) ; uint32_t head ; evtchn_port_t port ; event_word_t * word ; head = q -> head [ priority ] ; if ( head == 0 ) { virt_rmb ( ) ; head = control_block -> head [ priority ] ; } port = head ; word = event_word_from_port ( port ) ; head = clear_linked ( word ) ; if ( head == 0 ) clear_bit ( priority , ready ) ; if ( evtchn_fifo_is_pending ( port ) && ! evtchn_fifo_is_masked ( port ) ) { <S2SV_StartBug> if ( unlikely ( drop ) ) <S2SV_EndBug> pr_warn ( \"Dropping<S2SV_blank>pending<S2SV_blank>event<S2SV_blank>for<S2SV_blank>port<S2SV_blank>%u\\\\n\" , port ) ; else <S2SV_StartBug> handle_irq_for_port ( port ) ; <S2SV_EndBug> } q -> head [ priority ] = head ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( unsigned cpu , struct evtchn_loop_ctrl * ctrl <S2SV_ModStart> long * ready <S2SV_ModEnd> ) { struct <S2SV_ModStart> ( unlikely ( ! ctrl <S2SV_ModEnd> ) ) pr_warn <S2SV_ModStart> handle_irq_for_port ( port , ctrl\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9394\n\n```\nCWE-20 static int jpc_siz_getparms ( jpc_ms_t * ms , jpc_cstate_t * cstate , jas_stream_t * in ) { jpc_siz_t * siz = & ms -> parms . siz ; unsigned int i ; uint_fast8_t tmp ; <S2SV_StartBug> cstate = 0 ; <S2SV_EndBug> if ( jpc_getuint16 ( in , & siz -> caps ) || jpc_getuint32 ( in , & siz -> width ) || jpc_getuint32 ( in , & siz -> height ) || jpc_getuint32 ( in , & siz -> xoff ) || jpc_getuint32 ( in , & siz -> yoff ) || jpc_getuint32 ( in , & siz -> tilewidth ) || jpc_getuint32 ( in , & siz -> tileheight ) || jpc_getuint32 ( in , & siz -> tilexoff ) || jpc_getuint32 ( in , & siz -> tileyoff ) || jpc_getuint16 ( in , & siz -> numcomps ) ) { <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } <S2SV_StartBug> if ( ! siz -> width || ! siz -> height || ! siz -> tilewidth || <S2SV_EndBug> ! siz -> tileheight || ! siz -> numcomps || siz -> numcomps > 16384 ) { return - 1 ; } if ( siz -> tilexoff >= siz -> width || siz -> tileyoff >= siz -> height ) { jas_eprintf ( \"all<S2SV_blank>tiles<S2SV_blank>are<S2SV_blank>outside<S2SV_blank>the<S2SV_blank>image<S2SV_blank>area\\\\n\" ) ; return - 1 ; } if ( ! ( siz -> comps = jas_alloc2 ( siz -> numcomps , sizeof ( jpc_sizcomp_t ) ) ) ) { return - 1 ; } for ( i = 0 ; i < siz -> numcomps ; ++ i ) { if ( jpc_getuint8 ( in , & tmp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . hsamp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . vsamp ) ) { jas_free ( siz -> comps ) ; return - 1 ; } if ( siz -> comps [ i ] . hsamp == 0 || siz -> comps [ i ] . hsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>XRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . hsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; } if ( siz -> comps [ i ] . vsamp == 0 || siz -> comps [ i ] . vsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>YRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . vsamp ) ; jas_free ( siz -> comps ) ; return - 1 ; } siz -> comps [ i ] . sgnd = ( tmp >> 7 ) & 1 ; siz -> comps [ i ] . prec = ( tmp & 0x7f ) + 1 ; } if ( jas_stream_eof ( in ) ) { jas_free ( siz -> comps ) ; return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint_fast8_t tmp ; siz -> comps = 0 ; <S2SV_ModStart> ) ) { goto error ; } if ( ! siz -> width || ! siz -> height ) { jas_eprintf ( \"reference<S2SV_blank>grid<S2SV_blank>cannot<S2SV_blank>have<S2SV_blank>zero<S2SV_blank>area\\\\n\" ) ; goto error ; } if ( ! siz -> tilewidth || ! siz -> tileheight ) { jas_eprintf ( \"tile<S2SV_blank>cannot<S2SV_blank>have<S2SV_blank>zero<S2SV_blank>area\\\\n\" ) ; goto error ; } if ( ! siz -> numcomps || siz -> numcomps > 16384 ) { jas_eprintf ( \"number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>not<S2SV_blank>in<S2SV_blank>permissible<S2SV_blank>range\\\\n\" ) ; goto error ; } if ( siz -> xoff >= siz -> width ) { jas_eprintf ( \"XOsiz<S2SV_blank>not<S2SV_blank>in<S2SV_blank>permissible<S2SV_blank>range\\\\n\" ) ; goto error ; } if ( siz -> yoff >= siz -> height ) { jas_eprintf ( \"YOsiz<S2SV_blank>not<S2SV_blank>in<S2SV_blank>permissible<S2SV_blank>range\\\\n\" ) ; goto error ; } if ( siz -> tilexoff > siz -> xoff || siz -> tilexoff + siz -> tilewidth <= siz -> xoff ) { jas_eprintf ( \"XTOsiz<S2SV_blank>not<S2SV_blank>in<S2SV_blank>permissible<S2SV_blank>range\\\\n\" ) ; goto error ; } if ( siz -> tileyoff > siz -> yoff || siz -> tileyoff + siz -> tileheight <= siz -> yoff ) { jas_eprintf ( \"YTOsiz<S2SV_blank>not<S2SV_blank>in<S2SV_blank>permissible<S2SV_blank>range\\\\n\" ) ; goto error ; } if ( ! ( siz -> comps = jas_alloc2 ( siz -> numcomps , sizeof ( jpc_sizcomp_t ) ) ) ) { goto error ; } for ( i = 0 ; i < siz -> numcomps ; ++ i ) { if ( jpc_getuint8 ( in , & tmp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . hsamp ) || jpc_getuint8 ( in , & siz -> comps [ i ] . vsamp ) ) { goto error ; } if ( siz -> comps [ i ] . hsamp == 0 || siz -> comps [ i ] . hsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>XRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . hsamp ) ; goto error ; } if ( siz -> comps [ i ] . vsamp == 0 || siz -> comps [ i ] . vsamp > 255 ) { jas_eprintf ( \"invalid<S2SV_blank>YRsiz<S2SV_blank>value<S2SV_blank>%d\\\\n\" , siz -> comps [ i ] . vsamp ) ; goto error ; } siz -> comps [ i ] . sgnd = ( tmp >> 7 ) & 1 ; siz -> comps [ i ] . prec = ( tmp & 0x7f ) + 1 ; } if ( jas_stream_eof ( in ) ) { goto error ; } return 0 ; error : if ( siz -> comps ) { jas_free ( siz -> comps ) ; } <S2SV_ModStart> 1 ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3688\n\n```\nCWE-399 struct sctp_chunk * sctp_inq_pop ( struct sctp_inq * queue ) { struct sctp_chunk * chunk ; sctp_chunkhdr_t * ch = NULL ; if ( ( chunk = queue -> in_progress ) ) { if ( chunk -> singleton || chunk -> end_of_packet || chunk -> pdiscard ) { sctp_chunk_free ( chunk ) ; chunk = queue -> in_progress = NULL ; } else { ch = ( sctp_chunkhdr_t * ) chunk -> chunk_end ; skb_pull ( chunk -> skb , chunk -> chunk_end - chunk -> skb -> data ) ; <S2SV_StartBug> if ( skb_headlen ( chunk -> skb ) < sizeof ( sctp_chunkhdr_t ) ) { <S2SV_EndBug> sctp_chunk_free ( chunk ) ; chunk = queue -> in_progress = NULL ; } } } if ( ! chunk ) { struct list_head * entry ; if ( list_empty ( & queue -> in_chunk_list ) ) return NULL ; entry = queue -> in_chunk_list . next ; chunk = queue -> in_progress = list_entry ( entry , struct sctp_chunk , list ) ; list_del_init ( entry ) ; chunk -> singleton = 1 ; ch = ( sctp_chunkhdr_t * ) chunk -> skb -> data ; chunk -> data_accepted = 0 ; } chunk -> chunk_hdr = ch ; chunk -> chunk_end = ( ( __u8 * ) ch ) + WORD_ROUND ( ntohs ( ch -> length ) ) ; if ( unlikely ( skb_is_nonlinear ( chunk -> skb ) ) ) { if ( chunk -> chunk_end > skb_tail_pointer ( chunk -> skb ) ) chunk -> chunk_end = skb_tail_pointer ( chunk -> skb ) ; } skb_pull ( chunk -> skb , sizeof ( sctp_chunkhdr_t ) ) ; chunk -> subh . v = NULL ; <S2SV_StartBug> if ( chunk -> chunk_end < skb_tail_pointer ( chunk -> skb ) ) { <S2SV_EndBug> chunk -> singleton = 0 ; } else if ( chunk -> chunk_end > skb_tail_pointer ( chunk -> skb ) ) { <S2SV_StartBug> sctp_chunk_free ( chunk ) ; <S2SV_EndBug> chunk = queue -> in_progress = NULL ; return NULL ; } else { chunk -> end_of_packet = 1 ; } pr_debug ( \"+++sctp_inq_pop+++<S2SV_blank>chunk:%p[%s],<S2SV_blank>length:%d,<S2SV_blank>skb->len:%d\\\\n\" , chunk , sctp_cname ( SCTP_ST_CHUNK ( chunk -> chunk_hdr -> type ) ) , ntohs ( chunk -> chunk_hdr -> length ) , chunk -> skb -> len ) ; return chunk ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) ; <S2SV_ModEnd> } } if <S2SV_ModStart> chunk -> chunk_end + sizeof ( sctp_chunkhdr_t ) <S2SV_ModStart> ) ) { chunk -> pdiscard = 1 ; chunk -> chunk_end = skb_tail_pointer ( chunk -> skb ) ; } else { chunk -> end_of_packet = 1 ; } pr_debug ( \"+++sctp_inq_pop+++<S2SV_blank>chunk:%p[%s],<S2SV_blank>length:%d,<S2SV_blank>skb->len:%d\\\\n\" , chunk , sctp_cname ( SCTP_ST_CHUNK ( chunk -> chunk_hdr -> type ) ) , ntohs ( chunk -> chunk_hdr -> length ) , chunk -> skb -> len ) ; return <S2SV_ModEnd> chunk ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8323\n\n```\nCWE-20 int handle ( int s , unsigned char * data , int len , struct sockaddr_in * s_in ) { char buf [ 2048 ] ; unsigned short * cmd = ( unsigned short * ) buf ; int plen ; struct in_addr * addr = & s_in -> sin_addr ; unsigned short * pid = ( unsigned short * ) data ; if ( len == S_HELLO_LEN && memcmp ( data , \"sorbo\" , 5 ) == 0 ) { unsigned short * id = ( unsigned short * ) ( data + 5 ) ; int x = 2 + 4 + 2 ; * cmd = htons ( S_CMD_INET_CHECK ) ; memcpy ( cmd + 1 , addr , 4 ) ; memcpy ( cmd + 1 + 2 , id , 2 ) ; printf ( \"Inet<S2SV_blank>check<S2SV_blank>by<S2SV_blank>%s<S2SV_blank>%d\\\\n\" , inet_ntoa ( * addr ) , ntohs ( * id ) ) ; if ( send ( s , buf , x , 0 ) != x ) return 1 ; return 0 ; } * cmd ++ = htons ( S_CMD_PACKET ) ; * cmd ++ = * pid ; plen = len - 2 ; <S2SV_StartBug> last_id = ntohs ( * pid ) ; <S2SV_EndBug> if ( last_id > 20000 ) wrap = 1 ; if ( wrap && last_id < 100 ) { wrap = 0 ; memset ( ids , 0 , sizeof ( ids ) ) ; } printf ( \"Got<S2SV_blank>packet<S2SV_blank>%d<S2SV_blank>%d\" , last_id , plen ) ; if ( is_dup ( last_id ) ) { printf ( \"<S2SV_blank>(DUP)\\\\n\" ) ; return 0 ; } printf ( \"\\\\n\" ) ; * cmd ++ = htons ( plen ) ; memcpy ( cmd , data + 2 , plen ) ; plen += 2 + 2 + 2 ; assert ( plen <= ( int ) sizeof ( buf ) ) ; if ( send ( s , buf , plen , 0 ) != plen ) return 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - 2 ; if ( plen < 0 ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3501\n\n```\nCWE-119 int squidclamav_check_preview_handler ( char * preview_data , int preview_data_len , ci_request_t * req ) { ci_headers_list_t * req_header ; struct http_info httpinf ; av_req_data_t * data = ci_service_data ( req ) ; char * clientip ; struct hostent * clientname ; unsigned long ip ; char * username ; char * content_type ; ci_off_t content_length ; char * chain_ret = NULL ; char * ret = NULL ; int chkipdone = 0 ; ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>processing<S2SV_blank>preview<S2SV_blank>header.\\\\n\" ) ; if ( preview_data_len ) ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>preview<S2SV_blank>data<S2SV_blank>size<S2SV_blank>is<S2SV_blank>%d\\\\n\" , preview_data_len ) ; if ( ( req_header = ci_http_request_headers ( req ) ) == NULL ) { ci_debug_printf ( 0 , \"ERROR<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>bad<S2SV_blank>http<S2SV_blank>header,<S2SV_blank>aborting.\\\\n\" ) ; return CI_ERROR ; } if ( ( username = ci_headers_value ( req -> request_header , \"X-Authenticated-User\" ) ) != NULL ) { ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>X-Authenticated-User:<S2SV_blank>%s\\\\n\" , username ) ; if ( simple_pattern_compare ( username , TRUSTUSER ) == 1 ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>No<S2SV_blank>squidguard<S2SV_blank>and<S2SV_blank>antivir<S2SV_blank>check<S2SV_blank>(TRUSTUSER<S2SV_blank>match)<S2SV_blank>for<S2SV_blank>user:<S2SV_blank>%s\\\\n\" , username ) ; return CI_MOD_ALLOW204 ; } } else { username = ( char * ) malloc ( sizeof ( char ) * 2 ) ; strcpy ( username , \"-\" ) ; } if ( ( clientip = ci_headers_value ( req -> request_header , \"X-Client-IP\" ) ) != NULL ) { ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>X-Client-IP:<S2SV_blank>%s\\\\n\" , clientip ) ; ip = inet_addr ( clientip ) ; chkipdone = 0 ; if ( dnslookup == 1 ) { if ( ( clientname = gethostbyaddr ( ( char * ) & ip , sizeof ( ip ) , AF_INET ) ) != NULL ) { if ( clientname -> h_name != NULL ) { if ( client_pattern_compare ( clientip , clientname -> h_name ) > 0 ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>No<S2SV_blank>squidguard<S2SV_blank>and<S2SV_blank>antivir<S2SV_blank>check<S2SV_blank>(TRUSTCLIENT<S2SV_blank>match)<S2SV_blank>for<S2SV_blank>client:<S2SV_blank>%s(%s)\\\\n\" , clientname -> h_name , clientip ) ; return CI_MOD_ALLOW204 ; } chkipdone = 1 ; } } } if ( chkipdone == 0 ) { if ( client_pattern_compare ( clientip , NULL ) > 0 ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>No<S2SV_blank>squidguard<S2SV_blank>and<S2SV_blank>antivir<S2SV_blank>check<S2SV_blank>(TRUSTCLIENT<S2SV_blank>match)<S2SV_blank>for<S2SV_blank>client:<S2SV_blank>%s\\\\n\" , clientip ) ; return CI_MOD_ALLOW204 ; } } } else { clientip = ( char * ) malloc ( sizeof ( char ) * 2 ) ; strcpy ( clientip , \"-\" ) ; } if ( ! extract_http_info ( req , req_header , & httpinf ) ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>bad<S2SV_blank>http<S2SV_blank>header,<S2SV_blank>aborting.\\\\n\" ) ; return CI_MOD_ALLOW204 ; } ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>URL<S2SV_blank>requested:<S2SV_blank>%s\\\\n\" , httpinf . url ) ; if ( simple_pattern_compare ( httpinf . url , WHITELIST ) == 1 ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>No<S2SV_blank>squidguard<S2SV_blank>and<S2SV_blank>antivir<S2SV_blank>check<S2SV_blank>(WHITELIST<S2SV_blank>match)<S2SV_blank>for<S2SV_blank>url:<S2SV_blank>%s\\\\n\" , httpinf . url ) ; return CI_MOD_ALLOW204 ; } if ( usepipe == 1 ) { <S2SV_StartBug> ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>Sending<S2SV_blank>request<S2SV_blank>to<S2SV_blank>chained<S2SV_blank>program:<S2SV_blank>%s\\\\n\" , squidguard ) ; <S2SV_EndBug> ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>Request:<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , httpinf . url , clientip , username , httpinf . method ) ; <S2SV_StartBug> fprintf ( sgfpw , \"%s<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , httpinf . url , clientip , username , httpinf . method ) ; <S2SV_EndBug> <S2SV_StartBug> fflush ( sgfpw ) ; <S2SV_EndBug> chain_ret = ( char * ) malloc ( sizeof ( char ) * MAX_URL_SIZE ) ; if ( chain_ret != NULL ) { ret = fgets ( chain_ret , MAX_URL_SIZE , sgfpr ) ; if ( ( ret != NULL ) && ( strlen ( chain_ret ) > 1 ) ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>Chained<S2SV_blank>program<S2SV_blank>redirection<S2SV_blank>received:<S2SV_blank>%s\\\\n\" , chain_ret ) ; if ( logredir ) ci_debug_printf ( 0 , \"INFO<S2SV_blank>Chained<S2SV_blank>program<S2SV_blank>redirection<S2SV_blank>received:<S2SV_blank>%s\\\\n\" , chain_ret ) ; data -> blocked = 1 ; generate_redirect_page ( strtok ( chain_ret , \"<S2SV_blank>\" ) , req , data ) ; xfree ( chain_ret ) ; chain_ret = NULL ; return CI_MOD_CONTINUE ; } xfree ( chain_ret ) ; chain_ret = NULL ; } } if ( strcmp ( httpinf . method , \"CONNECT\" ) == 0 ) { ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>method<S2SV_blank>%s<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>scanned.\\\\n\" , httpinf . method ) ; return CI_MOD_ALLOW204 ; } if ( simple_pattern_compare ( httpinf . url , ABORT ) == 1 ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>No<S2SV_blank>antivir<S2SV_blank>check<S2SV_blank>(ABORT<S2SV_blank>match)<S2SV_blank>for<S2SV_blank>url:<S2SV_blank>%s\\\\n\" , httpinf . url ) ; return CI_MOD_ALLOW204 ; } content_length = ci_http_content_length ( req ) ; ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>Content-Length:<S2SV_blank>%d\\\\n\" , ( int ) content_length ) ; if ( ( content_length > 0 ) && ( maxsize > 0 ) && ( content_length >= maxsize ) ) { ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>No<S2SV_blank>antivir<S2SV_blank>check,<S2SV_blank>content-length<S2SV_blank>upper<S2SV_blank>than<S2SV_blank>maxsize<S2SV_blank>(%d<S2SV_blank>><S2SV_blank>%d)\\\\n\" , content_length , ( int ) maxsize ) ; return CI_MOD_ALLOW204 ; } if ( ( content_type = http_content_type ( req ) ) != NULL ) { ci_debug_printf ( 2 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>Content-Type:<S2SV_blank>%s\\\\n\" , content_type ) ; if ( simple_pattern_compare ( content_type , ABORTCONTENT ) ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>No<S2SV_blank>antivir<S2SV_blank>check<S2SV_blank>(ABORTCONTENT<S2SV_blank>match)<S2SV_blank>for<S2SV_blank>content-type:<S2SV_blank>%s\\\\n\" , content_type ) ; return CI_MOD_ALLOW204 ; } } if ( ! data || ! ci_req_hasbody ( req ) ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>No<S2SV_blank>body<S2SV_blank>data,<S2SV_blank>allow<S2SV_blank>204\\\\n\" ) ; return CI_MOD_ALLOW204 ; } if ( preview_data_len == 0 ) { ci_debug_printf ( 1 , \"DEBUG<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>can<S2SV_blank>not<S2SV_blank>begin<S2SV_blank>to<S2SV_blank>scan<S2SV_blank>url:<S2SV_blank>No<S2SV_blank>preview<S2SV_blank>data.\\\\n\" ) ; return CI_MOD_ALLOW204 ; } data -> url = ci_buffer_alloc ( strlen ( httpinf . url ) + 1 ) ; strcpy ( data -> url , httpinf . url ) ; if ( username != NULL ) { data -> user = ci_buffer_alloc ( strlen ( username ) + 1 ) ; strcpy ( data -> user , username ) ; } else { data -> user = NULL ; } if ( clientip != NULL ) { data -> clientip = ci_buffer_alloc ( strlen ( clientip ) + 1 ) ; strcpy ( data -> clientip , clientip ) ; } else { ci_debug_printf ( 0 , \"ERROR<S2SV_blank>squidclamav_check_preview_handler:<S2SV_blank>clientip<S2SV_blank>is<S2SV_blank>null,<S2SV_blank>you<S2SV_blank>must<S2SV_blank>set<S2SV_blank>\\'icap_send_client_ip<S2SV_blank>on\\'<S2SV_blank>into<S2SV_blank>squid.conf\\\\n\" ) ; data -> clientip = NULL ; } data -> body = ci_simple_file_new ( 0 ) ; if ( ( SEND_PERCENT_BYTES >= 0 ) && ( START_SEND_AFTER == 0 ) ) { ci_req_unlock_data ( req ) ; ci_simple_file_lock_all ( data -> body ) ; } if ( ! data -> body ) return CI_ERROR ; if ( preview_data_len ) { if ( ci_simple_file_write ( data -> body , preview_data , preview_data_len , ci_req_hasalldata ( req ) ) == CI_ERROR ) return CI_ERROR ; } return CI_MOD_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) { char * rbuff = NULL ; <S2SV_ModStart> method ) ; rbuff = replace ( httpinf . url , \"%\" , \"%25\" ) ; <S2SV_ModStart> , \"%s<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , rbuff <S2SV_ModEnd> , clientip , <S2SV_ModStart> fflush ( sgfpw ) ; xfree ( rbuff\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16805\n\n```\nCWE-125 static void r_bin_dwarf_dump_debug_info ( FILE * f , const RBinDwarfDebugInfo * inf ) { size_t i , j , k ; RBinDwarfDIE * dies ; RBinDwarfAttrValue * values ; if ( ! inf || ! f ) { return ; } for ( i = 0 ; i < inf -> length ; i ++ ) { fprintf ( f , \"<S2SV_blank><S2SV_blank>Compilation<S2SV_blank>Unit<S2SV_blank>@<S2SV_blank>offset<S2SV_blank>0x%\" PFMT64x \":\\\\n\" , inf -> comp_units [ i ] . offset ) ; fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank>Length:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%x\\\\n\" , inf -> comp_units [ i ] . hdr . length ) ; fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank>Version:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , inf -> comp_units [ i ] . hdr . version ) ; fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank>Abbrev<S2SV_blank>Offset:<S2SV_blank>0x%x\\\\n\" , inf -> comp_units [ i ] . hdr . abbrev_offset ) ; fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank>Pointer<S2SV_blank>Size:<S2SV_blank><S2SV_blank>%d\\\\n\" , inf -> comp_units [ i ] . hdr . pointer_size ) ; dies = inf -> comp_units [ i ] . dies ; for ( j = 0 ; j < inf -> comp_units [ i ] . length ; j ++ ) { fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Abbrev<S2SV_blank>Number:<S2SV_blank>%\" PFMT64u \"<S2SV_blank>\" , dies [ j ] . abbrev_code ) ; if ( dies [ j ] . tag && dies [ j ] . tag <= DW_TAG_volatile_type && dwarf_tag_name_encodings [ dies [ j ] . tag ] ) { fprintf ( f , \"(%s)\\\\n\" , dwarf_tag_name_encodings [ dies [ j ] . tag ] ) ; } else { fprintf ( f , \"(Unknown<S2SV_blank>abbrev<S2SV_blank>tag)\\\\n\" ) ; } if ( ! dies [ j ] . abbrev_code ) { continue ; } values = dies [ j ] . attr_values ; for ( k = 0 ; k < dies [ j ] . length ; k ++ ) { <S2SV_StartBug> if ( ! values [ k ] . name ) <S2SV_EndBug> continue ; if ( values [ k ] . name < DW_AT_vtable_elem_location && dwarf_attr_encodings [ values [ k ] . name ] ) { fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%-18s<S2SV_blank>:<S2SV_blank>\" , dwarf_attr_encodings [ values [ k ] . name ] ) ; } else { fprintf ( f , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>TODO\\\\t\" ) ; } r_bin_dwarf_dump_attr_value ( & values [ k ] , f ) ; fprintf ( f , \"\\\\n\" ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . name ) { continue ; } <S2SV_ModEnd> if ( values\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int irda_recvmsg_stream ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct irda_sock * self = irda_sk ( sk ) ; int noblock = flags & MSG_DONTWAIT ; size_t copied = 0 ; int target , err ; long timeo ; IRDA_DEBUG ( 3 , \"%s()\\\\n\" , __func__ ) ; if ( ( err = sock_error ( sk ) ) < 0 ) return err ; if ( sock -> flags & __SO_ACCEPTCON ) return - EINVAL ; err = - EOPNOTSUPP ; if ( flags & MSG_OOB ) return - EOPNOTSUPP ; err = 0 ; target = sock_rcvlowat ( sk , flags & MSG_WAITALL , size ) ; timeo = sock_rcvtimeo ( sk , noblock ) ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> do { int chunk ; struct sk_buff * skb = skb_dequeue ( & sk -> sk_receive_queue ) ; if ( skb == NULL ) { DEFINE_WAIT ( wait ) ; err = 0 ; if ( copied >= target ) break ; prepare_to_wait_exclusive ( sk_sleep ( sk ) , & wait , TASK_INTERRUPTIBLE ) ; err = sock_error ( sk ) ; if ( err ) ; else if ( sk -> sk_shutdown & RCV_SHUTDOWN ) ; else if ( noblock ) err = - EAGAIN ; else if ( signal_pending ( current ) ) err = sock_intr_errno ( timeo ) ; else if ( sk -> sk_state != TCP_ESTABLISHED ) err = - ENOTCONN ; else if ( skb_peek ( & sk -> sk_receive_queue ) == NULL ) schedule ( ) ; finish_wait ( sk_sleep ( sk ) , & wait ) ; if ( err ) return err ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; continue ; } chunk = min_t ( unsigned int , skb -> len , size ) ; if ( memcpy_toiovec ( msg -> msg_iov , skb -> data , chunk ) ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; if ( copied == 0 ) copied = - EFAULT ; break ; } copied += chunk ; size -= chunk ; if ( ! ( flags & MSG_PEEK ) ) { skb_pull ( skb , chunk ) ; if ( skb -> len ) { IRDA_DEBUG ( 1 , \"%s(),<S2SV_blank>back<S2SV_blank>on<S2SV_blank>q!\\\\n\" , __func__ ) ; skb_queue_head ( & sk -> sk_receive_queue , skb ) ; break ; } kfree_skb ( skb ) ; } else { IRDA_DEBUG ( 0 , \"%s()<S2SV_blank>questionable!?\\\\n\" , __func__ ) ; skb_queue_head ( & sk -> sk_receive_queue , skb ) ; break ; } } while ( size ) ; if ( self -> rx_flow == FLOW_STOP ) { if ( ( atomic_read ( & sk -> sk_rmem_alloc ) << 2 ) <= sk -> sk_rcvbuf ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Starting<S2SV_blank>IrTTP\\\\n\" , __func__ ) ; self -> rx_flow = FLOW_START ; irttp_flow_request ( self -> tsap , FLOW_START ) ; } } return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> noblock ) ; <S2SV_ModEnd> do { int\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12904\n\n```\nCWE-310 static unsigned int do_encrypt ( const RIJNDAEL_context * ctx , unsigned char * bx , const unsigned char * ax ) { # ifdef USE_AMD64_ASM return _gcry_aes_amd64_encrypt_block ( ctx -> keyschenc , bx , ax , ctx -> rounds , <S2SV_StartBug> encT ) ; <S2SV_EndBug> # elif defined ( USE_ARM_ASM ) <S2SV_StartBug> return _gcry_aes_arm_encrypt_block ( ctx -> keyschenc , bx , ax , ctx -> rounds , encT ) ; <S2SV_EndBug> # else return do_encrypt_fn ( ctx , bx , ax ) ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rounds , enc_tables . T <S2SV_ModEnd> ) ; # <S2SV_ModStart> -> rounds , enc_tables . T <S2SV_ModEnd> ) ; #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2020\n\n```\nCWE-189 PHP_FUNCTION ( imagecrop ) { zval * IM ; gdImagePtr im ; gdImagePtr im_crop ; gdRect rect ; zval * z_rect ; zval * * tmp ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"ra\" , & IM , & z_rect ) == FAILURE ) { return ; } ZEND_FETCH_RESOURCE ( im , gdImagePtr , & IM , - 1 , \"Image\" , le_gd ) ; if ( zend_hash_find ( HASH_OF ( z_rect ) , \"x\" , sizeof ( \"x\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> rect . x = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>x<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"y\" , sizeof ( \"x\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> rect . y = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>y<S2SV_blank>position\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"width\" , sizeof ( \"width\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> rect . width = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>width\" ) ; RETURN_FALSE ; } if ( zend_hash_find ( HASH_OF ( z_rect ) , \"height\" , sizeof ( \"height\" ) , ( void * * ) & tmp ) != FAILURE ) { <S2SV_StartBug> rect . height = Z_LVAL_PP ( tmp ) ; <S2SV_EndBug> } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Missing<S2SV_blank>height\" ) ; RETURN_FALSE ; } im_crop = gdImageCrop ( im , & rect ) ; if ( im_crop == NULL ) { RETURN_FALSE ; } else { ZEND_REGISTER_RESOURCE ( return_value , im_crop , le_gd ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval ) ; <S2SV_ModStart> . x = Z_LVAL ( lval ) ; } else { rect . x = <S2SV_ModStart> tmp ) ; } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval ) ; <S2SV_ModStart> . y = Z_LVAL ( lval ) ; } else { rect . y = <S2SV_ModStart> tmp ) ; } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval ) ; <S2SV_ModStart> . width = Z_LVAL ( lval ) ; } else { rect . width = <S2SV_ModStart> tmp ) ; } <S2SV_ModStart> FAILURE ) { if ( Z_TYPE_PP ( tmp ) != IS_LONG ) { zval lval ; lval = * * tmp ; zval_copy_ctor ( & lval ) ; convert_to_long ( & lval ) ; <S2SV_ModStart> . height = Z_LVAL ( lval ) ; } else { rect . height = <S2SV_ModStart> tmp ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7862\n\n```\nCWE-787 static int decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { PicContext * s = avctx -> priv_data ; AVFrame * frame = data ; uint32_t * palette ; int bits_per_plane , bpp , etype , esize , npal , pos_after_pal ; int i , x , y , plane , tmp , ret , val ; bytestream2_init ( & s -> g , avpkt -> data , avpkt -> size ) ; if ( bytestream2_get_bytes_left ( & s -> g ) < 11 ) return AVERROR_INVALIDDATA ; if ( bytestream2_get_le16u ( & s -> g ) != 0x1234 ) return AVERROR_INVALIDDATA ; s -> width = bytestream2_get_le16u ( & s -> g ) ; s -> height = bytestream2_get_le16u ( & s -> g ) ; bytestream2_skip ( & s -> g , 4 ) ; tmp = bytestream2_get_byteu ( & s -> g ) ; bits_per_plane = tmp & 0xF ; s -> nb_planes = ( tmp >> 4 ) + 1 ; bpp = bits_per_plane * s -> nb_planes ; if ( bits_per_plane > 8 || bpp < 1 || bpp > 32 ) { avpriv_request_sample ( avctx , \"Unsupported<S2SV_blank>bit<S2SV_blank>depth\" ) ; return AVERROR_PATCHWELCOME ; } if ( bytestream2_peek_byte ( & s -> g ) == 0xFF || bpp == 1 || bpp == 4 || bpp == 8 ) { bytestream2_skip ( & s -> g , 2 ) ; etype = bytestream2_get_le16 ( & s -> g ) ; esize = bytestream2_get_le16 ( & s -> g ) ; if ( bytestream2_get_bytes_left ( & s -> g ) < esize ) return AVERROR_INVALIDDATA ; } else { etype = - 1 ; esize = 0 ; } avctx -> pix_fmt = AV_PIX_FMT_PAL8 ; if ( av_image_check_size ( s -> width , s -> height , 0 , avctx ) < 0 ) return - 1 ; <S2SV_StartBug> if ( s -> width != avctx -> width && s -> height != avctx -> height ) { <S2SV_EndBug> ret = ff_set_dimensions ( avctx , s -> width , s -> height ) ; if ( ret < 0 ) return ret ; } if ( ( ret = ff_get_buffer ( avctx , frame , 0 ) ) < 0 ) return ret ; memset ( frame -> data [ 0 ] , 0 , s -> height * frame -> linesize [ 0 ] ) ; frame -> pict_type = AV_PICTURE_TYPE_I ; frame -> palette_has_changed = 1 ; pos_after_pal = bytestream2_tell ( & s -> g ) + esize ; palette = ( uint32_t * ) frame -> data [ 1 ] ; if ( etype == 1 && esize > 1 && bytestream2_peek_byte ( & s -> g ) < 6 ) { int idx = bytestream2_get_byte ( & s -> g ) ; npal = 4 ; for ( i = 0 ; i < npal ; i ++ ) palette [ i ] = ff_cga_palette [ cga_mode45_index [ idx ] [ i ] ] ; } else if ( etype == 2 ) { npal = FFMIN ( esize , 16 ) ; for ( i = 0 ; i < npal ; i ++ ) { int pal_idx = bytestream2_get_byte ( & s -> g ) ; palette [ i ] = ff_cga_palette [ FFMIN ( pal_idx , 15 ) ] ; } } else if ( etype == 3 ) { npal = FFMIN ( esize , 16 ) ; for ( i = 0 ; i < npal ; i ++ ) { int pal_idx = bytestream2_get_byte ( & s -> g ) ; palette [ i ] = ff_ega_palette [ FFMIN ( pal_idx , 63 ) ] ; } } else if ( etype == 4 || etype == 5 ) { npal = FFMIN ( esize / 3 , 256 ) ; for ( i = 0 ; i < npal ; i ++ ) { palette [ i ] = bytestream2_get_be24 ( & s -> g ) << 2 ; palette [ i ] |= 0xFFU << 24 | palette [ i ] >> 6 & 0x30303 ; } } else { if ( bpp == 1 ) { npal = 2 ; palette [ 0 ] = 0xFF000000 ; palette [ 1 ] = 0xFFFFFFFF ; } else if ( bpp == 2 ) { npal = 4 ; for ( i = 0 ; i < npal ; i ++ ) palette [ i ] = ff_cga_palette [ cga_mode45_index [ 0 ] [ i ] ] ; } else { npal = 16 ; memcpy ( palette , ff_cga_palette , npal * 4 ) ; } } memset ( palette + npal , 0 , AVPALETTE_SIZE - npal * 4 ) ; bytestream2_seek ( & s -> g , pos_after_pal , SEEK_SET ) ; val = 0 ; y = s -> height - 1 ; if ( bytestream2_get_le16 ( & s -> g ) ) { x = 0 ; plane = 0 ; while ( bytestream2_get_bytes_left ( & s -> g ) >= 6 ) { int stop_size , marker , t1 , t2 ; t1 = bytestream2_get_bytes_left ( & s -> g ) ; t2 = bytestream2_get_le16 ( & s -> g ) ; stop_size = t1 - FFMIN ( t1 , t2 ) ; bytestream2_skip ( & s -> g , 2 ) ; marker = bytestream2_get_byte ( & s -> g ) ; while ( plane < s -> nb_planes && bytestream2_get_bytes_left ( & s -> g ) > stop_size ) { int run = 1 ; val = bytestream2_get_byte ( & s -> g ) ; if ( val == marker ) { run = bytestream2_get_byte ( & s -> g ) ; if ( run == 0 ) run = bytestream2_get_le16 ( & s -> g ) ; val = bytestream2_get_byte ( & s -> g ) ; } if ( ! bytestream2_get_bytes_left ( & s -> g ) ) break ; if ( bits_per_plane == 8 ) { picmemset_8bpp ( s , frame , val , run , & x , & y ) ; if ( y < 0 ) goto finish ; } else { picmemset ( s , frame , val , run , & x , & y , & plane , bits_per_plane ) ; } } } if ( x < avctx -> width ) { int run = ( y + 1 ) * avctx -> width - x ; if ( bits_per_plane == 8 ) picmemset_8bpp ( s , frame , val , run , & x , & y ) ; else picmemset ( s , frame , val , run / ( 8 / bits_per_plane ) , & x , & y , & plane , bits_per_plane ) ; } } else { while ( y >= 0 && bytestream2_get_bytes_left ( & s -> g ) > 0 ) { memcpy ( frame -> data [ 0 ] + y * frame -> linesize [ 0 ] , s -> g . buffer , FFMIN ( avctx -> width , bytestream2_get_bytes_left ( & s -> g ) ) ) ; bytestream2_skip ( & s -> g , avctx -> width ) ; y -- ; } } finish : * got_frame = 1 ; return avpkt -> size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> avctx -> width || <S2SV_ModEnd> s -> height\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12896\n\n```\nCWE-125 void isakmp_rfc3948_print ( netdissect_options * ndo , const u_char * bp , u_int length , const u_char * bp2 ) { <S2SV_StartBug> if ( length == 1 && bp [ 0 ] == 0xff ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"isakmp-nat-keep-alive\" ) ) ; return ; } if ( length < 4 ) { goto trunc ; <S2SV_StartBug> } <S2SV_EndBug> if ( bp [ 0 ] == 0 && bp [ 1 ] == 0 && bp [ 2 ] == 0 && bp [ 3 ] == 0 ) { ND_PRINT ( ( ndo , \"NONESP-encap:<S2SV_blank>\" ) ) ; isakmp_print ( ndo , bp + 4 , length - 4 , bp2 ) ; return ; } { int nh , enh , padlen ; int advance ; ND_PRINT ( ( ndo , \"UDP-encap:<S2SV_blank>\" ) ) ; advance = esp_print ( ndo , bp , length , bp2 , & enh , & padlen ) ; if ( advance <= 0 ) return ; bp += advance ; length -= advance + padlen ; nh = enh & 0xff ; ip_print_inner ( ndo , bp , length , nh , bp2 ) ; return ; } trunc : ND_PRINT ( ( ndo , \"[|isakmp]\" ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bp2 ) { ND_TCHECK ( bp [ 0 ] ) ; <S2SV_ModStart> trunc ; } ND_TCHECK ( bp [ 3 ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-444(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-7670\n\n```\nCWE-444 static void add_header_value ( VALUE hh , const char * key , int klen , const char * val , int vlen ) { <S2SV_StartBug> if ( sizeof ( content_type ) - 1 == klen && 0 == strncasecmp ( key , content_type , sizeof ( content_type ) - 1 ) ) { <S2SV_EndBug> <S2SV_StartBug> rb_hash_aset ( hh , content_type_val , rb_str_new ( val , vlen ) ) ; <S2SV_EndBug> } else if ( sizeof ( content_length ) - 1 == klen && 0 == strncasecmp ( key , content_length , sizeof ( content_length ) - 1 ) ) { <S2SV_StartBug> rb_hash_aset ( hh , content_length_val , rb_str_new ( val , vlen ) ) ; <S2SV_EndBug> } else { char hkey [ 1024 ] ; char * k = hkey ; volatile VALUE sval = rb_str_new ( val , vlen ) ; <S2SV_StartBug> strcpy ( hkey , \"HTTP_\" ) ; <S2SV_EndBug> k = hkey + 5 ; if ( ( int ) ( sizeof ( hkey ) - 5 ) <= klen ) { klen = sizeof ( hkey ) - 6 ; } strncpy ( k , key , klen ) ; hkey [ klen + 5 ] = '\\\\0' ; for ( k = hkey + 5 ; '\\\\0' != * k ; k ++ ) { if ( '-' == * k ) { * k = '_' ; } else { * k = toupper ( * k ) ; } } <S2SV_StartBug> rb_hash_aset ( hh , rb_str_new ( hkey , klen + 5 ) , sval ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vlen ) { VALUE v ; <S2SV_ModStart> ) ) { if ( Qnil == ( v = rb_hash_lookup2 ( hh , content_type_val , Qnil ) ) ) { <S2SV_ModStart> ) ) ; } else { volatile VALUE a = rb_ary_new ( ) ; rb_ary_push ( a , v ) ; rb_ary_push ( a , rb_str_new ( val , vlen ) ) ; rb_hash_aset ( hh , content_type_val , a ) ; } <S2SV_ModStart> ) ) { if ( Qnil == ( v = rb_hash_lookup2 ( hh , content_length_val , Qnil ) ) ) { <S2SV_ModStart> ) ) ; } else { rb_raise ( rb_eArgError , \"Multiple<S2SV_blank>Content-Length<S2SV_blank>headers.\" ) ; } <S2SV_ModStart> vlen ) ; volatile VALUE kval ; <S2SV_ModStart> ; } } kval = <S2SV_ModEnd> rb_str_new ( hkey <S2SV_ModStart> + 5 ) ; if ( Qnil == ( v = rb_hash_lookup2 ( hh , kval , Qnil ) ) ) { rb_hash_aset ( hh , kval <S2SV_ModStart> ) ; } else { volatile VALUE a = rb_ary_new ( ) ; rb_ary_push ( a , v ) ; rb_ary_push ( a , sval ) ; rb_hash_aset ( hh , kval , a ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13135\n\n```\nCWE-908 static Image * ReadCUTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowCUTReaderException ( severity , tag ) { if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; ThrowReaderException ( severity , tag ) ; } <S2SV_EndBug> Image * image , * palette ; ImageInfo * clone_info ; MagickBooleanType status ; MagickOffsetType offset ; size_t EncodedByte ; unsigned char RunCount , RunValue , RunCountMasked ; CUTHeader Header ; CUTPalHeader PalHeader ; ssize_t depth ; ssize_t i , j ; ssize_t ldblk ; unsigned char * BImgBuff = NULL , * ptrB ; PixelPacket * q ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } palette = NULL ; clone_info = NULL ; Header . Width = ReadBlobLSBShort ( image ) ; Header . Height = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . Width == 0 || Header . Height == 0 || Header . Reserved != 0 ) CUT_KO : ThrowCUTReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; EncodedByte = ReadBlobLSBShort ( image ) ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; ldblk = 0 ; while ( ( int ) RunCountMasked != 0 ) { i = 1 ; if ( ( int ) RunCount < 0x80 ) i = ( ssize_t ) RunCountMasked ; offset = SeekBlob ( image , TellBlob ( image ) + i , SEEK_SET ) ; if ( offset < 0 ) ThrowCUTReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; EncodedByte -= i + 1 ; ldblk += ( ssize_t ) RunCountMasked ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; RunCountMasked = RunCount & 0x7F ; } if ( EncodedByte != 1 ) goto CUT_KO ; i = 0 ; if ( ldblk == ( int ) Header . Width ) i = 8 ; if ( 2 * ldblk == ( int ) Header . Width ) i = 4 ; if ( 8 * ldblk == ( int ) Header . Width ) i = 1 ; if ( i == 0 ) goto CUT_KO ; depth = i ; image -> columns = Header . Width ; image -> rows = Header . Height ; image -> depth = 8 ; image -> colors = ( size_t ) ( GetQuantumRange ( 1UL * i ) + 1 ) ; if ( image_info -> ping != MagickFalse ) goto Finish ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } if ( ( clone_info = CloneImageInfo ( image_info ) ) == NULL ) goto NoPalette ; i = ( ssize_t ) strlen ( clone_info -> filename ) ; j = i ; while ( -- i > 0 ) { if ( clone_info -> filename [ i ] == '.' ) { break ; } if ( clone_info -> filename [ i ] == '/' || clone_info -> filename [ i ] == '\\\\\\\\' || clone_info -> filename [ i ] == ':' ) { i = j ; break ; } } ( void ) CopyMagickString ( clone_info -> filename + i , \".PAL\" , ( size_t ) ( MaxTextExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { ( void ) CopyMagickString ( clone_info -> filename + i , \".pal\" , ( size_t ) ( MaxTextExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info -> filename [ i ] = '\\\\0' ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info = DestroyImageInfo ( clone_info ) ; clone_info = NULL ; goto NoPalette ; } } } if ( ( palette = AcquireImage ( clone_info ) ) == NULL ) goto NoPalette ; status = OpenBlob ( clone_info , palette , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { ErasePalette : palette = DestroyImage ( palette ) ; palette = NULL ; goto NoPalette ; } if ( palette != NULL ) { ( void ) ReadBlob ( palette , 2 , ( unsigned char * ) PalHeader . FileId ) ; if ( strncmp ( PalHeader . FileId , \"AH\" , 2 ) != 0 ) goto ErasePalette ; PalHeader . Version = ReadBlobLSBShort ( palette ) ; PalHeader . Size = ReadBlobLSBShort ( palette ) ; PalHeader . FileType = ( char ) ReadBlobByte ( palette ) ; PalHeader . SubType = ( char ) ReadBlobByte ( palette ) ; PalHeader . BoardID = ReadBlobLSBShort ( palette ) ; PalHeader . GraphicsMode = ReadBlobLSBShort ( palette ) ; PalHeader . MaxIndex = ReadBlobLSBShort ( palette ) ; PalHeader . MaxRed = ReadBlobLSBShort ( palette ) ; PalHeader . MaxGreen = ReadBlobLSBShort ( palette ) ; PalHeader . MaxBlue = ReadBlobLSBShort ( palette ) ; ( void ) ReadBlob ( palette , 20 , ( unsigned char * ) PalHeader . PaletteId ) ; if ( EOFBlob ( image ) ) ThrowCUTReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; if ( PalHeader . MaxIndex < 1 ) goto ErasePalette ; image -> colors = PalHeader . MaxIndex + 1 ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) goto NoMemory ; if ( PalHeader . MaxRed == 0 ) PalHeader . MaxRed = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxGreen == 0 ) PalHeader . MaxGreen = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxBlue == 0 ) PalHeader . MaxBlue = ( unsigned int ) QuantumRange ; for ( i = 0 ; i <= ( int ) PalHeader . MaxIndex ; i ++ ) { j = ( ssize_t ) TellBlob ( palette ) ; if ( ( j % 512 ) > 512 - 6 ) { j = ( ( j / 512 ) + 1 ) * 512 ; offset = SeekBlob ( palette , j , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } image -> colormap [ i ] . red = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxRed ) { image -> colormap [ i ] . red = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . red * QuantumRange + ( PalHeader . MaxRed >> 1 ) ) / PalHeader . MaxRed ) ; } image -> colormap [ i ] . green = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxGreen ) { image -> colormap [ i ] . green = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . green * QuantumRange + ( PalHeader . MaxGreen >> 1 ) ) / PalHeader . MaxGreen ) ; } image -> colormap [ i ] . blue = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxBlue ) { image -> colormap [ i ] . blue = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . blue * QuantumRange + ( PalHeader . MaxBlue >> 1 ) ) / PalHeader . MaxBlue ) ; } } if ( EOFBlob ( image ) ) ThrowCUTReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; } NoPalette : if ( palette == NULL ) { image -> colors = 256 ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) { NoMemory : ThrowCUTReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) i ) ; } } BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == NULL ) goto NoMemory ; <S2SV_StartBug> offset = SeekBlob ( image , 6 , SEEK_SET ) ; <S2SV_EndBug> if ( offset < 0 ) { if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } for ( i = 0 ; i < ( int ) Header . Height ; i ++ ) { EncodedByte = ReadBlobLSBShort ( image ) ; ptrB = BImgBuff ; j = ldblk ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; while ( ( int ) RunCountMasked != 0 ) { if ( ( ssize_t ) RunCountMasked > j ) { RunCountMasked = ( unsigned char ) j ; if ( j == 0 ) { break ; } } if ( ( int ) RunCount > 0x80 ) { RunValue = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) memset ( ptrB , ( int ) RunValue , ( size_t ) RunCountMasked ) ; } else { ( void ) ReadBlob ( image , ( size_t ) RunCountMasked , ptrB ) ; } ptrB += ( int ) RunCountMasked ; j -= ( int ) RunCountMasked ; if ( EOFBlob ( image ) != MagickFalse ) goto Finish ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; } InsertRow ( depth , BImgBuff , i , image ) ; } ( void ) SyncImage ( image ) ; if ( palette == NULL ) { if ( ( image -> storage_class == PseudoClass ) && ( SetImageGray ( image , & image -> exception ) != MagickFalse ) ) { if ( GetCutColors ( image ) == 2 ) { for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { register Quantum sample ; sample = ScaleCharToQuantum ( ( unsigned char ) i ) ; if ( image -> colormap [ i ] . red != sample ) goto Finish ; if ( image -> colormap [ i ] . green != sample ) goto Finish ; if ( image -> colormap [ i ] . blue != sample ) goto Finish ; } image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { q = QueueAuthenticPixels ( image , 0 , i , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) { if ( GetPixelRed ( q ) == ScaleCharToQuantum ( 1 ) ) { SetPixelRed ( q , QuantumRange ) ; SetPixelGreen ( q , QuantumRange ) ; SetPixelBlue ( q , QuantumRange ) ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) goto Finish ; } } } } Finish : if ( BImgBuff != NULL ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , tag ) \\\\\\n{ <S2SV_ModEnd> if ( palette <S2SV_ModStart> tag ) ; \\\\\\n} <S2SV_ModEnd> Image * image <S2SV_ModStart> goto NoMemory ; ( void ) memset ( BImgBuff , 0 , ( size_t ) ldblk * sizeof ( * BImgBuff ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0211\n\n```\nCWE-189 static ssize_t _archive_write_data ( struct archive * _a , const void * buff , size_t s ) { struct archive_write * a = ( struct archive_write * ) _a ; <S2SV_StartBug> archive_check_magic ( & a -> archive , ARCHIVE_WRITE_MAGIC , <S2SV_EndBug> <S2SV_StartBug> ARCHIVE_STATE_DATA , \"archive_write_data\" ) ; <S2SV_EndBug> archive_clear_error ( & a -> archive ) ; return ( ( a -> format_write_data ) ( a , buff , s ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) _a ; const size_t max_write = INT_MAX ; <S2SV_ModStart> , \"archive_write_data\" ) ; if ( s > max_write ) s = max_write\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-9497\n\n```\nCWE-787 IMPEG2D_ERROR_CODES_T impeg2d_dec_seq_hdr ( dec_state_t * ps_dec ) { stream_t * ps_stream ; ps_stream = & ps_dec -> s_bit_stream ; UWORD16 u2_height ; UWORD16 u2_width ; if ( impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) != SEQUENCE_HEADER_CODE ) { impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; return IMPEG2D_FRM_HDR_START_CODE_NOT_FOUND ; } impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; u2_width = impeg2d_bit_stream_get ( ps_stream , 12 ) ; u2_height = impeg2d_bit_stream_get ( ps_stream , 12 ) ; if ( 0 == u2_width || 0 == u2_height ) { IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_FRM_HDR_DECODE_ERR ; return e_error ; } if ( ( u2_width != ps_dec -> u2_horizontal_size ) || ( u2_height != ps_dec -> u2_vertical_size ) ) { if ( 0 == ps_dec -> u2_header_done ) { ps_dec -> u2_horizontal_size = u2_width ; ps_dec -> u2_vertical_size = u2_height ; <S2SV_StartBug> if ( 0 == ps_dec -> u4_frm_buf_stride ) <S2SV_EndBug> { ps_dec -> u4_frm_buf_stride = ( UWORD32 ) ( u2_width ) ; } } else { if ( 0 == ps_dec -> i4_pic_count ) { return ( IMPEG2D_ERROR_CODES_T ) IMPEG2D_FRM_HDR_DECODE_ERR ; } <S2SV_StartBug> else if ( ( u2_width > ps_dec -> u2_create_max_width ) <S2SV_EndBug> <S2SV_StartBug> || ( u2_height > ps_dec -> u2_create_max_height ) ) <S2SV_EndBug> { IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS ; ps_dec -> u2_reinit_max_height = u2_height ; ps_dec -> u2_reinit_max_width = u2_width ; return e_error ; } else { return ( IMPEG2D_ERROR_CODES_T ) IVD_RES_CHANGED ; } } } if ( ( ps_dec -> u2_horizontal_size > ps_dec -> u2_create_max_width ) || ( ps_dec -> u2_vertical_size > ps_dec -> u2_create_max_height ) ) { IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS ; ps_dec -> u2_reinit_max_height = ps_dec -> u2_vertical_size ; ps_dec -> u2_reinit_max_width = ps_dec -> u2_horizontal_size ; <S2SV_StartBug> return e_error ; <S2SV_EndBug> } ps_dec -> u2_aspect_ratio_info = impeg2d_bit_stream_get ( ps_stream , 4 ) ; ps_dec -> u2_frame_rate_code = impeg2d_bit_stream_get ( ps_stream , 4 ) ; if ( ps_dec -> u2_frame_rate_code > MPEG2_MAX_FRAME_RATE_CODE ) { return IMPEG2D_FRM_HDR_DECODE_ERR ; } impeg2d_bit_stream_flush ( ps_stream , 18 ) ; GET_MARKER_BIT ( ps_dec , ps_stream ) ; impeg2d_bit_stream_flush ( ps_stream , 11 ) ; if ( impeg2d_bit_stream_get_bit ( ps_stream ) == 1 ) { UWORD16 i ; for ( i = 0 ; i < NUM_PELS_IN_BLOCK ; i ++ ) { ps_dec -> au1_intra_quant_matrix [ gau1_impeg2_inv_scan_zig_zag [ i ] ] = ( UWORD8 ) impeg2d_bit_stream_get ( ps_stream , 8 ) ; } } else { memcpy ( ps_dec -> au1_intra_quant_matrix , gau1_impeg2_intra_quant_matrix_default , NUM_PELS_IN_BLOCK ) ; } if ( impeg2d_bit_stream_get_bit ( ps_stream ) == 1 ) { UWORD16 i ; for ( i = 0 ; i < NUM_PELS_IN_BLOCK ; i ++ ) { ps_dec -> au1_inter_quant_matrix [ gau1_impeg2_inv_scan_zig_zag [ i ] ] = ( UWORD8 ) impeg2d_bit_stream_get ( ps_stream , 8 ) ; } } else { memcpy ( ps_dec -> au1_inter_quant_matrix , gau1_impeg2_inter_quant_matrix_default , NUM_PELS_IN_BLOCK ) ; } impeg2d_next_start_code ( ps_dec ) ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = u2_height ; } else { <S2SV_ModStart> == ps_dec -> i4_pic_count ) { return ( IMPEG2D_ERROR_CODES_T ) IMPEG2D_FRM_HDR_DECODE_ERR ; } else if ( ( u2_width > ps_dec -> u2_create_max_width ) || ( u2_height > ps_dec -> u2_create_max_height ) ) { IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS ; ps_dec -> u2_reinit_max_height = u2_height ; ps_dec -> u2_reinit_max_width = u2_width ; return e_error <S2SV_ModEnd> ; } else <S2SV_ModStart> if ( ( ps_dec -> u2_horizontal_size < MIN_WIDTH <S2SV_ModEnd> ) || ( <S2SV_ModStart> ) || ( ps_dec -> u2_vertical_size < MIN_HEIGHT ) ) { return IMPEG2D_UNSUPPORTED_DIMENSIONS <S2SV_ModEnd> ; } else <S2SV_ModStart> ; return e_error ; } if ( ( ps_dec -> u2_horizontal_size < MIN_WIDTH ) || ( ps_dec -> u2_vertical_size < MIN_HEIGHT ) ) { return IMPEG2D_UNSUPPORTED_DIMENSIONS\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 static int jpc_pi_nextrpcl ( register jpc_pi_t * pi ) { int rlvlno ; jpc_pirlvl_t * pirlvl ; jpc_pchg_t * pchg ; int prchind ; int prcvind ; int * prclyrno ; int compno ; jpc_picomp_t * picomp ; int xstep ; int ystep ; uint_fast32_t r ; uint_fast32_t rpx ; uint_fast32_t rpy ; uint_fast32_t trx0 ; uint_fast32_t try0 ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { goto skip ; } else { pi -> xstep = 0 ; pi -> ystep = 0 ; for ( compno = 0 , picomp = pi -> picomps ; compno < pi -> numcomps ; ++ compno , ++ picomp ) { for ( rlvlno = 0 , pirlvl = picomp -> pirlvls ; rlvlno < picomp -> numrlvls ; ++ rlvlno , ++ pirlvl ) { <S2SV_StartBug> xstep = picomp -> hsamp * ( 1 << ( pirlvl -> prcwidthexpn + <S2SV_EndBug> picomp -> numrlvls - rlvlno - 1 ) ) ; <S2SV_StartBug> ystep = picomp -> vsamp * ( 1 << ( pirlvl -> prcheightexpn + <S2SV_EndBug> picomp -> numrlvls - rlvlno - 1 ) ) ; pi -> xstep = ( ! pi -> xstep ) ? xstep : JAS_MIN ( pi -> xstep , xstep ) ; pi -> ystep = ( ! pi -> ystep ) ? ystep : JAS_MIN ( pi -> ystep , ystep ) ; } } pi -> prgvolfirst = 0 ; } for ( pi -> rlvlno = pchg -> rlvlnostart ; pi -> rlvlno < pchg -> rlvlnoend && pi -> rlvlno < pi -> maxrlvls ; ++ pi -> rlvlno ) { for ( pi -> y = pi -> ystart ; pi -> y < pi -> yend ; pi -> y += pi -> ystep - ( pi -> y % pi -> ystep ) ) { for ( pi -> x = pi -> xstart ; pi -> x < pi -> xend ; pi -> x += pi -> xstep - ( pi -> x % pi -> xstep ) ) { for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < JAS_CAST ( int , pchg -> compnoend ) && pi -> compno < pi -> numcomps ; ++ pi -> compno , ++ pi -> picomp ) { if ( pi -> rlvlno >= pi -> picomp -> numrlvls ) { continue ; } pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; if ( pi -> pirlvl -> numprcs == 0 ) { continue ; } r = pi -> picomp -> numrlvls - 1 - pi -> rlvlno ; rpx = r + pi -> pirlvl -> prcwidthexpn ; rpy = r + pi -> pirlvl -> prcheightexpn ; trx0 = JPC_CEILDIV ( pi -> xstart , pi -> picomp -> hsamp << r ) ; try0 = JPC_CEILDIV ( pi -> ystart , pi -> picomp -> vsamp << r ) ; <S2SV_StartBug> if ( ( ( pi -> x == pi -> xstart && ( ( trx0 << r ) % ( 1 << rpx ) ) ) <S2SV_EndBug> <S2SV_StartBug> || ! ( pi -> x % ( 1 << rpx ) ) ) && <S2SV_EndBug> <S2SV_StartBug> ( ( pi -> y == pi -> ystart && ( ( try0 << r ) % ( 1 << rpy ) ) ) <S2SV_EndBug> <S2SV_StartBug> || ! ( pi -> y % ( 1 << rpy ) ) ) ) { <S2SV_EndBug> prchind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> x , pi -> picomp -> hsamp << r ) , pi -> pirlvl -> prcwidthexpn ) - JPC_FLOORDIVPOW2 ( trx0 , pi -> pirlvl -> prcwidthexpn ) ; prcvind = JPC_FLOORDIVPOW2 ( JPC_CEILDIV ( pi -> y , pi -> picomp -> vsamp << r ) , pi -> pirlvl -> prcheightexpn ) - JPC_FLOORDIVPOW2 ( try0 , pi -> pirlvl -> prcheightexpn ) ; pi -> prcno = prcvind * pi -> pirlvl -> numhprcs + prchind ; assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; if ( pi -> lyrno >= * prclyrno ) { ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pirlvl ) { if ( pirlvl -> prcwidthexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 || pirlvl -> prcheightexpn + pi -> picomp -> numrlvls > JAS_UINTFAST32_NUMBITS - 2 ) { return - 1 ; } <S2SV_ModStart> hsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> vsamp * ( JAS_CAST ( uint_fast32_t , 1 ) << <S2SV_ModEnd> ( pirlvl -> <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpx ) <S2SV_ModStart> x % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpx ) <S2SV_ModStart> ) % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpy ) <S2SV_ModStart> y % ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << rpy )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18625\n\n```\nCWE-000 static int StreamTcpPacketStateSynSent ( ThreadVars * tv , Packet * p , StreamTcpThread * stt , TcpSession * ssn , PacketQueue * pq ) { if ( ssn == NULL ) return - 1 ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>pkt<S2SV_blank>received:<S2SV_blank>%s\" , ssn , PKT_IS_TOCLIENT ( p ) ? \"toclient\" : \"toserver\" ) ; <S2SV_StartBug> if ( p -> tcph -> th_flags & TH_RST ) { <S2SV_EndBug> if ( ! StreamTcpValidateRst ( ssn , p ) ) return - 1 ; if ( PKT_IS_TOSERVER ( p ) ) { if ( SEQ_EQ ( TCP_GET_SEQ ( p ) , ssn -> client . isn ) && SEQ_EQ ( TCP_GET_WINDOW ( p ) , 0 ) && SEQ_EQ ( TCP_GET_ACK ( p ) , ( ssn -> client . isn + 1 ) ) ) { SCLogDebug ( \"ssn->server.flags<S2SV_blank>|=<S2SV_blank>STREAMTCP_STREAM_FLAG_RST_RECV\" ) ; ssn -> server . flags |= STREAMTCP_STREAM_FLAG_RST_RECV ; StreamTcpPacketSetState ( p , ssn , TCP_CLOSED ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>Reset<S2SV_blank>received<S2SV_blank>and<S2SV_blank>state<S2SV_blank>changed<S2SV_blank>to<S2SV_blank>\" \"TCP_CLOSED\" , ssn ) ; } } else { ssn -> client . flags |= STREAMTCP_STREAM_FLAG_RST_RECV ; SCLogDebug ( \"ssn->client.flags<S2SV_blank>|=<S2SV_blank>STREAMTCP_STREAM_FLAG_RST_RECV\" ) ; StreamTcpPacketSetState ( p , ssn , TCP_CLOSED ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>Reset<S2SV_blank>received<S2SV_blank>and<S2SV_blank>state<S2SV_blank>changed<S2SV_blank>to<S2SV_blank>\" \"TCP_CLOSED\" , ssn ) ; } } else if ( p -> tcph -> th_flags & TH_FIN ) { } else if ( ( p -> tcph -> th_flags & ( TH_SYN | TH_ACK ) ) == ( TH_SYN | TH_ACK ) ) { if ( ( ssn -> flags & STREAMTCP_FLAG_4WHS ) && PKT_IS_TOSERVER ( p ) ) { SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>SYN/ACK<S2SV_blank>received<S2SV_blank>on<S2SV_blank>4WHS<S2SV_blank>session\" , ssn ) ; if ( ! ( SEQ_EQ ( TCP_GET_ACK ( p ) , ssn -> server . isn + 1 ) ) ) { StreamTcpSetEvent ( p , STREAM_4WHS_SYNACK_WITH_WRONG_ACK ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>ACK<S2SV_blank>mismatch,<S2SV_blank>packet<S2SV_blank>ACK<S2SV_blank>%\" PRIu32 \"\" \"<S2SV_blank>!=<S2SV_blank>%\" PRIu32 \"<S2SV_blank>from<S2SV_blank>stream\" , ssn , TCP_GET_ACK ( p ) , ssn -> server . isn + 1 ) ; return - 1 ; } if ( ! ( SEQ_EQ ( TCP_GET_SEQ ( p ) , ssn -> client . isn ) ) ) { StreamTcpSetEvent ( p , STREAM_4WHS_SYNACK_WITH_WRONG_SYN ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>SEQ<S2SV_blank>mismatch,<S2SV_blank>packet<S2SV_blank>SEQ<S2SV_blank>%\" PRIu32 \"\" \"<S2SV_blank>!=<S2SV_blank>%\" PRIu32 \"<S2SV_blank>from<S2SV_blank>*first*<S2SV_blank>SYN<S2SV_blank>pkt\" , ssn , TCP_GET_SEQ ( p ) , ssn -> client . isn ) ; return - 1 ; } StreamTcpPacketSetState ( p , ssn , TCP_SYN_RECV ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>=~<S2SV_blank>4WHS<S2SV_blank>ssn<S2SV_blank>state<S2SV_blank>is<S2SV_blank>now<S2SV_blank>TCP_SYN_RECV\" , ssn ) ; ssn -> client . isn = TCP_GET_SEQ ( p ) ; STREAMTCP_SET_RA_BASE_SEQ ( & ssn -> client , ssn -> client . isn ) ; ssn -> client . next_seq = ssn -> client . isn + 1 ; ssn -> server . window = TCP_GET_WINDOW ( p ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>window<S2SV_blank>%\" PRIu32 \"\" , ssn , ssn -> client . window ) ; if ( ( TCP_HAS_TS ( p ) ) && ( ssn -> server . flags & STREAMTCP_STREAM_FLAG_TIMESTAMP ) ) { ssn -> client . last_ts = TCP_GET_TSVAL ( p ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>ssn->client.last_ts<S2SV_blank>%\" PRIu32 \"<S2SV_blank>\" \"ssn->server.last_ts<S2SV_blank>%\" PRIu32 \"\" , ssn , ssn -> client . last_ts , ssn -> server . last_ts ) ; ssn -> flags |= STREAMTCP_FLAG_TIMESTAMP ; ssn -> client . last_pkt_ts = p -> ts . tv_sec ; if ( ssn -> client . last_ts == 0 ) ssn -> client . flags |= STREAMTCP_STREAM_FLAG_ZERO_TIMESTAMP ; } else { ssn -> server . last_ts = 0 ; ssn -> client . last_ts = 0 ; ssn -> server . flags &= ~ STREAMTCP_STREAM_FLAG_ZERO_TIMESTAMP ; } ssn -> server . last_ack = TCP_GET_ACK ( p ) ; ssn -> client . last_ack = ssn -> client . isn + 1 ; if ( ( ssn -> flags & STREAMTCP_FLAG_SERVER_WSCALE ) && ( TCP_HAS_WSCALE ( p ) ) ) { ssn -> server . wscale = TCP_GET_WSCALE ( p ) ; } else { ssn -> server . wscale = 0 ; } if ( ( ssn -> flags & STREAMTCP_FLAG_CLIENT_SACKOK ) && TCP_GET_SACKOK ( p ) == 1 ) { ssn -> flags |= STREAMTCP_FLAG_SACKOK ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>SACK<S2SV_blank>permitted<S2SV_blank>for<S2SV_blank>4WHS<S2SV_blank>session\" , ssn ) ; } ssn -> client . next_win = ssn -> client . last_ack + ssn -> client . window ; ssn -> server . next_win = ssn -> server . last_ack + ssn -> server . window ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>ssn->client.next_win<S2SV_blank>%\" PRIu32 \"\" , ssn , ssn -> client . next_win ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>ssn->server.next_win<S2SV_blank>%\" PRIu32 \"\" , ssn , ssn -> server . next_win ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>ssn->client.isn<S2SV_blank>%\" PRIu32 \",<S2SV_blank>\" \"ssn->client.next_seq<S2SV_blank>%\" PRIu32 \",<S2SV_blank>\" \"ssn->client.last_ack<S2SV_blank>%\" PRIu32 \"<S2SV_blank>\" \"(ssn->server.last_ack<S2SV_blank>%\" PRIu32 \")\" , ssn , ssn -> client . isn , ssn -> client . next_seq , ssn -> client . last_ack , ssn -> server . last_ack ) ; return 0 ; } if ( PKT_IS_TOSERVER ( p ) ) { StreamTcpSetEvent ( p , STREAM_3WHS_SYNACK_IN_WRONG_DIRECTION ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>SYN/ACK<S2SV_blank>received<S2SV_blank>in<S2SV_blank>the<S2SV_blank>wrong<S2SV_blank>direction\" , ssn ) ; return - 1 ; } if ( ! ( TCP_HAS_TFO ( p ) || ( ssn -> flags & STREAMTCP_FLAG_TCP_FAST_OPEN ) ) ) { if ( ! ( SEQ_EQ ( TCP_GET_ACK ( p ) , ssn -> client . isn + 1 ) ) ) { StreamTcpSetEvent ( p , STREAM_3WHS_SYNACK_WITH_WRONG_ACK ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>ACK<S2SV_blank>mismatch,<S2SV_blank>packet<S2SV_blank>ACK<S2SV_blank>%\" PRIu32 \"<S2SV_blank>!=<S2SV_blank>\" \"%\" PRIu32 \"<S2SV_blank>from<S2SV_blank>stream\" , ssn , TCP_GET_ACK ( p ) , ssn -> client . isn + 1 ) ; return - 1 ; } } else { if ( ! ( SEQ_EQ ( TCP_GET_ACK ( p ) , ssn -> client . next_seq ) ) ) { StreamTcpSetEvent ( p , STREAM_3WHS_SYNACK_WITH_WRONG_ACK ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>(TFO)<S2SV_blank>ACK<S2SV_blank>mismatch,<S2SV_blank>packet<S2SV_blank>ACK<S2SV_blank>%\" PRIu32 \"<S2SV_blank>!=<S2SV_blank>\" \"%\" PRIu32 \"<S2SV_blank>from<S2SV_blank>stream\" , ssn , TCP_GET_ACK ( p ) , ssn -> client . next_seq ) ; return - 1 ; } SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>(TFO)<S2SV_blank>ACK<S2SV_blank>match,<S2SV_blank>packet<S2SV_blank>ACK<S2SV_blank>%\" PRIu32 \"<S2SV_blank>==<S2SV_blank>\" \"%\" PRIu32 \"<S2SV_blank>from<S2SV_blank>stream\" , ssn , TCP_GET_ACK ( p ) , ssn -> client . next_seq ) ; ssn -> flags |= STREAMTCP_FLAG_TCP_FAST_OPEN ; StreamTcpPacketSetState ( p , ssn , TCP_ESTABLISHED ) ; } StreamTcp3whsSynAckUpdate ( ssn , p , NULL ) ; } else if ( p -> tcph -> th_flags & TH_SYN ) { SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>SYN<S2SV_blank>packet<S2SV_blank>on<S2SV_blank>state<S2SV_blank>SYN_SENT...<S2SV_blank>resent\" , ssn ) ; if ( ssn -> flags & STREAMTCP_FLAG_4WHS ) { SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>SYN<S2SV_blank>packet<S2SV_blank>on<S2SV_blank>state<S2SV_blank>SYN_SENT...<S2SV_blank>resent<S2SV_blank>of<S2SV_blank>\" \"4WHS<S2SV_blank>SYN\" , ssn ) ; } if ( PKT_IS_TOCLIENT ( p ) ) { ssn -> flags |= STREAMTCP_FLAG_4WHS ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>STREAMTCP_FLAG_4WHS<S2SV_blank>flag<S2SV_blank>set\" , ssn ) ; ssn -> server . isn = TCP_GET_SEQ ( p ) ; STREAMTCP_SET_RA_BASE_SEQ ( & ssn -> server , ssn -> server . isn ) ; ssn -> server . next_seq = ssn -> server . isn + 1 ; if ( TCP_HAS_TS ( p ) ) { ssn -> server . last_ts = TCP_GET_TSVAL ( p ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>%02x\" , ssn , ssn -> server . last_ts ) ; if ( ssn -> server . last_ts == 0 ) ssn -> server . flags |= STREAMTCP_STREAM_FLAG_ZERO_TIMESTAMP ; ssn -> server . last_pkt_ts = p -> ts . tv_sec ; ssn -> server . flags |= STREAMTCP_STREAM_FLAG_TIMESTAMP ; } ssn -> server . window = TCP_GET_WINDOW ( p ) ; if ( TCP_HAS_WSCALE ( p ) ) { ssn -> flags |= STREAMTCP_FLAG_SERVER_WSCALE ; ssn -> server . wscale = TCP_GET_WSCALE ( p ) ; } else { ssn -> flags &= ~ STREAMTCP_FLAG_SERVER_WSCALE ; ssn -> server . wscale = 0 ; } if ( TCP_GET_SACKOK ( p ) == 1 ) { ssn -> flags |= STREAMTCP_FLAG_CLIENT_SACKOK ; } else { ssn -> flags &= ~ STREAMTCP_FLAG_CLIENT_SACKOK ; } SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>ssn->server.isn<S2SV_blank>%\" PRIu32 \",<S2SV_blank>\" \"ssn->server.next_seq<S2SV_blank>%\" PRIu32 \",<S2SV_blank>\" \"ssn->server.last_ack<S2SV_blank>%\" PRIu32 \"\" , ssn , ssn -> server . isn , ssn -> server . next_seq , ssn -> server . last_ack ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>4WHS<S2SV_blank>ssn->client.isn<S2SV_blank>%\" PRIu32 \",<S2SV_blank>\" \"ssn->client.next_seq<S2SV_blank>%\" PRIu32 \",<S2SV_blank>\" \"ssn->client.last_ack<S2SV_blank>%\" PRIu32 \"\" , ssn , ssn -> client . isn , ssn -> client . next_seq , ssn -> client . last_ack ) ; } } else if ( p -> tcph -> th_flags & TH_ACK ) { if ( stream_config . async_oneside == FALSE ) return 0 ; if ( ! ( SEQ_EQ ( TCP_GET_SEQ ( p ) , ssn -> client . next_seq ) ) ) { StreamTcpSetEvent ( p , STREAM_3WHS_ASYNC_WRONG_SEQ ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>SEQ<S2SV_blank>mismatch,<S2SV_blank>packet<S2SV_blank>SEQ<S2SV_blank>%\" PRIu32 \"<S2SV_blank>!=<S2SV_blank>\" \"%\" PRIu32 \"<S2SV_blank>from<S2SV_blank>stream\" , ssn , TCP_GET_SEQ ( p ) , ssn -> client . next_seq ) ; return - 1 ; } ssn -> flags |= STREAMTCP_FLAG_ASYNC ; StreamTcpPacketSetState ( p , ssn , TCP_ESTABLISHED ) ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>=~<S2SV_blank>ssn<S2SV_blank>state<S2SV_blank>is<S2SV_blank>now<S2SV_blank>TCP_ESTABLISHED\" , ssn ) ; ssn -> client . window = TCP_GET_WINDOW ( p ) ; ssn -> client . last_ack = TCP_GET_SEQ ( p ) ; ssn -> client . next_win = ssn -> client . last_ack + ssn -> client . window ; ssn -> server . isn = TCP_GET_ACK ( p ) - 1 ; STREAMTCP_SET_RA_BASE_SEQ ( & ssn -> server , ssn -> server . isn ) ; ssn -> server . next_seq = ssn -> server . isn + 1 ; ssn -> server . last_ack = ssn -> server . next_seq ; ssn -> server . next_win = ssn -> server . last_ack ; SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>synsent<S2SV_blank>=><S2SV_blank>Asynchronous<S2SV_blank>stream,<S2SV_blank>packet<S2SV_blank>SEQ\" \"<S2SV_blank>%\" PRIu32 \",<S2SV_blank>payload<S2SV_blank>size<S2SV_blank>%\" PRIu32 \"<S2SV_blank>(%\" PRIu32 \"),<S2SV_blank>\" \"ssn->client.next_seq<S2SV_blank>%\" PRIu32 \"\" , ssn , TCP_GET_SEQ ( p ) , p -> payload_len , TCP_GET_SEQ ( p ) + p -> payload_len , ssn -> client . next_seq ) ; if ( ssn -> flags & STREAMTCP_FLAG_SERVER_WSCALE ) { ssn -> client . wscale = TCP_WSCALE_MAX ; } if ( TCP_HAS_TS ( p ) && ( ssn -> client . flags & STREAMTCP_STREAM_FLAG_TIMESTAMP ) ) { ssn -> flags |= STREAMTCP_FLAG_TIMESTAMP ; ssn -> client . flags &= ~ STREAMTCP_STREAM_FLAG_TIMESTAMP ; ssn -> client . last_pkt_ts = p -> ts . tv_sec ; } else { ssn -> client . last_ts = 0 ; ssn -> client . flags &= ~ STREAMTCP_STREAM_FLAG_ZERO_TIMESTAMP ; } if ( ssn -> flags & STREAMTCP_FLAG_CLIENT_SACKOK ) { ssn -> flags |= STREAMTCP_FLAG_SACKOK ; } StreamTcpReassembleHandleSegment ( tv , stt -> ra_ctx , ssn , & ssn -> client , p , pq ) ; } else { SCLogDebug ( \"ssn<S2SV_blank>%p:<S2SV_blank>default<S2SV_blank>case\" , ssn ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( StateSynSentValidateTimestamp ( ssn , p ) == false ) return - 1 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-36316\n\n```\nCWE-120 static int pad_basic ( bn_t m , int * p_len , int m_len , int k_len , int operation ) { uint8_t pad = 0 ; <S2SV_StartBug> int result = RLC_OK ; <S2SV_EndBug> bn_t t ; RLC_TRY { bn_null ( t ) ; bn_new ( t ) ; switch ( operation ) { case RSA_ENC : case RSA_SIG : case RSA_SIG_HASH : bn_zero ( m ) ; bn_lsh ( m , m , 8 ) ; bn_add_dig ( m , m , RSA_PAD ) ; bn_lsh ( m , m , m_len * 8 ) ; break ; case RSA_DEC : case RSA_VER : case RSA_VER_HASH : m_len = k_len - 1 ; bn_rsh ( t , m , 8 * m_len ) ; <S2SV_StartBug> if ( ! bn_is_zero ( t ) ) { <S2SV_EndBug> <S2SV_StartBug> result = RLC_ERR ; <S2SV_EndBug> } * p_len = 1 ; do { ( * p_len ) ++ ; m_len -- ; bn_rsh ( t , m , 8 * m_len ) ; pad = ( uint8_t ) t -> dp [ 0 ] ; } while ( pad == 0 && m_len > 0 ) ; <S2SV_StartBug> if ( pad != RSA_PAD ) { <S2SV_EndBug> <S2SV_StartBug> result = RLC_ERR ; <S2SV_EndBug> } bn_mod_2b ( m , m , ( k_len - * p_len ) * 8 ) ; <S2SV_StartBug> break ; <S2SV_EndBug> } } RLC_CATCH_ANY { result = RLC_ERR ; } RLC_FINALLY { bn_free ( t ) ; } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int result = RLC_ERR ; bn_t t ; RLC_TRY { bn_null ( t ) ; bn_new ( t ) ; switch ( operation ) { case RSA_ENC : case RSA_SIG : case RSA_SIG_HASH : bn_zero ( m ) ; bn_lsh ( m , m , 8 ) ; bn_add_dig ( m , m , RSA_PAD ) ; bn_lsh ( m , m , m_len * 8 ) ; result = RLC_OK <S2SV_ModEnd> ; break ; <S2SV_ModStart> ; if ( <S2SV_ModEnd> bn_is_zero ( t <S2SV_ModStart> ) ) { <S2SV_ModEnd> * p_len = <S2SV_ModStart> if ( pad == <S2SV_ModEnd> RSA_PAD ) { <S2SV_ModStart> { result = RLC_OK <S2SV_ModEnd> ; } bn_mod_2b <S2SV_ModStart> 8 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static bool check_underflow ( const struct arpt_entry * e ) { const struct xt_entry_target * t ; unsigned int verdict ; <S2SV_StartBug> if ( ! unconditional ( & e -> arp ) ) <S2SV_EndBug> return false ; t = arpt_get_target_c ( e ) ; if ( strcmp ( t -> u . user . name , XT_STANDARD_TARGET ) != 0 ) return false ; verdict = ( ( struct xt_standard_target * ) t ) -> verdict ; verdict = - verdict - 1 ; return verdict == NF_DROP || verdict == NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! unconditional ( e <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void usage_exit ( ) { <S2SV_EndBug> fprintf ( stderr , \"Usage:<S2SV_blank>%s<S2SV_blank><infile><S2SV_blank><outfile>\\\\n\" , exec_name ) ; exit ( EXIT_FAILURE ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void usage_exit ( void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14400\n\n```\nCWE-000 static rfbBool rfbSetClientColourMapBGR233 ( rfbClientPtr cl ) { <S2SV_StartBug> char buf [ sz_rfbSetColourMapEntriesMsg + 256 * 3 * 2 ] ; <S2SV_EndBug> <S2SV_StartBug> rfbSetColourMapEntriesMsg * scme = ( rfbSetColourMapEntriesMsg * ) buf ; <S2SV_EndBug> <S2SV_StartBug> uint16_t * rgb = ( uint16_t * ) ( & buf [ sz_rfbSetColourMapEntriesMsg ] ) ; <S2SV_EndBug> int i , len ; int r , g , b ; if ( cl -> format . bitsPerPixel != 8 ) { rfbErr ( \"%s:<S2SV_blank>client<S2SV_blank>not<S2SV_blank>8<S2SV_blank>bits<S2SV_blank>per<S2SV_blank>pixel\\\\n\" , \"rfbSetClientColourMapBGR233\" ) ; rfbCloseClient ( cl ) ; return FALSE ; } scme -> type = rfbSetColourMapEntries ; scme -> firstColour = Swap16IfLE ( 0 ) ; scme -> nColours = Swap16IfLE ( 256 ) ; len = sz_rfbSetColourMapEntriesMsg ; i = 0 ; for ( b = 0 ; b < 4 ; b ++ ) { for ( g = 0 ; g < 8 ; g ++ ) { for ( r = 0 ; r < 8 ; r ++ ) { rgb [ i ++ ] = Swap16IfLE ( r * 65535 / 7 ) ; rgb [ i ++ ] = Swap16IfLE ( g * 65535 / 7 ) ; rgb [ i ++ ] = Swap16IfLE ( b * 65535 / 3 ) ; } } } len += 256 * 3 * 2 ; <S2SV_StartBug> if ( rfbWriteExact ( cl , buf , len ) < 0 ) { <S2SV_EndBug> rfbLogPerror ( \"rfbSetClientColourMapBGR233:<S2SV_blank>write\" ) ; rfbCloseClient ( cl ) ; return FALSE ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cl ) { union { char bytes <S2SV_ModEnd> [ sz_rfbSetColourMapEntriesMsg + <S2SV_ModStart> ] ; rfbSetColourMapEntriesMsg msg ; } buf ; rfbSetColourMapEntriesMsg * scme = & buf . msg <S2SV_ModEnd> ; uint16_t * <S2SV_ModStart> ( & buf . bytes <S2SV_ModStart> cl , buf . bytes\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16359\n\n```\nCWE-476 static Sdb * store_versioninfo_gnu_verdef ( ELFOBJ * bin , Elf_ ( Shdr ) * shdr , int sz ) { const char * section_name = \"\" ; const char * link_section_name = \"\" ; char * end = NULL ; Elf_ ( Shdr ) * link_shdr = NULL ; ut8 dfs [ sizeof ( Elf_ ( Verdef ) ) ] = { 0 } ; Sdb * sdb ; int cnt , i ; if ( shdr -> sh_link > bin -> ehdr . e_shnum ) { return false ; } link_shdr = & bin -> shdr [ shdr -> sh_link ] ; if ( ( int ) shdr -> sh_size < 1 ) { return false ; } Elf_ ( Verdef ) * defs = calloc ( shdr -> sh_size , sizeof ( char ) ) ; if ( ! defs ) { return false ; } if ( bin -> shstrtab && shdr -> sh_name < bin -> shstrtab_size ) { section_name = & bin -> shstrtab [ shdr -> sh_name ] ; } if ( link_shdr && bin -> shstrtab && link_shdr -> sh_name < bin -> shstrtab_size ) { link_section_name = & bin -> shstrtab [ link_shdr -> sh_name ] ; } if ( ! defs ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>(Check<S2SV_blank>Elf_(Verdef))\\\\n\" ) ; return NULL ; } sdb = sdb_new0 ( ) ; end = ( char * ) defs + shdr -> sh_size ; sdb_set ( sdb , \"section_name\" , section_name , 0 ) ; sdb_num_set ( sdb , \"entries\" , shdr -> sh_info , 0 ) ; sdb_num_set ( sdb , \"addr\" , shdr -> sh_addr , 0 ) ; sdb_num_set ( sdb , \"offset\" , shdr -> sh_offset , 0 ) ; sdb_num_set ( sdb , \"link\" , shdr -> sh_link , 0 ) ; sdb_set ( sdb , \"link_section_name\" , link_section_name , 0 ) ; for ( cnt = 0 , i = 0 ; i >= 0 && cnt < shdr -> sh_info && ( ( char * ) defs + i < end ) ; ++ cnt ) { Sdb * sdb_verdef = sdb_new0 ( ) ; char * vstart = ( ( char * ) defs ) + i ; <S2SV_StartBug> char key [ 32 ] = { 0 } ; <S2SV_EndBug> Elf_ ( Verdef ) * verdef = ( Elf_ ( Verdef ) * ) vstart ; Elf_ ( Verdaux ) aux = { 0 } ; int j = 0 ; int isum = 0 ; r_buf_read_at ( bin -> b , shdr -> sh_offset + i , dfs , sizeof ( Elf_ ( Verdef ) ) ) ; verdef -> vd_version = READ16 ( dfs , j ) verdef -> vd_flags = READ16 ( dfs , j ) verdef -> vd_ndx = READ16 ( dfs , j ) verdef -> vd_cnt = READ16 ( dfs , j ) verdef -> vd_hash = READ32 ( dfs , j ) verdef -> vd_aux = READ32 ( dfs , j ) verdef -> vd_next = READ32 ( dfs , j ) int vdaux = verdef -> vd_aux ; <S2SV_StartBug> if ( vdaux < 1 || vstart + vdaux < vstart ) { <S2SV_EndBug> sdb_free ( sdb_verdef ) ; goto out_error ; } <S2SV_StartBug> vstart += vdaux ; <S2SV_EndBug> if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { sdb_free ( sdb_verdef ) ; goto out_error ; } j = 0 ; aux . vda_name = READ32 ( vstart , j ) aux . vda_next = READ32 ( vstart , j ) isum = i + verdef -> vd_aux ; if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; goto out_error ; } sdb_num_set ( sdb_verdef , \"idx\" , i , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_version\" , verdef -> vd_version , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_ndx\" , verdef -> vd_ndx , 0 ) ; sdb_num_set ( sdb_verdef , \"vd_cnt\" , verdef -> vd_cnt , 0 ) ; sdb_set ( sdb_verdef , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; sdb_set ( sdb_verdef , \"flags\" , get_ver_flags ( verdef -> vd_flags ) , 0 ) ; for ( j = 1 ; j < verdef -> vd_cnt ; ++ j ) { int k ; Sdb * sdb_parent = sdb_new0 ( ) ; isum += aux . vda_next ; vstart += aux . vda_next ; <S2SV_StartBug> if ( vstart > end || vstart + sizeof ( Elf_ ( Verdaux ) ) > end ) { <S2SV_EndBug> sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } k = 0 ; aux . vda_name = READ32 ( vstart , k ) aux . vda_next = READ32 ( vstart , k ) if ( aux . vda_name > bin -> dynstr_size ) { sdb_free ( sdb_verdef ) ; sdb_free ( sdb_parent ) ; goto out_error ; } sdb_num_set ( sdb_parent , \"idx\" , isum , 0 ) ; sdb_num_set ( sdb_parent , \"parent\" , j , 0 ) ; sdb_set ( sdb_parent , \"vda_name\" , & bin -> dynstr [ aux . vda_name ] , 0 ) ; snprintf ( key , sizeof ( key ) , \"parent%d\" , j - 1 ) ; sdb_ns_set ( sdb_verdef , key , sdb_parent ) ; } snprintf ( key , sizeof ( key ) , \"verdef%d\" , cnt ) ; sdb_ns_set ( sdb , key , sdb_verdef ) ; if ( ! verdef -> vd_next ) { sdb_free ( sdb_verdef ) ; goto out_error ; } if ( ( st32 ) verdef -> vd_next < 1 ) { eprintf ( \"Warning:<S2SV_blank>Invalid<S2SV_blank>vd_next<S2SV_blank>in<S2SV_blank>the<S2SV_blank>ELF<S2SV_blank>version\\\\n\" ) ; break ; } i += verdef -> vd_next ; } free ( defs ) ; return sdb ; out_error : free ( defs ) ; sdb_free ( sdb ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + i ; size_t vstart_off = i ; <S2SV_ModStart> < 1 || shdr -> sh_size - vstart_off < vdaux <S2SV_ModEnd> ) { sdb_free <S2SV_ModStart> ; } vstart += vdaux ; vstart_off <S2SV_ModStart> . vda_next ; vstart_off += aux . vda_next ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2069\n\n```\nCWE-362 void flush_tlb_mm_range ( struct mm_struct * mm , unsigned long start , unsigned long end , unsigned long vmflag ) { unsigned long addr ; unsigned long base_pages_to_flush = TLB_FLUSH_ALL ; preempt_disable ( ) ; <S2SV_StartBug> if ( current -> active_mm != mm ) <S2SV_EndBug> <S2SV_StartBug> goto out ; <S2SV_EndBug> if ( ! current -> mm ) { leave_mm ( smp_processor_id ( ) ) ; <S2SV_StartBug> goto out ; <S2SV_EndBug> } if ( ( end != TLB_FLUSH_ALL ) && ! ( vmflag & VM_HUGETLB ) ) base_pages_to_flush = ( end - start ) >> PAGE_SHIFT ; if ( base_pages_to_flush > tlb_single_page_flush_ceiling ) { base_pages_to_flush = TLB_FLUSH_ALL ; count_vm_tlb_event ( NR_TLB_LOCAL_FLUSH_ALL ) ; local_flush_tlb ( ) ; } else { for ( addr = start ; addr < end ; addr += PAGE_SIZE ) { count_vm_tlb_event ( NR_TLB_LOCAL_FLUSH_ONE ) ; __flush_tlb_single ( addr ) ; } } trace_tlb_flush ( TLB_LOCAL_MM_SHOOTDOWN , base_pages_to_flush ) ; out : if ( base_pages_to_flush == TLB_FLUSH_ALL ) { start = 0UL ; end = TLB_FLUSH_ALL ; } if ( cpumask_any_but ( mm_cpumask ( mm ) , smp_processor_id ( ) ) < nr_cpu_ids ) flush_tlb_others ( mm_cpumask ( mm ) , mm , start , end ) ; preempt_enable ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != mm ) { smp_mb ( ) ; <S2SV_ModStart> goto out ; } <S2SV_ModStart> ) ) ; smp_mb ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4513\n\n```\nCWE-119 static ssize_t oz_cdev_write ( struct file * filp , const char __user * buf , size_t count , loff_t * fpos ) { struct oz_pd * pd ; struct oz_elt_buf * eb ; struct oz_elt_info * ei ; struct oz_elt * elt ; struct oz_app_hdr * app_hdr ; struct oz_serial_ctx * ctx ; <S2SV_StartBug> spin_lock_bh ( & g_cdev . lock ) ; <S2SV_EndBug> pd = g_cdev . active_pd ; if ( pd ) oz_pd_get ( pd ) ; spin_unlock_bh ( & g_cdev . lock ) ; if ( pd == NULL ) return - ENXIO ; if ( ! ( pd -> state & OZ_PD_S_CONNECTED ) ) return - EAGAIN ; eb = & pd -> elt_buff ; ei = oz_elt_info_alloc ( eb ) ; if ( ei == NULL ) { count = 0 ; goto out ; } elt = ( struct oz_elt * ) ei -> data ; app_hdr = ( struct oz_app_hdr * ) ( elt + 1 ) ; elt -> length = sizeof ( struct oz_app_hdr ) + count ; elt -> type = OZ_ELT_APP_DATA ; ei -> app_id = OZ_APPID_SERIAL ; ei -> length = elt -> length + sizeof ( struct oz_elt ) ; app_hdr -> app_id = OZ_APPID_SERIAL ; if ( copy_from_user ( app_hdr + 1 , buf , count ) ) goto out ; spin_lock_bh ( & pd -> app_lock [ OZ_APPID_USB - 1 ] ) ; ctx = ( struct oz_serial_ctx * ) pd -> app_ctx [ OZ_APPID_SERIAL - 1 ] ; if ( ctx ) { app_hdr -> elt_seq_num = ctx -> tx_seq_num ++ ; if ( ctx -> tx_seq_num == 0 ) ctx -> tx_seq_num = 1 ; spin_lock ( & eb -> lock ) ; if ( oz_queue_elt_info ( eb , 0 , 0 , ei ) == 0 ) ei = NULL ; spin_unlock ( & eb -> lock ) ; } spin_unlock_bh ( & pd -> app_lock [ OZ_APPID_USB - 1 ] ) ; out : if ( ei ) { count = 0 ; spin_lock_bh ( & eb -> lock ) ; oz_elt_info_free ( eb , ei ) ; spin_unlock_bh ( & eb -> lock ) ; } oz_pd_put ( pd ) ; return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx ; if ( count > sizeof ( ei -> data ) - sizeof ( * elt ) - sizeof ( * app_hdr ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20961\n\n```\nCWE-415 static int f_midi_set_alt ( struct usb_function * f , unsigned intf , unsigned alt ) { struct f_midi * midi = func_to_midi ( f ) ; unsigned i ; int err ; if ( intf != midi -> ms_id ) return 0 ; err = f_midi_start_ep ( midi , f , midi -> in_ep ) ; if ( err ) return err ; err = f_midi_start_ep ( midi , f , midi -> out_ep ) ; if ( err ) return err ; while ( kfifo_avail ( & midi -> in_req_fifo ) ) { struct usb_request * req = midi_alloc_ep_req ( midi -> in_ep , midi -> buflen ) ; if ( req == NULL ) return - ENOMEM ; req -> length = 0 ; req -> complete = f_midi_complete ; kfifo_put ( & midi -> in_req_fifo , req ) ; } for ( i = 0 ; i < midi -> qlen && err == 0 ; i ++ ) { struct usb_request * req = midi_alloc_ep_req ( midi -> out_ep , midi -> buflen ) ; if ( req == NULL ) return - ENOMEM ; req -> complete = f_midi_complete ; err = usb_ep_queue ( midi -> out_ep , req , GFP_ATOMIC ) ; if ( err ) { ERROR ( midi , \"%s:<S2SV_blank>couldn\\'t<S2SV_blank>enqueue<S2SV_blank>request:<S2SV_blank>%d\\\\n\" , midi -> out_ep -> name , err ) ; <S2SV_StartBug> free_ep_req ( midi -> out_ep , req ) ; <S2SV_EndBug> return err ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ) ; if ( req -> buf != NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-1155\n\n```\nCWE-20 static void server_real_connect ( SERVER_REC * server , IPADDR * ip , const char * unix_socket ) { GIOChannel * handle ; IPADDR * own_ip = NULL ; const char * errmsg ; char * errmsg2 ; char ipaddr [ MAX_IP_LEN ] ; int port ; g_return_if_fail ( ip != NULL || unix_socket != NULL ) ; signal_emit ( \"server<S2SV_blank>connecting\" , 2 , server , ip ) ; if ( server -> connrec -> no_connect ) return ; if ( ip != NULL ) { own_ip = ip == NULL ? NULL : ( IPADDR_IS_V6 ( ip ) ? server -> connrec -> own_ip6 : server -> connrec -> own_ip4 ) ; port = server -> connrec -> proxy != NULL ? server -> connrec -> proxy_port : server -> connrec -> port ; handle = server -> connrec -> use_ssl ? <S2SV_StartBug> net_connect_ip_ssl ( ip , port , own_ip , server -> connrec -> ssl_cert , server -> connrec -> ssl_pkey , <S2SV_EndBug> server -> connrec -> ssl_cafile , server -> connrec -> ssl_capath , server -> connrec -> ssl_verify ) : net_connect_ip ( ip , port , own_ip ) ; } else { handle = net_connect_unix ( unix_socket ) ; } if ( handle == NULL ) { errmsg = g_strerror ( errno ) ; errmsg2 = NULL ; if ( errno == EADDRNOTAVAIL ) { if ( own_ip != NULL ) { net_ip2host ( own_ip , ipaddr ) ; errmsg2 = g_strconcat ( errmsg , \":<S2SV_blank>\" , ipaddr , NULL ) ; } server -> no_reconnect = TRUE ; } if ( server -> connrec -> use_ssl && errno == ENOSYS ) server -> no_reconnect = TRUE ; server -> connection_lost = TRUE ; server_connect_failed ( server , errmsg2 ? errmsg2 : errmsg ) ; g_free ( errmsg2 ) ; } else { server -> handle = net_sendbuffer_create ( handle , 0 ) ; # ifdef HAVE_OPENSSL if ( server -> connrec -> use_ssl ) server_connect_callback_init_ssl ( server , handle ) ; else # endif server -> connect_tag = g_input_add ( handle , G_INPUT_WRITE | G_INPUT_READ , ( GInputFunction ) server_connect_callback_init , server ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , port , server -> connrec -> address ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int rc_pick_q_and_bounds_one_pass_cbr ( const VP9_COMP * cpi , int * bottom_index , int * top_index ) { const VP9_COMMON * const cm = & cpi -> common ; const RATE_CONTROL * const rc = & cpi -> rc ; int active_best_quality ; int active_worst_quality = calc_active_worst_quality_one_pass_cbr ( cpi ) ; int q ; <S2SV_StartBug> if ( frame_is_intra_only ( cm ) ) { <S2SV_EndBug> active_best_quality = rc -> best_quality ; if ( rc -> this_key_frame_forced ) { int qindex = rc -> last_boosted_qindex ; <S2SV_StartBug> double last_boosted_q = vp9_convert_qindex_to_q ( qindex ) ; <S2SV_EndBug> int delta_qindex = vp9_compute_qdelta ( rc , last_boosted_q , <S2SV_StartBug> ( last_boosted_q * 0.75 ) ) ; <S2SV_EndBug> active_best_quality = MAX ( qindex + delta_qindex , rc -> best_quality ) ; } else if ( cm -> current_video_frame > 0 ) { double q_adj_factor = 1.0 ; double q_val ; <S2SV_StartBug> active_best_quality = get_active_quality ( rc -> avg_frame_qindex [ KEY_FRAME ] , <S2SV_EndBug> <S2SV_StartBug> rc -> kf_boost , <S2SV_EndBug> kf_low , kf_high , kf_low_motion_minq , kf_high_motion_minq ) ; if ( ( cm -> width * cm -> height ) <= ( 352 * 288 ) ) { q_adj_factor -= 0.25 ; } <S2SV_StartBug> q_val = vp9_convert_qindex_to_q ( active_best_quality ) ; <S2SV_EndBug> active_best_quality += vp9_compute_qdelta ( rc , q_val , <S2SV_StartBug> q_val * q_adj_factor ) ; <S2SV_EndBug> } } else if ( ! rc -> is_src_frame_alt_ref && ! cpi -> use_svc && ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) ) { if ( rc -> frames_since_key > 1 && rc -> avg_frame_qindex [ INTER_FRAME ] < active_worst_quality ) { q = rc -> avg_frame_qindex [ INTER_FRAME ] ; } else { q = active_worst_quality ; } <S2SV_StartBug> active_best_quality = get_active_quality ( <S2SV_EndBug> q , rc -> gfu_boost , gf_low , gf_high , gf_low_motion_minq , gf_high_motion_minq ) ; } else { if ( cm -> current_video_frame > 1 ) { if ( rc -> avg_frame_qindex [ INTER_FRAME ] < active_worst_quality ) <S2SV_StartBug> active_best_quality = inter_minq [ rc -> avg_frame_qindex [ INTER_FRAME ] ] ; <S2SV_EndBug> else <S2SV_StartBug> active_best_quality = inter_minq [ active_worst_quality ] ; <S2SV_EndBug> } else { if ( rc -> avg_frame_qindex [ KEY_FRAME ] < active_worst_quality ) <S2SV_StartBug> active_best_quality = inter_minq [ rc -> avg_frame_qindex [ KEY_FRAME ] ] ; <S2SV_EndBug> else <S2SV_StartBug> active_best_quality = inter_minq [ active_worst_quality ] ; <S2SV_EndBug> } } active_best_quality = clamp ( active_best_quality , rc -> best_quality , rc -> worst_quality ) ; active_worst_quality = clamp ( active_worst_quality , active_best_quality , rc -> worst_quality ) ; * top_index = active_worst_quality ; * bottom_index = active_best_quality ; # if LIMIT_QRANGE_FOR_ALTREF_AND_KEY <S2SV_StartBug> if ( cm -> frame_type == KEY_FRAME && ! rc -> this_key_frame_forced ) { <S2SV_EndBug> if ( ! ( cm -> current_video_frame == 0 ) ) <S2SV_StartBug> * top_index = ( active_worst_quality + active_best_quality * 3 ) / 4 ; <S2SV_EndBug> } # endif if ( cm -> frame_type == KEY_FRAME && rc -> this_key_frame_forced ) { q = rc -> last_boosted_qindex ; } else { q = vp9_rc_regulate_q ( cpi , rc -> this_frame_target , active_best_quality , active_worst_quality ) ; if ( q > * top_index ) { if ( rc -> this_frame_target >= rc -> max_frame_bandwidth ) * top_index = q ; else q = * top_index ; } } assert ( * top_index <= rc -> worst_quality && * top_index >= rc -> best_quality ) ; assert ( * bottom_index <= rc -> worst_quality && * bottom_index >= rc -> best_quality ) ; assert ( q <= rc -> worst_quality && q >= rc -> best_quality ) ; return q ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int q ; int * rtc_minq ; ASSIGN_MINQ_TABLE ( cm -> bit_depth , rtc_minq ) ; <S2SV_ModStart> vp9_convert_qindex_to_q ( qindex , cm -> bit_depth <S2SV_ModStart> * 0.75 ) , cm -> bit_depth <S2SV_ModStart> ; active_best_quality = get_kf_active_quality ( rc , <S2SV_ModEnd> rc -> avg_frame_qindex <S2SV_ModStart> KEY_FRAME ] , cm -> bit_depth <S2SV_ModEnd> ) ; if <S2SV_ModStart> vp9_convert_qindex_to_q ( active_best_quality , cm -> bit_depth <S2SV_ModStart> q_val * q_adj_factor , cm -> bit_depth <S2SV_ModStart> } active_best_quality = get_gf_active_quality ( rc , q , cm -> bit_depth <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) active_best_quality = rtc_minq <S2SV_ModEnd> [ rc -> <S2SV_ModStart> else active_best_quality = rtc_minq <S2SV_ModEnd> [ active_worst_quality ] <S2SV_ModStart> ) active_best_quality = rtc_minq <S2SV_ModEnd> [ rc -> <S2SV_ModStart> else active_best_quality = rtc_minq <S2SV_ModEnd> [ active_worst_quality ] <S2SV_ModStart> rc -> this_key_frame_forced && <S2SV_ModEnd> ! ( cm <S2SV_ModStart> 0 ) ) { int qdelta = 0 ; vpx_clear_system_state ( ) ; qdelta = vp9_compute_qdelta_by_rate ( & cpi -> rc , cm -> frame_type , active_worst_quality , 2.0 , cm -> bit_depth ) ; * top_index = active_worst_quality + qdelta ; * top_index = ( * top_index > * bottom_index ) ? * top_index : * bottom_index <S2SV_ModEnd> ; } #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010293\n\n```\nCWE-787 TEE_Result tee_mmu_check_access_rights ( const struct user_ta_ctx * utc , uint32_t flags , uaddr_t uaddr , size_t len ) { uaddr_t a ; <S2SV_StartBug> size_t addr_incr = MIN ( CORE_MMU_USER_CODE_SIZE , <S2SV_EndBug> CORE_MMU_USER_PARAM_SIZE ) ; <S2SV_StartBug> if ( ADD_OVERFLOW ( uaddr , len , & a ) ) <S2SV_EndBug> return TEE_ERROR_ACCESS_DENIED ; if ( ( flags & TEE_MEMORY_ACCESS_NONSECURE ) && ( flags & TEE_MEMORY_ACCESS_SECURE ) ) return TEE_ERROR_ACCESS_DENIED ; if ( ! ( flags & TEE_MEMORY_ACCESS_ANY_OWNER ) && ! tee_mmu_is_vbuf_inside_ta_private ( utc , ( void * ) uaddr , len ) ) return TEE_ERROR_ACCESS_DENIED ; <S2SV_StartBug> for ( a = uaddr ; a < ( uaddr + len ) ; a += addr_incr ) { <S2SV_EndBug> uint32_t attr ; TEE_Result res ; res = tee_mmu_user_va2pa_attr ( utc , ( void * ) a , NULL , & attr ) ; if ( res != TEE_SUCCESS ) return res ; if ( ( flags & TEE_MEMORY_ACCESS_NONSECURE ) && ( attr & TEE_MATTR_SECURE ) ) return TEE_ERROR_ACCESS_DENIED ; if ( ( flags & TEE_MEMORY_ACCESS_SECURE ) && ! ( attr & TEE_MATTR_SECURE ) ) return TEE_ERROR_ACCESS_DENIED ; if ( ( flags & TEE_MEMORY_ACCESS_WRITE ) && ! ( attr & TEE_MATTR_UW ) ) return TEE_ERROR_ACCESS_DENIED ; if ( ( flags & TEE_MEMORY_ACCESS_READ ) && ! ( attr & TEE_MATTR_UR ) ) return TEE_ERROR_ACCESS_DENIED ; } return TEE_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uaddr_t a ; uaddr_t end_addr = 0 ; <S2SV_ModStart> len , & end_addr <S2SV_ModEnd> ) ) return <S2SV_ModStart> ( a = ROUNDDOWN ( uaddr , addr_incr ) <S2SV_ModEnd> ; a < <S2SV_ModStart> ; a < end_addr <S2SV_ModEnd> ; a +=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_slice ( void * _o ) { slice_ty o = ( slice_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } switch ( o -> kind ) { case Slice_kind : result = PyType_GenericNew ( Slice_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Slice . lower ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_lower , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Slice . upper ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_upper , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Slice . step ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_step , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case ExtSlice_kind : result = PyType_GenericNew ( ExtSlice_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . ExtSlice . dims , ast2obj_slice ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_dims , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Index_kind : result = PyType_GenericNew ( Index_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Index . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; } return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } switch\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int em_call_far ( struct x86_emulate_ctxt * ctxt ) { u16 sel , old_cs ; ulong old_eip ; int rc ; <S2SV_StartBug> old_cs = get_segment_selector ( ctxt , VCPU_SREG_CS ) ; <S2SV_EndBug> old_eip = ctxt -> _eip ; memcpy ( & sel , ctxt -> src . valptr + ctxt -> op_bytes , 2 ) ; <S2SV_StartBug> if ( load_segment_descriptor ( ctxt , sel , VCPU_SREG_CS ) ) <S2SV_EndBug> return X86EMUL_CONTINUE ; <S2SV_StartBug> ctxt -> _eip = 0 ; <S2SV_EndBug> memcpy ( & ctxt -> _eip , ctxt -> src . valptr , ctxt -> op_bytes ) ; ctxt -> src . val = old_cs ; rc = em_push ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; ctxt -> src . val = old_eip ; return em_push ( ctxt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int rc ; struct desc_struct old_desc , new_desc ; const struct x86_emulate_ops * ops = ctxt -> ops ; int cpl = ctxt -> ops -> cpl ( ctxt ) ; old_eip = ctxt -> _eip ; ops -> get_segment ( ctxt , & old_cs , & old_desc , NULL <S2SV_ModEnd> , VCPU_SREG_CS ) <S2SV_ModStart> , VCPU_SREG_CS ) <S2SV_ModEnd> ; memcpy ( <S2SV_ModStart> 2 ) ; rc = __load_segment_descriptor <S2SV_ModEnd> ( ctxt , <S2SV_ModStart> sel , VCPU_SREG_CS , cpl , false , & new_desc ) ; if ( rc != X86EMUL_CONTINUE <S2SV_ModEnd> ) return X86EMUL_CONTINUE <S2SV_ModStart> return X86EMUL_CONTINUE ; rc = assign_eip_far ( ctxt , ctxt -> src . val , new_desc . l ) ; if ( rc != X86EMUL_CONTINUE ) goto fail ; ctxt -> src . val = old_cs ; rc = em_push ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) goto fail ; ctxt -> src . val = old_eip ; rc = em_push ( ctxt ) ; if ( rc != X86EMUL_CONTINUE ) goto fail ; return rc ; fail : ops -> set_segment ( ctxt , old_cs , & old_desc , 0 , VCPU_SREG_CS ) ; return rc <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8786\n\n```\nCWE-119 BITMAP_UPDATE * update_read_bitmap_update ( rdpUpdate * update , wStream * s ) { UINT32 i ; BITMAP_UPDATE * bitmapUpdate = calloc ( 1 , sizeof ( BITMAP_UPDATE ) ) ; if ( ! bitmapUpdate ) goto fail ; if ( Stream_GetRemainingLength ( s ) < 2 ) goto fail ; Stream_Read_UINT16 ( s , bitmapUpdate -> number ) ; WLog_Print ( update -> log , WLOG_TRACE , \"BitmapUpdate:<S2SV_blank>%\" PRIu32 \"\" , bitmapUpdate -> number ) ; if ( bitmapUpdate -> number > bitmapUpdate -> count ) { <S2SV_StartBug> UINT16 count ; <S2SV_EndBug> BITMAP_DATA * newdata ; count = bitmapUpdate -> number * 2 ; <S2SV_StartBug> newdata = ( BITMAP_DATA * ) realloc ( bitmapUpdate -> rectangles , <S2SV_EndBug> sizeof ( BITMAP_DATA ) * count ) ; if ( ! newdata ) goto fail ; bitmapUpdate -> rectangles = newdata ; ZeroMemory ( & bitmapUpdate -> rectangles [ bitmapUpdate -> count ] , sizeof ( BITMAP_DATA ) * ( count - bitmapUpdate -> count ) ) ; bitmapUpdate -> count = count ; } for ( i = 0 ; i < bitmapUpdate -> number ; i ++ ) { if ( ! update_read_bitmap_data ( update , s , & bitmapUpdate -> rectangles [ i ] ) ) goto fail ; } return bitmapUpdate ; fail : free_bitmap_update ( update -> context , bitmapUpdate ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> count ) { UINT32 <S2SV_ModEnd> count = bitmapUpdate <S2SV_ModStart> * 2 ; BITMAP_DATA *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10929\n\n```\nCWE-119 grub_err_t grub_disk_read ( grub_disk_t disk , grub_disk_addr_t sector , grub_off_t offset , grub_size_t size , void * buf ) { char * tmp_buf ; unsigned real_offset ; if ( grub_disk_adjust_range ( disk , & sector , & offset , size ) != GRUB_ERR_NONE ) { grub_error_push ( ) ; grub_dprintf ( \"disk\" , \"Read<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range:<S2SV_blank>sector<S2SV_blank>0x%llx<S2SV_blank>(%s).\\\\n\" , ( unsigned long long ) sector , grub_errmsg ) ; grub_error_pop ( ) ; return grub_errno ; } real_offset = offset ; tmp_buf = grub_malloc ( GRUB_DISK_SECTOR_SIZE << GRUB_DISK_CACHE_BITS ) ; if ( ! tmp_buf ) return grub_errno ; while ( size ) { char * data ; grub_disk_addr_t start_sector ; grub_size_t len ; grub_size_t pos ; start_sector = sector & ~ ( GRUB_DISK_CACHE_SIZE - 1 ) ; pos = ( sector - start_sector ) << GRUB_DISK_SECTOR_BITS ; len = ( ( GRUB_DISK_SECTOR_SIZE << GRUB_DISK_CACHE_BITS ) - pos - real_offset ) ; if ( len > size ) len = size ; data = grub_disk_cache_fetch ( disk -> dev -> id , disk -> id , start_sector ) ; if ( data ) { <S2SV_StartBug> if ( buf ) <S2SV_EndBug> <S2SV_StartBug> grub_memcpy ( buf , data + pos + real_offset , len ) ; <S2SV_EndBug> grub_disk_cache_unlock ( disk -> dev -> id , disk -> id , start_sector ) ; } else { if ( start_sector + GRUB_DISK_CACHE_SIZE > disk -> total_sectors || ( disk -> dev -> read ) ( disk , start_sector , GRUB_DISK_CACHE_SIZE , tmp_buf ) != GRUB_ERR_NONE ) { unsigned num ; char * p ; grub_errno = GRUB_ERR_NONE ; num = ( ( size + real_offset + GRUB_DISK_SECTOR_SIZE - 1 ) >> GRUB_DISK_SECTOR_BITS ) ; p = grub_realloc ( tmp_buf , num << GRUB_DISK_SECTOR_BITS ) ; if ( ! p ) goto finish ; tmp_buf = p ; if ( ( disk -> dev -> read ) ( disk , sector , num , tmp_buf ) ) { grub_error_push ( ) ; grub_dprintf ( \"disk\" , \"%s<S2SV_blank>read<S2SV_blank>failed\\\\n\" , disk -> name ) ; grub_error_pop ( ) ; goto finish ; } if ( buf ) grub_memcpy ( buf , tmp_buf + real_offset , size ) ; if ( disk -> read_hook ) while ( size ) { grub_size_t to_read ; to_read = size ; if ( real_offset + to_read > GRUB_DISK_SECTOR_SIZE ) to_read = GRUB_DISK_SECTOR_SIZE - real_offset ; ( disk -> read_hook ) ( sector , real_offset , to_read , disk -> closure ) ; if ( grub_errno != GRUB_ERR_NONE ) goto finish ; sector ++ ; size -= to_read ; real_offset = 0 ; } goto finish ; } if ( buf ) grub_memcpy ( buf , tmp_buf + pos + real_offset , len ) ; grub_disk_cache_store ( disk -> dev -> id , disk -> id , start_sector , tmp_buf ) ; } if ( disk -> read_hook ) { grub_disk_addr_t s = sector ; grub_size_t l = len ; while ( l ) { ( disk -> read_hook ) ( s , real_offset , ( ( l > GRUB_DISK_SECTOR_SIZE ) ? GRUB_DISK_SECTOR_SIZE : l ) , disk -> closure ) ; if ( l < GRUB_DISK_SECTOR_SIZE - real_offset ) break ; s ++ ; l -= GRUB_DISK_SECTOR_SIZE - real_offset ; real_offset = 0 ; } } sector = start_sector + GRUB_DISK_CACHE_SIZE ; if ( buf ) buf = ( char * ) buf + len ; size -= len ; real_offset = 0 ; } finish : grub_free ( tmp_buf ) ; return grub_errno ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( buf ) { if ( pos + real_offset + len >= size ) { grub_errno = GRUB_ERR_BAD_FS ; return grub_errno ; } <S2SV_ModStart> len ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6413\n\n```\nCWE-287 <S2SV_StartBug> static void oidc_scrub_headers ( request_rec * r ) { <S2SV_EndBug> oidc_cfg * cfg = ap_get_module_config ( r -> server -> module_config , & auth_openidc_module ) ; if ( cfg -> scrub_request_headers != 0 ) { oidc_scrub_request_headers ( r , OIDC_DEFAULT_HEADER_PREFIX , oidc_cfg_dir_authn_header ( r ) ) ; if ( ( strstr ( cfg -> claim_prefix , OIDC_DEFAULT_HEADER_PREFIX ) != cfg -> claim_prefix ) ) { oidc_scrub_request_headers ( r , cfg -> claim_prefix , NULL ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> void oidc_scrub_headers (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15158\n\n```\nCWE-119 TpktState CotpConnection_readToTpktBuffer ( CotpConnection * self ) { uint8_t * buffer = self -> readBuffer -> buffer ; int bufferSize = self -> readBuffer -> maxSize ; int bufPos = self -> readBuffer -> size ; assert ( bufferSize > 4 ) ; int readBytes ; if ( bufPos < 4 ) { readBytes = readFromSocket ( self , buffer + bufPos , 4 - bufPos ) ; if ( readBytes < 0 ) goto exit_closed ; if ( DEBUG_COTP ) { if ( readBytes > 0 ) printf ( \"TPKT:<S2SV_blank>read<S2SV_blank>%i<S2SV_blank>bytes<S2SV_blank>from<S2SV_blank>socket\\\\n\" , readBytes ) ; } bufPos += readBytes ; if ( bufPos == 4 ) { if ( ( buffer [ 0 ] == 3 ) && ( buffer [ 1 ] == 0 ) ) { self -> packetSize = ( buffer [ 2 ] * 0x100 ) + buffer [ 3 ] ; if ( DEBUG_COTP ) printf ( \"TPKT:<S2SV_blank>header<S2SV_blank>complete<S2SV_blank>(msg<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%i)\\\\n\" , self -> packetSize ) ; if ( self -> packetSize > bufferSize ) { if ( DEBUG_COTP ) printf ( \"TPKT:<S2SV_blank>packet<S2SV_blank>too<S2SV_blank>large\\\\n\" ) ; goto exit_error ; } } else { if ( DEBUG_COTP ) printf ( \"TPKT:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>TPKT<S2SV_blank>header.\\\\n\" ) ; goto exit_error ; } } else goto exit_waiting ; } <S2SV_StartBug> readBytes = readFromSocket ( self , buffer + bufPos , self -> packetSize - bufPos ) ; <S2SV_EndBug> if ( readBytes < 0 ) goto exit_closed ; bufPos += readBytes ; if ( bufPos < self -> packetSize ) goto exit_waiting ; if ( DEBUG_COTP ) printf ( \"TPKT:<S2SV_blank>message<S2SV_blank>complete<S2SV_blank>(size<S2SV_blank>=<S2SV_blank>%i)\\\\n\" , self -> packetSize ) ; self -> readBuffer -> size = bufPos ; return TPKT_PACKET_COMPLETE ; exit_closed : if ( DEBUG_COTP ) printf ( \"TPKT:<S2SV_blank>socket<S2SV_blank>closed<S2SV_blank>or<S2SV_blank>socket<S2SV_blank>error\\\\n\" ) ; return TPKT_ERROR ; exit_error : if ( DEBUG_COTP ) printf ( \"TPKT:<S2SV_blank>Error<S2SV_blank>parsing<S2SV_blank>message\\\\n\" ) ; return TPKT_ERROR ; exit_waiting : if ( DEBUG_COTP ) if ( bufPos != 0 ) printf ( \"TPKT:<S2SV_blank>waiting<S2SV_blank>(read<S2SV_blank>%i<S2SV_blank>of<S2SV_blank>%i)\\\\n\" , bufPos , self -> packetSize ) ; self -> readBuffer -> size = bufPos ; return TPKT_WAITING ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exit_waiting ; } if ( self -> packetSize <= bufPos ) goto exit_error ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-000 void * Sys_LoadDll ( const char * name , qboolean useSystemLib ) { <S2SV_StartBug> void * dllhandle ; <S2SV_EndBug> if ( useSystemLib ) Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name ) ; if ( ! useSystemLib || ! ( dllhandle = Sys_LoadLibrary ( name ) ) ) { const char * topDir ; char libPath [ MAX_OSPATH ] ; topDir = Sys_BinaryPath ( ) ; if ( ! * topDir ) topDir = \".\" ; Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , topDir ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , topDir , PATH_SEP , name ) ; if ( ! ( dllhandle = Sys_LoadLibrary ( libPath ) ) ) { const char * basePath = Cvar_VariableString ( \"fs_basepath\" ) ; if ( ! basePath || ! * basePath ) basePath = \".\" ; if ( FS_FilenameCompare ( topDir , basePath ) ) { Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , basePath ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , basePath , PATH_SEP , name ) ; dllhandle = Sys_LoadLibrary ( libPath ) ; } if ( ! dllhandle ) Com_Printf ( \"Loading<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>failed\\\\n\" , name ) ; } } return dllhandle ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * dllhandle ; if ( COM_CompareExtension ( name , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , name ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14680\n\n```\nCWE-20 static unsigned char * read_chunk ( struct mschm_decompressor_p * self , struct mschmd_header * chm , struct mspack_file * fh , unsigned int chunk_num ) { struct mspack_system * sys = self -> system ; unsigned char * buf ; <S2SV_StartBug> if ( chunk_num > chm -> num_chunks ) return NULL ; <S2SV_EndBug> if ( ! chm -> chunk_cache ) { size_t size = sizeof ( unsigned char * ) * chm -> num_chunks ; if ( ! ( chm -> chunk_cache = ( unsigned char * * ) sys -> alloc ( sys , size ) ) ) { self -> error = MSPACK_ERR_NOMEMORY ; return NULL ; } memset ( chm -> chunk_cache , 0 , size ) ; } if ( chm -> chunk_cache [ chunk_num ] ) return chm -> chunk_cache [ chunk_num ] ; if ( ! ( buf = ( unsigned char * ) sys -> alloc ( sys , chm -> chunk_size ) ) ) { self -> error = MSPACK_ERR_NOMEMORY ; return NULL ; } if ( sys -> seek ( fh , ( off_t ) ( chm -> dir_offset + ( chunk_num * chm -> chunk_size ) ) , MSPACK_SYS_SEEK_START ) ) { self -> error = MSPACK_ERR_SEEK ; sys -> free ( buf ) ; return NULL ; } if ( sys -> read ( fh , buf , ( int ) chm -> chunk_size ) != ( int ) chm -> chunk_size ) { self -> error = MSPACK_ERR_READ ; sys -> free ( buf ) ; return NULL ; } if ( ! ( ( buf [ 0 ] == 0x50 ) && ( buf [ 1 ] == 0x4D ) && ( buf [ 2 ] == 0x47 ) && ( ( buf [ 3 ] == 0x4C ) || ( buf [ 3 ] == 0x49 ) ) ) ) { self -> error = MSPACK_ERR_SEEK ; sys -> free ( buf ) ; return NULL ; } return chm -> chunk_cache [ chunk_num ] = buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( chunk_num >= <S2SV_ModEnd> chm -> num_chunks\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-1152\n\n```\nCWE-20 static int try_read_command ( conn * c ) { assert ( c != NULL ) ; assert ( c -> rcurr <= ( c -> rbuf + c -> rsize ) ) ; assert ( c -> rbytes > 0 ) ; if ( c -> protocol == negotiating_prot || c -> transport == udp_transport ) { if ( ( unsigned char ) c -> rbuf [ 0 ] == ( unsigned char ) PROTOCOL_BINARY_REQ ) { c -> protocol = binary_prot ; } else { c -> protocol = ascii_prot ; } if ( settings . verbose > 1 ) { fprintf ( stderr , \"%d:<S2SV_blank>Client<S2SV_blank>using<S2SV_blank>the<S2SV_blank>%s<S2SV_blank>protocol\\\\n\" , c -> sfd , prot_text ( c -> protocol ) ) ; } } if ( c -> protocol == binary_prot ) { if ( c -> rbytes < sizeof ( c -> binary_header ) ) { return 0 ; } else { # ifdef NEED_ALIGN if ( ( ( long ) ( c -> rcurr ) ) % 8 != 0 ) { memmove ( c -> rbuf , c -> rcurr , c -> rbytes ) ; c -> rcurr = c -> rbuf ; if ( settings . verbose > 1 ) { fprintf ( stderr , \"%d:<S2SV_blank>Realign<S2SV_blank>input<S2SV_blank>buffer\\\\n\" , c -> sfd ) ; } } # endif protocol_binary_request_header * req ; req = ( protocol_binary_request_header * ) c -> rcurr ; if ( settings . verbose > 1 ) { int ii ; fprintf ( stderr , \"<%d<S2SV_blank>Read<S2SV_blank>binary<S2SV_blank>protocol<S2SV_blank>data:\" , c -> sfd ) ; for ( ii = 0 ; ii < sizeof ( req -> bytes ) ; ++ ii ) { if ( ii % 4 == 0 ) { fprintf ( stderr , \"\\\\n<%d<S2SV_blank><S2SV_blank><S2SV_blank>\" , c -> sfd ) ; } fprintf ( stderr , \"<S2SV_blank>0x%02x\" , req -> bytes [ ii ] ) ; } fprintf ( stderr , \"\\\\n\" ) ; } c -> binary_header = * req ; c -> binary_header . request . keylen = ntohs ( req -> request . keylen ) ; c -> binary_header . request . bodylen = ntohl ( req -> request . bodylen ) ; c -> binary_header . request . cas = ntohll ( req -> request . cas ) ; if ( c -> binary_header . request . magic != PROTOCOL_BINARY_REQ ) { if ( settings . verbose ) { fprintf ( stderr , \"Invalid<S2SV_blank>magic:<S2SV_blank><S2SV_blank>%x\\\\n\" , c -> binary_header . request . magic ) ; } conn_set_state ( c , conn_closing ) ; return - 1 ; } c -> msgcurr = 0 ; c -> msgused = 0 ; c -> iovused = 0 ; if ( add_msghdr ( c ) != 0 ) { out_string ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\" ) ; return 0 ; } c -> cmd = c -> binary_header . request . opcode ; c -> keylen = c -> binary_header . request . keylen ; c -> opaque = c -> binary_header . request . opaque ; c -> cas = 0 ; dispatch_bin_command ( c ) ; c -> rbytes -= sizeof ( c -> binary_header ) ; c -> rcurr += sizeof ( c -> binary_header ) ; } } else { char * el , * cont ; if ( c -> rbytes == 0 ) return 0 ; el = memchr ( c -> rcurr , '\\\\n' , c -> rbytes ) ; <S2SV_StartBug> if ( ! el ) <S2SV_EndBug> return 0 ; cont = el + 1 ; if ( ( el - c -> rcurr ) > 1 && * ( el - 1 ) == '\\\\r' ) { el -- ; } * el = '\\\\0' ; assert ( cont <= ( c -> rcurr + c -> rbytes ) ) ; process_command ( c , c -> rcurr ) ; c -> rbytes -= ( cont - c -> rcurr ) ; c -> rcurr = cont ; assert ( c -> rcurr <= ( c -> rbuf + c -> rsize ) ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! el ) { if ( c -> rbytes > 1024 ) { char * ptr = c -> rcurr ; while ( * ptr == '<S2SV_blank>' ) { ++ ptr ; } if ( strcmp ( ptr , \"get<S2SV_blank>\" ) && strcmp ( ptr , \"gets<S2SV_blank>\" ) ) { conn_set_state ( c , conn_closing ) ; return 1 ; } } return 0 ; } <S2SV_ModEnd> cont = el\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16526\n\n```\nCWE-119 void uwbd_start ( struct uwb_rc * rc ) { <S2SV_StartBug> rc -> uwbd . task = kthread_run ( uwbd , rc , \"uwbd\" ) ; <S2SV_EndBug> <S2SV_StartBug> if ( rc -> uwbd . task == NULL ) <S2SV_EndBug> printk ( KERN_ERR \"UWB:<S2SV_blank>Cannot<S2SV_blank>start<S2SV_blank>management<S2SV_blank>daemon;<S2SV_blank>\" \"UWB<S2SV_blank>won\\'t<S2SV_blank>work\\\\n\" ) ; <S2SV_StartBug> else <S2SV_EndBug> rc -> uwbd . pid = rc -> uwbd . task -> pid ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc ) { struct task_struct * <S2SV_ModEnd> task = kthread_run <S2SV_ModStart> ; if ( IS_ERR ( task ) ) { <S2SV_ModStart> uwbd . task = NULL ; <S2SV_ModEnd> printk ( KERN_ERR <S2SV_ModStart> \"UWB<S2SV_blank>won\\'t<S2SV_blank>work\\\\n\" ) ; } else { rc -> uwbd . task = task ; <S2SV_ModEnd> rc -> uwbd <S2SV_ModStart> pid ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-667(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11599\n\n```\nCWE-667 struct vm_area_struct * find_extend_vma ( struct mm_struct * mm , unsigned long addr ) { struct vm_area_struct * vma ; unsigned long start ; addr &= PAGE_MASK ; vma = find_vma ( mm , addr ) ; if ( ! vma ) return NULL ; if ( vma -> vm_start <= addr ) return vma ; if ( ! ( vma -> vm_flags & VM_GROWSDOWN ) ) return NULL ; <S2SV_StartBug> start = vma -> vm_start ; <S2SV_EndBug> if ( expand_stack ( vma , addr ) ) return NULL ; if ( vma -> vm_flags & VM_LOCKED ) populate_vma_page_range ( vma , addr , start , NULL ) ; return vma ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return NULL ; if ( ! mmget_still_valid ( mm ) ) return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 static int unix_attach_fds ( struct scm_cookie * scm , struct sk_buff * skb ) { int i ; unsigned char max_level = 0 ; int unix_sock_count = 0 ; if ( too_many_unix_fds ( current ) ) return - ETOOMANYREFS ; for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) { struct sock * sk = unix_get_socket ( scm -> fp -> fp [ i ] ) ; if ( sk ) { unix_sock_count ++ ; max_level = max ( max_level , unix_sk ( sk ) -> recursion_level ) ; } } if ( unlikely ( max_level > MAX_RECURSION_LEVEL ) ) return - ETOOMANYREFS ; UNIXCB ( skb ) . fp = scm_fp_dup ( scm -> fp ) ; if ( ! UNIXCB ( skb ) . fp ) return - ENOMEM ; for ( i = scm -> fp -> count - 1 ; i >= 0 ; i -- ) <S2SV_StartBug> unix_inflight ( scm -> fp -> fp [ i ] ) ; <S2SV_EndBug> return max_level ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> fp -> user , scm -> fp ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_arg ( PyObject * obj , arg_ty * out , PyArena * arena ) { PyObject * tmp = NULL ; identifier arg ; expr_ty annotation ; string type_comment ; int lineno ; int col_offset ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_arg ) ) { <S2SV_EndBug> int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_arg ) ; if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_identifier ( tmp , & arg , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"arg\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } if ( exists_not_none ( obj , & PyId_annotation ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_annotation ) ; if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_expr ( tmp , & annotation , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> annotation = NULL ; } if ( exists_not_none ( obj , & PyId_type_comment ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_type_comment ) ; if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_string ( tmp , & type_comment , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { type_comment = NULL ; } if ( _PyObject_HasAttrId ( obj , & PyId_lineno ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_lineno ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & lineno , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_col_offset ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_col_offset ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_int ( tmp , & col_offset , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } * out = arg ( arg , annotation , type_comment , lineno , col_offset , arena ) ; return 0 ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_arg , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"arg\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } else { int res ; res = obj2ast_identifier ( tmp , & arg , arena ) ; if ( res != 0 <S2SV_ModEnd> ) goto failed <S2SV_ModStart> goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_annotation , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; annotation = NULL ; } else { int res ; res = obj2ast_expr ( tmp , & annotation <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_type_comment , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; type_comment = NULL ; } else { int res ; res = obj2ast_string ( tmp , & type_comment , arena ) ; if ( res != 0 <S2SV_ModEnd> ) goto failed <S2SV_ModStart> goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_lineno , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"lineno\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } else { int res ; res = obj2ast_int ( tmp , & lineno <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_col_offset , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"col_offset\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>arg\" ) ; return 1 ; } else { int res ; res = obj2ast_int ( tmp , & col_offset , arena ) ; if ( res != 0 <S2SV_ModEnd> ) goto failed <S2SV_ModStart> goto failed ; Py_CLEAR ( tmp ) <S2SV_ModEnd> ; } *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0038\n\n```\nCWE-189 STATIC struct posix_acl * xfs_acl_from_disk ( struct xfs_acl * aclp ) { struct posix_acl_entry * acl_e ; struct posix_acl * acl ; struct xfs_acl_entry * ace ; <S2SV_StartBug> int count , i ; <S2SV_EndBug> count = be32_to_cpu ( aclp -> acl_cnt ) ; if ( count > XFS_ACL_MAX_ENTRIES ) return ERR_PTR ( - EFSCORRUPTED ) ; acl = posix_acl_alloc ( count , GFP_KERNEL ) ; if ( ! acl ) return ERR_PTR ( - ENOMEM ) ; for ( i = 0 ; i < count ; i ++ ) { acl_e = & acl -> a_entries [ i ] ; ace = & aclp -> acl_entry [ i ] ; acl_e -> e_tag = be32_to_cpu ( ace -> ae_tag ) ; acl_e -> e_perm = be16_to_cpu ( ace -> ae_perm ) ; switch ( acl_e -> e_tag ) { case ACL_USER : case ACL_GROUP : acl_e -> e_id = be32_to_cpu ( ace -> ae_id ) ; break ; case ACL_USER_OBJ : case ACL_GROUP_OBJ : case ACL_MASK : case ACL_OTHER : acl_e -> e_id = ACL_UNDEFINED_ID ; break ; default : goto fail ; } } return acl ; fail : posix_acl_release ( acl ) ; return ERR_PTR ( - EINVAL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ace ; unsigned\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4997\n\n```\nCWE-264 static int check_entry_size_and_hooks ( struct ip6t_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct ip6t_entry ) != 0 || ( unsigned char * ) e + sizeof ( struct ip6t_entry ) >= limit || ( unsigned char * ) e + e -> next_offset > limit ) { duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct ip6t_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } if ( ! ip6_checkentry ( & e -> ipv6 ) ) return - EINVAL ; <S2SV_StartBug> err = xt_check_entry_offsets ( e , e -> target_offset , e -> next_offset ) ; <S2SV_EndBug> if ( err ) return err ; for ( h = 0 ; h < NF_INET_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_debug ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , e -> elems , e ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5545\n\n```\nCWE-125 int main ( int argc , char * argv [ ] ) { FILE * iplist = NULL ; plist_t root_node = NULL ; char * plist_out = NULL ; uint32_t size = 0 ; int read_size = 0 ; char * plist_entire = NULL ; struct stat filestats ; options_t * options = parse_arguments ( argc , argv ) ; if ( ! options ) { print_usage ( argc , argv ) ; return 0 ; } iplist = fopen ( options -> in_file , \"rb\" ) ; if ( ! iplist ) { free ( options ) ; return 1 ; } <S2SV_StartBug> stat ( options -> in_file , & filestats ) ; <S2SV_EndBug> plist_entire = ( char * ) malloc ( sizeof ( char ) * ( filestats . st_size + 1 ) ) ; read_size = fread ( plist_entire , sizeof ( char ) , filestats . st_size , iplist ) ; fclose ( iplist ) ; if ( memcmp ( plist_entire , \"bplist00\" , 8 ) == 0 ) { plist_from_bin ( plist_entire , read_size , & root_node ) ; plist_to_xml ( root_node , & plist_out , & size ) ; } else { plist_from_xml ( plist_entire , read_size , & root_node ) ; plist_to_bin ( root_node , & plist_out , & size ) ; } plist_free ( root_node ) ; free ( plist_entire ) ; if ( plist_out ) { if ( options -> out_file != NULL ) { FILE * oplist = fopen ( options -> out_file , \"wb\" ) ; if ( ! oplist ) { free ( options ) ; return 1 ; } fwrite ( plist_out , size , sizeof ( char ) , oplist ) ; fclose ( oplist ) ; } else fwrite ( plist_out , size , sizeof ( char ) , stdout ) ; free ( plist_out ) ; } else printf ( \"ERROR:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>input<S2SV_blank>file.\\\\n\" ) ; free ( options ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filestats ) ; if ( filestats . st_size < 8 ) { printf ( \"ERROR:<S2SV_blank>Input<S2SV_blank>file<S2SV_blank>is<S2SV_blank>too<S2SV_blank>small<S2SV_blank>to<S2SV_blank>contain<S2SV_blank>valid<S2SV_blank>plist<S2SV_blank>data.\\\\n\" ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11171\n\n```\nCWE-835 void gsm_xsmp_client_connect ( GsmXSMPClient * client , SmsConn conn , unsigned long * mask_ret , SmsCallbacks * callbacks_ret ) { client -> priv -> conn = conn ; <S2SV_StartBug> if ( client -> priv -> protocol_timeout ) { <S2SV_EndBug> g_source_remove ( client -> priv -> protocol_timeout ) ; client -> priv -> protocol_timeout = 0 ; } g_debug ( \"GsmXSMPClient:<S2SV_blank>Initializing<S2SV_blank>client<S2SV_blank>%s\" , client -> priv -> description ) ; * mask_ret = 0 ; * mask_ret |= SmsRegisterClientProcMask ; callbacks_ret -> register_client . callback = register_client_callback ; callbacks_ret -> register_client . manager_data = client ; * mask_ret |= SmsInteractRequestProcMask ; callbacks_ret -> interact_request . callback = interact_request_callback ; callbacks_ret -> interact_request . manager_data = client ; * mask_ret |= SmsInteractDoneProcMask ; callbacks_ret -> interact_done . callback = interact_done_callback ; callbacks_ret -> interact_done . manager_data = client ; * mask_ret |= SmsSaveYourselfRequestProcMask ; callbacks_ret -> save_yourself_request . callback = save_yourself_request_callback ; callbacks_ret -> save_yourself_request . manager_data = client ; * mask_ret |= SmsSaveYourselfP2RequestProcMask ; callbacks_ret -> save_yourself_phase2_request . callback = save_yourself_phase2_request_callback ; callbacks_ret -> save_yourself_phase2_request . manager_data = client ; * mask_ret |= SmsSaveYourselfDoneProcMask ; callbacks_ret -> save_yourself_done . callback = save_yourself_done_callback ; callbacks_ret -> save_yourself_done . manager_data = client ; * mask_ret |= SmsCloseConnectionProcMask ; callbacks_ret -> close_connection . callback = close_connection_callback ; callbacks_ret -> close_connection . manager_data = client ; * mask_ret |= SmsSetPropertiesProcMask ; callbacks_ret -> set_properties . callback = set_properties_callback ; callbacks_ret -> set_properties . manager_data = client ; * mask_ret |= SmsDeletePropertiesProcMask ; callbacks_ret -> delete_properties . callback = delete_properties_callback ; callbacks_ret -> delete_properties . manager_data = client ; * mask_ret |= SmsGetPropertiesProcMask ; callbacks_ret -> get_properties . callback = get_properties_callback ; callbacks_ret -> get_properties . manager_data = client ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = conn ; <S2SV_ModEnd> g_debug ( \"GsmXSMPClient:<S2SV_blank>Initializing<S2SV_blank>client<S2SV_blank>%s\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15888\n\n```\nCWE-416 void luaT_getvarargs ( lua_State * L , CallInfo * ci , StkId where , int wanted ) { int i ; int nextra = ci -> u . l . nextraargs ; if ( wanted < 0 ) { wanted = nextra ; <S2SV_StartBug> checkstackp ( L , nextra , where ) ; <S2SV_EndBug> L -> top = where + nextra ; } for ( i = 0 ; i < wanted && i < nextra ; i ++ ) setobjs2s ( L , where + i , ci -> func - nextra + i ) ; for ( ; i < wanted ; i ++ ) setnilvalue ( s2v ( where + i ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = nextra ; checkstackGCp <S2SV_ModEnd> ( L ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int64_t rd_pick_intra_sub_8x8_y_mode ( VP9_COMP * cpi , MACROBLOCK * mb , int * rate , int * rate_y , int64_t * distortion , int64_t best_rd ) { int i , j ; const MACROBLOCKD * const xd = & mb -> e_mbd ; MODE_INFO * const mic = xd -> mi [ 0 ] ; <S2SV_StartBug> const MODE_INFO * above_mi = xd -> mi [ - xd -> mi_stride ] ; <S2SV_EndBug> <S2SV_StartBug> const MODE_INFO * left_mi = xd -> left_available ? xd -> mi [ - 1 ] : NULL ; <S2SV_EndBug> const BLOCK_SIZE bsize = xd -> mi [ 0 ] -> mbmi . sb_type ; const int num_4x4_blocks_wide = num_4x4_blocks_wide_lookup [ bsize ] ; const int num_4x4_blocks_high = num_4x4_blocks_high_lookup [ bsize ] ; int idx , idy ; int cost = 0 ; int64_t total_distortion = 0 ; int tot_rate_y = 0 ; int64_t total_rd = 0 ; ENTROPY_CONTEXT t_above [ 4 ] , t_left [ 4 ] ; <S2SV_StartBug> const int * bmode_costs = mb -> mbmode_cost ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( t_above , xd -> plane [ 0 ] . above_context , sizeof ( t_above ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( t_left , xd -> plane [ 0 ] . left_context , sizeof ( t_left ) ) ; <S2SV_EndBug> for ( idy = 0 ; idy < 2 ; idy += num_4x4_blocks_high ) { for ( idx = 0 ; idx < 2 ; idx += num_4x4_blocks_wide ) { <S2SV_StartBug> MB_PREDICTION_MODE best_mode = DC_PRED ; <S2SV_EndBug> int r = INT_MAX , ry = INT_MAX ; int64_t d = INT64_MAX , this_rd = INT64_MAX ; i = idy * 2 + idx ; if ( cpi -> common . frame_type == KEY_FRAME ) { <S2SV_StartBug> const MB_PREDICTION_MODE A = vp9_above_block_mode ( mic , above_mi , i ) ; <S2SV_EndBug> <S2SV_StartBug> const MB_PREDICTION_MODE L = vp9_left_block_mode ( mic , left_mi , i ) ; <S2SV_EndBug> <S2SV_StartBug> bmode_costs = mb -> y_mode_costs [ A ] [ L ] ; <S2SV_EndBug> } this_rd = rd_pick_intra4x4block ( cpi , mb , i , & best_mode , bmode_costs , t_above + idx , t_left + idy , & r , & ry , & d , bsize , best_rd - total_rd ) ; if ( this_rd >= best_rd - total_rd ) return INT64_MAX ; total_rd += this_rd ; cost += r ; total_distortion += d ; tot_rate_y += ry ; mic -> bmi [ i ] . as_mode = best_mode ; for ( j = 1 ; j < num_4x4_blocks_high ; ++ j ) mic -> bmi [ i + j * 2 ] . as_mode = best_mode ; for ( j = 1 ; j < num_4x4_blocks_wide ; ++ j ) mic -> bmi [ i + j ] . as_mode = best_mode ; if ( total_rd >= best_rd ) return INT64_MAX ; } } * rate = cost ; * rate_y = tot_rate_y ; * distortion = total_distortion ; mic -> mbmi . mode = mic -> bmi [ 3 ] . as_mode ; return RDCOST ( mb -> rdmult , mb -> rddiv , cost , total_distortion ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = xd -> above_mi <S2SV_ModEnd> ; const MODE_INFO <S2SV_ModStart> = xd -> left_mi <S2SV_ModEnd> ; const BLOCK_SIZE <S2SV_ModStart> * bmode_costs = cpi <S2SV_ModEnd> -> mbmode_cost ; <S2SV_ModStart> -> mbmode_cost ; memcpy <S2SV_ModEnd> ( t_above , <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( t_left , <S2SV_ModStart> num_4x4_blocks_wide ) { PREDICTION_MODE <S2SV_ModEnd> best_mode = DC_PRED <S2SV_ModStart> ) { const PREDICTION_MODE <S2SV_ModEnd> A = vp9_above_block_mode <S2SV_ModStart> ) ; const PREDICTION_MODE <S2SV_ModEnd> L = vp9_left_block_mode <S2SV_ModStart> ; bmode_costs = cpi -> y_mode_costs [ A ] [ L ] ; } this_rd = rd_pick_intra4x4block ( cpi , mb , idy , idx <S2SV_ModEnd> , & best_mode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2010-1152\n\n```\nCWE-20 static int try_read_command ( conn * c ) { assert ( c != NULL ) ; assert ( c -> rcurr <= ( c -> rbuf + c -> rsize ) ) ; assert ( c -> rbytes > 0 ) ; if ( c -> protocol == negotiating_prot || c -> transport == udp_transport ) { if ( ( unsigned char ) c -> rbuf [ 0 ] == ( unsigned char ) PROTOCOL_BINARY_REQ ) { c -> protocol = binary_prot ; } else { c -> protocol = ascii_prot ; } if ( settings . verbose > 1 ) { fprintf ( stderr , \"%d:<S2SV_blank>Client<S2SV_blank>using<S2SV_blank>the<S2SV_blank>%s<S2SV_blank>protocol\\\\n\" , c -> sfd , prot_text ( c -> protocol ) ) ; } } if ( c -> protocol == binary_prot ) { if ( c -> rbytes < sizeof ( c -> binary_header ) ) { return 0 ; } else { # ifdef NEED_ALIGN if ( ( ( long ) ( c -> rcurr ) ) % 8 != 0 ) { memmove ( c -> rbuf , c -> rcurr , c -> rbytes ) ; c -> rcurr = c -> rbuf ; if ( settings . verbose > 1 ) { fprintf ( stderr , \"%d:<S2SV_blank>Realign<S2SV_blank>input<S2SV_blank>buffer\\\\n\" , c -> sfd ) ; } } # endif protocol_binary_request_header * req ; req = ( protocol_binary_request_header * ) c -> rcurr ; if ( settings . verbose > 1 ) { int ii ; fprintf ( stderr , \"<%d<S2SV_blank>Read<S2SV_blank>binary<S2SV_blank>protocol<S2SV_blank>data:\" , c -> sfd ) ; for ( ii = 0 ; ii < sizeof ( req -> bytes ) ; ++ ii ) { if ( ii % 4 == 0 ) { fprintf ( stderr , \"\\\\n<%d<S2SV_blank><S2SV_blank><S2SV_blank>\" , c -> sfd ) ; } fprintf ( stderr , \"<S2SV_blank>0x%02x\" , req -> bytes [ ii ] ) ; } fprintf ( stderr , \"\\\\n\" ) ; } c -> binary_header = * req ; c -> binary_header . request . keylen = ntohs ( req -> request . keylen ) ; c -> binary_header . request . bodylen = ntohl ( req -> request . bodylen ) ; c -> binary_header . request . cas = ntohll ( req -> request . cas ) ; if ( c -> binary_header . request . magic != PROTOCOL_BINARY_REQ ) { if ( settings . verbose ) { fprintf ( stderr , \"Invalid<S2SV_blank>magic:<S2SV_blank><S2SV_blank>%x\\\\n\" , c -> binary_header . request . magic ) ; } conn_set_state ( c , conn_closing ) ; return - 1 ; } c -> msgcurr = 0 ; c -> msgused = 0 ; c -> iovused = 0 ; if ( add_msghdr ( c ) != 0 ) { out_string ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\" ) ; return 0 ; } c -> cmd = c -> binary_header . request . opcode ; c -> keylen = c -> binary_header . request . keylen ; c -> opaque = c -> binary_header . request . opaque ; c -> cas = 0 ; dispatch_bin_command ( c ) ; c -> rbytes -= sizeof ( c -> binary_header ) ; c -> rcurr += sizeof ( c -> binary_header ) ; } } else { char * el , * cont ; if ( c -> rbytes == 0 ) return 0 ; el = memchr ( c -> rcurr , '\\\\n' , c -> rbytes ) ; if ( ! el ) { if ( c -> rbytes > 1024 ) { char * ptr = c -> rcurr ; while ( * ptr == '<S2SV_blank>' ) { ++ ptr ; } <S2SV_StartBug> if ( strcmp ( ptr , \"get<S2SV_blank>\" ) && strcmp ( ptr , \"gets<S2SV_blank>\" ) ) { <S2SV_EndBug> conn_set_state ( c , conn_closing ) ; return 1 ; } } return 0 ; } cont = el + 1 ; if ( ( el - c -> rcurr ) > 1 && * ( el - 1 ) == '\\\\r' ) { el -- ; } * el = '\\\\0' ; assert ( cont <= ( c -> rcurr + c -> rbytes ) ) ; process_command ( c , c -> rcurr ) ; c -> rbytes -= ( cont - c -> rcurr ) ; c -> rcurr = cont ; assert ( c -> rcurr <= ( c -> rbuf + c -> rsize ) ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ptr - c -> rcurr > 100 || ( strncmp ( ptr , \"get<S2SV_blank>\" , 4 ) && strncmp <S2SV_ModEnd> ( ptr , <S2SV_ModStart> ptr , \"gets<S2SV_blank>\" , 5 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14223\n\n```\nCWE-400 static int asf_build_simple_index ( AVFormatContext * s , int stream_index ) { ff_asf_guid g ; ASFContext * asf = s -> priv_data ; int64_t current_pos = avio_tell ( s -> pb ) ; int64_t ret ; if ( ( ret = avio_seek ( s -> pb , asf -> data_object_offset + asf -> data_object_size , SEEK_SET ) ) < 0 ) { return ret ; } if ( ( ret = ff_get_guid ( s -> pb , & g ) ) < 0 ) goto end ; while ( ff_guidcmp ( & g , & ff_asf_simple_index_header ) ) { int64_t gsize = avio_rl64 ( s -> pb ) ; if ( gsize < 24 || avio_feof ( s -> pb ) ) { goto end ; } avio_skip ( s -> pb , gsize - 24 ) ; if ( ( ret = ff_get_guid ( s -> pb , & g ) ) < 0 ) goto end ; } { int64_t itime , last_pos = - 1 ; int pct , ict ; int i ; int64_t av_unused gsize = avio_rl64 ( s -> pb ) ; if ( ( ret = ff_get_guid ( s -> pb , & g ) ) < 0 ) goto end ; itime = avio_rl64 ( s -> pb ) ; pct = avio_rl32 ( s -> pb ) ; ict = avio_rl32 ( s -> pb ) ; av_log ( s , AV_LOG_DEBUG , \"itime:0x%\" PRIx64 \",<S2SV_blank>pct:%d,<S2SV_blank>ict:%d\\\\n\" , itime , pct , ict ) ; for ( i = 0 ; i < ict ; i ++ ) { int pktnum = avio_rl32 ( s -> pb ) ; int pktct = avio_rl16 ( s -> pb ) ; int64_t pos = s -> internal -> data_offset + s -> packet_size * ( int64_t ) pktnum ; <S2SV_StartBug> int64_t index_pts = FFMAX ( av_rescale ( itime , i , 10000 ) - asf -> hdr . preroll , 0 ) ; <S2SV_EndBug> if ( pos != last_pos ) { av_log ( s , AV_LOG_DEBUG , \"pktnum:%d,<S2SV_blank>pktct:%d<S2SV_blank><S2SV_blank>pts:<S2SV_blank>%\" PRId64 \"\\\\n\" , pktnum , pktct , index_pts ) ; av_add_index_entry ( s -> streams [ stream_index ] , pos , index_pts , s -> packet_size , 0 , AVINDEX_KEYFRAME ) ; last_pos = pos ; } } asf -> index_read = ict > 1 ; } end : avio_seek ( s -> pb , current_pos , SEEK_SET ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; if ( avio_feof ( s -> pb ) ) { ret = AVERROR_INVALIDDATA ; goto end ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4162\n\n```\nCWE-399 <S2SV_StartBug> static int udp_push_pending_frames ( struct sock * sk ) <S2SV_EndBug> { struct udp_sock * up = udp_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct flowi4 * fl4 = & inet -> cork . fl . u . ip4 ; struct sk_buff * skb ; int err = 0 ; skb = ip_finish_skb ( sk , fl4 ) ; if ( ! skb ) goto out ; err = udp_send_skb ( skb , fl4 ) ; out : up -> len = 0 ; up -> pending = 0 ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> int udp_push_pending_frames (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4700\n\n```\nCWE-17 void bpf_int_jit_compile ( struct bpf_prog * prog ) { struct bpf_binary_header * header = NULL ; int proglen , oldproglen = 0 ; struct jit_context ctx = { } ; u8 * image = NULL ; int * addrs ; int pass ; int i ; if ( ! bpf_jit_enable ) return ; if ( ! prog || ! prog -> len ) return ; addrs = kmalloc ( prog -> len * sizeof ( * addrs ) , GFP_KERNEL ) ; if ( ! addrs ) return ; for ( proglen = 0 , i = 0 ; i < prog -> len ; i ++ ) { proglen += 64 ; addrs [ i ] = proglen ; } ctx . cleanup_addr = proglen ; <S2SV_StartBug> for ( pass = 0 ; pass < 10 ; pass ++ ) { <S2SV_EndBug> proglen = do_jit ( prog , addrs , image , oldproglen , & ctx ) ; if ( proglen <= 0 ) { image = NULL ; if ( header ) bpf_jit_binary_free ( header ) ; goto out ; } if ( image ) { if ( proglen != oldproglen ) { pr_err ( \"bpf_jit:<S2SV_blank>proglen=%d<S2SV_blank>!=<S2SV_blank>oldproglen=%d\\\\n\" , proglen , oldproglen ) ; goto out ; } break ; } if ( proglen == oldproglen ) { header = bpf_jit_binary_alloc ( proglen , & image , 1 , jit_fill_hole ) ; if ( ! header ) goto out ; } oldproglen = proglen ; } if ( bpf_jit_enable > 1 ) bpf_jit_dump ( prog -> len , proglen , 0 , image ) ; if ( image ) { bpf_flush_icache ( header , image + proglen ) ; set_memory_ro ( ( unsigned long ) header , header -> pages ) ; prog -> bpf_func = ( void * ) image ; prog -> jited = true ; } out : kfree ( addrs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pass < 10 || image\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6198\n\n```\nCWE-284 int vfs_rename ( struct inode * old_dir , struct dentry * old_dentry , struct inode * new_dir , struct dentry * new_dentry , struct inode * * delegated_inode , unsigned int flags ) { int error ; bool is_dir = d_is_dir ( old_dentry ) ; const unsigned char * old_name ; struct inode * source = old_dentry -> d_inode ; struct inode * target = new_dentry -> d_inode ; bool new_is_dir = false ; unsigned max_links = new_dir -> i_sb -> s_max_links ; <S2SV_StartBug> if ( source == target ) <S2SV_EndBug> return 0 ; error = may_delete ( old_dir , old_dentry , is_dir ) ; if ( error ) return error ; if ( ! target ) { error = may_create ( new_dir , new_dentry ) ; } else { new_is_dir = d_is_dir ( new_dentry ) ; if ( ! ( flags & RENAME_EXCHANGE ) ) error = may_delete ( new_dir , new_dentry , is_dir ) ; else error = may_delete ( new_dir , new_dentry , new_is_dir ) ; } if ( error ) return error ; if ( ! old_dir -> i_op -> rename && ! old_dir -> i_op -> rename2 ) return - EPERM ; if ( flags && ! old_dir -> i_op -> rename2 ) return - EINVAL ; if ( new_dir != old_dir ) { if ( is_dir ) { error = inode_permission ( source , MAY_WRITE ) ; if ( error ) return error ; } if ( ( flags & RENAME_EXCHANGE ) && new_is_dir ) { error = inode_permission ( target , MAY_WRITE ) ; if ( error ) return error ; } } error = security_inode_rename ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; if ( error ) return error ; old_name = fsnotify_oldname_init ( old_dentry -> d_name . name ) ; dget ( new_dentry ) ; if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) lock_two_nondirectories ( source , target ) ; else if ( target ) inode_lock ( target ) ; error = - EBUSY ; if ( is_local_mountpoint ( old_dentry ) || is_local_mountpoint ( new_dentry ) ) goto out ; if ( max_links && new_dir != old_dir ) { error = - EMLINK ; if ( is_dir && ! new_is_dir && new_dir -> i_nlink >= max_links ) goto out ; if ( ( flags & RENAME_EXCHANGE ) && ! is_dir && new_is_dir && old_dir -> i_nlink >= max_links ) goto out ; } if ( is_dir && ! ( flags & RENAME_EXCHANGE ) && target ) shrink_dcache_parent ( new_dentry ) ; if ( ! is_dir ) { error = try_break_deleg ( source , delegated_inode ) ; if ( error ) goto out ; } if ( target && ! new_is_dir ) { error = try_break_deleg ( target , delegated_inode ) ; if ( error ) goto out ; } if ( ! old_dir -> i_op -> rename2 ) { error = old_dir -> i_op -> rename ( old_dir , old_dentry , new_dir , new_dentry ) ; } else { WARN_ON ( old_dir -> i_op -> rename != NULL ) ; error = old_dir -> i_op -> rename2 ( old_dir , old_dentry , new_dir , new_dentry , flags ) ; } if ( error ) goto out ; if ( ! ( flags & RENAME_EXCHANGE ) && target ) { if ( is_dir ) target -> i_flags |= S_DEAD ; dont_mount ( new_dentry ) ; detach_mounts ( new_dentry ) ; } if ( ! ( old_dir -> i_sb -> s_type -> fs_flags & FS_RENAME_DOES_D_MOVE ) ) { if ( ! ( flags & RENAME_EXCHANGE ) ) d_move ( old_dentry , new_dentry ) ; else d_exchange ( old_dentry , new_dentry ) ; } out : if ( ! is_dir || ( flags & RENAME_EXCHANGE ) ) unlock_two_nondirectories ( source , target ) ; else if ( target ) inode_unlock ( target ) ; dput ( new_dentry ) ; if ( ! error ) { fsnotify_move ( old_dir , new_dir , old_name , is_dir , ! ( flags & RENAME_EXCHANGE ) ? target : NULL , old_dentry ) ; if ( flags & RENAME_EXCHANGE ) { fsnotify_move ( new_dir , old_dir , old_dentry -> d_name . name , new_is_dir , NULL , new_dentry ) ; } } fsnotify_oldname_free ( old_name ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( vfs_select_inode ( old_dentry , 0 ) == vfs_select_inode ( new_dentry , 0 ) <S2SV_ModEnd> ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9527\n\n```\nCWE-416 static void mark_context_stack ( mrb_state * mrb , struct mrb_context * c ) { size_t i ; <S2SV_StartBug> size_t e ; <S2SV_EndBug> if ( c -> stack == NULL ) return ; e = c -> stack - c -> stbase ; if ( c -> ci ) e += c -> ci -> nregs ; if ( c -> stbase + e > c -> stend ) e = c -> stend - c -> stbase ; for ( i = 0 ; i < e ; i ++ ) { mrb_value v = c -> stbase [ i ] ; if ( ! mrb_immediate_p ( v ) ) { <S2SV_StartBug> if ( mrb_basic_ptr ( v ) -> tt == MRB_TT_FREE ) { <S2SV_EndBug> c -> stbase [ i ] = mrb_nil_value ( ) ; } else { mrb_gc_mark ( mrb , mrb_basic_ptr ( v ) ) ; } } <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; size_t e ; mrb_value nil <S2SV_ModStart> ) ) { <S2SV_ModEnd> mrb_gc_mark ( mrb <S2SV_ModStart> ; } } e = c -> stend - c -> stbase ; nil = mrb_nil_value ( ) ; for ( ; i < e ; i ++ ) { c -> stbase [ i ] = nil ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 void __skb_tstamp_tx ( struct sk_buff * orig_skb , struct skb_shared_hwtstamps * hwtstamps , struct sock * sk , int tstype ) { struct sk_buff * skb ; <S2SV_StartBug> bool tsonly ; <S2SV_EndBug> if ( ! sk ) return ; tsonly = sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_TSONLY ; if ( ! skb_may_tx_timestamp ( sk , tsonly ) ) return ; if ( tsonly ) { # ifdef CONFIG_INET if ( ( sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_STATS ) && sk -> sk_protocol == IPPROTO_TCP && <S2SV_StartBug> sk -> sk_type == SOCK_STREAM ) <S2SV_EndBug> skb = tcp_get_timestamping_opt_stats ( sk ) ; <S2SV_StartBug> else <S2SV_EndBug> # endif skb = alloc_skb ( 0 , GFP_ATOMIC ) ; } else { skb = skb_clone ( orig_skb , GFP_ATOMIC ) ; } if ( ! skb ) return ; if ( tsonly ) { skb_shinfo ( skb ) -> tx_flags = skb_shinfo ( orig_skb ) -> tx_flags ; skb_shinfo ( skb ) -> tskey = skb_shinfo ( orig_skb ) -> tskey ; } if ( hwtstamps ) * skb_hwtstamps ( skb ) = * hwtstamps ; else skb -> tstamp = ktime_get_real ( ) ; <S2SV_StartBug> __skb_complete_tx_timestamp ( skb , sk , tstype ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bool tsonly , opt_stats = false <S2SV_ModStart> == SOCK_STREAM ) { <S2SV_ModStart> sk ) ; opt_stats = true ; } <S2SV_ModStart> sk , tstype , opt_stats\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int PredictorEncodeTile ( TIFF * tif , uint8 * bp0 , tmsize_t cc0 , uint16 s ) { static const char module [ ] = \"PredictorEncodeTile\" ; TIFFPredictorState * sp = PredictorState ( tif ) ; uint8 * working_copy ; tmsize_t cc = cc0 , rowsize ; unsigned char * bp ; int result_code ; assert ( sp != NULL ) ; assert ( sp -> encodepfunc != NULL ) ; assert ( sp -> encodetile != NULL ) ; working_copy = ( uint8 * ) _TIFFmalloc ( cc0 ) ; if ( working_copy == NULL ) { TIFFErrorExt ( tif -> tif_clientdata , module , \"Out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>allocating<S2SV_blank>\" TIFF_SSIZE_FORMAT \"<S2SV_blank>byte<S2SV_blank>temp<S2SV_blank>buffer.\" , cc0 ) ; return 0 ; } memcpy ( working_copy , bp0 , cc0 ) ; bp = working_copy ; rowsize = sp -> rowsize ; assert ( rowsize > 0 ) ; if ( ( cc0 % rowsize ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"PredictorEncodeTile\" , \"%s\" , \"(cc0%rowsize)!=0\" ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> } while ( cc > 0 ) { ( * sp -> encodepfunc ) ( tif , bp , rowsize ) ; cc -= rowsize ; bp += rowsize ; } result_code = ( * sp -> encodetile ) ( tif , working_copy , cc0 , s ) ; _TIFFfree ( working_copy ) ; return result_code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"(cc0%rowsize)!=0\" ) ; _TIFFfree ( working_copy ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-5344\n\n```\nCWE-416 static void lo_release ( struct gendisk * disk , fmode_t mode ) { <S2SV_StartBug> struct loop_device * lo = disk -> private_data ; <S2SV_EndBug> int err ; if ( atomic_dec_return ( & lo -> lo_refcnt ) ) return ; mutex_lock ( & lo -> lo_ctl_mutex ) ; if ( lo -> lo_flags & LO_FLAGS_AUTOCLEAR ) { err = loop_clr_fd ( lo ) ; if ( ! err ) return ; } else if ( lo -> lo_state == Lo_bound ) { blk_mq_freeze_queue ( lo -> lo_queue ) ; blk_mq_unfreeze_queue ( lo -> lo_queue ) ; } <S2SV_StartBug> mutex_unlock ( & lo -> lo_ctl_mutex ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mode ) { mutex_lock ( & loop_index_mutex ) ; __lo_release ( <S2SV_ModEnd> disk -> private_data <S2SV_ModStart> disk -> private_data ) ; <S2SV_ModEnd> mutex_unlock ( & <S2SV_ModStart> mutex_unlock ( & loop_index_mutex <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5892\n\n```\nCWE-436 bgp_attr_parse_ret_t bgp_attr_parse ( struct peer * peer , struct attr * attr , bgp_size_t size , struct bgp_nlri * mp_update , struct bgp_nlri * mp_withdraw ) { bgp_attr_parse_ret_t ret ; uint8_t flag = 0 ; uint8_t type = 0 ; bgp_size_t length ; uint8_t * startp , * endp ; uint8_t * attr_endp ; uint8_t seen [ BGP_ATTR_BITMAP_SIZE ] ; struct aspath * as4_path = NULL ; as_t as4_aggregator = 0 ; struct in_addr as4_aggregator_addr = { . s_addr = 0 } ; memset ( seen , 0 , BGP_ATTR_BITMAP_SIZE ) ; endp = BGP_INPUT_PNT ( peer ) + size ; while ( BGP_INPUT_PNT ( peer ) < endp ) { if ( endp - BGP_INPUT_PNT ( peer ) < BGP_ATTR_MIN_LEN ) { flog_warn ( EC_BGP_ATTRIBUTE_TOO_SMALL , \"%s:<S2SV_blank>error<S2SV_blank>BGP<S2SV_blank>attribute<S2SV_blank>length<S2SV_blank>%lu<S2SV_blank>is<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>min<S2SV_blank>len\" , peer -> host , ( unsigned long ) ( endp - stream_pnt ( BGP_INPUT ( peer ) ) ) ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR ) ; return BGP_ATTR_PARSE_ERROR ; } startp = BGP_INPUT_PNT ( peer ) ; flag = 0xF0 & stream_getc ( BGP_INPUT ( peer ) ) ; type = stream_getc ( BGP_INPUT ( peer ) ) ; if ( CHECK_FLAG ( flag , BGP_ATTR_FLAG_EXTLEN ) && ( ( endp - startp ) < ( BGP_ATTR_MIN_LEN + 1 ) ) ) { flog_warn ( EC_BGP_EXT_ATTRIBUTE_TOO_SMALL , \"%s:<S2SV_blank>Extended<S2SV_blank>length<S2SV_blank>set,<S2SV_blank>but<S2SV_blank>just<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>attr<S2SV_blank>header\" , peer -> host , ( unsigned long ) ( endp - stream_pnt ( BGP_INPUT ( peer ) ) ) ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR ) ; return BGP_ATTR_PARSE_ERROR ; } if ( CHECK_FLAG ( flag , BGP_ATTR_FLAG_EXTLEN ) ) length = stream_getw ( BGP_INPUT ( peer ) ) ; else length = stream_getc ( BGP_INPUT ( peer ) ) ; if ( CHECK_BITMAP ( seen , type ) ) { flog_warn ( EC_BGP_ATTRIBUTE_REPEATED , \"%s:<S2SV_blank>error<S2SV_blank>BGP<S2SV_blank>attribute<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>appears<S2SV_blank>twice<S2SV_blank>in<S2SV_blank>a<S2SV_blank>message\" , peer -> host , type ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_MAL_ATTR ) ; return BGP_ATTR_PARSE_ERROR ; } SET_BITMAP ( seen , type ) ; attr_endp = BGP_INPUT_PNT ( peer ) + length ; if ( attr_endp > endp ) { flog_warn ( EC_BGP_ATTRIBUTE_TOO_LARGE , \"%s:<S2SV_blank>BGP<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>length<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large,<S2SV_blank>attribute<S2SV_blank>total<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d.<S2SV_blank><S2SV_blank>attr_endp<S2SV_blank>is<S2SV_blank>%p.<S2SV_blank><S2SV_blank>endp<S2SV_blank>is<S2SV_blank>%p\" , peer -> host , type , length , size , attr_endp , endp ) ; unsigned char ndata [ BGP_MAX_PACKET_SIZE ] ; memset ( ndata , 0x00 , sizeof ( ndata ) ) ; size_t lfl = CHECK_FLAG ( flag , BGP_ATTR_FLAG_EXTLEN ) ? 2 : 1 ; stream_forward_getp ( BGP_INPUT ( peer ) , - ( 1 + lfl ) ) ; stream_get ( & ndata [ 0 ] , BGP_INPUT ( peer ) , 1 ) ; stream_get ( & ndata [ 1 ] , BGP_INPUT ( peer ) , lfl ) ; size_t atl = attr_endp - startp ; size_t ndl = MIN ( atl , STREAM_READABLE ( BGP_INPUT ( peer ) ) ) ; stream_get ( & ndata [ lfl + 1 ] , BGP_INPUT ( peer ) , ndl ) ; bgp_notify_send_with_data ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR , ndata , ndl + lfl + 1 ) ; return BGP_ATTR_PARSE_ERROR ; } struct bgp_attr_parser_args attr_args = { . peer = peer , . length = length , . attr = attr , . type = type , . flags = flag , . startp = startp , . total = attr_endp - startp , } ; if ( bgp_attr_flag_invalid ( & attr_args ) ) { ret = bgp_attr_malformed ( & attr_args , BGP_NOTIFY_UPDATE_ATTR_FLAG_ERR , attr_args . total ) ; if ( ret == BGP_ATTR_PARSE_PROCEED ) continue ; return ret ; } switch ( type ) { case BGP_ATTR_ORIGIN : ret = bgp_attr_origin ( & attr_args ) ; break ; case BGP_ATTR_AS_PATH : ret = bgp_attr_aspath ( & attr_args ) ; break ; case BGP_ATTR_AS4_PATH : ret = bgp_attr_as4_path ( & attr_args , & as4_path ) ; break ; case BGP_ATTR_NEXT_HOP : ret = bgp_attr_nexthop ( & attr_args ) ; break ; case BGP_ATTR_MULTI_EXIT_DISC : ret = bgp_attr_med ( & attr_args ) ; break ; case BGP_ATTR_LOCAL_PREF : ret = bgp_attr_local_pref ( & attr_args ) ; break ; case BGP_ATTR_ATOMIC_AGGREGATE : ret = bgp_attr_atomic ( & attr_args ) ; break ; case BGP_ATTR_AGGREGATOR : ret = bgp_attr_aggregator ( & attr_args ) ; break ; case BGP_ATTR_AS4_AGGREGATOR : ret = bgp_attr_as4_aggregator ( & attr_args , & as4_aggregator , & as4_aggregator_addr ) ; break ; case BGP_ATTR_COMMUNITIES : ret = bgp_attr_community ( & attr_args ) ; break ; case BGP_ATTR_LARGE_COMMUNITIES : ret = bgp_attr_large_community ( & attr_args ) ; break ; case BGP_ATTR_ORIGINATOR_ID : ret = bgp_attr_originator_id ( & attr_args ) ; break ; case BGP_ATTR_CLUSTER_LIST : ret = bgp_attr_cluster_list ( & attr_args ) ; break ; case BGP_ATTR_MP_REACH_NLRI : ret = bgp_mp_reach_parse ( & attr_args , mp_update ) ; break ; case BGP_ATTR_MP_UNREACH_NLRI : ret = bgp_mp_unreach_parse ( & attr_args , mp_withdraw ) ; break ; case BGP_ATTR_EXT_COMMUNITIES : ret = bgp_attr_ext_communities ( & attr_args ) ; break ; <S2SV_StartBug> # if ENABLE_BGP_VNC <S2SV_EndBug> case BGP_ATTR_VNC : # endif case BGP_ATTR_ENCAP : ret = bgp_attr_encap ( type , peer , length , attr , flag , startp ) ; break ; case BGP_ATTR_PREFIX_SID : ret = bgp_attr_prefix_sid ( length , & attr_args , mp_update ) ; break ; case BGP_ATTR_PMSI_TUNNEL : ret = bgp_attr_pmsi_tunnel ( & attr_args ) ; break ; default : ret = bgp_attr_unknown ( & attr_args ) ; break ; } if ( ret == BGP_ATTR_PARSE_ERROR_NOTIFYPLS ) { bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_MAL_ATTR ) ; ret = BGP_ATTR_PARSE_ERROR ; } if ( ret == BGP_ATTR_PARSE_EOR ) { if ( as4_path ) aspath_unintern ( & as4_path ) ; return ret ; } if ( ret == BGP_ATTR_PARSE_ERROR ) { flog_warn ( EC_BGP_ATTRIBUTE_PARSE_ERROR , \"%s:<S2SV_blank>Attribute<S2SV_blank>%s,<S2SV_blank>parse<S2SV_blank>error\" , peer -> host , lookup_msg ( attr_str , type , NULL ) ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return ret ; } if ( ret == BGP_ATTR_PARSE_WITHDRAW ) { flog_warn ( EC_BGP_ATTRIBUTE_PARSE_WITHDRAW , \"%s:<S2SV_blank>Attribute<S2SV_blank>%s,<S2SV_blank>parse<S2SV_blank>error<S2SV_blank>-<S2SV_blank>treating<S2SV_blank>as<S2SV_blank>withdrawal\" , peer -> host , lookup_msg ( attr_str , type , NULL ) ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return ret ; } if ( BGP_INPUT_PNT ( peer ) != attr_endp ) { flog_warn ( EC_BGP_ATTRIBUTE_FETCH_ERROR , \"%s:<S2SV_blank>BGP<S2SV_blank>attribute<S2SV_blank>%s,<S2SV_blank>fetch<S2SV_blank>error\" , peer -> host , lookup_msg ( attr_str , type , NULL ) ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return BGP_ATTR_PARSE_ERROR ; } } if ( BGP_INPUT_PNT ( peer ) != endp ) { flog_warn ( EC_BGP_ATTRIBUTES_MISMATCH , \"%s:<S2SV_blank>BGP<S2SV_blank>attribute<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>mismatch\" , peer -> host , lookup_msg ( attr_str , type , NULL ) ) ; bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_ATTR_LENG_ERR ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return BGP_ATTR_PARSE_ERROR ; } if ( ( ret = bgp_attr_check ( peer , attr ) ) < 0 ) { if ( as4_path ) aspath_unintern ( & as4_path ) ; return ret ; } if ( CHECK_FLAG ( attr -> flag , ATTR_FLAG_BIT ( BGP_ATTR_AS_PATH ) ) && bgp_attr_munge_as4_attrs ( peer , attr , as4_path , as4_aggregator , & as4_aggregator_addr ) ) { bgp_notify_send ( peer , BGP_NOTIFY_UPDATE_ERR , BGP_NOTIFY_UPDATE_MAL_ATTR ) ; if ( as4_path ) aspath_unintern ( & as4_path ) ; return BGP_ATTR_PARSE_ERROR ; } if ( as4_path ) { aspath_unintern ( & as4_path ) ; } if ( attr -> flag & ( ATTR_FLAG_BIT ( BGP_ATTR_AS_PATH ) ) ) { ret = bgp_attr_aspath_check ( peer , attr ) ; if ( ret != BGP_ATTR_PARSE_PROCEED ) return ret ; } if ( attr -> transit ) attr -> transit = transit_intern ( attr -> transit ) ; if ( attr -> encap_subtlvs ) attr -> encap_subtlvs = encap_intern ( attr -> encap_subtlvs , ENCAP_SUBTLV_TYPE ) ; # if ENABLE_BGP_VNC if ( attr -> vnc_subtlvs ) attr -> vnc_subtlvs = encap_intern ( attr -> vnc_subtlvs , VNC_SUBTLV_TYPE ) ; # endif return BGP_ATTR_PARSE_PROCEED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # if ENABLE_BGP_VNC_ATTR <S2SV_ModEnd> case BGP_ATTR_VNC :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static int encrypted_update ( struct key * key , struct key_preparsed_payload * prep ) { struct encrypted_key_payload * epayload = key -> payload . data [ 0 ] ; struct encrypted_key_payload * new_epayload ; char * buf ; char * new_master_desc = NULL ; const char * format = NULL ; size_t datalen = prep -> datalen ; int ret = 0 ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) <S2SV_EndBug> return - ENOKEY ; if ( datalen <= 0 || datalen > 32767 || ! prep -> data ) return - EINVAL ; buf = kmalloc ( datalen + 1 , GFP_KERNEL ) ; if ( ! buf ) return - ENOMEM ; buf [ datalen ] = 0 ; memcpy ( buf , prep -> data , datalen ) ; ret = datablob_parse ( buf , & format , & new_master_desc , NULL , NULL ) ; if ( ret < 0 ) goto out ; ret = valid_master_desc ( new_master_desc , epayload -> master_desc ) ; if ( ret < 0 ) goto out ; new_epayload = encrypted_key_alloc ( key , epayload -> format , new_master_desc , epayload -> datalen ) ; if ( IS_ERR ( new_epayload ) ) { ret = PTR_ERR ( new_epayload ) ; goto out ; } __ekey_init ( new_epayload , epayload -> format , new_master_desc , epayload -> datalen ) ; memcpy ( new_epayload -> iv , epayload -> iv , ivsize ) ; memcpy ( new_epayload -> payload_data , epayload -> payload_data , epayload -> payload_datalen ) ; rcu_assign_keypointer ( key , new_epayload ) ; call_rcu ( & epayload -> rcu , encrypted_rcu_free ) ; out : kzfree ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_negative ( key <S2SV_ModEnd> ) ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * inpic ) { KerndeintContext * kerndeint = inlink -> dst -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; AVFrame * outpic ; const uint8_t * prvp ; const uint8_t * prvpp ; const uint8_t * prvpn ; const uint8_t * prvppp ; const uint8_t * prvpnn ; const uint8_t * prvp4p ; const uint8_t * prvp4n ; const uint8_t * srcp ; const uint8_t * srcpp ; const uint8_t * srcpn ; const uint8_t * srcppp ; const uint8_t * srcpnn ; const uint8_t * srcp3p ; const uint8_t * srcp3n ; const uint8_t * srcp4p ; const uint8_t * srcp4n ; uint8_t * dstp , * dstp_saved ; const uint8_t * srcp_saved ; int src_linesize , psrc_linesize , dst_linesize , bwidth ; int x , y , plane , val , hi , lo , g , h , n = kerndeint -> frame ++ ; double valf ; const int thresh = kerndeint -> thresh ; const int order = kerndeint -> order ; const int map = kerndeint -> map ; const int sharp = kerndeint -> sharp ; const int twoway = kerndeint -> twoway ; const int is_packed_rgb = kerndeint -> is_packed_rgb ; outpic = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! outpic ) { av_frame_free ( & inpic ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( outpic , inpic ) ; outpic -> interlaced_frame = 0 ; <S2SV_StartBug> for ( plane = 0 ; inpic -> data [ plane ] && plane < 4 ; plane ++ ) { <S2SV_EndBug> h = plane == 0 ? inlink -> h : FF_CEIL_RSHIFT ( inlink -> h , kerndeint -> vsub ) ; bwidth = kerndeint -> tmp_bwidth [ plane ] ; srcp = srcp_saved = inpic -> data [ plane ] ; src_linesize = inpic -> linesize [ plane ] ; psrc_linesize = kerndeint -> tmp_linesize [ plane ] ; dstp = dstp_saved = outpic -> data [ plane ] ; dst_linesize = outpic -> linesize [ plane ] ; srcp = srcp_saved + ( 1 - order ) * src_linesize ; dstp = dstp_saved + ( 1 - order ) * dst_linesize ; for ( y = 0 ; y < h ; y += 2 ) { memcpy ( dstp , srcp , bwidth ) ; srcp += 2 * src_linesize ; dstp += 2 * dst_linesize ; } memcpy ( dstp_saved + order * dst_linesize , srcp_saved + ( 1 - order ) * src_linesize , bwidth ) ; memcpy ( dstp_saved + ( 2 + order ) * dst_linesize , srcp_saved + ( 3 - order ) * src_linesize , bwidth ) ; memcpy ( dstp_saved + ( h - 2 + order ) * dst_linesize , srcp_saved + ( h - 1 - order ) * src_linesize , bwidth ) ; memcpy ( dstp_saved + ( h - 4 + order ) * dst_linesize , srcp_saved + ( h - 3 - order ) * src_linesize , bwidth ) ; prvp = kerndeint -> tmp_data [ plane ] + 5 * psrc_linesize - ( 1 - order ) * psrc_linesize ; prvpp = prvp - psrc_linesize ; prvppp = prvp - 2 * psrc_linesize ; prvp4p = prvp - 4 * psrc_linesize ; prvpn = prvp + psrc_linesize ; prvpnn = prvp + 2 * psrc_linesize ; prvp4n = prvp + 4 * psrc_linesize ; srcp = srcp_saved + 5 * src_linesize - ( 1 - order ) * src_linesize ; srcpp = srcp - src_linesize ; srcppp = srcp - 2 * src_linesize ; srcp3p = srcp - 3 * src_linesize ; srcp4p = srcp - 4 * src_linesize ; srcpn = srcp + src_linesize ; srcpnn = srcp + 2 * src_linesize ; srcp3n = srcp + 3 * src_linesize ; srcp4n = srcp + 4 * src_linesize ; dstp = dstp_saved + 5 * dst_linesize - ( 1 - order ) * dst_linesize ; for ( y = 5 - ( 1 - order ) ; y <= h - 5 - ( 1 - order ) ; y += 2 ) { for ( x = 0 ; x < bwidth ; x ++ ) { if ( thresh == 0 || n == 0 || ( abs ( ( int ) prvp [ x ] - ( int ) srcp [ x ] ) > thresh ) || ( abs ( ( int ) prvpp [ x ] - ( int ) srcpp [ x ] ) > thresh ) || ( abs ( ( int ) prvpn [ x ] - ( int ) srcpn [ x ] ) > thresh ) ) { if ( map ) { g = x & ~ 3 ; if ( is_packed_rgb ) { AV_WB32 ( dstp + g , 0xffffffff ) ; x = g + 3 ; } else if ( inlink -> format == AV_PIX_FMT_YUYV422 ) { AV_WB32 ( dstp + g , 0xeb80eb80 ) ; x = g + 3 ; } else { dstp [ x ] = plane == 0 ? 235 : 128 ; } } else { if ( is_packed_rgb ) { hi = 255 ; lo = 0 ; } else if ( inlink -> format == AV_PIX_FMT_YUYV422 ) { hi = x & 1 ? 240 : 235 ; lo = 16 ; } else { hi = plane == 0 ? 235 : 240 ; lo = 16 ; } if ( sharp ) { if ( twoway ) { valf = + 0.526 * ( ( int ) srcpp [ x ] + ( int ) srcpn [ x ] ) + 0.170 * ( ( int ) srcp [ x ] + ( int ) prvp [ x ] ) - 0.116 * ( ( int ) srcppp [ x ] + ( int ) srcpnn [ x ] + ( int ) prvppp [ x ] + ( int ) prvpnn [ x ] ) - 0.026 * ( ( int ) srcp3p [ x ] + ( int ) srcp3n [ x ] ) + 0.031 * ( ( int ) srcp4p [ x ] + ( int ) srcp4n [ x ] + ( int ) prvp4p [ x ] + ( int ) prvp4n [ x ] ) ; } else { valf = + 0.526 * ( ( int ) srcpp [ x ] + ( int ) srcpn [ x ] ) + 0.170 * ( ( int ) prvp [ x ] ) - 0.116 * ( ( int ) prvppp [ x ] + ( int ) prvpnn [ x ] ) - 0.026 * ( ( int ) srcp3p [ x ] + ( int ) srcp3n [ x ] ) + 0.031 * ( ( int ) prvp4p [ x ] + ( int ) prvp4p [ x ] ) ; } dstp [ x ] = av_clip ( valf , lo , hi ) ; } else { if ( twoway ) { val = ( 8 * ( ( int ) srcpp [ x ] + ( int ) srcpn [ x ] ) + 2 * ( ( int ) srcp [ x ] + ( int ) prvp [ x ] ) - ( int ) ( srcppp [ x ] ) - ( int ) ( srcpnn [ x ] ) - ( int ) ( prvppp [ x ] ) - ( int ) ( prvpnn [ x ] ) ) >> 4 ; } else { val = ( 8 * ( ( int ) srcpp [ x ] + ( int ) srcpn [ x ] ) + 2 * ( ( int ) prvp [ x ] ) - ( int ) ( prvppp [ x ] ) - ( int ) ( prvpnn [ x ] ) ) >> 4 ; } dstp [ x ] = av_clip ( val , lo , hi ) ; } } } else { dstp [ x ] = srcp [ x ] ; } } prvp += 2 * psrc_linesize ; prvpp += 2 * psrc_linesize ; prvppp += 2 * psrc_linesize ; prvpn += 2 * psrc_linesize ; prvpnn += 2 * psrc_linesize ; prvp4p += 2 * psrc_linesize ; prvp4n += 2 * psrc_linesize ; srcp += 2 * src_linesize ; srcpp += 2 * src_linesize ; srcppp += 2 * src_linesize ; srcp3p += 2 * src_linesize ; srcp4p += 2 * src_linesize ; srcpn += 2 * src_linesize ; srcpnn += 2 * src_linesize ; srcp3n += 2 * src_linesize ; srcp4n += 2 * src_linesize ; dstp += 2 * dst_linesize ; } srcp = inpic -> data [ plane ] ; dstp = kerndeint -> tmp_data [ plane ] ; av_image_copy_plane ( dstp , psrc_linesize , srcp , src_linesize , bwidth , h ) ; } av_frame_free ( & inpic ) ; return ff_filter_frame ( outlink , outpic ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> plane < 4 <S2SV_ModStart> plane < 4 && inpic -> data [ plane ] && inpic -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 int yr_re_match ( RE * re , const char * target ) { return yr_re_exec ( re -> code , ( uint8_t * ) target , strlen ( target ) , <S2SV_StartBug> re -> flags | RE_FLAGS_SCAN , <S2SV_EndBug> NULL , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> target ) , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13039\n\n```\nCWE-125 static const u_char * <S2SV_StartBug> ikev1_attr_print ( netdissect_options * ndo , const u_char * p , const u_char * ep ) <S2SV_EndBug> { int totlen ; uint32_t t ; <S2SV_StartBug> if ( p [ 0 ] & 0x80 ) <S2SV_EndBug> totlen = 4 ; <S2SV_StartBug> else <S2SV_EndBug> totlen = 4 + EXTRACT_16BITS ( & p [ 2 ] ) ; <S2SV_StartBug> if ( ep < p + totlen ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[|attr]\" ) ) ; <S2SV_StartBug> return ep + 1 ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> ND_PRINT ( ( ndo , \"(\" ) ) ; t = EXTRACT_16BITS ( & p [ 0 ] ) & 0x7fff ; ND_PRINT ( ( ndo , \"type=#%d<S2SV_blank>\" , t ) ) ; if ( p [ 0 ] & 0x80 ) { ND_PRINT ( ( ndo , \"value=\" ) ) ; t = p [ 2 ] ; <S2SV_StartBug> rawprint ( ndo , ( const uint8_t * ) & p [ 2 ] , 2 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> ND_PRINT ( ( ndo , \"len=%d<S2SV_blank>value=\" , EXTRACT_16BITS ( & p [ 2 ] ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> rawprint ( ndo , ( const uint8_t * ) & p [ 4 ] , EXTRACT_16BITS ( & p [ 2 ] ) ) ; <S2SV_EndBug> } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_StartBug> return p + totlen ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const u_char * ep2 <S2SV_ModEnd> ) { int <S2SV_ModStart> uint32_t t ; ND_TCHECK ( p [ 0 ] ) ; <S2SV_ModStart> 4 ; else { ND_TCHECK_16BITS ( & p [ 2 ] ) ; <S2SV_ModStart> ] ) ; } if ( ep2 <S2SV_ModEnd> < p + <S2SV_ModStart> ) ; return ep2 <S2SV_ModEnd> + 1 ; <S2SV_ModStart> 1 ; } ND_TCHECK_16BITS ( & p [ 0 ] ) ; <S2SV_ModStart> 2 ] ; if ( ! <S2SV_ModStart> , 2 ) ) { ND_PRINT ( ( ndo , \")\" ) ) ; goto trunc ; } <S2SV_ModEnd> } else { <S2SV_ModStart> , \"len=%d<S2SV_blank>value=\" , totlen - 4 ) ) ; if ( ! <S2SV_ModEnd> rawprint ( ndo <S2SV_ModStart> 4 ] , totlen - 4 ) ) { <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; goto trunc ; } } ND_PRINT ( ( ndo , \")\" ) ) ; <S2SV_ModStart> + totlen ; trunc : return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 static int PredictorDecodeRow ( TIFF * tif , uint8 * op0 , tmsize_t occ0 , uint16 s ) { TIFFPredictorState * sp = PredictorState ( tif ) ; assert ( sp != NULL ) ; assert ( sp -> decoderow != NULL ) ; assert ( sp -> decodepfunc != NULL ) ; if ( ( * sp -> decoderow ) ( tif , op0 , occ0 , s ) ) { <S2SV_StartBug> ( * sp -> decodepfunc ) ( tif , op0 , occ0 ) ; <S2SV_EndBug> <S2SV_StartBug> return 1 ; <S2SV_EndBug> } else return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { return <S2SV_ModStart> occ0 ) ; <S2SV_ModEnd> } else return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int ASN1_verify ( i2d_of_void * i2d , X509_ALGOR * a , ASN1_BIT_STRING * signature , char * data , EVP_PKEY * pkey ) { EVP_MD_CTX ctx ; const EVP_MD * type ; unsigned char * p , * buf_in = NULL ; int ret = - 1 , i , inl ; EVP_MD_CTX_init ( & ctx ) ; i = OBJ_obj2nid ( a -> algorithm ) ; type = EVP_get_digestbyname ( OBJ_nid2sn ( i ) ) ; if ( type == NULL ) { ASN1err ( ASN1_F_ASN1_VERIFY , ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM ) ; goto err ; } <S2SV_StartBug> inl = i2d ( data , NULL ) ; <S2SV_EndBug> buf_in = OPENSSL_malloc ( ( unsigned int ) inl ) ; if ( buf_in == NULL ) { ASN1err ( ASN1_F_ASN1_VERIFY , ERR_R_MALLOC_FAILURE ) ; goto err ; } p = buf_in ; i2d ( data , & p ) ; ret = EVP_VerifyInit_ex ( & ctx , type , NULL ) && EVP_VerifyUpdate ( & ctx , ( unsigned char * ) buf_in , inl ) ; OPENSSL_cleanse ( buf_in , ( unsigned int ) inl ) ; OPENSSL_free ( buf_in ) ; if ( ! ret ) { ASN1err ( ASN1_F_ASN1_VERIFY , ERR_R_EVP_LIB ) ; goto err ; } ret = - 1 ; if ( EVP_VerifyFinal ( & ctx , ( unsigned char * ) signature -> data , ( unsigned int ) signature -> length , pkey ) <= 0 ) { ASN1err ( ASN1_F_ASN1_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } ret = 1 ; err : EVP_MD_CTX_cleanup ( & ctx ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } if ( signature -> type == V_ASN1_BIT_STRING && signature -> flags & 0x7 ) { ASN1err ( ASN1_F_ASN1_VERIFY , ASN1_R_INVALID_BIT_STRING_BITS_LEFT ) ; goto err ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2647\n\n```\nCWE-476 key_ref_t keyring_search ( key_ref_t keyring , struct key_type * type , const char * description ) { struct keyring_search_context ctx = { . index_key . type = type , . index_key . description = description , . cred = current_cred ( ) , <S2SV_StartBug> . match_data . cmp = type -> match , <S2SV_EndBug> . match_data . raw_data = description , . match_data . lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT , . flags = KEYRING_SEARCH_DO_STATE_CHECK , } ; key_ref_t key ; <S2SV_StartBug> int ret ; <S2SV_EndBug> if ( ! ctx . match_data . cmp ) return ERR_PTR ( - ENOKEY ) ; if ( type -> match_preparse ) { ret = type -> match_preparse ( & ctx . match_data ) ; if ( ret < 0 ) return ERR_PTR ( ret ) ; } key = keyring_search_aux ( keyring , & ctx ) ; if ( type -> match_free ) type -> match_free ( & ctx . match_data ) ; return key ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . cmp = key_default_cmp <S2SV_ModEnd> , . match_data <S2SV_ModStart> ; int ret <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7023\n\n```\nCWE-119 int ff_combine_frame ( ParseContext * pc , int next , const uint8_t * * buf , int * buf_size ) { if ( pc -> overread ) { av_dlog ( NULL , \"overread<S2SV_blank>%d,<S2SV_blank>state:%X<S2SV_blank>next:%d<S2SV_blank>index:%d<S2SV_blank>o_index:%d\\\\n\" , pc -> overread , pc -> state , next , pc -> index , pc -> overread_index ) ; av_dlog ( NULL , \"%X<S2SV_blank>%X<S2SV_blank>%X<S2SV_blank>%X\\\\n\" , ( * buf ) [ 0 ] , ( * buf ) [ 1 ] , ( * buf ) [ 2 ] , ( * buf ) [ 3 ] ) ; } for ( ; pc -> overread > 0 ; pc -> overread -- ) { pc -> buffer [ pc -> index ++ ] = pc -> buffer [ pc -> overread_index ++ ] ; } if ( ! * buf_size && next == END_NOT_FOUND ) { next = 0 ; } pc -> last_index = pc -> index ; if ( next == END_NOT_FOUND ) { void * new_buffer = av_fast_realloc ( pc -> buffer , & pc -> buffer_size , ( * buf_size ) + pc -> index + FF_INPUT_BUFFER_PADDING_SIZE ) ; <S2SV_StartBug> if ( ! new_buffer ) <S2SV_EndBug> <S2SV_StartBug> return AVERROR ( ENOMEM ) ; <S2SV_EndBug> pc -> buffer = new_buffer ; memcpy ( & pc -> buffer [ pc -> index ] , * buf , * buf_size ) ; pc -> index += * buf_size ; return - 1 ; } * buf_size = pc -> overread_index = pc -> index + next ; if ( pc -> index ) { void * new_buffer = av_fast_realloc ( pc -> buffer , & pc -> buffer_size , next + pc -> index + FF_INPUT_BUFFER_PADDING_SIZE ) ; <S2SV_StartBug> if ( ! new_buffer ) <S2SV_EndBug> <S2SV_StartBug> return AVERROR ( ENOMEM ) ; <S2SV_EndBug> pc -> buffer = new_buffer ; if ( next > - FF_INPUT_BUFFER_PADDING_SIZE ) memcpy ( & pc -> buffer [ pc -> index ] , * buf , next + FF_INPUT_BUFFER_PADDING_SIZE ) ; pc -> index = 0 ; * buf = pc -> buffer ; } for ( ; next < 0 ; next ++ ) { pc -> state = ( pc -> state << 8 ) | pc -> buffer [ pc -> last_index + next ] ; pc -> state64 = ( pc -> state64 << 8 ) | pc -> buffer [ pc -> last_index + next ] ; pc -> overread ++ ; } if ( pc -> overread ) { av_dlog ( NULL , \"overread<S2SV_blank>%d,<S2SV_blank>state:%X<S2SV_blank>next:%d<S2SV_blank>index:%d<S2SV_blank>o_index:%d\\\\n\" , pc -> overread , pc -> state , next , pc -> index , pc -> overread_index ) ; av_dlog ( NULL , \"%X<S2SV_blank>%X<S2SV_blank>%X<S2SV_blank>%X\\\\n\" , ( * buf ) [ 0 ] , ( * buf ) [ 1 ] , ( * buf ) [ 2 ] , ( * buf ) [ 3 ] ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! new_buffer ) { pc -> index = 0 ; <S2SV_ModStart> ENOMEM ) ; } <S2SV_ModStart> ! new_buffer ) { pc -> overread_index = pc -> index = 0 ; <S2SV_ModStart> ENOMEM ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int fixup_bpf_calls ( struct bpf_verifier_env * env ) { struct bpf_prog * prog = env -> prog ; struct bpf_insn * insn = prog -> insnsi ; const struct bpf_func_proto * fn ; const int insn_cnt = prog -> len ; const struct bpf_map_ops * ops ; struct bpf_insn_aux_data * aux ; struct bpf_insn insn_buf [ 16 ] ; struct bpf_prog * new_prog ; struct bpf_map * map_ptr ; int i , cnt , delta = 0 ; for ( i = 0 ; i < insn_cnt ; i ++ , insn ++ ) { if ( insn -> code == ( BPF_ALU64 | BPF_MOD | BPF_X ) || insn -> code == ( BPF_ALU64 | BPF_DIV | BPF_X ) || insn -> code == ( BPF_ALU | BPF_MOD | BPF_X ) || insn -> code == ( BPF_ALU | BPF_DIV | BPF_X ) ) { bool is64 = BPF_CLASS ( insn -> code ) == BPF_ALU64 ; struct bpf_insn mask_and_div [ ] = { BPF_MOV32_REG ( insn -> src_reg , insn -> src_reg ) , BPF_JMP_IMM ( BPF_JNE , insn -> src_reg , 0 , 2 ) , BPF_ALU32_REG ( BPF_XOR , insn -> dst_reg , insn -> dst_reg ) , BPF_JMP_IMM ( BPF_JA , 0 , 0 , 1 ) , * insn , } ; struct bpf_insn mask_and_mod [ ] = { BPF_MOV32_REG ( insn -> src_reg , insn -> src_reg ) , BPF_JMP_IMM ( BPF_JEQ , insn -> src_reg , 0 , 1 ) , * insn , } ; struct bpf_insn * patchlet ; if ( insn -> code == ( BPF_ALU64 | BPF_DIV | BPF_X ) || insn -> code == ( BPF_ALU | BPF_DIV | BPF_X ) ) { patchlet = mask_and_div + ( is64 ? 1 : 0 ) ; cnt = ARRAY_SIZE ( mask_and_div ) - ( is64 ? 1 : 0 ) ; } else { patchlet = mask_and_mod + ( is64 ? 1 : 0 ) ; cnt = ARRAY_SIZE ( mask_and_mod ) - ( is64 ? 1 : 0 ) ; } new_prog = bpf_patch_insn_data ( env , i + delta , patchlet , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } if ( BPF_CLASS ( insn -> code ) == BPF_LD && ( BPF_MODE ( insn -> code ) == BPF_ABS || BPF_MODE ( insn -> code ) == BPF_IND ) ) { cnt = env -> ops -> gen_ld_abs ( insn , insn_buf ) ; if ( cnt == 0 || cnt >= ARRAY_SIZE ( insn_buf ) ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } <S2SV_StartBug> if ( insn -> code != ( BPF_JMP | BPF_CALL ) ) <S2SV_EndBug> continue ; if ( insn -> src_reg == BPF_PSEUDO_CALL ) continue ; if ( insn -> imm == BPF_FUNC_get_route_realm ) prog -> dst_needed = 1 ; if ( insn -> imm == BPF_FUNC_get_prandom_u32 ) bpf_user_rnd_init_once ( ) ; if ( insn -> imm == BPF_FUNC_override_return ) prog -> kprobe_override = 1 ; if ( insn -> imm == BPF_FUNC_tail_call ) { prog -> cb_access = 1 ; env -> prog -> aux -> stack_depth = MAX_BPF_STACK ; env -> prog -> aux -> max_pkt_offset = MAX_PACKET_OFF ; insn -> imm = 0 ; insn -> code = BPF_JMP | BPF_TAIL_CALL ; aux = & env -> insn_aux_data [ i + delta ] ; <S2SV_StartBug> if ( ! bpf_map_ptr_unpriv ( aux ) ) <S2SV_EndBug> continue ; <S2SV_StartBug> if ( bpf_map_ptr_poisoned ( aux ) ) { <S2SV_EndBug> verbose ( env , \"tail_call<S2SV_blank>abusing<S2SV_blank>map_ptr\\\\n\" ) ; return - EINVAL ; } map_ptr = BPF_MAP_PTR ( aux -> map_state ) ; insn_buf [ 0 ] = BPF_JMP_IMM ( BPF_JGE , BPF_REG_3 , map_ptr -> max_entries , 2 ) ; insn_buf [ 1 ] = BPF_ALU32_IMM ( BPF_AND , BPF_REG_3 , container_of ( map_ptr , struct bpf_array , map ) -> index_mask ) ; insn_buf [ 2 ] = * insn ; cnt = 3 ; new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } <S2SV_StartBug> if ( prog -> jit_requested && BITS_PER_LONG == 64 && <S2SV_EndBug> ( insn -> imm == BPF_FUNC_map_lookup_elem || insn -> imm == BPF_FUNC_map_update_elem || insn -> imm == BPF_FUNC_map_delete_elem || insn -> imm == BPF_FUNC_map_push_elem || insn -> imm == BPF_FUNC_map_pop_elem || insn -> imm == BPF_FUNC_map_peek_elem ) ) { aux = & env -> insn_aux_data [ i + delta ] ; <S2SV_StartBug> if ( bpf_map_ptr_poisoned ( aux ) ) <S2SV_EndBug> <S2SV_StartBug> goto patch_call_imm ; <S2SV_EndBug> map_ptr = BPF_MAP_PTR ( aux -> map_state ) ; <S2SV_StartBug> ops = map_ptr -> ops ; <S2SV_EndBug> if ( insn -> imm == BPF_FUNC_map_lookup_elem && ops -> map_gen_lookup ) { <S2SV_StartBug> cnt = ops -> map_gen_lookup ( map_ptr , insn_buf ) ; <S2SV_EndBug> if ( cnt == 0 || cnt >= ARRAY_SIZE ( insn_buf ) ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } <S2SV_StartBug> BUILD_BUG_ON ( ! __same_type ( ops -> map_lookup_elem , <S2SV_EndBug> ( void * ( * ) ( struct bpf_map * map , void * key ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_delete_elem , ( int ( * ) ( struct bpf_map * map , void * key ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_update_elem , ( int ( * ) ( struct bpf_map * map , void * key , void * value , u64 flags ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_push_elem , ( int ( * ) ( struct bpf_map * map , void * value , u64 flags ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_pop_elem , ( int ( * ) ( struct bpf_map * map , void * value ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_peek_elem , ( int ( * ) ( struct bpf_map * map , void * value ) ) NULL ) ) ; switch ( insn -> imm ) { case BPF_FUNC_map_lookup_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_lookup_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_update_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_update_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_delete_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_delete_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_push_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_push_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_pop_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_pop_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_peek_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_peek_elem ) - __bpf_call_base ; continue ; } goto patch_call_imm ; } patch_call_imm : fn = env -> ops -> get_func_proto ( insn -> imm , env -> prog ) ; if ( ! fn -> func ) { verbose ( env , \"kernel<S2SV_blank>subsystem<S2SV_blank>misconfigured<S2SV_blank>func<S2SV_blank>%s#%d\\\\n\" , func_id_name ( insn -> imm ) , insn -> imm ) ; return - EFAULT ; } insn -> imm = fn -> func - __bpf_call_base ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> insn -> code == ( BPF_ALU64 | BPF_ADD | BPF_X ) || insn -> code == ( BPF_ALU64 | BPF_SUB | BPF_X ) ) { const u8 code_add = BPF_ALU64 | BPF_ADD | BPF_X ; const u8 code_sub = BPF_ALU64 | BPF_SUB | BPF_X ; struct bpf_insn insn_buf [ 16 ] ; struct bpf_insn * patch = & insn_buf [ 0 ] ; bool issrc , isneg ; u32 off_reg <S2SV_ModEnd> ; aux = <S2SV_ModStart> if ( ! aux -> alu_state <S2SV_ModEnd> ) continue ; <S2SV_ModStart> ) continue ; isneg = aux -> alu_state & BPF_ALU_NEG_VALUE ; issrc = ( aux -> alu_state & BPF_ALU_SANITIZE ) == BPF_ALU_SANITIZE_SRC ; off_reg = issrc ? insn -> src_reg : insn -> dst_reg ; if ( isneg ) * patch ++ = BPF_ALU64_IMM ( BPF_MUL , off_reg , - 1 ) ; * patch ++ = BPF_MOV32_IMM ( BPF_REG_AX , aux -> alu_limit - 1 ) ; * patch ++ = BPF_ALU64_REG ( BPF_SUB , BPF_REG_AX , off_reg ) ; * patch ++ = BPF_ALU64_REG ( BPF_OR , BPF_REG_AX , off_reg ) ; * patch ++ = BPF_ALU64_IMM ( BPF_NEG , BPF_REG_AX , 0 ) ; * patch ++ = BPF_ALU64_IMM ( BPF_ARSH , BPF_REG_AX , 63 ) ; if ( issrc ) { * patch ++ = BPF_ALU64_REG ( BPF_AND , BPF_REG_AX , off_reg ) ; insn -> src_reg = BPF_REG_AX ; } else { * patch ++ = BPF_ALU64_REG ( BPF_AND , off_reg , BPF_REG_AX ) ; } if ( isneg ) insn -> code = insn -> code == code_add ? code_sub : code_add ; * patch ++ = * insn ; if ( issrc && isneg ) * patch ++ = BPF_ALU64_IMM ( BPF_MUL , off_reg , - 1 ) ; cnt = patch - insn_buf <S2SV_ModEnd> ; new_prog = <S2SV_ModStart> } if ( insn -> code != ( BPF_JMP | BPF_CALL ) ) continue ; if ( insn -> src_reg == BPF_PSEUDO_CALL ) continue ; if ( insn -> imm == BPF_FUNC_get_route_realm ) prog -> dst_needed = 1 ; if ( insn -> imm == BPF_FUNC_get_prandom_u32 ) bpf_user_rnd_init_once ( ) ; if ( insn -> imm == BPF_FUNC_override_return ) prog -> kprobe_override = 1 ; if ( insn -> imm == BPF_FUNC_tail_call ) { prog -> cb_access = 1 ; env -> prog -> aux -> stack_depth = MAX_BPF_STACK ; env -> prog -> aux -> max_pkt_offset = MAX_PACKET_OFF ; insn -> imm = 0 ; insn -> code = BPF_JMP | BPF_TAIL_CALL ; <S2SV_ModEnd> aux = & <S2SV_ModStart> ; if ( ! bpf_map_ptr_unpriv ( aux ) ) continue ; if ( <S2SV_ModStart> aux ) ) { verbose ( env , \"tail_call<S2SV_blank>abusing<S2SV_blank>map_ptr\\\\n\" ) ; return - EINVAL ; } <S2SV_ModEnd> map_ptr = BPF_MAP_PTR <S2SV_ModStart> map_state ) ; insn_buf [ 0 ] = BPF_JMP_IMM ( BPF_JGE , BPF_REG_3 , map_ptr -> max_entries , 2 ) ; insn_buf [ 1 ] = BPF_ALU32_IMM ( BPF_AND , BPF_REG_3 , container_of <S2SV_ModEnd> ( map_ptr , <S2SV_ModStart> ( map_ptr , struct bpf_array , map ) -> index_mask ) ; insn_buf [ 2 ] = * insn ; cnt = 3 ; <S2SV_ModEnd> new_prog = bpf_patch_insn_data <S2SV_ModStart> continue ; } if ( prog -> jit_requested && BITS_PER_LONG == 64 && ( insn -> imm == BPF_FUNC_map_lookup_elem || insn -> imm == BPF_FUNC_map_update_elem || insn -> imm == BPF_FUNC_map_delete_elem || insn -> imm == BPF_FUNC_map_push_elem || insn -> imm == BPF_FUNC_map_pop_elem || insn -> imm == BPF_FUNC_map_peek_elem ) ) { aux = & env -> insn_aux_data [ i + delta ] ; if ( bpf_map_ptr_poisoned ( aux ) ) goto patch_call_imm ; map_ptr = BPF_MAP_PTR ( aux -> map_state ) ; ops = map_ptr -> ops ; if ( insn -> imm == BPF_FUNC_map_lookup_elem && ops -> map_gen_lookup ) { cnt = ops -> map_gen_lookup ( map_ptr , insn_buf ) ; if ( cnt == 0 || cnt >= ARRAY_SIZE ( insn_buf ) ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15681\n\n```\nCWE-665 void rfbSendServerCutText ( rfbScreenInfoPtr rfbScreen , char * str , int len ) { rfbClientPtr cl ; rfbServerCutTextMsg sct ; rfbClientIteratorPtr iterator ; <S2SV_StartBug> iterator = rfbGetClientIterator ( rfbScreen ) ; <S2SV_EndBug> while ( ( cl = rfbClientIteratorNext ( iterator ) ) != NULL ) { sct . type = rfbServerCutText ; sct . length = Swap32IfLE ( len ) ; LOCK ( cl -> sendMutex ) ; if ( rfbWriteExact ( cl , ( char * ) & sct , sz_rfbServerCutTextMsg ) < 0 ) { rfbLogPerror ( \"rfbSendServerCutText:<S2SV_blank>write\" ) ; rfbCloseClient ( cl ) ; UNLOCK ( cl -> sendMutex ) ; continue ; } if ( rfbWriteExact ( cl , str , len ) < 0 ) { rfbLogPerror ( \"rfbSendServerCutText:<S2SV_blank>write\" ) ; rfbCloseClient ( cl ) ; } UNLOCK ( cl -> sendMutex ) ; rfbStatRecordMessageSent ( cl , rfbServerCutText , sz_rfbServerCutTextMsg + len , sz_rfbServerCutTextMsg + len ) ; } rfbReleaseClientIterator ( iterator ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rfbClientIteratorPtr iterator ; memset ( ( char * ) & sct , 0 , sizeof ( sct ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11048\n\n```\nCWE-125 BOOL rdp_read_share_control_header ( wStream * s , UINT16 * length , UINT16 * type , UINT16 * channel_id ) { <S2SV_StartBug> if ( Stream_GetRemainingLength ( s ) < 2 ) <S2SV_EndBug> return FALSE ; <S2SV_StartBug> Stream_Read_UINT16 ( s , * length ) ; <S2SV_EndBug> <S2SV_StartBug> if ( * length == 0x8000 ) <S2SV_EndBug> { <S2SV_StartBug> rdp_read_flow_control_pdu ( s , type ) ; <S2SV_EndBug> * channel_id = 0 ; * length = 8 ; return TRUE ; } <S2SV_StartBug> if ( ( ( size_t ) * length - 2 ) > Stream_GetRemainingLength ( s ) ) <S2SV_EndBug> return FALSE ; Stream_Read_UINT16 ( s , * type ) ; * type &= 0x0F ; <S2SV_StartBug> if ( * length > 4 ) <S2SV_EndBug> Stream_Read_UINT16 ( s , * channel_id ) ; else * channel_id = 0 ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> channel_id ) { UINT16 len ; <S2SV_ModStart> ( s , len ) ; * length = len <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; if ( len <S2SV_ModEnd> == 0x8000 ) <S2SV_ModStart> 0x8000 ) { if ( ! <S2SV_ModStart> , type ) ) return FALSE <S2SV_ModStart> if ( ( len < 4 ) || ( ( len <S2SV_ModEnd> - 2 ) <S2SV_ModStart> Stream_GetRemainingLength ( s ) <S2SV_ModStart> ; if ( len <S2SV_ModEnd> > 4 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static int tap_if_up ( const char * devname , const bt_bdaddr_t * addr ) { struct ifreq ifr ; int sk , err ; sk = socket ( AF_INET , SOCK_DGRAM , 0 ) ; if ( sk < 0 ) return - 1 ; memset ( & ifr , 0 , sizeof ( ifr ) ) ; strncpy ( ifr . ifr_name , devname , IFNAMSIZ - 1 ) ; <S2SV_StartBug> err = ioctl ( sk , SIOCGIFHWADDR , & ifr ) ; <S2SV_EndBug> if ( err < 0 ) { BTIF_TRACE_ERROR ( \"Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>network<S2SV_blank>hardware<S2SV_blank>for<S2SV_blank>interface:%s,<S2SV_blank>errno:%s\" , devname , strerror ( errno ) ) ; close ( sk ) ; return - 1 ; } strncpy ( ifr . ifr_name , devname , IFNAMSIZ - 1 ) ; memcpy ( ifr . ifr_hwaddr . sa_data , addr -> address , 6 ) ; if ( ifr . ifr_hwaddr . sa_data [ 0 ] & 0x01 ) { BTIF_TRACE_WARNING ( \"Not<S2SV_blank>a<S2SV_blank>unicast<S2SV_blank>MAC<S2SV_blank>address,<S2SV_blank>force<S2SV_blank>multicast<S2SV_blank>bit<S2SV_blank>flipping\" ) ; ifr . ifr_hwaddr . sa_data [ 0 ] &= ~ 0x01 ; } <S2SV_StartBug> err = ioctl ( sk , SIOCSIFHWADDR , ( caddr_t ) & ifr ) ; <S2SV_EndBug> if ( err < 0 ) { BTIF_TRACE_ERROR ( \"Could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>bt<S2SV_blank>address<S2SV_blank>for<S2SV_blank>interface:%s,<S2SV_blank>errno:%s\" , devname , strerror ( errno ) ) ; close ( sk ) ; return - 1 ; } memset ( & ifr , 0 , sizeof ( ifr ) ) ; strncpy ( ifr . ifr_name , devname , IF_NAMESIZE - 1 ) ; ifr . ifr_flags |= IFF_UP ; ifr . ifr_flags |= IFF_MULTICAST ; <S2SV_StartBug> err = ioctl ( sk , SIOCSIFFLAGS , ( caddr_t ) & ifr ) ; <S2SV_EndBug> if ( err < 0 ) { BTIF_TRACE_ERROR ( \"Could<S2SV_blank>not<S2SV_blank>bring<S2SV_blank>up<S2SV_blank>network<S2SV_blank>interface:%s,<S2SV_blank>errno:%d\" , devname , errno ) ; close ( sk ) ; return - 1 ; } close ( sk ) ; BTIF_TRACE_DEBUG ( \"network<S2SV_blank>interface:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>up\" , devname ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; err = TEMP_FAILURE_RETRY ( <S2SV_ModStart> , & ifr ) <S2SV_ModStart> } err = TEMP_FAILURE_RETRY ( <S2SV_ModStart> ) & ifr ) <S2SV_ModStart> ; err = TEMP_FAILURE_RETRY ( <S2SV_ModStart> & ifr ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int get_down2_steps ( int in_length , int out_length ) { <S2SV_EndBug> int steps = 0 ; int proj_in_length ; while ( ( proj_in_length = get_down2_length ( in_length , 1 ) ) >= out_length ) { ++ steps ; in_length = proj_in_length ; } return steps ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * ch_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { <S2SV_StartBug> if ( * rsize >= 17 && rdesc [ 11 ] == 0x3c && rdesc [ 12 ] == 0x02 ) { <S2SV_EndBug> hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>Cherry<S2SV_blank>Cymotion<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 11 ] = rdesc [ 16 ] = 0xff ; rdesc [ 12 ] = rdesc [ 17 ] = 0x03 ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 18 <S2SV_ModEnd> && rdesc [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16643\n\n```\nCWE-125 static void parse_hid_report_descriptor ( struct gtco * device , char * report , int length ) { struct device * ddev = & device -> intf -> dev ; int x , i = 0 ; __u8 prefix ; __u8 size ; __u8 tag ; __u8 type ; __u8 data = 0 ; __u16 data16 = 0 ; __u32 data32 = 0 ; int inputnum = 0 ; __u32 usage = 0 ; __u32 globalval [ TAG_GLOB_MAX ] ; __u32 oldval [ TAG_GLOB_MAX ] ; char maintype = 'x' ; char globtype [ 12 ] ; int indent = 0 ; char indentstr [ 10 ] = \"\" ; dev_dbg ( ddev , \"======>>>>>>PARSE<<<<<<======\\\\n\" ) ; while ( i < length ) { <S2SV_StartBug> prefix = report [ i ] ; <S2SV_EndBug> i ++ ; size = PREF_SIZE ( prefix ) ; switch ( size ) { case 1 : data = report [ i ] ; break ; case 2 : data16 = get_unaligned_le16 ( & report [ i ] ) ; break ; <S2SV_StartBug> case 3 : <S2SV_EndBug> size = 4 ; data32 = get_unaligned_le32 ( & report [ i ] ) ; break ; } i += size ; tag = PREF_TAG ( prefix ) ; type = PREF_TYPE ( prefix ) ; switch ( type ) { case TYPE_MAIN : strcpy ( globtype , \"\" ) ; switch ( tag ) { case TAG_MAIN_INPUT : maintype = 'I' ; if ( data == 2 ) strcpy ( globtype , \"Variable\" ) ; else if ( data == 3 ) strcpy ( globtype , \"Var|Const\" ) ; dev_dbg ( ddev , \":::::<S2SV_blank>Saving<S2SV_blank>Report:<S2SV_blank>%d<S2SV_blank>input<S2SV_blank>#%d<S2SV_blank>Max:<S2SV_blank>0x%X(%d)<S2SV_blank>Min:0x%X(%d)<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bits\\\\n\" , globalval [ TAG_GLOB_REPORT_ID ] , inputnum , globalval [ TAG_GLOB_LOG_MAX ] , globalval [ TAG_GLOB_LOG_MAX ] , globalval [ TAG_GLOB_LOG_MIN ] , globalval [ TAG_GLOB_LOG_MIN ] , globalval [ TAG_GLOB_REPORT_SZ ] * globalval [ TAG_GLOB_REPORT_CNT ] ) ; switch ( inputnum ) { case 0 : dev_dbg ( ddev , \"GER:<S2SV_blank>X<S2SV_blank>Usage:<S2SV_blank>0x%x\\\\n\" , usage ) ; if ( device -> max_X == 0 ) { device -> max_X = globalval [ TAG_GLOB_LOG_MAX ] ; device -> min_X = globalval [ TAG_GLOB_LOG_MIN ] ; } break ; case 1 : dev_dbg ( ddev , \"GER:<S2SV_blank>Y<S2SV_blank>Usage:<S2SV_blank>0x%x\\\\n\" , usage ) ; if ( device -> max_Y == 0 ) { device -> max_Y = globalval [ TAG_GLOB_LOG_MAX ] ; device -> min_Y = globalval [ TAG_GLOB_LOG_MIN ] ; } break ; default : if ( usage == DIGITIZER_USAGE_TILT_X ) { if ( device -> maxtilt_X == 0 ) { device -> maxtilt_X = globalval [ TAG_GLOB_LOG_MAX ] ; device -> mintilt_X = globalval [ TAG_GLOB_LOG_MIN ] ; } } if ( usage == DIGITIZER_USAGE_TILT_Y ) { if ( device -> maxtilt_Y == 0 ) { device -> maxtilt_Y = globalval [ TAG_GLOB_LOG_MAX ] ; device -> mintilt_Y = globalval [ TAG_GLOB_LOG_MIN ] ; } } if ( usage == DIGITIZER_USAGE_TIP_PRESSURE ) { if ( device -> maxpressure == 0 ) { device -> maxpressure = globalval [ TAG_GLOB_LOG_MAX ] ; device -> minpressure = globalval [ TAG_GLOB_LOG_MIN ] ; } } break ; } inputnum ++ ; break ; case TAG_MAIN_OUTPUT : maintype = 'O' ; break ; case TAG_MAIN_FEATURE : maintype = 'F' ; break ; case TAG_MAIN_COL_START : maintype = 'S' ; if ( data == 0 ) { dev_dbg ( ddev , \"======>>>>>><S2SV_blank>Physical\\\\n\" ) ; strcpy ( globtype , \"Physical\" ) ; } else dev_dbg ( ddev , \"======>>>>>>\\\\n\" ) ; indent ++ ; for ( x = 0 ; x < indent ; x ++ ) indentstr [ x ] = '-' ; indentstr [ x ] = 0 ; for ( x = 0 ; x < TAG_GLOB_MAX ; x ++ ) oldval [ x ] = globalval [ x ] ; break ; case TAG_MAIN_COL_END : dev_dbg ( ddev , \"<<<<<<======\\\\n\" ) ; maintype = 'E' ; indent -- ; for ( x = 0 ; x < indent ; x ++ ) indentstr [ x ] = '-' ; indentstr [ x ] = 0 ; for ( x = 0 ; x < TAG_GLOB_MAX ; x ++ ) globalval [ x ] = oldval [ x ] ; break ; } switch ( size ) { case 1 : dev_dbg ( ddev , \"%sMAINTAG:(%d)<S2SV_blank>%c<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>%s<S2SV_blank>0x%x\\\\n\" , indentstr , tag , maintype , size , globtype , data ) ; break ; case 2 : dev_dbg ( ddev , \"%sMAINTAG:(%d)<S2SV_blank>%c<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>%s<S2SV_blank>0x%x\\\\n\" , indentstr , tag , maintype , size , globtype , data16 ) ; break ; case 4 : dev_dbg ( ddev , \"%sMAINTAG:(%d)<S2SV_blank>%c<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>%s<S2SV_blank>0x%x\\\\n\" , indentstr , tag , maintype , size , globtype , data32 ) ; break ; } break ; case TYPE_GLOBAL : switch ( tag ) { case TAG_GLOB_USAGE : if ( device -> usage == 0 ) device -> usage = data ; strcpy ( globtype , \"USAGE\" ) ; break ; case TAG_GLOB_LOG_MIN : strcpy ( globtype , \"LOG_MIN\" ) ; break ; case TAG_GLOB_LOG_MAX : strcpy ( globtype , \"LOG_MAX\" ) ; break ; case TAG_GLOB_PHYS_MIN : strcpy ( globtype , \"PHYS_MIN\" ) ; break ; case TAG_GLOB_PHYS_MAX : strcpy ( globtype , \"PHYS_MAX\" ) ; break ; case TAG_GLOB_UNIT_EXP : strcpy ( globtype , \"EXP\" ) ; break ; case TAG_GLOB_UNIT : strcpy ( globtype , \"UNIT\" ) ; break ; case TAG_GLOB_REPORT_SZ : strcpy ( globtype , \"REPORT_SZ\" ) ; break ; case TAG_GLOB_REPORT_ID : strcpy ( globtype , \"REPORT_ID\" ) ; inputnum = 0 ; break ; case TAG_GLOB_REPORT_CNT : strcpy ( globtype , \"REPORT_CNT\" ) ; break ; case TAG_GLOB_PUSH : strcpy ( globtype , \"PUSH\" ) ; break ; case TAG_GLOB_POP : strcpy ( globtype , \"POP\" ) ; break ; } if ( tag < TAG_GLOB_MAX ) { switch ( size ) { case 1 : dev_dbg ( ddev , \"%sGLOBALTAG:%s(%d)<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , globtype , tag , size , data ) ; globalval [ tag ] = data ; break ; case 2 : dev_dbg ( ddev , \"%sGLOBALTAG:%s(%d)<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , globtype , tag , size , data16 ) ; globalval [ tag ] = data16 ; break ; case 4 : dev_dbg ( ddev , \"%sGLOBALTAG:%s(%d)<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , globtype , tag , size , data32 ) ; globalval [ tag ] = data32 ; break ; } } else { dev_dbg ( ddev , \"%sGLOBALTAG:<S2SV_blank>ILLEGAL<S2SV_blank>TAG:%d<S2SV_blank>SIZE:<S2SV_blank>%d\\\\n\" , indentstr , tag , size ) ; } break ; case TYPE_LOCAL : switch ( tag ) { case TAG_GLOB_USAGE : strcpy ( globtype , \"USAGE\" ) ; usage = data ; break ; case TAG_GLOB_LOG_MIN : strcpy ( globtype , \"MIN\" ) ; break ; case TAG_GLOB_LOG_MAX : strcpy ( globtype , \"MAX\" ) ; break ; default : strcpy ( globtype , \"UNKNOWN\" ) ; break ; } switch ( size ) { case 1 : dev_dbg ( ddev , \"%sLOCALTAG:(%d)<S2SV_blank>%s<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , tag , globtype , size , data ) ; break ; case 2 : dev_dbg ( ddev , \"%sLOCALTAG:(%d)<S2SV_blank>%s<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , tag , globtype , size , data16 ) ; break ; case 4 : dev_dbg ( ddev , \"%sLOCALTAG:(%d)<S2SV_blank>%s<S2SV_blank>SIZE:<S2SV_blank>%d<S2SV_blank>Data:<S2SV_blank>0x%x\\\\n\" , indentstr , tag , globtype , size , data32 ) ; break ; } break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> report [ i ++ ] ; size = ( 1U << PREF_SIZE ( prefix ) ) >> 1 ; if ( i + size > length ) { dev_err ( ddev , \"Not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>(need<S2SV_blank>%d,<S2SV_blank>have<S2SV_blank>%d)\\\\n\" , i + size , length ) ; break ; } <S2SV_ModEnd> switch ( size <S2SV_ModStart> break ; case 4 : <S2SV_ModEnd> data32 = get_unaligned_le32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0207\n\n```\nCWE-119 private int cdf_file_summary_info ( struct magic_set * ms , const cdf_header_t * h , <S2SV_StartBug> const cdf_stream_t * sst , const uint64_t clsid [ 2 ] ) <S2SV_EndBug> { cdf_summary_info_header_t si ; cdf_property_info_t * info ; size_t count ; int m ; if ( cdf_unpack_summary_info ( sst , h , & si , & info , & count ) == - 1 ) return - 1 ; if ( NOTMIME ( ms ) ) { const char * str ; if ( file_printf ( ms , \"Composite<S2SV_blank>Document<S2SV_blank>File<S2SV_blank>V2<S2SV_blank>Document\" ) == - 1 ) return - 1 ; if ( file_printf ( ms , \",<S2SV_blank>%s<S2SV_blank>Endian\" , si . si_byte_order == 0xfffe ? \"Little\" : \"Big\" ) == - 1 ) return - 2 ; switch ( si . si_os ) { case 2 : if ( file_printf ( ms , \",<S2SV_blank>Os:<S2SV_blank>Windows,<S2SV_blank>Version<S2SV_blank>%d.%d\" , si . si_os_version & 0xff , ( uint32_t ) si . si_os_version >> 8 ) == - 1 ) return - 2 ; break ; case 1 : if ( file_printf ( ms , \",<S2SV_blank>Os:<S2SV_blank>MacOS,<S2SV_blank>Version<S2SV_blank>%d.%d\" , ( uint32_t ) si . si_os_version >> 8 , si . si_os_version & 0xff ) == - 1 ) return - 2 ; break ; default : if ( file_printf ( ms , \",<S2SV_blank>Os<S2SV_blank>%d,<S2SV_blank>Version:<S2SV_blank>%d.%d\" , si . si_os , si . si_os_version & 0xff , ( uint32_t ) si . si_os_version >> 8 ) == - 1 ) return - 2 ; break ; } <S2SV_StartBug> str = cdf_clsid_to_mime ( clsid , clsid2desc ) ; <S2SV_EndBug> if ( str ) if ( file_printf ( ms , \",<S2SV_blank>%s\" , str ) == - 1 ) <S2SV_StartBug> return - 2 ; <S2SV_EndBug> } <S2SV_StartBug> m = cdf_file_property_info ( ms , info , count , clsid ) ; <S2SV_EndBug> free ( info ) ; return m == - 1 ? - 2 : m ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sst , const cdf_directory_t * root_storage <S2SV_ModEnd> ) { cdf_summary_info_header_t <S2SV_ModStart> break ; } if ( root_storage ) { <S2SV_ModStart> = cdf_clsid_to_mime ( root_storage -> d_storage_uuid <S2SV_ModEnd> , clsid2desc ) <S2SV_ModStart> - 2 ; } <S2SV_ModStart> , count , root_storage <S2SV_ModEnd> ) ; free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 node * PyParser_ParseStringObject ( const char * s , PyObject * filename , grammar * g , int start , perrdetail * err_ret , int * flags ) { struct tok_state * tok ; int exec_input = start == file_input ; if ( initerr ( err_ret , filename ) < 0 ) return NULL ; if ( * flags & PyPARSE_IGNORE_COOKIE ) tok = PyTokenizer_FromUTF8 ( s , exec_input ) ; else tok = PyTokenizer_FromString ( s , exec_input ) ; if ( tok == NULL ) { err_ret -> error = PyErr_Occurred ( ) ? E_DECODE : E_NOMEM ; return NULL ; } <S2SV_StartBug> # ifndef PGEN <S2SV_EndBug> Py_INCREF ( err_ret -> filename ) ; tok -> filename = err_ret -> filename ; # endif return parsetok ( tok , g , start , err_ret , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } if ( * flags & PyPARSE_TYPE_COMMENTS ) { tok -> type_comments = 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void set_segment_id ( VP9_COMMON * cm , BLOCK_SIZE bsize , <S2SV_EndBug> int mi_row , int mi_col , int segment_id ) { <S2SV_StartBug> const int mi_offset = mi_row * cm -> mi_cols + mi_col ; <S2SV_EndBug> const int bw = num_8x8_blocks_wide_lookup [ bsize ] ; const int bh = num_8x8_blocks_high_lookup [ bsize ] ; const int xmis = MIN ( cm -> mi_cols - mi_col , bw ) ; const int ymis = MIN ( cm -> mi_rows - mi_row , bh ) ; int x , y ; assert ( segment_id >= 0 && segment_id < MAX_SEGMENTS ) ; <S2SV_StartBug> for ( y = 0 ; y < ymis ; y ++ ) <S2SV_EndBug> <S2SV_StartBug> for ( x = 0 ; x < xmis ; x ++ ) <S2SV_EndBug> <S2SV_StartBug> cm -> last_frame_seg_map [ mi_offset + y * cm -> mi_cols + x ] = segment_id ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cm , int mi_offset , int x_mis , int y_mis <S2SV_ModEnd> , int segment_id <S2SV_ModStart> segment_id ) { <S2SV_ModEnd> int x , <S2SV_ModStart> ; y < y_mis <S2SV_ModEnd> ; y ++ <S2SV_ModStart> ; x < x_mis <S2SV_ModEnd> ; x ++ <S2SV_ModStart> ) cm -> current_frame_seg_map <S2SV_ModEnd> [ mi_offset +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 int key_reject_and_link ( struct key * key , unsigned timeout , unsigned error , struct key * keyring , struct key * authkey ) { struct assoc_array_edit * edit ; struct timespec now ; int ret , awaken , link_ret = 0 ; key_check ( key ) ; key_check ( keyring ) ; awaken = 0 ; ret = - EBUSY ; if ( keyring ) { if ( keyring -> restrict_link ) return - EPERM ; link_ret = __key_link_begin ( keyring , & key -> index_key , & edit ) ; } mutex_lock ( & key_construction_mutex ) ; <S2SV_StartBug> if ( ! test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) { <S2SV_EndBug> atomic_inc ( & key -> user -> nikeys ) ; <S2SV_StartBug> key -> reject_error = - error ; <S2SV_EndBug> smp_wmb ( ) ; set_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ; set_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ; now = current_kernel_time ( ) ; key -> expiry = now . tv_sec + timeout ; key_schedule_gc ( key -> expiry + key_gc_delay ) ; if ( test_and_clear_bit ( KEY_FLAG_USER_CONSTRUCT , & key -> flags ) ) awaken = 1 ; ret = 0 ; if ( keyring && link_ret == 0 ) __key_link ( key , & edit ) ; if ( authkey ) key_revoke ( authkey ) ; } mutex_unlock ( & key_construction_mutex ) ; if ( keyring && link_ret == 0 ) __key_link_end ( keyring , & key -> index_key , edit ) ; if ( awaken ) wake_up_bit ( & key -> flags , KEY_FLAG_USER_CONSTRUCT ) ; return ret == 0 ? link_ret : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key -> state == KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) { atomic_inc <S2SV_ModStart> nikeys ) ; mark_key_instantiated ( key , - error <S2SV_ModEnd> ) ; now\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0237\n\n```\nCWE-399 int cdf_unpack_summary_info ( const cdf_stream_t * sst , const cdf_header_t * h , cdf_summary_info_header_t * ssi , cdf_property_info_t * * info , size_t * count ) { <S2SV_StartBug> size_t i , maxcount ; <S2SV_EndBug> const cdf_summary_info_header_t * si = CAST ( const cdf_summary_info_header_t * , sst -> sst_tab ) ; const cdf_section_declaration_t * sd = CAST ( const cdf_section_declaration_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + CDF_SECTION_DECLARATION_OFFSET ) ) ; if ( cdf_check_stream_offset ( sst , h , si , sizeof ( * si ) , __LINE__ ) == - 1 || cdf_check_stream_offset ( sst , h , sd , sizeof ( * sd ) , __LINE__ ) == - 1 ) return - 1 ; ssi -> si_byte_order = CDF_TOLE2 ( si -> si_byte_order ) ; ssi -> si_os_version = CDF_TOLE2 ( si -> si_os_version ) ; ssi -> si_os = CDF_TOLE2 ( si -> si_os ) ; ssi -> si_class = si -> si_class ; cdf_swap_class ( & ssi -> si_class ) ; <S2SV_StartBug> ssi -> si_count = CDF_TOLE2 ( si -> si_count ) ; <S2SV_EndBug> * count = 0 ; maxcount = 0 ; * info = NULL ; <S2SV_StartBug> for ( i = 0 ; i < CDF_TOLE4 ( si -> si_count ) ; i ++ ) { <S2SV_EndBug> if ( i >= CDF_LOOP_LIMIT ) { DPRINTF ( ( \"Unpack<S2SV_blank>summary<S2SV_blank>info<S2SV_blank>loop<S2SV_blank>limit\" ) ) ; errno = EFTYPE ; return - 1 ; } if ( cdf_read_property_info ( sst , h , CDF_TOLE4 ( sd -> sd_offset ) , <S2SV_StartBug> info , count , & maxcount ) == - 1 ) { <S2SV_EndBug> return - 1 ; <S2SV_StartBug> } <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { size_t <S2SV_ModEnd> maxcount ; const <S2SV_ModStart> -> si_count = CDF_TOLE4 <S2SV_ModEnd> ( si -> <S2SV_ModStart> = NULL ; if ( cdf_read_property_info ( sst , h , CDF_TOLE4 ( <S2SV_ModEnd> sd -> sd_offset <S2SV_ModStart> - 1 ) <S2SV_ModEnd> return - 1 <S2SV_ModStart> - 1 ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7586\n\n```\nCWE-119 static inline void header_put_byte ( SF_PRIVATE * psf , char x ) <S2SV_StartBug> { if ( psf -> headindex < SIGNED_SIZEOF ( psf -> header ) - 1 ) <S2SV_EndBug> <S2SV_StartBug> psf -> header [ psf -> headindex ++ ] = x ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x ) { <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . ptr [ <S2SV_ModEnd> psf -> header <S2SV_ModStart> psf -> header . indx <S2SV_ModEnd> ++ ] =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static char * cJSON_strdup ( const char * str ) { size_t len ; char * copy ; len = strlen ( str ) + 1 ; if ( ! ( copy = ( char * ) cJSON_malloc ( len ) ) ) return 0 ; memcpy ( copy , str , len ) ; return copy ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int calc_partial_ssl_err ( YV12_BUFFER_CONFIG * source , YV12_BUFFER_CONFIG * dest ) { int i , j ; int Total = 0 ; int srcoffset , dstoffset ; unsigned char * src = source -> y_buffer ; unsigned char * dst = dest -> y_buffer ; int linestocopy ; linestocopy = ( source -> y_height >> 4 ) / PARTIAL_FRAME_FRACTION ; linestocopy = linestocopy ? linestocopy << 4 : 16 ; srcoffset = source -> y_stride * ( ( dest -> y_height >> 5 ) * 16 ) ; dstoffset = dest -> y_stride * ( ( dest -> y_height >> 5 ) * 16 ) ; src += srcoffset ; dst += dstoffset ; for ( i = 0 ; i < linestocopy ; i += 16 ) { for ( j = 0 ; j < source -> y_width ; j += 16 ) { unsigned int sse ; <S2SV_StartBug> Total += vp8_mse16x16 ( src + j , source -> y_stride , <S2SV_EndBug> dst + j , dest -> y_stride , & sse ) ; } src += 16 * source -> y_stride ; dst += 16 * dest -> y_stride ; } return Total ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; Total += vpx_mse16x16 <S2SV_ModEnd> ( src +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 int nfs4_do_close ( struct path * path , struct nfs4_state * state , int wait ) { struct nfs_server * server = NFS_SERVER ( state -> inode ) ; struct nfs4_closedata * calldata ; struct nfs4_state_owner * sp = state -> owner ; struct rpc_task * task ; struct rpc_message msg = { . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_CLOSE ] , . rpc_cred = state -> owner -> so_cred , } ; struct rpc_task_setup task_setup_data = { . rpc_client = server -> client , . rpc_message = & msg , . callback_ops = & nfs4_close_ops , . workqueue = nfsiod_workqueue , . flags = RPC_TASK_ASYNC , } ; int status = - ENOMEM ; calldata = kmalloc ( sizeof ( * calldata ) , GFP_KERNEL ) ; if ( calldata == NULL ) goto out ; calldata -> inode = state -> inode ; calldata -> state = state ; calldata -> arg . fh = NFS_FH ( state -> inode ) ; calldata -> arg . stateid = & state -> open_stateid ; calldata -> arg . seqid = nfs_alloc_seqid ( & state -> owner -> so_seqid ) ; if ( calldata -> arg . seqid == NULL ) goto out_free_calldata ; <S2SV_StartBug> calldata -> arg . open_flags = 0 ; <S2SV_EndBug> calldata -> arg . bitmask = server -> attr_bitmask ; calldata -> res . fattr = & calldata -> fattr ; calldata -> res . seqid = calldata -> arg . seqid ; calldata -> res . server = server ; calldata -> path . mnt = mntget ( path -> mnt ) ; calldata -> path . dentry = dget ( path -> dentry ) ; msg . rpc_argp = & calldata -> arg , msg . rpc_resp = & calldata -> res , task_setup_data . callback_data = calldata ; task = rpc_run_task ( & task_setup_data ) ; if ( IS_ERR ( task ) ) return PTR_ERR ( task ) ; status = 0 ; if ( wait ) status = rpc_wait_for_completion_task ( task ) ; rpc_put_task ( task ) ; return status ; out_free_calldata : kfree ( calldata ) ; out : nfs4_put_open_state ( state ) ; nfs4_put_state_owner ( sp ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> arg . fmode <S2SV_ModEnd> = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8324\n\n```\nCWE-000 int flush_completed_IO ( struct inode * inode ) { <S2SV_StartBug> ext4_io_end_t * io ; <S2SV_EndBug> int ret = 0 ; int ret2 = 0 ; <S2SV_StartBug> if ( list_empty ( & EXT4_I ( inode ) -> i_completed_io_list ) ) <S2SV_EndBug> return ret ; dump_completed_IO ( inode ) ; <S2SV_StartBug> while ( ! list_empty ( & EXT4_I ( inode ) -> i_completed_io_list ) ) { <S2SV_EndBug> <S2SV_StartBug> io = list_entry ( EXT4_I ( inode ) -> i_completed_io_list . next , <S2SV_EndBug> ext4_io_end_t , list ) ; <S2SV_StartBug> ret = ext4_end_io_nolock ( io ) ; <S2SV_EndBug> if ( ret < 0 ) ret2 = ret ; else list_del_init ( & io -> list ) ; } <S2SV_StartBug> return ( ret2 < 0 ) ? ret2 : 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext4_io_end_t * io ; struct ext4_inode_info * ei = EXT4_I ( inode ) ; unsigned long flags <S2SV_ModStart> list_empty ( & ei <S2SV_ModEnd> -> i_completed_io_list ) <S2SV_ModStart> inode ) ; spin_lock_irqsave ( & ei -> i_completed_io_lock , flags ) ; <S2SV_ModStart> list_empty ( & ei <S2SV_ModEnd> -> i_completed_io_list ) <S2SV_ModStart> = list_entry ( ei <S2SV_ModEnd> -> i_completed_io_list . <S2SV_ModStart> list ) ; spin_unlock_irqrestore ( & ei -> i_completed_io_lock , flags ) ; <S2SV_ModStart> ext4_end_io_nolock ( io ) ; spin_lock_irqsave ( & ei -> i_completed_io_lock , flags <S2SV_ModStart> ) ; } spin_unlock_irqrestore ( & ei -> i_completed_io_lock , flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20169\n\n```\nCWE-400 int __usb_get_extra_descriptor ( char * buffer , unsigned size , <S2SV_StartBug> unsigned char type , void * * ptr ) <S2SV_EndBug> { struct usb_descriptor_header * header ; while ( size >= sizeof ( struct usb_descriptor_header ) ) { header = ( struct usb_descriptor_header * ) buffer ; <S2SV_StartBug> if ( header -> bLength < 2 ) { <S2SV_EndBug> printk ( KERN_ERR \"%s:<S2SV_blank>bogus<S2SV_blank>descriptor,<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>length<S2SV_blank>%d\\\\n\" , usbcore_name , header -> bDescriptorType , header -> bLength ) ; return - 1 ; } <S2SV_StartBug> if ( header -> bDescriptorType == type ) { <S2SV_EndBug> * ptr = header ; return 0 ; } buffer += header -> bLength ; size -= header -> bLength ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * * ptr , size_t minsize <S2SV_ModStart> bLength < 2 || header -> bLength > size <S2SV_ModStart> bDescriptorType == type && header -> bLength >= minsize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7648\n\n```\nCWE-119 int main ( int argc , char * argv [ ] ) { opj_dinfo_t * dinfo ; opj_event_mgr_t event_mgr ; int tnum ; unsigned int snum ; opj_mj2_t * movie ; mj2_tk_t * track ; mj2_sample_t * sample ; unsigned char * frame_codestream ; FILE * file , * outfile ; char outfilename [ 50 ] ; mj2_dparameters_t parameters ; if ( argc != 3 ) { printf ( \"Usage:<S2SV_blank>%s<S2SV_blank>mj2filename<S2SV_blank>output_location\\\\n\" , argv [ 0 ] ) ; printf ( \"Example:<S2SV_blank>%s<S2SV_blank>foreman.mj2<S2SV_blank>output/foreman\\\\n\" , argv [ 0 ] ) ; return 1 ; } file = fopen ( argv [ 1 ] , \"rb\" ) ; if ( ! file ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading\\\\n\" , argv [ 1 ] ) ; return 1 ; } memset ( & event_mgr , 0 , sizeof ( opj_event_mgr_t ) ) ; event_mgr . error_handler = error_callback ; event_mgr . warning_handler = warning_callback ; event_mgr . info_handler = info_callback ; dinfo = mj2_create_decompress ( ) ; opj_set_event_mgr ( ( opj_common_ptr ) dinfo , & event_mgr , stderr ) ; memset ( & parameters , 0 , sizeof ( mj2_dparameters_t ) ) ; movie = ( opj_mj2_t * ) dinfo -> mj2_handle ; mj2_setup_decoder ( movie , & parameters ) ; if ( mj2_read_struct ( file , movie ) ) { return 1 ; } tnum = 0 ; while ( movie -> tk [ tnum ] . track_type != 0 ) { tnum ++ ; } track = & movie -> tk [ tnum ] ; fprintf ( stdout , \"Extracting<S2SV_blank>%d<S2SV_blank>frames<S2SV_blank>from<S2SV_blank>file...\\\\n\" , track -> num_samples ) ; for ( snum = 0 ; snum < track -> num_samples ; snum ++ ) { sample = & track -> sample [ snum ] ; frame_codestream = ( unsigned char * ) malloc ( sample -> sample_size - 8 ) ; fseek ( file , sample -> offset + 8 , SEEK_SET ) ; fread ( frame_codestream , sample -> sample_size - 8 , 1 , file ) ; <S2SV_StartBug> sprintf ( outfilename , \"%s_%05d.j2k\" , argv [ 2 ] , snum ) ; <S2SV_EndBug> outfile = fopen ( outfilename , \"wb\" ) ; if ( ! outfile ) { <S2SV_StartBug> fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\\\\n\" , outfilename ) ; <S2SV_EndBug> return 1 ; } fwrite ( frame_codestream , sample -> sample_size - 8 , 1 , outfile ) ; fclose ( outfile ) ; free ( frame_codestream ) ; } fclose ( file ) ; fprintf ( stdout , \"%d<S2SV_blank>frames<S2SV_blank>correctly<S2SV_blank>extracted\\\\n\" , snum ) ; if ( dinfo ) { mj2_destroy_decompress ( ( opj_mj2_t * ) dinfo -> mj2_handle ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> file ) ; { int num = snprintf <S2SV_ModEnd> ( outfilename , <S2SV_ModStart> ( outfilename , sizeof ( outfilename ) , <S2SV_ModStart> 2 ] , snum ) ; if ( num >= sizeof ( outfilename ) ) { fprintf ( stderr , \"maximum<S2SV_blank>length<S2SV_blank>of<S2SV_blank>output<S2SV_blank>prefix<S2SV_blank>exceeded\\\\n\" ) ; free ( frame_codestream ) ; return 1 ; } } <S2SV_ModEnd> outfile = fopen <S2SV_ModStart> \"failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\\\\n\" , outfilename ) ; free ( frame_codestream\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10195\n\n```\nCWE-125 static int name_parse ( u8 * packet , int length , int * idx , char * name_out , int name_out_len ) { int name_end = - 1 ; int j = * idx ; int ptr_count = 0 ; # define GET32 ( x ) do { if ( j + 4 > length ) goto err ; memcpy ( & t32_ , packet + j , 4 ) ; j += 4 ; x = ntohl ( t32_ ) ; } while ( 0 ) # define GET16 ( x ) do { if ( j + 2 > length ) goto err ; memcpy ( & t_ , packet + j , 2 ) ; j += 2 ; x = ntohs ( t_ ) ; } while ( 0 ) # define GET8 ( x ) do { if ( j >= length ) goto err ; x = packet [ j ++ ] ; } while ( 0 ) char * cp = name_out ; const char * const end = name_out + name_out_len ; for ( ; ; ) { u8 label_len ; <S2SV_StartBug> if ( j >= length ) return - 1 ; <S2SV_EndBug> GET8 ( label_len ) ; if ( ! label_len ) break ; if ( label_len & 0xc0 ) { u8 ptr_low ; GET8 ( ptr_low ) ; if ( name_end < 0 ) name_end = j ; j = ( ( ( int ) label_len & 0x3f ) << 8 ) + ptr_low ; if ( j < 0 || j >= length ) return - 1 ; if ( ++ ptr_count > length ) return - 1 ; continue ; } if ( label_len > 63 ) return - 1 ; if ( cp != name_out ) { if ( cp + 1 >= end ) return - 1 ; * cp ++ = '.' ; } if ( cp + label_len >= end ) return - 1 ; <S2SV_StartBug> memcpy ( cp , packet + j , label_len ) ; <S2SV_EndBug> cp += label_len ; j += label_len ; } if ( cp >= end ) return - 1 ; * cp = '\\\\0' ; if ( name_end < 0 ) * idx = j ; else * idx = name_end ; return 0 ; err : return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u8 label_len ; <S2SV_ModEnd> GET8 ( label_len <S2SV_ModStart> - 1 ; if ( j + label_len > length ) return - 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13010\n\n```\nCWE-125 void beep_print ( netdissect_options * ndo , const u_char * bp , u_int length ) { <S2SV_StartBug> if ( l_strnstart ( \"MSG\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>MSG\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"RPY<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>RPY\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"ERR<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>ERR\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"ANS<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>ANS\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"NUL<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>NUL\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"SEQ<S2SV_blank>\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>SEQ\" ) ) ; <S2SV_StartBug> else if ( l_strnstart ( \"END\" , 4 , ( const char * ) bp , length ) ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>END\" ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>BEEP<S2SV_blank>(payload<S2SV_blank>or<S2SV_blank>undecoded)\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo , <S2SV_ModStart> ( l_strnstart ( ndo ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14040\n\n```\nCWE-787 opj_image_t * tgatoimage ( const char * filename , opj_cparameters_t * parameters ) { FILE * f ; opj_image_t * image ; unsigned int image_width , image_height , pixel_bit_depth ; unsigned int x , y ; int flip_image = 0 ; opj_image_cmptparm_t cmptparm [ 4 ] ; int numcomps ; OPJ_COLOR_SPACE color_space ; OPJ_BOOL mono ; OPJ_BOOL save_alpha ; int subsampling_dx , subsampling_dy ; int i ; f = fopen ( filename , \"rb\" ) ; if ( ! f ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading<S2SV_blank>!!\\\\n\" , filename ) ; return 0 ; } if ( ! tga_readheader ( f , & pixel_bit_depth , & image_width , & image_height , & flip_image ) ) { fclose ( f ) ; return NULL ; } if ( ! ( ( pixel_bit_depth == 24 ) || ( pixel_bit_depth == 32 ) ) ) { fclose ( f ) ; return NULL ; } memset ( & cmptparm [ 0 ] , 0 , 4 * sizeof ( opj_image_cmptparm_t ) ) ; mono = ( pixel_bit_depth == 8 ) || ( pixel_bit_depth == 16 ) ; save_alpha = ( pixel_bit_depth == 16 ) || ( pixel_bit_depth == 32 ) ; if ( mono ) { color_space = OPJ_CLRSPC_GRAY ; numcomps = save_alpha ? 2 : 1 ; } else { numcomps = save_alpha ? 4 : 3 ; color_space = OPJ_CLRSPC_SRGB ; } <S2SV_StartBug> subsampling_dx = parameters -> subsampling_dx ; <S2SV_EndBug> subsampling_dy = parameters -> subsampling_dy ; for ( i = 0 ; i < numcomps ; i ++ ) { cmptparm [ i ] . prec = 8 ; cmptparm [ i ] . bpp = 8 ; cmptparm [ i ] . sgnd = 0 ; cmptparm [ i ] . dx = ( OPJ_UINT32 ) subsampling_dx ; cmptparm [ i ] . dy = ( OPJ_UINT32 ) subsampling_dy ; cmptparm [ i ] . w = image_width ; cmptparm [ i ] . h = image_height ; } image = opj_image_create ( ( OPJ_UINT32 ) numcomps , & cmptparm [ 0 ] , color_space ) ; if ( ! image ) { fclose ( f ) ; return NULL ; } image -> x0 = ( OPJ_UINT32 ) parameters -> image_offset_x0 ; image -> y0 = ( OPJ_UINT32 ) parameters -> image_offset_y0 ; image -> x1 = ! image -> x0 ? ( OPJ_UINT32 ) ( image_width - 1 ) * ( OPJ_UINT32 ) subsampling_dx + 1 : image -> x0 + ( OPJ_UINT32 ) ( image_width - 1 ) * ( OPJ_UINT32 ) subsampling_dx + 1 ; image -> y1 = ! image -> y0 ? ( OPJ_UINT32 ) ( image_height - 1 ) * ( OPJ_UINT32 ) subsampling_dy + 1 : image -> y0 + ( OPJ_UINT32 ) ( image_height - 1 ) * ( OPJ_UINT32 ) subsampling_dy + 1 ; for ( y = 0 ; y < image_height ; y ++ ) { int index ; if ( flip_image ) { index = ( int ) ( ( image_height - y - 1 ) * image_width ) ; } else { index = ( int ) ( y * image_width ) ; } if ( numcomps == 3 ) { for ( x = 0 ; x < image_width ; x ++ ) { unsigned char r , g , b ; if ( ! fread ( & b , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & g , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & r , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } image -> comps [ 0 ] . data [ index ] = r ; image -> comps [ 1 ] . data [ index ] = g ; image -> comps [ 2 ] . data [ index ] = b ; index ++ ; } } else if ( numcomps == 4 ) { for ( x = 0 ; x < image_width ; x ++ ) { unsigned char r , g , b , a ; if ( ! fread ( & b , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & g , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & r , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } if ( ! fread ( & a , 1 , 1 , f ) ) { fprintf ( stderr , \"\\\\nError:<S2SV_blank>fread<S2SV_blank>return<S2SV_blank>a<S2SV_blank>number<S2SV_blank>of<S2SV_blank>element<S2SV_blank>different<S2SV_blank>from<S2SV_blank>the<S2SV_blank>expected.\\\\n\" ) ; opj_image_destroy ( image ) ; fclose ( f ) ; return NULL ; } image -> comps [ 0 ] . data [ index ] = r ; image -> comps [ 1 ] . data [ index ] = g ; image -> comps [ 2 ] . data [ index ] = b ; image -> comps [ 3 ] . data [ index ] = a ; index ++ ; } } else { fprintf ( stderr , \"Currently<S2SV_blank>unsupported<S2SV_blank>bit<S2SV_blank>depth<S2SV_blank>:<S2SV_blank>%s\\\\n\" , filename ) ; } } fclose ( f ) ; return image ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> OPJ_CLRSPC_SRGB ; } if ( image_height != 0 && image_width > 10000000 / image_height / numcomps ) { char ch ; OPJ_UINT64 expected_file_size = ( OPJ_UINT64 ) image_width * image_height * numcomps ; long curpos = ftell ( f ) ; if ( expected_file_size > ( OPJ_UINT64 ) INT_MAX ) { expected_file_size = ( OPJ_UINT64 ) INT_MAX ; } fseek ( f , ( long ) expected_file_size - 1 , SEEK_SET ) ; if ( fread ( & ch , 1 , 1 , f ) != 1 ) { fclose ( f ) ; return NULL ; } fseek ( f , curpos , SEEK_SET ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2548\n\n```\nCWE-310 static int crypto_report_comp ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_comp rcomp ; <S2SV_StartBug> snprintf ( rcomp . type , CRYPTO_MAX_ALG_NAME , \"%s\" , \"compression\" ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_COMPRESS , sizeof ( struct crypto_report_comp ) , & rcomp ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_comp rcomp ; strncpy <S2SV_ModEnd> ( rcomp . <S2SV_ModStart> . type , \"compression\" , sizeof ( rcomp . type ) <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8071\n\n```\nCWE-404 static void cp2112_gpio_set ( struct gpio_chip * chip , unsigned offset , int value ) { struct cp2112_device * dev = gpiochip_get_data ( chip ) ; struct hid_device * hdev = dev -> hdev ; u8 * buf = dev -> in_out_buffer ; <S2SV_StartBug> unsigned long flags ; <S2SV_EndBug> int ret ; <S2SV_StartBug> spin_lock_irqsave ( & dev -> lock , flags ) ; <S2SV_EndBug> buf [ 0 ] = CP2112_GPIO_SET ; buf [ 1 ] = value ? 0xff : 0 ; buf [ 2 ] = 1 << offset ; ret = hid_hw_raw_request ( hdev , CP2112_GPIO_SET , buf , CP2112_GPIO_SET_LENGTH , HID_FEATURE_REPORT , HID_REQ_SET_REPORT ) ; if ( ret < 0 ) hid_err ( hdev , \"error<S2SV_blank>setting<S2SV_blank>GPIO<S2SV_blank>values:<S2SV_blank>%d\\\\n\" , ret ) ; <S2SV_StartBug> spin_unlock_irqrestore ( & dev -> lock , flags ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> in_out_buffer ; <S2SV_ModEnd> int ret ; <S2SV_ModStart> int ret ; mutex_lock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; buf <S2SV_ModStart> ret ) ; mutex_unlock <S2SV_ModEnd> ( & dev <S2SV_ModStart> dev -> lock <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int evaluate_inter_mode_rd ( int mdcounts [ 4 ] , RATE_DISTORTION * rd , int * disable_skip , VP8_COMP * cpi , MACROBLOCK * x ) { MB_PREDICTION_MODE this_mode = x -> e_mbd . mode_info_context -> mbmi . mode ; BLOCK * b = & x -> block [ 0 ] ; MACROBLOCKD * xd = & x -> e_mbd ; int distortion ; vp8_build_inter16x16_predictors_mby ( & x -> e_mbd , x -> e_mbd . predictor , 16 ) ; if ( cpi -> active_map_enabled && x -> active_ptr [ 0 ] == 0 ) { x -> skip = 1 ; } else if ( x -> encode_breakout ) { unsigned int sse ; unsigned int var ; unsigned int threshold = ( xd -> block [ 0 ] . dequant [ 1 ] * xd -> block [ 0 ] . dequant [ 1 ] >> 4 ) ; if ( threshold < x -> encode_breakout ) threshold = x -> encode_breakout ; <S2SV_StartBug> var = vp8_variance16x16 <S2SV_EndBug> ( * ( b -> base_src ) , b -> src_stride , x -> e_mbd . predictor , 16 , & sse ) ; if ( sse < threshold ) { unsigned int q2dc = xd -> block [ 24 ] . dequant [ 0 ] ; if ( ( sse - var < q2dc * q2dc >> 4 ) || ( sse / 2 > var && sse - var < 64 ) ) { unsigned int sse2 = VP8_UVSSE ( x ) ; if ( sse2 * 2 < threshold ) { x -> skip = 1 ; rd -> distortion2 = sse + sse2 ; rd -> rate2 = 500 ; rd -> rate_uv = 0 ; rd -> distortion_uv = sse2 ; * disable_skip = 1 ; return RDCOST ( x -> rdmult , x -> rddiv , rd -> rate2 , rd -> distortion2 ) ; } } } } rd -> rate2 += vp8_cost_mv_ref ( this_mode , mdcounts ) ; macro_block_yrd ( x , & rd -> rate_y , & distortion ) ; rd -> rate2 += rd -> rate_y ; rd -> distortion2 += distortion ; rd_inter16x16_uv ( cpi , x , & rd -> rate_uv , & rd -> distortion_uv , cpi -> common . full_pixel ) ; rd -> rate2 += rd -> rate_uv ; rd -> distortion2 += rd -> distortion_uv ; return INT_MAX ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; var = vpx_variance16x16 <S2SV_ModEnd> ( * (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20456\n\n```\nCWE-125 static int parseOperand ( RAsm * a , const char * str , Operand * op , bool isrepop ) { size_t pos , nextpos = 0 ; x86newTokenType last_type ; int size_token = 1 ; bool explicit_size = false ; int reg_index = 0 ; op -> type = 0 ; while ( size_token ) { pos = nextpos ; last_type = getToken ( str , & pos , & nextpos ) ; if ( ! r_str_ncasecmp ( str + pos , \"ptr\" , 3 ) ) { continue ; } else if ( ! r_str_ncasecmp ( str + pos , \"byte\" , 4 ) ) { op -> type |= OT_MEMORY | OT_BYTE ; op -> dest_size = OT_BYTE ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"word\" , 4 ) ) { op -> type |= OT_MEMORY | OT_WORD ; op -> dest_size = OT_WORD ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"dword\" , 5 ) ) { op -> type |= OT_MEMORY | OT_DWORD ; op -> dest_size = OT_DWORD ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"qword\" , 5 ) ) { op -> type |= OT_MEMORY | OT_QWORD ; op -> dest_size = OT_QWORD ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"oword\" , 5 ) ) { op -> type |= OT_MEMORY | OT_OWORD ; op -> dest_size = OT_OWORD ; explicit_size = true ; } else if ( ! r_str_ncasecmp ( str + pos , \"tbyte\" , 5 ) ) { op -> type |= OT_MEMORY | OT_TBYTE ; op -> dest_size = OT_TBYTE ; explicit_size = true ; } else { size_token = 0 ; } } if ( str [ pos ] == '[' ) { if ( ! op -> type ) { op -> type = OT_MEMORY ; } op -> offset = op -> scale [ 0 ] = op -> scale [ 1 ] = 0 ; ut64 temp = 1 ; Register reg = X86R_UNDEFINED ; bool first_reg = true ; while ( str [ pos ] != ']' ) { if ( pos > nextpos ) { break ; } pos = nextpos ; if ( ! str [ pos ] ) { break ; } last_type = getToken ( str , & pos , & nextpos ) ; if ( last_type == TT_SPECIAL ) { if ( str [ pos ] == '+' || str [ pos ] == '-' || str [ pos ] == ']' ) { if ( reg != X86R_UNDEFINED ) { <S2SV_StartBug> op -> regs [ reg_index ] = reg ; <S2SV_EndBug> op -> scale [ reg_index ] = temp ; <S2SV_StartBug> ++ reg_index ; <S2SV_EndBug> } else { <S2SV_StartBug> op -> offset += temp ; <S2SV_EndBug> <S2SV_StartBug> op -> regs [ reg_index ] = X86R_UNDEFINED ; <S2SV_EndBug> } temp = 1 ; reg = X86R_UNDEFINED ; } else if ( str [ pos ] == '*' ) { } } else if ( last_type == TT_WORD ) { ut32 reg_type = 0 ; if ( reg != X86R_UNDEFINED ) { op -> type = 0 ; } nextpos = pos ; reg = parseReg ( a , str , & nextpos , & reg_type ) ; if ( first_reg ) { op -> extended = false ; if ( reg > 8 ) { op -> extended = true ; op -> reg = reg - 9 ; } first_reg = false ; } else if ( reg > 8 ) { op -> reg = reg - 9 ; } if ( reg_type & OT_REGTYPE & OT_SEGMENTREG ) { op -> reg = reg ; op -> type = reg_type ; parse_segment_offset ( a , str , & nextpos , op , reg_index ) ; return nextpos ; } if ( ! explicit_size ) { op -> type |= reg_type ; } op -> reg_size = reg_type ; op -> explicit_size = explicit_size ; if ( ! ( reg_type & OT_GPREG ) ) { op -> type = 0 ; } } else { char * p = strchr ( str , '+' ) ; op -> offset_sign = 1 ; if ( ! p ) { p = strchr ( str , '-' ) ; if ( p ) { op -> offset_sign = - 1 ; } } char * plus = strchr ( str , '+' ) ; char * minus = strchr ( str , '-' ) ; char * closeB = strchr ( str , ']' ) ; if ( plus && minus && plus < closeB && minus < closeB ) { op -> offset_sign = - 1 ; } char * tmp ; tmp = malloc ( strlen ( str + pos ) + 1 ) ; strcpy ( tmp , str + pos ) ; strtok ( tmp , \"+-\" ) ; st64 read = getnum ( a , tmp ) ; free ( tmp ) ; temp *= read ; } } } else if ( last_type == TT_WORD ) { nextpos = pos ; RFlagItem * flag ; if ( isrepop ) { op -> is_good_flag = false ; strncpy ( op -> rep_op , str , MAX_REPOP_LENGTH - 1 ) ; op -> rep_op [ MAX_REPOP_LENGTH - 1 ] = '\\\\0' ; return nextpos ; } op -> reg = parseReg ( a , str , & nextpos , & op -> type ) ; op -> extended = false ; if ( op -> reg > 8 ) { op -> extended = true ; op -> reg -= 9 ; } if ( op -> type & OT_REGTYPE & OT_SEGMENTREG ) { parse_segment_offset ( a , str , & nextpos , op , reg_index ) ; return nextpos ; } if ( op -> reg == X86R_UNDEFINED ) { op -> is_good_flag = false ; if ( a -> num && a -> num -> value == 0 ) { return nextpos ; } op -> type = OT_CONSTANT ; RCore * core = a -> num ? ( RCore * ) ( a -> num -> userptr ) : NULL ; if ( core && ( flag = r_flag_get ( core -> flags , str ) ) ) { op -> is_good_flag = true ; } char * p = strchr ( str , '-' ) ; if ( p ) { op -> sign = - 1 ; str = ++ p ; } op -> immediate = getnum ( a , str ) ; } else if ( op -> reg < X86R_UNDEFINED ) { strncpy ( op -> rep_op , str , MAX_REPOP_LENGTH - 1 ) ; op -> rep_op [ MAX_REPOP_LENGTH - 1 ] = '\\\\0' ; } } else { op -> type = OT_CONSTANT ; op -> sign = 1 ; char * p = strchr ( str , '-' ) ; if ( p ) { op -> sign = - 1 ; str = ++ p ; } op -> immediate = getnum ( a , str ) ; } return nextpos ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> X86R_UNDEFINED ) { if ( reg_index < 2 ) { <S2SV_ModStart> = temp ; } <S2SV_ModStart> += temp ; if ( reg_index < 2 ) { <S2SV_ModStart> = X86R_UNDEFINED ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12135\n\n```\nCWE-190 <S2SV_StartBug> int mongo_env_read_socket ( mongo * conn , void * buf , int len ) { <S2SV_EndBug> char * cbuf = buf ; while ( len ) { <S2SV_StartBug> int sent = recv ( conn -> sock , cbuf , len , 0 ) ; <S2SV_EndBug> if ( sent == 0 || sent == - 1 ) { __mongo_set_error ( conn , MONGO_IO_ERROR , strerror ( errno ) , errno ) ; return MONGO_ERROR ; } cbuf += sent ; len -= sent ; } return MONGO_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * buf , size_t <S2SV_ModEnd> len ) { <S2SV_ModStart> len ) { size_t <S2SV_ModEnd> sent = recv\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3817\n\n```\nCWE-416 void comps_mrtree_unite ( COMPS_MRTree * rt1 , COMPS_MRTree * rt2 ) { COMPS_HSList * tmplist , * tmp_subnodes ; COMPS_HSListItem * it , * it2 ; struct Pair { COMPS_HSList * subnodes ; char * key ; <S2SV_StartBug> char added ; <S2SV_EndBug> } * pair , * parent_pair ; pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = rt2 -> subnodes ; pair -> key = NULL ; tmplist = comps_hslist_create ( ) ; comps_hslist_init ( tmplist , NULL , NULL , & free ) ; comps_hslist_append ( tmplist , pair , 0 ) ; while ( tmplist -> first != NULL ) { it = tmplist -> first ; comps_hslist_remove ( tmplist , tmplist -> first ) ; tmp_subnodes = ( ( struct Pair * ) it -> data ) -> subnodes ; parent_pair = ( struct Pair * ) it -> data ; free ( it ) ; <S2SV_StartBug> pair -> added = 0 ; <S2SV_EndBug> for ( it = tmp_subnodes -> first ; it != NULL ; it = it -> next ) { pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = ( ( COMPS_MRTreeData * ) it -> data ) -> subnodes ; if ( parent_pair -> key != NULL ) { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_MRTreeData * ) it -> data ) -> key ) + strlen ( parent_pair -> key ) + 1 ) ) ; memcpy ( pair -> key , parent_pair -> key , sizeof ( char ) * strlen ( parent_pair -> key ) ) ; memcpy ( pair -> key + strlen ( parent_pair -> key ) , ( ( COMPS_MRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_MRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } else { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_MRTreeData * ) it -> data ) -> key ) + 1 ) ) ; memcpy ( pair -> key , ( ( COMPS_MRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_MRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } if ( ( ( COMPS_MRTreeData * ) it -> data ) -> data -> first != NULL ) { for ( it2 = ( ( COMPS_MRTreeData * ) it -> data ) -> data -> first ; it2 != NULL ; it2 = it2 -> next ) { comps_mrtree_set ( rt1 , pair -> key , it2 -> data ) ; } if ( ( ( COMPS_MRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } else { if ( ( ( COMPS_MRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } } free ( parent_pair -> key ) ; free ( parent_pair ) ; } comps_hslist_destroy ( & tmplist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * key ; <S2SV_ModEnd> } * pair <S2SV_ModStart> it ) ; <S2SV_ModEnd> for ( it\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_cyclic_refresh_free ( CYCLIC_REFRESH * cr ) { vpx_free ( cr -> map ) ; <S2SV_StartBug> vpx_free ( cr ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vpx_free ( cr -> last_coded_q_map ) ; vpx_free ( cr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7485\n\n```\nCWE-119 SQLWCHAR * _single_string_alloc_and_expand ( LPCSTR in ) { SQLWCHAR * chr ; int len = 0 ; if ( ! in ) { <S2SV_StartBug> return in ; <S2SV_EndBug> } while ( in [ len ] != 0 ) { len ++ ; } chr = malloc ( sizeof ( SQLWCHAR ) * ( len + 1 ) ) ; len = 0 ; while ( in [ len ] != 0 ) { chr [ len ] = in [ len ] ; len ++ ; } chr [ len ++ ] = 0 ; return chr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return NULL <S2SV_ModEnd> ; } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7915\n\n```\nCWE-125 static void hid_input_field ( struct hid_device * hid , struct hid_field * field , __u8 * data , int interrupt ) { unsigned n ; unsigned count = field -> report_count ; unsigned offset = field -> report_offset ; unsigned size = field -> report_size ; __s32 min = field -> logical_minimum ; __s32 max = field -> logical_maximum ; __s32 * value ; value = kmalloc ( sizeof ( __s32 ) * count , GFP_ATOMIC ) ; if ( ! value ) return ; for ( n = 0 ; n < count ; n ++ ) { value [ n ] = min < 0 ? snto32 ( hid_field_extract ( hid , data , offset + n * size , size ) , size ) : hid_field_extract ( hid , data , offset + n * size , size ) ; if ( ! ( field -> flags & HID_MAIN_ITEM_VARIABLE ) && <S2SV_StartBug> value [ n ] >= min && value [ n ] <= max && <S2SV_EndBug> field -> usage [ value [ n ] - min ] . hid == HID_UP_KEYBOARD + 1 ) goto exit ; } for ( n = 0 ; n < count ; n ++ ) { if ( HID_MAIN_ITEM_VARIABLE & field -> flags ) { hid_process_event ( hid , field , & field -> usage [ n ] , value [ n ] , interrupt ) ; continue ; } if ( field -> value [ n ] >= min && field -> value [ n ] <= max <S2SV_StartBug> && field -> usage [ field -> value [ n ] - min ] . hid <S2SV_EndBug> && search ( value , field -> value [ n ] , count ) ) hid_process_event ( hid , field , & field -> usage [ field -> value [ n ] - min ] , 0 , interrupt ) ; if ( value [ n ] >= min && value [ n ] <= max <S2SV_StartBug> && field -> usage [ value [ n ] - min ] . hid <S2SV_EndBug> && search ( field -> value , value [ n ] , count ) ) hid_process_event ( hid , field , & field -> usage [ value [ n ] - min ] , 1 , interrupt ) ; } memcpy ( field -> value , value , count * sizeof ( __s32 ) ) ; exit : kfree ( value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] <= max && value [ n ] - min < field -> maxusage <S2SV_ModStart> && field -> value [ n ] - min < field -> maxusage && field -> <S2SV_ModStart> <= max && value [ n ] - min < field -> maxusage &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18174\n\n```\nCWE-415 static int amd_gpio_probe ( struct platform_device * pdev ) { int ret = 0 ; int irq_base ; struct resource * res ; struct amd_gpio * gpio_dev ; gpio_dev = devm_kzalloc ( & pdev -> dev , sizeof ( struct amd_gpio ) , GFP_KERNEL ) ; if ( ! gpio_dev ) return - ENOMEM ; spin_lock_init ( & gpio_dev -> lock ) ; res = platform_get_resource ( pdev , IORESOURCE_MEM , 0 ) ; if ( ! res ) { dev_err ( & pdev -> dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>gpio<S2SV_blank>io<S2SV_blank>resource.\\\\n\" ) ; return - EINVAL ; } gpio_dev -> base = devm_ioremap_nocache ( & pdev -> dev , res -> start , resource_size ( res ) ) ; if ( ! gpio_dev -> base ) return - ENOMEM ; irq_base = platform_get_irq ( pdev , 0 ) ; if ( irq_base < 0 ) { dev_err ( & pdev -> dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>gpio<S2SV_blank>IRQ.\\\\n\" ) ; return - EINVAL ; } gpio_dev -> pdev = pdev ; gpio_dev -> gc . direction_input = amd_gpio_direction_input ; gpio_dev -> gc . direction_output = amd_gpio_direction_output ; gpio_dev -> gc . get = amd_gpio_get_value ; gpio_dev -> gc . set = amd_gpio_set_value ; gpio_dev -> gc . set_debounce = amd_gpio_set_debounce ; gpio_dev -> gc . dbg_show = amd_gpio_dbg_show ; gpio_dev -> gc . base = 0 ; gpio_dev -> gc . label = pdev -> name ; gpio_dev -> gc . owner = THIS_MODULE ; gpio_dev -> gc . parent = & pdev -> dev ; gpio_dev -> gc . ngpio = TOTAL_NUMBER_OF_PINS ; # if defined ( CONFIG_OF_GPIO ) gpio_dev -> gc . of_node = pdev -> dev . of_node ; # endif gpio_dev -> groups = kerncz_groups ; gpio_dev -> ngroups = ARRAY_SIZE ( kerncz_groups ) ; amd_pinctrl_desc . name = dev_name ( & pdev -> dev ) ; <S2SV_StartBug> gpio_dev -> pctrl = pinctrl_register ( & amd_pinctrl_desc , <S2SV_EndBug> <S2SV_StartBug> & pdev -> dev , gpio_dev ) ; <S2SV_EndBug> if ( IS_ERR ( gpio_dev -> pctrl ) ) { dev_err ( & pdev -> dev , \"Couldn\\'t<S2SV_blank>register<S2SV_blank>pinctrl<S2SV_blank>driver\\\\n\" ) ; return PTR_ERR ( gpio_dev -> pctrl ) ; } ret = gpiochip_add_data ( & gpio_dev -> gc , gpio_dev ) ; if ( ret ) <S2SV_StartBug> goto out1 ; <S2SV_EndBug> ret = gpiochip_add_pin_range ( & gpio_dev -> gc , dev_name ( & pdev -> dev ) , 0 , 0 , TOTAL_NUMBER_OF_PINS ) ; if ( ret ) { dev_err ( & pdev -> dev , \"Failed<S2SV_blank>to<S2SV_blank>add<S2SV_blank>pin<S2SV_blank>range\\\\n\" ) ; goto out2 ; } ret = gpiochip_irqchip_add ( & gpio_dev -> gc , & amd_gpio_irqchip , 0 , handle_simple_irq , IRQ_TYPE_NONE ) ; if ( ret ) { dev_err ( & pdev -> dev , \"could<S2SV_blank>not<S2SV_blank>add<S2SV_blank>irqchip\\\\n\" ) ; ret = - ENODEV ; goto out2 ; } gpiochip_set_chained_irqchip ( & gpio_dev -> gc , & amd_gpio_irqchip , irq_base , amd_gpio_irq_handler ) ; platform_set_drvdata ( pdev , gpio_dev ) ; dev_dbg ( & pdev -> dev , \"amd<S2SV_blank>gpio<S2SV_blank>driver<S2SV_blank>loaded\\\\n\" ) ; return ret ; out2 : gpiochip_remove ( & gpio_dev -> gc ) ; <S2SV_StartBug> out1 : <S2SV_EndBug> pinctrl_unregister ( gpio_dev -> pctrl ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pctrl = devm_pinctrl_register ( & pdev -> dev , <S2SV_ModEnd> & amd_pinctrl_desc , <S2SV_ModStart> & amd_pinctrl_desc , <S2SV_ModEnd> gpio_dev ) ; <S2SV_ModStart> ( ret ) return ret <S2SV_ModEnd> ; ret = <S2SV_ModStart> gc ) ; <S2SV_ModEnd> return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-0429\n\n```\nCWE-119 void read_sequence_header ( decoder_info_t * decoder_info , stream_t * stream ) { decoder_info -> width = get_flc ( 16 , stream ) ; decoder_info -> height = get_flc ( 16 , stream ) ; <S2SV_StartBug> decoder_info -> log2_sb_size = get_flc ( 3 , stream ) ; <S2SV_EndBug> decoder_info -> pb_split = get_flc ( 1 , stream ) ; decoder_info -> tb_split_enable = get_flc ( 1 , stream ) ; decoder_info -> max_num_ref = get_flc ( 2 , stream ) + 1 ; decoder_info -> interp_ref = get_flc ( 2 , stream ) ; decoder_info -> max_delta_qp = get_flc ( 1 , stream ) ; decoder_info -> deblocking = get_flc ( 1 , stream ) ; decoder_info -> clpf = get_flc ( 1 , stream ) ; decoder_info -> use_block_contexts = get_flc ( 1 , stream ) ; decoder_info -> bipred = get_flc ( 2 , stream ) ; decoder_info -> qmtx = get_flc ( 1 , stream ) ; if ( decoder_info -> qmtx ) { decoder_info -> qmtx_offset = get_flc ( 6 , stream ) - 32 ; } decoder_info -> subsample = get_flc ( 2 , stream ) ; decoder_info -> subsample = ( decoder_info -> subsample & 1 ) * 20 + ( decoder_info -> subsample & 2 ) * 22 + ( ( decoder_info -> subsample & 3 ) == 3 ) * 2 + 400 ; decoder_info -> num_reorder_pics = get_flc ( 4 , stream ) ; if ( decoder_info -> subsample != 400 ) { decoder_info -> cfl_intra = get_flc ( 1 , stream ) ; decoder_info -> cfl_inter = get_flc ( 1 , stream ) ; } decoder_info -> bitdepth = get_flc ( 1 , stream ) ? 10 : 8 ; if ( decoder_info -> bitdepth == 10 ) decoder_info -> bitdepth += 2 * get_flc ( 1 , stream ) ; decoder_info -> input_bitdepth = get_flc ( 1 , stream ) ? 10 : 8 ; if ( decoder_info -> input_bitdepth == 10 ) decoder_info -> input_bitdepth += 2 * get_flc ( 1 , stream ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 3 , stream ) ; decoder_info -> log2_sb_size = clip ( decoder_info -> log2_sb_size , log2i ( MIN_BLOCK_SIZE ) , log2i ( MAX_SB_SIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7526\n\n```\nCWE-787 static void InsertRow ( Image * image , unsigned char * p , ssize_t y , int bpp , ExceptionInfo * exception ) { int bit ; Quantum index ; register Quantum * q ; ssize_t x ; switch ( bpp ) { case 1 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( ( * p ) & ( 0x80 >> bit ) ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( ssize_t ) ( image -> columns % 8 ) ; bit ++ ) { index = ( ( * p ) & ( 0x80 >> bit ) ? 0x01 : 0x00 ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ! SyncAuthenticPixels ( image , exception ) ) break ; break ; } case 2 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; <S2SV_StartBug> for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) <S2SV_EndBug> { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 4 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 6 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; if ( ( image -> columns % 4 ) >= 1 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; if ( ( image -> columns % 4 ) >= 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 2 ) & 0x3 , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; } } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; break ; } case 4 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x0f , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; q += GetPixelChannels ( image ) ; index = ConstrainColormapIndex ( image , ( * p ) & 0x0f , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x0f , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; break ; } case 8 : { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { index = ConstrainColormapIndex ( image , * p , exception ) ; SetPixelIndex ( image , index , q ) ; SetPixelViaPixelInfo ( image , image -> colormap + ( ssize_t ) index , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } break ; case 24 : q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( ! SyncAuthenticPixels ( image , exception ) ) break ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; x += 4 <S2SV_ModEnd> ) { index\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2211\n\n```\nCWE-264 SYSCALL_DEFINE5 ( osf_getsysinfo , unsigned long , op , void __user * , buffer , unsigned long , nbytes , int __user * , start , void __user * , arg ) { unsigned long w ; struct percpu_struct * cpu ; switch ( op ) { case GSI_IEEE_FP_CONTROL : w = current_thread_info ( ) -> ieee_state & IEEE_SW_MASK ; w = swcr_update_status ( w , rdfpcr ( ) ) ; if ( put_user ( w , ( unsigned long __user * ) buffer ) ) return - EFAULT ; return 0 ; case GSI_IEEE_STATE_AT_SIGNAL : break ; case GSI_UACPROC : if ( nbytes < sizeof ( unsigned int ) ) return - EINVAL ; w = ( current_thread_info ( ) -> flags >> UAC_SHIFT ) & UAC_BITMASK ; if ( put_user ( w , ( unsigned int __user * ) buffer ) ) return - EFAULT ; return 1 ; case GSI_PROC_TYPE : if ( nbytes < sizeof ( unsigned long ) ) return - EINVAL ; cpu = ( struct percpu_struct * ) ( ( char * ) hwrpb + hwrpb -> processor_offset ) ; w = cpu -> type ; if ( put_user ( w , ( unsigned long __user * ) buffer ) ) return - EFAULT ; return 1 ; case GSI_GET_HWRPB : <S2SV_StartBug> if ( nbytes < sizeof ( * hwrpb ) ) <S2SV_EndBug> return - EINVAL ; if ( copy_to_user ( buffer , hwrpb , nbytes ) != 0 ) return - EFAULT ; return 1 ; default : break ; } return - EOPNOTSUPP ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( nbytes > <S2SV_ModEnd> sizeof ( *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static noinline void key_gc_unused_keys ( struct list_head * keys ) { while ( ! list_empty ( keys ) ) { struct key * key = list_entry ( keys -> next , struct key , graveyard_link ) ; <S2SV_StartBug> list_del ( & key -> graveyard_link ) ; <S2SV_EndBug> kdebug ( \"-<S2SV_blank>%u\" , key -> serial ) ; key_check ( key ) ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) && <S2SV_EndBug> ! test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) && key -> type -> destroy ) key -> type -> destroy ( key ) ; security_key_free ( key ) ; if ( test_bit ( KEY_FLAG_IN_QUOTA , & key -> flags ) ) { spin_lock ( & key -> user -> lock ) ; key -> user -> qnkeys -- ; key -> user -> qnbytes -= key -> quotalen ; spin_unlock ( & key -> user -> lock ) ; } atomic_dec ( & key -> user -> nkeys ) ; <S2SV_StartBug> if ( test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) <S2SV_EndBug> atomic_dec ( & key -> user -> nikeys ) ; key_user_put ( key -> user ) ; kfree ( key -> description ) ; memzero_explicit ( key , sizeof ( * key ) ) ; kmem_cache_free ( key_jar , key ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> graveyard_link ) ; short state = key -> state ; <S2SV_ModStart> ; if ( state == KEY_IS_POSITIVE && <S2SV_ModEnd> key -> type <S2SV_ModStart> ; if ( state != KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) atomic_dec (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19056\n\n```\nCWE-401 static int mwifiex_pcie_alloc_cmdrsp_buf ( struct mwifiex_adapter * adapter ) { struct pcie_service_card * card = adapter -> card ; struct sk_buff * skb ; skb = dev_alloc_skb ( MWIFIEX_UPLD_SIZE ) ; if ( ! skb ) { mwifiex_dbg ( adapter , ERROR , \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>skb<S2SV_blank>for<S2SV_blank>command<S2SV_blank>response<S2SV_blank>data.\\\\n\" ) ; return - ENOMEM ; } skb_put ( skb , MWIFIEX_UPLD_SIZE ) ; if ( mwifiex_map_pci_memory ( adapter , skb , MWIFIEX_UPLD_SIZE , <S2SV_StartBug> PCI_DMA_FROMDEVICE ) ) <S2SV_EndBug> <S2SV_StartBug> return - 1 ; <S2SV_EndBug> card -> cmdrsp_buf = skb ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PCI_DMA_FROMDEVICE ) ) { kfree_skb ( skb ) ; <S2SV_ModStart> - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 void pci_lintr_request ( struct pci_vdev * dev ) { struct businfo * bi ; struct slotinfo * si ; int bestpin , bestcount , pin ; bi = pci_businfo [ dev -> bus ] ; <S2SV_StartBug> assert ( bi != NULL ) ; <S2SV_EndBug> si = & bi -> slotinfo [ dev -> slot ] ; bestpin = 0 ; bestcount = si -> si_intpins [ 0 ] . ii_count ; for ( pin = 1 ; pin < 4 ; pin ++ ) { if ( si -> si_intpins [ pin ] . ii_count < bestcount ) { bestpin = pin ; bestcount = si -> si_intpins [ pin ] . ii_count ; } } si -> si_intpins [ bestpin ] . ii_count ++ ; dev -> lintr . pin = bestpin + 1 ; pci_set_cfgdata8 ( dev , PCIR_INTPIN , bestpin + 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bus ] ; if ( bi == NULL ) { pr_err ( \"%s:<S2SV_blank>pci<S2SV_blank>[%s]<S2SV_blank>has<S2SV_blank>wrong<S2SV_blank>bus<S2SV_blank>%d<S2SV_blank>info!\\\\n\" , __func__ , dev -> name , dev -> bus ) ; return ; } <S2SV_ModEnd> si = &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int setup_dev_console ( const struct lxc_rootfs * rootfs , const struct lxc_console * console ) { char path [ MAXPATHLEN ] ; struct stat s ; int ret ; ret = snprintf ( path , sizeof ( path ) , \"%s/dev/console\" , rootfs -> mount ) ; if ( ret >= sizeof ( path ) ) { ERROR ( \"console<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } if ( access ( path , F_OK ) ) { WARN ( \"rootfs<S2SV_blank>specified<S2SV_blank>but<S2SV_blank>no<S2SV_blank>console<S2SV_blank>found<S2SV_blank>at<S2SV_blank>\\'%s\\'\" , path ) ; return 0 ; } if ( console -> master < 0 ) { INFO ( \"no<S2SV_blank>console\" ) ; return 0 ; } if ( stat ( path , & s ) ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>stat<S2SV_blank>\\'%s\\'\" , path ) ; return - 1 ; } if ( chmod ( console -> name , s . st_mode ) ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>mode<S2SV_blank>\\'0%o\\'<S2SV_blank>to<S2SV_blank>\\'%s\\'\" , s . st_mode , console -> name ) ; return - 1 ; } <S2SV_StartBug> if ( mount ( console -> name , path , \"none\" , MS_BIND , 0 ) ) { <S2SV_EndBug> ERROR ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'\" , console -> name , path ) ; return - 1 ; } INFO ( \"console<S2SV_blank>has<S2SV_blank>been<S2SV_blank>setup\" ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( safe_mount ( console -> name , path , \"none\" , MS_BIND , 0 , rootfs -> mount <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9253\n\n```\nCWE-400 int fpm_stdio_init_child ( struct fpm_worker_pool_s * wp ) { # ifdef HAVE_SYSLOG_H if ( fpm_globals . error_log_fd == ZLOG_SYSLOG ) { closelog ( ) ; } else # endif if ( fpm_globals . error_log_fd > 0 ) { close ( fpm_globals . error_log_fd ) ; } fpm_globals . error_log_fd = - 1 ; zlog_set_fd ( - 1 ) ; <S2SV_StartBug> if ( wp -> listening_socket != STDIN_FILENO ) { <S2SV_EndBug> if ( 0 > dup2 ( wp -> listening_socket , STDIN_FILENO ) ) { zlog ( ZLOG_SYSERROR , \"failed<S2SV_blank>to<S2SV_blank>init<S2SV_blank>child<S2SV_blank>stdio:<S2SV_blank>dup2()\" ) ; return - 1 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-0500\n\n```\nCWE-119 CURLcode Curl_smtp_escape_eob ( struct connectdata * conn , const ssize_t nread ) { ssize_t i ; ssize_t si ; struct Curl_easy * data = conn -> data ; struct SMTP * smtp = data -> req . protop ; char * scratch = data -> state . scratch ; char * newscratch = NULL ; char * oldscratch = NULL ; size_t eob_sent ; if ( ! scratch || data -> set . crlf ) { oldscratch = scratch ; <S2SV_StartBug> scratch = newscratch = malloc ( 2 * data -> set . buffer_size ) ; <S2SV_EndBug> if ( ! newscratch ) { failf ( data , \"Failed<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>scratch<S2SV_blank>buffer!\" ) ; return CURLE_OUT_OF_MEMORY ; } <S2SV_StartBug> } <S2SV_EndBug> eob_sent = smtp -> eob ; for ( i = 0 , si = 0 ; i < nread ; i ++ ) { if ( SMTP_EOB [ smtp -> eob ] == data -> req . upload_fromhere [ i ] ) { smtp -> eob ++ ; if ( 2 == smtp -> eob || SMTP_EOB_LEN == smtp -> eob ) smtp -> trailing_crlf = TRUE ; else smtp -> trailing_crlf = FALSE ; } else if ( smtp -> eob ) { memcpy ( & scratch [ si ] , & SMTP_EOB [ eob_sent ] , smtp -> eob - eob_sent ) ; si += smtp -> eob - eob_sent ; if ( SMTP_EOB [ 0 ] == data -> req . upload_fromhere [ i ] ) smtp -> eob = 1 ; else smtp -> eob = 0 ; eob_sent = 0 ; smtp -> trailing_crlf = FALSE ; } if ( SMTP_EOB_FIND_LEN == smtp -> eob ) { memcpy ( & scratch [ si ] , & SMTP_EOB_REPL [ eob_sent ] , SMTP_EOB_REPL_LEN - eob_sent ) ; si += SMTP_EOB_REPL_LEN - eob_sent ; smtp -> eob = 0 ; eob_sent = 0 ; } else if ( ! smtp -> eob ) scratch [ si ++ ] = data -> req . upload_fromhere [ i ] ; } if ( smtp -> eob - eob_sent ) { memcpy ( & scratch [ si ] , & SMTP_EOB [ eob_sent ] , smtp -> eob - eob_sent ) ; si += smtp -> eob - eob_sent ; } if ( si != nread ) { data -> req . upload_fromhere = scratch ; data -> state . scratch = scratch ; free ( oldscratch ) ; data -> req . upload_present = si ; } else free ( newscratch ) ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 2 * UPLOAD_BUFSIZE <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; } } DEBUGASSERT ( UPLOAD_BUFSIZE >= nread ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void test_decode ( struct stream_state * stream , enum TestDecodeFatality fatal , const VpxInterface * codec ) { vpx_image_t enc_img , dec_img ; if ( stream -> mismatch_seen ) return ; if ( strcmp ( codec -> name , \"vp8\" ) == 0 ) { struct vpx_ref_frame ref_enc , ref_dec ; int width , height ; width = ( stream -> config . cfg . g_w + 15 ) & ~ 15 ; height = ( stream -> config . cfg . g_h + 15 ) & ~ 15 ; vpx_img_alloc ( & ref_enc . img , VPX_IMG_FMT_I420 , width , height , 1 ) ; enc_img = ref_enc . img ; vpx_img_alloc ( & ref_dec . img , VPX_IMG_FMT_I420 , width , height , 1 ) ; dec_img = ref_dec . img ; ref_enc . frame_type = VP8_LAST_FRAME ; ref_dec . frame_type = VP8_LAST_FRAME ; vpx_codec_control ( & stream -> encoder , VP8_COPY_REFERENCE , & ref_enc ) ; vpx_codec_control ( & stream -> decoder , VP8_COPY_REFERENCE , & ref_dec ) ; } else { <S2SV_StartBug> struct vp9_ref_frame ref ; <S2SV_EndBug> ref . idx = 0 ; <S2SV_StartBug> vpx_codec_control ( & stream -> encoder , VP9_GET_REFERENCE , & ref ) ; <S2SV_EndBug> enc_img = ref . img ; <S2SV_StartBug> vpx_codec_control ( & stream -> decoder , VP9_GET_REFERENCE , & ref ) ; <S2SV_EndBug> dec_img = ref . img ; } ctx_exit_on_error ( & stream -> encoder , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>encoder<S2SV_blank>reference<S2SV_blank>frame\" ) ; ctx_exit_on_error ( & stream -> decoder , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>decoder<S2SV_blank>reference<S2SV_blank>frame\" ) ; if ( ! compare_img ( & enc_img , & dec_img ) ) { int y [ 4 ] , u [ 4 ] , v [ 4 ] ; <S2SV_StartBug> find_mismatch ( & enc_img , & dec_img , y , u , v ) ; <S2SV_EndBug> stream -> decoder . err = 1 ; warn_or_exit_on_error ( & stream -> decoder , fatal == TEST_DECODE_FATAL , \"Stream<S2SV_blank>%d:<S2SV_blank>Encode/decode<S2SV_blank>mismatch<S2SV_blank>on<S2SV_blank>frame<S2SV_blank>%d<S2SV_blank>at\" \"<S2SV_blank>Y[%d,<S2SV_blank>%d]<S2SV_blank>{%d/%d},\" \"<S2SV_blank>U[%d,<S2SV_blank>%d]<S2SV_blank>{%d/%d},\" \"<S2SV_blank>V[%d,<S2SV_blank>%d]<S2SV_blank>{%d/%d}\" , stream -> index , stream -> frames_out , y [ 0 ] , y [ 1 ] , y [ 2 ] , y [ 3 ] , u [ 0 ] , u [ 1 ] , u [ 2 ] , u [ 3 ] , v [ 0 ] , v [ 1 ] , v [ 2 ] , v [ 3 ] ) ; stream -> mismatch_seen = stream -> frames_out ; } vpx_img_free ( & enc_img ) ; vpx_img_free ( & dec_img ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct vp9_ref_frame ref_enc , ref_dec ; ref_enc <S2SV_ModEnd> . idx = <S2SV_ModStart> = 0 ; ref_dec . idx = 0 ; <S2SV_ModStart> VP9_GET_REFERENCE , & ref_enc ) ; enc_img = ref_enc <S2SV_ModEnd> . img ; <S2SV_ModStart> VP9_GET_REFERENCE , & ref_dec ) ; dec_img = ref_dec . img ; # if CONFIG_VP9_HIGHBITDEPTH if ( ( enc_img . fmt & VPX_IMG_FMT_HIGHBITDEPTH ) != ( dec_img . fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ) { if ( enc_img . fmt & VPX_IMG_FMT_HIGHBITDEPTH ) { vpx_img_alloc ( & enc_img , enc_img . fmt - VPX_IMG_FMT_HIGHBITDEPTH , enc_img . d_w , enc_img . d_h , 16 ) ; vpx_img_truncate_16_to_8 ( & enc_img , & ref_enc . img ) ; } if ( dec_img . fmt & VPX_IMG_FMT_HIGHBITDEPTH ) { vpx_img_alloc ( & dec_img , dec_img . fmt - VPX_IMG_FMT_HIGHBITDEPTH , dec_img . d_w , dec_img . d_h , 16 ) ; vpx_img_truncate_16_to_8 ( & dec_img , & ref_dec . img ) ; } } # endif <S2SV_ModEnd> } ctx_exit_on_error ( <S2SV_ModStart> 4 ] ; # if CONFIG_VP9_HIGHBITDEPTH if ( enc_img . fmt & VPX_IMG_FMT_HIGHBITDEPTH ) { find_mismatch_high ( & enc_img , & dec_img , y , u , v ) ; } else { <S2SV_ModStart> v ) ; } # else find_mismatch ( & enc_img , & dec_img , y , u , v ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13300\n\n```\nCWE-119 <S2SV_StartBug> static MagickPixelPacket * * AcquirePixelThreadSet ( const Image * image ) <S2SV_EndBug> { MagickPixelPacket * * pixels ; register ssize_t i , j ; size_t <S2SV_StartBug> number_threads ; <S2SV_EndBug> number_threads = ( size_t ) GetMagickResourceLimit ( ThreadResource ) ; pixels = ( MagickPixelPacket * * ) AcquireQuantumMemory ( number_threads , sizeof ( * pixels ) ) ; if ( pixels == ( MagickPixelPacket * * ) NULL ) return ( ( MagickPixelPacket * * ) NULL ) ; ( void ) memset ( pixels , 0 , number_threads * sizeof ( * pixels ) ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) number_threads ; i ++ ) <S2SV_EndBug> { <S2SV_StartBug> pixels [ i ] = ( MagickPixelPacket * ) AcquireQuantumMemory ( image -> columns , <S2SV_EndBug> sizeof ( * * pixels ) ) ; if ( pixels [ i ] == ( MagickPixelPacket * ) NULL ) return ( DestroyPixelThreadSet ( pixels ) ) ; <S2SV_StartBug> for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) <S2SV_EndBug> <S2SV_StartBug> GetMagickPixelPacket ( image , & pixels [ i ] [ j ] ) ; <S2SV_EndBug> } return ( pixels ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> const Image * images ) { const Image * next ; <S2SV_ModEnd> MagickPixelPacket * * <S2SV_ModStart> j ; size_t columns , <S2SV_ModStart> ) ) ; columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; for ( <S2SV_ModEnd> i = 0 <S2SV_ModStart> ) AcquireQuantumMemory ( <S2SV_ModEnd> columns , sizeof <S2SV_ModStart> ( ssize_t ) <S2SV_ModEnd> columns ; j <S2SV_ModStart> ) GetMagickPixelPacket ( images <S2SV_ModEnd> , & pixels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> swabHorDiff16 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { uint16 * wp = ( uint16 * ) cp0 ; tmsize_t wc = cc / 2 ; <S2SV_StartBug> horDiff16 ( tif , cp0 , cc ) ; <S2SV_EndBug> TIFFSwabArrayOfShort ( wp , wc ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> swabHorDiff16 ( TIFF <S2SV_ModStart> / 2 ; if ( ! <S2SV_ModStart> , cc ) ) return 0 <S2SV_ModStart> wc ) ; return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2549\n\n```\nCWE-20 static int snd_hrtimer_stop ( struct snd_timer * t ) { struct snd_hrtimer * stime = t -> private_data ; atomic_set ( & stime -> running , 0 ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) ; hrtimer_try_to_cancel ( & stime -> hrt ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2182\n\n```\nCWE-119 static bool ldm_frag_add ( const u8 * data , int size , struct list_head * frags ) { struct frag * f ; struct list_head * item ; int rec , num , group ; BUG_ON ( ! data || ! frags ) ; if ( size < 2 * VBLK_SIZE_HEAD ) { ldm_error ( \"Value<S2SV_blank>of<S2SV_blank>size<S2SV_blank>is<S2SV_blank>to<S2SV_blank>small.\" ) ; return false ; } group = get_unaligned_be32 ( data + 0x08 ) ; rec = get_unaligned_be16 ( data + 0x0C ) ; num = get_unaligned_be16 ( data + 0x0E ) ; if ( ( num < 1 ) || ( num > 4 ) ) { ldm_error ( \"A<S2SV_blank>VBLK<S2SV_blank>claims<S2SV_blank>to<S2SV_blank>have<S2SV_blank>%d<S2SV_blank>parts.\" , num ) ; return false ; } if ( rec >= num ) { ldm_error ( \"REC<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>NUM<S2SV_blank>value<S2SV_blank>(%d)\" , rec , num ) ; return false ; } list_for_each ( item , frags ) { f = list_entry ( item , struct frag , list ) ; if ( f -> group == group ) goto found ; } f = kmalloc ( sizeof ( * f ) + size * num , GFP_KERNEL ) ; if ( ! f ) { ldm_crit ( \"Out<S2SV_blank>of<S2SV_blank>memory.\" ) ; return false ; } f -> group = group ; f -> num = num ; f -> rec = rec ; f -> map = 0xFF << num ; list_add_tail ( & f -> list , frags ) ; found : <S2SV_StartBug> if ( f -> map & ( 1 << rec ) ) { <S2SV_EndBug> ldm_error ( \"Duplicate<S2SV_blank>VBLK,<S2SV_blank>part<S2SV_blank>%d.\" , rec ) ; f -> map &= 0x7F ; return false ; } f -> map |= ( 1 << rec ) ; data += VBLK_SIZE_HEAD ; size -= VBLK_SIZE_HEAD ; memcpy ( f -> data + rec * ( size - VBLK_SIZE_HEAD ) + VBLK_SIZE_HEAD , data , size ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : if ( rec >= f -> num ) { ldm_error ( \"REC<S2SV_blank>value<S2SV_blank>(%d)<S2SV_blank>exceeds<S2SV_blank>NUM<S2SV_blank>value<S2SV_blank>(%d)\" , rec , f -> num ) ; return false ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void estimate_ref_frame_costs ( VP9_COMP * cpi , int segment_id , <S2SV_EndBug> unsigned int * ref_costs_single , unsigned int * ref_costs_comp , <S2SV_StartBug> vp9_prob * comp_mode_p ) { <S2SV_EndBug> <S2SV_StartBug> VP9_COMMON * const cm = & cpi -> common ; <S2SV_EndBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; int seg_ref_active = vp9_segfeature_active ( & cm -> seg , segment_id , SEG_LVL_REF_FRAME ) ; if ( seg_ref_active ) { vpx_memset ( ref_costs_single , 0 , MAX_REF_FRAMES * sizeof ( * ref_costs_single ) ) ; <S2SV_StartBug> vpx_memset ( ref_costs_comp , 0 , MAX_REF_FRAMES * sizeof ( * ref_costs_comp ) ) ; <S2SV_EndBug> * comp_mode_p = 128 ; } else { <S2SV_StartBug> vp9_prob intra_inter_p = vp9_get_intra_inter_prob ( cm , xd ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_prob comp_inter_p = 128 ; <S2SV_EndBug> if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) { comp_inter_p = vp9_get_reference_mode_prob ( cm , xd ) ; * comp_mode_p = comp_inter_p ; } else { * comp_mode_p = 128 ; } ref_costs_single [ INTRA_FRAME ] = vp9_cost_bit ( intra_inter_p , 0 ) ; if ( cm -> reference_mode != COMPOUND_REFERENCE ) { <S2SV_StartBug> vp9_prob ref_single_p1 = vp9_get_pred_prob_single_ref_p1 ( cm , xd ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_prob ref_single_p2 = vp9_get_pred_prob_single_ref_p2 ( cm , xd ) ; <S2SV_EndBug> unsigned int base_cost = vp9_cost_bit ( intra_inter_p , 1 ) ; if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) base_cost += vp9_cost_bit ( comp_inter_p , 0 ) ; ref_costs_single [ LAST_FRAME ] = ref_costs_single [ GOLDEN_FRAME ] = ref_costs_single [ ALTREF_FRAME ] = base_cost ; ref_costs_single [ LAST_FRAME ] += vp9_cost_bit ( ref_single_p1 , 0 ) ; ref_costs_single [ GOLDEN_FRAME ] += vp9_cost_bit ( ref_single_p1 , 1 ) ; ref_costs_single [ ALTREF_FRAME ] += vp9_cost_bit ( ref_single_p1 , 1 ) ; ref_costs_single [ GOLDEN_FRAME ] += vp9_cost_bit ( ref_single_p2 , 0 ) ; ref_costs_single [ ALTREF_FRAME ] += vp9_cost_bit ( ref_single_p2 , 1 ) ; } else { ref_costs_single [ LAST_FRAME ] = 512 ; ref_costs_single [ GOLDEN_FRAME ] = 512 ; ref_costs_single [ ALTREF_FRAME ] = 512 ; } if ( cm -> reference_mode != SINGLE_REFERENCE ) { <S2SV_StartBug> vp9_prob ref_comp_p = vp9_get_pred_prob_comp_ref_p ( cm , xd ) ; <S2SV_EndBug> unsigned int base_cost = vp9_cost_bit ( intra_inter_p , 1 ) ; if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) base_cost += vp9_cost_bit ( comp_inter_p , 1 ) ; ref_costs_comp [ LAST_FRAME ] = base_cost + vp9_cost_bit ( ref_comp_p , 0 ) ; ref_costs_comp [ GOLDEN_FRAME ] = base_cost + vp9_cost_bit ( ref_comp_p , 1 ) ; } else { ref_costs_comp [ LAST_FRAME ] = 512 ; ref_costs_comp [ GOLDEN_FRAME ] = 512 ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void estimate_ref_frame_costs ( const VP9_COMMON * cm , const MACROBLOCKD * xd , <S2SV_ModEnd> int segment_id , <S2SV_ModStart> * ref_costs_comp , vpx_prob <S2SV_ModEnd> * comp_mode_p ) <S2SV_ModStart> comp_mode_p ) { int seg_ref_active = segfeature_active ( & cm -> seg , segment_id , SEG_LVL_REF_FRAME ) ; if ( seg_ref_active ) { memset <S2SV_ModEnd> ( ref_costs_single , <S2SV_ModStart> ) ) ; memset <S2SV_ModEnd> ( ref_costs_comp , <S2SV_ModStart> } else { vpx_prob <S2SV_ModEnd> intra_inter_p = vp9_get_intra_inter_prob <S2SV_ModStart> xd ) ; vpx_prob <S2SV_ModEnd> comp_inter_p = 128 <S2SV_ModStart> COMPOUND_REFERENCE ) { vpx_prob <S2SV_ModEnd> ref_single_p1 = vp9_get_pred_prob_single_ref_p1 <S2SV_ModStart> xd ) ; vpx_prob <S2SV_ModEnd> ref_single_p2 = vp9_get_pred_prob_single_ref_p2 <S2SV_ModStart> SINGLE_REFERENCE ) { vpx_prob <S2SV_ModEnd> ref_comp_p = vp9_get_pred_prob_comp_ref_p\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int write_superframe_index ( vpx_codec_alg_priv_t * ctx ) { uint8_t marker = 0xc0 ; unsigned int mask ; int mag , index_sz ; assert ( ctx -> pending_frame_count ) ; assert ( ctx -> pending_frame_count <= 8 ) ; marker |= ctx -> pending_frame_count - 1 ; for ( mag = 0 , mask = 0xff ; mag < 4 ; mag ++ ) { if ( ctx -> pending_frame_magnitude < mask ) break ; mask <<= 8 ; mask |= 0xff ; } marker |= mag << 3 ; index_sz = 2 + ( mag + 1 ) * ctx -> pending_frame_count ; if ( ctx -> pending_cx_data_sz + index_sz < ctx -> cx_data_sz ) { uint8_t * x = ctx -> pending_cx_data + ctx -> pending_cx_data_sz ; <S2SV_StartBug> int i , j ; <S2SV_EndBug> * x ++ = marker ; for ( i = 0 ; i < ctx -> pending_frame_count ; i ++ ) { unsigned int this_sz = ( unsigned int ) ctx -> pending_frame_sizes [ i ] ; for ( j = 0 ; j <= mag ; j ++ ) { * x ++ = this_sz & 0xff ; this_sz >>= 8 ; } } * x ++ = marker ; ctx -> pending_cx_data_sz += index_sz ; <S2SV_StartBug> } <S2SV_EndBug> return index_sz ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , j ; # ifdef TEST_SUPPLEMENTAL_SUPERFRAME_DATA uint8_t marker_test = 0xc0 ; int mag_test = 2 ; int frames_test = 4 ; int index_sz_test = 2 + mag_test * frames_test ; marker_test |= frames_test - 1 ; marker_test |= ( mag_test - 1 ) << 3 ; * x ++ = marker_test ; for ( i = 0 ; i < mag_test * frames_test ; ++ i ) * x ++ = 0 ; * x ++ = marker_test ; ctx -> pending_cx_data_sz += index_sz_test ; printf ( \"Added<S2SV_blank>supplemental<S2SV_blank>superframe<S2SV_blank>data\\\\n\" ) ; # endif <S2SV_ModStart> += index_sz ; # ifdef TEST_SUPPLEMENTAL_SUPERFRAME_DATA index_sz += index_sz_test ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10192\n\n```\nCWE-119 static int http_receive_data ( HTTPContext * c ) { HTTPContext * c1 ; int len , loop_run = 0 ; while ( c -> chunked_encoding && ! c -> chunk_size && c -> buffer_end > c -> buffer_ptr ) { len = recv ( c -> fd , c -> buffer_ptr , 1 , 0 ) ; if ( len < 0 ) { if ( ff_neterrno ( ) != AVERROR ( EAGAIN ) && ff_neterrno ( ) != AVERROR ( EINTR ) ) goto fail ; return 0 ; } else if ( len == 0 ) { goto fail ; } else if ( c -> buffer_ptr - c -> buffer >= 2 && ! memcmp ( c -> buffer_ptr - 1 , \"\\\\r\\\\n\" , 2 ) ) { c -> chunk_size = strtol ( c -> buffer , 0 , 16 ) ; <S2SV_StartBug> if ( c -> chunk_size == 0 ) <S2SV_EndBug> goto fail ; c -> buffer_ptr = c -> buffer ; break ; } else if ( ++ loop_run > 10 ) goto fail ; else c -> buffer_ptr ++ ; } if ( c -> buffer_end > c -> buffer_ptr ) { len = recv ( c -> fd , c -> buffer_ptr , FFMIN ( c -> chunk_size , c -> buffer_end - c -> buffer_ptr ) , 0 ) ; if ( len < 0 ) { if ( ff_neterrno ( ) != AVERROR ( EAGAIN ) && ff_neterrno ( ) != AVERROR ( EINTR ) ) goto fail ; } else if ( len == 0 ) goto fail ; <S2SV_StartBug> else { <S2SV_EndBug> c -> chunk_size -= len ; c -> buffer_ptr += len ; c -> data_count += len ; update_datarate ( & c -> datarate , c -> data_count ) ; } } if ( c -> buffer_ptr - c -> buffer >= 2 && c -> data_count > FFM_PACKET_SIZE ) { if ( c -> buffer [ 0 ] != 'f' || c -> buffer [ 1 ] != 'm' ) { http_log ( \"Feed<S2SV_blank>stream<S2SV_blank>has<S2SV_blank>become<S2SV_blank>desynchronized<S2SV_blank>--<S2SV_blank>disconnecting\\\\n\" ) ; goto fail ; } } if ( c -> buffer_ptr >= c -> buffer_end ) { FFServerStream * feed = c -> stream ; if ( c -> data_count > FFM_PACKET_SIZE ) { if ( lseek ( c -> feed_fd , feed -> feed_write_index , SEEK_SET ) == - 1 ) http_log ( \"Seek<S2SV_blank>to<S2SV_blank>%\" PRId64 \"<S2SV_blank>failed\\\\n\" , feed -> feed_write_index ) ; if ( write ( c -> feed_fd , c -> buffer , FFM_PACKET_SIZE ) < 0 ) { http_log ( \"Error<S2SV_blank>writing<S2SV_blank>to<S2SV_blank>feed<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; goto fail ; } feed -> feed_write_index += FFM_PACKET_SIZE ; if ( feed -> feed_write_index > c -> stream -> feed_size ) feed -> feed_size = feed -> feed_write_index ; if ( c -> stream -> feed_max_size && feed -> feed_write_index >= c -> stream -> feed_max_size ) feed -> feed_write_index = FFM_PACKET_SIZE ; if ( ffm_write_write_index ( c -> feed_fd , feed -> feed_write_index ) < 0 ) { http_log ( \"Error<S2SV_blank>writing<S2SV_blank>index<S2SV_blank>to<S2SV_blank>feed<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; goto fail ; } for ( c1 = first_http_ctx ; c1 ; c1 = c1 -> next ) { if ( c1 -> state == HTTPSTATE_WAIT_FEED && c1 -> stream -> feed == c -> stream -> feed ) c1 -> state = HTTPSTATE_SEND_DATA ; } } else { AVFormatContext * s = avformat_alloc_context ( ) ; AVIOContext * pb ; AVInputFormat * fmt_in ; int i ; if ( ! s ) goto fail ; fmt_in = av_find_input_format ( feed -> fmt -> name ) ; if ( ! fmt_in ) goto fail ; pb = avio_alloc_context ( c -> buffer , c -> buffer_end - c -> buffer , 0 , NULL , NULL , NULL , NULL ) ; if ( ! pb ) goto fail ; pb -> seekable = 0 ; s -> pb = pb ; if ( avformat_open_input ( & s , c -> stream -> feed_filename , fmt_in , NULL ) < 0 ) { av_freep ( & pb ) ; goto fail ; } if ( s -> nb_streams != feed -> nb_streams ) { avformat_close_input ( & s ) ; av_freep ( & pb ) ; http_log ( \"Feed<S2SV_blank>\\'%s\\'<S2SV_blank>stream<S2SV_blank>number<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>registered<S2SV_blank>feed\\\\n\" , c -> stream -> feed_filename ) ; goto fail ; } for ( i = 0 ; i < s -> nb_streams ; i ++ ) { LayeredAVStream * fst = feed -> streams [ i ] ; AVStream * st = s -> streams [ i ] ; avcodec_parameters_to_context ( fst -> codec , st -> codecpar ) ; avcodec_parameters_from_context ( fst -> codecpar , fst -> codec ) ; } avformat_close_input ( & s ) ; av_freep ( & pb ) ; } c -> buffer_ptr = c -> buffer ; } return 0 ; fail : c -> stream -> feed_opened = 0 ; close ( c -> feed_fd ) ; for ( c1 = first_http_ctx ; c1 ; c1 = c1 -> next ) { if ( c1 -> state == HTTPSTATE_WAIT_FEED && c1 -> stream -> feed == c -> stream -> feed ) c1 -> state = HTTPSTATE_SEND_DATA_TRAILER ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c -> chunk_size <= 0 ) { c -> chunk_size = 0 ; goto fail ; } <S2SV_ModEnd> c -> buffer_ptr <S2SV_ModStart> ; else { av_assert0 ( len <= c -> chunk_size ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12898\n\n```\nCWE-125 static void interp_reply ( netdissect_options * ndo , const struct sunrpc_msg * rp , uint32_t proc , uint32_t vers , int length ) { register const uint32_t * dp ; register int v3 ; int er ; v3 = ( vers == NFS_VER3 ) ; if ( ! v3 && proc < NFS_NPROCS ) proc = nfsv3_procid [ proc ] ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( nfsproc_str , \"proc-%u\" , proc ) ) ) ; switch ( proc ) { case NFSPROC_GETATTR : dp = parserep ( ndo , rp , length ) ; if ( dp != NULL && parseattrstat ( ndo , dp , ! ndo -> ndo_qflag , v3 ) != 0 ) return ; break ; case NFSPROC_SETATTR : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) return ; if ( v3 ) { if ( parsewccres ( ndo , dp , ndo -> ndo_vflag ) ) return ; } else { if ( parseattrstat ( ndo , dp , ! ndo -> ndo_qflag , 0 ) != 0 ) return ; } break ; case NFSPROC_LOOKUP : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( ! ( dp = parsestatus ( ndo , dp , & er ) ) ) break ; if ( er ) { if ( ndo -> ndo_vflag > 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>post<S2SV_blank>dattr:\" ) ) ; dp = parse_post_op_attr ( ndo , dp , ndo -> ndo_vflag ) ; } } else { if ( ! ( dp = parsefh ( ndo , dp , v3 ) ) ) break ; if ( ( dp = parse_post_op_attr ( ndo , dp , ndo -> ndo_vflag ) ) && ndo -> ndo_vflag > 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>post<S2SV_blank>dattr:\" ) ) ; dp = parse_post_op_attr ( ndo , dp , ndo -> ndo_vflag ) ; } } if ( dp ) return ; } else { if ( parsediropres ( ndo , dp ) != 0 ) return ; } break ; case NFSPROC_ACCESS : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( ! ( dp = parsestatus ( ndo , dp , & er ) ) ) break ; if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \"<S2SV_blank>attr:\" ) ) ; if ( ! ( dp = parse_post_op_attr ( ndo , dp , ndo -> ndo_vflag ) ) ) break ; if ( ! er ) <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>c<S2SV_blank>%04x\" , EXTRACT_32BITS ( & dp [ 0 ] ) ) ) ; <S2SV_EndBug> return ; case NFSPROC_READLINK : dp = parserep ( ndo , rp , length ) ; if ( dp != NULL && parselinkres ( ndo , dp , v3 ) != 0 ) return ; break ; case NFSPROC_READ : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( ! ( dp = parsestatus ( ndo , dp , & er ) ) ) break ; if ( ! ( dp = parse_post_op_attr ( ndo , dp , ndo -> ndo_vflag ) ) ) break ; if ( er ) return ; if ( ndo -> ndo_vflag ) { ND_TCHECK ( dp [ 1 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>bytes\" , EXTRACT_32BITS ( & dp [ 0 ] ) ) ) ; if ( EXTRACT_32BITS ( & dp [ 1 ] ) ) ND_PRINT ( ( ndo , \"<S2SV_blank>EOF\" ) ) ; } return ; } else { if ( parseattrstat ( ndo , dp , ndo -> ndo_vflag , 0 ) != 0 ) return ; } break ; case NFSPROC_WRITE : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( ! ( dp = parsestatus ( ndo , dp , & er ) ) ) break ; if ( ! ( dp = parse_wcc_data ( ndo , dp , ndo -> ndo_vflag ) ) ) break ; if ( er ) return ; if ( ndo -> ndo_vflag ) { ND_TCHECK ( dp [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u<S2SV_blank>bytes\" , EXTRACT_32BITS ( & dp [ 0 ] ) ) ) ; if ( ndo -> ndo_vflag > 1 ) { ND_TCHECK ( dp [ 1 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank><%s>\" , tok2str ( nfsv3_writemodes , NULL , EXTRACT_32BITS ( & dp [ 1 ] ) ) ) ) ; } return ; } } else { if ( parseattrstat ( ndo , dp , ndo -> ndo_vflag , v3 ) != 0 ) return ; } break ; case NFSPROC_CREATE : case NFSPROC_MKDIR : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( parsecreateopres ( ndo , dp , ndo -> ndo_vflag ) != NULL ) return ; } else { if ( parsediropres ( ndo , dp ) != 0 ) return ; } break ; case NFSPROC_SYMLINK : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( parsecreateopres ( ndo , dp , ndo -> ndo_vflag ) != NULL ) return ; } else { if ( parsestatus ( ndo , dp , & er ) != NULL ) return ; } break ; case NFSPROC_MKNOD : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( parsecreateopres ( ndo , dp , ndo -> ndo_vflag ) != NULL ) return ; break ; case NFSPROC_REMOVE : case NFSPROC_RMDIR : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( parsewccres ( ndo , dp , ndo -> ndo_vflag ) ) return ; } else { if ( parsestatus ( ndo , dp , & er ) != NULL ) return ; } break ; case NFSPROC_RENAME : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( ! ( dp = parsestatus ( ndo , dp , & er ) ) ) break ; if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"<S2SV_blank>from:\" ) ) ; if ( ! ( dp = parse_wcc_data ( ndo , dp , ndo -> ndo_vflag ) ) ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>to:\" ) ) ; if ( ! ( dp = parse_wcc_data ( ndo , dp , ndo -> ndo_vflag ) ) ) break ; } return ; } else { if ( parsestatus ( ndo , dp , & er ) != NULL ) return ; } break ; case NFSPROC_LINK : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( ! ( dp = parsestatus ( ndo , dp , & er ) ) ) break ; if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"<S2SV_blank>file<S2SV_blank>POST:\" ) ) ; if ( ! ( dp = parse_post_op_attr ( ndo , dp , ndo -> ndo_vflag ) ) ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>dir:\" ) ) ; if ( ! ( dp = parse_wcc_data ( ndo , dp , ndo -> ndo_vflag ) ) ) break ; return ; } } else { if ( parsestatus ( ndo , dp , & er ) != NULL ) return ; } break ; case NFSPROC_READDIR : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( v3 ) { if ( parsev3rddirres ( ndo , dp , ndo -> ndo_vflag ) ) return ; } else { if ( parserddires ( ndo , dp ) != 0 ) return ; } break ; case NFSPROC_READDIRPLUS : if ( ! ( dp = parserep ( ndo , rp , length ) ) ) break ; if ( parsev3rddirres ( ndo , dp , ndo -> ndo_vflag ) ) return ; break ; case NFSPROC_FSSTAT : dp = parserep ( ndo , rp , length ) ; if ( dp != NULL && parsestatfs ( ndo , dp , v3 ) != 0 ) return ; break ; case NFSPROC_FSINFO : dp = parserep ( ndo , rp , length ) ; if ( dp != NULL && parsefsinfo ( ndo , dp ) != 0 ) return ; break ; case NFSPROC_PATHCONF : dp = parserep ( ndo , rp , length ) ; if ( dp != NULL && parsepathconf ( ndo , dp ) != 0 ) return ; break ; case NFSPROC_COMMIT : dp = parserep ( ndo , rp , length ) ; if ( dp != NULL && parsewccres ( ndo , dp , ndo -> ndo_vflag ) != 0 ) return ; break ; default : return ; } trunc : if ( ! nfserr ) ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! er ) { ND_TCHECK ( <S2SV_ModEnd> dp [ 0 <S2SV_ModStart> 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>c<S2SV_blank>%04x\" , EXTRACT_32BITS ( & dp [ 0 ] ) ) ) ; } <S2SV_ModEnd> return ; case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18193\n\n```\nCWE-119 bool f2fs_init_extent_tree ( struct inode * inode , struct f2fs_extent * i_ext ) { <S2SV_StartBug> struct f2fs_sb_info * sbi = F2FS_I_SB ( inode ) ; <S2SV_EndBug> struct extent_tree * et ; struct extent_node * en ; struct extent_info ei ; if ( ! f2fs_may_extent_tree ( inode ) ) { if ( i_ext && i_ext -> len ) { i_ext -> len = 0 ; return true ; } return false ; } et = __grab_extent_tree ( inode ) ; <S2SV_StartBug> if ( ! i_ext || ! i_ext -> len ) <S2SV_EndBug> return false ; get_extent_info ( & ei , i_ext ) ; write_lock ( & et -> lock ) ; if ( atomic_read ( & et -> node_cnt ) ) goto out ; en = __init_extent_tree ( sbi , et , & ei ) ; if ( en ) { spin_lock ( & sbi -> extent_lock ) ; list_add_tail ( & en -> list , & sbi -> extent_list ) ; spin_unlock ( & sbi -> extent_lock ) ; } out : write_unlock ( & et -> lock ) ; <S2SV_StartBug> return false ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i_ext ) { bool ret = __f2fs_init_extent_tree ( inode , i_ext <S2SV_ModEnd> ) ; if <S2SV_ModStart> if ( ! F2FS_I ( inode ) -> extent_tree ) set_inode_flag ( inode , FI_NO_EXTENT <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7175\n\n```\nCWE-399 static MagickBooleanType DecodeImage ( Image * image , unsigned char * luma , unsigned char * chroma1 , unsigned char * chroma2 , ExceptionInfo * exception ) { # define IsSync ( sum ) ( ( sum & 0xffffff00UL ) == 0xfffffe00UL ) <S2SV_StartBug> # define PCDGetBits ( n ) { sum = ( sum << n ) & 0xffffffff ; bits -= n ; while ( bits <= 24 ) { if ( p >= ( buffer + 0x800 ) ) { count = ReadBlob ( image , 0x800 , buffer ) ; p = buffer ; } sum |= ( ( unsigned int ) ( * p ) << ( 24 - bits ) ) ; bits += 8 ; p ++ ; } } <S2SV_EndBug> typedef struct PCDTable { unsigned int length , sequence ; MagickStatusType mask ; unsigned char key ; } PCDTable ; PCDTable * pcd_table [ 3 ] ; register ssize_t i , j ; register PCDTable * r ; register unsigned char * p , * q ; size_t bits , length , plane , pcd_length [ 3 ] , row , sum ; ssize_t count , quantum ; unsigned char * buffer ; assert ( image != ( const Image * ) NULL ) ; assert ( image -> signature == MagickCoreSignature ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image -> filename ) ; assert ( luma != ( unsigned char * ) NULL ) ; assert ( chroma1 != ( unsigned char * ) NULL ) ; assert ( chroma2 != ( unsigned char * ) NULL ) ; buffer = ( unsigned char * ) AcquireQuantumMemory ( 0x800 , sizeof ( * buffer ) ) ; if ( buffer == ( unsigned char * ) NULL ) ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , image -> filename ) ; sum = 0 ; bits = 32 ; p = buffer + 0x800 ; for ( i = 0 ; i < 3 ; i ++ ) { pcd_table [ i ] = ( PCDTable * ) NULL ; pcd_length [ i ] = 0 ; } for ( i = 0 ; i < ( image -> columns > 1536 ? 3 : 1 ) ; i ++ ) { PCDGetBits ( 8 ) ; length = ( sum & 0xff ) + 1 ; pcd_table [ i ] = ( PCDTable * ) AcquireQuantumMemory ( length , sizeof ( * pcd_table [ i ] ) ) ; if ( pcd_table [ i ] == ( PCDTable * ) NULL ) { buffer = ( unsigned char * ) RelinquishMagickMemory ( buffer ) ; <S2SV_StartBug> ThrowBinaryException ( ResourceLimitError , \"MemoryAllocationFailed\" , <S2SV_EndBug> image -> filename ) ; } r = pcd_table [ i ] ; for ( j = 0 ; j < ( ssize_t ) length ; j ++ ) { PCDGetBits ( 8 ) ; r -> length = ( unsigned int ) ( sum & 0xff ) + 1 ; if ( r -> length > 16 ) { <S2SV_StartBug> buffer = ( unsigned char * ) RelinquishMagickMemory ( buffer ) ; <S2SV_EndBug> return ( MagickFalse ) ; } PCDGetBits ( 16 ) ; r -> sequence = ( unsigned int ) ( sum & 0xffff ) << 16 ; PCDGetBits ( 8 ) ; r -> key = ( unsigned char ) ( sum & 0xff ) ; r -> mask = ( ~ ( ( 1U << ( 32 - r -> length ) ) - 1 ) ) ; r ++ ; } pcd_length [ i ] = ( size_t ) length ; } for ( i = 0 ; i < 1 ; i ++ ) PCDGetBits ( 16 ) ; for ( i = 0 ; i < 1 ; i ++ ) PCDGetBits ( 16 ) ; while ( ( sum & 0x00fff000UL ) != 0x00fff000UL ) PCDGetBits ( 8 ) ; while ( IsSync ( sum ) == 0 ) PCDGetBits ( 1 ) ; count = 0 ; length = 0 ; plane = 0 ; row = 0 ; q = luma ; for ( ; ; ) { if ( IsSync ( sum ) != 0 ) { PCDGetBits ( 16 ) ; row = ( ( sum >> 9 ) & 0x1fff ) ; if ( row == image -> rows ) break ; PCDGetBits ( 8 ) ; plane = sum >> 30 ; PCDGetBits ( 16 ) ; switch ( plane ) { case 0 : { q = luma + row * image -> columns ; count = ( ssize_t ) image -> columns ; break ; } case 2 : { q = chroma1 + ( row >> 1 ) * image -> columns ; count = ( ssize_t ) ( image -> columns >> 1 ) ; plane -- ; break ; } case 3 : { q = chroma2 + ( row >> 1 ) * image -> columns ; count = ( ssize_t ) ( image -> columns >> 1 ) ; plane -- ; break ; } default : { for ( i = 0 ; i < ( image -> columns > 1536 ? 3 : 1 ) ; i ++ ) pcd_table [ i ] = ( PCDTable * ) RelinquishMagickMemory ( pcd_table [ i ] ) ; buffer = ( unsigned char * ) RelinquishMagickMemory ( buffer ) ; ThrowBinaryException ( CorruptImageError , \"CorruptImage\" , image -> filename ) ; } } length = pcd_length [ plane ] ; continue ; } r = pcd_table [ plane ] ; for ( i = 0 ; ( ( i < ( ssize_t ) length ) && ( ( sum & r -> mask ) != r -> sequence ) ) ; i ++ ) r ++ ; if ( ( row > image -> rows ) || ( r == ( PCDTable * ) NULL ) ) { ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageWarning , \"SkipToSyncByte\" , \"`%s\\'\" , image -> filename ) ; while ( ( sum & 0x00fff000 ) != 0x00fff000 ) PCDGetBits ( 8 ) ; while ( IsSync ( sum ) == 0 ) PCDGetBits ( 1 ) ; continue ; } if ( r -> key < 128 ) quantum = ( ssize_t ) ( * q ) + r -> key ; else quantum = ( ssize_t ) ( * q ) + r -> key - 256 ; * q = ( unsigned char ) ( ( quantum < 0 ) ? 0 : ( quantum > 255 ) ? 255 : quantum ) ; q ++ ; PCDGetBits ( r -> length ) ; count -- ; } for ( i = 0 ; i < ( image -> columns > 1536 ? 3 : 1 ) ; i ++ ) pcd_table [ i ] = ( PCDTable * ) RelinquishMagickMemory ( pcd_table [ i ] ) ; buffer = ( unsigned char * ) RelinquishMagickMemory ( buffer ) ; return ( MagickTrue ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( n ) \\\\\\n{ <S2SV_ModEnd> sum = ( <S2SV_ModStart> ++ ; } \\\\\\n} <S2SV_ModEnd> typedef struct PCDTable <S2SV_ModStart> buffer ) ; for ( j = 0 ; j < i ; j ++ ) pcd_table [ j ] = ( PCDTable * ) RelinquishMagickMemory ( pcd_table [ j ] ) ; <S2SV_ModStart> RelinquishMagickMemory ( buffer ) ; for ( j = 0 ; j <= i ; j ++ ) pcd_table [ j ] = ( PCDTable * ) RelinquishMagickMemory ( pcd_table [ j ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void write_image_file ( const vpx_image_t * img , const int planes [ 3 ] , FILE * file ) { <S2SV_StartBug> int i , y ; <S2SV_EndBug> for ( i = 0 ; i < 3 ; ++ i ) { const int plane = planes [ i ] ; const unsigned char * buf = img -> planes [ plane ] ; const int stride = img -> stride [ plane ] ; const int w = vpx_img_plane_width ( img , plane ) ; const int h = vpx_img_plane_height ( img , plane ) ; for ( y = 0 ; y < h ; ++ y ) { <S2SV_StartBug> fwrite ( buf , 1 , w , file ) ; <S2SV_EndBug> buf += stride ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , y ; # if CONFIG_VP9_HIGHBITDEPTH const int bytes_per_sample = ( ( img -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) ? 2 : 1 ) ; # else const int bytes_per_sample = 1 ; # endif <S2SV_ModStart> ( buf , bytes_per_sample <S2SV_ModEnd> , w ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-358(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10229\n\n```\nCWE-358 int udp_recvmsg ( struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_in * , sin , msg -> msg_name ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; <S2SV_StartBug> int is_udplite = IS_UDPLITE ( sk ) ; <S2SV_EndBug> bool slow ; if ( flags & MSG_ERRQUEUE ) return ip_recv_error ( sk , msg , len , addr_len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { <S2SV_StartBug> if ( udp_lib_checksum_complete ( skb ) ) <S2SV_EndBug> goto csum_copy_err ; } <S2SV_StartBug> if ( skb_csum_unnecessary ( skb ) ) <S2SV_EndBug> err = skb_copy_datagram_msg ( skb , sizeof ( struct udphdr ) , msg , copied ) ; else { err = skb_copy_and_csum_datagram_msg ( skb , sizeof ( struct udphdr ) , msg ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udp_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_port = udp_hdr ( skb ) -> source ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; * addr_len = sizeof ( * sin ) ; } if ( inet -> cmsg_flags ) ip_cmsg_recv_offset ( msg , skb , sizeof ( struct udphdr ) ) ; err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } unlock_sock_fast ( sk , slow ) ; cond_resched ( ) ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) ; bool checksum_valid = false <S2SV_ModStart> partial_cov ) { checksum_valid = ! <S2SV_ModEnd> udp_lib_checksum_complete ( skb <S2SV_ModStart> ( skb ) ; if ( ! checksum_valid <S2SV_ModStart> } if ( checksum_valid ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3881\n\n```\nCWE-119 static vpx_codec_err_t decoder_peek_si_internal ( const uint8_t * data , unsigned int data_sz , vpx_codec_stream_info_t * si , int * is_intra_only , vpx_decrypt_cb decrypt_cb , void * decrypt_state ) { int intra_only_flag = 0 ; <S2SV_StartBug> uint8_t clear_buffer [ 9 ] ; <S2SV_EndBug> if ( data + data_sz <= data ) return VPX_CODEC_INVALID_PARAM ; si -> is_kf = 0 ; si -> w = si -> h = 0 ; if ( decrypt_cb ) { data_sz = VPXMIN ( sizeof ( clear_buffer ) , data_sz ) ; decrypt_cb ( decrypt_state , data , clear_buffer , data_sz ) ; data = clear_buffer ; <S2SV_StartBug> } <S2SV_EndBug> { int show_frame ; int error_resilient ; struct vpx_read_bit_buffer rb = { data , data + data_sz , 0 , NULL , NULL } ; const int frame_marker = vpx_rb_read_literal ( & rb , 2 ) ; const BITSTREAM_PROFILE profile = vp9_read_profile ( & rb ) ; if ( frame_marker != VP9_FRAME_MARKER ) return VPX_CODEC_UNSUP_BITSTREAM ; if ( profile >= MAX_PROFILES ) return VPX_CODEC_UNSUP_BITSTREAM ; <S2SV_StartBug> if ( ( profile >= 2 && data_sz <= 1 ) || data_sz < 1 ) <S2SV_EndBug> return VPX_CODEC_UNSUP_BITSTREAM ; if ( vpx_rb_read_bit ( & rb ) ) { vpx_rb_read_literal ( & rb , 3 ) ; return VPX_CODEC_OK ; } <S2SV_StartBug> if ( data_sz <= 8 ) <S2SV_EndBug> return VPX_CODEC_UNSUP_BITSTREAM ; si -> is_kf = ! vpx_rb_read_bit ( & rb ) ; show_frame = vpx_rb_read_bit ( & rb ) ; error_resilient = vpx_rb_read_bit ( & rb ) ; if ( si -> is_kf ) { if ( ! vp9_read_sync_code ( & rb ) ) return VPX_CODEC_UNSUP_BITSTREAM ; if ( ! parse_bitdepth_colorspace_sampling ( profile , & rb ) ) return VPX_CODEC_UNSUP_BITSTREAM ; vp9_read_frame_size ( & rb , ( int * ) & si -> w , ( int * ) & si -> h ) ; } else { intra_only_flag = show_frame ? 0 : vpx_rb_read_bit ( & rb ) ; rb . bit_offset += error_resilient ? 0 : 2 ; if ( intra_only_flag ) { if ( ! vp9_read_sync_code ( & rb ) ) return VPX_CODEC_UNSUP_BITSTREAM ; if ( profile > PROFILE_0 ) { if ( ! parse_bitdepth_colorspace_sampling ( profile , & rb ) ) return VPX_CODEC_UNSUP_BITSTREAM ; } rb . bit_offset += REF_FRAMES ; vp9_read_frame_size ( & rb , ( int * ) & si -> w , ( int * ) & si -> h ) ; } } } if ( is_intra_only != NULL ) * is_intra_only = intra_only_flag ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8_t clear_buffer [ 10 <S2SV_ModEnd> ] ; if <S2SV_ModStart> clear_buffer ; } if ( data_sz < 1 ) return VPX_CODEC_UNSUP_BITSTREAM ; <S2SV_ModStart> ; if ( vpx_rb_read_bit ( & rb ) ) { if ( profile > <S2SV_ModEnd> 2 && data_sz <S2SV_ModStart> 2 && data_sz < 2 ) return VPX_CODEC_UNSUP_BITSTREAM ; <S2SV_ModEnd> vpx_rb_read_literal ( & <S2SV_ModStart> if ( data_sz < 10 <S2SV_ModEnd> ) return VPX_CODEC_UNSUP_BITSTREAM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 int keepalived_main ( int argc , char * * argv ) { bool report_stopped = true ; struct utsname uname_buf ; char * end ; set_time_now ( ) ; save_cmd_line_options ( argc , argv ) ; debug = 0 ; # ifndef _DEBUG_ prog_type = PROG_TYPE_PARENT ; # endif # ifdef _WITH_VRRP_ __set_bit ( DAEMON_VRRP , & daemon_mode ) ; # endif # ifdef _WITH_LVS_ __set_bit ( DAEMON_CHECKERS , & daemon_mode ) ; # endif # ifdef _WITH_BFD_ __set_bit ( DAEMON_BFD , & daemon_mode ) ; <S2SV_StartBug> # endif <S2SV_EndBug> openlog ( PACKAGE_NAME , LOG_PID , log_facility ) ; # ifdef _MEM_CHECK_ mem_log_init ( PACKAGE_NAME , \"Parent<S2SV_blank>process\" ) ; # endif if ( uname ( & uname_buf ) ) log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>uname()<S2SV_blank>information<S2SV_blank>-<S2SV_blank>error<S2SV_blank>%d\" , errno ) ; else { os_major = ( unsigned ) strtoul ( uname_buf . release , & end , 10 ) ; if ( * end != '.' ) os_major = 0 ; else { os_minor = ( unsigned ) strtoul ( end + 1 , & end , 10 ) ; if ( * end != '.' ) os_major = 0 ; else { if ( ! isdigit ( end [ 1 ] ) ) os_major = 0 ; else os_release = ( unsigned ) strtoul ( end + 1 , & end , 10 ) ; } } if ( ! os_major ) log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>kernel<S2SV_blank>version<S2SV_blank>%s\" , uname_buf . release ) ; if ( ! config_id ) { end = strchrnul ( uname_buf . nodename , '.' ) ; config_id = MALLOC ( ( size_t ) ( end - uname_buf . nodename ) + 1 ) ; strncpy ( config_id , uname_buf . nodename , ( size_t ) ( end - uname_buf . nodename ) ) ; config_id [ end - uname_buf . nodename ] = '\\\\0' ; } } if ( parse_cmdline ( argc , argv ) ) { closelog ( ) ; if ( ! __test_bit ( NO_SYSLOG_BIT , & debug ) ) openlog ( PACKAGE_NAME , LOG_PID | ( ( __test_bit ( LOG_CONSOLE_BIT , & debug ) ) ? LOG_CONS : 0 ) , log_facility ) ; } if ( __test_bit ( LOG_CONSOLE_BIT , & debug ) ) enable_console_log ( ) ; # ifdef GIT_COMMIT log_message ( LOG_INFO , \"Starting<S2SV_blank>%s,<S2SV_blank>git<S2SV_blank>commit<S2SV_blank>%s\" , version_string , GIT_COMMIT ) ; # else log_message ( LOG_INFO , \"Starting<S2SV_blank>%s\" , version_string ) ; # endif core_dump_init ( ) ; if ( os_major ) { if ( KERNEL_VERSION ( os_major , os_minor , os_release ) < LINUX_VERSION_CODE ) { log_message ( LOG_INFO , \"WARNING<S2SV_blank>-<S2SV_blank>keepalived<S2SV_blank>was<S2SV_blank>build<S2SV_blank>for<S2SV_blank>newer<S2SV_blank>Linux<S2SV_blank>%d.%d.%d,<S2SV_blank>running<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\" , ( LINUX_VERSION_CODE >> 16 ) & 0xff , ( LINUX_VERSION_CODE >> 8 ) & 0xff , ( LINUX_VERSION_CODE ) & 0xff , uname_buf . sysname , uname_buf . release , uname_buf . version ) ; } else { log_message ( LOG_INFO , \"Running<S2SV_blank>on<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>(built<S2SV_blank>for<S2SV_blank>Linux<S2SV_blank>%d.%d.%d)\" , uname_buf . sysname , uname_buf . release , uname_buf . version , ( LINUX_VERSION_CODE >> 16 ) & 0xff , ( LINUX_VERSION_CODE >> 8 ) & 0xff , ( LINUX_VERSION_CODE ) & 0xff ) ; } } # ifndef _DEBUG_ log_command_line ( 0 ) ; # endif if ( ! check_conf_file ( conf_file ) ) { if ( __test_bit ( CONFIG_TEST_BIT , & debug ) ) config_test_exit ( ) ; goto end ; } global_data = alloc_global_data ( ) ; <S2SV_StartBug> read_config_file ( ) ; <S2SV_EndBug> init_global_data ( global_data , NULL ) ; # if HAVE_DECL_CLONE_NEWNET if ( override_namespace ) { if ( global_data -> network_namespace ) { log_message ( LOG_INFO , \"Overriding<S2SV_blank>config<S2SV_blank>net_namespace<S2SV_blank>\\'%s\\'<S2SV_blank>with<S2SV_blank>command<S2SV_blank>line<S2SV_blank>namespace<S2SV_blank>\\'%s\\'\" , global_data -> network_namespace , override_namespace ) ; FREE ( global_data -> network_namespace ) ; } global_data -> network_namespace = override_namespace ; override_namespace = NULL ; } # endif if ( ! __test_bit ( CONFIG_TEST_BIT , & debug ) && ( global_data -> instance_name # if HAVE_DECL_CLONE_NEWNET || global_data -> network_namespace # endif ) ) { if ( ( syslog_ident = make_syslog_ident ( PACKAGE_NAME ) ) ) { log_message ( LOG_INFO , \"Changing<S2SV_blank>syslog<S2SV_blank>ident<S2SV_blank>to<S2SV_blank>%s\" , syslog_ident ) ; closelog ( ) ; openlog ( syslog_ident , LOG_PID | ( ( __test_bit ( LOG_CONSOLE_BIT , & debug ) ) ? LOG_CONS : 0 ) , log_facility ) ; } else log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>change<S2SV_blank>syslog<S2SV_blank>ident\" ) ; use_pid_dir = true ; open_log_file ( log_file_name , NULL , # if HAVE_DECL_CLONE_NEWNET global_data -> network_namespace , # else NULL , # endif global_data -> instance_name ) ; } set_child_finder_name ( find_keepalived_child_name ) ; if ( ! __test_bit ( CONFIG_TEST_BIT , & debug ) ) { if ( use_pid_dir ) { create_pid_dir ( ) ; } } # if HAVE_DECL_CLONE_NEWNET if ( global_data -> network_namespace ) { if ( global_data -> network_namespace && ! set_namespaces ( global_data -> network_namespace ) ) { log_message ( LOG_ERR , \"Unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>exiting\" , global_data -> network_namespace ) ; goto end ; } } # endif if ( ! __test_bit ( CONFIG_TEST_BIT , & debug ) ) { if ( global_data -> instance_name ) { if ( ! main_pidfile && ( main_pidfile = make_pidfile_name ( KEEPALIVED_PID_DIR KEEPALIVED_PID_FILE , global_data -> instance_name , PID_EXTENSION ) ) ) free_main_pidfile = true ; # ifdef _WITH_LVS_ if ( ! checkers_pidfile && ( checkers_pidfile = make_pidfile_name ( KEEPALIVED_PID_DIR CHECKERS_PID_FILE , global_data -> instance_name , PID_EXTENSION ) ) ) free_checkers_pidfile = true ; # endif # ifdef _WITH_VRRP_ if ( ! vrrp_pidfile && ( vrrp_pidfile = make_pidfile_name ( KEEPALIVED_PID_DIR VRRP_PID_FILE , global_data -> instance_name , PID_EXTENSION ) ) ) free_vrrp_pidfile = true ; # endif # ifdef _WITH_BFD_ if ( ! bfd_pidfile && ( bfd_pidfile = make_pidfile_name ( KEEPALIVED_PID_DIR VRRP_PID_FILE , global_data -> instance_name , PID_EXTENSION ) ) ) free_bfd_pidfile = true ; # endif } if ( use_pid_dir ) { if ( ! main_pidfile ) main_pidfile = KEEPALIVED_PID_DIR KEEPALIVED_PID_FILE PID_EXTENSION ; # ifdef _WITH_LVS_ if ( ! checkers_pidfile ) checkers_pidfile = KEEPALIVED_PID_DIR CHECKERS_PID_FILE PID_EXTENSION ; # endif # ifdef _WITH_VRRP_ if ( ! vrrp_pidfile ) vrrp_pidfile = KEEPALIVED_PID_DIR VRRP_PID_FILE PID_EXTENSION ; # endif # ifdef _WITH_BFD_ if ( ! bfd_pidfile ) bfd_pidfile = KEEPALIVED_PID_DIR BFD_PID_FILE PID_EXTENSION ; # endif } else { if ( ! main_pidfile ) main_pidfile = PID_DIR KEEPALIVED_PID_FILE PID_EXTENSION ; # ifdef _WITH_LVS_ if ( ! checkers_pidfile ) checkers_pidfile = PID_DIR CHECKERS_PID_FILE PID_EXTENSION ; # endif # ifdef _WITH_VRRP_ if ( ! vrrp_pidfile ) vrrp_pidfile = PID_DIR VRRP_PID_FILE PID_EXTENSION ; # endif # ifdef _WITH_BFD_ if ( ! bfd_pidfile ) bfd_pidfile = PID_DIR BFD_PID_FILE PID_EXTENSION ; # endif } if ( keepalived_running ( daemon_mode ) ) { log_message ( LOG_INFO , \"daemon<S2SV_blank>is<S2SV_blank>already<S2SV_blank>running\" ) ; report_stopped = false ; goto end ; } } if ( ! __test_bit ( DONT_FORK_BIT , & debug ) && xdaemon ( false , false , true ) > 0 ) { closelog ( ) ; FREE_PTR ( config_id ) ; FREE_PTR ( orig_core_dump_pattern ) ; close_std_fd ( ) ; exit ( 0 ) ; } <S2SV_StartBug> umask ( 0 ) ; <S2SV_EndBug> # ifdef _MEM_CHECK_ enable_mem_log_termination ( ) ; # endif if ( __test_bit ( CONFIG_TEST_BIT , & debug ) ) { validate_config ( ) ; config_test_exit ( ) ; } if ( ! pidfile_write ( main_pidfile , getpid ( ) ) ) goto end ; master = thread_make_master ( ) ; signal_init ( ) ; if ( ! start_keepalived ( ) ) log_message ( LOG_INFO , \"Warning<S2SV_blank>-<S2SV_blank>keepalived<S2SV_blank>has<S2SV_blank>no<S2SV_blank>configuration<S2SV_blank>to<S2SV_blank>run\" ) ; initialise_debug_options ( ) ; # ifdef THREAD_DUMP register_parent_thread_addresses ( ) ; # endif launch_thread_scheduler ( master ) ; stop_keepalived ( ) ; # ifdef THREAD_DUMP deregister_thread_addresses ( ) ; # endif end : if ( report_stopped ) { # ifdef GIT_COMMIT log_message ( LOG_INFO , \"Stopped<S2SV_blank>%s,<S2SV_blank>git<S2SV_blank>commit<S2SV_blank>%s\" , version_string , GIT_COMMIT ) ; # else log_message ( LOG_INFO , \"Stopped<S2SV_blank>%s\" , version_string ) ; # endif } # if HAVE_DECL_CLONE_NEWNET if ( global_data && global_data -> network_namespace ) clear_namespaces ( ) ; # endif if ( use_pid_dir ) remove_pid_dir ( ) ; if ( orig_core_dump_pattern ) update_core_dump_pattern ( orig_core_dump_pattern ) ; free_parent_mallocs_startup ( false ) ; free_parent_mallocs_exit ( ) ; free_global_data ( global_data ) ; closelog ( ) ; # ifndef _MEM_CHECK_LOG_ FREE_PTR ( syslog_ident ) ; # else if ( syslog_ident ) free ( syslog_ident ) ; # endif close_std_fd ( ) ; exit ( KEEPALIVED_EXIT_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif umask ( 022 ) ; <S2SV_ModStart> ( ) ; global_data -> umask = umask_val ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> # ifdef _MEM_CHECK_\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14016\n\n```\nCWE-125 static bool r_bin_mdmp_init_directory ( struct r_bin_mdmp_obj * obj ) { int i ; <S2SV_StartBug> ut8 * directory_base ; <S2SV_EndBug> struct minidump_directory * entry ; directory_base = obj -> b -> buf + obj -> hdr -> stream_directory_rva ; sdb_num_set ( obj -> kv , \"mdmp_directory.offset\" , obj -> hdr -> stream_directory_rva , 0 ) ; sdb_set ( obj -> kv , \"mdmp_directory.format\" , \"[4]E?<S2SV_blank>\" \"(mdmp_stream_type)StreamType<S2SV_blank>\" \"(mdmp_location_descriptor)Location\" , 0 ) ; <S2SV_StartBug> for ( i = 0 ; i < ( int ) obj -> hdr -> number_of_streams ; i ++ ) { <S2SV_EndBug> <S2SV_StartBug> entry = ( struct minidump_directory * ) ( directory_base + ( i * sizeof ( struct minidump_directory ) ) ) ; <S2SV_EndBug> <S2SV_StartBug> r_bin_mdmp_init_directory_entry ( obj , entry ) ; <S2SV_EndBug> } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; struct minidump_directory entry <S2SV_ModEnd> ; sdb_num_set ( <S2SV_ModStart> 0 ) ; ut64 rvadir = obj -> hdr -> stream_directory_rva ; <S2SV_ModStart> ++ ) { ut32 delta = <S2SV_ModEnd> i * sizeof <S2SV_ModStart> struct minidump_directory ) ; int r = r_buf_read_at ( obj -> b , rvadir + delta , ( ut8 * ) & entry , sizeof ( struct minidump_directory <S2SV_ModStart> ) ) ; if ( r ) { <S2SV_ModStart> ( obj , & <S2SV_ModStart> entry ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 void Com_WriteConfig_f ( void ) { char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { <S2SV_StartBug> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; <S2SV_EndBug> return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; COM_DefaultExtension ( filename , sizeof ( filename ) , \".cfg\" ) ; Com_Printf ( \"Writing<S2SV_blank>%s.\\\\n\" , filename ) ; Com_WriteConfigToFile ( filename ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Com_Printf ( \"Usage:<S2SV_blank>writeconfig<S2SV_blank><filename>\\\\n\" ) ; return ; } if ( ! COM_CompareExtension ( filename , \".cfg\" ) ) { Com_Printf ( \"Com_WriteConfig_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".cfg\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-89(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7262\n\n```\nCWE-89 int msPostGISLayerSetTimeFilter ( layerObj * lp , const char * timestring , const char * timefield ) { char * * atimes , * * aranges = NULL ; int numtimes = 0 , i = 0 , numranges = 0 ; size_t buffer_size = 512 ; char buffer [ 512 ] , bufferTmp [ 512 ] ; buffer [ 0 ] = '\\\\0' ; bufferTmp [ 0 ] = '\\\\0' ; if ( ! lp || ! timestring || ! timefield ) <S2SV_StartBug> return MS_FALSE ; <S2SV_EndBug> if ( strstr ( timestring , \",\" ) == NULL && strstr ( timestring , \"/\" ) == NULL ) { createPostgresTimeCompareSimple ( timefield , timestring , buffer , buffer_size ) ; } else { atimes = msStringSplit ( timestring , ',' , & numtimes ) ; if ( atimes == NULL || numtimes < 1 ) return MS_FALSE ; strlcat ( buffer , \"(\" , buffer_size ) ; for ( i = 0 ; i < numtimes ; i ++ ) { if ( i != 0 ) { strlcat ( buffer , \"<S2SV_blank>OR<S2SV_blank>\" , buffer_size ) ; } strlcat ( buffer , \"(\" , buffer_size ) ; aranges = msStringSplit ( atimes [ i ] , '/' , & numranges ) ; if ( ! aranges ) return MS_FALSE ; if ( numranges == 1 ) { createPostgresTimeCompareSimple ( timefield , atimes [ i ] , bufferTmp , buffer_size ) ; strlcat ( buffer , bufferTmp , buffer_size ) ; } else if ( numranges == 2 ) { createPostgresTimeCompareRange ( timefield , aranges [ 0 ] , aranges [ 1 ] , bufferTmp , buffer_size ) ; strlcat ( buffer , bufferTmp , buffer_size ) ; } else { return MS_FALSE ; } msFreeCharArray ( aranges , numranges ) ; strlcat ( buffer , \")\" , buffer_size ) ; } strlcat ( buffer , \")\" , buffer_size ) ; msFreeCharArray ( atimes , numtimes ) ; } if ( ! * buffer ) { return MS_FALSE ; } if ( lp -> filteritem ) free ( lp -> filteritem ) ; lp -> filteritem = msStrdup ( timefield ) ; if ( & lp -> filter ) { if ( lp -> filter . type == MS_EXPRESSION ) { snprintf ( bufferTmp , buffer_size , \"(%s)<S2SV_blank>and<S2SV_blank>%s\" , lp -> filter . string , buffer ) ; loadExpressionString ( & lp -> filter , bufferTmp ) ; } else { freeExpression ( & lp -> filter ) ; loadExpressionString ( & lp -> filter , buffer ) ; } } return MS_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return MS_FALSE ; if ( strchr ( timestring , '\\\\'' ) || strchr ( timestring , '\\\\\\\\' ) ) { msSetError ( MS_MISCERR , \"Invalid<S2SV_blank>time<S2SV_blank>filter.\" , \"msPostGISLayerSetTimeFilter()\" ) ; return MS_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6368\n\n```\nCWE-20 void kvm_lapic_sync_to_vapic ( struct kvm_vcpu * vcpu ) { u32 data , tpr ; int max_irr , max_isr ; <S2SV_StartBug> struct kvm_lapic * apic = vcpu -> arch . apic ; <S2SV_EndBug> void * vapic ; apic_sync_pv_eoi_to_guest ( vcpu , apic ) ; if ( ! test_bit ( KVM_APIC_CHECK_VAPIC , & vcpu -> arch . apic_attention ) ) return ; tpr = kvm_apic_get_reg ( apic , APIC_TASKPRI ) & 0xff ; max_irr = apic_find_highest_irr ( apic ) ; if ( max_irr < 0 ) max_irr = 0 ; max_isr = apic_find_highest_isr ( apic ) ; if ( max_isr < 0 ) max_isr = 0 ; data = ( tpr & 0xff ) | ( ( max_isr & 0xf0 ) << 8 ) | ( max_irr << 24 ) ; <S2SV_StartBug> vapic = kmap_atomic ( vcpu -> arch . apic -> vapic_page ) ; <S2SV_EndBug> * ( u32 * ) ( vapic + offset_in_page ( vcpu -> arch . apic -> vapic_addr ) ) = data ; kunmap_atomic ( vapic ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arch . apic <S2SV_ModEnd> ; apic_sync_pv_eoi_to_guest ( <S2SV_ModStart> 24 ) ; kvm_write_guest_cached ( vcpu -> kvm , & <S2SV_ModEnd> vcpu -> arch <S2SV_ModStart> . apic -> vapic_cache , & data , sizeof ( u32 ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11464\n\n```\nCWE-369 static void box_blur_line ( gint box_width , gint even_offset , guchar * src , guchar * dest , gint len , gint bpp ) { gint i ; gint lead ; gint output ; gint trail ; <S2SV_StartBug> gint * ac ; <S2SV_EndBug> ac = g_new0 ( gint , bpp ) ; lead = 0 ; if ( box_width % 2 != 0 ) { output = lead - ( box_width - 1 ) / 2 ; trail = lead - box_width ; } else { if ( even_offset == 1 ) { output = lead + 1 - box_width / 2 ; trail = lead - box_width ; } else if ( even_offset == - 1 ) { output = lead - box_width / 2 ; trail = lead - box_width ; } else { g_assert_not_reached ( ) ; } } for ( i = 0 ; i < bpp ; i ++ ) ac [ i ] = 0 ; while ( output < len ) { guint coverage = ( lead < len ? lead : len - 1 ) - ( trail >= 0 ? trail : - 1 ) ; # ifdef READABLE_BOXBLUR_CODE for ( i = 0 ; i < bpp ; i ++ ) { if ( lead < len ) ac [ i ] += src [ bpp * lead + i ] ; if ( trail >= 0 ) ac [ i ] -= src [ bpp * trail + i ] ; if ( output >= 0 ) dest [ bpp * output + i ] = ( ac [ i ] + ( coverage >> 1 ) ) / coverage ; } # endif if ( lead < len ) { if ( trail >= 0 ) { for ( i = 0 ; i < bpp ; i ++ ) { ac [ i ] += src [ bpp * lead + i ] ; ac [ i ] -= src [ bpp * trail + i ] ; dest [ bpp * output + i ] = ( ac [ i ] + ( coverage >> 1 ) ) / coverage ; } } else if ( output >= 0 ) { for ( i = 0 ; i < bpp ; i ++ ) { ac [ i ] += src [ bpp * lead + i ] ; dest [ bpp * output + i ] = ( ac [ i ] + ( coverage >> 1 ) ) / coverage ; } } else { for ( i = 0 ; i < bpp ; i ++ ) ac [ i ] += src [ bpp * lead + i ] ; } } else if ( trail >= 0 ) { for ( i = 0 ; i < bpp ; i ++ ) { ac [ i ] -= src [ bpp * trail + i ] ; dest [ bpp * output + i ] = ( ac [ i ] + ( coverage >> 1 ) ) / coverage ; } } else if ( output >= 0 ) { for ( i = 0 ; i < bpp ; i ++ ) dest [ bpp * output + i ] = ( ac [ i ] + ( coverage >> 1 ) ) / coverage ; } lead ++ ; output ++ ; trail ++ ; } g_free ( ac ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gint * ac ; g_assert ( box_width > 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6520\n\n```\nCWE-264 static void start_daemon ( ) { struct usb_sock_t * usb_sock ; if ( g_options . noprinter_mode == 0 ) { usb_sock = usb_open ( ) ; if ( usb_sock == NULL ) goto cleanup_usb ; } else usb_sock = NULL ; uint16_t desired_port = g_options . desired_port ; <S2SV_StartBug> struct tcp_sock_t * tcp_socket ; <S2SV_EndBug> <S2SV_StartBug> while ( ( tcp_socket = tcp_open ( desired_port ) ) == NULL && <S2SV_EndBug> <S2SV_StartBug> g_options . only_desired_port == 0 ) { <S2SV_EndBug> desired_port ++ ; if ( desired_port == 1 || desired_port == 0 ) desired_port = 49152 ; <S2SV_StartBug> } <S2SV_EndBug> if ( tcp_socket == NULL ) goto cleanup_tcp ; <S2SV_StartBug> uint16_t real_port = tcp_port_number_get ( tcp_socket ) ; <S2SV_EndBug> if ( desired_port != 0 && g_options . only_desired_port == 1 && desired_port != real_port ) { ERR ( \"Received<S2SV_blank>port<S2SV_blank>number<S2SV_blank>did<S2SV_blank>not<S2SV_blank>match<S2SV_blank>requested<S2SV_blank>port<S2SV_blank>number.\" \"<S2SV_blank>The<S2SV_blank>requested<S2SV_blank>port<S2SV_blank>number<S2SV_blank>may<S2SV_blank>be<S2SV_blank>too<S2SV_blank>high.\" ) ; goto cleanup_tcp ; } printf ( \"%u|\" , real_port ) ; fflush ( stdout ) ; <S2SV_StartBug> uint16_t pid ; <S2SV_EndBug> if ( ! g_options . nofork_mode && ( pid = fork ( ) ) > 0 ) { printf ( \"%u|\" , pid ) ; exit ( 0 ) ; } if ( usb_can_callback ( usb_sock ) ) usb_register_callback ( usb_sock ) ; for ( ; ; ) { struct service_thread_param * args = calloc ( 1 , sizeof ( * args ) ) ; if ( args == NULL ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>space<S2SV_blank>for<S2SV_blank>thread<S2SV_blank>args\" ) ; goto cleanup_thread ; } args -> usb_sock = usb_sock ; <S2SV_StartBug> args -> tcp = tcp_conn_accept ( tcp_socket ) ; <S2SV_EndBug> if ( args -> tcp == NULL ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>tcp<S2SV_blank>connection\" ) ; goto cleanup_thread ; } int status = pthread_create ( & args -> thread_handle , NULL , & service_connection , args ) ; if ( status ) { ERR ( \"Failed<S2SV_blank>to<S2SV_blank>spawn<S2SV_blank>thread,<S2SV_blank>error<S2SV_blank>%d\" , status ) ; goto cleanup_thread ; } continue ; cleanup_thread : if ( args != NULL ) { if ( args -> tcp != NULL ) tcp_conn_close ( args -> tcp ) ; free ( args ) ; } break ; } cleanup_tcp : if ( tcp_socket != NULL ) tcp_close ( tcp_socket ) ; <S2SV_StartBug> cleanup_usb : <S2SV_EndBug> if ( usb_sock != NULL ) usb_close ( usb_sock ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tcp_sock_t * tcp_socket = NULL , * tcp6_socket = NULL ; for ( ; ; ) { <S2SV_ModEnd> tcp_socket = tcp_open <S2SV_ModStart> ( desired_port ) ; tcp6_socket = tcp6_open ( desired_port ) ; if ( tcp_socket || tcp6_socket || <S2SV_ModEnd> g_options . only_desired_port <S2SV_ModStart> g_options . only_desired_port ) break ; <S2SV_ModEnd> desired_port ++ ; <S2SV_ModStart> = 49152 ; NOTE ( \"Access<S2SV_blank>to<S2SV_blank>desired<S2SV_blank>port<S2SV_blank>failed,<S2SV_blank>trying<S2SV_blank>alternative<S2SV_blank>port<S2SV_blank>%d\" , desired_port ) ; } if ( tcp_socket == NULL && tcp6_socket <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ; uint16_t real_port ; if ( tcp_socket ) real_port <S2SV_ModStart> tcp_port_number_get ( tcp_socket ) ; else real_port = tcp_port_number_get ( tcp6_socket <S2SV_ModStart> stdout ) ; NOTE ( \"Port:<S2SV_blank>%d,<S2SV_blank>IPv4<S2SV_blank>%savailable,<S2SV_blank>IPv6<S2SV_blank>%savailable\" , real_port , tcp_socket ? \"\" : \"not<S2SV_blank>\" , tcp6_socket ? \"\" : \"not<S2SV_blank>\" ) ; <S2SV_ModStart> -> tcp = tcp_conn_select ( tcp_socket , tcp6_socket <S2SV_ModEnd> ) ; if <S2SV_ModStart> tcp_socket ) ; if ( tcp6_socket != NULL ) tcp_close ( tcp6_socket ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-252(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-1999-0199\n\n```\nCWE-252 static void init_syntax_once ( ) { register int c ; <S2SV_StartBug> static int done ; <S2SV_EndBug> if ( done ) return ; bzero ( re_syntax_table , sizeof re_syntax_table ) ; <S2SV_StartBug> for ( c = 'a' ; c <= 'z' ; c ++ ) <S2SV_EndBug> re_syntax_table [ c ] = Sword ; for ( c = 'A' ; c <= 'Z' ; c ++ ) re_syntax_table [ c ] = Sword ; for ( c = '0' ; c <= '9' ; c ++ ) re_syntax_table [ c ] = Sword ; re_syntax_table [ '_' ] = Sword ; done = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> static int done = 0 <S2SV_ModStart> ( c = 0 ; c < CHAR_SET_SIZE ; ++ c ) if ( ISALNUM ( c ) <S2SV_ModEnd> ) re_syntax_table [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-255(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5351\n\n```\nCWE-255 kadm5_ret_t kadm5_randkey_principal_3 ( void * server_handle , krb5_principal principal , krb5_boolean keepold , int n_ks_tuple , krb5_key_salt_tuple * ks_tuple , krb5_keyblock * * keyblocks , int * n_keys ) { krb5_db_entry * kdb ; osa_princ_ent_rec adb ; krb5_int32 now ; kadm5_policy_ent_rec pol ; <S2SV_StartBug> int ret , last_pwd ; <S2SV_EndBug> krb5_boolean have_pol = FALSE ; kadm5_server_handle_t handle = server_handle ; krb5_keyblock * act_mkey ; krb5_kvno act_kvno ; int new_n_ks_tuple = 0 ; krb5_key_salt_tuple * new_ks_tuple = NULL ; if ( keyblocks ) * keyblocks = NULL ; CHECK_HANDLE ( server_handle ) ; krb5_clear_error_message ( handle -> context ) ; if ( principal == NULL ) return EINVAL ; if ( ( ret = kdb_get_entry ( handle , principal , & kdb , & adb ) ) ) return ( ret ) ; ret = apply_keysalt_policy ( handle , adb . policy , n_ks_tuple , ks_tuple , & new_n_ks_tuple , & new_ks_tuple ) ; if ( ret ) goto done ; if ( krb5_principal_compare ( handle -> context , principal , hist_princ ) ) { if ( keepold ) return KADM5_PROTECT_PRINCIPAL ; new_n_ks_tuple = 1 ; } ret = kdb_get_active_mkey ( handle , & act_kvno , & act_mkey ) ; if ( ret ) goto done ; ret = krb5_dbe_crk ( handle -> context , act_mkey , new_ks_tuple , new_n_ks_tuple , keepold , kdb ) ; if ( ret ) goto done ; ret = krb5_dbe_update_mkvno ( handle -> context , kdb , act_kvno ) ; if ( ret ) goto done ; kdb -> attributes &= ~ KRB5_KDB_REQUIRES_PWCHANGE ; ret = krb5_timeofday ( handle -> context , & now ) ; if ( ret ) goto done ; if ( ( adb . aux_attributes & KADM5_POLICY ) ) { ret = get_policy ( handle , adb . policy , & pol , & have_pol ) ; if ( ret ) goto done ; } if ( have_pol ) { ret = krb5_dbe_lookup_last_pwd_change ( handle -> context , kdb , & last_pwd ) ; if ( ret ) goto done ; # if 0 if ( ( now - last_pwd ) < pol . pw_min_life && ! ( kdb -> attributes & KRB5_KDB_REQUIRES_PWCHANGE ) ) { ret = KADM5_PASS_TOOSOON ; goto done ; } # endif if ( pol . pw_max_life ) kdb -> pw_expiration = now + pol . pw_max_life ; else kdb -> pw_expiration = 0 ; } else { kdb -> pw_expiration = 0 ; } ret = krb5_dbe_update_last_pwd_change ( handle -> context , kdb , now ) ; if ( ret ) goto done ; kdb -> fail_auth_count = 0 ; if ( keyblocks ) { <S2SV_StartBug> ret = decrypt_key_data ( handle -> context , <S2SV_EndBug> <S2SV_StartBug> kdb -> n_key_data , kdb -> key_data , <S2SV_EndBug> keyblocks , n_keys ) ; if ( ret ) goto done ; } kdb -> mask = KADM5_KEY_DATA | KADM5_FAIL_AUTH_COUNT ; ; ret = k5_kadm5_hook_chpass ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_PRECOMMIT , principal , keepold , new_n_ks_tuple , new_ks_tuple , NULL ) ; if ( ret ) goto done ; if ( ( ret = kdb_put_entry ( handle , kdb , & adb ) ) ) goto done ; ( void ) k5_kadm5_hook_chpass ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_POSTCOMMIT , principal , keepold , new_n_ks_tuple , new_ks_tuple , NULL ) ; ret = KADM5_OK ; done : free ( new_ks_tuple ) ; kdb_free_entry ( handle , kdb , & adb ) ; if ( have_pol ) kadm5_free_policy_ent ( handle -> lhandle , & pol ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret , last_pwd , n_new_keys <S2SV_ModStart> keyblocks ) { n_new_keys = count_new_keys ( kdb -> n_key_data , kdb -> key_data ) ; <S2SV_ModStart> -> context , n_new_keys <S2SV_ModEnd> , kdb ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_update_mbgraph_stats ( VP9_COMP * cpi ) { VP9_COMMON * const cm = & cpi -> common ; int i , n_frames = vp9_lookahead_depth ( cpi -> lookahead ) ; <S2SV_StartBug> YV12_BUFFER_CONFIG * golden_ref = get_ref_frame_buffer ( cpi , GOLDEN_FRAME ) ; <S2SV_EndBug> if ( n_frames <= cpi -> rc . frames_till_gf_update_due ) return ; if ( n_frames > MAX_LAG_BUFFERS ) n_frames = MAX_LAG_BUFFERS ; cpi -> mbgraph_n_frames = n_frames ; for ( i = 0 ; i < n_frames ; i ++ ) { MBGRAPH_FRAME_STATS * frame_stats = & cpi -> mbgraph_stats [ i ] ; <S2SV_StartBug> vpx_memset ( frame_stats -> mb_stats , 0 , <S2SV_EndBug> cm -> mb_rows * cm -> mb_cols * sizeof ( * cpi -> mbgraph_stats [ i ] . mb_stats ) ) ; } for ( i = 0 ; i < n_frames ; i ++ ) { MBGRAPH_FRAME_STATS * frame_stats = & cpi -> mbgraph_stats [ i ] ; struct lookahead_entry * q_cur = vp9_lookahead_peek ( cpi -> lookahead , i ) ; assert ( q_cur != NULL ) ; update_mbgraph_frame_stats ( cpi , frame_stats , & q_cur -> img , golden_ref , cpi -> Source ) ; } <S2SV_StartBug> vp9_clear_system_state ( ) ; <S2SV_EndBug> separate_arf_mbs ( cpi ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi , GOLDEN_FRAME ) ; assert ( golden_ref != NULL <S2SV_ModStart> i ] ; memset <S2SV_ModEnd> ( frame_stats -> <S2SV_ModStart> ) ; } vpx_clear_system_state <S2SV_ModEnd> ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2188\n\n```\nCWE-000 static int iowarrior_probe ( struct usb_interface * interface , const struct usb_device_id * id ) { struct usb_device * udev = interface_to_usbdev ( interface ) ; struct iowarrior * dev = NULL ; struct usb_host_interface * iface_desc ; struct usb_endpoint_descriptor * endpoint ; int i ; int retval = - ENOMEM ; dev = kzalloc ( sizeof ( struct iowarrior ) , GFP_KERNEL ) ; if ( dev == NULL ) { dev_err ( & interface -> dev , \"Out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; return retval ; } mutex_init ( & dev -> mutex ) ; atomic_set ( & dev -> intr_idx , 0 ) ; atomic_set ( & dev -> read_idx , 0 ) ; spin_lock_init ( & dev -> intr_idx_lock ) ; atomic_set ( & dev -> overflow_flag , 0 ) ; init_waitqueue_head ( & dev -> read_wait ) ; atomic_set ( & dev -> write_busy , 0 ) ; init_waitqueue_head ( & dev -> write_wait ) ; dev -> udev = udev ; dev -> interface = interface ; iface_desc = interface -> cur_altsetting ; <S2SV_StartBug> dev -> product_id = le16_to_cpu ( udev -> descriptor . idProduct ) ; <S2SV_EndBug> for ( i = 0 ; i < iface_desc -> desc . bNumEndpoints ; ++ i ) { endpoint = & iface_desc -> endpoint [ i ] . desc ; if ( usb_endpoint_is_int_in ( endpoint ) ) dev -> int_in_endpoint = endpoint ; if ( usb_endpoint_is_int_out ( endpoint ) ) dev -> int_out_endpoint = endpoint ; } dev -> report_size = usb_endpoint_maxp ( dev -> int_in_endpoint ) ; if ( ( dev -> interface -> cur_altsetting -> desc . bInterfaceNumber == 0 ) && ( dev -> product_id == USB_DEVICE_ID_CODEMERCS_IOW56 ) ) dev -> report_size = 7 ; dev -> int_in_urb = usb_alloc_urb ( 0 , GFP_KERNEL ) ; if ( ! dev -> int_in_urb ) { dev_err ( & interface -> dev , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>interrupt_in_urb\\\\n\" ) ; goto error ; } dev -> int_in_buffer = kmalloc ( dev -> report_size , GFP_KERNEL ) ; if ( ! dev -> int_in_buffer ) { dev_err ( & interface -> dev , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>int_in_buffer\\\\n\" ) ; goto error ; } usb_fill_int_urb ( dev -> int_in_urb , dev -> udev , usb_rcvintpipe ( dev -> udev , dev -> int_in_endpoint -> bEndpointAddress ) , dev -> int_in_buffer , dev -> report_size , iowarrior_callback , dev , dev -> int_in_endpoint -> bInterval ) ; dev -> read_queue = kmalloc ( ( ( dev -> report_size + 1 ) * MAX_INTERRUPT_BUFFER ) , GFP_KERNEL ) ; if ( ! dev -> read_queue ) { dev_err ( & interface -> dev , \"Couldn\\'t<S2SV_blank>allocate<S2SV_blank>read_queue\\\\n\" ) ; goto error ; } memset ( dev -> chip_serial , 0x00 , sizeof ( dev -> chip_serial ) ) ; usb_string ( udev , udev -> descriptor . iSerialNumber , dev -> chip_serial , sizeof ( dev -> chip_serial ) ) ; if ( strlen ( dev -> chip_serial ) != 8 ) memset ( dev -> chip_serial , 0x00 , sizeof ( dev -> chip_serial ) ) ; if ( dev -> interface -> cur_altsetting -> desc . bInterfaceNumber == 0 ) { usb_control_msg ( udev , usb_sndctrlpipe ( udev , 0 ) , 0x0A , USB_TYPE_CLASS | USB_RECIP_INTERFACE , 0 , 0 , NULL , 0 , USB_CTRL_SET_TIMEOUT ) ; } dev -> present = 1 ; usb_set_intfdata ( interface , dev ) ; retval = usb_register_dev ( interface , & iowarrior_class ) ; if ( retval ) { dev_err ( & interface -> dev , \"Not<S2SV_blank>able<S2SV_blank>to<S2SV_blank>get<S2SV_blank>a<S2SV_blank>minor<S2SV_blank>for<S2SV_blank>this<S2SV_blank>device.\\\\n\" ) ; usb_set_intfdata ( interface , NULL ) ; goto error ; } dev -> minor = interface -> minor ; dev_info ( & interface -> dev , \"IOWarrior<S2SV_blank>product=0x%x,<S2SV_blank>serial=%s<S2SV_blank>interface=%d<S2SV_blank>\" \"now<S2SV_blank>attached<S2SV_blank>to<S2SV_blank>iowarrior%d\\\\n\" , dev -> product_id , dev -> chip_serial , iface_desc -> desc . bInterfaceNumber , dev -> minor - IOWARRIOR_MINOR_BASE ) ; return retval ; error : iowarrior_delete ( dev ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> idProduct ) ; if ( iface_desc -> desc . bNumEndpoints < 1 ) { dev_err ( & interface -> dev , \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>endpoints\\\\n\" ) ; retval = - EINVAL ; goto error ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7143\n\n```\nCWE-285 static int m_authenticate ( struct Client * client_p , struct Client * source_p , int parc , const char * parv [ ] ) { struct Client * agent_p = NULL ; struct Client * saslserv_p = NULL ; if ( ! IsCapable ( source_p , CLICAP_SASL ) ) return 0 ; if ( strlen ( client_p -> id ) == 3 ) { <S2SV_StartBug> exit_client ( client_p , client_p , client_p , \"Mixing<S2SV_blank>client<S2SV_blank>and<S2SV_blank>server<S2SV_blank>protocol\" ) ; <S2SV_EndBug> return 0 ; } saslserv_p = find_named_client ( ConfigFileEntry . sasl_service ) ; if ( saslserv_p == NULL || ! IsService ( saslserv_p ) ) { sendto_one ( source_p , form_str ( ERR_SASLABORTED ) , me . name , EmptyString ( source_p -> name ) ? \"*\" : source_p -> name ) ; return 0 ; } if ( source_p -> localClient -> sasl_complete ) { * source_p -> localClient -> sasl_agent = '\\\\0' ; source_p -> localClient -> sasl_complete = 0 ; } if ( strlen ( parv [ 1 ] ) > 400 ) { sendto_one ( source_p , form_str ( ERR_SASLTOOLONG ) , me . name , EmptyString ( source_p -> name ) ? \"*\" : source_p -> name ) ; return 0 ; } if ( ! * source_p -> id ) { strcpy ( source_p -> id , generate_uid ( ) ) ; add_to_id_hash ( source_p -> id , source_p ) ; } if ( * source_p -> localClient -> sasl_agent ) agent_p = find_id ( source_p -> localClient -> sasl_agent ) ; if ( agent_p == NULL ) { sendto_one ( saslserv_p , \":%s<S2SV_blank>ENCAP<S2SV_blank>%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>H<S2SV_blank>%s<S2SV_blank>%s\" , me . id , saslserv_p -> servptr -> name , source_p -> id , saslserv_p -> id , source_p -> host , source_p -> sockhost ) ; if ( ! strcmp ( parv [ 1 ] , \"EXTERNAL\" ) && source_p -> certfp != NULL ) sendto_one ( saslserv_p , \":%s<S2SV_blank>ENCAP<S2SV_blank>%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>S<S2SV_blank>%s<S2SV_blank>%s\" , me . id , saslserv_p -> servptr -> name , source_p -> id , saslserv_p -> id , parv [ 1 ] , source_p -> certfp ) ; else sendto_one ( saslserv_p , \":%s<S2SV_blank>ENCAP<S2SV_blank>%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>S<S2SV_blank>%s\" , me . id , saslserv_p -> servptr -> name , source_p -> id , saslserv_p -> id , parv [ 1 ] ) ; rb_strlcpy ( source_p -> localClient -> sasl_agent , saslserv_p -> id , IDLEN ) ; } else sendto_one ( agent_p , \":%s<S2SV_blank>ENCAP<S2SV_blank>%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>C<S2SV_blank>%s\" , me . id , agent_p -> servptr -> name , source_p -> id , agent_p -> id , parv [ 1 ] ) ; source_p -> localClient -> sasl_out ++ ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> client_p , \"Mixing<S2SV_blank>client<S2SV_blank>and<S2SV_blank>server<S2SV_blank>protocol\" ) ; return 0 ; } if ( * parv [ 1 ] == ':' || strchr ( parv [ 1 ] , '<S2SV_blank>' ) ) { exit_client ( client_p , client_p , client_p , \"Malformed<S2SV_blank>AUTHENTICATE\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13048\n\n```\nCWE-125 static int rsvp_obj_print ( netdissect_options * ndo , const u_char * pptr , u_int plen , const u_char * tptr , const char * ident , u_int tlen , const struct rsvp_common_header * rsvp_com_header ) { const struct rsvp_object_header * rsvp_obj_header ; const u_char * obj_tptr ; union { const struct rsvp_obj_integrity_t * rsvp_obj_integrity ; const struct rsvp_obj_frr_t * rsvp_obj_frr ; } obj_ptr ; u_short rsvp_obj_len , rsvp_obj_ctype , obj_tlen , intserv_serv_tlen ; int hexdump , processed , padbytes , error_code , error_value , i , sigcheck ; union { float f ; uint32_t i ; } bw ; uint8_t namelen ; u_int action , subchannel ; while ( tlen >= sizeof ( struct rsvp_object_header ) ) { ND_TCHECK2 ( * tptr , sizeof ( struct rsvp_object_header ) ) ; rsvp_obj_header = ( const struct rsvp_object_header * ) tptr ; rsvp_obj_len = EXTRACT_16BITS ( rsvp_obj_header -> length ) ; rsvp_obj_ctype = rsvp_obj_header -> ctype ; if ( rsvp_obj_len % 4 ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>size<S2SV_blank>%u<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4\" , ident , rsvp_obj_len ) ) ; return - 1 ; } if ( rsvp_obj_len < sizeof ( struct rsvp_object_header ) ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>header<S2SV_blank>too<S2SV_blank>short<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%lu\" , ident , rsvp_obj_len , ( unsigned long ) sizeof ( const struct rsvp_object_header ) ) ) ; return - 1 ; } ND_PRINT ( ( ndo , \"%s%s<S2SV_blank>Object<S2SV_blank>(%u)<S2SV_blank>Flags:<S2SV_blank>[%s\" , ident , tok2str ( rsvp_obj_values , \"Unknown\" , rsvp_obj_header -> class_num ) , rsvp_obj_header -> class_num , ( ( rsvp_obj_header -> class_num ) & 0x80 ) ? \"ignore\" : \"reject\" ) ) ; if ( rsvp_obj_header -> class_num > 128 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ( ( rsvp_obj_header -> class_num ) & 0x40 ) ? \"and<S2SV_blank>forward\" : \"silently\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>if<S2SV_blank>unknown],<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( rsvp_ctype_values , \"Unknown\" , ( ( rsvp_obj_header -> class_num ) << 8 ) + rsvp_obj_ctype ) , rsvp_obj_ctype , rsvp_obj_len ) ) ; if ( tlen < rsvp_obj_len ) { ND_PRINT ( ( ndo , \"%sERROR:<S2SV_blank>object<S2SV_blank>goes<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>objects<S2SV_blank>TLV\" , ident ) ) ; return - 1 ; } obj_tptr = tptr + sizeof ( struct rsvp_object_header ) ; obj_tlen = rsvp_obj_len - sizeof ( struct rsvp_object_header ) ; if ( ! ND_TTEST2 ( * tptr , rsvp_obj_len ) ) return - 1 ; hexdump = FALSE ; switch ( rsvp_obj_header -> class_num ) { case RSVP_OBJ_SESSION : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + 5 ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>DestAddress:<S2SV_blank>%s,<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>0x%02x\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + sizeof ( struct in6_addr ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[0x%02x],<S2SV_blank>DestPort<S2SV_blank>%u\" , ident , * ( obj_tptr + sizeof ( struct in6_addr ) + 1 ) , EXTRACT_16BITS ( obj_tptr + sizeof ( struct in6_addr ) + 2 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 36 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ip6addr_string ( ndo , obj_tptr + 20 ) ) ) ; obj_tlen -= 36 ; obj_tptr += 36 ; break ; case RSVP_CTYPE_14 : if ( obj_tlen < 26 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%08x,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ip6addr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 26 ; obj_tptr += 26 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>P2MP<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : case RSVP_CTYPE_UNI_IPV4 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>EndPoint:<S2SV_blank>%s,<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>0x%04x,<S2SV_blank>Extended<S2SV_blank>Tunnel<S2SV_blank>ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ipaddr_string ( ndo , obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CONFIRM : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Receiver<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_NOTIFY_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < sizeof ( struct in_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in_addr ) ; obj_tptr += sizeof ( struct in_addr ) ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < sizeof ( struct in6_addr ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Notify<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= sizeof ( struct in6_addr ) ; obj_tptr += sizeof ( struct in6_addr ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SUGGESTED_LABEL : case RSVP_OBJ_UPSTREAM_LABEL : case RSVP_OBJ_RECOVERY_LABEL : case RSVP_OBJ_LABEL : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Generalized<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Waveband<S2SV_blank>ID:<S2SV_blank>%u%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>Label:<S2SV_blank>%u,<S2SV_blank>Stop<S2SV_blank>Label:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_STYLE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Reservation<S2SV_blank>Style:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]\" , ident , tok2str ( rsvp_resstyle_values , \"Unknown\" , EXTRACT_24BITS ( obj_tptr + 1 ) ) , * ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TEMPLATE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_REQ : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; case RSVP_CTYPE_2 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \",%s<S2SV_blank>merge<S2SV_blank>capability\" , ( ( * ( obj_tptr + 4 ) ) & 0x80 ) ? \"no\" : \"\" ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 4 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 6 ) ) & 0xfff ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Maximum<S2SV_blank>VPI/VCI:<S2SV_blank>%u/%u\" , ident , ( EXTRACT_16BITS ( obj_tptr + 8 ) ) & 0xfff , ( EXTRACT_16BITS ( obj_tptr + 10 ) ) & 0xfff ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>L3<S2SV_blank>Protocol<S2SV_blank>ID:<S2SV_blank>%s\" , ident , tok2str ( ethertype_values , \"Unknown<S2SV_blank>Protocol<S2SV_blank>(0x%04x)\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Minimum/Maximum<S2SV_blank>DLCI:<S2SV_blank>%u/%u,<S2SV_blank>%s%s<S2SV_blank>bit<S2SV_blank>DLCI\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0x7fffff , ( EXTRACT_32BITS ( obj_tptr + 8 ) ) & 0x7fffff , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 0 ) ? \"10\" : \"\" , ( ( ( EXTRACT_16BITS ( obj_tptr + 4 ) >> 7 ) & 3 ) == 2 ) ? \"23\" : \"\" ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; case RSVP_CTYPE_4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>LSP<S2SV_blank>Encoding<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , tok2str ( gmpls_encoding_values , \"Unknown\" , * obj_tptr ) , * obj_tptr ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Switching<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Payload<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%04x)\" , ident , tok2str ( gmpls_switch_cap_values , \"Unknown\" , * ( obj_tptr + 1 ) ) , * ( obj_tptr + 1 ) , tok2str ( gmpls_payload_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RRO : case RSVP_OBJ_ERO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : while ( obj_tlen >= 4 ) { u_char length ; ND_TCHECK2 ( * obj_tptr , 4 ) ; length = * ( obj_tptr + 1 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_xro_values , \"Unknown<S2SV_blank>%u\" , RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) , length ) ) ; if ( length == 0 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>ERROR:<S2SV_blank>zero<S2SV_blank>length<S2SV_blank>ERO<S2SV_blank>subtype\" , ident ) ) ; break ; } switch ( RSVP_OBJ_XRO_MASK_SUBOBJ ( * obj_tptr ) ) { u_char prefix_length ; case RSVP_OBJ_XRO_IPV4 : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; prefix_length = * ( obj_tptr + 6 ) ; if ( prefix_length != 32 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>Prefix<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>32\" , prefix_length ) ) ; goto invalid ; } ND_PRINT ( ( ndo , \",<S2SV_blank>%s,<S2SV_blank>%s/%u,<S2SV_blank>Flags:<S2SV_blank>[%s]\" , RSVP_OBJ_XRO_MASK_LOOSE ( * obj_tptr ) ? \"Loose\" : \"Strict\" , ipaddr_string ( ndo , obj_tptr + 2 ) , * ( obj_tptr + 6 ) , bittok2str ( rsvp_obj_rro_flag_values , \"none\" , * ( obj_tptr + 7 ) ) ) ) ; break ; case RSVP_OBJ_XRO_LABEL : if ( length != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>ERROR:<S2SV_blank>length<S2SV_blank>!=<S2SV_blank>8\" ) ) ; goto invalid ; } ND_TCHECK2 ( * obj_tptr , 8 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x),<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%u\" , bittok2str ( rsvp_obj_rro_label_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) , tok2str ( rsvp_ctype_values , \"Unknown\" , * ( obj_tptr + 3 ) + 256 * RSVP_OBJ_RRO ) , * ( obj_tptr + 3 ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; } obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_HELLO : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Instance:<S2SV_blank>0x%08x,<S2SV_blank>Destination<S2SV_blank>Instance:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RESTART_CAPABILITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Restart<S2SV_blank><S2SV_blank>Time:<S2SV_blank>%ums,<S2SV_blank>Recovery<S2SV_blank>Time:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SESSION_ATTRIBUTE : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 4 ) return - 1 ; namelen = * ( obj_tptr + 3 ) ; if ( obj_tlen < 4 + namelen ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Session<S2SV_blank>Name:<S2SV_blank>\" , ident ) ) ; for ( i = 0 ; i < namelen ; i ++ ) safeputchar ( ndo , * ( obj_tptr + 4 + i ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Flags:<S2SV_blank>[%s]<S2SV_blank>(%#x)\" , ident , ( int ) * obj_tptr , ( int ) * ( obj_tptr + 1 ) , bittok2str ( rsvp_session_attribute_flag_values , \"none\" , * ( obj_tptr + 2 ) ) , * ( obj_tptr + 2 ) ) ) ; obj_tlen -= 4 + * ( obj_tptr + 3 ) ; obj_tptr += 4 + * ( obj_tptr + 3 ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_GENERALIZED_UNI : switch ( rsvp_obj_ctype ) { int subobj_type , af , subobj_len , total_subobj_len ; case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; total_subobj_len = obj_tlen ; while ( total_subobj_len > 0 ) { subobj_len = EXTRACT_16BITS ( obj_tptr ) ; subobj_type = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) >> 8 ; af = ( EXTRACT_16BITS ( obj_tptr + 2 ) ) & 0x00FF ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subobject<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>AF:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_generalized_uni_values , \"Unknown\" , subobj_type ) , subobj_type , tok2str ( af_values , \"Unknown\" , af ) , af , subobj_len ) ) ; if ( subobj_len == 0 ) goto invalid ; switch ( subobj_type ) { case RSVP_GEN_UNI_SUBOBJ_SOURCE_TNA_ADDRESS : case RSVP_GEN_UNI_SUBOBJ_DESTINATION_TNA_ADDRESS : switch ( af ) { case AFNUM_INET : if ( subobj_len < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv4<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_INET6 : if ( subobj_len < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>UNI<S2SV_blank>IPv6<S2SV_blank>TNA<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr + 4 ) ) ) ; break ; case AFNUM_NSAP : if ( subobj_len ) { hexdump = TRUE ; } break ; } break ; case RSVP_GEN_UNI_SUBOBJ_DIVERSITY : if ( subobj_len ) { hexdump = TRUE ; } break ; case RSVP_GEN_UNI_SUBOBJ_EGRESS_LABEL : if ( subobj_len < 16 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>U-bit:<S2SV_blank>%x,<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u,<S2SV_blank>Logical<S2SV_blank>port<S2SV_blank>id:<S2SV_blank>%u,<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 31 ) , ( ( EXTRACT_32BITS ( obj_tptr + 4 ) ) & 0xFF ) , EXTRACT_32BITS ( obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 12 ) ) ) ; break ; case RSVP_GEN_UNI_SUBOBJ_SERVICE_LEVEL : if ( subobj_len < 8 ) { return - 1 ; } ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Service<S2SV_blank>level:<S2SV_blank>%u\" , ident , ( EXTRACT_32BITS ( obj_tptr + 4 ) ) >> 24 ) ) ; break ; default : hexdump = TRUE ; break ; } total_subobj_len -= subobj_len ; obj_tptr += subobj_len ; obj_tlen += subobj_len ; } if ( total_subobj_len ) { hexdump = TRUE ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_RSVP_HOP : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; if ( obj_tlen ) hexdump = TRUE ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Previous/Next<S2SV_blank>Interface:<S2SV_blank>%s,<S2SV_blank>Logical<S2SV_blank>Interface<S2SV_blank>Handle:<S2SV_blank>0x%08x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 16 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; hexdump = TRUE ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_TIME_VALUES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Refresh<S2SV_blank>Period:<S2SV_blank>%ums\" , ident , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SENDER_TSPEC : case RSVP_OBJ_ADSPEC : case RSVP_OBJ_FLOWSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_2 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Msg-Version:<S2SV_blank>%u,<S2SV_blank>length:<S2SV_blank>%u\" , ident , ( * obj_tptr & 0xf0 ) >> 4 , EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( obj_tlen >= 4 ) { intserv_serv_tlen = EXTRACT_16BITS ( obj_tptr + 2 ) << 2 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Service<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>break<S2SV_blank>bit<S2SV_blank>%s<S2SV_blank>set,<S2SV_blank>Service<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_intserv_service_type_values , \"unknown\" , * ( obj_tptr ) ) , * ( obj_tptr ) , ( * ( obj_tptr + 1 ) & 0x80 ) ? \"\" : \"not\" , intserv_serv_tlen ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; while ( intserv_serv_tlen >= 4 ) { processed = rsvp_intserv_print ( ndo , obj_tptr , obj_tlen ) ; if ( processed == 0 ) break ; obj_tlen -= processed ; intserv_serv_tlen -= processed ; obj_tptr += processed ; } } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FILTERSPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Source<S2SV_blank>Port:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_3 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flow<S2SV_blank>Label:<S2SV_blank>%u\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_24BITS ( obj_tptr + 17 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_TUNNEL_IPV6 : if ( obj_tlen < 20 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) ) ) ; obj_tlen -= 20 ; obj_tptr += 20 ; break ; case RSVP_CTYPE_13 : if ( obj_tlen < 40 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ip6addr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 18 ) , ident , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_16BITS ( obj_tptr + 38 ) ) ) ; obj_tlen -= 40 ; obj_tptr += 40 ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Source<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP-ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_12 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Tunnel<S2SV_blank>Sender<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>LSP<S2SV_blank>ID:<S2SV_blank>0x%04x\" \"%s<S2SV_blank><S2SV_blank>Sub-Group<S2SV_blank>Originator<S2SV_blank>ID:<S2SV_blank>%s,<S2SV_blank>Sub-Group<S2SV_blank>ID:<S2SV_blank>0x%04x\" , ident , ipaddr_string ( ndo , obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 6 ) , ident , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_16BITS ( obj_tptr + 12 ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_FASTREROUTE : obj_ptr . rsvp_obj_frr = ( const struct rsvp_obj_frr_t * ) obj_tptr ; <S2SV_StartBug> bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ; <S2SV_EndBug> <S2SV_StartBug> switch ( rsvp_obj_ctype ) { <S2SV_EndBug> case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_frr_t ) ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include-any:<S2SV_blank>0x%08x,<S2SV_blank>Exclude-any:<S2SV_blank>0x%08x,<S2SV_blank>Include-all:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_all ) ) ) ; obj_tlen -= sizeof ( struct rsvp_obj_frr_t ) ; obj_tptr += sizeof ( struct rsvp_obj_frr_t ) ; break ; case RSVP_CTYPE_TUNNEL_IPV4 : if ( obj_tlen < 16 ) return - 1 ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Setup<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Holding<S2SV_blank>Priority:<S2SV_blank>%u,<S2SV_blank>Hop-limit:<S2SV_blank>%u,<S2SV_blank>Bandwidth:<S2SV_blank>%.10g<S2SV_blank>Mbps\" , <S2SV_EndBug> ident , ( int ) obj_ptr . rsvp_obj_frr -> setup_prio , ( int ) obj_ptr . rsvp_obj_frr -> hold_prio , ( int ) obj_ptr . rsvp_obj_frr -> hop_limit , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Include<S2SV_blank>Colors:<S2SV_blank>0x%08x,<S2SV_blank>Exclude<S2SV_blank>Colors:<S2SV_blank>0x%08x\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> include_any ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> exclude_any ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_DETOUR : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_TUNNEL_IPV4 : while ( obj_tlen >= 8 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>PLR-ID:<S2SV_blank>%s,<S2SV_blank>Avoid-Node-ID:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) , ipaddr_string ( ndo , obj_tptr + 4 ) ) ) ; obj_tlen -= 8 ; obj_tptr += 8 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_CLASSTYPE : case RSVP_OBJ_CLASSTYPE_OLD : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>CT:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr ) & 0x7 ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ERROR_SPEC : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_3 : case RSVP_CTYPE_IPV4 : if ( obj_tlen < 8 ) return - 1 ; error_code = * ( obj_tptr + 5 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 6 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ipaddr_string ( ndo , obj_tptr ) , * ( obj_tptr + 4 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE : case RSVP_OBJ_ERROR_SPEC_CODE_DIFFSERV_TE_OLD : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_diffserv_te_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>Unknown<S2SV_blank>Error<S2SV_blank>Value<S2SV_blank>(%u)\" , error_value ) ) ; break ; } obj_tlen -= 8 ; obj_tptr += 8 ; break ; case RSVP_CTYPE_4 : case RSVP_CTYPE_IPV6 : if ( obj_tlen < 20 ) return - 1 ; error_code = * ( obj_tptr + 17 ) ; error_value = EXTRACT_16BITS ( obj_tptr + 18 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Node<S2SV_blank>Address:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[0x%02x]%s<S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s<S2SV_blank>(%u)\" , ident , ip6addr_string ( ndo , obj_tptr ) , * ( obj_tptr + 16 ) , ident , tok2str ( rsvp_obj_error_code_values , \"unknown\" , error_code ) , error_code ) ) ; switch ( error_code ) { case RSVP_OBJ_ERROR_SPEC_CODE_ROUTING : ND_PRINT ( ( ndo , \",<S2SV_blank>Error<S2SV_blank>Value:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( rsvp_obj_error_code_routing_values , \"unknown\" , error_value ) , error_value ) ) ; break ; default : break ; } obj_tlen -= 20 ; obj_tptr += 20 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_PROPERTIES : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; padbytes = EXTRACT_16BITS ( obj_tptr + 2 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>TLV<S2SV_blank>count:<S2SV_blank>%u,<S2SV_blank>padding<S2SV_blank>bytes:<S2SV_blank>%u\" , ident , EXTRACT_16BITS ( obj_tptr ) , padbytes ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 2 + padbytes ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(0x%02x),<S2SV_blank>length:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_prop_tlv_values , \"unknown\" , * obj_tptr ) , * obj_tptr , * ( obj_tptr + 1 ) ) ) ; if ( obj_tlen < * ( obj_tptr + 1 ) ) return - 1 ; if ( * ( obj_tptr + 1 ) < 2 ) return - 1 ; print_unknown_data ( ndo , obj_tptr + 2 , \"\\\\n\\\\t\\\\t\" , * ( obj_tptr + 1 ) - 2 ) ; obj_tlen -= * ( obj_tptr + 1 ) ; obj_tptr += * ( obj_tptr + 1 ) ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_MESSAGE_ID : case RSVP_OBJ_MESSAGE_ID_ACK : case RSVP_OBJ_MESSAGE_ID_LIST : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : case RSVP_CTYPE_2 : if ( obj_tlen < 8 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[0x%02x],<S2SV_blank>epoch:<S2SV_blank>%u\" , ident , * obj_tptr , EXTRACT_24BITS ( obj_tptr + 1 ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message-ID<S2SV_blank>0x%08x<S2SV_blank>(%u)\" , ident , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_INTEGRITY : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_integrity_t ) ) return - 1 ; obj_ptr . rsvp_obj_integrity = ( const struct rsvp_obj_integrity_t * ) obj_tptr ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Key-ID<S2SV_blank>0x%04x%08x,<S2SV_blank>Sequence<S2SV_blank>0x%08x%08x,<S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , EXTRACT_16BITS ( obj_ptr . rsvp_obj_integrity -> key_id ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> key_id + 2 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> sequence + 4 ) , bittok2str ( rsvp_obj_integrity_flag_values , \"none\" , obj_ptr . rsvp_obj_integrity -> flags ) ) ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>MD5-sum<S2SV_blank>0x%08x%08x%08x%08x<S2SV_blank>\" , ident , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 4 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 8 ) , EXTRACT_32BITS ( obj_ptr . rsvp_obj_integrity -> digest + 12 ) ) ) ; sigcheck = signature_verify ( ndo , pptr , plen , obj_ptr . rsvp_obj_integrity -> digest , rsvp_clear_checksum , rsvp_com_header ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(%s)\" , tok2str ( signature_check_values , \"Unknown\" , sigcheck ) ) ) ; obj_tlen += sizeof ( struct rsvp_obj_integrity_t ) ; obj_tptr += sizeof ( struct rsvp_obj_integrity_t ) ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_ADMIN_STATUS : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Flags<S2SV_blank>[%s]\" , ident , bittok2str ( rsvp_obj_admin_status_flag_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_LABEL_SET : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < 4 ) return - 1 ; action = ( EXTRACT_16BITS ( obj_tptr ) >> 8 ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Action:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Label<S2SV_blank>type:<S2SV_blank>%u\" , ident , tok2str ( rsvp_obj_label_set_action_values , \"Unknown\" , action ) , action , ( ( EXTRACT_32BITS ( obj_tptr ) & 0x7F ) ) ) ) ; switch ( action ) { case LABEL_SET_INCLUSIVE_RANGE : case LABEL_SET_EXCLUSIVE_RANGE : if ( obj_tlen < 12 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Start<S2SV_blank>range:<S2SV_blank>%u,<S2SV_blank>End<S2SV_blank>range:<S2SV_blank>%u\" , ident , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; obj_tlen -= 12 ; obj_tptr += 12 ; break ; default : obj_tlen -= 4 ; obj_tptr += 4 ; subchannel = 1 ; while ( obj_tlen >= 4 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Subchannel<S2SV_blank>#%u:<S2SV_blank>%u\" , ident , subchannel , EXTRACT_32BITS ( obj_tptr ) ) ) ; obj_tptr += 4 ; obj_tlen -= 4 ; subchannel ++ ; } break ; } break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_S2L : switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_IPV4 : if ( obj_tlen < 4 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ipaddr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 4 ; obj_tptr += 4 ; break ; case RSVP_CTYPE_IPV6 : if ( obj_tlen < 16 ) return - 1 ; ND_PRINT ( ( ndo , \"%s<S2SV_blank><S2SV_blank>Sub-LSP<S2SV_blank>destination<S2SV_blank>address:<S2SV_blank>%s\" , ident , ip6addr_string ( ndo , obj_tptr ) ) ) ; obj_tlen -= 16 ; obj_tptr += 16 ; break ; default : hexdump = TRUE ; } break ; case RSVP_OBJ_SCOPE : case RSVP_OBJ_POLICY_DATA : case RSVP_OBJ_ACCEPT_LABEL_SET : case RSVP_OBJ_PROTECTION : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 || hexdump == TRUE ) print_unknown_data ( ndo , tptr + sizeof ( struct rsvp_object_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , rsvp_obj_len - sizeof ( struct rsvp_object_header ) ) ; tptr += rsvp_obj_len ; tlen -= rsvp_obj_len ; } return 0 ; invalid : ND_PRINT ( ( ndo , \"%s\" , istr ) ) ; return - 1 ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) obj_tptr ; switch ( rsvp_obj_ctype ) { case RSVP_CTYPE_1 : if ( obj_tlen < sizeof ( struct rsvp_obj_frr_t ) ) return - 1 ; <S2SV_ModStart> bandwidth ) ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> - 1 ; bw . i = EXTRACT_32BITS ( obj_ptr . rsvp_obj_frr -> bandwidth ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int mISDN_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sk_buff * skb ; <S2SV_StartBug> struct sock * sk = sock -> sk ; <S2SV_EndBug> struct sockaddr_mISDN * maddr ; int copied , err ; if ( * debug & DEBUG_SOCKET ) printk ( KERN_DEBUG \"%s:<S2SV_blank>len<S2SV_blank>%d,<S2SV_blank>flags<S2SV_blank>%x<S2SV_blank>ch.nr<S2SV_blank>%d,<S2SV_blank>proto<S2SV_blank>%x\\\\n\" , __func__ , ( int ) len , flags , _pms ( sk ) -> ch . nr , sk -> sk_protocol ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; if ( sk -> sk_state == MISDN_CLOSED ) return 0 ; skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & err ) ; if ( ! skb ) return err ; <S2SV_StartBug> if ( msg -> msg_namelen >= sizeof ( struct sockaddr_mISDN ) ) { <S2SV_EndBug> msg -> msg_namelen = sizeof ( struct sockaddr_mISDN ) ; maddr = ( struct sockaddr_mISDN * ) msg -> msg_name ; maddr -> family = AF_ISDN ; maddr -> dev = _pms ( sk ) -> dev -> id ; if ( ( sk -> sk_protocol == ISDN_P_LAPD_TE ) || ( sk -> sk_protocol == ISDN_P_LAPD_NT ) ) { maddr -> channel = ( mISDN_HEAD_ID ( skb ) >> 16 ) & 0xff ; maddr -> tei = ( mISDN_HEAD_ID ( skb ) >> 8 ) & 0xff ; maddr -> sapi = mISDN_HEAD_ID ( skb ) & 0xff ; } else { maddr -> channel = _pms ( sk ) -> ch . nr ; maddr -> sapi = _pms ( sk ) -> ch . addr & 0xFF ; maddr -> tei = ( _pms ( sk ) -> ch . addr >> 8 ) & 0xFF ; } <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> if ( msg -> msg_namelen ) <S2SV_EndBug> printk ( KERN_WARNING \"%s:<S2SV_blank>too<S2SV_blank>small<S2SV_blank>namelen<S2SV_blank>%d\\\\n\" , __func__ , msg -> msg_namelen ) ; msg -> msg_namelen = 0 ; } copied = skb -> len + MISDN_HEADER_LEN ; if ( len < copied ) { if ( flags & MSG_PEEK ) atomic_dec ( & skb -> users ) ; else skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - ENOSPC ; } memcpy ( skb_push ( skb , MISDN_HEADER_LEN ) , mISDN_HEAD_P ( skb ) , MISDN_HEADER_LEN ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; mISDN_sock_cmsg ( sk , msg , skb ) ; skb_free_datagram ( sk , skb ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock -> sk <S2SV_ModEnd> ; int copied <S2SV_ModStart> ( msg -> msg_name ) { struct sockaddr_mISDN * maddr = <S2SV_ModEnd> msg -> msg_name <S2SV_ModStart> 0xFF ; } <S2SV_ModEnd> msg -> msg_namelen <S2SV_ModStart> msg -> msg_namelen = sizeof ( * maddr ) <S2SV_ModEnd> ; } copied\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum poly_in ( PG_FUNCTION_ARGS ) { char * str = PG_GETARG_CSTRING ( 0 ) ; POLYGON * poly ; int npts ; int size ; <S2SV_StartBug> int isopen ; <S2SV_EndBug> char * s ; if ( ( npts = pair_count ( str , ',' ) ) <= 0 ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"invalid<S2SV_blank>input<S2SV_blank>syntax<S2SV_blank>for<S2SV_blank>type<S2SV_blank>polygon:<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ) ) ; <S2SV_StartBug> size = offsetof ( POLYGON , p [ 0 ] ) + sizeof ( poly -> p [ 0 ] ) * npts ; <S2SV_EndBug> poly = ( POLYGON * ) palloc0 ( size ) ; SET_VARSIZE ( poly , size ) ; poly -> npts = npts ; if ( ( ! path_decode ( FALSE , npts , str , & isopen , & s , & ( poly -> p [ 0 ] ) ) ) || ( * s != '\\\\0' ) ) ereport ( ERROR , ( errcode ( ERRCODE_INVALID_TEXT_REPRESENTATION ) , errmsg ( \"invalid<S2SV_blank>input<S2SV_blank>syntax<S2SV_blank>for<S2SV_blank>type<S2SV_blank>polygon:<S2SV_blank>\\\\\"%s\\\\\"\" , str ) ) ) ; make_bound_box ( poly ) ; PG_RETURN_POLYGON_P ( poly ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ; int base_size ; int <S2SV_ModStart> ) ) ; base_size = sizeof ( poly -> p [ 0 ] ) * npts ; <S2SV_ModStart> ] ) + base_size ; if ( base_size / npts != <S2SV_ModStart> 0 ] ) || size <= base_size ) ereport ( ERROR , ( errcode ( ERRCODE_PROGRAM_LIMIT_EXCEEDED ) , errmsg ( \"too<S2SV_blank>many<S2SV_blank>points<S2SV_blank>requested\" ) ) ) <S2SV_ModEnd> ; poly =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static inline key_ref_t __key_update ( key_ref_t key_ref , struct key_preparsed_payload * prep ) { struct key * key = key_ref_to_ptr ( key_ref ) ; int ret ; ret = key_permission ( key_ref , KEY_NEED_WRITE ) ; if ( ret < 0 ) goto error ; ret = - EEXIST ; if ( ! key -> type -> update ) goto error ; down_write ( & key -> sem ) ; ret = key -> type -> update ( key , prep ) ; if ( ret == 0 ) <S2SV_StartBug> clear_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ; <S2SV_EndBug> up_write ( & key -> sem ) ; if ( ret < 0 ) goto error ; out : return key_ref ; error : key_put ( key ) ; key_ref = ERR_PTR ( ret ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == 0 ) mark_key_instantiated ( key , 0 <S2SV_ModEnd> ) ; up_write\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 int inet6_sk_rebuild_header ( struct sock * sk ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct dst_entry * dst ; dst = __sk_dst_check ( sk , np -> dst_cookie ) ; if ( ! dst ) { struct inet_sock * inet = inet_sk ( sk ) ; struct in6_addr * final_p , final ; struct flowi6 fl6 ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_proto = sk -> sk_protocol ; fl6 . daddr = sk -> sk_v6_daddr ; fl6 . saddr = np -> saddr ; fl6 . flowlabel = np -> flow_label ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . flowi6_mark = sk -> sk_mark ; fl6 . fl6_dport = inet -> inet_dport ; fl6 . fl6_sport = inet -> inet_sport ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , np -> opt , & final ) ; <S2SV_EndBug> dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) { sk -> sk_route_caps = 0 ; sk -> sk_err_soft = - PTR_ERR ( dst ) ; return PTR_ERR ( dst ) ; } __ip6_dst_store ( sk , dst , NULL , NULL ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; rcu_read_lock ( ) ; <S2SV_ModStart> & fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt ) , & final ) ; rcu_read_unlock ( <S2SV_ModEnd> ) ; dst\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13029\n\n```\nCWE-125 static int print_bacp_config_options ( netdissect_options * ndo , const u_char * p , int length ) { int len , opt ; if ( length < 2 ) return 0 ; ND_TCHECK2 ( * p , 2 ) ; len = p [ 1 ] ; opt = p [ 0 ] ; if ( length < len ) return 0 ; if ( len < 2 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>>=<S2SV_blank>2)\" , tok2str ( bacconfopts_values , \"Unknown\" , opt ) , opt , len ) ) ; return 0 ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>(0x%02x),<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( bacconfopts_values , \"Unknown\" , opt ) , opt , len ) ) ; switch ( opt ) { case BACPOPT_FPEER : if ( len != 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(length<S2SV_blank>bogus,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>=<S2SV_blank>6)\" ) ) ; return len ; } <S2SV_StartBug> ND_TCHECK2 ( * ( p + 2 ) , 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \":<S2SV_blank>Magic-Num<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( p + 2 ) ) ) ; break ; default : if ( ndo -> ndo_vflag < 2 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , & p [ 2 ] , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len - 2 ) ; return len ; trunc : ND_PRINT ( ( ndo , \"[|bacp]\" ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ; } ND_TCHECK_32BITS <S2SV_ModEnd> ( p + <S2SV_ModStart> p + 2 <S2SV_ModEnd> ) ; ND_PRINT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_alt_ref_frame_stats ( VP9_COMP * cpi ) { RATE_CONTROL * const rc = & cpi -> rc ; rc -> frames_since_golden = 0 ; <S2SV_StartBug> # if CONFIG_MULTIPLE_ARF <S2SV_EndBug> if ( ! cpi -> multi_arf_enabled ) # endif rc -> source_alt_ref_pending = 0 ; rc -> source_alt_ref_active = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> rc -> source_alt_ref_pending\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0311\n\n```\nCWE-000 static int translate_desc ( struct vhost_dev * dev , u64 addr , u32 len , struct iovec iov [ ] , int iov_size ) { const struct vhost_memory_region * reg ; struct vhost_memory * mem ; struct iovec * _iov ; u64 s = 0 ; int ret = 0 ; rcu_read_lock ( ) ; mem = rcu_dereference ( dev -> memory ) ; while ( ( u64 ) len > s ) { u64 size ; if ( unlikely ( ret >= iov_size ) ) { ret = - ENOBUFS ; break ; } reg = find_region ( mem , addr , len ) ; if ( unlikely ( ! reg ) ) { ret = - EFAULT ; break ; } _iov = iov + ret ; size = reg -> memory_size - addr + reg -> guest_phys_addr ; <S2SV_StartBug> _iov -> iov_len = min ( ( u64 ) len , size ) ; <S2SV_EndBug> _iov -> iov_base = ( void __user * ) ( unsigned long ) ( reg -> userspace_addr + addr - reg -> guest_phys_addr ) ; s += size ; addr += size ; ++ ret ; } rcu_read_unlock ( ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u64 ) len - s\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int mISDN_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sk_buff * skb ; <S2SV_StartBug> struct sock * sk = sock -> sk ; <S2SV_EndBug> struct sockaddr_mISDN * maddr ; int copied , err ; if ( * debug & DEBUG_SOCKET ) printk ( KERN_DEBUG \"%s:<S2SV_blank>len<S2SV_blank>%d,<S2SV_blank>flags<S2SV_blank>%x<S2SV_blank>ch.nr<S2SV_blank>%d,<S2SV_blank>proto<S2SV_blank>%x\\\\n\" , __func__ , ( int ) len , flags , _pms ( sk ) -> ch . nr , sk -> sk_protocol ) ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; if ( sk -> sk_state == MISDN_CLOSED ) return 0 ; skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & err ) ; if ( ! skb ) return err ; <S2SV_StartBug> if ( msg -> msg_namelen >= sizeof ( struct sockaddr_mISDN ) ) { <S2SV_EndBug> msg -> msg_namelen = sizeof ( struct sockaddr_mISDN ) ; maddr = ( struct sockaddr_mISDN * ) msg -> msg_name ; maddr -> family = AF_ISDN ; maddr -> dev = _pms ( sk ) -> dev -> id ; if ( ( sk -> sk_protocol == ISDN_P_LAPD_TE ) || ( sk -> sk_protocol == ISDN_P_LAPD_NT ) ) { maddr -> channel = ( mISDN_HEAD_ID ( skb ) >> 16 ) & 0xff ; maddr -> tei = ( mISDN_HEAD_ID ( skb ) >> 8 ) & 0xff ; maddr -> sapi = mISDN_HEAD_ID ( skb ) & 0xff ; } else { maddr -> channel = _pms ( sk ) -> ch . nr ; maddr -> sapi = _pms ( sk ) -> ch . addr & 0xFF ; maddr -> tei = ( _pms ( sk ) -> ch . addr >> 8 ) & 0xFF ; } <S2SV_StartBug> } else { <S2SV_EndBug> <S2SV_StartBug> if ( msg -> msg_namelen ) <S2SV_EndBug> printk ( KERN_WARNING \"%s:<S2SV_blank>too<S2SV_blank>small<S2SV_blank>namelen<S2SV_blank>%d\\\\n\" , __func__ , msg -> msg_namelen ) ; msg -> msg_namelen = 0 ; } copied = skb -> len + MISDN_HEADER_LEN ; if ( len < copied ) { if ( flags & MSG_PEEK ) atomic_dec ( & skb -> users ) ; else skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - ENOSPC ; } memcpy ( skb_push ( skb , MISDN_HEADER_LEN ) , mISDN_HEAD_P ( skb ) , MISDN_HEADER_LEN ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; mISDN_sock_cmsg ( sk , msg , skb ) ; skb_free_datagram ( sk , skb ) ; return err ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock -> sk <S2SV_ModEnd> ; int copied <S2SV_ModStart> ( msg -> msg_name ) { struct sockaddr_mISDN * maddr = <S2SV_ModEnd> msg -> msg_name <S2SV_ModStart> 0xFF ; } <S2SV_ModEnd> msg -> msg_namelen <S2SV_ModStart> msg -> msg_namelen = sizeof ( * maddr ) <S2SV_ModEnd> ; } copied\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 int udp_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * inet = inet_sk ( sk ) ; struct sockaddr_in * sin = ( struct sockaddr_in * ) msg -> msg_name ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; int is_udplite = IS_UDPLITE ( sk ) ; <S2SV_StartBug> bool slow ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( * sin ) ; if ( flags & MSG_ERRQUEUE ) return ip_recv_error ( sk , msg , len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { if ( udp_lib_checksum_complete ( skb ) ) goto csum_copy_err ; } if ( skb_csum_unnecessary ( skb ) ) err = skb_copy_datagram_iovec ( skb , sizeof ( struct udphdr ) , msg -> msg_iov , copied ) ; else { err = skb_copy_and_csum_datagram_iovec ( skb , sizeof ( struct udphdr ) , msg -> msg_iov ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udp_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( sin ) { sin -> sin_family = AF_INET ; sin -> sin_port = udp_hdr ( skb ) -> source ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } unlock_sock_fast ( sk , slow ) ; if ( noblock ) return - EAGAIN ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bool slow <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) ; * addr_len = sizeof ( * sin ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13036\n\n```\nCWE-125 static int ospf6_decode_v3 ( netdissect_options * ndo , register const struct ospf6hdr * op , register const u_char * dataend ) { register const rtrid_t * ap ; register const struct lsr6 * lsrp ; register const struct lsa6_hdr * lshp ; register const struct lsa6 * lsap ; register int i ; switch ( op -> ospf6_type ) { case OSPF_TYPE_HELLO : { <S2SV_StartBug> register const struct hello6 * hellop = ( const struct hello6 * ) ( ( const uint8_t * ) op + OSPF6HDR_LEN ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\tOptions<S2SV_blank>[%s]\" , bittok2str ( ospf6_option_values , \"none\" , EXTRACT_32BITS ( & hellop -> hello_options ) ) ) ) ; ND_TCHECK ( hellop -> hello_deadint ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Hello<S2SV_blank>Timer<S2SV_blank>%us,<S2SV_blank>Dead<S2SV_blank>Timer<S2SV_blank>%us,<S2SV_blank>Interface-ID<S2SV_blank>%s,<S2SV_blank>Priority<S2SV_blank>%u\" , EXTRACT_16BITS ( & hellop -> hello_helloint ) , EXTRACT_16BITS ( & hellop -> hello_deadint ) , ipaddr_string ( ndo , & hellop -> hello_ifid ) , hellop -> hello_priority ) ) ; ND_TCHECK ( hellop -> hello_dr ) ; if ( EXTRACT_32BITS ( & hellop -> hello_dr ) != 0 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Designated<S2SV_blank>Router<S2SV_blank>%s\" , ipaddr_string ( ndo , & hellop -> hello_dr ) ) ) ; ND_TCHECK ( hellop -> hello_bdr ) ; if ( EXTRACT_32BITS ( & hellop -> hello_bdr ) != 0 ) ND_PRINT ( ( ndo , \",<S2SV_blank>Backup<S2SV_blank>Designated<S2SV_blank>Router<S2SV_blank>%s\" , ipaddr_string ( ndo , & hellop -> hello_bdr ) ) ) ; if ( ndo -> ndo_vflag > 1 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Neighbor<S2SV_blank>List:\" ) ) ; ap = hellop -> hello_neighbor ; while ( ( const u_char * ) ap < dataend ) { ND_TCHECK ( * ap ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , ipaddr_string ( ndo , ap ) ) ) ; ++ ap ; } } break ; } case OSPF_TYPE_DD : { register const struct dd6 * ddp = ( const struct dd6 * ) ( ( const uint8_t * ) op + OSPF6HDR_LEN ) ; ND_TCHECK ( ddp -> db_options ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\tOptions<S2SV_blank>[%s]\" , bittok2str ( ospf6_option_values , \"none\" , EXTRACT_32BITS ( & ddp -> db_options ) ) ) ) ; ND_TCHECK ( ddp -> db_flags ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>DD<S2SV_blank>Flags<S2SV_blank>[%s]\" , bittok2str ( ospf6_dd_flag_values , \"none\" , ddp -> db_flags ) ) ) ; ND_TCHECK ( ddp -> db_seq ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>MTU<S2SV_blank>%u,<S2SV_blank>DD-Sequence<S2SV_blank>0x%08x\" , EXTRACT_16BITS ( & ddp -> db_mtu ) , EXTRACT_32BITS ( & ddp -> db_seq ) ) ) ; if ( ndo -> ndo_vflag > 1 ) { lshp = ddp -> db_lshdr ; while ( ( const u_char * ) lshp < dataend ) { if ( ospf6_print_lshdr ( ndo , lshp ++ , dataend ) ) goto trunc ; } } break ; } case OSPF_TYPE_LS_REQ : if ( ndo -> ndo_vflag > 1 ) { lsrp = ( const struct lsr6 * ) ( ( const uint8_t * ) op + OSPF6HDR_LEN ) ; while ( ( const u_char * ) lsrp < dataend ) { ND_TCHECK ( * lsrp ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Advertising<S2SV_blank>Router<S2SV_blank>%s\" , ipaddr_string ( ndo , & lsrp -> ls_router ) ) ) ; ospf6_print_ls_type ( ndo , EXTRACT_16BITS ( & lsrp -> ls_type ) , & lsrp -> ls_stateid ) ; ++ lsrp ; } } break ; case OSPF_TYPE_LS_UPDATE : if ( ndo -> ndo_vflag > 1 ) { register const struct lsu6 * lsup = ( const struct lsu6 * ) ( ( const uint8_t * ) op + OSPF6HDR_LEN ) ; ND_TCHECK ( lsup -> lsu_count ) ; i = EXTRACT_32BITS ( & lsup -> lsu_count ) ; lsap = lsup -> lsu_lsa ; while ( ( const u_char * ) lsap < dataend && i -- ) { if ( ospf6_print_lsa ( ndo , lsap , dataend ) ) goto trunc ; lsap = ( const struct lsa6 * ) ( ( const u_char * ) lsap + EXTRACT_16BITS ( & lsap -> ls_hdr . ls_length ) ) ; } } break ; case OSPF_TYPE_LS_ACK : if ( ndo -> ndo_vflag > 1 ) { lshp = ( const struct lsa6_hdr * ) ( ( const uint8_t * ) op + OSPF6HDR_LEN ) ; while ( ( const u_char * ) lshp < dataend ) { if ( ospf6_print_lshdr ( ndo , lshp ++ , dataend ) ) goto trunc ; } } break ; default : break ; } return ( 0 ) ; trunc : return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> op + OSPF6HDR_LEN ) ; ND_TCHECK_32BITS ( & hellop -> hello_options\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1541\n\n```\nCWE-20 static int zip_read_mac_metadata ( struct archive_read * a , struct archive_entry * entry , struct zip_entry * rsrc ) { struct zip * zip = ( struct zip * ) a -> format -> data ; unsigned char * metadata , * mp ; int64_t offset = archive_filter_bytes ( & a -> archive , 0 ) ; size_t remaining_bytes , metadata_bytes ; ssize_t hsize ; int ret = ARCHIVE_OK , eof ; switch ( rsrc -> compression ) { <S2SV_StartBug> case 0 : <S2SV_EndBug> # ifdef HAVE_ZLIB_H case 8 : # endif break ; default : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unsupported<S2SV_blank>ZIP<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(%s)\" , compression_name ( rsrc -> compression ) ) ; return ( ARCHIVE_WARN ) ; } if ( rsrc -> uncompressed_size > ( 4 * 1024 * 1024 ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Mac<S2SV_blank>metadata<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%jd<S2SV_blank>><S2SV_blank>4M<S2SV_blank>bytes\" , <S2SV_StartBug> ( intmax_t ) rsrc -> uncompressed_size ) ; <S2SV_EndBug> return ( ARCHIVE_WARN ) ; } metadata = malloc ( ( size_t ) rsrc -> uncompressed_size ) ; if ( metadata == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>Mac<S2SV_blank>metadata\" ) ; return ( ARCHIVE_FATAL ) ; } if ( offset < rsrc -> local_header_offset ) __archive_read_consume ( a , rsrc -> local_header_offset - offset ) ; else if ( offset != rsrc -> local_header_offset ) { __archive_read_seek ( a , rsrc -> local_header_offset , SEEK_SET ) ; } hsize = zip_get_local_file_header_size ( a , 0 ) ; __archive_read_consume ( a , hsize ) ; remaining_bytes = ( size_t ) rsrc -> compressed_size ; metadata_bytes = ( size_t ) rsrc -> uncompressed_size ; mp = metadata ; eof = 0 ; while ( ! eof && remaining_bytes ) { const unsigned char * p ; ssize_t bytes_avail ; size_t bytes_used ; p = __archive_read_ahead ( a , 1 , & bytes_avail ) ; if ( p == NULL ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Truncated<S2SV_blank>ZIP<S2SV_blank>file<S2SV_blank>header\" ) ; ret = ARCHIVE_WARN ; goto exit_mac_metadata ; } if ( ( size_t ) bytes_avail > remaining_bytes ) bytes_avail = remaining_bytes ; switch ( rsrc -> compression ) { case 0 : <S2SV_StartBug> memcpy ( mp , p , bytes_avail ) ; <S2SV_EndBug> bytes_used = ( size_t ) bytes_avail ; metadata_bytes -= bytes_used ; mp += bytes_used ; if ( metadata_bytes == 0 ) eof = 1 ; break ; # ifdef HAVE_ZLIB_H case 8 : { int r ; ret = zip_deflate_init ( a , zip ) ; if ( ret != ARCHIVE_OK ) goto exit_mac_metadata ; zip -> stream . next_in = ( Bytef * ) ( uintptr_t ) ( const void * ) p ; zip -> stream . avail_in = ( uInt ) bytes_avail ; zip -> stream . total_in = 0 ; zip -> stream . next_out = mp ; zip -> stream . avail_out = ( uInt ) metadata_bytes ; zip -> stream . total_out = 0 ; r = inflate ( & zip -> stream , 0 ) ; switch ( r ) { case Z_OK : break ; case Z_STREAM_END : eof = 1 ; break ; case Z_MEM_ERROR : archive_set_error ( & a -> archive , ENOMEM , \"Out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>ZIP<S2SV_blank>decompression\" ) ; ret = ARCHIVE_FATAL ; goto exit_mac_metadata ; default : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"ZIP<S2SV_blank>decompression<S2SV_blank>failed<S2SV_blank>(%d)\" , r ) ; ret = ARCHIVE_FATAL ; goto exit_mac_metadata ; } bytes_used = zip -> stream . total_in ; metadata_bytes -= zip -> stream . total_out ; mp += zip -> stream . total_out ; break ; } # endif default : bytes_used = 0 ; break ; } __archive_read_consume ( a , bytes_used ) ; remaining_bytes -= bytes_used ; } archive_entry_copy_mac_metadata ( entry , metadata , ( size_t ) rsrc -> uncompressed_size - metadata_bytes ) ; exit_mac_metadata : __archive_read_seek ( a , offset , SEEK_SET ) ; zip -> decompress_init = 0 ; free ( metadata ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case 0 : if ( rsrc -> uncompressed_size != rsrc -> compressed_size ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Malformed<S2SV_blank>OS<S2SV_blank>X<S2SV_blank>metadata<S2SV_blank>entry:<S2SV_blank>inconsistent<S2SV_blank>size\" ) ; return ( ARCHIVE_FATAL ) ; } <S2SV_ModStart> rsrc -> uncompressed_size ) ; return ( ARCHIVE_WARN ) ; } if ( rsrc -> compressed_size > ( 4 * 1024 * 1024 ) ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Mac<S2SV_blank>metadata<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%jd<S2SV_blank>><S2SV_blank>4M<S2SV_blank>bytes\" , ( intmax_t ) rsrc -> compressed_size <S2SV_ModStart> case 0 : if ( ( size_t ) bytes_avail > metadata_bytes ) bytes_avail = metadata_bytes ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_layer_contexts ( VP8_COMP * cpi ) { VP8_CONFIG * oxcf = & cpi -> oxcf ; if ( oxcf -> number_of_layers > 1 ) { unsigned int i ; double prev_layer_framerate = 0 ; assert ( oxcf -> number_of_layers <= VPX_TS_MAX_LAYERS ) ; <S2SV_StartBug> for ( i = 0 ; i < oxcf -> number_of_layers ; i ++ ) <S2SV_EndBug> { LAYER_CONTEXT * lc = & cpi -> layer_context [ i ] ; lc -> framerate = cpi -> ref_framerate / oxcf -> rate_decimator [ i ] ; lc -> target_bandwidth = oxcf -> target_bitrate [ i ] * 1000 ; lc -> starting_buffer_level = rescale ( ( int ) oxcf -> starting_buffer_level_in_ms , lc -> target_bandwidth , 1000 ) ; if ( oxcf -> optimal_buffer_level == 0 ) lc -> optimal_buffer_level = lc -> target_bandwidth / 8 ; else lc -> optimal_buffer_level = rescale ( ( int ) oxcf -> optimal_buffer_level_in_ms , lc -> target_bandwidth , 1000 ) ; if ( oxcf -> maximum_buffer_size == 0 ) lc -> maximum_buffer_size = lc -> target_bandwidth / 8 ; else lc -> maximum_buffer_size = rescale ( ( int ) oxcf -> maximum_buffer_size_in_ms , lc -> target_bandwidth , 1000 ) ; if ( i > 0 ) lc -> avg_frame_size_for_layer = ( int ) ( ( oxcf -> target_bitrate [ i ] - oxcf -> target_bitrate [ i - 1 ] ) * 1000 / ( lc -> framerate - prev_layer_framerate ) ) ; prev_layer_framerate = lc -> framerate ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> oxcf -> number_of_layers && i < VPX_TS_MAX_LAYERS ; ++ i <S2SV_ModEnd> ) { LAYER_CONTEXT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3619\n\n```\nCWE-20 static int apparmor_setprocattr ( struct task_struct * task , char * name , void * value , size_t size ) { char * command , * args = value ; size_t arg_size ; int error ; if ( size == 0 ) return - EINVAL ; if ( args [ size - 1 ] != '\\\\0' ) { if ( size == PAGE_SIZE ) return - EINVAL ; args [ size ] = '\\\\0' ; } if ( current != task ) return - EACCES ; args = value ; args = strim ( args ) ; command = strsep ( & args , \"<S2SV_blank>\" ) ; if ( ! args ) return - EINVAL ; args = skip_spaces ( args ) ; if ( ! * args ) return - EINVAL ; arg_size = size - ( args - ( char * ) value ) ; if ( strcmp ( name , \"current\" ) == 0 ) { if ( strcmp ( command , \"changehat\" ) == 0 ) { error = aa_setprocattr_changehat ( args , arg_size , ! AA_DO_TEST ) ; } else if ( strcmp ( command , \"permhat\" ) == 0 ) { error = aa_setprocattr_changehat ( args , arg_size , AA_DO_TEST ) ; } else if ( strcmp ( command , \"changeprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , ! AA_DO_TEST ) ; } else if ( strcmp ( command , \"permprofile\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , ! AA_ONEXEC , AA_DO_TEST ) ; } else if ( strcmp ( command , \"permipc\" ) == 0 ) { error = aa_setprocattr_permipc ( args ) ; } else { struct common_audit_data sa ; COMMON_AUDIT_DATA_INIT ( & sa , NONE ) ; sa . aad . op = OP_SETPROCATTR ; sa . aad . info = name ; sa . aad . error = - EINVAL ; <S2SV_StartBug> return aa_audit ( AUDIT_APPARMOR_DENIED , NULL , GFP_KERNEL , <S2SV_EndBug> & sa , NULL ) ; } } else if ( strcmp ( name , \"exec\" ) == 0 ) { error = aa_setprocattr_changeprofile ( args , AA_ONEXEC , ! AA_DO_TEST ) ; } else { return - EINVAL ; } if ( ! error ) error = size ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( AUDIT_APPARMOR_DENIED , __aa_current_profile ( ) , GFP_KERNEL , & sa , NULL <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13233\n\n```\nCWE-362 static unsigned long get_seg_limit ( struct pt_regs * regs , int seg_reg_idx ) { <S2SV_StartBug> struct desc_struct * desc ; <S2SV_EndBug> unsigned long limit ; short sel ; sel = get_segment_selector ( regs , seg_reg_idx ) ; if ( sel < 0 ) return 0 ; if ( user_64bit_mode ( regs ) || v8086_mode ( regs ) ) return - 1L ; if ( ! sel ) return 0 ; <S2SV_StartBug> desc = get_desc ( sel ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! desc ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> limit = get_desc_limit ( desc ) ; <S2SV_EndBug> <S2SV_StartBug> if ( desc -> g ) <S2SV_EndBug> limit = ( limit << 12 ) + 0xfff ; return limit ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct desc_struct <S2SV_ModEnd> desc ; unsigned <S2SV_ModStart> return 0 ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! get_desc ( & desc , sel ) <S2SV_ModEnd> ) return 0 <S2SV_ModStart> = get_desc_limit ( & <S2SV_ModStart> if ( desc . <S2SV_ModEnd> g ) limit\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13054\n\n```\nCWE-125 static int lldp_private_8023_print ( netdissect_options * ndo , const u_char * tptr , u_int tlv_len ) { int subtype , hexdump = FALSE ; if ( tlv_len < 4 ) { return hexdump ; } subtype = * ( tptr + 3 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Subtype<S2SV_blank>(%u)\" , tok2str ( lldp_8023_subtype_values , \"unknown\" , subtype ) , subtype ) ) ; switch ( subtype ) { case LLDP_PRIVATE_8023_SUBTYPE_MACPHY : if ( tlv_len < 9 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>autonegotiation<S2SV_blank>[%s]<S2SV_blank>(0x%02x)\" , bittok2str ( lldp_8023_autonegotiation_values , \"none\" , * ( tptr + 4 ) ) , * ( tptr + 4 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>PMD<S2SV_blank>autoneg<S2SV_blank>capability<S2SV_blank>[%s]<S2SV_blank>(0x%04x)\" , bittok2str ( lldp_pmd_capability_values , \"unknown\" , EXTRACT_16BITS ( tptr + 5 ) ) , EXTRACT_16BITS ( tptr + 5 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MAU<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>(0x%04x)\" , tok2str ( lldp_mau_types_values , \"unknown\" , EXTRACT_16BITS ( tptr + 7 ) ) , EXTRACT_16BITS ( tptr + 7 ) ) ) ; break ; case LLDP_PRIVATE_8023_SUBTYPE_MDIPOWER : if ( tlv_len < 7 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MDI<S2SV_blank>power<S2SV_blank>support<S2SV_blank>[%s],<S2SV_blank>power<S2SV_blank>pair<S2SV_blank>%s,<S2SV_blank>power<S2SV_blank>class<S2SV_blank>%s\" , bittok2str ( lldp_mdi_values , \"none\" , * ( tptr + 4 ) ) , tok2str ( lldp_mdi_power_pairs_values , \"unknown\" , * ( tptr + 5 ) ) , tok2str ( lldp_mdi_power_class_values , \"unknown\" , * ( tptr + 6 ) ) ) ) ; break ; case LLDP_PRIVATE_8023_SUBTYPE_LINKAGGR : if ( tlv_len < 9 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>aggregation<S2SV_blank>status<S2SV_blank>[%s],<S2SV_blank>aggregation<S2SV_blank>port<S2SV_blank>ID<S2SV_blank>%u\" , bittok2str ( lldp_aggregation_values , \"none\" , * ( tptr + 4 ) ) , EXTRACT_32BITS ( tptr + 5 ) ) ) ; break ; case LLDP_PRIVATE_8023_SUBTYPE_MTU : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MTU<S2SV_blank>size<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 4 ) ) ) ; <S2SV_EndBug> break ; default : hexdump = TRUE ; break ; } return hexdump ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case LLDP_PRIVATE_8023_SUBTYPE_MTU : if ( tlv_len < 6 ) { return hexdump ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 vpx_codec_err_t vpx_codec_set_frame_buffer_functions ( vpx_codec_ctx_t * ctx , vpx_get_frame_buffer_cb_fn_t cb_get , vpx_release_frame_buffer_cb_fn_t cb_release , void * cb_priv ) { vpx_codec_err_t res ; if ( ! ctx || ! cb_get || ! cb_release ) { res = VPX_CODEC_INVALID_PARAM ; } else if ( ! ctx -> iface || ! ctx -> priv || ! ( ctx -> iface -> caps & VPX_CODEC_CAP_EXTERNAL_FRAME_BUFFER ) ) { res = VPX_CODEC_ERROR ; } else { <S2SV_StartBug> res = ctx -> iface -> dec . set_fb_fn ( ctx -> priv -> alg_priv , cb_get , cb_release , <S2SV_EndBug> cb_priv ) ; } return SAVE_STATUS ( ctx , res ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . set_fb_fn ( get_alg_priv ( ctx ) <S2SV_ModEnd> , cb_get ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6647\n\n```\nCWE-20 static int futex_wait_requeue_pi ( u32 __user * uaddr , unsigned int flags , u32 val , ktime_t * abs_time , u32 bitset , u32 __user * uaddr2 ) { struct hrtimer_sleeper timeout , * to = NULL ; struct rt_mutex_waiter rt_waiter ; struct rt_mutex * pi_mutex = NULL ; struct futex_hash_bucket * hb ; union futex_key key2 = FUTEX_KEY_INIT ; struct futex_q q = futex_q_init ; <S2SV_StartBug> int res , ret ; <S2SV_EndBug> if ( ! bitset ) return - EINVAL ; if ( abs_time ) { to = & timeout ; hrtimer_init_on_stack ( & to -> timer , ( flags & FLAGS_CLOCKRT ) ? CLOCK_REALTIME : CLOCK_MONOTONIC , HRTIMER_MODE_ABS ) ; hrtimer_init_sleeper ( to , current ) ; hrtimer_set_expires_range_ns ( & to -> timer , * abs_time , current -> timer_slack_ns ) ; } debug_rt_mutex_init_waiter ( & rt_waiter ) ; rt_waiter . task = NULL ; ret = get_futex_key ( uaddr2 , flags & FLAGS_SHARED , & key2 , VERIFY_WRITE ) ; if ( unlikely ( ret != 0 ) ) goto out ; q . bitset = bitset ; q . rt_waiter = & rt_waiter ; q . requeue_pi_key = & key2 ; ret = futex_wait_setup ( uaddr , val , flags , & q , & hb ) ; if ( ret ) goto out_key2 ; futex_wait_queue_me ( hb , & q , to ) ; spin_lock ( & hb -> lock ) ; ret = handle_early_requeue_pi_wakeup ( hb , & q , & key2 , to ) ; spin_unlock ( & hb -> lock ) ; if ( ret ) goto out_put_keys ; if ( ! q . rt_waiter ) { if ( q . pi_state && ( q . pi_state -> owner != current ) ) { spin_lock ( q . lock_ptr ) ; ret = fixup_pi_state_owner ( uaddr2 , & q , current ) ; spin_unlock ( q . lock_ptr ) ; } } else { WARN_ON ( ! q . pi_state ) ; pi_mutex = & q . pi_state -> pi_mutex ; ret = rt_mutex_finish_proxy_lock ( pi_mutex , to , & rt_waiter , 1 ) ; debug_rt_mutex_free_waiter ( & rt_waiter ) ; spin_lock ( q . lock_ptr ) ; res = fixup_owner ( uaddr2 , & q , ! ret ) ; if ( res ) ret = ( res < 0 ) ? res : 0 ; unqueue_me_pi ( & q ) ; } if ( ret == - EFAULT ) { if ( pi_mutex && rt_mutex_owner ( pi_mutex ) == current ) rt_mutex_unlock ( pi_mutex ) ; } else if ( ret == - EINTR ) { ret = - EWOULDBLOCK ; } out_put_keys : put_futex_key ( & q . key ) ; out_key2 : put_futex_key ( & key2 ) ; out : if ( to ) { hrtimer_cancel ( & to -> timer ) ; destroy_hrtimer_on_stack ( & to -> timer ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> res , ret ; if ( uaddr == uaddr2 ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8964\n\n```\nCWE-200 static void tty_set_termios_ldisc ( struct tty_struct * tty , int num ) { down_write ( & tty -> termios_rwsem ) ; tty -> termios . c_line = num ; up_write ( & tty -> termios_rwsem ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> termios_rwsem ) ; tty -> disc_data = NULL ; tty -> receive_room = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3571\n\n```\nCWE-000 int dtls1_get_record ( SSL * s ) { int ssl_major , ssl_minor ; int i , n ; SSL3_RECORD * rr ; unsigned char * p = NULL ; unsigned short version ; DTLS1_BITMAP * bitmap ; unsigned int is_next_epoch ; rr = & ( s -> s3 -> rrec ) ; dtls1_process_buffered_records ( s ) ; if ( dtls1_get_processed_record ( s ) ) return 1 ; again : if ( ( s -> rstate != SSL_ST_READ_BODY ) || ( s -> packet_length < DTLS1_RT_HEADER_LENGTH ) ) { n = ssl3_read_n ( s , DTLS1_RT_HEADER_LENGTH , s -> s3 -> rbuf . len , 0 ) ; if ( n <= 0 ) return ( n ) ; if ( s -> packet_length != DTLS1_RT_HEADER_LENGTH ) { s -> packet_length = 0 ; goto again ; } s -> rstate = SSL_ST_READ_BODY ; p = s -> packet ; if ( s -> msg_callback ) s -> msg_callback ( 0 , 0 , SSL3_RT_HEADER , p , DTLS1_RT_HEADER_LENGTH , s , s -> msg_callback_arg ) ; rr -> type = * ( p ++ ) ; ssl_major = * ( p ++ ) ; ssl_minor = * ( p ++ ) ; version = ( ssl_major << 8 ) | ssl_minor ; n2s ( p , rr -> epoch ) ; memcpy ( & ( s -> s3 -> read_sequence [ 2 ] ) , p , 6 ) ; p += 6 ; n2s ( p , rr -> length ) ; if ( ! s -> first_packet ) { if ( version != s -> version ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( ( version & 0xff00 ) != ( s -> version & 0xff00 ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( rr -> length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( rr -> length > s -> packet_length - DTLS1_RT_HEADER_LENGTH ) { i = rr -> length ; n = ssl3_read_n ( s , i , i , 1 ) ; <S2SV_StartBug> if ( n <= 0 ) return ( n ) ; <S2SV_EndBug> if ( n != i ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } s -> rstate = SSL_ST_READ_HEADER ; bitmap = dtls1_get_bitmap ( s , rr , & is_next_epoch ) ; if ( bitmap == NULL ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP if ( ! BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) ) { # endif if ( ! ( s -> d1 -> listen && rr -> type == SSL3_RT_HANDSHAKE && * p == SSL3_MT_CLIENT_HELLO ) && ! dtls1_record_replay_check ( s , bitmap ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP } # endif if ( rr -> length == 0 ) goto again ; if ( is_next_epoch ) { if ( ( SSL_in_init ( s ) || s -> in_handshake ) && ! s -> d1 -> listen ) { dtls1_buffer_record ( s , & ( s -> d1 -> unprocessed_rcds ) , rr -> seq_num ) ; } rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( ! dtls1_process_record ( s ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( n <S2SV_ModEnd> != i )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8890\n\n```\nCWE-415 struct sock * inet_csk_clone_lock ( const struct sock * sk , const struct request_sock * req , const gfp_t priority ) { struct sock * newsk = sk_clone_lock ( sk , priority ) ; if ( newsk ) { struct inet_connection_sock * newicsk = inet_csk ( newsk ) ; newsk -> sk_state = TCP_SYN_RECV ; newicsk -> icsk_bind_hash = NULL ; inet_sk ( newsk ) -> inet_dport = inet_rsk ( req ) -> ir_rmt_port ; inet_sk ( newsk ) -> inet_num = inet_rsk ( req ) -> ir_num ; inet_sk ( newsk ) -> inet_sport = htons ( inet_rsk ( req ) -> ir_num ) ; newsk -> sk_write_space = sk_stream_write_space ; sock_reset_flag ( newsk , SOCK_RCU_FREE ) ; <S2SV_StartBug> newsk -> sk_mark = inet_rsk ( req ) -> ir_mark ; <S2SV_EndBug> atomic64_set ( & newsk -> sk_cookie , atomic64_read ( & inet_rsk ( req ) -> ir_cookie ) ) ; newicsk -> icsk_retransmits = 0 ; newicsk -> icsk_backoff = 0 ; newicsk -> icsk_probes_out = 0 ; memset ( & newicsk -> icsk_accept_queue , 0 , sizeof ( newicsk -> icsk_accept_queue ) ) ; security_inet_csk_clone ( newsk , req ) ; } return newsk ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SOCK_RCU_FREE ) ; inet_sk ( newsk ) -> mc_list = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5986\n\n```\nCWE-362 static int sctp_wait_for_sndbuf ( struct sctp_association * asoc , long * timeo_p , size_t msg_len ) { struct sock * sk = asoc -> base . sk ; int err = 0 ; long current_timeo = * timeo_p ; DEFINE_WAIT ( wait ) ; pr_debug ( \"%s:<S2SV_blank>asoc:%p,<S2SV_blank>timeo:%ld,<S2SV_blank>msg_len:%zu\\\\n\" , __func__ , asoc , * timeo_p , msg_len ) ; sctp_association_hold ( asoc ) ; for ( ; ; ) { prepare_to_wait_exclusive ( & asoc -> wait , & wait , TASK_INTERRUPTIBLE ) ; if ( ! * timeo_p ) goto do_nonblock ; if ( sk -> sk_err || asoc -> state >= SCTP_STATE_SHUTDOWN_PENDING || asoc -> base . dead ) goto do_error ; if ( signal_pending ( current ) ) goto do_interrupted ; if ( msg_len <= sctp_wspace ( asoc ) ) break ; release_sock ( sk ) ; current_timeo = schedule_timeout ( current_timeo ) ; <S2SV_StartBug> BUG_ON ( sk != asoc -> base . sk ) ; <S2SV_EndBug> lock_sock ( sk ) ; * timeo_p = current_timeo ; } out : finish_wait ( & asoc -> wait , & wait ) ; sctp_association_put ( asoc ) ; return err ; do_error : err = - EPIPE ; goto out ; do_interrupted : err = sock_intr_errno ( * timeo_p ) ; goto out ; do_nonblock : err = - EAGAIN ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_timeo ) ; if <S2SV_ModEnd> ( sk != <S2SV_ModStart> . sk ) goto do_error\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14352\n\n```\nCWE-119 void imap_quote_string ( char * dest , size_t dlen , const char * src , bool quote_backtick ) { const char * quote = \"`\\\\\"\\\\\\\\\" ; if ( ! quote_backtick ) quote ++ ; char * pt = dest ; const char * s = src ; * pt ++ = \\'\"\\' ; <S2SV_StartBug> dlen -= 2 ; <S2SV_EndBug> for ( ; * s && dlen ; s ++ ) { if ( strchr ( quote , * s ) ) { if ( dlen < 2 ) break ; dlen -= 2 ; * pt ++ = '\\\\\\\\' ; * pt ++ = * s ; } else { * pt ++ = * s ; dlen -- ; } } * pt ++ = \\'\"\\' ; * pt = '\\\\0' ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dlen -= 3 <S2SV_ModEnd> ; for (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13039\n\n```\nCWE-125 static const u_char * ikev1_n_print ( netdissect_options * ndo , u_char tpay _U_ , const struct isakmp_gen * ext , u_int item_len , const u_char * ep , uint32_t phase _U_ , uint32_t doi0 _U_ , uint32_t proto0 _U_ , int depth _U_ ) { const struct ikev1_pl_n * p ; struct ikev1_pl_n n ; const u_char * cp ; const u_char * ep2 ; uint32_t doi ; uint32_t proto ; static const char * notify_error_str [ ] = { NULL , \"INVALID-PAYLOAD-TYPE\" , \"DOI-NOT-SUPPORTED\" , \"SITUATION-NOT-SUPPORTED\" , \"INVALID-COOKIE\" , \"INVALID-MAJOR-VERSION\" , \"INVALID-MINOR-VERSION\" , \"INVALID-EXCHANGE-TYPE\" , \"INVALID-FLAGS\" , \"INVALID-MESSAGE-ID\" , \"INVALID-PROTOCOL-ID\" , \"INVALID-SPI\" , \"INVALID-TRANSFORM-ID\" , \"ATTRIBUTES-NOT-SUPPORTED\" , \"NO-PROPOSAL-CHOSEN\" , \"BAD-PROPOSAL-SYNTAX\" , \"PAYLOAD-MALFORMED\" , \"INVALID-KEY-INFORMATION\" , \"INVALID-ID-INFORMATION\" , \"INVALID-CERT-ENCODING\" , \"INVALID-CERTIFICATE\" , \"CERT-TYPE-UNSUPPORTED\" , \"INVALID-CERT-AUTHORITY\" , \"INVALID-HASH-INFORMATION\" , \"AUTHENTICATION-FAILED\" , \"INVALID-SIGNATURE\" , \"ADDRESS-NOTIFICATION\" , \"NOTIFY-SA-LIFETIME\" , \"CERTIFICATE-UNAVAILABLE\" , \"UNSUPPORTED-EXCHANGE-TYPE\" , \"UNEQUAL-PAYLOAD-LENGTHS\" , } ; static const char * ipsec_notify_error_str [ ] = { \"RESERVED\" , } ; static const char * notify_status_str [ ] = { \"CONNECTED\" , } ; static const char * ipsec_notify_status_str [ ] = { \"RESPONDER-LIFETIME\" , \"REPLAY-STATUS\" , \"INITIAL-CONTACT\" , } ; # define NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( x ) , notify_error_str ) # define IPSEC_NOTIFY_ERROR_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 8192 ) , ipsec_notify_error_str ) # define NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 16384 ) , notify_status_str ) # define IPSEC_NOTIFY_STATUS_STR ( x ) STR_OR_ID ( ( u_int ) ( ( x ) - 24576 ) , ipsec_notify_status_str ) ND_PRINT ( ( ndo , \"%s:\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; p = ( const struct ikev1_pl_n * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & n , ext , sizeof ( n ) ) ; doi = ntohl ( n . doi ) ; proto = n . prot_id ; if ( doi != 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>doi=%d\" , doi ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%d\" , proto ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } return ( const u_char * ) ( p + 1 ) + n . spi_size ; } ND_PRINT ( ( ndo , \"<S2SV_blank>doi=ipsec\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>proto=%s\" , PROTOIDSTR ( proto ) ) ) ; if ( ntohs ( n . type ) < 8192 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 16384 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_ERROR_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 24576 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else if ( ntohs ( n . type ) < 32768 ) ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , IPSEC_NOTIFY_STATUS_STR ( ntohs ( n . type ) ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>type=%s\" , numstr ( ntohs ( n . type ) ) ) ) ; if ( n . spi_size ) { ND_PRINT ( ( ndo , \"<S2SV_blank>spi=\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( p + 1 ) , n . spi_size ) ) goto trunc ; } cp = ( const u_char * ) ( p + 1 ) + n . spi_size ; ep2 = ( const u_char * ) p + item_len ; if ( cp < ep ) { switch ( ntohs ( n . type ) ) { case IPSECDOI_NTYPE_RESPONDER_LIFETIME : { const struct attrmap * map = oakley_t_map ; size_t nmap = sizeof ( oakley_t_map ) / sizeof ( oakley_t_map [ 0 ] ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>attrs=(\" ) ) ; while ( cp < ep && cp < ep2 ) { cp = ikev1_attrmap_print ( ndo , cp , <S2SV_StartBug> ( ep < ep2 ) ? ep : ep2 , map , nmap ) ; <S2SV_EndBug> } ND_PRINT ( ( ndo , \")\" ) ) ; break ; } case IPSECDOI_NTYPE_REPLAY_STATUS : ND_PRINT ( ( ndo , \"<S2SV_blank>status=(\" ) ) ; ND_PRINT ( ( ndo , \"replay<S2SV_blank>detection<S2SV_blank>%sabled\" , EXTRACT_32BITS ( cp ) ? \"en\" : \"dis\" ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; default : if ( ndo -> ndo_vflag > 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>data=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) ( cp ) , ep - cp ) ) goto trunc ; ND_PRINT ( ( ndo , \")\" ) ) ; } else { if ( ! ike_show_somedata ( ndo , cp , ep ) ) goto trunc ; } break ; } } return ( const u_char * ) ext + item_len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_N ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , cp , ep2 <S2SV_ModEnd> , map , <S2SV_ModStart> nmap ) ; if ( cp == NULL ) { ND_PRINT ( ( ndo , \")\" ) ) ; goto trunc ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void fdct8 ( const int16_t * input , int16_t * output ) { <S2SV_EndBug> <S2SV_StartBug> int s0 , s1 , s2 , s3 , s4 , s5 , s6 , s7 ; <S2SV_EndBug> <S2SV_StartBug> int t0 , t1 , t2 , t3 ; <S2SV_EndBug> int x0 , x1 , x2 , x3 ; s0 = input [ 0 ] + input [ 7 ] ; s1 = input [ 1 ] + input [ 6 ] ; s2 = input [ 2 ] + input [ 5 ] ; s3 = input [ 3 ] + input [ 4 ] ; s4 = input [ 3 ] - input [ 4 ] ; s5 = input [ 2 ] - input [ 5 ] ; s6 = input [ 1 ] - input [ 6 ] ; s7 = input [ 0 ] - input [ 7 ] ; x0 = s0 + s3 ; x1 = s1 + s2 ; x2 = s1 - s2 ; x3 = s0 - s3 ; t0 = ( x0 + x1 ) * cospi_16_64 ; t1 = ( x0 - x1 ) * cospi_16_64 ; t2 = x2 * cospi_24_64 + x3 * cospi_8_64 ; t3 = - x2 * cospi_8_64 + x3 * cospi_24_64 ; <S2SV_StartBug> output [ 0 ] = fdct_round_shift ( t0 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 2 ] = fdct_round_shift ( t2 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 4 ] = fdct_round_shift ( t1 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 6 ] = fdct_round_shift ( t3 ) ; <S2SV_EndBug> t0 = ( s6 - s5 ) * cospi_16_64 ; t1 = ( s6 + s5 ) * cospi_16_64 ; <S2SV_StartBug> t2 = fdct_round_shift ( t0 ) ; <S2SV_EndBug> t3 = fdct_round_shift ( t1 ) ; x0 = s4 + t2 ; x1 = s4 - t2 ; x2 = s7 - t3 ; x3 = s7 + t3 ; t0 = x0 * cospi_28_64 + x3 * cospi_4_64 ; t1 = x1 * cospi_12_64 + x2 * cospi_20_64 ; t2 = x2 * cospi_12_64 + x1 * - cospi_20_64 ; t3 = x3 * cospi_28_64 + x0 * - cospi_4_64 ; <S2SV_StartBug> output [ 1 ] = fdct_round_shift ( t0 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 3 ] = fdct_round_shift ( t2 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 5 ] = fdct_round_shift ( t1 ) ; <S2SV_EndBug> <S2SV_StartBug> output [ 7 ] = fdct_round_shift ( t3 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fdct8 ( const tran_low_t * input , tran_low_t <S2SV_ModEnd> * output ) <S2SV_ModStart> output ) { tran_high_t <S2SV_ModEnd> s0 , s1 <S2SV_ModStart> , s7 ; tran_high_t t0 , t1 , t2 , t3 ; tran_high_t <S2SV_ModEnd> x0 , x1 <S2SV_ModStart> 0 ] = ( tran_low_t ) <S2SV_ModStart> 2 ] = ( tran_low_t ) <S2SV_ModStart> 4 ] = ( tran_low_t ) <S2SV_ModStart> 6 ] = ( tran_low_t ) <S2SV_ModStart> ; t2 = ( tran_low_t ) fdct_round_shift ( t0 ) ; t3 = ( tran_low_t ) <S2SV_ModEnd> fdct_round_shift ( t1 <S2SV_ModStart> 1 ] = ( tran_low_t ) <S2SV_ModStart> 3 ] = ( tran_low_t ) <S2SV_ModStart> 5 ] = ( tran_low_t ) <S2SV_ModStart> 7 ] = ( tran_low_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999013\n\n```\nCWE-416 static int rm_read_multi ( AVFormatContext * s , AVIOContext * pb , AVStream * st , char * mime ) { int number_of_streams = avio_rb16 ( pb ) ; int number_of_mdpr ; int i , ret ; unsigned size2 ; for ( i = 0 ; i < number_of_streams ; i ++ ) avio_rb16 ( pb ) ; number_of_mdpr = avio_rb16 ( pb ) ; if ( number_of_mdpr != 1 ) { avpriv_request_sample ( s , \"MLTI<S2SV_blank>with<S2SV_blank>multiple<S2SV_blank>(%d)<S2SV_blank>MDPR\" , number_of_mdpr ) ; } for ( i = 0 ; i < number_of_mdpr ; i ++ ) { AVStream * st2 ; if ( i > 0 ) { st2 = avformat_new_stream ( s , NULL ) ; if ( ! st2 ) { ret = AVERROR ( ENOMEM ) ; return ret ; } st2 -> id = st -> id + ( i << 16 ) ; st2 -> codecpar -> bit_rate = st -> codecpar -> bit_rate ; st2 -> start_time = st -> start_time ; st2 -> duration = st -> duration ; st2 -> codecpar -> codec_type = AVMEDIA_TYPE_DATA ; st2 -> priv_data = ff_rm_alloc_rmstream ( ) ; if ( ! st2 -> priv_data ) return AVERROR ( ENOMEM ) ; } else st2 = st ; size2 = avio_rb32 ( pb ) ; ret = ff_rm_read_mdpr_codecdata ( s , s -> pb , st2 , st2 -> priv_data , <S2SV_StartBug> size2 , mime ) ; <S2SV_EndBug> if ( ret < 0 ) return ret ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , size2 , NULL <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr3_leaf_flipflags ( struct xfs_da_args * args ) { struct xfs_attr_leafblock * leaf1 ; struct xfs_attr_leafblock * leaf2 ; struct xfs_attr_leaf_entry * entry1 ; struct xfs_attr_leaf_entry * entry2 ; struct xfs_attr_leaf_name_remote * name_rmt ; struct xfs_buf * bp1 ; struct xfs_buf * bp2 ; int error ; # ifdef DEBUG struct xfs_attr3_icleaf_hdr ichdr1 ; struct xfs_attr3_icleaf_hdr ichdr2 ; xfs_attr_leaf_name_local_t * name_loc ; int namelen1 , namelen2 ; char * name1 , * name2 ; # endif trace_xfs_attr_leaf_flipflags ( args ) ; error = xfs_attr3_leaf_read ( args -> trans , args -> dp , args -> blkno , - 1 , & bp1 ) ; if ( error ) return error ; if ( args -> blkno2 != args -> blkno ) { error = xfs_attr3_leaf_read ( args -> trans , args -> dp , args -> blkno2 , - 1 , & bp2 ) ; if ( error ) return error ; } else { bp2 = bp1 ; } leaf1 = bp1 -> b_addr ; entry1 = & xfs_attr3_leaf_entryp ( leaf1 ) [ args -> index ] ; leaf2 = bp2 -> b_addr ; entry2 = & xfs_attr3_leaf_entryp ( leaf2 ) [ args -> index2 ] ; # ifdef DEBUG xfs_attr3_leaf_hdr_from_disk ( & ichdr1 , leaf1 ) ; ASSERT ( args -> index < ichdr1 . count ) ; ASSERT ( args -> index >= 0 ) ; xfs_attr3_leaf_hdr_from_disk ( & ichdr2 , leaf2 ) ; ASSERT ( args -> index2 < ichdr2 . count ) ; ASSERT ( args -> index2 >= 0 ) ; if ( entry1 -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf1 , args -> index ) ; namelen1 = name_loc -> namelen ; name1 = ( char * ) name_loc -> nameval ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf1 , args -> index ) ; namelen1 = name_rmt -> namelen ; name1 = ( char * ) name_rmt -> name ; } if ( entry2 -> flags & XFS_ATTR_LOCAL ) { name_loc = xfs_attr3_leaf_name_local ( leaf2 , args -> index2 ) ; namelen2 = name_loc -> namelen ; name2 = ( char * ) name_loc -> nameval ; } else { name_rmt = xfs_attr3_leaf_name_remote ( leaf2 , args -> index2 ) ; namelen2 = name_rmt -> namelen ; name2 = ( char * ) name_rmt -> name ; } ASSERT ( be32_to_cpu ( entry1 -> hashval ) == be32_to_cpu ( entry2 -> hashval ) ) ; ASSERT ( namelen1 == namelen2 ) ; ASSERT ( memcmp ( name1 , name2 , namelen1 ) == 0 ) ; # endif ASSERT ( entry1 -> flags & XFS_ATTR_INCOMPLETE ) ; ASSERT ( ( entry2 -> flags & XFS_ATTR_INCOMPLETE ) == 0 ) ; entry1 -> flags &= ~ XFS_ATTR_INCOMPLETE ; xfs_trans_log_buf ( args -> trans , bp1 , XFS_DA_LOGRANGE ( leaf1 , entry1 , sizeof ( * entry1 ) ) ) ; if ( args -> rmtblkno ) { ASSERT ( ( entry1 -> flags & XFS_ATTR_LOCAL ) == 0 ) ; name_rmt = xfs_attr3_leaf_name_remote ( leaf1 , args -> index ) ; name_rmt -> valueblk = cpu_to_be32 ( args -> rmtblkno ) ; <S2SV_StartBug> name_rmt -> valuelen = cpu_to_be32 ( args -> valuelen ) ; <S2SV_EndBug> xfs_trans_log_buf ( args -> trans , bp1 , XFS_DA_LOGRANGE ( leaf1 , name_rmt , sizeof ( * name_rmt ) ) ) ; } entry2 -> flags |= XFS_ATTR_INCOMPLETE ; xfs_trans_log_buf ( args -> trans , bp2 , XFS_DA_LOGRANGE ( leaf2 , entry2 , sizeof ( * entry2 ) ) ) ; if ( ( entry2 -> flags & XFS_ATTR_LOCAL ) == 0 ) { name_rmt = xfs_attr3_leaf_name_remote ( leaf2 , args -> index2 ) ; name_rmt -> valueblk = 0 ; name_rmt -> valuelen = 0 ; xfs_trans_log_buf ( args -> trans , bp2 , XFS_DA_LOGRANGE ( leaf2 , name_rmt , sizeof ( * name_rmt ) ) ) ; } error = xfs_trans_roll ( & args -> trans , args -> dp ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( args -> rmtvaluelen <S2SV_ModEnd> ) ; xfs_trans_log_buf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void read_intra_frame_mode_info ( VP9_COMMON * const cm , MACROBLOCKD * const xd , <S2SV_StartBug> int mi_row , int mi_col , vp9_reader * r ) { <S2SV_EndBug> MODE_INFO * const mi = xd -> mi [ 0 ] ; MB_MODE_INFO * const mbmi = & mi -> mbmi ; <S2SV_StartBug> const MODE_INFO * above_mi = xd -> mi [ - cm -> mi_stride ] ; <S2SV_EndBug> <S2SV_StartBug> const MODE_INFO * left_mi = xd -> left_available ? xd -> mi [ - 1 ] : NULL ; <S2SV_EndBug> const BLOCK_SIZE bsize = mbmi -> sb_type ; int i ; <S2SV_StartBug> mbmi -> segment_id = read_intra_segment_id ( cm , xd , mi_row , mi_col , r ) ; <S2SV_EndBug> mbmi -> skip = read_skip ( cm , xd , mbmi -> segment_id , r ) ; <S2SV_StartBug> mbmi -> tx_size = read_tx_size ( cm , xd , cm -> tx_mode , bsize , 1 , r ) ; <S2SV_EndBug> mbmi -> ref_frame [ 0 ] = INTRA_FRAME ; mbmi -> ref_frame [ 1 ] = NONE ; switch ( bsize ) { case BLOCK_4X4 : for ( i = 0 ; i < 4 ; ++ i ) mi -> bmi [ i ] . as_mode = read_intra_mode ( r , get_y_mode_probs ( mi , above_mi , left_mi , i ) ) ; mbmi -> mode = mi -> bmi [ 3 ] . as_mode ; break ; case BLOCK_4X8 : mi -> bmi [ 0 ] . as_mode = mi -> bmi [ 2 ] . as_mode = read_intra_mode ( r , get_y_mode_probs ( mi , above_mi , left_mi , 0 ) ) ; mi -> bmi [ 1 ] . as_mode = mi -> bmi [ 3 ] . as_mode = mbmi -> mode = read_intra_mode ( r , get_y_mode_probs ( mi , above_mi , left_mi , 1 ) ) ; break ; case BLOCK_8X4 : mi -> bmi [ 0 ] . as_mode = mi -> bmi [ 1 ] . as_mode = read_intra_mode ( r , get_y_mode_probs ( mi , above_mi , left_mi , 0 ) ) ; mi -> bmi [ 2 ] . as_mode = mi -> bmi [ 3 ] . as_mode = mbmi -> mode = read_intra_mode ( r , get_y_mode_probs ( mi , above_mi , left_mi , 2 ) ) ; break ; default : mbmi -> mode = read_intra_mode ( r , get_y_mode_probs ( mi , above_mi , left_mi , 0 ) ) ; } mbmi -> uv_mode = read_intra_mode ( r , vp9_kf_uv_mode_prob [ mbmi -> mode ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mi_col , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> = xd -> above_mi <S2SV_ModEnd> ; const MODE_INFO <S2SV_ModStart> = xd -> left_mi <S2SV_ModEnd> ; const BLOCK_SIZE <S2SV_ModStart> int i ; const int mi_offset = mi_row * cm -> mi_cols + mi_col ; const int bw = xd -> plane [ 0 ] . n4_w >> 1 ; const int bh = xd -> plane [ 0 ] . n4_h >> 1 ; const int x_mis = MIN ( cm -> mi_cols - mi_col , bw ) ; const int y_mis = MIN ( cm -> mi_rows - mi_row , bh ) ; <S2SV_ModStart> ( cm , mi_offset , x_mis , y_mis <S2SV_ModEnd> , r ) <S2SV_ModStart> cm , xd <S2SV_ModEnd> , 1 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_CreateFalse ( void ) { cJSON * item = cJSON_New_Item ( ) ; if ( item ) item -> type = cJSON_False ; return item ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12190\n\n```\nCWE-772 struct bio * bio_map_user_iov ( struct request_queue * q , const struct iov_iter * iter , gfp_t gfp_mask ) { int j ; int nr_pages = 0 ; struct page * * pages ; struct bio * bio ; int cur_page = 0 ; int ret , offset ; struct iov_iter i ; struct iovec iov ; iov_for_each ( iov , i , * iter ) { unsigned long uaddr = ( unsigned long ) iov . iov_base ; unsigned long len = iov . iov_len ; unsigned long end = ( uaddr + len + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; unsigned long start = uaddr >> PAGE_SHIFT ; if ( end < start ) return ERR_PTR ( - EINVAL ) ; nr_pages += end - start ; if ( uaddr & queue_dma_alignment ( q ) ) return ERR_PTR ( - EINVAL ) ; } if ( ! nr_pages ) return ERR_PTR ( - EINVAL ) ; bio = bio_kmalloc ( gfp_mask , nr_pages ) ; if ( ! bio ) return ERR_PTR ( - ENOMEM ) ; ret = - ENOMEM ; pages = kcalloc ( nr_pages , sizeof ( struct page * ) , gfp_mask ) ; if ( ! pages ) goto out ; iov_for_each ( iov , i , * iter ) { unsigned long uaddr = ( unsigned long ) iov . iov_base ; unsigned long len = iov . iov_len ; unsigned long end = ( uaddr + len + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; unsigned long start = uaddr >> PAGE_SHIFT ; const int local_nr_pages = end - start ; const int page_limit = cur_page + local_nr_pages ; ret = get_user_pages_fast ( uaddr , local_nr_pages , ( iter -> type & WRITE ) != WRITE , & pages [ cur_page ] ) ; if ( ret < local_nr_pages ) { ret = - EFAULT ; goto out_unmap ; } offset = offset_in_page ( uaddr ) ; for ( j = cur_page ; j < page_limit ; j ++ ) { unsigned int bytes = PAGE_SIZE - offset ; <S2SV_StartBug> if ( len <= 0 ) <S2SV_EndBug> break ; if ( bytes > len ) bytes = len ; if ( bio_add_pc_page ( q , bio , pages [ j ] , bytes , offset ) < bytes ) break ; <S2SV_StartBug> len -= bytes ; <S2SV_EndBug> offset = 0 ; } cur_page = j ; while ( j < page_limit ) put_page ( pages [ j ++ ] ) ; } kfree ( pages ) ; bio_set_flag ( bio , BIO_USER_MAPPED ) ; bio_get ( bio ) ; return bio ; out_unmap : for ( j = 0 ; j < nr_pages ; j ++ ) { if ( ! pages [ j ] ) break ; put_page ( pages [ j ] ) ; } out : kfree ( pages ) ; bio_put ( bio ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - offset ; unsigned short prev_bi_vcnt = bio -> bi_vcnt ; <S2SV_ModStart> ) break ; if ( bio -> bi_vcnt == prev_bi_vcnt ) put_page ( pages [ j ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8958\n\n```\nCWE-125 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , <S2SV_StartBug> length ; <S2SV_EndBug> ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } switch ( sun_info . maptype ) { case RMT_NONE : break ; case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( ( number_pixels * sun_info . depth ) > ( 8 * sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( sun_info . length , bytes_per_line * sun_info . width ) , sizeof ( * sun_data ) ) ; if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; <S2SV_StartBug> sun_pixels = sun_data ; <S2SV_EndBug> bytes_per_line = 0 ; if ( sun_info . type == RT_ENCODED ) { size_t height ; height = sun_info . height ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * <S2SV_EndBug> height ) ; sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; <S2SV_StartBug> } <S2SV_EndBug> p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { if ( bytes_per_line == 0 ) bytes_per_line = image -> columns ; length = image -> rows * ( image -> columns + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + bytes_per_line % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , extent , height , <S2SV_ModStart> \"UnableToReadImageData\" ) ; <S2SV_ModEnd> height = sun_info <S2SV_ModStart> \"MemoryAllocationFailed\" ) ; if ( sun_info . type == RT_ENCODED ) <S2SV_ModStart> sun_data ) ; <S2SV_ModEnd> p = sun_pixels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8133\n\n```\nCWE-264 int regset_tls_set ( struct task_struct * target , const struct user_regset * regset , unsigned int pos , unsigned int count , const void * kbuf , const void __user * ubuf ) { struct user_desc infobuf [ GDT_ENTRY_TLS_ENTRIES ] ; const struct user_desc * info ; <S2SV_StartBug> if ( pos >= GDT_ENTRY_TLS_ENTRIES * sizeof ( struct user_desc ) || <S2SV_EndBug> ( pos % sizeof ( struct user_desc ) ) != 0 || ( count % sizeof ( struct user_desc ) ) != 0 ) return - EINVAL ; if ( kbuf ) info = kbuf ; else if ( __copy_from_user ( infobuf , ubuf , count ) ) return - EFAULT ; else info = infobuf ; <S2SV_StartBug> set_tls_desc ( target , <S2SV_EndBug> GDT_ENTRY_TLS_MIN + ( pos / sizeof ( struct user_desc ) ) , info , count / sizeof ( struct user_desc ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * info ; int i ; <S2SV_ModStart> = infobuf ; for ( i = 0 ; i < count / sizeof ( struct user_desc ) ; i ++ ) if ( ! tls_desc_okay ( info + i ) ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 int xfs_attr_rmtval_set ( struct xfs_da_args * args ) { struct xfs_inode * dp = args -> dp ; struct xfs_mount * mp = dp -> i_mount ; struct xfs_bmbt_irec map ; xfs_dablk_t lblkno ; xfs_fileoff_t lfileoff = 0 ; __uint8_t * src = args -> value ; int blkcnt ; int valuelen ; int nmap ; int error ; int offset = 0 ; trace_xfs_attr_rmtval_set ( args ) ; <S2SV_StartBug> blkcnt = xfs_attr3_rmt_blocks ( mp , args -> valuelen ) ; <S2SV_EndBug> error = xfs_bmap_first_unused ( args -> trans , args -> dp , blkcnt , & lfileoff , XFS_ATTR_FORK ) ; if ( error ) return error ; args -> rmtblkno = lblkno = ( xfs_dablk_t ) lfileoff ; args -> rmtblkcnt = blkcnt ; while ( blkcnt > 0 ) { int committed ; xfs_bmap_init ( args -> flist , args -> firstblock ) ; nmap = 1 ; error = xfs_bmapi_write ( args -> trans , dp , ( xfs_fileoff_t ) lblkno , blkcnt , XFS_BMAPI_ATTRFORK | XFS_BMAPI_METADATA , args -> firstblock , args -> total , & map , & nmap , args -> flist ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; return ( error ) ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; ASSERT ( nmap == 1 ) ; ASSERT ( ( map . br_startblock != DELAYSTARTBLOCK ) && ( map . br_startblock != HOLESTARTBLOCK ) ) ; lblkno += map . br_blockcount ; blkcnt -= map . br_blockcount ; error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) return ( error ) ; } lblkno = args -> rmtblkno ; blkcnt = args -> rmtblkcnt ; <S2SV_StartBug> valuelen = args -> valuelen ; <S2SV_EndBug> while ( valuelen > 0 ) { struct xfs_buf * bp ; xfs_daddr_t dblkno ; int dblkcnt ; ASSERT ( blkcnt > 0 ) ; xfs_bmap_init ( args -> flist , args -> firstblock ) ; nmap = 1 ; error = xfs_bmapi_read ( dp , ( xfs_fileoff_t ) lblkno , blkcnt , & map , & nmap , XFS_BMAPI_ATTRFORK ) ; if ( error ) return ( error ) ; ASSERT ( nmap == 1 ) ; ASSERT ( ( map . br_startblock != DELAYSTARTBLOCK ) && ( map . br_startblock != HOLESTARTBLOCK ) ) ; dblkno = XFS_FSB_TO_DADDR ( mp , map . br_startblock ) , dblkcnt = XFS_FSB_TO_BB ( mp , map . br_blockcount ) ; bp = xfs_buf_get ( mp -> m_ddev_targp , dblkno , dblkcnt , 0 ) ; if ( ! bp ) return ENOMEM ; bp -> b_ops = & xfs_attr3_rmt_buf_ops ; xfs_attr_rmtval_copyin ( mp , bp , args -> dp -> i_ino , & offset , & valuelen , & src ) ; error = xfs_bwrite ( bp ) ; xfs_buf_relse ( bp ) ; if ( error ) return error ; lblkno += map . br_blockcount ; blkcnt -= map . br_blockcount ; } ASSERT ( valuelen == 0 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , args -> rmtvaluelen <S2SV_ModEnd> ) ; error <S2SV_ModStart> = args -> rmtvaluelen <S2SV_ModEnd> ; while (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8104\n\n```\nCWE-399 static void init_vmcb ( struct vcpu_svm * svm ) { struct vmcb_control_area * control = & svm -> vmcb -> control ; struct vmcb_save_area * save = & svm -> vmcb -> save ; svm -> vcpu . fpu_active = 1 ; svm -> vcpu . arch . hflags = 0 ; set_cr_intercept ( svm , INTERCEPT_CR0_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR3_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR4_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR0_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR3_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR4_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR8_WRITE ) ; set_dr_intercepts ( svm ) ; set_exception_intercept ( svm , PF_VECTOR ) ; set_exception_intercept ( svm , UD_VECTOR ) ; set_exception_intercept ( svm , MC_VECTOR ) ; <S2SV_StartBug> set_exception_intercept ( svm , AC_VECTOR ) ; <S2SV_EndBug> set_intercept ( svm , INTERCEPT_INTR ) ; set_intercept ( svm , INTERCEPT_NMI ) ; set_intercept ( svm , INTERCEPT_SMI ) ; set_intercept ( svm , INTERCEPT_SELECTIVE_CR0 ) ; set_intercept ( svm , INTERCEPT_RDPMC ) ; set_intercept ( svm , INTERCEPT_CPUID ) ; set_intercept ( svm , INTERCEPT_INVD ) ; set_intercept ( svm , INTERCEPT_HLT ) ; set_intercept ( svm , INTERCEPT_INVLPG ) ; set_intercept ( svm , INTERCEPT_INVLPGA ) ; set_intercept ( svm , INTERCEPT_IOIO_PROT ) ; set_intercept ( svm , INTERCEPT_MSR_PROT ) ; set_intercept ( svm , INTERCEPT_TASK_SWITCH ) ; set_intercept ( svm , INTERCEPT_SHUTDOWN ) ; set_intercept ( svm , INTERCEPT_VMRUN ) ; set_intercept ( svm , INTERCEPT_VMMCALL ) ; set_intercept ( svm , INTERCEPT_VMLOAD ) ; set_intercept ( svm , INTERCEPT_VMSAVE ) ; set_intercept ( svm , INTERCEPT_STGI ) ; set_intercept ( svm , INTERCEPT_CLGI ) ; set_intercept ( svm , INTERCEPT_SKINIT ) ; set_intercept ( svm , INTERCEPT_WBINVD ) ; set_intercept ( svm , INTERCEPT_MONITOR ) ; set_intercept ( svm , INTERCEPT_MWAIT ) ; set_intercept ( svm , INTERCEPT_XSETBV ) ; control -> iopm_base_pa = iopm_base ; control -> msrpm_base_pa = __pa ( svm -> msrpm ) ; control -> int_ctl = V_INTR_MASKING_MASK ; init_seg ( & save -> es ) ; init_seg ( & save -> ss ) ; init_seg ( & save -> ds ) ; init_seg ( & save -> fs ) ; init_seg ( & save -> gs ) ; save -> cs . selector = 0xf000 ; save -> cs . base = 0xffff0000 ; save -> cs . attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK | SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK ; save -> cs . limit = 0xffff ; save -> gdtr . limit = 0xffff ; save -> idtr . limit = 0xffff ; init_sys_seg ( & save -> ldtr , SEG_TYPE_LDT ) ; init_sys_seg ( & save -> tr , SEG_TYPE_BUSY_TSS16 ) ; svm_set_efer ( & svm -> vcpu , 0 ) ; save -> dr6 = 0xffff0ff0 ; kvm_set_rflags ( & svm -> vcpu , 2 ) ; save -> rip = 0x0000fff0 ; svm -> vcpu . arch . regs [ VCPU_REGS_RIP ] = save -> rip ; svm_set_cr0 ( & svm -> vcpu , X86_CR0_NW | X86_CR0_CD | X86_CR0_ET ) ; kvm_mmu_reset_context ( & svm -> vcpu ) ; save -> cr4 = X86_CR4_PAE ; if ( npt_enabled ) { control -> nested_ctl = 1 ; clr_intercept ( svm , INTERCEPT_INVLPG ) ; clr_exception_intercept ( svm , PF_VECTOR ) ; clr_cr_intercept ( svm , INTERCEPT_CR3_READ ) ; clr_cr_intercept ( svm , INTERCEPT_CR3_WRITE ) ; save -> g_pat = svm -> vcpu . arch . pat ; save -> cr3 = 0 ; save -> cr4 = 0 ; } svm -> asid_generation = 0 ; svm -> nested . vmcb = 0 ; svm -> vcpu . arch . hflags = 0 ; if ( boot_cpu_has ( X86_FEATURE_PAUSEFILTER ) ) { control -> pause_filter_count = 3000 ; set_intercept ( svm , INTERCEPT_PAUSE ) ; } mark_all_dirty ( svm -> vmcb ) ; enable_gif ( svm ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svm , AC_VECTOR ) ; set_exception_intercept ( svm , DB_VECTOR\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3741\n\n```\nCWE-20 WORD32 ih264d_start_of_pic ( dec_struct_t * ps_dec , WORD32 i4_poc , pocstruct_t * ps_temp_poc , UWORD16 u2_frame_num , dec_pic_params_t * ps_pps ) { pocstruct_t * ps_prev_poc = & ps_dec -> s_cur_pic_poc ; pocstruct_t * ps_cur_poc = ps_temp_poc ; pic_buffer_t * pic_buf ; ivd_video_decode_op_t * ps_dec_output = ( ivd_video_decode_op_t * ) ps_dec -> pv_dec_out ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; dec_seq_params_t * ps_seq = ps_pps -> ps_sps ; UWORD8 u1_bottom_field_flag = ps_cur_slice -> u1_bottom_field_flag ; UWORD8 u1_field_pic_flag = ps_cur_slice -> u1_field_pic_flag ; high_profile_tools_t s_high_profile ; WORD32 ret ; H264_MUTEX_LOCK ( & ps_dec -> process_disp_mutex ) ; ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] ; ps_prev_poc -> u1_bot_field = ps_dec -> ps_cur_slice -> u1_bottom_field_flag ; ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst ; ps_prev_poc -> u2_frame_num = u2_frame_num ; ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> i1_next_ctxt_idx = 0 ; ps_dec -> u4_nmb_deblk = 0 ; if ( ps_dec -> u4_num_cores == 1 ) ps_dec -> u4_nmb_deblk = 1 ; if ( ps_seq -> u1_mb_aff_flag == 1 ) { ps_dec -> u4_nmb_deblk = 0 ; if ( ps_dec -> u4_num_cores > 2 ) ps_dec -> u4_num_cores = 2 ; } ps_dec -> u4_use_intrapred_line_copy = 0 ; if ( ps_seq -> u1_mb_aff_flag == 0 ) { ps_dec -> u4_use_intrapred_line_copy = 1 ; } ps_dec -> u4_app_disable_deblk_frm = 0 ; if ( ps_dec -> i4_degrade_type && ps_dec -> i4_degrade_pics ) { WORD32 degrade_pic ; ps_dec -> i4_degrade_pic_cnt ++ ; degrade_pic = 0 ; switch ( ps_dec -> i4_degrade_pics ) { case 4 : { degrade_pic = 1 ; break ; } case 3 : { if ( ps_cur_slice -> u1_slice_type != I_SLICE ) degrade_pic = 1 ; break ; } case 2 : { if ( ( ps_cur_slice -> u1_slice_type != I_SLICE ) && ( ps_dec -> i4_degrade_pic_cnt != ps_dec -> i4_nondegrade_interval ) ) degrade_pic = 1 ; break ; } case 1 : { if ( 0 == ps_cur_slice -> u1_nal_ref_idc ) { degrade_pic = 1 ; } break ; } } if ( degrade_pic ) { if ( ps_dec -> i4_degrade_type & 0x2 ) ps_dec -> u4_app_disable_deblk_frm = 1 ; if ( 0 == ps_cur_slice -> u1_nal_ref_idc ) { if ( ps_dec -> i4_degrade_type & 0x4 ) ps_dec -> i4_mv_frac_mask = 0 ; if ( ps_dec -> i4_degrade_type & 0x8 ) ps_dec -> i4_mv_frac_mask = 0 ; } } else ps_dec -> i4_degrade_pic_cnt = 0 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_dec -> u1_sl_typ_5_9 && ( ( ps_cur_slice -> u1_slice_type == I_SLICE ) || ( ps_cur_slice -> u1_slice_type == SI_SLICE ) ) ) ps_err -> u1_cur_pic_type = PIC_TYPE_I ; else ps_err -> u1_cur_pic_type = PIC_TYPE_UNKNOWN ; if ( ps_err -> u1_pic_aud_i == PIC_TYPE_I ) { ps_err -> u1_cur_pic_type = PIC_TYPE_I ; ps_err -> u1_pic_aud_i = PIC_TYPE_UNKNOWN ; } if ( ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { if ( ps_err -> u1_err_flag ) ih264d_reset_ref_bufs ( ps_dec -> ps_dpb_mgr ) ; ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } if ( ps_dec -> u1_init_dec_flag && ps_dec -> s_prev_seq_params . u1_eoseq_pending ) { WORD32 j ; for ( j = 0 ; j < MAX_DISP_BUFS_NEW ; j ++ ) { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , ps_dec -> au1_pic_buf_id_mv_buf_id_map [ j ] , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_IO ) ; } ps_dec -> u1_second_field = 0 ; ps_dec -> i4_cur_display_seq = 0 ; ps_dec -> s_prev_seq_params . u1_eoseq_pending = 0 ; } ret = ih264d_init_pic ( ps_dec , u2_frame_num , i4_poc , ps_pps ) ; if ( ret != OK ) return ret ; ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_pic_tu_coeff_data ; ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_pic_tu_coeff_data ; ps_dec -> ps_nmb_info = ps_dec -> ps_frm_mb_info ; if ( ps_dec -> u1_separate_parse ) { UWORD16 pic_wd ; UWORD16 pic_ht ; UWORD32 num_mbs ; pic_wd = ps_dec -> u2_pic_wd ; pic_ht = ps_dec -> u2_pic_ht ; num_mbs = ( pic_wd * pic_ht ) >> 8 ; if ( ps_dec -> pu1_dec_mb_map ) { memset ( ( void * ) ps_dec -> pu1_dec_mb_map , 0 , num_mbs ) ; } if ( ps_dec -> pu1_recon_mb_map ) { memset ( ( void * ) ps_dec -> pu1_recon_mb_map , 0 , num_mbs ) ; } if ( ps_dec -> pu2_slice_num_map ) { memset ( ( void * ) ps_dec -> pu2_slice_num_map , 0 , ( num_mbs * sizeof ( UWORD16 ) ) ) ; } } ps_dec -> ps_parse_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; ps_dec -> ps_decode_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; ps_dec -> ps_computebs_cur_slice = & ( ps_dec -> ps_dec_slice_buf [ 0 ] ) ; ps_dec -> s_high_profile . u1_scaling_present = 0 ; ps_dec -> s_high_profile . u1_transform8x8_present = 0 ; if ( 1 == ps_dec -> u4_share_disp_buf ) { UWORD32 i ; for ( i = 0 ; i < MAX_DISP_BUFS_NEW ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) continue ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , i , BUF_MGR_IO ) ; ps_dec -> u4_disp_buf_to_be_freed [ i ] = 0 ; ps_dec -> u4_disp_buf_mapping [ i ] = 0 ; } } if ( ! ( u1_field_pic_flag && 0 != ps_dec -> u1_top_bottom_decoded ) ) { pic_buffer_t * ps_cur_pic ; WORD32 cur_pic_buf_id , cur_mv_buf_id ; col_mv_buf_t * ps_col_mv ; while ( 1 ) { ps_cur_pic = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & cur_pic_buf_id ) ; if ( ps_cur_pic == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_PICBUF_T ; return ERROR_UNAVAIL_PICBUF_T ; } if ( 0 == ps_dec -> u4_disp_buf_mapping [ cur_pic_buf_id ] ) { break ; } } ps_col_mv = ( col_mv_buf_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , & cur_mv_buf_id ) ; if ( ps_col_mv == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_MVBUF_T ; return ERROR_UNAVAIL_MVBUF_T ; } ps_dec -> ps_cur_pic = ps_cur_pic ; ps_dec -> u1_pic_buf_id = cur_pic_buf_id ; ps_cur_pic -> u4_ts = ps_dec -> u4_ts ; ps_cur_pic -> u1_mv_buf_id = cur_mv_buf_id ; ps_dec -> au1_pic_buf_id_mv_buf_id_map [ cur_pic_buf_id ] = cur_mv_buf_id ; ps_cur_pic -> pu1_col_zero_flag = ( UWORD8 * ) ps_col_mv -> pv_col_zero_flag ; ps_cur_pic -> ps_mv = ( mv_pred_t * ) ps_col_mv -> pv_mv ; ps_dec -> au1_pic_buf_ref_flag [ cur_pic_buf_id ] = 0 ; if ( ps_dec -> u1_first_slice_in_stream ) { ps_dec -> ps_ref_pic_buf_lx [ 0 ] = ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] ; * ( ps_dec -> ps_dpb_mgr -> ps_init_dpb [ 0 ] [ 0 ] ) = * ps_cur_pic ; } if ( ! ps_dec -> ps_cur_pic ) { WORD32 j ; H264_DEC_DEBUG_PRINT ( \"-------<S2SV_blank>Display<S2SV_blank>Buffers<S2SV_blank>Reset<S2SV_blank>--------\\\\n\" ) ; for ( j = 0 ; j < MAX_DISP_BUFS_NEW ; j ++ ) { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , ps_dec -> au1_pic_buf_id_mv_buf_id_map [ j ] , BUF_MGR_REF ) ; ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , j , BUF_MGR_IO ) ; } ps_dec -> i4_cur_display_seq = 0 ; ps_dec -> i4_prev_max_display_seq = 0 ; ps_dec -> i4_max_poc = 0 ; ps_cur_pic = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & cur_pic_buf_id ) ; if ( ps_cur_pic == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_PICBUF_T ; return ERROR_UNAVAIL_PICBUF_T ; } ps_col_mv = ( col_mv_buf_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_mv_buf_mgr , & cur_mv_buf_id ) ; if ( ps_col_mv == NULL ) { ps_dec -> i4_error_code = ERROR_UNAVAIL_MVBUF_T ; return ERROR_UNAVAIL_MVBUF_T ; } ps_dec -> ps_cur_pic = ps_cur_pic ; ps_dec -> u1_pic_buf_id = cur_pic_buf_id ; ps_cur_pic -> u4_ts = ps_dec -> u4_ts ; ps_dec -> apv_buf_id_pic_buf_map [ cur_pic_buf_id ] = ( void * ) ps_cur_pic ; ps_cur_pic -> u1_mv_buf_id = cur_mv_buf_id ; ps_dec -> au1_pic_buf_id_mv_buf_id_map [ cur_pic_buf_id ] = cur_mv_buf_id ; ps_cur_pic -> pu1_col_zero_flag = ( UWORD8 * ) ps_col_mv -> pv_col_zero_flag ; ps_cur_pic -> ps_mv = ( mv_pred_t * ) ps_col_mv -> pv_mv ; ps_dec -> au1_pic_buf_ref_flag [ cur_pic_buf_id ] = 0 ; } ps_dec -> ps_cur_pic -> u1_picturetype = u1_field_pic_flag ; ps_dec -> ps_cur_pic -> u4_pack_slc_typ = SKIP_NONE ; H264_DEC_DEBUG_PRINT ( \"got<S2SV_blank>a<S2SV_blank>buffer\\\\n\" ) ; } else { H264_DEC_DEBUG_PRINT ( \"did<S2SV_blank>not<S2SV_blank>get<S2SV_blank>a<S2SV_blank>buffer\\\\n\" ) ; } ps_dec -> u4_pic_buf_got = 1 ; ps_dec -> ps_cur_pic -> i4_poc = i4_poc ; ps_dec -> ps_cur_pic -> i4_frame_num = u2_frame_num ; ps_dec -> ps_cur_pic -> i4_pic_num = u2_frame_num ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = ps_pps -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = ps_pps -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_avg_poc = ps_pps -> i4_avg_poc ; ps_dec -> ps_cur_pic -> u4_time_stamp = ps_dec -> u4_pts ; ps_dec -> s_cur_pic = * ( ps_dec -> ps_cur_pic ) ; if ( u1_field_pic_flag && u1_bottom_field_flag ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; ps_dec -> s_cur_pic . pu1_buf1 += ps_dec -> s_cur_pic . u2_frm_wd_y ; ps_dec -> s_cur_pic . pu1_buf2 += ps_dec -> s_cur_pic . u2_frm_wd_uv ; ps_dec -> s_cur_pic . pu1_buf3 += ps_dec -> s_cur_pic . u2_frm_wd_uv ; ps_dec -> s_cur_pic . ps_mv += ( ( ps_dec -> u2_pic_ht * ps_dec -> u2_pic_wd ) >> 5 ) ; ps_dec -> s_cur_pic . pu1_col_zero_flag += ( ( ps_dec -> u2_pic_ht * ps_dec -> u2_pic_wd ) >> 5 ) ; ps_dec -> ps_cur_pic -> u1_picturetype |= BOT_FLD ; i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } ps_cur_slice -> u1_mbaff_frame_flag = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; ps_dec -> ps_cur_pic -> u1_picturetype |= ( ps_cur_slice -> u1_mbaff_frame_flag << 2 ) ; ps_dec -> ps_cur_mb_row = ps_dec -> ps_nbr_mb_row ; ps_dec -> ps_cur_mb_row += 2 ; ps_dec -> ps_top_mb_row = ps_dec -> ps_nbr_mb_row ; ps_dec -> ps_top_mb_row += ( ( ps_dec -> u2_frm_wd_in_mbs + 2 ) << ( 1 - ps_dec -> ps_cur_sps -> u1_frame_mbs_only_flag ) ) ; ps_dec -> ps_top_mb_row += 2 ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> ps_mv_top = ps_dec -> ps_mv_top_p [ 0 ] ; ps_dec -> u1_mv_top_p = 0 ; ps_dec -> u1_mb_idx = 0 ; ps_dec -> ps_mv_left = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> i4_submb_ofst = - ( SUB_BLK_SIZE ) ; ps_dec -> u4_pred_info_idx = 0 ; ps_dec -> u4_pred_info_pkd_idx = 0 ; ps_dec -> u4_dma_buf_idx = 0 ; ps_dec -> ps_mv = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> ps_mv_bank_cur = ps_dec -> s_cur_pic . ps_mv ; ps_dec -> pu1_col_zero_flag = ps_dec -> s_cur_pic . pu1_col_zero_flag ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> i2_prev_slice_mbx = - 1 ; ps_dec -> i2_prev_slice_mby = 0 ; ps_dec -> u2_mv_2mb [ 0 ] = 0 ; ps_dec -> u2_mv_2mb [ 1 ] = 0 ; ps_dec -> u1_last_pic_not_decoded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> u2_cur_slice_num_dec_thread = 0 ; ps_dec -> u2_cur_slice_num_bs = 0 ; ps_dec -> u4_intra_pred_line_ofst = 0 ; ps_dec -> pu1_cur_y_intra_pred_line = ps_dec -> pu1_y_intra_pred_line ; ps_dec -> pu1_cur_u_intra_pred_line = ps_dec -> pu1_u_intra_pred_line ; ps_dec -> pu1_cur_v_intra_pred_line = ps_dec -> pu1_v_intra_pred_line ; ps_dec -> pu1_cur_y_intra_pred_line_base = ps_dec -> pu1_y_intra_pred_line ; ps_dec -> pu1_cur_u_intra_pred_line_base = ps_dec -> pu1_u_intra_pred_line ; ps_dec -> pu1_cur_v_intra_pred_line_base = ps_dec -> pu1_v_intra_pred_line ; ps_dec -> pu1_prev_y_intra_pred_line = ps_dec -> pu1_y_intra_pred_line + ( ps_dec -> u2_frm_wd_in_mbs * MB_SIZE ) ; ps_dec -> pu1_prev_u_intra_pred_line = ps_dec -> pu1_u_intra_pred_line + ps_dec -> u2_frm_wd_in_mbs * BLK8x8SIZE * YUV420SP_FACTOR ; ps_dec -> pu1_prev_v_intra_pred_line = ps_dec -> pu1_v_intra_pred_line + ps_dec -> u2_frm_wd_in_mbs * BLK8x8SIZE ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; { if ( ps_cur_slice -> u1_mbaff_frame_flag ) { ps_dec -> pf_compute_bs = ih264d_compute_bs_mbaff ; ps_dec -> pf_mvpred = ih264d_mvpred_mbaff ; } else { ps_dec -> pf_compute_bs = ih264d_compute_bs_non_mbaff ; ps_dec -> u1_cur_mb_fld_dec_flag = ps_cur_slice -> u1_field_pic_flag ; } } { UWORD8 u1_field_pic_flag = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; UWORD8 u1_mbaff = ps_cur_slice -> u1_mbaff_frame_flag ; UWORD8 uc_lastmbs = ( ( ( ps_dec -> u2_pic_wd ) >> 4 ) % ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) ) ; UWORD16 ui16_lastmbs_widthY = ( uc_lastmbs ? ( uc_lastmbs << 4 ) : ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) << 4 ) ) ; UWORD16 ui16_lastmbs_widthUV = uc_lastmbs ? ( uc_lastmbs << 3 ) : ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) << 3 ) ; ps_dec -> s_tran_addrecon . pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_dec -> s_tran_addrecon . pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_dec -> s_tran_addrecon . pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_dec -> s_tran_addrecon . u2_frm_wd_y = ps_dec -> u2_frm_wd_y << u1_field_pic_flag ; ps_dec -> s_tran_addrecon . u2_frm_wd_uv = ps_dec -> u2_frm_wd_uv << u1_field_pic_flag ; if ( u1_field_pic_flag ) { ui16_lastmbs_widthY += ps_dec -> u2_frm_wd_y ; ui16_lastmbs_widthUV += ps_dec -> u2_frm_wd_uv ; } ps_dec -> s_tran_addrecon . u4_inc_y [ 0 ] = ( ( ps_dec -> u1_recon_mb_grp << 4 ) >> u1_mbaff ) ; ps_dec -> s_tran_addrecon . u4_inc_uv [ 0 ] = ( ( ps_dec -> u1_recon_mb_grp << 4 ) >> u1_mbaff ) ; ps_dec -> s_tran_addrecon . u4_inc_y [ 1 ] = ( ui16_lastmbs_widthY + ( PAD_LEN_Y_H << 1 ) + ps_dec -> s_tran_addrecon . u2_frm_wd_y * ( ( 15 << u1_mbaff ) + u1_mbaff ) ) ; ps_dec -> s_tran_addrecon . u4_inc_uv [ 1 ] = ( ui16_lastmbs_widthUV + ( PAD_LEN_UV_H << 2 ) + ps_dec -> s_tran_addrecon . u2_frm_wd_uv * ( ( 15 << u1_mbaff ) + u1_mbaff ) ) ; ih264d_assign_pic_num ( ps_dec ) ; ps_dec -> s_tran_addrecon . u2_mv_top_left_inc = ( ps_dec -> u1_recon_mb_grp << 2 ) - 1 - ( u1_mbaff << 2 ) ; ps_dec -> s_tran_addrecon . u2_mv_left_inc = ( ( ps_dec -> u1_recon_mb_grp >> u1_mbaff ) - 1 ) << ( 4 + u1_mbaff ) ; } if ( ps_seq -> u1_profile_idc == HIGH_PROFILE_IDC ) { if ( ( ps_seq -> i4_seq_scaling_matrix_present_flag ) || ( ps_pps -> i4_pic_scaling_matrix_present_flag ) ) { ih264d_form_scaling_matrix_picture ( ps_seq , ps_pps , ps_dec ) ; ps_dec -> s_high_profile . u1_scaling_present = 1 ; } else { ih264d_form_default_scaling_matrix ( ps_dec ) ; } if ( ps_pps -> i4_transform_8x8_mode_flag ) { ps_dec -> s_high_profile . u1_transform8x8_present = 1 ; } } else { ih264d_form_default_scaling_matrix ( ps_dec ) ; } ps_dec -> s_high_profile . u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; ps_dec -> s_high_profile . s_cavlc_ctxt = ps_dec -> s_cavlc_ctxt ; ps_dec -> i1_recon_in_thread3_flag = 1 ; ps_dec -> ps_frame_buf_ip_recon = & ps_dec -> s_tran_addrecon ; if ( ps_dec -> u1_separate_parse ) { memcpy ( & ps_dec -> s_tran_addrecon_parse , & ps_dec -> s_tran_addrecon , sizeof ( tfr_ctxt_t ) ) ; if ( ps_dec -> u4_num_cores >= 3 && ps_dec -> i1_recon_in_thread3_flag ) { memcpy ( & ps_dec -> s_tran_iprecon , & ps_dec -> s_tran_addrecon , sizeof ( tfr_ctxt_t ) ) ; ps_dec -> ps_frame_buf_ip_recon = & ps_dec -> s_tran_iprecon ; } } ih264d_init_deblk_tfr_ctxt ( ps_dec , & ( ps_dec -> s_pad_mgr ) , & ( ps_dec -> s_tran_addrecon ) , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; ps_dec -> ps_cur_deblk_mb = ps_dec -> ps_deblk_pic ; ps_dec -> u4_cur_deblk_mb_num = 0 ; ps_dec -> u4_deblk_mb_x = 0 ; ps_dec -> u4_deblk_mb_y = 0 ; <S2SV_StartBug> H264_MUTEX_UNLOCK ( & ps_dec -> process_disp_mutex ) ; <S2SV_EndBug> return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; ps_dec -> pu4_wt_ofsts = ps_dec -> pu4_wts_ofsts_mat ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 void Con_Dump_f ( void ) { int l , x , i ; short * line ; fileHandle_t f ; int bufferlen ; char * buffer ; char filename [ MAX_QPATH ] ; if ( Cmd_Argc ( ) != 2 ) { Com_Printf ( \"usage:<S2SV_blank>condump<S2SV_blank><filename>\\\\n\" ) ; return ; } Q_strncpyz ( filename , Cmd_Argv ( 1 ) , sizeof ( filename ) ) ; <S2SV_StartBug> COM_DefaultExtension ( filename , sizeof ( filename ) , \".txt\" ) ; <S2SV_EndBug> f = FS_FOpenFileWrite ( filename ) ; if ( ! f ) { Com_Printf ( \"ERROR:<S2SV_blank>couldn\\'t<S2SV_blank>open<S2SV_blank>%s.\\\\n\" , filename ) ; return ; } Com_Printf ( \"Dumped<S2SV_blank>console<S2SV_blank>text<S2SV_blank>to<S2SV_blank>%s.\\\\n\" , filename ) ; for ( l = con . current - con . totallines + 1 ; l <= con . current ; l ++ ) { line = con . text + ( l % con . totallines ) * con . linewidth ; for ( x = 0 ; x < con . linewidth ; x ++ ) if ( ( line [ x ] & 0xff ) != '<S2SV_blank>' ) { break ; } if ( x != con . linewidth ) { break ; } } # ifdef _WIN32 bufferlen = con . linewidth + 3 * sizeof ( char ) ; # else bufferlen = con . linewidth + 2 * sizeof ( char ) ; # endif buffer = Hunk_AllocateTempMemory ( bufferlen ) ; buffer [ bufferlen - 1 ] = 0 ; for ( ; l <= con . current ; l ++ ) { line = con . text + ( l % con . totallines ) * con . linewidth ; for ( i = 0 ; i < con . linewidth ; i ++ ) buffer [ i ] = line [ i ] & 0xff ; for ( x = con . linewidth - 1 ; x >= 0 ; x -- ) { if ( buffer [ x ] == '<S2SV_blank>' ) { buffer [ x ] = 0 ; } else { break ; } } # ifdef _WIN32 Q_strcat ( buffer , bufferlen , \"\\\\r\\\\n\" ) ; # else Q_strcat ( buffer , bufferlen , \"\\\\n\" ) ; # endif FS_Write ( buffer , strlen ( buffer ) , f ) ; } Hunk_FreeTempMemory ( buffer ) ; FS_FCloseFile ( f ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \".txt\" ) ; if ( ! COM_CompareExtension ( filename , \".txt\" ) ) { Com_Printf ( \"Con_Dump_f:<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>\\\\\".txt\\\\\"<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>this<S2SV_blank>command!\\\\n\" ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-89(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0036\n\n```\nCWE-89 char * curl_easy_escape ( CURL * handle , const char * string , int inlength ) { size_t alloc = ( inlength ? ( size_t ) inlength : strlen ( string ) ) + 1 ; char * ns ; char * testing_ptr = NULL ; unsigned char in ; size_t newlen = alloc ; <S2SV_StartBug> int strindex = 0 ; <S2SV_EndBug> size_t length ; CURLcode res ; ns = malloc ( alloc ) ; if ( ! ns ) return NULL ; length = alloc - 1 ; while ( length -- ) { in = * string ; if ( Curl_isunreserved ( in ) ) ns [ strindex ++ ] = in ; else { newlen += 2 ; if ( newlen > alloc ) { alloc *= 2 ; testing_ptr = realloc ( ns , alloc ) ; if ( ! testing_ptr ) { free ( ns ) ; return NULL ; } else { ns = testing_ptr ; } } res = Curl_convert_to_network ( handle , & in , 1 ) ; if ( res ) { free ( ns ) ; return NULL ; } snprintf ( & ns [ strindex ] , 4 , \"%%%02X\" , in ) ; strindex += 3 ; } string ++ ; } ns [ strindex ] = 0 ; return ns ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = alloc ; size_t <S2SV_ModEnd> strindex = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static bool states_equal ( struct bpf_verifier_env * env , struct bpf_verifier_state * old , struct bpf_verifier_state * cur ) { int i ; <S2SV_StartBug> if ( old -> curframe != cur -> curframe ) <S2SV_EndBug> return false ; for ( i = 0 ; i <= old -> curframe ; i ++ ) { if ( old -> frame [ i ] -> callsite != cur -> frame [ i ] -> callsite ) return false ; if ( ! func_states_equal ( old -> frame [ i ] , cur -> frame [ i ] ) ) return false ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cur -> curframe ) return false ; if ( old -> speculative && ! cur -> speculative\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10051\n\n```\nCWE-416 static Image * ReadPWPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { FILE * file ; Image * image , * next_image , * pwp_image ; ImageInfo * read_info ; int c , unique_file ; MagickBooleanType status ; register Image * p ; register ssize_t i ; size_t filesize , length ; ssize_t count ; unsigned char magick [ MagickPathExtent ] ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; pwp_image = AcquireImage ( image_info , exception ) ; image = pwp_image ; status = OpenBlob ( image_info , pwp_image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) return ( ( Image * ) NULL ) ; count = ReadBlob ( pwp_image , 5 , magick ) ; if ( ( count != 5 ) || ( LocaleNCompare ( ( char * ) magick , \"SFW95\" , 5 ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; read_info = CloneImageInfo ( image_info ) ; ( void ) SetImageInfoProgressMonitor ( read_info , ( MagickProgressMonitor ) NULL , ( void * ) NULL ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; unique_file = AcquireUniqueFileResource ( read_info -> filename ) ; for ( ; ; ) { for ( c = ReadBlobByte ( pwp_image ) ; c != EOF ; c = ReadBlobByte ( pwp_image ) ) { for ( i = 0 ; i < 17 ; i ++ ) magick [ i ] = magick [ i + 1 ] ; magick [ 17 ] = ( unsigned char ) c ; if ( LocaleNCompare ( ( char * ) ( magick + 12 ) , \"SFW94A\" , 6 ) == 0 ) break ; } if ( c == EOF ) break ; if ( LocaleNCompare ( ( char * ) ( magick + 12 ) , \"SFW94A\" , 6 ) != 0 ) { ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } file = ( FILE * ) NULL ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( ( unique_file == - 1 ) || ( file == ( FILE * ) NULL ) ) { ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToWriteFile\" , image -> filename ) ; image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } length = fwrite ( \"SFW94A\" , 1 , 6 , file ) ; ( void ) length ; filesize = 65535UL * magick [ 2 ] + 256L * magick [ 1 ] + magick [ 0 ] ; for ( i = 0 ; i < ( ssize_t ) filesize ; i ++ ) { c = ReadBlobByte ( pwp_image ) ; ( void ) fputc ( c , file ) ; } ( void ) fclose ( file ) ; next_image = ReadImage ( read_info , exception ) ; if ( next_image == ( Image * ) NULL ) break ; ( void ) FormatLocaleString ( next_image -> filename , MagickPathExtent , \"slide_%02ld.sfw\" , ( long ) next_image -> scene ) ; if ( image == ( Image * ) NULL ) image = next_image ; else { for ( p = image ; p -> next != ( Image * ) NULL ; p = GetNextImageInList ( p ) ) ; next_image -> previous = p ; next_image -> scene = p -> scene + 1 ; p -> next = next_image ; } if ( image_info -> number_scenes != 0 ) if ( next_image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( pwp_image ) , GetBlobSize ( pwp_image ) ) ; if ( status == MagickFalse ) break ; } if ( unique_file != - 1 ) ( void ) close ( unique_file ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; read_info = DestroyImageInfo ( read_info ) ; <S2SV_StartBug> ( void ) CloseBlob ( pwp_image ) ; <S2SV_EndBug> pwp_image = DestroyImage ( pwp_image ) ; if ( EOFBlob ( image ) != MagickFalse ) { char * message ; message = GetExceptionMessage ( errno ) ; ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"UnexpectedEndOfFile\" , \"`%s\\':<S2SV_blank>%s\" , image -> filename , message ) ; message = DestroyString ( message ) ; } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> read_info ) ; <S2SV_ModEnd> if ( EOFBlob\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7480\n\n```\nCWE-119 SPL_METHOD ( SplObjectStorage , unserialize ) { spl_SplObjectStorage * intern = Z_SPLOBJSTORAGE_P ( getThis ( ) ) ; char * buf ; size_t buf_len ; const unsigned char * p , * s ; php_unserialize_data_t var_hash ; zval entry , inf ; zval * pcount , * pmembers ; spl_SplObjectStorageElement * element ; zend_long count ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) , \"s\" , & buf , & buf_len ) == FAILURE ) { return ; } if ( buf_len == 0 ) { return ; } s = p = ( const unsigned char * ) buf ; PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; if ( * p != 'x' || * ++ p != ':' ) { goto outexcept ; } ++ p ; pcount = var_tmp_var ( & var_hash ) ; if ( ! php_var_unserialize ( pcount , & p , s + buf_len , & var_hash ) || Z_TYPE_P ( pcount ) != IS_LONG ) { goto outexcept ; } -- p ; <S2SV_StartBug> count = Z_LVAL_P ( pcount ) ; <S2SV_EndBug> while ( count -- > 0 ) { spl_SplObjectStorageElement * pelement ; zend_string * hash ; if ( * p != ';' ) { goto outexcept ; } ++ p ; if ( * p != 'O' && * p != 'C' && * p != 'r' ) { goto outexcept ; } if ( ! php_var_unserialize ( & entry , & p , s + buf_len , & var_hash ) ) { goto outexcept ; } <S2SV_StartBug> if ( Z_TYPE ( entry ) != IS_OBJECT ) { <S2SV_EndBug> zval_ptr_dtor ( & entry ) ; goto outexcept ; } if ( * p == ',' ) { ++ p ; if ( ! php_var_unserialize ( & inf , & p , s + buf_len , & var_hash ) ) { zval_ptr_dtor ( & entry ) ; goto outexcept ; } <S2SV_StartBug> } else { <S2SV_EndBug> ZVAL_UNDEF ( & inf ) ; } hash = spl_object_storage_get_hash ( intern , getThis ( ) , & entry ) ; if ( ! hash ) { zval_ptr_dtor ( & entry ) ; zval_ptr_dtor ( & inf ) ; goto outexcept ; } pelement = spl_object_storage_get ( intern , hash ) ; spl_object_storage_free_hash ( intern , hash ) ; if ( pelement ) { if ( ! Z_ISUNDEF ( pelement -> inf ) ) { var_push_dtor ( & var_hash , & pelement -> inf ) ; } if ( ! Z_ISUNDEF ( pelement -> obj ) ) { var_push_dtor ( & var_hash , & pelement -> obj ) ; } } element = spl_object_storage_attach ( intern , getThis ( ) , & entry , Z_ISUNDEF ( inf ) ? NULL : & inf ) ; var_replace ( & var_hash , & entry , & element -> obj ) ; var_replace ( & var_hash , & inf , & element -> inf ) ; zval_ptr_dtor ( & entry ) ; ZVAL_UNDEF ( & entry ) ; zval_ptr_dtor ( & inf ) ; ZVAL_UNDEF ( & inf ) ; } if ( * p != ';' ) { goto outexcept ; } ++ p ; if ( * p != 'm' || * ++ p != ':' ) { goto outexcept ; } ++ p ; pmembers = var_tmp_var ( & var_hash ) ; if ( ! php_var_unserialize ( pmembers , & p , s + buf_len , & var_hash ) || Z_TYPE_P ( pmembers ) != IS_ARRAY ) { goto outexcept ; } object_properties_load ( & intern -> std , Z_ARRVAL_P ( pmembers ) ) ; PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; return ; outexcept : PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; zend_throw_exception_ex ( spl_ce_UnexpectedValueException , 0 , \"Error<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%pd<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , ( zend_long ) ( ( char * ) p - buf ) , buf_len ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Z_LVAL_P ( pcount ) ; ZVAL_UNDEF ( & entry ) ; ZVAL_UNDEF ( & inf <S2SV_ModStart> } if ( <S2SV_ModEnd> * p == <S2SV_ModStart> ; } } if ( Z_TYPE ( entry ) != IS_OBJECT ) { zval_ptr_dtor ( & entry ) ; zval_ptr_dtor ( & inf ) ; goto outexcept <S2SV_ModEnd> ; } hash\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8104\n\n```\nCWE-399 static void init_vmcb ( struct vcpu_svm * svm ) { struct vmcb_control_area * control = & svm -> vmcb -> control ; struct vmcb_save_area * save = & svm -> vmcb -> save ; svm -> vcpu . fpu_active = 1 ; svm -> vcpu . arch . hflags = 0 ; set_cr_intercept ( svm , INTERCEPT_CR0_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR3_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR4_READ ) ; set_cr_intercept ( svm , INTERCEPT_CR0_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR3_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR4_WRITE ) ; set_cr_intercept ( svm , INTERCEPT_CR8_WRITE ) ; set_dr_intercepts ( svm ) ; set_exception_intercept ( svm , PF_VECTOR ) ; set_exception_intercept ( svm , UD_VECTOR ) ; set_exception_intercept ( svm , MC_VECTOR ) ; <S2SV_StartBug> set_exception_intercept ( svm , AC_VECTOR ) ; <S2SV_EndBug> set_intercept ( svm , INTERCEPT_INTR ) ; set_intercept ( svm , INTERCEPT_NMI ) ; set_intercept ( svm , INTERCEPT_SMI ) ; set_intercept ( svm , INTERCEPT_SELECTIVE_CR0 ) ; set_intercept ( svm , INTERCEPT_RDPMC ) ; set_intercept ( svm , INTERCEPT_CPUID ) ; set_intercept ( svm , INTERCEPT_INVD ) ; set_intercept ( svm , INTERCEPT_HLT ) ; set_intercept ( svm , INTERCEPT_INVLPG ) ; set_intercept ( svm , INTERCEPT_INVLPGA ) ; set_intercept ( svm , INTERCEPT_IOIO_PROT ) ; set_intercept ( svm , INTERCEPT_MSR_PROT ) ; set_intercept ( svm , INTERCEPT_TASK_SWITCH ) ; set_intercept ( svm , INTERCEPT_SHUTDOWN ) ; set_intercept ( svm , INTERCEPT_VMRUN ) ; set_intercept ( svm , INTERCEPT_VMMCALL ) ; set_intercept ( svm , INTERCEPT_VMLOAD ) ; set_intercept ( svm , INTERCEPT_VMSAVE ) ; set_intercept ( svm , INTERCEPT_STGI ) ; set_intercept ( svm , INTERCEPT_CLGI ) ; set_intercept ( svm , INTERCEPT_SKINIT ) ; set_intercept ( svm , INTERCEPT_WBINVD ) ; set_intercept ( svm , INTERCEPT_MONITOR ) ; set_intercept ( svm , INTERCEPT_MWAIT ) ; set_intercept ( svm , INTERCEPT_XSETBV ) ; control -> iopm_base_pa = iopm_base ; control -> msrpm_base_pa = __pa ( svm -> msrpm ) ; control -> int_ctl = V_INTR_MASKING_MASK ; init_seg ( & save -> es ) ; init_seg ( & save -> ss ) ; init_seg ( & save -> ds ) ; init_seg ( & save -> fs ) ; init_seg ( & save -> gs ) ; save -> cs . selector = 0xf000 ; save -> cs . base = 0xffff0000 ; save -> cs . attrib = SVM_SELECTOR_READ_MASK | SVM_SELECTOR_P_MASK | SVM_SELECTOR_S_MASK | SVM_SELECTOR_CODE_MASK ; save -> cs . limit = 0xffff ; save -> gdtr . limit = 0xffff ; save -> idtr . limit = 0xffff ; init_sys_seg ( & save -> ldtr , SEG_TYPE_LDT ) ; init_sys_seg ( & save -> tr , SEG_TYPE_BUSY_TSS16 ) ; svm_set_efer ( & svm -> vcpu , 0 ) ; save -> dr6 = 0xffff0ff0 ; kvm_set_rflags ( & svm -> vcpu , 2 ) ; save -> rip = 0x0000fff0 ; svm -> vcpu . arch . regs [ VCPU_REGS_RIP ] = save -> rip ; svm_set_cr0 ( & svm -> vcpu , X86_CR0_NW | X86_CR0_CD | X86_CR0_ET ) ; kvm_mmu_reset_context ( & svm -> vcpu ) ; save -> cr4 = X86_CR4_PAE ; if ( npt_enabled ) { control -> nested_ctl = 1 ; clr_intercept ( svm , INTERCEPT_INVLPG ) ; clr_exception_intercept ( svm , PF_VECTOR ) ; clr_cr_intercept ( svm , INTERCEPT_CR3_READ ) ; clr_cr_intercept ( svm , INTERCEPT_CR3_WRITE ) ; save -> g_pat = svm -> vcpu . arch . pat ; save -> cr3 = 0 ; save -> cr4 = 0 ; } svm -> asid_generation = 0 ; svm -> nested . vmcb = 0 ; svm -> vcpu . arch . hflags = 0 ; if ( boot_cpu_has ( X86_FEATURE_PAUSEFILTER ) ) { control -> pause_filter_count = 3000 ; set_intercept ( svm , INTERCEPT_PAUSE ) ; } mark_all_dirty ( svm -> vmcb ) ; enable_gif ( svm ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> svm , AC_VECTOR ) ; set_exception_intercept ( svm , DB_VECTOR\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-7308\n\n```\nCWE-189 static int fixup_bpf_calls ( struct bpf_verifier_env * env ) { struct bpf_prog * prog = env -> prog ; struct bpf_insn * insn = prog -> insnsi ; const struct bpf_func_proto * fn ; const int insn_cnt = prog -> len ; const struct bpf_map_ops * ops ; struct bpf_insn_aux_data * aux ; struct bpf_insn insn_buf [ 16 ] ; struct bpf_prog * new_prog ; struct bpf_map * map_ptr ; int i , cnt , delta = 0 ; for ( i = 0 ; i < insn_cnt ; i ++ , insn ++ ) { if ( insn -> code == ( BPF_ALU64 | BPF_MOD | BPF_X ) || insn -> code == ( BPF_ALU64 | BPF_DIV | BPF_X ) || insn -> code == ( BPF_ALU | BPF_MOD | BPF_X ) || insn -> code == ( BPF_ALU | BPF_DIV | BPF_X ) ) { bool is64 = BPF_CLASS ( insn -> code ) == BPF_ALU64 ; struct bpf_insn mask_and_div [ ] = { BPF_MOV32_REG ( insn -> src_reg , insn -> src_reg ) , BPF_JMP_IMM ( BPF_JNE , insn -> src_reg , 0 , 2 ) , BPF_ALU32_REG ( BPF_XOR , insn -> dst_reg , insn -> dst_reg ) , BPF_JMP_IMM ( BPF_JA , 0 , 0 , 1 ) , * insn , } ; struct bpf_insn mask_and_mod [ ] = { BPF_MOV32_REG ( insn -> src_reg , insn -> src_reg ) , BPF_JMP_IMM ( BPF_JEQ , insn -> src_reg , 0 , 1 ) , * insn , } ; struct bpf_insn * patchlet ; if ( insn -> code == ( BPF_ALU64 | BPF_DIV | BPF_X ) || insn -> code == ( BPF_ALU | BPF_DIV | BPF_X ) ) { patchlet = mask_and_div + ( is64 ? 1 : 0 ) ; cnt = ARRAY_SIZE ( mask_and_div ) - ( is64 ? 1 : 0 ) ; } else { patchlet = mask_and_mod + ( is64 ? 1 : 0 ) ; cnt = ARRAY_SIZE ( mask_and_mod ) - ( is64 ? 1 : 0 ) ; } new_prog = bpf_patch_insn_data ( env , i + delta , patchlet , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } if ( BPF_CLASS ( insn -> code ) == BPF_LD && ( BPF_MODE ( insn -> code ) == BPF_ABS || BPF_MODE ( insn -> code ) == BPF_IND ) ) { cnt = env -> ops -> gen_ld_abs ( insn , insn_buf ) ; if ( cnt == 0 || cnt >= ARRAY_SIZE ( insn_buf ) ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } <S2SV_StartBug> if ( insn -> code != ( BPF_JMP | BPF_CALL ) ) <S2SV_EndBug> continue ; if ( insn -> src_reg == BPF_PSEUDO_CALL ) continue ; if ( insn -> imm == BPF_FUNC_get_route_realm ) prog -> dst_needed = 1 ; if ( insn -> imm == BPF_FUNC_get_prandom_u32 ) bpf_user_rnd_init_once ( ) ; if ( insn -> imm == BPF_FUNC_override_return ) prog -> kprobe_override = 1 ; if ( insn -> imm == BPF_FUNC_tail_call ) { prog -> cb_access = 1 ; env -> prog -> aux -> stack_depth = MAX_BPF_STACK ; env -> prog -> aux -> max_pkt_offset = MAX_PACKET_OFF ; insn -> imm = 0 ; insn -> code = BPF_JMP | BPF_TAIL_CALL ; aux = & env -> insn_aux_data [ i + delta ] ; <S2SV_StartBug> if ( ! bpf_map_ptr_unpriv ( aux ) ) <S2SV_EndBug> continue ; <S2SV_StartBug> if ( bpf_map_ptr_poisoned ( aux ) ) { <S2SV_EndBug> verbose ( env , \"tail_call<S2SV_blank>abusing<S2SV_blank>map_ptr\\\\n\" ) ; return - EINVAL ; } map_ptr = BPF_MAP_PTR ( aux -> map_state ) ; insn_buf [ 0 ] = BPF_JMP_IMM ( BPF_JGE , BPF_REG_3 , map_ptr -> max_entries , 2 ) ; insn_buf [ 1 ] = BPF_ALU32_IMM ( BPF_AND , BPF_REG_3 , container_of ( map_ptr , struct bpf_array , map ) -> index_mask ) ; insn_buf [ 2 ] = * insn ; cnt = 3 ; new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } <S2SV_StartBug> if ( prog -> jit_requested && BITS_PER_LONG == 64 && <S2SV_EndBug> ( insn -> imm == BPF_FUNC_map_lookup_elem || insn -> imm == BPF_FUNC_map_update_elem || insn -> imm == BPF_FUNC_map_delete_elem || insn -> imm == BPF_FUNC_map_push_elem || insn -> imm == BPF_FUNC_map_pop_elem || insn -> imm == BPF_FUNC_map_peek_elem ) ) { aux = & env -> insn_aux_data [ i + delta ] ; <S2SV_StartBug> if ( bpf_map_ptr_poisoned ( aux ) ) <S2SV_EndBug> <S2SV_StartBug> goto patch_call_imm ; <S2SV_EndBug> map_ptr = BPF_MAP_PTR ( aux -> map_state ) ; <S2SV_StartBug> ops = map_ptr -> ops ; <S2SV_EndBug> if ( insn -> imm == BPF_FUNC_map_lookup_elem && ops -> map_gen_lookup ) { <S2SV_StartBug> cnt = ops -> map_gen_lookup ( map_ptr , insn_buf ) ; <S2SV_EndBug> if ( cnt == 0 || cnt >= ARRAY_SIZE ( insn_buf ) ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; } <S2SV_StartBug> BUILD_BUG_ON ( ! __same_type ( ops -> map_lookup_elem , <S2SV_EndBug> ( void * ( * ) ( struct bpf_map * map , void * key ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_delete_elem , ( int ( * ) ( struct bpf_map * map , void * key ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_update_elem , ( int ( * ) ( struct bpf_map * map , void * key , void * value , u64 flags ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_push_elem , ( int ( * ) ( struct bpf_map * map , void * value , u64 flags ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_pop_elem , ( int ( * ) ( struct bpf_map * map , void * value ) ) NULL ) ) ; BUILD_BUG_ON ( ! __same_type ( ops -> map_peek_elem , ( int ( * ) ( struct bpf_map * map , void * value ) ) NULL ) ) ; switch ( insn -> imm ) { case BPF_FUNC_map_lookup_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_lookup_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_update_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_update_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_delete_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_delete_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_push_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_push_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_pop_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_pop_elem ) - __bpf_call_base ; continue ; case BPF_FUNC_map_peek_elem : insn -> imm = BPF_CAST_CALL ( ops -> map_peek_elem ) - __bpf_call_base ; continue ; } goto patch_call_imm ; } patch_call_imm : fn = env -> ops -> get_func_proto ( insn -> imm , env -> prog ) ; if ( ! fn -> func ) { verbose ( env , \"kernel<S2SV_blank>subsystem<S2SV_blank>misconfigured<S2SV_blank>func<S2SV_blank>%s#%d\\\\n\" , func_id_name ( insn -> imm ) , insn -> imm ) ; return - EFAULT ; } insn -> imm = fn -> func - __bpf_call_base ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> insn -> code == ( BPF_ALU64 | BPF_ADD | BPF_X ) || insn -> code == ( BPF_ALU64 | BPF_SUB | BPF_X ) ) { const u8 code_add = BPF_ALU64 | BPF_ADD | BPF_X ; const u8 code_sub = BPF_ALU64 | BPF_SUB | BPF_X ; struct bpf_insn insn_buf [ 16 ] ; struct bpf_insn * patch = & insn_buf [ 0 ] ; bool issrc , isneg ; u32 off_reg <S2SV_ModEnd> ; aux = <S2SV_ModStart> if ( ! aux -> alu_state <S2SV_ModEnd> ) continue ; <S2SV_ModStart> ) continue ; isneg = aux -> alu_state & BPF_ALU_NEG_VALUE ; issrc = ( aux -> alu_state & BPF_ALU_SANITIZE ) == BPF_ALU_SANITIZE_SRC ; off_reg = issrc ? insn -> src_reg : insn -> dst_reg ; if ( isneg ) * patch ++ = BPF_ALU64_IMM ( BPF_MUL , off_reg , - 1 ) ; * patch ++ = BPF_MOV32_IMM ( BPF_REG_AX , aux -> alu_limit - 1 ) ; * patch ++ = BPF_ALU64_REG ( BPF_SUB , BPF_REG_AX , off_reg ) ; * patch ++ = BPF_ALU64_REG ( BPF_OR , BPF_REG_AX , off_reg ) ; * patch ++ = BPF_ALU64_IMM ( BPF_NEG , BPF_REG_AX , 0 ) ; * patch ++ = BPF_ALU64_IMM ( BPF_ARSH , BPF_REG_AX , 63 ) ; if ( issrc ) { * patch ++ = BPF_ALU64_REG ( BPF_AND , BPF_REG_AX , off_reg ) ; insn -> src_reg = BPF_REG_AX ; } else { * patch ++ = BPF_ALU64_REG ( BPF_AND , off_reg , BPF_REG_AX ) ; } if ( isneg ) insn -> code = insn -> code == code_add ? code_sub : code_add ; * patch ++ = * insn ; if ( issrc && isneg ) * patch ++ = BPF_ALU64_IMM ( BPF_MUL , off_reg , - 1 ) ; cnt = patch - insn_buf <S2SV_ModEnd> ; new_prog = <S2SV_ModStart> } if ( insn -> code != ( BPF_JMP | BPF_CALL ) ) continue ; if ( insn -> src_reg == BPF_PSEUDO_CALL ) continue ; if ( insn -> imm == BPF_FUNC_get_route_realm ) prog -> dst_needed = 1 ; if ( insn -> imm == BPF_FUNC_get_prandom_u32 ) bpf_user_rnd_init_once ( ) ; if ( insn -> imm == BPF_FUNC_override_return ) prog -> kprobe_override = 1 ; if ( insn -> imm == BPF_FUNC_tail_call ) { prog -> cb_access = 1 ; env -> prog -> aux -> stack_depth = MAX_BPF_STACK ; env -> prog -> aux -> max_pkt_offset = MAX_PACKET_OFF ; insn -> imm = 0 ; insn -> code = BPF_JMP | BPF_TAIL_CALL ; <S2SV_ModEnd> aux = & <S2SV_ModStart> ; if ( ! bpf_map_ptr_unpriv ( aux ) ) continue ; if ( <S2SV_ModStart> aux ) ) { verbose ( env , \"tail_call<S2SV_blank>abusing<S2SV_blank>map_ptr\\\\n\" ) ; return - EINVAL ; } <S2SV_ModEnd> map_ptr = BPF_MAP_PTR <S2SV_ModStart> map_state ) ; insn_buf [ 0 ] = BPF_JMP_IMM ( BPF_JGE , BPF_REG_3 , map_ptr -> max_entries , 2 ) ; insn_buf [ 1 ] = BPF_ALU32_IMM ( BPF_AND , BPF_REG_3 , container_of <S2SV_ModEnd> ( map_ptr , <S2SV_ModStart> ( map_ptr , struct bpf_array , map ) -> index_mask ) ; insn_buf [ 2 ] = * insn ; cnt = 3 ; <S2SV_ModEnd> new_prog = bpf_patch_insn_data <S2SV_ModStart> continue ; } if ( prog -> jit_requested && BITS_PER_LONG == 64 && ( insn -> imm == BPF_FUNC_map_lookup_elem || insn -> imm == BPF_FUNC_map_update_elem || insn -> imm == BPF_FUNC_map_delete_elem || insn -> imm == BPF_FUNC_map_push_elem || insn -> imm == BPF_FUNC_map_pop_elem || insn -> imm == BPF_FUNC_map_peek_elem ) ) { aux = & env -> insn_aux_data [ i + delta ] ; if ( bpf_map_ptr_poisoned ( aux ) ) goto patch_call_imm ; map_ptr = BPF_MAP_PTR ( aux -> map_state ) ; ops = map_ptr -> ops ; if ( insn -> imm == BPF_FUNC_map_lookup_elem && ops -> map_gen_lookup ) { cnt = ops -> map_gen_lookup ( map_ptr , insn_buf ) ; if ( cnt == 0 || cnt >= ARRAY_SIZE ( insn_buf ) ) { verbose ( env , \"bpf<S2SV_blank>verifier<S2SV_blank>is<S2SV_blank>misconfigured\\\\n\" ) ; return - EINVAL ; } new_prog = bpf_patch_insn_data ( env , i + delta , insn_buf , cnt ) ; if ( ! new_prog ) return - ENOMEM ; delta += cnt - 1 ; env -> prog = prog = new_prog ; insn = new_prog -> insnsi + i + delta ; continue ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4036\n\n```\nCWE-119 static struct se_portal_group * vhost_scsi_make_tpg ( struct se_wwn * wwn , struct config_group * group , const char * name ) { struct vhost_scsi_tport * tport = container_of ( wwn , struct vhost_scsi_tport , tport_wwn ) ; struct vhost_scsi_tpg * tpg ; <S2SV_StartBug> unsigned long tpgt ; <S2SV_EndBug> int ret ; if ( strstr ( name , \"tpgt_\" ) != name ) return ERR_PTR ( - EINVAL ) ; <S2SV_StartBug> if ( kstrtoul ( name + 5 , 10 , & tpgt ) || tpgt > UINT_MAX ) <S2SV_EndBug> return ERR_PTR ( - EINVAL ) ; tpg = kzalloc ( sizeof ( struct vhost_scsi_tpg ) , GFP_KERNEL ) ; if ( ! tpg ) { pr_err ( \"Unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>struct<S2SV_blank>vhost_scsi_tpg\" ) ; return ERR_PTR ( - ENOMEM ) ; } mutex_init ( & tpg -> tv_tpg_mutex ) ; INIT_LIST_HEAD ( & tpg -> tv_tpg_list ) ; tpg -> tport = tport ; tpg -> tport_tpgt = tpgt ; ret = core_tpg_register ( & vhost_scsi_fabric_configfs -> tf_ops , wwn , & tpg -> se_tpg , tpg , TRANSPORT_TPG_TYPE_NORMAL ) ; if ( ret < 0 ) { kfree ( tpg ) ; return NULL ; } mutex_lock ( & vhost_scsi_mutex ) ; list_add_tail ( & tpg -> tv_tpg_list , & vhost_scsi_list ) ; mutex_unlock ( & vhost_scsi_mutex ) ; return & tpg -> se_tpg ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tpg ; u16 <S2SV_ModEnd> tpgt ; int <S2SV_ModStart> ; if ( kstrtou16 <S2SV_ModEnd> ( name + <S2SV_ModStart> ) || tpgt >= VHOST_SCSI_MAX_TARGET <S2SV_ModEnd> ) return ERR_PTR\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10677\n\n```\nCWE-787 static int DecodeGifImg ( struct ngiflib_img * i ) { struct ngiflib_decode_context context ; long npix ; u8 * stackp ; u8 * stack_top ; u16 clr ; u16 eof ; u16 free ; u16 act_code = 0 ; u16 old_code = 0 ; u16 read_byt ; u16 ab_prfx [ 4096 ] ; u8 ab_suffx [ 4096 ] ; u8 ab_stack [ 4096 ] ; u8 flags ; u8 casspecial = 0 ; if ( ! i ) return - 1 ; i -> posX = GetWord ( i -> parent ) ; i -> posY = GetWord ( i -> parent ) ; i -> width = GetWord ( i -> parent ) ; i -> height = GetWord ( i -> parent ) ; <S2SV_StartBug> context . Xtogo = i -> width ; <S2SV_EndBug> context . curY = i -> posY ; # ifdef NGIFLIB_INDEXED_ONLY # ifdef NGIFLIB_ENABLE_CALLBACKS context . line_p . p8 = i -> parent -> frbuff . p8 + ( u32 ) i -> posY * i -> parent -> width ; context . frbuff_p . p8 = context . line_p . p8 + i -> posX ; # else context . frbuff_p . p8 = i -> parent -> frbuff . p8 + ( u32 ) i -> posY * i -> parent -> width + i -> posX ; # endif # else if ( i -> parent -> mode & NGIFLIB_MODE_INDEXED ) { # ifdef NGIFLIB_ENABLE_CALLBACKS context . line_p . p8 = i -> parent -> frbuff . p8 + ( u32 ) i -> posY * i -> parent -> width ; context . frbuff_p . p8 = context . line_p . p8 + i -> posX ; # else context . frbuff_p . p8 = i -> parent -> frbuff . p8 + ( u32 ) i -> posY * i -> parent -> width + i -> posX ; # endif } else { # ifdef NGIFLIB_ENABLE_CALLBACKS context . line_p . p32 = i -> parent -> frbuff . p32 + ( u32 ) i -> posY * i -> parent -> width ; context . frbuff_p . p32 = context . line_p . p32 + i -> posX ; # else context . frbuff_p . p32 = i -> parent -> frbuff . p32 + ( u32 ) i -> posY * i -> parent -> width + i -> posX ; # endif } # endif npix = ( long ) i -> width * i -> height ; flags = GetByte ( i -> parent ) ; i -> interlaced = ( flags & 64 ) >> 6 ; context . pass = i -> interlaced ? 1 : 0 ; i -> sort_flag = ( flags & 32 ) >> 5 ; i -> localpalbits = ( flags & 7 ) + 1 ; if ( flags & 128 ) { int k ; int localpalsize = 1 << i -> localpalbits ; # if ! defined ( NGIFLIB_NO_FILE ) if ( i -> parent && i -> parent -> log ) fprintf ( i -> parent -> log , \"Local<S2SV_blank>palette\\\\n\" ) ; # endif i -> palette = ( struct ngiflib_rgb * ) ngiflib_malloc ( sizeof ( struct ngiflib_rgb ) * localpalsize ) ; for ( k = 0 ; k < localpalsize ; k ++ ) { i -> palette [ k ] . r = GetByte ( i -> parent ) ; i -> palette [ k ] . g = GetByte ( i -> parent ) ; i -> palette [ k ] . b = GetByte ( i -> parent ) ; } # ifdef NGIFLIB_ENABLE_CALLBACKS if ( i -> parent -> palette_cb ) i -> parent -> palette_cb ( i -> parent , i -> palette , localpalsize ) ; # endif } else { i -> palette = i -> parent -> palette ; i -> localpalbits = i -> parent -> imgbits ; } i -> ncolors = 1 << i -> localpalbits ; i -> imgbits = GetByte ( i -> parent ) ; # if ! defined ( NGIFLIB_NO_FILE ) if ( i -> parent && i -> parent -> log ) { if ( i -> interlaced ) fprintf ( i -> parent -> log , \"interlaced<S2SV_blank>\" ) ; fprintf ( i -> parent -> log , \"img<S2SV_blank>pos(%hu,%hu)<S2SV_blank>size<S2SV_blank>%hux%hu<S2SV_blank>palbits=%hhu<S2SV_blank>imgbits=%hhu<S2SV_blank>ncolors=%hu\\\\n\" , i -> posX , i -> posY , i -> width , i -> height , i -> localpalbits , i -> imgbits , i -> ncolors ) ; } # endif if ( i -> imgbits == 1 ) { i -> imgbits = 2 ; } clr = 1 << i -> imgbits ; eof = clr + 1 ; free = clr + 2 ; context . nbbit = i -> imgbits + 1 ; context . max = clr + clr - 1 ; stackp = stack_top = ab_stack + 4096 ; context . restbits = 0 ; context . restbyte = 0 ; context . lbyte = 0 ; for ( ; ; ) { act_code = GetGifWord ( i , & context ) ; if ( act_code == eof ) { # if ! defined ( NGIFLIB_NO_FILE ) if ( i -> parent && i -> parent -> log ) fprintf ( i -> parent -> log , \"End<S2SV_blank>of<S2SV_blank>image<S2SV_blank>code\\\\n\" ) ; # endif return 0 ; } if ( npix == 0 ) { # if ! defined ( NGIFLIB_NO_FILE ) if ( i -> parent && i -> parent -> log ) fprintf ( i -> parent -> log , \"assez<S2SV_blank>de<S2SV_blank>pixels,<S2SV_blank>On<S2SV_blank>se<S2SV_blank>casse<S2SV_blank>!\\\\n\" ) ; # endif return 1 ; } if ( act_code == clr ) { # if ! defined ( NGIFLIB_NO_FILE ) if ( i -> parent && i -> parent -> log ) fprintf ( i -> parent -> log , \"Code<S2SV_blank>clear<S2SV_blank>(free=%hu)<S2SV_blank>npix=%ld\\\\n\" , free , npix ) ; # endif free = clr + 2 ; context . nbbit = i -> imgbits + 1 ; context . max = clr + clr - 1 ; act_code = GetGifWord ( i , & context ) ; casspecial = ( u8 ) act_code ; old_code = act_code ; WritePixel ( i , & context , casspecial ) ; npix -- ; } else { read_byt = act_code ; if ( act_code >= free ) { * ( -- stackp ) = casspecial ; act_code = old_code ; } while ( act_code > clr ) { * ( -- stackp ) = ab_suffx [ act_code ] ; act_code = ab_prfx [ act_code ] ; } casspecial = ( u8 ) act_code ; * ( -- stackp ) = casspecial ; WritePixels ( i , & context , stackp , stack_top - stackp ) ; npix -= ( stack_top - stackp ) ; stackp = stack_top ; if ( free < 4096 ) { ab_prfx [ free ] = old_code ; ab_suffx [ free ] = ( u8 ) act_code ; free ++ ; if ( ( free > context . max ) && ( context . nbbit < 12 ) ) { context . nbbit ++ ; context . max += context . max + 1 ; } } old_code = read_byt ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> parent ) ; if ( ( i -> width > i -> parent -> width ) || ( i -> height > i -> parent -> height ) ) { # if ! defined ( NGIFLIB_NO_FILE ) if ( i -> parent -> log ) fprintf ( i -> parent -> log , \"***<S2SV_blank>ERROR<S2SV_blank>***<S2SV_blank>Image<S2SV_blank>bigger<S2SV_blank>than<S2SV_blank>global<S2SV_blank>GIF<S2SV_blank>canvas<S2SV_blank>!\\\\n\" ) ; # endif return - 1 ; } if ( ( i -> posX + i -> width ) > i -> parent -> width ) { # if ! defined ( NGIFLIB_NO_FILE ) if ( i -> parent -> log ) fprintf ( i -> parent -> log , \"***<S2SV_blank>WARNING<S2SV_blank>***<S2SV_blank>Adjusting<S2SV_blank>X<S2SV_blank>position\\\\n\" ) ; # endif i -> posX = i -> parent -> width - i -> width ; } if ( ( i -> posY + i -> height ) > i -> parent -> height ) { # if ! defined ( NGIFLIB_NO_FILE ) if ( i -> parent -> log ) fprintf ( i -> parent -> log , \"***<S2SV_blank>WARNING<S2SV_blank>***<S2SV_blank>Adjusting<S2SV_blank>Y<S2SV_blank>position\\\\n\" ) ; # endif i -> posY = i -> parent -> height - i -> height ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vpx_free ( void * memblk ) { if ( memblk ) { void * addr = ( void * ) ( ( ( size_t * ) memblk ) [ - 1 ] ) ; <S2SV_StartBug> # if CONFIG_MEM_MANAGER <S2SV_EndBug> hmm_free ( & hmm_d , addr ) ; # else VPX_FREE_L ( addr ) ; <S2SV_StartBug> # endif <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; free <S2SV_ModEnd> ( addr ) <S2SV_ModStart> addr ) ; <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-345(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20271\n\n```\nCWE-345 static <S2SV_StartBug> void headerMergeLegacySigs ( Header h , Header sigh ) <S2SV_EndBug> { HeaderIterator hi ; struct rpmtd_s td ; <S2SV_StartBug> hi = headerInitIterator ( sigh ) ; <S2SV_EndBug> for ( ; headerNext ( hi , & td ) ; rpmtdFreeData ( & td ) ) { switch ( td . tag ) { case RPMSIGTAG_SIZE : <S2SV_StartBug> td . tag = RPMTAG_SIGSIZE ; <S2SV_EndBug> break ; case RPMSIGTAG_PGP : <S2SV_StartBug> td . tag = RPMTAG_SIGPGP ; <S2SV_EndBug> break ; case RPMSIGTAG_MD5 : td . tag = RPMTAG_SIGMD5 ; break ; case RPMSIGTAG_GPG : td . tag = RPMTAG_SIGGPG ; break ; case RPMSIGTAG_PGP5 : td . tag = RPMTAG_SIGPGP5 ; break ; case RPMSIGTAG_PAYLOADSIZE : td . tag = RPMTAG_ARCHIVESIZE ; break ; case RPMSIGTAG_FILESIGNATURES : td . tag = RPMTAG_FILESIGNATURES ; break ; case RPMSIGTAG_FILESIGNATURELENGTH : td . tag = RPMTAG_FILESIGNATURELENGTH ; break ; case RPMSIGTAG_VERITYSIGNATURES : case RPMSIGTAG_VERITYSIGNATUREALGO : case RPMSIGTAG_SHA1 : case RPMSIGTAG_SHA256 : case RPMSIGTAG_DSA : case RPMSIGTAG_RSA : default : <S2SV_StartBug> if ( ! ( td . tag >= HEADER_SIGBASE && td . tag < HEADER_TAGBASE ) ) <S2SV_EndBug> continue ; break ; } <S2SV_StartBug> if ( ! headerIsEntry ( h , td . tag ) ) { <S2SV_EndBug> switch ( td . type ) { case RPM_NULL_TYPE : continue ; break ; case RPM_CHAR_TYPE : case RPM_INT8_TYPE : case RPM_INT16_TYPE : case RPM_INT32_TYPE : case RPM_INT64_TYPE : if ( td . count != 1 ) continue ; break ; case RPM_STRING_TYPE : case RPM_STRING_ARRAY_TYPE : case RPM_BIN_TYPE : if ( td . count >= 16 * 1024 ) continue ; break ; case RPM_I18NSTRING_TYPE : continue ; break ; } <S2SV_StartBug> ( void ) headerPut ( h , & td , HEADERPUT_DEFAULT ) ; <S2SV_EndBug> } } headerFreeIterator ( hi ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static rpmTagVal <S2SV_ModEnd> headerMergeLegacySigs ( Header <S2SV_ModStart> , Header sigh , char * * msg ) { const struct taglate_s * xl <S2SV_ModEnd> ; struct rpmtd_s <S2SV_ModStart> rpmtd_s td ; rpmtdReset ( & td ) ; for ( xl = xlateTags ; xl -> stag ; xl ++ ) { if ( headerIsEntry ( h , xl -> xtag ) ) break ; if ( headerGet ( sigh , xl -> stag , & td , HEADERGET_RAW | HEADERGET_MINMEM ) ) { if ( xl -> stag != xl -> xtag ) <S2SV_ModEnd> td . tag <S2SV_ModStart> . tag = xl -> xtag ; if ( td . type != rpmTagGetTagType ( <S2SV_ModEnd> td . tag <S2SV_ModStart> td . tag ) ) break ; if ( td . count < 1 || td . count > 16 * 1024 * 1024 ) break ; if ( xl -> count && td . count != xl -> count ) break ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! headerPut <S2SV_ModEnd> ( h , <S2SV_ModStart> ( h , <S2SV_ModEnd> & td , <S2SV_ModStart> , HEADERPUT_DEFAULT ) ) break ; rpmtdFreeData ( & td ) ; } } rpmtdFreeData ( & td ) ; if ( xl -> stag ) { rasprintf ( msg , \"invalid<S2SV_blank>signature<S2SV_blank>tag<S2SV_blank>%s<S2SV_blank>(%d)\" , rpmTagGetName ( xl -> xtag ) , xl -> xtag ) ; } return xl -> stag <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18248\n\n```\nCWE-20 static cupsd_job_t * add_job ( cupsd_client_t * con , cupsd_printer_t * printer , mime_type_t * filetype ) { http_status_t status ; ipp_attribute_t * attr , * auth_info ; const char * mandatory ; const char * val ; int priority ; cupsd_job_t * job ; char job_uri [ HTTP_MAX_URI ] ; int kbytes ; int i ; int lowerpagerange ; int exact ; ipp_attribute_t * media_col , * media_margin ; ipp_t * unsup_col ; static const char * const readonly [ ] = { \"date-time-at-completed\" , \"date-time-at-creation\" , \"date-time-at-processing\" , \"job-detailed-status-messages\" , \"job-document-access-errors\" , \"job-id\" , \"job-impressions-completed\" , \"job-k-octets-completed\" , \"job-media-sheets-completed\" , \"job-pages-completed\" , \"job-printer-up-time\" , \"job-printer-uri\" , \"job-state\" , \"job-state-message\" , \"job-state-reasons\" , \"job-uri\" , \"number-of-documents\" , \"number-of-intervening-jobs\" , \"output-device-assigned\" , \"time-at-completed\" , \"time-at-creation\" , \"time-at-processing\" } ; cupsdLogMessage ( CUPSD_LOG_DEBUG2 , \"add_job(%p[%d],<S2SV_blank>%p(%s),<S2SV_blank>%p(%s/%s))\" , con , con -> number , printer , printer -> name , filetype , filetype ? filetype -> super : \"none\" , filetype ? filetype -> type : \"none\" ) ; if ( ! printer -> shared && _cups_strcasecmp ( con -> http -> hostname , \"localhost\" ) && _cups_strcasecmp ( con -> http -> hostname , ServerName ) ) { send_ipp_status ( con , IPP_NOT_AUTHORIZED , _ ( \"The<S2SV_blank>printer<S2SV_blank>or<S2SV_blank>class<S2SV_blank>is<S2SV_blank>not<S2SV_blank>shared.\" ) ) ; return ( NULL ) ; } auth_info = ippFindAttribute ( con -> request , \"auth-info\" , IPP_TAG_TEXT ) ; if ( ( status = cupsdCheckPolicy ( printer -> op_policy_ptr , con , NULL ) ) != HTTP_OK ) { send_http_error ( con , status , printer ) ; return ( NULL ) ; } else if ( printer -> num_auth_info_required == 1 && ! strcmp ( printer -> auth_info_required [ 0 ] , \"negotiate\" ) && ! con -> username [ 0 ] ) { send_http_error ( con , HTTP_UNAUTHORIZED , printer ) ; return ( NULL ) ; } # ifdef HAVE_SSL else if ( auth_info && ! con -> http -> tls && ! httpAddrLocalhost ( con -> http -> hostaddr ) ) { send_http_error ( con , HTTP_UPGRADE_REQUIRED , printer ) ; return ( NULL ) ; } # endif if ( ! printer -> accepting ) { send_ipp_status ( con , IPP_NOT_ACCEPTING , _ ( \"Destination<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>is<S2SV_blank>not<S2SV_blank>accepting<S2SV_blank>jobs.\" ) , printer -> name ) ; return ( NULL ) ; } for ( i = 0 ; i < ( int ) ( sizeof ( readonly ) / sizeof ( readonly [ 0 ] ) ) ; i ++ ) { if ( ( attr = ippFindAttribute ( con -> request , readonly [ i ] , IPP_TAG_ZERO ) ) != NULL ) { ippDeleteAttribute ( con -> request , attr ) ; if ( StrictConformance ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"The<S2SV_blank>\\'%s\\'<S2SV_blank>Job<S2SV_blank>Status<S2SV_blank>attribute<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>supplied<S2SV_blank>in<S2SV_blank>a<S2SV_blank>job<S2SV_blank>creation<S2SV_blank>request.\" ) , readonly [ i ] ) ; return ( NULL ) ; } cupsdLogMessage ( CUPSD_LOG_INFO , \"Unexpected<S2SV_blank>\\'%s\\'<S2SV_blank>Job<S2SV_blank>Status<S2SV_blank>attribute<S2SV_blank>in<S2SV_blank>a<S2SV_blank>job<S2SV_blank>creation<S2SV_blank>request.\" , readonly [ i ] ) ; } } if ( printer -> pc ) { for ( mandatory = ( char * ) cupsArrayFirst ( printer -> pc -> mandatory ) ; mandatory ; mandatory = ( char * ) cupsArrayNext ( printer -> pc -> mandatory ) ) { if ( ! ippFindAttribute ( con -> request , mandatory , IPP_TAG_ZERO ) ) { send_ipp_status ( con , IPP_CONFLICT , _ ( \"The<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>attribute<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>print<S2SV_blank>jobs.\" ) , mandatory ) ; return ( NULL ) ; } } } if ( filetype && printer -> filetypes && ! cupsArrayFind ( printer -> filetypes , filetype ) ) { char mimetype [ MIME_MAX_SUPER + MIME_MAX_TYPE + 2 ] ; snprintf ( mimetype , sizeof ( mimetype ) , \"%s/%s\" , filetype -> super , filetype -> type ) ; send_ipp_status ( con , IPP_DOCUMENT_FORMAT , _ ( \"Unsupported<S2SV_blank>format<S2SV_blank>\\\\\"%s\\\\\".\" ) , mimetype ) ; ippAddString ( con -> response , IPP_TAG_UNSUPPORTED_GROUP , IPP_TAG_MIMETYPE , \"document-format\" , NULL , mimetype ) ; return ( NULL ) ; } if ( ( attr = ippFindAttribute ( con -> request , \"copies\" , IPP_TAG_INTEGER ) ) != NULL ) { if ( attr -> values [ 0 ] . integer < 1 || attr -> values [ 0 ] . integer > MaxCopies ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>copies<S2SV_blank>value<S2SV_blank>%d.\" ) , attr -> values [ 0 ] . integer ) ; ippAddInteger ( con -> response , IPP_TAG_UNSUPPORTED_GROUP , IPP_TAG_INTEGER , \"copies\" , attr -> values [ 0 ] . integer ) ; return ( NULL ) ; } } if ( ( attr = ippFindAttribute ( con -> request , \"job-sheets\" , IPP_TAG_ZERO ) ) != NULL ) { if ( attr -> value_tag != IPP_TAG_KEYWORD && attr -> value_tag != IPP_TAG_NAME ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"Bad<S2SV_blank>job-sheets<S2SV_blank>value<S2SV_blank>type.\" ) ) ; return ( NULL ) ; } if ( attr -> num_values > 2 ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"Too<S2SV_blank>many<S2SV_blank>job-sheets<S2SV_blank>values<S2SV_blank>(%d<S2SV_blank>><S2SV_blank>2).\" ) , attr -> num_values ) ; return ( NULL ) ; } for ( i = 0 ; i < attr -> num_values ; i ++ ) if ( strcmp ( attr -> values [ i ] . string . text , \"none\" ) && ! cupsdFindBanner ( attr -> values [ i ] . string . text ) ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"Bad<S2SV_blank>job-sheets<S2SV_blank>value<S2SV_blank>\\\\\"%s\\\\\".\" ) , attr -> values [ i ] . string . text ) ; return ( NULL ) ; } } if ( ( attr = ippFindAttribute ( con -> request , \"number-up\" , IPP_TAG_INTEGER ) ) != NULL ) { if ( attr -> values [ 0 ] . integer != 1 && attr -> values [ 0 ] . integer != 2 && attr -> values [ 0 ] . integer != 4 && attr -> values [ 0 ] . integer != 6 && attr -> values [ 0 ] . integer != 9 && attr -> values [ 0 ] . integer != 16 ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>number-up<S2SV_blank>value<S2SV_blank>%d.\" ) , attr -> values [ 0 ] . integer ) ; ippAddInteger ( con -> response , IPP_TAG_UNSUPPORTED_GROUP , IPP_TAG_INTEGER , \"number-up\" , attr -> values [ 0 ] . integer ) ; return ( NULL ) ; } } if ( ( attr = ippFindAttribute ( con -> request , \"page-ranges\" , IPP_TAG_RANGE ) ) != NULL ) { for ( i = 0 , lowerpagerange = 1 ; i < attr -> num_values ; i ++ ) { if ( attr -> values [ i ] . range . lower < lowerpagerange || attr -> values [ i ] . range . lower > attr -> values [ i ] . range . upper ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"Bad<S2SV_blank>page-ranges<S2SV_blank>values<S2SV_blank>%d-%d.\" ) , attr -> values [ i ] . range . lower , attr -> values [ i ] . range . upper ) ; return ( NULL ) ; } lowerpagerange = attr -> values [ i ] . range . upper + 1 ; } } if ( ! ippFindAttribute ( con -> request , \"PageRegion\" , IPP_TAG_ZERO ) && ! ippFindAttribute ( con -> request , \"PageSize\" , IPP_TAG_ZERO ) && _ppdCacheGetPageSize ( printer -> pc , con -> request , NULL , & exact ) ) { if ( ! exact && ( media_col = ippFindAttribute ( con -> request , \"media-col\" , IPP_TAG_BEGIN_COLLECTION ) ) != NULL ) { send_ipp_status ( con , IPP_OK_SUBST , _ ( \"Unsupported<S2SV_blank>margins.\" ) ) ; unsup_col = ippNew ( ) ; if ( ( media_margin = ippFindAttribute ( media_col -> values [ 0 ] . collection , \"media-bottom-margin\" , IPP_TAG_INTEGER ) ) != NULL ) ippAddInteger ( unsup_col , IPP_TAG_ZERO , IPP_TAG_INTEGER , \"media-bottom-margin\" , media_margin -> values [ 0 ] . integer ) ; if ( ( media_margin = ippFindAttribute ( media_col -> values [ 0 ] . collection , \"media-left-margin\" , IPP_TAG_INTEGER ) ) != NULL ) ippAddInteger ( unsup_col , IPP_TAG_ZERO , IPP_TAG_INTEGER , \"media-left-margin\" , media_margin -> values [ 0 ] . integer ) ; if ( ( media_margin = ippFindAttribute ( media_col -> values [ 0 ] . collection , \"media-right-margin\" , IPP_TAG_INTEGER ) ) != NULL ) ippAddInteger ( unsup_col , IPP_TAG_ZERO , IPP_TAG_INTEGER , \"media-right-margin\" , media_margin -> values [ 0 ] . integer ) ; if ( ( media_margin = ippFindAttribute ( media_col -> values [ 0 ] . collection , \"media-top-margin\" , IPP_TAG_INTEGER ) ) != NULL ) ippAddInteger ( unsup_col , IPP_TAG_ZERO , IPP_TAG_INTEGER , \"media-top-margin\" , media_margin -> values [ 0 ] . integer ) ; ippAddCollection ( con -> response , IPP_TAG_UNSUPPORTED_GROUP , \"media-col\" , unsup_col ) ; ippDelete ( unsup_col ) ; } } if ( MaxJobs && cupsArrayCount ( Jobs ) >= MaxJobs ) cupsdCleanJobs ( ) ; if ( MaxJobs && cupsArrayCount ( Jobs ) >= MaxJobs ) { send_ipp_status ( con , IPP_NOT_POSSIBLE , _ ( \"Too<S2SV_blank>many<S2SV_blank>active<S2SV_blank>jobs.\" ) ) ; return ( NULL ) ; } if ( ( i = check_quotas ( con , printer ) ) < 0 ) { send_ipp_status ( con , IPP_NOT_POSSIBLE , _ ( \"Quota<S2SV_blank>limit<S2SV_blank>reached.\" ) ) ; return ( NULL ) ; } else if ( i == 0 ) { send_ipp_status ( con , IPP_NOT_AUTHORIZED , _ ( \"Not<S2SV_blank>allowed<S2SV_blank>to<S2SV_blank>print.\" ) ) ; return ( NULL ) ; } if ( ( attr = ippFindAttribute ( con -> request , \"job-priority\" , IPP_TAG_INTEGER ) ) != NULL ) priority = attr -> values [ 0 ] . integer ; else { if ( ( val = cupsGetOption ( \"job-priority\" , printer -> num_options , printer -> options ) ) != NULL ) priority = atoi ( val ) ; else priority = 50 ; ippAddInteger ( con -> request , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-priority\" , priority ) ; } if ( ( attr = ippFindAttribute ( con -> request , \"job-name\" , IPP_TAG_ZERO ) ) == NULL ) ippAddString ( con -> request , IPP_TAG_JOB , IPP_TAG_NAME , \"job-name\" , NULL , \"Untitled\" ) ; else if ( ( attr -> value_tag != IPP_TAG_NAME && attr -> value_tag != IPP_TAG_NAMELANG ) || attr -> num_values != 1 ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>job-name<S2SV_blank>value:<S2SV_blank>Wrong<S2SV_blank>type<S2SV_blank>or<S2SV_blank>count.\" ) ) ; if ( ( attr = ippCopyAttribute ( con -> response , attr , 0 ) ) != NULL ) attr -> group_tag = IPP_TAG_UNSUPPORTED_GROUP ; return ( NULL ) ; } else if ( ! ippValidateAttribute ( attr ) ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>job-name<S2SV_blank>value:<S2SV_blank>%s\" ) , cupsLastErrorString ( ) ) ; if ( ( attr = ippCopyAttribute ( con -> response , attr , 0 ) ) != NULL ) attr -> group_tag = IPP_TAG_UNSUPPORTED_GROUP ; return ( NULL ) ; } <S2SV_StartBug> if ( ( job = cupsdAddJob ( priority , printer -> name ) ) == NULL ) <S2SV_EndBug> { send_ipp_status ( con , IPP_INTERNAL_ERROR , _ ( \"Unable<S2SV_blank>to<S2SV_blank>add<S2SV_blank>job<S2SV_blank>for<S2SV_blank>destination<S2SV_blank>\\\\\"%s\\\\\".\" ) , printer -> name ) ; return ( NULL ) ; } job -> dtype = printer -> type & ( CUPS_PRINTER_CLASS | CUPS_PRINTER_REMOTE ) ; job -> attrs = con -> request ; job -> dirty = 1 ; con -> request = ippNewRequest ( job -> attrs -> request . op . operation_id ) ; cupsdMarkDirty ( CUPSD_DIRTY_JOBS ) ; add_job_uuid ( job ) ; <S2SV_StartBug> apply_printer_defaults ( printer , job ) ; <S2SV_EndBug> attr = ippFindAttribute ( job -> attrs , \"requesting-user-name\" , IPP_TAG_NAME ) ; if ( con -> username [ 0 ] ) { cupsdSetString ( & job -> username , con -> username ) ; if ( attr ) ippSetString ( job -> attrs , & attr , 0 , con -> username ) ; } else if ( attr ) { cupsdLogMessage ( CUPSD_LOG_DEBUG , \"add_job:<S2SV_blank>requesting-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text ) ; cupsdSetString ( & job -> username , attr -> values [ 0 ] . string . text ) ; } else cupsdSetString ( & job -> username , \"anonymous\" ) ; if ( ! attr ) ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NAME , \"job-originating-user-name\" , NULL , job -> username ) ; else { ippSetGroupTag ( job -> attrs , & attr , IPP_TAG_JOB ) ; ippSetName ( job -> attrs , & attr , \"job-originating-user-name\" ) ; } if ( con -> username [ 0 ] || auth_info ) { save_auth_info ( con , job , auth_info ) ; if ( auth_info ) ippDeleteAttribute ( job -> attrs , auth_info ) ; } if ( ( attr = ippFindAttribute ( con -> request , \"job-name\" , IPP_TAG_NAME ) ) != NULL ) cupsdSetString ( & ( job -> name ) , attr -> values [ 0 ] . string . text ) ; if ( ( attr = ippFindAttribute ( job -> attrs , \"job-originating-host-name\" , IPP_TAG_ZERO ) ) != NULL ) { if ( attr -> value_tag != IPP_TAG_NAME || attr -> num_values != 1 || strcmp ( con -> http -> hostname , \"localhost\" ) ) { ippDeleteAttribute ( job -> attrs , attr ) ; ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NAME , \"job-originating-host-name\" , NULL , con -> http -> hostname ) ; } else ippSetGroupTag ( job -> attrs , & attr , IPP_TAG_JOB ) ; } else { ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NAME , \"job-originating-host-name\" , NULL , con -> http -> hostname ) ; } ippAddOutOfBand ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NOVALUE , \"date-time-at-completed\" ) ; ippAddDate ( job -> attrs , IPP_TAG_JOB , \"date-time-at-creation\" , ippTimeToDate ( time ( NULL ) ) ) ; ippAddOutOfBand ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NOVALUE , \"date-time-at-processing\" ) ; ippAddOutOfBand ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NOVALUE , \"time-at-completed\" ) ; ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"time-at-creation\" , time ( NULL ) ) ; ippAddOutOfBand ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NOVALUE , \"time-at-processing\" ) ; ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-id\" , job -> id ) ; job -> state = ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_ENUM , \"job-state\" , IPP_JOB_STOPPED ) ; job -> state_value = ( ipp_jstate_t ) job -> state -> values [ 0 ] . integer ; job -> reasons = ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_KEYWORD , \"job-state-reasons\" , NULL , \"job-incoming\" ) ; job -> impressions = ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-impressions-completed\" , 0 ) ; job -> sheets = ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-media-sheets-completed\" , 0 ) ; ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_URI , \"job-printer-uri\" , NULL , printer -> uri ) ; if ( ( attr = ippFindAttribute ( job -> attrs , \"job-k-octets\" , IPP_TAG_INTEGER ) ) != NULL ) attr -> values [ 0 ] . integer = 0 ; else ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-k-octets\" , 0 ) ; if ( ( attr = ippFindAttribute ( job -> attrs , \"job-hold-until\" , IPP_TAG_KEYWORD ) ) == NULL ) attr = ippFindAttribute ( job -> attrs , \"job-hold-until\" , IPP_TAG_NAME ) ; if ( ! attr ) { if ( ( val = cupsGetOption ( \"job-hold-until\" , printer -> num_options , printer -> options ) ) == NULL ) val = \"no-hold\" ; attr = ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_KEYWORD , \"job-hold-until\" , NULL , val ) ; } if ( printer -> holding_new_jobs ) { if ( attr && strcmp ( attr -> values [ 0 ] . string . text , \"no-hold\" ) ) cupsdSetJobHoldUntil ( job , ippGetString ( attr , 0 , NULL ) , 0 ) ; else cupsdSetJobHoldUntil ( job , \"indefinite\" , 0 ) ; job -> state -> values [ 0 ] . integer = IPP_JOB_HELD ; job -> state_value = IPP_JOB_HELD ; ippSetString ( job -> attrs , & job -> reasons , 0 , \"job-held-on-create\" ) ; } else if ( attr && strcmp ( attr -> values [ 0 ] . string . text , \"no-hold\" ) ) { cupsdSetJobHoldUntil ( job , attr -> values [ 0 ] . string . text , 0 ) ; job -> state -> values [ 0 ] . integer = IPP_JOB_HELD ; job -> state_value = IPP_JOB_HELD ; ippSetString ( job -> attrs , & job -> reasons , 0 , \"job-hold-until-specified\" ) ; } else if ( job -> attrs -> request . op . operation_id == IPP_CREATE_JOB ) { job -> hold_until = time ( NULL ) + MultipleOperationTimeout ; job -> state -> values [ 0 ] . integer = IPP_JOB_HELD ; job -> state_value = IPP_JOB_HELD ; } else { job -> state -> values [ 0 ] . integer = IPP_JOB_PENDING ; job -> state_value = IPP_JOB_PENDING ; ippSetString ( job -> attrs , & job -> reasons , 0 , \"none\" ) ; } if ( ! ( printer -> type & CUPS_PRINTER_REMOTE ) || Classification ) { if ( ( attr = ippFindAttribute ( job -> attrs , \"job-sheets\" , IPP_TAG_ZERO ) ) == NULL ) { cupsdLogMessage ( CUPSD_LOG_DEBUG , \"Adding<S2SV_blank>default<S2SV_blank>job-sheets<S2SV_blank>values<S2SV_blank>\\\\\"%s,%s\\\\\"...\" , printer -> job_sheets [ 0 ] , printer -> job_sheets [ 1 ] ) ; attr = ippAddStrings ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NAME , \"job-sheets\" , 2 , NULL , NULL ) ; ippSetString ( job -> attrs , & attr , 0 , printer -> job_sheets [ 0 ] ) ; ippSetString ( job -> attrs , & attr , 1 , printer -> job_sheets [ 1 ] ) ; } job -> job_sheets = attr ; if ( Classification ) { cupsdLogMessage ( CUPSD_LOG_INFO , \"Classification=\\\\\"%s\\\\\",<S2SV_blank>ClassifyOverride=%d\" , Classification ? Classification : \"(null)\" , ClassifyOverride ) ; if ( ClassifyOverride ) { if ( ! strcmp ( attr -> values [ 0 ] . string . text , \"none\" ) && ( attr -> num_values == 1 || ! strcmp ( attr -> values [ 1 ] . string . text , \"none\" ) ) ) { ippSetString ( job -> attrs , & attr , 0 , Classification ) ; cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>FORCED<S2SV_blank>\" \"job-sheets=\\\\\"%s,none\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , Classification , job -> username ) ; } else if ( attr -> num_values == 2 && strcmp ( attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text ) && strcmp ( attr -> values [ 0 ] . string . text , \"none\" ) && strcmp ( attr -> values [ 1 ] . string . text , \"none\" ) ) { ippSetString ( job -> attrs , & attr , 1 , attr -> values [ 0 ] . string . text ) ; cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>FORCED<S2SV_blank>\" \"job-sheets=\\\\\"%s,%s\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text , job -> username ) ; } else if ( strcmp ( attr -> values [ 0 ] . string . text , Classification ) && strcmp ( attr -> values [ 0 ] . string . text , \"none\" ) && ( attr -> num_values == 1 || ( strcmp ( attr -> values [ 1 ] . string . text , Classification ) && strcmp ( attr -> values [ 1 ] . string . text , \"none\" ) ) ) ) { if ( attr -> num_values == 1 ) cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>OVERRIDDEN<S2SV_blank>\" \"job-sheets=\\\\\"%s\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text , job -> username ) ; else cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>OVERRIDDEN<S2SV_blank>\" \"job-sheets=\\\\\"%s,%s\\\\\",fffff<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text , job -> username ) ; } } else if ( strcmp ( attr -> values [ 0 ] . string . text , Classification ) && ( attr -> num_values == 1 || strcmp ( attr -> values [ 1 ] . string . text , Classification ) ) ) { if ( attr -> num_values > 1 && ! strcmp ( attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text ) ) { ippSetString ( job -> attrs , & attr , 0 , Classification ) ; ippSetString ( job -> attrs , & attr , 1 , Classification ) ; } else { if ( attr -> num_values == 1 || strcmp ( attr -> values [ 0 ] . string . text , \"none\" ) ) ippSetString ( job -> attrs , & attr , 0 , Classification ) ; if ( attr -> num_values > 1 && strcmp ( attr -> values [ 1 ] . string . text , \"none\" ) ) ippSetString ( job -> attrs , & attr , 1 , Classification ) ; } if ( attr -> num_values > 1 ) cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>FORCED<S2SV_blank>\" \"job-sheets=\\\\\"%s,%s\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text , job -> username ) ; else cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>FORCED<S2SV_blank>\" \"job-sheets=\\\\\"%s\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , Classification , job -> username ) ; } } if ( ! ( printer -> type & CUPS_PRINTER_REMOTE ) ) { cupsdLogJob ( job , CUPSD_LOG_INFO , \"Adding<S2SV_blank>start<S2SV_blank>banner<S2SV_blank>page<S2SV_blank>\\\\\"%s\\\\\".\" , attr -> values [ 0 ] . string . text ) ; if ( ( kbytes = copy_banner ( con , job , attr -> values [ 0 ] . string . text ) ) < 0 ) { cupsdSetJobState ( job , IPP_JOB_ABORTED , CUPSD_JOB_PURGE , \"Aborting<S2SV_blank>job<S2SV_blank>because<S2SV_blank>the<S2SV_blank>start<S2SV_blank>banner<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>\" \"copied.\" ) ; return ( NULL ) ; } cupsdUpdateQuota ( printer , job -> username , 0 , kbytes ) ; } } else if ( ( attr = ippFindAttribute ( job -> attrs , \"job-sheets\" , IPP_TAG_ZERO ) ) != NULL ) job -> job_sheets = attr ; httpAssembleURIf ( HTTP_URI_CODING_ALL , job_uri , sizeof ( job_uri ) , \"ipp\" , NULL , con -> clientname , con -> clientport , \"/jobs/%d\" , job -> id ) ; ippAddString ( con -> response , IPP_TAG_JOB , IPP_TAG_URI , \"job-uri\" , NULL , job_uri ) ; ippAddInteger ( con -> response , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-id\" , job -> id ) ; ippAddInteger ( con -> response , IPP_TAG_JOB , IPP_TAG_ENUM , \"job-state\" , job -> state_value ) ; ippAddString ( con -> response , IPP_TAG_JOB , IPP_TAG_TEXT , \"job-state-message\" , NULL , \"\" ) ; ippAddString ( con -> response , IPP_TAG_JOB , IPP_TAG_KEYWORD , \"job-state-reasons\" , NULL , job -> reasons -> values [ 0 ] . string . text ) ; con -> response -> request . status . status_code = IPP_OK ; add_job_subscriptions ( con , job ) ; for ( attr = job -> attrs -> attrs -> next -> next ; attr ; attr = attr -> next ) attr -> group_tag = IPP_TAG_JOB ; cupsdAddEvent ( CUPSD_EVENT_JOB_CREATED , printer , job , \"Job<S2SV_blank>created.\" ) ; return ( job ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } attr = ippFindAttribute ( con -> request , \"requesting-user-name\" , IPP_TAG_NAME ) ; if ( attr && ! ippValidateAttribute ( attr ) ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>requesting-user-name<S2SV_blank>value:<S2SV_blank>%s\" ) , cupsLastErrorString ( ) ) ; if ( ( attr = ippCopyAttribute ( con -> response , attr , 0 ) ) != NULL ) attr -> group_tag = IPP_TAG_UNSUPPORTED_GROUP ; return ( NULL ) ; } <S2SV_ModStart> printer , job <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16932\n\n```\nCWE-835 int xmlPushInput ( xmlParserCtxtPtr ctxt , xmlParserInputPtr input ) { int ret ; if ( input == NULL ) return ( - 1 ) ; if ( xmlParserDebugEntities ) { if ( ( ctxt -> input != NULL ) && ( ctxt -> input -> filename ) ) xmlGenericError ( xmlGenericErrorContext , \"%s(%d):<S2SV_blank>\" , ctxt -> input -> filename , ctxt -> input -> line ) ; xmlGenericError ( xmlGenericErrorContext , <S2SV_StartBug> \"Pushing<S2SV_blank>input<S2SV_blank>%d<S2SV_blank>:<S2SV_blank>%.30s\\\\n\" , ctxt -> inputNr + 1 , input -> cur ) ; <S2SV_EndBug> } ret = inputPush ( ctxt , input ) ; if ( ctxt -> instate == XML_PARSER_EOF ) return ( - 1 ) ; GROW ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> input -> cur ) ; } if ( ( ( ctxt -> inputNr > 40 ) && ( ( ctxt -> options & XML_PARSE_HUGE ) == 0 ) ) || ( ctxt -> inputNr > 1024 ) ) { xmlFatalErr ( ctxt , XML_ERR_ENTITY_LOOP , NULL ) ; while ( ctxt -> inputNr > 1 ) xmlFreeInputStream ( inputPop ( ctxt ) ) ; return ( - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20748\n\n```\nCWE-787 rfbBool InitialiseRFBConnection ( rfbClient * client ) { rfbProtocolVersionMsg pv ; int major , minor ; uint32_t authScheme ; uint32_t subAuthScheme ; rfbClientInitMsg ci ; if ( client -> listenSpecified ) errorMessageOnReadFailure = FALSE ; if ( ! ReadFromRFBServer ( client , pv , sz_rfbProtocolVersionMsg ) ) return FALSE ; pv [ sz_rfbProtocolVersionMsg ] = 0 ; errorMessageOnReadFailure = TRUE ; pv [ sz_rfbProtocolVersionMsg ] = 0 ; if ( sscanf ( pv , rfbProtocolVersionFormat , & major , & minor ) != 2 ) { rfbClientLog ( \"Not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>VNC<S2SV_blank>server<S2SV_blank>(%s)\\\\n\" , pv ) ; return FALSE ; } DefaultSupportedMessages ( client ) ; client -> major = major ; client -> minor = minor ; if ( ( major == rfbProtocolMajorVersion ) && ( minor > rfbProtocolMinorVersion ) ) client -> minor = rfbProtocolMinorVersion ; if ( major == 3 && ( minor == 4 || minor == 6 ) ) { rfbClientLog ( \"UltraVNC<S2SV_blank>server<S2SV_blank>detected,<S2SV_blank>enabling<S2SV_blank>UltraVNC<S2SV_blank>specific<S2SV_blank>messages\\\\n\" , pv ) ; DefaultSupportedMessagesUltraVNC ( client ) ; } if ( major == 3 && ( minor == 14 || minor == 16 ) ) { minor = minor - 10 ; client -> minor = minor ; rfbClientLog ( \"UltraVNC<S2SV_blank>Single<S2SV_blank>Click<S2SV_blank>server<S2SV_blank>detected,<S2SV_blank>enabling<S2SV_blank>UltraVNC<S2SV_blank>specific<S2SV_blank>messages\\\\n\" , pv ) ; DefaultSupportedMessagesUltraVNC ( client ) ; } if ( major == 3 && minor == 5 ) { rfbClientLog ( \"TightVNC<S2SV_blank>server<S2SV_blank>detected,<S2SV_blank>enabling<S2SV_blank>TightVNC<S2SV_blank>specific<S2SV_blank>messages\\\\n\" , pv ) ; DefaultSupportedMessagesTightVNC ( client ) ; } if ( ( major == 3 && minor > 8 ) || major > 3 ) { client -> major = 3 ; client -> minor = 8 ; } rfbClientLog ( \"VNC<S2SV_blank>server<S2SV_blank>supports<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>%d.%d<S2SV_blank>(viewer<S2SV_blank>%d.%d)\\\\n\" , major , minor , rfbProtocolMajorVersion , rfbProtocolMinorVersion ) ; sprintf ( pv , rfbProtocolVersionFormat , client -> major , client -> minor ) ; if ( ! WriteToRFBServer ( client , pv , sz_rfbProtocolVersionMsg ) ) return FALSE ; if ( client -> major == 3 && client -> minor > 6 ) { if ( ! ReadSupportedSecurityType ( client , & authScheme , FALSE ) ) return FALSE ; } else { if ( ! ReadFromRFBServer ( client , ( char * ) & authScheme , 4 ) ) return FALSE ; authScheme = rfbClientSwap32IfLE ( authScheme ) ; } rfbClientLog ( \"Selected<S2SV_blank>Security<S2SV_blank>Scheme<S2SV_blank>%d\\\\n\" , authScheme ) ; client -> authScheme = authScheme ; switch ( authScheme ) { case rfbConnFailed : ReadReason ( client ) ; return FALSE ; case rfbNoAuth : rfbClientLog ( \"No<S2SV_blank>authentication<S2SV_blank>needed\\\\n\" ) ; if ( ( client -> major == 3 && client -> minor > 7 ) || client -> major > 3 ) if ( ! rfbHandleAuthResult ( client ) ) return FALSE ; break ; case rfbVncAuth : if ( ! HandleVncAuth ( client ) ) return FALSE ; break ; # ifdef LIBVNCSERVER_HAVE_SASL case rfbSASL : if ( ! HandleSASLAuth ( client ) ) return FALSE ; break ; # endif case rfbMSLogon : if ( ! HandleMSLogonAuth ( client ) ) return FALSE ; break ; case rfbARD : # ifndef LIBVNCSERVER_WITH_CLIENT_GCRYPT rfbClientLog ( \"GCrypt<S2SV_blank>support<S2SV_blank>was<S2SV_blank>not<S2SV_blank>compiled<S2SV_blank>in\\\\n\" ) ; return FALSE ; # else if ( ! HandleARDAuth ( client ) ) return FALSE ; # endif break ; case rfbTLS : if ( ! HandleAnonTLSAuth ( client ) ) return FALSE ; if ( ! ReadSupportedSecurityType ( client , & subAuthScheme , TRUE ) ) return FALSE ; client -> subAuthScheme = subAuthScheme ; switch ( subAuthScheme ) { case rfbConnFailed : ReadReason ( client ) ; return FALSE ; case rfbNoAuth : rfbClientLog ( \"No<S2SV_blank>sub<S2SV_blank>authentication<S2SV_blank>needed\\\\n\" ) ; if ( ( client -> major == 3 && client -> minor > 7 ) || client -> major > 3 ) if ( ! rfbHandleAuthResult ( client ) ) return FALSE ; break ; case rfbVncAuth : if ( ! HandleVncAuth ( client ) ) return FALSE ; break ; # ifdef LIBVNCSERVER_HAVE_SASL case rfbSASL : if ( ! HandleSASLAuth ( client ) ) return FALSE ; break ; # endif default : rfbClientLog ( \"Unknown<S2SV_blank>sub<S2SV_blank>authentication<S2SV_blank>scheme<S2SV_blank>from<S2SV_blank>VNC<S2SV_blank>server:<S2SV_blank>%d\\\\n\" , ( int ) subAuthScheme ) ; return FALSE ; } break ; case rfbVeNCrypt : if ( ! HandleVeNCryptAuth ( client ) ) return FALSE ; switch ( client -> subAuthScheme ) { case rfbVeNCryptTLSNone : case rfbVeNCryptX509None : rfbClientLog ( \"No<S2SV_blank>sub<S2SV_blank>authentication<S2SV_blank>needed\\\\n\" ) ; if ( ! rfbHandleAuthResult ( client ) ) return FALSE ; break ; case rfbVeNCryptTLSVNC : case rfbVeNCryptX509VNC : if ( ! HandleVncAuth ( client ) ) return FALSE ; break ; case rfbVeNCryptTLSPlain : case rfbVeNCryptX509Plain : if ( ! HandlePlainAuth ( client ) ) return FALSE ; break ; # ifdef LIBVNCSERVER_HAVE_SASL case rfbVeNCryptX509SASL : case rfbVeNCryptTLSSASL : if ( ! HandleSASLAuth ( client ) ) return FALSE ; break ; # endif default : rfbClientLog ( \"Unknown<S2SV_blank>sub<S2SV_blank>authentication<S2SV_blank>scheme<S2SV_blank>from<S2SV_blank>VNC<S2SV_blank>server:<S2SV_blank>%d\\\\n\" , client -> subAuthScheme ) ; return FALSE ; } break ; default : { rfbBool authHandled = FALSE ; rfbClientProtocolExtension * e ; for ( e = rfbClientExtensions ; e ; e = e -> next ) { uint32_t const * secType ; if ( ! e -> handleAuthentication ) continue ; for ( secType = e -> securityTypes ; secType && * secType ; secType ++ ) { if ( authScheme == * secType ) { if ( ! e -> handleAuthentication ( client , authScheme ) ) return FALSE ; if ( ! rfbHandleAuthResult ( client ) ) return FALSE ; authHandled = TRUE ; } } } if ( authHandled ) break ; } rfbClientLog ( \"Unknown<S2SV_blank>authentication<S2SV_blank>scheme<S2SV_blank>from<S2SV_blank>VNC<S2SV_blank>server:<S2SV_blank>%d\\\\n\" , ( int ) authScheme ) ; return FALSE ; } ci . shared = ( client -> appData . shareDesktop ? 1 : 0 ) ; if ( ! WriteToRFBServer ( client , ( char * ) & ci , sz_rfbClientInitMsg ) ) return FALSE ; if ( ! ReadFromRFBServer ( client , ( char * ) & client -> si , sz_rfbServerInitMsg ) ) return FALSE ; client -> si . framebufferWidth = rfbClientSwap16IfLE ( client -> si . framebufferWidth ) ; client -> si . framebufferHeight = rfbClientSwap16IfLE ( client -> si . framebufferHeight ) ; client -> si . format . redMax = rfbClientSwap16IfLE ( client -> si . format . redMax ) ; client -> si . format . greenMax = rfbClientSwap16IfLE ( client -> si . format . greenMax ) ; client -> si . format . blueMax = rfbClientSwap16IfLE ( client -> si . format . blueMax ) ; client -> si . nameLength = rfbClientSwap32IfLE ( client -> si . nameLength ) ; <S2SV_StartBug> client -> desktopName = malloc ( ( uint64_t ) client -> si . nameLength + 1 ) ; <S2SV_EndBug> if ( ! client -> desktopName ) { rfbClientLog ( \"Error<S2SV_blank>allocating<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>desktop<S2SV_blank>name,<S2SV_blank>%lu<S2SV_blank>bytes\\\\n\" , ( unsigned long ) client -> si . nameLength ) ; return FALSE ; } if ( ! ReadFromRFBServer ( client , client -> desktopName , client -> si . nameLength ) ) return FALSE ; client -> desktopName [ client -> si . nameLength ] = 0 ; rfbClientLog ( \"Desktop<S2SV_blank>name<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , client -> desktopName ) ; rfbClientLog ( \"Connected<S2SV_blank>to<S2SV_blank>VNC<S2SV_blank>server,<S2SV_blank>using<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>%d.%d\\\\n\" , client -> major , client -> minor ) ; rfbClientLog ( \"VNC<S2SV_blank>server<S2SV_blank>default<S2SV_blank>format:\\\\n\" ) ; PrintPixelFormat ( & client -> si . format ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nameLength ) ; if ( client -> si . nameLength > 1 << 20 ) { rfbClientErr ( \"Too<S2SV_blank>big<S2SV_blank>desktop<S2SV_blank>name<S2SV_blank>length<S2SV_blank>sent<S2SV_blank>by<S2SV_blank>server:<S2SV_blank>%u<S2SV_blank>B<S2SV_blank>><S2SV_blank>1<S2SV_blank>MB\\\\n\" , ( unsigned int ) client -> si . nameLength ) ; return FALSE ; } <S2SV_ModStart> = malloc ( <S2SV_ModEnd> client -> si\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline signed int ReadPropertyMSBLong ( const unsigned char * * p , size_t * length ) { union { unsigned int unsigned_value ; signed int signed_value ; } quantum ; int c ; register ssize_t i ; unsigned char buffer [ 4 ] ; <S2SV_StartBug> size_t <S2SV_EndBug> value ; if ( * length < 4 ) return ( - 1 ) ; for ( i = 0 ; i < 4 ; i ++ ) { c = ( int ) ( * ( * p ) ++ ) ; ( * length ) -- ; buffer [ i ] = ( unsigned char ) c ; } <S2SV_StartBug> value = ( size_t ) ( buffer [ 0 ] << 24 ) ; <S2SV_EndBug> <S2SV_StartBug> value |= buffer [ 1 ] << 16 ; <S2SV_EndBug> <S2SV_StartBug> value |= buffer [ 2 ] << 8 ; <S2SV_EndBug> <S2SV_StartBug> value |= buffer [ 3 ] ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffffffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 4 ] ; unsigned int <S2SV_ModEnd> value ; if <S2SV_ModStart> value = ( unsigned int ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> ] << 24 <S2SV_ModEnd> ; value |= <S2SV_ModStart> ; value |= ( unsigned int ) <S2SV_ModStart> ; value |= ( unsigned int ) <S2SV_ModStart> ; value |= ( unsigned int ) <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffffffff <S2SV_ModStart> value & 0xffffffff <S2SV_ModEnd> ; return (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13023\n\n```\nCWE-125 static int mobility_opt_print ( netdissect_options * ndo , const u_char * bp , const unsigned len ) { unsigned i , optlen ; for ( i = 0 ; i < len ; i += optlen ) { ND_TCHECK ( bp [ i ] ) ; if ( bp [ i ] == IP6MOPT_PAD1 ) optlen = 1 ; else { if ( i + 1 < len ) { ND_TCHECK ( bp [ i + 1 ] ) ; optlen = bp [ i + 1 ] + 2 ; } else goto trunc ; } if ( i + optlen > len ) goto trunc ; ND_TCHECK ( bp [ i + optlen ] ) ; switch ( bp [ i ] ) { case IP6MOPT_PAD1 : ND_PRINT ( ( ndo , \"(pad1)\" ) ) ; break ; case IP6MOPT_PADN : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(padn:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(padn)\" ) ) ; break ; case IP6MOPT_REFRESH : if ( len - i < IP6MOPT_REFRESH_MINLEN ) { ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"(refresh:<S2SV_blank>%u)\" , <S2SV_EndBug> EXTRACT_16BITS ( & bp [ i + 2 ] ) << 2 ) ) ; break ; case IP6MOPT_ALTCOA : if ( len - i < IP6MOPT_ALTCOA_MINLEN ) { ND_PRINT ( ( ndo , \"(altcoa:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(alt-CoA:<S2SV_blank>%s)\" , ip6addr_string ( ndo , & bp [ i + 2 ] ) ) ) ; break ; case IP6MOPT_NONCEID : if ( len - i < IP6MOPT_NONCEID_MINLEN ) { ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(ni:<S2SV_blank>ho=0x%04x<S2SV_blank>co=0x%04x)\" , EXTRACT_16BITS ( & bp [ i + 2 ] ) , EXTRACT_16BITS ( & bp [ i + 4 ] ) ) ) ; break ; case IP6MOPT_AUTH : if ( len - i < IP6MOPT_AUTH_MINLEN ) { ND_PRINT ( ( ndo , \"(auth:<S2SV_blank>trunc)\" ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(auth)\" ) ) ; break ; default : if ( len - i < IP6MOPT_MINLEN ) { ND_PRINT ( ( ndo , \"(sopt_type<S2SV_blank>%u:<S2SV_blank>trunc)\" , bp [ i ] ) ) ; goto trunc ; } ND_PRINT ( ( ndo , \"(type-0x%02x:<S2SV_blank>len=%u)\" , bp [ i ] , bp [ i + 1 ] ) ) ; break ; } } return 0 ; trunc : return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> trunc ; } ND_TCHECK_16BITS ( & bp [ i + 2 ] ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7509\n\n```\nCWE-20 int ext4_orphan_add ( handle_t * handle , struct inode * inode ) { struct super_block * sb = inode -> i_sb ; struct ext4_iloc iloc ; int err = 0 , rc ; <S2SV_StartBug> if ( ! ext4_handle_valid ( handle ) ) <S2SV_EndBug> return 0 ; mutex_lock ( & EXT4_SB ( sb ) -> s_orphan_lock ) ; if ( ! list_empty ( & EXT4_I ( inode ) -> i_orphan ) ) goto out_unlock ; J_ASSERT ( ( S_ISREG ( inode -> i_mode ) || S_ISDIR ( inode -> i_mode ) || S_ISLNK ( inode -> i_mode ) ) || inode -> i_nlink == 0 ) ; BUFFER_TRACE ( EXT4_SB ( sb ) -> s_sbh , \"get_write_access\" ) ; err = ext4_journal_get_write_access ( handle , EXT4_SB ( sb ) -> s_sbh ) ; if ( err ) goto out_unlock ; err = ext4_reserve_inode_write ( handle , inode , & iloc ) ; if ( err ) goto out_unlock ; if ( NEXT_ORPHAN ( inode ) && NEXT_ORPHAN ( inode ) <= ( le32_to_cpu ( EXT4_SB ( sb ) -> s_es -> s_inodes_count ) ) ) goto mem_insert ; NEXT_ORPHAN ( inode ) = le32_to_cpu ( EXT4_SB ( sb ) -> s_es -> s_last_orphan ) ; EXT4_SB ( sb ) -> s_es -> s_last_orphan = cpu_to_le32 ( inode -> i_ino ) ; err = ext4_handle_dirty_super ( handle , sb ) ; rc = ext4_mark_iloc_dirty ( handle , inode , & iloc ) ; if ( ! err ) err = rc ; mem_insert : if ( ! err ) list_add ( & EXT4_I ( inode ) -> i_orphan , & EXT4_SB ( sb ) -> s_orphan ) ; jbd_debug ( 4 , \"superblock<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%lu\\\\n\" , inode -> i_ino ) ; jbd_debug ( 4 , \"orphan<S2SV_blank>inode<S2SV_blank>%lu<S2SV_blank>will<S2SV_blank>point<S2SV_blank>to<S2SV_blank>%d\\\\n\" , inode -> i_ino , NEXT_ORPHAN ( inode ) ) ; out_unlock : mutex_unlock ( & EXT4_SB ( sb ) -> s_orphan_lock ) ; ext4_std_error ( inode -> i_sb , err ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! EXT4_SB ( sb ) -> s_journal <S2SV_ModEnd> ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-3817\n\n```\nCWE-416 void comps_mrtree_unite ( COMPS_MRTree * rt1 , COMPS_MRTree * rt2 ) { COMPS_HSList * tmplist , * tmp_subnodes ; COMPS_HSListItem * it , * it2 ; struct Pair { COMPS_HSList * subnodes ; char * key ; <S2SV_StartBug> char added ; <S2SV_EndBug> } * pair , * parent_pair ; pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = rt2 -> subnodes ; pair -> key = NULL ; tmplist = comps_hslist_create ( ) ; comps_hslist_init ( tmplist , NULL , NULL , & free ) ; comps_hslist_append ( tmplist , pair , 0 ) ; while ( tmplist -> first != NULL ) { it = tmplist -> first ; comps_hslist_remove ( tmplist , tmplist -> first ) ; tmp_subnodes = ( ( struct Pair * ) it -> data ) -> subnodes ; parent_pair = ( struct Pair * ) it -> data ; free ( it ) ; <S2SV_StartBug> pair -> added = 0 ; <S2SV_EndBug> for ( it = tmp_subnodes -> first ; it != NULL ; it = it -> next ) { pair = malloc ( sizeof ( struct Pair ) ) ; pair -> subnodes = ( ( COMPS_MRTreeData * ) it -> data ) -> subnodes ; if ( parent_pair -> key != NULL ) { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_MRTreeData * ) it -> data ) -> key ) + strlen ( parent_pair -> key ) + 1 ) ) ; memcpy ( pair -> key , parent_pair -> key , sizeof ( char ) * strlen ( parent_pair -> key ) ) ; memcpy ( pair -> key + strlen ( parent_pair -> key ) , ( ( COMPS_MRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_MRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } else { pair -> key = malloc ( sizeof ( char ) * ( strlen ( ( ( COMPS_MRTreeData * ) it -> data ) -> key ) + 1 ) ) ; memcpy ( pair -> key , ( ( COMPS_MRTreeData * ) it -> data ) -> key , sizeof ( char ) * ( strlen ( ( ( COMPS_MRTreeData * ) it -> data ) -> key ) + 1 ) ) ; } if ( ( ( COMPS_MRTreeData * ) it -> data ) -> data -> first != NULL ) { for ( it2 = ( ( COMPS_MRTreeData * ) it -> data ) -> data -> first ; it2 != NULL ; it2 = it2 -> next ) { comps_mrtree_set ( rt1 , pair -> key , it2 -> data ) ; } if ( ( ( COMPS_MRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } else { if ( ( ( COMPS_MRTreeData * ) it -> data ) -> subnodes -> first ) { comps_hslist_append ( tmplist , pair , 0 ) ; } else { free ( pair -> key ) ; free ( pair ) ; } } } free ( parent_pair -> key ) ; free ( parent_pair ) ; } comps_hslist_destroy ( & tmplist ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * key ; <S2SV_ModEnd> } * pair <S2SV_ModStart> it ) ; <S2SV_ModEnd> for ( it\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8785\n\n```\nCWE-399 static ssize_t fuse_fill_write_pages ( struct fuse_req * req , struct address_space * mapping , struct iov_iter * ii , loff_t pos ) { struct fuse_conn * fc = get_fuse_conn ( mapping -> host ) ; unsigned offset = pos & ( PAGE_CACHE_SIZE - 1 ) ; size_t count = 0 ; int err ; req -> in . argpages = 1 ; req -> page_descs [ 0 ] . offset = offset ; do { size_t tmp ; struct page * page ; pgoff_t index = pos >> PAGE_CACHE_SHIFT ; size_t bytes = min_t ( size_t , PAGE_CACHE_SIZE - offset , iov_iter_count ( ii ) ) ; bytes = min_t ( size_t , bytes , fc -> max_write - count ) ; again : err = - EFAULT ; if ( iov_iter_fault_in_readable ( ii , bytes ) ) break ; err = - ENOMEM ; page = grab_cache_page_write_begin ( mapping , index , 0 ) ; if ( ! page ) break ; if ( mapping_writably_mapped ( mapping ) ) flush_dcache_page ( page ) ; tmp = iov_iter_copy_from_user_atomic ( page , ii , offset , bytes ) ; <S2SV_StartBug> flush_dcache_page ( page ) ; <S2SV_EndBug> if ( ! tmp ) { unlock_page ( page ) ; page_cache_release ( page ) ; bytes = min ( bytes , iov_iter_single_seg_count ( ii ) ) ; goto again ; } err = 0 ; req -> pages [ req -> num_pages ] = page ; req -> page_descs [ req -> num_pages ] . length = tmp ; req -> num_pages ++ ; <S2SV_StartBug> iov_iter_advance ( ii , tmp ) ; <S2SV_EndBug> count += tmp ; pos += tmp ; offset += tmp ; if ( offset == PAGE_CACHE_SIZE ) offset = 0 ; if ( ! fc -> big_writes ) break ; } while ( iov_iter_count ( ii ) && count < fc -> max_write && req -> num_pages < req -> max_pages && offset == 0 ) ; return count > 0 ? count : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> flush_dcache_page ( page ) ; iov_iter_advance ( ii , tmp <S2SV_ModStart> num_pages ++ ; <S2SV_ModEnd> count += tmp\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13690\n\n```\nCWE-125 static const u_char * ikev2_auth_print ( netdissect_options * ndo , u_char tpay , const struct isakmp_gen * ext , u_int item_len _U_ , const u_char * ep , uint32_t phase _U_ , uint32_t doi _U_ , uint32_t proto _U_ , int depth _U_ ) { struct ikev2_auth a ; const char * v2_auth [ ] = { \"invalid\" , \"rsasig\" , \"shared-secret\" , \"dsssig\" } ; const u_char * authdata = ( const u_char * ) ext + sizeof ( a ) ; unsigned int len ; <S2SV_StartBug> ND_TCHECK ( * ext ) ; <S2SV_EndBug> UNALIGNED_MEMCPY ( & a , ext , sizeof ( a ) ) ; ikev2_pay_print ( ndo , NPSTR ( tpay ) , a . h . critical ) ; len = ntohs ( a . h . len ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>len=%u<S2SV_blank>method=%s\" , len - 4 , STR_OR_ID ( a . auth_method , v2_auth ) ) ) ; if ( len > 4 ) { if ( ndo -> ndo_vflag > 1 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>authdata=(\" ) ) ; if ( ! rawprint ( ndo , ( const uint8_t * ) authdata , len - sizeof ( a ) ) ) goto trunc ; ND_PRINT ( ( ndo , \")<S2SV_blank>\" ) ) ; } else if ( ndo -> ndo_vflag ) { if ( ! ike_show_somedata ( ndo , authdata , ep ) ) goto trunc ; } } return ( const u_char * ) ext + len ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( tpay ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int len ; ND_TCHECK2 ( * ext , sizeof ( a ) <S2SV_ModEnd> ) ; UNALIGNED_MEMCPY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2211\n\n```\nCWE-264 SYSCALL_DEFINE2 ( osf_getdomainname , char __user * , name , int , namelen ) { unsigned len ; int i ; if ( ! access_ok ( VERIFY_WRITE , name , namelen ) ) return - EFAULT ; len = namelen ; <S2SV_StartBug> if ( namelen > 32 ) <S2SV_EndBug> len = 32 ; down_read ( & uts_sem ) ; for ( i = 0 ; i < len ; ++ i ) { __put_user ( utsname ( ) -> domainname [ i ] , name + i ) ; if ( utsname ( ) -> domainname [ i ] == '\\\\0' ) break ; } up_read ( & uts_sem ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( len <S2SV_ModEnd> > 32 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2634\n\n```\nCWE-399 static int dcbnl_getperm_hwaddr ( struct net_device * netdev , struct nlmsghdr * nlh , u32 seq , struct nlattr * * tb , struct sk_buff * skb ) { u8 perm_addr [ MAX_ADDR_LEN ] ; if ( ! netdev -> dcbnl_ops -> getpermhwaddr ) return - EOPNOTSUPP ; <S2SV_StartBug> netdev -> dcbnl_ops -> getpermhwaddr ( netdev , perm_addr ) ; <S2SV_EndBug> return nla_put ( skb , DCB_ATTR_PERM_HWADDR , sizeof ( perm_addr ) , perm_addr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EOPNOTSUPP ; memset ( perm_addr , 0 , sizeof ( perm_addr ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int mount_entry_on_absolute_rootfs ( struct mntent * mntent , const struct lxc_rootfs * rootfs , const char * lxc_name ) { char * aux ; char path [ MAXPATHLEN ] ; int r , ret = 0 , offset ; const char * lxcpath ; lxcpath = lxc_global_config_value ( \"lxc.lxcpath\" ) ; if ( ! lxcpath ) { ERROR ( \"Out<S2SV_blank>of<S2SV_blank>memory\" ) ; return - 1 ; } r = snprintf ( path , MAXPATHLEN , \"%s/%s/rootfs\" , lxcpath , lxc_name ) ; if ( r < 0 || r >= MAXPATHLEN ) goto skipvarlib ; aux = strstr ( mntent -> mnt_dir , path ) ; if ( aux ) { offset = strlen ( path ) ; goto skipabs ; } skipvarlib : aux = strstr ( mntent -> mnt_dir , rootfs -> path ) ; if ( ! aux ) { WARN ( \"ignoring<S2SV_blank>mount<S2SV_blank>point<S2SV_blank>\\'%s\\'\" , mntent -> mnt_dir ) ; return ret ; } offset = strlen ( rootfs -> path ) ; skipabs : r = snprintf ( path , MAXPATHLEN , \"%s/%s\" , rootfs -> mount , aux + offset ) ; if ( r < 0 || r >= MAXPATHLEN ) { WARN ( \"pathnme<S2SV_blank>too<S2SV_blank>long<S2SV_blank>for<S2SV_blank>\\'%s\\'\" , mntent -> mnt_dir ) ; return - 1 ; } <S2SV_StartBug> return mount_entry_on_generic ( mntent , path ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mntent , path , rootfs -> mount\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3842\n\n```\nCWE-119 static int Downmix_Command ( effect_handle_t self , uint32_t cmdCode , uint32_t cmdSize , void * pCmdData , uint32_t * replySize , void * pReplyData ) { downmix_module_t * pDwmModule = ( downmix_module_t * ) self ; downmix_object_t * pDownmixer ; int retsize ; if ( pDwmModule == NULL || pDwmModule -> context . state == DOWNMIX_STATE_UNINITIALIZED ) { return - EINVAL ; } pDownmixer = ( downmix_object_t * ) & pDwmModule -> context ; ALOGV ( \"Downmix_Command<S2SV_blank>command<S2SV_blank>%\" PRIu32 \"<S2SV_blank>cmdSize<S2SV_blank>%\" PRIu32 , cmdCode , cmdSize ) ; switch ( cmdCode ) { case EFFECT_CMD_INIT : <S2SV_StartBug> if ( pReplyData == NULL || * replySize != sizeof ( int ) ) { <S2SV_EndBug> return - EINVAL ; } * ( int * ) pReplyData = Downmix_Init ( pDwmModule ) ; break ; case EFFECT_CMD_SET_CONFIG : if ( pCmdData == NULL || cmdSize != sizeof ( effect_config_t ) <S2SV_StartBug> || pReplyData == NULL || * replySize != sizeof ( int ) ) { <S2SV_EndBug> return - EINVAL ; } * ( int * ) pReplyData = Downmix_Configure ( pDwmModule , ( effect_config_t * ) pCmdData , false ) ; break ; case EFFECT_CMD_RESET : Downmix_Reset ( pDownmixer , false ) ; break ; case EFFECT_CMD_GET_PARAM : ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_GET_PARAM<S2SV_blank>pCmdData<S2SV_blank>%p,<S2SV_blank>*replySize<S2SV_blank>%\" PRIu32 \",<S2SV_blank>pReplyData:<S2SV_blank>%p\" , pCmdData , * replySize , pReplyData ) ; if ( pCmdData == NULL || cmdSize < ( int ) ( sizeof ( effect_param_t ) + sizeof ( int32_t ) ) || <S2SV_StartBug> pReplyData == NULL || <S2SV_EndBug> * replySize < ( int ) sizeof ( effect_param_t ) + 2 * sizeof ( int32_t ) ) { return - EINVAL ; } effect_param_t * rep = ( effect_param_t * ) pReplyData ; memcpy ( pReplyData , pCmdData , sizeof ( effect_param_t ) + sizeof ( int32_t ) ) ; ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_GET_PARAM<S2SV_blank>param<S2SV_blank>%\" PRId32 \",<S2SV_blank>replySize<S2SV_blank>%\" PRIu32 , * ( int32_t * ) rep -> data , rep -> vsize ) ; rep -> status = Downmix_getParameter ( pDownmixer , * ( int32_t * ) rep -> data , & rep -> vsize , rep -> data + sizeof ( int32_t ) ) ; * replySize = sizeof ( effect_param_t ) + sizeof ( int32_t ) + rep -> vsize ; break ; case EFFECT_CMD_SET_PARAM : ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_SET_PARAM<S2SV_blank>cmdSize<S2SV_blank>%d<S2SV_blank>pCmdData<S2SV_blank>%p,<S2SV_blank>*replySize<S2SV_blank>%\" PRIu32 \",<S2SV_blank>pReplyData<S2SV_blank>%p\" , cmdSize , pCmdData , * replySize , pReplyData ) ; if ( pCmdData == NULL || ( cmdSize < ( int ) ( sizeof ( effect_param_t ) + sizeof ( int32_t ) ) ) <S2SV_StartBug> || pReplyData == NULL || * replySize != ( int ) sizeof ( int32_t ) ) { <S2SV_EndBug> return - EINVAL ; } effect_param_t * cmd = ( effect_param_t * ) pCmdData ; * ( int * ) pReplyData = Downmix_setParameter ( pDownmixer , * ( int32_t * ) cmd -> data , cmd -> vsize , cmd -> data + sizeof ( int32_t ) ) ; break ; case EFFECT_CMD_SET_PARAM_DEFERRED : ALOGW ( \"Downmix_Command<S2SV_blank>command<S2SV_blank>EFFECT_CMD_SET_PARAM_DEFERRED<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>FIXME\" ) ; break ; case EFFECT_CMD_SET_PARAM_COMMIT : ALOGW ( \"Downmix_Command<S2SV_blank>command<S2SV_blank>EFFECT_CMD_SET_PARAM_COMMIT<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>FIXME\" ) ; break ; case EFFECT_CMD_ENABLE : <S2SV_StartBug> if ( pReplyData == NULL || * replySize != sizeof ( int ) ) { <S2SV_EndBug> return - EINVAL ; } if ( pDownmixer -> state != DOWNMIX_STATE_INITIALIZED ) { return - ENOSYS ; } pDownmixer -> state = DOWNMIX_STATE_ACTIVE ; ALOGV ( \"EFFECT_CMD_ENABLE()<S2SV_blank>OK\" ) ; * ( int * ) pReplyData = 0 ; break ; case EFFECT_CMD_DISABLE : <S2SV_StartBug> if ( pReplyData == NULL || * replySize != sizeof ( int ) ) { <S2SV_EndBug> return - EINVAL ; } if ( pDownmixer -> state != DOWNMIX_STATE_ACTIVE ) { return - ENOSYS ; } pDownmixer -> state = DOWNMIX_STATE_INITIALIZED ; ALOGV ( \"EFFECT_CMD_DISABLE()<S2SV_blank>OK\" ) ; * ( int * ) pReplyData = 0 ; break ; case EFFECT_CMD_SET_DEVICE : if ( pCmdData == NULL || cmdSize != ( int ) sizeof ( uint32_t ) ) { return - EINVAL ; } ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_SET_DEVICE:<S2SV_blank>0x%08\" PRIx32 , * ( uint32_t * ) pCmdData ) ; break ; case EFFECT_CMD_SET_VOLUME : { if ( pCmdData == NULL || cmdSize != ( int ) sizeof ( uint32_t ) * 2 ) { return - EINVAL ; } ALOGW ( \"Downmix_Command<S2SV_blank>command<S2SV_blank>EFFECT_CMD_SET_VOLUME<S2SV_blank>not<S2SV_blank>supported,<S2SV_blank>FIXME\" ) ; float left = ( float ) ( * ( uint32_t * ) pCmdData ) / ( 1 << 24 ) ; float right = ( float ) ( * ( ( uint32_t * ) pCmdData + 1 ) ) / ( 1 << 24 ) ; ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_SET_VOLUME:<S2SV_blank>left<S2SV_blank>%f,<S2SV_blank>right<S2SV_blank>%f<S2SV_blank>\" , left , right ) ; break ; } case EFFECT_CMD_SET_AUDIO_MODE : if ( pCmdData == NULL || cmdSize != ( int ) sizeof ( uint32_t ) ) { return - EINVAL ; } ALOGV ( \"Downmix_Command<S2SV_blank>EFFECT_CMD_SET_AUDIO_MODE:<S2SV_blank>%\" PRIu32 , * ( uint32_t * ) pCmdData ) ; break ; case EFFECT_CMD_SET_CONFIG_REVERSE : case EFFECT_CMD_SET_INPUT_DEVICE : break ; default : ALOGW ( \"Downmix_Command<S2SV_blank>invalid<S2SV_blank>command<S2SV_blank>%\" PRIu32 , cmdCode ) ; return - EINVAL ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == NULL || replySize == NULL || <S2SV_ModStart> ) || pReplyData == NULL || replySize <S2SV_ModStart> ) || pReplyData == NULL || replySize <S2SV_ModStart> == NULL || replySize == NULL || <S2SV_ModStart> == NULL || replySize == NULL || <S2SV_ModStart> if ( pReplyData == NULL || replySize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int pfkey_recvmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct pfkey_sock * pfk = pfkey_sk ( sk ) ; struct sk_buff * skb ; int copied , err ; err = - EINVAL ; if ( flags & ~ ( MSG_PEEK | MSG_DONTWAIT | MSG_TRUNC | MSG_CMSG_COMPAT ) ) goto out ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> skb = skb_recv_datagram ( sk , flags , flags & MSG_DONTWAIT , & err ) ; if ( skb == NULL ) goto out ; copied = skb -> len ; if ( copied > len ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } skb_reset_transport_header ( skb ) ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto out_free ; sock_recv_ts_and_drops ( msg , sk , skb ) ; err = ( flags & MSG_TRUNC ) ? skb -> len : copied ; if ( pfk -> dump . dump != NULL && 3 * atomic_read ( & sk -> sk_rmem_alloc ) <= sk -> sk_rcvbuf ) pfkey_do_dump ( pfk ) ; out_free : skb_free_datagram ( sk , skb ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; <S2SV_ModEnd> skb = skb_recv_datagram\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9289\n\n```\nCWE-119 static int cx24116_send_diseqc_msg ( struct dvb_frontend * fe , struct dvb_diseqc_master_cmd * d ) { struct cx24116_state * state = fe -> demodulator_priv ; int i , ret ; <S2SV_StartBug> if ( debug ) { <S2SV_EndBug> printk ( KERN_INFO \"cx24116:<S2SV_blank>%s(\" , __func__ ) ; for ( i = 0 ; i < d -> msg_len ; ) { printk ( KERN_INFO \"0x%02x\" , d -> msg [ i ] ) ; if ( ++ i < d -> msg_len ) printk ( KERN_INFO \",<S2SV_blank>\" ) ; } printk ( \")<S2SV_blank>toneburst=%d\\\\n\" , toneburst ) ; } <S2SV_StartBug> if ( d -> msg_len > ( CX24116_ARGLEN - CX24116_DISEQC_MSGOFS ) ) <S2SV_EndBug> return - EINVAL ; for ( i = 0 ; i < d -> msg_len ; i ++ ) state -> dsec_cmd . args [ CX24116_DISEQC_MSGOFS + i ] = d -> msg [ i ] ; state -> dsec_cmd . args [ CX24116_DISEQC_MSGLEN ] = d -> msg_len ; state -> dsec_cmd . len = CX24116_DISEQC_MSGOFS + state -> dsec_cmd . args [ CX24116_DISEQC_MSGLEN ] ; if ( toneburst == CX24116_DISEQC_MESGCACHE ) return 0 ; else if ( toneburst == CX24116_DISEQC_TONEOFF ) state -> dsec_cmd . args [ CX24116_DISEQC_BURST ] = 0 ; else if ( toneburst == CX24116_DISEQC_TONECACHE ) { if ( d -> msg_len >= 4 && d -> msg [ 2 ] == 0x38 ) state -> dsec_cmd . args [ CX24116_DISEQC_BURST ] = ( ( d -> msg [ 3 ] & 4 ) >> 2 ) ; if ( debug ) dprintk ( \"%s<S2SV_blank>burst=%d\\\\n\" , __func__ , state -> dsec_cmd . args [ CX24116_DISEQC_BURST ] ) ; } ret = cx24116_wait_for_lnb ( fe ) ; if ( ret != 0 ) return ret ; msleep ( 100 ) ; ret = cx24116_cmd_execute ( fe , & state -> dsec_cmd ) ; if ( ret != 0 ) return ret ; msleep ( ( state -> dsec_cmd . args [ CX24116_DISEQC_MSGLEN ] << 4 ) + ( ( toneburst == CX24116_DISEQC_TONEOFF ) ? 30 : 60 ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( d -> msg_len > sizeof ( d -> msg ) ) return - EINVAL ; if ( <S2SV_ModStart> ) ; } <S2SV_ModEnd> for ( i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12901\n\n```\nCWE-125 void eigrp_print ( netdissect_options * ndo , register const u_char * pptr , register u_int len ) { const struct eigrp_common_header * eigrp_com_header ; const struct eigrp_tlv_header * eigrp_tlv_header ; const u_char * tptr , * tlv_tptr ; u_int tlen , eigrp_tlv_len , eigrp_tlv_type , tlv_tlen , byte_length , bit_length ; uint8_t prefix [ 4 ] ; union { const struct eigrp_tlv_general_parm_t * eigrp_tlv_general_parm ; const struct eigrp_tlv_sw_version_t * eigrp_tlv_sw_version ; const struct eigrp_tlv_ip_int_t * eigrp_tlv_ip_int ; const struct eigrp_tlv_ip_ext_t * eigrp_tlv_ip_ext ; const struct eigrp_tlv_at_cable_setup_t * eigrp_tlv_at_cable_setup ; const struct eigrp_tlv_at_int_t * eigrp_tlv_at_int ; const struct eigrp_tlv_at_ext_t * eigrp_tlv_at_ext ; } tlv_ptr ; tptr = pptr ; eigrp_com_header = ( const struct eigrp_common_header * ) pptr ; ND_TCHECK ( * eigrp_com_header ) ; if ( eigrp_com_header -> version != EIGRP_VERSION ) { ND_PRINT ( ( ndo , \"EIGRP<S2SV_blank>version<S2SV_blank>%u<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , eigrp_com_header -> version ) ) ; return ; } if ( ndo -> ndo_vflag < 1 ) { ND_PRINT ( ( ndo , \"EIGRP<S2SV_blank>%s,<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( eigrp_opcode_values , \"unknown<S2SV_blank>(%u)\" , eigrp_com_header -> opcode ) , len ) ) ; return ; } <S2SV_StartBug> tlen = len - sizeof ( struct eigrp_common_header ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\tEIGRP<S2SV_blank>v%u,<S2SV_blank>opcode:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>chksum:<S2SV_blank>0x%04x,<S2SV_blank>Flags:<S2SV_blank>[%s]\\\\n\\\\tseq:<S2SV_blank>0x%08x,<S2SV_blank>ack:<S2SV_blank>0x%08x,<S2SV_blank>AS:<S2SV_blank>%u,<S2SV_blank>length:<S2SV_blank>%u\" , eigrp_com_header -> version , tok2str ( eigrp_opcode_values , \"unknown,<S2SV_blank>type:<S2SV_blank>%u\" , eigrp_com_header -> opcode ) , eigrp_com_header -> opcode , EXTRACT_16BITS ( & eigrp_com_header -> checksum ) , tok2str ( eigrp_common_header_flag_values , \"none\" , EXTRACT_32BITS ( & eigrp_com_header -> flags ) ) , EXTRACT_32BITS ( & eigrp_com_header -> seq ) , EXTRACT_32BITS ( & eigrp_com_header -> ack ) , EXTRACT_32BITS ( & eigrp_com_header -> asn ) , tlen ) ) ; tptr += sizeof ( const struct eigrp_common_header ) ; while ( tlen > 0 ) { ND_TCHECK2 ( * tptr , sizeof ( struct eigrp_tlv_header ) ) ; eigrp_tlv_header = ( const struct eigrp_tlv_header * ) tptr ; eigrp_tlv_len = EXTRACT_16BITS ( & eigrp_tlv_header -> length ) ; eigrp_tlv_type = EXTRACT_16BITS ( & eigrp_tlv_header -> type ) ; if ( eigrp_tlv_len < sizeof ( struct eigrp_tlv_header ) || eigrp_tlv_len > tlen ) { print_unknown_data ( ndo , tptr + sizeof ( struct eigrp_tlv_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(0x%04x),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( eigrp_tlv_values , \"Unknown\" , eigrp_tlv_type ) , eigrp_tlv_type , eigrp_tlv_len ) ) ; <S2SV_StartBug> tlv_tptr = tptr + sizeof ( struct eigrp_tlv_header ) ; <S2SV_EndBug> tlv_tlen = eigrp_tlv_len - sizeof ( struct eigrp_tlv_header ) ; ND_TCHECK2 ( * tptr , eigrp_tlv_len ) ; switch ( eigrp_tlv_type ) { case EIGRP_TLV_GENERAL_PARM : tlv_ptr . eigrp_tlv_general_parm = ( const struct eigrp_tlv_general_parm_t * ) tlv_tptr ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>holdtime:<S2SV_blank>%us,<S2SV_blank>k1<S2SV_blank>%u,<S2SV_blank>k2<S2SV_blank>%u,<S2SV_blank>k3<S2SV_blank>%u,<S2SV_blank>k4<S2SV_blank>%u,<S2SV_blank>k5<S2SV_blank>%u\" , <S2SV_EndBug> EXTRACT_16BITS ( tlv_ptr . eigrp_tlv_general_parm -> holdtime ) , tlv_ptr . eigrp_tlv_general_parm -> k1 , tlv_ptr . eigrp_tlv_general_parm -> k2 , tlv_ptr . eigrp_tlv_general_parm -> k3 , tlv_ptr . eigrp_tlv_general_parm -> k4 , tlv_ptr . eigrp_tlv_general_parm -> k5 ) ) ; break ; case EIGRP_TLV_SW_VERSION : tlv_ptr . eigrp_tlv_sw_version = ( const struct eigrp_tlv_sw_version_t * ) tlv_tptr ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IOS<S2SV_blank>version:<S2SV_blank>%u.%u,<S2SV_blank>EIGRP<S2SV_blank>version<S2SV_blank>%u.%u\" , <S2SV_EndBug> tlv_ptr . eigrp_tlv_sw_version -> ios_major , tlv_ptr . eigrp_tlv_sw_version -> ios_minor , tlv_ptr . eigrp_tlv_sw_version -> eigrp_major , tlv_ptr . eigrp_tlv_sw_version -> eigrp_minor ) ) ; break ; case EIGRP_TLV_IP_INT : tlv_ptr . eigrp_tlv_ip_int = ( const struct eigrp_tlv_ip_int_t * ) tlv_tptr ; <S2SV_StartBug> bit_length = tlv_ptr . eigrp_tlv_ip_int -> plen ; <S2SV_EndBug> if ( bit_length > 32 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>illegal<S2SV_blank>prefix<S2SV_blank>length<S2SV_blank>%u\" , bit_length ) ) ; break ; } byte_length = ( bit_length + 7 ) / 8 ; memset ( prefix , 0 , 4 ) ; memcpy ( prefix , & tlv_ptr . eigrp_tlv_ip_int -> destination , byte_length ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>prefix:<S2SV_blank>%15s/%u,<S2SV_blank>nexthop:<S2SV_blank>\" , ipaddr_string ( ndo , prefix ) , bit_length ) ) ; if ( EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_ip_int -> nexthop ) == 0 ) ND_PRINT ( ( ndo , \"self\" ) ) ; else ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , & tlv_ptr . eigrp_tlv_ip_int -> nexthop ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>delay<S2SV_blank>%u<S2SV_blank>ms,<S2SV_blank>bandwidth<S2SV_blank>%u<S2SV_blank>Kbps,<S2SV_blank>mtu<S2SV_blank>%u,<S2SV_blank>hop<S2SV_blank>%u,<S2SV_blank>reliability<S2SV_blank>%u,<S2SV_blank>load<S2SV_blank>%u\" , ( EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_ip_int -> delay ) / 100 ) , EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_ip_int -> bandwidth ) , EXTRACT_24BITS ( & tlv_ptr . eigrp_tlv_ip_int -> mtu ) , tlv_ptr . eigrp_tlv_ip_int -> hopcount , tlv_ptr . eigrp_tlv_ip_int -> reliability , tlv_ptr . eigrp_tlv_ip_int -> load ) ) ; break ; case EIGRP_TLV_IP_EXT : tlv_ptr . eigrp_tlv_ip_ext = ( const struct eigrp_tlv_ip_ext_t * ) tlv_tptr ; <S2SV_StartBug> bit_length = tlv_ptr . eigrp_tlv_ip_ext -> plen ; <S2SV_EndBug> if ( bit_length > 32 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>illegal<S2SV_blank>prefix<S2SV_blank>length<S2SV_blank>%u\" , bit_length ) ) ; break ; } byte_length = ( bit_length + 7 ) / 8 ; memset ( prefix , 0 , 4 ) ; memcpy ( prefix , & tlv_ptr . eigrp_tlv_ip_ext -> destination , byte_length ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>prefix:<S2SV_blank>%15s/%u,<S2SV_blank>nexthop:<S2SV_blank>\" , ipaddr_string ( ndo , prefix ) , bit_length ) ) ; if ( EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_ip_ext -> nexthop ) == 0 ) ND_PRINT ( ( ndo , \"self\" ) ) ; else ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , & tlv_ptr . eigrp_tlv_ip_ext -> nexthop ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>origin-router<S2SV_blank>%s,<S2SV_blank>origin-as<S2SV_blank>%u,<S2SV_blank>origin-proto<S2SV_blank>%s,<S2SV_blank>flags<S2SV_blank>[0x%02x],<S2SV_blank>tag<S2SV_blank>0x%08x,<S2SV_blank>metric<S2SV_blank>%u\" , ipaddr_string ( ndo , tlv_ptr . eigrp_tlv_ip_ext -> origin_router ) , EXTRACT_32BITS ( tlv_ptr . eigrp_tlv_ip_ext -> origin_as ) , tok2str ( eigrp_ext_proto_id_values , \"unknown\" , tlv_ptr . eigrp_tlv_ip_ext -> proto_id ) , tlv_ptr . eigrp_tlv_ip_ext -> flags , EXTRACT_32BITS ( tlv_ptr . eigrp_tlv_ip_ext -> tag ) , EXTRACT_32BITS ( tlv_ptr . eigrp_tlv_ip_ext -> metric ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>delay<S2SV_blank>%u<S2SV_blank>ms,<S2SV_blank>bandwidth<S2SV_blank>%u<S2SV_blank>Kbps,<S2SV_blank>mtu<S2SV_blank>%u,<S2SV_blank>hop<S2SV_blank>%u,<S2SV_blank>reliability<S2SV_blank>%u,<S2SV_blank>load<S2SV_blank>%u\" , ( EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_ip_ext -> delay ) / 100 ) , EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_ip_ext -> bandwidth ) , EXTRACT_24BITS ( & tlv_ptr . eigrp_tlv_ip_ext -> mtu ) , tlv_ptr . eigrp_tlv_ip_ext -> hopcount , tlv_ptr . eigrp_tlv_ip_ext -> reliability , tlv_ptr . eigrp_tlv_ip_ext -> load ) ) ; break ; case EIGRP_TLV_AT_CABLE_SETUP : tlv_ptr . eigrp_tlv_at_cable_setup = ( const struct eigrp_tlv_at_cable_setup_t * ) tlv_tptr ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Cable-range:<S2SV_blank>%u-%u,<S2SV_blank>Router-ID<S2SV_blank>%u\" , <S2SV_EndBug> EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_cable_setup -> cable_start ) , EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_cable_setup -> cable_end ) , EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_at_cable_setup -> router_id ) ) ) ; break ; case EIGRP_TLV_AT_INT : <S2SV_StartBug> tlv_ptr . eigrp_tlv_at_int = ( const struct eigrp_tlv_at_int_t * ) tlv_tptr ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Cable-Range:<S2SV_blank>%u-%u,<S2SV_blank>nexthop:<S2SV_blank>\" , EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_int -> cable_start ) , EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_int -> cable_end ) ) ) ; if ( EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_at_int -> nexthop ) == 0 ) ND_PRINT ( ( ndo , \"self\" ) ) ; else ND_PRINT ( ( ndo , \"%u.%u\" , EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_int -> nexthop ) , EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_int -> nexthop [ 2 ] ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>delay<S2SV_blank>%u<S2SV_blank>ms,<S2SV_blank>bandwidth<S2SV_blank>%u<S2SV_blank>Kbps,<S2SV_blank>mtu<S2SV_blank>%u,<S2SV_blank>hop<S2SV_blank>%u,<S2SV_blank>reliability<S2SV_blank>%u,<S2SV_blank>load<S2SV_blank>%u\" , ( EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_at_int -> delay ) / 100 ) , EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_at_int -> bandwidth ) , EXTRACT_24BITS ( & tlv_ptr . eigrp_tlv_at_int -> mtu ) , tlv_ptr . eigrp_tlv_at_int -> hopcount , tlv_ptr . eigrp_tlv_at_int -> reliability , tlv_ptr . eigrp_tlv_at_int -> load ) ) ; break ; case EIGRP_TLV_AT_EXT : tlv_ptr . eigrp_tlv_at_ext = ( const struct eigrp_tlv_at_ext_t * ) tlv_tptr ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Cable-Range:<S2SV_blank>%u-%u,<S2SV_blank>nexthop:<S2SV_blank>\" , <S2SV_EndBug> EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_ext -> cable_start ) , EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_ext -> cable_end ) ) ) ; if ( EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_at_ext -> nexthop ) == 0 ) ND_PRINT ( ( ndo , \"self\" ) ) ; else ND_PRINT ( ( ndo , \"%u.%u\" , EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_ext -> nexthop ) , EXTRACT_16BITS ( & tlv_ptr . eigrp_tlv_at_ext -> nexthop [ 2 ] ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>origin-router<S2SV_blank>%u,<S2SV_blank>origin-as<S2SV_blank>%u,<S2SV_blank>origin-proto<S2SV_blank>%s,<S2SV_blank>flags<S2SV_blank>[0x%02x],<S2SV_blank>tag<S2SV_blank>0x%08x,<S2SV_blank>metric<S2SV_blank>%u\" , EXTRACT_32BITS ( tlv_ptr . eigrp_tlv_at_ext -> origin_router ) , EXTRACT_32BITS ( tlv_ptr . eigrp_tlv_at_ext -> origin_as ) , tok2str ( eigrp_ext_proto_id_values , \"unknown\" , tlv_ptr . eigrp_tlv_at_ext -> proto_id ) , tlv_ptr . eigrp_tlv_at_ext -> flags , EXTRACT_32BITS ( tlv_ptr . eigrp_tlv_at_ext -> tag ) , EXTRACT_16BITS ( tlv_ptr . eigrp_tlv_at_ext -> metric ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>delay<S2SV_blank>%u<S2SV_blank>ms,<S2SV_blank>bandwidth<S2SV_blank>%u<S2SV_blank>Kbps,<S2SV_blank>mtu<S2SV_blank>%u,<S2SV_blank>hop<S2SV_blank>%u,<S2SV_blank>reliability<S2SV_blank>%u,<S2SV_blank>load<S2SV_blank>%u\" , ( EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_at_ext -> delay ) / 100 ) , EXTRACT_32BITS ( & tlv_ptr . eigrp_tlv_at_ext -> bandwidth ) , EXTRACT_24BITS ( & tlv_ptr . eigrp_tlv_at_ext -> mtu ) , tlv_ptr . eigrp_tlv_at_ext -> hopcount , tlv_ptr . eigrp_tlv_at_ext -> reliability , tlv_ptr . eigrp_tlv_at_ext -> load ) ) ; break ; case EIGRP_TLV_AUTH : case EIGRP_TLV_SEQ : case EIGRP_TLV_MCAST_SEQ : case EIGRP_TLV_IPX_INT : case EIGRP_TLV_IPX_EXT : default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tlv_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlv_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , tptr + sizeof ( struct eigrp_tlv_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , eigrp_tlv_len - sizeof ( struct eigrp_tlv_header ) ) ; tptr += eigrp_tlv_len ; tlen -= eigrp_tlv_len ; } return ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>exceeded<S2SV_blank>snapshot\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } if ( len < sizeof ( struct eigrp_common_header ) ) { ND_PRINT ( ( ndo , \"EIGRP<S2SV_blank>%s,<S2SV_blank>length:<S2SV_blank>%u<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , tok2str ( eigrp_opcode_values , \"unknown<S2SV_blank>(%u)\" , eigrp_com_header -> opcode ) , len , ( u_int ) sizeof ( struct eigrp_common_header ) ) ) ; return ; } <S2SV_ModStart> ) ) ; if ( eigrp_tlv_len < sizeof ( struct eigrp_tlv_header ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( u_int ) sizeof ( struct eigrp_tlv_header ) ) ) ; break ; } <S2SV_ModStart> ) tlv_tptr ; if ( tlv_tlen < sizeof ( * tlv_ptr . eigrp_tlv_general_parm ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( u_int ) ( sizeof ( struct eigrp_tlv_header ) + sizeof ( * tlv_ptr . eigrp_tlv_general_parm ) ) ) ) ; break ; } <S2SV_ModStart> ) tlv_tptr ; if ( tlv_tlen < sizeof ( * tlv_ptr . eigrp_tlv_sw_version ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( u_int ) ( sizeof ( struct eigrp_tlv_header ) + sizeof ( * tlv_ptr . eigrp_tlv_sw_version ) ) ) ) ; break ; } <S2SV_ModStart> ) tlv_tptr ; if ( tlv_tlen < sizeof ( * tlv_ptr . eigrp_tlv_ip_int ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( u_int ) ( sizeof ( struct eigrp_tlv_header ) + sizeof ( * tlv_ptr . eigrp_tlv_ip_int ) ) ) ) ; break ; } <S2SV_ModStart> ) tlv_tptr ; if ( tlv_tlen < sizeof ( * tlv_ptr . eigrp_tlv_ip_ext ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( u_int ) ( sizeof ( struct eigrp_tlv_header ) + sizeof ( * tlv_ptr . eigrp_tlv_ip_ext ) ) ) ) ; break ; } <S2SV_ModStart> ) tlv_tptr ; if ( tlv_tlen < sizeof ( * tlv_ptr . eigrp_tlv_at_cable_setup ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( u_int ) ( sizeof ( struct eigrp_tlv_header ) + sizeof ( * tlv_ptr . eigrp_tlv_at_cable_setup ) ) ) ) ; break ; } <S2SV_ModStart> ) tlv_tptr ; if ( tlv_tlen < sizeof ( * tlv_ptr . eigrp_tlv_at_int ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( u_int ) ( sizeof ( struct eigrp_tlv_header ) + sizeof ( * tlv_ptr . eigrp_tlv_at_int ) ) ) ) ; break ; } <S2SV_ModStart> ) tlv_tptr ; if ( tlv_tlen < sizeof ( * tlv_ptr . eigrp_tlv_at_ext ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short,<S2SV_blank><<S2SV_blank>%u)\" , ( u_int ) ( sizeof ( struct eigrp_tlv_header ) + sizeof ( * tlv_ptr . eigrp_tlv_at_ext ) ) ) ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2038\n\n```\nCWE-20 static int nfs_can_extend_write ( struct file * file , struct page * page , struct inode * inode ) { if ( file -> f_flags & O_DSYNC ) return 0 ; <S2SV_StartBug> if ( NFS_PROTO ( inode ) -> have_delegation ( inode , FMODE_WRITE ) ) <S2SV_EndBug> return 1 ; <S2SV_StartBug> if ( nfs_write_pageuptodate ( page , inode ) && ( inode -> i_flock == NULL || <S2SV_EndBug> ( inode -> i_flock -> fl_start == 0 && inode -> i_flock -> fl_end == OFFSET_MAX && <S2SV_StartBug> inode -> i_flock -> fl_type != F_RDLCK ) ) ) <S2SV_EndBug> return 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! nfs_write_pageuptodate ( page , inode ) ) return 0 ; if ( <S2SV_ModStart> ; if ( <S2SV_ModEnd> inode -> i_flock <S2SV_ModStart> F_RDLCK ) ) <S2SV_ModEnd> return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20762\n\n```\nCWE-119 void set_cfg_option ( char * opt_string ) { char * sep , * sep2 , szSec [ 1024 ] , szKey [ 1024 ] , szVal [ 1024 ] ; sep = strchr ( opt_string , ':' ) ; if ( ! sep ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>expected<S2SV_blank>Section:Name=Value\\\\n\" , opt_string ) ; return ; } { const size_t sepIdx = sep - opt_string ; <S2SV_StartBug> strncpy ( szSec , opt_string , sepIdx ) ; <S2SV_EndBug> szSec [ sepIdx ] = 0 ; } sep ++ ; sep2 = strchr ( sep , '=' ) ; if ( ! sep2 ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>expected<S2SV_blank>Section:Name=Value\\\\n\" , opt_string ) ; return ; } { const size_t sepIdx = sep2 - sep ; <S2SV_StartBug> strncpy ( szKey , sep , sepIdx ) ; <S2SV_EndBug> szKey [ sepIdx ] = 0 ; <S2SV_StartBug> strcpy ( szVal , sep2 + 1 ) ; <S2SV_EndBug> } if ( ! stricmp ( szKey , \"*\" ) ) { if ( stricmp ( szVal , \"null\" ) ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>expected<S2SV_blank>Section:*=null\\\\n\" , opt_string ) ; return ; } gf_cfg_del_section ( cfg_file , szSec ) ; return ; } if ( ! stricmp ( szVal , \"null\" ) ) { szVal [ 0 ] = 0 ; } gf_cfg_set_key ( cfg_file , szSec , szKey , szVal [ 0 ] ? szVal : NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - opt_string ; if ( sepIdx >= sizeof ( szSec ) ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>Section<S2SV_blank>name<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\\\\n\" , opt_string ) ; return ; } <S2SV_ModStart> - sep ; if ( sepIdx >= sizeof ( szKey ) ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>key<S2SV_blank>name<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\\\\n\" , opt_string ) ; return ; } <S2SV_ModStart> = 0 ; if ( strlen ( <S2SV_ModEnd> sep2 + 1 <S2SV_ModStart> + 1 ) >= sizeof ( szVal ) ) { fprintf ( stderr , \"Badly<S2SV_blank>formatted<S2SV_blank>option<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>value<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\\\\n\" , opt_string ) ; return ; } strcpy ( szVal , sep2 + 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999011\n\n```\nCWE-119 static int parse_video_info ( AVIOContext * pb , AVStream * st ) { uint16_t size_asf ; uint32_t size_bmp ; unsigned int tag ; st -> codecpar -> width = avio_rl32 ( pb ) ; st -> codecpar -> height = avio_rl32 ( pb ) ; avio_skip ( pb , 1 ) ; size_asf = avio_rl16 ( pb ) ; tag = ff_get_bmp_header ( pb , st , & size_bmp ) ; st -> codecpar -> codec_tag = tag ; st -> codecpar -> codec_id = ff_codec_get_id ( ff_codec_bmp_tags , tag ) ; size_bmp = FFMAX ( size_asf , size_bmp ) ; <S2SV_StartBug> if ( size_bmp > BMP_HEADER_SIZE ) { <S2SV_EndBug> int ret ; st -> codecpar -> extradata_size = size_bmp - BMP_HEADER_SIZE ; if ( ! ( st -> codecpar -> extradata = av_malloc ( st -> codecpar -> extradata_size + AV_INPUT_BUFFER_PADDING_SIZE ) ) ) { st -> codecpar -> extradata_size = 0 ; return AVERROR ( ENOMEM ) ; } memset ( st -> codecpar -> extradata + st -> codecpar -> extradata_size , 0 , AV_INPUT_BUFFER_PADDING_SIZE ) ; if ( ( ret = avio_read ( pb , st -> codecpar -> extradata , st -> codecpar -> extradata_size ) ) < 0 ) return ret ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_bmp > BMP_HEADER_SIZE && size_bmp < INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9728\n\n```\nCWE-119 static int udf_pc_to_char ( struct super_block * sb , unsigned char * from , int fromlen , unsigned char * to , int tolen ) { struct pathComponent * pc ; int elen = 0 ; int comp_len ; unsigned char * p = to ; tolen -- ; while ( elen < fromlen ) { pc = ( struct pathComponent * ) ( from + elen ) ; <S2SV_StartBug> switch ( pc -> componentType ) { <S2SV_EndBug> case 1 : if ( pc -> lengthComponentIdent > 0 ) <S2SV_StartBug> break ; <S2SV_EndBug> case 2 : if ( tolen == 0 ) return - ENAMETOOLONG ; p = to ; * p ++ = '/' ; tolen -- ; break ; case 3 : if ( tolen < 3 ) return - ENAMETOOLONG ; memcpy ( p , \"../\" , 3 ) ; p += 3 ; tolen -= 3 ; break ; case 4 : if ( tolen < 2 ) return - ENAMETOOLONG ; memcpy ( p , \"./\" , 2 ) ; p += 2 ; tolen -= 2 ; break ; <S2SV_StartBug> case 5 : <S2SV_EndBug> comp_len = udf_get_filename ( sb , pc -> componentIdent , pc -> lengthComponentIdent , p , tolen ) ; p += comp_len ; tolen -= comp_len ; if ( tolen == 0 ) return - ENAMETOOLONG ; * p ++ = '/' ; tolen -- ; break ; } <S2SV_StartBug> elen += sizeof ( struct pathComponent ) + pc -> lengthComponentIdent ; <S2SV_EndBug> } if ( p > to + 1 ) p [ - 1 ] = '\\\\0' ; else p [ 0 ] = '\\\\0' ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> elen ) ; elen += sizeof ( struct pathComponent ) ; <S2SV_ModStart> > 0 ) { elen += pc -> lengthComponentIdent ; break ; } <S2SV_ModEnd> case 2 : <S2SV_ModStart> case 5 : elen += pc -> lengthComponentIdent ; if ( elen > fromlen ) return - EIO ; <S2SV_ModStart> break ; } <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3153\n\n```\nCWE-269 static int futex_requeue ( u32 __user * uaddr1 , unsigned int flags , u32 __user * uaddr2 , int nr_wake , int nr_requeue , u32 * cmpval , int requeue_pi ) { union futex_key key1 = FUTEX_KEY_INIT , key2 = FUTEX_KEY_INIT ; int drop_count = 0 , task_count = 0 , ret ; struct futex_pi_state * pi_state = NULL ; struct futex_hash_bucket * hb1 , * hb2 ; struct futex_q * this , * next ; if ( requeue_pi ) { <S2SV_StartBug> if ( refill_pi_state_cache ( ) ) <S2SV_EndBug> return - ENOMEM ; if ( nr_wake != 1 ) return - EINVAL ; } retry : if ( pi_state != NULL ) { free_pi_state ( pi_state ) ; pi_state = NULL ; } ret = get_futex_key ( uaddr1 , flags & FLAGS_SHARED , & key1 , VERIFY_READ ) ; if ( unlikely ( ret != 0 ) ) goto out ; ret = get_futex_key ( uaddr2 , flags & FLAGS_SHARED , & key2 , requeue_pi ? VERIFY_WRITE : VERIFY_READ ) ; if ( unlikely ( ret != 0 ) ) <S2SV_StartBug> goto out_put_key1 ; <S2SV_EndBug> hb1 = hash_futex ( & key1 ) ; hb2 = hash_futex ( & key2 ) ; retry_private : hb_waiters_inc ( hb2 ) ; double_lock_hb ( hb1 , hb2 ) ; if ( likely ( cmpval != NULL ) ) { u32 curval ; ret = get_futex_value_locked ( & curval , uaddr1 ) ; if ( unlikely ( ret ) ) { double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; ret = get_user ( curval , uaddr1 ) ; if ( ret ) goto out_put_keys ; if ( ! ( flags & FLAGS_SHARED ) ) goto retry_private ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; goto retry ; } if ( curval != * cmpval ) { ret = - EAGAIN ; goto out_unlock ; } } if ( requeue_pi && ( task_count - nr_wake < nr_requeue ) ) { ret = futex_proxy_trylock_atomic ( uaddr2 , hb1 , hb2 , & key1 , & key2 , & pi_state , nr_requeue ) ; if ( ret > 0 ) { WARN_ON ( pi_state ) ; drop_count ++ ; task_count ++ ; ret = lookup_pi_state ( ret , hb2 , & key2 , & pi_state , NULL ) ; } switch ( ret ) { case 0 : break ; case - EFAULT : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; ret = fault_in_user_writeable ( uaddr2 ) ; if ( ! ret ) goto retry ; goto out ; case - EAGAIN : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; cond_resched ( ) ; goto retry ; default : goto out_unlock ; } } plist_for_each_entry_safe ( this , next , & hb1 -> chain , list ) { if ( task_count - nr_wake >= nr_requeue ) break ; if ( ! match_futex ( & this -> key , & key1 ) ) continue ; if ( ( requeue_pi && ! this -> rt_waiter ) || ( ! requeue_pi && this -> rt_waiter ) || this -> pi_state ) { ret = - EINVAL ; break ; } if ( ++ task_count <= nr_wake && ! requeue_pi ) { wake_futex ( this ) ; continue ; } if ( requeue_pi && ! match_futex ( this -> requeue_pi_key , & key2 ) ) { ret = - EINVAL ; break ; } if ( requeue_pi ) { atomic_inc ( & pi_state -> refcount ) ; this -> pi_state = pi_state ; ret = rt_mutex_start_proxy_lock ( & pi_state -> pi_mutex , this -> rt_waiter , this -> task , 1 ) ; if ( ret == 1 ) { requeue_pi_wake_futex ( this , & key2 , hb2 ) ; drop_count ++ ; continue ; } else if ( ret ) { this -> pi_state = NULL ; free_pi_state ( pi_state ) ; goto out_unlock ; } } requeue_futex ( this , hb1 , hb2 , & key2 ) ; drop_count ++ ; } out_unlock : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; while ( -- drop_count >= 0 ) drop_futex_key_refs ( & key1 ) ; out_put_keys : put_futex_key ( & key2 ) ; out_put_key1 : put_futex_key ( & key1 ) ; out : if ( pi_state != NULL ) free_pi_state ( pi_state ) ; return ret ? ret : task_count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( uaddr1 == uaddr2 ) return - EINVAL ; if ( <S2SV_ModStart> goto out_put_key1 ; if ( requeue_pi && match_futex ( & key1 , & key2 ) ) { ret = - EINVAL ; goto out_put_keys ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static void keyring_describe ( const struct key * keyring , struct seq_file * m ) { if ( keyring -> description ) seq_puts ( m , keyring -> description ) ; else seq_puts ( m , \"[anon]\" ) ; <S2SV_StartBug> if ( key_is_instantiated ( keyring ) ) { <S2SV_EndBug> if ( keyring -> keys . nr_leaves_on_tree != 0 ) seq_printf ( m , \":<S2SV_blank>%lu\" , keyring -> keys . nr_leaves_on_tree ) ; else seq_puts ( m , \":<S2SV_blank>empty\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( keyring )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 Datum hstore_from_record ( PG_FUNCTION_ARGS ) { HeapTupleHeader rec ; int32 buflen ; HStore * out ; Pairs * pairs ; Oid tupType ; int32 tupTypmod ; TupleDesc tupdesc ; HeapTupleData tuple ; RecordIOData * my_extra ; int ncolumns ; int i , j ; Datum * values ; bool * nulls ; if ( PG_ARGISNULL ( 0 ) ) { Oid argtype = get_fn_expr_argtype ( fcinfo -> flinfo , 0 ) ; tupType = argtype ; tupTypmod = - 1 ; rec = NULL ; } else { rec = PG_GETARG_HEAPTUPLEHEADER ( 0 ) ; tupType = HeapTupleHeaderGetTypeId ( rec ) ; tupTypmod = HeapTupleHeaderGetTypMod ( rec ) ; } tupdesc = lookup_rowtype_tupdesc ( tupType , tupTypmod ) ; ncolumns = tupdesc -> natts ; my_extra = ( RecordIOData * ) fcinfo -> flinfo -> fn_extra ; if ( my_extra == NULL || my_extra -> ncolumns != ncolumns ) { fcinfo -> flinfo -> fn_extra = MemoryContextAlloc ( fcinfo -> flinfo -> fn_mcxt , sizeof ( RecordIOData ) - sizeof ( ColumnIOData ) + ncolumns * sizeof ( ColumnIOData ) ) ; my_extra = ( RecordIOData * ) fcinfo -> flinfo -> fn_extra ; my_extra -> record_type = InvalidOid ; my_extra -> record_typmod = 0 ; } if ( my_extra -> record_type != tupType || my_extra -> record_typmod != tupTypmod ) { MemSet ( my_extra , 0 , sizeof ( RecordIOData ) - sizeof ( ColumnIOData ) + ncolumns * sizeof ( ColumnIOData ) ) ; my_extra -> record_type = tupType ; my_extra -> record_typmod = tupTypmod ; my_extra -> ncolumns = ncolumns ; } <S2SV_StartBug> pairs = palloc ( ncolumns * sizeof ( Pairs ) ) ; <S2SV_EndBug> if ( rec ) { tuple . t_len = HeapTupleHeaderGetDatumLength ( rec ) ; ItemPointerSetInvalid ( & ( tuple . t_self ) ) ; tuple . t_tableOid = InvalidOid ; tuple . t_data = rec ; values = ( Datum * ) palloc ( ncolumns * sizeof ( Datum ) ) ; nulls = ( bool * ) palloc ( ncolumns * sizeof ( bool ) ) ; heap_deform_tuple ( & tuple , tupdesc , values , nulls ) ; } else { values = NULL ; nulls = NULL ; } for ( i = 0 , j = 0 ; i < ncolumns ; ++ i ) { ColumnIOData * column_info = & my_extra -> columns [ i ] ; Oid column_type = tupdesc -> attrs [ i ] -> atttypid ; char * value ; if ( tupdesc -> attrs [ i ] -> attisdropped ) continue ; pairs [ j ] . key = NameStr ( tupdesc -> attrs [ i ] -> attname ) ; pairs [ j ] . keylen = hstoreCheckKeyLen ( strlen ( NameStr ( tupdesc -> attrs [ i ] -> attname ) ) ) ; if ( ! nulls || nulls [ i ] ) { pairs [ j ] . val = NULL ; pairs [ j ] . vallen = 4 ; pairs [ j ] . isnull = true ; pairs [ j ] . needfree = false ; ++ j ; continue ; } if ( column_info -> column_type != column_type ) { bool typIsVarlena ; getTypeOutputInfo ( column_type , & column_info -> typiofunc , & typIsVarlena ) ; fmgr_info_cxt ( column_info -> typiofunc , & column_info -> proc , fcinfo -> flinfo -> fn_mcxt ) ; column_info -> column_type = column_type ; } value = OutputFunctionCall ( & column_info -> proc , values [ i ] ) ; pairs [ j ] . val = value ; pairs [ j ] . vallen = hstoreCheckValLen ( strlen ( value ) ) ; pairs [ j ] . isnull = false ; pairs [ j ] . needfree = false ; ++ j ; } ncolumns = hstoreUniquePairs ( pairs , j , & buflen ) ; out = hstorePairs ( pairs , ncolumns , buflen ) ; ReleaseTupleDesc ( tupdesc ) ; PG_RETURN_POINTER ( out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ncolumns ; } Assert ( ncolumns <= MaxTupleAttributeNumber ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t enc28j60ReceivePacket ( NetInterface * interface ) { error_t error ; <S2SV_StartBug> uint16_t n ; <S2SV_EndBug> uint16_t status ; <S2SV_StartBug> Enc28j60Context * context ; <S2SV_EndBug> context = ( Enc28j60Context * ) interface -> nicContext ; <S2SV_StartBug> if ( enc28j60ReadReg ( interface , ENC28J60_REG_EPKTCNT ) ) <S2SV_EndBug> { enc28j60WriteReg ( interface , ENC28J60_REG_ERDPTL , LSB ( context -> nextPacket ) ) ; <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERDPTH , MSB ( context -> nextPacket ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60ReadBuffer ( interface , ( uint8_t * ) & context -> nextPacket , sizeof ( uint16_t ) ) ; <S2SV_EndBug> enc28j60ReadBuffer ( interface , ( uint8_t * ) & n , sizeof ( uint16_t ) ) ; enc28j60ReadBuffer ( interface , ( uint8_t * ) & status , sizeof ( uint16_t ) ) ; <S2SV_StartBug> if ( ( status & RSV_RECEIVED_OK ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> n = MIN ( n , ETH_MAX_FRAME_SIZE ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60ReadBuffer ( interface , context -> rxBuffer , n ) ; <S2SV_EndBug> error = NO_ERROR ; } else { error = ERROR_INVALID_PACKET ; } if ( context -> nextPacket == ENC28J60_RX_BUFFER_START ) { <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXRDPTL , LSB ( ENC28J60_RX_BUFFER_STOP ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXRDPTH , MSB ( ENC28J60_RX_BUFFER_STOP ) ) ; <S2SV_EndBug> } else { <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXRDPTL , LSB ( context -> nextPacket - 1 ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXRDPTH , MSB ( context -> nextPacket - 1 ) ) ; <S2SV_EndBug> } <S2SV_StartBug> enc28j60SetBit ( interface , ENC28J60_REG_ECON2 , ECON2_PKTDEC ) ; <S2SV_EndBug> } else { error = ERROR_BUFFER_EMPTY ; } if ( ! error ) { NetRxAncillary ancillary ; ancillary = NET_DEFAULT_RX_ANCILLARY ; <S2SV_StartBug> nicProcessPacket ( interface , context -> rxBuffer , n , & ancillary ) ; <S2SV_EndBug> } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error ; uint16_t length <S2SV_ModEnd> ; uint16_t status <S2SV_ModStart> uint16_t status ; uint8_t header [ 6 ] ; <S2SV_ModStart> ( interface , ENC28J60_EPKTCNT ) != 0 ) { enc28j60WriteReg ( interface , ENC28J60_ERDPTL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ( interface , ENC28J60_ERDPTH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ( interface , header <S2SV_ModEnd> , sizeof ( <S2SV_ModStart> , sizeof ( header ) ) ; context -> nextPacket = LOAD16LE ( header ) ; length = LOAD16LE ( header + 2 ) ; status = LOAD16LE ( header + 4 <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( status & ENC28J60_RSV_RECEIVED_OK <S2SV_ModEnd> ) != 0 <S2SV_ModStart> 0 ) { length <S2SV_ModEnd> = MIN ( <S2SV_ModStart> = MIN ( length <S2SV_ModEnd> , ETH_MAX_FRAME_SIZE ) <S2SV_ModStart> -> rxBuffer , length <S2SV_ModEnd> ) ; error <S2SV_ModStart> ( interface , ENC28J60_ERXRDPTL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXRDPTH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXRDPTL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXRDPTH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ( interface , ENC28J60_ECON2 , ENC28J60_ECON2_PKTDEC <S2SV_ModEnd> ) ; } <S2SV_ModStart> -> rxBuffer , length <S2SV_ModEnd> , & ancillary\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12439\n\n```\nCWE-20 int main ( int argc , char * * argv ) { mode_t old_umask ; <S2SV_StartBug> cleanup_free char * base_path = NULL ; <S2SV_EndBug> int clone_flags ; char * old_cwd = NULL ; pid_t pid ; int event_fd = - 1 ; int child_wait_fd = - 1 ; int setup_finished_pipe [ ] = { - 1 , - 1 } ; const char * new_cwd ; uid_t ns_uid ; gid_t ns_gid ; struct stat sbuf ; uint64_t val ; int res UNUSED ; cleanup_free char * seccomp_data = NULL ; size_t seccomp_len ; struct sock_fprog seccomp_prog ; cleanup_free char * args_data = NULL ; if ( argc == 2 && ( strcmp ( argv [ 1 ] , \"--version\" ) == 0 ) ) print_version_and_exit ( ) ; real_uid = getuid ( ) ; real_gid = getgid ( ) ; acquire_privs ( ) ; if ( prctl ( PR_SET_NO_NEW_PRIVS , 1 , 0 , 0 , 0 ) < 0 ) die_with_error ( \"prctl(PR_SET_NO_NEW_CAPS)<S2SV_blank>failed\" ) ; read_overflowids ( ) ; argv0 = argv [ 0 ] ; if ( isatty ( 1 ) ) host_tty_dev = ttyname ( 1 ) ; argv ++ ; argc -- ; if ( argc == 0 ) usage ( EXIT_FAILURE , stderr ) ; parse_args ( & argc , ( const char * * * ) & argv ) ; args_data = opt_args_data ; opt_args_data = NULL ; if ( ( requested_caps [ 0 ] || requested_caps [ 1 ] ) && is_privileged ) die ( \"--cap-add<S2SV_blank>in<S2SV_blank>setuid<S2SV_blank>mode<S2SV_blank>can<S2SV_blank>be<S2SV_blank>used<S2SV_blank>only<S2SV_blank>by<S2SV_blank>root\" ) ; if ( opt_userns_block_fd != - 1 && ! opt_unshare_user ) die ( \"--userns-block-fd<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( opt_userns_block_fd != - 1 && opt_info_fd == - 1 ) die ( \"--userns-block-fd<S2SV_blank>requires<S2SV_blank>--info-fd\" ) ; if ( ! is_privileged && getuid ( ) != 0 ) opt_unshare_user = TRUE ; # ifdef ENABLE_REQUIRE_USERNS if ( is_privileged && getuid ( ) != 0 ) opt_unshare_user = TRUE ; # endif if ( opt_unshare_user_try && stat ( \"/proc/self/ns/user\" , & sbuf ) == 0 ) { bool disabled = FALSE ; if ( stat ( \"/sys/module/user_namespace/parameters/enable\" , & sbuf ) == 0 ) { cleanup_free char * enable = NULL ; enable = load_file_at ( AT_FDCWD , \"/sys/module/user_namespace/parameters/enable\" ) ; if ( enable != NULL && enable [ 0 ] == 'N' ) disabled = TRUE ; } if ( stat ( \"/proc/sys/user/max_user_namespaces\" , & sbuf ) == 0 ) { cleanup_free char * max_user_ns = NULL ; max_user_ns = load_file_at ( AT_FDCWD , \"/proc/sys/user/max_user_namespaces\" ) ; if ( max_user_ns != NULL && strcmp ( max_user_ns , \"0\\\\n\" ) == 0 ) disabled = TRUE ; } if ( ! disabled ) opt_unshare_user = TRUE ; } if ( argc == 0 ) usage ( EXIT_FAILURE , stderr ) ; __debug__ ( ( \"Creating<S2SV_blank>root<S2SV_blank>mount<S2SV_blank>point\\\\n\" ) ) ; if ( opt_sandbox_uid == - 1 ) opt_sandbox_uid = real_uid ; if ( opt_sandbox_gid == - 1 ) opt_sandbox_gid = real_gid ; if ( ! opt_unshare_user && opt_sandbox_uid != real_uid ) die ( \"Specifying<S2SV_blank>--uid<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( ! opt_unshare_user && opt_sandbox_gid != real_gid ) die ( \"Specifying<S2SV_blank>--gid<S2SV_blank>requires<S2SV_blank>--unshare-user\" ) ; if ( ! opt_unshare_uts && opt_sandbox_hostname != NULL ) die ( \"Specifying<S2SV_blank>--hostname<S2SV_blank>requires<S2SV_blank>--unshare-uts\" ) ; if ( opt_as_pid_1 && ! opt_unshare_pid ) die ( \"Specifying<S2SV_blank>--as-pid-1<S2SV_blank>requires<S2SV_blank>--unshare-pid\" ) ; if ( opt_as_pid_1 && lock_files != NULL ) die ( \"Specifying<S2SV_blank>--as-pid-1<S2SV_blank>and<S2SV_blank>--lock-file<S2SV_blank>is<S2SV_blank>not<S2SV_blank>permitted\" ) ; proc_fd = open ( \"/proc\" , O_PATH ) ; if ( proc_fd == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>open<S2SV_blank>/proc\" ) ; <S2SV_StartBug> base_path = xasprintf ( \"/run/user/%d/.bubblewrap\" , real_uid ) ; <S2SV_EndBug> if ( ensure_dir ( base_path , 0755 ) ) { free ( base_path ) ; base_path = xasprintf ( \"/tmp/.bubblewrap-%d\" , real_uid ) ; if ( ensure_dir ( base_path , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>root<S2SV_blank>mountpoint<S2SV_blank>failed\" ) ; } __debug__ ( ( \"creating<S2SV_blank>new<S2SV_blank>namespace\\\\n\" ) ) ; if ( opt_unshare_pid && ! opt_as_pid_1 ) { event_fd = eventfd ( 0 , EFD_CLOEXEC | EFD_NONBLOCK ) ; if ( event_fd == - 1 ) die_with_error ( \"eventfd()\" ) ; } block_sigchild ( ) ; clone_flags = SIGCHLD | CLONE_NEWNS ; if ( opt_unshare_user ) clone_flags |= CLONE_NEWUSER ; if ( opt_unshare_pid ) clone_flags |= CLONE_NEWPID ; if ( opt_unshare_net ) clone_flags |= CLONE_NEWNET ; if ( opt_unshare_ipc ) clone_flags |= CLONE_NEWIPC ; if ( opt_unshare_uts ) clone_flags |= CLONE_NEWUTS ; if ( opt_unshare_cgroup ) { if ( stat ( \"/proc/self/ns/cgroup\" , & sbuf ) ) { if ( errno == ENOENT ) die ( \"Cannot<S2SV_blank>create<S2SV_blank>new<S2SV_blank>cgroup<S2SV_blank>namespace<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>it\" ) ; else die_with_error ( \"stat<S2SV_blank>on<S2SV_blank>/proc/self/ns/cgroup<S2SV_blank>failed\" ) ; } clone_flags |= CLONE_NEWCGROUP ; } if ( opt_unshare_cgroup_try ) if ( ! stat ( \"/proc/self/ns/cgroup\" , & sbuf ) ) clone_flags |= CLONE_NEWCGROUP ; child_wait_fd = eventfd ( 0 , EFD_CLOEXEC ) ; if ( child_wait_fd == - 1 ) die_with_error ( \"eventfd()\" ) ; if ( opt_json_status_fd != - 1 ) { int ret ; ret = pipe2 ( setup_finished_pipe , O_CLOEXEC ) ; if ( ret == - 1 ) die_with_error ( \"pipe2()\" ) ; } pid = raw_clone ( clone_flags , NULL ) ; if ( pid == - 1 ) { if ( opt_unshare_user ) { if ( errno == EINVAL ) die ( \"Creating<S2SV_blank>new<S2SV_blank>namespace<S2SV_blank>failed,<S2SV_blank>likely<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>user<S2SV_blank>namespaces.<S2SV_blank><S2SV_blank>bwrap<S2SV_blank>must<S2SV_blank>be<S2SV_blank>installed<S2SV_blank>setuid<S2SV_blank>on<S2SV_blank>such<S2SV_blank>systems.\" ) ; else if ( errno == EPERM && ! is_privileged ) die ( \"No<S2SV_blank>permissions<S2SV_blank>to<S2SV_blank>creating<S2SV_blank>new<S2SV_blank>namespace,<S2SV_blank>likely<S2SV_blank>because<S2SV_blank>the<S2SV_blank>kernel<S2SV_blank>does<S2SV_blank>not<S2SV_blank>allow<S2SV_blank>non-privileged<S2SV_blank>user<S2SV_blank>namespaces.<S2SV_blank>On<S2SV_blank>e.g.<S2SV_blank>debian<S2SV_blank>this<S2SV_blank>can<S2SV_blank>be<S2SV_blank>enabled<S2SV_blank>with<S2SV_blank>\\'sysctl<S2SV_blank>kernel.unprivileged_userns_clone=1\\'.\" ) ; } die_with_error ( \"Creating<S2SV_blank>new<S2SV_blank>namespace<S2SV_blank>failed\" ) ; } ns_uid = opt_sandbox_uid ; ns_gid = opt_sandbox_gid ; if ( pid != 0 ) { if ( is_privileged && opt_unshare_user && opt_userns_block_fd == - 1 ) { write_uid_gid_map ( ns_uid , real_uid , ns_gid , real_gid , pid , TRUE , opt_needs_devpts ) ; } drop_privs ( FALSE ) ; handle_die_with_parent ( ) ; if ( opt_info_fd != - 1 ) { cleanup_free char * output = xasprintf ( \"{\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\\\\"child-pid\\\\\":<S2SV_blank>%i\\\\n}\\\\n\" , pid ) ; dump_info ( opt_info_fd , output , TRUE ) ; close ( opt_info_fd ) ; } if ( opt_json_status_fd != - 1 ) { cleanup_free char * output = xasprintf ( \"{<S2SV_blank>\\\\\"child-pid\\\\\":<S2SV_blank>%i<S2SV_blank>}\\\\n\" , pid ) ; dump_info ( opt_json_status_fd , output , TRUE ) ; } if ( opt_userns_block_fd != - 1 ) { char b [ 1 ] ; ( void ) TEMP_FAILURE_RETRY ( read ( opt_userns_block_fd , b , 1 ) ) ; close ( opt_userns_block_fd ) ; } val = 1 ; res = write ( child_wait_fd , & val , 8 ) ; close ( child_wait_fd ) ; return monitor_child ( event_fd , pid , setup_finished_pipe [ 0 ] ) ; } if ( opt_info_fd != - 1 ) close ( opt_info_fd ) ; if ( opt_json_status_fd != - 1 ) close ( opt_json_status_fd ) ; res = read ( child_wait_fd , & val , 8 ) ; close ( child_wait_fd ) ; switch_to_user_with_privs ( ) ; if ( opt_unshare_net ) loopback_setup ( ) ; ns_uid = opt_sandbox_uid ; ns_gid = opt_sandbox_gid ; if ( ! is_privileged && opt_unshare_user && opt_userns_block_fd == - 1 ) { if ( opt_needs_devpts ) { ns_uid = 0 ; ns_gid = 0 ; } write_uid_gid_map ( ns_uid , real_uid , ns_gid , real_gid , - 1 , TRUE , FALSE ) ; } old_umask = umask ( 0 ) ; resolve_symlinks_in_ops ( ) ; if ( mount ( NULL , \"/\" , NULL , MS_SLAVE | MS_REC , NULL ) < 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>/<S2SV_blank>slave\" ) ; if ( mount ( \"tmpfs\" , base_path , \"tmpfs\" , MS_NODEV | MS_NOSUID , NULL ) != 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>tmpfs\" ) ; old_cwd = get_current_dir_name ( ) ; if ( chdir ( base_path ) != 0 ) die_with_error ( \"chdir<S2SV_blank>base_path\" ) ; if ( mkdir ( \"newroot\" , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>newroot<S2SV_blank>failed\" ) ; if ( mount ( \"newroot\" , \"newroot\" , NULL , MS_MGC_VAL | MS_BIND | MS_REC , NULL ) < 0 ) die_with_error ( \"setting<S2SV_blank>up<S2SV_blank>newroot<S2SV_blank>bind\" ) ; if ( mkdir ( \"oldroot\" , 0755 ) ) die_with_error ( \"Creating<S2SV_blank>oldroot<S2SV_blank>failed\" ) ; if ( pivot_root ( base_path , \"oldroot\" ) ) die_with_error ( \"pivot_root\" ) ; if ( chdir ( \"/\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/<S2SV_blank>(base<S2SV_blank>path)\" ) ; if ( is_privileged ) { pid_t child ; int privsep_sockets [ 2 ] ; if ( socketpair ( AF_UNIX , SOCK_SEQPACKET | SOCK_CLOEXEC , 0 , privsep_sockets ) != 0 ) die_with_error ( \"Can\\'t<S2SV_blank>create<S2SV_blank>privsep<S2SV_blank>socket\" ) ; child = fork ( ) ; if ( child == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>fork<S2SV_blank>unprivileged<S2SV_blank>helper\" ) ; if ( child == 0 ) { drop_privs ( FALSE ) ; close ( privsep_sockets [ 0 ] ) ; setup_newroot ( opt_unshare_pid , privsep_sockets [ 1 ] ) ; exit ( 0 ) ; } else { int status ; uint32_t buffer [ 2048 ] ; uint32_t op , flags ; const char * arg1 , * arg2 ; cleanup_fd int unpriv_socket = - 1 ; unpriv_socket = privsep_sockets [ 0 ] ; close ( privsep_sockets [ 1 ] ) ; do { op = read_priv_sec_op ( unpriv_socket , buffer , sizeof ( buffer ) , & flags , & arg1 , & arg2 ) ; privileged_op ( - 1 , op , flags , arg1 , arg2 ) ; if ( write ( unpriv_socket , buffer , 1 ) != 1 ) die ( \"Can\\'t<S2SV_blank>write<S2SV_blank>to<S2SV_blank>op_socket\" ) ; } while ( op != PRIV_SEP_OP_DONE ) ; waitpid ( child , & status , 0 ) ; } } else { setup_newroot ( opt_unshare_pid , - 1 ) ; } close_ops_fd ( ) ; if ( mount ( \"oldroot\" , \"oldroot\" , NULL , MS_REC | MS_PRIVATE , NULL ) != 0 ) die_with_error ( \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>old<S2SV_blank>root<S2SV_blank>rprivate\" ) ; if ( umount2 ( \"oldroot\" , MNT_DETACH ) ) die_with_error ( \"unmount<S2SV_blank>old<S2SV_blank>root\" ) ; { cleanup_fd int oldrootfd = open ( \"/\" , O_DIRECTORY | O_RDONLY ) ; if ( oldrootfd < 0 ) die_with_error ( \"can\\'t<S2SV_blank>open<S2SV_blank>/\" ) ; if ( chdir ( \"/newroot\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/newroot\" ) ; if ( pivot_root ( \".\" , \".\" ) != 0 ) die_with_error ( \"pivot_root(/newroot)\" ) ; if ( fchdir ( oldrootfd ) < 0 ) die_with_error ( \"fchdir<S2SV_blank>to<S2SV_blank>oldroot\" ) ; if ( umount2 ( \".\" , MNT_DETACH ) < 0 ) die_with_error ( \"umount<S2SV_blank>old<S2SV_blank>root\" ) ; if ( chdir ( \"/\" ) != 0 ) die_with_error ( \"chdir<S2SV_blank>/\" ) ; } if ( opt_unshare_user && ( ns_uid != opt_sandbox_uid || ns_gid != opt_sandbox_gid ) && opt_userns_block_fd == - 1 ) { if ( unshare ( CLONE_NEWUSER ) ) die_with_error ( \"unshare<S2SV_blank>user<S2SV_blank>ns\" ) ; write_uid_gid_map ( opt_sandbox_uid , ns_uid , opt_sandbox_gid , ns_gid , - 1 , FALSE , FALSE ) ; } drop_privs ( ! is_privileged ) ; if ( opt_block_fd != - 1 ) { char b [ 1 ] ; ( void ) TEMP_FAILURE_RETRY ( read ( opt_block_fd , b , 1 ) ) ; close ( opt_block_fd ) ; } if ( opt_seccomp_fd != - 1 ) { seccomp_data = load_file_data ( opt_seccomp_fd , & seccomp_len ) ; if ( seccomp_data == NULL ) die_with_error ( \"Can\\'t<S2SV_blank>read<S2SV_blank>seccomp<S2SV_blank>data\" ) ; if ( seccomp_len % 8 != 0 ) die ( \"Invalid<S2SV_blank>seccomp<S2SV_blank>data,<S2SV_blank>must<S2SV_blank>be<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>8\" ) ; seccomp_prog . len = seccomp_len / 8 ; seccomp_prog . filter = ( struct sock_filter * ) seccomp_data ; close ( opt_seccomp_fd ) ; } umask ( old_umask ) ; new_cwd = \"/\" ; if ( opt_chdir_path ) { if ( chdir ( opt_chdir_path ) ) die_with_error ( \"Can\\'t<S2SV_blank>chdir<S2SV_blank>to<S2SV_blank>%s\" , opt_chdir_path ) ; new_cwd = opt_chdir_path ; } else if ( chdir ( old_cwd ) == 0 ) { new_cwd = old_cwd ; } else { const char * home = getenv ( \"HOME\" ) ; if ( home != NULL && chdir ( home ) == 0 ) new_cwd = home ; } xsetenv ( \"PWD\" , new_cwd , 1 ) ; free ( old_cwd ) ; if ( opt_new_session && setsid ( ) == ( pid_t ) - 1 ) die_with_error ( \"setsid\" ) ; if ( label_exec ( opt_exec_label ) == - 1 ) die_with_error ( \"label_exec<S2SV_blank>%s\" , argv [ 0 ] ) ; __debug__ ( ( \"forking<S2SV_blank>for<S2SV_blank>child\\\\n\" ) ) ; if ( ! opt_as_pid_1 && ( opt_unshare_pid || lock_files != NULL || opt_sync_fd != - 1 ) ) { pid = fork ( ) ; if ( pid == - 1 ) die_with_error ( \"Can\\'t<S2SV_blank>fork<S2SV_blank>for<S2SV_blank>pid<S2SV_blank>1\" ) ; if ( pid != 0 ) { drop_all_caps ( FALSE ) ; { int dont_close [ 3 ] ; int j = 0 ; if ( event_fd != - 1 ) dont_close [ j ++ ] = event_fd ; if ( opt_sync_fd != - 1 ) dont_close [ j ++ ] = opt_sync_fd ; dont_close [ j ++ ] = - 1 ; fdwalk ( proc_fd , close_extra_fds , dont_close ) ; } return do_init ( event_fd , pid , seccomp_data != NULL ? & seccomp_prog : NULL ) ; } } __debug__ ( ( \"launch<S2SV_blank>executable<S2SV_blank>%s\\\\n\" , argv [ 0 ] ) ) ; if ( proc_fd != - 1 ) close ( proc_fd ) ; if ( ! opt_as_pid_1 ) { if ( opt_sync_fd != - 1 ) close ( opt_sync_fd ) ; } unblock_sigchild ( ) ; handle_die_with_parent ( ) ; if ( ! is_privileged ) set_ambient_capabilities ( ) ; if ( seccomp_data != NULL && prctl ( PR_SET_SECCOMP , SECCOMP_MODE_FILTER , & seccomp_prog ) != 0 ) die_with_error ( \"prctl(PR_SET_SECCOMP)\" ) ; if ( setup_finished_pipe [ 1 ] != - 1 ) { char data = 0 ; res = write_to_fd ( setup_finished_pipe [ 1 ] , & data , 1 ) ; } if ( execvp ( argv [ 0 ] , argv ) == - 1 ) { if ( setup_finished_pipe [ 1 ] != - 1 ) { int saved_errno = errno ; char data = 0 ; res = write_to_fd ( setup_finished_pipe [ 1 ] , & data , 1 ) ; errno = saved_errno ; } die_with_error ( \"execvp<S2SV_blank>%s\" , argv [ 0 ] ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mode_t old_umask ; const <S2SV_ModEnd> char * base_path <S2SV_ModStart> ; base_path = \"/tmp\" ; <S2SV_ModEnd> __debug__ ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0376\n\n```\nCWE-617 static int connection_edge_process_relay_cell ( cell_t * cell , circuit_t * circ , edge_connection_t * conn , crypt_path_t * layer_hint ) { static int num_seen = 0 ; relay_header_t rh ; unsigned domain = layer_hint ? LD_APP : LD_EXIT ; int reason ; int optimistic_data = 0 ; tor_assert ( cell ) ; tor_assert ( circ ) ; relay_header_unpack ( & rh , cell -> payload ) ; num_seen ++ ; log_debug ( domain , \"Now<S2SV_blank>seen<S2SV_blank>%d<S2SV_blank>relay<S2SV_blank>cells<S2SV_blank>here<S2SV_blank>(command<S2SV_blank>%d,<S2SV_blank>stream<S2SV_blank>%d).\" , num_seen , rh . command , rh . stream_id ) ; if ( rh . length > RELAY_PAYLOAD_SIZE ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Relay<S2SV_blank>cell<S2SV_blank>length<S2SV_blank>field<S2SV_blank>too<S2SV_blank>long.<S2SV_blank>Closing<S2SV_blank>circuit.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } if ( rh . stream_id == 0 ) { switch ( rh . command ) { case RELAY_COMMAND_BEGIN : case RELAY_COMMAND_CONNECTED : case RELAY_COMMAND_DATA : case RELAY_COMMAND_END : case RELAY_COMMAND_RESOLVE : case RELAY_COMMAND_RESOLVED : case RELAY_COMMAND_BEGIN_DIR : log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Relay<S2SV_blank>command<S2SV_blank>%d<S2SV_blank>with<S2SV_blank>zero<S2SV_blank>\" \"stream_id.<S2SV_blank>Dropping.\" , ( int ) rh . command ) ; return 0 ; default : ; } } if ( conn && ! connection_state_is_open ( TO_CONN ( conn ) ) ) { if ( conn -> base_ . type == CONN_TYPE_EXIT && ( conn -> base_ . state == EXIT_CONN_STATE_CONNECTING || conn -> base_ . state == EXIT_CONN_STATE_RESOLVING ) && rh . command == RELAY_COMMAND_DATA ) { optimistic_data = 1 ; } else { return connection_edge_process_relay_cell_not_open ( & rh , cell , circ , conn , layer_hint ) ; } } switch ( rh . command ) { case RELAY_COMMAND_DROP : return 0 ; case RELAY_COMMAND_BEGIN : case RELAY_COMMAND_BEGIN_DIR : if ( layer_hint && circ -> purpose != CIRCUIT_PURPOSE_S_REND_JOINED ) { log_fn ( LOG_PROTOCOL_WARN , LD_APP , \"Relay<S2SV_blank>begin<S2SV_blank>request<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>AP.<S2SV_blank>Dropping.\" ) ; return 0 ; } if ( circ -> purpose == CIRCUIT_PURPOSE_S_REND_JOINED && layer_hint != TO_ORIGIN_CIRCUIT ( circ ) -> cpath -> prev ) { log_fn ( LOG_PROTOCOL_WARN , LD_APP , \"Relay<S2SV_blank>begin<S2SV_blank>request<S2SV_blank>to<S2SV_blank>Hidden<S2SV_blank>Service<S2SV_blank>\" \"from<S2SV_blank>intermediary<S2SV_blank>node.<S2SV_blank>Dropping.\" ) ; return 0 ; } if ( conn ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"Begin<S2SV_blank>cell<S2SV_blank>for<S2SV_blank>known<S2SV_blank>stream.<S2SV_blank>Dropping.\" ) ; return 0 ; } <S2SV_StartBug> if ( rh . command == RELAY_COMMAND_BEGIN_DIR ) { <S2SV_EndBug> static uint64_t next_id = 0 ; circ -> dirreq_id = ++ next_id ; TO_OR_CIRCUIT ( circ ) -> p_chan -> dirreq_id = circ -> dirreq_id ; } return connection_exit_begin_conn ( cell , circ ) ; case RELAY_COMMAND_DATA : ++ stats_n_data_cells_received ; if ( ( layer_hint && -- layer_hint -> deliver_window < 0 ) || ( ! layer_hint && -- circ -> deliver_window < 0 ) ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"(relay<S2SV_blank>data)<S2SV_blank>circ<S2SV_blank>deliver_window<S2SV_blank>below<S2SV_blank>0.<S2SV_blank>Killing.\" ) ; if ( conn ) { connection_edge_end ( conn , END_STREAM_REASON_TORPROTOCOL ) ; connection_mark_for_close ( TO_CONN ( conn ) ) ; } return - END_CIRC_REASON_TORPROTOCOL ; } log_debug ( domain , \"circ<S2SV_blank>deliver_window<S2SV_blank>now<S2SV_blank>%d.\" , layer_hint ? layer_hint -> deliver_window : circ -> deliver_window ) ; circuit_consider_sending_sendme ( circ , layer_hint ) ; if ( ! conn ) { log_info ( domain , \"data<S2SV_blank>cell<S2SV_blank>dropped,<S2SV_blank>unknown<S2SV_blank>stream<S2SV_blank>(streamid<S2SV_blank>%d).\" , rh . stream_id ) ; return 0 ; } if ( -- conn -> deliver_window < 0 ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"(relay<S2SV_blank>data)<S2SV_blank>conn<S2SV_blank>deliver_window<S2SV_blank>below<S2SV_blank>0.<S2SV_blank>Killing.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } stats_n_data_bytes_received += rh . length ; connection_write_to_buf ( ( char * ) ( cell -> payload + RELAY_HEADER_SIZE ) , rh . length , TO_CONN ( conn ) ) ; if ( ! optimistic_data ) { connection_edge_consider_sending_sendme ( conn ) ; } return 0 ; case RELAY_COMMAND_END : reason = rh . length > 0 ? get_uint8 ( cell -> payload + RELAY_HEADER_SIZE ) : END_STREAM_REASON_MISC ; if ( ! conn ) { log_info ( domain , \"end<S2SV_blank>cell<S2SV_blank>(%s)<S2SV_blank>dropped,<S2SV_blank>unknown<S2SV_blank>stream.\" , stream_end_reason_to_string ( reason ) ) ; return 0 ; } log_info ( domain , TOR_SOCKET_T_FORMAT \":<S2SV_blank>end<S2SV_blank>cell<S2SV_blank>(%s)<S2SV_blank>for<S2SV_blank>stream<S2SV_blank>%d.<S2SV_blank>\" \"Removing<S2SV_blank>stream.\" , conn -> base_ . s , stream_end_reason_to_string ( reason ) , conn -> stream_id ) ; if ( conn -> base_ . type == CONN_TYPE_AP ) { entry_connection_t * entry_conn = EDGE_TO_ENTRY_CONN ( conn ) ; if ( entry_conn -> socks_request && ! entry_conn -> socks_request -> has_finished ) log_warn ( LD_BUG , \"open<S2SV_blank>stream<S2SV_blank>hasn\\'t<S2SV_blank>sent<S2SV_blank>socks<S2SV_blank>answer<S2SV_blank>yet?<S2SV_blank>Closing.\" ) ; } conn -> edge_has_sent_end = 1 ; if ( ! conn -> end_reason ) conn -> end_reason = reason | END_STREAM_REASON_FLAG_REMOTE ; if ( ! conn -> base_ . marked_for_close ) { connection_mark_and_flush ( TO_CONN ( conn ) ) ; } return 0 ; case RELAY_COMMAND_EXTEND : case RELAY_COMMAND_EXTEND2 : { static uint64_t total_n_extend = 0 , total_nonearly = 0 ; total_n_extend ++ ; if ( rh . stream_id ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"\\'extend\\'<S2SV_blank>cell<S2SV_blank>received<S2SV_blank>for<S2SV_blank>non-zero<S2SV_blank>stream.<S2SV_blank>Dropping.\" ) ; return 0 ; } if ( cell -> command != CELL_RELAY_EARLY && ! networkstatus_get_param ( NULL , \"AllowNonearlyExtend\" , 0 , 0 , 1 ) ) { # define EARLY_WARNING_INTERVAL 3600 static ratelim_t early_warning_limit = RATELIM_INIT ( EARLY_WARNING_INTERVAL ) ; char * m ; if ( cell -> command == CELL_RELAY ) { ++ total_nonearly ; if ( ( m = rate_limit_log ( & early_warning_limit , approx_time ( ) ) ) ) { double percentage = ( ( double ) total_nonearly ) / total_n_extend ; percentage *= 100 ; log_fn ( LOG_PROTOCOL_WARN , domain , \"EXTEND<S2SV_blank>cell<S2SV_blank>received,<S2SV_blank>\" \"but<S2SV_blank>not<S2SV_blank>via<S2SV_blank>RELAY_EARLY.<S2SV_blank>Dropping.%s\" , m ) ; log_fn ( LOG_PROTOCOL_WARN , domain , \"<S2SV_blank><S2SV_blank>(We<S2SV_blank>have<S2SV_blank>dropped<S2SV_blank>%.02f%%<S2SV_blank>of<S2SV_blank>\" \"all<S2SV_blank>EXTEND<S2SV_blank>cells<S2SV_blank>for<S2SV_blank>this<S2SV_blank>reason)\" , percentage ) ; tor_free ( m ) ; } } else { log_fn ( LOG_WARN , domain , \"EXTEND<S2SV_blank>cell<S2SV_blank>received,<S2SV_blank>in<S2SV_blank>a<S2SV_blank>cell<S2SV_blank>with<S2SV_blank>type<S2SV_blank>%d!<S2SV_blank>Dropping.\" , cell -> command ) ; } return 0 ; } return circuit_extend ( cell , circ ) ; } case RELAY_COMMAND_EXTENDED : case RELAY_COMMAND_EXTENDED2 : if ( ! layer_hint ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"\\'extended\\'<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>non-origin.<S2SV_blank>Dropping.\" ) ; return 0 ; } log_debug ( domain , \"Got<S2SV_blank>an<S2SV_blank>extended<S2SV_blank>cell!<S2SV_blank>Yay.\" ) ; { extended_cell_t extended_cell ; if ( extended_cell_parse ( & extended_cell , rh . command , ( const uint8_t * ) cell -> payload + RELAY_HEADER_SIZE , rh . length ) < 0 ) { log_warn ( LD_PROTOCOL , \"Can\\'t<S2SV_blank>parse<S2SV_blank>EXTENDED<S2SV_blank>cell;<S2SV_blank>killing<S2SV_blank>circuit.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } if ( ( reason = circuit_finish_handshake ( TO_ORIGIN_CIRCUIT ( circ ) , & extended_cell . created_cell ) ) < 0 ) { log_warn ( domain , \"circuit_finish_handshake<S2SV_blank>failed.\" ) ; return reason ; } } if ( ( reason = circuit_send_next_onion_skin ( TO_ORIGIN_CIRCUIT ( circ ) ) ) < 0 ) { log_info ( domain , \"circuit_send_next_onion_skin()<S2SV_blank>failed.\" ) ; return reason ; } return 0 ; case RELAY_COMMAND_TRUNCATE : if ( layer_hint ) { log_fn ( LOG_PROTOCOL_WARN , LD_APP , \"\\'truncate\\'<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>origin.<S2SV_blank>Dropping.\" ) ; return 0 ; } if ( circ -> n_hop ) { if ( circ -> n_chan ) log_warn ( LD_BUG , \"n_chan<S2SV_blank>and<S2SV_blank>n_hop<S2SV_blank>set<S2SV_blank>on<S2SV_blank>the<S2SV_blank>same<S2SV_blank>circuit!\" ) ; extend_info_free ( circ -> n_hop ) ; circ -> n_hop = NULL ; tor_free ( circ -> n_chan_create_cell ) ; circuit_set_state ( circ , CIRCUIT_STATE_OPEN ) ; } if ( circ -> n_chan ) { uint8_t trunc_reason = get_uint8 ( cell -> payload + RELAY_HEADER_SIZE ) ; circuit_clear_cell_queue ( circ , circ -> n_chan ) ; channel_send_destroy ( circ -> n_circ_id , circ -> n_chan , trunc_reason ) ; circuit_set_n_circid_chan ( circ , 0 , NULL ) ; } log_debug ( LD_EXIT , \"Processed<S2SV_blank>\\'truncate\\',<S2SV_blank>replying.\" ) ; { char payload [ 1 ] ; payload [ 0 ] = ( char ) END_CIRC_REASON_REQUESTED ; relay_send_command_from_edge ( 0 , circ , RELAY_COMMAND_TRUNCATED , payload , sizeof ( payload ) , NULL ) ; } return 0 ; case RELAY_COMMAND_TRUNCATED : if ( ! layer_hint ) { log_fn ( LOG_PROTOCOL_WARN , LD_EXIT , \"\\'truncated\\'<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>non-origin.<S2SV_blank>Dropping.\" ) ; return 0 ; } circuit_truncated ( TO_ORIGIN_CIRCUIT ( circ ) , layer_hint , get_uint8 ( cell -> payload + RELAY_HEADER_SIZE ) ) ; return 0 ; case RELAY_COMMAND_CONNECTED : if ( conn ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"\\'connected\\'<S2SV_blank>unsupported<S2SV_blank>while<S2SV_blank>open.<S2SV_blank>Closing<S2SV_blank>circ.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } log_info ( domain , \"\\'connected\\'<S2SV_blank>received,<S2SV_blank>no<S2SV_blank>conn<S2SV_blank>attached<S2SV_blank>anymore.<S2SV_blank>Ignoring.\" ) ; return 0 ; case RELAY_COMMAND_SENDME : if ( ! rh . stream_id ) { if ( layer_hint ) { if ( layer_hint -> package_window + CIRCWINDOW_INCREMENT > CIRCWINDOW_START_MAX ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Unexpected<S2SV_blank>sendme<S2SV_blank>cell<S2SV_blank>from<S2SV_blank>exit<S2SV_blank>relay.<S2SV_blank>\" \"Closing<S2SV_blank>circ.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } layer_hint -> package_window += CIRCWINDOW_INCREMENT ; log_debug ( LD_APP , \"circ-level<S2SV_blank>sendme<S2SV_blank>at<S2SV_blank>origin,<S2SV_blank>packagewindow<S2SV_blank>%d.\" , layer_hint -> package_window ) ; circuit_resume_edge_reading ( circ , layer_hint ) ; } else { if ( circ -> package_window + CIRCWINDOW_INCREMENT > CIRCWINDOW_START_MAX ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Unexpected<S2SV_blank>sendme<S2SV_blank>cell<S2SV_blank>from<S2SV_blank>client.<S2SV_blank>\" \"Closing<S2SV_blank>circ<S2SV_blank>(window<S2SV_blank>%d).\" , circ -> package_window ) ; return - END_CIRC_REASON_TORPROTOCOL ; } circ -> package_window += CIRCWINDOW_INCREMENT ; log_debug ( LD_APP , \"circ-level<S2SV_blank>sendme<S2SV_blank>at<S2SV_blank>non-origin,<S2SV_blank>packagewindow<S2SV_blank>%d.\" , circ -> package_window ) ; circuit_resume_edge_reading ( circ , layer_hint ) ; } return 0 ; } if ( ! conn ) { log_info ( domain , \"sendme<S2SV_blank>cell<S2SV_blank>dropped,<S2SV_blank>unknown<S2SV_blank>stream<S2SV_blank>(streamid<S2SV_blank>%d).\" , rh . stream_id ) ; return 0 ; } conn -> package_window += STREAMWINDOW_INCREMENT ; log_debug ( domain , \"stream-level<S2SV_blank>sendme,<S2SV_blank>packagewindow<S2SV_blank>now<S2SV_blank>%d.\" , conn -> package_window ) ; if ( circuit_queue_streams_are_blocked ( circ ) ) { return 0 ; } connection_start_reading ( TO_CONN ( conn ) ) ; if ( connection_edge_package_raw_inbuf ( conn , 1 , NULL ) < 0 ) { connection_mark_for_close ( TO_CONN ( conn ) ) ; return 0 ; } return 0 ; case RELAY_COMMAND_RESOLVE : if ( layer_hint ) { log_fn ( LOG_PROTOCOL_WARN , LD_APP , \"resolve<S2SV_blank>request<S2SV_blank>unsupported<S2SV_blank>at<S2SV_blank>AP;<S2SV_blank>dropping.\" ) ; return 0 ; } else if ( conn ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"resolve<S2SV_blank>request<S2SV_blank>for<S2SV_blank>known<S2SV_blank>stream;<S2SV_blank>dropping.\" ) ; return 0 ; } else if ( circ -> purpose != CIRCUIT_PURPOSE_OR ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"resolve<S2SV_blank>request<S2SV_blank>on<S2SV_blank>circ<S2SV_blank>with<S2SV_blank>purpose<S2SV_blank>%d;<S2SV_blank>dropping\" , circ -> purpose ) ; return 0 ; } connection_exit_begin_resolve ( cell , TO_OR_CIRCUIT ( circ ) ) ; return 0 ; case RELAY_COMMAND_RESOLVED : if ( conn ) { log_fn ( LOG_PROTOCOL_WARN , domain , \"\\'resolved\\'<S2SV_blank>unsupported<S2SV_blank>while<S2SV_blank>open.<S2SV_blank>Closing<S2SV_blank>circ.\" ) ; return - END_CIRC_REASON_TORPROTOCOL ; } log_info ( domain , \"\\'resolved\\'<S2SV_blank>received,<S2SV_blank>no<S2SV_blank>conn<S2SV_blank>attached<S2SV_blank>anymore.<S2SV_blank>Ignoring.\" ) ; return 0 ; case RELAY_COMMAND_ESTABLISH_INTRO : case RELAY_COMMAND_ESTABLISH_RENDEZVOUS : case RELAY_COMMAND_INTRODUCE1 : case RELAY_COMMAND_INTRODUCE2 : case RELAY_COMMAND_INTRODUCE_ACK : case RELAY_COMMAND_RENDEZVOUS1 : case RELAY_COMMAND_RENDEZVOUS2 : case RELAY_COMMAND_INTRO_ESTABLISHED : case RELAY_COMMAND_RENDEZVOUS_ESTABLISHED : rend_process_relay_cell ( circ , layer_hint , rh . command , rh . length , cell -> payload + RELAY_HEADER_SIZE ) ; return 0 ; } log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Received<S2SV_blank>unknown<S2SV_blank>relay<S2SV_blank>command<S2SV_blank>%d.<S2SV_blank>Perhaps<S2SV_blank>the<S2SV_blank>other<S2SV_blank>side<S2SV_blank>is<S2SV_blank>using<S2SV_blank>\" \"a<S2SV_blank>newer<S2SV_blank>version<S2SV_blank>of<S2SV_blank>Tor?<S2SV_blank>Dropping.\" , rh . command ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> command == RELAY_COMMAND_BEGIN_DIR && circ -> purpose != CIRCUIT_PURPOSE_S_REND_JOINED\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14057\n\n```\nCWE-834 static int asf_read_marker ( AVFormatContext * s , int64_t size ) { AVIOContext * pb = s -> pb ; ASFContext * asf = s -> priv_data ; int i , count , name_len , ret ; char name [ 1024 ] ; avio_rl64 ( pb ) ; avio_rl64 ( pb ) ; count = avio_rl32 ( pb ) ; avio_rl16 ( pb ) ; name_len = avio_rl16 ( pb ) ; <S2SV_StartBug> for ( i = 0 ; i < name_len ; i ++ ) <S2SV_EndBug> avio_r8 ( pb ) ; for ( i = 0 ; i < count ; i ++ ) { int64_t pres_time ; <S2SV_StartBug> int name_len ; <S2SV_EndBug> avio_rl64 ( pb ) ; pres_time = avio_rl64 ( pb ) ; pres_time -= asf -> hdr . preroll * 10000 ; avio_rl16 ( pb ) ; avio_rl32 ( pb ) ; avio_rl32 ( pb ) ; name_len = avio_rl32 ( pb ) ; if ( ( ret = avio_get_str16le ( pb , name_len * 2 , name , sizeof ( name ) ) ) < name_len ) avio_skip ( pb , name_len - ret ) ; avpriv_new_chapter ( s , i , ( AVRational ) { 1 , 10000000 } , pres_time , AV_NOPTS_VALUE , name ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pb ) ; avio_skip ( pb , name_len <S2SV_ModEnd> ) ; for <S2SV_ModStart> ; int name_len ; if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_convert_unwritten_extents_endio ( handle_t * handle , struct inode * inode , <S2SV_StartBug> struct ext4_ext_path * path ) <S2SV_EndBug> { <S2SV_StartBug> struct ext4_extent * ex ; <S2SV_EndBug> int depth ; int err = 0 ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; <S2SV_StartBug> ext_debug ( \"ext4_convert_unwritten_extents_endio:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical\" <S2SV_EndBug> \"block<S2SV_blank>%llu,<S2SV_blank>max_blocks<S2SV_blank>%u\\\\n\" , inode -> i_ino , <S2SV_StartBug> ( unsigned long long ) le32_to_cpu ( ex -> ee_block ) , <S2SV_EndBug> ext4_ext_get_actual_len ( ex ) ) ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto out ; ext4_ext_mark_initialized ( ex ) ; ext4_ext_try_to_merge ( handle , inode , path , ex ) ; err = ext4_ext_dirty ( handle , inode , path + path -> p_depth ) ; out : ext4_ext_show_leaf ( inode , path ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode , struct ext4_map_blocks * map , struct <S2SV_ModStart> ext4_extent * ex ; ext4_lblk_t ee_block ; unsigned int ee_len <S2SV_ModStart> . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; <S2SV_ModStart> long long ) ee_block , ee_len ) ; if ( ee_block != map -> m_lblk || ee_len > map -> m_len ) { err = ext4_split_unwritten_extents ( handle , inode , map , path , EXT4_GET_BLOCKS_CONVERT ) ; if ( err < 0 ) goto out ; ext4_ext_drop_refs ( path ) ; path = ext4_ext_find_extent ( inode , map -> m_lblk , path ) ; if ( IS_ERR ( path ) ) { err = PTR_ERR ( path ) ; goto out ; } depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; } <S2SV_ModEnd> err = ext4_ext_get_access\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10129\n\n```\nCWE-476 int git_pkt_parse_line ( git_pkt * * head , const char * line , const char * * out , size_t bufflen ) { int ret ; int32_t len ; if ( bufflen > 0 && bufflen < PKT_LEN_SIZE ) return GIT_EBUFS ; len = parse_len ( line ) ; if ( len < 0 ) { if ( bufflen >= 4 && ! git__prefixcmp ( line , \"PACK\" ) ) { giterr_clear ( ) ; * out = line ; return pack_pkt ( head ) ; } return ( int ) len ; } if ( bufflen > 0 && bufflen < ( size_t ) len ) return GIT_EBUFS ; if ( len != 0 && len < PKT_LEN_SIZE ) return GIT_ERROR ; line += PKT_LEN_SIZE ; if ( len == PKT_LEN_SIZE ) { <S2SV_StartBug> * head = NULL ; <S2SV_EndBug> * out = line ; return 0 ; } if ( len == 0 ) { * out = line ; return flush_pkt ( head ) ; } len -= PKT_LEN_SIZE ; if ( * line == GIT_SIDE_BAND_DATA ) ret = data_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_PROGRESS ) ret = sideband_progress_pkt ( head , line , len ) ; else if ( * line == GIT_SIDE_BAND_ERROR ) ret = sideband_error_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ACK\" ) ) ret = ack_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"NAK\" ) ) ret = nak_pkt ( head ) ; else if ( ! git__prefixcmp ( line , \"ERR<S2SV_blank>\" ) ) ret = err_pkt ( head , line , len ) ; else if ( * line == '#' ) ret = comment_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ok\" ) ) ret = ok_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"ng\" ) ) ret = ng_pkt ( head , line , len ) ; else if ( ! git__prefixcmp ( line , \"unpack\" ) ) ret = unpack_pkt ( head , line , len ) ; else ret = ref_pkt ( head , line , len ) ; * out = line + len ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PKT_LEN_SIZE ) { giterr_set_str ( GITERR_NET , \"Invalid<S2SV_blank>empty<S2SV_blank>packet\" ) ; return GIT_ERROR <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5224\n\n```\nCWE-264 <S2SV_StartBug> int xmkstemp ( char * * tmpname , char * dir ) <S2SV_EndBug> { char * localtmp ; <S2SV_StartBug> char * tmpenv ; <S2SV_EndBug> mode_t old_mode ; int fd , rc ; <S2SV_StartBug> if ( dir != NULL ) <S2SV_EndBug> <S2SV_StartBug> tmpenv = dir ; <S2SV_EndBug> else tmpenv = getenv ( \"TMPDIR\" ) ; <S2SV_StartBug> if ( tmpenv ) <S2SV_EndBug> rc = asprintf ( & localtmp , \"%s/%s.XXXXXX\" , tmpenv , <S2SV_StartBug> program_invocation_short_name ) ; <S2SV_EndBug> else rc = asprintf ( & localtmp , \"%s/%s.XXXXXX\" , _PATH_TMP , program_invocation_short_name ) ; if ( rc < 0 ) return - 1 ; old_mode = umask ( 077 ) ; fd = mkostemp ( localtmp , O_RDWR | O_CREAT | O_EXCL | O_CLOEXEC ) ; umask ( old_mode ) ; if ( fd == - 1 ) { free ( localtmp ) ; localtmp = NULL ; } * tmpname = localtmp ; return fd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tmpname , const <S2SV_ModStart> char * dir , const char * prefix <S2SV_ModStart> * localtmp ; const <S2SV_ModStart> , rc ; <S2SV_ModEnd> tmpenv = dir <S2SV_ModStart> tmpenv = dir ? dir : <S2SV_ModEnd> getenv ( \"TMPDIR\" <S2SV_ModStart> ; if ( ! tmpenv ) tmpenv = _PATH_TMP ; <S2SV_ModEnd> rc = asprintf <S2SV_ModStart> , tmpenv , prefix <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 void dhcpClientProcessMessage ( NetInterface * interface , const IpPseudoHeader * pseudoHeader , const UdpHeader * udpHeader , const NetBuffer * buffer , size_t offset , const NetRxAncillary * ancillary , void * param ) { size_t length ; DhcpClientContext * context ; DhcpMessage * message ; DhcpOption * option ; context = ( DhcpClientContext * ) param ; length = netBufferGetLength ( buffer ) - offset ; <S2SV_StartBug> if ( length < sizeof ( DhcpMessage ) ) <S2SV_EndBug> return ; if ( length > DHCP_MAX_MSG_SIZE ) return ; message = netBufferAt ( buffer , offset ) ; if ( message == NULL ) return ; TRACE_DEBUG ( \"\\\\r\\\\n%s:<S2SV_blank>DHCP<S2SV_blank>message<S2SV_blank>received<S2SV_blank>(%\" PRIuSIZE \"<S2SV_blank>bytes)...\\\\r\\\\n\" , formatSystemTime ( osGetSystemTime ( ) , NULL ) , length ) ; dhcpDumpMessage ( message , length ) ; if ( message -> op != DHCP_OPCODE_BOOTREPLY ) return ; if ( message -> htype != DHCP_HARDWARE_TYPE_ETH ) return ; if ( message -> hlen != sizeof ( MacAddr ) ) return ; if ( message -> magicCookie != HTONL ( DHCP_MAGIC_COOKIE ) ) return ; option = dhcpGetOption ( message , length , DHCP_OPT_DHCP_MESSAGE_TYPE ) ; if ( option == NULL || option -> length != 1 ) return ; switch ( option -> value [ 0 ] ) { case DHCP_MESSAGE_TYPE_OFFER : dhcpClientParseOffer ( context , message , length ) ; break ; case DHCP_MESSAGE_TYPE_ACK : dhcpClientParseAck ( context , message , length ) ; break ; case DHCP_MESSAGE_TYPE_NAK : dhcpClientParseNak ( context , message , length ) ; break ; default : break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( DhcpMessage ) || <S2SV_ModEnd> length > DHCP_MAX_MSG_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 static void process_blob ( struct rev_info * revs , struct blob * blob , show_object_fn show , struct strbuf * path , const char * name , void * cb_data ) { struct object * obj = & blob -> object ; <S2SV_StartBug> if ( ! revs -> blob_objects ) <S2SV_EndBug> return ; if ( ! obj ) die ( \"bad<S2SV_blank>blob<S2SV_blank>object\" ) ; if ( obj -> flags & ( UNINTERESTING | SEEN ) ) return ; obj -> flags |= SEEN ; <S2SV_StartBug> show ( obj , path , name , cb_data ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> object ; size_t pathlen ; <S2SV_ModStart> |= SEEN ; pathlen = path -> len ; strbuf_addstr ( path , name ) ; <S2SV_ModStart> obj , path -> buf <S2SV_ModEnd> , cb_data ) <S2SV_ModStart> cb_data ) ; strbuf_setlen ( path , pathlen ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0530\n\n```\nCWE-119 int mainloop ( CLIENT * client ) { struct nbd_request request ; struct nbd_reply reply ; gboolean go_on = TRUE ; # ifdef DODBG int i = 0 ; # endif negotiate ( client -> net , client , NULL ) ; DEBUG ( \"Entering<S2SV_blank>request<S2SV_blank>loop!\\\\n\" ) ; reply . magic = htonl ( NBD_REPLY_MAGIC ) ; reply . error = 0 ; while ( go_on ) { char buf [ BUFSIZE ] ; size_t len ; # ifdef DODBG i ++ ; printf ( \"%d:<S2SV_blank>\" , i ) ; # endif readit ( client -> net , & request , sizeof ( request ) ) ; request . from = ntohll ( request . from ) ; request . type = ntohl ( request . type ) ; if ( request . type == NBD_CMD_DISC ) { msg2 ( LOG_INFO , \"Disconnect<S2SV_blank>request<S2SV_blank>received.\" ) ; if ( client -> server -> flags & F_COPYONWRITE ) { if ( client -> difmap ) g_free ( client -> difmap ) ; close ( client -> difffile ) ; unlink ( client -> difffilename ) ; free ( client -> difffilename ) ; } go_on = FALSE ; continue ; } len = ntohl ( request . len ) ; if ( request . magic != htonl ( NBD_REQUEST_MAGIC ) ) err ( \"Not<S2SV_blank>enough<S2SV_blank>magic.\" ) ; <S2SV_StartBug> if ( len > BUFSIZE + sizeof ( struct nbd_reply ) ) <S2SV_EndBug> err ( \"Request<S2SV_blank>too<S2SV_blank>big!\" ) ; # ifdef DODBG printf ( \"%s<S2SV_blank>from<S2SV_blank>%llu<S2SV_blank>(%llu)<S2SV_blank>len<S2SV_blank>%d,<S2SV_blank>\" , request . type ? \"WRITE\" : \"READ\" , ( unsigned long long ) request . from , ( unsigned long long ) request . from / 512 , len ) ; # endif memcpy ( reply . handle , request . handle , sizeof ( reply . handle ) ) ; if ( ( request . from + len ) > ( OFFT_MAX ) ) { DEBUG ( \"[Number<S2SV_blank>too<S2SV_blank>large!]\" ) ; ERROR ( client , reply , EINVAL ) ; continue ; } if ( ( ( ssize_t ) ( ( off_t ) request . from + len ) > client -> exportsize ) ) { DEBUG ( \"[RANGE!]\" ) ; ERROR ( client , reply , EINVAL ) ; continue ; } if ( request . type == NBD_CMD_WRITE ) { DEBUG ( \"wr:<S2SV_blank>net->buf,<S2SV_blank>\" ) ; readit ( client -> net , buf , len ) ; DEBUG ( \"buf->exp,<S2SV_blank>\" ) ; if ( ( client -> server -> flags & F_READONLY ) || ( client -> server -> flags & F_AUTOREADONLY ) ) { DEBUG ( \"[WRITE<S2SV_blank>to<S2SV_blank>READONLY!]\" ) ; ERROR ( client , reply , EPERM ) ; continue ; } if ( expwrite ( request . from , buf , len , client ) ) { DEBUG ( \"Write<S2SV_blank>failed:<S2SV_blank>%m\" ) ; ERROR ( client , reply , errno ) ; continue ; } SEND ( client -> net , reply ) ; DEBUG ( \"OK!\\\\n\" ) ; continue ; } DEBUG ( \"exp->buf,<S2SV_blank>\" ) ; if ( expread ( request . from , buf + sizeof ( struct nbd_reply ) , len , client ) ) { DEBUG ( \"Read<S2SV_blank>failed:<S2SV_blank>%m\" ) ; ERROR ( client , reply , errno ) ; continue ; } DEBUG ( \"buf->net,<S2SV_blank>\" ) ; memcpy ( buf , & reply , sizeof ( struct nbd_reply ) ) ; writeit ( client -> net , buf , len + sizeof ( struct nbd_reply ) ) ; DEBUG ( \"OK!\\\\n\" ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len > BUFSIZE - <S2SV_ModEnd> sizeof ( struct\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static void __nfs4_close ( struct path * path , struct nfs4_state * state , mode_t mode , int wait ) <S2SV_EndBug> { struct nfs4_state_owner * owner = state -> owner ; int call_close = 0 ; <S2SV_StartBug> int newstate ; <S2SV_EndBug> atomic_inc ( & owner -> so_count ) ; spin_lock ( & owner -> so_lock ) ; <S2SV_StartBug> switch ( mode & ( FMODE_READ | FMODE_WRITE ) ) { <S2SV_EndBug> case FMODE_READ : state -> n_rdonly -- ; break ; case FMODE_WRITE : state -> n_wronly -- ; break ; case FMODE_READ | FMODE_WRITE : state -> n_rdwr -- ; } newstate = FMODE_READ | FMODE_WRITE ; if ( state -> n_rdwr == 0 ) { if ( state -> n_rdonly == 0 ) { newstate &= ~ FMODE_READ ; call_close |= test_bit ( NFS_O_RDONLY_STATE , & state -> flags ) ; call_close |= test_bit ( NFS_O_RDWR_STATE , & state -> flags ) ; } if ( state -> n_wronly == 0 ) { newstate &= ~ FMODE_WRITE ; call_close |= test_bit ( NFS_O_WRONLY_STATE , & state -> flags ) ; call_close |= test_bit ( NFS_O_RDWR_STATE , & state -> flags ) ; } if ( newstate == 0 ) clear_bit ( NFS_DELEGATED_STATE , & state -> flags ) ; } nfs4_state_set_mode_locked ( state , newstate ) ; spin_unlock ( & owner -> so_lock ) ; if ( ! call_close ) { nfs4_put_open_state ( state ) ; nfs4_put_state_owner ( owner ) ; } else nfs4_do_close ( path , state , wait ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * state , fmode_t fmode <S2SV_ModEnd> , int wait <S2SV_ModStart> = 0 ; fmode_t <S2SV_ModEnd> newstate ; atomic_inc <S2SV_ModStart> ; switch ( fmode <S2SV_ModEnd> & ( FMODE_READ\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2058\n\n```\nCWE-119 static int host_start ( struct ci13xxx * ci ) { struct usb_hcd * hcd ; struct ehci_hcd * ehci ; int ret ; if ( usb_disabled ( ) ) return - ENODEV ; hcd = usb_create_hcd ( & ci_ehci_hc_driver , ci -> dev , dev_name ( ci -> dev ) ) ; if ( ! hcd ) return - ENOMEM ; dev_set_drvdata ( ci -> dev , ci ) ; hcd -> rsrc_start = ci -> hw_bank . phys ; hcd -> rsrc_len = ci -> hw_bank . size ; hcd -> regs = ci -> hw_bank . abs ; hcd -> has_tt = 1 ; hcd -> power_budget = ci -> platdata -> power_budget ; hcd -> phy = ci -> transceiver ; ehci = hcd_to_ehci ( hcd ) ; ehci -> caps = ci -> hw_bank . cap ; ehci -> has_hostpc = ci -> hw_bank . lpm ; ret = usb_add_hcd ( hcd , 0 , 0 ) ; if ( ret ) usb_put_hcd ( hcd ) ; else ci -> hcd = hcd ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = hcd ; if ( ci -> platdata -> flags & CI13XXX_DISABLE_STREAMING ) hw_write ( ci , OP_USBMODE , USBMODE_CI_SDIS , USBMODE_CI_SDIS ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4569\n\n```\nCWE-200 static int snd_timer_user_params ( struct file * file , struct snd_timer_params __user * _params ) { struct snd_timer_user * tu ; struct snd_timer_params params ; struct snd_timer * t ; struct snd_timer_read * tr ; struct snd_timer_tread * ttr ; int err ; tu = file -> private_data ; if ( ! tu -> timeri ) return - EBADFD ; t = tu -> timeri -> timer ; if ( ! t ) return - EBADFD ; if ( copy_from_user ( & params , _params , sizeof ( params ) ) ) return - EFAULT ; if ( ! ( t -> hw . flags & SNDRV_TIMER_HW_SLAVE ) && params . ticks < 1 ) { err = - EINVAL ; goto _end ; } if ( params . queue_size > 0 && ( params . queue_size < 32 || params . queue_size > 1024 ) ) { err = - EINVAL ; goto _end ; } if ( params . filter & ~ ( ( 1 << SNDRV_TIMER_EVENT_RESOLUTION ) | ( 1 << SNDRV_TIMER_EVENT_TICK ) | ( 1 << SNDRV_TIMER_EVENT_START ) | ( 1 << SNDRV_TIMER_EVENT_STOP ) | ( 1 << SNDRV_TIMER_EVENT_CONTINUE ) | ( 1 << SNDRV_TIMER_EVENT_PAUSE ) | ( 1 << SNDRV_TIMER_EVENT_SUSPEND ) | ( 1 << SNDRV_TIMER_EVENT_RESUME ) | ( 1 << SNDRV_TIMER_EVENT_MSTART ) | ( 1 << SNDRV_TIMER_EVENT_MSTOP ) | ( 1 << SNDRV_TIMER_EVENT_MCONTINUE ) | ( 1 << SNDRV_TIMER_EVENT_MPAUSE ) | ( 1 << SNDRV_TIMER_EVENT_MSUSPEND ) | ( 1 << SNDRV_TIMER_EVENT_MRESUME ) ) ) { err = - EINVAL ; goto _end ; } snd_timer_stop ( tu -> timeri ) ; spin_lock_irq ( & t -> lock ) ; tu -> timeri -> flags &= ~ ( SNDRV_TIMER_IFLG_AUTO | SNDRV_TIMER_IFLG_EXCLUSIVE | SNDRV_TIMER_IFLG_EARLY_EVENT ) ; if ( params . flags & SNDRV_TIMER_PSFLG_AUTO ) tu -> timeri -> flags |= SNDRV_TIMER_IFLG_AUTO ; if ( params . flags & SNDRV_TIMER_PSFLG_EXCLUSIVE ) tu -> timeri -> flags |= SNDRV_TIMER_IFLG_EXCLUSIVE ; if ( params . flags & SNDRV_TIMER_PSFLG_EARLY_EVENT ) tu -> timeri -> flags |= SNDRV_TIMER_IFLG_EARLY_EVENT ; spin_unlock_irq ( & t -> lock ) ; if ( params . queue_size > 0 && ( unsigned int ) tu -> queue_size != params . queue_size ) { if ( tu -> tread ) { ttr = kmalloc ( params . queue_size * sizeof ( * ttr ) , GFP_KERNEL ) ; if ( ttr ) { kfree ( tu -> tqueue ) ; tu -> queue_size = params . queue_size ; tu -> tqueue = ttr ; } } else { tr = kmalloc ( params . queue_size * sizeof ( * tr ) , GFP_KERNEL ) ; if ( tr ) { kfree ( tu -> queue ) ; tu -> queue_size = params . queue_size ; tu -> queue = tr ; } } } tu -> qhead = tu -> qtail = tu -> qused = 0 ; if ( tu -> timeri -> flags & SNDRV_TIMER_IFLG_EARLY_EVENT ) { if ( tu -> tread ) { struct snd_timer_tread tread ; <S2SV_StartBug> tread . event = SNDRV_TIMER_EVENT_EARLY ; <S2SV_EndBug> tread . tstamp . tv_sec = 0 ; tread . tstamp . tv_nsec = 0 ; tread . val = 0 ; snd_timer_user_append_to_tqueue ( tu , & tread ) ; } else { struct snd_timer_read * r = & tu -> queue [ 0 ] ; r -> resolution = 0 ; r -> ticks = 0 ; tu -> qused ++ ; tu -> qtail ++ ; } } tu -> filter = params . filter ; tu -> ticks = params . ticks ; err = 0 ; _end : if ( copy_to_user ( _params , & params , sizeof ( params ) ) ) return - EFAULT ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snd_timer_tread tread ; memset ( & tread , 0 , sizeof ( tread ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4348\n\n```\nCWE-362 int sctp_rcv ( struct sk_buff * skb ) { struct sock * sk ; struct sctp_association * asoc ; struct sctp_endpoint * ep = NULL ; struct sctp_ep_common * rcvr ; struct sctp_transport * transport = NULL ; struct sctp_chunk * chunk ; struct sctphdr * sh ; union sctp_addr src ; union sctp_addr dest ; int family ; struct sctp_af * af ; if ( skb -> pkt_type != PACKET_HOST ) goto discard_it ; SCTP_INC_STATS_BH ( SCTP_MIB_INSCTPPACKS ) ; if ( skb_linearize ( skb ) ) goto discard_it ; sh = sctp_hdr ( skb ) ; __skb_pull ( skb , skb_transport_offset ( skb ) ) ; if ( skb -> len < sizeof ( struct sctphdr ) ) goto discard_it ; if ( ! skb_csum_unnecessary ( skb ) && sctp_rcv_checksum ( skb ) < 0 ) goto discard_it ; skb_pull ( skb , sizeof ( struct sctphdr ) ) ; if ( skb -> len < sizeof ( struct sctp_chunkhdr ) ) goto discard_it ; family = ipver2af ( ip_hdr ( skb ) -> version ) ; af = sctp_get_af_specific ( family ) ; if ( unlikely ( ! af ) ) goto discard_it ; af -> from_skb ( & src , skb , 1 ) ; af -> from_skb ( & dest , skb , 0 ) ; if ( ! af -> addr_valid ( & src , NULL , skb ) || ! af -> addr_valid ( & dest , NULL , skb ) ) goto discard_it ; asoc = __sctp_rcv_lookup ( skb , & src , & dest , & transport ) ; if ( ! asoc ) ep = __sctp_rcv_lookup_endpoint ( & dest ) ; rcvr = asoc ? & asoc -> base : & ep -> base ; sk = rcvr -> sk ; if ( sk -> sk_bound_dev_if && ( sk -> sk_bound_dev_if != af -> skb_iif ( skb ) ) ) { if ( asoc ) { sctp_association_put ( asoc ) ; asoc = NULL ; } else { sctp_endpoint_put ( ep ) ; ep = NULL ; } sk = sctp_get_ctl_sock ( ) ; ep = sctp_sk ( sk ) -> ep ; sctp_endpoint_hold ( ep ) ; rcvr = & ep -> base ; } if ( ! asoc ) { if ( sctp_rcv_ootb ( skb ) ) { SCTP_INC_STATS_BH ( SCTP_MIB_OUTOFBLUES ) ; goto discard_release ; } } if ( ! xfrm_policy_check ( sk , XFRM_POLICY_IN , skb , family ) ) goto discard_release ; nf_reset ( skb ) ; if ( sk_filter ( sk , skb ) ) goto discard_release ; chunk = sctp_chunkify ( skb , asoc , sk ) ; if ( ! chunk ) goto discard_release ; SCTP_INPUT_CB ( skb ) -> chunk = chunk ; chunk -> rcvr = rcvr ; chunk -> sctp_hdr = sh ; sctp_init_addrs ( chunk , & src , & dest ) ; chunk -> transport = transport ; sctp_bh_lock_sock ( sk ) ; <S2SV_StartBug> if ( sock_owned_by_user ( sk ) ) { <S2SV_EndBug> SCTP_INC_STATS_BH ( SCTP_MIB_IN_PKT_BACKLOG ) ; sctp_add_backlog ( sk , skb ) ; } else { SCTP_INC_STATS_BH ( SCTP_MIB_IN_PKT_SOFTIRQ ) ; sctp_inq_push ( & chunk -> rcvr -> inqueue , chunk ) ; } sctp_bh_unlock_sock ( sk ) ; if ( asoc ) sctp_association_put ( asoc ) ; else sctp_endpoint_put ( ep ) ; return 0 ; discard_it : SCTP_INC_STATS_BH ( SCTP_MIB_IN_PKT_DISCARDS ) ; kfree_skb ( skb ) ; return 0 ; discard_release : if ( asoc ) sctp_association_put ( asoc ) ; else sctp_endpoint_put ( ep ) ; goto discard_it ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( sk != rcvr -> sk ) { sctp_bh_unlock_sock ( sk ) ; sk = rcvr -> sk ; sctp_bh_lock_sock ( sk ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12991\n\n```\nCWE-125 static int bgp_attr_print ( netdissect_options * ndo , u_int atype , const u_char * pptr , u_int len ) { int i ; uint16_t af ; uint8_t safi , snpa , nhlen ; union { float f ; uint32_t i ; } bw ; int advance ; u_int tlen ; const u_char * tptr ; char buf [ MAXHOSTNAMELEN + 100 ] ; int as_size ; tptr = pptr ; tlen = len ; switch ( atype ) { case BGPTYPE_ORIGIN : if ( len != 1 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK ( * tptr ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_origin_values , \"Unknown<S2SV_blank>Origin<S2SV_blank>Typecode\" , tptr [ 0 ] ) ) ) ; } break ; case BGPTYPE_AS4_PATH : case BGPTYPE_AS_PATH : if ( len % 2 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } if ( ! len ) { ND_PRINT ( ( ndo , \"empty\" ) ) ; break ; } as_size = bgp_attr_get_as_size ( ndo , atype , pptr , len ) ; while ( tptr < pptr + len ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_open_values , <S2SV_StartBug> \"?\" , tptr [ 0 ] ) ) ) ; <S2SV_EndBug> for ( i = 0 ; i < tptr [ 1 ] * as_size ; i += as_size ) { ND_TCHECK2 ( tptr [ 2 + i ] , as_size ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , as_printf ( ndo , astostr , sizeof ( astostr ) , as_size == 2 ? EXTRACT_16BITS ( & tptr [ 2 + i ] ) : EXTRACT_32BITS ( & tptr [ 2 + i ] ) ) ) ) ; } ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( bgp_as_path_segment_close_values , \"?\" , tptr [ 0 ] ) ) ) ; ND_TCHECK ( tptr [ 1 ] ) ; tptr += 2 + tptr [ 1 ] * as_size ; } break ; case BGPTYPE_NEXT_HOP : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; } break ; case BGPTYPE_MULTI_EXIT_DISC : case BGPTYPE_LOCAL_PREF : if ( len != 4 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; else { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%u\" , EXTRACT_32BITS ( tptr ) ) ) ; } break ; case BGPTYPE_ATOMIC_AGGREGATE : if ( len != 0 ) ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; case BGPTYPE_AGGREGATOR : if ( len != 6 && len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , len ) ; if ( len == 6 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_16BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 2 ) ) ) ; } else { ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; } break ; case BGPTYPE_AGGREGATOR4 : if ( len != 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>AS<S2SV_blank>#%s,<S2SV_blank>origin<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGPTYPE_COMMUNITIES : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint32_t comm ; ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; comm = EXTRACT_32BITS ( tptr ) ; switch ( comm ) { case BGP_COMMUNITY_NO_EXPORT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT\" ) ) ; break ; case BGP_COMMUNITY_NO_ADVERT : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_ADVERTISE\" ) ) ; break ; case BGP_COMMUNITY_NO_EXPORT_SUBCONFED : ND_PRINT ( ( ndo , \"<S2SV_blank>NO_EXPORT_SUBCONFED\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%u:%u%s\" , ( comm >> 16 ) & 0xffff , comm & 0xffff , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; break ; } tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_ORIGINATOR_ID : if ( len != 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGPTYPE_CLUSTER_LIST : if ( len % 4 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"%s%s\" , ipaddr_string ( ndo , tptr ) , ( tlen > 4 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tlen -= 4 ; tptr += 4 ; } break ; case BGPTYPE_MP_REACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; goto done ; break ; } tptr += 3 ; ND_TCHECK ( tptr [ 0 ] ) ; nhlen = tptr [ 0 ] ; tlen = nhlen ; tptr ++ ; if ( tlen ) { int nnh = 0 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>nexthop:<S2SV_blank>\" ) ) ; while ( tlen > 0 ) { if ( nnh ++ > 0 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; } switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET << 8 | SAFNUM_MDT ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in_addr ) ; tptr += sizeof ( struct in_addr ) ; } break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : if ( tlen < ( int ) sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ip6addr_string ( ndo , tptr ) ) ) ; tlen -= sizeof ( struct in6_addr ) ; tptr += sizeof ( struct in6_addr ) ; } break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN ) ) ) ; tlen -= ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; tptr += ( sizeof ( struct in6_addr ) + BGP_VPN_RD_LEN ) ; } break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < ( int ) sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , sizeof ( struct in_addr ) ) ; ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr ) ) ) ; tlen -= ( sizeof ( struct in_addr ) ) ; tptr += ( sizeof ( struct in_addr ) ) ; } break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"%s\" , isonsap_string ( ndo , tptr , tlen ) ) ) ; tptr += tlen ; tlen = 0 ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : if ( tlen < BGP_VPN_RD_LEN + 1 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; tlen = 0 ; } else { ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"RD:<S2SV_blank>%s,<S2SV_blank>%s\" , bgp_vpn_rd_print ( ndo , tptr ) , isonsap_string ( ndo , tptr + BGP_VPN_RD_LEN , tlen - BGP_VPN_RD_LEN ) ) ) ; if ( EXTRACT_32BITS ( tptr + BGP_VPN_RD_LEN ) == 0x47000601 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr + BGP_VPN_RD_LEN + 4 ) ) ) ; else if ( EXTRACT_24BITS ( tptr + BGP_VPN_RD_LEN ) == 0x350000 ) ND_PRINT ( ( ndo , \"<S2SV_blank>=<S2SV_blank>%s\" , ip6addr_string ( ndo , tptr + BGP_VPN_RD_LEN + 3 ) ) ) ; tptr += tlen ; tlen = 0 ; } break ; default : ND_TCHECK2 ( tptr [ 0 ] , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u/SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; tptr += tlen ; tlen = 0 ; goto done ; break ; } } } ND_PRINT ( ( ndo , \",<S2SV_blank>nh-length:<S2SV_blank>%u\" , nhlen ) ) ; tptr += tlen ; ND_TCHECK ( tptr [ 0 ] ) ; snpa = tptr [ 0 ] ; tptr ++ ; if ( snpa ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%u<S2SV_blank>SNPA\" , snpa ) ) ; for ( ; snpa > 0 ; snpa -- ) { ND_TCHECK ( tptr [ 0 ] ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d<S2SV_blank>bytes\" , tptr [ 0 ] ) ) ; tptr += tptr [ 0 ] + 1 ; } } else { ND_PRINT ( ( ndo , \",<S2SV_blank>no<S2SV_blank>SNPA\" ) ) ; } while ( len - ( tptr - pptr ) > 0 ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_RT_ROUTING_INFO ) : advance = decode_rt_routing_info ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * tptr , tlen ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } done : break ; case BGPTYPE_MP_UNREACH_NLRI : ND_TCHECK2 ( tptr [ 0 ] , BGP_MP_NLRI_MINSIZE ) ; af = EXTRACT_16BITS ( tptr ) ; safi = tptr [ 2 ] ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>AFI:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>%sSAFI:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown<S2SV_blank>AFI\" , af ) , af , ( safi > 128 ) ? \"vendor<S2SV_blank>specific<S2SV_blank>\" : \"\" , tok2str ( bgp_safi_values , \"Unknown<S2SV_blank>SAFI\" , safi ) , safi ) ) ; if ( len == BGP_MP_NLRI_MINSIZE ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>End-of-Rib<S2SV_blank>Marker<S2SV_blank>(empty<S2SV_blank>NLRI)\" ) ) ; tptr += 3 ; while ( len - ( tptr - pptr ) > 0 ) { switch ( af << 8 | safi ) { case ( AFNUM_INET << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix4 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix4 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_UNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_LABUNICAST ) : advance = decode_labeled_prefix6 ( ndo , tptr , len , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else if ( advance == - 3 ) break ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_INET6 << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_prefix6 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_VPLS << 8 | SAFNUM_VPLS ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_L2VPN << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_l2 ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_UNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_MULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_UNIMULTICAST ) : advance = decode_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNMULTICAST ) : case ( AFNUM_NSAP << 8 | SAFNUM_VPNUNIMULTICAST ) : advance = decode_labeled_vpn_clnp_prefix ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MDT ) : advance = decode_mdt_vpn_nlri ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; case ( AFNUM_INET << 8 | SAFNUM_MULTICAST_VPN ) : case ( AFNUM_INET6 << 8 | SAFNUM_MULTICAST_VPN ) : advance = decode_multicast_vpn ( ndo , tptr , buf , sizeof ( buf ) ) ; if ( advance == - 1 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>(illegal<S2SV_blank>prefix<S2SV_blank>length)\" ) ) ; else if ( advance == - 2 ) goto trunc ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s\" , buf ) ) ; break ; default : ND_TCHECK2 ( * ( tptr - 3 ) , tlen ) ; ND_PRINT ( ( ndo , \"no<S2SV_blank>AFI<S2SV_blank>%u<S2SV_blank>/<S2SV_blank>SAFI<S2SV_blank>%u<S2SV_blank>decoder\" , af , safi ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr - 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; advance = 0 ; tptr = pptr + len ; break ; } if ( advance < 0 ) break ; tptr += advance ; } break ; case BGPTYPE_EXTD_COMMUNITIES : if ( len % 8 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } while ( tlen > 0 ) { uint16_t extd_comm ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; extd_comm = EXTRACT_16BITS ( tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>Flags<S2SV_blank>[%s]\" , tok2str ( bgp_extd_comm_subtype_values , \"unknown<S2SV_blank>extd<S2SV_blank>community<S2SV_blank>typecode\" , extd_comm ) , extd_comm , bittok2str ( bgp_extd_comm_flag_values , \"none\" , extd_comm ) ) ) ; ND_TCHECK2 ( * ( tptr + 2 ) , 6 ) ; switch ( extd_comm ) { case BGP_EXT_COM_RT_0 : case BGP_EXT_COM_RO_0 : case BGP_EXT_COM_L2VPN_RT_0 : ND_PRINT ( ( ndo , \":<S2SV_blank>%u:%u<S2SV_blank>(=<S2SV_blank>%s)\" , EXTRACT_16BITS ( tptr + 2 ) , EXTRACT_32BITS ( tptr + 4 ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_RT_1 : case BGP_EXT_COM_RO_1 : case BGP_EXT_COM_L2VPN_RT_1 : case BGP_EXT_COM_VRF_RT_IMP : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , ipaddr_string ( ndo , tptr + 2 ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_RT_2 : case BGP_EXT_COM_RO_2 : ND_PRINT ( ( ndo , \":<S2SV_blank>%s:%u\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr + 2 ) ) , EXTRACT_16BITS ( tptr + 6 ) ) ) ; break ; case BGP_EXT_COM_LINKBAND : bw . i = EXTRACT_32BITS ( tptr + 2 ) ; ND_PRINT ( ( ndo , \":<S2SV_blank>bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case BGP_EXT_COM_VPN_ORIGIN : case BGP_EXT_COM_VPN_ORIGIN2 : case BGP_EXT_COM_VPN_ORIGIN3 : case BGP_EXT_COM_VPN_ORIGIN4 : case BGP_EXT_COM_OSPF_RID : case BGP_EXT_COM_OSPF_RID2 : ND_PRINT ( ( ndo , \"%s\" , ipaddr_string ( ndo , tptr + 2 ) ) ) ; break ; case BGP_EXT_COM_OSPF_RTYPE : case BGP_EXT_COM_OSPF_RTYPE2 : ND_PRINT ( ( ndo , \":<S2SV_blank>area:%s,<S2SV_blank>router-type:%s,<S2SV_blank>metric-type:%s%s\" , ipaddr_string ( ndo , tptr + 2 ) , tok2str ( bgp_extd_comm_ospf_rtype_values , \"unknown<S2SV_blank>(0x%02x)\" , * ( tptr + 6 ) ) , ( * ( tptr + 7 ) & BGP_OSPF_RTYPE_METRIC_TYPE ) ? \"E2\" : \"\" , ( ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_EXT ) || ( * ( tptr + 6 ) == BGP_OSPF_RTYPE_NSSA ) ) ? \"E1\" : \"\" ) ) ; break ; case BGP_EXT_COM_L2INFO : ND_PRINT ( ( ndo , \":<S2SV_blank>%s<S2SV_blank>Control<S2SV_blank>Flags<S2SV_blank>[0x%02x]:MTU<S2SV_blank>%u\" , tok2str ( l2vpn_encaps_values , \"unknown<S2SV_blank>encaps\" , * ( tptr + 2 ) ) , * ( tptr + 3 ) , EXTRACT_16BITS ( tptr + 4 ) ) ) ; break ; case BGP_EXT_COM_SOURCE_AS : ND_PRINT ( ( ndo , \":<S2SV_blank>AS<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 2 ) ) ) ; break ; default : ND_TCHECK2 ( * tptr , 8 ) ; print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , 8 ) ; break ; } tlen -= 8 ; tptr += 8 ; } break ; case BGPTYPE_PMSI_TUNNEL : { uint8_t tunnel_type , flags ; tunnel_type = * ( tptr + 1 ) ; flags = * tptr ; tlen = len ; ND_TCHECK2 ( tptr [ 0 ] , 5 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-type<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Flags<S2SV_blank>[%s],<S2SV_blank>MPLS<S2SV_blank>Label<S2SV_blank>%u\" , tok2str ( bgp_pmsi_tunnel_values , \"Unknown\" , tunnel_type ) , tunnel_type , bittok2str ( bgp_pmsi_flag_values , \"none\" , flags ) , EXTRACT_24BITS ( tptr + 2 ) >> 4 ) ) ; tptr += 5 ; tlen -= 5 ; switch ( tunnel_type ) { case BGP_PMSI_TUNNEL_PIM_SM : case BGP_PMSI_TUNNEL_PIM_BIDIR : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Sender<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_PIM_SSM : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>P-Group<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) , ipaddr_string ( ndo , tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_INGRESS : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tunnel-Endpoint<S2SV_blank>%s\" , ipaddr_string ( ndo , tptr ) ) ) ; break ; case BGP_PMSI_TUNNEL_LDP_P2MP : case BGP_PMSI_TUNNEL_LDP_MP2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Root-Node<S2SV_blank>%s,<S2SV_blank>LSP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; case BGP_PMSI_TUNNEL_RSVP_P2MP : ND_TCHECK2 ( tptr [ 0 ] , 8 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Extended-Tunnel-ID<S2SV_blank>%s,<S2SV_blank>P2MP-ID<S2SV_blank>0x%08x\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr + 4 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , tlen ) ; } } break ; } case BGPTYPE_AIGP : { uint8_t type ; uint16_t length ; ND_TCHECK2 ( tptr [ 0 ] , 3 ) ; tlen = len ; while ( tlen >= 3 ) { type = * tptr ; length = EXTRACT_16BITS ( tptr + 1 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>TLV<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( bgp_aigp_values , \"Unknown\" , type ) , type , length ) ) ; ND_TCHECK2 ( tptr [ 3 ] , length - 3 ) ; switch ( type ) { case BGP_AIGP_TLV : ND_TCHECK2 ( tptr [ 3 ] , 8 ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>metric<S2SV_blank>%\" PRIu64 , EXTRACT_64BITS ( tptr + 3 ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) { print_unknown_data ( ndo , tptr + 3 , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , length - 3 ) ; } } tptr += length ; tlen -= length ; } break ; } case BGPTYPE_ATTR_SET : ND_TCHECK2 ( tptr [ 0 ] , 4 ) ; if ( len < 4 ) goto trunc ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Origin<S2SV_blank>AS:<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( tptr ) ) ) ) ; tptr += 4 ; len -= 4 ; while ( len ) { u_int aflags , alenlen , alen ; ND_TCHECK2 ( tptr [ 0 ] , 2 ) ; if ( len < 2 ) goto trunc ; aflags = * tptr ; atype = * ( tptr + 1 ) ; tptr += 2 ; len -= 2 ; alenlen = bgp_attr_lenlen ( aflags , tptr ) ; ND_TCHECK2 ( tptr [ 0 ] , alenlen ) ; if ( len < alenlen ) goto trunc ; alen = bgp_attr_len ( aflags , tptr ) ; tptr += alenlen ; len -= alenlen ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_attr_values , \"Unknown<S2SV_blank>Attribute\" , atype ) , atype , alen ) ) ; if ( aflags ) { ND_PRINT ( ( ndo , \",<S2SV_blank>Flags<S2SV_blank>[%s%s%s%s\" , aflags & 0x80 ? \"O\" : \"\" , aflags & 0x40 ? \"T\" : \"\" , aflags & 0x20 ? \"P\" : \"\" , aflags & 0x10 ? \"E\" : \"\" ) ) ; if ( aflags & 0xf ) ND_PRINT ( ( ndo , \"+%x\" , aflags & 0xf ) ) ; ND_PRINT ( ( ndo , \"]:<S2SV_blank>\" ) ) ; } if ( ! bgp_attr_print ( ndo , atype , tptr , alen ) ) return 0 ; tptr += alen ; len -= alen ; } break ; case BGPTYPE_LARGE_COMMUNITY : if ( len == 0 || len % 12 ) { ND_PRINT ( ( ndo , \"invalid<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ) ; while ( len > 0 ) { ND_TCHECK2 ( * tptr , 12 ) ; ND_PRINT ( ( ndo , \"%u:%u:%u%s\" , EXTRACT_32BITS ( tptr ) , EXTRACT_32BITS ( tptr + 4 ) , EXTRACT_32BITS ( tptr + 8 ) , ( len > 12 ) ? \",<S2SV_blank>\" : \"\" ) ) ; tptr += 12 ; len -= 12 ; } break ; default : ND_TCHECK2 ( * pptr , len ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>no<S2SV_blank>Attribute<S2SV_blank>%u<S2SV_blank>decoder\" , atype ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; break ; } if ( ndo -> ndo_vflag > 1 && len ) { ND_TCHECK2 ( * pptr , len ) ; print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , len ) ; } return 1 ; trunc : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ) ) ; ND_TCHECK ( tptr [ 1 ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2390\n\n```\nCWE-399 int hugetlb_reserve_pages ( struct inode * inode , long from , long to , struct vm_area_struct * vma , vm_flags_t vm_flags ) { long ret , chg ; struct hstate * h = hstate_inode ( inode ) ; struct hugepage_subpool * spool = subpool_inode ( inode ) ; if ( vm_flags & VM_NORESERVE ) return 0 ; if ( ! vma || vma -> vm_flags & VM_MAYSHARE ) chg = region_chg ( & inode -> i_mapping -> private_list , from , to ) ; else { struct resv_map * resv_map = resv_map_alloc ( ) ; if ( ! resv_map ) return - ENOMEM ; chg = to - from ; set_vma_resv_map ( vma , resv_map ) ; set_vma_resv_flags ( vma , HPAGE_RESV_OWNER ) ; } if ( chg < 0 ) <S2SV_StartBug> return chg ; <S2SV_EndBug> if ( hugepage_subpool_get_pages ( spool , chg ) ) <S2SV_StartBug> return - ENOSPC ; <S2SV_EndBug> <S2SV_StartBug> ret = hugetlb_acct_memory ( h , chg ) ; <S2SV_EndBug> if ( ret < 0 ) { hugepage_subpool_put_pages ( spool , chg ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> } if ( ! vma || vma -> vm_flags & VM_MAYSHARE ) region_add ( & inode -> i_mapping -> private_list , from , to ) ; return 0 ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < 0 ) { ret = chg ; goto out_err ; } <S2SV_ModEnd> if ( hugepage_subpool_get_pages <S2SV_ModStart> chg ) ) { ret = <S2SV_ModEnd> - ENOSPC ; <S2SV_ModStart> - ENOSPC ; goto out_err ; } <S2SV_ModStart> chg ) ; goto out_err <S2SV_ModEnd> ; } if <S2SV_ModStart> return 0 ; out_err : resv_map_put ( vma ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2124\n\n```\nCWE-000 char * guestfs___first_line_of_file ( guestfs_h * g , const char * filename ) { <S2SV_StartBug> CLEANUP_FREE char * * lines = NULL ; <S2SV_EndBug> int64_t size ; char * ret ; size = guestfs_filesize ( g , filename ) ; if ( size == - 1 ) return NULL ; if ( size > MAX_SMALL_FILE_SIZE ) { error ( g , _ ( \"size<S2SV_blank>of<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>unreasonably<S2SV_blank>large<S2SV_blank>(%\" PRIi64 \"<S2SV_blank>bytes)\" ) , filename , size ) ; return NULL ; } lines = guestfs_head_n ( g , 1 , filename ) ; if ( lines == NULL ) return NULL ; if ( lines [ 0 ] == NULL ) { guestfs___free_string_list ( lines ) ; return safe_strdup ( g , \"\" ) ; } ret = lines [ 0 ] ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filename ) { <S2SV_ModEnd> char * * <S2SV_ModStart> 0 ] ; free ( lines ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2930\n\n```\nCWE-264 static int perf_trace_event_perm ( struct ftrace_event_call * tp_event , struct perf_event * p_event ) { if ( ftrace_event_is_function ( tp_event ) && <S2SV_StartBug> perf_paranoid_kernel ( ) && ! capable ( CAP_SYS_ADMIN ) ) <S2SV_EndBug> return - EPERM ; if ( ! ( p_event -> attr . sample_type & PERF_SAMPLE_RAW ) ) return 0 ; if ( p_event -> attach_state == PERF_ATTACH_TASK ) { if ( tp_event -> flags & TRACE_EVENT_FL_CAP_ANY ) return 0 ; } if ( perf_paranoid_tracepoint_raw ( ) && ! capable ( CAP_SYS_ADMIN ) ) return - EPERM ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tp_event ) && perf_paranoid_tracepoint_raw <S2SV_ModEnd> ( ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11219\n\n```\nCWE-190 static size_t optsize ( lua_State * L , char opt , const char * * fmt ) { switch ( opt ) { case 'B' : case 'b' : return sizeof ( char ) ; case 'H' : case 'h' : return sizeof ( short ) ; case 'L' : case 'l' : return sizeof ( long ) ; case 'T' : return sizeof ( size_t ) ; case 'f' : return sizeof ( float ) ; case 'd' : return sizeof ( double ) ; case 'x' : return 1 ; <S2SV_StartBug> case 'c' : return getnum ( L , fmt , 1 ) ; <S2SV_EndBug> case 'i' : case 'I' : { <S2SV_StartBug> int sz = getnum ( L , fmt , sizeof ( int ) ) ; <S2SV_EndBug> if ( sz > MAXINTSIZE ) luaL_error ( L , \"integral<S2SV_blank>size<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>limit<S2SV_blank>of<S2SV_blank>%d\" , sz , MAXINTSIZE ) ; return sz ; } default : return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return getnum ( <S2SV_ModEnd> fmt , 1 <S2SV_ModStart> = getnum ( <S2SV_ModEnd> fmt , sizeof\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27675\n\n```\nCWE-362 int get_evtchn_to_irq ( evtchn_port_t evtchn ) { if ( evtchn >= xen_evtchn_max_channels ( ) ) return - 1 ; if ( evtchn_to_irq [ EVTCHN_ROW ( evtchn ) ] == NULL ) return - 1 ; <S2SV_StartBug> return evtchn_to_irq [ EVTCHN_ROW ( evtchn ) ] [ EVTCHN_COL ( evtchn ) ] ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; return READ_ONCE ( <S2SV_ModStart> evtchn ) ] )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int do_16x16_motion_search ( VP9_COMP * cpi , const int_mv * ref_mv , <S2SV_EndBug> int_mv * dst_mv , int mb_row , int mb_col ) { <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; unsigned int err , tmp_err ; <S2SV_StartBug> int_mv tmp_mv ; <S2SV_EndBug> err = vp9_sad16x16 ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , <S2SV_StartBug> xd -> plane [ 0 ] . pre [ 0 ] . buf , xd -> plane [ 0 ] . pre [ 0 ] . stride , <S2SV_EndBug> INT_MAX ) ; dst_mv -> as_int = 0 ; <S2SV_StartBug> tmp_err = do_16x16_motion_iteration ( cpi , & ref_mv -> as_mv , & tmp_mv . as_mv , <S2SV_EndBug> mb_row , mb_col ) ; if ( tmp_err < err ) { err = tmp_err ; dst_mv -> as_int = tmp_mv . as_int ; } if ( ref_mv -> as_int ) { unsigned int tmp_err ; int_mv zero_ref_mv , tmp_mv ; zero_ref_mv . as_int = 0 ; tmp_err = do_16x16_motion_iteration ( cpi , & zero_ref_mv . as_mv , & tmp_mv . as_mv , mb_row , mb_col ) ; if ( tmp_err < err ) { dst_mv -> as_int = tmp_mv . as_int ; err = tmp_err ; } } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpi , const MV * ref_mv , int_mv * <S2SV_ModEnd> dst_mv , int <S2SV_ModStart> & cpi -> td . <S2SV_ModStart> , tmp_err ; MV tmp_mv ; err = vpx_sad16x16 <S2SV_ModEnd> ( x -> <S2SV_ModStart> ] . stride <S2SV_ModEnd> ) ; dst_mv <S2SV_ModStart> ( cpi , ref_mv , & tmp_mv , mb_row , mb_col ) ; if ( tmp_err < err ) { err = tmp_err ; dst_mv -> as_mv = tmp_mv ; } if ( ref_mv -> row != 0 || ref_mv -> col != 0 ) { unsigned int tmp_err ; MV zero_ref_mv = { 0 , 0 } , tmp_mv ; tmp_err = do_16x16_motion_iteration ( cpi , & zero_ref_mv , & tmp_mv , mb_row , mb_col ) ; if ( tmp_err < err ) { dst_mv -> as_mv = tmp_mv <S2SV_ModEnd> ; err =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t tcpSendResetSegment ( NetInterface * interface , IpPseudoHeader * pseudoHeader , TcpHeader * segment , size_t length ) { error_t error ; size_t offset ; uint8_t flags ; uint32_t seqNum ; uint32_t ackNum ; NetBuffer * buffer ; TcpHeader * segment2 ; IpPseudoHeader pseudoHeader2 ; NetTxAncillary ancillary ; if ( segment -> flags & TCP_FLAG_ACK ) { flags = TCP_FLAG_RST ; seqNum = segment -> ackNum ; ackNum = 0 ; } else { flags = TCP_FLAG_RST | TCP_FLAG_ACK ; seqNum = 0 ; ackNum = segment -> seqNum + length ; if ( segment -> flags & TCP_FLAG_SYN ) <S2SV_StartBug> ackNum ++ ; <S2SV_EndBug> <S2SV_StartBug> if ( segment -> flags & TCP_FLAG_FIN ) <S2SV_EndBug> <S2SV_StartBug> ackNum ++ ; <S2SV_EndBug> } buffer = ipAllocBuffer ( sizeof ( TcpHeader ) , & offset ) ; if ( buffer == NULL ) return ERROR_OUT_OF_MEMORY ; segment2 = netBufferAt ( buffer , offset ) ; segment2 -> srcPort = htons ( segment -> destPort ) ; segment2 -> destPort = htons ( segment -> srcPort ) ; segment2 -> seqNum = htonl ( seqNum ) ; segment2 -> ackNum = htonl ( ackNum ) ; segment2 -> reserved1 = 0 ; segment2 -> dataOffset = 5 ; segment2 -> flags = flags ; segment2 -> reserved2 = 0 ; segment2 -> window = 0 ; segment2 -> checksum = 0 ; segment2 -> urgentPointer = 0 ; # if ( IPV4_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv4PseudoHeader ) ) { pseudoHeader2 . length = sizeof ( Ipv4PseudoHeader ) ; pseudoHeader2 . ipv4Data . srcAddr = pseudoHeader -> ipv4Data . destAddr ; pseudoHeader2 . ipv4Data . destAddr = pseudoHeader -> ipv4Data . srcAddr ; pseudoHeader2 . ipv4Data . reserved = 0 ; pseudoHeader2 . ipv4Data . protocol = IPV4_PROTOCOL_TCP ; pseudoHeader2 . ipv4Data . length = HTONS ( sizeof ( TcpHeader ) ) ; segment2 -> checksum = ipCalcUpperLayerChecksumEx ( & pseudoHeader2 . ipv4Data , sizeof ( Ipv4PseudoHeader ) , buffer , offset , sizeof ( TcpHeader ) ) ; } else # endif # if ( IPV6_SUPPORT == ENABLED ) if ( pseudoHeader -> length == sizeof ( Ipv6PseudoHeader ) ) { pseudoHeader2 . length = sizeof ( Ipv6PseudoHeader ) ; pseudoHeader2 . ipv6Data . srcAddr = pseudoHeader -> ipv6Data . destAddr ; pseudoHeader2 . ipv6Data . destAddr = pseudoHeader -> ipv6Data . srcAddr ; pseudoHeader2 . ipv6Data . length = HTONL ( sizeof ( TcpHeader ) ) ; pseudoHeader2 . ipv6Data . reserved [ 0 ] = 0 ; pseudoHeader2 . ipv6Data . reserved [ 1 ] = 0 ; pseudoHeader2 . ipv6Data . reserved [ 2 ] = 0 ; pseudoHeader2 . ipv6Data . nextHeader = IPV6_TCP_HEADER ; segment2 -> checksum = ipCalcUpperLayerChecksumEx ( & pseudoHeader2 . ipv6Data , sizeof ( Ipv6PseudoHeader ) , buffer , offset , sizeof ( TcpHeader ) ) ; } else # endif { netBufferFree ( buffer ) ; return ERROR_INVALID_ADDRESS ; } MIB2_INC_COUNTER32 ( tcpGroup . tcpOutSegs , 1 ) ; TCP_MIB_INC_COUNTER32 ( tcpOutSegs , 1 ) ; TCP_MIB_INC_COUNTER64 ( tcpHCOutSegs , 1 ) ; MIB2_INC_COUNTER32 ( tcpGroup . tcpOutRsts , 1 ) ; TCP_MIB_INC_COUNTER32 ( tcpOutRsts , 1 ) ; TRACE_DEBUG ( \"%s:<S2SV_blank>Sending<S2SV_blank>TCP<S2SV_blank>reset<S2SV_blank>segment...\\\\r\\\\n\" , formatSystemTime ( osGetSystemTime ( ) , NULL ) ) ; tcpDumpHeader ( segment2 , length , 0 , 0 ) ; ancillary = NET_DEFAULT_TX_ANCILLARY ; error = ipSendDatagram ( interface , & pseudoHeader2 , buffer , offset , & ancillary ) ; netBufferFree ( buffer ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & TCP_FLAG_SYN ) { <S2SV_ModStart> ackNum ++ ; } <S2SV_ModStart> & TCP_FLAG_FIN ) { <S2SV_ModStart> ackNum ++ ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2546\n\n```\nCWE-362 static long snd_timer_user_ioctl ( struct file * file , unsigned int cmd , unsigned long arg ) { <S2SV_StartBug> struct snd_timer_user * tu ; <S2SV_EndBug> void __user * argp = ( void __user * ) arg ; int __user * p = argp ; tu = file -> private_data ; <S2SV_StartBug> switch ( cmd ) { <S2SV_EndBug> case SNDRV_TIMER_IOCTL_PVERSION : return put_user ( SNDRV_TIMER_VERSION , p ) ? - EFAULT : 0 ; case SNDRV_TIMER_IOCTL_NEXT_DEVICE : return snd_timer_user_next_device ( argp ) ; case SNDRV_TIMER_IOCTL_TREAD : { int xarg ; <S2SV_StartBug> mutex_lock ( & tu -> tread_sem ) ; <S2SV_EndBug> if ( tu -> timeri ) { mutex_unlock ( & tu -> tread_sem ) ; return - EBUSY ; } if ( get_user ( xarg , p ) ) { mutex_unlock ( & tu -> tread_sem ) ; return - EFAULT ; } tu -> tread = xarg ? 1 : 0 ; <S2SV_StartBug> mutex_unlock ( & tu -> tread_sem ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> } case SNDRV_TIMER_IOCTL_GINFO : return snd_timer_user_ginfo ( file , argp ) ; case SNDRV_TIMER_IOCTL_GPARAMS : return snd_timer_user_gparams ( file , argp ) ; case SNDRV_TIMER_IOCTL_GSTATUS : return snd_timer_user_gstatus ( file , argp ) ; case SNDRV_TIMER_IOCTL_SELECT : return snd_timer_user_tselect ( file , argp ) ; case SNDRV_TIMER_IOCTL_INFO : return snd_timer_user_info ( file , argp ) ; case SNDRV_TIMER_IOCTL_PARAMS : return snd_timer_user_params ( file , argp ) ; case SNDRV_TIMER_IOCTL_STATUS : return snd_timer_user_status ( file , argp ) ; case SNDRV_TIMER_IOCTL_START : case SNDRV_TIMER_IOCTL_START_OLD : return snd_timer_user_start ( file ) ; case SNDRV_TIMER_IOCTL_STOP : case SNDRV_TIMER_IOCTL_STOP_OLD : return snd_timer_user_stop ( file ) ; case SNDRV_TIMER_IOCTL_CONTINUE : case SNDRV_TIMER_IOCTL_CONTINUE_OLD : return snd_timer_user_continue ( file ) ; case SNDRV_TIMER_IOCTL_PAUSE : case SNDRV_TIMER_IOCTL_PAUSE_OLD : return snd_timer_user_pause ( file ) ; } return - ENOTTY ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snd_timer_user * tu <S2SV_ModEnd> = file -> <S2SV_ModStart> -> private_data ; long ret <S2SV_ModEnd> ; mutex_lock ( <S2SV_ModStart> & tu -> ioctl_lock ) ; ret = __snd_timer_user_ioctl ( file , cmd , arg ) <S2SV_ModEnd> ; mutex_unlock ( <S2SV_ModStart> & tu -> ioctl_lock <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 void monitor_apply_keystate ( struct monitor * pmonitor ) { struct ssh * ssh = active_state ; struct kex * kex ; int r ; debug3 ( \"%s:<S2SV_blank>packet_set_state\" , __func__ ) ; if ( ( r = ssh_packet_set_state ( ssh , child_state ) ) != 0 ) fatal ( \"%s:<S2SV_blank>packet_set_state:<S2SV_blank>%s\" , __func__ , ssh_err ( r ) ) ; sshbuf_free ( child_state ) ; child_state = NULL ; if ( ( kex = ssh -> kex ) != NULL ) { # ifdef WITH_OPENSSL kex -> kex [ KEX_DH_GRP1_SHA1 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP14_SHA1 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP14_SHA256 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP16_SHA512 ] = kexdh_server ; kex -> kex [ KEX_DH_GRP18_SHA512 ] = kexdh_server ; kex -> kex [ KEX_DH_GEX_SHA1 ] = kexgex_server ; kex -> kex [ KEX_DH_GEX_SHA256 ] = kexgex_server ; kex -> kex [ KEX_ECDH_SHA2 ] = kexecdh_server ; # endif kex -> kex [ KEX_C25519_SHA256 ] = kexc25519_server ; kex -> load_host_public_key = & get_hostkey_public_by_type ; kex -> load_host_private_key = & get_hostkey_private_by_type ; kex -> host_key_index = & get_hostkey_index ; kex -> sign = sshd_hostkey_sign ; } <S2SV_StartBug> if ( options . compression ) { <S2SV_EndBug> ssh_packet_set_compress_hooks ( ssh , pmonitor -> m_zlib , ( ssh_packet_comp_alloc_func * ) mm_zalloc , ( ssh_packet_comp_free_func * ) mm_zfree ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sshd_hostkey_sign ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2922\n\n```\nCWE-17 static void ndisc_router_discovery ( struct sk_buff * skb ) { struct ra_msg * ra_msg = ( struct ra_msg * ) skb_transport_header ( skb ) ; struct neighbour * neigh = NULL ; struct inet6_dev * in6_dev ; struct rt6_info * rt = NULL ; int lifetime ; struct ndisc_options ndopts ; int optlen ; unsigned int pref = 0 ; __u8 * opt = ( __u8 * ) ( ra_msg + 1 ) ; optlen = ( skb_tail_pointer ( skb ) - skb_transport_header ( skb ) ) - sizeof ( struct ra_msg ) ; ND_PRINTK ( 2 , info , \"RA:<S2SV_blank>%s,<S2SV_blank>dev:<S2SV_blank>%s\\\\n\" , __func__ , skb -> dev -> name ) ; if ( ! ( ipv6_addr_type ( & ipv6_hdr ( skb ) -> saddr ) & IPV6_ADDR_LINKLOCAL ) ) { ND_PRINTK ( 2 , warn , \"RA:<S2SV_blank>source<S2SV_blank>address<S2SV_blank>is<S2SV_blank>not<S2SV_blank>link-local\\\\n\" ) ; return ; } if ( optlen < 0 ) { ND_PRINTK ( 2 , warn , \"RA:<S2SV_blank>packet<S2SV_blank>too<S2SV_blank>short\\\\n\" ) ; return ; } # ifdef CONFIG_IPV6_NDISC_NODETYPE if ( skb -> ndisc_nodetype == NDISC_NODETYPE_HOST ) { ND_PRINTK ( 2 , warn , \"RA:<S2SV_blank>from<S2SV_blank>host<S2SV_blank>or<S2SV_blank>unauthorized<S2SV_blank>router\\\\n\" ) ; return ; } # endif in6_dev = __in6_dev_get ( skb -> dev ) ; if ( in6_dev == NULL ) { ND_PRINTK ( 0 , err , \"RA:<S2SV_blank>can\\'t<S2SV_blank>find<S2SV_blank>inet6<S2SV_blank>device<S2SV_blank>for<S2SV_blank>%s\\\\n\" , skb -> dev -> name ) ; return ; } if ( ! ndisc_parse_options ( opt , optlen , & ndopts ) ) { ND_PRINTK ( 2 , warn , \"RA:<S2SV_blank>invalid<S2SV_blank>ND<S2SV_blank>options\\\\n\" ) ; return ; } if ( ! ipv6_accept_ra ( in6_dev ) ) { ND_PRINTK ( 2 , info , \"RA:<S2SV_blank>%s,<S2SV_blank>did<S2SV_blank>not<S2SV_blank>accept<S2SV_blank>ra<S2SV_blank>for<S2SV_blank>dev:<S2SV_blank>%s\\\\n\" , __func__ , skb -> dev -> name ) ; goto skip_linkparms ; } # ifdef CONFIG_IPV6_NDISC_NODETYPE if ( skb -> ndisc_nodetype == NDISC_NODETYPE_NODEFAULT ) { ND_PRINTK ( 2 , info , \"RA:<S2SV_blank>%s,<S2SV_blank>nodetype<S2SV_blank>is<S2SV_blank>NODEFAULT,<S2SV_blank>dev:<S2SV_blank>%s\\\\n\" , __func__ , skb -> dev -> name ) ; goto skip_linkparms ; } # endif if ( in6_dev -> if_flags & IF_RS_SENT ) { in6_dev -> if_flags |= IF_RA_RCVD ; } in6_dev -> if_flags = ( in6_dev -> if_flags & ~ ( IF_RA_MANAGED | IF_RA_OTHERCONF ) ) | ( ra_msg -> icmph . icmp6_addrconf_managed ? IF_RA_MANAGED : 0 ) | ( ra_msg -> icmph . icmp6_addrconf_other ? IF_RA_OTHERCONF : 0 ) ; if ( ! in6_dev -> cnf . accept_ra_defrtr ) { ND_PRINTK ( 2 , info , \"RA:<S2SV_blank>%s,<S2SV_blank>defrtr<S2SV_blank>is<S2SV_blank>false<S2SV_blank>for<S2SV_blank>dev:<S2SV_blank>%s\\\\n\" , __func__ , skb -> dev -> name ) ; goto skip_defrtr ; } if ( ! in6_dev -> cnf . accept_ra_from_local && ipv6_chk_addr ( dev_net ( in6_dev -> dev ) , & ipv6_hdr ( skb ) -> saddr , NULL , 0 ) ) { ND_PRINTK ( 2 , info , \"RA<S2SV_blank>from<S2SV_blank>local<S2SV_blank>address<S2SV_blank>detected<S2SV_blank>on<S2SV_blank>dev:<S2SV_blank>%s:<S2SV_blank>default<S2SV_blank>router<S2SV_blank>ignored\\\\n\" , skb -> dev -> name ) ; goto skip_defrtr ; } lifetime = ntohs ( ra_msg -> icmph . icmp6_rt_lifetime ) ; # ifdef CONFIG_IPV6_ROUTER_PREF pref = ra_msg -> icmph . icmp6_router_pref ; if ( pref == ICMPV6_ROUTER_PREF_INVALID || ! in6_dev -> cnf . accept_ra_rtr_pref ) pref = ICMPV6_ROUTER_PREF_MEDIUM ; # endif rt = rt6_get_dflt_router ( & ipv6_hdr ( skb ) -> saddr , skb -> dev ) ; if ( rt ) { neigh = dst_neigh_lookup ( & rt -> dst , & ipv6_hdr ( skb ) -> saddr ) ; if ( ! neigh ) { ND_PRINTK ( 0 , err , \"RA:<S2SV_blank>%s<S2SV_blank>got<S2SV_blank>default<S2SV_blank>router<S2SV_blank>without<S2SV_blank>neighbour\\\\n\" , __func__ ) ; ip6_rt_put ( rt ) ; return ; } } if ( rt && lifetime == 0 ) { ip6_del_rt ( rt ) ; rt = NULL ; } ND_PRINTK ( 3 , info , \"RA:<S2SV_blank>rt:<S2SV_blank>%p<S2SV_blank><S2SV_blank>lifetime:<S2SV_blank>%d,<S2SV_blank>for<S2SV_blank>dev:<S2SV_blank>%s\\\\n\" , rt , lifetime , skb -> dev -> name ) ; if ( rt == NULL && lifetime ) { ND_PRINTK ( 3 , info , \"RA:<S2SV_blank>adding<S2SV_blank>default<S2SV_blank>router\\\\n\" ) ; rt = rt6_add_dflt_router ( & ipv6_hdr ( skb ) -> saddr , skb -> dev , pref ) ; if ( rt == NULL ) { ND_PRINTK ( 0 , err , \"RA:<S2SV_blank>%s<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>add<S2SV_blank>default<S2SV_blank>route\\\\n\" , __func__ ) ; return ; } neigh = dst_neigh_lookup ( & rt -> dst , & ipv6_hdr ( skb ) -> saddr ) ; if ( neigh == NULL ) { ND_PRINTK ( 0 , err , \"RA:<S2SV_blank>%s<S2SV_blank>got<S2SV_blank>default<S2SV_blank>router<S2SV_blank>without<S2SV_blank>neighbour\\\\n\" , __func__ ) ; ip6_rt_put ( rt ) ; return ; } neigh -> flags |= NTF_ROUTER ; } else if ( rt ) { rt -> rt6i_flags = ( rt -> rt6i_flags & ~ RTF_PREF_MASK ) | RTF_PREF ( pref ) ; } if ( rt ) rt6_set_expires ( rt , jiffies + ( HZ * lifetime ) ) ; if ( ra_msg -> icmph . icmp6_hop_limit ) { <S2SV_StartBug> in6_dev -> cnf . hop_limit = ra_msg -> icmph . icmp6_hop_limit ; <S2SV_EndBug> if ( rt ) dst_metric_set ( & rt -> dst , RTAX_HOPLIMIT , ra_msg -> icmph . icmp6_hop_limit ) ; } skip_defrtr : if ( in6_dev -> nd_parms ) { unsigned long rtime = ntohl ( ra_msg -> retrans_timer ) ; if ( rtime && rtime / 1000 < MAX_SCHEDULE_TIMEOUT / HZ ) { rtime = ( rtime * HZ ) / 1000 ; if ( rtime < HZ / 10 ) rtime = HZ / 10 ; NEIGH_VAR_SET ( in6_dev -> nd_parms , RETRANS_TIME , rtime ) ; in6_dev -> tstamp = jiffies ; inet6_ifinfo_notify ( RTM_NEWLINK , in6_dev ) ; } rtime = ntohl ( ra_msg -> reachable_time ) ; if ( rtime && rtime / 1000 < MAX_SCHEDULE_TIMEOUT / ( 3 * HZ ) ) { rtime = ( rtime * HZ ) / 1000 ; if ( rtime < HZ / 10 ) rtime = HZ / 10 ; if ( rtime != NEIGH_VAR ( in6_dev -> nd_parms , BASE_REACHABLE_TIME ) ) { NEIGH_VAR_SET ( in6_dev -> nd_parms , BASE_REACHABLE_TIME , rtime ) ; NEIGH_VAR_SET ( in6_dev -> nd_parms , GC_STALETIME , 3 * rtime ) ; in6_dev -> nd_parms -> reachable_time = neigh_rand_reach_time ( rtime ) ; in6_dev -> tstamp = jiffies ; inet6_ifinfo_notify ( RTM_NEWLINK , in6_dev ) ; } } } skip_linkparms : if ( ! neigh ) neigh = __neigh_lookup ( & nd_tbl , & ipv6_hdr ( skb ) -> saddr , skb -> dev , 1 ) ; if ( neigh ) { u8 * lladdr = NULL ; if ( ndopts . nd_opts_src_lladdr ) { lladdr = ndisc_opt_addr_data ( ndopts . nd_opts_src_lladdr , skb -> dev ) ; if ( ! lladdr ) { ND_PRINTK ( 2 , warn , \"RA:<S2SV_blank>invalid<S2SV_blank>link-layer<S2SV_blank>address<S2SV_blank>length\\\\n\" ) ; goto out ; } } neigh_update ( neigh , lladdr , NUD_STALE , NEIGH_UPDATE_F_WEAK_OVERRIDE | NEIGH_UPDATE_F_OVERRIDE | NEIGH_UPDATE_F_OVERRIDE_ISROUTER | NEIGH_UPDATE_F_ISROUTER ) ; } if ( ! ipv6_accept_ra ( in6_dev ) ) { ND_PRINTK ( 2 , info , \"RA:<S2SV_blank>%s,<S2SV_blank>accept_ra<S2SV_blank>is<S2SV_blank>false<S2SV_blank>for<S2SV_blank>dev:<S2SV_blank>%s\\\\n\" , __func__ , skb -> dev -> name ) ; goto out ; } # ifdef CONFIG_IPV6_ROUTE_INFO if ( ! in6_dev -> cnf . accept_ra_from_local && ipv6_chk_addr ( dev_net ( in6_dev -> dev ) , & ipv6_hdr ( skb ) -> saddr , NULL , 0 ) ) { ND_PRINTK ( 2 , info , \"RA<S2SV_blank>from<S2SV_blank>local<S2SV_blank>address<S2SV_blank>detected<S2SV_blank>on<S2SV_blank>dev:<S2SV_blank>%s:<S2SV_blank>router<S2SV_blank>info<S2SV_blank>ignored.\\\\n\" , skb -> dev -> name ) ; goto skip_routeinfo ; } if ( in6_dev -> cnf . accept_ra_rtr_pref && ndopts . nd_opts_ri ) { struct nd_opt_hdr * p ; for ( p = ndopts . nd_opts_ri ; p ; p = ndisc_next_option ( p , ndopts . nd_opts_ri_end ) ) { struct route_info * ri = ( struct route_info * ) p ; # ifdef CONFIG_IPV6_NDISC_NODETYPE if ( skb -> ndisc_nodetype == NDISC_NODETYPE_NODEFAULT && ri -> prefix_len == 0 ) continue ; # endif if ( ri -> prefix_len == 0 && ! in6_dev -> cnf . accept_ra_defrtr ) continue ; if ( ri -> prefix_len > in6_dev -> cnf . accept_ra_rt_info_max_plen ) continue ; rt6_route_rcv ( skb -> dev , ( u8 * ) p , ( p -> nd_opt_len ) << 3 , & ipv6_hdr ( skb ) -> saddr ) ; } } skip_routeinfo : # endif # ifdef CONFIG_IPV6_NDISC_NODETYPE if ( skb -> ndisc_nodetype == NDISC_NODETYPE_NODEFAULT ) { ND_PRINTK ( 2 , info , \"RA:<S2SV_blank>%s,<S2SV_blank>nodetype<S2SV_blank>is<S2SV_blank>NODEFAULT<S2SV_blank>(interior<S2SV_blank>routes),<S2SV_blank>dev:<S2SV_blank>%s\\\\n\" , __func__ , skb -> dev -> name ) ; goto out ; } # endif if ( in6_dev -> cnf . accept_ra_pinfo && ndopts . nd_opts_pi ) { struct nd_opt_hdr * p ; for ( p = ndopts . nd_opts_pi ; p ; p = ndisc_next_option ( p , ndopts . nd_opts_pi_end ) ) { addrconf_prefix_rcv ( skb -> dev , ( u8 * ) p , ( p -> nd_opt_len ) << 3 , ndopts . nd_opts_src_lladdr != NULL ) ; } } if ( ndopts . nd_opts_mtu && in6_dev -> cnf . accept_ra_mtu ) { __be32 n ; u32 mtu ; memcpy ( & n , ( ( u8 * ) ( ndopts . nd_opts_mtu + 1 ) ) + 2 , sizeof ( mtu ) ) ; mtu = ntohl ( n ) ; if ( mtu < IPV6_MIN_MTU || mtu > skb -> dev -> mtu ) { ND_PRINTK ( 2 , warn , \"RA:<S2SV_blank>invalid<S2SV_blank>mtu:<S2SV_blank>%d\\\\n\" , mtu ) ; } else if ( in6_dev -> cnf . mtu6 != mtu ) { in6_dev -> cnf . mtu6 = mtu ; if ( rt ) dst_metric_set ( & rt -> dst , RTAX_MTU , mtu ) ; rt6_mtu_change ( skb -> dev , mtu ) ; } } if ( ndopts . nd_useropts ) { struct nd_opt_hdr * p ; for ( p = ndopts . nd_useropts ; p ; p = ndisc_next_useropt ( p , ndopts . nd_useropts_end ) ) { ndisc_ra_useropt ( skb , p ) ; } } if ( ndopts . nd_opts_tgt_lladdr || ndopts . nd_opts_rh ) { ND_PRINTK ( 2 , warn , \"RA:<S2SV_blank>invalid<S2SV_blank>RA<S2SV_blank>options\\\\n\" ) ; } out : ip6_rt_put ( rt ) ; if ( neigh ) neigh_release ( neigh ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> icmp6_hop_limit ) { if ( <S2SV_ModStart> cnf . hop_limit < <S2SV_ModEnd> ra_msg -> icmph <S2SV_ModStart> icmph . icmp6_hop_limit ) { in6_dev -> cnf . hop_limit = ra_msg -> icmph . icmp6_hop_limit ; } else { ND_PRINTK ( 2 , warn , \"RA:<S2SV_blank>Got<S2SV_blank>route<S2SV_blank>advertisement<S2SV_blank>with<S2SV_blank>lower<S2SV_blank>hop_limit<S2SV_blank>than<S2SV_blank>current\\\\n\" ) ; } <S2SV_ModEnd> if ( rt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6704\n\n```\nCWE-119 int sock_getsockopt ( struct socket * sock , int level , int optname , char __user * optval , int __user * optlen ) { struct sock * sk = sock -> sk ; union { int val ; struct linger ling ; struct timeval tm ; } v ; int lv = sizeof ( int ) ; int len ; if ( get_user ( len , optlen ) ) return - EFAULT ; if ( len < 0 ) return - EINVAL ; memset ( & v , 0 , sizeof ( v ) ) ; switch ( optname ) { case SO_DEBUG : v . val = sock_flag ( sk , SOCK_DBG ) ; break ; case SO_DONTROUTE : v . val = sock_flag ( sk , SOCK_LOCALROUTE ) ; break ; case SO_BROADCAST : v . val = ! ! sock_flag ( sk , SOCK_BROADCAST ) ; break ; case SO_SNDBUF : v . val = sk -> sk_sndbuf ; break ; case SO_RCVBUF : v . val = sk -> sk_rcvbuf ; break ; case SO_REUSEADDR : v . val = sk -> sk_reuse ; break ; case SO_KEEPALIVE : v . val = ! ! sock_flag ( sk , SOCK_KEEPOPEN ) ; break ; case SO_TYPE : v . val = sk -> sk_type ; break ; case SO_PROTOCOL : v . val = sk -> sk_protocol ; break ; case SO_DOMAIN : v . val = sk -> sk_family ; break ; case SO_ERROR : v . val = - sock_error ( sk ) ; if ( v . val == 0 ) v . val = xchg ( & sk -> sk_err_soft , 0 ) ; break ; case SO_OOBINLINE : v . val = ! ! sock_flag ( sk , SOCK_URGINLINE ) ; break ; case SO_NO_CHECK : v . val = sk -> sk_no_check ; break ; case SO_PRIORITY : v . val = sk -> sk_priority ; break ; case SO_LINGER : lv = sizeof ( v . ling ) ; v . ling . l_onoff = ! ! sock_flag ( sk , SOCK_LINGER ) ; v . ling . l_linger = sk -> sk_lingertime / HZ ; break ; case SO_BSDCOMPAT : sock_warn_obsolete_bsdism ( \"getsockopt\" ) ; break ; case SO_TIMESTAMP : v . val = sock_flag ( sk , SOCK_RCVTSTAMP ) && ! sock_flag ( sk , SOCK_RCVTSTAMPNS ) ; break ; case SO_TIMESTAMPNS : v . val = sock_flag ( sk , SOCK_RCVTSTAMPNS ) ; break ; case SO_TIMESTAMPING : v . val = 0 ; if ( sock_flag ( sk , SOCK_TIMESTAMPING_TX_HARDWARE ) ) v . val |= SOF_TIMESTAMPING_TX_HARDWARE ; if ( sock_flag ( sk , SOCK_TIMESTAMPING_TX_SOFTWARE ) ) v . val |= SOF_TIMESTAMPING_TX_SOFTWARE ; if ( sock_flag ( sk , SOCK_TIMESTAMPING_RX_HARDWARE ) ) v . val |= SOF_TIMESTAMPING_RX_HARDWARE ; if ( sock_flag ( sk , SOCK_TIMESTAMPING_RX_SOFTWARE ) ) v . val |= SOF_TIMESTAMPING_RX_SOFTWARE ; if ( sock_flag ( sk , SOCK_TIMESTAMPING_SOFTWARE ) ) v . val |= SOF_TIMESTAMPING_SOFTWARE ; if ( sock_flag ( sk , SOCK_TIMESTAMPING_SYS_HARDWARE ) ) v . val |= SOF_TIMESTAMPING_SYS_HARDWARE ; if ( sock_flag ( sk , SOCK_TIMESTAMPING_RAW_HARDWARE ) ) v . val |= SOF_TIMESTAMPING_RAW_HARDWARE ; break ; case SO_RCVTIMEO : lv = sizeof ( struct timeval ) ; if ( sk -> sk_rcvtimeo == MAX_SCHEDULE_TIMEOUT ) { v . tm . tv_sec = 0 ; v . tm . tv_usec = 0 ; } else { v . tm . tv_sec = sk -> sk_rcvtimeo / HZ ; v . tm . tv_usec = ( ( sk -> sk_rcvtimeo % HZ ) * 1000000 ) / HZ ; } break ; case SO_SNDTIMEO : lv = sizeof ( struct timeval ) ; if ( sk -> sk_sndtimeo == MAX_SCHEDULE_TIMEOUT ) { v . tm . tv_sec = 0 ; v . tm . tv_usec = 0 ; } else { v . tm . tv_sec = sk -> sk_sndtimeo / HZ ; v . tm . tv_usec = ( ( sk -> sk_sndtimeo % HZ ) * 1000000 ) / HZ ; } break ; case SO_RCVLOWAT : v . val = sk -> sk_rcvlowat ; break ; case SO_SNDLOWAT : v . val = 1 ; break ; case SO_PASSCRED : <S2SV_StartBug> v . val = test_bit ( SOCK_PASSCRED , & sock -> flags ) ? 1 : 0 ; <S2SV_EndBug> break ; case SO_PEERCRED : { struct ucred peercred ; if ( len > sizeof ( peercred ) ) len = sizeof ( peercred ) ; cred_to_ucred ( sk -> sk_peer_pid , sk -> sk_peer_cred , & peercred ) ; if ( copy_to_user ( optval , & peercred , len ) ) return - EFAULT ; goto lenout ; } case SO_PEERNAME : { char address [ 128 ] ; if ( sock -> ops -> getname ( sock , ( struct sockaddr * ) address , & lv , 2 ) ) return - ENOTCONN ; if ( lv < len ) return - EINVAL ; if ( copy_to_user ( optval , address , len ) ) return - EFAULT ; goto lenout ; } case SO_ACCEPTCONN : v . val = sk -> sk_state == TCP_LISTEN ; break ; case SO_PASSSEC : <S2SV_StartBug> v . val = test_bit ( SOCK_PASSSEC , & sock -> flags ) ? 1 : 0 ; <S2SV_EndBug> break ; case SO_PEERSEC : return security_socket_getpeersec_stream ( sock , optval , optlen , len ) ; case SO_MARK : v . val = sk -> sk_mark ; break ; case SO_RXQ_OVFL : v . val = ! ! sock_flag ( sk , SOCK_RXQ_OVFL ) ; break ; case SO_WIFI_STATUS : v . val = ! ! sock_flag ( sk , SOCK_WIFI_STATUS ) ; break ; case SO_PEEK_OFF : if ( ! sock -> ops -> set_peek_off ) return - EOPNOTSUPP ; v . val = sk -> sk_peek_off ; break ; case SO_NOFCS : v . val = ! ! sock_flag ( sk , SOCK_NOFCS ) ; break ; default : return - ENOPROTOOPT ; } if ( len > lv ) len = lv ; if ( copy_to_user ( optval , & v , len ) ) return - EFAULT ; lenout : if ( put_user ( len , optlen ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . val = ! ! <S2SV_ModStart> -> flags ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> . val = ! ! <S2SV_ModStart> -> flags ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12984\n\n```\nCWE-476 static int nfc_genl_deactivate_target ( struct sk_buff * skb , struct genl_info * info ) { struct nfc_dev * dev ; u32 device_idx , target_idx ; int rc ; <S2SV_StartBug> if ( ! info -> attrs [ NFC_ATTR_DEVICE_INDEX ] ) <S2SV_EndBug> return - EINVAL ; device_idx = nla_get_u32 ( info -> attrs [ NFC_ATTR_DEVICE_INDEX ] ) ; dev = nfc_get_device ( device_idx ) ; if ( ! dev ) return - ENODEV ; target_idx = nla_get_u32 ( info -> attrs [ NFC_ATTR_TARGET_INDEX ] ) ; rc = nfc_deactivate_target ( dev , target_idx , NFC_TARGET_MODE_SLEEP ) ; nfc_put_device ( dev ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> attrs [ NFC_ATTR_DEVICE_INDEX ] || ! info -> attrs [ NFC_ATTR_TARGET_INDEX\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8767\n\n```\nCWE-362 static void sctp_generate_timeout_event ( struct sctp_association * asoc , sctp_event_timeout_t timeout_type ) { <S2SV_StartBug> struct net * net = sock_net ( asoc -> base . sk ) ; <S2SV_EndBug> int error = 0 ; <S2SV_StartBug> bh_lock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> <S2SV_StartBug> if ( sock_owned_by_user ( asoc -> base . sk ) ) { <S2SV_EndBug> pr_debug ( \"%s:<S2SV_blank>sock<S2SV_blank>is<S2SV_blank>busy:<S2SV_blank>timer<S2SV_blank>%d\\\\n\" , __func__ , timeout_type ) ; if ( ! mod_timer ( & asoc -> timers [ timeout_type ] , jiffies + ( HZ / 20 ) ) ) sctp_association_hold ( asoc ) ; goto out_unlock ; } if ( asoc -> base . dead ) goto out_unlock ; error = sctp_do_sm ( net , SCTP_EVENT_T_TIMEOUT , SCTP_ST_TIMEOUT ( timeout_type ) , asoc -> state , asoc -> ep , asoc , ( void * ) timeout_type , GFP_ATOMIC ) ; if ( error ) <S2SV_StartBug> asoc -> base . sk -> sk_err = - error ; <S2SV_EndBug> out_unlock : <S2SV_StartBug> bh_unlock_sock ( asoc -> base . sk ) ; <S2SV_EndBug> sctp_association_put ( asoc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct sock * sk = asoc -> base . sk ; struct <S2SV_ModStart> = sock_net ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ; bh_lock_sock ( <S2SV_ModEnd> sk ) ; <S2SV_ModStart> ( sock_owned_by_user ( <S2SV_ModEnd> sk ) ) <S2SV_ModStart> ( error ) <S2SV_ModEnd> sk -> sk_err <S2SV_ModStart> : bh_unlock_sock ( <S2SV_ModEnd> sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6308\n\n```\nCWE-190 void * <S2SV_StartBug> xmalloc ( size_t size ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> <S2SV_StartBug> void * ptr = malloc ( size ) ; <S2SV_EndBug> if ( ! ptr && ( size != 0 ) ) { perror ( \"xmalloc:<S2SV_blank>Memory<S2SV_blank>allocation<S2SV_blank>failure\" ) ; abort ( ) ; } return ptr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> xmalloc ( size_t num , size_t <S2SV_ModStart> size ) { size_t res ; if ( check_mul_overflow ( num , size , & res ) ) abort ( ) ; <S2SV_ModStart> = malloc ( res <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6419\n\n```\nCWE-119 void lzxd_free ( struct lzxd_stream * lzx ) { struct mspack_system * sys ; if ( lzx ) { sys = lzx -> sys ; <S2SV_StartBug> sys -> free ( lzx -> inbuf ) ; <S2SV_EndBug> sys -> free ( lzx -> window ) ; sys -> free ( lzx ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sys ; if ( lzx -> inbuf ) <S2SV_ModStart> inbuf ) ; if ( lzx -> window )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8666\n\n```\nCWE-400 struct sk_buff * * udp_gro_receive ( struct sk_buff * * head , struct sk_buff * skb , struct udphdr * uh ) { struct udp_offload_priv * uo_priv ; struct sk_buff * p , * * pp = NULL ; struct udphdr * uh2 ; unsigned int off = skb_gro_offset ( skb ) ; int flush = 1 ; <S2SV_StartBug> if ( NAPI_GRO_CB ( skb ) -> udp_mark || <S2SV_EndBug> ( skb -> ip_summed != CHECKSUM_PARTIAL && NAPI_GRO_CB ( skb ) -> csum_cnt == 0 && ! NAPI_GRO_CB ( skb ) -> csum_valid ) ) goto out ; <S2SV_StartBug> NAPI_GRO_CB ( skb ) -> udp_mark = 1 ; <S2SV_EndBug> rcu_read_lock ( ) ; uo_priv = rcu_dereference ( udp_offload_base ) ; for ( ; uo_priv != NULL ; uo_priv = rcu_dereference ( uo_priv -> next ) ) { if ( net_eq ( read_pnet ( & uo_priv -> net ) , dev_net ( skb -> dev ) ) && uo_priv -> offload -> port == uh -> dest && uo_priv -> offload -> callbacks . gro_receive ) goto unflush ; } goto out_unlock ; unflush : flush = 0 ; for ( p = * head ; p ; p = p -> next ) { if ( ! NAPI_GRO_CB ( p ) -> same_flow ) continue ; uh2 = ( struct udphdr * ) ( p -> data + off ) ; if ( ( * ( u32 * ) & uh -> source != * ( u32 * ) & uh2 -> source ) || ( ! uh -> check ^ ! uh2 -> check ) ) { NAPI_GRO_CB ( p ) -> same_flow = 0 ; continue ; } } skb_gro_pull ( skb , sizeof ( struct udphdr ) ) ; skb_gro_postpull_rcsum ( skb , uh , sizeof ( struct udphdr ) ) ; NAPI_GRO_CB ( skb ) -> proto = uo_priv -> offload -> ipproto ; pp = uo_priv -> offload -> callbacks . gro_receive ( head , skb , uo_priv -> offload ) ; out_unlock : rcu_read_unlock ( ) ; out : NAPI_GRO_CB ( skb ) -> flush |= flush ; return pp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) -> encap_mark <S2SV_ModEnd> || ( skb <S2SV_ModStart> skb ) -> encap_mark <S2SV_ModEnd> = 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int64_t rd_pick_intra_sbuv_mode ( VP9_COMP * cpi , MACROBLOCK * x , PICK_MODE_CONTEXT * ctx , int * rate , int * rate_tokenonly , int64_t * distortion , int * skippable , BLOCK_SIZE bsize , TX_SIZE max_tx_size ) { MACROBLOCKD * xd = & x -> e_mbd ; <S2SV_StartBug> MB_PREDICTION_MODE mode ; <S2SV_EndBug> MB_PREDICTION_MODE mode_selected = DC_PRED ; int64_t best_rd = INT64_MAX , this_rd ; int this_rate_tokenonly , this_rate , s ; <S2SV_StartBug> int64_t this_distortion , this_sse ; <S2SV_EndBug> for ( mode = DC_PRED ; mode <= TM_PRED ; ++ mode ) { if ( ! ( cpi -> sf . intra_uv_mode_mask [ max_tx_size ] & ( 1 << mode ) ) ) continue ; xd -> mi [ 0 ] -> mbmi . uv_mode = mode ; <S2SV_StartBug> super_block_uvrd ( cpi , x , & this_rate_tokenonly , <S2SV_EndBug> <S2SV_StartBug> & this_distortion , & s , & this_sse , bsize , best_rd ) ; <S2SV_EndBug> if ( this_rate_tokenonly == INT_MAX ) continue ; this_rate = this_rate_tokenonly + <S2SV_StartBug> x -> intra_uv_mode_cost [ cpi -> common . frame_type ] [ mode ] ; <S2SV_EndBug> this_rd = RDCOST ( x -> rdmult , x -> rddiv , this_rate , this_distortion ) ; if ( this_rd < best_rd ) { mode_selected = mode ; best_rd = this_rd ; * rate = this_rate ; * rate_tokenonly = this_rate_tokenonly ; * distortion = this_distortion ; * skippable = s ; <S2SV_StartBug> if ( ! x -> select_txfm_size ) { <S2SV_EndBug> int i ; struct macroblock_plane * const p = x -> plane ; struct macroblockd_plane * const pd = xd -> plane ; for ( i = 1 ; i < MAX_MB_PLANE ; ++ i ) { p [ i ] . coeff = ctx -> coeff_pbuf [ i ] [ 2 ] ; p [ i ] . qcoeff = ctx -> qcoeff_pbuf [ i ] [ 2 ] ; pd [ i ] . dqcoeff = ctx -> dqcoeff_pbuf [ i ] [ 2 ] ; p [ i ] . eobs = ctx -> eobs_pbuf [ i ] [ 2 ] ; ctx -> coeff_pbuf [ i ] [ 2 ] = ctx -> coeff_pbuf [ i ] [ 0 ] ; ctx -> qcoeff_pbuf [ i ] [ 2 ] = ctx -> qcoeff_pbuf [ i ] [ 0 ] ; ctx -> dqcoeff_pbuf [ i ] [ 2 ] = ctx -> dqcoeff_pbuf [ i ] [ 0 ] ; ctx -> eobs_pbuf [ i ] [ 2 ] = ctx -> eobs_pbuf [ i ] [ 0 ] ; ctx -> coeff_pbuf [ i ] [ 0 ] = p [ i ] . coeff ; ctx -> qcoeff_pbuf [ i ] [ 0 ] = p [ i ] . qcoeff ; ctx -> dqcoeff_pbuf [ i ] [ 0 ] = pd [ i ] . dqcoeff ; ctx -> eobs_pbuf [ i ] [ 0 ] = p [ i ] . eobs ; } } } } xd -> mi [ 0 ] -> mbmi . uv_mode = mode_selected ; return best_rd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> e_mbd ; PREDICTION_MODE mode ; PREDICTION_MODE <S2SV_ModEnd> mode_selected = DC_PRED <S2SV_ModStart> this_distortion , this_sse ; memset ( x -> skip_txfm , SKIP_TXFM_NONE , sizeof ( x -> skip_txfm ) ) <S2SV_ModStart> = mode ; if ( ! <S2SV_ModStart> , best_rd ) <S2SV_ModEnd> ) continue ; <S2SV_ModStart> = this_rate_tokenonly + cpi <S2SV_ModEnd> -> intra_uv_mode_cost [ <S2SV_ModStart> ! x -> select_tx_size ) swap_block_ptr ( x , ctx , 2 , 0 , 1 , MAX_MB_PLANE ) ; <S2SV_ModEnd> } } xd\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_keyword ( PyObject * obj , keyword_ty * out , PyArena * arena ) { PyObject * tmp = NULL ; identifier arg ; expr_ty value ; <S2SV_StartBug> if ( exists_not_none ( obj , & PyId_arg ) ) { <S2SV_EndBug> int res ; <S2SV_StartBug> tmp = _PyObject_GetAttrId ( obj , & PyId_arg ) ; <S2SV_EndBug> if ( tmp == NULL ) goto failed ; <S2SV_StartBug> res = obj2ast_identifier ( tmp , & arg , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> arg = NULL ; } if ( _PyObject_HasAttrId ( obj , & PyId_value ) ) { int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_value ) ; if ( tmp == NULL ) goto failed ; res = obj2ast_expr ( tmp , & value , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>keyword\" ) ; return 1 ; } * out = keyword ( arg , value , arena ) ; return 0 ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_arg , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL || tmp == Py_None ) { Py_CLEAR ( tmp ) ; arg = NULL ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> int res ; res = obj2ast_identifier ( tmp , & arg , arena ) ; if ( res != 0 <S2SV_ModEnd> ) goto failed <S2SV_ModStart> goto failed ; Py_CLEAR ( tmp ) ; } if ( lookup_attr_id ( obj , & PyId_value , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"value\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>keyword\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & value <S2SV_ModEnd> , arena ) <S2SV_ModStart> ) ; } <S2SV_ModEnd> * out =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-25669\n\n```\nCWE-416 static void sunkbd_enable ( struct sunkbd * sunkbd , bool enable ) { serio_pause_rx ( sunkbd -> serio ) ; sunkbd -> enabled = enable ; serio_continue_rx ( sunkbd -> serio ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> serio ) ; if ( ! enable ) { wake_up_interruptible ( & sunkbd -> wait ) ; cancel_work_sync ( & sunkbd -> tq ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2523\n\n```\nCWE-20 static int dccp_packet ( struct nf_conn * ct , const struct sk_buff * skb , unsigned int dataoff , enum ip_conntrack_info ctinfo , u_int8_t pf , unsigned int hooknum , unsigned int * timeouts ) { struct net * net = nf_ct_net ( ct ) ; enum ip_conntrack_dir dir = CTINFO2DIR ( ctinfo ) ; struct dccp_hdr _dh , * dh ; u_int8_t type , old_state , new_state ; enum ct_dccp_roles role ; <S2SV_StartBug> dh = skb_header_pointer ( skb , dataoff , sizeof ( _dh ) , & dh ) ; <S2SV_EndBug> BUG_ON ( dh == NULL ) ; type = dh -> dccph_type ; if ( type == DCCP_PKT_RESET && ! test_bit ( IPS_SEEN_REPLY_BIT , & ct -> status ) ) { nf_ct_kill_acct ( ct , ctinfo , skb ) ; return NF_ACCEPT ; } spin_lock_bh ( & ct -> lock ) ; role = ct -> proto . dccp . role [ dir ] ; old_state = ct -> proto . dccp . state ; new_state = dccp_state_table [ role ] [ type ] [ old_state ] ; switch ( new_state ) { case CT_DCCP_REQUEST : if ( old_state == CT_DCCP_TIMEWAIT && role == CT_DCCP_ROLE_SERVER ) { ct -> proto . dccp . role [ dir ] = CT_DCCP_ROLE_CLIENT ; ct -> proto . dccp . role [ ! dir ] = CT_DCCP_ROLE_SERVER ; } break ; case CT_DCCP_RESPOND : if ( old_state == CT_DCCP_REQUEST ) ct -> proto . dccp . handshake_seq = dccp_hdr_seq ( dh ) ; break ; case CT_DCCP_PARTOPEN : if ( old_state == CT_DCCP_RESPOND && type == DCCP_PKT_ACK && dccp_ack_seq ( dh ) == ct -> proto . dccp . handshake_seq ) set_bit ( IPS_ASSURED_BIT , & ct -> status ) ; break ; case CT_DCCP_IGNORE : if ( ct -> proto . dccp . last_dir == ! dir && ct -> proto . dccp . last_pkt == DCCP_PKT_REQUEST && type == DCCP_PKT_RESPONSE ) { ct -> proto . dccp . role [ ! dir ] = CT_DCCP_ROLE_CLIENT ; ct -> proto . dccp . role [ dir ] = CT_DCCP_ROLE_SERVER ; ct -> proto . dccp . handshake_seq = dccp_hdr_seq ( dh ) ; new_state = CT_DCCP_RESPOND ; break ; } ct -> proto . dccp . last_dir = dir ; ct -> proto . dccp . last_pkt = type ; spin_unlock_bh ( & ct -> lock ) ; if ( LOG_INVALID ( net , IPPROTO_DCCP ) ) nf_log_packet ( net , pf , 0 , skb , NULL , NULL , NULL , \"nf_ct_dccp:<S2SV_blank>invalid<S2SV_blank>packet<S2SV_blank>ignored<S2SV_blank>\" ) ; return NF_ACCEPT ; case CT_DCCP_INVALID : spin_unlock_bh ( & ct -> lock ) ; if ( LOG_INVALID ( net , IPPROTO_DCCP ) ) nf_log_packet ( net , pf , 0 , skb , NULL , NULL , NULL , \"nf_ct_dccp:<S2SV_blank>invalid<S2SV_blank>state<S2SV_blank>transition<S2SV_blank>\" ) ; return - NF_ACCEPT ; } ct -> proto . dccp . last_dir = dir ; ct -> proto . dccp . last_pkt = type ; ct -> proto . dccp . state = new_state ; spin_unlock_bh ( & ct -> lock ) ; if ( new_state != old_state ) nf_conntrack_event_cache ( IPCT_PROTOINFO , ct ) ; nf_ct_refresh_acct ( ct , ctinfo , skb , timeouts [ new_state ] ) ; return NF_ACCEPT ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) , & _dh <S2SV_ModEnd> ) ; BUG_ON\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4646\n\n```\nCWE-20 <S2SV_StartBug> static int read_fragment_table ( long long * directory_table_end ) <S2SV_EndBug> { int res , i ; <S2SV_StartBug> int bytes = SQUASHFS_FRAGMENT_BYTES ( sBlk . s . fragments ) ; <S2SV_EndBug> <S2SV_StartBug> int indexes = SQUASHFS_FRAGMENT_INDEXES ( sBlk . s . fragments ) ; <S2SV_EndBug> long long fragment_table_index [ indexes ] ; TRACE ( \"read_fragment_table:<S2SV_blank>%d<S2SV_blank>fragments,<S2SV_blank>reading<S2SV_blank>%d<S2SV_blank>fragment<S2SV_blank>indexes<S2SV_blank>\" \"from<S2SV_blank>0x%llx\\\\n\" , sBlk . s . fragments , indexes , sBlk . s . fragment_table_start ) ; <S2SV_StartBug> if ( sBlk . s . fragments == 0 ) { <S2SV_EndBug> * directory_table_end = sBlk . s . fragment_table_start ; return TRUE ; } fragment_table = malloc ( bytes ) ; if ( fragment_table == NULL ) EXIT_UNSQUASH ( \"read_fragment_table:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>\" \"fragment<S2SV_blank>table\\\\n\" ) ; res = read_fs_bytes ( fd , sBlk . s . fragment_table_start , <S2SV_StartBug> SQUASHFS_FRAGMENT_INDEX_BYTES ( sBlk . s . fragments ) , <S2SV_EndBug> fragment_table_index ) ; if ( res == FALSE ) { ERROR ( \"read_fragment_table:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>fragment<S2SV_blank>table<S2SV_blank>\" \"index\\\\n\" ) ; return FALSE ; } SQUASHFS_INSWAP_FRAGMENT_INDEXES ( fragment_table_index , indexes ) ; for ( i = 0 ; i < indexes ; i ++ ) { int expected = ( i + 1 ) != indexes ? SQUASHFS_METADATA_SIZE : bytes & ( SQUASHFS_METADATA_SIZE - 1 ) ; int length = read_block ( fd , fragment_table_index [ i ] , NULL , expected , ( ( char * ) fragment_table ) + ( i * SQUASHFS_METADATA_SIZE ) ) ; TRACE ( \"Read<S2SV_blank>fragment<S2SV_blank>table<S2SV_blank>block<S2SV_blank>%d,<S2SV_blank>from<S2SV_blank>0x%llx,<S2SV_blank>length<S2SV_blank>%d\\\\n\" , i , fragment_table_index [ i ] , length ) ; if ( length == FALSE ) { ERROR ( \"read_fragment_table:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>fragment<S2SV_blank>\" \"table<S2SV_blank>index\\\\n\" ) ; return FALSE ; } } for ( i = 0 ; i < sBlk . s . fragments ; i ++ ) SQUASHFS_INSWAP_FRAGMENT_ENTRY ( & fragment_table [ i ] ) ; <S2SV_StartBug> * directory_table_end = fragment_table_index [ 0 ] ; <S2SV_EndBug> return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long long * table_start <S2SV_ModEnd> ) { int <S2SV_ModStart> , i ; long long <S2SV_ModEnd> bytes = SQUASHFS_FRAGMENT_BYTES <S2SV_ModStart> = SQUASHFS_FRAGMENT_BYTES ( ( long long ) <S2SV_ModStart> = SQUASHFS_FRAGMENT_INDEXES ( ( long long ) sBlk . s . fragments ) ; int length = SQUASHFS_FRAGMENT_INDEX_BYTES ( ( long long ) sBlk . s . fragments ) ; long long * fragment_table_index ; if ( length != ( * table_start - sBlk . s . fragment_table_start ) ) { ERROR ( \"read_fragment_table:<S2SV_blank>Bad<S2SV_blank>fragment<S2SV_blank>count<S2SV_blank>in<S2SV_blank>super<S2SV_blank>block\\\\n\" ) ; return FALSE ; } <S2SV_ModEnd> TRACE ( \"read_fragment_table:<S2SV_blank>%d<S2SV_blank>fragments,<S2SV_blank>reading<S2SV_blank>%d<S2SV_blank>fragment<S2SV_blank>indexes<S2SV_blank>\" <S2SV_ModStart> fragment_table_start ) ; fragment_table_index = alloc_index_table ( indexes ) ; <S2SV_ModEnd> fragment_table = malloc <S2SV_ModStart> . fragment_table_start , length <S2SV_ModEnd> , fragment_table_index ) <S2SV_ModStart> ) ; * table_start <S2SV_ModEnd> = fragment_table_index [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9388\n\n```\nCWE-000 static int ras_getcmap ( jas_stream_t * in , ras_hdr_t * hdr , ras_cmap_t * cmap ) { int i ; int j ; int x ; int c ; int numcolors ; int actualnumcolors ; switch ( hdr -> maptype ) { case RAS_MT_NONE : break ; case RAS_MT_EQUALRGB : { jas_eprintf ( \"warning:<S2SV_blank>palettized<S2SV_blank>images<S2SV_blank>not<S2SV_blank>fully<S2SV_blank>supported\\\\n\" ) ; numcolors = 1 << hdr -> depth ; <S2SV_StartBug> assert ( numcolors <= RAS_CMAP_MAXSIZ ) ; <S2SV_EndBug> actualnumcolors = hdr -> maplength / 3 ; for ( i = 0 ; i < numcolors ; i ++ ) { cmap -> data [ i ] = 0 ; } if ( ( hdr -> maplength % 3 ) || hdr -> maplength < 0 || hdr -> maplength > 3 * numcolors ) { return - 1 ; } for ( i = 0 ; i < 3 ; i ++ ) { for ( j = 0 ; j < actualnumcolors ; j ++ ) { if ( ( c = jas_stream_getc ( in ) ) == EOF ) { return - 1 ; } x = 0 ; switch ( i ) { case 0 : x = RAS_RED ( c ) ; break ; case 1 : x = RAS_GREEN ( c ) ; break ; case 2 : x = RAS_BLUE ( c ) ; break ; } cmap -> data [ j ] |= x ; } } } break ; default : return - 1 ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> depth ; if ( numcolors > RAS_CMAP_MAXSIZ ) { return - 1 ; } <S2SV_ModEnd> actualnumcolors = hdr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0546\n\n```\nCWE-000 static int efind ( name ) char * name ; { static char efbuf [ 100 ] ; my_regex_t re ; <S2SV_StartBug> sprintf ( efbuf , \"REG_%s\" , name ) ; <S2SV_EndBug> assert ( strlen ( efbuf ) < sizeof ( efbuf ) ) ; re . re_endp = efbuf ; ( void ) my_regerror ( REG_ATOI , & re , efbuf , sizeof ( efbuf ) ) ; return ( atoi ( efbuf ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> my_regex_t re ; snprintf ( efbuf , sizeof ( efbuf ) <S2SV_ModEnd> , \"REG_%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-191(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14353\n\n```\nCWE-191 void imap_quote_string ( char * dest , size_t dlen , const char * src , bool quote_backtick ) { const char * quote = \"`\\\\\"\\\\\\\\\" ; if ( ! quote_backtick ) quote ++ ; char * pt = dest ; const char * s = src ; * pt ++ = \\'\"\\' ; dlen -= 2 ; for ( ; * s && dlen ; s ++ ) { if ( strchr ( quote , * s ) ) { <S2SV_StartBug> dlen -= 2 ; <S2SV_EndBug> if ( dlen == 0 ) break ; * pt ++ = '\\\\\\\\' ; * pt ++ = * s ; } else { * pt ++ = * s ; dlen -- ; } } * pt ++ = \\'\"\\' ; * pt = '\\\\0' ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( dlen < 2 ) break ; <S2SV_ModStart> dlen -= 2 <S2SV_ModEnd> ; * pt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5366\n\n```\nCWE-399 int udpv6_recvmsg ( struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_sock * inet = inet_sk ( sk ) ; struct sk_buff * skb ; unsigned int ulen , copied ; int peeked , off = 0 ; int err ; int is_udplite = IS_UDPLITE ( sk ) ; int is_udp4 ; bool slow ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len , addr_len ) ; if ( np -> rxpmtu && np -> rxopt . bits . rxpmtu ) return ipv6_recv_rxpmtu ( sk , msg , len , addr_len ) ; try_again : skb = __skb_recv_datagram ( sk , flags | ( noblock ? MSG_DONTWAIT : 0 ) , & peeked , & off , & err ) ; if ( ! skb ) goto out ; ulen = skb -> len - sizeof ( struct udphdr ) ; copied = len ; if ( copied > ulen ) copied = ulen ; else if ( copied < ulen ) msg -> msg_flags |= MSG_TRUNC ; is_udp4 = ( skb -> protocol == htons ( ETH_P_IP ) ) ; if ( copied < ulen || UDP_SKB_CB ( skb ) -> partial_cov ) { if ( udp_lib_checksum_complete ( skb ) ) goto csum_copy_err ; } if ( skb_csum_unnecessary ( skb ) ) err = skb_copy_datagram_msg ( skb , sizeof ( struct udphdr ) , msg , copied ) ; else { err = skb_copy_and_csum_datagram_msg ( skb , sizeof ( struct udphdr ) , msg ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( unlikely ( err ) ) { trace_kfree_skb ( skb , udpv6_recvmsg ) ; if ( ! peeked ) { atomic_inc ( & sk -> sk_drops ) ; if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } goto out_free ; } if ( ! peeked ) { if ( is_udp4 ) UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; else UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INDATAGRAMS , is_udplite ) ; } sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( msg -> msg_name ) { DECLARE_SOCKADDR ( struct sockaddr_in6 * , sin6 , msg -> msg_name ) ; sin6 -> sin6_family = AF_INET6 ; sin6 -> sin6_port = udp_hdr ( skb ) -> source ; sin6 -> sin6_flowinfo = 0 ; if ( is_udp4 ) { ipv6_addr_set_v4mapped ( ip_hdr ( skb ) -> saddr , & sin6 -> sin6_addr ) ; sin6 -> sin6_scope_id = 0 ; } else { sin6 -> sin6_addr = ipv6_hdr ( skb ) -> saddr ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , inet6_iif ( skb ) ) ; } * addr_len = sizeof ( * sin6 ) ; } if ( np -> rxopt . all ) ip6_datagram_recv_common_ctl ( sk , msg , skb ) ; if ( is_udp4 ) { if ( inet -> cmsg_flags ) ip_cmsg_recv ( msg , skb ) ; } else { if ( np -> rxopt . all ) ip6_datagram_recv_specific_ctl ( sk , msg , skb ) ; } err = copied ; if ( flags & MSG_TRUNC ) err = ulen ; out_free : skb_free_datagram_locked ( sk , skb ) ; out : return err ; csum_copy_err : slow = lock_sock_fast ( sk ) ; if ( ! skb_kill_datagram ( sk , skb , flags ) ) { if ( is_udp4 ) { UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } else { UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_CSUMERRORS , is_udplite ) ; UDP6_INC_STATS_USER ( sock_net ( sk ) , UDP_MIB_INERRORS , is_udplite ) ; } } unlock_sock_fast ( sk , slow ) ; <S2SV_StartBug> if ( noblock ) <S2SV_EndBug> return - EAGAIN ; msg -> msg_flags &= ~ MSG_TRUNC ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> slow ) ; cond_resched ( ) <S2SV_ModEnd> ; msg ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3364\n\n```\nCWE-119 static __u8 * nci_extract_rf_params_nfcb_passive_poll ( struct nci_dev * ndev , struct rf_tech_specific_params_nfcb_poll * nfcb_poll , __u8 * data ) { <S2SV_StartBug> nfcb_poll -> sensb_res_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"sensb_res_len<S2SV_blank>%d\\\\n\" , nfcb_poll -> sensb_res_len ) ; memcpy ( nfcb_poll -> sensb_res , data , nfcb_poll -> sensb_res_len ) ; data += nfcb_poll -> sensb_res_len ; return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sensb_res_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , NFC_SENSB_RES_MAXSIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4163\n\n```\nCWE-399 int ip6_append_data ( struct sock * sk , int getfrag ( void * from , char * to , int offset , int len , int odd , struct sk_buff * skb ) , void * from , int length , int transhdrlen , int hlimit , int tclass , struct ipv6_txoptions * opt , struct flowi6 * fl6 , struct rt6_info * rt , unsigned int flags , int dontfrag ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct inet_cork * cork ; struct sk_buff * skb , * skb_prev = NULL ; <S2SV_StartBug> unsigned int maxfraglen , fragheaderlen ; <S2SV_EndBug> int exthdrlen ; int dst_exthdrlen ; <S2SV_StartBug> int hh_len ; <S2SV_EndBug> int mtu ; int copy ; int err ; int offset = 0 ; __u8 tx_flags = 0 ; if ( flags & MSG_PROBE ) return 0 ; cork = & inet -> cork . base ; if ( skb_queue_empty ( & sk -> sk_write_queue ) ) { if ( opt ) { if ( WARN_ON ( np -> cork . opt ) ) return - EINVAL ; np -> cork . opt = kzalloc ( opt -> tot_len , sk -> sk_allocation ) ; if ( unlikely ( np -> cork . opt == NULL ) ) return - ENOBUFS ; np -> cork . opt -> tot_len = opt -> tot_len ; np -> cork . opt -> opt_flen = opt -> opt_flen ; np -> cork . opt -> opt_nflen = opt -> opt_nflen ; np -> cork . opt -> dst0opt = ip6_opt_dup ( opt -> dst0opt , sk -> sk_allocation ) ; if ( opt -> dst0opt && ! np -> cork . opt -> dst0opt ) return - ENOBUFS ; np -> cork . opt -> dst1opt = ip6_opt_dup ( opt -> dst1opt , sk -> sk_allocation ) ; if ( opt -> dst1opt && ! np -> cork . opt -> dst1opt ) return - ENOBUFS ; np -> cork . opt -> hopopt = ip6_opt_dup ( opt -> hopopt , sk -> sk_allocation ) ; if ( opt -> hopopt && ! np -> cork . opt -> hopopt ) return - ENOBUFS ; np -> cork . opt -> srcrt = ip6_rthdr_dup ( opt -> srcrt , sk -> sk_allocation ) ; if ( opt -> srcrt && ! np -> cork . opt -> srcrt ) return - ENOBUFS ; } dst_hold ( & rt -> dst ) ; cork -> dst = & rt -> dst ; inet -> cork . fl . u . ip6 = * fl6 ; np -> cork . hop_limit = hlimit ; np -> cork . tclass = tclass ; if ( rt -> dst . flags & DST_XFRM_TUNNEL ) mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( & rt -> dst ) ; else mtu = np -> pmtudisc == IPV6_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( rt -> dst . path ) ; if ( np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } cork -> fragsize = mtu ; if ( dst_allfrag ( rt -> dst . path ) ) cork -> flags |= IPCORK_ALLFRAG ; cork -> length = 0 ; exthdrlen = ( opt ? opt -> opt_flen : 0 ) ; length += exthdrlen ; transhdrlen += exthdrlen ; dst_exthdrlen = rt -> dst . header_len - rt -> rt6i_nfheader_len ; } else { rt = ( struct rt6_info * ) cork -> dst ; fl6 = & inet -> cork . fl . u . ip6 ; opt = np -> cork . opt ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; mtu = cork -> fragsize ; } hh_len = LL_RESERVED_SPACE ( rt -> dst . dev ) ; fragheaderlen = sizeof ( struct ipv6hdr ) + rt -> rt6i_nfheader_len + ( opt ? opt -> opt_nflen : 0 ) ; maxfraglen = ( ( mtu - fragheaderlen ) & ~ 7 ) + fragheaderlen - sizeof ( struct frag_hdr ) ; if ( mtu <= sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN ) { if ( cork -> length + length > sizeof ( struct ipv6hdr ) + IPV6_MAXPLEN - fragheaderlen ) { ipv6_local_error ( sk , EMSGSIZE , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } } if ( sk -> sk_type == SOCK_DGRAM ) sock_tx_timestamp ( sk , & tx_flags ) ; cork -> length += length ; if ( length > mtu ) { int proto = sk -> sk_protocol ; if ( dontfrag && ( proto == IPPROTO_UDP || proto == IPPROTO_RAW ) ) { ipv6_local_rxpmtu ( sk , fl6 , mtu - exthdrlen ) ; return - EMSGSIZE ; } if ( proto == IPPROTO_UDP && ( rt -> dst . dev -> features & NETIF_F_UFO ) ) { err = ip6_ufo_append_data ( sk , getfrag , from , length , hh_len , fragheaderlen , transhdrlen , mtu , flags , rt ) ; if ( err ) goto error ; return 0 ; } } if ( ( skb = skb_peek_tail ( & sk -> sk_write_queue ) ) == NULL ) goto alloc_new_skb ; while ( length > 0 ) { copy = ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - skb -> len ; if ( copy < length ) copy = maxfraglen - skb -> len ; if ( copy <= 0 ) { char * data ; unsigned int datalen ; unsigned int fraglen ; unsigned int fraggap ; unsigned int alloclen ; alloc_new_skb : if ( skb ) fraggap = skb -> len - maxfraglen ; else fraggap = 0 ; if ( skb == NULL || skb_prev == NULL ) ip6_append_data_mtu ( & mtu , & maxfraglen , <S2SV_StartBug> fragheaderlen , skb , rt ) ; <S2SV_EndBug> skb_prev = skb ; datalen = length + fraggap ; if ( datalen > ( cork -> length <= mtu && ! ( cork -> flags & IPCORK_ALLFRAG ) ? mtu : maxfraglen ) - fragheaderlen ) datalen = maxfraglen - fragheaderlen - rt -> dst . trailer_len ; if ( ( flags & MSG_MORE ) && ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) alloclen = mtu ; else alloclen = datalen + fragheaderlen ; alloclen += dst_exthdrlen ; if ( datalen != length + fraggap ) { datalen += rt -> dst . trailer_len ; } alloclen += rt -> dst . trailer_len ; fraglen = datalen + fragheaderlen ; alloclen += sizeof ( struct frag_hdr ) ; if ( transhdrlen ) { skb = sock_alloc_send_skb ( sk , alloclen + hh_len , ( flags & MSG_DONTWAIT ) , & err ) ; } else { skb = NULL ; if ( atomic_read ( & sk -> sk_wmem_alloc ) <= 2 * sk -> sk_sndbuf ) skb = sock_wmalloc ( sk , alloclen + hh_len , 1 , sk -> sk_allocation ) ; if ( unlikely ( skb == NULL ) ) err = - ENOBUFS ; else { tx_flags = 0 ; } } if ( skb == NULL ) goto error ; skb -> ip_summed = CHECKSUM_NONE ; skb -> csum = 0 ; skb_reserve ( skb , hh_len + sizeof ( struct frag_hdr ) + dst_exthdrlen ) ; if ( sk -> sk_type == SOCK_DGRAM ) skb_shinfo ( skb ) -> tx_flags = tx_flags ; data = skb_put ( skb , fraglen ) ; skb_set_network_header ( skb , exthdrlen ) ; data += fragheaderlen ; skb -> transport_header = ( skb -> network_header + fragheaderlen ) ; if ( fraggap ) { skb -> csum = skb_copy_and_csum_bits ( skb_prev , maxfraglen , data + transhdrlen , fraggap , 0 ) ; skb_prev -> csum = csum_sub ( skb_prev -> csum , skb -> csum ) ; data += fraggap ; pskb_trim_unique ( skb_prev , maxfraglen ) ; } copy = datalen - transhdrlen - fraggap ; if ( copy < 0 ) { err = - EINVAL ; kfree_skb ( skb ) ; goto error ; } else if ( copy > 0 && getfrag ( from , data + transhdrlen , offset , copy , fraggap , skb ) < 0 ) { err = - EFAULT ; kfree_skb ( skb ) ; goto error ; } offset += copy ; length -= datalen - fraggap ; transhdrlen = 0 ; exthdrlen = 0 ; dst_exthdrlen = 0 ; __skb_queue_tail ( & sk -> sk_write_queue , skb ) ; continue ; } if ( copy > length ) copy = length ; if ( ! ( rt -> dst . dev -> features & NETIF_F_SG ) ) { unsigned int off ; off = skb -> len ; if ( getfrag ( from , skb_put ( skb , copy ) , offset , copy , off , skb ) < 0 ) { __skb_trim ( skb , off ) ; err = - EFAULT ; goto error ; } } else { int i = skb_shinfo ( skb ) -> nr_frags ; struct page_frag * pfrag = sk_page_frag ( sk ) ; err = - ENOMEM ; if ( ! sk_page_frag_refill ( sk , pfrag ) ) goto error ; if ( ! skb_can_coalesce ( skb , i , pfrag -> page , pfrag -> offset ) ) { err = - EMSGSIZE ; if ( i == MAX_SKB_FRAGS ) goto error ; __skb_fill_page_desc ( skb , i , pfrag -> page , pfrag -> offset , 0 ) ; skb_shinfo ( skb ) -> nr_frags = ++ i ; get_page ( pfrag -> page ) ; } copy = min_t ( int , copy , pfrag -> size - pfrag -> offset ) ; if ( getfrag ( from , page_address ( pfrag -> page ) + pfrag -> offset , offset , copy , skb -> len , skb ) < 0 ) goto error_efault ; pfrag -> offset += copy ; skb_frag_size_add ( & skb_shinfo ( skb ) -> frags [ i - 1 ] , copy ) ; skb -> len += copy ; skb -> data_len += copy ; skb -> truesize += copy ; atomic_add ( copy , & sk -> sk_wmem_alloc ) ; } offset += copy ; length -= copy ; } return 0 ; error_efault : err = - EFAULT ; error : cork -> length -= length ; IP6_INC_STATS ( sock_net ( sk ) , rt -> rt6i_idev , IPSTATS_MIB_OUTDISCARDS ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> maxfraglen , fragheaderlen , mtu <S2SV_ModStart> ; int hh_len <S2SV_ModEnd> ; int copy <S2SV_ModStart> skb , rt , np -> pmtudisc == IPV6_PMTUDISC_PROBE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010317\n\n```\nCWE-665 int ParseCaffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { <S2SV_StartBug> uint32_t chan_chunk = 0 , channel_layout = 0 , bcount ; <S2SV_EndBug> unsigned char * channel_identities = NULL ; unsigned char * channel_reorder = NULL ; int64_t total_samples = 0 , infilesize ; CAFFileHeader caf_file_header ; CAFChunkHeader caf_chunk_header ; CAFAudioFormat caf_audio_format ; int i ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & caf_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & caf_file_header ) + 4 , sizeof ( CAFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( CAFFileHeader ) - 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_file_header , sizeof ( CAFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_file_header , CAFFileHeaderFormat ) ; if ( caf_file_header . mFileVersion != 1 ) { error_line ( \"%s:<S2SV_blank>can\\'t<S2SV_blank>handle<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>.CAF<S2SV_blank>files!\" , infilename , caf_file_header . mFileVersion ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & caf_chunk_header , sizeof ( CAFChunkHeader ) , & bcount ) || bcount != sizeof ( CAFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_chunk_header , sizeof ( CAFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & caf_chunk_header , CAFChunkHeaderFormat ) ; if ( ! strncmp ( caf_chunk_header . mChunkType , \"desc\" , 4 ) ) { int supported = TRUE ; if ( caf_chunk_header . mChunkSize != sizeof ( CAFAudioFormat ) || ! DoReadFile ( infile , & caf_audio_format , ( uint32_t ) caf_chunk_header . mChunkSize , & bcount ) || bcount != caf_chunk_header . mChunkSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & caf_audio_format , ( uint32_t ) caf_chunk_header . mChunkSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } <S2SV_StartBug> WavpackBigEndianToNative ( & caf_audio_format , CAFAudioFormatFormat ) ; <S2SV_EndBug> if ( debug_logging_mode ) { char formatstr [ 5 ] ; memcpy ( formatstr , caf_audio_format . mFormatID , 4 ) ; formatstr [ 4 ] = 0 ; error_line ( \"format<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>flags<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>sampling<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%g\" , formatstr , caf_audio_format . mFormatFlags , caf_audio_format . mSampleRate ) ; error_line ( \"packet<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>and<S2SV_blank>%d<S2SV_blank>frames\" , caf_audio_format . mBytesPerPacket , caf_audio_format . mFramesPerPacket ) ; error_line ( \"channels<S2SV_blank>per<S2SV_blank>frame<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>bits<S2SV_blank>per<S2SV_blank>channel<S2SV_blank>=<S2SV_blank>%d\" , caf_audio_format . mChannelsPerFrame , caf_audio_format . mBitsPerChannel ) ; } if ( strncmp ( caf_audio_format . mFormatID , \"lpcm\" , 4 ) || ( caf_audio_format . mFormatFlags & ~ 3 ) ) supported = FALSE ; else if ( caf_audio_format . mSampleRate < 1.0 || caf_audio_format . mSampleRate > 16777215.0 || caf_audio_format . mSampleRate != floor ( caf_audio_format . mSampleRate ) ) supported = FALSE ; else if ( ! caf_audio_format . mChannelsPerFrame || caf_audio_format . mChannelsPerFrame > 256 ) supported = FALSE ; else if ( caf_audio_format . mBitsPerChannel < 1 || caf_audio_format . mBitsPerChannel > 32 || ( ( caf_audio_format . mFormatFlags & CAF_FORMAT_FLOAT ) && caf_audio_format . mBitsPerChannel != 32 ) ) supported = FALSE ; else if ( caf_audio_format . mFramesPerPacket != 1 || caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame < ( caf_audio_format . mBitsPerChannel + 7 ) / 8 || caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame > 4 || caf_audio_format . mBytesPerPacket % caf_audio_format . mChannelsPerFrame ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.CAF<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } config -> bytes_per_sample = caf_audio_format . mBytesPerPacket / caf_audio_format . mChannelsPerFrame ; config -> float_norm_exp = ( caf_audio_format . mFormatFlags & CAF_FORMAT_FLOAT ) ? 127 : 0 ; config -> bits_per_sample = caf_audio_format . mBitsPerChannel ; config -> num_channels = caf_audio_format . mChannelsPerFrame ; config -> sample_rate = ( int ) caf_audio_format . mSampleRate ; if ( ! ( caf_audio_format . mFormatFlags & CAF_FORMAT_LITTLE_ENDIAN ) && config -> bytes_per_sample > 1 ) config -> qmode |= QMODE_BIG_ENDIAN ; if ( config -> bytes_per_sample == 1 ) config -> qmode |= QMODE_SIGNED_BYTES ; if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>%s-endian<S2SV_blank>floating<S2SV_blank>point\" , ( config -> qmode & QMODE_BIG_ENDIAN ) ? \"big\" : \"little\" ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>%s-endian<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , ( config -> qmode & QMODE_BIG_ENDIAN ) ? \"big\" : \"little\" , config -> bytes_per_sample ) ; } } else if ( ! strncmp ( caf_chunk_header . mChunkType , \"chan\" , 4 ) ) { CAFChannelLayout * caf_channel_layout ; if ( caf_chunk_header . mChunkSize < 0 || caf_chunk_header . mChunkSize > 1024 || caf_chunk_header . mChunkSize < sizeof ( CAFChannelLayout ) ) { error_line ( \"this<S2SV_blank>.CAF<S2SV_blank>file<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>\\'chan\\'<S2SV_blank>chunk!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"\\'chan\\'<S2SV_blank>chunk<S2SV_blank>is<S2SV_blank>%d<S2SV_blank>bytes\" , ( int ) caf_chunk_header . mChunkSize ) ; caf_channel_layout = malloc ( ( size_t ) caf_chunk_header . mChunkSize ) ; if ( ! DoReadFile ( infile , caf_channel_layout , ( uint32_t ) caf_chunk_header . mChunkSize , & bcount ) || bcount != caf_chunk_header . mChunkSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , caf_channel_layout , ( uint32_t ) caf_chunk_header . mChunkSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( caf_channel_layout , CAFChannelLayoutFormat ) ; chan_chunk = 1 ; if ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { error_line ( \"this<S2SV_blank>CAF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } switch ( caf_channel_layout -> mChannelLayoutTag ) { case kCAFChannelLayoutTag_UseChannelDescriptions : { CAFChannelDescription * descriptions = ( CAFChannelDescription * ) ( caf_channel_layout + 1 ) ; int num_descriptions = caf_channel_layout -> mNumberChannelDescriptions ; int label , cindex = 0 , idents = 0 ; if ( caf_chunk_header . mChunkSize != sizeof ( CAFChannelLayout ) + sizeof ( CAFChannelDescription ) * num_descriptions || num_descriptions != config -> num_channels ) { error_line ( \"channel<S2SV_blank>descriptions<S2SV_blank>in<S2SV_blank>\\'chan\\'<S2SV_blank>chunk<S2SV_blank>are<S2SV_blank>the<S2SV_blank>wrong<S2SV_blank>size!\" ) ; free ( caf_channel_layout ) ; return WAVPACK_SOFT_ERROR ; } if ( num_descriptions >= 256 ) { error_line ( \"%d<S2SV_blank>channel<S2SV_blank>descriptions<S2SV_blank>is<S2SV_blank>more<S2SV_blank>than<S2SV_blank>we<S2SV_blank>can<S2SV_blank>handle...ignoring!\" ) ; break ; } channel_reorder = malloc ( num_descriptions ) ; memset ( channel_reorder , - 1 , num_descriptions ) ; channel_identities = malloc ( num_descriptions + 1 ) ; for ( i = 0 ; i < num_descriptions ; ++ i ) { WavpackBigEndianToNative ( descriptions + i , CAFChannelDescriptionFormat ) ; if ( debug_logging_mode ) error_line ( \"chan<S2SV_blank>%d<S2SV_blank>--><S2SV_blank>%d\" , i + 1 , descriptions [ i ] . mChannelLabel ) ; } for ( label = 1 ; label <= 18 ; ++ label ) for ( i = 0 ; i < num_descriptions ; ++ i ) if ( descriptions [ i ] . mChannelLabel == label ) { config -> channel_mask |= 1 << ( label - 1 ) ; channel_reorder [ i ] = cindex ++ ; break ; } for ( i = 0 ; i < num_descriptions ; ++ i ) if ( channel_reorder [ i ] == ( unsigned char ) - 1 ) { uint32_t clabel = descriptions [ i ] . mChannelLabel ; if ( clabel == 0 || clabel == 0xffffffff || clabel == 100 ) channel_identities [ idents ++ ] = 0xff ; else if ( ( clabel >= 33 && clabel <= 44 ) || ( clabel >= 200 && clabel <= 207 ) || ( clabel >= 301 && clabel <= 305 ) ) channel_identities [ idents ++ ] = clabel >= 301 ? clabel - 80 : clabel ; else { error_line ( \"warning:<S2SV_blank>unknown<S2SV_blank>channel<S2SV_blank>descriptions<S2SV_blank>label:<S2SV_blank>%d\" , clabel ) ; channel_identities [ idents ++ ] = 0xff ; } channel_reorder [ i ] = cindex ++ ; } for ( i = 0 ; i < num_descriptions ; ++ i ) if ( channel_reorder [ i ] != i ) break ; if ( i == num_descriptions ) { free ( channel_reorder ) ; channel_reorder = NULL ; } else { config -> qmode |= QMODE_REORDERED_CHANS ; channel_layout = num_descriptions ; } if ( ! idents ) { free ( channel_identities ) ; channel_identities = NULL ; } else channel_identities [ idents ] = 0 ; if ( debug_logging_mode ) { error_line ( \"layout_tag<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>so<S2SV_blank>generated<S2SV_blank>bitmap<S2SV_blank>of<S2SV_blank>0x%08x<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>descriptions,<S2SV_blank>%d<S2SV_blank>non-MS\" , caf_channel_layout -> mChannelLayoutTag , config -> channel_mask , caf_channel_layout -> mNumberChannelDescriptions , idents ) ; if ( channel_reorder && num_descriptions <= 8 ) { char reorder_string [ ] = \"12345678\" ; for ( i = 0 ; i < num_descriptions ; ++ i ) reorder_string [ i ] = channel_reorder [ i ] + '1' ; reorder_string [ i ] = 0 ; error_line ( \"reordering<S2SV_blank>string<S2SV_blank>=<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , reorder_string ) ; } } } break ; case kCAFChannelLayoutTag_UseChannelBitmap : config -> channel_mask = caf_channel_layout -> mChannelBitmap ; if ( debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>so<S2SV_blank>using<S2SV_blank>supplied<S2SV_blank>bitmap<S2SV_blank>of<S2SV_blank>0x%08x\" , caf_channel_layout -> mChannelLayoutTag , caf_channel_layout -> mChannelBitmap ) ; break ; default : for ( i = 0 ; i < NUM_LAYOUTS ; ++ i ) if ( caf_channel_layout -> mChannelLayoutTag == layouts [ i ] . mChannelLayoutTag ) { config -> channel_mask = layouts [ i ] . mChannelBitmap ; channel_layout = layouts [ i ] . mChannelLayoutTag ; if ( layouts [ i ] . mChannelReorder ) { channel_reorder = ( unsigned char * ) strdup ( layouts [ i ] . mChannelReorder ) ; config -> qmode |= QMODE_REORDERED_CHANS ; } if ( layouts [ i ] . mChannelIdentities ) channel_identities = ( unsigned char * ) strdup ( layouts [ i ] . mChannelIdentities ) ; if ( debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>0x%08x<S2SV_blank>found<S2SV_blank>in<S2SV_blank>table,<S2SV_blank>bitmap<S2SV_blank>=<S2SV_blank>0x%08x,<S2SV_blank>reorder<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>identities<S2SV_blank>=<S2SV_blank>%s\" , channel_layout , config -> channel_mask , channel_reorder ? \"yes\" : \"no\" , channel_identities ? \"yes\" : \"no\" ) ; break ; } if ( i == NUM_LAYOUTS && debug_logging_mode ) error_line ( \"layout_tag<S2SV_blank>0x%08x<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>table...all<S2SV_blank>channels<S2SV_blank>unassigned\" , caf_channel_layout -> mChannelLayoutTag ) ; break ; } free ( caf_channel_layout ) ; } else if ( ! strncmp ( caf_chunk_header . mChunkType , \"data\" , 4 ) ) { uint32_t mEditCount ; <S2SV_StartBug> if ( ! DoReadFile ( infile , & mEditCount , sizeof ( mEditCount ) , & bcount ) || <S2SV_EndBug> bcount != sizeof ( mEditCount ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & mEditCount , sizeof ( mEditCount ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } if ( ( config -> qmode & QMODE_IGNORE_LENGTH ) || caf_chunk_header . mChunkSize == - 1 ) { config -> qmode |= QMODE_IGNORE_LENGTH ; if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / caf_audio_format . mBytesPerPacket ; else total_samples = - 1 ; } else { if ( infilesize && infilesize - caf_chunk_header . mChunkSize > 16777216 ) { error_line ( \".CAF<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>CAFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ( caf_chunk_header . mChunkSize - 4 ) % caf_audio_format . mBytesPerPacket ) { error_line ( \".CAF<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>data<S2SV_blank>chunk<S2SV_blank>size,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } total_samples = ( caf_chunk_header . mChunkSize - 4 ) / caf_audio_format . mBytesPerPacket ; if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.CAF<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } break ; } else { uint32_t bytes_to_copy = ( uint32_t ) caf_chunk_header . mChunkSize ; char * buff ; if ( caf_chunk_header . mChunkSize < 0 || caf_chunk_header . mChunkSize > 1048576 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.CAF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , caf_chunk_header . mChunkType [ 0 ] , caf_chunk_header . mChunkType [ 1 ] , caf_chunk_header . mChunkType [ 2 ] , caf_chunk_header . mChunkType [ 3 ] , caf_chunk_header . mChunkSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! chan_chunk && ! config -> channel_mask && config -> num_channels <= 2 && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) config -> channel_mask = 0x5 - config -> num_channels ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , channel_identities ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } if ( channel_identities ) free ( channel_identities ) ; if ( channel_layout || channel_reorder ) { if ( ! WavpackSetChannelLayout ( wpc , channel_layout , channel_reorder ) ) { error_line ( \"problem<S2SV_blank>with<S2SV_blank>setting<S2SV_blank>channel<S2SV_blank>layout<S2SV_blank>(should<S2SV_blank>not<S2SV_blank>happen)\" ) ; return WAVPACK_SOFT_ERROR ; } if ( channel_reorder ) free ( channel_reorder ) ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { uint32_t chan_chunk = 0 , desc_chunk <S2SV_ModStart> , CAFAudioFormatFormat ) ; desc_chunk = 1 <S2SV_ModStart> if ( ! desc_chunk || !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int cost_segmap ( int * segcounts , vp9_prob * probs ) { <S2SV_EndBug> const int c01 = segcounts [ 0 ] + segcounts [ 1 ] ; const int c23 = segcounts [ 2 ] + segcounts [ 3 ] ; const int c45 = segcounts [ 4 ] + segcounts [ 5 ] ; const int c67 = segcounts [ 6 ] + segcounts [ 7 ] ; const int c0123 = c01 + c23 ; const int c4567 = c45 + c67 ; int cost = c0123 * vp9_cost_zero ( probs [ 0 ] ) + c4567 * vp9_cost_one ( probs [ 0 ] ) ; if ( c0123 > 0 ) { cost += c01 * vp9_cost_zero ( probs [ 1 ] ) + c23 * vp9_cost_one ( probs [ 1 ] ) ; if ( c01 > 0 ) cost += segcounts [ 0 ] * vp9_cost_zero ( probs [ 3 ] ) + segcounts [ 1 ] * vp9_cost_one ( probs [ 3 ] ) ; if ( c23 > 0 ) cost += segcounts [ 2 ] * vp9_cost_zero ( probs [ 4 ] ) + segcounts [ 3 ] * vp9_cost_one ( probs [ 4 ] ) ; } if ( c4567 > 0 ) { cost += c45 * vp9_cost_zero ( probs [ 2 ] ) + c67 * vp9_cost_one ( probs [ 2 ] ) ; if ( c45 > 0 ) cost += segcounts [ 4 ] * vp9_cost_zero ( probs [ 5 ] ) + segcounts [ 5 ] * vp9_cost_one ( probs [ 5 ] ) ; if ( c67 > 0 ) cost += segcounts [ 6 ] * vp9_cost_zero ( probs [ 6 ] ) + segcounts [ 7 ] * vp9_cost_one ( probs [ 6 ] ) ; } return cost ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * segcounts , vpx_prob <S2SV_ModEnd> * probs )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void accumulate_frame_motion_stats ( VP8_COMP * cpi , FIRSTPASS_STATS * this_frame , double * this_frame_mv_in_out , double * mv_in_out_accumulator , double * abs_mv_in_out_accumulator , double * mv_ratio_accumulator ) { double this_frame_mvr_ratio ; double this_frame_mvc_ratio ; double motion_pct ; <S2SV_StartBug> motion_pct = this_frame -> pcnt_motion ; <S2SV_EndBug> * this_frame_mv_in_out = this_frame -> mv_in_out_count * motion_pct ; * mv_in_out_accumulator += this_frame -> mv_in_out_count * motion_pct ; * abs_mv_in_out_accumulator += fabs ( this_frame -> mv_in_out_count * motion_pct ) ; if ( motion_pct > 0.05 ) { this_frame_mvr_ratio = fabs ( this_frame -> mvr_abs ) / DOUBLE_DIVIDE_CHECK ( fabs ( this_frame -> MVr ) ) ; this_frame_mvc_ratio = fabs ( this_frame -> mvc_abs ) / DOUBLE_DIVIDE_CHECK ( fabs ( this_frame -> MVc ) ) ; * mv_ratio_accumulator += ( this_frame_mvr_ratio < this_frame -> mvr_abs ) ? ( this_frame_mvr_ratio * motion_pct ) : this_frame -> mvr_abs * motion_pct ; * mv_ratio_accumulator += ( this_frame_mvc_ratio < this_frame -> mvc_abs ) ? ( this_frame_mvc_ratio * motion_pct ) : this_frame -> mvc_abs * motion_pct ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> double motion_pct ; ( void ) cpi ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19044\n\n```\nCWE-59 static void fifo_open ( notify_fifo_t * fifo , int ( * script_exit ) ( thread_t * ) , const char * type ) { int ret ; int sav_errno ; if ( fifo -> name ) { sav_errno = 0 ; if ( ! ( ret = mkfifo ( fifo -> name , S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH ) ) ) fifo -> created_fifo = true ; else { sav_errno = errno ; if ( sav_errno != EEXIST ) log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>%snotify<S2SV_blank>fifo<S2SV_blank>%s\" , type , fifo -> name ) ; } if ( ! sav_errno || sav_errno == EEXIST ) { if ( fifo -> script ) notify_fifo_exec ( master , script_exit , fifo , fifo -> script ) ; <S2SV_StartBug> if ( ( fifo -> fd = open ( fifo -> name , O_RDWR | O_CLOEXEC | O_NONBLOCK ) ) == - 1 ) { <S2SV_EndBug> log_message ( LOG_INFO , \"Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%snotify<S2SV_blank>fifo<S2SV_blank>%s<S2SV_blank>-<S2SV_blank>errno<S2SV_blank>%d\" , type , fifo -> name , errno ) ; if ( fifo -> created_fifo ) { unlink ( fifo -> name ) ; fifo -> created_fifo = false ; } } } if ( fifo -> fd == - 1 ) { FREE ( fifo -> name ) ; fifo -> name = NULL ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> O_CLOEXEC | O_NONBLOCK | O_NOFOLLOW\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-10931\n\n```\nCWE-120 static int try_read_command_binary ( conn * c ) { if ( c -> rbytes < sizeof ( c -> binary_header ) ) { return 0 ; } else { memcpy ( & c -> binary_header , c -> rcurr , sizeof ( c -> binary_header ) ) ; protocol_binary_request_header * req ; req = & c -> binary_header ; if ( settings . verbose > 1 ) { int ii ; fprintf ( stderr , \"<%d<S2SV_blank>Read<S2SV_blank>binary<S2SV_blank>protocol<S2SV_blank>data:\" , c -> sfd ) ; for ( ii = 0 ; ii < sizeof ( req -> bytes ) ; ++ ii ) { if ( ii % 4 == 0 ) { fprintf ( stderr , \"\\\\n<%d<S2SV_blank><S2SV_blank><S2SV_blank>\" , c -> sfd ) ; } fprintf ( stderr , \"<S2SV_blank>0x%02x\" , req -> bytes [ ii ] ) ; } fprintf ( stderr , \"\\\\n\" ) ; } c -> binary_header = * req ; c -> binary_header . request . keylen = ntohs ( req -> request . keylen ) ; c -> binary_header . request . bodylen = ntohl ( req -> request . bodylen ) ; c -> binary_header . request . cas = ntohll ( req -> request . cas ) ; if ( c -> binary_header . request . magic != PROTOCOL_BINARY_REQ ) { if ( settings . verbose ) { fprintf ( stderr , \"Invalid<S2SV_blank>magic:<S2SV_blank><S2SV_blank>%x\\\\n\" , c -> binary_header . request . magic ) ; } conn_set_state ( c , conn_closing ) ; return - 1 ; } uint8_t extlen = c -> binary_header . request . extlen ; uint16_t keylen = c -> binary_header . request . keylen ; if ( c -> rbytes < keylen + extlen + sizeof ( c -> binary_header ) ) { return 0 ; } if ( ! resp_start ( c ) ) { conn_set_state ( c , conn_closing ) ; return - 1 ; } c -> cmd = c -> binary_header . request . opcode ; c -> keylen = c -> binary_header . request . keylen ; c -> opaque = c -> binary_header . request . opaque ; c -> cas = 0 ; c -> last_cmd_time = current_time ; <S2SV_StartBug> char extbuf [ sizeof ( c -> binary_header ) + BIN_MAX_EXTLEN ] ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( extbuf + sizeof ( c -> binary_header ) , c -> rcurr + sizeof ( c -> binary_header ) , extlen ) ; <S2SV_EndBug> c -> rbytes -= sizeof ( c -> binary_header ) + extlen + keylen ; c -> rcurr += sizeof ( c -> binary_header ) + extlen + keylen ; dispatch_bin_command ( c , extbuf ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) + BIN_MAX_EXTLEN + 1 <S2SV_ModStart> binary_header ) , extlen > BIN_MAX_EXTLEN ? BIN_MAX_EXTLEN :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7010\n\n```\nCWE-189 static void add_bytes_c ( uint8_t * dst , uint8_t * src , int w ) { long i ; <S2SV_StartBug> for ( i = 0 ; i <= w - sizeof ( long ) ; i += sizeof ( long ) ) { <S2SV_EndBug> long a = * ( long * ) ( src + i ) ; long b = * ( long * ) ( dst + i ) ; * ( long * ) ( dst + i ) = ( ( a & pb_7f ) + ( b & pb_7f ) ) ^ ( ( a ^ b ) & pb_80 ) ; } for ( ; i < w ; i ++ ) dst [ i + 0 ] += src [ i + 0 ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <= w - ( int )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2463\n\n```\nCWE-119 <S2SV_StartBug> void * H264SwDecMalloc ( u32 size ) <S2SV_EndBug> { <S2SV_StartBug> return malloc ( size ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( u32 size , u32 num ) { if ( size > UINT32_MAX / num ) { return NULL ; } <S2SV_ModEnd> return malloc ( <S2SV_ModStart> malloc ( size * num\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6196\n\n```\nCWE-835 static void feed_table_block_tag ( struct table * tbl , char * line , struct table_mode * mode , int indent , int cmd ) { int offset ; if ( mode -> indent_level <= 0 && indent == - 1 ) return ; if ( mode -> indent_level >= CHAR_MAX && indent == 1 ) return ; setwidth ( tbl , mode ) ; feed_table_inline_tag ( tbl , line , mode , - 1 ) ; clearcontentssize ( tbl , mode ) ; if ( indent == 1 ) { mode -> indent_level ++ ; if ( mode -> indent_level <= MAX_INDENT_LEVEL ) tbl -> indent += INDENT_INCR ; } else if ( indent == - 1 ) { mode -> indent_level -- ; if ( mode -> indent_level < MAX_INDENT_LEVEL ) tbl -> indent -= INDENT_INCR ; } <S2SV_StartBug> offset = tbl -> indent ; <S2SV_EndBug> if ( cmd == HTML_DT ) { if ( mode -> indent_level > 0 && mode -> indent_level <= MAX_INDENT_LEVEL ) offset -= INDENT_INCR ; <S2SV_StartBug> } <S2SV_EndBug> if ( tbl -> indent > 0 ) { check_minimum0 ( tbl , 0 ) ; addcontentssize ( tbl , offset ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> INDENT_INCR ; } if ( tbl -> indent < 0 ) tbl -> indent = 0 ; <S2SV_ModStart> -= INDENT_INCR ; if ( offset < 0 ) offset = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7854\n\n```\nCWE-125 static RList * r_bin_wasm_get_element_entries ( RBinWasmObj * bin , RBinWasmSection * sec ) { RList * ret = NULL ; RBinWasmElementEntry * ptr = NULL ; if ( ! ( ret = r_list_newf ( ( RListFree ) free ) ) ) { return NULL ; } ut8 * buf = bin -> buf -> buf + ( ut32 ) sec -> payload_data ; <S2SV_StartBug> ut32 len = sec -> payload_len ; <S2SV_EndBug> ut32 count = sec -> count ; ut32 i = 0 , r = 0 ; <S2SV_StartBug> while ( i < len && r < count ) { <S2SV_EndBug> if ( ! ( ptr = R_NEW0 ( RBinWasmElementEntry ) ) ) { return ret ; } if ( ! ( consume_u32 ( buf + i , buf + len , & ptr -> index , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } if ( ! ( consume_init_expr ( buf + i , buf + len , R_BIN_WASM_END_OF_CODE , NULL , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } if ( ! ( consume_u32 ( buf + i , buf + len , & ptr -> num_elem , & i ) ) ) { <S2SV_StartBug> free ( ptr ) ; <S2SV_EndBug> return ret ; } ut32 j = 0 ; while ( i < len && j < ptr -> num_elem ) { ut32 e ; if ( ! ( consume_u32 ( buf + i , buf + len , & e , & i ) ) ) { free ( ptr ) ; return ret ; } } r_list_append ( ret , ptr ) ; r += 1 ; } return ret ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> payload_data ; int buflen = bin -> buf -> length - ( ut32 ) sec -> payload_data ; <S2SV_ModStart> i < len && len < buflen <S2SV_ModStart> ) ) { goto beach <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto beach <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ) { goto beach <S2SV_ModEnd> ; } ut32 <S2SV_ModStart> return ret ; beach : free ( ptr ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9620\n\n```\nCWE-399 public int magic_setparam ( struct magic_set * ms , int param , const void * val ) { switch ( param ) { case MAGIC_PARAM_INDIR_MAX : ms -> indir_max = * ( const size_t * ) val ; return 0 ; case MAGIC_PARAM_NAME_MAX : ms -> name_max = * ( const size_t * ) val ; return 0 ; case MAGIC_PARAM_ELF_PHNUM_MAX : ms -> elf_phnum_max = * ( const size_t * ) val ; return 0 ; case MAGIC_PARAM_ELF_SHNUM_MAX : ms -> elf_shnum_max = * ( const size_t * ) val ; return 0 ; <S2SV_StartBug> default : <S2SV_EndBug> errno = EINVAL ; return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; case MAGIC_PARAM_ELF_NOTES_MAX : ms -> elf_notes_max = * ( const size_t * ) val ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10756\n\n```\nCWE-416 static void nodeConstruct ( struct SaveNode * node , tr_variant const * v , bool sort_dicts ) { node -> isVisited = false ; node -> childIndex = 0 ; if ( sort_dicts && tr_variantIsDict ( v ) ) { size_t const n = v -> val . l . count ; struct KeyIndex * tmp = tr_new ( struct KeyIndex , n ) ; for ( size_t i = 0 ; i < n ; i ++ ) { tmp [ i ] . val = v -> val . l . vals + i ; tmp [ i ] . keystr = tr_quark_get_string ( tmp [ i ] . val -> key , NULL ) ; } qsort ( tmp , n , sizeof ( struct KeyIndex ) , compareKeyIndex ) ; <S2SV_StartBug> tr_variantInitDict ( & node -> sorted , n ) ; <S2SV_EndBug> for ( size_t i = 0 ; i < n ; ++ i ) { <S2SV_StartBug> node -> sorted . val . l . vals [ i ] = * tmp [ i ] . val ; <S2SV_EndBug> } <S2SV_StartBug> node -> sorted . val . l . count = n ; <S2SV_EndBug> tr_free ( tmp ) ; <S2SV_StartBug> node -> v = & node -> sorted ; <S2SV_EndBug> } else { <S2SV_StartBug> node -> v = v ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> compareKeyIndex ) ; node -> sorted = tr_new ( tr_variant , 1 ) ; tr_variantInitDict ( <S2SV_ModEnd> node -> sorted <S2SV_ModStart> node -> sorted -> <S2SV_ModEnd> val . l <S2SV_ModStart> node -> sorted -> <S2SV_ModEnd> val . l <S2SV_ModStart> tmp ) ; v = <S2SV_ModEnd> node -> sorted <S2SV_ModStart> { node -> sorted = NULL ; } node -> v = v ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_arg ( void * _o ) { arg_ty o = ( arg_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } result = PyType_GenericNew ( arg_type , NULL , NULL ) ; if ( ! result ) return NULL ; value = ast2obj_identifier ( o -> arg ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_arg , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> annotation ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_annotation , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> type_comment ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_type_comment , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> lineno ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_lineno , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> col_offset ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_col_offset , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } result\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15277\n\n```\nCWE-200 static Image * ReadGIFImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define BitSet ( byte , bit ) ( ( ( byte ) & ( bit ) ) == ( bit ) ) # define LSBFirstOrder ( x , y ) ( ( ( y ) << 8 ) | ( x ) ) Image * image , * meta_image ; int number_extensionss = 0 ; MagickBooleanType status ; RectangleInfo page ; register ssize_t i ; register unsigned char * p ; size_t delay , dispose , duration , global_colors , image_count , iterations , one ; ssize_t count , opacity ; unsigned char background , c , flag , * global_colormap , buffer [ 257 ] ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } count = ReadBlob ( image , 6 , buffer ) ; if ( ( count != 6 ) || ( ( LocaleNCompare ( ( char * ) buffer , \"GIF87\" , 5 ) != 0 ) && ( LocaleNCompare ( ( char * ) buffer , \"GIF89\" , 5 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; page . width = ReadBlobLSBShort ( image ) ; page . height = ReadBlobLSBShort ( image ) ; flag = ( unsigned char ) ReadBlobByte ( image ) ; background = ( unsigned char ) ReadBlobByte ( image ) ; c = ( unsigned char ) ReadBlobByte ( image ) ; one = 1 ; global_colors = one << ( ( ( size_t ) flag & 0x07 ) + 1 ) ; global_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( global_colors , 256 ) , 3UL * sizeof ( * global_colormap ) ) ; if ( global_colormap == ( unsigned char * ) NULL ) <S2SV_StartBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_EndBug> if ( BitSet ( ( int ) flag , 0x80 ) != 0 ) { count = ReadBlob ( image , ( size_t ) ( 3 * global_colors ) , global_colormap ) ; if ( count != ( ssize_t ) ( 3 * global_colors ) ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } } delay = 0 ; dispose = 0 ; duration = 0 ; iterations = 1 ; opacity = ( - 1 ) ; image_count = 0 ; meta_image = AcquireImage ( image_info , exception ) ; for ( ; ; ) { count = ReadBlob ( image , 1 , & c ) ; if ( count != 1 ) break ; if ( c == ( unsigned char ) ';' ) break ; if ( c == ( unsigned char ) '!' ) { count = ReadBlob ( image , 1 , & c ) ; if ( count != 1 ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadExtensionBlock\" ) ; } switch ( c ) { case 0xf9 : { while ( ReadBlobBlock ( image , buffer ) != 0 ) ; dispose = ( size_t ) ( buffer [ 0 ] >> 2 ) ; delay = ( size_t ) ( ( buffer [ 2 ] << 8 ) | buffer [ 1 ] ) ; if ( ( ssize_t ) ( buffer [ 0 ] & 0x01 ) == 0x01 ) opacity = ( ssize_t ) buffer [ 3 ] ; break ; } case 0xfe : { char * comments ; size_t length ; comments = AcquireString ( ( char * ) NULL ) ; for ( length = 0 ; ; length += count ) { count = ( ssize_t ) ReadBlobBlock ( image , buffer ) ; if ( count == 0 ) break ; buffer [ count ] = '\\\\0' ; ( void ) ConcatenateString ( & comments , ( const char * ) buffer ) ; } ( void ) SetImageProperty ( meta_image , \"comment\" , comments , exception ) ; comments = DestroyString ( comments ) ; break ; } case 0xff : { MagickBooleanType loop ; loop = MagickFalse ; if ( ReadBlobBlock ( image , buffer ) != 0 ) loop = LocaleNCompare ( ( char * ) buffer , \"NETSCAPE2.0\" , 11 ) == 0 ? MagickTrue : MagickFalse ; if ( loop != MagickFalse ) { while ( ReadBlobBlock ( image , buffer ) != 0 ) iterations = ( size_t ) ( ( buffer [ 2 ] << 8 ) | buffer [ 1 ] ) ; break ; } else { char name [ MagickPathExtent ] ; int block_length , info_length , reserved_length ; MagickBooleanType i8bim , icc , iptc , magick ; StringInfo * profile ; unsigned char * info ; icc = LocaleNCompare ( ( char * ) buffer , \"ICCRGBG1012\" , 11 ) == 0 ? MagickTrue : MagickFalse ; magick = LocaleNCompare ( ( char * ) buffer , \"ImageMagick\" , 11 ) == 0 ? MagickTrue : MagickFalse ; i8bim = LocaleNCompare ( ( char * ) buffer , \"MGK8BIM0000\" , 11 ) == 0 ? MagickTrue : MagickFalse ; iptc = LocaleNCompare ( ( char * ) buffer , \"MGKIPTC0000\" , 11 ) == 0 ? MagickTrue : MagickFalse ; number_extensionss ++ ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Reading<S2SV_blank>GIF<S2SV_blank>application<S2SV_blank>extension\" ) ; info = ( unsigned char * ) AcquireQuantumMemory ( 255UL , sizeof ( * info ) ) ; if ( info == ( unsigned char * ) NULL ) { meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } reserved_length = 255 ; for ( info_length = 0 ; ; ) { block_length = ( int ) ReadBlobBlock ( image , & info [ info_length ] ) ; if ( block_length == 0 ) break ; info_length += block_length ; if ( info_length > ( reserved_length - 255 ) ) { reserved_length += 4096 ; info = ( unsigned char * ) ResizeQuantumMemory ( info , ( size_t ) reserved_length , sizeof ( * info ) ) ; if ( info == ( unsigned char * ) NULL ) { meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } } } profile = BlobToStringInfo ( info , ( size_t ) info_length ) ; if ( profile == ( StringInfo * ) NULL ) { meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } if ( i8bim != MagickFalse ) ( void ) CopyMagickString ( name , \"8bim\" , sizeof ( name ) ) ; else if ( icc != MagickFalse ) ( void ) CopyMagickString ( name , \"icc\" , sizeof ( name ) ) ; else if ( iptc != MagickFalse ) ( void ) CopyMagickString ( name , \"iptc\" , sizeof ( name ) ) ; else if ( magick != MagickFalse ) { ( void ) CopyMagickString ( name , \"magick\" , sizeof ( name ) ) ; meta_image -> gamma = StringToDouble ( ( char * ) info + 6 , ( char * * ) NULL ) ; } else ( void ) FormatLocaleString ( name , sizeof ( name ) , \"gif:%.11s\" , buffer ) ; info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; if ( magick == MagickFalse ) ( void ) SetImageProfile ( meta_image , name , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>profile<S2SV_blank>name=%s\" , name ) ; } break ; } default : { while ( ReadBlobBlock ( image , buffer ) != 0 ) ; break ; } } } if ( c != ( unsigned char ) ',' ) continue ; if ( image_count != 0 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; } image_count ++ ; meta_image -> scene = image -> scene ; ( void ) CloneImageProperties ( image , meta_image ) ; DestroyImageProperties ( meta_image ) ; ( void ) CloneImageProfiles ( image , meta_image ) ; DestroyImageProfiles ( meta_image ) ; image -> storage_class = PseudoClass ; image -> compression = LZWCompression ; page . x = ( ssize_t ) ReadBlobLSBShort ( image ) ; page . y = ( ssize_t ) ReadBlobLSBShort ( image ) ; image -> columns = ReadBlobLSBShort ( image ) ; image -> rows = ReadBlobLSBShort ( image ) ; image -> depth = 8 ; flag = ( unsigned char ) ReadBlobByte ( image ) ; image -> interlace = BitSet ( ( int ) flag , 0x40 ) != 0 ? GIFInterlace : NoInterlace ; image -> colors = BitSet ( ( int ) flag , 0x80 ) == 0 ? global_colors : one << ( ( size_t ) ( flag & 0x07 ) + 1 ) ; if ( opacity >= ( ssize_t ) image -> colors ) opacity = ( - 1 ) ; image -> page . width = page . width ; image -> page . height = page . height ; image -> page . y = page . y ; image -> page . x = page . x ; image -> delay = delay ; image -> ticks_per_second = 100 ; image -> dispose = ( DisposeType ) dispose ; image -> iterations = iterations ; image -> alpha_trait = opacity >= 0 ? BlendPixelTrait : UndefinedPixelTrait ; delay = 0 ; dispose = 0 ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; } if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } if ( BitSet ( ( int ) flag , 0x80 ) == 0 ) { p = global_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( double ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ( double ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . blue = ( double ) ScaleCharToQuantum ( * p ++ ) ; if ( i == opacity ) { image -> colormap [ i ] . alpha = ( double ) TransparentAlpha ; image -> transparent_color = image -> colormap [ opacity ] ; } } image -> background_color = image -> colormap [ MagickMin ( ( ssize_t ) background , ( ssize_t ) image -> colors - 1 ) ] ; } else { unsigned char * colormap ; colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , 3 * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } count = ReadBlob ( image , ( 3 * image -> colors ) * sizeof ( * colormap ) , colormap ) ; if ( count != ( ssize_t ) ( 3 * image -> colors ) ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } p = colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( double ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ( double ) ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . blue = ( double ) ScaleCharToQuantum ( * p ++ ) ; if ( i == opacity ) image -> colormap [ i ] . alpha = ( double ) TransparentAlpha ; } colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; } if ( image -> gamma == 1.0 ) { for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) if ( IsPixelInfoGray ( image -> colormap + i ) == MagickFalse ) break ; ( void ) SetImageColorspace ( image , i == ( ssize_t ) image -> colors ? GRAYColorspace : RGBColorspace , exception ) ; } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image_info -> ping != MagickFalse ) status = PingGIFImage ( image , exception ) ; else status = DecodeImage ( image , opacity , exception ) ; if ( ( image_info -> ping == MagickFalse ) && ( status == MagickFalse ) ) { global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; meta_image = DestroyImage ( meta_image ) ; ThrowReaderException ( CorruptImageError , \"CorruptImage\" ) ; } duration += image -> delay * image -> iterations ; if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; opacity = ( - 1 ) ; status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) image -> scene - 1 , image -> scene ) ; if ( status == MagickFalse ) break ; } image -> duration = duration ; meta_image = DestroyImage ( meta_image ) ; global_colormap = ( unsigned char * ) RelinquishMagickMemory ( global_colormap ) ; if ( ( image -> columns == 0 ) || ( image -> rows == 0 ) ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) ResetMagickMemory ( global_colormap , 0 , 3 * MagickMax ( global_colors , 256 ) * sizeof ( * global_colormap )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6545\n\n```\nCWE-200 static int rfcomm_get_dev_list ( void __user * arg ) { struct rfcomm_dev * dev ; struct rfcomm_dev_list_req * dl ; struct rfcomm_dev_info * di ; int n = 0 , size , err ; u16 dev_num ; BT_DBG ( \"\" ) ; if ( get_user ( dev_num , ( u16 __user * ) arg ) ) return - EFAULT ; if ( ! dev_num || dev_num > ( PAGE_SIZE * 4 ) / sizeof ( * di ) ) return - EINVAL ; size = sizeof ( * dl ) + dev_num * sizeof ( * di ) ; <S2SV_StartBug> dl = kmalloc ( size , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! dl ) return - ENOMEM ; di = dl -> dev_info ; spin_lock ( & rfcomm_dev_lock ) ; list_for_each_entry ( dev , & rfcomm_dev_list , list ) { if ( test_bit ( RFCOMM_TTY_RELEASED , & dev -> flags ) ) continue ; ( di + n ) -> id = dev -> id ; ( di + n ) -> flags = dev -> flags ; ( di + n ) -> state = dev -> dlc -> state ; ( di + n ) -> channel = dev -> channel ; bacpy ( & ( di + n ) -> src , & dev -> src ) ; bacpy ( & ( di + n ) -> dst , & dev -> dst ) ; if ( ++ n >= dev_num ) break ; } spin_unlock ( & rfcomm_dev_lock ) ; dl -> dev_num = n ; size = sizeof ( * dl ) + n * sizeof ( * di ) ; err = copy_to_user ( arg , dl , size ) ; kfree ( dl ) ; return err ? - EFAULT : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dl = kzalloc <S2SV_ModEnd> ( size ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2694\n\n```\nCWE-264 static void otp_verify ( krb5_context context , krb5_data * req_pkt , krb5_kdc_req * request , krb5_enc_tkt_part * enc_tkt_reply , krb5_pa_data * pa , krb5_kdcpreauth_callbacks cb , krb5_kdcpreauth_rock rock , krb5_kdcpreauth_moddata moddata , krb5_kdcpreauth_verify_respond_fn respond , void * arg ) { krb5_keyblock * armor_key = NULL ; krb5_pa_otp_req * req = NULL ; struct request_state * rs ; krb5_error_code retval ; krb5_data d , plaintext ; char * config ; <S2SV_StartBug> enc_tkt_reply -> flags |= TKT_FLG_PRE_AUTH ; <S2SV_EndBug> armor_key = cb -> fast_armor ( context , rock ) ; if ( armor_key == NULL ) { retval = KRB5KDC_ERR_PREAUTH_FAILED ; com_err ( \"otp\" , retval , \"No<S2SV_blank>armor<S2SV_blank>key<S2SV_blank>found<S2SV_blank>when<S2SV_blank>verifying<S2SV_blank>padata\" ) ; goto error ; } d = make_data ( pa -> contents , pa -> length ) ; retval = decode_krb5_pa_otp_req ( & d , & req ) ; if ( retval != 0 ) { com_err ( \"otp\" , retval , \"Unable<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>OTP<S2SV_blank>request\" ) ; goto error ; } retval = decrypt_encdata ( context , armor_key , req , & plaintext ) ; if ( retval != 0 ) { com_err ( \"otp\" , retval , \"Unable<S2SV_blank>to<S2SV_blank>decrypt<S2SV_blank>nonce\" ) ; goto error ; } retval = nonce_verify ( context , armor_key , & plaintext ) ; if ( retval != 0 ) retval = timestamp_verify ( context , & plaintext ) ; krb5_free_data_contents ( context , & plaintext ) ; if ( retval != 0 ) { com_err ( \"otp\" , retval , \"Unable<S2SV_blank>to<S2SV_blank>verify<S2SV_blank>nonce<S2SV_blank>or<S2SV_blank>timestamp\" ) ; goto error ; } rs = k5alloc ( sizeof ( struct request_state ) , & retval ) ; if ( rs == NULL ) goto error ; rs -> arg = arg ; <S2SV_StartBug> rs -> respond = respond ; <S2SV_EndBug> retval = cb -> get_string ( context , rock , \"otp\" , & config ) ; if ( retval == 0 && config == NULL ) retval = KRB5_PREAUTH_FAILED ; if ( retval != 0 ) { free ( rs ) ; goto error ; } otp_state_verify ( ( otp_state * ) moddata , cb -> event_context ( context , rock ) , request -> client , config , req , on_response , rs ) ; cb -> free_string ( context , rock , config ) ; k5_free_pa_otp_req ( context , req ) ; return ; error : k5_free_pa_otp_req ( context , req ) ; ( * respond ) ( arg , retval , NULL , NULL , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * config ; <S2SV_ModEnd> armor_key = cb <S2SV_ModStart> respond = respond ; rs -> enc_tkt_reply = enc_tkt_reply\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18241\n\n```\nCWE-476 int create_flush_cmd_control ( struct f2fs_sb_info * sbi ) { dev_t dev = sbi -> sb -> s_bdev -> bd_dev ; struct flush_cmd_control * fcc ; int err = 0 ; if ( SM_I ( sbi ) -> fcc_info ) { fcc = SM_I ( sbi ) -> fcc_info ; goto init_thread ; } fcc = kzalloc ( sizeof ( struct flush_cmd_control ) , GFP_KERNEL ) ; if ( ! fcc ) return - ENOMEM ; atomic_set ( & fcc -> issued_flush , 0 ) ; atomic_set ( & fcc -> issing_flush , 0 ) ; init_waitqueue_head ( & fcc -> flush_wait_queue ) ; init_llist_head ( & fcc -> issue_list ) ; SM_I ( sbi ) -> fcc_info = fcc ; <S2SV_StartBug> init_thread : <S2SV_EndBug> fcc -> f2fs_issue_flush = kthread_run ( issue_flush_thread , sbi , \"f2fs_flush-%u:%u\" , MAJOR ( dev ) , MINOR ( dev ) ) ; if ( IS_ERR ( fcc -> f2fs_issue_flush ) ) { err = PTR_ERR ( fcc -> f2fs_issue_flush ) ; kfree ( fcc ) ; SM_I ( sbi ) -> fcc_info = NULL ; return err ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = fcc ; if ( ! test_opt ( sbi , FLUSH_MERGE ) ) return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void <S2SV_EndBug> byteSwap ( UWORD32 * buf , unsigned words ) { md5byte * p ; int i = 1 ; if ( * ( char * ) & i == 1 ) return ; p = ( md5byte * ) buf ; do { * buf ++ = ( UWORD32 ) ( ( unsigned ) p [ 3 ] << 8 | p [ 2 ] ) << 16 | ( ( unsigned ) p [ 1 ] << 8 | p [ 0 ] ) ; p += 4 ; } while ( -- words ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-31616\n\n```\nCWE-120 uint8_t ethereum_extractThorchainData ( const EthereumSignTx * msg , char * buffer ) { uint16_t offset = 4 + ( 5 * 32 ) ; int16_t len = msg -> data_length - offset ; <S2SV_StartBug> if ( msg -> has_data_length && len > 0 ) { <S2SV_EndBug> memcpy ( buffer , msg -> data_initial_chunk . bytes + offset , len ) ; <S2SV_StartBug> return len < 256 ? ( uint8_t ) len : 0 ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len > 0 && len < 256 <S2SV_ModStart> ) ; return <S2SV_ModEnd> ( uint8_t ) <S2SV_ModStart> uint8_t ) len <S2SV_ModEnd> ; } return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3152\n\n```\nCWE-284 static MYSQL * db_connect ( char * host , char * database , char * user , char * passwd ) { MYSQL * mysql ; if ( verbose ) fprintf ( stdout , \"Connecting<S2SV_blank>to<S2SV_blank>%s\\\\n\" , host ? host : \"localhost\" ) ; if ( ! ( mysql = mysql_init ( NULL ) ) ) return 0 ; if ( opt_compress ) mysql_options ( mysql , MYSQL_OPT_COMPRESS , NullS ) ; if ( opt_local_file ) mysql_options ( mysql , MYSQL_OPT_LOCAL_INFILE , ( char * ) & opt_local_file ) ; <S2SV_StartBug> # ifdef HAVE_OPENSSL <S2SV_EndBug> if ( opt_use_ssl ) { mysql_ssl_set ( mysql , opt_ssl_key , opt_ssl_cert , opt_ssl_ca , opt_ssl_capath , opt_ssl_cipher ) ; mysql_options ( mysql , MYSQL_OPT_SSL_CRL , opt_ssl_crl ) ; mysql_options ( mysql , MYSQL_OPT_SSL_CRLPATH , opt_ssl_crlpath ) ; } mysql_options ( mysql , MYSQL_OPT_SSL_VERIFY_SERVER_CERT , ( char * ) & opt_ssl_verify_server_cert ) ; # endif if ( opt_protocol ) mysql_options ( mysql , MYSQL_OPT_PROTOCOL , ( char * ) & opt_protocol ) ; if ( opt_bind_addr ) mysql_options ( mysql , MYSQL_OPT_BIND , opt_bind_addr ) ; # if defined ( _WIN32 ) && ! defined ( EMBEDDED_LIBRARY ) if ( shared_memory_base_name ) mysql_options ( mysql , MYSQL_SHARED_MEMORY_BASE_NAME , shared_memory_base_name ) ; # endif if ( opt_plugin_dir && * opt_plugin_dir ) mysql_options ( mysql , MYSQL_PLUGIN_DIR , opt_plugin_dir ) ; if ( opt_default_auth && * opt_default_auth ) mysql_options ( mysql , MYSQL_DEFAULT_AUTH , opt_default_auth ) ; mysql_options ( mysql , MYSQL_SET_CHARSET_NAME , default_charset ) ; mysql_options ( mysql , MYSQL_OPT_CONNECT_ATTR_RESET , 0 ) ; mysql_options4 ( mysql , MYSQL_OPT_CONNECT_ATTR_ADD , \"program_name\" , \"mysqlimport\" ) ; if ( ! ( mysql_real_connect ( mysql , host , user , passwd , database , opt_mysql_port , opt_mysql_unix_port , 0 ) ) ) { ignore_errors = 0 ; db_error ( mysql ) ; } mysql -> reconnect = 0 ; if ( verbose ) fprintf ( stdout , \"Selecting<S2SV_blank>database<S2SV_blank>%s\\\\n\" , database ) ; if ( mysql_select_db ( mysql , database ) ) { ignore_errors = 0 ; db_error ( mysql ) ; } return mysql ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> opt_local_file ) ; SSL_SET_OPTIONS ( mysql ) ; <S2SV_ModEnd> if ( opt_protocol\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6250\n\n```\nCWE-190 static int isoent_gen_joliet_identifier ( struct archive_write * a , struct isoent * isoent , struct idr * idr ) { struct iso9660 * iso9660 ; struct isoent * np ; unsigned char * p ; size_t l ; int r ; <S2SV_StartBug> int ffmax , parent_len ; <S2SV_EndBug> static const struct archive_rb_tree_ops rb_ops = { isoent_cmp_node_joliet , isoent_cmp_key_joliet } ; if ( isoent -> children . cnt == 0 ) return ( 0 ) ; iso9660 = a -> format_data ; if ( iso9660 -> opt . joliet == OPT_JOLIET_LONGNAME ) ffmax = 206 ; else ffmax = 128 ; <S2SV_StartBug> r = idr_start ( a , idr , isoent -> children . cnt , ffmax , 6 , 2 , & rb_ops ) ; <S2SV_EndBug> if ( r < 0 ) return ( r ) ; parent_len = 1 ; for ( np = isoent ; np -> parent != np ; np = np -> parent ) parent_len += np -> mb_len + 1 ; for ( np = isoent -> children . first ; np != NULL ; np = np -> chnext ) { unsigned char * dot ; int ext_off , noff , weight ; size_t lt ; <S2SV_StartBug> if ( ( int ) ( l = np -> file -> basename_utf16 . length ) > ffmax ) <S2SV_EndBug> l = ffmax ; p = malloc ( ( l + 1 ) * 2 ) ; if ( p == NULL ) { archive_set_error ( & a -> archive , ENOMEM , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>memory\" ) ; return ( ARCHIVE_FATAL ) ; } memcpy ( p , np -> file -> basename_utf16 . s , l ) ; p [ l ] = 0 ; p [ l + 1 ] = 0 ; np -> identifier = ( char * ) p ; lt = l ; dot = p + l ; weight = 0 ; while ( lt > 0 ) { if ( ! joliet_allowed_char ( p [ 0 ] , p [ 1 ] ) ) archive_be16enc ( p , 0x005F ) ; else if ( p [ 0 ] == 0 && p [ 1 ] == 0x2E ) dot = p ; p += 2 ; lt -= 2 ; } ext_off = ( int ) ( dot - ( unsigned char * ) np -> identifier ) ; np -> ext_off = ext_off ; np -> ext_len = ( int ) l - ext_off ; np -> id_len = ( int ) l ; <S2SV_StartBug> if ( ( int ) np -> file -> basename_utf16 . length > ffmax ) { <S2SV_EndBug> if ( archive_strncpy_l ( & iso9660 -> mbs , ( const char * ) np -> identifier , l , iso9660 -> sconv_from_utf16be ) != 0 && errno == ENOMEM ) { archive_set_error ( & a -> archive , errno , \"No<S2SV_blank>memory\" ) ; return ( ARCHIVE_FATAL ) ; } np -> mb_len = ( int ) iso9660 -> mbs . length ; if ( np -> mb_len != ( int ) np -> file -> basename . length ) weight = np -> mb_len ; } else np -> mb_len = ( int ) np -> file -> basename . length ; <S2SV_StartBug> if ( parent_len + np -> mb_len > 240 ) { <S2SV_EndBug> archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"The<S2SV_blank>regulation<S2SV_blank>of<S2SV_blank>Joliet<S2SV_blank>extensions;\" \"<S2SV_blank>A<S2SV_blank>length<S2SV_blank>of<S2SV_blank>a<S2SV_blank>full-pathname<S2SV_blank>of<S2SV_blank>`%s\\'<S2SV_blank>is<S2SV_blank>\" \"longer<S2SV_blank>than<S2SV_blank>240<S2SV_blank>bytes,<S2SV_blank>(p=%d,<S2SV_blank>b=%d)\" , archive_entry_pathname ( np -> file -> entry ) , ( int ) parent_len , ( int ) np -> mb_len ) ; return ( ARCHIVE_FATAL ) ; } <S2SV_StartBug> if ( ( int ) l == ffmax ) <S2SV_EndBug> noff = ext_off - 6 ; <S2SV_StartBug> else if ( ( int ) l == ffmax - 2 ) <S2SV_EndBug> noff = ext_off - 4 ; <S2SV_StartBug> else if ( ( int ) l == ffmax - 4 ) <S2SV_EndBug> noff = ext_off - 2 ; else noff = ext_off ; idr_register ( idr , np , weight , noff ) ; } idr_resolve ( idr , idr_set_num_beutf16 ) ; return ( ARCHIVE_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int r ; size_t <S2SV_ModEnd> ffmax , parent_len <S2SV_ModStart> . cnt , ( int ) <S2SV_ModStart> if ( ( <S2SV_ModEnd> l = np <S2SV_ModStart> ; if ( <S2SV_ModEnd> np -> file <S2SV_ModStart> if ( parent_len > 240 || <S2SV_ModEnd> np -> mb_len <S2SV_ModStart> mb_len > 240 || parent_len + np -> mb_len > 240 <S2SV_ModStart> } if ( <S2SV_ModEnd> l == ffmax <S2SV_ModStart> else if ( <S2SV_ModEnd> l == ffmax <S2SV_ModStart> else if ( <S2SV_ModEnd> l == ffmax\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_set_active_map ( VP8_COMP * cpi , unsigned char * map , unsigned int rows , unsigned int cols ) { if ( rows == cpi -> common . mb_rows && cols == cpi -> common . mb_cols ) { if ( map ) { <S2SV_StartBug> vpx_memcpy ( cpi -> active_map , map , rows * cols ) ; <S2SV_EndBug> cpi -> active_map_enabled = 1 ; } else cpi -> active_map_enabled = 0 ; return 0 ; } else { return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> map ) { memcpy <S2SV_ModEnd> ( cpi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9120\n\n```\nCWE-264 void ion_free ( struct ion_client * client , struct ion_handle * handle ) { <S2SV_StartBug> bool valid_handle ; <S2SV_EndBug> BUG_ON ( client != handle -> client ) ; mutex_lock ( & client -> lock ) ; <S2SV_StartBug> valid_handle = ion_handle_validate ( client , handle ) ; <S2SV_EndBug> if ( ! valid_handle ) { WARN ( 1 , \"%s:<S2SV_blank>invalid<S2SV_blank>handle<S2SV_blank>passed<S2SV_blank>to<S2SV_blank>free.\\\\n\" , __func__ ) ; mutex_unlock ( & client -> lock ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } mutex_unlock ( & client -> lock ) ; ion_handle_put ( handle ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> handle ) { <S2SV_ModEnd> BUG_ON ( client <S2SV_ModStart> lock ) ; ion_free_nolock <S2SV_ModEnd> ( client , <S2SV_ModStart> client , handle <S2SV_ModEnd> ) ; mutex_unlock <S2SV_ModStart> lock ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static void umount_tree ( struct mount * mnt , enum umount_tree_flags how ) { LIST_HEAD ( tmp_list ) ; struct mount * p ; if ( how & UMOUNT_PROPAGATE ) propagate_mount_unlock ( mnt ) ; for ( p = mnt ; p ; p = next_mnt ( p , mnt ) ) { p -> mnt . mnt_flags |= MNT_UMOUNT ; list_move ( & p -> mnt_list , & tmp_list ) ; } list_for_each_entry ( p , & tmp_list , mnt_list ) { list_del_init ( & p -> mnt_child ) ; } if ( how & UMOUNT_PROPAGATE ) propagate_umount ( & tmp_list ) ; while ( ! list_empty ( & tmp_list ) ) { <S2SV_StartBug> bool disconnect ; <S2SV_EndBug> p = list_first_entry ( & tmp_list , struct mount , mnt_list ) ; list_del_init ( & p -> mnt_expire ) ; list_del_init ( & p -> mnt_list ) ; <S2SV_StartBug> __touch_mnt_namespace ( p -> mnt_ns ) ; <S2SV_EndBug> p -> mnt_ns = NULL ; if ( how & UMOUNT_SYNC ) p -> mnt . mnt_flags |= MNT_SYNC_UMOUNT ; disconnect = disconnect_mount ( p , how ) ; pin_insert_group ( & p -> mnt_umount , & p -> mnt_parent -> mnt , disconnect ? & unmounted : NULL ) ; if ( mnt_has_parent ( p ) ) { mnt_add_count ( p -> mnt_parent , - 1 ) ; if ( ! disconnect ) { list_add_tail ( & p -> mnt_child , & p -> mnt_parent -> mnt_mounts ) ; } else { umount_mnt ( p ) ; } } change_mnt_propagation ( p , MS_PRIVATE ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { struct mnt_namespace * ns ; <S2SV_ModStart> mnt_list ) ; ns = p -> mnt_ns ; if ( ns ) { ns -> mounts -- ; __touch_mnt_namespace ( ns ) ; } <S2SV_ModEnd> p -> mnt_ns\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 <S2SV_StartBug> static void show_object ( struct object * object , struct strbuf * path , <S2SV_EndBug> <S2SV_StartBug> const char * last , void * data ) <S2SV_EndBug> { struct bitmap * base = data ; bitmap_set ( base , find_object_pos ( object -> oid . hash ) ) ; mark_as_seen ( object ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * object , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void tree_to_node ( void * data , BLOCK_SIZE bsize , variance_node * node ) { int i ; <S2SV_StartBug> switch ( bsize ) { <S2SV_EndBug> case BLOCK_64X64 : { v64x64 * vt = ( v64x64 * ) data ; node -> part_variances = & vt -> part_variances ; for ( i = 0 ; i < 4 ; i ++ ) node -> split [ i ] = & vt -> split [ i ] . part_variances . none ; break ; } case BLOCK_32X32 : { v32x32 * vt = ( v32x32 * ) data ; node -> part_variances = & vt -> part_variances ; for ( i = 0 ; i < 4 ; i ++ ) node -> split [ i ] = & vt -> split [ i ] . part_variances . none ; break ; } case BLOCK_16X16 : { v16x16 * vt = ( v16x16 * ) data ; node -> part_variances = & vt -> part_variances ; for ( i = 0 ; i < 4 ; i ++ ) node -> split [ i ] = & vt -> split [ i ] . part_variances . none ; break ; } case BLOCK_8X8 : { v8x8 * vt = ( v8x8 * ) data ; node -> part_variances = & vt -> part_variances ; for ( i = 0 ; i < 4 ; i ++ ) <S2SV_StartBug> node -> split [ i ] = & vt -> split [ i ] ; <S2SV_EndBug> break ; } default : { assert ( 0 ) ; <S2SV_StartBug> } <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int i ; node -> part_variances = NULL ; <S2SV_ModStart> [ i ] . part_variances . none ; break ; } case BLOCK_4X4 : { v4x4 * vt = ( v4x4 * ) data ; node -> part_variances = & vt -> part_variances ; for ( i = 0 ; i < 4 ; i ++ ) node -> split [ i ] = & vt -> split [ i ] <S2SV_ModStart> 0 ) ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2486\n\n```\nCWE-264 int rpc_type_of_NPNVariable ( int variable ) { int type ; switch ( variable ) { case NPNVjavascriptEnabledBool : case NPNVasdEnabledBool : case NPNVisOfflineBool : case NPNVSupportsXEmbedBool : <S2SV_StartBug> case NPNVSupportsWindowless : <S2SV_EndBug> type = RPC_TYPE_BOOLEAN ; break ; case NPNVToolkit : case NPNVnetscapeWindow : type = RPC_TYPE_UINT32 ; break ; case NPNVWindowNPObject : case NPNVPluginElementNPObject : type = RPC_TYPE_NP_OBJECT ; break ; default : type = RPC_ERROR_GENERIC ; break ; } return type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : case NPNVSupportsWindowless : case NPNVprivateModeBool : case NPNVsupportsAdvancedKeyHandling\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void copy_and_extend_plane ( const uint8_t * src , int src_pitch , uint8_t * dst , int dst_pitch , int w , int h , int extend_top , int extend_left , int extend_bottom , int extend_right ) { int i , linesize ; const uint8_t * src_ptr1 = src ; const uint8_t * src_ptr2 = src + w - 1 ; uint8_t * dst_ptr1 = dst - extend_left ; uint8_t * dst_ptr2 = dst + w ; for ( i = 0 ; i < h ; i ++ ) { <S2SV_StartBug> vpx_memset ( dst_ptr1 , src_ptr1 [ 0 ] , extend_left ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( dst_ptr1 + extend_left , src_ptr1 , w ) ; <S2SV_EndBug> vpx_memset ( dst_ptr2 , src_ptr2 [ 0 ] , extend_right ) ; src_ptr1 += src_pitch ; src_ptr2 += src_pitch ; dst_ptr1 += dst_pitch ; dst_ptr2 += dst_pitch ; } src_ptr1 = dst - extend_left ; src_ptr2 = dst + dst_pitch * ( h - 1 ) - extend_left ; dst_ptr1 = dst + dst_pitch * ( - extend_top ) - extend_left ; dst_ptr2 = dst + dst_pitch * ( h ) - extend_left ; linesize = extend_left + extend_right + w ; for ( i = 0 ; i < extend_top ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dst_ptr1 , src_ptr1 , linesize ) ; <S2SV_EndBug> dst_ptr1 += dst_pitch ; } for ( i = 0 ; i < extend_bottom ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dst_ptr2 , src_ptr2 , linesize ) ; <S2SV_EndBug> dst_ptr2 += dst_pitch ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( dst_ptr1 , <S2SV_ModStart> extend_left ) ; memcpy ( dst_ptr1 + extend_left , src_ptr1 , w ) ; memset <S2SV_ModEnd> ( dst_ptr2 , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dst_ptr1 , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dst_ptr2 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7274\n\n```\nCWE-476 RCMS * r_pkcs7_parse_cms ( const ut8 * buffer , ut32 length ) { RASN1Object * object ; RCMS * container ; if ( ! buffer || ! length ) { return NULL ; } container = R_NEW0 ( RCMS ) ; if ( ! container ) { return NULL ; } object = r_asn1_create_object ( buffer , length ) ; <S2SV_StartBug> if ( ! object || object -> list . length != 2 || ! object -> list . objects [ 0 ] || object -> list . objects [ 1 ] -> list . length != 1 ) { <S2SV_EndBug> r_asn1_free_object ( object ) ; free ( container ) ; return NULL ; } container -> contentType = r_asn1_stringify_oid ( object -> list . objects [ 0 ] -> sector , object -> list . objects [ 0 ] -> length ) ; r_pkcs7_parse_signeddata ( & container -> signedData , object -> list . objects [ 1 ] -> list . objects [ 0 ] ) ; r_asn1_free_object ( object ) ; return container ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> list . objects || ! object -> list . objects [ 0 ] || ! object -> list . objects [ 1 ] || <S2SV_ModEnd> object -> list\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 static int rawv6_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct sockaddr_in6 * sin6 = ( struct sockaddr_in6 * ) msg -> msg_name ; struct sk_buff * skb ; size_t copied ; int err ; if ( flags & MSG_OOB ) <S2SV_StartBug> return - EOPNOTSUPP ; <S2SV_EndBug> if ( addr_len ) * addr_len = sizeof ( * sin6 ) ; if ( flags & MSG_ERRQUEUE ) return ipv6_recv_error ( sk , msg , len ) ; if ( np -> rxpmtu && np -> rxopt . bits . rxpmtu ) return ipv6_recv_rxpmtu ( sk , msg , len ) ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( copied > len ) { copied = len ; msg -> msg_flags |= MSG_TRUNC ; } if ( skb_csum_unnecessary ( skb ) ) { err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; } else if ( msg -> msg_flags & MSG_TRUNC ) { if ( __skb_checksum_complete ( skb ) ) goto csum_copy_err ; err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; } else { err = skb_copy_and_csum_datagram_iovec ( skb , 0 , msg -> msg_iov ) ; if ( err == - EINVAL ) goto csum_copy_err ; } if ( err ) goto out_free ; if ( sin6 ) { sin6 -> sin6_family = AF_INET6 ; sin6 -> sin6_port = 0 ; sin6 -> sin6_addr = ipv6_hdr ( skb ) -> saddr ; sin6 -> sin6_flowinfo = 0 ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , <S2SV_StartBug> IP6CB ( skb ) -> iif ) ; <S2SV_EndBug> } sock_recv_ts_and_drops ( msg , sk , skb ) ; if ( np -> rxopt . all ) ip6_datagram_recv_ctl ( sk , msg , skb ) ; err = copied ; if ( flags & MSG_TRUNC ) err = skb -> len ; out_free : skb_free_datagram ( sk , skb ) ; out : return err ; csum_copy_err : skb_kill_datagram ( sk , skb , flags ) ; err = ( flags & MSG_DONTWAIT ) ? - EAGAIN : - EHOSTUNREACH ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - EOPNOTSUPP <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) -> iif ) ; * addr_len = sizeof ( * sin6\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t dm9000ReceivePacket ( NetInterface * interface ) { error_t error ; size_t i ; size_t n ; size_t length ; volatile uint8_t status ; volatile uint16_t data ; Dm9000Context * context ; context = ( Dm9000Context * ) interface -> nicContext ; <S2SV_StartBug> data = dm9000ReadReg ( DM9000_REG_MRCMDX ) ; <S2SV_EndBug> <S2SV_StartBug> DM9000_INDEX_REG = DM9000_REG_MRCMDX1 ; <S2SV_EndBug> status = LSB ( DM9000_DATA_REG ) ; if ( status == 0x01 ) { <S2SV_StartBug> DM9000_INDEX_REG = DM9000_REG_MRCMD ; <S2SV_EndBug> status = MSB ( DM9000_DATA_REG ) ; length = DM9000_DATA_REG ; n = MIN ( length , ETH_MAX_FRAME_SIZE ) ; i = 0 ; <S2SV_StartBug> if ( ( status & ( RSR_LCS | RSR_RWTO | RSR_PLE | RSR_AE | RSR_CE | RSR_FOE ) ) == 0 ) <S2SV_EndBug> { while ( ( i + 1 ) < n ) { data = DM9000_DATA_REG ; context -> rxBuffer [ i ++ ] = LSB ( data ) ; context -> rxBuffer [ i ++ ] = MSB ( data ) ; } if ( ( i + 1 ) == n ) { data = DM9000_DATA_REG ; context -> rxBuffer [ i ] = LSB ( data ) ; i += 2 ; } error = NO_ERROR ; } else { error = ERROR_INVALID_PACKET ; } while ( i < length ) { data = DM9000_DATA_REG ; i += 2 ; } } else { error = ERROR_BUFFER_EMPTY ; } if ( ! error ) { NetRxAncillary ancillary ; ancillary = NET_DEFAULT_RX_ANCILLARY ; nicProcessPacket ( interface , context -> rxBuffer , n , & ancillary ) ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = dm9000ReadReg ( DM9000_MRCMDX <S2SV_ModEnd> ) ; DM9000_INDEX_REG <S2SV_ModStart> ; DM9000_INDEX_REG = DM9000_MRCMDX1 <S2SV_ModEnd> ; status = <S2SV_ModStart> { DM9000_INDEX_REG = DM9000_MRCMD <S2SV_ModEnd> ; status = <S2SV_ModStart> status & ( DM9000_RSR_LCS | DM9000_RSR_RWTO | DM9000_RSR_PLE | DM9000_RSR_AE | DM9000_RSR_CE | DM9000_RSR_FOE <S2SV_ModEnd> ) ) ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static arguments_ty ast_for_arguments ( struct compiling * c , const node * n ) { int i , j , k , nposargs = 0 , nkwonlyargs = 0 ; int nposdefaults = 0 , found_default = 0 ; asdl_seq * posargs , * posdefaults , * kwonlyargs , * kwdefaults ; arg_ty vararg = NULL , kwarg = NULL ; arg_ty arg ; node * ch ; if ( TYPE ( n ) == parameters ) { if ( NCH ( n ) == 2 ) return arguments ( NULL , NULL , NULL , NULL , NULL , NULL , c -> c_arena ) ; n = CHILD ( n , 1 ) ; } assert ( TYPE ( n ) == typedargslist || TYPE ( n ) == varargslist ) ; for ( i = 0 ; i < NCH ( n ) ; i ++ ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == STAR ) { i ++ ; if ( i < NCH ( n ) && ( TYPE ( CHILD ( n , i ) ) == tfpdef || TYPE ( CHILD ( n , i ) ) == vfpdef ) ) { i ++ ; } break ; } if ( TYPE ( ch ) == DOUBLESTAR ) break ; if ( TYPE ( ch ) == vfpdef || TYPE ( ch ) == tfpdef ) nposargs ++ ; if ( TYPE ( ch ) == EQUAL ) nposdefaults ++ ; } for ( ; i < NCH ( n ) ; ++ i ) { ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == DOUBLESTAR ) break ; if ( TYPE ( ch ) == tfpdef || TYPE ( ch ) == vfpdef ) nkwonlyargs ++ ; } posargs = ( nposargs ? _Ta3_asdl_seq_new ( nposargs , c -> c_arena ) : NULL ) ; if ( ! posargs && nposargs ) return NULL ; kwonlyargs = ( nkwonlyargs ? _Ta3_asdl_seq_new ( nkwonlyargs , c -> c_arena ) : NULL ) ; if ( ! kwonlyargs && nkwonlyargs ) return NULL ; posdefaults = ( nposdefaults ? _Ta3_asdl_seq_new ( nposdefaults , c -> c_arena ) : NULL ) ; if ( ! posdefaults && nposdefaults ) return NULL ; kwdefaults = ( nkwonlyargs ? _Ta3_asdl_seq_new ( nkwonlyargs , c -> c_arena ) : NULL ) ; if ( ! kwdefaults && nkwonlyargs ) return NULL ; <S2SV_StartBug> if ( nposargs + nkwonlyargs > 255 ) { <S2SV_EndBug> ast_error ( c , n , \"more<S2SV_blank>than<S2SV_blank>255<S2SV_blank>arguments\" ) ; return NULL ; } i = 0 ; j = 0 ; k = 0 ; while ( i < NCH ( n ) ) { ch = CHILD ( n , i ) ; switch ( TYPE ( ch ) ) { case tfpdef : case vfpdef : if ( i + 1 < NCH ( n ) && TYPE ( CHILD ( n , i + 1 ) ) == EQUAL ) { expr_ty expression = ast_for_expr ( c , CHILD ( n , i + 2 ) ) ; if ( ! expression ) return NULL ; assert ( posdefaults != NULL ) ; asdl_seq_SET ( posdefaults , j ++ , expression ) ; i += 2 ; found_default = 1 ; } else if ( found_default ) { ast_error ( c , n , \"non-default<S2SV_blank>argument<S2SV_blank>follows<S2SV_blank>default<S2SV_blank>argument\" ) ; return NULL ; } arg = ast_for_arg ( c , ch ) ; if ( ! arg ) return NULL ; asdl_seq_SET ( posargs , k ++ , arg ) ; i += 1 ; <S2SV_StartBug> if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == COMMA ) <S2SV_EndBug> i += 1 ; break ; case STAR : if ( i + 1 >= NCH ( n ) || ( i + 2 == NCH ( n ) && ( TYPE ( CHILD ( n , i + 1 ) ) == COMMA || TYPE ( CHILD ( n , i + 1 ) ) == TYPE_COMMENT ) ) ) { ast_error ( c , CHILD ( n , i ) , \"named<S2SV_blank>arguments<S2SV_blank>must<S2SV_blank>follow<S2SV_blank>bare<S2SV_blank>*\" ) ; return NULL ; } ch = CHILD ( n , i + 1 ) ; if ( TYPE ( ch ) == COMMA ) { int res = 0 ; i += 2 ; <S2SV_StartBug> if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == TYPE_COMMENT ) { <S2SV_EndBug> ast_error ( c , CHILD ( n , i ) , \"bare<S2SV_blank>*<S2SV_blank>has<S2SV_blank>associated<S2SV_blank>type<S2SV_blank>comment\" ) ; return NULL ; } res = handle_keywordonly_args ( c , n , i , kwonlyargs , kwdefaults ) ; if ( res == - 1 ) return NULL ; i = res ; } else { vararg = ast_for_arg ( c , ch ) ; if ( ! vararg ) return NULL ; i += 2 ; <S2SV_StartBug> if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == COMMA ) <S2SV_EndBug> i += 1 ; <S2SV_StartBug> if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == TYPE_COMMENT ) { <S2SV_EndBug> vararg -> type_comment = NEW_TYPE_COMMENT ( CHILD ( n , i ) ) ; i += 1 ; } if ( i < NCH ( n ) && ( TYPE ( CHILD ( n , i ) ) == tfpdef || TYPE ( CHILD ( n , i ) ) == vfpdef ) ) { int res = 0 ; res = handle_keywordonly_args ( c , n , i , kwonlyargs , kwdefaults ) ; if ( res == - 1 ) return NULL ; i = res ; } } break ; case DOUBLESTAR : ch = CHILD ( n , i + 1 ) ; assert ( TYPE ( ch ) == tfpdef || TYPE ( ch ) == vfpdef ) ; kwarg = ast_for_arg ( c , ch ) ; if ( ! kwarg ) return NULL ; i += 2 ; <S2SV_StartBug> if ( i < NCH ( n ) && TYPE ( CHILD ( n , i ) ) == COMMA ) <S2SV_EndBug> i += 1 ; break ; case TYPE_COMMENT : assert ( i ) ; if ( kwarg ) arg = kwarg ; arg -> type_comment = NEW_TYPE_COMMENT ( ch ) ; i += 1 ; break ; default : PyErr_Format ( PyExc_SystemError , \"unexpected<S2SV_blank>node<S2SV_blank>in<S2SV_blank>varargslist:<S2SV_blank>%d<S2SV_blank>@<S2SV_blank>%d\" , TYPE ( ch ) , i ) ; return NULL ; } } return arguments ( posargs , vararg , kwonlyargs , kwdefaults , kwarg , posdefaults , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return NULL ; <S2SV_ModEnd> i = 0 <S2SV_ModStart> ; if ( <S2SV_ModEnd> TYPE ( CHILD <S2SV_ModStart> ; if ( <S2SV_ModEnd> TYPE ( CHILD <S2SV_ModStart> ; if ( <S2SV_ModEnd> TYPE ( CHILD <S2SV_ModStart> ; if ( <S2SV_ModEnd> TYPE ( CHILD <S2SV_ModStart> ; if ( <S2SV_ModEnd> TYPE ( CHILD\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4176\n\n```\nCWE-200 void __detach_mounts ( struct dentry * dentry ) { struct mountpoint * mp ; struct mount * mnt ; namespace_lock ( ) ; mp = lookup_mountpoint ( dentry ) ; if ( IS_ERR_OR_NULL ( mp ) ) goto out_unlock ; lock_mount_hash ( ) ; while ( ! hlist_empty ( & mp -> m_list ) ) { mnt = hlist_entry ( mp -> m_list . first , struct mount , mnt_mp_list ) ; if ( mnt -> mnt . mnt_flags & MNT_UMOUNT ) { struct mount * p , * tmp ; list_for_each_entry_safe ( p , tmp , & mnt -> mnt_mounts , mnt_child ) { hlist_add_head ( & p -> mnt_umount . s_list , & unmounted ) ; umount_mnt ( p ) ; } } <S2SV_StartBug> else umount_tree ( mnt , 0 ) ; <S2SV_EndBug> } unlock_mount_hash ( ) ; put_mountpoint ( mp ) ; out_unlock : namespace_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( mnt , UMOUNT_CONNECTED <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11068\n\n```\nCWE-120 SecureElementStatus_t SecureElementProcessJoinAccept ( JoinReqIdentifier_t joinReqType , uint8_t * joinEui , uint16_t devNonce , uint8_t * encJoinAccept , uint8_t encJoinAcceptSize , uint8_t * decJoinAccept , uint8_t * versionMinor ) { if ( ( encJoinAccept == NULL ) || ( decJoinAccept == NULL ) || ( versionMinor == NULL ) ) { <S2SV_StartBug> return SECURE_ELEMENT_ERROR_NPE ; <S2SV_EndBug> } KeyIdentifier_t encKeyID = NWK_KEY ; if ( joinReqType != JOIN_REQ ) { encKeyID = J_S_ENC_KEY ; } memcpy1 ( decJoinAccept , encJoinAccept , encJoinAcceptSize ) ; if ( SecureElementAesEncrypt ( encJoinAccept + LORAMAC_MHDR_FIELD_SIZE , encJoinAcceptSize - LORAMAC_MHDR_FIELD_SIZE , encKeyID , decJoinAccept + LORAMAC_MHDR_FIELD_SIZE ) != SECURE_ELEMENT_SUCCESS ) { return SECURE_ELEMENT_FAIL_ENCRYPT ; } * versionMinor = ( ( decJoinAccept [ 11 ] & 0x80 ) == 0x80 ) ? 1 : 0 ; uint32_t mic = 0 ; mic = ( ( uint32_t ) decJoinAccept [ encJoinAcceptSize - LORAMAC_MIC_FIELD_SIZE ] << 0 ) ; mic |= ( ( uint32_t ) decJoinAccept [ encJoinAcceptSize - LORAMAC_MIC_FIELD_SIZE + 1 ] << 8 ) ; mic |= ( ( uint32_t ) decJoinAccept [ encJoinAcceptSize - LORAMAC_MIC_FIELD_SIZE + 2 ] << 16 ) ; mic |= ( ( uint32_t ) decJoinAccept [ encJoinAcceptSize - LORAMAC_MIC_FIELD_SIZE + 3 ] << 24 ) ; if ( * versionMinor == 0 ) { if ( SecureElementVerifyAesCmac ( decJoinAccept , ( encJoinAcceptSize - LORAMAC_MIC_FIELD_SIZE ) , mic , NWK_KEY ) != SECURE_ELEMENT_SUCCESS ) { return SECURE_ELEMENT_FAIL_CMAC ; } } # if ( USE_LRWAN_1_1_X_CRYPTO == 1 ) else if ( * versionMinor == 1 ) { uint8_t micHeader11 [ JOIN_ACCEPT_MIC_COMPUTATION_OFFSET ] = { 0 } ; uint16_t bufItr = 0 ; micHeader11 [ bufItr ++ ] = ( uint8_t ) joinReqType ; memcpyr ( micHeader11 + bufItr , joinEui , LORAMAC_JOIN_EUI_FIELD_SIZE ) ; bufItr += LORAMAC_JOIN_EUI_FIELD_SIZE ; micHeader11 [ bufItr ++ ] = devNonce & 0xFF ; micHeader11 [ bufItr ++ ] = ( devNonce >> 8 ) & 0xFF ; uint8_t localBuffer [ LORAMAC_JOIN_ACCEPT_FRAME_MAX_SIZE + JOIN_ACCEPT_MIC_COMPUTATION_OFFSET ] = { 0 } ; memcpy1 ( localBuffer , micHeader11 , JOIN_ACCEPT_MIC_COMPUTATION_OFFSET ) ; memcpy1 ( localBuffer + JOIN_ACCEPT_MIC_COMPUTATION_OFFSET - 1 , decJoinAccept , encJoinAcceptSize ) ; if ( SecureElementVerifyAesCmac ( localBuffer , encJoinAcceptSize + JOIN_ACCEPT_MIC_COMPUTATION_OFFSET - LORAMAC_MHDR_FIELD_SIZE - LORAMAC_MIC_FIELD_SIZE , mic , J_S_INT_KEY ) != SECURE_ELEMENT_SUCCESS ) { return SECURE_ELEMENT_FAIL_CMAC ; } } # endif else { return SECURE_ELEMENT_ERROR_INVALID_LORAWAM_SPEC_VERSION ; } return SECURE_ELEMENT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { return SECURE_ELEMENT_ERROR_NPE ; } if ( encJoinAcceptSize > LORAMAC_JOIN_ACCEPT_FRAME_MAX_SIZE ) { return SECURE_ELEMENT_ERROR_BUF_SIZE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7917\n\n```\nCWE-125 static void nfnetlink_rcv_batch ( struct sk_buff * skb , struct nlmsghdr * nlh , u_int16_t subsys_id ) { struct sk_buff * oskb = skb ; struct net * net = sock_net ( skb -> sk ) ; const struct nfnetlink_subsystem * ss ; const struct nfnl_callback * nc ; static LIST_HEAD ( err_list ) ; u32 status ; int err ; if ( subsys_id >= NFNL_SUBSYS_COUNT ) return netlink_ack ( skb , nlh , - EINVAL ) ; replay : status = 0 ; skb = netlink_skb_clone ( oskb , GFP_KERNEL ) ; if ( ! skb ) return netlink_ack ( oskb , nlh , - ENOMEM ) ; nfnl_lock ( subsys_id ) ; ss = nfnl_dereference_protected ( subsys_id ) ; if ( ! ss ) { # ifdef CONFIG_MODULES nfnl_unlock ( subsys_id ) ; request_module ( \"nfnetlink-subsys-%d\" , subsys_id ) ; nfnl_lock ( subsys_id ) ; ss = nfnl_dereference_protected ( subsys_id ) ; if ( ! ss ) # endif { nfnl_unlock ( subsys_id ) ; netlink_ack ( oskb , nlh , - EOPNOTSUPP ) ; return kfree_skb ( skb ) ; } } if ( ! ss -> commit || ! ss -> abort ) { nfnl_unlock ( subsys_id ) ; netlink_ack ( oskb , nlh , - EOPNOTSUPP ) ; return kfree_skb ( skb ) ; } while ( skb -> len >= nlmsg_total_size ( 0 ) ) { int msglen , type ; nlh = nlmsg_hdr ( skb ) ; err = 0 ; <S2SV_StartBug> if ( nlmsg_len ( nlh ) < sizeof ( struct nfgenmsg ) || <S2SV_EndBug> skb -> len < nlh -> nlmsg_len ) { err = - EINVAL ; goto ack ; } if ( ! ( nlh -> nlmsg_flags & NLM_F_REQUEST ) ) { err = - EINVAL ; goto ack ; } type = nlh -> nlmsg_type ; if ( type == NFNL_MSG_BATCH_BEGIN ) { nfnl_err_reset ( & err_list ) ; status |= NFNL_BATCH_FAILURE ; goto done ; } else if ( type == NFNL_MSG_BATCH_END ) { status |= NFNL_BATCH_DONE ; goto done ; } else if ( type < NLMSG_MIN_TYPE ) { err = - EINVAL ; goto ack ; } if ( NFNL_SUBSYS_ID ( type ) != subsys_id ) { err = - EINVAL ; goto ack ; } nc = nfnetlink_find_client ( type , ss ) ; if ( ! nc ) { err = - EINVAL ; goto ack ; } { int min_len = nlmsg_total_size ( sizeof ( struct nfgenmsg ) ) ; u_int8_t cb_id = NFNL_MSG_TYPE ( nlh -> nlmsg_type ) ; struct nlattr * cda [ ss -> cb [ cb_id ] . attr_count + 1 ] ; struct nlattr * attr = ( void * ) nlh + min_len ; int attrlen = nlh -> nlmsg_len - min_len ; err = nla_parse ( cda , ss -> cb [ cb_id ] . attr_count , attr , attrlen , ss -> cb [ cb_id ] . policy ) ; if ( err < 0 ) goto ack ; if ( nc -> call_batch ) { err = nc -> call_batch ( net , net -> nfnl , skb , nlh , ( const struct nlattr * * ) cda ) ; } if ( err == - EAGAIN ) { status |= NFNL_BATCH_REPLAY ; goto next ; } } ack : if ( nlh -> nlmsg_flags & NLM_F_ACK || err ) { if ( nfnl_err_add ( & err_list , nlh , err ) < 0 ) { nfnl_err_reset ( & err_list ) ; netlink_ack ( oskb , nlmsg_hdr ( oskb ) , - ENOMEM ) ; status |= NFNL_BATCH_FAILURE ; goto done ; } if ( err ) status |= NFNL_BATCH_FAILURE ; } next : msglen = NLMSG_ALIGN ( nlh -> nlmsg_len ) ; if ( msglen > skb -> len ) msglen = skb -> len ; skb_pull ( skb , msglen ) ; } done : if ( status & NFNL_BATCH_REPLAY ) { ss -> abort ( net , oskb ) ; nfnl_err_reset ( & err_list ) ; nfnl_unlock ( subsys_id ) ; kfree_skb ( skb ) ; goto replay ; } else if ( status == NFNL_BATCH_DONE ) { ss -> commit ( net , oskb ) ; } else { ss -> abort ( net , oskb ) ; } nfnl_err_deliver ( & err_list , oskb ) ; nfnl_unlock ( subsys_id ) ; kfree_skb ( skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( nlh -> nlmsg_len < NLMSG_HDRLEN || skb -> len < nlh -> nlmsg_len || <S2SV_ModStart> struct nfgenmsg ) ) { nfnl_err_reset ( & err_list ) ; status |= NFNL_BATCH_FAILURE ; goto done <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16535\n\n```\nCWE-125 int usb_get_bos_descriptor ( struct usb_device * dev ) { struct device * ddev = & dev -> dev ; struct usb_bos_descriptor * bos ; struct usb_dev_cap_header * cap ; unsigned char * buffer ; int length , total_len , num , i ; int ret ; bos = kzalloc ( sizeof ( struct usb_bos_descriptor ) , GFP_KERNEL ) ; if ( ! bos ) return - ENOMEM ; ret = usb_get_descriptor ( dev , USB_DT_BOS , 0 , bos , USB_DT_BOS_SIZE ) ; if ( ret < USB_DT_BOS_SIZE ) { dev_err ( ddev , \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>BOS<S2SV_blank>descriptor\\\\n\" ) ; if ( ret >= 0 ) ret = - ENOMSG ; kfree ( bos ) ; return ret ; } length = bos -> bLength ; total_len = le16_to_cpu ( bos -> wTotalLength ) ; num = bos -> bNumDeviceCaps ; kfree ( bos ) ; if ( total_len < length ) return - EINVAL ; dev -> bos = kzalloc ( sizeof ( struct usb_host_bos ) , GFP_KERNEL ) ; if ( ! dev -> bos ) return - ENOMEM ; buffer = kzalloc ( total_len , GFP_KERNEL ) ; if ( ! buffer ) { ret = - ENOMEM ; goto err ; } dev -> bos -> desc = ( struct usb_bos_descriptor * ) buffer ; ret = usb_get_descriptor ( dev , USB_DT_BOS , 0 , buffer , total_len ) ; if ( ret < total_len ) { dev_err ( ddev , \"unable<S2SV_blank>to<S2SV_blank>get<S2SV_blank>BOS<S2SV_blank>descriptor<S2SV_blank>set\\\\n\" ) ; if ( ret >= 0 ) ret = - ENOMSG ; goto err ; } total_len -= length ; for ( i = 0 ; i < num ; i ++ ) { buffer += length ; cap = ( struct usb_dev_cap_header * ) buffer ; <S2SV_StartBug> length = cap -> bLength ; <S2SV_EndBug> if ( total_len < length ) break ; total_len -= length ; if ( cap -> bDescriptorType != USB_DT_DEVICE_CAPABILITY ) { dev_warn ( ddev , \"descriptor<S2SV_blank>type<S2SV_blank>invalid,<S2SV_blank>skip\\\\n\" ) ; continue ; } switch ( cap -> bDevCapabilityType ) { case USB_CAP_TYPE_WIRELESS_USB : break ; case USB_CAP_TYPE_EXT : dev -> bos -> ext_cap = ( struct usb_ext_cap_descriptor * ) buffer ; break ; case USB_SS_CAP_TYPE : dev -> bos -> ss_cap = ( struct usb_ss_cap_descriptor * ) buffer ; break ; case USB_SSP_CAP_TYPE : dev -> bos -> ssp_cap = ( struct usb_ssp_cap_descriptor * ) buffer ; break ; case CONTAINER_ID_TYPE : dev -> bos -> ss_id = ( struct usb_ss_container_id_descriptor * ) buffer ; break ; case USB_PTM_CAP_TYPE : dev -> bos -> ptm_cap = ( struct usb_ptm_cap_descriptor * ) buffer ; default : break ; } } return 0 ; err : usb_release_bos_descriptor ( dev ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) buffer ; if ( total_len < sizeof ( * cap ) || total_len < <S2SV_ModEnd> cap -> bLength <S2SV_ModStart> cap -> bLength ) { dev -> bos -> desc -> bNumDeviceCaps = i ; break ; } length = cap -> bLength <S2SV_ModEnd> ; total_len -=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2161\n\n```\nCWE-399 static int ape_read_header ( AVFormatContext * s , AVFormatParameters * ap ) { AVIOContext * pb = s -> pb ; APEContext * ape = s -> priv_data ; AVStream * st ; uint32_t tag ; int i ; int total_blocks ; int64_t pts ; ape -> junklength = 0 ; tag = avio_rl32 ( pb ) ; if ( tag != MKTAG ( 'M' , 'A' , 'C' , '<S2SV_blank>' ) ) return - 1 ; ape -> fileversion = avio_rl16 ( pb ) ; if ( ape -> fileversion < APE_MIN_VERSION || ape -> fileversion > APE_MAX_VERSION ) { av_log ( s , AV_LOG_ERROR , \"Unsupported<S2SV_blank>file<S2SV_blank>version<S2SV_blank>-<S2SV_blank>%d.%02d\\\\n\" , ape -> fileversion / 1000 , ( ape -> fileversion % 1000 ) / 10 ) ; return - 1 ; } if ( ape -> fileversion >= 3980 ) { ape -> padding1 = avio_rl16 ( pb ) ; ape -> descriptorlength = avio_rl32 ( pb ) ; ape -> headerlength = avio_rl32 ( pb ) ; ape -> seektablelength = avio_rl32 ( pb ) ; ape -> wavheaderlength = avio_rl32 ( pb ) ; ape -> audiodatalength = avio_rl32 ( pb ) ; ape -> audiodatalength_high = avio_rl32 ( pb ) ; ape -> wavtaillength = avio_rl32 ( pb ) ; avio_read ( pb , ape -> md5 , 16 ) ; if ( ape -> descriptorlength > 52 ) avio_seek ( pb , ape -> descriptorlength - 52 , SEEK_CUR ) ; ape -> compressiontype = avio_rl16 ( pb ) ; ape -> formatflags = avio_rl16 ( pb ) ; ape -> blocksperframe = avio_rl32 ( pb ) ; ape -> finalframeblocks = avio_rl32 ( pb ) ; ape -> totalframes = avio_rl32 ( pb ) ; ape -> bps = avio_rl16 ( pb ) ; ape -> channels = avio_rl16 ( pb ) ; ape -> samplerate = avio_rl32 ( pb ) ; } else { ape -> descriptorlength = 0 ; ape -> headerlength = 32 ; ape -> compressiontype = avio_rl16 ( pb ) ; ape -> formatflags = avio_rl16 ( pb ) ; ape -> channels = avio_rl16 ( pb ) ; ape -> samplerate = avio_rl32 ( pb ) ; ape -> wavheaderlength = avio_rl32 ( pb ) ; ape -> wavtaillength = avio_rl32 ( pb ) ; ape -> totalframes = avio_rl32 ( pb ) ; ape -> finalframeblocks = avio_rl32 ( pb ) ; if ( ape -> formatflags & MAC_FORMAT_FLAG_HAS_PEAK_LEVEL ) { avio_seek ( pb , 4 , SEEK_CUR ) ; ape -> headerlength += 4 ; } if ( ape -> formatflags & MAC_FORMAT_FLAG_HAS_SEEK_ELEMENTS ) { ape -> seektablelength = avio_rl32 ( pb ) ; ape -> headerlength += 4 ; ape -> seektablelength *= sizeof ( int32_t ) ; } else ape -> seektablelength = ape -> totalframes * sizeof ( int32_t ) ; if ( ape -> formatflags & MAC_FORMAT_FLAG_8_BIT ) ape -> bps = 8 ; else if ( ape -> formatflags & MAC_FORMAT_FLAG_24_BIT ) ape -> bps = 24 ; else ape -> bps = 16 ; if ( ape -> fileversion >= 3950 ) ape -> blocksperframe = 73728 * 4 ; else if ( ape -> fileversion >= 3900 || ( ape -> fileversion >= 3800 && ape -> compressiontype >= 4000 ) ) ape -> blocksperframe = 73728 ; else ape -> blocksperframe = 9216 ; if ( ! ( ape -> formatflags & MAC_FORMAT_FLAG_CREATE_WAV_HEADER ) ) avio_seek ( pb , ape -> wavheaderlength , SEEK_CUR ) ; } <S2SV_StartBug> if ( ape -> totalframes > UINT_MAX / sizeof ( APEFrame ) ) { <S2SV_EndBug> av_log ( s , AV_LOG_ERROR , \"Too<S2SV_blank>many<S2SV_blank>frames:<S2SV_blank>%d\\\\n\" , ape -> totalframes ) ; return - 1 ; } ape -> frames = av_malloc ( ape -> totalframes * sizeof ( APEFrame ) ) ; if ( ! ape -> frames ) return AVERROR ( ENOMEM ) ; ape -> firstframe = ape -> junklength + ape -> descriptorlength + ape -> headerlength + ape -> seektablelength + ape -> wavheaderlength ; ape -> currentframe = 0 ; ape -> totalsamples = ape -> finalframeblocks ; if ( ape -> totalframes > 1 ) ape -> totalsamples += ape -> blocksperframe * ( ape -> totalframes - 1 ) ; if ( ape -> seektablelength > 0 ) { ape -> seektable = av_malloc ( ape -> seektablelength ) ; for ( i = 0 ; i < ape -> seektablelength / sizeof ( uint32_t ) ; i ++ ) ape -> seektable [ i ] = avio_rl32 ( pb ) ; } ape -> frames [ 0 ] . pos = ape -> firstframe ; ape -> frames [ 0 ] . nblocks = ape -> blocksperframe ; ape -> frames [ 0 ] . skip = 0 ; for ( i = 1 ; i < ape -> totalframes ; i ++ ) { ape -> frames [ i ] . pos = ape -> seektable [ i ] ; ape -> frames [ i ] . nblocks = ape -> blocksperframe ; ape -> frames [ i - 1 ] . size = ape -> frames [ i ] . pos - ape -> frames [ i - 1 ] . pos ; ape -> frames [ i ] . skip = ( ape -> frames [ i ] . pos - ape -> frames [ 0 ] . pos ) & 3 ; } ape -> frames [ ape -> totalframes - 1 ] . size = ape -> finalframeblocks * 4 ; ape -> frames [ ape -> totalframes - 1 ] . nblocks = ape -> finalframeblocks ; for ( i = 0 ; i < ape -> totalframes ; i ++ ) { if ( ape -> frames [ i ] . skip ) { ape -> frames [ i ] . pos -= ape -> frames [ i ] . skip ; ape -> frames [ i ] . size += ape -> frames [ i ] . skip ; } ape -> frames [ i ] . size = ( ape -> frames [ i ] . size + 3 ) & ~ 3 ; } ape_dumpinfo ( s , ape ) ; if ( ! url_is_streamed ( pb ) ) { ff_ape_parse_tag ( s ) ; avio_seek ( pb , 0 , SEEK_SET ) ; } av_log ( s , AV_LOG_DEBUG , \"Decoding<S2SV_blank>file<S2SV_blank>-<S2SV_blank>v%d.%02d,<S2SV_blank>compression<S2SV_blank>level<S2SV_blank>%d\\\\n\" , ape -> fileversion / 1000 , ( ape -> fileversion % 1000 ) / 10 , ape -> compressiontype ) ; st = av_new_stream ( s , 0 ) ; if ( ! st ) return - 1 ; total_blocks = ( ape -> totalframes == 0 ) ? 0 : ( ( ape -> totalframes - 1 ) * ape -> blocksperframe ) + ape -> finalframeblocks ; st -> codec -> codec_type = AVMEDIA_TYPE_AUDIO ; st -> codec -> codec_id = CODEC_ID_APE ; st -> codec -> codec_tag = MKTAG ( 'A' , 'P' , 'E' , '<S2SV_blank>' ) ; st -> codec -> channels = ape -> channels ; st -> codec -> sample_rate = ape -> samplerate ; st -> codec -> bits_per_coded_sample = ape -> bps ; st -> codec -> frame_size = MAC_SUBFRAME_SIZE ; st -> nb_frames = ape -> totalframes ; st -> start_time = 0 ; st -> duration = total_blocks / MAC_SUBFRAME_SIZE ; av_set_pts_info ( st , 64 , MAC_SUBFRAME_SIZE , ape -> samplerate ) ; st -> codec -> extradata = av_malloc ( APE_EXTRADATA_SIZE ) ; st -> codec -> extradata_size = APE_EXTRADATA_SIZE ; AV_WL16 ( st -> codec -> extradata + 0 , ape -> fileversion ) ; AV_WL16 ( st -> codec -> extradata + 2 , ape -> compressiontype ) ; AV_WL16 ( st -> codec -> extradata + 4 , ape -> formatflags ) ; pts = 0 ; for ( i = 0 ; i < ape -> totalframes ; i ++ ) { ape -> frames [ i ] . pts = pts ; av_add_index_entry ( st , ape -> frames [ i ] . pos , ape -> frames [ i ] . pts , 0 , 0 , AVINDEX_KEYFRAME ) ; pts += ape -> blocksperframe / MAC_SUBFRAME_SIZE ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ! ape -> totalframes ) { av_log ( s , AV_LOG_ERROR , \"No<S2SV_blank>frames<S2SV_blank>in<S2SV_blank>the<S2SV_blank>file!\\\\n\" ) ; return AVERROR ( EINVAL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int prob_diff_update_cost ( vp9_prob newp , vp9_prob oldp ) { <S2SV_EndBug> int delp = remap_prob ( newp , oldp ) ; return update_bits [ delp ] * 256 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int prob_diff_update_cost ( vpx_prob newp , vpx_prob <S2SV_ModEnd> oldp ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14056\n\n```\nCWE-834 static av_cold int rl2_read_header ( AVFormatContext * s ) { AVIOContext * pb = s -> pb ; AVStream * st ; unsigned int frame_count ; unsigned int audio_frame_counter = 0 ; unsigned int video_frame_counter = 0 ; unsigned int back_size ; unsigned short sound_rate ; unsigned short rate ; unsigned short channels ; unsigned short def_sound_size ; unsigned int signature ; unsigned int pts_den = 11025 ; unsigned int pts_num = 1103 ; unsigned int * chunk_offset = NULL ; int * chunk_size = NULL ; int * audio_size = NULL ; int i ; int ret = 0 ; avio_skip ( pb , 4 ) ; back_size = avio_rl32 ( pb ) ; signature = avio_rb32 ( pb ) ; avio_skip ( pb , 4 ) ; frame_count = avio_rl32 ( pb ) ; if ( back_size > INT_MAX / 2 || frame_count > INT_MAX / sizeof ( uint32_t ) ) return AVERROR_INVALIDDATA ; avio_skip ( pb , 2 ) ; sound_rate = avio_rl16 ( pb ) ; rate = avio_rl16 ( pb ) ; channels = avio_rl16 ( pb ) ; def_sound_size = avio_rl16 ( pb ) ; st = avformat_new_stream ( s , NULL ) ; if ( ! st ) return AVERROR ( ENOMEM ) ; st -> codecpar -> codec_type = AVMEDIA_TYPE_VIDEO ; st -> codecpar -> codec_id = AV_CODEC_ID_RL2 ; st -> codecpar -> codec_tag = 0 ; st -> codecpar -> width = 320 ; st -> codecpar -> height = 200 ; st -> codecpar -> extradata_size = EXTRADATA1_SIZE ; if ( signature == RLV3_TAG && back_size > 0 ) st -> codecpar -> extradata_size += back_size ; if ( ff_get_extradata ( s , st -> codecpar , pb , st -> codecpar -> extradata_size ) < 0 ) return AVERROR ( ENOMEM ) ; if ( sound_rate ) { if ( ! channels || channels > 42 ) { av_log ( s , AV_LOG_ERROR , \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>channels:<S2SV_blank>%d\\\\n\" , channels ) ; return AVERROR_INVALIDDATA ; } pts_num = def_sound_size ; pts_den = rate ; st = avformat_new_stream ( s , NULL ) ; if ( ! st ) return AVERROR ( ENOMEM ) ; st -> codecpar -> codec_type = AVMEDIA_TYPE_AUDIO ; st -> codecpar -> codec_id = AV_CODEC_ID_PCM_U8 ; st -> codecpar -> codec_tag = 1 ; st -> codecpar -> channels = channels ; st -> codecpar -> bits_per_coded_sample = 8 ; st -> codecpar -> sample_rate = rate ; st -> codecpar -> bit_rate = st -> codecpar -> channels * st -> codecpar -> sample_rate * st -> codecpar -> bits_per_coded_sample ; st -> codecpar -> block_align = st -> codecpar -> channels * st -> codecpar -> bits_per_coded_sample / 8 ; avpriv_set_pts_info ( st , 32 , 1 , rate ) ; } avpriv_set_pts_info ( s -> streams [ 0 ] , 32 , pts_num , pts_den ) ; chunk_size = av_malloc ( frame_count * sizeof ( uint32_t ) ) ; audio_size = av_malloc ( frame_count * sizeof ( uint32_t ) ) ; chunk_offset = av_malloc ( frame_count * sizeof ( uint32_t ) ) ; if ( ! chunk_size || ! audio_size || ! chunk_offset ) { av_free ( chunk_size ) ; av_free ( audio_size ) ; av_free ( chunk_offset ) ; return AVERROR ( ENOMEM ) ; } <S2SV_StartBug> for ( i = 0 ; i < frame_count ; i ++ ) <S2SV_EndBug> <S2SV_StartBug> chunk_size [ i ] = avio_rl32 ( pb ) ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < frame_count ; i ++ ) <S2SV_EndBug> <S2SV_StartBug> chunk_offset [ i ] = avio_rl32 ( pb ) ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < frame_count ; i ++ ) <S2SV_EndBug> audio_size [ i ] = avio_rl32 ( pb ) & 0xFFFF ; <S2SV_StartBug> for ( i = 0 ; i < frame_count ; i ++ ) { <S2SV_EndBug> if ( chunk_size [ i ] < 0 || audio_size [ i ] > chunk_size [ i ] ) { ret = AVERROR_INVALIDDATA ; break ; } if ( sound_rate && audio_size [ i ] ) { av_add_index_entry ( s -> streams [ 1 ] , chunk_offset [ i ] , audio_frame_counter , audio_size [ i ] , 0 , AVINDEX_KEYFRAME ) ; audio_frame_counter += audio_size [ i ] / channels ; } av_add_index_entry ( s -> streams [ 0 ] , chunk_offset [ i ] + audio_size [ i ] , video_frame_counter , chunk_size [ i ] - audio_size [ i ] , 0 , AVINDEX_KEYFRAME ) ; ++ video_frame_counter ; } av_free ( chunk_size ) ; av_free ( audio_size ) ; av_free ( chunk_offset ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> pb ) ; } <S2SV_ModStart> i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> pb ) ; } <S2SV_ModStart> i ++ ) { if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> & 0xFFFF ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9708\n\n```\nCWE-000 static int parseFileInner ( MaState * state , cchar * path ) { MaDirective * directive ; char * tok , * key , * line , * value ; assert ( state ) ; assert ( path && * path ) ; if ( openConfig ( state , path ) < 0 ) { return MPR_ERR_CANT_OPEN ; } for ( state -> lineNumber = 1 ; state -> file && ( line = mprReadLine ( state -> file , 0 , NULL ) ) != 0 ; state -> lineNumber ++ ) { for ( tok = line ; isspace ( ( uchar ) * tok ) ; tok ++ ) ; if ( * tok == '\\\\0' || * tok == '#' ) { continue ; } state -> key = 0 ; <S2SV_StartBug> key = getDirective ( line , & value ) ; <S2SV_EndBug> if ( ! state -> enabled ) { if ( key [ 0 ] != '<' ) { continue ; } } if ( ( directive = mprLookupKey ( directives , key ) ) == 0 ) { mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"Unknown<S2SV_blank>directive<S2SV_blank>\\\\\"%s\\\\\".<S2SV_blank>At<S2SV_blank>line<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>%s\" , key , state -> lineNumber , state -> filename ) ; return MPR_ERR_BAD_SYNTAX ; } state -> key = key ; mprPauseGC ( ) ; if ( ( * directive ) ( state , key , value ) < 0 ) { mprResumeGC ( ) ; mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"Error<S2SV_blank>with<S2SV_blank>directive<S2SV_blank>\\\\\"%s\\\\\".<S2SV_blank>At<S2SV_blank>line<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>%s\" , state -> key , state -> lineNumber , state -> filename ) ; return MPR_ERR_BAD_SYNTAX ; } mprResumeGC ( ) ; mprYield ( 0 ) ; state = state -> top -> current ; } if ( state -> prev && state -> file == state -> prev -> file ) { mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"Unclosed<S2SV_blank>directives<S2SV_blank>in<S2SV_blank>%s\" , state -> filename ) ; while ( state -> prev && state -> file == state -> prev -> file ) { state = state -> prev ; } } mprCloseFile ( state -> file ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; if ( ( <S2SV_ModStart> & value ) ) == 0 ) { continue ; } <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t decoder_set_fb_fn ( vpx_codec_alg_priv_t * ctx , vpx_get_frame_buffer_cb_fn_t cb_get , vpx_release_frame_buffer_cb_fn_t cb_release , void * cb_priv ) { if ( cb_get == NULL || cb_release == NULL ) { return VPX_CODEC_INVALID_PARAM ; <S2SV_StartBug> } else if ( ctx -> pbi == NULL ) { <S2SV_EndBug> ctx -> get_ext_fb_cb = cb_get ; ctx -> release_ext_fb_cb = cb_release ; ctx -> ext_priv = cb_priv ; return VPX_CODEC_OK ; } return VPX_CODEC_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ctx -> frame_workers <S2SV_ModEnd> == NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 static int replace_map_fd_with_map_ptr ( struct verifier_env * env ) { struct bpf_insn * insn = env -> prog -> insnsi ; int insn_cnt = env -> prog -> len ; int i , j ; for ( i = 0 ; i < insn_cnt ; i ++ , insn ++ ) { if ( BPF_CLASS ( insn -> code ) == BPF_LDX && ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> imm != 0 ) ) { verbose ( \"BPF_LDX<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( BPF_CLASS ( insn -> code ) == BPF_STX && ( ( BPF_MODE ( insn -> code ) != BPF_MEM && BPF_MODE ( insn -> code ) != BPF_XADD ) || insn -> imm != 0 ) ) { verbose ( \"BPF_STX<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } if ( insn [ 0 ] . code == ( BPF_LD | BPF_IMM | BPF_DW ) ) { struct bpf_map * map ; struct fd f ; if ( i == insn_cnt - 1 || insn [ 1 ] . code != 0 || insn [ 1 ] . dst_reg != 0 || insn [ 1 ] . src_reg != 0 || insn [ 1 ] . off != 0 ) { verbose ( \"invalid<S2SV_blank>bpf_ld_imm64<S2SV_blank>insn\\\\n\" ) ; return - EINVAL ; } if ( insn -> src_reg == 0 ) goto next_insn ; if ( insn -> src_reg != BPF_PSEUDO_MAP_FD ) { verbose ( \"unrecognized<S2SV_blank>bpf_ld_imm64<S2SV_blank>insn\\\\n\" ) ; return - EINVAL ; } f = fdget ( insn -> imm ) ; map = __bpf_map_get ( f ) ; if ( IS_ERR ( map ) ) { verbose ( \"fd<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>not<S2SV_blank>pointing<S2SV_blank>to<S2SV_blank>valid<S2SV_blank>bpf_map\\\\n\" , insn -> imm ) ; return PTR_ERR ( map ) ; } insn [ 0 ] . imm = ( u32 ) ( unsigned long ) map ; insn [ 1 ] . imm = ( ( u64 ) ( unsigned long ) map ) >> 32 ; for ( j = 0 ; j < env -> used_map_cnt ; j ++ ) if ( env -> used_maps [ j ] == map ) { fdput ( f ) ; goto next_insn ; } if ( env -> used_map_cnt >= MAX_USED_MAPS ) { fdput ( f ) ; return - E2BIG ; } <S2SV_StartBug> env -> used_maps [ env -> used_map_cnt ++ ] = map ; <S2SV_EndBug> <S2SV_StartBug> bpf_map_inc ( map , false ) ; <S2SV_EndBug> fdput ( f ) ; next_insn : insn ++ ; i ++ ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> E2BIG ; } map = bpf_map_inc ( map , false ) ; if ( IS_ERR ( map ) ) { fdput ( f ) ; return PTR_ERR ( map ) ; } <S2SV_ModStart> = map ; <S2SV_ModEnd> fdput ( f\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-2647\n\n```\nCWE-476 key_ref_t key_create_or_update ( key_ref_t keyring_ref , const char * type , const char * description , const void * payload , size_t plen , key_perm_t perm , unsigned long flags ) { struct keyring_index_key index_key = { . description = description , } ; struct key_preparsed_payload prep ; struct assoc_array_edit * edit ; const struct cred * cred = current_cred ( ) ; struct key * keyring , * key = NULL ; key_ref_t key_ref ; int ret ; index_key . type = key_type_lookup ( type ) ; if ( IS_ERR ( index_key . type ) ) { key_ref = ERR_PTR ( - ENODEV ) ; goto error ; } key_ref = ERR_PTR ( - EINVAL ) ; <S2SV_StartBug> if ( ! index_key . type -> match || ! index_key . type -> instantiate || <S2SV_EndBug> ( ! index_key . description && ! index_key . type -> preparse ) ) goto error_put_type ; keyring = key_ref_to_ptr ( keyring_ref ) ; key_check ( keyring ) ; key_ref = ERR_PTR ( - ENOTDIR ) ; if ( keyring -> type != & key_type_keyring ) goto error_put_type ; memset ( & prep , 0 , sizeof ( prep ) ) ; prep . data = payload ; prep . datalen = plen ; prep . quotalen = index_key . type -> def_datalen ; prep . trusted = flags & KEY_ALLOC_TRUSTED ; prep . expiry = TIME_T_MAX ; if ( index_key . type -> preparse ) { ret = index_key . type -> preparse ( & prep ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error_free_prep ; } if ( ! index_key . description ) index_key . description = prep . description ; key_ref = ERR_PTR ( - EINVAL ) ; if ( ! index_key . description ) goto error_free_prep ; } index_key . desc_len = strlen ( index_key . description ) ; key_ref = ERR_PTR ( - EPERM ) ; if ( ! prep . trusted && test_bit ( KEY_FLAG_TRUSTED_ONLY , & keyring -> flags ) ) goto error_free_prep ; flags |= prep . trusted ? KEY_ALLOC_TRUSTED : 0 ; ret = __key_link_begin ( keyring , & index_key , & edit ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error_free_prep ; } ret = key_permission ( keyring_ref , KEY_NEED_WRITE ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error_link_end ; } if ( index_key . type -> update ) { key_ref = find_key_to_update ( keyring_ref , & index_key ) ; if ( key_ref ) goto found_matching_key ; } if ( perm == KEY_PERM_UNDEF ) { perm = KEY_POS_VIEW | KEY_POS_SEARCH | KEY_POS_LINK | KEY_POS_SETATTR ; perm |= KEY_USR_VIEW ; if ( index_key . type -> read ) perm |= KEY_POS_READ ; if ( index_key . type == & key_type_keyring || index_key . type -> update ) perm |= KEY_POS_WRITE ; } key = key_alloc ( index_key . type , index_key . description , cred -> fsuid , cred -> fsgid , cred , perm , flags ) ; if ( IS_ERR ( key ) ) { key_ref = ERR_CAST ( key ) ; goto error_link_end ; } ret = __key_instantiate_and_link ( key , & prep , keyring , NULL , & edit ) ; if ( ret < 0 ) { key_put ( key ) ; key_ref = ERR_PTR ( ret ) ; goto error_link_end ; } key_ref = make_key_ref ( key , is_key_possessed ( keyring_ref ) ) ; error_link_end : __key_link_end ( keyring , & index_key , edit ) ; error_free_prep : if ( index_key . type -> preparse ) index_key . type -> free_preparse ( & prep ) ; error_put_type : key_type_put ( index_key . type ) ; error : return key_ref ; found_matching_key : __key_link_end ( keyring , & index_key , edit ) ; key_ref = __key_update ( key_ref , & prep ) ; goto error_free_prep ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> ! index_key .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12988\n\n```\nCWE-125 static int telnet_parse ( netdissect_options * ndo , const u_char * sp , u_int length , int print ) { int i , x ; u_int c ; const u_char * osp , * p ; # define FETCH ( c , sp , length ) do { if ( length < 1 ) goto pktend ; ND_TCHECK ( * sp ) ; c = * sp ++ ; length -- ; } while ( 0 ) osp = sp ; FETCH ( c , sp , length ) ; if ( c != IAC ) goto pktend ; FETCH ( c , sp , length ) ; if ( c == IAC ) { if ( print ) ND_PRINT ( ( ndo , \"IAC<S2SV_blank>IAC\" ) ) ; goto done ; } i = c - TELCMD_FIRST ; if ( i < 0 || i > IAC - TELCMD_FIRST ) goto pktend ; switch ( c ) { case DONT : case DO : case WONT : case WILL : case SB : FETCH ( x , sp , length ) ; if ( x >= 0 && x < NTELOPTS ) { if ( print ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>%s\" , telcmds [ i ] , telopts [ x ] ) ) ; } else { if ( print ) ND_PRINT ( ( ndo , \"%s<S2SV_blank>%#x\" , telcmds [ i ] , x ) ) ; } if ( c != SB ) break ; p = sp ; while ( length > ( u_int ) ( p + 1 - sp ) ) { ND_TCHECK2 ( * p , 2 ) ; if ( p [ 0 ] == IAC && p [ 1 ] == SE ) break ; p ++ ; } <S2SV_StartBug> if ( * p != IAC ) <S2SV_EndBug> goto pktend ; switch ( x ) { case TELOPT_AUTHENTICATION : if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , authcmd ) ) ) ; if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , authtype ) ) ) ; break ; case TELOPT_ENCRYPT : if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , enccmd ) ) ) ; if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , enctype ) ) ) ; break ; default : if ( p <= sp ) break ; FETCH ( c , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , STR_OR_ID ( c , cmds ) ) ) ; break ; } while ( p > sp ) { FETCH ( x , sp , length ) ; if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>%#x\" , x ) ) ; } if ( print ) ND_PRINT ( ( ndo , \"<S2SV_blank>SE\" ) ) ; sp += 2 ; break ; default : if ( print ) ND_PRINT ( ( ndo , \"%s\" , telcmds [ i ] ) ) ; goto done ; } done : return sp - osp ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; pktend : return - 1 ; # undef FETCH }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ; } ND_TCHECK ( * p ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11339\n\n```\nCWE-125 static int decode_studio_vop_header ( Mpeg4DecContext * ctx , GetBitContext * gb ) { MpegEncContext * s = & ctx -> m ; if ( get_bits_left ( gb ) <= 32 ) return 0 ; s -> partitioned_frame = 0 ; <S2SV_StartBug> s -> decode_mb = mpeg4_decode_studio_mb ; <S2SV_EndBug> decode_smpte_tc ( ctx , gb ) ; skip_bits ( gb , 10 ) ; skip_bits ( gb , 2 ) ; s -> pict_type = get_bits ( gb , 2 ) + AV_PICTURE_TYPE_I ; if ( get_bits1 ( gb ) ) { skip_bits1 ( gb ) ; skip_bits1 ( gb ) ; s -> progressive_frame = get_bits1 ( gb ) ^ 1 ; } if ( s -> pict_type == AV_PICTURE_TYPE_I ) { if ( get_bits1 ( gb ) ) reset_studio_dc_predictors ( s ) ; } if ( ctx -> shape != BIN_ONLY_SHAPE ) { s -> alternate_scan = get_bits1 ( gb ) ; s -> frame_pred_frame_dct = get_bits1 ( gb ) ; s -> dct_precision = get_bits ( gb , 2 ) ; s -> intra_dc_precision = get_bits ( gb , 2 ) ; s -> q_scale_type = get_bits1 ( gb ) ; } if ( s -> alternate_scan ) { ff_init_scantable ( s -> idsp . idct_permutation , & s -> inter_scantable , ff_alternate_vertical_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_scantable , ff_alternate_vertical_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_h_scantable , ff_alternate_vertical_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_v_scantable , ff_alternate_vertical_scan ) ; } else { ff_init_scantable ( s -> idsp . idct_permutation , & s -> inter_scantable , ff_zigzag_direct ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_scantable , ff_zigzag_direct ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_h_scantable , ff_alternate_horizontal_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_v_scantable , ff_alternate_vertical_scan ) ; } mpeg4_load_default_matrices ( s ) ; next_start_code_studio ( gb ) ; extension_and_user_data ( s , gb , 4 ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; s -> interlaced_dct = 0 ; s ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 static pdf_creator_t * new_creator ( int * n_elements ) { pdf_creator_t * daddy ; static const pdf_creator_t creator_template [ ] = { { \"Title\" , \"\" } , { \"Author\" , \"\" } , { \"Subject\" , \"\" } , { \"Keywords\" , \"\" } , { \"Creator\" , \"\" } , { \"Producer\" , \"\" } , { \"CreationDate\" , \"\" } , { \"ModDate\" , \"\" } , { \"Trapped\" , \"\" } , } ; <S2SV_StartBug> daddy = malloc ( sizeof ( creator_template ) ) ; <S2SV_EndBug> memcpy ( daddy , creator_template , sizeof ( creator_template ) ) ; if ( n_elements ) * n_elements = sizeof ( creator_template ) / sizeof ( creator_template [ 0 ] ) ; return daddy ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; daddy = safe_calloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static PyObject * builtin_compile_impl ( PyObject * module , PyObject * source , PyObject * filename , const char * mode , int flags , int dont_inherit , int optimize ) { PyObject * source_copy ; const char * str ; int compile_mode = - 1 ; int is_ast ; PyCompilerFlags cf ; <S2SV_StartBug> int start [ ] = { Py_file_input , Py_eval_input , Py_single_input } ; <S2SV_EndBug> PyObject * result ; cf . cf_flags = flags | PyCF_SOURCE_IS_UTF8 ; if ( flags & <S2SV_StartBug> ~ ( PyCF_MASK | PyCF_MASK_OBSOLETE | PyCF_DONT_IMPLY_DEDENT | PyCF_ONLY_AST ) ) <S2SV_EndBug> { PyErr_SetString ( PyExc_ValueError , \"compile():<S2SV_blank>unrecognised<S2SV_blank>flags\" ) ; goto error ; } if ( optimize < - 1 || optimize > 2 ) { PyErr_SetString ( PyExc_ValueError , \"compile():<S2SV_blank>invalid<S2SV_blank>optimize<S2SV_blank>value\" ) ; goto error ; } if ( ! dont_inherit ) { PyEval_MergeCompilerFlags ( & cf ) ; } if ( strcmp ( mode , \"exec\" ) == 0 ) compile_mode = 0 ; else if ( strcmp ( mode , \"eval\" ) == 0 ) compile_mode = 1 ; else if ( strcmp ( mode , \"single\" ) == 0 ) compile_mode = 2 ; <S2SV_StartBug> else { <S2SV_EndBug> PyErr_SetString ( PyExc_ValueError , <S2SV_StartBug> \"compile()<S2SV_blank>mode<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'exec\\',<S2SV_blank>\\'eval\\'<S2SV_blank>or<S2SV_blank>\\'single\\'\" ) ; <S2SV_EndBug> goto error ; } is_ast = PyAST_Check ( source ) ; if ( is_ast == - 1 ) goto error ; if ( is_ast ) { if ( flags & PyCF_ONLY_AST ) { Py_INCREF ( source ) ; result = source ; } else { PyArena * arena ; mod_ty mod ; arena = PyArena_New ( ) ; if ( arena == NULL ) goto error ; mod = PyAST_obj2mod ( source , arena , compile_mode ) ; if ( mod == NULL ) { PyArena_Free ( arena ) ; goto error ; } if ( ! PyAST_Validate ( mod ) ) { PyArena_Free ( arena ) ; goto error ; } result = ( PyObject * ) PyAST_CompileObject ( mod , filename , & cf , optimize , arena ) ; PyArena_Free ( arena ) ; } goto finally ; } str = source_as_string ( source , \"compile\" , \"string,<S2SV_blank>bytes<S2SV_blank>or<S2SV_blank>AST\" , & cf , & source_copy ) ; if ( str == NULL ) goto error ; result = Py_CompileStringObject ( str , filename , start [ compile_mode ] , & cf , optimize ) ; Py_XDECREF ( source_copy ) ; goto finally ; error : result = NULL ; finally : Py_DECREF ( filename ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> Py_eval_input , Py_single_input , Py_func_type_input <S2SV_ModStart> PyCF_DONT_IMPLY_DEDENT | PyCF_ONLY_AST | PyCF_TYPE_COMMENTS <S2SV_ModStart> 2 ; else if ( strcmp ( mode , \"func_type\" ) == 0 ) { if ( ! ( flags & PyCF_ONLY_AST ) ) <S2SV_ModStart> ( PyExc_ValueError , \"compile()<S2SV_blank>mode<S2SV_blank>\\'func_type\\'<S2SV_blank>requires<S2SV_blank>flag<S2SV_blank>PyCF_ONLY_AST\" ) ; goto error ; } compile_mode = 3 ; } else { const char * msg ; if ( flags & PyCF_ONLY_AST ) msg = \"compile()<S2SV_blank>mode<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'exec\\',<S2SV_blank>\\'eval\\',<S2SV_blank>\\'single\\'<S2SV_blank>or<S2SV_blank>\\'func_type\\'\" ; else msg = \"compile()<S2SV_blank>mode<S2SV_blank>must<S2SV_blank>be<S2SV_blank>\\'exec\\',<S2SV_blank>\\'eval\\'<S2SV_blank>or<S2SV_blank>\\'single\\'\" ; PyErr_SetString ( PyExc_ValueError , msg <S2SV_ModEnd> ) ; goto\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18586\n\n```\nCWE-22 int main ( int argc , char * argv [ ] ) { struct mschm_decompressor * chmd ; struct mschmd_header * chm ; struct mschmd_file * file , * * f ; unsigned int numf , i ; setbuf ( stdout , NULL ) ; setbuf ( stderr , NULL ) ; user_umask = umask ( 0 ) ; umask ( user_umask ) ; MSPACK_SYS_SELFTEST ( i ) ; if ( i ) return 0 ; if ( ( chmd = mspack_create_chm_decompressor ( NULL ) ) ) { for ( argv ++ ; * argv ; argv ++ ) { printf ( \"%s\\\\n\" , * argv ) ; if ( ( chm = chmd -> open ( chmd , * argv ) ) ) { for ( numf = 0 , file = chm -> files ; file ; file = file -> next ) numf ++ ; if ( ( f = ( struct mschmd_file * * ) calloc ( numf , sizeof ( struct mschmd_file * ) ) ) ) { for ( i = 0 , file = chm -> files ; file ; file = file -> next ) f [ i ++ ] = file ; qsort ( f , numf , sizeof ( struct mschmd_file * ) , & sortfunc ) ; for ( i = 0 ; i < numf ; i ++ ) { <S2SV_StartBug> char * outname = create_output_name ( ( unsigned char * ) f [ i ] -> filename , NULL , 0 , 1 , 0 ) ; <S2SV_EndBug> printf ( \"Extracting<S2SV_blank>%s\\\\n\" , outname ) ; ensure_filepath ( outname ) ; if ( chmd -> extract ( chmd , f [ i ] , outname ) ) { printf ( \"%s:<S2SV_blank>extract<S2SV_blank>error<S2SV_blank>on<S2SV_blank>\\\\\"%s\\\\\":<S2SV_blank>%s\\\\n\" , * argv , f [ i ] -> filename , ERROR ( chmd ) ) ; } free ( outname ) ; } free ( f ) ; } chmd -> close ( chmd , chm ) ; } else { printf ( \"%s:<S2SV_blank>can\\'t<S2SV_blank>open<S2SV_blank>--<S2SV_blank>%s\\\\n\" , * argv , ERROR ( chmd ) ) ; } } mspack_destroy_chm_decompressor ( chmd ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = create_output_name ( <S2SV_ModEnd> f [ i <S2SV_ModStart> ] -> filename <S2SV_ModEnd> ) ; printf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17942\n\n```\nCWE-119 static void test_function ( char * ( * my_asnprintf ) ( char * , size_t * , const char * , ... ) ) { char buf [ 8 ] ; int size ; for ( size = 0 ; size <= 8 ; size ++ ) { size_t length = size ; char * result = my_asnprintf ( NULL , & length , \"%d\" , 12345 ) ; ASSERT ( result != NULL ) ; ASSERT ( strcmp ( result , \"12345\" ) == 0 ) ; ASSERT ( length == 5 ) ; free ( result ) ; } for ( size = 0 ; size <= 8 ; size ++ ) { size_t length ; char * result ; memcpy ( buf , \"DEADBEEF\" , 8 ) ; length = size ; result = my_asnprintf ( buf , & length , \"%d\" , 12345 ) ; ASSERT ( result != NULL ) ; ASSERT ( strcmp ( result , \"12345\" ) == 0 ) ; ASSERT ( length == 5 ) ; <S2SV_StartBug> if ( size < 6 ) <S2SV_EndBug> ASSERT ( result != buf ) ; ASSERT ( memcmp ( buf + size , & \"DEADBEEF\" [ size ] , 8 - size ) == 0 ) ; if ( result != buf ) free ( result ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( size < 5 + 1 <S2SV_ModEnd> ) ASSERT ( <S2SV_ModStart> ) ; } for ( size = 0 ; size <= 8 ; size ++ ) { size_t length ; char * result ; memcpy ( buf , \"DEADBEEF\" , 8 ) ; length = size ; result = my_asnprintf ( buf , & length , \"%2.0f\" , 1.6314159265358979e+125 ) ; ASSERT ( result != NULL ) ; ASSERT ( strcmp ( result , \"163141592653589790215729350939528493057529598899734151772468186268423257777068536614838678161083520756952076273094236944990208\" ) == 0 ) ; ASSERT ( length == 126 ) ; if ( size < 126 + 1 ) ASSERT ( result != buf ) ; ASSERT ( memcmp ( buf + size , & \"DEADBEEF\" [ size ] , 8 - size ) == 0 ) ; if ( result != buf ) free ( result ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 char * selaGetCombName ( SELA * sela , l_int32 size , l_int32 direction ) { char * selname ; <S2SV_StartBug> char combname [ L_BUF_SIZE ] ; <S2SV_EndBug> l_int32 i , nsels , sx , sy , found ; SEL * sel ; PROCNAME ( \"selaGetCombName\" ) ; if ( ! sela ) return ( char * ) ERROR_PTR ( \"sela<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( direction != L_HORIZ && direction != L_VERT ) return ( char * ) ERROR_PTR ( \"invalid<S2SV_blank>direction\" , procName , NULL ) ; if ( direction == L_HORIZ ) <S2SV_StartBug> snprintf ( combname , L_BUF_SIZE , \"sel_comb_%dh\" , size ) ; <S2SV_EndBug> else <S2SV_StartBug> snprintf ( combname , L_BUF_SIZE , \"sel_comb_%dv\" , size ) ; <S2SV_EndBug> found = FALSE ; nsels = selaGetCount ( sela ) ; for ( i = 0 ; i < nsels ; i ++ ) { sel = selaGetSel ( sela , i ) ; selGetParameters ( sel , & sy , & sx , NULL , NULL ) ; if ( sy != 1 && sx != 1 ) continue ; selname = selGetName ( sel ) ; if ( ! strcmp ( selname , combname ) ) { found = TRUE ; break ; } } if ( found ) return stringNew ( selname ) ; else return ( char * ) ERROR_PTR ( \"sel<S2SV_blank>not<S2SV_blank>found\" , procName , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char combname [ L_BUFSIZE <S2SV_ModEnd> ] ; l_int32 <S2SV_ModStart> ( combname , L_BUFSIZE <S2SV_ModEnd> , \"sel_comb_%dh\" , <S2SV_ModStart> ( combname , L_BUFSIZE <S2SV_ModEnd> , \"sel_comb_%dv\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void update_switchable_interp_probs ( VP9_COMMON * cm , vp9_writer * w ) { <S2SV_EndBug> int j ; for ( j = 0 ; j < SWITCHABLE_FILTER_CONTEXTS ; ++ j ) prob_diff_update ( vp9_switchable_interp_tree , <S2SV_StartBug> cm -> fc . switchable_interp_prob [ j ] , <S2SV_EndBug> <S2SV_StartBug> cm -> counts . switchable_interp [ j ] , SWITCHABLE_FILTERS , w ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cm , vpx_writer * w , FRAME_COUNTS * counts <S2SV_ModEnd> ) { int <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> switchable_interp_prob [ j <S2SV_ModStart> j ] , counts -> <S2SV_ModEnd> switchable_interp [ j\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4951\n\n```\nCWE-000 int tipc_nl_publ_dump ( struct sk_buff * skb , struct netlink_callback * cb ) { int err ; u32 tsk_portid = cb -> args [ 0 ] ; u32 last_publ = cb -> args [ 1 ] ; u32 done = cb -> args [ 2 ] ; struct net * net = sock_net ( skb -> sk ) ; struct tipc_sock * tsk ; if ( ! tsk_portid ) { struct nlattr * * attrs ; struct nlattr * sock [ TIPC_NLA_SOCK_MAX + 1 ] ; err = tipc_nlmsg_parse ( cb -> nlh , & attrs ) ; if ( err ) return err ; <S2SV_StartBug> err = nla_parse_nested ( sock , TIPC_NLA_SOCK_MAX , <S2SV_EndBug> <S2SV_StartBug> attrs [ TIPC_NLA_SOCK ] , <S2SV_EndBug> tipc_nl_sock_policy ) ; if ( err ) return err ; if ( ! sock [ TIPC_NLA_SOCK_REF ] ) return - EINVAL ; <S2SV_StartBug> tsk_portid = nla_get_u32 ( sock [ TIPC_NLA_SOCK_REF ] ) ; <S2SV_EndBug> } if ( done ) return 0 ; tsk = tipc_sk_lookup ( net , tsk_portid ) ; if ( ! tsk ) return - EINVAL ; <S2SV_StartBug> lock_sock ( & tsk -> sk ) ; <S2SV_EndBug> err = __tipc_nl_list_sk_publ ( skb , cb , tsk , & last_publ ) ; if ( ! err ) done = 1 ; release_sock ( & tsk -> sk ) ; sock_put ( & tsk -> sk ) ; cb -> args [ 0 ] = tsk_portid ; cb -> args [ 1 ] = last_publ ; cb -> args [ 2 ] = done ; return skb -> len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return err ; if ( ! <S2SV_ModEnd> attrs [ TIPC_NLA_SOCK <S2SV_ModStart> attrs [ TIPC_NLA_SOCK <S2SV_ModEnd> ] ) return <S2SV_ModStart> - EINVAL ; err = nla_parse_nested ( sock , TIPC_NLA_SOCK_MAX , attrs [ TIPC_NLA_SOCK ] , tipc_nl_sock_policy ) ; if ( err ) return err ; if ( ! sock <S2SV_ModEnd> [ TIPC_NLA_SOCK_REF ] <S2SV_ModStart> [ TIPC_NLA_SOCK_REF ] <S2SV_ModEnd> ) return - <S2SV_ModStart> - EINVAL ; tsk_portid = nla_get_u32 ( sock [ TIPC_NLA_SOCK_REF ] ) ; } if ( done ) return 0 ; tsk = tipc_sk_lookup ( net , tsk_portid ) ; if ( ! tsk ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 int ext4_insert_range ( struct inode * inode , loff_t offset , loff_t len ) { struct super_block * sb = inode -> i_sb ; handle_t * handle ; struct ext4_ext_path * path ; struct ext4_extent * extent ; ext4_lblk_t offset_lblk , len_lblk , ee_start_lblk = 0 ; unsigned int credits , ee_len ; int ret = 0 , depth , split_flag = 0 ; loff_t ioffset ; if ( ! ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) return - EOPNOTSUPP ; if ( offset & ( EXT4_CLUSTER_SIZE ( sb ) - 1 ) || len & ( EXT4_CLUSTER_SIZE ( sb ) - 1 ) ) return - EINVAL ; if ( ! S_ISREG ( inode -> i_mode ) ) return - EOPNOTSUPP ; trace_ext4_insert_range ( inode , offset , len ) ; offset_lblk = offset >> EXT4_BLOCK_SIZE_BITS ( sb ) ; len_lblk = len >> EXT4_BLOCK_SIZE_BITS ( sb ) ; if ( ext4_should_journal_data ( inode ) ) { ret = ext4_force_commit ( inode -> i_sb ) ; if ( ret ) return ret ; } ioffset = round_down ( offset , PAGE_SIZE ) ; ret = filemap_write_and_wait_range ( inode -> i_mapping , ioffset , LLONG_MAX ) ; if ( ret ) return ret ; mutex_lock ( & inode -> i_mutex ) ; if ( ! ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) { ret = - EOPNOTSUPP ; goto out_mutex ; } if ( inode -> i_size + len > inode -> i_sb -> s_maxbytes ) { ret = - EFBIG ; goto out_mutex ; } if ( offset >= i_size_read ( inode ) ) { ret = - EINVAL ; goto out_mutex ; } <S2SV_StartBug> truncate_pagecache ( inode , ioffset ) ; <S2SV_EndBug> <S2SV_StartBug> ext4_inode_block_unlocked_dio ( inode ) ; <S2SV_EndBug> inode_dio_wait ( inode ) ; credits = ext4_writepage_trans_blocks ( inode ) ; handle = ext4_journal_start ( inode , EXT4_HT_TRUNCATE , credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; <S2SV_StartBug> goto out_dio ; <S2SV_EndBug> } inode -> i_size += len ; EXT4_I ( inode ) -> i_disksize += len ; inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; ret = ext4_mark_inode_dirty ( handle , inode ) ; if ( ret ) goto out_stop ; down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; ext4_discard_preallocations ( inode ) ; path = ext4_find_extent ( inode , offset_lblk , NULL , 0 ) ; if ( IS_ERR ( path ) ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } depth = ext_depth ( inode ) ; extent = path [ depth ] . p_ext ; if ( extent ) { ee_start_lblk = le32_to_cpu ( extent -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( extent ) ; if ( ( offset_lblk > ee_start_lblk ) && ( offset_lblk < ( ee_start_lblk + ee_len ) ) ) { if ( ext4_ext_is_unwritten ( extent ) ) split_flag = EXT4_EXT_MARK_UNWRIT1 | EXT4_EXT_MARK_UNWRIT2 ; ret = ext4_split_extent_at ( handle , inode , & path , offset_lblk , split_flag , EXT4_EX_NOCACHE | EXT4_GET_BLOCKS_PRE_IO | EXT4_GET_BLOCKS_METADATA_NOFAIL ) ; } ext4_ext_drop_refs ( path ) ; kfree ( path ) ; if ( ret < 0 ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } } ret = ext4_es_remove_extent ( inode , offset_lblk , EXT_MAX_BLOCKS - offset_lblk ) ; if ( ret ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } ret = ext4_ext_shift_extents ( inode , handle , ee_start_lblk > offset_lblk ? ee_start_lblk : offset_lblk , len_lblk , SHIFT_RIGHT ) ; up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( IS_SYNC ( inode ) ) ext4_handle_sync ( handle ) ; out_stop : ext4_journal_stop ( handle ) ; <S2SV_StartBug> out_dio : <S2SV_EndBug> ext4_inode_resume_unlocked_dio ( inode ) ; out_mutex : mutex_unlock ( & inode -> i_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_mutex ; } ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> ioffset ) ; <S2SV_ModEnd> credits = ext4_writepage_trans_blocks <S2SV_ModStart> ) ; goto out_mmap <S2SV_ModEnd> ; } inode <S2SV_ModStart> handle ) ; out_mmap : up_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModEnd> ext4_inode_resume_unlocked_dio ( inode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3353\n\n```\nCWE-120 static int fuse_notify_inval_entry ( struct fuse_conn * fc , unsigned int size , struct fuse_copy_state * cs ) { struct fuse_notify_inval_entry_out outarg ; int err = - ENOMEM ; char * buf ; struct qstr name ; buf = kzalloc ( FUSE_NAME_MAX + 1 , GFP_KERNEL ) ; if ( ! buf ) goto err ; err = - EINVAL ; if ( size < sizeof ( outarg ) ) goto err ; err = fuse_copy_one ( cs , & outarg , sizeof ( outarg ) ) ; if ( err ) goto err ; err = - ENAMETOOLONG ; if ( outarg . namelen > FUSE_NAME_MAX ) goto err ; <S2SV_StartBug> name . name = buf ; <S2SV_EndBug> name . len = outarg . namelen ; <S2SV_StartBug> err = fuse_copy_one ( cs , buf , outarg . namelen + 1 ) ; <S2SV_EndBug> if ( err ) goto err ; fuse_copy_finish ( cs ) ; buf [ outarg . namelen ] = 0 ; name . hash = full_name_hash ( name . name , name . len ) ; down_read ( & fc -> killsb ) ; err = - ENOENT ; if ( fc -> sb ) err = fuse_reverse_inval_entry ( fc -> sb , outarg . parent , & name ) ; up_read ( & fc -> killsb ) ; kfree ( buf ) ; return err ; err : kfree ( buf ) ; fuse_copy_finish ( cs ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto err ; err = - EINVAL ; if ( size != sizeof ( outarg ) + <S2SV_ModEnd> outarg . namelen <S2SV_ModStart> + 1 ) goto err ; name . name = buf ; name . len = outarg . namelen ; err = fuse_copy_one ( cs , buf , outarg . namelen + 1 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18710\n\n```\nCWE-200 static int cdrom_ioctl_select_disc ( struct cdrom_device_info * cdi , unsigned long arg ) { cd_dbg ( CD_DO_IOCTL , \"entering<S2SV_blank>CDROM_SELECT_DISC\\\\n\" ) ; if ( ! CDROM_CAN ( CDC_SELECT_DISC ) ) return - ENOSYS ; if ( arg != CDSL_CURRENT && arg != CDSL_NONE ) { <S2SV_StartBug> if ( ( int ) arg >= cdi -> capacity ) <S2SV_EndBug> return - EINVAL ; } if ( cdi -> ops -> select_disc ) return cdi -> ops -> select_disc ( cdi , arg ) ; cd_dbg ( CD_CHANGER , \"Using<S2SV_blank>generic<S2SV_blank>cdrom_select_disc()\\\\n\" ) ; return cdrom_select_disc ( cdi , arg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( <S2SV_ModEnd> arg >= cdi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3364\n\n```\nCWE-119 static int nci_extract_activation_params_iso_dep ( struct nci_dev * ndev , struct nci_rf_intf_activated_ntf * ntf , __u8 * data ) { struct activation_params_nfca_poll_iso_dep * nfca_poll ; struct activation_params_nfcb_poll_iso_dep * nfcb_poll ; switch ( ntf -> activation_rf_tech_and_mode ) { case NCI_NFC_A_PASSIVE_POLL_MODE : nfca_poll = & ntf -> activation_params . nfca_poll_iso_dep ; <S2SV_StartBug> nfca_poll -> rats_res_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"rats_res_len<S2SV_blank>%d\\\\n\" , nfca_poll -> rats_res_len ) ; if ( nfca_poll -> rats_res_len > 0 ) { memcpy ( nfca_poll -> rats_res , data , nfca_poll -> rats_res_len ) ; } break ; case NCI_NFC_B_PASSIVE_POLL_MODE : nfcb_poll = & ntf -> activation_params . nfcb_poll_iso_dep ; <S2SV_StartBug> nfcb_poll -> attrib_res_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"attrib_res_len<S2SV_blank>%d\\\\n\" , nfcb_poll -> attrib_res_len ) ; if ( nfcb_poll -> attrib_res_len > 0 ) { memcpy ( nfcb_poll -> attrib_res , data , nfcb_poll -> attrib_res_len ) ; } break ; default : pr_err ( \"unsupported<S2SV_blank>activation_rf_tech_and_mode<S2SV_blank>0x%x\\\\n\" , ntf -> activation_rf_tech_and_mode ) ; return NCI_STATUS_RF_PROTOCOL_ERROR ; } return NCI_STATUS_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rats_res_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , 20 ) <S2SV_ModStart> -> attrib_res_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , 50 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4578\n\n```\nCWE-200 static void snd_timer_user_tinterrupt ( struct snd_timer_instance * timeri , unsigned long resolution , unsigned long ticks ) { struct snd_timer_user * tu = timeri -> callback_data ; struct snd_timer_tread * r , r1 ; struct timespec tstamp ; int prev , append = 0 ; memset ( & tstamp , 0 , sizeof ( tstamp ) ) ; spin_lock ( & tu -> qlock ) ; if ( ( tu -> filter & ( ( 1 << SNDRV_TIMER_EVENT_RESOLUTION ) | ( 1 << SNDRV_TIMER_EVENT_TICK ) ) ) == 0 ) { spin_unlock ( & tu -> qlock ) ; return ; } if ( tu -> last_resolution != resolution || ticks > 0 ) { if ( timer_tstamp_monotonic ) ktime_get_ts ( & tstamp ) ; else getnstimeofday ( & tstamp ) ; } if ( ( tu -> filter & ( 1 << SNDRV_TIMER_EVENT_RESOLUTION ) ) && tu -> last_resolution != resolution ) { <S2SV_StartBug> r1 . event = SNDRV_TIMER_EVENT_RESOLUTION ; <S2SV_EndBug> r1 . tstamp = tstamp ; r1 . val = resolution ; snd_timer_user_append_to_tqueue ( tu , & r1 ) ; tu -> last_resolution = resolution ; append ++ ; } if ( ( tu -> filter & ( 1 << SNDRV_TIMER_EVENT_TICK ) ) == 0 ) goto __wake ; if ( ticks == 0 ) goto __wake ; if ( tu -> qused > 0 ) { prev = tu -> qtail == 0 ? tu -> queue_size - 1 : tu -> qtail - 1 ; r = & tu -> tqueue [ prev ] ; if ( r -> event == SNDRV_TIMER_EVENT_TICK ) { r -> tstamp = tstamp ; r -> val += ticks ; append ++ ; goto __wake ; } } r1 . event = SNDRV_TIMER_EVENT_TICK ; r1 . tstamp = tstamp ; r1 . val = ticks ; snd_timer_user_append_to_tqueue ( tu , & r1 ) ; append ++ ; __wake : spin_unlock ( & tu -> qlock ) ; if ( append == 0 ) return ; kill_fasync ( & tu -> fasync , SIGIO , POLL_IN ) ; wake_up ( & tu -> qchange_sleep ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> resolution ) { memset ( & r1 , 0 , sizeof ( r1 ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15917\n\n```\nCWE-416 static int hci_uart_set_proto ( struct hci_uart * hu , int id ) { const struct hci_uart_proto * p ; int err ; p = hci_uart_get_proto ( id ) ; if ( ! p ) return - EPROTONOSUPPORT ; hu -> proto = p ; <S2SV_StartBug> set_bit ( HCI_UART_PROTO_READY , & hu -> flags ) ; <S2SV_EndBug> err = hci_uart_register_dev ( hu ) ; if ( err ) { <S2SV_StartBug> clear_bit ( HCI_UART_PROTO_READY , & hu -> flags ) ; <S2SV_EndBug> <S2SV_StartBug> return err ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = p ; <S2SV_ModEnd> err = hci_uart_register_dev <S2SV_ModStart> err ) { return err ; } set_bit <S2SV_ModEnd> ( HCI_UART_PROTO_READY , <S2SV_ModStart> ) ; return <S2SV_ModEnd> 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void mt_decode_mb_rows ( VP8D_COMP * pbi , MACROBLOCKD * xd , int start_mb_row ) { volatile const int * last_row_current_mb_col ; volatile int * current_mb_col ; int mb_row ; VP8_COMMON * pc = & pbi -> common ; const int nsync = pbi -> sync_range ; const int first_row_no_sync_above = pc -> mb_cols + nsync ; int num_part = 1 << pbi -> common . multi_token_partition ; int last_mb_row = start_mb_row ; YV12_BUFFER_CONFIG * yv12_fb_new = pbi -> dec_fb_ref [ INTRA_FRAME ] ; YV12_BUFFER_CONFIG * yv12_fb_lst = pbi -> dec_fb_ref [ LAST_FRAME ] ; int recon_y_stride = yv12_fb_new -> y_stride ; int recon_uv_stride = yv12_fb_new -> uv_stride ; unsigned char * ref_buffer [ MAX_REF_FRAMES ] [ 3 ] ; unsigned char * dst_buffer [ 3 ] ; int i ; int ref_fb_corrupted [ MAX_REF_FRAMES ] ; ref_fb_corrupted [ INTRA_FRAME ] = 0 ; for ( i = 1 ; i < MAX_REF_FRAMES ; i ++ ) { YV12_BUFFER_CONFIG * this_fb = pbi -> dec_fb_ref [ i ] ; ref_buffer [ i ] [ 0 ] = this_fb -> y_buffer ; ref_buffer [ i ] [ 1 ] = this_fb -> u_buffer ; ref_buffer [ i ] [ 2 ] = this_fb -> v_buffer ; ref_fb_corrupted [ i ] = this_fb -> corrupted ; } dst_buffer [ 0 ] = yv12_fb_new -> y_buffer ; dst_buffer [ 1 ] = yv12_fb_new -> u_buffer ; dst_buffer [ 2 ] = yv12_fb_new -> v_buffer ; xd -> up_available = ( start_mb_row != 0 ) ; for ( mb_row = start_mb_row ; mb_row < pc -> mb_rows ; mb_row += ( pbi -> decoding_thread_count + 1 ) ) { int recon_yoffset , recon_uvoffset ; int mb_col ; int filter_level ; loop_filter_info_n * lfi_n = & pc -> lf_info ; last_mb_row = mb_row ; xd -> current_bc = & pbi -> mbc [ mb_row % num_part ] ; if ( mb_row > 0 ) last_row_current_mb_col = & pbi -> mt_current_mb_col [ mb_row - 1 ] ; else last_row_current_mb_col = & first_row_no_sync_above ; current_mb_col = & pbi -> mt_current_mb_col [ mb_row ] ; recon_yoffset = mb_row * recon_y_stride * 16 ; recon_uvoffset = mb_row * recon_uv_stride * 8 ; xd -> above_context = pc -> above_context ; <S2SV_StartBug> vpx_memset ( xd -> left_context , 0 , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> xd -> left_available = 0 ; xd -> mb_to_top_edge = - ( ( mb_row * 16 ) ) << 3 ; xd -> mb_to_bottom_edge = ( ( pc -> mb_rows - 1 - mb_row ) * 16 ) << 3 ; if ( pbi -> common . filter_level ) { xd -> recon_above [ 0 ] = pbi -> mt_yabove_row [ mb_row ] + 0 * 16 + 32 ; xd -> recon_above [ 1 ] = pbi -> mt_uabove_row [ mb_row ] + 0 * 8 + 16 ; xd -> recon_above [ 2 ] = pbi -> mt_vabove_row [ mb_row ] + 0 * 8 + 16 ; xd -> recon_left [ 0 ] = pbi -> mt_yleft_col [ mb_row ] ; xd -> recon_left [ 1 ] = pbi -> mt_uleft_col [ mb_row ] ; xd -> recon_left [ 2 ] = pbi -> mt_vleft_col [ mb_row ] ; xd -> recon_left_stride [ 0 ] = 1 ; xd -> recon_left_stride [ 1 ] = 1 ; } else { xd -> recon_above [ 0 ] = dst_buffer [ 0 ] + recon_yoffset ; xd -> recon_above [ 1 ] = dst_buffer [ 1 ] + recon_uvoffset ; xd -> recon_above [ 2 ] = dst_buffer [ 2 ] + recon_uvoffset ; xd -> recon_left [ 0 ] = xd -> recon_above [ 0 ] - 1 ; xd -> recon_left [ 1 ] = xd -> recon_above [ 1 ] - 1 ; xd -> recon_left [ 2 ] = xd -> recon_above [ 2 ] - 1 ; xd -> recon_above [ 0 ] -= xd -> dst . y_stride ; xd -> recon_above [ 1 ] -= xd -> dst . uv_stride ; xd -> recon_above [ 2 ] -= xd -> dst . uv_stride ; xd -> recon_left_stride [ 0 ] = xd -> dst . y_stride ; xd -> recon_left_stride [ 1 ] = xd -> dst . uv_stride ; setup_intra_recon_left ( xd -> recon_left [ 0 ] , xd -> recon_left [ 1 ] , xd -> recon_left [ 2 ] , xd -> dst . y_stride , xd -> dst . uv_stride ) ; } for ( mb_col = 0 ; mb_col < pc -> mb_cols ; mb_col ++ ) { * current_mb_col = mb_col - 1 ; if ( ( mb_col & ( nsync - 1 ) ) == 0 ) { while ( mb_col > ( * last_row_current_mb_col - nsync ) ) { x86_pause_hint ( ) ; thread_sleep ( 0 ) ; } } xd -> mb_to_left_edge = - ( ( mb_col * 16 ) << 3 ) ; xd -> mb_to_right_edge = ( ( pc -> mb_cols - 1 - mb_col ) * 16 ) << 3 ; # if CONFIG_ERROR_CONCEALMENT { int corrupt_residual = ( ! pbi -> independent_partitions && pbi -> frame_corrupt_residual ) || vp8dx_bool_error ( xd -> current_bc ) ; if ( pbi -> ec_active && ( xd -> mode_info_context -> mbmi . ref_frame == INTRA_FRAME ) && corrupt_residual ) { vp8_interpolate_motion ( xd , mb_row , mb_col , pc -> mb_rows , pc -> mb_cols , pc -> mode_info_stride ) ; } } # endif xd -> dst . y_buffer = dst_buffer [ 0 ] + recon_yoffset ; xd -> dst . u_buffer = dst_buffer [ 1 ] + recon_uvoffset ; xd -> dst . v_buffer = dst_buffer [ 2 ] + recon_uvoffset ; xd -> pre . y_buffer = ref_buffer [ xd -> mode_info_context -> mbmi . ref_frame ] [ 0 ] + recon_yoffset ; xd -> pre . u_buffer = ref_buffer [ xd -> mode_info_context -> mbmi . ref_frame ] [ 1 ] + recon_uvoffset ; xd -> pre . v_buffer = ref_buffer [ xd -> mode_info_context -> mbmi . ref_frame ] [ 2 ] + recon_uvoffset ; xd -> corrupted |= ref_fb_corrupted [ xd -> mode_info_context -> mbmi . ref_frame ] ; mt_decode_macroblock ( pbi , xd , 0 ) ; xd -> left_available = 1 ; xd -> corrupted |= vp8dx_bool_error ( xd -> current_bc ) ; xd -> recon_above [ 0 ] += 16 ; xd -> recon_above [ 1 ] += 8 ; xd -> recon_above [ 2 ] += 8 ; if ( ! pbi -> common . filter_level ) { xd -> recon_left [ 0 ] += 16 ; xd -> recon_left [ 1 ] += 8 ; xd -> recon_left [ 2 ] += 8 ; } if ( pbi -> common . filter_level ) { int skip_lf = ( xd -> mode_info_context -> mbmi . mode != B_PRED && xd -> mode_info_context -> mbmi . mode != SPLITMV && xd -> mode_info_context -> mbmi . mb_skip_coeff ) ; const int mode_index = lfi_n -> mode_lf_lut [ xd -> mode_info_context -> mbmi . mode ] ; const int seg = xd -> mode_info_context -> mbmi . segment_id ; const int ref_frame = xd -> mode_info_context -> mbmi . ref_frame ; filter_level = lfi_n -> lvl [ seg ] [ ref_frame ] [ mode_index ] ; if ( mb_row != pc -> mb_rows - 1 ) { <S2SV_StartBug> vpx_memcpy ( ( pbi -> mt_yabove_row [ mb_row + 1 ] + 32 + mb_col * 16 ) , ( xd -> dst . y_buffer + 15 * recon_y_stride ) , 16 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( ( pbi -> mt_uabove_row [ mb_row + 1 ] + 16 + mb_col * 8 ) , ( xd -> dst . u_buffer + 7 * recon_uv_stride ) , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( ( pbi -> mt_vabove_row [ mb_row + 1 ] + 16 + mb_col * 8 ) , ( xd -> dst . v_buffer + 7 * recon_uv_stride ) , 8 ) ; <S2SV_EndBug> } if ( mb_col != pc -> mb_cols - 1 ) { MODE_INFO * next = xd -> mode_info_context + 1 ; if ( next -> mbmi . ref_frame == INTRA_FRAME ) { for ( i = 0 ; i < 16 ; i ++ ) pbi -> mt_yleft_col [ mb_row ] [ i ] = xd -> dst . y_buffer [ i * recon_y_stride + 15 ] ; for ( i = 0 ; i < 8 ; i ++ ) { pbi -> mt_uleft_col [ mb_row ] [ i ] = xd -> dst . u_buffer [ i * recon_uv_stride + 7 ] ; pbi -> mt_vleft_col [ mb_row ] [ i ] = xd -> dst . v_buffer [ i * recon_uv_stride + 7 ] ; } } } if ( filter_level ) { if ( pc -> filter_type == NORMAL_LOOPFILTER ) { loop_filter_info lfi ; FRAME_TYPE frame_type = pc -> frame_type ; const int hev_index = lfi_n -> hev_thr_lut [ frame_type ] [ filter_level ] ; lfi . mblim = lfi_n -> mblim [ filter_level ] ; lfi . blim = lfi_n -> blim [ filter_level ] ; lfi . lim = lfi_n -> lim [ filter_level ] ; lfi . hev_thr = lfi_n -> hev_thr [ hev_index ] ; if ( mb_col > 0 ) vp8_loop_filter_mbv ( xd -> dst . y_buffer , xd -> dst . u_buffer , xd -> dst . v_buffer , recon_y_stride , recon_uv_stride , & lfi ) ; if ( ! skip_lf ) vp8_loop_filter_bv ( xd -> dst . y_buffer , xd -> dst . u_buffer , xd -> dst . v_buffer , recon_y_stride , recon_uv_stride , & lfi ) ; if ( mb_row > 0 ) vp8_loop_filter_mbh ( xd -> dst . y_buffer , xd -> dst . u_buffer , xd -> dst . v_buffer , recon_y_stride , recon_uv_stride , & lfi ) ; if ( ! skip_lf ) vp8_loop_filter_bh ( xd -> dst . y_buffer , xd -> dst . u_buffer , xd -> dst . v_buffer , recon_y_stride , recon_uv_stride , & lfi ) ; } else { if ( mb_col > 0 ) vp8_loop_filter_simple_mbv ( xd -> dst . y_buffer , recon_y_stride , lfi_n -> mblim [ filter_level ] ) ; if ( ! skip_lf ) vp8_loop_filter_simple_bv ( xd -> dst . y_buffer , recon_y_stride , lfi_n -> blim [ filter_level ] ) ; if ( mb_row > 0 ) vp8_loop_filter_simple_mbh ( xd -> dst . y_buffer , recon_y_stride , lfi_n -> mblim [ filter_level ] ) ; if ( ! skip_lf ) vp8_loop_filter_simple_bh ( xd -> dst . y_buffer , recon_y_stride , lfi_n -> blim [ filter_level ] ) ; } } } recon_yoffset += 16 ; recon_uvoffset += 8 ; ++ xd -> mode_info_context ; xd -> above_context ++ ; } if ( pbi -> common . filter_level ) { if ( mb_row != pc -> mb_rows - 1 ) { int lasty = yv12_fb_lst -> y_width + VP8BORDERINPIXELS ; int lastuv = ( yv12_fb_lst -> y_width >> 1 ) + ( VP8BORDERINPIXELS >> 1 ) ; for ( i = 0 ; i < 4 ; i ++ ) { pbi -> mt_yabove_row [ mb_row + 1 ] [ lasty + i ] = pbi -> mt_yabove_row [ mb_row + 1 ] [ lasty - 1 ] ; pbi -> mt_uabove_row [ mb_row + 1 ] [ lastuv + i ] = pbi -> mt_uabove_row [ mb_row + 1 ] [ lastuv - 1 ] ; pbi -> mt_vabove_row [ mb_row + 1 ] [ lastuv + i ] = pbi -> mt_vabove_row [ mb_row + 1 ] [ lastuv - 1 ] ; } } } else vp8_extend_mb_row ( yv12_fb_new , xd -> dst . y_buffer + 16 , xd -> dst . u_buffer + 8 , xd -> dst . v_buffer + 8 ) ; * current_mb_col = mb_col + nsync ; ++ xd -> mode_info_context ; xd -> up_available = 1 ; xd -> mode_info_context += xd -> mode_info_stride * pbi -> decoding_thread_count ; } if ( last_mb_row == ( pc -> mb_rows - 1 ) ) sem_post ( & pbi -> h_event_end_decoding ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> above_context ; memset <S2SV_ModEnd> ( xd -> <S2SV_ModStart> 1 ) { memcpy <S2SV_ModEnd> ( ( pbi <S2SV_ModStart> 16 ) ; memcpy <S2SV_ModEnd> ( ( pbi <S2SV_ModStart> 8 ) ; memcpy <S2SV_ModEnd> ( ( pbi\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static PyTypeObject * make_type ( char * type , PyTypeObject * base , char * * fields , int num_fields ) <S2SV_StartBug> { <S2SV_EndBug> PyObject * fnames , * result ; int i ; fnames = PyTuple_New ( num_fields ) ; if ( ! fnames ) return NULL ; for ( i = 0 ; i < num_fields ; i ++ ) { PyObject * field = PyUnicode_FromString ( fields [ i ] ) ; if ( ! field ) { Py_DECREF ( fnames ) ; return NULL ; } PyTuple_SET_ITEM ( fnames , i , field ) ; } <S2SV_StartBug> result = PyObject_CallFunction ( ( PyObject * ) & PyType_Type , \"s(O){sOss}\" , <S2SV_EndBug> <S2SV_StartBug> type , base , \"_fields\" , fnames , \"__module__\" , \"_ast3\" ) ; <S2SV_EndBug> Py_DECREF ( fnames ) ; return ( PyTypeObject * ) result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> num_fields ) { _Py_IDENTIFIER ( __module__ ) ; _Py_IDENTIFIER ( _ast3 ) ; <S2SV_ModStart> & PyType_Type , \"s(O){OOOO}\" <S2SV_ModEnd> , type , <S2SV_ModStart> , base , _PyUnicode_FromId ( & PyId__fields ) <S2SV_ModEnd> , fnames , <S2SV_ModStart> , fnames , _PyUnicode_FromId ( & PyId___module__ ) , _PyUnicode_FromId ( & PyId__ast3 ) <S2SV_ModEnd> ) ; Py_DECREF\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0038\n\n```\nCWE-189 STATIC struct posix_acl * xfs_acl_from_disk ( struct xfs_acl * aclp ) { struct posix_acl_entry * acl_e ; struct posix_acl * acl ; struct xfs_acl_entry * ace ; int count , i ; <S2SV_StartBug> count = be32_to_cpu ( aclp -> acl_cnt ) ; <S2SV_EndBug> acl = posix_acl_alloc ( count , GFP_KERNEL ) ; if ( ! acl ) return ERR_PTR ( - ENOMEM ) ; for ( i = 0 ; i < count ; i ++ ) { acl_e = & acl -> a_entries [ i ] ; ace = & aclp -> acl_entry [ i ] ; acl_e -> e_tag = be32_to_cpu ( ace -> ae_tag ) ; acl_e -> e_perm = be16_to_cpu ( ace -> ae_perm ) ; switch ( acl_e -> e_tag ) { case ACL_USER : case ACL_GROUP : acl_e -> e_id = be32_to_cpu ( ace -> ae_id ) ; break ; case ACL_USER_OBJ : case ACL_GROUP_OBJ : case ACL_MASK : case ACL_OTHER : acl_e -> e_id = ACL_UNDEFINED_ID ; break ; default : goto fail ; } } return acl ; fail : posix_acl_release ( acl ) ; return ERR_PTR ( - EINVAL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> aclp -> acl_cnt ) ; if ( count > XFS_ACL_MAX_ENTRIES ) return ERR_PTR ( - EFSCORRUPTED\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11338\n\n```\nCWE-476 static int hls_slice_header ( HEVCContext * s ) { GetBitContext * gb = & s -> HEVClc -> gb ; SliceHeader * sh = & s -> sh ; int i , ret ; <S2SV_StartBug> sh -> first_slice_in_pic_flag = get_bits1 ( gb ) ; <S2SV_EndBug> if ( ( IS_IDR ( s ) || IS_BLA ( s ) ) && sh -> first_slice_in_pic_flag ) { s -> seq_decode = ( s -> seq_decode + 1 ) & 0xff ; s -> max_ra = INT_MAX ; if ( IS_IDR ( s ) ) ff_hevc_clear_refs ( s ) ; } sh -> no_output_of_prior_pics_flag = 0 ; if ( IS_IRAP ( s ) ) sh -> no_output_of_prior_pics_flag = get_bits1 ( gb ) ; sh -> pps_id = get_ue_golomb_long ( gb ) ; if ( sh -> pps_id >= HEVC_MAX_PPS_COUNT || ! s -> ps . pps_list [ sh -> pps_id ] ) { av_log ( s -> avctx , AV_LOG_ERROR , \"PPS<S2SV_blank>id<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range:<S2SV_blank>%d\\\\n\" , sh -> pps_id ) ; return AVERROR_INVALIDDATA ; } if ( ! sh -> first_slice_in_pic_flag && s -> ps . pps != ( HEVCPPS * ) s -> ps . pps_list [ sh -> pps_id ] -> data ) { av_log ( s -> avctx , AV_LOG_ERROR , \"PPS<S2SV_blank>changed<S2SV_blank>between<S2SV_blank>slices.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> ps . pps = ( HEVCPPS * ) s -> ps . pps_list [ sh -> pps_id ] -> data ; if ( s -> nal_unit_type == HEVC_NAL_CRA_NUT && s -> last_eos == 1 ) sh -> no_output_of_prior_pics_flag = 1 ; if ( s -> ps . sps != ( HEVCSPS * ) s -> ps . sps_list [ s -> ps . pps -> sps_id ] -> data ) { const HEVCSPS * sps = ( HEVCSPS * ) s -> ps . sps_list [ s -> ps . pps -> sps_id ] -> data ; const HEVCSPS * last_sps = s -> ps . sps ; enum AVPixelFormat pix_fmt ; if ( last_sps && IS_IRAP ( s ) && s -> nal_unit_type != HEVC_NAL_CRA_NUT ) { if ( sps -> width != last_sps -> width || sps -> height != last_sps -> height || sps -> temporal_layer [ sps -> max_sub_layers - 1 ] . max_dec_pic_buffering != last_sps -> temporal_layer [ last_sps -> max_sub_layers - 1 ] . max_dec_pic_buffering ) sh -> no_output_of_prior_pics_flag = 0 ; } ff_hevc_clear_refs ( s ) ; ret = set_sps ( s , sps , sps -> pix_fmt ) ; if ( ret < 0 ) return ret ; pix_fmt = get_format ( s , sps ) ; if ( pix_fmt < 0 ) return pix_fmt ; s -> avctx -> pix_fmt = pix_fmt ; s -> seq_decode = ( s -> seq_decode + 1 ) & 0xff ; s -> max_ra = INT_MAX ; } sh -> dependent_slice_segment_flag = 0 ; if ( ! sh -> first_slice_in_pic_flag ) { int slice_address_length ; if ( s -> ps . pps -> dependent_slice_segments_enabled_flag ) sh -> dependent_slice_segment_flag = get_bits1 ( gb ) ; slice_address_length = av_ceil_log2 ( s -> ps . sps -> ctb_width * s -> ps . sps -> ctb_height ) ; sh -> slice_segment_addr = get_bitsz ( gb , slice_address_length ) ; if ( sh -> slice_segment_addr >= s -> ps . sps -> ctb_width * s -> ps . sps -> ctb_height ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>slice<S2SV_blank>segment<S2SV_blank>address:<S2SV_blank>%u.\\\\n\" , sh -> slice_segment_addr ) ; return AVERROR_INVALIDDATA ; } if ( ! sh -> dependent_slice_segment_flag ) { sh -> slice_addr = sh -> slice_segment_addr ; s -> slice_idx ++ ; } } else { sh -> slice_segment_addr = sh -> slice_addr = 0 ; s -> slice_idx = 0 ; s -> slice_initialized = 0 ; } if ( ! sh -> dependent_slice_segment_flag ) { s -> slice_initialized = 0 ; for ( i = 0 ; i < s -> ps . pps -> num_extra_slice_header_bits ; i ++ ) skip_bits ( gb , 1 ) ; sh -> slice_type = get_ue_golomb_long ( gb ) ; if ( ! ( sh -> slice_type == HEVC_SLICE_I || sh -> slice_type == HEVC_SLICE_P || sh -> slice_type == HEVC_SLICE_B ) ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>slice<S2SV_blank>type:<S2SV_blank>%d.\\\\n\" , sh -> slice_type ) ; return AVERROR_INVALIDDATA ; } if ( IS_IRAP ( s ) && sh -> slice_type != HEVC_SLICE_I ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Inter<S2SV_blank>slices<S2SV_blank>in<S2SV_blank>an<S2SV_blank>IRAP<S2SV_blank>frame.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } sh -> pic_output_flag = 1 ; if ( s -> ps . pps -> output_flag_present_flag ) sh -> pic_output_flag = get_bits1 ( gb ) ; if ( s -> ps . sps -> separate_colour_plane_flag ) sh -> colour_plane_id = get_bits ( gb , 2 ) ; if ( ! IS_IDR ( s ) ) { int poc , pos ; sh -> pic_order_cnt_lsb = get_bits ( gb , s -> ps . sps -> log2_max_poc_lsb ) ; poc = ff_hevc_compute_poc ( s -> ps . sps , s -> pocTid0 , sh -> pic_order_cnt_lsb , s -> nal_unit_type ) ; if ( ! sh -> first_slice_in_pic_flag && poc != s -> poc ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Ignoring<S2SV_blank>POC<S2SV_blank>change<S2SV_blank>between<S2SV_blank>slices:<S2SV_blank>%d<S2SV_blank>-><S2SV_blank>%d\\\\n\" , s -> poc , poc ) ; if ( s -> avctx -> err_recognition & AV_EF_EXPLODE ) return AVERROR_INVALIDDATA ; poc = s -> poc ; } s -> poc = poc ; sh -> short_term_ref_pic_set_sps_flag = get_bits1 ( gb ) ; pos = get_bits_left ( gb ) ; if ( ! sh -> short_term_ref_pic_set_sps_flag ) { ret = ff_hevc_decode_short_term_rps ( gb , s -> avctx , & sh -> slice_rps , s -> ps . sps , 1 ) ; if ( ret < 0 ) return ret ; sh -> short_term_rps = & sh -> slice_rps ; } else { int numbits , rps_idx ; if ( ! s -> ps . sps -> nb_st_rps ) { av_log ( s -> avctx , AV_LOG_ERROR , \"No<S2SV_blank>ref<S2SV_blank>lists<S2SV_blank>in<S2SV_blank>the<S2SV_blank>SPS.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } numbits = av_ceil_log2 ( s -> ps . sps -> nb_st_rps ) ; rps_idx = numbits > 0 ? get_bits ( gb , numbits ) : 0 ; sh -> short_term_rps = & s -> ps . sps -> st_rps [ rps_idx ] ; } sh -> short_term_ref_pic_set_size = pos - get_bits_left ( gb ) ; pos = get_bits_left ( gb ) ; ret = decode_lt_rps ( s , & sh -> long_term_rps , gb ) ; if ( ret < 0 ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Invalid<S2SV_blank>long<S2SV_blank>term<S2SV_blank>RPS.\\\\n\" ) ; if ( s -> avctx -> err_recognition & AV_EF_EXPLODE ) return AVERROR_INVALIDDATA ; } sh -> long_term_ref_pic_set_size = pos - get_bits_left ( gb ) ; if ( s -> ps . sps -> sps_temporal_mvp_enabled_flag ) sh -> slice_temporal_mvp_enabled_flag = get_bits1 ( gb ) ; else sh -> slice_temporal_mvp_enabled_flag = 0 ; } else { s -> sh . short_term_rps = NULL ; s -> poc = 0 ; } if ( sh -> first_slice_in_pic_flag && s -> temporal_id == 0 && s -> nal_unit_type != HEVC_NAL_TRAIL_N && s -> nal_unit_type != HEVC_NAL_TSA_N && s -> nal_unit_type != HEVC_NAL_STSA_N && s -> nal_unit_type != HEVC_NAL_RADL_N && s -> nal_unit_type != HEVC_NAL_RADL_R && s -> nal_unit_type != HEVC_NAL_RASL_N && s -> nal_unit_type != HEVC_NAL_RASL_R ) s -> pocTid0 = s -> poc ; if ( s -> ps . sps -> sao_enabled ) { sh -> slice_sample_adaptive_offset_flag [ 0 ] = get_bits1 ( gb ) ; if ( s -> ps . sps -> chroma_format_idc ) { sh -> slice_sample_adaptive_offset_flag [ 1 ] = sh -> slice_sample_adaptive_offset_flag [ 2 ] = get_bits1 ( gb ) ; } } else { sh -> slice_sample_adaptive_offset_flag [ 0 ] = 0 ; sh -> slice_sample_adaptive_offset_flag [ 1 ] = 0 ; sh -> slice_sample_adaptive_offset_flag [ 2 ] = 0 ; } sh -> nb_refs [ L0 ] = sh -> nb_refs [ L1 ] = 0 ; if ( sh -> slice_type == HEVC_SLICE_P || sh -> slice_type == HEVC_SLICE_B ) { int nb_refs ; sh -> nb_refs [ L0 ] = s -> ps . pps -> num_ref_idx_l0_default_active ; if ( sh -> slice_type == HEVC_SLICE_B ) sh -> nb_refs [ L1 ] = s -> ps . pps -> num_ref_idx_l1_default_active ; if ( get_bits1 ( gb ) ) { sh -> nb_refs [ L0 ] = get_ue_golomb_long ( gb ) + 1 ; if ( sh -> slice_type == HEVC_SLICE_B ) sh -> nb_refs [ L1 ] = get_ue_golomb_long ( gb ) + 1 ; } if ( sh -> nb_refs [ L0 ] > HEVC_MAX_REFS || sh -> nb_refs [ L1 ] > HEVC_MAX_REFS ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Too<S2SV_blank>many<S2SV_blank>refs:<S2SV_blank>%d/%d.\\\\n\" , sh -> nb_refs [ L0 ] , sh -> nb_refs [ L1 ] ) ; return AVERROR_INVALIDDATA ; } sh -> rpl_modification_flag [ 0 ] = 0 ; sh -> rpl_modification_flag [ 1 ] = 0 ; nb_refs = ff_hevc_frame_nb_refs ( s ) ; if ( ! nb_refs ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Zero<S2SV_blank>refs<S2SV_blank>for<S2SV_blank>a<S2SV_blank>frame<S2SV_blank>with<S2SV_blank>P<S2SV_blank>or<S2SV_blank>B<S2SV_blank>slices.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( s -> ps . pps -> lists_modification_present_flag && nb_refs > 1 ) { sh -> rpl_modification_flag [ 0 ] = get_bits1 ( gb ) ; if ( sh -> rpl_modification_flag [ 0 ] ) { for ( i = 0 ; i < sh -> nb_refs [ L0 ] ; i ++ ) sh -> list_entry_lx [ 0 ] [ i ] = get_bits ( gb , av_ceil_log2 ( nb_refs ) ) ; } if ( sh -> slice_type == HEVC_SLICE_B ) { sh -> rpl_modification_flag [ 1 ] = get_bits1 ( gb ) ; if ( sh -> rpl_modification_flag [ 1 ] == 1 ) for ( i = 0 ; i < sh -> nb_refs [ L1 ] ; i ++ ) sh -> list_entry_lx [ 1 ] [ i ] = get_bits ( gb , av_ceil_log2 ( nb_refs ) ) ; } } if ( sh -> slice_type == HEVC_SLICE_B ) sh -> mvd_l1_zero_flag = get_bits1 ( gb ) ; if ( s -> ps . pps -> cabac_init_present_flag ) sh -> cabac_init_flag = get_bits1 ( gb ) ; else sh -> cabac_init_flag = 0 ; sh -> collocated_ref_idx = 0 ; if ( sh -> slice_temporal_mvp_enabled_flag ) { sh -> collocated_list = L0 ; if ( sh -> slice_type == HEVC_SLICE_B ) sh -> collocated_list = ! get_bits1 ( gb ) ; if ( sh -> nb_refs [ sh -> collocated_list ] > 1 ) { sh -> collocated_ref_idx = get_ue_golomb_long ( gb ) ; if ( sh -> collocated_ref_idx >= sh -> nb_refs [ sh -> collocated_list ] ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>collocated_ref_idx:<S2SV_blank>%d.\\\\n\" , sh -> collocated_ref_idx ) ; return AVERROR_INVALIDDATA ; } } } if ( ( s -> ps . pps -> weighted_pred_flag && sh -> slice_type == HEVC_SLICE_P ) || ( s -> ps . pps -> weighted_bipred_flag && sh -> slice_type == HEVC_SLICE_B ) ) { int ret = pred_weight_table ( s , gb ) ; if ( ret < 0 ) return ret ; } sh -> max_num_merge_cand = 5 - get_ue_golomb_long ( gb ) ; if ( sh -> max_num_merge_cand < 1 || sh -> max_num_merge_cand > 5 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>merging<S2SV_blank>MVP<S2SV_blank>candidates:<S2SV_blank>%d.\\\\n\" , sh -> max_num_merge_cand ) ; return AVERROR_INVALIDDATA ; } } sh -> slice_qp_delta = get_se_golomb ( gb ) ; if ( s -> ps . pps -> pic_slice_level_chroma_qp_offsets_present_flag ) { sh -> slice_cb_qp_offset = get_se_golomb ( gb ) ; sh -> slice_cr_qp_offset = get_se_golomb ( gb ) ; } else { sh -> slice_cb_qp_offset = 0 ; sh -> slice_cr_qp_offset = 0 ; } if ( s -> ps . pps -> chroma_qp_offset_list_enabled_flag ) sh -> cu_chroma_qp_offset_enabled_flag = get_bits1 ( gb ) ; else sh -> cu_chroma_qp_offset_enabled_flag = 0 ; if ( s -> ps . pps -> deblocking_filter_control_present_flag ) { int deblocking_filter_override_flag = 0 ; if ( s -> ps . pps -> deblocking_filter_override_enabled_flag ) deblocking_filter_override_flag = get_bits1 ( gb ) ; if ( deblocking_filter_override_flag ) { sh -> disable_deblocking_filter_flag = get_bits1 ( gb ) ; if ( ! sh -> disable_deblocking_filter_flag ) { int beta_offset_div2 = get_se_golomb ( gb ) ; int tc_offset_div2 = get_se_golomb ( gb ) ; if ( beta_offset_div2 < - 6 || beta_offset_div2 > 6 || tc_offset_div2 < - 6 || tc_offset_div2 > 6 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>deblock<S2SV_blank>filter<S2SV_blank>offsets:<S2SV_blank>%d,<S2SV_blank>%d\\\\n\" , beta_offset_div2 , tc_offset_div2 ) ; return AVERROR_INVALIDDATA ; } sh -> beta_offset = beta_offset_div2 * 2 ; sh -> tc_offset = tc_offset_div2 * 2 ; } } else { sh -> disable_deblocking_filter_flag = s -> ps . pps -> disable_dbf ; sh -> beta_offset = s -> ps . pps -> beta_offset ; sh -> tc_offset = s -> ps . pps -> tc_offset ; } } else { sh -> disable_deblocking_filter_flag = 0 ; sh -> beta_offset = 0 ; sh -> tc_offset = 0 ; } if ( s -> ps . pps -> seq_loop_filter_across_slices_enabled_flag && ( sh -> slice_sample_adaptive_offset_flag [ 0 ] || sh -> slice_sample_adaptive_offset_flag [ 1 ] || ! sh -> disable_deblocking_filter_flag ) ) { sh -> slice_loop_filter_across_slices_enabled_flag = get_bits1 ( gb ) ; } else { sh -> slice_loop_filter_across_slices_enabled_flag = s -> ps . pps -> seq_loop_filter_across_slices_enabled_flag ; } } else if ( ! s -> slice_initialized ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Independent<S2SV_blank>slice<S2SV_blank>segment<S2SV_blank>missing.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } sh -> num_entry_point_offsets = 0 ; if ( s -> ps . pps -> tiles_enabled_flag || s -> ps . pps -> entropy_coding_sync_enabled_flag ) { unsigned num_entry_point_offsets = get_ue_golomb_long ( gb ) ; if ( num_entry_point_offsets > get_bits_left ( gb ) ) { av_log ( s -> avctx , AV_LOG_ERROR , \"num_entry_point_offsets<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\\\\n\" , num_entry_point_offsets ) ; return AVERROR_INVALIDDATA ; } sh -> num_entry_point_offsets = num_entry_point_offsets ; if ( sh -> num_entry_point_offsets > 0 ) { int offset_len = get_ue_golomb_long ( gb ) + 1 ; if ( offset_len < 1 || offset_len > 32 ) { sh -> num_entry_point_offsets = 0 ; av_log ( s -> avctx , AV_LOG_ERROR , \"offset_len<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\\\\n\" , offset_len ) ; return AVERROR_INVALIDDATA ; } av_freep ( & sh -> entry_point_offset ) ; av_freep ( & sh -> offset ) ; av_freep ( & sh -> size ) ; sh -> entry_point_offset = av_malloc_array ( sh -> num_entry_point_offsets , sizeof ( unsigned ) ) ; sh -> offset = av_malloc_array ( sh -> num_entry_point_offsets , sizeof ( int ) ) ; sh -> size = av_malloc_array ( sh -> num_entry_point_offsets , sizeof ( int ) ) ; if ( ! sh -> entry_point_offset || ! sh -> offset || ! sh -> size ) { sh -> num_entry_point_offsets = 0 ; av_log ( s -> avctx , AV_LOG_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>memory\\\\n\" ) ; return AVERROR ( ENOMEM ) ; } for ( i = 0 ; i < sh -> num_entry_point_offsets ; i ++ ) { unsigned val = get_bits_long ( gb , offset_len ) ; sh -> entry_point_offset [ i ] = val + 1 ; } if ( s -> threads_number > 1 && ( s -> ps . pps -> num_tile_rows > 1 || s -> ps . pps -> num_tile_columns > 1 ) ) { s -> enable_parallel_tiles = 0 ; s -> threads_number = 1 ; } else s -> enable_parallel_tiles = 0 ; } else s -> enable_parallel_tiles = 0 ; } if ( s -> ps . pps -> slice_header_extension_present_flag ) { unsigned int length = get_ue_golomb_long ( gb ) ; if ( length * 8LL > get_bits_left ( gb ) ) { av_log ( s -> avctx , AV_LOG_ERROR , \"too<S2SV_blank>many<S2SV_blank>slice_header_extension_data_bytes\\\\n\" ) ; return AVERROR_INVALIDDATA ; } for ( i = 0 ; i < length ; i ++ ) skip_bits ( gb , 8 ) ; } sh -> slice_qp = 26U + s -> ps . pps -> pic_init_qp_minus26 + sh -> slice_qp_delta ; if ( sh -> slice_qp > 51 || sh -> slice_qp < - s -> ps . sps -> qp_bd_offset ) { av_log ( s -> avctx , AV_LOG_ERROR , \"The<S2SV_blank>slice_qp<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>outside<S2SV_blank>the<S2SV_blank>valid<S2SV_blank>range<S2SV_blank>\" \"[%d,<S2SV_blank>51].\\\\n\" , sh -> slice_qp , - s -> ps . sps -> qp_bd_offset ) ; return AVERROR_INVALIDDATA ; } sh -> slice_ctb_addr_rs = sh -> slice_segment_addr ; if ( ! s -> sh . slice_ctb_addr_rs && s -> sh . dependent_slice_segment_flag ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Impossible<S2SV_blank>slice<S2SV_blank>segment.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( get_bits_left ( gb ) < 0 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Overread<S2SV_blank>slice<S2SV_blank>header<S2SV_blank>by<S2SV_blank>%d<S2SV_blank>bits\\\\n\" , - get_bits_left ( gb ) ) ; return AVERROR_INVALIDDATA ; } s -> HEVClc -> first_qp_group = ! s -> sh . dependent_slice_segment_flag ; if ( ! s -> ps . pps -> cu_qp_delta_enabled_flag ) s -> HEVClc -> qp_y = s -> sh . slice_qp ; s -> slice_initialized = 1 ; s -> HEVClc -> tu . cu_qp_offset_cb = 0 ; s -> HEVClc -> tu . cu_qp_offset_cr = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gb ) ; if ( s -> ref && sh -> first_slice_in_pic_flag ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Two<S2SV_blank>slices<S2SV_blank>reporting<S2SV_blank>being<S2SV_blank>the<S2SV_blank>first<S2SV_blank>in<S2SV_blank>the<S2SV_blank>same<S2SV_blank>frame.\\\\n\" ) ; return 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1773\n\n```\nCWE-119 static int xlate_to_uni ( const unsigned char * name , int len , unsigned char * outname , int * longlen , int * outlen , int escape , int utf8 , struct nls_table * nls ) { const unsigned char * ip ; unsigned char nc ; unsigned char * op ; unsigned int ec ; int i , k , fill ; int charlen ; if ( utf8 ) { <S2SV_StartBug> * outlen = utf8s_to_utf16s ( name , len , ( wchar_t * ) outname ) ; <S2SV_EndBug> if ( * outlen < 0 ) return * outlen ; else if ( * outlen > FAT_LFN_LEN ) return - ENAMETOOLONG ; op = & outname [ * outlen * sizeof ( wchar_t ) ] ; } else { if ( nls ) { for ( i = 0 , ip = name , op = outname , * outlen = 0 ; i < len && * outlen <= FAT_LFN_LEN ; * outlen += 1 ) { if ( escape && ( * ip == ':' ) ) { if ( i > len - 5 ) return - EINVAL ; ec = 0 ; for ( k = 1 ; k < 5 ; k ++ ) { nc = ip [ k ] ; ec <<= 4 ; if ( nc >= '0' && nc <= '9' ) { ec |= nc - '0' ; continue ; } if ( nc >= 'a' && nc <= 'f' ) { ec |= nc - ( 'a' - 10 ) ; continue ; } if ( nc >= 'A' && nc <= 'F' ) { ec |= nc - ( 'A' - 10 ) ; continue ; } return - EINVAL ; } * op ++ = ec & 0xFF ; * op ++ = ec >> 8 ; ip += 5 ; i += 5 ; } else { if ( ( charlen = nls -> char2uni ( ip , len - i , ( wchar_t * ) op ) ) < 0 ) return - EINVAL ; ip += charlen ; i += charlen ; op += 2 ; } } if ( i < len ) return - ENAMETOOLONG ; } else { for ( i = 0 , ip = name , op = outname , * outlen = 0 ; i < len && * outlen <= FAT_LFN_LEN ; i ++ , * outlen += 1 ) { * op ++ = * ip ++ ; * op ++ = 0 ; } if ( i < len ) return - ENAMETOOLONG ; } } * longlen = * outlen ; if ( * outlen % 13 ) { * op ++ = 0 ; * op ++ = 0 ; * outlen += 1 ; if ( * outlen % 13 ) { fill = 13 - ( * outlen % 13 ) ; for ( i = 0 ; i < fill ; i ++ ) { * op ++ = 0xff ; * op ++ = 0xff ; } * outlen += fill ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , len , UTF16_HOST_ENDIAN , <S2SV_ModStart> * ) outname , FAT_LFN_LEN + 2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0313\n\n```\nCWE-000 int evm_update_evmxattr ( struct dentry * dentry , const char * xattr_name , const char * xattr_value , size_t xattr_value_len ) { struct inode * inode = dentry -> d_inode ; struct evm_ima_xattr_data xattr_data ; int rc = 0 ; rc = evm_calc_hmac ( dentry , xattr_name , xattr_value , xattr_value_len , xattr_data . digest ) ; if ( rc == 0 ) { xattr_data . type = EVM_XATTR_HMAC ; rc = __vfs_setxattr_noperm ( dentry , XATTR_NAME_EVM , & xattr_data , sizeof ( xattr_data ) , 0 ) ; } <S2SV_StartBug> else if ( rc == - ENODATA ) <S2SV_EndBug> rc = inode -> i_op -> removexattr ( dentry , XATTR_NAME_EVM ) ; <S2SV_StartBug> return rc ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == - ENODATA && inode -> i_op -> removexattr ) { <S2SV_ModEnd> rc = inode <S2SV_ModStart> XATTR_NAME_EVM ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static inline int mount_entry_on_generic ( struct mntent * mntent , <S2SV_StartBug> const char * path ) <S2SV_EndBug> { unsigned long mntflags ; char * mntdata ; int ret ; bool optional = hasmntopt ( mntent , \"optional\" ) != NULL ; ret = mount_entry_create_dir_file ( mntent , path ) ; if ( ret < 0 ) return optional ? 0 : - 1 ; cull_mntent_opt ( mntent ) ; if ( parse_mntopts ( mntent -> mnt_opts , & mntflags , & mntdata ) < 0 ) { free ( mntdata ) ; return - 1 ; } ret = mount_entry ( mntent -> mnt_fsname , path , mntent -> mnt_type , <S2SV_StartBug> mntflags , mntdata , optional ) ; <S2SV_EndBug> free ( mntdata ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * path , const char * rootfs <S2SV_ModStart> mntdata , optional , rootfs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int tile_worker_hook ( void * arg1 , void * arg2 ) { <S2SV_EndBug> <S2SV_StartBug> TileWorkerData * const tile_data = ( TileWorkerData * ) arg1 ; <S2SV_EndBug> <S2SV_StartBug> const TileInfo * const tile = ( TileInfo * ) arg2 ; <S2SV_EndBug> <S2SV_StartBug> int mi_row , mi_col ; <S2SV_EndBug> for ( mi_row = tile -> mi_row_start ; mi_row < tile -> mi_row_end ; mi_row += MI_BLOCK_SIZE ) { vp9_zero ( tile_data -> xd . left_context ) ; vp9_zero ( tile_data -> xd . left_seg_context ) ; for ( mi_col = tile -> mi_col_start ; mi_col < tile -> mi_col_end ; mi_col += MI_BLOCK_SIZE ) { <S2SV_StartBug> decode_partition ( tile_data -> cm , & tile_data -> xd , tile , <S2SV_EndBug> <S2SV_StartBug> mi_row , mi_col , & tile_data -> bit_reader , BLOCK_64X64 ) ; <S2SV_EndBug> } } return ! tile_data -> xd . corrupted ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int tile_worker_hook ( <S2SV_ModEnd> TileWorkerData * const <S2SV_ModStart> * const tile_data , <S2SV_ModEnd> const TileInfo * <S2SV_ModStart> * const tile ) { <S2SV_ModEnd> int mi_row , <S2SV_ModStart> mi_row , mi_col ; if ( setjmp ( tile_data -> error_info . jmp ) ) { tile_data -> error_info . setjmp = 0 ; tile_data -> xd . corrupted = 1 ; return 0 ; } tile_data -> error_info . setjmp = 1 ; tile_data -> xd . error_info = & tile_data -> error_info <S2SV_ModStart> ( tile_data -> pbi <S2SV_ModEnd> , & tile_data <S2SV_ModStart> tile_data -> xd <S2SV_ModEnd> , mi_row , <S2SV_ModStart> bit_reader , BLOCK_64X64 , 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void subtract_stats ( FIRSTPASS_STATS * section , const FIRSTPASS_STATS * frame ) { section -> frame -= frame -> frame ; <S2SV_StartBug> section -> intra_error -= frame -> intra_error ; <S2SV_EndBug> section -> coded_error -= frame -> coded_error ; section -> sr_coded_error -= frame -> sr_coded_error ; <S2SV_StartBug> section -> ssim_weighted_pred_err -= frame -> ssim_weighted_pred_err ; <S2SV_EndBug> section -> pcnt_inter -= frame -> pcnt_inter ; section -> pcnt_motion -= frame -> pcnt_motion ; section -> pcnt_second_ref -= frame -> pcnt_second_ref ; <S2SV_StartBug> section -> pcnt_neutral -= frame -> pcnt_neutral ; <S2SV_EndBug> section -> MVr -= frame -> MVr ; section -> mvr_abs -= frame -> mvr_abs ; section -> MVc -= frame -> MVc ; section -> mvc_abs -= frame -> mvc_abs ; section -> MVrv -= frame -> MVrv ; section -> MVcv -= frame -> MVcv ; section -> mv_in_out_count -= frame -> mv_in_out_count ; section -> new_mv_count -= frame -> new_mv_count ; section -> count -= frame -> count ; section -> duration -= frame -> duration ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; section -> weight -= frame -> weight ; section -> <S2SV_ModStart> ; section -> <S2SV_ModEnd> pcnt_inter -= frame <S2SV_ModStart> frame -> pcnt_neutral ; section -> intra_skip_pct -= frame -> intra_skip_pct ; section -> inactive_zone_rows -= frame -> inactive_zone_rows ; section -> inactive_zone_cols -= frame -> inactive_zone_cols\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17857\n\n```\nCWE-119 static int check_stack_boundary ( struct bpf_verifier_env * env , int regno , int access_size , bool zero_size_allowed , struct bpf_call_arg_meta * meta ) { struct bpf_verifier_state * state = env -> cur_state ; struct bpf_reg_state * regs = state -> regs ; int off , i , slot , spi ; if ( regs [ regno ] . type != PTR_TO_STACK ) { if ( zero_size_allowed && access_size == 0 && register_is_null ( regs [ regno ] ) ) return 0 ; verbose ( env , \"R%d<S2SV_blank>type=%s<S2SV_blank>expected=%s\\\\n\" , regno , reg_type_str [ regs [ regno ] . type ] , reg_type_str [ PTR_TO_STACK ] ) ; return - EACCES ; } if ( ! tnum_is_const ( regs [ regno ] . var_off ) ) { char tn_buf [ 48 ] ; tnum_strn ( tn_buf , sizeof ( tn_buf ) , regs [ regno ] . var_off ) ; verbose ( env , \"invalid<S2SV_blank>variable<S2SV_blank>stack<S2SV_blank>read<S2SV_blank>R%d<S2SV_blank>var_off=%s\\\\n\" , regno , tn_buf ) ; <S2SV_StartBug> } <S2SV_EndBug> off = regs [ regno ] . off + regs [ regno ] . var_off . value ; if ( off >= 0 || off < - MAX_BPF_STACK || off + access_size > 0 || access_size < 0 || ( access_size == 0 && ! zero_size_allowed ) ) { verbose ( env , \"invalid<S2SV_blank>stack<S2SV_blank>type<S2SV_blank>R%d<S2SV_blank>off=%d<S2SV_blank>access_size=%d\\\\n\" , regno , off , access_size ) ; return - EACCES ; } if ( env -> prog -> aux -> stack_depth < - off ) env -> prog -> aux -> stack_depth = - off ; if ( meta && meta -> raw_mode ) { meta -> access_size = access_size ; meta -> regno = regno ; return 0 ; } for ( i = 0 ; i < access_size ; i ++ ) { slot = - ( off + i ) - 1 ; spi = slot / BPF_REG_SIZE ; if ( state -> allocated_stack <= slot || state -> stack [ spi ] . slot_type [ slot % BPF_REG_SIZE ] != STACK_MISC ) { verbose ( env , \"invalid<S2SV_blank>indirect<S2SV_blank>read<S2SV_blank>from<S2SV_blank>stack<S2SV_blank>off<S2SV_blank>%d+%d<S2SV_blank>size<S2SV_blank>%d\\\\n\" , off , i , access_size ) ; return - EACCES ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tn_buf ) ; return - EACCES ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int fill_autodev ( const struct lxc_rootfs * rootfs ) { int ret ; char path [ MAXPATHLEN ] ; int i ; mode_t cmask ; INFO ( \"Creating<S2SV_blank>initial<S2SV_blank>consoles<S2SV_blank>under<S2SV_blank>container<S2SV_blank>/dev\" ) ; ret = snprintf ( path , MAXPATHLEN , \"%s/dev\" , rootfs -> path ? rootfs -> mount : \"\" ) ; if ( ret < 0 || ret >= MAXPATHLEN ) { ERROR ( \"Error<S2SV_blank>calculating<S2SV_blank>container<S2SV_blank>/dev<S2SV_blank>location\" ) ; return - 1 ; } if ( ! dir_exists ( path ) ) return 0 ; INFO ( \"Populating<S2SV_blank>container<S2SV_blank>/dev\" ) ; cmask = umask ( S_IXUSR | S_IXGRP | S_IXOTH ) ; for ( i = 0 ; i < sizeof ( lxc_devs ) / sizeof ( lxc_devs [ 0 ] ) ; i ++ ) { const struct lxc_devs * d = & lxc_devs [ i ] ; ret = snprintf ( path , MAXPATHLEN , \"%s/dev/%s\" , rootfs -> path ? rootfs -> mount : \"\" , d -> name ) ; if ( ret < 0 || ret >= MAXPATHLEN ) return - 1 ; ret = mknod ( path , d -> mode , makedev ( d -> maj , d -> min ) ) ; if ( ret && errno != EEXIST ) { char hostpath [ MAXPATHLEN ] ; FILE * pathfile ; ret = snprintf ( hostpath , MAXPATHLEN , \"/dev/%s\" , d -> name ) ; if ( ret < 0 || ret >= MAXPATHLEN ) return - 1 ; pathfile = fopen ( path , \"wb\" ) ; if ( ! pathfile ) { SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>device<S2SV_blank>mount<S2SV_blank>target<S2SV_blank>\\'%s\\'\" , path ) ; return - 1 ; } fclose ( pathfile ) ; <S2SV_StartBug> if ( mount ( hostpath , path , 0 , MS_BIND , NULL ) != 0 ) { <S2SV_EndBug> SYSERROR ( \"Failed<S2SV_blank>bind<S2SV_blank>mounting<S2SV_blank>device<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>host<S2SV_blank>into<S2SV_blank>container\" , d -> name ) ; return - 1 ; } } } umask ( cmask ) ; INFO ( \"Populated<S2SV_blank>container<S2SV_blank>/dev\" ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( safe_mount ( hostpath , path , 0 , MS_BIND , NULL , rootfs -> path ? rootfs -> mount : <S2SV_ModEnd> NULL ) !=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7613\n\n```\nCWE-362 static int newseg ( struct ipc_namespace * ns , struct ipc_params * params ) { key_t key = params -> key ; int shmflg = params -> flg ; size_t size = params -> u . size ; int error ; struct shmid_kernel * shp ; size_t numpages = ( size + PAGE_SIZE - 1 ) >> PAGE_SHIFT ; struct file * file ; char name [ 13 ] ; int id ; vm_flags_t acctflag = 0 ; if ( size < SHMMIN || size > ns -> shm_ctlmax ) return - EINVAL ; if ( numpages << PAGE_SHIFT < size ) return - ENOSPC ; if ( ns -> shm_tot + numpages < ns -> shm_tot || ns -> shm_tot + numpages > ns -> shm_ctlall ) return - ENOSPC ; shp = ipc_rcu_alloc ( sizeof ( * shp ) ) ; if ( ! shp ) return - ENOMEM ; shp -> shm_perm . key = key ; shp -> shm_perm . mode = ( shmflg & S_IRWXUGO ) ; shp -> mlock_user = NULL ; shp -> shm_perm . security = NULL ; error = security_shm_alloc ( shp ) ; if ( error ) { ipc_rcu_putref ( shp , ipc_rcu_free ) ; return error ; } sprintf ( name , \"SYSV%08x\" , key ) ; if ( shmflg & SHM_HUGETLB ) { struct hstate * hs ; size_t hugesize ; hs = hstate_sizelog ( ( shmflg >> SHM_HUGE_SHIFT ) & SHM_HUGE_MASK ) ; if ( ! hs ) { error = - EINVAL ; goto no_file ; } hugesize = ALIGN ( size , huge_page_size ( hs ) ) ; if ( shmflg & SHM_NORESERVE ) acctflag = VM_NORESERVE ; file = hugetlb_file_setup ( name , hugesize , acctflag , & shp -> mlock_user , HUGETLB_SHMFS_INODE , ( shmflg >> SHM_HUGE_SHIFT ) & SHM_HUGE_MASK ) ; } else { if ( ( shmflg & SHM_NORESERVE ) && sysctl_overcommit_memory != OVERCOMMIT_NEVER ) acctflag = VM_NORESERVE ; file = shmem_kernel_file_setup ( name , size , acctflag ) ; } error = PTR_ERR ( file ) ; if ( IS_ERR ( file ) ) goto no_file ; <S2SV_StartBug> id = ipc_addid ( & shm_ids ( ns ) , & shp -> shm_perm , ns -> shm_ctlmni ) ; <S2SV_EndBug> if ( id < 0 ) { error = id ; goto no_id ; } <S2SV_StartBug> shp -> shm_cprid = task_tgid_vnr ( current ) ; <S2SV_EndBug> shp -> shm_lprid = 0 ; shp -> shm_atim = shp -> shm_dtim = 0 ; shp -> shm_ctim = get_seconds ( ) ; shp -> shm_segsz = size ; shp -> shm_nattch = 0 ; shp -> shm_file = file ; shp -> shm_creator = current ; list_add ( & shp -> shm_clist , & current -> sysvshm . shm_clist ) ; file_inode ( file ) -> i_ino = shp -> shm_perm . id ; ns -> shm_tot += numpages ; error = shp -> shm_perm . id ; ipc_unlock_object ( & shp -> shm_perm ) ; rcu_read_unlock ( ) ; return error ; no_id : if ( is_file_hugepages ( file ) && shp -> mlock_user ) user_shm_unlock ( size , shp -> mlock_user ) ; fput ( file ) ; no_file : ipc_rcu_putref ( shp , shm_rcu_free ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto no_file ; shp -> shm_cprid = task_tgid_vnr ( current ) ; shp -> shm_lprid = 0 ; shp -> shm_atim = shp -> shm_dtim = 0 ; shp -> shm_ctim = get_seconds ( ) ; shp -> shm_segsz = size ; shp -> shm_nattch = 0 ; shp -> shm_file = file ; shp -> shm_creator = current ; <S2SV_ModStart> no_id ; } <S2SV_ModEnd> list_add ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14055\n\n```\nCWE-834 static int mv_read_header ( AVFormatContext * avctx ) { MvContext * mv = avctx -> priv_data ; AVIOContext * pb = avctx -> pb ; AVStream * ast = NULL , * vst = NULL ; int version , i ; int ret ; avio_skip ( pb , 4 ) ; version = avio_rb16 ( pb ) ; if ( version == 2 ) { uint64_t timestamp ; int v ; avio_skip ( pb , 22 ) ; ast = avformat_new_stream ( avctx , NULL ) ; if ( ! ast ) return AVERROR ( ENOMEM ) ; vst = avformat_new_stream ( avctx , NULL ) ; if ( ! vst ) return AVERROR ( ENOMEM ) ; avpriv_set_pts_info ( vst , 64 , 1 , 15 ) ; vst -> codecpar -> codec_type = AVMEDIA_TYPE_VIDEO ; vst -> avg_frame_rate = av_inv_q ( vst -> time_base ) ; vst -> nb_frames = avio_rb32 ( pb ) ; v = avio_rb32 ( pb ) ; switch ( v ) { case 1 : vst -> codecpar -> codec_id = AV_CODEC_ID_MVC1 ; break ; case 2 : vst -> codecpar -> format = AV_PIX_FMT_ARGB ; vst -> codecpar -> codec_id = AV_CODEC_ID_RAWVIDEO ; break ; default : avpriv_request_sample ( avctx , \"Video<S2SV_blank>compression<S2SV_blank>%i\" , v ) ; break ; } vst -> codecpar -> codec_tag = 0 ; vst -> codecpar -> width = avio_rb32 ( pb ) ; vst -> codecpar -> height = avio_rb32 ( pb ) ; avio_skip ( pb , 12 ) ; ast -> codecpar -> codec_type = AVMEDIA_TYPE_AUDIO ; ast -> nb_frames = vst -> nb_frames ; ast -> codecpar -> sample_rate = avio_rb32 ( pb ) ; if ( ast -> codecpar -> sample_rate <= 0 ) { av_log ( avctx , AV_LOG_ERROR , \"Invalid<S2SV_blank>sample<S2SV_blank>rate<S2SV_blank>%d\\\\n\" , ast -> codecpar -> sample_rate ) ; return AVERROR_INVALIDDATA ; } avpriv_set_pts_info ( ast , 33 , 1 , ast -> codecpar -> sample_rate ) ; if ( set_channels ( avctx , ast , avio_rb32 ( pb ) ) < 0 ) return AVERROR_INVALIDDATA ; v = avio_rb32 ( pb ) ; if ( v == AUDIO_FORMAT_SIGNED ) { ast -> codecpar -> codec_id = AV_CODEC_ID_PCM_S16BE ; } else { avpriv_request_sample ( avctx , \"Audio<S2SV_blank>compression<S2SV_blank>(format<S2SV_blank>%i)\" , v ) ; } avio_skip ( pb , 12 ) ; var_read_metadata ( avctx , \"title\" , 0x80 ) ; var_read_metadata ( avctx , \"comment\" , 0x100 ) ; avio_skip ( pb , 0x80 ) ; timestamp = 0 ; for ( i = 0 ; i < vst -> nb_frames ; i ++ ) { uint32_t pos = avio_rb32 ( pb ) ; uint32_t asize = avio_rb32 ( pb ) ; <S2SV_StartBug> uint32_t vsize = avio_rb32 ( pb ) ; <S2SV_EndBug> avio_skip ( pb , 8 ) ; av_add_index_entry ( ast , pos , timestamp , asize , 0 , AVINDEX_KEYFRAME ) ; av_add_index_entry ( vst , pos + asize , i , vsize , 0 , AVINDEX_KEYFRAME ) ; timestamp += asize / ( ast -> codecpar -> channels * 2 ) ; } } else if ( ! version && avio_rb16 ( pb ) == 3 ) { avio_skip ( pb , 4 ) ; if ( ( ret = read_table ( avctx , NULL , parse_global_var ) ) < 0 ) return ret ; if ( mv -> nb_audio_tracks > 1 ) { avpriv_request_sample ( avctx , \"Multiple<S2SV_blank>audio<S2SV_blank>streams<S2SV_blank>support\" ) ; return AVERROR_PATCHWELCOME ; } else if ( mv -> nb_audio_tracks ) { ast = avformat_new_stream ( avctx , NULL ) ; if ( ! ast ) return AVERROR ( ENOMEM ) ; ast -> codecpar -> codec_type = AVMEDIA_TYPE_AUDIO ; if ( ( read_table ( avctx , ast , parse_audio_var ) ) < 0 ) return ret ; if ( mv -> acompression == 100 && mv -> aformat == AUDIO_FORMAT_SIGNED && ast -> codecpar -> bits_per_coded_sample == 16 ) { ast -> codecpar -> codec_id = AV_CODEC_ID_PCM_S16BE ; } else { avpriv_request_sample ( avctx , \"Audio<S2SV_blank>compression<S2SV_blank>%i<S2SV_blank>(format<S2SV_blank>%i,<S2SV_blank>sr<S2SV_blank>%i)\" , mv -> acompression , mv -> aformat , ast -> codecpar -> bits_per_coded_sample ) ; ast -> codecpar -> codec_id = AV_CODEC_ID_NONE ; } if ( ast -> codecpar -> channels <= 0 ) { av_log ( avctx , AV_LOG_ERROR , \"No<S2SV_blank>valid<S2SV_blank>channel<S2SV_blank>count<S2SV_blank>found.\\\\n\" ) ; return AVERROR_INVALIDDATA ; } } if ( mv -> nb_video_tracks > 1 ) { avpriv_request_sample ( avctx , \"Multiple<S2SV_blank>video<S2SV_blank>streams<S2SV_blank>support\" ) ; return AVERROR_PATCHWELCOME ; } else if ( mv -> nb_video_tracks ) { vst = avformat_new_stream ( avctx , NULL ) ; if ( ! vst ) return AVERROR ( ENOMEM ) ; vst -> codecpar -> codec_type = AVMEDIA_TYPE_VIDEO ; if ( ( ret = read_table ( avctx , vst , parse_video_var ) ) < 0 ) return ret ; } if ( mv -> nb_audio_tracks ) read_index ( pb , ast ) ; if ( mv -> nb_video_tracks ) read_index ( pb , vst ) ; } else { avpriv_request_sample ( avctx , \"Version<S2SV_blank>%i\" , version ) ; return AVERROR_PATCHWELCOME ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( pb ) ; if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4131\n\n```\nCWE-189 static int nfs4_xdr_dec_getacl ( struct rpc_rqst * rqstp , struct xdr_stream * xdr , struct nfs_getaclres * res ) { struct compound_hdr hdr ; int status ; status = decode_compound_hdr ( xdr , & hdr ) ; if ( status ) goto out ; status = decode_sequence ( xdr , & res -> seq_res , rqstp ) ; if ( status ) goto out ; status = decode_putfh ( xdr ) ; if ( status ) goto out ; <S2SV_StartBug> status = decode_getacl ( xdr , rqstp , & res -> acl_len ) ; <S2SV_EndBug> out : return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , rqstp , res <S2SV_ModEnd> ) ; out\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 int pci_bus_configured ( int bus ) { <S2SV_StartBug> assert ( bus >= 0 && bus < MAXBUSES ) ; <S2SV_EndBug> return ( pci_businfo [ bus ] != NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bus ) { <S2SV_ModEnd> return ( pci_businfo\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20503\n\n```\nCWE-125 void sctp_auth_get_cookie_params ( struct sctp_tcb * stcb , struct mbuf * m , uint32_t offset , uint32_t length ) { struct sctp_paramhdr * phdr , tmp_param ; uint16_t plen , ptype ; uint8_t random_store [ SCTP_PARAM_BUFFER_SIZE ] ; struct sctp_auth_random * p_random = NULL ; uint16_t random_len = 0 ; uint8_t hmacs_store [ SCTP_PARAM_BUFFER_SIZE ] ; struct sctp_auth_hmac_algo * hmacs = NULL ; uint16_t hmacs_len = 0 ; uint8_t chunks_store [ SCTP_PARAM_BUFFER_SIZE ] ; struct sctp_auth_chunk_list * chunks = NULL ; uint16_t num_chunks = 0 ; sctp_key_t * new_key ; uint32_t keylen ; length += offset ; phdr = ( struct sctp_paramhdr * ) sctp_m_getptr ( m , offset , sizeof ( struct sctp_paramhdr ) , ( uint8_t * ) & tmp_param ) ; while ( phdr != NULL ) { ptype = ntohs ( phdr -> param_type ) ; plen = ntohs ( phdr -> param_length ) ; <S2SV_StartBug> if ( ( plen == 0 ) || ( offset + plen > length ) ) <S2SV_EndBug> break ; if ( ptype == SCTP_RANDOM ) { if ( plen > sizeof ( random_store ) ) break ; phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) random_store , plen ) ; if ( phdr == NULL ) return ; p_random = ( struct sctp_auth_random * ) phdr ; random_len = plen - sizeof ( * p_random ) ; } else if ( ptype == SCTP_HMAC_LIST ) { uint16_t num_hmacs ; uint16_t i ; if ( plen > sizeof ( hmacs_store ) ) break ; phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) hmacs_store , plen ) ; if ( phdr == NULL ) return ; hmacs = ( struct sctp_auth_hmac_algo * ) phdr ; hmacs_len = plen - sizeof ( * hmacs ) ; num_hmacs = hmacs_len / sizeof ( hmacs -> hmac_ids [ 0 ] ) ; if ( stcb -> asoc . local_hmacs != NULL ) sctp_free_hmaclist ( stcb -> asoc . local_hmacs ) ; stcb -> asoc . local_hmacs = sctp_alloc_hmaclist ( num_hmacs ) ; if ( stcb -> asoc . local_hmacs != NULL ) { for ( i = 0 ; i < num_hmacs ; i ++ ) { ( void ) sctp_auth_add_hmacid ( stcb -> asoc . local_hmacs , ntohs ( hmacs -> hmac_ids [ i ] ) ) ; } } } else if ( ptype == SCTP_CHUNK_LIST ) { int i ; if ( plen > sizeof ( chunks_store ) ) break ; phdr = sctp_get_next_param ( m , offset , ( struct sctp_paramhdr * ) chunks_store , plen ) ; if ( phdr == NULL ) return ; chunks = ( struct sctp_auth_chunk_list * ) phdr ; num_chunks = plen - sizeof ( * chunks ) ; if ( stcb -> asoc . local_auth_chunks != NULL ) sctp_clear_chunklist ( stcb -> asoc . local_auth_chunks ) ; else stcb -> asoc . local_auth_chunks = sctp_alloc_chunklist ( ) ; for ( i = 0 ; i < num_chunks ; i ++ ) { ( void ) sctp_auth_add_chunk ( chunks -> chunk_types [ i ] , stcb -> asoc . local_auth_chunks ) ; } } offset += SCTP_SIZE32 ( plen ) ; if ( offset + sizeof ( struct sctp_paramhdr ) > length ) break ; phdr = ( struct sctp_paramhdr * ) sctp_m_getptr ( m , offset , sizeof ( struct sctp_paramhdr ) , ( uint8_t * ) & tmp_param ) ; } keylen = sizeof ( * p_random ) + random_len + sizeof ( * hmacs ) + hmacs_len ; if ( chunks != NULL ) { keylen += sizeof ( * chunks ) + num_chunks ; } new_key = sctp_alloc_key ( keylen ) ; if ( new_key != NULL ) { if ( p_random != NULL ) { keylen = sizeof ( * p_random ) + random_len ; memcpy ( new_key -> key , p_random , keylen ) ; } else { keylen = 0 ; } if ( chunks != NULL ) { memcpy ( new_key -> key + keylen , chunks , sizeof ( * chunks ) + num_chunks ) ; keylen += sizeof ( * chunks ) + num_chunks ; } if ( hmacs != NULL ) { memcpy ( new_key -> key + keylen , hmacs , sizeof ( * hmacs ) + hmacs_len ) ; } } if ( stcb -> asoc . authinfo . random != NULL ) sctp_free_key ( stcb -> asoc . authinfo . random ) ; stcb -> asoc . authinfo . random = new_key ; stcb -> asoc . authinfo . random_len = random_len ; sctp_clear_cachedkeys ( stcb , stcb -> asoc . authinfo . assoc_keyid ) ; sctp_clear_cachedkeys ( stcb , stcb -> asoc . authinfo . recv_keyid ) ; stcb -> asoc . peer_hmac_id = sctp_negotiate_hmacid ( stcb -> asoc . peer_hmacs , stcb -> asoc . local_hmacs ) ; stcb -> asoc . authinfo . active_keyid = stcb -> sctp_ep -> sctp_ep . default_keyid ; ( void ) sctp_copy_skeylist ( & stcb -> sctp_ep -> sctp_ep . shared_keys , & stcb -> asoc . shared_keys ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ( plen < sizeof ( struct sctp_paramhdr ) <S2SV_ModEnd> ) || (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2016\n\n```\nCWE-269 uint32_t virtio_config_readl ( VirtIODevice * vdev , uint32_t addr ) { VirtioDeviceClass * k = VIRTIO_DEVICE_GET_CLASS ( vdev ) ; uint32_t val ; <S2SV_StartBug> k -> get_config ( vdev , vdev -> config ) ; <S2SV_EndBug> if ( addr > ( vdev -> config_len - sizeof ( val ) ) ) return ( uint32_t ) - 1 ; val = ldl_p ( vdev -> config + addr ) ; return val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t val ; if ( addr + sizeof ( val ) > vdev -> config_len ) { return ( uint32_t ) - 1 ; } <S2SV_ModStart> -> config ) <S2SV_ModEnd> ; val =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_frame ( vpx_codec_ctx_t * ctx , <S2SV_EndBug> const vpx_image_t * img , vpx_codec_pts_t pts , unsigned int duration , vpx_enc_frame_flags_t flags , unsigned int deadline , <S2SV_StartBug> VpxVideoWriter * writer ) { <S2SV_EndBug> vpx_codec_iter_t iter = NULL ; const vpx_codec_cx_pkt_t * pkt = NULL ; const vpx_codec_err_t res = vpx_codec_encode ( ctx , img , pts , duration , flags , deadline ) ; if ( res != VPX_CODEC_OK ) die_codec ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame.\" ) ; <S2SV_StartBug> while ( ( pkt = vpx_codec_get_cx_data ( ctx , & iter ) ) != NULL ) { <S2SV_EndBug> if ( pkt -> kind == VPX_CODEC_CX_FRAME_PKT ) { const int keyframe = ( pkt -> data . frame . flags & VPX_FRAME_IS_KEY ) != 0 ; if ( ! vpx_video_writer_write_frame ( writer , pkt -> data . frame . buf , pkt -> data . frame . sz , pkt -> data . frame . pts ) ) die_codec ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>write<S2SV_blank>compressed<S2SV_blank>frame.\" ) ; printf ( keyframe ? \"K\" : \".\" ) ; fflush ( stdout ) ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> encode_frame ( vpx_codec_ctx_t <S2SV_ModStart> writer ) { int got_pkts = 0 ; <S2SV_ModStart> NULL ) { got_pkts = 1 ; <S2SV_ModStart> ; } } return got_pkts ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9423\n\n```\nCWE-200 enum auth_stat gssrpc__svcauth_gss ( struct svc_req * rqst , struct rpc_msg * msg , bool_t * no_dispatch ) { enum auth_stat retstat ; XDR xdrs ; SVCAUTH * auth ; struct svc_rpc_gss_data * gd ; struct rpc_gss_cred * gc ; struct rpc_gss_init_res gr ; int call_stat , offset ; OM_uint32 min_stat ; log_debug ( \"in<S2SV_blank>svcauth_gss()\" ) ; rqst -> rq_xprt -> xp_verf = gssrpc__null_auth ; if ( rqst -> rq_xprt -> xp_auth == NULL || rqst -> rq_xprt -> xp_auth == & svc_auth_none ) { if ( ( auth = calloc ( sizeof ( * auth ) , 1 ) ) == NULL ) { fprintf ( stderr , \"svcauth_gss:<S2SV_blank>out_of_memory\\\\n\" ) ; return ( AUTH_FAILED ) ; } if ( ( gd = calloc ( sizeof ( * gd ) , 1 ) ) == NULL ) { fprintf ( stderr , \"svcauth_gss:<S2SV_blank>out_of_memory\\\\n\" ) ; return ( AUTH_FAILED ) ; } auth -> svc_ah_ops = & svc_auth_gss_ops ; SVCAUTH_PRIVATE ( auth ) = gd ; rqst -> rq_xprt -> xp_auth = auth ; } else gd = SVCAUTH_PRIVATE ( rqst -> rq_xprt -> xp_auth ) ; log_debug ( \"xp_auth=%p,<S2SV_blank>gd=%p\" , rqst -> rq_xprt -> xp_auth , gd ) ; if ( rqst -> rq_cred . oa_length <= 0 ) return ( AUTH_BADCRED ) ; gc = ( struct rpc_gss_cred * ) rqst -> rq_clntcred ; memset ( gc , 0 , sizeof ( * gc ) ) ; log_debug ( \"calling<S2SV_blank>xdrmem_create()\" ) ; log_debug ( \"oa_base=%p,<S2SV_blank>oa_length=%u\" , rqst -> rq_cred . oa_base , rqst -> rq_cred . oa_length ) ; xdrmem_create ( & xdrs , rqst -> rq_cred . oa_base , rqst -> rq_cred . oa_length , XDR_DECODE ) ; log_debug ( \"xdrmem_create()<S2SV_blank>returned\" ) ; if ( ! xdr_rpc_gss_cred ( & xdrs , gc ) ) { log_debug ( \"xdr_rpc_gss_cred()<S2SV_blank>failed\" ) ; XDR_DESTROY ( & xdrs ) ; return ( AUTH_BADCRED ) ; } XDR_DESTROY ( & xdrs ) ; retstat = AUTH_FAILED ; # define ret_freegc ( code ) do { retstat = code ; goto freegc ; } while ( 0 ) if ( gc -> gc_v != RPCSEC_GSS_VERSION ) ret_freegc ( AUTH_BADCRED ) ; if ( gc -> gc_svc != RPCSEC_GSS_SVC_NONE && gc -> gc_svc != RPCSEC_GSS_SVC_INTEGRITY && gc -> gc_svc != RPCSEC_GSS_SVC_PRIVACY ) ret_freegc ( AUTH_BADCRED ) ; if ( gd -> established ) { if ( gc -> gc_seq > MAXSEQ ) ret_freegc ( RPCSEC_GSS_CTXPROBLEM ) ; if ( ( offset = gd -> seqlast - gc -> gc_seq ) < 0 ) { gd -> seqlast = gc -> gc_seq ; offset = 0 - offset ; gd -> seqmask <<= offset ; offset = 0 ; } else if ( ( u_int ) offset >= gd -> win || ( gd -> seqmask & ( 1 << offset ) ) ) { * no_dispatch = 1 ; ret_freegc ( RPCSEC_GSS_CTXPROBLEM ) ; } gd -> seq = gc -> gc_seq ; gd -> seqmask |= ( 1 << offset ) ; } if ( gd -> established ) { rqst -> rq_clntname = ( char * ) gd -> client_name ; rqst -> rq_svccred = ( char * ) gd -> ctx ; } switch ( gc -> gc_proc ) { case RPCSEC_GSS_INIT : case RPCSEC_GSS_CONTINUE_INIT : if ( rqst -> rq_proc != NULLPROC ) ret_freegc ( AUTH_FAILED ) ; if ( ! svcauth_gss_acquire_cred ( ) ) ret_freegc ( AUTH_FAILED ) ; if ( ! svcauth_gss_accept_sec_context ( rqst , & gr ) ) ret_freegc ( AUTH_REJECTEDCRED ) ; if ( ! svcauth_gss_nextverf ( rqst , htonl ( gr . gr_win ) ) ) { gss_release_buffer ( & min_stat , & gr . gr_token ) ; <S2SV_StartBug> mem_free ( gr . gr_ctx . value , <S2SV_EndBug> sizeof ( gss_union_ctx_id_desc ) ) ; ret_freegc ( AUTH_FAILED ) ; } * no_dispatch = TRUE ; call_stat = svc_sendreply ( rqst -> rq_xprt , xdr_rpc_gss_init_res , ( caddr_t ) & gr ) ; gss_release_buffer ( & min_stat , & gr . gr_token ) ; <S2SV_StartBug> gss_release_buffer ( & min_stat , & gd -> checksum ) ; <S2SV_EndBug> mem_free ( gr . gr_ctx . value , sizeof ( gss_union_ctx_id_desc ) ) ; if ( ! call_stat ) ret_freegc ( AUTH_FAILED ) ; if ( gr . gr_major == GSS_S_COMPLETE ) gd -> established = TRUE ; break ; case RPCSEC_GSS_DATA : if ( ! svcauth_gss_validate ( rqst , gd , msg ) ) ret_freegc ( RPCSEC_GSS_CREDPROBLEM ) ; if ( ! svcauth_gss_nextverf ( rqst , htonl ( gc -> gc_seq ) ) ) ret_freegc ( AUTH_FAILED ) ; break ; case RPCSEC_GSS_DESTROY : if ( rqst -> rq_proc != NULLPROC ) ret_freegc ( AUTH_FAILED ) ; if ( ! svcauth_gss_validate ( rqst , gd , msg ) ) ret_freegc ( RPCSEC_GSS_CREDPROBLEM ) ; if ( ! svcauth_gss_nextverf ( rqst , htonl ( gc -> gc_seq ) ) ) ret_freegc ( AUTH_FAILED ) ; * no_dispatch = TRUE ; call_stat = svc_sendreply ( rqst -> rq_xprt , xdr_void , ( caddr_t ) NULL ) ; log_debug ( \"sendreply<S2SV_blank>in<S2SV_blank>destroy:<S2SV_blank>%d\" , call_stat ) ; if ( ! svcauth_gss_release_cred ( ) ) ret_freegc ( AUTH_FAILED ) ; SVCAUTH_DESTROY ( rqst -> rq_xprt -> xp_auth ) ; rqst -> rq_xprt -> xp_auth = & svc_auth_none ; break ; default : ret_freegc ( AUTH_REJECTEDCRED ) ; break ; } retstat = AUTH_OK ; freegc : xdr_free ( xdr_rpc_gss_cred , gc ) ; log_debug ( \"returning<S2SV_blank>%d<S2SV_blank>from<S2SV_blank>svcauth_gss()\" , retstat ) ; return ( retstat ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gr_token ) ; <S2SV_ModEnd> ret_freegc ( AUTH_FAILED <S2SV_ModStart> gd -> checksum <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static double calc_frame_boost ( VP9_COMP * cpi , FIRSTPASS_STATS * this_frame , <S2SV_EndBug> <S2SV_StartBug> double this_frame_mv_in_out ) { <S2SV_EndBug> double frame_boost ; <S2SV_StartBug> if ( this_frame -> intra_error > cpi -> twopass . gf_intra_err_min ) <S2SV_EndBug> <S2SV_StartBug> frame_boost = ( IIFACTOR * this_frame -> intra_error / <S2SV_EndBug> <S2SV_StartBug> DOUBLE_DIVIDE_CHECK ( this_frame -> coded_error ) ) ; <S2SV_EndBug> else frame_boost = ( IIFACTOR * cpi -> twopass . gf_intra_err_min / DOUBLE_DIVIDE_CHECK ( this_frame -> coded_error ) ) ; if ( this_frame_mv_in_out > 0.0 ) frame_boost += frame_boost * ( this_frame_mv_in_out * 2.0 ) ; else frame_boost += frame_boost * ( this_frame_mv_in_out / 2.0 ) ; <S2SV_StartBug> return MIN ( frame_boost , GF_RMAX ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , const <S2SV_ModStart> , double this_frame_mv_in_out , double max_boost <S2SV_ModStart> double frame_boost ; const double lq = vp9_convert_qindex_to_q ( cpi -> rc . avg_frame_qindex [ INTER_FRAME ] , cpi -> common . bit_depth ) ; const double boost_q_correction = MIN ( ( 0.5 + ( lq * 0.015 ) ) , 1.5 ) ; int num_mbs = ( cpi -> oxcf . resize_mode != RESIZE_NONE ) ? cpi -> initial_mbs : cpi -> common . MBs ; num_mbs = ( int ) MAX ( 1 , num_mbs * calculate_active_area ( cpi , this_frame ) ) ; <S2SV_ModEnd> frame_boost = ( <S2SV_ModStart> frame_boost = ( BASELINE_ERR_PER_MB * num_mbs ) <S2SV_ModEnd> / DOUBLE_DIVIDE_CHECK ( <S2SV_ModStart> -> coded_error ) ; frame_boost = frame_boost * BOOST_FACTOR * boost_q_correction <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( frame_boost , max_boost * boost_q_correction <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7863\n\n```\nCWE-787 static int decode_trns_chunk ( AVCodecContext * avctx , PNGDecContext * s , uint32_t length ) { <S2SV_StartBug> int v , i ; <S2SV_EndBug> if ( s -> color_type == PNG_COLOR_TYPE_PALETTE ) { if ( length > 256 || ! ( s -> state & PNG_PLTE ) ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < length ; i ++ ) { v = bytestream2_get_byte ( & s -> gb ) ; s -> palette [ i ] = ( s -> palette [ i ] & 0x00ffffff ) | ( v << 24 ) ; } } else if ( s -> color_type == PNG_COLOR_TYPE_GRAY || s -> color_type == PNG_COLOR_TYPE_RGB ) { if ( ( s -> color_type == PNG_COLOR_TYPE_GRAY && length != 2 ) || <S2SV_StartBug> ( s -> color_type == PNG_COLOR_TYPE_RGB && length != 6 ) ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; for ( i = 0 ; i < length / 2 ; i ++ ) { v = av_mod_uintp2 ( bytestream2_get_be16 ( & s -> gb ) , s -> bit_depth ) ; if ( s -> bit_depth > 8 ) AV_WB16 ( & s -> transparent_color_be [ 2 * i ] , v ) ; else s -> transparent_color_be [ i ] = v ; } } else { return AVERROR_INVALIDDATA ; } bytestream2_skip ( & s -> gb , 4 ) ; s -> has_trns = 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , i ; if ( ! ( s -> state & PNG_IHDR ) ) { av_log ( avctx , AV_LOG_ERROR , \"trns<S2SV_blank>before<S2SV_blank>IHDR\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( s -> state & PNG_IDAT ) { av_log ( avctx , AV_LOG_ERROR , \"trns<S2SV_blank>after<S2SV_blank>IDAT\\\\n\" ) ; return AVERROR_INVALIDDATA ; } <S2SV_ModStart> != 6 ) || s -> bit_depth == 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 <S2SV_StartBug> struct mb_cache * <S2SV_EndBug> <S2SV_StartBug> ext4_xattr_create_cache ( char * name ) <S2SV_EndBug> { <S2SV_StartBug> return mb_cache_create ( name , HASH_BUCKET_BITS ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> struct mb2_cache <S2SV_ModEnd> * ext4_xattr_create_cache ( <S2SV_ModStart> * ext4_xattr_create_cache ( void <S2SV_ModEnd> ) { return <S2SV_ModStart> ) { return mb2_cache_create ( <S2SV_ModEnd> HASH_BUCKET_BITS ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 static int sgi_clock_set ( clockid_t clockid , struct timespec * tp ) { u64 nsec ; <S2SV_StartBug> u64 rem ; <S2SV_EndBug> nsec = rtc_time ( ) * sgi_clock_period ; <S2SV_StartBug> sgi_clock_offset . tv_sec = tp -> tv_sec - div_long_long_rem ( nsec , NSEC_PER_SEC , & rem ) ; <S2SV_EndBug> if ( rem <= tp -> tv_nsec ) sgi_clock_offset . tv_nsec = tp -> tv_sec - rem ; else { sgi_clock_offset . tv_nsec = tp -> tv_sec + NSEC_PER_SEC - rem ; sgi_clock_offset . tv_sec -- ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u64 nsec ; u32 <S2SV_ModEnd> rem ; nsec <S2SV_ModStart> -> tv_sec - div_u64_rem <S2SV_ModEnd> ( nsec ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5232\n\n```\nCWE-362 int main ( int argc , char * argv [ ] ) { <S2SV_StartBug> p_fm_config_conx_hdlt hdl ; <S2SV_EndBug> int instance = 0 ; fm_mgr_config_errno_t res ; char * rem_addr = NULL ; char * community = \"public\" ; char Opts [ 256 ] ; int arg ; char * command ; int i ; strcpy ( Opts , \"i:d:h-\" ) ; while ( ( arg = getopt ( argc , argv , Opts ) ) != EOF ) { switch ( arg ) { case 'h' : case '-' : usage ( argv [ 0 ] ) ; return ( 0 ) ; case 'i' : instance = atol ( optarg ) ; break ; case 'd' : rem_addr = optarg ; break ; default : usage ( argv [ 0 ] ) ; return ( - 1 ) ; } } if ( optind >= argc ) { fprintf ( stderr , \"Command<S2SV_blank>required\\\\n\" ) ; usage ( argv [ 0 ] ) ; return - 1 ; } command = argv [ optind ++ ] ; printf ( \"Connecting<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>FM<S2SV_blank>instance<S2SV_blank>%d\\\\n\" , ( rem_addr == NULL ) ? \"LOCAL\" : rem_addr , instance ) ; if ( ( res = fm_mgr_config_init ( & hdl , instance , rem_addr , community ) ) != FM_CONF_OK ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>the<S2SV_blank>client<S2SV_blank>handle:<S2SV_blank>%d\\\\n\" , res ) ; <S2SV_StartBug> goto die_clean ; <S2SV_EndBug> } if ( ( res = fm_mgr_config_connect ( hdl ) ) != FM_CONF_OK ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>connect:<S2SV_blank>(%d)<S2SV_blank>%s\\\\n\" , res , fm_mgr_get_error_str ( res ) ) ; <S2SV_StartBug> goto die_clean ; <S2SV_EndBug> } for ( i = 0 ; i < commandListLen ; i ++ ) { if ( strcmp ( command , commandList [ i ] . name ) == 0 ) { <S2SV_StartBug> return commandList [ i ] . cmdPtr ( hdl , commandList [ i ] . mgr , ( argc - optind ) , & argv [ optind ] ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> } fprintf ( stderr , \"Command<S2SV_blank>(%s)<S2SV_blank>is<S2SV_blank>not<S2SV_blank>valid\\\\n\" , command ) ; usage ( argv [ 0 ] ) ; res = - 1 ; <S2SV_StartBug> die_clean : <S2SV_EndBug> if ( hdl ) free ( hdl ) ; <S2SV_StartBug> return res ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { p_fm_config_conx_hdlt hdl = NULL <S2SV_ModStart> ) ; goto cleanup <S2SV_ModEnd> ; } if <S2SV_ModStart> ) ; goto cleanup <S2SV_ModEnd> ; } for <S2SV_ModStart> 0 ) { res = <S2SV_ModEnd> commandList [ i <S2SV_ModStart> ] ) ; goto cleanup ; <S2SV_ModStart> - 1 ; cleanup : if ( hdl ) { if ( hdl -> sm_hdl ) { if ( hdl -> sm_hdl -> c_path [ 0 ] ) unlink ( hdl -> sm_hdl -> c_path ) ; } if ( hdl -> pm_hdl ) { if ( hdl -> pm_hdl -> c_path [ 0 ] ) unlink ( hdl -> pm_hdl -> c_path ) ; } if ( hdl -> fe_hdl ) { if ( hdl -> fe_hdl -> c_path [ 0 ] ) unlink ( hdl -> fe_hdl -> c_path ) ; } <S2SV_ModEnd> free ( hdl <S2SV_ModStart> hdl ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4098\n\n```\nCWE-119 static long gfs2_fallocate ( struct file * file , int mode , loff_t offset , loff_t len ) { struct inode * inode = file -> f_path . dentry -> d_inode ; struct gfs2_sbd * sdp = GFS2_SB ( inode ) ; struct gfs2_inode * ip = GFS2_I ( inode ) ; unsigned int data_blocks = 0 , ind_blocks = 0 , rblocks ; loff_t bytes , max_bytes ; struct gfs2_alloc * al ; int error ; loff_t bsize_mask = ~ ( ( loff_t ) sdp -> sd_sb . sb_bsize - 1 ) ; loff_t next = ( offset + len - 1 ) >> sdp -> sd_sb . sb_bsize_shift ; <S2SV_StartBug> next = ( next + 1 ) << sdp -> sd_sb . sb_bsize_shift ; <S2SV_EndBug> if ( mode & ~ FALLOC_FL_KEEP_SIZE ) return - EOPNOTSUPP ; offset &= bsize_mask ; len = next - offset ; bytes = sdp -> sd_max_rg_data * sdp -> sd_sb . sb_bsize / 2 ; if ( ! bytes ) bytes = UINT_MAX ; bytes &= bsize_mask ; if ( bytes == 0 ) bytes = sdp -> sd_sb . sb_bsize ; gfs2_holder_init ( ip -> i_gl , LM_ST_EXCLUSIVE , 0 , & ip -> i_gh ) ; error = gfs2_glock_nq ( & ip -> i_gh ) ; if ( unlikely ( error ) ) goto out_uninit ; if ( ! gfs2_write_alloc_required ( ip , offset , len ) ) goto out_unlock ; while ( len > 0 ) { if ( len < bytes ) bytes = len ; al = gfs2_alloc_get ( ip ) ; if ( ! al ) { error = - ENOMEM ; goto out_unlock ; } error = gfs2_quota_lock_check ( ip ) ; if ( error ) goto out_alloc_put ; retry : gfs2_write_calc_reserv ( ip , bytes , & data_blocks , & ind_blocks ) ; al -> al_requested = data_blocks + ind_blocks ; error = gfs2_inplace_reserve ( ip ) ; if ( error ) { if ( error == - ENOSPC && bytes > sdp -> sd_sb . sb_bsize ) { bytes >>= 1 ; bytes &= bsize_mask ; if ( bytes == 0 ) bytes = sdp -> sd_sb . sb_bsize ; goto retry ; } goto out_qunlock ; } max_bytes = bytes ; <S2SV_StartBug> calc_max_reserv ( ip , len , & max_bytes , & data_blocks , & ind_blocks ) ; <S2SV_EndBug> al -> al_requested = data_blocks + ind_blocks ; rblocks = RES_DINODE + ind_blocks + RES_STATFS + RES_QUOTA + RES_RG_HDR + gfs2_rg_blocks ( ip ) ; if ( gfs2_is_jdata ( ip ) ) rblocks += data_blocks ? data_blocks : 1 ; error = gfs2_trans_begin ( sdp , rblocks , PAGE_CACHE_SIZE / sdp -> sd_sb . sb_bsize ) ; if ( error ) goto out_trans_fail ; error = fallocate_chunk ( inode , offset , max_bytes , mode ) ; gfs2_trans_end ( sdp ) ; if ( error ) goto out_trans_fail ; len -= max_bytes ; offset += max_bytes ; gfs2_inplace_release ( ip ) ; gfs2_quota_unlock ( ip ) ; gfs2_alloc_put ( ip ) ; } goto out_unlock ; out_trans_fail : gfs2_inplace_release ( ip ) ; out_qunlock : gfs2_quota_unlock ( ip ) ; out_alloc_put : gfs2_alloc_put ( ip ) ; out_unlock : gfs2_glock_dq ( & ip -> i_gh ) ; out_uninit : gfs2_holder_uninit ( & ip -> i_gh ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . sb_bsize_shift ; loff_t max_chunk_size = UINT_MAX & bsize_mask ; <S2SV_ModStart> ( ip , ( len > max_chunk_size ) ? max_chunk_size : len , <S2SV_ModEnd> & max_bytes ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16229\n\n```\nCWE-125 static int dccp_print_option ( netdissect_options * ndo , const u_char * option , u_int hlen ) { uint8_t optlen , i ; ND_TCHECK ( * option ) ; if ( * option >= 32 ) { ND_TCHECK ( * ( option + 1 ) ) ; optlen = * ( option + 1 ) ; if ( optlen < 2 ) { if ( * option >= 128 ) ND_PRINT ( ( ndo , \"CCID<S2SV_blank>option<S2SV_blank>%u<S2SV_blank>optlen<S2SV_blank>too<S2SV_blank>short\" , * option ) ) ; else ND_PRINT ( ( ndo , \"%s<S2SV_blank>optlen<S2SV_blank>too<S2SV_blank>short\" , tok2str ( dccp_option_values , \"Option<S2SV_blank>%u\" , * option ) ) ) ; return 0 ; } } else optlen = 1 ; if ( hlen < optlen ) { if ( * option >= 128 ) ND_PRINT ( ( ndo , \"CCID<S2SV_blank>option<S2SV_blank>%u<S2SV_blank>optlen<S2SV_blank>goes<S2SV_blank>past<S2SV_blank>header<S2SV_blank>length\" , * option ) ) ; else ND_PRINT ( ( ndo , \"%s<S2SV_blank>optlen<S2SV_blank>goes<S2SV_blank>past<S2SV_blank>header<S2SV_blank>length\" , tok2str ( dccp_option_values , \"Option<S2SV_blank>%u\" , * option ) ) ) ; return 0 ; } ND_TCHECK2 ( * option , optlen ) ; if ( * option >= 128 ) { ND_PRINT ( ( ndo , \"CCID<S2SV_blank>option<S2SV_blank>%d\" , * option ) ) ; switch ( optlen ) { case 4 : ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_16BITS ( option + 2 ) ) ) ; break ; case 6 : ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( option + 2 ) ) ) ; break ; default : break ; } } else { ND_PRINT ( ( ndo , \"%s\" , tok2str ( dccp_option_values , \"Option<S2SV_blank>%u\" , * option ) ) ) ; switch ( * option ) { case 32 : case 33 : case 34 : case 35 : if ( optlen < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>optlen<S2SV_blank>too<S2SV_blank>short\" ) ) ; return optlen ; } if ( * ( option + 2 ) < 10 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , dccp_feature_nums [ * ( option + 2 ) ] ) ) ; for ( i = 0 ; i < optlen - 3 ; i ++ ) ND_PRINT ( ( ndo , \"<S2SV_blank>%d\" , * ( option + 3 + i ) ) ) ; } break ; case 36 : if ( optlen > 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>0x\" ) ) ; for ( i = 0 ; i < optlen - 2 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , * ( option + 2 + i ) ) ) ; } break ; case 37 : for ( i = 0 ; i < optlen - 2 ; i ++ ) ND_PRINT ( ( ndo , \"<S2SV_blank>%d\" , * ( option + 2 + i ) ) ) ; break ; case 38 : if ( optlen > 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>0x\" ) ) ; for ( i = 0 ; i < optlen - 2 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , * ( option + 2 + i ) ) ) ; } break ; case 39 : if ( optlen > 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>0x\" ) ) ; for ( i = 0 ; i < optlen - 2 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , * ( option + 2 + i ) ) ) ; } break ; case 40 : if ( optlen > 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>0x\" ) ) ; for ( i = 0 ; i < optlen - 2 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , * ( option + 2 + i ) ) ) ; } break ; case 41 : <S2SV_StartBug> if ( optlen == 4 ) <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( option + 2 ) ) ) ; else <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>optlen<S2SV_blank>!=<S2SV_blank>4\" ) ) ; <S2SV_EndBug> break ; case 42 : <S2SV_StartBug> if ( optlen == 4 ) <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( option + 2 ) ) ) ; <S2SV_EndBug> else <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>optlen<S2SV_blank>!=<S2SV_blank>4\" ) ) ; <S2SV_EndBug> break ; case 43 : if ( optlen == 6 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( option + 2 ) ) ) ; else if ( optlen == 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_16BITS ( option + 2 ) ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>optlen<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>or<S2SV_blank>6\" ) ) ; break ; case 44 : if ( optlen > 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; for ( i = 0 ; i < optlen - 2 ; i ++ ) ND_PRINT ( ( ndo , \"%02x\" , * ( option + 2 + i ) ) ) ; } break ; } } return optlen ; trunc : ND_PRINT ( ( ndo , \"%s\" , tstr ) ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( optlen == 6 <S2SV_ModEnd> ) ND_PRINT ( <S2SV_ModStart> ( ndo , \"<S2SV_blank>[optlen<S2SV_blank>!=<S2SV_blank>6]\" <S2SV_ModEnd> ) ) ; <S2SV_ModStart> case 42 : switch ( optlen ) { case 6 : ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( option + 2 ) ) ) ; break ; case 8 : ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( option + 2 ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(elapsed<S2SV_blank>time<S2SV_blank>%u)\" , EXTRACT_16BITS ( option + 6 ) ) ) ; break ; case 10 : ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( option + 2 ) ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(elapsed<S2SV_blank>time<S2SV_blank>%u)\" , EXTRACT_32BITS ( option + 6 ) ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>[optlen<S2SV_blank>!=<S2SV_blank>6<S2SV_blank>or<S2SV_blank>8<S2SV_blank>or<S2SV_blank>10]\" ) ) ; break ; } break ; case 43 : if ( optlen == 6 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( option + 2 ) ) ) ; else <S2SV_ModStart> , \"<S2SV_blank>%u\" , EXTRACT_16BITS <S2SV_ModEnd> ( option + <S2SV_ModStart> ( ndo , \"<S2SV_blank>[optlen<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>or<S2SV_blank>6]\" <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13019\n\n```\nCWE-125 void pgm_print ( netdissect_options * ndo , register const u_char * bp , register u_int length , register const u_char * bp2 ) { register const struct pgm_header * pgm ; register const struct ip * ip ; register char ch ; uint16_t sport , dport ; u_int nla_afnum ; char nla_buf [ INET6_ADDRSTRLEN ] ; register const struct ip6_hdr * ip6 ; uint8_t opt_type , opt_len ; uint32_t seq , opts_len , len , offset ; pgm = ( const struct pgm_header * ) bp ; ip = ( const struct ip * ) bp2 ; if ( IP_V ( ip ) == 6 ) ip6 = ( const struct ip6_hdr * ) bp2 ; else ip6 = NULL ; ch = '\\\\0' ; if ( ! ND_TTEST ( pgm -> pgm_dport ) ) { if ( ip6 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) ) ) ; return ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ipaddr_string ( ndo , & ip -> ip_src ) , ipaddr_string ( ndo , & ip -> ip_dst ) ) ) ; return ; } } sport = EXTRACT_16BITS ( & pgm -> pgm_sport ) ; dport = EXTRACT_16BITS ( & pgm -> pgm_dport ) ; if ( ip6 ) { if ( ip6 -> ip6_nxt == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , tcpport_string ( ndo , sport ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } else { if ( ip -> ip_p == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ipaddr_string ( ndo , & ip -> ip_src ) , tcpport_string ( ndo , sport ) , ipaddr_string ( ndo , & ip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } ND_TCHECK ( * pgm ) ; ND_PRINT ( ( ndo , \"PGM,<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ) ; if ( ! ndo -> ndo_vflag ) return ; ND_PRINT ( ( ndo , \"<S2SV_blank>0x%02x%02x%02x%02x%02x%02x<S2SV_blank>\" , pgm -> pgm_gsid [ 0 ] , pgm -> pgm_gsid [ 1 ] , pgm -> pgm_gsid [ 2 ] , pgm -> pgm_gsid [ 3 ] , pgm -> pgm_gsid [ 4 ] , pgm -> pgm_gsid [ 5 ] ) ) ; switch ( pgm -> pgm_type ) { case PGM_SPM : { const struct pgm_spm * spm ; spm = ( const struct pgm_spm * ) ( pgm + 1 ) ; ND_TCHECK ( * spm ) ; bp = ( const u_char * ) ( spm + 1 ) ; switch ( EXTRACT_16BITS ( & spm -> pgms_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"SPM<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>lead<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s\" , EXTRACT_32BITS ( & spm -> pgms_seq ) , EXTRACT_32BITS ( & spm -> pgms_trailseq ) , EXTRACT_32BITS ( & spm -> pgms_leadseq ) , nla_buf ) ) ; break ; } case PGM_POLL : { const struct pgm_poll * poll_msg ; poll_msg = ( const struct pgm_poll * ) ( pgm + 1 ) ; ND_TCHECK ( * poll_msg ) ; ND_PRINT ( ( ndo , \"POLL<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u\" , EXTRACT_32BITS ( & poll_msg -> pgmp_seq ) , EXTRACT_16BITS ( & poll_msg -> pgmp_round ) ) ) ; bp = ( const u_char * ) ( poll_msg + 1 ) ; break ; } case PGM_POLR : { const struct pgm_polr * polr ; uint32_t ivl , rnd , mask ; polr = ( const struct pgm_polr * ) ( pgm + 1 ) ; ND_TCHECK ( * polr ) ; bp = ( const u_char * ) ( polr + 1 ) ; switch ( EXTRACT_16BITS ( & polr -> pgmp_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; ivl = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; rnd = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; mask = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"POLR<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>rnd<S2SV_blank>0x%08x<S2SV_blank>\" \"mask<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & polr -> pgmp_seq ) , EXTRACT_16BITS ( & polr -> pgmp_round ) , nla_buf , ivl , rnd , mask ) ) ; break ; } case PGM_ODATA : { const struct pgm_data * odata ; odata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * odata ) ; ND_PRINT ( ( ndo , \"ODATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & odata -> pgmd_trailseq ) , EXTRACT_32BITS ( & odata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( odata + 1 ) ; break ; } case PGM_RDATA : { const struct pgm_data * rdata ; rdata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * rdata ) ; ND_PRINT ( ( ndo , \"RDATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & rdata -> pgmd_trailseq ) , EXTRACT_32BITS ( & rdata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( rdata + 1 ) ; break ; } case PGM_NAK : case PGM_NULLNAK : case PGM_NCF : { const struct pgm_nak * nak ; char source_buf [ INET6_ADDRSTRLEN ] , group_buf [ INET6_ADDRSTRLEN ] ; nak = ( const struct pgm_nak * ) ( pgm + 1 ) ; ND_TCHECK ( * nak ) ; bp = ( const u_char * ) ( nak + 1 ) ; switch ( EXTRACT_16BITS ( & nak -> pgmn_source_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( EXTRACT_16BITS ( bp ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } switch ( pgm -> pgm_type ) { case PGM_NAK : ND_PRINT ( ( ndo , \"NAK<S2SV_blank>\" ) ) ; break ; case PGM_NULLNAK : ND_PRINT ( ( ndo , \"NNAK<S2SV_blank>\" ) ) ; break ; case PGM_NCF : ND_PRINT ( ( ndo , \"NCF<S2SV_blank>\" ) ) ; break ; default : break ; } ND_PRINT ( ( ndo , \"(%s<S2SV_blank>-><S2SV_blank>%s),<S2SV_blank>seq<S2SV_blank>%u\" , source_buf , group_buf , EXTRACT_32BITS ( & nak -> pgmn_seq ) ) ) ; break ; } case PGM_ACK : { const struct pgm_ack * ack ; ack = ( const struct pgm_ack * ) ( pgm + 1 ) ; ND_TCHECK ( * ack ) ; ND_PRINT ( ( ndo , \"ACK<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & ack -> pgma_rx_max_seq ) ) ) ; bp = ( const u_char * ) ( ack + 1 ) ; break ; } case PGM_SPMR : ND_PRINT ( ( ndo , \"SPMR\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"UNKNOWN<S2SV_blank>type<S2SV_blank>0x%02x\" , pgm -> pgm_type ) ) ; break ; } if ( pgm -> pgm_options & PGM_OPT_BIT_PRESENT ) { if ( ! ND_TTEST2 ( * bp , PGM_MIN_OPT_LEN ) ) { ND_PRINT ( ( ndo , \"[|OPT]\" ) ) ; return ; } opt_type = * bp ++ ; if ( ( opt_type & PGM_OPT_MASK ) != PGM_OPT_LENGTH ) { ND_PRINT ( ( ndo , \"[First<S2SV_blank>option<S2SV_blank>bad,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>PGM_OPT_LENGTH,<S2SV_blank>is<S2SV_blank>%u]\" , opt_type & PGM_OPT_MASK ) ) ; return ; } opt_len = * bp ++ ; if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } opts_len = EXTRACT_16BITS ( bp ) ; if ( opts_len < 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>4]\" , opts_len ) ) ; return ; } bp += sizeof ( uint16_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>%d\" , opts_len ) ) ; opts_len -= 4 ; while ( opts_len ) { if ( opts_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } if ( ! ND_TTEST2 ( * bp , 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; } opt_type = * bp ++ ; opt_len = * bp ++ ; if ( opt_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_MIN_OPT_LEN ) ) ; break ; } if ( opts_len < opt_len ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } if ( ! ND_TTEST2 ( * bp , opt_len - 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; } switch ( opt_type & PGM_OPT_MASK ) { case PGM_OPT_LENGTH : <S2SV_StartBug> if ( opt_len != 4 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>(extra?)<S2SV_blank>%d\" , EXTRACT_16BITS ( bp ) ) ) ; <S2SV_EndBug> bp += sizeof ( uint16_t ) ; opts_len -= 4 ; <S2SV_StartBug> break ; <S2SV_EndBug> case PGM_OPT_FRAGMENT : <S2SV_StartBug> if ( opt_len != 16 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FRAGMENT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>16]\" , opt_len ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; <S2SV_StartBug> bp += sizeof ( uint32_t ) ; <S2SV_EndBug> offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>FRAG<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>off<S2SV_blank>%u<S2SV_blank>len<S2SV_blank>%u\" , seq , offset , len ) ) ; <S2SV_StartBug> opts_len -= 16 ; <S2SV_EndBug> break ; case PGM_OPT_NAK_LIST : bp += 2 ; opt_len -= sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>NAK<S2SV_blank>LIST\" ) ) ; while ( opt_len ) { <S2SV_StartBug> if ( opt_len < sizeof ( uint32_t ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Option<S2SV_blank>length<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4]\" ) ) ; return ; } <S2SV_StartBug> ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( bp ) ) ) ; <S2SV_EndBug> bp += sizeof ( uint32_t ) ; opt_len -= sizeof ( uint32_t ) ; <S2SV_StartBug> opts_len -= sizeof ( uint32_t ) ; <S2SV_EndBug> } break ; case PGM_OPT_JOIN : <S2SV_StartBug> if ( opt_len != 8 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_JOIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; <S2SV_StartBug> seq = EXTRACT_32BITS ( bp ) ; <S2SV_EndBug> <S2SV_StartBug> bp += sizeof ( uint32_t ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>JOIN<S2SV_blank>%u\" , seq ) ) ; <S2SV_StartBug> opts_len -= 8 ; <S2SV_EndBug> break ; case PGM_OPT_NAK_BO_IVL : <S2SV_StartBug> if ( opt_len != 12 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_IVL<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12]\" , opt_len ) ) ; return ; } <S2SV_StartBug> bp += 2 ; <S2SV_EndBug> offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>ivlseq<S2SV_blank>%u\" , offset , seq ) ) ; <S2SV_StartBug> opts_len -= 12 ; <S2SV_EndBug> break ; case PGM_OPT_NAK_BO_RNG : <S2SV_StartBug> if ( opt_len != 12 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_RNG<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12]\" , opt_len ) ) ; return ; } <S2SV_StartBug> bp += 2 ; <S2SV_EndBug> offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>max<S2SV_blank>%u<S2SV_blank>min<S2SV_blank>%u\" , offset , seq ) ) ; <S2SV_StartBug> opts_len -= 12 ; <S2SV_EndBug> break ; case PGM_OPT_REDIRECT : bp += 2 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : <S2SV_StartBug> if ( opt_len != 4 + sizeof ( struct in_addr ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; <S2SV_StartBug> opts_len -= 4 + sizeof ( struct in_addr ) ; <S2SV_EndBug> break ; case AFNUM_INET6 : <S2SV_StartBug> if ( opt_len != 4 + sizeof ( struct in6_addr ) ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; <S2SV_StartBug> opts_len -= 4 + sizeof ( struct in6_addr ) ; <S2SV_EndBug> break ; default : goto trunc ; break ; } <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>REDIRECT<S2SV_blank>%s\" , nla_buf ) ) ; <S2SV_EndBug> break ; <S2SV_StartBug> case PGM_OPT_PARITY_PRM : <S2SV_EndBug> <S2SV_StartBug> if ( opt_len != 8 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_PRM<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } <S2SV_StartBug> bp += 2 ; <S2SV_EndBug> len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>MAXTGS<S2SV_blank>%u\" , len ) ) ; <S2SV_StartBug> opts_len -= 8 ; <S2SV_EndBug> break ; case PGM_OPT_PARITY_GRP : <S2SV_StartBug> if ( opt_len != 8 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_GRP<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } <S2SV_StartBug> bp += 2 ; <S2SV_EndBug> seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>GROUP<S2SV_blank>%u\" , seq ) ) ; <S2SV_StartBug> opts_len -= 8 ; <S2SV_EndBug> break ; case PGM_OPT_CURR_TGSIZE : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CURR_TGSIZE<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>ATGS<S2SV_blank>%u\" , len ) ) ; opts_len -= 8 ; break ; case PGM_OPT_NBR_UNREACH : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NBR_UNREACH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NBR_UNREACH\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_PATH_NLA : ND_PRINT ( ( ndo , \"<S2SV_blank>PATH_NLA<S2SV_blank>[%d]\" , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_SYN : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_SYN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>SYN\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_FIN : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FIN\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_RST : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_RST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>RST\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_CR : ND_PRINT ( ( ndo , \"<S2SV_blank>CR\" ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_CRQST : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CRQST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>CRQST\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_PGMCC_DATA : bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != 12 + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= 12 + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != 12 + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= 12 + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>DATA<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; case PGM_OPT_PGMCC_FEEDBACK : bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != 12 + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= 12 + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != 12 + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= 12 + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>FEEDBACK<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>OPT_%02X<S2SV_blank>[%d]<S2SV_blank>\" , opt_type , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; } if ( opt_type & PGM_OPT_END ) break ; } } ND_PRINT ( ( ndo , \"<S2SV_blank>[%u]\" , length ) ) ; if ( ndo -> ndo_packettype == PT_PGM_ZMTP1 && ( pgm -> pgm_type == PGM_ODATA || pgm -> pgm_type == PGM_RDATA ) ) zmtp1_print_datagram ( ndo , bp , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|pgm]\" ) ) ; if ( ch != '\\\\0' ) ND_PRINT ( ( ndo , \">\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case PGM_OPT_LENGTH : # define PGM_OPT_LENGTH_LEN ( 2 + 2 ) <S2SV_ModStart> ( opt_len != PGM_OPT_LENGTH_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_LENGTH_LEN ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>(extra?)<S2SV_blank>%d\" , EXTRACT_16BITS ( bp ) ) ) ; bp += 2 ; opts_len -= PGM_OPT_LENGTH_LEN ; break ; case PGM_OPT_FRAGMENT : # define PGM_OPT_FRAGMENT_LEN ( 2 + 2 + 4 + 4 + 4 ) if ( opt_len != PGM_OPT_FRAGMENT_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FRAGMENT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_FRAGMENT_LEN <S2SV_ModEnd> ) ) ; <S2SV_ModStart> return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FRAG<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>off<S2SV_blank>%u<S2SV_blank>len<S2SV_blank>%u\" , seq , offset , len ) ) ; opts_len -= PGM_OPT_FRAGMENT_LEN ; break ; case PGM_OPT_NAK_LIST : bp += 2 ; opt_len -= 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NAK<S2SV_blank>LIST\" ) ) ; while ( opt_len ) { if ( opt_len < 4 ) { ND_PRINT ( ( ndo , \"[Option<S2SV_blank>length<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4]\" ) ) ; return ; } ND_TCHECK2 ( * bp , 4 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( bp ) ) ) ; bp += 4 ; opt_len -= 4 <S2SV_ModEnd> ; opts_len -= <S2SV_ModStart> -= 4 ; } break ; case PGM_OPT_JOIN : # define PGM_OPT_JOIN_LEN ( 2 + 2 + 4 ) <S2SV_ModEnd> if ( opt_len <S2SV_ModStart> ( opt_len != PGM_OPT_JOIN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_JOIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_JOIN_LEN <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>JOIN<S2SV_blank>%u\" , seq <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ; opts_len -= PGM_OPT_JOIN_LEN ; break ; case PGM_OPT_NAK_BO_IVL : # define PGM_OPT_NAK_BO_IVL_LEN ( 2 + 2 + 4 + 4 ) <S2SV_ModEnd> if ( opt_len <S2SV_ModStart> if ( opt_len != PGM_OPT_NAK_BO_IVL_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_IVL<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NAK_BO_IVL_LEN <S2SV_ModEnd> ) ) ; <S2SV_ModStart> return ; } bp += 2 ; offset = <S2SV_ModEnd> EXTRACT_32BITS ( bp <S2SV_ModStart> ( bp ) ; bp += 4 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>ivlseq<S2SV_blank>%u\" , offset , seq ) <S2SV_ModEnd> ) ; opts_len <S2SV_ModStart> ; opts_len -= PGM_OPT_NAK_BO_IVL_LEN ; break ; case PGM_OPT_NAK_BO_RNG : # define PGM_OPT_NAK_BO_RNG_LEN ( 2 + 2 + 4 + 4 ) <S2SV_ModEnd> if ( opt_len <S2SV_ModStart> ( opt_len != PGM_OPT_NAK_BO_RNG_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_RNG<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NAK_BO_RNG_LEN <S2SV_ModEnd> ) ) ; <S2SV_ModStart> += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; <S2SV_ModStart> ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>max<S2SV_blank>%u<S2SV_blank>min<S2SV_blank>%u\" , offset <S2SV_ModEnd> , seq ) <S2SV_ModStart> ; opts_len -= PGM_OPT_NAK_BO_RNG_LEN ; break ; case PGM_OPT_REDIRECT : # define PGM_OPT_REDIRECT_FIXED_LEN ( 2 + 2 + 2 + 2 ) <S2SV_ModEnd> if ( opt_len <S2SV_ModStart> if ( opt_len < PGM_OPT_REDIRECT_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_REDIRECT_FIXED_LEN ) ) ; return ; } bp += 2 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_REDIRECT_FIXED_LEN <S2SV_ModEnd> ) ) ; <S2SV_ModStart> return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr <S2SV_ModEnd> ) ; opts_len <S2SV_ModStart> ; opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 <S2SV_ModEnd> : if ( <S2SV_ModStart> ( opt_len != PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , PGM_OPT_REDIRECT_FIXED_LEN <S2SV_ModEnd> , opt_len ) <S2SV_ModStart> return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr <S2SV_ModEnd> ) ; opts_len <S2SV_ModStart> ; opts_len -= PGM_OPT_REDIRECT_FIXED_LEN + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>REDIRECT<S2SV_blank>%s\" , nla_buf ) ) ; break ; case PGM_OPT_PARITY_PRM : # define PGM_OPT_PARITY_PRM_LEN ( 2 + 2 + 4 ) <S2SV_ModEnd> if ( opt_len <S2SV_ModStart> ( opt_len != PGM_OPT_PARITY_PRM_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_PRM<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_PARITY_PRM_LEN ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>MAXTGS<S2SV_blank>%u\" , len ) <S2SV_ModEnd> ) ; opts_len <S2SV_ModStart> ; opts_len -= PGM_OPT_PARITY_PRM_LEN ; break ; case PGM_OPT_PARITY_GRP : # define PGM_OPT_PARITY_GRP_LEN ( 2 + 2 + 4 ) <S2SV_ModEnd> if ( opt_len <S2SV_ModStart> ( opt_len != PGM_OPT_PARITY_GRP_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_GRP<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_PARITY_GRP_LEN ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>GROUP<S2SV_blank>%u\" , seq ) <S2SV_ModEnd> ) ; opts_len <S2SV_ModStart> ; opts_len -= PGM_OPT_PARITY_GRP_LEN ; break ; case PGM_OPT_CURR_TGSIZE : # define PGM_OPT_CURR_TGSIZE_LEN ( 2 + 2 + 4 ) if ( opt_len != PGM_OPT_CURR_TGSIZE_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CURR_TGSIZE<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_CURR_TGSIZE_LEN ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += 4 ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>ATGS<S2SV_blank>%u\" , len ) ) ; opts_len -= PGM_OPT_CURR_TGSIZE_LEN ; break ; case PGM_OPT_NBR_UNREACH : # define PGM_OPT_NBR_UNREACH_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_NBR_UNREACH_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NBR_UNREACH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_NBR_UNREACH_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NBR_UNREACH\" ) ) ; opts_len -= PGM_OPT_NBR_UNREACH_LEN ; break ; case PGM_OPT_PATH_NLA : ND_PRINT ( ( ndo , \"<S2SV_blank>PATH_NLA<S2SV_blank>[%d]\" , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_SYN : # define PGM_OPT_SYN_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_SYN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_SYN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_SYN_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>SYN\" ) ) ; opts_len -= PGM_OPT_SYN_LEN ; break ; case PGM_OPT_FIN : # define PGM_OPT_FIN_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_FIN_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_FIN_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FIN\" ) ) ; opts_len -= PGM_OPT_FIN_LEN ; break ; case PGM_OPT_RST : # define PGM_OPT_RST_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_RST_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_RST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_RST_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>RST\" ) ) ; opts_len -= PGM_OPT_RST_LEN ; break ; case PGM_OPT_CR : ND_PRINT ( ( ndo , \"<S2SV_blank>CR\" ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_CRQST : # define PGM_OPT_CRQST_LEN ( 2 + 2 ) if ( opt_len != PGM_OPT_CRQST_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CRQST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u]\" , opt_len , PGM_OPT_CRQST_LEN ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>CRQST\" ) ) ; opts_len -= PGM_OPT_CRQST_LEN ; break ; case PGM_OPT_PGMCC_DATA : # define PGM_OPT_PGMCC_DATA_FIXED_LEN ( 2 + 2 + 4 + 2 + 2 ) if ( opt_len < PGM_OPT_PGMCC_DATA_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != PGM_OPT_PGMCC_DATA_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_DATA_FIXED_LEN ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= PGM_OPT_PGMCC_DATA_FIXED_LEN <S2SV_ModEnd> + sizeof ( <S2SV_ModStart> ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>DATA<S2SV_blank>%u<S2SV_blank>%s\" , offset <S2SV_ModEnd> , nla_buf ) <S2SV_ModStart> break ; case PGM_OPT_PGMCC_FEEDBACK : # define PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ( 2 + 2 + 4 + 2 + 2 ) <S2SV_ModEnd> if ( opt_len <S2SV_ModStart> if ( opt_len < PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>PGM_OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += 4 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += 2 + 2 ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN <S2SV_ModEnd> ) ) ; <S2SV_ModStart> return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr <S2SV_ModEnd> ) ; opts_len <S2SV_ModStart> ; opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 <S2SV_ModEnd> : if ( <S2SV_ModStart> ( opt_len != PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_FEEDBACK<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len , PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN <S2SV_ModEnd> ) ) ; <S2SV_ModStart> return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr <S2SV_ModEnd> ) ; opts_len <S2SV_ModStart> ; opts_len -= PGM_OPT_PGMCC_FEEDBACK_FIXED_LEN <S2SV_ModEnd> + sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-27153\n\n```\nCWE-415 <S2SV_StartBug> static void cancel_att_send_op ( struct att_send_op * op ) <S2SV_EndBug> { if ( op -> destroy ) op -> destroy ( op -> user_data ) ; op -> user_data = NULL ; op -> callback = NULL ; op -> destroy = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void cancel_att_send_op ( void * data ) { <S2SV_ModStart> att_send_op * op = data ; <S2SV_ModEnd> if ( op\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11376\n\n```\nCWE-125 static void process_constructors ( RBinFile * bf , RList * ret , int bits ) { RList * secs = sections ( bf ) ; RListIter * iter ; RBinSection * sec ; int i , type ; r_list_foreach ( secs , iter , sec ) { type = - 1 ; if ( ! strcmp ( sec -> name , \".fini_array\" ) ) { type = R_BIN_ENTRY_TYPE_FINI ; } else if ( ! strcmp ( sec -> name , \".init_array\" ) ) { type = R_BIN_ENTRY_TYPE_INIT ; } else if ( ! strcmp ( sec -> name , \".preinit_array\" ) ) { type = R_BIN_ENTRY_TYPE_PREINIT ; } if ( type != - 1 ) { ut8 * buf = calloc ( sec -> size , 1 ) ; if ( ! buf ) { continue ; } ( void ) r_buf_read_at ( bf -> buf , sec -> paddr , buf , sec -> size ) ; if ( bits == 32 ) { <S2SV_StartBug> for ( i = 0 ; i < sec -> size ; i += 4 ) { <S2SV_EndBug> ut32 addr32 = r_read_le32 ( buf + i ) ; if ( addr32 ) { RBinAddr * ba = newEntry ( sec -> paddr + i , ( ut64 ) addr32 , type , bits ) ; r_list_append ( ret , ba ) ; } } } else { <S2SV_StartBug> for ( i = 0 ; i < sec -> size ; i += 8 ) { <S2SV_EndBug> ut64 addr64 = r_read_le64 ( buf + i ) ; if ( addr64 ) { RBinAddr * ba = newEntry ( sec -> paddr + i , addr64 , type , bits ) ; r_list_append ( ret , ba ) ; } } } free ( buf ) ; } } r_list_free ( secs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; ( i + 3 ) <S2SV_ModEnd> < sec -> <S2SV_ModStart> = 0 ; ( i + 7 ) <S2SV_ModEnd> < sec ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17568\n\n```\nCWE-190 void nw_cache_free ( nw_cache * cache , void * obj ) { if ( cache -> free < cache -> free_total ) { cache -> free_arr [ cache -> free ++ ] = obj ; <S2SV_StartBug> } else { <S2SV_EndBug> uint32_t new_free_total = cache -> free_total * 2 ; void * new_arr = realloc ( cache -> free_arr , new_free_total * sizeof ( void * ) ) ; if ( new_arr ) { cache -> free_total = new_free_total ; cache -> free_arr = new_arr ; cache -> free_arr [ cache -> free ++ ] = obj ; } else { free ( obj ) ; } <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } else if ( cache -> free_total < NW_CACHE_MAX_SIZE ) <S2SV_ModStart> ; } } else { free ( obj ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9560\n\n```\nCWE-787 static int jpc_dec_tileinit ( jpc_dec_t * dec , jpc_dec_tile_t * tile ) { jpc_dec_tcomp_t * tcomp ; int compno ; int rlvlno ; jpc_dec_rlvl_t * rlvl ; jpc_dec_band_t * band ; jpc_dec_prc_t * prc ; int bndno ; jpc_tsfb_band_t * bnd ; int bandno ; jpc_dec_ccp_t * ccp ; int prccnt ; jpc_dec_cblk_t * cblk ; int cblkcnt ; uint_fast32_t tlprcxstart ; uint_fast32_t tlprcystart ; uint_fast32_t brprcxend ; uint_fast32_t brprcyend ; uint_fast32_t tlcbgxstart ; uint_fast32_t tlcbgystart ; uint_fast32_t brcbgxend ; uint_fast32_t brcbgyend ; uint_fast32_t cbgxstart ; uint_fast32_t cbgystart ; uint_fast32_t cbgxend ; uint_fast32_t cbgyend ; uint_fast32_t tlcblkxstart ; uint_fast32_t tlcblkystart ; uint_fast32_t brcblkxend ; uint_fast32_t brcblkyend ; uint_fast32_t cblkxstart ; uint_fast32_t cblkystart ; uint_fast32_t cblkxend ; uint_fast32_t cblkyend ; uint_fast32_t tmpxstart ; uint_fast32_t tmpystart ; uint_fast32_t tmpxend ; uint_fast32_t tmpyend ; jpc_dec_cp_t * cp ; <S2SV_StartBug> jpc_tsfb_band_t bnds [ 64 ] ; <S2SV_EndBug> jpc_pchg_t * pchg ; int pchgno ; jpc_dec_cmpt_t * cmpt ; cp = tile -> cp ; tile -> realmode = 0 ; if ( cp -> mctid == JPC_MCT_ICT ) { tile -> realmode = 1 ; } for ( compno = 0 , tcomp = tile -> tcomps , cmpt = dec -> cmpts ; compno < dec -> numcomps ; ++ compno , ++ tcomp , ++ cmpt ) { ccp = & tile -> cp -> ccps [ compno ] ; if ( ccp -> qmfbid == JPC_COX_INS ) { tile -> realmode = 1 ; } tcomp -> numrlvls = ccp -> numrlvls ; if ( ! ( tcomp -> rlvls = jas_alloc2 ( tcomp -> numrlvls , sizeof ( jpc_dec_rlvl_t ) ) ) ) { return - 1 ; } if ( ! ( tcomp -> data = jas_seq2d_create ( JPC_CEILDIV ( tile -> xstart , cmpt -> hstep ) , JPC_CEILDIV ( tile -> ystart , cmpt -> vstep ) , JPC_CEILDIV ( tile -> xend , cmpt -> hstep ) , JPC_CEILDIV ( tile -> yend , cmpt -> vstep ) ) ) ) { return - 1 ; } if ( ! ( tcomp -> tsfb = jpc_cod_gettsfb ( ccp -> qmfbid , tcomp -> numrlvls - 1 ) ) ) { return - 1 ; } { jpc_tsfb_getbands ( tcomp -> tsfb , jas_seq2d_xstart ( tcomp -> data ) , jas_seq2d_ystart ( tcomp -> data ) , jas_seq2d_xend ( tcomp -> data ) , jas_seq2d_yend ( tcomp -> data ) , bnds ) ; } for ( rlvlno = 0 , rlvl = tcomp -> rlvls ; rlvlno < tcomp -> numrlvls ; ++ rlvlno , ++ rlvl ) { rlvl -> bands = 0 ; rlvl -> xstart = JPC_CEILDIVPOW2 ( tcomp -> xstart , tcomp -> numrlvls - 1 - rlvlno ) ; rlvl -> ystart = JPC_CEILDIVPOW2 ( tcomp -> ystart , tcomp -> numrlvls - 1 - rlvlno ) ; rlvl -> xend = JPC_CEILDIVPOW2 ( tcomp -> xend , tcomp -> numrlvls - 1 - rlvlno ) ; rlvl -> yend = JPC_CEILDIVPOW2 ( tcomp -> yend , tcomp -> numrlvls - 1 - rlvlno ) ; rlvl -> prcwidthexpn = ccp -> prcwidthexpns [ rlvlno ] ; rlvl -> prcheightexpn = ccp -> prcheightexpns [ rlvlno ] ; tlprcxstart = JPC_FLOORDIVPOW2 ( rlvl -> xstart , rlvl -> prcwidthexpn ) << rlvl -> prcwidthexpn ; tlprcystart = JPC_FLOORDIVPOW2 ( rlvl -> ystart , rlvl -> prcheightexpn ) << rlvl -> prcheightexpn ; brprcxend = JPC_CEILDIVPOW2 ( rlvl -> xend , rlvl -> prcwidthexpn ) << rlvl -> prcwidthexpn ; brprcyend = JPC_CEILDIVPOW2 ( rlvl -> yend , rlvl -> prcheightexpn ) << rlvl -> prcheightexpn ; rlvl -> numhprcs = ( brprcxend - tlprcxstart ) >> rlvl -> prcwidthexpn ; rlvl -> numvprcs = ( brprcyend - tlprcystart ) >> rlvl -> prcheightexpn ; rlvl -> numprcs = rlvl -> numhprcs * rlvl -> numvprcs ; if ( rlvl -> xstart >= rlvl -> xend || rlvl -> ystart >= rlvl -> yend ) { rlvl -> bands = 0 ; rlvl -> numprcs = 0 ; rlvl -> numhprcs = 0 ; rlvl -> numvprcs = 0 ; continue ; } if ( ! rlvlno ) { tlcbgxstart = tlprcxstart ; tlcbgystart = tlprcystart ; brcbgxend = brprcxend ; brcbgyend = brprcyend ; rlvl -> cbgwidthexpn = rlvl -> prcwidthexpn ; rlvl -> cbgheightexpn = rlvl -> prcheightexpn ; } else { tlcbgxstart = JPC_CEILDIVPOW2 ( tlprcxstart , 1 ) ; tlcbgystart = JPC_CEILDIVPOW2 ( tlprcystart , 1 ) ; brcbgxend = JPC_CEILDIVPOW2 ( brprcxend , 1 ) ; brcbgyend = JPC_CEILDIVPOW2 ( brprcyend , 1 ) ; rlvl -> cbgwidthexpn = rlvl -> prcwidthexpn - 1 ; rlvl -> cbgheightexpn = rlvl -> prcheightexpn - 1 ; } rlvl -> cblkwidthexpn = JAS_MIN ( ccp -> cblkwidthexpn , rlvl -> cbgwidthexpn ) ; rlvl -> cblkheightexpn = JAS_MIN ( ccp -> cblkheightexpn , rlvl -> cbgheightexpn ) ; rlvl -> numbands = ( ! rlvlno ) ? 1 : 3 ; if ( ! ( rlvl -> bands = jas_alloc2 ( rlvl -> numbands , sizeof ( jpc_dec_band_t ) ) ) ) { return - 1 ; } for ( bandno = 0 , band = rlvl -> bands ; bandno < rlvl -> numbands ; ++ bandno , ++ band ) { bndno = ( ! rlvlno ) ? 0 : ( 3 * ( rlvlno - 1 ) + bandno + 1 ) ; bnd = & bnds [ bndno ] ; band -> orient = bnd -> orient ; band -> stepsize = ccp -> stepsizes [ bndno ] ; band -> analgain = JPC_NOMINALGAIN ( ccp -> qmfbid , tcomp -> numrlvls - 1 , rlvlno , band -> orient ) ; band -> absstepsize = jpc_calcabsstepsize ( band -> stepsize , cmpt -> prec + band -> analgain ) ; band -> numbps = ccp -> numguardbits + JPC_QCX_GETEXPN ( band -> stepsize ) - 1 ; band -> roishift = ( ccp -> roishift + band -> numbps >= JPC_PREC ) ? ( JPC_PREC - 1 - band -> numbps ) : ccp -> roishift ; band -> data = 0 ; band -> prcs = 0 ; if ( bnd -> xstart == bnd -> xend || bnd -> ystart == bnd -> yend ) { continue ; } if ( ! ( band -> data = jas_seq2d_create ( 0 , 0 , 0 , 0 ) ) ) { return - 1 ; } jas_seq2d_bindsub ( band -> data , tcomp -> data , bnd -> locxstart , bnd -> locystart , bnd -> locxend , bnd -> locyend ) ; jas_seq2d_setshift ( band -> data , bnd -> xstart , bnd -> ystart ) ; assert ( rlvl -> numprcs ) ; if ( ! ( band -> prcs = jas_alloc2 ( rlvl -> numprcs , sizeof ( jpc_dec_prc_t ) ) ) ) { return - 1 ; } cbgxstart = tlcbgxstart ; cbgystart = tlcbgystart ; for ( prccnt = rlvl -> numprcs , prc = band -> prcs ; prccnt > 0 ; -- prccnt , ++ prc ) { cbgxend = cbgxstart + ( 1 << rlvl -> cbgwidthexpn ) ; cbgyend = cbgystart + ( 1 << rlvl -> cbgheightexpn ) ; prc -> xstart = JAS_MAX ( cbgxstart , JAS_CAST ( uint_fast32_t , jas_seq2d_xstart ( band -> data ) ) ) ; prc -> ystart = JAS_MAX ( cbgystart , JAS_CAST ( uint_fast32_t , jas_seq2d_ystart ( band -> data ) ) ) ; prc -> xend = JAS_MIN ( cbgxend , JAS_CAST ( uint_fast32_t , jas_seq2d_xend ( band -> data ) ) ) ; prc -> yend = JAS_MIN ( cbgyend , JAS_CAST ( uint_fast32_t , jas_seq2d_yend ( band -> data ) ) ) ; if ( prc -> xend > prc -> xstart && prc -> yend > prc -> ystart ) { tlcblkxstart = JPC_FLOORDIVPOW2 ( prc -> xstart , rlvl -> cblkwidthexpn ) << rlvl -> cblkwidthexpn ; tlcblkystart = JPC_FLOORDIVPOW2 ( prc -> ystart , rlvl -> cblkheightexpn ) << rlvl -> cblkheightexpn ; brcblkxend = JPC_CEILDIVPOW2 ( prc -> xend , rlvl -> cblkwidthexpn ) << rlvl -> cblkwidthexpn ; brcblkyend = JPC_CEILDIVPOW2 ( prc -> yend , rlvl -> cblkheightexpn ) << rlvl -> cblkheightexpn ; prc -> numhcblks = ( brcblkxend - tlcblkxstart ) >> rlvl -> cblkwidthexpn ; prc -> numvcblks = ( brcblkyend - tlcblkystart ) >> rlvl -> cblkheightexpn ; prc -> numcblks = prc -> numhcblks * prc -> numvcblks ; assert ( prc -> numcblks > 0 ) ; if ( ! ( prc -> incltagtree = jpc_tagtree_create ( prc -> numhcblks , prc -> numvcblks ) ) ) { return - 1 ; } if ( ! ( prc -> numimsbstagtree = jpc_tagtree_create ( prc -> numhcblks , prc -> numvcblks ) ) ) { return - 1 ; } if ( ! ( prc -> cblks = jas_alloc2 ( prc -> numcblks , sizeof ( jpc_dec_cblk_t ) ) ) ) { return - 1 ; } cblkxstart = cbgxstart ; cblkystart = cbgystart ; for ( cblkcnt = prc -> numcblks , cblk = prc -> cblks ; cblkcnt > 0 ; ) { cblkxend = cblkxstart + ( 1 << rlvl -> cblkwidthexpn ) ; cblkyend = cblkystart + ( 1 << rlvl -> cblkheightexpn ) ; tmpxstart = JAS_MAX ( cblkxstart , prc -> xstart ) ; tmpystart = JAS_MAX ( cblkystart , prc -> ystart ) ; tmpxend = JAS_MIN ( cblkxend , prc -> xend ) ; tmpyend = JAS_MIN ( cblkyend , prc -> yend ) ; if ( tmpxend > tmpxstart && tmpyend > tmpystart ) { cblk -> firstpassno = - 1 ; cblk -> mqdec = 0 ; cblk -> nulldec = 0 ; cblk -> flags = 0 ; cblk -> numpasses = 0 ; cblk -> segs . head = 0 ; cblk -> segs . tail = 0 ; cblk -> curseg = 0 ; cblk -> numimsbs = 0 ; cblk -> numlenbits = 3 ; cblk -> flags = 0 ; if ( ! ( cblk -> data = jas_seq2d_create ( 0 , 0 , 0 , 0 ) ) ) { return - 1 ; } jas_seq2d_bindsub ( cblk -> data , band -> data , tmpxstart , tmpystart , tmpxend , tmpyend ) ; ++ cblk ; -- cblkcnt ; } cblkxstart += 1 << rlvl -> cblkwidthexpn ; if ( cblkxstart >= cbgxend ) { cblkxstart = cbgxstart ; cblkystart += 1 << rlvl -> cblkheightexpn ; } } } else { prc -> cblks = 0 ; prc -> incltagtree = 0 ; prc -> numimsbstagtree = 0 ; } cbgxstart += 1 << rlvl -> cbgwidthexpn ; if ( cbgxstart >= brcbgxend ) { cbgxstart = tlcbgxstart ; cbgystart += 1 << rlvl -> cbgheightexpn ; } } } } } if ( ! ( tile -> pi = jpc_dec_pi_create ( dec , tile ) ) ) { return - 1 ; } for ( pchgno = 0 ; pchgno < jpc_pchglist_numpchgs ( tile -> cp -> pchglist ) ; ++ pchgno ) { pchg = jpc_pchg_copy ( jpc_pchglist_get ( tile -> cp -> pchglist , pchgno ) ) ; assert ( pchg ) ; jpc_pi_addpchg ( tile -> pi , pchg ) ; } jpc_pi_init ( tile -> pi ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> jpc_tsfb_band_t bnds [ JPC_MAXBANDS <S2SV_ModEnd> ] ; jpc_pchg_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0217\n\n```\nCWE-399 static void xen_netbk_fill_frags ( struct xen_netbk * netbk , struct sk_buff * skb ) { struct skb_shared_info * shinfo = skb_shinfo ( skb ) ; int nr_frags = shinfo -> nr_frags ; int i ; for ( i = 0 ; i < nr_frags ; i ++ ) { skb_frag_t * frag = shinfo -> frags + i ; struct xen_netif_tx_request * txp ; struct page * page ; u16 pending_idx ; pending_idx = frag_get_pending_idx ( frag ) ; txp = & netbk -> pending_tx_info [ pending_idx ] . req ; page = virt_to_page ( idx_to_kaddr ( netbk , pending_idx ) ) ; __skb_fill_page_desc ( skb , i , page , txp -> offset , txp -> size ) ; skb -> len += txp -> size ; skb -> data_len += txp -> size ; skb -> truesize += txp -> size ; get_page ( netbk -> mmap_pages [ pending_idx ] ) ; <S2SV_StartBug> xen_netbk_idx_release ( netbk , pending_idx ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> netbk , pending_idx , XEN_NETIF_RSP_OKAY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static void __update_open_stateid ( struct nfs4_state * state , nfs4_stateid * open_stateid , const nfs4_stateid * deleg_stateid , int open_flags ) <S2SV_EndBug> { write_seqlock ( & state -> seqlock ) ; if ( deleg_stateid != NULL ) { memcpy ( state -> stateid . data , deleg_stateid -> data , sizeof ( state -> stateid . data ) ) ; set_bit ( NFS_DELEGATED_STATE , & state -> flags ) ; } if ( open_stateid != NULL ) <S2SV_StartBug> nfs_set_open_stateid_locked ( state , open_stateid , open_flags ) ; <S2SV_EndBug> write_sequnlock ( & state -> seqlock ) ; spin_lock ( & state -> owner -> so_lock ) ; <S2SV_StartBug> update_open_stateflags ( state , open_flags ) ; <S2SV_EndBug> spin_unlock ( & state -> owner -> so_lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * deleg_stateid , fmode_t fmode <S2SV_ModEnd> ) { write_seqlock <S2SV_ModStart> , open_stateid , fmode <S2SV_ModEnd> ) ; write_sequnlock <S2SV_ModStart> ( state , fmode <S2SV_ModEnd> ) ; spin_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-436(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6560\n\n```\nCWE-436 static void flatpak_proxy_client_finalize ( GObject * object ) { FlatpakProxyClient * client = FLATPAK_PROXY_CLIENT ( object ) ; client -> proxy -> clients = g_list_remove ( client -> proxy -> clients , client ) ; <S2SV_StartBug> g_clear_object ( & client -> proxy ) ; <S2SV_EndBug> g_hash_table_destroy ( client -> rewrite_reply ) ; g_hash_table_destroy ( client -> get_owner_reply ) ; g_hash_table_destroy ( client -> unique_id_policy ) ; free_side ( & client -> client_side ) ; free_side ( & client -> bus_side ) ; G_OBJECT_CLASS ( flatpak_proxy_client_parent_class ) -> finalize ( object ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> client -> proxy ) ; g_byte_array_free ( client -> auth_buffer , TRUE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20542\n\n```\nCWE-119 int my_csr_reader ( const char * i_csr_file_in , unsigned int * * o_row_idx , unsigned int * * o_column_idx , REALTYPE * * o_values , unsigned int * o_row_count , unsigned int * o_column_count , unsigned int * o_element_count ) { FILE * l_csr_file_handle ; const unsigned int l_line_length = 512 ; char l_line [ 512 + 1 ] ; unsigned int l_header_read = 0 ; unsigned int * l_row_idx_id = NULL ; unsigned int l_i = 0 ; l_csr_file_handle = fopen ( i_csr_file_in , \"r\" ) ; if ( l_csr_file_handle == NULL ) { fprintf ( stderr , \"cannot<S2SV_blank>open<S2SV_blank>CSR<S2SV_blank>file!\\\\n\" ) ; return - 1 ; } while ( fgets ( l_line , l_line_length , l_csr_file_handle ) != NULL ) { if ( strlen ( l_line ) == l_line_length ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>read<S2SV_blank>file<S2SV_blank>length!\\\\n\" ) ; return - 1 ; } if ( l_line [ 0 ] == '%' ) { continue ; } else { if ( l_header_read == 0 ) { <S2SV_StartBug> if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%u\" , o_row_count , o_column_count , o_element_count ) == 3 ) { <S2SV_EndBug> * o_column_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_element_count ) ) ; * o_row_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_row_count + 1 ) ) ; * o_values = ( REALTYPE * ) malloc ( sizeof ( double ) * ( * o_element_count ) ) ; l_row_idx_id = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_row_count ) ) ; if ( ( * o_row_idx == NULL ) || ( * o_column_idx == NULL ) || ( * o_values == NULL ) || ( l_row_idx_id == NULL ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>sp<S2SV_blank>data!\\\\n\" ) ; return - 1 ; } memset ( * o_row_idx , 0 , sizeof ( unsigned int ) * ( * o_row_count + 1 ) ) ; memset ( * o_column_idx , 0 , sizeof ( unsigned int ) * ( * o_element_count ) ) ; memset ( * o_values , 0 , sizeof ( double ) * ( * o_element_count ) ) ; memset ( l_row_idx_id , 0 , sizeof ( unsigned int ) * ( * o_row_count ) ) ; for ( l_i = 0 ; l_i < ( * o_row_count + 1 ) ; l_i ++ ) ( * o_row_idx ) [ l_i ] = ( * o_element_count ) ; ( * o_row_idx ) [ 0 ] = 0 ; l_i = 0 ; l_header_read = 1 ; } else { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>csr<S2SV_blank>description!\\\\n\" ) ; return - 1 ; } } else { unsigned int l_row , l_column ; REALTYPE l_value ; if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%lf\" , & l_row , & l_column , & l_value ) != 3 ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>read<S2SV_blank>element!\\\\n\" ) ; return - 1 ; } l_row -- ; l_column -- ; ( * o_column_idx ) [ l_i ] = l_column ; ( * o_values ) [ l_i ] = l_value ; l_i ++ ; l_row_idx_id [ l_row ] = 1 ; ( * o_row_idx ) [ l_row + 1 ] = l_i ; } } } fclose ( l_csr_file_handle ) ; if ( l_i != ( * o_element_count ) ) { fprintf ( stderr , \"we<S2SV_blank>were<S2SV_blank>not<S2SV_blank>able<S2SV_blank>to<S2SV_blank>read<S2SV_blank>all<S2SV_blank>elements!\\\\n\" ) ; return - 1 ; } for ( l_i = 0 ; l_i < ( * o_row_count ) ; l_i ++ ) { if ( l_row_idx_id [ l_i ] == 0 ) { ( * o_row_idx ) [ l_i + 1 ] = ( * o_row_idx ) [ l_i ] ; } } if ( l_row_idx_id != NULL ) { free ( l_row_idx_id ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( 3 == <S2SV_ModStart> , o_element_count ) && 0 != * o_row_count && 0 != * o_column_count && 0 != * o_element_count ) <S2SV_ModEnd> { * o_column_idx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6850\n\n```\nCWE-476 int jp2_box_put ( jp2_box_t * box , jas_stream_t * out ) { jas_stream_t * tmpstream ; bool extlen ; bool dataflag ; tmpstream = 0 ; dataflag = ! ( box -> info -> flags & ( JP2_BOX_SUPER | JP2_BOX_NODATA ) ) ; if ( dataflag ) { if ( ! ( tmpstream = jas_stream_memopen ( 0 , 0 ) ) ) { goto error ; } if ( box -> ops -> putdata ) { if ( ( * box -> ops -> putdata ) ( box , tmpstream ) ) { goto error ; } } box -> len = jas_stream_tell ( tmpstream ) + JP2_BOX_HDRLEN ( false ) ; jas_stream_rewind ( tmpstream ) ; } extlen = ( box -> len >= ( ( ( uint_fast64_t ) 1 ) << 32 ) ) != 0 ; if ( jp2_putuint32 ( out , extlen ? 1 : box -> len ) ) { goto error ; } if ( jp2_putuint32 ( out , box -> type ) ) { goto error ; } if ( extlen ) { if ( jp2_putuint64 ( out , box -> len ) ) { goto error ; } } if ( dataflag ) { <S2SV_StartBug> if ( jas_stream_copy ( out , tmpstream , box -> len - JP2_BOX_HDRLEN ( false ) ) ) { <S2SV_EndBug> goto error ; } jas_stream_close ( tmpstream ) ; } return 0 ; error : if ( tmpstream ) { jas_stream_close ( tmpstream ) ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { jas_eprintf ( \"cannot<S2SV_blank>copy<S2SV_blank>box<S2SV_blank>data\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7127\n\n```\nCWE-787 PHP_FUNCTION ( imagegammacorrect ) { zval * IM ; gdImagePtr im ; int i ; double input , output ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"rdd\" , & IM , & input , & output ) == FAILURE ) { return ; } <S2SV_StartBug> ZEND_FETCH_RESOURCE ( im , gdImagePtr , & IM , - 1 , \"Image\" , le_gd ) ; <S2SV_EndBug> if ( gdImageTrueColor ( im ) ) { int x , y , c ; for ( y = 0 ; y < gdImageSY ( im ) ; y ++ ) { for ( x = 0 ; x < gdImageSX ( im ) ; x ++ ) { c = gdImageGetPixel ( im , x , y ) ; gdImageSetPixel ( im , x , y , gdTrueColorAlpha ( ( int ) ( ( pow ( ( pow ( ( gdTrueColorGetRed ( c ) / 255.0 ) , input ) ) , 1.0 / output ) * 255 ) + .5 ) , ( int ) ( ( pow ( ( pow ( ( gdTrueColorGetGreen ( c ) / 255.0 ) , input ) ) , 1.0 / output ) * 255 ) + .5 ) , ( int ) ( ( pow ( ( pow ( ( gdTrueColorGetBlue ( c ) / 255.0 ) , input ) ) , 1.0 / output ) * 255 ) + .5 ) , gdTrueColorGetAlpha ( c ) ) ) ; } } RETURN_TRUE ; } for ( i = 0 ; i < gdImageColorsTotal ( im ) ; i ++ ) { im -> red [ i ] = ( int ) ( ( pow ( ( pow ( ( im -> red [ i ] / 255.0 ) , input ) ) , 1.0 / output ) * 255 ) + .5 ) ; im -> green [ i ] = ( int ) ( ( pow ( ( pow ( ( im -> green [ i ] / 255.0 ) , input ) ) , 1.0 / output ) * 255 ) + .5 ) ; im -> blue [ i ] = ( int ) ( ( pow ( ( pow ( ( im -> blue [ i ] / 255.0 ) , input ) ) , 1.0 / output ) * 255 ) + .5 ) ; } RETURN_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } if ( input <= 0.0 || output <= 0.0 ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Gamma<S2SV_blank>values<S2SV_blank>should<S2SV_blank>be<S2SV_blank>positive\" ) ; RETURN_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8dx_receive_compressed_data ( VP8D_COMP * pbi , size_t size , const uint8_t * source , int64_t time_stamp ) { <S2SV_StartBug> # if HAVE_NEON <S2SV_EndBug> int64_t dx_store_reg [ 8 ] ; # endif VP8_COMMON * cm = & pbi -> common ; int retcode = - 1 ; <S2SV_StartBug> pbi -> common . error . error_code = VPX_CODEC_OK ; <S2SV_EndBug> retcode = check_fragments_for_errors ( pbi ) ; if ( retcode <= 0 ) return retcode ; <S2SV_StartBug> # if HAVE_NEON <S2SV_EndBug> # if CONFIG_RUNTIME_CPU_DETECT if ( cm -> cpu_caps & HAS_NEON ) # endif { vp8_push_neon ( dx_store_reg ) ; } # endif cm -> new_fb_idx = get_free_fb ( cm ) ; pbi -> dec_fb_ref [ INTRA_FRAME ] = & cm -> yv12_fb [ cm -> new_fb_idx ] ; pbi -> dec_fb_ref [ LAST_FRAME ] = & cm -> yv12_fb [ cm -> lst_fb_idx ] ; pbi -> dec_fb_ref [ GOLDEN_FRAME ] = & cm -> yv12_fb [ cm -> gld_fb_idx ] ; pbi -> dec_fb_ref [ ALTREF_FRAME ] = & cm -> yv12_fb [ cm -> alt_fb_idx ] ; if ( setjmp ( pbi -> common . error . jmp ) ) { cm -> yv12_fb [ cm -> lst_fb_idx ] . corrupted = 1 ; if ( cm -> fb_idx_ref_cnt [ cm -> new_fb_idx ] > 0 ) cm -> fb_idx_ref_cnt [ cm -> new_fb_idx ] -- ; goto decode_exit ; } pbi -> common . error . setjmp = 1 ; retcode = vp8_decode_frame ( pbi ) ; if ( retcode < 0 ) { if ( cm -> fb_idx_ref_cnt [ cm -> new_fb_idx ] > 0 ) cm -> fb_idx_ref_cnt [ cm -> new_fb_idx ] -- ; pbi -> common . error . error_code = VPX_CODEC_ERROR ; goto decode_exit ; } if ( swap_frame_buffers ( cm ) ) { pbi -> common . error . error_code = VPX_CODEC_ERROR ; goto decode_exit ; } vp8_clear_system_state ( ) ; if ( cm -> show_frame ) { cm -> current_video_frame ++ ; cm -> show_frame_mi = cm -> mi ; } # if CONFIG_ERROR_CONCEALMENT if ( pbi -> ec_enabled && pbi -> common . prev_mi ) { MODE_INFO * tmp = pbi -> common . prev_mi ; int row , col ; pbi -> common . prev_mi = pbi -> common . mi ; pbi -> common . mi = tmp ; for ( row = 0 ; row < pbi -> common . mb_rows ; ++ row ) { for ( col = 0 ; col < pbi -> common . mb_cols ; ++ col ) { const int i = row * pbi -> common . mode_info_stride + col ; pbi -> common . mi [ i ] . mbmi . segment_id = pbi -> common . prev_mi [ i ] . mbmi . segment_id ; } } } # endif pbi -> ready_for_new_data = 0 ; pbi -> last_time_stamp = time_stamp ; decode_exit : <S2SV_StartBug> # if HAVE_NEON <S2SV_EndBug> # if CONFIG_RUNTIME_CPU_DETECT if ( cm -> cpu_caps & HAS_NEON ) # endif { vp8_pop_neon ( dx_store_reg ) ; } # endif pbi -> common . error . setjmp = 0 ; <S2SV_StartBug> return retcode ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> time_stamp ) { <S2SV_ModEnd> VP8_COMMON * cm <S2SV_ModStart> - 1 ; ( void ) size ; ( void ) source ; <S2SV_ModStart> return retcode ; <S2SV_ModEnd> cm -> new_fb_idx <S2SV_ModStart> ; decode_exit : <S2SV_ModEnd> pbi -> common <S2SV_ModStart> = 0 ; vp8_clear_system_state ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 int ext4_insert_range ( struct inode * inode , loff_t offset , loff_t len ) { struct super_block * sb = inode -> i_sb ; handle_t * handle ; struct ext4_ext_path * path ; struct ext4_extent * extent ; ext4_lblk_t offset_lblk , len_lblk , ee_start_lblk = 0 ; unsigned int credits , ee_len ; int ret = 0 , depth , split_flag = 0 ; loff_t ioffset ; if ( ! ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) return - EOPNOTSUPP ; if ( offset & ( EXT4_CLUSTER_SIZE ( sb ) - 1 ) || len & ( EXT4_CLUSTER_SIZE ( sb ) - 1 ) ) return - EINVAL ; if ( ! S_ISREG ( inode -> i_mode ) ) return - EOPNOTSUPP ; trace_ext4_insert_range ( inode , offset , len ) ; offset_lblk = offset >> EXT4_BLOCK_SIZE_BITS ( sb ) ; len_lblk = len >> EXT4_BLOCK_SIZE_BITS ( sb ) ; if ( ext4_should_journal_data ( inode ) ) { ret = ext4_force_commit ( inode -> i_sb ) ; if ( ret ) return ret ; } ioffset = round_down ( offset , PAGE_SIZE ) ; ret = filemap_write_and_wait_range ( inode -> i_mapping , ioffset , LLONG_MAX ) ; if ( ret ) return ret ; mutex_lock ( & inode -> i_mutex ) ; if ( ! ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) { ret = - EOPNOTSUPP ; goto out_mutex ; } if ( inode -> i_size + len > inode -> i_sb -> s_maxbytes ) { ret = - EFBIG ; goto out_mutex ; } if ( offset >= i_size_read ( inode ) ) { ret = - EINVAL ; goto out_mutex ; } <S2SV_StartBug> truncate_pagecache ( inode , ioffset ) ; <S2SV_EndBug> <S2SV_StartBug> ext4_inode_block_unlocked_dio ( inode ) ; <S2SV_EndBug> inode_dio_wait ( inode ) ; credits = ext4_writepage_trans_blocks ( inode ) ; handle = ext4_journal_start ( inode , EXT4_HT_TRUNCATE , credits ) ; if ( IS_ERR ( handle ) ) { ret = PTR_ERR ( handle ) ; <S2SV_StartBug> goto out_dio ; <S2SV_EndBug> } inode -> i_size += len ; EXT4_I ( inode ) -> i_disksize += len ; inode -> i_mtime = inode -> i_ctime = ext4_current_time ( inode ) ; ret = ext4_mark_inode_dirty ( handle , inode ) ; if ( ret ) goto out_stop ; down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; ext4_discard_preallocations ( inode ) ; path = ext4_find_extent ( inode , offset_lblk , NULL , 0 ) ; if ( IS_ERR ( path ) ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } depth = ext_depth ( inode ) ; extent = path [ depth ] . p_ext ; if ( extent ) { ee_start_lblk = le32_to_cpu ( extent -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( extent ) ; if ( ( offset_lblk > ee_start_lblk ) && ( offset_lblk < ( ee_start_lblk + ee_len ) ) ) { if ( ext4_ext_is_unwritten ( extent ) ) split_flag = EXT4_EXT_MARK_UNWRIT1 | EXT4_EXT_MARK_UNWRIT2 ; ret = ext4_split_extent_at ( handle , inode , & path , offset_lblk , split_flag , EXT4_EX_NOCACHE | EXT4_GET_BLOCKS_PRE_IO | EXT4_GET_BLOCKS_METADATA_NOFAIL ) ; } ext4_ext_drop_refs ( path ) ; kfree ( path ) ; if ( ret < 0 ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } } ret = ext4_es_remove_extent ( inode , offset_lblk , EXT_MAX_BLOCKS - offset_lblk ) ; if ( ret ) { up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; goto out_stop ; } ret = ext4_ext_shift_extents ( inode , handle , ee_start_lblk > offset_lblk ? ee_start_lblk : offset_lblk , len_lblk , SHIFT_RIGHT ) ; up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; if ( IS_SYNC ( inode ) ) ext4_handle_sync ( handle ) ; out_stop : ext4_journal_stop ( handle ) ; <S2SV_StartBug> out_dio : <S2SV_EndBug> ext4_inode_resume_unlocked_dio ( inode ) ; out_mutex : mutex_unlock ( & inode -> i_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out_mutex ; } ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> ioffset ) ; <S2SV_ModEnd> credits = ext4_writepage_trans_blocks <S2SV_ModStart> ) ; goto out_mmap <S2SV_ModEnd> ; } inode <S2SV_ModStart> handle ) ; out_mmap : up_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModEnd> ext4_inode_resume_unlocked_dio ( inode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-755(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11472\n\n```\nCWE-755 void AcpiNsTerminate ( void ) { ACPI_STATUS Status ; <S2SV_StartBug> ACPI_FUNCTION_TRACE ( NsTerminate ) ; <S2SV_EndBug> # ifdef ACPI_EXEC_APP { ACPI_OPERAND_OBJECT * Prev ; <S2SV_StartBug> ACPI_OPERAND_OBJECT * Next ; <S2SV_EndBug> Next = AcpiGbl_ModuleCodeList ; while ( Next ) { Prev = Next ; Next = Next -> Method . Mutex ; Prev -> Method . Mutex = NULL ; AcpiUtRemoveReference ( Prev ) ; } <S2SV_StartBug> } <S2SV_EndBug> # endif AcpiNsDeleteNamespaceSubtree ( AcpiGbl_RootNode ) ; Status = AcpiUtAcquireMutex ( ACPI_MTX_NAMESPACE ) ; if ( ACPI_FAILURE ( Status ) ) { return_VOID ; } AcpiNsDeleteNode ( AcpiGbl_RootNode ) ; ( void ) AcpiUtReleaseMutex ( ACPI_MTX_NAMESPACE ) ; ACPI_DEBUG_PRINT ( ( ACPI_DB_INFO , \"Namespace<S2SV_blank>freed\\\\n\" ) ) ; return_VOID ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ACPI_STATUS Status ; <S2SV_ModEnd> ACPI_OPERAND_OBJECT * Prev <S2SV_ModStart> ACPI_OPERAND_OBJECT * Next ; ACPI_FUNCTION_TRACE ( NsTerminate ) <S2SV_ModStart> ) ; } <S2SV_ModEnd> AcpiNsDeleteNamespaceSubtree ( AcpiGbl_RootNode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_withitem ( void * _o ) { withitem_ty o = ( withitem_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } result = PyType_GenericNew ( withitem_type , NULL , NULL ) ; if ( ! result ) return NULL ; value = ast2obj_expr ( o -> context_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_context_expr , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> optional_vars ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_optional_vars , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } result\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18604\n\n```\nCWE-20 void LineTo ( double x1 , double y1 ) { <S2SV_StartBug> outpos += <S2SV_EndBug> sprintf ( outpos , \"\\\\n<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>l\" , x1 , y1 ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> y1 ) { sprintf ( outputbuffer <S2SV_ModEnd> , \"\\\\n<S2SV_blank>%12.3f<S2SV_blank>%12.3f<S2SV_blank>l\" , <S2SV_ModStart> y1 ) ; sendClean ( outputbuffer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t dm9000UpdateMacAddrFilter ( NetInterface * interface ) { uint_t i ; uint_t k ; uint32_t crc ; uint8_t hashTable [ 8 ] ; MacFilterEntry * entry ; TRACE_DEBUG ( \"Updating<S2SV_blank>MAC<S2SV_blank>filter...\\\\r\\\\n\" ) ; osMemset ( hashTable , 0 , sizeof ( hashTable ) ) ; hashTable [ 7 ] = 0x80 ; for ( i = 0 ; i < MAC_ADDR_FILTER_SIZE ; i ++ ) { entry = & interface -> macAddrFilter [ i ] ; if ( entry -> refCount > 0 ) { crc = dm9000CalcCrc ( & entry -> addr , sizeof ( MacAddr ) ) ; k = crc & 0x3F ; hashTable [ k / 8 ] |= ( 1 << ( k % 8 ) ) ; } } for ( i = 0 ; i < 8 ; i ++ ) { <S2SV_StartBug> dm9000WriteReg ( DM9000_REG_MAR0 + i , hashTable [ i ] ) ; <S2SV_EndBug> } TRACE_DEBUG ( \"<S2SV_blank><S2SV_blank>MAR<S2SV_blank>=<S2SV_blank>%02\" PRIX8 \"<S2SV_blank>%02\" PRIX8 \"<S2SV_blank>%02\" PRIX8 \"<S2SV_blank>%02\" PRIX8 \"<S2SV_blank>\" \"%02\" PRIX8 \"<S2SV_blank>%02\" PRIX8 \"<S2SV_blank>%02\" PRIX8 \"<S2SV_blank>%02\" PRIX8 \"\\\\r\\\\n\" , <S2SV_StartBug> dm9000ReadReg ( DM9000_REG_MAR0 ) , dm9000ReadReg ( DM9000_REG_MAR1 ) , <S2SV_EndBug> dm9000ReadReg ( DM9000_REG_MAR2 ) , dm9000ReadReg ( DM9000_REG_MAR3 ) , dm9000ReadReg ( DM9000_REG_MAR4 ) , dm9000ReadReg ( DM9000_REG_MAR5 ) , dm9000ReadReg ( DM9000_REG_MAR6 ) , dm9000ReadReg ( DM9000_REG_MAR7 ) ) ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { dm9000WriteReg ( DM9000_MAR0 <S2SV_ModEnd> + i , <S2SV_ModStart> , dm9000ReadReg ( DM9000_MAR0 ) , dm9000ReadReg ( DM9000_MAR1 ) , dm9000ReadReg ( DM9000_MAR2 ) , dm9000ReadReg ( DM9000_MAR3 ) , dm9000ReadReg ( DM9000_MAR4 ) , dm9000ReadReg ( DM9000_MAR5 ) , dm9000ReadReg ( DM9000_MAR6 ) , dm9000ReadReg ( DM9000_MAR7 <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0274\n\n```\nCWE-19 STATIC int xfs_attr_leaf_addname ( xfs_da_args_t * args ) { xfs_inode_t * dp ; struct xfs_buf * bp ; int retval , error , committed , forkoff ; trace_xfs_attr_leaf_addname ( args ) ; dp = args -> dp ; args -> blkno = 0 ; error = xfs_attr3_leaf_read ( args -> trans , args -> dp , args -> blkno , - 1 , & bp ) ; if ( error ) return error ; retval = xfs_attr3_leaf_lookup_int ( bp , args ) ; if ( ( args -> flags & ATTR_REPLACE ) && ( retval == ENOATTR ) ) { xfs_trans_brelse ( args -> trans , bp ) ; return retval ; } else if ( retval == EEXIST ) { if ( args -> flags & ATTR_CREATE ) { xfs_trans_brelse ( args -> trans , bp ) ; return retval ; } trace_xfs_attr_leaf_replace ( args ) ; args -> op_flags |= XFS_DA_OP_RENAME ; args -> blkno2 = args -> blkno ; args -> index2 = args -> index ; args -> rmtblkno2 = args -> rmtblkno ; args -> rmtblkcnt2 = args -> rmtblkcnt ; <S2SV_StartBug> } <S2SV_EndBug> retval = xfs_attr3_leaf_add ( bp , args ) ; if ( retval == ENOSPC ) { xfs_bmap_init ( args -> flist , args -> firstblock ) ; error = xfs_attr3_leaf_to_node ( args ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; return ( error ) ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) return ( error ) ; error = xfs_attr_node_addname ( args ) ; return ( error ) ; } error = xfs_trans_roll ( & args -> trans , dp ) ; if ( error ) return ( error ) ; if ( args -> rmtblkno > 0 ) { error = xfs_attr_rmtval_set ( args ) ; if ( error ) return ( error ) ; } if ( args -> op_flags & XFS_DA_OP_RENAME ) { error = xfs_attr3_leaf_flipflags ( args ) ; if ( error ) return ( error ) ; args -> index = args -> index2 ; args -> blkno = args -> blkno2 ; args -> rmtblkno = args -> rmtblkno2 ; args -> rmtblkcnt = args -> rmtblkcnt2 ; <S2SV_StartBug> if ( args -> rmtblkno ) { <S2SV_EndBug> error = xfs_attr_rmtval_remove ( args ) ; if ( error ) return ( error ) ; } error = xfs_attr3_leaf_read ( args -> trans , args -> dp , args -> blkno , - 1 , & bp ) ; if ( error ) return error ; xfs_attr3_leaf_remove ( bp , args ) ; if ( ( forkoff = xfs_attr_shortform_allfit ( bp , dp ) ) ) { xfs_bmap_init ( args -> flist , args -> firstblock ) ; error = xfs_attr3_leaf_to_shortform ( bp , args , forkoff ) ; if ( ! error ) { error = xfs_bmap_finish ( & args -> trans , args -> flist , & committed ) ; } if ( error ) { ASSERT ( committed ) ; args -> trans = NULL ; xfs_bmap_cancel ( args -> flist ) ; return ( error ) ; } if ( committed ) xfs_trans_ijoin ( args -> trans , dp , 0 ) ; } error = xfs_trans_roll ( & args -> trans , dp ) ; } else if ( args -> rmtblkno > 0 ) { error = xfs_attr3_leaf_clearflag ( args ) ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rmtblkcnt ; args -> rmtvaluelen2 = args -> rmtvaluelen ; args -> rmtblkno = 0 ; args -> rmtblkcnt = 0 ; args -> rmtvaluelen = 0 ; <S2SV_ModStart> -> rmtblkcnt2 ; args -> rmtvaluelen = args -> rmtvaluelen2 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12902\n\n```\nCWE-125 static const char * <S2SV_StartBug> parse_field ( netdissect_options * ndo , const char * * pptr , int * len ) <S2SV_EndBug> { const char * s ; <S2SV_StartBug> if ( * len <= 0 || ! pptr || ! * pptr ) <S2SV_EndBug> return NULL ; if ( * pptr > ( const char * ) ndo -> ndo_snapend ) return NULL ; s = * pptr ; <S2SV_StartBug> while ( * pptr <= ( const char * ) ndo -> ndo_snapend && * len >= 0 && * * pptr ) { <S2SV_EndBug> ( * pptr ) ++ ; ( * len ) -- ; } ( * pptr ) ++ ; ( * len ) -- ; <S2SV_StartBug> if ( * len < 0 || * pptr > ( const char * ) ndo -> ndo_snapend ) <S2SV_EndBug> return NULL ; return s ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int * len , int * truncated <S2SV_ModStart> * s ; <S2SV_ModEnd> s = * <S2SV_ModStart> * pptr ; for ( ; ; ) { if ( * len == 0 ) { return NULL ; } if ( ! ND_TTEST ( <S2SV_ModEnd> * * pptr <S2SV_ModStart> * pptr ) ) { * truncated = 1 ; return NULL ; } if ( * * pptr == '\\\\0' ) { break ; } <S2SV_ModEnd> ( * pptr <S2SV_ModStart> ) -- ; <S2SV_ModEnd> return s ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010293\n\n```\nCWE-20 TEE_Result tee_mmu_check_access_rights ( const struct user_ta_ctx * utc , uint32_t flags , uaddr_t uaddr , size_t len ) { uaddr_t a ; <S2SV_StartBug> size_t addr_incr = MIN ( CORE_MMU_USER_CODE_SIZE , <S2SV_EndBug> CORE_MMU_USER_PARAM_SIZE ) ; <S2SV_StartBug> if ( ADD_OVERFLOW ( uaddr , len , & a ) ) <S2SV_EndBug> return TEE_ERROR_ACCESS_DENIED ; if ( ( flags & TEE_MEMORY_ACCESS_NONSECURE ) && ( flags & TEE_MEMORY_ACCESS_SECURE ) ) return TEE_ERROR_ACCESS_DENIED ; if ( ! ( flags & TEE_MEMORY_ACCESS_ANY_OWNER ) && ! tee_mmu_is_vbuf_inside_ta_private ( utc , ( void * ) uaddr , len ) ) return TEE_ERROR_ACCESS_DENIED ; <S2SV_StartBug> for ( a = uaddr ; a < ( uaddr + len ) ; a += addr_incr ) { <S2SV_EndBug> uint32_t attr ; TEE_Result res ; res = tee_mmu_user_va2pa_attr ( utc , ( void * ) a , NULL , & attr ) ; if ( res != TEE_SUCCESS ) return res ; if ( ( flags & TEE_MEMORY_ACCESS_NONSECURE ) && ( attr & TEE_MATTR_SECURE ) ) return TEE_ERROR_ACCESS_DENIED ; if ( ( flags & TEE_MEMORY_ACCESS_SECURE ) && ! ( attr & TEE_MATTR_SECURE ) ) return TEE_ERROR_ACCESS_DENIED ; if ( ( flags & TEE_MEMORY_ACCESS_WRITE ) && ! ( attr & TEE_MATTR_UW ) ) return TEE_ERROR_ACCESS_DENIED ; if ( ( flags & TEE_MEMORY_ACCESS_READ ) && ! ( attr & TEE_MATTR_UR ) ) return TEE_ERROR_ACCESS_DENIED ; } return TEE_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uaddr_t a ; uaddr_t end_addr = 0 ; <S2SV_ModStart> len , & end_addr <S2SV_ModEnd> ) ) return <S2SV_ModStart> ( a = ROUNDDOWN ( uaddr , addr_incr ) <S2SV_ModEnd> ; a < <S2SV_ModStart> ; a < end_addr <S2SV_ModEnd> ; a +=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3916\n\n```\nCWE-119 int validate_camera_metadata_structure ( const camera_metadata_t * metadata , const size_t * expected_size ) { if ( metadata == NULL ) { ALOGE ( \"%s:<S2SV_blank>metadata<S2SV_blank>is<S2SV_blank>null!\" , __FUNCTION__ ) ; return ERROR ; } { static const struct { const char * name ; size_t alignment ; } alignments [ ] = { { . name = \"camera_metadata\" , . alignment = METADATA_ALIGNMENT } , { . name = \"camera_metadata_buffer_entry\" , . alignment = ENTRY_ALIGNMENT } , { . name = \"camera_metadata_data\" , . alignment = DATA_ALIGNMENT } , } ; for ( size_t i = 0 ; i < sizeof ( alignments ) / sizeof ( alignments [ 0 ] ) ; ++ i ) { uintptr_t aligned_ptr = ALIGN_TO ( metadata , alignments [ i ] . alignment ) ; if ( ( uintptr_t ) metadata != aligned_ptr ) { ALOGE ( \"%s:<S2SV_blank>Metadata<S2SV_blank>pointer<S2SV_blank>is<S2SV_blank>not<S2SV_blank>aligned<S2SV_blank>(actual<S2SV_blank>%p,<S2SV_blank>\" \"expected<S2SV_blank>%p)<S2SV_blank>to<S2SV_blank>type<S2SV_blank>%s\" , __FUNCTION__ , metadata , ( void * ) aligned_ptr , alignments [ i ] . name ) ; return ERROR ; } } } if ( expected_size != NULL && metadata -> size > * expected_size ) { ALOGE ( \"%s:<S2SV_blank>Metadata<S2SV_blank>size<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>expected<S2SV_blank>size<S2SV_blank>(%zu)\" , __FUNCTION__ , metadata -> size , * expected_size ) ; return ERROR ; } if ( metadata -> entry_count > metadata -> entry_capacity ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>count<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>entry<S2SV_blank>capacity<S2SV_blank>\" \"(%\" PRIu32 \")\" , __FUNCTION__ , metadata -> entry_count , metadata -> entry_capacity ) ; return ERROR ; } const metadata_uptrdiff_t entries_end = metadata -> entries_start + metadata -> entry_capacity ; if ( entries_end < metadata -> entries_start || entries_end > metadata -> data_start ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>start<S2SV_blank>+<S2SV_blank>capacity<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>data<S2SV_blank>start<S2SV_blank>\" \"(%\" PRIu32 \")\" , __FUNCTION__ , ( metadata -> entries_start + metadata -> entry_capacity ) , metadata -> data_start ) ; return ERROR ; } const metadata_uptrdiff_t data_end = metadata -> data_start + metadata -> data_capacity ; if ( data_end < metadata -> data_start || data_end > metadata -> size ) { ALOGE ( \"%s:<S2SV_blank>Data<S2SV_blank>start<S2SV_blank>+<S2SV_blank>capacity<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>total<S2SV_blank>size<S2SV_blank>\" \"(%\" PRIu32 \")\" , __FUNCTION__ , ( metadata -> data_start + metadata -> data_capacity ) , metadata -> size ) ; return ERROR ; } const metadata_size_t entry_count = metadata -> entry_count ; camera_metadata_buffer_entry_t * entries = get_entries ( metadata ) ; for ( size_t i = 0 ; i < entry_count ; ++ i ) { if ( ( uintptr_t ) & entries [ i ] != ALIGN_TO ( & entries [ i ] , ENTRY_ALIGNMENT ) ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>bad<S2SV_blank>alignment<S2SV_blank>(address<S2SV_blank>%p),\" \"<S2SV_blank>expected<S2SV_blank>alignment<S2SV_blank>%zu\" , __FUNCTION__ , i , & entries [ i ] , ENTRY_ALIGNMENT ) ; return ERROR ; } camera_metadata_buffer_entry_t entry = entries [ i ] ; if ( entry . type >= NUM_TYPES ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>a<S2SV_blank>bad<S2SV_blank>type<S2SV_blank>%d\" , __FUNCTION__ , i , entry . type ) ; return ERROR ; } uint32_t tag_section = entry . tag >> 16 ; int tag_type = get_camera_metadata_tag_type ( entry . tag ) ; if ( tag_type != ( int ) entry . type && tag_section < VENDOR_SECTION ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>tag<S2SV_blank>type<S2SV_blank>%d,<S2SV_blank>but<S2SV_blank>the<S2SV_blank>type<S2SV_blank>was<S2SV_blank>%d\" , __FUNCTION__ , i , tag_type , entry . type ) ; return ERROR ; } <S2SV_StartBug> size_t data_size = <S2SV_EndBug> calculate_camera_metadata_entry_data_size ( entry . type , <S2SV_StartBug> entry . count ) ; <S2SV_EndBug> if ( data_size != 0 ) { camera_metadata_data_t * data = ( camera_metadata_data_t * ) ( get_data ( metadata ) + entry . data . offset ) ; if ( ( uintptr_t ) data != ALIGN_TO ( data , DATA_ALIGNMENT ) ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>bad<S2SV_blank>data<S2SV_blank>alignment<S2SV_blank>(address<S2SV_blank>%p),\" \"<S2SV_blank>expected<S2SV_blank>align<S2SV_blank>%zu,<S2SV_blank>(tag<S2SV_blank>name<S2SV_blank>%s,<S2SV_blank>data<S2SV_blank>size<S2SV_blank>%zu)\" , __FUNCTION__ , i , data , DATA_ALIGNMENT , get_camera_metadata_tag_name ( entry . tag ) ? : \"unknown\" , data_size ) ; return ERROR ; } size_t data_entry_end = entry . data . offset + data_size ; if ( data_entry_end < entry . data . offset || data_entry_end > metadata -> data_capacity ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>data<S2SV_blank>ends<S2SV_blank>(%zu)<S2SV_blank>beyond<S2SV_blank>the<S2SV_blank>capacity<S2SV_blank>\" \"%\" PRIu32 , __FUNCTION__ , i , data_entry_end , metadata -> data_capacity ) ; return ERROR ; } } else if ( entry . count == 0 ) { if ( entry . data . offset != 0 ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>0<S2SV_blank>items,<S2SV_blank>but<S2SV_blank>offset<S2SV_blank>was<S2SV_blank>non-0<S2SV_blank>\" \"(%\" PRIu32 \"),<S2SV_blank>tag<S2SV_blank>name:<S2SV_blank>%s\" , __FUNCTION__ , i , entry . data . offset , get_camera_metadata_tag_name ( entry . tag ) ? : \"unknown\" ) ; return ERROR ; } } } return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } size_t data_size ; if ( validate_and_calculate_camera_metadata_entry_data_size ( & data_size , <S2SV_ModEnd> entry . type <S2SV_ModStart> . count ) != OK ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>data<S2SV_blank>size<S2SV_blank>is<S2SV_blank>invalid.<S2SV_blank>type:<S2SV_blank>%u<S2SV_blank>count:<S2SV_blank>%u\" , __FUNCTION__ , entry . type , entry . count ) ; return ERROR ; } <S2SV_ModEnd> if ( data_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13049\n\n```\nCWE-125 static void ubik_print ( netdissect_options * ndo , register const u_char * bp ) { int ubik_op ; int32_t temp ; ubik_op = EXTRACT_32BITS ( bp + sizeof ( struct rx_header ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>ubik<S2SV_blank>call<S2SV_blank>%s\" , tok2str ( ubik_req , \"op#%d\" , ubik_op ) ) ) ; bp += sizeof ( struct rx_header ) + 4 ; switch ( ubik_op ) { case 10000 : ND_TCHECK2 ( bp [ 0 ] , 4 ) ; temp = EXTRACT_32BITS ( bp ) ; bp += sizeof ( int32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>syncsite<S2SV_blank>%s\" , temp ? \"yes\" : \"no\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>votestart\" ) ) ; DATEOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>dbversion\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; break ; case 10003 : ND_PRINT ( ( ndo , \"<S2SV_blank>site\" ) ) ; UINTOUT ( ) ; break ; case 20000 : case 20001 : case 20007 : case 20008 : case 20010 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; break ; case 20002 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pos\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>length\" ) ) ; INTOUT ( ) ; <S2SV_StartBug> temp = EXTRACT_32BITS ( bp ) ; <S2SV_EndBug> bp += sizeof ( int32_t ) ; tok2str ( ubik_lock_types , \"type<S2SV_blank>%d\" , temp ) ; break ; case 20003 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>pos\" ) ) ; INTOUT ( ) ; break ; case 20005 : ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; break ; case 20006 : ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>length\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>dbversion\" ) ) ; UBIK_VERSIONOUT ( ) ; break ; case 20009 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>file\" ) ) ; INTOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>length\" ) ) ; INTOUT ( ) ; break ; case 20012 : ND_PRINT ( ( ndo , \"<S2SV_blank>tid\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>oldversion\" ) ) ; UBIK_VERSIONOUT ( ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>newversion\" ) ) ; UBIK_VERSIONOUT ( ) ; break ; default : ; } return ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|ubik]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; ND_TCHECK_32BITS ( bp ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-1571\n\n```\nCWE-119 int cdf_read_property_info ( const cdf_stream_t * sst , const cdf_header_t * h , uint32_t offs , cdf_property_info_t * * info , size_t * count , size_t * maxcount ) { const cdf_section_header_t * shp ; cdf_section_header_t sh ; const uint8_t * p , * q , * e ; int16_t s16 ; int32_t s32 ; uint32_t u32 ; int64_t s64 ; uint64_t u64 ; cdf_timestamp_t tp ; size_t i , o , o4 , nelements , j ; cdf_property_info_t * inp ; if ( offs > UINT32_MAX / 4 ) { errno = EFTYPE ; goto out ; } shp = CAST ( const cdf_section_header_t * , ( const void * ) ( ( const char * ) sst -> sst_tab + offs ) ) ; if ( cdf_check_stream_offset ( sst , h , shp , sizeof ( * shp ) , __LINE__ ) == - 1 ) goto out ; sh . sh_len = CDF_TOLE4 ( shp -> sh_len ) ; # define CDF_SHLEN_LIMIT ( UINT32_MAX / 8 ) if ( sh . sh_len > CDF_SHLEN_LIMIT ) { errno = EFTYPE ; goto out ; } sh . sh_properties = CDF_TOLE4 ( shp -> sh_properties ) ; # define CDF_PROP_LIMIT ( UINT32_MAX / ( 4 * sizeof ( * inp ) ) ) if ( sh . sh_properties > CDF_PROP_LIMIT ) goto out ; DPRINTF ( ( \"section<S2SV_blank>len:<S2SV_blank>%u<S2SV_blank>properties<S2SV_blank>%u\\\\n\" , sh . sh_len , sh . sh_properties ) ) ; if ( * maxcount ) { if ( * maxcount > CDF_PROP_LIMIT ) goto out ; * maxcount += sh . sh_properties ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; } else { * maxcount = sh . sh_properties ; inp = CAST ( cdf_property_info_t * , malloc ( * maxcount * sizeof ( * inp ) ) ) ; } if ( inp == NULL ) goto out ; * info = inp ; inp += * count ; * count += sh . sh_properties ; p = CAST ( const uint8_t * , ( const void * ) ( ( const char * ) ( const void * ) sst -> sst_tab + offs + sizeof ( sh ) ) ) ; e = CAST ( const uint8_t * , ( const void * ) ( ( ( const char * ) ( const void * ) shp ) + sh . sh_len ) ) ; if ( cdf_check_stream_offset ( sst , h , e , 0 , __LINE__ ) == - 1 ) goto out ; for ( i = 0 ; i < sh . sh_properties ; i ++ ) { <S2SV_StartBug> q = ( const uint8_t * ) ( const void * ) <S2SV_EndBug> ( ( const char * ) ( const void * ) p + <S2SV_StartBug> CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ) - 2 * sizeof ( uint32_t ) ; <S2SV_EndBug> if ( q > e ) { DPRINTF ( ( \"Ran<S2SV_blank>of<S2SV_blank>the<S2SV_blank>end<S2SV_blank>%p<S2SV_blank>><S2SV_blank>%p\\\\n\" , q , e ) ) ; goto out ; } inp [ i ] . pi_id = CDF_GETUINT32 ( p , i << 1 ) ; inp [ i ] . pi_type = CDF_GETUINT32 ( q , 0 ) ; <S2SV_StartBug> DPRINTF ( ( \"%\" SIZE_T_FORMAT \"u)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=0x%tx,0x%x\\\\n\" , i , <S2SV_EndBug> inp [ i ] . pi_id , inp [ i ] . pi_type , q - p , <S2SV_StartBug> CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ) ) ; <S2SV_EndBug> if ( inp [ i ] . pi_type & CDF_VECTOR ) { nelements = CDF_GETUINT32 ( q , 1 ) ; o = 2 ; } else { nelements = 1 ; o = 1 ; } o4 = o * sizeof ( uint32_t ) ; if ( inp [ i ] . pi_type & ( CDF_ARRAY | CDF_BYREF | CDF_RESERVED ) ) goto unknown ; switch ( inp [ i ] . pi_type & CDF_TYPEMASK ) { case CDF_NULL : case CDF_EMPTY : break ; case CDF_SIGNED16 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s16 , & q [ o4 ] , sizeof ( s16 ) ) ; inp [ i ] . pi_s16 = CDF_TOLE2 ( s16 ) ; break ; case CDF_SIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s32 , & q [ o4 ] , sizeof ( s32 ) ) ; inp [ i ] . pi_s32 = CDF_TOLE4 ( ( uint32_t ) s32 ) ; break ; case CDF_BOOL : case CDF_UNSIGNED32 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; inp [ i ] . pi_u32 = CDF_TOLE4 ( u32 ) ; break ; case CDF_SIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & s64 , & q [ o4 ] , sizeof ( s64 ) ) ; inp [ i ] . pi_s64 = CDF_TOLE8 ( ( uint64_t ) s64 ) ; break ; case CDF_UNSIGNED64 : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; inp [ i ] . pi_u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; break ; case CDF_FLOAT : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u32 , & q [ o4 ] , sizeof ( u32 ) ) ; u32 = CDF_TOLE4 ( u32 ) ; memcpy ( & inp [ i ] . pi_f , & u32 , sizeof ( inp [ i ] . pi_f ) ) ; break ; case CDF_DOUBLE : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & u64 , & q [ o4 ] , sizeof ( u64 ) ) ; u64 = CDF_TOLE8 ( ( uint64_t ) u64 ) ; memcpy ( & inp [ i ] . pi_d , & u64 , sizeof ( inp [ i ] . pi_d ) ) ; break ; case CDF_LENGTH32_STRING : case CDF_LENGTH32_WSTRING : if ( nelements > 1 ) { size_t nelem = inp - * info ; if ( * maxcount > CDF_PROP_LIMIT || nelements > CDF_PROP_LIMIT ) goto out ; * maxcount += nelements ; inp = CAST ( cdf_property_info_t * , realloc ( * info , * maxcount * sizeof ( * inp ) ) ) ; if ( inp == NULL ) goto out ; * info = inp ; inp = * info + nelem ; } DPRINTF ( ( \"nelements<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u\\\\n\" , nelements ) ) ; for ( j = 0 ; j < nelements ; j ++ , i ++ ) { uint32_t l = CDF_GETUINT32 ( q , o ) ; inp [ i ] . pi_str . s_len = l ; inp [ i ] . pi_str . s_buf = ( const char * ) ( const void * ) ( & q [ o4 + sizeof ( l ) ] ) ; DPRINTF ( ( \"l<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>r<S2SV_blank>=<S2SV_blank>%\" SIZE_T_FORMAT \"u,<S2SV_blank>s<S2SV_blank>=<S2SV_blank>%s\\\\n\" , l , CDF_ROUND ( l , sizeof ( l ) ) , inp [ i ] . pi_str . s_buf ) ) ; if ( l & 1 ) l ++ ; o += l >> 1 ; if ( q + o >= e ) goto out ; o4 = o * sizeof ( uint32_t ) ; } i -- ; break ; case CDF_FILETIME : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; ( void ) memcpy ( & tp , & q [ o4 ] , sizeof ( tp ) ) ; inp [ i ] . pi_tp = CDF_TOLE8 ( ( uint64_t ) tp ) ; break ; case CDF_CLIPBOARD : if ( inp [ i ] . pi_type & CDF_VECTOR ) goto unknown ; break ; default : unknown : DPRINTF ( ( \"Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>deal<S2SV_blank>with<S2SV_blank>%x\\\\n\" , inp [ i ] . pi_type ) ) ; break ; } } return 0 ; out : free ( * info ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { size_t ofs = CDF_GETUINT32 ( p , ( i << 1 ) + 1 ) ; <S2SV_ModStart> ) p + ofs <S2SV_ModEnd> - 2 * <S2SV_ModStart> sizeof ( uint32_t ) <S2SV_ModStart> SIZE_T_FORMAT \"u)<S2SV_blank>id=%x<S2SV_blank>type=%x<S2SV_blank>offs=0x%tx,0x%x\\\\n\" , i , <S2SV_ModEnd> inp [ i <S2SV_ModStart> - p , offs <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12135\n\n```\nCWE-190 <S2SV_StartBug> static char * mongo_data_append ( char * start , const void * data , int len ) { <S2SV_EndBug> memcpy ( start , data , len ) ; return start + len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * data , size_t <S2SV_ModEnd> len ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17052\n\n```\nCWE-416 static struct mm_struct * mm_init ( struct mm_struct * mm , struct task_struct * p , struct user_namespace * user_ns ) { mm -> mmap = NULL ; mm -> mm_rb = RB_ROOT ; mm -> vmacache_seqnum = 0 ; atomic_set ( & mm -> mm_users , 1 ) ; atomic_set ( & mm -> mm_count , 1 ) ; init_rwsem ( & mm -> mmap_sem ) ; INIT_LIST_HEAD ( & mm -> mmlist ) ; mm -> core_state = NULL ; atomic_long_set ( & mm -> nr_ptes , 0 ) ; mm_nr_pmds_init ( mm ) ; mm -> map_count = 0 ; mm -> locked_vm = 0 ; mm -> pinned_vm = 0 ; memset ( & mm -> rss_stat , 0 , sizeof ( mm -> rss_stat ) ) ; spin_lock_init ( & mm -> page_table_lock ) ; mm_init_cpumask ( mm ) ; mm_init_aio ( mm ) ; mm_init_owner ( mm , p ) ; <S2SV_StartBug> mmu_notifier_mm_init ( mm ) ; <S2SV_EndBug> init_tlb_flush_pending ( mm ) ; # if defined ( CONFIG_TRANSPARENT_HUGEPAGE ) && ! USE_SPLIT_PMD_PTLOCKS mm -> pmd_huge_pte = NULL ; # endif if ( current -> mm ) { mm -> flags = current -> mm -> flags & MMF_INIT_MASK ; mm -> def_flags = current -> mm -> def_flags & VM_INIT_DEF_MASK ; } else { mm -> flags = default_dump_filter ; mm -> def_flags = 0 ; } if ( mm_alloc_pgd ( mm ) ) goto fail_nopgd ; if ( init_new_context ( p , mm ) ) goto fail_nocontext ; mm -> user_ns = get_user_ns ( user_ns ) ; return mm ; fail_nocontext : mm_free_pgd ( mm ) ; fail_nopgd : free_mm ( mm ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p ) ; RCU_INIT_POINTER ( mm -> exe_file , NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1773\n\n```\nCWE-119 static int xlate_to_uni ( const unsigned char * name , int len , unsigned char * outname , int * longlen , int * outlen , int escape , int utf8 , struct nls_table * nls ) { const unsigned char * ip ; unsigned char nc ; unsigned char * op ; unsigned int ec ; int i , k , fill ; int charlen ; if ( utf8 ) { <S2SV_StartBug> * outlen = utf8s_to_utf16s ( name , len , ( wchar_t * ) outname ) ; <S2SV_EndBug> if ( * outlen < 0 ) return * outlen ; else if ( * outlen > FAT_LFN_LEN ) return - ENAMETOOLONG ; op = & outname [ * outlen * sizeof ( wchar_t ) ] ; } else { if ( nls ) { for ( i = 0 , ip = name , op = outname , * outlen = 0 ; i < len && * outlen <= FAT_LFN_LEN ; * outlen += 1 ) { if ( escape && ( * ip == ':' ) ) { if ( i > len - 5 ) return - EINVAL ; ec = 0 ; for ( k = 1 ; k < 5 ; k ++ ) { nc = ip [ k ] ; ec <<= 4 ; if ( nc >= '0' && nc <= '9' ) { ec |= nc - '0' ; continue ; } if ( nc >= 'a' && nc <= 'f' ) { ec |= nc - ( 'a' - 10 ) ; continue ; } if ( nc >= 'A' && nc <= 'F' ) { ec |= nc - ( 'A' - 10 ) ; continue ; } return - EINVAL ; } * op ++ = ec & 0xFF ; * op ++ = ec >> 8 ; ip += 5 ; i += 5 ; } else { if ( ( charlen = nls -> char2uni ( ip , len - i , ( wchar_t * ) op ) ) < 0 ) return - EINVAL ; ip += charlen ; i += charlen ; op += 2 ; } } if ( i < len ) return - ENAMETOOLONG ; } else { for ( i = 0 , ip = name , op = outname , * outlen = 0 ; i < len && * outlen <= FAT_LFN_LEN ; i ++ , * outlen += 1 ) { * op ++ = * ip ++ ; * op ++ = 0 ; } if ( i < len ) return - ENAMETOOLONG ; } } * longlen = * outlen ; if ( * outlen % 13 ) { * op ++ = 0 ; * op ++ = 0 ; * outlen += 1 ; if ( * outlen % 13 ) { fill = 13 - ( * outlen % 13 ) ; for ( i = 0 ; i < fill ; i ++ ) { * op ++ = 0xff ; * op ++ = 0xff ; } * outlen += fill ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , len , UTF16_HOST_ENDIAN , <S2SV_ModStart> * ) outname , FAT_LFN_LEN + 2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 SEL * selReadStream ( FILE * fp ) { char * selname ; <S2SV_StartBug> char linebuf [ L_BUF_SIZE ] ; <S2SV_EndBug> l_int32 sy , sx , cy , cx , i , j , version , ignore ; SEL * sel ; PROCNAME ( \"selReadStream\" ) ; if ( ! fp ) return ( SEL * ) ERROR_PTR ( \"stream<S2SV_blank>not<S2SV_blank>defined\" , procName , NULL ) ; if ( fscanf ( fp , \"<S2SV_blank><S2SV_blank>Sel<S2SV_blank>Version<S2SV_blank>%d\\\\n\" , & version ) != 1 ) return ( SEL * ) ERROR_PTR ( \"not<S2SV_blank>a<S2SV_blank>sel<S2SV_blank>file\" , procName , NULL ) ; if ( version != SEL_VERSION_NUMBER ) return ( SEL * ) ERROR_PTR ( \"invalid<S2SV_blank>sel<S2SV_blank>version\" , procName , NULL ) ; <S2SV_StartBug> if ( fgets ( linebuf , L_BUF_SIZE , fp ) == NULL ) <S2SV_EndBug> return ( SEL * ) ERROR_PTR ( \"error<S2SV_blank>reading<S2SV_blank>into<S2SV_blank>linebuf\" , procName , NULL ) ; selname = stringNew ( linebuf ) ; <S2SV_StartBug> sscanf ( linebuf , \"<S2SV_blank><S2SV_blank>------<S2SV_blank><S2SV_blank>%s<S2SV_blank><S2SV_blank>------\" , selname ) ; <S2SV_EndBug> if ( fscanf ( fp , \"<S2SV_blank><S2SV_blank>sy<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>sx<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>cy<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>cx<S2SV_blank>=<S2SV_blank>%d\\\\n\" , & sy , & sx , & cy , & cx ) != 4 ) { LEPT_FREE ( selname ) ; return ( SEL * ) ERROR_PTR ( \"dimensions<S2SV_blank>not<S2SV_blank>read\" , procName , NULL ) ; } if ( ( sel = selCreate ( sy , sx , selname ) ) == NULL ) { LEPT_FREE ( selname ) ; return ( SEL * ) ERROR_PTR ( \"sel<S2SV_blank>not<S2SV_blank>made\" , procName , NULL ) ; } selSetOrigin ( sel , cy , cx ) ; for ( i = 0 ; i < sy ; i ++ ) { ignore = fscanf ( fp , \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" ) ; for ( j = 0 ; j < sx ; j ++ ) ignore = fscanf ( fp , \"%1d\" , & sel -> data [ i ] [ j ] ) ; ignore = fscanf ( fp , \"\\\\n\" ) ; } ignore = fscanf ( fp , \"\\\\n\" ) ; LEPT_FREE ( selname ) ; return sel ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char linebuf [ L_BUFSIZE <S2SV_ModEnd> ] ; l_int32 <S2SV_ModStart> ( linebuf , L_BUFSIZE <S2SV_ModEnd> , fp ) <S2SV_ModStart> ( linebuf , \"<S2SV_blank><S2SV_blank>------<S2SV_blank><S2SV_blank>%200s<S2SV_blank><S2SV_blank>------\" <S2SV_ModEnd> , selname )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0216\n\n```\nCWE-20 void xenvif_disconnect ( struct xenvif * vif ) { <S2SV_StartBug> struct net_device * dev = vif -> dev ; <S2SV_EndBug> <S2SV_StartBug> if ( netif_carrier_ok ( dev ) ) { <S2SV_EndBug> rtnl_lock ( ) ; netif_carrier_off ( dev ) ; if ( netif_running ( dev ) ) <S2SV_StartBug> xenvif_down ( vif ) ; <S2SV_EndBug> <S2SV_StartBug> rtnl_unlock ( ) ; <S2SV_EndBug> xenvif_put ( vif ) ; } atomic_dec ( & vif -> refcnt ) ; wait_event ( vif -> waiting_to_free , atomic_read ( & vif -> refcnt ) == 0 ) ; del_timer_sync ( & vif -> credit_timeout ) ; if ( vif -> irq ) unbind_from_irqhandler ( vif -> irq , vif ) ; unregister_netdev ( vif -> dev ) ; xen_netbk_unmap_frontend_rings ( vif ) ; free_netdev ( vif -> dev ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vif ) { <S2SV_ModEnd> if ( netif_carrier_ok <S2SV_ModStart> ( netif_carrier_ok ( vif -> <S2SV_ModEnd> dev ) ) <S2SV_ModStart> dev ) ) xenvif_carrier_off <S2SV_ModEnd> ( vif ) <S2SV_ModStart> vif ) ; <S2SV_ModEnd> atomic_dec ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-326 <S2SV_StartBug> static u32 __ipv6_select_ident ( struct net * net , u32 hashrnd , <S2SV_EndBug> const struct in6_addr * dst , const struct in6_addr * src ) { <S2SV_StartBug> u32 hash , id ; <S2SV_EndBug> <S2SV_StartBug> hash = __ipv6_addr_jhash ( dst , hashrnd ) ; <S2SV_EndBug> <S2SV_StartBug> hash = __ipv6_addr_jhash ( src , hash ) ; <S2SV_EndBug> hash ^= net_hash_mix ( net ) ; id = ip_idents_reserve ( hash , 1 ) ; if ( unlikely ( ! id ) ) id = 1 << 31 ; return id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> net * net <S2SV_ModEnd> , const struct <S2SV_ModStart> src ) { const struct { struct in6_addr dst ; struct in6_addr src ; } __aligned ( SIPHASH_ALIGNMENT ) combined = { . dst = * dst , . src = * src , } ; <S2SV_ModStart> , id ; if ( unlikely ( siphash_key_is_zero ( & net -> ipv4 . ip_id_key ) ) ) get_random_bytes ( & net -> ipv4 . ip_id_key , sizeof ( net -> ipv4 . ip_id_key ) <S2SV_ModEnd> ) ; hash <S2SV_ModStart> ; hash = siphash ( & combined , sizeof ( combined ) , & net -> ipv4 . ip_id_key <S2SV_ModEnd> ) ; id\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 vpx_codec_err_t vpx_svc_init ( SvcContext * svc_ctx , vpx_codec_ctx_t * codec_ctx , vpx_codec_iface_t * iface , vpx_codec_enc_cfg_t * enc_cfg ) { <S2SV_StartBug> int max_intra_size_pct ; <S2SV_EndBug> vpx_codec_err_t res ; <S2SV_StartBug> SvcInternal * const si = get_svc_internal ( svc_ctx ) ; <S2SV_EndBug> if ( svc_ctx == NULL || codec_ctx == NULL || iface == NULL || enc_cfg == NULL ) { return VPX_CODEC_INVALID_PARAM ; } if ( si == NULL ) return VPX_CODEC_MEM_ERROR ; si -> codec_ctx = codec_ctx ; si -> width = enc_cfg -> g_w ; si -> height = enc_cfg -> g_h ; if ( enc_cfg -> kf_max_dist < 2 ) { svc_log ( svc_ctx , SVC_LOG_ERROR , \"key<S2SV_blank>frame<S2SV_blank>distance<S2SV_blank>too<S2SV_blank>small:<S2SV_blank>%d\\\\n\" , enc_cfg -> kf_max_dist ) ; return VPX_CODEC_INVALID_PARAM ; } si -> kf_dist = enc_cfg -> kf_max_dist ; if ( svc_ctx -> spatial_layers == 0 ) svc_ctx -> spatial_layers = VPX_SS_DEFAULT_LAYERS ; if ( svc_ctx -> spatial_layers < 1 || svc_ctx -> spatial_layers > VPX_SS_MAX_LAYERS ) { svc_log ( svc_ctx , SVC_LOG_ERROR , \"spatial<S2SV_blank>layers:<S2SV_blank>invalid<S2SV_blank>value:<S2SV_blank>%d\\\\n\" , svc_ctx -> spatial_layers ) ; return VPX_CODEC_INVALID_PARAM ; } <S2SV_StartBug> res = parse_quantizer_values ( svc_ctx , si -> quantizers , 0 ) ; <S2SV_EndBug> if ( res != VPX_CODEC_OK ) return res ; <S2SV_StartBug> res = parse_quantizer_values ( svc_ctx , si -> quantizers_keyframe , 1 ) ; <S2SV_EndBug> if ( res != VPX_CODEC_OK ) <S2SV_StartBug> memcpy ( si -> quantizer_keyframe , si -> quantizer , sizeof ( si -> quantizer ) ) ; <S2SV_EndBug> res = parse_scale_factors ( svc_ctx , si -> scale_factors ) ; if ( res != VPX_CODEC_OK ) return res ; <S2SV_StartBug> res = parse_options ( svc_ctx , si -> options ) ; <S2SV_EndBug> if ( res != VPX_CODEC_OK ) return res ; si -> layers = svc_ctx -> spatial_layers ; if ( si -> layers > 1 ) { int i ; float total = 0 ; float alloc_ratio [ VPX_SS_MAX_LAYERS ] = { 0 } ; assert ( si -> layers <= VPX_SS_MAX_LAYERS ) ; for ( i = 0 ; i < si -> layers ; ++ i ) { int pos = i + VPX_SS_MAX_LAYERS - svc_ctx -> spatial_layers ; if ( pos < VPX_SS_MAX_LAYERS && si -> scaling_factor_den [ pos ] > 0 ) { alloc_ratio [ i ] = ( float ) ( si -> scaling_factor_num [ pos ] * 1.0 / si -> scaling_factor_den [ pos ] ) ; alloc_ratio [ i ] *= alloc_ratio [ i ] ; total += alloc_ratio [ i ] ; } } for ( i = 0 ; i < si -> layers ; ++ i ) { if ( total > 0 ) { enc_cfg -> ss_target_bitrate [ i ] = ( unsigned int ) ( enc_cfg -> rc_target_bitrate * alloc_ratio [ i ] / total ) ; } } } enc_cfg -> ss_number_layers = si -> layers ; enc_cfg -> ts_number_layers = 1 ; enc_cfg -> kf_mode = VPX_KF_DISABLED ; enc_cfg -> g_lag_in_frames = 0 ; enc_cfg -> rc_dropframe_thresh = 0 ; enc_cfg -> rc_end_usage = VPX_CBR ; enc_cfg -> rc_resize_allowed = 0 ; if ( enc_cfg -> g_pass == VPX_RC_ONE_PASS ) { enc_cfg -> rc_min_quantizer = 33 ; enc_cfg -> rc_max_quantizer = 33 ; } enc_cfg -> rc_undershoot_pct = 100 ; enc_cfg -> rc_overshoot_pct = 15 ; enc_cfg -> rc_buf_initial_sz = 500 ; enc_cfg -> rc_buf_optimal_sz = 600 ; enc_cfg -> rc_buf_sz = 1000 ; enc_cfg -> g_error_resilient = 1 ; <S2SV_StartBug> res = vpx_codec_enc_init ( codec_ctx , iface , enc_cfg , VPX_CODEC_USE_PSNR ) ; <S2SV_EndBug> if ( res != VPX_CODEC_OK ) { svc_log ( svc_ctx , SVC_LOG_ERROR , \"svc_enc_init<S2SV_blank>error\\\\n\" ) ; return res ; } <S2SV_StartBug> vpx_codec_control ( codec_ctx , VP9E_SET_SVC , 1 ) ; <S2SV_EndBug> vpx_codec_control ( codec_ctx , VP8E_SET_CPUUSED , 1 ) ; vpx_codec_control ( codec_ctx , VP8E_SET_STATIC_THRESHOLD , 1 ) ; vpx_codec_control ( codec_ctx , VP8E_SET_NOISE_SENSITIVITY , 1 ) ; vpx_codec_control ( codec_ctx , VP8E_SET_TOKEN_PARTITIONS , 1 ) ; max_intra_size_pct = ( int ) ( ( ( double ) enc_cfg -> rc_buf_optimal_sz * 0.5 ) * ( ( double ) enc_cfg -> g_timebase . den / enc_cfg -> g_timebase . num ) / 10.0 ) ; vpx_codec_control ( codec_ctx , VP8E_SET_MAX_INTRA_BITRATE_PCT , max_intra_size_pct ) ; return VPX_CODEC_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> enc_cfg ) { <S2SV_ModEnd> vpx_codec_err_t res ; <S2SV_ModStart> vpx_codec_err_t res ; int i ; SvcInternal_t <S2SV_ModEnd> * const si <S2SV_ModStart> VPX_CODEC_INVALID_PARAM ; } if ( svc_ctx -> temporal_layering_mode == 3 ) { svc_ctx -> temporal_layers = 3 ; } else if ( svc_ctx -> temporal_layering_mode == 2 ) { svc_ctx -> temporal_layers = 2 ; } for ( i = 0 ; i < VPX_SS_MAX_LAYERS ; ++ i ) { si -> svc_params . max_quantizers [ i ] = MAX_QUANTIZER ; si -> svc_params . min_quantizers [ i ] = 0 ; si -> svc_params . scaling_factor_num [ i ] = DEFAULT_SCALE_FACTORS_NUM [ i ] ; si -> svc_params . scaling_factor_den [ i ] = DEFAULT_SCALE_FACTORS_DEN [ i ] ; } res = parse_options ( svc_ctx , si -> options <S2SV_ModEnd> ) ; if <S2SV_ModStart> return res ; if ( svc_ctx -> spatial_layers < 1 ) svc_ctx -> spatial_layers = 1 ; if ( svc_ctx -> spatial_layers > VPX_SS_MAX_LAYERS ) svc_ctx -> spatial_layers = VPX_SS_MAX_LAYERS ; if ( svc_ctx -> temporal_layers < 1 ) svc_ctx -> temporal_layers = 1 ; if ( svc_ctx -> temporal_layers > VPX_TS_MAX_LAYERS ) svc_ctx -> temporal_layers = VPX_TS_MAX_LAYERS ; if ( svc_ctx -> temporal_layers * svc_ctx -> spatial_layers > VPX_MAX_LAYERS ) { svc_log ( svc_ctx , SVC_LOG_ERROR , \"spatial<S2SV_blank>layers<S2SV_blank>*<S2SV_blank>temporal<S2SV_blank>layers<S2SV_blank>exceeds<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>number<S2SV_blank>of<S2SV_blank>\" \"allowed<S2SV_blank>layers<S2SV_blank>of<S2SV_blank>%d\\\\n\" , svc_ctx -> spatial_layers * svc_ctx -> temporal_layers , ( int ) VPX_MAX_LAYERS ) ; return VPX_CODEC_INVALID_PARAM ; } assign_layer_bitrates ( svc_ctx , enc_cfg ) ; # if CONFIG_SPATIAL_SVC for ( i = 0 ; i < svc_ctx -> spatial_layers ; ++ i ) enc_cfg -> ss_enable_auto_alt_ref [ i ] = si -> enable_auto_alt_ref [ i ] ; # endif if ( svc_ctx -> temporal_layers > 1 ) { int i ; for ( i = 0 ; i < svc_ctx -> temporal_layers ; ++ i ) { enc_cfg -> ts_target_bitrate [ i ] = enc_cfg -> rc_target_bitrate / svc_ctx -> temporal_layers ; enc_cfg -> ts_rate_decimator [ i ] = 1 << ( svc_ctx -> temporal_layers - 1 - i ) ; } } if ( svc_ctx -> threads ) enc_cfg -> g_threads = svc_ctx -> threads ; enc_cfg -> ss_number_layers = svc_ctx -> spatial_layers ; enc_cfg -> ts_number_layers = svc_ctx -> temporal_layers ; if ( enc_cfg -> rc_end_usage == VPX_CBR ) { enc_cfg -> rc_resize_allowed = 0 ; enc_cfg -> rc_min_quantizer = 2 ; enc_cfg -> rc_max_quantizer = 63 ; enc_cfg -> rc_undershoot_pct = 50 ; enc_cfg -> rc_overshoot_pct = 50 ; enc_cfg -> rc_buf_initial_sz = 20 ; enc_cfg -> rc_buf_optimal_sz = 600 ; enc_cfg -> rc_buf_sz = 1000 ; } if ( enc_cfg -> g_error_resilient == 0 && si -> use_multiple_frame_contexts == 0 ) enc_cfg -> g_error_resilient = 1 ; res = vpx_codec_enc_init ( codec_ctx , iface , enc_cfg , VPX_CODEC_USE_PSNR <S2SV_ModEnd> ) ; if <S2SV_ModStart> != VPX_CODEC_OK ) { svc_log ( svc_ctx , SVC_LOG_ERROR , \"svc_enc_init<S2SV_blank>error\\\\n\" ) ; <S2SV_ModEnd> return res ; <S2SV_ModStart> return res ; } vpx_codec_control <S2SV_ModEnd> ( codec_ctx , <S2SV_ModStart> ( codec_ctx , VP9E_SET_SVC , 1 ) ; <S2SV_ModEnd> vpx_codec_control ( codec_ctx <S2SV_ModStart> ( codec_ctx , VP9E_SET_SVC_PARAMETERS , & si -> svc_params <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7533\n\n```\nCWE-125 static Image * ReadWPGImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { typedef struct { size_t FileId ; MagickOffsetType DataOffset ; unsigned int ProductType ; unsigned int FileType ; unsigned char MajorVersion ; unsigned char MinorVersion ; unsigned int EncryptKey ; unsigned int Reserved ; } WPGHeader ; typedef struct { unsigned char RecType ; size_t RecordLength ; } WPGRecord ; typedef struct { unsigned char Class ; unsigned char RecType ; size_t Extension ; size_t RecordLength ; } WPG2Record ; typedef struct { unsigned HorizontalUnits ; unsigned VerticalUnits ; unsigned char PosSizePrecision ; } WPG2Start ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType1 ; typedef struct { unsigned int Width ; unsigned int Height ; unsigned char Depth ; unsigned char Compression ; } WPG2BitmapType1 ; typedef struct { unsigned int RotAngle ; unsigned int LowLeftX ; unsigned int LowLeftY ; unsigned int UpRightX ; unsigned int UpRightY ; unsigned int Width ; unsigned int Height ; unsigned int Depth ; unsigned int HorzRes ; unsigned int VertRes ; } WPGBitmapType2 ; typedef struct { unsigned int StartIndex ; unsigned int NumOfEntries ; } WPGColorMapRec ; Image * image ; unsigned int status ; WPGHeader Header ; WPGRecord Rec ; WPG2Record Rec2 ; WPG2Start StartWPG ; WPGBitmapType1 BitmapHeader1 ; WPG2BitmapType1 Bitmap2Header1 ; WPGBitmapType2 BitmapHeader2 ; WPGColorMapRec WPG_Palette ; int i , bpp , WPG2Flags ; ssize_t ldblk ; size_t one ; unsigned char * BImgBuff ; tCTM CTM ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; one = 1 ; image = AcquireImage ( image_info , exception ) ; image -> depth = 8 ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } Header . FileId = ReadBlobLSBLong ( image ) ; Header . DataOffset = ( MagickOffsetType ) ReadBlobLSBLong ( image ) ; Header . ProductType = ReadBlobLSBShort ( image ) ; Header . FileType = ReadBlobLSBShort ( image ) ; Header . MajorVersion = ReadBlobByte ( image ) ; Header . MinorVersion = ReadBlobByte ( image ) ; Header . EncryptKey = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . FileId != 0x435057FF || ( Header . ProductType >> 8 ) != 0x16 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( Header . EncryptKey != 0 ) ThrowReaderException ( CoderError , \"EncryptedWPGImageFileNotSupported\" ) ; image -> columns = 1 ; image -> rows = 1 ; image -> colors = 0 ; bpp = 0 ; BitmapHeader2 . RotAngle = 0 ; switch ( Header . FileType ) { case 1 : while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec . RecordLength ; switch ( Rec . RecType ) { case 0x0B : BitmapHeader1 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader1 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader1 . Width == 0 ) || ( BitmapHeader1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader1 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader1 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader1 . VertRes = ReadBlobLSBShort ( image ) ; if ( BitmapHeader1 . HorzRes && BitmapHeader1 . VertRes ) { image -> units = PixelsPerCentimeterResolution ; image -> resolution . x = BitmapHeader1 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader1 . VertRes / 470.0 ; } image -> columns = BitmapHeader1 . Width ; image -> rows = BitmapHeader1 . Height ; bpp = BitmapHeader1 . Depth ; goto UnpackRaster ; case 0x0E : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) ReadBlobByte ( image ) ) ; } break ; case 0x11 : if ( Rec . RecordLength > 8 ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 8 , ( ssize_t ) Rec . RecordLength - 8 , exception ) ; break ; case 0x14 : BitmapHeader2 . RotAngle = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . LowLeftY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightX = ReadBlobLSBShort ( image ) ; BitmapHeader2 . UpRightY = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Width = ReadBlobLSBShort ( image ) ; BitmapHeader2 . Height = ReadBlobLSBShort ( image ) ; if ( ( BitmapHeader2 . Width == 0 ) || ( BitmapHeader2 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; BitmapHeader2 . Depth = ReadBlobLSBShort ( image ) ; BitmapHeader2 . HorzRes = ReadBlobLSBShort ( image ) ; BitmapHeader2 . VertRes = ReadBlobLSBShort ( image ) ; image -> units = PixelsPerCentimeterResolution ; image -> page . width = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightX ) / 470.0 ) ; image -> page . height = ( unsigned int ) ( ( BitmapHeader2 . LowLeftX - BitmapHeader2 . UpRightY ) / 470.0 ) ; image -> page . x = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; image -> page . y = ( int ) ( BitmapHeader2 . LowLeftX / 470.0 ) ; if ( BitmapHeader2 . HorzRes && BitmapHeader2 . VertRes ) { image -> resolution . x = BitmapHeader2 . HorzRes / 470.0 ; image -> resolution . y = BitmapHeader2 . VertRes / 470.0 ; } image -> columns = BitmapHeader2 . Width ; image -> rows = BitmapHeader2 . Height ; bpp = BitmapHeader2 . Depth ; UnpackRaster : if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; ( i < ( int ) image -> colors ) && ( i < 256 ) ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( WPG1_Palette [ i ] . Red ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( WPG1_Palette [ i ] . Green ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( WPG1_Palette [ i ] . Blue ) ; } } else { if ( bpp < 24 ) if ( ( image -> colors < ( one << bpp ) ) && ( bpp != 24 ) ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } if ( bpp == 1 ) { if ( image -> colormap [ 0 ] . red == 0 && image -> colormap [ 0 ] . green == 0 && image -> colormap [ 0 ] . blue == 0 && image -> colormap [ 1 ] . red == 0 && image -> colormap [ 1 ] . green == 0 && image -> colormap [ 1 ] . blue == 0 ) { image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; } } if ( UnpackWPGRaster ( image , bpp , exception ) < 0 ) { DecompressionFailed : ThrowReaderException ( CoderError , \"UnableToDecompressImage\" ) ; } if ( Rec . RecType == 0x14 && BitmapHeader2 . RotAngle != 0 && ! image_info -> ping ) { if ( BitmapHeader2 . RotAngle & 0x8000 ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flop_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x2000 ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flip_image ) ; } } if ( BitmapHeader2 . RotAngle & 0x0FFF ) { Image * rotate_image ; rotate_image = RotateImage ( image , ( BitmapHeader2 . RotAngle & 0x0FFF ) , exception ) ; if ( rotate_image != ( Image * ) NULL ) { DuplicateBlob ( rotate_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , rotate_image ) ; } } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 0 ; image -> colors = 0 ; break ; case 0x1B : if ( Rec . RecordLength > 0x3C ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + 0x3C , ( ssize_t ) Rec . RecordLength - 0x3C , exception ) ; break ; } } break ; case 2 : ( void ) memset ( CTM , 0 , sizeof ( CTM ) ) ; StartWPG . PosSizePrecision = 0 ; while ( ! EOFBlob ( image ) ) { ( void ) SeekBlob ( image , Header . DataOffset , SEEK_SET ) ; if ( EOFBlob ( image ) ) break ; Rec2 . Class = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rec2 . RecType = ( i = ReadBlobByte ( image ) ) ; if ( i == EOF ) break ; Rd_WP_DWORD ( image , & Rec2 . Extension ) ; Rd_WP_DWORD ( image , & Rec2 . RecordLength ) ; if ( EOFBlob ( image ) ) break ; Header . DataOffset = TellBlob ( image ) + Rec2 . RecordLength ; switch ( Rec2 . RecType ) { case 1 : StartWPG . HorizontalUnits = ReadBlobLSBShort ( image ) ; StartWPG . VerticalUnits = ReadBlobLSBShort ( image ) ; StartWPG . PosSizePrecision = ReadBlobByte ( image ) ; break ; case 0x0C : WPG_Palette . StartIndex = ReadBlobLSBShort ( image ) ; WPG_Palette . NumOfEntries = ReadBlobLSBShort ( image ) ; image -> colors = WPG_Palette . NumOfEntries ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = WPG_Palette . StartIndex ; i < ( int ) WPG_Palette . NumOfEntries ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( char ) ReadBlobByte ( image ) ) ; ( void ) ReadBlobByte ( image ) ; } break ; case 0x0E : Bitmap2Header1 . Width = ReadBlobLSBShort ( image ) ; Bitmap2Header1 . Height = ReadBlobLSBShort ( image ) ; if ( ( Bitmap2Header1 . Width == 0 ) || ( Bitmap2Header1 . Height == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; Bitmap2Header1 . Depth = ReadBlobByte ( image ) ; Bitmap2Header1 . Compression = ReadBlobByte ( image ) ; if ( Bitmap2Header1 . Compression > 1 ) continue ; switch ( Bitmap2Header1 . Depth ) { case 1 : bpp = 1 ; break ; case 2 : bpp = 2 ; break ; case 3 : bpp = 4 ; break ; case 4 : bpp = 8 ; break ; case 8 : bpp = 24 ; break ; default : continue ; } image -> columns = Bitmap2Header1 . Width ; image -> rows = Bitmap2Header1 . Height ; if ( ( image -> colors == 0 ) && ( bpp != 24 ) ) { size_t one ; one = 1 ; image -> colors = one << bpp ; if ( ! AcquireImageColormap ( image , image -> colors , exception ) ) goto NoMemory ; } else { if ( bpp < 24 ) if ( image -> colors < ( one << bpp ) && bpp != 24 ) image -> colormap = ( PixelInfo * ) ResizeQuantumMemory ( image -> colormap , ( size_t ) ( one << bpp ) , sizeof ( * image -> colormap ) ) ; } switch ( Bitmap2Header1 . Compression ) { case 0 : { ldblk = ( ssize_t ) ( ( bpp * image -> columns + 7 ) / 8 ) ; BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) <S2SV_StartBug> ldblk , sizeof ( * BImgBuff ) ) ; <S2SV_EndBug> if ( BImgBuff == ( unsigned char * ) NULL ) goto NoMemory ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { ( void ) ReadBlob ( image , ldblk , BImgBuff ) ; InsertRow ( image , BImgBuff , i , bpp , exception ) ; } if ( BImgBuff ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; ; break ; } case 1 : { if ( UnpackWPG2Raster ( image , bpp , exception ) < 0 ) goto DecompressionFailed ; break ; } } if ( CTM [ 0 ] [ 0 ] < 0 && ! image_info -> ping ) { Image * flop_image ; flop_image = FlopImage ( image , exception ) ; if ( flop_image != ( Image * ) NULL ) { DuplicateBlob ( flop_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flop_image ) ; } } if ( CTM [ 1 ] [ 1 ] < 0 && ! image_info -> ping ) { Image * flip_image ; flip_image = FlipImage ( image , exception ) ; if ( flip_image != ( Image * ) NULL ) { DuplicateBlob ( flip_image , image ) ; ( void ) RemoveLastImageFromList ( & image ) ; AppendImageToList ( & image , flip_image ) ; } } AcquireNextImage ( image_info , image , exception ) ; image -> depth = 8 ; if ( image -> next == ( Image * ) NULL ) goto Finish ; image = SyncNextImageInList ( image ) ; image -> columns = image -> rows = 1 ; image -> colors = 0 ; break ; case 0x12 : i = ReadBlobLSBShort ( image ) ; if ( Rec2 . RecordLength > ( unsigned int ) i ) image = ExtractPostscript ( image , image_info , TellBlob ( image ) + i , ( ssize_t ) ( Rec2 . RecordLength - i - 2 ) , exception ) ; break ; case 0x1B : WPG2Flags = LoadWPG2Flags ( image , StartWPG . PosSizePrecision , NULL , & CTM ) ; ( void ) WPG2Flags ; break ; } } break ; default : { ThrowReaderException ( CoderError , \"DataEncodingSchemeIsNotSupported\" ) ; } } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; Finish : ( void ) CloseBlob ( image ) ; { Image * p ; ssize_t scene = 0 ; p = image ; image = NULL ; while ( p != ( Image * ) NULL ) { Image * tmp = p ; if ( ( p -> rows == 0 ) || ( p -> columns == 0 ) ) { p = p -> previous ; DeleteImageFromList ( & tmp ) ; } else { image = p ; p = p -> previous ; } } for ( p = image ; p != ( Image * ) NULL ; p = p -> next ) p -> scene = ( size_t ) scene ++ ; } if ( image == ( Image * ) NULL ) ThrowReaderException ( CorruptImageError , \"ImageFileDoesNotContainAnyImageData\" ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t ) ldblk + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2182\n\n```\nCWE-264 int _mkp_stage_30 ( struct plugin * p , struct client_session * cs , struct session_request * sr ) { mk_ptr_t referer ; ( void ) p ; ( void ) cs ; PLUGIN_TRACE ( \"[FD<S2SV_blank>%i]<S2SV_blank>Mandril<S2SV_blank>validating<S2SV_blank>URL\" , cs -> socket ) ; <S2SV_StartBug> if ( mk_security_check_url ( sr -> uri ) < 0 ) { <S2SV_EndBug> PLUGIN_TRACE ( \"[FD<S2SV_blank>%i]<S2SV_blank>Close<S2SV_blank>connection,<S2SV_blank>blocked<S2SV_blank>URL\" , cs -> socket ) ; mk_api -> header_set_http_status ( sr , MK_CLIENT_FORBIDDEN ) ; return MK_PLUGIN_RET_CLOSE_CONX ; } PLUGIN_TRACE ( \"[FD<S2SV_blank>%d]<S2SV_blank>Mandril<S2SV_blank>validating<S2SV_blank>hotlinking\" , cs -> socket ) ; referer = mk_api -> header_get ( & sr -> headers_toc , \"Referer\" , strlen ( \"Referer\" ) ) ; if ( mk_security_check_hotlink ( sr -> uri_processed , sr -> host , referer ) < 0 ) { PLUGIN_TRACE ( \"[FD<S2SV_blank>%i]<S2SV_blank>Close<S2SV_blank>connection,<S2SV_blank>deny<S2SV_blank>hotlinking.\" , cs -> socket ) ; mk_api -> header_set_http_status ( sr , MK_CLIENT_FORBIDDEN ) ; return MK_PLUGIN_RET_CLOSE_CONX ; } return MK_PLUGIN_RET_NOT_ME ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sr -> uri_processed <S2SV_ModEnd> ) < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3698\n\n```\nCWE-284 static int ndp_sock_open ( struct ndp * ndp ) { int sock ; int ret ; int err ; int val ; sock = socket ( PF_INET6 , SOCK_RAW , IPPROTO_ICMPV6 ) ; if ( sock == - 1 ) { err ( ndp , \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>ICMP6<S2SV_blank>socket.\" ) ; return - errno ; } val = 1 ; ret = setsockopt ( sock , IPPROTO_IPV6 , IPV6_RECVPKTINFO , & val , sizeof ( val ) ) ; if ( ret == - 1 ) { err ( ndp , \"Failed<S2SV_blank>to<S2SV_blank>setsockopt<S2SV_blank>IPV6_RECVPKTINFO.\" ) ; err = - errno ; goto close_sock ; } val = 255 ; ret = setsockopt ( sock , IPPROTO_IPV6 , IPV6_MULTICAST_HOPS , & val , sizeof ( val ) ) ; if ( ret == - 1 ) { <S2SV_StartBug> err ( ndp , \"Failed<S2SV_blank>to<S2SV_blank>setsockopt<S2SV_blank>IPV6_MULTICAST_HOPS.\" ) ; <S2SV_EndBug> err = - errno ; goto close_sock ; } ndp -> sock = sock ; return 0 ; close_sock : close ( sock ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ndp , \"Failed<S2SV_blank>to<S2SV_blank>setsockopt<S2SV_blank>IPV6_MULTICAST_HOPS.\" ) ; err = - errno ; goto close_sock ; } val = 1 ; ret = setsockopt ( sock , IPPROTO_IPV6 , IPV6_RECVHOPLIMIT , & val , sizeof ( val ) ) ; if ( ret == - 1 ) { err ( ndp , \"Failed<S2SV_blank>to<S2SV_blank>setsockopt<S2SV_blank>IPV6_RECVHOPLIMIT,.\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11142\n\n```\nCWE-400 static zend_bool add_post_var ( zval * arr , post_var_data_t * var , zend_bool eof ) { <S2SV_StartBug> char * ksep , * vsep , * val ; <S2SV_EndBug> size_t klen , vlen ; size_t new_vlen ; if ( var -> ptr >= var -> end ) { return 0 ; } <S2SV_StartBug> vsep = memchr ( var -> ptr , '&' , var -> end - var -> ptr ) ; <S2SV_EndBug> if ( ! vsep ) { <S2SV_StartBug> if ( ! eof ) { <S2SV_EndBug> return 0 ; } else { vsep = var -> end ; } } ksep = memchr ( var -> ptr , '=' , vsep - var -> ptr ) ; if ( ksep ) { * ksep = '\\\\0' ; klen = ksep - var -> ptr ; vlen = vsep - ++ ksep ; } else { ksep = \"\" ; klen = vsep - var -> ptr ; vlen = 0 ; } php_url_decode ( var -> ptr , klen ) ; val = estrndup ( ksep , vlen ) ; if ( vlen ) { vlen = php_url_decode ( val , vlen ) ; } if ( sapi_module . input_filter ( PARSE_POST , var -> ptr , & val , vlen , & new_vlen ) ) { php_register_variable_safe ( var -> ptr , val , new_vlen , arr ) ; } efree ( val ) ; var -> ptr = vsep + ( vsep != var -> end ) ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { char * start , * <S2SV_ModStart> 0 ; } start = var -> ptr + var -> already_scanned ; <S2SV_ModStart> = memchr ( start <S2SV_ModEnd> , '&' , <S2SV_ModStart> -> end - start <S2SV_ModEnd> ) ; if <S2SV_ModStart> eof ) { var -> already_scanned = var -> end - var -> ptr ; <S2SV_ModStart> end ) ; var -> already_scanned = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4178\n\n```\nCWE-000 void pin_remove ( struct fs_pin * pin ) { spin_lock ( & pin_lock ) ; <S2SV_StartBug> hlist_del ( & pin -> m_list ) ; <S2SV_EndBug> <S2SV_StartBug> hlist_del ( & pin -> s_list ) ; <S2SV_EndBug> spin_unlock ( & pin_lock ) ; spin_lock_irq ( & pin -> wait . lock ) ; pin -> done = 1 ; wake_up_locked ( & pin -> wait ) ; spin_unlock_irq ( & pin -> wait . lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pin_lock ) ; hlist_del_init <S2SV_ModEnd> ( & pin <S2SV_ModStart> m_list ) ; hlist_del_init <S2SV_ModEnd> ( & pin\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7448\n\n```\nCWE-22 void wiki_handle_http_request ( HttpRequest * req ) { HttpResponse * res = http_response_new ( req ) ; char * page = http_request_get_path_info ( req ) ; char * command = http_request_get_query_string ( req ) ; char * wikitext = \"\" ; util_dehttpize ( page ) ; if ( ! strcmp ( page , \"/\" ) ) { if ( access ( \"WikiHome\" , R_OK ) != 0 ) wiki_redirect ( res , \"/WikiHome?create\" ) ; page = \"/WikiHome\" ; } if ( ! strcmp ( page , \"/styles.css\" ) ) { http_response_set_content_type ( res , \"text/css\" ) ; http_response_printf ( res , \"%s\" , CssData ) ; http_response_send ( res ) ; exit ( 0 ) ; } if ( ! strcmp ( page , \"/favicon.ico\" ) ) { http_response_set_content_type ( res , \"image/ico\" ) ; http_response_set_data ( res , FaviconData , FaviconDataLen ) ; http_response_send ( res ) ; exit ( 0 ) ; } page = page + 1 ; if ( ! strncmp ( page , \"api/\" , 4 ) ) { char * p ; page += 4 ; for ( p = page ; * p != '\\\\0' ; p ++ ) if ( * p == '?' ) { * p = '\\\\0' ; break ; } wiki_handle_rest_call ( req , res , page ) ; exit ( 0 ) ; } <S2SV_StartBug> if ( strchr ( page , '/' ) ) <S2SV_EndBug> { http_response_set_status ( res , 404 , \"Not<S2SV_blank>Found\" ) ; http_response_printf ( res , \"<html><body>404<S2SV_blank>Not<S2SV_blank>Found</body></html>\\\\n\" ) ; http_response_send ( res ) ; exit ( 0 ) ; } if ( ! strcmp ( page , \"Changes\" ) ) { wiki_show_changes_page ( res ) ; } else if ( ! strcmp ( page , \"ChangesRss\" ) ) { wiki_show_changes_page_rss ( res ) ; } else if ( ! strcmp ( page , \"Search\" ) ) { wiki_show_search_results_page ( res , http_request_param_get ( req , \"expr\" ) ) ; } else if ( ! strcmp ( page , \"Create\" ) ) { if ( ( wikitext = http_request_param_get ( req , \"title\" ) ) != NULL ) { wiki_redirect ( res , http_request_param_get ( req , \"title\" ) ) ; } else { wiki_show_create_page ( res ) ; } } else { if ( ( wikitext = http_request_param_get ( req , \"wikitext\" ) ) != NULL ) { file_write ( page , wikitext ) ; } if ( access ( page , R_OK ) == 0 ) { wikitext = file_read ( page ) ; if ( ! strcmp ( command , \"edit\" ) ) { wiki_show_edit_page ( res , wikitext , page ) ; } else { wiki_show_page ( res , wikitext , page ) ; } } else { if ( ! strcmp ( command , \"create\" ) ) { wiki_show_edit_page ( res , NULL , page ) ; } else { char buf [ 1024 ] ; snprintf ( buf , 1024 , \"%s?create\" , page ) ; wiki_redirect ( res , buf ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ! page_name_is_good ( page <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int temporal_filter_find_matching_mb_c ( VP9_COMP * cpi , uint8_t * arf_frame_buf , uint8_t * frame_ptr_buf , int stride ) { <S2SV_StartBug> MACROBLOCK * x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> int step_param ; <S2SV_EndBug> int sadpb = x -> sadperbit16 ; <S2SV_StartBug> int bestsme = INT_MAX ; <S2SV_EndBug> MV best_ref_mv1 = { 0 , 0 } ; MV best_ref_mv1_full ; MV * ref_mv = & x -> e_mbd . mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_mv ; struct buf_2d src = x -> plane [ 0 ] . src ; struct buf_2d pre = xd -> plane [ 0 ] . pre [ 0 ] ; best_ref_mv1_full . col = best_ref_mv1 . col >> 3 ; best_ref_mv1_full . row = best_ref_mv1 . row >> 3 ; x -> plane [ 0 ] . src . buf = arf_frame_buf ; x -> plane [ 0 ] . src . stride = stride ; xd -> plane [ 0 ] . pre [ 0 ] . buf = frame_ptr_buf ; xd -> plane [ 0 ] . pre [ 0 ] . stride = stride ; <S2SV_StartBug> if ( cpi -> speed < 8 ) <S2SV_EndBug> step_param = cpi -> sf . reduce_first_step_size + ( ( cpi -> speed > 5 ) ? 1 : 0 ) ; else step_param = cpi -> sf . reduce_first_step_size + 2 ; <S2SV_StartBug> step_param = MIN ( step_param , ( cpi -> sf . max_step_search_steps - 2 ) ) ; <S2SV_EndBug> vp9_hex_search ( x , & best_ref_mv1_full , step_param , sadpb , 1 , <S2SV_StartBug> & cpi -> fn_ptr [ BLOCK_16X16 ] , 0 , & best_ref_mv1 , ref_mv ) ; <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> int distortion ; unsigned int sse ; bestsme = cpi -> find_fractional_mv_step ( x , ref_mv , & best_ref_mv1 , cpi -> common . allow_high_precision_mv , x -> errorperbit , & cpi -> fn_ptr [ BLOCK_16X16 ] , 0 , cpi -> sf . subpel_iters_per_step , NULL , NULL , & distortion , & sse ) ; } x -> plane [ 0 ] . src = src ; xd -> plane [ 0 ] . pre [ 0 ] = pre ; return bestsme ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { MACROBLOCK * const x = & cpi -> td . <S2SV_ModEnd> mb ; MACROBLOCKD <S2SV_ModStart> -> e_mbd ; const MV_SPEED_FEATURES * const mv_sf = & cpi -> sf . mv ; <S2SV_ModStart> bestsme = INT_MAX ; int distortion ; unsigned int sse ; int cost_list [ 5 ] <S2SV_ModStart> = stride ; step_param = mv_sf -> reduce_first_step_size ; step_param = MIN ( step_param , MAX_MVSEARCH_STEPS <S2SV_ModEnd> - 2 ) <S2SV_ModStart> - 2 ) <S2SV_ModEnd> ; vp9_hex_search ( <S2SV_ModStart> , 1 , cond_cost_list ( cpi , cost_list ) , <S2SV_ModStart> ref_mv ) ; bestsme = cpi -> find_fractional_mv_step ( x , ref_mv , & best_ref_mv1 , cpi -> common . allow_high_precision_mv , x -> errorperbit , & cpi -> fn_ptr [ BLOCK_16X16 ] , 0 , mv_sf -> subpel_iters_per_step , cond_cost_list ( cpi , cost_list ) , NULL , NULL , & distortion , & sse , NULL , 0 , 0 ) ; <S2SV_ModEnd> x -> plane\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13406\n\n```\nCWE-190 static int uvesafb_setcmap ( struct fb_cmap * cmap , struct fb_info * info ) { struct uvesafb_pal_entry * entries ; int shift = 16 - dac_width ; int i , err = 0 ; if ( info -> var . bits_per_pixel == 8 ) { if ( cmap -> start + cmap -> len > info -> cmap . start + info -> cmap . len || cmap -> start < info -> cmap . start ) return - EINVAL ; <S2SV_StartBug> entries = kmalloc ( sizeof ( * entries ) * cmap -> len , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! entries ) return - ENOMEM ; for ( i = 0 ; i < cmap -> len ; i ++ ) { entries [ i ] . red = cmap -> red [ i ] >> shift ; entries [ i ] . green = cmap -> green [ i ] >> shift ; entries [ i ] . blue = cmap -> blue [ i ] >> shift ; entries [ i ] . pad = 0 ; } err = uvesafb_setpalette ( entries , cmap -> len , cmap -> start , info ) ; kfree ( entries ) ; } else { for ( i = 0 ; i < cmap -> len ; i ++ ) { err |= uvesafb_setcolreg ( cmap -> start + i , cmap -> red [ i ] , cmap -> green [ i ] , cmap -> blue [ i ] , 0 , info ) ; } } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; entries = kmalloc_array ( cmap -> len , <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> * entries ) , <S2SV_ModEnd> GFP_KERNEL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 const char * vpx_svc_get_message ( const SvcContext * svc_ctx ) { <S2SV_StartBug> const SvcInternal * const si = get_const_svc_internal ( svc_ctx ) ; <S2SV_EndBug> if ( svc_ctx == NULL || si == NULL ) return NULL ; return si -> message_buffer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { const SvcInternal_t <S2SV_ModEnd> * const si\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8649\n\n```\nCWE-264 static int attach_child_main ( void * data ) { struct attach_clone_payload * payload = ( struct attach_clone_payload * ) data ; int ipc_socket = payload -> ipc_socket ; <S2SV_StartBug> int procfd = payload -> procfd ; <S2SV_EndBug> lxc_attach_options_t * options = payload -> options ; struct lxc_proc_context_info * init_ctx = payload -> init_ctx ; # if HAVE_SYS_PERSONALITY_H long new_personality ; # endif int ret ; int status ; int expected ; long flags ; int fd ; <S2SV_StartBug> uid_t new_uid ; <S2SV_EndBug> gid_t new_gid ; expected = 0 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_socket , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { <S2SV_StartBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>(0)\" ) ; <S2SV_EndBug> shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( ! ( options -> namespaces & CLONE_NEWNS ) && ( options -> attach_flags & LXC_ATTACH_REMOUNT_PROC_SYS ) ) { ret = lxc_attach_remount_sys_proc ( ) ; if ( ret < 0 ) { shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } # if HAVE_SYS_PERSONALITY_H if ( options -> personality < 0 ) new_personality = init_ctx -> personality ; else new_personality = options -> personality ; if ( options -> attach_flags & LXC_ATTACH_SET_PERSONALITY ) { ret = personality ( new_personality ) ; if ( ret < 0 ) { SYSERROR ( \"could<S2SV_blank>not<S2SV_blank>ensure<S2SV_blank>correct<S2SV_blank>architecture\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } # endif if ( options -> attach_flags & LXC_ATTACH_DROP_CAPABILITIES ) { ret = lxc_attach_drop_privs ( init_ctx ) ; if ( ret < 0 ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>drop<S2SV_blank>privileges\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } ret = lxc_attach_set_environment ( options -> env_policy , options -> extra_env_vars , options -> extra_keep_env ) ; if ( ret < 0 ) { ERROR ( \"could<S2SV_blank>not<S2SV_blank>set<S2SV_blank>initial<S2SV_blank>environment<S2SV_blank>for<S2SV_blank>attached<S2SV_blank>process\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } new_uid = 0 ; new_gid = 0 ; if ( options -> namespaces & CLONE_NEWUSER ) lxc_attach_get_init_uidgid ( & new_uid , & new_gid ) ; if ( options -> uid != ( uid_t ) - 1 ) new_uid = options -> uid ; if ( options -> gid != ( gid_t ) - 1 ) new_gid = options -> gid ; if ( options -> stdin_fd && isatty ( options -> stdin_fd ) ) { if ( setsid ( ) < 0 ) { SYSERROR ( \"unable<S2SV_blank>to<S2SV_blank>setsid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } if ( ioctl ( options -> stdin_fd , TIOCSCTTY , ( char * ) NULL ) < 0 ) { SYSERROR ( \"unable<S2SV_blank>to<S2SV_blank>TIOCSTTY\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } if ( ( new_gid != 0 || options -> namespaces & CLONE_NEWUSER ) ) { if ( setgid ( new_gid ) || setgroups ( 0 , NULL ) ) { SYSERROR ( \"switching<S2SV_blank>to<S2SV_blank>container<S2SV_blank>gid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } } if ( ( new_uid != 0 || options -> namespaces & CLONE_NEWUSER ) && setuid ( new_uid ) ) { SYSERROR ( \"switching<S2SV_blank>to<S2SV_blank>container<S2SV_blank>uid\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } status = 1 ; ret = lxc_write_nointr ( ipc_socket , & status , sizeof ( status ) ) ; if ( ret != sizeof ( status ) ) { <S2SV_StartBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(1)\" ) ; <S2SV_EndBug> shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } expected = 2 ; status = - 1 ; ret = lxc_read_nointr_expect ( ipc_socket , & status , sizeof ( status ) , & expected ) ; if ( ret <= 0 ) { <S2SV_StartBug> ERROR ( \"error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>final<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>(2)\" ) ; <S2SV_EndBug> shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } shutdown ( ipc_socket , SHUT_RDWR ) ; close ( ipc_socket ) ; if ( ( init_ctx -> container && init_ctx -> container -> lxc_conf && init_ctx -> container -> lxc_conf -> no_new_privs ) || ( options -> attach_flags & LXC_ATTACH_NO_NEW_PRIVS ) ) { if ( prctl ( PR_SET_NO_NEW_PRIVS , 1 , 0 , 0 , 0 ) < 0 ) { SYSERROR ( \"PR_SET_NO_NEW_PRIVS<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>set.<S2SV_blank>\" \"Process<S2SV_blank>can<S2SV_blank>use<S2SV_blank>execve()<S2SV_blank>gainable<S2SV_blank>\" \"privileges.\" ) ; <S2SV_StartBug> rexit ( - 1 ) ; <S2SV_EndBug> } INFO ( \"PR_SET_NO_NEW_PRIVS<S2SV_blank>is<S2SV_blank>set.<S2SV_blank>Process<S2SV_blank>cannot<S2SV_blank>use<S2SV_blank>execve()<S2SV_blank>\" <S2SV_StartBug> \"gainable<S2SV_blank>privileges.\" ) ; <S2SV_EndBug> } if ( ( options -> namespaces & CLONE_NEWNS ) && ( options -> attach_flags & LXC_ATTACH_LSM ) && init_ctx -> lsm_label ) { int on_exec ; <S2SV_StartBug> on_exec = options -> attach_flags & LXC_ATTACH_LSM_EXEC ? 1 : 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( lsm_set_label_at ( procfd , on_exec , init_ctx -> lsm_label ) < 0 ) { <S2SV_EndBug> <S2SV_StartBug> rexit ( - 1 ) ; <S2SV_EndBug> } } if ( init_ctx -> container && init_ctx -> container -> lxc_conf && init_ctx -> container -> lxc_conf -> seccomp && ( lxc_seccomp_load ( init_ctx -> container -> lxc_conf ) != 0 ) ) { ERROR ( \"Loading<S2SV_blank>seccomp<S2SV_blank>policy\" ) ; <S2SV_StartBug> rexit ( - 1 ) ; <S2SV_EndBug> } lxc_proc_put_context_info ( init_ctx ) ; if ( options -> stdin_fd >= 0 && options -> stdin_fd != 0 ) dup2 ( options -> stdin_fd , 0 ) ; if ( options -> stdout_fd >= 0 && options -> stdout_fd != 1 ) dup2 ( options -> stdout_fd , 1 ) ; if ( options -> stderr_fd >= 0 && options -> stderr_fd != 2 ) dup2 ( options -> stderr_fd , 2 ) ; if ( options -> stdin_fd > 2 ) close ( options -> stdin_fd ) ; if ( options -> stdout_fd > 2 ) close ( options -> stdout_fd ) ; if ( options -> stderr_fd > 2 ) close ( options -> stderr_fd ) ; for ( fd = 0 ; fd <= 2 ; fd ++ ) { flags = fcntl ( fd , F_GETFL ) ; if ( flags < 0 ) continue ; if ( flags & FD_CLOEXEC ) if ( fcntl ( fd , F_SETFL , flags & ~ FD_CLOEXEC ) < 0 ) SYSERROR ( \"Unable<S2SV_blank>to<S2SV_blank>clear<S2SV_blank>CLOEXEC<S2SV_blank>from<S2SV_blank>fd\" ) ; } <S2SV_StartBug> close ( procfd ) ; <S2SV_EndBug> rexit ( payload -> exec_function ( payload -> exec_payload ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> ipc_socket ; <S2SV_ModEnd> lxc_attach_options_t * options <S2SV_ModStart> int fd ; int lsm_labelfd ; <S2SV_ModStart> { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>notification<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>(0):<S2SV_blank>%s.\" , strerror ( errno ) <S2SV_ModEnd> ) ; shutdown <S2SV_ModStart> { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>notify<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>for<S2SV_blank>initialization<S2SV_blank>(1):<S2SV_blank>%s.\" , strerror ( errno ) <S2SV_ModEnd> ) ; shutdown <S2SV_ModStart> { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>receive<S2SV_blank>message<S2SV_blank>from<S2SV_blank>initial<S2SV_blank>process<S2SV_blank>\" \"that<S2SV_blank>it<S2SV_blank>is<S2SV_blank>done<S2SV_blank>pre-initializing<S2SV_blank>(2):<S2SV_blank>%s\" , strerror ( errno ) ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } <S2SV_ModEnd> if ( ( <S2SV_ModStart> \"privileges.\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; <S2SV_ModStart> ( \"PR_SET_NO_NEW_PRIVS<S2SV_blank>is<S2SV_blank>set.<S2SV_blank>Process<S2SV_blank>cannot<S2SV_blank>use<S2SV_blank>execve()<S2SV_blank>\" \"gainable<S2SV_blank>privileges.\" ) ; } status = 3 ; ret = lxc_write_nointr ( ipc_socket , & status , sizeof ( status ) ) ; if ( ret <= 0 ) { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>to<S2SV_blank>tell<S2SV_blank>parent<S2SV_blank>to<S2SV_blank>set<S2SV_blank>up<S2SV_blank>LSM<S2SV_blank>labels<S2SV_blank>(3):<S2SV_blank>%s.\" , strerror ( errno ) ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 <S2SV_ModStart> int on_exec ; ret = lxc_abstract_unix_recv_fd ( ipc_socket , & lsm_labelfd , NULL , 0 ) ; if ( ret <= 0 ) { ERROR ( \"Error<S2SV_blank>using<S2SV_blank>IPC<S2SV_blank>for<S2SV_blank>parent<S2SV_blank>to<S2SV_blank>tell<S2SV_blank>us<S2SV_blank>LSM<S2SV_blank>label<S2SV_blank>fd<S2SV_blank>(4):<S2SV_blank>%s.\" , strerror ( errno ) ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } <S2SV_ModStart> ( lsm_set_label_at ( lsm_labelfd <S2SV_ModEnd> , on_exec , <S2SV_ModStart> 0 ) { SYSERROR ( \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>LSM<S2SV_blank>label.\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; close ( lsm_labelfd ) ; rexit ( - 1 ) ; } close ( lsm_labelfd ) ; <S2SV_ModEnd> } if ( <S2SV_ModStart> \"Loading<S2SV_blank>seccomp<S2SV_blank>policy\" ) ; shutdown ( ipc_socket , SHUT_RDWR ) ; rexit ( - 1 ) ; } shutdown ( ipc_socket , SHUT_RDWR ) ; close ( ipc_socket ) ; <S2SV_ModEnd> lxc_proc_put_context_info ( init_ctx <S2SV_ModStart> ) ; } <S2SV_ModEnd> rexit ( payload\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int64_t vp9_pick_inter_mode ( VP9_COMP * cpi , MACROBLOCK * x , <S2SV_EndBug> <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> int mi_row , int mi_col , int * returnrate , int64_t * returndistortion , BLOCK_SIZE bsize ) { MACROBLOCKD * xd = & x -> e_mbd ; <S2SV_StartBug> MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> struct macroblock_plane * const p = & x -> plane [ 0 ] ; struct macroblockd_plane * const pd = & xd -> plane [ 0 ] ; <S2SV_StartBug> MB_PREDICTION_MODE this_mode , best_mode = ZEROMV ; <S2SV_EndBug> <S2SV_StartBug> MV_REFERENCE_FRAME ref_frame , best_ref_frame = LAST_FRAME ; <S2SV_EndBug> INTERP_FILTER best_pred_filter = EIGHTTAP ; int_mv frame_mv [ MB_MODE_COUNT ] [ MAX_REF_FRAMES ] ; struct buf_2d yv12_mb [ 4 ] [ MAX_MB_PLANE ] ; static const int flag_list [ 4 ] = { 0 , VP9_LAST_FLAG , VP9_GOLD_FLAG , VP9_ALT_FLAG } ; <S2SV_StartBug> int64_t best_rd = INT64_MAX ; <S2SV_EndBug> int64_t this_rd = INT64_MAX ; int rate = INT_MAX ; int64_t dist = INT64_MAX ; VP9_COMMON * cm = & cpi -> common ; <S2SV_StartBug> int intra_cost_penalty = 20 * vp9_dc_quant ( cm -> base_qindex , cm -> y_dc_delta_q ) ; <S2SV_EndBug> const int64_t inter_mode_thresh = RDCOST ( x -> rdmult , x -> rddiv , <S2SV_StartBug> intra_cost_penalty , 0 ) ; <S2SV_EndBug> const int64_t intra_mode_cost = 50 ; unsigned char segment_id = mbmi -> segment_id ; <S2SV_StartBug> const int * const rd_threshes = cpi -> rd_threshes [ segment_id ] [ bsize ] ; <S2SV_EndBug> <S2SV_StartBug> const int * const rd_thresh_freq_fact = cpi -> rd_thresh_freq_fact [ bsize ] ; <S2SV_EndBug> int mode_idx [ MB_MODE_COUNT ] = { 0 } ; <S2SV_StartBug> INTERP_FILTER filter_ref = SWITCHABLE ; <S2SV_EndBug> x -> skip_encode = cpi -> sf . skip_encode_frame && x -> q_index < QIDX_SKIP_THRESH ; x -> skip = 0 ; if ( ! x -> in_active_map ) x -> skip = 1 ; * returnrate = INT_MAX ; * returndistortion = INT64_MAX ; vpx_memset ( mbmi , 0 , sizeof ( MB_MODE_INFO ) ) ; mbmi -> sb_type = bsize ; mbmi -> ref_frame [ 0 ] = NONE ; mbmi -> ref_frame [ 1 ] = NONE ; mbmi -> tx_size = MIN ( max_txsize_lookup [ bsize ] , tx_mode_to_biggest_tx_size [ cpi -> common . tx_mode ] ) ; mbmi -> interp_filter = cpi -> common . interp_filter == SWITCHABLE ? <S2SV_StartBug> EIGHTTAP : cpi -> common . interp_filter ; <S2SV_EndBug> mbmi -> skip = 0 ; <S2SV_StartBug> mbmi -> segment_id = segment_id ; <S2SV_EndBug> for ( ref_frame = LAST_FRAME ; ref_frame <= LAST_FRAME ; ++ ref_frame ) { x -> pred_mv_sad [ ref_frame ] = INT_MAX ; if ( cpi -> ref_frame_flags & flag_list [ ref_frame ] ) { vp9_setup_buffer_inter ( cpi , x , tile , ref_frame , bsize , mi_row , mi_col , frame_mv [ NEARESTMV ] , frame_mv [ NEARMV ] , yv12_mb ) ; } frame_mv [ NEWMV ] [ ref_frame ] . as_int = INVALID_MV ; frame_mv [ ZEROMV ] [ ref_frame ] . as_int = 0 ; } if ( xd -> up_available ) filter_ref = xd -> mi [ - xd -> mi_stride ] -> mbmi . interp_filter ; else if ( xd -> left_available ) filter_ref = xd -> mi [ - 1 ] -> mbmi . interp_filter ; <S2SV_StartBug> for ( ref_frame = LAST_FRAME ; ref_frame <= LAST_FRAME ; ++ ref_frame ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! ( cpi -> ref_frame_flags & flag_list [ ref_frame ] ) ) <S2SV_EndBug> continue ; <S2SV_StartBug> xd -> plane [ 0 ] . pre [ 0 ] = yv12_mb [ ref_frame ] [ 0 ] ; <S2SV_EndBug> clamp_mv2 ( & frame_mv [ NEARESTMV ] [ ref_frame ] . as_mv , xd ) ; clamp_mv2 ( & frame_mv [ NEARMV ] [ ref_frame ] . as_mv , xd ) ; mbmi -> ref_frame [ 0 ] = ref_frame ; <S2SV_StartBug> if ( ref_frame == LAST_FRAME ) { <S2SV_EndBug> mode_idx [ NEARESTMV ] = THR_NEARESTMV ; mode_idx [ NEARMV ] = THR_NEARMV ; mode_idx [ ZEROMV ] = THR_ZEROMV ; mode_idx [ NEWMV ] = THR_NEWMV ; } for ( this_mode = NEARESTMV ; this_mode <= NEWMV ; ++ this_mode ) { int rate_mv = 0 ; if ( cpi -> sf . disable_inter_mode_mask [ bsize ] & <S2SV_StartBug> ( 1 << INTER_OFFSET ( this_mode ) ) ) <S2SV_EndBug> continue ; if ( best_rd < ( ( int64_t ) rd_threshes [ mode_idx [ this_mode ] ] * rd_thresh_freq_fact [ this_mode ] >> 5 ) || rd_threshes [ mode_idx [ this_mode ] ] == INT_MAX ) continue ; if ( this_mode == NEWMV ) { <S2SV_StartBug> int rate_mode = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( this_rd < ( int64_t ) ( 1 << num_pels_log2_lookup [ bsize ] ) ) <S2SV_EndBug> continue ; full_pixel_motion_search ( cpi , x , tile , bsize , mi_row , mi_col , <S2SV_StartBug> & frame_mv [ NEWMV ] [ ref_frame ] , & rate_mv ) ; <S2SV_EndBug> <S2SV_StartBug> if ( frame_mv [ NEWMV ] [ ref_frame ] . as_int == INVALID_MV ) <S2SV_EndBug> continue ; rate_mode = x -> inter_mode_cost [ mbmi -> mode_context [ ref_frame ] ] [ INTER_OFFSET ( this_mode ) ] ; if ( RDCOST ( x -> rdmult , x -> rddiv , rate_mv + rate_mode , 0 ) > best_rd ) continue ; sub_pixel_motion_search ( cpi , x , tile , bsize , mi_row , mi_col , & frame_mv [ NEWMV ] [ ref_frame ] . as_mv ) ; } <S2SV_StartBug> if ( this_mode != NEARESTMV ) <S2SV_EndBug> if ( frame_mv [ this_mode ] [ ref_frame ] . as_int == frame_mv [ NEARESTMV ] [ ref_frame ] . as_int ) continue ; mbmi -> mode = this_mode ; <S2SV_StartBug> mbmi -> mv [ 0 ] . as_int = frame_mv [ this_mode ] [ ref_frame ] . as_int ; <S2SV_EndBug> if ( ( this_mode == NEWMV || filter_ref == SWITCHABLE ) && <S2SV_StartBug> ( ( mbmi -> mv [ 0 ] . as_mv . row & 0x07 ) != 0 || <S2SV_EndBug> ( mbmi -> mv [ 0 ] . as_mv . col & 0x07 ) != 0 ) ) { int64_t tmp_rdcost1 = INT64_MAX ; int64_t tmp_rdcost2 = INT64_MAX ; int64_t tmp_rdcost3 = INT64_MAX ; int pf_rate [ 3 ] ; int64_t pf_dist [ 3 ] ; <S2SV_StartBug> mbmi -> interp_filter = EIGHTTAP ; <S2SV_EndBug> vp9_build_inter_predictors_sby ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> model_rd_for_sb_y ( cpi , bsize , x , xd , & pf_rate [ EIGHTTAP ] , <S2SV_EndBug> <S2SV_StartBug> & pf_dist [ EIGHTTAP ] ) ; <S2SV_EndBug> tmp_rdcost1 = RDCOST ( x -> rdmult , x -> rddiv , <S2SV_StartBug> vp9_get_switchable_rate ( x ) + pf_rate [ EIGHTTAP ] , <S2SV_EndBug> pf_dist [ EIGHTTAP ] ) ; mbmi -> interp_filter = EIGHTTAP_SHARP ; vp9_build_inter_predictors_sby ( xd , mi_row , mi_col , bsize ) ; model_rd_for_sb_y ( cpi , bsize , x , xd , & pf_rate [ EIGHTTAP_SHARP ] , & pf_dist [ EIGHTTAP_SHARP ] ) ; tmp_rdcost2 = RDCOST ( x -> rdmult , x -> rddiv , vp9_get_switchable_rate ( x ) + pf_rate [ EIGHTTAP_SHARP ] , pf_dist [ EIGHTTAP_SHARP ] ) ; mbmi -> interp_filter = EIGHTTAP_SMOOTH ; vp9_build_inter_predictors_sby ( xd , mi_row , mi_col , bsize ) ; model_rd_for_sb_y ( cpi , bsize , x , xd , & pf_rate [ EIGHTTAP_SMOOTH ] , & pf_dist [ EIGHTTAP_SMOOTH ] ) ; tmp_rdcost3 = RDCOST ( x -> rdmult , x -> rddiv , vp9_get_switchable_rate ( x ) + pf_rate [ EIGHTTAP_SMOOTH ] , pf_dist [ EIGHTTAP_SMOOTH ] ) ; if ( tmp_rdcost2 < tmp_rdcost1 ) { if ( tmp_rdcost2 < tmp_rdcost3 ) mbmi -> interp_filter = EIGHTTAP_SHARP ; else mbmi -> interp_filter = EIGHTTAP_SMOOTH ; } else { if ( tmp_rdcost1 < tmp_rdcost3 ) mbmi -> interp_filter = EIGHTTAP ; else mbmi -> interp_filter = EIGHTTAP_SMOOTH ; } rate = pf_rate [ mbmi -> interp_filter ] ; dist = pf_dist [ mbmi -> interp_filter ] ; } else { mbmi -> interp_filter = ( filter_ref == SWITCHABLE ) ? EIGHTTAP : filter_ref ; vp9_build_inter_predictors_sby ( xd , mi_row , mi_col , bsize ) ; <S2SV_StartBug> model_rd_for_sb_y ( cpi , bsize , x , xd , & rate , & dist ) ; <S2SV_EndBug> } rate += rate_mv ; <S2SV_StartBug> rate += x -> inter_mode_cost [ mbmi -> mode_context [ ref_frame ] ] <S2SV_EndBug> [ INTER_OFFSET ( this_mode ) ] ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate , dist ) ; if ( this_rd < best_rd ) { best_rd = this_rd ; * returnrate = rate ; * returndistortion = dist ; best_mode = this_mode ; best_pred_filter = mbmi -> interp_filter ; <S2SV_StartBug> best_ref_frame = ref_frame ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> } } mbmi -> mode = best_mode ; mbmi -> interp_filter = best_pred_filter ; <S2SV_StartBug> mbmi -> ref_frame [ 0 ] = best_ref_frame ; <S2SV_EndBug> mbmi -> mv [ 0 ] . as_int = frame_mv [ best_mode ] [ best_ref_frame ] . as_int ; xd -> mi [ 0 ] -> bmi [ 0 ] . as_mv [ 0 ] . as_int = mbmi -> mv [ 0 ] . as_int ; <S2SV_StartBug> if ( best_rd > inter_mode_thresh ) { <S2SV_EndBug> for ( this_mode = DC_PRED ; this_mode <= DC_PRED ; ++ this_mode ) { <S2SV_StartBug> vp9_predict_intra_block ( xd , 0 , b_width_log2 ( bsize ) , <S2SV_EndBug> mbmi -> tx_size , this_mode , & p -> src . buf [ 0 ] , p -> src . stride , & pd -> dst . buf [ 0 ] , pd -> dst . stride , 0 , 0 , 0 ) ; model_rd_for_sb_y ( cpi , bsize , x , xd , & rate , & dist ) ; rate += x -> mbmode_cost [ this_mode ] ; <S2SV_StartBug> rate += intra_cost_penalty ; <S2SV_EndBug> <S2SV_StartBug> this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate , dist ) ; <S2SV_EndBug> <S2SV_StartBug> if ( this_rd + intra_mode_cost < best_rd ) { <S2SV_EndBug> best_rd = this_rd ; * returnrate = rate ; * returndistortion = dist ; mbmi -> mode = this_mode ; mbmi -> ref_frame [ 0 ] = INTRA_FRAME ; mbmi -> uv_mode = this_mode ; mbmi -> mv [ 0 ] . as_int = INVALID_MV ; } } } return INT64_MAX ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> void <S2SV_ModEnd> vp9_pick_inter_mode ( VP9_COMP <S2SV_ModStart> * x , TileDataEnc * tile_data , int mi_row , int mi_col , RD_COST * rd_cost , BLOCK_SIZE bsize , PICK_MODE_CONTEXT * ctx ) { VP9_COMMON * const cm = & cpi -> common ; SPEED_FEATURES * const sf = & cpi -> sf ; <S2SV_ModEnd> TileInfo * const <S2SV_ModStart> TileInfo * const tile_info = & tile_data -> tile_info ; MACROBLOCKD * const <S2SV_ModEnd> xd = & <S2SV_ModStart> ; MB_MODE_INFO * const <S2SV_ModStart> ] -> mbmi <S2SV_ModEnd> ; struct macroblockd_plane <S2SV_ModStart> 0 ] ; PREDICTION_MODE <S2SV_ModEnd> best_mode = ZEROMV <S2SV_ModStart> best_ref_frame = LAST_FRAME ; MV_REFERENCE_FRAME usable_ref_frame ; TX_SIZE best_tx_size = TX_SIZES <S2SV_ModStart> VP9_ALT_FLAG } ; RD_COST this_rdc , best_rdc ; uint8_t skip_txfm = SKIP_TXFM_NONE , best_mode_skip_txfm = SKIP_TXFM_NONE ; unsigned int var_y = UINT_MAX ; unsigned int sse_y = UINT_MAX ; const int reduction_fac = ( bsize <= BLOCK_16X16 ) ? ( ( bsize <= BLOCK_8X8 ) ? 4 : 2 ) : 0 ; const <S2SV_ModEnd> int intra_cost_penalty = <S2SV_ModStart> int intra_cost_penalty = vp9_get_intra_cost_penalty ( <S2SV_ModEnd> cm -> base_qindex <S2SV_ModStart> cm -> y_dc_delta_q , cm -> bit_depth ) >> reduction_fac <S2SV_ModEnd> ; const int64_t <S2SV_ModStart> , 0 ) <S2SV_ModEnd> ; const int <S2SV_ModStart> = cpi -> rd . threshes [ mbmi -> <S2SV_ModEnd> segment_id ] [ <S2SV_ModStart> const rd_thresh_freq_fact = tile_data -> thresh_freq_fact <S2SV_ModEnd> [ bsize ] <S2SV_ModStart> [ bsize ] <S2SV_ModEnd> ; INTERP_FILTER filter_ref <S2SV_ModStart> ; INTERP_FILTER filter_ref ; const int bsl = mi_width_log2_lookup [ bsize ] ; const int pred_filter_search = cm -> <S2SV_ModEnd> interp_filter == SWITCHABLE <S2SV_ModStart> == SWITCHABLE ? ( ( ( mi_row + mi_col ) >> bsl ) + get_chessboard_index ( cm -> current_video_frame ) ) & 0x1 : 0 ; int const_motion [ MAX_REF_FRAMES ] = { 0 } ; const int bh = num_4x4_blocks_high_lookup [ bsize ] << 2 ; const int bw = num_4x4_blocks_wide_lookup [ bsize ] << 2 ; PRED_BUFFER tmp [ 4 ] ; DECLARE_ALIGNED ( 16 , uint8_t , pred_buf [ 3 * 64 * 64 ] ) ; # if CONFIG_VP9_HIGHBITDEPTH DECLARE_ALIGNED ( 16 , uint16_t , pred_buf_16 [ 3 * 64 * 64 ] ) ; # endif struct buf_2d orig_dst = pd -> dst ; PRED_BUFFER * best_pred = NULL ; PRED_BUFFER * this_mode_pred = NULL ; const int pixels_in_block = bh * bw ; int reuse_inter_pred = cpi -> sf . reuse_inter_pred_sby && ctx -> pred_pixel_ready ; int ref_frame_skip_mask = 0 ; int idx ; int best_pred_sad = INT_MAX ; int best_early_term = 0 ; int ref_frame_cost [ MAX_REF_FRAMES ] ; init_ref_frame_cost ( cm , xd , ref_frame_cost ) ; if ( reuse_inter_pred ) { int i ; for ( i = 0 ; i < 3 ; i ++ ) { # if CONFIG_VP9_HIGHBITDEPTH if ( cm -> use_highbitdepth ) tmp [ i ] . data = CONVERT_TO_BYTEPTR ( & pred_buf_16 [ pixels_in_block * i ] ) ; else tmp [ i ] . data = & pred_buf [ pixels_in_block * i ] ; # else tmp [ i ] . data = & pred_buf [ pixels_in_block * i ] ; # endif tmp [ i ] . stride = bw ; tmp [ i ] . in_use = 0 ; } tmp [ 3 ] . data = pd -> dst . buf ; tmp [ 3 ] . stride = pd -> dst . stride ; tmp [ 3 ] . in_use = 0 ; } x -> skip_encode = cpi -> sf . skip_encode_frame && x -> q_index < QIDX_SKIP_THRESH ; x <S2SV_ModEnd> -> skip = <S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( xd <S2SV_ModStart> . interp_filter ; else filter_ref = cm -> interp_filter ; vp9_rd_cost_reset ( & best_rdc ) ; vp9_rd_cost_reset ( rd_cost ) ; mbmi -> sb_type = bsize ; mbmi -> ref_frame [ 0 ] = NONE ; mbmi -> ref_frame [ 1 ] = NONE ; mbmi -> tx_size = MIN ( max_txsize_lookup [ bsize ] , tx_mode_to_biggest_tx_size [ cm -> tx_mode ] ) ; # if CONFIG_VP9_TEMPORAL_DENOISING vp9_denoiser_reset_frame_stats ( ctx ) ; # endif if ( cpi -> rc . frames_since_golden == 0 && ! cpi -> use_svc ) { usable_ref_frame = LAST_FRAME ; } else { usable_ref_frame = GOLDEN_FRAME ; } <S2SV_ModStart> ; ref_frame <= usable_ref_frame <S2SV_ModEnd> ; ++ ref_frame <S2SV_ModStart> ref_frame ) { const YV12_BUFFER_CONFIG * yv12 = get_ref_frame_buffer ( cpi , ref_frame ) ; x -> pred_mv_sad [ ref_frame ] = INT_MAX ; frame_mv [ NEWMV ] [ ref_frame ] . as_int = INVALID_MV ; frame_mv [ ZEROMV ] [ ref_frame ] . as_int = 0 ; if ( ( cpi -> ref_frame_flags & flag_list [ ref_frame ] ) && ( yv12 != NULL ) ) { int_mv * const candidates = x -> mbmi_ext -> ref_mvs [ ref_frame ] ; const struct scale_factors * const sf = & cm -> frame_refs [ ref_frame - 1 ] . sf ; vp9_setup_pred_block ( xd , yv12_mb [ ref_frame ] , yv12 , mi_row , mi_col , sf , sf ) ; if ( cm -> use_prev_frame_mvs ) vp9_find_mv_refs ( cm , xd , xd -> mi [ 0 ] , ref_frame , candidates , mi_row , mi_col , NULL , NULL , x -> mbmi_ext -> mode_context ) ; else const_motion [ ref_frame ] = mv_refs_rt ( cm , x , xd , tile_info , xd -> mi [ 0 ] , ref_frame , candidates , mi_row , mi_col ) ; vp9_find_best_ref_mvs ( xd , cm -> allow_high_precision_mv , candidates , & frame_mv [ NEARESTMV ] [ ref_frame ] , & frame_mv [ NEARMV ] [ ref_frame ] ) ; <S2SV_ModStart> if ( ! vp9_is_scaled ( sf ) && bsize >= BLOCK_8X8 ) vp9_mv_pred ( cpi , x , yv12_mb [ ref_frame ] [ 0 ] . buf , yv12 -> y_stride , ref_frame , bsize ) ; } else { ref_frame_skip_mask |= ( 1 << ref_frame ) ; } } for ( idx = 0 ; idx < RT_INTER_MODES ; ++ idx ) { int rate_mv = 0 ; int mode_rd_thresh ; int mode_index ; int i ; int64_t this_sse ; int is_skippable ; int this_early_term = 0 ; PREDICTION_MODE this_mode = ref_mode_set [ idx ] . pred_mode ; if ( cpi -> use_svc ) this_mode = ref_mode_set_svc [ idx ] . pred_mode ; if ( ! ( cpi -> sf . inter_mode_mask [ bsize ] & ( 1 << this_mode ) ) ) continue ; ref_frame = ref_mode_set [ idx ] . ref_frame ; if ( cpi -> use_svc ) ref_frame = ref_mode_set_svc [ idx ] . ref_frame ; if ( ! <S2SV_ModStart> ) continue ; if ( const_motion [ ref_frame ] && this_mode == NEARMV ) continue ; i = <S2SV_ModEnd> ( ref_frame == <S2SV_ModStart> == LAST_FRAME ) ? GOLDEN_FRAME : LAST_FRAME ; if ( ( cpi -> ref_frame_flags & flag_list [ i ] ) && sf -> reference_masking ) if ( x -> pred_mv_sad [ ref_frame ] > ( x -> pred_mv_sad [ i ] << 1 ) ) ref_frame_skip_mask |= <S2SV_ModEnd> ( 1 << <S2SV_ModStart> ( 1 << ref_frame ) ; if ( ref_frame_skip_mask & ( 1 << ref_frame ) ) continue ; for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) xd -> plane [ i ] . pre [ 0 ] = yv12_mb [ ref_frame ] [ i ] ; mbmi -> ref_frame [ 0 ] = ref_frame ; set_ref_ptrs ( cm , xd , ref_frame , NONE ) ; mode_index = mode_idx [ ref_frame ] [ <S2SV_ModStart> ( this_mode ) ] ; mode_rd_thresh = best_mode_skip_txfm ? rd_threshes [ mode_index ] << 1 : rd_threshes [ mode_index ] ; if ( rd_less_than_thresh ( best_rdc . rdcost , mode_rd_thresh , rd_thresh_freq_fact [ mode_index ] ) <S2SV_ModEnd> ) continue ; <S2SV_ModStart> NEWMV ) { if ( ref_frame > LAST_FRAME && ! cpi -> use_svc ) { int tmp_sad ; int dis , cost_list [ 5 ] ; if ( bsize < BLOCK_16X16 ) continue ; tmp_sad = vp9_int_pro_motion_estimation ( cpi , x , bsize , mi_row , mi_col ) ; if ( tmp_sad > x -> pred_mv_sad [ LAST_FRAME ] ) continue ; if ( tmp_sad + ( num_pels_log2_lookup [ bsize ] << 4 ) > best_pred_sad ) continue ; frame_mv [ NEWMV ] [ ref_frame ] . as_int = mbmi -> mv [ 0 ] . as_int ; rate_mv = vp9_mv_bit_cost ( & frame_mv [ NEWMV ] [ ref_frame ] . as_mv , & x -> mbmi_ext -> ref_mvs [ ref_frame ] [ 0 ] . as_mv , x -> nmvjointcost , x -> mvcost , MV_COST_WEIGHT ) ; frame_mv [ NEWMV ] [ ref_frame ] . as_mv . row >>= 3 ; frame_mv [ NEWMV ] [ ref_frame ] . as_mv . col >>= 3 ; cpi -> find_fractional_mv_step ( x , & frame_mv [ NEWMV ] [ ref_frame ] . as_mv , & x -> mbmi_ext -> ref_mvs [ ref_frame ] [ 0 ] . as_mv , cpi -> common . allow_high_precision_mv , x -> errorperbit , & cpi -> fn_ptr <S2SV_ModEnd> [ bsize ] <S2SV_ModStart> [ bsize ] , cpi -> sf . mv . subpel_force_stop , cpi -> sf . mv . subpel_iters_per_step , cond_cost_list ( cpi , cost_list ) , x -> nmvjointcost , x -> mvcost , & dis , & x -> pred_sse [ ref_frame ] , NULL , 0 , 0 ) ; } else if ( ! combined_motion_search ( cpi , x , bsize , mi_row , mi_col , & frame_mv [ NEWMV ] [ ref_frame ] , & rate_mv , best_rdc . rdcost ) ) { continue ; } } if ( this_mode == NEWMV && ref_frame == LAST_FRAME && frame_mv [ NEWMV ] [ LAST_FRAME ] . as_int != INVALID_MV ) { const int pre_stride = xd -> plane [ 0 ] . pre [ 0 ] . stride ; const uint8_t * const pre_buf = xd -> plane [ 0 ] . pre [ 0 ] . buf + ( frame_mv [ NEWMV ] [ LAST_FRAME ] . as_mv . row >> 3 ) * pre_stride + ( frame_mv [ NEWMV ] [ LAST_FRAME ] . as_mv . col >> 3 ) ; best_pred_sad = cpi -> fn_ptr [ bsize ] . sdf ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , pre_buf , pre_stride ) ; x -> pred_mv_sad [ LAST_FRAME ] = best_pred_sad ; } if ( cpi -> use_svc ) { if ( this_mode == NEWMV && ref_frame == GOLDEN_FRAME && <S2SV_ModEnd> frame_mv [ NEWMV <S2SV_ModStart> NEWMV ] [ GOLDEN_FRAME ] . as_int != INVALID_MV ) { const int pre_stride = xd -> plane [ 0 ] . pre [ 0 ] . stride ; const uint8_t * const pre_buf = xd -> plane [ 0 ] . pre [ 0 ] . buf + <S2SV_ModEnd> ( frame_mv [ <S2SV_ModStart> NEWMV ] [ GOLDEN_FRAME ] . as_mv . row >> 3 ) * pre_stride + ( frame_mv [ NEWMV ] [ GOLDEN_FRAME ] . as_mv . col >> 3 ) ; best_pred_sad = cpi -> fn_ptr [ bsize ] . sdf ( x -> plane [ 0 ] . src . buf , x -> plane [ 0 ] . src . stride , pre_buf , pre_stride ) ; x -> pred_mv_sad [ GOLDEN_FRAME ] = best_pred_sad ; } <S2SV_ModEnd> } if ( <S2SV_ModStart> this_mode != NEARESTMV && <S2SV_ModEnd> frame_mv [ this_mode <S2SV_ModStart> . as_int ; if ( reuse_inter_pred ) { if ( ! this_mode_pred ) { this_mode_pred = & tmp [ 3 ] ; } else { this_mode_pred = & tmp [ get_pred_buffer ( tmp , 3 ) ] ; pd -> dst . buf = this_mode_pred -> data ; pd -> dst . stride = bw ; } } <S2SV_ModStart> SWITCHABLE ) && pred_filter_search && ( ref_frame == LAST_FRAME || ( ref_frame == GOLDEN_FRAME && cpi -> use_svc ) ) && ( <S2SV_ModStart> as_mv . row | mbmi -> mv [ 0 ] . as_mv . col ) <S2SV_ModStart> ) != 0 ) ) { <S2SV_ModEnd> int pf_rate [ <S2SV_ModStart> 3 ] ; unsigned int pf_var [ 3 ] ; unsigned int pf_sse [ 3 ] ; TX_SIZE pf_tx_size [ 3 ] ; int64_t best_cost = INT64_MAX ; INTERP_FILTER best_filter = SWITCHABLE , filter ; PRED_BUFFER * current_pred = this_mode_pred ; for ( filter = EIGHTTAP ; filter <= EIGHTTAP_SMOOTH ; ++ filter ) { int64_t cost ; <S2SV_ModStart> -> interp_filter = filter <S2SV_ModEnd> ; vp9_build_inter_predictors_sby ( <S2SV_ModStart> & pf_rate [ filter ] , <S2SV_ModEnd> & pf_dist [ <S2SV_ModStart> & pf_dist [ filter ] , & pf_var [ filter ] , & pf_sse [ filter ] ) ; pf_rate [ filter ] += vp9_get_switchable_rate ( cpi , xd ) ; cost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , pf_rate [ filter ] , pf_dist [ filter ] ) ; pf_tx_size [ filter ] = mbmi -> tx_size ; if ( cost < best_cost ) { best_filter = filter ; best_cost = cost ; skip_txfm = x -> skip_txfm [ 0 ] ; if ( reuse_inter_pred ) { if ( this_mode_pred != current_pred ) { free_pred_buffer ( this_mode_pred ) ; this_mode_pred = current_pred ; } if ( filter < EIGHTTAP_SHARP ) { current_pred = & tmp [ get_pred_buffer ( tmp , 3 ) ] ; pd -> dst . buf = current_pred -> data ; pd -> dst . stride = bw ; } } } } if ( reuse_inter_pred && this_mode_pred != current_pred ) free_pred_buffer ( current_pred ) ; mbmi -> interp_filter = best_filter ; mbmi -> tx_size = pf_tx_size [ best_filter ] ; this_rdc . rate = pf_rate [ best_filter ] ; this_rdc . dist = pf_dist [ best_filter ] ; var_y = pf_var [ best_filter ] ; sse_y = pf_sse [ best_filter ] ; x -> skip_txfm [ 0 ] = skip_txfm ; if ( reuse_inter_pred ) { pd -> dst . buf = this_mode_pred -> data ; pd -> dst . stride = this_mode_pred -> stride ; } <S2SV_ModEnd> } else { <S2SV_ModStart> bsize ) ; if ( bsize > BLOCK_32X32 && ! cyclic_refresh_segment_id_boosted ( xd -> mi [ 0 ] -> mbmi . segment_id ) && cm -> base_qindex ) { model_rd_for_sb_y_large ( cpi , bsize , x , xd , & this_rdc . rate , & this_rdc . dist , & var_y , & sse_y , mi_row , mi_col , & this_early_term ) ; } else { <S2SV_ModStart> xd , & this_rdc . <S2SV_ModStart> rate , & this_rdc . dist , & var_y , & sse_y ) ; } } if ( ! this_early_term ) { this_sse = ( int64_t ) sse_y ; block_yrd ( cpi , x , & this_rdc . rate , & this_rdc . dist , & is_skippable , & this_sse , 0 , bsize , MIN ( mbmi -> tx_size , TX_16X16 ) ) ; x -> skip_txfm [ 0 ] = is_skippable ; if ( is_skippable ) { this_rdc . rate = vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 1 ) ; } else { if ( RDCOST ( x -> rdmult , x -> rddiv , this_rdc . rate , this_rdc . dist ) < RDCOST ( x -> rdmult , x -> rddiv , 0 , this_sse ) ) { this_rdc . rate += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 0 ) ; } else { this_rdc . rate = vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 1 ) ; this_rdc . dist = this_sse ; x -> skip_txfm [ 0 ] = SKIP_TXFM_AC_DC ; } } if ( cm -> interp_filter == SWITCHABLE ) { if ( ( mbmi -> mv [ 0 ] . as_mv . row | mbmi -> mv [ 0 ] . as_mv . col ) & 0x07 ) this_rdc . rate += vp9_get_switchable_rate ( cpi , xd ) ; } } else { this_rdc . rate += cm -> interp_filter == SWITCHABLE ? vp9_get_switchable_rate ( cpi , xd ) : 0 ; this_rdc . rate += vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 1 ) ; } if ( x -> color_sensitivity [ 0 ] || x -> color_sensitivity [ 1 ] ) { int uv_rate = 0 ; int64_t uv_dist = 0 ; if ( x -> color_sensitivity [ 0 ] ) vp9_build_inter_predictors_sbp ( xd , mi_row , mi_col , bsize , 1 ) ; if ( x -> color_sensitivity [ 1 ] ) vp9_build_inter_predictors_sbp ( xd , mi_row , mi_col , bsize , 2 ) ; model_rd_for_sb_uv ( cpi , bsize , x , xd , & uv_rate , & uv_dist , & var_y , & sse_y ) ; this_rdc . rate += uv_rate ; this_rdc . dist += uv_dist ; } this_rdc . <S2SV_ModEnd> rate += rate_mv <S2SV_ModStart> += rate_mv ; this_rdc . rate += cpi <S2SV_ModEnd> -> inter_mode_cost [ <S2SV_ModStart> -> inter_mode_cost [ x -> mbmi_ext -> mode_context [ ref_frame ] ] [ INTER_OFFSET ( this_mode ) ] ; this_rdc . rate += ref_frame_cost [ ref_frame ] ; this_rdc . rdcost = RDCOST ( x -> rdmult , x -> rddiv , this_rdc . rate , this_rdc . dist ) ; if ( cpi -> allow_encode_breakout ) { encode_breakout_test ( cpi , x , bsize , mi_row , mi_col , ref_frame , this_mode , var_y , sse_y , yv12_mb , & this_rdc . rate , & this_rdc . dist ) ; if ( x -> skip ) { this_rdc . rate += rate_mv ; this_rdc . rdcost = RDCOST ( x -> rdmult , x -> rddiv , this_rdc . rate , this_rdc . dist ) ; } } # if CONFIG_VP9_TEMPORAL_DENOISING if ( cpi -> oxcf . noise_sensitivity > 0 ) vp9_denoiser_update_frame_stats ( mbmi , sse_y , this_mode , ctx ) ; # else ( void ) ctx ; # endif if ( this_rdc . rdcost < best_rdc . rdcost || x -> skip ) { best_rdc = this_rdc <S2SV_ModEnd> ; best_mode = <S2SV_ModStart> -> interp_filter ; best_tx_size = mbmi -> tx_size ; <S2SV_ModStart> = ref_frame ; best_mode_skip_txfm = x -> skip_txfm [ 0 ] ; best_early_term = this_early_term ; if ( reuse_inter_pred ) { free_pred_buffer ( best_pred ) ; best_pred = this_mode_pred ; } } else { if ( reuse_inter_pred ) free_pred_buffer ( this_mode_pred ) ; } if ( x -> skip ) break ; if ( best_early_term && idx > 0 ) { x -> skip = 1 ; break ; <S2SV_ModEnd> } } mbmi <S2SV_ModStart> ; mbmi -> tx_size = best_tx_size ; mbmi -> <S2SV_ModStart> . as_int ; x -> skip_txfm [ 0 ] = best_mode_skip_txfm ; if ( best_rdc . rdcost == INT64_MAX || ( ! x -> skip && best_rdc . rdcost > inter_mode_thresh && bsize <= cpi -> sf . max_intra_bsize ) ) { struct estimate_block_intra_args args = { cpi , x , DC_PRED , 0 , 0 } ; const TX_SIZE intra_tx_size = MIN ( max_txsize_lookup [ bsize ] , tx_mode_to_biggest_tx_size [ cpi -> common . tx_mode ] ) ; int i ; TX_SIZE best_intra_tx_size = TX_SIZES ; if ( reuse_inter_pred && best_pred != NULL ) { if ( best_pred -> data == orig_dst . buf ) { this_mode_pred = & tmp [ get_pred_buffer ( tmp , 3 ) ] ; # if CONFIG_VP9_HIGHBITDEPTH if ( cm -> use_highbitdepth ) vpx_highbd_convolve_copy ( best_pred -> data , best_pred -> stride , this_mode_pred -> data , this_mode_pred -> stride , NULL , 0 , NULL , 0 , bw , bh , xd -> bd ) ; else vpx_convolve_copy ( best_pred -> data , best_pred -> stride , this_mode_pred -> data , this_mode_pred -> stride , NULL , 0 , NULL , 0 , bw , bh ) ; # else vpx_convolve_copy ( best_pred -> data , best_pred -> stride , this_mode_pred -> data , this_mode_pred -> stride , NULL , 0 , NULL , 0 , bw , bh ) ; # endif best_pred = this_mode_pred ; } } pd -> dst = orig_dst ; for ( i = 0 ; i < 4 ; ++ i ) { const PREDICTION_MODE this_mode = intra_mode_list [ i ] ; THR_MODES mode_index = mode_idx [ INTRA_FRAME ] [ mode_offset ( this_mode ) ] ; int mode_rd_thresh = rd_threshes [ mode_index ] ; if ( ! ( ( 1 << this_mode ) & cpi -> sf . intra_y_mode_bsize_mask [ bsize ] ) ) continue ; if ( rd_less_than_thresh ( best_rdc . rdcost , mode_rd_thresh , rd_thresh_freq_fact [ mode_index ] ) ) continue ; mbmi -> mode = this_mode ; mbmi -> ref_frame [ 0 ] = INTRA_FRAME ; args . mode = this_mode ; args . rate = 0 ; args . dist = 0 ; mbmi -> tx_size = intra_tx_size ; vp9_foreach_transformed_block_in_plane <S2SV_ModEnd> ( xd , <S2SV_ModStart> ( xd , bsize , 0 , estimate_block_intra , & args ) ; this_rdc . rate = args . rate ; this_rdc . dist = args . dist ; this_rdc . rate += cpi <S2SV_ModEnd> -> mbmode_cost [ <S2SV_ModStart> this_mode ] ; this_rdc . rate += ref_frame_cost [ INTRA_FRAME ] ; this_rdc . <S2SV_ModStart> += intra_cost_penalty ; this_rdc . rdcost <S2SV_ModEnd> = RDCOST ( <S2SV_ModStart> -> rddiv , this_rdc . rate , this_rdc . <S2SV_ModEnd> dist ) ; <S2SV_ModStart> ; if ( this_rdc . rdcost < best_rdc . rdcost ) { best_rdc = this_rdc ; best_mode = this_mode ; best_intra_tx_size = mbmi -> tx_size ; best_ref_frame = INTRA_FRAME ; mbmi -> uv_mode = this_mode ; mbmi -> mv [ 0 ] . as_int = INVALID_MV ; best_mode_skip_txfm = x -> skip_txfm [ 0 ] ; } } if ( best_ref_frame != INTRA_FRAME ) { mbmi -> tx_size = best_tx_size ; } else { mbmi -> tx_size = best_intra_tx_size ; } } pd -> dst = orig_dst ; mbmi -> mode = best_mode ; mbmi -> ref_frame [ 0 ] = best_ref_frame ; x -> skip_txfm [ 0 ] = best_mode_skip_txfm ; if ( reuse_inter_pred && best_pred != NULL ) { if ( best_pred -> data != orig_dst . buf && is_inter_mode ( mbmi -> mode ) ) { # if CONFIG_VP9_HIGHBITDEPTH if ( cm -> use_highbitdepth ) vpx_highbd_convolve_copy ( best_pred -> data , best_pred -> stride , pd -> dst . buf , pd -> dst . stride , NULL , 0 , NULL , 0 , bw , bh , xd -> bd ) ; else vpx_convolve_copy ( best_pred -> data , best_pred -> stride , pd -> dst . buf , pd -> dst . stride , NULL , 0 , NULL , 0 , bw , bh ) ; # else vpx_convolve_copy ( best_pred -> data , best_pred -> stride , pd -> dst . buf , pd -> dst . stride , NULL , 0 , NULL , 0 , bw , bh ) ; # endif } } if ( cpi -> sf . adaptive_rd_thresh ) { THR_MODES best_mode_idx = mode_idx [ best_ref_frame ] [ mode_offset ( mbmi -> mode ) ] ; if ( best_ref_frame == INTRA_FRAME ) { int intra_modes = sizeof ( intra_mode_list ) / sizeof ( PREDICTION_MODE ) ; int i ; for ( i = 0 ; i < intra_modes ; i ++ ) { update_thresh_freq_fact ( cpi , tile_data , bsize , INTRA_FRAME , best_mode_idx , intra_mode_list [ i ] ) ; } } else { for ( ref_frame = LAST_FRAME ; ref_frame <= GOLDEN_FRAME ; ++ ref_frame ) { PREDICTION_MODE this_mode ; if ( best_ref_frame != ref_frame ) continue ; for ( this_mode = NEARESTMV ; this_mode <= NEWMV ; ++ this_mode ) { update_thresh_freq_fact ( cpi , tile_data , bsize , ref_frame , best_mode_idx , this_mode ) ; } } } } * rd_cost = best_rdc <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11609\n\n```\nCWE-476 static int stv06xx_start ( struct gspca_dev * gspca_dev ) { struct sd * sd = ( struct sd * ) gspca_dev ; struct usb_host_interface * alt ; struct usb_interface * intf ; int err , packet_size ; intf = usb_ifnum_to_if ( sd -> gspca_dev . dev , sd -> gspca_dev . iface ) ; alt = usb_altnum_to_altsetting ( intf , sd -> gspca_dev . alt ) ; if ( ! alt ) { gspca_err ( gspca_dev , \"Couldn\\'t<S2SV_blank>get<S2SV_blank>altsetting\\\\n\" ) ; return - EIO ; } <S2SV_StartBug> packet_size = le16_to_cpu ( alt -> endpoint [ 0 ] . desc . wMaxPacketSize ) ; <S2SV_EndBug> err = stv06xx_write_bridge ( sd , STV_ISO_SIZE_L , packet_size ) ; if ( err < 0 ) return err ; err = sd -> sensor -> start ( sd ) ; if ( err < 0 ) goto out ; err = stv06xx_write_bridge ( sd , STV_ISO_ENABLE , 1 ) ; out : if ( err < 0 ) gspca_dbg ( gspca_dev , D_STREAM , \"Starting<S2SV_blank>stream<S2SV_blank>failed\\\\n\" ) ; else gspca_dbg ( gspca_dev , D_STREAM , \"Started<S2SV_blank>streaming\\\\n\" ) ; return ( err < 0 ) ? err : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> EIO ; } if ( alt -> desc . bNumEndpoints < 1 ) return - ENODEV ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1585\n\n```\nCWE-264 static struct cifsSesInfo * cifs_get_smb_ses ( struct TCP_Server_Info * server , struct smb_vol * volume_info ) { int rc = - ENOMEM , xid ; struct cifsSesInfo * ses ; xid = GetXid ( ) ; <S2SV_StartBug> ses = cifs_find_smb_ses ( server , volume_info -> username ) ; <S2SV_EndBug> if ( ses ) { cFYI ( 1 , \"Existing<S2SV_blank>smb<S2SV_blank>sess<S2SV_blank>found<S2SV_blank>(status=%d)\" , ses -> status ) ; cifs_put_tcp_session ( server ) ; mutex_lock ( & ses -> session_mutex ) ; rc = cifs_negotiate_protocol ( xid , ses ) ; if ( rc ) { mutex_unlock ( & ses -> session_mutex ) ; cifs_put_smb_ses ( ses ) ; FreeXid ( xid ) ; return ERR_PTR ( rc ) ; } if ( ses -> need_reconnect ) { cFYI ( 1 , \"Session<S2SV_blank>needs<S2SV_blank>reconnect\" ) ; rc = cifs_setup_session ( xid , ses , volume_info -> local_nls ) ; if ( rc ) { mutex_unlock ( & ses -> session_mutex ) ; cifs_put_smb_ses ( ses ) ; FreeXid ( xid ) ; return ERR_PTR ( rc ) ; } } mutex_unlock ( & ses -> session_mutex ) ; FreeXid ( xid ) ; return ses ; } cFYI ( 1 , \"Existing<S2SV_blank>smb<S2SV_blank>sess<S2SV_blank>not<S2SV_blank>found\" ) ; ses = sesInfoAlloc ( ) ; if ( ses == NULL ) goto get_ses_fail ; ses -> server = server ; if ( server -> addr . sockAddr6 . sin6_family == AF_INET6 ) sprintf ( ses -> serverName , \"%pI6\" , & server -> addr . sockAddr6 . sin6_addr ) ; else sprintf ( ses -> serverName , \"%pI4\" , & server -> addr . sockAddr . sin_addr . s_addr ) ; if ( volume_info -> username ) strncpy ( ses -> userName , volume_info -> username , MAX_USERNAME_SIZE ) ; if ( volume_info -> password ) { ses -> password = kstrdup ( volume_info -> password , GFP_KERNEL ) ; if ( ! ses -> password ) goto get_ses_fail ; } if ( volume_info -> domainname ) { int len = strlen ( volume_info -> domainname ) ; ses -> domainName = kmalloc ( len + 1 , GFP_KERNEL ) ; if ( ses -> domainName ) strcpy ( ses -> domainName , volume_info -> domainname ) ; } ses -> linux_uid = volume_info -> linux_uid ; ses -> overrideSecFlg = volume_info -> secFlg ; mutex_lock ( & ses -> session_mutex ) ; rc = cifs_negotiate_protocol ( xid , ses ) ; if ( ! rc ) rc = cifs_setup_session ( xid , ses , volume_info -> local_nls ) ; mutex_unlock ( & ses -> session_mutex ) ; if ( rc ) goto get_ses_fail ; write_lock ( & cifs_tcp_ses_lock ) ; list_add ( & ses -> smb_ses_list , & server -> smb_ses_list ) ; write_unlock ( & cifs_tcp_ses_lock ) ; FreeXid ( xid ) ; return ses ; get_ses_fail : sesInfoFree ( ses ) ; FreeXid ( xid ) ; return ERR_PTR ( rc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> server , volume_info <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-320(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10011\n\n```\nCWE-320 int sshkey_load_file ( int fd , struct sshbuf * blob ) { u_char buf [ 1024 ] ; size_t len ; struct stat st ; <S2SV_StartBug> int r ; <S2SV_EndBug> if ( fstat ( fd , & st ) < 0 ) return SSH_ERR_SYSTEM_ERROR ; if ( ( st . st_mode & ( S_IFSOCK | S_IFCHR | S_IFIFO ) ) == 0 && st . st_size > MAX_KEY_FILE_SIZE ) return SSH_ERR_INVALID_FORMAT ; <S2SV_StartBug> for ( ; ; ) { <S2SV_EndBug> if ( ( len = atomicio ( read , fd , buf , sizeof ( buf ) ) ) == 0 ) { if ( errno == EPIPE ) break ; r = SSH_ERR_SYSTEM_ERROR ; goto out ; } if ( ( r = sshbuf_put ( blob , buf , len ) ) != 0 ) goto out ; if ( sshbuf_len ( blob ) > MAX_KEY_FILE_SIZE ) { r = SSH_ERR_INVALID_FORMAT ; goto out ; } } if ( ( st . st_mode & ( S_IFSOCK | S_IFCHR | S_IFIFO ) ) == 0 && st . st_size != ( off_t ) sshbuf_len ( blob ) ) { r = SSH_ERR_FILE_CHANGED ; goto out ; } r = 0 ; out : explicit_bzero ( buf , sizeof ( buf ) ) ; if ( r != 0 ) sshbuf_reset ( blob ) ; return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int r , dontmax = 0 <S2SV_ModStart> return SSH_ERR_INVALID_FORMAT ; if ( ( st . st_mode & S_IFREG ) == 0 || st . st_size <= 0 ) { st . st_size = 64 * 1024 ; dontmax = 1 ; } if ( ( r = sshbuf_allocate ( blob , st . st_size ) ) != 0 || ( dontmax && ( r = sshbuf_set_max_size ( blob , st . st_size ) ) != 0 ) ) return r ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 void common_timer_get ( struct k_itimer * timr , struct itimerspec64 * cur_setting ) { const struct k_clock * kc = timr -> kclock ; ktime_t now , remaining , iv ; struct timespec64 ts64 ; bool sig_none ; sig_none = timr -> it_sigev_notify == SIGEV_NONE ; iv = timr -> it_interval ; if ( iv ) { cur_setting -> it_interval = ktime_to_timespec64 ( iv ) ; } else if ( ! timr -> it_active ) { if ( ! sig_none ) return ; } kc -> clock_get ( timr -> it_clock , & ts64 ) ; now = timespec64_to_ktime ( ts64 ) ; if ( iv && ( timr -> it_requeue_pending & REQUEUE_PENDING || sig_none ) ) <S2SV_StartBug> timr -> it_overrun += ( int ) kc -> timer_forward ( timr , now ) ; <S2SV_EndBug> remaining = kc -> timer_remaining ( timr , now ) ; if ( remaining <= 0 ) { if ( ! sig_none ) cur_setting -> it_value . tv_nsec = 1 ; } else { cur_setting -> it_value = ktime_to_timespec64 ( remaining ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> it_overrun += <S2SV_ModEnd> kc -> timer_forward\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 void impeg2d_flush_ext_and_user_data ( dec_state_t * ps_dec ) { UWORD32 u4_start_code ; stream_t * ps_stream ; ps_stream = & ps_dec -> s_bit_stream ; u4_start_code = impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) ; <S2SV_StartBug> while ( u4_start_code == EXTENSION_START_CODE || u4_start_code == USER_DATA_START_CODE ) <S2SV_EndBug> { impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; <S2SV_StartBug> while ( impeg2d_bit_stream_nxt ( ps_stream , START_CODE_PREFIX_LEN ) != START_CODE_PREFIX ) <S2SV_EndBug> { impeg2d_bit_stream_flush ( ps_stream , 8 ) ; } u4_start_code = impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; while ( ( <S2SV_ModStart> u4_start_code == USER_DATA_START_CODE ) && ( ps_stream -> u4_offset < ps_stream -> u4_max_offset ) <S2SV_ModStart> ) != START_CODE_PREFIX && ( ps_stream -> u4_offset < ps_stream -> u4_max_offset )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17855\n\n```\nCWE-119 static bool regsafe ( struct bpf_reg_state * rold , struct bpf_reg_state * rcur , struct idpair * idmap ) { if ( ! ( rold -> live & REG_LIVE_READ ) ) return true ; if ( memcmp ( rold , rcur , offsetof ( struct bpf_reg_state , live ) ) == 0 ) return true ; if ( rold -> type == NOT_INIT ) return true ; if ( rcur -> type == NOT_INIT ) return false ; switch ( rold -> type ) { case SCALAR_VALUE : if ( rcur -> type == SCALAR_VALUE ) { return range_within ( rold , rcur ) && tnum_in ( rold -> var_off , rcur -> var_off ) ; } else { <S2SV_StartBug> return rold -> umin_value == 0 && <S2SV_EndBug> rold -> umax_value == U64_MAX && rold -> smin_value == S64_MIN && rold -> smax_value == S64_MAX && tnum_is_unknown ( rold -> var_off ) ; } case PTR_TO_MAP_VALUE : return memcmp ( rold , rcur , offsetof ( struct bpf_reg_state , id ) ) == 0 && range_within ( rold , rcur ) && tnum_in ( rold -> var_off , rcur -> var_off ) ; case PTR_TO_MAP_VALUE_OR_NULL : if ( rcur -> type != PTR_TO_MAP_VALUE_OR_NULL ) return false ; if ( memcmp ( rold , rcur , offsetof ( struct bpf_reg_state , id ) ) ) return false ; return check_ids ( rold -> id , rcur -> id , idmap ) ; case PTR_TO_PACKET_META : case PTR_TO_PACKET : if ( rcur -> type != rold -> type ) return false ; if ( rold -> range > rcur -> range ) return false ; if ( rold -> off != rcur -> off ) return false ; if ( rold -> id && ! check_ids ( rold -> id , rcur -> id , idmap ) ) return false ; return range_within ( rold , rcur ) && tnum_in ( rold -> var_off , rcur -> var_off ) ; case PTR_TO_CTX : case CONST_PTR_TO_MAP : case PTR_TO_STACK : case PTR_TO_PACKET_END : default : return false ; } WARN_ON_ONCE ( 1 ) ; return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> else { return false <S2SV_ModEnd> ; } case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6537\n\n```\nCWE-200 static void copy_to_user_state ( struct xfrm_state * x , struct xfrm_usersa_info * p ) { <S2SV_StartBug> memcpy ( & p -> id , & x -> id , sizeof ( p -> id ) ) ; <S2SV_EndBug> memcpy ( & p -> sel , & x -> sel , sizeof ( p -> sel ) ) ; memcpy ( & p -> lft , & x -> lft , sizeof ( p -> lft ) ) ; memcpy ( & p -> curlft , & x -> curlft , sizeof ( p -> curlft ) ) ; memcpy ( & p -> stats , & x -> stats , sizeof ( p -> stats ) ) ; memcpy ( & p -> saddr , & x -> props . saddr , sizeof ( p -> saddr ) ) ; p -> mode = x -> props . mode ; p -> replay_window = x -> props . replay_window ; p -> reqid = x -> props . reqid ; p -> family = x -> props . family ; p -> flags = x -> props . flags ; p -> seq = x -> km . seq ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p ) { memset ( p , 0 , sizeof ( * p ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2699\n\n```\nCWE-000 int ip6_fragment ( struct sk_buff * skb , int ( * output ) ( struct sk_buff * ) ) { struct sk_buff * frag ; struct rt6_info * rt = ( struct rt6_info * ) skb_dst ( skb ) ; struct ipv6_pinfo * np = skb -> sk ? inet6_sk ( skb -> sk ) : NULL ; struct ipv6hdr * tmp_hdr ; struct frag_hdr * fh ; unsigned int mtu , hlen , left , len ; __be32 frag_id = 0 ; int ptr , offset = 0 , err = 0 ; u8 * prevhdr , nexthdr = 0 ; struct net * net = dev_net ( skb_dst ( skb ) -> dev ) ; hlen = ip6_find_1stfragopt ( skb , & prevhdr ) ; nexthdr = * prevhdr ; mtu = ip6_skb_dst_mtu ( skb ) ; if ( ! skb -> local_df && skb -> len > mtu ) { skb -> dev = skb_dst ( skb ) -> dev ; icmpv6_send ( skb , ICMPV6_PKT_TOOBIG , 0 , mtu ) ; IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; kfree_skb ( skb ) ; return - EMSGSIZE ; } if ( np && np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } mtu -= hlen + sizeof ( struct frag_hdr ) ; if ( skb_has_frag_list ( skb ) ) { int first_len = skb_pagelen ( skb ) ; struct sk_buff * frag2 ; if ( first_len - hlen > mtu || ( ( first_len - hlen ) & 7 ) || skb_cloned ( skb ) ) goto slow_path ; skb_walk_frags ( skb , frag ) { if ( frag -> len > mtu || ( ( frag -> len & 7 ) && frag -> next ) || skb_headroom ( frag ) < hlen ) goto slow_path_clean ; if ( skb_shared ( frag ) ) goto slow_path_clean ; BUG_ON ( frag -> sk ) ; if ( skb -> sk ) { frag -> sk = skb -> sk ; frag -> destructor = sock_wfree ; } skb -> truesize -= frag -> truesize ; } err = 0 ; offset = 0 ; frag = skb_shinfo ( skb ) -> frag_list ; skb_frag_list_init ( skb ) ; * prevhdr = NEXTHDR_FRAGMENT ; tmp_hdr = kmemdup ( skb_network_header ( skb ) , hlen , GFP_ATOMIC ) ; if ( ! tmp_hdr ) { IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; return - ENOMEM ; } __skb_pull ( skb , hlen ) ; fh = ( struct frag_hdr * ) __skb_push ( skb , sizeof ( struct frag_hdr ) ) ; __skb_push ( skb , hlen ) ; skb_reset_network_header ( skb ) ; memcpy ( skb_network_header ( skb ) , tmp_hdr , hlen ) ; <S2SV_StartBug> ipv6_select_ident ( fh ) ; <S2SV_EndBug> fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; fh -> frag_off = htons ( IP6_MF ) ; frag_id = fh -> identification ; first_len = skb_pagelen ( skb ) ; skb -> data_len = first_len - skb_headlen ( skb ) ; skb -> len = first_len ; ipv6_hdr ( skb ) -> payload_len = htons ( first_len - sizeof ( struct ipv6hdr ) ) ; dst_hold ( & rt -> dst ) ; for ( ; ; ) { if ( frag ) { frag -> ip_summed = CHECKSUM_NONE ; skb_reset_transport_header ( frag ) ; fh = ( struct frag_hdr * ) __skb_push ( frag , sizeof ( struct frag_hdr ) ) ; __skb_push ( frag , hlen ) ; skb_reset_network_header ( frag ) ; memcpy ( skb_network_header ( frag ) , tmp_hdr , hlen ) ; offset += skb -> len - hlen - sizeof ( struct frag_hdr ) ; fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; fh -> frag_off = htons ( offset ) ; if ( frag -> next != NULL ) fh -> frag_off |= htons ( IP6_MF ) ; fh -> identification = frag_id ; ipv6_hdr ( frag ) -> payload_len = htons ( frag -> len - sizeof ( struct ipv6hdr ) ) ; ip6_copy_metadata ( frag , skb ) ; } err = output ( skb ) ; if ( ! err ) IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGCREATES ) ; if ( err || ! frag ) break ; skb = frag ; frag = skb -> next ; skb -> next = NULL ; } kfree ( tmp_hdr ) ; if ( err == 0 ) { IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGOKS ) ; dst_release ( & rt -> dst ) ; return 0 ; } while ( frag ) { skb = frag -> next ; kfree_skb ( frag ) ; frag = skb ; } IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGFAILS ) ; dst_release ( & rt -> dst ) ; return err ; slow_path_clean : skb_walk_frags ( skb , frag2 ) { if ( frag2 == frag ) break ; frag2 -> sk = NULL ; frag2 -> destructor = NULL ; skb -> truesize += frag2 -> truesize ; } } slow_path : left = skb -> len - hlen ; ptr = hlen ; * prevhdr = NEXTHDR_FRAGMENT ; while ( left > 0 ) { len = left ; if ( len > mtu ) len = mtu ; if ( len < left ) { len &= ~ 7 ; } if ( ( frag = alloc_skb ( len + hlen + sizeof ( struct frag_hdr ) + LL_ALLOCATED_SPACE ( rt -> dst . dev ) , GFP_ATOMIC ) ) == NULL ) { NETDEBUG ( KERN_INFO \"IPv6:<S2SV_blank>frag:<S2SV_blank>no<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>new<S2SV_blank>fragment!\\\\n\" ) ; IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; err = - ENOMEM ; goto fail ; } ip6_copy_metadata ( frag , skb ) ; skb_reserve ( frag , LL_RESERVED_SPACE ( rt -> dst . dev ) ) ; skb_put ( frag , len + hlen + sizeof ( struct frag_hdr ) ) ; skb_reset_network_header ( frag ) ; fh = ( struct frag_hdr * ) ( skb_network_header ( frag ) + hlen ) ; frag -> transport_header = ( frag -> network_header + hlen + sizeof ( struct frag_hdr ) ) ; if ( skb -> sk ) skb_set_owner_w ( frag , skb -> sk ) ; skb_copy_from_linear_data ( skb , skb_network_header ( frag ) , hlen ) ; fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; if ( ! frag_id ) { <S2SV_StartBug> ipv6_select_ident ( fh ) ; <S2SV_EndBug> frag_id = fh -> identification ; } else fh -> identification = frag_id ; if ( skb_copy_bits ( skb , ptr , skb_transport_header ( frag ) , len ) ) BUG ( ) ; left -= len ; fh -> frag_off = htons ( offset ) ; if ( left > 0 ) fh -> frag_off |= htons ( IP6_MF ) ; ipv6_hdr ( frag ) -> payload_len = htons ( frag -> len - sizeof ( struct ipv6hdr ) ) ; ptr += len ; offset += len ; err = output ( frag ) ; if ( err ) goto fail ; IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGCREATES ) ; } IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGOKS ) ; kfree_skb ( skb ) ; return err ; fail : IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; kfree_skb ( skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ipv6_select_ident ( fh , rt <S2SV_ModStart> ipv6_select_ident ( fh , rt\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_yv12_realloc_frame_buffer ( YV12_BUFFER_CONFIG * ybf , int width , int height , int border ) { if ( ybf ) { int aligned_width = ( width + 15 ) & ~ 15 ; int aligned_height = ( height + 15 ) & ~ 15 ; int y_stride = ( ( aligned_width + 2 * border ) + 31 ) & ~ 31 ; int yplane_size = ( aligned_height + 2 * border ) * y_stride ; int uv_width = aligned_width >> 1 ; int uv_height = aligned_height >> 1 ; int uv_stride = y_stride >> 1 ; int uvplane_size = ( uv_height + border ) * uv_stride ; const int frame_size = yplane_size + 2 * uvplane_size ; if ( ! ybf -> buffer_alloc ) { ybf -> buffer_alloc = ( uint8_t * ) vpx_memalign ( 32 , frame_size ) ; ybf -> buffer_alloc_sz = frame_size ; } if ( ! ybf -> buffer_alloc || ybf -> buffer_alloc_sz < frame_size ) return - 1 ; if ( border & 0x1f ) return - 3 ; ybf -> y_crop_width = width ; ybf -> y_crop_height = height ; ybf -> y_width = aligned_width ; ybf -> y_height = aligned_height ; ybf -> y_stride = y_stride ; <S2SV_StartBug> ybf -> uv_width = uv_width ; <S2SV_EndBug> ybf -> uv_height = uv_height ; ybf -> uv_stride = uv_stride ; ybf -> alpha_width = 0 ; ybf -> alpha_height = 0 ; ybf -> alpha_stride = 0 ; ybf -> border = border ; ybf -> frame_size = frame_size ; ybf -> y_buffer = ybf -> buffer_alloc + ( border * y_stride ) + border ; ybf -> u_buffer = ybf -> buffer_alloc + yplane_size + ( border / 2 * uv_stride ) + border / 2 ; ybf -> v_buffer = ybf -> buffer_alloc + yplane_size + uvplane_size + ( border / 2 * uv_stride ) + border / 2 ; ybf -> alpha_buffer = NULL ; ybf -> corrupted = 0 ; return 0 ; } return - 2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ybf -> uv_crop_width = ( width + 1 ) / 2 ; ybf -> uv_crop_height = ( height + 1 ) / 2 ; ybf ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7144\n\n```\nCWE-287 CMD_FUNC ( m_authenticate ) { aClient * agent_p = NULL ; if ( ! SASL_SERVER || ! MyConnect ( sptr ) || BadPtr ( parv [ 1 ] ) || ! CHECKPROTO ( sptr , PROTO_SASL ) ) return 0 ; if ( sptr -> local -> sasl_complete ) { sendto_one ( sptr , err_str ( ERR_SASLALREADY ) , me . name , BadPtr ( sptr -> name ) ? \"*\" : sptr -> name ) ; return 0 ; } <S2SV_StartBug> if ( strlen ( parv [ 1 ] ) > 400 ) <S2SV_EndBug> { sendto_one ( sptr , err_str ( ERR_SASLTOOLONG ) , me . name , BadPtr ( sptr -> name ) ? \"*\" : sptr -> name ) ; return 0 ; } if ( * sptr -> local -> sasl_agent ) agent_p = find_client ( sptr -> local -> sasl_agent , NULL ) ; if ( agent_p == NULL ) { char * addr = BadPtr ( sptr -> ip ) ? \"0\" : sptr -> ip ; char * certfp = moddata_client_get ( sptr , \"certfp\" ) ; sendto_server ( NULL , 0 , 0 , \":%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>H<S2SV_blank>%s<S2SV_blank>%s\" , me . name , SASL_SERVER , encode_puid ( sptr ) , addr , addr ) ; if ( certfp ) sendto_server ( NULL , 0 , 0 , \":%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>S<S2SV_blank>%s<S2SV_blank>%s\" , me . name , SASL_SERVER , encode_puid ( sptr ) , parv [ 1 ] , certfp ) ; else sendto_server ( NULL , 0 , 0 , \":%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>S<S2SV_blank>%s\" , me . name , SASL_SERVER , encode_puid ( sptr ) , parv [ 1 ] ) ; } else sendto_server ( NULL , 0 , 0 , \":%s<S2SV_blank>SASL<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>C<S2SV_blank>%s\" , me . name , AGENT_SID ( agent_p ) , encode_puid ( sptr ) , parv [ 1 ] ) ; sptr -> local -> sasl_out ++ ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ( parv [ 1 ] [ 0 ] == ':' ) || strchr ( parv [ 1 ] , '<S2SV_blank>' ) ) { sendto_one ( sptr , err_str ( ERR_CANNOTDOCOMMAND ) , me . name , \"*\" , \"AUTHENTICATE\" , \"Invalid<S2SV_blank>parameter\" ) ; return 0 ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 <S2SV_StartBug> void ptrace_triggered ( struct perf_event * bp , int nmi , <S2SV_EndBug> struct perf_sample_data * data , struct pt_regs * regs ) { struct perf_event_attr attr ; attr = bp -> attr ; attr . disabled = true ; modify_user_hw_breakpoint ( bp , & attr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event * bp <S2SV_ModEnd> , struct perf_sample_data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-21261\n\n```\nCWE-74 gboolean flatpak_run_add_environment_args ( FlatpakBwrap * bwrap , const char * app_info_path , FlatpakRunFlags flags , const char * app_id , FlatpakContext * context , GFile * app_id_dir , GPtrArray * previous_app_id_dirs , FlatpakExports * * exports_out , GCancellable * cancellable , GError * * error ) { g_autoptr ( GError ) my_error = NULL ; g_autoptr ( FlatpakExports ) exports = NULL ; g_autoptr ( FlatpakBwrap ) proxy_arg_bwrap = flatpak_bwrap_new ( flatpak_bwrap_empty_env ) ; gboolean has_wayland = FALSE ; gboolean allow_x11 = FALSE ; if ( ( context -> shares & FLATPAK_CONTEXT_SHARED_IPC ) == 0 ) { g_debug ( \"Disallowing<S2SV_blank>ipc<S2SV_blank>access\" ) ; flatpak_bwrap_add_args ( bwrap , \"--unshare-ipc\" , NULL ) ; } if ( ( context -> shares & FLATPAK_CONTEXT_SHARED_NETWORK ) == 0 ) { g_debug ( \"Disallowing<S2SV_blank>network<S2SV_blank>access\" ) ; flatpak_bwrap_add_args ( bwrap , \"--unshare-net\" , NULL ) ; } if ( context -> devices & FLATPAK_CONTEXT_DEVICE_ALL ) { flatpak_bwrap_add_args ( bwrap , \"--dev-bind\" , \"/dev\" , \"/dev\" , NULL ) ; if ( g_file_test ( \"/dev/shm\" , G_FILE_TEST_IS_DIR ) ) { if ( ( context -> devices & FLATPAK_CONTEXT_DEVICE_SHM ) == 0 ) flatpak_bwrap_add_args ( bwrap , \"--tmpfs\" , \"/dev/shm\" , NULL ) ; } else if ( g_file_test ( \"/dev/shm\" , G_FILE_TEST_IS_SYMLINK ) ) { g_autofree char * link = flatpak_readlink ( \"/dev/shm\" , NULL ) ; if ( g_strcmp0 ( link , \"/run/shm\" ) == 0 ) { if ( context -> devices & FLATPAK_CONTEXT_DEVICE_SHM && g_file_test ( \"/run/shm\" , G_FILE_TEST_IS_DIR ) ) flatpak_bwrap_add_args ( bwrap , \"--bind\" , \"/run/shm\" , \"/run/shm\" , NULL ) ; else flatpak_bwrap_add_args ( bwrap , \"--dir\" , \"/run/shm\" , NULL ) ; } else g_warning ( \"Unexpected<S2SV_blank>/dev/shm<S2SV_blank>symlink<S2SV_blank>%s\" , link ) ; } } else { flatpak_bwrap_add_args ( bwrap , \"--dev\" , \"/dev\" , NULL ) ; if ( context -> devices & FLATPAK_CONTEXT_DEVICE_DRI ) { g_debug ( \"Allowing<S2SV_blank>dri<S2SV_blank>access\" ) ; int i ; char * dri_devices [ ] = { \"/dev/dri\" , \"/dev/mali\" , \"/dev/mali0\" , \"/dev/umplock\" , \"/dev/nvidiactl\" , \"/dev/nvidia-modeset\" , \"/dev/nvidia-uvm\" , \"/dev/nvidia-uvm-tools\" , } ; for ( i = 0 ; i < G_N_ELEMENTS ( dri_devices ) ; i ++ ) { if ( g_file_test ( dri_devices [ i ] , G_FILE_TEST_EXISTS ) ) flatpak_bwrap_add_args ( bwrap , \"--dev-bind\" , dri_devices [ i ] , dri_devices [ i ] , NULL ) ; } char nvidia_dev [ 14 ] ; for ( i = 0 ; i < 20 ; i ++ ) { g_snprintf ( nvidia_dev , sizeof ( nvidia_dev ) , \"/dev/nvidia%d\" , i ) ; if ( g_file_test ( nvidia_dev , G_FILE_TEST_EXISTS ) ) flatpak_bwrap_add_args ( bwrap , \"--dev-bind\" , nvidia_dev , nvidia_dev , NULL ) ; } } if ( context -> devices & FLATPAK_CONTEXT_DEVICE_KVM ) { g_debug ( \"Allowing<S2SV_blank>kvm<S2SV_blank>access\" ) ; if ( g_file_test ( \"/dev/kvm\" , G_FILE_TEST_EXISTS ) ) flatpak_bwrap_add_args ( bwrap , \"--dev-bind\" , \"/dev/kvm\" , \"/dev/kvm\" , NULL ) ; } if ( context -> devices & FLATPAK_CONTEXT_DEVICE_SHM ) { g_autofree char * real_dev_shm = realpath ( \"/dev/shm\" , NULL ) ; g_debug ( \"Allowing<S2SV_blank>/dev/shm<S2SV_blank>access<S2SV_blank>(as<S2SV_blank>%s)\" , real_dev_shm ) ; if ( real_dev_shm != NULL ) flatpak_bwrap_add_args ( bwrap , \"--bind\" , real_dev_shm , \"/dev/shm\" , NULL ) ; } } flatpak_context_append_bwrap_filesystem ( context , bwrap , app_id , app_id_dir , previous_app_id_dirs , & exports ) ; if ( context -> sockets & FLATPAK_CONTEXT_SOCKET_WAYLAND ) { g_debug ( \"Allowing<S2SV_blank>wayland<S2SV_blank>access\" ) ; has_wayland = flatpak_run_add_wayland_args ( bwrap ) ; } if ( ( context -> sockets & FLATPAK_CONTEXT_SOCKET_FALLBACK_X11 ) != 0 ) allow_x11 = ! has_wayland ; else allow_x11 = ( context -> sockets & FLATPAK_CONTEXT_SOCKET_X11 ) != 0 ; flatpak_run_add_x11_args ( bwrap , allow_x11 ) ; if ( context -> sockets & FLATPAK_CONTEXT_SOCKET_SSH_AUTH ) { flatpak_run_add_ssh_args ( bwrap ) ; } if ( context -> sockets & FLATPAK_CONTEXT_SOCKET_PULSEAUDIO ) { g_debug ( \"Allowing<S2SV_blank>pulseaudio<S2SV_blank>access\" ) ; flatpak_run_add_pulseaudio_args ( bwrap ) ; } if ( context -> sockets & FLATPAK_CONTEXT_SOCKET_PCSC ) { flatpak_run_add_pcsc_args ( bwrap ) ; } if ( context -> sockets & FLATPAK_CONTEXT_SOCKET_CUPS ) { flatpak_run_add_cups_args ( bwrap ) ; } flatpak_run_add_session_dbus_args ( bwrap , proxy_arg_bwrap , context , flags , app_id ) ; flatpak_run_add_system_dbus_args ( bwrap , proxy_arg_bwrap , context , flags ) ; flatpak_run_add_a11y_dbus_args ( bwrap , proxy_arg_bwrap , context , flags ) ; <S2SV_StartBug> if ( g_environ_getenv ( bwrap -> envp , \"LD_LIBRARY_PATH\" ) != NULL ) <S2SV_EndBug> { flatpak_bwrap_add_args ( bwrap , \"--setenv\" , \"LD_LIBRARY_PATH\" , g_environ_getenv ( bwrap -> envp , \"LD_LIBRARY_PATH\" ) , NULL ) ; flatpak_bwrap_unset_env ( bwrap , \"LD_LIBRARY_PATH\" ) ; } if ( g_environ_getenv ( bwrap -> envp , \"TMPDIR\" ) != NULL ) { flatpak_bwrap_add_args ( bwrap , \"--setenv\" , \"TMPDIR\" , g_environ_getenv ( bwrap -> envp , \"TMPDIR\" ) , NULL ) ; flatpak_bwrap_unset_env ( bwrap , \"TMPDIR\" ) ; } if ( ! flatpak_run_in_transient_unit ( app_id , & my_error ) ) { g_debug ( \"Failed<S2SV_blank>to<S2SV_blank>run<S2SV_blank>in<S2SV_blank>transient<S2SV_blank>scope:<S2SV_blank>%s\" , my_error -> message ) ; g_clear_error ( & my_error ) ; } if ( ! flatpak_bwrap_is_empty ( proxy_arg_bwrap ) && ! start_dbus_proxy ( bwrap , proxy_arg_bwrap , app_info_path , error ) ) return FALSE ; if ( exports_out ) * exports_out = g_steal_pointer ( & exports ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> ! flatpak_run_in_transient_unit (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19045\n\n```\nCWE-200 static mode_t set_umask ( const char * optarg ) { long umask_long ; mode_t umask_val ; char * endptr ; umask_long = strtoll ( optarg , & endptr , 0 ) ; if ( * endptr || umask_long < 0 || umask_long & ~ 0777L ) { fprintf ( stderr , \"Invalid<S2SV_blank>--umask<S2SV_blank>option<S2SV_blank>%s\" , optarg ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } umask_val = umask_long & 0777 ; umask ( umask_val ) ; umask_cmdline = true ; return umask_val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20217\n\n```\nCWE-617 krb5_error_code kdc_process_s4u2self_req ( kdc_realm_t * kdc_active_realm , krb5_kdc_req * request , krb5_const_principal client_princ , krb5_const_principal header_srv_princ , krb5_boolean issuing_referral , const krb5_db_entry * server , krb5_keyblock * tgs_subkey , krb5_keyblock * tgs_session , krb5_timestamp kdc_time , krb5_pa_s4u_x509_user * * s4u_x509_user , krb5_db_entry * * princ_ptr , const char * * status ) { krb5_error_code code ; krb5_boolean is_local_tgt ; krb5_pa_data * pa_data ; int flags ; krb5_db_entry * princ ; * princ_ptr = NULL ; pa_data = krb5int_find_pa_data ( kdc_context , request -> padata , KRB5_PADATA_S4U_X509_USER ) ; if ( pa_data != NULL ) { code = kdc_process_s4u_x509_user ( kdc_context , request , pa_data , tgs_subkey , tgs_session , s4u_x509_user , status ) ; if ( code != 0 ) return code ; } else { pa_data = krb5int_find_pa_data ( kdc_context , request -> padata , KRB5_PADATA_FOR_USER ) ; if ( pa_data != NULL ) { code = kdc_process_for_user ( kdc_active_realm , pa_data , tgs_session , s4u_x509_user , status ) ; if ( code != 0 ) return code ; } else return 0 ; } flags = 0 ; switch ( krb5_princ_type ( kdc_context , request -> server ) ) { case KRB5_NT_SRV_HST : if ( krb5_princ_size ( kdc_context , request -> server ) == 2 ) flags |= KRB5_PRINCIPAL_COMPARE_IGNORE_REALM ; break ; case KRB5_NT_ENTERPRISE_PRINCIPAL : flags |= KRB5_PRINCIPAL_COMPARE_ENTERPRISE ; break ; default : break ; } if ( ! krb5_principal_compare_flags ( kdc_context , request -> server , client_princ , flags ) ) { * status = \"INVALID_S4U2SELF_REQUEST\" ; return KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; } if ( request -> kdc_options & AS_INVALID_OPTIONS ) { * status = \"INVALID<S2SV_blank>AS<S2SV_blank>OPTIONS\" ; return KRB5KDC_ERR_BADOPTION ; } is_local_tgt = ! is_cross_tgs_principal ( header_srv_princ ) ; if ( is_local_tgt && issuing_referral ) { * status = \"LOOKING_UP_SERVER\" ; return KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; } if ( is_local_principal ( kdc_active_realm , ( * s4u_x509_user ) -> user_id . user ) ) { krb5_db_entry no_server ; krb5_pa_data * * e_data = NULL ; if ( ! is_local_tgt && ! issuing_referral ) { * status = \"NOT_CROSS_REALM_REQUEST\" ; return KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; } code = krb5_db_get_principal ( kdc_context , ( * s4u_x509_user ) -> user_id . user , KRB5_KDB_FLAG_INCLUDE_PAC , & princ ) ; if ( code == KRB5_KDB_NOENTRY ) { * status = \"UNKNOWN_S4U2SELF_PRINCIPAL\" ; return KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; } else if ( code ) { * status = \"LOOKING_UP_S4U2SELF_PRINCIPAL\" ; return code ; } memset ( & no_server , 0 , sizeof ( no_server ) ) ; <S2SV_StartBug> code = validate_as_request ( kdc_active_realm , request , * princ , <S2SV_EndBug> no_server , kdc_time , status , & e_data ) ; if ( code ) { krb5_db_free_principal ( kdc_context , princ ) ; krb5_free_pa_data ( kdc_context , e_data ) ; return code ; } * princ_ptr = princ ; } else if ( is_local_tgt ) { * status = \"S4U2SELF_CLIENT_NOT_OURS\" ; return KRB5KDC_ERR_POLICY ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; princ -> pw_expiration = 0 ; clear ( princ -> attributes , KRB5_KDB_REQUIRES_PWCHANGE ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18200\n\n```\nCWE-20 static void f2fs_put_super ( struct super_block * sb ) { struct f2fs_sb_info * sbi = F2FS_SB ( sb ) ; int i ; f2fs_quota_off_umount ( sb ) ; mutex_lock ( & sbi -> umount_mutex ) ; if ( is_sbi_flag_set ( sbi , SBI_IS_DIRTY ) || ! is_set_ckpt_flags ( sbi , CP_UMOUNT_FLAG ) ) { struct cp_control cpc = { . reason = CP_UMOUNT , } ; write_checkpoint ( sbi , & cpc ) ; } <S2SV_StartBug> f2fs_wait_discard_bios ( sbi ) ; <S2SV_EndBug> if ( f2fs_discard_en ( sbi ) && ! sbi -> discard_blks ) { struct cp_control cpc = { . reason = CP_UMOUNT | CP_TRIMMED , } ; write_checkpoint ( sbi , & cpc ) ; } f2fs_destroy_stats ( sbi ) ; release_ino_entry ( sbi , true ) ; f2fs_leave_shrinker ( sbi ) ; mutex_unlock ( & sbi -> umount_mutex ) ; f2fs_flush_merged_writes ( sbi ) ; iput ( sbi -> node_inode ) ; iput ( sbi -> meta_inode ) ; destroy_node_manager ( sbi ) ; destroy_segment_manager ( sbi ) ; kfree ( sbi -> ckpt ) ; f2fs_unregister_sysfs ( sbi ) ; sb -> s_fs_info = NULL ; if ( sbi -> s_chksum_driver ) crypto_free_shash ( sbi -> s_chksum_driver ) ; kfree ( sbi -> raw_super ) ; destroy_device_list ( sbi ) ; mempool_destroy ( sbi -> write_io_dummy ) ; # ifdef CONFIG_QUOTA for ( i = 0 ; i < MAXQUOTAS ; i ++ ) kfree ( sbi -> s_qf_names [ i ] ) ; # endif destroy_percpu_info ( sbi ) ; for ( i = 0 ; i < NR_PAGE_TYPE ; i ++ ) kfree ( sbi -> write_io [ i ] ) ; kfree ( sbi ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> f2fs_wait_discard_bios ( sbi , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void read_frame_reference_mode_probs ( VP9_COMMON * cm , vp9_reader * r ) { <S2SV_EndBug> <S2SV_StartBug> FRAME_CONTEXT * const fc = & cm -> fc ; <S2SV_EndBug> int i ; if ( cm -> reference_mode == REFERENCE_MODE_SELECT ) for ( i = 0 ; i < COMP_INTER_CONTEXTS ; ++ i ) vp9_diff_update_prob ( r , & fc -> comp_inter_prob [ i ] ) ; if ( cm -> reference_mode != COMPOUND_REFERENCE ) for ( i = 0 ; i < REF_CONTEXTS ; ++ i ) { vp9_diff_update_prob ( r , & fc -> single_ref_prob [ i ] [ 0 ] ) ; vp9_diff_update_prob ( r , & fc -> single_ref_prob [ i ] [ 1 ] ) ; } if ( cm -> reference_mode != SINGLE_REFERENCE ) for ( i = 0 ; i < REF_CONTEXTS ; ++ i ) vp9_diff_update_prob ( r , & fc -> comp_ref_prob [ i ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cm , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> const fc = <S2SV_ModEnd> cm -> fc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-347(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15836\n\n```\nCWE-347 err_t verify_signed_hash ( const struct RSA_public_key * k , u_char * s , unsigned int s_max_octets , u_char * * psig , size_t hash_len , const u_char * sig_val , size_t sig_len ) { unsigned int padlen ; { chunk_t temp_s ; MP_INT c ; n_to_mpz ( & c , sig_val , sig_len ) ; oswcrypto . mod_exp ( & c , & c , & k -> e , & k -> n ) ; temp_s = mpz_to_n ( & c , sig_len ) ; if ( s_max_octets < sig_len ) { return \"2\" \"exponentiation<S2SV_blank>failed;<S2SV_blank>too<S2SV_blank>many<S2SV_blank>octets\" ; } memcpy ( s , temp_s . ptr , sig_len ) ; pfree ( temp_s . ptr ) ; mpz_clear ( & c ) ; } padlen = sig_len - 3 - hash_len ; DBG ( DBG_CRYPT , DBG_dump ( \"verify_sh<S2SV_blank>decrypted<S2SV_blank>SIG1:\" , s , sig_len ) ) ; DBG ( DBG_CRYPT , DBG_log ( \"pad_len<S2SV_blank>calculated:<S2SV_blank>%d<S2SV_blank>hash_len:<S2SV_blank>%d\" , padlen , ( int ) hash_len ) ) ; if ( s [ 0 ] != 0x00 || s [ 1 ] != 0x01 || s [ padlen + 2 ] != 0x00 ) { return \"3\" \"SIG<S2SV_blank>padding<S2SV_blank>does<S2SV_blank>not<S2SV_blank>check<S2SV_blank>out\" ; } <S2SV_StartBug> s += padlen + 3 ; <S2SV_EndBug> <S2SV_StartBug> ( * psig ) = s ; <S2SV_EndBug> return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"SIG<S2SV_blank>padding<S2SV_blank>does<S2SV_blank>not<S2SV_blank>check<S2SV_blank>out\" ; } ( * psig ) = s + <S2SV_ModEnd> padlen + 3 <S2SV_ModStart> + 3 ; { const u_char * p ; size_t cnt_ffs = 0 ; for ( p = s + 2 ; p < s + padlen + 2 ; p ++ ) if ( * p == 0xFF ) cnt_ffs ++ ; if ( cnt_ffs != padlen ) return \"4\" \"invalid<S2SV_blank>Padding<S2SV_blank>String\" ; } <S2SV_ModEnd> return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8956\n\n```\nCWE-476 static int rfcomm_sock_bind ( struct socket * sock , struct sockaddr * addr , int addr_len ) { <S2SV_StartBug> struct sockaddr_rc * sa = ( struct sockaddr_rc * ) addr ; <S2SV_EndBug> struct sock * sk = sock -> sk ; <S2SV_StartBug> int chan = sa -> rc_channel ; <S2SV_EndBug> <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> BT_DBG ( \"sk<S2SV_blank>%p<S2SV_blank>%pMR\" , sk , & sa -> rc_bdaddr ) ; if ( ! addr || addr -> sa_family != AF_BLUETOOTH ) return - EINVAL ; <S2SV_StartBug> lock_sock ( sk ) ; <S2SV_EndBug> if ( sk -> sk_state != BT_OPEN ) { err = - EBADFD ; goto done ; } if ( sk -> sk_type != SOCK_STREAM ) { err = - EINVAL ; goto done ; } write_lock ( & rfcomm_sk_list . lock ) ; <S2SV_StartBug> if ( chan && __rfcomm_get_listen_sock_by_addr ( chan , & sa -> rc_bdaddr ) ) { <S2SV_EndBug> err = - EADDRINUSE ; } else { <S2SV_StartBug> bacpy ( & rfcomm_pi ( sk ) -> src , & sa -> rc_bdaddr ) ; <S2SV_EndBug> <S2SV_StartBug> rfcomm_pi ( sk ) -> channel = chan ; <S2SV_EndBug> sk -> sk_state = BT_BOUND ; } write_unlock ( & rfcomm_sk_list . lock ) ; done : release_sock ( sk ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct sockaddr_rc sa <S2SV_ModEnd> ; struct sock <S2SV_ModStart> sk ; int len , <S2SV_ModEnd> err = 0 <S2SV_ModStart> err = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> - EINVAL ; memset ( & sa , 0 , sizeof ( sa ) ) ; len = min_t ( unsigned int , sizeof ( sa ) , addr_len ) ; memcpy ( & sa , addr , len ) ; BT_DBG ( \"sk<S2SV_blank>%p<S2SV_blank>%pMR\" , sk , & sa . rc_bdaddr ) ; <S2SV_ModStart> ; if ( sa . rc_channel <S2SV_ModEnd> && __rfcomm_get_listen_sock_by_addr ( <S2SV_ModStart> && __rfcomm_get_listen_sock_by_addr ( sa . rc_channel , & sa . <S2SV_ModEnd> rc_bdaddr ) ) <S2SV_ModStart> , & sa . <S2SV_ModEnd> rc_bdaddr ) ; <S2SV_ModStart> -> channel = sa . rc_channel <S2SV_ModEnd> ; sk ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11719\n\n```\nCWE-125 static int dnxhd_decode_header ( DNXHDContext * ctx , AVFrame * frame , const uint8_t * buf , int buf_size , int first_field ) { int i , cid , ret ; int old_bit_depth = ctx -> bit_depth , bitdepth ; uint64_t header_prefix ; if ( buf_size < 0x280 ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"buffer<S2SV_blank>too<S2SV_blank>small<S2SV_blank>(%d<S2SV_blank><<S2SV_blank>640).\\\\n\" , buf_size ) ; return AVERROR_INVALIDDATA ; } header_prefix = ff_dnxhd_parse_header_prefix ( buf ) ; if ( header_prefix == 0 ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"unknown<S2SV_blank>header<S2SV_blank>0x%02X<S2SV_blank>0x%02X<S2SV_blank>0x%02X<S2SV_blank>0x%02X<S2SV_blank>0x%02X\\\\n\" , buf [ 0 ] , buf [ 1 ] , buf [ 2 ] , buf [ 3 ] , buf [ 4 ] ) ; return AVERROR_INVALIDDATA ; } if ( buf [ 5 ] & 2 ) { ctx -> cur_field = buf [ 5 ] & 1 ; frame -> interlaced_frame = 1 ; frame -> top_field_first = first_field ^ ctx -> cur_field ; av_log ( ctx -> avctx , AV_LOG_DEBUG , \"interlaced<S2SV_blank>%d,<S2SV_blank>cur<S2SV_blank>field<S2SV_blank>%d\\\\n\" , buf [ 5 ] & 3 , ctx -> cur_field ) ; } else { ctx -> cur_field = 0 ; } ctx -> mbaff = ( buf [ 0x6 ] >> 5 ) & 1 ; ctx -> height = AV_RB16 ( buf + 0x18 ) ; ctx -> width = AV_RB16 ( buf + 0x1a ) ; switch ( buf [ 0x21 ] >> 5 ) { case 1 : bitdepth = 8 ; break ; case 2 : bitdepth = 10 ; break ; case 3 : bitdepth = 12 ; break ; default : av_log ( ctx -> avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>bitdepth<S2SV_blank>indicator<S2SV_blank>(%d)\\\\n\" , buf [ 0x21 ] >> 5 ) ; return AVERROR_INVALIDDATA ; } cid = AV_RB32 ( buf + 0x28 ) ; ctx -> avctx -> profile = dnxhd_get_profile ( cid ) ; if ( ( ret = dnxhd_init_vlc ( ctx , cid , bitdepth ) ) < 0 ) return ret ; if ( ctx -> mbaff && ctx -> cid_table -> cid != 1260 ) av_log ( ctx -> avctx , AV_LOG_WARNING , \"Adaptive<S2SV_blank>MB<S2SV_blank>interlace<S2SV_blank>flag<S2SV_blank>in<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>profile.\\\\n\" ) ; ctx -> act = buf [ 0x2C ] & 7 ; if ( ctx -> act && ctx -> cid_table -> cid != 1256 && ctx -> cid_table -> cid != 1270 ) av_log ( ctx -> avctx , AV_LOG_WARNING , \"Adaptive<S2SV_blank>color<S2SV_blank>transform<S2SV_blank>in<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>profile.\\\\n\" ) ; ctx -> is_444 = ( buf [ 0x2C ] >> 6 ) & 1 ; if ( ctx -> is_444 ) { if ( bitdepth == 8 ) { avpriv_request_sample ( ctx -> avctx , \"4:4:4<S2SV_blank>8<S2SV_blank>bits\" ) ; return AVERROR_INVALIDDATA ; } else if ( bitdepth == 10 ) { ctx -> decode_dct_block = dnxhd_decode_dct_block_10_444 ; ctx -> pix_fmt = ctx -> act ? AV_PIX_FMT_YUV444P10 : AV_PIX_FMT_GBRP10 ; } else { ctx -> decode_dct_block = dnxhd_decode_dct_block_12_444 ; ctx -> pix_fmt = ctx -> act ? AV_PIX_FMT_YUV444P12 : AV_PIX_FMT_GBRP12 ; } } else if ( bitdepth == 12 ) { ctx -> decode_dct_block = dnxhd_decode_dct_block_12 ; ctx -> pix_fmt = AV_PIX_FMT_YUV422P12 ; } else if ( bitdepth == 10 ) { if ( ctx -> avctx -> profile == FF_PROFILE_DNXHR_HQX ) ctx -> decode_dct_block = dnxhd_decode_dct_block_10_444 ; else ctx -> decode_dct_block = dnxhd_decode_dct_block_10 ; ctx -> pix_fmt = AV_PIX_FMT_YUV422P10 ; } else { ctx -> decode_dct_block = dnxhd_decode_dct_block_8 ; ctx -> pix_fmt = AV_PIX_FMT_YUV422P ; } ctx -> avctx -> bits_per_raw_sample = ctx -> bit_depth = bitdepth ; if ( ctx -> bit_depth != old_bit_depth ) { ff_blockdsp_init ( & ctx -> bdsp , ctx -> avctx ) ; ff_idctdsp_init ( & ctx -> idsp , ctx -> avctx ) ; ff_init_scantable ( ctx -> idsp . idct_permutation , & ctx -> scantable , ff_zigzag_direct ) ; } if ( ctx -> width != ctx -> cid_table -> width && ctx -> cid_table -> width != DNXHD_VARIABLE ) { av_reduce ( & ctx -> avctx -> sample_aspect_ratio . num , & ctx -> avctx -> sample_aspect_ratio . den , ctx -> width , ctx -> cid_table -> width , 255 ) ; ctx -> width = ctx -> cid_table -> width ; } if ( buf_size < ctx -> cid_table -> coding_unit_size ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"incorrect<S2SV_blank>frame<S2SV_blank>size<S2SV_blank>(%d<S2SV_blank><<S2SV_blank>%u).\\\\n\" , buf_size , ctx -> cid_table -> coding_unit_size ) ; return AVERROR_INVALIDDATA ; } ctx -> mb_width = ( ctx -> width + 15 ) >> 4 ; ctx -> mb_height = AV_RB16 ( buf + 0x16c ) ; if ( ( ctx -> height + 15 ) >> 4 == ctx -> mb_height && frame -> interlaced_frame ) ctx -> height <<= 1 ; av_log ( ctx -> avctx , AV_LOG_VERBOSE , \"%dx%d,<S2SV_blank>4:%s<S2SV_blank>%d<S2SV_blank>bits,<S2SV_blank>MBAFF=%d<S2SV_blank>ACT=%d\\\\n\" , ctx -> width , ctx -> height , ctx -> is_444 ? \"4:4\" : \"2:2\" , ctx -> bit_depth , ctx -> mbaff , ctx -> act ) ; if ( ctx -> mb_height > 68 && ff_dnxhd_check_header_prefix_hr ( header_prefix ) ) { ctx -> data_offset = 0x170 + ( ctx -> mb_height << 2 ) ; } else { <S2SV_StartBug> if ( ctx -> mb_height > 68 || <S2SV_EndBug> ( ctx -> mb_height << frame -> interlaced_frame ) > ( ctx -> height + 15 ) >> 4 ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"mb<S2SV_blank>height<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%d\\\\n\" , ctx -> mb_height ) ; return AVERROR_INVALIDDATA ; } <S2SV_StartBug> ctx -> data_offset = 0x280 ; <S2SV_EndBug> } if ( buf_size < ctx -> data_offset ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"buffer<S2SV_blank>too<S2SV_blank>small<S2SV_blank>(%d<S2SV_blank><<S2SV_blank>%d).\\\\n\" , buf_size , ctx -> data_offset ) ; return AVERROR_INVALIDDATA ; } if ( ctx -> mb_height > FF_ARRAY_ELEMS ( ctx -> mb_scan_index ) ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"mb_height<S2SV_blank>too<S2SV_blank>big<S2SV_blank>(%d<S2SV_blank>><S2SV_blank>%\" SIZE_SPECIFIER \").\\\\n\" , ctx -> mb_height , FF_ARRAY_ELEMS ( ctx -> mb_scan_index ) ) ; return AVERROR_INVALIDDATA ; } for ( i = 0 ; i < ctx -> mb_height ; i ++ ) { ctx -> mb_scan_index [ i ] = AV_RB32 ( buf + 0x170 + ( i << 2 ) ) ; ff_dlog ( ctx -> avctx , \"mb<S2SV_blank>scan<S2SV_blank>index<S2SV_blank>%d,<S2SV_blank>pos<S2SV_blank>%d:<S2SV_blank>%\" PRIu32 \"\\\\n\" , i , 0x170 + ( i << 2 ) , ctx -> mb_scan_index [ i ] ) ; if ( buf_size - ctx -> data_offset < ctx -> mb_scan_index [ i ] ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"invalid<S2SV_blank>mb<S2SV_blank>scan<S2SV_blank>index<S2SV_blank>(%\" PRIu32 \"<S2SV_blank>vs<S2SV_blank>%u).\\\\n\" , ctx -> mb_scan_index [ i ] , buf_size - ctx -> data_offset ) ; return AVERROR_INVALIDDATA ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mb_height > 68 ) { av_log ( ctx -> avctx , AV_LOG_ERROR , \"mb<S2SV_blank>height<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%d\\\\n\" , ctx -> mb_height ) ; return AVERROR_INVALIDDATA ; } ctx -> data_offset = 0x280 ; } if ( <S2SV_ModEnd> ( ctx -> <S2SV_ModStart> AVERROR_INVALIDDATA ; } <S2SV_ModEnd> if ( buf_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18079\n\n```\nCWE-476 static irqreturn_t i8042_interrupt ( int irq , void * dev_id ) { struct i8042_port * port ; struct serio * serio ; unsigned long flags ; unsigned char str , data ; unsigned int dfl ; unsigned int port_no ; bool filtered ; int ret = 1 ; spin_lock_irqsave ( & i8042_lock , flags ) ; str = i8042_read_status ( ) ; if ( unlikely ( ~ str & I8042_STR_OBF ) ) { spin_unlock_irqrestore ( & i8042_lock , flags ) ; if ( irq ) dbg ( \"Interrupt<S2SV_blank>%d,<S2SV_blank>without<S2SV_blank>any<S2SV_blank>data\\\\n\" , irq ) ; ret = 0 ; goto out ; } data = i8042_read_data ( ) ; if ( i8042_mux_present && ( str & I8042_STR_AUXDATA ) ) { static unsigned long last_transmit ; static unsigned char last_str ; dfl = 0 ; if ( str & I8042_STR_MUXERR ) { dbg ( \"MUX<S2SV_blank>error,<S2SV_blank>status<S2SV_blank>is<S2SV_blank>%02x,<S2SV_blank>data<S2SV_blank>is<S2SV_blank>%02x\\\\n\" , str , data ) ; switch ( data ) { default : if ( time_before ( jiffies , last_transmit + HZ / 10 ) ) { str = last_str ; break ; } case 0xfc : case 0xfd : case 0xfe : dfl = SERIO_TIMEOUT ; data = 0xfe ; break ; case 0xff : dfl = SERIO_PARITY ; data = 0xfe ; break ; } } port_no = I8042_MUX_PORT_NO + ( ( str >> 6 ) & 3 ) ; last_str = str ; last_transmit = jiffies ; } else { dfl = ( ( str & I8042_STR_PARITY ) ? SERIO_PARITY : 0 ) | ( ( str & I8042_STR_TIMEOUT && ! i8042_notimeout ) ? SERIO_TIMEOUT : 0 ) ; port_no = ( str & I8042_STR_AUXDATA ) ? I8042_AUX_PORT_NO : I8042_KBD_PORT_NO ; } port = & i8042_ports [ port_no ] ; serio = port -> exists ? port -> serio : NULL ; filter_dbg ( port -> driver_bound , data , \"<-<S2SV_blank>i8042<S2SV_blank>(interrupt,<S2SV_blank>%d,<S2SV_blank>%d%s%s)\\\\n\" , port_no , irq , dfl & SERIO_PARITY ? \",<S2SV_blank>bad<S2SV_blank>parity\" : \"\" , dfl & SERIO_TIMEOUT ? \",<S2SV_blank>timeout\" : \"\" ) ; filtered = i8042_filter ( data , str , serio ) ; spin_unlock_irqrestore ( & i8042_lock , flags ) ; <S2SV_StartBug> if ( likely ( port -> exists && ! filtered ) ) <S2SV_EndBug> serio_interrupt ( serio , data , dfl ) ; out : return IRQ_RETVAL ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( likely ( serio <S2SV_ModEnd> && ! filtered\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10065\n\n```\nCWE-284 static void ImportGrayQuantum ( const Image * image , QuantumInfo * quantum_info , const MagickSizeType number_pixels , const unsigned char * magick_restrict p , Quantum * magick_restrict q , ExceptionInfo * exception ) { QuantumAny range ; register ssize_t x ; ssize_t bit ; unsigned int pixel ; assert ( image != ( Image * ) NULL ) ; assert ( image -> signature == MagickCoreSignature ) ; <S2SV_StartBug> switch ( quantum_info -> depth ) <S2SV_EndBug> { case 1 : { register Quantum black , white ; black = 0 ; white = QuantumRange ; if ( quantum_info -> min_is_white != MagickFalse ) { black = QuantumRange ; white = 0 ; } for ( x = 0 ; x < ( ( ssize_t ) number_pixels - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { SetPixelGray ( image , ( ( * p ) & ( 1 << ( 7 - bit ) ) ) == 0 ? black : white , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } for ( bit = 0 ; bit < ( ssize_t ) ( number_pixels % 8 ) ; bit ++ ) { SetPixelGray ( image , ( ( * p ) & ( 0x01 << ( 7 - bit ) ) ) == 0 ? black : white , q ) ; q += GetPixelChannels ( image ) ; } if ( bit != 0 ) p ++ ; break ; } case 4 : { register unsigned char pixel ; range = GetQuantumRange ( quantum_info -> depth ) ; for ( x = 0 ; x < ( ( ssize_t ) number_pixels - 1 ) ; x += 2 ) { pixel = ( unsigned char ) ( ( * p >> 4 ) & 0xf ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; q += GetPixelChannels ( image ) ; pixel = ( unsigned char ) ( ( * p ) & 0xf ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p ++ ; q += GetPixelChannels ( image ) ; } for ( bit = 0 ; bit < ( ssize_t ) ( number_pixels % 2 ) ; bit ++ ) { pixel = ( unsigned char ) ( * p ++ >> 4 ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } case 8 : { unsigned char pixel ; if ( quantum_info -> min_is_white != MagickFalse ) { for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushCharPixel ( p , & pixel ) ; SetPixelGray ( image , ScaleCharToQuantum ( pixel ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushCharPixel ( p , & pixel ) ; SetPixelGray ( image , ScaleCharToQuantum ( pixel ) , q ) ; SetPixelAlpha ( image , OpaqueAlpha , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 10 : { range = GetQuantumRange ( quantum_info -> depth ) ; if ( quantum_info -> pack == MagickFalse ) { if ( image -> endian == LSBEndian ) { for ( x = 0 ; x < ( ssize_t ) ( number_pixels - 2 ) ; x += 3 ) { p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 22 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 12 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 2 ) & 0x3ff , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; if ( x ++ < ( ssize_t ) ( number_pixels - 1 ) ) { SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 22 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; } if ( x ++ < ( ssize_t ) number_pixels ) { SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 12 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) ( number_pixels - 2 ) ; x += 3 ) { p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 2 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 12 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 22 ) & 0x3ff , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; if ( x ++ < ( ssize_t ) ( number_pixels - 1 ) ) { SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 2 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; } if ( x ++ < ( ssize_t ) number_pixels ) { SetPixelGray ( image , ScaleAnyToQuantum ( ( pixel >> 12 ) & 0x3ff , range ) , q ) ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 12 : { range = GetQuantumRange ( quantum_info -> depth ) ; if ( quantum_info -> pack == MagickFalse ) { unsigned short pixel ; for ( x = 0 ; x < ( ssize_t ) ( number_pixels - 1 ) ; x += 2 ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( QuantumAny ) ( pixel >> 4 ) , range ) , q ) ; q += GetPixelChannels ( image ) ; p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( QuantumAny ) ( pixel >> 4 ) , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } for ( bit = 0 ; bit < ( ssize_t ) ( number_pixels % 2 ) ; bit ++ ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( ( QuantumAny ) ( pixel >> 4 ) , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } if ( bit != 0 ) p ++ ; break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 16 : { unsigned short pixel ; if ( quantum_info -> min_is_white != MagickFalse ) { for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleShortToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } if ( quantum_info -> format == FloatingPointQuantumFormat ) { for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ClampToQuantum ( QuantumRange * HalfToSinglePrecision ( pixel ) ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushShortPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleShortToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 32 : { unsigned int pixel ; if ( quantum_info -> format == FloatingPointQuantumFormat ) { float pixel ; for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushFloatPixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ClampToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushLongPixel ( quantum_info -> endian , p , & pixel ) ; SetPixelGray ( image , ScaleLongToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } case 64 : { if ( quantum_info -> format == FloatingPointQuantumFormat ) { double pixel ; for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushDoublePixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ClampToQuantum ( pixel ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } } default : { range = GetQuantumRange ( quantum_info -> depth ) ; for ( x = 0 ; x < ( ssize_t ) number_pixels ; x ++ ) { p = PushQuantumPixel ( quantum_info , p , & pixel ) ; SetPixelGray ( image , ScaleAnyToQuantum ( pixel , range ) , q ) ; p += quantum_info -> pad ; q += GetPixelChannels ( image ) ; } break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> MagickCoreSignature ) ; pixel = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 key_ref_t lookup_user_key ( key_serial_t id , unsigned long lflags , key_perm_t perm ) { struct keyring_search_context ctx = { . match_data . cmp = lookup_user_key_possessed , . match_data . lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT , . flags = KEYRING_SEARCH_NO_STATE_CHECK , } ; struct request_key_auth * rka ; struct key * key ; key_ref_t key_ref , skey_ref ; int ret ; try_again : ctx . cred = get_current_cred ( ) ; key_ref = ERR_PTR ( - ENOKEY ) ; switch ( id ) { case KEY_SPEC_THREAD_KEYRING : if ( ! ctx . cred -> thread_keyring ) { if ( ! ( lflags & KEY_LOOKUP_CREATE ) ) goto error ; ret = install_thread_keyring ( ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error ; } goto reget_creds ; } key = ctx . cred -> thread_keyring ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_PROCESS_KEYRING : if ( ! ctx . cred -> process_keyring ) { if ( ! ( lflags & KEY_LOOKUP_CREATE ) ) goto error ; ret = install_process_keyring ( ) ; if ( ret < 0 ) { key_ref = ERR_PTR ( ret ) ; goto error ; } goto reget_creds ; } key = ctx . cred -> process_keyring ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_SESSION_KEYRING : if ( ! ctx . cred -> session_keyring ) { ret = install_user_keyrings ( ) ; if ( ret < 0 ) goto error ; if ( lflags & KEY_LOOKUP_CREATE ) ret = join_session_keyring ( NULL ) ; else ret = install_session_keyring ( ctx . cred -> user -> session_keyring ) ; if ( ret < 0 ) goto error ; goto reget_creds ; } else if ( ctx . cred -> session_keyring == ctx . cred -> user -> session_keyring && lflags & KEY_LOOKUP_CREATE ) { ret = join_session_keyring ( NULL ) ; if ( ret < 0 ) goto error ; goto reget_creds ; } rcu_read_lock ( ) ; key = rcu_dereference ( ctx . cred -> session_keyring ) ; __key_get ( key ) ; rcu_read_unlock ( ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_USER_KEYRING : if ( ! ctx . cred -> user -> uid_keyring ) { ret = install_user_keyrings ( ) ; if ( ret < 0 ) goto error ; } key = ctx . cred -> user -> uid_keyring ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_USER_SESSION_KEYRING : if ( ! ctx . cred -> user -> session_keyring ) { ret = install_user_keyrings ( ) ; if ( ret < 0 ) goto error ; } key = ctx . cred -> user -> session_keyring ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_GROUP_KEYRING : key_ref = ERR_PTR ( - EINVAL ) ; goto error ; case KEY_SPEC_REQKEY_AUTH_KEY : key = ctx . cred -> request_key_auth ; if ( ! key ) goto error ; __key_get ( key ) ; key_ref = make_key_ref ( key , 1 ) ; break ; case KEY_SPEC_REQUESTOR_KEYRING : if ( ! ctx . cred -> request_key_auth ) goto error ; down_read ( & ctx . cred -> request_key_auth -> sem ) ; if ( test_bit ( KEY_FLAG_REVOKED , & ctx . cred -> request_key_auth -> flags ) ) { key_ref = ERR_PTR ( - EKEYREVOKED ) ; key = NULL ; } else { rka = ctx . cred -> request_key_auth -> payload . data [ 0 ] ; key = rka -> dest_keyring ; __key_get ( key ) ; } up_read ( & ctx . cred -> request_key_auth -> sem ) ; if ( ! key ) goto error ; key_ref = make_key_ref ( key , 1 ) ; break ; default : key_ref = ERR_PTR ( - EINVAL ) ; if ( id < 1 ) goto error ; key = key_lookup ( id ) ; if ( IS_ERR ( key ) ) { key_ref = ERR_CAST ( key ) ; goto error ; } key_ref = make_key_ref ( key , 0 ) ; ctx . index_key . type = key -> type ; ctx . index_key . description = key -> description ; ctx . index_key . desc_len = strlen ( key -> description ) ; ctx . match_data . raw_data = key ; kdebug ( \"check<S2SV_blank>possessed\" ) ; skey_ref = search_process_keyrings ( & ctx ) ; kdebug ( \"possessed=%p\" , skey_ref ) ; if ( ! IS_ERR ( skey_ref ) ) { key_put ( key ) ; key_ref = skey_ref ; } break ; } if ( lflags & KEY_LOOKUP_FOR_UNLINK ) { ret = 0 ; goto error ; } if ( ! ( lflags & KEY_LOOKUP_PARTIAL ) ) { ret = wait_for_key_construction ( key , true ) ; switch ( ret ) { case - ERESTARTSYS : goto invalid_key ; default : if ( perm ) goto invalid_key ; case 0 : break ; } } else if ( perm ) { ret = key_validate ( key ) ; if ( ret < 0 ) goto invalid_key ; } ret = - EIO ; if ( ! ( lflags & KEY_LOOKUP_PARTIAL ) && <S2SV_StartBug> ! test_bit ( KEY_FLAG_INSTANTIATED , & key -> flags ) ) <S2SV_EndBug> goto invalid_key ; ret = key_task_permission ( key_ref , ctx . cred , perm ) ; if ( ret < 0 ) goto invalid_key ; key -> last_used_at = current_kernel_time ( ) . tv_sec ; error : put_cred ( ctx . cred ) ; return key_ref ; invalid_key : key_ref_put ( key_ref ) ; key_ref = ERR_PTR ( ret ) ; goto error ; reget_creds : put_cred ( ctx . cred ) ; goto try_again ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> KEY_LOOKUP_PARTIAL ) && key_read_state ( key ) == KEY_IS_UNINSTANTIATED <S2SV_ModEnd> ) goto invalid_key\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyObject * ast2obj_expr ( void * _o ) { expr_ty o = ( expr_ty ) _o ; PyObject * result = NULL , * value = NULL ; if ( ! o ) { <S2SV_StartBug> Py_INCREF ( Py_None ) ; <S2SV_EndBug> return Py_None ; } switch ( o -> kind ) { case BoolOp_kind : result = PyType_GenericNew ( BoolOp_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_boolop ( o -> v . BoolOp . op ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_op , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . BoolOp . values , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_values , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case BinOp_kind : result = PyType_GenericNew ( BinOp_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . BinOp . left ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_left , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_operator ( o -> v . BinOp . op ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_op , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . BinOp . right ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_right , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case UnaryOp_kind : result = PyType_GenericNew ( UnaryOp_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_unaryop ( o -> v . UnaryOp . op ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_op , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . UnaryOp . operand ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_operand , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Lambda_kind : result = PyType_GenericNew ( Lambda_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_arguments ( o -> v . Lambda . args ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_args , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . Lambda . body ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case IfExp_kind : result = PyType_GenericNew ( IfExp_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . IfExp . test ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_test , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . IfExp . body ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_body , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . IfExp . orelse ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_orelse , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Dict_kind : result = PyType_GenericNew ( Dict_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Dict . keys , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_keys , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Dict . values , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_values , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Set_kind : result = PyType_GenericNew ( Set_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Set . elts , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_elts , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case ListComp_kind : result = PyType_GenericNew ( ListComp_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . ListComp . elt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_elt , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . ListComp . generators , ast2obj_comprehension ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_generators , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case SetComp_kind : result = PyType_GenericNew ( SetComp_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . SetComp . elt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_elt , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . SetComp . generators , ast2obj_comprehension ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_generators , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case DictComp_kind : result = PyType_GenericNew ( DictComp_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . DictComp . key ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_key , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . DictComp . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . DictComp . generators , ast2obj_comprehension ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_generators , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case GeneratorExp_kind : result = PyType_GenericNew ( GeneratorExp_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . GeneratorExp . elt ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_elt , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . GeneratorExp . generators , ast2obj_comprehension ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_generators , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Await_kind : result = PyType_GenericNew ( Await_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Await . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Yield_kind : result = PyType_GenericNew ( Yield_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Yield . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case YieldFrom_kind : result = PyType_GenericNew ( YieldFrom_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . YieldFrom . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Compare_kind : result = PyType_GenericNew ( Compare_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Compare . left ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_left , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; { Py_ssize_t i , n = asdl_seq_LEN ( o -> v . Compare . ops ) ; value = PyList_New ( n ) ; if ( ! value ) goto failed ; for ( i = 0 ; i < n ; i ++ ) PyList_SET_ITEM ( value , i , ast2obj_cmpop ( ( cmpop_ty ) asdl_seq_GET ( o -> v . Compare . ops , i ) ) ) ; } if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_ops , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Compare . comparators , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_comparators , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Call_kind : result = PyType_GenericNew ( Call_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Call . func ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_func , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Call . args , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_args , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_list ( o -> v . Call . keywords , ast2obj_keyword ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_keywords , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Num_kind : result = PyType_GenericNew ( Num_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_object ( o -> v . Num . n ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_n , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Str_kind : result = PyType_GenericNew ( Str_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_string ( o -> v . Str . s ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_s , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_string ( o -> v . Str . kind ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_kind , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case FormattedValue_kind : result = PyType_GenericNew ( FormattedValue_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . FormattedValue . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> v . FormattedValue . conversion ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_conversion , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr ( o -> v . FormattedValue . format_spec ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_format_spec , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case JoinedStr_kind : result = PyType_GenericNew ( JoinedStr_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . JoinedStr . values , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_values , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Bytes_kind : result = PyType_GenericNew ( Bytes_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_bytes ( o -> v . Bytes . s ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_s , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case NameConstant_kind : result = PyType_GenericNew ( NameConstant_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_singleton ( o -> v . NameConstant . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Ellipsis_kind : result = PyType_GenericNew ( Ellipsis_type , NULL , NULL ) ; if ( ! result ) goto failed ; break ; case Constant_kind : result = PyType_GenericNew ( Constant_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_constant ( o -> v . Constant . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Attribute_kind : result = PyType_GenericNew ( Attribute_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Attribute . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_identifier ( o -> v . Attribute . attr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_attr , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr_context ( o -> v . Attribute . ctx ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_ctx , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Subscript_kind : result = PyType_GenericNew ( Subscript_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Subscript . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_slice ( o -> v . Subscript . slice ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_slice , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr_context ( o -> v . Subscript . ctx ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_ctx , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Starred_kind : result = PyType_GenericNew ( Starred_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_expr ( o -> v . Starred . value ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_value , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr_context ( o -> v . Starred . ctx ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_ctx , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Name_kind : result = PyType_GenericNew ( Name_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_identifier ( o -> v . Name . id ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_id , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr_context ( o -> v . Name . ctx ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_ctx , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case List_kind : result = PyType_GenericNew ( List_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . List . elts , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_elts , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr_context ( o -> v . List . ctx ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_ctx , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; case Tuple_kind : result = PyType_GenericNew ( Tuple_type , NULL , NULL ) ; if ( ! result ) goto failed ; value = ast2obj_list ( o -> v . Tuple . elts , ast2obj_expr ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_elts , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_expr_context ( o -> v . Tuple . ctx ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_ctx , value ) == - 1 ) goto failed ; Py_DECREF ( value ) ; break ; } value = ast2obj_int ( o -> lineno ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_lineno , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; value = ast2obj_int ( o -> col_offset ) ; if ( ! value ) goto failed ; if ( _PyObject_SetAttrId ( result , & PyId_col_offset , value ) < 0 ) goto failed ; Py_DECREF ( value ) ; return result ; failed : Py_XDECREF ( value ) ; Py_XDECREF ( result ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o ) { Py_RETURN_NONE <S2SV_ModEnd> ; } switch\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t vp8_decode ( vpx_codec_alg_priv_t * ctx , const uint8_t * data , unsigned int data_sz , void * user_priv , long deadline ) { vpx_codec_err_t res = VPX_CODEC_OK ; unsigned int resolution_change = 0 ; unsigned int w , h ; <S2SV_StartBug> if ( update_fragments ( ctx , data , data_sz , & res ) <= 0 ) <S2SV_EndBug> return res ; w = ctx -> si . w ; h = ctx -> si . h ; res = vp8_peek_si_internal ( ctx -> fragments . ptrs [ 0 ] , ctx -> fragments . sizes [ 0 ] , & ctx -> si , ctx -> decrypt_cb , ctx -> decrypt_state ) ; if ( ( res == VPX_CODEC_UNSUP_BITSTREAM ) && ! ctx -> si . is_kf ) { res = VPX_CODEC_OK ; } if ( ! ctx -> decoder_init && ! ctx -> si . is_kf ) res = VPX_CODEC_UNSUP_BITSTREAM ; if ( ( ctx -> si . h != h ) || ( ctx -> si . w != w ) ) resolution_change = 1 ; <S2SV_StartBug> if ( ! res && ctx -> defer_alloc ) <S2SV_EndBug> { int i ; for ( i = 1 ; ! res && i < NELEMENTS ( ctx -> mmaps ) ; i ++ ) { vpx_codec_dec_cfg_t cfg ; cfg . w = ctx -> si . w ; cfg . h = ctx -> si . h ; ctx -> mmaps [ i ] . id = vp8_mem_req_segs [ i ] . id ; ctx -> mmaps [ i ] . sz = vp8_mem_req_segs [ i ] . sz ; ctx -> mmaps [ i ] . align = vp8_mem_req_segs [ i ] . align ; ctx -> mmaps [ i ] . flags = vp8_mem_req_segs [ i ] . flags ; if ( ! ctx -> mmaps [ i ] . sz ) ctx -> mmaps [ i ] . sz = vp8_mem_req_segs [ i ] . calc_sz ( & cfg , ctx -> base . init_flags ) ; res = vpx_mmap_alloc ( & ctx -> mmaps [ i ] ) ; } if ( ! res ) vp8_finalize_mmaps ( ctx ) ; ctx -> defer_alloc = 0 ; } <S2SV_StartBug> if ( ! res && ! ctx -> decoder_init ) <S2SV_EndBug> { res = vpx_validate_mmaps ( & ctx -> si , ctx -> mmaps , vp8_mem_req_segs , NELEMENTS ( vp8_mem_req_segs ) , ctx -> base . init_flags ) ; if ( ! res ) { VP8D_CONFIG oxcf ; oxcf . Width = ctx -> si . w ; oxcf . Height = ctx -> si . h ; oxcf . Version = 9 ; oxcf . postprocess = 0 ; oxcf . max_threads = ctx -> cfg . threads ; oxcf . error_concealment = ( ctx -> base . init_flags & VPX_CODEC_USE_ERROR_CONCEALMENT ) ; if ( ! ctx -> postproc_cfg_set && ( ctx -> base . init_flags & VPX_CODEC_USE_POSTPROC ) ) { ctx -> postproc_cfg . post_proc_flag = VP8_DEBLOCK | VP8_DEMACROBLOCK | VP8_MFQE ; ctx -> postproc_cfg . deblocking_level = 4 ; ctx -> postproc_cfg . noise_level = 0 ; } res = vp8_create_decoder_instances ( & ctx -> yv12_frame_buffers , & oxcf ) ; <S2SV_StartBug> ctx -> yv12_frame_buffers . pbi [ 0 ] -> decrypt_cb = ctx -> decrypt_cb ; <S2SV_EndBug> <S2SV_StartBug> ctx -> yv12_frame_buffers . pbi [ 0 ] -> decrypt_state = ctx -> decrypt_state ; <S2SV_EndBug> } ctx -> decoder_init = 1 ; } if ( ! res ) { VP8D_COMP * pbi = ctx -> yv12_frame_buffers . pbi [ 0 ] ; if ( resolution_change ) { VP8_COMMON * const pc = & pbi -> common ; MACROBLOCKD * const xd = & pbi -> mb ; # if CONFIG_MULTITHREAD int i ; # endif pc -> Width = ctx -> si . w ; pc -> Height = ctx -> si . h ; { int prev_mb_rows = pc -> mb_rows ; if ( setjmp ( pbi -> common . error . jmp ) ) { pbi -> common . error . setjmp = 0 ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } pbi -> common . error . setjmp = 1 ; if ( pc -> Width <= 0 ) { pc -> Width = w ; vpx_internal_error ( & pc -> error , VPX_CODEC_CORRUPT_FRAME , \"Invalid<S2SV_blank>frame<S2SV_blank>width\" ) ; } if ( pc -> Height <= 0 ) { pc -> Height = h ; vpx_internal_error ( & pc -> error , VPX_CODEC_CORRUPT_FRAME , \"Invalid<S2SV_blank>frame<S2SV_blank>height\" ) ; } if ( vp8_alloc_frame_buffers ( pc , pc -> Width , pc -> Height ) ) vpx_internal_error ( & pc -> error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>frame<S2SV_blank>buffers\" ) ; xd -> pre = pc -> yv12_fb [ pc -> lst_fb_idx ] ; xd -> dst = pc -> yv12_fb [ pc -> new_fb_idx ] ; # if CONFIG_MULTITHREAD for ( i = 0 ; i < pbi -> allocated_decoding_thread_count ; i ++ ) { pbi -> mb_row_di [ i ] . mbd . dst = pc -> yv12_fb [ pc -> new_fb_idx ] ; vp8_build_block_doffsets ( & pbi -> mb_row_di [ i ] . mbd ) ; } # endif vp8_build_block_doffsets ( & pbi -> mb ) ; # if CONFIG_ERROR_CONCEALMENT if ( pbi -> ec_enabled ) { pc -> prev_mip = vpx_calloc ( ( pc -> mb_cols + 1 ) * ( pc -> mb_rows + 1 ) , sizeof ( MODE_INFO ) ) ; if ( ! pc -> prev_mip ) { vp8_de_alloc_frame_buffers ( pc ) ; vpx_internal_error ( & pc -> error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate\" \"last<S2SV_blank>frame<S2SV_blank>MODE_INFO<S2SV_blank>array\" ) ; } pc -> prev_mi = pc -> prev_mip + pc -> mode_info_stride + 1 ; if ( vp8_alloc_overlap_lists ( pbi ) ) vpx_internal_error ( & pc -> error , VPX_CODEC_MEM_ERROR , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>overlap<S2SV_blank>lists<S2SV_blank>\" \"for<S2SV_blank>error<S2SV_blank>concealment\" ) ; } # endif # if CONFIG_MULTITHREAD if ( pbi -> b_multithreaded_rd ) vp8mt_alloc_temp_buffers ( pbi , pc -> Width , prev_mb_rows ) ; # else ( void ) prev_mb_rows ; # endif } pbi -> common . error . setjmp = 0 ; pbi -> common . fb_idx_ref_cnt [ 0 ] = 0 ; } pbi -> fragments = ctx -> fragments ; ctx -> user_priv = user_priv ; if ( vp8dx_receive_compressed_data ( pbi , data_sz , data , deadline ) ) { res = update_error_state ( ctx , & pbi -> common . error ) ; } ctx -> fragments . count = 0 ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! ctx -> fragments . enabled && ( data == NULL && data_sz == 0 ) ) { return 0 ; } if ( <S2SV_ModStart> ! res && ! <S2SV_ModEnd> ctx -> decoder_init <S2SV_ModStart> ctx -> decoder_init <S2SV_ModEnd> ) { VP8D_CONFIG <S2SV_ModStart> ; ctx -> decoder_init = 1 ; } if ( ctx -> decoder_init ) { ctx -> <S2SV_ModStart> ctx -> decrypt_state <S2SV_ModEnd> ; } if <S2SV_ModStart> = 0 ; vp8_clear_system_state ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6817\n\n```\nCWE-287 static void start_auth_request ( PgSocket * client , const char * username ) { int res ; PktBuf * buf ; <S2SV_StartBug> client -> auth_user = client -> db -> auth_user ; <S2SV_EndBug> client -> pool = get_pool ( client -> db , client -> db -> auth_user ) ; if ( ! find_server ( client ) ) { client -> wait_for_user_conn = true ; return ; } slog_noise ( client , \"Doing<S2SV_blank>auth_conn<S2SV_blank>query\" ) ; client -> wait_for_user_conn = false ; client -> wait_for_user = true ; if ( ! sbuf_pause ( & client -> sbuf ) ) { release_server ( client -> link ) ; disconnect_client ( client , true , \"pause<S2SV_blank>failed\" ) ; return ; } client -> link -> ready = 0 ; res = 0 ; buf = pktbuf_dynamic ( 512 ) ; if ( buf ) { pktbuf_write_ExtQuery ( buf , cf_auth_query , 1 , username ) ; res = pktbuf_send_immediate ( buf , client -> link ) ; pktbuf_free ( buf ) ; } if ( ! res ) disconnect_server ( client -> link , false , \"unable<S2SV_blank>to<S2SV_blank>send<S2SV_blank>login<S2SV_blank>query\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; client -> <S2SV_ModEnd> pool = get_pool\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_refining_search_sad_c ( MACROBLOCK * x , BLOCK * b , BLOCKD * d , int_mv * ref_mv , int error_per_bit , int search_range , vp8_variance_fn_ptr_t * fn_ptr , int * mvcost [ 2 ] , int_mv * center_mv ) { MV neighbors [ 4 ] = { { - 1 , 0 } , { 0 , - 1 } , { 0 , 1 } , { 1 , 0 } } ; int i , j ; short this_row_offset , this_col_offset ; int what_stride = b -> src_stride ; int pre_stride = x -> e_mbd . pre . y_stride ; unsigned char * base_pre = x -> e_mbd . pre . y_buffer ; int in_what_stride = pre_stride ; unsigned char * what = ( * ( b -> base_src ) + b -> src ) ; unsigned char * best_address = ( unsigned char * ) ( base_pre + d -> offset + ( ref_mv -> as_mv . row * pre_stride ) + ref_mv -> as_mv . col ) ; unsigned char * check_here ; int_mv this_mv ; unsigned int bestsad ; unsigned int thissad ; int * mvsadcost [ 2 ] ; int_mv fcenter_mv ; mvsadcost [ 0 ] = x -> mvsadcost [ 0 ] ; mvsadcost [ 1 ] = x -> mvsadcost [ 1 ] ; fcenter_mv . as_mv . row = center_mv -> as_mv . row >> 3 ; fcenter_mv . as_mv . col = center_mv -> as_mv . col >> 3 ; bestsad = fn_ptr -> sdf ( what , what_stride , best_address , <S2SV_StartBug> in_what_stride , UINT_MAX ) <S2SV_EndBug> + mvsad_err_cost ( ref_mv , & fcenter_mv , mvsadcost , error_per_bit ) ; for ( i = 0 ; i < search_range ; i ++ ) { int best_site = - 1 ; for ( j = 0 ; j < 4 ; j ++ ) { this_row_offset = ref_mv -> as_mv . row + neighbors [ j ] . row ; this_col_offset = ref_mv -> as_mv . col + neighbors [ j ] . col ; if ( ( this_col_offset > x -> mv_col_min ) && ( this_col_offset < x -> mv_col_max ) && ( this_row_offset > x -> mv_row_min ) && ( this_row_offset < x -> mv_row_max ) ) { check_here = ( neighbors [ j ] . row ) * in_what_stride + neighbors [ j ] . col + best_address ; <S2SV_StartBug> thissad = fn_ptr -> sdf ( what , what_stride , check_here , in_what_stride , bestsad ) ; <S2SV_EndBug> if ( thissad < bestsad ) { this_mv . as_mv . row = this_row_offset ; this_mv . as_mv . col = this_col_offset ; thissad += mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , error_per_bit ) ; if ( thissad < bestsad ) { bestsad = thissad ; best_site = j ; } } } } if ( best_site == - 1 ) break ; else { ref_mv -> as_mv . row += neighbors [ best_site ] . row ; ref_mv -> as_mv . col += neighbors [ best_site ] . col ; best_address += ( neighbors [ best_site ] . row ) * in_what_stride + neighbors [ best_site ] . col ; } } this_mv . as_mv . row = ref_mv -> as_mv . row << 3 ; this_mv . as_mv . col = ref_mv -> as_mv . col << 3 ; return fn_ptr -> vf ( what , what_stride , best_address , in_what_stride , & thissad ) + mv_err_cost ( & this_mv , center_mv , mvcost , x -> errorperbit ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> best_address , in_what_stride <S2SV_ModEnd> ) + mvsad_err_cost <S2SV_ModStart> check_here , in_what_stride <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t enc28j60Init ( NetInterface * interface ) { uint8_t revisionId ; Enc28j60Context * context ; TRACE_INFO ( \"Initializing<S2SV_blank>ENC28J60<S2SV_blank>Ethernet<S2SV_blank>controller...\\\\r\\\\n\" ) ; interface -> spiDriver -> init ( ) ; interface -> extIntDriver -> init ( ) ; enc28j60SoftReset ( interface ) ; sleep ( 10 ) ; context = ( Enc28j60Context * ) interface -> nicContext ; context -> currentBank = UINT16_MAX ; context -> nextPacket = ENC28J60_RX_BUFFER_START ; context -> rxBuffer = memPoolAlloc ( ETH_MAX_FRAME_SIZE ) ; if ( context -> rxBuffer == NULL ) { return ERROR_OUT_OF_MEMORY ; } <S2SV_StartBug> revisionId = enc28j60ReadReg ( interface , ENC28J60_REG_EREVID ) ; <S2SV_EndBug> TRACE_INFO ( \"ENC28J60<S2SV_blank>revision<S2SV_blank>ID:<S2SV_blank>0x%02X\\\\r\\\\n\" , revisionId ) ; <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ECOCON , 0x00 ) ; <S2SV_EndBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAADR1 , interface -> macAddr . b [ 0 ] ) ; <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAADR2 , interface -> macAddr . b [ 1 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAADR3 , interface -> macAddr . b [ 2 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAADR4 , interface -> macAddr . b [ 3 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAADR5 , interface -> macAddr . b [ 4 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAADR6 , interface -> macAddr . b [ 5 ] ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXSTL , LSB ( ENC28J60_RX_BUFFER_START ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXSTH , MSB ( ENC28J60_RX_BUFFER_START ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXNDL , LSB ( ENC28J60_RX_BUFFER_STOP ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXNDH , MSB ( ENC28J60_RX_BUFFER_STOP ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXRDPTL , LSB ( ENC28J60_RX_BUFFER_STOP ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXRDPTH , MSB ( ENC28J60_RX_BUFFER_STOP ) ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_ERXFCON , ERXFCON_UCEN | <S2SV_EndBug> ERXFCON_CRCEN | ERXFCON_HTEN | ERXFCON_BCEN ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EHT0 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EHT1 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EHT2 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EHT3 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EHT4 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EHT5 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EHT6 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EHT7 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_MACON2 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_MACON1 , MACON1_TXPAUS | MACON1_RXPAUS | MACON1_MARXEN ) ; # if ( ENC28J60_FULL_DUPLEX_SUPPORT == ENABLED ) <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MACON3 , MACON3_PADCFG ( 1 ) | <S2SV_EndBug> MACON3_TXCRCEN | MACON3_FRMLNEN | MACON3_FULDPX ) ; # else <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MACON3 , MACON3_PADCFG ( 1 ) | <S2SV_EndBug> MACON3_TXCRCEN | MACON3_FRMLNEN ) ; # endif <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MACON4 , MACON4_DEFER ) ; <S2SV_EndBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAMXFLL , LSB ( ETH_MAX_FRAME_SIZE ) ) ; <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAMXFLH , MSB ( ETH_MAX_FRAME_SIZE ) ) ; <S2SV_EndBug> # if ( ENC28J60_FULL_DUPLEX_SUPPORT == ENABLED ) <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MABBIPG , 0x15 ) ; <S2SV_EndBug> # else <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MABBIPG , 0x12 ) ; <S2SV_EndBug> # endif <S2SV_StartBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAIPGL , 0x12 ) ; <S2SV_EndBug> enc28j60WriteReg ( interface , ENC28J60_REG_MAIPGH , 0x0C ) ; enc28j60WriteReg ( interface , ENC28J60_REG_MACLCON2 , 63 ) ; # if ( ENC28J60_FULL_DUPLEX_SUPPORT == ENABLED ) <S2SV_StartBug> enc28j60WritePhyReg ( interface , ENC28J60_PHY_REG_PHCON1 , PHCON1_PDPXMD ) ; <S2SV_EndBug> # else <S2SV_StartBug> enc28j60WritePhyReg ( interface , ENC28J60_PHY_REG_PHCON1 , 0x0000 ) ; <S2SV_EndBug> # endif <S2SV_StartBug> enc28j60WritePhyReg ( interface , ENC28J60_PHY_REG_PHCON2 , PHCON2_HDLDIS ) ; <S2SV_EndBug> <S2SV_StartBug> enc28j60WritePhyReg ( interface , ENC28J60_PHY_REG_PHLCON , <S2SV_EndBug> PHLCON_LACFG ( 4 ) | PHLCON_LBCFG ( 7 ) | PHLCON_LFRQ ( 0 ) | PHLCON_STRCH ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EIR , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_REG_EIE , EIE_INTIE | EIE_PKTIE | EIE_LINKIE | EIE_TXIE | EIE_TXERIE ) ; <S2SV_StartBug> enc28j60WritePhyReg ( interface , ENC28J60_PHY_REG_PHIE , <S2SV_EndBug> PHIE_PLNKIE | PHIE_PGEIE ) ; <S2SV_StartBug> enc28j60SetBit ( interface , ENC28J60_REG_ECON1 , ECON1_RXEN ) ; <S2SV_EndBug> enc28j60DumpReg ( interface ) ; enc28j60DumpPhyReg ( interface ) ; osSetEvent ( & interface -> nicTxEvent ) ; interface -> nicEvent = TRUE ; osSetEvent ( & netEvent ) ; return NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC28J60_EREVID <S2SV_ModEnd> ) ; TRACE_INFO <S2SV_ModStart> ( interface , ENC28J60_ECOCON , ENC28J60_ECOCON_COCON_DISABLED ) ; enc28j60WriteReg ( interface , ENC28J60_MAADR5 <S2SV_ModEnd> , interface -> <S2SV_ModStart> ( interface , ENC28J60_MAADR4 <S2SV_ModEnd> , interface -> <S2SV_ModStart> ( interface , ENC28J60_MAADR3 <S2SV_ModEnd> , interface -> <S2SV_ModStart> ( interface , ENC28J60_MAADR2 <S2SV_ModEnd> , interface -> <S2SV_ModStart> ( interface , ENC28J60_MAADR1 <S2SV_ModEnd> , interface -> <S2SV_ModStart> ( interface , ENC28J60_MAADR0 <S2SV_ModEnd> , interface -> <S2SV_ModStart> ( interface , ENC28J60_ERXSTL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXSTH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXNDL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXNDH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXRDPTL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXRDPTH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ( interface , ENC28J60_ERXFCON , ENC28J60_ERXFCON_UCEN | ENC28J60_ERXFCON_CRCEN | ENC28J60_ERXFCON_HTEN | ENC28J60_ERXFCON_BCEN ) ; enc28j60WriteReg ( interface , ENC28J60_EHT0 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_EHT1 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_EHT2 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_EHT3 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_EHT4 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_EHT5 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_EHT6 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_EHT7 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_MACON2 , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_MACON1 , ENC28J60_MACON1_TXPAUS | ENC28J60_MACON1_RXPAUS | ENC28J60_MACON1_MARXEN <S2SV_ModEnd> ) ; # <S2SV_ModStart> ( interface , ENC28J60_MACON3 , ENC28J60_MACON3_PADCFG_AUTO | ENC28J60_MACON3_TXCRCEN | ENC28J60_MACON3_FRMLNEN | ENC28J60_MACON3_FULDPX <S2SV_ModEnd> ) ; # <S2SV_ModStart> ( interface , ENC28J60_MACON3 , ENC28J60_MACON3_PADCFG_AUTO | ENC28J60_MACON3_TXCRCEN | ENC28J60_MACON3_FRMLNEN <S2SV_ModEnd> ) ; # <S2SV_ModStart> ( interface , ENC28J60_MACON4 , ENC28J60_MACON4_DEFER ) ; enc28j60WriteReg ( interface , ENC28J60_MAMXFLL <S2SV_ModEnd> , LSB ( <S2SV_ModStart> ( interface , ENC28J60_MAMXFLH <S2SV_ModEnd> , MSB ( <S2SV_ModStart> ( interface , ENC28J60_MABBIPG , ENC28J60_MABBIPG_DEFAULT_FD <S2SV_ModEnd> ) ; # <S2SV_ModStart> ( interface , ENC28J60_MABBIPG , ENC28J60_MABBIPG_DEFAULT_HD <S2SV_ModEnd> ) ; # <S2SV_ModStart> ( interface , ENC28J60_MAIPGL , ENC28J60_MAIPGL_DEFAULT ) ; enc28j60WriteReg ( interface , ENC28J60_MAIPGH , ENC28J60_MAIPGH_DEFAULT ) ; enc28j60WriteReg ( interface , ENC28J60_MACLCON2 , ENC28J60_MACLCON2_COLWIN_DEFAULT <S2SV_ModEnd> ) ; # <S2SV_ModStart> ( interface , ENC28J60_PHCON1 , ENC28J60_PHCON1_PDPXMD <S2SV_ModEnd> ) ; # <S2SV_ModStart> ( interface , ENC28J60_PHCON1 <S2SV_ModEnd> , 0x0000 ) <S2SV_ModStart> ( interface , ENC28J60_PHCON2 , ENC28J60_PHCON2_HDLDIS <S2SV_ModEnd> ) ; enc28j60WritePhyReg <S2SV_ModStart> ( interface , ENC28J60_PHLCON , ENC28J60_PHLCON_LACFG_LINK | ENC28J60_PHLCON_LBCFG_TX_RX | ENC28J60_PHLCON_LFRQ_40_MS | ENC28J60_PHLCON_STRCH ) ; enc28j60WriteReg ( interface , ENC28J60_EIR , 0x00 ) ; enc28j60WriteReg ( interface , ENC28J60_EIE , ENC28J60_EIE_INTIE | ENC28J60_EIE_PKTIE | ENC28J60_EIE_LINKIE | ENC28J60_EIE_TXIE | ENC28J60_EIE_TXERIE <S2SV_ModEnd> ) ; enc28j60WritePhyReg <S2SV_ModStart> ( interface , ENC28J60_PHIE , ENC28J60_PHIE_PLNKIE | ENC28J60_PHIE_PGEIE <S2SV_ModEnd> ) ; enc28j60SetBit <S2SV_ModStart> ( interface , ENC28J60_ECON1 , ENC28J60_ECON1_RXEN <S2SV_ModEnd> ) ; enc28j60DumpReg\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14462\n\n```\nCWE-125 void icmp_print ( netdissect_options * ndo , const u_char * bp , u_int plen , const u_char * bp2 , int fragmented ) { char * cp ; const struct icmp * dp ; const struct icmp_ext_t * ext_dp ; const struct ip * ip ; const char * str , * fmt ; const struct ip * oip ; const struct udphdr * ouh ; const uint8_t * obj_tptr ; uint32_t raw_label ; const u_char * snapend_save ; const struct icmp_mpls_ext_object_header_t * icmp_mpls_ext_object_header ; u_int hlen , dport , mtu , obj_tlen , obj_class_num , obj_ctype ; char buf [ MAXHOSTNAMELEN + 100 ] ; struct cksum_vec vec [ 1 ] ; dp = ( const struct icmp * ) bp ; ext_dp = ( const struct icmp_ext_t * ) bp ; ip = ( const struct ip * ) bp2 ; str = buf ; ND_TCHECK ( dp -> icmp_code ) ; switch ( dp -> icmp_type ) { case ICMP_ECHO : case ICMP_ECHOREPLY : ND_TCHECK ( dp -> icmp_seq ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"echo<S2SV_blank>%s,<S2SV_blank>id<S2SV_blank>%u,<S2SV_blank>seq<S2SV_blank>%u\" , dp -> icmp_type == ICMP_ECHO ? \"request\" : \"reply\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) ) ; break ; case ICMP_UNREACH : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; switch ( dp -> icmp_code ) { case ICMP_UNREACH_PROTOCOL : ND_TCHECK ( dp -> icmp_ip . ip_p ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>protocol<S2SV_blank>%d<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , dp -> icmp_ip . ip_p ) ; break ; case ICMP_UNREACH_PORT : ND_TCHECK ( dp -> icmp_ip . ip_p ) ; oip = & dp -> icmp_ip ; hlen = IP_HL ( oip ) * 4 ; ouh = ( const struct udphdr * ) ( ( ( const u_char * ) oip ) + hlen ) ; ND_TCHECK ( ouh -> uh_dport ) ; dport = EXTRACT_16BITS ( & ouh -> uh_dport ) ; switch ( oip -> ip_p ) { case IPPROTO_TCP : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>tcp<S2SV_blank>port<S2SV_blank>%s<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ; break ; case IPPROTO_UDP : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>udp<S2SV_blank>port<S2SV_blank>%s<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , udpport_string ( ndo , dport ) ) ; break ; default : ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>protocol<S2SV_blank>%u<S2SV_blank>port<S2SV_blank>%u<S2SV_blank>unreachable\" , ipaddr_string ( ndo , & oip -> ip_dst ) , oip -> ip_p , dport ) ; break ; } break ; case ICMP_UNREACH_NEEDFRAG : { register const struct mtu_discovery * mp ; mp = ( const struct mtu_discovery * ) ( const u_char * ) & dp -> icmp_void ; mtu = EXTRACT_16BITS ( & mp -> nexthopmtu ) ; if ( mtu ) { ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>unreachable<S2SV_blank>-<S2SV_blank>need<S2SV_blank>to<S2SV_blank>frag<S2SV_blank>(mtu<S2SV_blank>%d)\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , mtu ) ; } else { ( void ) snprintf ( buf , sizeof ( buf ) , \"%s<S2SV_blank>unreachable<S2SV_blank>-<S2SV_blank>need<S2SV_blank>to<S2SV_blank>frag\" , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) ) ; } } break ; default : fmt = tok2str ( unreach2str , \"#%d<S2SV_blank>%%s<S2SV_blank>unreachable\" , dp -> icmp_code ) ; ( void ) snprintf ( buf , sizeof ( buf ) , fmt , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) ) ; break ; } break ; case ICMP_REDIRECT : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; fmt = tok2str ( type2str , \"redirect-#%d<S2SV_blank>%%s<S2SV_blank>to<S2SV_blank>net<S2SV_blank>%%s\" , dp -> icmp_code ) ; ( void ) snprintf ( buf , sizeof ( buf ) , fmt , ipaddr_string ( ndo , & dp -> icmp_ip . ip_dst ) , ipaddr_string ( ndo , & dp -> icmp_gwaddr ) ) ; break ; case ICMP_ROUTERADVERT : { register const struct ih_rdiscovery * ihp ; register const struct id_rdiscovery * idp ; u_int lifetime , num , size ; ( void ) snprintf ( buf , sizeof ( buf ) , \"router<S2SV_blank>advertisement\" ) ; cp = buf + strlen ( buf ) ; ihp = ( const struct ih_rdiscovery * ) & dp -> icmp_void ; ND_TCHECK ( * ihp ) ; ( void ) strncpy ( cp , \"<S2SV_blank>lifetime<S2SV_blank>\" , sizeof ( buf ) - ( cp - buf ) ) ; cp = buf + strlen ( buf ) ; lifetime = EXTRACT_16BITS ( & ihp -> ird_lifetime ) ; if ( lifetime < 60 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u\" , lifetime ) ; } else if ( lifetime < 60 * 60 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u:%02u\" , lifetime / 60 , lifetime % 60 ) ; } else { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"%u:%02u:%02u\" , lifetime / 3600 , ( lifetime % 3600 ) / 60 , lifetime % 60 ) ; } cp = buf + strlen ( buf ) ; num = ihp -> ird_addrnum ; ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>%d:\" , num ) ; cp = buf + strlen ( buf ) ; size = ihp -> ird_addrsiz ; if ( size != 2 ) { ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>[size<S2SV_blank>%d]\" , size ) ; break ; } idp = ( const struct id_rdiscovery * ) & dp -> icmp_data ; while ( num -- > 0 ) { ND_TCHECK ( * idp ) ; ( void ) snprintf ( cp , sizeof ( buf ) - ( cp - buf ) , \"<S2SV_blank>{%s<S2SV_blank>%u}\" , ipaddr_string ( ndo , & idp -> ird_addr ) , EXTRACT_32BITS ( & idp -> ird_pref ) ) ; cp = buf + strlen ( buf ) ; ++ idp ; } } break ; case ICMP_TIMXCEED : ND_TCHECK ( dp -> icmp_ip . ip_dst ) ; switch ( dp -> icmp_code ) { case ICMP_TIMXCEED_INTRANS : str = \"time<S2SV_blank>exceeded<S2SV_blank>in-transit\" ; break ; case ICMP_TIMXCEED_REASS : str = \"ip<S2SV_blank>reassembly<S2SV_blank>time<S2SV_blank>exceeded\" ; break ; default : ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>exceeded-#%u\" , dp -> icmp_code ) ; break ; } break ; case ICMP_PARAMPROB : if ( dp -> icmp_code ) ( void ) snprintf ( buf , sizeof ( buf ) , \"parameter<S2SV_blank>problem<S2SV_blank>-<S2SV_blank>code<S2SV_blank>%u\" , dp -> icmp_code ) ; else { ND_TCHECK ( dp -> icmp_pptr ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"parameter<S2SV_blank>problem<S2SV_blank>-<S2SV_blank>octet<S2SV_blank>%u\" , dp -> icmp_pptr ) ; } break ; case ICMP_MASKREPLY : ND_TCHECK ( dp -> icmp_mask ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"address<S2SV_blank>mask<S2SV_blank>is<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & dp -> icmp_mask ) ) ; break ; case ICMP_TSTAMP : ND_TCHECK ( dp -> icmp_seq ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>stamp<S2SV_blank>query<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) ) ; break ; case ICMP_TSTAMPREPLY : ND_TCHECK ( dp -> icmp_ttime ) ; ( void ) snprintf ( buf , sizeof ( buf ) , \"time<S2SV_blank>stamp<S2SV_blank>reply<S2SV_blank>id<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u:<S2SV_blank>org<S2SV_blank>%s\" , EXTRACT_16BITS ( & dp -> icmp_id ) , EXTRACT_16BITS ( & dp -> icmp_seq ) , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_otime ) ) ) ; ( void ) snprintf ( buf + strlen ( buf ) , sizeof ( buf ) - strlen ( buf ) , \",<S2SV_blank>recv<S2SV_blank>%s\" , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_rtime ) ) ) ; ( void ) snprintf ( buf + strlen ( buf ) , sizeof ( buf ) - strlen ( buf ) , \",<S2SV_blank>xmit<S2SV_blank>%s\" , icmp_tstamp_print ( EXTRACT_32BITS ( & dp -> icmp_ttime ) ) ) ; break ; default : str = tok2str ( icmp2str , \"type-#%d\" , dp -> icmp_type ) ; break ; } ND_PRINT ( ( ndo , \"ICMP<S2SV_blank>%s,<S2SV_blank>length<S2SV_blank>%u\" , str , plen ) ) ; if ( ndo -> ndo_vflag && ! fragmented ) { if ( ND_TTEST2 ( * bp , plen ) ) { uint16_t sum ; vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) dp ; vec [ 0 ] . len = plen ; sum = in_cksum ( vec , 1 ) ; <S2SV_StartBug> if ( sum != 0 ) { <S2SV_EndBug> uint16_t icmp_sum = EXTRACT_16BITS ( & dp -> icmp_cksum ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(wrong<S2SV_blank>icmp<S2SV_blank>cksum<S2SV_blank>%x<S2SV_blank>(->%x)!)\" , icmp_sum , in_cksum_shouldbe ( icmp_sum , sum ) ) ) ; } } } if ( ndo -> ndo_vflag >= 1 && ICMP_ERRTYPE ( dp -> icmp_type ) ) { bp += 8 ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\" ) ) ; ip = ( const struct ip * ) bp ; ndo -> ndo_snaplen = ndo -> ndo_snapend - bp ; snapend_save = ndo -> ndo_snapend ; ND_TCHECK_16BITS ( & ip -> ip_len ) ; ip_print ( ndo , bp , EXTRACT_16BITS ( & ip -> ip_len ) ) ; ndo -> ndo_snapend = snapend_save ; } if ( ndo -> ndo_vflag >= 1 && plen > ICMP_EXTD_MINLEN && ICMP_MPLS_EXT_TYPE ( dp -> icmp_type ) ) { ND_TCHECK ( * ext_dp ) ; if ( ! ext_dp -> icmp_length && ND_TTEST2 ( ext_dp -> icmp_ext_version_res , plen - ICMP_EXTD_MINLEN ) ) { vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) & ext_dp -> icmp_ext_version_res ; vec [ 0 ] . len = plen - ICMP_EXTD_MINLEN ; if ( in_cksum ( vec , 1 ) ) { return ; } } ND_PRINT ( ( ndo , \"\\\\n\\\\tMPLS<S2SV_blank>extension<S2SV_blank>v%u\" , ICMP_MPLS_EXT_EXTRACT_VERSION ( * ( ext_dp -> icmp_ext_version_res ) ) ) ) ; if ( ICMP_MPLS_EXT_EXTRACT_VERSION ( * ( ext_dp -> icmp_ext_version_res ) ) != ICMP_MPLS_EXT_VERSION ) { ND_PRINT ( ( ndo , \"<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" ) ) ; return ; } hlen = plen - ICMP_EXTD_MINLEN ; if ( ND_TTEST2 ( ext_dp -> icmp_ext_version_res , hlen ) ) { vec [ 0 ] . ptr = ( const uint8_t * ) ( const void * ) & ext_dp -> icmp_ext_version_res ; vec [ 0 ] . len = hlen ; ND_PRINT ( ( ndo , \",<S2SV_blank>checksum<S2SV_blank>0x%04x<S2SV_blank>(%scorrect),<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( ext_dp -> icmp_ext_checksum ) , in_cksum ( vec , 1 ) ? \"in\" : \"\" , hlen ) ) ; } hlen -= 4 ; obj_tptr = ( const uint8_t * ) ext_dp -> icmp_ext_data ; while ( hlen > sizeof ( struct icmp_mpls_ext_object_header_t ) ) { icmp_mpls_ext_object_header = ( const struct icmp_mpls_ext_object_header_t * ) obj_tptr ; ND_TCHECK ( * icmp_mpls_ext_object_header ) ; obj_tlen = EXTRACT_16BITS ( icmp_mpls_ext_object_header -> length ) ; obj_class_num = icmp_mpls_ext_object_header -> class_num ; obj_ctype = icmp_mpls_ext_object_header -> ctype ; obj_tptr += sizeof ( struct icmp_mpls_ext_object_header_t ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Object<S2SV_blank>(%u),<S2SV_blank>Class-Type:<S2SV_blank>%u,<S2SV_blank>length<S2SV_blank>%u\" , tok2str ( icmp_mpls_ext_obj_values , \"unknown\" , obj_class_num ) , obj_class_num , obj_ctype , obj_tlen ) ) ; hlen -= sizeof ( struct icmp_mpls_ext_object_header_t ) ; if ( ( obj_class_num == 0 ) || ( obj_tlen < sizeof ( struct icmp_mpls_ext_object_header_t ) ) ) { return ; } obj_tlen -= sizeof ( struct icmp_mpls_ext_object_header_t ) ; switch ( obj_class_num ) { case 1 : switch ( obj_ctype ) { case 1 : ND_TCHECK2 ( * obj_tptr , 4 ) ; raw_label = EXTRACT_32BITS ( obj_tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>label<S2SV_blank>%u,<S2SV_blank>exp<S2SV_blank>%u\" , MPLS_LABEL ( raw_label ) , MPLS_EXP ( raw_label ) ) ) ; if ( MPLS_STACK ( raw_label ) ) ND_PRINT ( ( ndo , \",<S2SV_blank>[S]\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>ttl<S2SV_blank>%u\" , MPLS_TTL ( raw_label ) ) ) ; break ; default : print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; } break ; case 2 : default : print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( hlen < obj_tlen ) break ; hlen -= obj_tlen ; obj_tptr += obj_tlen ; } } return ; trunc : ND_PRINT ( ( ndo , \"[|icmp]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { ND_TCHECK_16BITS ( & dp -> icmp_cksum ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-129(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9162\n\n```\nCWE-129 int snmp_version ( void * context , size_t hdrlen , unsigned char tag , const void * data , size_t datalen ) { <S2SV_StartBug> if ( * ( unsigned char * ) data > 1 ) <S2SV_EndBug> return - ENOTSUPP ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( datalen != 1 ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4592\n\n```\nCWE-399 int __kvm_set_memory_region ( struct kvm * kvm , struct kvm_userspace_memory_region * mem , int user_alloc ) { int r ; gfn_t base_gfn ; unsigned long npages ; struct kvm_memory_slot * memslot , * slot ; struct kvm_memory_slot old , new ; struct kvm_memslots * slots , * old_memslots ; r = check_memory_region_flags ( mem ) ; if ( r ) goto out ; r = - EINVAL ; if ( mem -> memory_size & ( PAGE_SIZE - 1 ) ) goto out ; if ( mem -> guest_phys_addr & ( PAGE_SIZE - 1 ) ) goto out ; if ( user_alloc && ( ( mem -> userspace_addr & ( PAGE_SIZE - 1 ) ) || ! access_ok ( VERIFY_WRITE , ( void __user * ) ( unsigned long ) mem -> userspace_addr , mem -> memory_size ) ) ) goto out ; if ( mem -> slot >= KVM_MEM_SLOTS_NUM ) goto out ; if ( mem -> guest_phys_addr + mem -> memory_size < mem -> guest_phys_addr ) goto out ; memslot = id_to_memslot ( kvm -> memslots , mem -> slot ) ; base_gfn = mem -> guest_phys_addr >> PAGE_SHIFT ; npages = mem -> memory_size >> PAGE_SHIFT ; r = - EINVAL ; if ( npages > KVM_MEM_MAX_NR_PAGES ) goto out ; if ( ! npages ) mem -> flags &= ~ KVM_MEM_LOG_DIRTY_PAGES ; new = old = * memslot ; new . id = mem -> slot ; new . base_gfn = base_gfn ; new . npages = npages ; new . flags = mem -> flags ; r = - EINVAL ; if ( npages && old . npages && npages != old . npages ) goto out_free ; if ( ! npages && ! old . npages ) goto out_free ; r = - EEXIST ; kvm_for_each_memslot ( slot , kvm -> memslots ) { if ( slot -> id >= KVM_MEMORY_SLOTS || slot == memslot ) continue ; if ( ! ( ( base_gfn + npages <= slot -> base_gfn ) || ( base_gfn >= slot -> base_gfn + slot -> npages ) ) ) goto out_free ; } if ( ! ( new . flags & KVM_MEM_LOG_DIRTY_PAGES ) ) new . dirty_bitmap = NULL ; r = - ENOMEM ; if ( ! old . npages ) { new . user_alloc = user_alloc ; new . userspace_addr = mem -> userspace_addr ; if ( kvm_arch_create_memslot ( & new , npages ) ) goto out_free ; } else if ( npages && mem -> userspace_addr != old . userspace_addr ) { r = - EINVAL ; goto out_free ; } if ( ( new . flags & KVM_MEM_LOG_DIRTY_PAGES ) && ! new . dirty_bitmap ) { if ( kvm_create_dirty_bitmap ( & new ) < 0 ) goto out_free ; } if ( ! npages || base_gfn != old . base_gfn ) { struct kvm_memory_slot * slot ; r = - ENOMEM ; slots = kmemdup ( kvm -> memslots , sizeof ( struct kvm_memslots ) , GFP_KERNEL ) ; if ( ! slots ) goto out_free ; slot = id_to_memslot ( slots , mem -> slot ) ; slot -> flags |= KVM_MEMSLOT_INVALID ; update_memslots ( slots , NULL ) ; old_memslots = kvm -> memslots ; rcu_assign_pointer ( kvm -> memslots , slots ) ; synchronize_srcu_expedited ( & kvm -> srcu ) ; <S2SV_StartBug> kvm_arch_flush_shadow_memslot ( kvm , slot ) ; <S2SV_EndBug> kfree ( old_memslots ) ; } r = kvm_arch_prepare_memory_region ( kvm , & new , old , mem , user_alloc ) ; if ( r ) <S2SV_StartBug> goto out_free ; <S2SV_EndBug> if ( npages ) { r = kvm_iommu_map_pages ( kvm , & new ) ; if ( r ) goto out_free ; } else kvm_iommu_unmap_pages ( kvm , & old ) ; r = - ENOMEM ; slots = kmemdup ( kvm -> memslots , sizeof ( struct kvm_memslots ) , GFP_KERNEL ) ; if ( ! slots ) goto out_free ; <S2SV_StartBug> if ( ! npages ) { <S2SV_EndBug> new . dirty_bitmap = NULL ; memset ( & new . arch , 0 , sizeof ( new . arch ) ) ; } update_memslots ( slots , & new ) ; old_memslots = kvm -> memslots ; rcu_assign_pointer ( kvm -> memslots , slots ) ; synchronize_srcu_expedited ( & kvm -> srcu ) ; kvm_arch_commit_memory_region ( kvm , mem , old , user_alloc ) ; kvm_free_physmem_slot ( & old , & new ) ; kfree ( old_memslots ) ; return 0 ; <S2SV_StartBug> out_free : <S2SV_EndBug> kvm_free_physmem_slot ( & new , & old ) ; out : return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> srcu ) ; kvm_iommu_unmap_pages ( kvm , & old ) ; <S2SV_ModStart> ) goto out_free <S2SV_ModEnd> ; r = <S2SV_ModStart> ; if ( npages ) { r = kvm_iommu_map_pages ( kvm , & new ) ; if ( r ) goto out_slots ; } if ( <S2SV_ModStart> return 0 ; out_slots : kfree ( slots ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4667\n\n```\nCWE-20 void sctp_association_free ( struct sctp_association * asoc ) { struct sock * sk = asoc -> base . sk ; struct sctp_transport * transport ; struct list_head * pos , * temp ; int i ; <S2SV_StartBug> if ( ! asoc -> temp ) { <S2SV_EndBug> list_del ( & asoc -> asocs ) ; if ( sctp_style ( sk , TCP ) && sctp_sstate ( sk , LISTENING ) ) sk -> sk_ack_backlog -- ; } asoc -> base . dead = true ; sctp_outq_free ( & asoc -> outqueue ) ; sctp_ulpq_free ( & asoc -> ulpq ) ; sctp_inq_free ( & asoc -> base . inqueue ) ; sctp_tsnmap_free ( & asoc -> peer . tsn_map ) ; sctp_ssnmap_free ( asoc -> ssnmap ) ; sctp_bind_addr_free ( & asoc -> base . bind_addr ) ; for ( i = SCTP_EVENT_TIMEOUT_NONE ; i < SCTP_NUM_TIMEOUT_TYPES ; ++ i ) { if ( del_timer ( & asoc -> timers [ i ] ) ) sctp_association_put ( asoc ) ; } kfree ( asoc -> peer . cookie ) ; kfree ( asoc -> peer . peer_random ) ; kfree ( asoc -> peer . peer_chunks ) ; kfree ( asoc -> peer . peer_hmacs ) ; list_for_each_safe ( pos , temp , & asoc -> peer . transport_addr_list ) { transport = list_entry ( pos , struct sctp_transport , transports ) ; list_del_rcu ( pos ) ; sctp_transport_free ( transport ) ; } asoc -> peer . transport_count = 0 ; sctp_asconf_queue_teardown ( asoc ) ; if ( asoc -> asconf_addr_del_pending != NULL ) kfree ( asoc -> asconf_addr_del_pending ) ; sctp_auth_destroy_keys ( & asoc -> endpoint_shared_keys ) ; sctp_auth_key_put ( asoc -> asoc_shared_key ) ; sctp_association_put ( asoc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! list_empty ( & asoc -> asocs ) <S2SV_ModEnd> ) { list_del\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int load_state_from_tss32 ( struct x86_emulate_ctxt * ctxt , struct tss_segment_32 * tss ) { int ret ; u8 cpl ; if ( ctxt -> ops -> set_cr ( ctxt , 3 , tss -> cr3 ) ) return emulate_gp ( ctxt , 0 ) ; ctxt -> _eip = tss -> eip ; ctxt -> eflags = tss -> eflags | 2 ; * reg_write ( ctxt , VCPU_REGS_RAX ) = tss -> eax ; * reg_write ( ctxt , VCPU_REGS_RCX ) = tss -> ecx ; * reg_write ( ctxt , VCPU_REGS_RDX ) = tss -> edx ; * reg_write ( ctxt , VCPU_REGS_RBX ) = tss -> ebx ; * reg_write ( ctxt , VCPU_REGS_RSP ) = tss -> esp ; * reg_write ( ctxt , VCPU_REGS_RBP ) = tss -> ebp ; * reg_write ( ctxt , VCPU_REGS_RSI ) = tss -> esi ; * reg_write ( ctxt , VCPU_REGS_RDI ) = tss -> edi ; set_segment_selector ( ctxt , tss -> ldt_selector , VCPU_SREG_LDTR ) ; set_segment_selector ( ctxt , tss -> es , VCPU_SREG_ES ) ; set_segment_selector ( ctxt , tss -> cs , VCPU_SREG_CS ) ; set_segment_selector ( ctxt , tss -> ss , VCPU_SREG_SS ) ; set_segment_selector ( ctxt , tss -> ds , VCPU_SREG_DS ) ; set_segment_selector ( ctxt , tss -> fs , VCPU_SREG_FS ) ; set_segment_selector ( ctxt , tss -> gs , VCPU_SREG_GS ) ; if ( ctxt -> eflags & X86_EFLAGS_VM ) { ctxt -> mode = X86EMUL_MODE_VM86 ; cpl = 3 ; } else { ctxt -> mode = X86EMUL_MODE_PROT32 ; cpl = tss -> cs & 3 ; } <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ldt_selector , VCPU_SREG_LDTR , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> es , VCPU_SREG_ES , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> cs , VCPU_SREG_CS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ss , VCPU_SREG_SS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> ds , VCPU_SREG_DS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> fs , VCPU_SREG_FS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; <S2SV_StartBug> ret = __load_segment_descriptor ( ctxt , tss -> gs , VCPU_SREG_GS , cpl , true ) ; <S2SV_EndBug> if ( ret != X86EMUL_CONTINUE ) return ret ; return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , VCPU_SREG_LDTR , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if <S2SV_ModStart> , cpl , true , NULL <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13044\n\n```\nCWE-125 static int dhcpv4_print ( netdissect_options * ndo , const u_char * cp , u_int length , int indent ) { u_int i , t ; const u_char * tlv , * value ; uint8_t type , optlen ; i = 0 ; while ( i < length ) { <S2SV_StartBug> tlv = cp + i ; <S2SV_EndBug> type = ( uint8_t ) tlv [ 0 ] ; optlen = ( uint8_t ) tlv [ 1 ] ; value = tlv + 2 ; ND_PRINT ( ( ndo , \"\\\\n\" ) ) ; for ( t = indent ; t > 0 ; t -- ) ND_PRINT ( ( ndo , \"\\\\t\" ) ) ; ND_PRINT ( ( ndo , \"%s\" , tok2str ( dh4opt_str , \"Unknown\" , type ) ) ) ; <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>(%u)\" , optlen + 2 ) ) ; <S2SV_EndBug> switch ( type ) { case DH4OPT_DNS_SERVERS : case DH4OPT_NTP_SERVERS : { if ( optlen < 4 || optlen % 4 != 0 ) { return - 1 ; } for ( t = 0 ; t < optlen ; t += 4 ) ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ipaddr_string ( ndo , value + t ) ) ) ; } break ; case DH4OPT_DOMAIN_SEARCH : { const u_char * tp = value ; while ( tp < value + optlen ) { ND_PRINT ( ( ndo , \"<S2SV_blank>\" ) ) ; if ( ( tp = ns_nprint ( ndo , tp , value + optlen ) ) == NULL ) return - 1 ; } } break ; } i += 2 + optlen ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length ) { if ( i + 2 > length ) return - 1 ; <S2SV_ModStart> 2 ) ) ; if ( i + 2 + optlen > length ) return - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13304\n\n```\nCWE-617 int ff_mpeg4_decode_picture_header ( Mpeg4DecContext * ctx , GetBitContext * gb ) { MpegEncContext * s = & ctx -> m ; unsigned startcode , v ; int ret ; int vol = 0 ; align_get_bits ( gb ) ; if ( ! s -> studio_profile && s -> avctx -> bits_per_raw_sample != 8 ) s -> avctx -> bits_per_raw_sample = 0 ; if ( s -> codec_tag == AV_RL32 ( \"WV1F\" ) && show_bits ( gb , 24 ) == 0x575630 ) { skip_bits ( gb , 24 ) ; if ( get_bits ( gb , 8 ) == 0xF0 ) goto end ; } startcode = 0xff ; for ( ; ; ) { if ( get_bits_count ( gb ) >= gb -> size_in_bits ) { if ( gb -> size_in_bits == 8 && ( ctx -> divx_version >= 0 || ctx -> xvid_build >= 0 ) || s -> codec_tag == AV_RL32 ( \"QMP4\" ) ) { av_log ( s -> avctx , AV_LOG_VERBOSE , \"frame<S2SV_blank>skip<S2SV_blank>%d\\\\n\" , gb -> size_in_bits ) ; return FRAME_SKIPPED ; } else return AVERROR_INVALIDDATA ; } v = get_bits ( gb , 8 ) ; startcode = ( ( startcode << 8 ) | v ) & 0xffffffff ; if ( ( startcode & 0xFFFFFF00 ) != 0x100 ) continue ; if ( s -> avctx -> debug & FF_DEBUG_STARTCODE ) { av_log ( s -> avctx , AV_LOG_DEBUG , \"startcode:<S2SV_blank>%3X<S2SV_blank>\" , startcode ) ; if ( startcode <= 0x11F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode <= 0x12F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Layer<S2SV_blank>Start\" ) ; else if ( startcode <= 0x13F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode <= 0x15F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FGS<S2SV_blank>bp<S2SV_blank>start\" ) ; else if ( startcode <= 0x1AF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode == 0x1B0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>End\" ) ; else if ( startcode == 0x1B2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"User<S2SV_blank>Data\" ) ; else if ( startcode == 0x1B3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Group<S2SV_blank>of<S2SV_blank>VOP<S2SV_blank>start\" ) ; else if ( startcode == 0x1B4 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Session<S2SV_blank>Error\" ) ; else if ( startcode == 0x1B5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B6 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1B7 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"slice<S2SV_blank>start\" ) ; else if ( startcode == 0x1B8 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"extension<S2SV_blank>start\" ) ; else if ( startcode == 0x1B9 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"fgs<S2SV_blank>start\" ) ; else if ( startcode == 0x1BA ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BB ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BC ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BD ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BE ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Still<S2SV_blank>Texture<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Spatial<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>SNR<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Tile<S2SV_blank>start\" ) ; else if ( startcode == 0x1C2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Shape<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"stuffing<S2SV_blank>start\" ) ; else if ( startcode <= 0x1C5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"reserved\" ) ; else if ( startcode <= 0x1FF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"System<S2SV_blank>start\" ) ; av_log ( s -> avctx , AV_LOG_DEBUG , \"<S2SV_blank>at<S2SV_blank>%d\\\\n\" , get_bits_count ( gb ) ) ; } if ( startcode >= 0x120 && startcode <= 0x12F ) { if ( vol ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Ignoring<S2SV_blank>multiple<S2SV_blank>VOL<S2SV_blank>headers\\\\n\" ) ; continue ; } vol ++ ; if ( ( ret = decode_vol_header ( ctx , gb ) ) < 0 ) return ret ; } else if ( startcode == USER_DATA_STARTCODE ) { decode_user_data ( ctx , gb ) ; } else if ( startcode == GOP_STARTCODE ) { mpeg4_decode_gop_header ( s , gb ) ; } else if ( startcode == VOS_STARTCODE ) { int profile , level ; mpeg4_decode_profile_level ( s , gb , & profile , & level ) ; if ( profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO && ( level > 0 && level < 9 ) ) { s -> studio_profile = 1 ; next_start_code_studio ( gb ) ; extension_and_user_data ( s , gb , 0 ) ; } else if ( s -> studio_profile ) { avpriv_request_sample ( s -> avctx , \"Mixes<S2SV_blank>studio<S2SV_blank>and<S2SV_blank>non<S2SV_blank>studio<S2SV_blank>profile\\\\n\" ) ; return AVERROR_PATCHWELCOME ; } s -> avctx -> profile = profile ; s -> avctx -> level = level ; } else if ( startcode == VISUAL_OBJ_STARTCODE ) { if ( s -> studio_profile ) { if ( ( ret = decode_studiovisualobject ( ctx , gb ) ) < 0 ) return ret ; } else mpeg4_decode_visual_object ( s , gb ) ; } else if ( startcode == VOP_STARTCODE ) { break ; } align_get_bits ( gb ) ; startcode = 0xff ; } end : if ( s -> avctx -> flags & AV_CODEC_FLAG_LOW_DELAY ) s -> low_delay = 1 ; s -> avctx -> has_b_frames = ! s -> low_delay ; if ( s -> studio_profile ) { <S2SV_StartBug> av_assert0 ( s -> avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) ; <S2SV_EndBug> if ( ! s -> avctx -> bits_per_raw_sample ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Missing<S2SV_blank>VOL<S2SV_blank>header\\\\n\" ) ; return AVERROR_INVALIDDATA ; } return decode_studio_vop_header ( ctx , gb ) ; } else return decode_vop_header ( ctx , gb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> studio_profile ) { <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext4_xattr_block_list ( struct dentry * dentry , char * buffer , size_t buffer_size ) { struct inode * inode = d_inode ( dentry ) ; struct buffer_head * bh = NULL ; int error ; <S2SV_StartBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; <S2SV_EndBug> ea_idebug ( inode , \"buffer=%p,<S2SV_blank>buffer_size=%ld\" , buffer , ( long ) buffer_size ) ; error = 0 ; if ( ! EXT4_I ( inode ) -> i_file_acl ) goto cleanup ; ea_idebug ( inode , \"reading<S2SV_blank>block<S2SV_blank>%llu\" , ( unsigned long long ) EXT4_I ( inode ) -> i_file_acl ) ; bh = sb_bread ( inode -> i_sb , EXT4_I ( inode ) -> i_file_acl ) ; error = - EIO ; if ( ! bh ) goto cleanup ; ea_bdebug ( bh , \"b_count=%d,<S2SV_blank>refcount=%d\" , atomic_read ( & ( bh -> b_count ) ) , le32_to_cpu ( BHDR ( bh ) -> h_refcount ) ) ; if ( ext4_xattr_check_block ( inode , bh ) ) { EXT4_ERROR_INODE ( inode , \"bad<S2SV_blank>block<S2SV_blank>%llu\" , EXT4_I ( inode ) -> i_file_acl ) ; error = - EFSCORRUPTED ; goto cleanup ; } ext4_xattr_cache_insert ( ext4_mb_cache , bh ) ; error = ext4_xattr_list_entries ( dentry , BFIRST ( bh ) , buffer , buffer_size ) ; cleanup : brelse ( bh ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error ; struct mb2_cache <S2SV_ModEnd> * ext4_mb_cache =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7017\n\n```\nCWE-000 int ff_jpeg2000_init_component ( Jpeg2000Component * comp , Jpeg2000CodingStyle * codsty , Jpeg2000QuantStyle * qntsty , int cbps , int dx , int dy , AVCodecContext * avctx ) { uint8_t log2_band_prec_width , log2_band_prec_height ; int reslevelno , bandno , gbandno = 0 , ret , i , j ; uint32_t csize ; if ( codsty -> nreslevels2decode <= 0 ) { av_log ( avctx , AV_LOG_ERROR , \"nreslevels2decode<S2SV_blank>%d<S2SV_blank>invalid<S2SV_blank>or<S2SV_blank>uninitialized\\\\n\" , codsty -> nreslevels2decode ) ; return AVERROR_INVALIDDATA ; } if ( ret = ff_jpeg2000_dwt_init ( & comp -> dwt , comp -> coord , codsty -> nreslevels2decode - 1 , codsty -> transform ) ) return ret ; csize = ( comp -> coord [ 0 ] [ 1 ] - comp -> coord [ 0 ] [ 0 ] ) * ( comp -> coord [ 1 ] [ 1 ] - comp -> coord [ 1 ] [ 0 ] ) ; if ( codsty -> transform == FF_DWT97 ) { comp -> i_data = NULL ; comp -> f_data = av_malloc_array ( csize , sizeof ( * comp -> f_data ) ) ; if ( ! comp -> f_data ) return AVERROR ( ENOMEM ) ; } else { comp -> f_data = NULL ; comp -> i_data = av_malloc_array ( csize , sizeof ( * comp -> i_data ) ) ; if ( ! comp -> i_data ) return AVERROR ( ENOMEM ) ; } comp -> reslevel = av_malloc_array ( codsty -> nreslevels , sizeof ( * comp -> reslevel ) ) ; if ( ! comp -> reslevel ) return AVERROR ( ENOMEM ) ; for ( reslevelno = 0 ; reslevelno < codsty -> nreslevels ; reslevelno ++ ) { int declvl = codsty -> nreslevels - reslevelno ; Jpeg2000ResLevel * reslevel = comp -> reslevel + reslevelno ; for ( i = 0 ; i < 2 ; i ++ ) for ( j = 0 ; j < 2 ; j ++ ) reslevel -> coord [ i ] [ j ] = ff_jpeg2000_ceildivpow2 ( comp -> coord_o [ i ] [ j ] , declvl - 1 ) ; reslevel -> log2_prec_width = codsty -> log2_prec_widths [ reslevelno ] ; reslevel -> log2_prec_height = codsty -> log2_prec_heights [ reslevelno ] ; if ( reslevelno == 0 ) reslevel -> nbands = 1 ; else reslevel -> nbands = 3 ; if ( reslevel -> coord [ 0 ] [ 1 ] == reslevel -> coord [ 0 ] [ 0 ] ) reslevel -> num_precincts_x = 0 ; else reslevel -> num_precincts_x = ff_jpeg2000_ceildivpow2 ( reslevel -> coord [ 0 ] [ 1 ] , reslevel -> log2_prec_width ) - ( reslevel -> coord [ 0 ] [ 0 ] >> reslevel -> log2_prec_width ) ; if ( reslevel -> coord [ 1 ] [ 1 ] == reslevel -> coord [ 1 ] [ 0 ] ) reslevel -> num_precincts_y = 0 ; else reslevel -> num_precincts_y = ff_jpeg2000_ceildivpow2 ( reslevel -> coord [ 1 ] [ 1 ] , reslevel -> log2_prec_height ) - ( reslevel -> coord [ 1 ] [ 0 ] >> reslevel -> log2_prec_height ) ; <S2SV_StartBug> reslevel -> band = av_malloc_array ( reslevel -> nbands , sizeof ( * reslevel -> band ) ) ; <S2SV_EndBug> if ( ! reslevel -> band ) return AVERROR ( ENOMEM ) ; for ( bandno = 0 ; bandno < reslevel -> nbands ; bandno ++ , gbandno ++ ) { Jpeg2000Band * band = reslevel -> band + bandno ; int cblkno , precno ; int nb_precincts ; switch ( qntsty -> quantsty ) { uint8_t gain ; int numbps ; case JPEG2000_QSTY_NONE : band -> f_stepsize = 1 ; break ; case JPEG2000_QSTY_SI : numbps = cbps + lut_gain [ codsty -> transform == FF_DWT53 ] [ bandno + ( reslevelno > 0 ) ] ; band -> f_stepsize = SHL ( 2048 + qntsty -> mant [ gbandno ] , 2 + numbps - qntsty -> expn [ gbandno ] ) ; break ; case JPEG2000_QSTY_SE : gain = cbps ; band -> f_stepsize = pow ( 2.0 , gain - qntsty -> expn [ gbandno ] ) ; band -> f_stepsize *= qntsty -> mant [ gbandno ] / 2048.0 + 1.0 ; break ; default : band -> f_stepsize = 0 ; av_log ( avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>quantization<S2SV_blank>format\\\\n\" ) ; break ; } if ( ! av_codec_is_encoder ( avctx -> codec ) ) band -> f_stepsize *= 0.5 ; band -> i_stepsize = band -> f_stepsize * ( 1 << 15 ) ; if ( reslevelno == 0 ) { for ( i = 0 ; i < 2 ; i ++ ) for ( j = 0 ; j < 2 ; j ++ ) band -> coord [ i ] [ j ] = ff_jpeg2000_ceildivpow2 ( comp -> coord_o [ i ] [ j ] - comp -> coord_o [ i ] [ 0 ] , declvl - 1 ) ; log2_band_prec_width = reslevel -> log2_prec_width ; log2_band_prec_height = reslevel -> log2_prec_height ; band -> log2_cblk_width = FFMIN ( codsty -> log2_cblk_width , reslevel -> log2_prec_width ) ; band -> log2_cblk_height = FFMIN ( codsty -> log2_cblk_height , reslevel -> log2_prec_height ) ; } else { for ( i = 0 ; i < 2 ; i ++ ) for ( j = 0 ; j < 2 ; j ++ ) band -> coord [ i ] [ j ] = ff_jpeg2000_ceildivpow2 ( comp -> coord_o [ i ] [ j ] - comp -> coord_o [ i ] [ 0 ] - ( ( ( bandno + 1 >> i ) & 1 ) << declvl - 1 ) , declvl ) ; band -> log2_cblk_width = FFMIN ( codsty -> log2_cblk_width , reslevel -> log2_prec_width - 1 ) ; band -> log2_cblk_height = FFMIN ( codsty -> log2_cblk_height , reslevel -> log2_prec_height - 1 ) ; log2_band_prec_width = reslevel -> log2_prec_width - 1 ; log2_band_prec_height = reslevel -> log2_prec_height - 1 ; } for ( j = 0 ; j < 2 ; j ++ ) band -> coord [ 0 ] [ j ] = ff_jpeg2000_ceildiv ( band -> coord [ 0 ] [ j ] , dx ) ; for ( j = 0 ; j < 2 ; j ++ ) band -> coord [ 1 ] [ j ] = ff_jpeg2000_ceildiv ( band -> coord [ 1 ] [ j ] , dy ) ; <S2SV_StartBug> band -> prec = av_malloc_array ( reslevel -> num_precincts_x * <S2SV_EndBug> ( uint64_t ) reslevel -> num_precincts_y , sizeof ( * band -> prec ) ) ; if ( ! band -> prec ) return AVERROR ( ENOMEM ) ; nb_precincts = reslevel -> num_precincts_x * reslevel -> num_precincts_y ; for ( precno = 0 ; precno < nb_precincts ; precno ++ ) { Jpeg2000Prec * prec = band -> prec + precno ; prec -> coord [ 0 ] [ 0 ] = ( precno % reslevel -> num_precincts_x ) * ( 1 << log2_band_prec_width ) ; prec -> coord [ 0 ] [ 0 ] = FFMAX ( prec -> coord [ 0 ] [ 0 ] , band -> coord [ 0 ] [ 0 ] ) ; prec -> coord [ 1 ] [ 0 ] = ( precno / reslevel -> num_precincts_x ) * ( 1 << log2_band_prec_height ) ; prec -> coord [ 1 ] [ 0 ] = FFMAX ( prec -> coord [ 1 ] [ 0 ] , band -> coord [ 1 ] [ 0 ] ) ; prec -> coord [ 0 ] [ 1 ] = prec -> coord [ 0 ] [ 0 ] + ( 1 << log2_band_prec_width ) ; prec -> coord [ 0 ] [ 1 ] = FFMIN ( prec -> coord [ 0 ] [ 1 ] , band -> coord [ 0 ] [ 1 ] ) ; prec -> coord [ 1 ] [ 1 ] = prec -> coord [ 1 ] [ 0 ] + ( 1 << log2_band_prec_height ) ; prec -> coord [ 1 ] [ 1 ] = FFMIN ( prec -> coord [ 1 ] [ 1 ] , band -> coord [ 1 ] [ 1 ] ) ; prec -> nb_codeblocks_width = ff_jpeg2000_ceildivpow2 ( prec -> coord [ 0 ] [ 1 ] - prec -> coord [ 0 ] [ 0 ] , band -> log2_cblk_width ) ; prec -> nb_codeblocks_height = ff_jpeg2000_ceildivpow2 ( prec -> coord [ 1 ] [ 1 ] - prec -> coord [ 1 ] [ 0 ] , band -> log2_cblk_height ) ; prec -> cblkincl = ff_jpeg2000_tag_tree_init ( prec -> nb_codeblocks_width , prec -> nb_codeblocks_height ) ; if ( ! prec -> cblkincl ) return AVERROR ( ENOMEM ) ; prec -> zerobits = ff_jpeg2000_tag_tree_init ( prec -> nb_codeblocks_width , prec -> nb_codeblocks_height ) ; if ( ! prec -> zerobits ) return AVERROR ( ENOMEM ) ; prec -> cblk = av_mallocz_array ( prec -> nb_codeblocks_width * ( uint64_t ) prec -> nb_codeblocks_height , sizeof ( * prec -> cblk ) ) ; if ( ! prec -> cblk ) return AVERROR ( ENOMEM ) ; for ( cblkno = 0 ; cblkno < prec -> nb_codeblocks_width * prec -> nb_codeblocks_height ; cblkno ++ ) { Jpeg2000Cblk * cblk = prec -> cblk + cblkno ; uint16_t Cx0 , Cy0 ; Cx0 = ( prec -> coord [ 0 ] [ 0 ] >> band -> log2_cblk_width ) << band -> log2_cblk_width ; Cx0 = Cx0 + ( ( cblkno % prec -> nb_codeblocks_width ) << band -> log2_cblk_width ) ; cblk -> coord [ 0 ] [ 0 ] = FFMAX ( Cx0 , prec -> coord [ 0 ] [ 0 ] ) ; Cy0 = ( prec -> coord [ 1 ] [ 0 ] >> band -> log2_cblk_height ) << band -> log2_cblk_height ; Cy0 = Cy0 + ( ( cblkno / prec -> nb_codeblocks_width ) << band -> log2_cblk_height ) ; cblk -> coord [ 1 ] [ 0 ] = FFMAX ( Cy0 , prec -> coord [ 1 ] [ 0 ] ) ; cblk -> coord [ 0 ] [ 1 ] = FFMIN ( Cx0 + ( 1 << band -> log2_cblk_width ) , prec -> coord [ 0 ] [ 1 ] ) ; cblk -> coord [ 1 ] [ 1 ] = FFMIN ( Cy0 + ( 1 << band -> log2_cblk_height ) , prec -> coord [ 1 ] [ 1 ] ) ; if ( ( bandno + ! ! reslevelno ) & 1 ) { cblk -> coord [ 0 ] [ 0 ] += comp -> reslevel [ reslevelno - 1 ] . coord [ 0 ] [ 1 ] - comp -> reslevel [ reslevelno - 1 ] . coord [ 0 ] [ 0 ] ; cblk -> coord [ 0 ] [ 1 ] += comp -> reslevel [ reslevelno - 1 ] . coord [ 0 ] [ 1 ] - comp -> reslevel [ reslevelno - 1 ] . coord [ 0 ] [ 0 ] ; } if ( ( bandno + ! ! reslevelno ) & 2 ) { cblk -> coord [ 1 ] [ 0 ] += comp -> reslevel [ reslevelno - 1 ] . coord [ 1 ] [ 1 ] - comp -> reslevel [ reslevelno - 1 ] . coord [ 1 ] [ 0 ] ; cblk -> coord [ 1 ] [ 1 ] += comp -> reslevel [ reslevelno - 1 ] . coord [ 1 ] [ 1 ] - comp -> reslevel [ reslevelno - 1 ] . coord [ 1 ] [ 0 ] ; } cblk -> zero = 0 ; cblk -> lblock = 3 ; cblk -> length = 0 ; cblk -> lengthinc = 0 ; cblk -> npasses = 0 ; } } } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> band = av_calloc <S2SV_ModEnd> ( reslevel -> <S2SV_ModStart> -> prec = av_calloc <S2SV_ModEnd> ( reslevel ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline signed int ReadPropertySignedLong ( const EndianType endian , const unsigned char * buffer ) { union { unsigned int unsigned_value ; signed int signed_value ; } quantum ; unsigned int value ; if ( endian == LSBEndian ) { <S2SV_StartBug> value = ( unsigned int ) ( ( buffer [ 3 ] << 24 ) | ( buffer [ 2 ] << 16 ) | <S2SV_EndBug> <S2SV_StartBug> ( buffer [ 1 ] << 8 ) | ( buffer [ 0 ] ) ) ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffffffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; } <S2SV_StartBug> value = ( unsigned int ) ( ( buffer [ 0 ] << 24 ) | ( buffer [ 1 ] << 16 ) | <S2SV_EndBug> <S2SV_StartBug> ( buffer [ 2 ] << 8 ) | buffer [ 3 ] ) ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffffffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int ) <S2SV_ModEnd> buffer [ 3 <S2SV_ModStart> ] << 24 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 2 <S2SV_ModStart> ] << 16 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 8 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; quantum . <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffffffff <S2SV_ModStart> value & 0xffffffff <S2SV_ModEnd> ; return ( <S2SV_ModStart> unsigned int ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> ] << 24 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 16 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 2 <S2SV_ModStart> ] << 8 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 3 <S2SV_ModStart> [ 3 ] <S2SV_ModEnd> ; quantum . <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffffffff <S2SV_ModStart> value & 0xffffffff <S2SV_ModEnd> ; return (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> fpAcc ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint32 bps = tif -> tif_dir . td_bitspersample / 8 ; tmsize_t wc = cc / bps ; tmsize_t count = cc ; uint8 * cp = ( uint8 * ) cp0 ; uint8 * tmp = ( uint8 * ) _TIFFmalloc ( cc ) ; <S2SV_StartBug> assert ( ( cc % ( bps * stride ) ) == 0 ) ; <S2SV_EndBug> if ( ! tmp ) <S2SV_StartBug> return ; <S2SV_EndBug> while ( count > stride ) { REPEAT4 ( stride , cp [ stride ] = ( unsigned char ) ( ( cp [ stride ] + cp [ 0 ] ) & 0xff ) ; cp ++ ) count -= stride ; } _TIFFmemcpy ( tmp , cp0 , cc ) ; cp = ( uint8 * ) cp0 ; for ( count = 0 ; count < wc ; count ++ ) { uint32 byte ; for ( byte = 0 ; byte < bps ; byte ++ ) { # if WORDS_BIGENDIAN cp [ bps * count + byte ] = tmp [ byte * wc + count ] ; # else cp [ bps * count + byte ] = tmp [ ( bps - byte - 1 ) * wc + count ] ; # endif } } _TIFFfree ( tmp ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> fpAcc ( TIFF <S2SV_ModStart> cc ) ; if <S2SV_ModEnd> ( cc % <S2SV_ModStart> * stride ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"fpAcc\" , \"%s\" , \"cc%(bps*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> tmp ) return 0 <S2SV_ModStart> tmp ) ; return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int ast_type_init ( PyObject * self , PyObject * args , PyObject * kw ) { <S2SV_StartBug> _Py_IDENTIFIER ( _fields ) ; <S2SV_EndBug> Py_ssize_t i , numfields = 0 ; int res = - 1 ; PyObject * key , * value , * fields ; <S2SV_StartBug> fields = _PyObject_GetAttrId ( ( PyObject * ) Py_TYPE ( self ) , & PyId__fields ) ; <S2SV_EndBug> if ( ! fields ) PyErr_Clear ( ) ; if ( fields ) { numfields = PySequence_Size ( fields ) ; if ( numfields == - 1 ) goto cleanup ; } res = 0 ; <S2SV_StartBug> if ( PyTuple_GET_SIZE ( args ) > 0 ) { <S2SV_EndBug> if ( numfields != PyTuple_GET_SIZE ( args ) ) { <S2SV_StartBug> PyErr_Format ( PyExc_TypeError , \"%.400s<S2SV_blank>constructor<S2SV_blank>takes<S2SV_blank>%s\" <S2SV_EndBug> \"%zd<S2SV_blank>positional<S2SV_blank>argument%s\" , <S2SV_StartBug> Py_TYPE ( self ) -> tp_name , <S2SV_EndBug> numfields == 0 ? \"\" : \"either<S2SV_blank>0<S2SV_blank>or<S2SV_blank>\" , numfields , numfields == 1 ? \"\" : \"s\" ) ; res = - 1 ; goto cleanup ; } for ( i = 0 ; i < PyTuple_GET_SIZE ( args ) ; i ++ ) { PyObject * name = PySequence_GetItem ( fields , i ) ; if ( ! name ) { res = - 1 ; goto cleanup ; } res = PyObject_SetAttr ( self , name , PyTuple_GET_ITEM ( args , i ) ) ; Py_DECREF ( name ) ; if ( res < 0 ) goto cleanup ; } <S2SV_StartBug> } <S2SV_EndBug> if ( kw ) { i = 0 ; while ( PyDict_Next ( kw , & i , & key , & value ) ) { res = PyObject_SetAttr ( self , key , value ) ; if ( res < 0 ) goto cleanup ; } } cleanup : Py_XDECREF ( fields ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> kw ) { <S2SV_ModEnd> Py_ssize_t i , <S2SV_ModStart> * fields ; if ( lookup_attr_id <S2SV_ModEnd> ( ( PyObject <S2SV_ModStart> , & PyId__fields , & fields ) < 0 ) { goto cleanup ; } <S2SV_ModEnd> if ( fields <S2SV_ModStart> ; if ( numfields < <S2SV_ModStart> ( args ) <S2SV_ModEnd> ) { PyErr_Format <S2SV_ModStart> ( PyExc_TypeError , \"%.400s<S2SV_blank>constructor<S2SV_blank>takes<S2SV_blank>at<S2SV_blank>most<S2SV_blank>\" <S2SV_ModEnd> \"%zd<S2SV_blank>positional<S2SV_blank>argument%s\" , Py_TYPE <S2SV_ModStart> ) -> tp_name <S2SV_ModEnd> , numfields , <S2SV_ModStart> cleanup ; } <S2SV_ModEnd> if ( kw\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_frame ( vpx_codec_ctx_t * codec , <S2SV_EndBug> vpx_image_t * img , int frame_index , <S2SV_StartBug> VpxVideoWriter * writer ) { <S2SV_EndBug> vpx_codec_iter_t iter = NULL ; const vpx_codec_cx_pkt_t * pkt = NULL ; const vpx_codec_err_t res = vpx_codec_encode ( codec , img , frame_index , 1 , 0 , VPX_DL_GOOD_QUALITY ) ; if ( res != VPX_CODEC_OK ) die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame\" ) ; <S2SV_StartBug> while ( ( pkt = vpx_codec_get_cx_data ( codec , & iter ) ) != NULL ) { <S2SV_EndBug> if ( pkt -> kind == VPX_CODEC_CX_FRAME_PKT ) { const int keyframe = ( pkt -> data . frame . flags & VPX_FRAME_IS_KEY ) != 0 ; if ( ! vpx_video_writer_write_frame ( writer , pkt -> data . frame . buf , pkt -> data . frame . sz , pkt -> data . frame . pts ) ) { die_codec ( codec , \"Failed<S2SV_blank>to<S2SV_blank>write<S2SV_blank>compressed<S2SV_blank>frame\" ) ; } printf ( keyframe ? \"K\" : \".\" ) ; fflush ( stdout ) ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> encode_frame ( vpx_codec_ctx_t <S2SV_ModStart> writer ) { int got_pkts = 0 ; <S2SV_ModStart> NULL ) { got_pkts = 1 ; <S2SV_ModStart> ; } } return got_pkts ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5842\n\n```\nCWE-125 static inline signed int ReadPropertySignedLong ( const EndianType endian , const unsigned char * buffer ) { union { unsigned int unsigned_value ; signed int signed_value ; } quantum ; unsigned int value ; if ( endian == LSBEndian ) { <S2SV_StartBug> value = ( unsigned int ) ( ( buffer [ 3 ] << 24 ) | ( buffer [ 2 ] << 16 ) | <S2SV_EndBug> <S2SV_StartBug> ( buffer [ 1 ] << 8 ) | ( buffer [ 0 ] ) ) ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffffffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; } <S2SV_StartBug> value = ( unsigned int ) ( ( buffer [ 0 ] << 24 ) | ( buffer [ 1 ] << 16 ) | <S2SV_EndBug> <S2SV_StartBug> ( buffer [ 2 ] << 8 ) | buffer [ 3 ] ) ; <S2SV_EndBug> <S2SV_StartBug> quantum . unsigned_value = ( value & 0xffffffff ) ; <S2SV_EndBug> return ( quantum . signed_value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned int ) <S2SV_ModEnd> buffer [ 3 <S2SV_ModStart> ] << 24 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 2 <S2SV_ModStart> ] << 16 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 8 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; quantum . <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffffffff <S2SV_ModStart> value & 0xffffffff <S2SV_ModEnd> ; return ( <S2SV_ModStart> unsigned int ) <S2SV_ModEnd> buffer [ 0 <S2SV_ModStart> ] << 24 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 1 <S2SV_ModStart> ] << 16 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 2 <S2SV_ModStart> ] << 8 ; value |= ( unsigned int ) <S2SV_ModEnd> buffer [ 3 <S2SV_ModStart> [ 3 ] <S2SV_ModEnd> ; quantum . <S2SV_ModStart> . unsigned_value = <S2SV_ModEnd> value & 0xffffffff <S2SV_ModStart> value & 0xffffffff <S2SV_ModEnd> ; return (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3951\n\n```\nCWE-000 int usbnet_probe ( struct usb_interface * udev , const struct usb_device_id * prod ) { struct usbnet * dev ; struct net_device * net ; struct usb_host_interface * interface ; struct driver_info * info ; struct usb_device * xdev ; int status ; const char * name ; struct usb_driver * driver = to_usb_driver ( udev -> dev . driver ) ; if ( ! driver -> supports_autosuspend ) { driver -> supports_autosuspend = 1 ; pm_runtime_enable ( & udev -> dev ) ; } name = udev -> dev . driver -> name ; info = ( struct driver_info * ) prod -> driver_info ; if ( ! info ) { dev_dbg ( & udev -> dev , \"blacklisted<S2SV_blank>by<S2SV_blank>%s\\\\n\" , name ) ; return - ENODEV ; } xdev = interface_to_usbdev ( udev ) ; interface = udev -> cur_altsetting ; status = - ENOMEM ; net = alloc_etherdev ( sizeof ( * dev ) ) ; if ( ! net ) goto out ; SET_NETDEV_DEV ( net , & udev -> dev ) ; dev = netdev_priv ( net ) ; dev -> udev = xdev ; dev -> intf = udev ; dev -> driver_info = info ; dev -> driver_name = name ; dev -> msg_enable = netif_msg_init ( msg_level , NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK ) ; init_waitqueue_head ( & dev -> wait ) ; skb_queue_head_init ( & dev -> rxq ) ; skb_queue_head_init ( & dev -> txq ) ; skb_queue_head_init ( & dev -> done ) ; skb_queue_head_init ( & dev -> rxq_pause ) ; dev -> bh . func = usbnet_bh ; dev -> bh . data = ( unsigned long ) dev ; INIT_WORK ( & dev -> kevent , usbnet_deferred_kevent ) ; init_usb_anchor ( & dev -> deferred ) ; dev -> delay . function = usbnet_bh ; dev -> delay . data = ( unsigned long ) dev ; init_timer ( & dev -> delay ) ; mutex_init ( & dev -> phy_mutex ) ; mutex_init ( & dev -> interrupt_mutex ) ; dev -> interrupt_count = 0 ; dev -> net = net ; strcpy ( net -> name , \"usb%d\" ) ; memcpy ( net -> dev_addr , node_id , sizeof node_id ) ; dev -> hard_mtu = net -> mtu + net -> hard_header_len ; net -> netdev_ops = & usbnet_netdev_ops ; net -> watchdog_timeo = TX_TIMEOUT_JIFFIES ; net -> ethtool_ops = & usbnet_ethtool_ops ; if ( info -> bind ) { status = info -> bind ( dev , udev ) ; if ( status < 0 ) goto out1 ; if ( ( dev -> driver_info -> flags & FLAG_ETHER ) != 0 && ( ( dev -> driver_info -> flags & FLAG_POINTTOPOINT ) == 0 || ( net -> dev_addr [ 0 ] & 0x02 ) == 0 ) ) strcpy ( net -> name , \"eth%d\" ) ; if ( ( dev -> driver_info -> flags & FLAG_WLAN ) != 0 ) strcpy ( net -> name , \"wlan%d\" ) ; if ( ( dev -> driver_info -> flags & FLAG_WWAN ) != 0 ) strcpy ( net -> name , \"wwan%d\" ) ; if ( ( dev -> driver_info -> flags & FLAG_NOARP ) != 0 ) net -> flags |= IFF_NOARP ; if ( net -> mtu > ( dev -> hard_mtu - net -> hard_header_len ) ) net -> mtu = dev -> hard_mtu - net -> hard_header_len ; } else if ( ! info -> in || ! info -> out ) status = usbnet_get_endpoints ( dev , udev ) ; else { dev -> in = usb_rcvbulkpipe ( xdev , info -> in ) ; dev -> out = usb_sndbulkpipe ( xdev , info -> out ) ; if ( ! ( info -> flags & FLAG_NO_SETINT ) ) status = usb_set_interface ( xdev , interface -> desc . bInterfaceNumber , interface -> desc . bAlternateSetting ) ; else status = 0 ; } if ( status >= 0 && dev -> status ) status = init_status ( dev , udev ) ; if ( status < 0 ) goto out3 ; if ( ! dev -> rx_urb_size ) dev -> rx_urb_size = dev -> hard_mtu ; dev -> maxpacket = usb_maxpacket ( dev -> udev , dev -> out , 1 ) ; if ( ether_addr_equal ( net -> dev_addr , node_id ) ) net -> addr_assign_type = NET_ADDR_RANDOM ; if ( ( dev -> driver_info -> flags & FLAG_WLAN ) != 0 ) SET_NETDEV_DEVTYPE ( net , & wlan_type ) ; if ( ( dev -> driver_info -> flags & FLAG_WWAN ) != 0 ) SET_NETDEV_DEVTYPE ( net , & wwan_type ) ; usbnet_update_max_qlen ( dev ) ; if ( dev -> can_dma_sg && ! ( info -> flags & FLAG_SEND_ZLP ) && ! ( info -> flags & FLAG_MULTI_PACKET ) ) { dev -> padding_pkt = kzalloc ( 1 , GFP_KERNEL ) ; if ( ! dev -> padding_pkt ) { status = - ENOMEM ; goto out4 ; } } status = register_netdev ( net ) ; if ( status ) goto out5 ; netif_info ( dev , probe , dev -> net , \"register<S2SV_blank>\\'%s\\'<S2SV_blank>at<S2SV_blank>usb-%s-%s,<S2SV_blank>%s,<S2SV_blank>%pM\\\\n\" , udev -> dev . driver -> name , xdev -> bus -> bus_name , xdev -> devpath , dev -> driver_info -> description , net -> dev_addr ) ; usb_set_intfdata ( udev , dev ) ; netif_device_attach ( net ) ; if ( dev -> driver_info -> flags & FLAG_LINK_INTR ) usbnet_link_change ( dev , 0 , 0 ) ; return 0 ; out5 : kfree ( dev -> padding_pkt ) ; out4 : usb_free_urb ( dev -> interrupt ) ; out3 : if ( info -> unbind ) info -> unbind ( dev , udev ) ; out1 : <S2SV_StartBug> free_netdev ( net ) ; <S2SV_EndBug> out : return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; out1 : cancel_work_sync ( & dev -> kevent ) ; del_timer_sync ( & dev -> delay ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8650\n\n```\nCWE-20 int mpi_powm ( MPI res , MPI base , MPI exp , MPI mod ) { mpi_ptr_t mp_marker = NULL , bp_marker = NULL , ep_marker = NULL ; mpi_ptr_t xp_marker = NULL ; mpi_ptr_t tspace = NULL ; mpi_ptr_t rp , ep , mp , bp ; mpi_size_t esize , msize , bsize , rsize ; int esign , msign , bsign , rsign ; mpi_size_t size ; int mod_shift_cnt ; int negative_result ; int assign_rp = 0 ; mpi_size_t tsize = 0 ; int rc = - ENOMEM ; esize = exp -> nlimbs ; msize = mod -> nlimbs ; size = 2 * msize ; esign = exp -> sign ; msign = mod -> sign ; rp = res -> d ; ep = exp -> d ; if ( ! msize ) return - EINVAL ; if ( ! esize ) { <S2SV_StartBug> rp [ 0 ] = 1 ; <S2SV_EndBug> <S2SV_StartBug> res -> nlimbs = ( msize == 1 && mod -> d [ 0 ] == 1 ) ? 0 : 1 ; <S2SV_EndBug> res -> sign = 0 ; goto leave ; } mp = mp_marker = mpi_alloc_limb_space ( msize ) ; if ( ! mp ) goto enomem ; mod_shift_cnt = count_leading_zeros ( mod -> d [ msize - 1 ] ) ; if ( mod_shift_cnt ) mpihelp_lshift ( mp , mod -> d , msize , mod_shift_cnt ) ; else MPN_COPY ( mp , mod -> d , msize ) ; bsize = base -> nlimbs ; bsign = base -> sign ; if ( bsize > msize ) { bp = bp_marker = mpi_alloc_limb_space ( bsize + 1 ) ; if ( ! bp ) goto enomem ; MPN_COPY ( bp , base -> d , bsize ) ; mpihelp_divrem ( bp + msize , 0 , bp , bsize , mp , msize ) ; bsize = msize ; MPN_NORMALIZE ( bp , bsize ) ; } else bp = base -> d ; if ( ! bsize ) { res -> nlimbs = 0 ; res -> sign = 0 ; goto leave ; } if ( res -> alloced < size ) { if ( rp == ep || rp == mp || rp == bp ) { rp = mpi_alloc_limb_space ( size ) ; if ( ! rp ) goto enomem ; assign_rp = 1 ; } else { if ( mpi_resize ( res , size ) < 0 ) goto enomem ; rp = res -> d ; } } else { if ( rp == bp ) { BUG_ON ( bp_marker ) ; bp = bp_marker = mpi_alloc_limb_space ( bsize ) ; if ( ! bp ) goto enomem ; MPN_COPY ( bp , rp , bsize ) ; } if ( rp == ep ) { ep = ep_marker = mpi_alloc_limb_space ( esize ) ; if ( ! ep ) goto enomem ; MPN_COPY ( ep , rp , esize ) ; } if ( rp == mp ) { BUG_ON ( mp_marker ) ; mp = mp_marker = mpi_alloc_limb_space ( msize ) ; if ( ! mp ) goto enomem ; MPN_COPY ( mp , rp , msize ) ; } } MPN_COPY ( rp , bp , bsize ) ; rsize = bsize ; rsign = bsign ; { mpi_size_t i ; mpi_ptr_t xp ; int c ; mpi_limb_t e ; mpi_limb_t carry_limb ; struct karatsuba_ctx karactx ; xp = xp_marker = mpi_alloc_limb_space ( 2 * ( msize + 1 ) ) ; if ( ! xp ) goto enomem ; memset ( & karactx , 0 , sizeof karactx ) ; negative_result = ( ep [ 0 ] & 1 ) && base -> sign ; i = esize - 1 ; e = ep [ i ] ; c = count_leading_zeros ( e ) ; e = ( e << c ) << 1 ; c = BITS_PER_MPI_LIMB - 1 - c ; for ( ; ; ) { while ( c ) { mpi_ptr_t tp ; mpi_size_t xsize ; if ( rsize < KARATSUBA_THRESHOLD ) mpih_sqr_n_basecase ( xp , rp , rsize ) ; else { if ( ! tspace ) { tsize = 2 * rsize ; tspace = mpi_alloc_limb_space ( tsize ) ; if ( ! tspace ) goto enomem ; } else if ( tsize < ( 2 * rsize ) ) { mpi_free_limb_space ( tspace ) ; tsize = 2 * rsize ; tspace = mpi_alloc_limb_space ( tsize ) ; if ( ! tspace ) goto enomem ; } mpih_sqr_n ( xp , rp , rsize , tspace ) ; } xsize = 2 * rsize ; if ( xsize > msize ) { mpihelp_divrem ( xp + msize , 0 , xp , xsize , mp , msize ) ; xsize = msize ; } tp = rp ; rp = xp ; xp = tp ; rsize = xsize ; if ( ( mpi_limb_signed_t ) e < 0 ) { if ( bsize < KARATSUBA_THRESHOLD ) { mpi_limb_t tmp ; if ( mpihelp_mul ( xp , rp , rsize , bp , bsize , & tmp ) < 0 ) goto enomem ; } else { if ( mpihelp_mul_karatsuba_case ( xp , rp , rsize , bp , bsize , & karactx ) < 0 ) goto enomem ; } xsize = rsize + bsize ; if ( xsize > msize ) { mpihelp_divrem ( xp + msize , 0 , xp , xsize , mp , msize ) ; xsize = msize ; } tp = rp ; rp = xp ; xp = tp ; rsize = xsize ; } e <<= 1 ; c -- ; } i -- ; if ( i < 0 ) break ; e = ep [ i ] ; c = BITS_PER_MPI_LIMB ; } if ( mod_shift_cnt ) { carry_limb = mpihelp_lshift ( res -> d , rp , rsize , mod_shift_cnt ) ; rp = res -> d ; if ( carry_limb ) { rp [ rsize ] = carry_limb ; rsize ++ ; } } else { MPN_COPY ( res -> d , rp , rsize ) ; rp = res -> d ; } if ( rsize >= msize ) { mpihelp_divrem ( rp + msize , 0 , rp , rsize , mp , msize ) ; rsize = msize ; } if ( mod_shift_cnt ) mpihelp_rshift ( rp , rp , rsize , mod_shift_cnt ) ; MPN_NORMALIZE ( rp , rsize ) ; mpihelp_release_karatsuba_ctx ( & karactx ) ; } if ( negative_result && rsize ) { if ( mod_shift_cnt ) mpihelp_rshift ( mp , mp , msize , mod_shift_cnt ) ; mpihelp_sub ( rp , mp , msize , rp , rsize ) ; rsize = msize ; rsign = msign ; MPN_NORMALIZE ( rp , rsize ) ; } res -> nlimbs = rsize ; res -> sign = rsign ; leave : rc = 0 ; enomem : if ( assign_rp ) mpi_assign_limb_space ( res , rp , size ) ; if ( mp_marker ) mpi_free_limb_space ( mp_marker ) ; if ( bp_marker ) mpi_free_limb_space ( bp_marker ) ; if ( ep_marker ) mpi_free_limb_space ( ep_marker ) ; if ( xp_marker ) mpi_free_limb_space ( xp_marker ) ; if ( tspace ) mpi_free_limb_space ( tspace ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> esize ) { <S2SV_ModEnd> res -> nlimbs <S2SV_ModStart> : 1 ; if ( res -> nlimbs ) { if ( mpi_resize ( res , 1 ) < 0 ) goto enomem ; rp = res -> d ; rp [ 0 ] = 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 int DecodeTime ( char * str , int * tmask , struct tm * tm , fsec_t * fsec ) { char * cp ; * tmask = DTK_TIME_M ; tm -> tm_hour = strtol ( str , & cp , 10 ) ; if ( * cp != ':' ) return - 1 ; str = cp + 1 ; tm -> tm_min = strtol ( str , & cp , 10 ) ; if ( * cp == '\\\\0' ) { tm -> tm_sec = 0 ; * fsec = 0 ; } else if ( * cp != ':' ) return - 1 ; else { str = cp + 1 ; tm -> tm_sec = strtol ( str , & cp , 10 ) ; if ( * cp == '\\\\0' ) * fsec = 0 ; else if ( * cp == '.' ) { # ifdef HAVE_INT64_TIMESTAMP <S2SV_StartBug> char fstr [ MAXDATELEN + 1 ] ; <S2SV_EndBug> strncpy ( fstr , ( cp + 1 ) , 7 ) ; strcpy ( fstr + strlen ( fstr ) , \"000000\" ) ; * ( fstr + 6 ) = '\\\\0' ; * fsec = strtol ( fstr , & cp , 10 ) ; # else str = cp ; * fsec = strtod ( str , & cp ) ; # endif if ( * cp != '\\\\0' ) return - 1 ; } else return - 1 ; } # ifdef HAVE_INT64_TIMESTAMP if ( tm -> tm_hour < 0 || tm -> tm_min < 0 || tm -> tm_min > 59 || tm -> tm_sec < 0 || tm -> tm_sec > 59 || * fsec >= USECS_PER_SEC ) return - 1 ; # else if ( tm -> tm_hour < 0 || tm -> tm_min < 0 || tm -> tm_min > 59 || tm -> tm_sec < 0 || tm -> tm_sec > 59 || * fsec >= 1 ) return - 1 ; # endif return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char fstr [ 7 ] ; int i ; cp ++ ; for ( i = 0 ; i < 6 ; i ++ ) fstr [ i ] = * cp != '\\\\0' ? * cp ++ : '0' ; fstr [ i ] <S2SV_ModEnd> = '\\\\0' ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int em_ret ( struct x86_emulate_ctxt * ctxt ) { <S2SV_StartBug> ctxt -> dst . type = OP_REG ; <S2SV_EndBug> ctxt -> dst . addr . reg = & ctxt -> _eip ; <S2SV_StartBug> ctxt -> dst . bytes = ctxt -> op_bytes ; <S2SV_EndBug> return em_pop ( ctxt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt ) { int rc ; unsigned long eip ; rc = emulate_pop ( ctxt , & eip , <S2SV_ModEnd> ctxt -> op_bytes <S2SV_ModStart> ctxt -> op_bytes ) ; if ( rc != X86EMUL_CONTINUE ) return rc ; return assign_eip_near ( ctxt , eip <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-88(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17456\n\n```\nCWE-88 static int fsck_gitmodules_fn ( const char * var , const char * value , void * vdata ) { struct fsck_gitmodules_data * data = vdata ; const char * subsection , * key ; int subsection_len ; char * name ; if ( parse_config_key ( var , \"submodule\" , & subsection , & subsection_len , & key ) < 0 || ! subsection ) return 0 ; name = xmemdupz ( subsection , subsection_len ) ; if ( check_submodule_name ( name ) < 0 ) data -> ret |= report ( data -> options , data -> obj , FSCK_MSG_GITMODULES_NAME , \"disallowed<S2SV_blank>submodule<S2SV_blank>name:<S2SV_blank>%s\" , name ) ; if ( ! strcmp ( key , \"url\" ) && value && looks_like_command_line_option ( value ) ) data -> ret |= report ( data -> options , data -> obj , FSCK_MSG_GITMODULES_URL , \"disallowed<S2SV_blank>submodule<S2SV_blank>url:<S2SV_blank>%s\" , value ) ; <S2SV_StartBug> free ( name ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ) ; if ( ! strcmp ( key , \"path\" ) && value && looks_like_command_line_option ( value ) ) data -> ret |= report ( data -> options , data -> obj , FSCK_MSG_GITMODULES_PATH , \"disallowed<S2SV_blank>submodule<S2SV_blank>path:<S2SV_blank>%s\" , value ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 SQLITE_PRIVATE ExprList * sqlite3ExprListAppend ( Parse * pParse , ExprList * pList , Expr * pExpr ) { struct ExprList_item * pItem ; sqlite3 * db = pParse -> db ; assert ( db != 0 ) ; if ( pList == 0 ) { pList = sqlite3DbMallocRawNN ( db , sizeof ( ExprList ) ) ; if ( pList == 0 ) { goto no_mem ; } pList -> nExpr = 0 ; } else if ( ( pList -> nExpr & ( pList -> nExpr - 1 ) ) == 0 ) { ExprList * pNew ; pNew = sqlite3DbRealloc ( db , pList , <S2SV_StartBug> sizeof ( * pList ) + ( 2 * pList -> nExpr - 1 ) * sizeof ( pList -> a [ 0 ] ) ) ; <S2SV_EndBug> if ( pNew == 0 ) { goto no_mem ; } pList = pNew ; } pItem = & pList -> a [ pList -> nExpr ++ ] ; assert ( offsetof ( struct ExprList_item , zName ) == sizeof ( pItem -> pExpr ) ) ; assert ( offsetof ( struct ExprList_item , pExpr ) == 0 ) ; memset ( & pItem -> zName , 0 , sizeof ( * pItem ) - offsetof ( struct ExprList_item , zName ) ) ; pItem -> pExpr = pExpr ; return pList ; no_mem : sqlite3ExprDelete ( db , pExpr ) ; sqlite3ExprListDelete ( db , pList ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 2 * ( sqlite3_int64 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int rd_pick_intra4x4mby_modes ( MACROBLOCK * mb , int * Rate , int * rate_y , int * Distortion , int best_rd ) { MACROBLOCKD * const xd = & mb -> e_mbd ; int i ; int cost = mb -> mbmode_cost [ xd -> frame_type ] [ B_PRED ] ; int distortion = 0 ; int tot_rate_y = 0 ; int64_t total_rd = 0 ; ENTROPY_CONTEXT_PLANES t_above , t_left ; ENTROPY_CONTEXT * ta ; ENTROPY_CONTEXT * tl ; const int * bmode_costs ; <S2SV_StartBug> vpx_memcpy ( & t_above , mb -> e_mbd . above_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & t_left , mb -> e_mbd . left_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> ta = ( ENTROPY_CONTEXT * ) & t_above ; tl = ( ENTROPY_CONTEXT * ) & t_left ; intra_prediction_down_copy ( xd , xd -> dst . y_buffer - xd -> dst . y_stride + 16 ) ; bmode_costs = mb -> inter_bmode_costs ; for ( i = 0 ; i < 16 ; i ++ ) { MODE_INFO * const mic = xd -> mode_info_context ; const int mis = xd -> mode_info_stride ; B_PREDICTION_MODE UNINITIALIZED_IS_SAFE ( best_mode ) ; int UNINITIALIZED_IS_SAFE ( r ) , UNINITIALIZED_IS_SAFE ( ry ) , UNINITIALIZED_IS_SAFE ( d ) ; if ( mb -> e_mbd . frame_type == KEY_FRAME ) { const B_PREDICTION_MODE A = above_block_mode ( mic , i , mis ) ; const B_PREDICTION_MODE L = left_block_mode ( mic , i ) ; bmode_costs = mb -> bmode_costs [ A ] [ L ] ; } total_rd += rd_pick_intra4x4block ( mb , mb -> block + i , xd -> block + i , & best_mode , bmode_costs , ta + vp8_block2above [ i ] , tl + vp8_block2left [ i ] , & r , & ry , & d ) ; cost += r ; distortion += d ; tot_rate_y += ry ; mic -> bmi [ i ] . as_mode = best_mode ; if ( total_rd >= ( int64_t ) best_rd ) break ; } if ( total_rd >= ( int64_t ) best_rd ) return INT_MAX ; * Rate = cost ; * rate_y = tot_rate_y ; * Distortion = distortion ; return RDCOST ( mb -> rdmult , mb -> rddiv , cost , distortion ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * bmode_costs ; memcpy <S2SV_ModEnd> ( & t_above <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & t_left\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14734\n\n```\nCWE-416 static struct ucma_multicast * ucma_alloc_multicast ( struct ucma_context * ctx ) { struct ucma_multicast * mc ; mc = kzalloc ( sizeof ( * mc ) , GFP_KERNEL ) ; if ( ! mc ) return NULL ; mutex_lock ( & mut ) ; <S2SV_StartBug> mc -> id = idr_alloc ( & multicast_idr , mc , 0 , 0 , GFP_KERNEL ) ; <S2SV_EndBug> mutex_unlock ( & mut ) ; if ( mc -> id < 0 ) goto error ; mc -> ctx = ctx ; list_add_tail ( & mc -> list , & ctx -> mc_list ) ; return mc ; error : kfree ( mc ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & multicast_idr , NULL <S2SV_ModEnd> , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static void nfs4_close_done ( struct rpc_task * task , void * data ) { struct nfs4_closedata * calldata = data ; struct nfs4_state * state = calldata -> state ; struct nfs_server * server = NFS_SERVER ( calldata -> inode ) ; if ( RPC_ASSASSINATED ( task ) ) return ; switch ( task -> tk_status ) { case 0 : nfs_set_open_stateid ( state , & calldata -> res . stateid , 0 ) ; renew_lease ( server , calldata -> timestamp ) ; break ; case - NFS4ERR_STALE_STATEID : case - NFS4ERR_OLD_STATEID : case - NFS4ERR_BAD_STATEID : case - NFS4ERR_EXPIRED : <S2SV_StartBug> if ( calldata -> arg . open_flags == 0 ) <S2SV_EndBug> break ; default : if ( nfs4_async_handle_error ( task , server , state ) == - EAGAIN ) { rpc_restart_call ( task ) ; return ; } } nfs_refresh_inode ( calldata -> inode , calldata -> res . fattr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> arg . fmode <S2SV_ModEnd> == 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_cond_prob_diff_update ( vp9_writer * w , vp9_prob * oldp , <S2SV_EndBug> const unsigned int ct [ 2 ] ) { <S2SV_StartBug> const vp9_prob upd = DIFF_UPDATE_PROB ; <S2SV_EndBug> <S2SV_StartBug> vp9_prob newp = get_binary_prob ( ct [ 0 ] , ct [ 1 ] ) ; <S2SV_EndBug> const int savings = vp9_prob_diff_update_savings_search ( ct , * oldp , & newp , upd ) ; assert ( newp >= 1 ) ; if ( savings > 0 ) { <S2SV_StartBug> vp9_write ( w , 1 , upd ) ; <S2SV_EndBug> vp9_write_prob_diff_update ( w , newp , * oldp ) ; * oldp = newp ; } else { <S2SV_StartBug> vp9_write ( w , 0 , upd ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void vp9_cond_prob_diff_update ( vpx_writer <S2SV_ModEnd> * w , <S2SV_ModStart> * w , vpx_prob <S2SV_ModEnd> * oldp , <S2SV_ModStart> ) { const vpx_prob <S2SV_ModEnd> upd = DIFF_UPDATE_PROB <S2SV_ModStart> = DIFF_UPDATE_PROB ; vpx_prob <S2SV_ModEnd> newp = get_binary_prob <S2SV_ModStart> 0 ) { vpx_write <S2SV_ModEnd> ( w , <S2SV_ModStart> } else { vpx_write <S2SV_ModEnd> ( w ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-326(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10638\n\n```\nCWE-326 __be32 ipv6_proxy_select_ident ( struct net * net , struct sk_buff * skb ) { <S2SV_StartBug> static u32 ip6_proxy_idents_hashrnd __read_mostly ; <S2SV_EndBug> struct in6_addr buf [ 2 ] ; struct in6_addr * addrs ; u32 id ; addrs = skb_header_pointer ( skb , skb_network_offset ( skb ) + offsetof ( struct ipv6hdr , saddr ) , sizeof ( buf ) , buf ) ; if ( ! addrs ) return 0 ; <S2SV_StartBug> net_get_random_once ( & ip6_proxy_idents_hashrnd , <S2SV_EndBug> sizeof ( ip6_proxy_idents_hashrnd ) ) ; <S2SV_StartBug> id = __ipv6_select_ident ( net , ip6_proxy_idents_hashrnd , <S2SV_EndBug> & addrs [ 1 ] , & addrs [ 0 ] ) ; return htonl ( id ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) { <S2SV_ModEnd> struct in6_addr buf <S2SV_ModStart> return 0 ; <S2SV_ModEnd> id = __ipv6_select_ident <S2SV_ModStart> ( net , <S2SV_ModEnd> & addrs [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13301\n\n```\nCWE-476 <S2SV_StartBug> static int mpeg4_decode_profile_level ( MpegEncContext * s , GetBitContext * gb ) <S2SV_EndBug> { s -> avctx -> profile = get_bits ( gb , 4 ) ; <S2SV_StartBug> s -> avctx -> level = get_bits ( gb , 4 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( s -> avctx -> profile == 0 && s -> avctx -> level == 8 ) { <S2SV_EndBug> <S2SV_StartBug> s -> avctx -> level = 0 ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> GetBitContext * gb , int * profile , int * level ) { * <S2SV_ModEnd> profile = get_bits <S2SV_ModStart> 4 ) ; * <S2SV_ModEnd> level = get_bits <S2SV_ModStart> ; if ( * <S2SV_ModEnd> profile == 0 <S2SV_ModStart> == 0 && * <S2SV_ModEnd> level == 8 <S2SV_ModStart> 8 ) { * <S2SV_ModEnd> level = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2486\n\n```\nCWE-264 const char * string_of_NPPVariable ( int variable ) { const char * str ; switch ( variable ) { # define _ ( VAL ) case VAL : str = # VAL ; break ; _ ( NPPVpluginNameString ) ; _ ( NPPVpluginDescriptionString ) ; _ ( NPPVpluginWindowBool ) ; _ ( NPPVpluginTransparentBool ) ; _ ( NPPVjavaClass ) ; _ ( NPPVpluginWindowSize ) ; _ ( NPPVpluginTimerInterval ) ; _ ( NPPVpluginScriptableInstance ) ; _ ( NPPVpluginScriptableIID ) ; _ ( NPPVjavascriptPushCallerBool ) ; _ ( NPPVpluginKeepLibraryInMemory ) ; _ ( NPPVpluginNeedsXEmbed ) ; _ ( NPPVpluginScriptableNPObject ) ; _ ( NPPVformValue ) ; <S2SV_StartBug> # undef _ <S2SV_EndBug> default : switch ( variable & 0xff ) { # define _ ( VAL , VAR ) case VAL : str = # VAR ; break _ ( 10 , NPPVpluginScriptableInstance ) ; # undef _ default : str = \"<unknown<S2SV_blank>variable>\" ; break ; } break ; } return str ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NPPVformValue ) ; _ ( NPPVpluginUrlRequestsDisplayedBool ) ; _ ( NPPVpluginWantsAllNetworkStreams ) ; _ ( NPPVpluginNativeAccessibleAtkPlugId ) ; _ ( NPPVpluginCancelSrcStream ) ; _ ( NPPVSupportsAdvancedKeyHandling ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static MV_REFERENCE_FRAME get_frame_type ( const VP9_COMP * cpi ) { if ( frame_is_intra_only ( & cpi -> common ) ) return INTRA_FRAME ; else if ( cpi -> rc . is_src_frame_alt_ref && cpi -> refresh_golden_frame ) return ALTREF_FRAME ; else if ( cpi -> refresh_golden_frame || cpi -> refresh_alt_ref_frame ) <S2SV_StartBug> return LAST_FRAME ; <S2SV_EndBug> else <S2SV_StartBug> return GOLDEN_FRAME ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> refresh_alt_ref_frame ) return GOLDEN_FRAME <S2SV_ModEnd> ; else return <S2SV_ModStart> ; else return LAST_FRAME <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-134(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8617\n\n```\nCWE-134 static void zend_throw_or_error ( int fetch_type , zend_class_entry * exception_ce , const char * format , ... ) { va_list va ; char * message = NULL ; va_start ( va , format ) ; zend_vspprintf ( & message , 0 , format , va ) ; if ( fetch_type & ZEND_FETCH_CLASS_EXCEPTION ) { <S2SV_StartBug> zend_throw_error ( exception_ce , message ) ; <S2SV_EndBug> } else { zend_error ( E_ERROR , \"%s\" , message ) ; } efree ( message ) ; va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( exception_ce , \"%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 void __sock_recv_timestamp ( struct msghdr * msg , struct sock * sk , struct sk_buff * skb ) { int need_software_tstamp = sock_flag ( sk , SOCK_RCVTSTAMP ) ; struct scm_timestamping tss ; int empty = 1 ; struct skb_shared_hwtstamps * shhwtstamps = skb_hwtstamps ( skb ) ; if ( need_software_tstamp && skb -> tstamp == 0 ) __net_timestamp ( skb ) ; if ( need_software_tstamp ) { if ( ! sock_flag ( sk , SOCK_RCVTSTAMPNS ) ) { struct timeval tv ; skb_get_timestamp ( skb , & tv ) ; put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMP , sizeof ( tv ) , & tv ) ; } else { struct timespec ts ; skb_get_timestampns ( skb , & ts ) ; put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPNS , sizeof ( ts ) , & ts ) ; } } memset ( & tss , 0 , sizeof ( tss ) ) ; if ( ( sk -> sk_tsflags & SOF_TIMESTAMPING_SOFTWARE ) && ktime_to_timespec_cond ( skb -> tstamp , tss . ts + 0 ) ) empty = 0 ; if ( shhwtstamps && ( sk -> sk_tsflags & SOF_TIMESTAMPING_RAW_HARDWARE ) && ktime_to_timespec_cond ( shhwtstamps -> hwtstamp , tss . ts + 2 ) ) empty = 0 ; if ( ! empty ) { put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPING , sizeof ( tss ) , & tss ) ; if ( skb_is_err_queue ( skb ) && skb -> len && <S2SV_StartBug> ( sk -> sk_tsflags & SOF_TIMESTAMPING_OPT_STATS ) ) <S2SV_EndBug> put_cmsg ( msg , SOL_SOCKET , SCM_TIMESTAMPING_OPT_STATS , skb -> len , skb -> data ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> len && SKB_EXT_ERR ( skb ) -> opt_stats <S2SV_ModEnd> ) put_cmsg (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4444\n\n```\nCWE-000 static int ip6_frag_queue ( struct frag_queue * fq , struct sk_buff * skb , struct frag_hdr * fhdr , int nhoff ) { struct sk_buff * prev , * next ; struct net_device * dev ; int offset , end ; struct net * net = dev_net ( skb_dst ( skb ) -> dev ) ; if ( fq -> q . last_in & INET_FRAG_COMPLETE ) goto err ; offset = ntohs ( fhdr -> frag_off ) & ~ 0x7 ; end = offset + ( ntohs ( ipv6_hdr ( skb ) -> payload_len ) - ( ( u8 * ) ( fhdr + 1 ) - ( u8 * ) ( ipv6_hdr ( skb ) + 1 ) ) ) ; if ( ( unsigned int ) end > IPV6_MAXPLEN ) { IP6_INC_STATS_BH ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_INHDRERRORS ) ; icmpv6_param_prob ( skb , ICMPV6_HDR_FIELD , ( ( u8 * ) & fhdr -> frag_off - skb_network_header ( skb ) ) ) ; return - 1 ; } if ( skb -> ip_summed == CHECKSUM_COMPLETE ) { const unsigned char * nh = skb_network_header ( skb ) ; skb -> csum = csum_sub ( skb -> csum , csum_partial ( nh , ( u8 * ) ( fhdr + 1 ) - nh , 0 ) ) ; } if ( ! ( fhdr -> frag_off & htons ( IP6_MF ) ) ) { if ( end < fq -> q . len || ( ( fq -> q . last_in & INET_FRAG_LAST_IN ) && end != fq -> q . len ) ) goto err ; fq -> q . last_in |= INET_FRAG_LAST_IN ; fq -> q . len = end ; } else { if ( end & 0x7 ) { IP6_INC_STATS_BH ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_INHDRERRORS ) ; icmpv6_param_prob ( skb , ICMPV6_HDR_FIELD , offsetof ( struct ipv6hdr , payload_len ) ) ; return - 1 ; } if ( end > fq -> q . len ) { if ( fq -> q . last_in & INET_FRAG_LAST_IN ) goto err ; fq -> q . len = end ; } } if ( end == offset ) goto err ; if ( ! pskb_pull ( skb , ( u8 * ) ( fhdr + 1 ) - skb -> data ) ) goto err ; if ( pskb_trim_rcsum ( skb , end - offset ) ) goto err ; prev = fq -> q . fragments_tail ; if ( ! prev || FRAG6_CB ( prev ) -> offset < offset ) { next = NULL ; goto found ; } prev = NULL ; for ( next = fq -> q . fragments ; next != NULL ; next = next -> next ) { if ( FRAG6_CB ( next ) -> offset >= offset ) break ; prev = next ; } found : <S2SV_StartBug> if ( prev ) { <S2SV_EndBug> <S2SV_StartBug> int i = ( FRAG6_CB ( prev ) -> offset + prev -> len ) - offset ; <S2SV_EndBug> <S2SV_StartBug> if ( i > 0 ) { <S2SV_EndBug> offset += i ; if ( end <= offset ) goto err ; if ( ! pskb_pull ( skb , i ) ) goto err ; if ( skb -> ip_summed != CHECKSUM_UNNECESSARY ) skb -> ip_summed = CHECKSUM_NONE ; } } <S2SV_StartBug> while ( next && FRAG6_CB ( next ) -> offset < end ) { <S2SV_EndBug> int i = end - FRAG6_CB ( next ) -> offset ; if ( i < next -> len ) { if ( ! pskb_pull ( next , i ) ) goto err ; FRAG6_CB ( next ) -> offset += i ; fq -> q . meat -= i ; if ( next -> ip_summed != CHECKSUM_UNNECESSARY ) next -> ip_summed = CHECKSUM_NONE ; break ; } else { struct sk_buff * free_it = next ; next = next -> next ; if ( prev ) prev -> next = next ; else fq -> q . fragments = next ; fq -> q . meat -= free_it -> len ; frag_kfree_skb ( fq -> q . net , free_it ) ; } } FRAG6_CB ( skb ) -> offset = offset ; skb -> next = next ; if ( ! next ) fq -> q . fragments_tail = skb ; if ( prev ) prev -> next = skb ; else fq -> q . fragments = skb ; dev = skb -> dev ; if ( dev ) { fq -> iif = dev -> ifindex ; skb -> dev = NULL ; } fq -> q . stamp = skb -> tstamp ; fq -> q . meat += skb -> len ; atomic_add ( skb -> truesize , & fq -> q . net -> mem ) ; if ( offset == 0 ) { fq -> nhoffset = nhoff ; fq -> q . last_in |= INET_FRAG_FIRST_IN ; } if ( fq -> q . last_in == ( INET_FRAG_FIRST_IN | INET_FRAG_LAST_IN ) && fq -> q . meat == fq -> q . len ) return ip6_frag_reasm ( fq , prev , dev ) ; write_lock ( & ip6_frags . lock ) ; list_move_tail ( & fq -> q . lru_list , & fq -> q . net -> lru_list ) ; write_unlock ( & ip6_frags . lock ) ; return - 1 ; <S2SV_StartBug> err : <S2SV_EndBug> IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_REASMFAILS ) ; kfree_skb ( skb ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( prev && <S2SV_ModEnd> ( FRAG6_CB ( <S2SV_ModStart> ) - offset <S2SV_ModEnd> > 0 ) <S2SV_ModStart> > 0 ) goto discard_fq ; if <S2SV_ModEnd> ( next && <S2SV_ModStart> < end ) goto discard_fq ; <S2SV_ModEnd> FRAG6_CB ( skb <S2SV_ModStart> - 1 ; discard_fq : fq_kill ( fq ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10161\n\n```\nCWE-125 PHPAPI int php_var_unserialize ( UNSERIALIZE_PARAMETER ) { const unsigned char * cursor , * limit , * marker , * start ; zval * * rval_ref ; limit = max ; cursor = * p ; if ( YYCURSOR >= YYLIMIT ) { return 0 ; } if ( var_hash && cursor [ 0 ] != 'R' ) { var_push ( var_hash , rval ) ; } start = cursor ; <S2SV_StartBug> # line 496 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> { YYCTYPE yych ; static const unsigned char yybm [ ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 128 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , } ; if ( ( YYLIMIT - YYCURSOR ) < 7 ) YYFILL ( 7 ) ; yych = * YYCURSOR ; switch ( yych ) { case 'C' : case 'O' : goto yy13 ; case 'N' : goto yy5 ; case 'R' : goto yy2 ; case 'S' : goto yy10 ; case 'a' : goto yy11 ; case 'b' : goto yy6 ; case 'd' : goto yy8 ; case 'i' : goto yy7 ; case 'o' : goto yy12 ; case 'r' : goto yy4 ; case 's' : goto yy9 ; case '}' : goto yy14 ; default : goto yy16 ; } yy2 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy95 ; yy3 : <S2SV_StartBug> # line 861 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { return 0 ; } <S2SV_StartBug> # line 558 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy4 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy89 ; goto yy3 ; yy5 : yych = * ++ YYCURSOR ; if ( yych == ';' ) goto yy87 ; goto yy3 ; yy6 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy83 ; goto yy3 ; yy7 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy77 ; goto yy3 ; yy8 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy53 ; goto yy3 ; yy9 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy46 ; goto yy3 ; yy10 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy39 ; goto yy3 ; yy11 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy32 ; goto yy3 ; yy12 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy25 ; goto yy3 ; yy13 : yych = * ( YYMARKER = ++ YYCURSOR ) ; if ( yych == ':' ) goto yy17 ; goto yy3 ; yy14 : ++ YYCURSOR ; <S2SV_StartBug> # line 855 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { php_error_docref ( NULL TSRMLS_CC , E_NOTICE , \"Unexpected<S2SV_blank>end<S2SV_blank>of<S2SV_blank>serialized<S2SV_blank>data\" ) ; return 0 ; } <S2SV_StartBug> # line 607 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy16 : yych = * ++ YYCURSOR ; goto yy3 ; yy17 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych == '+' ) goto yy19 ; yy18 : YYCURSOR = YYMARKER ; goto yy3 ; yy19 : yych = * ++ YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } goto yy18 ; yy20 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yybm [ 0 + yych ] & 128 ) { goto yy20 ; } if ( yych <= '/' ) goto yy18 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 708 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , len2 , len3 , maxlen ; long elements ; char * class_name ; zend_class_entry * ce ; zend_class_entry * * pce ; int incomplete_class = 0 ; int custom_object = 0 ; zval * user_func ; zval * retval_ptr ; zval * * args [ 1 ] ; zval * arg_func_name ; if ( ! var_hash ) return 0 ; if ( * start == 'C' ) { custom_object = 1 ; } INIT_PZVAL ( * rval ) ; len2 = len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len || len == 0 ) { * p = start + 2 ; return 0 ; } class_name = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ':' ) { * p = YYCURSOR + 1 ; return 0 ; } len3 = strspn ( class_name , \"0123456789_abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ\\\\177\\\\200\\\\201\\\\202\\\\203\\\\204\\\\205\\\\206\\\\207\\\\210\\\\211\\\\212\\\\213\\\\214\\\\215\\\\216\\\\217\\\\220\\\\221\\\\222\\\\223\\\\224\\\\225\\\\226\\\\227\\\\230\\\\231\\\\232\\\\233\\\\234\\\\235\\\\236\\\\237\\\\240\\\\241\\\\242\\\\243\\\\244\\\\245\\\\246\\\\247\\\\250\\\\251\\\\252\\\\253\\\\254\\\\255\\\\256\\\\257\\\\260\\\\261\\\\262\\\\263\\\\264\\\\265\\\\266\\\\267\\\\270\\\\271\\\\272\\\\273\\\\274\\\\275\\\\276\\\\277\\\\300\\\\301\\\\302\\\\303\\\\304\\\\305\\\\306\\\\307\\\\310\\\\311\\\\312\\\\313\\\\314\\\\315\\\\316\\\\317\\\\320\\\\321\\\\322\\\\323\\\\324\\\\325\\\\326\\\\327\\\\330\\\\331\\\\332\\\\333\\\\334\\\\335\\\\336\\\\337\\\\340\\\\341\\\\342\\\\343\\\\344\\\\345\\\\346\\\\347\\\\350\\\\351\\\\352\\\\353\\\\354\\\\355\\\\356\\\\357\\\\360\\\\361\\\\362\\\\363\\\\364\\\\365\\\\366\\\\367\\\\370\\\\371\\\\372\\\\373\\\\374\\\\375\\\\376\\\\377\\\\\\\\\" ) ; if ( len3 != len ) { * p = YYCURSOR + len3 - len ; return 0 ; } class_name = estrndup ( class_name , len ) ; do { BG ( serialize_lock ) ++ ; if ( zend_lookup_class ( class_name , len2 , & pce TSRMLS_CC ) == SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; return 0 ; } ce = * pce ; break ; } BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; return 0 ; } if ( ( PG ( unserialize_callback_func ) == NULL ) || ( PG ( unserialize_callback_func ) [ 0 ] == '\\\\0' ) ) { incomplete_class = 1 ; ce = PHP_IC_ENTRY ; break ; } MAKE_STD_ZVAL ( user_func ) ; ZVAL_STRING ( user_func , PG ( unserialize_callback_func ) , 1 ) ; args [ 0 ] = & arg_func_name ; MAKE_STD_ZVAL ( arg_func_name ) ; ZVAL_STRING ( arg_func_name , class_name , 1 ) ; BG ( serialize_lock ) ++ ; if ( call_user_function_ex ( CG ( function_table ) , NULL , user_func , & retval_ptr , 1 , args , 0 , NULL TSRMLS_CC ) != SUCCESS ) { BG ( serialize_lock ) -- ; if ( EG ( exception ) ) { efree ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; return 0 ; } php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"defined<S2SV_blank>(%s)<S2SV_blank>but<S2SV_blank>not<S2SV_blank>found\" , user_func -> value . str . val ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; break ; } BG ( serialize_lock ) -- ; if ( retval_ptr ) { zval_ptr_dtor ( & retval_ptr ) ; } if ( EG ( exception ) ) { efree ( class_name ) ; zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; return 0 ; } if ( zend_lookup_class ( class_name , len2 , & pce TSRMLS_CC ) == SUCCESS ) { ce = * pce ; } else { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Function<S2SV_blank>%s()<S2SV_blank>hasn\\'t<S2SV_blank>defined<S2SV_blank>the<S2SV_blank>class<S2SV_blank>it<S2SV_blank>was<S2SV_blank>called<S2SV_blank>for\" , user_func -> value . str . val ) ; incomplete_class = 1 ; ce = PHP_IC_ENTRY ; } zval_ptr_dtor ( & user_func ) ; zval_ptr_dtor ( & arg_func_name ) ; break ; } while ( 1 ) ; * p = YYCURSOR ; if ( custom_object ) { int ret ; ret = object_custom ( UNSERIALIZE_PASSTHRU , ce ) ; if ( ret && incomplete_class ) { php_store_class_name ( * rval , class_name , len2 ) ; } efree ( class_name ) ; return ret ; } elements = object_common1 ( UNSERIALIZE_PASSTHRU , ce ) ; <S2SV_StartBug> if ( incomplete_class ) { <S2SV_EndBug> php_store_class_name ( * rval , class_name , len2 ) ; } efree ( class_name ) ; return object_common2 ( UNSERIALIZE_PASSTHRU , elements ) ; } <S2SV_StartBug> # line 785 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy25 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy26 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; goto yy18 ; } yy26 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy27 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy27 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 699 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { if ( ! var_hash ) return 0 ; INIT_PZVAL ( * rval ) ; <S2SV_StartBug> return object_common2 ( UNSERIALIZE_PASSTHRU , <S2SV_EndBug> <S2SV_StartBug> object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ) ; <S2SV_EndBug> } <S2SV_StartBug> # line 819 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy32 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy33 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; goto yy18 ; yy33 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy34 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy34 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != '{' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 678 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long elements = parse_iv ( start + 2 ) ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; if ( elements < 0 ) { return 0 ; } INIT_PZVAL ( * rval ) ; array_init_size ( * rval , elements ) ; if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_ARRVAL_PP ( rval ) , elements , 0 ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; } <S2SV_StartBug> # line 861 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy39 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy40 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; goto yy18 ; yy40 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy41 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy41 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 643 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } if ( ( str = unserialize_str ( & YYCURSOR , & len , maxlen ) ) == NULL ) { return 0 ; } if ( * ( YYCURSOR ) != \\'\"\\' ) { efree ( str ) ; * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { efree ( str ) ; * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_STRINGL ( * rval , str , len , 0 ) ; return 1 ; } <S2SV_StartBug> # line 917 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy46 : yych = * ++ YYCURSOR ; if ( yych == '+' ) goto yy47 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; goto yy18 ; yy47 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy48 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 2 ) YYFILL ( 2 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy48 ; if ( yych >= ';' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != \\'\"\\' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 610 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { size_t len , maxlen ; char * str ; len = parse_uiv ( start + 2 ) ; maxlen = max - YYCURSOR ; if ( maxlen < len ) { * p = start + 2 ; return 0 ; } str = ( char * ) YYCURSOR ; YYCURSOR += len ; if ( * ( YYCURSOR ) != \\'\"\\' ) { * p = YYCURSOR ; return 0 ; } if ( * ( YYCURSOR + 1 ) != ';' ) { * p = YYCURSOR + 1 ; return 0 ; } YYCURSOR += 2 ; * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_STRINGL ( * rval , str , len , 1 ) ; return 1 ; } <S2SV_StartBug> # line 971 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy53 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych <= ',' ) { if ( yych == '+' ) goto yy57 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy55 ; if ( yych <= '.' ) goto yy60 ; goto yy18 ; } } else { if ( yych <= 'I' ) { if ( yych <= '9' ) goto yy58 ; if ( yych <= 'H' ) goto yy18 ; goto yy56 ; } else { if ( yych != 'N' ) goto yy18 ; } } yych = * ++ YYCURSOR ; if ( yych == 'A' ) goto yy76 ; goto yy18 ; yy55 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) { if ( yych == '.' ) goto yy60 ; goto yy18 ; } else { if ( yych <= '9' ) goto yy58 ; if ( yych != 'I' ) goto yy18 ; } yy56 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy72 ; goto yy18 ; yy57 : yych = * ++ YYCURSOR ; if ( yych == '.' ) goto yy60 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy58 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ':' ) { if ( yych <= '.' ) { if ( yych <= '-' ) goto yy18 ; goto yy70 ; } else { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy58 ; goto yy18 ; } } else { if ( yych <= 'E' ) { if ( yych <= ';' ) goto yy63 ; if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy60 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy61 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy61 ; if ( yych <= ':' ) goto yy18 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy63 : ++ YYCURSOR ; <S2SV_StartBug> # line 600 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { # if SIZEOF_LONG == 4 use_double : # endif * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_DOUBLE ( * rval , zend_strtod ( ( const char * ) start + 2 , NULL ) ) ; return 1 ; } <S2SV_StartBug> # line 1069 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy65 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy66 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; } yy66 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych == '+' ) goto yy69 ; goto yy18 ; } else { if ( yych <= '-' ) goto yy69 ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; } yy67 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; if ( yych == ';' ) goto yy63 ; goto yy18 ; yy69 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy67 ; goto yy18 ; yy70 : ++ YYCURSOR ; if ( ( YYLIMIT - YYCURSOR ) < 4 ) YYFILL ( 4 ) ; yych = * YYCURSOR ; if ( yych <= ';' ) { if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy70 ; if ( yych <= ':' ) goto yy18 ; goto yy63 ; } else { if ( yych <= 'E' ) { if ( yych <= 'D' ) goto yy18 ; goto yy65 ; } else { if ( yych == 'e' ) goto yy65 ; goto yy18 ; } } yy72 : yych = * ++ YYCURSOR ; if ( yych != 'F' ) goto yy18 ; yy73 : yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 585 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; if ( ! strncmp ( start + 2 , \"NAN\" , 3 ) ) { ZVAL_DOUBLE ( * rval , php_get_nan ( ) ) ; } else if ( ! strncmp ( start + 2 , \"INF\" , 3 ) ) { ZVAL_DOUBLE ( * rval , php_get_inf ( ) ) ; } else if ( ! strncmp ( start + 2 , \"-INF\" , 4 ) ) { ZVAL_DOUBLE ( * rval , - php_get_inf ( ) ) ; } return 1 ; } <S2SV_StartBug> # line 1143 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy76 : yych = * ++ YYCURSOR ; if ( yych == 'N' ) goto yy73 ; goto yy18 ; yy77 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy78 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; goto yy18 ; } yy78 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy79 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy79 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 558 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { # if SIZEOF_LONG == 4 int digits = YYCURSOR - start - 3 ; if ( start [ 2 ] == '-' || start [ 2 ] == '+' ) { digits -- ; } if ( digits >= MAX_LENGTH_OF_LONG - 1 ) { if ( digits == MAX_LENGTH_OF_LONG - 1 ) { int cmp = strncmp ( YYCURSOR - MAX_LENGTH_OF_LONG , long_min_digits , MAX_LENGTH_OF_LONG - 1 ) ; if ( ! ( cmp < 0 || ( cmp == 0 && start [ 2 ] == '-' ) ) ) { goto use_double ; } } else { goto use_double ; } } # endif * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_LONG ( * rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1197 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy83 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= '2' ) goto yy18 ; yych = * ++ YYCURSOR ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 551 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_BOOL ( * rval , parse_iv ( start + 2 ) ) ; return 1 ; } <S2SV_StartBug> # line 1212 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy87 : ++ YYCURSOR ; <S2SV_StartBug> # line 544 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { * p = YYCURSOR ; INIT_PZVAL ( * rval ) ; ZVAL_NULL ( * rval ) ; return 1 ; } <S2SV_StartBug> # line 1222 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy89 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy90 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; goto yy18 ; } yy90 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy91 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy91 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 521 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || var_access ( var_hash , id , & rval_ref ) != SUCCESS ) { return 0 ; } if ( * rval == * rval_ref ) return 0 ; if ( * rval != NULL ) { var_push_dtor_no_addref ( var_hash , rval ) ; } * rval = * rval_ref ; Z_ADDREF_PP ( rval ) ; Z_UNSET_ISREF_PP ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1268 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> yy95 : yych = * ++ YYCURSOR ; if ( yych <= ',' ) { if ( yych != '+' ) goto yy18 ; } else { if ( yych <= '-' ) goto yy96 ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; goto yy18 ; } yy96 : yych = * ++ YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych >= ':' ) goto yy18 ; yy97 : ++ YYCURSOR ; if ( YYLIMIT <= YYCURSOR ) YYFILL ( 1 ) ; yych = * YYCURSOR ; if ( yych <= '/' ) goto yy18 ; if ( yych <= '9' ) goto yy97 ; if ( yych != ';' ) goto yy18 ; ++ YYCURSOR ; <S2SV_StartBug> # line 500 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> { long id ; * p = YYCURSOR ; if ( ! var_hash ) return 0 ; id = parse_iv ( start + 2 ) - 1 ; if ( id == - 1 || var_access ( var_hash , id , & rval_ref ) != SUCCESS ) { return 0 ; } if ( * rval != NULL ) { var_push_dtor_no_addref ( var_hash , rval ) ; } * rval = * rval_ref ; Z_ADDREF_PP ( rval ) ; Z_SET_ISREF_PP ( rval ) ; return 1 ; } <S2SV_StartBug> # line 1312 \"ext/standard/var_unserializer.c\" <S2SV_EndBug> } <S2SV_StartBug> # line 863 \"ext/standard/var_unserializer.re\" <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # line 501 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" { YYCTYPE <S2SV_ModStart> : # line 875 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { return <S2SV_ModStart> } # line 563 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy4 : <S2SV_ModStart> ; # line 869 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { php_error_docref <S2SV_ModStart> } # line 612 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy16 : <S2SV_ModStart> ; # line 717 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> ; if ( elements < 0 ) { efree ( class_name ) ; return 0 ; } if ( <S2SV_ModStart> } # line 795 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy25 : <S2SV_ModStart> ; # line 704 \"ext/standard/var_unserializer.re\" { long elements ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> rval ) ; elements = object_common1 ( UNSERIALIZE_PASSTHRU , ZEND_STANDARD_CLASS_DEF_PTR ) ; if ( elements < 0 ) { return 0 ; } <S2SV_ModStart> ( UNSERIALIZE_PASSTHRU , elements <S2SV_ModEnd> ) ; } <S2SV_ModStart> } # line 833 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy32 : <S2SV_ModStart> ; # line 683 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 875 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy39 : <S2SV_ModStart> ; # line 648 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 931 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy46 : <S2SV_ModStart> ; # line 615 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { size_t <S2SV_ModStart> } # line 985 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy53 : <S2SV_ModStart> ; # line 605 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1083 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy65 : <S2SV_ModStart> ; # line 590 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1157 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy76 : <S2SV_ModStart> ; # line 563 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { # <S2SV_ModStart> } # line 1211 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy83 : <S2SV_ModStart> ; # line 556 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1226 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy87 : <S2SV_ModStart> ; # line 549 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { * <S2SV_ModStart> } # line 1236 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy89 : <S2SV_ModStart> ; # line 526 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 1282 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" yy95 : <S2SV_ModStart> ; # line 505 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" { long <S2SV_ModStart> } # line 1326 <S2SV_ModEnd> \"ext/standard/var_unserializer.c\" } # <S2SV_ModStart> } # line 877 <S2SV_ModEnd> \"ext/standard/var_unserializer.re\" return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11411\n\n```\nCWE-787 static void Np_toString ( js_State * J ) { <S2SV_StartBug> char buf [ 32 ] ; <S2SV_EndBug> js_Object * self = js_toobject ( J , 0 ) ; int radix = js_isundefined ( J , 1 ) ? 10 : js_tointeger ( J , 1 ) ; if ( self -> type != JS_CNUMBER ) js_typeerror ( J , \"not<S2SV_blank>a<S2SV_blank>number\" ) ; if ( radix == 10 ) { js_pushstring ( J , jsV_numbertostring ( J , buf , self -> u . number ) ) ; return ; } if ( radix < 2 || radix > 36 ) js_rangeerror ( J , \"invalid<S2SV_blank>radix\" ) ; { static const char digits [ ] = \"0123456789abcdefghijklmnopqrstuvwxyz\" ; <S2SV_StartBug> char buf [ 100 ] ; <S2SV_EndBug> double number = self -> u . number ; int sign = self -> u . number < 0 ; js_Buffer * sb = NULL ; uint64_t u , limit = ( ( uint64_t ) 1 << 52 ) ; int ndigits , exp , point ; if ( number == 0 ) { js_pushstring ( J , \"0\" ) ; return ; } if ( isnan ( number ) ) { js_pushstring ( J , \"NaN\" ) ; return ; } if ( isinf ( number ) ) { js_pushstring ( J , sign ? \"-Infinity\" : \"Infinity\" ) ; return ; } if ( sign ) number = - number ; exp = 0 ; while ( number * pow ( radix , exp ) > limit ) -- exp ; while ( number * pow ( radix , exp + 1 ) < limit ) ++ exp ; u = number * pow ( radix , exp ) + 0.5 ; while ( u > 0 && ( u % radix ) == 0 ) { u /= radix ; -- exp ; } ndigits = 0 ; while ( u > 0 ) { buf [ ndigits ++ ] = digits [ u % radix ] ; u /= radix ; } point = ndigits - exp ; if ( js_try ( J ) ) { js_free ( J , sb ) ; js_throw ( J ) ; } if ( sign ) js_putc ( J , & sb , '-' ) ; if ( point <= 0 ) { js_putc ( J , & sb , '0' ) ; js_putc ( J , & sb , '.' ) ; while ( point ++ < 0 ) js_putc ( J , & sb , '0' ) ; while ( ndigits -- > 0 ) js_putc ( J , & sb , buf [ ndigits ] ) ; } else { while ( ndigits -- > 0 ) { js_putc ( J , & sb , buf [ ndigits ] ) ; if ( -- point == 0 && ndigits > 0 ) js_putc ( J , & sb , '.' ) ; } while ( point -- > 0 ) js_putc ( J , & sb , '0' ) ; } js_putc ( J , & sb , 0 ) ; js_pushstring ( J , sb -> s ) ; js_endtry ( J ) ; js_free ( J , sb ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ 100 <S2SV_ModEnd> ] ; js_Object <S2SV_ModStart> = \"0123456789abcdefghijklmnopqrstuvwxyz\" ; <S2SV_ModEnd> double number =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4471\n\n```\nCWE-189 int lzxd_decompress ( struct lzxd_stream * lzx , off_t out_bytes ) { register unsigned int bit_buffer ; register int bits_left , i = 0 ; unsigned char * i_ptr , * i_end ; register unsigned short sym ; int match_length , length_footer , extra , verbatim_bits , bytes_todo ; int this_run , main_element , aligned_bits , j ; unsigned char * window , * runsrc , * rundest , buf [ 12 ] ; unsigned int frame_size = 0 , end_frame , match_offset , window_posn ; unsigned int R0 , R1 , R2 ; if ( ! lzx || ( out_bytes < 0 ) ) return MSPACK_ERR_ARGS ; if ( lzx -> error ) return lzx -> error ; i = lzx -> o_end - lzx -> o_ptr ; if ( ( off_t ) i > out_bytes ) i = ( int ) out_bytes ; if ( i ) { if ( lzx -> sys -> write ( lzx -> output , lzx -> o_ptr , i ) != i ) { return lzx -> error = MSPACK_ERR_WRITE ; } lzx -> o_ptr += i ; lzx -> offset += i ; out_bytes -= i ; } if ( out_bytes == 0 ) return MSPACK_ERR_OK ; RESTORE_BITS ; window = lzx -> window ; window_posn = lzx -> window_posn ; R0 = lzx -> R0 ; R1 = lzx -> R1 ; R2 = lzx -> R2 ; end_frame = ( unsigned int ) ( ( lzx -> offset + out_bytes ) / LZX_FRAME_SIZE ) + 1 ; while ( lzx -> frame < end_frame ) { if ( lzx -> reset_interval && ( ( lzx -> frame % lzx -> reset_interval ) == 0 ) ) { if ( lzx -> block_remaining ) { D ( ( \"%d<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>at<S2SV_blank>reset<S2SV_blank>interval\" , lzx -> block_remaining ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } lzxd_reset_state ( lzx ) ; R0 = lzx -> R0 ; R1 = lzx -> R1 ; R2 = lzx -> R2 ; } if ( lzx -> is_delta ) { ENSURE_BITS ( 16 ) ; REMOVE_BITS ( 16 ) ; } if ( ! lzx -> header_read ) { j = 0 ; READ_BITS ( i , 1 ) ; if ( i ) { READ_BITS ( i , 16 ) ; READ_BITS ( j , 16 ) ; } lzx -> intel_filesize = ( i << 16 ) | j ; lzx -> header_read = 1 ; } frame_size = LZX_FRAME_SIZE ; if ( lzx -> length && ( lzx -> length - lzx -> offset ) < ( off_t ) frame_size ) { frame_size = lzx -> length - lzx -> offset ; } bytes_todo = lzx -> frame_posn + frame_size - window_posn ; while ( bytes_todo > 0 ) { if ( lzx -> block_remaining == 0 ) { if ( ( lzx -> block_type == LZX_BLOCKTYPE_UNCOMPRESSED ) && ( lzx -> block_length & 1 ) ) { READ_IF_NEEDED ; i_ptr ++ ; } READ_BITS ( lzx -> block_type , 3 ) ; READ_BITS ( i , 16 ) ; READ_BITS ( j , 8 ) ; lzx -> block_remaining = lzx -> block_length = ( i << 8 ) | j ; switch ( lzx -> block_type ) { case LZX_BLOCKTYPE_ALIGNED : for ( i = 0 ; i < 8 ; i ++ ) { READ_BITS ( j , 3 ) ; lzx -> ALIGNED_len [ i ] = j ; } BUILD_TABLE ( ALIGNED ) ; case LZX_BLOCKTYPE_VERBATIM : READ_LENGTHS ( MAINTREE , 0 , 256 ) ; READ_LENGTHS ( MAINTREE , 256 , LZX_NUM_CHARS + lzx -> num_offsets ) ; BUILD_TABLE ( MAINTREE ) ; if ( lzx -> MAINTREE_len [ 0xE8 ] != 0 ) lzx -> intel_started = 1 ; READ_LENGTHS ( LENGTH , 0 , LZX_NUM_SECONDARY_LENGTHS ) ; BUILD_TABLE_MAYBE_EMPTY ( LENGTH ) ; break ; case LZX_BLOCKTYPE_UNCOMPRESSED : lzx -> intel_started = 1 ; <S2SV_StartBug> ENSURE_BITS ( 16 ) ; <S2SV_EndBug> if ( bits_left > 16 ) i_ptr -= 2 ; bits_left = 0 ; bit_buffer = 0 ; for ( rundest = & buf [ 0 ] , i = 0 ; i < 12 ; i ++ ) { READ_IF_NEEDED ; * rundest ++ = * i_ptr ++ ; } R0 = buf [ 0 ] | ( buf [ 1 ] << 8 ) | ( buf [ 2 ] << 16 ) | ( buf [ 3 ] << 24 ) ; R1 = buf [ 4 ] | ( buf [ 5 ] << 8 ) | ( buf [ 6 ] << 16 ) | ( buf [ 7 ] << 24 ) ; R2 = buf [ 8 ] | ( buf [ 9 ] << 8 ) | ( buf [ 10 ] << 16 ) | ( buf [ 11 ] << 24 ) ; break ; default : D ( ( \"bad<S2SV_blank>block<S2SV_blank>type\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } } this_run = lzx -> block_remaining ; if ( this_run > bytes_todo ) this_run = bytes_todo ; bytes_todo -= this_run ; lzx -> block_remaining -= this_run ; switch ( lzx -> block_type ) { case LZX_BLOCKTYPE_VERBATIM : while ( this_run > 0 ) { READ_HUFFSYM ( MAINTREE , main_element ) ; if ( main_element < LZX_NUM_CHARS ) { window [ window_posn ++ ] = main_element ; this_run -- ; } else { main_element -= LZX_NUM_CHARS ; match_length = main_element & LZX_NUM_PRIMARY_LENGTHS ; if ( match_length == LZX_NUM_PRIMARY_LENGTHS ) { if ( lzx -> LENGTH_empty ) { D ( ( \"LENGTH<S2SV_blank>symbol<S2SV_blank>needed<S2SV_blank>but<S2SV_blank>tree<S2SV_blank>is<S2SV_blank>empty\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } READ_HUFFSYM ( LENGTH , length_footer ) ; match_length += length_footer ; } match_length += LZX_MIN_MATCH ; switch ( ( match_offset = ( main_element >> 3 ) ) ) { case 0 : match_offset = R0 ; break ; case 1 : match_offset = R1 ; R1 = R0 ; R0 = match_offset ; break ; case 2 : match_offset = R2 ; R2 = R0 ; R0 = match_offset ; break ; case 3 : match_offset = 1 ; R2 = R1 ; R1 = R0 ; R0 = match_offset ; break ; default : extra = ( match_offset >= 36 ) ? 17 : extra_bits [ match_offset ] ; READ_BITS ( verbatim_bits , extra ) ; match_offset = position_base [ match_offset ] - 2 + verbatim_bits ; R2 = R1 ; R1 = R0 ; R0 = match_offset ; } if ( match_length == LZX_MAX_MATCH && lzx -> is_delta ) { int extra_len = 0 ; ENSURE_BITS ( 3 ) ; if ( PEEK_BITS ( 1 ) == 0 ) { REMOVE_BITS ( 1 ) ; READ_BITS ( extra_len , 8 ) ; } else if ( PEEK_BITS ( 2 ) == 2 ) { REMOVE_BITS ( 2 ) ; READ_BITS ( extra_len , 10 ) ; extra_len += 0x100 ; } else if ( PEEK_BITS ( 3 ) == 6 ) { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 12 ) ; extra_len += 0x500 ; } else { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 15 ) ; } match_length += extra_len ; } if ( ( window_posn + match_length ) > lzx -> window_size ) { D ( ( \"match<S2SV_blank>ran<S2SV_blank>over<S2SV_blank>window<S2SV_blank>wrap\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } rundest = & window [ window_posn ] ; i = match_length ; if ( match_offset > window_posn ) { if ( match_offset > lzx -> offset && ( match_offset - window_posn ) > lzx -> ref_data_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>LZX<S2SV_blank>stream\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } j = match_offset - window_posn ; if ( j > ( int ) lzx -> window_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>window<S2SV_blank>boundaries\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } runsrc = & window [ lzx -> window_size - j ] ; if ( j < i ) { i -= j ; while ( j -- > 0 ) * rundest ++ = * runsrc ++ ; runsrc = window ; } while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } else { runsrc = rundest - match_offset ; while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } this_run -= match_length ; window_posn += match_length ; } } break ; case LZX_BLOCKTYPE_ALIGNED : while ( this_run > 0 ) { READ_HUFFSYM ( MAINTREE , main_element ) ; if ( main_element < LZX_NUM_CHARS ) { window [ window_posn ++ ] = main_element ; this_run -- ; } else { main_element -= LZX_NUM_CHARS ; match_length = main_element & LZX_NUM_PRIMARY_LENGTHS ; if ( match_length == LZX_NUM_PRIMARY_LENGTHS ) { if ( lzx -> LENGTH_empty ) { D ( ( \"LENGTH<S2SV_blank>symbol<S2SV_blank>needed<S2SV_blank>but<S2SV_blank>tree<S2SV_blank>is<S2SV_blank>empty\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } READ_HUFFSYM ( LENGTH , length_footer ) ; match_length += length_footer ; } match_length += LZX_MIN_MATCH ; switch ( ( match_offset = ( main_element >> 3 ) ) ) { case 0 : match_offset = R0 ; break ; case 1 : match_offset = R1 ; R1 = R0 ; R0 = match_offset ; break ; case 2 : match_offset = R2 ; R2 = R0 ; R0 = match_offset ; break ; default : extra = ( match_offset >= 36 ) ? 17 : extra_bits [ match_offset ] ; match_offset = position_base [ match_offset ] - 2 ; if ( extra > 3 ) { extra -= 3 ; READ_BITS ( verbatim_bits , extra ) ; match_offset += ( verbatim_bits << 3 ) ; READ_HUFFSYM ( ALIGNED , aligned_bits ) ; match_offset += aligned_bits ; } else if ( extra == 3 ) { READ_HUFFSYM ( ALIGNED , aligned_bits ) ; match_offset += aligned_bits ; } else if ( extra > 0 ) { READ_BITS ( verbatim_bits , extra ) ; match_offset += verbatim_bits ; } else { match_offset = 1 ; } R2 = R1 ; R1 = R0 ; R0 = match_offset ; } if ( match_length == LZX_MAX_MATCH && lzx -> is_delta ) { int extra_len = 0 ; ENSURE_BITS ( 3 ) ; if ( PEEK_BITS ( 1 ) == 0 ) { REMOVE_BITS ( 1 ) ; READ_BITS ( extra_len , 8 ) ; } else if ( PEEK_BITS ( 2 ) == 2 ) { REMOVE_BITS ( 2 ) ; READ_BITS ( extra_len , 10 ) ; extra_len += 0x100 ; } else if ( PEEK_BITS ( 3 ) == 6 ) { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 12 ) ; extra_len += 0x500 ; } else { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 15 ) ; } match_length += extra_len ; } if ( ( window_posn + match_length ) > lzx -> window_size ) { D ( ( \"match<S2SV_blank>ran<S2SV_blank>over<S2SV_blank>window<S2SV_blank>wrap\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } rundest = & window [ window_posn ] ; i = match_length ; if ( match_offset > window_posn ) { if ( match_offset > lzx -> offset && ( match_offset - window_posn ) > lzx -> ref_data_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>LZX<S2SV_blank>stream\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } j = match_offset - window_posn ; if ( j > ( int ) lzx -> window_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>window<S2SV_blank>boundaries\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } runsrc = & window [ lzx -> window_size - j ] ; if ( j < i ) { i -= j ; while ( j -- > 0 ) * rundest ++ = * runsrc ++ ; runsrc = window ; } while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } else { runsrc = rundest - match_offset ; while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } this_run -= match_length ; window_posn += match_length ; } } break ; case LZX_BLOCKTYPE_UNCOMPRESSED : rundest = & window [ window_posn ] ; window_posn += this_run ; while ( this_run > 0 ) { if ( ( i = i_end - i_ptr ) == 0 ) { READ_IF_NEEDED ; } else { if ( i > this_run ) i = this_run ; lzx -> sys -> copy ( i_ptr , rundest , ( size_t ) i ) ; rundest += i ; i_ptr += i ; this_run -= i ; } } break ; default : return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( this_run < 0 ) { if ( ( unsigned int ) ( - this_run ) > lzx -> block_remaining ) { D ( ( \"overrun<S2SV_blank>went<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>block<S2SV_blank>by<S2SV_blank>%d<S2SV_blank>(%d<S2SV_blank>remaining)\" , - this_run , lzx -> block_remaining ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } lzx -> block_remaining -= - this_run ; } } if ( ( window_posn - lzx -> frame_posn ) != frame_size ) { D ( ( \"decode<S2SV_blank>beyond<S2SV_blank>output<S2SV_blank>frame<S2SV_blank>limits!<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>%d\" , window_posn - lzx -> frame_posn , frame_size ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( bits_left > 0 ) ENSURE_BITS ( 16 ) ; if ( bits_left & 15 ) REMOVE_BITS ( bits_left & 15 ) ; if ( lzx -> o_ptr != lzx -> o_end ) { D ( ( \"%ld<S2SV_blank>avail<S2SV_blank>bytes,<S2SV_blank>new<S2SV_blank>%d<S2SV_blank>frame\" , ( long ) ( lzx -> o_end - lzx -> o_ptr ) , frame_size ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( lzx -> intel_started && lzx -> intel_filesize && ( lzx -> frame <= 32768 ) && ( frame_size > 10 ) ) { unsigned char * data = & lzx -> e8_buf [ 0 ] ; unsigned char * dataend = & lzx -> e8_buf [ frame_size - 10 ] ; signed int curpos = lzx -> intel_curpos ; signed int filesize = lzx -> intel_filesize ; signed int abs_off , rel_off ; lzx -> o_ptr = data ; lzx -> sys -> copy ( & lzx -> window [ lzx -> frame_posn ] , data , frame_size ) ; while ( data < dataend ) { if ( * data ++ != 0xE8 ) { curpos ++ ; continue ; } abs_off = data [ 0 ] | ( data [ 1 ] << 8 ) | ( data [ 2 ] << 16 ) | ( data [ 3 ] << 24 ) ; if ( ( abs_off >= - curpos ) && ( abs_off < filesize ) ) { rel_off = ( abs_off >= 0 ) ? abs_off - curpos : abs_off + filesize ; data [ 0 ] = ( unsigned char ) rel_off ; data [ 1 ] = ( unsigned char ) ( rel_off >> 8 ) ; data [ 2 ] = ( unsigned char ) ( rel_off >> 16 ) ; data [ 3 ] = ( unsigned char ) ( rel_off >> 24 ) ; } data += 4 ; curpos += 5 ; } lzx -> intel_curpos += frame_size ; } else { lzx -> o_ptr = & lzx -> window [ lzx -> frame_posn ] ; if ( lzx -> intel_filesize ) lzx -> intel_curpos += frame_size ; } lzx -> o_end = & lzx -> o_ptr [ frame_size ] ; i = ( out_bytes < ( off_t ) frame_size ) ? ( unsigned int ) out_bytes : frame_size ; if ( lzx -> sys -> write ( lzx -> output , lzx -> o_ptr , i ) != i ) { return lzx -> error = MSPACK_ERR_WRITE ; } lzx -> o_ptr += i ; lzx -> offset += i ; out_bytes -= i ; lzx -> frame_posn += frame_size ; lzx -> frame ++ ; if ( window_posn == lzx -> window_size ) window_posn = 0 ; if ( lzx -> frame_posn == lzx -> window_size ) lzx -> frame_posn = 0 ; } if ( out_bytes ) { D ( ( \"bytes<S2SV_blank>left<S2SV_blank>to<S2SV_blank>output\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } STORE_BITS ; lzx -> window_posn = window_posn ; lzx -> R0 = R0 ; lzx -> R1 = R1 ; lzx -> R2 = R2 ; return MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 1 ; if ( bits_left == 0 ) <S2SV_ModStart> ( 16 ) <S2SV_ModEnd> ; bits_left =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t httpCheckCharset ( const char_t * s , size_t length , uint_t charset ) { error_t error ; size_t i ; uint8_t c ; uint_t m ; error = NO_ERROR ; for ( i = 0 ; i < length ; i ++ ) { c = ( uint8_t ) s [ i ] ; m = HTTP_CHARSET_OCTET ; if ( iscntrl ( c ) ) m |= HTTP_CHARSET_CTL ; if ( isprint ( c ) && c <= 126 ) m |= HTTP_CHARSET_TEXT | HTTP_CHARSET_VCHAR ; if ( c == '<S2SV_blank>' || c == '\\\\t' ) m |= HTTP_CHARSET_TEXT | HTTP_CHARSET_LWS ; if ( isalpha ( c ) ) m |= HTTP_CHARSET_TCHAR | HTTP_CHARSET_ALPHA ; if ( osIsdigit ( c ) ) m |= HTTP_CHARSET_TCHAR | HTTP_CHARSET_DIGIT ; if ( isxdigit ( c ) ) m |= HTTP_CHARSET_HEX ; if ( c >= 128 ) m |= HTTP_CHARSET_TEXT | HTTP_CHARSET_OBS_TEXT ; <S2SV_StartBug> if ( strchr ( \"!#$%&\\'*+-.^_`|~\" , c ) ) <S2SV_EndBug> m |= HTTP_CHARSET_TCHAR ; if ( ( m & charset ) == 0 ) error = ERROR_INVALID_SYNTAX ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( osStrchr <S2SV_ModEnd> ( \"!#$%&\\'*+-.^_`|~\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18257\n\n```\nCWE-190 static int __get_data_block ( struct inode * inode , sector_t iblock , struct buffer_head * bh , int create , int flag , pgoff_t * next_pgofs ) { struct f2fs_map_blocks map ; int err ; map . m_lblk = iblock ; map . m_len = bh -> b_size >> inode -> i_blkbits ; map . m_next_pgofs = next_pgofs ; err = f2fs_map_blocks ( inode , & map , create , flag ) ; if ( ! err ) { map_bh ( bh , inode -> i_sb , map . m_pblk ) ; bh -> b_state = ( bh -> b_state & ~ F2FS_MAP_FLAGS ) | map . m_flags ; <S2SV_StartBug> bh -> b_size = map . m_len << inode -> i_blkbits ; <S2SV_EndBug> } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> b_size = ( u64 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5356\n\n```\nCWE-119 static gboolean cosine_read ( wtap * wth , int * err , gchar * * err_info , gint64 * data_offset ) { <S2SV_StartBug> gint64 offset ; <S2SV_EndBug> int pkt_len ; char line [ COSINE_LINE_LENGTH ] ; offset = cosine_seek_next_packet ( wth , err , err_info , line ) ; if ( offset < 0 ) return FALSE ; * data_offset = offset ; <S2SV_StartBug> pkt_len = parse_cosine_rec_hdr ( & wth -> phdr , line , err , err_info ) ; <S2SV_EndBug> if ( pkt_len == - 1 ) return FALSE ; <S2SV_StartBug> return parse_cosine_hex_dump ( wth -> fh , & wth -> phdr , pkt_len , <S2SV_EndBug> <S2SV_StartBug> wth -> frame_buffer , err , err_info ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { gint64 offset <S2SV_ModEnd> ; char line <S2SV_ModStart> = offset ; return parse_cosine_packet <S2SV_ModEnd> ( wth -> <S2SV_ModStart> -> phdr , <S2SV_ModEnd> wth -> frame_buffer <S2SV_ModStart> wth -> frame_buffer , line\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15088\n\n```\nCWE-119 static krb5_error_code get_matching_data ( krb5_context context , pkinit_plg_crypto_context plg_cryptoctx , pkinit_req_crypto_context req_cryptoctx , X509 * cert , pkinit_cert_matching_data * * md_out ) { krb5_error_code ret = ENOMEM ; pkinit_cert_matching_data * md = NULL ; krb5_principal * pkinit_sans = NULL , * upn_sans = NULL ; size_t i , j ; <S2SV_StartBug> char buf [ DN_BUF_LEN ] ; <S2SV_EndBug> unsigned int bufsize = sizeof ( buf ) ; * md_out = NULL ; md = calloc ( 1 , sizeof ( * md ) ) ; if ( md == NULL ) goto cleanup ; <S2SV_StartBug> X509_NAME_oneline_ex ( X509_get_subject_name ( cert ) , buf , & bufsize , <S2SV_EndBug> XN_FLAG_SEP_COMMA_PLUS ) ; <S2SV_StartBug> md -> subject_dn = strdup ( buf ) ; <S2SV_EndBug> if ( md -> subject_dn == NULL ) { ret = ENOMEM ; goto cleanup ; } <S2SV_StartBug> X509_NAME_oneline_ex ( X509_get_issuer_name ( cert ) , buf , & bufsize , <S2SV_EndBug> XN_FLAG_SEP_COMMA_PLUS ) ; <S2SV_StartBug> md -> issuer_dn = strdup ( buf ) ; <S2SV_EndBug> if ( md -> issuer_dn == NULL ) { ret = ENOMEM ; goto cleanup ; } ret = crypto_retrieve_X509_sans ( context , plg_cryptoctx , req_cryptoctx , cert , & pkinit_sans , & upn_sans , NULL ) ; if ( ret ) goto cleanup ; j = 0 ; if ( pkinit_sans != NULL ) { for ( i = 0 ; pkinit_sans [ i ] != NULL ; i ++ ) j ++ ; } if ( upn_sans != NULL ) { for ( i = 0 ; upn_sans [ i ] != NULL ; i ++ ) j ++ ; } if ( j != 0 ) { md -> sans = calloc ( ( size_t ) j + 1 , sizeof ( * md -> sans ) ) ; if ( md -> sans == NULL ) { ret = ENOMEM ; goto cleanup ; } j = 0 ; if ( pkinit_sans != NULL ) { for ( i = 0 ; pkinit_sans [ i ] != NULL ; i ++ ) md -> sans [ j ++ ] = pkinit_sans [ i ] ; free ( pkinit_sans ) ; } if ( upn_sans != NULL ) { for ( i = 0 ; upn_sans [ i ] != NULL ; i ++ ) md -> sans [ j ++ ] = upn_sans [ i ] ; free ( upn_sans ) ; } md -> sans [ j ] = NULL ; } else md -> sans = NULL ; ret = crypto_retrieve_X509_key_usage ( context , plg_cryptoctx , req_cryptoctx , cert , & md -> ku_bits , & md -> eku_bits ) ; if ( ret ) goto cleanup ; * md_out = md ; md = NULL ; cleanup : crypto_cert_free_matching_data ( context , md ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , j ; * md_out = NULL ; md = calloc ( 1 , sizeof ( <S2SV_ModEnd> * md ) <S2SV_ModStart> goto cleanup ; ret = rfc2253_name <S2SV_ModEnd> ( X509_get_subject_name ( <S2SV_ModStart> cert ) , & <S2SV_ModEnd> md -> subject_dn <S2SV_ModStart> md -> subject_dn ) ; if ( ret ) goto cleanup ; ret = rfc2253_name <S2SV_ModEnd> ( X509_get_issuer_name ( <S2SV_ModStart> cert ) , & <S2SV_ModEnd> md -> issuer_dn <S2SV_ModStart> md -> issuer_dn ) ; if ( ret ) goto cleanup ; <S2SV_ModEnd> ret = crypto_retrieve_X509_sans\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12459\n\n```\nCWE-20 int ff_mpeg4_decode_picture_header ( Mpeg4DecContext * ctx , GetBitContext * gb ) { MpegEncContext * s = & ctx -> m ; unsigned startcode , v ; int ret ; int vol = 0 ; <S2SV_StartBug> align_get_bits ( gb ) ; <S2SV_EndBug> if ( s -> codec_tag == AV_RL32 ( \"WV1F\" ) && show_bits ( gb , 24 ) == 0x575630 ) { skip_bits ( gb , 24 ) ; if ( get_bits ( gb , 8 ) == 0xF0 ) goto end ; } startcode = 0xff ; for ( ; ; ) { if ( get_bits_count ( gb ) >= gb -> size_in_bits ) { if ( gb -> size_in_bits == 8 && ( ctx -> divx_version >= 0 || ctx -> xvid_build >= 0 ) || s -> codec_tag == AV_RL32 ( \"QMP4\" ) ) { av_log ( s -> avctx , AV_LOG_VERBOSE , \"frame<S2SV_blank>skip<S2SV_blank>%d\\\\n\" , gb -> size_in_bits ) ; return FRAME_SKIPPED ; } else return AVERROR_INVALIDDATA ; } v = get_bits ( gb , 8 ) ; startcode = ( ( startcode << 8 ) | v ) & 0xffffffff ; if ( ( startcode & 0xFFFFFF00 ) != 0x100 ) continue ; if ( s -> avctx -> debug & FF_DEBUG_STARTCODE ) { av_log ( s -> avctx , AV_LOG_DEBUG , \"startcode:<S2SV_blank>%3X<S2SV_blank>\" , startcode ) ; if ( startcode <= 0x11F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode <= 0x12F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Layer<S2SV_blank>Start\" ) ; else if ( startcode <= 0x13F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode <= 0x15F ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FGS<S2SV_blank>bp<S2SV_blank>start\" ) ; else if ( startcode <= 0x1AF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Reserved\" ) ; else if ( startcode == 0x1B0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Seq<S2SV_blank>End\" ) ; else if ( startcode == 0x1B2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"User<S2SV_blank>Data\" ) ; else if ( startcode == 0x1B3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Group<S2SV_blank>of<S2SV_blank>VOP<S2SV_blank>start\" ) ; else if ( startcode == 0x1B4 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Session<S2SV_blank>Error\" ) ; else if ( startcode == 0x1B5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Visual<S2SV_blank>Object<S2SV_blank>Start\" ) ; else if ( startcode == 0x1B6 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Video<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1B7 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"slice<S2SV_blank>start\" ) ; else if ( startcode == 0x1B8 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"extension<S2SV_blank>start\" ) ; else if ( startcode == 0x1B9 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"fgs<S2SV_blank>start\" ) ; else if ( startcode == 0x1BA ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BB ) av_log ( s -> avctx , AV_LOG_DEBUG , \"FBA<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BC ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BD ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Mesh<S2SV_blank>Object<S2SV_blank>Plane<S2SV_blank>start\" ) ; else if ( startcode == 0x1BE ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Still<S2SV_blank>Texture<S2SV_blank>Object<S2SV_blank>start\" ) ; else if ( startcode == 0x1BF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Spatial<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C0 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>SNR<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C1 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Tile<S2SV_blank>start\" ) ; else if ( startcode == 0x1C2 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"Texture<S2SV_blank>Shape<S2SV_blank>Layer<S2SV_blank>start\" ) ; else if ( startcode == 0x1C3 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"stuffing<S2SV_blank>start\" ) ; else if ( startcode <= 0x1C5 ) av_log ( s -> avctx , AV_LOG_DEBUG , \"reserved\" ) ; else if ( startcode <= 0x1FF ) av_log ( s -> avctx , AV_LOG_DEBUG , \"System<S2SV_blank>start\" ) ; av_log ( s -> avctx , AV_LOG_DEBUG , \"<S2SV_blank>at<S2SV_blank>%d\\\\n\" , get_bits_count ( gb ) ) ; } if ( startcode >= 0x120 && startcode <= 0x12F ) { if ( vol ) { av_log ( s -> avctx , AV_LOG_WARNING , \"Ignoring<S2SV_blank>multiple<S2SV_blank>VOL<S2SV_blank>headers\\\\n\" ) ; continue ; } vol ++ ; if ( ( ret = decode_vol_header ( ctx , gb ) ) < 0 ) return ret ; } else if ( startcode == USER_DATA_STARTCODE ) { decode_user_data ( ctx , gb ) ; } else if ( startcode == GOP_STARTCODE ) { mpeg4_decode_gop_header ( s , gb ) ; } else if ( startcode == VOS_STARTCODE ) { mpeg4_decode_profile_level ( s , gb ) ; if ( s -> avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO && ( s -> avctx -> level > 0 && s -> avctx -> level < 9 ) ) { s -> studio_profile = 1 ; next_start_code_studio ( gb ) ; extension_and_user_data ( s , gb , 0 ) ; } } else if ( startcode == VISUAL_OBJ_STARTCODE ) { if ( s -> studio_profile ) { if ( ( ret = decode_studiovisualobject ( ctx , gb ) ) < 0 ) return ret ; } else mpeg4_decode_visual_object ( s , gb ) ; } else if ( startcode == VOP_STARTCODE ) { break ; } align_get_bits ( gb ) ; startcode = 0xff ; } end : if ( s -> avctx -> flags & AV_CODEC_FLAG_LOW_DELAY ) s -> low_delay = 1 ; s -> avctx -> has_b_frames = ! s -> low_delay ; if ( s -> studio_profile ) { if ( ! s -> avctx -> bits_per_raw_sample ) { av_log ( s -> avctx , AV_LOG_ERROR , \"Missing<S2SV_blank>VOL<S2SV_blank>header\\\\n\" ) ; return AVERROR_INVALIDDATA ; } return decode_studio_vop_header ( ctx , gb ) ; } else return decode_vop_header ( ctx , gb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( gb ) ; if ( ! s -> studio_profile && s -> avctx -> bits_per_raw_sample != 8 ) s -> avctx -> bits_per_raw_sample = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3951\n\n```\nCWE-000 static int cdc_ncm_bind ( struct usbnet * dev , struct usb_interface * intf ) { <S2SV_StartBug> int ret ; <S2SV_EndBug> if ( cdc_ncm_select_altsetting ( intf ) != CDC_NCM_COMM_ALTSETTING_NCM ) return - ENODEV ; <S2SV_StartBug> ret = cdc_ncm_bind_common ( dev , intf , CDC_NCM_DATA_ALTSETTING_NCM , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> usbnet_link_change ( dev , 0 , 0 ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> intf ) { <S2SV_ModEnd> if ( cdc_ncm_select_altsetting <S2SV_ModStart> - ENODEV ; return <S2SV_ModEnd> cdc_ncm_bind_common ( dev <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16805\n\n```\nCWE-125 static const ut8 * r_bin_dwarf_parse_comp_unit ( Sdb * s , const ut8 * obuf , RBinDwarfCompUnit * cu , const RBinDwarfDebugAbbrev * da , size_t offset , const ut8 * debug_str , size_t debug_str_len ) { const ut8 * buf = obuf , * buf_end = obuf + ( cu -> hdr . length - 7 ) ; ut64 abbr_code ; size_t i ; if ( cu -> hdr . length > debug_str_len ) { return NULL ; } while ( buf && buf < buf_end && buf >= obuf ) { if ( cu -> length && cu -> capacity == cu -> length ) { r_bin_dwarf_expand_cu ( cu ) ; } buf = r_uleb128 ( buf , buf_end - buf , & abbr_code ) ; if ( abbr_code > da -> length || ! buf ) { return NULL ; } r_bin_dwarf_init_die ( & cu -> dies [ cu -> length ] ) ; if ( ! abbr_code ) { cu -> dies [ cu -> length ] . abbrev_code = 0 ; cu -> length ++ ; buf ++ ; continue ; } cu -> dies [ cu -> length ] . abbrev_code = abbr_code ; cu -> dies [ cu -> length ] . tag = da -> decls [ abbr_code - 1 ] . tag ; abbr_code += offset ; if ( da -> capacity < abbr_code ) { return NULL ; } for ( i = 0 ; i < da -> decls [ abbr_code - 1 ] . length ; i ++ ) { if ( cu -> dies [ cu -> length ] . length == cu -> dies [ cu -> length ] . capacity ) { r_bin_dwarf_expand_die ( & cu -> dies [ cu -> length ] ) ; } if ( i >= cu -> dies [ cu -> length ] . capacity || i >= da -> decls [ abbr_code - 1 ] . capacity ) { eprintf ( \"Warning:<S2SV_blank>malformed<S2SV_blank>dwarf<S2SV_blank>attribute<S2SV_blank>capacity<S2SV_blank>doesn\\'t<S2SV_blank>match<S2SV_blank>length\\\\n\" ) ; break ; } memset ( & cu -> dies [ cu -> length ] . attr_values [ i ] , 0 , sizeof ( cu -> dies [ cu -> length ] . attr_values [ i ] ) ) ; buf = r_bin_dwarf_parse_attr_value ( buf , buf_end - buf , & da -> decls [ abbr_code - 1 ] . specs [ i ] , & cu -> dies [ cu -> length ] . attr_values [ i ] , & cu -> hdr , debug_str , debug_str_len ) ; if ( cu -> dies [ cu -> length ] . attr_values [ i ] . name == DW_AT_comp_dir ) { const char * name = cu -> dies [ cu -> length ] . attr_values [ i ] . encoding . str_struct . string ; sdb_set ( s , \"DW_AT_comp_dir\" , name , 0 ) ; } cu -> dies [ cu -> length ] . length ++ ; } cu -> length ++ ; } return buf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_calc_ss_err ( YV12_BUFFER_CONFIG * source , YV12_BUFFER_CONFIG * dest ) { int i , j ; int Total = 0 ; unsigned char * src = source -> y_buffer ; unsigned char * dst = dest -> y_buffer ; for ( i = 0 ; i < source -> y_height ; i += 16 ) { for ( j = 0 ; j < source -> y_width ; j += 16 ) { unsigned int sse ; <S2SV_StartBug> Total += vp8_mse16x16 ( src + j , source -> y_stride , dst + j , dest -> y_stride , & sse ) ; <S2SV_EndBug> } src += 16 * source -> y_stride ; dst += 16 * dest -> y_stride ; } return Total ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; Total += vpx_mse16x16 <S2SV_ModEnd> ( src +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15785\n\n```\nCWE-119 static int sd_e_h ( GWindow gw , GEvent * event ) { struct sd_data * sd = GDrawGetUserData ( gw ) ; if ( sd == NULL ) return ( true ) ; if ( event -> type == et_close ) { SD_DoCancel ( sd ) ; <S2SV_StartBug> } else if ( event -> type == et_char ) { <S2SV_EndBug> if ( event -> u . chr . keysym == GK_F1 || event -> u . chr . keysym == GK_Help ) { help ( \"scripting.html\" ) ; return ( true ) ; } return ( false ) ; } else if ( event -> type == et_map ) GDrawRaise ( gw ) ; else if ( event -> type == et_resize ) GDrawRequestExpose ( gw , NULL , false ) ; return ( true ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> type == et_controlevent && event -> u . control . subtype == et_textchanged ) { sd -> fv -> script_unsaved = ! GTextFieldIsEmpty ( GWidgetGetControl ( sd -> gw , CID_Script ) ) ; } else if ( event -> type == et_controlevent && event -> u . control . subtype == et_save ) { sd -> fv -> script_unsaved = false ; } else if ( event -> type ==\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0542\n\n```\nCWE-119 WORD32 ih264d_video_decode ( iv_obj_t * dec_hdl , void * pv_api_ip , void * pv_api_op ) { dec_struct_t * ps_dec = ( dec_struct_t * ) ( dec_hdl -> pv_codec_handle ) ; WORD32 i4_err_status = 0 ; UWORD8 * pu1_buf = NULL ; WORD32 buflen ; UWORD32 u4_max_ofst , u4_length_of_start_code = 0 ; UWORD32 bytes_consumed = 0 ; UWORD32 cur_slice_is_nonref = 0 ; UWORD32 u4_next_is_aud ; UWORD32 u4_first_start_code_found = 0 ; WORD32 ret = 0 , api_ret_value = IV_SUCCESS ; WORD32 header_data_left = 0 , frame_data_left = 0 ; UWORD8 * pu1_bitstrm_buf ; ivd_video_decode_ip_t * ps_dec_ip ; ivd_video_decode_op_t * ps_dec_op ; ithread_set_name ( ( void * ) \"Parse_thread\" ) ; ps_dec_ip = ( ivd_video_decode_ip_t * ) pv_api_ip ; ps_dec_op = ( ivd_video_decode_op_t * ) pv_api_op ; { UWORD32 u4_size ; u4_size = ps_dec_op -> u4_size ; memset ( ps_dec_op , 0 , sizeof ( ivd_video_decode_op_t ) ) ; ps_dec_op -> u4_size = u4_size ; } ps_dec -> pv_dec_out = ps_dec_op ; if ( ps_dec -> init_done != 1 ) { return IV_FAIL ; } DATA_SYNC ( ) ; if ( 0 == ps_dec -> u1_flushfrm ) { if ( ps_dec_ip -> pv_stream_buffer == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_FRM_BS_BUF_NULL ; return IV_FAIL ; } if ( ps_dec_ip -> u4_num_Bytes <= 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DEC_NUMBYTES_INV ; return IV_FAIL ; } } ps_dec -> u1_pic_decode_done = 0 ; ps_dec_op -> u4_num_bytes_consumed = 0 ; ps_dec -> ps_out_buffer = NULL ; if ( ps_dec_ip -> u4_size >= offsetof ( ivd_video_decode_ip_t , s_out_buffer ) ) ps_dec -> ps_out_buffer = & ps_dec_ip -> s_out_buffer ; ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 0 ; ps_dec -> s_disp_op . u4_error_code = 1 ; ps_dec -> u4_fmt_conv_num_rows = FMT_CONV_NUM_ROWS ; if ( 0 == ps_dec -> u4_share_disp_buf && ps_dec -> i4_decode_header == 0 ) { UWORD32 i ; if ( ps_dec -> ps_out_buffer -> u4_num_bufs == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUFS ; return IV_FAIL ; } for ( i = 0 ; i < ps_dec -> ps_out_buffer -> u4_num_bufs ; i ++ ) { if ( ps_dec -> ps_out_buffer -> pu1_bufs [ i ] == NULL ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_OP_BUF_NULL ; return IV_FAIL ; } if ( ps_dec -> ps_out_buffer -> u4_min_out_buf_size [ i ] == 0 ) { ps_dec_op -> u4_error_code |= 1 << IVD_UNSUPPORTEDPARAM ; ps_dec_op -> u4_error_code |= IVD_DISP_FRM_ZERO_OP_BUF_SIZE ; return IV_FAIL ; } } } if ( ps_dec -> u4_total_frames_decoded >= NUM_FRAMES_LIMIT ) { ps_dec_op -> u4_error_code = ERROR_FRAME_LIMIT_OVER ; return IV_FAIL ; } ps_dec -> u4_ts = ps_dec_ip -> u4_ts ; ps_dec_op -> u4_error_code = 0 ; ps_dec_op -> e_pic_type = - 1 ; ps_dec_op -> u4_output_present = 0 ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec -> i4_frametype = - 1 ; ps_dec -> i4_content_type = - 1 ; { if ( ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) == ps_dec -> u1_top_bottom_decoded ) { ps_dec -> u1_top_bottom_decoded = 0 ; } } ps_dec -> u4_slice_start_code_found = 0 ; if ( ps_dec -> u1_init_dec_flag == 1 && ps_dec -> u4_share_disp_buf == 1 && ps_dec -> u1_flushfrm == 0 ) { UWORD32 i ; WORD32 disp_avail = 0 , free_id ; for ( i = 0 ; i < ps_dec -> u1_pic_bufs ; i ++ ) { if ( 0 == ps_dec -> u4_disp_buf_mapping [ i ] || 1 == ps_dec -> u4_disp_buf_to_be_freed [ i ] ) { disp_avail = 1 ; break ; } } if ( 0 == disp_avail ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } while ( 1 ) { pic_buffer_t * ps_pic_buf ; ps_pic_buf = ( pic_buffer_t * ) ih264_buf_mgr_get_next_free ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , & free_id ) ; if ( ps_pic_buf == NULL ) { UWORD32 i , display_queued = 0 ; for ( i = 0 ; i < ( MAX_DISP_BUFS_NEW ) ; i ++ ) { if ( 0 != ps_dec -> u4_disp_buf_mapping [ i ] ) { display_queued = 1 ; break ; } } if ( 1 == display_queued ) { ps_dec_op -> u4_error_code = IVD_DEC_REF_BUF_NULL ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; return ( IV_FAIL ) ; } } else { if ( 1 == ps_dec -> u4_disp_buf_mapping [ free_id ] ) { ih264_buf_mgr_set_status ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; } else { ih264_buf_mgr_release ( ( buf_mgr_t * ) ps_dec -> pv_pic_buf_mgr , free_id , BUF_MGR_IO ) ; break ; } } } } if ( ps_dec -> u1_flushfrm && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; ps_dec -> u4_output_present = 1 ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; ps_dec_op -> u4_new_seq = 0 ; ps_dec_op -> u4_output_present = ps_dec -> u4_output_present ; ps_dec_op -> u4_progressive_frame_flag = ps_dec -> s_disp_op . u4_progressive_frame_flag ; ps_dec_op -> e_output_format = ps_dec -> s_disp_op . e_output_format ; ps_dec_op -> s_disp_frm_buf = ps_dec -> s_disp_op . s_disp_frm_buf ; ps_dec_op -> e4_fld_type = ps_dec -> s_disp_op . e4_fld_type ; ps_dec_op -> u4_ts = ps_dec -> s_disp_op . u4_ts ; ps_dec_op -> u4_disp_buf_id = ps_dec -> s_disp_op . u4_disp_buf_id ; ps_dec_op -> u4_is_ref_flag = - 1 ; ps_dec_op -> e_pic_type = IV_NA_FRAME ; ps_dec_op -> u4_frame_decoded_flag = 0 ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { return ( IV_SUCCESS ) ; } else return ( IV_FAIL ) ; } if ( ps_dec -> u1_res_changed == 1 ) { ih264d_init_decoder ( ps_dec ) ; } ps_dec -> u4_prev_nal_skipped = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> u2_total_mbs_coded = 0 ; ps_dec -> u2_cur_slice_num = 0 ; ps_dec -> cur_dec_mb_num = 0 ; ps_dec -> cur_recon_mb_num = 0 ; ps_dec -> u4_first_slice_in_pic = 2 ; ps_dec -> u1_first_pb_nal_in_pic = 1 ; ps_dec -> u1_slice_header_done = 0 ; ps_dec -> u1_dangling_field = 0 ; ps_dec -> u4_dec_thread_created = 0 ; ps_dec -> u4_bs_deblk_thread_created = 0 ; ps_dec -> u4_cur_bs_mb_num = 0 ; ps_dec -> u4_start_recon_deblk = 0 ; DEBUG_THREADS_PRINTF ( \"<S2SV_blank>Starting<S2SV_blank>process<S2SV_blank>call\\\\n\" ) ; ps_dec -> u4_pic_buf_got = 0 ; do { WORD32 buf_size ; pu1_buf = ( UWORD8 * ) ps_dec_ip -> pv_stream_buffer + ps_dec_op -> u4_num_bytes_consumed ; u4_max_ofst = ps_dec_ip -> u4_num_Bytes - ps_dec_op -> u4_num_bytes_consumed ; if ( ( NULL == ps_dec -> pu1_bits_buf_dynamic ) && ( ps_dec -> i4_header_decoded & 1 ) ) { WORD32 size ; void * pv_buf ; void * pv_mem_ctxt = ps_dec -> pv_mem_ctxt ; size = MAX ( 256000 , ps_dec -> u2_pic_wd * ps_dec -> u2_pic_ht * 3 / 2 ) ; pv_buf = ps_dec -> pf_aligned_alloc ( pv_mem_ctxt , 128 , size ) ; RETURN_IF ( ( NULL == pv_buf ) , IV_FAIL ) ; ps_dec -> pu1_bits_buf_dynamic = pv_buf ; ps_dec -> u4_dynamic_bits_buf_size = size ; } if ( ps_dec -> pu1_bits_buf_dynamic ) { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_dynamic ; buf_size = ps_dec -> u4_dynamic_bits_buf_size ; } else { pu1_bitstrm_buf = ps_dec -> pu1_bits_buf_static ; buf_size = ps_dec -> u4_static_bits_buf_size ; } u4_next_is_aud = 0 ; buflen = ih264d_find_start_code ( pu1_buf , 0 , u4_max_ofst , & u4_length_of_start_code , & u4_next_is_aud ) ; if ( buflen == - 1 ) buflen = 0 ; <S2SV_StartBug> buflen = MIN ( buflen , buf_size ) ; <S2SV_EndBug> bytes_consumed = buflen + u4_length_of_start_code ; ps_dec_op -> u4_num_bytes_consumed += bytes_consumed ; { UWORD8 u1_firstbyte , u1_nal_ref_idc ; if ( ps_dec -> i4_app_skip_mode == IVD_SKIP_B ) { u1_firstbyte = * ( pu1_buf + u4_length_of_start_code ) ; u1_nal_ref_idc = ( UWORD8 ) ( NAL_REF_IDC ( u1_firstbyte ) ) ; if ( u1_nal_ref_idc == 0 ) { cur_slice_is_nonref = 1 ; continue ; } else { if ( 1 == cur_slice_is_nonref ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> e_pic_type = IV_B_FRAME ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } } } } if ( buflen ) { memcpy ( pu1_bitstrm_buf , pu1_buf + u4_length_of_start_code , buflen ) ; if ( ( buflen + 8 ) < buf_size ) { memset ( pu1_bitstrm_buf + buflen , 0 , 8 ) ; } u4_first_start_code_found = 1 ; } else { if ( u4_first_start_code_found == 0 ) { ps_dec -> i4_error_code = ERROR_START_CODE_NOT_FOUND ; ps_dec_op -> u4_error_code |= 1 << IVD_INSUFFICIENTDATA ; if ( ps_dec -> u4_pic_buf_got == 0 ) { ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; ps_dec_op -> u4_error_code = ps_dec -> i4_error_code ; ps_dec_op -> u4_frame_decoded_flag = 0 ; return ( IV_FAIL ) ; } else { ps_dec -> u1_pic_decode_done = 1 ; continue ; } } else { frame_data_left = 0 ; header_data_left = 0 ; continue ; } } ps_dec -> u4_return_to_app = 0 ; ret = ih264d_parse_nal_unit ( dec_hdl , ps_dec_op , pu1_bitstrm_buf , buflen ) ; if ( ret != OK ) { UWORD32 error = ih264d_map_error ( ret ) ; ps_dec_op -> u4_error_code = error | ret ; api_ret_value = IV_FAIL ; if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ps_dec -> u4_slice_start_code_found = 0 ; break ; } if ( ( ret == ERROR_INCOMPLETE_FRAME ) || ( ret == ERROR_DANGLING_FIELD_IN_PIC ) ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; api_ret_value = IV_FAIL ; break ; } if ( ret == ERROR_IN_LAST_SLICE_OF_PIC ) { api_ret_value = IV_FAIL ; break ; } } if ( ps_dec -> u4_return_to_app ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } header_data_left = ( ( ps_dec -> i4_decode_header == 1 ) && ( ps_dec -> i4_header_decoded != 3 ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; frame_data_left = ( ( ( ps_dec -> i4_decode_header == 0 ) && ( ( ps_dec -> u1_pic_decode_done == 0 ) || ( u4_next_is_aud == 1 ) ) ) && ( ps_dec_op -> u4_num_bytes_consumed < ps_dec_ip -> u4_num_Bytes ) ) ; } while ( ( header_data_left == 1 ) || ( frame_data_left == 1 ) ) ; if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ret != IVD_MEM_ALLOC_FAILED ) && ps_dec -> u2_total_mbs_coded < ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { WORD32 num_mb_skipped ; WORD32 prev_slice_err ; pocstruct_t temp_poc ; WORD32 ret1 ; WORD32 ht_in_mbs ; ht_in_mbs = ps_dec -> u2_pic_ht >> ( 4 + ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ; num_mb_skipped = ( ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u4_pic_buf_got == 0 ) ) prev_slice_err = 1 ; else prev_slice_err = 2 ; if ( ps_dec -> u4_first_slice_in_pic && ( ps_dec -> u2_total_mbs_coded == 0 ) ) prev_slice_err = 1 ; ret1 = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL , ps_dec -> ps_cur_slice -> u2_frame_num , & temp_poc , prev_slice_err ) ; if ( ( ret1 == ERROR_UNAVAIL_PICBUF_T ) || ( ret1 == ERROR_UNAVAIL_MVBUF_T ) || ( ret1 == ERROR_INV_SPS_PPS_T ) ) { ret = ret1 ; } } if ( ( ret == IVD_RES_CHANGED ) || ( ret == IVD_MEM_ALLOC_FAILED ) || ( ret == ERROR_UNAVAIL_PICBUF_T ) || ( ret == ERROR_UNAVAIL_MVBUF_T ) || ( ret == ERROR_INV_SPS_PPS_T ) ) { ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } if ( ret == IVD_RES_CHANGED ) { ps_dec_op -> u4_num_bytes_consumed -= bytes_consumed ; } return IV_FAIL ; } if ( ps_dec -> u1_separate_parse ) { if ( ps_dec -> u4_num_cores == 2 ) { if ( ( ps_dec -> u4_nmb_deblk == 0 ) && ( ps_dec -> u4_start_recon_deblk == 1 ) && ( ps_dec -> ps_cur_sps -> u1_mb_aff_flag == 0 ) ) { UWORD32 u4_num_mbs , u4_max_addr ; tfr_ctxt_t s_tfr_ctxt ; tfr_ctxt_t * ps_tfr_cxt = & s_tfr_ctxt ; pad_mgr_t * ps_pad_mgr = & ps_dec -> s_pad_mgr ; u4_max_addr = ( ps_dec -> u2_frm_wd_in_mbs * ps_dec -> u2_frm_ht_in_mbs ) - 1 ; ps_dec -> u4_cur_bs_mb_num = u4_max_addr + 1 ; ih264d_init_deblk_tfr_ctxt ( ps_dec , ps_pad_mgr , ps_tfr_cxt , ps_dec -> u2_frm_wd_in_mbs , 0 ) ; u4_num_mbs = u4_max_addr - ps_dec -> u4_cur_deblk_mb_num + 1 ; DEBUG_PERF_PRINTF ( \"mbs<S2SV_blank>left<S2SV_blank>for<S2SV_blank>deblocking=<S2SV_blank>%d<S2SV_blank>\\\\n\" , u4_num_mbs ) ; if ( u4_num_mbs != 0 ) ih264d_check_mb_map_deblk ( ps_dec , u4_num_mbs , ps_tfr_cxt , 1 ) ; ps_dec -> u4_start_recon_deblk = 0 ; } } ih264d_signal_decode_thread ( ps_dec ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } } DATA_SYNC ( ) ; if ( ( ps_dec_op -> u4_error_code & 0xff ) != ERROR_DYNAMIC_RESOLUTION_NOT_SUPPORTED ) { ps_dec_op -> u4_pic_wd = ( UWORD32 ) ps_dec -> u2_disp_width ; ps_dec_op -> u4_pic_ht = ( UWORD32 ) ps_dec -> u2_disp_height ; } if ( ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> i4_decode_header == 1 && ps_dec -> i4_header_decoded != 3 ) { ps_dec_op -> u4_error_code |= ( 1 << IVD_INSUFFICIENTDATA ) ; } if ( ps_dec -> u4_prev_nal_skipped ) { ps_dec_op -> u4_error_code = IVD_DEC_FRM_SKIPPED ; ps_dec_op -> u4_error_code |= ( 1 << IVD_UNSUPPORTEDPARAM ) ; ps_dec_op -> u4_frame_decoded_flag = 0 ; ps_dec_op -> u4_size = sizeof ( ivd_video_decode_op_t ) ; if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } return ( IV_FAIL ) ; } if ( ( ps_dec -> u4_slice_start_code_found == 1 ) && ( ERROR_DANGLING_FIELD_IN_PIC != i4_err_status ) ) { if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) { if ( 1 == ps_dec -> ps_cur_slice -> u1_bottom_field_flag ) { ps_dec -> u1_top_bottom_decoded |= BOT_FIELD_ONLY ; } else { ps_dec -> u1_top_bottom_decoded |= TOP_FIELD_ONLY ; } } if ( ( ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) == 0 ) && ( ps_dec -> u4_pic_buf_got == 1 ) ) { ret = ih264d_deblock_display ( ps_dec ) ; if ( ret != 0 ) { return IV_FAIL ; } } if ( ps_dec -> i4_header_decoded == 3 ) { ps_dec -> u2_total_mbs_coded = ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ; } if ( ps_dec -> ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ) { ps_dec -> i4_frametype = IV_IDR_FRAME ; } else if ( ps_dec -> i4_pic_type == B_SLICE ) { ps_dec -> i4_frametype = IV_B_FRAME ; } else if ( ps_dec -> i4_pic_type == P_SLICE ) { ps_dec -> i4_frametype = IV_P_FRAME ; } else if ( ps_dec -> i4_pic_type == I_SLICE ) { ps_dec -> i4_frametype = IV_I_FRAME ; } else { H264_DEC_DEBUG_PRINT ( \"Shouldn\\'t<S2SV_blank>come<S2SV_blank>here\\\\n\" ) ; } ps_dec -> i4_content_type = ps_dec -> ps_cur_slice -> u1_field_pic_flag ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded + 2 ; ps_dec -> u4_total_frames_decoded = ps_dec -> u4_total_frames_decoded - ps_dec -> ps_cur_slice -> u1_field_pic_flag ; } if ( ps_dec -> u4_num_cores == 3 ) { ih264d_signal_bs_deblk_thread ( ps_dec ) ; } { if ( ( IVD_DECODE_FRAME_OUT == ps_dec -> e_frm_out_mode ) && ps_dec -> u1_init_dec_flag ) { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 == ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = 0 ; ps_dec -> u4_output_present = 1 ; } } ih264d_fill_output_struct_from_context ( ps_dec , ps_dec_op ) ; if ( ps_dec -> u4_output_present && ( ps_dec -> u4_fmt_conv_cur_row < ps_dec -> s_disp_frame_info . u4_y_ht ) ) { ps_dec -> u4_fmt_conv_num_rows = ps_dec -> s_disp_frame_info . u4_y_ht - ps_dec -> u4_fmt_conv_cur_row ; ih264d_format_convert ( ps_dec , & ( ps_dec -> s_disp_op ) , ps_dec -> u4_fmt_conv_cur_row , ps_dec -> u4_fmt_conv_num_rows ) ; ps_dec -> u4_fmt_conv_cur_row += ps_dec -> u4_fmt_conv_num_rows ; } ih264d_release_display_field ( ps_dec , & ( ps_dec -> s_disp_op ) ) ; } if ( ps_dec -> i4_decode_header == 1 && ( ps_dec -> i4_header_decoded & 1 ) == 1 ) { ps_dec_op -> u4_progressive_frame_flag = 1 ; if ( ( NULL != ps_dec -> ps_cur_sps ) && ( 1 == ( ps_dec -> ps_cur_sps -> u1_is_valid ) ) ) { if ( ( 0 == ps_dec -> ps_sps -> u1_frame_mbs_only_flag ) && ( 0 == ps_dec -> ps_sps -> u1_mb_aff_flag ) ) ps_dec_op -> u4_progressive_frame_flag = 0 ; } } DATA_SYNC ( ) ; H264_DEC_DEBUG_PRINT ( \"The<S2SV_blank>num<S2SV_blank>bytes<S2SV_blank>consumed:<S2SV_blank>%d\\\\n\" , ps_dec_op -> u4_num_bytes_consumed ) ; return api_ret_value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buflen , buf_size - 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9708\n\n```\nCWE-000 static int crossOriginDirective ( MaState * state , cchar * key , cchar * value ) { HttpRoute * route ; char * option , * ovalue , * tok ; route = state -> route ; tok = sclone ( value ) ; while ( ( option = maGetNextArg ( tok , & tok ) ) != 0 ) { <S2SV_StartBug> option = stok ( option , \"<S2SV_blank>=\\\\t,\" , & ovalue ) ; <S2SV_EndBug> ovalue = strim ( ovalue , \"\\\\\"\\'\" , MPR_TRIM_BOTH ) ; if ( scaselessmatch ( option , \"origin\" ) ) { route -> corsOrigin = sclone ( ovalue ) ; } else if ( scaselessmatch ( option , \"credentials\" ) ) { route -> corsCredentials = httpGetBoolToken ( ovalue ) ; } else if ( scaselessmatch ( option , \"headers\" ) ) { route -> corsHeaders = sclone ( ovalue ) ; } else if ( scaselessmatch ( option , \"age\" ) ) { route -> corsAge = atoi ( ovalue ) ; } else { mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"Unknown<S2SV_blank>CrossOrigin<S2SV_blank>option<S2SV_blank>%s\" , option ) ; return MPR_ERR_BAD_SYNTAX ; } } # if KEEP if ( smatch ( route -> corsOrigin , \"*\" ) && route -> corsCredentials ) { mprLog ( \"error<S2SV_blank>appweb<S2SV_blank>config\" , 0 , \"CrossOrigin:<S2SV_blank>Cannot<S2SV_blank>use<S2SV_blank>wildcard<S2SV_blank>Origin<S2SV_blank>if<S2SV_blank>allowing<S2SV_blank>credentials\" ) ; return MPR_ERR_BAD_STATE ; } # endif httpAddRouteMethods ( route , \"OPTIONS\" ) ; route -> flags |= HTTP_ROUTE_CORS ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { option = ssplit <S2SV_ModEnd> ( option ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10266\n\n```\nCWE-369 tmsize_t TIFFReadEncodedStrip ( TIFF * tif , uint32 strip , void * buf , tmsize_t size ) { static const char module [ ] = \"TIFFReadEncodedStrip\" ; TIFFDirectory * td = & tif -> tif_dir ; uint32 rowsperstrip ; uint32 stripsperplane ; uint32 stripinplane ; uint16 plane ; uint32 rows ; tmsize_t stripsize ; if ( ! TIFFCheckRead ( tif , 0 ) ) return ( ( tmsize_t ) ( - 1 ) ) ; if ( strip >= td -> td_nstrips ) { TIFFErrorExt ( tif -> tif_clientdata , module , \"%lu:<S2SV_blank>Strip<S2SV_blank>out<S2SV_blank>of<S2SV_blank>range,<S2SV_blank>max<S2SV_blank>%lu\" , ( unsigned long ) strip , ( unsigned long ) td -> td_nstrips ) ; return ( ( tmsize_t ) ( - 1 ) ) ; } rowsperstrip = td -> td_rowsperstrip ; if ( rowsperstrip > td -> td_imagelength ) rowsperstrip = td -> td_imagelength ; <S2SV_StartBug> stripsperplane = ( ( td -> td_imagelength + rowsperstrip - 1 ) / rowsperstrip ) ; <S2SV_EndBug> stripinplane = ( strip % stripsperplane ) ; plane = ( uint16 ) ( strip / stripsperplane ) ; rows = td -> td_imagelength - stripinplane * rowsperstrip ; if ( rows > rowsperstrip ) rows = rowsperstrip ; stripsize = TIFFVStripSize ( tif , rows ) ; if ( stripsize == 0 ) return ( ( tmsize_t ) ( - 1 ) ) ; if ( td -> td_compression == COMPRESSION_NONE && size != ( tmsize_t ) ( - 1 ) && size >= stripsize && ! isMapped ( tif ) && ( ( tif -> tif_flags & TIFF_NOREADRAW ) == 0 ) ) { if ( TIFFReadRawStrip1 ( tif , strip , buf , stripsize , module ) != stripsize ) return ( ( tmsize_t ) ( - 1 ) ) ; if ( ! isFillOrder ( tif , td -> td_fillorder ) && ( tif -> tif_flags & TIFF_NOBITREV ) == 0 ) TIFFReverseBits ( buf , stripsize ) ; ( * tif -> tif_postdecode ) ( tif , buf , stripsize ) ; return ( stripsize ) ; } if ( ( size != ( tmsize_t ) ( - 1 ) ) && ( size < stripsize ) ) stripsize = size ; if ( ! TIFFFillStrip ( tif , strip ) ) return ( ( tmsize_t ) ( - 1 ) ) ; if ( ( * tif -> tif_decodestrip ) ( tif , buf , stripsize , plane ) <= 0 ) return ( ( tmsize_t ) ( - 1 ) ) ; ( * tif -> tif_postdecode ) ( tif , buf , stripsize ) ; return ( stripsize ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; stripsperplane = TIFFhowmany_32_maxuint_compat <S2SV_ModEnd> ( td -> <S2SV_ModStart> td -> td_imagelength , <S2SV_ModEnd> rowsperstrip ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8654\n\n```\nCWE-119 void jpc_qmfb_split_colgrp ( jpc_fix_t * a , int numrows , int stride , int parity ) { int bufsize = JPC_CEILDIVPOW2 ( numrows , 1 ) ; jpc_fix_t splitbuf [ QMFB_SPLITBUFSIZE * JPC_QMFB_COLGRPSIZE ] ; jpc_fix_t * buf = splitbuf ; jpc_fix_t * srcptr ; jpc_fix_t * dstptr ; register jpc_fix_t * srcptr2 ; register jpc_fix_t * dstptr2 ; register int n ; register int i ; int m ; <S2SV_StartBug> int hstartcol ; <S2SV_EndBug> if ( bufsize > QMFB_SPLITBUFSIZE ) { <S2SV_StartBug> if ( ! ( buf = jas_alloc2 ( bufsize , sizeof ( jpc_fix_t ) ) ) ) { <S2SV_EndBug> abort ( ) ; } } if ( numrows >= 2 ) { <S2SV_StartBug> hstartcol = ( numrows + 1 - parity ) >> 1 ; <S2SV_EndBug> <S2SV_StartBug> m = numrows - hstartcol ; <S2SV_EndBug> n = m ; dstptr = buf ; srcptr = & a [ ( 1 - parity ) * stride ] ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < JPC_QMFB_COLGRPSIZE ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } dstptr += JPC_QMFB_COLGRPSIZE ; srcptr += stride << 1 ; } dstptr = & a [ ( 1 - parity ) * stride ] ; srcptr = & a [ ( 2 - parity ) * stride ] ; n = numrows - m - ( ! parity ) ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < JPC_QMFB_COLGRPSIZE ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } dstptr += stride ; srcptr += stride << 1 ; } <S2SV_StartBug> dstptr = & a [ hstartcol * stride ] ; <S2SV_EndBug> srcptr = buf ; n = m ; while ( n -- > 0 ) { dstptr2 = dstptr ; srcptr2 = srcptr ; for ( i = 0 ; i < JPC_QMFB_COLGRPSIZE ; ++ i ) { * dstptr2 = * srcptr2 ; ++ dstptr2 ; ++ srcptr2 ; } dstptr += stride ; srcptr += JPC_QMFB_COLGRPSIZE ; } } if ( buf != splitbuf ) { jas_free ( buf ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> m ; int hstartrow <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( buf = jas_alloc3 <S2SV_ModEnd> ( bufsize , <S2SV_ModStart> ( bufsize , JPC_QMFB_COLGRPSIZE , <S2SV_ModStart> 2 ) { hstartrow <S2SV_ModEnd> = ( numrows <S2SV_ModStart> = numrows - hstartrow <S2SV_ModEnd> ; n = <S2SV_ModStart> & a [ hstartrow <S2SV_ModEnd> * stride ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2133\n\n```\nCWE-399 static int hugetlbfs_statfs ( struct dentry * dentry , struct kstatfs * buf ) { struct hugetlbfs_sb_info * sbinfo = HUGETLBFS_SB ( dentry -> d_sb ) ; struct hstate * h = hstate_inode ( dentry -> d_inode ) ; buf -> f_type = HUGETLBFS_MAGIC ; buf -> f_bsize = huge_page_size ( h ) ; if ( sbinfo ) { spin_lock ( & sbinfo -> stat_lock ) ; <S2SV_StartBug> if ( sbinfo -> max_blocks >= 0 ) { <S2SV_EndBug> <S2SV_StartBug> buf -> f_blocks = sbinfo -> max_blocks ; <S2SV_EndBug> <S2SV_StartBug> buf -> f_bavail = buf -> f_bfree = sbinfo -> free_blocks ; <S2SV_EndBug> buf -> f_files = sbinfo -> max_inodes ; buf -> f_ffree = sbinfo -> free_inodes ; } spin_unlock ( & sbinfo -> stat_lock ) ; } buf -> f_namelen = NAME_MAX ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sbinfo -> spool ) { long free_pages ; spin_lock ( & sbinfo -> spool -> lock ) ; <S2SV_ModEnd> buf -> f_blocks <S2SV_ModStart> = sbinfo -> spool -> max_hpages ; free_pages = sbinfo -> spool -> max_hpages - sbinfo -> spool -> used_hpages <S2SV_ModEnd> ; buf -> <S2SV_ModStart> -> f_bfree = free_pages ; spin_unlock ( & sbinfo -> spool -> lock ) <S2SV_ModEnd> ; buf ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000524\n\n```\nCWE-190 bool layer_resize ( int layer , int x_size , int y_size ) { int old_height ; int old_width ; struct map_tile * tile ; int tile_width ; int tile_height ; struct map_tile * tilemap ; struct map_trigger * trigger ; struct map_zone * zone ; <S2SV_StartBug> int x , y , i ; <S2SV_EndBug> old_width = s_map -> layers [ layer ] . width ; old_height = s_map -> layers [ layer ] . height ; <S2SV_StartBug> if ( ! ( tilemap = malloc ( x_size * y_size * sizeof ( struct map_tile ) ) ) ) <S2SV_EndBug> return false ; for ( x = 0 ; x < x_size ; ++ x ) { for ( y = 0 ; y < y_size ; ++ y ) { if ( x < old_width && y < old_height ) { tilemap [ x + y * x_size ] = s_map -> layers [ layer ] . tilemap [ x + y * old_width ] ; } else { tile = & tilemap [ x + y * x_size ] ; tile -> frames_left = tileset_get_delay ( s_map -> tileset , 0 ) ; tile -> tile_index = 0 ; } } } free ( s_map -> layers [ layer ] . tilemap ) ; s_map -> layers [ layer ] . tilemap = tilemap ; s_map -> layers [ layer ] . width = x_size ; s_map -> layers [ layer ] . height = y_size ; tileset_get_size ( s_map -> tileset , & tile_width , & tile_height ) ; s_map -> width = 0 ; s_map -> height = 0 ; for ( i = 0 ; i < s_map -> num_layers ; ++ i ) { if ( ! s_map -> layers [ i ] . is_parallax ) { s_map -> width = fmax ( s_map -> width , s_map -> layers [ i ] . width * tile_width ) ; s_map -> height = fmax ( s_map -> height , s_map -> layers [ i ] . height * tile_height ) ; } } for ( i = ( int ) vector_len ( s_map -> zones ) - 1 ; i >= 0 ; -- i ) { zone = vector_get ( s_map -> zones , i ) ; if ( zone -> bounds . x1 >= s_map -> width || zone -> bounds . y1 >= s_map -> height ) vector_remove ( s_map -> zones , i ) ; else { if ( zone -> bounds . x2 > s_map -> width ) zone -> bounds . x2 = s_map -> width ; if ( zone -> bounds . y2 > s_map -> height ) zone -> bounds . y2 = s_map -> height ; } } for ( i = ( int ) vector_len ( s_map -> triggers ) - 1 ; i >= 0 ; -- i ) { trigger = vector_get ( s_map -> triggers , i ) ; if ( trigger -> x >= s_map -> width || trigger -> y >= s_map -> height ) vector_remove ( s_map -> triggers , i ) ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * zone ; size_t tilemap_size ; <S2SV_ModStart> . height ; tilemap_size = <S2SV_ModEnd> x_size * y_size <S2SV_ModStart> struct map_tile ) ; if ( x_size == 0 || tilemap_size / x_size / sizeof ( struct map_tile ) != y_size || ! ( tilemap = malloc ( tilemap_size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-1690\n\n```\nCWE-119 static unsigned int help ( struct sk_buff * skb , enum ip_conntrack_info ctinfo , unsigned int protoff , unsigned int matchoff , unsigned int matchlen , struct nf_conntrack_expect * exp ) { char buffer [ sizeof ( \"4294967296<S2SV_blank>65635\" ) ] ; <S2SV_StartBug> u_int16_t port ; <S2SV_EndBug> <S2SV_StartBug> unsigned int ret ; <S2SV_EndBug> exp -> saved_proto . tcp . port = exp -> tuple . dst . u . tcp . port ; exp -> dir = IP_CT_DIR_REPLY ; exp -> expectfn = nf_nat_follow_master ; for ( port = ntohs ( exp -> saved_proto . tcp . port ) ; port != 0 ; port ++ ) { int ret ; exp -> tuple . dst . u . tcp . port = htons ( port ) ; ret = nf_ct_expect_related ( exp ) ; if ( ret == 0 ) break ; else if ( ret != - EBUSY ) { port = 0 ; break ; } } if ( port == 0 ) { <S2SV_StartBug> nf_ct_helper_log ( skb , exp -> master , \"all<S2SV_blank>ports<S2SV_blank>in<S2SV_blank>use\" ) ; <S2SV_EndBug> return NF_DROP ; } <S2SV_StartBug> ret = nf_nat_mangle_tcp_packet ( skb , exp -> master , ctinfo , <S2SV_EndBug> protoff , matchoff , matchlen , buffer , strlen ( buffer ) ) ; if ( ret != NF_ACCEPT ) { <S2SV_StartBug> nf_ct_helper_log ( skb , exp -> master , \"cannot<S2SV_blank>mangle<S2SV_blank>packet\" ) ; <S2SV_EndBug> nf_ct_unexpect_related ( exp ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ] ; struct nf_conn * ct = exp -> master ; union nf_inet_addr newaddr ; <S2SV_ModStart> unsigned int ret ; newaddr = ct -> tuplehash [ IP_CT_DIR_REPLY ] . tuple . dst . u3 <S2SV_ModStart> ( skb , ct <S2SV_ModEnd> , \"all<S2SV_blank>ports<S2SV_blank>in<S2SV_blank>use\" ) <S2SV_ModStart> NF_DROP ; } snprintf ( buffer , sizeof ( buffer ) , \"%u<S2SV_blank>%u\" , ntohl ( newaddr . ip ) , port ) ; pr_debug ( \"nf_nat_irc:<S2SV_blank>inserting<S2SV_blank>\\'%s\\'<S2SV_blank>==<S2SV_blank>%pI4,<S2SV_blank>port<S2SV_blank>%u\\\\n\" , buffer , & newaddr . ip , port ) ; <S2SV_ModStart> ( skb , ct <S2SV_ModEnd> , ctinfo , <S2SV_ModStart> ( skb , ct <S2SV_ModEnd> , \"cannot<S2SV_blank>mangle<S2SV_blank>packet\" )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9059\n\n```\nCWE-404 int nfs3svc_decode_readargs ( struct svc_rqst * rqstp , __be32 * p , struct nfsd3_readargs * args ) { unsigned int len ; int v ; u32 max_blocksize = svc_max_payload ( rqstp ) ; p = decode_fh ( p , & args -> fh ) ; if ( ! p ) return 0 ; p = xdr_decode_hyper ( p , & args -> offset ) ; <S2SV_StartBug> args -> count = ntohl ( * p ++ ) ; <S2SV_EndBug> len = min ( args -> count , max_blocksize ) ; v = 0 ; while ( len > 0 ) { struct page * p = * ( rqstp -> rq_next_page ++ ) ; rqstp -> rq_vec [ v ] . iov_base = page_address ( p ) ; rqstp -> rq_vec [ v ] . iov_len = min_t ( unsigned int , len , PAGE_SIZE ) ; len -= rqstp -> rq_vec [ v ] . iov_len ; v ++ ; } args -> vlen = v ; <S2SV_StartBug> return xdr_argsize_check ( rqstp , p ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p ++ ) ; if ( ! xdr_argsize_check ( rqstp , p ) ) return 0 <S2SV_ModStart> v ; return 1 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20459\n\n```\nCWE-125 static bool parseOperands ( char * str , ArmOp * op ) { char * t = strdup ( str ) ; int operand = 0 ; char * token = t ; char * x ; int imm_count = 0 ; int mem_opt = 0 ; if ( ! token ) { return false ; } while ( token ) { char * next = strchr ( token , ',' ) ; if ( next ) { * next ++ = 0 ; } while ( token [ 0 ] == '<S2SV_blank>' ) { token ++ ; } if ( operand >= MAX_OPERANDS ) { eprintf ( \"Too<S2SV_blank>many<S2SV_blank>operands\\\\n\" ) ; return false ; } op -> operands [ operand ] . type = ARM_NOTYPE ; op -> operands [ operand ] . reg_type = ARM_UNDEFINED ; op -> operands [ operand ] . shift = ARM_NO_SHIFT ; while ( token [ 0 ] == '<S2SV_blank>' || token [ 0 ] == '[' || token [ 0 ] == ']' ) { token ++ ; } if ( ! strncmp ( token , \"lsl\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_LSL ; } else if ( ! strncmp ( token , \"lsr\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_LSR ; } else if ( ! strncmp ( token , \"asr\" , 3 ) ) { op -> operands [ operand ] . shift = ARM_ASR ; } <S2SV_StartBug> if ( op -> operands [ operand ] . shift != ARM_NO_SHIFT ) { <S2SV_EndBug> op -> operands_count ++ ; op -> operands [ operand ] . shift_amount = r_num_math ( NULL , token + 4 ) ; if ( op -> operands [ operand ] . shift_amount > 63 ) { return false ; } operand ++ ; token = next ; continue ; } switch ( token [ 0 ] ) { case 'x' : x = strchr ( token , ',' ) ; if ( x ) { x [ 0 ] = '\\\\0' ; } op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_REG64 ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; if ( op -> operands [ operand ] . reg > 31 ) { return false ; } break ; case 'w' : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_REG32 ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; if ( op -> operands [ operand ] . reg > 31 ) { return false ; } break ; case 'v' : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_FP ; op -> operands [ operand ] . reg = r_num_math ( NULL , token + 1 ) ; break ; case 's' : case 'S' : if ( token [ 1 ] == 'P' || token [ 1 ] == 'p' ) { int i ; for ( i = 0 ; msr_const [ i ] . name ; i ++ ) { if ( ! r_str_ncasecmp ( token , msr_const [ i ] . name , strlen ( msr_const [ i ] . name ) ) ) { op -> operands [ operand ] . sp_val = msr_const [ i ] . val ; break ; } } op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_GPR ; op -> operands [ operand ] . reg_type = ARM_SP | ARM_REG64 ; op -> operands [ operand ] . reg = 31 ; break ; } mem_opt = get_mem_option ( token ) ; if ( mem_opt != - 1 ) { op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_MEM_OPT ; op -> operands [ operand ] . mem_option = mem_opt ; } break ; case 'L' : case 'l' : case 'I' : case 'i' : case 'N' : case 'n' : case 'O' : case 'o' : case 'p' : case 'P' : mem_opt = get_mem_option ( token ) ; if ( mem_opt != - 1 ) { op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_MEM_OPT ; op -> operands [ operand ] . mem_option = mem_opt ; } break ; case '-' : op -> operands [ operand ] . sign = - 1 ; default : op -> operands_count ++ ; op -> operands [ operand ] . type = ARM_CONSTANT ; op -> operands [ operand ] . immediate = r_num_math ( NULL , token ) ; imm_count ++ ; break ; } token = next ; operand ++ ; if ( operand > MAX_OPERANDS ) { free ( t ) ; return false ; } } free ( t ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( strlen ( token ) > 4 &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void perf_swevent_overflow ( struct perf_event * event , u64 overflow , <S2SV_StartBug> int nmi , struct perf_sample_data * data , <S2SV_EndBug> struct pt_regs * regs ) { struct hw_perf_event * hwc = & event -> hw ; int throttle = 0 ; data -> period = event -> hw . last_period ; if ( ! overflow ) overflow = perf_swevent_set_period ( event ) ; if ( hwc -> interrupts == MAX_INTERRUPTS ) return ; for ( ; overflow ; overflow -- ) { <S2SV_StartBug> if ( __perf_event_overflow ( event , nmi , throttle , <S2SV_EndBug> data , regs ) ) { break ; } throttle = 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u64 overflow , <S2SV_ModEnd> struct perf_sample_data * <S2SV_ModStart> ( event , <S2SV_ModEnd> throttle , data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static INLINE void write_buffer_4x4 ( int16_t * output , __m128i * res ) { <S2SV_EndBug> const __m128i kOne = _mm_set1_epi16 ( 1 ) ; __m128i in01 = _mm_unpacklo_epi64 ( res [ 0 ] , res [ 1 ] ) ; __m128i in23 = _mm_unpacklo_epi64 ( res [ 2 ] , res [ 3 ] ) ; __m128i out01 = _mm_add_epi16 ( in01 , kOne ) ; __m128i out23 = _mm_add_epi16 ( in23 , kOne ) ; out01 = _mm_srai_epi16 ( out01 , 2 ) ; out23 = _mm_srai_epi16 ( out23 , 2 ) ; <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 0 * 8 ) , out01 ) ; <S2SV_EndBug> <S2SV_StartBug> _mm_store_si128 ( ( __m128i * ) ( output + 1 * 8 ) , out23 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void write_buffer_4x4 ( tran_low_t <S2SV_ModEnd> * output , <S2SV_ModStart> 2 ) ; store_output ( & out01 , <S2SV_ModEnd> ( output + <S2SV_ModStart> * 8 ) ) ; store_output ( & out23 , <S2SV_ModEnd> ( output + <S2SV_ModStart> * 8 ) <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4796\n\n```\nCWE-119 void color_cmyk_to_rgb ( opj_image_t * image ) { float C , M , Y , K ; float sC , sM , sY , sK ; unsigned int w , h , max , i ; w = image -> comps [ 0 ] . w ; h = image -> comps [ 0 ] . h ; <S2SV_StartBug> if ( image -> numcomps < 4 ) return ; <S2SV_EndBug> max = w * h ; sC = 1.0F / ( float ) ( ( 1 << image -> comps [ 0 ] . prec ) - 1 ) ; sM = 1.0F / ( float ) ( ( 1 << image -> comps [ 1 ] . prec ) - 1 ) ; sY = 1.0F / ( float ) ( ( 1 << image -> comps [ 2 ] . prec ) - 1 ) ; sK = 1.0F / ( float ) ( ( 1 << image -> comps [ 3 ] . prec ) - 1 ) ; for ( i = 0 ; i < max ; ++ i ) { C = ( float ) ( image -> comps [ 0 ] . data [ i ] ) * sC ; M = ( float ) ( image -> comps [ 1 ] . data [ i ] ) * sM ; Y = ( float ) ( image -> comps [ 2 ] . data [ i ] ) * sY ; K = ( float ) ( image -> comps [ 3 ] . data [ i ] ) * sK ; C = 1.0F - C ; M = 1.0F - M ; Y = 1.0F - Y ; K = 1.0F - K ; image -> comps [ 0 ] . data [ i ] = ( int ) ( 255.0F * C * K ) ; image -> comps [ 1 ] . data [ i ] = ( int ) ( 255.0F * M * K ) ; image -> comps [ 2 ] . data [ i ] = ( int ) ( 255.0F * Y * K ) ; } free ( image -> comps [ 3 ] . data ) ; image -> comps [ 3 ] . data = NULL ; image -> comps [ 0 ] . prec = 8 ; image -> comps [ 1 ] . prec = 8 ; image -> comps [ 2 ] . prec = 8 ; image -> numcomps -= 1 ; image -> color_space = OPJ_CLRSPC_SRGB ; for ( i = 3 ; i < image -> numcomps ; ++ i ) { memcpy ( & ( image -> comps [ i ] ) , & ( image -> comps [ i + 1 ] ) , sizeof ( image -> comps [ i ] ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ( <S2SV_ModStart> < 4 ) || ( image -> comps [ 0 ] . dx != image -> comps [ 1 ] . dx ) || ( image -> comps [ 0 ] . dx != image -> comps [ 2 ] . dx ) || ( image -> comps [ 0 ] . dx != image -> comps [ 3 ] . dx ) || ( image -> comps [ 0 ] . dy != image -> comps [ 1 ] . dy ) || ( image -> comps [ 0 ] . dy != image -> comps [ 2 ] . dy ) || ( image -> comps [ 0 ] . dy != image -> comps [ 3 ] . dy ) ) { fprintf ( stderr , \"%s:%d:color_cmyk_to_rgb\\\\n\\\\tCAN<S2SV_blank>NOT<S2SV_blank>CONVERT\\\\n\" , __FILE__ , __LINE__ ) ; return ; } <S2SV_ModEnd> max = w\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-494(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13083\n\n```\nCWE-494 LONG ValidateSignature ( HWND hDlg , const char * path ) { LONG r ; WINTRUST_DATA trust_data = { 0 } ; WINTRUST_FILE_INFO trust_file = { 0 } ; GUID guid_generic_verify = { 0xaac56b , 0xcd44 , 0x11d0 , { 0x8c , 0xc2 , 0x0 , 0xc0 , 0x4f , 0xc2 , 0x95 , 0xee } } ; char * signature_name ; size_t i , len ; signature_name = GetSignatureName ( path ) ; if ( signature_name == NULL ) { uprintf ( \"PKI:<S2SV_blank>Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>signature<S2SV_blank>name\" ) ; MessageBoxExU ( hDlg , lmprintf ( MSG_284 ) , lmprintf ( MSG_283 ) , MB_OK | MB_ICONERROR | MB_IS_RTL , selected_langid ) ; return TRUST_E_NOSIGNATURE ; } for ( i = 0 ; i < ARRAYSIZE ( cert_name ) ; i ++ ) { len = strlen ( cert_name [ i ] ) ; if ( strncmp ( signature_name , cert_name [ i ] , len ) == 0 ) { if ( ( len >= strlen ( signature_name ) ) || isspace ( signature_name [ len ] ) ) break ; } } if ( i >= ARRAYSIZE ( cert_name ) ) { uprintf ( \"PKI:<S2SV_blank>Signature<S2SV_blank>\\'%s\\'<S2SV_blank>is<S2SV_blank>unexpected...\" , signature_name ) ; if ( MessageBoxExU ( hDlg , lmprintf ( MSG_285 , signature_name ) , lmprintf ( MSG_283 ) , MB_YESNO | MB_ICONWARNING | MB_IS_RTL , selected_langid ) != IDYES ) return TRUST_E_EXPLICIT_DISTRUST ; } trust_file . cbStruct = sizeof ( trust_file ) ; trust_file . pcwszFilePath = utf8_to_wchar ( path ) ; if ( trust_file . pcwszFilePath == NULL ) { uprintf ( \"PKI:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>\\'%s\\'<S2SV_blank>to<S2SV_blank>UTF16\" , path ) ; return ERROR_SEVERITY_ERROR | FAC ( FACILITY_CERT ) | ERROR_NOT_ENOUGH_MEMORY ; } trust_data . cbStruct = sizeof ( trust_data ) ; <S2SV_StartBug> trust_data . dwUIChoice = WTD_UI_ALL ; <S2SV_EndBug> trust_data . fdwRevocationChecks = WTD_REVOKE_WHOLECHAIN ; trust_data . dwProvFlags = WTD_REVOCATION_CHECK_CHAIN | 0x400 ; trust_data . dwUnionChoice = WTD_CHOICE_FILE ; trust_data . pFile = & trust_file ; r = WinVerifyTrust ( NULL , & guid_generic_verify , & trust_data ) ; safe_free ( trust_file . pcwszFilePath ) ; <S2SV_StartBug> return r ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . dwUIChoice = WTD_UI_NONE <S2SV_ModEnd> ; trust_data . <S2SV_ModStart> pcwszFilePath ) ; switch ( r ) { case ERROR_SUCCESS : break ; case TRUST_E_NOSIGNATURE : uprintf ( \"PKI:<S2SV_blank>File<S2SV_blank>does<S2SV_blank>not<S2SV_blank>appear<S2SV_blank>to<S2SV_blank>be<S2SV_blank>signed:<S2SV_blank>%s\" , WinPKIErrorString ( ) ) ; MessageBoxExU ( hDlg , lmprintf ( MSG_284 ) , lmprintf ( MSG_283 ) , MB_OK | MB_ICONERROR | MB_IS_RTL , selected_langid ) ; break ; default : uprintf ( \"PKI:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>validate<S2SV_blank>signature:<S2SV_blank>%s\" , WinPKIErrorString ( ) ) ; MessageBoxExU ( hDlg , lmprintf ( MSG_240 ) , lmprintf ( MSG_283 ) , MB_OK | MB_ICONERROR | MB_IS_RTL , selected_langid ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9540\n\n```\nCWE-787 DECLAREreadFunc ( readContigTilesIntoBuffer ) { int status = 1 ; tsize_t tilesize = TIFFTileSize ( in ) ; tdata_t tilebuf ; uint32 imagew = TIFFScanlineSize ( in ) ; uint32 tilew = TIFFTileRowSize ( in ) ; int iskew = imagew - tilew ; uint8 * bufp = ( uint8 * ) buf ; uint32 tw , tl ; uint32 row ; ( void ) spp ; tilebuf = _TIFFmalloc ( tilesize ) ; if ( tilebuf == 0 ) return 0 ; _TIFFmemset ( tilebuf , 0 , tilesize ) ; ( void ) TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tw ) ; ( void ) TIFFGetField ( in , TIFFTAG_TILELENGTH , & tl ) ; for ( row = 0 ; row < imagelength ; row += tl ) { uint32 nrow = ( row + tl > imagelength ) ? imagelength - row : tl ; uint32 colb = 0 ; uint32 col ; <S2SV_StartBug> for ( col = 0 ; col < imagewidth ; col += tw ) { <S2SV_EndBug> if ( TIFFReadTile ( in , tilebuf , col , row , 0 , 0 ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>tile<S2SV_blank>at<S2SV_blank>%lu<S2SV_blank>%lu\" , ( unsigned long ) col , ( unsigned long ) row ) ; status = 0 ; goto done ; } if ( colb + tilew > imagew ) { uint32 width = imagew - colb ; uint32 oskew = tilew - width ; cpStripToTile ( bufp + colb , tilebuf , nrow , width , oskew + iskew , oskew ) ; } else cpStripToTile ( bufp + colb , tilebuf , nrow , tilew , iskew , 0 ) ; colb += tilew ; } bufp += imagew * nrow ; } done : _TIFFfree ( tilebuf ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> col < imagewidth && colb < imagew\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3645\n\n```\nCWE-20 static bool nested_vmx_exit_handled ( struct kvm_vcpu * vcpu ) { u32 intr_info = vmcs_read32 ( VM_EXIT_INTR_INFO ) ; struct vcpu_vmx * vmx = to_vmx ( vcpu ) ; struct vmcs12 * vmcs12 = get_vmcs12 ( vcpu ) ; u32 exit_reason = vmx -> exit_reason ; if ( vmx -> nested . nested_run_pending ) return 0 ; if ( unlikely ( vmx -> fail ) ) { pr_info_ratelimited ( \"%s<S2SV_blank>failed<S2SV_blank>vm<S2SV_blank>entry<S2SV_blank>%x\\\\n\" , __func__ , vmcs_read32 ( VM_INSTRUCTION_ERROR ) ) ; return 1 ; } switch ( exit_reason ) { case EXIT_REASON_EXCEPTION_NMI : if ( ! is_exception ( intr_info ) ) return 0 ; else if ( is_page_fault ( intr_info ) ) return enable_ept ; return vmcs12 -> exception_bitmap & ( 1u << ( intr_info & INTR_INFO_VECTOR_MASK ) ) ; case EXIT_REASON_EXTERNAL_INTERRUPT : return 0 ; case EXIT_REASON_TRIPLE_FAULT : return 1 ; case EXIT_REASON_PENDING_INTERRUPT : return nested_cpu_has ( vmcs12 , CPU_BASED_VIRTUAL_INTR_PENDING ) ; case EXIT_REASON_NMI_WINDOW : return nested_cpu_has ( vmcs12 , CPU_BASED_VIRTUAL_NMI_PENDING ) ; case EXIT_REASON_TASK_SWITCH : return 1 ; case EXIT_REASON_CPUID : return 1 ; case EXIT_REASON_HLT : return nested_cpu_has ( vmcs12 , CPU_BASED_HLT_EXITING ) ; case EXIT_REASON_INVD : return 1 ; case EXIT_REASON_INVLPG : return nested_cpu_has ( vmcs12 , CPU_BASED_INVLPG_EXITING ) ; case EXIT_REASON_RDPMC : return nested_cpu_has ( vmcs12 , CPU_BASED_RDPMC_EXITING ) ; case EXIT_REASON_RDTSC : return nested_cpu_has ( vmcs12 , CPU_BASED_RDTSC_EXITING ) ; case EXIT_REASON_VMCALL : case EXIT_REASON_VMCLEAR : case EXIT_REASON_VMLAUNCH : case EXIT_REASON_VMPTRLD : case EXIT_REASON_VMPTRST : case EXIT_REASON_VMREAD : case EXIT_REASON_VMRESUME : case EXIT_REASON_VMWRITE : case EXIT_REASON_VMOFF : case EXIT_REASON_VMON : <S2SV_StartBug> return 1 ; <S2SV_EndBug> case EXIT_REASON_CR_ACCESS : return nested_vmx_exit_handled_cr ( vcpu , vmcs12 ) ; case EXIT_REASON_DR_ACCESS : return nested_cpu_has ( vmcs12 , CPU_BASED_MOV_DR_EXITING ) ; case EXIT_REASON_IO_INSTRUCTION : return nested_vmx_exit_handled_io ( vcpu , vmcs12 ) ; case EXIT_REASON_MSR_READ : case EXIT_REASON_MSR_WRITE : return nested_vmx_exit_handled_msr ( vcpu , vmcs12 , exit_reason ) ; case EXIT_REASON_INVALID_STATE : return 1 ; case EXIT_REASON_MWAIT_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_MWAIT_EXITING ) ; case EXIT_REASON_MONITOR_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_MONITOR_EXITING ) ; case EXIT_REASON_PAUSE_INSTRUCTION : return nested_cpu_has ( vmcs12 , CPU_BASED_PAUSE_EXITING ) || nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_PAUSE_LOOP_EXITING ) ; case EXIT_REASON_MCE_DURING_VMENTRY : return 0 ; case EXIT_REASON_TPR_BELOW_THRESHOLD : return 1 ; case EXIT_REASON_APIC_ACCESS : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES ) ; case EXIT_REASON_EPT_VIOLATION : case EXIT_REASON_EPT_MISCONFIG : return 0 ; case EXIT_REASON_PREEMPTION_TIMER : return vmcs12 -> pin_based_vm_exec_control & PIN_BASED_VMX_PREEMPTION_TIMER ; case EXIT_REASON_WBINVD : return nested_cpu_has2 ( vmcs12 , SECONDARY_EXEC_WBINVD_EXITING ) ; case EXIT_REASON_XSETBV : return 1 ; default : return 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case EXIT_REASON_VMON : case EXIT_REASON_INVEPT :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3741\n\n```\nCWE-20 WORD32 ih264d_parse_decode_slice ( UWORD8 u1_is_idr_slice , UWORD8 u1_nal_ref_idc , dec_struct_t * ps_dec ) { dec_bit_stream_t * ps_bitstrm = ps_dec -> ps_bitstrm ; dec_pic_params_t * ps_pps ; dec_seq_params_t * ps_seq ; dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; pocstruct_t s_tmp_poc ; WORD32 i_delta_poc [ 2 ] ; WORD32 i4_poc = 0 ; UWORD16 u2_first_mb_in_slice , u2_frame_num ; UWORD8 u1_field_pic_flag , u1_redundant_pic_cnt = 0 , u1_slice_type ; UWORD32 u4_idr_pic_id = 0 ; UWORD8 u1_bottom_field_flag , u1_pic_order_cnt_type ; UWORD8 u1_nal_unit_type ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; WORD8 i1_is_end_of_poc ; WORD32 ret , end_of_frame ; WORD32 prev_slice_err , num_mb_skipped ; UWORD8 u1_mbaff ; pocstruct_t * ps_cur_poc ; UWORD32 u4_temp ; WORD32 i_temp ; UWORD32 u4_call_end_of_pic = 0 ; ps_dec -> ps_dpb_cmds -> u1_dpb_commands_read_slc = 0 ; u2_first_mb_in_slice = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u2_first_mb_in_slice > ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) ) { return ERROR_CORRUPTED_SLICE ; } if ( ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) <= ps_dec -> u2_cur_mb_addr ) && ( ps_dec -> u2_cur_mb_addr != 0 ) && ( ps_dec -> u4_first_slice_in_pic != 0 ) ) { return ERROR_CORRUPTED_SLICE ; } COPYTHECONTEXT ( \"SH:<S2SV_blank>first_mb_in_slice\" , u2_first_mb_in_slice ) ; u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > 9 ) return ERROR_INV_SLC_TYPE_T ; u1_slice_type = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>slice_type\" , ( u1_slice_type ) ) ; ps_dec -> u1_sl_typ_5_9 = 0 ; if ( u1_slice_type > 4 ) { u1_slice_type -= 5 ; ps_dec -> u1_sl_typ_5_9 = 1 ; } { UWORD32 skip ; if ( ( ps_dec -> i4_app_skip_mode == IVD_SKIP_PB ) || ( ps_dec -> i4_dec_skip_mode == IVD_SKIP_PB ) ) { UWORD32 u4_bit_stream_offset = 0 ; if ( ps_dec -> u1_nal_unit_type == IDR_SLICE_NAL ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else if ( ( I_SLICE == u1_slice_type ) && ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) ) { skip = 0 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_NONE ; } else { skip = 1 ; } if ( ( 0 == u2_first_mb_in_slice ) && ( 1 == ps_dec -> u4_prev_nal_skipped ) ) { skip = 0 ; } if ( skip ) { ps_dec -> u4_prev_nal_skipped = 1 ; ps_dec -> i4_dec_skip_mode = IVD_SKIP_PB ; return 0 ; } else { if ( 1 == ps_dec -> u4_prev_nal_skipped ) { ps_dec -> u4_return_to_app = 1 ; return 0 ; } } } } u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp & MASK_ERR_PIC_SET_ID ) return ERROR_INV_SPS_PPS_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_parameter_set_id\" , u4_temp ) ; ps_pps = & ps_dec -> ps_pps [ u4_temp ] ; if ( FALSE == ps_pps -> u1_is_valid ) { return ERROR_INV_SPS_PPS_T ; } ps_seq = ps_pps -> ps_sps ; if ( ! ps_seq ) return ERROR_INV_SPS_PPS_T ; if ( FALSE == ps_seq -> u1_is_valid ) return ERROR_INV_SPS_PPS_T ; u2_frame_num = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_bits_in_frm_num ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>frame_num\" , u2_frame_num ) ; if ( ! ps_seq -> u1_frame_mbs_only_flag ) { u1_field_pic_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>field_pic_flag\" , u1_field_pic_flag ) ; u1_bottom_field_flag = 0 ; if ( u1_field_pic_flag ) { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan_fld ; u1_bottom_field_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>bottom_field_flag\" , u1_bottom_field_flag ) ; } else { ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } } else { u1_field_pic_flag = 0 ; u1_bottom_field_flag = 0 ; ps_dec -> pu1_inv_scan = ( UWORD8 * ) gau1_ih264d_inv_scan ; } u1_nal_unit_type = SLICE_NAL ; if ( u1_is_idr_slice ) { if ( 0 == u1_field_pic_flag ) { ps_dec -> u1_top_bottom_decoded = TOP_FIELD_ONLY | BOT_FIELD_ONLY ; } u1_nal_unit_type = IDR_SLICE_NAL ; u4_idr_pic_id = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_idr_pic_id > 65535 ) return ERROR_INV_SPS_PPS_T ; COPYTHECONTEXT ( \"SH:<S2SV_blank><S2SV_blank>\" , u4_idr_pic_id ) ; } i_delta_poc [ 0 ] = i_delta_poc [ 1 ] = 0 ; s_tmp_poc . i4_pic_order_cnt_lsb = 0 ; s_tmp_poc . i4_delta_pic_order_cnt_bottom = 0 ; u1_pic_order_cnt_type = ps_seq -> u1_pic_order_cnt_type ; if ( u1_pic_order_cnt_type == 0 ) { i_temp = ih264d_get_bits_h264 ( ps_bitstrm , ps_seq -> u1_log2_max_pic_order_cnt_lsb_minus ) ; if ( i_temp < 0 || i_temp >= ps_seq -> i4_max_pic_order_cntLsb ) return ERROR_INV_SPS_PPS_T ; s_tmp_poc . i4_pic_order_cnt_lsb = i_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>pic_order_cnt_lsb\" , s_tmp_poc . i4_pic_order_cnt_lsb ) ; if ( ( ps_pps -> u1_pic_order_present_flag == 1 ) && ( ! u1_field_pic_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt_bottom = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt_bottom\" , s_tmp_poc . i4_delta_pic_order_cnt_bottom ) ; } } s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = 0 ; s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = 0 ; if ( u1_pic_order_cnt_type == 1 && ( ! ps_seq -> u1_delta_pic_order_always_zero_flag ) ) { s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[0]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 0 ] ) ; if ( ps_pps -> u1_pic_order_present_flag && ! u1_field_pic_flag ) { s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] = ih264d_sev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>delta_pic_order_cnt[1]\" , s_tmp_poc . i4_delta_pic_order_cnt [ 1 ] ) ; } } if ( ps_pps -> u1_redundant_pic_cnt_present_flag ) { u4_temp = ih264d_uev ( pu4_bitstrm_ofst , pu4_bitstrm_buf ) ; if ( u4_temp > MAX_REDUNDANT_PIC_CNT ) return ERROR_INV_SPS_PPS_T ; u1_redundant_pic_cnt = u4_temp ; COPYTHECONTEXT ( \"SH:<S2SV_blank>redundant_pic_cnt\" , u1_redundant_pic_cnt ) ; } i1_is_end_of_poc = 0 ; if ( ! ps_dec -> u1_first_slice_in_stream ) { i1_is_end_of_poc = ih264d_is_end_of_pic ( u2_frame_num , u1_nal_ref_idc , & s_tmp_poc , & ps_dec -> s_cur_pic_poc , ps_cur_slice , u1_pic_order_cnt_type , u1_nal_unit_type , u4_idr_pic_id , u1_field_pic_flag , u1_bottom_field_flag ) ; if ( ( ps_dec -> u4_first_slice_in_pic == 2 ) && ( i1_is_end_of_poc == 0 ) ) { ps_dec -> ps_dec_err_status -> u1_err_flag |= REJECT_CUR_PIC ; i1_is_end_of_poc = 1 ; } else { ps_dec -> ps_dec_err_status -> u1_err_flag &= MASK_REJECT_CUR_PIC ; } } u1_mbaff = ps_seq -> u1_mb_aff_flag && ( ! u1_field_pic_flag ) ; prev_slice_err = 0 ; if ( i1_is_end_of_poc || ps_dec -> u1_first_slice_in_stream ) { if ( u2_frame_num != ps_dec -> u2_prv_frame_num && ps_dec -> u1_top_bottom_decoded != 0 && ps_dec -> u1_top_bottom_decoded != ( TOP_FIELD_ONLY | BOT_FIELD_ONLY ) ) { ps_dec -> u1_dangling_field = 1 ; if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; } else { prev_slice_err = 2 ; } if ( ps_dec -> u1_top_bottom_decoded == TOP_FIELD_ONLY ) ps_cur_slice -> u1_bottom_field_flag = 1 ; else ps_cur_slice -> u1_bottom_field_flag = 0 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & ps_dec -> s_cur_pic_poc ; u1_is_idr_slice = ps_cur_slice -> u1_nal_unit_type == IDR_SLICE_NAL ; } else if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice > 0 ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; ps_cur_poc = & s_tmp_poc ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; } } else { if ( ps_dec -> u4_first_slice_in_pic ) { prev_slice_err = 1 ; num_mb_skipped = u2_first_mb_in_slice << u1_mbaff ; } else { prev_slice_err = 2 ; num_mb_skipped = ( ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) - ps_dec -> u2_total_mbs_coded ; } ps_cur_poc = & s_tmp_poc ; } } else { if ( ( u2_first_mb_in_slice << u1_mbaff ) > ps_dec -> u2_total_mbs_coded ) { prev_slice_err = 2 ; num_mb_skipped = ( u2_first_mb_in_slice << u1_mbaff ) - ps_dec -> u2_total_mbs_coded ; ps_cur_poc = & s_tmp_poc ; } else if ( ( u2_first_mb_in_slice << u1_mbaff ) < ps_dec -> u2_total_mbs_coded ) { return ERROR_CORRUPTED_SLICE ; } } if ( prev_slice_err ) { ret = ih264d_mark_err_slice_skip ( ps_dec , num_mb_skipped , u1_is_idr_slice , u2_frame_num , ps_cur_poc , prev_slice_err ) ; if ( ps_dec -> u1_dangling_field == 1 ) { ps_dec -> u1_second_field = 1 - ps_dec -> u1_second_field ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_dec -> u2_prv_frame_num = u2_frame_num ; ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_DANGLING_FIELD_IN_PIC ; } if ( prev_slice_err == 2 ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_INCOMPLETE_FRAME ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_first_slice_in_stream = 0 ; return ERROR_IN_LAST_SLICE_OF_PIC ; } if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } if ( ret != OK ) return ret ; i1_is_end_of_poc = 0 ; } if ( ps_dec -> u4_first_slice_in_pic == 0 ) ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u1_slice_header_done = 0 ; if ( ! ps_dec -> u1_first_slice_in_stream ) { UWORD8 uc_mbs_exceed = 0 ; if ( ps_dec -> u2_total_mbs_coded == ( ps_dec -> ps_cur_sps -> u2_max_mb_addr + 1 ) ) { if ( ps_dec -> u4_first_slice_in_pic == 0 ) uc_mbs_exceed = 1 ; } if ( i1_is_end_of_poc || uc_mbs_exceed ) { if ( 1 == ps_dec -> u1_last_pic_not_decoded ) { ret = ih264d_end_of_pic_dispbuf_mgr ( ps_dec ) ; if ( ret != OK ) return ret ; ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; # if WIN32 H264_DEC_DEBUG_PRINT ( \"<S2SV_blank>------<S2SV_blank>PIC<S2SV_blank>SKIPPED<S2SV_blank>------\\\\n\" ) ; # endif return RET_LAST_SKIP ; } else { ret = ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , u2_frame_num ) ; if ( ret != OK ) return ret ; } } } if ( u1_field_pic_flag ) { ps_dec -> u2_prv_frame_num = u2_frame_num ; } if ( ps_cur_slice -> u1_mmco_equalto5 ) { WORD32 i4_temp_poc ; WORD32 i4_top_field_order_poc , i4_bot_field_order_poc ; if ( ! ps_cur_slice -> u1_field_pic_flag ) { i4_top_field_order_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; i4_bot_field_order_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; i4_temp_poc = MIN ( i4_top_field_order_poc , i4_bot_field_order_poc ) ; } else if ( ! ps_cur_slice -> u1_bottom_field_flag ) i4_temp_poc = ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; else i4_temp_poc = ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_top_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_top_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt = i4_temp_poc - ps_dec -> ps_cur_pic -> i4_bottom_field_order_cnt ; ps_dec -> ps_cur_pic -> i4_poc = i4_temp_poc ; ps_dec -> ps_cur_pic -> i4_avg_poc = i4_temp_poc ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { ret = ih264d_decode_pic_order_cnt ( u1_is_idr_slice , u2_frame_num , & ps_dec -> s_prev_pic_poc , & s_tmp_poc , ps_cur_slice , ps_pps , u1_nal_ref_idc , u1_bottom_field_flag , u1_field_pic_flag , & i4_poc ) ; if ( ret != OK ) return ret ; if ( i4_poc >= ps_dec -> i4_max_poc ) ps_dec -> i4_max_poc = i4_poc ; if ( i4_poc == 0 ) { ps_dec -> i4_prev_max_display_seq = ps_dec -> i4_prev_max_display_seq + ps_dec -> i4_max_poc + ps_dec -> u1_max_dec_frame_buffering + 1 ; ps_dec -> i4_max_poc = 0 ; } } ps_cur_slice -> i4_delta_pic_order_cnt [ 0 ] = i_delta_poc [ 0 ] ; ps_cur_slice -> i4_delta_pic_order_cnt [ 1 ] = i_delta_poc [ 1 ] ; ps_cur_slice -> u4_idr_pic_id = u4_idr_pic_id ; ps_cur_slice -> u2_first_mb_in_slice = u2_first_mb_in_slice ; ps_cur_slice -> u1_field_pic_flag = u1_field_pic_flag ; ps_cur_slice -> u1_bottom_field_flag = u1_bottom_field_flag ; ps_cur_slice -> u1_slice_type = u1_slice_type ; ps_cur_slice -> i4_pic_order_cnt_lsb = s_tmp_poc . i4_pic_order_cnt_lsb ; ps_cur_slice -> u1_nal_unit_type = u1_nal_unit_type ; ps_cur_slice -> u1_redundant_pic_cnt = u1_redundant_pic_cnt ; ps_cur_slice -> u1_nal_ref_idc = u1_nal_ref_idc ; ps_cur_slice -> u1_pic_order_cnt_type = u1_pic_order_cnt_type ; if ( ps_seq -> u1_frame_mbs_only_flag ) ps_cur_slice -> u1_direct_8x8_inference_flag = ps_seq -> u1_direct_8x8_inference_flag ; else ps_cur_slice -> u1_direct_8x8_inference_flag = 1 ; if ( u1_slice_type == B_SLICE ) { ps_cur_slice -> u1_direct_spatial_mv_pred_flag = ih264d_get_bit_h264 ( ps_bitstrm ) ; COPYTHECONTEXT ( \"SH:<S2SV_blank>direct_spatial_mv_pred_flag\" , ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ; if ( ps_cur_slice -> u1_direct_spatial_mv_pred_flag ) ps_cur_slice -> pf_decodeDirect = ih264d_decode_spatial_direct ; else ps_cur_slice -> pf_decodeDirect = ih264d_decode_temporal_direct ; if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaffB ; } else { if ( ! ( ( ps_pps -> ps_sps -> u1_mb_aff_flag ) && ( ! u1_field_pic_flag ) ) ) ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; } if ( ps_dec -> u4_first_slice_in_pic == 2 ) { if ( u2_first_mb_in_slice == 0 ) { ret = ih264d_start_of_pic ( ps_dec , i4_poc , & s_tmp_poc , u2_frame_num , ps_pps ) ; if ( ret != OK ) return ret ; } ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } { UWORD8 uc_nofield_nombaff ; uc_nofield_nombaff = ( ( ps_dec -> ps_cur_slice -> u1_field_pic_flag == 0 ) && ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag == 0 ) && ( u1_slice_type != B_SLICE ) && ( ps_dec -> ps_cur_pps -> u1_wted_pred_flag == 0 ) ) ; if ( uc_nofield_nombaff ) { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; } else { ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_mp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_mp ; } } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u4_frm_sei_sync == u2_frame_num ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; ps_err -> u4_frm_sei_sync = SYNC_FRM_DEFAULT ; } ps_err -> u4_cur_frm = u2_frame_num ; } { WORD32 i4_skip_b_pic , i4_skip_p_pic ; i4_skip_b_pic = ( ps_dec -> u4_skip_frm_mask & B_SLC_BIT ) && ( B_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; i4_skip_p_pic = ( ps_dec -> u4_skip_frm_mask & P_SLC_BIT ) && ( P_SLICE == u1_slice_type ) && ( 0 == u1_nal_ref_idc ) ; if ( i4_skip_b_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } if ( i4_skip_p_pic ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ps_dec -> u1_last_pic_not_decoded = 1 ; return OK ; } } { UWORD16 u2_mb_x , u2_mb_y ; ps_dec -> i4_submb_ofst = ( ( u2_first_mb_in_slice << ps_cur_slice -> u1_mbaff_frame_flag ) * SUB_BLK_SIZE ) - SUB_BLK_SIZE ; if ( u2_first_mb_in_slice ) { UWORD8 u1_mb_aff ; UWORD8 u1_field_pic ; UWORD16 u2_frm_wd_in_mbs ; u2_frm_wd_in_mbs = ps_seq -> u2_frm_wd_in_mbs ; u1_mb_aff = ps_cur_slice -> u1_mbaff_frame_flag ; u1_field_pic = ps_cur_slice -> u1_field_pic_flag ; { UWORD32 x_offset ; UWORD32 y_offset ; UWORD32 u4_frame_stride ; tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = MOD ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y = DIV ( u2_first_mb_in_slice , u2_frm_wd_in_mbs ) ; u2_mb_y <<= u1_mb_aff ; if ( ( u2_mb_x > u2_frm_wd_in_mbs - 1 ) || ( u2_mb_y > ps_dec -> u2_frm_ht_in_mbs - 1 ) ) { return ERROR_CORRUPTED_SLICE ; } u4_frame_stride = ps_dec -> u2_frm_wd_y << u1_field_pic ; x_offset = u2_mb_x << 4 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 4 ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 + x_offset + y_offset ; u4_frame_stride = ps_dec -> u2_frm_wd_uv << u1_field_pic ; x_offset >>= 1 ; y_offset = ( u2_mb_y * u4_frame_stride ) << 3 ; x_offset *= YUV420SP_FACTOR ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 + x_offset + y_offset ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 + x_offset + y_offset ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; if ( ps_dec -> u1_separate_parse == 1 ) { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } else { ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic + ( u2_first_mb_in_slice << u1_mb_aff ) ; } ps_dec -> u2_cur_mb_addr = ( u2_first_mb_in_slice << u1_mb_aff ) ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv + ( ( u2_first_mb_in_slice << u1_mb_aff ) << 4 ) ; } } else { tfr_ctxt_t * ps_trns_addr ; if ( ps_dec -> u1_separate_parse ) { ps_trns_addr = & ps_dec -> s_tran_addrecon_parse ; } else { ps_trns_addr = & ps_dec -> s_tran_addrecon ; } u2_mb_x = 0xffff ; u2_mb_y = 0 ; ps_dec -> u2_cur_mb_addr = 0 ; ps_dec -> ps_deblk_mbn = ps_dec -> ps_deblk_pic ; ps_dec -> ps_mv_cur = ps_dec -> s_cur_pic . ps_mv ; ps_trns_addr -> pu1_dest_y = ps_dec -> s_cur_pic . pu1_buf1 ; ps_trns_addr -> pu1_dest_u = ps_dec -> s_cur_pic . pu1_buf2 ; ps_trns_addr -> pu1_dest_v = ps_dec -> s_cur_pic . pu1_buf3 ; ps_trns_addr -> pu1_mb_y = ps_trns_addr -> pu1_dest_y ; ps_trns_addr -> pu1_mb_u = ps_trns_addr -> pu1_dest_u ; ps_trns_addr -> pu1_mb_v = ps_trns_addr -> pu1_dest_v ; } ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( u2_first_mb_in_slice - 1 , ps_seq -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= ps_cur_slice -> u1_mbaff_frame_flag ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; } ps_bitstrm -> u4_max_ofst += ps_dec -> ps_cur_pps -> u1_entropy_coding_mode ; ps_dec -> u1_B = ( u1_slice_type == B_SLICE ) ; ps_dec -> u4_next_mb_skip = 0 ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> ps_cur_slice -> u2_first_mb_in_slice ; ps_dec -> ps_parse_cur_slice -> slice_type = ps_dec -> ps_cur_slice -> u1_slice_type ; ps_dec -> u4_start_recon_deblk = 1 ; { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MAX_FRAMES ; if ( ( 1 >= ps_dec -> ps_cur_sps -> u1_num_ref_frames ) && ( 0 == ps_dec -> i4_display_delay ) ) { num_entries = 1 ; } num_entries = ( ( 2 * num_entries ) + 1 ) ; if ( BASE_PROFILE_IDC != ps_dec -> ps_cur_sps -> u1_profile_idc ) { num_entries *= 2 ; } size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( void * ) pu1_buf ; } if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } <S2SV_StartBug> ps_dec -> pu4_wt_ofsts = ps_dec -> pu4_wts_ofsts_mat ; <S2SV_EndBug> if ( u1_slice_type == I_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= I_SLC_BIT ; ret = ih264d_parse_islice ( ps_dec , u2_first_mb_in_slice ) ; if ( ps_dec -> i4_pic_type != B_SLICE && ps_dec -> i4_pic_type != P_SLICE ) ps_dec -> i4_pic_type = I_SLICE ; } else if ( u1_slice_type == P_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= P_SLC_BIT ; ret = ih264d_parse_pslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; if ( ps_dec -> i4_pic_type != B_SLICE ) ps_dec -> i4_pic_type = P_SLICE ; } else if ( u1_slice_type == B_SLICE ) { ps_dec -> ps_cur_pic -> u4_pack_slc_typ |= B_SLC_BIT ; ret = ih264d_parse_bslice ( ps_dec , u2_first_mb_in_slice ) ; ps_dec -> u1_pr_sl_type = u1_slice_type ; ps_dec -> i4_pic_type = B_SLICE ; } else return ERROR_INV_SLC_TYPE_T ; if ( ps_dec -> u1_slice_header_done ) { ps_dec -> u4_first_slice_in_pic = 0 ; ps_dec -> u1_first_slice_in_stream = 0 ; } if ( ret != OK ) return ret ; ps_dec -> u2_cur_slice_num ++ ; ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ( ps_seq -> u2_max_mb_addr + 1 ) ) { ps_dec -> u1_pic_decode_done = 1 ; } { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ( ps_err -> u1_err_flag & REJECT_PB_PICS ) && ( ps_err -> u1_cur_pic_type == PIC_TYPE_I ) ) { ps_err -> u1_err_flag = ACCEPT_ALL_PICS ; } } PRINT_BIN_BIT_RATIO ( ps_dec ) return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pv_parse_tu_coeff_data ; } <S2SV_ModEnd> if ( u1_slice_type\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3062\n\n```\nCWE-119 static int mov_read_dref ( MOVContext * c , AVIOContext * pb , MOVAtom atom ) { AVStream * st ; MOVStreamContext * sc ; int entries , i , j ; if ( c -> fc -> nb_streams < 1 ) return 0 ; st = c -> fc -> streams [ c -> fc -> nb_streams - 1 ] ; sc = st -> priv_data ; avio_rb32 ( pb ) ; entries = avio_rb32 ( pb ) ; if ( entries >= UINT_MAX / sizeof ( * sc -> drefs ) ) return AVERROR_INVALIDDATA ; av_free ( sc -> drefs ) ; <S2SV_StartBug> sc -> drefs = av_mallocz ( entries * sizeof ( * sc -> drefs ) ) ; <S2SV_EndBug> if ( ! sc -> drefs ) return AVERROR ( ENOMEM ) ; sc -> drefs_count = entries ; for ( i = 0 ; i < sc -> drefs_count ; i ++ ) { MOVDref * dref = & sc -> drefs [ i ] ; uint32_t size = avio_rb32 ( pb ) ; int64_t next = avio_tell ( pb ) + size - 4 ; if ( size < 12 ) return AVERROR_INVALIDDATA ; dref -> type = avio_rl32 ( pb ) ; avio_rb32 ( pb ) ; av_dlog ( c -> fc , \"type<S2SV_blank>%.4s<S2SV_blank>size<S2SV_blank>%d\\\\n\" , ( char * ) & dref -> type , size ) ; if ( dref -> type == MKTAG ( 'a' , 'l' , 'i' , 's' ) && size > 150 ) { uint16_t volume_len , len ; int16_t type ; avio_skip ( pb , 10 ) ; volume_len = avio_r8 ( pb ) ; volume_len = FFMIN ( volume_len , 27 ) ; avio_read ( pb , dref -> volume , 27 ) ; dref -> volume [ volume_len ] = 0 ; av_log ( c -> fc , AV_LOG_DEBUG , \"volume<S2SV_blank>%s,<S2SV_blank>len<S2SV_blank>%d\\\\n\" , dref -> volume , volume_len ) ; avio_skip ( pb , 12 ) ; len = avio_r8 ( pb ) ; len = FFMIN ( len , 63 ) ; avio_read ( pb , dref -> filename , 63 ) ; dref -> filename [ len ] = 0 ; av_log ( c -> fc , AV_LOG_DEBUG , \"filename<S2SV_blank>%s,<S2SV_blank>len<S2SV_blank>%d\\\\n\" , dref -> filename , len ) ; avio_skip ( pb , 16 ) ; dref -> nlvl_from = avio_rb16 ( pb ) ; dref -> nlvl_to = avio_rb16 ( pb ) ; av_log ( c -> fc , AV_LOG_DEBUG , \"nlvl<S2SV_blank>from<S2SV_blank>%d,<S2SV_blank>nlvl<S2SV_blank>to<S2SV_blank>%d\\\\n\" , dref -> nlvl_from , dref -> nlvl_to ) ; avio_skip ( pb , 16 ) ; for ( type = 0 ; type != - 1 && avio_tell ( pb ) < next ; ) { if ( url_feof ( pb ) ) return AVERROR_EOF ; type = avio_rb16 ( pb ) ; len = avio_rb16 ( pb ) ; av_log ( c -> fc , AV_LOG_DEBUG , \"type<S2SV_blank>%d,<S2SV_blank>len<S2SV_blank>%d\\\\n\" , type , len ) ; if ( len & 1 ) len += 1 ; if ( type == 2 ) { av_free ( dref -> path ) ; dref -> path = av_mallocz ( len + 1 ) ; if ( ! dref -> path ) return AVERROR ( ENOMEM ) ; avio_read ( pb , dref -> path , len ) ; if ( len > volume_len && ! strncmp ( dref -> path , dref -> volume , volume_len ) ) { len -= volume_len ; memmove ( dref -> path , dref -> path + volume_len , len ) ; dref -> path [ len ] = 0 ; } for ( j = 0 ; j < len ; j ++ ) if ( dref -> path [ j ] == ':' ) dref -> path [ j ] = '/' ; av_log ( c -> fc , AV_LOG_DEBUG , \"path<S2SV_blank>%s\\\\n\" , dref -> path ) ; } else if ( type == 0 ) { av_free ( dref -> dir ) ; dref -> dir = av_malloc ( len + 1 ) ; if ( ! dref -> dir ) return AVERROR ( ENOMEM ) ; avio_read ( pb , dref -> dir , len ) ; dref -> dir [ len ] = 0 ; for ( j = 0 ; j < len ; j ++ ) if ( dref -> dir [ j ] == ':' ) dref -> dir [ j ] = '/' ; av_log ( c -> fc , AV_LOG_DEBUG , \"dir<S2SV_blank>%s\\\\n\" , dref -> dir ) ; } else avio_skip ( pb , len ) ; } } avio_seek ( pb , next , SEEK_SET ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sc -> drefs_count = 0 ; sc ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8mt_decode_mb_rows ( VP8D_COMP * pbi , MACROBLOCKD * xd ) { VP8_COMMON * pc = & pbi -> common ; unsigned int i ; int j ; int filter_level = pc -> filter_level ; YV12_BUFFER_CONFIG * yv12_fb_new = pbi -> dec_fb_ref [ INTRA_FRAME ] ; if ( filter_level ) { <S2SV_StartBug> vpx_memset ( pbi -> mt_yabove_row [ 0 ] + VP8BORDERINPIXELS - 1 , 127 , yv12_fb_new -> y_width + 5 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( pbi -> mt_uabove_row [ 0 ] + ( VP8BORDERINPIXELS >> 1 ) - 1 , 127 , ( yv12_fb_new -> y_width >> 1 ) + 5 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( pbi -> mt_vabove_row [ 0 ] + ( VP8BORDERINPIXELS >> 1 ) - 1 , 127 , ( yv12_fb_new -> y_width >> 1 ) + 5 ) ; <S2SV_EndBug> for ( j = 1 ; j < pc -> mb_rows ; j ++ ) { <S2SV_StartBug> vpx_memset ( pbi -> mt_yabove_row [ j ] + VP8BORDERINPIXELS - 1 , ( unsigned char ) 129 , 1 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( pbi -> mt_uabove_row [ j ] + ( VP8BORDERINPIXELS >> 1 ) - 1 , ( unsigned char ) 129 , 1 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( pbi -> mt_vabove_row [ j ] + ( VP8BORDERINPIXELS >> 1 ) - 1 , ( unsigned char ) 129 , 1 ) ; <S2SV_EndBug> } for ( j = 0 ; j < pc -> mb_rows ; j ++ ) { <S2SV_StartBug> vpx_memset ( pbi -> mt_yleft_col [ j ] , ( unsigned char ) 129 , 16 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( pbi -> mt_uleft_col [ j ] , ( unsigned char ) 129 , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( pbi -> mt_vleft_col [ j ] , ( unsigned char ) 129 , 8 ) ; <S2SV_EndBug> } vp8_loop_filter_frame_init ( pc , & pbi -> mb , filter_level ) ; } else vp8_setup_intra_recon_top_line ( yv12_fb_new ) ; setup_decoding_thread_data ( pbi , xd , pbi -> mb_row_di , pbi -> decoding_thread_count ) ; for ( i = 0 ; i < pbi -> decoding_thread_count ; i ++ ) sem_post ( & pbi -> h_event_start_decoding [ i ] ) ; mt_decode_mb_rows ( pbi , xd , 0 ) ; sem_wait ( & pbi -> h_event_end_decoding ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> filter_level ) { memset <S2SV_ModEnd> ( pbi -> <S2SV_ModStart> 5 ) ; memset <S2SV_ModEnd> ( pbi -> <S2SV_ModStart> 5 ) ; memset <S2SV_ModEnd> ( pbi -> <S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( pbi -> <S2SV_ModStart> 1 ) ; memset <S2SV_ModEnd> ( pbi -> <S2SV_ModStart> 1 ) ; memset <S2SV_ModEnd> ( pbi -> <S2SV_ModStart> ++ ) { memset <S2SV_ModEnd> ( pbi -> <S2SV_ModStart> 16 ) ; memset <S2SV_ModEnd> ( pbi -> <S2SV_ModStart> 8 ) ; memset <S2SV_ModEnd> ( pbi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7411\n\n```\nCWE-119 static inline int object_common2 ( UNSERIALIZE_PARAMETER , long elements ) { zval * retval_ptr = NULL ; zval fname ; if ( Z_TYPE_PP ( rval ) != IS_OBJECT ) { return 0 ; } if ( ! process_nested_data ( UNSERIALIZE_PASSTHRU , Z_OBJPROP_PP ( rval ) , elements , 1 ) ) { if ( Z_TYPE_PP ( rval ) == IS_OBJECT ) { zend_hash_clean ( Z_OBJPROP_PP ( rval ) ) ; <S2SV_StartBug> } <S2SV_EndBug> ZVAL_NULL ( * rval ) ; return 0 ; } if ( Z_TYPE_PP ( rval ) != IS_OBJECT ) { return 0 ; } if ( Z_OBJCE_PP ( rval ) != PHP_IC_ENTRY && zend_hash_exists ( & Z_OBJCE_PP ( rval ) -> function_table , \"__wakeup\" , sizeof ( \"__wakeup\" ) ) ) { INIT_PZVAL ( & fname ) ; ZVAL_STRINGL ( & fname , \"__wakeup\" , sizeof ( \"__wakeup\" ) - 1 , 0 ) ; BG ( serialize_lock ) ++ ; call_user_function_ex ( CG ( function_table ) , rval , & fname , & retval_ptr , 0 , 0 , 1 , NULL TSRMLS_CC ) ; BG ( serialize_lock ) -- ; } if ( retval_ptr ) { zval_ptr_dtor ( & retval_ptr ) ; } if ( EG ( exception ) ) { return 0 ; } return finish_nested_data ( UNSERIALIZE_PASSTHRU ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; zend_object_store_ctor_failed ( * rval TSRMLS_CC ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5923\n\n```\nCWE-125 int yyparse ( void * yyscanner , YR_COMPILER * compiler ) { int yychar ; YY_INITIAL_VALUE ( static YYSTYPE yyval_default ; ) YYSTYPE yylval YY_INITIAL_VALUE ( = yyval_default ) ; int yynerrs ; int yystate ; int yyerrstatus ; yytype_int16 yyssa [ YYINITDEPTH ] ; yytype_int16 * yyss ; yytype_int16 * yyssp ; YYSTYPE yyvsa [ YYINITDEPTH ] ; YYSTYPE * yyvs ; YYSTYPE * yyvsp ; YYSIZE_T yystacksize ; int yyn ; int yyresult ; int yytoken = 0 ; YYSTYPE yyval ; # if YYERROR_VERBOSE char yymsgbuf [ 128 ] ; char * yymsg = yymsgbuf ; YYSIZE_T yymsg_alloc = sizeof yymsgbuf ; # endif # define YYPOPSTACK ( N ) ( yyvsp -= ( N ) , yyssp -= ( N ) ) int yylen = 0 ; yyssp = yyss = yyssa ; yyvsp = yyvs = yyvsa ; yystacksize = YYINITDEPTH ; YYDPRINTF ( ( stderr , \"Starting<S2SV_blank>parse\\\\n\" ) ) ; yystate = 0 ; yyerrstatus = 0 ; yynerrs = 0 ; yychar = YYEMPTY ; goto yysetstate ; yynewstate : yyssp ++ ; yysetstate : * yyssp = yystate ; if ( yyss + yystacksize - 1 <= yyssp ) { YYSIZE_T yysize = yyssp - yyss + 1 ; # ifdef yyoverflow { YYSTYPE * yyvs1 = yyvs ; yytype_int16 * yyss1 = yyss ; yyoverflow ( YY_ ( \"memory<S2SV_blank>exhausted\" ) , & yyss1 , yysize * sizeof ( * yyssp ) , & yyvs1 , yysize * sizeof ( * yyvsp ) , & yystacksize ) ; yyss = yyss1 ; yyvs = yyvs1 ; } # else # ifndef YYSTACK_RELOCATE goto yyexhaustedlab ; # else if ( YYMAXDEPTH <= yystacksize ) goto yyexhaustedlab ; yystacksize *= 2 ; if ( YYMAXDEPTH < yystacksize ) yystacksize = YYMAXDEPTH ; { yytype_int16 * yyss1 = yyss ; union yyalloc * yyptr = ( union yyalloc * ) YYSTACK_ALLOC ( YYSTACK_BYTES ( yystacksize ) ) ; if ( ! yyptr ) goto yyexhaustedlab ; YYSTACK_RELOCATE ( yyss_alloc , yyss ) ; YYSTACK_RELOCATE ( yyvs_alloc , yyvs ) ; # undef YYSTACK_RELOCATE if ( yyss1 != yyssa ) YYSTACK_FREE ( yyss1 ) ; } # endif # endif yyssp = yyss + yysize - 1 ; yyvsp = yyvs + yysize - 1 ; YYDPRINTF ( ( stderr , \"Stack<S2SV_blank>size<S2SV_blank>increased<S2SV_blank>to<S2SV_blank>%lu\\\\n\" , ( unsigned long int ) yystacksize ) ) ; if ( yyss + yystacksize - 1 <= yyssp ) YYABORT ; } YYDPRINTF ( ( stderr , \"Entering<S2SV_blank>state<S2SV_blank>%d\\\\n\" , yystate ) ) ; if ( yystate == YYFINAL ) YYACCEPT ; goto yybackup ; yybackup : yyn = yypact [ yystate ] ; if ( yypact_value_is_default ( yyn ) ) goto yydefault ; if ( yychar == YYEMPTY ) { YYDPRINTF ( ( stderr , \"Reading<S2SV_blank>a<S2SV_blank>token:<S2SV_blank>\" ) ) ; yychar = yylex ( & yylval , yyscanner , compiler ) ; } if ( yychar <= YYEOF ) { yychar = yytoken = YYEOF ; YYDPRINTF ( ( stderr , \"Now<S2SV_blank>at<S2SV_blank>end<S2SV_blank>of<S2SV_blank>input.\\\\n\" ) ) ; } else { yytoken = YYTRANSLATE ( yychar ) ; YY_SYMBOL_PRINT ( \"Next<S2SV_blank>token<S2SV_blank>is\" , yytoken , & yylval , & yylloc ) ; } yyn += yytoken ; if ( yyn < 0 || YYLAST < yyn || yycheck [ yyn ] != yytoken ) goto yydefault ; yyn = yytable [ yyn ] ; if ( yyn <= 0 ) { if ( yytable_value_is_error ( yyn ) ) goto yyerrlab ; yyn = - yyn ; goto yyreduce ; } if ( yyerrstatus ) yyerrstatus -- ; YY_SYMBOL_PRINT ( \"Shifting\" , yytoken , & yylval , & yylloc ) ; yychar = YYEMPTY ; yystate = yyn ; YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN * ++ yyvsp = yylval ; YY_IGNORE_MAYBE_UNINITIALIZED_END goto yynewstate ; yydefault : yyn = yydefact [ yystate ] ; if ( yyn == 0 ) goto yyerrlab ; goto yyreduce ; yyreduce : yylen = yyr2 [ yyn ] ; yyval = yyvsp [ 1 - yylen ] ; YY_REDUCE_PRINT ( yyn ) ; switch ( yyn ) { case 8 : # line 230 \"grammar.y\" { int result = yr_parser_reduce_import ( yyscanner , ( yyvsp [ 0 ] . sized_string ) ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; ERROR_IF ( result != ERROR_SUCCESS ) ; } # line 1661 \"grammar.c\" break ; case 9 : # line 242 \"grammar.y\" { YR_RULE * rule = yr_parser_reduce_rule_declaration_phase_1 ( yyscanner , ( int32_t ) ( yyvsp [ - 2 ] . integer ) , ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( rule == NULL ) ; ( yyval . rule ) = rule ; } # line 1674 \"grammar.c\" break ; case 10 : # line 251 \"grammar.y\" { YR_RULE * rule = ( yyvsp [ - 4 ] . rule ) ; rule -> tags = ( yyvsp [ - 3 ] . c_string ) ; rule -> metas = ( yyvsp [ - 1 ] . meta ) ; rule -> strings = ( yyvsp [ 0 ] . string ) ; } # line 1686 \"grammar.c\" break ; case 11 : # line 259 \"grammar.y\" { YR_RULE * rule = ( yyvsp [ - 7 ] . rule ) ; compiler -> last_result = yr_parser_reduce_rule_declaration_phase_2 ( yyscanner , rule ) ; yr_free ( ( yyvsp [ - 8 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 1701 \"grammar.c\" break ; case 12 : # line 274 \"grammar.y\" { ( yyval . meta ) = NULL ; } # line 1709 \"grammar.c\" break ; case 13 : # line 278 \"grammar.y\" { YR_META null_meta ; memset ( & null_meta , 0xFF , sizeof ( YR_META ) ) ; null_meta . type = META_TYPE_NULL ; compiler -> last_result = yr_arena_write_data ( compiler -> metas_arena , & null_meta , sizeof ( YR_META ) , NULL ) ; ( yyval . meta ) = ( yyvsp [ 0 ] . meta ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 1736 \"grammar.c\" break ; case 14 : # line 305 \"grammar.y\" { ( yyval . string ) = NULL ; } # line 1744 \"grammar.c\" break ; case 15 : # line 309 \"grammar.y\" { YR_STRING null_string ; memset ( & null_string , 0xFF , sizeof ( YR_STRING ) ) ; null_string . g_flags = STRING_GFLAGS_NULL ; compiler -> last_result = yr_arena_write_data ( compiler -> strings_arena , & null_string , sizeof ( YR_STRING ) , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . string ) = ( yyvsp [ 0 ] . string ) ; } # line 1771 \"grammar.c\" break ; case 17 : # line 340 \"grammar.y\" { ( yyval . integer ) = 0 ; } # line 1777 \"grammar.c\" break ; case 18 : # line 341 \"grammar.y\" { ( yyval . integer ) = ( yyvsp [ - 1 ] . integer ) | ( yyvsp [ 0 ] . integer ) ; } # line 1783 \"grammar.c\" break ; case 19 : # line 346 \"grammar.y\" { ( yyval . integer ) = RULE_GFLAGS_PRIVATE ; } # line 1789 \"grammar.c\" break ; case 20 : # line 347 \"grammar.y\" { ( yyval . integer ) = RULE_GFLAGS_GLOBAL ; } # line 1795 \"grammar.c\" break ; case 21 : # line 353 \"grammar.y\" { ( yyval . c_string ) = NULL ; } # line 1803 \"grammar.c\" break ; case 22 : # line 357 \"grammar.y\" { compiler -> last_result = yr_arena_write_string ( yyget_extra ( yyscanner ) -> sz_arena , \"\" , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . c_string ) = ( yyvsp [ 0 ] . c_string ) ; } # line 1821 \"grammar.c\" break ; case 23 : # line 375 \"grammar.y\" { char * identifier ; compiler -> last_result = yr_arena_write_string ( yyget_extra ( yyscanner ) -> sz_arena , ( yyvsp [ 0 ] . c_string ) , & identifier ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . c_string ) = identifier ; } # line 1838 \"grammar.c\" break ; case 24 : # line 388 \"grammar.y\" { char * tag_name = ( yyvsp [ - 1 ] . c_string ) ; size_t tag_length = tag_name != NULL ? strlen ( tag_name ) : 0 ; while ( tag_length > 0 ) { if ( strcmp ( tag_name , ( yyvsp [ 0 ] . c_string ) ) == 0 ) { yr_compiler_set_error_extra_info ( compiler , tag_name ) ; compiler -> last_result = ERROR_DUPLICATED_TAG_IDENTIFIER ; break ; } tag_name = ( char * ) yr_arena_next_address ( yyget_extra ( yyscanner ) -> sz_arena , tag_name , tag_length + 1 ) ; tag_length = tag_name != NULL ? strlen ( tag_name ) : 0 ; } if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_arena_write_string ( yyget_extra ( yyscanner ) -> sz_arena , ( yyvsp [ 0 ] . c_string ) , NULL ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . c_string ) = ( yyvsp [ - 1 ] . c_string ) ; } # line 1874 \"grammar.c\" break ; case 25 : # line 424 \"grammar.y\" { ( yyval . meta ) = ( yyvsp [ 0 ] . meta ) ; } # line 1880 \"grammar.c\" break ; case 26 : # line 425 \"grammar.y\" { ( yyval . meta ) = ( yyvsp [ - 1 ] . meta ) ; } # line 1886 \"grammar.c\" break ; case 27 : # line 431 \"grammar.y\" { SIZED_STRING * sized_string = ( yyvsp [ 0 ] . sized_string ) ; ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_STRING , ( yyvsp [ - 2 ] . c_string ) , sized_string -> c_string , 0 ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1906 \"grammar.c\" break ; case 28 : # line 447 \"grammar.y\" { ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_INTEGER , ( yyvsp [ - 2 ] . c_string ) , NULL , ( yyvsp [ 0 ] . integer ) ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1923 \"grammar.c\" break ; case 29 : # line 460 \"grammar.y\" { ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_INTEGER , ( yyvsp [ - 3 ] . c_string ) , NULL , - ( yyvsp [ 0 ] . integer ) ) ; yr_free ( ( yyvsp [ - 3 ] . c_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1940 \"grammar.c\" break ; case 30 : # line 473 \"grammar.y\" { ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_BOOLEAN , ( yyvsp [ - 2 ] . c_string ) , NULL , TRUE ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1957 \"grammar.c\" break ; case 31 : # line 486 \"grammar.y\" { ( yyval . meta ) = yr_parser_reduce_meta_declaration ( yyscanner , META_TYPE_BOOLEAN , ( yyvsp [ - 2 ] . c_string ) , NULL , FALSE ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( ( yyval . meta ) == NULL ) ; } # line 1974 \"grammar.c\" break ; case 32 : # line 502 \"grammar.y\" { ( yyval . string ) = ( yyvsp [ 0 ] . string ) ; } # line 1980 \"grammar.c\" break ; case 33 : # line 503 \"grammar.y\" { ( yyval . string ) = ( yyvsp [ - 1 ] . string ) ; } # line 1986 \"grammar.c\" break ; case 34 : # line 509 \"grammar.y\" { compiler -> error_line = yyget_lineno ( yyscanner ) ; } # line 1994 \"grammar.c\" break ; case 35 : # line 513 \"grammar.y\" { ( yyval . string ) = yr_parser_reduce_string_declaration ( yyscanner , ( int32_t ) ( yyvsp [ 0 ] . integer ) , ( yyvsp [ - 4 ] . c_string ) , ( yyvsp [ - 1 ] . sized_string ) ) ; yr_free ( ( yyvsp [ - 4 ] . c_string ) ) ; yr_free ( ( yyvsp [ - 1 ] . sized_string ) ) ; ERROR_IF ( ( yyval . string ) == NULL ) ; compiler -> error_line = 0 ; } # line 2009 \"grammar.c\" break ; case 36 : # line 524 \"grammar.y\" { compiler -> error_line = yyget_lineno ( yyscanner ) ; } # line 2017 \"grammar.c\" break ; case 37 : # line 528 \"grammar.y\" { ( yyval . string ) = yr_parser_reduce_string_declaration ( yyscanner , ( int32_t ) ( yyvsp [ 0 ] . integer ) | STRING_GFLAGS_REGEXP , ( yyvsp [ - 4 ] . c_string ) , ( yyvsp [ - 1 ] . sized_string ) ) ; yr_free ( ( yyvsp [ - 4 ] . c_string ) ) ; yr_free ( ( yyvsp [ - 1 ] . sized_string ) ) ; ERROR_IF ( ( yyval . string ) == NULL ) ; compiler -> error_line = 0 ; } # line 2033 \"grammar.c\" break ; case 38 : # line 540 \"grammar.y\" { ( yyval . string ) = yr_parser_reduce_string_declaration ( yyscanner , STRING_GFLAGS_HEXADECIMAL , ( yyvsp [ - 2 ] . c_string ) , ( yyvsp [ 0 ] . sized_string ) ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; ERROR_IF ( ( yyval . string ) == NULL ) ; } # line 2047 \"grammar.c\" break ; case 39 : # line 553 \"grammar.y\" { ( yyval . integer ) = 0 ; } # line 2053 \"grammar.c\" break ; case 40 : # line 554 \"grammar.y\" { ( yyval . integer ) = ( yyvsp [ - 1 ] . integer ) | ( yyvsp [ 0 ] . integer ) ; } # line 2059 \"grammar.c\" break ; case 41 : # line 559 \"grammar.y\" { ( yyval . integer ) = STRING_GFLAGS_WIDE ; } # line 2065 \"grammar.c\" break ; case 42 : # line 560 \"grammar.y\" { ( yyval . integer ) = STRING_GFLAGS_ASCII ; } # line 2071 \"grammar.c\" break ; case 43 : # line 561 \"grammar.y\" { ( yyval . integer ) = STRING_GFLAGS_NO_CASE ; } # line 2077 \"grammar.c\" break ; case 44 : # line 562 \"grammar.y\" { ( yyval . integer ) = STRING_GFLAGS_FULL_WORD ; } # line 2083 \"grammar.c\" break ; case 45 : # line 568 \"grammar.y\" { int var_index = yr_parser_lookup_loop_variable ( yyscanner , ( yyvsp [ 0 ] . c_string ) ) ; if ( var_index >= 0 ) { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , LOOP_LOCAL_VARS * var_index , NULL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; ( yyval . expression ) . identifier = compiler -> loop_identifier [ var_index ] ; } else { YR_OBJECT * object = ( YR_OBJECT * ) yr_hash_table_lookup ( compiler -> objects_table , ( yyvsp [ 0 ] . c_string ) , NULL ) ; if ( object == NULL ) { char * ns = compiler -> current_namespace -> name ; object = ( YR_OBJECT * ) yr_hash_table_lookup ( compiler -> objects_table , ( yyvsp [ 0 ] . c_string ) , ns ) ; } if ( object != NULL ) { char * id ; compiler -> last_result = yr_arena_write_string ( compiler -> sz_arena , ( yyvsp [ 0 ] . c_string ) , & id ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_OBJ_LOAD , id , NULL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = object ; ( yyval . expression ) . identifier = object -> identifier ; } else { YR_RULE * rule = ( YR_RULE * ) yr_hash_table_lookup ( compiler -> rules_table , ( yyvsp [ 0 ] . c_string ) , compiler -> current_namespace -> name ) ; if ( rule != NULL ) { compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_PUSH_RULE , rule , NULL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; ( yyval . expression ) . value . integer = UNDEFINED ; ( yyval . expression ) . identifier = rule -> identifier ; } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ 0 ] . c_string ) ) ; compiler -> last_result = ERROR_UNDEFINED_IDENTIFIER ; } } } yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 2172 \"grammar.c\" break ; case 46 : # line 653 \"grammar.y\" { YR_OBJECT * field = NULL ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_OBJECT && ( yyvsp [ - 2 ] . expression ) . value . object -> type == OBJECT_TYPE_STRUCTURE ) { field = yr_object_lookup_field ( ( yyvsp [ - 2 ] . expression ) . value . object , ( yyvsp [ 0 ] . c_string ) ) ; if ( field != NULL ) { char * ident ; compiler -> last_result = yr_arena_write_string ( compiler -> sz_arena , ( yyvsp [ 0 ] . c_string ) , & ident ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_OBJ_FIELD , ident , NULL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = field ; ( yyval . expression ) . identifier = field -> identifier ; } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ 0 ] . c_string ) ) ; compiler -> last_result = ERROR_INVALID_FIELD_NAME ; } } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ - 2 ] . expression ) . identifier ) ; compiler -> last_result = ERROR_NOT_A_STRUCTURE ; } yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 2222 \"grammar.c\" break ; case 47 : # line 699 \"grammar.y\" { YR_OBJECT_ARRAY * array ; YR_OBJECT_DICTIONARY * dict ; if ( ( yyvsp [ - 3 ] . expression ) . type == EXPRESSION_TYPE_OBJECT && ( yyvsp [ - 3 ] . expression ) . value . object -> type == OBJECT_TYPE_ARRAY ) { if ( ( yyvsp [ - 1 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"array<S2SV_blank>indexes<S2SV_blank>must<S2SV_blank>be<S2SV_blank>of<S2SV_blank>integer<S2SV_blank>type\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_INDEX_ARRAY , NULL ) ; array = ( YR_OBJECT_ARRAY * ) ( yyvsp [ - 3 ] . expression ) . value . object ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = array -> prototype_item ; ( yyval . expression ) . identifier = array -> identifier ; } else if ( ( yyvsp [ - 3 ] . expression ) . type == EXPRESSION_TYPE_OBJECT && ( yyvsp [ - 3 ] . expression ) . value . object -> type == OBJECT_TYPE_DICTIONARY ) { if ( ( yyvsp [ - 1 ] . expression ) . type != EXPRESSION_TYPE_STRING ) { yr_compiler_set_error_extra_info ( compiler , \"dictionary<S2SV_blank>keys<S2SV_blank>must<S2SV_blank>be<S2SV_blank>of<S2SV_blank>string<S2SV_blank>type\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_LOOKUP_DICT , NULL ) ; dict = ( YR_OBJECT_DICTIONARY * ) ( yyvsp [ - 3 ] . expression ) . value . object ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = dict -> prototype_item ; ( yyval . expression ) . identifier = dict -> identifier ; } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ - 3 ] . expression ) . identifier ) ; compiler -> last_result = ERROR_NOT_INDEXABLE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 2283 \"grammar.c\" break ; case 48 : # line 757 \"grammar.y\" { YR_OBJECT_FUNCTION * function ; char * args_fmt ; if ( ( yyvsp [ - 3 ] . expression ) . type == EXPRESSION_TYPE_OBJECT && ( yyvsp [ - 3 ] . expression ) . value . object -> type == OBJECT_TYPE_FUNCTION ) { compiler -> last_result = yr_parser_check_types ( compiler , ( YR_OBJECT_FUNCTION * ) ( yyvsp [ - 3 ] . expression ) . value . object , ( yyvsp [ - 1 ] . c_string ) ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_arena_write_string ( compiler -> sz_arena , ( yyvsp [ - 1 ] . c_string ) , & args_fmt ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_CALL , args_fmt , NULL , NULL ) ; function = ( YR_OBJECT_FUNCTION * ) ( yyvsp [ - 3 ] . expression ) . value . object ; ( yyval . expression ) . type = EXPRESSION_TYPE_OBJECT ; ( yyval . expression ) . value . object = function -> return_obj ; ( yyval . expression ) . identifier = function -> identifier ; } else { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ - 3 ] . expression ) . identifier ) ; compiler -> last_result = ERROR_NOT_A_FUNCTION ; } yr_free ( ( yyvsp [ - 1 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } # line 2328 \"grammar.c\" break ; case 49 : # line 801 \"grammar.y\" { ( yyval . c_string ) = yr_strdup ( \"\" ) ; } # line 2334 \"grammar.c\" break ; case 50 : # line 802 \"grammar.y\" { ( yyval . c_string ) = ( yyvsp [ 0 ] . c_string ) ; } # line 2340 \"grammar.c\" break ; case 51 : # line 807 \"grammar.y\" { ( yyval . c_string ) = ( char * ) yr_malloc ( MAX_FUNCTION_ARGS + 1 ) ; switch ( ( yyvsp [ 0 ] . expression ) . type ) { case EXPRESSION_TYPE_INTEGER : strlcpy ( ( yyval . c_string ) , \"i\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_FLOAT : strlcpy ( ( yyval . c_string ) , \"f\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_BOOLEAN : strlcpy ( ( yyval . c_string ) , \"b\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_STRING : strlcpy ( ( yyval . c_string ) , \"s\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_REGEXP : strlcpy ( ( yyval . c_string ) , \"r\" , MAX_FUNCTION_ARGS ) ; break ; <S2SV_StartBug> } <S2SV_EndBug> ERROR_IF ( ( yyval . c_string ) == NULL ) ; } <S2SV_StartBug> # line 2369 \"grammar.c\" <S2SV_EndBug> break ; case 52 : <S2SV_StartBug> # line 832 \"grammar.y\" <S2SV_EndBug> { if ( strlen ( ( yyvsp [ - 2 ] . c_string ) ) == MAX_FUNCTION_ARGS ) { compiler -> last_result = ERROR_TOO_MANY_ARGUMENTS ; } else { switch ( ( yyvsp [ 0 ] . expression ) . type ) { case EXPRESSION_TYPE_INTEGER : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"i\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_FLOAT : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"f\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_BOOLEAN : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"b\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_STRING : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"s\" , MAX_FUNCTION_ARGS ) ; break ; case EXPRESSION_TYPE_REGEXP : strlcat ( ( yyvsp [ - 2 ] . c_string ) , \"r\" , MAX_FUNCTION_ARGS ) ; break ; <S2SV_StartBug> } <S2SV_EndBug> } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . c_string ) = ( yyvsp [ - 2 ] . c_string ) ; } <S2SV_StartBug> # line 2405 \"grammar.c\" <S2SV_EndBug> break ; case 53 : <S2SV_StartBug> # line 868 \"grammar.y\" <S2SV_EndBug> { SIZED_STRING * sized_string = ( yyvsp [ 0 ] . sized_string ) ; RE * re ; RE_ERROR error ; int re_flags = 0 ; if ( sized_string -> flags & SIZED_STRING_FLAGS_NO_CASE ) re_flags |= RE_FLAGS_NO_CASE ; if ( sized_string -> flags & SIZED_STRING_FLAGS_DOT_ALL ) re_flags |= RE_FLAGS_DOT_ALL ; compiler -> last_result = yr_re_compile ( sized_string -> c_string , re_flags , compiler -> re_code_arena , & re , & error ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; if ( compiler -> last_result == ERROR_INVALID_REGULAR_EXPRESSION ) yr_compiler_set_error_extra_info ( compiler , error . message ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_PUSH , re -> root_node -> forward_code , NULL , NULL ) ; yr_re_destroy ( re ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_REGEXP ; } <S2SV_StartBug> # line 2451 \"grammar.c\" <S2SV_EndBug> break ; case 54 : <S2SV_StartBug> # line 914 \"grammar.y\" <S2SV_EndBug> { if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_STRING ) { if ( ( yyvsp [ 0 ] . expression ) . value . sized_string != NULL ) { yywarning ( yyscanner , \"Using<S2SV_blank>literal<S2SV_blank>string<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>in<S2SV_blank>a<S2SV_blank>boolean<S2SV_blank>operation.\" , ( yyvsp [ 0 ] . expression ) . value . sized_string -> c_string ) ; } compiler -> last_result = yr_parser_emit ( yyscanner , OP_STR_TO_BOOL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2474 \"grammar.c\" <S2SV_EndBug> break ; case 55 : <S2SV_StartBug> # line 936 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2487 \"grammar.c\" <S2SV_EndBug> break ; case 56 : <S2SV_StartBug> # line 945 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 0 , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2500 \"grammar.c\" <S2SV_EndBug> break ; case 57 : <S2SV_StartBug> # line 954 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_STRING , \"matches\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_REGEXP , \"matches\" ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit ( yyscanner , OP_MATCHES , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2519 \"grammar.c\" <S2SV_EndBug> break ; case 58 : <S2SV_StartBug> # line 969 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_STRING , \"contains\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_STRING , \"contains\" ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_CONTAINS , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2535 \"grammar.c\" <S2SV_EndBug> break ; case 59 : <S2SV_StartBug> # line 981 \"grammar.y\" <S2SV_EndBug> { int result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ 0 ] . c_string ) , OP_FOUND , UNDEFINED ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2553 \"grammar.c\" <S2SV_EndBug> break ; case 60 : <S2SV_StartBug> # line 995 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"at\" ) ; compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ - 2 ] . c_string ) , OP_FOUND_AT , ( yyvsp [ 0 ] . expression ) . value . integer ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2570 \"grammar.c\" <S2SV_EndBug> break ; case 61 : <S2SV_StartBug> # line 1008 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ - 2 ] . c_string ) , OP_FOUND_IN , UNDEFINED ) ; yr_free ( ( yyvsp [ - 2 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2585 \"grammar.c\" <S2SV_EndBug> break ; case 62 : <S2SV_StartBug> # line 1019 \"grammar.y\" <S2SV_EndBug> { if ( compiler -> loop_depth > 0 ) { compiler -> loop_depth -- ; compiler -> loop_identifier [ compiler -> loop_depth ] = NULL ; } <S2SV_StartBug> } <S2SV_EndBug> # line 2597 \"grammar.c\" break ; case 63 : <S2SV_StartBug> # line 1027 \"grammar.y\" <S2SV_EndBug> { int var_index ; if ( compiler -> loop_depth == MAX_LOOP_NESTING ) compiler -> last_result = ERROR_LOOP_NESTING_LIMIT_EXCEEDED ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; var_index = yr_parser_lookup_loop_variable ( yyscanner , ( yyvsp [ - 1 ] . c_string ) ) ; if ( var_index >= 0 ) { yr_compiler_set_error_extra_info ( compiler , ( yyvsp [ - 1 ] . c_string ) ) ; compiler -> last_result = ERROR_DUPLICATED_LOOP_IDENTIFIER ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 2631 \"grammar.c\" <S2SV_EndBug> break ; case 64 : <S2SV_StartBug> # line 1057 \"grammar.y\" <S2SV_EndBug> { int mem_offset = LOOP_LOCAL_VARS * compiler -> loop_depth ; uint8_t * addr ; yr_parser_emit_with_arg ( yyscanner , OP_CLEAR_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_CLEAR_M , mem_offset + 2 , NULL , NULL ) ; if ( ( yyvsp [ - 1 ] . integer ) == INTEGER_SET_ENUMERATION ) { yr_parser_emit_with_arg ( yyscanner , OP_POP_M , mem_offset , & addr , NULL ) ; } else { yr_parser_emit_with_arg ( yyscanner , OP_POP_M , mem_offset + 3 , & addr , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_POP_M , mem_offset , NULL , NULL ) ; } compiler -> loop_address [ compiler -> loop_depth ] = addr ; compiler -> loop_identifier [ compiler -> loop_depth ] = ( yyvsp [ - 4 ] . c_string ) ; compiler -> loop_depth ++ ; } <S2SV_StartBug> # line 2670 \"grammar.c\" <S2SV_EndBug> break ; case 65 : <S2SV_StartBug> # line 1092 \"grammar.y\" <S2SV_EndBug> { int mem_offset ; compiler -> loop_depth -- ; mem_offset = LOOP_LOCAL_VARS * compiler -> loop_depth ; yr_parser_emit_with_arg ( yyscanner , OP_ADD_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_INCR_M , mem_offset + 2 , NULL , NULL ) ; if ( ( yyvsp [ - 5 ] . integer ) == INTEGER_SET_ENUMERATION ) { yr_parser_emit_with_arg_reloc ( yyscanner , OP_JNUNDEF , compiler -> loop_address [ compiler -> loop_depth ] , NULL , NULL ) ; } else { yr_parser_emit_with_arg ( yyscanner , OP_INCR_M , mem_offset , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , mem_offset , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , mem_offset + 3 , NULL , NULL ) ; yr_parser_emit_with_arg_reloc ( yyscanner , OP_JLE , compiler -> loop_address [ compiler -> loop_depth ] , NULL , NULL ) ; yr_parser_emit ( yyscanner , OP_POP , NULL ) ; yr_parser_emit ( yyscanner , OP_POP , NULL ) ; } yr_parser_emit ( yyscanner , OP_POP , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_SWAPUNDEF , mem_offset + 2 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit ( yyscanner , OP_INT_LE , NULL ) ; compiler -> loop_identifier [ compiler -> loop_depth ] = NULL ; yr_free ( ( yyvsp [ - 8 ] . c_string ) ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2753 \"grammar.c\" <S2SV_EndBug> break ; case 66 : <S2SV_StartBug> # line 1171 \"grammar.y\" <S2SV_EndBug> { int mem_offset = LOOP_LOCAL_VARS * compiler -> loop_depth ; uint8_t * addr ; if ( compiler -> loop_depth == MAX_LOOP_NESTING ) compiler -> last_result = ERROR_LOOP_NESTING_LIMIT_EXCEEDED ; if ( compiler -> loop_for_of_mem_offset != - 1 ) compiler -> last_result = ERROR_NESTED_FOR_OF_LOOP ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; yr_parser_emit_with_arg ( yyscanner , OP_CLEAR_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_CLEAR_M , mem_offset + 2 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_POP_M , mem_offset , & addr , NULL ) ; compiler -> loop_for_of_mem_offset = mem_offset ; compiler -> loop_address [ compiler -> loop_depth ] = addr ; compiler -> loop_identifier [ compiler -> loop_depth ] = NULL ; compiler -> loop_depth ++ ; } <S2SV_StartBug> # line 2787 \"grammar.c\" <S2SV_EndBug> break ; case 67 : <S2SV_StartBug> # line 1201 \"grammar.y\" <S2SV_EndBug> { int mem_offset ; compiler -> loop_depth -- ; compiler -> loop_for_of_mem_offset = - 1 ; mem_offset = LOOP_LOCAL_VARS * compiler -> loop_depth ; yr_parser_emit_with_arg ( yyscanner , OP_ADD_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_INCR_M , mem_offset + 2 , NULL , NULL ) ; yr_parser_emit_with_arg_reloc ( yyscanner , OP_JNUNDEF , compiler -> loop_address [ compiler -> loop_depth ] , NULL , NULL ) ; yr_parser_emit ( yyscanner , OP_POP , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_SWAPUNDEF , mem_offset + 2 , NULL , NULL ) ; yr_parser_emit_with_arg ( yyscanner , OP_PUSH_M , mem_offset + 1 , NULL , NULL ) ; yr_parser_emit ( yyscanner , OP_INT_LE , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2840 \"grammar.c\" <S2SV_EndBug> break ; case 68 : <S2SV_StartBug> # line 1250 \"grammar.y\" <S2SV_EndBug> { yr_parser_emit ( yyscanner , OP_OF , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2850 \"grammar.c\" <S2SV_EndBug> break ; case 69 : <S2SV_StartBug> # line 1256 \"grammar.y\" <S2SV_EndBug> { yr_parser_emit ( yyscanner , OP_NOT , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2860 \"grammar.c\" <S2SV_EndBug> break ; case 70 : <S2SV_StartBug> # line 1262 \"grammar.y\" <S2SV_EndBug> { YR_FIXUP * fixup ; void * jmp_destination_addr ; compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_JFALSE , 0 , NULL , & jmp_destination_addr ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup = ( YR_FIXUP * ) yr_malloc ( sizeof ( YR_FIXUP ) ) ; if ( fixup == NULL ) compiler -> last_error = ERROR_INSUFFICIENT_MEMORY ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup -> address = jmp_destination_addr ; fixup -> next = compiler -> fixup_stack_head ; compiler -> fixup_stack_head = fixup ; } <S2SV_StartBug> # line 2890 \"grammar.c\" <S2SV_EndBug> break ; case 71 : <S2SV_StartBug> # line 1288 \"grammar.y\" <S2SV_EndBug> { YR_FIXUP * fixup ; uint8_t * and_addr ; compiler -> last_result = yr_arena_reserve_memory ( compiler -> code_arena , 2 ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_AND , & and_addr ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup = compiler -> fixup_stack_head ; * ( void * * ) ( fixup -> address ) = ( void * ) ( and_addr + 1 ) ; compiler -> fixup_stack_head = fixup -> next ; yr_free ( fixup ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2930 \"grammar.c\" <S2SV_EndBug> break ; case 72 : <S2SV_StartBug> # line 1324 \"grammar.y\" <S2SV_EndBug> { YR_FIXUP * fixup ; void * jmp_destination_addr ; compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_JTRUE , 0 , NULL , & jmp_destination_addr ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup = ( YR_FIXUP * ) yr_malloc ( sizeof ( YR_FIXUP ) ) ; if ( fixup == NULL ) compiler -> last_error = ERROR_INSUFFICIENT_MEMORY ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup -> address = jmp_destination_addr ; fixup -> next = compiler -> fixup_stack_head ; compiler -> fixup_stack_head = fixup ; } <S2SV_StartBug> # line 2959 \"grammar.c\" <S2SV_EndBug> break ; case 73 : <S2SV_StartBug> # line 1349 \"grammar.y\" <S2SV_EndBug> { YR_FIXUP * fixup ; uint8_t * or_addr ; compiler -> last_result = yr_arena_reserve_memory ( compiler -> code_arena , 2 ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_OR , & or_addr ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; fixup = compiler -> fixup_stack_head ; * ( void * * ) ( fixup -> address ) = ( void * ) ( or_addr + 1 ) ; compiler -> fixup_stack_head = fixup -> next ; yr_free ( fixup ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 2999 \"grammar.c\" <S2SV_EndBug> break ; case 74 : <S2SV_StartBug> # line 1385 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"<\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3012 \"grammar.c\" <S2SV_EndBug> break ; case 75 : <S2SV_StartBug> # line 1394 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \">\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3025 \"grammar.c\" <S2SV_EndBug> break ; case 76 : <S2SV_StartBug> # line 1403 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"<=\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3038 \"grammar.c\" <S2SV_EndBug> break ; case 77 : <S2SV_StartBug> # line 1412 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \">=\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3051 \"grammar.c\" <S2SV_EndBug> break ; case 78 : <S2SV_StartBug> # line 1421 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"==\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3064 \"grammar.c\" <S2SV_EndBug> break ; case 79 : <S2SV_StartBug> # line 1430 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"!=\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; } <S2SV_StartBug> # line 3077 \"grammar.c\" <S2SV_EndBug> break ; case 80 : <S2SV_StartBug> # line 1439 \"grammar.y\" <S2SV_EndBug> { ( yyval . expression ) = ( yyvsp [ 0 ] . expression ) ; } <S2SV_StartBug> # line 3085 \"grammar.c\" <S2SV_EndBug> break ; case 81 : <S2SV_StartBug> # line 1443 \"grammar.y\" <S2SV_EndBug> { ( yyval . expression ) = ( yyvsp [ - 1 ] . expression ) ; } <S2SV_StartBug> # line 3093 \"grammar.c\" <S2SV_EndBug> break ; case 82 : <S2SV_StartBug> # line 1450 \"grammar.y\" <S2SV_EndBug> { ( yyval . integer ) = INTEGER_SET_ENUMERATION ; } <S2SV_StartBug> # line 3099 \"grammar.c\" <S2SV_EndBug> break ; case 83 : <S2SV_StartBug> # line 1451 \"grammar.y\" <S2SV_EndBug> { ( yyval . integer ) = INTEGER_SET_RANGE ; } <S2SV_StartBug> # line 3105 \"grammar.c\" <S2SV_EndBug> break ; case 84 : <S2SV_StartBug> # line 1457 \"grammar.y\" <S2SV_EndBug> { if ( ( yyvsp [ - 3 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"wrong<S2SV_blank>type<S2SV_blank>for<S2SV_blank>range\\'s<S2SV_blank>lower<S2SV_blank>bound\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } if ( ( yyvsp [ - 1 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"wrong<S2SV_blank>type<S2SV_blank>for<S2SV_blank>range\\'s<S2SV_blank>upper<S2SV_blank>bound\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3127 \"grammar.c\" <S2SV_EndBug> break ; case 85 : <S2SV_StartBug> # line 1479 \"grammar.y\" <S2SV_EndBug> { if ( ( yyvsp [ 0 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"wrong<S2SV_blank>type<S2SV_blank>for<S2SV_blank>enumeration<S2SV_blank>item\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3143 \"grammar.c\" <S2SV_EndBug> break ; case 86 : <S2SV_StartBug> # line 1491 \"grammar.y\" <S2SV_EndBug> { if ( ( yyvsp [ 0 ] . expression ) . type != EXPRESSION_TYPE_INTEGER ) { yr_compiler_set_error_extra_info ( compiler , \"wrong<S2SV_blank>type<S2SV_blank>for<S2SV_blank>enumeration<S2SV_blank>item\" ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3158 \"grammar.c\" <S2SV_EndBug> break ; case 87 : <S2SV_StartBug> # line 1506 \"grammar.y\" <S2SV_EndBug> { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; } <S2SV_StartBug> # line 3167 \"grammar.c\" <S2SV_EndBug> break ; case 89 : <S2SV_StartBug> # line 1512 \"grammar.y\" <S2SV_EndBug> { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; yr_parser_emit_pushes_for_strings ( yyscanner , \"$*\" ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3178 \"grammar.c\" <S2SV_EndBug> break ; case 92 : <S2SV_StartBug> # line 1529 \"grammar.y\" <S2SV_EndBug> { yr_parser_emit_pushes_for_strings ( yyscanner , ( yyvsp [ 0 ] . c_string ) ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3189 \"grammar.c\" <S2SV_EndBug> break ; case 93 : <S2SV_StartBug> # line 1536 \"grammar.y\" <S2SV_EndBug> { yr_parser_emit_pushes_for_strings ( yyscanner , ( yyvsp [ 0 ] . c_string ) ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3200 \"grammar.c\" <S2SV_EndBug> break ; case 95 : <S2SV_StartBug> # line 1548 \"grammar.y\" <S2SV_EndBug> { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , UNDEFINED , NULL , NULL ) ; } <S2SV_StartBug> # line 3208 \"grammar.c\" <S2SV_EndBug> break ; case 96 : <S2SV_StartBug> # line 1552 \"grammar.y\" <S2SV_EndBug> { yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; } <S2SV_StartBug> # line 3216 \"grammar.c\" <S2SV_EndBug> break ; case 97 : <S2SV_StartBug> # line 1560 \"grammar.y\" <S2SV_EndBug> { ( yyval . expression ) = ( yyvsp [ - 1 ] . expression ) ; } <S2SV_StartBug> # line 3224 \"grammar.c\" <S2SV_EndBug> break ; case 98 : <S2SV_StartBug> # line 1564 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_emit ( yyscanner , OP_FILESIZE , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3238 \"grammar.c\" <S2SV_EndBug> break ; case 99 : <S2SV_StartBug> # line 1574 \"grammar.y\" <S2SV_EndBug> { yywarning ( yyscanner , \"Using<S2SV_blank>deprecated<S2SV_blank>\\\\\"entrypoint\\\\\"<S2SV_blank>keyword.<S2SV_blank>Use<S2SV_blank>the<S2SV_blank>\\\\\"entry_point\\\\\"<S2SV_blank>\" \"function<S2SV_blank>from<S2SV_blank>PE<S2SV_blank>module<S2SV_blank>instead.\" ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_ENTRYPOINT , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3256 \"grammar.c\" <S2SV_EndBug> break ; case 100 : <S2SV_StartBug> # line 1588 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 1 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"intXXXX<S2SV_blank>or<S2SV_blank>uintXXXX\" ) ; compiler -> last_result = yr_parser_emit ( yyscanner , ( uint8_t ) ( OP_READ_INT + ( yyvsp [ - 3 ] . integer ) ) , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3276 \"grammar.c\" <S2SV_EndBug> break ; case 101 : <S2SV_StartBug> # line 1604 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , ( yyvsp [ 0 ] . integer ) , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = ( yyvsp [ 0 ] . integer ) ; } <S2SV_StartBug> # line 3290 \"grammar.c\" <S2SV_EndBug> break ; case 102 : <S2SV_StartBug> # line 1614 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_emit_with_arg_double ( yyscanner , OP_PUSH , ( yyvsp [ 0 ] . double_ ) , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } <S2SV_StartBug> # line 3303 \"grammar.c\" <S2SV_EndBug> break ; case 103 : <S2SV_StartBug> # line 1623 \"grammar.y\" <S2SV_EndBug> { SIZED_STRING * sized_string ; compiler -> last_result = yr_arena_write_data ( compiler -> sz_arena , ( yyvsp [ 0 ] . sized_string ) , ( yyvsp [ 0 ] . sized_string ) -> length + sizeof ( SIZED_STRING ) , ( void * * ) & sized_string ) ; yr_free ( ( yyvsp [ 0 ] . sized_string ) ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_emit_with_arg_reloc ( yyscanner , OP_PUSH , sized_string , NULL , NULL ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_STRING ; ( yyval . expression ) . value . sized_string = sized_string ; } <S2SV_StartBug> # line 3332 \"grammar.c\" <S2SV_EndBug> break ; case 104 : <S2SV_StartBug> # line 1648 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ 0 ] . c_string ) , OP_COUNT , UNDEFINED ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3348 \"grammar.c\" <S2SV_EndBug> break ; case 105 : <S2SV_StartBug> # line 1660 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ - 3 ] . c_string ) , OP_OFFSET , UNDEFINED ) ; yr_free ( ( yyvsp [ - 3 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3364 \"grammar.c\" <S2SV_EndBug> break ; case 106 : <S2SV_StartBug> # line 1672 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ 0 ] . c_string ) , OP_OFFSET , UNDEFINED ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3384 \"grammar.c\" <S2SV_EndBug> break ; case 107 : <S2SV_StartBug> # line 1688 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ - 3 ] . c_string ) , OP_LENGTH , UNDEFINED ) ; yr_free ( ( yyvsp [ - 3 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3400 \"grammar.c\" <S2SV_EndBug> break ; case 108 : <S2SV_StartBug> # line 1700 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_emit_with_arg ( yyscanner , OP_PUSH , 1 , NULL , NULL ) ; if ( compiler -> last_result == ERROR_SUCCESS ) compiler -> last_result = yr_parser_reduce_string_identifier ( yyscanner , ( yyvsp [ 0 ] . c_string ) , OP_LENGTH , UNDEFINED ) ; yr_free ( ( yyvsp [ 0 ] . c_string ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } <S2SV_StartBug> # line 3420 \"grammar.c\" <S2SV_EndBug> break ; case 109 : <S2SV_StartBug> # line 1716 \"grammar.y\" <S2SV_EndBug> { if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; } else if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_BOOLEAN ) { ( yyval . expression ) . type = EXPRESSION_TYPE_BOOLEAN ; ( yyval . expression ) . value . integer = UNDEFINED ; } else if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_OBJECT ) { compiler -> last_result = yr_parser_emit ( yyscanner , OP_OBJ_VALUE , NULL ) ; switch ( ( yyvsp [ 0 ] . expression ) . value . object -> type ) { case OBJECT_TYPE_INTEGER : ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = UNDEFINED ; break ; case OBJECT_TYPE_FLOAT : ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; break ; case OBJECT_TYPE_STRING : ( yyval . expression ) . type = EXPRESSION_TYPE_STRING ; ( yyval . expression ) . value . sized_string = NULL ; break ; default : yr_compiler_set_error_extra_info_fmt ( compiler , \"wrong<S2SV_blank>usage<S2SV_blank>of<S2SV_blank>identifier<S2SV_blank>\\\\\"%s\\\\\"\" , ( yyvsp [ 0 ] . expression ) . identifier ) ; compiler -> last_result = ERROR_WRONG_TYPE ; } } else { assert ( FALSE ) ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3469 \"grammar.c\" <S2SV_EndBug> break ; case 110 : <S2SV_StartBug> # line 1761 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER | EXPRESSION_TYPE_FLOAT , \"-\" ) ; if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = ( ( yyvsp [ 0 ] . expression ) . value . integer == UNDEFINED ) ? UNDEFINED : - ( ( yyvsp [ 0 ] . expression ) . value . integer ) ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_INT_MINUS , NULL ) ; } else if ( ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_FLOAT ) { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; compiler -> last_result = yr_parser_emit ( yyscanner , OP_DBL_MINUS , NULL ) ; } ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } <S2SV_StartBug> # line 3492 \"grammar.c\" <S2SV_EndBug> break ; case 111 : <S2SV_StartBug> # line 1780 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"+\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_INTEGER && ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . value . integer = OPERATION ( + , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } } <S2SV_StartBug> # line 3514 \"grammar.c\" <S2SV_EndBug> break ; case 112 : <S2SV_StartBug> # line 1798 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"-\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_INTEGER && ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . value . integer = OPERATION ( - , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } } <S2SV_StartBug> # line 3536 \"grammar.c\" <S2SV_EndBug> break ; case 113 : <S2SV_StartBug> # line 1816 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"*\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_INTEGER && ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { ( yyval . expression ) . value . integer = OPERATION ( * , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } } <S2SV_StartBug> # line 3558 \"grammar.c\" <S2SV_EndBug> break ; case 114 : <S2SV_StartBug> # line 1834 \"grammar.y\" <S2SV_EndBug> { compiler -> last_result = yr_parser_reduce_operation ( yyscanner , \"\\\\\\\\\" , ( yyvsp [ - 2 ] . expression ) , ( yyvsp [ 0 ] . expression ) ) ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; if ( ( yyvsp [ - 2 ] . expression ) . type == EXPRESSION_TYPE_INTEGER && ( yyvsp [ 0 ] . expression ) . type == EXPRESSION_TYPE_INTEGER ) { if ( ( yyvsp [ 0 ] . expression ) . value . integer != 0 ) { ( yyval . expression ) . value . integer = OPERATION ( / , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { compiler -> last_result = ERROR_DIVISION_BY_ZERO ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } } else { ( yyval . expression ) . type = EXPRESSION_TYPE_FLOAT ; } } <S2SV_StartBug> # line 3588 \"grammar.c\" <S2SV_EndBug> break ; case 115 : <S2SV_StartBug> # line 1860 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"%\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"%\" ) ; yr_parser_emit ( yyscanner , OP_MOD , NULL ) ; if ( ( yyvsp [ 0 ] . expression ) . value . integer != 0 ) { ( yyval . expression ) . value . integer = OPERATION ( % , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; } else { compiler -> last_result = ERROR_DIVISION_BY_ZERO ; ERROR_IF ( compiler -> last_result != ERROR_SUCCESS ) ; } } <S2SV_StartBug> # line 3610 \"grammar.c\" <S2SV_EndBug> break ; case 116 : <S2SV_StartBug> # line 1878 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"^\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"^\" ) ; yr_parser_emit ( yyscanner , OP_BITWISE_XOR , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( ^ , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3624 \"grammar.c\" <S2SV_EndBug> break ; case 117 : <S2SV_StartBug> # line 1888 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"^\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"^\" ) ; yr_parser_emit ( yyscanner , OP_BITWISE_AND , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( & , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3638 \"grammar.c\" <S2SV_EndBug> break ; case 118 : <S2SV_StartBug> # line 1898 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"|\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"|\" ) ; yr_parser_emit ( yyscanner , OP_BITWISE_OR , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( | , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3652 \"grammar.c\" <S2SV_EndBug> break ; case 119 : <S2SV_StartBug> # line 1908 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"~\" ) ; yr_parser_emit ( yyscanner , OP_BITWISE_NOT , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = ( ( yyvsp [ 0 ] . expression ) . value . integer == UNDEFINED ) ? UNDEFINED : ~ ( ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3666 \"grammar.c\" <S2SV_EndBug> break ; case 120 : <S2SV_StartBug> # line 1918 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"<<\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \"<<\" ) ; yr_parser_emit ( yyscanner , OP_SHL , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( << , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3680 \"grammar.c\" <S2SV_EndBug> break ; case 121 : <S2SV_StartBug> # line 1928 \"grammar.y\" <S2SV_EndBug> { CHECK_TYPE ( ( yyvsp [ - 2 ] . expression ) , EXPRESSION_TYPE_INTEGER , \">>\" ) ; CHECK_TYPE ( ( yyvsp [ 0 ] . expression ) , EXPRESSION_TYPE_INTEGER , \">>\" ) ; yr_parser_emit ( yyscanner , OP_SHR , NULL ) ; ( yyval . expression ) . type = EXPRESSION_TYPE_INTEGER ; ( yyval . expression ) . value . integer = OPERATION ( >> , ( yyvsp [ - 2 ] . expression ) . value . integer , ( yyvsp [ 0 ] . expression ) . value . integer ) ; } <S2SV_StartBug> # line 3694 \"grammar.c\" <S2SV_EndBug> break ; case 122 : <S2SV_StartBug> # line 1938 \"grammar.y\" <S2SV_EndBug> { ( yyval . expression ) = ( yyvsp [ 0 ] . expression ) ; } <S2SV_StartBug> # line 3702 \"grammar.c\" <S2SV_EndBug> break ; <S2SV_StartBug> # line 3706 \"grammar.c\" <S2SV_EndBug> default : break ; } YY_SYMBOL_PRINT ( \"-><S2SV_blank>$$<S2SV_blank>=\" , yyr1 [ yyn ] , & yyval , & yyloc ) ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; * ++ yyvsp = yyval ; yyn = yyr1 [ yyn ] ; yystate = yypgoto [ yyn - YYNTOKENS ] + * yyssp ; if ( 0 <= yystate && yystate <= YYLAST && yycheck [ yystate ] == * yyssp ) yystate = yytable [ yystate ] ; else yystate = yydefgoto [ yyn - YYNTOKENS ] ; goto yynewstate ; yyerrlab : yytoken = yychar == YYEMPTY ? YYEMPTY : YYTRANSLATE ( yychar ) ; if ( ! yyerrstatus ) { ++ yynerrs ; # if ! YYERROR_VERBOSE yyerror ( yyscanner , compiler , YY_ ( \"syntax<S2SV_blank>error\" ) ) ; # else # define YYSYNTAX_ERROR yysyntax_error ( & yymsg_alloc , & yymsg , yyssp , yytoken ) { char const * yymsgp = YY_ ( \"syntax<S2SV_blank>error\" ) ; int yysyntax_error_status ; yysyntax_error_status = YYSYNTAX_ERROR ; if ( yysyntax_error_status == 0 ) yymsgp = yymsg ; else if ( yysyntax_error_status == 1 ) { if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; yymsg = ( char * ) YYSTACK_ALLOC ( yymsg_alloc ) ; if ( ! yymsg ) { yymsg = yymsgbuf ; yymsg_alloc = sizeof yymsgbuf ; yysyntax_error_status = 2 ; } else { yysyntax_error_status = YYSYNTAX_ERROR ; yymsgp = yymsg ; } } yyerror ( yyscanner , compiler , yymsgp ) ; if ( yysyntax_error_status == 2 ) goto yyexhaustedlab ; } # undef YYSYNTAX_ERROR # endif } if ( yyerrstatus == 3 ) { if ( yychar <= YYEOF ) { if ( yychar == YYEOF ) YYABORT ; } else { yydestruct ( \"Error:<S2SV_blank>discarding\" , yytoken , & yylval , yyscanner , compiler ) ; yychar = YYEMPTY ; } } goto yyerrlab1 ; yyerrorlab : if ( 0 ) goto yyerrorlab ; YYPOPSTACK ( yylen ) ; yylen = 0 ; YY_STACK_PRINT ( yyss , yyssp ) ; yystate = * yyssp ; goto yyerrlab1 ; yyerrlab1 : yyerrstatus = 3 ; for ( ; ; ) { yyn = yypact [ yystate ] ; if ( ! yypact_value_is_default ( yyn ) ) { yyn += YYTERROR ; if ( 0 <= yyn && yyn <= YYLAST && yycheck [ yyn ] == YYTERROR ) { yyn = yytable [ yyn ] ; if ( 0 < yyn ) break ; } } if ( yyssp == yyss ) YYABORT ; yydestruct ( \"Error:<S2SV_blank>popping\" , yystos [ yystate ] , yyvsp , yyscanner , compiler ) ; YYPOPSTACK ( 1 ) ; yystate = * yyssp ; YY_STACK_PRINT ( yyss , yyssp ) ; } YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN * ++ yyvsp = yylval ; YY_IGNORE_MAYBE_UNINITIALIZED_END YY_SYMBOL_PRINT ( \"Shifting\" , yystos [ yyn ] , yyvsp , yylsp ) ; yystate = yyn ; goto yynewstate ; yyacceptlab : yyresult = 0 ; goto yyreturn ; yyabortlab : yyresult = 1 ; goto yyreturn ; # if ! defined yyoverflow || YYERROR_VERBOSE yyexhaustedlab : yyerror ( yyscanner , compiler , YY_ ( \"memory<S2SV_blank>exhausted\" ) ) ; yyresult = 2 ; # endif yyreturn : if ( yychar != YYEMPTY ) { yytoken = YYTRANSLATE ( yychar ) ; yydestruct ( \"Cleanup:<S2SV_blank>discarding<S2SV_blank>lookahead\" , yytoken , & yylval , yyscanner , compiler ) ; } YYPOPSTACK ( yylen ) ; YY_STACK_PRINT ( yyss , yyssp ) ; while ( yyssp != yyss ) { yydestruct ( \"Cleanup:<S2SV_blank>popping\" , yystos [ * yyssp ] , yyvsp , yyscanner , compiler ) ; YYPOPSTACK ( 1 ) ; } # ifndef yyoverflow if ( yyss != yyssa ) YYSTACK_FREE ( yyss ) ; # endif # if YYERROR_VERBOSE if ( yymsg != yymsgbuf ) YYSTACK_FREE ( yymsg ) ; # endif return yyresult ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; break ; default : assert ( FALSE ) ; <S2SV_ModStart> } # line 2371 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 834 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> ; break ; default : assert ( FALSE ) ; <S2SV_ModStart> } # line 2409 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 872 <S2SV_ModEnd> \"grammar.y\" { SIZED_STRING <S2SV_ModStart> } # line 2455 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 918 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line 2478 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 940 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 2491 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 949 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 2504 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 958 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 2523 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 973 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 2539 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 985 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2557 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 999 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 2574 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1012 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 2589 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1023 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> NULL ; } YYERROR ; } # line 2603 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1033 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2637 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1063 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2676 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1098 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2759 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1177 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2793 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1207 <S2SV_ModEnd> \"grammar.y\" { int <S2SV_ModStart> } # line 2846 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1256 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit <S2SV_ModStart> } # line 2856 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1262 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit <S2SV_ModStart> } # line 2866 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1268 <S2SV_ModEnd> \"grammar.y\" { YR_FIXUP <S2SV_ModStart> } # line 2896 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1294 <S2SV_ModEnd> \"grammar.y\" { YR_FIXUP <S2SV_ModStart> } # line 2936 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1330 <S2SV_ModEnd> \"grammar.y\" { YR_FIXUP <S2SV_ModStart> } # line 2965 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1355 <S2SV_ModEnd> \"grammar.y\" { YR_FIXUP <S2SV_ModStart> } # line 3005 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1391 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3018 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1400 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3031 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1409 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3044 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1418 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3057 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1427 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3070 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1436 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3083 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1445 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3091 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1449 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3099 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1456 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3105 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1457 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3111 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1463 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line 3133 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1485 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line 3149 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1497 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line 3164 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1512 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_with_arg <S2SV_ModStart> } # line 3173 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1518 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_with_arg <S2SV_ModStart> } # line 3184 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1535 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_pushes_for_strings <S2SV_ModStart> } # line 3195 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1542 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_pushes_for_strings <S2SV_ModStart> } # line 3206 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1554 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_with_arg <S2SV_ModStart> } # line 3214 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1558 <S2SV_ModEnd> \"grammar.y\" { yr_parser_emit_with_arg <S2SV_ModStart> } # line 3222 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1566 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3230 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1570 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3244 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1580 <S2SV_ModEnd> \"grammar.y\" { yywarning <S2SV_ModStart> } # line 3262 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1594 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3282 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1610 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3296 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1620 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3309 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1629 <S2SV_ModEnd> \"grammar.y\" { SIZED_STRING <S2SV_ModStart> } # line 3338 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1654 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3354 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1666 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3370 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1678 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3390 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1694 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3406 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1706 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3426 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1722 <S2SV_ModEnd> \"grammar.y\" { if <S2SV_ModStart> } # line 3475 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1767 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3498 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1786 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3520 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1804 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3542 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1822 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3564 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1840 <S2SV_ModEnd> \"grammar.y\" { compiler <S2SV_ModStart> } # line 3594 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1866 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3616 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1884 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3630 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1894 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3644 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1904 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3658 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1914 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3672 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1924 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3686 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1934 <S2SV_ModEnd> \"grammar.y\" { CHECK_TYPE <S2SV_ModStart> } # line 3700 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> : # line 1944 <S2SV_ModEnd> \"grammar.y\" { ( <S2SV_ModStart> } # line 3708 <S2SV_ModEnd> \"grammar.c\" break ; <S2SV_ModStart> ; # line 3712 <S2SV_ModEnd> \"grammar.c\" default :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11523\n\n```\nCWE-835 static Image * ReadTXTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char colorspace [ MagickPathExtent ] , text [ MagickPathExtent ] ; Image * image ; long x_offset , y_offset ; PixelInfo pixel ; MagickBooleanType status ; QuantumAny range ; register ssize_t i , x ; register Quantum * q ; ssize_t count , type , y ; unsigned long depth , height , max_value , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( text , 0 , sizeof ( text ) ) ; ( void ) ReadBlobString ( image , text ) ; if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) != 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { width = 0 ; height = 0 ; max_value = 0 ; * colorspace = '\\\\0' ; count = ( ssize_t ) sscanf ( text + 32 , \"%lu,%lu,%lu,%s\" , & width , & height , & max_value , colorspace ) ; if ( ( count != 4 ) || ( width == 0 ) || ( height == 0 ) || ( max_value == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = width ; image -> rows = height ; for ( depth = 1 ; ( GetQuantumRange ( depth ) + 1 ) < max_value ; depth ++ ) ; image -> depth = depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; LocaleLower ( colorspace ) ; i = ( ssize_t ) strlen ( colorspace ) - 1 ; image -> alpha_trait = UndefinedPixelTrait ; if ( ( i > 0 ) && ( colorspace [ i ] == 'a' ) ) { colorspace [ i ] = '\\\\0' ; image -> alpha_trait = BlendPixelTrait ; } type = ParseCommandOption ( MagickColorspaceOptions , MagickFalse , colorspace ) ; if ( type < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; ( void ) SetImageBackgroundColor ( image , exception ) ; ( void ) SetImageColorspace ( image , ( ColorspaceType ) type , exception ) ; GetPixelInfo ( image , & pixel ) ; range = GetQuantumRange ( image -> depth ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { double alpha , black , blue , green , red ; red = 0.0 ; green = 0.0 ; blue = 0.0 ; black = 0.0 ; alpha = 0.0 ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( ReadBlobString ( image , text ) == ( char * ) NULL ) break ; switch ( image -> colorspace ) { case GRAYColorspace : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & alpha ) ; green = red ; blue = red ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]\" , & x_offset , & y_offset , & red ) ; green = red ; blue = red ; break ; } case CMYKColorspace : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & black , & alpha ) ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & black ) ; break ; } default : { if ( image -> alpha_trait != UndefinedPixelTrait ) { count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue , & alpha ) ; break ; } count = ( ssize_t ) sscanf ( text , \"%ld,%ld:<S2SV_blank>(%lf%*[%,]%lf%*[%,]%lf%*[%,]\" , & x_offset , & y_offset , & red , & green , & blue ) ; break ; } } if ( strchr ( text , '%' ) != ( char * ) NULL ) { red *= 0.01 * range ; green *= 0.01 * range ; blue *= 0.01 * range ; black *= 0.01 * range ; alpha *= 0.01 * range ; } if ( image -> colorspace == LabColorspace ) { green += ( range + 1 ) / 2.0 ; blue += ( range + 1 ) / 2.0 ; } pixel . red = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( red + 0.5 ) , range ) ; pixel . green = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( green + 0.5 ) , range ) ; pixel . blue = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( blue + 0.5 ) , range ) ; pixel . black = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( black + 0.5 ) , range ) ; pixel . alpha = ( MagickRealType ) ScaleAnyToQuantum ( ( QuantumAny ) ( alpha + 0.5 ) , range ) ; q = GetAuthenticPixels ( image , ( ssize_t ) x_offset , ( ssize_t ) y_offset , 1 , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) continue ; SetPixelViaPixelInfo ( image , & pixel , q ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; } } <S2SV_StartBug> ( void ) ReadBlobString ( image , text ) ; <S2SV_EndBug> if ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( LocaleNCompare ( ( char * ) text , MagickID , strlen ( MagickID ) ) == 0 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18216\n\n```\nCWE-476 static ssize_t o2nm_node_num_store ( struct config_item * item , const char * page , size_t count ) { struct o2nm_node * node = to_o2nm_node ( item ) ; <S2SV_StartBug> struct o2nm_cluster * cluster = to_o2nm_cluster_from_node ( node ) ; <S2SV_EndBug> unsigned long tmp ; char * p = ( char * ) page ; int ret = 0 ; tmp = simple_strtoul ( p , & p , 0 ) ; if ( ! p || ( * p && ( * p != '\\\\n' ) ) ) return - EINVAL ; if ( tmp >= O2NM_MAX_NODES ) return - ERANGE ; if ( ! test_bit ( O2NM_NODE_ATTR_ADDRESS , & node -> nd_set_attributes ) || ! test_bit ( O2NM_NODE_ATTR_PORT , & node -> nd_set_attributes ) ) return - EINVAL ; <S2SV_StartBug> write_lock ( & cluster -> cl_nodes_lock ) ; <S2SV_EndBug> if ( cluster -> cl_nodes [ tmp ] ) ret = - EEXIST ; else if ( test_and_set_bit ( O2NM_NODE_ATTR_NUM , & node -> nd_set_attributes ) ) ret = - EBUSY ; else { cluster -> cl_nodes [ tmp ] = node ; node -> nd_num = tmp ; set_bit ( tmp , cluster -> cl_nodes_bitmap ) ; } write_unlock ( & cluster -> cl_nodes_lock ) ; <S2SV_StartBug> if ( ret ) <S2SV_EndBug> return ret ; return count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> o2nm_cluster * cluster <S2SV_ModEnd> ; unsigned long <S2SV_ModStart> - EINVAL ; o2nm_lock_subsystem ( ) ; cluster = to_o2nm_cluster_from_node ( node ) ; if ( ! cluster ) { o2nm_unlock_subsystem ( ) ; return - EINVAL ; } <S2SV_ModStart> cl_nodes_lock ) ; o2nm_unlock_subsystem ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_init_mv_probs ( VP9_COMMON * cm ) { <S2SV_StartBug> cm -> fc . nmvc = default_nmv_context ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> nmvc = default_nmv_context\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4054\n\n```\nCWE-476 static bool check_client_passwd ( PgSocket * client , const char * passwd ) { char md5 [ MD5_PASSWD_LEN + 1 ] ; const char * correct ; PgUser * user = client -> auth_user ; <S2SV_StartBug> if ( ! * passwd || ! * user -> passwd ) <S2SV_EndBug> return false ; switch ( cf_auth_type ) { case AUTH_PLAIN : return strcmp ( user -> passwd , passwd ) == 0 ; case AUTH_CRYPT : correct = crypt ( user -> passwd , ( char * ) client -> tmp_login_salt ) ; return correct && strcmp ( correct , passwd ) == 0 ; case AUTH_MD5 : if ( strlen ( passwd ) != MD5_PASSWD_LEN ) return false ; if ( ! isMD5 ( user -> passwd ) ) pg_md5_encrypt ( user -> passwd , user -> name , strlen ( user -> name ) , user -> passwd ) ; pg_md5_encrypt ( user -> passwd + 3 , ( char * ) client -> tmp_login_salt , 4 , md5 ) ; return strcmp ( md5 , passwd ) == 0 ; } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! user ) { slog_error ( client , \"Password<S2SV_blank>packet<S2SV_blank>before<S2SV_blank>auth<S2SV_blank>packet?\" ) ; return false ; } if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4503\n\n```\nCWE-20 static bool parse_notify ( struct pool * pool , json_t * val ) { char * job_id , * prev_hash , * coinbase1 , * coinbase2 , * bbversion , * nbit , * ntime , * header ; size_t cb1_len , cb2_len , alloc_len ; unsigned char * cb1 , * cb2 ; bool clean , ret = false ; int merkles , i ; json_t * arr ; arr = json_array_get ( val , 4 ) ; if ( ! arr || ! json_is_array ( arr ) ) goto out ; merkles = json_array_size ( arr ) ; job_id = json_array_string ( val , 0 ) ; prev_hash = json_array_string ( val , 1 ) ; coinbase1 = json_array_string ( val , 2 ) ; coinbase2 = json_array_string ( val , 3 ) ; bbversion = json_array_string ( val , 5 ) ; nbit = json_array_string ( val , 6 ) ; ntime = json_array_string ( val , 7 ) ; clean = json_is_true ( json_array_get ( val , 8 ) ) ; if ( ! job_id || ! prev_hash || ! coinbase1 || ! coinbase2 || ! bbversion || ! nbit || ! ntime ) { if ( job_id ) free ( job_id ) ; if ( prev_hash ) free ( prev_hash ) ; if ( coinbase1 ) free ( coinbase1 ) ; if ( coinbase2 ) free ( coinbase2 ) ; if ( bbversion ) free ( bbversion ) ; if ( nbit ) free ( nbit ) ; if ( ntime ) free ( ntime ) ; goto out ; } cg_wlock ( & pool -> data_lock ) ; free ( pool -> swork . job_id ) ; free ( pool -> swork . prev_hash ) ; free ( pool -> swork . bbversion ) ; free ( pool -> swork . nbit ) ; free ( pool -> swork . ntime ) ; pool -> swork . job_id = job_id ; pool -> swork . prev_hash = prev_hash ; cb1_len = strlen ( coinbase1 ) / 2 ; cb2_len = strlen ( coinbase2 ) / 2 ; pool -> swork . bbversion = bbversion ; pool -> swork . nbit = nbit ; pool -> swork . ntime = ntime ; pool -> swork . clean = clean ; alloc_len = pool -> swork . cb_len = cb1_len + pool -> n1_len + pool -> n2size + cb2_len ; pool -> nonce2_offset = cb1_len + pool -> n1_len ; for ( i = 0 ; i < pool -> swork . merkles ; i ++ ) free ( pool -> swork . merkle_bin [ i ] ) ; if ( merkles ) { pool -> swork . merkle_bin = ( unsigned char * * ) realloc ( pool -> swork . merkle_bin , sizeof ( char * ) * merkles + 1 ) ; for ( i = 0 ; i < merkles ; i ++ ) { char * merkle = json_array_string ( arr , i ) ; pool -> swork . merkle_bin [ i ] = ( unsigned char * ) malloc ( 32 ) ; if ( unlikely ( ! pool -> swork . merkle_bin [ i ] ) ) quit ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>malloc<S2SV_blank>pool<S2SV_blank>swork<S2SV_blank>merkle_bin\" ) ; hex2bin ( pool -> swork . merkle_bin [ i ] , merkle , 32 ) ; free ( merkle ) ; } } pool -> swork . merkles = merkles ; if ( clean ) pool -> nonce2 = 0 ; pool -> merkle_offset = strlen ( pool -> swork . bbversion ) + strlen ( pool -> swork . prev_hash ) ; pool -> swork . header_len = pool -> merkle_offset + 32 + strlen ( pool -> swork . ntime ) + strlen ( pool -> swork . nbit ) + 8 + 96 ; pool -> merkle_offset /= 2 ; pool -> swork . header_len = pool -> swork . header_len * 2 + 1 ; align_len ( & pool -> swork . header_len ) ; header = ( char * ) alloca ( pool -> swork . header_len ) ; snprintf ( header , pool -> swork . header_len , \"%s%s%s%s%s%s%s\" , pool -> swork . bbversion , pool -> swork . prev_hash , blank_merkel , pool -> swork . ntime , pool -> swork . nbit , \"00000000\" , workpadding ) ; if ( unlikely ( ! hex2bin ( pool -> header_bin , header , 128 ) ) ) <S2SV_StartBug> quit ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>header<S2SV_blank>to<S2SV_blank>header_bin<S2SV_blank>in<S2SV_blank>parse_notify\" ) ; <S2SV_EndBug> cb1 = ( unsigned char * ) calloc ( cb1_len , 1 ) ; if ( unlikely ( ! cb1 ) ) quithere ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>cb1<S2SV_blank>in<S2SV_blank>parse_notify\" ) ; hex2bin ( cb1 , coinbase1 , cb1_len ) ; cb2 = ( unsigned char * ) calloc ( cb2_len , 1 ) ; if ( unlikely ( ! cb2 ) ) quithere ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>cb2<S2SV_blank>in<S2SV_blank>parse_notify\" ) ; hex2bin ( cb2 , coinbase2 , cb2_len ) ; free ( pool -> coinbase ) ; align_len ( & alloc_len ) ; pool -> coinbase = ( unsigned char * ) calloc ( alloc_len , 1 ) ; if ( unlikely ( ! pool -> coinbase ) ) quit ( 1 , \"Failed<S2SV_blank>to<S2SV_blank>calloc<S2SV_blank>pool<S2SV_blank>coinbase<S2SV_blank>in<S2SV_blank>parse_notify\" ) ; memcpy ( pool -> coinbase , cb1 , cb1_len ) ; memcpy ( pool -> coinbase + cb1_len , pool -> nonce1bin , pool -> n1_len ) ; memcpy ( pool -> coinbase + cb1_len + pool -> n1_len + pool -> n2size , cb2 , cb2_len ) ; cg_wunlock ( & pool -> data_lock ) ; if ( opt_protocol ) { applog ( LOG_DEBUG , \"job_id:<S2SV_blank>%s\" , job_id ) ; applog ( LOG_DEBUG , \"prev_hash:<S2SV_blank>%s\" , prev_hash ) ; applog ( LOG_DEBUG , \"coinbase1:<S2SV_blank>%s\" , coinbase1 ) ; applog ( LOG_DEBUG , \"coinbase2:<S2SV_blank>%s\" , coinbase2 ) ; applog ( LOG_DEBUG , \"bbversion:<S2SV_blank>%s\" , bbversion ) ; applog ( LOG_DEBUG , \"nbit:<S2SV_blank>%s\" , nbit ) ; applog ( LOG_DEBUG , \"ntime:<S2SV_blank>%s\" , ntime ) ; applog ( LOG_DEBUG , \"clean:<S2SV_blank>%s\" , clean ? \"yes\" : \"no\" ) ; } free ( coinbase1 ) ; free ( coinbase2 ) ; free ( cb1 ) ; free ( cb2 ) ; pool -> getwork_requested ++ ; total_getworks ++ ; ret = true ; if ( pool == current_pool ( ) ) opt_work_update = true ; out : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ) { applog ( LOG_WARNING , \"%s:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>convert<S2SV_blank>header<S2SV_blank>to<S2SV_blank>header_bin,<S2SV_blank>got<S2SV_blank>%s\" , __func__ , header ) ; pool_failed ( pool ) ; return false ; } <S2SV_ModEnd> cb1 = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1066\n\n```\nCWE-476 int build_ntlmssp_auth_blob ( unsigned char * * pbuffer , u16 * buflen , struct cifs_ses * ses , const struct nls_table * nls_cp ) { int rc ; AUTHENTICATE_MESSAGE * sec_blob ; __u32 flags ; unsigned char * tmp ; rc = setup_ntlmv2_rsp ( ses , nls_cp ) ; if ( rc ) { cifs_dbg ( VFS , \"Error<S2SV_blank>%d<S2SV_blank>during<S2SV_blank>NTLMSSP<S2SV_blank>authentication\\\\n\" , rc ) ; * buflen = 0 ; goto setup_ntlmv2_ret ; } * pbuffer = kmalloc ( size_of_ntlmssp_blob ( ses ) , GFP_KERNEL ) ; sec_blob = ( AUTHENTICATE_MESSAGE * ) * pbuffer ; memcpy ( sec_blob -> Signature , NTLMSSP_SIGNATURE , 8 ) ; sec_blob -> MessageType = NtLmAuthenticate ; flags = NTLMSSP_NEGOTIATE_56 | NTLMSSP_REQUEST_TARGET | NTLMSSP_NEGOTIATE_TARGET_INFO | NTLMSSP_NEGOTIATE_128 | NTLMSSP_NEGOTIATE_UNICODE | <S2SV_StartBug> NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC ; <S2SV_EndBug> <S2SV_StartBug> if ( ses -> server -> sign ) { <S2SV_EndBug> flags |= NTLMSSP_NEGOTIATE_SIGN ; if ( ! ses -> server -> session_estab || ses -> ntlmssp -> sesskey_per_smbsess ) flags |= NTLMSSP_NEGOTIATE_KEY_XCH ; <S2SV_StartBug> } <S2SV_EndBug> tmp = * pbuffer + sizeof ( AUTHENTICATE_MESSAGE ) ; sec_blob -> NegotiateFlags = cpu_to_le32 ( flags ) ; sec_blob -> LmChallengeResponse . BufferOffset = cpu_to_le32 ( sizeof ( AUTHENTICATE_MESSAGE ) ) ; sec_blob -> LmChallengeResponse . Length = 0 ; sec_blob -> LmChallengeResponse . MaximumLength = 0 ; sec_blob -> NtChallengeResponse . BufferOffset = cpu_to_le32 ( tmp - * pbuffer ) ; if ( ses -> user_name != NULL ) { memcpy ( tmp , ses -> auth_key . response + CIFS_SESS_KEY_SIZE , ses -> auth_key . len - CIFS_SESS_KEY_SIZE ) ; tmp += ses -> auth_key . len - CIFS_SESS_KEY_SIZE ; sec_blob -> NtChallengeResponse . Length = cpu_to_le16 ( ses -> auth_key . len - CIFS_SESS_KEY_SIZE ) ; sec_blob -> NtChallengeResponse . MaximumLength = cpu_to_le16 ( ses -> auth_key . len - CIFS_SESS_KEY_SIZE ) ; } else { sec_blob -> NtChallengeResponse . Length = 0 ; sec_blob -> NtChallengeResponse . MaximumLength = 0 ; } if ( ses -> domainName == NULL ) { sec_blob -> DomainName . BufferOffset = cpu_to_le32 ( tmp - * pbuffer ) ; sec_blob -> DomainName . Length = 0 ; sec_blob -> DomainName . MaximumLength = 0 ; tmp += 2 ; } else { int len ; len = cifs_strtoUTF16 ( ( __le16 * ) tmp , ses -> domainName , CIFS_MAX_DOMAINNAME_LEN , nls_cp ) ; len *= 2 ; sec_blob -> DomainName . BufferOffset = cpu_to_le32 ( tmp - * pbuffer ) ; sec_blob -> DomainName . Length = cpu_to_le16 ( len ) ; sec_blob -> DomainName . MaximumLength = cpu_to_le16 ( len ) ; tmp += len ; } if ( ses -> user_name == NULL ) { sec_blob -> UserName . BufferOffset = cpu_to_le32 ( tmp - * pbuffer ) ; sec_blob -> UserName . Length = 0 ; sec_blob -> UserName . MaximumLength = 0 ; tmp += 2 ; } else { int len ; len = cifs_strtoUTF16 ( ( __le16 * ) tmp , ses -> user_name , CIFS_MAX_USERNAME_LEN , nls_cp ) ; len *= 2 ; sec_blob -> UserName . BufferOffset = cpu_to_le32 ( tmp - * pbuffer ) ; sec_blob -> UserName . Length = cpu_to_le16 ( len ) ; sec_blob -> UserName . MaximumLength = cpu_to_le16 ( len ) ; tmp += len ; } sec_blob -> WorkstationName . BufferOffset = cpu_to_le32 ( tmp - * pbuffer ) ; sec_blob -> WorkstationName . Length = 0 ; sec_blob -> WorkstationName . MaximumLength = 0 ; tmp += 2 ; if ( ( ( ses -> ntlmssp -> server_flags & NTLMSSP_NEGOTIATE_KEY_XCH ) || ( ses -> ntlmssp -> server_flags & NTLMSSP_NEGOTIATE_EXTENDED_SEC ) ) && ! calc_seckey ( ses ) ) { memcpy ( tmp , ses -> ntlmssp -> ciphertext , CIFS_CPHTXT_SIZE ) ; sec_blob -> SessionKey . BufferOffset = cpu_to_le32 ( tmp - * pbuffer ) ; sec_blob -> SessionKey . Length = cpu_to_le16 ( CIFS_CPHTXT_SIZE ) ; sec_blob -> SessionKey . MaximumLength = cpu_to_le16 ( CIFS_CPHTXT_SIZE ) ; tmp += CIFS_CPHTXT_SIZE ; } else { sec_blob -> SessionKey . BufferOffset = cpu_to_le32 ( tmp - * pbuffer ) ; sec_blob -> SessionKey . Length = 0 ; sec_blob -> SessionKey . MaximumLength = 0 ; } * buflen = tmp - * pbuffer ; setup_ntlmv2_ret : return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NTLMSSP_NEGOTIATE_NTLM | NTLMSSP_NEGOTIATE_EXTENDED_SEC | NTLMSSP_NEGOTIATE_SEAL <S2SV_ModStart> -> sign ) <S2SV_ModEnd> flags |= NTLMSSP_NEGOTIATE_SIGN <S2SV_ModStart> |= NTLMSSP_NEGOTIATE_KEY_XCH ; <S2SV_ModEnd> tmp = *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10248\n\n```\nCWE-476 static void jpc_undo_roi ( jas_matrix_t * x , int roishift , int bgshift , int numbps ) { int i ; int j ; int thresh ; jpc_fix_t val ; jpc_fix_t mag ; bool warn ; uint_fast32_t mask ; <S2SV_StartBug> if ( roishift == 0 && bgshift == 0 ) { <S2SV_EndBug> return ; } thresh = 1 << roishift ; warn = false ; for ( i = 0 ; i < jas_matrix_numrows ( x ) ; ++ i ) { for ( j = 0 ; j < jas_matrix_numcols ( x ) ; ++ j ) { val = jas_matrix_get ( x , i , j ) ; mag = JAS_ABS ( val ) ; if ( mag >= thresh ) { mag >>= roishift ; val = ( val < 0 ) ? ( - mag ) : mag ; jas_matrix_set ( x , i , j , val ) ; } else { mag <<= bgshift ; <S2SV_StartBug> mask = ( 1 << numbps ) - 1 ; <S2SV_EndBug> if ( mag & ( ~ mask ) ) { if ( ! warn ) { jas_eprintf ( \"warning:<S2SV_blank>possibly<S2SV_blank>corrupt<S2SV_blank>code<S2SV_blank>stream\\\\n\" ) ; warn = true ; } mag &= mask ; } val = ( val < 0 ) ? ( - mag ) : mag ; jas_matrix_set ( x , i , j , val ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( roishift < 0 ) { jas_eprintf ( \"warning:<S2SV_blank>forcing<S2SV_blank>negative<S2SV_blank>ROI<S2SV_blank>shift<S2SV_blank>to<S2SV_blank>zero<S2SV_blank>\" \"(bitstream<S2SV_blank>is<S2SV_blank>probably<S2SV_blank>corrupt)\\\\n\" ) ; roishift = 0 ; } if ( roishift <S2SV_ModStart> mask = ( JAS_CAST ( uint_fast32_t , 1 ) <S2SV_ModEnd> << numbps )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-354(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18672\n\n```\nCWE-354 void next_character ( void ) <S2SV_StartBug> { <S2SV_EndBug> strlcpy ( cipher , english_alphabet , ENGLISH_ALPHABET_BUF ) ; random_permute_char ( cipher , strlen ( cipher ) ) ; static char CONFIDENTIAL current_word [ CURRENT_WORD_BUF ] ; get_current_word ( current_word ) ; if ( strlen ( current_word ) > 4 ) { memzero ( current_word , sizeof ( current_word ) ) ; recovery_abort ( ) ; fsm_sendFailure ( FailureType_Failure_SyntaxError , \"Words<S2SV_blank>were<S2SV_blank>not<S2SV_blank>entered<S2SV_blank>correctly.<S2SV_blank>Make<S2SV_blank>sure<S2SV_blank>you<S2SV_blank>are<S2SV_blank>using<S2SV_blank>the<S2SV_blank>substition<S2SV_blank>cipher.\" ) ; layoutHome ( ) ; return ; } CharacterRequest resp ; memset ( & resp , 0 , sizeof ( CharacterRequest ) ) ; resp . word_pos = get_current_word_pos ( ) ; resp . character_pos = strlen ( current_word ) ; msg_write ( MessageType_MessageType_CharacterRequest , & resp ) ; bool auto_completed = false ; if ( strlen ( current_word ) >= 3 ) { auto_completed = attempt_auto_complete ( current_word ) ; } # if DEBUG_LINK if ( auto_completed ) { strlcpy ( auto_completed_word , current_word , CURRENT_WORD_BUF ) ; } else { auto_completed_word [ 0 ] = '\\\\0' ; } # endif format_current_word ( current_word , auto_completed ) ; layout_cipher ( current_word , cipher ) ; memzero ( current_word , sizeof ( current_word ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { if ( ! recovery_started ) { recovery_abort ( ) ; fsm_sendFailure ( FailureType_Failure_UnexpectedMessage , \"Not<S2SV_blank>in<S2SV_blank>Recovery<S2SV_blank>mode\" ) ; layoutHome ( ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11664\n\n```\nCWE-125 struct _mdi * _WM_ParseNewMus ( uint8_t * mus_data , uint32_t mus_size ) { uint8_t mus_hdr [ ] = { 'M' , 'U' , 'S' , 0x1A } ; uint32_t mus_song_ofs = 0 ; uint32_t mus_song_len = 0 ; uint16_t mus_ch_cnt1 = 0 ; uint16_t mus_ch_cnt2 = 0 ; uint16_t mus_no_instr = 0 ; uint32_t mus_data_ofs = 0 ; uint16_t * mus_mid_instr = NULL ; uint16_t mus_instr_cnt = 0 ; struct _mdi * mus_mdi ; uint32_t mus_divisions = 60 ; float tempo_f = 0.0 ; uint16_t mus_freq = 0 ; float samples_per_tick_f = 0.0 ; <S2SV_StartBug> uint8_t mus_event [ ] = { 0 , 0 , 0 , 0 } ; <S2SV_EndBug> uint8_t mus_event_size = 0 ; uint8_t mus_prev_vol [ ] = { 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 , 0 } ; uint32_t setup_ret = 0 ; uint32_t mus_ticks = 0 ; uint32_t sample_count = 0 ; float sample_count_f = 0.0 ; float sample_remainder = 0.0 ; uint16_t pitchbend_tmp = 0 ; if ( mus_size < 17 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_MUS , \"File<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; return NULL ; } if ( memcmp ( mus_data , mus_hdr , 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_MUS , NULL , 0 ) ; return NULL ; } mus_song_len = ( mus_data [ 5 ] << 8 ) | mus_data [ 4 ] ; mus_song_ofs = ( mus_data [ 7 ] << 8 ) | mus_data [ 6 ] ; mus_ch_cnt1 = ( mus_data [ 9 ] << 8 ) | mus_data [ 8 ] ; mus_ch_cnt2 = ( mus_data [ 11 ] << 8 ) | mus_data [ 10 ] ; UNUSED ( mus_ch_cnt1 ) ; UNUSED ( mus_ch_cnt2 ) ; mus_no_instr = ( mus_data [ 13 ] << 8 ) | mus_data [ 12 ] ; mus_data_ofs = 16 ; if ( mus_size < ( mus_data_ofs + ( mus_no_instr << 1 ) + mus_song_len ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_MUS , \"File<S2SV_blank>too<S2SV_blank>short\" , 0 ) ; return NULL ; } mus_mid_instr = malloc ( mus_no_instr * sizeof ( uint16_t ) ) ; for ( mus_instr_cnt = 0 ; mus_instr_cnt < mus_no_instr ; mus_instr_cnt ++ ) { mus_mid_instr [ mus_instr_cnt ] = ( mus_data [ mus_data_ofs + 1 ] << 8 ) | mus_data [ mus_data_ofs ] ; mus_data_ofs += 2 ; } mus_data_ofs = mus_song_ofs ; mus_freq = _cvt_get_option ( WM_CO_FREQUENCY ) ; if ( mus_freq == 0 ) mus_freq = 140 ; if ( ( _WM_MixerOptions & WM_MO_ROUNDTEMPO ) ) { tempo_f = ( float ) ( 60000000 / mus_freq ) + 0.5f ; } else { tempo_f = ( float ) ( 60000000 / mus_freq ) ; } samples_per_tick_f = _WM_GetSamplesPerTick ( mus_divisions , ( uint32_t ) tempo_f ) ; mus_mdi = _WM_initMDI ( ) ; _WM_midi_setup_divisions ( mus_mdi , mus_divisions ) ; _WM_midi_setup_tempo ( mus_mdi , ( uint32_t ) tempo_f ) ; do { _mus_build_event : # if 1 MUS_EVENT_DEBUG ( \"Before\" , mus_data [ mus_data_ofs ] , 0 ) ; if ( ( mus_data [ mus_data_ofs ] & 0x0f ) == 0x0f ) { mus_data [ mus_data_ofs ] = ( mus_data [ mus_data_ofs ] & 0xf0 ) | 0x09 ; } else if ( ( mus_data [ mus_data_ofs ] & 0x0f ) == 0x09 ) { mus_data [ mus_data_ofs ] = ( mus_data [ mus_data_ofs ] & 0xf0 ) | 0x0f ; } MUS_EVENT_DEBUG ( \"After\" , mus_data [ mus_data_ofs ] , 0 ) ; # endif switch ( ( mus_data [ mus_data_ofs ] >> 4 ) & 0x07 ) { case 0 : mus_event_size = 2 ; mus_event [ 0 ] = 0x80 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = mus_data [ mus_data_ofs + 1 ] ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 1 : if ( mus_data [ mus_data_ofs + 1 ] & 0x80 ) { mus_event_size = 3 ; mus_event [ 0 ] = 0x90 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = mus_data [ mus_data_ofs + 1 ] & 0x7f ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; mus_prev_vol [ mus_data [ mus_data_ofs ] & 0x0f ] = mus_event [ 2 ] ; } else { mus_event_size = 2 ; mus_event [ 0 ] = 0x90 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = mus_data [ mus_data_ofs + 1 ] ; mus_event [ 2 ] = mus_prev_vol [ mus_data [ mus_data_ofs ] & 0x0f ] ; mus_event [ 3 ] = 0 ; } break ; case 2 : mus_event_size = 2 ; mus_event [ 0 ] = 0xe0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; pitchbend_tmp = mus_data [ mus_data_ofs + 1 ] << 6 ; mus_event [ 1 ] = pitchbend_tmp & 0x7f ; mus_event [ 2 ] = ( pitchbend_tmp >> 7 ) & 0x7f ; mus_event [ 3 ] = 0 ; break ; case 3 : mus_event_size = 2 ; switch ( mus_data [ mus_data_ofs + 1 ] ) { case 10 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 120 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 11 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 123 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 12 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 126 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 13 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 127 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 14 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 121 ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; default : goto _mus_next_data ; } break ; case 4 : mus_event_size = 3 ; switch ( mus_data [ mus_data_ofs + 1 ] ) { case 0 : mus_event [ 0 ] = 0xc0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 2 ] = 0 ; mus_event [ 3 ] = 0 ; break ; case 1 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 0 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 2 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 1 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 3 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 7 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 4 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 10 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 5 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 11 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 6 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 91 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 7 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 93 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 8 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 64 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; case 9 : mus_event [ 0 ] = 0xb0 | ( mus_data [ mus_data_ofs ] & 0x0f ) ; mus_event [ 1 ] = 67 ; mus_event [ 2 ] = mus_data [ mus_data_ofs + 2 ] ; mus_event [ 3 ] = 0 ; break ; default : goto _mus_next_data ; } break ; case 5 : mus_event_size = 1 ; goto _mus_next_data ; break ; case 6 : goto _mus_end_of_song ; break ; case 7 : mus_event_size = 1 ; goto _mus_next_data ; break ; } <S2SV_StartBug> setup_ret = _WM_SetupMidiEvent ( mus_mdi , ( uint8_t * ) mus_event , 0 ) ; <S2SV_EndBug> if ( setup_ret == 0 ) { goto _mus_end ; } _mus_next_data : if ( ! ( mus_data [ mus_data_ofs ] & 0x80 ) ) { mus_data_ofs += mus_event_size ; goto _mus_build_event ; } mus_data_ofs += mus_event_size ; mus_ticks = 0 ; do { mus_ticks = ( mus_ticks << 7 ) | ( mus_data [ mus_data_ofs ++ ] & 0x7f ) ; } while ( mus_data [ mus_data_ofs - 1 ] & 0x80 ) ; sample_count_f = ( ( float ) mus_ticks * samples_per_tick_f ) + sample_remainder ; sample_count = ( uint32_t ) sample_count_f ; sample_remainder = sample_count_f - ( float ) sample_count ; mus_mdi -> events [ mus_mdi -> event_count - 1 ] . samples_to_next = sample_count ; mus_mdi -> extra_info . approx_total_samples += sample_count ; } while ( mus_data_ofs < mus_size ) ; _mus_end_of_song : if ( ( mus_mdi -> reverb = _WM_init_reverb ( _WM_SampleRate , _WM_reverb_room_width , _WM_reverb_room_length , _WM_reverb_listen_posx , _WM_reverb_listen_posy ) ) == NULL ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_MEM , \"to<S2SV_blank>init<S2SV_blank>reverb\" , 0 ) ; goto _mus_end ; } _WM_midi_setup_endoftrack ( mus_mdi ) ; mus_mdi -> extra_info . current_sample = 0 ; mus_mdi -> current_event = & mus_mdi -> events [ 0 ] ; mus_mdi -> samples_to_mix = 0 ; mus_mdi -> note = NULL ; _WM_ResetToStart ( mus_mdi ) ; _mus_end : free ( mus_mid_instr ) ; if ( mus_mdi -> reverb ) return ( mus_mdi ) ; _WM_freeMDI ( mus_mdi ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0.0 ; # define MUS_SZ 4 <S2SV_ModStart> uint8_t mus_event [ MUS_SZ <S2SV_ModStart> * ) mus_event , MUS_SZ\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 void * Sys_LoadDll ( const char * name , qboolean useSystemLib ) { <S2SV_StartBug> void * dllhandle ; <S2SV_EndBug> if ( useSystemLib ) Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name ) ; if ( ! useSystemLib || ! ( dllhandle = Sys_LoadLibrary ( name ) ) ) { const char * topDir ; char libPath [ MAX_OSPATH ] ; topDir = Sys_BinaryPath ( ) ; if ( ! * topDir ) topDir = \".\" ; Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , topDir ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , topDir , PATH_SEP , name ) ; if ( ! ( dllhandle = Sys_LoadLibrary ( libPath ) ) ) { const char * basePath = Cvar_VariableString ( \"fs_basepath\" ) ; if ( ! basePath || ! * basePath ) basePath = \".\" ; if ( FS_FilenameCompare ( topDir , basePath ) ) { Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , basePath ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , basePath , PATH_SEP , name ) ; dllhandle = Sys_LoadLibrary ( libPath ) ; } if ( ! dllhandle ) Com_Printf ( \"Loading<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>failed\\\\n\" , name ) ; } } return dllhandle ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * dllhandle ; if ( COM_CompareExtension ( name , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , name ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19815\n\n```\nCWE-476 static int f2fs_set_data_page_dirty ( struct page * page ) { <S2SV_StartBug> struct address_space * mapping = page -> mapping ; <S2SV_EndBug> <S2SV_StartBug> struct inode * inode = mapping -> host ; <S2SV_EndBug> trace_f2fs_set_page_dirty ( page , DATA ) ; if ( ! PageUptodate ( page ) ) <S2SV_StartBug> SetPageUptodate ( page ) ; <S2SV_EndBug> if ( f2fs_is_atomic_file ( inode ) && ! f2fs_is_commit_atomic_write ( inode ) ) { if ( ! IS_ATOMIC_WRITTEN_PAGE ( page ) ) { f2fs_register_inmem_page ( inode , page ) ; return 1 ; } return 0 ; } if ( ! PageDirty ( page ) ) { __set_page_dirty_nobuffers ( page ) ; f2fs_update_dirty_page ( inode , page ) ; return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct <S2SV_ModEnd> inode * inode <S2SV_ModStart> * inode = page_file_mapping ( page ) <S2SV_ModEnd> -> host ; <S2SV_ModStart> ) ) SetPageUptodate ( page ) ; if ( PageSwapCache ( page ) ) return __set_page_dirty_nobuffers\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void get_frame_stats ( vpx_codec_ctx_t * ctx , <S2SV_EndBug> const vpx_image_t * img , vpx_codec_pts_t pts , unsigned int duration , vpx_enc_frame_flags_t flags , unsigned int deadline , <S2SV_StartBug> vpx_fixed_buf_t * stats ) { <S2SV_EndBug> vpx_codec_iter_t iter = NULL ; const vpx_codec_cx_pkt_t * pkt = NULL ; const vpx_codec_err_t res = vpx_codec_encode ( ctx , img , pts , duration , flags , deadline ) ; if ( res != VPX_CODEC_OK ) die_codec ( ctx , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>frame<S2SV_blank>stats.\" ) ; while ( ( pkt = vpx_codec_get_cx_data ( ctx , & iter ) ) != NULL ) { <S2SV_StartBug> if ( pkt -> kind == VPX_CODEC_STATS_PKT ) { <S2SV_EndBug> const uint8_t * const pkt_buf = pkt -> data . twopass_stats . buf ; const size_t pkt_size = pkt -> data . twopass_stats . sz ; stats -> buf = realloc ( stats -> buf , stats -> sz + pkt_size ) ; memcpy ( ( uint8_t * ) stats -> buf + stats -> sz , pkt_buf , pkt_size ) ; stats -> sz += pkt_size ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> get_frame_stats ( vpx_codec_ctx_t <S2SV_ModStart> stats ) { int got_pkts = 0 ; <S2SV_ModStart> NULL ) { got_pkts = 1 ; <S2SV_ModStart> ; } } return got_pkts ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3183\n\n```\nCWE-119 static int logi_dj_ll_raw_request ( struct hid_device * hid , unsigned char reportnum , __u8 * buf , size_t count , unsigned char report_type , int reqtype ) { struct dj_device * djdev = hid -> driver_data ; struct dj_receiver_dev * djrcv_dev = djdev -> dj_receiver_dev ; u8 * out_buf ; int ret ; if ( buf [ 0 ] != REPORT_TYPE_LEDS ) return - EINVAL ; out_buf = kzalloc ( DJREPORT_SHORT_LENGTH , GFP_ATOMIC ) ; if ( ! out_buf ) return - ENOMEM ; <S2SV_StartBug> if ( count < DJREPORT_SHORT_LENGTH - 2 ) <S2SV_EndBug> count = DJREPORT_SHORT_LENGTH - 2 ; out_buf [ 0 ] = REPORT_ID_DJ_SHORT ; out_buf [ 1 ] = djdev -> device_index ; memcpy ( out_buf + 2 , buf , count ) ; ret = hid_hw_raw_request ( djrcv_dev -> hdev , out_buf [ 0 ] , out_buf , DJREPORT_SHORT_LENGTH , report_type , reqtype ) ; kfree ( out_buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( count > <S2SV_ModEnd> DJREPORT_SHORT_LENGTH - 2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int vp9_loop_filter_worker ( void * arg1 , void * arg2 ) { <S2SV_EndBug> <S2SV_StartBug> LFWorkerData * const lf_data = ( LFWorkerData * ) arg1 ; <S2SV_EndBug> <S2SV_StartBug> ( void ) arg2 ; <S2SV_EndBug> <S2SV_StartBug> vp9_loop_filter_rows ( lf_data -> frame_buffer , lf_data -> cm , & lf_data -> xd , <S2SV_EndBug> lf_data -> start , lf_data -> stop , lf_data -> y_only ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int vp9_loop_filter_worker ( <S2SV_ModEnd> LFWorkerData * const <S2SV_ModStart> * const lf_data , void * unused ) { <S2SV_ModEnd> ( void ) <S2SV_ModStart> ( void ) unused <S2SV_ModEnd> ; vp9_loop_filter_rows ( <S2SV_ModStart> -> cm , lf_data -> planes <S2SV_ModEnd> , lf_data ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4588\n\n```\nCWE-119 static int do_ip_vs_set_ctl ( struct sock * sk , int cmd , void __user * user , unsigned int len ) { int ret ; unsigned char arg [ MAX_ARG_LEN ] ; struct ip_vs_service_user * usvc_compat ; struct ip_vs_service_user_kern usvc ; struct ip_vs_service * svc ; struct ip_vs_dest_user * udest_compat ; struct ip_vs_dest_user_kern udest ; if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; <S2SV_StartBug> if ( len != set_arglen [ SET_CMDID ( cmd ) ] ) { <S2SV_EndBug> pr_err ( \"set_ctl:<S2SV_blank>len<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u\\\\n\" , len , set_arglen [ SET_CMDID ( cmd ) ] ) ; return - EINVAL ; } if ( copy_from_user ( arg , user , len ) != 0 ) return - EFAULT ; ip_vs_use_count_inc ( ) ; if ( mutex_lock_interruptible ( & __ip_vs_mutex ) ) { ret = - ERESTARTSYS ; goto out_dec ; } if ( cmd == IP_VS_SO_SET_FLUSH ) { ret = ip_vs_flush ( ) ; goto out_unlock ; } else if ( cmd == IP_VS_SO_SET_TIMEOUT ) { ret = ip_vs_set_timeout ( ( struct ip_vs_timeout_user * ) arg ) ; goto out_unlock ; } else if ( cmd == IP_VS_SO_SET_STARTDAEMON ) { struct ip_vs_daemon_user * dm = ( struct ip_vs_daemon_user * ) arg ; ret = start_sync_thread ( dm -> state , dm -> mcast_ifn , dm -> syncid ) ; goto out_unlock ; } else if ( cmd == IP_VS_SO_SET_STOPDAEMON ) { struct ip_vs_daemon_user * dm = ( struct ip_vs_daemon_user * ) arg ; ret = stop_sync_thread ( dm -> state ) ; goto out_unlock ; } usvc_compat = ( struct ip_vs_service_user * ) arg ; udest_compat = ( struct ip_vs_dest_user * ) ( usvc_compat + 1 ) ; ip_vs_copy_usvc_compat ( & usvc , usvc_compat ) ; ip_vs_copy_udest_compat ( & udest , udest_compat ) ; if ( cmd == IP_VS_SO_SET_ZERO ) { if ( ! usvc . fwmark && ! usvc . addr . ip && ! usvc . port ) { ret = ip_vs_zero_all ( ) ; goto out_unlock ; } } if ( usvc . protocol != IPPROTO_TCP && usvc . protocol != IPPROTO_UDP ) { pr_err ( \"set_ctl:<S2SV_blank>invalid<S2SV_blank>protocol:<S2SV_blank>%d<S2SV_blank>%pI4:%d<S2SV_blank>%s\\\\n\" , usvc . protocol , & usvc . addr . ip , ntohs ( usvc . port ) , usvc . sched_name ) ; ret = - EFAULT ; goto out_unlock ; } if ( usvc . fwmark == 0 ) svc = __ip_vs_service_get ( usvc . af , usvc . protocol , & usvc . addr , usvc . port ) ; else svc = __ip_vs_svc_fwm_get ( usvc . af , usvc . fwmark ) ; if ( cmd != IP_VS_SO_SET_ADD && ( svc == NULL || svc -> protocol != usvc . protocol ) ) { ret = - ESRCH ; goto out_unlock ; } switch ( cmd ) { case IP_VS_SO_SET_ADD : if ( svc != NULL ) ret = - EEXIST ; else ret = ip_vs_add_service ( & usvc , & svc ) ; break ; case IP_VS_SO_SET_EDIT : ret = ip_vs_edit_service ( svc , & usvc ) ; break ; case IP_VS_SO_SET_DEL : ret = ip_vs_del_service ( svc ) ; if ( ! ret ) goto out_unlock ; break ; case IP_VS_SO_SET_ZERO : ret = ip_vs_zero_service ( svc ) ; break ; case IP_VS_SO_SET_ADDDEST : ret = ip_vs_add_dest ( svc , & udest ) ; break ; case IP_VS_SO_SET_EDITDEST : ret = ip_vs_edit_dest ( svc , & udest ) ; break ; case IP_VS_SO_SET_DELDEST : ret = ip_vs_del_dest ( svc , & udest ) ; break ; default : ret = - EINVAL ; } if ( svc ) ip_vs_service_put ( svc ) ; out_unlock : mutex_unlock ( & __ip_vs_mutex ) ; out_dec : ip_vs_use_count_dec ( ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_SET_MAX ) return - EINVAL ; if ( len < 0 || len > MAX_ARG_LEN ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 static int32 makepol ( QPRS_STATE * state ) { int32 val = 0 , type ; int32 lenval = 0 ; char * strval = NULL ; int32 stack [ STACKDEPTH ] ; int32 lenstack = 0 ; uint16 flag = 0 ; <S2SV_StartBug> while ( ( type = gettoken_query ( state , & val , & lenval , & strval , & flag ) ) != END ) <S2SV_EndBug> { switch ( type ) { case VAL : pushval_asis ( state , VAL , strval , lenval , flag ) ; while ( lenstack && ( stack [ lenstack - 1 ] == ( int32 ) '&' || stack [ lenstack - 1 ] == ( int32 ) '!' ) ) { lenstack -- ; pushquery ( state , OPR , stack [ lenstack ] , 0 , 0 , 0 ) ; } break ; case OPR : if ( lenstack && val == ( int32 ) '|' ) pushquery ( state , OPR , val , 0 , 0 , 0 ) ; else { if ( lenstack == STACKDEPTH ) elog ( ERROR , \"stack<S2SV_blank>too<S2SV_blank>short\" ) ; stack [ lenstack ] = val ; lenstack ++ ; } break ; case OPEN : if ( makepol ( state ) == ERR ) return ERR ; while ( lenstack && ( stack [ lenstack - 1 ] == ( int32 ) '&' || stack [ lenstack - 1 ] == ( int32 ) '!' ) ) { lenstack -- ; pushquery ( state , OPR , stack [ lenstack ] , 0 , 0 , 0 ) ; } break ; case CLOSE : while ( lenstack ) { lenstack -- ; pushquery ( state , OPR , stack [ lenstack ] , 0 , 0 , 0 ) ; } ; return END ; break ; case ERR : default : ereport ( ERROR , ( errcode ( ERRCODE_SYNTAX_ERROR ) , errmsg ( \"syntax<S2SV_blank>error\" ) ) ) ; return ERR ; } } while ( lenstack ) { lenstack -- ; pushquery ( state , OPR , stack [ lenstack ] , 0 , 0 , 0 ) ; } ; return END ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; check_stack_depth ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static expr_ty ast_for_call ( struct compiling * c , const node * n , expr_ty func ) { int i , nargs , nkeywords , ngens ; asdl_seq * args ; asdl_seq * keywords ; expr_ty vararg = NULL , kwarg = NULL ; REQ ( n , arglist ) ; nargs = 0 ; nkeywords = 0 ; ngens = 0 ; for ( i = 0 ; i < NCH ( n ) ; i ++ ) { node * ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == argument ) { if ( NCH ( ch ) == 1 ) nargs ++ ; else if ( TYPE ( CHILD ( ch , 1 ) ) == comp_for ) ngens ++ ; else nkeywords ++ ; } } if ( ngens > 1 || ( ngens && ( nargs || nkeywords ) ) ) { ast_error ( n , \"Generator<S2SV_blank>expression<S2SV_blank>must<S2SV_blank>be<S2SV_blank>parenthesized<S2SV_blank>\" \"if<S2SV_blank>not<S2SV_blank>sole<S2SV_blank>argument\" ) ; return NULL ; } if ( nargs + nkeywords + ngens > 255 ) { ast_error ( n , \"more<S2SV_blank>than<S2SV_blank>255<S2SV_blank>arguments\" ) ; return NULL ; } args = asdl_seq_new ( nargs + ngens , c -> c_arena ) ; if ( ! args ) return NULL ; keywords = asdl_seq_new ( nkeywords , c -> c_arena ) ; if ( ! keywords ) return NULL ; nargs = 0 ; nkeywords = 0 ; for ( i = 0 ; i < NCH ( n ) ; i ++ ) { node * ch = CHILD ( n , i ) ; if ( TYPE ( ch ) == argument ) { expr_ty e ; if ( NCH ( ch ) == 1 ) { if ( nkeywords ) { ast_error ( CHILD ( ch , 0 ) , \"non-keyword<S2SV_blank>arg<S2SV_blank>after<S2SV_blank>keyword<S2SV_blank>arg\" ) ; return NULL ; } if ( vararg ) { ast_error ( CHILD ( ch , 0 ) , \"only<S2SV_blank>named<S2SV_blank>arguments<S2SV_blank>may<S2SV_blank>follow<S2SV_blank>*expression\" ) ; return NULL ; } e = ast_for_expr ( c , CHILD ( ch , 0 ) ) ; if ( ! e ) return NULL ; asdl_seq_SET ( args , nargs ++ , e ) ; } else if ( TYPE ( CHILD ( ch , 1 ) ) == comp_for ) { e = ast_for_genexp ( c , ch ) ; if ( ! e ) return NULL ; asdl_seq_SET ( args , nargs ++ , e ) ; } else { keyword_ty kw ; identifier key ; int k ; <S2SV_StartBug> char * tmp ; <S2SV_EndBug> e = ast_for_expr ( c , CHILD ( ch , 0 ) ) ; if ( ! e ) return NULL ; if ( e -> kind == Lambda_kind ) { ast_error ( CHILD ( ch , 0 ) , \"lambda<S2SV_blank>cannot<S2SV_blank>contain<S2SV_blank>assignment\" ) ; return NULL ; } else if ( e -> kind != Name_kind ) { ast_error ( CHILD ( ch , 0 ) , \"keyword<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>an<S2SV_blank>expression\" ) ; return NULL ; } key = e -> v . Name . id ; if ( ! forbidden_check ( c , CHILD ( ch , 0 ) , PyUnicode_AsUTF8 ( key ) ) ) return NULL ; for ( k = 0 ; k < nkeywords ; k ++ ) { tmp = _PyUnicode_AsString ( ( ( keyword_ty ) asdl_seq_GET ( keywords , k ) ) -> arg ) ; if ( ! strcmp ( tmp , _PyUnicode_AsString ( key ) ) ) { ast_error ( CHILD ( ch , 0 ) , \"keyword<S2SV_blank>argument<S2SV_blank>repeated\" ) ; return NULL ; } } e = ast_for_expr ( c , CHILD ( ch , 2 ) ) ; if ( ! e ) return NULL ; kw = keyword ( key , e , c -> c_arena ) ; if ( ! kw ) return NULL ; asdl_seq_SET ( keywords , nkeywords ++ , kw ) ; } } else if ( TYPE ( ch ) == STAR ) { vararg = ast_for_expr ( c , CHILD ( n , i + 1 ) ) ; if ( ! vararg ) return NULL ; i ++ ; } else if ( TYPE ( ch ) == DOUBLESTAR ) { kwarg = ast_for_expr ( c , CHILD ( n , i + 1 ) ) ; if ( ! kwarg ) return NULL ; i ++ ; } } return Call ( func , args , keywords , vararg , kwarg , func -> lineno , func -> col_offset , c -> c_arena ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int k ; const\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10671\n\n```\nCWE-119 static void de_dotdot ( char * file ) { char * cp ; char * cp2 ; int l ; while ( ( cp = strstr ( file , \"//\" ) ) != ( char * ) 0 ) { for ( cp2 = cp + 2 ; * cp2 == '/' ; ++ cp2 ) continue ; ( void ) strcpy ( cp + 1 , cp2 ) ; } while ( strncmp ( file , \"./\" , 2 ) == 0 ) ( void ) memmove ( file , file + 2 , strlen ( file ) - 1 ) ; while ( ( cp = strstr ( file , \"/./\" ) ) != ( char * ) 0 ) <S2SV_StartBug> ( void ) memmove ( cp , cp + 2 , strlen ( file ) - 1 ) ; <S2SV_EndBug> for ( ; ; ) { while ( strncmp ( file , \"../\" , 3 ) == 0 ) ( void ) memmove ( file , file + 3 , strlen ( file ) - 2 ) ; cp = strstr ( file , \"/../\" ) ; if ( cp == ( char * ) 0 ) break ; for ( cp2 = cp - 1 ; cp2 >= file && * cp2 != '/' ; -- cp2 ) continue ; ( void ) strcpy ( cp2 + 1 , cp + 4 ) ; } while ( ( l = strlen ( file ) ) > 3 && strcmp ( ( cp = file + l - 3 ) , \"/..\" ) == 0 ) { for ( cp2 = cp - 1 ; cp2 >= file && * cp2 != '/' ; -- cp2 ) continue ; if ( cp2 < file ) break ; * cp2 = '\\\\0' ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , strlen ( cp <S2SV_ModEnd> ) - 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7417\n\n```\nCWE-20 SPL_METHOD ( Array , unserialize ) { spl_array_object * intern = ( spl_array_object * ) zend_object_store_get_object ( getThis ( ) TSRMLS_CC ) ; char * buf ; int buf_len ; const unsigned char * p , * s ; php_unserialize_data_t var_hash ; zval * pmembers , * pflags = NULL ; HashTable * aht ; long flags ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) TSRMLS_CC , \"s\" , & buf , & buf_len ) == FAILURE ) { return ; } if ( buf_len == 0 ) { return ; } aht = spl_array_get_hash_table ( intern , 0 TSRMLS_CC ) ; if ( aht -> nApplyCount > 0 ) { zend_error ( E_WARNING , \"Modification<S2SV_blank>of<S2SV_blank>ArrayObject<S2SV_blank>during<S2SV_blank>sorting<S2SV_blank>is<S2SV_blank>prohibited\" ) ; return ; } s = p = ( const unsigned char * ) buf ; PHP_VAR_UNSERIALIZE_INIT ( var_hash ) ; if ( * p != 'x' || * ++ p != ':' ) { goto outexcept ; } ++ p ; ALLOC_INIT_ZVAL ( pflags ) ; if ( ! php_var_unserialize ( & pflags , & p , s + buf_len , & var_hash TSRMLS_CC ) || Z_TYPE_P ( pflags ) != IS_LONG ) { goto outexcept ; } var_push_dtor ( & var_hash , & pflags ) ; -- p ; flags = Z_LVAL_P ( pflags ) ; if ( * p != ';' ) { goto outexcept ; } ++ p ; if ( * p != 'm' ) { if ( * p != 'a' && * p != 'O' && * p != 'C' && * p != 'r' ) { goto outexcept ; } intern -> ar_flags &= ~ SPL_ARRAY_CLONE_MASK ; intern -> ar_flags |= flags & SPL_ARRAY_CLONE_MASK ; zval_ptr_dtor ( & intern -> array ) ; ALLOC_INIT_ZVAL ( intern -> array ) ; <S2SV_StartBug> if ( ! php_var_unserialize ( & intern -> array , & p , s + buf_len , & var_hash TSRMLS_CC ) ) { <S2SV_EndBug> goto outexcept ; } var_push_dtor ( & var_hash , & intern -> array ) ; } if ( * p != ';' ) { goto outexcept ; } ++ p ; if ( * p != 'm' || * ++ p != ':' ) { goto outexcept ; } ++ p ; ALLOC_INIT_ZVAL ( pmembers ) ; if ( ! php_var_unserialize ( & pmembers , & p , s + buf_len , & var_hash TSRMLS_CC ) || Z_TYPE_P ( pmembers ) != IS_ARRAY ) { zval_ptr_dtor ( & pmembers ) ; goto outexcept ; } var_push_dtor ( & var_hash , & pmembers ) ; if ( ! intern -> std . properties ) { rebuild_object_properties ( & intern -> std ) ; } zend_hash_copy ( intern -> std . properties , Z_ARRVAL_P ( pmembers ) , ( copy_ctor_func_t ) zval_add_ref , ( void * ) NULL , sizeof ( zval * ) ) ; zval_ptr_dtor ( & pmembers ) ; PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; if ( pflags ) { zval_ptr_dtor ( & pflags ) ; } return ; outexcept : PHP_VAR_UNSERIALIZE_DESTROY ( var_hash ) ; if ( pflags ) { zval_ptr_dtor ( & pflags ) ; } zend_throw_exception_ex ( spl_ce_UnexpectedValueException , 0 TSRMLS_CC , \"Error<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%ld<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , ( long ) ( ( char * ) p - buf ) , buf_len ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> var_hash TSRMLS_CC ) || ( Z_TYPE_P ( intern -> array ) != IS_ARRAY && Z_TYPE_P ( intern -> array ) != IS_OBJECT ) ) { zval_ptr_dtor ( & intern -> array ) ; <S2SV_ModEnd> goto outexcept ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 int pci_emul_alloc_pbar ( struct pci_vdev * pdi , int idx , uint64_t hostbase , enum pcibar_type type , uint64_t size ) { int error ; uint64_t * baseptr , limit , addr , mask , lobits , bar ; <S2SV_StartBug> assert ( idx >= 0 && idx <= PCI_BARMAX ) ; <S2SV_EndBug> if ( ( size & ( size - 1 ) ) != 0 ) size = 1UL << flsl ( size ) ; if ( type == PCIBAR_IO ) { if ( size < 4 ) size = 4 ; } else { if ( size < 16 ) size = 16 ; } switch ( type ) { case PCIBAR_NONE : baseptr = NULL ; addr = mask = lobits = 0 ; break ; case PCIBAR_IO : baseptr = & pci_emul_iobase ; limit = PCI_EMUL_IOLIMIT ; mask = PCIM_BAR_IO_BASE ; lobits = PCIM_BAR_IO_SPACE ; break ; <S2SV_StartBug> case PCIBAR_MEM64 : <S2SV_EndBug> if ( ! skip_pci_mem64bar_workaround && ( size <= 32 * 1024 * 1024 ) ) { baseptr = & pci_emul_membase32 ; limit = PCI_EMUL_MEMLIMIT32 ; mask = PCIM_BAR_MEM_BASE ; lobits = PCIM_BAR_MEM_SPACE | PCIM_BAR_MEM_64 ; break ; } if ( size == 0x100000000UL ) baseptr = & hostbase ; else baseptr = & pci_emul_membase64 ; limit = PCI_EMUL_MEMLIMIT64 ; mask = PCIM_BAR_MEM_BASE ; lobits = PCIM_BAR_MEM_SPACE | PCIM_BAR_MEM_64 | PCIM_BAR_MEM_PREFETCH ; break ; case PCIBAR_MEM32 : baseptr = & pci_emul_membase32 ; limit = PCI_EMUL_MEMLIMIT32 ; mask = PCIM_BAR_MEM_BASE ; lobits = PCIM_BAR_MEM_SPACE | PCIM_BAR_MEM_32 ; break ; default : <S2SV_StartBug> printf ( \"%s:<S2SV_blank>invalid<S2SV_blank>bar<S2SV_blank>type<S2SV_blank>%d\\\\n\" , __func__ , type ) ; <S2SV_EndBug> <S2SV_StartBug> assert ( 0 ) ; <S2SV_EndBug> } if ( baseptr != NULL ) { error = pci_emul_alloc_resource ( baseptr , limit , size , & addr ) ; if ( error != 0 ) return error ; } pdi -> bar [ idx ] . type = type ; pdi -> bar [ idx ] . addr = addr ; pdi -> bar [ idx ] . size = size ; bar = ( addr & mask ) | lobits ; pci_set_cfgdata32 ( pdi , PCIR_BAR ( idx ) , bar ) ; if ( type == PCIBAR_MEM64 ) { <S2SV_StartBug> assert ( idx + 1 <= PCI_BARMAX ) ; <S2SV_EndBug> pdi -> bar [ idx + 1 ] . type = PCIBAR_MEMHI64 ; pci_set_cfgdata32 ( pdi , PCIR_BAR ( idx + 1 ) , bar >> 32 ) ; } register_bar ( pdi , idx ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , bar ; <S2SV_ModEnd> if ( ( <S2SV_ModStart> case PCIBAR_MEM64 : if ( idx + 1 > PCI_BARMAX ) { pr_err ( \"%s:<S2SV_blank>invalid<S2SV_blank>bar<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>MEM64<S2SV_blank>type\\\\n\" , __func__ , idx ) ; return - 1 ; } <S2SV_ModStart> ; default : pr_err <S2SV_ModEnd> ( \"%s:<S2SV_blank>invalid<S2SV_blank>bar<S2SV_blank>type<S2SV_blank>%d\\\\n\" , <S2SV_ModStart> type ) ; return - 1 <S2SV_ModEnd> ; } if <S2SV_ModStart> PCIBAR_MEM64 ) { <S2SV_ModEnd> pdi -> bar\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-667(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12658\n\n```\nCWE-667 static void * gp_worker_main ( void * pvt ) { struct gp_thread * t = ( struct gp_thread * ) pvt ; struct gp_query * q = NULL ; char dummy = 0 ; int ret ; while ( ! t -> pool -> shutdown ) { gp_debug_set_conn_id ( 0 ) ; pthread_mutex_lock ( & t -> cond_mutex ) ; while ( t -> query == NULL ) { pthread_cond_wait ( & t -> cond_wakeup , & t -> cond_mutex ) ; <S2SV_StartBug> if ( t -> pool -> shutdown ) { <S2SV_EndBug> pthread_exit ( NULL ) ; } } q = t -> query ; t -> query = NULL ; pthread_mutex_unlock ( & t -> cond_mutex ) ; gp_debug_set_conn_id ( gp_conn_get_cid ( q -> conn ) ) ; GPDEBUGN ( 3 , \"[status]<S2SV_blank>Handling<S2SV_blank>query<S2SV_blank>input:<S2SV_blank>%p<S2SV_blank>(%zu)\\\\n\" , q -> buffer , q -> buflen ) ; gp_handle_query ( t -> pool , q ) ; GPDEBUGN ( 3 , \"[status]<S2SV_blank>Handling<S2SV_blank>query<S2SV_blank>output:<S2SV_blank>%p<S2SV_blank>(%zu)\\\\n\" , q -> buffer , q -> buflen ) ; pthread_mutex_lock ( & t -> pool -> lock ) ; q -> next = t -> pool -> reply_list ; t -> pool -> reply_list = q ; if ( ! t -> pool -> shutdown ) { LIST_DEL ( t -> pool -> busy_list , t ) ; LIST_ADD ( t -> pool -> free_list , t ) ; } pthread_mutex_unlock ( & t -> pool -> lock ) ; ret = write ( t -> pool -> sig_pipe [ 1 ] , & dummy , 1 ) ; if ( ret == - 1 ) { GPERROR ( \"Failed<S2SV_blank>to<S2SV_blank>signal<S2SV_blank>dispatcher!\" ) ; } } pthread_exit ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> shutdown ) { pthread_mutex_unlock ( & t -> cond_mutex ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3955\n\n```\nCWE-119 int usbip_recv_xbuff ( struct usbip_device * ud , struct urb * urb ) { int ret ; int size ; if ( ud -> side == USBIP_STUB ) { if ( usb_pipein ( urb -> pipe ) ) return 0 ; size = urb -> transfer_buffer_length ; } else { if ( usb_pipeout ( urb -> pipe ) ) return 0 ; size = urb -> actual_length ; } if ( ! ( size > 0 ) ) return 0 ; <S2SV_StartBug> ret = usbip_recv ( ud -> tcp_socket , urb -> transfer_buffer , size ) ; <S2SV_EndBug> if ( ret != size ) { dev_err ( & urb -> dev -> dev , \"recv<S2SV_blank>xbuf,<S2SV_blank>%d\\\\n\" , ret ) ; if ( ud -> side == USBIP_STUB ) { usbip_event_add ( ud , SDEV_EVENT_ERROR_TCP ) ; <S2SV_StartBug> } else { <S2SV_EndBug> usbip_event_add ( ud , VDEV_EVENT_ERROR_TCP ) ; return - EPIPE ; } } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; if ( size > urb -> transfer_buffer_length ) { <S2SV_ModEnd> if ( ud <S2SV_ModStart> SDEV_EVENT_ERROR_TCP ) ; return 0 ; <S2SV_ModStart> ; } } ret = usbip_recv ( ud -> tcp_socket , urb -> transfer_buffer , size ) ; if ( ret != size ) { dev_err ( & urb -> dev -> dev , \"recv<S2SV_blank>xbuf,<S2SV_blank>%d\\\\n\" , ret ) ; if ( ud -> side == USBIP_STUB ) { usbip_event_add ( ud , SDEV_EVENT_ERROR_TCP ) ; } else { usbip_event_add ( ud , VDEV_EVENT_ERROR_TCP ) ; return - EPIPE ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_ext_handle_uninitialized_extents ( handle_t * handle , struct inode * inode , struct ext4_map_blocks * map , struct ext4_ext_path * path , int flags , unsigned int allocated , ext4_fsblk_t newblock ) { int ret = 0 ; int err = 0 ; ext4_io_end_t * io = ext4_inode_aio ( inode ) ; ext_debug ( \"ext4_ext_handle_uninitialized_extents:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical<S2SV_blank>\" \"block<S2SV_blank>%llu,<S2SV_blank>max_blocks<S2SV_blank>%u,<S2SV_blank>flags<S2SV_blank>%x,<S2SV_blank>allocated<S2SV_blank>%u\\\\n\" , inode -> i_ino , ( unsigned long long ) map -> m_lblk , map -> m_len , flags , allocated ) ; ext4_ext_show_leaf ( inode , path ) ; trace_ext4_ext_handle_uninitialized_extents ( inode , map , allocated , newblock ) ; if ( ( flags & EXT4_GET_BLOCKS_PRE_IO ) ) { ret = ext4_split_unwritten_extents ( handle , inode , map , path , flags ) ; if ( ret <= 0 ) goto out ; if ( io ) ext4_set_io_unwritten_flag ( inode , io ) ; else ext4_set_inode_state ( inode , EXT4_STATE_DIO_UNWRITTEN ) ; if ( ext4_should_dioread_nolock ( inode ) ) map -> m_flags |= EXT4_MAP_UNINIT ; goto out ; } if ( ( flags & EXT4_GET_BLOCKS_CONVERT ) ) { <S2SV_StartBug> ret = ext4_convert_unwritten_extents_endio ( handle , inode , <S2SV_EndBug> path ) ; if ( ret >= 0 ) { ext4_update_inode_fsync_trans ( handle , inode , 1 ) ; err = check_eofblocks_fl ( handle , inode , map -> m_lblk , path , map -> m_len ) ; } else err = ret ; goto out2 ; } if ( flags & EXT4_GET_BLOCKS_UNINIT_EXT ) goto map_out ; if ( ( flags & EXT4_GET_BLOCKS_CREATE ) == 0 ) { map -> m_flags |= EXT4_MAP_UNWRITTEN ; goto out1 ; } ret = ext4_ext_convert_to_initialized ( handle , inode , map , path ) ; if ( ret >= 0 ) ext4_update_inode_fsync_trans ( handle , inode , 1 ) ; out : if ( ret <= 0 ) { err = ret ; goto out2 ; } else allocated = ret ; map -> m_flags |= EXT4_MAP_NEW ; if ( allocated > map -> m_len ) { unmap_underlying_metadata_blocks ( inode -> i_sb -> s_bdev , newblock + map -> m_len , allocated - map -> m_len ) ; allocated = map -> m_len ; } if ( flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE ) { unsigned int reserved_clusters ; reserved_clusters = get_reserved_cluster_alloc ( inode , map -> m_lblk , map -> m_len ) ; if ( reserved_clusters ) ext4_da_update_reserve_space ( inode , reserved_clusters , 0 ) ; } map_out : map -> m_flags |= EXT4_MAP_MAPPED ; if ( ( flags & EXT4_GET_BLOCKS_KEEP_SIZE ) == 0 ) { err = check_eofblocks_fl ( handle , inode , map -> m_lblk , path , map -> m_len ) ; if ( err < 0 ) goto out2 ; } out1 : if ( allocated > map -> m_len ) allocated = map -> m_len ; ext4_ext_show_leaf ( inode , path ) ; map -> m_pblk = newblock ; map -> m_len = allocated ; out2 : if ( path ) { ext4_ext_drop_refs ( path ) ; kfree ( path ) ; } return err ? err : allocated ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , inode , map ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12460\n\n```\nCWE-476 av_cold void ff_mpv_idct_init ( MpegEncContext * s ) <S2SV_StartBug> { <S2SV_EndBug> ff_idctdsp_init ( & s -> idsp , s -> avctx ) ; if ( s -> alternate_scan ) { ff_init_scantable ( s -> idsp . idct_permutation , & s -> inter_scantable , ff_alternate_vertical_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_scantable , ff_alternate_vertical_scan ) ; } else { ff_init_scantable ( s -> idsp . idct_permutation , & s -> inter_scantable , ff_zigzag_direct ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_scantable , ff_zigzag_direct ) ; } ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_h_scantable , ff_alternate_horizontal_scan ) ; ff_init_scantable ( s -> idsp . idct_permutation , & s -> intra_v_scantable , ff_alternate_vertical_scan ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { if ( s -> codec_id == AV_CODEC_ID_MPEG4 ) s -> idsp . mpeg4_studio_profile = s -> studio_profile ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static void handle_associated_event ( struct cpu_hw_events * cpuc , int idx , struct perf_sample_data * data , struct pt_regs * regs ) { struct perf_event * event = cpuc -> events [ idx ] ; struct hw_perf_event * hwc = & event -> hw ; mipspmu_event_update ( event , hwc , idx ) ; data -> period = event -> hw . last_period ; if ( ! mipspmu_event_set_period ( event , hwc , idx ) ) return ; <S2SV_StartBug> if ( perf_event_overflow ( event , 0 , data , regs ) ) <S2SV_EndBug> mipspmu -> disable_event ( idx ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( event , <S2SV_ModEnd> data , regs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11142\n\n```\nCWE-400 static inline int add_post_vars ( zval * arr , post_var_data_t * vars , zend_bool eof TSRMLS_DC ) { uint64_t max_vars = PG ( max_input_vars ) ; vars -> ptr = vars -> str . c ; vars -> end = vars -> str . c + vars -> str . len ; while ( add_post_var ( arr , vars , eof TSRMLS_CC ) ) { if ( ++ vars -> cnt > max_vars ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Input<S2SV_blank>variables<S2SV_blank>exceeded<S2SV_blank>%\" PRIu64 \".<S2SV_blank>\" \"To<S2SV_blank>increase<S2SV_blank>the<S2SV_blank>limit<S2SV_blank>change<S2SV_blank>max_input_vars<S2SV_blank>in<S2SV_blank>php.ini.\" , max_vars ) ; return FAILURE ; } } <S2SV_StartBug> if ( ! eof ) { <S2SV_EndBug> memmove ( vars -> str . c , vars -> ptr , vars -> str . len = vars -> end - vars -> ptr ) ; } return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! eof && vars -> str . c != vars -> ptr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5352\n\n```\nCWE-000 OM_uint32 gss_krb5int_export_lucid_sec_context ( OM_uint32 * minor_status , const gss_ctx_id_t context_handle , const gss_OID desired_object , gss_buffer_set_t * data_set ) { krb5_error_code kret = 0 ; OM_uint32 retval ; krb5_gss_ctx_id_t ctx = ( krb5_gss_ctx_id_t ) context_handle ; void * lctx = NULL ; int version = 0 ; gss_buffer_desc rep ; retval = GSS_S_FAILURE ; * minor_status = 0 ; * data_set = GSS_C_NO_BUFFER_SET ; <S2SV_StartBug> retval = generic_gss_oid_decompose ( minor_status , <S2SV_EndBug> GSS_KRB5_EXPORT_LUCID_SEC_CONTEXT_OID , GSS_KRB5_EXPORT_LUCID_SEC_CONTEXT_OID_LENGTH , desired_object , & version ) ; if ( GSS_ERROR ( retval ) ) return retval ; switch ( version ) { case 1 : kret = make_external_lucid_ctx_v1 ( ( krb5_pointer ) ctx , version , & lctx ) ; break ; default : kret = ( OM_uint32 ) KG_LUCID_VERSION ; break ; } if ( kret ) goto error_out ; rep . value = & lctx ; rep . length = sizeof ( lctx ) ; retval = generic_gss_add_buffer_set_member ( minor_status , & rep , data_set ) ; if ( GSS_ERROR ( retval ) ) goto error_out ; error_out : if ( * minor_status == 0 ) * minor_status = ( OM_uint32 ) kret ; return ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = GSS_C_NO_BUFFER_SET ; if ( ctx -> terminated || ! ctx -> established ) { * minor_status = KG_CTX_INCOMPLETE ; return GSS_S_NO_CONTEXT ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8825\n\n```\nCWE-476 static int mailimf_group_parse ( const char * message , size_t length , size_t * indx , struct mailimf_group * * result ) { size_t cur_token ; char * display_name ; struct mailimf_mailbox_list * mailbox_list ; struct mailimf_group * group ; int r ; int res ; <S2SV_StartBug> cur_token = * indx ; <S2SV_EndBug> mailbox_list = NULL ; r = mailimf_display_name_parse ( message , length , & cur_token , & display_name ) ; if ( r != MAILIMF_NO_ERROR ) { res = r ; goto err ; } r = mailimf_colon_parse ( message , length , & cur_token ) ; if ( r != MAILIMF_NO_ERROR ) { res = r ; goto free_display_name ; } r = mailimf_mailbox_list_parse ( message , length , & cur_token , & mailbox_list ) ; switch ( r ) { case MAILIMF_NO_ERROR : break ; case MAILIMF_ERROR_PARSE : r = mailimf_cfws_parse ( message , length , & cur_token ) ; if ( ( r != MAILIMF_NO_ERROR ) && ( r != MAILIMF_ERROR_PARSE ) ) { <S2SV_StartBug> res = r ; <S2SV_EndBug> goto free_display_name ; } break ; default : res = r ; goto free_display_name ; } r = mailimf_semi_colon_parse ( message , length , & cur_token ) ; if ( r != MAILIMF_NO_ERROR ) { res = r ; goto free_mailbox_list ; } group = mailimf_group_new ( display_name , mailbox_list ) ; if ( group == NULL ) { res = MAILIMF_ERROR_MEMORY ; goto free_mailbox_list ; } * indx = cur_token ; * result = group ; return MAILIMF_NO_ERROR ; free_mailbox_list : if ( mailbox_list != NULL ) { mailimf_mailbox_list_free ( mailbox_list ) ; } free_display_name : mailimf_display_name_free ( display_name ) ; err : return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int res ; clist * list ; <S2SV_ModStart> res = r ; goto free_display_name ; } list = clist_new ( ) ; if ( list == NULL ) { res = MAILIMF_ERROR_MEMORY ; goto free_display_name ; } mailbox_list = mailimf_mailbox_list_new ( list ) ; if ( mailbox_list == NULL ) { res = MAILIMF_ERROR_MEMORY ; clist_free ( list )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 void handle_ld_nf ( u32 insn , struct pt_regs * regs ) { int rd = ( ( insn >> 25 ) & 0x1f ) ; int from_kernel = ( regs -> tstate & TSTATE_PRIV ) != 0 ; unsigned long * reg ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , 0 ) ; <S2SV_EndBug> maybe_flush_windows ( 0 , 0 , rd , from_kernel ) ; reg = fetch_reg_addr ( rd , regs ) ; if ( from_kernel || rd < 16 ) { reg [ 0 ] = 0 ; if ( ( insn & 0x780000 ) == 0x180000 ) reg [ 1 ] = 0 ; } else if ( test_thread_flag ( TIF_32BIT ) ) { put_user ( 0 , ( int __user * ) reg ) ; if ( ( insn & 0x780000 ) == 0x180000 ) put_user ( 0 , ( ( int __user * ) reg ) + 1 ) ; } else { put_user ( 0 , ( unsigned long __user * ) reg ) ; if ( ( insn & 0x780000 ) == 0x180000 ) put_user ( 0 , ( unsigned long __user * ) reg + 1 ) ; } advance ( regs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3417\n\n```\nCWE-000 void ff_h264_free_tables ( H264Context * h , int free_rbsp ) { int i ; H264Context * hx ; av_freep ( & h -> intra4x4_pred_mode ) ; av_freep ( & h -> chroma_pred_mode_table ) ; av_freep ( & h -> cbp_table ) ; av_freep ( & h -> mvd_table [ 0 ] ) ; av_freep ( & h -> mvd_table [ 1 ] ) ; av_freep ( & h -> direct_table ) ; av_freep ( & h -> non_zero_count ) ; av_freep ( & h -> slice_table_base ) ; h -> slice_table = NULL ; av_freep ( & h -> list_counts ) ; av_freep ( & h -> mb2b_xy ) ; av_freep ( & h -> mb2br_xy ) ; av_buffer_pool_uninit ( & h -> qscale_table_pool ) ; av_buffer_pool_uninit ( & h -> mb_type_pool ) ; av_buffer_pool_uninit ( & h -> motion_val_pool ) ; av_buffer_pool_uninit ( & h -> ref_index_pool ) ; if ( free_rbsp && h -> DPB ) { for ( i = 0 ; i < H264_MAX_PICTURE_COUNT ; i ++ ) ff_h264_unref_picture ( h , & h -> DPB [ i ] ) ; <S2SV_StartBug> av_freep ( & h -> DPB ) ; <S2SV_EndBug> } else if ( h -> DPB ) { for ( i = 0 ; i < H264_MAX_PICTURE_COUNT ; i ++ ) h -> DPB [ i ] . needs_realloc = 1 ; } h -> cur_pic_ptr = NULL ; for ( i = 0 ; i < H264_MAX_THREADS ; i ++ ) { hx = h -> thread_context [ i ] ; if ( ! hx ) continue ; av_freep ( & hx -> top_borders [ 1 ] ) ; av_freep ( & hx -> top_borders [ 0 ] ) ; av_freep ( & hx -> bipred_scratchpad ) ; av_freep ( & hx -> edge_emu_buffer ) ; av_freep ( & hx -> dc_val_base ) ; av_freep ( & hx -> er . mb_index2xy ) ; av_freep ( & hx -> er . error_status_table ) ; av_freep ( & hx -> er . er_temp_buffer ) ; av_freep ( & hx -> er . mbintra_table ) ; av_freep ( & hx -> er . mbskip_table ) ; if ( free_rbsp ) { av_freep ( & hx -> rbsp_buffer [ 1 ] ) ; av_freep ( & hx -> rbsp_buffer [ 0 ] ) ; hx -> rbsp_buffer_size [ 0 ] = 0 ; hx -> rbsp_buffer_size [ 1 ] = 0 ; } if ( i ) av_freep ( & h -> thread_context [ i ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; memset ( h -> delayed_pic , 0 , sizeof ( h -> delayed_pic ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int load_segment_descriptor ( struct x86_emulate_ctxt * ctxt , u16 selector , int seg ) { u8 cpl = ctxt -> ops -> cpl ( ctxt ) ; <S2SV_StartBug> return __load_segment_descriptor ( ctxt , selector , seg , cpl , false ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpl , false , NULL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2324\n\n```\nCWE-119 static void mark_commit ( struct commit * c , void * data ) { <S2SV_StartBug> mark_object ( & c -> object , NULL , NULL , data ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , NULL , <S2SV_ModEnd> data ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int misaligned_load ( struct pt_regs * regs , __u32 opcode , int displacement_not_indexed , int width_shift , int do_sign_extend ) { int error ; int destreg ; __u64 address ; error = generate_and_check_address ( regs , opcode , displacement_not_indexed , width_shift , & address ) ; if ( error < 0 ) { return error ; } <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 , 0 , regs , address ) ; <S2SV_EndBug> destreg = ( opcode >> 4 ) & 0x3f ; if ( user_mode ( regs ) ) { __u64 buffer ; if ( ! access_ok ( VERIFY_READ , ( unsigned long ) address , 1UL << width_shift ) ) { return - 1 ; } if ( __copy_user ( & buffer , ( const void * ) ( int ) address , ( 1 << width_shift ) ) > 0 ) { return - 1 ; } switch ( width_shift ) { case 1 : if ( do_sign_extend ) { regs -> regs [ destreg ] = ( __u64 ) ( __s64 ) * ( __s16 * ) & buffer ; } else { regs -> regs [ destreg ] = ( __u64 ) * ( __u16 * ) & buffer ; } break ; case 2 : regs -> regs [ destreg ] = ( __u64 ) ( __s64 ) * ( __s32 * ) & buffer ; break ; case 3 : regs -> regs [ destreg ] = buffer ; break ; default : printk ( \"Unexpected<S2SV_blank>width_shift<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>misaligned_load,<S2SV_blank>PC=%08lx\\\\n\" , width_shift , ( unsigned long ) regs -> pc ) ; break ; } } else { __u64 lo , hi ; switch ( width_shift ) { case 1 : misaligned_kernel_word_load ( address , do_sign_extend , & regs -> regs [ destreg ] ) ; break ; case 2 : asm ( \"ldlo.l<S2SV_blank>%1,<S2SV_blank>0,<S2SV_blank>%0\" : \"=r\" ( lo ) : \"r\" ( address ) ) ; asm ( \"ldhi.l<S2SV_blank>%1,<S2SV_blank>3,<S2SV_blank>%0\" : \"=r\" ( hi ) : \"r\" ( address ) ) ; regs -> regs [ destreg ] = lo | hi ; break ; case 3 : asm ( \"ldlo.q<S2SV_blank>%1,<S2SV_blank>0,<S2SV_blank>%0\" : \"=r\" ( lo ) : \"r\" ( address ) ) ; asm ( \"ldhi.q<S2SV_blank>%1,<S2SV_blank>7,<S2SV_blank>%0\" : \"=r\" ( hi ) : \"r\" ( address ) ) ; regs -> regs [ destreg ] = lo | hi ; break ; default : printk ( \"Unexpected<S2SV_blank>width_shift<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>misaligned_load,<S2SV_blank>PC=%08lx\\\\n\" , width_shift , ( unsigned long ) regs -> pc ) ; break ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , address\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-264 static struct dst_entry * inet6_csk_route_socket ( struct sock * sk , struct flowi6 * fl6 ) { struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct in6_addr * final_p , final ; struct dst_entry * dst ; memset ( fl6 , 0 , sizeof ( * fl6 ) ) ; fl6 -> flowi6_proto = sk -> sk_protocol ; fl6 -> daddr = sk -> sk_v6_daddr ; fl6 -> saddr = np -> saddr ; fl6 -> flowlabel = np -> flow_label ; IP6_ECN_flow_xmit ( sk , fl6 -> flowlabel ) ; fl6 -> flowi6_oif = sk -> sk_bound_dev_if ; fl6 -> flowi6_mark = sk -> sk_mark ; fl6 -> fl6_sport = inet -> inet_sport ; fl6 -> fl6_dport = inet -> inet_dport ; security_sk_classify_flow ( sk , flowi6_to_flowi ( fl6 ) ) ; <S2SV_StartBug> final_p = fl6_update_dst ( fl6 , np -> opt , & final ) ; <S2SV_EndBug> <S2SV_StartBug> dst = __inet6_csk_dst_check ( sk , np -> dst_cookie ) ; <S2SV_EndBug> if ( ! dst ) { dst = ip6_dst_lookup_flow ( sk , fl6 , final_p ) ; if ( ! IS_ERR ( dst ) ) __inet6_csk_dst_store ( sk , dst , NULL , NULL ) ; } return dst ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; rcu_read_lock ( ) ; <S2SV_ModStart> ( fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt ) <S2SV_ModStart> final ) ; rcu_read_unlock ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13233\n\n```\nCWE-362 <S2SV_StartBug> static struct desc_struct * get_desc ( unsigned short sel ) <S2SV_EndBug> { struct desc_ptr gdt_desc = { 0 , 0 } ; unsigned long desc_base ; # ifdef CONFIG_MODIFY_LDT_SYSCALL if ( ( sel & SEGMENT_TI_MASK ) == SEGMENT_LDT ) { <S2SV_StartBug> struct desc_struct * desc = NULL ; <S2SV_EndBug> struct ldt_struct * ldt ; sel >>= 3 ; mutex_lock ( & current -> active_mm -> context . lock ) ; ldt = current -> active_mm -> context . ldt ; <S2SV_StartBug> if ( ldt && sel < ldt -> nr_entries ) <S2SV_EndBug> <S2SV_StartBug> desc = & ldt -> entries [ sel ] ; <S2SV_EndBug> mutex_unlock ( & current -> active_mm -> context . lock ) ; <S2SV_StartBug> return desc ; <S2SV_EndBug> } # endif native_store_gdt ( & gdt_desc ) ; desc_base = sel & ~ ( SEGMENT_RPL_MASK | SEGMENT_TI_MASK ) ; if ( desc_base > gdt_desc . size ) <S2SV_StartBug> return NULL ; <S2SV_EndBug> return ( struct desc_struct * ) ( gdt_desc . address + desc_base ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static bool get_desc ( <S2SV_ModStart> struct desc_struct * out , <S2SV_ModEnd> unsigned short sel <S2SV_ModStart> SEGMENT_LDT ) { bool success = false <S2SV_ModEnd> ; struct ldt_struct <S2SV_ModStart> -> nr_entries ) { * out = <S2SV_ModEnd> ldt -> entries <S2SV_ModStart> sel ] ; success = true ; } <S2SV_ModStart> ) ; return success <S2SV_ModEnd> ; } # <S2SV_ModStart> size ) return false ; * out = * <S2SV_ModEnd> ( struct desc_struct <S2SV_ModStart> desc_base ) ; return true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2383\n\n```\nCWE-200 static void adjust_branches ( struct bpf_prog * prog , int pos , int delta ) { struct bpf_insn * insn = prog -> insnsi ; int insn_cnt = prog -> len ; int i ; for ( i = 0 ; i < insn_cnt ; i ++ , insn ++ ) { if ( BPF_CLASS ( insn -> code ) != BPF_JMP || BPF_OP ( insn -> code ) == BPF_CALL || BPF_OP ( insn -> code ) == BPF_EXIT ) continue ; if ( i < pos && i + insn -> off + 1 > pos ) insn -> off += delta ; <S2SV_StartBug> else if ( i > pos && i + insn -> off + 1 < pos ) <S2SV_EndBug> insn -> off -= delta ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i > pos + delta <S2SV_ModStart> off + 1 <= pos + delta <S2SV_ModEnd> ) insn ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int indenterror ( struct tok_state * tok ) <S2SV_StartBug> { <S2SV_EndBug> if ( tok -> alterror ) { tok -> done = E_TABSPACE ; tok -> cur = tok -> inp ; <S2SV_StartBug> return 1 ; <S2SV_EndBug> } if ( tok -> altwarning ) { # ifdef PGEN PySys_WriteStderr ( \"inconsistent<S2SV_blank>use<S2SV_blank>of<S2SV_blank>tabs<S2SV_blank>and<S2SV_blank>spaces<S2SV_blank>\" \"in<S2SV_blank>indentation\\\\n\" ) ; # else PySys_FormatStderr ( \"%U:<S2SV_blank>inconsistent<S2SV_blank>use<S2SV_blank>of<S2SV_blank>tabs<S2SV_blank>and<S2SV_blank>spaces<S2SV_blank>\" \"in<S2SV_blank>indentation\\\\n\" , tok -> filename ) ; # endif tok -> altwarning = 0 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tok ) <S2SV_ModEnd> { tok -> <S2SV_ModStart> inp ; return ERRORTOKEN <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-287(认证问题)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3520\n\n```\nCWE-287 static int netlink_sendmsg ( struct kiocb * kiocb , struct socket * sock , struct msghdr * msg , size_t len ) { struct sock_iocb * siocb = kiocb_to_siocb ( kiocb ) ; struct sock * sk = sock -> sk ; struct netlink_sock * nlk = nlk_sk ( sk ) ; struct sockaddr_nl * addr = msg -> msg_name ; u32 dst_pid ; u32 dst_group ; struct sk_buff * skb ; int err ; struct scm_cookie scm ; if ( msg -> msg_flags & MSG_OOB ) return - EOPNOTSUPP ; if ( NULL == siocb -> scm ) siocb -> scm = & scm ; <S2SV_StartBug> err = scm_send ( sock , msg , siocb -> scm ) ; <S2SV_EndBug> if ( err < 0 ) return err ; if ( msg -> msg_namelen ) { err = - EINVAL ; if ( addr -> nl_family != AF_NETLINK ) goto out ; dst_pid = addr -> nl_pid ; dst_group = ffs ( addr -> nl_groups ) ; err = - EPERM ; if ( dst_group && ! netlink_capable ( sock , NL_NONROOT_SEND ) ) goto out ; } else { dst_pid = nlk -> dst_pid ; dst_group = nlk -> dst_group ; } if ( ! nlk -> pid ) { err = netlink_autobind ( sock ) ; if ( err ) goto out ; } err = - EMSGSIZE ; if ( len > sk -> sk_sndbuf - 32 ) goto out ; err = - ENOBUFS ; skb = alloc_skb ( len , GFP_KERNEL ) ; if ( skb == NULL ) goto out ; NETLINK_CB ( skb ) . pid = nlk -> pid ; NETLINK_CB ( skb ) . dst_group = dst_group ; memcpy ( NETLINK_CREDS ( skb ) , & siocb -> scm -> creds , sizeof ( struct ucred ) ) ; err = - EFAULT ; if ( memcpy_fromiovec ( skb_put ( skb , len ) , msg -> msg_iov , len ) ) { kfree_skb ( skb ) ; goto out ; } err = security_netlink_send ( sk , skb ) ; if ( err ) { kfree_skb ( skb ) ; goto out ; } if ( dst_group ) { atomic_inc ( & skb -> users ) ; netlink_broadcast ( sk , skb , dst_pid , dst_group , GFP_KERNEL ) ; } err = netlink_unicast ( sk , skb , dst_pid , msg -> msg_flags & MSG_DONTWAIT ) ; out : scm_destroy ( siocb -> scm ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> siocb -> scm , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0205\n\n```\nCWE-310 int ssl3_get_cert_verify ( SSL * s ) { EVP_PKEY * pkey = NULL ; unsigned char * p ; int al , ok , ret = 0 ; long n ; int type = 0 , i , j ; X509 * peer ; const EVP_MD * md = NULL ; EVP_MD_CTX mctx ; EVP_MD_CTX_init ( & mctx ) ; n = s -> method -> ssl_get_message ( s , SSL3_ST_SR_CERT_VRFY_A , SSL3_ST_SR_CERT_VRFY_B , - 1 , SSL3_RT_MAX_PLAIN_LENGTH , & ok ) ; if ( ! ok ) return ( ( int ) n ) ; if ( s -> session -> peer != NULL ) { peer = s -> session -> peer ; pkey = X509_get_pubkey ( peer ) ; type = X509_certificate_type ( peer , pkey ) ; } else { peer = NULL ; pkey = NULL ; } if ( s -> s3 -> tmp . message_type != SSL3_MT_CERTIFICATE_VERIFY ) { s -> s3 -> tmp . reuse_message = 1 ; <S2SV_StartBug> if ( ( peer != NULL ) && ( type & EVP_PKT_SIGN ) ) <S2SV_EndBug> { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_MISSING_VERIFY_MESSAGE ) ; goto f_err ; } ret = 1 ; goto end ; } if ( peer == NULL ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_NO_CLIENT_CERT_RECEIVED ) ; al = SSL_AD_UNEXPECTED_MESSAGE ; goto f_err ; } if ( ! ( type & EVP_PKT_SIGN ) ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_SIGNATURE_FOR_NON_SIGNING_CERTIFICATE ) ; al = SSL_AD_ILLEGAL_PARAMETER ; goto f_err ; } if ( s -> s3 -> change_cipher_spec ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_CCS_RECEIVED_EARLY ) ; al = SSL_AD_UNEXPECTED_MESSAGE ; goto f_err ; } p = ( unsigned char * ) s -> init_msg ; if ( n == 64 && ( pkey -> type == NID_id_GostR3410_94 || pkey -> type == NID_id_GostR3410_2001 ) ) { i = 64 ; } else { if ( SSL_USE_SIGALGS ( s ) ) { int rv = tls12_check_peer_sigalg ( & md , s , p , pkey ) ; if ( rv == - 1 ) { al = SSL_AD_INTERNAL_ERROR ; goto f_err ; } else if ( rv == 0 ) { al = SSL_AD_DECODE_ERROR ; goto f_err ; } # ifdef SSL_DEBUG fprintf ( stderr , \"USING<S2SV_blank>TLSv1.2<S2SV_blank>HASH<S2SV_blank>%s\\\\n\" , EVP_MD_name ( md ) ) ; # endif p += 2 ; n -= 2 ; } n2s ( p , i ) ; n -= 2 ; if ( i > n ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_LENGTH_MISMATCH ) ; al = SSL_AD_DECODE_ERROR ; goto f_err ; } } j = EVP_PKEY_size ( pkey ) ; if ( ( i > j ) || ( n > j ) || ( n <= 0 ) ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_WRONG_SIGNATURE_SIZE ) ; al = SSL_AD_DECODE_ERROR ; goto f_err ; } if ( SSL_USE_SIGALGS ( s ) ) { long hdatalen = 0 ; void * hdata ; hdatalen = BIO_get_mem_data ( s -> s3 -> handshake_buffer , & hdata ) ; if ( hdatalen <= 0 ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , ERR_R_INTERNAL_ERROR ) ; al = SSL_AD_INTERNAL_ERROR ; goto f_err ; } # ifdef SSL_DEBUG fprintf ( stderr , \"Using<S2SV_blank>TLS<S2SV_blank>1.2<S2SV_blank>with<S2SV_blank>client<S2SV_blank>verify<S2SV_blank>alg<S2SV_blank>%s\\\\n\" , EVP_MD_name ( md ) ) ; # endif if ( ! EVP_VerifyInit_ex ( & mctx , md , NULL ) || ! EVP_VerifyUpdate ( & mctx , hdata , hdatalen ) ) { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , ERR_R_EVP_LIB ) ; al = SSL_AD_INTERNAL_ERROR ; goto f_err ; } if ( EVP_VerifyFinal ( & mctx , p , i , pkey ) <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_SIGNATURE ) ; goto f_err ; } } else # ifndef OPENSSL_NO_RSA if ( pkey -> type == EVP_PKEY_RSA ) { i = RSA_verify ( NID_md5_sha1 , s -> s3 -> tmp . cert_verify_md , MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH , p , i , pkey -> pkey . rsa ) ; if ( i < 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_RSA_DECRYPT ) ; goto f_err ; } if ( i == 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_RSA_SIGNATURE ) ; goto f_err ; } } else # endif # ifndef OPENSSL_NO_DSA if ( pkey -> type == EVP_PKEY_DSA ) { j = DSA_verify ( pkey -> save_type , & ( s -> s3 -> tmp . cert_verify_md [ MD5_DIGEST_LENGTH ] ) , SHA_DIGEST_LENGTH , p , i , pkey -> pkey . dsa ) ; if ( j <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_DSA_SIGNATURE ) ; goto f_err ; } } else # endif # ifndef OPENSSL_NO_ECDSA if ( pkey -> type == EVP_PKEY_EC ) { j = ECDSA_verify ( pkey -> save_type , & ( s -> s3 -> tmp . cert_verify_md [ MD5_DIGEST_LENGTH ] ) , SHA_DIGEST_LENGTH , p , i , pkey -> pkey . ec ) ; if ( j <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_ECDSA_SIGNATURE ) ; goto f_err ; } } else # endif if ( pkey -> type == NID_id_GostR3410_94 || pkey -> type == NID_id_GostR3410_2001 ) { unsigned char signature [ 64 ] ; int idx ; EVP_PKEY_CTX * pctx = EVP_PKEY_CTX_new ( pkey , NULL ) ; EVP_PKEY_verify_init ( pctx ) ; if ( i != 64 ) { fprintf ( stderr , \"GOST<S2SV_blank>signature<S2SV_blank>length<S2SV_blank>is<S2SV_blank>%d\" , i ) ; } for ( idx = 0 ; idx < 64 ; idx ++ ) { signature [ 63 - idx ] = p [ idx ] ; } j = EVP_PKEY_verify ( pctx , signature , 64 , s -> s3 -> tmp . cert_verify_md , 32 ) ; EVP_PKEY_CTX_free ( pctx ) ; if ( j <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , SSL_R_BAD_ECDSA_SIGNATURE ) ; goto f_err ; } } else { SSLerr ( SSL_F_SSL3_GET_CERT_VERIFY , ERR_R_INTERNAL_ERROR ) ; al = SSL_AD_UNSUPPORTED_CERTIFICATE ; goto f_err ; } ret = 1 ; if ( 0 ) { f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; } end : if ( s -> s3 -> handshake_buffer ) { BIO_free ( s -> s3 -> handshake_buffer ) ; s -> s3 -> handshake_buffer = NULL ; s -> s3 -> flags &= ~ TLS1_FLAGS_KEEP_HANDSHAKE ; } EVP_MD_CTX_cleanup ( & mctx ) ; EVP_PKEY_free ( pkey ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> peer != NULL <S2SV_ModStart> peer != NULL <S2SV_ModEnd> ) { al\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-79(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17082\n\n```\nCWE-79 static int php_handler ( request_rec * r ) { php_struct * volatile ctx ; void * conf ; apr_bucket_brigade * volatile brigade ; apr_bucket * bucket ; apr_status_t rv ; request_rec * volatile parent_req = NULL ; TSRMLS_FETCH ( ) ; # define PHPAP_INI_OFF php_apache_ini_dtor ( r , parent_req TSRMLS_CC ) ; conf = ap_get_module_config ( r -> per_dir_config , & php5_module ) ; ctx = SG ( server_context ) ; if ( ctx == NULL || ( ctx && ctx -> request_processed && ! strcmp ( r -> protocol , \"INCLUDED\" ) ) ) { normal : ctx = SG ( server_context ) = apr_pcalloc ( r -> pool , sizeof ( * ctx ) ) ; apr_pool_cleanup_register ( r -> pool , ( void * ) & SG ( server_context ) , php_server_context_cleanup , apr_pool_cleanup_null ) ; ctx -> r = r ; ctx = NULL ; } else { parent_req = ctx -> r ; ctx -> r = r ; } apply_config ( conf ) ; if ( strcmp ( r -> handler , PHP_MAGIC_TYPE ) && strcmp ( r -> handler , PHP_SOURCE_MAGIC_TYPE ) && strcmp ( r -> handler , PHP_SCRIPT ) ) { if ( ! AP2 ( xbithack ) || strcmp ( r -> handler , \"text/html\" ) || ! ( r -> finfo . protection & APR_UEXECUTE ) ) { PHPAP_INI_OFF ; return DECLINED ; } } if ( r -> used_path_info == AP_REQ_REJECT_PATH_INFO && r -> path_info && r -> path_info [ 0 ] ) { PHPAP_INI_OFF ; return HTTP_NOT_FOUND ; } if ( ! AP2 ( engine ) ) { PHPAP_INI_OFF ; return DECLINED ; } if ( r -> finfo . filetype == 0 ) { php_apache_sapi_log_message_ex ( \"script<S2SV_blank>\\'%s\\'<S2SV_blank>not<S2SV_blank>found<S2SV_blank>or<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>stat\" , r TSRMLS_CC ) ; PHPAP_INI_OFF ; return HTTP_NOT_FOUND ; } if ( r -> finfo . filetype == APR_DIR ) { php_apache_sapi_log_message_ex ( \"attempt<S2SV_blank>to<S2SV_blank>invoke<S2SV_blank>directory<S2SV_blank>\\'%s\\'<S2SV_blank>as<S2SV_blank>script\" , r TSRMLS_CC ) ; PHPAP_INI_OFF ; return HTTP_FORBIDDEN ; } if ( r -> main == NULL || r -> subprocess_env != r -> main -> subprocess_env ) { ap_add_common_vars ( r ) ; ap_add_cgi_vars ( r ) ; } zend_first_try { if ( ctx == NULL ) { brigade = apr_brigade_create ( r -> pool , r -> connection -> bucket_alloc ) ; ctx = SG ( server_context ) ; ctx -> brigade = brigade ; if ( php_apache_request_ctor ( r , ctx TSRMLS_CC ) != SUCCESS ) { zend_bailout ( ) ; } } else { if ( ! parent_req ) { parent_req = ctx -> r ; } if ( parent_req && parent_req -> handler && strcmp ( parent_req -> handler , PHP_MAGIC_TYPE ) && strcmp ( parent_req -> handler , PHP_SOURCE_MAGIC_TYPE ) && strcmp ( parent_req -> handler , PHP_SCRIPT ) ) { if ( php_apache_request_ctor ( r , ctx TSRMLS_CC ) != SUCCESS ) { zend_bailout ( ) ; } } if ( parent_req && parent_req -> status != HTTP_OK && parent_req -> status != 413 && strcmp ( r -> protocol , \"INCLUDED\" ) ) { parent_req = NULL ; goto normal ; } ctx -> r = r ; brigade = ctx -> brigade ; } if ( AP2 ( last_modified ) ) { ap_update_mtime ( r , r -> finfo . mtime ) ; ap_set_last_modified ( r ) ; } if ( strncmp ( r -> handler , PHP_SOURCE_MAGIC_TYPE , sizeof ( PHP_SOURCE_MAGIC_TYPE ) - 1 ) == 0 ) { zend_syntax_highlighter_ini syntax_highlighter_ini ; php_get_highlight_struct ( & syntax_highlighter_ini ) ; highlight_file ( ( char * ) r -> filename , & syntax_highlighter_ini TSRMLS_CC ) ; } else { zend_file_handle zfd ; zfd . type = ZEND_HANDLE_FILENAME ; zfd . filename = ( char * ) r -> filename ; zfd . free_filename = 0 ; zfd . opened_path = NULL ; if ( ! parent_req ) { php_execute_script ( & zfd TSRMLS_CC ) ; } else { zend_execute_scripts ( ZEND_INCLUDE TSRMLS_CC , NULL , 1 , & zfd ) ; } apr_table_set ( r -> notes , \"mod_php_memory_usage\" , apr_psprintf ( ctx -> r -> pool , \"%\" APR_SIZE_T_FMT , zend_memory_peak_usage ( 1 TSRMLS_CC ) ) ) ; } } zend_end_try ( ) ; if ( ! parent_req ) { php_apache_request_dtor ( r TSRMLS_CC ) ; ctx -> request_processed = 1 ; <S2SV_StartBug> bucket = apr_bucket_eos_create ( r -> connection -> bucket_alloc ) ; <S2SV_EndBug> APR_BRIGADE_INSERT_TAIL ( brigade , bucket ) ; rv = ap_pass_brigade ( r -> output_filters , brigade ) ; if ( rv != APR_SUCCESS || r -> connection -> aborted ) { zend_first_try { php_handle_aborted_connection ( ) ; } zend_end_try ( ) ; } apr_brigade_cleanup ( brigade ) ; apr_pool_cleanup_run ( r -> pool , ( void * ) & SG ( server_context ) , php_server_context_cleanup ) ; } else { ctx -> r = parent_req ; } return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 1 ; apr_brigade_cleanup ( brigade ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0037\n\n```\nCWE-200 int raptor_turtle_writer_set_option ( raptor_turtle_writer * turtle_writer , raptor_option option , int value ) { if ( value < 0 || ! raptor_option_is_valid_for_area ( option , RAPTOR_OPTION_AREA_TURTLE_WRITER ) ) return 1 ; switch ( option ) { case RAPTOR_OPTION_WRITER_AUTO_INDENT : if ( value ) turtle_writer -> flags |= TURTLE_WRITER_AUTO_INDENT ; else turtle_writer -> flags &= ~ TURTLE_WRITER_AUTO_INDENT ; break ; case RAPTOR_OPTION_WRITER_INDENT_WIDTH : turtle_writer -> indent = value ; break ; case RAPTOR_OPTION_WRITER_AUTO_EMPTY : case RAPTOR_OPTION_WRITER_XML_VERSION : case RAPTOR_OPTION_WRITER_XML_DECLARATION : break ; case RAPTOR_OPTION_SCANNING : case RAPTOR_OPTION_ALLOW_NON_NS_ATTRIBUTES : case RAPTOR_OPTION_ALLOW_OTHER_PARSETYPES : case RAPTOR_OPTION_ALLOW_BAGID : case RAPTOR_OPTION_ALLOW_RDF_TYPE_RDF_LIST : case RAPTOR_OPTION_NORMALIZE_LANGUAGE : case RAPTOR_OPTION_NON_NFC_FATAL : case RAPTOR_OPTION_WARN_OTHER_PARSETYPES : case RAPTOR_OPTION_CHECK_RDF_ID : case RAPTOR_OPTION_HTML_TAG_SOUP : case RAPTOR_OPTION_MICROFORMATS : case RAPTOR_OPTION_HTML_LINK : case RAPTOR_OPTION_WWW_TIMEOUT : case RAPTOR_OPTION_STRICT : case RAPTOR_OPTION_NO_NET : case RAPTOR_OPTION_NO_FILE : <S2SV_StartBug> case RAPTOR_OPTION_RELATIVE_URIS : <S2SV_EndBug> case RAPTOR_OPTION_RESOURCE_BORDER : case RAPTOR_OPTION_LITERAL_BORDER : case RAPTOR_OPTION_BNODE_BORDER : case RAPTOR_OPTION_RESOURCE_FILL : case RAPTOR_OPTION_LITERAL_FILL : case RAPTOR_OPTION_BNODE_FILL : case RAPTOR_OPTION_JSON_CALLBACK : case RAPTOR_OPTION_JSON_EXTRA_DATA : case RAPTOR_OPTION_RSS_TRIPLES : case RAPTOR_OPTION_ATOM_ENTRY_URI : case RAPTOR_OPTION_PREFIX_ELEMENTS : case RAPTOR_OPTION_WRITE_BASE_URI : case RAPTOR_OPTION_WWW_HTTP_CACHE_CONTROL : case RAPTOR_OPTION_WWW_HTTP_USER_AGENT : case RAPTOR_OPTION_WWW_CERT_FILENAME : case RAPTOR_OPTION_WWW_CERT_TYPE : case RAPTOR_OPTION_WWW_CERT_PASSPHRASE : case RAPTOR_OPTION_WWW_SSL_VERIFY_PEER : case RAPTOR_OPTION_WWW_SSL_VERIFY_HOST : default : return - 1 ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> RAPTOR_OPTION_NO_FILE : case RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES : case\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7917\n\n```\nCWE-200 static void nfnetlink_rcv_batch ( struct sk_buff * skb , struct nlmsghdr * nlh , u_int16_t subsys_id ) { struct sk_buff * oskb = skb ; struct net * net = sock_net ( skb -> sk ) ; const struct nfnetlink_subsystem * ss ; const struct nfnl_callback * nc ; static LIST_HEAD ( err_list ) ; u32 status ; int err ; if ( subsys_id >= NFNL_SUBSYS_COUNT ) return netlink_ack ( skb , nlh , - EINVAL ) ; replay : status = 0 ; skb = netlink_skb_clone ( oskb , GFP_KERNEL ) ; if ( ! skb ) return netlink_ack ( oskb , nlh , - ENOMEM ) ; nfnl_lock ( subsys_id ) ; ss = nfnl_dereference_protected ( subsys_id ) ; if ( ! ss ) { # ifdef CONFIG_MODULES nfnl_unlock ( subsys_id ) ; request_module ( \"nfnetlink-subsys-%d\" , subsys_id ) ; nfnl_lock ( subsys_id ) ; ss = nfnl_dereference_protected ( subsys_id ) ; if ( ! ss ) # endif { nfnl_unlock ( subsys_id ) ; netlink_ack ( oskb , nlh , - EOPNOTSUPP ) ; return kfree_skb ( skb ) ; } } if ( ! ss -> commit || ! ss -> abort ) { nfnl_unlock ( subsys_id ) ; netlink_ack ( oskb , nlh , - EOPNOTSUPP ) ; return kfree_skb ( skb ) ; } while ( skb -> len >= nlmsg_total_size ( 0 ) ) { int msglen , type ; nlh = nlmsg_hdr ( skb ) ; err = 0 ; <S2SV_StartBug> if ( nlmsg_len ( nlh ) < sizeof ( struct nfgenmsg ) || <S2SV_EndBug> skb -> len < nlh -> nlmsg_len ) { err = - EINVAL ; goto ack ; } if ( ! ( nlh -> nlmsg_flags & NLM_F_REQUEST ) ) { err = - EINVAL ; goto ack ; } type = nlh -> nlmsg_type ; if ( type == NFNL_MSG_BATCH_BEGIN ) { nfnl_err_reset ( & err_list ) ; status |= NFNL_BATCH_FAILURE ; goto done ; } else if ( type == NFNL_MSG_BATCH_END ) { status |= NFNL_BATCH_DONE ; goto done ; } else if ( type < NLMSG_MIN_TYPE ) { err = - EINVAL ; goto ack ; } if ( NFNL_SUBSYS_ID ( type ) != subsys_id ) { err = - EINVAL ; goto ack ; } nc = nfnetlink_find_client ( type , ss ) ; if ( ! nc ) { err = - EINVAL ; goto ack ; } { int min_len = nlmsg_total_size ( sizeof ( struct nfgenmsg ) ) ; u_int8_t cb_id = NFNL_MSG_TYPE ( nlh -> nlmsg_type ) ; struct nlattr * cda [ ss -> cb [ cb_id ] . attr_count + 1 ] ; struct nlattr * attr = ( void * ) nlh + min_len ; int attrlen = nlh -> nlmsg_len - min_len ; err = nla_parse ( cda , ss -> cb [ cb_id ] . attr_count , attr , attrlen , ss -> cb [ cb_id ] . policy ) ; if ( err < 0 ) goto ack ; if ( nc -> call_batch ) { err = nc -> call_batch ( net , net -> nfnl , skb , nlh , ( const struct nlattr * * ) cda ) ; } if ( err == - EAGAIN ) { status |= NFNL_BATCH_REPLAY ; goto next ; } } ack : if ( nlh -> nlmsg_flags & NLM_F_ACK || err ) { if ( nfnl_err_add ( & err_list , nlh , err ) < 0 ) { nfnl_err_reset ( & err_list ) ; netlink_ack ( oskb , nlmsg_hdr ( oskb ) , - ENOMEM ) ; status |= NFNL_BATCH_FAILURE ; goto done ; } if ( err ) status |= NFNL_BATCH_FAILURE ; } next : msglen = NLMSG_ALIGN ( nlh -> nlmsg_len ) ; if ( msglen > skb -> len ) msglen = skb -> len ; skb_pull ( skb , msglen ) ; } done : if ( status & NFNL_BATCH_REPLAY ) { ss -> abort ( net , oskb ) ; nfnl_err_reset ( & err_list ) ; nfnl_unlock ( subsys_id ) ; kfree_skb ( skb ) ; goto replay ; } else if ( status == NFNL_BATCH_DONE ) { ss -> commit ( net , oskb ) ; } else { ss -> abort ( net , oskb ) ; } nfnl_err_deliver ( & err_list , oskb ) ; nfnl_unlock ( subsys_id ) ; kfree_skb ( skb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( nlh -> nlmsg_len < NLMSG_HDRLEN || skb -> len < nlh -> nlmsg_len || <S2SV_ModStart> struct nfgenmsg ) ) { nfnl_err_reset ( & err_list ) ; status |= NFNL_BATCH_FAILURE ; goto done <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t ssiProcessExecCommand ( HttpConnection * connection , const char_t * tag , size_t length ) { char_t * separator ; char_t * attribute ; char_t * value ; if ( connection -> settings -> cgiCallback == NULL ) return ERROR_INVALID_TAG ; if ( length < 4 || length >= HTTP_SERVER_BUFFER_SIZE ) return ERROR_INVALID_TAG ; osMemcpy ( connection -> buffer , tag + 4 , length - 4 ) ; connection -> buffer [ length - 4 ] = '\\\\0' ; <S2SV_StartBug> separator = strchr ( connection -> buffer , '=' ) ; <S2SV_EndBug> if ( ! separator ) return ERROR_INVALID_TAG ; * separator = '\\\\0' ; attribute = strTrimWhitespace ( connection -> buffer ) ; value = strTrimWhitespace ( separator + 1 ) ; if ( value [ 0 ] == '\\\\'' || value [ 0 ] == \\'\\\\\"\\' ) value ++ ; length = osStrlen ( value ) ; if ( length > 0 ) { if ( value [ length - 1 ] == '\\\\'' || value [ length - 1 ] == \\'\\\\\"\\' ) value [ length - 1 ] = '\\\\0' ; } if ( osStrcasecmp ( attribute , \"cgi\" ) && osStrcasecmp ( attribute , \"cmd\" ) && osStrcasecmp ( attribute , \"cmd_argument\" ) ) return ERROR_INVALID_TAG ; if ( osStrlen ( value ) > HTTP_SERVER_CGI_PARAM_MAX_LEN ) return ERROR_INVALID_TAG ; osStrcpy ( connection -> cgiParam , value ) ; return connection -> settings -> cgiCallback ( connection , connection -> cgiParam ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; separator = osStrchr <S2SV_ModEnd> ( connection ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7019\n\n```\nCWE-20 static int get_cox ( Jpeg2000DecoderContext * s , Jpeg2000CodingStyle * c ) { uint8_t byte ; if ( bytestream2_get_bytes_left ( & s -> g ) < 5 ) return AVERROR_INVALIDDATA ; c -> nreslevels = bytestream2_get_byteu ( & s -> g ) + 1 ; if ( c -> nreslevels >= JPEG2000_MAX_RESLEVELS ) { av_log ( s -> avctx , AV_LOG_ERROR , \"nreslevels<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\\\\n\" , c -> nreslevels ) ; return AVERROR_INVALIDDATA ; } <S2SV_StartBug> if ( c -> nreslevels < s -> reduction_factor ) <S2SV_EndBug> <S2SV_StartBug> c -> nreslevels2decode = 1 ; <S2SV_EndBug> else c -> nreslevels2decode = c -> nreslevels - s -> reduction_factor ; c -> log2_cblk_width = ( bytestream2_get_byteu ( & s -> g ) & 15 ) + 2 ; c -> log2_cblk_height = ( bytestream2_get_byteu ( & s -> g ) & 15 ) + 2 ; if ( c -> log2_cblk_width > 10 || c -> log2_cblk_height > 10 || c -> log2_cblk_width + c -> log2_cblk_height > 12 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"cblk<S2SV_blank>size<S2SV_blank>invalid\\\\n\" ) ; return AVERROR_INVALIDDATA ; } if ( c -> log2_cblk_width > 6 || c -> log2_cblk_height > 6 ) { avpriv_request_sample ( s -> avctx , \"cblk<S2SV_blank>size<S2SV_blank>><S2SV_blank>64\" ) ; return AVERROR_PATCHWELCOME ; } c -> cblk_style = bytestream2_get_byteu ( & s -> g ) ; if ( c -> cblk_style != 0 ) { av_log ( s -> avctx , AV_LOG_WARNING , \"extra<S2SV_blank>cblk<S2SV_blank>styles<S2SV_blank>%X\\\\n\" , c -> cblk_style ) ; } c -> transform = bytestream2_get_byteu ( & s -> g ) ; if ( ( s -> avctx -> flags & CODEC_FLAG_BITEXACT ) && ( c -> transform == FF_DWT97 ) ) c -> transform = FF_DWT97_INT ; if ( c -> csty & JPEG2000_CSTY_PREC ) { int i ; for ( i = 0 ; i < c -> nreslevels ; i ++ ) { byte = bytestream2_get_byte ( & s -> g ) ; c -> log2_prec_widths [ i ] = byte & 0x0F ; c -> log2_prec_heights [ i ] = ( byte >> 4 ) & 0x0F ; } } else { memset ( c -> log2_prec_widths , 15 , sizeof ( c -> log2_prec_widths ) ) ; memset ( c -> log2_prec_heights , 15 , sizeof ( c -> log2_prec_heights ) ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c -> nreslevels <= <S2SV_ModEnd> s -> reduction_factor <S2SV_ModStart> -> reduction_factor ) { av_log ( s -> avctx , AV_LOG_ERROR , \"reduction_factor<S2SV_blank>too<S2SV_blank>large<S2SV_blank>for<S2SV_blank>this<S2SV_blank>bitstream,<S2SV_blank>max<S2SV_blank>is<S2SV_blank>%d\\\\n\" , c -> nreslevels - 1 ) ; s -> reduction_factor = c -> nreslevels - 1 ; return AVERROR ( EINVAL ) ; } <S2SV_ModEnd> c -> nreslevels2decode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_segmentation ( VP9_COMP * cpi , <S2SV_EndBug> struct vp9_write_bit_buffer * wb ) { int i , j ; <S2SV_StartBug> struct segmentation * seg = & cpi -> common . seg ; <S2SV_EndBug> vp9_wb_write_bit ( wb , seg -> enabled ) ; if ( ! seg -> enabled ) return ; <S2SV_StartBug> vp9_wb_write_bit ( wb , seg -> update_map ) ; <S2SV_EndBug> if ( seg -> update_map ) { <S2SV_StartBug> vp9_choose_segmap_coding_method ( cpi ) ; <S2SV_EndBug> for ( i = 0 ; i < SEG_TREE_PROBS ; i ++ ) { const int prob = seg -> tree_probs [ i ] ; const int update = prob != MAX_PROB ; <S2SV_StartBug> vp9_wb_write_bit ( wb , update ) ; <S2SV_EndBug> if ( update ) vp9_wb_write_literal ( wb , prob , 8 ) ; } <S2SV_StartBug> vp9_wb_write_bit ( wb , seg -> temporal_update ) ; <S2SV_EndBug> if ( seg -> temporal_update ) { for ( i = 0 ; i < PREDICTION_PROBS ; i ++ ) { const int prob = seg -> pred_probs [ i ] ; const int update = prob != MAX_PROB ; <S2SV_StartBug> vp9_wb_write_bit ( wb , update ) ; <S2SV_EndBug> if ( update ) vp9_wb_write_literal ( wb , prob , 8 ) ; } } } <S2SV_StartBug> vp9_wb_write_bit ( wb , seg -> update_data ) ; <S2SV_EndBug> if ( seg -> update_data ) { <S2SV_StartBug> vp9_wb_write_bit ( wb , seg -> abs_delta ) ; <S2SV_EndBug> for ( i = 0 ; i < MAX_SEGMENTS ; i ++ ) { for ( j = 0 ; j < SEG_LVL_MAX ; j ++ ) { <S2SV_StartBug> const int active = vp9_segfeature_active ( seg , i , j ) ; <S2SV_EndBug> vp9_wb_write_bit ( wb , active ) ; if ( active ) { <S2SV_StartBug> const int data = vp9_get_segdata ( seg , i , j ) ; <S2SV_EndBug> const int data_max = vp9_seg_feature_data_max ( j ) ; if ( vp9_is_segfeature_signed ( j ) ) { encode_unsigned_max ( wb , abs ( data ) , data_max ) ; <S2SV_StartBug> vp9_wb_write_bit ( wb , data < 0 ) ; <S2SV_EndBug> } else { encode_unsigned_max ( wb , data , data_max ) ; } } } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void encode_segmentation ( VP9_COMMON * cm , MACROBLOCKD * xd , struct vpx_write_bit_buffer <S2SV_ModEnd> * wb ) <S2SV_ModStart> , j ; const <S2SV_ModStart> seg = & cm -> seg ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> ) return ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> { vp9_choose_segmap_coding_method ( cm , xd <S2SV_ModEnd> ) ; for <S2SV_ModStart> != MAX_PROB ; vpx_wb_write_bit ( wb , update ) ; if ( update ) vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> ) ; } vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> != MAX_PROB ; vpx_wb_write_bit ( wb , update ) ; if ( update ) vpx_wb_write_literal <S2SV_ModEnd> ( wb , <S2SV_ModStart> } } } vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> update_data ) { vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> int active = segfeature_active ( seg , i , j ) ; vpx_wb_write_bit <S2SV_ModEnd> ( wb , <S2SV_ModStart> int data = get_segdata <S2SV_ModEnd> ( seg , <S2SV_ModStart> data_max ) ; vpx_wb_write_bit <S2SV_ModEnd> ( wb ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0879\n\n```\nCWE-400 <S2SV_StartBug> void exit_io_context ( void ) <S2SV_EndBug> { struct io_context * ioc ; <S2SV_StartBug> task_lock ( current ) ; <S2SV_EndBug> <S2SV_StartBug> ioc = current -> io_context ; <S2SV_EndBug> <S2SV_StartBug> current -> io_context = NULL ; <S2SV_EndBug> <S2SV_StartBug> task_unlock ( current ) ; <S2SV_EndBug> if ( atomic_dec_and_test ( & ioc -> nr_tasks ) ) { if ( ioc -> aic && ioc -> aic -> exit ) ioc -> aic -> exit ( ioc -> aic ) ; cfq_exit ( ioc ) ; } put_io_context ( ioc ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void exit_io_context ( struct task_struct * task <S2SV_ModEnd> ) { struct <S2SV_ModStart> ; task_lock ( task <S2SV_ModEnd> ) ; ioc <S2SV_ModStart> ; ioc = task <S2SV_ModEnd> -> io_context ; <S2SV_ModStart> -> io_context ; task <S2SV_ModEnd> -> io_context = <S2SV_ModStart> ; task_unlock ( task <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 static int mark_source_chains ( const struct xt_table_info * newinfo , unsigned int valid_hooks , void * entry0 ) { unsigned int hook ; for ( hook = 0 ; hook < NF_ARP_NUMHOOKS ; hook ++ ) { unsigned int pos = newinfo -> hook_entry [ hook ] ; struct arpt_entry * e = ( struct arpt_entry * ) ( entry0 + pos ) ; if ( ! ( valid_hooks & ( 1 << hook ) ) ) continue ; e -> counters . pcnt = pos ; for ( ; ; ) { const struct xt_standard_target * t = ( void * ) arpt_get_target_c ( e ) ; int visited = e -> comefrom & ( 1 << hook ) ; if ( e -> comefrom & ( 1 << NF_ARP_NUMHOOKS ) ) { pr_notice ( \"arptables:<S2SV_blank>loop<S2SV_blank>hook<S2SV_blank>%u<S2SV_blank>pos<S2SV_blank>%u<S2SV_blank>%08X.\\\\n\" , hook , pos , e -> comefrom ) ; return 0 ; } e -> comefrom |= ( ( 1 << hook ) | ( 1 << NF_ARP_NUMHOOKS ) ) ; <S2SV_StartBug> if ( ( e -> target_offset == sizeof ( struct arpt_entry ) && <S2SV_EndBug> ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 ) && <S2SV_StartBug> t -> verdict < 0 && unconditional ( & e -> arp ) ) || <S2SV_EndBug> visited ) { unsigned int oldpos , size ; if ( ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 ) && t -> verdict < - NF_MAX_VERDICT - 1 ) { duprintf ( \"mark_source_chains:<S2SV_blank>bad<S2SV_blank>\" \"negative<S2SV_blank>verdict<S2SV_blank>(%i)\\\\n\" , t -> verdict ) ; return 0 ; } do { e -> comefrom ^= ( 1 << NF_ARP_NUMHOOKS ) ; oldpos = pos ; pos = e -> counters . pcnt ; e -> counters . pcnt = 0 ; if ( pos == oldpos ) goto next ; e = ( struct arpt_entry * ) ( entry0 + pos ) ; } while ( oldpos == pos + e -> next_offset ) ; size = e -> next_offset ; e = ( struct arpt_entry * ) ( entry0 + pos + size ) ; e -> counters . pcnt = pos ; pos += size ; } else { int newpos = t -> verdict ; if ( strcmp ( t -> target . u . user . name , XT_STANDARD_TARGET ) == 0 && newpos >= 0 ) { if ( newpos > newinfo -> size - sizeof ( struct arpt_entry ) ) { duprintf ( \"mark_source_chains:<S2SV_blank>\" \"bad<S2SV_blank>verdict<S2SV_blank>(%i)\\\\n\" , newpos ) ; return 0 ; } duprintf ( \"Jump<S2SV_blank>rule<S2SV_blank>%u<S2SV_blank>-><S2SV_blank>%u\\\\n\" , pos , newpos ) ; } else { newpos = pos + e -> next_offset ; } e = ( struct arpt_entry * ) ( entry0 + newpos ) ; e -> counters . pcnt = pos ; pos = newpos ; } } next : duprintf ( \"Finished<S2SV_blank>chain<S2SV_blank>%u\\\\n\" , hook ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ( unconditional ( e <S2SV_ModEnd> ) && ( <S2SV_ModStart> verdict < 0 <S2SV_ModEnd> ) || visited\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9059\n\n```\nCWE-77 int do_command ( unsigned char c ) { static int dtr_up = 0 ; int newbaud , newflow , newparity , newbits ; const char * xfr_cmd ; char * fname ; int r ; switch ( c ) { case KEY_EXIT : return 1 ; case KEY_QUIT : term_set_hupcl ( tty_fd , 0 ) ; term_flush ( tty_fd ) ; term_apply ( tty_fd ) ; term_erase ( tty_fd ) ; return 1 ; case KEY_STATUS : show_status ( dtr_up ) ; break ; case KEY_PULSE : fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>pulse<S2SV_blank>DTR<S2SV_blank>***\\\\r\\\\n\" ) ; if ( term_pulse_dtr ( tty_fd ) < 0 ) fd_printf ( STO , \"***<S2SV_blank>FAILED\\\\r\\\\n\" ) ; break ; case KEY_TOGGLE : if ( dtr_up ) r = term_lower_dtr ( tty_fd ) ; else r = term_raise_dtr ( tty_fd ) ; if ( r >= 0 ) dtr_up = ! dtr_up ; fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>DTR:<S2SV_blank>%s<S2SV_blank>***\\\\r\\\\n\" , dtr_up ? \"up\" : \"down\" ) ; break ; case KEY_BAUD_UP : case KEY_BAUD_DN : if ( c == KEY_BAUD_UP ) opts . baud = baud_up ( opts . baud ) ; else opts . baud = baud_down ( opts . baud ) ; term_set_baudrate ( tty_fd , opts . baud ) ; tty_q . len = 0 ; term_flush ( tty_fd ) ; term_apply ( tty_fd ) ; newbaud = term_get_baudrate ( tty_fd , NULL ) ; if ( opts . baud != newbaud ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>baud:<S2SV_blank>%d<S2SV_blank>(%d)<S2SV_blank>***\\\\r\\\\n\" , opts . baud , newbaud ) ; } else { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>baud:<S2SV_blank>%d<S2SV_blank>***\\\\r\\\\n\" , opts . baud ) ; } set_tty_write_sz ( newbaud ) ; break ; case KEY_FLOW : opts . flow = flow_next ( opts . flow ) ; term_set_flowcntrl ( tty_fd , opts . flow ) ; tty_q . len = 0 ; term_flush ( tty_fd ) ; term_apply ( tty_fd ) ; newflow = term_get_flowcntrl ( tty_fd ) ; if ( opts . flow != newflow ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>flow:<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>***\\\\r\\\\n\" , flow_str [ opts . flow ] , flow_str [ newflow ] ) ; } else { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>flow:<S2SV_blank>%s<S2SV_blank>***\\\\r\\\\n\" , flow_str [ opts . flow ] ) ; } break ; case KEY_PARITY : opts . parity = parity_next ( opts . parity ) ; term_set_parity ( tty_fd , opts . parity ) ; tty_q . len = 0 ; term_flush ( tty_fd ) ; term_apply ( tty_fd ) ; newparity = term_get_parity ( tty_fd ) ; if ( opts . parity != newparity ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>parity:<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>***\\\\r\\\\n\" , parity_str [ opts . parity ] , parity_str [ newparity ] ) ; } else { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>parity:<S2SV_blank>%s<S2SV_blank>***\\\\r\\\\n\" , parity_str [ opts . parity ] ) ; } break ; case KEY_BITS : opts . databits = bits_next ( opts . databits ) ; term_set_databits ( tty_fd , opts . databits ) ; tty_q . len = 0 ; term_flush ( tty_fd ) ; term_apply ( tty_fd ) ; newbits = term_get_databits ( tty_fd ) ; if ( opts . databits != newbits ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>databits:<S2SV_blank>%d<S2SV_blank>(%d)<S2SV_blank>***\\\\r\\\\n\" , opts . databits , newbits ) ; } else { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>databits:<S2SV_blank>%d<S2SV_blank>***\\\\r\\\\n\" , opts . databits ) ; } break ; case KEY_LECHO : opts . lecho = ! opts . lecho ; fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>local<S2SV_blank>echo:<S2SV_blank>%s<S2SV_blank>***\\\\r\\\\n\" , opts . lecho ? \"yes\" : \"no\" ) ; break ; case KEY_SEND : case KEY_RECEIVE : xfr_cmd = ( c == KEY_SEND ) ? opts . send_cmd : opts . receive_cmd ; if ( xfr_cmd [ 0 ] == '\\\\0' ) { fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>command<S2SV_blank>disabled<S2SV_blank>***\\\\r\\\\n\" ) ; break ; } fname = read_filename ( ) ; if ( fname == NULL ) { fd_printf ( STO , \"***<S2SV_blank>cannot<S2SV_blank>read<S2SV_blank>filename<S2SV_blank>***\\\\r\\\\n\" ) ; break ; } <S2SV_StartBug> run_cmd ( tty_fd , xfr_cmd , fname , NULL ) ; <S2SV_EndBug> free ( fname ) ; break ; case KEY_BREAK : term_break ( tty_fd ) ; fd_printf ( STO , \"\\\\r\\\\n***<S2SV_blank>break<S2SV_blank>sent<S2SV_blank>***\\\\r\\\\n\" ) ; break ; default : break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> xfr_cmd , fname <S2SV_ModEnd> ) ; free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void rd_check_segment ( VP8_COMP * cpi , MACROBLOCK * x , BEST_SEG_INFO * bsi , unsigned int segmentation ) { int i ; int const * labels ; int br = 0 ; int bd = 0 ; B_PREDICTION_MODE this_mode ; int label_count ; int this_segment_rd = 0 ; int label_mv_thresh ; int rate = 0 ; int sbr = 0 ; int sbd = 0 ; int segmentyrate = 0 ; vp8_variance_fn_ptr_t * v_fn_ptr ; ENTROPY_CONTEXT_PLANES t_above , t_left ; ENTROPY_CONTEXT * ta ; ENTROPY_CONTEXT * tl ; ENTROPY_CONTEXT_PLANES t_above_b , t_left_b ; ENTROPY_CONTEXT * ta_b ; ENTROPY_CONTEXT * tl_b ; <S2SV_StartBug> vpx_memcpy ( & t_above , x -> e_mbd . above_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & t_left , x -> e_mbd . left_context , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> ta = ( ENTROPY_CONTEXT * ) & t_above ; tl = ( ENTROPY_CONTEXT * ) & t_left ; ta_b = ( ENTROPY_CONTEXT * ) & t_above_b ; tl_b = ( ENTROPY_CONTEXT * ) & t_left_b ; br = 0 ; bd = 0 ; v_fn_ptr = & cpi -> fn_ptr [ segmentation ] ; labels = vp8_mbsplits [ segmentation ] ; label_count = vp8_mbsplit_count [ segmentation ] ; label_mv_thresh = 1 * bsi -> mvthresh / label_count ; rate = vp8_cost_token ( vp8_mbsplit_tree , vp8_mbsplit_probs , vp8_mbsplit_encodings + segmentation ) ; rate += vp8_cost_mv_ref ( SPLITMV , bsi -> mdcounts ) ; this_segment_rd += RDCOST ( x -> rdmult , x -> rddiv , rate , 0 ) ; br += rate ; for ( i = 0 ; i < label_count ; i ++ ) { int_mv mode_mv [ B_MODE_COUNT ] ; int best_label_rd = INT_MAX ; B_PREDICTION_MODE mode_selected = ZERO4X4 ; int bestlabelyrate = 0 ; for ( this_mode = LEFT4X4 ; this_mode <= NEW4X4 ; this_mode ++ ) { int this_rd ; int distortion ; int labelyrate ; ENTROPY_CONTEXT_PLANES t_above_s , t_left_s ; ENTROPY_CONTEXT * ta_s ; ENTROPY_CONTEXT * tl_s ; <S2SV_StartBug> vpx_memcpy ( & t_above_s , & t_above , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & t_left_s , & t_left , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> ta_s = ( ENTROPY_CONTEXT * ) & t_above_s ; tl_s = ( ENTROPY_CONTEXT * ) & t_left_s ; if ( this_mode == NEW4X4 ) { int sseshift ; int num00 ; int step_param = 0 ; int further_steps ; int n ; int thissme ; int bestsme = INT_MAX ; int_mv temp_mv ; BLOCK * c ; BLOCKD * e ; if ( best_label_rd < label_mv_thresh ) break ; if ( cpi -> compressor_speed ) { if ( segmentation == BLOCK_8X16 || segmentation == BLOCK_16X8 ) { bsi -> mvp . as_int = bsi -> sv_mvp [ i ] . as_int ; if ( i == 1 && segmentation == BLOCK_16X8 ) bsi -> mvp . as_int = bsi -> sv_mvp [ 2 ] . as_int ; step_param = bsi -> sv_istep [ i ] ; } if ( segmentation == BLOCK_4X4 && i > 0 ) { bsi -> mvp . as_int = x -> e_mbd . block [ i - 1 ] . bmi . mv . as_int ; if ( i == 4 || i == 8 || i == 12 ) bsi -> mvp . as_int = x -> e_mbd . block [ i - 4 ] . bmi . mv . as_int ; step_param = 2 ; } } further_steps = ( MAX_MVSEARCH_STEPS - 1 ) - step_param ; { int sadpb = x -> sadperbit4 ; int_mv mvp_full ; mvp_full . as_mv . row = bsi -> mvp . as_mv . row >> 3 ; mvp_full . as_mv . col = bsi -> mvp . as_mv . col >> 3 ; n = vp8_mbsplit_offset [ segmentation ] [ i ] ; c = & x -> block [ n ] ; e = & x -> e_mbd . block [ n ] ; { bestsme = cpi -> diamond_search_sad ( x , c , e , & mvp_full , & mode_mv [ NEW4X4 ] , step_param , sadpb , & num00 , v_fn_ptr , x -> mvcost , bsi -> ref_mv ) ; n = num00 ; num00 = 0 ; while ( n < further_steps ) { n ++ ; if ( num00 ) num00 -- ; else { thissme = cpi -> diamond_search_sad ( x , c , e , & mvp_full , & temp_mv , step_param + n , sadpb , & num00 , v_fn_ptr , x -> mvcost , bsi -> ref_mv ) ; if ( thissme < bestsme ) { bestsme = thissme ; mode_mv [ NEW4X4 ] . as_int = temp_mv . as_int ; } } } } sseshift = segmentation_to_sseshift [ segmentation ] ; if ( ( cpi -> compressor_speed == 0 ) && ( bestsme >> sseshift ) > 4000 ) { vp8_clamp_mv ( & mvp_full , x -> mv_col_min , x -> mv_col_max , x -> mv_row_min , x -> mv_row_max ) ; thissme = cpi -> full_search_sad ( x , c , e , & mvp_full , sadpb , 16 , v_fn_ptr , x -> mvcost , bsi -> ref_mv ) ; if ( thissme < bestsme ) { bestsme = thissme ; mode_mv [ NEW4X4 ] . as_int = e -> bmi . mv . as_int ; } else { e -> bmi . mv . as_int = mode_mv [ NEW4X4 ] . as_int ; } } } if ( bestsme < INT_MAX ) { int disto ; unsigned int sse ; cpi -> find_fractional_mv_step ( x , c , e , & mode_mv [ NEW4X4 ] , bsi -> ref_mv , x -> errorperbit , v_fn_ptr , x -> mvcost , & disto , & sse ) ; } } rate = labels2mode ( x , labels , i , this_mode , & mode_mv [ this_mode ] , bsi -> ref_mv , x -> mvcost ) ; if ( ( ( mode_mv [ this_mode ] . as_mv . row >> 3 ) < x -> mv_row_min ) || ( ( mode_mv [ this_mode ] . as_mv . row >> 3 ) > x -> mv_row_max ) || ( ( mode_mv [ this_mode ] . as_mv . col >> 3 ) < x -> mv_col_min ) || ( ( mode_mv [ this_mode ] . as_mv . col >> 3 ) > x -> mv_col_max ) ) { continue ; } distortion = vp8_encode_inter_mb_segment ( x , labels , i ) / 4 ; labelyrate = rdcost_mbsegment_y ( x , labels , i , ta_s , tl_s ) ; rate += labelyrate ; this_rd = RDCOST ( x -> rdmult , x -> rddiv , rate , distortion ) ; if ( this_rd < best_label_rd ) { sbr = rate ; sbd = distortion ; bestlabelyrate = labelyrate ; mode_selected = this_mode ; best_label_rd = this_rd ; <S2SV_StartBug> vpx_memcpy ( ta_b , ta_s , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( tl_b , tl_s , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> } } <S2SV_StartBug> vpx_memcpy ( ta , ta_b , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( tl , tl_b , sizeof ( ENTROPY_CONTEXT_PLANES ) ) ; <S2SV_EndBug> labels2mode ( x , labels , i , mode_selected , & mode_mv [ mode_selected ] , bsi -> ref_mv , x -> mvcost ) ; br += sbr ; bd += sbd ; segmentyrate += bestlabelyrate ; this_segment_rd += best_label_rd ; if ( this_segment_rd >= bsi -> segment_rd ) break ; } if ( this_segment_rd < bsi -> segment_rd ) { bsi -> r = br ; bsi -> d = bd ; bsi -> segment_yrate = segmentyrate ; bsi -> segment_rd = this_segment_rd ; bsi -> segment_num = segmentation ; for ( i = 0 ; i < 16 ; i ++ ) { bsi -> mvs [ i ] . as_mv = x -> partition_info -> bmi [ i ] . mv . as_mv ; bsi -> modes [ i ] = x -> partition_info -> bmi [ i ] . mode ; bsi -> eobs [ i ] = x -> e_mbd . eobs [ i ] ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * tl_b ; memcpy <S2SV_ModEnd> ( & t_above <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & t_left <S2SV_ModStart> * tl_s ; memcpy <S2SV_ModEnd> ( & t_above_s <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & t_left_s <S2SV_ModStart> = this_rd ; memcpy <S2SV_ModEnd> ( ta_b , <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( tl_b , <S2SV_ModStart> ; } } memcpy <S2SV_ModEnd> ( ta , <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( tl ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2094\n\n```\nCWE-189 static int perf_swevent_init ( struct perf_event * event ) { <S2SV_StartBug> int event_id = event -> attr . config ; <S2SV_EndBug> if ( event -> attr . type != PERF_TYPE_SOFTWARE ) return - ENOENT ; if ( has_branch_stack ( event ) ) return - EOPNOTSUPP ; switch ( event_id ) { case PERF_COUNT_SW_CPU_CLOCK : case PERF_COUNT_SW_TASK_CLOCK : return - ENOENT ; default : break ; } if ( event_id >= PERF_COUNT_SW_MAX ) return - ENOENT ; if ( ! event -> parent ) { int err ; err = swevent_hlist_get ( event ) ; if ( err ) return err ; static_key_slow_inc ( & perf_swevent_enabled [ event_id ] ) ; event -> destroy = sw_perf_event_destroy ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> event ) { u64 <S2SV_ModEnd> event_id = event\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-0239\n\n```\nCWE-269 static int em_sysenter ( struct x86_emulate_ctxt * ctxt ) { const struct x86_emulate_ops * ops = ctxt -> ops ; struct desc_struct cs , ss ; u64 msr_data ; u16 cs_sel , ss_sel ; u64 efer = 0 ; ops -> get_msr ( ctxt , MSR_EFER , & efer ) ; if ( ctxt -> mode == X86EMUL_MODE_REAL ) return emulate_gp ( ctxt , 0 ) ; <S2SV_StartBug> if ( ( ctxt -> mode == X86EMUL_MODE_PROT32 ) && ( efer & EFER_LMA ) <S2SV_EndBug> && ! vendor_intel ( ctxt ) ) return emulate_ud ( ctxt ) ; if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) return X86EMUL_UNHANDLEABLE ; setup_syscalls_segments ( ctxt , & cs , & ss ) ; ops -> get_msr ( ctxt , MSR_IA32_SYSENTER_CS , & msr_data ) ; <S2SV_StartBug> switch ( ctxt -> mode ) { <S2SV_EndBug> case X86EMUL_MODE_PROT32 : if ( ( msr_data & 0xfffc ) == 0x0 ) return emulate_gp ( ctxt , 0 ) ; <S2SV_StartBug> break ; <S2SV_EndBug> case X86EMUL_MODE_PROT64 : if ( msr_data == 0x0 ) return emulate_gp ( ctxt , 0 ) ; break ; default : break ; } ctxt -> eflags &= ~ ( EFLG_VM | EFLG_IF ) ; <S2SV_StartBug> cs_sel = ( u16 ) msr_data ; <S2SV_EndBug> cs_sel &= ~ SELECTOR_RPL_MASK ; ss_sel = cs_sel + 8 ; <S2SV_StartBug> ss_sel &= ~ SELECTOR_RPL_MASK ; <S2SV_EndBug> <S2SV_StartBug> if ( ctxt -> mode == X86EMUL_MODE_PROT64 || ( efer & EFER_LMA ) ) { <S2SV_EndBug> cs . d = 0 ; cs . l = 1 ; } ops -> set_segment ( ctxt , cs_sel , & cs , 0 , VCPU_SREG_CS ) ; ops -> set_segment ( ctxt , ss_sel , & ss , 0 , VCPU_SREG_SS ) ; ops -> get_msr ( ctxt , MSR_IA32_SYSENTER_EIP , & msr_data ) ; <S2SV_StartBug> ctxt -> _eip = msr_data ; <S2SV_EndBug> ops -> get_msr ( ctxt , MSR_IA32_SYSENTER_ESP , & msr_data ) ; <S2SV_StartBug> * reg_write ( ctxt , VCPU_REGS_RSP ) = msr_data ; <S2SV_EndBug> return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt -> mode != X86EMUL_MODE_PROT64 <S2SV_ModEnd> ) && ( <S2SV_ModStart> msr_data ) ; <S2SV_ModEnd> if ( ( <S2SV_ModStart> 0 ) ; <S2SV_ModEnd> ctxt -> eflags <S2SV_ModStart> u16 ) msr_data & <S2SV_ModEnd> ~ SELECTOR_RPL_MASK ; <S2SV_ModStart> + 8 ; if <S2SV_ModEnd> ( efer & <S2SV_ModStart> efer & EFER_LMA <S2SV_ModEnd> ) { cs <S2SV_ModStart> -> _eip = ( efer & EFER_LMA ) ? msr_data : ( u32 ) <S2SV_ModStart> VCPU_REGS_RSP ) = ( efer & EFER_LMA ) ? msr_data : ( u32 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-6401\n\n```\nCWE-310 json_t * json_object ( void ) { json_object_t * object = jsonp_malloc ( sizeof ( json_object_t ) ) ; if ( ! object ) <S2SV_StartBug> return NULL ; <S2SV_EndBug> json_init ( & object -> json , JSON_OBJECT ) ; if ( hashtable_init ( & object -> hashtable ) ) { jsonp_free ( object ) ; return NULL ; } object -> serial = 0 ; object -> visited = 0 ; return & object -> json ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return NULL ; if ( ! hashtable_seed ) { json_object_seed ( 0 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5336\n\n```\nCWE-20 int mk_request_error ( int http_status , struct client_session * cs , struct session_request * sr ) { int ret , fd ; mk_ptr_t message , * page = 0 ; struct error_page * entry ; struct mk_list * head ; struct file_info finfo ; mk_header_set_http_status ( sr , http_status ) ; if ( http_status != MK_CLIENT_LENGTH_REQUIRED && http_status != MK_CLIENT_BAD_REQUEST && http_status != MK_CLIENT_REQUEST_ENTITY_TOO_LARGE ) { mk_list_foreach ( head , & sr -> host_conf -> error_pages ) { entry = mk_list_entry ( head , struct error_page , _head ) ; if ( entry -> status != http_status ) { continue ; } ret = mk_file_get_info ( entry -> real_path , & finfo ) ; if ( ret == - 1 ) { break ; } fd = open ( entry -> real_path , config -> open_flags ) ; if ( fd == - 1 ) { break ; } sr -> fd_file = fd ; <S2SV_StartBug> sr -> bytes_to_send = finfo . size ; <S2SV_EndBug> sr -> headers . content_length = finfo . size ; sr -> headers . real_length = finfo . size ; memcpy ( & sr -> file_info , & finfo , sizeof ( struct file_info ) ) ; mk_header_send ( cs -> socket , cs , sr ) ; return mk_http_send_file ( cs , sr ) ; } } mk_ptr_reset ( & message ) ; switch ( http_status ) { case MK_CLIENT_BAD_REQUEST : page = mk_request_set_default_page ( \"Bad<S2SV_blank>Request\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_CLIENT_FORBIDDEN : page = mk_request_set_default_page ( \"Forbidden\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_CLIENT_NOT_FOUND : mk_string_build ( & message . data , & message . len , \"The<S2SV_blank>requested<S2SV_blank>URL<S2SV_blank>was<S2SV_blank>not<S2SV_blank>found<S2SV_blank>on<S2SV_blank>this<S2SV_blank>server.\" ) ; page = mk_request_set_default_page ( \"Not<S2SV_blank>Found\" , message , sr -> host_conf -> host_signature ) ; mk_ptr_free ( & message ) ; break ; case MK_CLIENT_REQUEST_ENTITY_TOO_LARGE : mk_string_build ( & message . data , & message . len , \"The<S2SV_blank>request<S2SV_blank>entity<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.\" ) ; page = mk_request_set_default_page ( \"Entity<S2SV_blank>too<S2SV_blank>large\" , message , sr -> host_conf -> host_signature ) ; mk_ptr_free ( & message ) ; break ; case MK_CLIENT_METHOD_NOT_ALLOWED : page = mk_request_set_default_page ( \"Method<S2SV_blank>Not<S2SV_blank>Allowed\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_CLIENT_REQUEST_TIMEOUT : case MK_CLIENT_LENGTH_REQUIRED : break ; case MK_SERVER_NOT_IMPLEMENTED : page = mk_request_set_default_page ( \"Method<S2SV_blank>Not<S2SV_blank>Implemented\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_SERVER_INTERNAL_ERROR : page = mk_request_set_default_page ( \"Internal<S2SV_blank>Server<S2SV_blank>Error\" , sr -> uri , sr -> host_conf -> host_signature ) ; break ; case MK_SERVER_HTTP_VERSION_UNSUP : mk_ptr_reset ( & message ) ; page = mk_request_set_default_page ( \"HTTP<S2SV_blank>Version<S2SV_blank>Not<S2SV_blank>Supported\" , message , sr -> host_conf -> host_signature ) ; break ; } if ( page ) { sr -> headers . content_length = page -> len ; } sr -> headers . location = NULL ; sr -> headers . cgi = SH_NOCGI ; sr -> headers . pconnections_left = 0 ; sr -> headers . last_modified = - 1 ; if ( ! page ) { mk_ptr_reset ( & sr -> headers . content_type ) ; } else { mk_ptr_set ( & sr -> headers . content_type , \"text/html\\\\r\\\\n\" ) ; } mk_header_send ( cs -> socket , cs , sr ) ; if ( page ) { if ( sr -> method != MK_HTTP_METHOD_HEAD ) mk_socket_send ( cs -> socket , page -> data , page -> len ) ; mk_ptr_free ( page ) ; mk_mem_free ( page ) ; } mk_server_cork_flag ( cs -> socket , TCP_CORK_OFF ) ; return EXIT_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; sr -> fd_is_fdt = MK_FALSE ; sr ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 static void record_recent_object ( struct object * obj , <S2SV_StartBug> struct strbuf * path , <S2SV_EndBug> <S2SV_StartBug> const char * last , <S2SV_EndBug> void * data ) { sha1_array_append ( & recent_objects , obj -> oid . hash ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj , <S2SV_ModEnd> const char * <S2SV_ModStart> const char * name <S2SV_ModEnd> , void *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6544\n\n```\nCWE-200 static int hci_sock_getname ( struct socket * sock , struct sockaddr * addr , int * addr_len , int peer ) { struct sockaddr_hci * haddr = ( struct sockaddr_hci * ) addr ; struct sock * sk = sock -> sk ; struct hci_dev * hdev = hci_pi ( sk ) -> hdev ; BT_DBG ( \"sock<S2SV_blank>%p<S2SV_blank>sk<S2SV_blank>%p\" , sock , sk ) ; if ( ! hdev ) return - EBADFD ; lock_sock ( sk ) ; * addr_len = sizeof ( * haddr ) ; haddr -> hci_family = AF_BLUETOOTH ; haddr -> hci_dev = hdev -> id ; <S2SV_StartBug> release_sock ( sk ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> id ; haddr -> hci_channel = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9731\n\n```\nCWE-17 static int udf_readdir ( struct file * file , struct dir_context * ctx ) { struct inode * dir = file_inode ( file ) ; struct udf_inode_info * iinfo = UDF_I ( dir ) ; struct udf_fileident_bh fibh = { . sbh = NULL , . ebh = NULL } ; struct fileIdentDesc * fi = NULL ; struct fileIdentDesc cfi ; int block , iblock ; loff_t nf_pos ; int flen ; unsigned char * fname = NULL ; unsigned char * nameptr ; uint16_t liu ; uint8_t lfi ; loff_t size = udf_ext0_offset ( dir ) + dir -> i_size ; struct buffer_head * tmp , * bha [ 16 ] ; struct kernel_lb_addr eloc ; uint32_t elen ; sector_t offset ; int i , num , ret = 0 ; struct extent_position epos = { NULL , 0 , { 0 , 0 } } ; if ( ctx -> pos == 0 ) { if ( ! dir_emit_dot ( file , ctx ) ) return 0 ; ctx -> pos = 1 ; } nf_pos = ( ctx -> pos - 1 ) << 2 ; if ( nf_pos >= size ) goto out ; fname = kmalloc ( UDF_NAME_LEN , GFP_NOFS ) ; if ( ! fname ) { ret = - ENOMEM ; goto out ; } if ( nf_pos == 0 ) nf_pos = udf_ext0_offset ( dir ) ; fibh . soffset = fibh . eoffset = nf_pos & ( dir -> i_sb -> s_blocksize - 1 ) ; if ( iinfo -> i_alloc_type != ICBTAG_FLAG_AD_IN_ICB ) { if ( inode_bmap ( dir , nf_pos >> dir -> i_sb -> s_blocksize_bits , & epos , & eloc , & elen , & offset ) != ( EXT_RECORDED_ALLOCATED >> 30 ) ) { ret = - ENOENT ; goto out ; } block = udf_get_lb_pblock ( dir -> i_sb , & eloc , offset ) ; if ( ( ++ offset << dir -> i_sb -> s_blocksize_bits ) < elen ) { if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_SHORT ) epos . offset -= sizeof ( struct short_ad ) ; else if ( iinfo -> i_alloc_type == ICBTAG_FLAG_AD_LONG ) epos . offset -= sizeof ( struct long_ad ) ; } else { offset = 0 ; } if ( ! ( fibh . sbh = fibh . ebh = udf_tread ( dir -> i_sb , block ) ) ) { ret = - EIO ; goto out ; } if ( ! ( offset & ( ( 16 >> ( dir -> i_sb -> s_blocksize_bits - 9 ) ) - 1 ) ) ) { i = 16 >> ( dir -> i_sb -> s_blocksize_bits - 9 ) ; if ( i + offset > ( elen >> dir -> i_sb -> s_blocksize_bits ) ) i = ( elen >> dir -> i_sb -> s_blocksize_bits ) - offset ; for ( num = 0 ; i > 0 ; i -- ) { block = udf_get_lb_pblock ( dir -> i_sb , & eloc , offset + i ) ; tmp = udf_tgetblk ( dir -> i_sb , block ) ; if ( tmp && ! buffer_uptodate ( tmp ) && ! buffer_locked ( tmp ) ) bha [ num ++ ] = tmp ; else brelse ( tmp ) ; } if ( num ) { ll_rw_block ( READA , num , bha ) ; for ( i = 0 ; i < num ; i ++ ) brelse ( bha [ i ] ) ; } } } while ( nf_pos < size ) { struct kernel_lb_addr tloc ; ctx -> pos = ( nf_pos >> 2 ) + 1 ; fi = udf_fileident_read ( dir , & nf_pos , & fibh , & cfi , & epos , & eloc , & elen , & offset ) ; if ( ! fi ) goto out ; liu = le16_to_cpu ( cfi . lengthOfImpUse ) ; lfi = cfi . lengthFileIdent ; if ( fibh . sbh == fibh . ebh ) { nameptr = fi -> fileIdent + liu ; } else { int poffset ; poffset = fibh . soffset + sizeof ( struct fileIdentDesc ) + liu + lfi ; if ( poffset >= lfi ) { nameptr = ( char * ) ( fibh . ebh -> b_data + poffset - lfi ) ; } else { nameptr = fname ; memcpy ( nameptr , fi -> fileIdent + liu , lfi - poffset ) ; memcpy ( nameptr + lfi - poffset , fibh . ebh -> b_data , poffset ) ; } } if ( ( cfi . fileCharacteristics & FID_FILE_CHAR_DELETED ) != 0 ) { if ( ! UDF_QUERY_FLAG ( dir -> i_sb , UDF_FLAG_UNDELETE ) ) continue ; } if ( ( cfi . fileCharacteristics & FID_FILE_CHAR_HIDDEN ) != 0 ) { if ( ! UDF_QUERY_FLAG ( dir -> i_sb , UDF_FLAG_UNHIDE ) ) continue ; } if ( cfi . fileCharacteristics & FID_FILE_CHAR_PARENT ) { if ( ! dir_emit_dotdot ( file , ctx ) ) goto out ; continue ; } <S2SV_StartBug> flen = udf_get_filename ( dir -> i_sb , nameptr , fname , lfi ) ; <S2SV_EndBug> if ( ! flen ) continue ; tloc = lelb_to_cpu ( cfi . icb . extLocation ) ; iblock = udf_get_lb_pblock ( dir -> i_sb , & tloc , 0 ) ; if ( ! dir_emit ( ctx , fname , flen , iblock , DT_UNKNOWN ) ) goto out ; } ctx -> pos = ( nf_pos >> 2 ) + 1 ; out : if ( fibh . sbh != fibh . ebh ) brelse ( fibh . ebh ) ; brelse ( fibh . sbh ) ; brelse ( epos . bh ) ; kfree ( fname ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , nameptr , lfi , fname , UDF_NAME_LEN <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_dequant_idct_add_uv_block_mmx ( short * q , short * dq , unsigned char * dstu , unsigned char * dstv , int stride , char * eobs ) { int i ; for ( i = 0 ; i < 2 ; i ++ ) { if ( eobs [ 0 ] > 1 ) vp8_dequant_idct_add_mmx ( q , dq , dstu , stride ) ; else if ( eobs [ 0 ] == 1 ) { vp8_dc_only_idct_add_mmx ( q [ 0 ] * dq [ 0 ] , dstu , stride , dstu , stride ) ; <S2SV_StartBug> vpx_memset ( q , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } if ( eobs [ 1 ] > 1 ) vp8_dequant_idct_add_mmx ( q + 16 , dq , dstu + 4 , stride ) ; else if ( eobs [ 1 ] == 1 ) { vp8_dc_only_idct_add_mmx ( q [ 16 ] * dq [ 0 ] , dstu + 4 , stride , dstu + 4 , stride ) ; <S2SV_StartBug> vpx_memset ( q + 16 , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } q += 32 ; dstu += 4 * stride ; eobs += 2 ; } for ( i = 0 ; i < 2 ; i ++ ) { if ( eobs [ 0 ] > 1 ) vp8_dequant_idct_add_mmx ( q , dq , dstv , stride ) ; else if ( eobs [ 0 ] == 1 ) { vp8_dc_only_idct_add_mmx ( q [ 0 ] * dq [ 0 ] , dstv , stride , dstv , stride ) ; <S2SV_StartBug> vpx_memset ( q , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } if ( eobs [ 1 ] > 1 ) vp8_dequant_idct_add_mmx ( q + 16 , dq , dstv + 4 , stride ) ; else if ( eobs [ 1 ] == 1 ) { vp8_dc_only_idct_add_mmx ( q [ 16 ] * dq [ 0 ] , dstv + 4 , stride , dstv + 4 , stride ) ; <S2SV_StartBug> vpx_memset ( q + 16 , 0 , 2 * sizeof ( q [ 0 ] ) ) ; <S2SV_EndBug> } q += 32 ; dstv += 4 * stride ; eobs += 2 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q , <S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q + <S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q , <S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( q +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20542\n\n```\nCWE-119 void edge_sparse_csr_reader_double ( const char * i_csr_file_in , unsigned int * * o_row_idx , unsigned int * * o_column_idx , double * * o_values , unsigned int * o_row_count , unsigned int * o_column_count , unsigned int * o_element_count ) { FILE * l_csr_file_handle ; const unsigned int l_line_length = 512 ; char l_line [ 512 + 1 ] ; unsigned int l_header_read = 0 ; unsigned int * l_row_idx_id = NULL ; unsigned int l_i = 0 ; l_csr_file_handle = fopen ( i_csr_file_in , \"r\" ) ; if ( l_csr_file_handle == NULL ) { fprintf ( stderr , \"cannot<S2SV_blank>open<S2SV_blank>CSR<S2SV_blank>file!\\\\n\" ) ; return ; } while ( fgets ( l_line , l_line_length , l_csr_file_handle ) != NULL ) { if ( strlen ( l_line ) == l_line_length ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>read<S2SV_blank>file<S2SV_blank>length!\\\\n\" ) ; return ; } if ( l_line [ 0 ] == '%' ) { continue ; } else { if ( l_header_read == 0 ) { <S2SV_StartBug> if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%u\" , o_row_count , o_column_count , o_element_count ) == 3 ) { <S2SV_EndBug> * o_column_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_element_count ) ) ; * o_row_idx = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_row_count + 1 ) ) ; * o_values = ( double * ) malloc ( sizeof ( double ) * ( * o_element_count ) ) ; l_row_idx_id = ( unsigned int * ) malloc ( sizeof ( unsigned int ) * ( * o_row_count ) ) ; if ( ( * o_row_idx == NULL ) || ( * o_column_idx == NULL ) || ( * o_values == NULL ) || ( l_row_idx_id == NULL ) ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>sp<S2SV_blank>data!\\\\n\" ) ; return ; } memset ( * o_row_idx , 0 , sizeof ( unsigned int ) * ( * o_row_count + 1 ) ) ; memset ( * o_column_idx , 0 , sizeof ( unsigned int ) * ( * o_element_count ) ) ; memset ( * o_values , 0 , sizeof ( double ) * ( * o_element_count ) ) ; memset ( l_row_idx_id , 0 , sizeof ( unsigned int ) * ( * o_row_count ) ) ; for ( l_i = 0 ; l_i < ( * o_row_count + 1 ) ; l_i ++ ) ( * o_row_idx ) [ l_i ] = ( * o_element_count ) ; ( * o_row_idx ) [ 0 ] = 0 ; l_i = 0 ; l_header_read = 1 ; } else { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>csr<S2SV_blank>description!\\\\n\" ) ; return ; } } else { unsigned int l_row , l_column ; double l_value ; if ( sscanf ( l_line , \"%u<S2SV_blank>%u<S2SV_blank>%lf\" , & l_row , & l_column , & l_value ) != 3 ) { fprintf ( stderr , \"could<S2SV_blank>not<S2SV_blank>read<S2SV_blank>element!\\\\n\" ) ; return ; } l_row -- ; l_column -- ; ( * o_column_idx ) [ l_i ] = l_column ; ( * o_values ) [ l_i ] = l_value ; l_i ++ ; l_row_idx_id [ l_row ] = 1 ; ( * o_row_idx ) [ l_row + 1 ] = l_i ; } } } fclose ( l_csr_file_handle ) ; if ( l_i != ( * o_element_count ) ) { fprintf ( stderr , \"we<S2SV_blank>were<S2SV_blank>not<S2SV_blank>able<S2SV_blank>to<S2SV_blank>read<S2SV_blank>all<S2SV_blank>elements!\\\\n\" ) ; return ; } for ( l_i = 0 ; l_i < ( * o_row_count ) ; l_i ++ ) { if ( l_row_idx_id [ l_i ] == 0 ) { ( * o_row_idx ) [ l_i + 1 ] = ( * o_row_idx ) [ l_i ] ; } } if ( l_row_idx_id != NULL ) { free ( l_row_idx_id ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( 3 == <S2SV_ModStart> , o_element_count ) && 0 != * o_row_count && 0 != * o_column_count && 0 != * o_element_count ) <S2SV_ModEnd> { * o_column_idx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3178\n\n```\nCWE-125 int main ( int argc , char * * argv ) { const char command0 [ ] = { 0x00 , 0x00 } ; char command1 [ ] = \"\\\\x01\\\\x00urn:schemas-upnp-org:device:InternetGatewayDevice\" ; char command2 [ ] = \"\\\\x02\\\\x00uuid:fc4ec57e-b051-11db-88f8-0060085db3f6::upnp:rootdevice\" ; const char command3 [ ] = { 0x03 , 0x00 } ; char command3compat [ ] = \"\\\\x03\\\\x00ssdp:all\" ; char command4 [ ] = \"\\\\x04\\\\x00test:test:test\" ; const char bad_command [ ] = { 0xff , 0xff } ; const char overflow [ ] = { 0x01 , 0xff , 0xff , 0xff , 0xff , 0xff , 0xff , 0xff } ; <S2SV_StartBug> const char command5 [ ] = { 0x05 , 0x00 } ; <S2SV_EndBug> int s ; int i ; void * tmp ; unsigned char * resp = NULL ; size_t respsize = 0 ; unsigned char buf [ 4096 ] ; ssize_t n ; int total = 0 ; const char * sockpath = \"/var/run/minissdpd.sock\" ; for ( i = 0 ; i < argc - 1 ; i ++ ) { if ( 0 == strcmp ( argv [ i ] , \"-s\" ) ) sockpath = argv [ ++ i ] ; } command1 [ 1 ] = sizeof ( command1 ) - 3 ; command2 [ 1 ] = sizeof ( command2 ) - 3 ; command3compat [ 1 ] = sizeof ( command3compat ) - 3 ; command4 [ 1 ] = sizeof ( command4 ) - 3 ; s = connect_unix_socket ( sockpath ) ; n = SENDCOMMAND ( command0 , sizeof ( command0 ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; if ( n > 0 ) { printversion ( buf , n ) ; } else { printf ( \"Command<S2SV_blank>0<S2SV_blank>(get<S2SV_blank>version)<S2SV_blank>not<S2SV_blank>supported\\\\n\" ) ; close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( command1 , sizeof ( command1 ) - 1 ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( command2 , sizeof ( command2 ) - 1 ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } buf [ 0 ] = 0 ; n = SENDCOMMAND ( command3 , sizeof ( command3 ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; if ( n == 0 ) { printf ( \"command3<S2SV_blank>failed,<S2SV_blank>testing<S2SV_blank>compatible<S2SV_blank>one\\\\n\" ) ; close ( s ) ; s = connect_unix_socket ( sockpath ) ; n = SENDCOMMAND ( command3compat , sizeof ( command3compat ) - 1 ) ; n = read ( s , buf , sizeof ( buf ) ) ; } printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printf ( \"Number<S2SV_blank>of<S2SV_blank>devices<S2SV_blank>%d\\\\n\" , ( int ) buf [ 0 ] ) ; while ( n > 0 ) { tmp = realloc ( resp , respsize + n ) ; if ( tmp == NULL ) { fprintf ( stderr , \"memory<S2SV_blank>allocation<S2SV_blank>error\\\\n\" ) ; break ; } resp = tmp ; respsize += n ; if ( n > 0 ) { memcpy ( resp + total , buf , n ) ; total += n ; } if ( n < ( ssize_t ) sizeof ( buf ) ) { break ; } n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; } if ( resp != NULL ) { printresponse ( resp , total ) ; free ( resp ) ; resp = NULL ; } if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( command4 , sizeof ( command4 ) ) ; n = SENDCOMMAND ( bad_command , sizeof ( bad_command ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( overflow , sizeof ( overflow ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; if ( n == 0 ) { close ( s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( command5 , sizeof ( command5 ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; <S2SV_StartBug> close ( s ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0x05 , 0x00 } ; const char bad_command4 [ ] = { 0x04 , 0x01 , 0x60 , 0x8f , 0xff , 0xff , 0xff , 0x7f <S2SV_ModStart> n ) ; if ( n == 0 ) { <S2SV_ModStart> s ) ; s = connect_unix_socket ( sockpath ) ; } n = SENDCOMMAND ( bad_command4 , sizeof ( bad_command4 ) ) ; n = read ( s , buf , sizeof ( buf ) ) ; printf ( \"Response<S2SV_blank>received<S2SV_blank>%d<S2SV_blank>bytes\\\\n\" , ( int ) n ) ; printresponse ( buf , n ) ; close ( s ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6976\n\n```\nCWE-200 void * vips_malloc ( VipsObject * object , size_t size ) { void * buf ; <S2SV_StartBug> buf = g_malloc ( size ) ; <S2SV_EndBug> if ( object ) { g_signal_connect ( object , \"postclose\" , G_CALLBACK ( vips_malloc_cb ) , buf ) ; object -> local_memory += size ; } return ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; buf = g_malloc0 <S2SV_ModEnd> ( size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2315\n\n```\nCWE-119 void traverse_commit_list ( struct rev_info * revs , show_commit_fn show_commit , show_object_fn show_object , void * data ) { int i ; struct commit * commit ; struct strbuf base ; strbuf_init ( & base , PATH_MAX ) ; while ( ( commit = get_revision ( revs ) ) != NULL ) { if ( commit -> tree ) add_pending_tree ( revs , commit -> tree ) ; show_commit ( commit , data ) ; } for ( i = 0 ; i < revs -> pending . nr ; i ++ ) { struct object_array_entry * pending = revs -> pending . objects + i ; struct object * obj = pending -> item ; const char * name = pending -> name ; const char * path = pending -> path ; if ( obj -> flags & ( UNINTERESTING | SEEN ) ) continue ; if ( obj -> type == OBJ_TAG ) { obj -> flags |= SEEN ; <S2SV_StartBug> show_object ( obj , NULL , name , data ) ; <S2SV_EndBug> continue ; } if ( ! path ) path = \"\" ; if ( obj -> type == OBJ_TREE ) { process_tree ( revs , ( struct tree * ) obj , show_object , & base , path , data ) ; continue ; } if ( obj -> type == OBJ_BLOB ) { process_blob ( revs , ( struct blob * ) obj , show_object , <S2SV_StartBug> NULL , path , data ) ; <S2SV_EndBug> continue ; } die ( \"unknown<S2SV_blank>pending<S2SV_blank>object<S2SV_blank>%s<S2SV_blank>(%s)\" , oid_to_hex ( & obj -> oid ) , name ) ; } object_array_clear ( & revs -> pending ) ; strbuf_release ( & base ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( obj , <S2SV_ModEnd> name , data <S2SV_ModStart> , show_object , & base <S2SV_ModEnd> , path ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4335\n\n```\nCWE-17 static void f_parser ( lua_State * L , void * ud ) { int i ; Proto * tf ; Closure * cl ; struct SParser * p = cast ( struct SParser * , ud ) ; int c = luaZ_lookahead ( p -> z ) ; luaC_checkGC ( L ) ; <S2SV_StartBug> tf = ( ( c == LUA_SIGNATURE [ 0 ] ) ? luaU_undump : luaY_parser ) ( L , p -> z , <S2SV_EndBug> & p -> buff , p -> name ) ; cl = luaF_newLclosure ( L , tf -> nups , hvalue ( gt ( L ) ) ) ; cl -> l . p = tf ; for ( i = 0 ; i < tf -> nups ; i ++ ) cl -> l . upvals [ i ] = luaF_newupval ( L ) ; setclvalue ( L , L -> top , cl ) ; incr_top ( L ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tf = ( <S2SV_ModEnd> luaY_parser ) (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-16166\n\n```\nCWE-200 void update_process_times ( int user_tick ) { struct task_struct * p = current ; account_process_tick ( p , user_tick ) ; run_local_timers ( ) ; rcu_sched_clock_irq ( user_tick ) ; # ifdef CONFIG_IRQ_WORK if ( in_irq ( ) ) irq_work_tick ( ) ; # endif scheduler_tick ( ) ; if ( IS_ENABLED ( CONFIG_POSIX_TIMERS ) ) run_posix_cpu_timers ( ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; this_cpu_add ( net_rand_state . s1 , rol32 ( jiffies , 24 ) + user_tick ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_skip_fractional_mv_step ( MACROBLOCK * mb , BLOCK * b , BLOCKD * d , int_mv * bestmv , int_mv * ref_mv , int error_per_bit , const vp8_variance_fn_ptr_t * vfp , int * mvcost [ 2 ] , int * distortion , unsigned int * sse ) { ( void ) b ; ( void ) d ; ( void ) ref_mv ; ( void ) error_per_bit ; ( void ) vfp ; <S2SV_StartBug> ( void ) mvcost ; <S2SV_EndBug> ( void ) distortion ; ( void ) sse ; bestmv -> as_mv . row <<= 3 ; bestmv -> as_mv . col <<= 3 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( void ) mb ; ( void )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0830\n\n```\nCWE-119 static future_t * init ( void ) { pthread_mutex_init ( & lock , NULL ) ; config = config_new ( CONFIG_FILE_PATH ) ; if ( ! config ) { LOG_WARN ( LOG_TAG , \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>load<S2SV_blank>config<S2SV_blank>file;<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>transcode<S2SV_blank>legacy<S2SV_blank>file.\" , __func__ ) ; config = btif_config_transcode ( LEGACY_CONFIG_FILE_PATH ) ; if ( ! config ) { LOG_WARN ( LOG_TAG , \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>transcode<S2SV_blank>legacy<S2SV_blank>file,<S2SV_blank>starting<S2SV_blank>unconfigured.\" , __func__ ) ; config = config_new_empty ( ) ; if ( ! config ) { LOG_ERROR ( LOG_TAG , \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>a<S2SV_blank>config<S2SV_blank>object.\" , __func__ ) ; goto error ; } } if ( config_save ( config , CONFIG_FILE_PATH ) ) unlink ( LEGACY_CONFIG_FILE_PATH ) ; } <S2SV_StartBug> alarm_timer = alarm_new ( ) ; <S2SV_EndBug> if ( ! alarm_timer ) { LOG_ERROR ( LOG_TAG , \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>alarm.\" , __func__ ) ; goto error ; } return future_new_immediate ( FUTURE_SUCCESS ) ; error : ; alarm_free ( alarm_timer ) ; config_free ( config ) ; pthread_mutex_destroy ( & lock ) ; alarm_timer = NULL ; config = NULL ; return future_new_immediate ( FUTURE_FAIL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } btif_config_devcache_cleanup ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2100\n\n```\nCWE-189 static int ext4_fill_flex_info ( struct super_block * sb ) { struct ext4_sb_info * sbi = EXT4_SB ( sb ) ; struct ext4_group_desc * gdp = NULL ; ext4_group_t flex_group_count ; ext4_group_t flex_group ; <S2SV_StartBug> int groups_per_flex = 0 ; <S2SV_EndBug> size_t size ; int i ; sbi -> s_log_groups_per_flex = sbi -> s_es -> s_log_groups_per_flex ; <S2SV_StartBug> groups_per_flex = 1 << sbi -> s_log_groups_per_flex ; <S2SV_EndBug> <S2SV_StartBug> if ( groups_per_flex < 2 ) { <S2SV_EndBug> sbi -> s_log_groups_per_flex = 0 ; return 1 ; } flex_group_count = ( ( sbi -> s_groups_count + groups_per_flex - 1 ) + ( ( le16_to_cpu ( sbi -> s_es -> s_reserved_gdt_blocks ) + 1 ) << EXT4_DESC_PER_BLOCK_BITS ( sb ) ) ) / groups_per_flex ; size = flex_group_count * sizeof ( struct flex_groups ) ; sbi -> s_flex_groups = ext4_kvzalloc ( size , GFP_KERNEL ) ; if ( sbi -> s_flex_groups == NULL ) { ext4_msg ( sb , KERN_ERR , \"not<S2SV_blank>enough<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>%u<S2SV_blank>flex<S2SV_blank>groups\" , flex_group_count ) ; goto failed ; } for ( i = 0 ; i < sbi -> s_groups_count ; i ++ ) { gdp = ext4_get_group_desc ( sb , i , NULL ) ; flex_group = ext4_flex_group ( sbi , i ) ; atomic_add ( ext4_free_inodes_count ( sb , gdp ) , & sbi -> s_flex_groups [ flex_group ] . free_inodes ) ; atomic_add ( ext4_free_group_clusters ( sb , gdp ) , & sbi -> s_flex_groups [ flex_group ] . free_clusters ) ; atomic_add ( ext4_used_dirs_count ( sb , gdp ) , & sbi -> s_flex_groups [ flex_group ] . used_dirs ) ; } return 1 ; failed : return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ext4_group_t flex_group ; unsigned <S2SV_ModStart> -> s_log_groups_per_flex ; if ( sbi -> s_log_groups_per_flex < 1 || sbi -> s_log_groups_per_flex > 31 ) { sbi -> s_log_groups_per_flex = 0 ; return 1 ; } <S2SV_ModStart> -> s_log_groups_per_flex ; <S2SV_ModEnd> flex_group_count = (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static int32_t scsi_send_command ( SCSIRequest * req , uint8_t * buf ) { SCSIDiskReq * r = DO_UPCAST ( SCSIDiskReq , req , req ) ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , req -> dev ) ; int32_t len ; uint8_t command ; <S2SV_StartBug> uint8_t * outbuf ; <S2SV_EndBug> int rc ; <S2SV_StartBug> command = buf [ 0 ] ; <S2SV_EndBug> outbuf = ( uint8_t * ) r -> iov . iov_base ; DPRINTF ( \"Command:<S2SV_blank>lun=%d<S2SV_blank>tag=0x%x<S2SV_blank>data=0x%02x\" , req -> lun , req -> tag , buf [ 0 ] ) ; # ifdef DEBUG_SCSI { int i ; for ( i = 1 ; i < r -> req . cmd . len ; i ++ ) { printf ( \"<S2SV_blank>0x%02x\" , buf [ i ] ) ; } printf ( \"\\\\n\" ) ; } # endif switch ( command ) { case TEST_UNIT_READY : case INQUIRY : case MODE_SENSE : case MODE_SENSE_10 : case RESERVE : case RESERVE_10 : case RELEASE : case RELEASE_10 : case START_STOP : case ALLOW_MEDIUM_REMOVAL : case READ_CAPACITY_10 : case READ_TOC : case GET_CONFIGURATION : case SERVICE_ACTION_IN_16 : case VERIFY_10 : <S2SV_StartBug> rc = scsi_disk_emulate_command ( r , outbuf ) ; <S2SV_EndBug> if ( rc < 0 ) { return 0 ; } r -> iov . iov_len = rc ; break ; case SYNCHRONIZE_CACHE : bdrv_acct_start ( s -> bs , & r -> acct , 0 , BDRV_ACCT_FLUSH ) ; r -> req . aiocb = bdrv_aio_flush ( s -> bs , scsi_flush_complete , r ) ; if ( r -> req . aiocb == NULL ) { scsi_flush_complete ( r , - EIO ) ; } return 0 ; case READ_6 : case READ_10 : case READ_12 : case READ_16 : len = r -> req . cmd . xfer / s -> qdev . blocksize ; DPRINTF ( \"Read<S2SV_blank>(sector<S2SV_blank>%\" PRId64 \",<S2SV_blank>count<S2SV_blank>%d)\\\\n\" , r -> req . cmd . lba , len ) ; if ( r -> req . cmd . lba > s -> max_lba ) goto illegal_lba ; r -> sector = r -> req . cmd . lba * s -> cluster_size ; r -> sector_count = len * s -> cluster_size ; break ; case WRITE_6 : case WRITE_10 : case WRITE_12 : case WRITE_16 : case WRITE_VERIFY_10 : case WRITE_VERIFY_12 : case WRITE_VERIFY_16 : len = r -> req . cmd . xfer / s -> qdev . blocksize ; DPRINTF ( \"Write<S2SV_blank>%s(sector<S2SV_blank>%\" PRId64 \",<S2SV_blank>count<S2SV_blank>%d)\\\\n\" , ( command & 0xe ) == 0xe ? \"And<S2SV_blank>Verify<S2SV_blank>\" : \"\" , r -> req . cmd . lba , len ) ; if ( r -> req . cmd . lba > s -> max_lba ) goto illegal_lba ; r -> sector = r -> req . cmd . lba * s -> cluster_size ; r -> sector_count = len * s -> cluster_size ; break ; case MODE_SELECT : DPRINTF ( \"Mode<S2SV_blank>Select(6)<S2SV_blank>(len<S2SV_blank>%lu)\\\\n\" , ( long ) r -> req . cmd . xfer ) ; if ( r -> req . cmd . xfer > 12 ) { goto fail ; } break ; case MODE_SELECT_10 : DPRINTF ( \"Mode<S2SV_blank>Select(10)<S2SV_blank>(len<S2SV_blank>%lu)\\\\n\" , ( long ) r -> req . cmd . xfer ) ; if ( r -> req . cmd . xfer > 16 ) { goto fail ; } break ; case SEEK_6 : case SEEK_10 : DPRINTF ( \"Seek(%d)<S2SV_blank>(sector<S2SV_blank>%\" PRId64 \")\\\\n\" , command == SEEK_6 ? 6 : 10 , r -> req . cmd . lba ) ; if ( r -> req . cmd . lba > s -> max_lba ) { goto illegal_lba ; } break ; case WRITE_SAME_16 : len = r -> req . cmd . xfer / s -> qdev . blocksize ; DPRINTF ( \"WRITE<S2SV_blank>SAME(16)<S2SV_blank>(sector<S2SV_blank>%\" PRId64 \",<S2SV_blank>count<S2SV_blank>%d)\\\\n\" , r -> req . cmd . lba , len ) ; if ( r -> req . cmd . lba > s -> max_lba ) { goto illegal_lba ; } if ( ! ( buf [ 1 ] & 0x8 ) ) { goto fail ; } rc = bdrv_discard ( s -> bs , r -> req . cmd . lba * s -> cluster_size , len * s -> cluster_size ) ; if ( rc < 0 ) { goto fail ; } break ; case REQUEST_SENSE : abort ( ) ; default : DPRINTF ( \"Unknown<S2SV_blank>SCSI<S2SV_blank>command<S2SV_blank>(%2.2x)\\\\n\" , buf [ 0 ] ) ; scsi_check_condition ( r , SENSE_CODE ( INVALID_OPCODE ) ) ; return 0 ; fail : scsi_check_condition ( r , SENSE_CODE ( INVALID_FIELD ) ) ; return 0 ; illegal_lba : scsi_check_condition ( r , SENSE_CODE ( LBA_OUT_OF_RANGE ) ) ; return 0 ; } if ( r -> sector_count == 0 && r -> iov . iov_len == 0 ) { scsi_req_complete ( & r -> req , GOOD ) ; } len = r -> sector_count * 512 + r -> iov . iov_len ; if ( r -> req . cmd . mode == SCSI_XFER_TO_DEV ) { return - len ; } else { if ( ! r -> sector_count ) r -> sector_count = - 1 ; return len ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint8_t command ; <S2SV_ModEnd> int rc ; <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ; DPRINTF ( <S2SV_ModStart> scsi_disk_emulate_command ( r <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6310\n\n```\nCWE-125 int parse_file ( FILE * input_file , char * directory , char * body_filename , char * body_pref , int flags ) { uint32 d ; uint16 key ; Attr * attr = NULL ; File * file = NULL ; int rtf_size = 0 , html_size = 0 ; MessageBody body ; memset ( & body , '\\\\0' , sizeof ( MessageBody ) ) ; g_flags = flags ; d = geti32 ( input_file ) ; if ( d != TNEF_SIGNATURE ) { fprintf ( stdout , \"Seems<S2SV_blank>not<S2SV_blank>to<S2SV_blank>be<S2SV_blank>a<S2SV_blank>TNEF<S2SV_blank>file\\\\n\" ) ; return 1 ; } key = geti16 ( input_file ) ; debug_print ( \"TNEF<S2SV_blank>Key:<S2SV_blank>%hx\\\\n\" , key ) ; while ( data_left ( input_file ) ) { attr = read_object ( input_file ) ; if ( attr == NULL ) break ; if ( attr -> name == attATTACHRENDDATA ) { if ( file ) { file_write ( file , directory ) ; file_free ( file ) ; } else { file = CHECKED_XCALLOC ( File , 1 ) ; } } switch ( attr -> lvl_type ) { case LVL_MESSAGE : if ( attr -> name == attBODY ) { body . text_body = get_text_data ( attr ) ; } else if ( attr -> name == attMAPIPROPS ) { MAPI_Attr * * mapi_attrs = mapi_attr_read ( attr -> len , attr -> buf ) ; if ( mapi_attrs ) { int i ; for ( i = 0 ; mapi_attrs [ i ] ; i ++ ) { MAPI_Attr * a = mapi_attrs [ i ] ; <S2SV_StartBug> if ( a -> name == MAPI_BODY_HTML ) <S2SV_EndBug> { body . html_bodies = get_html_data ( a ) ; html_size = a -> num_values ; } <S2SV_StartBug> else if ( a -> name == MAPI_RTF_COMPRESSED ) <S2SV_EndBug> { body . rtf_bodies = get_rtf_data ( a ) ; rtf_size = a -> num_values ; } } mapi_attr_free_list ( mapi_attrs ) ; XFREE ( mapi_attrs ) ; } } break ; case LVL_ATTACHMENT : file_add_attr ( file , attr ) ; break ; default : fprintf ( stderr , \"Invalid<S2SV_blank>lvl<S2SV_blank>type<S2SV_blank>on<S2SV_blank>attribute:<S2SV_blank>%d\\\\n\" , attr -> lvl_type ) ; return 1 ; break ; } attr_free ( attr ) ; XFREE ( attr ) ; } if ( file ) { file_write ( file , directory ) ; file_free ( file ) ; XFREE ( file ) ; } if ( flags & SAVEBODY ) { int i = 0 ; int all_flag = 0 ; if ( strcmp ( body_pref , \"all\" ) == 0 ) { all_flag = 1 ; body_pref = \"rht\" ; } for ( ; i < 3 ; i ++ ) { File * * files = get_body_files ( body_filename , body_pref [ i ] , & body ) ; if ( files ) { int j = 0 ; for ( ; files [ j ] ; j ++ ) { file_write ( files [ j ] , directory ) ; file_free ( files [ j ] ) ; XFREE ( files [ j ] ) ; } XFREE ( files ) ; if ( ! all_flag ) break ; } } } if ( body . text_body ) { free_bodies ( body . text_body , 1 ) ; XFREE ( body . text_body ) ; } if ( rtf_size > 0 ) { free_bodies ( body . rtf_bodies , rtf_size ) ; XFREE ( body . rtf_bodies ) ; } if ( html_size > 0 ) { free_bodies ( body . html_bodies , html_size ) ; XFREE ( body . html_bodies ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( a -> type == szMAPI_BINARY && a -> <S2SV_ModStart> else if ( a -> type == szMAPI_BINARY &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-17294\n\n```\nCWE-125 static int matchCurrentInput ( const InString * input , int pos , const widechar * passInstructions , int passIC ) { int k ; int kk = pos ; <S2SV_StartBug> for ( k = passIC + 2 ; k < passIC + 2 + passInstructions [ passIC + 1 ] ; k ++ ) <S2SV_EndBug> if ( input -> chars [ kk ] == ENDSEGMENT || passInstructions [ k ] != input -> chars [ kk ++ ] ) return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 2 ; ( ( <S2SV_ModStart> + 1 ] ) && ( kk < input -> length ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13003\n\n```\nCWE-125 void lmp_print ( netdissect_options * ndo , register const u_char * pptr , register u_int len ) { const struct lmp_common_header * lmp_com_header ; const struct lmp_object_header * lmp_obj_header ; const u_char * tptr , * obj_tptr ; <S2SV_StartBug> int tlen , lmp_obj_len , lmp_obj_ctype , obj_tlen ; <S2SV_EndBug> int hexdump ; <S2SV_StartBug> int offset , subobj_type , subobj_len , total_subobj_len ; <S2SV_EndBug> int link_type ; union { float f ; uint32_t i ; } bw ; tptr = pptr ; lmp_com_header = ( const struct lmp_common_header * ) pptr ; ND_TCHECK ( * lmp_com_header ) ; if ( LMP_EXTRACT_VERSION ( lmp_com_header -> version_res [ 0 ] ) != LMP_VERSION ) { ND_PRINT ( ( ndo , \"LMP<S2SV_blank>version<S2SV_blank>%u<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , LMP_EXTRACT_VERSION ( lmp_com_header -> version_res [ 0 ] ) ) ) ; return ; } if ( ndo -> ndo_vflag < 1 ) { ND_PRINT ( ( ndo , \"LMPv%u<S2SV_blank>%s<S2SV_blank>Message,<S2SV_blank>length:<S2SV_blank>%u\" , LMP_EXTRACT_VERSION ( lmp_com_header -> version_res [ 0 ] ) , tok2str ( lmp_msg_type_values , \"unknown<S2SV_blank>(%u)\" , lmp_com_header -> msg_type ) , len ) ) ; return ; } tlen = EXTRACT_16BITS ( lmp_com_header -> length ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\tLMPv%u,<S2SV_blank>msg-type:<S2SV_blank>%s,<S2SV_blank>Flags:<S2SV_blank>[%s],<S2SV_blank>length:<S2SV_blank>%u\" , LMP_EXTRACT_VERSION ( lmp_com_header -> version_res [ 0 ] ) , tok2str ( lmp_msg_type_values , \"unknown,<S2SV_blank>type:<S2SV_blank>%u\" , lmp_com_header -> msg_type ) , bittok2str ( lmp_header_flag_values , \"none\" , lmp_com_header -> flags ) , tlen ) ) ; <S2SV_StartBug> tptr += sizeof ( const struct lmp_common_header ) ; <S2SV_EndBug> tlen -= sizeof ( const struct lmp_common_header ) ; while ( tlen > 0 ) { ND_TCHECK2 ( * tptr , sizeof ( struct lmp_object_header ) ) ; lmp_obj_header = ( const struct lmp_object_header * ) tptr ; lmp_obj_len = EXTRACT_16BITS ( lmp_obj_header -> length ) ; lmp_obj_ctype = ( lmp_obj_header -> ctype ) & 0x7f ; <S2SV_StartBug> if ( lmp_obj_len % 4 || lmp_obj_len < 4 ) <S2SV_EndBug> return ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Object<S2SV_blank>(%u),<S2SV_blank>Class-Type:<S2SV_blank>%s<S2SV_blank>(%u)<S2SV_blank>Flags:<S2SV_blank>[%snegotiable],<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( lmp_obj_values , \"Unknown\" , lmp_obj_header -> class_num ) , lmp_obj_header -> class_num , tok2str ( lmp_ctype_values , \"Unknown\" , ( ( lmp_obj_header -> class_num ) << 8 ) + lmp_obj_ctype ) , lmp_obj_ctype , ( lmp_obj_header -> ctype ) & 0x80 ? \"\" : \"non-\" , <S2SV_StartBug> lmp_obj_len ) ) ; <S2SV_EndBug> obj_tptr = tptr + sizeof ( struct lmp_object_header ) ; obj_tlen = lmp_obj_len - sizeof ( struct lmp_object_header ) ; ND_TCHECK2 ( * tptr , lmp_obj_len ) ; hexdump = FALSE ; switch ( lmp_obj_header -> class_num ) { case LMP_OBJ_CC_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_LOC : case LMP_CTYPE_RMT : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Control<S2SV_blank>Channel<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , <S2SV_EndBug> EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_LINK_ID : case LMP_OBJ_INTERFACE_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4_LOC : case LMP_CTYPE_IPV4_RMT : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv4<S2SV_blank>Link<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , <S2SV_EndBug> ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; case LMP_CTYPE_IPV6_LOC : case LMP_CTYPE_IPV6_RMT : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>IPv6<S2SV_blank>Link<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , <S2SV_EndBug> ip6addr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; case LMP_CTYPE_UNMD_LOC : <S2SV_StartBug> case LMP_CTYPE_UNMD_RMT : <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Link<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_MESSAGE_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_1 : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , <S2SV_EndBug> EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; <S2SV_StartBug> case LMP_CTYPE_2 : <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Message<S2SV_blank>ID<S2SV_blank>Ack:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_NODE_ID : switch ( lmp_obj_ctype ) { case LMP_CTYPE_LOC : case LMP_CTYPE_RMT : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Node<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , <S2SV_EndBug> ipaddr_string ( ndo , obj_tptr ) , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_CONFIG : switch ( lmp_obj_ctype ) { case LMP_CTYPE_HELLO_CONFIG : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Hello<S2SV_blank>Interval:<S2SV_blank>%u\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Hello<S2SV_blank>Dead<S2SV_blank>Interval:<S2SV_blank>%u\" , <S2SV_EndBug> EXTRACT_16BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_HELLO : switch ( lmp_obj_ctype ) { case LMP_CTYPE_HELLO : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Tx<S2SV_blank>Seq:<S2SV_blank>%u,<S2SV_blank>Rx<S2SV_blank>Seq:<S2SV_blank>%u\" , <S2SV_EndBug> EXTRACT_32BITS ( obj_tptr ) , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_TE_LINK : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , <S2SV_EndBug> bittok2str ( lmp_obj_te_link_flag_values , \"none\" , <S2SV_StartBug> EXTRACT_16BITS ( obj_tptr ) >> 8 ) ) ) ; <S2SV_EndBug> switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4 : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , <S2SV_StartBug> ipaddr_string ( ndo , obj_tptr + 4 ) , <S2SV_EndBug> EXTRACT_32BITS ( obj_tptr + 4 ) , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; break ; <S2SV_StartBug> case LMP_CTYPE_IPV6 : <S2SV_EndBug> case LMP_CTYPE_UNMD : default : hexdump = TRUE ; } break ; case LMP_OBJ_DATA_LINK : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , <S2SV_EndBug> bittok2str ( lmp_obj_data_link_flag_values , \"none\" , <S2SV_StartBug> EXTRACT_16BITS ( obj_tptr ) >> 8 ) ) ) ; <S2SV_EndBug> switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4 : case LMP_CTYPE_UNMD : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; total_subobj_len = lmp_obj_len - 16 ; offset = 12 ; while ( total_subobj_len > 0 && hexdump == FALSE ) { <S2SV_StartBug> subobj_type = EXTRACT_16BITS ( obj_tptr + offset ) >> 8 ; <S2SV_EndBug> <S2SV_StartBug> subobj_len = EXTRACT_16BITS ( obj_tptr + offset ) & 0x00FF ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Subobject,<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Length:<S2SV_blank>%u\" , tok2str ( lmp_data_link_subobj , \"Unknown\" , subobj_type ) , subobj_type , subobj_len ) ) ; switch ( subobj_type ) { case INT_SWITCHING_TYPE_SUBOBJ : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Switching<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( gmpls_switch_cap_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr + offset + 2 ) >> 8 ) , EXTRACT_16BITS ( obj_tptr + offset + 2 ) >> 8 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Encoding<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( gmpls_encoding_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr + offset + 2 ) & 0x00FF ) , EXTRACT_16BITS ( obj_tptr + offset + 2 ) & 0x00FF ) ) ; <S2SV_StartBug> bw . i = EXTRACT_32BITS ( obj_tptr + offset + 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Min<S2SV_blank>Reservable<S2SV_blank>Bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; <S2SV_StartBug> bw . i = EXTRACT_32BITS ( obj_tptr + offset + 8 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Max<S2SV_blank>Reservable<S2SV_blank>Bandwidth:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; break ; case WAVELENGTH_SUBOBJ : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Wavelength:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr + offset + 4 ) ) ) ; break ; default : hexdump = TRUE ; <S2SV_StartBug> break ; <S2SV_EndBug> } total_subobj_len -= subobj_len ; offset += subobj_len ; } break ; case LMP_CTYPE_IPV6 : default : hexdump = TRUE ; } break ; <S2SV_StartBug> case LMP_OBJ_VERIFY_BEGIN : <S2SV_EndBug> switch ( lmp_obj_ctype ) { case LMP_CTYPE_1 : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>%s\" , <S2SV_EndBug> bittok2str ( lmp_obj_begin_verify_flag_values , \"none\" , EXTRACT_16BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Interval:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Data<S2SV_blank>links:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Encoding<S2SV_blank>type:<S2SV_blank>%s\" , tok2str ( gmpls_encoding_values , \"Unknown\" , * ( obj_tptr + 8 ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Transport<S2SV_blank>Mechanism:<S2SV_blank>%u<S2SV_blank>(0x%x)%s\" , EXTRACT_16BITS ( obj_tptr + 10 ) , EXTRACT_16BITS ( obj_tptr + 10 ) , EXTRACT_16BITS ( obj_tptr + 10 ) & 8000 ? \"<S2SV_blank>(Payload<S2SV_blank>test<S2SV_blank>messages<S2SV_blank>capable)\" : \"\" ) ) ; bw . i = EXTRACT_32BITS ( obj_tptr + 12 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Transmission<S2SV_blank>Rate:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , bw . f * 8 / 1000000 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Wavelength:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr + 16 ) ) ) ; break ; default : hexdump = TRUE ; } break ; <S2SV_StartBug> case LMP_OBJ_VERIFY_BEGIN_ACK : <S2SV_EndBug> switch ( lmp_obj_ctype ) { <S2SV_StartBug> case LMP_CTYPE_1 : <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Dead<S2SV_blank>Interval:<S2SV_blank>%u\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Transport<S2SV_blank>Response:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; break ; default : hexdump = TRUE ; } break ; <S2SV_StartBug> case LMP_OBJ_VERIFY_ID : <S2SV_EndBug> switch ( lmp_obj_ctype ) { <S2SV_StartBug> case LMP_CTYPE_1 : <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>ID:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr ) ) ) ; break ; default : hexdump = TRUE ; } break ; <S2SV_StartBug> case LMP_OBJ_CHANNEL_STATUS : <S2SV_EndBug> switch ( lmp_obj_ctype ) { <S2SV_StartBug> case LMP_CTYPE_IPV4 : <S2SV_EndBug> case LMP_CTYPE_UNMD : offset = 0 ; while ( offset < ( lmp_obj_len - ( int ) sizeof ( struct lmp_object_header ) ) ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Active:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ? \"Allocated\" : \"Non-allocated\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Direction:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ? \"Transmit\" : \"Receive\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Channel<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_obj_channel_status_values , \"Unknown\" , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) ) ; offset += 8 ; } break ; case LMP_CTYPE_IPV6 : default : hexdump = TRUE ; } break ; <S2SV_StartBug> case LMP_OBJ_CHANNEL_STATUS_REQ : <S2SV_EndBug> switch ( lmp_obj_ctype ) { <S2SV_StartBug> case LMP_CTYPE_IPV4 : <S2SV_EndBug> case LMP_CTYPE_UNMD : offset = 0 ; while ( offset < ( lmp_obj_len - ( int ) sizeof ( struct lmp_object_header ) ) ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; offset += 4 ; } break ; case LMP_CTYPE_IPV6 : default : hexdump = TRUE ; } break ; case LMP_OBJ_ERROR_CODE : switch ( lmp_obj_ctype ) { case LMP_CTYPE_BEGIN_VERIFY_ERROR : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s\" , <S2SV_StartBug> bittok2str ( lmp_obj_begin_verify_error_values , <S2SV_EndBug> \"none\" , <S2SV_StartBug> EXTRACT_32BITS ( obj_tptr ) ) ) ) ; <S2SV_EndBug> break ; case LMP_CTYPE_LINK_SUMMARY_ERROR : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s\" , bittok2str ( lmp_obj_link_summary_error_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_SERVICE_CONFIG : switch ( lmp_obj_ctype ) { case LMP_CTYPE_SERVICE_CONFIG_SP : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_sp_flag_values , \"none\" , EXTRACT_16BITS ( obj_tptr ) >> 8 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>UNI<S2SV_blank>Version:<S2SV_blank>%u\" , <S2SV_StartBug> EXTRACT_16BITS ( obj_tptr ) & 0x00FF ) ) ; <S2SV_EndBug> break ; <S2SV_StartBug> case LMP_CTYPE_SERVICE_CONFIG_CPSA : <S2SV_EndBug> <S2SV_StartBug> link_type = EXTRACT_16BITS ( obj_tptr ) >> 8 ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Link<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_link_type_values , \"Unknown\" , link_type ) , link_type ) ) ; if ( link_type == LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SDH ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Signal<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_signal_type_sdh_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr ) & 0x00FF ) , EXTRACT_16BITS ( obj_tptr ) & 0x00FF ) ) ; } if ( link_type == LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SONET ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Signal<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_signal_type_sonet_values , \"Unknown\" , EXTRACT_16BITS ( obj_tptr ) & 0x00FF ) , EXTRACT_16BITS ( obj_tptr ) & 0x00FF ) ) ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Transparency:<S2SV_blank>%s\" , <S2SV_StartBug> bittok2str ( lmp_obj_service_config_cpsa_tp_flag_values , <S2SV_EndBug> \"none\" , <S2SV_StartBug> EXTRACT_16BITS ( obj_tptr + 2 ) >> 8 ) ) ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Contiguous<S2SV_blank>Concatenation<S2SV_blank>Types:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_cpsa_cct_flag_values , \"none\" , EXTRACT_16BITS ( obj_tptr + 2 ) >> 8 & 0x00FF ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Minimum<S2SV_blank>NCC:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr + 4 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Maximum<S2SV_blank>NCC:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Minimum<S2SV_blank>NVC:%u\" , EXTRACT_16BITS ( obj_tptr + 8 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Maximum<S2SV_blank>NVC:%u\" , EXTRACT_16BITS ( obj_tptr + 10 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + 12 ) , EXTRACT_32BITS ( obj_tptr + 12 ) ) ) ; break ; case LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Transparency<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_nsa_transparency_flag_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>TCM<S2SV_blank>Monitoring<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_nsa_tcm_flag_values , \"none\" , EXTRACT_16BITS ( obj_tptr + 6 ) & 0x00FF ) ) ) ; break ; case LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Diversity:<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_nsa_network_diversity_flag_values , \"none\" , EXTRACT_16BITS ( obj_tptr + 2 ) & 0x00FF ) ) ) ; break ; default : hexdump = TRUE ; } break ; default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , obj_tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , obj_tlen ) ; break ; } if ( ndo -> ndo_vflag > 1 || hexdump == TRUE ) print_unknown_data ( ndo , tptr + sizeof ( struct lmp_object_header ) , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , lmp_obj_len - sizeof ( struct lmp_object_header ) ) ; tptr += lmp_obj_len ; tlen -= lmp_obj_len ; } return ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>packet<S2SV_blank>exceeded<S2SV_blank>snapshot\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * obj_tptr ; u_int <S2SV_ModEnd> tlen , lmp_obj_len <S2SV_ModStart> int hexdump ; u_int offset ; u_int <S2SV_ModEnd> link_type ; union <S2SV_ModStart> ) ) ; if ( tlen < sizeof ( const struct lmp_common_header ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short)\" ) ) ; return ; } if ( tlen > len ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>long)\" ) ) ; tlen = len ; } <S2SV_ModStart> & 0x7f ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> ) ) ; if ( lmp_obj_len < 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(too<S2SV_blank>short)\" ) ) ; return ; } if ( ( lmp_obj_len % 4 ) != 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4)\" ) ) ; return ; } <S2SV_ModStart> case LMP_CTYPE_RMT : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_CTYPE_IPV4_RMT : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_CTYPE_IPV6_RMT : if ( obj_tlen != 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_CTYPE_UNMD_RMT : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_CTYPE_1 : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_CTYPE_2 : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_CTYPE_RMT : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_CTYPE_HELLO_CONFIG : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_CTYPE_HELLO : if ( obj_tlen != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> case LMP_OBJ_TE_LINK : switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4 : if ( obj_tlen != 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; break ; case LMP_CTYPE_IPV6 : if ( obj_tlen != 36 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_te_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; <S2SV_ModEnd> ND_PRINT ( ( <S2SV_ModStart> \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Link-ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_32BITS ( obj_tptr + 20 ) ) ) ; break ; case LMP_CTYPE_UNMD : if ( obj_tlen != 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_te_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Link-ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Link-ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( <S2SV_ModEnd> obj_tptr + 8 <S2SV_ModStart> ; break ; <S2SV_ModEnd> default : hexdump <S2SV_ModStart> case LMP_OBJ_DATA_LINK : switch ( lmp_obj_ctype ) { case LMP_CTYPE_IPV4 : if ( obj_tlen < 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } <S2SV_ModStart> , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ipaddr_string ( ndo , obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; if ( lmp_print_data_link_subobjs ( ndo , obj_tptr , obj_tlen - 12 , 12 ) ) hexdump = TRUE ; break ; case LMP_CTYPE_IPV6 : if ( obj_tlen < 36 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_data_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , ip6addr_string ( ndo , obj_tptr + 20 ) , EXTRACT_32BITS ( obj_tptr + 20 ) ) ) ; if ( lmp_print_data_link_subobjs ( ndo , obj_tptr , obj_tlen - 36 , 36 ) ) hexdump = TRUE ; break ; case LMP_CTYPE_UNMD : if ( obj_tlen < 12 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>[%s]\" , bittok2str ( lmp_obj_data_link_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Remote<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 4 ) , EXTRACT_32BITS ( obj_tptr + 8 ) , EXTRACT_32BITS ( obj_tptr + 8 ) ) ) ; if ( lmp_print_data_link_subobjs ( ndo , obj_tptr , obj_tlen - 12 , 12 ) ) hexdump = TRUE ; break ; default : hexdump = TRUE ; } break ; case LMP_OBJ_VERIFY_BEGIN : switch ( lmp_obj_ctype ) { case LMP_CTYPE_1 : if ( obj_tlen != 20 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_begin_verify_flag_values , \"none\" , <S2SV_ModStart> ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Interval:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Data<S2SV_blank>links:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr + 4 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Encoding<S2SV_blank>type:<S2SV_blank>%s\" , tok2str ( gmpls_encoding_values , \"Unknown\" , * ( obj_tptr + <S2SV_ModEnd> 8 ) ) <S2SV_ModStart> ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Transport<S2SV_blank>Mechanism:<S2SV_blank>%u<S2SV_blank>(0x%x)%s\" , <S2SV_ModEnd> EXTRACT_16BITS ( obj_tptr <S2SV_ModStart> ( obj_tptr + 10 ) , <S2SV_ModEnd> EXTRACT_16BITS ( obj_tptr <S2SV_ModStart> ( obj_tptr + 10 ) , EXTRACT_16BITS ( obj_tptr + 10 ) & 8000 ? \"<S2SV_blank>(Payload<S2SV_blank>test<S2SV_blank>messages<S2SV_blank>capable)\" : \"\" <S2SV_ModEnd> ) ) ; <S2SV_ModStart> ( obj_tptr + 12 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Transmission<S2SV_blank>Rate:<S2SV_blank>%.3f<S2SV_blank>Mbps\" , <S2SV_ModEnd> bw . f <S2SV_ModStart> ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Wavelength:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr + 16 <S2SV_ModEnd> ) ) ) <S2SV_ModStart> = TRUE ; } break ; case LMP_OBJ_VERIFY_BEGIN_ACK : switch ( lmp_obj_ctype ) { case LMP_CTYPE_1 : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Dead<S2SV_blank>Interval:<S2SV_blank>%u\" \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>Transport<S2SV_blank>Response:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr ) , EXTRACT_16BITS ( obj_tptr + 2 ) ) ) ; break ; <S2SV_ModEnd> default : hexdump <S2SV_ModStart> break ; case LMP_OBJ_VERIFY_ID <S2SV_ModEnd> : switch ( <S2SV_ModStart> case LMP_CTYPE_1 : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Verify<S2SV_blank>ID:<S2SV_blank>%u\" , EXTRACT_32BITS ( obj_tptr <S2SV_ModEnd> ) ) ) <S2SV_ModStart> break ; case LMP_OBJ_CHANNEL_STATUS <S2SV_ModEnd> : switch ( <S2SV_ModStart> ) { case LMP_CTYPE_IPV4 : offset = 0 ; while ( offset + 8 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Active:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ? \"Allocated\" : \"Non-allocated\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Direction:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ? \"Transmit\" : \"Receive\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Channel<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_obj_channel_status_values , \"Unknown\" , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) ) ; offset += 8 ; } break ; case LMP_CTYPE_IPV6 : offset = 0 ; while ( offset + 20 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Active:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 16 ) >> 31 ) ? \"Allocated\" : \"Non-allocated\" , ( EXTRACT_32BITS ( obj_tptr + offset + 16 ) >> 31 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Direction:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 16 ) >> 30 ) & 0x1 ? \"Transmit\" : \"Receive\" , ( EXTRACT_32BITS ( obj_tptr + offset + 16 ) >> 30 ) & 0x1 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Channel<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_obj_channel_status_values , \"Unknown\" , EXTRACT_32BITS ( obj_tptr + offset + 16 ) & 0x3FFFFFF ) , EXTRACT_32BITS ( obj_tptr + offset + 16 ) & 0x3FFFFFF ) ) ; offset += 20 ; } break ; case LMP_CTYPE_UNMD : offset = 0 ; while ( offset + 8 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Active:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ? \"Allocated\" : \"Non-allocated\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 31 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Direction:<S2SV_blank>%s<S2SV_blank>(%u)\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ? \"Transmit\" : \"Receive\" , ( EXTRACT_32BITS ( obj_tptr + offset + 4 ) >> 30 ) & 0x1 ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Channel<S2SV_blank>Status:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_obj_channel_status_values , \"Unknown\" , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) , EXTRACT_32BITS ( obj_tptr + offset + 4 ) & 0x3FFFFFF ) ) ; offset += 8 ; } <S2SV_ModEnd> break ; default <S2SV_ModStart> break ; case LMP_OBJ_CHANNEL_STATUS_REQ <S2SV_ModEnd> : switch ( <S2SV_ModStart> ) { case LMP_CTYPE_IPV4 : offset = 0 ; while ( offset + 4 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; offset += 4 ; } break ; case LMP_CTYPE_IPV6 : offset = 0 ; while ( offset + 16 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ip6addr_string ( ndo , obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; offset += 16 ; } break ; case LMP_CTYPE_UNMD : offset = 0 ; while ( offset + 4 <= obj_tlen ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%u<S2SV_blank>(0x%08x)\" , EXTRACT_32BITS ( obj_tptr + offset ) , EXTRACT_32BITS ( obj_tptr + offset ) ) ) ; offset += 4 ; } <S2SV_ModEnd> break ; default <S2SV_ModStart> break ; case LMP_OBJ_ERROR_CODE <S2SV_ModEnd> : switch ( <S2SV_ModStart> ) { case LMP_CTYPE_BEGIN_VERIFY_ERROR : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s\" , bittok2str ( lmp_obj_begin_verify_error_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; break ; case LMP_CTYPE_LINK_SUMMARY_ERROR : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Error<S2SV_blank>Code:<S2SV_blank>%s\" , bittok2str ( lmp_obj_link_summary_error_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; break ; <S2SV_ModEnd> default : hexdump <S2SV_ModStart> break ; case LMP_OBJ_SERVICE_CONFIG <S2SV_ModEnd> : switch ( <S2SV_ModStart> ) { case LMP_CTYPE_SERVICE_CONFIG_SP : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Flags:<S2SV_blank>%s\" <S2SV_ModEnd> , bittok2str ( <S2SV_ModStart> , bittok2str ( lmp_obj_service_config_sp_flag_values <S2SV_ModEnd> , \"none\" , <S2SV_ModStart> , \"none\" , EXTRACT_8BITS ( obj_tptr ) <S2SV_ModEnd> ) ) ) <S2SV_ModStart> , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>UNI<S2SV_blank>Version:<S2SV_blank>%u\" , EXTRACT_8BITS ( obj_tptr + 1 ) <S2SV_ModEnd> ) ) ; <S2SV_ModStart> case LMP_CTYPE_SERVICE_CONFIG_CPSA : if ( obj_tlen != 16 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } link_type = EXTRACT_8BITS ( obj_tptr ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Link<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_link_type_values , \"Unknown\" , link_type ) , link_type ) ) ; switch ( link_type ) { case LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SDH : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Signal<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_signal_type_sdh_values , \"Unknown\" , EXTRACT_8BITS ( obj_tptr + 1 ) ) , EXTRACT_8BITS ( obj_tptr + 1 ) ) ) ; break ; case LMP_SD_SERVICE_CONFIG_CPSA_LINK_TYPE_SONET : ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Signal<S2SV_blank>Type:<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( lmp_sd_service_config_cpsa_signal_type_sonet_values , \"Unknown\" , EXTRACT_8BITS ( obj_tptr + 1 ) ) , EXTRACT_8BITS ( obj_tptr + 1 ) ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Transparency:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_cpsa_tp_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr + 2 ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Contiguous<S2SV_blank>Concatenation<S2SV_blank>Types:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_cpsa_cct_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr + 3 ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Minimum<S2SV_blank>NCC:<S2SV_blank>%u\" , <S2SV_ModEnd> EXTRACT_16BITS ( obj_tptr <S2SV_ModStart> EXTRACT_16BITS ( obj_tptr + 4 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Maximum<S2SV_blank>NCC:<S2SV_blank>%u\" , EXTRACT_16BITS ( obj_tptr + 6 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Minimum<S2SV_blank>NVC:%u\" , EXTRACT_16BITS ( obj_tptr + 8 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Maximum<S2SV_blank>NVC:%u\" , EXTRACT_16BITS ( obj_tptr + 10 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Local<S2SV_blank>Interface<S2SV_blank>ID:<S2SV_blank>%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , obj_tptr + 12 ) , EXTRACT_32BITS ( obj_tptr + 12 ) ) ) ; break ; case LMP_CTYPE_SERVICE_CONFIG_TRANSPARENCY_TCM : if ( obj_tlen != 8 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Transparency<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_nsa_transparency_flag_values , \"none\" , EXTRACT_32BITS ( obj_tptr ) ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>TCM<S2SV_blank>Monitoring<S2SV_blank>Flags:<S2SV_blank>%s\" , bittok2str ( lmp_obj_service_config_nsa_tcm_flag_values , \"none\" , EXTRACT_8BITS ( obj_tptr + 7 ) ) ) ) ; break ; case LMP_CTYPE_SERVICE_CONFIG_NETWORK_DIVERSITY : if ( obj_tlen != 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(not<S2SV_blank>correct<S2SV_blank>for<S2SV_blank>object)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank>Diversity:<S2SV_blank>Flags:<S2SV_blank>%s\" <S2SV_ModEnd> , bittok2str ( <S2SV_ModStart> , bittok2str ( lmp_obj_service_config_nsa_network_diversity_flag_values <S2SV_ModEnd> , \"none\" , <S2SV_ModStart> , \"none\" , EXTRACT_8BITS ( obj_tptr + 3 ) <S2SV_ModEnd> ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2669\n\n```\nCWE-189 static void findoprnd ( ITEM * ptr , int32 * pos ) <S2SV_StartBug> { <S2SV_EndBug> if ( ptr [ * pos ] . type == VAL || ptr [ * pos ] . type == VALTRUE ) { ptr [ * pos ] . left = 0 ; ( * pos ) ++ ; } else if ( ptr [ * pos ] . val == ( int32 ) '!' ) { ptr [ * pos ] . left = 1 ; ( * pos ) ++ ; findoprnd ( ptr , pos ) ; } else { ITEM * curitem = & ptr [ * pos ] ; int32 tmp = * pos ; ( * pos ) ++ ; findoprnd ( ptr , pos ) ; curitem -> left = * pos - tmp ; findoprnd ( ptr , pos ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pos ) { check_stack_depth ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7414\n\n```\nCWE-119 int phar_verify_signature ( php_stream * fp , size_t end_of_phar , php_uint32 sig_type , char * sig , int sig_len , char * fname , char * * signature , int * signature_len , char * * error ) { int read_size , len ; zend_off_t read_len ; unsigned char buf [ 1024 ] ; php_stream_rewind ( fp ) ; switch ( sig_type ) { case PHAR_SIG_OPENSSL : { # ifdef PHAR_HAVE_OPENSSL BIO * in ; EVP_PKEY * key ; EVP_MD * mdtype = ( EVP_MD * ) EVP_sha1 ( ) ; EVP_MD_CTX md_ctx ; # else int tempsig ; # endif zend_string * pubkey = NULL ; char * pfile ; php_stream * pfp ; # ifndef PHAR_HAVE_OPENSSL if ( ! zend_hash_str_exists ( & module_registry , \"openssl\" , sizeof ( \"openssl\" ) - 1 ) ) { if ( error ) { spprintf ( error , 0 , \"openssl<S2SV_blank>not<S2SV_blank>loaded\" ) ; } return FAILURE ; } # endif spprintf ( & pfile , 0 , \"%s.pubkey\" , fname ) ; pfp = php_stream_open_wrapper ( pfile , \"rb\" , 0 , NULL ) ; efree ( pfile ) ; if ( ! pfp || ! ( pubkey = php_stream_copy_to_mem ( pfp , PHP_STREAM_COPY_ALL , 0 ) ) || ! ZSTR_LEN ( pubkey ) ) { if ( pfp ) { php_stream_close ( pfp ) ; } if ( error ) { spprintf ( error , 0 , \"openssl<S2SV_blank>public<S2SV_blank>key<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>read\" ) ; } return FAILURE ; } php_stream_close ( pfp ) ; # ifndef PHAR_HAVE_OPENSSL tempsig = sig_len ; if ( FAILURE == phar_call_openssl_signverify ( 0 , fp , end_of_phar , pubkey ? ZSTR_VAL ( pubkey ) : NULL , pubkey ? ZSTR_LEN ( pubkey ) : 0 , & sig , & tempsig ) ) { if ( pubkey ) { zend_string_release ( pubkey ) ; } if ( error ) { spprintf ( error , 0 , \"openssl<S2SV_blank>signature<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>verified\" ) ; } return FAILURE ; } if ( pubkey ) { zend_string_release ( pubkey ) ; } sig_len = tempsig ; # else in = BIO_new_mem_buf ( pubkey ? ZSTR_VAL ( pubkey ) : NULL , pubkey ? ZSTR_LEN ( pubkey ) : 0 ) ; if ( NULL == in ) { zend_string_release ( pubkey ) ; if ( error ) { spprintf ( error , 0 , \"openssl<S2SV_blank>signature<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>processed\" ) ; } return FAILURE ; } key = PEM_read_bio_PUBKEY ( in , NULL , NULL , NULL ) ; BIO_free ( in ) ; zend_string_release ( pubkey ) ; if ( NULL == key ) { if ( error ) { spprintf ( error , 0 , \"openssl<S2SV_blank>signature<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>processed\" ) ; } return FAILURE ; } EVP_VerifyInit ( & md_ctx , mdtype ) ; read_len = end_of_phar ; if ( read_len > sizeof ( buf ) ) { read_size = sizeof ( buf ) ; } else { read_size = ( int ) read_len ; } php_stream_seek ( fp , 0 , SEEK_SET ) ; while ( read_size && ( len = php_stream_read ( fp , ( char * ) buf , read_size ) ) > 0 ) { EVP_VerifyUpdate ( & md_ctx , buf , len ) ; read_len -= ( zend_off_t ) len ; if ( read_len < read_size ) { read_size = ( int ) read_len ; } } if ( EVP_VerifyFinal ( & md_ctx , ( unsigned char * ) sig , sig_len , key ) != 1 ) { EVP_MD_CTX_cleanup ( & md_ctx ) ; if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>openssl<S2SV_blank>signature\" ) ; } return FAILURE ; } EVP_MD_CTX_cleanup ( & md_ctx ) ; # endif * signature_len = phar_hex_str ( ( const char * ) sig , sig_len , signature ) ; } break ; # ifdef PHAR_HASH_OK case PHAR_SIG_SHA512 : { unsigned char digest [ 64 ] ; PHP_SHA512_CTX context ; <S2SV_StartBug> PHP_SHA512Init ( & context ) ; <S2SV_EndBug> read_len = end_of_phar ; if ( read_len > sizeof ( buf ) ) { read_size = sizeof ( buf ) ; } else { read_size = ( int ) read_len ; } while ( ( len = php_stream_read ( fp , ( char * ) buf , read_size ) ) > 0 ) { PHP_SHA512Update ( & context , buf , len ) ; read_len -= ( zend_off_t ) len ; if ( read_len < read_size ) { read_size = ( int ) read_len ; } } PHP_SHA512Final ( digest , & context ) ; if ( memcmp ( digest , sig , sizeof ( digest ) ) ) { if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>signature\" ) ; } return FAILURE ; } * signature_len = phar_hex_str ( ( const char * ) digest , sizeof ( digest ) , signature ) ; break ; } case PHAR_SIG_SHA256 : { unsigned char digest [ 32 ] ; PHP_SHA256_CTX context ; <S2SV_StartBug> PHP_SHA256Init ( & context ) ; <S2SV_EndBug> read_len = end_of_phar ; if ( read_len > sizeof ( buf ) ) { read_size = sizeof ( buf ) ; } else { read_size = ( int ) read_len ; } while ( ( len = php_stream_read ( fp , ( char * ) buf , read_size ) ) > 0 ) { PHP_SHA256Update ( & context , buf , len ) ; read_len -= ( zend_off_t ) len ; if ( read_len < read_size ) { read_size = ( int ) read_len ; } } PHP_SHA256Final ( digest , & context ) ; if ( memcmp ( digest , sig , sizeof ( digest ) ) ) { if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>signature\" ) ; } return FAILURE ; } * signature_len = phar_hex_str ( ( const char * ) digest , sizeof ( digest ) , signature ) ; break ; } # else case PHAR_SIG_SHA512 : case PHAR_SIG_SHA256 : if ( error ) { spprintf ( error , 0 , \"unsupported<S2SV_blank>signature\" ) ; } return FAILURE ; # endif case PHAR_SIG_SHA1 : { unsigned char digest [ 20 ] ; PHP_SHA1_CTX context ; <S2SV_StartBug> PHP_SHA1Init ( & context ) ; <S2SV_EndBug> read_len = end_of_phar ; if ( read_len > sizeof ( buf ) ) { read_size = sizeof ( buf ) ; } else { read_size = ( int ) read_len ; } while ( ( len = php_stream_read ( fp , ( char * ) buf , read_size ) ) > 0 ) { PHP_SHA1Update ( & context , buf , len ) ; read_len -= ( zend_off_t ) len ; if ( read_len < read_size ) { read_size = ( int ) read_len ; } } PHP_SHA1Final ( digest , & context ) ; if ( memcmp ( digest , sig , sizeof ( digest ) ) ) { if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>signature\" ) ; } return FAILURE ; } * signature_len = phar_hex_str ( ( const char * ) digest , sizeof ( digest ) , signature ) ; break ; } case PHAR_SIG_MD5 : { unsigned char digest [ 16 ] ; PHP_MD5_CTX context ; <S2SV_StartBug> PHP_MD5Init ( & context ) ; <S2SV_EndBug> read_len = end_of_phar ; if ( read_len > sizeof ( buf ) ) { read_size = sizeof ( buf ) ; } else { read_size = ( int ) read_len ; } while ( ( len = php_stream_read ( fp , ( char * ) buf , read_size ) ) > 0 ) { PHP_MD5Update ( & context , buf , len ) ; read_len -= ( zend_off_t ) len ; if ( read_len < read_size ) { read_size = ( int ) read_len ; } } PHP_MD5Final ( digest , & context ) ; if ( memcmp ( digest , sig , sizeof ( digest ) ) ) { if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>signature\" ) ; } return FAILURE ; } <S2SV_StartBug> * signature_len = phar_hex_str ( ( const char * ) digest , sizeof ( digest ) , signature ) ; <S2SV_EndBug> break ; } default : if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>or<S2SV_blank>unsupported<S2SV_blank>signature\" ) ; } return FAILURE ; } return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PHP_SHA512_CTX context ; if ( sig_len < sizeof ( digest ) ) { if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>signature\" ) ; } return FAILURE ; } <S2SV_ModStart> PHP_SHA256_CTX context ; if ( sig_len < sizeof ( digest ) ) { if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>signature\" ) ; } return FAILURE ; } <S2SV_ModStart> PHP_SHA1_CTX context ; if ( sig_len < sizeof ( digest ) ) { if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>signature\" ) ; } return FAILURE ; } <S2SV_ModStart> PHP_MD5_CTX context ; if ( sig_len < sizeof ( digest <S2SV_ModEnd> ) ) { <S2SV_ModStart> FAILURE ; } PHP_MD5Init ( & context ) ; read_len = end_of_phar ; if ( read_len > sizeof ( buf ) ) { read_size = sizeof ( buf ) ; } else { read_size = ( int ) read_len ; } while ( ( len = php_stream_read ( fp , ( char * ) buf , read_size ) ) > 0 ) { PHP_MD5Update ( & context , buf , len ) ; read_len -= ( zend_off_t ) len ; if ( read_len < read_size ) { read_size = ( int ) read_len ; } } PHP_MD5Final ( digest , & context ) ; if ( memcmp ( digest , sig , sizeof ( digest ) ) ) { if ( error ) { spprintf ( error , 0 , \"broken<S2SV_blank>signature\" ) ; } return FAILURE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3136\n\n```\nCWE-000 static int mct_u232_port_probe ( struct usb_serial_port * port ) { <S2SV_StartBug> struct mct_u232_private * priv ; <S2SV_EndBug> priv = kzalloc ( sizeof ( * priv ) , GFP_KERNEL ) ; if ( ! priv ) return - ENOMEM ; <S2SV_StartBug> priv -> read_urb = port -> serial -> port [ 1 ] -> interrupt_in_urb ; <S2SV_EndBug> priv -> read_urb -> context = port ; spin_lock_init ( & priv -> lock ) ; usb_set_serial_port_data ( port , priv ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct usb_serial * serial = port -> serial ; struct <S2SV_ModStart> * priv ; if ( ! serial -> port [ 1 ] || ! serial -> port [ 1 ] -> interrupt_in_urb ) { dev_err ( & port -> dev , \"expected<S2SV_blank>endpoint<S2SV_blank>missing\\\\n\" ) ; return - ENODEV ; } <S2SV_ModStart> -> read_urb = <S2SV_ModEnd> serial -> port\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2017\n\n```\nCWE-399 static netdev_tx_t veth_xmit ( struct sk_buff * skb , struct net_device * dev ) { struct net_device * rcv = NULL ; struct veth_priv * priv , * rcv_priv ; struct veth_net_stats * stats , * rcv_stats ; int length ; priv = netdev_priv ( dev ) ; rcv = priv -> peer ; rcv_priv = netdev_priv ( rcv ) ; stats = this_cpu_ptr ( priv -> stats ) ; rcv_stats = this_cpu_ptr ( rcv_priv -> stats ) ; if ( ! ( rcv -> flags & IFF_UP ) ) goto tx_drop ; if ( dev -> features & NETIF_F_NO_CSUM ) skb -> ip_summed = rcv_priv -> ip_summed ; length = skb -> len + ETH_HLEN ; if ( dev_forward_skb ( rcv , skb ) != NET_RX_SUCCESS ) goto rx_drop ; stats -> tx_bytes += length ; stats -> tx_packets ++ ; rcv_stats -> rx_bytes += length ; rcv_stats -> rx_packets ++ ; return NETDEV_TX_OK ; tx_drop : kfree_skb ( skb ) ; stats -> tx_dropped ++ ; return NETDEV_TX_OK ; rx_drop : <S2SV_StartBug> kfree_skb ( skb ) ; <S2SV_EndBug> rcv_stats -> rx_dropped ++ ; return NETDEV_TX_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; rx_drop : <S2SV_ModEnd> rcv_stats -> rx_dropped\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10537\n\n```\nCWE-119 int ParseRiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { <S2SV_StartBug> int is_rf64 = ! strncmp ( fourcc , \"RF64\" , 4 ) , got_ds64 = 0 ; <S2SV_EndBug> int64_t total_samples = 0 , infilesize ; RiffChunkHeader riff_chunk_header ; ChunkHeader chunk_header ; WaveHeader WaveHeader ; DS64Chunk ds64_chunk ; uint32_t bcount ; CLEAR ( WaveHeader ) ; CLEAR ( ds64_chunk ) ; infilesize = DoGetFileSize ( infile ) ; if ( ! is_rf64 && infilesize >= 4294967296LL && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) ) { error_line ( \"can\\'t<S2SV_blank>handle<S2SV_blank>.WAV<S2SV_blank>files<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>4<S2SV_blank>GB<S2SV_blank>(non-standard)!\" ) ; return WAVPACK_SOFT_ERROR ; } memcpy ( & riff_chunk_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & riff_chunk_header ) + 4 , sizeof ( RiffChunkHeader ) - 4 , & bcount ) || bcount != sizeof ( RiffChunkHeader ) - 4 || strncmp ( riff_chunk_header . formType , \"WAVE\" , 4 ) ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & riff_chunk_header , sizeof ( RiffChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } while ( 1 ) { if ( ! DoReadFile ( infile , & chunk_header , sizeof ( ChunkHeader ) , & bcount ) || bcount != sizeof ( ChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & chunk_header , sizeof ( ChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & chunk_header , ChunkHeaderFormat ) ; if ( ! strncmp ( chunk_header . ckID , \"ds64\" , 4 ) ) { if ( chunk_header . ckSize < sizeof ( DS64Chunk ) || ! DoReadFile ( infile , & ds64_chunk , sizeof ( DS64Chunk ) , & bcount ) || bcount != sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & ds64_chunk , sizeof ( DS64Chunk ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } got_ds64 = 1 ; WavpackLittleEndianToNative ( & ds64_chunk , DS64ChunkFormat ) ; if ( debug_logging_mode ) error_line ( \"DS64:<S2SV_blank>riffSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>dataSize<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>sampleCount<S2SV_blank>=<S2SV_blank>%lld,<S2SV_blank>table_length<S2SV_blank>=<S2SV_blank>%d\" , ( long long ) ds64_chunk . riffSize64 , ( long long ) ds64_chunk . dataSize64 , ( long long ) ds64_chunk . sampleCount64 , ds64_chunk . tableLength ) ; if ( ds64_chunk . tableLength * sizeof ( CS64Chunk ) != chunk_header . ckSize - sizeof ( DS64Chunk ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } while ( ds64_chunk . tableLength -- ) { CS64Chunk cs64_chunk ; if ( ! DoReadFile ( infile , & cs64_chunk , sizeof ( CS64Chunk ) , & bcount ) || bcount != sizeof ( CS64Chunk ) || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & cs64_chunk , sizeof ( CS64Chunk ) ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } } } else if ( ! strncmp ( chunk_header . ckID , \"fmt<S2SV_blank>\" , 4 ) ) { <S2SV_StartBug> int supported = TRUE , format ; <S2SV_EndBug> if ( chunk_header . ckSize < 16 || chunk_header . ckSize > sizeof ( WaveHeader ) || ! DoReadFile ( infile , & WaveHeader , chunk_header . ckSize , & bcount ) || bcount != chunk_header . ckSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & WaveHeader , chunk_header . ckSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackLittleEndianToNative ( & WaveHeader , WaveHeaderFormat ) ; if ( debug_logging_mode ) { error_line ( \"format<S2SV_blank>tag<S2SV_blank>size<S2SV_blank>=<S2SV_blank>%d\" , chunk_header . ckSize ) ; error_line ( \"FormatTag<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>NumChannels<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . FormatTag , WaveHeader . NumChannels , WaveHeader . BitsPerSample ) ; error_line ( \"BlockAlign<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>SampleRate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>BytesPerSecond<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . BlockAlign , WaveHeader . SampleRate , WaveHeader . BytesPerSecond ) ; if ( chunk_header . ckSize > 16 ) error_line ( \"cbSize<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>ValidBitsPerSample<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . cbSize , WaveHeader . ValidBitsPerSample ) ; if ( chunk_header . ckSize > 20 ) error_line ( \"ChannelMask<S2SV_blank>=<S2SV_blank>%x,<S2SV_blank>SubFormat<S2SV_blank>=<S2SV_blank>%d\" , WaveHeader . ChannelMask , WaveHeader . SubFormat ) ; } if ( chunk_header . ckSize > 16 && WaveHeader . cbSize == 2 ) config -> qmode |= QMODE_ADOBE_MODE ; format = ( WaveHeader . FormatTag == 0xfffe && chunk_header . ckSize == 40 ) ? WaveHeader . SubFormat : WaveHeader . FormatTag ; config -> bits_per_sample = ( chunk_header . ckSize == 40 && WaveHeader . ValidBitsPerSample ) ? WaveHeader . ValidBitsPerSample : WaveHeader . BitsPerSample ; if ( format != 1 && format != 3 ) supported = FALSE ; if ( format == 3 && config -> bits_per_sample != 32 ) supported = FALSE ; if ( ! WaveHeader . NumChannels || WaveHeader . NumChannels > 256 || WaveHeader . BlockAlign / WaveHeader . NumChannels < ( config -> bits_per_sample + 7 ) / 8 || WaveHeader . BlockAlign / WaveHeader . NumChannels > 4 || WaveHeader . BlockAlign % WaveHeader . NumChannels ) supported = FALSE ; if ( config -> bits_per_sample < 1 || config -> bits_per_sample > 32 ) supported = FALSE ; if ( ! supported ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>an<S2SV_blank>unsupported<S2SV_blank>.WAV<S2SV_blank>format!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( chunk_header . ckSize < 40 ) { if ( ! config -> channel_mask && ! ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) { if ( WaveHeader . NumChannels <= 2 ) config -> channel_mask = 0x5 - WaveHeader . NumChannels ; else if ( WaveHeader . NumChannels <= 18 ) config -> channel_mask = ( 1 << WaveHeader . NumChannels ) - 1 ; else config -> channel_mask = 0x3ffff ; } } else if ( WaveHeader . ChannelMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>WAV<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; return WAVPACK_SOFT_ERROR ; } else if ( WaveHeader . ChannelMask ) config -> channel_mask = WaveHeader . ChannelMask ; if ( format == 3 ) config -> float_norm_exp = 127 ; else if ( ( config -> qmode & QMODE_ADOBE_MODE ) && WaveHeader . BlockAlign / WaveHeader . NumChannels == 4 ) { if ( WaveHeader . BitsPerSample == 24 ) config -> float_norm_exp = 127 + 23 ; else if ( WaveHeader . BitsPerSample == 32 ) config -> float_norm_exp = 127 + 15 ; } if ( debug_logging_mode ) { if ( config -> float_norm_exp == 127 ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>normalized<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point\" ) ; else if ( config -> float_norm_exp ) error_line ( \"data<S2SV_blank>format:<S2SV_blank>32-bit<S2SV_blank>floating<S2SV_blank>point<S2SV_blank>(Audition<S2SV_blank>%d:%d<S2SV_blank>float<S2SV_blank>type<S2SV_blank>1)\" , config -> float_norm_exp - 126 , 150 - config -> float_norm_exp ) ; else error_line ( \"data<S2SV_blank>format:<S2SV_blank>%d-bit<S2SV_blank>integers<S2SV_blank>stored<S2SV_blank>in<S2SV_blank>%d<S2SV_blank>byte(s)\" , config -> bits_per_sample , WaveHeader . BlockAlign / WaveHeader . NumChannels ) ; } } else if ( ! strncmp ( chunk_header . ckID , \"data\" , 4 ) ) { int64_t data_chunk_size = ( got_ds64 && chunk_header . ckSize == ( uint32_t ) - 1 ) ? ds64_chunk . dataSize64 : chunk_header . ckSize ; if ( ! WaveHeader . NumChannels || ( is_rf64 && ! got_ds64 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && infilesize - data_chunk_size > 16777216 ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>over<S2SV_blank>16<S2SV_blank>MB<S2SV_blank>of<S2SV_blank>extra<S2SV_blank>RIFF<S2SV_blank>data,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( config -> qmode & QMODE_IGNORE_LENGTH ) { if ( infilesize && DoGetFilePosition ( infile ) != - 1 ) total_samples = ( infilesize - DoGetFilePosition ( infile ) ) / WaveHeader . BlockAlign ; else total_samples = - 1 ; } else { total_samples = data_chunk_size / WaveHeader . BlockAlign ; if ( got_ds64 && total_samples != ds64_chunk . sampleCount64 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( ! total_samples ) { error_line ( \"this<S2SV_blank>.WAV<S2SV_blank>file<S2SV_blank>has<S2SV_blank>no<S2SV_blank>audio<S2SV_blank>samples,<S2SV_blank>probably<S2SV_blank>is<S2SV_blank>corrupt!\" ) ; return WAVPACK_SOFT_ERROR ; } if ( total_samples > MAX_WAVPACK_SAMPLES ) { error_line ( \"%s<S2SV_blank>has<S2SV_blank>too<S2SV_blank>many<S2SV_blank>samples<S2SV_blank>for<S2SV_blank>WavPack!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } } config -> bytes_per_sample = WaveHeader . BlockAlign / WaveHeader . NumChannels ; config -> num_channels = WaveHeader . NumChannels ; config -> sample_rate = WaveHeader . SampleRate ; break ; } else { int bytes_to_copy = ( chunk_header . ckSize + 1 ) & ~ 1L ; char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , chunk_header . ckID [ 0 ] , chunk_header . ckID [ 1 ] , chunk_header . ckID [ 2 ] , chunk_header . ckID [ 3 ] , chunk_header . ckSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) , got_ds64 = 0 , format_chunk <S2SV_ModStart> , format ; if ( format_chunk ++ ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.WAV<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9016\n\n```\nCWE-264 static void bt_tags_for_each ( struct blk_mq_tags * tags , struct blk_mq_bitmap_tags * bt , unsigned int off , busy_tag_iter_fn * fn , void * data , bool reserved ) { struct request * rq ; int bit , i ; if ( ! tags -> rqs ) return ; for ( i = 0 ; i < bt -> map_nr ; i ++ ) { struct blk_align_bitmap * bm = & bt -> map [ i ] ; for ( bit = find_first_bit ( & bm -> word , bm -> depth ) ; bit < bm -> depth ; bit = find_next_bit ( & bm -> word , bm -> depth , bit + 1 ) ) { <S2SV_StartBug> rq = blk_mq_tag_to_rq ( tags , off + bit ) ; <S2SV_EndBug> fn ( rq , data , reserved ) ; } off += ( 1 << bt -> bits_per_word ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { rq = tags -> rqs [ <S2SV_ModEnd> off + bit <S2SV_ModStart> off + bit ] <S2SV_ModEnd> ; fn (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 static int setupLookaside ( sqlite3 * db , void * pBuf , int sz , int cnt ) { # ifndef SQLITE_OMIT_LOOKASIDE void * pStart ; if ( sqlite3LookasideUsed ( db , 0 ) > 0 ) { return SQLITE_BUSY ; } if ( db -> lookaside . bMalloced ) { sqlite3_free ( db -> lookaside . pStart ) ; } sz = ROUNDDOWN8 ( sz ) ; if ( sz <= ( int ) sizeof ( LookasideSlot * ) ) sz = 0 ; if ( cnt < 0 ) cnt = 0 ; if ( sz == 0 || cnt == 0 ) { sz = 0 ; pStart = 0 ; } else if ( pBuf == 0 ) { sqlite3BeginBenignMalloc ( ) ; <S2SV_StartBug> pStart = sqlite3Malloc ( sz * cnt ) ; <S2SV_EndBug> sqlite3EndBenignMalloc ( ) ; if ( pStart ) cnt = sqlite3MallocSize ( pStart ) / sz ; } else { pStart = pBuf ; } db -> lookaside . pStart = pStart ; db -> lookaside . pInit = 0 ; db -> lookaside . pFree = 0 ; db -> lookaside . sz = ( u16 ) sz ; if ( pStart ) { int i ; LookasideSlot * p ; assert ( sz > ( int ) sizeof ( LookasideSlot * ) ) ; db -> lookaside . nSlot = cnt ; p = ( LookasideSlot * ) pStart ; for ( i = cnt - 1 ; i >= 0 ; i -- ) { p -> pNext = db -> lookaside . pInit ; db -> lookaside . pInit = p ; p = ( LookasideSlot * ) & ( ( u8 * ) p ) [ sz ] ; } db -> lookaside . pEnd = p ; db -> lookaside . bDisable = 0 ; db -> lookaside . bMalloced = pBuf == 0 ? 1 : 0 ; } else { db -> lookaside . pStart = db ; db -> lookaside . pEnd = db ; db -> lookaside . bDisable = 1 ; db -> lookaside . bMalloced = 0 ; db -> lookaside . nSlot = 0 ; } # endif return SQLITE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sz * ( sqlite3_int64 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7487\n\n```\nCWE-416 static int ipxitf_ioctl ( unsigned int cmd , void __user * arg ) { int rc = - EINVAL ; struct ifreq ifr ; int val ; switch ( cmd ) { case SIOCSIFADDR : { struct sockaddr_ipx * sipx ; struct ipx_interface_definition f ; rc = - EFAULT ; if ( copy_from_user ( & ifr , arg , sizeof ( ifr ) ) ) break ; sipx = ( struct sockaddr_ipx * ) & ifr . ifr_addr ; rc = - EINVAL ; if ( sipx -> sipx_family != AF_IPX ) break ; f . ipx_network = sipx -> sipx_network ; memcpy ( f . ipx_device , ifr . ifr_name , sizeof ( f . ipx_device ) ) ; memcpy ( f . ipx_node , sipx -> sipx_node , IPX_NODE_LEN ) ; f . ipx_dlink_type = sipx -> sipx_type ; f . ipx_special = sipx -> sipx_special ; if ( sipx -> sipx_action == IPX_DLTITF ) rc = ipxitf_delete ( & f ) ; else rc = ipxitf_create ( & f ) ; break ; } case SIOCGIFADDR : { struct sockaddr_ipx * sipx ; struct ipx_interface * ipxif ; struct net_device * dev ; rc = - EFAULT ; if ( copy_from_user ( & ifr , arg , sizeof ( ifr ) ) ) break ; sipx = ( struct sockaddr_ipx * ) & ifr . ifr_addr ; dev = __dev_get_by_name ( & init_net , ifr . ifr_name ) ; rc = - ENODEV ; if ( ! dev ) break ; ipxif = ipxitf_find_using_phys ( dev , ipx_map_frame_type ( sipx -> sipx_type ) ) ; rc = - EADDRNOTAVAIL ; if ( ! ipxif ) break ; sipx -> sipx_family = AF_IPX ; sipx -> sipx_network = ipxif -> if_netnum ; memcpy ( sipx -> sipx_node , ipxif -> if_node , sizeof ( sipx -> sipx_node ) ) ; <S2SV_StartBug> rc = - EFAULT ; <S2SV_EndBug> <S2SV_StartBug> if ( copy_to_user ( arg , & ifr , sizeof ( ifr ) ) ) <S2SV_EndBug> break ; <S2SV_StartBug> ipxitf_put ( ipxif ) ; <S2SV_EndBug> rc = 0 ; break ; } case SIOCAIPXITFCRT : rc = - EFAULT ; if ( get_user ( val , ( unsigned char __user * ) arg ) ) break ; rc = 0 ; ipxcfg_auto_create_interfaces = val ; break ; case SIOCAIPXPRISLT : rc = - EFAULT ; if ( get_user ( val , ( unsigned char __user * ) arg ) ) break ; rc = 0 ; ipxcfg_set_auto_select ( val ) ; break ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; rc = 0 ; if ( copy_to_user ( arg , & ifr , sizeof ( ifr ) ) ) rc = <S2SV_ModStart> - EFAULT ; <S2SV_ModEnd> ipxitf_put ( ipxif <S2SV_ModStart> ( ipxif ) <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17853\n\n```\nCWE-119 static int adjust_scalar_min_max_vals ( struct bpf_verifier_env * env , struct bpf_insn * insn , struct bpf_reg_state * dst_reg , struct bpf_reg_state src_reg ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; bool src_known , dst_known ; s64 smin_val , smax_val ; u64 umin_val , umax_val ; if ( BPF_CLASS ( insn -> code ) != BPF_ALU64 ) { coerce_reg_to_32 ( dst_reg ) ; coerce_reg_to_32 ( & src_reg ) ; } smin_val = src_reg . smin_value ; smax_val = src_reg . smax_value ; umin_val = src_reg . umin_value ; umax_val = src_reg . umax_value ; src_known = tnum_is_const ( src_reg . var_off ) ; dst_known = tnum_is_const ( dst_reg -> var_off ) ; switch ( opcode ) { case BPF_ADD : if ( signed_add_overflows ( dst_reg -> smin_value , smin_val ) || signed_add_overflows ( dst_reg -> smax_value , smax_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value += smin_val ; dst_reg -> smax_value += smax_val ; } if ( dst_reg -> umin_value + umin_val < umin_val || dst_reg -> umax_value + umax_val < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value += umin_val ; dst_reg -> umax_value += umax_val ; } dst_reg -> var_off = tnum_add ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_SUB : if ( signed_sub_overflows ( dst_reg -> smin_value , smax_val ) || signed_sub_overflows ( dst_reg -> smax_value , smin_val ) ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value -= smax_val ; dst_reg -> smax_value -= smin_val ; } if ( dst_reg -> umin_value < umax_val ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value -= umax_val ; dst_reg -> umax_value -= umin_val ; } dst_reg -> var_off = tnum_sub ( dst_reg -> var_off , src_reg . var_off ) ; break ; case BPF_MUL : dst_reg -> var_off = tnum_mul ( dst_reg -> var_off , src_reg . var_off ) ; if ( smin_val < 0 || dst_reg -> smin_value < 0 ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } if ( umax_val > U32_MAX || dst_reg -> umax_value > U32_MAX ) { __mark_reg_unbounded ( dst_reg ) ; __update_reg_bounds ( dst_reg ) ; break ; } dst_reg -> umin_value *= umin_val ; dst_reg -> umax_value *= umax_val ; if ( dst_reg -> umax_value > S64_MAX ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } break ; case BPF_AND : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value & src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_and ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = dst_reg -> var_off . value ; dst_reg -> umax_value = min ( dst_reg -> umax_value , umax_val ) ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_OR : if ( src_known && dst_known ) { __mark_reg_known ( dst_reg , dst_reg -> var_off . value | src_reg . var_off . value ) ; break ; } dst_reg -> var_off = tnum_or ( dst_reg -> var_off , src_reg . var_off ) ; dst_reg -> umin_value = max ( dst_reg -> umin_value , umin_val ) ; dst_reg -> umax_value = dst_reg -> var_off . value | dst_reg -> var_off . mask ; if ( dst_reg -> smin_value < 0 || smin_val < 0 ) { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; } else { dst_reg -> smin_value = dst_reg -> umin_value ; dst_reg -> smax_value = dst_reg -> umax_value ; } __update_reg_bounds ( dst_reg ) ; break ; case BPF_LSH : if ( umax_val > 63 ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; if ( dst_reg -> umax_value > 1ULL << ( 63 - umax_val ) ) { dst_reg -> umin_value = 0 ; dst_reg -> umax_value = U64_MAX ; } else { dst_reg -> umin_value <<= umin_val ; dst_reg -> umax_value <<= umax_val ; } if ( src_known ) dst_reg -> var_off = tnum_lshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_lshift ( tnum_unknown , umin_val ) ; __update_reg_bounds ( dst_reg ) ; break ; case BPF_RSH : if ( umax_val > 63 ) { mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } <S2SV_StartBug> if ( dst_reg -> smin_value < 0 ) { <S2SV_EndBug> if ( umin_val ) { dst_reg -> smin_value = 0 ; } else { dst_reg -> smin_value = S64_MIN ; dst_reg -> smax_value = S64_MAX ; <S2SV_StartBug> } <S2SV_EndBug> } else { dst_reg -> smin_value = ( u64 ) ( dst_reg -> smin_value ) >> umax_val ; } if ( src_known ) dst_reg -> var_off = tnum_rshift ( dst_reg -> var_off , umin_val ) ; else dst_reg -> var_off = tnum_rshift ( tnum_unknown , umin_val ) ; dst_reg -> umin_value >>= umax_val ; dst_reg -> umax_value >>= umin_val ; __update_reg_bounds ( dst_reg ) ; break ; default : mark_reg_unknown ( env , regs , insn -> dst_reg ) ; break ; } __reg_deduce_bounds ( dst_reg ) ; __reg_bound_offset ( dst_reg ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> break ; } <S2SV_ModEnd> dst_reg -> smin_value <S2SV_ModStart> = S64_MAX ; <S2SV_ModEnd> if ( src_known\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13054\n\n```\nCWE-125 static int lldp_private_8023_print ( netdissect_options * ndo , const u_char * tptr , u_int tlv_len ) { int subtype , hexdump = FALSE ; if ( tlv_len < 4 ) { return hexdump ; } subtype = * ( tptr + 3 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Subtype<S2SV_blank>(%u)\" , tok2str ( lldp_8023_subtype_values , \"unknown\" , subtype ) , subtype ) ) ; switch ( subtype ) { case LLDP_PRIVATE_8023_SUBTYPE_MACPHY : if ( tlv_len < 9 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>autonegotiation<S2SV_blank>[%s]<S2SV_blank>(0x%02x)\" , bittok2str ( lldp_8023_autonegotiation_values , \"none\" , * ( tptr + 4 ) ) , * ( tptr + 4 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>PMD<S2SV_blank>autoneg<S2SV_blank>capability<S2SV_blank>[%s]<S2SV_blank>(0x%04x)\" , bittok2str ( lldp_pmd_capability_values , \"unknown\" , EXTRACT_16BITS ( tptr + 5 ) ) , EXTRACT_16BITS ( tptr + 5 ) ) ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MAU<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>(0x%04x)\" , tok2str ( lldp_mau_types_values , \"unknown\" , EXTRACT_16BITS ( tptr + 7 ) ) , EXTRACT_16BITS ( tptr + 7 ) ) ) ; break ; case LLDP_PRIVATE_8023_SUBTYPE_MDIPOWER : if ( tlv_len < 7 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MDI<S2SV_blank>power<S2SV_blank>support<S2SV_blank>[%s],<S2SV_blank>power<S2SV_blank>pair<S2SV_blank>%s,<S2SV_blank>power<S2SV_blank>class<S2SV_blank>%s\" , bittok2str ( lldp_mdi_values , \"none\" , * ( tptr + 4 ) ) , tok2str ( lldp_mdi_power_pairs_values , \"unknown\" , * ( tptr + 5 ) ) , tok2str ( lldp_mdi_power_class_values , \"unknown\" , * ( tptr + 6 ) ) ) ) ; break ; case LLDP_PRIVATE_8023_SUBTYPE_LINKAGGR : if ( tlv_len < 9 ) { return hexdump ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>aggregation<S2SV_blank>status<S2SV_blank>[%s],<S2SV_blank>aggregation<S2SV_blank>port<S2SV_blank>ID<S2SV_blank>%u\" , bittok2str ( lldp_aggregation_values , \"none\" , * ( tptr + 4 ) ) , EXTRACT_32BITS ( tptr + 5 ) ) ) ; break ; case LLDP_PRIVATE_8023_SUBTYPE_MTU : <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>MTU<S2SV_blank>size<S2SV_blank>%u\" , EXTRACT_16BITS ( tptr + 4 ) ) ) ; <S2SV_EndBug> break ; default : hexdump = TRUE ; break ; } return hexdump ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case LLDP_PRIVATE_8023_SUBTYPE_MTU : if ( tlv_len < 6 ) { return hexdump ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10154\n\n```\nCWE-119 static int smbhash ( unsigned char * out , const unsigned char * in , unsigned char * key ) { <S2SV_StartBug> int rc ; <S2SV_EndBug> unsigned char key2 [ 8 ] ; <S2SV_StartBug> struct crypto_skcipher * tfm_des ; <S2SV_EndBug> struct scatterlist sgin , sgout ; struct skcipher_request * req ; str_to_key ( key , key2 ) ; <S2SV_StartBug> tfm_des = crypto_alloc_skcipher ( \"ecb(des)\" , 0 , CRYPTO_ALG_ASYNC ) ; <S2SV_EndBug> if ( IS_ERR ( tfm_des ) ) { <S2SV_StartBug> rc = PTR_ERR ( tfm_des ) ; <S2SV_EndBug> cifs_dbg ( VFS , \"could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>des<S2SV_blank>crypto<S2SV_blank>API\\\\n\" ) ; <S2SV_StartBug> goto smbhash_err ; <S2SV_EndBug> } req = skcipher_request_alloc ( tfm_des , GFP_KERNEL ) ; if ( ! req ) { rc = - ENOMEM ; cifs_dbg ( VFS , \"could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>des<S2SV_blank>crypto<S2SV_blank>API\\\\n\" ) ; goto smbhash_free_skcipher ; } crypto_skcipher_setkey ( tfm_des , key2 , 8 ) ; <S2SV_StartBug> sg_init_one ( & sgin , in , 8 ) ; <S2SV_EndBug> sg_init_one ( & sgout , out , 8 ) ; skcipher_request_set_callback ( req , 0 , NULL , NULL ) ; skcipher_request_set_crypt ( req , & sgin , & sgout , 8 , NULL ) ; rc = crypto_skcipher_encrypt ( req ) ; if ( rc ) cifs_dbg ( VFS , \"could<S2SV_blank>not<S2SV_blank>encrypt<S2SV_blank>crypt<S2SV_blank>key<S2SV_blank>rc:<S2SV_blank>%d\\\\n\" , rc ) ; skcipher_request_free ( req ) ; smbhash_free_skcipher : crypto_free_skcipher ( tfm_des ) ; <S2SV_StartBug> smbhash_err : <S2SV_EndBug> return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> key ) { <S2SV_ModEnd> unsigned char key2 <S2SV_ModStart> ] ; struct crypto_cipher * tfm_des <S2SV_ModEnd> ; str_to_key ( <S2SV_ModStart> ; tfm_des = crypto_alloc_cipher ( \"des\" <S2SV_ModEnd> , 0 , <S2SV_ModStart> , 0 , 0 <S2SV_ModEnd> ) ; if <S2SV_ModStart> ) ) { <S2SV_ModEnd> cifs_dbg ( VFS <S2SV_ModStart> \"could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>des<S2SV_blank>crypto<S2SV_blank>API\\\\n\" ) ; return PTR_ERR ( tfm_des ) ; } crypto_cipher_setkey <S2SV_ModEnd> ( tfm_des , <S2SV_ModStart> 8 ) ; crypto_cipher_encrypt_one ( tfm_des , out , in ) ; crypto_free_cipher <S2SV_ModEnd> ( tfm_des ) <S2SV_ModStart> tfm_des ) ; return 0 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7018\n\n```\nCWE-119 static int decode_cblk ( Jpeg2000DecoderContext * s , Jpeg2000CodingStyle * codsty , Jpeg2000T1Context * t1 , Jpeg2000Cblk * cblk , int width , int height , int bandpos ) { int passno = cblk -> npasses , pass_t = 2 , bpno = cblk -> nonzerobits - 1 , y ; int clnpass_cnt = 0 ; int bpass_csty_symbol = codsty -> cblk_style & JPEG2000_CBLK_BYPASS ; <S2SV_StartBug> int vert_causal_ctx_csty_symbol = codsty -> cblk_style & JPEG2000_CBLK_VSC ; <S2SV_EndBug> for ( y = 0 ; y < height ; y ++ ) memset ( t1 -> data [ y ] , 0 , width * sizeof ( * * t1 -> data ) ) ; if ( ! cblk -> length ) return 0 ; for ( y = 0 ; y < height + 2 ; y ++ ) memset ( t1 -> flags [ y ] , 0 , ( width + 2 ) * sizeof ( * * t1 -> flags ) ) ; cblk -> data [ cblk -> length ] = 0xff ; cblk -> data [ cblk -> length + 1 ] = 0xff ; ff_mqc_initdec ( & t1 -> mqc , cblk -> data ) ; while ( passno -- ) { switch ( pass_t ) { case 0 : decode_sigpass ( t1 , width , height , bpno + 1 , bandpos , bpass_csty_symbol && ( clnpass_cnt >= 4 ) , vert_causal_ctx_csty_symbol ) ; break ; case 1 : decode_refpass ( t1 , width , height , bpno + 1 ) ; if ( bpass_csty_symbol && clnpass_cnt >= 4 ) ff_mqc_initdec ( & t1 -> mqc , cblk -> data ) ; break ; case 2 : decode_clnpass ( s , t1 , width , height , bpno + 1 , bandpos , codsty -> cblk_style & JPEG2000_CBLK_SEGSYM , vert_causal_ctx_csty_symbol ) ; clnpass_cnt = clnpass_cnt + 1 ; if ( bpass_csty_symbol && clnpass_cnt >= 4 ) ff_mqc_initdec ( & t1 -> mqc , cblk -> data ) ; break ; } pass_t ++ ; if ( pass_t == 3 ) { bpno -- ; pass_t = 0 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cblk_style & JPEG2000_CBLK_VSC ; av_assert0 ( width <= JPEG2000_MAX_CBLKW ) ; av_assert0 ( height <= JPEG2000_MAX_CBLKH )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13217\n\n```\nCWE-119 static __forceinline void draw_line ( float * output , int x0 , int y0 , int x1 , int y1 , int n ) { int dy = y1 - y0 ; int adx = x1 - x0 ; int ady = abs ( dy ) ; int base ; int x = x0 , y = y0 ; int err = 0 ; int sy ; # ifdef STB_VORBIS_DIVIDE_TABLE if ( adx < DIVTAB_DENOM && ady < DIVTAB_NUMER ) { if ( dy < 0 ) { base = - integer_divide_table [ ady ] [ adx ] ; sy = base - 1 ; } else { base = integer_divide_table [ ady ] [ adx ] ; sy = base + 1 ; } } else { base = dy / adx ; if ( dy < 0 ) sy = base - 1 ; else sy = base + 1 ; } # else base = dy / adx ; if ( dy < 0 ) sy = base - 1 ; else sy = base + 1 ; # endif ady -= abs ( base ) * adx ; if ( x1 > n ) x1 = n ; if ( x < x1 ) { <S2SV_StartBug> LINE_OP ( output [ x ] , inverse_db_table [ y ] ) ; <S2SV_EndBug> for ( ++ x ; x < x1 ; ++ x ) { err += ady ; if ( err >= adx ) { err -= adx ; y += sy ; } else y += base ; <S2SV_StartBug> LINE_OP ( output [ x ] , inverse_db_table [ y ] ) ; <S2SV_EndBug> } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inverse_db_table [ y & 255 <S2SV_ModStart> inverse_db_table [ y & 255\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-1010294\n\n```\nCWE-189 static struct mobj * alloc_ta_mem ( size_t size ) { # ifdef CFG_PAGED_USER_TA return mobj_paged_alloc ( size ) ; # else struct mobj * mobj = mobj_mm_alloc ( mobj_sec_ddr , size , & tee_mm_sec_ddr ) ; <S2SV_StartBug> if ( mobj ) <S2SV_EndBug> <S2SV_StartBug> memset ( mobj_get_va ( mobj , 0 ) , 0 , size ) ; <S2SV_EndBug> return mobj ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( mobj ) { size_t granularity = BIT ( tee_mm_sec_ddr . shift ) ; <S2SV_ModStart> , 0 , ROUNDUP ( size , granularity ) ) ; } <S2SV_ModEnd> return mobj ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10210\n\n```\nCWE-476 int read_escaped_char ( yyscan_t yyscanner , uint8_t * escaped_char ) { char text [ 4 ] = { 0 , 0 , 0 , 0 } ; text [ 0 ] = '\\\\\\\\' ; text [ 1 ] = RE_YY_INPUT ( yyscanner ) ; <S2SV_StartBug> if ( text [ 1 ] == EOF ) <S2SV_EndBug> return 0 ; if ( text [ 1 ] == 'x' ) { text [ 2 ] = RE_YY_INPUT ( yyscanner ) ; <S2SV_StartBug> if ( text [ 2 ] == EOF ) <S2SV_EndBug> return 0 ; text [ 3 ] = RE_YY_INPUT ( yyscanner ) ; <S2SV_StartBug> if ( text [ 3 ] == EOF ) <S2SV_EndBug> return 0 ; } * escaped_char = escaped_char_value ( text ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] == EOF || text [ 1 ] == 0 <S2SV_ModStart> ; if ( ! isxdigit ( <S2SV_ModStart> [ 2 ] ) <S2SV_ModEnd> ) return 0 <S2SV_ModStart> ; if ( ! isxdigit ( <S2SV_ModStart> [ 3 ] ) <S2SV_ModEnd> ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9229\n\n```\nCWE-476 static int forward_search_range ( regex_t * reg , const UChar * str , const UChar * end , UChar * s , UChar * range , UChar * * low , UChar * * high , UChar * * low_prev ) { UChar * p , * pprev = ( UChar * ) NULL ; # ifdef ONIG_DEBUG_SEARCH fprintf ( stderr , \"forward_search_range:<S2SV_blank>str:<S2SV_blank>%d,<S2SV_blank>end:<S2SV_blank>%d,<S2SV_blank>s:<S2SV_blank>%d,<S2SV_blank>range:<S2SV_blank>%d\\\\n\" , ( int ) str , ( int ) end , ( int ) s , ( int ) range ) ; # endif p = s ; if ( reg -> dmin > 0 ) { if ( ONIGENC_IS_SINGLEBYTE ( reg -> enc ) ) { p += reg -> dmin ; } else { UChar * q = p + reg -> dmin ; if ( q >= end ) return 0 ; while ( p < q ) p += enclen ( reg -> enc , p ) ; } } retry : switch ( reg -> optimize ) { case ONIG_OPTIMIZE_EXACT : p = slow_search ( reg -> enc , reg -> exact , reg -> exact_end , p , end , range ) ; break ; case ONIG_OPTIMIZE_EXACT_IC : p = slow_search_ic ( reg -> enc , reg -> case_fold_flag , reg -> exact , reg -> exact_end , p , end , range ) ; break ; case ONIG_OPTIMIZE_EXACT_BM : p = bm_search ( reg , reg -> exact , reg -> exact_end , p , end , range ) ; break ; case ONIG_OPTIMIZE_EXACT_BM_NOT_REV : p = bm_search_notrev ( reg , reg -> exact , reg -> exact_end , p , end , range ) ; break ; case ONIG_OPTIMIZE_MAP : p = map_search ( reg -> enc , reg -> map , p , range ) ; break ; } if ( p && p < range ) { if ( p - reg -> dmin < s ) { retry_gate : pprev = p ; p += enclen ( reg -> enc , p ) ; goto retry ; } if ( reg -> sub_anchor ) { UChar * prev ; switch ( reg -> sub_anchor ) { case ANCHOR_BEGIN_LINE : if ( ! ON_STR_BEGIN ( p ) ) { prev = onigenc_get_prev_char_head ( reg -> enc , ( pprev ? pprev : str ) , p ) ; if ( ! ONIGENC_IS_MBC_NEWLINE ( reg -> enc , prev , end ) ) goto retry_gate ; } break ; case ANCHOR_END_LINE : if ( ON_STR_END ( p ) ) { # ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE prev = ( UChar * ) onigenc_get_prev_char_head ( reg -> enc , ( pprev ? pprev : str ) , p ) ; if ( prev && ONIGENC_IS_MBC_NEWLINE ( reg -> enc , prev , end ) ) goto retry_gate ; # endif } else if ( ! ONIGENC_IS_MBC_NEWLINE ( reg -> enc , p , end ) # ifdef USE_CRNL_AS_LINE_TERMINATOR && ! ONIGENC_IS_MBC_CRNL ( reg -> enc , p , end ) # endif ) goto retry_gate ; break ; } } if ( reg -> dmax == 0 ) { * low = p ; if ( low_prev ) { if ( * low > s ) * low_prev = onigenc_get_prev_char_head ( reg -> enc , s , p ) ; else * low_prev = onigenc_get_prev_char_head ( reg -> enc , ( pprev ? pprev : str ) , p ) ; } } else { if ( reg -> dmax != ONIG_INFINITE_DISTANCE ) { <S2SV_StartBug> * low = p - reg -> dmax ; <S2SV_EndBug> if ( * low > s ) { * low = onigenc_get_right_adjust_char_head_with_prev ( reg -> enc , s , * low , ( const UChar * * ) low_prev ) ; if ( low_prev && IS_NULL ( * low_prev ) ) * low_prev = onigenc_get_prev_char_head ( reg -> enc , ( pprev ? pprev : s ) , * low ) ; } else { if ( low_prev ) * low_prev = onigenc_get_prev_char_head ( reg -> enc , <S2SV_StartBug> ( pprev ? pprev : str ) , * low ) ; <S2SV_EndBug> } } } * high = p - reg -> dmin ; # ifdef ONIG_DEBUG_SEARCH fprintf ( stderr , \"forward_search_range<S2SV_blank>success:<S2SV_blank>low:<S2SV_blank>%d,<S2SV_blank>high:<S2SV_blank>%d,<S2SV_blank>dmin:<S2SV_blank>%d,<S2SV_blank>dmax:<S2SV_blank>%d\\\\n\" , ( int ) ( * low - str ) , ( int ) ( * high - str ) , reg -> dmin , reg -> dmax ) ; # endif return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ONIG_INFINITE_DISTANCE ) { if ( p - str < reg -> dmax ) { * low = ( UChar * ) str ; if ( low_prev ) * low_prev = onigenc_get_prev_char_head ( reg -> enc , str , * low ) ; } else { <S2SV_ModStart> low ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1959\n\n```\nCWE-264 static ssize_t map_write ( struct file * file , const char __user * buf , size_t count , loff_t * ppos , int cap_setid , struct uid_gid_map * map , struct uid_gid_map * parent_map ) { struct seq_file * seq = file -> private_data ; struct user_namespace * ns = seq -> private ; struct uid_gid_map new_map ; unsigned idx ; struct uid_gid_extent * extent = NULL ; unsigned long page = 0 ; char * kbuf , * pos , * next_line ; ssize_t ret = - EINVAL ; mutex_lock ( & id_map_mutex ) ; ret = - EPERM ; if ( map -> nr_extents != 0 ) goto out ; if ( cap_valid ( cap_setid ) && ! ns_capable ( ns , cap_setid ) ) goto out ; ret = - ENOMEM ; page = __get_free_page ( GFP_TEMPORARY ) ; kbuf = ( char * ) page ; if ( ! page ) goto out ; ret = - EINVAL ; if ( ( * ppos != 0 ) || ( count >= PAGE_SIZE ) ) goto out ; ret = - EFAULT ; if ( copy_from_user ( kbuf , buf , count ) ) goto out ; kbuf [ count ] = '\\\\0' ; ret = - EINVAL ; pos = kbuf ; new_map . nr_extents = 0 ; for ( ; pos ; pos = next_line ) { extent = & new_map . extent [ new_map . nr_extents ] ; next_line = strchr ( pos , '\\\\n' ) ; if ( next_line ) { * next_line = '\\\\0' ; next_line ++ ; if ( * next_line == '\\\\0' ) next_line = NULL ; } pos = skip_spaces ( pos ) ; extent -> first = simple_strtoul ( pos , & pos , 10 ) ; if ( ! isspace ( * pos ) ) goto out ; pos = skip_spaces ( pos ) ; extent -> lower_first = simple_strtoul ( pos , & pos , 10 ) ; if ( ! isspace ( * pos ) ) goto out ; pos = skip_spaces ( pos ) ; extent -> count = simple_strtoul ( pos , & pos , 10 ) ; if ( * pos && ! isspace ( * pos ) ) goto out ; pos = skip_spaces ( pos ) ; if ( * pos != '\\\\0' ) goto out ; if ( ( extent -> first == ( u32 ) - 1 ) || ( extent -> lower_first == ( u32 ) - 1 ) ) goto out ; if ( ( extent -> first + extent -> count ) <= extent -> first ) goto out ; if ( ( extent -> lower_first + extent -> count ) <= extent -> lower_first ) goto out ; if ( mappings_overlap ( & new_map , extent ) ) goto out ; new_map . nr_extents ++ ; if ( ( new_map . nr_extents == UID_GID_MAP_MAX_EXTENTS ) && ( next_line != NULL ) ) goto out ; } if ( new_map . nr_extents == 0 ) goto out ; ret = - EPERM ; <S2SV_StartBug> if ( ! new_idmap_permitted ( ns , cap_setid , & new_map ) ) <S2SV_EndBug> goto out ; for ( idx = 0 ; idx < new_map . nr_extents ; idx ++ ) { u32 lower_first ; extent = & new_map . extent [ idx ] ; lower_first = map_id_range_down ( parent_map , extent -> lower_first , extent -> count ) ; if ( lower_first == ( u32 ) - 1 ) goto out ; extent -> lower_first = lower_first ; } memcpy ( map -> extent , new_map . extent , new_map . nr_extents * sizeof ( new_map . extent [ 0 ] ) ) ; smp_wmb ( ) ; map -> nr_extents = new_map . nr_extents ; * ppos = count ; ret = count ; out : mutex_unlock ( & id_map_mutex ) ; if ( page ) free_page ( page ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! new_idmap_permitted ( file ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18609\n\n```\nCWE-190 int amqp_handle_input ( amqp_connection_state_t state , amqp_bytes_t received_data , amqp_frame_t * decoded_frame ) { size_t bytes_consumed ; void * raw_frame ; decoded_frame -> frame_type = 0 ; if ( received_data . len == 0 ) { return AMQP_STATUS_OK ; } if ( state -> state == CONNECTION_STATE_IDLE ) { state -> state = CONNECTION_STATE_HEADER ; } bytes_consumed = consume_data ( state , & received_data ) ; if ( state -> inbound_offset < state -> target_size ) { return ( int ) bytes_consumed ; } raw_frame = state -> inbound_buffer . bytes ; switch ( state -> state ) { case CONNECTION_STATE_INITIAL : if ( memcmp ( raw_frame , \"AMQP\" , 4 ) == 0 ) { decoded_frame -> frame_type = AMQP_PSEUDOFRAME_PROTOCOL_HEADER ; decoded_frame -> channel = 0 ; decoded_frame -> payload . protocol_header . transport_high = amqp_d8 ( amqp_offset ( raw_frame , 4 ) ) ; decoded_frame -> payload . protocol_header . transport_low = amqp_d8 ( amqp_offset ( raw_frame , 5 ) ) ; decoded_frame -> payload . protocol_header . protocol_version_major = amqp_d8 ( amqp_offset ( raw_frame , 6 ) ) ; decoded_frame -> payload . protocol_header . protocol_version_minor = amqp_d8 ( amqp_offset ( raw_frame , 7 ) ) ; return_to_idle ( state ) ; return ( int ) bytes_consumed ; } case CONNECTION_STATE_HEADER : { amqp_channel_t channel ; amqp_pool_t * channel_pool ; <S2SV_StartBug> channel = amqp_d16 ( amqp_offset ( raw_frame , 1 ) ) ; <S2SV_EndBug> <S2SV_StartBug> state -> target_size = <S2SV_EndBug> <S2SV_StartBug> amqp_d32 ( amqp_offset ( raw_frame , 3 ) ) + HEADER_SIZE + FOOTER_SIZE ; <S2SV_EndBug> if ( ( size_t ) state -> frame_max < state -> target_size ) { return AMQP_STATUS_BAD_AMQP_DATA ; } channel_pool = amqp_get_or_create_channel_pool ( state , channel ) ; if ( NULL == channel_pool ) { return AMQP_STATUS_NO_MEMORY ; } amqp_pool_alloc_bytes ( channel_pool , state -> target_size , & state -> inbound_buffer ) ; if ( NULL == state -> inbound_buffer . bytes ) { return AMQP_STATUS_NO_MEMORY ; } memcpy ( state -> inbound_buffer . bytes , state -> header_buffer , HEADER_SIZE ) ; raw_frame = state -> inbound_buffer . bytes ; state -> state = CONNECTION_STATE_BODY ; bytes_consumed += consume_data ( state , & received_data ) ; if ( state -> inbound_offset < state -> target_size ) { return ( int ) bytes_consumed ; } } case CONNECTION_STATE_BODY : { amqp_bytes_t encoded ; int res ; amqp_pool_t * channel_pool ; if ( amqp_d8 ( amqp_offset ( raw_frame , state -> target_size - 1 ) ) != AMQP_FRAME_END ) { return AMQP_STATUS_BAD_AMQP_DATA ; } decoded_frame -> frame_type = amqp_d8 ( amqp_offset ( raw_frame , 0 ) ) ; decoded_frame -> channel = amqp_d16 ( amqp_offset ( raw_frame , 1 ) ) ; channel_pool = amqp_get_or_create_channel_pool ( state , decoded_frame -> channel ) ; if ( NULL == channel_pool ) { return AMQP_STATUS_NO_MEMORY ; } switch ( decoded_frame -> frame_type ) { case AMQP_FRAME_METHOD : decoded_frame -> payload . method . id = amqp_d32 ( amqp_offset ( raw_frame , HEADER_SIZE ) ) ; encoded . bytes = amqp_offset ( raw_frame , HEADER_SIZE + 4 ) ; encoded . len = state -> target_size - HEADER_SIZE - 4 - FOOTER_SIZE ; res = amqp_decode_method ( decoded_frame -> payload . method . id , channel_pool , encoded , & decoded_frame -> payload . method . decoded ) ; if ( res < 0 ) { return res ; } break ; case AMQP_FRAME_HEADER : decoded_frame -> payload . properties . class_id = amqp_d16 ( amqp_offset ( raw_frame , HEADER_SIZE ) ) ; decoded_frame -> payload . properties . body_size = amqp_d64 ( amqp_offset ( raw_frame , HEADER_SIZE + 4 ) ) ; encoded . bytes = amqp_offset ( raw_frame , HEADER_SIZE + 12 ) ; encoded . len = state -> target_size - HEADER_SIZE - 12 - FOOTER_SIZE ; decoded_frame -> payload . properties . raw = encoded ; res = amqp_decode_properties ( decoded_frame -> payload . properties . class_id , channel_pool , encoded , & decoded_frame -> payload . properties . decoded ) ; if ( res < 0 ) { return res ; } break ; case AMQP_FRAME_BODY : decoded_frame -> payload . body_fragment . len = state -> target_size - HEADER_SIZE - FOOTER_SIZE ; decoded_frame -> payload . body_fragment . bytes = amqp_offset ( raw_frame , HEADER_SIZE ) ; break ; case AMQP_FRAME_HEARTBEAT : break ; default : decoded_frame -> frame_type = 0 ; break ; } return_to_idle ( state ) ; return ( int ) bytes_consumed ; } default : amqp_abort ( \"Internal<S2SV_blank>error:<S2SV_blank>invalid<S2SV_blank>amqp_connection_state_t->state<S2SV_blank>%d\" , state -> state ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * channel_pool ; uint32_t frame_size ; <S2SV_ModStart> ) ) ; frame_size = amqp_d32 ( amqp_offset ( raw_frame , 3 ) ) ; if ( frame_size >= INT32_MAX ) { return AMQP_STATUS_BAD_AMQP_DATA ; } <S2SV_ModStart> -> target_size = frame_size <S2SV_ModEnd> + HEADER_SIZE +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6310\n\n```\nCWE-125 static void file_add_mapi_attrs ( File * file , MAPI_Attr * * attrs ) { int i ; for ( i = 0 ; attrs [ i ] ; i ++ ) { MAPI_Attr * a = attrs [ i ] ; if ( a -> num_values ) { switch ( a -> name ) { case MAPI_ATTACH_LONG_FILENAME : <S2SV_StartBug> if ( file -> name ) XFREE ( file -> name ) ; <S2SV_EndBug> file -> name = strdup ( ( char * ) a -> values [ 0 ] . data . buf ) ; break ; case MAPI_ATTACH_DATA_OBJ : <S2SV_StartBug> file -> len = a -> values [ 0 ] . len ; <S2SV_EndBug> if ( file -> data ) XFREE ( file -> data ) ; file -> data = CHECKED_XMALLOC ( unsigned char , file -> len ) ; memmove ( file -> data , a -> values [ 0 ] . data . buf , file -> len ) ; break ; case MAPI_ATTACH_MIME_TAG : <S2SV_StartBug> if ( file -> mime_type ) XFREE ( file -> mime_type ) ; <S2SV_EndBug> file -> mime_type = CHECKED_XMALLOC ( char , a -> values [ 0 ] . len ) ; memmove ( file -> mime_type , a -> values [ 0 ] . data . buf , a -> values [ 0 ] . len ) ; break ; case MAPI_ATTACH_CONTENT_ID : <S2SV_StartBug> if ( file -> content_id ) XFREE ( file -> content_id ) ; <S2SV_EndBug> file -> content_id = CHECKED_XMALLOC ( char , a -> values [ 0 ] . len ) ; memmove ( file -> content_id , a -> values [ 0 ] . data . buf , a -> values [ 0 ] . len ) ; break ; default : break ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case MAPI_ATTACH_LONG_FILENAME : assert ( a -> type == szMAPI_STRING ) ; <S2SV_ModStart> case MAPI_ATTACH_DATA_OBJ : assert ( ( a -> type == szMAPI_BINARY ) || ( a -> type == szMAPI_OBJECT ) ) ; <S2SV_ModStart> case MAPI_ATTACH_MIME_TAG : assert ( a -> type == szMAPI_STRING ) ; <S2SV_ModStart> case MAPI_ATTACH_CONTENT_ID : assert ( a -> type == szMAPI_STRING ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15862\n\n```\nCWE-476 static bool LookupModMask ( struct xkb_context * ctx , const void * priv , xkb_atom_t field , enum expr_value_type type , xkb_mod_mask_t * val_rtrn ) { const char * str ; xkb_mod_index_t ndx ; const LookupModMaskPriv * arg = priv ; const struct xkb_mod_set * mods = arg -> mods ; enum mod_type mod_type = arg -> mod_type ; if ( type != EXPR_TYPE_INT ) return false ; str = xkb_atom_text ( ctx , field ) ; <S2SV_StartBug> if ( istreq ( str , \"all\" ) ) { <S2SV_EndBug> * val_rtrn = MOD_REAL_MASK_ALL ; return true ; } if ( istreq ( str , \"none\" ) ) { * val_rtrn = 0 ; return true ; } ndx = XkbModNameToIndex ( mods , field , mod_type ) ; if ( ndx == XKB_MOD_INVALID ) return false ; * val_rtrn = ( 1u << ndx ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! str ) return false ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-770(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13190\n\n```\nCWE-770 WORD32 ihevcd_create ( iv_obj_t * ps_codec_obj , void * pv_api_ip , void * pv_api_op ) { <S2SV_StartBug> ihevcd_cxa_create_op_t * ps_create_op ; <S2SV_EndBug> WORD32 ret ; codec_t * ps_codec ; <S2SV_StartBug> ps_create_op = ( ihevcd_cxa_create_op_t * ) pv_api_op ; <S2SV_EndBug> ps_create_op -> s_ivd_create_op_t . u4_error_code = 0 ; <S2SV_StartBug> ret = ihevcd_allocate_static_bufs ( & ps_codec_obj , pv_api_ip , pv_api_op ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( IV_FAIL == ret ) && ( NULL != ps_codec_obj ) ) <S2SV_EndBug> { <S2SV_StartBug> ihevcd_free_static_bufs ( ps_codec_obj ) ; <S2SV_EndBug> ps_create_op -> s_ivd_create_op_t . u4_error_code = IVD_MEM_ALLOC_FAILED ; ps_create_op -> s_ivd_create_op_t . u4_error_code = 1 << IVD_FATALERROR ; return IV_FAIL ; } ps_codec = ( codec_t * ) ps_codec_obj -> pv_codec_handle ; ret = ihevcd_init ( ps_codec ) ; TRACE_INIT ( NULL ) ; STATS_INIT ( ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pv_api_op ) { ihevcd_cxa_create_ip_t * ps_create_ip ; <S2SV_ModStart> * ps_codec ; ps_create_ip = ( ihevcd_cxa_create_ip_t * ) pv_api_ip ; <S2SV_ModStart> = 0 ; ps_codec_obj = NULL ; <S2SV_ModStart> ) ; if <S2SV_ModEnd> ( IV_FAIL == <S2SV_ModStart> == ret ) { if <S2SV_ModEnd> ( NULL != <S2SV_ModStart> != ps_codec_obj ) { if ( ps_codec_obj -> pv_codec_handle <S2SV_ModStart> ps_codec_obj ) ; } else { void ( * pf_aligned_free ) ( void * pv_mem_ctxt , void * pv_buf ) ; void * pv_mem_ctxt ; pf_aligned_free = ps_create_ip -> s_ivd_create_ip_t . pf_aligned_free ; pv_mem_ctxt = ps_create_ip -> s_ivd_create_ip_t . pv_mem_ctxt ; pf_aligned_free ( pv_mem_ctxt , ps_codec_obj ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5357\n\n```\nCWE-20 static gboolean netscreen_seek_read ( wtap * wth , gint64 seek_off , struct wtap_pkthdr * phdr , Buffer * buf , int * err , gchar * * err_info ) { <S2SV_StartBug> int pkt_len ; <S2SV_EndBug> <S2SV_StartBug> char line [ NETSCREEN_LINE_LENGTH ] ; <S2SV_EndBug> char cap_int [ NETSCREEN_MAX_INT_NAME_LENGTH ] ; gboolean cap_dir ; char cap_dst [ 13 ] ; if ( file_seek ( wth -> random_fh , seek_off , SEEK_SET , err ) == - 1 ) { return FALSE ; } if ( file_gets ( line , NETSCREEN_LINE_LENGTH , wth -> random_fh ) == NULL ) { * err = file_error ( wth -> random_fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } <S2SV_StartBug> pkt_len = parse_netscreen_rec_hdr ( phdr , line , cap_int , & cap_dir , <S2SV_EndBug> cap_dst , err , err_info ) ; <S2SV_StartBug> if ( pkt_len == - 1 ) <S2SV_EndBug> return FALSE ; if ( ! parse_netscreen_hex_dump ( wth -> random_fh , pkt_len , cap_int , cap_dst , phdr , buf , err , err_info ) ) return FALSE ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err_info ) { <S2SV_ModEnd> char line [ <S2SV_ModStart> line [ NETSCREEN_LINE_LENGTH <S2SV_ModEnd> ] ; if <S2SV_ModStart> FALSE ; } return parse_netscreen_packet ( wth -> random_fh , phdr , buf <S2SV_ModEnd> , line , <S2SV_ModStart> , line , <S2SV_ModEnd> err , err_info <S2SV_ModStart> err_info ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6308\n\n```\nCWE-190 void * checked_xcalloc ( size_t num , size_t size ) { <S2SV_StartBug> alloc_limit_assert ( \"checked_xcalloc\" , ( num * size ) ) ; <S2SV_EndBug> return xcalloc ( num , size ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) { size_t res ; if ( check_mul_overflow ( num , size , & res ) ) abort ( ) ; <S2SV_ModStart> \"checked_xcalloc\" , ( res <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16391\n\n```\nCWE-119 static int read_public_key ( RSA * rsa ) { int r ; sc_path_t path ; sc_file_t * file ; u8 buf [ 2048 ] , * p = buf ; size_t bufsize , keysize ; r = select_app_df ( ) ; if ( r ) return 1 ; sc_format_path ( \"I1012\" , & path ) ; r = sc_select_file ( card , & path , & file ) ; if ( r ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>select<S2SV_blank>public<S2SV_blank>key<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , sc_strerror ( r ) ) ; return 2 ; } <S2SV_StartBug> bufsize = file -> size ; <S2SV_EndBug> sc_file_free ( file ) ; r = sc_read_binary ( card , 0 , buf , bufsize , 0 ) ; if ( r < 0 ) { fprintf ( stderr , \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>public<S2SV_blank>key<S2SV_blank>file:<S2SV_blank>%s\\\\n\" , sc_strerror ( r ) ) ; return 2 ; } bufsize = r ; do { if ( bufsize < 4 ) return 3 ; keysize = ( p [ 0 ] << 8 ) | p [ 1 ] ; if ( keysize == 0 ) break ; if ( keysize < 3 ) return 3 ; if ( p [ 2 ] == opt_key_num ) break ; p += keysize ; bufsize -= keysize ; } while ( 1 ) ; if ( keysize == 0 ) { printf ( \"Key<S2SV_blank>number<S2SV_blank>%d<S2SV_blank>not<S2SV_blank>found.\\\\n\" , opt_key_num ) ; return 2 ; } return parse_public_key ( p , keysize , rsa ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } bufsize = MIN ( <S2SV_ModStart> file -> size , sizeof buf )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-399 static int simulate_llsc ( struct pt_regs * regs , unsigned int opcode ) { if ( ( opcode & OPCODE ) == LL ) { perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> return simulate_ll ( regs , opcode ) ; } if ( ( opcode & OPCODE ) == SC ) { perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , <S2SV_StartBug> 1 , 0 , regs , 0 ) ; <S2SV_EndBug> return simulate_sc ( regs , opcode ) ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_EMULATION_FAULTS , 1 <S2SV_ModEnd> , regs , <S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-863(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18955\n\n```\nCWE-863 static ssize_t map_write ( struct file * file , const char __user * buf , size_t count , loff_t * ppos , int cap_setid , struct uid_gid_map * map , struct uid_gid_map * parent_map ) { struct seq_file * seq = file -> private_data ; struct user_namespace * ns = seq -> private ; struct uid_gid_map new_map ; unsigned idx ; struct uid_gid_extent extent ; char * kbuf = NULL , * pos , * next_line ; ssize_t ret ; if ( ( * ppos != 0 ) || ( count >= PAGE_SIZE ) ) return - EINVAL ; kbuf = memdup_user_nul ( buf , count ) ; if ( IS_ERR ( kbuf ) ) return PTR_ERR ( kbuf ) ; mutex_lock ( & userns_state_mutex ) ; memset ( & new_map , 0 , sizeof ( struct uid_gid_map ) ) ; ret = - EPERM ; if ( map -> nr_extents != 0 ) goto out ; if ( cap_valid ( cap_setid ) && ! file_ns_capable ( file , ns , CAP_SYS_ADMIN ) ) goto out ; ret = - EINVAL ; pos = kbuf ; for ( ; pos ; pos = next_line ) { next_line = strchr ( pos , '\\\\n' ) ; if ( next_line ) { * next_line = '\\\\0' ; next_line ++ ; if ( * next_line == '\\\\0' ) next_line = NULL ; } pos = skip_spaces ( pos ) ; extent . first = simple_strtoul ( pos , & pos , 10 ) ; if ( ! isspace ( * pos ) ) goto out ; pos = skip_spaces ( pos ) ; extent . lower_first = simple_strtoul ( pos , & pos , 10 ) ; if ( ! isspace ( * pos ) ) goto out ; pos = skip_spaces ( pos ) ; extent . count = simple_strtoul ( pos , & pos , 10 ) ; if ( * pos && ! isspace ( * pos ) ) goto out ; pos = skip_spaces ( pos ) ; if ( * pos != '\\\\0' ) goto out ; if ( ( extent . first == ( u32 ) - 1 ) || ( extent . lower_first == ( u32 ) - 1 ) ) goto out ; if ( ( extent . first + extent . count ) <= extent . first ) goto out ; if ( ( extent . lower_first + extent . count ) <= extent . lower_first ) goto out ; if ( mappings_overlap ( & new_map , & extent ) ) goto out ; if ( ( new_map . nr_extents + 1 ) == UID_GID_MAP_MAX_EXTENTS && ( next_line != NULL ) ) goto out ; ret = insert_extent ( & new_map , & extent ) ; if ( ret < 0 ) goto out ; ret = - EINVAL ; } if ( new_map . nr_extents == 0 ) goto out ; ret = - EPERM ; <S2SV_StartBug> if ( ! new_idmap_permitted ( file , ns , cap_setid , & new_map ) ) <S2SV_EndBug> goto out ; ret = sort_idmaps ( & new_map ) ; if ( ret < 0 ) goto out ; ret = - EPERM ; for ( idx = 0 ; idx < new_map . nr_extents ; idx ++ ) { struct uid_gid_extent * e ; u32 lower_first ; if ( new_map . nr_extents <= UID_GID_MAP_MAX_BASE_EXTENTS ) e = & new_map . extent [ idx ] ; else e = & new_map . forward [ idx ] ; lower_first = map_id_range_down ( parent_map , e -> lower_first , e -> count ) ; if ( lower_first == ( u32 ) - 1 ) goto out ; e -> lower_first = lower_first ; } <S2SV_StartBug> if ( new_map . nr_extents <= UID_GID_MAP_MAX_BASE_EXTENTS ) { <S2SV_EndBug> memcpy ( map -> extent , new_map . extent , new_map . nr_extents * sizeof ( new_map . extent [ 0 ] ) ) ; } else { map -> forward = new_map . forward ; map -> reverse = new_map . reverse ; } smp_wmb ( ) ; map -> nr_extents = new_map . nr_extents ; * ppos = count ; ret = count ; out : if ( ret < 0 && new_map . nr_extents > UID_GID_MAP_MAX_BASE_EXTENTS ) { kfree ( new_map . forward ) ; kfree ( new_map . reverse ) ; map -> forward = NULL ; map -> reverse = NULL ; map -> nr_extents = 0 ; } mutex_unlock ( & userns_state_mutex ) ; kfree ( kbuf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & new_map ) <S2SV_ModEnd> ) goto out <S2SV_ModStart> lower_first ; } ret = sort_idmaps ( & new_map ) ; if ( ret < 0 ) goto out ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7009\n\n```\nCWE-119 static void rpza_decode_stream ( RpzaContext * s ) { int width = s -> avctx -> width ; int stride = s -> frame . linesize [ 0 ] / 2 ; int row_inc = stride - 4 ; int stream_ptr = 0 ; int chunk_size ; unsigned char opcode ; int n_blocks ; unsigned short colorA = 0 , colorB ; unsigned short color4 [ 4 ] ; unsigned char index , idx ; unsigned short ta , tb ; unsigned short * pixels = ( unsigned short * ) s -> frame . data [ 0 ] ; int row_ptr = 0 ; <S2SV_StartBug> int pixel_ptr = 0 ; <S2SV_EndBug> int block_ptr ; int pixel_x , pixel_y ; int total_blocks ; if ( s -> buf [ stream_ptr ] != 0xe1 ) av_log ( s -> avctx , AV_LOG_ERROR , \"First<S2SV_blank>chunk<S2SV_blank>byte<S2SV_blank>is<S2SV_blank>0x%02x<S2SV_blank>instead<S2SV_blank>of<S2SV_blank>0xe1\\\\n\" , s -> buf [ stream_ptr ] ) ; chunk_size = AV_RB32 ( & s -> buf [ stream_ptr ] ) & 0x00FFFFFF ; stream_ptr += 4 ; if ( chunk_size != s -> size ) av_log ( s -> avctx , AV_LOG_ERROR , \"MOV<S2SV_blank>chunk<S2SV_blank>size<S2SV_blank>!=<S2SV_blank>encoded<S2SV_blank>chunk<S2SV_blank>size;<S2SV_blank>using<S2SV_blank>MOV<S2SV_blank>chunk<S2SV_blank>size\\\\n\" ) ; chunk_size = s -> size ; total_blocks = ( ( s -> avctx -> width + 3 ) / 4 ) * ( ( s -> avctx -> height + 3 ) / 4 ) ; while ( stream_ptr < chunk_size ) { opcode = s -> buf [ stream_ptr ++ ] ; n_blocks = ( opcode & 0x1f ) + 1 ; if ( ( opcode & 0x80 ) == 0 ) { colorA = ( opcode << 8 ) | ( s -> buf [ stream_ptr ++ ] ) ; opcode = 0 ; if ( ( s -> buf [ stream_ptr ] & 0x80 ) != 0 ) { opcode = 0x20 ; n_blocks = 1 ; } } switch ( opcode & 0xe0 ) { case 0x80 : while ( n_blocks -- ) { ADVANCE_BLOCK ( ) ; } break ; case 0xa0 : colorA = AV_RB16 ( & s -> buf [ stream_ptr ] ) ; stream_ptr += 2 ; while ( n_blocks -- ) { <S2SV_StartBug> block_ptr = row_ptr + pixel_ptr ; <S2SV_EndBug> for ( pixel_y = 0 ; pixel_y < 4 ; pixel_y ++ ) { for ( pixel_x = 0 ; pixel_x < 4 ; pixel_x ++ ) { pixels [ block_ptr ] = colorA ; block_ptr ++ ; } block_ptr += row_inc ; } <S2SV_StartBug> ADVANCE_BLOCK ( ) ; <S2SV_EndBug> } break ; case 0xc0 : colorA = AV_RB16 ( & s -> buf [ stream_ptr ] ) ; stream_ptr += 2 ; case 0x20 : colorB = AV_RB16 ( & s -> buf [ stream_ptr ] ) ; stream_ptr += 2 ; color4 [ 0 ] = colorB ; color4 [ 1 ] = 0 ; color4 [ 2 ] = 0 ; color4 [ 3 ] = colorA ; ta = ( colorA >> 10 ) & 0x1F ; tb = ( colorB >> 10 ) & 0x1F ; color4 [ 1 ] |= ( ( 11 * ta + 21 * tb ) >> 5 ) << 10 ; color4 [ 2 ] |= ( ( 21 * ta + 11 * tb ) >> 5 ) << 10 ; ta = ( colorA >> 5 ) & 0x1F ; tb = ( colorB >> 5 ) & 0x1F ; color4 [ 1 ] |= ( ( 11 * ta + 21 * tb ) >> 5 ) << 5 ; color4 [ 2 ] |= ( ( 21 * ta + 11 * tb ) >> 5 ) << 5 ; ta = colorA & 0x1F ; tb = colorB & 0x1F ; color4 [ 1 ] |= ( ( 11 * ta + 21 * tb ) >> 5 ) ; color4 [ 2 ] |= ( ( 21 * ta + 11 * tb ) >> 5 ) ; if ( s -> size - stream_ptr < n_blocks * 4 ) return ; while ( n_blocks -- ) { <S2SV_StartBug> block_ptr = row_ptr + pixel_ptr ; <S2SV_EndBug> for ( pixel_y = 0 ; pixel_y < 4 ; pixel_y ++ ) { index = s -> buf [ stream_ptr ++ ] ; for ( pixel_x = 0 ; pixel_x < 4 ; pixel_x ++ ) { idx = ( index >> ( 2 * ( 3 - pixel_x ) ) ) & 0x03 ; pixels [ block_ptr ] = color4 [ idx ] ; block_ptr ++ ; } block_ptr += row_inc ; } <S2SV_StartBug> ADVANCE_BLOCK ( ) ; <S2SV_EndBug> } break ; case 0x00 : if ( s -> size - stream_ptr < 16 ) return ; <S2SV_StartBug> block_ptr = row_ptr + pixel_ptr ; <S2SV_EndBug> for ( pixel_y = 0 ; pixel_y < 4 ; pixel_y ++ ) { for ( pixel_x = 0 ; pixel_x < 4 ; pixel_x ++ ) { if ( ( pixel_y != 0 ) || ( pixel_x != 0 ) ) { colorA = AV_RB16 ( & s -> buf [ stream_ptr ] ) ; stream_ptr += 2 ; } pixels [ block_ptr ] = colorA ; block_ptr ++ ; } block_ptr += row_inc ; } <S2SV_StartBug> ADVANCE_BLOCK ( ) ; <S2SV_EndBug> break ; default : av_log ( s -> avctx , AV_LOG_ERROR , \"Unknown<S2SV_blank>opcode<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>rpza<S2SV_blank>chunk.\" \"<S2SV_blank>Skip<S2SV_blank>remaining<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>chunk<S2SV_blank>data.\\\\n\" , opcode , chunk_size - stream_ptr ) ; return ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int pixel_ptr = - 4 <S2SV_ModEnd> ; int block_ptr <S2SV_ModStart> -- ) { ADVANCE_BLOCK ( ) <S2SV_ModStart> row_inc ; } <S2SV_ModEnd> } break ; <S2SV_ModStart> -- ) { ADVANCE_BLOCK ( ) ; <S2SV_ModStart> row_inc ; } <S2SV_ModEnd> } break ; <S2SV_ModStart> ) return ; ADVANCE_BLOCK ( ) ; <S2SV_ModStart> row_inc ; } <S2SV_ModEnd> break ; default\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7017\n\n```\nCWE-000 void ff_jpeg2000_cleanup ( Jpeg2000Component * comp , Jpeg2000CodingStyle * codsty ) { int reslevelno , bandno , precno ; for ( reslevelno = 0 ; comp -> reslevel && reslevelno < codsty -> nreslevels ; reslevelno ++ ) { Jpeg2000ResLevel * reslevel = comp -> reslevel + reslevelno ; for ( bandno = 0 ; bandno < reslevel -> nbands ; bandno ++ ) { Jpeg2000Band * band = reslevel -> band + bandno ; for ( precno = 0 ; precno < reslevel -> num_precincts_x * reslevel -> num_precincts_y ; precno ++ ) { <S2SV_StartBug> Jpeg2000Prec * prec = band -> prec + precno ; <S2SV_EndBug> av_freep ( & prec -> zerobits ) ; av_freep ( & prec -> cblkincl ) ; av_freep ( & prec -> cblk ) ; } <S2SV_StartBug> av_freep ( & band -> prec ) ; <S2SV_EndBug> } av_freep ( & reslevel -> band ) ; } ff_dwt_destroy ( & comp -> dwt ) ; av_freep ( & comp -> reslevel ) ; av_freep ( & comp -> i_data ) ; av_freep ( & comp -> f_data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { if ( band -> prec ) { <S2SV_ModStart> ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11592\n\n```\nCWE-125 void lcdSetPixels_ArrayBuffer_flat ( JsGraphics * gfx , short x , short y , short pixelCount , unsigned int col ) { unsigned char * ptr = ( unsigned char * ) gfx -> backendData ; unsigned int idx = lcdGetPixelIndex_ArrayBuffer ( gfx , x , y , pixelCount ) ; ptr += idx >> 3 ; unsigned int whiteMask = ( 1U << gfx -> data . bpp ) - 1 ; bool shortCut = ( col == 0 || ( col & whiteMask ) == whiteMask ) && ( ! ( gfx -> data . flags & JSGRAPHICSFLAGS_ARRAYBUFFER_VERTICAL_BYTE ) ) ; while ( pixelCount -- ) { if ( gfx -> data . bpp & 7 ) { idx = idx & 7 ; if ( shortCut && idx == 0 ) { int wholeBytes = ( gfx -> data . bpp * ( pixelCount + 1 ) ) >> 3 ; if ( wholeBytes ) { char c = ( char ) ( col ? 0xFF : 0 ) ; pixelCount = ( short ) ( pixelCount + 1 - ( wholeBytes * 8 / gfx -> data . bpp ) ) ; while ( wholeBytes -- ) { * ptr = c ; ptr ++ ; } continue ; } } unsigned int mask = ( unsigned int ) ( 1 << gfx -> data . bpp ) - 1 ; unsigned int existing = ( unsigned int ) * ptr ; unsigned int bitIdx = ( gfx -> data . flags & JSGRAPHICSFLAGS_ARRAYBUFFER_MSB ) ? 8 - ( idx + gfx -> data . bpp ) : idx ; <S2SV_StartBug> * ptr = ( char ) ( ( existing & ~ ( mask << bitIdx ) ) | ( ( col & mask ) << bitIdx ) ) ; <S2SV_EndBug> if ( gfx -> data . flags & JSGRAPHICSFLAGS_ARRAYBUFFER_VERTICAL_BYTE ) { ptr ++ ; } else { idx += gfx -> data . bpp ; if ( idx >= 8 ) ptr ++ ; } } else { int i ; for ( i = 0 ; i < gfx -> data . bpp ; i += 8 ) { * ptr = ( char ) ( col >> i ) ; ptr ++ ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> : idx ; assert ( ptr >= gfx -> backendData && ptr < ( ( char * ) gfx -> backendData + graphicsGetMemoryRequired ( gfx ) ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-27138\n\n```\nCWE-000 int fit_check_format ( const void * fit , ulong size ) { int ret ; ret = fdt_check_header ( fit ) ; if ( ret ) { log_debug ( \"Wrong<S2SV_blank>FIT<S2SV_blank>format:<S2SV_blank>not<S2SV_blank>a<S2SV_blank>flattened<S2SV_blank>device<S2SV_blank>tree<S2SV_blank>(err=%d)\\\\n\" , ret ) ; return - ENOEXEC ; } if ( CONFIG_IS_ENABLED ( FIT_FULL_CHECK ) ) { if ( size == IMAGE_SIZE_INVAL ) size = fdt_totalsize ( fit ) ; ret = fdt_check_full ( fit , size ) ; <S2SV_StartBug> if ( ret ) { <S2SV_EndBug> log_debug ( \"FIT<S2SV_blank>check<S2SV_blank>error<S2SV_blank>%d\\\\n\" , ret ) ; <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> } } if ( ! fdt_getprop ( fit , 0 , FIT_DESC_PROP , NULL ) ) { log_debug ( \"Wrong<S2SV_blank>FIT<S2SV_blank>format:<S2SV_blank>no<S2SV_blank>description\\\\n\" ) ; return - ENOMSG ; } if ( IMAGE_ENABLE_TIMESTAMP ) { if ( ! fdt_getprop ( fit , 0 , FIT_TIMESTAMP_PROP , NULL ) ) { log_debug ( \"Wrong<S2SV_blank>FIT<S2SV_blank>format:<S2SV_blank>no<S2SV_blank>timestamp\\\\n\" ) ; return - ENODATA ; } } if ( fdt_path_offset ( fit , FIT_IMAGES_PATH ) < 0 ) { log_debug ( \"Wrong<S2SV_blank>FIT<S2SV_blank>format:<S2SV_blank>no<S2SV_blank>images<S2SV_blank>parent<S2SV_blank>node\\\\n\" ) ; return - ENOENT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ret ) ret = - EINVAL ; if ( ! ret && CONFIG_IS_ENABLED ( FIT_SIGNATURE ) ) { ret = fdt_check_no_at ( fit , 0 ) ; if ( ret ) <S2SV_ModStart> ) ; return ret ; } } if ( ret ) { log_debug ( \"FIT<S2SV_blank>check<S2SV_blank>error<S2SV_blank>%d\\\\n\" , ret ) ; return ret <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9203\n\n```\nCWE-787 static int bmpr_read_rle ( struct iwbmprcontext * rctx ) { int retval = 0 ; if ( ! ( rctx -> compression == IWBMP_BI_RLE8 && rctx -> bitcount == 8 ) && ! ( rctx -> compression == IWBMP_BI_RLE4 && rctx -> bitcount == 4 ) ) { iw_set_error ( rctx -> ctx , \"Compression<S2SV_blank>type<S2SV_blank>incompatible<S2SV_blank>with<S2SV_blank>image<S2SV_blank>type\" ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( rctx -> topdown ) { <S2SV_StartBug> iw_set_error ( rctx -> ctx , \"Compression<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>with<S2SV_blank>top-down<S2SV_blank>images\" ) ; <S2SV_EndBug> } rctx -> img -> imgtype = IW_IMGTYPE_RGBA ; rctx -> img -> bit_depth = 8 ; rctx -> img -> bpr = iw_calc_bytesperrow ( rctx -> width , 32 ) ; rctx -> img -> pixels = ( iw_byte * ) iw_malloc_large ( rctx -> ctx , rctx -> img -> bpr , rctx -> img -> height ) ; if ( ! rctx -> img -> pixels ) goto done ; if ( ! bmpr_read_rle_internal ( rctx ) ) goto done ; if ( ! bmpr_has_transparency ( rctx -> img ) ) { bmpr_strip_alpha ( rctx -> img ) ; } retval = 1 ; done : return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Compression<S2SV_blank>type<S2SV_blank>incompatible<S2SV_blank>with<S2SV_blank>image<S2SV_blank>type\" ) ; goto done ; <S2SV_ModStart> , \"Compression<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>with<S2SV_blank>top-down<S2SV_blank>images\" ) ; goto done\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-0530\n\n```\nCWE-119 int mainloop ( CLIENT * client ) { struct nbd_request request ; struct nbd_reply reply ; gboolean go_on = TRUE ; # ifdef DODBG int i = 0 ; # endif negotiate ( client -> net , client , NULL ) ; DEBUG ( \"Entering<S2SV_blank>request<S2SV_blank>loop!\\\\n\" ) ; reply . magic = htonl ( NBD_REPLY_MAGIC ) ; reply . error = 0 ; while ( go_on ) { char buf [ BUFSIZE ] ; size_t len ; # ifdef DODBG i ++ ; printf ( \"%d:<S2SV_blank>\" , i ) ; # endif readit ( client -> net , & request , sizeof ( request ) ) ; request . from = ntohll ( request . from ) ; request . type = ntohl ( request . type ) ; if ( request . type == NBD_CMD_DISC ) { msg2 ( LOG_INFO , \"Disconnect<S2SV_blank>request<S2SV_blank>received.\" ) ; if ( client -> server -> flags & F_COPYONWRITE ) { if ( client -> difmap ) g_free ( client -> difmap ) ; close ( client -> difffile ) ; unlink ( client -> difffilename ) ; free ( client -> difffilename ) ; } go_on = FALSE ; continue ; } len = ntohl ( request . len ) ; if ( request . magic != htonl ( NBD_REQUEST_MAGIC ) ) err ( \"Not<S2SV_blank>enough<S2SV_blank>magic.\" ) ; <S2SV_StartBug> if ( len > BUFSIZE + sizeof ( struct nbd_reply ) ) <S2SV_EndBug> err ( \"Request<S2SV_blank>too<S2SV_blank>big!\" ) ; # ifdef DODBG printf ( \"%s<S2SV_blank>from<S2SV_blank>%llu<S2SV_blank>(%llu)<S2SV_blank>len<S2SV_blank>%d,<S2SV_blank>\" , request . type ? \"WRITE\" : \"READ\" , ( unsigned long long ) request . from , ( unsigned long long ) request . from / 512 , len ) ; # endif memcpy ( reply . handle , request . handle , sizeof ( reply . handle ) ) ; if ( ( request . from + len ) > ( OFFT_MAX ) ) { DEBUG ( \"[Number<S2SV_blank>too<S2SV_blank>large!]\" ) ; ERROR ( client , reply , EINVAL ) ; continue ; } if ( ( ( ssize_t ) ( ( off_t ) request . from + len ) > client -> exportsize ) ) { DEBUG ( \"[RANGE!]\" ) ; ERROR ( client , reply , EINVAL ) ; continue ; } if ( request . type == NBD_CMD_WRITE ) { DEBUG ( \"wr:<S2SV_blank>net->buf,<S2SV_blank>\" ) ; readit ( client -> net , buf , len ) ; DEBUG ( \"buf->exp,<S2SV_blank>\" ) ; if ( ( client -> server -> flags & F_READONLY ) || ( client -> server -> flags & F_AUTOREADONLY ) ) { DEBUG ( \"[WRITE<S2SV_blank>to<S2SV_blank>READONLY!]\" ) ; ERROR ( client , reply , EPERM ) ; continue ; } if ( expwrite ( request . from , buf , len , client ) ) { DEBUG ( \"Write<S2SV_blank>failed:<S2SV_blank>%m\" ) ; ERROR ( client , reply , errno ) ; continue ; } SEND ( client -> net , reply ) ; DEBUG ( \"OK!\\\\n\" ) ; continue ; } DEBUG ( \"exp->buf,<S2SV_blank>\" ) ; if ( expread ( request . from , buf + sizeof ( struct nbd_reply ) , len , client ) ) { DEBUG ( \"Read<S2SV_blank>failed:<S2SV_blank>%m\" ) ; ERROR ( client , reply , errno ) ; continue ; } DEBUG ( \"buf->net,<S2SV_blank>\" ) ; memcpy ( buf , & reply , sizeof ( struct nbd_reply ) ) ; writeit ( client -> net , buf , len + sizeof ( struct nbd_reply ) ) ; DEBUG ( \"OK!\\\\n\" ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len > BUFSIZE - <S2SV_ModEnd> sizeof ( struct\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3229\n\n```\nCWE-200 static int iucv_sock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct iucv_sock * iucv = iucv_sk ( sk ) ; unsigned int copied , rlen ; struct sk_buff * skb , * rskb , * cskb ; <S2SV_StartBug> int err = 0 ; <S2SV_EndBug> if ( ( sk -> sk_state == IUCV_DISCONN ) && skb_queue_empty ( & iucv -> backlog_skb_q ) && skb_queue_empty ( & sk -> sk_receive_queue ) && list_empty ( & iucv -> message_q . list ) ) return 0 ; if ( flags & ( MSG_OOB ) ) return - EOPNOTSUPP ; skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) { if ( sk -> sk_shutdown & RCV_SHUTDOWN ) return 0 ; return err ; } rlen = skb -> len ; copied = min_t ( unsigned int , rlen , len ) ; if ( ! rlen ) sk -> sk_shutdown = sk -> sk_shutdown | RCV_SHUTDOWN ; cskb = skb ; if ( skb_copy_datagram_iovec ( cskb , 0 , msg -> msg_iov , copied ) ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return - EFAULT ; } if ( sk -> sk_type == SOCK_SEQPACKET ) { if ( copied < rlen ) msg -> msg_flags |= MSG_TRUNC ; msg -> msg_flags |= MSG_EOR ; } err = put_cmsg ( msg , SOL_IUCV , SCM_IUCV_TRGCLS , CB_TRGCLS_LEN , CB_TRGCLS ( skb ) ) ; if ( err ) { if ( ! ( flags & MSG_PEEK ) ) skb_queue_head ( & sk -> sk_receive_queue , skb ) ; return err ; } if ( ! ( flags & MSG_PEEK ) ) { if ( sk -> sk_type == SOCK_STREAM ) { skb_pull ( skb , copied ) ; if ( skb -> len ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; goto done ; } } kfree_skb ( skb ) ; if ( iucv -> transport == AF_IUCV_TRANS_HIPER ) { atomic_inc ( & iucv -> msg_recv ) ; if ( atomic_read ( & iucv -> msg_recv ) > iucv -> msglimit ) { WARN_ON ( 1 ) ; iucv_sock_close ( sk ) ; return - EFAULT ; } } spin_lock_bh ( & iucv -> message_q . lock ) ; rskb = skb_dequeue ( & iucv -> backlog_skb_q ) ; while ( rskb ) { if ( sock_queue_rcv_skb ( sk , rskb ) ) { skb_queue_head ( & iucv -> backlog_skb_q , rskb ) ; break ; } else { rskb = skb_dequeue ( & iucv -> backlog_skb_q ) ; } } if ( skb_queue_empty ( & iucv -> backlog_skb_q ) ) { if ( ! list_empty ( & iucv -> message_q . list ) ) iucv_process_message_q ( sk ) ; if ( atomic_read ( & iucv -> msg_recv ) >= iucv -> msglimit / 2 ) { err = iucv_send_ctrl ( sk , AF_IUCV_FLAG_WIN ) ; if ( err ) { sk -> sk_state = IUCV_DISCONN ; sk -> sk_state_change ( sk ) ; } } } spin_unlock_bh ( & iucv -> message_q . lock ) ; } done : if ( sk -> sk_type == SOCK_SEQPACKET && ( flags & MSG_TRUNC ) ) copied = rlen ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int err = 0 ; msg -> msg_namelen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0879\n\n```\nCWE-20 void exit_io_context ( void ) { struct io_context * ioc ; task_lock ( current ) ; ioc = current -> io_context ; current -> io_context = NULL ; task_unlock ( current ) ; if ( atomic_dec_and_test ( & ioc -> nr_tasks ) ) { if ( ioc -> aic && ioc -> aic -> exit ) ioc -> aic -> exit ( ioc -> aic ) ; cfq_exit ( ioc ) ; <S2SV_StartBug> put_io_context ( ioc ) ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ioc ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9773\n\n```\nCWE-284 void _modinit ( module_t * m ) { service_named_bind_command ( \"chanserv\" , & cs_flags ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cs_flags ) ; add_bool_conf_item ( \"ANOPE_FLAGS_COMPAT\" , & chansvs . me -> conf_table , 0 , & anope_flags_compat , true ) ; hook_add_event ( \"nick_can_register\" ) ; hook_add_nick_can_register ( check_registration_keywords ) ; hook_add_event ( \"user_can_register\" ) ; hook_add_user_can_register ( check_registration_keywords ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0551\n\n```\nCWE-000 WORD32 ih264d_mark_err_slice_skip ( dec_struct_t * ps_dec , WORD32 num_mb_skip , UWORD8 u1_is_idr_slice , UWORD16 u2_frame_num , pocstruct_t * ps_cur_poc , WORD32 prev_slice_err ) { WORD32 i2_cur_mb_addr ; UWORD32 u1_num_mbs , u1_num_mbsNby2 ; UWORD32 u1_mb_idx = ps_dec -> u1_mb_idx ; UWORD32 i2_mb_skip_run ; UWORD32 u1_num_mbs_next , u1_end_of_row ; const UWORD32 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; UWORD32 u1_slice_end ; UWORD32 u1_tfr_n_mb ; UWORD32 u1_decode_nmb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; dec_slice_params_t * ps_slice = ps_dec -> ps_cur_slice ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; deblk_mb_t * ps_cur_deblk_mb ; dec_mb_info_t * ps_cur_mb_info ; parse_pmbarams_t * ps_parse_mb_data ; UWORD32 u1_inter_mb_type ; UWORD32 u1_deblk_mb_type ; UWORD16 u2_total_mbs_coded ; UWORD32 u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; parse_part_params_t * ps_part_info ; WORD32 ret ; <S2SV_StartBug> if ( ps_dec -> ps_dec_err_status -> u1_err_flag & REJECT_CUR_PIC ) <S2SV_EndBug> { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return 0 ; } if ( ps_dec -> ps_cur_slice -> u1_mbaff_frame_flag && ( num_mb_skip & 1 ) ) { num_mb_skip ++ ; } ps_dec -> ps_dpb_cmds -> u1_long_term_reference_flag = 0 ; if ( prev_slice_err == 1 ) { ps_dec -> ps_cur_slice -> u2_frame_num = u2_frame_num ; <S2SV_StartBug> if ( ! ps_dec -> u1_first_slice_in_stream ) <S2SV_EndBug> { ih264d_end_of_pic ( ps_dec , u1_is_idr_slice , ps_dec -> ps_cur_slice -> u2_frame_num ) ; ps_dec -> s_cur_pic_poc . u2_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; } { WORD32 i , j , poc = 0 ; ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = 0 ; ps_dec -> pf_mvpred = ih264d_mvpred_nonmbaff ; ps_dec -> p_form_mb_part_info = ih264d_form_mb_part_info_bp ; ps_dec -> p_motion_compensate = ih264d_motion_compensate_bp ; if ( ps_dec -> ps_cur_pic != NULL ) poc = ps_dec -> ps_cur_pic -> i4_poc + 2 ; j = - 1 ; for ( i = 0 ; i < MAX_NUM_PIC_PARAMS ; i ++ ) { if ( ps_dec -> ps_pps [ i ] . u1_is_valid == TRUE ) { if ( ps_dec -> ps_pps [ i ] . ps_sps -> u1_is_valid == TRUE ) { j = i ; break ; } } } if ( j == - 1 ) { return ERROR_INV_SLICE_HDR_T ; } if ( ps_dec -> u4_pic_buf_got == 0 ) { ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_cur_slice -> u1_nal_ref_idc = 1 ; ps_dec -> ps_cur_slice -> u1_nal_unit_type = 1 ; ret = ih264d_start_of_pic ( ps_dec , poc , ps_cur_poc , ps_dec -> ps_cur_slice -> u2_frame_num , & ps_dec -> ps_pps [ j ] ) ; if ( ret != OK ) { return ret ; } } ps_dec -> ps_ref_pic_buf_lx [ 0 ] [ 0 ] -> u1_pic_buf_id = 0 ; ps_dec -> u4_output_present = 0 ; { ih264d_get_next_display_field ( ps_dec , ps_dec -> ps_out_buffer , & ( ps_dec -> s_disp_op ) ) ; if ( 0 != ps_dec -> s_disp_op . u4_error_code ) { ps_dec -> u4_fmt_conv_cur_row = ps_dec -> s_disp_frame_info . u4_y_ht ; } else ps_dec -> u4_output_present = 1 ; } if ( ps_dec -> u1_separate_parse == 1 ) { if ( ps_dec -> u4_dec_thread_created == 0 ) { ithread_create ( ps_dec -> pv_dec_thread_handle , NULL , ( void * ) ih264d_decode_picture_thread , ( void * ) ps_dec ) ; ps_dec -> u4_dec_thread_created = 1 ; } if ( ( ps_dec -> u4_num_cores == 3 ) && ( ( ps_dec -> u4_app_disable_deblk_frm == 0 ) || ps_dec -> i1_recon_in_thread3_flag ) && ( ps_dec -> u4_bs_deblk_thread_created == 0 ) ) { ps_dec -> u4_start_recon_deblk = 0 ; ithread_create ( ps_dec -> pv_bs_deblk_thread_handle , NULL , ( void * ) ih264d_recon_deblk_thread , ( void * ) ps_dec ) ; ps_dec -> u4_bs_deblk_thread_created = 1 ; } } } ps_dec -> u4_first_slice_in_pic = 0 ; } else { dec_slice_struct_t * ps_parse_cur_slice ; ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; if ( ps_dec -> u1_slice_header_done && ps_parse_cur_slice == ps_dec -> ps_parse_cur_slice ) { if ( ( u1_mbaff ) && ( ps_dec -> u4_num_mbs_cur_nmb & 1 ) ) { ps_dec -> u4_num_mbs_cur_nmb = ps_dec -> u4_num_mbs_cur_nmb - 1 ; ps_dec -> u2_cur_mb_addr -- ; } u1_num_mbs = ps_dec -> u4_num_mbs_cur_nmb ; if ( u1_num_mbs ) { ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs - 1 ; } else { if ( ps_dec -> u1_separate_parse ) { ps_cur_mb_info = ps_dec -> ps_nmb_info ; } else { ps_cur_mb_info = ps_dec -> ps_nmb_info + ps_dec -> u4_num_mbs_prev_nmb - 1 ; } } ps_dec -> u2_mby = ps_cur_mb_info -> u2_mby ; ps_dec -> u2_mbx = ps_cur_mb_info -> u2_mbx ; ps_dec -> u1_mb_ngbr_availablity = ps_cur_mb_info -> u1_mb_ngbr_availablity ; if ( u1_num_mbs ) { ps_dec -> pv_parse_tu_coeff_data = ps_dec -> pv_prev_mb_parse_tu_coeff_data ; ps_dec -> u2_cur_mb_addr -- ; ps_dec -> i4_submb_ofst -= SUB_BLK_SIZE ; if ( ps_dec -> u1_pr_sl_type == P_SLICE || ps_dec -> u1_pr_sl_type == B_SLICE ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; } u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = 1 ; u1_tfr_n_mb = 1 ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; ps_dec -> u1_mb_idx = 0 ; ps_dec -> u4_num_mbs_cur_nmb = 0 ; } if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; return 0 ; } if ( ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice < ( UWORD32 ) ( ps_dec -> u2_total_mbs_coded >> ps_slice -> u1_mbaff_frame_flag ) ) { ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; ps_dec -> u2_cur_slice_num ++ ; ps_dec -> ps_parse_cur_slice ++ ; } } else { ps_dec -> ps_parse_cur_slice = ps_dec -> ps_dec_slice_buf + ps_dec -> u2_cur_slice_num ; } } { WORD32 num_entries ; WORD32 size ; UWORD8 * pu1_buf ; num_entries = MIN ( MAX_FRAMES , ps_dec -> u4_num_ref_frames_at_init ) ; num_entries = 2 * ( ( 2 * num_entries ) + 1 ) ; size = num_entries * sizeof ( void * ) ; size += PAD_MAP_IDX_POC * sizeof ( void * ) ; pu1_buf = ( UWORD8 * ) ps_dec -> pv_map_ref_idx_to_poc_buf ; pu1_buf += size * ps_dec -> u2_cur_slice_num ; ps_dec -> ps_parse_cur_slice -> ppv_map_ref_idx_to_poc = ( volatile void * * ) pu1_buf ; } ps_dec -> ps_cur_slice -> u2_first_mb_in_slice = ps_dec -> u2_total_mbs_coded >> u1_mbaff ; ps_dec -> ps_cur_slice -> i1_slice_alpha_c0_offset = 0 ; ps_dec -> ps_cur_slice -> i1_slice_beta_offset = 0 ; if ( ps_dec -> ps_cur_slice -> u1_field_pic_flag ) ps_dec -> u2_prv_frame_num = ps_dec -> ps_cur_slice -> u2_frame_num ; ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice = ps_dec -> u2_total_mbs_coded >> u1_mbaff ; ps_dec -> ps_parse_cur_slice -> u2_log2Y_crwd = ps_dec -> ps_cur_slice -> u2_log2Y_crwd ; if ( ps_dec -> u1_separate_parse ) { ps_dec -> ps_parse_cur_slice -> pv_tu_coeff_data_start = ps_dec -> pv_parse_tu_coeff_data ; } else { ps_dec -> pv_proc_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; } u1_inter_mb_type = P_MB ; u1_deblk_mb_type = D_INTER_MB ; ps_dec -> ps_cur_slice -> u1_slice_type = P_SLICE ; ps_dec -> ps_parse_cur_slice -> slice_type = P_SLICE ; ps_dec -> pf_mvpred_ref_tfr_nby2mb = ih264d_mv_pred_ref_tfr_nby2_pmb ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; ps_dec -> u2_mbx = ( MOD ( ps_dec -> ps_cur_slice -> u2_first_mb_in_slice - 1 , ps_dec -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby = ( DIV ( ps_dec -> ps_cur_slice -> u2_first_mb_in_slice - 1 , ps_dec -> u2_frm_wd_in_mbs ) ) ; ps_dec -> u2_mby <<= u1_mbaff ; ps_dec -> u1_slice_header_done = 2 ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mb_idx = ps_dec -> u1_mb_idx ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; u1_num_mbs = u1_mb_idx ; u1_slice_end = 0 ; u1_tfr_n_mb = 0 ; u1_decode_nmb = 0 ; u1_num_mbsNby2 = 0 ; i2_cur_mb_addr = ps_dec -> u2_total_mbs_coded ; i2_mb_skip_run = num_mb_skip ; while ( ! u1_slice_end ) { UWORD8 u1_mb_type ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) break ; ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_cur_mb_info -> u1_Mux = 0 ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_parse_mb_data -> u1_num_part = 1 ; ps_parse_mb_data -> u1_isI_mb = 0 ; if ( u1_mbaff ) ih264d_get_mb_info_cavlc_mbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; else ih264d_get_mb_info_cavlc_nonmbaff ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , i2_mb_skip_run ) ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) { ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; } ps_dec -> i1_prev_mb_qp_delta = 0 ; ps_dec -> u1_sub_mb_num = 0 ; ps_cur_mb_info -> u1_mb_type = MB_SKIP ; ps_cur_mb_info -> u1_mb_mc_mode = PRED_16x16 ; ps_cur_mb_info -> u1_cbp = 0 ; ps_part_info = ps_dec -> ps_part ; ps_part_info -> u1_is_direct = PART_DIRECT_16x16 ; ps_part_info -> u1_sub_mb_num = 0 ; ps_dec -> ps_part ++ ; ih264d_update_nnz_for_skipmb ( ps_dec , ps_cur_mb_info , CAVLC ) ; ps_cur_mb_info -> ps_curmb -> u1_mb_type = u1_inter_mb_type ; ps_cur_deblk_mb -> u1_mb_type |= u1_deblk_mb_type ; i2_mb_skip_run -- ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; u1_num_mbs ++ ; u1_num_mbsNby2 ++ ; ps_parse_mb_data ++ ; u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_slice_end = ! i2_mb_skip_run ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || u1_slice_end ; u1_decode_nmb = u1_tfr_n_mb || u1_slice_end ; ps_cur_mb_info -> u1_end_of_slice = u1_slice_end ; if ( u1_decode_nmb ) { ps_dec -> pf_mvpred_ref_tfr_nby2mb ( ps_dec , u1_mb_idx , u1_num_mbs ) ; u1_num_mbsNby2 = 0 ; ps_parse_mb_data = ps_dec -> ps_parse_mb_data ; ps_dec -> ps_part = ps_dec -> ps_parse_part_params ; if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ; if ( u1_tfr_n_mb ) u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ps_dec -> ps_parse_cur_slice -> u4_first_mb_in_slice ; H264_DEC_DEBUG_PRINT ( \"Mbs<S2SV_blank>in<S2SV_blank>slice:<S2SV_blank>%d\\\\n\" , ps_dec -> ps_cur_slice -> u4_mbs_in_slice ) ; if ( ps_dec -> u4_first_slice_in_pic != 0 ) { ps_dec -> ps_parse_cur_slice ++ ; ps_dec -> u2_cur_slice_num ++ ; } ps_dec -> i2_prev_slice_mbx = ps_dec -> u2_mbx ; ps_dec -> i2_prev_slice_mby = ps_dec -> u2_mby ; if ( ps_dec -> u2_total_mbs_coded >= ps_dec -> u2_frm_ht_in_mbs * ps_dec -> u2_frm_wd_in_mbs ) { ps_dec -> u1_pic_decode_done = 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> WORD32 ret ; UNUSED ( u1_is_idr_slice ) ; <S2SV_ModStart> = u2_frame_num ; <S2SV_ModEnd> { WORD32 i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12894\n\n```\nCWE-125 <S2SV_StartBug> static inline struct enamemem * <S2SV_EndBug> lookup_bytestring ( netdissect_options * ndo , register const u_char * bs , const unsigned int nlen ) { <S2SV_StartBug> struct enamemem * tp ; <S2SV_EndBug> register u_int i , j , k ; if ( nlen >= 6 ) { k = ( bs [ 0 ] << 8 ) | bs [ 1 ] ; j = ( bs [ 2 ] << 8 ) | bs [ 3 ] ; i = ( bs [ 4 ] << 8 ) | bs [ 5 ] ; } else if ( nlen >= 4 ) { k = ( bs [ 0 ] << 8 ) | bs [ 1 ] ; j = ( bs [ 2 ] << 8 ) | bs [ 3 ] ; i = 0 ; } else i = j = k = 0 ; tp = & bytestringtable [ ( i ^ j ) & ( HASHNAMESIZE - 1 ) ] ; <S2SV_StartBug> while ( tp -> e_nxt ) <S2SV_EndBug> if ( tp -> e_addr0 == i && <S2SV_StartBug> tp -> e_addr1 == j && <S2SV_EndBug> <S2SV_StartBug> tp -> e_addr2 == k && <S2SV_EndBug> <S2SV_StartBug> memcmp ( ( const char * ) bs , ( const char * ) ( tp -> e_bs ) , nlen ) == 0 ) <S2SV_EndBug> return tp ; else <S2SV_StartBug> tp = tp -> e_nxt ; <S2SV_EndBug> tp -> e_addr0 = i ; tp -> e_addr1 = j ; tp -> e_addr2 = k ; tp -> e_bs = ( u_char * ) calloc ( 1 , nlen + 1 ) ; <S2SV_StartBug> if ( tp -> e_bs == NULL ) <S2SV_EndBug> ( * ndo -> ndo_error ) ( ndo , \"lookup_bytestring:<S2SV_blank>calloc\" ) ; <S2SV_StartBug> memcpy ( tp -> e_bs , bs , nlen ) ; <S2SV_EndBug> <S2SV_StartBug> tp -> e_nxt = ( struct enamemem * ) calloc ( 1 , sizeof ( * tp ) ) ; <S2SV_EndBug> <S2SV_StartBug> if ( tp -> e_nxt == NULL ) <S2SV_EndBug> ( * ndo -> ndo_error ) ( ndo , \"lookup_bytestring:<S2SV_blank>calloc\" ) ; return tp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> static inline struct bsnamemem <S2SV_ModEnd> * lookup_bytestring ( <S2SV_ModStart> ) { struct bsnamemem <S2SV_ModEnd> * tp ; <S2SV_ModStart> ( tp -> bs_nxt ) if ( nlen == tp -> bs_nbytes <S2SV_ModEnd> && tp -> <S2SV_ModStart> && tp -> bs_addr0 == i <S2SV_ModEnd> && tp -> <S2SV_ModStart> && tp -> bs_addr1 == j && tp -> bs_addr2 <S2SV_ModEnd> == k && <S2SV_ModStart> ( tp -> bs_bytes <S2SV_ModEnd> ) , nlen <S2SV_ModStart> = tp -> bs_nxt ; tp -> bs_addr0 = i ; tp -> bs_addr1 = j ; tp -> bs_addr2 = k ; tp -> bs_bytes <S2SV_ModEnd> = ( u_char <S2SV_ModStart> ( tp -> bs_bytes <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ( tp -> bs_bytes , bs , nlen ) ; tp -> bs_nbytes = nlen ; tp -> bs_nxt <S2SV_ModEnd> = ( struct <S2SV_ModStart> = ( struct bsnamemem <S2SV_ModEnd> * ) calloc <S2SV_ModStart> ( tp -> bs_nxt <S2SV_ModEnd> == NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_iht4x4_add ( TX_TYPE tx_type , const int16_t * input , uint8_t * dest , <S2SV_EndBug> int stride , int eob ) { if ( tx_type == DCT_DCT ) vp9_idct4x4_add ( input , dest , stride , eob ) ; else vp9_iht4x4_16_add ( input , dest , stride , tx_type ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tx_type , const tran_low_t <S2SV_ModEnd> * input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20749\n\n```\nCWE-787 char * rfbProcessFileTransferReadBuffer ( rfbClientPtr cl , uint32_t length ) { char * buffer = NULL ; int n = 0 ; FILEXFER_ALLOWED_OR_CLOSE_AND_RETURN ( \"\" , cl , NULL ) ; <S2SV_StartBug> if ( length > 0 ) { <S2SV_EndBug> <S2SV_StartBug> buffer = malloc ( ( uint64_t ) length + 1 ) ; <S2SV_EndBug> if ( buffer != NULL ) { if ( ( n = rfbReadExact ( cl , ( char * ) buffer , length ) ) <= 0 ) { if ( n != 0 ) rfbLogPerror ( \"rfbProcessFileTransferReadBuffer:<S2SV_blank>read\" ) ; rfbCloseClient ( cl ) ; if ( buffer != NULL ) free ( buffer ) ; return NULL ; } buffer [ length ] = 0 ; } } return buffer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( length == SIZE_MAX ) { rfbErr ( \"rfbProcessFileTransferReadBuffer:<S2SV_blank>too<S2SV_blank>big<S2SV_blank>file<S2SV_blank>transfer<S2SV_blank>length<S2SV_blank>requested:<S2SV_blank>%u\" , ( unsigned int ) length ) ; rfbCloseClient ( cl ) ; return NULL ; } if ( length <S2SV_ModStart> malloc ( ( size_t <S2SV_ModEnd> ) length +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 <S2SV_StartBug> static int mptctl_do_reset ( unsigned long arg ) <S2SV_EndBug> { struct mpt_ioctl_diag_reset __user * urinfo = ( void __user * ) arg ; <S2SV_StartBug> struct mpt_ioctl_diag_reset krinfo ; <S2SV_EndBug> MPT_ADAPTER * iocp ; if ( copy_from_user ( & krinfo , urinfo , sizeof ( struct mpt_ioctl_diag_reset ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_do_reset<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>mpt_ioctl_diag_reset<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , urinfo ) ; <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> } if ( mpt_verify_adapter ( krinfo . hdr . iocnum , & iocp ) < 0 ) { printk ( KERN_DEBUG MYNAM \"%s@%d::mptctl_do_reset<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , krinfo . hdr . iocnum ) ; return - ENODEV ; } dctlprintk ( iocp , printk ( MYIOC_s_DEBUG_FMT \"mptctl_do_reset<S2SV_blank>called.\\\\n\" , iocp -> name ) ) ; if ( mpt_HardResetHandler ( iocp , CAN_SLEEP ) != 0 ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_do_reset<S2SV_blank>-<S2SV_blank>reset<S2SV_blank>failed.\\\\n\" , iocp -> name , __FILE__ , __LINE__ ) ; return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_do_reset ( MPT_ADAPTER * iocp , <S2SV_ModStart> struct mpt_ioctl_diag_reset krinfo <S2SV_ModEnd> ; if ( <S2SV_ModStart> return - EFAULT <S2SV_ModEnd> ; } dctlprintk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10887\n\n```\nCWE-125 int git_delta_apply ( void * * out , size_t * out_len , const unsigned char * base , size_t base_len , const unsigned char * delta , size_t delta_len ) { const unsigned char * delta_end = delta + delta_len ; size_t base_sz , res_sz , alloc_sz ; unsigned char * res_dp ; * out = NULL ; * out_len = 0 ; if ( ( hdr_sz ( & base_sz , & delta , delta_end ) < 0 ) || ( base_sz != base_len ) ) { giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta:<S2SV_blank>base<S2SV_blank>size<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>given<S2SV_blank>data\" ) ; return - 1 ; } if ( hdr_sz ( & res_sz , & delta , delta_end ) < 0 ) { giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta:<S2SV_blank>base<S2SV_blank>size<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>given<S2SV_blank>data\" ) ; return - 1 ; } GITERR_CHECK_ALLOC_ADD ( & alloc_sz , res_sz , 1 ) ; res_dp = git__malloc ( alloc_sz ) ; GITERR_CHECK_ALLOC ( res_dp ) ; res_dp [ res_sz ] = '\\\\0' ; * out = res_dp ; * out_len = res_sz ; while ( delta < delta_end ) { unsigned char cmd = * delta ++ ; if ( cmd & 0x80 ) { <S2SV_StartBug> size_t off = 0 , len = 0 ; <S2SV_EndBug> # define ADD_DELTA ( o , shift ) { if ( delta < delta_end ) ( o ) |= ( ( unsigned ) * delta ++ << shift ) ; else goto fail ; } if ( cmd & 0x01 ) ADD_DELTA ( off , 0UL ) ; if ( cmd & 0x02 ) ADD_DELTA ( off , 8UL ) ; if ( cmd & 0x04 ) ADD_DELTA ( off , 16UL ) ; if ( cmd & 0x08 ) ADD_DELTA ( off , 24UL ) ; if ( cmd & 0x10 ) ADD_DELTA ( len , 0UL ) ; if ( cmd & 0x20 ) ADD_DELTA ( len , 8UL ) ; if ( cmd & 0x40 ) ADD_DELTA ( len , 16UL ) ; if ( ! len ) len = 0x10000 ; # undef ADD_DELTA <S2SV_StartBug> if ( base_len < off + len || res_sz < len ) <S2SV_EndBug> goto fail ; memcpy ( res_dp , base + off , len ) ; res_dp += len ; res_sz -= len ; } else if ( cmd ) { if ( delta_end - delta < cmd || res_sz < cmd ) goto fail ; memcpy ( res_dp , delta , cmd ) ; delta += cmd ; res_dp += cmd ; res_sz -= cmd ; } else { goto fail ; } } if ( delta != delta_end || res_sz ) goto fail ; return 0 ; fail : git__free ( * out ) ; * out = NULL ; * out_len = 0 ; giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta\" ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = 0 , end <S2SV_ModStart> ADD_DELTA if ( GIT_ADD_SIZET_OVERFLOW ( & end , off , len ) || base_len < end <S2SV_ModEnd> || res_sz <\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3400\n\n```\nCWE-119 static int udf_load_logicalvol ( struct super_block * sb , sector_t block , struct kernel_lb_addr * fileset ) { struct logicalVolDesc * lvd ; int i , j , offset ; uint8_t type ; struct udf_sb_info * sbi = UDF_SB ( sb ) ; struct genericPartitionMap * gpm ; uint16_t ident ; struct buffer_head * bh ; <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> bh = udf_read_tagged ( sb , block , block , & ident ) ; if ( ! bh ) return 1 ; BUG_ON ( ident != TAG_IDENT_LVD ) ; <S2SV_StartBug> lvd = ( struct logicalVolDesc * ) bh -> b_data ; <S2SV_EndBug> ret = udf_sb_alloc_partition_maps ( sb , le32_to_cpu ( lvd -> numPartitionMaps ) ) ; if ( ret ) goto out_bh ; for ( i = 0 , offset = 0 ; <S2SV_StartBug> i < sbi -> s_partitions && offset < le32_to_cpu ( lvd -> mapTableLength ) ; <S2SV_EndBug> i ++ , offset += gpm -> partitionMapLength ) { struct udf_part_map * map = & sbi -> s_partmaps [ i ] ; gpm = ( struct genericPartitionMap * ) & ( lvd -> partitionMaps [ offset ] ) ; type = gpm -> partitionMapType ; if ( type == 1 ) { struct genericPartitionMap1 * gpm1 = ( struct genericPartitionMap1 * ) gpm ; map -> s_partition_type = UDF_TYPE1_MAP15 ; map -> s_volumeseqnum = le16_to_cpu ( gpm1 -> volSeqNum ) ; map -> s_partition_num = le16_to_cpu ( gpm1 -> partitionNum ) ; map -> s_partition_func = NULL ; } else if ( type == 2 ) { struct udfPartitionMap2 * upm2 = ( struct udfPartitionMap2 * ) gpm ; if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_VIRTUAL , strlen ( UDF_ID_VIRTUAL ) ) ) { u16 suf = le16_to_cpu ( ( ( __le16 * ) upm2 -> partIdent . identSuffix ) [ 0 ] ) ; if ( suf < 0x0200 ) { map -> s_partition_type = UDF_VIRTUAL_MAP15 ; map -> s_partition_func = udf_get_pblock_virt15 ; } else { map -> s_partition_type = UDF_VIRTUAL_MAP20 ; map -> s_partition_func = udf_get_pblock_virt20 ; } } else if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_SPARABLE , strlen ( UDF_ID_SPARABLE ) ) ) { uint32_t loc ; struct sparingTable * st ; struct sparablePartitionMap * spm = ( struct sparablePartitionMap * ) gpm ; map -> s_partition_type = UDF_SPARABLE_MAP15 ; map -> s_type_specific . s_sparing . s_packet_len = le16_to_cpu ( spm -> packetLength ) ; for ( j = 0 ; j < spm -> numSparingTables ; j ++ ) { struct buffer_head * bh2 ; loc = le32_to_cpu ( spm -> locSparingTable [ j ] ) ; bh2 = udf_read_tagged ( sb , loc , loc , & ident ) ; map -> s_type_specific . s_sparing . s_spar_map [ j ] = bh2 ; if ( bh2 == NULL ) continue ; st = ( struct sparingTable * ) bh2 -> b_data ; if ( ident != 0 || strncmp ( st -> sparingIdent . ident , UDF_ID_SPARING , strlen ( UDF_ID_SPARING ) ) ) { brelse ( bh2 ) ; map -> s_type_specific . s_sparing . s_spar_map [ j ] = NULL ; } } map -> s_partition_func = udf_get_pblock_spar15 ; } else if ( ! strncmp ( upm2 -> partIdent . ident , UDF_ID_METADATA , strlen ( UDF_ID_METADATA ) ) ) { struct udf_meta_data * mdata = & map -> s_type_specific . s_metadata ; struct metadataPartitionMap * mdm = ( struct metadataPartitionMap * ) & ( lvd -> partitionMaps [ offset ] ) ; udf_debug ( \"Parsing<S2SV_blank>Logical<S2SV_blank>vol<S2SV_blank>part<S2SV_blank>%d<S2SV_blank>type<S2SV_blank>%d<S2SV_blank><S2SV_blank>id=%s\\\\n\" , i , type , UDF_ID_METADATA ) ; map -> s_partition_type = UDF_METADATA_MAP25 ; map -> s_partition_func = udf_get_pblock_meta25 ; mdata -> s_meta_file_loc = le32_to_cpu ( mdm -> metadataFileLoc ) ; mdata -> s_mirror_file_loc = le32_to_cpu ( mdm -> metadataMirrorFileLoc ) ; mdata -> s_bitmap_file_loc = le32_to_cpu ( mdm -> metadataBitmapFileLoc ) ; mdata -> s_alloc_unit_size = le32_to_cpu ( mdm -> allocUnitSize ) ; mdata -> s_align_unit_size = le16_to_cpu ( mdm -> alignUnitSize ) ; if ( mdm -> flags & 0x01 ) mdata -> s_flags |= MF_DUPLICATE_MD ; udf_debug ( \"Metadata<S2SV_blank>Ident<S2SV_blank>suffix=0x%x\\\\n\" , le16_to_cpu ( * ( __le16 * ) mdm -> partIdent . identSuffix ) ) ; udf_debug ( \"Metadata<S2SV_blank>part<S2SV_blank>num=%d\\\\n\" , le16_to_cpu ( mdm -> partitionNum ) ) ; udf_debug ( \"Metadata<S2SV_blank>part<S2SV_blank>alloc<S2SV_blank>unit<S2SV_blank>size=%d\\\\n\" , le32_to_cpu ( mdm -> allocUnitSize ) ) ; udf_debug ( \"Metadata<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataFileLoc ) ) ; udf_debug ( \"Mirror<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataMirrorFileLoc ) ) ; udf_debug ( \"Bitmap<S2SV_blank>file<S2SV_blank>loc=%d\\\\n\" , le32_to_cpu ( mdm -> metadataBitmapFileLoc ) ) ; udf_debug ( \"Flags:<S2SV_blank>%d<S2SV_blank>%d\\\\n\" , mdata -> s_flags , mdm -> flags ) ; } else { udf_debug ( \"Unknown<S2SV_blank>ident:<S2SV_blank>%s\\\\n\" , upm2 -> partIdent . ident ) ; continue ; } map -> s_volumeseqnum = le16_to_cpu ( upm2 -> volSeqNum ) ; map -> s_partition_num = le16_to_cpu ( upm2 -> partitionNum ) ; } udf_debug ( \"Partition<S2SV_blank>(%d:%d)<S2SV_blank>type<S2SV_blank>%d<S2SV_blank>on<S2SV_blank>volume<S2SV_blank>%d\\\\n\" , i , map -> s_partition_num , type , map -> s_volumeseqnum ) ; } if ( fileset ) { struct long_ad * la = ( struct long_ad * ) & ( lvd -> logicalVolContentsUse [ 0 ] ) ; * fileset = lelb_to_cpu ( la -> extLocation ) ; udf_debug ( \"FileSet<S2SV_blank>found<S2SV_blank>in<S2SV_blank>LogicalVolDesc<S2SV_blank>at<S2SV_blank>block=%d,<S2SV_blank>partition=%d\\\\n\" , fileset -> logicalBlockNum , fileset -> partitionReferenceNum ) ; } if ( lvd -> integritySeqExt . extLength ) udf_load_logicalvolint ( sb , leea_to_cpu ( lvd -> integritySeqExt ) ) ; out_bh : brelse ( bh ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * bh ; unsigned int table_len ; <S2SV_ModStart> -> b_data ; table_len = le32_to_cpu ( lvd -> mapTableLength ) ; if ( sizeof ( * lvd ) + table_len > sb -> s_blocksize ) { udf_err ( sb , \"error<S2SV_blank>loading<S2SV_blank>logical<S2SV_blank>volume<S2SV_blank>descriptor:<S2SV_blank>\" \"Partition<S2SV_blank>table<S2SV_blank>too<S2SV_blank>long<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%lu)\\\\n\" , table_len , sb -> s_blocksize - sizeof ( * lvd ) ) ; goto out_bh ; } <S2SV_ModStart> && offset < table_len <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15924\n\n```\nCWE-78 static char * construct_command_line ( struct manager_ctx * manager , struct server * server ) { static char cmd [ BUF_SIZE ] ; <S2SV_StartBug> char * method = manager -> method ; <S2SV_EndBug> int i ; <S2SV_StartBug> build_config ( working_dir , server ) ; <S2SV_EndBug> if ( server -> method ) method = server -> method ; memset ( cmd , 0 , BUF_SIZE ) ; snprintf ( cmd , BUF_SIZE , <S2SV_StartBug> \"%s<S2SV_blank>-m<S2SV_blank>%s<S2SV_blank>--manager-address<S2SV_blank>%s<S2SV_blank>-f<S2SV_blank>%s/.shadowsocks_%s.pid<S2SV_blank>-c<S2SV_blank>%s/.shadowsocks_%s.conf\" , <S2SV_EndBug> <S2SV_StartBug> executable , method , manager -> manager_address , <S2SV_EndBug> <S2SV_StartBug> working_dir , server -> port , working_dir , server -> port ) ; <S2SV_EndBug> if ( manager -> acl != NULL ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--acl<S2SV_blank>%s\" , manager -> acl ) ; } if ( manager -> timeout != NULL ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-t<S2SV_blank>%s\" , manager -> timeout ) ; } # ifdef HAVE_SETRLIMIT if ( manager -> nofile ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-n<S2SV_blank>%d\" , manager -> nofile ) ; } # endif if ( manager -> user != NULL ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-a<S2SV_blank>%s\" , manager -> user ) ; } if ( manager -> verbose ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-v\" ) ; } if ( server -> mode == NULL && manager -> mode == UDP_ONLY ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-U\" ) ; } if ( server -> mode == NULL && manager -> mode == TCP_AND_UDP ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-u\" ) ; } if ( server -> fast_open [ 0 ] == 0 && manager -> fast_open ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--fast-open\" ) ; } if ( manager -> ipv6first ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-6\" ) ; } if ( manager -> mtu ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--mtu<S2SV_blank>%d\" , manager -> mtu ) ; } if ( server -> plugin == NULL && manager -> plugin ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--plugin<S2SV_blank>\\\\\"%s\\\\\"\" , manager -> plugin ) ; } if ( server -> plugin_opts == NULL && manager -> plugin_opts ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--plugin-opts<S2SV_blank>\\\\\"%s\\\\\"\" , manager -> plugin_opts ) ; } for ( i = 0 ; i < manager -> nameserver_num ; i ++ ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-d<S2SV_blank>%s\" , manager -> nameservers [ i ] ) ; } for ( i = 0 ; i < manager -> host_num ; i ++ ) { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>-s<S2SV_blank>%s\" , manager -> hosts [ i ] ) ; } { int len = strlen ( cmd ) ; snprintf ( cmd + len , BUF_SIZE - len , \"<S2SV_blank>--reuse-port\" ) ; } if ( verbose ) { LOGI ( \"cmd:<S2SV_blank>%s\" , cmd ) ; } return cmd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BUF_SIZE ] ; int i ; int port ; port = atoi ( server -> port ) <S2SV_ModEnd> ; build_config ( <S2SV_ModStart> ( working_dir , manager , server ) <S2SV_ModEnd> ; memset ( <S2SV_ModStart> , BUF_SIZE , \"%s<S2SV_blank>--manager-address<S2SV_blank>%s<S2SV_blank>-f<S2SV_blank>%s/.shadowsocks_%d.pid<S2SV_blank>-c<S2SV_blank>%s/.shadowsocks_%d.conf\" <S2SV_ModEnd> , executable , <S2SV_ModStart> , executable , <S2SV_ModEnd> manager -> manager_address <S2SV_ModStart> , working_dir , <S2SV_ModEnd> port , working_dir <S2SV_ModStart> , working_dir , <S2SV_ModEnd> port ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int caif_stream_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; int copied = 0 ; int target ; int err = 0 ; long timeo ; err = - EOPNOTSUPP ; if ( flags & MSG_OOB ) goto out ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> err = - EAGAIN ; if ( sk -> sk_state == CAIF_CONNECTING ) goto out ; caif_read_lock ( sk ) ; target = sock_rcvlowat ( sk , flags & MSG_WAITALL , size ) ; timeo = sock_rcvtimeo ( sk , flags & MSG_DONTWAIT ) ; do { int chunk ; struct sk_buff * skb ; lock_sock ( sk ) ; skb = skb_dequeue ( & sk -> sk_receive_queue ) ; caif_check_flow_release ( sk ) ; if ( skb == NULL ) { if ( copied >= target ) goto unlock ; err = sock_error ( sk ) ; if ( err ) goto unlock ; err = - ECONNRESET ; if ( sk -> sk_shutdown & RCV_SHUTDOWN ) goto unlock ; err = - EPIPE ; if ( sk -> sk_state != CAIF_CONNECTED ) goto unlock ; if ( sock_flag ( sk , SOCK_DEAD ) ) goto unlock ; release_sock ( sk ) ; err = - EAGAIN ; if ( ! timeo ) break ; caif_read_unlock ( sk ) ; timeo = caif_stream_data_wait ( sk , timeo ) ; if ( signal_pending ( current ) ) { err = sock_intr_errno ( timeo ) ; goto out ; } caif_read_lock ( sk ) ; continue ; unlock : release_sock ( sk ) ; break ; } release_sock ( sk ) ; chunk = min_t ( unsigned int , skb -> len , size ) ; if ( memcpy_toiovec ( msg -> msg_iov , skb -> data , chunk ) ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; if ( copied == 0 ) copied = - EFAULT ; break ; } copied += chunk ; size -= chunk ; if ( ! ( flags & MSG_PEEK ) ) { skb_pull ( skb , chunk ) ; if ( skb -> len ) { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; break ; } kfree_skb ( skb ) ; } else { skb_queue_head ( & sk -> sk_receive_queue , skb ) ; break ; } } while ( size ) ; caif_read_unlock ( sk ) ; out : return copied ? : err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out ; <S2SV_ModEnd> err = -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 static void sas_revalidate_domain ( struct work_struct * work ) { int res = 0 ; struct sas_discovery_event * ev = to_sas_discovery_event ( work ) ; struct asd_sas_port * port = ev -> port ; struct sas_ha_struct * ha = port -> ha ; struct domain_device * ddev = port -> port_dev ; mutex_lock ( & ha -> disco_mutex ) ; if ( test_bit ( SAS_HA_ATA_EH_ACTIVE , & ha -> state ) ) { SAS_DPRINTK ( \"REVALIDATION<S2SV_blank>DEFERRED<S2SV_blank>on<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>pid:%d\\\\n\" , port -> id , task_pid_nr ( current ) ) ; goto out ; } clear_bit ( DISCE_REVALIDATE_DOMAIN , & port -> disc . pending ) ; SAS_DPRINTK ( \"REVALIDATING<S2SV_blank>DOMAIN<S2SV_blank>on<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>pid:%d\\\\n\" , port -> id , task_pid_nr ( current ) ) ; if ( ddev && ( ddev -> dev_type == SAS_FANOUT_EXPANDER_DEVICE || ddev -> dev_type == SAS_EDGE_EXPANDER_DEVICE ) ) res = sas_ex_revalidate_domain ( ddev ) ; SAS_DPRINTK ( \"done<S2SV_blank>REVALIDATING<S2SV_blank>DOMAIN<S2SV_blank>on<S2SV_blank>port<S2SV_blank>%d,<S2SV_blank>pid:%d,<S2SV_blank>res<S2SV_blank>0x%x\\\\n\" , port -> id , task_pid_nr ( current ) , res ) ; out : mutex_unlock ( & ha -> disco_mutex ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> disco_mutex ) ; sas_destruct_devices ( port ) ; sas_destruct_ports ( port ) ; sas_probe_devices ( port ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7912\n\n```\nCWE-416 static void ffs_user_copy_worker ( struct work_struct * work ) { struct ffs_io_data * io_data = container_of ( work , struct ffs_io_data , work ) ; int ret = io_data -> req -> status ? io_data -> req -> status : io_data -> req -> actual ; <S2SV_StartBug> if ( io_data -> read && ret > 0 ) { <S2SV_EndBug> use_mm ( io_data -> mm ) ; ret = copy_to_iter ( io_data -> buf , ret , & io_data -> data ) ; if ( iov_iter_count ( & io_data -> data ) ) ret = - EFAULT ; unuse_mm ( io_data -> mm ) ; } io_data -> kiocb -> ki_complete ( io_data -> kiocb , ret , ret ) ; if ( io_data -> ffs -> ffs_eventfd && <S2SV_StartBug> ! ( io_data -> kiocb -> ki_flags & IOCB_EVENTFD ) ) <S2SV_EndBug> eventfd_signal ( io_data -> ffs -> ffs_eventfd , 1 ) ; <S2SV_StartBug> usb_ep_free_request ( io_data -> ep , io_data -> req ) ; <S2SV_EndBug> io_data -> kiocb -> private = NULL ; if ( io_data -> read ) kfree ( io_data -> to_free ) ; kfree ( io_data -> buf ) ; kfree ( io_data ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> actual ; bool kiocb_has_eventfd = <S2SV_ModEnd> io_data -> kiocb <S2SV_ModStart> ki_flags & IOCB_EVENTFD ; if ( io_data -> read && ret > 0 ) { use_mm ( io_data -> mm ) ; ret = copy_to_iter ( io_data -> buf , ret , & io_data -> data ) ; if ( iov_iter_count ( & io_data -> data ) ) ret = - EFAULT ; unuse_mm ( io_data -> mm ) ; } io_data -> kiocb -> ki_complete ( io_data -> kiocb , ret , ret ) ; if ( io_data -> ffs -> ffs_eventfd && ! kiocb_has_eventfd <S2SV_ModEnd> ) eventfd_signal ( <S2SV_ModStart> -> req ) <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5156\n\n```\nCWE-119 static int virtnet_probe ( struct virtio_device * vdev ) { int i , err ; struct net_device * dev ; struct virtnet_info * vi ; u16 max_queue_pairs ; if ( ! vdev -> config -> get ) { dev_err ( & vdev -> dev , \"%s<S2SV_blank>failure:<S2SV_blank>config<S2SV_blank>access<S2SV_blank>disabled\\\\n\" , __func__ ) ; return - EINVAL ; } if ( ! virtnet_validate_features ( vdev ) ) return - EINVAL ; err = virtio_cread_feature ( vdev , VIRTIO_NET_F_MQ , struct virtio_net_config , max_virtqueue_pairs , & max_queue_pairs ) ; if ( err || max_queue_pairs < VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MIN || max_queue_pairs > VIRTIO_NET_CTRL_MQ_VQ_PAIRS_MAX || ! virtio_has_feature ( vdev , VIRTIO_NET_F_CTRL_VQ ) ) max_queue_pairs = 1 ; dev = alloc_etherdev_mq ( sizeof ( struct virtnet_info ) , max_queue_pairs ) ; if ( ! dev ) return - ENOMEM ; dev -> priv_flags |= IFF_UNICAST_FLT | IFF_LIVE_ADDR_CHANGE ; dev -> netdev_ops = & virtnet_netdev ; dev -> features = NETIF_F_HIGHDMA ; dev -> ethtool_ops = & virtnet_ethtool_ops ; SET_NETDEV_DEV ( dev , & vdev -> dev ) ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_CSUM ) ) { <S2SV_StartBug> dev -> hw_features |= NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_FRAGLIST ; <S2SV_EndBug> if ( csum ) <S2SV_StartBug> dev -> features |= NETIF_F_HW_CSUM | NETIF_F_SG | NETIF_F_FRAGLIST ; <S2SV_EndBug> if ( virtio_has_feature ( vdev , VIRTIO_NET_F_GSO ) ) { dev -> hw_features |= NETIF_F_TSO | NETIF_F_UFO | NETIF_F_TSO_ECN | NETIF_F_TSO6 ; } if ( virtio_has_feature ( vdev , VIRTIO_NET_F_HOST_TSO4 ) ) dev -> hw_features |= NETIF_F_TSO ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_HOST_TSO6 ) ) dev -> hw_features |= NETIF_F_TSO6 ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_HOST_ECN ) ) dev -> hw_features |= NETIF_F_TSO_ECN ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_HOST_UFO ) ) dev -> hw_features |= NETIF_F_UFO ; dev -> features |= NETIF_F_GSO_ROBUST ; if ( gso ) dev -> features |= dev -> hw_features & ( NETIF_F_ALL_TSO | NETIF_F_UFO ) ; } if ( virtio_has_feature ( vdev , VIRTIO_NET_F_GUEST_CSUM ) ) dev -> features |= NETIF_F_RXCSUM ; dev -> vlan_features = dev -> features ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_MAC ) ) virtio_cread_bytes ( vdev , offsetof ( struct virtio_net_config , mac ) , dev -> dev_addr , dev -> addr_len ) ; else eth_hw_addr_random ( dev ) ; vi = netdev_priv ( dev ) ; vi -> dev = dev ; vi -> vdev = vdev ; vdev -> priv = vi ; vi -> stats = alloc_percpu ( struct virtnet_stats ) ; err = - ENOMEM ; if ( vi -> stats == NULL ) goto free ; for_each_possible_cpu ( i ) { struct virtnet_stats * virtnet_stats ; virtnet_stats = per_cpu_ptr ( vi -> stats , i ) ; u64_stats_init ( & virtnet_stats -> tx_syncp ) ; u64_stats_init ( & virtnet_stats -> rx_syncp ) ; } INIT_WORK ( & vi -> config_work , virtnet_config_changed_work ) ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_GUEST_TSO4 ) || virtio_has_feature ( vdev , VIRTIO_NET_F_GUEST_TSO6 ) || virtio_has_feature ( vdev , VIRTIO_NET_F_GUEST_ECN ) || virtio_has_feature ( vdev , VIRTIO_NET_F_GUEST_UFO ) ) vi -> big_packets = true ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_MRG_RXBUF ) ) vi -> mergeable_rx_bufs = true ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_MRG_RXBUF ) || virtio_has_feature ( vdev , VIRTIO_F_VERSION_1 ) ) vi -> hdr_len = sizeof ( struct virtio_net_hdr_mrg_rxbuf ) ; else vi -> hdr_len = sizeof ( struct virtio_net_hdr ) ; if ( virtio_has_feature ( vdev , VIRTIO_F_ANY_LAYOUT ) || virtio_has_feature ( vdev , VIRTIO_F_VERSION_1 ) ) vi -> any_header_sg = true ; if ( virtio_has_feature ( vdev , VIRTIO_NET_F_CTRL_VQ ) ) vi -> has_cvq = true ; if ( vi -> any_header_sg ) dev -> needed_headroom = vi -> hdr_len ; vi -> curr_queue_pairs = 1 ; vi -> max_queue_pairs = max_queue_pairs ; err = init_vqs ( vi ) ; if ( err ) goto free_stats ; # ifdef CONFIG_SYSFS if ( vi -> mergeable_rx_bufs ) dev -> sysfs_rx_queue_group = & virtio_net_mrg_rx_group ; # endif netif_set_real_num_tx_queues ( dev , vi -> curr_queue_pairs ) ; netif_set_real_num_rx_queues ( dev , vi -> curr_queue_pairs ) ; err = register_netdev ( dev ) ; if ( err ) { pr_debug ( \"virtio_net:<S2SV_blank>registering<S2SV_blank>device<S2SV_blank>failed\\\\n\" ) ; goto free_vqs ; } virtio_device_ready ( vdev ) ; for ( i = 0 ; i < vi -> curr_queue_pairs ; i ++ ) { try_fill_recv ( vi , & vi -> rq [ i ] , GFP_KERNEL ) ; if ( vi -> rq [ i ] . vq -> num_free == virtqueue_get_vring_size ( vi -> rq [ i ] . vq ) ) { free_unused_bufs ( vi ) ; err = - ENOMEM ; goto free_recv_bufs ; } } vi -> nb . notifier_call = & virtnet_cpu_callback ; err = register_hotcpu_notifier ( & vi -> nb ) ; if ( err ) { pr_debug ( \"virtio_net:<S2SV_blank>registering<S2SV_blank>cpu<S2SV_blank>notifier<S2SV_blank>failed\\\\n\" ) ; goto free_recv_bufs ; } if ( virtio_has_feature ( vi -> vdev , VIRTIO_NET_F_STATUS ) ) { netif_carrier_off ( dev ) ; schedule_work ( & vi -> config_work ) ; } else { vi -> status = VIRTIO_NET_S_LINK_UP ; netif_carrier_on ( dev ) ; } pr_debug ( \"virtnet:<S2SV_blank>registered<S2SV_blank>device<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>%d<S2SV_blank>RX<S2SV_blank>and<S2SV_blank>TX<S2SV_blank>vq\\'s\\\\n\" , dev -> name , max_queue_pairs ) ; return 0 ; free_recv_bufs : vi -> vdev -> config -> reset ( vdev ) ; free_receive_bufs ( vi ) ; unregister_netdev ( dev ) ; free_vqs : cancel_delayed_work_sync ( & vi -> refill ) ; free_receive_page_frags ( vi ) ; virtnet_del_vqs ( vi ) ; free_stats : free_percpu ( vi -> stats ) ; free : free_netdev ( dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NETIF_F_HW_CSUM | NETIF_F_SG <S2SV_ModEnd> ; if ( <S2SV_ModStart> NETIF_F_HW_CSUM | NETIF_F_SG <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10661\n\n```\nCWE-416 SYSCALL_DEFINE2 ( timerfd_create , int , clockid , int , flags ) { int ufd ; struct timerfd_ctx * ctx ; BUILD_BUG_ON ( TFD_CLOEXEC != O_CLOEXEC ) ; BUILD_BUG_ON ( TFD_NONBLOCK != O_NONBLOCK ) ; if ( ( flags & ~ TFD_CREATE_FLAGS ) || ( clockid != CLOCK_MONOTONIC && clockid != CLOCK_REALTIME && clockid != CLOCK_REALTIME_ALARM && clockid != CLOCK_BOOTTIME && clockid != CLOCK_BOOTTIME_ALARM ) ) return - EINVAL ; if ( ! capable ( CAP_WAKE_ALARM ) && ( clockid == CLOCK_REALTIME_ALARM || clockid == CLOCK_BOOTTIME_ALARM ) ) return - EPERM ; ctx = kzalloc ( sizeof ( * ctx ) , GFP_KERNEL ) ; if ( ! ctx ) return - ENOMEM ; init_waitqueue_head ( & ctx -> wqh ) ; <S2SV_StartBug> ctx -> clockid = clockid ; <S2SV_EndBug> if ( isalarm ( ctx ) ) alarm_init ( & ctx -> t . alarm , ctx -> clockid == CLOCK_REALTIME_ALARM ? ALARM_REALTIME : ALARM_BOOTTIME , timerfd_alarmproc ) ; else hrtimer_init ( & ctx -> t . tmr , clockid , HRTIMER_MODE_ABS ) ; ctx -> moffs = ktime_mono_to_real ( 0 ) ; ufd = anon_inode_getfd ( \"[timerfd]\" , & timerfd_fops , ctx , O_RDWR | ( flags & TFD_SHARED_FCNTL_FLAGS ) ) ; if ( ufd < 0 ) kfree ( ctx ) ; return ufd ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> wqh ) ; spin_lock_init ( & ctx -> cancel_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8dx_bool_decoder_fill ( BOOL_DECODER * br ) { const unsigned char * bufptr = br -> user_buffer ; VP8_BD_VALUE value = br -> value ; int count = br -> count ; <S2SV_StartBug> int shift = VP8_BD_VALUE_SIZE - 8 - ( count + 8 ) ; <S2SV_EndBug> size_t bytes_left = br -> user_buffer_end - bufptr ; size_t bits_left = bytes_left * CHAR_BIT ; int x = ( int ) ( shift + CHAR_BIT - bits_left ) ; int loop_end = 0 ; unsigned char decrypted [ sizeof ( VP8_BD_VALUE ) + 1 ] ; if ( br -> decrypt_cb ) { <S2SV_StartBug> size_t n = bytes_left > sizeof ( decrypted ) ? sizeof ( decrypted ) : bytes_left ; <S2SV_EndBug> br -> decrypt_cb ( br -> decrypt_state , bufptr , decrypted , ( int ) n ) ; bufptr = decrypted ; } if ( x >= 0 ) { count += VP8_LOTS_OF_BITS ; loop_end = x ; } if ( x < 0 || bits_left ) { while ( shift >= loop_end ) { count += CHAR_BIT ; value |= ( VP8_BD_VALUE ) * bufptr << shift ; ++ bufptr ; ++ br -> user_buffer ; shift -= CHAR_BIT ; } } br -> value = value ; br -> count = count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = VP8_BD_VALUE_SIZE - CHAR_BIT <S2SV_ModEnd> - ( count <S2SV_ModStart> ( count + CHAR_BIT <S2SV_ModEnd> ) ; size_t <S2SV_ModStart> size_t n = MIN ( sizeof ( decrypted ) , bytes_left ) <S2SV_ModEnd> ; br ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8630\n\n```\nCWE-000 kadm5_ret_t kadm5_modify_principal ( void * server_handle , kadm5_principal_ent_t entry , long mask ) { int ret , ret2 , i ; kadm5_policy_ent_rec pol ; krb5_boolean have_pol = FALSE ; krb5_db_entry * kdb ; krb5_tl_data * tl_data_orig ; osa_princ_ent_rec adb ; kadm5_server_handle_t handle = server_handle ; CHECK_HANDLE ( server_handle ) ; krb5_clear_error_message ( handle -> context ) ; <S2SV_StartBug> if ( ( mask & KADM5_PRINCIPAL ) || ( mask & KADM5_LAST_PWD_CHANGE ) || <S2SV_EndBug> ( mask & KADM5_MOD_TIME ) || ( mask & KADM5_MOD_NAME ) || ( mask & KADM5_MKVNO ) || ( mask & KADM5_AUX_ATTRIBUTES ) || ( mask & KADM5_KEY_DATA ) || ( mask & KADM5_LAST_SUCCESS ) || ( mask & KADM5_LAST_FAILED ) ) return KADM5_BAD_MASK ; if ( ( mask & ~ ALL_PRINC_MASK ) ) return KADM5_BAD_MASK ; <S2SV_StartBug> if ( ( mask & KADM5_POLICY ) && ( mask & KADM5_POLICY_CLR ) ) <S2SV_EndBug> return KADM5_BAD_MASK ; <S2SV_StartBug> if ( entry == ( kadm5_principal_ent_t ) NULL ) <S2SV_EndBug> return EINVAL ; if ( mask & KADM5_TL_DATA ) { tl_data_orig = entry -> tl_data ; while ( tl_data_orig ) { if ( tl_data_orig -> tl_data_type < 256 ) return KADM5_BAD_TL_TYPE ; tl_data_orig = tl_data_orig -> tl_data_next ; } } ret = kdb_get_entry ( handle , entry -> principal , & kdb , & adb ) ; if ( ret ) return ( ret ) ; if ( ( mask & KADM5_POLICY ) ) { ret = get_policy ( handle , entry -> policy , & pol , & have_pol ) ; if ( ret ) goto done ; adb . aux_attributes |= KADM5_POLICY ; if ( adb . policy ) free ( adb . policy ) ; adb . policy = strdup ( entry -> policy ) ; } if ( have_pol ) { if ( pol . pw_max_life ) { ret = krb5_dbe_lookup_last_pwd_change ( handle -> context , kdb , & ( kdb -> pw_expiration ) ) ; if ( ret ) goto done ; kdb -> pw_expiration += pol . pw_max_life ; } else { kdb -> pw_expiration = 0 ; } } if ( ( mask & KADM5_POLICY_CLR ) && ( adb . aux_attributes & KADM5_POLICY ) ) { free ( adb . policy ) ; adb . policy = NULL ; adb . aux_attributes &= ~ KADM5_POLICY ; kdb -> pw_expiration = 0 ; } if ( ( mask & KADM5_ATTRIBUTES ) ) kdb -> attributes = entry -> attributes ; if ( ( mask & KADM5_MAX_LIFE ) ) kdb -> max_life = entry -> max_life ; if ( ( mask & KADM5_PRINC_EXPIRE_TIME ) ) kdb -> expiration = entry -> princ_expire_time ; if ( mask & KADM5_PW_EXPIRATION ) kdb -> pw_expiration = entry -> pw_expiration ; if ( mask & KADM5_MAX_RLIFE ) kdb -> max_renewable_life = entry -> max_renewable_life ; if ( ( mask & KADM5_KVNO ) ) { for ( i = 0 ; i < kdb -> n_key_data ; i ++ ) kdb -> key_data [ i ] . key_data_kvno = entry -> kvno ; } if ( mask & KADM5_TL_DATA ) { krb5_tl_data * tl ; for ( tl = entry -> tl_data ; tl ; tl = tl -> tl_data_next ) { ret = krb5_dbe_update_tl_data ( handle -> context , kdb , tl ) ; if ( ret ) { goto done ; } } } if ( mask & KADM5_FAIL_AUTH_COUNT ) { if ( entry -> fail_auth_count != 0 ) { ret = KADM5_BAD_SERVER_PARAMS ; goto done ; } kdb -> fail_auth_count = 0 ; } kdb -> mask = mask ; ret = k5_kadm5_hook_modify ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_PRECOMMIT , entry , mask ) ; if ( ret ) goto done ; ret = kdb_put_entry ( handle , kdb , & adb ) ; if ( ret ) goto done ; ( void ) k5_kadm5_hook_modify ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_POSTCOMMIT , entry , mask ) ; ret = KADM5_OK ; done : if ( have_pol ) { ret2 = kadm5_free_policy_ent ( handle -> lhandle , & pol ) ; ret = ret ? ret : ret2 ; } kdb_free_entry ( handle , kdb , & adb ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( entry == NULL ) return EINVAL ; if ( <S2SV_ModStart> KADM5_POLICY ) && entry -> policy == NULL <S2SV_ModEnd> ) return KADM5_BAD_MASK <S2SV_ModStart> ; if ( ( mask & KADM5_POLICY ) && ( mask & KADM5_POLICY_CLR ) ) return KADM5_BAD_MASK <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t coapClientWriteBody ( CoapClientRequest * request , const void * data , size_t length , size_t * written , bool_t last ) { error_t error ; size_t n ; uint32_t value ; uint32_t blockPos ; uint32_t blockSzx ; size_t payloadLen ; const uint8_t * payload ; CoapMessage * requestMsg ; CoapMessage * responseMsg ; CoapCode responseCode ; error = NO_ERROR ; if ( written != NULL ) * written = 0 ; while ( length > 0 || last ) { requestMsg = coapClientGetRequestMessage ( request ) ; error = coapGetUintOption ( requestMsg , COAP_OPT_BLOCK1 , 0 , & value ) ; if ( ! error ) { blockPos = COAP_GET_BLOCK_POS ( value ) ; blockSzx = COAP_GET_BLOCK_SZX ( value ) ; } else { blockPos = 0 ; blockSzx = request -> txBlockSzx ; } error = coapClientGetPayload ( requestMsg , & payload , & payloadLen ) ; if ( error ) break ; if ( length > 0 && payloadLen < COAP_GET_BLOCK_SIZE ( blockSzx ) ) { n = MIN ( length , COAP_GET_BLOCK_SIZE ( blockSzx ) - payloadLen ) ; error = coapClientWritePayload ( requestMsg , data , n ) ; if ( error ) break ; data = ( uint8_t * ) data + n ; length -= n ; if ( written != NULL ) * written += n ; } else { if ( blockPos > 0 || length > 0 || ! last ) { COAP_SET_BLOCK_NUM ( value , blockPos >> ( blockSzx + 4 ) ) ; if ( length == 0 && last ) <S2SV_StartBug> COAP_SET_BLOCK_M ( value , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> else <S2SV_EndBug> <S2SV_StartBug> COAP_SET_BLOCK_M ( value , 1 ) ; <S2SV_EndBug> COAP_SET_BLOCK_SZX ( value , blockSzx ) ; error = coapClientSetUintOption ( requestMsg , COAP_OPT_BLOCK1 , 0 , value ) ; if ( error ) break ; } if ( length == 0 && last ) { if ( request -> rxBlockSzx < COAP_BLOCK_SIZE_RESERVED ) { COAP_SET_BLOCK_NUM ( value , 0 ) ; COAP_SET_BLOCK_M ( value , 0 ) ; COAP_SET_BLOCK_SZX ( value , request -> rxBlockSzx ) ; error = coapClientSetUintOption ( requestMsg , COAP_OPT_BLOCK2 , 0 , value ) ; if ( error ) break ; } } error = coapClientSendRequest ( request , NULL , NULL ) ; if ( error ) break ; responseMsg = coapClientGetResponseMessage ( request ) ; error = coapClientGetResponseCode ( responseMsg , & responseCode ) ; if ( error ) break ; if ( COAP_GET_CODE_CLASS ( responseCode ) != COAP_CODE_CLASS_SUCCESS ) { error = ERROR_INVALID_STATUS ; break ; } if ( blockPos > 0 || length > 0 || ! last ) { error = coapClientGetUintOption ( responseMsg , COAP_OPT_BLOCK1 , 0 , & value ) ; if ( error ) break ; if ( COAP_GET_BLOCK_SZX ( value ) >= COAP_BLOCK_SIZE_RESERVED ) { error = ERROR_FAILURE ; break ; } if ( COAP_GET_BLOCK_POS ( value ) != blockPos ) { error = ERROR_FAILURE ; break ; } if ( blockSzx > COAP_GET_BLOCK_SZX ( value ) ) blockSzx = COAP_GET_BLOCK_SZX ( value ) ; blockPos += COAP_GET_BLOCK_SIZE ( blockSzx ) ; COAP_SET_BLOCK_NUM ( value , blockPos >> ( blockSzx + 4 ) ) ; COAP_SET_BLOCK_SZX ( value , blockSzx ) ; error = coapClientSetUintOption ( requestMsg , COAP_OPT_BLOCK1 , 0 , value ) ; if ( error ) break ; } error = coapClientSetPayload ( requestMsg , NULL , 0 ) ; if ( error ) break ; if ( length == 0 && last ) { error = coapClientDeleteOption ( requestMsg , COAP_OPT_BLOCK1 , 0 ) ; break ; } } } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && last ) { <S2SV_ModStart> 0 ) ; } else { <S2SV_ModEnd> COAP_SET_BLOCK_M ( value <S2SV_ModStart> 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7407\n\n```\nCWE-119 void ourWriteOut ( CURL * curl , struct OutStruct * outs , const char * writeinfo ) { FILE * stream = stdout ; const char * ptr = writeinfo ; char * stringp = NULL ; long longinfo ; double doubleinfo ; while ( ptr && * ptr ) { <S2SV_StartBug> if ( '%' == * ptr ) { <S2SV_EndBug> if ( '%' == ptr [ 1 ] ) { fputc ( '%' , stream ) ; ptr += 2 ; } else { char * end ; char keepit ; int i ; if ( '{' == ptr [ 1 ] ) { bool match = FALSE ; end = strchr ( ptr , '}' ) ; ptr += 2 ; if ( ! end ) { fputs ( \"%{\" , stream ) ; continue ; } keepit = * end ; * end = 0 ; for ( i = 0 ; replacements [ i ] . name ; i ++ ) { if ( curl_strequal ( ptr , replacements [ i ] . name ) ) { match = TRUE ; switch ( replacements [ i ] . id ) { case VAR_EFFECTIVE_URL : if ( ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_EFFECTIVE_URL , & stringp ) ) && stringp ) fputs ( stringp , stream ) ; break ; case VAR_HTTP_CODE : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_RESPONSE_CODE , & longinfo ) ) fprintf ( stream , \"%03ld\" , longinfo ) ; break ; case VAR_HTTP_CODE_PROXY : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_HTTP_CONNECTCODE , & longinfo ) ) fprintf ( stream , \"%03ld\" , longinfo ) ; break ; case VAR_HEADER_SIZE : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_HEADER_SIZE , & longinfo ) ) fprintf ( stream , \"%ld\" , longinfo ) ; break ; case VAR_REQUEST_SIZE : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_REQUEST_SIZE , & longinfo ) ) fprintf ( stream , \"%ld\" , longinfo ) ; break ; case VAR_NUM_CONNECTS : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_NUM_CONNECTS , & longinfo ) ) fprintf ( stream , \"%ld\" , longinfo ) ; break ; case VAR_REDIRECT_COUNT : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_REDIRECT_COUNT , & longinfo ) ) fprintf ( stream , \"%ld\" , longinfo ) ; break ; case VAR_REDIRECT_TIME : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_REDIRECT_TIME , & doubleinfo ) ) fprintf ( stream , \"%.6f\" , doubleinfo ) ; break ; case VAR_TOTAL_TIME : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_TOTAL_TIME , & doubleinfo ) ) fprintf ( stream , \"%.6f\" , doubleinfo ) ; break ; case VAR_NAMELOOKUP_TIME : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_NAMELOOKUP_TIME , & doubleinfo ) ) fprintf ( stream , \"%.6f\" , doubleinfo ) ; break ; case VAR_CONNECT_TIME : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_CONNECT_TIME , & doubleinfo ) ) fprintf ( stream , \"%.6f\" , doubleinfo ) ; break ; case VAR_APPCONNECT_TIME : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_APPCONNECT_TIME , & doubleinfo ) ) fprintf ( stream , \"%.6f\" , doubleinfo ) ; break ; case VAR_PRETRANSFER_TIME : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_PRETRANSFER_TIME , & doubleinfo ) ) fprintf ( stream , \"%.6f\" , doubleinfo ) ; break ; case VAR_STARTTRANSFER_TIME : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_STARTTRANSFER_TIME , & doubleinfo ) ) fprintf ( stream , \"%.6f\" , doubleinfo ) ; break ; case VAR_SIZE_UPLOAD : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_SIZE_UPLOAD , & doubleinfo ) ) fprintf ( stream , \"%.0f\" , doubleinfo ) ; break ; case VAR_SIZE_DOWNLOAD : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_SIZE_DOWNLOAD , & doubleinfo ) ) fprintf ( stream , \"%.0f\" , doubleinfo ) ; break ; case VAR_SPEED_DOWNLOAD : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_SPEED_DOWNLOAD , & doubleinfo ) ) fprintf ( stream , \"%.3f\" , doubleinfo ) ; break ; case VAR_SPEED_UPLOAD : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_SPEED_UPLOAD , & doubleinfo ) ) fprintf ( stream , \"%.3f\" , doubleinfo ) ; break ; case VAR_CONTENT_TYPE : if ( ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_CONTENT_TYPE , & stringp ) ) && stringp ) fputs ( stringp , stream ) ; break ; case VAR_FTP_ENTRY_PATH : if ( ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_FTP_ENTRY_PATH , & stringp ) ) && stringp ) fputs ( stringp , stream ) ; break ; case VAR_REDIRECT_URL : if ( ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_REDIRECT_URL , & stringp ) ) && stringp ) fputs ( stringp , stream ) ; break ; case VAR_SSL_VERIFY_RESULT : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_SSL_VERIFYRESULT , & longinfo ) ) fprintf ( stream , \"%ld\" , longinfo ) ; break ; case VAR_PROXY_SSL_VERIFY_RESULT : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_PROXY_SSL_VERIFYRESULT , & longinfo ) ) fprintf ( stream , \"%ld\" , longinfo ) ; break ; case VAR_EFFECTIVE_FILENAME : if ( outs -> filename ) fprintf ( stream , \"%s\" , outs -> filename ) ; break ; case VAR_PRIMARY_IP : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_PRIMARY_IP , & stringp ) ) fprintf ( stream , \"%s\" , stringp ) ; break ; case VAR_PRIMARY_PORT : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_PRIMARY_PORT , & longinfo ) ) fprintf ( stream , \"%ld\" , longinfo ) ; break ; case VAR_LOCAL_IP : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_LOCAL_IP , & stringp ) ) fprintf ( stream , \"%s\" , stringp ) ; break ; case VAR_LOCAL_PORT : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_LOCAL_PORT , & longinfo ) ) fprintf ( stream , \"%ld\" , longinfo ) ; break ; case VAR_HTTP_VERSION : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_HTTP_VERSION , & longinfo ) ) { const char * version = \"0\" ; switch ( longinfo ) { case CURL_HTTP_VERSION_1_0 : version = \"1.0\" ; break ; case CURL_HTTP_VERSION_1_1 : version = \"1.1\" ; break ; case CURL_HTTP_VERSION_2_0 : version = \"2\" ; break ; } fprintf ( stream , version ) ; } break ; case VAR_SCHEME : if ( CURLE_OK == curl_easy_getinfo ( curl , CURLINFO_SCHEME , & stringp ) ) fprintf ( stream , \"%s\" , stringp ) ; break ; default : break ; } break ; } } if ( ! match ) { fprintf ( stderr , \"curl:<S2SV_blank>unknown<S2SV_blank>--write-out<S2SV_blank>variable:<S2SV_blank>\\'%s\\'\\\\n\" , ptr ) ; } ptr = end + 1 ; * end = keepit ; } else { fputc ( '%' , stream ) ; fputc ( ptr [ 1 ] , stream ) ; ptr += 2 ; } } } else if ( '\\\\\\\\' == * ptr ) { switch ( ptr [ 1 ] ) { case 'r' : fputc ( '\\\\r' , stream ) ; break ; case 'n' : fputc ( '\\\\n' , stream ) ; break ; case 't' : fputc ( '\\\\t' , stream ) ; break ; default : fputc ( * ptr , stream ) ; fputc ( ptr [ 1 ] , stream ) ; break ; } ptr += 2 ; } else { fputc ( * ptr , stream ) ; ptr ++ ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == * ptr && ptr [ 1 ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9717\n\n```\nCWE-284 static void mntput_no_expire ( struct mount * mnt ) { rcu_read_lock ( ) ; mnt_add_count ( mnt , - 1 ) ; if ( likely ( mnt -> mnt_ns ) ) { rcu_read_unlock ( ) ; return ; } lock_mount_hash ( ) ; if ( mnt_get_count ( mnt ) ) { rcu_read_unlock ( ) ; unlock_mount_hash ( ) ; return ; } if ( unlikely ( mnt -> mnt . mnt_flags & MNT_DOOMED ) ) { rcu_read_unlock ( ) ; unlock_mount_hash ( ) ; return ; } mnt -> mnt . mnt_flags |= MNT_DOOMED ; rcu_read_unlock ( ) ; list_del ( & mnt -> mnt_instance ) ; <S2SV_StartBug> unlock_mount_hash ( ) ; <S2SV_EndBug> if ( likely ( ! ( mnt -> mnt . mnt_flags & MNT_INTERNAL ) ) ) { struct task_struct * task = current ; if ( likely ( ! ( task -> flags & PF_KTHREAD ) ) ) { init_task_work ( & mnt -> mnt_rcu , __cleanup_mnt ) ; if ( ! task_work_add ( task , & mnt -> mnt_rcu , true ) ) return ; } if ( llist_add ( & mnt -> mnt_llist , & delayed_mntput_list ) ) schedule_delayed_work ( & delayed_mntput_work , 1 ) ; return ; } cleanup_mnt ( mnt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mnt_instance ) ; if ( unlikely ( ! list_empty ( & mnt -> mnt_mounts ) ) ) { struct mount * p , * tmp ; list_for_each_entry_safe ( p , tmp , & mnt -> mnt_mounts , mnt_child ) { umount_mnt ( p ) ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16532\n\n```\nCWE-476 static int get_endpoints ( struct usbtest_dev * dev , struct usb_interface * intf ) { int tmp ; struct usb_host_interface * alt ; struct usb_host_endpoint * in , * out ; struct usb_host_endpoint * iso_in , * iso_out ; struct usb_host_endpoint * int_in , * int_out ; struct usb_device * udev ; for ( tmp = 0 ; tmp < intf -> num_altsetting ; tmp ++ ) { unsigned ep ; in = out = NULL ; iso_in = iso_out = NULL ; int_in = int_out = NULL ; alt = intf -> altsetting + tmp ; if ( override_alt >= 0 && override_alt != alt -> desc . bAlternateSetting ) continue ; for ( ep = 0 ; ep < alt -> desc . bNumEndpoints ; ep ++ ) { struct usb_host_endpoint * e ; int edi ; e = alt -> endpoint + ep ; edi = usb_endpoint_dir_in ( & e -> desc ) ; switch ( usb_endpoint_type ( & e -> desc ) ) { case USB_ENDPOINT_XFER_BULK : endpoint_update ( edi , & in , & out , e ) ; continue ; case USB_ENDPOINT_XFER_INT : if ( dev -> info -> intr ) endpoint_update ( edi , & int_in , & int_out , e ) ; continue ; case USB_ENDPOINT_XFER_ISOC : if ( dev -> info -> iso ) endpoint_update ( edi , & iso_in , & iso_out , e ) ; default : continue ; } } if ( ( in && out ) || iso_in || iso_out || int_in || int_out ) goto found ; } return - EINVAL ; found : udev = testdev_to_usbdev ( dev ) ; dev -> info -> alt = alt -> desc . bAlternateSetting ; if ( alt -> desc . bAlternateSetting != 0 ) { tmp = usb_set_interface ( udev , alt -> desc . bInterfaceNumber , alt -> desc . bAlternateSetting ) ; if ( tmp < 0 ) return tmp ; } <S2SV_StartBug> if ( in ) { <S2SV_EndBug> dev -> in_pipe = usb_rcvbulkpipe ( udev , in -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; <S2SV_StartBug> dev -> out_pipe = usb_sndbulkpipe ( udev , <S2SV_EndBug> out -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( iso_in ) { dev -> iso_in = & iso_in -> desc ; dev -> in_iso_pipe = usb_rcvisocpipe ( udev , iso_in -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; } if ( iso_out ) { dev -> iso_out = & iso_out -> desc ; dev -> out_iso_pipe = usb_sndisocpipe ( udev , iso_out -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; } if ( int_in ) { dev -> int_in = & int_in -> desc ; dev -> in_int_pipe = usb_rcvintpipe ( udev , int_in -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; } if ( int_out ) { dev -> int_out = & int_out -> desc ; dev -> out_int_pipe = usb_sndintpipe ( udev , int_out -> desc . bEndpointAddress & USB_ENDPOINT_NUMBER_MASK ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( in ) <S2SV_ModEnd> dev -> in_pipe <S2SV_ModStart> USB_ENDPOINT_NUMBER_MASK ) ; if ( out ) <S2SV_ModStart> USB_ENDPOINT_NUMBER_MASK ) ; <S2SV_ModEnd> if ( iso_in\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7863\n\n```\nCWE-787 static int decode_frame_common ( AVCodecContext * avctx , PNGDecContext * s , AVFrame * p , AVPacket * avpkt ) { AVDictionary * metadata = NULL ; uint32_t tag , length ; int decode_next_dat = 0 ; int ret ; for ( ; ; ) { length = bytestream2_get_bytes_left ( & s -> gb ) ; if ( length <= 0 ) { if ( avctx -> codec_id == AV_CODEC_ID_PNG && avctx -> skip_frame == AVDISCARD_ALL ) { av_frame_set_metadata ( p , metadata ) ; return 0 ; } if ( CONFIG_APNG_DECODER && avctx -> codec_id == AV_CODEC_ID_APNG && length == 0 ) { if ( ! ( s -> state & PNG_IDAT ) ) return 0 ; else goto exit_loop ; } av_log ( avctx , AV_LOG_ERROR , \"%d<S2SV_blank>bytes<S2SV_blank>left\\\\n\" , length ) ; if ( s -> state & PNG_ALLIMAGE && avctx -> strict_std_compliance <= FF_COMPLIANCE_NORMAL ) goto exit_loop ; ret = AVERROR_INVALIDDATA ; goto fail ; } length = bytestream2_get_be32 ( & s -> gb ) ; if ( length > 0x7fffffff || length > bytestream2_get_bytes_left ( & s -> gb ) ) { av_log ( avctx , AV_LOG_ERROR , \"chunk<S2SV_blank>too<S2SV_blank>big\\\\n\" ) ; ret = AVERROR_INVALIDDATA ; goto fail ; } tag = bytestream2_get_le32 ( & s -> gb ) ; if ( avctx -> debug & FF_DEBUG_STARTCODE ) av_log ( avctx , AV_LOG_DEBUG , \"png:<S2SV_blank>tag=%c%c%c%c<S2SV_blank>length=%u\\\\n\" , ( tag & 0xff ) , ( ( tag >> 8 ) & 0xff ) , ( ( tag >> 16 ) & 0xff ) , ( ( tag >> 24 ) & 0xff ) , length ) ; if ( avctx -> codec_id == AV_CODEC_ID_PNG && avctx -> skip_frame == AVDISCARD_ALL ) { switch ( tag ) { case MKTAG ( 'I' , 'H' , 'D' , 'R' ) : case MKTAG ( 'p' , 'H' , 'Y' , 's' ) : case MKTAG ( 't' , 'E' , 'X' , 't' ) : case MKTAG ( 'I' , 'D' , 'A' , 'T' ) : case MKTAG ( 't' , 'R' , 'N' , 'S' ) : break ; default : goto skip_tag ; } } switch ( tag ) { case MKTAG ( 'I' , 'H' , 'D' , 'R' ) : if ( ( ret = decode_ihdr_chunk ( avctx , s , length ) ) < 0 ) goto fail ; break ; case MKTAG ( 'p' , 'H' , 'Y' , 's' ) : if ( ( ret = decode_phys_chunk ( avctx , s ) ) < 0 ) goto fail ; break ; case MKTAG ( 'f' , 'c' , 'T' , 'L' ) : if ( ! CONFIG_APNG_DECODER || avctx -> codec_id != AV_CODEC_ID_APNG ) goto skip_tag ; if ( ( ret = decode_fctl_chunk ( avctx , s , length ) ) < 0 ) goto fail ; decode_next_dat = 1 ; break ; case MKTAG ( 'f' , 'd' , 'A' , 'T' ) : if ( ! CONFIG_APNG_DECODER || avctx -> codec_id != AV_CODEC_ID_APNG ) goto skip_tag ; if ( ! decode_next_dat ) { ret = AVERROR_INVALIDDATA ; goto fail ; } bytestream2_get_be32 ( & s -> gb ) ; length -= 4 ; case MKTAG ( 'I' , 'D' , 'A' , 'T' ) : if ( CONFIG_APNG_DECODER && avctx -> codec_id == AV_CODEC_ID_APNG && ! decode_next_dat ) goto skip_tag ; if ( ( ret = decode_idat_chunk ( avctx , s , length , p ) ) < 0 ) goto fail ; break ; case MKTAG ( 'P' , 'L' , 'T' , 'E' ) : if ( decode_plte_chunk ( avctx , s , length ) < 0 ) goto skip_tag ; break ; case MKTAG ( 't' , 'R' , 'N' , 'S' ) : if ( decode_trns_chunk ( avctx , s , length ) < 0 ) goto skip_tag ; break ; case MKTAG ( 't' , 'E' , 'X' , 't' ) : if ( decode_text_chunk ( s , length , 0 , & metadata ) < 0 ) av_log ( avctx , AV_LOG_WARNING , \"Broken<S2SV_blank>tEXt<S2SV_blank>chunk\\\\n\" ) ; bytestream2_skip ( & s -> gb , length + 4 ) ; break ; case MKTAG ( 'z' , 'T' , 'X' , 't' ) : if ( decode_text_chunk ( s , length , 1 , & metadata ) < 0 ) av_log ( avctx , AV_LOG_WARNING , \"Broken<S2SV_blank>zTXt<S2SV_blank>chunk\\\\n\" ) ; bytestream2_skip ( & s -> gb , length + 4 ) ; break ; case MKTAG ( 's' , 'T' , 'E' , 'R' ) : { int mode = bytestream2_get_byte ( & s -> gb ) ; AVStereo3D * stereo3d = av_stereo3d_create_side_data ( p ) ; if ( ! stereo3d ) goto fail ; if ( mode == 0 || mode == 1 ) { stereo3d -> type = AV_STEREO3D_SIDEBYSIDE ; stereo3d -> flags = mode ? 0 : AV_STEREO3D_FLAG_INVERT ; } else { av_log ( avctx , AV_LOG_WARNING , \"Unknown<S2SV_blank>value<S2SV_blank>in<S2SV_blank>sTER<S2SV_blank>chunk<S2SV_blank>(%d)\\\\n\" , mode ) ; } bytestream2_skip ( & s -> gb , 4 ) ; break ; } case MKTAG ( 'I' , 'E' , 'N' , 'D' ) : if ( ! ( s -> state & PNG_ALLIMAGE ) ) av_log ( avctx , AV_LOG_ERROR , \"IEND<S2SV_blank>without<S2SV_blank>all<S2SV_blank>image\\\\n\" ) ; if ( ! ( s -> state & ( PNG_ALLIMAGE | PNG_IDAT ) ) ) { ret = AVERROR_INVALIDDATA ; goto fail ; } bytestream2_skip ( & s -> gb , 4 ) ; goto exit_loop ; default : skip_tag : bytestream2_skip ( & s -> gb , length + 4 ) ; break ; } } exit_loop : if ( avctx -> codec_id == AV_CODEC_ID_PNG && avctx -> skip_frame == AVDISCARD_ALL ) { av_frame_set_metadata ( p , metadata ) ; return 0 ; } if ( s -> bits_per_pixel <= 4 ) handle_small_bpp ( s , p ) ; if ( s -> has_trns && s -> color_type != PNG_COLOR_TYPE_PALETTE ) { size_t byte_depth = s -> bit_depth > 8 ? 2 : 1 ; size_t raw_bpp = s -> bpp - byte_depth ; unsigned x , y ; <S2SV_StartBug> for ( y = 0 ; y < s -> height ; ++ y ) { <S2SV_EndBug> uint8_t * row = & s -> image_buf [ s -> image_linesize * y ] ; for ( x = s -> width ; x > 0 ; -- x ) { uint8_t * pixel = & row [ s -> bpp * ( x - 1 ) ] ; memmove ( pixel , & row [ raw_bpp * ( x - 1 ) ] , raw_bpp ) ; if ( ! memcmp ( pixel , s -> transparent_color_be , raw_bpp ) ) { memset ( & pixel [ raw_bpp ] , 0 , byte_depth ) ; } else { memset ( & pixel [ raw_bpp ] , 0xff , byte_depth ) ; } } } } if ( s -> last_picture . f -> data [ 0 ] ) { if ( ! ( avpkt -> flags & AV_PKT_FLAG_KEY ) && avctx -> codec_tag != AV_RL32 ( \"MPNG\" ) && s -> last_picture . f -> width == p -> width && s -> last_picture . f -> height == p -> height && s -> last_picture . f -> format == p -> format ) { if ( CONFIG_PNG_DECODER && avctx -> codec_id != AV_CODEC_ID_APNG ) handle_p_frame_png ( s , p ) ; else if ( CONFIG_APNG_DECODER && avctx -> codec_id == AV_CODEC_ID_APNG && ( ret = handle_p_frame_apng ( avctx , s , p ) ) < 0 ) goto fail ; } } ff_thread_report_progress ( & s -> picture , INT_MAX , 0 ) ; ff_thread_report_progress ( & s -> previous_picture , INT_MAX , 0 ) ; av_frame_set_metadata ( p , metadata ) ; metadata = NULL ; return 0 ; fail : av_dict_free ( & metadata ) ; ff_thread_report_progress ( & s -> picture , INT_MAX , 0 ) ; ff_thread_report_progress ( & s -> previous_picture , INT_MAX , 0 ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , y ; av_assert0 ( s -> bit_depth > 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8539\n\n```\nCWE-264 int user_update ( struct key * key , struct key_preparsed_payload * prep ) { struct user_key_payload * upayload , * zap ; size_t datalen = prep -> datalen ; int ret ; ret = - EINVAL ; if ( datalen <= 0 || datalen > 32767 || ! prep -> data ) goto error ; ret = - ENOMEM ; upayload = kmalloc ( sizeof ( * upayload ) + datalen , GFP_KERNEL ) ; if ( ! upayload ) goto error ; upayload -> datalen = datalen ; memcpy ( upayload -> data , prep -> data , datalen ) ; zap = upayload ; ret = key_payload_reserve ( key , datalen ) ; if ( ret == 0 ) { <S2SV_StartBug> zap = key -> payload . data [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> rcu_assign_keypointer ( key , upayload ) ; <S2SV_EndBug> key -> expiry = 0 ; } if ( zap ) kfree_rcu ( zap , rcu ) ; error : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( ! test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) <S2SV_ModStart> 0 ] ; else zap = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6353\n\n```\nCWE-415 int sctp_do_peeloff ( struct sock * sk , sctp_assoc_t id , struct socket * * sockp ) { struct sctp_association * asoc = sctp_id2assoc ( sk , id ) ; struct sctp_sock * sp = sctp_sk ( sk ) ; struct socket * sock ; int err = 0 ; if ( ! asoc ) <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> if ( ! sctp_style ( sk , UDP ) ) return - EINVAL ; err = sock_create ( sk -> sk_family , SOCK_SEQPACKET , IPPROTO_SCTP , & sock ) ; if ( err < 0 ) return err ; sctp_copy_sock ( sock -> sk , sk , asoc ) ; sp -> pf -> to_sk_daddr ( & asoc -> peer . primary_addr , sk ) ; sctp_sock_migrate ( sk , sock -> sk , asoc , SCTP_SOCKET_UDP_HIGH_BANDWIDTH ) ; * sockp = sock ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - EINVAL ; if ( waitqueue_active ( & asoc -> wait ) ) return - EBUSY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20217\n\n```\nCWE-617 static krb5_error_code s4u_identify_user ( krb5_context context , krb5_creds * in_creds , krb5_data * subject_cert , krb5_principal * canon_user ) { krb5_error_code code ; krb5_preauthtype ptypes [ 1 ] = { KRB5_PADATA_S4U_X509_USER } ; krb5_creds creds ; int use_master = 0 ; krb5_get_init_creds_opt * opts = NULL ; krb5_principal_data client ; krb5_s4u_userid userid ; * canon_user = NULL ; if ( in_creds -> client == NULL && subject_cert == NULL ) { return EINVAL ; } if ( in_creds -> client != NULL && in_creds -> client -> type != KRB5_NT_ENTERPRISE_PRINCIPAL ) { int anonymous ; anonymous = krb5_principal_compare ( context , in_creds -> client , krb5_anonymous_principal ( ) ) ; return krb5_copy_principal ( context , anonymous ? in_creds -> server : in_creds -> client , canon_user ) ; } memset ( & creds , 0 , sizeof ( creds ) ) ; memset ( & userid , 0 , sizeof ( userid ) ) ; if ( subject_cert != NULL ) userid . subject_cert = * subject_cert ; code = krb5_get_init_creds_opt_alloc ( context , & opts ) ; if ( code != 0 ) goto cleanup ; krb5_get_init_creds_opt_set_tkt_life ( opts , 15 ) ; krb5_get_init_creds_opt_set_renew_life ( opts , 0 ) ; krb5_get_init_creds_opt_set_forwardable ( opts , 0 ) ; krb5_get_init_creds_opt_set_proxiable ( opts , 0 ) ; krb5_get_init_creds_opt_set_canonicalize ( opts , 1 ) ; krb5_get_init_creds_opt_set_preauth_list ( opts , ptypes , 1 ) ; if ( in_creds -> client != NULL ) { client = * in_creds -> client ; client . realm = in_creds -> server -> realm ; } else { client . magic = KV5M_PRINCIPAL ; client . realm = in_creds -> server -> realm ; client . data = NULL ; client . length = 0 ; client . type = KRB5_NT_ENTERPRISE_PRINCIPAL ; } code = k5_get_init_creds ( context , & creds , & client , NULL , NULL , 0 , NULL , opts , krb5_get_as_key_noop , & userid , & use_master , NULL ) ; <S2SV_StartBug> if ( code == 0 || code == KRB5_PREAUTH_FAILED ) { <S2SV_EndBug> * canon_user = userid . user ; userid . user = NULL ; code = 0 ; } cleanup : krb5_free_cred_contents ( context , & creds ) ; if ( opts != NULL ) krb5_get_init_creds_opt_free ( context , opts ) ; if ( userid . user != NULL ) krb5_free_principal ( context , userid . user ) ; return code ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( ! code <S2SV_ModEnd> || code == <S2SV_ModStart> code == KRB5_PREAUTH_FAILED || code == KRB5KDC_ERR_KEY_EXP\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 static int snd_ctl_elem_user_get ( struct snd_kcontrol * kcontrol , struct snd_ctl_elem_value * ucontrol ) { struct user_element * ue = kcontrol -> private_data ; <S2SV_StartBug> memcpy ( & ucontrol -> value , ue -> elem_data , ue -> elem_data_size ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private_data ; mutex_lock ( & ue -> card -> user_ctl_lock ) ; <S2SV_ModStart> elem_data_size ) ; mutex_unlock ( & ue -> card -> user_ctl_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 int touch ( const char * path ) { <S2SV_StartBug> return touch_file ( path , false , USEC_INFINITY , UID_INVALID , GID_INVALID , 0 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , GID_INVALID , MODE_INVALID <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static void nfs4_return_incompatible_delegation ( struct inode * inode , mode_t open_flags ) <S2SV_EndBug> { struct nfs_delegation * delegation ; rcu_read_lock ( ) ; delegation = rcu_dereference ( NFS_I ( inode ) -> delegation ) ; <S2SV_StartBug> if ( delegation == NULL || ( delegation -> type & open_flags ) == open_flags ) { <S2SV_EndBug> rcu_read_unlock ( ) ; return ; } rcu_read_unlock ( ) ; nfs_inode_return_delegation ( inode ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * inode , fmode_t fmode <S2SV_ModEnd> ) { struct <S2SV_ModStart> -> type & fmode ) == fmode <S2SV_ModEnd> ) { rcu_read_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11593\n\n```\nCWE-787 <S2SV_StartBug> void jslTokenAsString ( int token , char * str , size_t len ) { <S2SV_EndBug> if ( token > 32 && token < 128 ) { assert ( len >= 4 ) ; str [ 0 ] = '\\\\'' ; str [ 1 ] = ( char ) token ; str [ 2 ] = '\\\\'' ; str [ 3 ] = 0 ; return ; } switch ( token ) { <S2SV_StartBug> case LEX_EOF : strncpy ( str , \"EOF\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_ID : strncpy ( str , \"ID\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_INT : strncpy ( str , \"INT\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_FLOAT : strncpy ( str , \"FLOAT\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_STR : strncpy ( str , \"STRING\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_UNFINISHED_STR : strncpy ( str , \"UNFINISHED<S2SV_blank>STRING\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_TEMPLATE_LITERAL : strncpy ( str , \"TEMPLATE<S2SV_blank>LITERAL\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_UNFINISHED_TEMPLATE_LITERAL : strncpy ( str , \"UNFINISHED<S2SV_blank>TEMPLATE<S2SV_blank>LITERAL\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_REGEX : strncpy ( str , \"REGEX\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_UNFINISHED_REGEX : strncpy ( str , \"UNFINISHED<S2SV_blank>REGEX\" , len ) ; return ; <S2SV_EndBug> <S2SV_StartBug> case LEX_UNFINISHED_COMMENT : strncpy ( str , \"UNFINISHED<S2SV_blank>COMMENT\" , len ) ; return ; <S2SV_EndBug> } if ( token >= _LEX_OPERATOR_START && token < _LEX_R_LIST_END ) { const char tokenNames [ ] = \"==\\\\0\" \"===\\\\0\" \"!=\\\\0\" \"!==\\\\0\" \"<=\\\\0\" \"<<\\\\0\" \"<<=\\\\0\" \">=\\\\0\" \">>\\\\0\" \">>>\\\\0\" \">>=\\\\0\" \">>>=\\\\0\" \"+=\\\\0\" \"-=\\\\0\" \"++\\\\0\" \"--\\\\0\" \"*=\\\\0\" \"/=\\\\0\" \"%=\\\\0\" \"&=\\\\0\" \"&&\\\\0\" \"|=\\\\0\" \"||\\\\0\" \"^=\\\\0\" \"=>\\\\0\" \"if\\\\0\" \"else\\\\0\" \"do\\\\0\" \"while\\\\0\" \"for\\\\0\" \"return\\\\0\" \"continue\\\\0\" \"function\\\\0\" \"return\\\\0\" \"var\\\\0\" \"let\\\\0\" \"const\\\\0\" \"this\\\\0\" \"throw\\\\0\" \"try\\\\0\" \"catch\\\\0\" \"finally\\\\0\" \"true\\\\0\" \"false\\\\0\" \"null\\\\0\" \"undefined\\\\0\" \"new\\\\0\" \"in\\\\0\" \"instanceof\\\\0\" \"switch\\\\0\" \"case\\\\0\" \"default\\\\0\" \"delete\\\\0\" \"typeof\\\\0\" \"void\\\\0\" \"debugger\\\\0\" \"class\\\\0\" \"extends\\\\0\" \"super\\\\0\" \"static\\\\0\" ; unsigned int p = 0 ; int n = token - _LEX_OPERATOR_START ; while ( n > 0 && p < sizeof ( tokenNames ) ) { while ( tokenNames [ p ] && p < sizeof ( tokenNames ) ) p ++ ; p ++ ; n -- ; } assert ( n == 0 ) ; <S2SV_StartBug> strncpy ( str , & tokenNames [ p ] , len ) ; <S2SV_EndBug> return ; } <S2SV_StartBug> assert ( len >= 10 ) ; <S2SV_EndBug> espruino_snprintf ( str , len , \"?[%d]\" , token ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) { assert ( len > 28 ) ; <S2SV_ModStart> case LEX_EOF : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"EOF\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_ID : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"ID\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_INT : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"INT\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_FLOAT : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"FLOAT\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_STR : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"STRING\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_UNFINISHED_STR : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"UNFINISHED<S2SV_blank>STRING\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_TEMPLATE_LITERAL : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"TEMPLATE<S2SV_blank>LITERAL\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_UNFINISHED_TEMPLATE_LITERAL : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"UNFINISHED<S2SV_blank>TEMPLATE<S2SV_blank>LITERAL\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_REGEX : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"REGEX\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_UNFINISHED_REGEX : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"UNFINISHED<S2SV_blank>REGEX\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> case LEX_UNFINISHED_COMMENT : strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> str , \"UNFINISHED<S2SV_blank>COMMENT\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> 0 ) ; strcpy <S2SV_ModEnd> ( str , <S2SV_ModStart> [ p ] <S2SV_ModEnd> ) ; return <S2SV_ModStart> return ; } <S2SV_ModEnd> espruino_snprintf ( str\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0587\n\n```\nCWE-119 IMPEG2D_ERROR_CODES_T impeg2d_dec_seq_hdr ( dec_state_t * ps_dec ) { stream_t * ps_stream ; ps_stream = & ps_dec -> s_bit_stream ; UWORD16 u2_height ; UWORD16 u2_width ; if ( impeg2d_bit_stream_nxt ( ps_stream , START_CODE_LEN ) != SEQUENCE_HEADER_CODE ) { impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; return IMPEG2D_FRM_HDR_START_CODE_NOT_FOUND ; } impeg2d_bit_stream_flush ( ps_stream , START_CODE_LEN ) ; u2_width = impeg2d_bit_stream_get ( ps_stream , 12 ) ; u2_height = impeg2d_bit_stream_get ( ps_stream , 12 ) ; if ( ( u2_width != ps_dec -> u2_horizontal_size ) || ( u2_height != ps_dec -> u2_vertical_size ) ) { if ( 0 == ps_dec -> u2_header_done ) { ps_dec -> u2_horizontal_size = u2_width ; ps_dec -> u2_vertical_size = u2_height ; if ( 0 == ps_dec -> u4_frm_buf_stride ) { ps_dec -> u4_frm_buf_stride = ( UWORD32 ) ( u2_width ) ; } } else { if ( ( u2_width > ps_dec -> u2_create_max_width ) || ( u2_height > ps_dec -> u2_create_max_height ) ) { IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS ; ps_dec -> u2_reinit_max_height = u2_height ; ps_dec -> u2_reinit_max_width = u2_width ; return e_error ; } else { return ( IMPEG2D_ERROR_CODES_T ) IVD_RES_CHANGED ; } } } if ( ( ps_dec -> u2_horizontal_size > ps_dec -> u2_create_max_width ) || ( ps_dec -> u2_vertical_size > ps_dec -> u2_create_max_height ) ) { IMPEG2D_ERROR_CODES_T e_error = IMPEG2D_UNSUPPORTED_DIMENSIONS ; <S2SV_StartBug> return SET_IVD_FATAL_ERROR ( e_error ) ; <S2SV_EndBug> } ps_dec -> u2_aspect_ratio_info = impeg2d_bit_stream_get ( ps_stream , 4 ) ; ps_dec -> u2_frame_rate_code = impeg2d_bit_stream_get ( ps_stream , 4 ) ; if ( ps_dec -> u2_frame_rate_code > MPEG2_MAX_FRAME_RATE_CODE ) { return IMPEG2D_FRM_HDR_DECODE_ERR ; } impeg2d_bit_stream_flush ( ps_stream , 18 ) ; GET_MARKER_BIT ( ps_dec , ps_stream ) ; impeg2d_bit_stream_flush ( ps_stream , 11 ) ; if ( impeg2d_bit_stream_get_bit ( ps_stream ) == 1 ) { UWORD16 i ; for ( i = 0 ; i < NUM_PELS_IN_BLOCK ; i ++ ) { ps_dec -> au1_intra_quant_matrix [ gau1_impeg2_inv_scan_zig_zag [ i ] ] = ( UWORD8 ) impeg2d_bit_stream_get ( ps_stream , 8 ) ; } } else { memcpy ( ps_dec -> au1_intra_quant_matrix , gau1_impeg2_intra_quant_matrix_default , NUM_PELS_IN_BLOCK ) ; } if ( impeg2d_bit_stream_get_bit ( ps_stream ) == 1 ) { UWORD16 i ; for ( i = 0 ; i < NUM_PELS_IN_BLOCK ; i ++ ) { ps_dec -> au1_inter_quant_matrix [ gau1_impeg2_inv_scan_zig_zag [ i ] ] = ( UWORD8 ) impeg2d_bit_stream_get ( ps_stream , 8 ) ; } } else { memcpy ( ps_dec -> au1_inter_quant_matrix , gau1_impeg2_inter_quant_matrix_default , NUM_PELS_IN_BLOCK ) ; } impeg2d_next_start_code ( ps_dec ) ; return ( IMPEG2D_ERROR_CODES_T ) IVD_ERROR_NONE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = IMPEG2D_UNSUPPORTED_DIMENSIONS ; ps_dec -> u2_reinit_max_height = ps_dec -> u2_vertical_size ; ps_dec -> u2_reinit_max_width = ps_dec -> u2_horizontal_size ; return e_error <S2SV_ModEnd> ; } ps_dec\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7417\n\n```\nCWE-20 static zval * * spl_array_get_dimension_ptr_ptr ( int check_inherited , zval * object , zval * offset , int type TSRMLS_DC ) { spl_array_object * intern = ( spl_array_object * ) zend_object_store_get_object ( object TSRMLS_CC ) ; zval * * retval ; char * key ; uint len ; long index ; HashTable * ht = spl_array_get_hash_table ( intern , 0 TSRMLS_CC ) ; <S2SV_StartBug> if ( ! offset ) { <S2SV_EndBug> return & EG ( uninitialized_zval_ptr ) ; } if ( ( type == BP_VAR_W || type == BP_VAR_RW ) && ( ht -> nApplyCount > 0 ) ) { zend_error ( E_WARNING , \"Modification<S2SV_blank>of<S2SV_blank>ArrayObject<S2SV_blank>during<S2SV_blank>sorting<S2SV_blank>is<S2SV_blank>prohibited\" ) ; return & EG ( error_zval_ptr ) ; ; } switch ( Z_TYPE_P ( offset ) ) { case IS_STRING : key = Z_STRVAL_P ( offset ) ; len = Z_STRLEN_P ( offset ) + 1 ; string_offest : if ( zend_symtable_find ( ht , key , len , ( void * * ) & retval ) == FAILURE ) { switch ( type ) { case BP_VAR_R : zend_error ( E_NOTICE , \"Undefined<S2SV_blank>index:<S2SV_blank>%s\" , key ) ; case BP_VAR_UNSET : case BP_VAR_IS : retval = & EG ( uninitialized_zval_ptr ) ; break ; case BP_VAR_RW : zend_error ( E_NOTICE , \"Undefined<S2SV_blank>index:<S2SV_blank>%s\" , key ) ; case BP_VAR_W : { zval * value ; ALLOC_INIT_ZVAL ( value ) ; zend_symtable_update ( ht , key , len , ( void * * ) & value , sizeof ( void * ) , ( void * * ) & retval ) ; } } } return retval ; case IS_NULL : key = \"\" ; len = 1 ; goto string_offest ; case IS_RESOURCE : zend_error ( E_STRICT , \"Resource<S2SV_blank>ID#%ld<S2SV_blank>used<S2SV_blank>as<S2SV_blank>offset,<S2SV_blank>casting<S2SV_blank>to<S2SV_blank>integer<S2SV_blank>(%ld)\" , Z_LVAL_P ( offset ) , Z_LVAL_P ( offset ) ) ; case IS_DOUBLE : case IS_BOOL : case IS_LONG : if ( offset -> type == IS_DOUBLE ) { index = ( long ) Z_DVAL_P ( offset ) ; } else { index = Z_LVAL_P ( offset ) ; } if ( zend_hash_index_find ( ht , index , ( void * * ) & retval ) == FAILURE ) { switch ( type ) { case BP_VAR_R : zend_error ( E_NOTICE , \"Undefined<S2SV_blank>offset:<S2SV_blank>%ld\" , index ) ; case BP_VAR_UNSET : case BP_VAR_IS : retval = & EG ( uninitialized_zval_ptr ) ; break ; case BP_VAR_RW : zend_error ( E_NOTICE , \"Undefined<S2SV_blank>offset:<S2SV_blank>%ld\" , index ) ; case BP_VAR_W : { zval * value ; ALLOC_INIT_ZVAL ( value ) ; zend_hash_index_update ( ht , index , ( void * * ) & value , sizeof ( void * ) , ( void * * ) & retval ) ; } } } return retval ; default : zend_error ( E_WARNING , \"Illegal<S2SV_blank>offset<S2SV_blank>type\" ) ; return ( type == BP_VAR_W || type == BP_VAR_RW ) ? & EG ( error_zval_ptr ) : & EG ( uninitialized_zval_ptr ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! offset || ! ht\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * create_principal_2_svc ( cprinc_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , service_name ; <S2SV_EndBug> OM_uint32 minor_stat ; kadm5_server_handle_t handle ; restriction_t * rp ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> rec . principal , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( CHANGEPW_SERVICE ( rqstp ) || ! kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_ADD , arg -> rec . principal , & rp ) || kadm5int_acl_impose_restrictions ( handle -> context , & arg -> rec , & arg -> mask , rp ) ) { ret . code = KADM5_AUTH_ADD ; log_unauth ( \"kadm5_create_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; } else { ret . code = kadm5_create_principal ( ( void * ) handle , & arg -> rec , arg -> mask , arg -> passwd ) ; if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_create_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3078\n\n```\nCWE-190 static PHP_NAMED_FUNCTION ( zif_zip_entry_read ) { zval * zip_entry ; zend_long len = 0 ; zip_read_rsrc * zr_rsrc ; zend_string * buffer ; int n = 0 ; if ( zend_parse_parameters ( ZEND_NUM_ARGS ( ) , \"r|l\" , & zip_entry , & len ) == FAILURE ) { return ; } if ( ( zr_rsrc = ( zip_read_rsrc * ) zend_fetch_resource ( Z_RES_P ( zip_entry ) , le_zip_entry_name , le_zip_entry ) ) == NULL ) { RETURN_FALSE ; } if ( len <= 0 ) { len = 1024 ; } if ( zr_rsrc -> zf ) { <S2SV_StartBug> buffer = zend_string_alloc ( len , 0 ) ; <S2SV_EndBug> n = zip_fread ( zr_rsrc -> zf , ZSTR_VAL ( buffer ) , ZSTR_LEN ( buffer ) ) ; if ( n > 0 ) { ZSTR_VAL ( buffer ) [ n ] = '\\\\0' ; ZSTR_LEN ( buffer ) = n ; RETURN_NEW_STR ( buffer ) ; } else { zend_string_free ( buffer ) ; RETURN_EMPTY_STRING ( ) } } else { RETURN_FALSE ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { buffer = zend_string_safe_alloc ( 1 , len , 0 <S2SV_ModEnd> , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 void * sspi_SecureHandleGetUpperPointer ( SecHandle * handle ) { void * pointer ; <S2SV_StartBug> if ( ! handle ) <S2SV_EndBug> return NULL ; pointer = ( void * ) ~ ( ( size_t ) handle -> dwUpper ) ; return pointer ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! handle || ! SecIsValidHandle ( handle )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext4_fill_super ( struct super_block * sb , void * data , int silent ) { char * orig_data = kstrdup ( data , GFP_KERNEL ) ; struct buffer_head * bh ; struct ext4_super_block * es = NULL ; struct ext4_sb_info * sbi ; ext4_fsblk_t block ; ext4_fsblk_t sb_block = get_sb_block ( & data ) ; ext4_fsblk_t logical_sb_block ; unsigned long offset = 0 ; unsigned long journal_devnum = 0 ; unsigned long def_mount_opts ; struct inode * root ; const char * descr ; int ret = - ENOMEM ; int blocksize , clustersize ; unsigned int db_count ; unsigned int i ; int needs_recovery , has_huge_files , has_bigalloc ; __u64 blocks_count ; int err = 0 ; unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO ; ext4_group_t first_not_zeroed ; sbi = kzalloc ( sizeof ( * sbi ) , GFP_KERNEL ) ; if ( ! sbi ) goto out_free_orig ; sbi -> s_blockgroup_lock = kzalloc ( sizeof ( struct blockgroup_lock ) , GFP_KERNEL ) ; if ( ! sbi -> s_blockgroup_lock ) { kfree ( sbi ) ; goto out_free_orig ; } sb -> s_fs_info = sbi ; sbi -> s_sb = sb ; sbi -> s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS ; sbi -> s_sb_block = sb_block ; if ( sb -> s_bdev -> bd_part ) sbi -> s_sectors_written_start = part_stat_read ( sb -> s_bdev -> bd_part , sectors [ 1 ] ) ; strreplace ( sb -> s_id , '/' , '!' ) ; ret = - EINVAL ; blocksize = sb_min_blocksize ( sb , EXT4_MIN_BLOCK_SIZE ) ; if ( ! blocksize ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>blocksize\" ) ; goto out_fail ; } if ( blocksize != EXT4_MIN_BLOCK_SIZE ) { logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE ; offset = do_div ( logical_sb_block , blocksize ) ; } else { logical_sb_block = sb_block ; } if ( ! ( bh = sb_bread_unmovable ( sb , logical_sb_block ) ) ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>superblock\" ) ; goto out_fail ; } es = ( struct ext4_super_block * ) ( bh -> b_data + offset ) ; sbi -> s_es = es ; sb -> s_magic = le16_to_cpu ( es -> s_magic ) ; if ( sb -> s_magic != EXT4_SUPER_MAGIC ) goto cantfind_ext4 ; sbi -> s_kbytes_written = le64_to_cpu ( es -> s_kbytes_written ) ; if ( ext4_has_feature_metadata_csum ( sb ) && ext4_has_feature_gdt_csum ( sb ) ) ext4_warning ( sb , \"metadata_csum<S2SV_blank>and<S2SV_blank>uninit_bg<S2SV_blank>are<S2SV_blank>\" \"redundant<S2SV_blank>flags;<S2SV_blank>please<S2SV_blank>run<S2SV_blank>fsck.\" ) ; if ( ! ext4_verify_csum_type ( sb , es ) ) { ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Found<S2SV_blank>ext4<S2SV_blank>filesystem<S2SV_blank>with<S2SV_blank>\" \"unknown<S2SV_blank>checksum<S2SV_blank>algorithm.\" ) ; silent = 1 ; goto cantfind_ext4 ; } if ( ext4_has_feature_metadata_csum ( sb ) ) { sbi -> s_chksum_driver = crypto_alloc_shash ( \"crc32c\" , 0 , 0 ) ; if ( IS_ERR ( sbi -> s_chksum_driver ) ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>load<S2SV_blank>crc32c<S2SV_blank>driver.\" ) ; ret = PTR_ERR ( sbi -> s_chksum_driver ) ; sbi -> s_chksum_driver = NULL ; goto failed_mount ; } } if ( ! ext4_superblock_csum_verify ( sb , es ) ) { ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Found<S2SV_blank>ext4<S2SV_blank>filesystem<S2SV_blank>with<S2SV_blank>\" \"invalid<S2SV_blank>superblock<S2SV_blank>checksum.<S2SV_blank><S2SV_blank>Run<S2SV_blank>e2fsck?\" ) ; silent = 1 ; ret = - EFSBADCRC ; goto cantfind_ext4 ; } if ( ext4_has_feature_csum_seed ( sb ) ) sbi -> s_csum_seed = le32_to_cpu ( es -> s_checksum_seed ) ; else if ( ext4_has_metadata_csum ( sb ) ) sbi -> s_csum_seed = ext4_chksum ( sbi , ~ 0 , es -> s_uuid , sizeof ( es -> s_uuid ) ) ; def_mount_opts = le32_to_cpu ( es -> s_default_mount_opts ) ; set_opt ( sb , INIT_INODE_TABLE ) ; if ( def_mount_opts & EXT4_DEFM_DEBUG ) set_opt ( sb , DEBUG ) ; if ( def_mount_opts & EXT4_DEFM_BSDGROUPS ) set_opt ( sb , GRPID ) ; if ( def_mount_opts & EXT4_DEFM_UID16 ) set_opt ( sb , NO_UID32 ) ; set_opt ( sb , XATTR_USER ) ; # ifdef CONFIG_EXT4_FS_POSIX_ACL set_opt ( sb , POSIX_ACL ) ; # endif if ( ext4_has_metadata_csum ( sb ) ) set_opt ( sb , JOURNAL_CHECKSUM ) ; if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_DATA ) set_opt ( sb , JOURNAL_DATA ) ; else if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_ORDERED ) set_opt ( sb , ORDERED_DATA ) ; else if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_WBACK ) set_opt ( sb , WRITEBACK_DATA ) ; if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT4_ERRORS_PANIC ) set_opt ( sb , ERRORS_PANIC ) ; else if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT4_ERRORS_CONTINUE ) set_opt ( sb , ERRORS_CONT ) ; else set_opt ( sb , ERRORS_RO ) ; set_opt ( sb , BLOCK_VALIDITY ) ; if ( def_mount_opts & EXT4_DEFM_DISCARD ) set_opt ( sb , DISCARD ) ; sbi -> s_resuid = make_kuid ( & init_user_ns , le16_to_cpu ( es -> s_def_resuid ) ) ; sbi -> s_resgid = make_kgid ( & init_user_ns , le16_to_cpu ( es -> s_def_resgid ) ) ; sbi -> s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ; sbi -> s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME ; sbi -> s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME ; if ( ( def_mount_opts & EXT4_DEFM_NOBARRIER ) == 0 ) set_opt ( sb , BARRIER ) ; if ( ! IS_EXT3_SB ( sb ) && ! IS_EXT2_SB ( sb ) && ( ( def_mount_opts & EXT4_DEFM_NODELALLOC ) == 0 ) ) set_opt ( sb , DELALLOC ) ; sbi -> s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT ; if ( ! parse_options ( ( char * ) sbi -> s_es -> s_mount_opts , sb , & journal_devnum , & journal_ioprio , 0 ) ) { ext4_msg ( sb , KERN_WARNING , \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>options<S2SV_blank>in<S2SV_blank>superblock:<S2SV_blank>%s\" , sbi -> s_es -> s_mount_opts ) ; } sbi -> s_def_mount_opt = sbi -> s_mount_opt ; if ( ! parse_options ( ( char * ) data , sb , & journal_devnum , & journal_ioprio , 0 ) ) goto failed_mount ; if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) { printk_once ( KERN_WARNING \"EXT4-fs:<S2SV_blank>Warning:<S2SV_blank>mounting<S2SV_blank>\" \"with<S2SV_blank>data=journal<S2SV_blank>disables<S2SV_blank>delayed<S2SV_blank>\" \"allocation<S2SV_blank>and<S2SV_blank>O_DIRECT<S2SV_blank>support!\\\\n\" ) ; if ( test_opt2 ( sb , EXPLICIT_DELALLOC ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>delalloc\" ) ; goto failed_mount ; } if ( test_opt ( sb , DIOREAD_NOLOCK ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>dioread_nolock\" ) ; goto failed_mount ; } if ( test_opt ( sb , DAX ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>dax\" ) ; goto failed_mount ; } if ( test_opt ( sb , DELALLOC ) ) clear_opt ( sb , DELALLOC ) ; } else { sb -> s_iflags |= SB_I_CGROUPWB ; } sb -> s_flags = ( sb -> s_flags & ~ MS_POSIXACL ) | ( test_opt ( sb , POSIX_ACL ) ? MS_POSIXACL : 0 ) ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT4_GOOD_OLD_REV && ( ext4_has_compat_features ( sb ) || ext4_has_ro_compat_features ( sb ) || ext4_has_incompat_features ( sb ) ) ) ext4_msg ( sb , KERN_WARNING , \"feature<S2SV_blank>flags<S2SV_blank>set<S2SV_blank>on<S2SV_blank>rev<S2SV_blank>0<S2SV_blank>fs,<S2SV_blank>\" \"running<S2SV_blank>e2fsck<S2SV_blank>is<S2SV_blank>recommended\" ) ; if ( es -> s_creator_os == cpu_to_le32 ( EXT4_OS_HURD ) ) { set_opt2 ( sb , HURD_COMPAT ) ; if ( ext4_has_feature_64bit ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"The<S2SV_blank>Hurd<S2SV_blank>can\\'t<S2SV_blank>support<S2SV_blank>64-bit<S2SV_blank>file<S2SV_blank>systems\" ) ; goto failed_mount ; } } if ( IS_EXT2_SB ( sb ) ) { if ( ext2_feature_set_ok ( sb ) ) ext4_msg ( sb , KERN_INFO , \"mounting<S2SV_blank>ext2<S2SV_blank>file<S2SV_blank>system<S2SV_blank>\" \"using<S2SV_blank>the<S2SV_blank>ext4<S2SV_blank>subsystem\" ) ; else { ext4_msg ( sb , KERN_ERR , \"couldn\\'t<S2SV_blank>mount<S2SV_blank>as<S2SV_blank>ext2<S2SV_blank>due<S2SV_blank>\" \"to<S2SV_blank>feature<S2SV_blank>incompatibilities\" ) ; goto failed_mount ; } } if ( IS_EXT3_SB ( sb ) ) { if ( ext3_feature_set_ok ( sb ) ) ext4_msg ( sb , KERN_INFO , \"mounting<S2SV_blank>ext3<S2SV_blank>file<S2SV_blank>system<S2SV_blank>\" \"using<S2SV_blank>the<S2SV_blank>ext4<S2SV_blank>subsystem\" ) ; else { ext4_msg ( sb , KERN_ERR , \"couldn\\'t<S2SV_blank>mount<S2SV_blank>as<S2SV_blank>ext3<S2SV_blank>due<S2SV_blank>\" \"to<S2SV_blank>feature<S2SV_blank>incompatibilities\" ) ; goto failed_mount ; } } if ( ! ext4_feature_set_ok ( sb , ( sb -> s_flags & MS_RDONLY ) ) ) goto failed_mount ; blocksize = BLOCK_SIZE << le32_to_cpu ( es -> s_log_block_size ) ; if ( blocksize < EXT4_MIN_BLOCK_SIZE || blocksize > EXT4_MAX_BLOCK_SIZE ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>filesystem<S2SV_blank>blocksize<S2SV_blank>%d\" , blocksize ) ; goto failed_mount ; } if ( sbi -> s_mount_opt & EXT4_MOUNT_DAX ) { if ( blocksize != PAGE_SIZE ) { ext4_msg ( sb , KERN_ERR , \"error:<S2SV_blank>unsupported<S2SV_blank>blocksize<S2SV_blank>for<S2SV_blank>dax\" ) ; goto failed_mount ; } if ( ! sb -> s_bdev -> bd_disk -> fops -> direct_access ) { ext4_msg ( sb , KERN_ERR , \"error:<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>dax\" ) ; goto failed_mount ; } } if ( ext4_has_feature_encrypt ( sb ) && es -> s_encryption_level ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>encryption<S2SV_blank>level<S2SV_blank>%d\" , es -> s_encryption_level ) ; goto failed_mount ; } if ( sb -> s_blocksize != blocksize ) { if ( ! sb_set_blocksize ( sb , blocksize ) ) { ext4_msg ( sb , KERN_ERR , \"bad<S2SV_blank>block<S2SV_blank>size<S2SV_blank>%d\" , blocksize ) ; goto failed_mount ; } brelse ( bh ) ; logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE ; offset = do_div ( logical_sb_block , blocksize ) ; bh = sb_bread_unmovable ( sb , logical_sb_block ) ; if ( ! bh ) { ext4_msg ( sb , KERN_ERR , \"Can\\'t<S2SV_blank>read<S2SV_blank>superblock<S2SV_blank>on<S2SV_blank>2nd<S2SV_blank>try\" ) ; goto failed_mount ; } es = ( struct ext4_super_block * ) ( bh -> b_data + offset ) ; sbi -> s_es = es ; if ( es -> s_magic != cpu_to_le16 ( EXT4_SUPER_MAGIC ) ) { ext4_msg ( sb , KERN_ERR , \"Magic<S2SV_blank>mismatch,<S2SV_blank>very<S2SV_blank>weird!\" ) ; goto failed_mount ; } } has_huge_files = ext4_has_feature_huge_file ( sb ) ; sbi -> s_bitmap_maxbytes = ext4_max_bitmap_size ( sb -> s_blocksize_bits , has_huge_files ) ; sb -> s_maxbytes = ext4_max_size ( sb -> s_blocksize_bits , has_huge_files ) ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT4_GOOD_OLD_REV ) { sbi -> s_inode_size = EXT4_GOOD_OLD_INODE_SIZE ; sbi -> s_first_ino = EXT4_GOOD_OLD_FIRST_INO ; } else { sbi -> s_inode_size = le16_to_cpu ( es -> s_inode_size ) ; sbi -> s_first_ino = le32_to_cpu ( es -> s_first_ino ) ; if ( ( sbi -> s_inode_size < EXT4_GOOD_OLD_INODE_SIZE ) || ( ! is_power_of_2 ( sbi -> s_inode_size ) ) || ( sbi -> s_inode_size > blocksize ) ) { ext4_msg ( sb , KERN_ERR , \"unsupported<S2SV_blank>inode<S2SV_blank>size:<S2SV_blank>%d\" , sbi -> s_inode_size ) ; goto failed_mount ; } if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE ) sb -> s_time_gran = 1 << ( EXT4_EPOCH_BITS - 2 ) ; } sbi -> s_desc_size = le16_to_cpu ( es -> s_desc_size ) ; if ( ext4_has_feature_64bit ( sb ) ) { if ( sbi -> s_desc_size < EXT4_MIN_DESC_SIZE_64BIT || sbi -> s_desc_size > EXT4_MAX_DESC_SIZE || ! is_power_of_2 ( sbi -> s_desc_size ) ) { ext4_msg ( sb , KERN_ERR , \"unsupported<S2SV_blank>descriptor<S2SV_blank>size<S2SV_blank>%lu\" , sbi -> s_desc_size ) ; goto failed_mount ; } } else sbi -> s_desc_size = EXT4_MIN_DESC_SIZE ; sbi -> s_blocks_per_group = le32_to_cpu ( es -> s_blocks_per_group ) ; sbi -> s_inodes_per_group = le32_to_cpu ( es -> s_inodes_per_group ) ; if ( EXT4_INODE_SIZE ( sb ) == 0 || EXT4_INODES_PER_GROUP ( sb ) == 0 ) goto cantfind_ext4 ; sbi -> s_inodes_per_block = blocksize / EXT4_INODE_SIZE ( sb ) ; if ( sbi -> s_inodes_per_block == 0 ) goto cantfind_ext4 ; sbi -> s_itb_per_group = sbi -> s_inodes_per_group / sbi -> s_inodes_per_block ; sbi -> s_desc_per_block = blocksize / EXT4_DESC_SIZE ( sb ) ; sbi -> s_sbh = bh ; sbi -> s_mount_state = le16_to_cpu ( es -> s_state ) ; sbi -> s_addr_per_block_bits = ilog2 ( EXT4_ADDR_PER_BLOCK ( sb ) ) ; sbi -> s_desc_per_block_bits = ilog2 ( EXT4_DESC_PER_BLOCK ( sb ) ) ; for ( i = 0 ; i < 4 ; i ++ ) sbi -> s_hash_seed [ i ] = le32_to_cpu ( es -> s_hash_seed [ i ] ) ; sbi -> s_def_hash_version = es -> s_def_hash_version ; if ( ext4_has_feature_dir_index ( sb ) ) { i = le32_to_cpu ( es -> s_flags ) ; if ( i & EXT2_FLAGS_UNSIGNED_HASH ) sbi -> s_hash_unsigned = 3 ; else if ( ( i & EXT2_FLAGS_SIGNED_HASH ) == 0 ) { # ifdef __CHAR_UNSIGNED__ if ( ! ( sb -> s_flags & MS_RDONLY ) ) es -> s_flags |= cpu_to_le32 ( EXT2_FLAGS_UNSIGNED_HASH ) ; sbi -> s_hash_unsigned = 3 ; # else if ( ! ( sb -> s_flags & MS_RDONLY ) ) es -> s_flags |= cpu_to_le32 ( EXT2_FLAGS_SIGNED_HASH ) ; # endif } } clustersize = BLOCK_SIZE << le32_to_cpu ( es -> s_log_cluster_size ) ; has_bigalloc = ext4_has_feature_bigalloc ( sb ) ; if ( has_bigalloc ) { if ( clustersize < blocksize ) { ext4_msg ( sb , KERN_ERR , \"cluster<S2SV_blank>size<S2SV_blank>(%d)<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>\" \"block<S2SV_blank>size<S2SV_blank>(%d)\" , clustersize , blocksize ) ; goto failed_mount ; } sbi -> s_cluster_bits = le32_to_cpu ( es -> s_log_cluster_size ) - le32_to_cpu ( es -> s_log_block_size ) ; sbi -> s_clusters_per_group = le32_to_cpu ( es -> s_clusters_per_group ) ; if ( sbi -> s_clusters_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#clusters<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_clusters_per_group ) ; goto failed_mount ; } if ( sbi -> s_blocks_per_group != ( sbi -> s_clusters_per_group * ( clustersize / blocksize ) ) ) { ext4_msg ( sb , KERN_ERR , \"blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>(%lu)<S2SV_blank>and<S2SV_blank>\" \"clusters<S2SV_blank>per<S2SV_blank>group<S2SV_blank>(%lu)<S2SV_blank>inconsistent\" , sbi -> s_blocks_per_group , sbi -> s_clusters_per_group ) ; goto failed_mount ; } } else { if ( clustersize != blocksize ) { ext4_warning ( sb , \"fragment/cluster<S2SV_blank>size<S2SV_blank>(%d)<S2SV_blank>!=<S2SV_blank>\" \"block<S2SV_blank>size<S2SV_blank>(%d)\" , clustersize , blocksize ) ; clustersize = blocksize ; } if ( sbi -> s_blocks_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_blocks_per_group ) ; goto failed_mount ; } sbi -> s_clusters_per_group = sbi -> s_blocks_per_group ; sbi -> s_cluster_bits = 0 ; } sbi -> s_cluster_ratio = clustersize / blocksize ; if ( sbi -> s_inodes_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#inodes<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_inodes_per_group ) ; goto failed_mount ; } if ( sbi -> s_blocks_per_group == clustersize << 3 ) set_opt2 ( sb , STD_GROUP_SIZE ) ; err = generic_check_addressable ( sb -> s_blocksize_bits , ext4_blocks_count ( es ) ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"filesystem\" \"<S2SV_blank>too<S2SV_blank>large<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>safely<S2SV_blank>on<S2SV_blank>this<S2SV_blank>system\" ) ; if ( sizeof ( sector_t ) < 8 ) ext4_msg ( sb , KERN_WARNING , \"CONFIG_LBDAF<S2SV_blank>not<S2SV_blank>enabled\" ) ; goto failed_mount ; } if ( EXT4_BLOCKS_PER_GROUP ( sb ) == 0 ) goto cantfind_ext4 ; blocks_count = sb -> s_bdev -> bd_inode -> i_size >> sb -> s_blocksize_bits ; if ( blocks_count && ext4_blocks_count ( es ) > blocks_count ) { ext4_msg ( sb , KERN_WARNING , \"bad<S2SV_blank>geometry:<S2SV_blank>block<S2SV_blank>count<S2SV_blank>%llu<S2SV_blank>\" \"exceeds<S2SV_blank>size<S2SV_blank>of<S2SV_blank>device<S2SV_blank>(%llu<S2SV_blank>blocks)\" , ext4_blocks_count ( es ) , blocks_count ) ; goto failed_mount ; } if ( le32_to_cpu ( es -> s_first_data_block ) >= ext4_blocks_count ( es ) ) { ext4_msg ( sb , KERN_WARNING , \"bad<S2SV_blank>geometry:<S2SV_blank>first<S2SV_blank>data<S2SV_blank>\" \"block<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>beyond<S2SV_blank>end<S2SV_blank>of<S2SV_blank>filesystem<S2SV_blank>(%llu)\" , le32_to_cpu ( es -> s_first_data_block ) , ext4_blocks_count ( es ) ) ; goto failed_mount ; } blocks_count = ( ext4_blocks_count ( es ) - le32_to_cpu ( es -> s_first_data_block ) + EXT4_BLOCKS_PER_GROUP ( sb ) - 1 ) ; do_div ( blocks_count , EXT4_BLOCKS_PER_GROUP ( sb ) ) ; if ( blocks_count > ( ( uint64_t ) 1 << 32 ) - EXT4_DESC_PER_BLOCK ( sb ) ) { ext4_msg ( sb , KERN_WARNING , \"groups<S2SV_blank>count<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%u<S2SV_blank>\" \"(block<S2SV_blank>count<S2SV_blank>%llu,<S2SV_blank>first<S2SV_blank>data<S2SV_blank>block<S2SV_blank>%u,<S2SV_blank>\" \"blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>%lu)\" , sbi -> s_groups_count , ext4_blocks_count ( es ) , le32_to_cpu ( es -> s_first_data_block ) , EXT4_BLOCKS_PER_GROUP ( sb ) ) ; goto failed_mount ; } sbi -> s_groups_count = blocks_count ; sbi -> s_blockfile_groups = min_t ( ext4_group_t , sbi -> s_groups_count , ( EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP ( sb ) ) ) ; db_count = ( sbi -> s_groups_count + EXT4_DESC_PER_BLOCK ( sb ) - 1 ) / EXT4_DESC_PER_BLOCK ( sb ) ; sbi -> s_group_desc = ext4_kvmalloc ( db_count * sizeof ( struct buffer_head * ) , GFP_KERNEL ) ; if ( sbi -> s_group_desc == NULL ) { ext4_msg ( sb , KERN_ERR , \"not<S2SV_blank>enough<S2SV_blank>memory\" ) ; ret = - ENOMEM ; goto failed_mount ; } bgl_lock_init ( sbi -> s_blockgroup_lock ) ; for ( i = 0 ; i < db_count ; i ++ ) { block = descriptor_loc ( sb , logical_sb_block , i ) ; sbi -> s_group_desc [ i ] = sb_bread_unmovable ( sb , block ) ; if ( ! sbi -> s_group_desc [ i ] ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>read<S2SV_blank>group<S2SV_blank>descriptor<S2SV_blank>%d\" , i ) ; db_count = i ; goto failed_mount2 ; } } if ( ! ext4_check_descriptors ( sb , & first_not_zeroed ) ) { ext4_msg ( sb , KERN_ERR , \"group<S2SV_blank>descriptors<S2SV_blank>corrupted!\" ) ; ret = - EFSCORRUPTED ; goto failed_mount2 ; } sbi -> s_gdb_count = db_count ; get_random_bytes ( & sbi -> s_next_generation , sizeof ( u32 ) ) ; spin_lock_init ( & sbi -> s_next_gen_lock ) ; setup_timer ( & sbi -> s_err_report , print_daily_error_info , ( unsigned long ) sb ) ; if ( ext4_es_register_shrinker ( sbi ) ) goto failed_mount3 ; sbi -> s_stripe = ext4_get_stripe_size ( sbi ) ; sbi -> s_extent_max_zeroout_kb = 32 ; sb -> s_op = & ext4_sops ; sb -> s_export_op = & ext4_export_ops ; sb -> s_xattr = ext4_xattr_handlers ; # ifdef CONFIG_QUOTA sb -> dq_op = & ext4_quota_operations ; if ( ext4_has_feature_quota ( sb ) ) sb -> s_qcop = & dquot_quotactl_sysfile_ops ; else sb -> s_qcop = & ext4_qctl_operations ; sb -> s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ ; # endif memcpy ( sb -> s_uuid , es -> s_uuid , sizeof ( es -> s_uuid ) ) ; INIT_LIST_HEAD ( & sbi -> s_orphan ) ; mutex_init ( & sbi -> s_orphan_lock ) ; sb -> s_root = NULL ; needs_recovery = ( es -> s_last_orphan != 0 || ext4_has_feature_journal_needs_recovery ( sb ) ) ; if ( ext4_has_feature_mmp ( sb ) && ! ( sb -> s_flags & MS_RDONLY ) ) if ( ext4_multi_mount_protect ( sb , le64_to_cpu ( es -> s_mmp_block ) ) ) goto failed_mount3a ; if ( ! test_opt ( sb , NOLOAD ) && ext4_has_feature_journal ( sb ) ) { if ( ext4_load_journal ( sb , es , journal_devnum ) ) goto failed_mount3a ; } else if ( test_opt ( sb , NOLOAD ) && ! ( sb -> s_flags & MS_RDONLY ) && ext4_has_feature_journal_needs_recovery ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"required<S2SV_blank>journal<S2SV_blank>recovery<S2SV_blank>\" \"suppressed<S2SV_blank>and<S2SV_blank>not<S2SV_blank>mounted<S2SV_blank>read-only\" ) ; goto failed_mount_wq ; } else { if ( test_opt2 ( sb , EXPLICIT_JOURNAL_CHECKSUM ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"journal_checksum,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } if ( test_opt ( sb , JOURNAL_ASYNC_COMMIT ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"journal_async_commit,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } if ( sbi -> s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"commit=%lu,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" , sbi -> s_commit_interval / HZ ) ; goto failed_mount_wq ; } if ( EXT4_MOUNT_DATA_FLAGS & ( sbi -> s_mount_opt ^ sbi -> s_def_mount_opt ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"data=,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } sbi -> s_def_mount_opt &= EXT4_MOUNT_JOURNAL_CHECKSUM ; clear_opt ( sb , JOURNAL_CHECKSUM ) ; clear_opt ( sb , DATA_FLAGS ) ; sbi -> s_journal = NULL ; needs_recovery = 0 ; goto no_journal ; } if ( ext4_has_feature_64bit ( sb ) && ! jbd2_journal_set_features ( EXT4_SB ( sb ) -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_64BIT ) ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>64-bit<S2SV_blank>journal<S2SV_blank>feature\" ) ; goto failed_mount_wq ; } if ( ! set_journal_csum_feature_set ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>journal<S2SV_blank>checksum<S2SV_blank>\" \"feature<S2SV_blank>set\" ) ; goto failed_mount_wq ; } switch ( test_opt ( sb , DATA_FLAGS ) ) { case 0 : if ( jbd2_journal_check_available_features ( sbi -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_REVOKE ) ) set_opt ( sb , ORDERED_DATA ) ; else set_opt ( sb , JOURNAL_DATA ) ; break ; case EXT4_MOUNT_ORDERED_DATA : case EXT4_MOUNT_WRITEBACK_DATA : if ( ! jbd2_journal_check_available_features ( sbi -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_REVOKE ) ) { ext4_msg ( sb , KERN_ERR , \"Journal<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>\" \"requested<S2SV_blank>data<S2SV_blank>journaling<S2SV_blank>mode\" ) ; goto failed_mount_wq ; } default : break ; } set_task_ioprio ( sbi -> s_journal -> j_task , journal_ioprio ) ; sbi -> s_journal -> j_commit_callback = ext4_journal_commit_callback ; no_journal : if ( ext4_mballoc_ready ) { <S2SV_StartBug> sbi -> s_mb_cache = ext4_xattr_create_cache ( sb -> s_id ) ; <S2SV_EndBug> if ( ! sbi -> s_mb_cache ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>an<S2SV_blank>mb_cache\" ) ; goto failed_mount_wq ; } } if ( ( DUMMY_ENCRYPTION_ENABLED ( sbi ) || ext4_has_feature_encrypt ( sb ) ) && ( blocksize != PAGE_CACHE_SIZE ) ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>blocksize<S2SV_blank>for<S2SV_blank>fs<S2SV_blank>encryption\" ) ; goto failed_mount_wq ; } if ( DUMMY_ENCRYPTION_ENABLED ( sbi ) && ! ( sb -> s_flags & MS_RDONLY ) && ! ext4_has_feature_encrypt ( sb ) ) { ext4_set_feature_encrypt ( sb ) ; ext4_commit_super ( sb , 1 ) ; } if ( es -> s_overhead_clusters ) sbi -> s_overhead = le32_to_cpu ( es -> s_overhead_clusters ) ; else { err = ext4_calculate_overhead ( sb ) ; if ( err ) goto failed_mount_wq ; } EXT4_SB ( sb ) -> rsv_conversion_wq = alloc_workqueue ( \"ext4-rsv-conversion\" , WQ_MEM_RECLAIM | WQ_UNBOUND , 1 ) ; if ( ! EXT4_SB ( sb ) -> rsv_conversion_wq ) { printk ( KERN_ERR \"EXT4-fs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>workqueue\\\\n\" ) ; ret = - ENOMEM ; goto failed_mount4 ; } root = ext4_iget ( sb , EXT4_ROOT_INO ) ; if ( IS_ERR ( root ) ) { ext4_msg ( sb , KERN_ERR , \"get<S2SV_blank>root<S2SV_blank>inode<S2SV_blank>failed\" ) ; ret = PTR_ERR ( root ) ; root = NULL ; goto failed_mount4 ; } if ( ! S_ISDIR ( root -> i_mode ) || ! root -> i_blocks || ! root -> i_size ) { ext4_msg ( sb , KERN_ERR , \"corrupt<S2SV_blank>root<S2SV_blank>inode,<S2SV_blank>run<S2SV_blank>e2fsck\" ) ; iput ( root ) ; goto failed_mount4 ; } sb -> s_root = d_make_root ( root ) ; if ( ! sb -> s_root ) { ext4_msg ( sb , KERN_ERR , \"get<S2SV_blank>root<S2SV_blank>dentry<S2SV_blank>failed\" ) ; ret = - ENOMEM ; goto failed_mount4 ; } if ( ext4_setup_super ( sb , es , sb -> s_flags & MS_RDONLY ) ) sb -> s_flags |= MS_RDONLY ; if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; if ( ext4_has_feature_extra_isize ( sb ) ) { if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_want_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_want_extra_isize ) ; if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_min_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_min_extra_isize ) ; } } if ( EXT4_GOOD_OLD_INODE_SIZE + sbi -> s_want_extra_isize > sbi -> s_inode_size ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; ext4_msg ( sb , KERN_INFO , \"required<S2SV_blank>extra<S2SV_blank>inode<S2SV_blank>space<S2SV_blank>not\" \"available\" ) ; } ext4_set_resv_clusters ( sb ) ; err = ext4_setup_system_zone ( sb ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>system<S2SV_blank>\" \"zone<S2SV_blank>(%d)\" , err ) ; goto failed_mount4a ; } ext4_ext_init ( sb ) ; err = ext4_mb_init ( sb ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>mballoc<S2SV_blank>(%d)\" , err ) ; goto failed_mount5 ; } block = ext4_count_free_clusters ( sb ) ; ext4_free_blocks_count_set ( sbi -> s_es , EXT4_C2B ( sbi , block ) ) ; err = percpu_counter_init ( & sbi -> s_freeclusters_counter , block , GFP_KERNEL ) ; if ( ! err ) { unsigned long freei = ext4_count_free_inodes ( sb ) ; sbi -> s_es -> s_free_inodes_count = cpu_to_le32 ( freei ) ; err = percpu_counter_init ( & sbi -> s_freeinodes_counter , freei , GFP_KERNEL ) ; } if ( ! err ) err = percpu_counter_init ( & sbi -> s_dirs_counter , ext4_count_dirs ( sb ) , GFP_KERNEL ) ; if ( ! err ) err = percpu_counter_init ( & sbi -> s_dirtyclusters_counter , 0 , GFP_KERNEL ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"insufficient<S2SV_blank>memory\" ) ; goto failed_mount6 ; } if ( ext4_has_feature_flex_bg ( sb ) ) if ( ! ext4_fill_flex_info ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>\" \"flex_bg<S2SV_blank>meta<S2SV_blank>info!\" ) ; goto failed_mount6 ; } err = ext4_register_li_request ( sb , first_not_zeroed ) ; if ( err ) goto failed_mount6 ; err = ext4_register_sysfs ( sb ) ; if ( err ) goto failed_mount7 ; # ifdef CONFIG_QUOTA if ( ext4_has_feature_quota ( sb ) && ! ( sb -> s_flags & MS_RDONLY ) ) { err = ext4_enable_quotas ( sb ) ; if ( err ) goto failed_mount8 ; } # endif EXT4_SB ( sb ) -> s_mount_state |= EXT4_ORPHAN_FS ; ext4_orphan_cleanup ( sb , es ) ; EXT4_SB ( sb ) -> s_mount_state &= ~ EXT4_ORPHAN_FS ; if ( needs_recovery ) { ext4_msg ( sb , KERN_INFO , \"recovery<S2SV_blank>complete\" ) ; ext4_mark_recovery_complete ( sb , es ) ; } if ( EXT4_SB ( sb ) -> s_journal ) { if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) descr = \"<S2SV_blank>journalled<S2SV_blank>data<S2SV_blank>mode\" ; else if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_ORDERED_DATA ) descr = \"<S2SV_blank>ordered<S2SV_blank>data<S2SV_blank>mode\" ; else descr = \"<S2SV_blank>writeback<S2SV_blank>data<S2SV_blank>mode\" ; } else descr = \"out<S2SV_blank>journal\" ; if ( test_opt ( sb , DISCARD ) ) { struct request_queue * q = bdev_get_queue ( sb -> s_bdev ) ; if ( ! blk_queue_discard ( q ) ) ext4_msg ( sb , KERN_WARNING , \"mounting<S2SV_blank>with<S2SV_blank>\\\\\"discard\\\\\"<S2SV_blank>option,<S2SV_blank>but<S2SV_blank>\" \"the<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>discard\" ) ; } if ( ___ratelimit ( & ext4_mount_msg_ratelimit , \"EXT4-fs<S2SV_blank>mount\" ) ) ext4_msg ( sb , KERN_INFO , \"mounted<S2SV_blank>filesystem<S2SV_blank>with%s.<S2SV_blank>\" \"Opts:<S2SV_blank>%s%s%s\" , descr , sbi -> s_es -> s_mount_opts , * sbi -> s_es -> s_mount_opts ? \";<S2SV_blank>\" : \"\" , orig_data ) ; if ( es -> s_error_count ) mod_timer ( & sbi -> s_err_report , jiffies + 300 * HZ ) ; ratelimit_state_init ( & sbi -> s_err_ratelimit_state , 5 * HZ , 10 ) ; ratelimit_state_init ( & sbi -> s_warning_ratelimit_state , 5 * HZ , 10 ) ; ratelimit_state_init ( & sbi -> s_msg_ratelimit_state , 5 * HZ , 10 ) ; kfree ( orig_data ) ; return 0 ; cantfind_ext4 : if ( ! silent ) ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Can\\'t<S2SV_blank>find<S2SV_blank>ext4<S2SV_blank>filesystem\" ) ; goto failed_mount ; # ifdef CONFIG_QUOTA failed_mount8 : ext4_unregister_sysfs ( sb ) ; # endif failed_mount7 : ext4_unregister_li_request ( sb ) ; failed_mount6 : ext4_mb_release ( sb ) ; if ( sbi -> s_flex_groups ) kvfree ( sbi -> s_flex_groups ) ; percpu_counter_destroy ( & sbi -> s_freeclusters_counter ) ; percpu_counter_destroy ( & sbi -> s_freeinodes_counter ) ; percpu_counter_destroy ( & sbi -> s_dirs_counter ) ; percpu_counter_destroy ( & sbi -> s_dirtyclusters_counter ) ; failed_mount5 : ext4_ext_release ( sb ) ; ext4_release_system_zone ( sb ) ; failed_mount4a : dput ( sb -> s_root ) ; sb -> s_root = NULL ; failed_mount4 : ext4_msg ( sb , KERN_ERR , \"mount<S2SV_blank>failed\" ) ; if ( EXT4_SB ( sb ) -> rsv_conversion_wq ) destroy_workqueue ( EXT4_SB ( sb ) -> rsv_conversion_wq ) ; <S2SV_StartBug> failed_mount_wq : <S2SV_EndBug> if ( sbi -> s_journal ) { jbd2_journal_destroy ( sbi -> s_journal ) ; sbi -> s_journal = NULL ; } failed_mount3a : ext4_es_unregister_shrinker ( sbi ) ; failed_mount3 : del_timer_sync ( & sbi -> s_err_report ) ; if ( sbi -> s_mmp_tsk ) kthread_stop ( sbi -> s_mmp_tsk ) ; failed_mount2 : for ( i = 0 ; i < db_count ; i ++ ) brelse ( sbi -> s_group_desc [ i ] ) ; kvfree ( sbi -> s_group_desc ) ; failed_mount : if ( sbi -> s_chksum_driver ) crypto_free_shash ( sbi -> s_chksum_driver ) ; # ifdef CONFIG_QUOTA for ( i = 0 ; i < EXT4_MAXQUOTAS ; i ++ ) kfree ( sbi -> s_qf_names [ i ] ) ; # endif ext4_blkdev_remove ( sbi ) ; brelse ( bh ) ; out_fail : sb -> s_fs_info = NULL ; kfree ( sbi -> s_blockgroup_lock ) ; kfree ( sbi ) ; out_free_orig : kfree ( orig_data ) ; return err ? err : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = ext4_xattr_create_cache ( <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; failed_mount_wq : if ( sbi -> s_mb_cache ) { ext4_xattr_destroy_cache ( sbi -> s_mb_cache ) ; sbi -> s_mb_cache = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3232\n\n```\nCWE-200 static int nr_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct sockaddr_ax25 * sax = ( struct sockaddr_ax25 * ) msg -> msg_name ; size_t copied ; struct sk_buff * skb ; int er ; lock_sock ( sk ) ; if ( sk -> sk_state != TCP_ESTABLISHED ) { release_sock ( sk ) ; return - ENOTCONN ; } if ( ( skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , flags & MSG_DONTWAIT , & er ) ) == NULL ) { release_sock ( sk ) ; return er ; } skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { copied = size ; msg -> msg_flags |= MSG_TRUNC ; } er = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( er < 0 ) { skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return er ; } if ( sax != NULL ) { <S2SV_StartBug> sax -> sax25_family = AF_NETROM ; <S2SV_EndBug> skb_copy_from_linear_data_offset ( skb , 7 , sax -> sax25_call . ax25_call , AX25_ADDR_LEN ) ; } msg -> msg_namelen = sizeof ( * sax ) ; skb_free_datagram ( sk , skb ) ; release_sock ( sk ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { memset ( sax , 0 , sizeof ( sax ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15173\n\n```\nCWE-119 struct l2tp_packet_t * l2tp_packet_alloc ( int ver , int msg_type , const struct sockaddr_in * addr , int H , const char * secret , size_t secret_len ) { struct l2tp_packet_t * pack = mempool_alloc ( pack_pool ) ; if ( ! pack ) return NULL ; memset ( pack , 0 , sizeof ( * pack ) ) ; INIT_LIST_HEAD ( & pack -> attrs ) ; <S2SV_StartBug> pack -> hdr . ver = ver ; <S2SV_EndBug> pack -> hdr . T = 1 ; pack -> hdr . L = 1 ; pack -> hdr . S = 1 ; memcpy ( & pack -> addr , addr , sizeof ( * addr ) ) ; pack -> hide_avps = H ; pack -> secret = secret ; pack -> secret_len = secret_len ; if ( msg_type ) { if ( l2tp_packet_add_int16 ( pack , Message_Type , msg_type , 1 ) ) { mempool_free ( pack ) ; return NULL ; } } return pack ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> hdr . flags = L2TP_FLAG_T | L2TP_FLAG_L | L2TP_FLAG_S | ( ver & L2TP_VER_MASK ) <S2SV_ModEnd> ; memcpy (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10129\n\n```\nCWE-476 static int parse_report ( transport_smart * transport , git_push * push ) { git_pkt * pkt = NULL ; const char * line_end = NULL ; gitno_buffer * buf = & transport -> buffer ; int error , recvd ; git_buf data_pkt_buf = GIT_BUF_INIT ; for ( ; ; ) { if ( buf -> offset > 0 ) error = git_pkt_parse_line ( & pkt , buf -> data , & line_end , buf -> offset ) ; else error = GIT_EBUFS ; if ( error < 0 && error != GIT_EBUFS ) { error = - 1 ; goto done ; } if ( error == GIT_EBUFS ) { if ( ( recvd = gitno_recv ( buf ) ) < 0 ) { error = recvd ; goto done ; } if ( recvd == 0 ) { giterr_set ( GITERR_NET , \"early<S2SV_blank>EOF\" ) ; error = GIT_EEOF ; goto done ; } continue ; } gitno_consume ( buf , line_end ) ; <S2SV_StartBug> error = 0 ; <S2SV_EndBug> if ( pkt == NULL ) continue ; switch ( pkt -> type ) { case GIT_PKT_DATA : error = add_push_report_sideband_pkt ( push , ( git_pkt_data * ) pkt , & data_pkt_buf ) ; break ; case GIT_PKT_ERR : giterr_set ( GITERR_NET , \"report-status:<S2SV_blank>Error<S2SV_blank>reported:<S2SV_blank>%s\" , ( ( git_pkt_err * ) pkt ) -> error ) ; error = - 1 ; break ; case GIT_PKT_PROGRESS : if ( transport -> progress_cb ) { git_pkt_progress * p = ( git_pkt_progress * ) pkt ; error = transport -> progress_cb ( p -> data , p -> len , transport -> message_cb_payload ) ; } break ; default : error = add_push_report_pkt ( push , pkt ) ; break ; } git_pkt_free ( pkt ) ; if ( error == GIT_ITEROVER ) { error = 0 ; if ( data_pkt_buf . size > 0 ) { giterr_set ( GITERR_NET , \"Incomplete<S2SV_blank>pack<S2SV_blank>data<S2SV_blank>pkt-line\" ) ; error = GIT_ERROR ; } goto done ; } if ( error < 0 ) { goto done ; } } done : git_buf_free ( & data_pkt_buf ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error = 0 <S2SV_ModEnd> ; switch (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8630\n\n```\nCWE-000 kadm5_ret_t kadm5_create_principal_3 ( void * server_handle , kadm5_principal_ent_t entry , long mask , int n_ks_tuple , krb5_key_salt_tuple * ks_tuple , char * password ) { krb5_db_entry * kdb ; osa_princ_ent_rec adb ; kadm5_policy_ent_rec polent ; krb5_boolean have_polent = FALSE ; krb5_int32 now ; krb5_tl_data * tl_data_tail ; unsigned int ret ; kadm5_server_handle_t handle = server_handle ; krb5_keyblock * act_mkey ; krb5_kvno act_kvno ; int new_n_ks_tuple = 0 ; krb5_key_salt_tuple * new_ks_tuple = NULL ; CHECK_HANDLE ( server_handle ) ; krb5_clear_error_message ( handle -> context ) ; check_1_6_dummy ( entry , mask , n_ks_tuple , ks_tuple , & password ) ; <S2SV_StartBug> if ( ! ( mask & KADM5_PRINCIPAL ) || ( mask & KADM5_MOD_NAME ) || <S2SV_EndBug> ( mask & KADM5_MOD_TIME ) || ( mask & KADM5_LAST_PWD_CHANGE ) || ( mask & KADM5_MKVNO ) || ( mask & KADM5_AUX_ATTRIBUTES ) || ( mask & KADM5_LAST_SUCCESS ) || ( mask & KADM5_LAST_FAILED ) || ( mask & KADM5_FAIL_AUTH_COUNT ) ) return KADM5_BAD_MASK ; if ( ( mask & KADM5_KEY_DATA ) && entry -> n_key_data != 0 ) return KADM5_BAD_MASK ; <S2SV_StartBug> if ( ( mask & KADM5_POLICY ) && ( mask & KADM5_POLICY_CLR ) ) <S2SV_EndBug> return KADM5_BAD_MASK ; <S2SV_StartBug> if ( ( mask & ~ ALL_PRINC_MASK ) ) <S2SV_EndBug> <S2SV_StartBug> return KADM5_BAD_MASK ; <S2SV_EndBug> if ( entry == NULL ) return EINVAL ; ret = kdb_get_entry ( handle , entry -> principal , & kdb , & adb ) ; switch ( ret ) { case KADM5_UNK_PRINC : break ; case 0 : kdb_free_entry ( handle , kdb , & adb ) ; return KADM5_DUP ; default : return ret ; } kdb = krb5_db_alloc ( handle -> context , NULL , sizeof ( * kdb ) ) ; if ( kdb == NULL ) return ENOMEM ; memset ( kdb , 0 , sizeof ( * kdb ) ) ; memset ( & adb , 0 , sizeof ( osa_princ_ent_rec ) ) ; if ( ( mask & KADM5_POLICY ) ) { ret = get_policy ( handle , entry -> policy , & polent , & have_polent ) ; if ( ret ) goto cleanup ; } if ( password ) { ret = passwd_check ( handle , password , have_polent ? & polent : NULL , entry -> principal ) ; if ( ret ) goto cleanup ; } if ( ( ret = krb5_timeofday ( handle -> context , & now ) ) ) goto cleanup ; kdb -> magic = KRB5_KDB_MAGIC_NUMBER ; kdb -> len = KRB5_KDB_V1_BASE_LENGTH ; if ( ( mask & KADM5_ATTRIBUTES ) ) kdb -> attributes = entry -> attributes ; else kdb -> attributes = handle -> params . flags ; if ( ( mask & KADM5_MAX_LIFE ) ) kdb -> max_life = entry -> max_life ; else kdb -> max_life = handle -> params . max_life ; if ( mask & KADM5_MAX_RLIFE ) kdb -> max_renewable_life = entry -> max_renewable_life ; else kdb -> max_renewable_life = handle -> params . max_rlife ; if ( ( mask & KADM5_PRINC_EXPIRE_TIME ) ) kdb -> expiration = entry -> princ_expire_time ; else kdb -> expiration = handle -> params . expiration ; kdb -> pw_expiration = 0 ; if ( have_polent ) { if ( polent . pw_max_life ) kdb -> pw_expiration = now + polent . pw_max_life ; else kdb -> pw_expiration = 0 ; } if ( ( mask & KADM5_PW_EXPIRATION ) ) kdb -> pw_expiration = entry -> pw_expiration ; kdb -> last_success = 0 ; kdb -> last_failed = 0 ; kdb -> fail_auth_count = 0 ; if ( ( ret = kadm5_copy_principal ( handle -> context , entry -> principal , & ( kdb -> princ ) ) ) ) goto cleanup ; if ( ( ret = krb5_dbe_update_last_pwd_change ( handle -> context , kdb , now ) ) ) goto cleanup ; if ( mask & KADM5_TL_DATA ) { for ( tl_data_tail = entry -> tl_data ; tl_data_tail ; tl_data_tail = tl_data_tail -> tl_data_next ) { ret = krb5_dbe_update_tl_data ( handle -> context , kdb , tl_data_tail ) ; if ( ret ) goto cleanup ; } } ret = apply_keysalt_policy ( handle , entry -> policy , n_ks_tuple , ks_tuple , & new_n_ks_tuple , & new_ks_tuple ) ; if ( ret ) goto cleanup ; ret = kdb_get_active_mkey ( handle , & act_kvno , & act_mkey ) ; if ( ret ) goto cleanup ; if ( mask & KADM5_KEY_DATA ) { assert ( entry -> n_key_data == 0 ) ; } else if ( password ) { ret = krb5_dbe_cpw ( handle -> context , act_mkey , new_ks_tuple , new_n_ks_tuple , password , ( mask & KADM5_KVNO ) ? entry -> kvno : 1 , FALSE , kdb ) ; } else { ret = krb5_dbe_crk ( handle -> context , & master_keyblock , new_ks_tuple , new_n_ks_tuple , FALSE , kdb ) ; } if ( ret ) goto cleanup ; ret = krb5_dbe_update_mkvno ( handle -> context , kdb , act_kvno ) ; if ( ret ) goto cleanup ; ret = k5_kadm5_hook_create ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_PRECOMMIT , entry , mask , new_n_ks_tuple , new_ks_tuple , password ) ; if ( ret ) goto cleanup ; adb . admin_history_kvno = INITIAL_HIST_KVNO ; if ( mask & KADM5_POLICY ) { adb . aux_attributes = KADM5_POLICY ; adb . policy = entry -> policy ; } kdb -> mask = mask | KADM5_KEY_DATA | KADM5_PRINCIPAL ; ret = kdb_put_entry ( handle , kdb , & adb ) ; ( void ) k5_kadm5_hook_create ( handle -> context , handle -> hook_handles , KADM5_HOOK_STAGE_POSTCOMMIT , entry , mask , new_n_ks_tuple , new_ks_tuple , password ) ; cleanup : free ( new_ks_tuple ) ; krb5_db_free_principal ( handle -> context , kdb ) ; if ( have_polent ) ( void ) kadm5_free_policy_ent ( handle -> lhandle , & polent ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( entry == NULL ) return EINVAL ; if ( <S2SV_ModStart> KADM5_POLICY ) && entry -> policy == NULL <S2SV_ModEnd> ) return KADM5_BAD_MASK <S2SV_ModStart> ( mask & KADM5_POLICY ) && ( mask & KADM5_POLICY_CLR ) ) return KADM5_BAD_MASK ; if ( ( mask & <S2SV_ModStart> ) return KADM5_BAD_MASK <S2SV_ModEnd> ; ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4177\n\n```\nCWE-000 struct vfsmount * collect_mounts ( struct path * path ) { struct mount * tree ; <S2SV_StartBug> namespace_lock ( ) ; <S2SV_EndBug> tree = copy_tree ( real_mount ( path -> mnt ) , path -> dentry , CL_COPY_ALL | CL_PRIVATE ) ; namespace_unlock ( ) ; if ( IS_ERR ( tree ) ) return ERR_CAST ( tree ) ; return & tree -> mnt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; if ( ! check_mnt ( real_mount ( path -> mnt ) ) ) tree = ERR_PTR ( - EINVAL ) ; else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6353\n\n```\nCWE-415 int sctp_do_peeloff ( struct sock * sk , sctp_assoc_t id , struct socket * * sockp ) { struct sctp_association * asoc = sctp_id2assoc ( sk , id ) ; struct sctp_sock * sp = sctp_sk ( sk ) ; struct socket * sock ; int err = 0 ; if ( ! asoc ) <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> if ( ! sctp_style ( sk , UDP ) ) return - EINVAL ; err = sock_create ( sk -> sk_family , SOCK_SEQPACKET , IPPROTO_SCTP , & sock ) ; if ( err < 0 ) return err ; sctp_copy_sock ( sock -> sk , sk , asoc ) ; sp -> pf -> to_sk_daddr ( & asoc -> peer . primary_addr , sk ) ; sctp_sock_migrate ( sk , sock -> sk , asoc , SCTP_SOCKET_UDP_HIGH_BANDWIDTH ) ; * sockp = sock ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return - EINVAL ; if ( waitqueue_active ( & asoc -> wait ) ) return - EBUSY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadFAXImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image ; MagickBooleanType status ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> storage_class = PseudoClass ; if ( image -> columns == 0 ) image -> columns = 2592 ; if ( image -> rows == 0 ) image -> rows = 3508 ; image -> depth = 8 ; if ( AcquireImageColormap ( image , 2 ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; image -> colormap [ 0 ] . red = QuantumRange ; image -> colormap [ 0 ] . green = QuantumRange ; image -> colormap [ 0 ] . blue = QuantumRange ; image -> colormap [ 1 ] . red = ( Quantum ) 0 ; image -> colormap [ 1 ] . green = ( Quantum ) 0 ; image -> colormap [ 1 ] . blue = ( Quantum ) 0 ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } <S2SV_StartBug> status = HuffmanDecodeImage ( image ) ; <S2SV_EndBug> if ( status == MagickFalse ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; } status =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_hp_hostinfo ( unsigned long arg , unsigned int data_size ) <S2SV_EndBug> { hp_host_info_t __user * uarg = ( void __user * ) arg ; <S2SV_StartBug> MPT_ADAPTER * ioc ; <S2SV_EndBug> struct pci_dev * pdev ; char * pbuf = NULL ; dma_addr_t buf_dma ; hp_host_info_t karg ; CONFIGPARMS cfg ; <S2SV_StartBug> ConfigPageHeader_t hdr ; <S2SV_EndBug> int iocnum ; int rc , cim_rev ; ToolboxIstwiReadWriteRequest_t * IstwiRWRequest ; MPT_FRAME_HDR * mf = NULL ; unsigned long timeleft ; int retval ; u32 msgcontext ; if ( data_size == sizeof ( hp_host_info_t ) ) cim_rev = 1 ; else if ( data_size == sizeof ( hp_host_info_rev0_t ) ) cim_rev = 0 ; else return - EFAULT ; if ( copy_from_user ( & karg , uarg , sizeof ( hp_host_info_t ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::mptctl_hp_host_info<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>hp_host_info<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , uarg ) ; return - EFAULT ; } <S2SV_StartBug> if ( ( ( iocnum = mpt_verify_adapter ( karg . hdr . iocnum , & ioc ) ) < 0 ) || <S2SV_EndBug> ( ioc == NULL ) ) { printk ( KERN_DEBUG MYNAM \"%s::mptctl_hp_hostinfo()<S2SV_blank>@%d<S2SV_blank>-<S2SV_blank>ioc%d<S2SV_blank>not<S2SV_blank>found!\\\\n\" , __FILE__ , __LINE__ , iocnum ) ; return - ENODEV ; } dctlprintk ( ioc , printk ( MYIOC_s_DEBUG_FMT \":<S2SV_blank>mptctl_hp_hostinfo<S2SV_blank>called.\\\\n\" , ioc -> name ) ) ; pdev = ( struct pci_dev * ) ioc -> pcidev ; karg . vendor = pdev -> vendor ; karg . device = pdev -> device ; karg . subsystem_id = pdev -> subsystem_device ; karg . subsystem_vendor = pdev -> subsystem_vendor ; karg . devfn = pdev -> devfn ; karg . bus = pdev -> bus -> number ; if ( ioc -> sh != NULL ) karg . host_no = ioc -> sh -> host_no ; else karg . host_no = - 1 ; snprintf ( karg . fw_version , sizeof ( karg . fw_version ) , \"%.2hhu.%.2hhu.%.2hhu.%.2hhu\" , ioc -> facts . FWVersion . Struct . Major , ioc -> facts . FWVersion . Struct . Minor , ioc -> facts . FWVersion . Struct . Unit , ioc -> facts . FWVersion . Struct . Dev ) ; hdr . PageVersion = 0 ; hdr . PageLength = 0 ; hdr . PageNumber = 0 ; hdr . PageType = MPI_CONFIG_PAGETYPE_MANUFACTURING ; cfg . cfghdr . hdr = & hdr ; cfg . physAddr = - 1 ; cfg . pageAddr = 0 ; cfg . action = MPI_CONFIG_ACTION_PAGE_HEADER ; cfg . dir = 0 ; cfg . timeout = 10 ; strncpy ( karg . serial_number , \"<S2SV_blank>\" , 24 ) ; if ( mpt_config ( ioc , & cfg ) == 0 ) { if ( cfg . cfghdr . hdr -> PageLength > 0 ) { cfg . action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT ; pbuf = pci_alloc_consistent ( ioc -> pcidev , hdr . PageLength * 4 , & buf_dma ) ; if ( pbuf ) { cfg . physAddr = buf_dma ; if ( mpt_config ( ioc , & cfg ) == 0 ) { ManufacturingPage0_t * pdata = ( ManufacturingPage0_t * ) pbuf ; if ( strlen ( pdata -> BoardTracerNumber ) > 1 ) { strlcpy ( karg . serial_number , pdata -> BoardTracerNumber , 24 ) ; } } pci_free_consistent ( ioc -> pcidev , hdr . PageLength * 4 , pbuf , buf_dma ) ; pbuf = NULL ; } } } rc = mpt_GetIocState ( ioc , 1 ) ; switch ( rc ) { case MPI_IOC_STATE_OPERATIONAL : karg . ioc_status = HP_STATUS_OK ; break ; case MPI_IOC_STATE_FAULT : karg . ioc_status = HP_STATUS_FAILED ; break ; case MPI_IOC_STATE_RESET : case MPI_IOC_STATE_READY : default : karg . ioc_status = HP_STATUS_OTHER ; break ; } karg . base_io_addr = pci_resource_start ( pdev , 0 ) ; if ( ( ioc -> bus_type == SAS ) || ( ioc -> bus_type == FC ) ) karg . bus_phys_width = HP_BUS_WIDTH_UNK ; else karg . bus_phys_width = HP_BUS_WIDTH_16 ; karg . hard_resets = 0 ; karg . soft_resets = 0 ; karg . timeouts = 0 ; if ( ioc -> sh != NULL ) { MPT_SCSI_HOST * hd = shost_priv ( ioc -> sh ) ; if ( hd && ( cim_rev == 1 ) ) { karg . hard_resets = ioc -> hard_resets ; karg . soft_resets = ioc -> soft_resets ; karg . timeouts = ioc -> timeouts ; } } if ( ( mf = mpt_get_msg_frame ( mptctl_id , ioc ) ) == NULL ) { dfailprintk ( ioc , printk ( MYIOC_s_WARN_FMT \"%s,<S2SV_blank>no<S2SV_blank>msg<S2SV_blank>frames!!\\\\n\" , ioc -> name , __func__ ) ) ; goto out ; } IstwiRWRequest = ( ToolboxIstwiReadWriteRequest_t * ) mf ; msgcontext = IstwiRWRequest -> MsgContext ; memset ( IstwiRWRequest , 0 , sizeof ( ToolboxIstwiReadWriteRequest_t ) ) ; IstwiRWRequest -> MsgContext = msgcontext ; IstwiRWRequest -> Function = MPI_FUNCTION_TOOLBOX ; IstwiRWRequest -> Tool = MPI_TOOLBOX_ISTWI_READ_WRITE_TOOL ; IstwiRWRequest -> Flags = MPI_TB_ISTWI_FLAGS_READ ; IstwiRWRequest -> NumAddressBytes = 0x01 ; IstwiRWRequest -> DataLength = cpu_to_le16 ( 0x04 ) ; if ( pdev -> devfn & 1 ) IstwiRWRequest -> DeviceAddr = 0xB2 ; else IstwiRWRequest -> DeviceAddr = 0xB0 ; pbuf = pci_alloc_consistent ( ioc -> pcidev , 4 , & buf_dma ) ; if ( ! pbuf ) goto out ; ioc -> add_sge ( ( char * ) & IstwiRWRequest -> SGL , ( MPT_SGE_FLAGS_SSIMPLE_READ | 4 ) , buf_dma ) ; retval = 0 ; SET_MGMT_MSG_CONTEXT ( ioc -> ioctl_cmds . msg_context , IstwiRWRequest -> MsgContext ) ; INITIALIZE_MGMT_STATUS ( ioc -> ioctl_cmds . status ) mpt_put_msg_frame ( mptctl_id , ioc , mf ) ; retry_wait : timeleft = wait_for_completion_timeout ( & ioc -> ioctl_cmds . done , HZ * MPT_IOCTL_DEFAULT_TIMEOUT ) ; if ( ! ( ioc -> ioctl_cmds . status & MPT_MGMT_STATUS_COMMAND_GOOD ) ) { retval = - ETIME ; printk ( MYIOC_s_WARN_FMT \"%s:<S2SV_blank>failed\\\\n\" , ioc -> name , __func__ ) ; if ( ioc -> ioctl_cmds . status & MPT_MGMT_STATUS_DID_IOCRESET ) { mpt_free_msg_frame ( ioc , mf ) ; goto out ; } if ( ! timeleft ) { printk ( MYIOC_s_WARN_FMT \"HOST<S2SV_blank>INFO<S2SV_blank>command<S2SV_blank>timeout,<S2SV_blank>doorbell=0x%08x\\\\n\" , ioc -> name , mpt_GetIocState ( ioc , 0 ) ) ; mptctl_timeout_expired ( ioc , mf ) ; } else goto retry_wait ; goto out ; } if ( ioc -> ioctl_cmds . status & MPT_MGMT_STATUS_RF_VALID ) karg . rsvd = * ( u32 * ) pbuf ; out : CLEAR_MGMT_STATUS ( ioc -> ioctl_cmds . status ) SET_MGMT_MSG_CONTEXT ( ioc -> ioctl_cmds . msg_context , 0 ) ; if ( pbuf ) pci_free_consistent ( ioc -> pcidev , 4 , pbuf , buf_dma ) ; if ( copy_to_user ( ( char __user * ) arg , & karg , sizeof ( hp_host_info_t ) ) ) { printk ( MYIOC_s_ERR_FMT \"%s@%d::mptctl_hpgethostinfo<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>write<S2SV_blank>out<S2SV_blank>hp_host_info<S2SV_blank>@<S2SV_blank>%p\\\\n\" , ioc -> name , __FILE__ , __LINE__ , uarg ) ; return - EFAULT ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_hp_hostinfo ( MPT_ADAPTER * ioc , <S2SV_ModStart> ) arg ; <S2SV_ModEnd> struct pci_dev * <S2SV_ModStart> ; ConfigPageHeader_t hdr <S2SV_ModEnd> ; int rc <S2SV_ModStart> EFAULT ; } <S2SV_ModEnd> dctlprintk ( ioc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0038\n\n```\nCWE-20 asmlinkage long compat_sys_recvmmsg ( int fd , struct compat_mmsghdr __user * mmsg , unsigned int vlen , unsigned int flags , struct compat_timespec __user * timeout ) { int datagrams ; struct timespec ktspec ; if ( flags & MSG_CMSG_COMPAT ) return - EINVAL ; <S2SV_StartBug> if ( COMPAT_USE_64BIT_TIME ) <S2SV_EndBug> return __sys_recvmmsg ( fd , ( struct mmsghdr __user * ) mmsg , vlen , flags | MSG_CMSG_COMPAT , ( struct timespec * ) timeout ) ; if ( timeout == NULL ) return __sys_recvmmsg ( fd , ( struct mmsghdr __user * ) mmsg , vlen , flags | MSG_CMSG_COMPAT , NULL ) ; <S2SV_StartBug> if ( get_compat_timespec ( & ktspec , timeout ) ) <S2SV_EndBug> return - EFAULT ; datagrams = __sys_recvmmsg ( fd , ( struct mmsghdr __user * ) mmsg , vlen , flags | MSG_CMSG_COMPAT , & ktspec ) ; <S2SV_StartBug> if ( datagrams > 0 && put_compat_timespec ( & ktspec , timeout ) ) <S2SV_EndBug> datagrams = - EFAULT ; return datagrams ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> timeout == NULL <S2SV_ModStart> ; if ( compat_get_timespec <S2SV_ModEnd> ( & ktspec <S2SV_ModStart> > 0 && compat_put_timespec <S2SV_ModEnd> ( & ktspec\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11379\n\n```\nCWE-125 static int get_debug_info ( struct PE_ ( r_bin_pe_obj_t ) * bin , PE_ ( image_debug_directory_entry ) * dbg_dir_entry , ut8 * dbg_data , int dbg_data_len , SDebugInfo * res ) { # define SIZEOF_FILE_NAME 255 int i = 0 ; const char * basename ; if ( ! dbg_data ) { return 0 ; } switch ( dbg_dir_entry -> Type ) { case IMAGE_DEBUG_TYPE_CODEVIEW : if ( ! strncmp ( ( char * ) dbg_data , \"RSDS\" , 4 ) ) { SCV_RSDS_HEADER rsds_hdr ; init_rsdr_hdr ( & rsds_hdr ) ; if ( ! get_rsds ( dbg_data , dbg_data_len , & rsds_hdr ) ) { bprintf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>read<S2SV_blank>PE<S2SV_blank>debug<S2SV_blank>info\\\\n\" ) ; return 0 ; } snprintf ( res -> guidstr , GUIDSTR_LEN , \"%08x%04x%04x%02x%02x%02x%02x%02x%02x%02x%02x%x\" , rsds_hdr . guid . data1 , rsds_hdr . guid . data2 , rsds_hdr . guid . data3 , rsds_hdr . guid . data4 [ 0 ] , rsds_hdr . guid . data4 [ 1 ] , rsds_hdr . guid . data4 [ 2 ] , rsds_hdr . guid . data4 [ 3 ] , rsds_hdr . guid . data4 [ 4 ] , rsds_hdr . guid . data4 [ 5 ] , rsds_hdr . guid . data4 [ 6 ] , rsds_hdr . guid . data4 [ 7 ] , rsds_hdr . age ) ; basename = r_file_basename ( ( char * ) rsds_hdr . file_name ) ; strncpy ( res -> file_name , ( const char * ) basename , sizeof ( res -> file_name ) ) ; res -> file_name [ sizeof ( res -> file_name ) - 1 ] = 0 ; rsds_hdr . free ( ( struct SCV_RSDS_HEADER * ) & rsds_hdr ) ; } else if ( strncmp ( ( const char * ) dbg_data , \"NB10\" , 4 ) == 0 ) { <S2SV_StartBug> SCV_NB10_HEADER nb10_hdr ; <S2SV_EndBug> init_cv_nb10_header ( & nb10_hdr ) ; get_nb10 ( dbg_data , & nb10_hdr ) ; snprintf ( res -> guidstr , sizeof ( res -> guidstr ) , <S2SV_StartBug> \"%x%x\" , nb10_hdr . timestamp , nb10_hdr . age ) ; <S2SV_EndBug> strncpy ( res -> file_name , ( const char * ) <S2SV_StartBug> nb10_hdr . file_name , sizeof ( res -> file_name ) - 1 ) ; <S2SV_EndBug> res -> file_name [ sizeof ( res -> file_name ) - 1 ] = 0 ; nb10_hdr . free ( ( struct SCV_NB10_HEADER * ) & nb10_hdr ) ; } else { bprintf ( \"CodeView<S2SV_blank>section<S2SV_blank>not<S2SV_blank>NB10<S2SV_blank>or<S2SV_blank>RSDS\\\\n\" ) ; return 0 ; } break ; default : return 0 ; } while ( i < 33 ) { res -> guidstr [ i ] = toupper ( ( int ) res -> guidstr [ i ] ) ; i ++ ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( dbg_data_len < 20 ) { eprintf ( \"Truncated<S2SV_blank>NB10<S2SV_blank>entry,<S2SV_blank>not<S2SV_blank>enough<S2SV_blank>data<S2SV_blank>to<S2SV_blank>parse\\\\n\" ) ; return 0 ; } SCV_NB10_HEADER nb10_hdr = { { 0 } } <S2SV_ModEnd> ; init_cv_nb10_header ( <S2SV_ModStart> age ) ; res -> file_name [ 0 ] = 0 ; if ( nb10_hdr . file_name ) { <S2SV_ModStart> 1 ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2636\n\n```\nCWE-399 static int nlmsg_populate_mdb_fill ( struct sk_buff * skb , struct net_device * dev , struct br_mdb_entry * entry , u32 pid , u32 seq , int type , unsigned int flags ) { struct nlmsghdr * nlh ; struct br_port_msg * bpm ; struct nlattr * nest , * nest2 ; nlh = nlmsg_put ( skb , pid , seq , type , sizeof ( * bpm ) , NLM_F_MULTI ) ; if ( ! nlh ) return - EMSGSIZE ; bpm = nlmsg_data ( nlh ) ; <S2SV_StartBug> bpm -> family = AF_BRIDGE ; <S2SV_EndBug> bpm -> ifindex = dev -> ifindex ; nest = nla_nest_start ( skb , MDBA_MDB ) ; if ( nest == NULL ) goto cancel ; nest2 = nla_nest_start ( skb , MDBA_MDB_ENTRY ) ; if ( nest2 == NULL ) goto end ; if ( nla_put ( skb , MDBA_MDB_ENTRY_INFO , sizeof ( * entry ) , entry ) ) goto end ; nla_nest_end ( skb , nest2 ) ; nla_nest_end ( skb , nest ) ; return nlmsg_end ( skb , nlh ) ; end : nla_nest_end ( skb , nest ) ; cancel : nlmsg_cancel ( skb , nlh ) ; return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nlh ) ; memset ( bpm , 0 , sizeof ( * bpm ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 asmlinkage void do_ade ( struct pt_regs * regs ) { unsigned int __user * pc ; mm_segment_t seg ; perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , <S2SV_StartBug> 1 , 0 , regs , regs -> cp0_badvaddr ) ; <S2SV_EndBug> if ( ( regs -> cp0_badvaddr == regs -> cp0_epc ) || ( regs -> cp0_epc & 0x1 ) ) goto sigbus ; pc = ( unsigned int __user * ) exception_epc ( regs ) ; if ( user_mode ( regs ) && ! test_thread_flag ( TIF_FIXADE ) ) goto sigbus ; if ( unaligned_action == UNALIGNED_ACTION_SIGNAL ) goto sigbus ; else if ( unaligned_action == UNALIGNED_ACTION_SHOW ) show_registers ( regs ) ; seg = get_fs ( ) ; if ( ! user_mode ( regs ) ) set_fs ( KERNEL_DS ) ; emulate_load_store_insn ( regs , ( void __user * ) regs -> cp0_badvaddr , pc ) ; set_fs ( seg ) ; return ; sigbus : die_if_kernel ( \"Kernel<S2SV_blank>unaligned<S2SV_blank>instruction<S2SV_blank>access\" , regs ) ; force_sig ( SIGBUS , current ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16790\n\n```\nCWE-125 static void test_bson_validate ( void ) { char filename [ 64 ] ; size_t offset ; bson_t * b ; int i ; bson_error_t error ; for ( i = 1 ; i <= 38 ; i ++ ) { bson_snprintf ( filename , sizeof filename , \"test%u.bson\" , i ) ; b = get_bson ( filename ) ; BSON_ASSERT ( bson_validate ( b , BSON_VALIDATE_NONE , & offset ) ) ; bson_destroy ( b ) ; } b = get_bson ( \"codewscope.bson\" ) ; BSON_ASSERT ( bson_validate ( b , BSON_VALIDATE_NONE , & offset ) ) ; bson_destroy ( b ) ; b = get_bson ( \"empty_key.bson\" ) ; BSON_ASSERT ( bson_validate ( b , BSON_VALIDATE_NONE | BSON_VALIDATE_UTF8 | BSON_VALIDATE_DOLLAR_KEYS | BSON_VALIDATE_DOT_KEYS , & offset ) ) ; bson_destroy ( b ) ; # define VALIDATE_TEST ( _filename , _flags , _offset , _flag , _msg ) b = get_bson ( _filename ) ; BSON_ASSERT ( ! bson_validate ( b , _flags , & offset ) ) ; ASSERT_CMPSIZE_T ( offset , == , ( size_t ) _offset ) ; BSON_ASSERT ( ! bson_validate_with_error ( b , _flags , & error ) ) ; ASSERT_ERROR_CONTAINS ( error , BSON_ERROR_INVALID , _flag , _msg ) ; bson_destroy ( b ) VALIDATE_TEST ( \"overflow2.bson\" , BSON_VALIDATE_NONE , 9 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"trailingnull.bson\" , BSON_VALIDATE_NONE , 14 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"dollarquery.bson\" , BSON_VALIDATE_DOLLAR_KEYS | BSON_VALIDATE_DOT_KEYS , 4 , BSON_VALIDATE_DOLLAR_KEYS , \"keys<S2SV_blank>cannot<S2SV_blank>begin<S2SV_blank>with<S2SV_blank>\\\\\"$\\\\\":<S2SV_blank>\\\\\"$query\\\\\"\" ) ; VALIDATE_TEST ( \"dotquery.bson\" , BSON_VALIDATE_DOLLAR_KEYS | BSON_VALIDATE_DOT_KEYS , 4 , BSON_VALIDATE_DOT_KEYS , \"keys<S2SV_blank>cannot<S2SV_blank>contain<S2SV_blank>\\\\\".\\\\\":<S2SV_blank>\\\\\"abc.def\\\\\"\" ) ; VALIDATE_TEST ( \"overflow3.bson\" , BSON_VALIDATE_NONE , 9 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"overflow3.bson\" , BSON_VALIDATE_UTF8 , 9 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"overflow4.bson\" , BSON_VALIDATE_NONE , 9 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"empty_key.bson\" , BSON_VALIDATE_EMPTY_KEYS , 4 , BSON_VALIDATE_EMPTY_KEYS , \"empty<S2SV_blank>key\" ) ; VALIDATE_TEST ( \"test40.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test41.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test42.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test43.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test44.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test45.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test46.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test47.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test48.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test49.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test50.bson\" , BSON_VALIDATE_NONE , 10 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>code-with-scope\" ) ; VALIDATE_TEST ( \"test51.bson\" , BSON_VALIDATE_NONE , 10 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>code-with-scope\" ) ; VALIDATE_TEST ( \"test52.bson\" , BSON_VALIDATE_NONE , 9 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test53.bson\" , BSON_VALIDATE_NONE , 6 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test54.bson\" , BSON_VALIDATE_NONE , 12 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ; <S2SV_StartBug> b = BCON_NEW ( \"my_dbref\" , <S2SV_EndBug> \"{\" , \"$ref\" , BCON_UTF8 ( \"collection\" ) , \"$id\" , BCON_INT32 ( 1 ) , \"}\" ) ; BSON_ASSERT ( bson_validate_with_error ( b , BSON_VALIDATE_NONE , & error ) ) ; BSON_ASSERT ( bson_validate_with_error ( b , BSON_VALIDATE_DOLLAR_KEYS , & error ) ) ; bson_destroy ( b ) ; b = BCON_NEW ( \"my_dbref\" , \"{\" , \"$id\" , BCON_INT32 ( 1 ) , \"}\" ) ; BSON_ASSERT ( bson_validate_with_error ( b , BSON_VALIDATE_NONE , & error ) ) ; BSON_ASSERT ( ! bson_validate_with_error ( b , BSON_VALIDATE_DOLLAR_KEYS , & error ) ) ; ASSERT_ERROR_CONTAINS ( error , BSON_ERROR_INVALID , BSON_VALIDATE_DOLLAR_KEYS , \"keys<S2SV_blank>cannot<S2SV_blank>begin<S2SV_blank>with<S2SV_blank>\\\\\"$\\\\\":<S2SV_blank>\\\\\"$id\\\\\"\" ) ; bson_destroy ( b ) ; b = BCON_NEW ( \"my_dbref\" , \"{\" , \"$ref\" , BCON_UTF8 ( \"collection\" ) , \"$ref\" , BCON_UTF8 ( \"collection\" ) , \"}\" ) ; BSON_ASSERT ( bson_validate_with_error ( b , BSON_VALIDATE_NONE , & error ) ) ; BSON_ASSERT ( ! bson_validate_with_error ( b , BSON_VALIDATE_DOLLAR_KEYS , & error ) ) ; ASSERT_ERROR_CONTAINS ( error , BSON_ERROR_INVALID , BSON_VALIDATE_DOLLAR_KEYS , \"keys<S2SV_blank>cannot<S2SV_blank>begin<S2SV_blank>with<S2SV_blank>\\\\\"$\\\\\":<S2SV_blank>\\\\\"$ref\\\\\"\" ) ; bson_destroy ( b ) ; b = BCON_NEW ( \"my_dbref\" , \"{\" , \"$ref\" , BCON_UTF8 ( \"collection\" ) , \"extra\" , BCON_INT32 ( 2 ) , \"$id\" , BCON_INT32 ( 1 ) , \"}\" ) ; BSON_ASSERT ( bson_validate_with_error ( b , BSON_VALIDATE_NONE , & error ) ) ; BSON_ASSERT ( ! bson_validate_with_error ( b , BSON_VALIDATE_DOLLAR_KEYS , & error ) ) ; ASSERT_ERROR_CONTAINS ( error , BSON_ERROR_INVALID , BSON_VALIDATE_DOLLAR_KEYS , \"invalid<S2SV_blank>key<S2SV_blank>within<S2SV_blank>DBRef<S2SV_blank>subdocument:<S2SV_blank>\\\\\"extra\\\\\"\" ) ; bson_destroy ( b ) ; # undef VALIDATE_TEST }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"corrupt<S2SV_blank>BSON\" ) ; VALIDATE_TEST ( \"test59.bson\" , BSON_VALIDATE_NONE , 9 , BSON_VALIDATE_NONE , \"corrupt<S2SV_blank>BSON\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static struct VP8D_COMP * create_decompressor ( VP8D_CONFIG * oxcf ) { VP8D_COMP * pbi = vpx_memalign ( 32 , sizeof ( VP8D_COMP ) ) ; if ( ! pbi ) return NULL ; <S2SV_StartBug> vpx_memset ( pbi , 0 , sizeof ( VP8D_COMP ) ) ; <S2SV_EndBug> if ( setjmp ( pbi -> common . error . jmp ) ) { pbi -> common . error . setjmp = 0 ; remove_decompressor ( pbi ) ; return 0 ; } pbi -> common . error . setjmp = 1 ; vp8_create_common ( & pbi -> common ) ; pbi -> common . current_video_frame = 0 ; pbi -> ready_for_new_data = 1 ; vp8cx_init_de_quantizer ( pbi ) ; vp8_loop_filter_init ( & pbi -> common ) ; pbi -> common . error . setjmp = 0 ; # if CONFIG_ERROR_CONCEALMENT pbi -> ec_enabled = oxcf -> error_concealment ; pbi -> overlaps = NULL ; # else <S2SV_StartBug> pbi -> ec_enabled = 0 ; <S2SV_EndBug> # endif pbi -> ec_active = 0 ; pbi -> decoded_key_frame = 0 ; pbi -> independent_partitions = 0 ; vp8_setup_block_dptrs ( & pbi -> mb ) ; return pbi ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return NULL ; memset <S2SV_ModEnd> ( pbi , <S2SV_ModStart> ; # else ( void ) oxcf ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5940\n\n```\nCWE-269 static void skel ( const char * homedir , uid_t u , gid_t g ) { char * fname ; if ( ! arg_shell_none && ( strcmp ( cfg . shell , \"/usr/bin/zsh\" ) == 0 || strcmp ( cfg . shell , \"/bin/zsh\" ) == 0 ) ) { if ( asprintf ( & fname , \"%s/.zshrc\" , homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( fname , & s ) == 0 ) return ; <S2SV_StartBug> if ( stat ( \"/etc/skel/.zshrc\" , & s ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> copy_file ( \"/etc/skel/.zshrc\" , fname , u , g , 0644 ) ; <S2SV_EndBug> fs_logger ( \"clone<S2SV_blank>/etc/skel/.zshrc\" ) ; } else { touch_file_as_user ( fname , u , g , 0644 ) ; fs_logger2 ( \"touch\" , fname ) ; } free ( fname ) ; } else if ( ! arg_shell_none && strcmp ( cfg . shell , \"/bin/csh\" ) == 0 ) { if ( asprintf ( & fname , \"%s/.cshrc\" , homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( fname , & s ) == 0 ) return ; <S2SV_StartBug> if ( stat ( \"/etc/skel/.cshrc\" , & s ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> copy_file ( \"/etc/skel/.cshrc\" , fname , u , g , 0644 ) ; <S2SV_EndBug> fs_logger ( \"clone<S2SV_blank>/etc/skel/.cshrc\" ) ; } else { touch_file_as_user ( fname , u , g , 0644 ) ; fs_logger2 ( \"touch\" , fname ) ; } free ( fname ) ; } else { if ( asprintf ( & fname , \"%s/.bashrc\" , homedir ) == - 1 ) errExit ( \"asprintf\" ) ; struct stat s ; if ( stat ( fname , & s ) == 0 ) return ; <S2SV_StartBug> if ( stat ( \"/etc/skel/.bashrc\" , & s ) == 0 ) { <S2SV_EndBug> <S2SV_StartBug> copy_file ( \"/etc/skel/.bashrc\" , fname , u , g , 0644 ) ; <S2SV_EndBug> fs_logger ( \"clone<S2SV_blank>/etc/skel/.bashrc\" ) ; } free ( fname ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( is_link ( fname ) ) { fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>%s<S2SV_blank>file\\\\n\" , fname ) ; exit ( 1 ) ; } if ( <S2SV_ModStart> 0 ) { copy_file_as_user <S2SV_ModEnd> ( \"/etc/skel/.zshrc\" , <S2SV_ModStart> ; if ( is_link ( fname ) ) { fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>%s<S2SV_blank>file\\\\n\" , fname ) ; exit ( 1 ) ; } if ( <S2SV_ModStart> 0 ) { copy_file_as_user <S2SV_ModEnd> ( \"/etc/skel/.cshrc\" , <S2SV_ModStart> ; if ( is_link ( fname ) ) { fprintf ( stderr , \"Error:<S2SV_blank>invalid<S2SV_blank>%s<S2SV_blank>file\\\\n\" , fname ) ; exit ( 1 ) ; } if ( <S2SV_ModStart> 0 ) { copy_file_as_user <S2SV_ModEnd> ( \"/etc/skel/.bashrc\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7500\n\n```\nCWE-59 rpmVerifyAttrs rpmfilesVerify ( rpmfiles fi , int ix , rpmVerifyAttrs omitMask ) { rpm_mode_t fmode = rpmfilesFMode ( fi , ix ) ; rpmfileAttrs fileAttrs = rpmfilesFFlags ( fi , ix ) ; rpmVerifyAttrs flags = rpmfilesVFlags ( fi , ix ) ; const char * fn = rpmfilesFN ( fi , ix ) ; struct stat sb ; rpmVerifyAttrs vfy = RPMVERIFY_NONE ; switch ( rpmfilesFState ( fi , ix ) ) { case RPMFILE_STATE_NETSHARED : case RPMFILE_STATE_NOTINSTALLED : goto exit ; break ; case RPMFILE_STATE_REPLACED : flags = RPMVERIFY_LSTATFAIL ; break ; case RPMFILE_STATE_WRONGCOLOR : flags &= ~ ( RPMVERIFY_FILEDIGEST | RPMVERIFY_FILESIZE | RPMVERIFY_MTIME | RPMVERIFY_RDEV ) ; break ; case RPMFILE_STATE_NORMAL : case RPMFILE_STATE_MISSING : break ; } if ( fn == NULL || lstat ( fn , & sb ) != 0 ) { vfy |= RPMVERIFY_LSTATFAIL ; goto exit ; } <S2SV_StartBug> if ( S_ISDIR ( fmode ) && S_ISLNK ( sb . st_mode ) && stat ( fn , & sb ) != 0 ) { <S2SV_EndBug> vfy |= RPMVERIFY_LSTATFAIL ; goto exit ; } if ( S_ISLNK ( sb . st_mode ) ) flags &= ~ ( RPMVERIFY_MODE ) ; else flags &= ~ ( RPMVERIFY_LINKTO ) ; if ( ! S_ISREG ( sb . st_mode ) ) flags &= ~ ( RPMVERIFY_FILEDIGEST | RPMVERIFY_FILESIZE | RPMVERIFY_MTIME | RPMVERIFY_CAPS ) ; if ( fileAttrs & RPMFILE_GHOST ) flags &= ~ ( RPMVERIFY_FILEDIGEST | RPMVERIFY_FILESIZE | RPMVERIFY_MTIME | RPMVERIFY_LINKTO ) ; flags &= ~ ( omitMask | RPMVERIFY_FAILURES ) ; if ( flags & RPMVERIFY_FILEDIGEST ) { const unsigned char * digest ; int algo ; size_t diglen ; if ( ( digest = rpmfilesFDigest ( fi , ix , & algo , & diglen ) ) ) { unsigned char fdigest [ diglen ] ; rpm_loff_t fsize ; if ( rpmDoDigest ( algo , fn , 0 , fdigest , & fsize ) ) { vfy |= ( RPMVERIFY_READFAIL | RPMVERIFY_FILEDIGEST ) ; } else { sb . st_size = fsize ; if ( memcmp ( fdigest , digest , diglen ) ) vfy |= RPMVERIFY_FILEDIGEST ; } } else { vfy |= RPMVERIFY_FILEDIGEST ; } } if ( flags & RPMVERIFY_LINKTO ) { char linkto [ 1024 + 1 ] ; int size = 0 ; if ( ( size = readlink ( fn , linkto , sizeof ( linkto ) - 1 ) ) == - 1 ) vfy |= ( RPMVERIFY_READLINKFAIL | RPMVERIFY_LINKTO ) ; else { const char * flink = rpmfilesFLink ( fi , ix ) ; linkto [ size ] = '\\\\0' ; if ( flink == NULL || ! rstreq ( linkto , flink ) ) vfy |= RPMVERIFY_LINKTO ; } } if ( flags & RPMVERIFY_FILESIZE ) { if ( sb . st_size != rpmfilesFSize ( fi , ix ) ) vfy |= RPMVERIFY_FILESIZE ; } if ( flags & RPMVERIFY_MODE ) { rpm_mode_t metamode = fmode ; rpm_mode_t filemode ; filemode = ( rpm_mode_t ) sb . st_mode ; if ( fileAttrs & RPMFILE_GHOST ) { metamode &= ~ 0xf000 ; filemode &= ~ 0xf000 ; } if ( metamode != filemode ) vfy |= RPMVERIFY_MODE ; # if WITH_ACL acl_t facl = acl_get_file ( fn , ACL_TYPE_ACCESS ) ; if ( facl ) { if ( acl_equiv_mode ( facl , NULL ) == 1 ) { vfy |= RPMVERIFY_MODE ; } acl_free ( facl ) ; } # endif } if ( flags & RPMVERIFY_RDEV ) { if ( S_ISCHR ( fmode ) != S_ISCHR ( sb . st_mode ) || S_ISBLK ( fmode ) != S_ISBLK ( sb . st_mode ) ) { vfy |= RPMVERIFY_RDEV ; } else if ( S_ISDEV ( fmode ) && S_ISDEV ( sb . st_mode ) ) { rpm_rdev_t st_rdev = ( sb . st_rdev & 0xffff ) ; rpm_rdev_t frdev = ( rpmfilesFRdev ( fi , ix ) & 0xffff ) ; if ( st_rdev != frdev ) vfy |= RPMVERIFY_RDEV ; } } # if WITH_CAP if ( flags & RPMVERIFY_CAPS ) { cap_t cap , fcap ; cap = cap_from_text ( rpmfilesFCaps ( fi , ix ) ) ; if ( ! cap ) { cap = cap_from_text ( \"=\" ) ; } fcap = cap_get_file ( fn ) ; if ( ! fcap ) { fcap = cap_from_text ( \"=\" ) ; } if ( cap_compare ( cap , fcap ) != 0 ) vfy |= RPMVERIFY_CAPS ; cap_free ( fcap ) ; cap_free ( cap ) ; } # endif if ( ( flags & RPMVERIFY_MTIME ) && ( sb . st_mtime != rpmfilesFMtime ( fi , ix ) ) ) { vfy |= RPMVERIFY_MTIME ; } if ( flags & RPMVERIFY_USER ) { const char * name = rpmugUname ( sb . st_uid ) ; const char * fuser = rpmfilesFUser ( fi , ix ) ; uid_t uid ; int namematch = 0 ; int idmatch = 0 ; if ( name && fuser ) namematch = rstreq ( name , fuser ) ; if ( fuser && rpmugUid ( fuser , & uid ) == 0 ) idmatch = ( uid == sb . st_uid ) ; if ( namematch != idmatch ) { rpmlog ( RPMLOG_WARNING , _ ( \"Duplicate<S2SV_blank>username<S2SV_blank>or<S2SV_blank>UID<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s\\\\n\" ) , fuser ) ; } if ( ! ( namematch || idmatch ) ) vfy |= RPMVERIFY_USER ; } if ( flags & RPMVERIFY_GROUP ) { const char * name = rpmugGname ( sb . st_gid ) ; const char * fgroup = rpmfilesFGroup ( fi , ix ) ; gid_t gid ; int namematch = 0 ; int idmatch = 0 ; if ( name && fgroup ) namematch = rstreq ( name , fgroup ) ; if ( fgroup && rpmugGid ( fgroup , & gid ) == 0 ) idmatch = ( gid == sb . st_gid ) ; if ( namematch != idmatch ) { rpmlog ( RPMLOG_WARNING , _ ( \"Duplicate<S2SV_blank>groupname<S2SV_blank>or<S2SV_blank>GID<S2SV_blank>for<S2SV_blank>group<S2SV_blank>%s\\\\n\" ) , fgroup ) ; } if ( ! ( namematch || idmatch ) ) vfy |= RPMVERIFY_GROUP ; } exit : return vfy ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . st_mode ) ) { struct stat dsb ; if ( stat ( fn , & dsb ) == 0 && S_ISDIR ( dsb . st_mode ) ) { uid_t fuid ; if ( sb . st_uid == 0 || ( rpmugUid ( rpmfilesFUser ( fi , ix ) , & fuid ) == 0 && sb . st_uid == fuid ) ) { sb = dsb ; } } <S2SV_ModEnd> } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> static int jas_iccputuint ( jas_stream_t * out , int n , ulonglong val ) <S2SV_EndBug> { int i ; int c ; for ( i = n ; i > 0 ; -- i ) { c = ( val >> ( 8 * ( i - 1 ) ) ) & 0xff ; if ( jas_stream_putc ( out , c ) == EOF ) return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int n , jas_ulonglong <S2SV_ModEnd> val ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_mod ( PyObject * obj , mod_ty * out , PyArena * arena ) { int isinstance ; PyObject * tmp = NULL ; if ( obj == Py_None ) { * out = NULL ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Module_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { <S2SV_StartBug> asdl_seq * body ; <S2SV_EndBug> if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Module\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Module<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"Module<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = Module ( body , arena ) ; <S2SV_EndBug> if ( * out == NULL ) goto failed ; return 0 ; } <S2SV_StartBug> isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Interactive_type ) ; <S2SV_EndBug> if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * body ; if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { <S2SV_StartBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Interactive\" ) ; <S2SV_EndBug> return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { <S2SV_StartBug> PyErr_Format ( PyExc_TypeError , \"Interactive<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; <S2SV_EndBug> goto failed ; } len = PyList_GET_SIZE ( tmp ) ; <S2SV_StartBug> body = _Py_asdl_seq_new ( len , arena ) ; <S2SV_EndBug> <S2SV_StartBug> if ( body == NULL ) goto failed ; <S2SV_EndBug> for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> stmt_ty val ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { <S2SV_StartBug> PyErr_SetString ( PyExc_RuntimeError , \"Interactive<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; <S2SV_EndBug> goto failed ; } <S2SV_StartBug> asdl_seq_SET ( body , i , val ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; } <S2SV_StartBug> * out = Interactive ( body , arena ) ; <S2SV_EndBug> if ( * out == NULL ) goto failed ; return 0 ; } <S2SV_StartBug> isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Expression_type ) ; <S2SV_EndBug> if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { <S2SV_StartBug> expr_ty body ; <S2SV_EndBug> if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { <S2SV_StartBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Expression\" ) ; <S2SV_EndBug> return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & body , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = Expression ( body , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Suite_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * body ; if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Suite\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { <S2SV_StartBug> PyErr_Format ( PyExc_TypeError , \"Suite<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; <S2SV_EndBug> goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { <S2SV_StartBug> PyErr_SetString ( PyExc_RuntimeError , \"Suite<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; <S2SV_EndBug> goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = Suite ( body , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>some<S2SV_blank>sort<S2SV_blank>of<S2SV_blank>mod,<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%R\" , obj ) ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> asdl_seq * body ; asdl_seq * type_ignores <S2SV_ModStart> ) ; } if ( _PyObject_LookupAttrId <S2SV_ModEnd> ( obj , <S2SV_ModStart> ( obj , & PyId_type_ignores <S2SV_ModEnd> , & tmp <S2SV_ModStart> ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"type_ignores\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Module\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> ( PyExc_TypeError , \"Module<S2SV_blank>field<S2SV_blank>\\\\\"type_ignores\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" <S2SV_ModEnd> , tmp -> <S2SV_ModStart> tmp ) ; type_ignores <S2SV_ModEnd> = _Py_asdl_seq_new ( <S2SV_ModStart> ; if ( type_ignores <S2SV_ModEnd> == NULL ) <S2SV_ModStart> ++ ) { type_ignore_ty <S2SV_ModEnd> val ; res <S2SV_ModStart> ; res = obj2ast_type_ignore <S2SV_ModEnd> ( PyList_GET_ITEM ( <S2SV_ModStart> ( PyExc_RuntimeError , \"Module<S2SV_blank>field<S2SV_blank>\\\\\"type_ignores\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> } asdl_seq_SET ( type_ignores <S2SV_ModEnd> , i , <S2SV_ModStart> * out = Module ( body , type_ignores <S2SV_ModEnd> , arena ) <S2SV_ModStart> PyObject * ) Interactive_type <S2SV_ModEnd> ) ; if <S2SV_ModStart> isinstance ) { asdl_seq * <S2SV_ModEnd> body ; if <S2SV_ModStart> ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Interactive\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> ( PyExc_TypeError , \"Interactive<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" <S2SV_ModEnd> , tmp -> <S2SV_ModStart> ( PyExc_RuntimeError , \"Interactive<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( body , i , val ) ; } Py_CLEAR ( tmp ) ; } * out = Interactive ( body , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Expression_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { expr_ty body ; if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Expression\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & body , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = Expression ( body , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) FunctionType_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * argtypes ; expr_ty returns ; if ( _PyObject_LookupAttrId ( obj , & PyId_argtypes , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"argtypes\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionType\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"FunctionType<S2SV_blank>field<S2SV_blank>\\\\\"argtypes\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; argtypes = _Py_asdl_seq_new ( len , arena ) ; if ( argtypes == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { expr_ty val ; res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"FunctionType<S2SV_blank>field<S2SV_blank>\\\\\"argtypes\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } asdl_seq_SET ( argtypes , i , val ) ; } Py_CLEAR ( tmp ) ; } if ( _PyObject_LookupAttrId ( obj , & PyId_returns , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"returns\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>FunctionType\" ) ; return 1 ; } else { int res ; res = obj2ast_expr ( tmp , & returns , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; } * out = FunctionType ( argtypes , returns , arena ) ; if ( * out == NULL ) goto failed ; return 0 ; } isinstance = PyObject_IsInstance ( obj , ( PyObject * ) Suite_type ) ; if ( isinstance == - 1 ) { return 1 ; } if ( isinstance ) { asdl_seq * body ; if ( _PyObject_LookupAttrId ( obj , & PyId_body , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>Suite\" ) ; return 1 ; } else { int res ; Py_ssize_t len ; Py_ssize_t i ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"Suite<S2SV_blank>field<S2SV_blank>\\\\\"body\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; body = _Py_asdl_seq_new ( len , arena ) ; if ( body == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { stmt_ty val ; res = obj2ast_stmt ( PyList_GET_ITEM ( tmp , i ) , & val , arena ) ; if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18232\n\n```\nCWE-000 void sas_init_disc ( struct sas_discovery * disc , struct asd_sas_port * port ) { int i ; static const work_func_t sas_event_fns [ DISC_NUM_EVENTS ] = { [ DISCE_DISCOVER_DOMAIN ] = sas_discover_domain , [ DISCE_REVALIDATE_DOMAIN ] = sas_revalidate_domain , <S2SV_StartBug> [ DISCE_PROBE ] = sas_probe_devices , <S2SV_EndBug> [ DISCE_SUSPEND ] = sas_suspend_devices , <S2SV_StartBug> [ DISCE_RESUME ] = sas_resume_devices , <S2SV_EndBug> [ DISCE_DESTRUCT ] = sas_destruct_devices , } ; disc -> pending = 0 ; for ( i = 0 ; i < DISC_NUM_EVENTS ; i ++ ) { INIT_SAS_WORK ( & disc -> disc_work [ i ] . work , sas_event_fns [ i ] ) ; disc -> disc_work [ i ] . port = port ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sas_revalidate_domain , [ <S2SV_ModEnd> DISCE_SUSPEND ] = <S2SV_ModStart> ] = sas_resume_devices <S2SV_ModEnd> , } ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5232\n\n```\nCWE-362 fm_mgr_config_errno_t fm_mgr_config_init ( OUT p_fm_config_conx_hdlt * p_hdl , IN int instance , OPTIONAL IN char * rem_address , OPTIONAL IN char * community ) { fm_config_conx_hdl * hdl ; fm_mgr_config_errno_t res = FM_CONF_OK ; if ( ( hdl = calloc ( 1 , sizeof ( fm_config_conx_hdl ) ) ) == NULL ) { res = FM_CONF_NO_MEM ; goto cleanup ; } hdl -> instance = instance ; * p_hdl = hdl ; if ( ! rem_address || ( strcmp ( rem_address , \"localhost\" ) == 0 ) ) { if ( fm_mgr_config_mgr_connect ( hdl , FM_MGR_SM ) == FM_CONF_INIT_ERR ) { res = FM_CONF_INIT_ERR ; goto cleanup ; } if ( fm_mgr_config_mgr_connect ( hdl , FM_MGR_PM ) == FM_CONF_INIT_ERR ) { res = FM_CONF_INIT_ERR ; goto cleanup ; } if ( fm_mgr_config_mgr_connect ( hdl , FM_MGR_FE ) == FM_CONF_INIT_ERR ) { res = FM_CONF_INIT_ERR ; goto cleanup ; } } <S2SV_StartBug> return res ; <S2SV_EndBug> cleanup : if ( hdl ) { free ( hdl ) ; hdl = NULL ; } return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } cleanup : <S2SV_ModEnd> return res ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000127\n\n```\nCWE-190 static inline void process_get_command ( conn * c , token_t * tokens , size_t ntokens , bool return_cas ) { char * key ; size_t nkey ; int i = 0 ; item * it ; token_t * key_token = & tokens [ KEY_TOKEN ] ; char * suffix ; assert ( c != NULL ) ; do { while ( key_token -> length != 0 ) { key = key_token -> value ; nkey = key_token -> length ; if ( nkey > KEY_MAX_LENGTH ) { out_string ( c , \"CLIENT_ERROR<S2SV_blank>bad<S2SV_blank>command<S2SV_blank>line<S2SV_blank>format\" ) ; while ( i -- > 0 ) { item_remove ( * ( c -> ilist + i ) ) ; } return ; } <S2SV_StartBug> it = item_get ( key , nkey , c , DO_UPDATE ) ; <S2SV_EndBug> if ( settings . detail_enabled ) { stats_prefix_record_get ( key , nkey , NULL != it ) ; } if ( it ) { if ( i >= c -> isize ) { item * * new_list = realloc ( c -> ilist , sizeof ( item * ) * c -> isize * 2 ) ; if ( new_list ) { c -> isize *= 2 ; c -> ilist = new_list ; } else { STATS_LOCK ( ) ; stats . malloc_fails ++ ; STATS_UNLOCK ( ) ; item_remove ( it ) ; break ; } } if ( return_cas || ! settings . inline_ascii_response ) { MEMCACHED_COMMAND_GET ( c -> sfd , ITEM_key ( it ) , it -> nkey , it -> nbytes , ITEM_get_cas ( it ) ) ; if ( i >= c -> suffixsize ) { char * * new_suffix_list = realloc ( c -> suffixlist , sizeof ( char * ) * c -> suffixsize * 2 ) ; if ( new_suffix_list ) { c -> suffixsize *= 2 ; c -> suffixlist = new_suffix_list ; } else { STATS_LOCK ( ) ; stats . malloc_fails ++ ; STATS_UNLOCK ( ) ; item_remove ( it ) ; break ; } } suffix = do_cache_alloc ( c -> thread -> suffix_cache ) ; if ( suffix == NULL ) { STATS_LOCK ( ) ; stats . malloc_fails ++ ; STATS_UNLOCK ( ) ; out_of_memory ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>making<S2SV_blank>CAS<S2SV_blank>suffix\" ) ; item_remove ( it ) ; while ( i -- > 0 ) { item_remove ( * ( c -> ilist + i ) ) ; } return ; } * ( c -> suffixlist + i ) = suffix ; int suffix_len = make_ascii_get_suffix ( suffix , it , return_cas ) ; if ( add_iov ( c , \"VALUE<S2SV_blank>\" , 6 ) != 0 || add_iov ( c , ITEM_key ( it ) , it -> nkey ) != 0 || ( settings . inline_ascii_response && add_iov ( c , ITEM_suffix ( it ) , it -> nsuffix - 2 ) != 0 ) || add_iov ( c , suffix , suffix_len ) != 0 ) { item_remove ( it ) ; break ; } if ( ( it -> it_flags & ITEM_CHUNKED ) == 0 ) { add_iov ( c , ITEM_data ( it ) , it -> nbytes ) ; } else if ( add_chunked_item_iovs ( c , it , it -> nbytes ) != 0 ) { item_remove ( it ) ; break ; } } else { MEMCACHED_COMMAND_GET ( c -> sfd , ITEM_key ( it ) , it -> nkey , it -> nbytes , ITEM_get_cas ( it ) ) ; if ( add_iov ( c , \"VALUE<S2SV_blank>\" , 6 ) != 0 || add_iov ( c , ITEM_key ( it ) , it -> nkey ) != 0 ) { item_remove ( it ) ; break ; } if ( ( it -> it_flags & ITEM_CHUNKED ) == 0 ) { if ( add_iov ( c , ITEM_suffix ( it ) , it -> nsuffix + it -> nbytes ) != 0 ) { item_remove ( it ) ; break ; } } else if ( add_iov ( c , ITEM_suffix ( it ) , it -> nsuffix ) != 0 || add_chunked_item_iovs ( c , it , it -> nbytes ) != 0 ) { item_remove ( it ) ; break ; } } if ( settings . verbose > 1 ) { int ii ; fprintf ( stderr , \">%d<S2SV_blank>sending<S2SV_blank>key<S2SV_blank>\" , c -> sfd ) ; for ( ii = 0 ; ii < it -> nkey ; ++ ii ) { fprintf ( stderr , \"%c\" , key [ ii ] ) ; } fprintf ( stderr , \"\\\\n\" ) ; } pthread_mutex_lock ( & c -> thread -> stats . mutex ) ; c -> thread -> stats . slab_stats [ ITEM_clsid ( it ) ] . get_hits ++ ; c -> thread -> stats . get_cmds ++ ; pthread_mutex_unlock ( & c -> thread -> stats . mutex ) ; * ( c -> ilist + i ) = it ; i ++ ; } else { pthread_mutex_lock ( & c -> thread -> stats . mutex ) ; c -> thread -> stats . get_misses ++ ; c -> thread -> stats . get_cmds ++ ; pthread_mutex_unlock ( & c -> thread -> stats . mutex ) ; MEMCACHED_COMMAND_GET ( c -> sfd , key , nkey , - 1 , 0 ) ; } key_token ++ ; } if ( key_token -> value != NULL ) { ntokens = tokenize_command ( key_token -> value , tokens , MAX_TOKENS ) ; key_token = tokens ; } } while ( key_token -> value != NULL ) ; c -> icurr = c -> ilist ; c -> ileft = i ; if ( return_cas || ! settings . inline_ascii_response ) { c -> suffixcurr = c -> suffixlist ; c -> suffixleft = i ; } if ( settings . verbose > 1 ) fprintf ( stderr , \">%d<S2SV_blank>END\\\\n\" , c -> sfd ) ; if ( key_token -> value != NULL || add_iov ( c , \"END\\\\r\\\\n\" , 5 ) != 0 || ( IS_UDP ( c -> transport ) && build_udp_headers ( c ) != 0 ) ) { out_of_memory ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>writing<S2SV_blank>get<S2SV_blank>response\" ) ; } else { conn_set_state ( c , conn_mwrite ) ; c -> msgcurr = 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } it = limited_get <S2SV_ModEnd> ( key , <S2SV_ModStart> nkey , c <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6156\n\n```\nCWE-362 static long ec_device_ioctl_xcmd ( struct cros_ec_dev * ec , void __user * arg ) { long ret ; struct cros_ec_command u_cmd ; struct cros_ec_command * s_cmd ; if ( copy_from_user ( & u_cmd , arg , sizeof ( u_cmd ) ) ) return - EFAULT ; if ( ( u_cmd . outsize > EC_MAX_MSG_BYTES ) || ( u_cmd . insize > EC_MAX_MSG_BYTES ) ) return - EINVAL ; s_cmd = kmalloc ( sizeof ( * s_cmd ) + max ( u_cmd . outsize , u_cmd . insize ) , GFP_KERNEL ) ; if ( ! s_cmd ) return - ENOMEM ; if ( copy_from_user ( s_cmd , arg , sizeof ( * s_cmd ) + u_cmd . outsize ) ) { ret = - EFAULT ; goto exit ; } <S2SV_StartBug> s_cmd -> command += ec -> cmd_offset ; <S2SV_EndBug> ret = cros_ec_cmd_xfer ( ec -> ec_dev , s_cmd ) ; if ( ret < 0 ) goto exit ; <S2SV_StartBug> if ( copy_to_user ( arg , s_cmd , sizeof ( * s_cmd ) + u_cmd . insize ) ) <S2SV_EndBug> ret = - EFAULT ; exit : kfree ( s_cmd ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> exit ; } if ( u_cmd . outsize != s_cmd -> outsize || u_cmd . insize != s_cmd -> insize ) { ret = - EINVAL ; goto exit ; } <S2SV_ModStart> s_cmd ) + s_cmd -> <S2SV_ModEnd> insize ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13687\n\n```\nCWE-125 u_int chdlc_print ( netdissect_options * ndo , register const u_char * p , u_int length ) { u_int proto ; <S2SV_StartBug> proto = EXTRACT_16BITS ( & p [ 2 ] ) ; <S2SV_EndBug> if ( ndo -> ndo_eflag ) { ND_PRINT ( ( ndo , \"%s,<S2SV_blank>ethertype<S2SV_blank>%s<S2SV_blank>(0x%04x),<S2SV_blank>length<S2SV_blank>%u:<S2SV_blank>\" , tok2str ( chdlc_cast_values , \"0x%02x\" , p [ 0 ] ) , tok2str ( ethertype_values , \"Unknown\" , proto ) , proto , length ) ) ; } length -= CHDLC_HDRLEN ; p += CHDLC_HDRLEN ; switch ( proto ) { case ETHERTYPE_IP : ip_print ( ndo , p , length ) ; break ; case ETHERTYPE_IPV6 : ip6_print ( ndo , p , length ) ; break ; case CHDLC_TYPE_SLARP : chdlc_slarp_print ( ndo , p , length ) ; break ; # if 0 case CHDLC_TYPE_CDP : chdlc_cdp_print ( p , length ) ; break ; # endif case ETHERTYPE_MPLS : case ETHERTYPE_MPLS_MULTI : mpls_print ( ndo , p , length ) ; break ; case ETHERTYPE_ISO : <S2SV_StartBug> if ( * ( p + 1 ) == 0x81 || <S2SV_EndBug> * ( p + 1 ) == 0x82 || * ( p + 1 ) == 0x83 ) isoclns_print ( ndo , p + 1 , length - 1 , ndo -> ndo_snapend - p - 1 ) ; else isoclns_print ( ndo , p , length , ndo -> ndo_snapend - p ) ; break ; default : if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"unknown<S2SV_blank>CHDLC<S2SV_blank>protocol<S2SV_blank>(0x%04x)\" , proto ) ) ; break ; } return ( CHDLC_HDRLEN ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u_int proto ; const u_char * bp = p ; if ( length < CHDLC_HDRLEN ) goto trunc ; ND_TCHECK2 ( * p , CHDLC_HDRLEN ) ; <S2SV_ModStart> : if ( length < 2 ) goto trunc ; ND_TCHECK_16BITS ( p ) ; if ( <S2SV_ModStart> CHDLC_HDRLEN ) ; trunc : ND_PRINT ( ( ndo , \"[|chdlc]\" ) ) ; return ndo -> ndo_snapend - bp ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 NOEXPORT char * parse_service_option ( CMD cmd , SERVICE_OPTIONS * * section_ptr , char * opt , char * arg ) { SERVICE_OPTIONS * section ; int endpoints = 0 ; # ifndef USE_WIN32 struct group * gr ; struct passwd * pw ; # endif section = section_ptr ? * section_ptr : NULL ; if ( cmd == CMD_SET_DEFAULTS || cmd == CMD_SET_COPY ) { section -> ref = 1 ; <S2SV_StartBug> } else if ( cmd == CMD_FREE ) { <S2SV_EndBug> <S2SV_StartBug> if ( section == & service_options || section == & new_service_options ) <S2SV_EndBug> <S2SV_StartBug> s_log ( LOG_DEBUG , \"Deallocating<S2SV_blank>section<S2SV_blank>defaults\" ) ; <S2SV_EndBug> else s_log ( LOG_DEBUG , \"Deallocating<S2SV_blank>section<S2SV_blank>[%s]\" , section -> servname ) ; } else if ( cmd == CMD_PRINT_DEFAULTS || cmd == CMD_PRINT_HELP ) { s_log ( LOG_NOTICE , \"<S2SV_blank>\" ) ; s_log ( LOG_NOTICE , \"Service-level<S2SV_blank>options:\" ) ; } switch ( cmd ) { case CMD_SET_DEFAULTS : addrlist_clear ( & section -> local_addr , 1 ) ; section -> local_fd = NULL ; break ; case CMD_SET_COPY : addrlist_clear ( & section -> local_addr , 1 ) ; section -> local_fd = NULL ; name_list_dup ( & section -> local_addr . names , new_service_options . local_addr . names ) ; break ; case CMD_FREE : name_list_free ( section -> local_addr . names ) ; str_free ( section -> local_addr . addr ) ; str_free ( section -> local_fd ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"accept\" ) ) break ; section -> option . accept = 1 ; name_list_append ( & section -> local_addr . names , arg ) ; return NULL ; case CMD_INITIALIZE : if ( section -> local_addr . names ) { unsigned i ; if ( ! addrlist_resolve ( & section -> local_addr ) ) return \"Cannot<S2SV_blank>resolve<S2SV_blank>accept<S2SV_blank>target\" ; section -> local_fd = str_alloc_detached ( section -> local_addr . num * sizeof ( SOCKET ) ) ; for ( i = 0 ; i < section -> local_addr . num ; ++ i ) section -> local_fd [ i ] = INVALID_SOCKET ; ++ endpoints ; } break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>[host:]port<S2SV_blank>accept<S2SV_blank>connections<S2SV_blank>on<S2SV_blank>specified<S2SV_blank>host:port\" , \"accept\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : # if 0 section -> ca_dir = ( char * ) X509_get_default_cert_dir ( ) ; # endif section -> ca_dir = NULL ; break ; case CMD_SET_COPY : section -> ca_dir = str_dup_detached ( new_service_options . ca_dir ) ; break ; case CMD_FREE : str_free ( section -> ca_dir ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"CApath\" ) ) break ; str_free ( section -> ca_dir ) ; if ( arg [ 0 ] ) section -> ca_dir = str_dup_detached ( arg ) ; else section -> ca_dir = NULL ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : # if 0 s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"CApath\" , section -> ca_dir ? section -> ca_dir : \"(none)\" ) ; # endif break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>CA<S2SV_blank>certificate<S2SV_blank>directory<S2SV_blank>for<S2SV_blank>\\'verify\\'<S2SV_blank>option\" , \"CApath\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : # if 0 section -> ca_file = ( char * ) X509_get_default_certfile ( ) ; # endif section -> ca_file = NULL ; break ; case CMD_SET_COPY : section -> ca_file = str_dup_detached ( new_service_options . ca_file ) ; break ; case CMD_FREE : str_free ( section -> ca_file ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"CAfile\" ) ) break ; str_free ( section -> ca_file ) ; if ( arg [ 0 ] ) section -> ca_file = str_dup_detached ( arg ) ; else section -> ca_file = NULL ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : # if 0 s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"CAfile\" , section -> ca_file ? section -> ca_file : \"(none)\" ) ; # endif break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>CA<S2SV_blank>certificate<S2SV_blank>file<S2SV_blank>for<S2SV_blank>\\'verify\\'<S2SV_blank>option\" , \"CAfile\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> cert = NULL ; break ; case CMD_SET_COPY : section -> cert = str_dup_detached ( new_service_options . cert ) ; break ; case CMD_FREE : str_free ( section -> cert ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"cert\" ) ) break ; str_free ( section -> cert ) ; section -> cert = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : # ifndef OPENSSL_NO_PSK if ( section -> psk_keys ) break ; # endif # ifndef OPENSSL_NO_ENGINE if ( section -> engine ) break ; # endif if ( ! section -> option . client && ! section -> cert ) return \"TLS<S2SV_blank>server<S2SV_blank>needs<S2SV_blank>a<S2SV_blank>certificate\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>certificate<S2SV_blank>chain\" , \"cert\" ) ; break ; } # if OPENSSL_VERSION_NUMBER >= 0x10002000L switch ( cmd ) { case CMD_SET_DEFAULTS : section -> check_email = NULL ; break ; case CMD_SET_COPY : name_list_dup ( & section -> check_email , new_service_options . check_email ) ; break ; case CMD_FREE : name_list_free ( section -> check_email ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"checkEmail\" ) ) break ; name_list_append ( & section -> check_email , arg ) ; return NULL ; case CMD_INITIALIZE : if ( section -> check_email && ! section -> option . verify_chain && ! section -> option . verify_peer ) return \"Either<S2SV_blank>\\\\\"verifyChain\\\\\"<S2SV_blank>or<S2SV_blank>\\\\\"verifyPeer\\\\\"<S2SV_blank>has<S2SV_blank>to<S2SV_blank>be<S2SV_blank>enabled\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>peer<S2SV_blank>certificate<S2SV_blank>email<S2SV_blank>address\" , \"checkEmail\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> check_host = NULL ; break ; case CMD_SET_COPY : name_list_dup ( & section -> check_host , new_service_options . check_host ) ; break ; case CMD_FREE : name_list_free ( section -> check_host ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"checkHost\" ) ) break ; name_list_append ( & section -> check_host , arg ) ; return NULL ; case CMD_INITIALIZE : if ( section -> check_host && ! section -> option . verify_chain && ! section -> option . verify_peer ) return \"Either<S2SV_blank>\\\\\"verifyChain\\\\\"<S2SV_blank>or<S2SV_blank>\\\\\"verifyPeer\\\\\"<S2SV_blank>has<S2SV_blank>to<S2SV_blank>be<S2SV_blank>enabled\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>peer<S2SV_blank>certificate<S2SV_blank>host<S2SV_blank>name<S2SV_blank>pattern\" , \"checkHost\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> check_ip = NULL ; break ; case CMD_SET_COPY : name_list_dup ( & section -> check_ip , new_service_options . check_ip ) ; break ; case CMD_FREE : name_list_free ( section -> check_ip ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"checkIP\" ) ) break ; name_list_append ( & section -> check_ip , arg ) ; return NULL ; case CMD_INITIALIZE : if ( section -> check_ip && ! section -> option . verify_chain && ! section -> option . verify_peer ) return \"Either<S2SV_blank>\\\\\"verifyChain\\\\\"<S2SV_blank>or<S2SV_blank>\\\\\"verifyPeer\\\\\"<S2SV_blank>has<S2SV_blank>to<S2SV_blank>be<S2SV_blank>enabled\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>peer<S2SV_blank>certificate<S2SV_blank>IP<S2SV_blank>address\" , \"checkIP\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> cipher_list = NULL ; break ; case CMD_SET_COPY : section -> cipher_list = str_dup_detached ( new_service_options . cipher_list ) ; break ; case CMD_FREE : str_free ( section -> cipher_list ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"ciphers\" ) ) break ; str_free ( section -> cipher_list ) ; section -> cipher_list = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : if ( ! section -> cipher_list ) { # ifdef USE_FIPS if ( new_global_options . option . fips ) section -> cipher_list = str_dup_detached ( \"FIPS\" ) ; else # endif section -> cipher_list = str_dup_detached ( stunnel_cipher_list ) ; } break ; case CMD_PRINT_DEFAULTS : # ifdef USE_FIPS s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s<S2SV_blank>%s\" , \"ciphers\" , \"FIPS\" , \"(with<S2SV_blank>\\\\\"fips<S2SV_blank>=<S2SV_blank>yes\\\\\")\" ) ; s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s<S2SV_blank>%s\" , \"ciphers\" , stunnel_cipher_list , \"(with<S2SV_blank>\\\\\"fips<S2SV_blank>=<S2SV_blank>no\\\\\")\" ) ; # else s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"ciphers\" , stunnel_cipher_list ) ; # endif break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>permitted<S2SV_blank>ciphers<S2SV_blank>for<S2SV_blank>TLS<S2SV_blank>1.2<S2SV_blank>or<S2SV_blank>older\" , \"ciphers\" ) ; break ; } # ifndef OPENSSL_NO_TLS1_3 switch ( cmd ) { case CMD_SET_DEFAULTS : section -> ciphersuites = NULL ; break ; case CMD_SET_COPY : section -> ciphersuites = str_dup_detached ( new_service_options . ciphersuites ) ; break ; case CMD_FREE : str_free ( section -> ciphersuites ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"ciphersuites\" ) ) break ; str_free ( section -> ciphersuites ) ; section -> ciphersuites = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : if ( ! section -> ciphersuites ) { section -> ciphersuites = str_dup_detached ( stunnel_ciphersuites ) ; } break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s<S2SV_blank>%s\" , \"ciphersuites\" , stunnel_ciphersuites , \"(with<S2SV_blank>TLSv1.3)\" ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>permitted<S2SV_blank>ciphersuites<S2SV_blank>for<S2SV_blank>TLS<S2SV_blank>1.3\" , \"ciphersuites\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . client = 0 ; break ; case CMD_SET_COPY : section -> option . client = new_service_options . option . client ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"client\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . client = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . client = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>client<S2SV_blank>mode<S2SV_blank>(remote<S2SV_blank>service<S2SV_blank>uses<S2SV_blank>TLS)\" , \"client\" ) ; break ; } # if OPENSSL_VERSION_NUMBER >= 0x10002000L switch ( cmd ) { case CMD_SET_DEFAULTS : section -> config = NULL ; break ; case CMD_SET_COPY : name_list_dup ( & section -> config , new_service_options . config ) ; break ; case CMD_FREE : name_list_free ( section -> config ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"config\" ) ) break ; name_list_append ( & section -> config , arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>command[:parameter]<S2SV_blank>to<S2SV_blank>execute\" , \"config\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : addrlist_clear ( & section -> connect_addr , 0 ) ; section -> connect_session = NULL ; break ; case CMD_SET_COPY : addrlist_clear ( & section -> connect_addr , 0 ) ; section -> connect_session = NULL ; name_list_dup ( & section -> connect_addr . names , new_service_options . connect_addr . names ) ; break ; case CMD_FREE : name_list_free ( section -> connect_addr . names ) ; str_free ( section -> connect_addr . addr ) ; str_free ( section -> connect_session ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"connect\" ) ) break ; name_list_append ( & section -> connect_addr . names , arg ) ; return NULL ; case CMD_INITIALIZE : if ( section -> connect_addr . names ) { if ( ! section -> option . delayed_lookup && ! addrlist_resolve ( & section -> connect_addr ) ) { s_log ( LOG_INFO , \"Cannot<S2SV_blank>resolve<S2SV_blank>connect<S2SV_blank>target<S2SV_blank>-<S2SV_blank>delaying<S2SV_blank>DNS<S2SV_blank>lookup\" ) ; section -> connect_addr . num = 0 ; section -> redirect_addr . num = 0 ; section -> option . delayed_lookup = 1 ; } if ( section -> option . client ) section -> connect_session = str_alloc_detached ( section -> connect_addr . num * sizeof ( SSL_SESSION * ) ) ; ++ endpoints ; } break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>[host:]port<S2SV_blank>to<S2SV_blank>connect\" , \"connect\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> crl_dir = NULL ; break ; case CMD_SET_COPY : section -> crl_dir = str_dup_detached ( new_service_options . crl_dir ) ; break ; case CMD_FREE : str_free ( section -> crl_dir ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"CRLpath\" ) ) break ; str_free ( section -> crl_dir ) ; if ( arg [ 0 ] ) section -> crl_dir = str_dup_detached ( arg ) ; else section -> crl_dir = NULL ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>CRL<S2SV_blank>directory\" , \"CRLpath\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> crl_file = NULL ; break ; case CMD_SET_COPY : section -> crl_file = str_dup_detached ( new_service_options . crl_file ) ; break ; case CMD_FREE : str_free ( section -> crl_file ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"CRLfile\" ) ) break ; str_free ( section -> crl_file ) ; if ( arg [ 0 ] ) section -> crl_file = str_dup_detached ( arg ) ; else section -> crl_file = NULL ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>CRL<S2SV_blank>file\" , \"CRLfile\" ) ; break ; } # ifndef OPENSSL_NO_ECDH switch ( cmd ) { case CMD_SET_DEFAULTS : section -> curves = str_dup_detached ( DEFAULT_CURVES ) ; break ; case CMD_SET_COPY : section -> curves = str_dup_detached ( new_service_options . curves ) ; break ; case CMD_FREE : str_free ( section -> curves ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"curves\" ) && strcasecmp ( opt , \"curve\" ) ) break ; str_free ( section -> curves ) ; section -> curves = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"curves\" , DEFAULT_CURVES ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>ECDH<S2SV_blank>curve<S2SV_blank>names\" , \"curves\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> log_level = LOG_NOTICE ; # if ! defined ( USE_WIN32 ) && ! defined ( __vms ) new_global_options . log_facility = LOG_DAEMON ; # endif break ; case CMD_SET_COPY : section -> log_level = new_service_options . log_level ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"debug\" ) ) break ; return parse_debug_level ( arg , section ) ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : # if ! defined ( USE_WIN32 ) && ! defined ( __vms ) s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"debug\" , \"daemon.notice\" ) ; # else s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"debug\" , \"notice\" ) ; # endif break ; case CMD_PRINT_HELP : # if ! defined ( USE_WIN32 ) && ! defined ( __vms ) s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>[facility].level<S2SV_blank>(e.g.<S2SV_blank>daemon.info)\" , \"debug\" ) ; # else s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>level<S2SV_blank>(e.g.<S2SV_blank>info)\" , \"debug\" ) ; # endif break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . delayed_lookup = 0 ; break ; case CMD_SET_COPY : section -> option . delayed_lookup = new_service_options . option . delayed_lookup ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"delay\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . delayed_lookup = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . delayed_lookup = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>delay<S2SV_blank>DNS<S2SV_blank>lookup<S2SV_blank>for<S2SV_blank>\\'connect\\'<S2SV_blank>option\" , \"delay\" ) ; break ; } # ifndef OPENSSL_NO_ENGINE switch ( cmd ) { case CMD_SET_DEFAULTS : break ; case CMD_SET_COPY : section -> engine = new_service_options . engine ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"engineId\" ) ) break ; section -> engine = engine_get_by_id ( arg ) ; if ( ! section -> engine ) return \"Engine<S2SV_blank>ID<S2SV_blank>not<S2SV_blank>found\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>ID<S2SV_blank>of<S2SV_blank>engine<S2SV_blank>to<S2SV_blank>read<S2SV_blank>the<S2SV_blank>key<S2SV_blank>from\" , \"engineId\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : break ; case CMD_SET_COPY : section -> engine = new_service_options . engine ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"engineNum\" ) ) break ; { char * tmp_str ; int tmp_int = ( int ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>engine<S2SV_blank>number\" ; section -> engine = engine_get_by_num ( tmp_int - 1 ) ; } if ( ! section -> engine ) return \"Illegal<S2SV_blank>engine<S2SV_blank>number\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>number<S2SV_blank>of<S2SV_blank>engine<S2SV_blank>to<S2SV_blank>read<S2SV_blank>the<S2SV_blank>key<S2SV_blank>from\" , \"engineNum\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> exec_name = NULL ; break ; case CMD_SET_COPY : section -> exec_name = str_dup_detached ( new_service_options . exec_name ) ; break ; case CMD_FREE : str_free ( section -> exec_name ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"exec\" ) ) break ; str_free ( section -> exec_name ) ; section -> exec_name = str_dup_detached ( arg ) ; # ifdef USE_WIN32 section -> exec_args = str_dup_detached ( arg ) ; # else if ( ! section -> exec_args ) { section -> exec_args = str_alloc_detached ( 2 * sizeof ( char * ) ) ; section -> exec_args [ 0 ] = str_dup_detached ( section -> exec_name ) ; section -> exec_args [ 1 ] = NULL ; } # endif return NULL ; case CMD_INITIALIZE : if ( section -> exec_name ) ++ endpoints ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>file<S2SV_blank>execute<S2SV_blank>local<S2SV_blank>inetd-type<S2SV_blank>program\" , \"exec\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> exec_args = NULL ; break ; case CMD_SET_COPY : # ifdef USE_WIN32 section -> exec_args = str_dup_detached ( new_service_options . exec_args ) ; # else section -> exec_args = arg_dup ( new_service_options . exec_args ) ; # endif break ; case CMD_FREE : # ifdef USE_WIN32 str_free ( section -> exec_args ) ; # else arg_free ( section -> exec_args ) ; # endif break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"execArgs\" ) ) break ; # ifdef USE_WIN32 str_free ( section -> exec_args ) ; section -> exec_args = str_dup_detached ( arg ) ; # else arg_free ( section -> exec_args ) ; section -> exec_args = arg_alloc ( arg ) ; # endif return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>arguments<S2SV_blank>for<S2SV_blank>\\'exec\\'<S2SV_blank>(including<S2SV_blank>$0)\" , \"execArgs\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> failover = FAILOVER_PRIO ; section -> rr = 0 ; break ; case CMD_SET_COPY : section -> failover = new_service_options . failover ; section -> rr = new_service_options . rr ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"failover\" ) ) break ; if ( ! strcasecmp ( arg , \"rr\" ) ) section -> failover = FAILOVER_RR ; else if ( ! strcasecmp ( arg , \"prio\" ) ) section -> failover = FAILOVER_PRIO ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'rr\\'<S2SV_blank>or<S2SV_blank>\\'prio\\'\" ; return NULL ; case CMD_INITIALIZE : if ( section -> option . delayed_lookup ) section -> failover = FAILOVER_PRIO ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>rr|prio<S2SV_blank>failover<S2SV_blank>strategy\" , \"failover\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> username = NULL ; break ; case CMD_SET_COPY : section -> username = str_dup_detached ( new_service_options . username ) ; break ; case CMD_FREE : str_free ( section -> username ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"ident\" ) ) break ; str_free ( section -> username ) ; section -> username = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>username<S2SV_blank>for<S2SV_blank>IDENT<S2SV_blank>(RFC<S2SV_blank>1413)<S2SV_blank>checking\" , \"ident\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"include\" ) ) break ; return include_config ( arg , section_ptr ) ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>directory<S2SV_blank>with<S2SV_blank>configuration<S2SV_blank>file<S2SV_blank>snippets\" , \"include\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> key = NULL ; break ; case CMD_SET_COPY : section -> key = str_dup_detached ( new_service_options . key ) ; break ; case CMD_FREE : str_free ( section -> key ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"key\" ) ) break ; str_free ( section -> key ) ; section -> key = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : if ( section -> cert && ! section -> key ) section -> key = str_dup_detached ( section -> cert ) ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>certificate<S2SV_blank>private<S2SV_blank>key\" , \"key\" ) ; break ; } # ifdef USE_LIBWRAP switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . libwrap = 0 ; break ; case CMD_SET_COPY : section -> option . libwrap = new_service_options . option . libwrap ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"libwrap\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . libwrap = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . libwrap = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>use<S2SV_blank>/etc/hosts.allow<S2SV_blank>and<S2SV_blank>/etc/hosts.deny\" , \"libwrap\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . local = 0 ; break ; case CMD_SET_COPY : section -> option . local = new_service_options . option . local ; memcpy ( & section -> source_addr , & new_service_options . source_addr , sizeof ( SOCKADDR_UNION ) ) ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"local\" ) ) break ; if ( ! hostport2addr ( & section -> source_addr , arg , \"0\" , 1 ) ) return \"Failed<S2SV_blank>to<S2SV_blank>resolve<S2SV_blank>local<S2SV_blank>address\" ; section -> option . local = 1 ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>IP<S2SV_blank>address<S2SV_blank>to<S2SV_blank>be<S2SV_blank>used<S2SV_blank>as<S2SV_blank>source<S2SV_blank>for<S2SV_blank>remote\" \"<S2SV_blank>connections\" , \"local\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> log_id = LOG_ID_SEQUENTIAL ; break ; case CMD_SET_COPY : section -> log_id = new_service_options . log_id ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"logId\" ) ) break ; if ( ! strcasecmp ( arg , \"sequential\" ) ) section -> log_id = LOG_ID_SEQUENTIAL ; else if ( ! strcasecmp ( arg , \"unique\" ) ) section -> log_id = LOG_ID_UNIQUE ; else if ( ! strcasecmp ( arg , \"thread\" ) ) section -> log_id = LOG_ID_THREAD ; else if ( ! strcasecmp ( arg , \"process\" ) ) section -> log_id = LOG_ID_PROCESS ; else return \"Invalid<S2SV_blank>connection<S2SV_blank>identifier<S2SV_blank>type\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"logId\" , \"sequential\" ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>connection<S2SV_blank>identifier<S2SV_blank>type\" , \"logId\" ) ; break ; } # ifndef OPENSSL_NO_OCSP switch ( cmd ) { case CMD_SET_DEFAULTS : section -> ocsp_url = NULL ; break ; case CMD_SET_COPY : section -> ocsp_url = str_dup_detached ( new_service_options . ocsp_url ) ; break ; case CMD_FREE : str_free ( section -> ocsp_url ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"ocsp\" ) ) break ; str_free ( section -> ocsp_url ) ; section -> ocsp_url = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>OCSP<S2SV_blank>responder<S2SV_blank>URL\" , \"OCSP\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . aia = 0 ; break ; case CMD_SET_COPY : section -> option . aia = new_service_options . option . aia ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"OCSPaia\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . aia = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . aia = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>check<S2SV_blank>the<S2SV_blank>AIA<S2SV_blank>responders<S2SV_blank>from<S2SV_blank>certificates\" , \"OCSPaia\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> ocsp_flags = 0 ; break ; case CMD_SET_COPY : section -> ocsp_flags = new_service_options . ocsp_flags ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"OCSPflag\" ) ) break ; { unsigned long tmp_ulong = parse_ocsp_flag ( arg ) ; if ( ! tmp_ulong ) return \"Illegal<S2SV_blank>OCSP<S2SV_blank>flag\" ; section -> ocsp_flags |= tmp_ulong ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>OCSP<S2SV_blank>responder<S2SV_blank>flags\" , \"OCSPflag\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . nonce = 0 ; break ; case CMD_SET_COPY : section -> option . nonce = new_service_options . option . nonce ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"OCSPnonce\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . nonce = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . nonce = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>send<S2SV_blank>and<S2SV_blank>verify<S2SV_blank>the<S2SV_blank>OCSP<S2SV_blank>nonce<S2SV_blank>extension\" , \"OCSPnonce\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> ssl_options_set = 0 ; # if OPENSSL_VERSION_NUMBER >= 0x009080dfL section -> ssl_options_clear = 0 ; # endif break ; case CMD_SET_COPY : section -> ssl_options_set = new_service_options . ssl_options_set ; # if OPENSSL_VERSION_NUMBER >= 0x009080dfL section -> ssl_options_clear = new_service_options . ssl_options_clear ; # endif break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"options\" ) ) break ; # if OPENSSL_VERSION_NUMBER >= 0x009080dfL if ( * arg == '-' ) { long unsigned tmp = parse_ssl_option ( arg + 1 ) ; if ( tmp == INVALID_SSL_OPTION ) return \"Illegal<S2SV_blank>TLS<S2SV_blank>option\" ; section -> ssl_options_clear |= tmp ; return NULL ; } # endif { long unsigned tmp = parse_ssl_option ( arg ) ; if ( tmp == INVALID_SSL_OPTION ) return \"Illegal<S2SV_blank>TLS<S2SV_blank>option\" ; section -> ssl_options_set |= tmp ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"options\" , \"NO_SSLv2\" ) ; s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%s\" , \"options\" , \"NO_SSLv3\" ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>TLS<S2SV_blank>option<S2SV_blank>to<S2SV_blank>set/reset\" , \"options\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> protocol = NULL ; break ; case CMD_SET_COPY : section -> protocol = str_dup_detached ( new_service_options . protocol ) ; break ; case CMD_FREE : str_free ( section -> protocol ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"protocol\" ) ) break ; str_free ( section -> protocol ) ; section -> protocol = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : { char * tmp_str = protocol ( NULL , section , PROTOCOL_CHECK ) ; if ( tmp_str ) return tmp_str ; } endpoints += section -> option . protocol_endpoint ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>protocol<S2SV_blank>to<S2SV_blank>negotiate<S2SV_blank>before<S2SV_blank>TLS<S2SV_blank>initialization\" , \"protocol\" ) ; s_log ( LOG_NOTICE , \"%25scurrently<S2SV_blank>supported:<S2SV_blank>cifs,<S2SV_blank>connect,<S2SV_blank>imap,\" , \"\" ) ; s_log ( LOG_NOTICE , \"%25s<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>nntp,<S2SV_blank>pgsql,<S2SV_blank>pop3,<S2SV_blank>proxy,<S2SV_blank>smtp,<S2SV_blank>socks\" , \"\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> protocol_authentication = str_dup_detached ( \"basic\" ) ; break ; case CMD_SET_COPY : section -> protocol_authentication = str_dup_detached ( new_service_options . protocol_authentication ) ; break ; case CMD_FREE : str_free ( section -> protocol_authentication ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"protocolAuthentication\" ) ) break ; str_free ( section -> protocol_authentication ) ; section -> protocol_authentication = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>authentication<S2SV_blank>type<S2SV_blank>for<S2SV_blank>protocol<S2SV_blank>negotiations\" , \"protocolAuthentication\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> protocol_domain = NULL ; break ; case CMD_SET_COPY : section -> protocol_domain = str_dup_detached ( new_service_options . protocol_domain ) ; break ; case CMD_FREE : str_free ( section -> protocol_domain ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"protocolDomain\" ) ) break ; str_free ( section -> protocol_domain ) ; section -> protocol_domain = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>domain<S2SV_blank>for<S2SV_blank>protocol<S2SV_blank>negotiations\" , \"protocolDomain\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> protocol_host = NULL ; break ; case CMD_SET_COPY : section -> protocol_host = str_dup_detached ( new_service_options . protocol_host ) ; break ; case CMD_FREE : str_free ( section -> protocol_host ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"protocolHost\" ) ) break ; str_free ( section -> protocol_host ) ; section -> protocol_host = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>host:port<S2SV_blank>for<S2SV_blank>protocol<S2SV_blank>negotiations\" , \"protocolHost\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> protocol_password = NULL ; break ; case CMD_SET_COPY : section -> protocol_password = str_dup_detached ( new_service_options . protocol_password ) ; break ; case CMD_FREE : str_free ( section -> protocol_password ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"protocolPassword\" ) ) break ; str_free ( section -> protocol_password ) ; section -> protocol_password = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>password<S2SV_blank>for<S2SV_blank>protocol<S2SV_blank>negotiations\" , \"protocolPassword\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> protocol_username = NULL ; break ; case CMD_SET_COPY : section -> protocol_username = str_dup_detached ( new_service_options . protocol_username ) ; break ; case CMD_FREE : str_free ( section -> protocol_username ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"protocolUsername\" ) ) break ; str_free ( section -> protocol_username ) ; section -> protocol_username = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>username<S2SV_blank>for<S2SV_blank>protocol<S2SV_blank>negotiations\" , \"protocolUsername\" ) ; break ; } # ifndef OPENSSL_NO_PSK switch ( cmd ) { case CMD_SET_DEFAULTS : section -> psk_identity = NULL ; section -> psk_selected = NULL ; section -> psk_sorted . val = NULL ; section -> psk_sorted . num = 0 ; break ; case CMD_SET_COPY : section -> psk_identity = str_dup_detached ( new_service_options . psk_identity ) ; break ; case CMD_FREE : str_free ( section -> psk_identity ) ; str_free ( section -> psk_sorted . val ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"PSKidentity\" ) ) break ; str_free ( section -> psk_identity ) ; section -> psk_identity = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : if ( ! section -> psk_keys ) break ; psk_sort ( & section -> psk_sorted , section -> psk_keys ) ; if ( section -> option . client ) { if ( section -> psk_identity ) { section -> psk_selected = psk_find ( & section -> psk_sorted , section -> psk_identity ) ; if ( ! section -> psk_selected ) return \"No<S2SV_blank>key<S2SV_blank>found<S2SV_blank>for<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>PSK<S2SV_blank>identity\" ; } else { section -> psk_selected = section -> psk_keys ; } } else { if ( section -> psk_identity ) s_log ( LOG_NOTICE , \"PSK<S2SV_blank>identity<S2SV_blank>is<S2SV_blank>ignored<S2SV_blank>in<S2SV_blank>the<S2SV_blank>server<S2SV_blank>mode\" ) ; } break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>identity<S2SV_blank>for<S2SV_blank>PSK<S2SV_blank>authentication\" , \"PSKidentity\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> psk_keys = NULL ; break ; case CMD_SET_COPY : section -> psk_keys = psk_dup ( new_service_options . psk_keys ) ; break ; case CMD_FREE : psk_free ( section -> psk_keys ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"PSKsecrets\" ) ) break ; section -> psk_keys = psk_read ( arg ) ; if ( ! section -> psk_keys ) return \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>PSK<S2SV_blank>secrets\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>secrets<S2SV_blank>for<S2SV_blank>PSK<S2SV_blank>authentication\" , \"PSKsecrets\" ) ; break ; } # endif # ifndef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . pty = 0 ; break ; case CMD_SET_COPY : section -> option . pty = new_service_options . option . pty ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"pty\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . pty = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . pty = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>allocate<S2SV_blank>pseudo<S2SV_blank>terminal<S2SV_blank>for<S2SV_blank>\\'exec\\'<S2SV_blank>option\" , \"pty\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : addrlist_clear ( & section -> redirect_addr , 0 ) ; break ; case CMD_SET_COPY : addrlist_clear ( & section -> redirect_addr , 0 ) ; name_list_dup ( & section -> redirect_addr . names , new_service_options . redirect_addr . names ) ; break ; case CMD_FREE : name_list_free ( section -> redirect_addr . names ) ; str_free ( section -> redirect_addr . addr ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"redirect\" ) ) break ; name_list_append ( & section -> redirect_addr . names , arg ) ; return NULL ; case CMD_INITIALIZE : if ( section -> redirect_addr . names ) { if ( section -> option . client ) return \"\\\\\"redirect\\\\\"<S2SV_blank>is<S2SV_blank>unsupported<S2SV_blank>in<S2SV_blank>client<S2SV_blank>sections\" ; if ( section -> option . connect_before_ssl ) return \"\\\\\"redirect\\\\\"<S2SV_blank>is<S2SV_blank>incompatible<S2SV_blank>with<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>protocol<S2SV_blank>negotiation\" ; if ( ! section -> option . delayed_lookup && ! addrlist_resolve ( & section -> redirect_addr ) ) { s_log ( LOG_INFO , \"Cannot<S2SV_blank>resolve<S2SV_blank>redirect<S2SV_blank>target<S2SV_blank>-<S2SV_blank>delaying<S2SV_blank>DNS<S2SV_blank>lookup\" ) ; section -> connect_addr . num = 0 ; section -> redirect_addr . num = 0 ; section -> option . delayed_lookup = 1 ; } if ( ! section -> option . verify_chain && ! section -> option . verify_peer ) return \"Either<S2SV_blank>\\\\\"verifyChain\\\\\"<S2SV_blank>or<S2SV_blank>\\\\\"verifyPeer\\\\\"<S2SV_blank>has<S2SV_blank>to<S2SV_blank>be<S2SV_blank>enabled<S2SV_blank>for<S2SV_blank>\\\\\"redirect\\\\\"<S2SV_blank>to<S2SV_blank>work\" ; } break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>[host:]port<S2SV_blank>to<S2SV_blank>redirect<S2SV_blank>on<S2SV_blank>authentication<S2SV_blank>failures\" , \"redirect\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . renegotiation = 1 ; break ; case CMD_SET_COPY : section -> option . renegotiation = new_service_options . option . renegotiation ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"renegotiation\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . renegotiation = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . renegotiation = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>support<S2SV_blank>renegotiation\" , \"renegotiation\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . require_cert = 0 ; break ; case CMD_SET_COPY : section -> option . require_cert = new_service_options . option . require_cert ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"requireCert\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) { section -> option . request_cert = 1 ; section -> option . require_cert = 1 ; } else if ( ! strcasecmp ( arg , \"no\" ) ) { section -> option . require_cert = 0 ; } else { return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>require<S2SV_blank>client<S2SV_blank>certificate\" , \"requireCert\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . reset = 1 ; break ; case CMD_SET_COPY : section -> option . reset = new_service_options . option . reset ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"reset\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . reset = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . reset = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>send<S2SV_blank>TCP<S2SV_blank>RST<S2SV_blank>on<S2SV_blank>error\" , \"reset\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . retry = 0 ; break ; case CMD_SET_COPY : section -> option . retry = new_service_options . option . retry ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"retry\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) section -> option . retry = 1 ; else if ( ! strcasecmp ( arg , \"no\" ) ) section -> option . retry = 0 ; else return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>retry<S2SV_blank>connect+exec<S2SV_blank>section\" , \"retry\" ) ; break ; <S2SV_StartBug> } <S2SV_EndBug> # ifndef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : section -> servname = str_dup_detached ( \"stunnel\" ) ; break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"service\" ) ) break ; str_free ( section -> servname ) ; section -> servname = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>service<S2SV_blank>name\" , \"service\" ) ; break ; } # endif # ifndef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : section -> gid = 0 ; break ; case CMD_SET_COPY : section -> gid = new_service_options . gid ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"setgid\" ) ) break ; gr = getgrnam ( arg ) ; if ( gr ) { section -> gid = gr -> gr_gid ; return NULL ; } { char * tmp_str ; section -> gid = ( gid_t ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>GID\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>groupname<S2SV_blank>for<S2SV_blank>setgid()\" , \"setgid\" ) ; break ; } # endif # ifndef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : section -> uid = 0 ; break ; case CMD_SET_COPY : section -> uid = new_service_options . uid ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"setuid\" ) ) break ; pw = getpwnam ( arg ) ; if ( pw ) { section -> uid = pw -> pw_uid ; return NULL ; } { char * tmp_str ; section -> uid = ( uid_t ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>UID\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>username<S2SV_blank>for<S2SV_blank>setuid()\" , \"setuid\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> session_size = 1000L ; break ; case CMD_SET_COPY : section -> session_size = new_service_options . session_size ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"sessionCacheSize\" ) ) break ; { char * tmp_str ; section -> session_size = strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>session<S2SV_blank>cache<S2SV_blank>size\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%ld\" , \"sessionCacheSize\" , 1000L ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>session<S2SV_blank>cache<S2SV_blank>size\" , \"sessionCacheSize\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> session_timeout = 300L ; break ; case CMD_SET_COPY : section -> session_timeout = new_service_options . session_timeout ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"sessionCacheTimeout\" ) && strcasecmp ( opt , \"session\" ) ) break ; { char * tmp_str ; section -> session_timeout = strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>session<S2SV_blank>cache<S2SV_blank>timeout\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%ld<S2SV_blank>seconds\" , \"sessionCacheTimeout\" , 300L ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>session<S2SV_blank>cache<S2SV_blank>timeout<S2SV_blank>(in<S2SV_blank>seconds)\" , \"sessionCacheTimeout\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . sessiond = 0 ; memset ( & section -> sessiond_addr , 0 , sizeof ( SOCKADDR_UNION ) ) ; section -> sessiond_addr . in . sin_family = AF_INET ; break ; case CMD_SET_COPY : section -> option . sessiond = new_service_options . option . sessiond ; memcpy ( & section -> sessiond_addr , & new_service_options . sessiond_addr , sizeof ( SOCKADDR_UNION ) ) ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"sessiond\" ) ) break ; section -> option . sessiond = 1 ; # ifdef SSL_OP_NO_TICKET section -> ssl_options_set |= SSL_OP_NO_TICKET ; # endif if ( ! name2addr ( & section -> sessiond_addr , arg , 0 ) ) return \"Failed<S2SV_blank>to<S2SV_blank>resolve<S2SV_blank>sessiond<S2SV_blank>server<S2SV_blank>address\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>[host:]port<S2SV_blank>use<S2SV_blank>sessiond<S2SV_blank>at<S2SV_blank>host:port\" , \"sessiond\" ) ; break ; } # ifndef OPENSSL_NO_TLSEXT switch ( cmd ) { case CMD_SET_DEFAULTS : section -> servername_list_head = NULL ; section -> servername_list_tail = NULL ; break ; case CMD_SET_COPY : section -> sni = str_dup_detached ( new_service_options . sni ) ; break ; case CMD_FREE : str_free ( section -> sni ) ; sni_free ( section ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"sni\" ) ) break ; str_free ( section -> sni ) ; section -> sni = str_dup_detached ( arg ) ; return NULL ; case CMD_INITIALIZE : { char * tmp_str = sni_init ( section ) ; if ( tmp_str ) return tmp_str ; } if ( ! section -> option . client && section -> sni ) ++ endpoints ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>master_service:host_name<S2SV_blank>for<S2SV_blank>an<S2SV_blank>SNI<S2SV_blank>virtual<S2SV_blank>service\" , \"sni\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> sock_opts = socket_options_init ( ) ; break ; case CMD_SET_COPY : section -> sock_opts = socket_options_dup ( new_service_options . sock_opts ) ; break ; case CMD_FREE : socket_options_free ( section -> sock_opts ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"socket\" ) ) break ; if ( socket_option_parse ( section -> sock_opts , arg ) ) return \"Illegal<S2SV_blank>socket<S2SV_blank>option\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>a|l|r:option=value[:value]\" , \"socket\" ) ; s_log ( LOG_NOTICE , \"%25sset<S2SV_blank>an<S2SV_blank>option<S2SV_blank>on<S2SV_blank>accept/local/remote<S2SV_blank>socket\" , \"\" ) ; break ; } # if OPENSSL_VERSION_NUMBER >= 0x10100000L switch ( cmd ) { case CMD_SET_DEFAULTS : break ; case CMD_SET_COPY : break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"sslVersion\" ) ) break ; section -> max_proto_version = section -> min_proto_version = str_to_proto_version ( arg ) ; if ( section -> max_proto_version == - 1 ) return \"Invalid<S2SV_blank>protocol<S2SV_blank>version\" ; return NULL ; case CMD_INITIALIZE : if ( section -> max_proto_version && section -> min_proto_version && section -> max_proto_version < section -> min_proto_version ) return \"Invalid<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>range\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>all\" \"|SSLv3|TLSv1|TLSv1.1|TLSv1.2\" # ifdef TLS1_3_VERSION \"|TLSv1.3\" # endif \"<S2SV_blank>TLS<S2SV_blank>version\" , \"sslVersion\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> max_proto_version = 0 ; break ; case CMD_SET_COPY : section -> max_proto_version = new_service_options . max_proto_version ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"sslVersionMax\" ) ) break ; section -> max_proto_version = str_to_proto_version ( arg ) ; if ( section -> max_proto_version == - 1 ) return \"Invalid<S2SV_blank>protocol<S2SV_blank>version\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>all\" \"|SSLv3|TLSv1|TLSv1.1|TLSv1.2\" # ifdef TLS1_3_VERSION \"|TLSv1.3\" # endif \"<S2SV_blank>TLS<S2SV_blank>version\" , \"sslVersionMax\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> min_proto_version = TLS1_VERSION ; break ; case CMD_SET_COPY : section -> min_proto_version = new_service_options . min_proto_version ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"sslVersionMin\" ) ) break ; section -> min_proto_version = str_to_proto_version ( arg ) ; if ( section -> min_proto_version == - 1 ) return \"Invalid<S2SV_blank>protocol<S2SV_blank>version\" ; return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>all\" \"|SSLv3|TLSv1|TLSv1.1|TLSv1.2\" # ifdef TLS1_3_VERSION \"|TLSv1.3\" # endif \"<S2SV_blank>TLS<S2SV_blank>version\" , \"sslVersionMin\" ) ; break ; } # else switch ( cmd ) { case CMD_SET_DEFAULTS : tls_methods_set ( section , NULL ) ; break ; case CMD_SET_COPY : section -> client_method = new_service_options . client_method ; section -> server_method = new_service_options . server_method ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"sslVersion\" ) ) break ; return tls_methods_set ( section , arg ) ; case CMD_INITIALIZE : { char * tmp_str = tls_methods_check ( section ) ; if ( tmp_str ) return tmp_str ; } break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>all\" \"|SSLv2|SSLv3|TLSv1\" # if OPENSSL_VERSION_NUMBER >= 0x10001000L \"|TLSv1.1|TLSv1.2\" # endif \"<S2SV_blank>TLS<S2SV_blank>method\" , \"sslVersion\" ) ; break ; } # endif # ifndef USE_FORK switch ( cmd ) { case CMD_SET_DEFAULTS : section -> stack_size = DEFAULT_STACK_SIZE ; break ; case CMD_SET_COPY : section -> stack_size = new_service_options . stack_size ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"stack\" ) ) break ; { char * tmp_str ; section -> stack_size = ( size_t ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>thread<S2SV_blank>stack<S2SV_blank>size\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>bytes\" , \"stack\" , DEFAULT_STACK_SIZE ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>thread<S2SV_blank>stack<S2SV_blank>size<S2SV_blank>(in<S2SV_blank>bytes)\" , \"stack\" ) ; break ; } # endif # if OPENSSL_VERSION_NUMBER >= 0x10000000L switch ( cmd ) { case CMD_SET_DEFAULTS : section -> ticket_key = NULL ; break ; case CMD_SET_COPY : section -> ticket_key = key_dup ( new_service_options . ticket_key ) ; break ; case CMD_FREE : key_free ( section -> ticket_key ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"ticketKeySecret\" ) ) break ; section -> ticket_key = key_read ( arg , \"ticketKeySecret\" ) ; if ( ! section -> ticket_key ) return \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>ticketKeySecret\" ; return NULL ; case CMD_INITIALIZE : if ( ! section -> ticket_key ) break ; if ( section -> option . client ) { s_log ( LOG_NOTICE , \"ticketKeySecret<S2SV_blank>is<S2SV_blank>ignored<S2SV_blank>in<S2SV_blank>the<S2SV_blank>client<S2SV_blank>mode\" ) ; break ; } if ( section -> ticket_key && ! section -> ticket_mac ) return \"\\\\\"ticketKeySecret\\\\\"<S2SV_blank>and<S2SV_blank>\\\\\"ticketMacSecret\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>set<S2SV_blank>together\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>secret<S2SV_blank>key<S2SV_blank>for<S2SV_blank>encryption/decryption<S2SV_blank>TLSv1.3<S2SV_blank>tickets\" , \"ticketKeySecret\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> ticket_mac = NULL ; break ; case CMD_SET_COPY : section -> ticket_mac = key_dup ( new_service_options . ticket_mac ) ; break ; case CMD_FREE : key_free ( section -> ticket_mac ) ; break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"ticketMacSecret\" ) ) break ; section -> ticket_mac = key_read ( arg , \"ticketMacSecret\" ) ; if ( ! section -> ticket_mac ) return \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>ticketMacSecret\" ; return NULL ; case CMD_INITIALIZE : if ( ! section -> ticket_mac ) break ; if ( section -> option . client ) { s_log ( LOG_NOTICE , \"ticketMacSecret<S2SV_blank>is<S2SV_blank>ignored<S2SV_blank>in<S2SV_blank>the<S2SV_blank>client<S2SV_blank>mode\" ) ; break ; } if ( section -> ticket_mac && ! section -> ticket_key ) return \"\\\\\"ticketKeySecret\\\\\"<S2SV_blank>and<S2SV_blank>\\\\\"ticketMacSecret\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>set<S2SV_blank>together\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>key<S2SV_blank>for<S2SV_blank>HMAC<S2SV_blank>operations<S2SV_blank>on<S2SV_blank>TLSv1.3<S2SV_blank>tickets\" , \"ticketMacSecret\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> timeout_busy = 300 ; break ; case CMD_SET_COPY : section -> timeout_busy = new_service_options . timeout_busy ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"TIMEOUTbusy\" ) ) break ; { char * tmp_str ; section -> timeout_busy = ( int ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>busy<S2SV_blank>timeout\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>seconds\" , \"TIMEOUTbusy\" , 300 ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>seconds<S2SV_blank>to<S2SV_blank>wait<S2SV_blank>for<S2SV_blank>expected<S2SV_blank>data\" , \"TIMEOUTbusy\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> timeout_close = 60 ; break ; case CMD_SET_COPY : section -> timeout_close = new_service_options . timeout_close ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"TIMEOUTclose\" ) ) break ; { char * tmp_str ; section -> timeout_close = ( int ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>close<S2SV_blank>timeout\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>seconds\" , \"TIMEOUTclose\" , 60 ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>seconds<S2SV_blank>to<S2SV_blank>wait<S2SV_blank>for<S2SV_blank>close_notify\" , \"TIMEOUTclose\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> timeout_connect = 10 ; break ; case CMD_SET_COPY : section -> timeout_connect = new_service_options . timeout_connect ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"TIMEOUTconnect\" ) ) break ; { char * tmp_str ; section -> timeout_connect = ( int ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>connect<S2SV_blank>timeout\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>seconds\" , \"TIMEOUTconnect\" , 10 ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>seconds<S2SV_blank>to<S2SV_blank>connect<S2SV_blank>remote<S2SV_blank>host\" , \"TIMEOUTconnect\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> timeout_idle = 43200 ; break ; case CMD_SET_COPY : section -> timeout_idle = new_service_options . timeout_idle ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"TIMEOUTidle\" ) ) break ; { char * tmp_str ; section -> timeout_idle = ( int ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str ) return \"Illegal<S2SV_blank>idle<S2SV_blank>timeout\" ; return NULL ; } case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>seconds\" , \"TIMEOUTidle\" , 43200 ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>seconds<S2SV_blank>to<S2SV_blank>keep<S2SV_blank>an<S2SV_blank>idle<S2SV_blank>connection\" , \"TIMEOUTidle\" ) ; break ; } # ifndef USE_WIN32 switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . transparent_src = 0 ; section -> option . transparent_dst = 0 ; break ; case CMD_SET_COPY : section -> option . transparent_src = new_service_options . option . transparent_src ; section -> option . transparent_dst = new_service_options . option . transparent_dst ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"transparent\" ) ) break ; if ( ! strcasecmp ( arg , \"none\" ) || ! strcasecmp ( arg , \"no\" ) ) { section -> option . transparent_src = 0 ; section -> option . transparent_dst = 0 ; } else if ( ! strcasecmp ( arg , \"source\" ) || ! strcasecmp ( arg , \"yes\" ) ) { section -> option . transparent_src = 1 ; section -> option . transparent_dst = 0 ; } else if ( ! strcasecmp ( arg , \"destination\" ) ) { section -> option . transparent_src = 0 ; section -> option . transparent_dst = 1 ; } else if ( ! strcasecmp ( arg , \"both\" ) ) { section -> option . transparent_src = 1 ; section -> option . transparent_dst = 1 ; } else return \"Selected<S2SV_blank>transparent<S2SV_blank>proxy<S2SV_blank>mode<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available\" ; return NULL ; case CMD_INITIALIZE : if ( section -> option . transparent_dst ) ++ endpoints ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>none|source|destination|both<S2SV_blank>transparent<S2SV_blank>proxy<S2SV_blank>mode\" , \"transparent\" ) ; break ; } # endif switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . request_cert = 0 ; break ; case CMD_SET_COPY : section -> option . request_cert = new_service_options . option . request_cert ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"verify\" ) ) break ; { char * tmp_str ; int tmp_int = ( int ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str || tmp_int < 0 || tmp_int > 4 ) return \"Bad<S2SV_blank>verify<S2SV_blank>level\" ; section -> option . request_cert = 1 ; section -> option . require_cert = ( tmp_int >= 2 ) ; section -> option . verify_chain = ( tmp_int >= 1 && tmp_int <= 3 ) ; section -> option . verify_peer = ( tmp_int >= 3 ) ; } return NULL ; case CMD_INITIALIZE : if ( ( section -> option . verify_chain || section -> option . verify_peer ) && ! section -> ca_file && ! section -> ca_dir ) return \"Either<S2SV_blank>\\\\\"CAfile\\\\\"<S2SV_blank>or<S2SV_blank>\\\\\"CApath\\\\\"<S2SV_blank>has<S2SV_blank>to<S2SV_blank>be<S2SV_blank>configured\" ; break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>none\" , \"verify\" ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>level<S2SV_blank>of<S2SV_blank>peer<S2SV_blank>certificate<S2SV_blank>verification\" , \"verify\" ) ; <S2SV_StartBug> s_log ( LOG_NOTICE , <S2SV_EndBug> \"%25slevel<S2SV_blank>0<S2SV_blank>-<S2SV_blank>request<S2SV_blank>and<S2SV_blank>ignore<S2SV_blank>peer<S2SV_blank>cert\" , \"\" ) ; s_log ( LOG_NOTICE , \"%25slevel<S2SV_blank>1<S2SV_blank>-<S2SV_blank>only<S2SV_blank>validate<S2SV_blank>peer<S2SV_blank>cert<S2SV_blank>if<S2SV_blank>present\" , \"\" ) ; s_log ( LOG_NOTICE , \"%25slevel<S2SV_blank>2<S2SV_blank>-<S2SV_blank>always<S2SV_blank>require<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>peer<S2SV_blank>cert\" , \"\" ) ; s_log ( LOG_NOTICE , \"%25slevel<S2SV_blank>3<S2SV_blank>-<S2SV_blank>verify<S2SV_blank>peer<S2SV_blank>with<S2SV_blank>locally<S2SV_blank>installed<S2SV_blank>cert\" , \"\" ) ; s_log ( LOG_NOTICE , \"%25slevel<S2SV_blank>4<S2SV_blank>-<S2SV_blank>ignore<S2SV_blank>CA<S2SV_blank>chain<S2SV_blank>and<S2SV_blank>only<S2SV_blank>verify<S2SV_blank>peer<S2SV_blank>cert\" , \"\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . verify_chain = 0 ; break ; case CMD_SET_COPY : section -> option . verify_chain = new_service_options . option . verify_chain ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"verifyChain\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) { section -> option . request_cert = 1 ; section -> option . require_cert = 1 ; section -> option . verify_chain = 1 ; } else if ( ! strcasecmp ( arg , \"no\" ) ) { section -> option . verify_chain = 0 ; } else { return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>verify<S2SV_blank>certificate<S2SV_blank>chain\" , \"verifyChain\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : section -> option . verify_peer = 0 ; break ; case CMD_SET_COPY : section -> option . verify_peer = new_service_options . option . verify_peer ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"verifyPeer\" ) ) break ; if ( ! strcasecmp ( arg , \"yes\" ) ) { section -> option . request_cert = 1 ; section -> option . require_cert = 1 ; section -> option . verify_peer = 1 ; } else if ( ! strcasecmp ( arg , \"no\" ) ) { section -> option . verify_peer = 0 ; } else { return \"The<S2SV_blank>argument<S2SV_blank>needs<S2SV_blank>to<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'yes\\'<S2SV_blank>or<S2SV_blank>\\'no\\'\" ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>yes|no<S2SV_blank>verify<S2SV_blank>peer<S2SV_blank>certificate\" , \"verifyPeer\" ) ; break ; } switch ( cmd ) { case CMD_SET_DEFAULTS : break ; case CMD_SET_COPY : break ; case CMD_FREE : str_free ( section -> chain ) ; if ( section -> session ) SSL_SESSION_free ( section -> session ) ; if ( section -> ctx ) SSL_CTX_free ( section -> ctx ) ; str_free ( section -> servname ) ; <S2SV_StartBug> if ( section == & service_options ) <S2SV_EndBug> memset ( section , 0 , sizeof ( SERVICE_OPTIONS ) ) ; else str_free ( section ) ; break ; case CMD_SET_VALUE : return option_not_found ; case CMD_INITIALIZE : if ( section != & new_service_options ) { if ( endpoints != 2 ) return \"Each<S2SV_blank>service<S2SV_blank>must<S2SV_blank>define<S2SV_blank>two<S2SV_blank>endpoints\" ; } else { if ( section -> option . accept ) return \"\\'accept\\'<S2SV_blank>option<S2SV_blank>is<S2SV_blank>only<S2SV_blank>allowed<S2SV_blank>in<S2SV_blank>a<S2SV_blank>[section]\" ; if ( endpoints != 1 ) return \"Inetd<S2SV_blank>mode<S2SV_blank>must<S2SV_blank>define<S2SV_blank>one<S2SV_blank>endpoint\" ; } # ifdef SSL_OP_NO_TICKET if ( OpenSSL_version_num ( ) < 0x10101000L && ! section -> option . client && ! section -> option . connect_before_ssl ) section -> ssl_options_set |= SSL_OP_NO_TICKET ; # endif if ( context_init ( section ) ) return \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>TLS<S2SV_blank>context\" ; break ; case CMD_PRINT_DEFAULTS : break ; case CMD_PRINT_HELP : break ; } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 1 ; if ( section == & service_options ) s_log ( LOG_ERR , \"INTERNAL<S2SV_blank>ERROR:<S2SV_blank>Initializing<S2SV_blank>deployed<S2SV_blank>section<S2SV_blank>defaults\" ) ; else if ( section == & new_service_options ) s_log ( LOG_INFO , \"Initializing<S2SV_blank>inetd<S2SV_blank>mode<S2SV_blank>configuration\" ) ; else s_log ( LOG_INFO , \"Initializing<S2SV_blank>service<S2SV_blank>[%s]\" , section -> servname ) ; <S2SV_ModStart> == & service_options ) s_log ( LOG_DEBUG , \"Deallocating<S2SV_blank>deployed<S2SV_blank>section<S2SV_blank>defaults\" ) ; else if ( <S2SV_ModEnd> section == & <S2SV_ModStart> ( LOG_DEBUG , \"Deallocating<S2SV_blank>temporary<S2SV_blank>section<S2SV_blank>defaults\" <S2SV_ModEnd> ) ; else <S2SV_ModStart> break ; } # if OPENSSL_VERSION_NUMBER >= 0x10100000L switch ( cmd ) { case CMD_SET_DEFAULTS : section -> security_level = - 1 ; break ; case CMD_SET_COPY : section -> security_level = new_service_options . security_level ; break ; case CMD_FREE : break ; case CMD_SET_VALUE : if ( strcasecmp ( opt , \"securityLevel\" ) ) break ; { char * tmp_str ; int tmp_int = ( int ) strtol ( arg , & tmp_str , 10 ) ; if ( tmp_str == arg || * tmp_str || tmp_int < 0 || tmp_int > 5 ) return \"Illegal<S2SV_blank>security<S2SV_blank>level\" ; section -> security_level = tmp_int ; } return NULL ; case CMD_INITIALIZE : break ; case CMD_PRINT_DEFAULTS : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>%d\" , \"securityLevel\" , DEFAULT_SECURITY_LEVEL ) ; break ; case CMD_PRINT_HELP : s_log ( LOG_NOTICE , \"%-22s<S2SV_blank>=<S2SV_blank>set<S2SV_blank>the<S2SV_blank>security<S2SV_blank>level\" , \"securityLevel\" ) ; break ; } # endif <S2SV_ModStart> \"verify\" ) ; <S2SV_ModEnd> break ; } <S2SV_ModStart> == & service_options || section == & new_service_options\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1858\n\n```\nCWE-264 static int userns_install ( struct nsproxy * nsproxy , void * ns ) { struct user_namespace * user_ns = ns ; struct cred * cred ; if ( user_ns == current_user_ns ( ) ) return - EINVAL ; <S2SV_StartBug> if ( atomic_read ( & current -> mm -> mm_users ) > 1 ) <S2SV_EndBug> return - EINVAL ; if ( ! ns_capable ( user_ns , CAP_SYS_ADMIN ) ) return - EPERM ; cred = prepare_creds ( ) ; if ( ! cred ) return - ENOMEM ; put_user_ns ( cred -> user_ns ) ; set_cred_user_ns ( cred , get_user_ns ( user_ns ) ) ; return commit_creds ( cred ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mm_users ) > 1 ) return - EINVAL ; if ( current -> fs -> users !=\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18885\n\n```\nCWE-476 int btrfs_scrub_dev ( struct btrfs_fs_info * fs_info , u64 devid , u64 start , u64 end , struct btrfs_scrub_progress * progress , int readonly , int is_dev_replace ) { struct scrub_ctx * sctx ; int ret ; struct btrfs_device * dev ; unsigned int nofs_flag ; if ( btrfs_fs_closing ( fs_info ) ) return - EINVAL ; if ( fs_info -> nodesize > BTRFS_STRIPE_LEN ) { btrfs_err ( fs_info , \"scrub:<S2SV_blank>size<S2SV_blank>assumption<S2SV_blank>nodesize<S2SV_blank><=<S2SV_blank>BTRFS_STRIPE_LEN<S2SV_blank>(%d<S2SV_blank><=<S2SV_blank>%d)<S2SV_blank>fails\" , fs_info -> nodesize , BTRFS_STRIPE_LEN ) ; return - EINVAL ; } if ( fs_info -> sectorsize != PAGE_SIZE ) { btrfs_err_rl ( fs_info , \"scrub:<S2SV_blank>size<S2SV_blank>assumption<S2SV_blank>sectorsize<S2SV_blank>!=<S2SV_blank>PAGE_SIZE<S2SV_blank>(%d<S2SV_blank>!=<S2SV_blank>%lu)<S2SV_blank>fails\" , fs_info -> sectorsize , PAGE_SIZE ) ; return - EINVAL ; } if ( fs_info -> nodesize > PAGE_SIZE * SCRUB_MAX_PAGES_PER_BLOCK || fs_info -> sectorsize > PAGE_SIZE * SCRUB_MAX_PAGES_PER_BLOCK ) { btrfs_err ( fs_info , \"scrub:<S2SV_blank>size<S2SV_blank>assumption<S2SV_blank>nodesize<S2SV_blank>and<S2SV_blank>sectorsize<S2SV_blank><=<S2SV_blank>SCRUB_MAX_PAGES_PER_BLOCK<S2SV_blank>(%d<S2SV_blank><=<S2SV_blank>%d<S2SV_blank>&&<S2SV_blank>%d<S2SV_blank><=<S2SV_blank>%d)<S2SV_blank>fails\" , fs_info -> nodesize , SCRUB_MAX_PAGES_PER_BLOCK , fs_info -> sectorsize , SCRUB_MAX_PAGES_PER_BLOCK ) ; return - EINVAL ; } sctx = scrub_setup_ctx ( fs_info , is_dev_replace ) ; if ( IS_ERR ( sctx ) ) return PTR_ERR ( sctx ) ; mutex_lock ( & fs_info -> fs_devices -> device_list_mutex ) ; <S2SV_StartBug> dev = btrfs_find_device ( fs_info -> fs_devices , devid , NULL , NULL ) ; <S2SV_EndBug> if ( ! dev || ( test_bit ( BTRFS_DEV_STATE_MISSING , & dev -> dev_state ) && ! is_dev_replace ) ) { mutex_unlock ( & fs_info -> fs_devices -> device_list_mutex ) ; ret = - ENODEV ; goto out_free_ctx ; } if ( ! is_dev_replace && ! readonly && ! test_bit ( BTRFS_DEV_STATE_WRITEABLE , & dev -> dev_state ) ) { mutex_unlock ( & fs_info -> fs_devices -> device_list_mutex ) ; btrfs_err_in_rcu ( fs_info , \"scrub:<S2SV_blank>device<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>writable\" , rcu_str_deref ( dev -> name ) ) ; ret = - EROFS ; goto out_free_ctx ; } mutex_lock ( & fs_info -> scrub_lock ) ; if ( ! test_bit ( BTRFS_DEV_STATE_IN_FS_METADATA , & dev -> dev_state ) || test_bit ( BTRFS_DEV_STATE_REPLACE_TGT , & dev -> dev_state ) ) { mutex_unlock ( & fs_info -> scrub_lock ) ; mutex_unlock ( & fs_info -> fs_devices -> device_list_mutex ) ; ret = - EIO ; goto out_free_ctx ; } down_read ( & fs_info -> dev_replace . rwsem ) ; if ( dev -> scrub_ctx || ( ! is_dev_replace && btrfs_dev_replace_is_ongoing ( & fs_info -> dev_replace ) ) ) { up_read ( & fs_info -> dev_replace . rwsem ) ; mutex_unlock ( & fs_info -> scrub_lock ) ; mutex_unlock ( & fs_info -> fs_devices -> device_list_mutex ) ; ret = - EINPROGRESS ; goto out_free_ctx ; } up_read ( & fs_info -> dev_replace . rwsem ) ; ret = scrub_workers_get ( fs_info , is_dev_replace ) ; if ( ret ) { mutex_unlock ( & fs_info -> scrub_lock ) ; mutex_unlock ( & fs_info -> fs_devices -> device_list_mutex ) ; goto out_free_ctx ; } sctx -> readonly = readonly ; dev -> scrub_ctx = sctx ; mutex_unlock ( & fs_info -> fs_devices -> device_list_mutex ) ; __scrub_blocked_if_needed ( fs_info ) ; atomic_inc ( & fs_info -> scrubs_running ) ; mutex_unlock ( & fs_info -> scrub_lock ) ; nofs_flag = memalloc_nofs_save ( ) ; if ( ! is_dev_replace ) { mutex_lock ( & fs_info -> fs_devices -> device_list_mutex ) ; ret = scrub_supers ( sctx , dev ) ; mutex_unlock ( & fs_info -> fs_devices -> device_list_mutex ) ; } if ( ! ret ) ret = scrub_enumerate_chunks ( sctx , dev , start , end ) ; memalloc_nofs_restore ( nofs_flag ) ; wait_event ( sctx -> list_wait , atomic_read ( & sctx -> bios_in_flight ) == 0 ) ; atomic_dec ( & fs_info -> scrubs_running ) ; wake_up ( & fs_info -> scrub_pause_wait ) ; wait_event ( sctx -> list_wait , atomic_read ( & sctx -> workers_pending ) == 0 ) ; if ( progress ) memcpy ( progress , & sctx -> stat , sizeof ( * progress ) ) ; mutex_lock ( & fs_info -> scrub_lock ) ; dev -> scrub_ctx = NULL ; scrub_workers_put ( fs_info ) ; mutex_unlock ( & fs_info -> scrub_lock ) ; scrub_put_ctx ( sctx ) ; return ret ; out_free_ctx : scrub_free_ctx ( sctx ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL , NULL , true\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20763\n\n```\nCWE-787 char * gf_text_get_utf8_line ( char * szLine , u32 lineSize , FILE * txt_in , s32 unicode_type ) { u32 i , j , len ; char * sOK ; char szLineConv [ 1024 ] ; unsigned short * sptr ; memset ( szLine , 0 , sizeof ( char ) * lineSize ) ; sOK = fgets ( szLine , lineSize , txt_in ) ; if ( ! sOK ) return NULL ; if ( unicode_type <= 1 ) { j = 0 ; len = ( u32 ) strlen ( szLine ) ; <S2SV_StartBug> for ( i = 0 ; i < len ; i ++ ) { <S2SV_EndBug> if ( ! unicode_type && ( szLine [ i ] & 0x80 ) ) { if ( ( szLine [ i + 1 ] & 0xc0 ) != 0x80 ) { <S2SV_StartBug> szLineConv [ j ] = 0xc0 | ( ( szLine [ i ] >> 6 ) & 0x3 ) ; <S2SV_EndBug> j ++ ; szLine [ i ] &= 0xbf ; } <S2SV_StartBug> else if ( ( szLine [ i ] & 0xe0 ) == 0xc0 ) { <S2SV_EndBug> <S2SV_StartBug> szLineConv [ j ] = szLine [ i ] ; <S2SV_EndBug> i ++ ; j ++ ; } else if ( ( szLine [ i ] & 0xf0 ) == 0xe0 ) { <S2SV_StartBug> szLineConv [ j ] = szLine [ i ] ; <S2SV_EndBug> i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else if ( ( szLine [ i ] & 0xf8 ) == 0xf0 ) { <S2SV_StartBug> szLineConv [ j ] = szLine [ i ] ; <S2SV_EndBug> i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { i += 1 ; continue ; } } <S2SV_StartBug> szLineConv [ j ] = szLine [ i ] ; <S2SV_EndBug> j ++ ; } szLineConv [ j ] = 0 ; strcpy ( szLine , szLineConv ) ; return sOK ; } # ifdef GPAC_BIG_ENDIAN if ( unicode_type == 3 ) { # else if ( unicode_type == 2 ) { # endif i = 0 ; while ( 1 ) { char c ; if ( ! szLine [ i ] && ! szLine [ i + 1 ] ) break ; c = szLine [ i + 1 ] ; szLine [ i + 1 ] = szLine [ i ] ; szLine [ i ] = c ; i += 2 ; } } sptr = ( u16 * ) szLine ; i = ( u32 ) gf_utf8_wcstombs ( szLineConv , 1024 , ( const unsigned short * * ) & sptr ) ; if ( i >= ( u32 ) ARRAY_LENGTH ( szLineConv ) ) return NULL ; szLineConv [ i ] = 0 ; strcpy ( szLine , szLineConv ) ; if ( unicode_type == 3 ) fgetc ( txt_in ) ; return sOK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i < len && j < sizeof ( szLineConv ) - 1 ; i ++ , j <S2SV_ModEnd> ++ ) { <S2SV_ModStart> 0x80 ) { if ( j + 1 < sizeof ( szLineConv ) - 1 ) { <S2SV_ModStart> ; } else break ; } else <S2SV_ModStart> 0xc0 ) { if ( j + 1 < sizeof ( szLineConv ) - 1 && i + 1 < len ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { break ; } <S2SV_ModEnd> } else if <S2SV_ModStart> 0xe0 ) { if ( j + 2 < sizeof ( szLineConv ) - 1 && i + 2 < len ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { break ; } <S2SV_ModEnd> } else if <S2SV_ModStart> 0xf0 ) { if ( j + 3 < sizeof ( szLineConv ) - 1 && i + 3 < len ) { szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; szLineConv [ j ] = szLine [ i ] ; i ++ ; j ++ ; } else { break ; } <S2SV_ModEnd> } else { <S2SV_ModStart> ; } } if ( j < sizeof ( szLineConv ) - 1 && i < len ) szLineConv [ j ] = szLine [ i ] ; } if ( j >= sizeof ( szLineConv ) ) szLineConv [ sizeof ( szLineConv ) - 1 ] = 0 ; else <S2SV_ModEnd> szLineConv [ j\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7184\n\n```\nCWE-000 static inline int xfrm_replay_verify_len ( struct xfrm_replay_state_esn * replay_esn , struct nlattr * rp ) { struct xfrm_replay_state_esn * up ; int ulen ; if ( ! replay_esn || ! rp ) return 0 ; up = nla_data ( rp ) ; ulen = xfrm_replay_state_esn_len ( up ) ; <S2SV_StartBug> if ( nla_len ( rp ) < ulen || xfrm_replay_state_esn_len ( replay_esn ) != ulen ) <S2SV_EndBug> return - EINVAL ; if ( up -> replay_window > up -> bmp_len * sizeof ( __u32 ) * 8 ) return - EINVAL ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) != ulen || replay_esn -> bmp_len != up -> bmp_len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 int DecodeTime ( char * str , int * tmask , struct tm * tm , fsec_t * fsec ) { char * cp ; * tmask = DTK_TIME_M ; tm -> tm_hour = strtol ( str , & cp , 10 ) ; if ( * cp != ':' ) return - 1 ; str = cp + 1 ; tm -> tm_min = strtol ( str , & cp , 10 ) ; if ( * cp == '\\\\0' ) { tm -> tm_sec = 0 ; * fsec = 0 ; } else if ( * cp != ':' ) return - 1 ; else { str = cp + 1 ; tm -> tm_sec = strtol ( str , & cp , 10 ) ; if ( * cp == '\\\\0' ) * fsec = 0 ; else if ( * cp == '.' ) { # ifdef HAVE_INT64_TIMESTAMP <S2SV_StartBug> char fstr [ MAXDATELEN + 1 ] ; <S2SV_EndBug> strncpy ( fstr , ( cp + 1 ) , 7 ) ; strcpy ( fstr + strlen ( fstr ) , \"000000\" ) ; * ( fstr + 6 ) = '\\\\0' ; * fsec = strtol ( fstr , & cp , 10 ) ; # else str = cp ; * fsec = strtod ( str , & cp ) ; # endif if ( * cp != '\\\\0' ) return - 1 ; } else return - 1 ; } # ifdef HAVE_INT64_TIMESTAMP if ( tm -> tm_hour < 0 || tm -> tm_min < 0 || tm -> tm_min > 59 || tm -> tm_sec < 0 || tm -> tm_sec > 59 || * fsec >= USECS_PER_SEC ) return - 1 ; # else if ( tm -> tm_hour < 0 || tm -> tm_min < 0 || tm -> tm_min > 59 || tm -> tm_sec < 0 || tm -> tm_sec > 59 || * fsec >= 1 ) return - 1 ; # endif return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char fstr [ 7 ] ; int i ; cp ++ ; for ( i = 0 ; i < 6 ; i ++ ) fstr [ i ] = * cp != '\\\\0' ? * cp ++ : '0' ; fstr [ i ] <S2SV_ModEnd> = '\\\\0' ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3673\n\n```\nCWE-399 <S2SV_StartBug> int sctp_verify_asconf ( const struct sctp_association * asoc , <S2SV_EndBug> <S2SV_StartBug> struct sctp_paramhdr * param_hdr , void * chunk_end , <S2SV_EndBug> struct sctp_paramhdr * * errp ) { <S2SV_StartBug> sctp_addip_param_t * asconf_param ; <S2SV_EndBug> union sctp_params param ; <S2SV_StartBug> int length , plen ; <S2SV_EndBug> <S2SV_StartBug> param . v = ( sctp_paramhdr_t * ) param_hdr ; <S2SV_EndBug> while ( param . v <= chunk_end - sizeof ( sctp_paramhdr_t ) ) { length = ntohs ( param . p -> length ) ; * errp = param . p ; if ( param . v > chunk_end - length || length < sizeof ( sctp_paramhdr_t ) ) return 0 ; switch ( param . p -> type ) { case SCTP_PARAM_ADD_IP : case SCTP_PARAM_DEL_IP : case SCTP_PARAM_SET_PRIMARY : asconf_param = ( sctp_addip_param_t * ) param . v ; plen = ntohs ( asconf_param -> param_hdr . length ) ; if ( plen < sizeof ( sctp_addip_param_t ) + sizeof ( sctp_paramhdr_t ) ) return 0 ; break ; case SCTP_PARAM_SUCCESS_REPORT : case SCTP_PARAM_ADAPTATION_LAYER_IND : if ( length != sizeof ( sctp_addip_param_t ) ) return 0 ; break ; default : break ; } param . v += WORD_ROUND ( length ) ; } if ( param . v != chunk_end ) return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> bool <S2SV_ModEnd> sctp_verify_asconf ( const <S2SV_ModStart> asoc , struct sctp_chunk * chunk , bool addr_param_needed <S2SV_ModEnd> , struct sctp_paramhdr <S2SV_ModStart> errp ) { sctp_addip_chunk_t * addip = ( sctp_addip_chunk_t * ) chunk -> chunk_hdr <S2SV_ModEnd> ; union sctp_params <S2SV_ModStart> sctp_params param ; bool addr_param_seen = false ; sctp_walk_params ( param , addip , addip_hdr . params ) { size_t length = ntohs ( param . p -> length ) ; * errp = param . p ; switch ( param . p -> type ) { case SCTP_PARAM_ERR_CAUSE : break ; case SCTP_PARAM_IPV4_ADDRESS : if ( length != sizeof ( sctp_ipv4addr_param_t ) ) return false ; addr_param_seen = true ; break ; case SCTP_PARAM_IPV6_ADDRESS : if ( length != sizeof ( sctp_ipv6addr_param_t ) ) return false ; addr_param_seen = true ; break ; case SCTP_PARAM_ADD_IP : case SCTP_PARAM_DEL_IP : case SCTP_PARAM_SET_PRIMARY : if ( addr_param_needed && ! addr_param_seen ) return false ; length = ntohs ( param . addip -> param_hdr . length ) ; if ( length < sizeof ( sctp_addip_param_t ) + sizeof ( sctp_paramhdr_t ) ) return false ; break ; case SCTP_PARAM_SUCCESS_REPORT : case SCTP_PARAM_ADAPTATION_LAYER_IND : if ( length != sizeof ( sctp_addip_param_t ) ) return false ; break ; default : return false ; } } if ( addr_param_needed && ! addr_param_seen ) return false ; if ( ! addr_param_needed && addr_param_seen ) return false ; if ( <S2SV_ModEnd> param . v <S2SV_ModStart> param . v != chunk -> chunk_end ) return false ; return true <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12714\n\n```\nCWE-787 static void __local_bh_enable ( unsigned int cnt ) { <S2SV_StartBug> lockdep_assert_irqs_disabled ( ) ; <S2SV_EndBug> if ( softirq_count ( ) == ( cnt & SOFTIRQ_MASK ) ) trace_softirqs_on ( _RET_IP_ ) ; <S2SV_StartBug> preempt_count_sub ( cnt ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { lockdep_assert_irqs_disabled ( ) ; if ( preempt_count ( ) == cnt ) trace_preempt_on ( CALLER_ADDR0 , get_lock_parent_ip ( ) <S2SV_ModStart> _RET_IP_ ) ; __preempt_count_sub <S2SV_ModEnd> ( cnt )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5232\n\n```\nCWE-362 hsm_com_errno_t unix_client_connect ( hsm_com_client_hdl_t * hdl ) { int fd , len ; struct sockaddr_un unix_addr ; <S2SV_StartBug> if ( ( fd = socket ( AF_UNIX , SOCK_STREAM , 0 ) ) < 0 ) <S2SV_EndBug> { return HSM_COM_ERROR ; } memset ( & unix_addr , 0 , sizeof ( unix_addr ) ) ; unix_addr . sun_family = AF_UNIX ; if ( strlen ( hdl -> c_path ) >= sizeof ( unix_addr . sun_path ) ) { <S2SV_StartBug> close ( fd ) ; <S2SV_EndBug> return HSM_COM_PATH_ERR ; } snprintf ( unix_addr . sun_path , sizeof ( unix_addr . sun_path ) , \"%s\" , hdl -> c_path ) ; len = SUN_LEN ( & unix_addr ) ; unlink ( unix_addr . sun_path ) ; if ( bind ( fd , ( struct sockaddr * ) & unix_addr , len ) < 0 ) { <S2SV_StartBug> unlink ( hdl -> c_path ) ; <S2SV_EndBug> close ( fd ) ; return HSM_COM_BIND_ERR ; } if ( chmod ( unix_addr . sun_path , S_IRWXU ) < 0 ) { <S2SV_StartBug> unlink ( hdl -> c_path ) ; <S2SV_EndBug> close ( fd ) ; return HSM_COM_CHMOD_ERR ; } memset ( & unix_addr , 0 , sizeof ( unix_addr ) ) ; unix_addr . sun_family = AF_UNIX ; strncpy ( unix_addr . sun_path , hdl -> s_path , sizeof ( unix_addr . sun_path ) ) ; unix_addr . sun_path [ sizeof ( unix_addr . sun_path ) - 1 ] = 0 ; len = SUN_LEN ( & unix_addr ) ; if ( connect ( fd , ( struct sockaddr * ) & unix_addr , len ) < 0 ) { <S2SV_StartBug> unlink ( hdl -> c_path ) ; <S2SV_EndBug> close ( fd ) ; return HSM_COM_CONX_ERR ; } hdl -> client_fd = fd ; hdl -> client_state = HSM_COM_C_STATE_CT ; if ( unix_sck_send_conn ( hdl , 2 ) != HSM_COM_OK ) { hdl -> client_state = HSM_COM_C_STATE_IN ; <S2SV_StartBug> return HSM_COM_SEND_ERR ; <S2SV_EndBug> } return HSM_COM_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sockaddr_un unix_addr ; hsm_com_errno_t res = HSM_COM_OK ; <S2SV_ModStart> ) ) { res = HSM_COM_PATH_ERR ; goto cleanup <S2SV_ModEnd> ; } snprintf <S2SV_ModStart> 0 ) { res = HSM_COM_BIND_ERR ; goto cleanup ; <S2SV_ModEnd> } if ( <S2SV_ModStart> 0 ) { res = HSM_COM_CHMOD_ERR ; goto cleanup <S2SV_ModEnd> ; } memset <S2SV_ModStart> 0 ) { res = HSM_COM_CONX_ERR ; goto cleanup <S2SV_ModEnd> ; } hdl <S2SV_ModStart> = HSM_COM_C_STATE_IN ; res = HSM_COM_SEND_ERR ; } return res ; cleanup : close ( fd ) ; return res <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15945\n\n```\nCWE-000 int luaG_traceexec ( lua_State * L , const Instruction * pc ) { CallInfo * ci = L -> ci ; lu_byte mask = L -> hookmask ; <S2SV_StartBug> int counthook ; <S2SV_EndBug> if ( ! ( mask & ( LUA_MASKLINE | LUA_MASKCOUNT ) ) ) { ci -> u . l . trap = 0 ; return 0 ; } pc ++ ; ci -> u . l . savedpc = pc ; counthook = ( -- L -> hookcount == 0 && ( mask & LUA_MASKCOUNT ) ) ; if ( counthook ) resethookcount ( L ) ; else if ( ! ( mask & LUA_MASKLINE ) ) return 1 ; if ( ci -> callstatus & CIST_HOOKYIELD ) { ci -> callstatus &= ~ CIST_HOOKYIELD ; return 1 ; } if ( ! isIT ( * ( ci -> u . l . savedpc - 1 ) ) ) L -> top = ci -> top ; if ( counthook ) luaD_hook ( L , LUA_HOOKCOUNT , - 1 , 0 , 0 ) ; if ( mask & LUA_MASKLINE ) { <S2SV_StartBug> const Proto * p = ci_func ( ci ) -> p ; <S2SV_EndBug> int npci = pcRel ( pc , p ) ; if ( npci == 0 || <S2SV_StartBug> pc <= L -> oldpc || <S2SV_EndBug> <S2SV_StartBug> changedline ( p , pcRel ( L -> oldpc , p ) , npci ) ) { <S2SV_EndBug> int newline = luaG_getfuncline ( p , npci ) ; luaD_hook ( L , LUA_HOOKLINE , newline , 0 , 0 ) ; } <S2SV_StartBug> L -> oldpc = pc ; <S2SV_EndBug> } if ( L -> status == LUA_YIELD ) { if ( counthook ) L -> hookcount = 1 ; ci -> u . l . savedpc -- ; ci -> callstatus |= CIST_HOOKYIELD ; luaD_throw ( L , LUA_YIELD ) ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> hookmask ; const Proto * p = ci_func ( ci ) -> p ; int counthook ; int oldpc = ( L -> oldpc < p -> sizecode ) ? L -> oldpc : 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> LUA_MASKLINE ) { <S2SV_ModEnd> int npci = <S2SV_ModStart> || pc <= invpcRel ( oldpc , p ) <S2SV_ModEnd> || changedline ( <S2SV_ModStart> ( p , oldpc <S2SV_ModEnd> , npci ) <S2SV_ModStart> -> oldpc = npci <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 <S2SV_StartBug> static void sample_hbp_handler ( struct perf_event * bp , int nmi , <S2SV_EndBug> struct perf_sample_data * data , struct pt_regs * regs ) { printk ( KERN_INFO \"%s<S2SV_blank>value<S2SV_blank>is<S2SV_blank>changed\\\\n\" , ksym_name ) ; dump_stack ( ) ; printk ( KERN_INFO \"Dump<S2SV_blank>stack<S2SV_blank>from<S2SV_blank>sample_hbp_handler\\\\n\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> perf_event * bp <S2SV_ModEnd> , struct perf_sample_data\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8929\n\n```\nCWE-416 static void test_modules ( ) { assert_true_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.one<S2SV_blank>+<S2SV_blank>1<S2SV_blank>==<S2SV_blank>tests.constants.two<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.foo<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.empty<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.empty()<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[1].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>or<S2SV_blank>true<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[0]<S2SV_blank>==<S2SV_blank>0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[1]<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[0]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[2]<S2SV_blank>==<S2SV_blank>\\\\\"baz\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"foo\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"bar\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"bar\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2,3)<S2SV_blank>==<S2SV_blank>6<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0,3.0)<S2SV_blank>==<S2SV_blank>6.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.length(\\\\\"dummy\\\\\")<S2SV_blank>==<S2SV_blank>5<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.isum(1,1)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,1.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"foo\\\\\")<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"bar\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/i,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/is,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>7\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_error ( \"import<S2SV_blank>\\\\\"\\\\\\\\x00\\\\\"\" , ERROR_INVALID_MODULE_NAME ) ; assert_error ( \"import<S2SV_blank>\\\\\"\\\\\"\" , ERROR_INVALID_MODULE_NAME ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.one<S2SV_blank>+<S2SV_blank>1<S2SV_blank>==<S2SV_blank>tests.constants.two<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.foo<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.empty<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.empty()<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[1].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>or<S2SV_blank>true<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[0]<S2SV_blank>==<S2SV_blank>0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[1]<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[0]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[2]<S2SV_blank>==<S2SV_blank>\\\\\"baz\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"foo\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"bar\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"bar\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2,3)<S2SV_blank>==<S2SV_blank>6<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0,3.0)<S2SV_blank>==<S2SV_blank>6.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.foobar(1)<S2SV_blank>==<S2SV_blank>tests.foobar(1)<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.foobar(1)<S2SV_blank>!=<S2SV_blank>tests.foobar(2)<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.length(\\\\\"dummy\\\\\")<S2SV_blank>==<S2SV_blank>5<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.isum(1,1)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,1.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"foo\\\\\")<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"bar\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/i,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/is,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>7\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static int misaligned_fpu_store ( struct pt_regs * regs , __u32 opcode , int displacement_not_indexed , int width_shift , int do_paired_load ) { int error ; int srcreg ; __u64 address ; error = generate_and_check_address ( regs , opcode , displacement_not_indexed , width_shift , & address ) ; if ( error < 0 ) { return error ; } <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_EMULATION_FAULTS , 1 , 0 , regs , address ) ; <S2SV_EndBug> srcreg = ( opcode >> 4 ) & 0x3f ; if ( user_mode ( regs ) ) { __u64 buffer ; __u32 buflo = 0xffffffffUL , bufhi = 0xffffffffUL ; if ( ! access_ok ( VERIFY_WRITE , ( unsigned long ) address , 1UL << width_shift ) ) { return - 1 ; } if ( last_task_used_math == current ) { enable_fpu ( ) ; save_fpu ( current ) ; disable_fpu ( ) ; last_task_used_math = NULL ; regs -> sr |= SR_FD ; } switch ( width_shift ) { case 2 : buflo = current -> thread . xstate -> hardfpu . fp_regs [ srcreg ] ; break ; case 3 : if ( do_paired_load ) { buflo = current -> thread . xstate -> hardfpu . fp_regs [ srcreg ] ; bufhi = current -> thread . xstate -> hardfpu . fp_regs [ srcreg + 1 ] ; } else { # if defined ( CONFIG_CPU_LITTLE_ENDIAN ) bufhi = current -> thread . xstate -> hardfpu . fp_regs [ srcreg ] ; buflo = current -> thread . xstate -> hardfpu . fp_regs [ srcreg + 1 ] ; # else buflo = current -> thread . xstate -> hardfpu . fp_regs [ srcreg ] ; bufhi = current -> thread . xstate -> hardfpu . fp_regs [ srcreg + 1 ] ; # endif } break ; default : printk ( \"Unexpected<S2SV_blank>width_shift<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>misaligned_fpu_store,<S2SV_blank>PC=%08lx\\\\n\" , width_shift , ( unsigned long ) regs -> pc ) ; break ; } * ( __u32 * ) & buffer = buflo ; * ( 1 + ( __u32 * ) & buffer ) = bufhi ; if ( __copy_user ( ( void * ) ( int ) address , & buffer , ( 1 << width_shift ) ) > 0 ) { return - 1 ; } return 0 ; } else { die ( \"Misaligned<S2SV_blank>FPU<S2SV_blank>load<S2SV_blank>inside<S2SV_blank>kernel\" , regs , 0 ) ; return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , 1 , <S2SV_ModEnd> regs , address\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4098\n\n```\nCWE-119 static int fallocate_chunk ( struct inode * inode , loff_t offset , loff_t len , int mode ) { struct gfs2_inode * ip = GFS2_I ( inode ) ; struct buffer_head * dibh ; int error ; <S2SV_StartBug> u64 start = offset >> PAGE_CACHE_SHIFT ; <S2SV_EndBug> unsigned int start_offset = offset & ~ PAGE_CACHE_MASK ; <S2SV_StartBug> u64 end = ( offset + len - 1 ) >> PAGE_CACHE_SHIFT ; <S2SV_EndBug> pgoff_t curr ; struct page * page ; unsigned int end_offset = ( offset + len ) & ~ PAGE_CACHE_MASK ; unsigned int from , to ; if ( ! end_offset ) end_offset = PAGE_CACHE_SIZE ; error = gfs2_meta_inode_buffer ( ip , & dibh ) ; if ( unlikely ( error ) ) goto out ; gfs2_trans_add_bh ( ip -> i_gl , dibh , 1 ) ; if ( gfs2_is_stuffed ( ip ) ) { error = gfs2_unstuff_dinode ( ip , NULL ) ; if ( unlikely ( error ) ) goto out ; } curr = start ; offset = start << PAGE_CACHE_SHIFT ; from = start_offset ; to = PAGE_CACHE_SIZE ; while ( curr <= end ) { page = grab_cache_page_write_begin ( inode -> i_mapping , curr , AOP_FLAG_NOFS ) ; if ( unlikely ( ! page ) ) { error = - ENOMEM ; goto out ; } if ( curr == end ) to = end_offset ; error = write_empty_blocks ( page , from , to , mode ) ; if ( ! error && offset + to > inode -> i_size && <S2SV_StartBug> ! ( mode & FALLOC_FL_KEEP_SIZE ) ) { <S2SV_EndBug> <S2SV_StartBug> i_size_write ( inode , offset + to ) ; <S2SV_EndBug> } unlock_page ( page ) ; page_cache_release ( page ) ; if ( error ) goto out ; curr ++ ; offset += PAGE_CACHE_SIZE ; from = 0 ; } <S2SV_StartBug> mark_inode_dirty ( inode ) ; <S2SV_EndBug> brelse ( dibh ) ; out : <S2SV_StartBug> return error ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int error ; unsigned int nr_blks ; sector_t lblock <S2SV_ModEnd> = offset >> <S2SV_ModStart> = offset >> inode -> i_blkbits ; error = gfs2_meta_inode_buffer ( ip , & dibh ) ; if ( unlikely ( error ) ) return error ; gfs2_trans_add_bh ( ip -> i_gl , dibh , 1 ) ; if ( gfs2_is_stuffed ( ip ) ) { error = gfs2_unstuff_dinode ( ip , NULL ) ; if ( unlikely ( error ) ) goto out ; } while ( len ) { struct buffer_head bh_map = { . b_state = 0 , . b_blocknr = 0 } ; bh_map . b_size = len ; set_buffer_zeronew ( & bh_map ) ; error = gfs2_block_map ( inode , lblock , & bh_map , 1 ) ; if ( unlikely ( error ) ) goto out ; len -= bh_map . b_size ; nr_blks = bh_map . b_size >> inode -> i_blkbits ; lblock += nr_blks ; if ( ! buffer_new ( & bh_map ) ) continue ; if ( unlikely ( ! buffer_zeronew ( & bh_map ) ) ) { error = - EIO ; goto out ; } } if <S2SV_ModEnd> ( offset + <S2SV_ModStart> offset + len <S2SV_ModEnd> > inode -> <S2SV_ModStart> FALLOC_FL_KEEP_SIZE ) ) <S2SV_ModEnd> i_size_write ( inode <S2SV_ModStart> , offset + len ) ; <S2SV_ModEnd> mark_inode_dirty ( inode <S2SV_ModStart> mark_inode_dirty ( inode <S2SV_ModEnd> ) ; out <S2SV_ModStart> ; out : brelse ( dibh ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12987\n\n```\nCWE-125 static int parse_elements ( netdissect_options * ndo , struct mgmt_body_t * pbody , const u_char * p , int offset , u_int length ) { u_int elementlen ; struct ssid_t ssid ; struct challenge_t challenge ; struct rates_t rates ; struct ds_t ds ; struct cf_t cf ; struct tim_t tim ; pbody -> challenge_present = 0 ; pbody -> ssid_present = 0 ; pbody -> rates_present = 0 ; pbody -> ds_present = 0 ; pbody -> cf_present = 0 ; pbody -> tim_present = 0 ; while ( length != 0 ) { if ( ! ND_TTEST2 ( * ( p + offset ) , 2 ) ) return 0 ; if ( length < 2 ) return 0 ; elementlen = * ( p + offset + 1 ) ; if ( ! ND_TTEST2 ( * ( p + offset + 2 ) , elementlen ) ) return 0 ; if ( length < elementlen + 2 ) return 0 ; switch ( * ( p + offset ) ) { case E_SSID : memcpy ( & ssid , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( ssid . length != 0 ) { if ( ssid . length > sizeof ( ssid . ssid ) - 1 ) return 0 ; if ( ! ND_TTEST2 ( * ( p + offset ) , ssid . length ) ) return 0 ; if ( length < ssid . length ) return 0 ; memcpy ( & ssid . ssid , p + offset , ssid . length ) ; offset += ssid . length ; length -= ssid . length ; } ssid . ssid [ ssid . length ] = '\\\\0' ; if ( ! pbody -> ssid_present ) { pbody -> ssid = ssid ; pbody -> ssid_present = 1 ; } break ; case E_CHALLENGE : memcpy ( & challenge , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( challenge . length != 0 ) { if ( challenge . length > sizeof ( challenge . text ) - 1 ) return 0 ; if ( ! ND_TTEST2 ( * ( p + offset ) , challenge . length ) ) return 0 ; if ( length < challenge . length ) return 0 ; memcpy ( & challenge . text , p + offset , challenge . length ) ; offset += challenge . length ; length -= challenge . length ; } challenge . text [ challenge . length ] = '\\\\0' ; if ( ! pbody -> challenge_present ) { pbody -> challenge = challenge ; pbody -> challenge_present = 1 ; } break ; case E_RATES : memcpy ( & rates , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( rates . length != 0 ) { if ( rates . length > sizeof rates . rate ) return 0 ; if ( ! ND_TTEST2 ( * ( p + offset ) , rates . length ) ) return 0 ; if ( length < rates . length ) return 0 ; memcpy ( & rates . rate , p + offset , rates . length ) ; offset += rates . length ; length -= rates . length ; } if ( ! pbody -> rates_present && rates . length != 0 ) { pbody -> rates = rates ; pbody -> rates_present = 1 ; } break ; case E_DS : memcpy ( & ds , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( ds . length != 1 ) { offset += ds . length ; length -= ds . length ; break ; } ds . channel = * ( p + offset ) ; offset += 1 ; length -= 1 ; if ( ! pbody -> ds_present ) { pbody -> ds = ds ; pbody -> ds_present = 1 ; } break ; case E_CF : memcpy ( & cf , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( cf . length != 6 ) { offset += cf . length ; length -= cf . length ; break ; } memcpy ( & cf . count , p + offset , 6 ) ; offset += 6 ; length -= 6 ; if ( ! pbody -> cf_present ) { pbody -> cf = cf ; pbody -> cf_present = 1 ; } break ; case E_TIM : memcpy ( & tim , p + offset , 2 ) ; offset += 2 ; length -= 2 ; if ( tim . length <= 3 ) { offset += tim . length ; length -= tim . length ; break ; } if ( tim . length - 3 > ( int ) sizeof tim . bitmap ) return 0 ; memcpy ( & tim . count , p + offset , 3 ) ; offset += 3 ; length -= 3 ; <S2SV_StartBug> memcpy ( tim . bitmap , p + ( tim . length - 3 ) , <S2SV_EndBug> <S2SV_StartBug> ( tim . length - 3 ) ) ; <S2SV_EndBug> offset += tim . length - 3 ; <S2SV_StartBug> length -= tim . length - 3 ; <S2SV_EndBug> if ( ! pbody -> tim_present ) { pbody -> tim = tim ; pbody -> tim_present = 1 ; } break ; default : # if 0 ND_PRINT ( ( ndo , \"(1)<S2SV_blank>unhandled<S2SV_blank>element_id<S2SV_blank>(%d)<S2SV_blank><S2SV_blank>\" , * ( p + offset ) ) ) ; # endif offset += 2 + elementlen ; length -= 2 + elementlen ; break ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , p + offset + 3 , <S2SV_ModEnd> tim . length <S2SV_ModStart> - 3 ) ; offset += <S2SV_ModEnd> tim . length <S2SV_ModStart> length - 3 ; length -= <S2SV_ModEnd> tim . length <S2SV_ModStart> - 3 ; <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10540\n\n```\nCWE-787 int ParseDsdiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t infilesize , total_samples ; DFFFileHeader dff_file_header ; DFFChunkHeader dff_chunk_header ; uint32_t bcount ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & dff_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & dff_file_header ) + 4 , sizeof ( DFFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( DFFFileHeader ) - 4 ) || strncmp ( dff_file_header . formType , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_file_header , sizeof ( DFFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackBigEndianToNative ( & dff_file_header , DFFFileHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && dff_file_header . ckDataSize && dff_file_header . ckDataSize + 1 && dff_file_header . ckDataSize + 12 != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file<S2SV_blank>(by<S2SV_blank>total<S2SV_blank>size)!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"file<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_file_header . ckDataSize ) ; # endif while ( 1 ) { if ( ! DoReadFile ( infile , & dff_chunk_header , sizeof ( DFFChunkHeader ) , & bcount ) || bcount != sizeof ( DFFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_chunk_header , sizeof ( DFFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( debug_logging_mode ) error_line ( \"chunk<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_chunk_header . ckDataSize ) ; if ( ! strncmp ( dff_chunk_header . ckID , \"FVER\" , 4 ) ) { uint32_t version ; if ( dff_chunk_header . ckDataSize != sizeof ( version ) || ! DoReadFile ( infile , & version , sizeof ( version ) , & bcount ) || bcount != sizeof ( version ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & version , sizeof ( version ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & version , \"L\" ) ; if ( debug_logging_mode ) error_line ( \"dsdiff<S2SV_blank>file<S2SV_blank>version<S2SV_blank>=<S2SV_blank>0x%08x\" , version ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"PROP\" , 4 ) ) { char * prop_chunk ; if ( dff_chunk_header . ckDataSize < 4 || dff_chunk_header . ckDataSize > 1024 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>total\" , ( int ) dff_chunk_header . ckDataSize ) ; prop_chunk = malloc ( ( size_t ) dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize , & bcount ) || bcount != dff_chunk_header . ckDataSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } if ( ! strncmp ( prop_chunk , \"SND<S2SV_blank>\" , 4 ) ) { char * cptr = prop_chunk + 4 , * eptr = prop_chunk + dff_chunk_header . ckDataSize ; uint16_t numChannels , chansSpecified , chanMask = 0 ; uint32_t sampleRate ; while ( eptr - cptr >= sizeof ( dff_chunk_header ) ) { memcpy ( & dff_chunk_header , cptr , sizeof ( dff_chunk_header ) ) ; cptr += sizeof ( dff_chunk_header ) ; WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( eptr - cptr >= dff_chunk_header . ckDataSize ) { if ( ! strncmp ( dff_chunk_header . ckID , \"FS<S2SV_blank><S2SV_blank>\" , 4 ) && dff_chunk_header . ckDataSize == 4 ) { memcpy ( & sampleRate , cptr , sizeof ( sampleRate ) ) ; WavpackBigEndianToNative ( & sampleRate , \"L\" ) ; cptr += dff_chunk_header . ckDataSize ; if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>sample<S2SV_blank>rate<S2SV_blank>of<S2SV_blank>%u<S2SV_blank>Hz\" , sampleRate ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CHNL\" , 4 ) && dff_chunk_header . ckDataSize >= 2 ) { memcpy ( & numChannels , cptr , sizeof ( numChannels ) ) ; WavpackBigEndianToNative ( & numChannels , \"S\" ) ; cptr += sizeof ( numChannels ) ; chansSpecified = ( int ) ( dff_chunk_header . ckDataSize - sizeof ( numChannels ) ) / 4 ; while ( chansSpecified -- ) { if ( ! strncmp ( cptr , \"SLFT\" , 4 ) || ! strncmp ( cptr , \"MLFT\" , 4 ) ) chanMask |= 0x1 ; else if ( ! strncmp ( cptr , \"SRGT\" , 4 ) || ! strncmp ( cptr , \"MRGT\" , 4 ) ) chanMask |= 0x2 ; else if ( ! strncmp ( cptr , \"LS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x10 ; else if ( ! strncmp ( cptr , \"RS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x20 ; else if ( ! strncmp ( cptr , \"C<S2SV_blank><S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x4 ; else if ( ! strncmp ( cptr , \"LFE<S2SV_blank>\" , 4 ) ) chanMask |= 0x8 ; else if ( debug_logging_mode ) error_line ( \"undefined<S2SV_blank>channel<S2SV_blank>ID<S2SV_blank>%c%c%c%c\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; cptr += 4 ; } if ( debug_logging_mode ) error_line ( \"%d<S2SV_blank>channels,<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>0x%08x\" , numChannels , chanMask ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CMPR\" , 4 ) && dff_chunk_header . ckDataSize >= 4 ) { if ( strncmp ( cptr , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"DSDIFF<S2SV_blank>files<S2SV_blank>must<S2SV_blank>be<S2SV_blank>uncompressed,<S2SV_blank>not<S2SV_blank>\\\\\"%c%c%c%c\\\\\"!\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } cptr += dff_chunk_header . ckDataSize ; } else { if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP/SND<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; cptr += dff_chunk_header . ckDataSize ; } } else { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } } if ( chanMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>DSDIFF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( chanMask ) config -> channel_mask = chanMask ; config -> bits_per_sample = 8 ; config -> bytes_per_sample = 1 ; config -> num_channels = numChannels ; config -> sample_rate = sampleRate / 8 ; config -> qmode |= QMODE_DSD_MSB_FIRST ; } else if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>unknown<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , prop_chunk [ 0 ] , prop_chunk [ 1 ] , prop_chunk [ 2 ] , prop_chunk [ 3 ] , dff_chunk_header . ckDataSize ) ; free ( prop_chunk ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"DSD<S2SV_blank>\" , 4 ) ) { total_samples = dff_chunk_header . ckDataSize / config -> num_channels ; break ; } else { int bytes_to_copy = ( int ) ( ( ( dff_chunk_header . ckDataSize ) + 1 ) & ~ ( int64_t ) 1 ) ; <S2SV_StartBug> char * buff = malloc ( bytes_to_copy ) ; <S2SV_EndBug> if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( debug_logging_mode ) error_line ( \"setting<S2SV_blank>configuration<S2SV_blank>with<S2SV_blank>%lld<S2SV_blank>samples\" , total_samples ) ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char * buff ; if ( bytes_to_copy < 0 || bytes_to_copy > 4194304 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } buff\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8_hex_search ( MACROBLOCK * x , BLOCK * b , BLOCKD * d , int_mv * ref_mv , int_mv * best_mv , int search_param , int sad_per_bit , const vp8_variance_fn_ptr_t * vfp , int * mvsadcost [ 2 ] , int * mvcost [ 2 ] , int_mv * center_mv ) { MV hex [ 6 ] = { { - 1 , - 2 } , { 1 , - 2 } , { 2 , 0 } , { 1 , 2 } , { - 1 , 2 } , { - 2 , 0 } } ; MV neighbors [ 4 ] = { { 0 , - 1 } , { - 1 , 0 } , { 1 , 0 } , { 0 , 1 } } ; int i , j ; unsigned char * what = ( * ( b -> base_src ) + b -> src ) ; int what_stride = b -> src_stride ; int pre_stride = x -> e_mbd . pre . y_stride ; unsigned char * base_pre = x -> e_mbd . pre . y_buffer ; int in_what_stride = pre_stride ; int br , bc ; int_mv this_mv ; unsigned int bestsad ; unsigned int thissad ; unsigned char * base_offset ; unsigned char * this_offset ; int k = - 1 ; int all_in ; int best_site = - 1 ; int hex_range = 127 ; int dia_range = 8 ; int_mv fcenter_mv ; fcenter_mv . as_mv . row = center_mv -> as_mv . row >> 3 ; fcenter_mv . as_mv . col = center_mv -> as_mv . col >> 3 ; <S2SV_StartBug> vp8_clamp_mv ( ref_mv , x -> mv_col_min , x -> mv_col_max , x -> mv_row_min , x -> mv_row_max ) ; <S2SV_EndBug> br = ref_mv -> as_mv . row ; bc = ref_mv -> as_mv . col ; base_offset = ( unsigned char * ) ( base_pre + d -> offset ) ; this_offset = base_offset + ( br * ( pre_stride ) ) + bc ; this_mv . as_mv . row = br ; this_mv . as_mv . col = bc ; <S2SV_StartBug> bestsad = vfp -> sdf ( what , what_stride , this_offset , in_what_stride , UINT_MAX ) <S2SV_EndBug> + mvsad_err_cost ( & this_mv , & fcenter_mv , mvsadcost , sad_per_bit ) ; # if CONFIG_MULTI_RES_ENCODING if ( search_param >= 6 ) goto cal_neighbors ; else if ( search_param >= 5 ) hex_range = 4 ; else if ( search_param >= 4 ) hex_range = 6 ; else if ( search_param >= 3 ) hex_range = 15 ; else if ( search_param >= 2 ) hex_range = 31 ; else if ( search_param >= 1 ) hex_range = 63 ; dia_range = 8 ; <S2SV_StartBug> # endif <S2SV_EndBug> CHECK_BOUNDS ( 2 ) if ( all_in ) { for ( i = 0 ; i < 6 ; i ++ ) { this_mv . as_mv . row = br + hex [ i ] . row ; this_mv . as_mv . col = bc + hex [ i ] . col ; this_offset = base_offset + ( this_mv . as_mv . row * in_what_stride ) + this_mv . as_mv . col ; <S2SV_StartBug> thissad = vfp -> sdf ( what , what_stride , this_offset , in_what_stride , bestsad ) ; <S2SV_EndBug> CHECK_BETTER } } else { for ( i = 0 ; i < 6 ; i ++ ) { this_mv . as_mv . row = br + hex [ i ] . row ; this_mv . as_mv . col = bc + hex [ i ] . col ; CHECK_POINT this_offset = base_offset + ( this_mv . as_mv . row * in_what_stride ) + this_mv . as_mv . col ; <S2SV_StartBug> thissad = vfp -> sdf ( what , what_stride , this_offset , in_what_stride , bestsad ) ; <S2SV_EndBug> CHECK_BETTER } } if ( best_site == - 1 ) goto cal_neighbors ; else { br += hex [ best_site ] . row ; bc += hex [ best_site ] . col ; k = best_site ; } for ( j = 1 ; j < hex_range ; j ++ ) { best_site = - 1 ; CHECK_BOUNDS ( 2 ) if ( all_in ) { for ( i = 0 ; i < 3 ; i ++ ) { this_mv . as_mv . row = br + next_chkpts [ k ] [ i ] . row ; this_mv . as_mv . col = bc + next_chkpts [ k ] [ i ] . col ; this_offset = base_offset + ( this_mv . as_mv . row * ( in_what_stride ) ) + this_mv . as_mv . col ; <S2SV_StartBug> thissad = vfp -> sdf ( what , what_stride , this_offset , in_what_stride , bestsad ) ; <S2SV_EndBug> CHECK_BETTER } } else { for ( i = 0 ; i < 3 ; i ++ ) { this_mv . as_mv . row = br + next_chkpts [ k ] [ i ] . row ; this_mv . as_mv . col = bc + next_chkpts [ k ] [ i ] . col ; CHECK_POINT this_offset = base_offset + ( this_mv . as_mv . row * ( in_what_stride ) ) + this_mv . as_mv . col ; <S2SV_StartBug> thissad = vfp -> sdf ( what , what_stride , this_offset , in_what_stride , bestsad ) ; <S2SV_EndBug> CHECK_BETTER } } if ( best_site == - 1 ) break ; else { br += next_chkpts [ k ] [ best_site ] . row ; bc += next_chkpts [ k ] [ best_site ] . col ; k += 5 + best_site ; if ( k >= 12 ) k -= 12 ; else if ( k >= 6 ) k -= 6 ; } } cal_neighbors : for ( j = 0 ; j < dia_range ; j ++ ) { best_site = - 1 ; CHECK_BOUNDS ( 1 ) if ( all_in ) { for ( i = 0 ; i < 4 ; i ++ ) { this_mv . as_mv . row = br + neighbors [ i ] . row ; this_mv . as_mv . col = bc + neighbors [ i ] . col ; this_offset = base_offset + ( this_mv . as_mv . row * ( in_what_stride ) ) + this_mv . as_mv . col ; <S2SV_StartBug> thissad = vfp -> sdf ( what , what_stride , this_offset , in_what_stride , bestsad ) ; <S2SV_EndBug> CHECK_BETTER } } else { for ( i = 0 ; i < 4 ; i ++ ) { this_mv . as_mv . row = br + neighbors [ i ] . row ; this_mv . as_mv . col = bc + neighbors [ i ] . col ; CHECK_POINT this_offset = base_offset + ( this_mv . as_mv . row * ( in_what_stride ) ) + this_mv . as_mv . col ; <S2SV_StartBug> thissad = vfp -> sdf ( what , what_stride , this_offset , in_what_stride , bestsad ) ; <S2SV_EndBug> CHECK_BETTER } } if ( best_site == - 1 ) break ; else { br += neighbors [ best_site ] . row ; bc += neighbors [ best_site ] . col ; } } best_mv -> as_mv . row = br ; best_mv -> as_mv . col = bc ; return bestsad ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> >> 3 ; ( void ) mvcost ; <S2SV_ModStart> this_offset , in_what_stride <S2SV_ModEnd> ) + mvsad_err_cost <S2SV_ModStart> 8 ; # else ( void ) search_param ; # <S2SV_ModStart> this_offset , in_what_stride <S2SV_ModEnd> ) ; CHECK_BETTER <S2SV_ModStart> this_offset , in_what_stride <S2SV_ModEnd> ) ; CHECK_BETTER <S2SV_ModStart> this_offset , in_what_stride <S2SV_ModEnd> ) ; CHECK_BETTER <S2SV_ModStart> this_offset , in_what_stride <S2SV_ModEnd> ) ; CHECK_BETTER <S2SV_ModStart> this_offset , in_what_stride <S2SV_ModEnd> ) ; CHECK_BETTER <S2SV_ModStart> this_offset , in_what_stride <S2SV_ModEnd> ) ; CHECK_BETTER\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4177\n\n```\nCWE-000 struct vfsmount * collect_mounts ( struct path * path ) { struct mount * tree ; <S2SV_StartBug> namespace_lock ( ) ; <S2SV_EndBug> tree = copy_tree ( real_mount ( path -> mnt ) , path -> dentry , CL_COPY_ALL | CL_PRIVATE ) ; namespace_unlock ( ) ; if ( IS_ERR ( tree ) ) return ERR_CAST ( tree ) ; return & tree -> mnt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; if ( ! check_mnt ( real_mount ( path -> mnt ) ) ) tree = ERR_PTR ( - EINVAL ) ; else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-13113\n\n```\nCWE-416 static void exif_mnote_data_olympus_load ( ExifMnoteData * en , const unsigned char * buf , unsigned int buf_size ) { ExifMnoteDataOlympus * n = ( ExifMnoteDataOlympus * ) en ; ExifShort c ; size_t i , tcount , o , o2 , datao = 6 , base = 0 ; if ( ! n || ! buf || ! buf_size ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } o2 = 6 + n -> offset ; if ( CHECKOVERFLOW ( o2 , buf_size , 10 ) ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } n -> version = exif_mnote_data_olympus_identify_variant ( buf + o2 , buf_size - o2 ) ; switch ( n -> version ) { case olympusV1 : case sanyoV1 : case epsonV1 : exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Olympus/Sanyo/Epson<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v1...\" ) ; if ( buf [ o2 + 6 ] == 1 ) n -> order = EXIF_BYTE_ORDER_INTEL ; else if ( buf [ o2 + 6 + 1 ] == 1 ) n -> order = EXIF_BYTE_ORDER_MOTOROLA ; o2 += 8 ; c = exif_get_short ( buf + o2 , n -> order ) ; if ( ( ! ( c & 0xFF ) ) && ( c > 0x500 ) ) { if ( n -> order == EXIF_BYTE_ORDER_INTEL ) { n -> order = EXIF_BYTE_ORDER_MOTOROLA ; } else { n -> order = EXIF_BYTE_ORDER_INTEL ; } } break ; case olympusV2 : datao = o2 ; o2 += 8 ; if ( CHECKOVERFLOW ( o2 , buf_size , 4 ) ) return ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Olympus<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v2<S2SV_blank>(0x%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x)...\" , buf [ o2 + 0 ] , buf [ o2 + 1 ] , buf [ o2 + 2 ] , buf [ o2 + 3 ] ) ; if ( ( buf [ o2 ] == 'I' ) && ( buf [ o2 + 1 ] == 'I' ) ) n -> order = EXIF_BYTE_ORDER_INTEL ; else if ( ( buf [ o2 ] == 'M' ) && ( buf [ o2 + 1 ] == 'M' ) ) n -> order = EXIF_BYTE_ORDER_MOTOROLA ; o2 += 4 ; break ; case nikonV1 : o2 += 6 ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Nikon<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v1<S2SV_blank>(0x%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>\" \"%02x)...\" , buf [ o2 + 0 ] , buf [ o2 + 1 ] , buf [ o2 + 2 ] , buf [ o2 + 3 ] ) ; o2 += 1 ; o2 += 1 ; base = MNOTE_NIKON1_TAG_BASE ; c = exif_get_short ( buf + o2 , n -> order ) ; if ( ( ! ( c & 0xFF ) ) && ( c > 0x500 ) ) { if ( n -> order == EXIF_BYTE_ORDER_INTEL ) { n -> order = EXIF_BYTE_ORDER_MOTOROLA ; } else { n -> order = EXIF_BYTE_ORDER_INTEL ; } } break ; case nikonV2 : o2 += 6 ; if ( CHECKOVERFLOW ( o2 , buf_size , 12 ) ) return ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Nikon<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v2<S2SV_blank>(0x%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>\" \"%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x)...\" , buf [ o2 + 0 ] , buf [ o2 + 1 ] , buf [ o2 + 2 ] , buf [ o2 + 3 ] , buf [ o2 + 4 ] , buf [ o2 + 5 ] , buf [ o2 + 6 ] , buf [ o2 + 7 ] ) ; o2 += 1 ; o2 += 1 ; o2 += 2 ; datao = o2 ; if ( ! strncmp ( ( char * ) & buf [ o2 ] , \"II\" , 2 ) ) n -> order = EXIF_BYTE_ORDER_INTEL ; else if ( ! strncmp ( ( char * ) & buf [ o2 ] , \"MM\" , 2 ) ) n -> order = EXIF_BYTE_ORDER_MOTOROLA ; else { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Unknown<S2SV_blank>\" \"byte<S2SV_blank>order<S2SV_blank>\\'%c%c\\'\" , buf [ o2 ] , buf [ o2 + 1 ] ) ; return ; } o2 += 2 ; o2 += 2 ; o2 = datao + exif_get_long ( buf + o2 , n -> order ) ; break ; case nikonV0 : exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Parsing<S2SV_blank>Nikon<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v0<S2SV_blank>(0x%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>\" \"%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x,<S2SV_blank>%02x)...\" , buf [ o2 + 0 ] , buf [ o2 + 1 ] , buf [ o2 + 2 ] , buf [ o2 + 3 ] , buf [ o2 + 4 ] , buf [ o2 + 5 ] , buf [ o2 + 6 ] , buf [ o2 + 7 ] ) ; n -> order = EXIF_BYTE_ORDER_MOTOROLA ; break ; default : exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataOlympus\" , \"Unknown<S2SV_blank>Olympus<S2SV_blank>variant<S2SV_blank>%i.\" , n -> version ) ; return ; } if ( CHECKOVERFLOW ( o2 , buf_size , 2 ) ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } c = exif_get_short ( buf + o2 , n -> order ) ; o2 += 2 ; exif_mnote_data_olympus_clear ( n ) ; n -> entries = exif_mem_alloc ( en -> mem , sizeof ( MnoteOlympusEntry ) * c ) ; if ( ! n -> entries ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteOlympus\" , sizeof ( MnoteOlympusEntry ) * c ) ; return ; } tcount = 0 ; for ( i = c , o = o2 ; i ; -- i , o += 12 ) { size_t s ; <S2SV_StartBug> if ( CHECKOVERFLOW ( o , buf_size , 12 ) ) { <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteOlympus\" , \"Short<S2SV_blank>MakerNote\" ) ; break ; } n -> entries [ tcount ] . tag = exif_get_short ( buf + o , n -> order ) + base ; n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; n -> entries [ tcount ] . order = n -> order ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteOlympus\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_olympus_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; if ( exif_format_get_size ( n -> entries [ tcount ] . format ) && buf_size / exif_format_get_size ( n -> entries [ tcount ] . format ) < n -> entries [ tcount ] . components ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteOlympus\" , \"Tag<S2SV_blank>size<S2SV_blank>overflow<S2SV_blank>detected<S2SV_blank>(%u<S2SV_blank>*<S2SV_blank>%lu)\" , exif_format_get_size ( n -> entries [ tcount ] . format ) , n -> entries [ tcount ] . components ) ; continue ; } s = exif_format_get_size ( n -> entries [ tcount ] . format ) * n -> entries [ tcount ] . components ; n -> entries [ tcount ] . size = s ; if ( s ) { size_t dataofs = o + 8 ; if ( s > 4 ) { dataofs = exif_get_long ( buf + dataofs , n -> order ) + datao ; # ifdef EXIF_OVERCOME_SANYO_OFFSET_BUG if ( dataofs > ( buf_size - s ) && n -> version == sanyoV1 ) { dataofs -= datao + 6 ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteOlympus\" , \"Inconsistent<S2SV_blank>thumbnail<S2SV_blank>tag<S2SV_blank>offset;<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>recover\" ) ; } # endif } if ( CHECKOVERFLOW ( dataofs , buf_size , s ) ) { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteOlympus\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) ( dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( en -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteOlympus\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs , s ) ; } ++ tcount ; } n -> count = tcount ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t s ; memset ( & n -> entries [ tcount ] , 0 , sizeof ( MnoteOlympusEntry ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13233\n\n```\nCWE-362 static unsigned long get_seg_limit ( struct pt_regs * regs , int seg_reg_idx ) { <S2SV_StartBug> struct desc_struct * desc ; <S2SV_EndBug> unsigned long limit ; short sel ; sel = get_segment_selector ( regs , seg_reg_idx ) ; if ( sel < 0 ) return 0 ; if ( user_64bit_mode ( regs ) || v8086_mode ( regs ) ) return - 1L ; if ( ! sel ) return 0 ; <S2SV_StartBug> desc = get_desc ( sel ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! desc ) <S2SV_EndBug> return 0 ; <S2SV_StartBug> limit = get_desc_limit ( desc ) ; <S2SV_EndBug> <S2SV_StartBug> if ( desc -> g ) <S2SV_EndBug> limit = ( limit << 12 ) + 0xfff ; return limit ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct desc_struct <S2SV_ModEnd> desc ; unsigned <S2SV_ModStart> return 0 ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! get_desc ( & desc , sel ) <S2SV_ModEnd> ) return 0 <S2SV_ModStart> = get_desc_limit ( & <S2SV_ModStart> if ( desc . <S2SV_ModEnd> g ) limit\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-19(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8952\n\n```\nCWE-19 static int ext4_xattr_block_list ( struct dentry * dentry , char * buffer , size_t buffer_size ) { struct inode * inode = d_inode ( dentry ) ; struct buffer_head * bh = NULL ; int error ; <S2SV_StartBug> struct mb_cache * ext4_mb_cache = EXT4_GET_MB_CACHE ( inode ) ; <S2SV_EndBug> ea_idebug ( inode , \"buffer=%p,<S2SV_blank>buffer_size=%ld\" , buffer , ( long ) buffer_size ) ; error = 0 ; if ( ! EXT4_I ( inode ) -> i_file_acl ) goto cleanup ; ea_idebug ( inode , \"reading<S2SV_blank>block<S2SV_blank>%llu\" , ( unsigned long long ) EXT4_I ( inode ) -> i_file_acl ) ; bh = sb_bread ( inode -> i_sb , EXT4_I ( inode ) -> i_file_acl ) ; error = - EIO ; if ( ! bh ) goto cleanup ; ea_bdebug ( bh , \"b_count=%d,<S2SV_blank>refcount=%d\" , atomic_read ( & ( bh -> b_count ) ) , le32_to_cpu ( BHDR ( bh ) -> h_refcount ) ) ; if ( ext4_xattr_check_block ( inode , bh ) ) { EXT4_ERROR_INODE ( inode , \"bad<S2SV_blank>block<S2SV_blank>%llu\" , EXT4_I ( inode ) -> i_file_acl ) ; error = - EFSCORRUPTED ; goto cleanup ; } ext4_xattr_cache_insert ( ext4_mb_cache , bh ) ; error = ext4_xattr_list_entries ( dentry , BFIRST ( bh ) , buffer , buffer_size ) ; cleanup : brelse ( bh ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error ; struct mb2_cache <S2SV_ModEnd> * ext4_mb_cache =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9537\n\n```\nCWE-119 tsize_t t2p_readwrite_pdf_image ( T2P * t2p , TIFF * input , TIFF * output ) { tsize_t written = 0 ; unsigned char * buffer = NULL ; unsigned char * samplebuffer = NULL ; tsize_t bufferoffset = 0 ; tsize_t samplebufferoffset = 0 ; tsize_t read = 0 ; tstrip_t i = 0 ; tstrip_t j = 0 ; tstrip_t stripcount = 0 ; tsize_t stripsize = 0 ; tsize_t sepstripcount = 0 ; tsize_t sepstripsize = 0 ; # ifdef OJPEG_SUPPORT toff_t inputoffset = 0 ; uint16 h_samp = 1 ; uint16 v_samp = 1 ; uint16 ri = 1 ; uint32 rows = 0 ; # endif # ifdef JPEG_SUPPORT unsigned char * jpt ; float * xfloatp ; uint64 * sbc ; unsigned char * stripbuffer ; tsize_t striplength = 0 ; uint32 max_striplength = 0 ; # endif if ( t2p -> t2p_error != T2P_ERR_OK ) return ( 0 ) ; if ( t2p -> pdf_transcode == T2P_TRANSCODE_RAW ) { # ifdef CCITT_SUPPORT if ( t2p -> pdf_compression == T2P_COMPRESS_G4 ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>\" \"t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } TIFFReadRawStrip ( input , 0 , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; if ( t2p -> tiff_fillorder == FILLORDER_LSB2MSB ) { TIFFReverseBits ( buffer , t2p -> tiff_datasize ) ; } t2pWriteFile ( output , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; _TIFFfree ( buffer ) ; return ( t2p -> tiff_datasize ) ; } # endif # ifdef ZIP_SUPPORT if ( t2p -> pdf_compression == T2P_COMPRESS_ZIP ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } memset ( buffer , 0 , t2p -> tiff_datasize ) ; TIFFReadRawStrip ( input , 0 , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; if ( t2p -> tiff_fillorder == FILLORDER_LSB2MSB ) { TIFFReverseBits ( buffer , t2p -> tiff_datasize ) ; } t2pWriteFile ( output , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; _TIFFfree ( buffer ) ; return ( t2p -> tiff_datasize ) ; } # endif # ifdef OJPEG_SUPPORT if ( t2p -> tiff_compression == COMPRESSION_OJPEG ) { if ( t2p -> tiff_dataoffset != 0 ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } memset ( buffer , 0 , t2p -> tiff_datasize ) ; if ( t2p -> pdf_ojpegiflength == 0 ) { inputoffset = t2pSeekFile ( input , 0 , SEEK_CUR ) ; t2pSeekFile ( input , t2p -> tiff_dataoffset , SEEK_SET ) ; t2pReadFile ( input , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; t2pSeekFile ( input , inputoffset , SEEK_SET ) ; t2pWriteFile ( output , ( tdata_t ) buffer , t2p -> tiff_datasize ) ; _TIFFfree ( buffer ) ; return ( t2p -> tiff_datasize ) ; } else { inputoffset = t2pSeekFile ( input , 0 , SEEK_CUR ) ; t2pSeekFile ( input , t2p -> tiff_dataoffset , SEEK_SET ) ; bufferoffset = t2pReadFile ( input , ( tdata_t ) buffer , t2p -> pdf_ojpegiflength ) ; t2p -> pdf_ojpegiflength = 0 ; t2pSeekFile ( input , inputoffset , SEEK_SET ) ; TIFFGetField ( input , TIFFTAG_YCBCRSUBSAMPLING , & h_samp , & v_samp ) ; buffer [ bufferoffset ++ ] = 0xff ; buffer [ bufferoffset ++ ] = 0xdd ; buffer [ bufferoffset ++ ] = 0x00 ; buffer [ bufferoffset ++ ] = 0x04 ; h_samp *= 8 ; v_samp *= 8 ; ri = ( t2p -> tiff_width + h_samp - 1 ) / h_samp ; TIFFGetField ( input , TIFFTAG_ROWSPERSTRIP , & rows ) ; ri *= ( rows + v_samp - 1 ) / v_samp ; buffer [ bufferoffset ++ ] = ( ri >> 8 ) & 0xff ; buffer [ bufferoffset ++ ] = ri & 0xff ; stripcount = TIFFNumberOfStrips ( input ) ; for ( i = 0 ; i < stripcount ; i ++ ) { if ( i != 0 ) { buffer [ bufferoffset ++ ] = 0xff ; buffer [ bufferoffset ++ ] = ( 0xd0 | ( ( i - 1 ) % 8 ) ) ; } bufferoffset += TIFFReadRawStrip ( input , i , ( tdata_t ) & ( ( ( unsigned char * ) buffer ) [ bufferoffset ] ) , - 1 ) ; } t2pWriteFile ( output , ( tdata_t ) buffer , bufferoffset ) ; _TIFFfree ( buffer ) ; return ( bufferoffset ) ; } } else { if ( ! t2p -> pdf_ojpegdata ) { TIFFError ( TIFF2PDF_MODULE , \"No<S2SV_blank>support<S2SV_blank>for<S2SV_blank>OJPEG<S2SV_blank>image<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>bad<S2SV_blank>tables\" , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } memset ( buffer , 0 , t2p -> tiff_datasize ) ; _TIFFmemcpy ( buffer , t2p -> pdf_ojpegdata , t2p -> pdf_ojpegdatalength ) ; bufferoffset = t2p -> pdf_ojpegdatalength ; stripcount = TIFFNumberOfStrips ( input ) ; for ( i = 0 ; i < stripcount ; i ++ ) { if ( i != 0 ) { buffer [ bufferoffset ++ ] = 0xff ; buffer [ bufferoffset ++ ] = ( 0xd0 | ( ( i - 1 ) % 8 ) ) ; } bufferoffset += TIFFReadRawStrip ( input , i , ( tdata_t ) & ( ( ( unsigned char * ) buffer ) [ bufferoffset ] ) , - 1 ) ; } if ( ! ( ( buffer [ bufferoffset - 1 ] == 0xd9 ) && ( buffer [ bufferoffset - 2 ] == 0xff ) ) ) { buffer [ bufferoffset ++ ] = 0xff ; buffer [ bufferoffset ++ ] = 0xd9 ; } t2pWriteFile ( output , ( tdata_t ) buffer , bufferoffset ) ; _TIFFfree ( buffer ) ; return ( bufferoffset ) ; # if 0 TIFFError ( TIFF2PDF_MODULE , \"No<S2SV_blank>support<S2SV_blank>for<S2SV_blank>OJPEG<S2SV_blank>image<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>no<S2SV_blank>JPEG<S2SV_blank>File<S2SV_blank>Interchange<S2SV_blank>offset\" , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; # endif } } # endif # ifdef JPEG_SUPPORT if ( t2p -> tiff_compression == COMPRESSION_JPEG ) { uint32 count = 0 ; buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } memset ( buffer , 0 , t2p -> tiff_datasize ) ; if ( TIFFGetField ( input , TIFFTAG_JPEGTABLES , & count , & jpt ) != 0 ) { if ( count > 4 ) { _TIFFmemcpy ( buffer , jpt , count ) ; bufferoffset += count - 2 ; } } stripcount = TIFFNumberOfStrips ( input ) ; TIFFGetField ( input , TIFFTAG_STRIPBYTECOUNTS , & sbc ) ; for ( i = 0 ; i < stripcount ; i ++ ) { if ( sbc [ i ] > max_striplength ) max_striplength = sbc [ i ] ; } stripbuffer = ( unsigned char * ) _TIFFmalloc ( max_striplength ) ; if ( stripbuffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%u<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , max_striplength , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } for ( i = 0 ; i < stripcount ; i ++ ) { striplength = TIFFReadRawStrip ( input , i , ( tdata_t ) stripbuffer , - 1 ) ; if ( ! t2p_process_jpeg_strip ( stripbuffer , & striplength , buffer , <S2SV_StartBug> & bufferoffset , <S2SV_EndBug> i , t2p -> tiff_length ) ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>process<S2SV_blank>JPEG<S2SV_blank>data<S2SV_blank>in<S2SV_blank>input<S2SV_blank>file<S2SV_blank>%s\" , TIFFFileName ( input ) ) ; _TIFFfree ( samplebuffer ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } } buffer [ bufferoffset ++ ] = 0xff ; buffer [ bufferoffset ++ ] = 0xd9 ; t2pWriteFile ( output , ( tdata_t ) buffer , bufferoffset ) ; _TIFFfree ( stripbuffer ) ; _TIFFfree ( buffer ) ; return ( bufferoffset ) ; } # endif ( void ) 0 ; } if ( t2p -> pdf_sample == T2P_SAMPLE_NOTHING ) { buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } memset ( buffer , 0 , t2p -> tiff_datasize ) ; stripsize = TIFFStripSize ( input ) ; stripcount = TIFFNumberOfStrips ( input ) ; for ( i = 0 ; i < stripcount ; i ++ ) { read = TIFFReadEncodedStrip ( input , i , ( tdata_t ) & buffer [ bufferoffset ] , TIFFmin ( stripsize , t2p -> tiff_datasize - bufferoffset ) ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>strip<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , i , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } bufferoffset += read ; } } else { if ( t2p -> pdf_sample & T2P_SAMPLE_PLANAR_SEPARATE_TO_CONTIG ) { sepstripsize = TIFFStripSize ( input ) ; sepstripcount = TIFFNumberOfStrips ( input ) ; stripsize = sepstripsize * t2p -> tiff_samplesperpixel ; stripcount = sepstripcount / t2p -> tiff_samplesperpixel ; buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } memset ( buffer , 0 , t2p -> tiff_datasize ) ; samplebuffer = ( unsigned char * ) _TIFFmalloc ( stripsize ) ; if ( samplebuffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; _TIFFfree ( buffer ) ; return ( 0 ) ; } for ( i = 0 ; i < stripcount ; i ++ ) { samplebufferoffset = 0 ; for ( j = 0 ; j < t2p -> tiff_samplesperpixel ; j ++ ) { read = TIFFReadEncodedStrip ( input , i + j * stripcount , ( tdata_t ) & ( samplebuffer [ samplebufferoffset ] ) , TIFFmin ( sepstripsize , stripsize - samplebufferoffset ) ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>strip<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , i + j * stripcount , TIFFFileName ( input ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } samplebufferoffset += read ; } t2p_sample_planar_separate_to_contig ( t2p , & ( buffer [ bufferoffset ] ) , samplebuffer , samplebufferoffset ) ; bufferoffset += samplebufferoffset ; } _TIFFfree ( samplebuffer ) ; goto dataready ; } buffer = ( unsigned char * ) _TIFFmalloc ( t2p -> tiff_datasize ) ; if ( buffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } memset ( buffer , 0 , t2p -> tiff_datasize ) ; stripsize = TIFFStripSize ( input ) ; stripcount = TIFFNumberOfStrips ( input ) ; for ( i = 0 ; i < stripcount ; i ++ ) { read = TIFFReadEncodedStrip ( input , i , ( tdata_t ) & buffer [ bufferoffset ] , TIFFmin ( stripsize , t2p -> tiff_datasize - bufferoffset ) ) ; if ( read == - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>on<S2SV_blank>decoding<S2SV_blank>strip<S2SV_blank>%u<S2SV_blank>of<S2SV_blank>%s\" , i , TIFFFileName ( input ) ) ; _TIFFfree ( samplebuffer ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } bufferoffset += read ; } if ( t2p -> pdf_sample & T2P_SAMPLE_REALIZE_PALETTE ) { samplebuffer = ( unsigned char * ) _TIFFrealloc ( ( tdata_t ) buffer , t2p -> tiff_datasize * t2p -> tiff_samplesperpixel ) ; if ( samplebuffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; _TIFFfree ( buffer ) ; return ( 0 ) ; } else { buffer = samplebuffer ; t2p -> tiff_datasize *= t2p -> tiff_samplesperpixel ; } t2p_sample_realize_palette ( t2p , buffer ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_RGBA_TO_RGB ) { t2p -> tiff_datasize = t2p_sample_rgba_to_rgb ( ( tdata_t ) buffer , t2p -> tiff_width * t2p -> tiff_length ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_RGBAA_TO_RGB ) { t2p -> tiff_datasize = t2p_sample_rgbaa_to_rgb ( ( tdata_t ) buffer , t2p -> tiff_width * t2p -> tiff_length ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_YCBCR_TO_RGB ) { samplebuffer = ( unsigned char * ) _TIFFrealloc ( ( tdata_t ) buffer , t2p -> tiff_width * t2p -> tiff_length * 4 ) ; if ( samplebuffer == NULL ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>%lu<S2SV_blank>bytes<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>t2p_readwrite_pdf_image,<S2SV_blank>%s\" , ( unsigned long ) t2p -> tiff_datasize , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; _TIFFfree ( buffer ) ; return ( 0 ) ; } else { buffer = samplebuffer ; } if ( ! TIFFReadRGBAImageOriented ( input , t2p -> tiff_width , t2p -> tiff_length , ( uint32 * ) buffer , ORIENTATION_TOPLEFT , 0 ) ) { TIFFError ( TIFF2PDF_MODULE , \"Can\\'t<S2SV_blank>use<S2SV_blank>TIFFReadRGBAImageOriented<S2SV_blank>to<S2SV_blank>extract<S2SV_blank>RGB<S2SV_blank>image<S2SV_blank>from<S2SV_blank>%s\" , TIFFFileName ( input ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } t2p -> tiff_datasize = t2p_sample_abgr_to_rgb ( ( tdata_t ) buffer , t2p -> tiff_width * t2p -> tiff_length ) ; } if ( t2p -> pdf_sample & T2P_SAMPLE_LAB_SIGNED_TO_UNSIGNED ) { t2p -> tiff_datasize = t2p_sample_lab_signed_to_unsigned ( ( tdata_t ) buffer , t2p -> tiff_width * t2p -> tiff_length ) ; } } dataready : t2p_disable ( output ) ; TIFFSetField ( output , TIFFTAG_PHOTOMETRIC , t2p -> tiff_photometric ) ; TIFFSetField ( output , TIFFTAG_BITSPERSAMPLE , t2p -> tiff_bitspersample ) ; TIFFSetField ( output , TIFFTAG_SAMPLESPERPIXEL , t2p -> tiff_samplesperpixel ) ; TIFFSetField ( output , TIFFTAG_IMAGEWIDTH , t2p -> tiff_width ) ; TIFFSetField ( output , TIFFTAG_IMAGELENGTH , t2p -> tiff_length ) ; TIFFSetField ( output , TIFFTAG_ROWSPERSTRIP , t2p -> tiff_length ) ; TIFFSetField ( output , TIFFTAG_PLANARCONFIG , PLANARCONFIG_CONTIG ) ; TIFFSetField ( output , TIFFTAG_FILLORDER , FILLORDER_MSB2LSB ) ; switch ( t2p -> pdf_compression ) { case T2P_COMPRESS_NONE : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_NONE ) ; break ; # ifdef CCITT_SUPPORT case T2P_COMPRESS_G4 : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_CCITTFAX4 ) ; break ; # endif # ifdef JPEG_SUPPORT case T2P_COMPRESS_JPEG : if ( t2p -> tiff_photometric == PHOTOMETRIC_YCBCR ) { uint16 hor = 0 , ver = 0 ; if ( TIFFGetField ( input , TIFFTAG_YCBCRSUBSAMPLING , & hor , & ver ) != 0 ) { if ( hor != 0 && ver != 0 ) { TIFFSetField ( output , TIFFTAG_YCBCRSUBSAMPLING , hor , ver ) ; } } if ( TIFFGetField ( input , TIFFTAG_REFERENCEBLACKWHITE , & xfloatp ) != 0 ) { TIFFSetField ( output , TIFFTAG_REFERENCEBLACKWHITE , xfloatp ) ; } } if ( TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_JPEG ) == 0 ) { TIFFError ( TIFF2PDF_MODULE , \"Unable<S2SV_blank>to<S2SV_blank>use<S2SV_blank>JPEG<S2SV_blank>compression<S2SV_blank>for<S2SV_blank>input<S2SV_blank>%s<S2SV_blank>and<S2SV_blank>output<S2SV_blank>%s\" , TIFFFileName ( input ) , TIFFFileName ( output ) ) ; _TIFFfree ( buffer ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } TIFFSetField ( output , TIFFTAG_JPEGTABLESMODE , 0 ) ; if ( t2p -> pdf_colorspace & ( T2P_CS_RGB | T2P_CS_LAB ) ) { TIFFSetField ( output , TIFFTAG_PHOTOMETRIC , PHOTOMETRIC_YCBCR ) ; if ( t2p -> tiff_photometric != PHOTOMETRIC_YCBCR ) { TIFFSetField ( output , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RGB ) ; } else { TIFFSetField ( output , TIFFTAG_JPEGCOLORMODE , JPEGCOLORMODE_RAW ) ; } } if ( t2p -> pdf_colorspace & T2P_CS_GRAY ) { ( void ) 0 ; } if ( t2p -> pdf_colorspace & T2P_CS_CMYK ) { ( void ) 0 ; } if ( t2p -> pdf_defaultcompressionquality != 0 ) { TIFFSetField ( output , TIFFTAG_JPEGQUALITY , t2p -> pdf_defaultcompressionquality ) ; } break ; # endif # ifdef ZIP_SUPPORT case T2P_COMPRESS_ZIP : TIFFSetField ( output , TIFFTAG_COMPRESSION , COMPRESSION_DEFLATE ) ; if ( t2p -> pdf_defaultcompressionquality % 100 != 0 ) { TIFFSetField ( output , TIFFTAG_PREDICTOR , t2p -> pdf_defaultcompressionquality % 100 ) ; } if ( t2p -> pdf_defaultcompressionquality / 100 != 0 ) { TIFFSetField ( output , TIFFTAG_ZIPQUALITY , ( t2p -> pdf_defaultcompressionquality / 100 ) ) ; } break ; # endif default : break ; } t2p_enable ( output ) ; t2p -> outputwritten = 0 ; # ifdef JPEG_SUPPORT if ( t2p -> pdf_compression == T2P_COMPRESS_JPEG && t2p -> tiff_photometric == PHOTOMETRIC_YCBCR ) { bufferoffset = TIFFWriteEncodedStrip ( output , ( tstrip_t ) 0 , buffer , stripsize * stripcount ) ; } else # endif { bufferoffset = TIFFWriteEncodedStrip ( output , ( tstrip_t ) 0 , buffer , t2p -> tiff_datasize ) ; } if ( buffer != NULL ) { _TIFFfree ( buffer ) ; buffer = NULL ; } if ( bufferoffset == ( tsize_t ) - 1 ) { TIFFError ( TIFF2PDF_MODULE , \"Error<S2SV_blank>writing<S2SV_blank>encoded<S2SV_blank>strip<S2SV_blank>to<S2SV_blank>output<S2SV_blank>PDF<S2SV_blank>%s\" , TIFFFileName ( output ) ) ; t2p -> t2p_error = T2P_ERR_ERROR ; return ( 0 ) ; } written = t2p -> outputwritten ; return ( written ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , buffer , t2p -> tiff_datasize ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6197\n\n```\nCWE-476 void formUpdateBuffer ( Anchor * a , Buffer * buf , FormItemList * form ) { Buffer save ; char * p ; int spos , epos , rows , c_rows , pos , col = 0 ; Line * l ; copyBuffer ( & save , buf ) ; gotoLine ( buf , a -> start . line ) ; switch ( form -> type ) { case FORM_TEXTAREA : case FORM_INPUT_TEXT : case FORM_INPUT_FILE : case FORM_INPUT_PASSWORD : case FORM_INPUT_CHECKBOX : case FORM_INPUT_RADIO : # ifdef MENU_SELECT case FORM_SELECT : # endif spos = a -> start . pos ; epos = a -> end . pos ; break ; default : spos = a -> start . pos + 1 ; epos = a -> end . pos - 1 ; } switch ( form -> type ) { case FORM_INPUT_CHECKBOX : case FORM_INPUT_RADIO : if ( buf -> currentLine == NULL || spos >= buf -> currentLine -> len || spos < 0 ) break ; if ( form -> checked ) buf -> currentLine -> lineBuf [ spos ] = '*' ; else buf -> currentLine -> lineBuf [ spos ] = '<S2SV_blank>' ; break ; case FORM_INPUT_TEXT : case FORM_INPUT_FILE : case FORM_INPUT_PASSWORD : case FORM_TEXTAREA : # ifdef MENU_SELECT case FORM_SELECT : if ( form -> type == FORM_SELECT ) { p = form -> label -> ptr ; updateSelectOption ( form , form -> select_option ) ; } else # endif { if ( ! form -> value ) break ; p = form -> value -> ptr ; } l = buf -> currentLine ; if ( ! l ) break ; if ( form -> type == FORM_TEXTAREA ) { int n = a -> y - buf -> currentLine -> linenumber ; if ( n > 0 ) for ( ; l && n ; l = l -> prev , n -- ) ; else if ( n < 0 ) for ( ; l && n ; l = l -> prev , n ++ ) ; if ( ! l ) break ; } rows = form -> rows ? form -> rows : 1 ; col = COLPOS ( l , a -> start . pos ) ; for ( c_rows = 0 ; c_rows < rows ; c_rows ++ , l = l -> next ) { <S2SV_StartBug> if ( rows > 1 ) { <S2SV_EndBug> pos = columnPos ( l , col ) ; a = retrieveAnchor ( buf -> formitem , l -> linenumber , pos ) ; if ( a == NULL ) break ; spos = a -> start . pos ; epos = a -> end . pos ; } if ( a -> start . line != a -> end . line || spos > epos || epos >= l -> len || spos < 0 || epos < 0 || COLPOS ( l , epos ) < col ) break ; pos = form_update_line ( l , & p , spos , epos , COLPOS ( l , epos ) - col , rows > 1 , form -> type == FORM_INPUT_PASSWORD ) ; if ( pos != epos ) { shiftAnchorPosition ( buf -> href , buf -> hmarklist , a -> start . line , spos , pos - epos ) ; shiftAnchorPosition ( buf -> name , buf -> hmarklist , a -> start . line , spos , pos - epos ) ; shiftAnchorPosition ( buf -> img , buf -> hmarklist , a -> start . line , spos , pos - epos ) ; shiftAnchorPosition ( buf -> formitem , buf -> hmarklist , a -> start . line , spos , pos - epos ) ; } } break ; } copyBuffer ( buf , & save ) ; arrangeLine ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( l == NULL ) break ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_txfm_probs ( VP9_COMMON * cm , vp9_writer * w ) { <S2SV_EndBug> vp9_write_literal ( w , MIN ( cm -> tx_mode , ALLOW_32X32 ) , 2 ) ; if ( cm -> tx_mode >= ALLOW_32X32 ) <S2SV_StartBug> vp9_write_bit ( w , cm -> tx_mode == TX_MODE_SELECT ) ; <S2SV_EndBug> if ( cm -> tx_mode == TX_MODE_SELECT ) { int i , j ; unsigned int ct_8x8p [ TX_SIZES - 3 ] [ 2 ] ; unsigned int ct_16x16p [ TX_SIZES - 2 ] [ 2 ] ; unsigned int ct_32x32p [ TX_SIZES - 1 ] [ 2 ] ; for ( i = 0 ; i < TX_SIZE_CONTEXTS ; i ++ ) { <S2SV_StartBug> tx_counts_to_branch_counts_8x8 ( cm -> counts . tx . p8x8 [ i ] , ct_8x8p ) ; <S2SV_EndBug> for ( j = 0 ; j < TX_SIZES - 3 ; j ++ ) <S2SV_StartBug> vp9_cond_prob_diff_update ( w , & cm -> fc . tx_probs . p8x8 [ i ] [ j ] , ct_8x8p [ j ] ) ; <S2SV_EndBug> } for ( i = 0 ; i < TX_SIZE_CONTEXTS ; i ++ ) { <S2SV_StartBug> tx_counts_to_branch_counts_16x16 ( cm -> counts . tx . p16x16 [ i ] , ct_16x16p ) ; <S2SV_EndBug> for ( j = 0 ; j < TX_SIZES - 2 ; j ++ ) <S2SV_StartBug> vp9_cond_prob_diff_update ( w , & cm -> fc . tx_probs . p16x16 [ i ] [ j ] , <S2SV_EndBug> ct_16x16p [ j ] ) ; } for ( i = 0 ; i < TX_SIZE_CONTEXTS ; i ++ ) { <S2SV_StartBug> tx_counts_to_branch_counts_32x32 ( cm -> counts . tx . p32x32 [ i ] , ct_32x32p ) ; <S2SV_EndBug> for ( j = 0 ; j < TX_SIZES - 1 ; j ++ ) <S2SV_StartBug> vp9_cond_prob_diff_update ( w , & cm -> fc . tx_probs . p32x32 [ i ] [ j ] , <S2SV_EndBug> ct_32x32p [ j ] ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cm , vpx_writer * w , FRAME_COUNTS * counts ) { vpx_write_literal <S2SV_ModEnd> ( w , <S2SV_ModStart> >= ALLOW_32X32 ) vpx_write_bit <S2SV_ModEnd> ( w , <S2SV_ModStart> { tx_counts_to_branch_counts_8x8 ( counts -> <S2SV_ModEnd> tx . p8x8 <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> tx_probs . p8x8 <S2SV_ModStart> { tx_counts_to_branch_counts_16x16 ( counts -> <S2SV_ModEnd> tx . p16x16 <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> tx_probs . p16x16 <S2SV_ModStart> { tx_counts_to_branch_counts_32x32 ( counts -> <S2SV_ModEnd> tx . p32x32 <S2SV_ModStart> cm -> fc -> <S2SV_ModEnd> tx_probs . p32x32\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6213\n\n```\nCWE-400 static int attach_recursive_mnt ( struct mount * source_mnt , struct mount * dest_mnt , struct mountpoint * dest_mp , struct path * parent_path ) { HLIST_HEAD ( tree_list ) ; <S2SV_StartBug> struct mount * child , * p ; <S2SV_EndBug> struct hlist_node * n ; int err ; <S2SV_StartBug> if ( IS_MNT_SHARED ( dest_mnt ) ) { <S2SV_EndBug> err = invent_group_ids ( source_mnt , true ) ; if ( err ) goto out ; <S2SV_StartBug> err = propagate_mnt ( dest_mnt , dest_mp , source_mnt , & tree_list ) ; <S2SV_EndBug> lock_mount_hash ( ) ; if ( err ) goto out_cleanup_ids ; for ( p = source_mnt ; p ; p = next_mnt ( p , source_mnt ) ) set_mnt_shared ( p ) ; } else { lock_mount_hash ( ) ; } if ( parent_path ) { detach_mnt ( source_mnt , parent_path ) ; attach_mnt ( source_mnt , dest_mnt , dest_mp ) ; touch_mnt_namespace ( source_mnt -> mnt_ns ) ; } else { mnt_set_mountpoint ( dest_mnt , dest_mp , source_mnt ) ; commit_tree ( source_mnt , NULL ) ; } hlist_for_each_entry_safe ( child , n , & tree_list , mnt_hash ) { struct mount * q ; hlist_del_init ( & child -> mnt_hash ) ; q = __lookup_mnt_last ( & child -> mnt_parent -> mnt , child -> mnt_mountpoint ) ; commit_tree ( child , q ) ; } unlock_mount_hash ( ) ; return 0 ; out_cleanup_ids : while ( ! hlist_empty ( & tree_list ) ) { child = hlist_entry ( tree_list . first , struct mount , mnt_hash ) ; <S2SV_StartBug> umount_tree ( child , UMOUNT_SYNC ) ; <S2SV_EndBug> } unlock_mount_hash ( ) ; cleanup_group_ids ( source_mnt , NULL ) ; out : <S2SV_StartBug> return err ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct mnt_namespace * ns = dest_mnt -> mnt_ns ; struct <S2SV_ModStart> ; if ( ! parent_path ) { err = count_mounts ( ns , source_mnt <S2SV_ModEnd> ) ; if <S2SV_ModStart> goto out ; } if ( IS_MNT_SHARED ( dest_mnt ) ) { err = invent_group_ids ( source_mnt , true ) ; if ( err ) goto out ; <S2SV_ModStart> mnt_hash ) ; child -> mnt_parent -> mnt_ns -> pending_mounts = 0 ; <S2SV_ModStart> ; out : ns -> pending_mounts = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9806\n\n```\nCWE-362 static int netlink_dump ( struct sock * sk ) { struct netlink_sock * nlk = nlk_sk ( sk ) ; struct netlink_callback * cb ; struct sk_buff * skb = NULL ; struct nlmsghdr * nlh ; <S2SV_StartBug> int len , err = - ENOBUFS ; <S2SV_EndBug> int alloc_min_size ; int alloc_size ; mutex_lock ( nlk -> cb_mutex ) ; if ( ! nlk -> cb_running ) { err = - EINVAL ; goto errout_skb ; } if ( atomic_read ( & sk -> sk_rmem_alloc ) >= sk -> sk_rcvbuf ) goto errout_skb ; cb = & nlk -> cb ; alloc_min_size = max_t ( int , cb -> min_dump_alloc , NLMSG_GOODSIZE ) ; if ( alloc_min_size < nlk -> max_recvmsg_len ) { alloc_size = nlk -> max_recvmsg_len ; skb = alloc_skb ( alloc_size , GFP_KERNEL | __GFP_NOWARN | __GFP_NORETRY ) ; } if ( ! skb ) { alloc_size = alloc_min_size ; skb = alloc_skb ( alloc_size , GFP_KERNEL ) ; } if ( ! skb ) goto errout_skb ; skb_reserve ( skb , skb_tailroom ( skb ) - alloc_size ) ; netlink_skb_set_owner_r ( skb , sk ) ; len = cb -> dump ( skb , cb ) ; if ( len > 0 ) { mutex_unlock ( nlk -> cb_mutex ) ; if ( sk_filter ( sk , skb ) ) kfree_skb ( skb ) ; else __netlink_sendskb ( sk , skb ) ; return 0 ; } nlh = nlmsg_put_answer ( skb , cb , NLMSG_DONE , sizeof ( len ) , NLM_F_MULTI ) ; if ( ! nlh ) goto errout_skb ; nl_dump_check_consistent ( cb , nlh ) ; memcpy ( nlmsg_data ( nlh ) , & len , sizeof ( len ) ) ; if ( sk_filter ( sk , skb ) ) kfree_skb ( skb ) ; else __netlink_sendskb ( sk , skb ) ; if ( cb -> done ) cb -> done ( cb ) ; nlk -> cb_running = false ; <S2SV_StartBug> mutex_unlock ( nlk -> cb_mutex ) ; <S2SV_EndBug> <S2SV_StartBug> module_put ( cb -> module ) ; <S2SV_EndBug> <S2SV_StartBug> consume_skb ( cb -> skb ) ; <S2SV_EndBug> return 0 ; errout_skb : mutex_unlock ( nlk -> cb_mutex ) ; kfree_skb ( skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * nlh ; struct module * module ; <S2SV_ModStart> = false ; module = cb -> module ; skb = cb -> skb ; <S2SV_ModStart> ; module_put ( <S2SV_ModEnd> module ) ; <S2SV_ModStart> ; consume_skb ( <S2SV_ModEnd> skb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9391\n\n```\nCWE-000 long jpc_bitstream_getbits ( jpc_bitstream_t * bitstream , int n ) { long v ; int u ; <S2SV_StartBug> assert ( n >= 0 && n < 32 ) ; <S2SV_EndBug> v = 0 ; while ( -- n >= 0 ) { if ( ( u = jpc_bitstream_getbit ( bitstream ) ) < 0 ) { return - 1 ; } v = ( v << 1 ) | u ; } return v ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int u ; if ( n < 0 || n >= 32 ) { return - 1 ; } <S2SV_ModEnd> v = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8631\n\n```\nCWE-772 generic_ret * chpass_principal_2_svc ( chpass_arg * arg , struct svc_req * rqstp ) { static generic_ret ret ; char * prime_arg ; <S2SV_StartBug> gss_buffer_desc client_name , <S2SV_EndBug> service_name ; OM_uint32 minor_stat ; kadm5_server_handle_t handle ; const char * errmsg = NULL ; xdr_free ( xdr_generic_ret , & ret ) ; if ( ( ret . code = new_server_handle ( arg -> api_version , rqstp , & handle ) ) ) goto exit_func ; if ( ( ret . code = check_handle ( ( void * ) handle ) ) ) goto exit_func ; ret . api_version = handle -> api_version ; if ( setup_gss_names ( rqstp , & client_name , & service_name ) < 0 ) { ret . code = KADM5_FAILURE ; goto exit_func ; } if ( krb5_unparse_name ( handle -> context , arg -> princ , & prime_arg ) ) { ret . code = KADM5_BAD_PRINCIPAL ; goto exit_func ; } if ( cmp_gss_krb5_name ( handle , rqst2name ( rqstp ) , arg -> princ ) ) { ret . code = chpass_principal_wrapper_3 ( ( void * ) handle , arg -> princ , FALSE , 0 , NULL , arg -> pass ) ; } else if ( ! ( CHANGEPW_SERVICE ( rqstp ) ) && kadm5int_acl_check ( handle -> context , rqst2name ( rqstp ) , ACL_CHANGEPW , arg -> princ , NULL ) ) { ret . code = kadm5_chpass_principal ( ( void * ) handle , arg -> princ , arg -> pass ) ; } else { log_unauth ( \"kadm5_chpass_principal\" , prime_arg , & client_name , & service_name , rqstp ) ; ret . code = KADM5_AUTH_CHANGEPW ; } if ( ret . code != KADM5_AUTH_CHANGEPW ) { if ( ret . code != 0 ) errmsg = krb5_get_error_message ( handle -> context , ret . code ) ; log_done ( \"kadm5_chpass_principal\" , prime_arg , errmsg , & client_name , & service_name , rqstp ) ; if ( errmsg != NULL ) krb5_free_error_message ( handle -> context , errmsg ) ; } free ( prime_arg ) ; <S2SV_StartBug> gss_release_buffer ( & minor_stat , & client_name ) ; <S2SV_EndBug> gss_release_buffer ( & minor_stat , & service_name ) ; exit_func : free_server_handle ( handle ) ; return & ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; gss_buffer_desc client_name = GSS_C_EMPTY_BUFFER ; gss_buffer_desc service_name = GSS_C_EMPTY_BUFFER <S2SV_ModEnd> ; OM_uint32 minor_stat <S2SV_ModStart> prime_arg ) ; exit_func : gss_release_buffer ( & minor_stat , & client_name ) ; gss_release_buffer ( & minor_stat , & service_name ) ; <S2SV_ModEnd> free_server_handle ( handle\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-6927\n\n```\nCWE-190 static int futex_requeue ( u32 __user * uaddr1 , unsigned int flags , u32 __user * uaddr2 , int nr_wake , int nr_requeue , u32 * cmpval , int requeue_pi ) { union futex_key key1 = FUTEX_KEY_INIT , key2 = FUTEX_KEY_INIT ; int drop_count = 0 , task_count = 0 , ret ; struct futex_pi_state * pi_state = NULL ; struct futex_hash_bucket * hb1 , * hb2 ; struct futex_q * this , * next ; <S2SV_StartBug> DEFINE_WAKE_Q ( wake_q ) ; <S2SV_EndBug> if ( ! IS_ENABLED ( CONFIG_FUTEX_PI ) && requeue_pi ) return - ENOSYS ; if ( requeue_pi ) { if ( uaddr1 == uaddr2 ) return - EINVAL ; if ( refill_pi_state_cache ( ) ) return - ENOMEM ; if ( nr_wake != 1 ) return - EINVAL ; } retry : ret = get_futex_key ( uaddr1 , flags & FLAGS_SHARED , & key1 , VERIFY_READ ) ; if ( unlikely ( ret != 0 ) ) goto out ; ret = get_futex_key ( uaddr2 , flags & FLAGS_SHARED , & key2 , requeue_pi ? VERIFY_WRITE : VERIFY_READ ) ; if ( unlikely ( ret != 0 ) ) goto out_put_key1 ; if ( requeue_pi && match_futex ( & key1 , & key2 ) ) { ret = - EINVAL ; goto out_put_keys ; } hb1 = hash_futex ( & key1 ) ; hb2 = hash_futex ( & key2 ) ; retry_private : hb_waiters_inc ( hb2 ) ; double_lock_hb ( hb1 , hb2 ) ; if ( likely ( cmpval != NULL ) ) { u32 curval ; ret = get_futex_value_locked ( & curval , uaddr1 ) ; if ( unlikely ( ret ) ) { double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; ret = get_user ( curval , uaddr1 ) ; if ( ret ) goto out_put_keys ; if ( ! ( flags & FLAGS_SHARED ) ) goto retry_private ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; goto retry ; } if ( curval != * cmpval ) { ret = - EAGAIN ; goto out_unlock ; } } if ( requeue_pi && ( task_count - nr_wake < nr_requeue ) ) { ret = futex_proxy_trylock_atomic ( uaddr2 , hb1 , hb2 , & key1 , & key2 , & pi_state , nr_requeue ) ; if ( ret > 0 ) { WARN_ON ( pi_state ) ; drop_count ++ ; task_count ++ ; ret = lookup_pi_state ( uaddr2 , ret , hb2 , & key2 , & pi_state ) ; } switch ( ret ) { case 0 : break ; case - EFAULT : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; ret = fault_in_user_writeable ( uaddr2 ) ; if ( ! ret ) goto retry ; goto out ; case - EAGAIN : double_unlock_hb ( hb1 , hb2 ) ; hb_waiters_dec ( hb2 ) ; put_futex_key ( & key2 ) ; put_futex_key ( & key1 ) ; cond_resched ( ) ; goto retry ; default : goto out_unlock ; } } plist_for_each_entry_safe ( this , next , & hb1 -> chain , list ) { if ( task_count - nr_wake >= nr_requeue ) break ; if ( ! match_futex ( & this -> key , & key1 ) ) continue ; if ( ( requeue_pi && ! this -> rt_waiter ) || ( ! requeue_pi && this -> rt_waiter ) || this -> pi_state ) { ret = - EINVAL ; break ; } if ( ++ task_count <= nr_wake && ! requeue_pi ) { mark_wake_futex ( & wake_q , this ) ; continue ; } if ( requeue_pi && ! match_futex ( this -> requeue_pi_key , & key2 ) ) { ret = - EINVAL ; break ; } if ( requeue_pi ) { get_pi_state ( pi_state ) ; this -> pi_state = pi_state ; ret = rt_mutex_start_proxy_lock ( & pi_state -> pi_mutex , this -> rt_waiter , this -> task ) ; if ( ret == 1 ) { requeue_pi_wake_futex ( this , & key2 , hb2 ) ; drop_count ++ ; continue ; } else if ( ret ) { this -> pi_state = NULL ; put_pi_state ( pi_state ) ; break ; } } requeue_futex ( this , hb1 , hb2 , & key2 ) ; drop_count ++ ; } put_pi_state ( pi_state ) ; out_unlock : double_unlock_hb ( hb1 , hb2 ) ; wake_up_q ( & wake_q ) ; hb_waiters_dec ( hb2 ) ; while ( -- drop_count >= 0 ) drop_futex_key_refs ( & key1 ) ; out_put_keys : put_futex_key ( & key2 ) ; out_put_key1 : put_futex_key ( & key1 ) ; out : return ret ? ret : task_count ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( wake_q ) ; if ( nr_wake < 0 || nr_requeue < 0 ) return - EINVAL\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3571\n\n```\nCWE-000 int dtls1_get_record ( SSL * s ) { int ssl_major , ssl_minor ; int i , n ; SSL3_RECORD * rr ; unsigned char * p = NULL ; unsigned short version ; DTLS1_BITMAP * bitmap ; unsigned int is_next_epoch ; rr = & ( s -> s3 -> rrec ) ; dtls1_process_buffered_records ( s ) ; if ( dtls1_get_processed_record ( s ) ) return 1 ; again : if ( ( s -> rstate != SSL_ST_READ_BODY ) || ( s -> packet_length < DTLS1_RT_HEADER_LENGTH ) ) { n = ssl3_read_n ( s , DTLS1_RT_HEADER_LENGTH , s -> s3 -> rbuf . len , 0 ) ; if ( n <= 0 ) return ( n ) ; if ( s -> packet_length != DTLS1_RT_HEADER_LENGTH ) { s -> packet_length = 0 ; goto again ; } s -> rstate = SSL_ST_READ_BODY ; p = s -> packet ; if ( s -> msg_callback ) s -> msg_callback ( 0 , 0 , SSL3_RT_HEADER , p , DTLS1_RT_HEADER_LENGTH , s , s -> msg_callback_arg ) ; rr -> type = * ( p ++ ) ; ssl_major = * ( p ++ ) ; ssl_minor = * ( p ++ ) ; version = ( ssl_major << 8 ) | ssl_minor ; n2s ( p , rr -> epoch ) ; memcpy ( & ( s -> s3 -> read_sequence [ 2 ] ) , p , 6 ) ; p += 6 ; n2s ( p , rr -> length ) ; if ( ! s -> first_packet ) { if ( version != s -> version ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( ( version & 0xff00 ) != ( s -> version & 0xff00 ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( rr -> length > SSL3_RT_MAX_ENCRYPTED_LENGTH ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } if ( rr -> length > s -> packet_length - DTLS1_RT_HEADER_LENGTH ) { i = rr -> length ; n = ssl3_read_n ( s , i , i , 1 ) ; <S2SV_StartBug> if ( n <= 0 ) return ( n ) ; <S2SV_EndBug> if ( n != i ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } } s -> rstate = SSL_ST_READ_HEADER ; bitmap = dtls1_get_bitmap ( s , rr , & is_next_epoch ) ; if ( bitmap == NULL ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP if ( ! BIO_dgram_is_sctp ( SSL_get_rbio ( s ) ) ) { # endif if ( ! ( s -> d1 -> listen && rr -> type == SSL3_RT_HANDSHAKE && * p == SSL3_MT_CLIENT_HELLO ) && ! dtls1_record_replay_check ( s , bitmap ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } # ifndef OPENSSL_NO_SCTP } # endif if ( rr -> length == 0 ) goto again ; if ( is_next_epoch ) { if ( ( SSL_in_init ( s ) || s -> in_handshake ) && ! s -> d1 -> listen ) { dtls1_buffer_record ( s , & ( s -> d1 -> unprocessed_rcds ) , rr -> seq_num ) ; } rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } if ( ! dtls1_process_record ( s ) ) { rr -> length = 0 ; s -> packet_length = 0 ; goto again ; } return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( n <S2SV_ModEnd> != i )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4502\n\n```\nCWE-119 bool initiate_stratum ( struct pool * pool ) { char s [ RBUFSIZE ] , * sret = NULL , * nonce1 , * sessionid ; json_t * val = NULL , * res_val , * err_val ; bool ret = false , recvd = false ; json_error_t err ; int n2size ; if ( ! setup_stratum_curl ( pool ) ) goto out ; resend : if ( pool -> sessionid ) sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[\\\\\"%s\\\\\"]}\" , swork_id ++ , pool -> sessionid ) ; else sprintf ( s , \"{\\\\\"id\\\\\":<S2SV_blank>%d,<S2SV_blank>\\\\\"method\\\\\":<S2SV_blank>\\\\\"mining.subscribe\\\\\",<S2SV_blank>\\\\\"params\\\\\":<S2SV_blank>[]}\" , swork_id ++ ) ; if ( ! __stratum_send ( pool , s , strlen ( s ) ) ) { applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>send<S2SV_blank>s<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } if ( ! socket_full ( pool , true ) ) { applog ( LOG_DEBUG , \"Timed<S2SV_blank>out<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>response<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } sret = recv_line ( pool ) ; if ( ! sret ) goto out ; recvd = true ; val = JSON_LOADS ( sret , & err ) ; free ( sret ) ; if ( ! val ) { applog ( LOG_INFO , \"JSON<S2SV_blank>decode<S2SV_blank>failed(%d):<S2SV_blank>%s\" , err . line , err . text ) ; goto out ; } res_val = json_object_get ( val , \"result\" ) ; err_val = json_object_get ( val , \"error\" ) ; if ( ! res_val || json_is_null ( res_val ) || ( err_val && ! json_is_null ( err_val ) ) ) { char * ss ; if ( err_val ) ss = json_dumps ( err_val , JSON_INDENT ( 3 ) ) ; else ss = strdup ( \"(unknown<S2SV_blank>reason)\" ) ; applog ( LOG_INFO , \"JSON-RPC<S2SV_blank>decode<S2SV_blank>failed:<S2SV_blank>%s\" , ss ) ; free ( ss ) ; goto out ; } sessionid = json_array_string ( json_array_get ( res_val , 0 ) , 1 ) ; if ( ! sessionid ) { applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>sessionid<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; goto out ; } nonce1 = json_array_string ( res_val , 1 ) ; if ( ! nonce1 ) { applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>nonce1<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; free ( sessionid ) ; goto out ; } n2size = json_integer_value ( json_array_get ( res_val , 2 ) ) ; <S2SV_StartBug> if ( ! n2size ) { <S2SV_EndBug> applog ( LOG_INFO , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>n2size<S2SV_blank>in<S2SV_blank>initiate_stratum\" ) ; free ( sessionid ) ; free ( nonce1 ) ; goto out ; } mutex_lock ( & pool -> pool_lock ) ; pool -> sessionid = sessionid ; free ( pool -> nonce1 ) ; pool -> nonce1 = nonce1 ; pool -> n1_len = strlen ( nonce1 ) / 2 ; pool -> n2size = n2size ; mutex_unlock ( & pool -> pool_lock ) ; applog ( LOG_DEBUG , \"Pool<S2SV_blank>%d<S2SV_blank>stratum<S2SV_blank>session<S2SV_blank>id:<S2SV_blank>%s\" , pool -> pool_no , pool -> sessionid ) ; ret = true ; out : if ( val ) json_decref ( val ) ; if ( ret ) { if ( ! pool -> stratum_url ) pool -> stratum_url = pool -> sockaddr_url ; pool -> stratum_active = true ; pool -> swork . diff = 1 ; if ( opt_protocol ) { applog ( LOG_DEBUG , \"Pool<S2SV_blank>%d<S2SV_blank>confirmed<S2SV_blank>mining.subscribe<S2SV_blank>with<S2SV_blank>extranonce1<S2SV_blank>%s<S2SV_blank>extran2size<S2SV_blank>%d\" , pool -> pool_no , pool -> nonce1 , pool -> n2size ) ; } } else { if ( recvd && pool -> sessionid ) { mutex_lock ( & pool -> pool_lock ) ; free ( pool -> sessionid ) ; free ( pool -> nonce1 ) ; pool -> sessionid = pool -> nonce1 = NULL ; mutex_unlock ( & pool -> pool_lock ) ; applog ( LOG_DEBUG , \"Failed<S2SV_blank>to<S2SV_blank>resume<S2SV_blank>stratum,<S2SV_blank>trying<S2SV_blank>afresh\" ) ; goto resend ; } applog ( LOG_DEBUG , \"Initiate<S2SV_blank>stratum<S2SV_blank>failed\" ) ; if ( pool -> sock != INVSOCK ) { shutdown ( pool -> sock , SHUT_RDWR ) ; pool -> sock = INVSOCK ; } } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( n2size < 1 ) <S2SV_ModEnd> { applog (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14495\n\n```\nCWE-787 void * adminchild ( struct clientparam * param ) { int i , res ; char * buf ; char username [ 256 ] ; char * sb ; char * req = NULL ; struct printparam pp ; <S2SV_StartBug> int contentlen = 0 ; <S2SV_EndBug> int isform = 0 ; pp . inbuf = 0 ; pp . cp = param ; buf = myalloc ( LINESIZE ) ; if ( ! buf ) { RETURN ( 555 ) ; } i = sockgetlinebuf ( param , CLIENT , ( unsigned char * ) buf , LINESIZE - 1 , '\\\\n' , conf . timeouts [ STRING_S ] ) ; if ( i < 5 || ( ( buf [ 0 ] != 'G' || buf [ 1 ] != 'E' || buf [ 2 ] != 'T' || buf [ 3 ] != '<S2SV_blank>' || buf [ 4 ] != '/' ) && ( buf [ 0 ] != 'P' || buf [ 1 ] != 'O' || buf [ 2 ] != 'S' || buf [ 3 ] != 'T' || buf [ 4 ] != '<S2SV_blank>' || buf [ 5 ] != '/' ) ) ) { RETURN ( 701 ) ; } buf [ i ] = 0 ; sb = strchr ( buf + 5 , '<S2SV_blank>' ) ; if ( ! sb ) { RETURN ( 702 ) ; } * sb = 0 ; req = mystrdup ( buf + ( ( * buf == 'P' ) ? 6 : 5 ) ) ; while ( ( i = sockgetlinebuf ( param , CLIENT , ( unsigned char * ) buf , LINESIZE - 1 , '\\\\n' , conf . timeouts [ STRING_S ] ) ) > 2 ) { buf [ i ] = 0 ; if ( i > 19 && ( ! strncasecmp ( buf , \"authorization\" , 13 ) ) ) { sb = strchr ( buf , ':' ) ; if ( ! sb ) continue ; ++ sb ; while ( isspace ( * sb ) ) sb ++ ; if ( ! * sb || strncasecmp ( sb , \"basic\" , 5 ) ) { continue ; } sb += 5 ; while ( isspace ( * sb ) ) sb ++ ; i = de64 ( ( unsigned char * ) sb , ( unsigned char * ) username , 255 ) ; if ( i <= 0 ) continue ; username [ i ] = 0 ; sb = strchr ( ( char * ) username , ':' ) ; if ( sb ) { * sb = 0 ; if ( param -> password ) myfree ( param -> password ) ; param -> password = ( unsigned char * ) mystrdup ( sb + 1 ) ; } if ( param -> username ) myfree ( param -> username ) ; param -> username = ( unsigned char * ) mystrdup ( username ) ; continue ; } else if ( i > 15 && ( ! strncasecmp ( buf , \"content-length:\" , 15 ) ) ) { sb = buf + 15 ; while ( isspace ( * sb ) ) sb ++ ; <S2SV_StartBug> contentlen = atoi ( sb ) ; <S2SV_EndBug> } else if ( i > 13 && ( ! strncasecmp ( buf , \"content-type:\" , 13 ) ) ) { sb = buf + 13 ; while ( isspace ( * sb ) ) sb ++ ; if ( ! strncasecmp ( sb , \"x-www-form-urlencoded\" , 21 ) ) isform = 1 ; } } param -> operation = ADMIN ; if ( isform && contentlen ) { printstr ( & pp , \"HTTP/1.0<S2SV_blank>100<S2SV_blank>Continue\\\\r\\\\n\\\\r\\\\n\" ) ; stdpr ( & pp , NULL , 0 ) ; } res = ( * param -> srv -> authfunc ) ( param ) ; if ( res && res != 10 ) { printstr ( & pp , authreq ) ; RETURN ( res ) ; } if ( param -> srv -> singlepacket || param -> redirected ) { if ( * req == 'C' ) req [ 1 ] = 0 ; else * req = 0 ; } sprintf ( buf , ok , conf . stringtable ? ( char * ) conf . stringtable [ 2 ] : \"3proxy\" , conf . stringtable ? ( char * ) conf . stringtable [ 2 ] : \"3[APA3A]<S2SV_blank>tiny<S2SV_blank>proxy\" , conf . stringtable ? ( char * ) conf . stringtable [ 3 ] : \"\" ) ; if ( * req != 'S' ) printstr ( & pp , buf ) ; switch ( * req ) { case 'C' : printstr ( & pp , counters ) ; { struct trafcount * cp ; int num = 0 ; for ( cp = conf . trafcounter ; cp ; cp = cp -> next , num ++ ) { int inbuf = 0 ; if ( cp -> ace && ( param -> srv -> singlepacket || param -> redirected ) ) { if ( ! ACLmatches ( cp -> ace , param ) ) continue ; } if ( req [ 1 ] == 'S' && atoi ( req + 2 ) == num ) cp -> disabled = 0 ; if ( req [ 1 ] == 'D' && atoi ( req + 2 ) == num ) cp -> disabled = 1 ; inbuf += sprintf ( buf , \"<tr>\" \"<td>%s</td><td><A<S2SV_blank>HREF=\\\\\\'/C%c%d\\\\\\'>%s</A></td><td>\" , ( cp -> comment ) ? cp -> comment : \"&nbsp;\" , ( cp -> disabled ) ? 'S' : 'D' , num , ( cp -> disabled ) ? \"NO\" : \"YES\" ) ; if ( ! cp -> ace || ! cp -> ace -> users ) { inbuf += sprintf ( buf + inbuf , \"<center>ANY</center>\" ) ; } else { inbuf += printuserlist ( buf + inbuf , LINESIZE - 800 , cp -> ace -> users , \",<br<S2SV_blank>/>\\\\r\\\\n\" ) ; } inbuf += sprintf ( buf + inbuf , \"</td><td>\" ) ; if ( ! cp -> ace || ! cp -> ace -> src ) { inbuf += sprintf ( buf + inbuf , \"<center>ANY</center>\" ) ; } else { inbuf += printiplist ( buf + inbuf , LINESIZE - 512 , cp -> ace -> src , \",<br<S2SV_blank>/>\\\\r\\\\n\" ) ; } inbuf += sprintf ( buf + inbuf , \"</td><td>\" ) ; if ( ! cp -> ace || ! cp -> ace -> dst ) { inbuf += sprintf ( buf + inbuf , \"<center>ANY</center>\" ) ; } else { inbuf += printiplist ( buf + inbuf , LINESIZE - 512 , cp -> ace -> dst , \",<br<S2SV_blank>/>\\\\r\\\\n\" ) ; } inbuf += sprintf ( buf + inbuf , \"</td><td>\" ) ; if ( ! cp -> ace || ! cp -> ace -> ports ) { inbuf += sprintf ( buf + inbuf , \"<center>ANY</center>\" ) ; } else { inbuf += printportlist ( buf + inbuf , LINESIZE - 128 , cp -> ace -> ports , \",<br<S2SV_blank>/>\\\\r\\\\n\" ) ; } if ( cp -> type == NONE ) { inbuf += sprintf ( buf + inbuf , \"</td><td<S2SV_blank>colspan=\\\\\\'6\\\\\\'<S2SV_blank>align=\\\\\\'center\\\\\\'>exclude<S2SV_blank>from<S2SV_blank>limitation</td></tr>\\\\r\\\\n\" ) ; } else { inbuf += sprintf ( buf + inbuf , \"</td><td>%\" PRINTF_INT64_MODIFIER \"u</td>\" \"<td>MB%s</td>\" \"<td>%\" PRINTF_INT64_MODIFIER \"u</td>\" \"<td>%s</td>\" , cp -> traflim64 / ( 1024 * 1024 ) , rotations [ cp -> type ] , cp -> traf64 , cp -> cleared ? ctime ( & cp -> cleared ) : \"never\" ) ; inbuf += sprintf ( buf + inbuf , \"<td>%s</td>\" \"<td>%i</td>\" \"</tr>\\\\r\\\\n\" , cp -> updated ? ctime ( & cp -> updated ) : \"never\" , cp -> number ) ; } printstr ( & pp , buf ) ; } } printstr ( & pp , counterstail ) ; break ; case 'R' : conf . needreload = 1 ; printstr ( & pp , \"<h3>Reload<S2SV_blank>scheduled</h3>\" ) ; break ; case 'S' : { if ( req [ 1 ] == 'X' ) { printstr ( & pp , style ) ; break ; } printstr ( & pp , xml ) ; printval ( conf . services , TYPE_SERVER , 0 , & pp ) ; printstr ( & pp , postxml ) ; } break ; case 'F' : { FILE * fp ; char buf [ 256 ] ; fp = confopen ( ) ; if ( ! fp ) { printstr ( & pp , \"<h3><font<S2SV_blank>color=\\\\\"red\\\\\">Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>config<S2SV_blank>file</font></h3>\" ) ; break ; } printstr ( & pp , \"<h3>Please<S2SV_blank>be<S2SV_blank>careful<S2SV_blank>editing<S2SV_blank>config<S2SV_blank>file<S2SV_blank>remotely</h3>\" ) ; <S2SV_StartBug> printstr ( & pp , \"<form<S2SV_blank>method=\\\\\"POST\\\\\"<S2SV_blank>action=\\\\\"/U\\\\\"><textarea<S2SV_blank>cols=\\\\\"80\\\\\"<S2SV_blank>rows=\\\\\"30\\\\\"<S2SV_blank>name=\\\\\"conffile\\\\\">\" ) ; <S2SV_EndBug> while ( fgets ( buf , 256 , fp ) ) { printstr ( & pp , buf ) ; } if ( ! writable ) fclose ( fp ) ; printstr ( & pp , \"</textarea><br><input<S2SV_blank>type=\\\\\"Submit\\\\\"></form>\" ) ; break ; } case 'U' : { <S2SV_StartBug> int l = 0 ; <S2SV_EndBug> int error = 0 ; <S2SV_StartBug> if ( ! writable || fseek ( writable , 0 , 0 ) ) { <S2SV_EndBug> error = 1 ; } <S2SV_StartBug> while ( ( i = sockgetlinebuf ( param , CLIENT , ( unsigned char * ) buf , LINESIZE - 1 , '+' , conf . timeouts [ STRING_S ] ) ) > 0 ) { <S2SV_EndBug> if ( i > ( contentlen - l ) ) i = ( contentlen - l ) ; <S2SV_StartBug> buf [ i ] = 0 ; <S2SV_EndBug> if ( ! l ) { if ( strncasecmp ( buf , \"conffile=\" , 9 ) ) error = 1 ; } <S2SV_StartBug> if ( ! error ) { <S2SV_EndBug> decodeurl ( ( unsigned char * ) buf , 1 ) ; fprintf ( writable , \"%s\" , l ? buf : buf + 9 ) ; } <S2SV_StartBug> l += i ; <S2SV_EndBug> if ( l >= contentlen ) break ; } if ( writable && ! error ) { fflush ( writable ) ; # ifndef _WINCE ftruncate ( fileno ( writable ) , ftell ( writable ) ) ; # endif } printstr ( & pp , error ? \"<h3><font<S2SV_blank>color=\\\\\"red\\\\\">Config<S2SV_blank>file<S2SV_blank>is<S2SV_blank>not<S2SV_blank>writable</font></h3>Make<S2SV_blank>sure<S2SV_blank>you<S2SV_blank>have<S2SV_blank>\\\\\"writable\\\\\"<S2SV_blank>command<S2SV_blank>in<S2SV_blank>configuration<S2SV_blank>file\" : \"<h3>Configuration<S2SV_blank>updated</h3>\" ) ; } break ; default : printstr ( & pp , ( char * ) conf . stringtable [ WEBBANNERS ] ) ; break ; } if ( * req != 'S' ) printstr ( & pp , tail ) ; CLEANRET : printstr ( & pp , NULL ) ; if ( buf ) myfree ( buf ) ; ( * param -> srv -> logfunc ) ( param , ( unsigned char * ) req ) ; if ( req ) myfree ( req ) ; freeparam ( param ) ; return ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> printparam pp ; unsigned <S2SV_ModEnd> contentlen = 0 <S2SV_ModStart> sb ++ ; sscanf ( sb , \"%u\" , & contentlen ) ; if ( contentlen > LINESIZE * 1024 ) contentlen = 0 <S2SV_ModEnd> ; } else <S2SV_ModStart> & pp , \"<form<S2SV_blank>method=\\\\\"POST\\\\\"<S2SV_blank>action=\\\\\"/U\\\\\"<S2SV_blank>enctype=\\\\\"application/x-www-form-urlencoded\\\\\"><textarea<S2SV_blank>cols=\\\\\"80\\\\\"<S2SV_blank>rows=\\\\\"30\\\\\"<S2SV_blank>name=\\\\\"conffile\\\\\">\" <S2SV_ModEnd> ) ; while <S2SV_ModStart> 'U' : { unsigned <S2SV_ModEnd> l = 0 <S2SV_ModStart> ! writable || ! contentlen || <S2SV_ModStart> } while ( l < contentlen && <S2SV_ModStart> ) buf , ( contentlen - l ) > <S2SV_ModStart> LINESIZE - 1 ? LINESIZE - 1 : contentlen - l <S2SV_ModStart> l ) ; if ( ! l ) { if ( i < 9 || <S2SV_ModEnd> strncasecmp ( buf <S2SV_ModStart> error ) { buf [ i ] = 0 ; <S2SV_ModStart> l += i <S2SV_ModEnd> ; } if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-354(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18672\n\n```\nCWE-354 void recovery_cipher_init ( bool passphrase_protection , bool pin_protection , const char * language , const char * label , bool _enforce_wordlist , uint32_t _auto_lock_delay_ms , uint32_t _u2f_counter , bool _dry_run ) { enforce_wordlist = _enforce_wordlist ; dry_run = _dry_run ; if ( ! dry_run ) { if ( pin_protection ) { if ( ! change_pin ( ) ) { recovery_abort ( ) ; fsm_sendFailure ( FailureType_Failure_ActionCancelled , \"PINs<S2SV_blank>do<S2SV_blank>not<S2SV_blank>match\" ) ; layoutHome ( ) ; return ; } } else { storage_setPin ( \"\" ) ; } storage_setPassphraseProtected ( passphrase_protection ) ; storage_setLanguage ( language ) ; storage_setLabel ( label ) ; storage_setAutoLockDelayMs ( _auto_lock_delay_ms ) ; storage_setU2FCounter ( _u2f_counter ) ; } else if ( ! pin_protect ( \"Enter<S2SV_blank>Your<S2SV_blank>PIN\" ) ) { layoutHome ( ) ; return ; } if ( ! confirm ( ButtonRequestType_ButtonRequest_Other , dry_run ? \"Recovery<S2SV_blank>Dry<S2SV_blank>Run\" : \"Recovery\" , \"When<S2SV_blank>entering<S2SV_blank>your<S2SV_blank>recovery<S2SV_blank>seed,<S2SV_blank>use<S2SV_blank>the<S2SV_blank>substitution<S2SV_blank>cipher<S2SV_blank>\" \"and<S2SV_blank>check<S2SV_blank>that<S2SV_blank>each<S2SV_blank>word<S2SV_blank>shows<S2SV_blank>up<S2SV_blank>correctly<S2SV_blank>on<S2SV_blank>the<S2SV_blank>screen.\" ) ) { fsm_sendFailure ( FailureType_Failure_ActionCancelled , \"Recovery<S2SV_blank>cancelled\" ) ; if ( ! dry_run ) storage_reset ( ) ; layoutHome ( ) ; return ; } memset ( mnemonic , 0 , sizeof ( mnemonic ) / sizeof ( char ) ) ; awaiting_character = true ; <S2SV_StartBug> next_character ( ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = true ; recovery_started = true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7277\n\n```\nCWE-125 void skb_complete_tx_timestamp ( struct sk_buff * skb , struct skb_shared_hwtstamps * hwtstamps ) { struct sock * sk = skb -> sk ; if ( ! skb_may_tx_timestamp ( sk , false ) ) return ; if ( likely ( atomic_inc_not_zero ( & sk -> sk_refcnt ) ) ) { * skb_hwtstamps ( skb ) = * hwtstamps ; <S2SV_StartBug> __skb_complete_tx_timestamp ( skb , sk , SCM_TSTAMP_SND ) ; <S2SV_EndBug> sock_put ( sk ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk , SCM_TSTAMP_SND , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2121\n\n```\nCWE-264 static int kvm_iommu_unmap_memslots ( struct kvm * kvm ) { int idx ; struct kvm_memslots * slots ; struct kvm_memory_slot * memslot ; idx = srcu_read_lock ( & kvm -> srcu ) ; slots = kvm_memslots ( kvm ) ; kvm_for_each_memslot ( memslot , slots ) <S2SV_StartBug> kvm_iommu_put_pages ( kvm , memslot -> base_gfn , memslot -> npages ) ; <S2SV_EndBug> srcu_read_unlock ( & kvm -> srcu , idx ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , slots ) kvm_iommu_unmap_pages <S2SV_ModEnd> ( kvm , <S2SV_ModStart> kvm , memslot <S2SV_ModEnd> ) ; srcu_read_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20786\n\n```\nCWE-476 INTERNAL void vterm_allocator_free ( VTerm * vt , void * ptr ) <S2SV_StartBug> { <S2SV_EndBug> ( * vt -> allocator -> free ) ( ptr , vt -> allocdata ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptr ) { if ( ptr )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * in ) { GradFunContext * s = inlink -> dst -> priv ; AVFilterLink * outlink = inlink -> dst -> outputs [ 0 ] ; AVFrame * out ; int p , direct ; if ( av_frame_is_writable ( in ) ) { direct = 1 ; out = in ; } else { direct = 0 ; out = ff_get_video_buffer ( outlink , outlink -> w , outlink -> h ) ; if ( ! out ) { av_frame_free ( & in ) ; return AVERROR ( ENOMEM ) ; } av_frame_copy_props ( out , in ) ; } <S2SV_StartBug> for ( p = 0 ; p < 4 && in -> data [ p ] ; p ++ ) { <S2SV_EndBug> int w = inlink -> w ; int h = inlink -> h ; int r = s -> radius ; if ( p ) { w = s -> chroma_w ; h = s -> chroma_h ; r = s -> chroma_r ; } if ( FFMIN ( w , h ) > 2 * r ) filter ( s , out -> data [ p ] , in -> data [ p ] , w , h , out -> linesize [ p ] , in -> linesize [ p ] , r ) ; else if ( out -> data [ p ] != in -> data [ p ] ) av_image_copy_plane ( out -> data [ p ] , out -> linesize [ p ] , in -> data [ p ] , in -> linesize [ p ] , w , h ) ; } if ( ! direct ) av_frame_free ( & in ) ; return ff_filter_frame ( outlink , out ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ p ] && in -> linesize [ p ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-426(不受信任的搜索路径)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10009\n\n```\nCWE-426 static void usage ( void ) { fprintf ( stderr , \"usage:<S2SV_blank>ssh-agent<S2SV_blank>[-c<S2SV_blank>|<S2SV_blank>-s]<S2SV_blank>[-Dd]<S2SV_blank>[-a<S2SV_blank>bind_address]<S2SV_blank>[-E<S2SV_blank>fingerprint_hash]\\\\n\" <S2SV_StartBug> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>[-t<S2SV_blank>life]<S2SV_blank>[command<S2SV_blank>[arg<S2SV_blank>...]]\\\\n\" <S2SV_EndBug> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ssh-agent<S2SV_blank>[-c<S2SV_blank>|<S2SV_blank>-s]<S2SV_blank>-k\\\\n\" ) ; exit ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stderr , \"usage:<S2SV_blank>ssh-agent<S2SV_blank>[-c<S2SV_blank>|<S2SV_blank>-s]<S2SV_blank>[-Dd]<S2SV_blank>[-a<S2SV_blank>bind_address]<S2SV_blank>[-E<S2SV_blank>fingerprint_hash]\\\\n\" \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>[-P<S2SV_blank>pkcs11_whitelist]<S2SV_blank>[-t<S2SV_blank>life]<S2SV_blank>[command<S2SV_blank>[arg<S2SV_blank>...]]\\\\n\" <S2SV_ModEnd> \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ssh-agent<S2SV_blank>[-c<S2SV_blank>|<S2SV_blank>-s]<S2SV_blank>-k\\\\n\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 <S2SV_StartBug> static int nfs4_intent_set_file ( struct nameidata * nd , struct path * path , struct nfs4_state * state ) <S2SV_EndBug> { struct file * filp ; int ret ; <S2SV_StartBug> if ( nd -> intent . open . flags & FMODE_EXEC ) { <S2SV_EndBug> ret = nfs_may_open ( state -> inode , state -> owner -> so_cred , nd -> intent . open . flags ) ; if ( ret < 0 ) goto out_close ; } filp = lookup_instantiate_filp ( nd , path -> dentry , NULL ) ; if ( ! IS_ERR ( filp ) ) { struct nfs_open_context * ctx ; ctx = nfs_file_open_context ( filp ) ; ctx -> state = state ; return 0 ; } ret = PTR_ERR ( filp ) ; out_close : <S2SV_StartBug> nfs4_close_sync ( path , state , nd -> intent . open . flags ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nfs4_state * state , fmode_t fmode <S2SV_ModStart> ; if ( fmode <S2SV_ModEnd> & FMODE_EXEC ) <S2SV_ModStart> , state , fmode & ( FMODE_READ | FMODE_WRITE ) <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int hash_recvmsg ( struct kiocb * unused , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sock * sk = sock -> sk ; struct alg_sock * ask = alg_sk ( sk ) ; struct hash_ctx * ctx = ask -> private ; unsigned ds = crypto_ahash_digestsize ( crypto_ahash_reqtfm ( & ctx -> req ) ) ; int err ; if ( len > ds ) len = ds ; else if ( len < ds ) msg -> msg_flags |= MSG_TRUNC ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> lock_sock ( sk ) ; if ( ctx -> more ) { ctx -> more = 0 ; ahash_request_set_crypt ( & ctx -> req , NULL , ctx -> result , 0 ) ; err = af_alg_wait_for_completion ( crypto_ahash_final ( & ctx -> req ) , & ctx -> completion ) ; if ( err ) goto unlock ; } err = memcpy_toiovec ( msg -> msg_iov , ctx -> result , len ) ; unlock : release_sock ( sk ) ; return err ? : len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= MSG_TRUNC ; <S2SV_ModEnd> lock_sock ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-200 static int crypto_report_comp ( struct sk_buff * skb , struct crypto_alg * alg ) { struct crypto_report_comp rcomp ; <S2SV_StartBug> strlcpy ( rcomp . type , \"compression\" , sizeof ( rcomp . type ) ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_COMPRESS , sizeof ( struct crypto_report_comp ) , & rcomp ) ) goto nla_put_failure ; return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> crypto_report_comp rcomp ; strncpy <S2SV_ModEnd> ( rcomp .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11939\n\n```\nCWE-190 static u_int16_t concat_hash_string ( struct ndpi_packet_struct * packet , char * buf , u_int8_t client_hash ) { <S2SV_StartBug> u_int16_t offset = 22 , buf_out_len = 0 ; <S2SV_EndBug> if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; u_int32_t len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; offset += 4 ; if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( buf , ( const char * ) & packet -> payload [ offset ] , buf_out_len = len ) ; buf [ buf_out_len ++ ] = ';' ; offset += len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_StartBug> offset += 4 + len ; <S2SV_EndBug> if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_StartBug> if ( client_hash ) { <S2SV_EndBug> <S2SV_StartBug> offset += 4 ; <S2SV_EndBug> if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; buf [ buf_out_len ++ ] = ';' ; <S2SV_StartBug> offset += len ; <S2SV_EndBug> } else offset += 4 + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_StartBug> if ( ! client_hash ) { <S2SV_EndBug> <S2SV_StartBug> offset += 4 ; <S2SV_EndBug> if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; buf [ buf_out_len ++ ] = ';' ; <S2SV_StartBug> offset += len ; <S2SV_EndBug> } else offset += 4 + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_StartBug> if ( client_hash ) { <S2SV_EndBug> <S2SV_StartBug> offset += 4 ; <S2SV_EndBug> if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; buf [ buf_out_len ++ ] = ';' ; <S2SV_StartBug> offset += len ; <S2SV_EndBug> } else offset += 4 + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_StartBug> if ( ! client_hash ) { <S2SV_EndBug> <S2SV_StartBug> offset += 4 ; <S2SV_EndBug> if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; buf [ buf_out_len ++ ] = ';' ; <S2SV_StartBug> offset += len ; <S2SV_EndBug> } else offset += 4 + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_StartBug> if ( client_hash ) { <S2SV_EndBug> <S2SV_StartBug> offset += 4 ; <S2SV_EndBug> if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; <S2SV_StartBug> offset += len ; <S2SV_EndBug> } else offset += 4 + len ; if ( offset + sizeof ( u_int32_t ) >= packet -> payload_packet_len ) goto invalid_payload ; len = ntohl ( * ( u_int32_t * ) & packet -> payload [ offset ] ) ; <S2SV_StartBug> if ( ! client_hash ) { <S2SV_EndBug> <S2SV_StartBug> offset += 4 ; <S2SV_EndBug> if ( ( offset >= packet -> payload_packet_len ) || ( len >= packet -> payload_packet_len - offset - 1 ) ) goto invalid_payload ; strncpy ( & buf [ buf_out_len ] , ( const char * ) & packet -> payload [ offset ] , len ) ; buf_out_len += len ; <S2SV_StartBug> offset += len ; <S2SV_EndBug> } else offset += 4 + len ; # ifdef SSH_DEBUG printf ( \"[SSH]<S2SV_blank>%s\\\\n\" , buf ) ; # endif return ( buf_out_len ) ; invalid_payload : # ifdef SSH_DEBUG printf ( \"[SSH]<S2SV_blank>Invalid<S2SV_blank>packet<S2SV_blank>payload\\\\n\" ) ; # endif return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> client_hash ) { u_int32_t <S2SV_ModEnd> offset = 22 <S2SV_ModStart> ] ) ; if ( len > UINT32_MAX - 4 - offset ) goto invalid_payload ; <S2SV_ModStart> ] ) ; offset += 4 ; <S2SV_ModStart> client_hash ) { <S2SV_ModEnd> if ( ( <S2SV_ModStart> = ';' ; } if ( len > UINT32_MAX - offset ) goto invalid_payload ; offset += <S2SV_ModEnd> len ; if <S2SV_ModStart> ] ) ; offset += 4 ; <S2SV_ModStart> client_hash ) { <S2SV_ModEnd> if ( ( <S2SV_ModStart> = ';' ; } if ( len > UINT32_MAX - offset ) goto invalid_payload ; offset += <S2SV_ModEnd> len ; if <S2SV_ModStart> ] ) ; offset += 4 ; <S2SV_ModStart> client_hash ) { <S2SV_ModEnd> if ( ( <S2SV_ModStart> = ';' ; } if ( len > UINT32_MAX - offset ) goto invalid_payload ; offset += <S2SV_ModEnd> len ; if <S2SV_ModStart> ] ) ; offset += 4 ; <S2SV_ModStart> client_hash ) { <S2SV_ModEnd> if ( ( <S2SV_ModStart> = ';' ; } if ( len > UINT32_MAX - offset ) goto invalid_payload ; offset += <S2SV_ModEnd> len ; if <S2SV_ModStart> ] ) ; offset += 4 ; <S2SV_ModStart> client_hash ) { <S2SV_ModEnd> if ( ( <S2SV_ModStart> += len ; } if ( len > UINT32_MAX - offset ) goto invalid_payload ; offset += <S2SV_ModEnd> len ; if <S2SV_ModStart> ] ) ; offset += 4 ; <S2SV_ModStart> client_hash ) { <S2SV_ModEnd> if ( ( <S2SV_ModStart> += len ; } if ( len > UINT32_MAX - offset ) goto invalid_payload ; offset += <S2SV_ModEnd> len ; #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 static int link_pipe ( struct pipe_inode_info * ipipe , struct pipe_inode_info * opipe , size_t len , unsigned int flags ) { struct pipe_buffer * ibuf , * obuf ; int ret = 0 , i = 0 , nbuf ; pipe_double_lock ( ipipe , opipe ) ; do { if ( ! opipe -> readers ) { send_sig ( SIGPIPE , current , 0 ) ; if ( ! ret ) ret = - EPIPE ; break ; } if ( i >= ipipe -> nrbufs || opipe -> nrbufs >= opipe -> buffers ) break ; ibuf = ipipe -> bufs + ( ( ipipe -> curbuf + i ) & ( ipipe -> buffers - 1 ) ) ; nbuf = ( opipe -> curbuf + opipe -> nrbufs ) & ( opipe -> buffers - 1 ) ; <S2SV_StartBug> pipe_buf_get ( ipipe , ibuf ) ; <S2SV_EndBug> obuf = opipe -> bufs + nbuf ; * obuf = * ibuf ; obuf -> flags &= ~ PIPE_BUF_FLAG_GIFT ; pipe_buf_mark_unmergeable ( obuf ) ; if ( obuf -> len > len ) obuf -> len = len ; opipe -> nrbufs ++ ; ret += obuf -> len ; len -= obuf -> len ; i ++ ; } while ( len ) ; if ( ! ret && ipipe -> waiting_writers && ( flags & SPLICE_F_NONBLOCK ) ) ret = - EAGAIN ; pipe_unlock ( ipipe ) ; pipe_unlock ( opipe ) ; if ( ret > 0 ) wakeup_pipe_readers ( opipe ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( ! <S2SV_ModStart> , ibuf ) ) { if ( ret == 0 ) ret = - EFAULT ; break ; } <S2SV_ModEnd> obuf = opipe\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2546\n\n```\nCWE-362 static long snd_timer_user_ioctl ( struct file * file , unsigned int cmd , unsigned long arg ) { <S2SV_StartBug> struct snd_timer_user * tu ; <S2SV_EndBug> void __user * argp = ( void __user * ) arg ; int __user * p = argp ; tu = file -> private_data ; <S2SV_StartBug> switch ( cmd ) { <S2SV_EndBug> case SNDRV_TIMER_IOCTL_PVERSION : return put_user ( SNDRV_TIMER_VERSION , p ) ? - EFAULT : 0 ; case SNDRV_TIMER_IOCTL_NEXT_DEVICE : return snd_timer_user_next_device ( argp ) ; case SNDRV_TIMER_IOCTL_TREAD : { int xarg ; <S2SV_StartBug> mutex_lock ( & tu -> tread_sem ) ; <S2SV_EndBug> if ( tu -> timeri ) { mutex_unlock ( & tu -> tread_sem ) ; return - EBUSY ; } if ( get_user ( xarg , p ) ) { mutex_unlock ( & tu -> tread_sem ) ; return - EFAULT ; } tu -> tread = xarg ? 1 : 0 ; <S2SV_StartBug> mutex_unlock ( & tu -> tread_sem ) ; <S2SV_EndBug> <S2SV_StartBug> return 0 ; <S2SV_EndBug> } case SNDRV_TIMER_IOCTL_GINFO : return snd_timer_user_ginfo ( file , argp ) ; case SNDRV_TIMER_IOCTL_GPARAMS : return snd_timer_user_gparams ( file , argp ) ; case SNDRV_TIMER_IOCTL_GSTATUS : return snd_timer_user_gstatus ( file , argp ) ; case SNDRV_TIMER_IOCTL_SELECT : return snd_timer_user_tselect ( file , argp ) ; case SNDRV_TIMER_IOCTL_INFO : return snd_timer_user_info ( file , argp ) ; case SNDRV_TIMER_IOCTL_PARAMS : return snd_timer_user_params ( file , argp ) ; case SNDRV_TIMER_IOCTL_STATUS : return snd_timer_user_status ( file , argp ) ; case SNDRV_TIMER_IOCTL_START : case SNDRV_TIMER_IOCTL_START_OLD : return snd_timer_user_start ( file ) ; case SNDRV_TIMER_IOCTL_STOP : case SNDRV_TIMER_IOCTL_STOP_OLD : return snd_timer_user_stop ( file ) ; case SNDRV_TIMER_IOCTL_CONTINUE : case SNDRV_TIMER_IOCTL_CONTINUE_OLD : return snd_timer_user_continue ( file ) ; case SNDRV_TIMER_IOCTL_PAUSE : case SNDRV_TIMER_IOCTL_PAUSE_OLD : return snd_timer_user_pause ( file ) ; } return - ENOTTY ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snd_timer_user * tu <S2SV_ModEnd> = file -> <S2SV_ModStart> -> private_data ; long ret <S2SV_ModEnd> ; mutex_lock ( <S2SV_ModStart> & tu -> ioctl_lock ) ; ret = __snd_timer_user_ioctl ( file , cmd , arg ) <S2SV_ModEnd> ; mutex_unlock ( <S2SV_ModStart> & tu -> ioctl_lock <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7911\n\n```\nCWE-362 static int get_task_ioprio ( struct task_struct * p ) { int ret ; ret = security_task_getioprio ( p ) ; if ( ret ) goto out ; ret = IOPRIO_PRIO_VALUE ( IOPRIO_CLASS_NONE , IOPRIO_NORM ) ; <S2SV_StartBug> if ( p -> io_context ) <S2SV_EndBug> ret = p -> io_context -> ioprio ; <S2SV_StartBug> out : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IOPRIO_NORM ) ; task_lock ( p ) ; <S2SV_ModStart> -> ioprio ; task_unlock ( p ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7191\n\n```\nCWE-416 void fe_netjoin_init ( void ) { settings_add_bool ( \"misc\" , \"hide_netsplit_quits\" , TRUE ) ; settings_add_int ( \"misc\" , \"netjoin_max_nicks\" , 10 ) ; join_tag = - 1 ; printing_joins = FALSE ; read_settings ( ) ; signal_add ( \"setup<S2SV_blank>changed\" , ( SIGNAL_FUNC ) read_settings ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> read_settings ) ; signal_add ( \"server<S2SV_blank>disconnected\" , ( SIGNAL_FUNC ) sig_server_disconnected ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_bilinear_predict4x4_neon ( unsigned char * src_ptr , int src_pixels_per_line , int xoffset , int yoffset , unsigned char * dst_ptr , int dst_pitch ) { uint8x8_t d0u8 , d1u8 , d2u8 , d3u8 , d4u8 , d5u8 , d6u8 ; uint8x8_t d26u8 , d27u8 , d28u8 , d29u8 , d30u8 ; <S2SV_StartBug> uint32x2_t d28u32 , d29u32 , d30u32 ; <S2SV_EndBug> uint8x16_t q1u8 , q2u8 ; uint16x8_t q1u16 , q2u16 ; uint16x8_t q7u16 , q8u16 , q9u16 ; uint64x2_t q4u64 , q5u64 ; uint64x1_t d12u64 ; uint32x2x2_t d0u32x2 , d1u32x2 , d2u32x2 , d3u32x2 ; if ( xoffset == 0 ) { d28u32 = vld1_lane_u32 ( ( const uint32_t * ) src_ptr , d28u32 , 0 ) ; src_ptr += src_pixels_per_line ; d28u32 = vld1_lane_u32 ( ( const uint32_t * ) src_ptr , d28u32 , 1 ) ; src_ptr += src_pixels_per_line ; d29u32 = vld1_lane_u32 ( ( const uint32_t * ) src_ptr , d29u32 , 0 ) ; src_ptr += src_pixels_per_line ; d29u32 = vld1_lane_u32 ( ( const uint32_t * ) src_ptr , d29u32 , 1 ) ; src_ptr += src_pixels_per_line ; d30u32 = vld1_lane_u32 ( ( const uint32_t * ) src_ptr , d30u32 , 0 ) ; d28u8 = vreinterpret_u8_u32 ( d28u32 ) ; d29u8 = vreinterpret_u8_u32 ( d29u32 ) ; d30u8 = vreinterpret_u8_u32 ( d30u32 ) ; } else { d2u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d3u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d4u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d5u8 = vld1_u8 ( src_ptr ) ; src_ptr += src_pixels_per_line ; d6u8 = vld1_u8 ( src_ptr ) ; q1u8 = vcombine_u8 ( d2u8 , d3u8 ) ; q2u8 = vcombine_u8 ( d4u8 , d5u8 ) ; <S2SV_StartBug> d0u8 = vdup_n_u8 ( ( uint8_t ) bifilter4_coeff [ xoffset ] [ 0 ] ) ; <S2SV_EndBug> <S2SV_StartBug> d1u8 = vdup_n_u8 ( ( uint8_t ) bifilter4_coeff [ xoffset ] [ 1 ] ) ; <S2SV_EndBug> q4u64 = vshrq_n_u64 ( vreinterpretq_u64_u8 ( q1u8 ) , 8 ) ; q5u64 = vshrq_n_u64 ( vreinterpretq_u64_u8 ( q2u8 ) , 8 ) ; d12u64 = vshr_n_u64 ( vreinterpret_u64_u8 ( d6u8 ) , 8 ) ; d0u32x2 = vzip_u32 ( vreinterpret_u32_u8 ( vget_low_u8 ( q1u8 ) ) , vreinterpret_u32_u8 ( vget_high_u8 ( q1u8 ) ) ) ; d1u32x2 = vzip_u32 ( vreinterpret_u32_u8 ( vget_low_u8 ( q2u8 ) ) , vreinterpret_u32_u8 ( vget_high_u8 ( q2u8 ) ) ) ; d2u32x2 = vzip_u32 ( vreinterpret_u32_u64 ( vget_low_u64 ( q4u64 ) ) , vreinterpret_u32_u64 ( vget_high_u64 ( q4u64 ) ) ) ; d3u32x2 = vzip_u32 ( vreinterpret_u32_u64 ( vget_low_u64 ( q5u64 ) ) , vreinterpret_u32_u64 ( vget_high_u64 ( q5u64 ) ) ) ; q7u16 = vmull_u8 ( vreinterpret_u8_u32 ( d0u32x2 . val [ 0 ] ) , d0u8 ) ; q8u16 = vmull_u8 ( vreinterpret_u8_u32 ( d1u32x2 . val [ 0 ] ) , d0u8 ) ; q9u16 = vmull_u8 ( d6u8 , d0u8 ) ; q7u16 = vmlal_u8 ( q7u16 , vreinterpret_u8_u32 ( d2u32x2 . val [ 0 ] ) , d1u8 ) ; q8u16 = vmlal_u8 ( q8u16 , vreinterpret_u8_u32 ( d3u32x2 . val [ 0 ] ) , d1u8 ) ; q9u16 = vmlal_u8 ( q9u16 , vreinterpret_u8_u64 ( d12u64 ) , d1u8 ) ; d28u8 = vqrshrn_n_u16 ( q7u16 , 7 ) ; d29u8 = vqrshrn_n_u16 ( q8u16 , 7 ) ; d30u8 = vqrshrn_n_u16 ( q9u16 , 7 ) ; } if ( yoffset == 0 ) { vst1_lane_u32 ( ( uint32_t * ) dst_ptr , vreinterpret_u32_u8 ( d28u8 ) , 0 ) ; dst_ptr += dst_pitch ; vst1_lane_u32 ( ( uint32_t * ) dst_ptr , vreinterpret_u32_u8 ( d28u8 ) , 1 ) ; dst_ptr += dst_pitch ; vst1_lane_u32 ( ( uint32_t * ) dst_ptr , vreinterpret_u32_u8 ( d29u8 ) , 0 ) ; dst_ptr += dst_pitch ; vst1_lane_u32 ( ( uint32_t * ) dst_ptr , vreinterpret_u32_u8 ( d29u8 ) , 1 ) ; } else { d0u8 = vdup_n_u8 ( bifilter4_coeff [ yoffset ] [ 0 ] ) ; d1u8 = vdup_n_u8 ( bifilter4_coeff [ yoffset ] [ 1 ] ) ; q1u16 = vmull_u8 ( d28u8 , d0u8 ) ; q2u16 = vmull_u8 ( d29u8 , d0u8 ) ; d26u8 = vext_u8 ( d28u8 , d29u8 , 4 ) ; d27u8 = vext_u8 ( d29u8 , d30u8 , 4 ) ; q1u16 = vmlal_u8 ( q1u16 , d26u8 , d1u8 ) ; q2u16 = vmlal_u8 ( q2u16 , d27u8 , d1u8 ) ; d2u8 = vqrshrn_n_u16 ( q1u16 , 7 ) ; d3u8 = vqrshrn_n_u16 ( q2u16 , 7 ) ; vst1_lane_u32 ( ( uint32_t * ) dst_ptr , vreinterpret_u32_u8 ( d2u8 ) , 0 ) ; dst_ptr += dst_pitch ; vst1_lane_u32 ( ( uint32_t * ) dst_ptr , vreinterpret_u32_u8 ( d2u8 ) , 1 ) ; dst_ptr += dst_pitch ; vst1_lane_u32 ( ( uint32_t * ) dst_ptr , vreinterpret_u32_u8 ( d3u8 ) , 0 ) ; dst_ptr += dst_pitch ; vst1_lane_u32 ( ( uint32_t * ) dst_ptr , vreinterpret_u32_u8 ( d3u8 ) , 1 ) ; } return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , d30u8 ; uint8x16_t q1u8 , q2u8 ; uint16x8_t q1u16 , q2u16 ; uint16x8_t q7u16 , q8u16 , q9u16 ; uint64x2_t q4u64 , q5u64 ; uint64x1_t d12u64 ; uint32x2x2_t d0u32x2 , d1u32x2 , d2u32x2 , d3u32x2 ; if ( xoffset == 0 ) { uint32x2_t d28u32 = vdup_n_u32 ( 0 ) ; uint32x2_t d29u32 = vdup_n_u32 ( 0 ) ; uint32x2_t d30u32 = vdup_n_u32 ( 0 ) ; <S2SV_ModEnd> d28u32 = vld1_lane_u32 <S2SV_ModStart> = vdup_n_u8 ( <S2SV_ModEnd> bifilter4_coeff [ xoffset <S2SV_ModStart> = vdup_n_u8 ( <S2SV_ModEnd> bifilter4_coeff [ xoffset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 struct bpf_map * bpf_map_get_with_uref ( u32 ufd ) { struct fd f = fdget ( ufd ) ; struct bpf_map * map ; map = __bpf_map_get ( f ) ; if ( IS_ERR ( map ) ) return map ; <S2SV_StartBug> bpf_map_inc ( map , true ) ; <S2SV_EndBug> fdput ( f ) ; return map ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return map ; map =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9907\n\n```\nCWE-20 static inline void VectorClamp ( DDSVector4 * value ) { <S2SV_StartBug> value -> x = MinF ( 1.0f , MaxF ( 0.0f , value -> x ) ) ; <S2SV_EndBug> <S2SV_StartBug> value -> y = MinF ( 1.0f , MaxF ( 0.0f , value -> y ) ) ; <S2SV_EndBug> <S2SV_StartBug> value -> z = MinF ( 1.0f , MaxF ( 0.0f , value -> z ) ) ; <S2SV_EndBug> <S2SV_StartBug> value -> w = MinF ( 1.0f , MaxF ( 0.0f , value -> w ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> x = MagickMin <S2SV_ModEnd> ( 1.0f , <S2SV_ModStart> ( 1.0f , MagickMax <S2SV_ModEnd> ( 0.0f , <S2SV_ModStart> -> y = MagickMin <S2SV_ModEnd> ( 1.0f , <S2SV_ModStart> ( 1.0f , MagickMax <S2SV_ModEnd> ( 0.0f , <S2SV_ModStart> -> z = MagickMin <S2SV_ModEnd> ( 1.0f , <S2SV_ModStart> ( 1.0f , MagickMax <S2SV_ModEnd> ( 0.0f , <S2SV_ModStart> -> w = MagickMin <S2SV_ModEnd> ( 1.0f , <S2SV_ModStart> ( 1.0f , MagickMax <S2SV_ModEnd> ( 0.0f ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6194\n\n```\nCWE-119 static int search_old_relocation ( struct reloc_struct_t * reloc_table , ut32 addr_to_patch , int n_reloc ) { int i ; for ( i = 0 ; i < n_reloc ; i ++ ) { if ( addr_to_patch == reloc_table [ i ] . data_offset ) { return i ; } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18360\n\n```\nCWE-369 static void change_port_settings ( struct tty_struct * tty , struct edgeport_port * edge_port , struct ktermios * old_termios ) { struct device * dev = & edge_port -> port -> dev ; struct ump_uart_config * config ; int baud ; unsigned cflag ; int status ; int port_number = edge_port -> port -> port_number ; config = kmalloc ( sizeof ( * config ) , GFP_KERNEL ) ; if ( ! config ) { tty -> termios = * old_termios ; return ; } cflag = tty -> termios . c_cflag ; config -> wFlags = 0 ; config -> wFlags |= UMP_MASK_UART_FLAGS_RECEIVE_MS_INT ; config -> wFlags |= UMP_MASK_UART_FLAGS_AUTO_START_ON_ERR ; config -> bUartMode = ( __u8 ) ( edge_port -> bUartMode ) ; switch ( cflag & CSIZE ) { case CS5 : config -> bDataBits = UMP_UART_CHAR5BITS ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>data<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>5\\\\n\" , __func__ ) ; break ; case CS6 : config -> bDataBits = UMP_UART_CHAR6BITS ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>data<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>6\\\\n\" , __func__ ) ; break ; case CS7 : config -> bDataBits = UMP_UART_CHAR7BITS ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>data<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>7\\\\n\" , __func__ ) ; break ; default : case CS8 : config -> bDataBits = UMP_UART_CHAR8BITS ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>data<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>8\\\\n\" , __func__ ) ; break ; } if ( cflag & PARENB ) { if ( cflag & PARODD ) { config -> wFlags |= UMP_MASK_UART_FLAGS_PARITY ; config -> bParity = UMP_UART_ODDPARITY ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>parity<S2SV_blank>=<S2SV_blank>odd\\\\n\" , __func__ ) ; } else { config -> wFlags |= UMP_MASK_UART_FLAGS_PARITY ; config -> bParity = UMP_UART_EVENPARITY ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>parity<S2SV_blank>=<S2SV_blank>even\\\\n\" , __func__ ) ; } } else { config -> bParity = UMP_UART_NOPARITY ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>parity<S2SV_blank>=<S2SV_blank>none\\\\n\" , __func__ ) ; } if ( cflag & CSTOPB ) { config -> bStopBits = UMP_UART_STOPBIT2 ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>stop<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>2\\\\n\" , __func__ ) ; } else { config -> bStopBits = UMP_UART_STOPBIT1 ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>stop<S2SV_blank>bits<S2SV_blank>=<S2SV_blank>1\\\\n\" , __func__ ) ; } if ( cflag & CRTSCTS ) { config -> wFlags |= UMP_MASK_UART_FLAGS_OUT_X_CTS_FLOW ; config -> wFlags |= UMP_MASK_UART_FLAGS_RTS_FLOW ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>RTS/CTS<S2SV_blank>is<S2SV_blank>enabled\\\\n\" , __func__ ) ; } else { dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>RTS/CTS<S2SV_blank>is<S2SV_blank>disabled\\\\n\" , __func__ ) ; restart_read ( edge_port ) ; } config -> cXon = START_CHAR ( tty ) ; config -> cXoff = STOP_CHAR ( tty ) ; if ( I_IXOFF ( tty ) ) { config -> wFlags |= UMP_MASK_UART_FLAGS_IN_X ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>INBOUND<S2SV_blank>XON/XOFF<S2SV_blank>is<S2SV_blank>enabled,<S2SV_blank>XON<S2SV_blank>=<S2SV_blank>%2x,<S2SV_blank>XOFF<S2SV_blank>=<S2SV_blank>%2x\\\\n\" , __func__ , config -> cXon , config -> cXoff ) ; } else dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>INBOUND<S2SV_blank>XON/XOFF<S2SV_blank>is<S2SV_blank>disabled\\\\n\" , __func__ ) ; if ( I_IXON ( tty ) ) { config -> wFlags |= UMP_MASK_UART_FLAGS_OUT_X ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>OUTBOUND<S2SV_blank>XON/XOFF<S2SV_blank>is<S2SV_blank>enabled,<S2SV_blank>XON<S2SV_blank>=<S2SV_blank>%2x,<S2SV_blank>XOFF<S2SV_blank>=<S2SV_blank>%2x\\\\n\" , __func__ , config -> cXon , config -> cXoff ) ; } else dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>OUTBOUND<S2SV_blank>XON/XOFF<S2SV_blank>is<S2SV_blank>disabled\\\\n\" , __func__ ) ; tty -> termios . c_cflag &= ~ CMSPAR ; baud = tty_get_baud_rate ( tty ) ; if ( ! baud ) { baud = 9600 ; <S2SV_StartBug> } else <S2SV_EndBug> <S2SV_StartBug> tty_encode_baud_rate ( tty , baud , baud ) ; <S2SV_EndBug> edge_port -> baud_rate = baud ; config -> wBaudRate = ( __u16 ) ( ( 461550L + baud / 2 ) / baud ) ; dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>baud<S2SV_blank>rate<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>wBaudRate<S2SV_blank>=<S2SV_blank>%d\\\\n\" , __func__ , baud , config -> wBaudRate ) ; dev_dbg ( dev , \"wBaudRate:<S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , ( int ) ( 461550L / config -> wBaudRate ) ) ; dev_dbg ( dev , \"wFlags:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%x\\\\n\" , config -> wFlags ) ; dev_dbg ( dev , \"bDataBits:<S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> bDataBits ) ; dev_dbg ( dev , \"bParity:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> bParity ) ; dev_dbg ( dev , \"bStopBits:<S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> bStopBits ) ; dev_dbg ( dev , \"cXon:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> cXon ) ; dev_dbg ( dev , \"cXoff:<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> cXoff ) ; dev_dbg ( dev , \"bUartMode:<S2SV_blank><S2SV_blank><S2SV_blank>%d\\\\n\" , config -> bUartMode ) ; cpu_to_be16s ( & config -> wFlags ) ; cpu_to_be16s ( & config -> wBaudRate ) ; status = send_cmd ( edge_port -> port -> serial -> dev , UMPC_SET_CONFIG , ( __u8 ) ( UMPM_UART1_PORT + port_number ) , 0 , ( __u8 * ) config , sizeof ( * config ) ) ; if ( status ) dev_dbg ( dev , \"%s<S2SV_blank>-<S2SV_blank>error<S2SV_blank>%d<S2SV_blank>when<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>write<S2SV_blank>config<S2SV_blank>to<S2SV_blank>device\\\\n\" , __func__ , status ) ; kfree ( config ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } else { baud = min ( baud , 461550 ) ; <S2SV_ModStart> baud ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 struct timespec ns_to_timespec ( const s64 nsec ) { <S2SV_StartBug> struct timespec ts ; <S2SV_EndBug> if ( ! nsec ) return ( struct timespec ) { 0 , 0 } ; <S2SV_StartBug> ts . tv_sec = div_long_long_rem_signed ( nsec , NSEC_PER_SEC , & ts . tv_nsec ) ; <S2SV_EndBug> <S2SV_StartBug> if ( unlikely ( nsec < 0 ) ) <S2SV_EndBug> <S2SV_StartBug> set_normalized_timespec ( & ts , ts . tv_sec , ts . tv_nsec ) ; <S2SV_EndBug> return ts ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct timespec ts ; s32 rem <S2SV_ModStart> . tv_sec = div_s64_rem <S2SV_ModEnd> ( nsec , <S2SV_ModStart> NSEC_PER_SEC , & rem <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( unlikely ( rem <S2SV_ModEnd> < 0 ) <S2SV_ModStart> 0 ) ) { <S2SV_ModEnd> ts . tv_sec <S2SV_ModStart> ts . tv_sec -- ; rem += NSEC_PER_SEC ; } <S2SV_ModEnd> ts . tv_nsec <S2SV_ModStart> ts . tv_nsec = rem <S2SV_ModEnd> ; return ts\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 <S2SV_StartBug> void Huff_transmit ( huff_t * huff , int ch , byte * fout ) { <S2SV_EndBug> int i ; if ( huff -> loc [ ch ] == NULL ) { <S2SV_StartBug> Huff_transmit ( huff , NYT , fout ) ; <S2SV_EndBug> for ( i = 7 ; i >= 0 ; i -- ) { add_bit ( ( char ) ( ( ch >> i ) & 0x1 ) , fout ) ; } } else { <S2SV_StartBug> send ( huff -> loc [ ch ] , NULL , fout ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> byte * fout , int maxoffset <S2SV_ModStart> NYT , fout , maxoffset <S2SV_ModStart> NULL , fout , maxoffset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3231\n\n```\nCWE-200 static int llc_ui_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { struct sockaddr_llc * uaddr = ( struct sockaddr_llc * ) msg -> msg_name ; const int nonblock = flags & MSG_DONTWAIT ; struct sk_buff * skb = NULL ; struct sock * sk = sock -> sk ; struct llc_sock * llc = llc_sk ( sk ) ; unsigned long cpu_flags ; size_t copied = 0 ; u32 peek_seq = 0 ; u32 * seq ; unsigned long used ; int target ; <S2SV_StartBug> long timeo ; <S2SV_EndBug> lock_sock ( sk ) ; copied = - ENOTCONN ; if ( unlikely ( sk -> sk_type == SOCK_STREAM && sk -> sk_state == TCP_LISTEN ) ) goto out ; timeo = sock_rcvtimeo ( sk , nonblock ) ; seq = & llc -> copied_seq ; if ( flags & MSG_PEEK ) { peek_seq = llc -> copied_seq ; seq = & peek_seq ; } target = sock_rcvlowat ( sk , flags & MSG_WAITALL , len ) ; copied = 0 ; do { u32 offset ; if ( signal_pending ( current ) ) { if ( copied ) break ; copied = timeo ? sock_intr_errno ( timeo ) : - EAGAIN ; break ; } skb = skb_peek ( & sk -> sk_receive_queue ) ; if ( skb ) { offset = * seq ; goto found_ok_skb ; } if ( copied >= target && ! sk -> sk_backlog . tail ) break ; if ( copied ) { if ( sk -> sk_err || sk -> sk_state == TCP_CLOSE || ( sk -> sk_shutdown & RCV_SHUTDOWN ) || ! timeo || ( flags & MSG_PEEK ) ) break ; } else { if ( sock_flag ( sk , SOCK_DONE ) ) break ; if ( sk -> sk_err ) { copied = sock_error ( sk ) ; break ; } if ( sk -> sk_shutdown & RCV_SHUTDOWN ) break ; if ( sk -> sk_type == SOCK_STREAM && sk -> sk_state == TCP_CLOSE ) { if ( ! sock_flag ( sk , SOCK_DONE ) ) { copied = - ENOTCONN ; break ; } break ; } if ( ! timeo ) { copied = - EAGAIN ; break ; } } if ( copied >= target ) { release_sock ( sk ) ; lock_sock ( sk ) ; } else sk_wait_data ( sk , & timeo ) ; if ( ( flags & MSG_PEEK ) && peek_seq != llc -> copied_seq ) { net_dbg_ratelimited ( \"LLC(%s:%d):<S2SV_blank>Application<S2SV_blank>bug,<S2SV_blank>race<S2SV_blank>in<S2SV_blank>MSG_PEEK\\\\n\" , current -> comm , task_pid_nr ( current ) ) ; peek_seq = llc -> copied_seq ; } continue ; found_ok_skb : used = skb -> len - offset ; if ( len < used ) used = len ; if ( ! ( flags & MSG_TRUNC ) ) { int rc = skb_copy_datagram_iovec ( skb , offset , msg -> msg_iov , used ) ; if ( rc ) { if ( ! copied ) copied = - EFAULT ; break ; } } * seq += used ; copied += used ; len -= used ; if ( sk -> sk_type != SOCK_STREAM ) goto copy_uaddr ; if ( ! ( flags & MSG_PEEK ) ) { spin_lock_irqsave ( & sk -> sk_receive_queue . lock , cpu_flags ) ; sk_eat_skb ( sk , skb , false ) ; spin_unlock_irqrestore ( & sk -> sk_receive_queue . lock , cpu_flags ) ; * seq = 0 ; } if ( used + offset < skb -> len ) continue ; } while ( len > 0 ) ; out : release_sock ( sk ) ; return copied ; copy_uaddr : if ( uaddr != NULL && skb != NULL ) { memcpy ( uaddr , llc_ui_skb_cb ( skb ) , sizeof ( * uaddr ) ) ; msg -> msg_namelen = sizeof ( * uaddr ) ; } if ( llc_sk ( sk ) -> cmsg_flags ) llc_cmsg_rcv ( msg , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { spin_lock_irqsave ( & sk -> sk_receive_queue . lock , cpu_flags ) ; sk_eat_skb ( sk , skb , false ) ; spin_unlock_irqrestore ( & sk -> sk_receive_queue . lock , cpu_flags ) ; * seq = 0 ; } goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; long timeo ; msg -> msg_namelen = 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3191\n\n```\nCWE-119 int CIFSFindNext ( const int xid , struct cifs_tcon * tcon , __u16 searchHandle , struct cifs_search_info * psrch_inf ) { TRANSACTION2_FNEXT_REQ * pSMB = NULL ; TRANSACTION2_FNEXT_RSP * pSMBr = NULL ; T2_FNEXT_RSP_PARMS * parms ; char * response_data ; int rc = 0 ; <S2SV_StartBug> int bytes_returned , name_len ; <S2SV_EndBug> __u16 params , byte_count ; cFYI ( 1 , \"In<S2SV_blank>FindNext\" ) ; if ( psrch_inf -> endOfSearch ) return - ENOENT ; rc = smb_init ( SMB_COM_TRANSACTION2 , 15 , tcon , ( void * * ) & pSMB , ( void * * ) & pSMBr ) ; if ( rc ) return rc ; params = 14 ; byte_count = 0 ; pSMB -> TotalDataCount = 0 ; pSMB -> MaxParameterCount = cpu_to_le16 ( 8 ) ; pSMB -> MaxDataCount = cpu_to_le16 ( ( tcon -> ses -> server -> maxBuf - MAX_CIFS_HDR_SIZE ) & 0xFFFFFF00 ) ; pSMB -> MaxSetupCount = 0 ; pSMB -> Reserved = 0 ; pSMB -> Flags = 0 ; pSMB -> Timeout = 0 ; pSMB -> Reserved2 = 0 ; pSMB -> ParameterOffset = cpu_to_le16 ( offsetof ( struct smb_com_transaction2_fnext_req , SearchHandle ) - 4 ) ; pSMB -> DataCount = 0 ; pSMB -> DataOffset = 0 ; pSMB -> SetupCount = 1 ; pSMB -> Reserved3 = 0 ; pSMB -> SubCommand = cpu_to_le16 ( TRANS2_FIND_NEXT ) ; pSMB -> SearchHandle = searchHandle ; pSMB -> SearchCount = cpu_to_le16 ( CIFSMaxBufSize / sizeof ( FILE_UNIX_INFO ) ) ; pSMB -> InformationLevel = cpu_to_le16 ( psrch_inf -> info_level ) ; pSMB -> ResumeKey = psrch_inf -> resume_key ; pSMB -> SearchFlags = cpu_to_le16 ( CIFS_SEARCH_CLOSE_AT_END | CIFS_SEARCH_RETURN_RESUME ) ; name_len = psrch_inf -> resume_name_len ; params += name_len ; if ( name_len < PATH_MAX ) { memcpy ( pSMB -> ResumeFileName , psrch_inf -> presume_name , name_len ) ; byte_count += name_len ; pSMB -> ResumeFileName [ name_len ] = 0 ; pSMB -> ResumeFileName [ name_len + 1 ] = 0 ; } else { rc = - EINVAL ; goto FNext2_err_exit ; } byte_count = params + 1 ; pSMB -> TotalParameterCount = cpu_to_le16 ( params ) ; pSMB -> ParameterCount = pSMB -> TotalParameterCount ; inc_rfc1001_len ( pSMB , byte_count ) ; pSMB -> ByteCount = cpu_to_le16 ( byte_count ) ; rc = SendReceive ( xid , tcon -> ses , ( struct smb_hdr * ) pSMB , ( struct smb_hdr * ) pSMBr , & bytes_returned , 0 ) ; cifs_stats_inc ( & tcon -> num_fnext ) ; if ( rc ) { if ( rc == - EBADF ) { psrch_inf -> endOfSearch = true ; cifs_buf_release ( pSMB ) ; rc = 0 ; } else cFYI ( 1 , \"FindNext<S2SV_blank>returned<S2SV_blank>=<S2SV_blank>%d\" , rc ) ; } else { rc = validate_t2 ( ( struct smb_t2_rsp * ) pSMBr ) ; if ( rc == 0 ) { unsigned int lnoff ; if ( pSMBr -> hdr . Flags2 & SMBFLG2_UNICODE ) psrch_inf -> unicode = true ; else psrch_inf -> unicode = false ; response_data = ( char * ) & pSMBr -> hdr . Protocol + le16_to_cpu ( pSMBr -> t2 . ParameterOffset ) ; parms = ( T2_FNEXT_RSP_PARMS * ) response_data ; response_data = ( char * ) & pSMBr -> hdr . Protocol + le16_to_cpu ( pSMBr -> t2 . DataOffset ) ; if ( psrch_inf -> smallBuf ) cifs_small_buf_release ( psrch_inf -> ntwrk_buf_start ) ; else cifs_buf_release ( psrch_inf -> ntwrk_buf_start ) ; psrch_inf -> srch_entries_start = response_data ; psrch_inf -> ntwrk_buf_start = ( char * ) pSMB ; psrch_inf -> smallBuf = 0 ; if ( parms -> EndofSearch ) psrch_inf -> endOfSearch = true ; else psrch_inf -> endOfSearch = false ; psrch_inf -> entries_in_buffer = le16_to_cpu ( parms -> SearchCount ) ; psrch_inf -> index_of_last_entry += psrch_inf -> entries_in_buffer ; lnoff = le16_to_cpu ( parms -> LastNameOffset ) ; if ( tcon -> ses -> server -> maxBuf - MAX_CIFS_HDR_SIZE < lnoff ) { cERROR ( 1 , \"ignoring<S2SV_blank>corrupt<S2SV_blank>resume<S2SV_blank>name\" ) ; psrch_inf -> last_entry = NULL ; return rc ; } else psrch_inf -> last_entry = psrch_inf -> srch_entries_start + lnoff ; } } FNext2_err_exit : if ( rc != 0 ) cifs_buf_release ( pSMB ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int bytes_returned ; unsigned int <S2SV_ModEnd> name_len ; __u16\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10124\n\n```\nCWE-119 static int kill_something_info ( int sig , struct siginfo * info , pid_t pid ) { int ret ; if ( pid > 0 ) { rcu_read_lock ( ) ; ret = kill_pid_info ( sig , info , find_vpid ( pid ) ) ; rcu_read_unlock ( ) ; return ret ; <S2SV_StartBug> } <S2SV_EndBug> read_lock ( & tasklist_lock ) ; if ( pid != - 1 ) { ret = __kill_pgrp_info ( sig , info , pid ? find_vpid ( - pid ) : task_pgrp ( current ) ) ; } else { int retval = 0 , count = 0 ; struct task_struct * p ; for_each_process ( p ) { if ( task_pid_vnr ( p ) > 1 && ! same_thread_group ( p , current ) ) { int err = group_send_sig_info ( sig , info , p ) ; ++ count ; if ( err != - EPERM ) retval = err ; } } ret = count ? retval : - ESRCH ; } read_unlock ( & tasklist_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret ; } if ( pid == INT_MIN ) return - ESRCH ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15148\n\n```\nCWE-787 GPMF_ERR IsValidSize ( GPMF_stream * ms , uint32_t size ) { if ( ms ) { <S2SV_StartBug> int32_t nestsize = ( int32_t ) ms -> nest_size [ ms -> nest_level ] ; <S2SV_EndBug> if ( nestsize == 0 && ms -> nest_level == 0 ) nestsize = ms -> buffer_size_longs ; if ( size + 2 <= nestsize ) return GPMF_OK ; } return GPMF_ERROR_BAD_STRUCTURE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ms ) { uint32_t <S2SV_ModEnd> nestsize = ( <S2SV_ModStart> nestsize = ( uint32_t <S2SV_ModEnd> ) ms ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-352(跨站请求伪造(CSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7067\n\n```\nCWE-352 static HttpResponse create_HttpResponse ( Socket_T S ) { HttpResponse res = NULL ; NEW ( res ) ; res -> S = S ; res -> status = SC_OK ; res -> outputbuffer = StringBuffer_create ( 256 ) ; res -> is_committed = false ; res -> protocol = SERVER_PROTOCOL ; res -> status_msg = get_status_string ( SC_OK ) ; <S2SV_StartBug> return res ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> SC_OK ) ; Util_getToken ( res -> token ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static TX_SIZE read_tx_size ( VP9_COMMON * cm , MACROBLOCKD * xd , TX_MODE tx_mode , <S2SV_EndBug> <S2SV_StartBug> BLOCK_SIZE bsize , int allow_select , vp9_reader * r ) { <S2SV_EndBug> const TX_SIZE max_tx_size = max_txsize_lookup [ bsize ] ; if ( allow_select && tx_mode == TX_MODE_SELECT && bsize >= BLOCK_8X8 ) return read_selected_tx_size ( cm , xd , max_tx_size , r ) ; else return MIN ( max_tx_size , tx_mode_to_biggest_tx_size [ tx_mode ] ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * xd , <S2SV_ModEnd> int allow_select , <S2SV_ModStart> int allow_select , vpx_reader <S2SV_ModEnd> * r ) <S2SV_ModStart> r ) { TX_MODE tx_mode = cm -> tx_mode ; BLOCK_SIZE bsize = xd -> mi [ 0 ] -> mbmi . sb_type ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1957\n\n```\nCWE-264 static struct mount * clone_mnt ( struct mount * old , struct dentry * root , int flag ) { struct super_block * sb = old -> mnt . mnt_sb ; struct mount * mnt ; int err ; mnt = alloc_vfsmnt ( old -> mnt_devname ) ; if ( ! mnt ) return ERR_PTR ( - ENOMEM ) ; if ( flag & ( CL_SLAVE | CL_PRIVATE | CL_SHARED_TO_SLAVE ) ) mnt -> mnt_group_id = 0 ; else mnt -> mnt_group_id = old -> mnt_group_id ; if ( ( flag & CL_MAKE_SHARED ) && ! mnt -> mnt_group_id ) { err = mnt_alloc_group_id ( mnt ) ; if ( err ) goto out_free ; } mnt -> mnt . mnt_flags = old -> mnt . mnt_flags & ~ MNT_WRITE_HOLD ; <S2SV_StartBug> atomic_inc ( & sb -> s_active ) ; <S2SV_EndBug> mnt -> mnt . mnt_sb = sb ; mnt -> mnt . mnt_root = dget ( root ) ; mnt -> mnt_mountpoint = mnt -> mnt . mnt_root ; mnt -> mnt_parent = mnt ; br_write_lock ( & vfsmount_lock ) ; list_add_tail ( & mnt -> mnt_instance , & sb -> s_mounts ) ; br_write_unlock ( & vfsmount_lock ) ; if ( ( flag & CL_SLAVE ) || ( ( flag & CL_SHARED_TO_SLAVE ) && IS_MNT_SHARED ( old ) ) ) { list_add ( & mnt -> mnt_slave , & old -> mnt_slave_list ) ; mnt -> mnt_master = old ; CLEAR_MNT_SHARED ( mnt ) ; } else if ( ! ( flag & CL_PRIVATE ) ) { if ( ( flag & CL_MAKE_SHARED ) || IS_MNT_SHARED ( old ) ) list_add ( & mnt -> mnt_share , & old -> mnt_share ) ; if ( IS_MNT_SLAVE ( old ) ) list_add ( & mnt -> mnt_slave , & old -> mnt_slave ) ; mnt -> mnt_master = old -> mnt_master ; } if ( flag & CL_MAKE_SHARED ) set_mnt_shared ( mnt ) ; if ( flag & CL_EXPIRE ) { if ( ! list_empty ( & old -> mnt_expire ) ) list_add ( & mnt -> mnt_expire , & old -> mnt_expire ) ; } return mnt ; out_free : free_vfsmnt ( mnt ) ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ~ MNT_WRITE_HOLD ; if ( ( flag & CL_UNPRIVILEGED ) && ( mnt -> mnt . mnt_flags & MNT_READONLY ) ) mnt -> mnt . mnt_flags |= MNT_LOCK_READONLY ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15861\n\n```\nCWE-59 int add_mibdir ( const char * dirname ) { <S2SV_StartBug> FILE * ip ; <S2SV_EndBug> const char * oldFile = File ; char * * filenames ; int count = 0 ; int filename_count , i ; <S2SV_StartBug> # if ! ( defined ( WIN32 ) || defined ( cygwin ) ) <S2SV_EndBug> char * token ; char space ; char newline ; struct stat dir_stat , idx_stat ; char tmpstr [ 300 ] ; char tmpstr1 [ 300 ] ; # endif DEBUGMSGTL ( ( \"parse-mibs\" , \"Scanning<S2SV_blank>directory<S2SV_blank>%s\\\\n\" , dirname ) ) ; <S2SV_StartBug> # if ! ( defined ( WIN32 ) || defined ( cygwin ) ) <S2SV_EndBug> token = netsnmp_mibindex_lookup ( dirname ) ; if ( token && stat ( token , & idx_stat ) == 0 && stat ( dirname , & dir_stat ) == 0 ) { if ( dir_stat . st_mtime < idx_stat . st_mtime ) { DEBUGMSGTL ( ( \"parse-mibs\" , \"The<S2SV_blank>index<S2SV_blank>is<S2SV_blank>good\\\\n\" ) ) ; if ( ( ip = fopen ( token , \"r\" ) ) != NULL ) { fgets ( tmpstr , sizeof ( tmpstr ) , ip ) ; while ( fscanf ( ip , \"%127s%c%299[^\\\\n]%c\" , token , & space , tmpstr , & newline ) == 4 ) { if ( space != '<S2SV_blank>' || newline != '\\\\n' ) { snmp_log ( LOG_ERR , \"add_mibdir:<S2SV_blank>strings<S2SV_blank>scanned<S2SV_blank>in<S2SV_blank>from<S2SV_blank>%s/%s<S2SV_blank>\" \"are<S2SV_blank>too<S2SV_blank>large.<S2SV_blank><S2SV_blank>count<S2SV_blank>=<S2SV_blank>%d\\\\n<S2SV_blank>\" , dirname , \".index\" , count ) ; break ; } snprintf ( tmpstr1 , sizeof ( tmpstr1 ) , \"%s/%s\" , dirname , tmpstr ) ; tmpstr1 [ sizeof ( tmpstr1 ) - 1 ] = 0 ; new_module ( token , tmpstr1 ) ; count ++ ; } fclose ( ip ) ; return count ; } else DEBUGMSGTL ( ( \"parse-mibs\" , \"Can\\'t<S2SV_blank>read<S2SV_blank>index\\\\n\" ) ) ; } else DEBUGMSGTL ( ( \"parse-mibs\" , \"Index<S2SV_blank>outdated\\\\n\" ) ) ; } else DEBUGMSGTL ( ( \"parse-mibs\" , \"No<S2SV_blank>index\\\\n\" ) ) ; # endif filename_count = scan_directory ( & filenames , dirname ) ; if ( filename_count >= 0 ) { <S2SV_StartBug> ip = netsnmp_mibindex_new ( dirname ) ; <S2SV_EndBug> for ( i = 0 ; i < filename_count ; i ++ ) { <S2SV_StartBug> if ( add_mibfile ( filenames [ i ] , strrchr ( filenames [ i ] , '/' ) , ip ) == 0 ) <S2SV_EndBug> count ++ ; free ( filenames [ i ] ) ; } <S2SV_StartBug> File = oldFile ; <S2SV_EndBug> if ( ip ) fclose ( ip ) ; free ( filenames ) ; return ( count ) ; } else DEBUGMSGTL ( ( \"parse-mibs\" , \"cannot<S2SV_blank>open<S2SV_blank>MIB<S2SV_blank>directory<S2SV_blank>%s\\\\n\" , dirname ) ) ; return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dirname ) { <S2SV_ModEnd> const char * <S2SV_ModStart> , i ; <S2SV_ModEnd> DEBUGMSGTL ( ( <S2SV_ModStart> ) ) ; <S2SV_ModEnd> filename_count = scan_directory <S2SV_ModStart> 0 ) { <S2SV_ModEnd> for ( i <S2SV_ModStart> , '/' ) <S2SV_ModEnd> ) == 0 <S2SV_ModStart> File = oldFile <S2SV_ModEnd> ; free (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14058\n\n```\nCWE-835 static int read_data ( void * opaque , uint8_t * buf , int buf_size ) { struct playlist * v = opaque ; HLSContext * c = v -> parent -> priv_data ; int ret , i ; <S2SV_StartBug> int just_opened = 0 ; <S2SV_EndBug> restart : if ( ! v -> needed ) return AVERROR_EOF ; if ( ! v -> input ) { int64_t reload_interval ; struct segment * seg ; if ( v -> ctx && v -> ctx -> nb_streams ) { v -> needed = 0 ; for ( i = 0 ; i < v -> n_main_streams ; i ++ ) { if ( v -> main_streams [ i ] -> discard < AVDISCARD_ALL ) { v -> needed = 1 ; break ; } } } if ( ! v -> needed ) { av_log ( v -> parent , AV_LOG_INFO , \"No<S2SV_blank>longer<S2SV_blank>receiving<S2SV_blank>playlist<S2SV_blank>%d\\\\n\" , v -> index ) ; return AVERROR_EOF ; } reload_interval = default_reload_interval ( v ) ; reload : <S2SV_StartBug> if ( ! v -> finished && <S2SV_EndBug> av_gettime_relative ( ) - v -> last_load_time >= reload_interval ) { if ( ( ret = parse_playlist ( c , v -> url , v , NULL ) ) < 0 ) { av_log ( v -> parent , AV_LOG_WARNING , \"Failed<S2SV_blank>to<S2SV_blank>reload<S2SV_blank>playlist<S2SV_blank>%d\\\\n\" , v -> index ) ; return ret ; } reload_interval = v -> target_duration / 2 ; } if ( v -> cur_seq_no < v -> start_seq_no ) { av_log ( NULL , AV_LOG_WARNING , \"skipping<S2SV_blank>%d<S2SV_blank>segments<S2SV_blank>ahead,<S2SV_blank>expired<S2SV_blank>from<S2SV_blank>playlists\\\\n\" , v -> start_seq_no - v -> cur_seq_no ) ; v -> cur_seq_no = v -> start_seq_no ; } if ( v -> cur_seq_no >= v -> start_seq_no + v -> n_segments ) { if ( v -> finished ) return AVERROR_EOF ; while ( av_gettime_relative ( ) - v -> last_load_time < reload_interval ) { if ( ff_check_interrupt ( c -> interrupt_callback ) ) return AVERROR_EXIT ; av_usleep ( 100 * 1000 ) ; } goto reload ; } seg = current_segment ( v ) ; ret = update_init_section ( v , seg ) ; if ( ret ) return ret ; ret = open_input ( c , v , seg ) ; if ( ret < 0 ) { if ( ff_check_interrupt ( c -> interrupt_callback ) ) return AVERROR_EXIT ; av_log ( v -> parent , AV_LOG_WARNING , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>segment<S2SV_blank>of<S2SV_blank>playlist<S2SV_blank>%d\\\\n\" , v -> index ) ; v -> cur_seq_no += 1 ; goto reload ; } just_opened = 1 ; } if ( v -> init_sec_buf_read_offset < v -> init_sec_data_len ) { int copy_size = FFMIN ( v -> init_sec_data_len - v -> init_sec_buf_read_offset , buf_size ) ; memcpy ( buf , v -> init_sec_buf , copy_size ) ; v -> init_sec_buf_read_offset += copy_size ; return copy_size ; } ret = read_from_url ( v , current_segment ( v ) , buf , buf_size , READ_NORMAL ) ; if ( ret > 0 ) { if ( just_opened && v -> is_id3_timestamped != 0 ) { intercept_id3 ( v , buf , buf_size , & ret ) ; } return ret ; } ff_format_io_close ( v -> parent , & v -> input ) ; v -> cur_seq_no ++ ; c -> cur_seq_no = v -> cur_seq_no ; goto restart ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int just_opened = 0 ; int reload_count <S2SV_ModStart> ; reload : reload_count ++ ; if ( reload_count > c -> max_reload ) return AVERROR_EOF ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-862(缺少授权)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5985\n\n```\nCWE-862 static int rename_in_ns ( int pid , char * oldname , char * * newnamep ) { <S2SV_StartBug> int fd = - 1 , ofd = - 1 , ret , ifindex = - 1 ; <S2SV_EndBug> bool grab_newname = false ; ofd = lxc_preserve_ns ( getpid ( ) , \"net\" ) ; if ( ofd < 0 ) { <S2SV_StartBug> fprintf ( stderr , \"Failed<S2SV_blank>opening<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>path<S2SV_blank>for<S2SV_blank>\\'%d\\'.\" , getpid ( ) ) ; <S2SV_EndBug> <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } fd = lxc_preserve_ns ( pid , \"net\" ) ; if ( fd < 0 ) { <S2SV_StartBug> fprintf ( stderr , \"Failed<S2SV_blank>opening<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>path<S2SV_blank>for<S2SV_blank>\\'%d\\'.\" , pid ) ; <S2SV_EndBug> <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } <S2SV_StartBug> if ( setns ( fd , 0 ) < 0 ) { <S2SV_EndBug> fprintf ( stderr , \"setns<S2SV_blank>to<S2SV_blank>container<S2SV_blank>network<S2SV_blank>namespace\\\\n\" ) ; goto out_err ; } <S2SV_StartBug> close ( fd ) ; fd = - 1 ; <S2SV_EndBug> if ( ! * newnamep ) { grab_newname = true ; * newnamep = VETH_DEF_NAME ; <S2SV_StartBug> if ( ! ( ifindex = if_nametoindex ( oldname ) ) ) { <S2SV_EndBug> fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>netdev<S2SV_blank>index\\\\n\" ) ; goto out_err ; } } <S2SV_StartBug> if ( ( ret = lxc_netdev_rename_by_name ( oldname , * newnamep ) ) < 0 ) { <S2SV_EndBug> fprintf ( stderr , \"Error<S2SV_blank>%d<S2SV_blank>renaming<S2SV_blank>netdev<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>container\\\\n\" , ret , oldname , * newnamep ) ; goto out_err ; } if ( grab_newname ) { <S2SV_StartBug> char ifname [ IFNAMSIZ ] , * namep = ifname ; <S2SV_EndBug> if ( ! if_indextoname ( ifindex , namep ) ) { <S2SV_StartBug> fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>new<S2SV_blank>netdev<S2SV_blank>name\\\\n\" ) ; <S2SV_EndBug> goto out_err ; } * newnamep = strdup ( namep ) ; if ( ! * newnamep ) <S2SV_StartBug> goto out_err ; <S2SV_EndBug> } <S2SV_StartBug> if ( setns ( ofd , 0 ) < 0 ) { <S2SV_EndBug> fprintf ( stderr , \"Error<S2SV_blank>returning<S2SV_blank>to<S2SV_blank>original<S2SV_blank>netns\\\\n\" ) ; close ( ofd ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } close ( ofd ) ; return 0 ; out_err : if ( ofd >= 0 ) close ( ofd ) ; if ( setns ( ofd , 0 ) < 0 ) fprintf ( stderr , \"Error<S2SV_blank>returning<S2SV_blank>to<S2SV_blank>original<S2SV_blank>network<S2SV_blank>namespace\\\\n\" ) ; if ( fd >= 0 ) close ( fd ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> newnamep ) { uid_t ruid , suid , euid ; int fret = - 1 ; int fd = - 1 , ifindex <S2SV_ModEnd> = - 1 <S2SV_ModStart> 1 , ret <S2SV_ModEnd> ; bool grab_newname <S2SV_ModStart> 0 ) { usernic_error ( <S2SV_ModEnd> \"Failed<S2SV_blank>opening<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>path<S2SV_blank>for<S2SV_blank>\\'%d\\'.\" , getpid <S2SV_ModStart> ) ; return fret <S2SV_ModEnd> ; } fd <S2SV_ModStart> 0 ) { usernic_error ( <S2SV_ModEnd> \"Failed<S2SV_blank>opening<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>path<S2SV_blank>for<S2SV_blank>\\'%d\\'.\" , pid <S2SV_ModStart> pid ) ; goto do_partial_cleanup ; } ret = getresuid ( & ruid , & euid , & suid ) ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>retrieve<S2SV_blank>real,<S2SV_blank>effective,<S2SV_blank>and<S2SV_blank>saved<S2SV_blank>\" \"user<S2SV_blank>IDs:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; goto do_partial_cleanup ; } ret = <S2SV_ModEnd> setns ( fd <S2SV_ModStart> ( fd , CLONE_NEWNET ) ; <S2SV_ModEnd> close ( fd <S2SV_ModStart> fd ) ; fd = - 1 ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>setns()<S2SV_blank>to<S2SV_blank>the<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>of<S2SV_blank>\" \"the<S2SV_blank>container<S2SV_blank>with<S2SV_blank>PID<S2SV_blank>%d:<S2SV_blank>%s.\\\\n\" , pid , strerror ( errno ) ) ; goto do_partial_cleanup ; } ret = setresuid ( ruid , ruid , 0 ) ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>drop<S2SV_blank>privilege<S2SV_blank>by<S2SV_blank>setting<S2SV_blank>effective<S2SV_blank>\" \"user<S2SV_blank>id<S2SV_blank>and<S2SV_blank>real<S2SV_blank>user<S2SV_blank>id<S2SV_blank>to<S2SV_blank>%d,<S2SV_blank>and<S2SV_blank>saved<S2SV_blank>user<S2SV_blank>\" \"ID<S2SV_blank>to<S2SV_blank>0:<S2SV_blank>%s.\\\\n\" , ruid , strerror ( errno ) ) ; goto do_full_cleanup ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> = VETH_DEF_NAME ; ifindex = if_nametoindex ( oldname ) ; <S2SV_ModStart> if ( ! ifindex ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>netdev<S2SV_blank>index:<S2SV_blank>%s.\\\\n\" , strerror ( errno ) ) ; goto do_full_cleanup ; } } ret = lxc_netdev_rename_by_name ( oldname , * newnamep ) ; if ( ret < 0 ) { usernic_error ( \"Error<S2SV_blank>%d<S2SV_blank>renaming<S2SV_blank>netdev<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>container.\\\\n\" , ret , <S2SV_ModEnd> oldname , * <S2SV_ModStart> * newnamep ) ; goto do_full_cleanup <S2SV_ModEnd> ; } if <S2SV_ModStart> [ IFNAMSIZ ] ; char <S2SV_ModEnd> * namep = <S2SV_ModStart> ) ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>new<S2SV_blank>netdev<S2SV_blank>name:<S2SV_blank>%s.\\\\n\" , strerror ( errno ) ) ; goto do_full_cleanup <S2SV_ModEnd> ; } * <S2SV_ModStart> newnamep ) goto do_full_cleanup ; } fret = 0 ; do_full_cleanup : ret = setresuid ( ruid , euid , suid ) ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>restore<S2SV_blank>privilege<S2SV_blank>by<S2SV_blank>setting<S2SV_blank>effective<S2SV_blank>\" \"user<S2SV_blank>id<S2SV_blank>to<S2SV_blank>%d,<S2SV_blank>real<S2SV_blank>user<S2SV_blank>id<S2SV_blank>to<S2SV_blank>%d,<S2SV_blank>and<S2SV_blank>saved<S2SV_blank>user<S2SV_blank>\" \"ID<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>%s.\\\\n\" , ruid , euid , suid , strerror ( errno ) ) ; fret = - 1 ; } ret = <S2SV_ModEnd> setns ( ofd <S2SV_ModStart> ( ofd , CLONE_NEWNET ) ; if ( ret < 0 ) { usernic_error ( \"Failed<S2SV_blank>to<S2SV_blank>setns()<S2SV_blank>to<S2SV_blank>original<S2SV_blank>network<S2SV_blank>namespace<S2SV_blank>\" \"of<S2SV_blank>PID<S2SV_blank>%d:<S2SV_blank>%s.\\\\n\" , ofd , strerror ( errno ) ) ; fret = - 1 ; } do_partial_cleanup : if ( fd >= 0 ) close ( fd ) ; close ( <S2SV_ModEnd> ofd ) ; <S2SV_ModStart> ) ; return fret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0381\n\n```\nCWE-190 void silk_NLSF_stabilize ( opus_int16 * NLSF_Q15 , const opus_int16 * NDeltaMin_Q15 , const opus_int L ) { opus_int i , I = 0 , k , loops ; opus_int16 center_freq_Q15 ; opus_int32 diff_Q15 , min_diff_Q15 , min_center_Q15 , max_center_Q15 ; silk_assert ( NDeltaMin_Q15 [ L ] >= 1 ) ; for ( loops = 0 ; loops < MAX_LOOPS ; loops ++ ) { min_diff_Q15 = NLSF_Q15 [ 0 ] - NDeltaMin_Q15 [ 0 ] ; I = 0 ; for ( i = 1 ; i <= L - 1 ; i ++ ) { diff_Q15 = NLSF_Q15 [ i ] - ( NLSF_Q15 [ i - 1 ] + NDeltaMin_Q15 [ i ] ) ; if ( diff_Q15 < min_diff_Q15 ) { min_diff_Q15 = diff_Q15 ; I = i ; } } diff_Q15 = ( 1 << 15 ) - ( NLSF_Q15 [ L - 1 ] + NDeltaMin_Q15 [ L ] ) ; if ( diff_Q15 < min_diff_Q15 ) { min_diff_Q15 = diff_Q15 ; I = L ; } if ( min_diff_Q15 >= 0 ) { return ; } if ( I == 0 ) { NLSF_Q15 [ 0 ] = NDeltaMin_Q15 [ 0 ] ; } else if ( I == L ) { NLSF_Q15 [ L - 1 ] = ( 1 << 15 ) - NDeltaMin_Q15 [ L ] ; } else { min_center_Q15 = 0 ; for ( k = 0 ; k < I ; k ++ ) { min_center_Q15 += NDeltaMin_Q15 [ k ] ; } min_center_Q15 += silk_RSHIFT ( NDeltaMin_Q15 [ I ] , 1 ) ; max_center_Q15 = 1 << 15 ; for ( k = L ; k > I ; k -- ) { max_center_Q15 -= NDeltaMin_Q15 [ k ] ; } max_center_Q15 -= silk_RSHIFT ( NDeltaMin_Q15 [ I ] , 1 ) ; center_freq_Q15 = ( opus_int16 ) silk_LIMIT_32 ( silk_RSHIFT_ROUND ( ( opus_int32 ) NLSF_Q15 [ I - 1 ] + ( opus_int32 ) NLSF_Q15 [ I ] , 1 ) , min_center_Q15 , max_center_Q15 ) ; NLSF_Q15 [ I - 1 ] = center_freq_Q15 - silk_RSHIFT ( NDeltaMin_Q15 [ I ] , 1 ) ; NLSF_Q15 [ I ] = NLSF_Q15 [ I - 1 ] + NDeltaMin_Q15 [ I ] ; } } if ( loops == MAX_LOOPS ) { silk_insertion_sort_increasing_all_values_int16 ( & NLSF_Q15 [ 0 ] , L ) ; NLSF_Q15 [ 0 ] = silk_max_int ( NLSF_Q15 [ 0 ] , NDeltaMin_Q15 [ 0 ] ) ; for ( i = 1 ; i < L ; i ++ ) <S2SV_StartBug> NLSF_Q15 [ i ] = silk_max_int ( NLSF_Q15 [ i ] , NLSF_Q15 [ i - 1 ] + NDeltaMin_Q15 [ i ] ) ; <S2SV_EndBug> NLSF_Q15 [ L - 1 ] = silk_min_int ( NLSF_Q15 [ L - 1 ] , ( 1 << 15 ) - NDeltaMin_Q15 [ L ] ) ; for ( i = L - 2 ; i >= 0 ; i -- ) NLSF_Q15 [ i ] = silk_min_int ( NLSF_Q15 [ i ] , NLSF_Q15 [ i + 1 ] - NDeltaMin_Q15 [ i + 1 ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ] , silk_ADD_SAT16 ( NLSF_Q15 [ i - 1 ] , NDeltaMin_Q15 [ i ] ) <S2SV_ModEnd> ) ; NLSF_Q15\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_dequant_idct_add_c ( short * input , short * dq , unsigned char * dest , int stride ) { int i ; for ( i = 0 ; i < 16 ; i ++ ) { input [ i ] = dq [ i ] * input [ i ] ; } vp8_short_idct4x4llm_c ( input , dest , stride , dest , stride ) ; <S2SV_StartBug> vpx_memset ( input , 0 , 32 ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stride ) ; memset <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 bool_t enc624j600IrqHandler ( NetInterface * interface ) { bool_t flag ; uint16_t status ; flag = FALSE ; <S2SV_StartBug> enc624j600ClearBit ( interface , ENC624J600_REG_EIE , EIE_INTIE ) ; <S2SV_EndBug> <S2SV_StartBug> status = enc624j600ReadReg ( interface , ENC624J600_REG_EIR ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ( status & EIR_LINKIF ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc624j600ClearBit ( interface , ENC624J600_REG_EIE , EIE_LINKIE ) ; <S2SV_EndBug> interface -> nicEvent = TRUE ; flag |= osSetEventFromIsr ( & netEvent ) ; } <S2SV_StartBug> if ( ( status & EIR_PKTIF ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc624j600ClearBit ( interface , ENC624J600_REG_EIE , EIE_PKTIE ) ; <S2SV_EndBug> interface -> nicEvent = TRUE ; flag |= osSetEventFromIsr ( & netEvent ) ; } <S2SV_StartBug> if ( ( status & ( EIR_TXIF | EIR_TXABTIF ) ) != 0 ) <S2SV_EndBug> { <S2SV_StartBug> enc624j600ClearBit ( interface , ENC624J600_REG_EIR , EIR_TXIF | EIR_TXABTIF ) ; <S2SV_EndBug> flag |= osSetEventFromIsr ( & interface -> nicTxEvent ) ; } <S2SV_StartBug> enc624j600SetBit ( interface , ENC624J600_REG_EIE , EIE_INTIE ) ; <S2SV_EndBug> return flag ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( interface , ENC624J600_EIE , ENC624J600_EIE_INTIE <S2SV_ModEnd> ) ; status <S2SV_ModStart> ( interface , ENC624J600_EIR <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( status & ENC624J600_EIR_LINKIF <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC624J600_EIE , ENC624J600_EIE_LINKIE <S2SV_ModEnd> ) ; interface <S2SV_ModStart> ( status & ENC624J600_EIR_PKTIF <S2SV_ModEnd> ) != 0 <S2SV_ModStart> ( interface , ENC624J600_EIE , ENC624J600_EIE_PKTIE <S2SV_ModEnd> ) ; interface <S2SV_ModStart> status & ( ENC624J600_EIR_TXIF | ENC624J600_EIR_TXABTIF <S2SV_ModEnd> ) ) != <S2SV_ModStart> ( interface , ENC624J600_EIR , ENC624J600_EIR_TXIF | ENC624J600_EIR_TXABTIF <S2SV_ModEnd> ) ; flag <S2SV_ModStart> ( interface , ENC624J600_EIE , ENC624J600_EIE_INTIE <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-5232\n\n```\nCWE-362 hsm_com_errno_t unix_client_connect ( hsm_com_client_hdl_t * hdl ) { int fd , len ; struct sockaddr_un unix_addr ; <S2SV_StartBug> if ( ( fd = socket ( AF_UNIX , SOCK_STREAM , 0 ) ) < 0 ) <S2SV_EndBug> { return HSM_COM_ERROR ; } memset ( & unix_addr , 0 , sizeof ( unix_addr ) ) ; unix_addr . sun_family = AF_UNIX ; if ( strlen ( hdl -> c_path ) >= sizeof ( unix_addr . sun_path ) ) { <S2SV_StartBug> close ( fd ) ; <S2SV_EndBug> return HSM_COM_PATH_ERR ; } snprintf ( unix_addr . sun_path , sizeof ( unix_addr . sun_path ) , \"%s\" , hdl -> c_path ) ; len = SUN_LEN ( & unix_addr ) ; unlink ( unix_addr . sun_path ) ; if ( bind ( fd , ( struct sockaddr * ) & unix_addr , len ) < 0 ) { <S2SV_StartBug> unlink ( hdl -> c_path ) ; <S2SV_EndBug> close ( fd ) ; return HSM_COM_BIND_ERR ; } if ( chmod ( unix_addr . sun_path , S_IRWXU ) < 0 ) { <S2SV_StartBug> unlink ( hdl -> c_path ) ; <S2SV_EndBug> close ( fd ) ; return HSM_COM_CHMOD_ERR ; } memset ( & unix_addr , 0 , sizeof ( unix_addr ) ) ; unix_addr . sun_family = AF_UNIX ; strncpy ( unix_addr . sun_path , hdl -> s_path , sizeof ( unix_addr . sun_path ) ) ; unix_addr . sun_path [ sizeof ( unix_addr . sun_path ) - 1 ] = 0 ; len = SUN_LEN ( & unix_addr ) ; if ( connect ( fd , ( struct sockaddr * ) & unix_addr , len ) < 0 ) { <S2SV_StartBug> unlink ( hdl -> c_path ) ; <S2SV_EndBug> close ( fd ) ; return HSM_COM_CONX_ERR ; } hdl -> client_fd = fd ; hdl -> client_state = HSM_COM_C_STATE_CT ; if ( unix_sck_send_conn ( hdl , 2 ) != HSM_COM_OK ) { hdl -> client_state = HSM_COM_C_STATE_IN ; <S2SV_StartBug> return HSM_COM_SEND_ERR ; <S2SV_EndBug> } return HSM_COM_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sockaddr_un unix_addr ; hsm_com_errno_t res = HSM_COM_OK ; <S2SV_ModStart> ) ) { res = HSM_COM_PATH_ERR ; goto cleanup <S2SV_ModEnd> ; } snprintf <S2SV_ModStart> 0 ) { res = HSM_COM_BIND_ERR ; goto cleanup ; <S2SV_ModEnd> } if ( <S2SV_ModStart> 0 ) { res = HSM_COM_CHMOD_ERR ; goto cleanup <S2SV_ModEnd> ; } memset <S2SV_ModStart> 0 ) { res = HSM_COM_CONX_ERR ; goto cleanup <S2SV_ModEnd> ; } hdl <S2SV_ModStart> = HSM_COM_C_STATE_IN ; res = HSM_COM_SEND_ERR ; } return res ; cleanup : close ( fd ) ; return res <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 static struct ipv6_txoptions * ipv6_update_options ( struct sock * sk , struct ipv6_txoptions * opt ) { if ( inet_sk ( sk ) -> is_icsk ) { if ( opt && ! ( ( 1 << sk -> sk_state ) & ( TCPF_LISTEN | TCPF_CLOSE ) ) && inet_sk ( sk ) -> inet_daddr != LOOPBACK4_IPV6 ) { struct inet_connection_sock * icsk = inet_csk ( sk ) ; icsk -> icsk_ext_hdr_len = opt -> opt_flen + opt -> opt_nflen ; icsk -> icsk_sync_mss ( sk , icsk -> icsk_pmtu_cookie ) ; } } <S2SV_StartBug> opt = xchg ( & inet6_sk ( sk ) -> opt , opt ) ; <S2SV_EndBug> sk_dst_reset ( sk ) ; return opt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = xchg ( ( __force struct ipv6_txoptions * * )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13304\n\n```\nCWE-617 static int er_supported ( ERContext * s ) { if ( s -> avctx -> hwaccel && s -> avctx -> hwaccel -> decode_slice || ! s -> cur_pic . f || <S2SV_StartBug> s -> cur_pic . field_picture || <S2SV_EndBug> s -> avctx -> profile == FF_PROFILE_MPEG4_SIMPLE_STUDIO ) return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cur_pic . field_picture <S2SV_ModEnd> ) return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5548\n\n```\nCWE-119 static int atusb_get_and_show_build ( struct atusb * atusb ) { struct usb_device * usb_dev = atusb -> usb_dev ; <S2SV_StartBug> char build [ ATUSB_BUILD_SIZE + 1 ] ; <S2SV_EndBug> <S2SV_StartBug> int ret ; <S2SV_EndBug> ret = atusb_control_msg ( atusb , usb_rcvctrlpipe ( usb_dev , 0 ) , ATUSB_BUILD , ATUSB_REQ_FROM_DEV , 0 , 0 , build , ATUSB_BUILD_SIZE , 1000 ) ; if ( ret >= 0 ) { build [ ret ] = 0 ; dev_info ( & usb_dev -> dev , \"Firmware:<S2SV_blank>build<S2SV_blank>%s\\\\n\" , build ) ; } <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> usb_dev ; char * build <S2SV_ModEnd> ; int ret <S2SV_ModStart> ; int ret ; build = kmalloc ( ATUSB_BUILD_SIZE + 1 , GFP_KERNEL ) ; if ( ! build ) return - ENOMEM <S2SV_ModStart> ) ; } kfree ( build ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5195\n\n```\nCWE-362 static struct page * follow_page_pte ( struct vm_area_struct * vma , unsigned long address , pmd_t * pmd , unsigned int flags ) { struct mm_struct * mm = vma -> vm_mm ; struct dev_pagemap * pgmap = NULL ; struct page * page ; spinlock_t * ptl ; pte_t * ptep , pte ; retry : if ( unlikely ( pmd_bad ( * pmd ) ) ) return no_page_table ( vma , flags ) ; ptep = pte_offset_map_lock ( mm , pmd , address , & ptl ) ; pte = * ptep ; if ( ! pte_present ( pte ) ) { swp_entry_t entry ; if ( likely ( ! ( flags & FOLL_MIGRATION ) ) ) goto no_page ; if ( pte_none ( pte ) ) goto no_page ; entry = pte_to_swp_entry ( pte ) ; if ( ! is_migration_entry ( entry ) ) goto no_page ; pte_unmap_unlock ( ptep , ptl ) ; migration_entry_wait ( mm , pmd , address ) ; goto retry ; } if ( ( flags & FOLL_NUMA ) && pte_protnone ( pte ) ) goto no_page ; <S2SV_StartBug> if ( ( flags & FOLL_WRITE ) && ! pte_write ( pte ) ) { <S2SV_EndBug> pte_unmap_unlock ( ptep , ptl ) ; return NULL ; } page = vm_normal_page ( vma , address , pte ) ; if ( ! page && pte_devmap ( pte ) && ( flags & FOLL_GET ) ) { pgmap = get_dev_pagemap ( pte_pfn ( pte ) , NULL ) ; if ( pgmap ) page = pte_page ( pte ) ; else goto no_page ; } else if ( unlikely ( ! page ) ) { if ( flags & FOLL_DUMP ) { page = ERR_PTR ( - EFAULT ) ; goto out ; } if ( is_zero_pfn ( pte_pfn ( pte ) ) ) { page = pte_page ( pte ) ; } else { int ret ; ret = follow_pfn_pte ( vma , address , ptep , flags ) ; page = ERR_PTR ( ret ) ; goto out ; } } if ( flags & FOLL_SPLIT && PageTransCompound ( page ) ) { int ret ; get_page ( page ) ; pte_unmap_unlock ( ptep , ptl ) ; lock_page ( page ) ; ret = split_huge_page ( page ) ; unlock_page ( page ) ; put_page ( page ) ; if ( ret ) return ERR_PTR ( ret ) ; goto retry ; } if ( flags & FOLL_GET ) { get_page ( page ) ; if ( pgmap ) { put_dev_pagemap ( pgmap ) ; pgmap = NULL ; } } if ( flags & FOLL_TOUCH ) { if ( ( flags & FOLL_WRITE ) && ! pte_dirty ( pte ) && ! PageDirty ( page ) ) set_page_dirty ( page ) ; mark_page_accessed ( page ) ; } if ( ( flags & FOLL_MLOCK ) && ( vma -> vm_flags & VM_LOCKED ) ) { if ( PageTransCompound ( page ) ) goto out ; if ( page -> mapping && trylock_page ( page ) ) { lru_add_drain ( ) ; mlock_vma_page ( page ) ; unlock_page ( page ) ; } } out : pte_unmap_unlock ( ptep , ptl ) ; return page ; no_page : pte_unmap_unlock ( ptep , ptl ) ; if ( ! pte_none ( pte ) ) return NULL ; return no_page_table ( vma , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) && ! can_follow_write_pte ( pte , flags <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static node * parsetok ( struct tok_state * tok , grammar * g , int start , perrdetail * err_ret , int * flags ) { parser_state * ps ; node * n ; int started = 0 ; <S2SV_StartBug> int col_offset , end_col_offset ; <S2SV_EndBug> if ( ( ps = PyParser_New ( g , start ) ) == NULL ) { err_ret -> error = E_NOMEM ; PyTokenizer_Free ( tok ) ; return NULL ; } # ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD if ( * flags & PyPARSE_BARRY_AS_BDFL ) <S2SV_StartBug> ps -> p_flags |= CO_FUTURE_BARRY_AS_BDFL ; <S2SV_EndBug> # endif for ( ; ; ) { char * a , * b ; int type ; size_t len ; char * str ; col_offset = - 1 ; int lineno ; const char * line_start ; type = PyTokenizer_Get ( tok , & a , & b ) ; if ( type == ERRORTOKEN ) { err_ret -> error = tok -> done ; break ; } if ( type == ENDMARKER && started ) { type = NEWLINE ; started = 0 ; if ( tok -> indent && ! ( * flags & PyPARSE_DONT_IMPLY_DEDENT ) ) { tok -> pendin = - tok -> indent ; tok -> indent = 0 ; } } else started = 1 ; len = ( a != NULL && b != NULL ) ? b - a : 0 ; str = ( char * ) PyObject_MALLOC ( len + 1 ) ; if ( str == NULL ) { err_ret -> error = E_NOMEM ; break ; } if ( len > 0 ) strncpy ( str , a , len ) ; str [ len ] = '\\\\0' ; # ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD if ( type == NOTEQUAL ) { if ( ! ( ps -> p_flags & CO_FUTURE_BARRY_AS_BDFL ) && strcmp ( str , \"!=\" ) ) { PyObject_FREE ( str ) ; err_ret -> error = E_SYNTAX ; break ; } else if ( ( ps -> p_flags & CO_FUTURE_BARRY_AS_BDFL ) && strcmp ( str , \"<>\" ) ) { PyObject_FREE ( str ) ; err_ret -> expected = NOTEQUAL ; err_ret -> error = E_SYNTAX ; break ; } } # endif lineno = type == STRING ? tok -> first_lineno : tok -> lineno ; line_start = type == STRING ? tok -> multi_line_start : tok -> line_start ; if ( a != NULL && a >= line_start ) { col_offset = Py_SAFE_DOWNCAST ( a - line_start , intptr_t , int ) ; } else { col_offset = - 1 ; } if ( b != NULL && b >= tok -> line_start ) { end_col_offset = Py_SAFE_DOWNCAST ( b - tok -> line_start , intptr_t , int ) ; } else { end_col_offset = - 1 ; } <S2SV_StartBug> if ( ( err_ret -> error = <S2SV_EndBug> PyParser_AddToken ( ps , ( int ) type , str , lineno , col_offset , tok -> lineno , end_col_offset , & ( err_ret -> expected ) ) ) != E_OK ) { if ( err_ret -> error != E_DONE ) { PyObject_FREE ( str ) ; err_ret -> token = type ; } break ; } } if ( err_ret -> error == E_DONE ) { n = ps -> p_tree ; <S2SV_StartBug> ps -> p_tree = NULL ; <S2SV_EndBug> # ifndef PGEN if ( start == single_input ) { char * cur = tok -> cur ; char c = * tok -> cur ; for ( ; ; ) { while ( c == '<S2SV_blank>' || c == '\\\\t' || c == '\\\\n' || c == '\\\\014' ) c = * ++ cur ; if ( ! c ) break ; if ( c != '#' ) { err_ret -> error = E_BADSINGLE ; PyNode_Free ( n ) ; n = NULL ; break ; } while ( c && c != '\\\\n' ) c = * ++ cur ; } } # endif } else n = NULL ; # ifdef PY_PARSER_REQUIRES_FUTURE_KEYWORD * flags = ps -> p_flags ; # endif PyParser_Delete ( ps ) ; if ( n == NULL ) { if ( tok -> done == E_EOF ) err_ret -> error = E_EOF ; err_ret -> lineno = tok -> lineno ; if ( tok -> buf != NULL ) { size_t len ; assert ( tok -> cur - tok -> buf < INT_MAX ) ; err_ret -> offset = col_offset != - 1 ? col_offset + 1 : ( ( int ) ( tok -> cur - tok -> buf ) ) ; len = tok -> inp - tok -> buf ; err_ret -> text = ( char * ) PyObject_MALLOC ( len + 1 ) ; if ( err_ret -> text != NULL ) { if ( len > 0 ) strncpy ( err_ret -> text , tok -> buf , len ) ; err_ret -> text [ len ] = '\\\\0' ; } } } else if ( tok -> encoding != NULL ) { node * r = PyNode_New ( encoding_decl ) ; if ( r ) r -> n_str = PyObject_MALLOC ( strlen ( tok -> encoding ) + 1 ) ; if ( ! r || ! r -> n_str ) { err_ret -> error = E_NOMEM ; if ( r ) PyObject_FREE ( r ) ; n = NULL ; goto done ; } strcpy ( r -> n_str , tok -> encoding ) ; PyMem_FREE ( tok -> encoding ) ; tok -> encoding = NULL ; r -> n_nchildren = 1 ; r -> n_child = n ; n = r ; } done : PyTokenizer_Free ( tok ) ; if ( n != NULL ) { _PyNode_FinalizeEndPos ( n ) ; } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , end_col_offset ; growable_int_array type_ignores ; if ( ! growable_int_array_init ( & type_ignores , 10 ) ) { err_ret -> error = E_NOMEM ; PyTokenizer_Free ( tok ) ; return NULL ; } <S2SV_ModStart> p_flags |= CO_FUTURE_BARRY_AS_BDFL ; if ( * flags & PyPARSE_TYPE_COMMENTS ) ps -> p_flags |= PyCF_TYPE_COMMENTS <S2SV_ModStart> } if ( type == TYPE_IGNORE ) { if ( ! growable_int_array_add ( & type_ignores , tok -> lineno ) ) { err_ret -> error = E_NOMEM ; break ; } continue ; } if ( <S2SV_ModStart> p_tree = NULL ; if ( n -> n_type == file_input ) { int num ; node * ch ; size_t i ; num = NCH ( n ) ; ch = CHILD ( n , num - 1 ) ; REQ ( ch , ENDMARKER ) ; for ( i = 0 ; i < type_ignores . num_items ; i ++ ) { PyNode_AddChild ( ch , TYPE_IGNORE , NULL , type_ignores . items [ i ] , 0 , type_ignores . items [ i ] , 0 ) ; } } growable_int_array_deallocate ( & type_ignores )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6308\n\n```\nCWE-190 void * <S2SV_StartBug> xmalloc ( size_t size ) <S2SV_EndBug> <S2SV_StartBug> { <S2SV_EndBug> <S2SV_StartBug> void * ptr = malloc ( size ) ; <S2SV_EndBug> if ( ! ptr && ( size != 0 ) ) { perror ( \"xmalloc:<S2SV_blank>Memory<S2SV_blank>allocation<S2SV_blank>failure\" ) ; abort ( ) ; } return ptr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> xmalloc ( size_t num , size_t <S2SV_ModStart> size ) { size_t res ; if ( check_mul_overflow ( num , size , & res ) ) abort ( ) ; <S2SV_ModStart> = malloc ( res <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3209\n\n```\nCWE-189 int do_adjtimex ( struct timex * txc ) { <S2SV_StartBug> long mtemp , save_adjust , rem ; <S2SV_EndBug> s64 freq_adj ; int result ; if ( txc -> modes && ! capable ( CAP_SYS_TIME ) ) return - EPERM ; if ( ( txc -> modes & ADJ_OFFSET_SINGLESHOT ) == ADJ_OFFSET_SINGLESHOT ) { if ( txc -> modes != ADJ_OFFSET_SINGLESHOT && txc -> modes != ADJ_OFFSET_SS_READ ) return - EINVAL ; } if ( txc -> modes != ADJ_OFFSET_SINGLESHOT && ( txc -> modes & ADJ_OFFSET ) ) if ( txc -> offset <= - MAXPHASE || txc -> offset >= MAXPHASE ) return - EINVAL ; if ( txc -> modes & ADJ_TICK ) if ( txc -> tick < 900000 / USER_HZ || txc -> tick > 1100000 / USER_HZ ) return - EINVAL ; write_seqlock_irq ( & xtime_lock ) ; result = time_state ; save_adjust = time_adjust ; # if 0 time_status &= ~ STA_CLOCKERR ; # endif if ( txc -> modes ) { if ( txc -> modes & ADJ_STATUS ) time_status = ( txc -> status & ~ STA_RONLY ) | ( time_status & STA_RONLY ) ; if ( txc -> modes & ADJ_FREQUENCY ) { if ( txc -> freq > MAXFREQ || txc -> freq < - MAXFREQ ) { result = - EINVAL ; goto leave ; } time_freq = ( ( s64 ) txc -> freq * NSEC_PER_USEC ) >> ( SHIFT_USEC - SHIFT_NSEC ) ; } if ( txc -> modes & ADJ_MAXERROR ) { if ( txc -> maxerror < 0 || txc -> maxerror >= NTP_PHASE_LIMIT ) { result = - EINVAL ; goto leave ; } time_maxerror = txc -> maxerror ; } if ( txc -> modes & ADJ_ESTERROR ) { if ( txc -> esterror < 0 || txc -> esterror >= NTP_PHASE_LIMIT ) { result = - EINVAL ; goto leave ; } time_esterror = txc -> esterror ; } if ( txc -> modes & ADJ_TIMECONST ) { if ( txc -> constant < 0 ) { result = - EINVAL ; goto leave ; } time_constant = min ( txc -> constant + 4 , ( long ) MAXTC ) ; } if ( txc -> modes & ADJ_OFFSET ) { if ( txc -> modes == ADJ_OFFSET_SINGLESHOT ) { time_adjust = txc -> offset ; } else if ( time_status & STA_PLL ) { time_offset = txc -> offset * NSEC_PER_USEC ; time_offset = min ( time_offset , ( s64 ) MAXPHASE * NSEC_PER_USEC ) ; time_offset = max ( time_offset , ( s64 ) - MAXPHASE * NSEC_PER_USEC ) ; if ( time_status & STA_FREQHOLD || time_reftime == 0 ) time_reftime = xtime . tv_sec ; mtemp = xtime . tv_sec - time_reftime ; time_reftime = xtime . tv_sec ; freq_adj = time_offset * mtemp ; freq_adj = shift_right ( freq_adj , time_constant * 2 + ( SHIFT_PLL + 2 ) * 2 - SHIFT_NSEC ) ; if ( mtemp >= MINSEC && ( time_status & STA_FLL || mtemp > MAXSEC ) ) freq_adj += div_s64 ( time_offset << ( SHIFT_NSEC - SHIFT_FLL ) , mtemp ) ; freq_adj += time_freq ; freq_adj = min ( freq_adj , ( s64 ) MAXFREQ_NSEC ) ; time_freq = max ( freq_adj , ( s64 ) - MAXFREQ_NSEC ) ; <S2SV_StartBug> time_offset = div_long_long_rem_signed ( time_offset , <S2SV_EndBug> <S2SV_StartBug> NTP_INTERVAL_FREQ , <S2SV_EndBug> & rem ) ; time_offset <<= SHIFT_UPDATE ; } } if ( txc -> modes & ADJ_TICK ) tick_usec = txc -> tick ; if ( txc -> modes & ( ADJ_TICK | ADJ_FREQUENCY | ADJ_OFFSET ) ) ntp_update_frequency ( ) ; } leave : if ( ( time_status & ( STA_UNSYNC | STA_CLOCKERR ) ) != 0 ) result = TIME_ERROR ; if ( ( txc -> modes == ADJ_OFFSET_SINGLESHOT ) || ( txc -> modes == ADJ_OFFSET_SS_READ ) ) txc -> offset = save_adjust ; else txc -> offset = ( ( long ) shift_right ( time_offset , SHIFT_UPDATE ) ) * NTP_INTERVAL_FREQ / 1000 ; txc -> freq = ( time_freq / NSEC_PER_USEC ) << ( SHIFT_USEC - SHIFT_NSEC ) ; txc -> maxerror = time_maxerror ; txc -> esterror = time_esterror ; txc -> status = time_status ; txc -> constant = time_constant ; txc -> precision = 1 ; txc -> tolerance = MAXFREQ ; txc -> tick = tick_usec ; txc -> ppsfreq = 0 ; txc -> jitter = 0 ; txc -> shift = 0 ; txc -> stabil = 0 ; txc -> jitcnt = 0 ; txc -> calcnt = 0 ; txc -> errcnt = 0 ; txc -> stbcnt = 0 ; write_sequnlock_irq ( & xtime_lock ) ; do_gettimeofday ( & txc -> time ) ; notify_cmos_timer ( ) ; return ( result ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mtemp , save_adjust <S2SV_ModEnd> ; s64 freq_adj <S2SV_ModStart> ; time_offset = div_s64 <S2SV_ModEnd> ( time_offset , <S2SV_ModStart> time_offset , NTP_INTERVAL_FREQ <S2SV_ModEnd> ) ; time_offset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 static struct super_block * alloc_super ( struct file_system_type * type , int flags ) { struct super_block * s = kzalloc ( sizeof ( struct super_block ) , GFP_USER ) ; static const struct super_operations default_op ; int i ; if ( ! s ) return NULL ; if ( security_sb_alloc ( s ) ) goto fail ; <S2SV_StartBug> # ifdef CONFIG_SMP <S2SV_EndBug> s -> s_files = alloc_percpu ( struct list_head ) ; if ( ! s -> s_files ) goto fail ; <S2SV_StartBug> for_each_possible_cpu ( i ) <S2SV_EndBug> INIT_LIST_HEAD ( per_cpu_ptr ( s -> s_files , i ) ) ; # else INIT_LIST_HEAD ( & s -> s_files ) ; # endif for ( i = 0 ; i < SB_FREEZE_LEVELS ; i ++ ) { if ( percpu_counter_init ( & s -> s_writers . counter [ i ] , 0 ) < 0 ) goto fail ; <S2SV_StartBug> lockdep_init_map ( & s -> s_writers . lock_map [ i ] , sb_writers_name [ i ] , <S2SV_EndBug> & type -> s_writers_key [ i ] , 0 ) ; } init_waitqueue_head ( & s -> s_writers . wait ) ; init_waitqueue_head ( & s -> s_writers . wait_unfrozen ) ; s -> s_flags = flags ; s -> s_bdi = & default_backing_dev_info ; INIT_HLIST_NODE ( & s -> s_instances ) ; INIT_HLIST_BL_HEAD ( & s -> s_anon ) ; INIT_LIST_HEAD ( & s -> s_inodes ) ; <S2SV_StartBug> if ( list_lru_init ( & s -> s_dentry_lru ) ) <S2SV_EndBug> goto fail ; <S2SV_StartBug> if ( list_lru_init ( & s -> s_inode_lru ) ) <S2SV_EndBug> goto fail ; INIT_LIST_HEAD ( & s -> s_mounts ) ; init_rwsem ( & s -> s_umount ) ; lockdep_set_class ( & s -> s_umount , & type -> s_umount_key ) ; down_write_nested ( & s -> s_umount , SINGLE_DEPTH_NESTING ) ; s -> s_count = 1 ; atomic_set ( & s -> s_active , 1 ) ; mutex_init ( & s -> s_vfs_rename_mutex ) ; lockdep_set_class ( & s -> s_vfs_rename_mutex , & type -> s_vfs_rename_key ) ; mutex_init ( & s -> s_dquot . dqio_mutex ) ; mutex_init ( & s -> s_dquot . dqonoff_mutex ) ; init_rwsem ( & s -> s_dquot . dqptr_sem ) ; s -> s_maxbytes = MAX_NON_LFS ; s -> s_op = & default_op ; s -> s_time_gran = 1000000000 ; s -> cleancache_poolid = - 1 ; s -> s_shrink . seeks = DEFAULT_SEEKS ; s -> s_shrink . scan_objects = super_cache_scan ; s -> s_shrink . count_objects = super_cache_count ; s -> s_shrink . batch = 1024 ; s -> s_shrink . flags = SHRINKER_NUMA_AWARE ; return s ; fail : destroy_super ( s ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto fail ; for ( i = 0 ; i < SB_FREEZE_LEVELS ; i ++ ) { if ( percpu_counter_init ( & s -> s_writers . counter [ i ] , 0 ) < 0 <S2SV_ModEnd> ) goto fail <S2SV_ModStart> goto fail ; lockdep_init_map ( & s -> s_writers . lock_map [ i ] , sb_writers_name [ i ] , & type -> s_writers_key [ i ] , 0 ) ; } init_waitqueue_head ( & s -> s_writers . wait ) ; init_waitqueue_head ( & s -> s_writers . wait_unfrozen ) ; s -> s_flags = flags ; s -> s_bdi = & default_backing_dev_info ; INIT_HLIST_NODE ( & s -> s_instances ) ; INIT_HLIST_BL_HEAD ( & s -> s_anon ) ; INIT_LIST_HEAD ( & s -> s_inodes ) ; if ( list_lru_init ( & s -> s_dentry_lru ) <S2SV_ModEnd> ) goto fail <S2SV_ModStart> goto fail ; <S2SV_ModEnd> if ( list_lru_init <S2SV_ModStart> & s -> s_inode_lru <S2SV_ModEnd> ) ) goto <S2SV_ModStart> goto fail ; <S2SV_ModEnd> INIT_LIST_HEAD ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9566\n\n```\nCWE-264 static FILE * open_log_file ( void ) { <S2SV_StartBug> if ( log_fp ) <S2SV_EndBug> return log_fp ; log_fp = fopen ( log_file , \"a+\" ) ; if ( log_fp == NULL ) { <S2SV_StartBug> if ( daemon_mode == FALSE ) { <S2SV_EndBug> printf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>open<S2SV_blank>log<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>for<S2SV_blank>writing\\\\n\" , log_file ) ; <S2SV_StartBug> } <S2SV_EndBug> return NULL ; } ( void ) fcntl ( fileno ( log_fp ) , F_SETFD , FD_CLOEXEC ) ; return log_fp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { int fh ; struct stat st ; if ( log_fp ) return log_fp ; if ( ( fh = open ( log_file , O_RDWR | O_APPEND | O_CREAT | O_NOFOLLOW , S_IRUSR | S_IWUSR ) ) == - 1 ) { if ( daemon_mode == FALSE ) printf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>open<S2SV_blank>log<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>for<S2SV_blank>writing\\\\n\" , log_file ) ; return NULL ; } log_fp = fdopen ( fh <S2SV_ModEnd> , \"a+\" ) <S2SV_ModStart> == FALSE ) <S2SV_ModEnd> printf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>open<S2SV_blank>log<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>for<S2SV_blank>writing\\\\n\" <S2SV_ModStart> log_file ) ; return NULL ; } if ( ( fstat ( fh , & st ) ) == - 1 ) { log_fp = NULL ; close ( fh ) ; if ( daemon_mode == FALSE ) printf ( \"Warning:<S2SV_blank>Cannot<S2SV_blank>fstat<S2SV_blank>log<S2SV_blank>file<S2SV_blank>\\'%s\\'\\\\n\" , log_file ) ; return NULL ; } if ( st . st_nlink != 1 || ( st . st_mode & S_IFMT ) != S_IFREG ) { log_fp = NULL ; close ( fh ) ; if ( daemon_mode == FALSE ) printf ( \"Warning:<S2SV_blank>log<S2SV_blank>file<S2SV_blank>\\'%s\\'<S2SV_blank>has<S2SV_blank>an<S2SV_blank>invalid<S2SV_blank>mode\\\\n\" , log_file ) ; <S2SV_ModEnd> return NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1344\n\n```\nCWE-264 int cg_write ( const char * path , const char * buf , size_t size , off_t offset , struct fuse_file_info * fi ) { struct fuse_context * fc = fuse_get_context ( ) ; char * localbuf = NULL ; struct cgfs_files * k = NULL ; struct file_info * f = ( struct file_info * ) fi -> fh ; bool r ; if ( f -> type != LXC_TYPE_CGFILE ) { fprintf ( stderr , \"Internal<S2SV_blank>error:<S2SV_blank>directory<S2SV_blank>cache<S2SV_blank>info<S2SV_blank>used<S2SV_blank>in<S2SV_blank>cg_write\\\\n\" ) ; return - EIO ; } if ( offset ) return 0 ; if ( ! fc ) return - EIO ; localbuf = alloca ( size + 1 ) ; localbuf [ size ] = '\\\\0' ; memcpy ( localbuf , buf , size ) ; if ( ( k = cgfs_get_key ( f -> controller , f -> cgroup , f -> file ) ) == NULL ) { size = - EINVAL ; goto out ; } if ( ! fc_may_access ( fc , f -> controller , f -> cgroup , f -> file , O_WRONLY ) ) { size = - EACCES ; goto out ; } if ( strcmp ( f -> file , \"tasks\" ) == 0 || strcmp ( f -> file , \"/tasks\" ) == 0 || strcmp ( f -> file , \"/cgroup.procs\" ) == 0 || strcmp ( f -> file , \"cgroup.procs\" ) == 0 ) <S2SV_StartBug> r = do_write_pids ( fc -> pid , f -> controller , f -> cgroup , f -> file , localbuf ) ; <S2SV_EndBug> else r = cgfs_set_value ( f -> controller , f -> cgroup , f -> file , localbuf ) ; if ( ! r ) size = - EINVAL ; out : free_key ( k ) ; return size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pid , fc -> uid ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 int sc_file_set_sec_attr ( sc_file_t * file , const u8 * sec_attr , size_t sec_attr_len ) { u8 * tmp ; if ( ! sc_file_valid ( file ) ) { return SC_ERROR_INVALID_ARGUMENTS ; } <S2SV_StartBug> if ( sec_attr == NULL ) { <S2SV_EndBug> if ( file -> sec_attr != NULL ) free ( file -> sec_attr ) ; file -> sec_attr = NULL ; file -> sec_attr_len = 0 ; return 0 ; } tmp = ( u8 * ) realloc ( file -> sec_attr , sec_attr_len ) ; if ( ! tmp ) { if ( file -> sec_attr ) free ( file -> sec_attr ) ; file -> sec_attr = NULL ; file -> sec_attr_len = 0 ; return SC_ERROR_OUT_OF_MEMORY ; } file -> sec_attr = tmp ; memcpy ( file -> sec_attr , sec_attr , sec_attr_len ) ; file -> sec_attr_len = sec_attr_len ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sec_attr == NULL || sec_attr_len\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-89(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0036\n\n```\nCWE-89 static CURLcode pop3_parse_url_path ( struct connectdata * conn ) { struct pop3_conn * pop3c = & conn -> proto . pop3c ; struct SessionHandle * data = conn -> data ; const char * path = data -> state . path ; <S2SV_StartBug> pop3c -> mailbox = curl_easy_unescape ( data , path , 0 , NULL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! pop3c -> mailbox ) <S2SV_EndBug> return CURLE_OUT_OF_MEMORY ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . path ; return Curl_urldecode <S2SV_ModEnd> ( data , <S2SV_ModStart> , 0 , & <S2SV_ModEnd> pop3c -> mailbox <S2SV_ModStart> pop3c -> mailbox , NULL , TRUE ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3636\n\n```\nCWE-000 void ping_unhash ( struct sock * sk ) { struct inet_sock * isk = inet_sk ( sk ) ; pr_debug ( \"ping_unhash(isk=%p,isk->num=%u)\\\\n\" , isk , isk -> inet_num ) ; if ( sk_hashed ( sk ) ) { write_lock_bh ( & ping_table . lock ) ; hlist_nulls_del ( & sk -> sk_nulls_node ) ; <S2SV_StartBug> sock_put ( sk ) ; <S2SV_EndBug> isk -> inet_num = 0 ; isk -> inet_sport = 0 ; sock_prot_inuse_add ( sock_net ( sk ) , sk -> sk_prot , - 1 ) ; write_unlock_bh ( & ping_table . lock ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk_nulls_node ) ; sk_nulls_node_init ( & sk -> sk_nulls_node ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14225\n\n```\nCWE-476 static int show_stream ( WriterContext * w , AVFormatContext * fmt_ctx , int stream_idx , InputStream * ist , int in_program ) { AVStream * stream = ist -> st ; AVCodecParameters * par ; AVCodecContext * dec_ctx ; char val_str [ 128 ] ; const char * s ; AVRational sar , dar ; AVBPrint pbuf ; const AVCodecDescriptor * cd ; int ret = 0 ; const char * profile = NULL ; av_bprint_init ( & pbuf , 1 , AV_BPRINT_SIZE_UNLIMITED ) ; writer_print_section_header ( w , in_program ? SECTION_ID_PROGRAM_STREAM : SECTION_ID_STREAM ) ; print_int ( \"index\" , stream -> index ) ; par = stream -> codecpar ; dec_ctx = ist -> dec_ctx ; if ( cd = avcodec_descriptor_get ( par -> codec_id ) ) { print_str ( \"codec_name\" , cd -> name ) ; if ( ! do_bitexact ) { print_str ( \"codec_long_name\" , cd -> long_name ? cd -> long_name : \"unknown\" ) ; } } else { print_str_opt ( \"codec_name\" , \"unknown\" ) ; if ( ! do_bitexact ) { print_str_opt ( \"codec_long_name\" , \"unknown\" ) ; } } if ( ! do_bitexact && ( profile = avcodec_profile_name ( par -> codec_id , par -> profile ) ) ) print_str ( \"profile\" , profile ) ; else { if ( par -> profile != FF_PROFILE_UNKNOWN ) { char profile_num [ 12 ] ; snprintf ( profile_num , sizeof ( profile_num ) , \"%d\" , par -> profile ) ; print_str ( \"profile\" , profile_num ) ; } else print_str_opt ( \"profile\" , \"unknown\" ) ; } s = av_get_media_type_string ( par -> codec_type ) ; if ( s ) print_str ( \"codec_type\" , s ) ; else print_str_opt ( \"codec_type\" , \"unknown\" ) ; # if FF_API_LAVF_AVCTX if ( dec_ctx ) print_q ( \"codec_time_base\" , dec_ctx -> time_base , '/' ) ; # endif print_str ( \"codec_tag_string\" , av_fourcc2str ( par -> codec_tag ) ) ; print_fmt ( \"codec_tag\" , \"0x%04\" PRIx32 , par -> codec_tag ) ; switch ( par -> codec_type ) { case AVMEDIA_TYPE_VIDEO : print_int ( \"width\" , par -> width ) ; print_int ( \"height\" , par -> height ) ; if ( dec_ctx ) { print_int ( \"coded_width\" , dec_ctx -> coded_width ) ; print_int ( \"coded_height\" , dec_ctx -> coded_height ) ; } print_int ( \"has_b_frames\" , par -> video_delay ) ; sar = av_guess_sample_aspect_ratio ( fmt_ctx , stream , NULL ) ; if ( sar . den ) { print_q ( \"sample_aspect_ratio\" , sar , ':' ) ; av_reduce ( & dar . num , & dar . den , par -> width * sar . num , par -> height * sar . den , 1024 * 1024 ) ; print_q ( \"display_aspect_ratio\" , dar , ':' ) ; } else { print_str_opt ( \"sample_aspect_ratio\" , \"N/A\" ) ; print_str_opt ( \"display_aspect_ratio\" , \"N/A\" ) ; } s = av_get_pix_fmt_name ( par -> format ) ; if ( s ) print_str ( \"pix_fmt\" , s ) ; else print_str_opt ( \"pix_fmt\" , \"unknown\" ) ; print_int ( \"level\" , par -> level ) ; if ( par -> color_range != AVCOL_RANGE_UNSPECIFIED ) print_str ( \"color_range\" , av_color_range_name ( par -> color_range ) ) ; else print_str_opt ( \"color_range\" , \"N/A\" ) ; if ( par -> color_space != AVCOL_SPC_UNSPECIFIED ) print_str ( \"color_space\" , av_color_space_name ( par -> color_space ) ) ; else print_str_opt ( \"color_space\" , av_color_space_name ( par -> color_space ) ) ; if ( par -> color_trc != AVCOL_TRC_UNSPECIFIED ) print_str ( \"color_transfer\" , av_color_transfer_name ( par -> color_trc ) ) ; else print_str_opt ( \"color_transfer\" , av_color_transfer_name ( par -> color_trc ) ) ; <S2SV_StartBug> if ( par -> color_primaries != AVCOL_PRI_UNSPECIFIED ) <S2SV_EndBug> print_str ( \"color_primaries\" , av_color_primaries_name ( par -> color_primaries ) ) ; else print_str_opt ( \"color_primaries\" , av_color_primaries_name ( par -> color_primaries ) ) ; if ( par -> chroma_location != AVCHROMA_LOC_UNSPECIFIED ) print_str ( \"chroma_location\" , av_chroma_location_name ( par -> chroma_location ) ) ; else print_str_opt ( \"chroma_location\" , av_chroma_location_name ( par -> chroma_location ) ) ; if ( par -> field_order == AV_FIELD_PROGRESSIVE ) print_str ( \"field_order\" , \"progressive\" ) ; else if ( par -> field_order == AV_FIELD_TT ) print_str ( \"field_order\" , \"tt\" ) ; else if ( par -> field_order == AV_FIELD_BB ) print_str ( \"field_order\" , \"bb\" ) ; else if ( par -> field_order == AV_FIELD_TB ) print_str ( \"field_order\" , \"tb\" ) ; else if ( par -> field_order == AV_FIELD_BT ) print_str ( \"field_order\" , \"bt\" ) ; else print_str_opt ( \"field_order\" , \"unknown\" ) ; # if FF_API_PRIVATE_OPT if ( dec_ctx && dec_ctx -> timecode_frame_start >= 0 ) { char tcbuf [ AV_TIMECODE_STR_SIZE ] ; av_timecode_make_mpeg_tc_string ( tcbuf , dec_ctx -> timecode_frame_start ) ; print_str ( \"timecode\" , tcbuf ) ; } else { print_str_opt ( \"timecode\" , \"N/A\" ) ; } # endif if ( dec_ctx ) print_int ( \"refs\" , dec_ctx -> refs ) ; break ; case AVMEDIA_TYPE_AUDIO : s = av_get_sample_fmt_name ( par -> format ) ; if ( s ) print_str ( \"sample_fmt\" , s ) ; else print_str_opt ( \"sample_fmt\" , \"unknown\" ) ; print_val ( \"sample_rate\" , par -> sample_rate , unit_hertz_str ) ; print_int ( \"channels\" , par -> channels ) ; if ( par -> channel_layout ) { av_bprint_clear ( & pbuf ) ; av_bprint_channel_layout ( & pbuf , par -> channels , par -> channel_layout ) ; print_str ( \"channel_layout\" , pbuf . str ) ; } else { print_str_opt ( \"channel_layout\" , \"unknown\" ) ; } print_int ( \"bits_per_sample\" , av_get_bits_per_sample ( par -> codec_id ) ) ; break ; case AVMEDIA_TYPE_SUBTITLE : if ( par -> width ) print_int ( \"width\" , par -> width ) ; else print_str_opt ( \"width\" , \"N/A\" ) ; if ( par -> height ) print_int ( \"height\" , par -> height ) ; else print_str_opt ( \"height\" , \"N/A\" ) ; break ; } if ( dec_ctx && dec_ctx -> codec && dec_ctx -> codec -> priv_class && show_private_data ) { const AVOption * opt = NULL ; while ( opt = av_opt_next ( dec_ctx -> priv_data , opt ) ) { uint8_t * str ; if ( opt -> flags ) continue ; if ( av_opt_get ( dec_ctx -> priv_data , opt -> name , 0 , & str ) >= 0 ) { print_str ( opt -> name , str ) ; av_free ( str ) ; } } } if ( fmt_ctx -> iformat -> flags & AVFMT_SHOW_IDS ) print_fmt ( \"id\" , \"0x%x\" , stream -> id ) ; else print_str_opt ( \"id\" , \"N/A\" ) ; print_q ( \"r_frame_rate\" , stream -> r_frame_rate , '/' ) ; print_q ( \"avg_frame_rate\" , stream -> avg_frame_rate , '/' ) ; print_q ( \"time_base\" , stream -> time_base , '/' ) ; print_ts ( \"start_pts\" , stream -> start_time ) ; print_time ( \"start_time\" , stream -> start_time , & stream -> time_base ) ; print_ts ( \"duration_ts\" , stream -> duration ) ; print_time ( \"duration\" , stream -> duration , & stream -> time_base ) ; if ( par -> bit_rate > 0 ) print_val ( \"bit_rate\" , par -> bit_rate , unit_bit_per_second_str ) ; else print_str_opt ( \"bit_rate\" , \"N/A\" ) ; # if FF_API_LAVF_AVCTX if ( stream -> codec -> rc_max_rate > 0 ) print_val ( \"max_bit_rate\" , stream -> codec -> rc_max_rate , unit_bit_per_second_str ) ; else print_str_opt ( \"max_bit_rate\" , \"N/A\" ) ; # endif if ( dec_ctx && dec_ctx -> bits_per_raw_sample > 0 ) print_fmt ( \"bits_per_raw_sample\" , \"%d\" , dec_ctx -> bits_per_raw_sample ) ; else print_str_opt ( \"bits_per_raw_sample\" , \"N/A\" ) ; if ( stream -> nb_frames ) print_fmt ( \"nb_frames\" , \"%\" PRId64 , stream -> nb_frames ) ; else print_str_opt ( \"nb_frames\" , \"N/A\" ) ; if ( nb_streams_frames [ stream_idx ] ) print_fmt ( \"nb_read_frames\" , \"%\" PRIu64 , nb_streams_frames [ stream_idx ] ) ; else print_str_opt ( \"nb_read_frames\" , \"N/A\" ) ; if ( nb_streams_packets [ stream_idx ] ) print_fmt ( \"nb_read_packets\" , \"%\" PRIu64 , nb_streams_packets [ stream_idx ] ) ; else print_str_opt ( \"nb_read_packets\" , \"N/A\" ) ; if ( do_show_data ) writer_print_data ( w , \"extradata\" , par -> extradata , par -> extradata_size ) ; writer_print_data_hash ( w , \"extradata_hash\" , par -> extradata , par -> extradata_size ) ; # define PRINT_DISPOSITION ( flagname , name ) do { print_int ( name , ! ! ( stream -> disposition & AV_DISPOSITION_ ## flagname ) ) ; } while ( 0 ) if ( do_show_stream_disposition ) { writer_print_section_header ( w , in_program ? SECTION_ID_PROGRAM_STREAM_DISPOSITION : SECTION_ID_STREAM_DISPOSITION ) ; PRINT_DISPOSITION ( DEFAULT , \"default\" ) ; PRINT_DISPOSITION ( DUB , \"dub\" ) ; PRINT_DISPOSITION ( ORIGINAL , \"original\" ) ; PRINT_DISPOSITION ( COMMENT , \"comment\" ) ; PRINT_DISPOSITION ( LYRICS , \"lyrics\" ) ; PRINT_DISPOSITION ( KARAOKE , \"karaoke\" ) ; PRINT_DISPOSITION ( FORCED , \"forced\" ) ; PRINT_DISPOSITION ( HEARING_IMPAIRED , \"hearing_impaired\" ) ; PRINT_DISPOSITION ( VISUAL_IMPAIRED , \"visual_impaired\" ) ; PRINT_DISPOSITION ( CLEAN_EFFECTS , \"clean_effects\" ) ; PRINT_DISPOSITION ( ATTACHED_PIC , \"attached_pic\" ) ; PRINT_DISPOSITION ( TIMED_THUMBNAILS , \"timed_thumbnails\" ) ; writer_print_section_footer ( w ) ; } if ( do_show_stream_tags ) ret = show_tags ( w , stream -> metadata , in_program ? SECTION_ID_PROGRAM_STREAM_TAGS : SECTION_ID_STREAM_TAGS ) ; if ( stream -> nb_side_data ) { print_pkt_side_data ( w , stream -> codecpar , stream -> side_data , stream -> nb_side_data , SECTION_ID_STREAM_SIDE_DATA_LIST , SECTION_ID_STREAM_SIDE_DATA ) ; } writer_print_section_footer ( w ) ; av_bprint_finalize ( & pbuf , NULL ) ; fflush ( stdout ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; print_primaries ( w , <S2SV_ModEnd> par -> color_primaries <S2SV_ModStart> par -> color_primaries <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7911\n\n```\nCWE-416 static int get_task_ioprio ( struct task_struct * p ) { int ret ; ret = security_task_getioprio ( p ) ; if ( ret ) goto out ; ret = IOPRIO_PRIO_VALUE ( IOPRIO_CLASS_NONE , IOPRIO_NORM ) ; <S2SV_StartBug> if ( p -> io_context ) <S2SV_EndBug> ret = p -> io_context -> ioprio ; <S2SV_StartBug> out : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> IOPRIO_NORM ) ; task_lock ( p ) ; <S2SV_ModStart> -> ioprio ; task_unlock ( p ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10012\n\n```\nCWE-119 static int privsep_preauth ( Authctxt * authctxt ) { int status , r ; pid_t pid ; struct ssh_sandbox * box = NULL ; pmonitor = monitor_init ( ) ; pmonitor -> m_pkex = & active_state -> kex ; if ( use_privsep == PRIVSEP_ON ) box = ssh_sandbox_init ( ) ; pid = fork ( ) ; if ( pid == - 1 ) { fatal ( \"fork<S2SV_blank>of<S2SV_blank>unprivileged<S2SV_blank>child<S2SV_blank>failed\" ) ; } else if ( pid != 0 ) { debug2 ( \"Network<S2SV_blank>child<S2SV_blank>is<S2SV_blank>on<S2SV_blank>pid<S2SV_blank>%ld\" , ( long ) pid ) ; pmonitor -> m_pid = pid ; if ( have_agent ) { r = ssh_get_authentication_socket ( & auth_sock ) ; if ( r != 0 ) { error ( \"Could<S2SV_blank>not<S2SV_blank>get<S2SV_blank>agent<S2SV_blank>socket:<S2SV_blank>%s\" , ssh_err ( r ) ) ; have_agent = 0 ; } } if ( box != NULL ) ssh_sandbox_parent_preauth ( box , pid ) ; monitor_child_preauth ( authctxt , pmonitor ) ; <S2SV_StartBug> monitor_sync ( pmonitor ) ; <S2SV_EndBug> while ( waitpid ( pid , & status , 0 ) < 0 ) { if ( errno == EINTR ) continue ; pmonitor -> m_pid = - 1 ; fatal ( \"%s:<S2SV_blank>waitpid:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; } privsep_is_preauth = 0 ; pmonitor -> m_pid = - 1 ; if ( WIFEXITED ( status ) ) { if ( WEXITSTATUS ( status ) != 0 ) fatal ( \"%s:<S2SV_blank>preauth<S2SV_blank>child<S2SV_blank>exited<S2SV_blank>with<S2SV_blank>status<S2SV_blank>%d\" , __func__ , WEXITSTATUS ( status ) ) ; } else if ( WIFSIGNALED ( status ) ) fatal ( \"%s:<S2SV_blank>preauth<S2SV_blank>child<S2SV_blank>terminated<S2SV_blank>by<S2SV_blank>signal<S2SV_blank>%d\" , __func__ , WTERMSIG ( status ) ) ; if ( box != NULL ) ssh_sandbox_parent_finish ( box ) ; return 1 ; } else { close ( pmonitor -> m_sendfd ) ; close ( pmonitor -> m_log_recvfd ) ; set_log_handler ( mm_log_handler , pmonitor ) ; privsep_preauth_child ( ) ; setproctitle ( \"%s\" , \"[net]\" ) ; if ( box != NULL ) ssh_sandbox_child ( box ) ; return 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pmonitor ) ; <S2SV_ModEnd> while ( waitpid\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11487\n\n```\nCWE-416 <S2SV_StartBug> void generic_pipe_buf_get ( struct pipe_inode_info * pipe , struct pipe_buffer * buf ) <S2SV_EndBug> { <S2SV_StartBug> get_page ( buf -> page ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> bool <S2SV_ModEnd> generic_pipe_buf_get ( struct <S2SV_ModStart> buf ) { return try_get_page <S2SV_ModEnd> ( buf ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void set_segmentation_map ( VP8_COMP * cpi , unsigned char * segmentation_map ) { <S2SV_StartBug> vpx_memcpy ( cpi -> segmentation_map , segmentation_map , ( cpi -> common . mb_rows * cpi -> common . mb_cols ) ) ; <S2SV_EndBug> cpi -> mb . e_mbd . update_mb_segmentation_map = 1 ; cpi -> mb . e_mbd . update_mb_segmentation_data = 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> segmentation_map ) { memcpy <S2SV_ModEnd> ( cpi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16718\n\n```\nCWE-78 static int bin_symbols ( RCore * r , int mode , ut64 laddr , int va , ut64 at , const char * name , bool exponly , const char * args ) { RBinInfo * info = r_bin_get_info ( r -> bin ) ; RList * entries = r_bin_get_entries ( r -> bin ) ; RBinSymbol * symbol ; RBinAddr * entry ; RListIter * iter ; bool firstexp = true ; bool printHere = false ; int i = 0 , lastfs = 's' ; bool bin_demangle = r_config_get_i ( r -> config , \"bin.demangle\" ) ; if ( ! info ) { return 0 ; } if ( args && * args == '.' ) { printHere = true ; } bool is_arm = info && info -> arch && ! strncmp ( info -> arch , \"arm\" , 3 ) ; const char * lang = bin_demangle ? r_config_get ( r -> config , \"bin.lang\" ) : NULL ; RList * symbols = r_bin_get_symbols ( r -> bin ) ; r_spaces_push ( & r -> anal -> meta_spaces , \"bin\" ) ; if ( IS_MODE_JSON ( mode ) && ! printHere ) { r_cons_printf ( \"[\" ) ; } else if ( IS_MODE_SET ( mode ) ) { r_flag_space_set ( r -> flags , R_FLAGS_FS_SYMBOLS ) ; } else if ( ! at && exponly ) { if ( IS_MODE_RAD ( mode ) ) { r_cons_printf ( \"fs<S2SV_blank>exports\\\\n\" ) ; } else if ( IS_MODE_NORMAL ( mode ) ) { r_cons_printf ( printHere ? \"\" : \"[Exports]\\\\n\" ) ; } } else if ( ! at && ! exponly ) { if ( IS_MODE_RAD ( mode ) ) { r_cons_printf ( \"fs<S2SV_blank>symbols\\\\n\" ) ; } else if ( IS_MODE_NORMAL ( mode ) ) { r_cons_printf ( printHere ? \"\" : \"[Symbols]\\\\n\" ) ; } } if ( IS_MODE_NORMAL ( mode ) ) { r_cons_printf ( \"Num<S2SV_blank>Paddr<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Vaddr<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Bind<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Type<S2SV_blank>Size<S2SV_blank>Name\\\\n\" ) ; } size_t count = 0 ; r_list_foreach ( symbols , iter , symbol ) { if ( ! symbol -> name ) { continue ; } char * r_symbol_name = r_str_escape_utf8 ( symbol -> name , false , true ) ; ut64 addr = compute_addr ( r -> bin , symbol -> paddr , symbol -> vaddr , va ) ; int len = symbol -> size ? symbol -> size : 32 ; SymName sn = { 0 } ; if ( exponly && ! isAnExport ( symbol ) ) { free ( r_symbol_name ) ; continue ; } if ( name && strcmp ( r_symbol_name , name ) ) { free ( r_symbol_name ) ; continue ; } if ( at && ( ! symbol -> size || ! is_in_range ( at , addr , symbol -> size ) ) ) { free ( r_symbol_name ) ; continue ; } if ( ( printHere && ! is_in_range ( r -> offset , symbol -> paddr , len ) ) && ( printHere && ! is_in_range ( r -> offset , addr , len ) ) ) { free ( r_symbol_name ) ; continue ; } count ++ ; snInit ( r , & sn , symbol , lang ) ; if ( IS_MODE_SET ( mode ) && ( is_section_symbol ( symbol ) || is_file_symbol ( symbol ) ) ) { } else if ( IS_MODE_SET ( mode ) && is_special_symbol ( symbol ) ) { if ( is_arm ) { handle_arm_special_symbol ( r , symbol , va ) ; } } else if ( IS_MODE_SET ( mode ) ) { if ( is_arm ) { handle_arm_symbol ( r , symbol , info , va ) ; } select_flag_space ( r , symbol ) ; if ( sn . classname ) { RFlagItem * fi = r_flag_get ( r -> flags , sn . methflag ) ; if ( r -> bin -> prefix ) { char * prname = r_str_newf ( \"%s.%s\" , r -> bin -> prefix , sn . methflag ) ; r_name_filter ( sn . methflag , - 1 ) ; free ( sn . methflag ) ; sn . methflag = prname ; } if ( fi ) { r_flag_item_set_realname ( fi , sn . methname ) ; if ( ( fi -> offset - r -> flags -> base ) == addr ) { r_flag_unset ( r -> flags , fi ) ; } } else { fi = r_flag_set ( r -> flags , sn . methflag , addr , symbol -> size ) ; char * comment = fi -> comment ? strdup ( fi -> comment ) : NULL ; if ( comment ) { r_flag_item_set_comment ( fi , comment ) ; R_FREE ( comment ) ; } } } else { const char * n = sn . demname ? sn . demname : sn . name ; const char * fn = sn . demflag ? sn . demflag : sn . nameflag ; char * fnp = ( r -> bin -> prefix ) ? r_str_newf ( \"%s.%s\" , r -> bin -> prefix , fn ) : strdup ( fn ) ; RFlagItem * fi = r_flag_set ( r -> flags , fnp , addr , symbol -> size ) ; if ( fi ) { r_flag_item_set_realname ( fi , n ) ; fi -> demangled = ( bool ) ( size_t ) sn . demname ; } else { if ( fn ) { eprintf ( \"[Warning]<S2SV_blank>Can\\'t<S2SV_blank>find<S2SV_blank>flag<S2SV_blank>(%s)\\\\n\" , fn ) ; } } free ( fnp ) ; } if ( sn . demname ) { r_meta_add ( r -> anal , R_META_TYPE_COMMENT , addr , symbol -> size , sn . demname ) ; } r_flag_space_pop ( r -> flags ) ; } else if ( IS_MODE_JSON ( mode ) ) { char * str = r_str_escape_utf8_for_json ( r_symbol_name , - 1 ) ; r_cons_printf ( \"%s{\\\\\"name\\\\\":\\\\\"%s\\\\\",\" \"\\\\\"demname\\\\\":\\\\\"%s\\\\\",\" \"\\\\\"flagname\\\\\":\\\\\"%s\\\\\",\" \"\\\\\"ordinal\\\\\":%d,\" \"\\\\\"bind\\\\\":\\\\\"%s\\\\\",\" \"\\\\\"size\\\\\":%d,\" \"\\\\\"type\\\\\":\\\\\"%s\\\\\",\" \"\\\\\"vaddr\\\\\":%\" PFMT64d \",\" \"\\\\\"paddr\\\\\":%\" PFMT64d \"}\" , ( ( exponly && firstexp ) || printHere ) ? \"\" : ( iter -> p ? \",\" : \"\" ) , str , sn . demname ? sn . demname : \"\" , sn . nameflag , symbol -> ordinal , symbol -> bind , ( int ) symbol -> size , symbol -> type , ( ut64 ) addr , ( ut64 ) symbol -> paddr ) ; free ( str ) ; } else if ( IS_MODE_SIMPLE ( mode ) ) { const char * name = sn . demname ? sn . demname : r_symbol_name ; r_cons_printf ( \"0x%08\" PFMT64x \"<S2SV_blank>%d<S2SV_blank>%s\\\\n\" , addr , ( int ) symbol -> size , name ) ; } else if ( IS_MODE_SIMPLEST ( mode ) ) { const char * name = sn . demname ? sn . demname : r_symbol_name ; r_cons_printf ( \"%s\\\\n\" , name ) ; } else if ( IS_MODE_RAD ( mode ) ) { if ( is_special_symbol ( symbol ) ) { goto next ; } RBinFile * binfile ; RBinPlugin * plugin ; const char * name = sn . demname ? sn . demname : r_symbol_name ; if ( ! name ) { goto next ; } if ( ! strncmp ( name , \"imp.\" , 4 ) ) { if ( lastfs != 'i' ) { r_cons_printf ( \"fs<S2SV_blank>imports\\\\n\" ) ; } lastfs = 'i' ; } else { if ( lastfs != 's' ) { const char * fs = exponly ? \"exports\" : \"symbols\" ; r_cons_printf ( \"fs<S2SV_blank>%s\\\\n\" , fs ) ; } lastfs = 's' ; } if ( r -> bin -> prefix || * name ) { char * flagname = construct_symbol_flagname ( \"sym\" , name , MAXFLAG_LEN_DEFAULT ) ; if ( ! flagname ) { goto next ; } r_cons_printf ( \"\\\\\"f<S2SV_blank>%s%s%s<S2SV_blank>%u<S2SV_blank>0x%08\" PFMT64x \"\\\\\"\\\\n\" , r -> bin -> prefix ? r -> bin -> prefix : \"\" , r -> bin -> prefix ? \".\" : \"\" , flagname , symbol -> size , addr ) ; free ( flagname ) ; } binfile = r_bin_cur ( r -> bin ) ; plugin = r_bin_file_cur_plugin ( binfile ) ; if ( plugin && plugin -> name ) { if ( r_str_startswith ( plugin -> name , \"pe\" ) ) { char * module = strdup ( r_symbol_name ) ; char * p = strstr ( module , \".dll_\" ) ; if ( p && strstr ( module , \"imp.\" ) ) { char * symname = __filterShell ( p + 5 ) ; char * m = __filterShell ( module ) ; * p = 0 ; if ( r -> bin -> prefix ) { <S2SV_StartBug> r_cons_printf ( \"k<S2SV_blank>bin/pe/%s/%d=%s.%s\\\\n\" , <S2SV_EndBug> module , symbol -> ordinal , r -> bin -> prefix , symname ) ; } else { <S2SV_StartBug> r_cons_printf ( \"k<S2SV_blank>bin/pe/%s/%d=%s\\\\n\" , <S2SV_EndBug> module , symbol -> ordinal , symname ) ; } free ( symname ) ; free ( m ) ; } free ( module ) ; } } } else { const char * bind = symbol -> bind ? symbol -> bind : \"NONE\" ; const char * type = symbol -> type ? symbol -> type : \"NONE\" ; const char * name = r_str_get ( sn . demname ? sn . demname : r_symbol_name ) ; r_cons_printf ( \"%03u\" , symbol -> ordinal ) ; if ( symbol -> paddr == UT64_MAX ) { r_cons_printf ( \"<S2SV_blank>----------\" ) ; } else { r_cons_printf ( \"<S2SV_blank>0x%08\" PFMT64x , symbol -> paddr ) ; } r_cons_printf ( \"<S2SV_blank>0x%08\" PFMT64x \"<S2SV_blank>%6s<S2SV_blank>%6s<S2SV_blank>%4d%s%s\\\\n\" , addr , bind , type , symbol -> size , * name ? \"<S2SV_blank>\" : \"\" , name ) ; } next : snFini ( & sn ) ; i ++ ; free ( r_symbol_name ) ; if ( exponly && firstexp ) { firstexp = false ; } if ( printHere ) { break ; } } if ( count == 0 && IS_MODE_JSON ( mode ) ) { r_cons_printf ( \"{}\" ) ; } if ( is_arm ) { r_list_foreach ( entries , iter , entry ) { if ( IS_MODE_SET ( mode ) ) { handle_arm_entry ( r , entry , info , va ) ; } } } if ( IS_MODE_JSON ( mode ) && ! printHere ) { r_cons_printf ( \"]\" ) ; } r_spaces_pop ( & r -> anal -> meta_spaces ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { r_cons_printf ( \"\\\\\"k<S2SV_blank>bin/pe/%s/%d=%s.%s\\\\\"\\\\n\" <S2SV_ModEnd> , module , <S2SV_ModStart> { r_cons_printf ( \"\\\\\"k<S2SV_blank>bin/pe/%s/%d=%s\\\\\"\\\\n\" <S2SV_ModEnd> , module ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0838\n\n```\nCWE-119 void WT_VoiceGain ( S_WT_VOICE * pWTVoice , S_WT_INT_FRAME * pWTIntFrame ) { EAS_I32 * pMixBuffer ; EAS_PCM * pInputBuffer ; EAS_I32 gain ; EAS_I32 gainIncrement ; EAS_I32 tmp0 ; EAS_I32 tmp1 ; EAS_I32 tmp2 ; EAS_I32 numSamples ; # if ( NUM_OUTPUT_CHANNELS == 2 ) EAS_I32 gainLeft , gainRight ; # endif numSamples = pWTIntFrame -> numSamples ; if ( numSamples <= 0 ) { <S2SV_StartBug> ALOGE ( \"b/26366256\" ) ; <S2SV_EndBug> return ; } pMixBuffer = pWTIntFrame -> pMixBuffer ; pInputBuffer = pWTIntFrame -> pAudioBuffer ; gainIncrement = ( pWTIntFrame -> frame . gainTarget - pWTIntFrame -> prevGain ) << ( 16 - SYNTH_UPDATE_PERIOD_IN_BITS ) ; if ( gainIncrement < 0 ) gainIncrement ++ ; gain = pWTIntFrame -> prevGain << 16 ; # if ( NUM_OUTPUT_CHANNELS == 2 ) gainLeft = pWTVoice -> gainLeft ; gainRight = pWTVoice -> gainRight ; # endif while ( numSamples -- ) { tmp0 = * pInputBuffer ++ ; gain += gainIncrement ; tmp2 = gain >> 16 ; tmp2 *= tmp0 ; # if ( NUM_OUTPUT_CHANNELS == 2 ) tmp2 = tmp2 >> 14 ; tmp1 = * pMixBuffer ; tmp0 = tmp2 * gainLeft ; tmp0 = tmp0 >> NUM_MIXER_GUARD_BITS ; tmp1 += tmp0 ; * pMixBuffer ++ = tmp1 ; tmp1 = * pMixBuffer ; tmp0 = tmp2 * gainRight ; tmp0 = tmp0 >> NUM_MIXER_GUARD_BITS ; tmp1 += tmp0 ; * pMixBuffer ++ = tmp1 ; # else tmp1 = * pMixBuffer ; tmp2 = tmp2 >> ( NUM_MIXER_GUARD_BITS - 1 ) ; tmp1 += tmp2 ; * pMixBuffer ++ = tmp1 ; # endif } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ALOGE ( \"b/26366256\" ) ; android_errorWriteLog ( 0x534e4554 , \"26366256\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3480\n\n```\nCWE-20 size_t cdf_count_chain ( const cdf_sat_t * sat , cdf_secid_t sid , size_t size ) { size_t i , j ; <S2SV_StartBug> cdf_secid_t maxsector = ( cdf_secid_t ) ( sat -> sat_len * size ) ; <S2SV_EndBug> DPRINTF ( ( \"Chain:\" ) ) ; for ( j = i = 0 ; sid >= 0 ; i ++ , j ++ ) { DPRINTF ( ( \"<S2SV_blank>%d\" , sid ) ) ; if ( j >= CDF_LOOP_LIMIT ) { DPRINTF ( ( \"Counting<S2SV_blank>chain<S2SV_blank>loop<S2SV_blank>limit\" ) ) ; errno = EFTYPE ; return ( size_t ) - 1 ; } <S2SV_StartBug> if ( sid > maxsector ) { <S2SV_EndBug> DPRINTF ( ( \"Sector<S2SV_blank>%d<S2SV_blank>><S2SV_blank>%d\\\\n\" , sid , maxsector ) ) ; errno = EFTYPE ; return ( size_t ) - 1 ; } sid = CDF_TOLE4 ( ( uint32_t ) sat -> sat_tab [ sid ] ) ; } if ( i == 0 ) { DPRINTF ( ( \"<S2SV_blank>none,<S2SV_blank>sid:<S2SV_blank>%d\\\\n\" , sid ) ) ; return ( size_t ) - 1 ; } DPRINTF ( ( \"\\\\n\" ) ) ; return i ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( cdf_secid_t ) ( <S2SV_ModStart> * size ) / sizeof ( maxsector ) ) <S2SV_ModStart> if ( sid >= maxsector ) { DPRINTF ( ( \"Sector<S2SV_blank>%d<S2SV_blank>>=<S2SV_blank>%d\\\\n\" <S2SV_ModEnd> , sid ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7348\n\n```\nCWE-399 static struct kioctx * ioctx_alloc ( unsigned nr_events ) { struct mm_struct * mm = current -> mm ; struct kioctx * ctx ; int err = - ENOMEM ; nr_events = max ( nr_events , num_possible_cpus ( ) * 4 ) ; nr_events *= 2 ; if ( ( nr_events > ( 0x10000000U / sizeof ( struct io_event ) ) ) || ( nr_events > ( 0x10000000U / sizeof ( struct kiocb ) ) ) ) { pr_debug ( \"ENOMEM:<S2SV_blank>nr_events<S2SV_blank>too<S2SV_blank>high\\\\n\" ) ; return ERR_PTR ( - EINVAL ) ; } if ( ! nr_events || ( unsigned long ) nr_events > ( aio_max_nr * 2UL ) ) return ERR_PTR ( - EAGAIN ) ; ctx = kmem_cache_zalloc ( kioctx_cachep , GFP_KERNEL ) ; if ( ! ctx ) return ERR_PTR ( - ENOMEM ) ; ctx -> max_reqs = nr_events ; if ( percpu_ref_init ( & ctx -> users , free_ioctx_users ) ) goto err ; if ( percpu_ref_init ( & ctx -> reqs , free_ioctx_reqs ) ) goto err ; spin_lock_init ( & ctx -> ctx_lock ) ; spin_lock_init ( & ctx -> completion_lock ) ; mutex_init ( & ctx -> ring_lock ) ; init_waitqueue_head ( & ctx -> wait ) ; INIT_LIST_HEAD ( & ctx -> active_reqs ) ; ctx -> cpu = alloc_percpu ( struct kioctx_cpu ) ; if ( ! ctx -> cpu ) goto err ; if ( aio_setup_ring ( ctx ) < 0 ) goto err ; atomic_set ( & ctx -> reqs_available , ctx -> nr_events - 1 ) ; ctx -> req_batch = ( ctx -> nr_events - 1 ) / ( num_possible_cpus ( ) * 4 ) ; if ( ctx -> req_batch < 1 ) ctx -> req_batch = 1 ; spin_lock ( & aio_nr_lock ) ; if ( aio_nr + nr_events > ( aio_max_nr * 2UL ) || aio_nr + nr_events < aio_nr ) { spin_unlock ( & aio_nr_lock ) ; err = - EAGAIN ; goto err ; } aio_nr += ctx -> max_reqs ; spin_unlock ( & aio_nr_lock ) ; percpu_ref_get ( & ctx -> users ) ; err = ioctx_add_table ( ctx , mm ) ; if ( err ) goto err_cleanup ; pr_debug ( \"allocated<S2SV_blank>ioctx<S2SV_blank>%p[%ld]:<S2SV_blank>mm=%p<S2SV_blank>mask=0x%x\\\\n\" , ctx , ctx -> user_id , mm , ctx -> nr_events ) ; return ctx ; err_cleanup : aio_nr_sub ( ctx -> max_reqs ) ; err : <S2SV_StartBug> aio_free_ring ( ctx ) ; <S2SV_EndBug> free_percpu ( ctx -> cpu ) ; free_percpu ( ctx -> reqs . pcpu_count ) ; free_percpu ( ctx -> users . pcpu_count ) ; kmem_cache_free ( kioctx_cachep , ctx ) ; pr_debug ( \"error<S2SV_blank>allocating<S2SV_blank>ioctx<S2SV_blank>%d\\\\n\" , err ) ; return ERR_PTR ( err ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; err : <S2SV_ModEnd> free_percpu ( ctx\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8830\n\n```\nCWE-000 static ssize_t aio_setup_vectored_rw ( struct kiocb * kiocb , int rw , char __user * buf , unsigned long * nr_segs , size_t * len , struct iovec * * iovec , <S2SV_StartBug> bool compat ) <S2SV_EndBug> { ssize_t ret ; * nr_segs = * len ; # ifdef CONFIG_COMPAT if ( compat ) ret = compat_rw_copy_check_uvector ( rw , ( struct compat_iovec __user * ) buf , * nr_segs , UIO_FASTIOV , * iovec , iovec ) ; else # endif ret = rw_copy_check_uvector ( rw , ( struct iovec __user * ) buf , * nr_segs , UIO_FASTIOV , * iovec , iovec ) ; if ( ret < 0 ) return ret ; * len = ret ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , bool compat , struct iov_iter * iter <S2SV_ModStart> = ret ; iov_iter_init ( iter , rw , * iovec , * nr_segs , * len ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13225\n\n```\nCWE-476 static int compile_length_bag_node ( BagNode * node , regex_t * reg ) { int len ; int tlen ; if ( node -> type == BAG_OPTION ) return compile_length_option_node ( node , reg ) ; if ( NODE_BAG_BODY ( node ) ) { tlen = compile_length_tree ( NODE_BAG_BODY ( node ) , reg ) ; if ( tlen < 0 ) return tlen ; } else tlen = 0 ; switch ( node -> type ) { case BAG_MEMORY : # ifdef USE_CALL if ( node -> m . regnum == 0 && NODE_IS_CALLED ( node ) ) { len = tlen + SIZE_OP_CALL + SIZE_OP_JUMP + SIZE_OP_RETURN ; return len ; } if ( NODE_IS_CALLED ( node ) ) { len = SIZE_OP_MEMORY_START_PUSH + tlen + SIZE_OP_CALL + SIZE_OP_JUMP + SIZE_OP_RETURN ; if ( MEM_STATUS_AT0 ( reg -> bt_mem_end , node -> m . regnum ) ) len += ( NODE_IS_RECURSION ( node ) ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_PUSH ) ; else len += ( NODE_IS_RECURSION ( node ) ? SIZE_OP_MEMORY_END_REC : SIZE_OP_MEMORY_END ) ; } else if ( NODE_IS_RECURSION ( node ) ) { len = SIZE_OP_MEMORY_START_PUSH ; len += tlen + ( MEM_STATUS_AT0 ( reg -> bt_mem_end , node -> m . regnum ) ? SIZE_OP_MEMORY_END_PUSH_REC : SIZE_OP_MEMORY_END_REC ) ; } else # endif { if ( MEM_STATUS_AT0 ( reg -> bt_mem_start , node -> m . regnum ) ) len = SIZE_OP_MEMORY_START_PUSH ; else len = SIZE_OP_MEMORY_START ; len += tlen + ( MEM_STATUS_AT0 ( reg -> bt_mem_end , node -> m . regnum ) ? SIZE_OP_MEMORY_END_PUSH : SIZE_OP_MEMORY_END ) ; } break ; case BAG_STOP_BACKTRACK : if ( NODE_IS_STOP_BT_SIMPLE_REPEAT ( node ) ) { int v ; QuantNode * qn ; qn = QUANT_ ( NODE_BAG_BODY ( node ) ) ; tlen = compile_length_tree ( NODE_QUANT_BODY ( qn ) , reg ) ; if ( tlen < 0 ) return tlen ; v = onig_positive_int_multiply ( qn -> lower , tlen ) ; if ( v < 0 ) return ONIGERR_TOO_BIG_NUMBER_FOR_REPEAT_RANGE ; len = v + SIZE_OP_PUSH + tlen + SIZE_OP_POP_OUT + SIZE_OP_JUMP ; } else { len = SIZE_OP_ATOMIC_START + tlen + SIZE_OP_ATOMIC_END ; } break ; case BAG_IF_ELSE : { Node * cond = NODE_BAG_BODY ( node ) ; Node * Then = node -> te . Then ; Node * Else = node -> te . Else ; len = compile_length_tree ( cond , reg ) ; if ( len < 0 ) return len ; len += SIZE_OP_PUSH ; len += SIZE_OP_ATOMIC_START + SIZE_OP_ATOMIC_END ; if ( IS_NOT_NULL ( Then ) ) { tlen = compile_length_tree ( Then , reg ) ; if ( tlen < 0 ) return tlen ; len += tlen ; } <S2SV_StartBug> if ( IS_NOT_NULL ( Else ) ) { <S2SV_EndBug> <S2SV_StartBug> len += SIZE_OP_JUMP ; <S2SV_EndBug> tlen = compile_length_tree ( Else , reg ) ; if ( tlen < 0 ) return tlen ; len += tlen ; } } break ; case BAG_OPTION : len = 0 ; break ; } return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tlen ; } len += SIZE_OP_JUMP + SIZE_OP_ATOMIC_END ; <S2SV_ModStart> ) ) { <S2SV_ModEnd> tlen = compile_length_tree\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3610\n\n```\nCWE-000 static int handle_wrmsr ( struct kvm_vcpu * vcpu ) { struct msr_data msr ; u32 ecx = vcpu -> arch . regs [ VCPU_REGS_RCX ] ; u64 data = ( vcpu -> arch . regs [ VCPU_REGS_RAX ] & - 1u ) | ( ( u64 ) ( vcpu -> arch . regs [ VCPU_REGS_RDX ] & - 1u ) << 32 ) ; msr . data = data ; msr . index = ecx ; msr . host_initiated = false ; <S2SV_StartBug> if ( vmx_set_msr ( vcpu , & msr ) != 0 ) { <S2SV_EndBug> trace_kvm_msr_write_ex ( ecx , data ) ; kvm_inject_gp ( vcpu , 0 ) ; return 1 ; } trace_kvm_msr_write ( ecx , data ) ; skip_emulated_instruction ( vcpu ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( kvm_set_msr <S2SV_ModEnd> ( vcpu ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-74(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-14954\n\n```\nCWE-74 static int smtp_open ( struct Connection * conn , bool esmtp ) { int rc ; if ( mutt_socket_open ( conn ) ) return - 1 ; rc = smtp_get_resp ( conn ) ; if ( rc != 0 ) return rc ; rc = smtp_helo ( conn , esmtp ) ; if ( rc != 0 ) return rc ; # ifdef USE_SSL enum QuadOption ans = MUTT_NO ; if ( conn -> ssf ) ans = MUTT_NO ; else if ( C_SslForceTls ) ans = MUTT_YES ; else if ( ( Capabilities & SMTP_CAP_STARTTLS ) && ( ( ans = query_quadoption ( C_SslStarttls , _ ( \"Secure<S2SV_blank>connection<S2SV_blank>with<S2SV_blank>TLS?\" ) ) ) == MUTT_ABORT ) ) { return - 1 ; } if ( ans == MUTT_YES ) { if ( mutt_socket_send ( conn , \"STARTTLS\\\\r\\\\n\" ) < 0 ) return SMTP_ERR_WRITE ; <S2SV_StartBug> rc = smtp_get_resp ( conn ) ; <S2SV_EndBug> if ( rc != 0 ) return rc ; if ( mutt_ssl_starttls ( conn ) ) { mutt_error ( _ ( \"Could<S2SV_blank>not<S2SV_blank>negotiate<S2SV_blank>TLS<S2SV_blank>connection\" ) ) ; return - 1 ; } rc = smtp_helo ( conn , esmtp ) ; if ( rc != 0 ) return rc ; } # endif if ( conn -> account . flags & MUTT_ACCT_USER ) { if ( ! ( Capabilities & SMTP_CAP_AUTH ) ) { mutt_error ( _ ( \"SMTP<S2SV_blank>server<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>authentication\" ) ) ; return - 1 ; } return smtp_auth ( conn ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rc = smtp_get_resp ( conn ) ; mutt_socket_empty\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7191\n\n```\nCWE-416 void fe_netjoin_deinit ( void ) { while ( joinservers != NULL ) netjoin_server_remove ( joinservers -> data ) ; if ( join_tag != - 1 ) { g_source_remove ( join_tag ) ; signal_remove ( \"print<S2SV_blank>starting\" , ( SIGNAL_FUNC ) sig_print_starting ) ; } signal_remove ( \"setup<S2SV_blank>changed\" , ( SIGNAL_FUNC ) read_settings ) ; <S2SV_StartBug> signal_remove ( \"message<S2SV_blank>quit\" , ( SIGNAL_FUNC ) msg_quit ) ; <S2SV_EndBug> signal_remove ( \"message<S2SV_blank>join\" , ( SIGNAL_FUNC ) msg_join ) ; signal_remove ( \"message<S2SV_blank>irc<S2SV_blank>mode\" , ( SIGNAL_FUNC ) msg_mode ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; signal_remove ( \"server<S2SV_blank>disconnected\" , ( SIGNAL_FUNC ) sig_server_disconnected ) ; signal_remove (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-8428\n\n```\nCWE-416 <S2SV_StartBug> static int may_create_in_sticky ( struct dentry * const dir , <S2SV_EndBug> struct inode * const inode ) { if ( ( ! sysctl_protected_fifos && S_ISFIFO ( inode -> i_mode ) ) || ( ! sysctl_protected_regular && S_ISREG ( inode -> i_mode ) ) || <S2SV_StartBug> likely ( ! ( dir -> d_inode -> i_mode & S_ISVTX ) ) || <S2SV_EndBug> <S2SV_StartBug> uid_eq ( inode -> i_uid , dir -> d_inode -> i_uid ) || <S2SV_EndBug> uid_eq ( current_fsuid ( ) , inode -> i_uid ) ) return 0 ; <S2SV_StartBug> if ( likely ( dir -> d_inode -> i_mode & 0002 ) || <S2SV_EndBug> <S2SV_StartBug> ( dir -> d_inode -> i_mode & 0020 && <S2SV_EndBug> ( ( sysctl_protected_fifos >= 2 && S_ISFIFO ( inode -> i_mode ) ) || ( sysctl_protected_regular >= 2 && S_ISREG ( inode -> i_mode ) ) ) ) ) { const char * operation = S_ISFIFO ( inode -> i_mode ) ? \"sticky_create_fifo\" : \"sticky_create_regular\" ; audit_log_path_denied ( AUDIT_ANOM_CREAT , operation ) ; return - EACCES ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int may_create_in_sticky ( umode_t dir_mode , kuid_t dir_uid <S2SV_ModEnd> , struct inode <S2SV_ModStart> ( ! ( dir_mode <S2SV_ModEnd> & S_ISVTX ) <S2SV_ModStart> -> i_uid , dir_uid <S2SV_ModEnd> ) || uid_eq <S2SV_ModStart> ( likely ( dir_mode <S2SV_ModEnd> & 0002 ) <S2SV_ModStart> ) || ( dir_mode <S2SV_ModEnd> & 0020 &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12652\n\n```\nCWE-362 static int <S2SV_StartBug> mptctl_fw_download ( unsigned long arg ) <S2SV_EndBug> { struct mpt_fw_xfer __user * ufwdl = ( void __user * ) arg ; struct mpt_fw_xfer kfwdl ; if ( copy_from_user ( & kfwdl , ufwdl , sizeof ( struct mpt_fw_xfer ) ) ) { printk ( KERN_ERR MYNAM \"%s@%d::_ioctl_fwdl<S2SV_blank>-<S2SV_blank>\" \"Unable<S2SV_blank>to<S2SV_blank>copy<S2SV_blank>mpt_fw_xfer<S2SV_blank>struct<S2SV_blank>@<S2SV_blank>%p\\\\n\" , __FILE__ , __LINE__ , ufwdl ) ; return - EFAULT ; } <S2SV_StartBug> return mptctl_do_fw_download ( kfwdl . iocnum , kfwdl . bufp , kfwdl . fwlen ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int mptctl_fw_download ( MPT_ADAPTER * iocp , <S2SV_ModStart> return mptctl_do_fw_download ( iocp <S2SV_ModEnd> , kfwdl .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-358(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7177\n\n```\nCWE-358 static void DefragTrackerInit ( DefragTracker * dt , Packet * p ) { COPY_ADDRESS ( & p -> src , & dt -> src_addr ) ; COPY_ADDRESS ( & p -> dst , & dt -> dst_addr ) ; if ( PKT_IS_IPV4 ( p ) ) { dt -> id = ( int32_t ) IPV4_GET_IPID ( p ) ; dt -> af = AF_INET ; } else { dt -> id = ( int32_t ) IPV6_EXTHDR_GET_FH_ID ( p ) ; dt -> af = AF_INET6 ; } <S2SV_StartBug> dt -> vlan_id [ 0 ] = p -> vlan_id [ 0 ] ; <S2SV_EndBug> dt -> vlan_id [ 1 ] = p -> vlan_id [ 1 ] ; dt -> policy = DefragGetOsPolicy ( p ) ; dt -> host_timeout = DefragPolicyGetHostTimeout ( p ) ; dt -> remove = 0 ; dt -> seen_last = 0 ; TAILQ_INIT ( & dt -> frags ) ; ( void ) DefragTrackerIncrUsecnt ( dt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } dt -> proto = IP_GET_IPPROTO ( p ) ; dt ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rc_postencode_update_drop_frame ( VP9_COMP * cpi ) { update_buffer_level ( cpi , 0 ) ; <S2SV_StartBug> cpi -> common . last_frame_type = cpi -> common . frame_type ; <S2SV_EndBug> cpi -> rc . frames_since_key ++ ; cpi -> rc . frames_to_key -- ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; cpi -> <S2SV_ModEnd> rc . frames_since_key <S2SV_ModStart> frames_to_key -- ; cpi -> rc . rc_2_frame = 0 ; cpi -> rc . rc_1_frame = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20182\n\n```\nCWE-119 static int process_plane ( uint8 * in , int width , int height , uint8 * out , int size ) { UNUSED ( size ) ; int indexw ; int indexh ; int code ; int collen ; int replen ; int color ; int x ; int revcode ; uint8 * last_line ; uint8 * this_line ; uint8 * org_in ; uint8 * org_out ; org_in = in ; org_out = out ; last_line = 0 ; indexh = 0 ; while ( indexh < height ) { out = ( org_out + width * height * 4 ) - ( ( indexh + 1 ) * width * 4 ) ; color = 0 ; this_line = out ; indexw = 0 ; if ( last_line == 0 ) { while ( indexw < width ) { code = CVAL ( in ) ; replen = code & 0xf ; collen = ( code >> 4 ) & 0xf ; revcode = ( replen << 4 ) | collen ; if ( ( revcode <= 47 ) && ( revcode >= 16 ) ) { replen = revcode ; collen = 0 ; } <S2SV_StartBug> while ( collen > 0 ) <S2SV_EndBug> { color = CVAL ( in ) ; * out = color ; out += 4 ; indexw ++ ; collen -- ; } <S2SV_StartBug> while ( replen > 0 ) <S2SV_EndBug> { * out = color ; out += 4 ; indexw ++ ; replen -- ; } } } else { while ( indexw < width ) { code = CVAL ( in ) ; replen = code & 0xf ; collen = ( code >> 4 ) & 0xf ; revcode = ( replen << 4 ) | collen ; if ( ( revcode <= 47 ) && ( revcode >= 16 ) ) { replen = revcode ; collen = 0 ; } <S2SV_StartBug> while ( collen > 0 ) <S2SV_EndBug> { x = CVAL ( in ) ; if ( x & 1 ) { x = x >> 1 ; x = x + 1 ; color = - x ; } else { x = x >> 1 ; color = x ; } x = last_line [ indexw * 4 ] + color ; * out = x ; out += 4 ; indexw ++ ; collen -- ; } <S2SV_StartBug> while ( replen > 0 ) <S2SV_EndBug> { x = last_line [ indexw * 4 ] + color ; * out = x ; out += 4 ; indexw ++ ; replen -- ; } } } indexh ++ ; last_line = this_line ; } return ( int ) ( in - org_in ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } while ( indexw < width && <S2SV_ModStart> } while ( indexw < width && <S2SV_ModStart> } while ( indexw < width && <S2SV_ModStart> } while ( indexw < width &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 <S2SV_StartBug> void <S2SV_EndBug> pci_populate_msicap ( struct msicap * msicap , int msgnum , int nextptr ) { int mmc ; <S2SV_StartBug> assert ( ( msgnum & ( msgnum - 1 ) ) == 0 && msgnum >= 1 && msgnum <= 32 ) ; <S2SV_EndBug> mmc = ffs ( msgnum ) - 1 ; bzero ( msicap , sizeof ( struct msicap ) ) ; msicap -> capid = PCIY_MSI ; msicap -> nextptr = nextptr ; msicap -> msgctrl = PCIM_MSICTRL_64BIT | ( mmc << 1 ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> int <S2SV_ModEnd> pci_populate_msicap ( struct <S2SV_ModStart> int mmc ; if ( <S2SV_ModEnd> ( ( msgnum <S2SV_ModStart> 1 ) ) != 0 ) || msgnum < 1 || msgnum > 32 ) { pr_err ( \"%s:<S2SV_blank>invalid<S2SV_blank>number<S2SV_blank>of<S2SV_blank>msi<S2SV_blank>messages!\\\\n\" , __func__ ) ; return - 1 ; } <S2SV_ModEnd> mmc = ffs <S2SV_ModStart> 1 ) ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8958\n\n```\nCWE-125 static Image * ReadSUNImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define RMT_EQUAL_RGB 1 # define RMT_NONE 0 # define RMT_RAW 2 # define RT_STANDARD 1 # define RT_ENCODED 2 # define RT_FORMAT_RGB 3 typedef struct _SUNInfo { unsigned int magic , width , height , depth , length , type , maptype , maplength ; } SUNInfo ; Image * image ; int bit ; MagickBooleanType status ; MagickSizeType number_pixels ; register Quantum * q ; register ssize_t i , x ; register unsigned char * p ; size_t bytes_per_line , extent , height , length ; ssize_t count , y ; SUNInfo sun_info ; unsigned char * sun_data , * sun_pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & sun_info , 0 , sizeof ( sun_info ) ) ; sun_info . magic = ReadBlobMSBLong ( image ) ; do { if ( sun_info . magic != 0x59a66a95 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; sun_info . width = ReadBlobMSBLong ( image ) ; sun_info . height = ReadBlobMSBLong ( image ) ; sun_info . depth = ReadBlobMSBLong ( image ) ; sun_info . length = ReadBlobMSBLong ( image ) ; sun_info . type = ReadBlobMSBLong ( image ) ; sun_info . maptype = ReadBlobMSBLong ( image ) ; sun_info . maplength = ReadBlobMSBLong ( image ) ; extent = sun_info . height * sun_info . width ; if ( ( sun_info . height != 0 ) && ( sun_info . width != extent / sun_info . height ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . type != RT_STANDARD ) && ( sun_info . type != RT_ENCODED ) && ( sun_info . type != RT_FORMAT_RGB ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype == RMT_NONE ) && ( sun_info . maplength != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . depth == 0 ) || ( sun_info . depth > 32 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( sun_info . maptype != RMT_NONE ) && ( sun_info . maptype != RMT_EQUAL_RGB ) && ( sun_info . maptype != RMT_RAW ) ) ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; image -> depth = sun_info . depth <= 8 ? sun_info . depth : MAGICKCORE_QUANTUM_DEPTH ; if ( sun_info . depth < 24 ) { size_t one ; image -> colors = sun_info . maplength ; one = 1 ; if ( sun_info . maptype == RMT_NONE ) image -> colors = one << sun_info . depth ; if ( sun_info . maptype == RMT_EQUAL_RGB ) image -> colors = sun_info . maplength / 3 ; if ( AcquireImageColormap ( image , image -> colors , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } switch ( sun_info . maptype ) { case RMT_NONE : break ; case RMT_EQUAL_RGB : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( image -> colors , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; count = ReadBlob ( image , image -> colors , sun_colormap ) ; if ( count != ( ssize_t ) image -> colors ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( sun_colormap [ i ] ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } case RMT_RAW : { unsigned char * sun_colormap ; sun_colormap = ( unsigned char * ) AcquireQuantumMemory ( sun_info . maplength , sizeof ( * sun_colormap ) ) ; if ( sun_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , sun_info . maplength , sun_colormap ) ; if ( count != ( ssize_t ) sun_info . maplength ) ThrowReaderException ( CorruptImageError , \"UnexpectedEndOfFile\" ) ; sun_colormap = ( unsigned char * ) RelinquishMagickMemory ( sun_colormap ) ; break ; } default : ThrowReaderException ( CoderError , \"ColormapTypeNotSupported\" ) ; } image -> alpha_trait = sun_info . depth == 32 ? BlendPixelTrait : UndefinedPixelTrait ; image -> columns = sun_info . width ; image -> rows = sun_info . height ; if ( image_info -> ping != MagickFalse ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( ( sun_info . length * sizeof ( * sun_data ) ) / sizeof ( * sun_data ) != sun_info . length || ! sun_info . length ) <S2SV_StartBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_EndBug> number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; if ( ( sun_info . type != RT_ENCODED ) && ( ( number_pixels * sun_info . depth ) > ( 8 * sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bytes_per_line = sun_info . width * sun_info . depth ; sun_data = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) MagickMax ( sun_info . length , bytes_per_line * sun_info . width ) , sizeof ( * sun_data ) ) ; if ( sun_data == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ( ssize_t ) ReadBlob ( image , sun_info . length , sun_data ) ; if ( count != ( ssize_t ) sun_info . length ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; height = sun_info . height ; if ( ( height == 0 ) || ( sun_info . width == 0 ) || ( sun_info . depth == 0 ) || ( ( bytes_per_line / sun_info . depth ) != sun_info . width ) ) <S2SV_StartBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_EndBug> bytes_per_line += 15 ; bytes_per_line <<= 1 ; if ( ( bytes_per_line >> 1 ) != ( sun_info . width * sun_info . depth + 15 ) ) <S2SV_StartBug> ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_EndBug> bytes_per_line >>= 4 ; sun_pixels = ( unsigned char * ) AcquireQuantumMemory ( height , bytes_per_line * sizeof ( * sun_pixels ) ) ; if ( sun_pixels == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( sun_info . type == RT_ENCODED ) ( void ) DecodeImage ( sun_data , sun_info . length , sun_pixels , bytes_per_line * <S2SV_StartBug> height ) ; <S2SV_EndBug> sun_data = ( unsigned char * ) RelinquishMagickMemory ( sun_data ) ; p = sun_pixels ; if ( sun_info . depth == 1 ) for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 7 ; bit >= 0 ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 7 ; bit >= ( int ) ( 8 - ( image -> columns % 8 ) ) ; bit -- ) { SetPixelIndex ( image , ( Quantum ) ( ( * p ) & ( 0x01 << bit ) ? 0x00 : 0x01 ) , q ) ; q += GetPixelChannels ( image ) ; } p ++ ; } if ( ( ( ( image -> columns / 8 ) + ( image -> columns % 8 ? 1 : 0 ) ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } else if ( image -> storage_class == PseudoClass ) { if ( bytes_per_line == 0 ) bytes_per_line = image -> columns ; length = image -> rows * ( image -> columns + image -> columns % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( ( image -> columns % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { size_t bytes_per_pixel ; bytes_per_pixel = 3 ; if ( image -> alpha_trait != UndefinedPixelTrait ) bytes_per_pixel ++ ; if ( bytes_per_line == 0 ) bytes_per_line = bytes_per_pixel * image -> columns ; length = image -> rows * ( bytes_per_line + bytes_per_line % 2 ) ; if ( ( ( sun_info . type == RT_ENCODED ) && ( length > ( bytes_per_line * image -> rows ) ) ) || ( ( sun_info . type != RT_ENCODED ) && ( length > sun_info . length ) ) ) ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( sun_info . type == RT_STANDARD ) { SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } else { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; } if ( image -> colors != 0 ) { SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelRed ( image , q ) ] . red ) , q ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelGreen ( image , q ) ] . green ) , q ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) GetPixelBlue ( image , q ) ] . blue ) , q ) ; } q += GetPixelChannels ( image ) ; } if ( ( ( bytes_per_pixel * image -> columns ) % 2 ) != 0 ) p ++ ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } if ( image -> storage_class == PseudoClass ) ( void ) SyncImage ( image , exception ) ; sun_pixels = ( unsigned char * ) RelinquishMagickMemory ( sun_pixels ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; sun_info . magic = ReadBlobMSBLong ( image ) ; if ( sun_info . magic == 0x59a66a95 ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( sun_info . magic == 0x59a66a95 ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ResourceLimitError , \"ImproperImageHeader\" <S2SV_ModEnd> ) ; number_pixels <S2SV_ModStart> ( ResourceLimitError , \"ImproperImageHeader\" <S2SV_ModEnd> ) ; bytes_per_line <S2SV_ModStart> ( ResourceLimitError , \"ImproperImageHeader\" <S2SV_ModEnd> ) ; bytes_per_line <S2SV_ModStart> height ) ; else { if ( sun_info . length > ( height * bytes_per_line ) ) ThrowReaderException ( ResourceLimitError , \"ImproperImageHeader\" ) ; ( void ) CopyMagickMemory ( sun_pixels , sun_data , sun_info . length ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7913\n\n```\nCWE-416 static int xc2028_set_config ( struct dvb_frontend * fe , void * priv_cfg ) { struct xc2028_data * priv = fe -> tuner_priv ; struct xc2028_ctrl * p = priv_cfg ; int rc = 0 ; tuner_dbg ( \"%s<S2SV_blank>called\\\\n\" , __func__ ) ; mutex_lock ( & priv -> lock ) ; kfree ( priv -> ctrl . fname ) ; <S2SV_StartBug> memcpy ( & priv -> ctrl , p , sizeof ( priv -> ctrl ) ) ; <S2SV_EndBug> if ( p -> fname ) { priv -> ctrl . fname = kstrdup ( p -> fname , GFP_KERNEL ) ; if ( priv -> ctrl . fname == NULL ) <S2SV_StartBug> rc = - ENOMEM ; <S2SV_EndBug> } if ( ! firmware_name [ 0 ] && p -> fname && priv -> fname && strcmp ( p -> fname , priv -> fname ) ) free_firmware ( priv ) ; if ( priv -> ctrl . max_len < 9 ) priv -> ctrl . max_len = 13 ; if ( priv -> state == XC2028_NO_FIRMWARE ) { if ( ! firmware_name [ 0 ] ) priv -> fname = priv -> ctrl . fname ; else priv -> fname = firmware_name ; rc = request_firmware_nowait ( THIS_MODULE , 1 , priv -> fname , priv -> i2c_props . adap -> dev . parent , GFP_KERNEL , fe , load_firmware_cb ) ; if ( rc < 0 ) { tuner_err ( \"Failed<S2SV_blank>to<S2SV_blank>request<S2SV_blank>firmware<S2SV_blank>%s\\\\n\" , priv -> fname ) ; priv -> state = XC2028_NODEV ; } else priv -> state = XC2028_WAITING_FIRMWARE ; } mutex_unlock ( & priv -> lock ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fname ) ; priv -> ctrl . fname = NULL ; <S2SV_ModStart> == NULL ) return <S2SV_ModEnd> - ENOMEM ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19075\n\n```\nCWE-401 static int ca8210_probe ( struct spi_device * spi_device ) { struct ca8210_priv * priv ; struct ieee802154_hw * hw ; struct ca8210_platform_data * pdata ; int ret ; dev_info ( & spi_device -> dev , \"Inserting<S2SV_blank>ca8210\\\\n\" ) ; hw = ieee802154_alloc_hw ( sizeof ( struct ca8210_priv ) , & ca8210_phy_ops ) ; if ( ! hw ) { dev_crit ( & spi_device -> dev , \"ieee802154_alloc_hw<S2SV_blank>failed\\\\n\" ) ; ret = - ENOMEM ; goto error ; } priv = hw -> priv ; priv -> hw = hw ; priv -> spi = spi_device ; hw -> parent = & spi_device -> dev ; spin_lock_init ( & priv -> lock ) ; priv -> async_tx_pending = false ; priv -> hw_registered = false ; priv -> sync_up = 0 ; priv -> sync_down = 0 ; priv -> promiscuous = false ; priv -> retries = 0 ; init_completion ( & priv -> ca8210_is_awake ) ; init_completion ( & priv -> spi_transfer_complete ) ; init_completion ( & priv -> sync_exchange_complete ) ; spi_set_drvdata ( priv -> spi , priv ) ; if ( IS_ENABLED ( CONFIG_IEEE802154_CA8210_DEBUGFS ) ) { cascoda_api_upstream = ca8210_test_int_driver_write ; ca8210_test_interface_init ( priv ) ; } else { cascoda_api_upstream = NULL ; } ca8210_hw_setup ( hw ) ; ieee802154_random_extended_addr ( & hw -> phy -> perm_extended_addr ) ; pdata = kmalloc ( sizeof ( * pdata ) , GFP_KERNEL ) ; if ( ! pdata ) { ret = - ENOMEM ; goto error ; } <S2SV_StartBug> ret = ca8210_get_platform_data ( priv -> spi , pdata ) ; <S2SV_EndBug> if ( ret ) { dev_crit ( & spi_device -> dev , \"ca8210_get_platform_data<S2SV_blank>failed\\\\n\" ) ; goto error ; } priv -> spi -> dev . platform_data = pdata ; <S2SV_StartBug> ret = ca8210_dev_com_init ( priv ) ; <S2SV_EndBug> if ( ret ) { dev_crit ( & spi_device -> dev , \"ca8210_dev_com_init<S2SV_blank>failed\\\\n\" ) ; goto error ; } ret = ca8210_reset_init ( priv -> spi ) ; if ( ret ) { dev_crit ( & spi_device -> dev , \"ca8210_reset_init<S2SV_blank>failed\\\\n\" ) ; goto error ; } ret = ca8210_interrupt_init ( priv -> spi ) ; if ( ret ) { dev_crit ( & spi_device -> dev , \"ca8210_interrupt_init<S2SV_blank>failed\\\\n\" ) ; goto error ; } msleep ( 100 ) ; ca8210_reset_send ( priv -> spi , 1 ) ; ret = tdme_chipinit ( priv -> spi ) ; if ( ret ) { dev_crit ( & spi_device -> dev , \"tdme_chipinit<S2SV_blank>failed\\\\n\" ) ; goto error ; } if ( pdata -> extclockenable ) { ret = ca8210_config_extern_clk ( pdata , priv -> spi , 1 ) ; if ( ret ) { dev_crit ( & spi_device -> dev , \"ca8210_config_extern_clk<S2SV_blank>failed\\\\n\" ) ; goto error ; } ret = ca8210_register_ext_clock ( priv -> spi ) ; if ( ret ) { dev_crit ( & spi_device -> dev , \"ca8210_register_ext_clock<S2SV_blank>failed\\\\n\" ) ; goto error ; } } ret = ieee802154_register_hw ( hw ) ; if ( ret ) { dev_crit ( & spi_device -> dev , \"ieee802154_register_hw<S2SV_blank>failed\\\\n\" ) ; goto error ; } priv -> hw_registered = true ; return 0 ; error : msleep ( 100 ) ; ca8210_remove ( spi_device ) ; return link_to_linux_err ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> error ; } <S2SV_ModEnd> priv -> spi <S2SV_ModStart> ; ret = ca8210_get_platform_data ( priv -> spi , pdata ) ; if ( ret ) { dev_crit ( & spi_device -> dev , \"ca8210_get_platform_data<S2SV_blank>failed\\\\n\" ) ; goto error ; } ret =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5350\n\n```\nCWE-399 static int dissect_spoolss_keybuffer ( tvbuff_t * tvb , int offset , packet_info * pinfo , proto_tree * tree , dcerpc_info * di , guint8 * drep ) { guint32 size ; int end_offset ; if ( di -> conformant_run ) return offset ; offset = dissect_ndr_uint32 ( tvb , offset , pinfo , tree , di , drep , hf_keybuffer_size , & size ) ; end_offset = offset + ( size * 2 ) ; if ( end_offset < offset ) { end_offset = tvb_reported_length_remaining ( tvb , offset ) + 1 ; } <S2SV_StartBug> while ( offset < end_offset ) <S2SV_EndBug> offset = dissect_spoolss_uint16uni ( tvb , offset , pinfo , tree , drep , NULL , hf_keybuffer ) ; <S2SV_StartBug> return offset ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( offset > 0 && offset <S2SV_ModStart> < end_offset ) { <S2SV_ModStart> hf_keybuffer ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8754\n\n```\nCWE-125 int libevt_record_values_read_event ( libevt_record_values_t * record_values , uint8_t * record_data , size_t record_data_size , uint8_t strict_mode , libcerror_error_t * * error ) { static char * function = \"libevt_record_values_read_event\" ; size_t record_data_offset = 0 ; size_t strings_data_offset = 0 ; ssize_t value_data_size = 0 ; uint32_t data_offset = 0 ; uint32_t data_size = 0 ; uint32_t members_data_size = 0 ; uint32_t size = 0 ; uint32_t size_copy = 0 ; uint32_t strings_offset = 0 ; uint32_t strings_size = 0 ; uint32_t user_sid_offset = 0 ; uint32_t user_sid_size = 0 ; # if defined ( HAVE_DEBUG_OUTPUT ) uint32_t value_32bit = 0 ; uint16_t value_16bit = 0 ; # endif if ( record_values == NULL ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_ARGUMENTS , LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE , \"%s:<S2SV_blank>invalid<S2SV_blank>record<S2SV_blank>values.\" , function ) ; return ( - 1 ) ; } if ( record_data == NULL ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_ARGUMENTS , LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE , \"%s:<S2SV_blank>invalid<S2SV_blank>record<S2SV_blank>data.\" , function ) ; return ( - 1 ) ; } if ( record_data_size > ( size_t ) SSIZE_MAX ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_ARGUMENTS , LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM , \"%s:<S2SV_blank>invalid<S2SV_blank>record<S2SV_blank>data<S2SV_blank>size<S2SV_blank>value<S2SV_blank>exceeds<S2SV_blank>maximum.\" , function ) ; return ( - 1 ) ; } if ( record_data_size < ( sizeof ( evt_record_event_header_t ) + 4 ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>record<S2SV_blank>data<S2SV_blank>size<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; return ( - 1 ) ; } byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> size , size ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> record_number , record_values -> number ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> creation_time , record_values -> creation_time ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> written_time , record_values -> written_time ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> event_identifier , record_values -> event_identifier ) ; byte_stream_copy_to_uint16_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> event_type , record_values -> event_type ) ; byte_stream_copy_to_uint16_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> event_category , record_values -> event_category ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> strings_offset , strings_offset ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> user_sid_size , user_sid_size ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> user_sid_offset , user_sid_offset ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> data_size , data_size ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> data_offset , data_offset ) ; byte_stream_copy_to_uint32_little_endian ( & ( record_data [ record_data_size - 4 ] ) , size_copy ) ; # if defined ( HAVE_DEBUG_OUTPUT ) if ( libcnotify_verbose != 0 ) { libcnotify_printf ( \"%s:<S2SV_blank>size\\\\t\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , size ) ; libcnotify_printf ( \"%s:<S2SV_blank>signature\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%c%c%c%c\\\\n\" , function , ( ( evt_record_event_header_t * ) record_data ) -> signature [ 0 ] , ( ( evt_record_event_header_t * ) record_data ) -> signature [ 1 ] , ( ( evt_record_event_header_t * ) record_data ) -> signature [ 2 ] , ( ( evt_record_event_header_t * ) record_data ) -> signature [ 3 ] ) ; libcnotify_printf ( \"%s:<S2SV_blank>record<S2SV_blank>number\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , record_values -> number ) ; if ( libevt_debug_print_posix_time_value ( function , \"creation<S2SV_blank>time\\\\t\\\\t\\\\t\\\\t\" , ( ( evt_record_event_header_t * ) record_data ) -> creation_time , 4 , LIBFDATETIME_ENDIAN_LITTLE , LIBFDATETIME_POSIX_TIME_VALUE_TYPE_SECONDS_32BIT_SIGNED , LIBFDATETIME_STRING_FORMAT_TYPE_CTIME | LIBFDATETIME_STRING_FORMAT_FLAG_DATE_TIME , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_PRINT_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>print<S2SV_blank>POSIX<S2SV_blank>time<S2SV_blank>value.\" , function ) ; goto on_error ; } if ( libevt_debug_print_posix_time_value ( function , \"written<S2SV_blank>time\\\\t\\\\t\\\\t\\\\t\" , ( ( evt_record_event_header_t * ) record_data ) -> written_time , 4 , LIBFDATETIME_ENDIAN_LITTLE , LIBFDATETIME_POSIX_TIME_VALUE_TYPE_SECONDS_32BIT_SIGNED , LIBFDATETIME_STRING_FORMAT_TYPE_CTIME | LIBFDATETIME_STRING_FORMAT_FLAG_DATE_TIME , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_PRINT_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>print<S2SV_blank>POSIX<S2SV_blank>time<S2SV_blank>value.\" , function ) ; goto on_error ; } libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>identifier\\\\t\\\\t\\\\t:<S2SV_blank>0x%08\" PRIx32 \"\\\\n\" , function , record_values -> event_identifier ) ; libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>identifier:<S2SV_blank>code\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , record_values -> event_identifier & 0x0000ffffUL ) ; libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>identifier:<S2SV_blank>facility\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , ( record_values -> event_identifier & 0x0fff0000UL ) >> 16 ) ; libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>identifier:<S2SV_blank>reserved\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , ( record_values -> event_identifier & 0x10000000UL ) >> 28 ) ; libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>identifier:<S2SV_blank>customer<S2SV_blank>flags\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , ( record_values -> event_identifier & 0x20000000UL ) >> 29 ) ; libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>identifier:<S2SV_blank>severity\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"<S2SV_blank>(\" , function , ( record_values -> event_identifier & 0xc0000000UL ) >> 30 ) ; libevt_debug_print_event_identifier_severity ( record_values -> event_identifier ) ; libcnotify_printf ( \")\\\\n\" ) ; libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>type\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu16 \"<S2SV_blank>(\" , function , record_values -> event_type ) ; libevt_debug_print_event_type ( record_values -> event_type ) ; libcnotify_printf ( \")\\\\n\" ) ; byte_stream_copy_to_uint16_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> number_of_strings , value_16bit ) ; libcnotify_printf ( \"%s:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>strings\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu16 \"\\\\n\" , function , value_16bit ) ; libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>category\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu16 \"\\\\n\" , function , record_values -> event_category ) ; byte_stream_copy_to_uint16_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> event_flags , value_16bit ) ; libcnotify_printf ( \"%s:<S2SV_blank>event<S2SV_blank>flags\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>0x%04\" PRIx16 \"\\\\n\" , function , value_16bit ) ; byte_stream_copy_to_uint32_little_endian ( ( ( evt_record_event_header_t * ) record_data ) -> closing_record_number , value_32bit ) ; libcnotify_printf ( \"%s:<S2SV_blank>closing<S2SV_blank>record<S2SV_blank>values<S2SV_blank>number\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , value_32bit ) ; libcnotify_printf ( \"%s:<S2SV_blank>strings<S2SV_blank>offset\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , strings_offset ) ; libcnotify_printf ( \"%s:<S2SV_blank>user<S2SV_blank>security<S2SV_blank>identifier<S2SV_blank>(SID)<S2SV_blank>size\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , user_sid_size ) ; libcnotify_printf ( \"%s:<S2SV_blank>user<S2SV_blank>security<S2SV_blank>identifier<S2SV_blank>(SID)<S2SV_blank>offset\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , user_sid_offset ) ; libcnotify_printf ( \"%s:<S2SV_blank>data<S2SV_blank>size\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , data_size ) ; libcnotify_printf ( \"%s:<S2SV_blank>data<S2SV_blank>offset\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , data_offset ) ; } # endif record_data_offset = sizeof ( evt_record_event_header_t ) ; if ( ( user_sid_offset == 0 ) && ( user_sid_size != 0 ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>user<S2SV_blank>SID<S2SV_blank>offset<S2SV_blank>or<S2SV_blank>size<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } if ( user_sid_offset != 0 ) { if ( ( ( size_t ) user_sid_offset < record_data_offset ) || ( ( size_t ) user_sid_offset >= ( record_data_size - 4 ) ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>user<S2SV_blank>SID<S2SV_blank>offset<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } if ( user_sid_size != 0 ) { if ( ( size_t ) ( user_sid_offset + user_sid_size ) > ( record_data_size - 4 ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>user<S2SV_blank>SID<S2SV_blank>size<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } } } if ( ( ( size_t ) strings_offset < user_sid_offset ) || ( ( size_t ) strings_offset >= ( record_data_size - 4 ) ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>strings<S2SV_blank>offset<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } if ( ( ( size_t ) data_offset < strings_offset ) || ( ( size_t ) data_offset >= ( record_data_size - 4 ) ) ) { if ( data_size != 0 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>data<S2SV_blank>offset<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } data_offset = ( uint32_t ) record_data_size - 4 ; } if ( ( ( size_t ) strings_offset >= ( record_data_size - 4 ) ) && ( strings_offset != data_offset ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>strings<S2SV_blank>offset<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } if ( strings_offset != 0 ) { if ( strings_offset < record_data_offset ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>strings<S2SV_blank>offset<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } } if ( user_sid_offset != 0 ) { members_data_size = user_sid_offset - ( uint32_t ) record_data_offset ; } else if ( strings_offset != 0 ) { members_data_size = strings_offset - ( uint32_t ) record_data_offset ; } if ( strings_offset != 0 ) { strings_size = data_offset - strings_offset ; } if ( data_size != 0 ) { if ( ( size_t ) ( data_offset + data_size ) > ( record_data_size - 4 ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>data<S2SV_blank>size<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } } if ( members_data_size != 0 ) { # if defined ( HAVE_DEBUG_OUTPUT ) if ( libcnotify_verbose != 0 ) { libcnotify_printf ( \"%s:<S2SV_blank>members<S2SV_blank>data:\\\\n\" , function ) ; libcnotify_print_data ( & ( record_data [ record_data_offset ] ) , members_data_size , LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA ) ; } # endif if ( libfvalue_value_type_initialize ( & ( record_values -> source_name ) , LIBFVALUE_VALUE_TYPE_STRING_UTF16 , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>source<S2SV_blank>name<S2SV_blank>value.\" , function ) ; goto on_error ; } value_data_size = libfvalue_value_type_set_data_string ( record_values -> source_name , & ( record_data [ record_data_offset ] ) , members_data_size , LIBFVALUE_CODEPAGE_UTF16_LITTLE_ENDIAN , LIBFVALUE_VALUE_DATA_FLAG_MANAGED , error ) ; if ( value_data_size == - 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_SET_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>data<S2SV_blank>of<S2SV_blank>source<S2SV_blank>name<S2SV_blank>value.\" , function ) ; goto on_error ; } # if defined ( HAVE_DEBUG_OUTPUT ) if ( libcnotify_verbose != 0 ) { libcnotify_printf ( \"%s:<S2SV_blank>source<S2SV_blank>name\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>\" , function ) ; if ( libfvalue_value_print ( record_values -> source_name , 0 , 0 , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_PRINT_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>print<S2SV_blank>source<S2SV_blank>name<S2SV_blank>value.\" , function ) ; goto on_error ; } libcnotify_printf ( \"\\\\n\" ) ; } # endif record_data_offset += value_data_size ; members_data_size -= ( uint32_t ) value_data_size ; if ( libfvalue_value_type_initialize ( & ( record_values -> computer_name ) , LIBFVALUE_VALUE_TYPE_STRING_UTF16 , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>computer<S2SV_blank>name<S2SV_blank>value.\" , function ) ; goto on_error ; } value_data_size = libfvalue_value_type_set_data_string ( record_values -> computer_name , & ( record_data [ record_data_offset ] ) , members_data_size , LIBFVALUE_CODEPAGE_UTF16_LITTLE_ENDIAN , LIBFVALUE_VALUE_DATA_FLAG_MANAGED , error ) ; if ( value_data_size == - 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_SET_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>data<S2SV_blank>of<S2SV_blank>computer<S2SV_blank>name<S2SV_blank>value.\" , function ) ; goto on_error ; } # if defined ( HAVE_DEBUG_OUTPUT ) if ( libcnotify_verbose != 0 ) { libcnotify_printf ( \"%s:<S2SV_blank>computer<S2SV_blank>name\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>\" , function ) ; if ( libfvalue_value_print ( record_values -> computer_name , 0 , 0 , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_PRINT_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>print<S2SV_blank>computer<S2SV_blank>name<S2SV_blank>value.\" , function ) ; goto on_error ; } libcnotify_printf ( \"\\\\n\" ) ; } # endif record_data_offset += value_data_size ; members_data_size -= ( uint32_t ) value_data_size ; if ( members_data_size > 0 ) { # if defined ( HAVE_DEBUG_OUTPUT ) if ( libcnotify_verbose != 0 ) { libcnotify_printf ( \"%s:<S2SV_blank>members<S2SV_blank>trailing<S2SV_blank>data:\\\\n\" , function ) ; libcnotify_print_data ( & ( record_data [ record_data_offset ] ) , members_data_size , LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA ) ; } # endif record_data_offset += members_data_size ; } } if ( user_sid_size != 0 ) { <S2SV_StartBug> if ( libfvalue_value_type_initialize ( <S2SV_EndBug> & ( record_values -> user_security_identifier ) , LIBFVALUE_VALUE_TYPE_NT_SECURITY_IDENTIFIER , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>user<S2SV_blank>security<S2SV_blank>identifier<S2SV_blank>(SID)<S2SV_blank>value.\" , function ) ; goto on_error ; } if ( libfvalue_value_set_data ( record_values -> user_security_identifier , & ( record_data [ user_sid_offset ] ) , ( size_t ) user_sid_size , LIBFVALUE_ENDIAN_LITTLE , LIBFVALUE_VALUE_DATA_FLAG_MANAGED , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_SET_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>data<S2SV_blank>of<S2SV_blank>user<S2SV_blank>security<S2SV_blank>identifier<S2SV_blank>(SID)<S2SV_blank>value.\" , function ) ; goto on_error ; } # if defined ( HAVE_DEBUG_OUTPUT ) if ( libcnotify_verbose != 0 ) { libcnotify_printf ( \"%s:<S2SV_blank>user<S2SV_blank>security<S2SV_blank>identifier<S2SV_blank>(SID)\\\\t\\\\t:<S2SV_blank>\" , function ) ; if ( libfvalue_value_print ( record_values -> user_security_identifier , 0 , 0 , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_PRINT_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>print<S2SV_blank>user<S2SV_blank>security<S2SV_blank>identifier<S2SV_blank>(SID)<S2SV_blank>value.\" , function ) ; goto on_error ; } libcnotify_printf ( \"\\\\n\" ) ; } # endif record_data_offset += user_sid_size ; } if ( strings_size != 0 ) <S2SV_StartBug> { <S2SV_EndBug> # if defined ( HAVE_DEBUG_OUTPUT ) if ( libcnotify_verbose != 0 ) { libcnotify_printf ( \"%s:<S2SV_blank>strings<S2SV_blank>data:\\\\n\" , function ) ; libcnotify_print_data ( & ( record_data [ strings_offset ] ) , strings_size , LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA ) ; } # endif if ( size_copy == 0 ) { strings_data_offset = strings_offset + strings_size - 2 ; while ( strings_data_offset > strings_offset ) { if ( ( record_data [ strings_data_offset ] != 0 ) || ( record_data [ strings_data_offset + 1 ] != 0 ) ) { strings_size += 2 ; break ; } strings_data_offset -= 2 ; strings_size -= 2 ; } } if ( libfvalue_value_type_initialize ( & ( record_values -> strings ) , LIBFVALUE_VALUE_TYPE_STRING_UTF16 , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>strings<S2SV_blank>value.\" , function ) ; goto on_error ; } value_data_size = libfvalue_value_type_set_data_strings_array ( record_values -> strings , & ( record_data [ strings_offset ] ) , strings_size , LIBFVALUE_CODEPAGE_UTF16_LITTLE_ENDIAN , error ) ; if ( value_data_size == - 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_SET_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>data<S2SV_blank>of<S2SV_blank>strings<S2SV_blank>value.\" , function ) ; goto on_error ; } record_data_offset += strings_size ; } if ( data_size != 0 ) { <S2SV_StartBug> # if defined ( HAVE_DEBUG_OUTPUT ) <S2SV_EndBug> if ( libcnotify_verbose != 0 ) { libcnotify_printf ( \"%s:<S2SV_blank>data:\\\\n\" , function ) ; libcnotify_print_data ( <S2SV_StartBug> & ( record_data [ data_offset ] ) , <S2SV_EndBug> ( size_t ) data_size , LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA ) ; } # endif if ( libfvalue_value_type_initialize ( & ( record_values -> data ) , LIBFVALUE_VALUE_TYPE_BINARY_DATA , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_INITIALIZE_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>data<S2SV_blank>value.\" , function ) ; goto on_error ; } if ( libfvalue_value_set_data ( record_values -> data , & ( record_data [ record_data_offset ] ) , ( size_t ) data_size , LIBFVALUE_ENDIAN_LITTLE , LIBFVALUE_VALUE_DATA_FLAG_MANAGED , error ) != 1 ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_SET_FAILED , \"%s:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>data<S2SV_blank>of<S2SV_blank>data<S2SV_blank>value.\" , function ) ; goto on_error ; } # if defined ( HAVE_DEBUG_OUTPUT ) record_data_offset += data_size ; # endif } # if defined ( HAVE_DEBUG_OUTPUT ) if ( libcnotify_verbose != 0 ) { if ( record_data_offset < ( record_data_size - 4 ) ) { libcnotify_printf ( \"%s:<S2SV_blank>padding:\\\\n\" , function ) ; libcnotify_print_data ( & ( record_data [ record_data_offset ] ) , ( size_t ) record_data_size - record_data_offset - 4 , LIBCNOTIFY_PRINT_DATA_FLAG_GROUP_DATA ) ; } libcnotify_printf ( \"%s:<S2SV_blank>size<S2SV_blank>copy\\\\t\\\\t\\\\t\\\\t:<S2SV_blank>%\" PRIu32 \"\\\\n\" , function , size_copy ) ; libcnotify_printf ( \"\\\\n\" ) ; } # endif if ( ( strict_mode == 0 ) && ( size_copy == 0 ) ) { size_copy = size ; } if ( size != size_copy ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_INPUT , LIBCERROR_INPUT_ERROR_VALUE_MISMATCH , \"%s:<S2SV_blank>value<S2SV_blank>mismatch<S2SV_blank>for<S2SV_blank>size<S2SV_blank>and<S2SV_blank>size<S2SV_blank>copy.\" , function ) ; goto on_error ; } if ( record_data_size != ( size_t ) size ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_INPUT , LIBCERROR_INPUT_ERROR_VALUE_MISMATCH , \"%s:<S2SV_blank>value<S2SV_blank>mismatch<S2SV_blank>for<S2SV_blank>record_values<S2SV_blank>data<S2SV_blank>size<S2SV_blank>and<S2SV_blank>size.\" , function ) ; goto on_error ; } return ( 1 ) ; on_error : if ( record_values -> data != NULL ) { libfvalue_value_free ( & ( record_values -> data ) , NULL ) ; } if ( record_values -> strings != NULL ) { libfvalue_value_free ( & ( record_values -> strings ) , NULL ) ; } if ( record_values -> user_security_identifier != NULL ) { libfvalue_value_free ( & ( record_values -> user_security_identifier ) , NULL ) ; } if ( record_values -> computer_name != NULL ) { libfvalue_value_free ( & ( record_values -> computer_name ) , NULL ) ; } if ( record_values -> source_name != NULL ) { libfvalue_value_free ( & ( record_values -> source_name ) , NULL ) ; } return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( user_sid_size > ( ( record_data_size - 4 ) - user_sid_offset ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>user<S2SV_blank>SID<S2SV_blank>data<S2SV_blank>size<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } if ( <S2SV_ModStart> 0 ) { if ( strings_size > ( ( record_data_size - 4 ) - strings_offset ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>strings<S2SV_blank>size<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } <S2SV_ModStart> 0 ) { if ( data_size > ( ( record_data_size - 4 ) - data_offset ) ) { libcerror_error_set ( error , LIBCERROR_ERROR_DOMAIN_RUNTIME , LIBCERROR_RUNTIME_ERROR_VALUE_OUT_OF_BOUNDS , \"%s:<S2SV_blank>data<S2SV_blank>size<S2SV_blank>value<S2SV_blank>out<S2SV_blank>of<S2SV_blank>bounds.\" , function ) ; goto on_error ; } <S2SV_ModStart> ( record_data [ record_data_offset <S2SV_ModEnd> ] ) ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1805\n\n```\nCWE-17 static ssize_t pipe_read ( struct kiocb * iocb , const struct iovec * _iov , unsigned long nr_segs , loff_t pos ) { struct file * filp = iocb -> ki_filp ; struct pipe_inode_info * pipe = filp -> private_data ; int do_wakeup ; ssize_t ret ; struct iovec * iov = ( struct iovec * ) _iov ; size_t total_len ; <S2SV_StartBug> total_len = iov_length ( iov , nr_segs ) ; <S2SV_EndBug> if ( unlikely ( total_len == 0 ) ) <S2SV_StartBug> return 0 ; <S2SV_EndBug> do_wakeup = 0 ; ret = 0 ; __pipe_lock ( pipe ) ; for ( ; ; ) { int bufs = pipe -> nrbufs ; if ( bufs ) { int curbuf = pipe -> curbuf ; struct pipe_buffer * buf = pipe -> bufs + curbuf ; const struct pipe_buf_operations * ops = buf -> ops ; <S2SV_StartBug> void * addr ; <S2SV_EndBug> <S2SV_StartBug> size_t chars = buf -> len ; <S2SV_EndBug> <S2SV_StartBug> int error , atomic ; <S2SV_EndBug> if ( chars > total_len ) chars = total_len ; error = ops -> confirm ( pipe , buf ) ; if ( error ) { if ( ! ret ) ret = error ; break ; } <S2SV_StartBug> atomic = ! iov_fault_in_pages_write ( iov , chars ) ; <S2SV_EndBug> redo : if ( atomic ) addr = kmap_atomic ( buf -> page ) ; else addr = kmap ( buf -> page ) ; error = pipe_iov_copy_to_user ( iov , addr + buf -> offset , chars , atomic ) ; if ( atomic ) kunmap_atomic ( addr ) ; else kunmap ( buf -> page ) ; if ( unlikely ( error ) ) { if ( atomic ) { atomic = 0 ; goto redo ; } if ( ! ret ) ret = error ; break ; } ret += chars ; buf -> offset += chars ; buf -> len -= chars ; if ( buf -> flags & PIPE_BUF_FLAG_PACKET ) { total_len = chars ; buf -> len = 0 ; } if ( ! buf -> len ) { buf -> ops = NULL ; ops -> release ( pipe , buf ) ; curbuf = ( curbuf + 1 ) & ( pipe -> buffers - 1 ) ; pipe -> curbuf = curbuf ; pipe -> nrbufs = -- bufs ; do_wakeup = 1 ; } total_len -= chars ; if ( ! total_len ) break ; } if ( bufs ) continue ; if ( ! pipe -> writers ) break ; if ( ! pipe -> waiting_writers ) { if ( ret ) break ; if ( filp -> f_flags & O_NONBLOCK ) { ret = - EAGAIN ; break ; } } if ( signal_pending ( current ) ) { if ( ! ret ) ret = - ERESTARTSYS ; break ; } if ( do_wakeup ) { wake_up_interruptible_sync_poll ( & pipe -> wait , POLLOUT | POLLWRNORM ) ; kill_fasync ( & pipe -> fasync_writers , SIGIO , POLL_OUT ) ; } pipe_wait ( pipe ) ; } __pipe_unlock ( pipe ) ; if ( do_wakeup ) { wake_up_interruptible_sync_poll ( & pipe -> wait , POLLOUT | POLLWRNORM ) ; kill_fasync ( & pipe -> fasync_writers , SIGIO , POLL_OUT ) ; } if ( ret > 0 ) file_accessed ( filp ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t total_len ; struct iov_iter iter ; <S2SV_ModStart> ) return 0 ; iov_iter_init ( & iter , iov , nr_segs , total_len , 0 ) <S2SV_ModStart> -> ops ; <S2SV_ModEnd> size_t chars = <S2SV_ModStart> buf -> len ; size_t written <S2SV_ModStart> ; int error <S2SV_ModEnd> ; if ( <S2SV_ModStart> break ; } written = copy_page_to_iter ( buf -> page , buf -> offset , chars , & iter ) ; if ( unlikely ( written < chars ) ) { if ( ! ret ) ret = - EFAULT <S2SV_ModEnd> ; break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int bta_co_rfc_data_outgoing ( void * user_data , uint8_t * buf , uint16_t size ) { pthread_mutex_lock ( & slot_lock ) ; uint32_t id = ( uintptr_t ) user_data ; int ret = false ; rfc_slot_t * slot = find_rfc_slot_by_id ( id ) ; if ( ! slot ) goto out ; <S2SV_StartBug> int received = recv ( slot -> fd , buf , size , 0 ) ; <S2SV_EndBug> if ( received == size ) { ret = true ; } else { LOG_ERROR ( \"%s<S2SV_blank>error<S2SV_blank>receiving<S2SV_blank>RFCOMM<S2SV_blank>data<S2SV_blank>from<S2SV_blank>app:<S2SV_blank>%s\" , __func__ , strerror ( errno ) ) ; cleanup_rfc_slot ( slot ) ; } out : ; pthread_mutex_unlock ( & slot_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int received = TEMP_FAILURE_RETRY ( <S2SV_ModStart> size , 0 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9422\n\n```\nCWE-284 static int check_rpcsec_auth ( struct svc_req * rqstp ) { gss_ctx_id_t ctx ; krb5_context kctx ; OM_uint32 maj_stat , min_stat ; gss_name_t name ; krb5_principal princ ; int ret , success ; krb5_data * c1 , * c2 , * realm ; gss_buffer_desc gss_str ; kadm5_server_handle_t handle ; size_t slen ; char * sdots ; success = 0 ; handle = ( kadm5_server_handle_t ) global_server_handle ; if ( rqstp -> rq_cred . oa_flavor != RPCSEC_GSS ) return 0 ; ctx = rqstp -> rq_svccred ; maj_stat = gss_inquire_context ( & min_stat , ctx , NULL , & name , NULL , NULL , NULL , NULL , NULL ) ; if ( maj_stat != GSS_S_COMPLETE ) { krb5_klog_syslog ( LOG_ERR , _ ( \"check_rpcsec_auth:<S2SV_blank>failed<S2SV_blank>\" \"inquire_context,<S2SV_blank>stat=%u\" ) , maj_stat ) ; log_badauth ( maj_stat , min_stat , rqstp -> rq_xprt , NULL ) ; goto fail_name ; } kctx = handle -> context ; ret = gss_to_krb5_name_1 ( rqstp , kctx , name , & princ , & gss_str ) ; if ( ret == 0 ) goto fail_name ; slen = gss_str . length ; trunc_name ( & slen , & sdots ) ; if ( krb5_princ_size ( kctx , princ ) != 2 ) goto fail_princ ; c1 = krb5_princ_component ( kctx , princ , 0 ) ; c2 = krb5_princ_component ( kctx , princ , 1 ) ; realm = krb5_princ_realm ( kctx , princ ) ; <S2SV_StartBug> if ( strncmp ( handle -> params . realm , realm -> data , realm -> length ) == 0 <S2SV_EndBug> && strncmp ( \"kadmin\" , c1 -> data , c1 -> length ) == 0 ) { if ( strncmp ( \"history\" , c2 -> data , c2 -> length ) == 0 ) goto fail_princ ; else success = 1 ; } fail_princ : if ( ! success ) { krb5_klog_syslog ( LOG_ERR , _ ( \"bad<S2SV_blank>service<S2SV_blank>principal<S2SV_blank>%.*s%s\" ) , ( int ) slen , ( char * ) gss_str . value , sdots ) ; } gss_release_buffer ( & min_stat , & gss_str ) ; krb5_free_principal ( kctx , princ ) ; fail_name : gss_release_name ( & min_stat , & name ) ; return success ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> princ ) ; success = data_eq_string ( * realm , <S2SV_ModEnd> handle -> params <S2SV_ModStart> params . realm ) && data_eq_string ( * c1 , \"kadmin\" ) && ! data_eq_string ( * c2 , \"history\" ) ; <S2SV_ModEnd> fail_princ : if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8067\n\n```\nCWE-119 static int put_chars ( u32 vtermno , const char * buf , int count ) { struct port * port ; <S2SV_StartBug> struct scatterlist sg [ 1 ] ; <S2SV_EndBug> if ( unlikely ( early_put_chars ) ) return early_put_chars ( vtermno , buf , count ) ; port = find_port_by_vtermno ( vtermno ) ; if ( ! port ) return - EPIPE ; <S2SV_StartBug> sg_init_one ( sg , buf , count ) ; <S2SV_EndBug> <S2SV_StartBug> return __send_to_port ( port , sg , 1 , count , ( void * ) buf , false ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ 1 ] ; void * data ; int ret <S2SV_ModStart> - EPIPE ; data = kmemdup ( buf , count , GFP_ATOMIC ) ; if ( ! data ) return - ENOMEM ; <S2SV_ModStart> ( sg , data <S2SV_ModEnd> , count ) <S2SV_ModStart> count ) ; ret = <S2SV_ModEnd> __send_to_port ( port <S2SV_ModStart> , count , data <S2SV_ModEnd> , false ) <S2SV_ModStart> false ) ; kfree ( data ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9996\n\n```\nCWE-119 static int cdxl_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * pkt ) { CDXLVideoContext * c = avctx -> priv_data ; AVFrame * const p = data ; int ret , w , h , encoding , aligned_width , buf_size = pkt -> size ; const uint8_t * buf = pkt -> data ; if ( buf_size < 32 ) return AVERROR_INVALIDDATA ; encoding = buf [ 1 ] & 7 ; c -> format = buf [ 1 ] & 0xE0 ; w = AV_RB16 ( & buf [ 14 ] ) ; h = AV_RB16 ( & buf [ 16 ] ) ; c -> bpp = buf [ 19 ] ; c -> palette_size = AV_RB16 ( & buf [ 20 ] ) ; c -> palette = buf + 32 ; c -> video = c -> palette + c -> palette_size ; c -> video_size = buf_size - c -> palette_size - 32 ; if ( c -> palette_size > 512 ) return AVERROR_INVALIDDATA ; if ( buf_size < c -> palette_size + 32 ) return AVERROR_INVALIDDATA ; if ( c -> bpp < 1 ) return AVERROR_INVALIDDATA ; if ( c -> format != BIT_PLANAR && c -> format != BIT_LINE && c -> format != CHUNKY ) { avpriv_request_sample ( avctx , \"Pixel<S2SV_blank>format<S2SV_blank>0x%0x\" , c -> format ) ; return AVERROR_PATCHWELCOME ; } if ( ( ret = ff_set_dimensions ( avctx , w , h ) ) < 0 ) return ret ; if ( c -> format == CHUNKY ) aligned_width = avctx -> width ; else aligned_width = FFALIGN ( c -> avctx -> width , 16 ) ; c -> padded_bits = aligned_width - c -> avctx -> width ; if ( c -> video_size < aligned_width * avctx -> height * ( int64_t ) c -> bpp / 8 ) return AVERROR_INVALIDDATA ; <S2SV_StartBug> if ( ! encoding && c -> palette_size && c -> bpp <= 8 ) { <S2SV_EndBug> avctx -> pix_fmt = AV_PIX_FMT_PAL8 ; } else if ( encoding == 1 && ( c -> bpp == 6 || c -> bpp == 8 ) ) { if ( c -> palette_size != ( 1 << ( c -> bpp - 1 ) ) ) return AVERROR_INVALIDDATA ; avctx -> pix_fmt = AV_PIX_FMT_BGR24 ; } else if ( ! encoding && c -> bpp == 24 && c -> format == CHUNKY && ! c -> palette_size ) { avctx -> pix_fmt = AV_PIX_FMT_RGB24 ; } else { avpriv_request_sample ( avctx , \"Encoding<S2SV_blank>%d,<S2SV_blank>bpp<S2SV_blank>%d<S2SV_blank>and<S2SV_blank>format<S2SV_blank>0x%x\" , encoding , c -> bpp , c -> format ) ; return AVERROR_PATCHWELCOME ; } if ( ( ret = ff_get_buffer ( avctx , p , 0 ) ) < 0 ) return ret ; p -> pict_type = AV_PICTURE_TYPE_I ; if ( encoding ) { av_fast_padded_malloc ( & c -> new_video , & c -> new_video_size , h * w + AV_INPUT_BUFFER_PADDING_SIZE ) ; if ( ! c -> new_video ) return AVERROR ( ENOMEM ) ; if ( c -> bpp == 8 ) cdxl_decode_ham8 ( c , p ) ; else cdxl_decode_ham6 ( c , p ) ; } else if ( avctx -> pix_fmt == AV_PIX_FMT_PAL8 ) { cdxl_decode_rgb ( c , p ) ; } else { cdxl_decode_raw ( c , p ) ; } * got_frame = 1 ; return buf_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bpp <= 8 && c -> format != CHUNKY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 static int peer_recv_callback ( rdpTransport * transport , wStream * s , void * extra ) { freerdp_peer * client = ( freerdp_peer * ) extra ; rdpRdp * rdp = client -> context -> rdp ; switch ( rdp -> state ) { case CONNECTION_STATE_INITIAL : if ( ! rdp_server_accept_nego ( rdp , s ) ) return - 1 ; if ( rdp -> nego -> selected_protocol & PROTOCOL_NLA ) { sspi_CopyAuthIdentity ( & client -> identity , & ( rdp -> nego -> transport -> credssp -> identity ) ) ; IFCALLRET ( client -> Logon , client -> authenticated , client , & client -> identity , TRUE ) ; credssp_free ( rdp -> nego -> transport -> credssp ) ; <S2SV_StartBug> } <S2SV_EndBug> else { IFCALLRET ( client -> Logon , client -> authenticated , client , & client -> identity , FALSE ) ; } break ; case CONNECTION_STATE_NEGO : if ( ! rdp_server_accept_mcs_connect_initial ( rdp , s ) ) return - 1 ; break ; case CONNECTION_STATE_MCS_CONNECT : if ( ! rdp_server_accept_mcs_erect_domain_request ( rdp , s ) ) return - 1 ; break ; case CONNECTION_STATE_MCS_ERECT_DOMAIN : if ( ! rdp_server_accept_mcs_attach_user_request ( rdp , s ) ) return - 1 ; break ; case CONNECTION_STATE_MCS_ATTACH_USER : if ( ! rdp_server_accept_mcs_channel_join_request ( rdp , s ) ) return - 1 ; break ; case CONNECTION_STATE_MCS_CHANNEL_JOIN : if ( rdp -> settings -> DisableEncryption ) { if ( ! rdp_server_accept_client_keys ( rdp , s ) ) return - 1 ; break ; } rdp -> state = CONNECTION_STATE_ESTABLISH_KEYS ; case CONNECTION_STATE_ESTABLISH_KEYS : if ( ! rdp_server_accept_client_info ( rdp , s ) ) return - 1 ; IFCALL ( client -> Capabilities , client ) ; if ( ! rdp_send_demand_active ( rdp ) ) return - 1 ; break ; case CONNECTION_STATE_LICENSE : if ( ! rdp_server_accept_confirm_active ( rdp , s ) ) { Stream_SetPosition ( s , 0 ) ; return peer_recv_pdu ( client , s ) ; } break ; case CONNECTION_STATE_ACTIVE : if ( peer_recv_pdu ( client , s ) < 0 ) return - 1 ; break ; default : fprintf ( stderr , \"Invalid<S2SV_blank>state<S2SV_blank>%d\\\\n\" , rdp -> state ) ; return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> credssp ) ; rdp -> nego -> transport -> credssp = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18249\n\n```\nCWE-362 static bool add_free_nid ( struct f2fs_sb_info * sbi , nid_t nid , bool build ) { struct f2fs_nm_info * nm_i = NM_I ( sbi ) ; <S2SV_StartBug> struct free_nid * i ; <S2SV_EndBug> struct nat_entry * ne ; <S2SV_StartBug> int err ; <S2SV_EndBug> if ( unlikely ( nid == 0 ) ) return false ; <S2SV_StartBug> if ( build ) { <S2SV_EndBug> ne = __lookup_nat_cache ( nm_i , nid ) ; if ( ne && ( ! get_nat_flag ( ne , IS_CHECKPOINTED ) || nat_get_blkaddr ( ne ) != NULL_ADDR ) ) <S2SV_StartBug> return false ; <S2SV_EndBug> } i = f2fs_kmem_cache_alloc ( free_nid_slab , GFP_NOFS ) ; i -> nid = nid ; i -> state = NID_NEW ; if ( radix_tree_preload ( GFP_NOFS ) ) { kmem_cache_free ( free_nid_slab , i ) ; return true ; } spin_lock ( & nm_i -> nid_list_lock ) ; err = __insert_nid_to_list ( sbi , i , FREE_NID_LIST , true ) ; spin_unlock ( & nm_i -> nid_list_lock ) ; radix_tree_preload_end ( ) ; if ( err ) { kmem_cache_free ( free_nid_slab , i ) ; return true ; } return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> free_nid * i , * e <S2SV_ModStart> ; int err = - EINVAL ; bool ret = false <S2SV_ModStart> return false ; i = f2fs_kmem_cache_alloc ( free_nid_slab , GFP_NOFS ) ; i -> nid = nid ; i -> state = NID_NEW ; if ( radix_tree_preload ( GFP_NOFS ) ) goto err ; spin_lock ( & nm_i -> nid_list_lock ) ; <S2SV_ModStart> NULL_ADDR ) ) goto err_out ; e = __lookup_free_nid_list ( nm_i , nid ) ; if ( e ) { if ( e -> state == NID_NEW ) ret = true ; goto err_out ; } } ret = true ; err = __insert_nid_to_list ( sbi , i , FREE_NID_LIST , true ) ; err_out : spin_unlock ( & nm_i -> nid_list_lock ) ; radix_tree_preload_end ( ) ; err : if ( err ) kmem_cache_free ( free_nid_slab , i ) ; return ret <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7294\n\n```\nCWE-20 stf_status ikev2parent_inI1outR1 ( struct msg_digest * md ) { struct state * st = md -> st ; lset_t policy = POLICY_IKEV2_ALLOW ; struct connection * c = find_host_connection ( & md -> iface -> ip_addr , md -> iface -> port , & md -> sender , md -> sender_port , POLICY_IKEV2_ALLOW ) ; # if 0 if ( c == NULL ) { pb_stream pre_sa_pbs = sa_pd -> pbs ; policy = preparse_isakmp_sa_body ( & pre_sa_pbs ) ; c = find_host_connection ( & md -> iface -> ip_addr , pluto_port , ( ip_address * ) NULL , md -> sender_port , policy ) ; } # endif if ( c == NULL ) { { struct connection * d ; d = find_host_connection ( & md -> iface -> ip_addr , pluto_port , ( ip_address * ) NULL , md -> sender_port , policy ) ; for ( ; d != NULL ; d = d -> hp_next ) { if ( d -> kind == CK_GROUP ) { } else { if ( d -> kind == CK_TEMPLATE && ! ( d -> policy & POLICY_OPPO ) ) { c = d ; break ; } if ( addrinsubnet ( & md -> sender , & d -> spd . that . client ) && ( c == NULL || ! subnetinsubnet ( & c -> spd . that . client , & d -> spd . that . client ) ) ) c = d ; } } } if ( c == NULL ) { loglog ( RC_LOG_SERIOUS , \"initial<S2SV_blank>parent<S2SV_blank>SA<S2SV_blank>message<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s:%u\" \"<S2SV_blank>but<S2SV_blank>no<S2SV_blank>connection<S2SV_blank>has<S2SV_blank>been<S2SV_blank>authorized%s%s\" , ip_str ( & md -> iface -> ip_addr ) , ntohs ( portof ( & md -> iface -> ip_addr ) ) , ( policy != LEMPTY ) ? \"<S2SV_blank>with<S2SV_blank>policy=\" : \"\" , ( policy != LEMPTY ) ? bitnamesof ( sa_policy_bit_names , policy ) : \"\" ) ; return STF_FAIL + v2N_NO_PROPOSAL_CHOSEN ; } if ( c -> kind != CK_TEMPLATE ) { loglog ( RC_LOG_SERIOUS , \"initial<S2SV_blank>parent<S2SV_blank>SA<S2SV_blank>message<S2SV_blank>received<S2SV_blank>on<S2SV_blank>%s:%u\" \"<S2SV_blank>but<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>forbids<S2SV_blank>connection\" , ip_str ( & md -> iface -> ip_addr ) , pluto_port , c -> name ) ; return STF_FAIL + v2N_NO_PROPOSAL_CHOSEN ; } c = rw_instantiate ( c , & md -> sender , NULL , NULL ) ; } else { if ( ( c -> kind == CK_TEMPLATE ) && c -> spd . that . virt ) { DBG ( DBG_CONTROL , DBG_log ( \"local<S2SV_blank>endpoint<S2SV_blank>has<S2SV_blank>virt<S2SV_blank>(vnet/vhost)<S2SV_blank>set<S2SV_blank>without<S2SV_blank>wildcards<S2SV_blank>-<S2SV_blank>needs<S2SV_blank>instantiation\" ) ) ; c = rw_instantiate ( c , & md -> sender , NULL , NULL ) ; } else if ( ( c -> kind == CK_TEMPLATE ) && ( c -> policy & POLICY_IKEV2_ALLOW_NARROWING ) ) { DBG ( DBG_CONTROL , DBG_log ( \"local<S2SV_blank>endpoint<S2SV_blank>has<S2SV_blank>narrowing=yes<S2SV_blank>-<S2SV_blank>needs<S2SV_blank>instantiation\" ) ) ; c = rw_instantiate ( c , & md -> sender , NULL , NULL ) ; } } DBG_log ( \"found<S2SV_blank>connection:<S2SV_blank>%s\\\\n\" , c ? c -> name : \"<none>\" ) ; if ( ! st ) { st = new_state ( ) ; memcpy ( st -> st_icookie , md -> hdr . isa_icookie , COOKIE_SIZE ) ; get_cookie ( FALSE , st -> st_rcookie , COOKIE_SIZE , & md -> sender ) ; initialize_new_state ( st , c , policy , 0 , NULL_FD , pcim_stranger_crypto ) ; st -> st_ikev2 = TRUE ; change_state ( st , STATE_PARENT_R1 ) ; st -> st_msgid_lastack = INVALID_MSGID ; st -> st_msgid_nextuse = 0 ; md -> st = st ; md -> from_state = STATE_IKEv2_BASE ; } if ( force_busy == TRUE ) { u_char dcookie [ SHA1_DIGEST_SIZE ] ; chunk_t dc ; ikev2_get_dcookie ( dcookie , st -> st_ni , & md -> sender , st -> st_icookie ) ; dc . ptr = dcookie ; dc . len = SHA1_DIGEST_SIZE ; if ( md -> chain [ ISAKMP_NEXT_v2KE ] && md -> chain [ ISAKMP_NEXT_v2N ] && ( md -> chain [ ISAKMP_NEXT_v2N ] -> payload . v2n . isan_type == v2N_COOKIE ) ) { u_int8_t spisize ; const pb_stream * dc_pbs ; chunk_t blob ; DBG ( DBG_CONTROLMORE , DBG_log ( \"received<S2SV_blank>a<S2SV_blank>DOS<S2SV_blank>cookie<S2SV_blank>in<S2SV_blank>I1<S2SV_blank>verify<S2SV_blank>it\" ) ) ; spisize = md -> chain [ ISAKMP_NEXT_v2N ] -> payload . v2n . isan_spisize ; dc_pbs = & md -> chain [ ISAKMP_NEXT_v2N ] -> pbs ; blob . ptr = dc_pbs -> cur + spisize ; blob . len = pbs_left ( dc_pbs ) - spisize ; DBG ( DBG_CONTROLMORE , DBG_dump_chunk ( \"dcookie<S2SV_blank>received<S2SV_blank>in<S2SV_blank>I1<S2SV_blank>Packet\" , blob ) ; DBG_dump ( \"dcookie<S2SV_blank>computed\" , dcookie , SHA1_DIGEST_SIZE ) ) ; if ( memcmp ( blob . ptr , dcookie , SHA1_DIGEST_SIZE ) != 0 ) { libreswan_log ( \"mismatch<S2SV_blank>in<S2SV_blank>DOS<S2SV_blank>v2N_COOKIE,send<S2SV_blank>a<S2SV_blank>new<S2SV_blank>one\" ) ; SEND_NOTIFICATION_AA ( v2N_COOKIE , & dc ) ; return STF_FAIL + v2N_INVALID_IKE_SPI ; } DBG ( DBG_CONTROLMORE , DBG_log ( \"dcookie<S2SV_blank>received<S2SV_blank>match<S2SV_blank>with<S2SV_blank>computed<S2SV_blank>one\" ) ) ; } else { DBG ( DBG_CONTROLMORE , DBG_log ( \"busy<S2SV_blank>mode<S2SV_blank>on.<S2SV_blank>receieved<S2SV_blank>I1<S2SV_blank>without<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>dcookie\" ) ; DBG_log ( \"send<S2SV_blank>a<S2SV_blank>dcookie<S2SV_blank>and<S2SV_blank>forget<S2SV_blank>this<S2SV_blank>state\" ) ) ; SEND_NOTIFICATION_AA ( v2N_COOKIE , & dc ) ; return STF_FAIL ; } } else { DBG ( DBG_CONTROLMORE , DBG_log ( \"will<S2SV_blank>not<S2SV_blank>send/process<S2SV_blank>a<S2SV_blank>dcookie\" ) ) ; } { struct ikev2_ke * ke ; <S2SV_StartBug> ke = & md -> chain [ ISAKMP_NEXT_v2KE ] -> payload . v2ke ; <S2SV_EndBug> st -> st_oakley . group = lookup_group ( ke -> isak_group ) ; if ( st -> st_oakley . group == NULL ) { char fromname [ ADDRTOT_BUF ] ; addrtot ( & md -> sender , 0 , fromname , ADDRTOT_BUF ) ; <S2SV_StartBug> libreswan_log ( <S2SV_EndBug> \"rejecting<S2SV_blank>I1<S2SV_blank>from<S2SV_blank>%s:%u,<S2SV_blank>invalid<S2SV_blank>DH<S2SV_blank>group=%u\" , fromname , md -> sender_port , ke -> isak_group ) ; <S2SV_StartBug> return v2N_INVALID_KE_PAYLOAD ; <S2SV_EndBug> } } { struct ke_continuation * ke = alloc_thing ( struct ke_continuation , \"ikev2_inI1outR1<S2SV_blank>KE\" ) ; stf_status e ; ke -> md = md ; set_suspended ( st , ke -> md ) ; if ( ! st -> st_sec_in_use ) { pcrc_init ( & ke -> ke_pcrc ) ; ke -> ke_pcrc . pcrc_func = ikev2_parent_inI1outR1_continue ; e = build_ke ( & ke -> ke_pcrc , st , st -> st_oakley . group , pcim_stranger_crypto ) ; if ( e != STF_SUSPEND && e != STF_INLINE ) { loglog ( RC_CRYPTOFAILED , \"system<S2SV_blank>too<S2SV_blank>busy\" ) ; delete_state ( st ) ; } } else { e = ikev2_parent_inI1outR1_tail ( ( struct pluto_crypto_req_cont * ) ke , NULL ) ; } reset_globals ( ) ; return e ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ke ; <S2SV_ModEnd> char fromname [ <S2SV_ModStart> ADDRTOT_BUF ) ; if ( ! md -> chain [ ISAKMP_NEXT_v2KE ] ) { if ( md -> chain [ ISAKMP_NEXT_v2N ] ) { libreswan_log ( \"Received<S2SV_blank>Notify(%d):<S2SV_blank>%s\" , md -> chain [ ISAKMP_NEXT_v2N ] -> payload . v2n . isan_type , enum_name ( & ikev2_notify_names , md -> chain [ ISAKMP_NEXT_v2N ] -> payload . v2n . isan_type ) ) ; } libreswan_log ( \"rejecting<S2SV_blank>I1<S2SV_blank>from<S2SV_blank>%s:%u,<S2SV_blank>no<S2SV_blank>KE<S2SV_blank>payload<S2SV_blank>present\" , fromname , md -> sender_port ) ; return STF_FAIL + v2N_INVALID_KE_PAYLOAD ; } ke = & md -> chain [ ISAKMP_NEXT_v2KE ] -> payload . v2ke ; st -> st_oakley . group = lookup_group ( ke -> isak_group ) ; if ( st -> st_oakley . group == NULL ) { libreswan_log ( <S2SV_ModEnd> \"rejecting<S2SV_blank>I1<S2SV_blank>from<S2SV_blank>%s:%u,<S2SV_blank>invalid<S2SV_blank>DH<S2SV_blank>group=%u\" , fromname <S2SV_ModStart> ) ; return STF_FAIL +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 void __fput_sync ( struct file * file ) { if ( atomic_long_dec_and_test ( & file -> f_count ) ) { struct task_struct * task = current ; <S2SV_StartBug> file_sb_list_del ( file ) ; <S2SV_EndBug> BUG_ON ( ! ( task -> flags & PF_KTHREAD ) ) ; __fput ( file ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = current ; <S2SV_ModEnd> BUG_ON ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-6978\n\n```\nCWE-415 void * gdImageWBMPPtr ( gdImagePtr im , int * size , int fg ) { void * rv ; gdIOCtx * out = gdNewDynamicCtx ( 2048 , NULL ) ; <S2SV_StartBug> gdImageWBMPCtx ( im , fg , out ) ; <S2SV_EndBug> <S2SV_StartBug> rv = gdDPExtractData ( out , size ) ; <S2SV_EndBug> out -> gd_free ( out ) ; return rv ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; if ( ! _gdImageWBMPCtx <S2SV_ModEnd> ( im , <S2SV_ModStart> , out ) ) { <S2SV_ModEnd> rv = gdDPExtractData <S2SV_ModStart> size ) ; } else { rv = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadCINImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define MonoColorType 1 # define RGBColorType 3 char property [ MaxTextExtent ] ; CINInfo cin ; Image * image ; MagickBooleanType status ; MagickOffsetType offset ; QuantumInfo * quantum_info ; QuantumType quantum_type ; register ssize_t i ; register PixelPacket * q ; size_t length ; ssize_t count , y ; unsigned char magick [ 4 ] , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } offset = 0 ; count = ReadBlob ( image , 4 , magick ) ; offset += count ; if ( ( count != 4 ) || ( ( LocaleNCompare ( ( char * ) magick , \"\\\\200\\\\052\\\\137\\\\327\" , 4 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> endian = ( magick [ 0 ] == 0x80 ) && ( magick [ 1 ] == 0x2a ) && ( magick [ 2 ] == 0x5f ) && ( magick [ 3 ] == 0xd7 ) ? MSBEndian : LSBEndian ; cin . file . image_offset = ReadBlobLong ( image ) ; offset += 4 ; cin . file . generic_length = ReadBlobLong ( image ) ; offset += 4 ; cin . file . industry_length = ReadBlobLong ( image ) ; offset += 4 ; cin . file . user_length = ReadBlobLong ( image ) ; offset += 4 ; cin . file . file_size = ReadBlobLong ( image ) ; offset += 4 ; offset += ReadBlob ( image , sizeof ( cin . file . version ) , ( unsigned char * ) cin . file . version ) ; ( void ) CopyMagickString ( property , cin . file . version , sizeof ( cin . file . version ) ) ; ( void ) SetImageProperty ( image , \"dpx:file.version\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . file . filename ) , ( unsigned char * ) cin . file . filename ) ; ( void ) CopyMagickString ( property , cin . file . filename , sizeof ( cin . file . filename ) ) ; ( void ) SetImageProperty ( image , \"dpx:file.filename\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . file . create_date ) , ( unsigned char * ) cin . file . create_date ) ; ( void ) CopyMagickString ( property , cin . file . create_date , sizeof ( cin . file . create_date ) ) ; ( void ) SetImageProperty ( image , \"dpx:file.create_date\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . file . create_time ) , ( unsigned char * ) cin . file . create_time ) ; ( void ) CopyMagickString ( property , cin . file . create_time , sizeof ( cin . file . create_time ) ) ; ( void ) SetImageProperty ( image , \"dpx:file.create_time\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . file . reserve ) , ( unsigned char * ) cin . file . reserve ) ; cin . image . orientation = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; if ( cin . image . orientation != ( unsigned char ) ( ~ 0 ) ) ( void ) FormatImageProperty ( image , \"dpx:image.orientation\" , \"%d\" , cin . image . orientation ) ; switch ( cin . image . orientation ) { default : case 0 : image -> orientation = TopLeftOrientation ; break ; case 1 : image -> orientation = TopRightOrientation ; break ; case 2 : image -> orientation = BottomLeftOrientation ; break ; case 3 : image -> orientation = BottomRightOrientation ; break ; case 4 : image -> orientation = LeftTopOrientation ; break ; case 5 : image -> orientation = RightTopOrientation ; break ; case 6 : image -> orientation = LeftBottomOrientation ; break ; case 7 : image -> orientation = RightBottomOrientation ; break ; } cin . image . number_channels = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; offset += ReadBlob ( image , sizeof ( cin . image . reserve1 ) , ( unsigned char * ) cin . image . reserve1 ) ; for ( i = 0 ; i < 8 ; i ++ ) { cin . image . channel [ i ] . designator [ 0 ] = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . image . channel [ i ] . designator [ 1 ] = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . image . channel [ i ] . bits_per_pixel = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . image . channel [ i ] . reserve = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . image . channel [ i ] . pixels_per_line = ReadBlobLong ( image ) ; offset += 4 ; cin . image . channel [ i ] . lines_per_image = ReadBlobLong ( image ) ; offset += 4 ; cin . image . channel [ i ] . min_data = ReadBlobFloat ( image ) ; offset += 4 ; cin . image . channel [ i ] . min_quantity = ReadBlobFloat ( image ) ; offset += 4 ; cin . image . channel [ i ] . max_data = ReadBlobFloat ( image ) ; offset += 4 ; cin . image . channel [ i ] . max_quantity = ReadBlobFloat ( image ) ; offset += 4 ; } cin . image . white_point [ 0 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . white_point [ 0 ] ) != MagickFalse ) image -> chromaticity . white_point . x = cin . image . white_point [ 0 ] ; cin . image . white_point [ 1 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . white_point [ 1 ] ) != MagickFalse ) image -> chromaticity . white_point . y = cin . image . white_point [ 1 ] ; cin . image . red_primary_chromaticity [ 0 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . red_primary_chromaticity [ 0 ] ) != MagickFalse ) image -> chromaticity . red_primary . x = cin . image . red_primary_chromaticity [ 0 ] ; cin . image . red_primary_chromaticity [ 1 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . red_primary_chromaticity [ 1 ] ) != MagickFalse ) image -> chromaticity . red_primary . y = cin . image . red_primary_chromaticity [ 1 ] ; cin . image . green_primary_chromaticity [ 0 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . green_primary_chromaticity [ 0 ] ) != MagickFalse ) image -> chromaticity . red_primary . x = cin . image . green_primary_chromaticity [ 0 ] ; cin . image . green_primary_chromaticity [ 1 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . green_primary_chromaticity [ 1 ] ) != MagickFalse ) image -> chromaticity . green_primary . y = cin . image . green_primary_chromaticity [ 1 ] ; cin . image . blue_primary_chromaticity [ 0 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . blue_primary_chromaticity [ 0 ] ) != MagickFalse ) image -> chromaticity . blue_primary . x = cin . image . blue_primary_chromaticity [ 0 ] ; cin . image . blue_primary_chromaticity [ 1 ] = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . image . blue_primary_chromaticity [ 1 ] ) != MagickFalse ) image -> chromaticity . blue_primary . y = cin . image . blue_primary_chromaticity [ 1 ] ; offset += ReadBlob ( image , sizeof ( cin . image . label ) , ( unsigned char * ) cin . image . label ) ; ( void ) CopyMagickString ( property , cin . image . label , sizeof ( cin . image . label ) ) ; ( void ) SetImageProperty ( image , \"dpx:image.label\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . image . reserve ) , ( unsigned char * ) cin . image . reserve ) ; cin . data_format . interleave = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . data_format . packing = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . data_format . sign = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . data_format . sense = ( unsigned char ) ReadBlobByte ( image ) ; offset ++ ; cin . data_format . line_pad = ReadBlobLong ( image ) ; offset += 4 ; cin . data_format . channel_pad = ReadBlobLong ( image ) ; offset += 4 ; offset += ReadBlob ( image , sizeof ( cin . data_format . reserve ) , ( unsigned char * ) cin . data_format . reserve ) ; cin . origination . x_offset = ( int ) ReadBlobLong ( image ) ; offset += 4 ; if ( ( size_t ) cin . origination . x_offset != ~ 0UL ) ( void ) FormatImageProperty ( image , \"dpx:origination.x_offset\" , \"%.20g\" , ( double ) cin . origination . x_offset ) ; cin . origination . y_offset = ( ssize_t ) ReadBlobLong ( image ) ; offset += 4 ; if ( ( size_t ) cin . origination . y_offset != ~ 0UL ) ( void ) FormatImageProperty ( image , \"dpx:origination.y_offset\" , \"%.20g\" , ( double ) cin . origination . y_offset ) ; offset += ReadBlob ( image , sizeof ( cin . origination . filename ) , ( unsigned char * ) cin . origination . filename ) ; ( void ) CopyMagickString ( property , cin . origination . filename , sizeof ( cin . origination . filename ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.filename\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . origination . create_date ) , ( unsigned char * ) cin . origination . create_date ) ; ( void ) CopyMagickString ( property , cin . origination . create_date , sizeof ( cin . origination . create_date ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.create_date\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . origination . create_time ) , ( unsigned char * ) cin . origination . create_time ) ; ( void ) CopyMagickString ( property , cin . origination . create_time , sizeof ( cin . origination . create_time ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.create_time\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . origination . device ) , ( unsigned char * ) cin . origination . device ) ; ( void ) CopyMagickString ( property , cin . origination . device , sizeof ( cin . origination . device ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.device\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . origination . model ) , ( unsigned char * ) cin . origination . model ) ; ( void ) CopyMagickString ( property , cin . origination . model , sizeof ( cin . origination . model ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.model\" , property ) ; ( void ) ResetMagickMemory ( cin . origination . serial , 0 , sizeof ( cin . origination . serial ) ) ; offset += ReadBlob ( image , sizeof ( cin . origination . serial ) , ( unsigned char * ) cin . origination . serial ) ; ( void ) CopyMagickString ( property , cin . origination . serial , sizeof ( cin . origination . serial ) ) ; ( void ) SetImageProperty ( image , \"dpx:origination.serial\" , property ) ; cin . origination . x_pitch = ReadBlobFloat ( image ) ; offset += 4 ; cin . origination . y_pitch = ReadBlobFloat ( image ) ; offset += 4 ; cin . origination . gamma = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . origination . gamma ) != MagickFalse ) image -> gamma = cin . origination . gamma ; offset += ReadBlob ( image , sizeof ( cin . origination . reserve ) , ( unsigned char * ) cin . origination . reserve ) ; if ( ( cin . file . image_offset > 2048 ) && ( cin . file . user_length != 0 ) ) { int c ; cin . film . id = ReadBlobByte ( image ) ; offset ++ ; c = cin . film . id ; if ( c != ~ 0 ) ( void ) FormatImageProperty ( image , \"dpx:film.id\" , \"%d\" , cin . film . id ) ; cin . film . type = ReadBlobByte ( image ) ; offset ++ ; c = cin . film . type ; if ( c != ~ 0 ) ( void ) FormatImageProperty ( image , \"dpx:film.type\" , \"%d\" , cin . film . type ) ; cin . film . offset = ReadBlobByte ( image ) ; offset ++ ; c = cin . film . offset ; if ( c != ~ 0 ) ( void ) FormatImageProperty ( image , \"dpx:film.offset\" , \"%d\" , cin . film . offset ) ; cin . film . reserve1 = ReadBlobByte ( image ) ; offset ++ ; cin . film . prefix = ReadBlobLong ( image ) ; offset += 4 ; if ( cin . film . prefix != ~ 0UL ) ( void ) FormatImageProperty ( image , \"dpx:film.prefix\" , \"%.20g\" , ( double ) cin . film . prefix ) ; cin . film . count = ReadBlobLong ( image ) ; offset += 4 ; offset += ReadBlob ( image , sizeof ( cin . film . format ) , ( unsigned char * ) cin . film . format ) ; ( void ) CopyMagickString ( property , cin . film . format , sizeof ( cin . film . format ) ) ; ( void ) SetImageProperty ( image , \"dpx:film.format\" , property ) ; cin . film . frame_position = ReadBlobLong ( image ) ; offset += 4 ; if ( cin . film . frame_position != ~ 0UL ) ( void ) FormatImageProperty ( image , \"dpx:film.frame_position\" , \"%.20g\" , ( double ) cin . film . frame_position ) ; cin . film . frame_rate = ReadBlobFloat ( image ) ; offset += 4 ; if ( IsFloatDefined ( cin . film . frame_rate ) != MagickFalse ) ( void ) FormatImageProperty ( image , \"dpx:film.frame_rate\" , \"%g\" , cin . film . frame_rate ) ; offset += ReadBlob ( image , sizeof ( cin . film . frame_id ) , ( unsigned char * ) cin . film . frame_id ) ; ( void ) CopyMagickString ( property , cin . film . frame_id , sizeof ( cin . film . frame_id ) ) ; ( void ) SetImageProperty ( image , \"dpx:film.frame_id\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . film . slate_info ) , ( unsigned char * ) cin . film . slate_info ) ; ( void ) CopyMagickString ( property , cin . film . slate_info , sizeof ( cin . film . slate_info ) ) ; ( void ) SetImageProperty ( image , \"dpx:film.slate_info\" , property ) ; offset += ReadBlob ( image , sizeof ( cin . film . reserve ) , ( unsigned char * ) cin . film . reserve ) ; } if ( ( cin . file . image_offset > 2048 ) && ( cin . file . user_length != 0 ) ) { StringInfo * profile ; profile = BlobToStringInfo ( ( const void * ) NULL , cin . file . user_length ) ; if ( profile == ( StringInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; offset += ReadBlob ( image , GetStringInfoLength ( profile ) , GetStringInfoDatum ( profile ) ) ; ( void ) SetImageProfile ( image , \"dpx:user.data\" , profile ) ; profile = DestroyStringInfo ( profile ) ; } for ( ; offset < ( MagickOffsetType ) cin . file . image_offset ; offset ++ ) ( void ) ReadBlobByte ( image ) ; image -> depth = cin . image . channel [ 0 ] . bits_per_pixel ; image -> columns = cin . image . channel [ 0 ] . pixels_per_line ; image -> rows = cin . image . channel [ 0 ] . lines_per_image ; <S2SV_StartBug> if ( image_info -> ping ) <S2SV_EndBug> { ( void ) CloseBlob ( image ) ; <S2SV_StartBug> return ( image ) ; <S2SV_EndBug> } quantum_info = AcquireQuantumInfo ( image_info , image ) ; if ( quantum_info == ( QuantumInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; quantum_info -> quantum = 32 ; quantum_info -> pack = MagickFalse ; quantum_type = RGBQuantum ; pixels = GetQuantumPixels ( quantum_info ) ; length = GetQuantumExtent ( image , quantum_info , quantum_type ) ; length = GetBytesPerRow ( image -> columns , 3 , image -> depth , MagickTrue ) ; if ( cin . image . number_channels == 1 ) { quantum_type = GrayQuantum ; length = GetBytesPerRow ( image -> columns , 1 , image -> depth , MagickTrue ) ; } for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; count = ReadBlob ( image , length , pixels ) ; if ( ( size_t ) count != length ) break ; ( void ) ImportQuantumPixels ( image , ( CacheView * ) NULL , quantum_info , quantum_type , pixels , exception ) ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } SetQuantumImageType ( image , quantum_type ) ; quantum_info = DestroyQuantumInfo ( quantum_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; SetImageColorspace ( image , LogColorspace ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> image_info -> ping != MagickFalse <S2SV_ModStart> return ( image ) ; } status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3183\n\n```\nCWE-119 static int logi_dj_ll_raw_request ( struct hid_device * hid , unsigned char reportnum , __u8 * buf , size_t count , unsigned char report_type , int reqtype ) { struct dj_device * djdev = hid -> driver_data ; struct dj_receiver_dev * djrcv_dev = djdev -> dj_receiver_dev ; u8 * out_buf ; int ret ; if ( buf [ 0 ] != REPORT_TYPE_LEDS ) return - EINVAL ; out_buf = kzalloc ( DJREPORT_SHORT_LENGTH , GFP_ATOMIC ) ; if ( ! out_buf ) return - ENOMEM ; <S2SV_StartBug> if ( count < DJREPORT_SHORT_LENGTH - 2 ) <S2SV_EndBug> count = DJREPORT_SHORT_LENGTH - 2 ; out_buf [ 0 ] = REPORT_ID_DJ_SHORT ; out_buf [ 1 ] = djdev -> device_index ; memcpy ( out_buf + 2 , buf , count ) ; ret = hid_hw_raw_request ( djrcv_dev -> hdev , out_buf [ 0 ] , out_buf , DJREPORT_SHORT_LENGTH , report_type , reqtype ) ; kfree ( out_buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( count > <S2SV_ModEnd> DJREPORT_SHORT_LENGTH - 2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void perf_event_interrupt ( struct pt_regs * regs ) { int i ; struct cpu_hw_events * cpuhw = & __get_cpu_var ( cpu_hw_events ) ; struct perf_event * event ; unsigned long val ; int found = 0 ; int nmi ; nmi = perf_intr_is_nmi ( regs ) ; if ( nmi ) nmi_enter ( ) ; else irq_enter ( ) ; for ( i = 0 ; i < ppmu -> n_counter ; ++ i ) { event = cpuhw -> event [ i ] ; val = read_pmc ( i ) ; if ( ( int ) val < 0 ) { if ( event ) { found = 1 ; <S2SV_StartBug> record_and_restart ( event , val , regs , nmi ) ; <S2SV_EndBug> } else { write_pmc ( i , 0 ) ; } } } mtmsr ( mfmsr ( ) | MSR_PMM ) ; mtpmr ( PMRN_PMGC0 , PMGC0_PMIE | PMGC0_FCECE ) ; isync ( ) ; if ( nmi ) nmi_exit ( ) ; else irq_exit ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val , regs <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5209\n\n```\nCWE-125 unsigned char * base64decode ( const char * buf , size_t * size ) { if ( ! buf || ! size ) return NULL ; size_t len = ( * size > 0 ) ? * size : strlen ( buf ) ; if ( len <= 0 ) return NULL ; unsigned char * outbuf = ( unsigned char * ) malloc ( ( len / 4 ) * 3 + 3 ) ; const char * ptr = buf ; int p = 0 ; <S2SV_StartBug> size_t l = 0 ; <S2SV_EndBug> do { <S2SV_StartBug> ptr += strspn ( ptr , \"\\\\r\\\\n\\\\t<S2SV_blank>\" ) ; <S2SV_EndBug> if ( * ptr == '\\\\0' || ptr >= buf + len ) { break ; } <S2SV_StartBug> l = strcspn ( ptr , \"\\\\r\\\\n\\\\t<S2SV_blank>\" ) ; <S2SV_EndBug> if ( l > 3 && ptr + l <= buf + len ) { p += base64decode_block ( outbuf + p , ptr , l ) ; ptr += l ; } else { break ; } } while ( 1 ) ; outbuf [ p ] = 0 ; * size = p ; return outbuf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; int wv , w1 , w2 , w3 , w4 ; int tmpval [ 4 ] ; int tmpcnt <S2SV_ModEnd> = 0 ; <S2SV_ModStart> ; do { while ( ptr < buf + len && ( * ptr == '<S2SV_blank>' || * ptr == '\\\\t' || * ptr == '\\\\n' || * ptr == '\\\\r' ) ) { ptr ++ ; } <S2SV_ModEnd> if ( * <S2SV_ModStart> break ; } if ( ( wv = base64_table [ ( int ) ( unsigned char ) * ptr ++ ] ) == - 1 ) { continue ; } tmpval [ tmpcnt ++ ] = wv ; if ( tmpcnt == 4 ) { tmpcnt = 0 ; w1 = tmpval [ 0 ] ; w2 = tmpval [ 1 ] ; w3 = tmpval [ 2 ] ; w4 = tmpval [ 3 ] ; if ( w2 >= 0 ) { outbuf [ p ++ ] = ( unsigned char ) ( ( ( w1 << 2 ) + ( w2 >> 4 ) ) & 0xFF ) ; } if ( w3 >= 0 ) { outbuf [ p ++ ] = ( unsigned char ) ( ( ( w2 << 4 ) + ( w3 >> 2 ) ) & 0xFF ) ; } if ( w4 >= 0 ) { outbuf [ p ++ ] = ( unsigned char ) ( ( ( w3 << 6 ) + w4 ) & 0xFF ) ; } <S2SV_ModEnd> } } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5873\n\n```\nCWE-119 static const char * parse_scheme ( struct parse_state * state ) { size_t mb ; const char * tmp = state -> ptr ; do { switch ( * state -> ptr ) { case ':' : state -> url . scheme = & state -> buffer [ 0 ] ; state -> buffer [ state -> offset ++ ] = 0 ; return ++ state -> ptr ; case '0' : case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : case '+' : case '-' : case '.' : if ( state -> ptr == tmp ) { <S2SV_StartBug> return tmp ; <S2SV_EndBug> } case 'A' : case 'B' : case 'C' : case 'D' : case 'E' : case 'F' : case 'G' : case 'H' : case 'I' : case 'J' : case 'K' : case 'L' : case 'M' : case 'N' : case 'O' : case 'P' : case 'Q' : case 'R' : case 'S' : case 'T' : case 'U' : case 'V' : case 'W' : case 'X' : case 'Y' : case 'Z' : case 'a' : case 'b' : case 'c' : case 'd' : case 'e' : case 'f' : case 'g' : case 'h' : case 'i' : case 'j' : case 'k' : case 'l' : case 'm' : case 'n' : case 'o' : case 'p' : case 'q' : case 'r' : case 's' : case 't' : case 'u' : case 'v' : case 'w' : case 'x' : case 'y' : case 'z' : state -> buffer [ state -> offset ++ ] = * state -> ptr ; break ; default : if ( ! ( mb = parse_mb ( state , PARSE_SCHEME , state -> ptr , state -> end , tmp , 1 ) ) ) { <S2SV_StartBug> return tmp ; <S2SV_EndBug> } state -> ptr += mb - 1 ; } } while ( ++ state -> ptr != state -> end ) ; <S2SV_StartBug> return state -> ptr = tmp ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp ) { goto softfail <S2SV_ModEnd> ; } case <S2SV_ModStart> ) ) { goto softfail <S2SV_ModEnd> ; } state <S2SV_ModStart> end ) ; softfail : state -> offset = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7613\n\n```\nCWE-362 int ipc_addid ( struct ipc_ids * ids , struct kern_ipc_perm * new , int size ) { kuid_t euid ; kgid_t egid ; int id ; int next_id = ids -> next_id ; if ( size > IPCMNI ) size = IPCMNI ; if ( ids -> in_use >= size ) return - ENOSPC ; idr_preload ( GFP_KERNEL ) ; spin_lock_init ( & new -> lock ) ; new -> deleted = false ; rcu_read_lock ( ) ; spin_lock ( & new -> lock ) ; <S2SV_StartBug> id = idr_alloc ( & ids -> ipcs_idr , new , <S2SV_EndBug> ( next_id < 0 ) ? 0 : ipcid_to_idx ( next_id ) , 0 , GFP_NOWAIT ) ; idr_preload_end ( ) ; if ( id < 0 ) { spin_unlock ( & new -> lock ) ; rcu_read_unlock ( ) ; return id ; } ids -> in_use ++ ; <S2SV_StartBug> current_euid_egid ( & euid , & egid ) ; <S2SV_EndBug> new -> cuid = new -> uid = euid ; new -> gid = new -> cgid = egid ; if ( next_id < 0 ) { new -> seq = ids -> seq ++ ; if ( ids -> seq > IPCID_SEQ_MAX ) ids -> seq = 0 ; } else { new -> seq = ipcid_to_seqx ( next_id ) ; ids -> next_id = - 1 ; } new -> id = ipc_buildid ( id , new -> seq ) ; return id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lock ) ; current_euid_egid ( & euid , & egid ) ; new -> cuid = new -> uid = euid ; new -> gid = new -> cgid = egid ; <S2SV_ModStart> in_use ++ ; <S2SV_ModEnd> if ( next_id\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3183\n\n```\nCWE-20 apr_status_t ap_http_filter ( ap_filter_t * f , apr_bucket_brigade * b , ap_input_mode_t mode , apr_read_type_e block , apr_off_t readbytes ) { core_server_config * conf ; apr_bucket * e ; http_ctx_t * ctx = f -> ctx ; apr_status_t rv ; apr_off_t totalread ; int again ; conf = ( core_server_config * ) ap_get_module_config ( f -> r -> server -> module_config , & core_module ) ; if ( mode != AP_MODE_READBYTES && mode != AP_MODE_GETLINE ) { return ap_get_brigade ( f -> next , b , mode , block , readbytes ) ; } if ( ! ctx ) { const char * tenc , * lenp ; f -> ctx = ctx = apr_pcalloc ( f -> r -> pool , sizeof ( * ctx ) ) ; ctx -> state = BODY_NONE ; if ( ! f -> r -> proxyreq ) { ctx -> limit = ap_get_limit_req_body ( f -> r ) ; } else { ctx -> limit = 0 ; } tenc = apr_table_get ( f -> r -> headers_in , \"Transfer-Encoding\" ) ; lenp = apr_table_get ( f -> r -> headers_in , \"Content-Length\" ) ; if ( tenc ) { if ( strcasecmp ( tenc , \"chunked\" ) == 0 || ap_find_last_token ( f -> r -> pool , tenc , \"chunked\" ) ) { ctx -> state = BODY_CHUNK ; } else if ( f -> r -> proxyreq == PROXYREQ_RESPONSE ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 02555 ) <S2SV_StartBug> \"Unknown<S2SV_blank>Transfer-Encoding:<S2SV_blank>%s;\" <S2SV_EndBug> \"<S2SV_blank>using<S2SV_blank>read-until-close\" , tenc ) ; tenc = NULL ; } else { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 01585 ) \"Unknown<S2SV_blank>Transfer-Encoding:<S2SV_blank>%s\" , tenc ) ; return APR_EGENERAL ; } lenp = NULL ; } if ( lenp ) { char * endstr ; ctx -> state = BODY_LENGTH ; if ( apr_strtoff ( & ctx -> remaining , lenp , & endstr , 10 ) || endstr == lenp || * endstr || ctx -> remaining < 0 ) { ctx -> remaining = 0 ; ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 01587 ) \"Invalid<S2SV_blank>Content-Length\" ) ; <S2SV_StartBug> return APR_ENOSPC ; <S2SV_EndBug> } if ( ctx -> limit && ctx -> limit < ctx -> remaining ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 01588 ) \"Requested<S2SV_blank>content-length<S2SV_blank>of<S2SV_blank>%\" APR_OFF_T_FMT \"<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>the<S2SV_blank>configured<S2SV_blank>limit\" \"<S2SV_blank>of<S2SV_blank>%\" APR_OFF_T_FMT , ctx -> remaining , ctx -> limit ) ; return APR_ENOSPC ; } } if ( ctx -> state == BODY_NONE && f -> r -> proxyreq != PROXYREQ_RESPONSE ) { e = apr_bucket_eos_create ( f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_TAIL ( b , e ) ; ctx -> eos_sent = 1 ; return APR_SUCCESS ; } if ( ( ctx -> state == BODY_CHUNK || ( ctx -> state == BODY_LENGTH && ctx -> remaining > 0 ) ) && f -> r -> expecting_100 && f -> r -> proto_num >= HTTP_VERSION ( 1 , 1 ) && ! ( f -> r -> eos_sent || f -> r -> bytes_sent ) ) { if ( ! ap_is_HTTP_SUCCESS ( f -> r -> status ) ) { ctx -> state = BODY_NONE ; ctx -> eos_sent = 1 ; } else { char * tmp ; int len ; apr_bucket_brigade * bb ; bb = apr_brigade_create ( f -> r -> pool , f -> c -> bucket_alloc ) ; f -> r -> expecting_100 = 0 ; tmp = apr_pstrcat ( f -> r -> pool , AP_SERVER_PROTOCOL \"<S2SV_blank>\" , ap_get_status_line ( HTTP_CONTINUE ) , CRLF CRLF , NULL ) ; len = strlen ( tmp ) ; ap_xlate_proto_to_ascii ( tmp , len ) ; e = apr_bucket_pool_create ( tmp , len , f -> r -> pool , f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_HEAD ( bb , e ) ; e = apr_bucket_flush_create ( f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_TAIL ( bb , e ) ; rv = ap_pass_brigade ( f -> c -> output_filters , bb ) ; <S2SV_StartBug> if ( rv != APR_SUCCESS ) { <S2SV_EndBug> return AP_FILTER_ERROR ; } } } } if ( ctx -> eos_sent ) { e = apr_bucket_eos_create ( f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_TAIL ( b , e ) ; return APR_SUCCESS ; } do { apr_brigade_cleanup ( b ) ; again = 0 ; switch ( ctx -> state ) { case BODY_CHUNK : case BODY_CHUNK_PART : case BODY_CHUNK_EXT : <S2SV_StartBug> case BODY_CHUNK_END : { <S2SV_EndBug> rv = ap_get_brigade ( f -> next , b , AP_MODE_GETLINE , block , 0 ) ; if ( block == APR_NONBLOCK_READ && ( ( rv == APR_SUCCESS && APR_BRIGADE_EMPTY ( b ) ) || ( APR_STATUS_IS_EAGAIN ( rv ) ) ) ) { return APR_EAGAIN ; } if ( rv == APR_EOF ) { return APR_INCOMPLETE ; } if ( rv != APR_SUCCESS ) { return rv ; } e = APR_BRIGADE_FIRST ( b ) ; while ( e != APR_BRIGADE_SENTINEL ( b ) ) { const char * buffer ; apr_size_t len ; if ( ! APR_BUCKET_IS_METADATA ( e ) ) { rv = apr_bucket_read ( e , & buffer , & len , APR_BLOCK_READ ) ; if ( rv == APR_SUCCESS ) { rv = parse_chunk_size ( ctx , buffer , len , f -> r -> server -> limit_req_fieldsize ) ; } if ( rv != APR_SUCCESS ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , rv , f -> r , APLOGNO ( 01590 ) \"Error<S2SV_blank>reading<S2SV_blank>chunk<S2SV_blank>%s<S2SV_blank>\" , ( APR_ENOSPC == rv ) ? \"(overflow)\" : \"\" ) ; return rv ; } } apr_bucket_delete ( e ) ; e = APR_BRIGADE_FIRST ( b ) ; } again = 1 ; if ( ctx -> state == BODY_CHUNK_TRAILER ) { <S2SV_StartBug> int merge_trailers = <S2SV_EndBug> conf -> merge_trailers == AP_MERGE_TRAILERS_ENABLE ; return read_chunked_trailers ( ctx , f , b , merge_trailers ) ; } break ; } case BODY_NONE : case BODY_LENGTH : case BODY_CHUNK_DATA : { if ( ctx -> state != BODY_NONE && ctx -> remaining < readbytes ) { readbytes = ctx -> remaining ; } if ( readbytes > 0 ) { rv = ap_get_brigade ( f -> next , b , mode , block , readbytes ) ; if ( block == APR_NONBLOCK_READ && ( ( rv == APR_SUCCESS && APR_BRIGADE_EMPTY ( b ) ) || ( APR_STATUS_IS_EAGAIN ( rv ) ) ) ) { return APR_EAGAIN ; } if ( rv == APR_EOF && ctx -> state != BODY_NONE && ctx -> remaining > 0 ) { return APR_INCOMPLETE ; } if ( rv != APR_SUCCESS ) { return rv ; } apr_brigade_length ( b , 0 , & totalread ) ; AP_DEBUG_ASSERT ( totalread >= 0 ) ; if ( ctx -> state != BODY_NONE ) { ctx -> remaining -= totalread ; if ( ctx -> remaining > 0 ) { e = APR_BRIGADE_LAST ( b ) ; if ( APR_BUCKET_IS_EOS ( e ) ) { apr_bucket_delete ( e ) ; return APR_INCOMPLETE ; } } else if ( ctx -> state == BODY_CHUNK_DATA ) { ctx -> state = BODY_CHUNK_END ; ctx -> chunk_used = 0 ; } } } if ( ctx -> state == BODY_LENGTH && ctx -> remaining == 0 ) { e = apr_bucket_eos_create ( f -> c -> bucket_alloc ) ; APR_BRIGADE_INSERT_TAIL ( b , e ) ; ctx -> eos_sent = 1 ; } if ( ctx -> limit ) { ctx -> limit_used += totalread ; if ( ctx -> limit < ctx -> limit_used ) { ap_log_rerror ( APLOG_MARK , APLOG_INFO , 0 , f -> r , APLOGNO ( 01591 ) \"Read<S2SV_blank>content-length<S2SV_blank>of<S2SV_blank>%\" APR_OFF_T_FMT \"<S2SV_blank>is<S2SV_blank>larger<S2SV_blank>than<S2SV_blank>the<S2SV_blank>configured<S2SV_blank>limit\" \"<S2SV_blank>of<S2SV_blank>%\" APR_OFF_T_FMT , ctx -> limit_used , ctx -> limit ) ; return APR_ENOSPC ; } } break ; } case BODY_CHUNK_TRAILER : { rv = ap_get_brigade ( f -> next , b , mode , block , readbytes ) ; if ( block == APR_NONBLOCK_READ && ( ( rv == APR_SUCCESS && APR_BRIGADE_EMPTY ( b ) ) || ( APR_STATUS_IS_EAGAIN ( rv ) ) ) ) { return APR_EAGAIN ; } if ( rv != APR_SUCCESS ) { return rv ; } break ; } default : { <S2SV_StartBug> break ; <S2SV_EndBug> } } } while ( again ) ; return APR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 02555 ) \"Unknown<S2SV_blank>Transfer-Encoding:<S2SV_blank>%s;<S2SV_blank>\" \"using<S2SV_blank>read-until-close\" <S2SV_ModEnd> , tenc ) <S2SV_ModStart> ) ; return APR_EINVAL <S2SV_ModEnd> ; } if <S2SV_ModStart> bb ) ; apr_brigade_cleanup ( bb ) ; <S2SV_ModStart> BODY_CHUNK_EXT : case BODY_CHUNK_LF : case BODY_CHUNK_END : case BODY_CHUNK_END_LF <S2SV_ModEnd> : { rv <S2SV_ModStart> BODY_CHUNK_TRAILER ) { return read_chunked_trailers ( ctx , f , b , conf -> merge_trailers == AP_MERGE_TRAILERS_ENABLE <S2SV_ModEnd> ) ; } <S2SV_ModStart> default : { ap_log_rerror ( APLOG_MARK , APLOG_ERR , 0 , f -> r , APLOGNO ( 02901 ) \"Unexpected<S2SV_blank>body<S2SV_blank>state<S2SV_blank>(%i)\" , ( int ) ctx -> state ) ; return APR_EGENERAL <S2SV_ModEnd> ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9421\n\n```\nCWE-000 bool_t xdr_krb5_tl_data ( XDR * xdrs , krb5_tl_data * * tl_data_head ) { krb5_tl_data * tl , * tl2 ; bool_t more ; unsigned int len ; switch ( xdrs -> x_op ) { case XDR_FREE : tl = tl2 = * tl_data_head ; while ( tl ) { tl2 = tl -> tl_data_next ; free ( tl -> tl_data_contents ) ; free ( tl ) ; tl = tl2 ; } <S2SV_StartBug> break ; <S2SV_EndBug> case XDR_ENCODE : tl = * tl_data_head ; while ( 1 ) { more = ( tl != NULL ) ; if ( ! xdr_bool ( xdrs , & more ) ) return FALSE ; if ( tl == NULL ) break ; if ( ! xdr_krb5_int16 ( xdrs , & tl -> tl_data_type ) ) return FALSE ; len = tl -> tl_data_length ; if ( ! xdr_bytes ( xdrs , ( char * * ) & tl -> tl_data_contents , & len , ~ 0 ) ) return FALSE ; tl = tl -> tl_data_next ; } break ; case XDR_DECODE : tl = NULL ; while ( 1 ) { if ( ! xdr_bool ( xdrs , & more ) ) return FALSE ; if ( more == FALSE ) break ; tl2 = ( krb5_tl_data * ) malloc ( sizeof ( krb5_tl_data ) ) ; if ( tl2 == NULL ) return FALSE ; memset ( tl2 , 0 , sizeof ( krb5_tl_data ) ) ; if ( ! xdr_krb5_int16 ( xdrs , & tl2 -> tl_data_type ) ) return FALSE ; if ( ! xdr_bytes ( xdrs , ( char * * ) & tl2 -> tl_data_contents , & len , ~ 0 ) ) return FALSE ; tl2 -> tl_data_length = len ; tl2 -> tl_data_next = tl ; tl = tl2 ; } * tl_data_head = tl ; break ; } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tl2 ; } * tl_data_head = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9583\n\n```\nCWE-125 static int jpc_pi_nextrlcp ( register jpc_pi_t * pi ) { jpc_pchg_t * pchg ; int * prclyrno ; pchg = pi -> pchg ; if ( ! pi -> prgvolfirst ) { assert ( pi -> prcno < pi -> pirlvl -> numprcs ) ; prclyrno = & pi -> pirlvl -> prclyrnos [ pi -> prcno ] ; goto skip ; } else { pi -> prgvolfirst = 0 ; } for ( pi -> rlvlno = pchg -> rlvlnostart ; pi -> rlvlno < pi -> maxrlvls && pi -> rlvlno < pchg -> rlvlnoend ; ++ pi -> rlvlno ) { for ( pi -> lyrno = 0 ; pi -> lyrno < pi -> numlyrs && pi -> lyrno < JAS_CAST ( int , pchg -> lyrnoend ) ; ++ pi -> lyrno ) { for ( pi -> compno = pchg -> compnostart , pi -> picomp = & pi -> picomps [ pi -> compno ] ; pi -> compno < pi -> numcomps && pi -> compno < JAS_CAST ( int , pchg -> compnoend ) ; ++ pi -> compno , ++ pi -> picomp ) { if ( pi -> rlvlno >= pi -> picomp -> numrlvls ) { continue ; } pi -> pirlvl = & pi -> picomp -> pirlvls [ pi -> rlvlno ] ; for ( pi -> prcno = 0 , prclyrno = pi -> pirlvl -> prclyrnos ; pi -> prcno < pi -> pirlvl -> numprcs ; ++ pi -> prcno , ++ prclyrno ) { if ( pi -> lyrno >= * prclyrno ) { * prclyrno = pi -> lyrno ; ++ ( * prclyrno ) ; return 0 ; } skip : ; } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1180\n\n```\nCWE-787 static void iriap_getvaluebyclass_indication ( struct iriap_cb * self , struct sk_buff * skb ) { struct ias_object * obj ; struct ias_attrib * attrib ; int name_len ; int attr_len ; char name [ IAS_MAX_CLASSNAME + 1 ] ; char attr [ IAS_MAX_ATTRIBNAME + 1 ] ; __u8 * fp ; int n ; IRDA_DEBUG ( 4 , \"%s()\\\\n\" , __func__ ) ; IRDA_ASSERT ( self != NULL , return ; ) ; IRDA_ASSERT ( self -> magic == IAS_MAGIC , return ; ) ; IRDA_ASSERT ( skb != NULL , return ; ) ; fp = skb -> data ; n = 1 ; name_len = fp [ n ++ ] ; <S2SV_StartBug> memcpy ( name , fp + n , name_len ) ; n += name_len ; <S2SV_EndBug> name [ name_len ] = '\\\\0' ; <S2SV_StartBug> attr_len = fp [ n ++ ] ; <S2SV_EndBug> memcpy ( attr , fp + n , attr_len ) ; n += attr_len ; attr [ attr_len ] = '\\\\0' ; IRDA_DEBUG ( 4 , \"LM-IAS:<S2SV_blank>Looking<S2SV_blank>up<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , name , attr ) ; obj = irias_find_object ( name ) ; if ( obj == NULL ) { IRDA_DEBUG ( 2 , \"LM-IAS:<S2SV_blank>Object<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>found\\\\n\" , name ) ; iriap_getvaluebyclass_response ( self , 0x1235 , IAS_CLASS_UNKNOWN , & irias_missing ) ; return ; } IRDA_DEBUG ( 4 , \"LM-IAS:<S2SV_blank>found<S2SV_blank>%s,<S2SV_blank>id=%d\\\\n\" , obj -> name , obj -> id ) ; attrib = irias_find_attrib ( obj , attr ) ; if ( attrib == NULL ) { IRDA_DEBUG ( 2 , \"LM-IAS:<S2SV_blank>Attribute<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>found\\\\n\" , attr ) ; iriap_getvaluebyclass_response ( self , obj -> id , IAS_ATTRIB_UNKNOWN , & irias_missing ) ; return ; } iriap_getvaluebyclass_response ( self , obj -> id , IAS_SUCCESS , attrib -> value ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ] ; IRDA_ASSERT ( name_len < IAS_MAX_CLASSNAME + 1 , return ; ) ; <S2SV_ModStart> n ++ ] ; IRDA_ASSERT ( attr_len < IAS_MAX_ATTRIBNAME + 1 , return ; )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11368\n\n```\nCWE-617 static void finish_process_as_req ( struct as_req_state * state , krb5_error_code errcode ) { krb5_key_data * server_key ; krb5_keyblock * as_encrypting_key = NULL ; krb5_data * response = NULL ; const char * emsg = 0 ; int did_log = 0 ; loop_respond_fn oldrespond ; void * oldarg ; kdc_realm_t * kdc_active_realm = state -> active_realm ; krb5_audit_state * au_state = state -> au_state ; assert ( state ) ; oldrespond = state -> respond ; oldarg = state -> arg ; if ( errcode ) goto egress ; au_state -> stage = ENCR_REP ; if ( ( errcode = validate_forwardable ( state -> request , * state -> client , * state -> server , state -> kdc_time , & state -> status ) ) ) { errcode += ERROR_TABLE_BASE_krb5 ; goto egress ; } errcode = check_indicators ( kdc_context , state -> server , state -> auth_indicators ) ; if ( errcode ) { state -> status = \"HIGHER_AUTHENTICATION_REQUIRED\" ; goto egress ; } state -> ticket_reply . enc_part2 = & state -> enc_tkt_reply ; if ( ( errcode = krb5_dbe_find_enctype ( kdc_context , state -> server , - 1 , - 1 , 0 , & server_key ) ) ) { state -> status = \"FINDING_SERVER_KEY\" ; goto egress ; } if ( ( errcode = krb5_dbe_decrypt_key_data ( kdc_context , NULL , server_key , & state -> server_keyblock , NULL ) ) ) { state -> status = \"DECRYPT_SERVER_KEY\" ; goto egress ; } state -> reply . msg_type = KRB5_AS_REP ; state -> reply . client = state -> enc_tkt_reply . client ; state -> reply . ticket = & state -> ticket_reply ; state -> reply_encpart . session = & state -> session_key ; if ( ( errcode = fetch_last_req_info ( state -> client , & state -> reply_encpart . last_req ) ) ) { state -> status = \"FETCH_LAST_REQ\" ; goto egress ; } state -> reply_encpart . nonce = state -> request -> nonce ; state -> reply_encpart . key_exp = get_key_exp ( state -> client ) ; state -> reply_encpart . flags = state -> enc_tkt_reply . flags ; state -> reply_encpart . server = state -> ticket_reply . server ; state -> reply_encpart . times = state -> enc_tkt_reply . times ; state -> reply_encpart . times . authtime = state -> authtime = state -> kdc_time ; state -> reply_encpart . caddrs = state -> enc_tkt_reply . caddrs ; state -> reply_encpart . enc_padata = NULL ; errcode = return_padata ( kdc_context , & state -> rock , state -> req_pkt , state -> request , & state -> reply , & state -> client_keyblock , & state -> pa_context ) ; if ( errcode ) { state -> status = \"KDC_RETURN_PADATA\" ; goto egress ; } if ( state -> client_keyblock . enctype == ENCTYPE_NULL ) { state -> status = \"CANT_FIND_CLIENT_KEY\" ; errcode = KRB5KDC_ERR_ETYPE_NOSUPP ; goto egress ; } errcode = handle_authdata ( kdc_context , state -> c_flags , state -> client , state -> server , NULL , state -> local_tgt , & state -> client_keyblock , & state -> server_keyblock , NULL , state -> req_pkt , state -> request , NULL , NULL , state -> auth_indicators , & state -> enc_tkt_reply ) ; if ( errcode ) { krb5_klog_syslog ( LOG_INFO , _ ( \"AS_REQ<S2SV_blank>:<S2SV_blank>handle_authdata<S2SV_blank>(%d)\" ) , errcode ) ; state -> status = \"HANDLE_AUTHDATA\" ; goto egress ; } errcode = krb5_encrypt_tkt_part ( kdc_context , & state -> server_keyblock , & state -> ticket_reply ) ; if ( errcode ) { state -> status = \"ENCRYPT_TICKET\" ; goto egress ; } errcode = kau_make_tkt_id ( kdc_context , & state -> ticket_reply , & au_state -> tkt_out_id ) ; if ( errcode ) { state -> status = \"GENERATE_TICKET_ID\" ; goto egress ; } state -> ticket_reply . enc_part . kvno = server_key -> key_data_kvno ; errcode = kdc_fast_response_handle_padata ( state -> rstate , state -> request , & state -> reply , state -> client_keyblock . enctype ) ; if ( errcode ) { state -> status = \"MAKE_FAST_RESPONSE\" ; goto egress ; } state -> reply . enc_part . enctype = state -> client_keyblock . enctype ; errcode = kdc_fast_handle_reply_key ( state -> rstate , & state -> client_keyblock , & as_encrypting_key ) ; if ( errcode ) { state -> status = \"MAKE_FAST_REPLY_KEY\" ; goto egress ; } errcode = return_enc_padata ( kdc_context , state -> req_pkt , state -> request , as_encrypting_key , state -> server , & state -> reply_encpart , FALSE ) ; if ( errcode ) { state -> status = \"KDC_RETURN_ENC_PADATA\" ; goto egress ; } if ( kdc_fast_hide_client ( state -> rstate ) ) state -> reply . client = ( krb5_principal ) krb5_anonymous_principal ( ) ; errcode = krb5_encode_kdc_rep ( kdc_context , KRB5_AS_REP , & state -> reply_encpart , 0 , as_encrypting_key , & state -> reply , & response ) ; if ( state -> client_key != NULL ) state -> reply . enc_part . kvno = state -> client_key -> key_data_kvno ; if ( errcode ) { state -> status = \"ENCODE_KDC_REP\" ; goto egress ; } memset ( state -> reply . enc_part . ciphertext . data , 0 , state -> reply . enc_part . ciphertext . length ) ; free ( state -> reply . enc_part . ciphertext . data ) ; log_as_req ( kdc_context , state -> local_addr , state -> remote_addr , state -> request , & state -> reply , state -> client , state -> cname , state -> server , state -> sname , state -> authtime , 0 , 0 , 0 ) ; did_log = 1 ; egress : <S2SV_StartBug> if ( errcode != 0 ) <S2SV_EndBug> assert ( state -> status != 0 ) ; au_state -> status = state -> status ; au_state -> reply = & state -> reply ; kau_as_req ( kdc_context , ( errcode || state -> preauth_err ) ? FALSE : TRUE , au_state ) ; kau_free_kdc_req ( au_state ) ; free_padata_context ( kdc_context , state -> pa_context ) ; if ( as_encrypting_key ) krb5_free_keyblock ( kdc_context , as_encrypting_key ) ; if ( errcode ) emsg = krb5_get_error_message ( kdc_context , errcode ) ; if ( state -> status ) { log_as_req ( kdc_context , state -> local_addr , state -> remote_addr , state -> request , & state -> reply , state -> client , state -> cname , state -> server , state -> sname , state -> authtime , state -> status , errcode , emsg ) ; did_log = 1 ; } if ( errcode ) { if ( state -> status == 0 ) { state -> status = emsg ; } if ( errcode != KRB5KDC_ERR_DISCARD ) { errcode -= ERROR_TABLE_BASE_krb5 ; if ( errcode < 0 || errcode > KRB_ERR_MAX ) errcode = KRB_ERR_GENERIC ; errcode = prepare_error_as ( state -> rstate , state -> request , state -> local_tgt , errcode , state -> e_data , state -> typed_e_data , ( ( state -> client != NULL ) ? state -> client -> princ : NULL ) , & response , state -> status ) ; state -> status = 0 ; } } if ( emsg ) krb5_free_error_message ( kdc_context , emsg ) ; if ( state -> enc_tkt_reply . authorization_data != NULL ) krb5_free_authdata ( kdc_context , state -> enc_tkt_reply . authorization_data ) ; if ( state -> server_keyblock . contents != NULL ) krb5_free_keyblock_contents ( kdc_context , & state -> server_keyblock ) ; if ( state -> client_keyblock . contents != NULL ) krb5_free_keyblock_contents ( kdc_context , & state -> client_keyblock ) ; if ( state -> reply . padata != NULL ) krb5_free_pa_data ( kdc_context , state -> reply . padata ) ; if ( state -> reply_encpart . enc_padata ) krb5_free_pa_data ( kdc_context , state -> reply_encpart . enc_padata ) ; if ( state -> cname != NULL ) free ( state -> cname ) ; if ( state -> sname != NULL ) free ( state -> sname ) ; krb5_db_free_principal ( kdc_context , state -> client ) ; krb5_db_free_principal ( kdc_context , state -> server ) ; krb5_db_free_principal ( kdc_context , state -> local_tgt_storage ) ; if ( state -> session_key . contents != NULL ) krb5_free_keyblock_contents ( kdc_context , & state -> session_key ) ; if ( state -> ticket_reply . enc_part . ciphertext . data != NULL ) { memset ( state -> ticket_reply . enc_part . ciphertext . data , 0 , state -> ticket_reply . enc_part . ciphertext . length ) ; free ( state -> ticket_reply . enc_part . ciphertext . data ) ; } krb5_free_pa_data ( kdc_context , state -> e_data ) ; krb5_free_data ( kdc_context , state -> inner_body ) ; kdc_free_rstate ( state -> rstate ) ; krb5_free_kdc_req ( kdc_context , state -> request ) ; k5_free_data_ptr_list ( state -> auth_indicators ) ; assert ( did_log != 0 ) ; free ( state ) ; ( * oldrespond ) ( oldarg , errcode , response ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> errcode != 0 && state -> status == NULL ) state -> status = \"UNKNOWN_REASON\" <S2SV_ModEnd> ; au_state ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1860\n\n```\nCWE-119 static void wdm_in_callback ( struct urb * urb ) { struct wdm_device * desc = urb -> context ; int status = urb -> status ; <S2SV_StartBug> spin_lock ( & desc -> iuspin ) ; <S2SV_EndBug> clear_bit ( WDM_RESPONDING , & desc -> flags ) ; if ( status ) { switch ( status ) { case - ENOENT : dev_dbg ( & desc -> intf -> dev , \"nonzero<S2SV_blank>urb<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>-ENOENT\" ) ; goto skip_error ; case - ECONNRESET : dev_dbg ( & desc -> intf -> dev , \"nonzero<S2SV_blank>urb<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>-ECONNRESET\" ) ; goto skip_error ; case - ESHUTDOWN : dev_dbg ( & desc -> intf -> dev , \"nonzero<S2SV_blank>urb<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>-ESHUTDOWN\" ) ; goto skip_error ; case - EPIPE : dev_err ( & desc -> intf -> dev , \"nonzero<S2SV_blank>urb<S2SV_blank>status<S2SV_blank>received:<S2SV_blank>-EPIPE\\\\n\" ) ; break ; default : dev_err ( & desc -> intf -> dev , \"Unexpected<S2SV_blank>error<S2SV_blank>%d\\\\n\" , status ) ; break ; } } desc -> rerr = status ; <S2SV_StartBug> desc -> reslength = urb -> actual_length ; <S2SV_EndBug> <S2SV_StartBug> memmove ( desc -> ubuf + desc -> length , desc -> inbuf , desc -> reslength ) ; <S2SV_EndBug> desc -> length += desc -> reslength ; skip_error : wake_up ( & desc -> wait ) ; set_bit ( WDM_READ , & desc -> flags ) ; spin_unlock ( & desc -> iuspin ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> status ; int length = urb -> actual_length ; <S2SV_ModStart> = status ; if ( length + desc -> length > desc -> wMaxCommand ) { set_bit ( WDM_OVERFLOW , & desc -> flags ) ; } else { if ( ! test_bit ( WDM_OVERFLOW , & desc -> flags ) ) { <S2SV_ModEnd> memmove ( desc <S2SV_ModStart> -> inbuf , length ) ; desc -> length += length ; <S2SV_ModStart> desc -> reslength = length ; } } <S2SV_ModEnd> skip_error : wake_up\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15377\n\n```\nCWE-000 int DetectEngineContentInspection ( DetectEngineCtx * de_ctx , DetectEngineThreadCtx * det_ctx , const Signature * s , const SigMatchData * smd , Flow * f , uint8_t * buffer , uint32_t buffer_len , uint32_t stream_start_offset , uint8_t inspection_mode , void * data ) { SCEnter ( ) ; KEYWORD_PROFILING_START ; det_ctx -> inspection_recursion_counter ++ ; if ( det_ctx -> inspection_recursion_counter == de_ctx -> inspection_recursion_limit ) { det_ctx -> discontinue_matching = 1 ; KEYWORD_PROFILING_END ( det_ctx , smd -> type , 0 ) ; SCReturnInt ( 0 ) ; } if ( smd == NULL || buffer_len == 0 ) { KEYWORD_PROFILING_END ( det_ctx , smd -> type , 0 ) ; SCReturnInt ( 0 ) ; } if ( smd -> type == DETECT_CONTENT ) { DetectContentData * cd = ( DetectContentData * ) smd -> ctx ; SCLogDebug ( \"inspecting<S2SV_blank>content<S2SV_blank>%\" PRIu32 \"<S2SV_blank>buffer_len<S2SV_blank>%\" PRIu32 , cd -> id , buffer_len ) ; # ifdef DEBUG BUG_ON ( cd -> depth != 0 && cd -> depth <= cd -> offset ) ; # endif uint8_t * found = NULL ; uint32_t offset = 0 ; uint32_t depth = buffer_len ; uint32_t prev_offset = 0 ; uint32_t prev_buffer_offset = det_ctx -> buffer_offset ; do { if ( ( cd -> flags & DETECT_CONTENT_DISTANCE ) || ( cd -> flags & DETECT_CONTENT_WITHIN ) ) { SCLogDebug ( \"det_ctx->buffer_offset<S2SV_blank>%\" PRIu32 , det_ctx -> buffer_offset ) ; offset = prev_buffer_offset ; depth = buffer_len ; int distance = cd -> distance ; if ( cd -> flags & DETECT_CONTENT_DISTANCE ) { if ( cd -> flags & DETECT_CONTENT_DISTANCE_BE ) { distance = det_ctx -> bj_values [ cd -> distance ] ; } if ( distance < 0 && ( uint32_t ) ( abs ( distance ) ) > offset ) offset = 0 ; else offset += distance ; SCLogDebug ( \"cd->distance<S2SV_blank>%\" PRIi32 \",<S2SV_blank>offset<S2SV_blank>%\" PRIu32 \",<S2SV_blank>depth<S2SV_blank>%\" PRIu32 , distance , offset , depth ) ; } if ( cd -> flags & DETECT_CONTENT_WITHIN ) { if ( cd -> flags & DETECT_CONTENT_WITHIN_BE ) { if ( ( int32_t ) depth > ( int32_t ) ( prev_buffer_offset + det_ctx -> bj_values [ cd -> within ] + distance ) ) { depth = prev_buffer_offset + det_ctx -> bj_values [ cd -> within ] + distance ; } } else { if ( ( int32_t ) depth > ( int32_t ) ( prev_buffer_offset + cd -> within + distance ) ) { depth = prev_buffer_offset + cd -> within + distance ; } SCLogDebug ( \"cd->within<S2SV_blank>%\" PRIi32 \",<S2SV_blank>det_ctx->buffer_offset<S2SV_blank>%\" PRIu32 \",<S2SV_blank>depth<S2SV_blank>%\" PRIu32 , cd -> within , prev_buffer_offset , depth ) ; } if ( stream_start_offset != 0 && prev_buffer_offset == 0 ) { if ( depth <= stream_start_offset ) { goto no_match ; } else if ( depth >= ( stream_start_offset + buffer_len ) ) { ; } else { depth = depth - stream_start_offset ; } } } if ( cd -> flags & DETECT_CONTENT_DEPTH_BE ) { if ( ( det_ctx -> bj_values [ cd -> depth ] + prev_buffer_offset ) < depth ) { depth = prev_buffer_offset + det_ctx -> bj_values [ cd -> depth ] ; } } else { if ( cd -> depth != 0 ) { if ( ( cd -> depth + prev_buffer_offset ) < depth ) { depth = prev_buffer_offset + cd -> depth ; } SCLogDebug ( \"cd->depth<S2SV_blank>%\" PRIu32 \",<S2SV_blank>depth<S2SV_blank>%\" PRIu32 , cd -> depth , depth ) ; } } if ( cd -> flags & DETECT_CONTENT_OFFSET_BE ) { if ( det_ctx -> bj_values [ cd -> offset ] > offset ) offset = det_ctx -> bj_values [ cd -> offset ] ; } else { if ( cd -> offset > offset ) { offset = cd -> offset ; SCLogDebug ( \"setting<S2SV_blank>offset<S2SV_blank>%\" PRIu32 , offset ) ; } } } else { if ( cd -> flags & DETECT_CONTENT_DEPTH_BE ) { depth = det_ctx -> bj_values [ cd -> depth ] ; } else { if ( cd -> depth != 0 ) { depth = cd -> depth ; } } if ( stream_start_offset != 0 && cd -> flags & DETECT_CONTENT_DEPTH ) { if ( depth <= stream_start_offset ) { goto no_match ; } else if ( depth >= ( stream_start_offset + buffer_len ) ) { ; } else { depth = depth - stream_start_offset ; } } if ( cd -> flags & DETECT_CONTENT_OFFSET_BE ) offset = det_ctx -> bj_values [ cd -> offset ] ; else offset = cd -> offset ; prev_buffer_offset = 0 ; } SCLogDebug ( \"offset<S2SV_blank>%\" PRIu32 \",<S2SV_blank>prev_offset<S2SV_blank>%\" PRIu32 , offset , prev_offset ) ; if ( prev_offset != 0 ) offset = prev_offset ; SCLogDebug ( \"offset<S2SV_blank>%\" PRIu32 \",<S2SV_blank>depth<S2SV_blank>%\" PRIu32 , offset , depth ) ; if ( depth > buffer_len ) depth = buffer_len ; if ( offset > depth || depth == 0 ) { if ( cd -> flags & DETECT_CONTENT_NEGATED ) { goto match ; } else { goto no_match ; } } uint8_t * sbuffer = buffer + offset ; uint32_t sbuffer_len = depth - offset ; uint32_t match_offset = 0 ; SCLogDebug ( \"sbuffer_len<S2SV_blank>%\" PRIu32 , sbuffer_len ) ; # ifdef DEBUG BUG_ON ( sbuffer_len > buffer_len ) ; # endif found = SpmScan ( cd -> spm_ctx , det_ctx -> spm_thread_ctx , sbuffer , sbuffer_len ) ; SCLogDebug ( \"found<S2SV_blank>%p<S2SV_blank>cd<S2SV_blank>negated<S2SV_blank>%s\" , found , cd -> flags & DETECT_CONTENT_NEGATED ? \"true\" : \"false\" ) ; if ( found == NULL && ! ( cd -> flags & DETECT_CONTENT_NEGATED ) ) { <S2SV_StartBug> goto no_match ; <S2SV_EndBug> } else if ( found == NULL && ( cd -> flags & DETECT_CONTENT_NEGATED ) ) { goto match ; } else if ( found != NULL && ( cd -> flags & DETECT_CONTENT_NEGATED ) ) { SCLogDebug ( \"content<S2SV_blank>%\" PRIu32 \"<S2SV_blank>matched<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%\" PRIu32 \",<S2SV_blank>but<S2SV_blank>negated<S2SV_blank>so<S2SV_blank>no<S2SV_blank>match\" , cd -> id , match_offset ) ; if ( DETECT_CONTENT_IS_SINGLE ( cd ) ) det_ctx -> discontinue_matching = 1 ; goto no_match ; } else { match_offset = ( uint32_t ) ( ( found - buffer ) + cd -> content_len ) ; SCLogDebug ( \"content<S2SV_blank>%\" PRIu32 \"<S2SV_blank>matched<S2SV_blank>at<S2SV_blank>offset<S2SV_blank>%\" PRIu32 \"\" , cd -> id , match_offset ) ; det_ctx -> buffer_offset = match_offset ; if ( cd -> flags & DETECT_CONTENT_REPLACE ) { if ( inspection_mode == DETECT_ENGINE_CONTENT_INSPECTION_MODE_PAYLOAD ) { det_ctx -> replist = DetectReplaceAddToList ( det_ctx -> replist , found , cd ) ; } else { SCLogWarning ( SC_ERR_INVALID_VALUE , \"Can\\'t<S2SV_blank>modify<S2SV_blank>payload<S2SV_blank>without<S2SV_blank>packet\" ) ; } } <S2SV_StartBug> if ( ! ( cd -> flags & DETECT_CONTENT_RELATIVE_NEXT ) ) { <S2SV_EndBug> SCLogDebug ( \"no<S2SV_blank>relative<S2SV_blank>match<S2SV_blank>coming<S2SV_blank>up,<S2SV_blank>so<S2SV_blank>this<S2SV_blank>is<S2SV_blank>a<S2SV_blank>match\" ) ; goto match ; } if ( smd -> is_last ) { goto no_match ; } SCLogDebug ( \"content<S2SV_blank>%\" PRIu32 , cd -> id ) ; KEYWORD_PROFILING_END ( det_ctx , smd -> type , 1 ) ; int r = DetectEngineContentInspection ( de_ctx , det_ctx , s , smd + 1 , f , buffer , buffer_len , stream_start_offset , inspection_mode , data ) ; if ( r == 1 ) { SCReturnInt ( 1 ) ; } <S2SV_StartBug> if ( det_ctx -> discontinue_matching ) <S2SV_EndBug> goto no_match ; prev_offset = ( match_offset - ( cd -> content_len - 1 ) ) ; SCLogDebug ( \"trying<S2SV_blank>to<S2SV_blank>see<S2SV_blank>if<S2SV_blank>there<S2SV_blank>is<S2SV_blank>another<S2SV_blank>match<S2SV_blank>after<S2SV_blank>prev_offset<S2SV_blank>%\" PRIu32 , prev_offset ) ; } } while ( 1 ) ; } else if ( smd -> type == DETECT_ISDATAAT ) { SCLogDebug ( \"inspecting<S2SV_blank>isdataat\" ) ; DetectIsdataatData * id = ( DetectIsdataatData * ) smd -> ctx ; if ( id -> flags & ISDATAAT_RELATIVE ) { if ( det_ctx -> buffer_offset + id -> dataat > buffer_len ) { SCLogDebug ( \"det_ctx->buffer_offset<S2SV_blank>+<S2SV_blank>id->dataat<S2SV_blank>%\" PRIu32 \"<S2SV_blank>><S2SV_blank>%\" PRIu32 , det_ctx -> buffer_offset + id -> dataat , buffer_len ) ; if ( id -> flags & ISDATAAT_NEGATED ) goto match ; goto no_match ; } else { SCLogDebug ( \"relative<S2SV_blank>isdataat<S2SV_blank>match\" ) ; if ( id -> flags & ISDATAAT_NEGATED ) goto no_match ; goto match ; } } else { if ( id -> dataat < buffer_len ) { SCLogDebug ( \"absolute<S2SV_blank>isdataat<S2SV_blank>match\" ) ; if ( id -> flags & ISDATAAT_NEGATED ) goto no_match ; goto match ; } else { SCLogDebug ( \"absolute<S2SV_blank>isdataat<S2SV_blank>mismatch,<S2SV_blank>id->isdataat<S2SV_blank>%\" PRIu32 \",<S2SV_blank>buffer_len<S2SV_blank>%\" PRIu32 \"\" , id -> dataat , buffer_len ) ; if ( id -> flags & ISDATAAT_NEGATED ) goto match ; goto no_match ; } } } else if ( smd -> type == DETECT_PCRE ) { SCLogDebug ( \"inspecting<S2SV_blank>pcre\" ) ; DetectPcreData * pe = ( DetectPcreData * ) smd -> ctx ; uint32_t prev_buffer_offset = det_ctx -> buffer_offset ; uint32_t prev_offset = 0 ; int r = 0 ; det_ctx -> pcre_match_start_offset = 0 ; do { Packet * p = NULL ; if ( inspection_mode == DETECT_ENGINE_CONTENT_INSPECTION_MODE_PAYLOAD ) p = ( Packet * ) data ; r = DetectPcrePayloadMatch ( det_ctx , s , smd , p , f , buffer , buffer_len ) ; if ( r == 0 ) { goto no_match ; } if ( ! ( pe -> flags & DETECT_PCRE_RELATIVE_NEXT ) ) { SCLogDebug ( \"no<S2SV_blank>relative<S2SV_blank>match<S2SV_blank>coming<S2SV_blank>up,<S2SV_blank>so<S2SV_blank>this<S2SV_blank>is<S2SV_blank>a<S2SV_blank>match\" ) ; goto match ; } KEYWORD_PROFILING_END ( det_ctx , smd -> type , 1 ) ; prev_offset = det_ctx -> pcre_match_start_offset ; r = DetectEngineContentInspection ( de_ctx , det_ctx , s , smd + 1 , f , buffer , buffer_len , stream_start_offset , inspection_mode , data ) ; if ( r == 1 ) { SCReturnInt ( 1 ) ; } if ( det_ctx -> discontinue_matching ) goto no_match ; det_ctx -> buffer_offset = prev_buffer_offset ; det_ctx -> pcre_match_start_offset = prev_offset ; } while ( 1 ) ; } else if ( smd -> type == DETECT_BYTETEST ) { DetectBytetestData * btd = ( DetectBytetestData * ) smd -> ctx ; uint8_t flags = btd -> flags ; int32_t offset = btd -> offset ; uint64_t value = btd -> value ; if ( flags & DETECT_BYTETEST_OFFSET_BE ) { offset = det_ctx -> bj_values [ offset ] ; } if ( flags & DETECT_BYTETEST_VALUE_BE ) { value = det_ctx -> bj_values [ value ] ; } if ( flags & DETECT_BYTETEST_DCE && data != NULL ) { DCERPCState * dcerpc_state = ( DCERPCState * ) data ; flags |= ( ( dcerpc_state -> dcerpc . dcerpchdr . packed_drep [ 0 ] & 0x10 ) ? DETECT_BYTETEST_LITTLE : 0 ) ; } if ( DetectBytetestDoMatch ( det_ctx , s , smd -> ctx , buffer , buffer_len , flags , offset , value ) != 1 ) { goto no_match ; } goto match ; } else if ( smd -> type == DETECT_BYTEJUMP ) { DetectBytejumpData * bjd = ( DetectBytejumpData * ) smd -> ctx ; uint8_t flags = bjd -> flags ; int32_t offset = bjd -> offset ; if ( flags & DETECT_BYTEJUMP_OFFSET_BE ) { offset = det_ctx -> bj_values [ offset ] ; } if ( flags & DETECT_BYTEJUMP_DCE && data != NULL ) { DCERPCState * dcerpc_state = ( DCERPCState * ) data ; flags |= ( ( dcerpc_state -> dcerpc . dcerpchdr . packed_drep [ 0 ] & 0x10 ) ? DETECT_BYTEJUMP_LITTLE : 0 ) ; } if ( DetectBytejumpDoMatch ( det_ctx , s , smd -> ctx , buffer , buffer_len , flags , offset ) != 1 ) { goto no_match ; } goto match ; } else if ( smd -> type == DETECT_BYTE_EXTRACT ) { DetectByteExtractData * bed = ( DetectByteExtractData * ) smd -> ctx ; uint8_t endian = bed -> endian ; if ( ( bed -> flags & DETECT_BYTE_EXTRACT_FLAG_ENDIAN ) && endian == DETECT_BYTE_EXTRACT_ENDIAN_DCE && data != NULL ) { DCERPCState * dcerpc_state = ( DCERPCState * ) data ; endian |= ( ( dcerpc_state -> dcerpc . dcerpchdr . packed_drep [ 0 ] == 0x10 ) ? DETECT_BYTE_EXTRACT_ENDIAN_LITTLE : DETECT_BYTE_EXTRACT_ENDIAN_BIG ) ; } if ( DetectByteExtractDoMatch ( det_ctx , smd , s , buffer , buffer_len , & det_ctx -> bj_values [ bed -> local_id ] , endian ) != 1 ) { goto no_match ; } goto match ; } else if ( smd -> type == DETECT_AL_URILEN ) { SCLogDebug ( \"inspecting<S2SV_blank>uri<S2SV_blank>len\" ) ; int r = 0 ; DetectUrilenData * urilend = ( DetectUrilenData * ) smd -> ctx ; switch ( urilend -> mode ) { case DETECT_URILEN_EQ : if ( buffer_len == urilend -> urilen1 ) r = 1 ; break ; case DETECT_URILEN_LT : if ( buffer_len < urilend -> urilen1 ) r = 1 ; break ; case DETECT_URILEN_GT : if ( buffer_len > urilend -> urilen1 ) r = 1 ; break ; case DETECT_URILEN_RA : if ( buffer_len > urilend -> urilen1 && buffer_len < urilend -> urilen2 ) { r = 1 ; } break ; } if ( r == 1 ) { goto match ; } det_ctx -> discontinue_matching = 0 ; goto no_match ; # ifdef HAVE_LUA } else if ( smd -> type == DETECT_LUA ) { SCLogDebug ( \"lua<S2SV_blank>starting\" ) ; if ( DetectLuaMatchBuffer ( det_ctx , s , smd , buffer , buffer_len , det_ctx -> buffer_offset , f ) != 1 ) { SCLogDebug ( \"lua<S2SV_blank>no_match\" ) ; goto no_match ; } SCLogDebug ( \"lua<S2SV_blank>match\" ) ; goto match ; # endif } else if ( smd -> type == DETECT_BASE64_DECODE ) { if ( DetectBase64DecodeDoMatch ( det_ctx , s , smd , buffer , buffer_len ) ) { if ( s -> sm_arrays [ DETECT_SM_LIST_BASE64_DATA ] != NULL ) { KEYWORD_PROFILING_END ( det_ctx , smd -> type , 1 ) ; if ( DetectBase64DataDoMatch ( de_ctx , det_ctx , s , f ) ) { goto final_match ; } } } } else { SCLogDebug ( \"sm->type<S2SV_blank>%u\" , smd -> type ) ; # ifdef DEBUG BUG_ON ( 1 ) ; # endif } no_match : KEYWORD_PROFILING_END ( det_ctx , smd -> type , 0 ) ; SCReturnInt ( 0 ) ; match : if ( ! smd -> is_last ) { KEYWORD_PROFILING_END ( det_ctx , smd -> type , 1 ) ; int r = DetectEngineContentInspection ( de_ctx , det_ctx , s , smd + 1 , f , buffer , buffer_len , stream_start_offset , inspection_mode , data ) ; SCReturnInt ( r ) ; } final_match : KEYWORD_PROFILING_END ( det_ctx , smd -> type , 1 ) ; SCReturnInt ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { if ( ( cd -> flags & ( DETECT_CONTENT_DISTANCE | DETECT_CONTENT_WITHIN ) ) == 0 ) { det_ctx -> discontinue_matching = 1 ; } <S2SV_ModStart> } if ( smd -> is_last ) { goto match <S2SV_ModEnd> ; } SCLogDebug <S2SV_ModStart> ) ; } SCLogDebug ( \"no<S2SV_blank>match<S2SV_blank>for<S2SV_blank>\\'next<S2SV_blank>sm\\'\" ) ; <S2SV_ModStart> -> discontinue_matching ) { SCLogDebug ( \"\\'next<S2SV_blank>sm\\'<S2SV_blank>said<S2SV_blank>to<S2SV_blank>discontinue<S2SV_blank>this<S2SV_blank>right<S2SV_blank>now\" ) ; goto no_match ; } if ( ( cd -> flags & DETECT_CONTENT_RELATIVE_NEXT ) == 0 ) { SCLogDebug ( \"\\'next<S2SV_blank>sm\\'<S2SV_blank>does<S2SV_blank>not<S2SV_blank>depend<S2SV_blank>on<S2SV_blank>me,<S2SV_blank>so<S2SV_blank>we<S2SV_blank>can<S2SV_blank>give<S2SV_blank>up\" ) ; det_ctx -> discontinue_matching = 1 ; goto no_match ; } SCLogDebug ( \"\\'next<S2SV_blank>sm\\'<S2SV_blank>depends<S2SV_blank>on<S2SV_blank>me<S2SV_blank>%p,<S2SV_blank>lets<S2SV_blank>see<S2SV_blank>what<S2SV_blank>we<S2SV_blank>can<S2SV_blank>do<S2SV_blank>(flags<S2SV_blank>%u)\" , cd , cd -> flags ) <S2SV_ModEnd> ; prev_offset =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5375\n\n```\nCWE-310 int btrfs_add_link ( struct btrfs_trans_handle * trans , struct inode * parent_inode , struct inode * inode , const char * name , int name_len , int add_backref , u64 index ) { int ret = 0 ; struct btrfs_key key ; struct btrfs_root * root = BTRFS_I ( parent_inode ) -> root ; u64 ino = btrfs_ino ( inode ) ; u64 parent_ino = btrfs_ino ( parent_inode ) ; if ( unlikely ( ino == BTRFS_FIRST_FREE_OBJECTID ) ) { memcpy ( & key , & BTRFS_I ( inode ) -> root -> root_key , sizeof ( key ) ) ; } else { key . objectid = ino ; btrfs_set_key_type ( & key , BTRFS_INODE_ITEM_KEY ) ; key . offset = 0 ; } if ( unlikely ( ino == BTRFS_FIRST_FREE_OBJECTID ) ) { ret = btrfs_add_root_ref ( trans , root -> fs_info -> tree_root , key . objectid , root -> root_key . objectid , parent_ino , index , name , name_len ) ; } else if ( add_backref ) { ret = btrfs_insert_inode_ref ( trans , root , name , name_len , ino , parent_ino , index ) ; } if ( ret ) return ret ; ret = btrfs_insert_dir_item ( trans , root , name , name_len , parent_inode , & key , btrfs_inode_type ( inode ) , index ) ; <S2SV_StartBug> if ( ret == - EEXIST ) <S2SV_EndBug> goto fail_dir_item ; else if ( ret ) { btrfs_abort_transaction ( trans , root , ret ) ; return ret ; } btrfs_i_size_write ( parent_inode , parent_inode -> i_size + name_len * 2 ) ; inode_inc_iversion ( parent_inode ) ; parent_inode -> i_mtime = parent_inode -> i_ctime = CURRENT_TIME ; ret = btrfs_update_inode ( trans , root , parent_inode ) ; if ( ret ) btrfs_abort_transaction ( trans , root , ret ) ; return ret ; fail_dir_item : if ( unlikely ( ino == BTRFS_FIRST_FREE_OBJECTID ) ) { u64 local_index ; int err ; err = btrfs_del_root_ref ( trans , root -> fs_info -> tree_root , key . objectid , root -> root_key . objectid , parent_ino , & local_index , name , name_len ) ; } else if ( add_backref ) { u64 local_index ; int err ; err = btrfs_del_inode_ref ( trans , root , name , name_len , ino , parent_ino , & local_index ) ; } return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> == - EEXIST || ret == - EOVERFLOW\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void fadst8 ( const int16_t * input , int16_t * output ) { <S2SV_EndBug> <S2SV_StartBug> int s0 , s1 , s2 , s3 , s4 , s5 , s6 , s7 ; <S2SV_EndBug> int x0 = input [ 7 ] ; <S2SV_StartBug> int x1 = input [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> int x2 = input [ 5 ] ; <S2SV_EndBug> <S2SV_StartBug> int x3 = input [ 2 ] ; <S2SV_EndBug> <S2SV_StartBug> int x4 = input [ 3 ] ; <S2SV_EndBug> <S2SV_StartBug> int x5 = input [ 4 ] ; <S2SV_EndBug> <S2SV_StartBug> int x6 = input [ 1 ] ; <S2SV_EndBug> <S2SV_StartBug> int x7 = input [ 6 ] ; <S2SV_EndBug> s0 = cospi_2_64 * x0 + cospi_30_64 * x1 ; s1 = cospi_30_64 * x0 - cospi_2_64 * x1 ; s2 = cospi_10_64 * x2 + cospi_22_64 * x3 ; s3 = cospi_22_64 * x2 - cospi_10_64 * x3 ; s4 = cospi_18_64 * x4 + cospi_14_64 * x5 ; s5 = cospi_14_64 * x4 - cospi_18_64 * x5 ; s6 = cospi_26_64 * x6 + cospi_6_64 * x7 ; s7 = cospi_6_64 * x6 - cospi_26_64 * x7 ; x0 = fdct_round_shift ( s0 + s4 ) ; x1 = fdct_round_shift ( s1 + s5 ) ; x2 = fdct_round_shift ( s2 + s6 ) ; x3 = fdct_round_shift ( s3 + s7 ) ; x4 = fdct_round_shift ( s0 - s4 ) ; x5 = fdct_round_shift ( s1 - s5 ) ; x6 = fdct_round_shift ( s2 - s6 ) ; x7 = fdct_round_shift ( s3 - s7 ) ; s0 = x0 ; s1 = x1 ; s2 = x2 ; s3 = x3 ; s4 = cospi_8_64 * x4 + cospi_24_64 * x5 ; s5 = cospi_24_64 * x4 - cospi_8_64 * x5 ; s6 = - cospi_24_64 * x6 + cospi_8_64 * x7 ; s7 = cospi_8_64 * x6 + cospi_24_64 * x7 ; x0 = s0 + s2 ; x1 = s1 + s3 ; x2 = s0 - s2 ; x3 = s1 - s3 ; x4 = fdct_round_shift ( s4 + s6 ) ; x5 = fdct_round_shift ( s5 + s7 ) ; x6 = fdct_round_shift ( s4 - s6 ) ; x7 = fdct_round_shift ( s5 - s7 ) ; s2 = cospi_16_64 * ( x2 + x3 ) ; s3 = cospi_16_64 * ( x2 - x3 ) ; s6 = cospi_16_64 * ( x6 + x7 ) ; s7 = cospi_16_64 * ( x6 - x7 ) ; x2 = fdct_round_shift ( s2 ) ; x3 = fdct_round_shift ( s3 ) ; x6 = fdct_round_shift ( s6 ) ; x7 = fdct_round_shift ( s7 ) ; <S2SV_StartBug> output [ 0 ] = x0 ; <S2SV_EndBug> <S2SV_StartBug> output [ 1 ] = - x4 ; <S2SV_EndBug> <S2SV_StartBug> output [ 2 ] = x6 ; <S2SV_EndBug> <S2SV_StartBug> output [ 3 ] = - x2 ; <S2SV_EndBug> <S2SV_StartBug> output [ 4 ] = x3 ; <S2SV_EndBug> <S2SV_StartBug> output [ 5 ] = - x7 ; <S2SV_EndBug> <S2SV_StartBug> output [ 6 ] = x5 ; <S2SV_EndBug> <S2SV_StartBug> output [ 7 ] = - x1 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fadst8 ( const tran_low_t * input , tran_low_t <S2SV_ModEnd> * output ) <S2SV_ModStart> output ) { tran_high_t s0 , s1 , s2 , s3 , s4 , s5 , s6 , s7 ; tran_high_t <S2SV_ModEnd> x0 = input <S2SV_ModStart> 7 ] ; tran_high_t <S2SV_ModEnd> x1 = input <S2SV_ModStart> 0 ] ; tran_high_t <S2SV_ModEnd> x2 = input <S2SV_ModStart> 5 ] ; tran_high_t <S2SV_ModEnd> x3 = input <S2SV_ModStart> 2 ] ; tran_high_t <S2SV_ModEnd> x4 = input <S2SV_ModStart> 3 ] ; tran_high_t <S2SV_ModEnd> x5 = input <S2SV_ModStart> 4 ] ; tran_high_t <S2SV_ModEnd> x6 = input <S2SV_ModStart> 1 ] ; tran_high_t <S2SV_ModEnd> x7 = input <S2SV_ModStart> 0 ] = ( tran_low_t ) <S2SV_ModStart> 1 ] = ( tran_low_t ) <S2SV_ModStart> 2 ] = ( tran_low_t ) <S2SV_ModStart> 3 ] = ( tran_low_t ) <S2SV_ModStart> 4 ] = ( tran_low_t ) <S2SV_ModStart> 5 ] = ( tran_low_t ) <S2SV_ModStart> 6 ] = ( tran_low_t ) <S2SV_ModStart> 7 ] = ( tran_low_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> fpDiff ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint32 bps = tif -> tif_dir . td_bitspersample / 8 ; tmsize_t wc = cc / bps ; tmsize_t count ; uint8 * cp = ( uint8 * ) cp0 ; uint8 * tmp = ( uint8 * ) _TIFFmalloc ( cc ) ; <S2SV_StartBug> assert ( ( cc % ( bps * stride ) ) == 0 ) ; <S2SV_EndBug> if ( ! tmp ) <S2SV_StartBug> return ; <S2SV_EndBug> _TIFFmemcpy ( tmp , cp0 , cc ) ; for ( count = 0 ; count < wc ; count ++ ) { uint32 byte ; for ( byte = 0 ; byte < bps ; byte ++ ) { # if WORDS_BIGENDIAN cp [ byte * wc + count ] = tmp [ bps * count + byte ] ; # else cp [ ( bps - byte - 1 ) * wc + count ] = tmp [ bps * count + byte ] ; # endif } } _TIFFfree ( tmp ) ; cp = ( uint8 * ) cp0 ; cp += cc - stride - 1 ; for ( count = cc ; count > stride ; count -= stride ) REPEAT4 ( stride , cp [ stride ] = ( unsigned char ) ( ( cp [ stride ] - cp [ 0 ] ) & 0xff ) ; cp -- ) <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> fpDiff ( TIFF <S2SV_ModStart> cc ) ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"fpDiff\" , \"%s\" , \"(cc%(bps*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> tmp ) return 0 <S2SV_ModStart> cp -- ) return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3836\n\n```\nCWE-189 static EAS_RESULT Parse_wave ( SDLS_SYNTHESIZER_DATA * pDLSData , EAS_I32 pos , EAS_U16 waveIndex ) { EAS_RESULT result ; EAS_U32 temp ; EAS_I32 size ; EAS_I32 endChunk ; EAS_I32 chunkPos ; EAS_I32 wsmpPos = 0 ; EAS_I32 fmtPos = 0 ; EAS_I32 dataPos = 0 ; EAS_I32 dataSize = 0 ; S_WSMP_DATA * p ; void * pSample ; S_WSMP_DATA wsmp ; chunkPos = pos + 12 ; if ( ( result = EAS_HWFileSeek ( pDLSData -> hwInstData , pDLSData -> fileHandle , pos ) ) != EAS_SUCCESS ) return result ; if ( ( result = NextChunk ( pDLSData , & pos , & temp , & size ) ) != EAS_SUCCESS ) return result ; if ( temp != CHUNK_WAVE ) { { } return EAS_ERROR_FILE_FORMAT ; } pos = chunkPos ; endChunk = pos + size ; while ( pos < endChunk ) { chunkPos = pos ; if ( ( result = NextChunk ( pDLSData , & pos , & temp , & size ) ) != EAS_SUCCESS ) return result ; switch ( temp ) { case CHUNK_WSMP : wsmpPos = chunkPos + 8 ; break ; case CHUNK_FMT : fmtPos = chunkPos + 8 ; break ; case CHUNK_DATA : dataPos = chunkPos + 8 ; dataSize = size ; break ; default : break ; } } <S2SV_StartBug> if ( dataSize > MAX_DLS_WAVE_SIZE ) <S2SV_EndBug> { return EAS_ERROR_SOUND_LIBRARY ; } if ( pDLSData -> pDLS == NULL ) p = & wsmp ; else p = & pDLSData -> wsmpData [ waveIndex ] ; p -> fineTune = 0 ; p -> unityNote = 60 ; p -> gain = 0 ; p -> loopStart = 0 ; p -> loopLength = 0 ; if ( ! fmtPos ) { { } return EAS_ERROR_UNRECOGNIZED_FORMAT ; } if ( ! dataPos ) { { } return EAS_ERROR_UNRECOGNIZED_FORMAT ; } if ( wsmpPos ) { if ( ( result = Parse_wsmp ( pDLSData , wsmpPos , p ) ) != EAS_SUCCESS ) return result ; } if ( ( result = Parse_fmt ( pDLSData , fmtPos , p ) ) != EAS_SUCCESS ) return result ; if ( bitDepth == 8 ) { if ( p -> bitsPerSample == 8 ) size = dataSize ; else size = dataSize >> 1 ; if ( p -> loopLength ) size ++ ; } else { if ( p -> bitsPerSample == 16 ) size = dataSize ; else size = dataSize << 1 ; if ( p -> loopLength ) size += 2 ; } if ( pDLSData -> pDLS == NULL ) { pDLSData -> wavePoolSize += ( EAS_U32 ) size ; return EAS_SUCCESS ; } pSample = pDLSData -> pDLS -> pDLSSamples + pDLSData -> wavePoolOffset ; pDLSData -> pDLS -> pDLSSampleOffsets [ waveIndex ] = pDLSData -> wavePoolOffset ; pDLSData -> pDLS -> pDLSSampleLen [ waveIndex ] = ( EAS_U32 ) size ; pDLSData -> wavePoolOffset += ( EAS_U32 ) size ; if ( pDLSData -> wavePoolOffset > pDLSData -> wavePoolSize ) { { } return EAS_ERROR_SOUND_LIBRARY ; } if ( ( result = Parse_data ( pDLSData , dataPos , dataSize , p , pSample ) ) != EAS_SUCCESS ) return result ; return EAS_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( dataSize < 0 ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19905\n\n```\nCWE-120 int parse_sym_line ( buf , which_set ) char * buf ; int which_set ; { int val , i ; struct symparse * symp ; <S2SV_StartBug> char * bufp , * commentp , * altp ; <S2SV_EndBug> mungspaces ( buf ) ; if ( ( commentp = rindex ( buf , '#' ) ) != 0 && commentp [ - 1 ] == '<S2SV_blank>' ) commentp [ - 1 ] = '\\\\0' ; bufp = index ( buf , '=' ) ; altp = index ( buf , ':' ) ; if ( ! bufp || ( altp && altp < bufp ) ) bufp = altp ; if ( ! bufp ) { if ( strncmpi ( buf , \"finish\" , 6 ) == 0 ) { if ( chosen_symset_start ) chosen_symset_end = TRUE ; chosen_symset_start = FALSE ; return 1 ; } config_error_add ( \"No<S2SV_blank>\\\\\"finish\\\\\"\" ) ; return 0 ; } ++ bufp ; if ( * bufp == '<S2SV_blank>' ) ++ bufp ; symp = match_sym ( buf ) ; if ( ! symp ) { config_error_add ( \"Unknown<S2SV_blank>sym<S2SV_blank>keyword\" ) ; return 0 ; } if ( ! symset [ which_set ] . name ) { if ( symp -> range == SYM_CONTROL ) { struct symsetentry * tmpsp , * lastsp ; for ( lastsp = symset_list ; lastsp ; lastsp = lastsp -> next ) if ( ! lastsp -> next ) break ; switch ( symp -> idx ) { case 0 : tmpsp = ( struct symsetentry * ) alloc ( sizeof * tmpsp ) ; tmpsp -> next = ( struct symsetentry * ) 0 ; if ( ! lastsp ) symset_list = tmpsp ; else lastsp -> next = tmpsp ; tmpsp -> idx = symset_count ++ ; tmpsp -> name = dupstr ( bufp ) ; tmpsp -> desc = ( char * ) 0 ; tmpsp -> handling = H_UNK ; tmpsp -> nocolor = 0 ; tmpsp -> primary = 0 ; tmpsp -> rogue = 0 ; break ; case 2 : tmpsp = lastsp ; for ( i = 0 ; known_handling [ i ] ; ++ i ) if ( ! strcmpi ( known_handling [ i ] , bufp ) ) { tmpsp -> handling = i ; break ; } break ; case 3 : tmpsp = lastsp ; if ( tmpsp && ! tmpsp -> desc ) tmpsp -> desc = dupstr ( bufp ) ; break ; case 5 : tmpsp = lastsp ; for ( i = 0 ; known_restrictions [ i ] ; ++ i ) { if ( ! strcmpi ( known_restrictions [ i ] , bufp ) ) { switch ( i ) { case 0 : tmpsp -> primary = 1 ; break ; case 1 : tmpsp -> rogue = 1 ; break ; } break ; } } break ; } } return 1 ; } if ( symp -> range ) { if ( symp -> range == SYM_CONTROL ) { switch ( symp -> idx ) { case 0 : if ( ! strcmpi ( bufp , symset [ which_set ] . name ) ) { chosen_symset_start = TRUE ; if ( which_set == ROGUESET ) init_rogue_symbols ( ) ; else if ( which_set == PRIMARY ) init_primary_symbols ( ) ; } break ; case 1 : if ( chosen_symset_start ) chosen_symset_end = TRUE ; chosen_symset_start = FALSE ; break ; case 2 : if ( chosen_symset_start ) set_symhandling ( bufp , which_set ) ; break ; case 4 : if ( chosen_symset_start ) { if ( bufp ) { if ( ! strcmpi ( bufp , \"true\" ) || ! strcmpi ( bufp , \"yes\" ) || ! strcmpi ( bufp , \"on\" ) ) symset [ which_set ] . nocolor = 0 ; else if ( ! strcmpi ( bufp , \"false\" ) || ! strcmpi ( bufp , \"no\" ) || ! strcmpi ( bufp , \"off\" ) ) symset [ which_set ] . nocolor = 1 ; } } break ; case 5 : if ( chosen_symset_start ) { int n = 0 ; while ( known_restrictions [ n ] ) { if ( ! strcmpi ( known_restrictions [ n ] , bufp ) ) { switch ( n ) { case 0 : symset [ which_set ] . primary = 1 ; break ; case 1 : symset [ which_set ] . rogue = 1 ; break ; } break ; } n ++ ; } } break ; } } else { val = sym_val ( bufp ) ; if ( chosen_symset_start ) { if ( which_set == PRIMARY ) { update_primary_symset ( symp , val ) ; } else if ( which_set == ROGUESET ) { update_rogue_symset ( symp , val ) ; } } } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * altp ; if ( strlen ( buf ) >= BUFSZ ) buf [ BUFSZ - 1 ] = '\\\\0'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void command_timed_out ( UNUSED_ATTR void * context ) { pthread_mutex_lock ( & commands_pending_response_lock ) ; if ( list_is_empty ( commands_pending_response ) ) { LOG_ERROR ( \"%s<S2SV_blank>with<S2SV_blank>no<S2SV_blank>commands<S2SV_blank>pending<S2SV_blank>response\" , __func__ ) ; } else { waiting_command_t * wait_entry = list_front ( commands_pending_response ) ; pthread_mutex_unlock ( & commands_pending_response_lock ) ; LOG_ERROR ( \"%s<S2SV_blank>hci<S2SV_blank>layer<S2SV_blank>timeout<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>response<S2SV_blank>to<S2SV_blank>a<S2SV_blank>command.<S2SV_blank>opcode:<S2SV_blank>0x%x\" , __func__ , wait_entry -> opcode ) ; } LOG_ERROR ( \"%s<S2SV_blank>restarting<S2SV_blank>the<S2SV_blank>bluetooth<S2SV_blank>process.\" , __func__ ) ; <S2SV_StartBug> usleep ( 10000 ) ; <S2SV_EndBug> kill ( getpid ( ) , SIGKILL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> __func__ ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> usleep ( 10000 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_get_frame_corrupted ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctrl_id , va_list args ) { <S2SV_EndBug> int * corrupted = va_arg ( args , int * ) ; if ( corrupted ) { <S2SV_StartBug> if ( ctx -> pbi ) <S2SV_EndBug> <S2SV_StartBug> * corrupted = ctx -> pbi -> common . frame_to_show -> corrupted ; <S2SV_EndBug> else return VPX_CODEC_ERROR ; return VPX_CODEC_OK ; } else { <S2SV_StartBug> return VPX_CODEC_INVALID_PARAM ; <S2SV_EndBug> } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> ( ctx -> frame_workers ) { VPxWorker * const worker = ctx -> frame_workers ; FrameWorkerData * const frame_worker_data = ( FrameWorkerData * ) worker -> data1 ; RefCntBuffer * const frame_bufs = frame_worker_data -> pbi -> common . buffer_pool -> frame_bufs ; if ( frame_worker_data <S2SV_ModEnd> -> pbi -> <S2SV_ModStart> common . frame_to_show == NULL ) return VPX_CODEC_ERROR ; if ( ctx -> last_show_frame >= 0 ) * corrupted = frame_bufs [ ctx -> last_show_frame ] . buf . corrupted <S2SV_ModEnd> ; return VPX_CODEC_OK <S2SV_ModStart> else { return VPX_CODEC_ERROR <S2SV_ModEnd> ; } } <S2SV_ModStart> ; } } return VPX_CODEC_INVALID_PARAM ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6663\n\n```\nCWE-362 int mi_repair ( MI_CHECK * param , register MI_INFO * info , <S2SV_StartBug> char * name , int rep_quick ) <S2SV_EndBug> { int error , got_error ; ha_rows start_records , new_header_length ; my_off_t del ; File new_file ; MYISAM_SHARE * share = info -> s ; char llbuff [ 22 ] , llbuff2 [ 22 ] ; SORT_INFO sort_info ; MI_SORT_PARAM sort_param ; DBUG_ENTER ( \"mi_repair\" ) ; bzero ( ( char * ) & sort_info , sizeof ( sort_info ) ) ; bzero ( ( char * ) & sort_param , sizeof ( sort_param ) ) ; start_records = info -> state -> records ; new_header_length = ( param -> testflag & T_UNPACK ) ? 0L : share -> pack . header_length ; got_error = 1 ; new_file = - 1 ; sort_param . sort_info = & sort_info ; if ( ! ( param -> testflag & T_SILENT ) ) { printf ( \"-<S2SV_blank>recovering<S2SV_blank>(with<S2SV_blank>keycache)<S2SV_blank>MyISAM-table<S2SV_blank>\\'%s\\'\\\\n\" , name ) ; printf ( \"Data<S2SV_blank>records:<S2SV_blank>%s\\\\n\" , llstr ( info -> state -> records , llbuff ) ) ; } param -> testflag |= T_REP ; if ( info -> s -> options & ( HA_OPTION_CHECKSUM | HA_OPTION_COMPRESS_RECORD ) ) param -> testflag |= T_CALC_CHECKSUM ; DBUG_ASSERT ( param -> use_buffers < SIZE_T_MAX ) ; if ( ! param -> using_global_keycache ) ( void ) init_key_cache ( dflt_key_cache , param -> key_cache_block_size , param -> use_buffers , 0 , 0 ) ; if ( init_io_cache ( & param -> read_cache , info -> dfile , ( uint ) param -> read_buffer_length , READ_CACHE , share -> pack . header_length , 1 , MYF ( MY_WME ) ) ) { bzero ( & info -> rec_cache , sizeof ( info -> rec_cache ) ) ; goto err ; } if ( ! rep_quick ) if ( init_io_cache ( & info -> rec_cache , - 1 , ( uint ) param -> write_buffer_length , WRITE_CACHE , new_header_length , 1 , MYF ( MY_WME | MY_WAIT_IF_FULL ) ) ) goto err ; info -> opt_flag |= WRITE_CACHE_USED ; if ( ! mi_alloc_rec_buff ( info , - 1 , & sort_param . record ) || ! mi_alloc_rec_buff ( info , - 1 , & sort_param . rec_buff ) ) { mi_check_print_error ( param , \"Not<S2SV_blank>enough<S2SV_blank>memory<S2SV_blank>for<S2SV_blank>extra<S2SV_blank>record\" ) ; goto err ; } if ( ! rep_quick ) { if ( ( new_file = mysql_file_create ( mi_key_file_datatmp , fn_format ( param -> temp_filename , share -> data_file_name , \"\" , DATA_TMP_EXT , 2 + 4 ) , 0 , param -> tmpfile_createflag , MYF ( 0 ) ) ) < 0 ) { mi_check_print_error ( param , \"Can\\'t<S2SV_blank>create<S2SV_blank>new<S2SV_blank>tempfile:<S2SV_blank>\\'%s\\'\" , param -> temp_filename ) ; goto err ; } if ( new_header_length && filecopy ( param , new_file , info -> dfile , 0L , new_header_length , \"datafile-header\" ) ) goto err ; info -> s -> state . dellink = HA_OFFSET_ERROR ; info -> rec_cache . file = new_file ; if ( param -> testflag & T_UNPACK ) { share -> options &= ~ HA_OPTION_COMPRESS_RECORD ; mi_int2store ( share -> state . header . options , share -> options ) ; } } sort_info . info = info ; sort_info . param = param ; sort_param . read_cache = param -> read_cache ; sort_param . pos = sort_param . max_pos = share -> pack . header_length ; sort_param . filepos = new_header_length ; param -> read_cache . end_of_file = sort_info . filelength = mysql_file_seek ( info -> dfile , 0L , MY_SEEK_END , MYF ( 0 ) ) ; sort_info . dupp = 0 ; sort_param . fix_datafile = ( my_bool ) ( ! rep_quick ) ; sort_param . master = 1 ; sort_info . max_records = ~ ( ha_rows ) 0 ; set_data_file_type ( & sort_info , share ) ; del = info -> state -> del ; info -> state -> records = info -> state -> del = share -> state . split = 0 ; info -> state -> empty = 0 ; param -> glob_crc = 0 ; if ( param -> testflag & T_CALC_CHECKSUM ) sort_param . calc_checksum = 1 ; info -> update = ( short ) ( HA_STATE_CHANGED | HA_STATE_ROW_CHANGED ) ; if ( param -> testflag & T_CREATE_MISSING_KEYS ) mi_set_all_keys_active ( share -> state . key_map , share -> base . keys ) ; mi_drop_all_indexes ( param , info , TRUE ) ; lock_memory ( param ) ; while ( ! ( error = sort_get_next_record ( & sort_param ) ) ) { if ( writekeys ( & sort_param ) ) { if ( my_errno != HA_ERR_FOUND_DUPP_KEY ) goto err ; DBUG_DUMP ( \"record\" , ( uchar * ) sort_param . record , share -> base . pack_reclength ) ; mi_check_print_info ( param , \"Duplicate<S2SV_blank>key<S2SV_blank>%2d<S2SV_blank>for<S2SV_blank>record<S2SV_blank>at<S2SV_blank>%10s<S2SV_blank>against<S2SV_blank>new<S2SV_blank>record<S2SV_blank>at<S2SV_blank>%10s\" , info -> errkey + 1 , llstr ( sort_param . start_recpos , llbuff ) , llstr ( info -> dupp_key_pos , llbuff2 ) ) ; if ( param -> testflag & T_VERBOSE ) { ( void ) _mi_make_key ( info , ( uint ) info -> errkey , info -> lastkey , sort_param . record , 0L ) ; _mi_print_key ( stdout , share -> keyinfo [ info -> errkey ] . seg , info -> lastkey , USE_WHOLE_KEY ) ; } sort_info . dupp ++ ; if ( ( param -> testflag & ( T_FORCE_UNIQUENESS | T_QUICK ) ) == T_QUICK ) { param -> testflag |= T_RETRY_WITHOUT_QUICK ; param -> error_printed = 1 ; goto err ; } continue ; } if ( sort_write_record ( & sort_param ) ) goto err ; } if ( error > 0 || write_data_suffix ( & sort_info , ( my_bool ) ! rep_quick ) || flush_io_cache ( & info -> rec_cache ) || param -> read_cache . error < 0 ) goto err ; if ( param -> testflag & T_WRITE_LOOP ) { ( void ) fputs ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\\\\r\" , stdout ) ; ( void ) fflush ( stdout ) ; } if ( mysql_file_chsize ( share -> kfile , info -> state -> key_file_length , 0 , MYF ( 0 ) ) ) { mi_check_print_warning ( param , \"Can\\'t<S2SV_blank>change<S2SV_blank>size<S2SV_blank>of<S2SV_blank>indexfile,<S2SV_blank>error:<S2SV_blank>%d\" , my_errno ) ; goto err ; } if ( rep_quick && del + sort_info . dupp != info -> state -> del ) { mi_check_print_error ( param , \"Couldn\\'t<S2SV_blank>fix<S2SV_blank>table<S2SV_blank>with<S2SV_blank>quick<S2SV_blank>recovery:<S2SV_blank>Found<S2SV_blank>wrong<S2SV_blank>number<S2SV_blank>of<S2SV_blank>deleted<S2SV_blank>records\" ) ; mi_check_print_error ( param , \"Run<S2SV_blank>recovery<S2SV_blank>again<S2SV_blank>without<S2SV_blank>-q\" ) ; got_error = 1 ; param -> retry_repair = 1 ; param -> testflag |= T_RETRY_WITHOUT_QUICK ; goto err ; } if ( param -> testflag & T_SAFE_REPAIR ) { if ( info -> state -> records + 1 < start_records ) { info -> state -> records = start_records ; got_error = 1 ; goto err ; } } if ( ! rep_quick ) { mysql_file_close ( info -> dfile , MYF ( 0 ) ) ; info -> dfile = new_file ; info -> state -> data_file_length = sort_param . filepos ; share -> state . version = ( ulong ) time ( ( time_t * ) 0 ) ; } else { info -> state -> data_file_length = sort_param . max_pos ; } if ( param -> testflag & T_CALC_CHECKSUM ) info -> state -> checksum = param -> glob_crc ; if ( ! ( param -> testflag & T_SILENT ) ) { if ( start_records != info -> state -> records ) printf ( \"Data<S2SV_blank>records:<S2SV_blank>%s\\\\n\" , llstr ( info -> state -> records , llbuff ) ) ; if ( sort_info . dupp ) mi_check_print_warning ( param , \"%s<S2SV_blank>records<S2SV_blank>have<S2SV_blank>been<S2SV_blank>removed\" , llstr ( sort_info . dupp , llbuff ) ) ; } got_error = 0 ; if ( & share -> state . state != info -> state ) memcpy ( & share -> state . state , info -> state , sizeof ( * info -> state ) ) ; err : if ( ! got_error ) { if ( new_file >= 0 ) { <S2SV_StartBug> mysql_file_close ( new_file , MYF ( 0 ) ) ; <S2SV_EndBug> info -> dfile = new_file = - 1 ; if ( info -> s -> file_map ) { ( void ) my_munmap ( ( char * ) info -> s -> file_map , ( size_t ) info -> s -> mmaped_length ) ; info -> s -> file_map = NULL ; } if ( change_to_newfile ( share -> data_file_name , MI_NAME_DEXT , DATA_TMP_EXT , <S2SV_StartBug> ( param -> testflag & T_BACKUP_DATA ? <S2SV_EndBug> MYF ( MY_REDEL_MAKE_BACKUP ) : MYF ( 0 ) ) ) || mi_open_datafile ( info , share , name , - 1 ) ) got_error = 1 ; param -> retry_repair = 0 ; } } if ( got_error ) { if ( ! param -> error_printed ) mi_check_print_error ( param , \"%d<S2SV_blank>for<S2SV_blank>record<S2SV_blank>at<S2SV_blank>pos<S2SV_blank>%s\" , my_errno , llstr ( sort_param . start_recpos , llbuff ) ) ; if ( new_file >= 0 ) { ( void ) mysql_file_close ( new_file , MYF ( 0 ) ) ; ( void ) mysql_file_delete ( mi_key_file_datatmp , param -> temp_filename , MYF ( MY_WME ) ) ; info -> rec_cache . file = - 1 ; } mi_mark_crashed_on_repair ( info ) ; } my_free ( mi_get_rec_buff_ptr ( info , sort_param . rec_buff ) ) ; my_free ( mi_get_rec_buff_ptr ( info , sort_param . record ) ) ; my_free ( sort_info . buff ) ; ( void ) end_io_cache ( & param -> read_cache ) ; info -> opt_flag &= ~ ( READ_CACHE_USED | WRITE_CACHE_USED ) ; ( void ) end_io_cache ( & info -> rec_cache ) ; got_error |= flush_blocks ( param , share -> key_cache , share -> kfile ) ; if ( ! got_error && param -> testflag & T_UNPACK ) { share -> state . header . options [ 0 ] &= ( uchar ) ~ HA_OPTION_COMPRESS_RECORD ; share -> pack . header_length = 0 ; share -> data_file_type = sort_info . new_data_file_type ; } share -> state . changed |= ( STATE_NOT_OPTIMIZED_KEYS | STATE_NOT_SORTED_PAGES | STATE_NOT_ANALYZED ) ; DBUG_RETURN ( got_error ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int rep_quick , my_bool no_copy_stat <S2SV_ModStart> 0 ) { myf flags = 0 ; if ( param -> testflag & T_BACKUP_DATA ) flags |= MY_REDEL_MAKE_BACKUP ; if ( no_copy_stat ) flags |= MY_REDEL_NO_COPY_STAT ; <S2SV_ModStart> , DATA_TMP_EXT , flags <S2SV_ModEnd> ) || mi_open_datafile\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3152\n\n```\nCWE-284 static int dbConnect ( char * host , char * user , char * passwd ) { DBUG_ENTER ( \"dbConnect\" ) ; if ( verbose ) { fprintf ( stderr , \"#<S2SV_blank>Connecting<S2SV_blank>to<S2SV_blank>%s...\\\\n\" , host ? host : \"localhost\" ) ; } mysql_init ( & mysql_connection ) ; if ( opt_compress ) mysql_options ( & mysql_connection , MYSQL_OPT_COMPRESS , NullS ) ; <S2SV_StartBug> # ifdef HAVE_OPENSSL <S2SV_EndBug> if ( opt_use_ssl ) { mysql_ssl_set ( & mysql_connection , opt_ssl_key , opt_ssl_cert , opt_ssl_ca , opt_ssl_capath , opt_ssl_cipher ) ; mysql_options ( & mysql_connection , MYSQL_OPT_SSL_CRL , opt_ssl_crl ) ; mysql_options ( & mysql_connection , MYSQL_OPT_SSL_CRLPATH , opt_ssl_crlpath ) ; } # endif if ( opt_protocol ) mysql_options ( & mysql_connection , MYSQL_OPT_PROTOCOL , ( char * ) & opt_protocol ) ; if ( opt_bind_addr ) mysql_options ( & mysql_connection , MYSQL_OPT_BIND , opt_bind_addr ) ; # if defined ( _WIN32 ) && ! defined ( EMBEDDED_LIBRARY ) if ( shared_memory_base_name ) mysql_options ( & mysql_connection , MYSQL_SHARED_MEMORY_BASE_NAME , shared_memory_base_name ) ; # endif if ( opt_plugin_dir && * opt_plugin_dir ) mysql_options ( & mysql_connection , MYSQL_PLUGIN_DIR , opt_plugin_dir ) ; if ( opt_default_auth && * opt_default_auth ) mysql_options ( & mysql_connection , MYSQL_DEFAULT_AUTH , opt_default_auth ) ; mysql_options ( & mysql_connection , MYSQL_SET_CHARSET_NAME , default_charset ) ; mysql_options ( & mysql_connection , MYSQL_OPT_CONNECT_ATTR_RESET , 0 ) ; mysql_options4 ( & mysql_connection , MYSQL_OPT_CONNECT_ATTR_ADD , \"program_name\" , \"mysqlcheck\" ) ; if ( ! ( sock = mysql_real_connect ( & mysql_connection , host , user , passwd , NULL , opt_mysql_port , opt_mysql_unix_port , 0 ) ) ) { DBerror ( & mysql_connection , \"when<S2SV_blank>trying<S2SV_blank>to<S2SV_blank>connect\" ) ; DBUG_RETURN ( 1 ) ; } mysql_connection . reconnect = 1 ; DBUG_RETURN ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NullS ) ; SSL_SET_OPTIONS ( & mysql_connection ) ; <S2SV_ModEnd> if ( opt_protocol\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999014\n\n```\nCWE-125 static int mxf_parse_structural_metadata ( MXFContext * mxf ) { MXFPackage * material_package = NULL ; int i , j , k , ret ; av_log ( mxf -> fc , AV_LOG_TRACE , \"metadata<S2SV_blank>sets<S2SV_blank>count<S2SV_blank>%d\\\\n\" , mxf -> metadata_sets_count ) ; for ( i = 0 ; i < mxf -> packages_count ; i ++ ) { material_package = mxf_resolve_strong_ref ( mxf , & mxf -> packages_refs [ i ] , MaterialPackage ) ; if ( material_package ) break ; } if ( ! material_package ) { av_log ( mxf -> fc , AV_LOG_ERROR , \"no<S2SV_blank>material<S2SV_blank>package<S2SV_blank>found\\\\n\" ) ; return AVERROR_INVALIDDATA ; } mxf_add_umid_metadata ( & mxf -> fc -> metadata , \"material_package_umid\" , material_package ) ; if ( material_package -> name && material_package -> name [ 0 ] ) av_dict_set ( & mxf -> fc -> metadata , \"material_package_name\" , material_package -> name , 0 ) ; mxf_parse_package_comments ( mxf , & mxf -> fc -> metadata , material_package ) ; for ( i = 0 ; i < material_package -> tracks_count ; i ++ ) { MXFPackage * source_package = NULL ; MXFTrack * material_track = NULL ; MXFTrack * source_track = NULL ; MXFTrack * temp_track = NULL ; MXFDescriptor * descriptor = NULL ; MXFStructuralComponent * component = NULL ; MXFTimecodeComponent * mxf_tc = NULL ; UID * essence_container_ul = NULL ; const MXFCodecUL * codec_ul = NULL ; const MXFCodecUL * container_ul = NULL ; const MXFCodecUL * pix_fmt_ul = NULL ; AVStream * st ; AVTimecode tc ; int flags ; if ( ! ( material_track = mxf_resolve_strong_ref ( mxf , & material_package -> tracks_refs [ i ] , Track ) ) ) { av_log ( mxf -> fc , AV_LOG_ERROR , \"could<S2SV_blank>not<S2SV_blank>resolve<S2SV_blank>material<S2SV_blank>track<S2SV_blank>strong<S2SV_blank>ref\\\\n\" ) ; continue ; } if ( ( component = mxf_resolve_strong_ref ( mxf , & material_track -> sequence_ref , TimecodeComponent ) ) ) { mxf_tc = ( MXFTimecodeComponent * ) component ; flags = mxf_tc -> drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0 ; if ( av_timecode_init ( & tc , mxf_tc -> rate , flags , mxf_tc -> start_frame , mxf -> fc ) == 0 ) { mxf_add_timecode_metadata ( & mxf -> fc -> metadata , \"timecode\" , & tc ) ; } } if ( ! ( material_track -> sequence = mxf_resolve_strong_ref ( mxf , & material_track -> sequence_ref , Sequence ) ) ) { av_log ( mxf -> fc , AV_LOG_ERROR , \"could<S2SV_blank>not<S2SV_blank>resolve<S2SV_blank>material<S2SV_blank>track<S2SV_blank>sequence<S2SV_blank>strong<S2SV_blank>ref\\\\n\" ) ; continue ; } for ( j = 0 ; j < material_track -> sequence -> structural_components_count ; j ++ ) { component = mxf_resolve_strong_ref ( mxf , & material_track -> sequence -> structural_components_refs [ j ] , TimecodeComponent ) ; if ( ! component ) continue ; mxf_tc = ( MXFTimecodeComponent * ) component ; flags = mxf_tc -> drop_frame == 1 ? AV_TIMECODE_FLAG_DROPFRAME : 0 ; if ( av_timecode_init ( & tc , mxf_tc -> rate , flags , mxf_tc -> start_frame , mxf -> fc ) == 0 ) { mxf_add_timecode_metadata ( & mxf -> fc -> metadata , \"timecode\" , & tc ) ; break ; } } if ( material_track -> sequence -> structural_components_count > 1 ) av_log ( mxf -> fc , AV_LOG_WARNING , \"material<S2SV_blank>track<S2SV_blank>%d:<S2SV_blank>has<S2SV_blank>%d<S2SV_blank>components\\\\n\" , material_track -> track_id , material_track -> sequence -> structural_components_count ) ; for ( j = 0 ; j < material_track -> sequence -> structural_components_count ; j ++ ) { component = mxf_resolve_sourceclip ( mxf , & material_track -> sequence -> structural_components_refs [ j ] ) ; if ( ! component ) continue ; source_package = mxf_resolve_source_package ( mxf , component -> source_package_ul , component -> source_package_uid ) ; if ( ! source_package ) { av_log ( mxf -> fc , AV_LOG_TRACE , \"material<S2SV_blank>track<S2SV_blank>%d:<S2SV_blank>no<S2SV_blank>corresponding<S2SV_blank>source<S2SV_blank>package<S2SV_blank>found\\\\n\" , material_track -> track_id ) ; continue ; } for ( k = 0 ; k < source_package -> tracks_count ; k ++ ) { if ( ! ( temp_track = mxf_resolve_strong_ref ( mxf , & source_package -> tracks_refs [ k ] , Track ) ) ) { av_log ( mxf -> fc , AV_LOG_ERROR , \"could<S2SV_blank>not<S2SV_blank>resolve<S2SV_blank>source<S2SV_blank>track<S2SV_blank>strong<S2SV_blank>ref\\\\n\" ) ; ret = AVERROR_INVALIDDATA ; goto fail_and_free ; } if ( temp_track -> track_id == component -> source_track_id ) { source_track = temp_track ; break ; } } if ( ! source_track ) { av_log ( mxf -> fc , AV_LOG_ERROR , \"material<S2SV_blank>track<S2SV_blank>%d:<S2SV_blank>no<S2SV_blank>corresponding<S2SV_blank>source<S2SV_blank>track<S2SV_blank>found\\\\n\" , material_track -> track_id ) ; break ; } for ( k = 0 ; k < mxf -> essence_container_data_count ; k ++ ) { MXFEssenceContainerData * essence_data ; if ( ! ( essence_data = mxf_resolve_strong_ref ( mxf , & mxf -> essence_container_data_refs [ k ] , EssenceContainerData ) ) ) { <S2SV_StartBug> av_log ( mxf , AV_LOG_TRACE , \"could<S2SV_blank>not<S2SV_blank>resolve<S2SV_blank>essence<S2SV_blank>container<S2SV_blank>data<S2SV_blank>strong<S2SV_blank>ref\\\\n\" ) ; <S2SV_EndBug> continue ; } if ( ! memcmp ( component -> source_package_ul , essence_data -> package_ul , sizeof ( UID ) ) && ! memcmp ( component -> source_package_uid , essence_data -> package_uid , sizeof ( UID ) ) ) { source_track -> body_sid = essence_data -> body_sid ; source_track -> index_sid = essence_data -> index_sid ; break ; } } if ( source_track && component ) break ; } if ( ! source_track || ! component || ! source_package ) { if ( ( ret = mxf_add_metadata_stream ( mxf , material_track ) ) ) goto fail_and_free ; continue ; } if ( ! ( source_track -> sequence = mxf_resolve_strong_ref ( mxf , & source_track -> sequence_ref , Sequence ) ) ) { av_log ( mxf -> fc , AV_LOG_ERROR , \"could<S2SV_blank>not<S2SV_blank>resolve<S2SV_blank>source<S2SV_blank>track<S2SV_blank>sequence<S2SV_blank>strong<S2SV_blank>ref\\\\n\" ) ; ret = AVERROR_INVALIDDATA ; goto fail_and_free ; } if ( memcmp ( material_track -> sequence -> data_definition_ul , source_track -> sequence -> data_definition_ul , 16 ) ) { av_log ( mxf -> fc , AV_LOG_ERROR , \"material<S2SV_blank>track<S2SV_blank>%d:<S2SV_blank>DataDefinition<S2SV_blank>mismatch\\\\n\" , material_track -> track_id ) ; continue ; } st = avformat_new_stream ( mxf -> fc , NULL ) ; if ( ! st ) { av_log ( mxf -> fc , AV_LOG_ERROR , \"could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>stream\\\\n\" ) ; ret = AVERROR ( ENOMEM ) ; goto fail_and_free ; } st -> id = material_track -> track_id ; st -> priv_data = source_track ; source_package -> descriptor = mxf_resolve_strong_ref ( mxf , & source_package -> descriptor_ref , AnyType ) ; descriptor = mxf_resolve_multidescriptor ( mxf , source_package -> descriptor , source_track -> track_id ) ; if ( descriptor && descriptor -> duration != AV_NOPTS_VALUE ) source_track -> original_duration = st -> duration = FFMIN ( descriptor -> duration , component -> duration ) ; else source_track -> original_duration = st -> duration = component -> duration ; if ( st -> duration == - 1 ) st -> duration = AV_NOPTS_VALUE ; st -> start_time = component -> start_position ; if ( material_track -> edit_rate . num <= 0 || material_track -> edit_rate . den <= 0 ) { av_log ( mxf -> fc , AV_LOG_WARNING , \"Invalid<S2SV_blank>edit<S2SV_blank>rate<S2SV_blank>(%d/%d)<S2SV_blank>found<S2SV_blank>on<S2SV_blank>stream<S2SV_blank>#%d,<S2SV_blank>\" \"defaulting<S2SV_blank>to<S2SV_blank>25/1\\\\n\" , material_track -> edit_rate . num , material_track -> edit_rate . den , st -> index ) ; material_track -> edit_rate = ( AVRational ) { 25 , 1 } ; } avpriv_set_pts_info ( st , 64 , material_track -> edit_rate . den , material_track -> edit_rate . num ) ; source_track -> edit_rate = material_track -> edit_rate ; PRINT_KEY ( mxf -> fc , \"data<S2SV_blank>definition<S2SV_blank><S2SV_blank><S2SV_blank>ul\" , source_track -> sequence -> data_definition_ul ) ; codec_ul = mxf_get_codec_ul ( ff_mxf_data_definition_uls , & source_track -> sequence -> data_definition_ul ) ; st -> codecpar -> codec_type = codec_ul -> id ; if ( ! descriptor ) { av_log ( mxf -> fc , AV_LOG_INFO , \"source<S2SV_blank>track<S2SV_blank>%d:<S2SV_blank>stream<S2SV_blank>%d,<S2SV_blank>no<S2SV_blank>descriptor<S2SV_blank>found\\\\n\" , source_track -> track_id , st -> index ) ; continue ; } PRINT_KEY ( mxf -> fc , \"essence<S2SV_blank>codec<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>ul\" , descriptor -> essence_codec_ul ) ; PRINT_KEY ( mxf -> fc , \"essence<S2SV_blank>container<S2SV_blank>ul\" , descriptor -> essence_container_ul ) ; essence_container_ul = & descriptor -> essence_container_ul ; source_track -> wrapping = ( mxf -> op == OPAtom ) ? ClipWrapped : mxf_get_wrapping_kind ( essence_container_ul ) ; if ( source_track -> wrapping == UnknownWrapped ) av_log ( mxf -> fc , AV_LOG_INFO , \"wrapping<S2SV_blank>of<S2SV_blank>stream<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>unknown\\\\n\" , st -> index ) ; if ( IS_KLV_KEY ( essence_container_ul , mxf_encrypted_essence_container ) ) { av_log ( mxf -> fc , AV_LOG_INFO , \"broken<S2SV_blank>encrypted<S2SV_blank>mxf<S2SV_blank>file\\\\n\" ) ; for ( k = 0 ; k < mxf -> metadata_sets_count ; k ++ ) { MXFMetadataSet * metadata = mxf -> metadata_sets [ k ] ; if ( metadata -> type == CryptoContext ) { essence_container_ul = & ( ( MXFCryptoContext * ) metadata ) -> source_container_ul ; break ; } } } codec_ul = mxf_get_codec_ul ( ff_mxf_codec_uls , & descriptor -> essence_codec_ul ) ; st -> codecpar -> codec_id = ( enum AVCodecID ) codec_ul -> id ; if ( st -> codecpar -> codec_id == AV_CODEC_ID_NONE ) { codec_ul = mxf_get_codec_ul ( ff_mxf_codec_uls , & descriptor -> codec_ul ) ; st -> codecpar -> codec_id = ( enum AVCodecID ) codec_ul -> id ; } av_log ( mxf -> fc , AV_LOG_VERBOSE , \"%s:<S2SV_blank>Universal<S2SV_blank>Label:<S2SV_blank>\" , avcodec_get_name ( st -> codecpar -> codec_id ) ) ; for ( k = 0 ; k < 16 ; k ++ ) { av_log ( mxf -> fc , AV_LOG_VERBOSE , \"%.2x\" , descriptor -> essence_codec_ul [ k ] ) ; if ( ! ( k + 1 & 19 ) || k == 5 ) av_log ( mxf -> fc , AV_LOG_VERBOSE , \".\" ) ; } av_log ( mxf -> fc , AV_LOG_VERBOSE , \"\\\\n\" ) ; mxf_add_umid_metadata ( & st -> metadata , \"file_package_umid\" , source_package ) ; if ( source_package -> name && source_package -> name [ 0 ] ) av_dict_set ( & st -> metadata , \"file_package_name\" , source_package -> name , 0 ) ; if ( material_track -> name && material_track -> name [ 0 ] ) av_dict_set ( & st -> metadata , \"track_name\" , material_track -> name , 0 ) ; mxf_parse_physical_source_package ( mxf , source_track , st ) ; if ( st -> codecpar -> codec_type == AVMEDIA_TYPE_VIDEO ) { source_track -> intra_only = mxf_is_intra_only ( descriptor ) ; container_ul = mxf_get_codec_ul ( mxf_picture_essence_container_uls , essence_container_ul ) ; if ( st -> codecpar -> codec_id == AV_CODEC_ID_NONE ) st -> codecpar -> codec_id = container_ul -> id ; st -> codecpar -> width = descriptor -> width ; st -> codecpar -> height = descriptor -> height ; switch ( descriptor -> frame_layout ) { case FullFrame : st -> codecpar -> field_order = AV_FIELD_PROGRESSIVE ; break ; case OneField : av_log ( mxf -> fc , AV_LOG_INFO , \"OneField<S2SV_blank>frame<S2SV_blank>layout<S2SV_blank>isn\\'t<S2SV_blank>currently<S2SV_blank>supported\\\\n\" ) ; break ; case MixedFields : break ; case SegmentedFrame : st -> codecpar -> field_order = AV_FIELD_PROGRESSIVE ; case SeparateFields : av_log ( mxf -> fc , AV_LOG_DEBUG , \"video_line_map:<S2SV_blank>(%d,<S2SV_blank>%d),<S2SV_blank>field_dominance:<S2SV_blank>%d\\\\n\" , descriptor -> video_line_map [ 0 ] , descriptor -> video_line_map [ 1 ] , descriptor -> field_dominance ) ; if ( ( descriptor -> video_line_map [ 0 ] > 0 ) && ( descriptor -> video_line_map [ 1 ] > 0 ) ) { if ( ( descriptor -> video_line_map [ 0 ] + descriptor -> video_line_map [ 1 ] ) % 2 ) { switch ( descriptor -> field_dominance ) { case MXF_FIELD_DOMINANCE_DEFAULT : case MXF_FIELD_DOMINANCE_FF : st -> codecpar -> field_order = AV_FIELD_TT ; break ; case MXF_FIELD_DOMINANCE_FL : st -> codecpar -> field_order = AV_FIELD_TB ; break ; default : avpriv_request_sample ( mxf -> fc , \"Field<S2SV_blank>dominance<S2SV_blank>%d<S2SV_blank>support\" , descriptor -> field_dominance ) ; } } else { switch ( descriptor -> field_dominance ) { case MXF_FIELD_DOMINANCE_DEFAULT : case MXF_FIELD_DOMINANCE_FF : st -> codecpar -> field_order = AV_FIELD_BB ; break ; case MXF_FIELD_DOMINANCE_FL : st -> codecpar -> field_order = AV_FIELD_BT ; break ; default : avpriv_request_sample ( mxf -> fc , \"Field<S2SV_blank>dominance<S2SV_blank>%d<S2SV_blank>support\" , descriptor -> field_dominance ) ; } } } st -> codecpar -> height *= 2 ; break ; default : av_log ( mxf -> fc , AV_LOG_INFO , \"Unknown<S2SV_blank>frame<S2SV_blank>layout<S2SV_blank>type:<S2SV_blank>%d\\\\n\" , descriptor -> frame_layout ) ; } if ( st -> codecpar -> codec_id == AV_CODEC_ID_RAWVIDEO ) { st -> codecpar -> format = descriptor -> pix_fmt ; if ( st -> codecpar -> format == AV_PIX_FMT_NONE ) { pix_fmt_ul = mxf_get_codec_ul ( ff_mxf_pixel_format_uls , & descriptor -> essence_codec_ul ) ; st -> codecpar -> format = ( enum AVPixelFormat ) pix_fmt_ul -> id ; if ( st -> codecpar -> format == AV_PIX_FMT_NONE ) { st -> codecpar -> codec_tag = mxf_get_codec_ul ( ff_mxf_codec_tag_uls , & descriptor -> essence_codec_ul ) -> id ; if ( ! st -> codecpar -> codec_tag ) { if ( descriptor -> horiz_subsampling == 2 && descriptor -> vert_subsampling == 1 && descriptor -> component_depth == 8 ) { st -> codecpar -> format = AV_PIX_FMT_UYVY422 ; } } } } } st -> need_parsing = AVSTREAM_PARSE_HEADERS ; if ( material_track -> sequence -> origin ) { av_dict_set_int ( & st -> metadata , \"material_track_origin\" , material_track -> sequence -> origin , 0 ) ; } if ( source_track -> sequence -> origin ) { av_dict_set_int ( & st -> metadata , \"source_track_origin\" , source_track -> sequence -> origin , 0 ) ; } if ( descriptor -> aspect_ratio . num && descriptor -> aspect_ratio . den ) st -> display_aspect_ratio = descriptor -> aspect_ratio ; } else if ( st -> codecpar -> codec_type == AVMEDIA_TYPE_AUDIO ) { container_ul = mxf_get_codec_ul ( mxf_sound_essence_container_uls , essence_container_ul ) ; if ( st -> codecpar -> codec_id == AV_CODEC_ID_NONE || ( st -> codecpar -> codec_id == AV_CODEC_ID_PCM_ALAW && ( enum AVCodecID ) container_ul -> id != AV_CODEC_ID_NONE ) ) st -> codecpar -> codec_id = ( enum AVCodecID ) container_ul -> id ; st -> codecpar -> channels = descriptor -> channels ; st -> codecpar -> bits_per_coded_sample = descriptor -> bits_per_sample ; if ( descriptor -> sample_rate . den > 0 ) { st -> codecpar -> sample_rate = descriptor -> sample_rate . num / descriptor -> sample_rate . den ; avpriv_set_pts_info ( st , 64 , descriptor -> sample_rate . den , descriptor -> sample_rate . num ) ; } else { av_log ( mxf -> fc , AV_LOG_WARNING , \"invalid<S2SV_blank>sample<S2SV_blank>rate<S2SV_blank>(%d/%d)<S2SV_blank>\" \"found<S2SV_blank>for<S2SV_blank>stream<S2SV_blank>#%d,<S2SV_blank>time<S2SV_blank>base<S2SV_blank>forced<S2SV_blank>to<S2SV_blank>1/48000\\\\n\" , descriptor -> sample_rate . num , descriptor -> sample_rate . den , st -> index ) ; avpriv_set_pts_info ( st , 64 , 1 , 48000 ) ; } if ( st -> duration != AV_NOPTS_VALUE ) st -> duration = av_rescale_q ( st -> duration , av_inv_q ( material_track -> edit_rate ) , st -> time_base ) ; if ( st -> codecpar -> codec_id == AV_CODEC_ID_PCM_S16LE ) { if ( descriptor -> bits_per_sample > 16 && descriptor -> bits_per_sample <= 24 ) st -> codecpar -> codec_id = AV_CODEC_ID_PCM_S24LE ; else if ( descriptor -> bits_per_sample == 32 ) st -> codecpar -> codec_id = AV_CODEC_ID_PCM_S32LE ; } else if ( st -> codecpar -> codec_id == AV_CODEC_ID_PCM_S16BE ) { if ( descriptor -> bits_per_sample > 16 && descriptor -> bits_per_sample <= 24 ) st -> codecpar -> codec_id = AV_CODEC_ID_PCM_S24BE ; else if ( descriptor -> bits_per_sample == 32 ) st -> codecpar -> codec_id = AV_CODEC_ID_PCM_S32BE ; } else if ( st -> codecpar -> codec_id == AV_CODEC_ID_MP2 ) { st -> need_parsing = AVSTREAM_PARSE_FULL ; } } else if ( st -> codecpar -> codec_type == AVMEDIA_TYPE_DATA ) { enum AVMediaType type ; container_ul = mxf_get_codec_ul ( mxf_data_essence_container_uls , essence_container_ul ) ; if ( st -> codecpar -> codec_id == AV_CODEC_ID_NONE ) st -> codecpar -> codec_id = container_ul -> id ; type = avcodec_get_type ( st -> codecpar -> codec_id ) ; if ( type == AVMEDIA_TYPE_SUBTITLE ) st -> codecpar -> codec_type = type ; if ( container_ul -> desc ) av_dict_set ( & st -> metadata , \"data_type\" , container_ul -> desc , 0 ) ; } if ( descriptor -> extradata ) { if ( ! ff_alloc_extradata ( st -> codecpar , descriptor -> extradata_size ) ) { memcpy ( st -> codecpar -> extradata , descriptor -> extradata , descriptor -> extradata_size ) ; } } else if ( st -> codecpar -> codec_id == AV_CODEC_ID_H264 ) { int coded_width = mxf_get_codec_ul ( mxf_intra_only_picture_coded_width , & descriptor -> essence_codec_ul ) -> id ; if ( coded_width ) st -> codecpar -> width = coded_width ; ret = ff_generate_avci_extradata ( st ) ; if ( ret < 0 ) return ret ; } if ( st -> codecpar -> codec_type != AVMEDIA_TYPE_DATA && source_track -> wrapping != FrameWrapped ) { st -> need_parsing = AVSTREAM_PARSE_TIMESTAMPS ; } } ret = 0 ; fail_and_free : return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> av_log ( mxf -> fc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 void deinit_pci ( struct vmctx * ctx ) { struct pci_vdev_ops * ops ; struct businfo * bi ; struct slotinfo * si ; struct funcinfo * fi ; int bus , slot , func ; size_t lowmem ; struct mem_range mr ; bzero ( & mr , sizeof ( struct mem_range ) ) ; mr . name = \"PCI<S2SV_blank>ECFG\" ; mr . base = PCI_EMUL_ECFG_BASE ; mr . size = PCI_EMUL_ECFG_SIZE ; unregister_mem ( & mr ) ; lowmem = vm_get_lowmem_size ( ctx ) ; bzero ( & mr , sizeof ( struct mem_range ) ) ; mr . name = \"PCI<S2SV_blank>hole<S2SV_blank>(32-bit)\" ; mr . base = lowmem ; mr . size = ( 4ULL * 1024 * 1024 * 1024 ) - lowmem ; unregister_mem_fallback ( & mr ) ; bzero ( & mr , sizeof ( struct mem_range ) ) ; mr . name = \"PCI<S2SV_blank>hole<S2SV_blank>(64-bit)\" ; mr . base = PCI_EMUL_MEMBASE64 ; mr . size = PCI_EMUL_MEMLIMIT64 - PCI_EMUL_MEMBASE64 ; unregister_mem_fallback ( & mr ) ; for ( bus = 0 ; bus < MAXBUSES ; bus ++ ) { bi = pci_businfo [ bus ] ; if ( bi == NULL ) continue ; for ( slot = 0 ; slot < MAXSLOTS ; slot ++ ) { si = & bi -> slotinfo [ slot ] ; for ( func = 0 ; func < MAXFUNCS ; func ++ ) { fi = & si -> si_funcs [ func ] ; if ( fi -> fi_name == NULL ) continue ; ops = pci_emul_finddev ( fi -> fi_name ) ; <S2SV_StartBug> assert ( ops != NULL ) ; <S2SV_EndBug> pr_notice ( \"pci<S2SV_blank>deinit<S2SV_blank>%s\\\\n\" , fi -> fi_name ) ; pci_emul_deinit ( ctx , ops , bus , slot , func , fi ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> fi_name ) ; if ( ! ops ) { pr_warn ( \"No<S2SV_blank>driver<S2SV_blank>for<S2SV_blank>device<S2SV_blank>[%s]\\\\n\" , fi -> fi_name ) ; continue ; } <S2SV_ModEnd> pr_notice ( \"pci<S2SV_blank>deinit<S2SV_blank>%s\\\\n\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8539\n\n```\nCWE-264 static int trusted_update ( struct key * key , struct key_preparsed_payload * prep ) { <S2SV_StartBug> struct trusted_key_payload * p = key -> payload . data [ 0 ] ; <S2SV_EndBug> <S2SV_StartBug> struct trusted_key_payload * new_p ; <S2SV_EndBug> struct trusted_key_options * new_o ; size_t datalen = prep -> datalen ; char * datablob ; int ret = 0 ; if ( ! p -> migratable ) return - EPERM ; if ( datalen <= 0 || datalen > 32767 || ! prep -> data ) return - EINVAL ; datablob = kmalloc ( datalen + 1 , GFP_KERNEL ) ; if ( ! datablob ) return - ENOMEM ; new_o = trusted_options_alloc ( ) ; if ( ! new_o ) { ret = - ENOMEM ; goto out ; } new_p = trusted_payload_alloc ( key ) ; if ( ! new_p ) { ret = - ENOMEM ; goto out ; } memcpy ( datablob , prep -> data , datalen ) ; datablob [ datalen ] = '\\\\0' ; ret = datablob_parse ( datablob , new_p , new_o ) ; if ( ret != Opt_update ) { ret = - EINVAL ; kfree ( new_p ) ; goto out ; } if ( ! new_o -> keyhandle ) { ret = - EINVAL ; kfree ( new_p ) ; goto out ; } new_p -> migratable = p -> migratable ; new_p -> key_len = p -> key_len ; memcpy ( new_p -> key , p -> key , p -> key_len ) ; dump_payload ( p ) ; dump_payload ( new_p ) ; ret = key_seal ( new_p , new_o ) ; if ( ret < 0 ) { pr_info ( \"trusted_key:<S2SV_blank>key_seal<S2SV_blank>failed<S2SV_blank>(%d)\\\\n\" , ret ) ; kfree ( new_p ) ; goto out ; } if ( new_o -> pcrlock ) { ret = pcrlock ( new_o -> pcrlock ) ; if ( ret < 0 ) { pr_info ( \"trusted_key:<S2SV_blank>pcrlock<S2SV_blank>failed<S2SV_blank>(%d)\\\\n\" , ret ) ; kfree ( new_p ) ; goto out ; } } rcu_assign_keypointer ( key , new_p ) ; call_rcu ( & p -> rcu , trusted_rcu_free ) ; out : kfree ( datablob ) ; kfree ( new_o ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct trusted_key_payload * p ; struct trusted_key_payload * new_p ; struct trusted_key_options * new_o ; size_t datalen = prep -> datalen ; char * datablob ; int ret = 0 ; if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) return - ENOKEY ; <S2SV_ModStart> 0 ] ; <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6415\n\n```\nCWE-476 static void dex_parse_debug_item ( RBinFile * binfile , RBinDexObj * bin , RBinDexClass * c , int MI , int MA , int paddr , int ins_size , int insns_size , char * class_name , int regsz , int debug_info_off ) { struct r_bin_t * rbin = binfile -> rbin ; const ut8 * p4 = r_buf_get_at ( binfile -> buf , debug_info_off , NULL ) ; const ut8 * p4_end = p4 + binfile -> buf -> length - debug_info_off ; ut64 line_start ; ut64 parameters_size ; ut64 param_type_idx ; ut16 argReg = regsz - ins_size ; ut64 source_file_idx = c -> source_file ; RList * params , * debug_positions , * emitted_debug_locals = NULL ; bool keep = true ; if ( argReg > regsz ) { return ; } p4 = r_uleb128 ( p4 , p4_end - p4 , & line_start ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & parameters_size ) ; ut32 address = 0 ; ut32 line = line_start ; if ( ! ( debug_positions = r_list_newf ( ( RListFree ) free ) ) ) { return ; } if ( ! ( emitted_debug_locals = r_list_newf ( ( RListFree ) free ) ) ) { r_list_free ( debug_positions ) ; return ; } struct dex_debug_local_t debug_locals [ regsz ] ; memset ( debug_locals , 0 , sizeof ( struct dex_debug_local_t ) * regsz ) ; if ( ! ( MA & 0x0008 ) ) { debug_locals [ argReg ] . name = \"this\" ; debug_locals [ argReg ] . descriptor = r_str_newf ( \"%s;\" , class_name ) ; debug_locals [ argReg ] . startAddress = 0 ; debug_locals [ argReg ] . signature = NULL ; debug_locals [ argReg ] . live = true ; argReg ++ ; } if ( ! ( params = dex_method_signature2 ( bin , MI ) ) ) { r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; return ; } RListIter * iter = r_list_iterator ( params ) ; char * name ; char * type ; int reg ; r_list_foreach ( params , iter , type ) { if ( ( argReg >= regsz ) || ! type || parameters_size <= 0 ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; r_list_free ( emitted_debug_locals ) ; return ; } p4 = r_uleb128 ( p4 , p4_end - p4 , & param_type_idx ) ; param_type_idx -= 1 ; name = getstr ( bin , param_type_idx ) ; reg = argReg ; switch ( type [ 0 ] ) { case 'D' : case 'J' : argReg += 2 ; break ; default : argReg += 1 ; break ; } if ( name ) { debug_locals [ reg ] . name = name ; debug_locals [ reg ] . descriptor = type ; debug_locals [ reg ] . signature = NULL ; debug_locals [ reg ] . startAddress = address ; debug_locals [ reg ] . live = true ; } -- parameters_size ; } <S2SV_StartBug> ut8 opcode = * ( p4 ++ ) & 0xff ; <S2SV_EndBug> while ( keep ) { switch ( opcode ) { case 0x0 : keep = false ; break ; case 0x1 : { ut64 addr_diff ; p4 = r_uleb128 ( p4 , p4_end - p4 , & addr_diff ) ; address += addr_diff ; } break ; case 0x2 : { st64 line_diff = r_sleb128 ( & p4 , p4_end ) ; line += line_diff ; } break ; case 0x3 : { ut64 register_num ; ut64 name_idx ; ut64 type_idx ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & name_idx ) ; name_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & type_idx ) ; type_idx -= 1 ; if ( register_num >= regsz ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; return ; } if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . name = getstr ( bin , name_idx ) ; debug_locals [ register_num ] . descriptor = dex_type_descriptor ( bin , type_idx ) ; debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . signature = NULL ; debug_locals [ register_num ] . live = true ; } break ; case 0x4 : { ut64 register_num ; ut64 name_idx ; ut64 type_idx ; ut64 sig_idx ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; p4 = r_uleb128 ( p4 , p4_end - p4 , & name_idx ) ; name_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & type_idx ) ; type_idx -= 1 ; p4 = r_uleb128 ( p4 , p4_end - p4 , & sig_idx ) ; sig_idx -= 1 ; if ( register_num >= regsz ) { r_list_free ( debug_positions ) ; r_list_free ( params ) ; return ; } if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . name = getstr ( bin , name_idx ) ; debug_locals [ register_num ] . descriptor = dex_type_descriptor ( bin , type_idx ) ; debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . signature = getstr ( bin , sig_idx ) ; debug_locals [ register_num ] . live = true ; } break ; case 0x5 : { ut64 register_num ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; if ( debug_locals [ register_num ] . live ) { struct dex_debug_local_t * local = malloc ( sizeof ( struct dex_debug_local_t ) ) ; if ( ! local ) { keep = false ; break ; } local -> name = debug_locals [ register_num ] . name ; local -> descriptor = debug_locals [ register_num ] . descriptor ; local -> startAddress = debug_locals [ register_num ] . startAddress ; local -> signature = debug_locals [ register_num ] . signature ; local -> live = true ; local -> reg = register_num ; local -> endAddress = address ; r_list_append ( emitted_debug_locals , local ) ; } debug_locals [ register_num ] . live = false ; } break ; case 0x6 : { ut64 register_num ; p4 = r_uleb128 ( p4 , p4_end - p4 , & register_num ) ; if ( ! debug_locals [ register_num ] . live ) { debug_locals [ register_num ] . startAddress = address ; debug_locals [ register_num ] . live = true ; } } break ; case 0x7 : break ; case 0x8 : break ; case 0x9 : { p4 = r_uleb128 ( p4 , p4_end - p4 , & source_file_idx ) ; source_file_idx -- ; } break ; default : { int adjusted_opcode = opcode - 0x0a ; address += ( adjusted_opcode / 15 ) ; line += - 4 + ( adjusted_opcode % 15 ) ; struct dex_debug_position_t * position = malloc ( sizeof ( struct dex_debug_position_t ) ) ; if ( ! position ) { keep = false ; break ; } position -> source_file_idx = source_file_idx ; position -> address = address ; position -> line = line ; r_list_append ( debug_positions , position ) ; } break ; } opcode = * ( p4 ++ ) & 0xff ; } if ( ! binfile -> sdb_addrinfo ) { binfile -> sdb_addrinfo = sdb_new0 ( ) ; } char * fileline ; char offset [ 64 ] ; char * offset_ptr ; RListIter * iter1 ; struct dex_debug_position_t * pos ; r_list_foreach ( debug_positions , iter1 , pos ) { fileline = r_str_newf ( \"%s|%\" PFMT64d , getstr ( bin , pos -> source_file_idx ) , pos -> line ) ; offset_ptr = sdb_itoa ( pos -> address + paddr , offset , 16 ) ; sdb_set ( binfile -> sdb_addrinfo , offset_ptr , fileline , 0 ) ; sdb_set ( binfile -> sdb_addrinfo , fileline , offset_ptr , 0 ) ; } if ( ! dexdump ) { r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; r_list_free ( params ) ; return ; } RListIter * iter2 ; struct dex_debug_position_t * position ; rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>positions<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:\\\\n\" ) ; r_list_foreach ( debug_positions , iter2 , position ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04llx<S2SV_blank>line=%llu\\\\n\" , position -> address , position -> line ) ; } rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>locals<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>:\\\\n\" ) ; RListIter * iter3 ; struct dex_debug_local_t * local ; r_list_foreach ( emitted_debug_locals , iter3 , local ) { if ( local -> signature ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , local -> startAddress , local -> endAddress , local -> reg , local -> name , local -> descriptor , local -> signature ) ; } else { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , local -> startAddress , local -> endAddress , local -> reg , local -> name , local -> descriptor ) ; } } for ( reg = 0 ; reg < regsz ; reg ++ ) { if ( debug_locals [ reg ] . live ) { if ( debug_locals [ reg ] . signature ) { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s<S2SV_blank>\" \"%s\\\\n\" , debug_locals [ reg ] . startAddress , insns_size , reg , debug_locals [ reg ] . name , debug_locals [ reg ] . descriptor , debug_locals [ reg ] . signature ) ; } else { rbin -> cb_printf ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04x<S2SV_blank>-<S2SV_blank>0x%04x<S2SV_blank>reg=%d<S2SV_blank>%s<S2SV_blank>%s\" \"\\\\n\" , debug_locals [ reg ] . startAddress , insns_size , reg , debug_locals [ reg ] . name , debug_locals [ reg ] . descriptor ) ; } } } r_list_free ( debug_positions ) ; r_list_free ( emitted_debug_locals ) ; r_list_free ( params ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> parameters_size ; } if ( p4 <= 0 ) { return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 static int snd_ctl_elem_user_tlv ( struct snd_kcontrol * kcontrol , int op_flag , unsigned int size , unsigned int __user * tlv ) { struct user_element * ue = kcontrol -> private_data ; int change = 0 ; void * new_data ; if ( op_flag > 0 ) { if ( size > 1024 * 128 ) return - EINVAL ; new_data = memdup_user ( tlv , size ) ; if ( IS_ERR ( new_data ) ) return PTR_ERR ( new_data ) ; <S2SV_StartBug> change = ue -> tlv_data_size != size ; <S2SV_EndBug> if ( ! change ) change = memcmp ( ue -> tlv_data , new_data , size ) ; kfree ( ue -> tlv_data ) ; ue -> tlv_data = new_data ; ue -> tlv_data_size = size ; <S2SV_StartBug> } else { <S2SV_EndBug> if ( ! ue -> tlv_data_size || ! ue -> tlv_data ) <S2SV_StartBug> return - ENXIO ; <S2SV_EndBug> <S2SV_StartBug> if ( size < ue -> tlv_data_size ) <S2SV_EndBug> <S2SV_StartBug> return - ENOSPC ; <S2SV_EndBug> <S2SV_StartBug> if ( copy_to_user ( tlv , ue -> tlv_data , ue -> tlv_data_size ) ) <S2SV_EndBug> <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> return change ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> new_data ) ; mutex_lock ( & ue -> card -> user_ctl_lock ) ; <S2SV_ModStart> = size ; mutex_unlock ( & ue -> card -> user_ctl_lock ) ; <S2SV_ModStart> } else { int ret = 0 ; mutex_lock ( & ue -> card -> user_ctl_lock ) ; <S2SV_ModStart> -> tlv_data ) { ret = <S2SV_ModEnd> - ENXIO ; <S2SV_ModStart> - ENXIO ; goto err_unlock ; } <S2SV_ModStart> -> tlv_data_size ) { ret = <S2SV_ModEnd> - ENOSPC ; <S2SV_ModStart> - ENOSPC ; goto err_unlock ; } <S2SV_ModStart> tlv_data_size ) ) ret = <S2SV_ModEnd> - EFAULT ; <S2SV_ModStart> - EFAULT ; err_unlock : mutex_unlock ( & ue -> card -> user_ctl_lock ) ; if ( ret ) return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5354\n\n```\nCWE-476 static int dissect_usb_ms_bulk ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * parent_tree , void * data ) { usb_conv_info_t * usb_conv_info ; usb_ms_conv_info_t * usb_ms_conv_info ; proto_tree * tree ; proto_item * ti ; guint32 signature = 0 ; int offset = 0 ; gboolean is_request ; itl_nexus_t * itl ; itlq_nexus_t * itlq ; if ( data == NULL ) return 0 ; usb_conv_info = ( usb_conv_info_t * ) data ; usb_ms_conv_info = ( usb_ms_conv_info_t * ) usb_conv_info -> class_data ; if ( ! usb_ms_conv_info ) { usb_ms_conv_info = wmem_new ( wmem_file_scope ( ) , usb_ms_conv_info_t ) ; usb_ms_conv_info -> itl = wmem_tree_new ( wmem_file_scope ( ) ) ; usb_ms_conv_info -> itlq = wmem_tree_new ( wmem_file_scope ( ) ) ; usb_conv_info -> class_data = usb_ms_conv_info ; <S2SV_StartBug> } <S2SV_EndBug> is_request = ( pinfo -> srcport == NO_ENDPOINT ) ; col_set_str ( pinfo -> cinfo , COL_PROTOCOL , \"USBMS\" ) ; col_clear ( pinfo -> cinfo , COL_INFO ) ; ti = proto_tree_add_protocol_format ( parent_tree , proto_usb_ms , tvb , 0 , - 1 , \"USB<S2SV_blank>Mass<S2SV_blank>Storage\" ) ; tree = proto_item_add_subtree ( ti , ett_usb_ms ) ; signature = tvb_get_letohl ( tvb , offset ) ; if ( is_request && ( signature == 0x43425355 ) && ( tvb_reported_length ( tvb ) == 31 ) ) { tvbuff_t * cdb_tvb ; int cdbrlen , cdblen ; guint8 lun , flags ; guint32 datalen ; proto_tree_add_item ( tree , hf_usb_ms_dCBWSignature , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWTag , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWDataTransferLength , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; datalen = tvb_get_letohl ( tvb , offset ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWFlags , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; flags = tvb_get_guint8 ( tvb , offset ) ; offset += 1 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWTarget , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; proto_tree_add_item ( tree , hf_usb_ms_dCBWLUN , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; lun = tvb_get_guint8 ( tvb , offset ) & 0x0f ; offset += 1 ; itl = ( itl_nexus_t * ) wmem_tree_lookup32 ( usb_ms_conv_info -> itl , lun ) ; if ( ! itl ) { itl = wmem_new ( wmem_file_scope ( ) , itl_nexus_t ) ; itl -> cmdset = 0xff ; itl -> conversation = NULL ; wmem_tree_insert32 ( usb_ms_conv_info -> itl , lun , itl ) ; } itlq = ( itlq_nexus_t * ) wmem_tree_lookup32 ( usb_ms_conv_info -> itlq , pinfo -> num ) ; if ( ! itlq ) { itlq = wmem_new ( wmem_file_scope ( ) , itlq_nexus_t ) ; itlq -> lun = lun ; itlq -> scsi_opcode = 0xffff ; itlq -> task_flags = 0 ; if ( datalen ) { if ( flags & 0x80 ) { itlq -> task_flags |= SCSI_DATA_READ ; } else { itlq -> task_flags |= SCSI_DATA_WRITE ; } } itlq -> data_length = datalen ; itlq -> bidir_data_length = 0 ; itlq -> fc_time = pinfo -> abs_ts ; itlq -> first_exchange_frame = pinfo -> num ; itlq -> last_exchange_frame = 0 ; itlq -> flags = 0 ; itlq -> alloc_len = 0 ; itlq -> extra_data = NULL ; wmem_tree_insert32 ( usb_ms_conv_info -> itlq , pinfo -> num , itlq ) ; } proto_tree_add_item ( tree , hf_usb_ms_dCBWCBLength , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; cdbrlen = tvb_get_guint8 ( tvb , offset ) & 0x1f ; offset += 1 ; cdblen = cdbrlen ; if ( cdblen > tvb_captured_length_remaining ( tvb , offset ) ) { cdblen = tvb_captured_length_remaining ( tvb , offset ) ; } if ( cdblen ) { cdb_tvb = tvb_new_subset ( tvb , offset , cdblen , cdbrlen ) ; dissect_scsi_cdb ( cdb_tvb , pinfo , parent_tree , SCSI_DEV_UNKNOWN , itlq , itl ) ; } return tvb_captured_length ( tvb ) ; } if ( ( ! is_request ) && ( signature == 0x53425355 ) && ( tvb_reported_length ( tvb ) == 13 ) ) { guint8 status ; proto_tree_add_item ( tree , hf_usb_ms_dCSWSignature , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCBWTag , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCSWDataResidue , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( tree , hf_usb_ms_dCSWStatus , tvb , offset , 1 , ENC_LITTLE_ENDIAN ) ; status = tvb_get_guint8 ( tvb , offset ) ; itlq = ( itlq_nexus_t * ) wmem_tree_lookup32_le ( usb_ms_conv_info -> itlq , pinfo -> num ) ; if ( ! itlq ) { return tvb_captured_length ( tvb ) ; } itlq -> last_exchange_frame = pinfo -> num ; itl = ( itl_nexus_t * ) wmem_tree_lookup32 ( usb_ms_conv_info -> itl , itlq -> lun ) ; if ( ! itl ) { return tvb_captured_length ( tvb ) ; } if ( ! status ) { dissect_scsi_rsp ( tvb , pinfo , parent_tree , itlq , itl , 0 ) ; } else { dissect_scsi_rsp ( tvb , pinfo , parent_tree , itlq , itl , 0x02 ) ; } return tvb_captured_length ( tvb ) ; } itlq = ( itlq_nexus_t * ) wmem_tree_lookup32_le ( usb_ms_conv_info -> itlq , pinfo -> num ) ; if ( ! itlq ) { return tvb_captured_length ( tvb ) ; } itl = ( itl_nexus_t * ) wmem_tree_lookup32 ( usb_ms_conv_info -> itl , itlq -> lun ) ; if ( ! itl ) { return tvb_captured_length ( tvb ) ; } dissect_scsi_payload ( tvb , pinfo , parent_tree , is_request , itlq , itl , 0 ) ; return tvb_captured_length ( tvb ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = usb_ms_conv_info ; usb_conv_info -> class_data_type = USB_CONV_MASS_STORAGE ; } else if ( usb_conv_info -> class_data_type != USB_CONV_MASS_STORAGE ) { return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12898\n\n```\nCWE-125 static const uint32_t * parserep ( netdissect_options * ndo , register const struct sunrpc_msg * rp , register u_int length ) { register const uint32_t * dp ; u_int len ; enum sunrpc_accept_stat astat ; dp = ( ( const uint32_t * ) & rp -> rm_reply ) + 1 ; ND_TCHECK ( dp [ 1 ] ) ; len = EXTRACT_32BITS ( & dp [ 1 ] ) ; if ( len >= length ) return ( NULL ) ; dp += ( len + ( 2 * sizeof ( uint32_t ) + 3 ) ) / sizeof ( uint32_t ) ; <S2SV_StartBug> ND_TCHECK2 ( dp [ 0 ] , 0 ) ; <S2SV_EndBug> astat = ( enum sunrpc_accept_stat ) EXTRACT_32BITS ( dp ) ; if ( astat != SUNRPC_SUCCESS ) { ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , tok2str ( sunrpc_str , \"ar_stat<S2SV_blank>%d\" , astat ) ) ) ; nfserr = 1 ; return ( NULL ) ; } ND_TCHECK2 ( * dp , sizeof ( astat ) ) ; return ( ( const uint32_t * ) ( sizeof ( astat ) + ( ( const char * ) dp ) ) ) ; trunc : return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t ) ; ND_TCHECK <S2SV_ModEnd> ( dp [ <S2SV_ModStart> [ 0 ] <S2SV_ModEnd> ) ; astat\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_b ( VP9_COMP * cpi , const TileInfo * const tile , <S2SV_EndBug> TOKENEXTRA * * tp , int mi_row , int mi_col , <S2SV_StartBug> int output_enabled , BLOCK_SIZE bsize ) { <S2SV_EndBug> <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> <S2SV_StartBug> if ( bsize < BLOCK_8X8 ) { <S2SV_EndBug> if ( x -> ab_index > 0 ) return ; } <S2SV_StartBug> set_offsets ( cpi , tile , mi_row , mi_col , bsize ) ; <S2SV_EndBug> <S2SV_StartBug> update_state ( cpi , get_block_context ( x , bsize ) , mi_row , mi_col , bsize , <S2SV_EndBug> output_enabled ) ; <S2SV_StartBug> encode_superblock ( cpi , tp , output_enabled , mi_row , mi_col , bsize ) ; <S2SV_EndBug> if ( output_enabled ) { <S2SV_StartBug> update_stats ( cpi ) ; <S2SV_EndBug> ( * tp ) -> token = EOSB_TOKEN ; ( * tp ) ++ ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * const tile , ThreadData * td <S2SV_ModStart> , BLOCK_SIZE bsize , PICK_MODE_CONTEXT * ctx <S2SV_ModStart> x = & td <S2SV_ModEnd> -> mb ; <S2SV_ModStart> -> mb ; <S2SV_ModEnd> set_offsets ( cpi <S2SV_ModStart> cpi , tile , x <S2SV_ModStart> ( cpi , td , ctx <S2SV_ModEnd> , mi_row , <S2SV_ModStart> encode_superblock ( cpi , td <S2SV_ModStart> mi_col , bsize , ctx <S2SV_ModStart> { update_stats ( & cpi -> common , td <S2SV_ModEnd> ) ; (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-13113\n\n```\nCWE-416 static void exif_mnote_data_pentax_load ( ExifMnoteData * en , const unsigned char * buf , unsigned int buf_size ) { ExifMnoteDataPentax * n = ( ExifMnoteDataPentax * ) en ; size_t i , tcount , o , datao , base = 0 ; ExifShort c ; if ( ! n || ! buf || ! buf_size ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataPentax\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } datao = 6 + n -> offset ; if ( CHECKOVERFLOW ( datao , buf_size , 8 ) ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataPentax\" , \"Short<S2SV_blank>MakerNote\" ) ; return ; } if ( ! memcmp ( buf + datao , \"AOC\" , 4 ) ) { if ( ( buf [ datao + 4 ] == 'I' ) && ( buf [ datao + 5 ] == 'I' ) ) { n -> version = pentaxV3 ; n -> order = EXIF_BYTE_ORDER_INTEL ; } else if ( ( buf [ datao + 4 ] == 'M' ) && ( buf [ datao + 5 ] == 'M' ) ) { n -> version = pentaxV3 ; n -> order = EXIF_BYTE_ORDER_MOTOROLA ; } else { n -> version = pentaxV2 ; } exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Parsing<S2SV_blank>Pentax<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v%d...\" , ( int ) n -> version ) ; datao += 4 + 2 ; base = MNOTE_PENTAX2_TAG_BASE ; } else if ( ! memcmp ( buf + datao , \"QVC\" , 4 ) ) { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Parsing<S2SV_blank>Casio<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v2...\" ) ; n -> version = casioV2 ; base = MNOTE_CASIO2_TAG_BASE ; datao += 4 + 2 ; } else { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Parsing<S2SV_blank>Pentax<S2SV_blank>maker<S2SV_blank>note<S2SV_blank>v1...\" ) ; n -> version = pentaxV1 ; } c = exif_get_short ( buf + datao , n -> order ) ; datao += 2 ; exif_mnote_data_pentax_clear ( n ) ; n -> entries = exif_mem_alloc ( en -> mem , sizeof ( MnotePentaxEntry ) * c ) ; if ( ! n -> entries ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteDataPentax\" , sizeof ( MnotePentaxEntry ) * c ) ; return ; } tcount = 0 ; for ( i = c , o = datao ; i ; -- i , o += 12 ) { size_t s ; <S2SV_StartBug> if ( CHECKOVERFLOW ( o , buf_size , 12 ) ) { <S2SV_EndBug> exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataPentax\" , \"Short<S2SV_blank>MakerNote\" ) ; break ; } n -> entries [ tcount ] . tag = exif_get_short ( buf + o + 0 , n -> order ) + base ; n -> entries [ tcount ] . format = exif_get_short ( buf + o + 2 , n -> order ) ; n -> entries [ tcount ] . components = exif_get_long ( buf + o + 4 , n -> order ) ; n -> entries [ tcount ] . order = n -> order ; exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnotePentax\" , \"Loading<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')...\" , n -> entries [ tcount ] . tag , mnote_pentax_tag_get_name ( n -> entries [ tcount ] . tag ) ) ; if ( exif_format_get_size ( n -> entries [ tcount ] . format ) && buf_size / exif_format_get_size ( n -> entries [ tcount ] . format ) < n -> entries [ tcount ] . components ) { exif_log ( en -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifMnoteDataPentax\" , \"Tag<S2SV_blank>size<S2SV_blank>overflow<S2SV_blank>detected<S2SV_blank>(%u<S2SV_blank>*<S2SV_blank>%lu)\" , exif_format_get_size ( n -> entries [ tcount ] . format ) , n -> entries [ tcount ] . components ) ; break ; } s = exif_format_get_size ( n -> entries [ tcount ] . format ) * n -> entries [ tcount ] . components ; n -> entries [ tcount ] . size = s ; if ( s ) { size_t dataofs = o + 8 ; if ( s > 4 ) dataofs = exif_get_long ( buf + dataofs , n -> order ) + 6 ; if ( CHECKOVERFLOW ( dataofs , buf_size , s ) ) { exif_log ( en -> log , EXIF_LOG_CODE_DEBUG , \"ExifMnoteDataPentax\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>\" \"of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , ( unsigned ) ( dataofs + s ) , buf_size ) ; continue ; } n -> entries [ tcount ] . data = exif_mem_alloc ( en -> mem , s ) ; if ( ! n -> entries [ tcount ] . data ) { EXIF_LOG_NO_MEMORY ( en -> log , \"ExifMnoteDataPentax\" , s ) ; continue ; } memcpy ( n -> entries [ tcount ] . data , buf + dataofs , s ) ; } ++ tcount ; } n -> count = tcount ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t s ; memset ( & n -> entries [ tcount ] , 0 , sizeof ( MnotePentaxEntry ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7274\n\n```\nCWE-476 RCMS * r_pkcs7_parse_cms ( const ut8 * buffer , ut32 length ) { RASN1Object * object ; RCMS * container ; if ( ! buffer || ! length ) { return NULL ; } container = R_NEW0 ( RCMS ) ; if ( ! container ) { return NULL ; } object = r_asn1_create_object ( buffer , length ) ; <S2SV_StartBug> if ( ! object || object -> list . length != 2 || ! object -> list . objects [ 0 ] || object -> list . objects [ 1 ] -> list . length != 1 ) { <S2SV_EndBug> r_asn1_free_object ( object ) ; free ( container ) ; return NULL ; } container -> contentType = r_asn1_stringify_oid ( object -> list . objects [ 0 ] -> sector , object -> list . objects [ 0 ] -> length ) ; r_pkcs7_parse_signeddata ( & container -> signedData , object -> list . objects [ 1 ] -> list . objects [ 0 ] ) ; r_asn1_free_object ( object ) ; return container ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> list . objects || ! object -> list . objects [ 0 ] || ! object -> list . objects [ 1 ] || <S2SV_ModEnd> object -> list\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-17(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8172\n\n```\nCWE-17 void fput ( struct file * file ) { if ( atomic_long_dec_and_test ( & file -> f_count ) ) { <S2SV_StartBug> struct task_struct * task = current ; <S2SV_EndBug> file_sb_list_del ( file ) ; if ( likely ( ! in_interrupt ( ) && ! ( task -> flags & PF_KTHREAD ) ) ) { init_task_work ( & file -> f_u . fu_rcuhead , ____fput ) ; if ( ! task_work_add ( task , & file -> f_u . fu_rcuhead , true ) ) return ; } if ( llist_add ( & file -> f_u . fu_llist , & delayed_fput_list ) ) schedule_work ( & delayed_fput_work ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> task = current <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20030\n\n```\nCWE-400 static void exif_data_load_data_content ( ExifData * data , ExifIfd ifd , const unsigned char * d , <S2SV_StartBug> unsigned int ds , unsigned int offset , unsigned int recursion_depth ) <S2SV_EndBug> { ExifLong o , thumbnail_offset = 0 , thumbnail_length = 0 ; ExifShort n ; ExifEntry * entry ; unsigned int i ; ExifTag tag ; if ( ! data || ! data -> priv ) return ; if ( ( ( ( int ) ifd ) < 0 ) || ( ( ( int ) ifd ) >= EXIF_IFD_COUNT ) ) return ; <S2SV_StartBug> if ( recursion_depth > 12 ) { <S2SV_EndBug> exif_log ( data -> priv -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifData\" , <S2SV_StartBug> \"Deep<S2SV_blank>recursion<S2SV_blank>detected!\" ) ; <S2SV_EndBug> return ; } if ( ( offset + 2 < offset ) || ( offset + 2 < 2 ) || ( offset + 2 > ds ) ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_CORRUPT_DATA , \"ExifData\" , \"Tag<S2SV_blank>data<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>buffer<S2SV_blank>(%u<S2SV_blank>><S2SV_blank>%u)\" , offset + 2 , ds ) ; return ; } n = exif_get_short ( d + offset , data -> priv -> order ) ; exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Loading<S2SV_blank>%hu<S2SV_blank>entries...\" , n ) ; offset += 2 ; if ( offset + 12 * n > ds ) { n = ( ds - offset ) / 12 ; exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Short<S2SV_blank>data;<S2SV_blank>only<S2SV_blank>loading<S2SV_blank>%hu<S2SV_blank>entries...\" , n ) ; } for ( i = 0 ; i < n ; i ++ ) { tag = exif_get_short ( d + offset + 12 * i , data -> priv -> order ) ; switch ( tag ) { case EXIF_TAG_EXIF_IFD_POINTER : case EXIF_TAG_GPS_INFO_IFD_POINTER : case EXIF_TAG_INTEROPERABILITY_IFD_POINTER : case EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH : case EXIF_TAG_JPEG_INTERCHANGE_FORMAT : o = exif_get_long ( d + offset + 12 * i + 8 , data -> priv -> order ) ; exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Sub-IFD<S2SV_blank>entry<S2SV_blank>0x%x<S2SV_blank>(\\'%s\\')<S2SV_blank>at<S2SV_blank>%u.\" , tag , exif_tag_get_name ( tag ) , o ) ; switch ( tag ) { case EXIF_TAG_EXIF_IFD_POINTER : CHECK_REC ( EXIF_IFD_EXIF ) ; <S2SV_StartBug> exif_data_load_data_content ( data , EXIF_IFD_EXIF , d , ds , o , recursion_depth + 1 ) ; <S2SV_EndBug> break ; case EXIF_TAG_GPS_INFO_IFD_POINTER : CHECK_REC ( EXIF_IFD_GPS ) ; <S2SV_StartBug> exif_data_load_data_content ( data , EXIF_IFD_GPS , d , ds , o , recursion_depth + 1 ) ; <S2SV_EndBug> break ; case EXIF_TAG_INTEROPERABILITY_IFD_POINTER : CHECK_REC ( EXIF_IFD_INTEROPERABILITY ) ; <S2SV_StartBug> exif_data_load_data_content ( data , EXIF_IFD_INTEROPERABILITY , d , ds , o , recursion_depth + 1 ) ; <S2SV_EndBug> break ; case EXIF_TAG_JPEG_INTERCHANGE_FORMAT : thumbnail_offset = o ; if ( thumbnail_offset && thumbnail_length ) exif_data_load_data_thumbnail ( data , d , ds , thumbnail_offset , thumbnail_length ) ; break ; case EXIF_TAG_JPEG_INTERCHANGE_FORMAT_LENGTH : thumbnail_length = o ; if ( thumbnail_offset && thumbnail_length ) exif_data_load_data_thumbnail ( data , d , ds , thumbnail_offset , thumbnail_length ) ; break ; default : return ; } break ; default : if ( ! exif_tag_get_name_in_ifd ( tag , ifd ) ) { if ( ! memcmp ( d + offset + 12 * i , \"\\\\0\\\\0\\\\0\\\\0\" , 4 ) ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Skipping<S2SV_blank>empty<S2SV_blank>entry<S2SV_blank>at<S2SV_blank>position<S2SV_blank>%u<S2SV_blank>in<S2SV_blank>\\'%s\\'.\" , i , exif_ifd_get_name ( ifd ) ) ; break ; } exif_log ( data -> priv -> log , EXIF_LOG_CODE_DEBUG , \"ExifData\" , \"Unknown<S2SV_blank>tag<S2SV_blank>0x%04x<S2SV_blank>(entry<S2SV_blank>%u<S2SV_blank>in<S2SV_blank>\\'%s\\').<S2SV_blank>Please<S2SV_blank>report<S2SV_blank>this<S2SV_blank>tag<S2SV_blank>\" \"to<S2SV_blank><libexif-devel@lists.sourceforge.net>.\" , tag , i , exif_ifd_get_name ( ifd ) ) ; if ( data -> priv -> options & EXIF_DATA_OPTION_IGNORE_UNKNOWN_TAGS ) break ; } entry = exif_entry_new_mem ( data -> priv -> mem ) ; if ( ! entry ) { exif_log ( data -> priv -> log , EXIF_LOG_CODE_NO_MEMORY , \"ExifData\" , \"Could<S2SV_blank>not<S2SV_blank>allocate<S2SV_blank>memory\" ) ; return ; } if ( exif_data_load_data_entry ( data , entry , d , ds , offset + 12 * i ) ) exif_content_add_entry ( data -> ifd [ ifd ] , entry ) ; exif_entry_unref ( entry ) ; break ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , unsigned int recursion_cost <S2SV_ModEnd> ) { ExifLong <S2SV_ModStart> ; if ( recursion_cost > 170 <S2SV_ModEnd> ) { exif_log <S2SV_ModStart> , \"ExifData\" , \"Deep/expensive<S2SV_blank>recursion<S2SV_blank>detected!\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> , o , recursion_cost + level_cost ( n ) <S2SV_ModEnd> ) ; break <S2SV_ModStart> , o , recursion_cost + level_cost ( n ) <S2SV_ModEnd> ) ; break <S2SV_ModStart> , o , recursion_cost + level_cost ( n ) <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 static int mem_write ( jas_stream_obj_t * obj , char * buf , int cnt ) { <S2SV_StartBug> int n ; <S2SV_EndBug> int ret ; jas_stream_memobj_t * m = ( jas_stream_memobj_t * ) obj ; <S2SV_StartBug> long newbufsize ; <S2SV_EndBug> long newpos ; assert ( buf ) ; assert ( cnt >= 0 ) ; JAS_DBGLOG ( 100 , ( \"mem_write(%p,<S2SV_blank>%p,<S2SV_blank>%d)\\\\n\" , obj , buf , cnt ) ) ; newpos = m -> pos_ + cnt ; if ( newpos > m -> bufsize_ && m -> growable_ ) { newbufsize = m -> bufsize_ ; while ( newbufsize < newpos ) { <S2SV_StartBug> newbufsize <<= 1 ; <S2SV_EndBug> assert ( newbufsize >= 0 ) ; } <S2SV_StartBug> JAS_DBGLOG ( 100 , ( \"mem_write<S2SV_blank>resizing<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%z\\\\n\" , m -> bufsize_ , <S2SV_EndBug> newbufsize ) ) ; JAS_DBGLOG ( 100 , ( \"mem_write<S2SV_blank>resizing<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%ul\\\\n\" , m -> bufsize_ , JAS_CAST ( unsigned long , newbufsize ) ) ) ; if ( mem_resize ( m , newbufsize ) ) { return - 1 ; } } <S2SV_StartBug> if ( m -> pos_ > m -> len_ ) { <S2SV_EndBug> n = JAS_MIN ( m -> pos_ , m -> bufsize_ ) - m -> len_ ; if ( n > 0 ) { memset ( & m -> buf_ [ m -> len_ ] , 0 , n ) ; m -> len_ += n ; } if ( m -> pos_ != m -> len_ ) { return 0 ; } } n = m -> bufsize_ - m -> pos_ ; ret = JAS_MIN ( n , cnt ) ; if ( ret > 0 ) { memcpy ( & m -> buf_ [ m -> pos_ ] , buf , ret ) ; m -> pos_ += ret ; } if ( m -> pos_ > m -> len_ ) { m -> len_ = m -> pos_ ; } assert ( ret == cnt ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cnt ) { size_t <S2SV_ModEnd> n ; int <S2SV_ModStart> ) obj ; size_t newbufsize ; size_t <S2SV_ModEnd> newpos ; assert <S2SV_ModStart> newpos ) { if ( ! jas_safe_size_mul ( newbufsize , 2 , & newbufsize ) ) { <S2SV_ModEnd> JAS_DBGLOG ( 100 <S2SV_ModStart> 100 , ( \"new<S2SV_blank>buffer<S2SV_blank>size<S2SV_blank>would<S2SV_blank>cause<S2SV_blank>overflow\\\\n\" ) ) ; <S2SV_ModEnd> return - 1 <S2SV_ModStart> ; } } JAS_DBGLOG ( 100 , ( \"mem_write<S2SV_blank>resizing<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%zu\\\\n\" , m -> bufsize_ , newbufsize ) ) ; assert ( newbufsize > 0 ) ; if ( mem_resize ( m , newbufsize ) ) { return - 1 ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-5375\n\n```\nCWE-310 static noinline int btrfs_mksubvol ( struct path * parent , char * name , int namelen , struct btrfs_root * snap_src , u64 * async_transid , bool readonly , struct btrfs_qgroup_inherit * * inherit ) { struct inode * dir = parent -> dentry -> d_inode ; struct dentry * dentry ; int error ; mutex_lock_nested ( & dir -> i_mutex , I_MUTEX_PARENT ) ; dentry = lookup_one_len ( name , parent -> dentry , namelen ) ; error = PTR_ERR ( dentry ) ; if ( IS_ERR ( dentry ) ) goto out_unlock ; error = - EEXIST ; if ( dentry -> d_inode ) goto out_dput ; error = btrfs_may_create ( dir , dentry ) ; if ( error ) goto out_dput ; <S2SV_StartBug> down_read ( & BTRFS_I ( dir ) -> root -> fs_info -> subvol_sem ) ; <S2SV_EndBug> if ( btrfs_root_refs ( & BTRFS_I ( dir ) -> root -> root_item ) == 0 ) goto out_up_read ; if ( snap_src ) { error = create_snapshot ( snap_src , dentry , name , namelen , async_transid , readonly , inherit ) ; } else { error = create_subvol ( BTRFS_I ( dir ) -> root , dentry , name , namelen , async_transid , inherit ) ; } if ( ! error ) fsnotify_mkdir ( dir , dentry ) ; out_up_read : up_read ( & BTRFS_I ( dir ) -> root -> fs_info -> subvol_sem ) ; out_dput : dput ( dentry ) ; out_unlock : mutex_unlock ( & dir -> i_mutex ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> goto out_dput ; error = btrfs_check_dir_item_collision ( BTRFS_I ( dir ) -> root , dir -> i_ino , name , namelen ) ; if ( error ) goto out_dput ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9995\n\n```\nCWE-119 static int decompress_i ( AVCodecContext * avctx , uint32_t * dst , int linesize ) { SCPRContext * s = avctx -> priv_data ; GetByteContext * gb = & s -> gb ; int cx = 0 , cx1 = 0 , k = 0 , clr = 0 ; int run , r , g , b , off , y = 0 , x = 0 , z , ret ; unsigned backstep = linesize - avctx -> width ; const int cxshift = s -> cxshift ; unsigned lx , ly , ptype ; reinit_tables ( s ) ; bytestream2_skip ( gb , 2 ) ; init_rangecoder ( & s -> rc , gb ) ; while ( k < avctx -> width + 1 ) { ret = decode_unit ( s , & s -> pixel_model [ 0 ] [ cx + cx1 ] , 400 , & r ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = r >> cxshift ; ret = decode_unit ( s , & s -> pixel_model [ 1 ] [ cx + cx1 ] , 400 , & g ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = g >> cxshift ; ret = decode_unit ( s , & s -> pixel_model [ 2 ] [ cx + cx1 ] , 400 , & b ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = b >> cxshift ; ret = decode_value ( s , s -> run_model [ 0 ] , 256 , 400 , & run ) ; if ( ret < 0 ) return ret ; clr = ( b << 16 ) + ( g << 8 ) + r ; k += run ; while ( run -- > 0 ) { <S2SV_StartBug> dst [ y * linesize + x ] = clr ; <S2SV_EndBug> lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } } off = - linesize - 1 ; ptype = 0 ; while ( x < avctx -> width && y < avctx -> height ) { ret = decode_value ( s , s -> op_model [ ptype ] , 6 , 1000 , & ptype ) ; if ( ret < 0 ) return ret ; if ( ptype == 0 ) { ret = decode_unit ( s , & s -> pixel_model [ 0 ] [ cx + cx1 ] , 400 , & r ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = r >> cxshift ; ret = decode_unit ( s , & s -> pixel_model [ 1 ] [ cx + cx1 ] , 400 , & g ) ; if ( ret < 0 ) return ret ; cx1 = ( cx << 6 ) & 0xFC0 ; cx = g >> cxshift ; ret = decode_unit ( s , & s -> pixel_model [ 2 ] [ cx + cx1 ] , 400 , & b ) ; if ( ret < 0 ) return ret ; clr = ( b << 16 ) + ( g << 8 ) + r ; } if ( ptype > 5 ) return AVERROR_INVALIDDATA ; ret = decode_value ( s , s -> run_model [ ptype ] , 256 , 400 , & run ) ; if ( ret < 0 ) return ret ; switch ( ptype ) { case 0 : while ( run -- > 0 ) { if ( y >= avctx -> height ) return AVERROR_INVALIDDATA ; dst [ y * linesize + x ] = clr ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } break ; case 1 : while ( run -- > 0 ) { if ( y >= avctx -> height ) return AVERROR_INVALIDDATA ; dst [ y * linesize + x ] = dst [ ly * linesize + lx ] ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } clr = dst [ ly * linesize + lx ] ; break ; case 2 : while ( run -- > 0 ) { if ( y < 1 || y >= avctx -> height ) return AVERROR_INVALIDDATA ; clr = dst [ y * linesize + x + off + 1 ] ; dst [ y * linesize + x ] = clr ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } break ; case 4 : while ( run -- > 0 ) { uint8_t * odst = ( uint8_t * ) dst ; if ( y < 1 || y >= avctx -> height || ( y == 1 && x == 0 ) ) return AVERROR_INVALIDDATA ; if ( x == 0 ) { z = backstep ; } else { z = 0 ; } r = odst [ ( ly * linesize + lx ) * 4 ] + odst [ ( ( y * linesize + x ) + off - z ) * 4 + 4 ] - odst [ ( ( y * linesize + x ) + off - z ) * 4 ] ; g = odst [ ( ly * linesize + lx ) * 4 + 1 ] + odst [ ( ( y * linesize + x ) + off - z ) * 4 + 5 ] - odst [ ( ( y * linesize + x ) + off - z ) * 4 + 1 ] ; b = odst [ ( ly * linesize + lx ) * 4 + 2 ] + odst [ ( ( y * linesize + x ) + off - z ) * 4 + 6 ] - odst [ ( ( y * linesize + x ) + off - z ) * 4 + 2 ] ; clr = ( ( b & 0xFF ) << 16 ) + ( ( g & 0xFF ) << 8 ) + ( r & 0xFF ) ; dst [ y * linesize + x ] = clr ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } break ; case 5 : while ( run -- > 0 ) { if ( y < 1 || y >= avctx -> height || ( y == 1 && x == 0 ) ) return AVERROR_INVALIDDATA ; if ( x == 0 ) { z = backstep ; } else { z = 0 ; } clr = dst [ y * linesize + x + off - z ] ; dst [ y * linesize + x ] = clr ; lx = x ; ly = y ; x ++ ; if ( x >= avctx -> width ) { x = 0 ; y ++ ; } } break ; } if ( avctx -> bits_per_coded_sample == 16 ) { cx1 = ( clr & 0x3F00 ) >> 2 ; cx = ( clr & 0xFFFFFF ) >> 16 ; } else { cx1 = ( clr & 0xFC00 ) >> 4 ; cx = ( clr & 0xFFFFFF ) >> 18 ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { if ( y >= avctx -> height ) return AVERROR_INVALIDDATA ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 <S2SV_StartBug> int bind_ports ( void ) { <S2SV_EndBug> SERVICE_OPTIONS * opt ; int listening_section ; # ifdef USE_LIBWRAP libwrap_init ( ) ; # endif s_poll_init ( fds , 1 ) ; for ( opt = service_options . next ; opt ; opt = opt -> next ) { unsigned i ; for ( i = 0 ; i < opt -> local_addr . num ; ++ i ) opt -> local_fd [ i ] = INVALID_SOCKET ; } listening_section = 0 ; for ( opt = service_options . next ; opt ; opt = opt -> next ) { opt -> bound_ports = 0 ; if ( opt -> local_addr . num ) { unsigned i ; s_log ( LOG_DEBUG , \"Binding<S2SV_blank>service<S2SV_blank>[%s]\" , opt -> servname ) ; for ( i = 0 ; i < opt -> local_addr . num ; ++ i ) { SOCKET fd ; fd = bind_port ( opt , listening_section , i ) ; opt -> local_fd [ i ] = fd ; if ( fd != INVALID_SOCKET ) { s_poll_add ( fds , fd , 1 , 0 ) ; ++ opt -> bound_ports ; } } if ( ! opt -> bound_ports ) { s_log ( LOG_ERR , \"Binding<S2SV_blank>service<S2SV_blank>[%s]<S2SV_blank>failed\" , opt -> servname ) ; return 1 ; } ++ listening_section ; } else if ( opt -> exec_name && opt -> connect_addr . names ) { s_log ( LOG_DEBUG , \"Skipped<S2SV_blank>exec+connect<S2SV_blank>service<S2SV_blank>[%s]\" , opt -> servname ) ; # ifndef OPENSSL_NO_TLSEXT } else if ( ! opt -> option . client && opt -> sni ) { s_log ( LOG_DEBUG , \"Skipped<S2SV_blank>SNI<S2SV_blank>slave<S2SV_blank>service<S2SV_blank>[%s]\" , opt -> servname ) ; # endif } else { s_log ( LOG_ERR , \"Invalid<S2SV_blank>service<S2SV_blank>[%s]\" , opt -> servname ) ; return 1 ; } } if ( listening_section < systemd_fds ) { s_log ( LOG_ERR , \"Too<S2SV_blank>many<S2SV_blank>listening<S2SV_blank>file<S2SV_blank>descriptors<S2SV_blank>received<S2SV_blank>from<S2SV_blank>systemd,<S2SV_blank>got<S2SV_blank>%d\" , systemd_fds ) ; return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> NOEXPORT\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 void sec_decrypt ( uint8 * data , int length ) <S2SV_StartBug> { <S2SV_EndBug> if ( g_sec_decrypt_use_count == 4096 ) { sec_update ( g_sec_decrypt_key , g_sec_decrypt_update_key ) ; rdssl_rc4_set_key ( & g_rc4_decrypt_key , g_sec_decrypt_key , g_rc4_key_len ) ; g_sec_decrypt_use_count = 0 ; } rdssl_rc4_crypt ( & g_rc4_decrypt_key , data , data , length ) ; g_sec_decrypt_use_count ++ ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> length ) { if ( length <= 0 ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6838\n\n```\nCWE-190 bool copyaudiodata ( AFfilehandle infile , AFfilehandle outfile , int trackid ) { int frameSize = afGetVirtualFrameSize ( infile , trackid , 1 ) ; <S2SV_StartBug> const int kBufferFrameCount = 65536 ; <S2SV_EndBug> <S2SV_StartBug> void * buffer = malloc ( kBufferFrameCount * frameSize ) ; <S2SV_EndBug> AFframecount totalFrames = afGetFrameCount ( infile , AF_DEFAULT_TRACK ) ; AFframecount totalFramesWritten = 0 ; bool success = true ; while ( totalFramesWritten < totalFrames ) { AFframecount framesToRead = totalFrames - totalFramesWritten ; if ( framesToRead > kBufferFrameCount ) framesToRead = kBufferFrameCount ; AFframecount framesRead = afReadFrames ( infile , trackid , buffer , framesToRead ) ; if ( framesRead < framesToRead ) { fprintf ( stderr , \"Bad<S2SV_blank>read<S2SV_blank>of<S2SV_blank>audio<S2SV_blank>track<S2SV_blank>data.\\\\n\" ) ; success = false ; break ; } AFframecount framesWritten = afWriteFrames ( outfile , trackid , buffer , framesRead ) ; if ( framesWritten < framesRead ) { fprintf ( stderr , \"Bad<S2SV_blank>write<S2SV_blank>of<S2SV_blank>audio<S2SV_blank>track<S2SV_blank>data.\\\\n\" ) ; success = false ; break ; } totalFramesWritten += framesWritten ; } free ( buffer ) ; return success ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; <S2SV_ModEnd> int kBufferFrameCount = <S2SV_ModStart> kBufferFrameCount = 65536 ; int bufferSize ; while ( multiplyCheckOverflow ( kBufferFrameCount , frameSize , & bufferSize ) ) kBufferFrameCount /= 2 <S2SV_ModStart> = malloc ( bufferSize <S2SV_ModEnd> ) ; AFframecount\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 struct scm_fp_list * scm_fp_dup ( struct scm_fp_list * fpl ) { struct scm_fp_list * new_fpl ; int i ; if ( ! fpl ) return NULL ; new_fpl = kmemdup ( fpl , offsetof ( struct scm_fp_list , fp [ fpl -> count ] ) , GFP_KERNEL ) ; if ( new_fpl ) { for ( i = 0 ; i < fpl -> count ; i ++ ) get_file ( fpl -> fp [ i ] ) ; new_fpl -> max = new_fpl -> count ; <S2SV_StartBug> } <S2SV_EndBug> return new_fpl ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> count ; new_fpl -> user = get_uid ( fpl -> user ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vpx_scale_frame ( YV12_BUFFER_CONFIG * src , YV12_BUFFER_CONFIG * dst , unsigned char * temp_area , unsigned char temp_height , unsigned int hscale , unsigned int hratio , unsigned int vscale , unsigned int vratio , unsigned int interlaced ) { int i ; int dw = ( hscale - 1 + src -> y_width * hratio ) / hscale ; int dh = ( vscale - 1 + src -> y_height * vratio ) / vscale ; Scale2D ( ( unsigned char * ) src -> y_buffer , src -> y_stride , src -> y_width , src -> y_height , ( unsigned char * ) dst -> y_buffer , dst -> y_stride , dw , dh , temp_area , temp_height , hscale , hratio , vscale , vratio , interlaced ) ; if ( dw < ( int ) dst -> y_width ) for ( i = 0 ; i < dh ; i ++ ) <S2SV_StartBug> vpx_memset ( dst -> y_buffer + i * dst -> y_stride + dw - 1 , dst -> y_buffer [ i * dst -> y_stride + dw - 2 ] , dst -> y_width - dw + 1 ) ; <S2SV_EndBug> if ( dh < ( int ) dst -> y_height ) for ( i = dh - 1 ; i < ( int ) dst -> y_height ; i ++ ) <S2SV_StartBug> vpx_memcpy ( dst -> y_buffer + i * dst -> y_stride , dst -> y_buffer + ( dh - 2 ) * dst -> y_stride , dst -> y_width + 1 ) ; <S2SV_EndBug> Scale2D ( ( unsigned char * ) src -> u_buffer , src -> uv_stride , src -> uv_width , src -> uv_height , ( unsigned char * ) dst -> u_buffer , dst -> uv_stride , dw / 2 , dh / 2 , temp_area , temp_height , hscale , hratio , vscale , vratio , interlaced ) ; if ( dw / 2 < ( int ) dst -> uv_width ) for ( i = 0 ; i < dst -> uv_height ; i ++ ) <S2SV_StartBug> vpx_memset ( dst -> u_buffer + i * dst -> uv_stride + dw / 2 - 1 , dst -> u_buffer [ i * dst -> uv_stride + dw / 2 - 2 ] , dst -> uv_width - dw / 2 + 1 ) ; <S2SV_EndBug> if ( dh / 2 < ( int ) dst -> uv_height ) for ( i = dh / 2 - 1 ; i < ( int ) dst -> y_height / 2 ; i ++ ) <S2SV_StartBug> vpx_memcpy ( dst -> u_buffer + i * dst -> uv_stride , dst -> u_buffer + ( dh / 2 - 2 ) * dst -> uv_stride , dst -> uv_width ) ; <S2SV_EndBug> Scale2D ( ( unsigned char * ) src -> v_buffer , src -> uv_stride , src -> uv_width , src -> uv_height , ( unsigned char * ) dst -> v_buffer , dst -> uv_stride , dw / 2 , dh / 2 , temp_area , temp_height , hscale , hratio , vscale , vratio , interlaced ) ; if ( dw / 2 < ( int ) dst -> uv_width ) for ( i = 0 ; i < dst -> uv_height ; i ++ ) <S2SV_StartBug> vpx_memset ( dst -> v_buffer + i * dst -> uv_stride + dw / 2 - 1 , dst -> v_buffer [ i * dst -> uv_stride + dw / 2 - 2 ] , dst -> uv_width - dw / 2 + 1 ) ; <S2SV_EndBug> if ( dh / 2 < ( int ) dst -> uv_height ) for ( i = dh / 2 - 1 ; i < ( int ) dst -> y_height / 2 ; i ++ ) <S2SV_StartBug> vpx_memcpy ( dst -> v_buffer + i * dst -> uv_stride , dst -> v_buffer + ( dh / 2 - 2 ) * dst -> uv_stride , dst -> uv_width ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> i ++ ) memset <S2SV_ModEnd> ( dst -> <S2SV_ModStart> i ++ ) memcpy <S2SV_ModEnd> ( dst -> <S2SV_ModStart> i ++ ) memset <S2SV_ModEnd> ( dst -> <S2SV_ModStart> i ++ ) memcpy <S2SV_ModEnd> ( dst -> <S2SV_ModStart> i ++ ) memset <S2SV_ModEnd> ( dst -> <S2SV_ModStart> i ++ ) memcpy <S2SV_ModEnd> ( dst ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18248\n\n```\nCWE-20 static cupsd_job_t * add_job ( cupsd_client_t * con , cupsd_printer_t * printer , mime_type_t * filetype ) { http_status_t status ; ipp_attribute_t * attr , * auth_info ; const char * mandatory ; const char * val ; int priority ; cupsd_job_t * job ; char job_uri [ HTTP_MAX_URI ] ; int kbytes ; int i ; int lowerpagerange ; int exact ; ipp_attribute_t * media_col , * media_margin ; ipp_t * unsup_col ; static const char * const readonly [ ] = { \"date-time-at-completed\" , \"date-time-at-creation\" , \"date-time-at-processing\" , \"job-detailed-status-messages\" , \"job-document-access-errors\" , \"job-id\" , \"job-impressions-completed\" , \"job-k-octets-completed\" , \"job-media-sheets-completed\" , \"job-pages-completed\" , \"job-printer-up-time\" , \"job-printer-uri\" , \"job-state\" , \"job-state-message\" , \"job-state-reasons\" , \"job-uri\" , \"number-of-documents\" , \"number-of-intervening-jobs\" , \"output-device-assigned\" , \"time-at-completed\" , \"time-at-creation\" , \"time-at-processing\" } ; cupsdLogMessage ( CUPSD_LOG_DEBUG2 , \"add_job(%p[%d],<S2SV_blank>%p(%s),<S2SV_blank>%p(%s/%s))\" , con , con -> number , printer , printer -> name , filetype , filetype ? filetype -> super : \"none\" , filetype ? filetype -> type : \"none\" ) ; if ( ! printer -> shared && _cups_strcasecmp ( con -> http -> hostname , \"localhost\" ) && _cups_strcasecmp ( con -> http -> hostname , ServerName ) ) { send_ipp_status ( con , IPP_NOT_AUTHORIZED , _ ( \"The<S2SV_blank>printer<S2SV_blank>or<S2SV_blank>class<S2SV_blank>is<S2SV_blank>not<S2SV_blank>shared.\" ) ) ; return ( NULL ) ; } auth_info = ippFindAttribute ( con -> request , \"auth-info\" , IPP_TAG_TEXT ) ; if ( ( status = cupsdCheckPolicy ( printer -> op_policy_ptr , con , NULL ) ) != HTTP_OK ) { send_http_error ( con , status , printer ) ; return ( NULL ) ; } else if ( printer -> num_auth_info_required == 1 && ! strcmp ( printer -> auth_info_required [ 0 ] , \"negotiate\" ) && ! con -> username [ 0 ] ) { send_http_error ( con , HTTP_UNAUTHORIZED , printer ) ; return ( NULL ) ; } # ifdef HAVE_SSL else if ( auth_info && ! con -> http -> tls && ! httpAddrLocalhost ( con -> http -> hostaddr ) ) { send_http_error ( con , HTTP_UPGRADE_REQUIRED , printer ) ; return ( NULL ) ; } # endif if ( ! printer -> accepting ) { send_ipp_status ( con , IPP_NOT_ACCEPTING , _ ( \"Destination<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>is<S2SV_blank>not<S2SV_blank>accepting<S2SV_blank>jobs.\" ) , printer -> name ) ; return ( NULL ) ; } for ( i = 0 ; i < ( int ) ( sizeof ( readonly ) / sizeof ( readonly [ 0 ] ) ) ; i ++ ) { if ( ( attr = ippFindAttribute ( con -> request , readonly [ i ] , IPP_TAG_ZERO ) ) != NULL ) { ippDeleteAttribute ( con -> request , attr ) ; if ( StrictConformance ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"The<S2SV_blank>\\'%s\\'<S2SV_blank>Job<S2SV_blank>Status<S2SV_blank>attribute<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>supplied<S2SV_blank>in<S2SV_blank>a<S2SV_blank>job<S2SV_blank>creation<S2SV_blank>request.\" ) , readonly [ i ] ) ; return ( NULL ) ; } cupsdLogMessage ( CUPSD_LOG_INFO , \"Unexpected<S2SV_blank>\\'%s\\'<S2SV_blank>Job<S2SV_blank>Status<S2SV_blank>attribute<S2SV_blank>in<S2SV_blank>a<S2SV_blank>job<S2SV_blank>creation<S2SV_blank>request.\" , readonly [ i ] ) ; } } if ( printer -> pc ) { for ( mandatory = ( char * ) cupsArrayFirst ( printer -> pc -> mandatory ) ; mandatory ; mandatory = ( char * ) cupsArrayNext ( printer -> pc -> mandatory ) ) { if ( ! ippFindAttribute ( con -> request , mandatory , IPP_TAG_ZERO ) ) { send_ipp_status ( con , IPP_CONFLICT , _ ( \"The<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>attribute<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>print<S2SV_blank>jobs.\" ) , mandatory ) ; return ( NULL ) ; } } } if ( filetype && printer -> filetypes && ! cupsArrayFind ( printer -> filetypes , filetype ) ) { char mimetype [ MIME_MAX_SUPER + MIME_MAX_TYPE + 2 ] ; snprintf ( mimetype , sizeof ( mimetype ) , \"%s/%s\" , filetype -> super , filetype -> type ) ; send_ipp_status ( con , IPP_DOCUMENT_FORMAT , _ ( \"Unsupported<S2SV_blank>format<S2SV_blank>\\\\\"%s\\\\\".\" ) , mimetype ) ; ippAddString ( con -> response , IPP_TAG_UNSUPPORTED_GROUP , IPP_TAG_MIMETYPE , \"document-format\" , NULL , mimetype ) ; return ( NULL ) ; } if ( ( attr = ippFindAttribute ( con -> request , \"copies\" , IPP_TAG_INTEGER ) ) != NULL ) { if ( attr -> values [ 0 ] . integer < 1 || attr -> values [ 0 ] . integer > MaxCopies ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>copies<S2SV_blank>value<S2SV_blank>%d.\" ) , attr -> values [ 0 ] . integer ) ; ippAddInteger ( con -> response , IPP_TAG_UNSUPPORTED_GROUP , IPP_TAG_INTEGER , \"copies\" , attr -> values [ 0 ] . integer ) ; return ( NULL ) ; } } if ( ( attr = ippFindAttribute ( con -> request , \"job-sheets\" , IPP_TAG_ZERO ) ) != NULL ) { if ( attr -> value_tag != IPP_TAG_KEYWORD && attr -> value_tag != IPP_TAG_NAME ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"Bad<S2SV_blank>job-sheets<S2SV_blank>value<S2SV_blank>type.\" ) ) ; return ( NULL ) ; } if ( attr -> num_values > 2 ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"Too<S2SV_blank>many<S2SV_blank>job-sheets<S2SV_blank>values<S2SV_blank>(%d<S2SV_blank>><S2SV_blank>2).\" ) , attr -> num_values ) ; return ( NULL ) ; } for ( i = 0 ; i < attr -> num_values ; i ++ ) if ( strcmp ( attr -> values [ i ] . string . text , \"none\" ) && ! cupsdFindBanner ( attr -> values [ i ] . string . text ) ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"Bad<S2SV_blank>job-sheets<S2SV_blank>value<S2SV_blank>\\\\\"%s\\\\\".\" ) , attr -> values [ i ] . string . text ) ; return ( NULL ) ; } } if ( ( attr = ippFindAttribute ( con -> request , \"number-up\" , IPP_TAG_INTEGER ) ) != NULL ) { if ( attr -> values [ 0 ] . integer != 1 && attr -> values [ 0 ] . integer != 2 && attr -> values [ 0 ] . integer != 4 && attr -> values [ 0 ] . integer != 6 && attr -> values [ 0 ] . integer != 9 && attr -> values [ 0 ] . integer != 16 ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>number-up<S2SV_blank>value<S2SV_blank>%d.\" ) , attr -> values [ 0 ] . integer ) ; ippAddInteger ( con -> response , IPP_TAG_UNSUPPORTED_GROUP , IPP_TAG_INTEGER , \"number-up\" , attr -> values [ 0 ] . integer ) ; return ( NULL ) ; } } if ( ( attr = ippFindAttribute ( con -> request , \"page-ranges\" , IPP_TAG_RANGE ) ) != NULL ) { for ( i = 0 , lowerpagerange = 1 ; i < attr -> num_values ; i ++ ) { if ( attr -> values [ i ] . range . lower < lowerpagerange || attr -> values [ i ] . range . lower > attr -> values [ i ] . range . upper ) { send_ipp_status ( con , IPP_BAD_REQUEST , _ ( \"Bad<S2SV_blank>page-ranges<S2SV_blank>values<S2SV_blank>%d-%d.\" ) , attr -> values [ i ] . range . lower , attr -> values [ i ] . range . upper ) ; return ( NULL ) ; } lowerpagerange = attr -> values [ i ] . range . upper + 1 ; } } if ( ! ippFindAttribute ( con -> request , \"PageRegion\" , IPP_TAG_ZERO ) && ! ippFindAttribute ( con -> request , \"PageSize\" , IPP_TAG_ZERO ) && _ppdCacheGetPageSize ( printer -> pc , con -> request , NULL , & exact ) ) { if ( ! exact && ( media_col = ippFindAttribute ( con -> request , \"media-col\" , IPP_TAG_BEGIN_COLLECTION ) ) != NULL ) { send_ipp_status ( con , IPP_OK_SUBST , _ ( \"Unsupported<S2SV_blank>margins.\" ) ) ; unsup_col = ippNew ( ) ; if ( ( media_margin = ippFindAttribute ( media_col -> values [ 0 ] . collection , \"media-bottom-margin\" , IPP_TAG_INTEGER ) ) != NULL ) ippAddInteger ( unsup_col , IPP_TAG_ZERO , IPP_TAG_INTEGER , \"media-bottom-margin\" , media_margin -> values [ 0 ] . integer ) ; if ( ( media_margin = ippFindAttribute ( media_col -> values [ 0 ] . collection , \"media-left-margin\" , IPP_TAG_INTEGER ) ) != NULL ) ippAddInteger ( unsup_col , IPP_TAG_ZERO , IPP_TAG_INTEGER , \"media-left-margin\" , media_margin -> values [ 0 ] . integer ) ; if ( ( media_margin = ippFindAttribute ( media_col -> values [ 0 ] . collection , \"media-right-margin\" , IPP_TAG_INTEGER ) ) != NULL ) ippAddInteger ( unsup_col , IPP_TAG_ZERO , IPP_TAG_INTEGER , \"media-right-margin\" , media_margin -> values [ 0 ] . integer ) ; if ( ( media_margin = ippFindAttribute ( media_col -> values [ 0 ] . collection , \"media-top-margin\" , IPP_TAG_INTEGER ) ) != NULL ) ippAddInteger ( unsup_col , IPP_TAG_ZERO , IPP_TAG_INTEGER , \"media-top-margin\" , media_margin -> values [ 0 ] . integer ) ; ippAddCollection ( con -> response , IPP_TAG_UNSUPPORTED_GROUP , \"media-col\" , unsup_col ) ; ippDelete ( unsup_col ) ; } } if ( MaxJobs && cupsArrayCount ( Jobs ) >= MaxJobs ) cupsdCleanJobs ( ) ; if ( MaxJobs && cupsArrayCount ( Jobs ) >= MaxJobs ) { send_ipp_status ( con , IPP_NOT_POSSIBLE , _ ( \"Too<S2SV_blank>many<S2SV_blank>active<S2SV_blank>jobs.\" ) ) ; return ( NULL ) ; } if ( ( i = check_quotas ( con , printer ) ) < 0 ) { send_ipp_status ( con , IPP_NOT_POSSIBLE , _ ( \"Quota<S2SV_blank>limit<S2SV_blank>reached.\" ) ) ; return ( NULL ) ; } else if ( i == 0 ) { send_ipp_status ( con , IPP_NOT_AUTHORIZED , _ ( \"Not<S2SV_blank>allowed<S2SV_blank>to<S2SV_blank>print.\" ) ) ; return ( NULL ) ; } if ( ( attr = ippFindAttribute ( con -> request , \"job-priority\" , IPP_TAG_INTEGER ) ) != NULL ) priority = attr -> values [ 0 ] . integer ; else { if ( ( val = cupsGetOption ( \"job-priority\" , printer -> num_options , printer -> options ) ) != NULL ) priority = atoi ( val ) ; else priority = 50 ; ippAddInteger ( con -> request , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-priority\" , priority ) ; } if ( ( attr = ippFindAttribute ( con -> request , \"job-name\" , IPP_TAG_ZERO ) ) == NULL ) ippAddString ( con -> request , IPP_TAG_JOB , IPP_TAG_NAME , \"job-name\" , NULL , \"Untitled\" ) ; else if ( ( attr -> value_tag != IPP_TAG_NAME && attr -> value_tag != IPP_TAG_NAMELANG ) || attr -> num_values != 1 ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>job-name<S2SV_blank>value:<S2SV_blank>Wrong<S2SV_blank>type<S2SV_blank>or<S2SV_blank>count.\" ) ) ; if ( ( attr = ippCopyAttribute ( con -> response , attr , 0 ) ) != NULL ) attr -> group_tag = IPP_TAG_UNSUPPORTED_GROUP ; return ( NULL ) ; } else if ( ! ippValidateAttribute ( attr ) ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>job-name<S2SV_blank>value:<S2SV_blank>%s\" ) , cupsLastErrorString ( ) ) ; if ( ( attr = ippCopyAttribute ( con -> response , attr , 0 ) ) != NULL ) attr -> group_tag = IPP_TAG_UNSUPPORTED_GROUP ; return ( NULL ) ; } <S2SV_StartBug> if ( ( job = cupsdAddJob ( priority , printer -> name ) ) == NULL ) <S2SV_EndBug> { send_ipp_status ( con , IPP_INTERNAL_ERROR , _ ( \"Unable<S2SV_blank>to<S2SV_blank>add<S2SV_blank>job<S2SV_blank>for<S2SV_blank>destination<S2SV_blank>\\\\\"%s\\\\\".\" ) , printer -> name ) ; return ( NULL ) ; } job -> dtype = printer -> type & ( CUPS_PRINTER_CLASS | CUPS_PRINTER_REMOTE ) ; job -> attrs = con -> request ; job -> dirty = 1 ; con -> request = ippNewRequest ( job -> attrs -> request . op . operation_id ) ; cupsdMarkDirty ( CUPSD_DIRTY_JOBS ) ; add_job_uuid ( job ) ; <S2SV_StartBug> apply_printer_defaults ( printer , job ) ; <S2SV_EndBug> attr = ippFindAttribute ( job -> attrs , \"requesting-user-name\" , IPP_TAG_NAME ) ; if ( con -> username [ 0 ] ) { cupsdSetString ( & job -> username , con -> username ) ; if ( attr ) ippSetString ( job -> attrs , & attr , 0 , con -> username ) ; } else if ( attr ) { cupsdLogMessage ( CUPSD_LOG_DEBUG , \"add_job:<S2SV_blank>requesting-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text ) ; cupsdSetString ( & job -> username , attr -> values [ 0 ] . string . text ) ; } else cupsdSetString ( & job -> username , \"anonymous\" ) ; if ( ! attr ) ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NAME , \"job-originating-user-name\" , NULL , job -> username ) ; else { ippSetGroupTag ( job -> attrs , & attr , IPP_TAG_JOB ) ; ippSetName ( job -> attrs , & attr , \"job-originating-user-name\" ) ; } if ( con -> username [ 0 ] || auth_info ) { save_auth_info ( con , job , auth_info ) ; if ( auth_info ) ippDeleteAttribute ( job -> attrs , auth_info ) ; } if ( ( attr = ippFindAttribute ( con -> request , \"job-name\" , IPP_TAG_NAME ) ) != NULL ) cupsdSetString ( & ( job -> name ) , attr -> values [ 0 ] . string . text ) ; if ( ( attr = ippFindAttribute ( job -> attrs , \"job-originating-host-name\" , IPP_TAG_ZERO ) ) != NULL ) { if ( attr -> value_tag != IPP_TAG_NAME || attr -> num_values != 1 || strcmp ( con -> http -> hostname , \"localhost\" ) ) { ippDeleteAttribute ( job -> attrs , attr ) ; ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NAME , \"job-originating-host-name\" , NULL , con -> http -> hostname ) ; } else ippSetGroupTag ( job -> attrs , & attr , IPP_TAG_JOB ) ; } else { ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NAME , \"job-originating-host-name\" , NULL , con -> http -> hostname ) ; } ippAddOutOfBand ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NOVALUE , \"date-time-at-completed\" ) ; ippAddDate ( job -> attrs , IPP_TAG_JOB , \"date-time-at-creation\" , ippTimeToDate ( time ( NULL ) ) ) ; ippAddOutOfBand ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NOVALUE , \"date-time-at-processing\" ) ; ippAddOutOfBand ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NOVALUE , \"time-at-completed\" ) ; ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"time-at-creation\" , time ( NULL ) ) ; ippAddOutOfBand ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NOVALUE , \"time-at-processing\" ) ; ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-id\" , job -> id ) ; job -> state = ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_ENUM , \"job-state\" , IPP_JOB_STOPPED ) ; job -> state_value = ( ipp_jstate_t ) job -> state -> values [ 0 ] . integer ; job -> reasons = ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_KEYWORD , \"job-state-reasons\" , NULL , \"job-incoming\" ) ; job -> impressions = ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-impressions-completed\" , 0 ) ; job -> sheets = ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-media-sheets-completed\" , 0 ) ; ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_URI , \"job-printer-uri\" , NULL , printer -> uri ) ; if ( ( attr = ippFindAttribute ( job -> attrs , \"job-k-octets\" , IPP_TAG_INTEGER ) ) != NULL ) attr -> values [ 0 ] . integer = 0 ; else ippAddInteger ( job -> attrs , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-k-octets\" , 0 ) ; if ( ( attr = ippFindAttribute ( job -> attrs , \"job-hold-until\" , IPP_TAG_KEYWORD ) ) == NULL ) attr = ippFindAttribute ( job -> attrs , \"job-hold-until\" , IPP_TAG_NAME ) ; if ( ! attr ) { if ( ( val = cupsGetOption ( \"job-hold-until\" , printer -> num_options , printer -> options ) ) == NULL ) val = \"no-hold\" ; attr = ippAddString ( job -> attrs , IPP_TAG_JOB , IPP_TAG_KEYWORD , \"job-hold-until\" , NULL , val ) ; } if ( printer -> holding_new_jobs ) { if ( attr && strcmp ( attr -> values [ 0 ] . string . text , \"no-hold\" ) ) cupsdSetJobHoldUntil ( job , ippGetString ( attr , 0 , NULL ) , 0 ) ; else cupsdSetJobHoldUntil ( job , \"indefinite\" , 0 ) ; job -> state -> values [ 0 ] . integer = IPP_JOB_HELD ; job -> state_value = IPP_JOB_HELD ; ippSetString ( job -> attrs , & job -> reasons , 0 , \"job-held-on-create\" ) ; } else if ( attr && strcmp ( attr -> values [ 0 ] . string . text , \"no-hold\" ) ) { cupsdSetJobHoldUntil ( job , attr -> values [ 0 ] . string . text , 0 ) ; job -> state -> values [ 0 ] . integer = IPP_JOB_HELD ; job -> state_value = IPP_JOB_HELD ; ippSetString ( job -> attrs , & job -> reasons , 0 , \"job-hold-until-specified\" ) ; } else if ( job -> attrs -> request . op . operation_id == IPP_CREATE_JOB ) { job -> hold_until = time ( NULL ) + MultipleOperationTimeout ; job -> state -> values [ 0 ] . integer = IPP_JOB_HELD ; job -> state_value = IPP_JOB_HELD ; } else { job -> state -> values [ 0 ] . integer = IPP_JOB_PENDING ; job -> state_value = IPP_JOB_PENDING ; ippSetString ( job -> attrs , & job -> reasons , 0 , \"none\" ) ; } if ( ! ( printer -> type & CUPS_PRINTER_REMOTE ) || Classification ) { if ( ( attr = ippFindAttribute ( job -> attrs , \"job-sheets\" , IPP_TAG_ZERO ) ) == NULL ) { cupsdLogMessage ( CUPSD_LOG_DEBUG , \"Adding<S2SV_blank>default<S2SV_blank>job-sheets<S2SV_blank>values<S2SV_blank>\\\\\"%s,%s\\\\\"...\" , printer -> job_sheets [ 0 ] , printer -> job_sheets [ 1 ] ) ; attr = ippAddStrings ( job -> attrs , IPP_TAG_JOB , IPP_TAG_NAME , \"job-sheets\" , 2 , NULL , NULL ) ; ippSetString ( job -> attrs , & attr , 0 , printer -> job_sheets [ 0 ] ) ; ippSetString ( job -> attrs , & attr , 1 , printer -> job_sheets [ 1 ] ) ; } job -> job_sheets = attr ; if ( Classification ) { cupsdLogMessage ( CUPSD_LOG_INFO , \"Classification=\\\\\"%s\\\\\",<S2SV_blank>ClassifyOverride=%d\" , Classification ? Classification : \"(null)\" , ClassifyOverride ) ; if ( ClassifyOverride ) { if ( ! strcmp ( attr -> values [ 0 ] . string . text , \"none\" ) && ( attr -> num_values == 1 || ! strcmp ( attr -> values [ 1 ] . string . text , \"none\" ) ) ) { ippSetString ( job -> attrs , & attr , 0 , Classification ) ; cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>FORCED<S2SV_blank>\" \"job-sheets=\\\\\"%s,none\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , Classification , job -> username ) ; } else if ( attr -> num_values == 2 && strcmp ( attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text ) && strcmp ( attr -> values [ 0 ] . string . text , \"none\" ) && strcmp ( attr -> values [ 1 ] . string . text , \"none\" ) ) { ippSetString ( job -> attrs , & attr , 1 , attr -> values [ 0 ] . string . text ) ; cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>FORCED<S2SV_blank>\" \"job-sheets=\\\\\"%s,%s\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text , job -> username ) ; } else if ( strcmp ( attr -> values [ 0 ] . string . text , Classification ) && strcmp ( attr -> values [ 0 ] . string . text , \"none\" ) && ( attr -> num_values == 1 || ( strcmp ( attr -> values [ 1 ] . string . text , Classification ) && strcmp ( attr -> values [ 1 ] . string . text , \"none\" ) ) ) ) { if ( attr -> num_values == 1 ) cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>OVERRIDDEN<S2SV_blank>\" \"job-sheets=\\\\\"%s\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text , job -> username ) ; else cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>OVERRIDDEN<S2SV_blank>\" \"job-sheets=\\\\\"%s,%s\\\\\",fffff<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text , job -> username ) ; } } else if ( strcmp ( attr -> values [ 0 ] . string . text , Classification ) && ( attr -> num_values == 1 || strcmp ( attr -> values [ 1 ] . string . text , Classification ) ) ) { if ( attr -> num_values > 1 && ! strcmp ( attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text ) ) { ippSetString ( job -> attrs , & attr , 0 , Classification ) ; ippSetString ( job -> attrs , & attr , 1 , Classification ) ; } else { if ( attr -> num_values == 1 || strcmp ( attr -> values [ 0 ] . string . text , \"none\" ) ) ippSetString ( job -> attrs , & attr , 0 , Classification ) ; if ( attr -> num_values > 1 && strcmp ( attr -> values [ 1 ] . string . text , \"none\" ) ) ippSetString ( job -> attrs , & attr , 1 , Classification ) ; } if ( attr -> num_values > 1 ) cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>FORCED<S2SV_blank>\" \"job-sheets=\\\\\"%s,%s\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , attr -> values [ 0 ] . string . text , attr -> values [ 1 ] . string . text , job -> username ) ; else cupsdLogJob ( job , CUPSD_LOG_NOTICE , \"CLASSIFICATION<S2SV_blank>FORCED<S2SV_blank>\" \"job-sheets=\\\\\"%s\\\\\",<S2SV_blank>\" \"job-originating-user-name=\\\\\"%s\\\\\"\" , Classification , job -> username ) ; } } if ( ! ( printer -> type & CUPS_PRINTER_REMOTE ) ) { cupsdLogJob ( job , CUPSD_LOG_INFO , \"Adding<S2SV_blank>start<S2SV_blank>banner<S2SV_blank>page<S2SV_blank>\\\\\"%s\\\\\".\" , attr -> values [ 0 ] . string . text ) ; if ( ( kbytes = copy_banner ( con , job , attr -> values [ 0 ] . string . text ) ) < 0 ) { cupsdSetJobState ( job , IPP_JOB_ABORTED , CUPSD_JOB_PURGE , \"Aborting<S2SV_blank>job<S2SV_blank>because<S2SV_blank>the<S2SV_blank>start<S2SV_blank>banner<S2SV_blank>could<S2SV_blank>not<S2SV_blank>be<S2SV_blank>\" \"copied.\" ) ; return ( NULL ) ; } cupsdUpdateQuota ( printer , job -> username , 0 , kbytes ) ; } } else if ( ( attr = ippFindAttribute ( job -> attrs , \"job-sheets\" , IPP_TAG_ZERO ) ) != NULL ) job -> job_sheets = attr ; httpAssembleURIf ( HTTP_URI_CODING_ALL , job_uri , sizeof ( job_uri ) , \"ipp\" , NULL , con -> clientname , con -> clientport , \"/jobs/%d\" , job -> id ) ; ippAddString ( con -> response , IPP_TAG_JOB , IPP_TAG_URI , \"job-uri\" , NULL , job_uri ) ; ippAddInteger ( con -> response , IPP_TAG_JOB , IPP_TAG_INTEGER , \"job-id\" , job -> id ) ; ippAddInteger ( con -> response , IPP_TAG_JOB , IPP_TAG_ENUM , \"job-state\" , job -> state_value ) ; ippAddString ( con -> response , IPP_TAG_JOB , IPP_TAG_TEXT , \"job-state-message\" , NULL , \"\" ) ; ippAddString ( con -> response , IPP_TAG_JOB , IPP_TAG_KEYWORD , \"job-state-reasons\" , NULL , job -> reasons -> values [ 0 ] . string . text ) ; con -> response -> request . status . status_code = IPP_OK ; add_job_subscriptions ( con , job ) ; for ( attr = job -> attrs -> attrs -> next -> next ; attr ; attr = attr -> next ) attr -> group_tag = IPP_TAG_JOB ; cupsdAddEvent ( CUPSD_EVENT_JOB_CREATED , printer , job , \"Job<S2SV_blank>created.\" ) ; return ( job ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } attr = ippFindAttribute ( con -> request , \"requesting-user-name\" , IPP_TAG_NAME ) ; if ( attr && ! ippValidateAttribute ( attr ) ) { send_ipp_status ( con , IPP_ATTRIBUTES , _ ( \"Bad<S2SV_blank>requesting-user-name<S2SV_blank>value:<S2SV_blank>%s\" ) , cupsLastErrorString ( ) ) ; if ( ( attr = ippCopyAttribute ( con -> response , attr , 0 ) ) != NULL ) attr -> group_tag = IPP_TAG_UNSUPPORTED_GROUP ; return ( NULL ) ; } <S2SV_ModStart> printer , job <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6198\n\n```\nCWE-284 int vfs_open ( const struct path * path , struct file * file , const struct cred * cred ) { <S2SV_StartBug> struct dentry * dentry = path -> dentry ; <S2SV_EndBug> <S2SV_StartBug> struct inode * inode = dentry -> d_inode ; <S2SV_EndBug> file -> f_path = * path ; if ( dentry -> d_flags & DCACHE_OP_SELECT_INODE ) { inode = dentry -> d_op -> d_select_inode ( dentry , file -> f_flags ) ; if ( IS_ERR ( inode ) ) return PTR_ERR ( inode ) ; <S2SV_StartBug> } <S2SV_EndBug> return do_dentry_open ( file , inode , NULL , cred ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct <S2SV_ModEnd> inode * inode <S2SV_ModStart> * inode = vfs_select_inode ( path -> <S2SV_ModEnd> dentry , file <S2SV_ModStart> inode ) ; file -> f_path = * path ; <S2SV_ModEnd> return do_dentry_open (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3134\n\n```\nCWE-119 <S2SV_StartBug> static inline bool unconditional ( const struct ip6t_ip6 * ipv6 ) <S2SV_EndBug> { static const struct ip6t_ip6 uncond ; <S2SV_StartBug> return memcmp ( ipv6 , & uncond , sizeof ( uncond ) ) == 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( const struct ip6t_entry * e <S2SV_ModEnd> ) { static <S2SV_ModStart> uncond ; return e -> target_offset == sizeof ( struct ip6t_entry ) && memcmp ( & e -> <S2SV_ModEnd> ipv6 , &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19073\n\n```\nCWE-401 int htc_connect_service ( struct htc_target * target , struct htc_service_connreq * service_connreq , enum htc_endpoint_id * conn_rsp_epid ) { struct sk_buff * skb ; struct htc_endpoint * endpoint ; struct htc_conn_svc_msg * conn_msg ; int ret ; unsigned long time_left ; endpoint = get_next_avail_ep ( target -> endpoint ) ; if ( ! endpoint ) { dev_err ( target -> dev , \"Endpoint<S2SV_blank>is<S2SV_blank>not<S2SV_blank>available<S2SV_blank>for<S2SV_blank>service<S2SV_blank>%d\\\\n\" , service_connreq -> service_id ) ; return - EINVAL ; } endpoint -> service_id = service_connreq -> service_id ; endpoint -> max_txqdepth = service_connreq -> max_send_qdepth ; endpoint -> ul_pipeid = service_to_ulpipe ( service_connreq -> service_id ) ; endpoint -> dl_pipeid = service_to_dlpipe ( service_connreq -> service_id ) ; endpoint -> ep_callbacks = service_connreq -> ep_callbacks ; skb = alloc_skb ( sizeof ( struct htc_conn_svc_msg ) + sizeof ( struct htc_frame_hdr ) , GFP_ATOMIC ) ; if ( ! skb ) { dev_err ( target -> dev , \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>buf<S2SV_blank>to<S2SV_blank>send\" \"service<S2SV_blank>connect<S2SV_blank>req\\\\n\" ) ; return - ENOMEM ; } skb_reserve ( skb , sizeof ( struct htc_frame_hdr ) ) ; conn_msg = skb_put ( skb , sizeof ( struct htc_conn_svc_msg ) ) ; conn_msg -> service_id = cpu_to_be16 ( service_connreq -> service_id ) ; conn_msg -> msg_id = cpu_to_be16 ( HTC_MSG_CONNECT_SERVICE_ID ) ; conn_msg -> con_flags = cpu_to_be16 ( service_connreq -> con_flags ) ; conn_msg -> dl_pipeid = endpoint -> dl_pipeid ; conn_msg -> ul_pipeid = endpoint -> ul_pipeid ; ret = htc_issue_send ( target , skb , skb -> len , 0 , ENDPOINT0 ) ; if ( ret ) goto err ; time_left = wait_for_completion_timeout ( & target -> cmd_wait , HZ ) ; if ( ! time_left ) { dev_err ( target -> dev , \"Service<S2SV_blank>connection<S2SV_blank>timeout<S2SV_blank>for:<S2SV_blank>%d\\\\n\" , service_connreq -> service_id ) ; <S2SV_StartBug> return - ETIMEDOUT ; <S2SV_EndBug> } * conn_rsp_epid = target -> conn_rsp_epid ; return 0 ; err : kfree_skb ( skb ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> service_id ) ; kfree_skb ( skb ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8068\n\n```\nCWE-119 static int set_register ( pegasus_t * pegasus , __u16 indx , __u8 data ) { <S2SV_StartBug> int ret ; <S2SV_EndBug> ret = usb_control_msg ( pegasus -> usb , usb_sndctrlpipe ( pegasus -> usb , 0 ) , PEGASUS_REQ_SET_REG , PEGASUS_REQT_WRITE , data , <S2SV_StartBug> indx , & data , 1 , 1000 ) ; <S2SV_EndBug> if ( ret < 0 ) netif_dbg ( pegasus , drv , pegasus -> net , \"%s<S2SV_blank>returned<S2SV_blank>%d\\\\n\" , __func__ , ret ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> data ) { u8 * buf ; int ret ; buf = kmemdup ( & data , 1 , GFP_NOIO ) ; if ( ! buf ) return - ENOMEM <S2SV_ModEnd> ; ret = <S2SV_ModStart> , indx , buf <S2SV_ModEnd> , 1 , <S2SV_ModStart> ret ) ; kfree ( buf ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-835(无限循环)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11171\n\n```\nCWE-835 G_DEFINE_TYPE ( GsmXsmpServer , gsm_xsmp_server , G_TYPE_OBJECT ) typedef struct { GsmXsmpServer * server ; IceListenObj listener ; } GsmIceConnectionData ; <S2SV_StartBug> static gboolean <S2SV_EndBug> accept_ice_connection ( GIOChannel * source , GIOCondition condition , GsmIceConnectionData * data ) { IceListenObj listener ; IceConn ice_conn ; IceAcceptStatus status ; GsmClient * client ; GsmXsmpServer * server ; listener = data -> listener ; server = data -> server ; g_debug ( \"GsmXsmpServer:<S2SV_blank>accept_ice_connection()\" ) ; ice_conn = IceAcceptConnection ( listener , & status ) ; if ( status != IceAcceptSuccess ) { g_debug ( \"GsmXsmpServer:<S2SV_blank>IceAcceptConnection<S2SV_blank>returned<S2SV_blank>%d\" , status ) ; return TRUE ; } client = gsm_xsmp_client_new ( ice_conn ) ; <S2SV_StartBug> ice_conn -> context = client ; <S2SV_EndBug> gsm_store_add ( server -> priv -> client_store , gsm_client_peek_id ( client ) , G_OBJECT ( client ) ) ; g_object_unref ( client ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } GsmIceConnectionData ; typedef struct { guint watch_id ; guint protocol_timeout ; } GsmIceConnectionWatch ; static void disconnect_ice_connection ( IceConn ice_conn ) { IceSetShutdownNegotiation ( ice_conn , FALSE ) ; IceCloseConnection <S2SV_ModEnd> ( ice_conn ) <S2SV_ModStart> ice_conn ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2070\n\n```\nCWE-189 static void tcp_cwnd_reduction ( struct sock * sk , const int prior_unsacked , int fast_rexmit , int flag ) { struct tcp_sock * tp = tcp_sk ( sk ) ; int sndcnt = 0 ; int delta = tp -> snd_ssthresh - tcp_packets_in_flight ( tp ) ; int newly_acked_sacked = prior_unsacked - ( tp -> packets_out - tp -> sacked_out ) ; <S2SV_StartBug> tp -> prr_delivered += newly_acked_sacked ; <S2SV_EndBug> if ( delta < 0 ) { u64 dividend = ( u64 ) tp -> snd_ssthresh * tp -> prr_delivered + tp -> prior_cwnd - 1 ; sndcnt = div_u64 ( dividend , tp -> prior_cwnd ) - tp -> prr_out ; } else if ( ( flag & FLAG_RETRANS_DATA_ACKED ) && ! ( flag & FLAG_LOST_RETRANS ) ) { sndcnt = min_t ( int , delta , max_t ( int , tp -> prr_delivered - tp -> prr_out , newly_acked_sacked ) + 1 ) ; } else { sndcnt = min ( delta , newly_acked_sacked ) ; } sndcnt = max ( sndcnt , ( fast_rexmit ? 1 : 0 ) ) ; tp -> snd_cwnd = tcp_packets_in_flight ( tp ) + sndcnt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sacked_out ) ; if ( newly_acked_sacked <= 0 || WARN_ON_ONCE ( ! tp -> prior_cwnd ) ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13030\n\n```\nCWE-125 void cisco_autorp_print ( netdissect_options * ndo , register const u_char * bp , register u_int len ) { int type ; int numrps ; int hold ; <S2SV_StartBug> ND_TCHECK ( bp [ 0 ] ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>auto-rp<S2SV_blank>\" ) ) ; type = bp [ 0 ] ; switch ( type ) { case 0x11 : ND_PRINT ( ( ndo , \"candidate-advert\" ) ) ; break ; case 0x12 : ND_PRINT ( ( ndo , \"mapping\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"type-0x%02x\" , type ) ) ; break ; } ND_TCHECK ( bp [ 1 ] ) ; numrps = bp [ 1 ] ; ND_TCHECK2 ( bp [ 2 ] , 2 ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>Hold<S2SV_blank>\" ) ) ; hold = EXTRACT_16BITS ( & bp [ 2 ] ) ; if ( hold ) unsigned_relts_print ( ndo , EXTRACT_16BITS ( & bp [ 2 ] ) ) ; else ND_PRINT ( ( ndo , \"FOREVER\" ) ) ; bp += 8 ; len -= 8 ; while ( numrps -- ) { int nentries ; char s ; <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , 4 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>RP<S2SV_blank>%s\" , ipaddr_string ( ndo , bp ) ) ) ; <S2SV_StartBug> ND_TCHECK ( bp [ 4 ] ) ; <S2SV_EndBug> <S2SV_StartBug> switch ( bp [ 4 ] & 0x3 ) { <S2SV_EndBug> case 0 : ND_PRINT ( ( ndo , \"<S2SV_blank>PIMv?\" ) ) ; break ; case 1 : ND_PRINT ( ( ndo , \"<S2SV_blank>PIMv1\" ) ) ; break ; case 2 : ND_PRINT ( ( ndo , \"<S2SV_blank>PIMv2\" ) ) ; break ; case 3 : ND_PRINT ( ( ndo , \"<S2SV_blank>PIMv1+2\" ) ) ; break ; } <S2SV_StartBug> if ( bp [ 4 ] & 0xfc ) <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>[rsvd=0x%02x]\" , bp [ 4 ] & 0xfc ) ) ; <S2SV_EndBug> <S2SV_StartBug> ND_TCHECK ( bp [ 5 ] ) ; <S2SV_EndBug> <S2SV_StartBug> nentries = bp [ 5 ] ; <S2SV_EndBug> <S2SV_StartBug> bp += 6 ; len -= 6 ; <S2SV_EndBug> s = '<S2SV_blank>' ; for ( ; nentries ; nentries -- ) { <S2SV_StartBug> ND_TCHECK2 ( bp [ 0 ] , 6 ) ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"%c%s%s/%d\" , s , bp [ 0 ] & 1 ? \"!\" : \"\" , ipaddr_string ( ndo , & bp [ 2 ] ) , bp [ 1 ] ) ) ; if ( bp [ 0 ] & 0x02 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>bidir\" ) ) ; } if ( bp [ 0 ] & 0xfc ) { ND_PRINT ( ( ndo , \"[rsvd=0x%02x]\" , bp [ 0 ] & 0xfc ) ) ; } s = ',' ; bp += 6 ; len -= 6 ; } } return ; trunc : ND_PRINT ( ( ndo , \"[|autorp]\" ) ) ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int hold ; if ( len < 8 ) goto trunc ; <S2SV_ModStart> char s ; if ( len < 4 ) goto trunc ; <S2SV_ModStart> ) ) ; bp += 4 ; len -= 4 ; if ( len < 1 ) goto trunc ; <S2SV_ModStart> ( bp [ 0 <S2SV_ModEnd> ] ) ; <S2SV_ModStart> ( bp [ 0 <S2SV_ModEnd> ] & 0x3 <S2SV_ModStart> ( bp [ 0 <S2SV_ModEnd> ] & 0xfc <S2SV_ModStart> , bp [ 0 <S2SV_ModEnd> ] & 0xfc <S2SV_ModStart> ) ) ; bp += 1 ; len -= 1 ; if ( len < 1 ) goto trunc ; <S2SV_ModStart> ( bp [ 0 <S2SV_ModEnd> ] ) ; <S2SV_ModStart> = bp [ 0 <S2SV_ModEnd> ] ; bp <S2SV_ModStart> ; bp += 1 ; len -= 1 <S2SV_ModEnd> ; s = <S2SV_ModStart> -- ) { if ( len < 6 ) goto trunc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9226\n\n```\nCWE-787 static int fetch_token ( OnigToken * tok , UChar * * src , UChar * end , ScanEnv * env ) { int r , num ; OnigCodePoint c ; OnigEncoding enc = env -> enc ; OnigSyntaxType * syn = env -> syntax ; UChar * prev ; UChar * p = * src ; PFETCH_READY ; start : if ( PEND ) { tok -> type = TK_EOT ; return tok -> type ; } tok -> type = TK_STRING ; tok -> base = 0 ; tok -> backp = p ; PFETCH ( c ) ; if ( IS_MC_ESC_CODE ( c , syn ) ) { if ( PEND ) return ONIGERR_END_PATTERN_AT_ESCAPE ; tok -> backp = p ; PFETCH ( c ) ; tok -> u . c = c ; tok -> escaped = 1 ; switch ( c ) { case '*' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_ASTERISK_ZERO_INF ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '+' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_PLUS_ONE_INF ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 1 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '?' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_QMARK_ZERO_ONE ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = 1 ; greedy_check : if ( ! PEND && PPEEK_IS ( '?' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_QMARK_NON_GREEDY ) ) { PFETCH ( c ) ; tok -> u . repeat . greedy = 0 ; tok -> u . repeat . possessive = 0 ; } else { possessive_check : if ( ! PEND && PPEEK_IS ( '+' ) && ( ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_PLUS_POSSESSIVE_REPEAT ) && tok -> type != TK_INTERVAL ) || ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_PLUS_POSSESSIVE_INTERVAL ) && tok -> type == TK_INTERVAL ) ) ) { PFETCH ( c ) ; tok -> u . repeat . greedy = 1 ; tok -> u . repeat . possessive = 1 ; } else { tok -> u . repeat . greedy = 1 ; tok -> u . repeat . possessive = 0 ; } } break ; case '{' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_BRACE_INTERVAL ) ) break ; r = fetch_range_quantifier ( & p , end , tok , env ) ; if ( r < 0 ) return r ; if ( r == 0 ) goto greedy_check ; else if ( r == 2 ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY ) ) goto possessive_check ; goto greedy_check ; } break ; case '|' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_VBAR_ALT ) ) break ; tok -> type = TK_ALT ; break ; case '(' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_OPEN ; break ; case ')' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_CLOSE ; break ; case 'w' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_W_WORD ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 0 ; break ; case 'W' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_W_WORD ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 1 ; break ; case 'b' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_B_WORD_BOUND ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor = ANCHOR_WORD_BOUND ; break ; case 'B' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_B_WORD_BOUND ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor = ANCHOR_NOT_WORD_BOUND ; break ; # ifdef USE_WORD_BEGIN_END case '<' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor = ANCHOR_WORD_BEGIN ; break ; case '>' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor = ANCHOR_WORD_END ; break ; # endif case 's' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_S_WHITE_SPACE ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 0 ; break ; case 'S' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_S_WHITE_SPACE ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 1 ; break ; case 'd' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_D_DIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 0 ; break ; case 'D' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_D_DIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 1 ; break ; case 'h' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 0 ; break ; case 'H' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 1 ; break ; case 'A' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; begin_buf : tok -> type = TK_ANCHOR ; tok -> u . subtype = ANCHOR_BEGIN_BUF ; break ; case 'Z' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . subtype = ANCHOR_SEMI_END_BUF ; break ; case 'z' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; end_buf : tok -> type = TK_ANCHOR ; tok -> u . subtype = ANCHOR_END_BUF ; break ; case 'G' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_CAPITAL_G_BEGIN_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . subtype = ANCHOR_BEGIN_POSITION ; break ; case '`' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR ) ) break ; goto begin_buf ; break ; case '\\\\'' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR ) ) break ; goto end_buf ; break ; case 'x' : if ( PEND ) break ; prev = p ; if ( PPEEK_IS ( '{' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_BRACE_HEX8 ) ) { PINC ; num = scan_unsigned_hexadecimal_number ( & p , end , 8 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE ; if ( ! PEND ) { if ( ONIGENC_IS_CODE_XDIGIT ( enc , PPEEK ) ) return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE ; } if ( ( p > prev + enclen ( enc , prev ) ) && ! PEND && PPEEK_IS ( '}' ) ) { PINC ; tok -> type = TK_CODE_POINT ; tok -> u . code = ( OnigCodePoint ) num ; } else { p = prev ; } } else if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_HEX2 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 2 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 16 ; tok -> u . c = num ; } break ; case 'u' : if ( PEND ) break ; prev = p ; if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_U_HEX4 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 4 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_CODE_POINT ; tok -> base = 16 ; tok -> u . code = ( OnigCodePoint ) num ; } break ; case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : PUNFETCH ; prev = p ; num = onig_scan_unsigned_number ( & p , end , enc ) ; if ( num < 0 || num > ONIG_MAX_BACKREF_NUM ) { goto skip_backref ; } if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_DECIMAL_BACKREF ) && ( num <= env -> num_mem || num <= 9 ) ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_STRICT_CHECK_BACKREF ) ) { if ( num > env -> num_mem || IS_NULL ( SCANENV_MEM_NODES ( env ) [ num ] ) ) return ONIGERR_INVALID_BACKREF ; } tok -> type = TK_BACKREF ; tok -> u . backref . num = 1 ; tok -> u . backref . ref1 = num ; tok -> u . backref . by_name = 0 ; # ifdef USE_BACKREF_WITH_LEVEL tok -> u . backref . exist_level = 0 ; # endif break ; } skip_backref : if ( c == '8' || c == '9' ) { p = prev ; PINC ; break ; } p = prev ; case '0' : if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_OCTAL3 ) ) { prev = p ; num = scan_unsigned_octal_number ( & p , end , ( c == '0' ? 2 : 3 ) , enc ) ; <S2SV_StartBug> if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; <S2SV_EndBug> if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 8 ; tok -> u . c = num ; } else if ( c != '0' ) { PINC ; } break ; # ifdef USE_NAMED_GROUP case 'k' : if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_K_NAMED_BACKREF ) ) { PFETCH ( c ) ; if ( c == '<' || c == '\\\\'' ) { UChar * name_end ; int * backs ; int back_num ; prev = p ; # ifdef USE_BACKREF_WITH_LEVEL name_end = NULL_UCHARP ; r = fetch_name_with_level ( ( OnigCodePoint ) c , & p , end , & name_end , env , & back_num , & tok -> u . backref . level ) ; if ( r == 1 ) tok -> u . backref . exist_level = 1 ; else tok -> u . backref . exist_level = 0 ; # else r = fetch_name ( & p , end , & name_end , env , & back_num , 1 ) ; # endif if ( r < 0 ) return r ; if ( back_num != 0 ) { if ( back_num < 0 ) { back_num = BACKREF_REL_TO_ABS ( back_num , env ) ; if ( back_num <= 0 ) return ONIGERR_INVALID_BACKREF ; } if ( IS_SYNTAX_BV ( syn , ONIG_SYN_STRICT_CHECK_BACKREF ) ) { if ( back_num > env -> num_mem || IS_NULL ( SCANENV_MEM_NODES ( env ) [ back_num ] ) ) return ONIGERR_INVALID_BACKREF ; } tok -> type = TK_BACKREF ; tok -> u . backref . by_name = 0 ; tok -> u . backref . num = 1 ; tok -> u . backref . ref1 = back_num ; } else { num = onig_name_to_group_numbers ( env -> reg , prev , name_end , & backs ) ; if ( num <= 0 ) { onig_scan_env_set_error_string ( env , ONIGERR_UNDEFINED_NAME_REFERENCE , prev , name_end ) ; return ONIGERR_UNDEFINED_NAME_REFERENCE ; } if ( IS_SYNTAX_BV ( syn , ONIG_SYN_STRICT_CHECK_BACKREF ) ) { int i ; for ( i = 0 ; i < num ; i ++ ) { if ( backs [ i ] > env -> num_mem || IS_NULL ( SCANENV_MEM_NODES ( env ) [ backs [ i ] ] ) ) return ONIGERR_INVALID_BACKREF ; } } tok -> type = TK_BACKREF ; tok -> u . backref . by_name = 1 ; if ( num == 1 ) { tok -> u . backref . num = 1 ; tok -> u . backref . ref1 = backs [ 0 ] ; } else { tok -> u . backref . num = num ; tok -> u . backref . refs = backs ; } } } else PUNFETCH ; } break ; # endif # ifdef USE_SUBEXP_CALL case 'g' : if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_G_SUBEXP_CALL ) ) { PFETCH ( c ) ; if ( c == '<' || c == '\\\\'' ) { int gnum ; UChar * name_end ; prev = p ; r = fetch_name ( ( OnigCodePoint ) c , & p , end , & name_end , env , & gnum , 1 ) ; if ( r < 0 ) return r ; tok -> type = TK_CALL ; tok -> u . call . name = prev ; tok -> u . call . name_end = name_end ; tok -> u . call . gnum = gnum ; } else PUNFETCH ; } break ; # endif case 'Q' : if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_CAPITAL_Q_QUOTE ) ) { tok -> type = TK_QUOTE_OPEN ; } break ; case 'p' : case 'P' : if ( ! PEND && PPEEK_IS ( '{' ) && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY ) ) { PINC ; tok -> type = TK_CHAR_PROPERTY ; tok -> u . prop . not = ( c == 'P' ? 1 : 0 ) ; if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT ) ) { PFETCH ( c ) ; if ( c == '^' ) { tok -> u . prop . not = ( tok -> u . prop . not == 0 ? 1 : 0 ) ; } else PUNFETCH ; } } break ; default : { OnigCodePoint c2 ; PUNFETCH ; num = fetch_escaped_value ( & p , end , env , & c2 ) ; if ( num < 0 ) return num ; if ( tok -> u . c != c2 ) { tok -> type = TK_CODE_POINT ; tok -> u . code = c2 ; } else { p = tok -> backp + enclen ( enc , tok -> backp ) ; } } break ; } } else { tok -> u . c = c ; tok -> escaped = 0 ; # ifdef USE_VARIABLE_META_CHARS if ( ( c != ONIG_INEFFECTIVE_META_CHAR ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_VARIABLE_META_CHARACTERS ) ) { if ( c == MC_ANYCHAR ( syn ) ) goto any_char ; else if ( c == MC_ANYTIME ( syn ) ) goto anytime ; else if ( c == MC_ZERO_OR_ONE_TIME ( syn ) ) goto zero_or_one_time ; else if ( c == MC_ONE_OR_MORE_TIME ( syn ) ) goto one_or_more_time ; else if ( c == MC_ANYCHAR_ANYTIME ( syn ) ) { tok -> type = TK_ANYCHAR_ANYTIME ; goto out ; } } # endif switch ( c ) { case '.' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_DOT_ANYCHAR ) ) break ; # ifdef USE_VARIABLE_META_CHARS any_char : # endif tok -> type = TK_ANYCHAR ; break ; case '*' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ASTERISK_ZERO_INF ) ) break ; # ifdef USE_VARIABLE_META_CHARS anytime : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '+' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_PLUS_ONE_INF ) ) break ; # ifdef USE_VARIABLE_META_CHARS one_or_more_time : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 1 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '?' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_QMARK_ZERO_ONE ) ) break ; # ifdef USE_VARIABLE_META_CHARS zero_or_one_time : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = 1 ; goto greedy_check ; break ; case '{' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_BRACE_INTERVAL ) ) break ; r = fetch_range_quantifier ( & p , end , tok , env ) ; if ( r < 0 ) return r ; if ( r == 0 ) goto greedy_check ; else if ( r == 2 ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY ) ) goto possessive_check ; goto greedy_check ; } break ; case '|' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_VBAR_ALT ) ) break ; tok -> type = TK_ALT ; break ; case '(' : if ( ! PEND && PPEEK_IS ( '?' ) && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_QMARK_GROUP_EFFECT ) ) { PINC ; if ( ! PEND && PPEEK_IS ( '#' ) ) { PFETCH ( c ) ; while ( 1 ) { if ( PEND ) return ONIGERR_END_PATTERN_IN_GROUP ; PFETCH ( c ) ; if ( c == MC_ESC ( syn ) ) { if ( ! PEND ) PFETCH ( c ) ; } else { if ( c == ')' ) break ; } } goto start ; } PUNFETCH ; } if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_OPEN ; break ; case ')' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_CLOSE ; break ; case '^' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LINE_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . subtype = ( IS_SINGLELINE ( env -> option ) ? ANCHOR_BEGIN_BUF : ANCHOR_BEGIN_LINE ) ; break ; case '$' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LINE_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . subtype = ( IS_SINGLELINE ( env -> option ) ? ANCHOR_SEMI_END_BUF : ANCHOR_END_LINE ) ; break ; case '[' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_BRACKET_CC ) ) break ; tok -> type = TK_CC_OPEN ; break ; case ']' : if ( * src > env -> pattern ) CLOSE_BRACKET_WITHOUT_ESC_WARN ( env , ( UChar * ) \"]\" ) ; break ; case '#' : if ( IS_EXTEND ( env -> option ) ) { while ( ! PEND ) { PFETCH ( c ) ; if ( ONIGENC_IS_CODE_NEWLINE ( enc , c ) ) break ; } goto start ; break ; } break ; case '<S2SV_blank>' : case '\\\\t' : case '\\\\n' : case '\\\\r' : case '\\\\f' : if ( IS_EXTEND ( env -> option ) ) goto start ; break ; default : break ; } } # ifdef USE_VARIABLE_META_CHARS out : # endif * src = p ; return tok -> type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> num < 0 || num >= 256\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int em_call ( struct x86_emulate_ctxt * ctxt ) <S2SV_StartBug> { <S2SV_EndBug> long rel = ctxt -> src . val ; ctxt -> src . val = ( unsigned long ) ctxt -> _eip ; <S2SV_StartBug> jmp_rel ( ctxt , rel ) ; <S2SV_EndBug> return em_push ( ctxt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctxt ) { int rc ; <S2SV_ModStart> -> _eip ; rc = <S2SV_ModStart> , rel ) ; if ( rc != X86EMUL_CONTINUE ) return rc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4324\n\n```\nCWE-000 static void nfs4_close_prepare ( struct rpc_task * task , void * data ) { struct nfs4_closedata * calldata = data ; struct nfs4_state * state = calldata -> state ; int clear_rd , clear_wr , clear_rdwr ; if ( nfs_wait_on_sequence ( calldata -> arg . seqid , task ) != 0 ) return ; clear_rd = clear_wr = clear_rdwr = 0 ; spin_lock ( & state -> owner -> so_lock ) ; if ( state -> n_rdwr == 0 ) { if ( state -> n_rdonly == 0 ) { clear_rd |= test_and_clear_bit ( NFS_O_RDONLY_STATE , & state -> flags ) ; clear_rdwr |= test_and_clear_bit ( NFS_O_RDWR_STATE , & state -> flags ) ; } if ( state -> n_wronly == 0 ) { clear_wr |= test_and_clear_bit ( NFS_O_WRONLY_STATE , & state -> flags ) ; clear_rdwr |= test_and_clear_bit ( NFS_O_RDWR_STATE , & state -> flags ) ; } } spin_unlock ( & state -> owner -> so_lock ) ; if ( ! clear_rd && ! clear_wr && ! clear_rdwr ) { task -> tk_action = NULL ; return ; } nfs_fattr_init ( calldata -> res . fattr ) ; if ( test_bit ( NFS_O_RDONLY_STATE , & state -> flags ) != 0 ) { task -> tk_msg . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_OPEN_DOWNGRADE ] ; <S2SV_StartBug> calldata -> arg . open_flags = FMODE_READ ; <S2SV_EndBug> } else if ( test_bit ( NFS_O_WRONLY_STATE , & state -> flags ) != 0 ) { task -> tk_msg . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_OPEN_DOWNGRADE ] ; <S2SV_StartBug> calldata -> arg . open_flags = FMODE_WRITE ; <S2SV_EndBug> } calldata -> timestamp = jiffies ; rpc_call_start ( task ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> arg . fmode <S2SV_ModEnd> = FMODE_READ ; <S2SV_ModStart> -> arg . fmode <S2SV_ModEnd> = FMODE_WRITE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 static int growVTrans ( sqlite3 * db ) { const int ARRAY_INCR = 5 ; if ( ( db -> nVTrans % ARRAY_INCR ) == 0 ) { VTable * * aVTrans ; <S2SV_StartBug> int nBytes = sizeof ( sqlite3_vtab * ) * ( db -> nVTrans + ARRAY_INCR ) ; <S2SV_EndBug> aVTrans = sqlite3DbRealloc ( db , ( void * ) db -> aVTrans , nBytes ) ; if ( ! aVTrans ) { return SQLITE_NOMEM_BKPT ; } memset ( & aVTrans [ db -> nVTrans ] , 0 , sizeof ( sqlite3_vtab * ) * ARRAY_INCR ) ; db -> aVTrans = aVTrans ; } return SQLITE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * aVTrans ; sqlite3_int64 <S2SV_ModEnd> nBytes = sizeof <S2SV_ModStart> ) * ( ( sqlite3_int64 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-2925\n\n```\nCWE-254 <S2SV_StartBug> static void follow_dotdot ( struct nameidata * nd ) <S2SV_EndBug> { if ( ! nd -> root . mnt ) set_root ( nd ) ; while ( 1 ) { struct dentry * old = nd -> path . dentry ; if ( nd -> path . dentry == nd -> root . dentry && nd -> path . mnt == nd -> root . mnt ) { break ; } if ( nd -> path . dentry != nd -> path . mnt -> mnt_root ) { nd -> path . dentry = dget_parent ( nd -> path . dentry ) ; dput ( old ) ; <S2SV_StartBug> break ; <S2SV_EndBug> } if ( ! follow_up ( & nd -> path ) ) break ; } follow_mount ( & nd -> path ) ; nd -> inode = nd -> path . dentry -> d_inode ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> follow_dotdot ( struct <S2SV_ModStart> old ) ; if ( unlikely ( ! path_connected ( & nd -> path ) ) ) return - ENOENT ; <S2SV_ModStart> -> d_inode ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8104\n\n```\nCWE-399 static void enable_nmi_window ( struct kvm_vcpu * vcpu ) { struct vcpu_svm * svm = to_svm ( vcpu ) ; if ( ( svm -> vcpu . arch . hflags & ( HF_NMI_MASK | HF_IRET_MASK ) ) == HF_NMI_MASK ) return ; svm -> nmi_singlestep = true ; svm -> vmcb -> save . rflags |= ( X86_EFLAGS_TF | X86_EFLAGS_RF ) ; <S2SV_StartBug> update_db_bp_intercept ( vcpu ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> X86_EFLAGS_RF ) ; <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0203\n\n```\nCWE-416 static void * proc_pid_follow_link ( struct dentry * dentry , struct nameidata * nd ) { struct inode * inode = dentry -> d_inode ; int error = - EACCES ; path_put ( & nd -> path ) ; if ( ! proc_fd_access_allowed ( inode ) ) goto out ; error = PROC_I ( inode ) -> op . proc_get_link ( inode , & nd -> path ) ; <S2SV_StartBug> nd -> last_type = LAST_BIND ; <S2SV_EndBug> out : return ERR_PTR ( error ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> path ) ; <S2SV_ModEnd> out : return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2128\n\n```\nCWE-400 int tcp_read_sock ( struct sock * sk , read_descriptor_t * desc , sk_read_actor_t recv_actor ) { struct sk_buff * skb ; struct tcp_sock * tp = tcp_sk ( sk ) ; u32 seq = tp -> copied_seq ; u32 offset ; int copied = 0 ; if ( sk -> sk_state == TCP_LISTEN ) return - ENOTCONN ; while ( ( skb = tcp_recv_skb ( sk , seq , & offset ) ) != NULL ) { if ( offset < skb -> len ) { int used ; size_t len ; len = skb -> len - offset ; if ( tp -> urg_data ) { u32 urg_offset = tp -> urg_seq - seq ; if ( urg_offset < len ) len = urg_offset ; if ( ! len ) break ; } used = recv_actor ( desc , skb , offset , len ) ; if ( used < 0 ) { if ( ! copied ) copied = used ; break ; } else if ( used <= len ) { seq += used ; copied += used ; offset += used ; } skb = tcp_recv_skb ( sk , seq - 1 , & offset ) ; if ( ! skb || ( offset + 1 != skb -> len ) ) break ; } if ( tcp_hdr ( skb ) -> fin ) { sk_eat_skb ( sk , skb , 0 ) ; ++ seq ; break ; } sk_eat_skb ( sk , skb , 0 ) ; if ( ! desc -> count ) break ; <S2SV_StartBug> } <S2SV_EndBug> tp -> copied_seq = seq ; <S2SV_StartBug> tcp_rcv_space_adjust ( sk ) ; <S2SV_EndBug> if ( copied > 0 ) tcp_cleanup_rbuf ( sk , copied ) ; return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; <S2SV_ModEnd> tp -> copied_seq <S2SV_ModStart> = seq ; } tp -> copied_seq = seq ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7914\n\n```\nCWE-125 static bool assoc_array_insert_into_terminal_node ( struct assoc_array_edit * edit , const struct assoc_array_ops * ops , const void * index_key , struct assoc_array_walk_result * result ) { struct assoc_array_shortcut * shortcut , * new_s0 ; struct assoc_array_node * node , * new_n0 , * new_n1 , * side ; struct assoc_array_ptr * ptr ; unsigned long dissimilarity , base_seg , blank ; size_t keylen ; bool have_meta ; int level , diff ; int slot , next_slot , free_slot , i , j ; node = result -> terminal_node . node ; level = result -> terminal_node . level ; edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] = result -> terminal_node . slot ; pr_devel ( \"-->%s()\\\\n\" , __func__ ) ; free_slot = - 1 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; if ( ! ptr ) { free_slot = i ; continue ; } <S2SV_StartBug> if ( ops -> compare_object ( assoc_array_ptr_to_leaf ( ptr ) , index_key ) ) { <S2SV_EndBug> pr_devel ( \"replace<S2SV_blank>in<S2SV_blank>slot<S2SV_blank>%d\\\\n\" , i ) ; edit -> leaf_p = & node -> slots [ i ] ; edit -> dead_leaf = node -> slots [ i ] ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[replace]\\\\n\" , __func__ ) ; return true ; } } if ( free_slot >= 0 ) { pr_devel ( \"insert<S2SV_blank>in<S2SV_blank>free<S2SV_blank>slot<S2SV_blank>%d\\\\n\" , free_slot ) ; edit -> leaf_p = & node -> slots [ free_slot ] ; edit -> adjust_count_on = node ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[insert]\\\\n\" , __func__ ) ; return true ; } new_n0 = kzalloc ( sizeof ( struct assoc_array_node ) , GFP_KERNEL ) ; if ( ! new_n0 ) return false ; edit -> new_meta [ 0 ] = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 = kzalloc ( sizeof ( struct assoc_array_node ) , GFP_KERNEL ) ; if ( ! new_n1 ) return false ; edit -> new_meta [ 1 ] = assoc_array_node_to_ptr ( new_n1 ) ; pr_devel ( \"no<S2SV_blank>spare<S2SV_blank>slots\\\\n\" ) ; have_meta = false ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; if ( assoc_array_ptr_is_meta ( ptr ) ) { edit -> segment_cache [ i ] = 0xff ; have_meta = true ; continue ; } base_seg = ops -> get_object_key_chunk ( assoc_array_ptr_to_leaf ( ptr ) , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ i ] = base_seg & ASSOC_ARRAY_FAN_MASK ; } if ( have_meta ) { pr_devel ( \"have<S2SV_blank>meta\\\\n\" ) ; goto split_node ; } dissimilarity = 0 ; base_seg = edit -> segment_cache [ 0 ] ; for ( i = 1 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) dissimilarity |= edit -> segment_cache [ i ] ^ base_seg ; pr_devel ( \"only<S2SV_blank>leaves;<S2SV_blank>dissimilarity=%lx\\\\n\" , dissimilarity ) ; if ( ( dissimilarity & ASSOC_ARRAY_FAN_MASK ) == 0 ) { if ( ( edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] ^ base_seg ) == 0 ) goto all_leaves_cluster_together ; goto present_leaves_cluster_but_not_new_leaf ; } split_node : pr_devel ( \"split<S2SV_blank>node\\\\n\" ) ; edit -> set [ 0 ] . to = assoc_array_node_to_ptr ( new_n0 ) ; new_n0 -> back_pointer = node -> back_pointer ; new_n0 -> parent_slot = node -> parent_slot ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = - 1 ; do_split_node : pr_devel ( \"do_split_node\\\\n\" ) ; new_n0 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; new_n1 -> nr_leaves_on_branch = 0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { slot = edit -> segment_cache [ i ] ; if ( slot != 0xff ) for ( j = i + 1 ; j < ASSOC_ARRAY_FAN_OUT + 1 ; j ++ ) if ( edit -> segment_cache [ j ] == slot ) goto found_slot_for_multiple_occupancy ; } found_slot_for_multiple_occupancy : pr_devel ( \"same<S2SV_blank>slot:<S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>[%02x]\\\\n\" , i , j , slot ) ; BUG_ON ( i >= ASSOC_ARRAY_FAN_OUT ) ; BUG_ON ( j >= ASSOC_ARRAY_FAN_OUT + 1 ) ; BUG_ON ( slot >= ASSOC_ARRAY_FAN_OUT ) ; new_n1 -> parent_slot = slot ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) if ( assoc_array_ptr_is_meta ( node -> slots [ i ] ) ) new_n0 -> slots [ i ] = node -> slots [ i ] ; else new_n0 -> slots [ i ] = NULL ; BUG_ON ( new_n0 -> slots [ slot ] != NULL ) ; new_n0 -> slots [ slot ] = assoc_array_node_to_ptr ( new_n1 ) ; free_slot = - 1 ; next_slot = 0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { if ( assoc_array_ptr_is_meta ( node -> slots [ i ] ) ) continue ; if ( edit -> segment_cache [ i ] == slot ) { new_n1 -> slots [ next_slot ++ ] = node -> slots [ i ] ; new_n1 -> nr_leaves_on_branch ++ ; } else { do { free_slot ++ ; } while ( new_n0 -> slots [ free_slot ] != NULL ) ; new_n0 -> slots [ free_slot ] = node -> slots [ i ] ; } } pr_devel ( \"filtered:<S2SV_blank>f=%x<S2SV_blank>n=%x\\\\n\" , free_slot , next_slot ) ; if ( edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] != slot ) { do { free_slot ++ ; } while ( new_n0 -> slots [ free_slot ] != NULL ) ; edit -> leaf_p = & new_n0 -> slots [ free_slot ] ; edit -> adjust_count_on = new_n0 ; } else { edit -> leaf_p = & new_n1 -> slots [ next_slot ++ ] ; edit -> adjust_count_on = new_n1 ; } BUG_ON ( next_slot <= 1 ) ; edit -> set_backpointers_to = assoc_array_node_to_ptr ( new_n0 ) ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { if ( edit -> segment_cache [ i ] == 0xff ) { ptr = node -> slots [ i ] ; BUG_ON ( assoc_array_ptr_is_leaf ( ptr ) ) ; if ( assoc_array_ptr_is_node ( ptr ) ) { side = assoc_array_ptr_to_node ( ptr ) ; edit -> set_backpointers [ i ] = & side -> back_pointer ; } else { shortcut = assoc_array_ptr_to_shortcut ( ptr ) ; edit -> set_backpointers [ i ] = & shortcut -> back_pointer ; } } } ptr = node -> back_pointer ; if ( ! ptr ) edit -> set [ 0 ] . ptr = & edit -> array -> root ; else if ( assoc_array_ptr_is_node ( ptr ) ) edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_node ( ptr ) -> slots [ node -> parent_slot ] ; else edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_shortcut ( ptr ) -> next_node ; edit -> excised_meta [ 0 ] = assoc_array_node_to_ptr ( node ) ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[split<S2SV_blank>node]\\\\n\" , __func__ ) ; return true ; present_leaves_cluster_but_not_new_leaf : pr_devel ( \"present<S2SV_blank>leaves<S2SV_blank>cluster<S2SV_blank>but<S2SV_blank>not<S2SV_blank>new<S2SV_blank>leaf\\\\n\" ) ; new_n0 -> back_pointer = node -> back_pointer ; new_n0 -> parent_slot = node -> parent_slot ; new_n0 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = edit -> segment_cache [ 0 ] ; new_n1 -> nr_leaves_on_branch = node -> nr_leaves_on_branch ; edit -> adjust_count_on = new_n0 ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) new_n1 -> slots [ i ] = node -> slots [ i ] ; new_n0 -> slots [ edit -> segment_cache [ 0 ] ] = assoc_array_node_to_ptr ( new_n0 ) ; edit -> leaf_p = & new_n0 -> slots [ edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] ] ; edit -> set [ 0 ] . ptr = & assoc_array_ptr_to_node ( node -> back_pointer ) -> slots [ node -> parent_slot ] ; edit -> set [ 0 ] . to = assoc_array_node_to_ptr ( new_n0 ) ; edit -> excised_meta [ 0 ] = assoc_array_node_to_ptr ( node ) ; pr_devel ( \"<--%s()<S2SV_blank>=<S2SV_blank>ok<S2SV_blank>[insert<S2SV_blank>node<S2SV_blank>before]\\\\n\" , __func__ ) ; return true ; all_leaves_cluster_together : pr_devel ( \"all<S2SV_blank>leaves<S2SV_blank>cluster<S2SV_blank>together\\\\n\" ) ; diff = INT_MAX ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { int x = ops -> diff_objects ( assoc_array_ptr_to_leaf ( node -> slots [ i ] ) , index_key ) ; if ( x < diff ) { BUG_ON ( x < 0 ) ; diff = x ; } } BUG_ON ( diff == INT_MAX ) ; BUG_ON ( diff < level + ASSOC_ARRAY_LEVEL_STEP ) ; keylen = round_up ( diff , ASSOC_ARRAY_KEY_CHUNK_SIZE ) ; keylen >>= ASSOC_ARRAY_KEY_CHUNK_SHIFT ; new_s0 = kzalloc ( sizeof ( struct assoc_array_shortcut ) + keylen * sizeof ( unsigned long ) , GFP_KERNEL ) ; if ( ! new_s0 ) return false ; edit -> new_meta [ 2 ] = assoc_array_shortcut_to_ptr ( new_s0 ) ; edit -> set [ 0 ] . to = assoc_array_shortcut_to_ptr ( new_s0 ) ; new_s0 -> back_pointer = node -> back_pointer ; new_s0 -> parent_slot = node -> parent_slot ; new_s0 -> next_node = assoc_array_node_to_ptr ( new_n0 ) ; new_n0 -> back_pointer = assoc_array_shortcut_to_ptr ( new_s0 ) ; new_n0 -> parent_slot = 0 ; new_n1 -> back_pointer = assoc_array_node_to_ptr ( new_n0 ) ; new_n1 -> parent_slot = - 1 ; new_s0 -> skip_to_level = level = diff & ~ ASSOC_ARRAY_LEVEL_STEP_MASK ; pr_devel ( \"skip_to_level<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>[diff<S2SV_blank>%d]\\\\n\" , level , diff ) ; BUG_ON ( level <= 0 ) ; for ( i = 0 ; i < keylen ; i ++ ) new_s0 -> index_key [ i ] = ops -> get_key_chunk ( index_key , i * ASSOC_ARRAY_KEY_CHUNK_SIZE ) ; blank = ULONG_MAX << ( level & ASSOC_ARRAY_KEY_CHUNK_MASK ) ; pr_devel ( \"blank<S2SV_blank>off<S2SV_blank>[%zu]<S2SV_blank>%d:<S2SV_blank>%lx\\\\n\" , keylen - 1 , level , blank ) ; new_s0 -> index_key [ keylen - 1 ] &= ~ blank ; for ( i = 0 ; i < ASSOC_ARRAY_FAN_OUT ; i ++ ) { ptr = node -> slots [ i ] ; base_seg = ops -> get_object_key_chunk ( assoc_array_ptr_to_leaf ( ptr ) , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ i ] = base_seg & ASSOC_ARRAY_FAN_MASK ; } base_seg = ops -> get_key_chunk ( index_key , level ) ; base_seg >>= level & ASSOC_ARRAY_KEY_CHUNK_MASK ; edit -> segment_cache [ ASSOC_ARRAY_FAN_OUT ] = base_seg & ASSOC_ARRAY_FAN_MASK ; goto do_split_node ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( assoc_array_ptr_is_leaf ( ptr ) &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15785\n\n```\nCWE-119 static int _FVMenuClose ( FontView * fv ) { int i ; SplineFont * sf = fv -> b . cidmaster ? fv -> b . cidmaster : fv -> b . sf ; if ( ! SFCloseAllInstrs ( fv -> b . sf ) ) return ( false ) ; <S2SV_StartBug> if ( fv -> b . nextsame != NULL || fv -> b . sf -> fv != & fv -> b ) { <S2SV_EndBug> } else if ( SFAnyChanged ( sf ) ) { i = AskChanged ( fv -> b . sf ) ; if ( i == 2 ) return ( false ) ; if ( i == 0 && ! _FVMenuSave ( fv ) ) return ( false ) ; else SFClearAutoSave ( sf ) ; } _FVCloseWindows ( fv ) ; if ( sf -> filename != NULL ) RecentFilesRemember ( sf -> filename ) ; else if ( sf -> origname != NULL ) RecentFilesRemember ( sf -> origname ) ; GDrawDestroyWindow ( fv -> gw ) ; return ( true ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> b ) { } else if ( warn_script_unsaved && fv -> script_unsaved && AskScriptChanged ( ) == 2 ) { return false ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13045\n\n```\nCWE-416 static void sig_server_setup_fill_chatnet ( IRC_SERVER_CONNECT_REC * conn , IRC_CHATNET_REC * ircnet ) { if ( ! IS_IRC_SERVER_CONNECT ( conn ) ) return ; g_return_if_fail ( IS_IRCNET ( ircnet ) ) ; if ( ircnet -> alternate_nick != NULL ) { g_free_and_null ( conn -> alternate_nick ) ; conn -> alternate_nick = g_strdup ( ircnet -> alternate_nick ) ; } if ( ircnet -> usermode != NULL ) { g_free_and_null ( conn -> usermode ) ; conn -> usermode = g_strdup ( ircnet -> usermode ) ; } if ( ircnet -> max_kicks > 0 ) conn -> max_kicks = ircnet -> max_kicks ; if ( ircnet -> max_msgs > 0 ) conn -> max_msgs = ircnet -> max_msgs ; if ( ircnet -> max_modes > 0 ) conn -> max_modes = ircnet -> max_modes ; if ( ircnet -> max_whois > 0 ) conn -> max_whois = ircnet -> max_whois ; if ( ircnet -> max_cmds_at_once > 0 ) conn -> max_cmds_at_once = ircnet -> max_cmds_at_once ; if ( ircnet -> cmd_queue_speed > 0 ) conn -> cmd_queue_speed = ircnet -> cmd_queue_speed ; if ( ircnet -> max_query_chans > 0 ) conn -> max_query_chans = ircnet -> max_query_chans ; conn -> sasl_mechanism = SASL_MECHANISM_NONE ; conn -> sasl_username = NULL ; conn -> sasl_password = NULL ; if ( ircnet -> sasl_mechanism != NULL ) { if ( ! g_ascii_strcasecmp ( ircnet -> sasl_mechanism , \"plain\" ) ) { conn -> sasl_mechanism = SASL_MECHANISM_PLAIN ; if ( ircnet -> sasl_username != NULL && * ircnet -> sasl_username && ircnet -> sasl_password != NULL && * ircnet -> sasl_password ) { <S2SV_StartBug> conn -> sasl_username = ircnet -> sasl_username ; <S2SV_EndBug> conn -> sasl_password = ircnet -> sasl_password ; } else g_warning ( \"The<S2SV_blank>fields<S2SV_blank>sasl_username<S2SV_blank>and<S2SV_blank>sasl_password<S2SV_blank>are<S2SV_blank>either<S2SV_blank>missing<S2SV_blank>or<S2SV_blank>empty\" ) ; } else if ( ! g_ascii_strcasecmp ( ircnet -> sasl_mechanism , \"external\" ) ) { conn -> sasl_mechanism = SASL_MECHANISM_EXTERNAL ; } else g_warning ( \"Unsupported<S2SV_blank>SASL<S2SV_blank>mechanism<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>selected\" , ircnet -> sasl_mechanism ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sasl_username = g_strdup ( ircnet -> sasl_username ) ; conn -> sasl_password = g_strdup ( ircnet -> sasl_password ) <S2SV_ModEnd> ; } else\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-119 enum ImapAuthRes imap_auth_gss ( struct ImapData * idata , const char * method ) { gss_buffer_desc request_buf , send_token ; gss_buffer_t sec_token ; gss_name_t target_name ; gss_ctx_id_t context ; gss_OID mech_name ; char server_conf_flags ; gss_qop_t quality ; int cflags ; OM_uint32 maj_stat , min_stat ; char buf1 [ GSS_BUFSIZE ] , buf2 [ GSS_BUFSIZE ] ; unsigned long buf_size ; int rc ; if ( ! mutt_bit_isset ( idata -> capabilities , AGSSAPI ) ) return IMAP_AUTH_UNAVAIL ; if ( mutt_account_getuser ( & idata -> conn -> account ) < 0 ) return IMAP_AUTH_FAILURE ; snprintf ( buf1 , sizeof ( buf1 ) , \"imap@%s\" , idata -> conn -> account . host ) ; request_buf . value = buf1 ; request_buf . length = strlen ( buf1 ) ; maj_stat = gss_import_name ( & min_stat , & request_buf , gss_nt_service_name , & target_name ) ; if ( maj_stat != GSS_S_COMPLETE ) { mutt_debug ( 2 , \"Couldn\\'t<S2SV_blank>get<S2SV_blank>service<S2SV_blank>name<S2SV_blank>for<S2SV_blank>[%s]\\\\n\" , buf1 ) ; return IMAP_AUTH_UNAVAIL ; } else if ( DebugLevel >= 2 ) { gss_display_name ( & min_stat , target_name , & request_buf , & mech_name ) ; mutt_debug ( 2 , \"Using<S2SV_blank>service<S2SV_blank>name<S2SV_blank>[%s]\\\\n\" , ( char * ) request_buf . value ) ; gss_release_buffer ( & min_stat , & request_buf ) ; } sec_token = GSS_C_NO_BUFFER ; context = GSS_C_NO_CONTEXT ; maj_stat = gss_init_sec_context ( & min_stat , GSS_C_NO_CREDENTIAL , & context , target_name , GSS_C_NO_OID , GSS_C_MUTUAL_FLAG | GSS_C_SEQUENCE_FLAG , 0 , GSS_C_NO_CHANNEL_BINDINGS , sec_token , NULL , & send_token , ( unsigned int * ) & cflags , NULL ) ; if ( maj_stat != GSS_S_COMPLETE && maj_stat != GSS_S_CONTINUE_NEEDED ) { print_gss_error ( maj_stat , min_stat ) ; mutt_debug ( 1 , \"Error<S2SV_blank>acquiring<S2SV_blank>credentials<S2SV_blank>-<S2SV_blank>no<S2SV_blank>TGT?\\\\n\" ) ; gss_release_name ( & min_stat , & target_name ) ; return IMAP_AUTH_UNAVAIL ; } mutt_message ( _ ( \"Authenticating<S2SV_blank>(GSSAPI)...\" ) ) ; imap_cmd_start ( idata , \"AUTHENTICATE<S2SV_blank>GSSAPI\" ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_RESPOND ) { mutt_debug ( 2 , \"Invalid<S2SV_blank>response<S2SV_blank>from<S2SV_blank>server:<S2SV_blank>%s\\\\n\" , buf1 ) ; gss_release_name ( & min_stat , & target_name ) ; goto bail ; } mutt_debug ( 2 , \"Sending<S2SV_blank>credentials\\\\n\" ) ; mutt_b64_encode ( buf1 , send_token . value , send_token . length , sizeof ( buf1 ) - 2 ) ; gss_release_buffer ( & min_stat , & send_token ) ; mutt_str_strcat ( buf1 , sizeof ( buf1 ) , \"\\\\r\\\\n\" ) ; mutt_socket_send ( idata -> conn , buf1 ) ; while ( maj_stat == GSS_S_CONTINUE_NEEDED ) { do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_RESPOND ) { mutt_debug ( 1 , \"#1<S2SV_blank>Error<S2SV_blank>receiving<S2SV_blank>server<S2SV_blank>response.\\\\n\" ) ; gss_release_name ( & min_stat , & target_name ) ; goto bail ; } <S2SV_StartBug> request_buf . length = mutt_b64_decode ( buf2 , idata -> buf + 2 ) ; <S2SV_EndBug> request_buf . value = buf2 ; sec_token = & request_buf ; maj_stat = gss_init_sec_context ( & min_stat , GSS_C_NO_CREDENTIAL , & context , target_name , GSS_C_NO_OID , GSS_C_MUTUAL_FLAG | GSS_C_SEQUENCE_FLAG , 0 , GSS_C_NO_CHANNEL_BINDINGS , sec_token , NULL , & send_token , ( unsigned int * ) & cflags , NULL ) ; if ( maj_stat != GSS_S_COMPLETE && maj_stat != GSS_S_CONTINUE_NEEDED ) { print_gss_error ( maj_stat , min_stat ) ; mutt_debug ( 1 , \"Error<S2SV_blank>exchanging<S2SV_blank>credentials\\\\n\" ) ; gss_release_name ( & min_stat , & target_name ) ; goto err_abort_cmd ; } mutt_b64_encode ( buf1 , send_token . value , send_token . length , sizeof ( buf1 ) - 2 ) ; gss_release_buffer ( & min_stat , & send_token ) ; mutt_str_strcat ( buf1 , sizeof ( buf1 ) , \"\\\\r\\\\n\" ) ; mutt_socket_send ( idata -> conn , buf1 ) ; } gss_release_name ( & min_stat , & target_name ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc != IMAP_CMD_RESPOND ) { mutt_debug ( 1 , \"#2<S2SV_blank>Error<S2SV_blank>receiving<S2SV_blank>server<S2SV_blank>response.\\\\n\" ) ; goto bail ; } <S2SV_StartBug> request_buf . length = mutt_b64_decode ( buf2 , idata -> buf + 2 ) ; <S2SV_EndBug> request_buf . value = buf2 ; maj_stat = gss_unwrap ( & min_stat , context , & request_buf , & send_token , & cflags , & quality ) ; if ( maj_stat != GSS_S_COMPLETE ) { print_gss_error ( maj_stat , min_stat ) ; mutt_debug ( 2 , \"Couldn\\'t<S2SV_blank>unwrap<S2SV_blank>security<S2SV_blank>level<S2SV_blank>data\\\\n\" ) ; gss_release_buffer ( & min_stat , & send_token ) ; goto err_abort_cmd ; } mutt_debug ( 2 , \"Credential<S2SV_blank>exchange<S2SV_blank>complete\\\\n\" ) ; server_conf_flags = ( ( char * ) send_token . value ) [ 0 ] ; if ( ! ( ( ( char * ) send_token . value ) [ 0 ] & GSS_AUTH_P_NONE ) ) { mutt_debug ( 2 , \"Server<S2SV_blank>requires<S2SV_blank>integrity<S2SV_blank>or<S2SV_blank>privacy\\\\n\" ) ; gss_release_buffer ( & min_stat , & send_token ) ; goto err_abort_cmd ; } ( ( char * ) send_token . value ) [ 0 ] = '\\\\0' ; buf_size = ntohl ( * ( ( long * ) send_token . value ) ) ; gss_release_buffer ( & min_stat , & send_token ) ; mutt_debug ( 2 , \"Unwrapped<S2SV_blank>security<S2SV_blank>level<S2SV_blank>flags:<S2SV_blank>%c%c%c\\\\n\" , ( server_conf_flags & GSS_AUTH_P_NONE ) ? 'N' : '-' , ( server_conf_flags & GSS_AUTH_P_INTEGRITY ) ? 'I' : '-' , ( server_conf_flags & GSS_AUTH_P_PRIVACY ) ? 'P' : '-' ) ; mutt_debug ( 2 , \"Maximum<S2SV_blank>GSS<S2SV_blank>token<S2SV_blank>size<S2SV_blank>is<S2SV_blank>%ld\\\\n\" , buf_size ) ; buf_size = htonl ( buf_size ) ; memcpy ( buf1 , & buf_size , 4 ) ; buf1 [ 0 ] = GSS_AUTH_P_NONE ; strncpy ( buf1 + 4 , idata -> conn -> account . user , sizeof ( buf1 ) - 4 ) ; request_buf . value = buf1 ; request_buf . length = 4 + strlen ( idata -> conn -> account . user ) ; maj_stat = gss_wrap ( & min_stat , context , 0 , GSS_C_QOP_DEFAULT , & request_buf , & cflags , & send_token ) ; if ( maj_stat != GSS_S_COMPLETE ) { mutt_debug ( 2 , \"Error<S2SV_blank>creating<S2SV_blank>login<S2SV_blank>request\\\\n\" ) ; goto err_abort_cmd ; } mutt_b64_encode ( buf1 , send_token . value , send_token . length , sizeof ( buf1 ) - 2 ) ; mutt_debug ( 2 , \"Requesting<S2SV_blank>authorisation<S2SV_blank>as<S2SV_blank>%s\\\\n\" , idata -> conn -> account . user ) ; mutt_str_strcat ( buf1 , sizeof ( buf1 ) , \"\\\\r\\\\n\" ) ; mutt_socket_send ( idata -> conn , buf1 ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; if ( rc == IMAP_CMD_RESPOND ) { mutt_debug ( 1 , \"Unexpected<S2SV_blank>server<S2SV_blank>continuation<S2SV_blank>request.\\\\n\" ) ; goto err_abort_cmd ; } if ( imap_code ( idata -> buf ) ) { mutt_debug ( 2 , \"Releasing<S2SV_blank>GSS<S2SV_blank>credentials\\\\n\" ) ; maj_stat = gss_delete_sec_context ( & min_stat , & context , & send_token ) ; if ( maj_stat != GSS_S_COMPLETE ) mutt_debug ( 1 , \"Error<S2SV_blank>releasing<S2SV_blank>credentials\\\\n\" ) ; gss_release_buffer ( & min_stat , & send_token ) ; return IMAP_AUTH_SUCCESS ; } else goto bail ; err_abort_cmd : mutt_socket_send ( idata -> conn , \"*\\\\r\\\\n\" ) ; do rc = imap_cmd_step ( idata ) ; while ( rc == IMAP_CMD_CONTINUE ) ; bail : mutt_error ( _ ( \"GSSAPI<S2SV_blank>authentication<S2SV_blank>failed.\" ) ) ; return IMAP_AUTH_FAILURE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buf + 2 , sizeof ( buf2 ) <S2SV_ModStart> buf + 2 , sizeof ( buf2 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6903\n\n```\nCWE-269 void * Sys_LoadDll ( const char * name , qboolean useSystemLib ) { <S2SV_StartBug> void * dllhandle ; <S2SV_EndBug> if ( useSystemLib ) Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name ) ; if ( ! useSystemLib || ! ( dllhandle = Sys_LoadLibrary ( name ) ) ) { const char * topDir ; char libPath [ MAX_OSPATH ] ; topDir = Sys_BinaryPath ( ) ; if ( ! * topDir ) topDir = \".\" ; Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , topDir ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , topDir , PATH_SEP , name ) ; if ( ! ( dllhandle = Sys_LoadLibrary ( libPath ) ) ) { const char * basePath = Cvar_VariableString ( \"fs_basepath\" ) ; if ( ! basePath || ! * basePath ) basePath = \".\" ; if ( FS_FilenameCompare ( topDir , basePath ) ) { Com_Printf ( \"Trying<S2SV_blank>to<S2SV_blank>load<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>from<S2SV_blank>\\\\\"%s\\\\\"...\\\\n\" , name , basePath ) ; Com_sprintf ( libPath , sizeof ( libPath ) , \"%s%c%s\" , basePath , PATH_SEP , name ) ; dllhandle = Sys_LoadLibrary ( libPath ) ; } if ( ! dllhandle ) Com_Printf ( \"Loading<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>failed\\\\n\" , name ) ; } } return dllhandle ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * dllhandle ; if ( COM_CompareExtension ( name , \".pk3\" ) ) { Com_Printf ( \"Rejecting<S2SV_blank>DLL<S2SV_blank>named<S2SV_blank>\\\\\"%s\\\\\"\" , name ) ; return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8539\n\n```\nCWE-264 static int encrypted_update ( struct key * key , struct key_preparsed_payload * prep ) { struct encrypted_key_payload * epayload = key -> payload . data [ 0 ] ; struct encrypted_key_payload * new_epayload ; char * buf ; char * new_master_desc = NULL ; const char * format = NULL ; size_t datalen = prep -> datalen ; <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> if ( datalen <= 0 || datalen > 32767 || ! prep -> data ) return - EINVAL ; buf = kmalloc ( datalen + 1 , GFP_KERNEL ) ; if ( ! buf ) return - ENOMEM ; buf [ datalen ] = 0 ; memcpy ( buf , prep -> data , datalen ) ; ret = datablob_parse ( buf , & format , & new_master_desc , NULL , NULL ) ; if ( ret < 0 ) goto out ; ret = valid_master_desc ( new_master_desc , epayload -> master_desc ) ; if ( ret < 0 ) goto out ; new_epayload = encrypted_key_alloc ( key , epayload -> format , new_master_desc , epayload -> datalen ) ; if ( IS_ERR ( new_epayload ) ) { ret = PTR_ERR ( new_epayload ) ; goto out ; } __ekey_init ( new_epayload , epayload -> format , new_master_desc , epayload -> datalen ) ; memcpy ( new_epayload -> iv , epayload -> iv , ivsize ) ; memcpy ( new_epayload -> payload_data , epayload -> payload_data , epayload -> payload_datalen ) ; rcu_assign_keypointer ( key , new_epayload ) ; call_rcu ( & epayload -> rcu , encrypted_rcu_free ) ; out : kfree ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret = 0 ; if ( test_bit ( KEY_FLAG_NEGATIVE , & key -> flags ) ) return - ENOKEY\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7253\n\n```\nCWE-125 int ParseDsdiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t infilesize , total_samples ; DFFFileHeader dff_file_header ; DFFChunkHeader dff_chunk_header ; uint32_t bcount ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & dff_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & dff_file_header ) + 4 , sizeof ( DFFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( DFFFileHeader ) - 4 ) || strncmp ( dff_file_header . formType , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_file_header , sizeof ( DFFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackBigEndianToNative ( & dff_file_header , DFFFileHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && dff_file_header . ckDataSize && dff_file_header . ckDataSize + 1 && dff_file_header . ckDataSize + 12 != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file<S2SV_blank>(by<S2SV_blank>total<S2SV_blank>size)!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"file<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_file_header . ckDataSize ) ; # endif while ( 1 ) { if ( ! DoReadFile ( infile , & dff_chunk_header , sizeof ( DFFChunkHeader ) , & bcount ) || bcount != sizeof ( DFFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_chunk_header , sizeof ( DFFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( debug_logging_mode ) error_line ( \"chunk<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_chunk_header . ckDataSize ) ; if ( ! strncmp ( dff_chunk_header . ckID , \"FVER\" , 4 ) ) { uint32_t version ; if ( dff_chunk_header . ckDataSize != sizeof ( version ) || ! DoReadFile ( infile , & version , sizeof ( version ) , & bcount ) || bcount != sizeof ( version ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & version , sizeof ( version ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & version , \"L\" ) ; if ( debug_logging_mode ) error_line ( \"dsdiff<S2SV_blank>file<S2SV_blank>version<S2SV_blank>=<S2SV_blank>0x%08x\" , version ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"PROP\" , 4 ) ) { <S2SV_StartBug> char * prop_chunk = malloc ( ( size_t ) dff_chunk_header . ckDataSize ) ; <S2SV_EndBug> if ( ! DoReadFile ( infile , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize , & bcount ) || bcount != dff_chunk_header . ckDataSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } if ( ! strncmp ( prop_chunk , \"SND<S2SV_blank>\" , 4 ) ) { char * cptr = prop_chunk + 4 , * eptr = prop_chunk + dff_chunk_header . ckDataSize ; uint16_t numChannels , chansSpecified , chanMask = 0 ; uint32_t sampleRate ; while ( eptr - cptr >= sizeof ( dff_chunk_header ) ) { memcpy ( & dff_chunk_header , cptr , sizeof ( dff_chunk_header ) ) ; cptr += sizeof ( dff_chunk_header ) ; WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( eptr - cptr >= dff_chunk_header . ckDataSize ) { if ( ! strncmp ( dff_chunk_header . ckID , \"FS<S2SV_blank><S2SV_blank>\" , 4 ) && dff_chunk_header . ckDataSize == 4 ) { memcpy ( & sampleRate , cptr , sizeof ( sampleRate ) ) ; WavpackBigEndianToNative ( & sampleRate , \"L\" ) ; cptr += dff_chunk_header . ckDataSize ; if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>sample<S2SV_blank>rate<S2SV_blank>of<S2SV_blank>%u<S2SV_blank>Hz\" , sampleRate ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CHNL\" , 4 ) && dff_chunk_header . ckDataSize >= 2 ) { memcpy ( & numChannels , cptr , sizeof ( numChannels ) ) ; WavpackBigEndianToNative ( & numChannels , \"S\" ) ; cptr += sizeof ( numChannels ) ; chansSpecified = ( int ) ( dff_chunk_header . ckDataSize - sizeof ( numChannels ) ) / 4 ; while ( chansSpecified -- ) { if ( ! strncmp ( cptr , \"SLFT\" , 4 ) || ! strncmp ( cptr , \"MLFT\" , 4 ) ) chanMask |= 0x1 ; else if ( ! strncmp ( cptr , \"SRGT\" , 4 ) || ! strncmp ( cptr , \"MRGT\" , 4 ) ) chanMask |= 0x2 ; else if ( ! strncmp ( cptr , \"LS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x10 ; else if ( ! strncmp ( cptr , \"RS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x20 ; else if ( ! strncmp ( cptr , \"C<S2SV_blank><S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x4 ; else if ( ! strncmp ( cptr , \"LFE<S2SV_blank>\" , 4 ) ) chanMask |= 0x8 ; else if ( debug_logging_mode ) error_line ( \"undefined<S2SV_blank>channel<S2SV_blank>ID<S2SV_blank>%c%c%c%c\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; cptr += 4 ; } if ( debug_logging_mode ) error_line ( \"%d<S2SV_blank>channels,<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>0x%08x\" , numChannels , chanMask ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CMPR\" , 4 ) && dff_chunk_header . ckDataSize >= 4 ) { if ( strncmp ( cptr , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"DSDIFF<S2SV_blank>files<S2SV_blank>must<S2SV_blank>be<S2SV_blank>uncompressed,<S2SV_blank>not<S2SV_blank>\\\\\"%c%c%c%c\\\\\"!\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } cptr += dff_chunk_header . ckDataSize ; } else { if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP/SND<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; cptr += dff_chunk_header . ckDataSize ; } } else { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } } if ( chanMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>DSDIFF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( chanMask ) config -> channel_mask = chanMask ; config -> bits_per_sample = 8 ; config -> bytes_per_sample = 1 ; config -> num_channels = numChannels ; config -> sample_rate = sampleRate / 8 ; config -> qmode |= QMODE_DSD_MSB_FIRST ; } else if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>unknown<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , prop_chunk [ 0 ] , prop_chunk [ 1 ] , prop_chunk [ 2 ] , prop_chunk [ 3 ] , dff_chunk_header . ckDataSize ) ; free ( prop_chunk ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"DSD<S2SV_blank>\" , 4 ) ) { total_samples = dff_chunk_header . ckDataSize / config -> num_channels ; break ; } else { int bytes_to_copy = ( int ) ( ( ( dff_chunk_header . ckDataSize ) + 1 ) & ~ ( int64_t ) 1 ) ; char * buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( debug_logging_mode ) error_line ( \"setting<S2SV_blank>configuration<S2SV_blank>with<S2SV_blank>%lld<S2SV_blank>samples\" , total_samples ) ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { char * prop_chunk ; if ( dff_chunk_header . ckDataSize < 4 || dff_chunk_header . ckDataSize > 1024 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>total\" , ( int ) dff_chunk_header . ckDataSize ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void filter_selectively_horiz ( uint8_t * s , int pitch , unsigned int mask_16x16 , unsigned int mask_8x8 , unsigned int mask_4x4 , unsigned int mask_4x4_int , const loop_filter_info_n * lfi_n , const uint8_t * lfl ) { unsigned int mask ; int count ; for ( mask = mask_16x16 | mask_8x8 | mask_4x4 | mask_4x4_int ; mask ; mask >>= count ) { const loop_filter_thresh * lfi = lfi_n -> lfthr + * lfl ; count = 1 ; if ( mask & 1 ) { if ( mask_16x16 & 1 ) { if ( ( mask_16x16 & 3 ) == 3 ) { <S2SV_StartBug> vp9_lpf_horizontal_16 ( s , pitch , lfi -> mblim , lfi -> lim , <S2SV_EndBug> lfi -> hev_thr , 2 ) ; count = 2 ; } else { <S2SV_StartBug> vp9_lpf_horizontal_16 ( s , pitch , lfi -> mblim , lfi -> lim , <S2SV_EndBug> lfi -> hev_thr , 1 ) ; } } else if ( mask_8x8 & 1 ) { if ( ( mask_8x8 & 3 ) == 3 ) { const loop_filter_thresh * lfin = lfi_n -> lfthr + * ( lfl + 1 ) ; <S2SV_StartBug> vp9_lpf_horizontal_8_dual ( s , pitch , lfi -> mblim , lfi -> lim , <S2SV_EndBug> lfi -> hev_thr , lfin -> mblim , lfin -> lim , lfin -> hev_thr ) ; if ( ( mask_4x4_int & 3 ) == 3 ) { <S2SV_StartBug> vp9_lpf_horizontal_4_dual ( s + 4 * pitch , pitch , lfi -> mblim , <S2SV_EndBug> lfi -> lim , lfi -> hev_thr , lfin -> mblim , lfin -> lim , lfin -> hev_thr ) ; } else { if ( mask_4x4_int & 1 ) vp9_lpf_horizontal_4 ( s + 4 * pitch , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; else if ( mask_4x4_int & 2 ) <S2SV_StartBug> vp9_lpf_horizontal_4 ( s + 8 + 4 * pitch , pitch , lfin -> mblim , <S2SV_EndBug> lfin -> lim , lfin -> hev_thr , 1 ) ; } count = 2 ; } else { <S2SV_StartBug> vp9_lpf_horizontal_8 ( s , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; <S2SV_EndBug> if ( mask_4x4_int & 1 ) vp9_lpf_horizontal_4 ( s + 4 * pitch , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; } } else if ( mask_4x4 & 1 ) { if ( ( mask_4x4 & 3 ) == 3 ) { const loop_filter_thresh * lfin = lfi_n -> lfthr + * ( lfl + 1 ) ; <S2SV_StartBug> vp9_lpf_horizontal_4_dual ( s , pitch , lfi -> mblim , lfi -> lim , <S2SV_EndBug> lfi -> hev_thr , lfin -> mblim , lfin -> lim , lfin -> hev_thr ) ; if ( ( mask_4x4_int & 3 ) == 3 ) { <S2SV_StartBug> vp9_lpf_horizontal_4_dual ( s + 4 * pitch , pitch , lfi -> mblim , <S2SV_EndBug> lfi -> lim , lfi -> hev_thr , lfin -> mblim , lfin -> lim , lfin -> hev_thr ) ; } else { if ( mask_4x4_int & 1 ) vp9_lpf_horizontal_4 ( s + 4 * pitch , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; else if ( mask_4x4_int & 2 ) <S2SV_StartBug> vp9_lpf_horizontal_4 ( s + 8 + 4 * pitch , pitch , lfin -> mblim , <S2SV_EndBug> lfin -> lim , lfin -> hev_thr , 1 ) ; } count = 2 ; } else { <S2SV_StartBug> vp9_lpf_horizontal_4 ( s , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; <S2SV_EndBug> if ( mask_4x4_int & 1 ) vp9_lpf_horizontal_4 ( s + 4 * pitch , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; } } else if ( mask_4x4_int & 1 ) { vp9_lpf_horizontal_4 ( s + 4 * pitch , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; } } s += 8 * count ; lfl += count ; mask_16x16 >>= count ; mask_8x8 >>= count ; mask_4x4 >>= count ; mask_4x4_int >>= count ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 3 ) { vpx_lpf_horizontal_16 <S2SV_ModEnd> ( s , <S2SV_ModStart> } else { vpx_lpf_horizontal_16 <S2SV_ModEnd> ( s , <S2SV_ModStart> 1 ) ; vpx_lpf_horizontal_8_dual <S2SV_ModEnd> ( s , <S2SV_ModStart> 3 ) { vpx_lpf_horizontal_4_dual ( s + 4 * pitch , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , lfin -> mblim , lfin -> lim , lfin -> hev_thr ) ; } else { if ( mask_4x4_int & 1 ) vpx_lpf_horizontal_4 <S2SV_ModEnd> ( s + <S2SV_ModStart> & 2 ) vpx_lpf_horizontal_4 <S2SV_ModEnd> ( s + <S2SV_ModStart> } else { vpx_lpf_horizontal_8 ( s , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; if ( mask_4x4_int & 1 ) vpx_lpf_horizontal_4 <S2SV_ModEnd> ( s + <S2SV_ModStart> 1 ) ; vpx_lpf_horizontal_4_dual <S2SV_ModEnd> ( s , <S2SV_ModStart> 3 ) { vpx_lpf_horizontal_4_dual ( s + 4 * pitch , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , lfin -> mblim , lfin -> lim , lfin -> hev_thr ) ; } else { if ( mask_4x4_int & 1 ) vpx_lpf_horizontal_4 <S2SV_ModEnd> ( s + <S2SV_ModStart> & 2 ) vpx_lpf_horizontal_4 <S2SV_ModEnd> ( s + <S2SV_ModStart> } else { vpx_lpf_horizontal_4 ( s , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; if ( mask_4x4_int & 1 ) vpx_lpf_horizontal_4 ( s + 4 * pitch , pitch , lfi -> mblim , lfi -> lim , lfi -> hev_thr , 1 ) ; } } else if ( mask_4x4_int & 1 ) { vpx_lpf_horizontal_4 <S2SV_ModEnd> ( s +\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6787\n\n```\nCWE-264 static ssize_t perf_read ( struct file * file , char __user * buf , size_t count , loff_t * ppos ) { struct perf_event * event = file -> private_data ; <S2SV_StartBug> return perf_read_hw ( event , buf , count ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private_data ; struct perf_event_context * ctx ; int ret ; ctx = perf_event_ctx_lock ( event ) ; ret = <S2SV_ModEnd> perf_read_hw ( event <S2SV_ModStart> count ) ; perf_event_ctx_unlock ( event , ctx ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-755(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19924\n\n```\nCWE-755 int sqlite3WindowRewrite ( Parse * pParse , Select * p ) { int rc = SQLITE_OK ; if ( p -> pWin && p -> pPrior == 0 && ( p -> selFlags & SF_WinRewrite ) == 0 ) { Vdbe * v = sqlite3GetVdbe ( pParse ) ; sqlite3 * db = pParse -> db ; Select * pSub = 0 ; SrcList * pSrc = p -> pSrc ; Expr * pWhere = p -> pWhere ; ExprList * pGroupBy = p -> pGroupBy ; Expr * pHaving = p -> pHaving ; ExprList * pSort = 0 ; ExprList * pSublist = 0 ; Window * pMWin = p -> pWin ; Window * pWin ; Table * pTab ; pTab = sqlite3DbMallocZero ( db , sizeof ( Table ) ) ; if ( pTab == 0 ) { <S2SV_StartBug> return SQLITE_NOMEM ; <S2SV_EndBug> } p -> pSrc = 0 ; p -> pWhere = 0 ; p -> pGroupBy = 0 ; p -> pHaving = 0 ; p -> selFlags &= ~ SF_Aggregate ; p -> selFlags |= SF_WinRewrite ; pSort = sqlite3ExprListDup ( db , pMWin -> pPartition , 0 ) ; pSort = exprListAppendList ( pParse , pSort , pMWin -> pOrderBy , 1 ) ; if ( pSort && p -> pOrderBy && p -> pOrderBy -> nExpr <= pSort -> nExpr ) { int nSave = pSort -> nExpr ; pSort -> nExpr = p -> pOrderBy -> nExpr ; if ( sqlite3ExprListCompare ( pSort , p -> pOrderBy , - 1 ) == 0 ) { sqlite3ExprListDelete ( db , p -> pOrderBy ) ; p -> pOrderBy = 0 ; } pSort -> nExpr = nSave ; } pMWin -> iEphCsr = pParse -> nTab ++ ; pParse -> nTab += 3 ; selectWindowRewriteEList ( pParse , pMWin , pSrc , p -> pEList , pTab , & pSublist ) ; selectWindowRewriteEList ( pParse , pMWin , pSrc , p -> pOrderBy , pTab , & pSublist ) ; pMWin -> nBufferCol = ( pSublist ? pSublist -> nExpr : 0 ) ; pSublist = exprListAppendList ( pParse , pSublist , pMWin -> pPartition , 0 ) ; pSublist = exprListAppendList ( pParse , pSublist , pMWin -> pOrderBy , 0 ) ; for ( pWin = pMWin ; pWin ; pWin = pWin -> pNextWin ) { ExprList * pArgs = pWin -> pOwner -> x . pList ; if ( pWin -> pFunc -> funcFlags & SQLITE_FUNC_SUBTYPE ) { selectWindowRewriteEList ( pParse , pMWin , pSrc , pArgs , pTab , & pSublist ) ; pWin -> iArgCol = ( pSublist ? pSublist -> nExpr : 0 ) ; pWin -> bExprArgs = 1 ; } else { pWin -> iArgCol = ( pSublist ? pSublist -> nExpr : 0 ) ; pSublist = exprListAppendList ( pParse , pSublist , pArgs , 0 ) ; } if ( pWin -> pFilter ) { Expr * pFilter = sqlite3ExprDup ( db , pWin -> pFilter , 0 ) ; pSublist = sqlite3ExprListAppend ( pParse , pSublist , pFilter ) ; } pWin -> regAccum = ++ pParse -> nMem ; pWin -> regResult = ++ pParse -> nMem ; sqlite3VdbeAddOp2 ( v , OP_Null , 0 , pWin -> regAccum ) ; } if ( pSublist == 0 ) { pSublist = sqlite3ExprListAppend ( pParse , 0 , sqlite3Expr ( db , TK_INTEGER , \"0\" ) ) ; } pSub = sqlite3SelectNew ( pParse , pSublist , pSrc , pWhere , pGroupBy , pHaving , pSort , 0 , 0 ) ; p -> pSrc = sqlite3SrcListAppend ( pParse , 0 , 0 , 0 ) ; if ( p -> pSrc ) { Table * pTab2 ; p -> pSrc -> a [ 0 ] . pSelect = pSub ; sqlite3SrcListAssignCursors ( pParse , p -> pSrc ) ; pSub -> selFlags |= SF_Expanded ; pTab2 = sqlite3ResultSetOfSelect ( pParse , pSub , SQLITE_AFF_NONE ) ; if ( pTab2 == 0 ) { rc = SQLITE_NOMEM ; } else { memcpy ( pTab , pTab2 , sizeof ( Table ) ) ; pTab -> tabFlags |= TF_Ephemeral ; p -> pSrc -> a [ 0 ] . pTab = pTab ; pTab = pTab2 ; } sqlite3VdbeAddOp2 ( v , OP_OpenEphemeral , pMWin -> iEphCsr , pSublist -> nExpr ) ; sqlite3VdbeAddOp2 ( v , OP_OpenDup , pMWin -> iEphCsr + 1 , pMWin -> iEphCsr ) ; sqlite3VdbeAddOp2 ( v , OP_OpenDup , pMWin -> iEphCsr + 2 , pMWin -> iEphCsr ) ; sqlite3VdbeAddOp2 ( v , OP_OpenDup , pMWin -> iEphCsr + 3 , pMWin -> iEphCsr ) ; } else { sqlite3SelectDelete ( db , pSub ) ; } if ( db -> mallocFailed ) rc = SQLITE_NOMEM ; sqlite3DbFree ( db , pTab ) ; } <S2SV_StartBug> return rc ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { return sqlite3ErrorToParser ( db , SQLITE_NOMEM ) <S2SV_ModEnd> ; } p <S2SV_ModStart> ) ; } if ( rc && pParse -> nErr == 0 ) { assert ( pParse -> db -> mallocFailed ) ; return sqlite3ErrorToParser ( pParse -> db , SQLITE_NOMEM ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int main ( int argc , char * * argv ) { FILE * infile , * outfile [ NUM_ENCODERS ] ; <S2SV_StartBug> vpx_codec_ctx_t codec [ NUM_ENCODERS ] ; <S2SV_EndBug> vpx_codec_enc_cfg_t cfg [ NUM_ENCODERS ] ; <S2SV_StartBug> vpx_codec_pts_t frame_cnt = 0 ; <S2SV_EndBug> vpx_image_t raw [ NUM_ENCODERS ] ; vpx_codec_err_t res [ NUM_ENCODERS ] ; int i ; long width ; long height ; <S2SV_StartBug> int frame_avail ; <S2SV_EndBug> int got_data ; int flags = 0 ; <S2SV_StartBug> int arg_deadline = VPX_DL_REALTIME ; <S2SV_EndBug> int show_psnr = 0 ; <S2SV_StartBug> uint64_t psnr_sse_total [ NUM_ENCODERS ] = { 0 } ; <S2SV_EndBug> uint64_t psnr_samples_total [ NUM_ENCODERS ] = { 0 } ; double psnr_totals [ NUM_ENCODERS ] [ 4 ] = { { 0 , 0 } } ; <S2SV_StartBug> int psnr_count [ NUM_ENCODERS ] = { 0 } ; <S2SV_EndBug> unsigned int target_bitrate [ NUM_ENCODERS ] = { 1000 , 500 , 100 } ; int framerate = 30 ; vpx_rational_t dsf [ NUM_ENCODERS ] = { { 2 , 1 } , { 2 , 1 } , { 1 , 1 } } ; <S2SV_StartBug> if ( argc != ( 5 + NUM_ENCODERS ) ) <S2SV_EndBug> <S2SV_StartBug> die ( \"Usage:<S2SV_blank>%s<S2SV_blank><width><S2SV_blank><height><S2SV_blank><infile><S2SV_blank><outfile(s)><S2SV_blank><output<S2SV_blank>psnr?>\\\\n\" , <S2SV_EndBug> argv [ 0 ] ) ; printf ( \"Using<S2SV_blank>%s\\\\n\" , vpx_codec_iface_name ( interface ) ) ; width = strtol ( argv [ 1 ] , NULL , 0 ) ; <S2SV_StartBug> height = strtol ( argv [ 2 ] , NULL , 0 ) ; <S2SV_EndBug> if ( width < 16 || width % 2 || height < 16 || height % 2 ) die ( \"Invalid<S2SV_blank>resolution:<S2SV_blank>%ldx%ld\" , width , height ) ; <S2SV_StartBug> if ( ! ( infile = fopen ( argv [ 3 ] , \"rb\" ) ) ) <S2SV_EndBug> <S2SV_StartBug> die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading\" , argv [ 3 ] ) ; <S2SV_EndBug> for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { if ( ! target_bitrate [ i ] ) { outfile [ i ] = NULL ; continue ; } <S2SV_StartBug> if ( ! ( outfile [ i ] = fopen ( argv [ i + 4 ] , \"wb\" ) ) ) <S2SV_EndBug> die ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\" , argv [ i + 4 ] ) ; } <S2SV_StartBug> show_psnr = strtol ( argv [ NUM_ENCODERS + 4 ] , NULL , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) <S2SV_EndBug> { <S2SV_StartBug> res [ i ] = vpx_codec_enc_config_default ( interface , & cfg [ i ] , 0 ) ; <S2SV_EndBug> if ( res [ i ] ) { printf ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>config:<S2SV_blank>%s\\\\n\" , vpx_codec_err_to_string ( res [ i ] ) ) ; return EXIT_FAILURE ; } <S2SV_StartBug> } <S2SV_EndBug> cfg [ 0 ] . g_w = width ; cfg [ 0 ] . g_h = height ; <S2SV_StartBug> cfg [ 0 ] . g_threads = 1 ; <S2SV_EndBug> cfg [ 0 ] . rc_dropframe_thresh = 30 ; cfg [ 0 ] . rc_end_usage = VPX_CBR ; cfg [ 0 ] . rc_resize_allowed = 0 ; <S2SV_StartBug> cfg [ 0 ] . rc_min_quantizer = 4 ; <S2SV_EndBug> cfg [ 0 ] . rc_max_quantizer = 56 ; <S2SV_StartBug> cfg [ 0 ] . rc_undershoot_pct = 98 ; <S2SV_EndBug> <S2SV_StartBug> cfg [ 0 ] . rc_overshoot_pct = 100 ; <S2SV_EndBug> cfg [ 0 ] . rc_buf_initial_sz = 500 ; cfg [ 0 ] . rc_buf_optimal_sz = 600 ; cfg [ 0 ] . rc_buf_sz = 1000 ; cfg [ 0 ] . g_error_resilient = 1 ; cfg [ 0 ] . g_lag_in_frames = 0 ; cfg [ 0 ] . kf_mode = VPX_KF_AUTO ; cfg [ 0 ] . kf_min_dist = 3000 ; cfg [ 0 ] . kf_max_dist = 3000 ; cfg [ 0 ] . rc_target_bitrate = target_bitrate [ 0 ] ; cfg [ 0 ] . g_timebase . num = 1 ; cfg [ 0 ] . g_timebase . den = framerate ; for ( i = 1 ; i < NUM_ENCODERS ; i ++ ) { <S2SV_StartBug> memcpy ( & cfg [ i ] , & cfg [ 0 ] , sizeof ( vpx_codec_enc_cfg_t ) ) ; <S2SV_EndBug> cfg [ i ] . g_threads = 1 ; cfg [ i ] . rc_target_bitrate = target_bitrate [ i ] ; { unsigned int iw = cfg [ i - 1 ] . g_w * dsf [ i - 1 ] . den + dsf [ i - 1 ] . num - 1 ; unsigned int ih = cfg [ i - 1 ] . g_h * dsf [ i - 1 ] . den + dsf [ i - 1 ] . num - 1 ; cfg [ i ] . g_w = iw / dsf [ i - 1 ] . num ; cfg [ i ] . g_h = ih / dsf [ i - 1 ] . num ; } if ( ( cfg [ i ] . g_w ) % 2 ) cfg [ i ] . g_w ++ ; if ( ( cfg [ i ] . g_h ) % 2 ) cfg [ i ] . g_h ++ ; } <S2SV_StartBug> for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) <S2SV_EndBug> if ( ! vpx_img_alloc ( & raw [ i ] , VPX_IMG_FMT_I420 , cfg [ i ] . g_w , cfg [ i ] . g_h , 32 ) ) die ( \"Failed<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>image\" , cfg [ i ] . g_w , cfg [ i ] . g_h ) ; if ( raw [ 0 ] . stride [ VPX_PLANE_Y ] == raw [ 0 ] . d_w ) read_frame_p = read_frame ; else read_frame_p = read_frame_by_row ; for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) if ( outfile [ i ] ) <S2SV_StartBug> write_ivf_file_header ( outfile [ i ] , & cfg [ i ] , 0 ) ; <S2SV_EndBug> if ( vpx_codec_enc_init_multi ( & codec [ 0 ] , interface , & cfg [ 0 ] , NUM_ENCODERS , ( show_psnr ? VPX_CODEC_USE_PSNR : 0 ) , & dsf [ 0 ] ) ) die_codec ( & codec [ 0 ] , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>encoder\" ) ; for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { int speed = - 6 ; <S2SV_StartBug> if ( vpx_codec_control ( & codec [ i ] , VP8E_SET_CPUUSED , speed ) ) <S2SV_EndBug> <S2SV_StartBug> die_codec ( & codec [ i ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>cpu_used\" ) ; <S2SV_EndBug> } for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { <S2SV_StartBug> unsigned int static_thresh = 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( vpx_codec_control ( & codec [ i ] , VP8E_SET_STATIC_THRESHOLD , static_thresh ) ) <S2SV_EndBug> <S2SV_StartBug> die_codec ( & codec [ i ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>static<S2SV_blank>threshold\" ) ; <S2SV_EndBug> } if ( vpx_codec_control ( & codec [ 0 ] , VP8E_SET_NOISE_SENSITIVITY , 1 ) ) die_codec ( & codec [ 0 ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>noise_sensitivity\" ) ; for ( i = 1 ; i < NUM_ENCODERS ; i ++ ) { if ( vpx_codec_control ( & codec [ i ] , VP8E_SET_NOISE_SENSITIVITY , 0 ) ) die_codec ( & codec [ i ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>noise_sensitivity\" ) ; } frame_avail = 1 ; got_data = 0 ; while ( frame_avail || got_data ) { vpx_codec_iter_t iter [ NUM_ENCODERS ] = { NULL } ; const vpx_codec_cx_pkt_t * pkt [ NUM_ENCODERS ] ; flags = 0 ; frame_avail = read_frame_p ( infile , & raw [ 0 ] ) ; if ( frame_avail ) { for ( i = 1 ; i < NUM_ENCODERS ; i ++ ) { I420Scale ( raw [ i - 1 ] . planes [ VPX_PLANE_Y ] , raw [ i - 1 ] . stride [ VPX_PLANE_Y ] , raw [ i - 1 ] . planes [ VPX_PLANE_U ] , raw [ i - 1 ] . stride [ VPX_PLANE_U ] , raw [ i - 1 ] . planes [ VPX_PLANE_V ] , raw [ i - 1 ] . stride [ VPX_PLANE_V ] , raw [ i - 1 ] . d_w , raw [ i - 1 ] . d_h , raw [ i ] . planes [ VPX_PLANE_Y ] , raw [ i ] . stride [ VPX_PLANE_Y ] , raw [ i ] . planes [ VPX_PLANE_U ] , raw [ i ] . stride [ VPX_PLANE_U ] , raw [ i ] . planes [ VPX_PLANE_V ] , raw [ i ] . stride [ VPX_PLANE_V ] , raw [ i ] . d_w , raw [ i ] . d_h , 1 ) ; <S2SV_StartBug> } <S2SV_EndBug> } if ( vpx_codec_encode ( & codec [ 0 ] , frame_avail ? & raw [ 0 ] : NULL , <S2SV_StartBug> frame_cnt , 1 , flags , arg_deadline ) ) <S2SV_EndBug> <S2SV_StartBug> die_codec ( & codec [ 0 ] , \"Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame\" ) ; <S2SV_EndBug> for ( i = NUM_ENCODERS - 1 ; i >= 0 ; i -- ) { got_data = 0 ; while ( ( pkt [ i ] = vpx_codec_get_cx_data ( & codec [ i ] , & iter [ i ] ) ) ) { got_data = 1 ; switch ( pkt [ i ] -> kind ) { case VPX_CODEC_CX_FRAME_PKT : write_ivf_frame_header ( outfile [ i ] , pkt [ i ] ) ; ( void ) fwrite ( pkt [ i ] -> data . frame . buf , 1 , pkt [ i ] -> data . frame . sz , outfile [ i ] ) ; break ; case VPX_CODEC_PSNR_PKT : if ( show_psnr ) { int j ; psnr_sse_total [ i ] += pkt [ i ] -> data . psnr . sse [ 0 ] ; psnr_samples_total [ i ] += pkt [ i ] -> data . psnr . samples [ 0 ] ; for ( j = 0 ; j < 4 ; j ++ ) { psnr_totals [ i ] [ j ] += pkt [ i ] -> data . psnr . psnr [ j ] ; } psnr_count [ i ] ++ ; } break ; default : break ; } printf ( pkt [ i ] -> kind == VPX_CODEC_CX_FRAME_PKT <S2SV_StartBug> && ( pkt [ i ] -> data . frame . flags & VPX_FRAME_IS_KEY ) ? \"K\" : \".\" ) ; <S2SV_EndBug> fflush ( stdout ) ; } } frame_cnt ++ ; } <S2SV_StartBug> printf ( \"\\\\n\" ) ; <S2SV_EndBug> fclose ( infile ) ; printf ( \"Processed<S2SV_blank>%ld<S2SV_blank>frames.\\\\n\" , ( long int ) frame_cnt - 1 ) ; for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { if ( ( show_psnr ) && ( psnr_count [ i ] > 0 ) ) { int j ; double ovpsnr = sse_to_psnr ( psnr_samples_total [ i ] , 255.0 , psnr_sse_total [ i ] ) ; fprintf ( stderr , \"\\\\n<S2SV_blank>ENC%d<S2SV_blank>PSNR<S2SV_blank>(Overall/Avg/Y/U/V)\" , i ) ; fprintf ( stderr , \"<S2SV_blank>%.3lf\" , ovpsnr ) ; for ( j = 0 ; j < 4 ; j ++ ) { fprintf ( stderr , \"<S2SV_blank>%.3lf\" , psnr_totals [ i ] [ j ] / psnr_count [ i ] ) ; } } if ( vpx_codec_destroy ( & codec [ i ] ) ) die_codec ( & codec [ i ] , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>codec\" ) ; vpx_img_free ( & raw [ i ] ) ; if ( ! outfile [ i ] ) continue ; if ( ! fseek ( outfile [ i ] , 0 , SEEK_SET ) ) write_ivf_file_header ( outfile [ i ] , & cfg [ i ] , frame_cnt - 1 ) ; fclose ( outfile [ i ] ) ; } printf ( \"\\\\n\" ) ; return EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NUM_ENCODERS ] ; FILE * downsampled_input [ NUM_ENCODERS - 1 ] ; char filename [ 50 ] ; <S2SV_ModStart> NUM_ENCODERS ] ; int <S2SV_ModEnd> frame_cnt = 0 <S2SV_ModStart> height ; int length_frame ; int <S2SV_ModStart> 0 ; int layer_id = 0 ; int layer_flags [ VPX_TS_MAX_PERIODICITY * NUM_ENCODERS ] = { 0 } ; int flag_periodicity ; int <S2SV_ModStart> = 0 ; int key_frame_insert = 0 ; <S2SV_ModStart> { 0 } ; double cx_time = 0 ; struct timeval tv1 , tv2 , difftv <S2SV_ModStart> } } ; unsigned int num_temporal_layers [ NUM_ENCODERS ] = { 3 , 3 , 3 } ; <S2SV_ModStart> argc != ( 7 + 3 * <S2SV_ModEnd> NUM_ENCODERS ) ) <S2SV_ModStart> ) die ( \"Usage:<S2SV_blank>%s<S2SV_blank><width><S2SV_blank><height><S2SV_blank><frame_rate><S2SV_blank><S2SV_blank><infile><S2SV_blank><outfile(s)><S2SV_blank>\" \"<rate_encoder(s)><S2SV_blank><temporal_layer(s)><S2SV_blank><key_frame_insert><S2SV_blank><output<S2SV_blank>psnr?><S2SV_blank>\\\\n\" <S2SV_ModEnd> , argv [ <S2SV_ModStart> argv [ 2 ] , NULL , 0 ) ; framerate = strtol ( argv [ 3 <S2SV_ModStart> ( argv [ 4 <S2SV_ModEnd> ] , \"rb\" <S2SV_ModStart> , argv [ 4 <S2SV_ModEnd> ] ) ; <S2SV_ModStart> [ i + 5 <S2SV_ModEnd> ] , \"wb\" <S2SV_ModStart> ) ; } for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { target_bitrate [ i ] <S2SV_ModEnd> = strtol ( <S2SV_ModStart> [ NUM_ENCODERS + 5 + i <S2SV_ModEnd> ] , NULL <S2SV_ModStart> 0 ) ; } <S2SV_ModStart> ++ ) { num_temporal_layers [ i ] = strtol ( argv [ 2 * NUM_ENCODERS + 5 + i ] , NULL , 0 ) ; if ( num_temporal_layers [ i ] < 1 || num_temporal_layers [ i ] > 3 ) die ( \"Invalid<S2SV_blank>temporal<S2SV_blank>layers:<S2SV_blank>%d,<S2SV_blank>Must<S2SV_blank>be<S2SV_blank>1,<S2SV_blank>2,<S2SV_blank>or<S2SV_blank>3.<S2SV_blank>\\\\n\" , num_temporal_layers ) ; } for ( i = 0 ; i < NUM_ENCODERS - 1 ; i ++ ) { if ( sprintf ( filename , \"ds%d.yuv\" , NUM_ENCODERS - i ) < 0 ) { <S2SV_ModEnd> return EXIT_FAILURE ; <S2SV_ModStart> EXIT_FAILURE ; } downsampled_input [ i ] = fopen ( filename , \"wb\" ) ; } key_frame_insert = strtol ( argv [ 3 * NUM_ENCODERS + 5 ] , NULL , 0 ) ; show_psnr = strtol ( argv [ 3 * NUM_ENCODERS + 6 ] , NULL , 0 ) ; for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { res [ i ] = vpx_codec_enc_config_default ( interface , & cfg [ i ] , 0 ) ; if ( res [ i ] ) { printf ( \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>config:<S2SV_blank>%s\\\\n\" , vpx_codec_err_to_string ( res [ i ] ) ) ; return EXIT_FAILURE ; } <S2SV_ModStart> 0 ] . rc_dropframe_thresh = 0 <S2SV_ModEnd> ; cfg [ <S2SV_ModStart> . rc_min_quantizer = 2 <S2SV_ModEnd> ; cfg [ <S2SV_ModStart> . rc_undershoot_pct = 100 <S2SV_ModEnd> ; cfg [ <S2SV_ModStart> . rc_overshoot_pct = 15 <S2SV_ModEnd> ; cfg [ <S2SV_ModStart> vpx_codec_enc_cfg_t ) ) <S2SV_ModEnd> ; cfg [ <S2SV_ModStart> ++ ; } cfg [ 0 ] . g_threads = 2 ; cfg [ 1 ] . g_threads = 1 ; cfg [ 2 ] . g_threads = 1 ; <S2SV_ModStart> 0 ) ; for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { set_temporal_layer_pattern ( num_temporal_layers [ i ] , & cfg [ i ] , cfg [ i ] . rc_target_bitrate , & layer_flags [ i * VPX_TS_MAX_PERIODICITY ] ) ; } <S2SV_ModStart> ; if ( i == NUM_ENCODERS - 1 ) speed = - 4 ; if ( <S2SV_ModStart> ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>cpu_used\" ) ; } for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { if ( vpx_codec_control ( & codec [ i ] , VP8E_SET_STATIC_THRESHOLD , 1 ) ) die_codec ( & codec [ i ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>static<S2SV_blank>threshold\" ) ; } if ( vpx_codec_control ( & codec [ 0 ] , VP8E_SET_NOISE_SENSITIVITY , 1 ) ) die_codec ( & codec [ 0 ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>noise_sensitivity\" ) ; for ( i = 1 ; i < NUM_ENCODERS ; i ++ ) { if ( vpx_codec_control ( & codec [ i ] , VP8E_SET_NOISE_SENSITIVITY , 0 ) ) die_codec ( & codec [ i ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>noise_sensitivity\" ) ; } for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { if ( vpx_codec_control ( & codec [ i ] , VP8E_SET_TOKEN_PARTITIONS , 1 ) ) die_codec ( & codec [ i ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>static<S2SV_blank>threshold\" <S2SV_ModStart> { unsigned int max_intra_size_pct = ( int ) ( ( ( double ) cfg [ 0 ] . rc_buf_optimal_sz * 0.5 ) * framerate / 10 ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> i ] , VP8E_SET_MAX_INTRA_BITRATE_PCT , max_intra_size_pct <S2SV_ModEnd> ) ) die_codec <S2SV_ModStart> ] , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>static<S2SV_blank>threshold\" <S2SV_ModEnd> ) ; } <S2SV_ModStart> 1 ) ; length_frame = cfg [ i ] . g_w * cfg [ i ] . g_h * 3 / 2 ; if ( fwrite ( raw [ i ] . planes [ 0 ] , 1 , length_frame , downsampled_input [ NUM_ENCODERS - i - 1 ] ) != length_frame ) { return EXIT_FAILURE ; } } } for ( i = 0 ; i < NUM_ENCODERS ; i ++ ) { layer_id = cfg [ i ] . ts_layer_id [ frame_cnt % cfg [ i ] . ts_periodicity ] ; flags = 0 ; flag_periodicity = periodicity_to_num_layers [ num_temporal_layers [ i ] - 1 ] ; flags = layer_flags [ i * VPX_TS_MAX_PERIODICITY + frame_cnt % flag_periodicity ] ; if ( frame_cnt == 0 ) { flags |= VPX_EFLAG_FORCE_KF ; } if ( frame_cnt > 0 && frame_cnt == key_frame_insert ) { flags = VPX_EFLAG_FORCE_KF ; } vpx_codec_control ( & codec [ i ] , VP8E_SET_FRAME_FLAGS , flags ) ; vpx_codec_control ( & codec [ i ] , VP8E_SET_TEMPORAL_LAYER_ID , layer_id ) ; } gettimeofday ( & tv1 , NULL ) ; <S2SV_ModEnd> if ( vpx_codec_encode <S2SV_ModStart> , 1 , 0 <S2SV_ModEnd> , arg_deadline ) <S2SV_ModStart> arg_deadline ) ) { <S2SV_ModStart> ] , \"Failed<S2SV_blank>to<S2SV_blank>encode<S2SV_blank>frame\" ) ; } gettimeofday ( & tv2 , NULL ) ; timersub ( & tv2 , & tv1 , & difftv ) ; cx_time += ( double ) ( difftv . tv_sec * 1000000 + difftv . tv_usec <S2SV_ModStart> ? \"K\" : \"\" <S2SV_ModEnd> ) ; fflush <S2SV_ModStart> printf ( \"\\\\n\" ) ; printf ( \"FPS<S2SV_blank>for<S2SV_blank>encoding<S2SV_blank>%d<S2SV_blank>%f<S2SV_blank>%f<S2SV_blank>\\\\n\" , frame_cnt , ( float ) cx_time / 1000000 , 1000000 * ( double ) frame_cnt / ( double ) cx_time\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8629\n\n```\nCWE-119 bool_t xdr_nullstring ( XDR * xdrs , char * * objp ) { u_int size ; if ( xdrs -> x_op == XDR_ENCODE ) { if ( * objp == NULL ) size = 0 ; else size = strlen ( * objp ) + 1 ; } if ( ! xdr_u_int ( xdrs , & size ) ) { return FALSE ; } switch ( xdrs -> x_op ) { case XDR_DECODE : if ( size == 0 ) { * objp = NULL ; return TRUE ; } else if ( * objp == NULL ) { * objp = ( char * ) mem_alloc ( size ) ; if ( * objp == NULL ) { errno = ENOMEM ; return FALSE ; } } <S2SV_StartBug> return ( xdr_opaque ( xdrs , * objp , size ) ) ; <S2SV_EndBug> case XDR_ENCODE : if ( size != 0 ) return ( xdr_opaque ( xdrs , * objp , size ) ) ; return TRUE ; case XDR_FREE : if ( * objp != NULL ) mem_free ( * objp , size ) ; * objp = NULL ; return TRUE ; } return FALSE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( ! <S2SV_ModEnd> xdr_opaque ( xdrs <S2SV_ModStart> size ) ) return FALSE ; if ( ( * objp ) [ size - 1 ] != '\\\\0' ) return FALSE ; if ( memchr ( * objp , '\\\\0' , size - 1 ) != NULL ) return FALSE ; return TRUE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6271\n\n```\nCWE-254 void test_parser ( void ) { <S2SV_StartBug> int i , retval ; <S2SV_EndBug> bzrtpPacket_t * zrtpPacket ; bzrtpContext_t * context87654321 = bzrtp_createBzrtpContext ( 0x87654321 ) ; bzrtpContext_t * context12345678 = bzrtp_createBzrtpContext ( 0x12345678 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> selfH [ 0 ] , H12345678 [ 0 ] , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> selfH [ 1 ] , H12345678 [ 1 ] , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> selfH [ 2 ] , H12345678 [ 2 ] , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> selfH [ 3 ] , H12345678 [ 3 ] , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> selfH [ 0 ] , H87654321 [ 0 ] , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> selfH [ 1 ] , H87654321 [ 1 ] , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> selfH [ 2 ] , H87654321 [ 2 ] , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> selfH [ 3 ] , H87654321 [ 3 ] , 32 ) ; context87654321 -> channelContext [ 0 ] -> keyAgreementAlgo = ZRTP_KEYAGREEMENT_DH3k ; context12345678 -> channelContext [ 0 ] -> keyAgreementAlgo = ZRTP_KEYAGREEMENT_DH3k ; context87654321 -> channelContext [ 0 ] -> cipherAlgo = ZRTP_CIPHER_AES1 ; context12345678 -> channelContext [ 0 ] -> cipherAlgo = ZRTP_CIPHER_AES1 ; context87654321 -> channelContext [ 0 ] -> hashAlgo = ZRTP_HASH_S256 ; context12345678 -> channelContext [ 0 ] -> hashAlgo = ZRTP_HASH_S256 ; updateCryptoFunctionPointers ( context87654321 -> channelContext [ 0 ] ) ; updateCryptoFunctionPointers ( context12345678 -> channelContext [ 0 ] ) ; context87654321 -> channelContext [ 0 ] -> mackeyi = ( uint8_t * ) malloc ( 32 ) ; context12345678 -> channelContext [ 0 ] -> mackeyi = ( uint8_t * ) malloc ( 32 ) ; context87654321 -> channelContext [ 0 ] -> mackeyr = ( uint8_t * ) malloc ( 32 ) ; context12345678 -> channelContext [ 0 ] -> mackeyr = ( uint8_t * ) malloc ( 32 ) ; context87654321 -> channelContext [ 0 ] -> zrtpkeyi = ( uint8_t * ) malloc ( 16 ) ; context12345678 -> channelContext [ 0 ] -> zrtpkeyi = ( uint8_t * ) malloc ( 16 ) ; context87654321 -> channelContext [ 0 ] -> zrtpkeyr = ( uint8_t * ) malloc ( 16 ) ; context12345678 -> channelContext [ 0 ] -> zrtpkeyr = ( uint8_t * ) malloc ( 16 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> mackeyi , mackeyi , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> mackeyr , mackeyr , 32 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> zrtpkeyi , zrtpkeyi , 16 ) ; memcpy ( context12345678 -> channelContext [ 0 ] -> zrtpkeyr , zrtpkeyr , 16 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> mackeyi , mackeyi , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> mackeyr , mackeyr , 32 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> zrtpkeyi , zrtpkeyi , 16 ) ; memcpy ( context87654321 -> channelContext [ 0 ] -> zrtpkeyr , zrtpkeyr , 16 ) ; context12345678 -> channelContext [ 0 ] -> role = RESPONDER ; for ( i = 0 ; i < TEST_PACKET_NUMBER ; i ++ ) { uint8_t freePacketFlag = 1 ; zrtpPacket = bzrtp_packetCheck ( patternZRTPPackets [ i ] , patternZRTPMetaData [ i ] [ 0 ] , ( patternZRTPMetaData [ i ] [ 1 ] ) - 1 , & retval ) ; retval += bzrtp_packetParser ( ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) ? context12345678 : context87654321 , ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) ? context12345678 -> channelContext [ 0 ] : context87654321 -> channelContext [ 0 ] , patternZRTPPackets [ i ] , patternZRTPMetaData [ i ] [ 0 ] , zrtpPacket ) ; if ( zrtpPacket -> messageType == MSGTYPE_HELLO ) { if ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) { context12345678 -> channelContext [ 0 ] -> peerPackets [ HELLO_MESSAGE_STORE_ID ] = zrtpPacket ; } else { context87654321 -> channelContext [ 0 ] -> peerPackets [ HELLO_MESSAGE_STORE_ID ] = zrtpPacket ; } freePacketFlag = 0 ; } if ( zrtpPacket -> messageType == MSGTYPE_COMMIT ) { if ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) { context12345678 -> channelContext [ 0 ] -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] = zrtpPacket ; } else { context87654321 -> channelContext [ 0 ] -> peerPackets [ COMMIT_MESSAGE_STORE_ID ] = zrtpPacket ; } freePacketFlag = 0 ; } if ( zrtpPacket -> messageType == MSGTYPE_DHPART1 || zrtpPacket -> messageType == MSGTYPE_DHPART2 ) { if ( patternZRTPMetaData [ i ] [ 2 ] == 0x87654321 ) { context12345678 -> channelContext [ 0 ] -> peerPackets [ DHPART_MESSAGE_STORE_ID ] = zrtpPacket ; } else { context87654321 -> channelContext [ 0 ] -> peerPackets [ DHPART_MESSAGE_STORE_ID ] = zrtpPacket ; } freePacketFlag = 0 ; } free ( zrtpPacket -> packetString ) ; retval = bzrtp_packetBuild ( ( patternZRTPMetaData [ i ] [ 2 ] == 0x12345678 ) ? context12345678 : context87654321 , ( patternZRTPMetaData [ i ] [ 2 ] == 0x12345678 ) ? context12345678 -> channelContext [ 0 ] : context87654321 -> channelContext [ 0 ] , zrtpPacket , patternZRTPMetaData [ i ] [ 1 ] ) ; if ( zrtpPacket -> packetString != NULL ) { CU_ASSERT_TRUE ( memcmp ( zrtpPacket -> packetString , patternZRTPPackets [ i ] , patternZRTPMetaData [ i ] [ 0 ] ) == 0 ) ; <S2SV_StartBug> } else { <S2SV_EndBug> CU_FAIL ( \"Unable<S2SV_blank>to<S2SV_blank>build<S2SV_blank>packet\" ) ; } if ( freePacketFlag == 1 ) { bzrtp_freeZrtpPacket ( zrtpPacket ) ; } } bzrtp_destroyBzrtpContext ( context87654321 , 0x87654321 ) ; bzrtp_destroyBzrtpContext ( context12345678 , 0x12345678 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void ) { test_parser_param ( <S2SV_ModEnd> 0 ) ; <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20182\n\n```\nCWE-119 static void process_secondary_order ( STREAM s ) { uint16 length ; uint16 flags ; uint8 type ; uint8 * next_order ; <S2SV_StartBug> in_uint16_le ( s , length ) ; <S2SV_EndBug> in_uint16_le ( s , flags ) ; <S2SV_StartBug> in_uint8 ( s , type ) ; <S2SV_EndBug> next_order = s -> p + ( sint16 ) length + 7 ; switch ( type ) { case RDP_ORDER_RAW_BMPCACHE : process_raw_bmpcache ( s ) ; break ; case RDP_ORDER_COLCACHE : process_colcache ( s ) ; break ; case RDP_ORDER_BMPCACHE : process_bmpcache ( s ) ; break ; case RDP_ORDER_FONTCACHE : process_fontcache ( s ) ; break ; case RDP_ORDER_RAW_BMPCACHE2 : process_bmpcache2 ( s , flags , False ) ; break ; case RDP_ORDER_BMPCACHE2 : process_bmpcache2 ( s , flags , True ) ; break ; case RDP_ORDER_BRUSHCACHE : process_brushcache ( s , flags ) ; break ; default : logger ( Graphics , Warning , \"process_secondary_order(),<S2SV_blank>unhandled<S2SV_blank>secondary<S2SV_blank>order<S2SV_blank>%d\" , type ) ; } s -> p = next_order ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * next_order ; struct stream packet = * s ; <S2SV_ModStart> type ) ; if ( ! s_check_rem ( s , length + 7 ) ) { rdp_protocol_error ( \"process_secondary_order(),<S2SV_blank>next<S2SV_blank>order<S2SV_blank>pointer<S2SV_blank>would<S2SV_blank>overrun<S2SV_blank>stream\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-13307\n\n```\nCWE-119 static PixelChannels * * AcquirePixelThreadSet ( const Image * images ) { const Image * next ; PixelChannels * * pixels ; register ssize_t i ; size_t columns , <S2SV_StartBug> number_threads ; <S2SV_EndBug> <S2SV_StartBug> number_threads = ( size_t ) GetMagickResourceLimit ( ThreadResource ) ; <S2SV_EndBug> <S2SV_StartBug> pixels = ( PixelChannels * * ) AcquireQuantumMemory ( number_threads , <S2SV_EndBug> sizeof ( * pixels ) ) ; if ( pixels == ( PixelChannels * * ) NULL ) return ( ( PixelChannels * * ) NULL ) ; <S2SV_StartBug> ( void ) memset ( pixels , 0 , number_threads * sizeof ( * pixels ) ) ; <S2SV_EndBug> columns = images -> columns ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) number_threads ; i ++ ) <S2SV_EndBug> { register ssize_t j ; pixels [ i ] = ( PixelChannels * ) AcquireQuantumMemory ( columns , sizeof ( * * pixels ) ) ; if ( pixels [ i ] == ( PixelChannels * ) NULL ) return ( DestroyPixelThreadSet ( pixels ) ) ; for ( j = 0 ; j < ( ssize_t ) columns ; j ++ ) { register ssize_t k ; for ( k = 0 ; k < MaxPixelChannels ; k ++ ) pixels [ i ] [ j ] . channel [ k ] = 0.0 ; } } return ( pixels ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t columns , rows ; rows = MagickMax ( GetImageListLength ( images ) , <S2SV_ModEnd> ( size_t ) <S2SV_ModStart> ( ThreadResource ) ) <S2SV_ModStart> ) AcquireQuantumMemory ( rows , <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> NULL ) ; columns = MaxPixelChannels ; for ( next = images ; next != ( Image * ) NULL ; next = next -> next ) columns = MagickMax ( next -> columns , columns ) ; for ( i = 0 <S2SV_ModEnd> ; i < <S2SV_ModStart> ( ssize_t ) rows <S2SV_ModEnd> ; i ++\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6937\n\n```\nCWE-000 static struct rds_connection * __rds_conn_create ( struct net * net , __be32 laddr , __be32 faddr , struct rds_transport * trans , gfp_t gfp , int is_outgoing ) { struct rds_connection * conn , * parent = NULL ; struct hlist_head * head = rds_conn_bucket ( laddr , faddr ) ; struct rds_transport * loop_trans ; unsigned long flags ; int ret ; struct rds_transport * otrans = trans ; if ( ! is_outgoing && otrans -> t_type == RDS_TRANS_TCP ) goto new_conn ; rcu_read_lock ( ) ; conn = rds_conn_lookup ( net , head , laddr , faddr , trans ) ; if ( conn && conn -> c_loopback && conn -> c_trans != & rds_loop_transport && laddr == faddr && ! is_outgoing ) { parent = conn ; conn = parent -> c_passive ; } rcu_read_unlock ( ) ; if ( conn ) goto out ; new_conn : conn = kmem_cache_zalloc ( rds_conn_slab , gfp ) ; if ( ! conn ) { conn = ERR_PTR ( - ENOMEM ) ; goto out ; } INIT_HLIST_NODE ( & conn -> c_hash_node ) ; conn -> c_laddr = laddr ; conn -> c_faddr = faddr ; spin_lock_init ( & conn -> c_lock ) ; conn -> c_next_tx_seq = 1 ; rds_conn_net_set ( conn , net ) ; init_waitqueue_head ( & conn -> c_waitq ) ; INIT_LIST_HEAD ( & conn -> c_send_queue ) ; INIT_LIST_HEAD ( & conn -> c_retrans ) ; ret = rds_cong_get_maps ( conn ) ; if ( ret ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( ret ) ; goto out ; } loop_trans = rds_trans_get_preferred ( net , faddr ) ; if ( loop_trans ) { rds_trans_put ( loop_trans ) ; conn -> c_loopback = 1 ; if ( is_outgoing && trans -> t_prefer_loopback ) { trans = & rds_loop_transport ; } } <S2SV_StartBug> conn -> c_trans = trans ; <S2SV_EndBug> ret = trans -> conn_alloc ( conn , gfp ) ; if ( ret ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( ret ) ; goto out ; } atomic_set ( & conn -> c_state , RDS_CONN_DOWN ) ; conn -> c_send_gen = 0 ; conn -> c_reconnect_jiffies = 0 ; INIT_DELAYED_WORK ( & conn -> c_send_w , rds_send_worker ) ; INIT_DELAYED_WORK ( & conn -> c_recv_w , rds_recv_worker ) ; INIT_DELAYED_WORK ( & conn -> c_conn_w , rds_connect_worker ) ; INIT_WORK ( & conn -> c_down_w , rds_shutdown_worker ) ; mutex_init ( & conn -> c_cm_lock ) ; conn -> c_flags = 0 ; rdsdebug ( \"allocated<S2SV_blank>conn<S2SV_blank>%p<S2SV_blank>for<S2SV_blank>%pI4<S2SV_blank>-><S2SV_blank>%pI4<S2SV_blank>over<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , conn , & laddr , & faddr , trans -> t_name ? trans -> t_name : \"[unknown]\" , is_outgoing ? \"(outgoing)\" : \"\" ) ; spin_lock_irqsave ( & rds_conn_lock , flags ) ; if ( parent ) { if ( parent -> c_passive ) { trans -> conn_free ( conn -> c_transport_data ) ; kmem_cache_free ( rds_conn_slab , conn ) ; conn = parent -> c_passive ; } else { parent -> c_passive = conn ; rds_cong_add_conn ( conn ) ; rds_conn_count ++ ; } } else { struct rds_connection * found ; if ( ! is_outgoing && otrans -> t_type == RDS_TRANS_TCP ) found = NULL ; else found = rds_conn_lookup ( net , head , laddr , faddr , trans ) ; if ( found ) { trans -> conn_free ( conn -> c_transport_data ) ; kmem_cache_free ( rds_conn_slab , conn ) ; conn = found ; } else { if ( ( is_outgoing && otrans -> t_type == RDS_TRANS_TCP ) || ( otrans -> t_type != RDS_TRANS_TCP ) ) { hlist_add_head_rcu ( & conn -> c_hash_node , head ) ; } rds_cong_add_conn ( conn ) ; rds_conn_count ++ ; } } spin_unlock_irqrestore ( & rds_conn_lock , flags ) ; out : return conn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } if ( trans == NULL ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( - ENODEV ) ; goto out ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15857\n\n```\nCWE-416 ExprDef * ExprAppendMultiKeysymList ( ExprDef * expr , ExprDef * append ) { unsigned nSyms = darray_size ( expr -> keysym_list . syms ) ; unsigned numEntries = darray_size ( append -> keysym_list . syms ) ; darray_append ( expr -> keysym_list . symsMapIndex , nSyms ) ; darray_append ( expr -> keysym_list . symsNumEntries , numEntries ) ; darray_concat ( expr -> keysym_list . syms , append -> keysym_list . syms ) ; <S2SV_StartBug> FreeStmt ( ( ParseCommon * ) & append ) ; <S2SV_EndBug> return expr ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ParseCommon * ) <S2SV_ModEnd> append ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13041\n\n```\nCWE-125 static void icmp6_nodeinfo_print ( netdissect_options * ndo , u_int icmp6len , const u_char * bp , const u_char * ep ) { const struct icmp6_nodeinfo * ni6 ; const struct icmp6_hdr * dp ; const u_char * cp ; size_t siz , i ; int needcomma ; if ( ep < bp ) return ; dp = ( const struct icmp6_hdr * ) bp ; ni6 = ( const struct icmp6_nodeinfo * ) bp ; siz = ep - bp ; switch ( ni6 -> ni_type ) { case ICMP6_NI_QUERY : if ( siz == sizeof ( * dp ) + 4 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>who-are-you<S2SV_blank>request\" ) ) ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>node<S2SV_blank>information<S2SV_blank>query\" ) ) ; ND_TCHECK2 ( * dp , sizeof ( * ni6 ) ) ; ni6 = ( const struct icmp6_nodeinfo * ) dp ; ND_PRINT ( ( ndo , \"<S2SV_blank>(\" ) ) ; switch ( EXTRACT_16BITS ( & ni6 -> ni_qtype ) ) { case NI_QTYPE_NOOP : ND_PRINT ( ( ndo , \"noop\" ) ) ; break ; case NI_QTYPE_SUPTYPES : ND_PRINT ( ( ndo , \"supported<S2SV_blank>qtypes\" ) ) ; i = EXTRACT_16BITS ( & ni6 -> ni_flags ) ; if ( i ) ND_PRINT ( ( ndo , \"<S2SV_blank>[%s]\" , ( i & 0x01 ) ? \"C\" : \"\" ) ) ; break ; case NI_QTYPE_FQDN : ND_PRINT ( ( ndo , \"DNS<S2SV_blank>name\" ) ) ; break ; case NI_QTYPE_NODEADDR : ND_PRINT ( ( ndo , \"node<S2SV_blank>addresses\" ) ) ; i = ni6 -> ni_flags ; if ( ! i ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>[%s%s%s%s%s%s]\" , ( i & NI_NODEADDR_FLAG_ANYCAST ) ? \"a\" : \"\" , ( i & NI_NODEADDR_FLAG_GLOBAL ) ? \"G\" : \"\" , ( i & NI_NODEADDR_FLAG_SITELOCAL ) ? \"S\" : \"\" , ( i & NI_NODEADDR_FLAG_LINKLOCAL ) ? \"L\" : \"\" , ( i & NI_NODEADDR_FLAG_COMPAT ) ? \"C\" : \"\" , ( i & NI_NODEADDR_FLAG_ALL ) ? \"A\" : \"\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"unknown\" ) ) ; break ; } if ( ni6 -> ni_qtype == NI_QTYPE_NOOP || ni6 -> ni_qtype == NI_QTYPE_SUPTYPES ) { if ( siz != sizeof ( * ni6 ) ) if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>len\" ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; } if ( siz == sizeof ( * ni6 ) ) { ND_PRINT ( ( ndo , \",<S2SV_blank>03<S2SV_blank>draft\" ) ) ; ND_PRINT ( ( ndo , \")\" ) ) ; break ; } switch ( ni6 -> ni_code ) { case ICMP6_NI_SUBJ_IPV6 : if ( ! ND_TTEST2 ( * dp , sizeof ( * ni6 ) + sizeof ( struct in6_addr ) ) ) break ; if ( siz != sizeof ( * ni6 ) + sizeof ( struct in6_addr ) ) { if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>subject<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \",<S2SV_blank>subject=%s\" , ip6addr_string ( ndo , ni6 + 1 ) ) ) ; break ; case ICMP6_NI_SUBJ_FQDN : ND_PRINT ( ( ndo , \",<S2SV_blank>subject=DNS<S2SV_blank>name\" ) ) ; cp = ( const u_char * ) ( ni6 + 1 ) ; if ( cp [ 0 ] == ep - cp - 1 ) { if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>03<S2SV_blank>draft\" ) ) ; cp ++ ; ND_PRINT ( ( ndo , \",<S2SV_blank>\\\\\"\" ) ) ; while ( cp < ep ) { safeputchar ( ndo , * cp ) ; cp ++ ; } ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } else dnsname_print ( ndo , cp , ep ) ; break ; case ICMP6_NI_SUBJ_IPV4 : if ( ! ND_TTEST2 ( * dp , sizeof ( * ni6 ) + sizeof ( struct in_addr ) ) ) break ; if ( siz != sizeof ( * ni6 ) + sizeof ( struct in_addr ) ) { if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>subject<S2SV_blank>len\" ) ) ; break ; } ND_PRINT ( ( ndo , \",<S2SV_blank>subject=%s\" , ipaddr_string ( ndo , ni6 + 1 ) ) ) ; break ; default : ND_PRINT ( ( ndo , \",<S2SV_blank>unknown<S2SV_blank>subject\" ) ) ; break ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; case ICMP6_NI_REPLY : if ( icmp6len > siz ) { ND_PRINT ( ( ndo , \"[|icmp6:<S2SV_blank>node<S2SV_blank>information<S2SV_blank>reply]\" ) ) ; break ; } needcomma = 0 ; <S2SV_StartBug> ni6 = ( const struct icmp6_nodeinfo * ) dp ; <S2SV_EndBug> ND_PRINT ( ( ndo , \"<S2SV_blank>node<S2SV_blank>information<S2SV_blank>reply\" ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>(\" ) ) ; switch ( ni6 -> ni_code ) { case ICMP6_NI_SUCCESS : if ( ndo -> ndo_vflag ) { ND_PRINT ( ( ndo , \"success\" ) ) ; needcomma ++ ; } break ; case ICMP6_NI_REFUSED : ND_PRINT ( ( ndo , \"refused\" ) ) ; needcomma ++ ; if ( siz != sizeof ( * ni6 ) ) if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>length\" ) ) ; break ; case ICMP6_NI_UNKNOWN : ND_PRINT ( ( ndo , \"unknown\" ) ) ; needcomma ++ ; if ( siz != sizeof ( * ni6 ) ) if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>length\" ) ) ; break ; } if ( ni6 -> ni_code != ICMP6_NI_SUCCESS ) { ND_PRINT ( ( ndo , \")\" ) ) ; break ; } switch ( EXTRACT_16BITS ( & ni6 -> ni_qtype ) ) { case NI_QTYPE_NOOP : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"noop\" ) ) ; if ( siz != sizeof ( * ni6 ) ) if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>invalid<S2SV_blank>length\" ) ) ; break ; case NI_QTYPE_SUPTYPES : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"supported<S2SV_blank>qtypes\" ) ) ; i = EXTRACT_16BITS ( & ni6 -> ni_flags ) ; if ( i ) ND_PRINT ( ( ndo , \"<S2SV_blank>[%s]\" , ( i & 0x01 ) ? \"C\" : \"\" ) ) ; break ; case NI_QTYPE_FQDN : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"DNS<S2SV_blank>name\" ) ) ; <S2SV_StartBug> cp = ( const u_char * ) ( ni6 + 1 ) + 4 ; <S2SV_EndBug> if ( cp [ 0 ] == ep - cp - 1 ) { if ( ndo -> ndo_vflag ) ND_PRINT ( ( ndo , \",<S2SV_blank>03<S2SV_blank>draft\" ) ) ; cp ++ ; ND_PRINT ( ( ndo , \",<S2SV_blank>\\\\\"\" ) ) ; while ( cp < ep ) { safeputchar ( ndo , * cp ) ; cp ++ ; } ND_PRINT ( ( ndo , \"\\\\\"\" ) ) ; } else dnsname_print ( ndo , cp , ep ) ; if ( ( EXTRACT_16BITS ( & ni6 -> ni_flags ) & 0x01 ) != 0 ) ND_PRINT ( ( ndo , \"<S2SV_blank>[TTL=%u]\" , EXTRACT_32BITS ( ni6 + 1 ) ) ) ; break ; case NI_QTYPE_NODEADDR : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"node<S2SV_blank>addresses\" ) ) ; i = sizeof ( * ni6 ) ; while ( i < siz ) { if ( i + sizeof ( struct in6_addr ) + sizeof ( int32_t ) > siz ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ip6addr_string ( ndo , bp + i ) ) ) ; i += sizeof ( struct in6_addr ) ; ND_PRINT ( ( ndo , \"(%d)\" , ( int32_t ) EXTRACT_32BITS ( bp + i ) ) ) ; i += sizeof ( int32_t ) ; } i = ni6 -> ni_flags ; if ( ! i ) break ; ND_PRINT ( ( ndo , \"<S2SV_blank>[%s%s%s%s%s%s%s]\" , ( i & NI_NODEADDR_FLAG_ANYCAST ) ? \"a\" : \"\" , ( i & NI_NODEADDR_FLAG_GLOBAL ) ? \"G\" : \"\" , ( i & NI_NODEADDR_FLAG_SITELOCAL ) ? \"S\" : \"\" , ( i & NI_NODEADDR_FLAG_LINKLOCAL ) ? \"L\" : \"\" , ( i & NI_NODEADDR_FLAG_COMPAT ) ? \"C\" : \"\" , ( i & NI_NODEADDR_FLAG_ALL ) ? \"A\" : \"\" , ( i & NI_NODEADDR_FLAG_TRUNCATE ) ? \"T\" : \"\" ) ) ; break ; default : if ( needcomma ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; ND_PRINT ( ( ndo , \"unknown\" ) ) ; break ; } ND_PRINT ( ( ndo , \")\" ) ) ; break ; } return ; trunc : ND_PRINT ( ( ndo , \"[|icmp6]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; ND_TCHECK2 ( * dp , sizeof ( * ni6 ) ) ; <S2SV_ModStart> ) + 4 ; ND_TCHECK ( cp [ 0 ] )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20406\n\n```\nCWE-190 static int Unpickler_set_memo ( UnpicklerObject * self , PyObject * obj ) { PyObject * * new_memo ; <S2SV_StartBug> Py_ssize_t new_memo_size = 0 ; <S2SV_EndBug> Py_ssize_t i ; if ( obj == NULL ) { PyErr_SetString ( PyExc_TypeError , \"attribute<S2SV_blank>deletion<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported\" ) ; return - 1 ; } if ( Py_TYPE ( obj ) == & UnpicklerMemoProxyType ) { UnpicklerObject * unpickler = ( ( UnpicklerMemoProxyObject * ) obj ) -> unpickler ; new_memo_size = unpickler -> memo_size ; new_memo = _Unpickler_NewMemo ( new_memo_size ) ; if ( new_memo == NULL ) return - 1 ; <S2SV_StartBug> for ( i = 0 ; i < new_memo_size ; i ++ ) { <S2SV_EndBug> Py_XINCREF ( unpickler -> memo [ i ] ) ; new_memo [ i ] = unpickler -> memo [ i ] ; } } else if ( PyDict_Check ( obj ) ) { Py_ssize_t i = 0 ; PyObject * key , * value ; new_memo_size = PyDict_GET_SIZE ( obj ) ; new_memo = _Unpickler_NewMemo ( new_memo_size ) ; if ( new_memo == NULL ) return - 1 ; while ( PyDict_Next ( obj , & i , & key , & value ) ) { Py_ssize_t idx ; if ( ! PyLong_Check ( key ) ) { PyErr_SetString ( PyExc_TypeError , \"memo<S2SV_blank>key<S2SV_blank>must<S2SV_blank>be<S2SV_blank>integers\" ) ; goto error ; } idx = PyLong_AsSsize_t ( key ) ; if ( idx == - 1 && PyErr_Occurred ( ) ) goto error ; if ( idx < 0 ) { PyErr_SetString ( PyExc_ValueError , \"memo<S2SV_blank>key<S2SV_blank>must<S2SV_blank>be<S2SV_blank>positive<S2SV_blank>integers.\" ) ; goto error ; } if ( _Unpickler_MemoPut ( self , idx , value ) < 0 ) goto error ; } } else { PyErr_Format ( PyExc_TypeError , \"\\'memo\\'<S2SV_blank>attribute<S2SV_blank>must<S2SV_blank>be<S2SV_blank>an<S2SV_blank>UnpicklerMemoProxy<S2SV_blank>object\" \"or<S2SV_blank>dict,<S2SV_blank>not<S2SV_blank>%.200s\" , Py_TYPE ( obj ) -> tp_name ) ; return - 1 ; } _Unpickler_MemoCleanup ( self ) ; self -> memo_size = new_memo_size ; self -> memo = new_memo ; return 0 ; error : if ( new_memo_size ) { <S2SV_StartBug> i = new_memo_size ; <S2SV_EndBug> while ( -- i >= 0 ) { Py_XDECREF ( new_memo [ i ] ) ; } PyMem_FREE ( new_memo ) ; } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * new_memo ; size_t new_memo_size = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; for ( size_t <S2SV_ModStart> new_memo_size ) { for ( size_t i = new_memo_size - 1 ; i != SIZE_MAX ; i -- <S2SV_ModEnd> ) { Py_XDECREF\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15090\n\n```\nCWE-125 void qedi_dbg_warn ( struct qedi_dbg_ctx * qedi , const char * func , u32 line , const char * fmt , ... ) { va_list va ; <S2SV_StartBug> struct va_format vaf ; <S2SV_EndBug> char nfunc [ 32 ] ; memset ( nfunc , 0 , sizeof ( nfunc ) ) ; memcpy ( nfunc , func , sizeof ( nfunc ) - 1 ) ; va_start ( va , fmt ) ; vaf . fmt = fmt ; vaf . va = & va ; if ( ! ( qedi_dbg_log & QEDI_LOG_WARN ) ) goto ret ; if ( likely ( qedi ) && likely ( qedi -> pdev ) ) pr_warn ( \"[%s]:[%s:%d]:%d:<S2SV_blank>%pV\" , dev_name ( & qedi -> pdev -> dev ) , <S2SV_StartBug> nfunc , line , qedi -> host_no , & vaf ) ; <S2SV_EndBug> else <S2SV_StartBug> pr_warn ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , nfunc , line , & vaf ) ; <S2SV_EndBug> ret : va_end ( va ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct va_format vaf <S2SV_ModEnd> ; va_start ( <S2SV_ModStart> dev ) , func <S2SV_ModEnd> , line , <S2SV_ModStart> ( \"[0000:00:00.0]:[%s:%d]:<S2SV_blank>%pV\" , func <S2SV_ModEnd> , line ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 static int send_parameters ( struct iperf_test * test ) { int r = 0 ; cJSON * j ; j = cJSON_CreateObject ( ) ; if ( j == NULL ) { i_errno = IESENDPARAMS ; r = - 1 ; } else { if ( test -> protocol -> id == Ptcp ) cJSON_AddTrueToObject ( j , \"tcp\" ) ; else if ( test -> protocol -> id == Pudp ) cJSON_AddTrueToObject ( j , \"udp\" ) ; <S2SV_StartBug> cJSON_AddIntToObject ( j , \"omit\" , test -> omit ) ; <S2SV_EndBug> if ( test -> server_affinity != - 1 ) <S2SV_StartBug> cJSON_AddIntToObject ( j , \"server_affinity\" , test -> server_affinity ) ; <S2SV_EndBug> if ( test -> duration ) cJSON_AddIntToObject ( j , \"time\" , test -> duration ) ; if ( test -> settings -> bytes ) cJSON_AddIntToObject ( j , \"num\" , test -> settings -> bytes ) ; if ( test -> settings -> blocks ) cJSON_AddIntToObject ( j , \"blockcount\" , test -> settings -> blocks ) ; if ( test -> settings -> mss ) cJSON_AddIntToObject ( j , \"MSS\" , test -> settings -> mss ) ; if ( test -> no_delay ) cJSON_AddTrueToObject ( j , \"nodelay\" ) ; cJSON_AddIntToObject ( j , \"parallel\" , test -> num_streams ) ; if ( test -> reverse ) cJSON_AddTrueToObject ( j , \"reverse\" ) ; if ( test -> settings -> socket_bufsize ) cJSON_AddIntToObject ( j , \"window\" , test -> settings -> socket_bufsize ) ; if ( test -> settings -> blksize ) cJSON_AddIntToObject ( j , \"len\" , test -> settings -> blksize ) ; if ( test -> settings -> rate ) cJSON_AddIntToObject ( j , \"bandwidth\" , test -> settings -> rate ) ; if ( test -> settings -> burst ) cJSON_AddIntToObject ( j , \"burst\" , test -> settings -> burst ) ; if ( test -> settings -> tos ) cJSON_AddIntToObject ( j , \"TOS\" , test -> settings -> tos ) ; if ( test -> settings -> flowlabel ) cJSON_AddIntToObject ( j , \"flowlabel\" , test -> settings -> flowlabel ) ; if ( test -> title ) <S2SV_StartBug> cJSON_AddStringToObject ( j , \"title\" , test -> title ) ; <S2SV_EndBug> if ( test -> congestion ) cJSON_AddStringToObject ( j , \"congestion\" , test -> congestion ) ; if ( test -> get_server_output ) cJSON_AddIntToObject ( j , \"get_server_output\" , iperf_get_test_get_server_output ( test ) ) ; if ( test -> debug ) { printf ( \"send_parameters:\\\\n%s\\\\n\" , cJSON_Print ( j ) ) ; } if ( JSON_write ( test -> ctrl_sck , j ) < 0 ) { i_errno = IESENDPARAMS ; r = - 1 ; } cJSON_Delete ( j ) ; } return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"udp\" ) ; cJSON_AddNumberToObject <S2SV_ModEnd> ( j , <S2SV_ModStart> - 1 ) cJSON_AddNumberToObject ( j , \"server_affinity\" , test -> server_affinity ) ; if ( test -> duration ) cJSON_AddNumberToObject ( j , \"time\" , test -> duration ) ; if ( test -> settings -> bytes ) cJSON_AddNumberToObject ( j , \"num\" , test -> settings -> bytes ) ; if ( test -> settings -> blocks ) cJSON_AddNumberToObject ( j , \"blockcount\" , test -> settings -> blocks ) ; if ( test -> settings -> mss ) cJSON_AddNumberToObject ( j , \"MSS\" , test -> settings -> mss ) ; if ( test -> no_delay ) cJSON_AddTrueToObject ( j , \"nodelay\" ) ; cJSON_AddNumberToObject ( j , \"parallel\" , test -> num_streams ) ; if ( test -> reverse ) cJSON_AddTrueToObject ( j , \"reverse\" ) ; if ( test -> settings -> socket_bufsize ) cJSON_AddNumberToObject ( j , \"window\" , test -> settings -> socket_bufsize ) ; if ( test -> settings -> blksize ) cJSON_AddNumberToObject ( j , \"len\" , test -> settings -> blksize ) ; if ( test -> settings -> rate ) cJSON_AddNumberToObject ( j , \"bandwidth\" , test -> settings -> rate ) ; if ( test -> settings -> burst ) cJSON_AddNumberToObject ( j , \"burst\" , test -> settings -> burst ) ; if ( test -> settings -> tos ) cJSON_AddNumberToObject ( j , \"TOS\" , test -> settings -> tos ) ; if ( test -> settings -> flowlabel ) cJSON_AddNumberToObject ( j , \"flowlabel\" , test -> settings -> flowlabel ) ; if ( test -> title ) cJSON_AddStringToObject ( j , \"title\" , test -> title ) ; if ( test -> congestion ) cJSON_AddStringToObject ( j , \"congestion\" , test -> congestion ) ; if ( test -> get_server_output ) << << << < HEAD <S2SV_ModStart> ( j , \"get_server_output\" , iperf_get_test_get_server_output ( test ) ) ; == == == = cJSON_AddNumberToObject ( j , \"get_server_output\" , iperf_get_test_get_server_output ( test ) ) ; if ( test -> udp_counters_64bit ) cJSON_AddNumberToObject ( j , \"udp_counters_64bit\" , iperf_get_test_udp_counters_64bit ( test ) ) ; if ( test -> no_fq_socket_pacing ) cJSON_AddNumberToObject ( j , \"no_fq_socket_pacing\" , iperf_get_no_fq_socket_pacing ( test ) ) ; <S2SV_ModEnd> cJSON_AddStringToObject ( j <S2SV_ModStart> ( j , \"client_version\" , IPERF_VERSION ) ; >> >> >> > ed94082 ... Fix a buffer overflow / heap corruption issue that could occur if a <S2SV_ModEnd> if ( test\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2548\n\n```\nCWE-20 static int snd_timer_start_slave ( struct snd_timer_instance * timeri ) { unsigned long flags ; spin_lock_irqsave ( & slave_active_lock , flags ) ; timeri -> flags |= SNDRV_TIMER_IFLG_RUNNING ; <S2SV_StartBug> if ( timeri -> master ) <S2SV_EndBug> list_add_tail ( & timeri -> active_list , & timeri -> master -> slave_active_head ) ; <S2SV_StartBug> spin_unlock_irqrestore ( & slave_active_lock , flags ) ; <S2SV_EndBug> return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> timeri -> master && timeri -> timer ) { spin_lock ( & timeri -> timer -> lock ) ; <S2SV_ModEnd> list_add_tail ( & <S2SV_ModStart> slave_active_head ) ; spin_unlock ( & timeri -> timer -> lock ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-1000380\n\n```\nCWE-200 static ssize_t snd_timer_user_read ( struct file * file , char __user * buffer , size_t count , loff_t * offset ) { struct snd_timer_user * tu ; long result = 0 , unit ; int qhead ; int err = 0 ; tu = file -> private_data ; unit = tu -> tread ? sizeof ( struct snd_timer_tread ) : sizeof ( struct snd_timer_read ) ; <S2SV_StartBug> spin_lock_irq ( & tu -> qlock ) ; <S2SV_EndBug> while ( ( long ) count - result >= unit ) { while ( ! tu -> qused ) { wait_queue_t wait ; if ( ( file -> f_flags & O_NONBLOCK ) != 0 || result > 0 ) { err = - EAGAIN ; goto _error ; } set_current_state ( TASK_INTERRUPTIBLE ) ; init_waitqueue_entry ( & wait , current ) ; add_wait_queue ( & tu -> qchange_sleep , & wait ) ; spin_unlock_irq ( & tu -> qlock ) ; <S2SV_StartBug> schedule ( ) ; <S2SV_EndBug> spin_lock_irq ( & tu -> qlock ) ; remove_wait_queue ( & tu -> qchange_sleep , & wait ) ; if ( tu -> disconnected ) { err = - ENODEV ; goto _error ; } if ( signal_pending ( current ) ) { err = - ERESTARTSYS ; goto _error ; } } qhead = tu -> qhead ++ ; tu -> qhead %= tu -> queue_size ; tu -> qused -- ; spin_unlock_irq ( & tu -> qlock ) ; <S2SV_StartBug> mutex_lock ( & tu -> ioctl_lock ) ; <S2SV_EndBug> if ( tu -> tread ) { if ( copy_to_user ( buffer , & tu -> tqueue [ qhead ] , sizeof ( struct snd_timer_tread ) ) ) err = - EFAULT ; } else { if ( copy_to_user ( buffer , & tu -> queue [ qhead ] , sizeof ( struct snd_timer_read ) ) ) err = - EFAULT ; } <S2SV_StartBug> mutex_unlock ( & tu -> ioctl_lock ) ; <S2SV_EndBug> spin_lock_irq ( & tu -> qlock ) ; if ( err < 0 ) goto _error ; result += unit ; buffer += unit ; } _error : spin_unlock_irq ( & tu -> qlock ) ; <S2SV_StartBug> return result > 0 ? result : err ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> snd_timer_read ) ; mutex_lock ( & tu -> ioctl_lock ) ; <S2SV_ModStart> qlock ) ; mutex_unlock ( & tu -> ioctl_lock ) ; schedule ( ) ; mutex_lock ( & tu -> ioctl_lock <S2SV_ModEnd> ) ; spin_lock_irq <S2SV_ModStart> qlock ) ; <S2SV_ModEnd> if ( tu <S2SV_ModStart> EFAULT ; } <S2SV_ModEnd> spin_lock_irq ( & <S2SV_ModStart> qlock ) ; mutex_unlock ( & tu -> ioctl_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2893\n\n```\nCWE-399 xmlAttrPtr xsltAttrTemplateProcess ( xsltTransformContextPtr ctxt , xmlNodePtr target , xmlAttrPtr attr ) { const xmlChar * value ; xmlAttrPtr ret ; if ( ( ctxt == NULL ) || ( attr == NULL ) || ( target == NULL ) ) return ( NULL ) ; if ( attr -> type != XML_ATTRIBUTE_NODE ) return ( NULL ) ; # ifdef XSLT_REFACTORED if ( attr -> psvi == xsltXSLTAttrMarker ) return ( NULL ) ; # else if ( ( attr -> ns != NULL ) && xmlStrEqual ( attr -> ns -> href , XSLT_NAMESPACE ) ) return ( NULL ) ; # endif if ( attr -> children != NULL ) { if ( ( attr -> children -> type != XML_TEXT_NODE ) || ( attr -> children -> next != NULL ) ) { xsltTransformError ( ctxt , NULL , attr -> parent , \"Internal<S2SV_blank>error:<S2SV_blank>The<S2SV_blank>children<S2SV_blank>of<S2SV_blank>an<S2SV_blank>attribute<S2SV_blank>node<S2SV_blank>of<S2SV_blank>a<S2SV_blank>\" \"literal<S2SV_blank>result<S2SV_blank>element<S2SV_blank>are<S2SV_blank>not<S2SV_blank>in<S2SV_blank>the<S2SV_blank>expected<S2SV_blank>form.\\\\n\" ) ; return ( NULL ) ; } value = attr -> children -> content ; if ( value == NULL ) value = xmlDictLookup ( ctxt -> dict , BAD_CAST \"\" , 0 ) ; } else value = xmlDictLookup ( ctxt -> dict , BAD_CAST \"\" , 0 ) ; ret = target -> properties ; while ( ret != NULL ) { if ( ( ( attr -> ns != NULL ) == ( ret -> ns != NULL ) ) && xmlStrEqual ( ret -> name , attr -> name ) && ( ( attr -> ns == NULL ) || xmlStrEqual ( ret -> ns -> href , attr -> ns -> href ) ) ) { break ; } ret = ret -> next ; } if ( ret != NULL ) { xmlFreeNodeList ( ret -> children ) ; ret -> children = ret -> last = NULL ; if ( ( ret -> ns != NULL ) && ( ! xmlStrEqual ( ret -> ns -> prefix , attr -> ns -> prefix ) ) ) { ret -> ns = xsltGetNamespace ( ctxt , attr -> parent , attr -> ns , target ) ; } } else { if ( attr -> ns != NULL ) ret = xmlNewNsProp ( target , xsltGetNamespace ( ctxt , attr -> parent , attr -> ns , target ) , attr -> name , NULL ) ; else ret = xmlNewNsProp ( target , NULL , attr -> name , NULL ) ; } if ( ret != NULL ) { xmlNodePtr text ; text = xmlNewText ( NULL ) ; if ( text != NULL ) { ret -> last = ret -> children = text ; text -> parent = ( xmlNodePtr ) ret ; text -> doc = ret -> doc ; if ( attr -> psvi != NULL ) { xmlChar * val ; val = xsltEvalAVT ( ctxt , attr -> psvi , attr -> parent ) ; if ( val == NULL ) { if ( attr -> ns ) { xsltTransformError ( ctxt , NULL , attr -> parent , \"Internal<S2SV_blank>error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>evaluate<S2SV_blank>the<S2SV_blank>AVT<S2SV_blank>\" \"of<S2SV_blank>attribute<S2SV_blank>\\'{%s}%s\\'.\\\\n\" , attr -> ns -> href , attr -> name ) ; } else { xsltTransformError ( ctxt , NULL , attr -> parent , \"Internal<S2SV_blank>error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>evaluate<S2SV_blank>the<S2SV_blank>AVT<S2SV_blank>\" \"of<S2SV_blank>attribute<S2SV_blank>\\'%s\\'.\\\\n\" , attr -> name ) ; } text -> content = xmlStrdup ( BAD_CAST \"\" ) ; } else { text -> content = val ; } } else if ( ( ctxt -> internalized ) && ( target != NULL ) && ( target -> doc != NULL ) && <S2SV_StartBug> ( target -> doc -> dict == ctxt -> dict ) ) { <S2SV_EndBug> text -> content = ( xmlChar * ) value ; } else { text -> content = xmlStrdup ( value ) ; } } } else { if ( attr -> ns ) { xsltTransformError ( ctxt , NULL , attr -> parent , \"Internal<S2SV_blank>error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>attribute<S2SV_blank>\\'{%s}%s\\'.\\\\n\" , attr -> ns -> href , attr -> name ) ; } else { xsltTransformError ( ctxt , NULL , attr -> parent , \"Internal<S2SV_blank>error:<S2SV_blank>Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>attribute<S2SV_blank>\\'%s\\'.\\\\n\" , attr -> name ) ; } } return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> dict ) && xmlDictOwns ( ctxt -> dict , value )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 bool btsock_thread_remove_fd_and_close ( int thread_handle , int fd ) { if ( thread_handle < 0 || thread_handle >= MAX_THREAD ) { APPL_TRACE_ERROR ( \"%s<S2SV_blank>invalid<S2SV_blank>thread<S2SV_blank>handle:<S2SV_blank>%d\" , __func__ , thread_handle ) ; return false ; } if ( fd == - 1 ) { APPL_TRACE_ERROR ( \"%s<S2SV_blank>invalid<S2SV_blank>file<S2SV_blank>descriptor.\" , __func__ ) ; return false ; } sock_cmd_t cmd = { CMD_REMOVE_FD , fd , 0 , 0 , 0 } ; <S2SV_StartBug> return send ( ts [ thread_handle ] . cmd_fdw , & cmd , sizeof ( cmd ) , 0 ) == sizeof ( cmd ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } ; return TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12232\n\n```\nCWE-362 void sock_release ( struct socket * sock ) { <S2SV_StartBug> if ( sock -> ops ) { <S2SV_EndBug> struct module * owner = sock -> ops -> owner ; sock -> ops -> release ( sock ) ; sock -> ops = NULL ; module_put ( owner ) ; } <S2SV_StartBug> if ( rcu_dereference_protected ( sock -> wq , 1 ) -> fasync_list ) <S2SV_EndBug> pr_err ( \"%s:<S2SV_blank>fasync<S2SV_blank>list<S2SV_blank>not<S2SV_blank>empty!\\\\n\" , __func__ ) ; if ( ! sock -> file ) { iput ( SOCK_INODE ( sock ) ) ; return ; } sock -> file = NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sock ) { __sock_release ( sock , NULL <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2486\n\n```\nCWE-264 static NPError g_NPN_GetValue ( NPP instance , NPNVariable variable , void * value ) { D ( bug ( \"NPN_GetValue<S2SV_blank>instance=%p,<S2SV_blank>variable=%d<S2SV_blank>[%s]\\\\n\" , instance , variable , string_of_NPNVariable ( variable ) ) ) ; if ( ! thread_check ( ) ) { npw_printf ( \"WARNING:<S2SV_blank>NPN_GetValue<S2SV_blank>not<S2SV_blank>called<S2SV_blank>from<S2SV_blank>the<S2SV_blank>main<S2SV_blank>thread\\\\n\" ) ; return NPERR_INVALID_INSTANCE_ERROR ; } PluginInstance * plugin = NULL ; if ( instance ) plugin = PLUGIN_INSTANCE ( instance ) ; switch ( variable ) { case NPNVxDisplay : * ( void * * ) value = x_display ; break ; case NPNVxtAppContext : * ( void * * ) value = XtDisplayToApplicationContext ( x_display ) ; break ; case NPNVToolkit : * ( NPNToolkitType * ) value = NPW_TOOLKIT ; break ; # if USE_XPCOM case NPNVserviceManager : { nsIServiceManager * sm ; int ret = NS_GetServiceManager ( & sm ) ; if ( NS_FAILED ( ret ) ) { npw_printf ( \"WARNING:<S2SV_blank>NS_GetServiceManager<S2SV_blank>failed\\\\n\" ) ; return NPERR_GENERIC_ERROR ; } * ( nsIServiceManager * * ) value = sm ; break ; } case NPNVDOMWindow : case NPNVDOMElement : npw_printf ( \"WARNING:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>by<S2SV_blank>NPN_GetValue()\\\\n\" , string_of_NPNVariable ( variable ) ) ; return NPERR_INVALID_PARAM ; # endif case NPNVnetscapeWindow : if ( plugin == NULL ) { npw_printf ( \"ERROR:<S2SV_blank>NPNVnetscapeWindow<S2SV_blank>requires<S2SV_blank>a<S2SV_blank>non<S2SV_blank>NULL<S2SV_blank>instance\\\\n\" ) ; return NPERR_INVALID_INSTANCE_ERROR ; } if ( plugin -> browser_toplevel == NULL ) { GdkNativeWindow netscape_xid = None ; NPError error = g_NPN_GetValue_real ( instance , variable , & netscape_xid ) ; if ( error != NPERR_NO_ERROR ) return error ; if ( netscape_xid == None ) return NPERR_GENERIC_ERROR ; plugin -> browser_toplevel = gdk_window_foreign_new ( netscape_xid ) ; if ( plugin -> browser_toplevel == NULL ) return NPERR_GENERIC_ERROR ; } * ( ( GdkNativeWindow * ) value ) = GDK_WINDOW_XWINDOW ( plugin -> browser_toplevel ) ; break ; # if ALLOW_WINDOWLESS_PLUGINS case NPNVSupportsWindowless : # endif case NPNVSupportsXEmbedBool : case NPNVWindowNPObject : case NPNVPluginElementNPObject : <S2SV_StartBug> return g_NPN_GetValue_real ( instance , variable , value ) ; <S2SV_EndBug> default : switch ( variable & 0xff ) { case 13 : if ( NPW_TOOLKIT == NPNVGtk2 ) { * ( NPNToolkitType * ) value = NPW_TOOLKIT ; return NPERR_NO_ERROR ; } break ; } D ( bug ( \"WARNING:<S2SV_blank>unhandled<S2SV_blank>variable<S2SV_blank>%d<S2SV_blank>(%s)<S2SV_blank>in<S2SV_blank>NPN_GetValue()\\\\n\" , variable , string_of_NPNVariable ( variable ) ) ) ; return NPERR_INVALID_PARAM ; } return NPERR_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case NPNVPluginElementNPObject : case NPNVprivateModeBool : case NPNVsupportsAdvancedKeyHandling :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0816\n\n```\nCWE-119 WORD32 ih264d_parse_islice_data_cavlc ( dec_struct_t * ps_dec , dec_slice_params_t * ps_slice , UWORD16 u2_first_mb_in_slice ) { UWORD8 uc_more_data_flag ; UWORD8 u1_num_mbs , u1_mb_idx ; dec_mb_info_t * ps_cur_mb_info ; deblk_mb_t * ps_cur_deblk_mb ; dec_bit_stream_t * const ps_bitstrm = ps_dec -> ps_bitstrm ; UWORD32 * pu4_bitstrm_ofst = & ps_bitstrm -> u4_ofst ; UWORD32 * pu4_bitstrm_buf = ps_bitstrm -> pu4_buffer ; UWORD16 i2_pic_wdin_mbs = ps_dec -> u2_frm_wd_in_mbs ; WORD16 i2_cur_mb_addr ; UWORD8 u1_mbaff ; UWORD8 u1_num_mbs_next , u1_end_of_row , u1_tfr_n_mb ; WORD32 ret = OK ; ps_dec -> u1_qp = ps_slice -> u1_slice_qp ; ih264d_update_qp ( ps_dec , 0 ) ; u1_mbaff = ps_slice -> u1_mbaff_frame_flag ; u1_mb_idx = ps_dec -> u1_mb_idx ; u1_num_mbs = u1_mb_idx ; uc_more_data_flag = 1 ; i2_cur_mb_addr = u2_first_mb_in_slice << u1_mbaff ; do { UWORD8 u1_mb_type ; ps_dec -> pv_prev_mb_parse_tu_coeff_data = ps_dec -> pv_parse_tu_coeff_data ; if ( i2_cur_mb_addr > ps_dec -> ps_cur_sps -> u2_max_mb_addr ) { ret = ERROR_MB_ADDRESS_T ; break ; } ps_cur_mb_info = ps_dec -> ps_nmb_info + u1_num_mbs ; ps_dec -> u4_num_mbs_cur_nmb = u1_num_mbs ; ps_dec -> u4_num_pmbair = ( u1_num_mbs >> u1_mbaff ) ; ps_cur_mb_info -> u1_end_of_slice = 0 ; ps_dec -> pf_get_mb_info ( ps_dec , i2_cur_mb_addr , ps_cur_mb_info , 0 ) ; ps_cur_deblk_mb = ps_dec -> ps_deblk_mbn + u1_num_mbs ; if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ih264d_set_deblocking_parameters ( ps_cur_deblk_mb , ps_slice , ps_dec -> u1_mb_ngbr_availablity , ps_dec -> u1_cur_mb_fld_dec_flag ) ; ps_cur_deblk_mb -> u1_mb_type = ps_cur_deblk_mb -> u1_mb_type | D_INTRA_MB ; { UWORD32 u4_bitstream_offset = * pu4_bitstrm_ofst ; UWORD32 u4_word , u4_ldz , u4_temp ; NEXTBITS_32 ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf ) ; u4_ldz = CLZ ( u4_word ) ; u4_bitstream_offset += ( u4_ldz + 1 ) ; u4_word = 0 ; if ( u4_ldz ) GETBITS ( u4_word , u4_bitstream_offset , pu4_bitstrm_buf , u4_ldz ) ; * pu4_bitstrm_ofst = u4_bitstream_offset ; u4_temp = ( ( 1 << u4_ldz ) + u4_word - 1 ) ; if ( u4_temp > 25 ) return ERROR_MB_TYPE ; u1_mb_type = u4_temp ; } ps_cur_mb_info -> u1_mb_type = u1_mb_type ; COPYTHECONTEXT ( \"u1_mb_type\" , u1_mb_type ) ; if ( 25 == u1_mb_type ) { ps_cur_mb_info -> ps_curmb -> u1_mb_type = I_PCM_MB ; ret = ih264d_parse_ipcm_mb ( ps_dec , ps_cur_mb_info , u1_num_mbs ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = 0 ; } else { ret = ih264d_parse_imb_cavlc ( ps_dec , ps_cur_mb_info , u1_num_mbs , u1_mb_type ) ; if ( ret != OK ) return ret ; ps_cur_deblk_mb -> u1_mb_qp = ps_dec -> u1_qp ; } if ( u1_mbaff ) { ih264d_update_mbaff_left_nnz ( ps_dec , ps_cur_mb_info ) ; } i2_cur_mb_addr ++ ; uc_more_data_flag = MORE_RBSP_DATA ( ps_bitstrm ) ; { mv_pred_t * ps_mv_nmb_start = ps_dec -> ps_mv_cur + ( u1_num_mbs << 4 ) ; mv_pred_t s_mvPred = { { 0 , 0 , 0 , 0 } , { - 1 , - 1 } , 0 , 0 } ; ih264d_rep_mv_colz ( ps_dec , & s_mvPred , ps_mv_nmb_start , 0 , ( UWORD8 ) ( ps_dec -> u1_cur_mb_fld_dec_flag << 1 ) , 4 , 4 ) ; } if ( ps_dec -> u4_num_cores < 3 ) { if ( ps_dec -> u4_app_disable_deblk_frm == 0 ) ps_dec -> pf_compute_bs ( ps_dec , ps_cur_mb_info , ( UWORD16 ) ( u1_num_mbs >> u1_mbaff ) ) ; } u1_num_mbs ++ ; <S2SV_StartBug> ps_dec -> u2_total_mbs_coded ++ ; <S2SV_EndBug> u1_num_mbs_next = i2_pic_wdin_mbs - ps_dec -> u2_mbx - 1 ; u1_end_of_row = ( ! u1_num_mbs_next ) && ( ! ( u1_mbaff && ( u1_num_mbs & 0x01 ) ) ) ; u1_tfr_n_mb = ( u1_num_mbs == ps_dec -> u1_recon_mb_grp ) || u1_end_of_row || ( ! uc_more_data_flag ) ; ps_cur_mb_info -> u1_end_of_slice = ( ! uc_more_data_flag ) ; if ( u1_tfr_n_mb || ( ! uc_more_data_flag ) ) { if ( ps_dec -> u1_separate_parse ) { ih264d_parse_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; ps_dec -> ps_nmb_info += u1_num_mbs ; } else { ih264d_decode_recon_tfr_nmb ( ps_dec , u1_mb_idx , u1_num_mbs , u1_num_mbs_next , u1_tfr_n_mb , u1_end_of_row ) ; } <S2SV_StartBug> if ( u1_tfr_n_mb ) <S2SV_EndBug> u1_num_mbs = 0 ; u1_mb_idx = u1_num_mbs ; ps_dec -> u1_mb_idx = u1_num_mbs ; } } while ( uc_more_data_flag ) ; ps_dec -> u4_num_mbs_cur_nmb = 0 ; ps_dec -> ps_cur_slice -> u4_mbs_in_slice = i2_cur_mb_addr - ( u2_first_mb_in_slice << u1_mbaff ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u1_num_mbs ++ ; <S2SV_ModEnd> u1_num_mbs_next = i2_pic_wdin_mbs <S2SV_ModStart> ) ; } ps_dec -> u2_total_mbs_coded += u1_num_mbs ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-834(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14057\n\n```\nCWE-834 static int asf_read_marker ( AVFormatContext * s , int64_t size ) { AVIOContext * pb = s -> pb ; ASFContext * asf = s -> priv_data ; int i , count , name_len , ret ; char name [ 1024 ] ; avio_rl64 ( pb ) ; avio_rl64 ( pb ) ; count = avio_rl32 ( pb ) ; avio_rl16 ( pb ) ; name_len = avio_rl16 ( pb ) ; <S2SV_StartBug> for ( i = 0 ; i < name_len ; i ++ ) <S2SV_EndBug> avio_r8 ( pb ) ; for ( i = 0 ; i < count ; i ++ ) { int64_t pres_time ; <S2SV_StartBug> int name_len ; <S2SV_EndBug> avio_rl64 ( pb ) ; pres_time = avio_rl64 ( pb ) ; pres_time -= asf -> hdr . preroll * 10000 ; avio_rl16 ( pb ) ; avio_rl32 ( pb ) ; avio_rl32 ( pb ) ; name_len = avio_rl32 ( pb ) ; if ( ( ret = avio_get_str16le ( pb , name_len * 2 , name , sizeof ( name ) ) ) < name_len ) avio_skip ( pb , name_len - ret ) ; avpriv_new_chapter ( s , i , ( AVRational ) { 1 , 10000000 } , pres_time , AV_NOPTS_VALUE , name ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pb ) ; avio_skip ( pb , name_len <S2SV_ModEnd> ) ; for <S2SV_ModStart> ; int name_len ; if ( avio_feof ( pb ) ) return AVERROR_INVALIDDATA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4580\n\n```\nCWE-200 int x25_negotiate_facilities ( struct sk_buff * skb , struct sock * sk , struct x25_facilities * new , struct x25_dte_facilities * dte ) { struct x25_sock * x25 = x25_sk ( sk ) ; struct x25_facilities * ours = & x25 -> facilities ; struct x25_facilities theirs ; int len ; memset ( & theirs , 0 , sizeof ( theirs ) ) ; <S2SV_StartBug> memcpy ( new , ours , sizeof ( * new ) ) ; <S2SV_EndBug> len = x25_parse_facilities ( skb , & theirs , dte , & x25 -> vc_facil_mask ) ; if ( len < 0 ) return len ; if ( ( theirs . reverse & 0x01 ) && ( ours -> reverse & 0x01 ) ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>rejecting<S2SV_blank>reverse<S2SV_blank>charging<S2SV_blank>request\\\\n\" ) ; return - 1 ; } new -> reverse = theirs . reverse ; if ( theirs . throughput ) { int theirs_in = theirs . throughput & 0x0f ; int theirs_out = theirs . throughput & 0xf0 ; int ours_in = ours -> throughput & 0x0f ; int ours_out = ours -> throughput & 0xf0 ; if ( ! ours_in || theirs_in < ours_in ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>inbound<S2SV_blank>throughput<S2SV_blank>negotiated\\\\n\" ) ; new -> throughput = ( new -> throughput & 0xf0 ) | theirs_in ; } if ( ! ours_out || theirs_out < ours_out ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>outbound<S2SV_blank>throughput<S2SV_blank>negotiated\\\\n\" ) ; new -> throughput = ( new -> throughput & 0x0f ) | theirs_out ; } } if ( theirs . pacsize_in && theirs . pacsize_out ) { if ( theirs . pacsize_in < ours -> pacsize_in ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>packet<S2SV_blank>size<S2SV_blank>inwards<S2SV_blank>negotiated<S2SV_blank>down\\\\n\" ) ; new -> pacsize_in = theirs . pacsize_in ; } if ( theirs . pacsize_out < ours -> pacsize_out ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>packet<S2SV_blank>size<S2SV_blank>outwards<S2SV_blank>negotiated<S2SV_blank>down\\\\n\" ) ; new -> pacsize_out = theirs . pacsize_out ; } } if ( theirs . winsize_in && theirs . winsize_out ) { if ( theirs . winsize_in < ours -> winsize_in ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>window<S2SV_blank>size<S2SV_blank>inwards<S2SV_blank>negotiated<S2SV_blank>down\\\\n\" ) ; new -> winsize_in = theirs . winsize_in ; } if ( theirs . winsize_out < ours -> winsize_out ) { SOCK_DEBUG ( sk , \"X.25:<S2SV_blank>window<S2SV_blank>size<S2SV_blank>outwards<S2SV_blank>negotiated<S2SV_blank>down\\\\n\" ) ; new -> winsize_out = theirs . winsize_out ; } } return len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( * new ) ) ; memset ( dte , 0 , sizeof ( * dte\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7013\n\n```\nCWE-189 static int g2m_init_buffers ( G2MContext * c ) { int aligned_height ; if ( ! c -> framebuf || c -> old_width < c -> width || c -> old_height < c -> height ) { c -> framebuf_stride = FFALIGN ( c -> width * 3 , 16 ) ; aligned_height = FFALIGN ( c -> height , 16 ) ; av_free ( c -> framebuf ) ; c -> framebuf = av_mallocz ( c -> framebuf_stride * aligned_height ) ; if ( ! c -> framebuf ) return AVERROR ( ENOMEM ) ; } if ( ! c -> synth_tile || ! c -> jpeg_tile || c -> old_tile_w < c -> tile_width || c -> old_tile_h < c -> tile_height ) { <S2SV_StartBug> c -> tile_stride = FFALIGN ( c -> tile_width * 3 , 16 ) ; <S2SV_EndBug> aligned_height = FFALIGN ( c -> tile_height , 16 ) ; av_free ( c -> synth_tile ) ; av_free ( c -> jpeg_tile ) ; av_free ( c -> kempf_buf ) ; av_free ( c -> kempf_flags ) ; c -> synth_tile = av_mallocz ( c -> tile_stride * aligned_height ) ; c -> jpeg_tile = av_mallocz ( c -> tile_stride * aligned_height ) ; c -> kempf_buf = av_mallocz ( ( c -> tile_width + 1 ) * aligned_height + FF_INPUT_BUFFER_PADDING_SIZE ) ; c -> kempf_flags = av_mallocz ( c -> tile_width * aligned_height ) ; if ( ! c -> synth_tile || ! c -> jpeg_tile || ! c -> kempf_buf || ! c -> kempf_flags ) return AVERROR ( ENOMEM ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> c -> tile_width <S2SV_ModEnd> , 16 ) <S2SV_ModStart> , 16 ) * 3\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19244\n\n```\nCWE-000 int sqlite3Select ( Parse * pParse , Select * p , SelectDest * pDest ) { int i , j ; WhereInfo * pWInfo ; Vdbe * v ; int isAgg ; ExprList * pEList = 0 ; SrcList * pTabList ; Expr * pWhere ; ExprList * pGroupBy ; Expr * pHaving ; int rc = 1 ; DistinctCtx sDistinct ; SortCtx sSort ; AggInfo sAggInfo ; int iEnd ; sqlite3 * db ; ExprList * pMinMaxOrderBy = 0 ; u8 minMaxFlag ; db = pParse -> db ; v = sqlite3GetVdbe ( pParse ) ; if ( p == 0 || db -> mallocFailed || pParse -> nErr ) { return 1 ; } if ( sqlite3AuthCheck ( pParse , SQLITE_SELECT , 0 , 0 , 0 ) ) return 1 ; memset ( & sAggInfo , 0 , sizeof ( sAggInfo ) ) ; # if SELECTTRACE_ENABLED SELECTTRACE ( 1 , pParse , p , ( \"begin<S2SV_blank>processing:\\\\n\" , pParse -> addrExplain ) ) ; if ( sqlite3SelectTrace & 0x100 ) { sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif assert ( p -> pOrderBy == 0 || pDest -> eDest != SRT_DistFifo ) ; assert ( p -> pOrderBy == 0 || pDest -> eDest != SRT_Fifo ) ; assert ( p -> pOrderBy == 0 || pDest -> eDest != SRT_DistQueue ) ; assert ( p -> pOrderBy == 0 || pDest -> eDest != SRT_Queue ) ; if ( IgnorableOrderby ( pDest ) ) { assert ( pDest -> eDest == SRT_Exists || pDest -> eDest == SRT_Union || pDest -> eDest == SRT_Except || pDest -> eDest == SRT_Discard || pDest -> eDest == SRT_Queue || pDest -> eDest == SRT_DistFifo || pDest -> eDest == SRT_DistQueue || pDest -> eDest == SRT_Fifo ) ; sqlite3ExprListDelete ( db , p -> pOrderBy ) ; p -> pOrderBy = 0 ; p -> selFlags &= ~ SF_Distinct ; } sqlite3SelectPrep ( pParse , p , 0 ) ; if ( pParse -> nErr || db -> mallocFailed ) { goto select_end ; } assert ( p -> pEList != 0 ) ; # if SELECTTRACE_ENABLED if ( sqlite3SelectTrace & 0x104 ) { SELECTTRACE ( 0x104 , pParse , p , ( \"after<S2SV_blank>name<S2SV_blank>resolution:\\\\n\" ) ) ; sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif if ( pDest -> eDest == SRT_Output ) { generateColumnNames ( pParse , p ) ; } # ifndef SQLITE_OMIT_WINDOWFUNC if ( sqlite3WindowRewrite ( pParse , p ) ) { goto select_end ; } # if SELECTTRACE_ENABLED if ( p -> pWin && ( sqlite3SelectTrace & 0x108 ) != 0 ) { SELECTTRACE ( 0x104 , pParse , p , ( \"after<S2SV_blank>window<S2SV_blank>rewrite:\\\\n\" ) ) ; sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif # endif pTabList = p -> pSrc ; isAgg = ( p -> selFlags & SF_Aggregate ) != 0 ; memset ( & sSort , 0 , sizeof ( sSort ) ) ; sSort . pOrderBy = p -> pOrderBy ; # if ! defined ( SQLITE_OMIT_SUBQUERY ) || ! defined ( SQLITE_OMIT_VIEW ) for ( i = 0 ; ! p -> pPrior && i < pTabList -> nSrc ; i ++ ) { struct SrcList_item * pItem = & pTabList -> a [ i ] ; Select * pSub = pItem -> pSelect ; Table * pTab = pItem -> pTab ; if ( ( pItem -> fg . jointype & JT_LEFT ) != 0 && sqlite3ExprImpliesNonNullRow ( p -> pWhere , pItem -> iCursor ) && OptimizationEnabled ( db , SQLITE_SimplifyJoin ) ) { SELECTTRACE ( 0x100 , pParse , p , ( \"LEFT-JOIN<S2SV_blank>simplifies<S2SV_blank>to<S2SV_blank>JOIN<S2SV_blank>on<S2SV_blank>term<S2SV_blank>%d\\\\n\" , i ) ) ; pItem -> fg . jointype &= ~ ( JT_LEFT | JT_OUTER ) ; unsetJoinExpr ( p -> pWhere , pItem -> iCursor ) ; } if ( pSub == 0 ) continue ; if ( pTab -> nCol != pSub -> pEList -> nExpr ) { sqlite3ErrorMsg ( pParse , \"expected<S2SV_blank>%d<S2SV_blank>columns<S2SV_blank>for<S2SV_blank>\\'%s\\'<S2SV_blank>but<S2SV_blank>got<S2SV_blank>%d\" , pTab -> nCol , pTab -> zName , pSub -> pEList -> nExpr ) ; goto select_end ; } if ( ( pSub -> selFlags & SF_Aggregate ) != 0 ) continue ; assert ( pSub -> pGroupBy == 0 ) ; if ( pSub -> pOrderBy != 0 && i == 0 && ( p -> selFlags & SF_ComplexResult ) != 0 && ( pTabList -> nSrc == 1 || ( pTabList -> a [ 1 ] . fg . jointype & ( JT_LEFT | JT_CROSS ) ) != 0 ) ) { continue ; } if ( flattenSubquery ( pParse , p , i , isAgg ) ) { if ( pParse -> nErr ) goto select_end ; i = - 1 ; } pTabList = p -> pSrc ; if ( db -> mallocFailed ) goto select_end ; if ( ! IgnorableOrderby ( pDest ) ) { sSort . pOrderBy = p -> pOrderBy ; } } # endif # ifndef SQLITE_OMIT_COMPOUND_SELECT if ( p -> pPrior ) { rc = multiSelect ( pParse , p , pDest ) ; # if SELECTTRACE_ENABLED SELECTTRACE ( 0x1 , pParse , p , ( \"end<S2SV_blank>compound-select<S2SV_blank>processing\\\\n\" ) ) ; if ( ( sqlite3SelectTrace & 0x2000 ) != 0 && ExplainQueryPlanParent ( pParse ) == 0 ) { sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif if ( p -> pNext == 0 ) ExplainQueryPlanPop ( pParse ) ; return rc ; } # endif if ( pTabList -> nSrc > 1 && OptimizationEnabled ( db , SQLITE_PropagateConst ) && propagateConstants ( pParse , p ) ) { # if SELECTTRACE_ENABLED if ( sqlite3SelectTrace & 0x100 ) { SELECTTRACE ( 0x100 , pParse , p , ( \"After<S2SV_blank>constant<S2SV_blank>propagation:\\\\n\" ) ) ; sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif } else { SELECTTRACE ( 0x100 , pParse , p , ( \"Constant<S2SV_blank>propagation<S2SV_blank>not<S2SV_blank>helpful\\\\n\" ) ) ; } # ifdef SQLITE_COUNTOFVIEW_OPTIMIZATION if ( OptimizationEnabled ( db , SQLITE_QueryFlattener | SQLITE_CountOfView ) && countOfViewOptimization ( pParse , p ) ) { if ( db -> mallocFailed ) goto select_end ; pEList = p -> pEList ; pTabList = p -> pSrc ; } # endif for ( i = 0 ; i < pTabList -> nSrc ; i ++ ) { struct SrcList_item * pItem = & pTabList -> a [ i ] ; SelectDest dest ; Select * pSub ; # if ! defined ( SQLITE_OMIT_SUBQUERY ) || ! defined ( SQLITE_OMIT_VIEW ) const char * zSavedAuthContext ; # endif if ( pItem -> colUsed == 0 && pItem -> zName != 0 ) { sqlite3AuthCheck ( pParse , SQLITE_READ , pItem -> zName , \"\" , pItem -> zDatabase ) ; } # if ! defined ( SQLITE_OMIT_SUBQUERY ) || ! defined ( SQLITE_OMIT_VIEW ) pSub = pItem -> pSelect ; if ( pSub == 0 ) continue ; testcase ( pItem -> addrFillSub != 0 ) ; pParse -> nHeight += sqlite3SelectExprHeight ( p ) ; if ( OptimizationEnabled ( db , SQLITE_PushDown ) && pushDownWhereTerms ( pParse , pSub , p -> pWhere , pItem -> iCursor , ( pItem -> fg . jointype & JT_OUTER ) != 0 ) ) { # if SELECTTRACE_ENABLED if ( sqlite3SelectTrace & 0x100 ) { SELECTTRACE ( 0x100 , pParse , p , ( \"After<S2SV_blank>WHERE-clause<S2SV_blank>push-down<S2SV_blank>into<S2SV_blank>subquery<S2SV_blank>%d:\\\\n\" , pSub -> selId ) ) ; sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif } else { SELECTTRACE ( 0x100 , pParse , p , ( \"Push-down<S2SV_blank>not<S2SV_blank>possible\\\\n\" ) ) ; } zSavedAuthContext = pParse -> zAuthContext ; pParse -> zAuthContext = pItem -> zName ; if ( i == 0 && ( pTabList -> nSrc == 1 || ( pTabList -> a [ 1 ] . fg . jointype & ( JT_LEFT | JT_CROSS ) ) != 0 ) ) { int addrTop = sqlite3VdbeCurrentAddr ( v ) + 1 ; pItem -> regReturn = ++ pParse -> nMem ; sqlite3VdbeAddOp3 ( v , OP_InitCoroutine , pItem -> regReturn , 0 , addrTop ) ; VdbeComment ( ( v , \"%s\" , pItem -> pTab -> zName ) ) ; pItem -> addrFillSub = addrTop ; sqlite3SelectDestInit ( & dest , SRT_Coroutine , pItem -> regReturn ) ; ExplainQueryPlan ( ( pParse , 1 , \"CO-ROUTINE<S2SV_blank>%u\" , pSub -> selId ) ) ; sqlite3Select ( pParse , pSub , & dest ) ; pItem -> pTab -> nRowLogEst = pSub -> nSelectRow ; pItem -> fg . viaCoroutine = 1 ; pItem -> regResult = dest . iSdst ; sqlite3VdbeEndCoroutine ( v , pItem -> regReturn ) ; sqlite3VdbeJumpHere ( v , addrTop - 1 ) ; sqlite3ClearTempRegCache ( pParse ) ; } else { int topAddr ; int onceAddr = 0 ; int retAddr ; struct SrcList_item * pPrior ; testcase ( pItem -> addrFillSub == 0 ) ; pItem -> regReturn = ++ pParse -> nMem ; topAddr = sqlite3VdbeAddOp2 ( v , OP_Integer , 0 , pItem -> regReturn ) ; pItem -> addrFillSub = topAddr + 1 ; if ( pItem -> fg . isCorrelated == 0 ) { onceAddr = sqlite3VdbeAddOp0 ( v , OP_Once ) ; VdbeCoverage ( v ) ; VdbeComment ( ( v , \"materialize<S2SV_blank>\\\\\"%s\\\\\"\" , pItem -> pTab -> zName ) ) ; } else { VdbeNoopComment ( ( v , \"materialize<S2SV_blank>\\\\\"%s\\\\\"\" , pItem -> pTab -> zName ) ) ; } pPrior = isSelfJoinView ( pTabList , pItem ) ; if ( pPrior ) { sqlite3VdbeAddOp2 ( v , OP_OpenDup , pItem -> iCursor , pPrior -> iCursor ) ; assert ( pPrior -> pSelect != 0 ) ; pSub -> nSelectRow = pPrior -> pSelect -> nSelectRow ; } else { sqlite3SelectDestInit ( & dest , SRT_EphemTab , pItem -> iCursor ) ; ExplainQueryPlan ( ( pParse , 1 , \"MATERIALIZE<S2SV_blank>%u\" , pSub -> selId ) ) ; sqlite3Select ( pParse , pSub , & dest ) ; } pItem -> pTab -> nRowLogEst = pSub -> nSelectRow ; if ( onceAddr ) sqlite3VdbeJumpHere ( v , onceAddr ) ; retAddr = sqlite3VdbeAddOp1 ( v , OP_Return , pItem -> regReturn ) ; VdbeComment ( ( v , \"end<S2SV_blank>%s\" , pItem -> pTab -> zName ) ) ; sqlite3VdbeChangeP1 ( v , topAddr , retAddr ) ; sqlite3ClearTempRegCache ( pParse ) ; } if ( db -> mallocFailed ) goto select_end ; pParse -> nHeight -= sqlite3SelectExprHeight ( p ) ; pParse -> zAuthContext = zSavedAuthContext ; # endif } pEList = p -> pEList ; pWhere = p -> pWhere ; pGroupBy = p -> pGroupBy ; pHaving = p -> pHaving ; sDistinct . isTnct = ( p -> selFlags & SF_Distinct ) != 0 ; # if SELECTTRACE_ENABLED if ( sqlite3SelectTrace & 0x400 ) { SELECTTRACE ( 0x400 , pParse , p , ( \"After<S2SV_blank>all<S2SV_blank>FROM-clause<S2SV_blank>analysis:\\\\n\" ) ) ; sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif if ( ( p -> selFlags & ( SF_Distinct | SF_Aggregate ) ) == SF_Distinct && sqlite3ExprListCompare ( sSort . pOrderBy , pEList , - 1 ) == 0 <S2SV_StartBug> ) { <S2SV_EndBug> p -> selFlags &= ~ SF_Distinct ; pGroupBy = p -> pGroupBy = sqlite3ExprListDup ( db , pEList , 0 ) ; assert ( sDistinct . isTnct ) ; # if SELECTTRACE_ENABLED if ( sqlite3SelectTrace & 0x400 ) { SELECTTRACE ( 0x400 , pParse , p , ( \"Transform<S2SV_blank>DISTINCT<S2SV_blank>into<S2SV_blank>GROUP<S2SV_blank>BY:\\\\n\" ) ) ; sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif } if ( sSort . pOrderBy ) { KeyInfo * pKeyInfo ; pKeyInfo = sqlite3KeyInfoFromExprList ( pParse , sSort . pOrderBy , 0 , pEList -> nExpr ) ; sSort . iECursor = pParse -> nTab ++ ; sSort . addrSortIndex = sqlite3VdbeAddOp4 ( v , OP_OpenEphemeral , sSort . iECursor , sSort . pOrderBy -> nExpr + 1 + pEList -> nExpr , 0 , ( char * ) pKeyInfo , P4_KEYINFO ) ; } else { sSort . addrSortIndex = - 1 ; } if ( pDest -> eDest == SRT_EphemTab ) { sqlite3VdbeAddOp2 ( v , OP_OpenEphemeral , pDest -> iSDParm , pEList -> nExpr ) ; } iEnd = sqlite3VdbeMakeLabel ( pParse ) ; if ( ( p -> selFlags & SF_FixedLimit ) == 0 ) { p -> nSelectRow = 320 ; } computeLimitRegisters ( pParse , p , iEnd ) ; if ( p -> iLimit == 0 && sSort . addrSortIndex >= 0 ) { sqlite3VdbeChangeOpcode ( v , sSort . addrSortIndex , OP_SorterOpen ) ; sSort . sortFlags |= SORTFLAG_UseSorter ; } if ( p -> selFlags & SF_Distinct ) { sDistinct . tabTnct = pParse -> nTab ++ ; sDistinct . addrTnct = sqlite3VdbeAddOp4 ( v , OP_OpenEphemeral , sDistinct . tabTnct , 0 , 0 , ( char * ) sqlite3KeyInfoFromExprList ( pParse , p -> pEList , 0 , 0 ) , P4_KEYINFO ) ; sqlite3VdbeChangeP5 ( v , BTREE_UNORDERED ) ; sDistinct . eTnctType = WHERE_DISTINCT_UNORDERED ; } else { sDistinct . eTnctType = WHERE_DISTINCT_NOOP ; } if ( ! isAgg && pGroupBy == 0 ) { u16 wctrlFlags = ( sDistinct . isTnct ? WHERE_WANT_DISTINCT : 0 ) | ( p -> selFlags & SF_FixedLimit ) ; # ifndef SQLITE_OMIT_WINDOWFUNC Window * pWin = p -> pWin ; if ( pWin ) { sqlite3WindowCodeInit ( pParse , pWin ) ; } # endif assert ( WHERE_USE_LIMIT == SF_FixedLimit ) ; SELECTTRACE ( 1 , pParse , p , ( \"WhereBegin\\\\n\" ) ) ; pWInfo = sqlite3WhereBegin ( pParse , pTabList , pWhere , sSort . pOrderBy , p -> pEList , wctrlFlags , p -> nSelectRow ) ; if ( pWInfo == 0 ) goto select_end ; if ( sqlite3WhereOutputRowCount ( pWInfo ) < p -> nSelectRow ) { p -> nSelectRow = sqlite3WhereOutputRowCount ( pWInfo ) ; } if ( sDistinct . isTnct && sqlite3WhereIsDistinct ( pWInfo ) ) { sDistinct . eTnctType = sqlite3WhereIsDistinct ( pWInfo ) ; } if ( sSort . pOrderBy ) { sSort . nOBSat = sqlite3WhereIsOrdered ( pWInfo ) ; sSort . labelOBLopt = sqlite3WhereOrderByLimitOptLabel ( pWInfo ) ; if ( sSort . nOBSat == sSort . pOrderBy -> nExpr ) { sSort . pOrderBy = 0 ; } } if ( sSort . addrSortIndex >= 0 && sSort . pOrderBy == 0 ) { sqlite3VdbeChangeToNoop ( v , sSort . addrSortIndex ) ; } assert ( p -> pEList == pEList ) ; # ifndef SQLITE_OMIT_WINDOWFUNC if ( pWin ) { int addrGosub = sqlite3VdbeMakeLabel ( pParse ) ; int iCont = sqlite3VdbeMakeLabel ( pParse ) ; int iBreak = sqlite3VdbeMakeLabel ( pParse ) ; int regGosub = ++ pParse -> nMem ; sqlite3WindowCodeStep ( pParse , p , pWInfo , regGosub , addrGosub ) ; sqlite3VdbeAddOp2 ( v , OP_Goto , 0 , iBreak ) ; sqlite3VdbeResolveLabel ( v , addrGosub ) ; VdbeNoopComment ( ( v , \"inner-loop<S2SV_blank>subroutine\" ) ) ; sSort . labelOBLopt = 0 ; selectInnerLoop ( pParse , p , - 1 , & sSort , & sDistinct , pDest , iCont , iBreak ) ; sqlite3VdbeResolveLabel ( v , iCont ) ; sqlite3VdbeAddOp1 ( v , OP_Return , regGosub ) ; VdbeComment ( ( v , \"end<S2SV_blank>inner-loop<S2SV_blank>subroutine\" ) ) ; sqlite3VdbeResolveLabel ( v , iBreak ) ; } else # endif { selectInnerLoop ( pParse , p , - 1 , & sSort , & sDistinct , pDest , sqlite3WhereContinueLabel ( pWInfo ) , sqlite3WhereBreakLabel ( pWInfo ) ) ; sqlite3WhereEnd ( pWInfo ) ; } } else { NameContext sNC ; int iAMem ; int iBMem ; int iUseFlag ; int iAbortFlag ; int groupBySort ; int addrEnd ; int sortPTab = 0 ; int sortOut = 0 ; int orderByGrp = 0 ; if ( pGroupBy ) { int k ; struct ExprList_item * pItem ; for ( k = p -> pEList -> nExpr , pItem = p -> pEList -> a ; k > 0 ; k -- , pItem ++ ) { pItem -> u . x . iAlias = 0 ; } for ( k = pGroupBy -> nExpr , pItem = pGroupBy -> a ; k > 0 ; k -- , pItem ++ ) { pItem -> u . x . iAlias = 0 ; } assert ( 66 == sqlite3LogEst ( 100 ) ) ; if ( p -> nSelectRow > 66 ) p -> nSelectRow = 66 ; if ( sSort . pOrderBy && pGroupBy -> nExpr == sSort . pOrderBy -> nExpr ) { int ii ; for ( ii = 0 ; ii < pGroupBy -> nExpr ; ii ++ ) { u8 sortFlags = sSort . pOrderBy -> a [ ii ] . sortFlags & KEYINFO_ORDER_DESC ; pGroupBy -> a [ ii ] . sortFlags = sortFlags ; } if ( sqlite3ExprListCompare ( pGroupBy , sSort . pOrderBy , - 1 ) == 0 ) { orderByGrp = 1 ; } } } else { assert ( 0 == sqlite3LogEst ( 1 ) ) ; p -> nSelectRow = 0 ; } addrEnd = sqlite3VdbeMakeLabel ( pParse ) ; memset ( & sNC , 0 , sizeof ( sNC ) ) ; sNC . pParse = pParse ; sNC . pSrcList = pTabList ; sNC . uNC . pAggInfo = & sAggInfo ; VVA_ONLY ( sNC . ncFlags = NC_UAggInfo ; ) sAggInfo . mnReg = pParse -> nMem + 1 ; sAggInfo . nSortingColumn = pGroupBy ? pGroupBy -> nExpr : 0 ; sAggInfo . pGroupBy = pGroupBy ; sqlite3ExprAnalyzeAggList ( & sNC , pEList ) ; sqlite3ExprAnalyzeAggList ( & sNC , sSort . pOrderBy ) ; if ( pHaving ) { if ( pGroupBy ) { assert ( pWhere == p -> pWhere ) ; assert ( pHaving == p -> pHaving ) ; assert ( pGroupBy == p -> pGroupBy ) ; havingToWhere ( pParse , p ) ; pWhere = p -> pWhere ; } sqlite3ExprAnalyzeAggregates ( & sNC , pHaving ) ; } sAggInfo . nAccumulator = sAggInfo . nColumn ; if ( p -> pGroupBy == 0 && p -> pHaving == 0 && sAggInfo . nFunc == 1 ) { minMaxFlag = minMaxQuery ( db , sAggInfo . aFunc [ 0 ] . pExpr , & pMinMaxOrderBy ) ; } else { minMaxFlag = WHERE_ORDERBY_NORMAL ; } for ( i = 0 ; i < sAggInfo . nFunc ; i ++ ) { Expr * pExpr = sAggInfo . aFunc [ i ] . pExpr ; assert ( ! ExprHasProperty ( pExpr , EP_xIsSelect ) ) ; sNC . ncFlags |= NC_InAggFunc ; sqlite3ExprAnalyzeAggList ( & sNC , pExpr -> x . pList ) ; # ifndef SQLITE_OMIT_WINDOWFUNC assert ( ! IsWindowFunc ( pExpr ) ) ; if ( ExprHasProperty ( pExpr , EP_WinFunc ) ) { sqlite3ExprAnalyzeAggregates ( & sNC , pExpr -> y . pWin -> pFilter ) ; } # endif sNC . ncFlags &= ~ NC_InAggFunc ; } sAggInfo . mxReg = pParse -> nMem ; if ( db -> mallocFailed ) goto select_end ; # if SELECTTRACE_ENABLED if ( sqlite3SelectTrace & 0x400 ) { int ii ; SELECTTRACE ( 0x400 , pParse , p , ( \"After<S2SV_blank>aggregate<S2SV_blank>analysis:\\\\n\" ) ) ; sqlite3TreeViewSelect ( 0 , p , 0 ) ; for ( ii = 0 ; ii < sAggInfo . nColumn ; ii ++ ) { sqlite3DebugPrintf ( \"agg-column[%d]<S2SV_blank>iMem=%d\\\\n\" , ii , sAggInfo . aCol [ ii ] . iMem ) ; sqlite3TreeViewExpr ( 0 , sAggInfo . aCol [ ii ] . pExpr , 0 ) ; } for ( ii = 0 ; ii < sAggInfo . nFunc ; ii ++ ) { sqlite3DebugPrintf ( \"agg-func[%d]:<S2SV_blank>iMem=%d\\\\n\" , ii , sAggInfo . aFunc [ ii ] . iMem ) ; sqlite3TreeViewExpr ( 0 , sAggInfo . aFunc [ ii ] . pExpr , 0 ) ; } } # endif if ( pGroupBy ) { KeyInfo * pKeyInfo ; int addr1 ; int addrOutputRow ; int regOutputRow ; int addrSetAbort ; int addrTopOfLoop ; int addrSortingIdx ; int addrReset ; int regReset ; sAggInfo . sortingIdx = pParse -> nTab ++ ; pKeyInfo = sqlite3KeyInfoFromExprList ( pParse , pGroupBy , 0 , sAggInfo . nColumn ) ; addrSortingIdx = sqlite3VdbeAddOp4 ( v , OP_SorterOpen , sAggInfo . sortingIdx , sAggInfo . nSortingColumn , 0 , ( char * ) pKeyInfo , P4_KEYINFO ) ; iUseFlag = ++ pParse -> nMem ; iAbortFlag = ++ pParse -> nMem ; regOutputRow = ++ pParse -> nMem ; addrOutputRow = sqlite3VdbeMakeLabel ( pParse ) ; regReset = ++ pParse -> nMem ; addrReset = sqlite3VdbeMakeLabel ( pParse ) ; iAMem = pParse -> nMem + 1 ; pParse -> nMem += pGroupBy -> nExpr ; iBMem = pParse -> nMem + 1 ; pParse -> nMem += pGroupBy -> nExpr ; sqlite3VdbeAddOp2 ( v , OP_Integer , 0 , iAbortFlag ) ; VdbeComment ( ( v , \"clear<S2SV_blank>abort<S2SV_blank>flag\" ) ) ; sqlite3VdbeAddOp3 ( v , OP_Null , 0 , iAMem , iAMem + pGroupBy -> nExpr - 1 ) ; sqlite3VdbeAddOp2 ( v , OP_Gosub , regReset , addrReset ) ; SELECTTRACE ( 1 , pParse , p , ( \"WhereBegin\\\\n\" ) ) ; pWInfo = sqlite3WhereBegin ( pParse , pTabList , pWhere , pGroupBy , 0 , WHERE_GROUPBY | ( orderByGrp ? WHERE_SORTBYGROUP : 0 ) , 0 ) ; if ( pWInfo == 0 ) goto select_end ; if ( sqlite3WhereIsOrdered ( pWInfo ) == pGroupBy -> nExpr ) { groupBySort = 0 ; } else { int regBase ; int regRecord ; int nCol ; int nGroupBy ; explainTempTable ( pParse , ( sDistinct . isTnct && ( p -> selFlags & SF_Distinct ) == 0 ) ? \"DISTINCT\" : \"GROUP<S2SV_blank>BY\" ) ; groupBySort = 1 ; nGroupBy = pGroupBy -> nExpr ; nCol = nGroupBy ; j = nGroupBy ; for ( i = 0 ; i < sAggInfo . nColumn ; i ++ ) { if ( sAggInfo . aCol [ i ] . iSorterColumn >= j ) { nCol ++ ; j ++ ; } } regBase = sqlite3GetTempRange ( pParse , nCol ) ; sqlite3ExprCodeExprList ( pParse , pGroupBy , regBase , 0 , 0 ) ; j = nGroupBy ; for ( i = 0 ; i < sAggInfo . nColumn ; i ++ ) { struct AggInfo_col * pCol = & sAggInfo . aCol [ i ] ; if ( pCol -> iSorterColumn >= j ) { int r1 = j + regBase ; sqlite3ExprCodeGetColumnOfTable ( v , pCol -> pTab , pCol -> iTable , pCol -> iColumn , r1 ) ; j ++ ; } } regRecord = sqlite3GetTempReg ( pParse ) ; sqlite3VdbeAddOp3 ( v , OP_MakeRecord , regBase , nCol , regRecord ) ; sqlite3VdbeAddOp2 ( v , OP_SorterInsert , sAggInfo . sortingIdx , regRecord ) ; sqlite3ReleaseTempReg ( pParse , regRecord ) ; sqlite3ReleaseTempRange ( pParse , regBase , nCol ) ; sqlite3WhereEnd ( pWInfo ) ; sAggInfo . sortingIdxPTab = sortPTab = pParse -> nTab ++ ; sortOut = sqlite3GetTempReg ( pParse ) ; sqlite3VdbeAddOp3 ( v , OP_OpenPseudo , sortPTab , sortOut , nCol ) ; sqlite3VdbeAddOp2 ( v , OP_SorterSort , sAggInfo . sortingIdx , addrEnd ) ; VdbeComment ( ( v , \"GROUP<S2SV_blank>BY<S2SV_blank>sort\" ) ) ; VdbeCoverage ( v ) ; sAggInfo . useSortingIdx = 1 ; } if ( orderByGrp && OptimizationEnabled ( db , SQLITE_GroupByOrder ) && ( groupBySort || sqlite3WhereIsSorted ( pWInfo ) ) ) { sSort . pOrderBy = 0 ; sqlite3VdbeChangeToNoop ( v , sSort . addrSortIndex ) ; } addrTopOfLoop = sqlite3VdbeCurrentAddr ( v ) ; if ( groupBySort ) { sqlite3VdbeAddOp3 ( v , OP_SorterData , sAggInfo . sortingIdx , sortOut , sortPTab ) ; } for ( j = 0 ; j < pGroupBy -> nExpr ; j ++ ) { if ( groupBySort ) { sqlite3VdbeAddOp3 ( v , OP_Column , sortPTab , j , iBMem + j ) ; } else { sAggInfo . directMode = 1 ; sqlite3ExprCode ( pParse , pGroupBy -> a [ j ] . pExpr , iBMem + j ) ; } } sqlite3VdbeAddOp4 ( v , OP_Compare , iAMem , iBMem , pGroupBy -> nExpr , ( char * ) sqlite3KeyInfoRef ( pKeyInfo ) , P4_KEYINFO ) ; addr1 = sqlite3VdbeCurrentAddr ( v ) ; sqlite3VdbeAddOp3 ( v , OP_Jump , addr1 + 1 , 0 , addr1 + 1 ) ; VdbeCoverage ( v ) ; sqlite3ExprCodeMove ( pParse , iBMem , iAMem , pGroupBy -> nExpr ) ; sqlite3VdbeAddOp2 ( v , OP_Gosub , regOutputRow , addrOutputRow ) ; VdbeComment ( ( v , \"output<S2SV_blank>one<S2SV_blank>row\" ) ) ; sqlite3VdbeAddOp2 ( v , OP_IfPos , iAbortFlag , addrEnd ) ; VdbeCoverage ( v ) ; VdbeComment ( ( v , \"check<S2SV_blank>abort<S2SV_blank>flag\" ) ) ; sqlite3VdbeAddOp2 ( v , OP_Gosub , regReset , addrReset ) ; VdbeComment ( ( v , \"reset<S2SV_blank>accumulator\" ) ) ; sqlite3VdbeJumpHere ( v , addr1 ) ; updateAccumulator ( pParse , iUseFlag , & sAggInfo ) ; sqlite3VdbeAddOp2 ( v , OP_Integer , 1 , iUseFlag ) ; VdbeComment ( ( v , \"indicate<S2SV_blank>data<S2SV_blank>in<S2SV_blank>accumulator\" ) ) ; if ( groupBySort ) { sqlite3VdbeAddOp2 ( v , OP_SorterNext , sAggInfo . sortingIdx , addrTopOfLoop ) ; VdbeCoverage ( v ) ; } else { sqlite3WhereEnd ( pWInfo ) ; sqlite3VdbeChangeToNoop ( v , addrSortingIdx ) ; } sqlite3VdbeAddOp2 ( v , OP_Gosub , regOutputRow , addrOutputRow ) ; VdbeComment ( ( v , \"output<S2SV_blank>final<S2SV_blank>row\" ) ) ; sqlite3VdbeGoto ( v , addrEnd ) ; addrSetAbort = sqlite3VdbeCurrentAddr ( v ) ; sqlite3VdbeAddOp2 ( v , OP_Integer , 1 , iAbortFlag ) ; VdbeComment ( ( v , \"set<S2SV_blank>abort<S2SV_blank>flag\" ) ) ; sqlite3VdbeAddOp1 ( v , OP_Return , regOutputRow ) ; sqlite3VdbeResolveLabel ( v , addrOutputRow ) ; addrOutputRow = sqlite3VdbeCurrentAddr ( v ) ; sqlite3VdbeAddOp2 ( v , OP_IfPos , iUseFlag , addrOutputRow + 2 ) ; VdbeCoverage ( v ) ; VdbeComment ( ( v , \"Groupby<S2SV_blank>result<S2SV_blank>generator<S2SV_blank>entry<S2SV_blank>point\" ) ) ; sqlite3VdbeAddOp1 ( v , OP_Return , regOutputRow ) ; finalizeAggFunctions ( pParse , & sAggInfo ) ; sqlite3ExprIfFalse ( pParse , pHaving , addrOutputRow + 1 , SQLITE_JUMPIFNULL ) ; selectInnerLoop ( pParse , p , - 1 , & sSort , & sDistinct , pDest , addrOutputRow + 1 , addrSetAbort ) ; sqlite3VdbeAddOp1 ( v , OP_Return , regOutputRow ) ; VdbeComment ( ( v , \"end<S2SV_blank>groupby<S2SV_blank>result<S2SV_blank>generator\" ) ) ; sqlite3VdbeResolveLabel ( v , addrReset ) ; resetAccumulator ( pParse , & sAggInfo ) ; sqlite3VdbeAddOp2 ( v , OP_Integer , 0 , iUseFlag ) ; VdbeComment ( ( v , \"indicate<S2SV_blank>accumulator<S2SV_blank>empty\" ) ) ; sqlite3VdbeAddOp1 ( v , OP_Return , regReset ) ; } else { # ifndef SQLITE_OMIT_BTREECOUNT Table * pTab ; if ( ( pTab = isSimpleCount ( p , & sAggInfo ) ) != 0 ) { const int iDb = sqlite3SchemaToIndex ( pParse -> db , pTab -> pSchema ) ; const int iCsr = pParse -> nTab ++ ; Index * pIdx ; KeyInfo * pKeyInfo = 0 ; Index * pBest = 0 ; int iRoot = pTab -> tnum ; sqlite3CodeVerifySchema ( pParse , iDb ) ; sqlite3TableLock ( pParse , iDb , pTab -> tnum , 0 , pTab -> zName ) ; if ( ! HasRowid ( pTab ) ) pBest = sqlite3PrimaryKeyIndex ( pTab ) ; for ( pIdx = pTab -> pIndex ; pIdx ; pIdx = pIdx -> pNext ) { if ( pIdx -> bUnordered == 0 && pIdx -> szIdxRow < pTab -> szTabRow && pIdx -> pPartIdxWhere == 0 && ( ! pBest || pIdx -> szIdxRow < pBest -> szIdxRow ) ) { pBest = pIdx ; } } if ( pBest ) { iRoot = pBest -> tnum ; pKeyInfo = sqlite3KeyInfoOfIndex ( pParse , pBest ) ; } sqlite3VdbeAddOp4Int ( v , OP_OpenRead , iCsr , iRoot , iDb , 1 ) ; if ( pKeyInfo ) { sqlite3VdbeChangeP4 ( v , - 1 , ( char * ) pKeyInfo , P4_KEYINFO ) ; } sqlite3VdbeAddOp2 ( v , OP_Count , iCsr , sAggInfo . aFunc [ 0 ] . iMem ) ; sqlite3VdbeAddOp1 ( v , OP_Close , iCsr ) ; explainSimpleCount ( pParse , pTab , pBest ) ; } else # endif { int regAcc = 0 ; if ( sAggInfo . nAccumulator ) { for ( i = 0 ; i < sAggInfo . nFunc ; i ++ ) { if ( ExprHasProperty ( sAggInfo . aFunc [ i ] . pExpr , EP_WinFunc ) ) continue ; if ( sAggInfo . aFunc [ i ] . pFunc -> funcFlags & SQLITE_FUNC_NEEDCOLL ) break ; } if ( i == sAggInfo . nFunc ) { regAcc = ++ pParse -> nMem ; sqlite3VdbeAddOp2 ( v , OP_Integer , 0 , regAcc ) ; } } assert ( p -> pGroupBy == 0 ) ; resetAccumulator ( pParse , & sAggInfo ) ; assert ( minMaxFlag == WHERE_ORDERBY_NORMAL || pMinMaxOrderBy != 0 ) ; assert ( pMinMaxOrderBy == 0 || pMinMaxOrderBy -> nExpr == 1 ) ; SELECTTRACE ( 1 , pParse , p , ( \"WhereBegin\\\\n\" ) ) ; pWInfo = sqlite3WhereBegin ( pParse , pTabList , pWhere , pMinMaxOrderBy , 0 , minMaxFlag , 0 ) ; if ( pWInfo == 0 ) { goto select_end ; } updateAccumulator ( pParse , regAcc , & sAggInfo ) ; if ( regAcc ) sqlite3VdbeAddOp2 ( v , OP_Integer , 1 , regAcc ) ; if ( sqlite3WhereIsOrdered ( pWInfo ) > 0 ) { sqlite3VdbeGoto ( v , sqlite3WhereBreakLabel ( pWInfo ) ) ; VdbeComment ( ( v , \"%s()<S2SV_blank>by<S2SV_blank>index\" , ( minMaxFlag == WHERE_ORDERBY_MIN ? \"min\" : \"max\" ) ) ) ; } sqlite3WhereEnd ( pWInfo ) ; finalizeAggFunctions ( pParse , & sAggInfo ) ; } sSort . pOrderBy = 0 ; sqlite3ExprIfFalse ( pParse , pHaving , addrEnd , SQLITE_JUMPIFNULL ) ; selectInnerLoop ( pParse , p , - 1 , 0 , 0 , pDest , addrEnd , addrEnd ) ; } sqlite3VdbeResolveLabel ( v , addrEnd ) ; } if ( sDistinct . eTnctType == WHERE_DISTINCT_UNORDERED ) { explainTempTable ( pParse , \"DISTINCT\" ) ; } if ( sSort . pOrderBy ) { explainTempTable ( pParse , sSort . nOBSat > 0 ? \"RIGHT<S2SV_blank>PART<S2SV_blank>OF<S2SV_blank>ORDER<S2SV_blank>BY\" : \"ORDER<S2SV_blank>BY\" ) ; assert ( p -> pEList == pEList ) ; generateSortTail ( pParse , p , & sSort , pEList -> nExpr , pDest ) ; } sqlite3VdbeResolveLabel ( v , iEnd ) ; rc = ( pParse -> nErr > 0 ) ; select_end : sqlite3ExprListDelete ( db , pMinMaxOrderBy ) ; sqlite3DbFree ( db , sAggInfo . aCol ) ; sqlite3DbFree ( db , sAggInfo . aFunc ) ; # if SELECTTRACE_ENABLED SELECTTRACE ( 0x1 , pParse , p , ( \"end<S2SV_blank>processing\\\\n\" ) ) ; if ( ( sqlite3SelectTrace & 0x2000 ) != 0 && ExplainQueryPlanParent ( pParse ) == 0 ) { sqlite3TreeViewSelect ( 0 , p , 0 ) ; } # endif ExplainQueryPlanPop ( pParse ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) == 0 && p -> pWin == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7018\n\n```\nCWE-119 static int get_cox ( Jpeg2000DecoderContext * s , Jpeg2000CodingStyle * c ) { uint8_t byte ; if ( bytestream2_get_bytes_left ( & s -> g ) < 5 ) return AVERROR_INVALIDDATA ; c -> nreslevels = bytestream2_get_byteu ( & s -> g ) + 1 ; if ( c -> nreslevels >= JPEG2000_MAX_RESLEVELS ) { av_log ( s -> avctx , AV_LOG_ERROR , \"nreslevels<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>invalid\\\\n\" , c -> nreslevels ) ; return AVERROR_INVALIDDATA ; } if ( c -> nreslevels < s -> reduction_factor ) c -> nreslevels2decode = 1 ; else c -> nreslevels2decode = c -> nreslevels - s -> reduction_factor ; c -> log2_cblk_width = ( bytestream2_get_byteu ( & s -> g ) & 15 ) + 2 ; c -> log2_cblk_height = ( bytestream2_get_byteu ( & s -> g ) & 15 ) + 2 ; if ( c -> log2_cblk_width > 10 || c -> log2_cblk_height > 10 || c -> log2_cblk_width + c -> log2_cblk_height > 12 ) { av_log ( s -> avctx , AV_LOG_ERROR , \"cblk<S2SV_blank>size<S2SV_blank>invalid\\\\n\" ) ; return AVERROR_INVALIDDATA ; } <S2SV_StartBug> c -> cblk_style = bytestream2_get_byteu ( & s -> g ) ; <S2SV_EndBug> if ( c -> cblk_style != 0 ) { av_log ( s -> avctx , AV_LOG_WARNING , \"extra<S2SV_blank>cblk<S2SV_blank>styles<S2SV_blank>%X\\\\n\" , c -> cblk_style ) ; } c -> transform = bytestream2_get_byteu ( & s -> g ) ; if ( ( s -> avctx -> flags & CODEC_FLAG_BITEXACT ) && ( c -> transform == FF_DWT97 ) ) c -> transform = FF_DWT97_INT ; if ( c -> csty & JPEG2000_CSTY_PREC ) { int i ; for ( i = 0 ; i < c -> nreslevels ; i ++ ) { byte = bytestream2_get_byte ( & s -> g ) ; c -> log2_prec_widths [ i ] = byte & 0x0F ; c -> log2_prec_heights [ i ] = ( byte >> 4 ) & 0x0F ; } } else { memset ( c -> log2_prec_widths , 15 , sizeof ( c -> log2_prec_widths ) ) ; memset ( c -> log2_prec_heights , 15 , sizeof ( c -> log2_prec_heights ) ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> AVERROR_INVALIDDATA ; } if ( c -> log2_cblk_width > 6 || c -> log2_cblk_height > 6 ) { avpriv_request_sample ( s -> avctx , \"cblk<S2SV_blank>size<S2SV_blank>><S2SV_blank>64\" ) ; return AVERROR_PATCHWELCOME ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-89(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0036\n\n```\nCWE-89 static CURLcode imap_parse_url_path ( struct connectdata * conn ) { struct imap_conn * imapc = & conn -> proto . imapc ; struct SessionHandle * data = conn -> data ; const char * path = data -> state . path ; <S2SV_StartBug> int len ; <S2SV_EndBug> if ( ! * path ) path = \"INBOX\" ; <S2SV_StartBug> imapc -> mailbox = curl_easy_unescape ( data , path , 0 , & len ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! imapc -> mailbox ) <S2SV_EndBug> return CURLE_OUT_OF_MEMORY ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . path ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> = \"INBOX\" ; return Curl_urldecode <S2SV_ModEnd> ( data , <S2SV_ModStart> 0 , & <S2SV_ModEnd> imapc -> mailbox <S2SV_ModStart> imapc -> mailbox , NULL , TRUE ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-2550\n\n```\nCWE-399 void __scm_destroy ( struct scm_cookie * scm ) { struct scm_fp_list * fpl = scm -> fp ; int i ; if ( fpl ) { scm -> fp = NULL ; for ( i = fpl -> count - 1 ; i >= 0 ; i -- ) fput ( fpl -> fp [ i ] ) ; <S2SV_StartBug> kfree ( fpl ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; free_uid ( fpl -> user ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_cyclic_refresh_update_segment ( VP9_COMP * const cpi , MB_MODE_INFO * const mbmi , int mi_row , int mi_col , <S2SV_StartBug> BLOCK_SIZE bsize , int use_rd ) { <S2SV_EndBug> const VP9_COMMON * const cm = & cpi -> common ; CYCLIC_REFRESH * const cr = cpi -> cyclic_refresh ; const int bw = num_8x8_blocks_wide_lookup [ bsize ] ; const int bh = num_8x8_blocks_high_lookup [ bsize ] ; const int xmis = MIN ( cm -> mi_cols - mi_col , bw ) ; const int ymis = MIN ( cm -> mi_rows - mi_row , bh ) ; const int block_index = mi_row * cm -> mi_cols + mi_col ; <S2SV_StartBug> const int refresh_this_block = candidate_refresh_aq ( cr , mbmi , bsize , use_rd ) ; <S2SV_EndBug> int new_map_value = cr -> map [ block_index ] ; int x = 0 ; int y = 0 ; <S2SV_StartBug> if ( mbmi -> segment_id > 0 && ! refresh_this_block ) <S2SV_EndBug> mbmi -> segment_id = 0 ; <S2SV_StartBug> if ( mbmi -> segment_id == 1 ) { <S2SV_EndBug> new_map_value = - cr -> time_for_refresh ; } else if ( refresh_this_block ) { if ( cr -> map [ block_index ] == 1 ) new_map_value = 0 ; } else { new_map_value = 1 ; } for ( y = 0 ; y < ymis ; y ++ ) for ( x = 0 ; x < xmis ; x ++ ) { <S2SV_StartBug> cr -> map [ block_index + y * cm -> mi_cols + x ] = new_map_value ; <S2SV_EndBug> <S2SV_StartBug> cpi -> segmentation_map [ block_index + y * cm -> mi_cols + x ] = <S2SV_EndBug> mbmi -> segment_id ; } if ( mbmi -> segment_id ) cr -> num_seg_blocks += xmis * ymis ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> BLOCK_SIZE bsize , int64_t rate , int64_t dist , int skip <S2SV_ModEnd> ) { const <S2SV_ModStart> , mbmi , rate , dist , bsize <S2SV_ModEnd> ) ; int <S2SV_ModStart> ; if ( cyclic_refresh_segment_id_boosted ( mbmi -> segment_id ) ) { mbmi -> segment_id = refresh_this_block ; if ( skip ) mbmi -> segment_id = CR_SEGMENT_ID_BASE ; } if ( cyclic_refresh_segment_id_boosted ( mbmi -> segment_id ) ) { new_map_value = - cr -> time_for_refresh ; } else if ( refresh_this_block ) { if ( cr -> map [ block_index ] <S2SV_ModEnd> == 1 ) <S2SV_ModStart> == 1 ) <S2SV_ModEnd> new_map_value = 0 <S2SV_ModStart> ++ ) { int map_offset = <S2SV_ModEnd> block_index + y <S2SV_ModStart> mi_cols + x ; cr -> map [ map_offset <S2SV_ModStart> -> segmentation_map [ map_offset ] = mbmi -> segment_id ; if ( ! is_inter_block ( mbmi ) || ! skip ) cr -> last_coded_q_map [ map_offset ] = clamp ( cm -> base_qindex + cr -> qindex_delta [ mbmi -> segment_id ] , 0 , MAXQ ) ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-18586\n\n```\nCWE-22 <S2SV_StartBug> static char * create_output_name ( unsigned char * fname , unsigned char * dir , <S2SV_EndBug> int lower , int isunix , int utf8 ) { unsigned char * p , * name , c , * fe , sep , slash ; unsigned int x ; sep = ( isunix ) ? '/' : '\\\\\\\\' ; slash = ( isunix ) ? '\\\\\\\\' : '/' ; x = strlen ( ( char * ) fname ) ; <S2SV_StartBug> if ( utf8 ) x *= 3 ; <S2SV_EndBug> if ( dir ) x += strlen ( ( char * ) dir ) ; if ( ! ( name = ( unsigned char * ) malloc ( x + 2 ) ) ) { <S2SV_StartBug> fprintf ( stderr , \"out<S2SV_blank>of<S2SV_blank>memory!\\\\n\" ) ; <S2SV_EndBug> return NULL ; } * name = '\\\\0' ; if ( dir ) { strcpy ( ( char * ) name , ( char * ) dir ) ; strcat ( ( char * ) name , \"/\" ) ; } <S2SV_StartBug> while ( * fname == sep ) fname ++ ; <S2SV_EndBug> <S2SV_StartBug> p = & name [ strlen ( ( char * ) name ) ] ; <S2SV_EndBug> fe = & fname [ strlen ( ( char * ) fname ) ] ; if ( utf8 ) { do { <S2SV_StartBug> if ( fname >= fe ) { <S2SV_EndBug> free ( name ) ; return NULL ; } if ( ( c = * fname ++ ) < 0x80 ) x = c ; else { if ( ( c >= 0xC0 ) && ( c < 0xE0 ) ) { <S2SV_StartBug> x = ( c & 0x1F ) << 6 ; <S2SV_EndBug> x |= * fname ++ & 0x3F ; } else if ( ( c >= 0xE0 ) && ( c < 0xF0 ) ) { x = ( c & 0xF ) << 12 ; x |= ( * fname ++ & 0x3F ) << 6 ; x |= * fname ++ & 0x3F ; } else x = '?' ; } if ( x == sep ) x = '/' ; else if ( x == slash ) x = '\\\\\\\\' ; else if ( lower ) x = ( unsigned int ) tolower ( ( int ) x ) ; if ( x < 0x80 ) { * p ++ = ( unsigned char ) x ; } else if ( x < 0x800 ) { * p ++ = 0xC0 | ( x >> 6 ) ; * p ++ = 0x80 | ( x & 0x3F ) ; } else { * p ++ = 0xE0 | ( x >> 12 ) ; * p ++ = 0x80 | ( ( x >> 6 ) & 0x3F ) ; * p ++ = 0x80 | ( x & 0x3F ) ; } <S2SV_StartBug> } while ( x ) ; <S2SV_EndBug> } else { do { c = * fname ++ ; if ( c == sep ) c = '/' ; else if ( c == slash ) c = '\\\\\\\\' ; else if ( lower ) c = ( unsigned char ) tolower ( ( int ) c ) ; } while ( ( * p ++ = c ) ) ; } return ( char * ) name ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> <S2SV_ModEnd> char * create_output_name <S2SV_ModStart> * create_output_name ( <S2SV_ModEnd> char * fname <S2SV_ModStart> char * fname ) { char * out , * p <S2SV_ModEnd> ; if ( <S2SV_ModStart> ; if ( ( out = malloc ( strlen ( fname ) + 1 <S2SV_ModEnd> ) ) ) <S2SV_ModStart> ) ) { <S2SV_ModEnd> while ( * <S2SV_ModStart> * fname == '/' || * fname == '\\\\\\\\' <S2SV_ModEnd> ) fname ++ <S2SV_ModStart> fname ++ ; strcpy ( out , ( * fname ) ? fname : \"x\" ) ; for ( p = out ; * p ; p ++ ) <S2SV_ModEnd> { if ( <S2SV_ModStart> { if ( p [ 0 ] == '.' && p [ 1 ] == '.' && ( p [ 2 ] == '/' || p [ 2 ] == '\\\\\\\\' <S2SV_ModEnd> ) ) { <S2SV_ModStart> ) ) { p [ 0 ] = p [ 1 ] = 'x' <S2SV_ModEnd> ; } } <S2SV_ModStart> ; } } } return out <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-6520\n\n```\nCWE-264 struct tcp_sock_t * tcp_open ( uint16_t port ) { struct tcp_sock_t * this = calloc ( 1 , sizeof * this ) ; if ( this == NULL ) { <S2SV_StartBug> ERR ( \"callocing<S2SV_blank>this<S2SV_blank>failed\" ) ; <S2SV_EndBug> goto error ; } this -> sd = - 1 ; <S2SV_StartBug> this -> sd = socket ( AF_INET6 , SOCK_STREAM , 0 ) ; <S2SV_EndBug> if ( this -> sd < 0 ) { <S2SV_StartBug> ERR ( \"sockect<S2SV_blank>open<S2SV_blank>failed\" ) ; <S2SV_EndBug> goto error ; } struct sockaddr_in6 addr ; memset ( & addr , 0 , sizeof addr ) ; <S2SV_StartBug> addr . sin6_family = AF_INET6 ; <S2SV_EndBug> addr . sin6_port = htons ( port ) ; <S2SV_StartBug> addr . sin6_addr = in6addr_any ; <S2SV_EndBug> if ( bind ( this -> sd , ( struct sockaddr * ) & addr , sizeof addr ) < 0 ) { if ( g_options . only_desired_port == 1 ) <S2SV_StartBug> ERR ( \"Bind<S2SV_blank>on<S2SV_blank>port<S2SV_blank>failed.<S2SV_blank>\" <S2SV_EndBug> \"Requested<S2SV_blank>port<S2SV_blank>may<S2SV_blank>be<S2SV_blank>taken<S2SV_blank>or<S2SV_blank>require<S2SV_blank>root<S2SV_blank>permissions.\" ) ; goto error ; } if ( listen ( this -> sd , HTTP_MAX_PENDING_CONNS ) < 0 ) { <S2SV_StartBug> ERR ( \"listen<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>socket\" ) ; <S2SV_EndBug> goto error ; } return this ; error : if ( this != NULL ) { if ( this -> sd != - 1 ) { close ( this -> sd ) ; } free ( this ) ; } return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { ERR ( \"IPv4:<S2SV_blank>callocing<S2SV_blank>this<S2SV_blank>failed\" <S2SV_ModEnd> ) ; goto <S2SV_ModStart> = socket ( AF_INET <S2SV_ModEnd> , SOCK_STREAM , <S2SV_ModStart> { ERR ( \"IPv4<S2SV_blank>socket<S2SV_blank>open<S2SV_blank>failed\" ) ; goto error ; } struct sockaddr_in <S2SV_ModEnd> addr ; memset <S2SV_ModStart> ; addr . sin_family = AF_INET ; addr . sin_port <S2SV_ModEnd> = htons ( <S2SV_ModStart> ; addr . sin_addr . s_addr = htonl ( 0x7F000001 ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ERR ( \"IPv4<S2SV_blank>bind<S2SV_blank>on<S2SV_blank>port<S2SV_blank>failed.<S2SV_blank>\" <S2SV_ModEnd> \"Requested<S2SV_blank>port<S2SV_blank>may<S2SV_blank>be<S2SV_blank>taken<S2SV_blank>or<S2SV_blank>require<S2SV_blank>root<S2SV_blank>permissions.\" ) ; <S2SV_ModStart> { ERR ( \"IPv4<S2SV_blank>listen<S2SV_blank>failed<S2SV_blank>on<S2SV_blank>socket\" <S2SV_ModEnd> ) ; goto\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0178\n\n```\nCWE-20 void freeClient ( redisClient * c ) { listNode * ln ; sdsfree ( c -> querybuf ) ; c -> querybuf = NULL ; if ( c -> flags & REDIS_BLOCKED ) unblockClientWaitingData ( c ) ; unwatchAllKeys ( c ) ; listRelease ( c -> watched_keys ) ; pubsubUnsubscribeAllChannels ( c , 0 ) ; pubsubUnsubscribeAllPatterns ( c , 0 ) ; dictRelease ( c -> pubsub_channels ) ; listRelease ( c -> pubsub_patterns ) ; aeDeleteFileEvent ( server . el , c -> fd , AE_READABLE ) ; aeDeleteFileEvent ( server . el , c -> fd , AE_WRITABLE ) ; listRelease ( c -> reply ) ; freeClientArgv ( c ) ; close ( c -> fd ) ; ln = listSearchKey ( server . clients , c ) ; redisAssert ( ln != NULL ) ; listDelNode ( server . clients , ln ) ; if ( c -> flags & REDIS_IO_WAIT ) { <S2SV_StartBug> redisAssert ( server . vm_enabled ) ; <S2SV_EndBug> if ( listLength ( c -> io_keys ) == 0 ) { ln = listSearchKey ( server . io_ready_clients , c ) ; redisAssert ( ln != NULL ) ; listDelNode ( server . io_ready_clients , ln ) ; } else { while ( listLength ( c -> io_keys ) ) { ln = listFirst ( c -> io_keys ) ; dontWaitForSwappedKey ( c , ln -> value ) ; } } <S2SV_StartBug> server . vm_blocked_clients -- ; <S2SV_EndBug> } listRelease ( c -> io_keys ) ; if ( c -> flags & REDIS_SLAVE ) { if ( c -> replstate == REDIS_REPL_SEND_BULK && c -> repldbfd != - 1 ) close ( c -> repldbfd ) ; list * l = ( c -> flags & REDIS_MONITOR ) ? server . monitors : server . slaves ; ln = listSearchKey ( l , c ) ; redisAssert ( ln != NULL ) ; listDelNode ( l , ln ) ; } if ( c -> flags & REDIS_MASTER ) { server . master = NULL ; server . replstate = REDIS_REPL_CONNECT ; while ( listLength ( server . slaves ) ) { ln = listFirst ( server . slaves ) ; freeClient ( ( redisClient * ) ln -> value ) ; } } zfree ( c -> argv ) ; freeClientMultiState ( c ) ; zfree ( c ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( server . ds_enabled <S2SV_ModEnd> ) ; if <S2SV_ModStart> } server . cache_blocked_clients <S2SV_ModEnd> -- ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4001\n\n```\nCWE-189 <S2SV_StartBug> void oz_hcd_get_desc_cnf ( void * hport , u8 req_id , int status , const u8 * desc , <S2SV_EndBug> <S2SV_StartBug> int length , int offset , int total_size ) <S2SV_EndBug> { struct oz_port * port = hport ; struct urb * urb ; int err = 0 ; oz_dbg ( ON , \"oz_hcd_get_desc_cnf<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>offs<S2SV_blank>=<S2SV_blank>%d<S2SV_blank>tot_size<S2SV_blank>=<S2SV_blank>%d\\\\n\" , length , offset , total_size ) ; urb = oz_find_urb_by_id ( port , 0 , req_id ) ; if ( ! urb ) return ; if ( status == 0 ) { <S2SV_StartBug> int copy_len ; <S2SV_EndBug> <S2SV_StartBug> int required_size = urb -> transfer_buffer_length ; <S2SV_EndBug> if ( required_size > total_size ) required_size = total_size ; copy_len = required_size - offset ; if ( length <= copy_len ) copy_len = length ; memcpy ( urb -> transfer_buffer + offset , desc , copy_len ) ; offset += copy_len ; if ( offset < required_size ) { struct usb_ctrlrequest * setup = ( struct usb_ctrlrequest * ) urb -> setup_packet ; unsigned wvalue = le16_to_cpu ( setup -> wValue ) ; if ( oz_enqueue_ep_urb ( port , 0 , 0 , urb , req_id ) ) err = - ENOMEM ; else if ( oz_usb_get_desc_req ( port -> hpd , req_id , setup -> bRequestType , ( u8 ) ( wvalue >> 8 ) , ( u8 ) wvalue , setup -> wIndex , offset , required_size - offset ) ) { oz_dequeue_ep_urb ( port , 0 , 0 , urb ) ; err = - ENOMEM ; } if ( err == 0 ) return ; } } urb -> actual_length = total_size ; oz_complete_urb ( port -> ozhcd -> hcd , urb , 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u8 req_id , u8 <S2SV_ModEnd> status , const <S2SV_ModStart> * desc , u8 length , u16 offset , u16 <S2SV_ModEnd> total_size ) { <S2SV_ModStart> 0 ) { unsigned <S2SV_ModStart> int copy_len ; unsigned\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9084\n\n```\nCWE-190 static long vfio_pci_ioctl ( void * device_data , unsigned int cmd , unsigned long arg ) { struct vfio_pci_device * vdev = device_data ; unsigned long minsz ; if ( cmd == VFIO_DEVICE_GET_INFO ) { struct vfio_device_info info ; minsz = offsetofend ( struct vfio_device_info , num_irqs ) ; if ( copy_from_user ( & info , ( void __user * ) arg , minsz ) ) return - EFAULT ; if ( info . argsz < minsz ) return - EINVAL ; info . flags = VFIO_DEVICE_FLAGS_PCI ; if ( vdev -> reset_works ) info . flags |= VFIO_DEVICE_FLAGS_RESET ; info . num_regions = VFIO_PCI_NUM_REGIONS + vdev -> num_regions ; info . num_irqs = VFIO_PCI_NUM_IRQS ; return copy_to_user ( ( void __user * ) arg , & info , minsz ) ? - EFAULT : 0 ; } else if ( cmd == VFIO_DEVICE_GET_REGION_INFO ) { struct pci_dev * pdev = vdev -> pdev ; struct vfio_region_info info ; struct vfio_info_cap caps = { . buf = NULL , . size = 0 } ; int i , ret ; minsz = offsetofend ( struct vfio_region_info , offset ) ; if ( copy_from_user ( & info , ( void __user * ) arg , minsz ) ) return - EFAULT ; if ( info . argsz < minsz ) return - EINVAL ; switch ( info . index ) { case VFIO_PCI_CONFIG_REGION_INDEX : info . offset = VFIO_PCI_INDEX_TO_OFFSET ( info . index ) ; info . size = pdev -> cfg_size ; info . flags = VFIO_REGION_INFO_FLAG_READ | VFIO_REGION_INFO_FLAG_WRITE ; break ; case VFIO_PCI_BAR0_REGION_INDEX ... VFIO_PCI_BAR5_REGION_INDEX : info . offset = VFIO_PCI_INDEX_TO_OFFSET ( info . index ) ; info . size = pci_resource_len ( pdev , info . index ) ; if ( ! info . size ) { info . flags = 0 ; break ; } info . flags = VFIO_REGION_INFO_FLAG_READ | VFIO_REGION_INFO_FLAG_WRITE ; if ( vdev -> bar_mmap_supported [ info . index ] ) { info . flags |= VFIO_REGION_INFO_FLAG_MMAP ; if ( info . index == vdev -> msix_bar ) { ret = msix_sparse_mmap_cap ( vdev , & caps ) ; if ( ret ) return ret ; } } break ; case VFIO_PCI_ROM_REGION_INDEX : { void __iomem * io ; size_t size ; info . offset = VFIO_PCI_INDEX_TO_OFFSET ( info . index ) ; info . flags = 0 ; info . size = pci_resource_len ( pdev , info . index ) ; if ( ! info . size ) { if ( pdev -> resource [ PCI_ROM_RESOURCE ] . flags & IORESOURCE_ROM_SHADOW ) info . size = 0x20000 ; else break ; } io = pci_map_rom ( pdev , & size ) ; if ( ! io || ! size ) { info . size = 0 ; break ; } pci_unmap_rom ( pdev , io ) ; info . flags = VFIO_REGION_INFO_FLAG_READ ; break ; } case VFIO_PCI_VGA_REGION_INDEX : if ( ! vdev -> has_vga ) return - EINVAL ; info . offset = VFIO_PCI_INDEX_TO_OFFSET ( info . index ) ; info . size = 0xc0000 ; info . flags = VFIO_REGION_INFO_FLAG_READ | VFIO_REGION_INFO_FLAG_WRITE ; break ; default : if ( info . index >= VFIO_PCI_NUM_REGIONS + vdev -> num_regions ) return - EINVAL ; i = info . index - VFIO_PCI_NUM_REGIONS ; info . offset = VFIO_PCI_INDEX_TO_OFFSET ( info . index ) ; info . size = vdev -> region [ i ] . size ; info . flags = vdev -> region [ i ] . flags ; ret = region_type_cap ( vdev , & caps , vdev -> region [ i ] . type , vdev -> region [ i ] . subtype ) ; if ( ret ) return ret ; } if ( caps . size ) { info . flags |= VFIO_REGION_INFO_FLAG_CAPS ; if ( info . argsz < sizeof ( info ) + caps . size ) { info . argsz = sizeof ( info ) + caps . size ; info . cap_offset = 0 ; } else { vfio_info_cap_shift ( & caps , sizeof ( info ) ) ; if ( copy_to_user ( ( void __user * ) arg + sizeof ( info ) , caps . buf , caps . size ) ) { kfree ( caps . buf ) ; return - EFAULT ; } info . cap_offset = sizeof ( info ) ; } kfree ( caps . buf ) ; } return copy_to_user ( ( void __user * ) arg , & info , minsz ) ? - EFAULT : 0 ; } else if ( cmd == VFIO_DEVICE_GET_IRQ_INFO ) { struct vfio_irq_info info ; minsz = offsetofend ( struct vfio_irq_info , count ) ; if ( copy_from_user ( & info , ( void __user * ) arg , minsz ) ) return - EFAULT ; if ( info . argsz < minsz || info . index >= VFIO_PCI_NUM_IRQS ) return - EINVAL ; switch ( info . index ) { case VFIO_PCI_INTX_IRQ_INDEX ... VFIO_PCI_MSIX_IRQ_INDEX : case VFIO_PCI_REQ_IRQ_INDEX : break ; case VFIO_PCI_ERR_IRQ_INDEX : if ( pci_is_pcie ( vdev -> pdev ) ) break ; default : return - EINVAL ; } info . flags = VFIO_IRQ_INFO_EVENTFD ; info . count = vfio_pci_get_irq_count ( vdev , info . index ) ; if ( info . index == VFIO_PCI_INTX_IRQ_INDEX ) info . flags |= ( VFIO_IRQ_INFO_MASKABLE | VFIO_IRQ_INFO_AUTOMASKED ) ; else info . flags |= VFIO_IRQ_INFO_NORESIZE ; return copy_to_user ( ( void __user * ) arg , & info , minsz ) ? - EFAULT : 0 ; } else if ( cmd == VFIO_DEVICE_SET_IRQS ) { struct vfio_irq_set hdr ; <S2SV_StartBug> u8 * data = NULL ; <S2SV_EndBug> <S2SV_StartBug> int ret = 0 ; <S2SV_EndBug> minsz = offsetofend ( struct vfio_irq_set , count ) ; if ( copy_from_user ( & hdr , ( void __user * ) arg , minsz ) ) return - EFAULT ; if ( hdr . argsz < minsz || hdr . index >= VFIO_PCI_NUM_IRQS || <S2SV_StartBug> hdr . flags & ~ ( VFIO_IRQ_SET_DATA_TYPE_MASK | <S2SV_EndBug> VFIO_IRQ_SET_ACTION_TYPE_MASK ) ) return - EINVAL ; <S2SV_StartBug> if ( ! ( hdr . flags & VFIO_IRQ_SET_DATA_NONE ) ) { <S2SV_EndBug> size_t size ; int max = vfio_pci_get_irq_count ( vdev , hdr . index ) ; <S2SV_StartBug> if ( hdr . flags & VFIO_IRQ_SET_DATA_BOOL ) <S2SV_EndBug> size = sizeof ( uint8_t ) ; else if ( hdr . flags & VFIO_IRQ_SET_DATA_EVENTFD ) size = sizeof ( int32_t ) ; else return - EINVAL ; if ( hdr . argsz - minsz < hdr . count * size || <S2SV_StartBug> hdr . start >= max || hdr . start + hdr . count > max ) <S2SV_EndBug> return - EINVAL ; data = memdup_user ( ( void __user * ) ( arg + minsz ) , hdr . count * size ) ; if ( IS_ERR ( data ) ) return PTR_ERR ( data ) ; } mutex_lock ( & vdev -> igate ) ; ret = vfio_pci_set_irqs_ioctl ( vdev , hdr . flags , hdr . index , hdr . start , hdr . count , data ) ; mutex_unlock ( & vdev -> igate ) ; kfree ( data ) ; return ret ; } else if ( cmd == VFIO_DEVICE_RESET ) { return vdev -> reset_works ? pci_try_reset_function ( vdev -> pdev ) : - EINVAL ; } else if ( cmd == VFIO_DEVICE_GET_PCI_HOT_RESET_INFO ) { struct vfio_pci_hot_reset_info hdr ; struct vfio_pci_fill_info fill = { 0 } ; struct vfio_pci_dependent_device * devices = NULL ; bool slot = false ; int ret = 0 ; minsz = offsetofend ( struct vfio_pci_hot_reset_info , count ) ; if ( copy_from_user ( & hdr , ( void __user * ) arg , minsz ) ) return - EFAULT ; if ( hdr . argsz < minsz ) return - EINVAL ; hdr . flags = 0 ; if ( ! pci_probe_reset_slot ( vdev -> pdev -> slot ) ) slot = true ; else if ( pci_probe_reset_bus ( vdev -> pdev -> bus ) ) return - ENODEV ; ret = vfio_pci_for_each_slot_or_bus ( vdev -> pdev , vfio_pci_count_devs , & fill . max , slot ) ; if ( ret ) return ret ; WARN_ON ( ! fill . max ) ; if ( hdr . argsz < sizeof ( hdr ) + ( fill . max * sizeof ( * devices ) ) ) { ret = - ENOSPC ; hdr . count = fill . max ; goto reset_info_exit ; } devices = kcalloc ( fill . max , sizeof ( * devices ) , GFP_KERNEL ) ; if ( ! devices ) return - ENOMEM ; fill . devices = devices ; ret = vfio_pci_for_each_slot_or_bus ( vdev -> pdev , vfio_pci_fill_devs , & fill , slot ) ; if ( ! ret ) hdr . count = fill . cur ; reset_info_exit : if ( copy_to_user ( ( void __user * ) arg , & hdr , minsz ) ) ret = - EFAULT ; if ( ! ret ) { if ( copy_to_user ( ( void __user * ) ( arg + minsz ) , devices , hdr . count * sizeof ( * devices ) ) ) ret = - EFAULT ; } kfree ( devices ) ; return ret ; } else if ( cmd == VFIO_DEVICE_PCI_HOT_RESET ) { struct vfio_pci_hot_reset hdr ; int32_t * group_fds ; struct vfio_pci_group_entry * groups ; struct vfio_pci_group_info info ; bool slot = false ; int i , count = 0 , ret = 0 ; minsz = offsetofend ( struct vfio_pci_hot_reset , count ) ; if ( copy_from_user ( & hdr , ( void __user * ) arg , minsz ) ) return - EFAULT ; if ( hdr . argsz < minsz || hdr . flags ) return - EINVAL ; if ( ! pci_probe_reset_slot ( vdev -> pdev -> slot ) ) slot = true ; else if ( pci_probe_reset_bus ( vdev -> pdev -> bus ) ) return - ENODEV ; ret = vfio_pci_for_each_slot_or_bus ( vdev -> pdev , vfio_pci_count_devs , & count , slot ) ; if ( ret ) return ret ; if ( ! hdr . count || hdr . count > count ) return - EINVAL ; group_fds = kcalloc ( hdr . count , sizeof ( * group_fds ) , GFP_KERNEL ) ; groups = kcalloc ( hdr . count , sizeof ( * groups ) , GFP_KERNEL ) ; if ( ! group_fds || ! groups ) { kfree ( group_fds ) ; kfree ( groups ) ; return - ENOMEM ; } if ( copy_from_user ( group_fds , ( void __user * ) ( arg + minsz ) , hdr . count * sizeof ( * group_fds ) ) ) { kfree ( group_fds ) ; kfree ( groups ) ; return - EFAULT ; } for ( i = 0 ; i < hdr . count ; i ++ ) { struct vfio_group * group ; struct fd f = fdget ( group_fds [ i ] ) ; if ( ! f . file ) { ret = - EBADF ; break ; } group = vfio_group_get_external_user ( f . file ) ; fdput ( f ) ; if ( IS_ERR ( group ) ) { ret = PTR_ERR ( group ) ; break ; } groups [ i ] . group = group ; groups [ i ] . id = vfio_external_user_iommu_id ( group ) ; } kfree ( group_fds ) ; if ( ret ) goto hot_reset_release ; info . count = hdr . count ; info . groups = groups ; ret = vfio_pci_for_each_slot_or_bus ( vdev -> pdev , vfio_pci_validate_devs , & info , slot ) ; if ( ! ret ) ret = slot ? pci_try_reset_slot ( vdev -> pdev -> slot ) : pci_try_reset_bus ( vdev -> pdev -> bus ) ; hot_reset_release : for ( i -- ; i >= 0 ; i -- ) vfio_group_put_external_user ( groups [ i ] . group ) ; kfree ( groups ) ; return ret ; } return - ENOTTY ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vfio_irq_set hdr ; size_t size ; <S2SV_ModStart> NULL ; int max , <S2SV_ModStart> || hdr . count >= ( U32_MAX - hdr . start ) || hdr . <S2SV_ModStart> - EINVAL ; <S2SV_ModEnd> max = vfio_pci_get_irq_count <S2SV_ModStart> ; if ( <S2SV_ModEnd> hdr . start <S2SV_ModStart> count > max ) return - EINVAL ; switch ( hdr . flags & VFIO_IRQ_SET_DATA_TYPE_MASK ) { case VFIO_IRQ_SET_DATA_NONE : size = 0 ; break ; case VFIO_IRQ_SET_DATA_BOOL : size = sizeof ( uint8_t ) ; break ; case VFIO_IRQ_SET_DATA_EVENTFD : size = sizeof ( int32_t ) ; break ; default : return - EINVAL ; } if ( size ) { if ( hdr . argsz - minsz < hdr . count * size\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9436\n\n```\nCWE-20 int HTMLtagproc1 ( struct parsed_tag * tag , struct html_feed_environ * h_env ) { char * p , * q , * r ; int i , w , x , y , z , count , width ; struct readbuffer * obuf = h_env -> obuf ; struct environment * envs = h_env -> envs ; Str tmp ; int hseq ; int cmd ; # ifdef ID_EXT char * id = NULL ; # endif cmd = tag -> tagid ; if ( obuf -> flag & RB_PRE ) { switch ( cmd ) { case HTML_NOBR : case HTML_N_NOBR : case HTML_PRE_INT : case HTML_N_PRE_INT : return 1 ; } } switch ( cmd ) { case HTML_B : obuf -> in_bold ++ ; if ( obuf -> in_bold > 1 ) return 1 ; return 0 ; case HTML_N_B : if ( obuf -> in_bold == 1 && close_effect0 ( obuf , HTML_B ) ) obuf -> in_bold = 0 ; if ( obuf -> in_bold > 0 ) { obuf -> in_bold -- ; if ( obuf -> in_bold == 0 ) return 0 ; } return 1 ; case HTML_I : obuf -> in_italic ++ ; if ( obuf -> in_italic > 1 ) return 1 ; return 0 ; case HTML_N_I : if ( obuf -> in_italic == 1 && close_effect0 ( obuf , HTML_I ) ) obuf -> in_italic = 0 ; if ( obuf -> in_italic > 0 ) { obuf -> in_italic -- ; if ( obuf -> in_italic == 0 ) return 0 ; } return 1 ; case HTML_U : obuf -> in_under ++ ; if ( obuf -> in_under > 1 ) return 1 ; return 0 ; case HTML_N_U : if ( obuf -> in_under == 1 && close_effect0 ( obuf , HTML_U ) ) obuf -> in_under = 0 ; if ( obuf -> in_under > 0 ) { obuf -> in_under -- ; if ( obuf -> in_under == 0 ) return 0 ; } return 1 ; case HTML_EM : HTMLlineproc1 ( \"<i>\" , h_env ) ; return 1 ; case HTML_N_EM : HTMLlineproc1 ( \"</i>\" , h_env ) ; return 1 ; case HTML_STRONG : HTMLlineproc1 ( \"<b>\" , h_env ) ; return 1 ; case HTML_N_STRONG : HTMLlineproc1 ( \"</b>\" , h_env ) ; return 1 ; case HTML_Q : HTMLlineproc1 ( \"`\" , h_env ) ; return 1 ; case HTML_N_Q : HTMLlineproc1 ( \"\\'\" , h_env ) ; return 1 ; case HTML_P : case HTML_N_P : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 1 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } obuf -> flag |= RB_IGNORE_P ; if ( cmd == HTML_P ) { set_alignment ( obuf , tag ) ; obuf -> flag |= RB_P ; } return 1 ; case HTML_BR : flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 1 , h_env -> limit ) ; h_env -> blank_lines = 0 ; return 1 ; case HTML_H : if ( ! ( obuf -> flag & ( RB_PREMODE | RB_IGNORE_P ) ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } HTMLlineproc1 ( \"<b>\" , h_env ) ; set_alignment ( obuf , tag ) ; return 1 ; case HTML_N_H : HTMLlineproc1 ( \"</b>\" , h_env ) ; if ( ! ( obuf -> flag & RB_PREMODE ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_RESTORE_FLAG ( obuf ) ; close_anchor ( h_env , obuf ) ; obuf -> flag |= RB_IGNORE_P ; return 1 ; case HTML_UL : case HTML_OL : case HTML_BLQ : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! ( obuf -> flag & RB_PREMODE ) && ( h_env -> envc == 0 || cmd == HTML_BLQ ) ) do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } PUSH_ENV ( cmd ) ; if ( cmd == HTML_UL || cmd == HTML_OL ) { if ( parsedtag_get_value ( tag , ATTR_START , & count ) ) { envs [ h_env -> envc ] . count = count - 1 ; } } if ( cmd == HTML_OL ) { envs [ h_env -> envc ] . type = '1' ; if ( parsedtag_get_value ( tag , ATTR_TYPE , & p ) ) { envs [ h_env -> envc ] . type = ( int ) * p ; } } if ( cmd == HTML_UL ) envs [ h_env -> envc ] . type = ul_type ( tag , 0 ) ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; return 1 ; case HTML_N_UL : case HTML_N_OL : case HTML_N_DL : case HTML_N_BLQ : CLOSE_DT ; CLOSE_A ; if ( h_env -> envc > 0 ) { flushline ( h_env , obuf , envs [ h_env -> envc - 1 ] . indent , 0 , h_env -> limit ) ; POP_ENV ; if ( ! ( obuf -> flag & RB_PREMODE ) && ( h_env -> envc == 0 || cmd == HTML_N_DL || cmd == HTML_N_BLQ ) ) { do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , INDENT_INCR , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; } } close_anchor ( h_env , obuf ) ; return 1 ; case HTML_DL : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! ( obuf -> flag & RB_PREMODE ) ) do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } PUSH_ENV ( cmd ) ; if ( parsedtag_exists ( tag , ATTR_COMPACT ) ) envs [ h_env -> envc ] . env = HTML_DL_COMPACT ; obuf -> flag |= RB_IGNORE_P ; return 1 ; case HTML_LI : CLOSE_A ; CLOSE_DT ; if ( h_env -> envc > 0 ) { Str num ; flushline ( h_env , obuf , envs [ h_env -> envc - 1 ] . indent , 0 , h_env -> limit ) ; envs [ h_env -> envc ] . count ++ ; if ( parsedtag_get_value ( tag , ATTR_VALUE , & p ) ) { count = atoi ( p ) ; if ( count > 0 ) envs [ h_env -> envc ] . count = count ; else envs [ h_env -> envc ] . count = 0 ; } switch ( envs [ h_env -> envc ] . env ) { case HTML_UL : envs [ h_env -> envc ] . type = ul_type ( tag , envs [ h_env -> envc ] . type ) ; for ( i = 0 ; i < INDENT_INCR - 3 ; i ++ ) push_charp ( obuf , 1 , NBSP , PC_ASCII ) ; tmp = Strnew ( ) ; switch ( envs [ h_env -> envc ] . type ) { case 'd' : push_symbol ( tmp , UL_SYMBOL_DISC , symbol_width , 1 ) ; break ; case 'c' : push_symbol ( tmp , UL_SYMBOL_CIRCLE , symbol_width , 1 ) ; break ; case 's' : push_symbol ( tmp , UL_SYMBOL_SQUARE , symbol_width , 1 ) ; break ; default : push_symbol ( tmp , UL_SYMBOL ( ( h_env -> envc_real - 1 ) % MAX_UL_LEVEL ) , symbol_width , 1 ) ; break ; } if ( symbol_width == 1 ) push_charp ( obuf , 1 , NBSP , PC_ASCII ) ; push_str ( obuf , symbol_width , tmp , PC_ASCII ) ; push_charp ( obuf , 1 , NBSP , PC_ASCII ) ; set_space_to_prevchar ( obuf -> prevchar ) ; break ; case HTML_OL : if ( parsedtag_get_value ( tag , ATTR_TYPE , & p ) ) envs [ h_env -> envc ] . type = ( int ) * p ; switch ( ( envs [ h_env -> envc ] . count > 0 ) ? envs [ h_env -> envc ] . type : '1' ) { case 'i' : num = romanNumeral ( envs [ h_env -> envc ] . count ) ; break ; case 'I' : num = romanNumeral ( envs [ h_env -> envc ] . count ) ; Strupper ( num ) ; break ; case 'a' : num = romanAlphabet ( envs [ h_env -> envc ] . count ) ; break ; case 'A' : num = romanAlphabet ( envs [ h_env -> envc ] . count ) ; Strupper ( num ) ; break ; default : num = Sprintf ( \"%d\" , envs [ h_env -> envc ] . count ) ; break ; } if ( INDENT_INCR >= 4 ) Strcat_charp ( num , \".<S2SV_blank>\" ) ; else Strcat_char ( num , '.' ) ; push_spaces ( obuf , 1 , INDENT_INCR - num -> length ) ; push_str ( obuf , num -> length , num , PC_ASCII ) ; if ( INDENT_INCR >= 4 ) set_space_to_prevchar ( obuf -> prevchar ) ; break ; default : push_spaces ( obuf , 1 , INDENT_INCR ) ; break ; } } else { flushline ( h_env , obuf , 0 , 0 , h_env -> limit ) ; } obuf -> flag |= RB_IGNORE_P ; return 1 ; case HTML_DT : CLOSE_A ; if ( h_env -> envc == 0 || ( h_env -> envc_real < h_env -> nenv && envs [ h_env -> envc ] . env != HTML_DL && envs [ h_env -> envc ] . env != HTML_DL_COMPACT ) ) { PUSH_ENV ( HTML_DL ) ; } if ( h_env -> envc > 0 ) { flushline ( h_env , obuf , envs [ h_env -> envc - 1 ] . indent , 0 , h_env -> limit ) ; } if ( ! ( obuf -> flag & RB_IN_DT ) ) { HTMLlineproc1 ( \"<b>\" , h_env ) ; obuf -> flag |= RB_IN_DT ; } obuf -> flag |= RB_IGNORE_P ; return 1 ; case HTML_DD : CLOSE_A ; CLOSE_DT ; <S2SV_StartBug> if ( envs [ h_env -> envc ] . env == HTML_DL_COMPACT ) { <S2SV_EndBug> if ( obuf -> pos > envs [ h_env -> envc ] . indent ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; else push_spaces ( obuf , 1 , envs [ h_env -> envc ] . indent - obuf -> pos ) ; } else flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; return 1 ; case HTML_TITLE : close_anchor ( h_env , obuf ) ; process_title ( tag ) ; obuf -> flag |= RB_TITLE ; obuf -> end_tag = HTML_N_TITLE ; return 1 ; case HTML_N_TITLE : if ( ! ( obuf -> flag & RB_TITLE ) ) return 1 ; obuf -> flag &= ~ RB_TITLE ; obuf -> end_tag = 0 ; tmp = process_n_title ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_TITLE_ALT : if ( parsedtag_get_value ( tag , ATTR_TITLE , & p ) ) h_env -> title = html_unquote ( p ) ; return 0 ; case HTML_FRAMESET : PUSH_ENV ( cmd ) ; push_charp ( obuf , 9 , \"--FRAME--\" , PC_ASCII ) ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; return 0 ; case HTML_N_FRAMESET : if ( h_env -> envc > 0 ) { POP_ENV ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } return 0 ; case HTML_NOFRAMES : CLOSE_A ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= ( RB_NOFRAMES | RB_IGNORE_P ) ; return 1 ; case HTML_N_NOFRAMES : CLOSE_A ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag &= ~ RB_NOFRAMES ; return 1 ; case HTML_FRAME : q = r = NULL ; parsedtag_get_value ( tag , ATTR_SRC , & q ) ; parsedtag_get_value ( tag , ATTR_NAME , & r ) ; if ( q ) { q = html_quote ( q ) ; push_tag ( obuf , Sprintf ( \"<a<S2SV_blank>hseq=\\\\\"%d\\\\\"<S2SV_blank>href=\\\\\"%s\\\\\">\" , cur_hseq ++ , q ) -> ptr , HTML_A ) ; if ( r ) q = html_quote ( r ) ; push_charp ( obuf , get_strwidth ( q ) , q , PC_ASCII ) ; push_tag ( obuf , \"</a>\" , HTML_N_A ) ; } flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; return 0 ; case HTML_HR : close_anchor ( h_env , obuf ) ; tmp = process_hr ( tag , h_env -> limit , envs [ h_env -> envc ] . indent ) ; HTMLlineproc1 ( tmp -> ptr , h_env ) ; set_space_to_prevchar ( obuf -> prevchar ) ; return 1 ; case HTML_PRE : x = parsedtag_exists ( tag , ATTR_FOR_TABLE ) ; CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! x ) do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } else fillline ( obuf , envs [ h_env -> envc ] . indent ) ; obuf -> flag |= ( RB_PRE | RB_IGNORE_P ) ; return 1 ; case HTML_N_PRE : flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; h_env -> blank_lines ++ ; } obuf -> flag &= ~ RB_PRE ; close_anchor ( h_env , obuf ) ; return 1 ; case HTML_PRE_INT : i = obuf -> line -> length ; append_tags ( obuf ) ; if ( ! ( obuf -> flag & RB_SPECIAL ) ) { set_breakpoint ( obuf , obuf -> line -> length - i ) ; } obuf -> flag |= RB_PRE_INT ; return 0 ; case HTML_N_PRE_INT : push_tag ( obuf , \"</pre_int>\" , HTML_N_PRE_INT ) ; obuf -> flag &= ~ RB_PRE_INT ; if ( ! ( obuf -> flag & RB_SPECIAL ) && obuf -> pos > obuf -> bp . pos ) { set_prevchar ( obuf -> prevchar , \"\" , 0 ) ; obuf -> prev_ctype = PC_CTRL ; } return 1 ; case HTML_NOBR : obuf -> flag |= RB_NOBR ; obuf -> nobr_level ++ ; return 0 ; case HTML_N_NOBR : if ( obuf -> nobr_level > 0 ) obuf -> nobr_level -- ; if ( obuf -> nobr_level == 0 ) obuf -> flag &= ~ RB_NOBR ; return 0 ; case HTML_PRE_PLAIN : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } obuf -> flag |= ( RB_PRE | RB_IGNORE_P ) ; return 1 ; case HTML_N_PRE_PLAIN : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; } obuf -> flag &= ~ RB_PRE ; return 1 ; case HTML_LISTING : case HTML_XMP : case HTML_PLAINTEXT : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; } obuf -> flag |= ( RB_PLAIN | RB_IGNORE_P ) ; switch ( cmd ) { case HTML_LISTING : obuf -> end_tag = HTML_N_LISTING ; break ; case HTML_XMP : obuf -> end_tag = HTML_N_XMP ; break ; case HTML_PLAINTEXT : obuf -> end_tag = MAX_HTMLTAG ; break ; } return 1 ; case HTML_N_LISTING : case HTML_N_XMP : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) { flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; } obuf -> flag &= ~ RB_PLAIN ; obuf -> end_tag = 0 ; return 1 ; case HTML_SCRIPT : obuf -> flag |= RB_SCRIPT ; obuf -> end_tag = HTML_N_SCRIPT ; return 1 ; case HTML_STYLE : obuf -> flag |= RB_STYLE ; obuf -> end_tag = HTML_N_STYLE ; return 1 ; case HTML_N_SCRIPT : obuf -> flag &= ~ RB_SCRIPT ; obuf -> end_tag = 0 ; return 1 ; case HTML_N_STYLE : obuf -> flag &= ~ RB_STYLE ; obuf -> end_tag = 0 ; return 1 ; case HTML_A : if ( obuf -> anchor . url ) close_anchor ( h_env , obuf ) ; hseq = 0 ; if ( parsedtag_get_value ( tag , ATTR_HREF , & p ) ) obuf -> anchor . url = Strnew_charp ( p ) -> ptr ; if ( parsedtag_get_value ( tag , ATTR_TARGET , & p ) ) obuf -> anchor . target = Strnew_charp ( p ) -> ptr ; if ( parsedtag_get_value ( tag , ATTR_REFERER , & p ) ) obuf -> anchor . referer = Strnew_charp ( p ) -> ptr ; if ( parsedtag_get_value ( tag , ATTR_TITLE , & p ) ) obuf -> anchor . title = Strnew_charp ( p ) -> ptr ; if ( parsedtag_get_value ( tag , ATTR_ACCESSKEY , & p ) ) obuf -> anchor . accesskey = ( unsigned char ) * p ; if ( parsedtag_get_value ( tag , ATTR_HSEQ , & hseq ) ) obuf -> anchor . hseq = hseq ; if ( hseq == 0 && obuf -> anchor . url ) { obuf -> anchor . hseq = cur_hseq ; tmp = process_anchor ( tag , h_env -> tagbuf -> ptr ) ; push_tag ( obuf , tmp -> ptr , HTML_A ) ; if ( displayLinkNumber ) HTMLlineproc1 ( getLinkNumberStr ( - 1 ) -> ptr , h_env ) ; return 1 ; } return 0 ; case HTML_N_A : close_anchor ( h_env , obuf ) ; return 1 ; case HTML_IMG : tmp = process_img ( tag , h_env -> limit ) ; HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_IMG_ALT : if ( parsedtag_get_value ( tag , ATTR_SRC , & p ) ) obuf -> img_alt = Strnew_charp ( p ) ; # ifdef USE_IMAGE i = 0 ; if ( parsedtag_get_value ( tag , ATTR_TOP_MARGIN , & i ) ) { if ( i > obuf -> top_margin ) obuf -> top_margin = i ; } i = 0 ; if ( parsedtag_get_value ( tag , ATTR_BOTTOM_MARGIN , & i ) ) { if ( i > obuf -> bottom_margin ) obuf -> bottom_margin = i ; } # endif return 0 ; case HTML_N_IMG_ALT : if ( obuf -> img_alt ) { if ( ! close_effect0 ( obuf , HTML_IMG_ALT ) ) push_tag ( obuf , \"</img_alt>\" , HTML_N_IMG_ALT ) ; obuf -> img_alt = NULL ; } return 1 ; case HTML_INPUT_ALT : i = 0 ; if ( parsedtag_get_value ( tag , ATTR_TOP_MARGIN , & i ) ) { if ( i > obuf -> top_margin ) obuf -> top_margin = i ; } i = 0 ; if ( parsedtag_get_value ( tag , ATTR_BOTTOM_MARGIN , & i ) ) { if ( i > obuf -> bottom_margin ) obuf -> bottom_margin = i ; } if ( parsedtag_get_value ( tag , ATTR_HSEQ , & hseq ) ) { obuf -> input_alt . hseq = hseq ; } if ( parsedtag_get_value ( tag , ATTR_FID , & i ) ) { obuf -> input_alt . fid = i ; } if ( parsedtag_get_value ( tag , ATTR_TYPE , & p ) ) { obuf -> input_alt . type = Strnew_charp ( p ) ; } if ( parsedtag_get_value ( tag , ATTR_VALUE , & p ) ) { obuf -> input_alt . value = Strnew_charp ( p ) ; } if ( parsedtag_get_value ( tag , ATTR_NAME , & p ) ) { obuf -> input_alt . name = Strnew_charp ( p ) ; } obuf -> input_alt . in = 1 ; return 0 ; case HTML_N_INPUT_ALT : if ( obuf -> input_alt . in ) { if ( ! close_effect0 ( obuf , HTML_INPUT_ALT ) ) push_tag ( obuf , \"</input_alt>\" , HTML_N_INPUT_ALT ) ; obuf -> input_alt . hseq = 0 ; obuf -> input_alt . fid = - 1 ; obuf -> input_alt . in = 0 ; obuf -> input_alt . type = NULL ; obuf -> input_alt . name = NULL ; obuf -> input_alt . value = NULL ; } return 1 ; case HTML_TABLE : close_anchor ( h_env , obuf ) ; obuf -> table_level ++ ; if ( obuf -> table_level >= MAX_TABLE ) break ; w = BORDER_NONE ; x = 2 ; y = 1 ; z = 0 ; width = 0 ; if ( parsedtag_exists ( tag , ATTR_BORDER ) ) { if ( parsedtag_get_value ( tag , ATTR_BORDER , & w ) ) { if ( w > 2 ) w = BORDER_THICK ; else if ( w < 0 ) { w = BORDER_THIN ; } } else w = BORDER_THIN ; } if ( DisplayBorders && w == BORDER_NONE ) w = BORDER_THIN ; if ( parsedtag_get_value ( tag , ATTR_WIDTH , & i ) ) { if ( obuf -> table_level == 0 ) width = REAL_WIDTH ( i , h_env -> limit - envs [ h_env -> envc ] . indent ) ; else width = RELATIVE_WIDTH ( i ) ; } if ( parsedtag_exists ( tag , ATTR_HBORDER ) ) w = BORDER_NOWIN ; # define MAX_CELLSPACING 1000 # define MAX_CELLPADDING 1000 # define MAX_VSPACE 1000 parsedtag_get_value ( tag , ATTR_CELLSPACING , & x ) ; parsedtag_get_value ( tag , ATTR_CELLPADDING , & y ) ; parsedtag_get_value ( tag , ATTR_VSPACE , & z ) ; if ( x > MAX_CELLSPACING ) x = MAX_CELLSPACING ; if ( y > MAX_CELLPADDING ) y = MAX_CELLPADDING ; if ( z > MAX_VSPACE ) z = MAX_VSPACE ; # ifdef ID_EXT parsedtag_get_value ( tag , ATTR_ID , & id ) ; # endif tables [ obuf -> table_level ] = begin_table ( w , x , y , z ) ; # ifdef ID_EXT if ( id != NULL ) tables [ obuf -> table_level ] -> id = Strnew_charp ( id ) ; # endif table_mode [ obuf -> table_level ] . pre_mode = 0 ; table_mode [ obuf -> table_level ] . indent_level = 0 ; table_mode [ obuf -> table_level ] . nobr_level = 0 ; table_mode [ obuf -> table_level ] . caption = 0 ; table_mode [ obuf -> table_level ] . end_tag = 0 ; # ifndef TABLE_EXPAND tables [ obuf -> table_level ] -> total_width = width ; # else tables [ obuf -> table_level ] -> real_width = width ; tables [ obuf -> table_level ] -> total_width = 0 ; # endif return 1 ; case HTML_N_TABLE : return 1 ; case HTML_CENTER : CLOSE_A ; if ( ! ( obuf -> flag & ( RB_PREMODE | RB_IGNORE_P ) ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_SAVE_FLAG ( obuf ) ; RB_SET_ALIGN ( obuf , RB_CENTER ) ; return 1 ; case HTML_N_CENTER : CLOSE_A ; if ( ! ( obuf -> flag & RB_PREMODE ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_RESTORE_FLAG ( obuf ) ; return 1 ; case HTML_DIV : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; set_alignment ( obuf , tag ) ; return 1 ; case HTML_N_DIV : CLOSE_A ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_RESTORE_FLAG ( obuf ) ; return 1 ; case HTML_DIV_INT : CLOSE_P ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; set_alignment ( obuf , tag ) ; return 1 ; case HTML_N_DIV_INT : CLOSE_P ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; RB_RESTORE_FLAG ( obuf ) ; return 1 ; case HTML_FORM : CLOSE_A ; if ( ! ( obuf -> flag & RB_IGNORE_P ) ) flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; tmp = process_form ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_N_FORM : CLOSE_A ; flushline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; obuf -> flag |= RB_IGNORE_P ; process_n_form ( ) ; return 1 ; case HTML_INPUT : close_anchor ( h_env , obuf ) ; tmp = process_input ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_BUTTON : tmp = process_button ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_N_BUTTON : tmp = process_n_button ( ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_SELECT : close_anchor ( h_env , obuf ) ; tmp = process_select ( tag ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; obuf -> flag |= RB_INSELECT ; obuf -> end_tag = HTML_N_SELECT ; return 1 ; case HTML_N_SELECT : obuf -> flag &= ~ RB_INSELECT ; obuf -> end_tag = 0 ; tmp = process_n_select ( ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_OPTION : return 1 ; case HTML_TEXTAREA : close_anchor ( h_env , obuf ) ; tmp = process_textarea ( tag , h_env -> limit ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; obuf -> flag |= RB_INTXTA ; obuf -> end_tag = HTML_N_TEXTAREA ; return 1 ; case HTML_N_TEXTAREA : obuf -> flag &= ~ RB_INTXTA ; obuf -> end_tag = 0 ; tmp = process_n_textarea ( ) ; if ( tmp ) HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_ISINDEX : p = \"\" ; q = \"!CURRENT_URL!\" ; parsedtag_get_value ( tag , ATTR_PROMPT , & p ) ; parsedtag_get_value ( tag , ATTR_ACTION , & q ) ; tmp = Strnew_m_charp ( \"<form<S2SV_blank>method=get<S2SV_blank>action=\\\\\"\" , html_quote ( q ) , \"\\\\\">\" , html_quote ( p ) , \"<input<S2SV_blank>type=text<S2SV_blank>name=\\\\\"\\\\\"<S2SV_blank>accept></form>\" , NULL ) ; HTMLlineproc1 ( tmp -> ptr , h_env ) ; return 1 ; case HTML_META : p = q = r = NULL ; parsedtag_get_value ( tag , ATTR_HTTP_EQUIV , & p ) ; parsedtag_get_value ( tag , ATTR_CONTENT , & q ) ; # ifdef USE_M17N parsedtag_get_value ( tag , ATTR_CHARSET , & r ) ; if ( r ) { SKIP_BLANKS ( r ) ; meta_charset = wc_guess_charset ( r , 0 ) ; } else if ( p && q && ! strcasecmp ( p , \"Content-Type\" ) && ( q = strcasestr ( q , \"charset\" ) ) != NULL ) { q += 7 ; SKIP_BLANKS ( q ) ; if ( * q == '=' ) { q ++ ; SKIP_BLANKS ( q ) ; meta_charset = wc_guess_charset ( q , 0 ) ; } } else # endif if ( p && q && ! strcasecmp ( p , \"refresh\" ) ) { int refresh_interval ; tmp = NULL ; refresh_interval = getMetaRefreshParam ( q , & tmp ) ; if ( tmp ) { q = html_quote ( tmp -> ptr ) ; tmp = Sprintf ( \"Refresh<S2SV_blank>(%d<S2SV_blank>sec)<S2SV_blank><a<S2SV_blank>href=\\\\\"%s\\\\\">%s</a>\" , refresh_interval , q , q ) ; } else if ( refresh_interval > 0 ) tmp = Sprintf ( \"Refresh<S2SV_blank>(%d<S2SV_blank>sec)\" , refresh_interval ) ; if ( tmp ) { HTMLlineproc1 ( tmp -> ptr , h_env ) ; do_blankline ( h_env , obuf , envs [ h_env -> envc ] . indent , 0 , h_env -> limit ) ; if ( ! is_redisplay && ! ( ( obuf -> flag & RB_NOFRAMES ) && RenderFrame ) ) { tag -> need_reconstruct = TRUE ; return 0 ; } } } return 1 ; case HTML_BASE : # if defined ( USE_M17N ) || defined ( USE_IMAGE ) p = NULL ; if ( parsedtag_get_value ( tag , ATTR_HREF , & p ) ) { cur_baseURL = New ( ParsedURL ) ; parseURL ( p , cur_baseURL , NULL ) ; } # endif case HTML_MAP : case HTML_N_MAP : case HTML_AREA : return 0 ; case HTML_DEL : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : obuf -> flag |= RB_DEL ; break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>[DEL:</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : obuf -> in_strike ++ ; if ( obuf -> in_strike == 1 ) { push_tag ( obuf , \"<s>\" , HTML_S ) ; } break ; } return 1 ; case HTML_N_DEL : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : obuf -> flag &= ~ RB_DEL ; break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>:DEL]</U>\" , h_env ) ; case DISPLAY_INS_DEL_FONTIFY : if ( obuf -> in_strike == 0 ) return 1 ; if ( obuf -> in_strike == 1 && close_effect0 ( obuf , HTML_S ) ) obuf -> in_strike = 0 ; if ( obuf -> in_strike > 0 ) { obuf -> in_strike -- ; if ( obuf -> in_strike == 0 ) { push_tag ( obuf , \"</s>\" , HTML_N_S ) ; } } break ; } return 1 ; case HTML_S : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : obuf -> flag |= RB_S ; break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>[S:</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : obuf -> in_strike ++ ; if ( obuf -> in_strike == 1 ) { push_tag ( obuf , \"<s>\" , HTML_S ) ; } break ; } return 1 ; case HTML_N_S : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : obuf -> flag &= ~ RB_S ; break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>:S]</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : if ( obuf -> in_strike == 0 ) return 1 ; if ( obuf -> in_strike == 1 && close_effect0 ( obuf , HTML_S ) ) obuf -> in_strike = 0 ; if ( obuf -> in_strike > 0 ) { obuf -> in_strike -- ; if ( obuf -> in_strike == 0 ) { push_tag ( obuf , \"</s>\" , HTML_N_S ) ; } } } return 1 ; case HTML_INS : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>[INS:</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : obuf -> in_ins ++ ; if ( obuf -> in_ins == 1 ) { push_tag ( obuf , \"<ins>\" , HTML_INS ) ; } break ; } return 1 ; case HTML_N_INS : switch ( displayInsDel ) { case DISPLAY_INS_DEL_SIMPLE : break ; case DISPLAY_INS_DEL_NORMAL : HTMLlineproc1 ( \"<U>:INS]</U>\" , h_env ) ; break ; case DISPLAY_INS_DEL_FONTIFY : if ( obuf -> in_ins == 0 ) return 1 ; if ( obuf -> in_ins == 1 && close_effect0 ( obuf , HTML_INS ) ) obuf -> in_ins = 0 ; if ( obuf -> in_ins > 0 ) { obuf -> in_ins -- ; if ( obuf -> in_ins == 0 ) { push_tag ( obuf , \"</ins>\" , HTML_N_INS ) ; } } break ; } return 1 ; case HTML_SUP : if ( ! ( obuf -> flag & ( RB_DEL | RB_S ) ) ) HTMLlineproc1 ( \"^\" , h_env ) ; return 1 ; case HTML_N_SUP : return 1 ; case HTML_SUB : if ( ! ( obuf -> flag & ( RB_DEL | RB_S ) ) ) HTMLlineproc1 ( \"[\" , h_env ) ; return 1 ; case HTML_N_SUB : if ( ! ( obuf -> flag & ( RB_DEL | RB_S ) ) ) HTMLlineproc1 ( \"]\" , h_env ) ; return 1 ; case HTML_FONT : case HTML_N_FONT : case HTML_NOP : return 1 ; case HTML_BGSOUND : if ( view_unseenobject ) { if ( parsedtag_get_value ( tag , ATTR_SRC , & p ) ) { Str s ; q = html_quote ( p ) ; s = Sprintf ( \"<A<S2SV_blank>HREF=\\\\\"%s\\\\\">bgsound(%s)</A>\" , q , q ) ; HTMLlineproc1 ( s -> ptr , h_env ) ; } } return 1 ; case HTML_EMBED : if ( view_unseenobject ) { if ( parsedtag_get_value ( tag , ATTR_SRC , & p ) ) { Str s ; q = html_quote ( p ) ; s = Sprintf ( \"<A<S2SV_blank>HREF=\\\\\"%s\\\\\">embed(%s)</A>\" , q , q ) ; HTMLlineproc1 ( s -> ptr , h_env ) ; } } return 1 ; case HTML_APPLET : if ( view_unseenobject ) { if ( parsedtag_get_value ( tag , ATTR_ARCHIVE , & p ) ) { Str s ; q = html_quote ( p ) ; s = Sprintf ( \"<A<S2SV_blank>HREF=\\\\\"%s\\\\\">applet<S2SV_blank>archive(%s)</A>\" , q , q ) ; HTMLlineproc1 ( s -> ptr , h_env ) ; } } return 1 ; case HTML_BODY : if ( view_unseenobject ) { if ( parsedtag_get_value ( tag , ATTR_BACKGROUND , & p ) ) { Str s ; q = html_quote ( p ) ; s = Sprintf ( \"<IMG<S2SV_blank>SRC=\\\\\"%s\\\\\"<S2SV_blank>ALT=\\\\\"bg<S2SV_blank>image(%s)\\\\\"><BR>\" , q , q ) ; HTMLlineproc1 ( s -> ptr , h_env ) ; } } case HTML_N_HEAD : if ( obuf -> flag & RB_TITLE ) HTMLlineproc1 ( \"</title>\" , h_env ) ; case HTML_HEAD : case HTML_N_BODY : return 1 ; default : return 0 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( h_env -> envc == 0 || ( h_env -> envc_real < h_env -> nenv && envs [ h_env -> envc ] . env != HTML_DL && envs [ h_env -> envc ] . env != HTML_DL_COMPACT ) ) { PUSH_ENV ( HTML_DL ) ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16645\n\n```\nCWE-125 static const struct usb_cdc_union_desc * ims_pcu_get_cdc_union_desc ( struct usb_interface * intf ) { const void * buf = intf -> altsetting -> extra ; size_t buflen = intf -> altsetting -> extralen ; struct usb_cdc_union_desc * union_desc ; if ( ! buf ) { dev_err ( & intf -> dev , \"Missing<S2SV_blank>descriptor<S2SV_blank>data\\\\n\" ) ; return NULL ; } if ( ! buflen ) { dev_err ( & intf -> dev , \"Zero<S2SV_blank>length<S2SV_blank>descriptor\\\\n\" ) ; return NULL ; } <S2SV_StartBug> while ( buflen > 0 ) { <S2SV_EndBug> union_desc = ( struct usb_cdc_union_desc * ) buf ; if ( union_desc -> bDescriptorType == USB_DT_CS_INTERFACE && union_desc -> bDescriptorSubType == USB_CDC_UNION_TYPE ) { dev_dbg ( & intf -> dev , \"Found<S2SV_blank>union<S2SV_blank>header\\\\n\" ) ; <S2SV_StartBug> return union_desc ; <S2SV_EndBug> } buflen -= union_desc -> bLength ; buf += union_desc -> bLength ; } dev_err ( & intf -> dev , \"Missing<S2SV_blank>CDC<S2SV_blank>union<S2SV_blank>descriptor\\\\n\" ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> while ( buflen >= sizeof ( * union_desc ) ) { union_desc = ( struct usb_cdc_union_desc * ) buf ; if ( union_desc -> bLength > buflen ) { dev_err ( & intf -> dev , \"Too<S2SV_blank>large<S2SV_blank>descriptor\\\\n\" ) ; return NULL ; } <S2SV_ModEnd> if ( union_desc <S2SV_ModStart> \"Found<S2SV_blank>union<S2SV_blank>header\\\\n\" ) ; if ( union_desc -> bLength >= sizeof ( * union_desc ) ) return union_desc ; dev_err ( & intf -> dev , \"Union<S2SV_blank>descriptor<S2SV_blank>to<S2SV_blank>short<S2SV_blank>(%d<S2SV_blank>vs<S2SV_blank>%zd\\\\n)\" , union_desc -> bLength , sizeof ( * union_desc ) ) ; return NULL <S2SV_ModEnd> ; } buflen\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11668\n\n```\nCWE-476 static int sd_isoc_init ( struct gspca_dev * gspca_dev ) <S2SV_StartBug> { <S2SV_EndBug> struct usb_host_interface * alt ; int max_packet_size ; switch ( gspca_dev -> pixfmt . width ) { case 160 : max_packet_size = 450 ; break ; case 176 : max_packet_size = 600 ; break ; default : max_packet_size = 1022 ; break ; } <S2SV_StartBug> alt = & gspca_dev -> dev -> actconfig -> intf_cache [ 0 ] -> altsetting [ 1 ] ; <S2SV_EndBug> alt -> endpoint [ 0 ] . desc . wMaxPacketSize = cpu_to_le16 ( max_packet_size ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gspca_dev ) { struct usb_interface_cache * intfc ; <S2SV_ModStart> break ; } intfc = <S2SV_ModEnd> gspca_dev -> dev <S2SV_ModStart> [ 0 ] ; if ( intfc -> num_altsetting < 2 ) return - ENODEV ; alt = & intfc <S2SV_ModStart> [ 1 ] ; if ( alt -> desc . bNumEndpoints < 1 ) return - ENODEV\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14284\n\n```\nCWE-369 static void setup_format_params ( int track ) { int n ; int il ; int count ; int head_shift ; int track_shift ; struct fparm { unsigned char track , head , sect , size ; } * here = ( struct fparm * ) floppy_track_buffer ; raw_cmd = & default_raw_cmd ; raw_cmd -> track = track ; raw_cmd -> flags = ( FD_RAW_WRITE | FD_RAW_INTR | FD_RAW_SPIN | FD_RAW_NEED_DISK | FD_RAW_NEED_SEEK ) ; raw_cmd -> rate = _floppy -> rate & 0x43 ; raw_cmd -> cmd_count = NR_F ; COMMAND = FM_MODE ( _floppy , FD_FORMAT ) ; DR_SELECT = UNIT ( current_drive ) + PH_HEAD ( _floppy , format_req . head ) ; F_SIZECODE = FD_SIZECODE ( _floppy ) ; F_SECT_PER_TRACK = _floppy -> sect << 2 >> F_SIZECODE ; F_GAP = _floppy -> fmt_gap ; F_FILL = FD_FILL_BYTE ; raw_cmd -> kernel_data = floppy_track_buffer ; raw_cmd -> length = 4 * F_SECT_PER_TRACK ; <S2SV_StartBug> head_shift = ( F_SECT_PER_TRACK + 5 ) / 6 ; <S2SV_EndBug> track_shift = 2 * head_shift + 3 ; n = ( track_shift * format_req . track + head_shift * format_req . head ) % F_SECT_PER_TRACK ; il = 1 ; if ( _floppy -> fmt_gap < 0x22 ) il ++ ; for ( count = 0 ; count < F_SECT_PER_TRACK ; ++ count ) { here [ count ] . track = format_req . track ; here [ count ] . head = format_req . head ; here [ count ] . sect = 0 ; here [ count ] . size = F_SIZECODE ; } for ( count = 1 ; count <= F_SECT_PER_TRACK ; ++ count ) { here [ n ] . sect = count ; n = ( n + il ) % F_SECT_PER_TRACK ; if ( here [ n ] . sect ) { ++ n ; if ( n >= F_SECT_PER_TRACK ) { n -= F_SECT_PER_TRACK ; while ( here [ n ] . sect ) ++ n ; } } } if ( _floppy -> stretch & FD_SECTBASEMASK ) { for ( count = 0 ; count < F_SECT_PER_TRACK ; count ++ ) here [ count ] . sect += FD_SECTBASE ( _floppy ) - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * F_SECT_PER_TRACK ; if ( ! F_SECT_PER_TRACK ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1828\n\n```\nCWE-20 static int sctp_getsockopt_assoc_stats ( struct sock * sk , int len , char __user * optval , int __user * optlen ) { struct sctp_assoc_stats sas ; struct sctp_association * asoc = NULL ; if ( len < sizeof ( sctp_assoc_t ) ) return - EINVAL ; <S2SV_StartBug> if ( copy_from_user ( & sas , optval , len ) ) <S2SV_EndBug> return - EFAULT ; asoc = sctp_id2assoc ( sk , sas . sas_assoc_id ) ; if ( ! asoc ) return - EINVAL ; sas . sas_rtxchunks = asoc -> stats . rtxchunks ; sas . sas_gapcnt = asoc -> stats . gapcnt ; sas . sas_outofseqtsns = asoc -> stats . outofseqtsns ; sas . sas_osacks = asoc -> stats . osacks ; sas . sas_isacks = asoc -> stats . isacks ; sas . sas_octrlchunks = asoc -> stats . octrlchunks ; sas . sas_ictrlchunks = asoc -> stats . ictrlchunks ; sas . sas_oodchunks = asoc -> stats . oodchunks ; sas . sas_iodchunks = asoc -> stats . iodchunks ; sas . sas_ouodchunks = asoc -> stats . ouodchunks ; sas . sas_iuodchunks = asoc -> stats . iuodchunks ; sas . sas_idupchunks = asoc -> stats . idupchunks ; sas . sas_opackets = asoc -> stats . opackets ; sas . sas_ipackets = asoc -> stats . ipackets ; sas . sas_maxrto = asoc -> stats . max_obs_rto ; memcpy ( & sas . sas_obs_rto_ipaddr , & asoc -> stats . obs_rto_ipaddr , sizeof ( struct sockaddr_storage ) ) ; asoc -> stats . max_obs_rto = asoc -> rto_min ; <S2SV_StartBug> len = min_t ( size_t , len , sizeof ( sas ) ) ; <S2SV_EndBug> if ( put_user ( len , optlen ) ) return - EFAULT ; SCTP_DEBUG_PRINTK ( \"sctp_getsockopt_assoc_stat(%d):<S2SV_blank>%d\\\\n\" , len , sas . sas_assoc_id ) ; if ( copy_to_user ( optval , & sas , len ) ) return - EFAULT ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - EINVAL ; len = min_t ( size_t , len , sizeof ( sas ) ) ; <S2SV_ModStart> -> rto_min ; <S2SV_ModEnd> if ( put_user\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4591\n\n```\nCWE-119 static ssize_t __nfs4_get_acl_uncached ( struct inode * inode , void * buf , size_t buflen ) { struct page * pages [ NFS4ACL_MAXPAGES ] = { NULL , } ; struct nfs_getaclargs args = { . fh = NFS_FH ( inode ) , . acl_pages = pages , . acl_len = buflen , } ; struct nfs_getaclres res = { . acl_len = buflen , } ; struct rpc_message msg = { . rpc_proc = & nfs4_procedures [ NFSPROC4_CLNT_GETACL ] , . rpc_argp = & args , . rpc_resp = & res , } ; unsigned int npages = DIV_ROUND_UP ( buflen , PAGE_SIZE ) ; int ret = - ENOMEM , i ; if ( npages == 0 ) npages = 1 ; if ( npages > ARRAY_SIZE ( pages ) ) return - ERANGE ; for ( i = 0 ; i < npages ; i ++ ) { pages [ i ] = alloc_page ( GFP_KERNEL ) ; if ( ! pages [ i ] ) goto out_free ; } res . acl_scratch = alloc_page ( GFP_KERNEL ) ; if ( ! res . acl_scratch ) goto out_free ; args . acl_len = npages * PAGE_SIZE ; args . acl_pgbase = 0 ; dprintk ( \"%s<S2SV_blank><S2SV_blank>buf<S2SV_blank>%p<S2SV_blank>buflen<S2SV_blank>%zu<S2SV_blank>npages<S2SV_blank>%d<S2SV_blank>args.acl_len<S2SV_blank>%zu\\\\n\" , __func__ , buf , buflen , npages , args . acl_len ) ; ret = nfs4_call_sync ( NFS_SERVER ( inode ) -> client , NFS_SERVER ( inode ) , & msg , & args . seq_args , & res . seq_res , 0 ) ; if ( ret ) goto out_free ; if ( res . acl_flags & NFS4_ACL_TRUNC ) { if ( buf == NULL ) goto out_ok ; ret = - ERANGE ; goto out_free ; } nfs4_write_cached_acl ( inode , pages , res . acl_data_offset , res . acl_len ) ; <S2SV_StartBug> if ( buf ) <S2SV_EndBug> <S2SV_StartBug> _copy_from_pages ( buf , pages , res . acl_data_offset , res . acl_len ) ; <S2SV_EndBug> out_ok : ret = res . acl_len ; out_free : for ( i = 0 ; i < npages ; i ++ ) if ( pages [ i ] ) __free_page ( pages [ i ] ) ; if ( res . acl_scratch ) __free_page ( res . acl_scratch ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( buf ) { if ( res . acl_len > buflen ) { ret = - ERANGE ; goto out_free ; } <S2SV_ModStart> acl_len ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5940\n\n```\nCWE-269 static void copy_xauthority ( void ) { char * src = RUN_XAUTHORITY_FILE ; char * dest ; if ( asprintf ( & dest , \"%s/.Xauthority\" , cfg . homedir ) == - 1 ) errExit ( \"asprintf\" ) ; if ( is_link ( dest ) ) { fprintf ( stderr , \"Error:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symbolic<S2SV_blank>link\\\\n\" , dest ) ; exit ( 1 ) ; } <S2SV_StartBug> pid_t child = fork ( ) ; <S2SV_EndBug> if ( child < 0 ) errExit ( \"fork\" ) ; if ( child == 0 ) { drop_privs ( 0 ) ; int rv = copy_file ( src , dest , getuid ( ) , getgid ( ) , S_IRUSR | S_IWUSR ) ; <S2SV_StartBug> if ( rv ) <S2SV_EndBug> fprintf ( stderr , \"Warning:<S2SV_blank>cannot<S2SV_blank>transfer<S2SV_blank>.Xauthority<S2SV_blank>in<S2SV_blank>private<S2SV_blank>home<S2SV_blank>directory\\\\n\" ) ; else { <S2SV_StartBug> fs_logger2 ( \"clone\" , dest ) ; <S2SV_EndBug> } _exit ( 0 ) ; } waitpid ( child , NULL , 0 ) ; unlink ( src ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } copy_file_as_user <S2SV_ModEnd> ( src , <S2SV_ModStart> S_IWUSR ) ; <S2SV_ModEnd> fs_logger2 ( \"clone\" <S2SV_ModStart> \"clone\" , dest <S2SV_ModEnd> ) ; unlink\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12633\n\n```\nCWE-362 static long vbg_misc_device_ioctl ( struct file * filp , unsigned int req , unsigned long arg ) { struct vbg_session * session = filp -> private_data ; size_t returned_size , size ; struct vbg_ioctl_hdr hdr ; bool is_vmmdev_req ; int ret = 0 ; void * buf ; if ( copy_from_user ( & hdr , ( void * ) arg , sizeof ( hdr ) ) ) return - EFAULT ; if ( hdr . version != VBG_IOCTL_HDR_VERSION ) return - EINVAL ; if ( hdr . size_in < sizeof ( hdr ) || ( hdr . size_out && hdr . size_out < sizeof ( hdr ) ) ) return - EINVAL ; size = max ( hdr . size_in , hdr . size_out ) ; if ( _IOC_SIZE ( req ) && _IOC_SIZE ( req ) != size ) return - EINVAL ; if ( size > SZ_16M ) return - E2BIG ; is_vmmdev_req = ( req & ~ IOCSIZE_MASK ) == VBG_IOCTL_VMMDEV_REQUEST ( 0 ) || req == VBG_IOCTL_VMMDEV_REQUEST_BIG ; if ( is_vmmdev_req ) buf = vbg_req_alloc ( size , VBG_IOCTL_HDR_TYPE_DEFAULT ) ; else buf = kmalloc ( size , GFP_KERNEL ) ; if ( ! buf ) return - ENOMEM ; <S2SV_StartBug> if ( copy_from_user ( buf , ( void * ) arg , hdr . size_in ) ) { <S2SV_EndBug> ret = - EFAULT ; goto out ; } if ( hdr . size_in < size ) memset ( buf + hdr . size_in , 0 , size - hdr . size_in ) ; ret = vbg_core_ioctl ( session , req , buf ) ; if ( ret ) goto out ; returned_size = ( ( struct vbg_ioctl_hdr * ) buf ) -> size_out ; if ( returned_size > size ) { vbg_debug ( \"%s:<S2SV_blank>too<S2SV_blank>much<S2SV_blank>output<S2SV_blank>data<S2SV_blank>%zu<S2SV_blank>><S2SV_blank>%zu\\\\n\" , __func__ , returned_size , size ) ; returned_size = size ; } if ( copy_to_user ( ( void * ) arg , buf , returned_size ) != 0 ) ret = - EFAULT ; out : if ( is_vmmdev_req ) vbg_req_free ( buf , size ) ; else kfree ( buf ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOMEM ; * ( ( struct vbg_ioctl_hdr * ) buf ) = hdr ; <S2SV_ModStart> copy_from_user ( buf + sizeof ( hdr ) <S2SV_ModStart> * ) arg + sizeof ( hdr ) , hdr . size_in - sizeof ( hdr ) <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12135\n\n```\nCWE-190 <S2SV_StartBug> static int bson_string_is_db_ref ( const unsigned char * string , const int length ) { <S2SV_EndBug> int result = 0 ; if ( length >= 4 ) { if ( string [ 1 ] == 'r' && string [ 2 ] == 'e' && string [ 3 ] == 'f' ) result = 1 ; } else if ( length >= 3 ) { if ( string [ 1 ] == 'i' && string [ 2 ] == 'd' ) result = 1 ; else if ( string [ 1 ] == 'd' && string [ 2 ] == 'b' ) result = 1 ; } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> string , const size_t <S2SV_ModEnd> length ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16643\n\n```\nCWE-20 static Image * ReadDCMImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowDCMException ( exception , message ) { if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; if ( stream_info != ( DCMStreamInfo * ) NULL ) stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; ThrowReaderException ( ( exception ) , ( message ) ) ; } <S2SV_EndBug> char explicit_vr [ MagickPathExtent ] , implicit_vr [ MagickPathExtent ] , magick [ MagickPathExtent ] , photometric [ MagickPathExtent ] ; DCMInfo info ; DCMStreamInfo * stream_info ; Image * image ; int * bluemap , datum , * greenmap , * graymap , * redmap ; MagickBooleanType explicit_file , explicit_retry , use_explicit ; MagickOffsetType offset ; register unsigned char * p ; register ssize_t i ; size_t colors , height , length , number_scenes , quantum , status , width ; ssize_t count , scene ; unsigned char * data ; unsigned short group , element ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image -> depth = 8UL ; image -> endian = LSBEndian ; ( void ) memset ( & info , 0 , sizeof ( info ) ) ; data = ( unsigned char * ) NULL ; graymap = ( int * ) NULL ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; stream_info = ( DCMStreamInfo * ) AcquireMagickMemory ( sizeof ( * stream_info ) ) ; if ( stream_info == ( DCMStreamInfo * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( stream_info , 0 , sizeof ( * stream_info ) ) ; count = ReadBlob ( image , 128 , ( unsigned char * ) magick ) ; if ( count != 128 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , 4 , ( unsigned char * ) magick ) ; if ( ( count != 4 ) || ( LocaleNCompare ( magick , \"DICM\" , 4 ) != 0 ) ) { offset = SeekBlob ( image , 0L , SEEK_SET ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } ( void ) CopyMagickString ( photometric , \"MONOCHROME1<S2SV_blank>\" , MagickPathExtent ) ; info . bits_allocated = 8 ; info . bytes_per_pixel = 1 ; info . depth = 8 ; info . mask = 0xffff ; info . max_value = 255UL ; info . samples_per_pixel = 1 ; info . signed_data = ( ~ 0UL ) ; info . rescale_slope = 1.0 ; data = ( unsigned char * ) NULL ; element = 0 ; explicit_vr [ 2 ] = '\\\\0' ; explicit_file = MagickFalse ; colors = 0 ; redmap = ( int * ) NULL ; greenmap = ( int * ) NULL ; bluemap = ( int * ) NULL ; graymap = ( int * ) NULL ; height = 0 ; number_scenes = 1 ; use_explicit = MagickFalse ; explicit_retry = MagickFalse ; width = 0 ; while ( TellBlob ( image ) < ( MagickOffsetType ) GetBlobSize ( image ) ) { for ( group = 0 ; ( group != 0x7FE0 ) || ( element != 0x0010 ) ; ) { image -> offset = ( ssize_t ) TellBlob ( image ) ; group = ReadBlobLSBShort ( image ) ; element = ReadBlobLSBShort ( image ) ; if ( ( group == 0xfffc ) && ( element == 0xfffc ) ) break ; if ( ( group != 0x0002 ) && ( image -> endian == MSBEndian ) ) { group = ( unsigned short ) ( ( group << 8 ) | ( ( group >> 8 ) & 0xFF ) ) ; element = ( unsigned short ) ( ( element << 8 ) | ( ( element >> 8 ) & 0xFF ) ) ; } quantum = 0 ; for ( i = 0 ; dicom_info [ i ] . group < 0xffff ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) CopyMagickString ( implicit_vr , dicom_info [ i ] . vr , MagickPathExtent ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) explicit_vr ) ; if ( count != 2 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( explicit_file == MagickFalse ) && ( group != 0x0002 ) ) explicit_file = ( isupper ( ( unsigned char ) * explicit_vr ) != MagickFalse ) && ( isupper ( ( unsigned char ) * ( explicit_vr + 1 ) ) != MagickFalse ) ? MagickTrue : MagickFalse ; use_explicit = ( ( group == 0x0002 ) && ( explicit_retry == MagickFalse ) ) || ( explicit_file != MagickFalse ) ? MagickTrue : MagickFalse ; if ( ( use_explicit != MagickFalse ) && ( strncmp ( implicit_vr , \"xs\" , 2 ) == 0 ) ) ( void ) CopyMagickString ( implicit_vr , explicit_vr , MagickPathExtent ) ; if ( ( use_explicit == MagickFalse ) || ( strncmp ( implicit_vr , \"!!\" , 2 ) == 0 ) ) { offset = SeekBlob ( image , ( MagickOffsetType ) - 2 , SEEK_CUR ) ; if ( offset < 0 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; quantum = 4 ; } else { quantum = 2 ; if ( ( strncmp ( explicit_vr , \"OB\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"UN\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( explicit_vr , \"SQ\" , 2 ) == 0 ) ) { ( void ) ReadBlobLSBShort ( image ) ; quantum = 4 ; } } datum = 0 ; if ( quantum == 4 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( quantum == 2 ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } quantum = 0 ; length = 1 ; if ( datum != 0 ) { if ( ( strncmp ( implicit_vr , \"OW\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SS\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"US\" , 2 ) == 0 ) ) quantum = 2 ; else if ( ( strncmp ( implicit_vr , \"FL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"OF\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"SL\" , 2 ) == 0 ) || ( strncmp ( implicit_vr , \"UL\" , 2 ) == 0 ) ) quantum = 4 ; else if ( strncmp ( implicit_vr , \"FD\" , 2 ) == 0 ) quantum = 8 ; else quantum = 1 ; if ( datum != ~ 0 ) length = ( size_t ) datum / quantum ; else { quantum = 0 ; length = 0 ; } } if ( image_info -> verbose != MagickFalse ) { if ( use_explicit == MagickFalse ) explicit_vr [ 0 ] = '\\\\0' ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; ( void ) FormatLocaleFile ( stdout , \"0x%04lX<S2SV_blank>%4ld<S2SV_blank>%s-%s<S2SV_blank>(0x%04lx,0x%04lx)\" , ( unsigned long ) image -> offset , ( long ) length , implicit_vr , explicit_vr , ( unsigned long ) group , ( unsigned long ) element ) ; if ( dicom_info [ i ] . description != ( char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"<S2SV_blank>%s\" , dicom_info [ i ] . description ) ; ( void ) FormatLocaleFile ( stdout , \":<S2SV_blank>\" ) ; } if ( ( group == 0x7FE0 ) && ( element == 0x0010 ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; break ; } data = ( unsigned char * ) NULL ; if ( ( length == 1 ) && ( quantum == 1 ) ) datum = ReadBlobByte ( image ) ; else if ( ( length == 1 ) && ( quantum == 2 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedShort ( image ) ; else datum = ReadBlobSignedShort ( image ) ; } else if ( ( length == 1 ) && ( quantum == 4 ) ) { if ( group == 0x0002 ) datum = ReadBlobLSBSignedLong ( image ) ; else datum = ReadBlobSignedLong ( image ) ; } else if ( ( quantum != 0 ) && ( length != 0 ) ) { if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ~ length >= 1 ) data = ( unsigned char * ) AcquireQuantumMemory ( length + 1 , quantum * sizeof ( * data ) ) ; if ( data == ( unsigned char * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , ( size_t ) quantum * length , data ) ; if ( count != ( ssize_t ) ( quantum * length ) ) { if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"count=%d<S2SV_blank>quantum=%d<S2SV_blank>\" \"length=%d<S2SV_blank>group=%d\\\\n\" , ( int ) count , ( int ) quantum , ( int ) length , ( int ) group ) ; ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } data [ length * quantum ] = '\\\\0' ; } if ( ( ( ( unsigned int ) group << 16 ) | element ) == 0xFFFEE0DD ) { if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; continue ; } switch ( group ) { case 0x0002 : { switch ( element ) { case 0x0010 : { char transfer_syntax [ MagickPathExtent ] ; if ( ( datum == 0 ) && ( explicit_retry == MagickFalse ) ) { explicit_retry = MagickTrue ; ( void ) SeekBlob ( image , ( MagickOffsetType ) 0 , SEEK_SET ) ; group = 0 ; element = 0 ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"Corrupted<S2SV_blank>image<S2SV_blank>-<S2SV_blank>trying<S2SV_blank>explicit<S2SV_blank>format\\\\n\" ) ; break ; } * transfer_syntax = '\\\\0' ; if ( data != ( unsigned char * ) NULL ) ( void ) CopyMagickString ( transfer_syntax , ( char * ) data , MagickPathExtent ) ; if ( image_info -> verbose != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"transfer_syntax=%s\\\\n\" , ( const char * ) transfer_syntax ) ; if ( strncmp ( transfer_syntax , \"1.2.840.10008.1.2\" , 17 ) == 0 ) { int subtype , type ; type = 1 ; subtype = 0 ; if ( strlen ( transfer_syntax ) > 17 ) { count = ( ssize_t ) sscanf ( transfer_syntax + 17 , \".%d.%d\" , & type , & subtype ) ; if ( count < 1 ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } switch ( type ) { case 1 : { image -> endian = LSBEndian ; break ; } case 2 : { image -> endian = MSBEndian ; break ; } case 4 : { if ( ( subtype >= 80 ) && ( subtype <= 81 ) ) image -> compression = JPEGCompression ; else if ( ( subtype >= 90 ) && ( subtype <= 93 ) ) image -> compression = JPEG2000Compression ; else image -> compression = JPEGCompression ; break ; } case 5 : { image -> compression = RLECompression ; break ; } } } break ; } default : break ; } break ; } case 0x0028 : { switch ( element ) { case 0x0002 : { info . samples_per_pixel = ( size_t ) datum ; if ( ( info . samples_per_pixel == 0 ) || ( info . samples_per_pixel > 4 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; break ; } case 0x0004 : { if ( data == ( unsigned char * ) NULL ) break ; for ( i = 0 ; i < ( ssize_t ) MagickMin ( length , MagickPathExtent - 1 ) ; i ++ ) photometric [ i ] = ( char ) data [ i ] ; photometric [ i ] = '\\\\0' ; info . polarity = LocaleCompare ( photometric , \"MONOCHROME1<S2SV_blank>\" ) == 0 ? MagickTrue : MagickFalse ; break ; } case 0x0006 : { if ( datum == 1 ) image -> interlace = PlaneInterlace ; break ; } case 0x0008 : { if ( data == ( unsigned char * ) NULL ) break ; number_scenes = StringToUnsignedLong ( ( char * ) data ) ; break ; } case 0x0010 : { height = ( size_t ) datum ; break ; } case 0x0011 : { width = ( size_t ) datum ; break ; } case 0x0100 : { info . bits_allocated = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( datum > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . bits_allocated ; if ( ( info . depth == 0 ) || ( info . depth > 32 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . bits_allocated ) - 1 ; image -> depth = info . depth ; break ; } case 0x0101 : { info . significant_bits = ( size_t ) datum ; info . bytes_per_pixel = 1 ; if ( info . significant_bits > 8 ) info . bytes_per_pixel = 2 ; info . depth = info . significant_bits ; if ( ( info . depth == 0 ) || ( info . depth > 16 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; info . max_value = ( 1UL << info . significant_bits ) - 1 ; info . mask = ( size_t ) GetQuantumRange ( info . significant_bits ) ; image -> depth = info . depth ; break ; } case 0x0102 : { break ; } case 0x0103 : { info . signed_data = ( size_t ) datum ; break ; } case 0x1050 : { if ( data != ( unsigned char * ) NULL ) info . window_center = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1051 : { if ( data != ( unsigned char * ) NULL ) info . window_width = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1052 : { if ( data != ( unsigned char * ) NULL ) info . rescale_intercept = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1053 : { if ( data != ( unsigned char * ) NULL ) info . rescale_slope = StringToDouble ( ( char * ) data , ( char * * ) NULL ) ; break ; } case 0x1200 : case 0x3006 : { if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / info . bytes_per_pixel ) ; datum = ( int ) colors ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; graymap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * graymap ) ) ; if ( graymap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( graymap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * graymap ) ) ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) if ( info . bytes_per_pixel == 1 ) graymap [ i ] = ( int ) data [ i ] ; else graymap [ i ] = ( int ) ( ( short * ) data ) [ i ] ; break ; } case 0x1201 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; redmap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * redmap ) ) ; if ( redmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( redmap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * redmap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; redmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1202 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; greenmap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * greenmap ) ) ; if ( greenmap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( greenmap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * greenmap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; greenmap [ i ] = ( int ) index ; p += 2 ; } break ; } case 0x1203 : { unsigned short index ; if ( data == ( unsigned char * ) NULL ) break ; colors = ( size_t ) ( length / 2 ) ; datum = ( int ) colors ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; bluemap = ( int * ) AcquireQuantumMemory ( MagickMax ( colors , 65536 ) , sizeof ( * bluemap ) ) ; if ( bluemap == ( int * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( bluemap , 0 , MagickMax ( colors , 65536 ) * sizeof ( * bluemap ) ) ; p = data ; for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { if ( image -> endian == MSBEndian ) index = ( unsigned short ) ( ( * p << 8 ) | * ( p + 1 ) ) ; else index = ( unsigned short ) ( * p | ( * ( p + 1 ) << 8 ) ) ; bluemap [ i ] = ( int ) index ; p += 2 ; } break ; } default : break ; } break ; } case 0x2050 : { switch ( element ) { case 0x0020 : { if ( ( data != ( unsigned char * ) NULL ) && ( strncmp ( ( char * ) data , \"INVERSE\" , 7 ) == 0 ) ) info . polarity = MagickTrue ; break ; } default : break ; } break ; } default : break ; } if ( data != ( unsigned char * ) NULL ) { char * attribute ; for ( i = 0 ; dicom_info [ i ] . description != ( char * ) NULL ; i ++ ) if ( ( group == dicom_info [ i ] . group ) && ( element == dicom_info [ i ] . element ) ) break ; if ( dicom_info [ i ] . description != ( char * ) NULL ) { attribute = AcquireString ( \"dcm:\" ) ; ( void ) ConcatenateString ( & attribute , dicom_info [ i ] . description ) ; for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i == ( ssize_t ) length ) || ( length > 4 ) ) { ( void ) SubstituteString ( & attribute , \"<S2SV_blank>\" , \"\" ) ; ( void ) SetImageProperty ( image , attribute , ( char * ) data , exception ) ; } attribute = DestroyString ( attribute ) ; } } if ( image_info -> verbose != MagickFalse ) { if ( data == ( unsigned char * ) NULL ) ( void ) FormatLocaleFile ( stdout , \"%d\\\\n\" , datum ) ; else { for ( i = 0 ; i < ( ssize_t ) MagickMax ( length , 4 ) ; i ++ ) if ( isprint ( ( int ) data [ i ] ) == MagickFalse ) break ; if ( ( i != ( ssize_t ) length ) && ( length <= 4 ) ) { ssize_t j ; datum = 0 ; for ( j = ( ssize_t ) length - 1 ; j >= 0 ; j -- ) datum = ( 256 * datum + data [ j ] ) ; ( void ) FormatLocaleFile ( stdout , \"%d\" , datum ) ; } else for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) if ( isprint ( ( int ) data [ i ] ) != MagickFalse ) ( void ) FormatLocaleFile ( stdout , \"%c\" , data [ i ] ) ; else ( void ) FormatLocaleFile ( stdout , \"%c\" , '.' ) ; ( void ) FormatLocaleFile ( stdout , \"\\\\n\" ) ; } } if ( data != ( unsigned char * ) NULL ) data = ( unsigned char * ) RelinquishMagickMemory ( data ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } } if ( ( group == 0xfffc ) && ( element == 0xfffc ) ) { Image * last ; last = RemoveLastImageFromList ( & image ) ; if ( last != ( Image * ) NULL ) last = DestroyImage ( last ) ; break ; } if ( ( width == 0 ) || ( height == 0 ) ) ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; if ( info . signed_data == 0xffff ) info . signed_data = ( size_t ) ( info . significant_bits == 16 ? 1 : 0 ) ; if ( ( image -> compression == JPEGCompression ) || ( image -> compression == JPEG2000Compression ) ) { Image * images ; ImageInfo * read_info ; int c ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; ( void ) ( ( ( ssize_t ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; offset = TellBlob ( image ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; images = NewImageList ( ) ; for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { char filename [ MagickPathExtent ] ; const char * property ; FILE * file ; Image * jpeg_image ; int unique_file ; unsigned int tag ; tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( tag == 0xFFFEE0DD ) break ; if ( tag != 0xFFFEE000 ) { read_info = DestroyImageInfo ( read_info ) ; ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( file == ( FILE * ) NULL ) { ( void ) RelinquishUniqueFileResource ( filename ) ; ThrowFileException ( exception , FileOpenError , \"UnableToCreateTemporaryFile\" , filename ) ; break ; } for ( c = EOF ; length != 0 ; length -- ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } <S2SV_StartBug> ( void ) fputc ( c , file ) ; <S2SV_EndBug> } ( void ) fclose ( file ) ; if ( c == EOF ) break ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"jpeg:%s\" , filename ) ; if ( image -> compression == JPEG2000Compression ) ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"j2k:%s\" , filename ) ; jpeg_image = ReadImage ( read_info , exception ) ; if ( jpeg_image != ( Image * ) NULL ) { ResetImagePropertyIterator ( image ) ; property = GetNextImageProperty ( image ) ; while ( property != ( const char * ) NULL ) { ( void ) SetImageProperty ( jpeg_image , property , GetImageProperty ( image , property , exception ) , exception ) ; property = GetNextImageProperty ( image ) ; } AppendImageToList ( & images , jpeg_image ) ; } ( void ) RelinquishUniqueFileResource ( filename ) ; } read_info = DestroyImageInfo ( read_info ) ; if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; image = DestroyImageList ( image ) ; return ( GetFirstImageInList ( images ) ) ; } if ( info . depth != ( 1UL * MAGICKCORE_QUANTUM_DEPTH ) ) { QuantumAny range ; length = ( size_t ) ( GetQuantumRange ( info . depth ) + 1 ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; info . scale = ( Quantum * ) AcquireQuantumMemory ( MagickMax ( length , 256 ) , sizeof ( * info . scale ) ) ; if ( info . scale == ( Quantum * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; ( void ) memset ( info . scale , 0 , MagickMax ( length , 256 ) * sizeof ( * info . scale ) ) ; range = GetQuantumRange ( info . depth ) ; for ( i = 0 ; i <= ( ssize_t ) GetQuantumRange ( info . depth ) ; i ++ ) info . scale [ i ] = ScaleAnyToQuantum ( ( size_t ) i , range ) ; } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) { int c ; c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; } tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; ( void ) tag ; length = ( size_t ) ReadBlobLSBLong ( image ) ; if ( length > ( size_t ) GetBlobSize ( image ) ) ThrowDCMException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; stream_info -> offset_count = length >> 2 ; if ( stream_info -> offset_count != 0 ) { stream_info -> offsets = ( ssize_t * ) AcquireQuantumMemory ( stream_info -> offset_count , sizeof ( * stream_info -> offsets ) ) ; if ( stream_info -> offsets == ( ssize_t * ) NULL ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) { stream_info -> offsets [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) break ; } offset = TellBlob ( image ) + 8 ; for ( i = 0 ; i < ( ssize_t ) stream_info -> offset_count ; i ++ ) stream_info -> offsets [ i ] += offset ; } } for ( scene = 0 ; scene < ( ssize_t ) number_scenes ; scene ++ ) { if ( image_info -> ping != MagickFalse ) break ; image -> columns = ( size_t ) width ; image -> rows = ( size_t ) height ; image -> depth = info . depth ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) break ; image -> colorspace = RGBColorspace ; ( void ) SetImageBackgroundColor ( image , exception ) ; if ( ( image -> colormap == ( PixelInfo * ) NULL ) && ( info . samples_per_pixel == 1 ) ) { int index ; size_t one ; one = 1 ; if ( colors == 0 ) colors = one << info . depth ; if ( AcquireImageColormap ( image , colors , exception ) == MagickFalse ) ThrowDCMException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( redmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = redmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; } if ( greenmap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = greenmap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . green = ( MagickRealType ) index ; } if ( bluemap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = bluemap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } if ( graymap != ( int * ) NULL ) for ( i = 0 ; i < ( ssize_t ) colors ; i ++ ) { index = graymap [ i ] ; if ( ( info . scale != ( Quantum * ) NULL ) && ( index >= 0 ) && ( index <= ( int ) info . max_value ) ) index = ( int ) info . scale [ index ] ; image -> colormap [ i ] . red = ( MagickRealType ) index ; image -> colormap [ i ] . green = ( MagickRealType ) index ; image -> colormap [ i ] . blue = ( MagickRealType ) index ; } } if ( image -> compression == RLECompression ) { unsigned int tag ; for ( i = 0 ; i < ( ssize_t ) stream_info -> remaining ; i ++ ) { int c ; c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; } tag = ( ( unsigned int ) ReadBlobLSBShort ( image ) << 16 ) | ReadBlobLSBShort ( image ) ; stream_info -> remaining = ( size_t ) ReadBlobLSBLong ( image ) ; if ( ( tag != 0xFFFEE000 ) || ( stream_info -> remaining <= 64 ) || ( EOFBlob ( image ) != MagickFalse ) ) { if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; ThrowDCMException ( CorruptImageError , \"ImproperImageHeader\" ) ; } stream_info -> count = 0 ; stream_info -> segment_count = ReadBlobLSBLong ( image ) ; for ( i = 0 ; i < 15 ; i ++ ) stream_info -> segments [ i ] = ( ssize_t ) ReadBlobLSBSignedLong ( image ) ; stream_info -> remaining -= 64 ; if ( stream_info -> segment_count > 1 ) { info . bytes_per_pixel = 1 ; info . depth = 8 ; if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , ( MagickOffsetType ) stream_info -> offsets [ 0 ] + stream_info -> segments [ 0 ] , SEEK_SET ) ; } } if ( ( info . samples_per_pixel > 1 ) && ( image -> interlace == PlaneInterlace ) ) { register ssize_t x ; register Quantum * q ; ssize_t y ; for ( i = 0 ; i < ( ssize_t ) info . samples_per_pixel ; i ++ ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = GetAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { switch ( ( int ) i ) { case 0 : { SetPixelRed ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 1 : { SetPixelGreen ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 2 : { SetPixelBlue ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } case 3 : { SetPixelAlpha ( image , ScaleCharToQuantum ( ( unsigned char ) ReadDCMByte ( stream_info , image ) ) , q ) ; break ; } default : break ; } q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } } else { const char * option ; option = GetImageOption ( image_info , \"dcm:display-range\" ) ; if ( option != ( const char * ) NULL ) { if ( LocaleCompare ( option , \"reset\" ) == 0 ) info . window_width = 0 ; } option = GetImageOption ( image_info , \"dcm:window\" ) ; if ( option != ( char * ) NULL ) { GeometryInfo geometry_info ; MagickStatusType flags ; flags = ParseGeometry ( option , & geometry_info ) ; if ( flags & RhoValue ) info . window_center = geometry_info . rho ; if ( flags & SigmaValue ) info . window_width = geometry_info . sigma ; info . rescale = MagickTrue ; } option = GetImageOption ( image_info , \"dcm:rescale\" ) ; if ( option != ( char * ) NULL ) info . rescale = IsStringTrue ( option ) ; if ( ( info . window_center != 0 ) && ( info . window_width == 0 ) ) info . window_width = info . window_center ; status = ReadDCMPixels ( image , & info , stream_info , MagickTrue , exception ) ; if ( ( status != MagickFalse ) && ( stream_info -> segment_count > 1 ) ) { if ( stream_info -> offset_count > 0 ) ( void ) SeekBlob ( image , ( MagickOffsetType ) stream_info -> offsets [ 0 ] + stream_info -> segments [ 1 ] , SEEK_SET ) ; ( void ) ReadDCMPixels ( image , & info , stream_info , MagickFalse , exception ) ; } } if ( SetImageGray ( image , exception ) != MagickFalse ) ( void ) SetImageColorspace ( image , GRAYColorspace , exception ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( scene < ( ssize_t ) ( number_scenes - 1 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; break ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( TellBlob ( image ) < ( MagickOffsetType ) GetBlobSize ( image ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { status = MagickFalse ; break ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } if ( stream_info -> offsets != ( ssize_t * ) NULL ) stream_info -> offsets = ( ssize_t * ) RelinquishMagickMemory ( stream_info -> offsets ) ; stream_info = ( DCMStreamInfo * ) RelinquishMagickMemory ( stream_info ) ; if ( info . scale != ( Quantum * ) NULL ) info . scale = ( Quantum * ) RelinquishMagickMemory ( info . scale ) ; if ( graymap != ( int * ) NULL ) graymap = ( int * ) RelinquishMagickMemory ( graymap ) ; if ( bluemap != ( int * ) NULL ) bluemap = ( int * ) RelinquishMagickMemory ( bluemap ) ; if ( greenmap != ( int * ) NULL ) greenmap = ( int * ) RelinquishMagickMemory ( greenmap ) ; if ( redmap != ( int * ) NULL ) redmap = ( int * ) RelinquishMagickMemory ( redmap ) ; ( void ) CloseBlob ( image ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , message ) \\\\\\n{ <S2SV_ModEnd> if ( info <S2SV_ModStart> ) ) ; \\\\\\n} <S2SV_ModEnd> char explicit_vr [ <S2SV_ModStart> break ; } if ( <S2SV_ModEnd> fputc ( c <S2SV_ModStart> , file ) != c ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int detect_flash ( const struct twopass_rc * twopass , int offset ) { <S2SV_EndBug> <S2SV_StartBug> FIRSTPASS_STATS next_frame ; <S2SV_EndBug> int flash_detected = 0 ; <S2SV_StartBug> if ( read_frame_stats ( twopass , & next_frame , offset ) != EOF ) { <S2SV_EndBug> <S2SV_StartBug> if ( next_frame . pcnt_second_ref > next_frame . pcnt_inter && <S2SV_EndBug> <S2SV_StartBug> next_frame . pcnt_second_ref >= 0.5 ) <S2SV_EndBug> flash_detected = 1 ; } return flash_detected ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> detect_flash ( const TWO_PASS <S2SV_ModEnd> * twopass , <S2SV_ModStart> offset ) { const FIRSTPASS_STATS * const next_frame = <S2SV_ModEnd> read_frame_stats ( twopass <S2SV_ModStart> ( twopass , offset ) ; return next_frame != NULL && next_frame -> <S2SV_ModEnd> pcnt_second_ref > next_frame <S2SV_ModStart> pcnt_second_ref > next_frame -> <S2SV_ModEnd> pcnt_inter && next_frame <S2SV_ModStart> pcnt_inter && next_frame -> <S2SV_ModEnd> pcnt_second_ref >= 0.5 <S2SV_ModStart> pcnt_second_ref >= 0.5 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13405\n\n```\nCWE-269 void inode_init_owner ( struct inode * inode , const struct inode * dir , umode_t mode ) { inode -> i_uid = current_fsuid ( ) ; if ( dir && dir -> i_mode & S_ISGID ) { inode -> i_gid = dir -> i_gid ; if ( S_ISDIR ( mode ) ) mode |= S_ISGID ; <S2SV_StartBug> } else <S2SV_EndBug> inode -> i_gid = current_fsgid ( ) ; inode -> i_mode = mode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> |= S_ISGID ; else if ( ( mode & ( S_ISGID | S_IXGRP ) ) == ( S_ISGID | S_IXGRP ) && ! in_group_p ( inode -> i_gid ) && ! capable_wrt_inode_uidgid ( dir , CAP_FSETID ) ) mode &= ~ S_ISGID ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18922\n\n```\nCWE-787 static rfbBool webSocketsHandshake ( rfbClientPtr cl , char * scheme ) { char * buf , * response , * line ; int n , linestart = 0 , len = 0 , llen , base64 = TRUE ; char prefix [ 5 ] , trailer [ 17 ] ; char * path = NULL , * host = NULL , * origin = NULL , * protocol = NULL ; char * key1 = NULL , * key2 = NULL , * key3 = NULL ; char * sec_ws_origin = NULL ; char * sec_ws_key = NULL ; char sec_ws_version = 0 ; ws_ctx_t * wsctx = NULL ; buf = ( char * ) malloc ( WEBSOCKETS_MAX_HANDSHAKE_LEN ) ; if ( ! buf ) { rfbLogPerror ( \"webSocketsHandshake:<S2SV_blank>malloc\" ) ; return FALSE ; } response = ( char * ) malloc ( WEBSOCKETS_MAX_HANDSHAKE_LEN ) ; if ( ! response ) { free ( buf ) ; rfbLogPerror ( \"webSocketsHandshake:<S2SV_blank>malloc\" ) ; return FALSE ; } while ( len < WEBSOCKETS_MAX_HANDSHAKE_LEN - 1 ) { if ( ( n = rfbReadExactTimeout ( cl , buf + len , 1 , WEBSOCKETS_CLIENT_SEND_WAIT_MS ) ) <= 0 ) { if ( ( n < 0 ) && ( errno == ETIMEDOUT ) ) { break ; } if ( n == 0 ) rfbLog ( \"webSocketsHandshake:<S2SV_blank>client<S2SV_blank>gone\\\\n\" ) ; else rfbLogPerror ( \"webSocketsHandshake:<S2SV_blank>read\" ) ; free ( response ) ; free ( buf ) ; return FALSE ; } len += 1 ; llen = len - linestart ; if ( ( ( llen >= 2 ) ) && ( buf [ len - 1 ] == '\\\\n' ) ) { line = buf + linestart ; if ( ( llen == 2 ) && ( strncmp ( \"\\\\r\\\\n\" , line , 2 ) == 0 ) ) { if ( key1 && key2 ) { if ( ( n = rfbReadExact ( cl , buf + len , 8 ) ) <= 0 ) { if ( ( n < 0 ) && ( errno == ETIMEDOUT ) ) { break ; } if ( n == 0 ) rfbLog ( \"webSocketsHandshake:<S2SV_blank>client<S2SV_blank>gone\\\\n\" ) ; else rfbLogPerror ( \"webSocketsHandshake:<S2SV_blank>read\" ) ; free ( response ) ; free ( buf ) ; return FALSE ; } rfbLog ( \"Got<S2SV_blank>key3\\\\n\" ) ; key3 = buf + len ; len += 8 ; } else { buf [ len ] = '\\\\0' ; } break ; } else if ( ( llen >= 16 ) && ( ( strncmp ( \"GET<S2SV_blank>\" , line , min ( llen , 4 ) ) ) == 0 ) ) { path = line + 4 ; buf [ len - 11 ] = '\\\\0' ; cl -> wspath = strdup ( path ) ; } else if ( ( strncasecmp ( \"host:<S2SV_blank>\" , line , min ( llen , 6 ) ) ) == 0 ) { host = line + 6 ; buf [ len - 2 ] = '\\\\0' ; } else if ( ( strncasecmp ( \"origin:<S2SV_blank>\" , line , min ( llen , 8 ) ) ) == 0 ) { origin = line + 8 ; buf [ len - 2 ] = '\\\\0' ; } else if ( ( strncasecmp ( \"sec-websocket-key1:<S2SV_blank>\" , line , min ( llen , 20 ) ) ) == 0 ) { key1 = line + 20 ; buf [ len - 2 ] = '\\\\0' ; } else if ( ( strncasecmp ( \"sec-websocket-key2:<S2SV_blank>\" , line , min ( llen , 20 ) ) ) == 0 ) { key2 = line + 20 ; buf [ len - 2 ] = '\\\\0' ; } else if ( ( strncasecmp ( \"sec-websocket-protocol:<S2SV_blank>\" , line , min ( llen , 24 ) ) ) == 0 ) { protocol = line + 24 ; buf [ len - 2 ] = '\\\\0' ; rfbLog ( \"Got<S2SV_blank>protocol:<S2SV_blank>%s\\\\n\" , protocol ) ; } else if ( ( strncasecmp ( \"sec-websocket-origin:<S2SV_blank>\" , line , min ( llen , 22 ) ) ) == 0 ) { sec_ws_origin = line + 22 ; buf [ len - 2 ] = '\\\\0' ; } else if ( ( strncasecmp ( \"sec-websocket-key:<S2SV_blank>\" , line , min ( llen , 19 ) ) ) == 0 ) { sec_ws_key = line + 19 ; buf [ len - 2 ] = '\\\\0' ; } else if ( ( strncasecmp ( \"sec-websocket-version:<S2SV_blank>\" , line , min ( llen , 23 ) ) ) == 0 ) { sec_ws_version = strtol ( line + 23 , NULL , 10 ) ; buf [ len - 2 ] = '\\\\0' ; } linestart = len ; } } if ( ! ( path && host && ( origin || sec_ws_origin ) ) ) { rfbErr ( \"webSocketsHandshake:<S2SV_blank>incomplete<S2SV_blank>client<S2SV_blank>handshake\\\\n\" ) ; free ( response ) ; free ( buf ) ; return FALSE ; } if ( ( protocol ) && ( strstr ( protocol , \"binary\" ) ) ) { if ( ! sec_ws_version ) { rfbErr ( \"webSocketsHandshake:<S2SV_blank>\\'binary\\'<S2SV_blank>protocol<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>with<S2SV_blank>Hixie\\\\n\" ) ; free ( response ) ; free ( buf ) ; return FALSE ; } rfbLog ( \"<S2SV_blank><S2SV_blank>-<S2SV_blank>webSocketsHandshake:<S2SV_blank>using<S2SV_blank>binary/raw<S2SV_blank>encoding\\\\n\" ) ; base64 = FALSE ; protocol = \"binary\" ; } else { rfbLog ( \"<S2SV_blank><S2SV_blank>-<S2SV_blank>webSocketsHandshake:<S2SV_blank>using<S2SV_blank>base64<S2SV_blank>encoding\\\\n\" ) ; base64 = TRUE ; if ( ( protocol ) && ( strstr ( protocol , \"base64\" ) ) ) { protocol = \"base64\" ; } else { protocol = \"\" ; } } if ( sec_ws_version ) { char accept [ B64LEN ( SHA1_HASH_SIZE ) + 1 ] ; rfbLog ( \"<S2SV_blank><S2SV_blank>-<S2SV_blank>WebSockets<S2SV_blank>client<S2SV_blank>version<S2SV_blank>hybi-%02d\\\\n\" , sec_ws_version ) ; webSocketsGenSha1Key ( accept , sizeof ( accept ) , sec_ws_key ) ; if ( strlen ( protocol ) > 0 ) len = snprintf ( response , WEBSOCKETS_MAX_HANDSHAKE_LEN , SERVER_HANDSHAKE_HYBI , accept , protocol ) ; else len = snprintf ( response , WEBSOCKETS_MAX_HANDSHAKE_LEN , SERVER_HANDSHAKE_HYBI_NO_PROTOCOL , accept ) ; } else { if ( ! ( key1 && key2 && key3 ) ) { rfbLog ( \"<S2SV_blank><S2SV_blank>-<S2SV_blank>WebSockets<S2SV_blank>client<S2SV_blank>version<S2SV_blank>hixie-75\\\\n\" ) ; prefix [ 0 ] = '\\\\0' ; trailer [ 0 ] = '\\\\0' ; } else { rfbLog ( \"<S2SV_blank><S2SV_blank>-<S2SV_blank>WebSockets<S2SV_blank>client<S2SV_blank>version<S2SV_blank>hixie-76\\\\n\" ) ; snprintf ( prefix , 5 , \"Sec-\" ) ; webSocketsGenMd5 ( trailer , key1 , key2 , key3 ) ; } len = snprintf ( response , WEBSOCKETS_MAX_HANDSHAKE_LEN , SERVER_HANDSHAKE_HIXIE , prefix , origin , prefix , scheme , host , path , prefix , protocol , trailer ) ; } if ( rfbWriteExact ( cl , response , len ) < 0 ) { rfbErr ( \"webSocketsHandshake:<S2SV_blank>failed<S2SV_blank>sending<S2SV_blank>WebSockets<S2SV_blank>response\\\\n\" ) ; free ( response ) ; free ( buf ) ; return FALSE ; } free ( response ) ; free ( buf ) ; wsctx = calloc ( 1 , sizeof ( ws_ctx_t ) ) ; if ( sec_ws_version ) { wsctx -> version = WEBSOCKETS_VERSION_HYBI ; wsctx -> encode = webSocketsEncodeHybi ; wsctx -> decode = webSocketsDecodeHybi ; } else { wsctx -> version = WEBSOCKETS_VERSION_HIXIE ; wsctx -> encode = webSocketsEncodeHixie ; wsctx -> decode = webSocketsDecodeHixie ; } wsctx -> base64 = base64 ; <S2SV_StartBug> cl -> wsctx = ( wsCtx * ) wsctx ; <S2SV_EndBug> return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = base64 ; hybiDecodeCleanup ( wsctx ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15127\n\n```\nCWE-000 int hugetlb_mcopy_atomic_pte ( struct mm_struct * dst_mm , pte_t * dst_pte , struct vm_area_struct * dst_vma , unsigned long dst_addr , unsigned long src_addr , struct page * * pagep ) { int vm_shared = dst_vma -> vm_flags & VM_SHARED ; struct hstate * h = hstate_vma ( dst_vma ) ; pte_t _dst_pte ; spinlock_t * ptl ; int ret ; struct page * page ; if ( ! * pagep ) { ret = - ENOMEM ; page = alloc_huge_page ( dst_vma , dst_addr , 0 ) ; if ( IS_ERR ( page ) ) goto out ; ret = copy_huge_page_from_user ( page , ( const void __user * ) src_addr , pages_per_huge_page ( h ) , false ) ; if ( unlikely ( ret ) ) { ret = - EFAULT ; * pagep = page ; goto out ; } } else { page = * pagep ; * pagep = NULL ; } __SetPageUptodate ( page ) ; set_page_huge_active ( page ) ; if ( vm_shared ) { struct address_space * mapping = dst_vma -> vm_file -> f_mapping ; pgoff_t idx = vma_hugecache_offset ( h , dst_vma , dst_addr ) ; ret = huge_add_to_page_cache ( page , mapping , idx ) ; if ( ret ) goto out_release_nounlock ; } ptl = huge_pte_lockptr ( h , dst_mm , dst_pte ) ; spin_lock ( ptl ) ; ret = - EEXIST ; if ( ! huge_pte_none ( huge_ptep_get ( dst_pte ) ) ) goto out_release_unlock ; if ( vm_shared ) { page_dup_rmap ( page , true ) ; } else { ClearPagePrivate ( page ) ; hugepage_add_new_anon_rmap ( page , dst_vma , dst_addr ) ; } _dst_pte = make_huge_pte ( dst_vma , page , dst_vma -> vm_flags & VM_WRITE ) ; if ( dst_vma -> vm_flags & VM_WRITE ) _dst_pte = huge_pte_mkdirty ( _dst_pte ) ; _dst_pte = pte_mkyoung ( _dst_pte ) ; set_huge_pte_at ( dst_mm , dst_addr , dst_pte , _dst_pte ) ; ( void ) huge_ptep_set_access_flags ( dst_vma , dst_addr , dst_pte , _dst_pte , dst_vma -> vm_flags & VM_WRITE ) ; hugetlb_count_add ( pages_per_huge_page ( h ) , dst_mm ) ; update_mmu_cache ( dst_vma , dst_addr , dst_pte ) ; spin_unlock ( ptl ) ; if ( vm_shared ) unlock_page ( page ) ; ret = 0 ; out : return ret ; out_release_unlock : spin_unlock ( ptl ) ; <S2SV_StartBug> out_release_nounlock : <S2SV_EndBug> if ( vm_shared ) unlock_page ( page ) ; put_page ( page ) ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ptl ) ; if ( vm_shared ) unlock_page ( page ) ; out_release_nounlock : <S2SV_ModEnd> put_page ( page\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16820\n\n```\nCWE-415 static int csnmp_read_table ( host_definition_t * host , data_definition_t * data ) { struct snmp_pdu * req ; struct snmp_pdu * res = NULL ; struct variable_list * vb ; const data_set_t * ds ; size_t oid_list_len = data -> values_len + 1 ; oid_t oid_list [ oid_list_len ] ; _Bool oid_list_todo [ oid_list_len ] ; int status ; size_t i ; csnmp_list_instances_t * instance_list_head ; csnmp_list_instances_t * instance_list_tail ; csnmp_table_values_t * * value_list_head ; csnmp_table_values_t * * value_list_tail ; DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>csnmp_read_table<S2SV_blank>(host<S2SV_blank>=<S2SV_blank>%s,<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%s)\" , host -> name , data -> name ) ; if ( host -> sess_handle == NULL ) { DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>csnmp_read_table:<S2SV_blank>host->sess_handle<S2SV_blank>==<S2SV_blank>NULL\" ) ; return ( - 1 ) ; } ds = plugin_get_ds ( data -> type ) ; if ( ! ds ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>DataSet<S2SV_blank>`%s\\'<S2SV_blank>not<S2SV_blank>defined.\" , data -> type ) ; return ( - 1 ) ; } if ( ds -> ds_num != data -> values_len ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>DataSet<S2SV_blank>`%s\\'<S2SV_blank>requires<S2SV_blank>%zu<S2SV_blank>values,<S2SV_blank>but<S2SV_blank>config<S2SV_blank>talks<S2SV_blank>\" \"about<S2SV_blank>%zu\" , data -> type , ds -> ds_num , data -> values_len ) ; return ( - 1 ) ; } assert ( data -> values_len > 0 ) ; memcpy ( oid_list , data -> values , data -> values_len * sizeof ( oid_t ) ) ; if ( data -> instance . oid . oid_len > 0 ) memcpy ( oid_list + data -> values_len , & data -> instance . oid , sizeof ( oid_t ) ) ; else oid_list_len -- ; for ( i = 0 ; i < oid_list_len ; i ++ ) oid_list_todo [ i ] = 1 ; value_list_head = calloc ( data -> values_len , sizeof ( * value_list_head ) ) ; value_list_tail = calloc ( data -> values_len , sizeof ( * value_list_tail ) ) ; if ( ( value_list_head == NULL ) || ( value_list_tail == NULL ) ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>csnmp_read_table:<S2SV_blank>calloc<S2SV_blank>failed.\" ) ; sfree ( value_list_head ) ; sfree ( value_list_tail ) ; return ( - 1 ) ; } instance_list_head = NULL ; instance_list_tail = NULL ; status = 0 ; while ( status == 0 ) { int oid_list_todo_num ; req = snmp_pdu_create ( SNMP_MSG_GETNEXT ) ; if ( req == NULL ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>snmp_pdu_create<S2SV_blank>failed.\" ) ; status = - 1 ; break ; } oid_list_todo_num = 0 ; for ( i = 0 ; i < oid_list_len ; i ++ ) { if ( ! oid_list_todo [ i ] ) continue ; oid_list_todo_num ++ ; snmp_add_null_var ( req , oid_list [ i ] . oid , oid_list [ i ] . oid_len ) ; } if ( oid_list_todo_num == 0 ) { <S2SV_StartBug> DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>all<S2SV_blank>variables<S2SV_blank>have<S2SV_blank>left<S2SV_blank>their<S2SV_blank>subtree\" ) ; <S2SV_EndBug> status = 0 ; break ; } res = NULL ; status = snmp_sess_synch_response ( host -> sess_handle , req , & res ) ; if ( ( status != STAT_SUCCESS ) || ( res == NULL ) ) { char * errstr = NULL ; snmp_sess_error ( host -> sess_handle , NULL , NULL , & errstr ) ; c_complain ( LOG_ERR , & host -> complaint , \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>%s:<S2SV_blank>snmp_sess_synch_response<S2SV_blank>failed:<S2SV_blank>%s\" , host -> name , ( errstr == NULL ) ? \"Unknown<S2SV_blank>problem\" : errstr ) ; if ( res != NULL ) snmp_free_pdu ( res ) ; res = NULL ; <S2SV_StartBug> req = NULL ; <S2SV_EndBug> sfree ( errstr ) ; csnmp_host_close_session ( host ) ; status = - 1 ; break ; } status = 0 ; assert ( res != NULL ) ; c_release ( LOG_INFO , & host -> complaint , \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>%s:<S2SV_blank>snmp_sess_synch_response<S2SV_blank>successful.\" , host -> name ) ; vb = res -> variables ; if ( vb == NULL ) { status = - 1 ; break ; } for ( vb = res -> variables , i = 0 ; ( vb != NULL ) ; vb = vb -> next_variable , i ++ ) { while ( ( i < oid_list_len ) && ! oid_list_todo [ i ] ) i ++ ; if ( ( data -> instance . oid . oid_len > 0 ) && ( i == data -> values_len ) ) { if ( ( vb -> type == SNMP_ENDOFMIBVIEW ) || ( snmp_oid_ncompare ( data -> instance . oid . oid , data -> instance . oid . oid_len , vb -> name , vb -> name_length , data -> instance . oid . oid_len ) != 0 ) ) { DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>Instance<S2SV_blank>left<S2SV_blank>its<S2SV_blank>subtree.\" , host -> name , data -> name ) ; oid_list_todo [ i ] = 0 ; continue ; } if ( csnmp_instance_list_add ( & instance_list_head , & instance_list_tail , res , host , data ) != 0 ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>%s:<S2SV_blank>csnmp_instance_list_add<S2SV_blank>failed.\" , host -> name ) ; status = - 1 ; break ; } } else { csnmp_table_values_t * vt ; oid_t vb_name ; oid_t suffix ; int ret ; csnmp_oid_init ( & vb_name , vb -> name , vb -> name_length ) ; ret = csnmp_oid_suffix ( & suffix , & vb_name , data -> values + i ) ; if ( ret != 0 ) { DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>i<S2SV_blank>=<S2SV_blank>%zu;<S2SV_blank>\" \"Value<S2SV_blank>probably<S2SV_blank>left<S2SV_blank>its<S2SV_blank>subtree.\" , host -> name , data -> name , i ) ; oid_list_todo [ i ] = 0 ; continue ; } if ( ( value_list_tail [ i ] != NULL ) && ( csnmp_oid_compare ( & suffix , & value_list_tail [ i ] -> suffix ) <= 0 ) ) { DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>host<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>data<S2SV_blank>=<S2SV_blank>%s;<S2SV_blank>i<S2SV_blank>=<S2SV_blank>%zu;<S2SV_blank>\" \"Suffix<S2SV_blank>is<S2SV_blank>not<S2SV_blank>increasing.\" , host -> name , data -> name , i ) ; oid_list_todo [ i ] = 0 ; continue ; } vt = calloc ( 1 , sizeof ( * vt ) ) ; if ( vt == NULL ) { ERROR ( \"snmp<S2SV_blank>plugin:<S2SV_blank>calloc<S2SV_blank>failed.\" ) ; status = - 1 ; break ; } vt -> value = csnmp_value_list_to_value ( vb , ds -> ds [ i ] . type , data -> scale , data -> shift , host -> name , data -> name ) ; memcpy ( & vt -> suffix , & suffix , sizeof ( vt -> suffix ) ) ; vt -> next = NULL ; if ( value_list_tail [ i ] == NULL ) value_list_head [ i ] = vt ; else value_list_tail [ i ] -> next = vt ; value_list_tail [ i ] = vt ; } memcpy ( oid_list [ i ] . oid , vb -> name , sizeof ( oid ) * vb -> name_length ) ; oid_list [ i ] . oid_len = vb -> name_length ; } if ( res != NULL ) snmp_free_pdu ( res ) ; res = NULL ; } if ( res != NULL ) snmp_free_pdu ( res ) ; res = NULL ; <S2SV_StartBug> if ( req != NULL ) <S2SV_EndBug> snmp_free_pdu ( req ) ; req = NULL ; if ( status == 0 ) csnmp_dispatch_table ( host , data , instance_list_head , value_list_head ) ; while ( instance_list_head != NULL ) { csnmp_list_instances_t * next = instance_list_head -> next ; sfree ( instance_list_head ) ; instance_list_head = next ; } for ( i = 0 ; i < data -> values_len ; i ++ ) { while ( value_list_head [ i ] != NULL ) { csnmp_table_values_t * next = value_list_head [ i ] -> next ; sfree ( value_list_head [ i ] ) ; value_list_head [ i ] = next ; } } sfree ( value_list_head ) ; sfree ( value_list_tail ) ; return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> DEBUG ( \"snmp<S2SV_blank>plugin:<S2SV_blank>all<S2SV_blank>variables<S2SV_blank>have<S2SV_blank>left<S2SV_blank>their<S2SV_blank>subtree\" ) ; snmp_free_pdu ( req <S2SV_ModStart> = NULL ; <S2SV_ModEnd> sfree ( errstr <S2SV_ModStart> ; if ( <S2SV_ModEnd> status == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9262\n\n```\nCWE-190 int jas_stream_pad ( jas_stream_t * stream , int n , int c ) { <S2SV_StartBug> int m ; <S2SV_EndBug> m = n ; for ( m = n ; m > 0 ; -- m ) { if ( jas_stream_putc ( stream , c ) == EOF ) return n - m ; } return n ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int m ; if ( n < 0 ) { jas_deprecated ( \"negative<S2SV_blank>count<S2SV_blank>for<S2SV_blank>jas_stream_pad\" ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-20230\n\n```\nCWE-295 int context_init ( SERVICE_OPTIONS * section ) { # if OPENSSL_VERSION_NUMBER >= 0x10100000L if ( section -> option . client ) section -> ctx = SSL_CTX_new ( TLS_client_method ( ) ) ; else section -> ctx = SSL_CTX_new ( TLS_server_method ( ) ) ; if ( ! SSL_CTX_set_min_proto_version ( section -> ctx , section -> min_proto_version ) ) { s_log ( LOG_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>the<S2SV_blank>minimum<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>0x%X\" , section -> min_proto_version ) ; return 1 ; } if ( ! SSL_CTX_set_max_proto_version ( section -> ctx , section -> max_proto_version ) ) { s_log ( LOG_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>the<S2SV_blank>maximum<S2SV_blank>protocol<S2SV_blank>version<S2SV_blank>0x%X\" , section -> max_proto_version ) ; return 1 ; } # else if ( section -> option . client ) section -> ctx = SSL_CTX_new ( section -> client_method ) ; else section -> ctx = SSL_CTX_new ( section -> server_method ) ; # endif if ( ! section -> ctx ) { sslerror ( \"SSL_CTX_new\" ) ; return 1 ; } if ( ! SSL_CTX_set_ex_data ( section -> ctx , index_ssl_ctx_opt , section ) ) { sslerror ( \"SSL_CTX_set_ex_data\" ) ; return 1 ; } current_section = section ; <S2SV_StartBug> if ( section -> cipher_list ) { <S2SV_EndBug> s_log ( LOG_DEBUG , \"Ciphers:<S2SV_blank>%s\" , section -> cipher_list ) ; if ( ! SSL_CTX_set_cipher_list ( section -> ctx , section -> cipher_list ) ) { sslerror ( \"SSL_CTX_set_cipher_list\" ) ; return 1 ; } } # ifndef OPENSSL_NO_TLS1_3 if ( section -> ciphersuites ) { s_log ( LOG_DEBUG , \"TLSv1.3<S2SV_blank>ciphersuites:<S2SV_blank>%s\" , section -> ciphersuites ) ; if ( ! SSL_CTX_set_ciphersuites ( section -> ctx , section -> ciphersuites ) ) { sslerror ( \"SSL_CTX_set_ciphersuites\" ) ; return 1 ; } } # endif SSL_CTX_set_options ( section -> ctx , SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 ) ; # ifdef SSL_OP_NO_COMPRESSION SSL_CTX_clear_options ( section -> ctx , SSL_OP_NO_COMPRESSION ) ; # endif SSL_CTX_set_options ( section -> ctx , ( SSL_OPTIONS_TYPE ) ( section -> ssl_options_set ) ) ; # if OPENSSL_VERSION_NUMBER >= 0x009080dfL SSL_CTX_clear_options ( section -> ctx , ( SSL_OPTIONS_TYPE ) ( section -> ssl_options_clear ) ) ; # endif # if OPENSSL_VERSION_NUMBER >= 0x009080dfL s_log ( LOG_DEBUG , \"TLS<S2SV_blank>options:<S2SV_blank>0x%08lX<S2SV_blank>(+0x%08lX,<S2SV_blank>-0x%08lX)\" , SSL_CTX_get_options ( section -> ctx ) , section -> ssl_options_set , section -> ssl_options_clear ) ; # else s_log ( LOG_DEBUG , \"TLS<S2SV_blank>options:<S2SV_blank>0x%08lX<S2SV_blank>(+0x%08lX)\" , SSL_CTX_get_options ( section -> ctx ) , section -> ssl_options_set ) ; # endif if ( conf_init ( section ) ) return 1 ; # ifdef SSL_MODE_RELEASE_BUFFERS SSL_CTX_set_mode ( section -> ctx , SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER | SSL_MODE_RELEASE_BUFFERS ) ; # else SSL_CTX_set_mode ( section -> ctx , SSL_MODE_ENABLE_PARTIAL_WRITE | SSL_MODE_ACCEPT_MOVING_WRITE_BUFFER ) ; # endif # if OPENSSL_VERSION_NUMBER >= 0x10101000L SSL_CTX_set_session_ticket_cb ( section -> ctx , generate_session_ticket_cb , decrypt_session_ticket_cb , NULL ) ; # endif # if OPENSSL_VERSION_NUMBER >= 0x10000000L if ( ( section -> ticket_key ) && ( section -> ticket_mac ) ) SSL_CTX_set_tlsext_ticket_key_cb ( section -> ctx , ssl_tlsext_ticket_key_cb ) ; # endif if ( ! section -> option . client ) { unsigned servname_len = ( unsigned ) strlen ( section -> servname ) ; if ( servname_len > SSL_MAX_SSL_SESSION_ID_LENGTH ) servname_len = SSL_MAX_SSL_SESSION_ID_LENGTH ; if ( ! SSL_CTX_set_session_id_context ( section -> ctx , ( unsigned char * ) section -> servname , servname_len ) ) { sslerror ( \"SSL_CTX_set_session_id_context\" ) ; return 1 ; } } SSL_CTX_set_session_cache_mode ( section -> ctx , SSL_SESS_CACHE_BOTH | SSL_SESS_CACHE_NO_INTERNAL_STORE ) ; SSL_CTX_sess_set_cache_size ( section -> ctx , section -> session_size ) ; SSL_CTX_set_timeout ( section -> ctx , section -> session_timeout ) ; SSL_CTX_sess_set_new_cb ( section -> ctx , sess_new_cb ) ; SSL_CTX_sess_set_get_cb ( section -> ctx , sess_get_cb ) ; SSL_CTX_sess_set_remove_cb ( section -> ctx , sess_remove_cb ) ; SSL_CTX_set_info_callback ( section -> ctx , info_callback ) ; if ( auth_init ( section ) ) return 1 ; if ( verify_init ( section ) ) return 1 ; <S2SV_StartBug> if ( ! section -> option . client ) { <S2SV_EndBug> # ifndef OPENSSL_NO_TLSEXT SSL_CTX_set_tlsext_servername_callback ( section -> ctx , servername_cb ) ; # endif # ifndef OPENSSL_NO_DH dh_init ( section ) ; # endif # ifndef OPENSSL_NO_ECDH ecdh_init ( section ) ; # endif <S2SV_StartBug> } <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = section ; # if OPENSSL_VERSION_NUMBER >= 0x10100000L if ( section -> security_level >= 0 ) { SSL_CTX_set_security_level ( section -> ctx , section -> security_level ) ; s_log ( LOG_INFO , \"User-specified<S2SV_blank>security<S2SV_blank>level<S2SV_blank>set:<S2SV_blank>%d\" , section -> security_level ) ; } else if ( SSL_CTX_get_security_level ( section -> ctx ) < DEFAULT_SECURITY_LEVEL ) { SSL_CTX_set_security_level ( section -> ctx , DEFAULT_SECURITY_LEVEL ) ; s_log ( LOG_INFO , \"stunnel<S2SV_blank>default<S2SV_blank>security<S2SV_blank>level<S2SV_blank>set:<S2SV_blank>%d\" , DEFAULT_SECURITY_LEVEL ) ; } else { s_log ( LOG_INFO , \"OpenSSL<S2SV_blank>security<S2SV_blank>level<S2SV_blank>is<S2SV_blank>used:<S2SV_blank>%d\" , SSL_CTX_get_security_level ( section -> ctx ) ) ; } # endif <S2SV_ModStart> return 1 ; # ifndef OPENSSL_NO_TLSEXT <S2SV_ModStart> . client ) <S2SV_ModEnd> SSL_CTX_set_tlsext_servername_callback ( section <S2SV_ModStart> ; # endif <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13022\n\n```\nCWE-125 <S2SV_StartBug> static void <S2SV_EndBug> ip_printroute ( netdissect_options * ndo , register const u_char * cp , u_int length ) { register u_int ptr ; register u_int len ; if ( length < 3 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , length ) ) ; <S2SV_StartBug> return ; <S2SV_EndBug> } if ( ( length + 1 ) & 3 ) <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>length<S2SV_blank>%u]\" , length ) ) ; <S2SV_EndBug> ptr = cp [ 2 ] - 1 ; if ( ptr < 3 || ( ( ptr + 1 ) & 3 ) || ptr > length + 1 ) ND_PRINT ( ( ndo , \"<S2SV_blank>[bad<S2SV_blank>ptr<S2SV_blank>%u]\" , cp [ 2 ] ) ) ; for ( len = 3 ; len < length ; len += 4 ) { <S2SV_StartBug> ND_PRINT ( ( ndo , \"<S2SV_blank>%s\" , ipaddr_string ( ndo , & cp [ len ] ) ) ) ; <S2SV_EndBug> if ( ptr > len ) ND_PRINT ( ( ndo , \",\" ) ) ; <S2SV_StartBug> } <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> ip_printroute ( netdissect_options <S2SV_ModStart> ) ; return ( 0 ) <S2SV_ModStart> , length ) ) ; ND_TCHECK ( cp [ 2 ] <S2SV_ModStart> 4 ) { ND_TCHECK2 ( cp [ len ] , 4 ) ; <S2SV_ModStart> ) ; } return ( 0 ) ; trunc : return ( - 1 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void calc_pframe_target_size ( VP8_COMP * cpi ) { int min_frame_target ; int old_per_frame_bandwidth = cpi -> per_frame_bandwidth ; if ( cpi -> current_layer > 0 ) cpi -> per_frame_bandwidth = cpi -> layer_context [ cpi -> current_layer ] . avg_frame_size_for_layer ; min_frame_target = 0 ; if ( cpi -> pass == 2 ) { min_frame_target = cpi -> min_frame_bandwidth ; if ( min_frame_target < ( cpi -> av_per_frame_bandwidth >> 5 ) ) min_frame_target = cpi -> av_per_frame_bandwidth >> 5 ; } else if ( min_frame_target < cpi -> per_frame_bandwidth / 4 ) min_frame_target = cpi -> per_frame_bandwidth / 4 ; if ( ( cpi -> common . refresh_alt_ref_frame ) && ( cpi -> oxcf . number_of_layers == 1 ) ) { if ( cpi -> pass == 2 ) { cpi -> per_frame_bandwidth = cpi -> twopass . gf_bits ; cpi -> this_frame_target = cpi -> per_frame_bandwidth ; } } else { if ( cpi -> pass == 2 ) { cpi -> this_frame_target = cpi -> per_frame_bandwidth ; } else { int Adjustment ; if ( cpi -> kf_overspend_bits > 0 ) { Adjustment = ( cpi -> kf_bitrate_adjustment <= cpi -> kf_overspend_bits ) ? cpi -> kf_bitrate_adjustment : cpi -> kf_overspend_bits ; if ( Adjustment > ( cpi -> per_frame_bandwidth - min_frame_target ) ) Adjustment = ( cpi -> per_frame_bandwidth - min_frame_target ) ; cpi -> kf_overspend_bits -= Adjustment ; cpi -> this_frame_target = cpi -> per_frame_bandwidth - Adjustment ; if ( cpi -> this_frame_target < min_frame_target ) cpi -> this_frame_target = min_frame_target ; } else cpi -> this_frame_target = cpi -> per_frame_bandwidth ; if ( ( cpi -> gf_overspend_bits > 0 ) && ( cpi -> this_frame_target > min_frame_target ) ) { Adjustment = ( cpi -> non_gf_bitrate_adjustment <= cpi -> gf_overspend_bits ) ? cpi -> non_gf_bitrate_adjustment : cpi -> gf_overspend_bits ; if ( Adjustment > ( cpi -> this_frame_target - min_frame_target ) ) Adjustment = ( cpi -> this_frame_target - min_frame_target ) ; cpi -> gf_overspend_bits -= Adjustment ; cpi -> this_frame_target -= Adjustment ; } if ( ( cpi -> last_boost > 150 ) && ( cpi -> frames_till_gf_update_due > 0 ) && ( cpi -> current_gf_interval >= ( MIN_GF_INTERVAL << 1 ) ) ) { Adjustment = ( cpi -> last_boost - 100 ) >> 5 ; if ( Adjustment < 1 ) Adjustment = 1 ; else if ( Adjustment > 10 ) Adjustment = 10 ; Adjustment = ( cpi -> this_frame_target * Adjustment ) / 100 ; if ( Adjustment > ( cpi -> this_frame_target - min_frame_target ) ) Adjustment = ( cpi -> this_frame_target - min_frame_target ) ; if ( cpi -> frames_since_golden == ( cpi -> current_gf_interval >> 1 ) ) <S2SV_StartBug> cpi -> this_frame_target += ( ( cpi -> current_gf_interval - 1 ) * Adjustment ) ; <S2SV_EndBug> else cpi -> this_frame_target -= Adjustment ; } } } if ( cpi -> this_frame_target < min_frame_target ) cpi -> this_frame_target = min_frame_target ; if ( ! cpi -> common . refresh_alt_ref_frame ) cpi -> inter_frame_target = cpi -> this_frame_target ; if ( cpi -> pass == 0 ) { if ( cpi -> buffered_mode ) { int one_percent_bits = ( int ) ( 1 + cpi -> oxcf . optimal_buffer_level / 100 ) ; if ( ( cpi -> buffer_level < cpi -> oxcf . optimal_buffer_level ) || ( cpi -> bits_off_target < cpi -> oxcf . optimal_buffer_level ) ) { int percent_low = 0 ; if ( ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) && ( cpi -> buffer_level < cpi -> oxcf . optimal_buffer_level ) ) { percent_low = ( int ) ( ( cpi -> oxcf . optimal_buffer_level - cpi -> buffer_level ) / one_percent_bits ) ; } else if ( cpi -> bits_off_target < 0 ) { percent_low = ( int ) ( 100 * - cpi -> bits_off_target / ( cpi -> total_byte_count * 8 ) ) ; } if ( percent_low > cpi -> oxcf . under_shoot_pct ) percent_low = cpi -> oxcf . under_shoot_pct ; else if ( percent_low < 0 ) percent_low = 0 ; cpi -> this_frame_target -= ( cpi -> this_frame_target * percent_low ) / 200 ; if ( cpi -> auto_worst_q && cpi -> ni_frames > 150 ) { int64_t critical_buffer_level ; if ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) { critical_buffer_level = ( cpi -> buffer_level < cpi -> bits_off_target ) ? cpi -> buffer_level : cpi -> bits_off_target ; } else { critical_buffer_level = cpi -> bits_off_target ; } if ( critical_buffer_level < cpi -> oxcf . optimal_buffer_level ) { if ( critical_buffer_level > ( cpi -> oxcf . optimal_buffer_level >> 2 ) ) { int64_t qadjustment_range = cpi -> worst_quality - cpi -> ni_av_qi ; int64_t above_base = ( critical_buffer_level - ( cpi -> oxcf . optimal_buffer_level >> 2 ) ) ; cpi -> active_worst_quality = cpi -> worst_quality - ( int ) ( ( qadjustment_range * above_base ) / ( cpi -> oxcf . optimal_buffer_level * 3 >> 2 ) ) ; } else { cpi -> active_worst_quality = cpi -> worst_quality ; } } else { cpi -> active_worst_quality = cpi -> ni_av_qi ; } } else { cpi -> active_worst_quality = cpi -> worst_quality ; } } else { int percent_high = 0 ; if ( ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) && ( cpi -> buffer_level > cpi -> oxcf . optimal_buffer_level ) ) { percent_high = ( int ) ( ( cpi -> buffer_level - cpi -> oxcf . optimal_buffer_level ) / one_percent_bits ) ; } else if ( cpi -> bits_off_target > cpi -> oxcf . optimal_buffer_level ) { percent_high = ( int ) ( ( 100 * cpi -> bits_off_target ) / ( cpi -> total_byte_count * 8 ) ) ; } if ( percent_high > cpi -> oxcf . over_shoot_pct ) percent_high = cpi -> oxcf . over_shoot_pct ; else if ( percent_high < 0 ) percent_high = 0 ; cpi -> this_frame_target += ( cpi -> this_frame_target * percent_high ) / 200 ; if ( cpi -> auto_worst_q && cpi -> ni_frames > 150 ) { cpi -> active_worst_quality = cpi -> ni_av_qi ; } else { cpi -> active_worst_quality = cpi -> worst_quality ; } } cpi -> active_best_quality = cpi -> best_quality ; if ( cpi -> active_worst_quality <= cpi -> active_best_quality ) cpi -> active_worst_quality = cpi -> active_best_quality + 1 ; if ( cpi -> active_worst_quality > 127 ) cpi -> active_worst_quality = 127 ; } else { cpi -> active_worst_quality = cpi -> worst_quality ; } if ( cpi -> oxcf . end_usage == USAGE_CONSTRAINED_QUALITY && cpi -> active_worst_quality < cpi -> cq_target_quality ) { cpi -> active_worst_quality = cpi -> cq_target_quality ; } } if ( cpi -> drop_frames_allowed && ( cpi -> oxcf . end_usage == USAGE_STREAM_FROM_SERVER ) && ( ( cpi -> common . frame_type != KEY_FRAME ) ) ) { if ( ( cpi -> buffer_level < 0 ) ) { # if 0 FILE * f = fopen ( \"dec.stt\" , \"a\" ) ; fprintf ( f , \"%10d<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>%10d<S2SV_blank>*****<S2SV_blank>BUFFER<S2SV_blank>EMPTY\\\\n\" , ( int ) cpi -> common . current_video_frame , cpi -> decimation_factor , cpi -> common . horiz_scale , ( cpi -> buffer_level * 100 ) / cpi -> oxcf . optimal_buffer_level ) ; fclose ( f ) ; # endif cpi -> drop_frame = 1 ; cpi -> bits_off_target += cpi -> av_per_frame_bandwidth ; if ( cpi -> bits_off_target > cpi -> oxcf . maximum_buffer_size ) cpi -> bits_off_target = ( int ) cpi -> oxcf . maximum_buffer_size ; cpi -> buffer_level = cpi -> bits_off_target ; if ( cpi -> oxcf . number_of_layers > 1 ) { unsigned int i ; for ( i = cpi -> current_layer + 1 ; i < cpi -> oxcf . number_of_layers ; i ++ ) { LAYER_CONTEXT * lc = & cpi -> layer_context [ i ] ; lc -> bits_off_target += ( int ) ( lc -> target_bandwidth / lc -> framerate ) ; if ( lc -> bits_off_target > lc -> maximum_buffer_size ) lc -> bits_off_target = lc -> maximum_buffer_size ; lc -> buffer_level = lc -> bits_off_target ; } } } } if ( cpi -> oxcf . error_resilient_mode == 0 && ( cpi -> frames_till_gf_update_due == 0 ) && ! cpi -> drop_frame ) { int Q = ( cpi -> oxcf . fixed_q < 0 ) ? cpi -> last_q [ INTER_FRAME ] : cpi -> oxcf . fixed_q ; int gf_frame_useage = 0 ; int tot_mbs = cpi -> recent_ref_frame_usage [ INTRA_FRAME ] + cpi -> recent_ref_frame_usage [ LAST_FRAME ] + cpi -> recent_ref_frame_usage [ GOLDEN_FRAME ] + cpi -> recent_ref_frame_usage [ ALTREF_FRAME ] ; int pct_gf_active = ( 100 * cpi -> gf_active_count ) / ( cpi -> common . mb_rows * cpi -> common . mb_cols ) ; if ( tot_mbs ) gf_frame_useage = ( cpi -> recent_ref_frame_usage [ GOLDEN_FRAME ] + cpi -> recent_ref_frame_usage [ ALTREF_FRAME ] ) * 100 / tot_mbs ; if ( pct_gf_active > gf_frame_useage ) gf_frame_useage = pct_gf_active ; if ( cpi -> auto_gold ) { if ( ( cpi -> pass == 0 ) && ( cpi -> this_frame_percent_intra < 15 || gf_frame_useage >= 5 ) ) cpi -> common . refresh_golden_frame = 1 ; else if ( cpi -> pass == 2 ) cpi -> common . refresh_golden_frame = 1 ; } # if 0 if ( 0 ) { FILE * f ; f = fopen ( \"gf_useaget.stt\" , \"a\" ) ; fprintf ( f , \"<S2SV_blank>%8ld<S2SV_blank>%10ld<S2SV_blank>%10ld<S2SV_blank>%10ld<S2SV_blank>%10ld\\\\n\" , cpi -> common . current_video_frame , cpi -> gfu_boost , GFQ_ADJUSTMENT , cpi -> gfu_boost , gf_frame_useage ) ; fclose ( f ) ; } # endif if ( cpi -> common . refresh_golden_frame == 1 ) { # if 0 if ( 0 ) { FILE * f ; f = fopen ( \"GFexit.stt\" , \"a\" ) ; fprintf ( f , \"%8ld<S2SV_blank>GF<S2SV_blank>coded\\\\n\" , cpi -> common . current_video_frame ) ; fclose ( f ) ; } # endif if ( cpi -> auto_adjust_gold_quantizer ) { calc_gf_params ( cpi ) ; } if ( ! cpi -> source_alt_ref_active ) { if ( cpi -> oxcf . fixed_q < 0 ) { if ( cpi -> pass == 2 ) { cpi -> this_frame_target = cpi -> per_frame_bandwidth ; } else { int Boost = cpi -> last_boost ; int frames_in_section = cpi -> frames_till_gf_update_due + 1 ; int allocation_chunks = ( frames_in_section * 100 ) + ( Boost - 100 ) ; int bits_in_section = cpi -> inter_frame_target * frames_in_section ; while ( Boost > 1000 ) { Boost /= 2 ; allocation_chunks /= 2 ; } if ( ( bits_in_section >> 7 ) > allocation_chunks ) cpi -> this_frame_target = Boost * ( bits_in_section / allocation_chunks ) ; else cpi -> this_frame_target = ( Boost * bits_in_section ) / allocation_chunks ; } } else cpi -> this_frame_target = ( estimate_bits_at_q ( 1 , Q , cpi -> common . MBs , 1.0 ) * cpi -> last_boost ) / 100 ; } else { cpi -> this_frame_target = 0 ; } cpi -> current_gf_interval = cpi -> frames_till_gf_update_due ; } } cpi -> per_frame_bandwidth = old_per_frame_bandwidth ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ) { Adjustment = <S2SV_ModEnd> ( cpi -> <S2SV_ModStart> ) * Adjustment ; if ( Adjustment > ( 10 * cpi -> this_frame_target ) / 100 ) Adjustment = ( 10 * cpi -> this_frame_target ) / 100 ; cpi -> this_frame_target += Adjustment ; } <S2SV_ModEnd> else cpi ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3120\n\n```\nCWE-476 int validate_as_request ( kdc_realm_t * kdc_active_realm , register krb5_kdc_req * request , krb5_db_entry client , krb5_db_entry server , krb5_timestamp kdc_time , const char * * status , krb5_pa_data * * * e_data ) { int errcode ; krb5_error_code ret ; if ( request -> kdc_options & AS_INVALID_OPTIONS ) { * status = \"INVALID<S2SV_blank>AS<S2SV_blank>OPTIONS\" ; return KDC_ERR_BADOPTION ; } if ( client . expiration && client . expiration < kdc_time ) { * status = \"CLIENT<S2SV_blank>EXPIRED\" ; if ( vague_errors ) return ( KRB_ERR_GENERIC ) ; else return ( KDC_ERR_NAME_EXP ) ; } if ( client . pw_expiration && client . pw_expiration < kdc_time && ! isflagset ( server . attributes , KRB5_KDB_PWCHANGE_SERVICE ) ) { * status = \"CLIENT<S2SV_blank>KEY<S2SV_blank>EXPIRED\" ; if ( vague_errors ) return ( KRB_ERR_GENERIC ) ; else return ( KDC_ERR_KEY_EXP ) ; } if ( server . expiration && server . expiration < kdc_time ) { * status = \"SERVICE<S2SV_blank>EXPIRED\" ; return ( KDC_ERR_SERVICE_EXP ) ; } if ( isflagset ( client . attributes , KRB5_KDB_REQUIRES_PWCHANGE ) && ! isflagset ( server . attributes , KRB5_KDB_PWCHANGE_SERVICE ) ) { * status = \"REQUIRED<S2SV_blank>PWCHANGE\" ; return ( KDC_ERR_KEY_EXP ) ; } if ( ( isflagset ( request -> kdc_options , KDC_OPT_ALLOW_POSTDATE ) || isflagset ( request -> kdc_options , KDC_OPT_POSTDATED ) ) && ( isflagset ( client . attributes , KRB5_KDB_DISALLOW_POSTDATED ) || isflagset ( server . attributes , KRB5_KDB_DISALLOW_POSTDATED ) ) ) { * status = \"POSTDATE<S2SV_blank>NOT<S2SV_blank>ALLOWED\" ; return ( KDC_ERR_CANNOT_POSTDATE ) ; } if ( isflagset ( request -> kdc_options , KDC_OPT_PROXIABLE ) && ( isflagset ( client . attributes , KRB5_KDB_DISALLOW_PROXIABLE ) || isflagset ( server . attributes , KRB5_KDB_DISALLOW_PROXIABLE ) ) ) { * status = \"PROXIABLE<S2SV_blank>NOT<S2SV_blank>ALLOWED\" ; return ( KDC_ERR_POLICY ) ; } if ( isflagset ( client . attributes , KRB5_KDB_DISALLOW_ALL_TIX ) ) { * status = \"CLIENT<S2SV_blank>LOCKED<S2SV_blank>OUT\" ; return ( KDC_ERR_CLIENT_REVOKED ) ; } if ( isflagset ( server . attributes , KRB5_KDB_DISALLOW_ALL_TIX ) ) { * status = \"SERVICE<S2SV_blank>LOCKED<S2SV_blank>OUT\" ; return ( KDC_ERR_S_PRINCIPAL_UNKNOWN ) ; } if ( isflagset ( server . attributes , KRB5_KDB_DISALLOW_SVR ) ) { * status = \"SERVICE<S2SV_blank>NOT<S2SV_blank>ALLOWED\" ; return ( KDC_ERR_MUST_USE_USER2USER ) ; } <S2SV_StartBug> if ( check_anon ( kdc_active_realm , request -> client , request -> server ) != 0 ) { <S2SV_EndBug> * status = \"ANONYMOUS<S2SV_blank>NOT<S2SV_blank>ALLOWED\" ; return ( KDC_ERR_POLICY ) ; } ret = krb5_db_check_policy_as ( kdc_context , request , & client , & server , kdc_time , status , e_data ) ; if ( ret && ret != KRB5_PLUGIN_OP_NOTSUPP ) return errcode_to_protocol ( ret ) ; errcode = against_local_policy_as ( request , client , server , kdc_time , status , e_data ) ; if ( errcode ) return errcode ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( kdc_active_realm , client . princ <S2SV_ModEnd> , request ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4913\n\n```\nCWE-20 int rose_parse_facilities ( unsigned char * p , struct rose_facilities_struct * facilities ) { int facilities_len , len ; facilities_len = * p ++ ; if ( facilities_len == 0 ) return 0 ; while ( facilities_len > 0 ) { if ( * p == 0x00 ) { facilities_len -- ; p ++ ; switch ( * p ) { case FAC_NATIONAL : len = rose_parse_national ( p + 1 , facilities , facilities_len - 1 ) ; <S2SV_StartBug> facilities_len -= len + 1 ; <S2SV_EndBug> p += len + 1 ; break ; case FAC_CCITT : len = rose_parse_ccitt ( p + 1 , facilities , facilities_len - 1 ) ; <S2SV_StartBug> facilities_len -= len + 1 ; <S2SV_EndBug> p += len + 1 ; break ; default : printk ( KERN_DEBUG \"ROSE:<S2SV_blank>rose_parse_facilities<S2SV_blank>-<S2SV_blank>unknown<S2SV_blank>facilities<S2SV_blank>family<S2SV_blank>%02X\\\\n\" , * p ) ; facilities_len -- ; p ++ ; break ; } } else break ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( len < 0 ) return 0 ; <S2SV_ModStart> 1 ) ; if ( len < 0 ) return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4588\n\n```\nCWE-119 static int do_ip_vs_get_ctl ( struct sock * sk , int cmd , void __user * user , int * len ) { unsigned char arg [ 128 ] ; int ret = 0 ; <S2SV_StartBug> if ( ! capable ( CAP_NET_ADMIN ) ) <S2SV_EndBug> <S2SV_StartBug> return - EPERM ; <S2SV_EndBug> if ( * len < get_arglen [ GET_CMDID ( cmd ) ] ) { pr_err ( \"get_ctl:<S2SV_blank>len<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u\\\\n\" , * len , get_arglen [ GET_CMDID ( cmd ) ] ) ; return - EINVAL ; } <S2SV_StartBug> if ( copy_from_user ( arg , user , get_arglen [ GET_CMDID ( cmd ) ] ) != 0 ) <S2SV_EndBug> return - EFAULT ; if ( mutex_lock_interruptible ( & __ip_vs_mutex ) ) return - ERESTARTSYS ; switch ( cmd ) { case IP_VS_SO_GET_VERSION : { char buf [ 64 ] ; sprintf ( buf , \"IP<S2SV_blank>Virtual<S2SV_blank>Server<S2SV_blank>version<S2SV_blank>%d.%d.%d<S2SV_blank>(size=%d)\" , NVERSION ( IP_VS_VERSION_CODE ) , IP_VS_CONN_TAB_SIZE ) ; if ( copy_to_user ( user , buf , strlen ( buf ) + 1 ) != 0 ) { ret = - EFAULT ; goto out ; } * len = strlen ( buf ) + 1 ; } break ; case IP_VS_SO_GET_INFO : { struct ip_vs_getinfo info ; info . version = IP_VS_VERSION_CODE ; info . size = IP_VS_CONN_TAB_SIZE ; info . num_services = ip_vs_num_services ; if ( copy_to_user ( user , & info , sizeof ( info ) ) != 0 ) ret = - EFAULT ; } break ; case IP_VS_SO_GET_SERVICES : { struct ip_vs_get_services * get ; int size ; get = ( struct ip_vs_get_services * ) arg ; size = sizeof ( * get ) + sizeof ( struct ip_vs_service_entry ) * get -> num_services ; if ( * len != size ) { pr_err ( \"length:<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u\\\\n\" , * len , size ) ; ret = - EINVAL ; goto out ; } ret = __ip_vs_get_service_entries ( get , user ) ; } break ; case IP_VS_SO_GET_SERVICE : { struct ip_vs_service_entry * entry ; struct ip_vs_service * svc ; union nf_inet_addr addr ; entry = ( struct ip_vs_service_entry * ) arg ; addr . ip = entry -> addr ; if ( entry -> fwmark ) svc = __ip_vs_svc_fwm_get ( AF_INET , entry -> fwmark ) ; else svc = __ip_vs_service_get ( AF_INET , entry -> protocol , & addr , entry -> port ) ; if ( svc ) { ip_vs_copy_service ( entry , svc ) ; if ( copy_to_user ( user , entry , sizeof ( * entry ) ) != 0 ) ret = - EFAULT ; ip_vs_service_put ( svc ) ; } else ret = - ESRCH ; } break ; case IP_VS_SO_GET_DESTS : { struct ip_vs_get_dests * get ; int size ; get = ( struct ip_vs_get_dests * ) arg ; size = sizeof ( * get ) + sizeof ( struct ip_vs_dest_entry ) * get -> num_dests ; if ( * len != size ) { pr_err ( \"length:<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>%u\\\\n\" , * len , size ) ; ret = - EINVAL ; goto out ; } ret = __ip_vs_get_dest_entries ( get , user ) ; } break ; case IP_VS_SO_GET_TIMEOUT : { struct ip_vs_timeout_user t ; __ip_vs_get_timeouts ( & t ) ; if ( copy_to_user ( user , & t , sizeof ( t ) ) != 0 ) ret = - EFAULT ; } break ; case IP_VS_SO_GET_DAEMON : { struct ip_vs_daemon_user d [ 2 ] ; memset ( & d , 0 , sizeof ( d ) ) ; if ( ip_vs_sync_state & IP_VS_STATE_MASTER ) { d [ 0 ] . state = IP_VS_STATE_MASTER ; strlcpy ( d [ 0 ] . mcast_ifn , ip_vs_master_mcast_ifn , sizeof ( d [ 0 ] . mcast_ifn ) ) ; d [ 0 ] . syncid = ip_vs_master_syncid ; } if ( ip_vs_sync_state & IP_VS_STATE_BACKUP ) { d [ 1 ] . state = IP_VS_STATE_BACKUP ; strlcpy ( d [ 1 ] . mcast_ifn , ip_vs_backup_mcast_ifn , sizeof ( d [ 1 ] . mcast_ifn ) ) ; d [ 1 ] . syncid = ip_vs_backup_syncid ; } if ( copy_to_user ( user , & d , sizeof ( d ) ) != 0 ) ret = - EFAULT ; } break ; default : ret = - EINVAL ; } out : mutex_unlock ( & __ip_vs_mutex ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; unsigned int copylen ; <S2SV_ModStart> return - EPERM ; if ( cmd < IP_VS_BASE_CTL || cmd > IP_VS_SO_GET_MAX ) return - EINVAL <S2SV_ModStart> EINVAL ; } copylen = get_arglen [ GET_CMDID ( cmd ) ] ; if ( copylen > 128 ) return - EINVAL ; <S2SV_ModStart> , user , copylen <S2SV_ModEnd> ) != 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13018\n\n```\nCWE-125 void pgm_print ( netdissect_options * ndo , register const u_char * bp , register u_int length , register const u_char * bp2 ) { register const struct pgm_header * pgm ; register const struct ip * ip ; register char ch ; uint16_t sport , dport ; u_int nla_afnum ; char nla_buf [ INET6_ADDRSTRLEN ] ; register const struct ip6_hdr * ip6 ; uint8_t opt_type , opt_len ; uint32_t seq , opts_len , len , offset ; pgm = ( const struct pgm_header * ) bp ; ip = ( const struct ip * ) bp2 ; if ( IP_V ( ip ) == 6 ) ip6 = ( const struct ip6_hdr * ) bp2 ; else ip6 = NULL ; ch = '\\\\0' ; if ( ! ND_TTEST ( pgm -> pgm_dport ) ) { if ( ip6 ) { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) ) ) ; return ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>[|pgm]\" , ipaddr_string ( ndo , & ip -> ip_src ) , ipaddr_string ( ndo , & ip -> ip_dst ) ) ) ; return ; } } sport = EXTRACT_16BITS ( & pgm -> pgm_sport ) ; dport = EXTRACT_16BITS ( & pgm -> pgm_dport ) ; if ( ip6 ) { if ( ip6 -> ip6_nxt == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ip6addr_string ( ndo , & ip6 -> ip6_src ) , tcpport_string ( ndo , sport ) , ip6addr_string ( ndo , & ip6 -> ip6_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } else { if ( ip -> ip_p == IPPROTO_PGM ) { ND_PRINT ( ( ndo , \"%s.%s<S2SV_blank>><S2SV_blank>%s.%s:<S2SV_blank>\" , ipaddr_string ( ndo , & ip -> ip_src ) , tcpport_string ( ndo , sport ) , ipaddr_string ( ndo , & ip -> ip_dst ) , tcpport_string ( ndo , dport ) ) ) ; } else { ND_PRINT ( ( ndo , \"%s<S2SV_blank>><S2SV_blank>%s:<S2SV_blank>\" , tcpport_string ( ndo , sport ) , tcpport_string ( ndo , dport ) ) ) ; } } ND_TCHECK ( * pgm ) ; ND_PRINT ( ( ndo , \"PGM,<S2SV_blank>length<S2SV_blank>%u\" , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ) ; if ( ! ndo -> ndo_vflag ) return ; ND_PRINT ( ( ndo , \"<S2SV_blank>0x%02x%02x%02x%02x%02x%02x<S2SV_blank>\" , pgm -> pgm_gsid [ 0 ] , pgm -> pgm_gsid [ 1 ] , pgm -> pgm_gsid [ 2 ] , pgm -> pgm_gsid [ 3 ] , pgm -> pgm_gsid [ 4 ] , pgm -> pgm_gsid [ 5 ] ) ) ; switch ( pgm -> pgm_type ) { case PGM_SPM : { const struct pgm_spm * spm ; spm = ( const struct pgm_spm * ) ( pgm + 1 ) ; ND_TCHECK ( * spm ) ; bp = ( const u_char * ) ( spm + 1 ) ; switch ( EXTRACT_16BITS ( & spm -> pgms_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"SPM<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>lead<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s\" , EXTRACT_32BITS ( & spm -> pgms_seq ) , EXTRACT_32BITS ( & spm -> pgms_trailseq ) , EXTRACT_32BITS ( & spm -> pgms_leadseq ) , nla_buf ) ) ; break ; } case PGM_POLL : { const struct pgm_poll * poll_msg ; poll_msg = ( const struct pgm_poll * ) ( pgm + 1 ) ; ND_TCHECK ( * poll_msg ) ; ND_PRINT ( ( ndo , \"POLL<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u\" , EXTRACT_32BITS ( & poll_msg -> pgmp_seq ) , EXTRACT_16BITS ( & poll_msg -> pgmp_round ) ) ) ; bp = ( const u_char * ) ( poll_msg + 1 ) ; break ; } case PGM_POLR : { const struct pgm_polr * polr ; uint32_t ivl , rnd , mask ; polr = ( const struct pgm_polr * ) ( pgm + 1 ) ; ND_TCHECK ( * polr ) ; bp = ( const u_char * ) ( polr + 1 ) ; switch ( EXTRACT_16BITS ( & polr -> pgmp_nla_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; ivl = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; rnd = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; mask = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"POLR<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>round<S2SV_blank>%u<S2SV_blank>nla<S2SV_blank>%s<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>rnd<S2SV_blank>0x%08x<S2SV_blank>\" \"mask<S2SV_blank>0x%08x\" , EXTRACT_32BITS ( & polr -> pgmp_seq ) , EXTRACT_16BITS ( & polr -> pgmp_round ) , nla_buf , ivl , rnd , mask ) ) ; break ; } case PGM_ODATA : { const struct pgm_data * odata ; odata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * odata ) ; ND_PRINT ( ( ndo , \"ODATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & odata -> pgmd_trailseq ) , EXTRACT_32BITS ( & odata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( odata + 1 ) ; break ; } case PGM_RDATA : { const struct pgm_data * rdata ; rdata = ( const struct pgm_data * ) ( pgm + 1 ) ; ND_TCHECK ( * rdata ) ; ND_PRINT ( ( ndo , \"RDATA<S2SV_blank>trail<S2SV_blank>%u<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & rdata -> pgmd_trailseq ) , EXTRACT_32BITS ( & rdata -> pgmd_seq ) ) ) ; bp = ( const u_char * ) ( rdata + 1 ) ; break ; } case PGM_NAK : case PGM_NULLNAK : case PGM_NCF : { const struct pgm_nak * nak ; char source_buf [ INET6_ADDRSTRLEN ] , group_buf [ INET6_ADDRSTRLEN ] ; nak = ( const struct pgm_nak * ) ( pgm + 1 ) ; ND_TCHECK ( * nak ) ; bp = ( const u_char * ) ( nak + 1 ) ; switch ( EXTRACT_16BITS ( & nak -> pgmn_source_afi ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , source_buf , sizeof ( source_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( EXTRACT_16BITS ( bp ) ) { case AFNUM_INET : ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , group_buf , sizeof ( group_buf ) ) ; bp += sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } switch ( pgm -> pgm_type ) { case PGM_NAK : ND_PRINT ( ( ndo , \"NAK<S2SV_blank>\" ) ) ; break ; case PGM_NULLNAK : ND_PRINT ( ( ndo , \"NNAK<S2SV_blank>\" ) ) ; break ; case PGM_NCF : ND_PRINT ( ( ndo , \"NCF<S2SV_blank>\" ) ) ; break ; default : break ; } ND_PRINT ( ( ndo , \"(%s<S2SV_blank>-><S2SV_blank>%s),<S2SV_blank>seq<S2SV_blank>%u\" , source_buf , group_buf , EXTRACT_32BITS ( & nak -> pgmn_seq ) ) ) ; break ; } case PGM_ACK : { const struct pgm_ack * ack ; ack = ( const struct pgm_ack * ) ( pgm + 1 ) ; ND_TCHECK ( * ack ) ; ND_PRINT ( ( ndo , \"ACK<S2SV_blank>seq<S2SV_blank>%u\" , EXTRACT_32BITS ( & ack -> pgma_rx_max_seq ) ) ) ; bp = ( const u_char * ) ( ack + 1 ) ; break ; } case PGM_SPMR : ND_PRINT ( ( ndo , \"SPMR\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"UNKNOWN<S2SV_blank>type<S2SV_blank>0x%02x\" , pgm -> pgm_type ) ) ; break ; } if ( pgm -> pgm_options & PGM_OPT_BIT_PRESENT ) { if ( ! ND_TTEST2 ( * bp , PGM_MIN_OPT_LEN ) ) { ND_PRINT ( ( ndo , \"[|OPT]\" ) ) ; return ; } opt_type = * bp ++ ; if ( ( opt_type & PGM_OPT_MASK ) != PGM_OPT_LENGTH ) { ND_PRINT ( ( ndo , \"[First<S2SV_blank>option<S2SV_blank>bad,<S2SV_blank>should<S2SV_blank>be<S2SV_blank>PGM_OPT_LENGTH,<S2SV_blank>is<S2SV_blank>%u]\" , opt_type & PGM_OPT_MASK ) ) ; return ; } opt_len = * bp ++ ; if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } opts_len = EXTRACT_16BITS ( bp ) ; if ( opts_len < 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>4]\" , opts_len ) ) ; return ; } bp += sizeof ( uint16_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>%d\" , opts_len ) ) ; opts_len -= 4 ; while ( opts_len ) { if ( opts_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } <S2SV_StartBug> opt_type = * bp ++ ; <S2SV_EndBug> opt_len = * bp ++ ; if ( opt_len < PGM_MIN_OPT_LEN ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank><<S2SV_blank>%u]\" , opt_len , PGM_MIN_OPT_LEN ) ) ; break ; } if ( opts_len < opt_len ) { ND_PRINT ( ( ndo , \"[Total<S2SV_blank>option<S2SV_blank>length<S2SV_blank>leaves<S2SV_blank>no<S2SV_blank>room<S2SV_blank>for<S2SV_blank>final<S2SV_blank>option]\" ) ) ; return ; } if ( ! ND_TTEST2 ( * bp , opt_len - 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; } switch ( opt_type & PGM_OPT_MASK ) { case PGM_OPT_LENGTH : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_LENGTH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } ND_PRINT ( ( ndo , \"<S2SV_blank>OPTS<S2SV_blank>LEN<S2SV_blank>(extra?)<S2SV_blank>%d\" , EXTRACT_16BITS ( bp ) ) ) ; bp += sizeof ( uint16_t ) ; opts_len -= 4 ; break ; case PGM_OPT_FRAGMENT : if ( opt_len != 16 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FRAGMENT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>16]\" , opt_len ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>FRAG<S2SV_blank>seq<S2SV_blank>%u<S2SV_blank>off<S2SV_blank>%u<S2SV_blank>len<S2SV_blank>%u\" , seq , offset , len ) ) ; opts_len -= 16 ; break ; case PGM_OPT_NAK_LIST : bp += 2 ; opt_len -= sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>NAK<S2SV_blank>LIST\" ) ) ; while ( opt_len ) { if ( opt_len < sizeof ( uint32_t ) ) { ND_PRINT ( ( ndo , \"[Option<S2SV_blank>length<S2SV_blank>not<S2SV_blank>a<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>4]\" ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( uint32_t ) ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>%u\" , EXTRACT_32BITS ( bp ) ) ) ; bp += sizeof ( uint32_t ) ; opt_len -= sizeof ( uint32_t ) ; opts_len -= sizeof ( uint32_t ) ; } break ; case PGM_OPT_JOIN : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_JOIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>JOIN<S2SV_blank>%u\" , seq ) ) ; opts_len -= 8 ; break ; case PGM_OPT_NAK_BO_IVL : if ( opt_len != 12 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_IVL<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12]\" , opt_len ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>ivl<S2SV_blank>%u<S2SV_blank>ivlseq<S2SV_blank>%u\" , offset , seq ) ) ; opts_len -= 12 ; break ; case PGM_OPT_NAK_BO_RNG : if ( opt_len != 12 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NAK_BO_RNG<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12]\" , opt_len ) ) ; return ; } bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>BACKOFF<S2SV_blank>max<S2SV_blank>%u<S2SV_blank>min<S2SV_blank>%u\" , offset , seq ) ) ; opts_len -= 12 ; break ; case PGM_OPT_REDIRECT : bp += 2 ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != 4 + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= 4 + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != 4 + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_REDIRECT<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= 4 + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>REDIRECT<S2SV_blank>%s\" , nla_buf ) ) ; break ; case PGM_OPT_PARITY_PRM : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_PRM<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>MAXTGS<S2SV_blank>%u\" , len ) ) ; opts_len -= 8 ; break ; case PGM_OPT_PARITY_GRP : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PARITY_GRP<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; seq = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>GROUP<S2SV_blank>%u\" , seq ) ) ; opts_len -= 8 ; break ; case PGM_OPT_CURR_TGSIZE : if ( opt_len != 8 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CURR_TGSIZE<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>8]\" , opt_len ) ) ; return ; } bp += 2 ; len = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; ND_PRINT ( ( ndo , \"<S2SV_blank>PARITY<S2SV_blank>ATGS<S2SV_blank>%u\" , len ) ) ; opts_len -= 8 ; break ; case PGM_OPT_NBR_UNREACH : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_NBR_UNREACH<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>NBR_UNREACH\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_PATH_NLA : ND_PRINT ( ( ndo , \"<S2SV_blank>PATH_NLA<S2SV_blank>[%d]\" , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_SYN : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_SYN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>SYN\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_FIN : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_FIN<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>FIN\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_RST : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_RST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>RST\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_CR : ND_PRINT ( ( ndo , \"<S2SV_blank>CR\" ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; case PGM_OPT_CRQST : if ( opt_len != 4 ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_CRQST<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>4]\" , opt_len ) ) ; return ; } bp += 2 ; ND_PRINT ( ( ndo , \"<S2SV_blank>CRQST\" ) ) ; opts_len -= 4 ; break ; case PGM_OPT_PGMCC_DATA : bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != 12 + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= 12 + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != 12 + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= 12 + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>DATA<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; case PGM_OPT_PGMCC_FEEDBACK : bp += 2 ; offset = EXTRACT_32BITS ( bp ) ; bp += sizeof ( uint32_t ) ; nla_afnum = EXTRACT_16BITS ( bp ) ; bp += ( 2 * sizeof ( uint16_t ) ) ; switch ( nla_afnum ) { case AFNUM_INET : if ( opt_len != 12 + sizeof ( struct in_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in_addr ) ) ; addrtostr ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in_addr ) ; opts_len -= 12 + sizeof ( struct in_addr ) ; break ; case AFNUM_INET6 : if ( opt_len != 12 + sizeof ( struct in6_addr ) ) { ND_PRINT ( ( ndo , \"[Bad<S2SV_blank>OPT_PGMCC_DATA<S2SV_blank>option,<S2SV_blank>length<S2SV_blank>%u<S2SV_blank>!=<S2SV_blank>12<S2SV_blank>+<S2SV_blank>address<S2SV_blank>size]\" , opt_len ) ) ; return ; } ND_TCHECK2 ( * bp , sizeof ( struct in6_addr ) ) ; addrtostr6 ( bp , nla_buf , sizeof ( nla_buf ) ) ; bp += sizeof ( struct in6_addr ) ; opts_len -= 12 + sizeof ( struct in6_addr ) ; break ; default : goto trunc ; break ; } ND_PRINT ( ( ndo , \"<S2SV_blank>PGMCC<S2SV_blank>FEEDBACK<S2SV_blank>%u<S2SV_blank>%s\" , offset , nla_buf ) ) ; break ; default : ND_PRINT ( ( ndo , \"<S2SV_blank>OPT_%02X<S2SV_blank>[%d]<S2SV_blank>\" , opt_type , opt_len ) ) ; bp += opt_len ; opts_len -= opt_len ; break ; } if ( opt_type & PGM_OPT_END ) break ; } } ND_PRINT ( ( ndo , \"<S2SV_blank>[%u]\" , length ) ) ; if ( ndo -> ndo_packettype == PT_PGM_ZMTP1 && ( pgm -> pgm_type == PGM_ODATA || pgm -> pgm_type == PGM_RDATA ) ) zmtp1_print_datagram ( ndo , bp , EXTRACT_16BITS ( & pgm -> pgm_length ) ) ; return ; trunc : ND_PRINT ( ( ndo , \"[|pgm]\" ) ) ; if ( ch != '\\\\0' ) ND_PRINT ( ( ndo , \">\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } if ( ! ND_TTEST2 ( * bp , 2 ) ) { ND_PRINT ( ( ndo , \"<S2SV_blank>[|OPT]\" ) ) ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rd_pick_intra_mode_sb ( VP9_COMP * cpi , MACROBLOCK * x , <S2SV_StartBug> int * returnrate , int64_t * returndist , <S2SV_EndBug> BLOCK_SIZE bsize , PICK_MODE_CONTEXT * ctx , int64_t best_rd ) { VP9_COMMON * const cm = & cpi -> common ; MACROBLOCKD * const xd = & x -> e_mbd ; <S2SV_StartBug> int rate_y = 0 , rate_uv = 0 , rate_y_tokenonly = 0 , rate_uv_tokenonly = 0 ; <S2SV_EndBug> int y_skip = 0 , uv_skip = 0 ; <S2SV_StartBug> int64_t dist_y = 0 , dist_uv = 0 , tx_cache [ TX_MODES ] = { 0 } ; <S2SV_EndBug> TX_SIZE max_uv_tx_size ; x -> skip_encode = 0 ; ctx -> skip = 0 ; xd -> mi [ 0 ] -> mbmi . ref_frame [ 0 ] = INTRA_FRAME ; <S2SV_StartBug> if ( bsize >= BLOCK_8X8 ) { <S2SV_EndBug> if ( rd_pick_intra_sby_mode ( cpi , x , & rate_y , & rate_y_tokenonly , <S2SV_StartBug> & dist_y , & y_skip , bsize , tx_cache , <S2SV_EndBug> best_rd ) >= best_rd ) { <S2SV_StartBug> * returnrate = INT_MAX ; <S2SV_EndBug> <S2SV_StartBug> return ; <S2SV_EndBug> } <S2SV_StartBug> max_uv_tx_size = get_uv_tx_size_impl ( xd -> mi [ 0 ] -> mbmi . tx_size , bsize ) ; <S2SV_EndBug> rd_pick_intra_sbuv_mode ( cpi , x , ctx , & rate_uv , & rate_uv_tokenonly , <S2SV_StartBug> & dist_uv , & uv_skip , bsize , max_uv_tx_size ) ; <S2SV_EndBug> <S2SV_StartBug> } else { <S2SV_EndBug> y_skip = 0 ; if ( rd_pick_intra_sub_8x8_y_mode ( cpi , x , & rate_y , & rate_y_tokenonly , & dist_y , best_rd ) >= best_rd ) { * returnrate = INT_MAX ; return ; } max_uv_tx_size = get_uv_tx_size_impl ( xd -> mi [ 0 ] -> mbmi . tx_size , bsize ) ; rd_pick_intra_sbuv_mode ( cpi , x , ctx , & rate_uv , & rate_uv_tokenonly , & dist_uv , & uv_skip , BLOCK_8X8 , max_uv_tx_size ) ; } if ( y_skip && uv_skip ) { <S2SV_StartBug> * returnrate = rate_y + rate_uv - rate_y_tokenonly - rate_uv_tokenonly + <S2SV_EndBug> vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 1 ) ; <S2SV_StartBug> * returndist = dist_y + dist_uv ; <S2SV_EndBug> <S2SV_StartBug> vp9_zero ( ctx -> tx_rd_diff ) ; <S2SV_EndBug> } else { int i ; * returnrate = rate_y + rate_uv + vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 0 ) ; * returndist = dist_y + dist_uv ; if ( cpi -> sf . tx_size_search_method == USE_FULL_RD ) for ( i = 0 ; i < TX_MODES ; i ++ ) { if ( tx_cache [ i ] < INT64_MAX && tx_cache [ cm -> tx_mode ] < INT64_MAX ) ctx -> tx_rd_diff [ i ] = tx_cache [ i ] - tx_cache [ cm -> tx_mode ] ; else ctx -> tx_rd_diff [ i ] = 0 ; } } ctx -> mic = * xd -> mi [ 0 ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * x , RD_COST * rd_cost , <S2SV_ModEnd> BLOCK_SIZE bsize , <S2SV_ModStart> -> e_mbd ; struct macroblockd_plane * const pd = xd -> plane ; <S2SV_ModStart> dist_uv = 0 <S2SV_ModEnd> ; TX_SIZE max_uv_tx_size <S2SV_ModStart> = INTRA_FRAME ; xd -> mi [ 0 ] -> mbmi . ref_frame [ 1 ] = NONE ; <S2SV_ModStart> , bsize , <S2SV_ModEnd> best_rd ) >= <S2SV_ModStart> best_rd ) { rd_cost -> rate <S2SV_ModEnd> = INT_MAX ; <S2SV_ModStart> ; return ; } } else { y_skip = 0 ; if ( rd_pick_intra_sub_8x8_y_mode ( cpi , x , & rate_y , & rate_y_tokenonly , & dist_y , best_rd ) >= best_rd ) { rd_cost -> rate = INT_MAX ; return ; } <S2SV_ModStart> tx_size , bsize , pd [ 1 ] . subsampling_x , pd [ 1 ] . subsampling_y <S2SV_ModStart> & uv_skip , MAX ( BLOCK_8X8 , bsize ) , <S2SV_ModEnd> max_uv_tx_size ) ; <S2SV_ModStart> max_uv_tx_size ) ; <S2SV_ModEnd> if ( y_skip <S2SV_ModStart> uv_skip ) { rd_cost -> rate <S2SV_ModEnd> = rate_y + <S2SV_ModStart> 1 ) ; rd_cost -> dist <S2SV_ModEnd> = dist_y + <S2SV_ModStart> + dist_uv ; } else { rd_cost -> rate = rate_y + rate_uv + vp9_cost_bit ( vp9_get_skip_prob ( cm , xd ) , 0 ) ; rd_cost -> dist = dist_y + dist_uv ; } ctx -> mic = * xd -> mi [ 0 ] ; ctx -> mbmi_ext = * x -> mbmi_ext ; rd_cost -> rdcost = RDCOST ( x -> rdmult , x -> rddiv , rd_cost -> rate , rd_cost -> dist ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 int verify_compat_iovec ( struct msghdr * kern_msg , struct iovec * kern_iov , struct sockaddr_storage * kern_address , int mode ) { int tot_len ; if ( kern_msg -> msg_namelen ) { if ( mode == VERIFY_READ ) { int err = move_addr_to_kernel ( kern_msg -> msg_name , kern_msg -> msg_namelen , kern_address ) ; if ( err < 0 ) return err ; } <S2SV_StartBug> kern_msg -> msg_name = kern_address ; <S2SV_EndBug> } else kern_msg -> msg_name = NULL ; tot_len = iov_from_user_compat_to_kern ( kern_iov , ( struct compat_iovec __user * ) kern_msg -> msg_iov , kern_msg -> msg_iovlen ) ; if ( tot_len >= 0 ) kern_msg -> msg_iov = kern_iov ; return tot_len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } if ( kern_msg -> msg_name )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16643\n\n```\nCWE-20 static Image * ReadCALSImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { char filename [ MagickPathExtent ] , header [ MagickPathExtent ] , message [ MagickPathExtent ] ; FILE * file ; Image * image ; ImageInfo * read_info ; int c , unique_file ; MagickBooleanType status ; register ssize_t i ; unsigned long density , direction , height , orientation , pel_path , type , width ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) memset ( header , 0 , sizeof ( header ) ) ; density = 0 ; direction = 0 ; orientation = 1 ; pel_path = 0 ; type = 1 ; width = 0 ; height = 0 ; for ( i = 0 ; i < 16 ; i ++ ) { if ( ReadBlob ( image , 128 , ( unsigned char * ) header ) != 128 ) break ; switch ( * header ) { case 'R' : case 'r' : { if ( LocaleNCompare ( header , \"rdensty:\" , 8 ) == 0 ) { ( void ) sscanf ( header + 8 , \"%lu\" , & density ) ; break ; } if ( LocaleNCompare ( header , \"rpelcnt:\" , 8 ) == 0 ) { ( void ) sscanf ( header + 8 , \"%lu,%lu\" , & width , & height ) ; break ; } if ( LocaleNCompare ( header , \"rorient:\" , 8 ) == 0 ) { ( void ) sscanf ( header + 8 , \"%lu,%lu\" , & pel_path , & direction ) ; if ( pel_path == 90 ) orientation = 5 ; else if ( pel_path == 180 ) orientation = 3 ; else if ( pel_path == 270 ) orientation = 7 ; if ( direction == 90 ) orientation ++ ; break ; } if ( LocaleNCompare ( header , \"rtype:\" , 6 ) == 0 ) { ( void ) sscanf ( header + 6 , \"%lu\" , & type ) ; break ; } break ; } } } file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( ( unique_file == - 1 ) || ( file == ( FILE * ) NULL ) ) ThrowImageException ( FileOpenError , \"UnableToCreateTemporaryFile\" ) ; while ( ( c = ReadBlobByte ( image ) ) != EOF ) <S2SV_StartBug> ( void ) fputc ( c , file ) ; <S2SV_EndBug> ( void ) fclose ( file ) ; ( void ) CloseBlob ( image ) ; image = DestroyImage ( image ) ; read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; ( void ) FormatLocaleString ( read_info -> filename , MagickPathExtent , \"group4:%s\" , filename ) ; ( void ) FormatLocaleString ( message , MagickPathExtent , \"%lux%lu\" , width , height ) ; ( void ) CloneString ( & read_info -> size , message ) ; ( void ) FormatLocaleString ( message , MagickPathExtent , \"%lu\" , density ) ; ( void ) CloneString ( & read_info -> density , message ) ; read_info -> orientation = ( OrientationType ) orientation ; image = ReadImage ( read_info , exception ) ; if ( image != ( Image * ) NULL ) { ( void ) CopyMagickString ( image -> filename , image_info -> filename , MagickPathExtent ) ; ( void ) CopyMagickString ( image -> magick_filename , image_info -> filename , MagickPathExtent ) ; ( void ) CopyMagickString ( image -> magick , \"CALS\" , MagickPathExtent ) ; } read_info = DestroyImageInfo ( read_info ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; return ( image ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != EOF ) if ( <S2SV_ModEnd> fputc ( c <S2SV_ModStart> , file ) != c ) break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4592\n\n```\nCWE-399 int __kvm_set_memory_region ( struct kvm * kvm , struct kvm_userspace_memory_region * mem , int user_alloc ) { int r ; gfn_t base_gfn ; unsigned long npages ; unsigned long i ; struct kvm_memory_slot * memslot ; struct kvm_memory_slot old , new ; struct kvm_memslots * slots , * old_memslots ; r = check_memory_region_flags ( mem ) ; if ( r ) goto out ; r = - EINVAL ; if ( mem -> memory_size & ( PAGE_SIZE - 1 ) ) goto out ; if ( mem -> guest_phys_addr & ( PAGE_SIZE - 1 ) ) goto out ; if ( user_alloc && ( ( mem -> userspace_addr & ( PAGE_SIZE - 1 ) ) || ! access_ok ( VERIFY_WRITE , ( void __user * ) ( unsigned long ) mem -> userspace_addr , mem -> memory_size ) ) ) goto out ; if ( mem -> slot >= KVM_MEM_SLOTS_NUM ) goto out ; if ( mem -> guest_phys_addr + mem -> memory_size < mem -> guest_phys_addr ) goto out ; memslot = id_to_memslot ( kvm -> memslots , mem -> slot ) ; base_gfn = mem -> guest_phys_addr >> PAGE_SHIFT ; npages = mem -> memory_size >> PAGE_SHIFT ; r = - EINVAL ; if ( npages > KVM_MEM_MAX_NR_PAGES ) goto out ; if ( ! npages ) mem -> flags &= ~ KVM_MEM_LOG_DIRTY_PAGES ; new = old = * memslot ; new . id = mem -> slot ; new . base_gfn = base_gfn ; new . npages = npages ; new . flags = mem -> flags ; r = - EINVAL ; if ( npages && old . npages && npages != old . npages ) goto out_free ; r = - EEXIST ; for ( i = 0 ; i < KVM_MEMORY_SLOTS ; ++ i ) { struct kvm_memory_slot * s = & kvm -> memslots -> memslots [ i ] ; if ( s == memslot || ! s -> npages ) continue ; if ( ! ( ( base_gfn + npages <= s -> base_gfn ) || ( base_gfn >= s -> base_gfn + s -> npages ) ) ) goto out_free ; } if ( ! ( new . flags & KVM_MEM_LOG_DIRTY_PAGES ) ) new . dirty_bitmap = NULL ; r = - ENOMEM ; if ( npages && ! old . npages ) { new . user_alloc = user_alloc ; new . userspace_addr = mem -> userspace_addr ; if ( kvm_arch_create_memslot ( & new , npages ) ) goto out_free ; } if ( ( new . flags & KVM_MEM_LOG_DIRTY_PAGES ) && ! new . dirty_bitmap ) { if ( kvm_create_dirty_bitmap ( & new ) < 0 ) goto out_free ; } <S2SV_StartBug> if ( ! npages ) { <S2SV_EndBug> struct kvm_memory_slot * slot ; r = - ENOMEM ; slots = kmemdup ( kvm -> memslots , sizeof ( struct kvm_memslots ) , GFP_KERNEL ) ; if ( ! slots ) goto out_free ; slot = id_to_memslot ( slots , mem -> slot ) ; slot -> flags |= KVM_MEMSLOT_INVALID ; update_memslots ( slots , NULL ) ; old_memslots = kvm -> memslots ; rcu_assign_pointer ( kvm -> memslots , slots ) ; synchronize_srcu_expedited ( & kvm -> srcu ) ; kvm_arch_flush_shadow_memslot ( kvm , slot ) ; kfree ( old_memslots ) ; } r = kvm_arch_prepare_memory_region ( kvm , & new , old , mem , user_alloc ) ; if ( r ) goto out_free ; if ( npages ) { r = kvm_iommu_map_pages ( kvm , & new ) ; if ( r ) goto out_free ; } else kvm_iommu_unmap_pages ( kvm , & old ) ; r = - ENOMEM ; slots = kmemdup ( kvm -> memslots , sizeof ( struct kvm_memslots ) , GFP_KERNEL ) ; if ( ! slots ) goto out_free ; if ( ! npages ) { new . dirty_bitmap = NULL ; memset ( & new . arch , 0 , sizeof ( new . arch ) ) ; } update_memslots ( slots , & new ) ; old_memslots = kvm -> memslots ; rcu_assign_pointer ( kvm -> memslots , slots ) ; synchronize_srcu_expedited ( & kvm -> srcu ) ; kvm_arch_commit_memory_region ( kvm , mem , old , user_alloc ) ; if ( npages && old . base_gfn != mem -> guest_phys_addr >> PAGE_SHIFT ) kvm_arch_flush_shadow_all ( kvm ) ; kvm_free_physmem_slot ( & old , & new ) ; kfree ( old_memslots ) ; return 0 ; out_free : kvm_free_physmem_slot ( & new , & old ) ; out : return r ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! npages || base_gfn != old . base_gfn\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9888\n\n```\nCWE-264 void * arm_dma_alloc ( struct device * dev , size_t size , dma_addr_t * handle , gfp_t gfp , struct dma_attrs * attrs ) { <S2SV_StartBug> pgprot_t prot = __get_dma_pgprot ( attrs , pgprot_kernel ) ; <S2SV_EndBug> void * memory ; if ( dma_alloc_from_coherent ( dev , size , handle , & memory ) ) return memory ; return __dma_alloc ( dev , size , handle , gfp , prot , false , __builtin_return_address ( 0 ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( attrs , PAGE_KERNEL <S2SV_ModEnd> ) ; void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static int pci_emul_mem_handler ( struct vmctx * ctx , int vcpu , int dir , uint64_t addr , int size , uint64_t * val , void * arg1 , long arg2 ) { struct pci_vdev * pdi = arg1 ; struct pci_vdev_ops * ops = pdi -> dev_ops ; uint64_t offset ; int bidx = ( int ) arg2 ; <S2SV_StartBug> assert ( bidx <= PCI_BARMAX ) ; <S2SV_EndBug> <S2SV_StartBug> assert ( pdi -> bar [ bidx ] . type == PCIBAR_MEM32 || <S2SV_EndBug> <S2SV_StartBug> pdi -> bar [ bidx ] . type == PCIBAR_MEM64 ) ; <S2SV_EndBug> assert ( addr >= pdi -> bar [ bidx ] . addr && addr + size <= pdi -> bar [ bidx ] . addr + pdi -> bar [ bidx ] . size ) ; offset = addr - pdi -> bar [ bidx ] . addr ; if ( dir == MEM_F_WRITE ) { if ( size == 8 ) { ( * ops -> vdev_barwrite ) ( ctx , vcpu , pdi , bidx , offset , 4 , * val & 0xffffffff ) ; ( * ops -> vdev_barwrite ) ( ctx , vcpu , pdi , bidx , offset + 4 , 4 , * val >> 32 ) ; } else { ( * ops -> vdev_barwrite ) ( ctx , vcpu , pdi , bidx , offset , size , bar_value ( size , * val ) ) ; } } else { if ( size == 8 ) { uint64_t val_lo , val_hi ; val_lo = ( * ops -> vdev_barread ) ( ctx , vcpu , pdi , bidx , offset , 4 ) ; val_lo = bar_value ( 4 , val_lo ) ; val_hi = ( * ops -> vdev_barread ) ( ctx , vcpu , pdi , bidx , offset + 4 , 4 ) ; * val = val_lo | ( val_hi << 32 ) ; } else { * val = ( * ops -> vdev_barread ) ( ctx , vcpu , pdi , bidx , offset , size ) ; * val = bar_value ( size , * val ) ; } } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) arg2 ; if ( addr + size > <S2SV_ModEnd> pdi -> bar <S2SV_ModStart> bidx ] . addr + <S2SV_ModEnd> pdi -> bar <S2SV_ModStart> bidx ] . size ) { printf ( \"%s,<S2SV_blank>Out<S2SV_blank>of<S2SV_blank>emulated<S2SV_blank>memory<S2SV_blank>range.\\\\n\" , __func__ ) ; return - ESRCH ; } <S2SV_ModEnd> offset = addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6353\n\n```\nCWE-415 static int sctp_wait_for_sndbuf ( struct sctp_association * asoc , long * timeo_p , size_t msg_len ) { struct sock * sk = asoc -> base . sk ; int err = 0 ; long current_timeo = * timeo_p ; DEFINE_WAIT ( wait ) ; pr_debug ( \"%s:<S2SV_blank>asoc:%p,<S2SV_blank>timeo:%ld,<S2SV_blank>msg_len:%zu\\\\n\" , __func__ , asoc , * timeo_p , msg_len ) ; sctp_association_hold ( asoc ) ; for ( ; ; ) { prepare_to_wait_exclusive ( & asoc -> wait , & wait , TASK_INTERRUPTIBLE ) ; if ( ! * timeo_p ) goto do_nonblock ; if ( sk -> sk_err || asoc -> state >= SCTP_STATE_SHUTDOWN_PENDING || asoc -> base . dead ) goto do_error ; if ( signal_pending ( current ) ) goto do_interrupted ; if ( msg_len <= sctp_wspace ( asoc ) ) break ; release_sock ( sk ) ; current_timeo = schedule_timeout ( current_timeo ) ; <S2SV_StartBug> if ( sk != asoc -> base . sk ) <S2SV_EndBug> goto do_error ; lock_sock ( sk ) ; * timeo_p = current_timeo ; } out : finish_wait ( & asoc -> wait , & wait ) ; sctp_association_put ( asoc ) ; return err ; do_error : err = - EPIPE ; goto out ; do_interrupted : err = sock_intr_errno ( * timeo_p ) ; goto out ; do_nonblock : err = - EAGAIN ; goto out ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_timeo ) ; <S2SV_ModEnd> lock_sock ( sk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadCUTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { Image * image , * palette ; ImageInfo * clone_info ; MagickBooleanType status ; MagickOffsetType offset ; size_t EncodedByte ; unsigned char RunCount , RunValue , RunCountMasked ; CUTHeader Header ; CUTPalHeader PalHeader ; ssize_t depth ; ssize_t i , j ; ssize_t ldblk ; unsigned char * BImgBuff = NULL , * ptrB ; PixelPacket * q ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } palette = NULL ; clone_info = NULL ; Header . Width = ReadBlobLSBShort ( image ) ; Header . Height = ReadBlobLSBShort ( image ) ; Header . Reserved = ReadBlobLSBShort ( image ) ; if ( Header . Width == 0 || Header . Height == 0 || Header . Reserved != 0 ) CUT_KO : ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; EncodedByte = ReadBlobLSBShort ( image ) ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; ldblk = 0 ; while ( ( int ) RunCountMasked != 0 ) { i = 1 ; if ( ( int ) RunCount < 0x80 ) i = ( ssize_t ) RunCountMasked ; offset = SeekBlob ( image , TellBlob ( image ) + i , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; EncodedByte -= i + 1 ; ldblk += ( ssize_t ) RunCountMasked ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) goto CUT_KO ; RunCountMasked = RunCount & 0x7F ; } if ( EncodedByte != 1 ) goto CUT_KO ; i = 0 ; if ( ldblk == ( int ) Header . Width ) i = 8 ; if ( 2 * ldblk == ( int ) Header . Width ) i = 4 ; if ( 8 * ldblk == ( int ) Header . Width ) i = 1 ; if ( i == 0 ) goto CUT_KO ; depth = i ; image -> columns = Header . Width ; image -> rows = Header . Height ; image -> depth = 8 ; image -> colors = ( size_t ) ( GetQuantumRange ( 1UL * i ) + 1 ) ; <S2SV_StartBug> if ( image_info -> ping ) goto Finish ; <S2SV_EndBug> if ( ( clone_info = CloneImageInfo ( image_info ) ) == NULL ) goto NoPalette ; i = ( ssize_t ) strlen ( clone_info -> filename ) ; j = i ; while ( -- i > 0 ) { if ( clone_info -> filename [ i ] == '.' ) { break ; } if ( clone_info -> filename [ i ] == '/' || clone_info -> filename [ i ] == '\\\\\\\\' || clone_info -> filename [ i ] == ':' ) { i = j ; break ; } } ( void ) CopyMagickString ( clone_info -> filename + i , \".PAL\" , ( size_t ) ( MaxTextExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { ( void ) CopyMagickString ( clone_info -> filename + i , \".pal\" , ( size_t ) ( MaxTextExtent - i ) ) ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info -> filename [ i ] = '\\\\0' ; if ( ( clone_info -> file = fopen_utf8 ( clone_info -> filename , \"rb\" ) ) == NULL ) { clone_info = DestroyImageInfo ( clone_info ) ; clone_info = NULL ; goto NoPalette ; } } } if ( ( palette = AcquireImage ( clone_info ) ) == NULL ) goto NoPalette ; status = OpenBlob ( clone_info , palette , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { ErasePalette : palette = DestroyImage ( palette ) ; palette = NULL ; goto NoPalette ; } if ( palette != NULL ) { ( void ) ReadBlob ( palette , 2 , ( unsigned char * ) PalHeader . FileId ) ; if ( strncmp ( PalHeader . FileId , \"AH\" , 2 ) != 0 ) goto ErasePalette ; PalHeader . Version = ReadBlobLSBShort ( palette ) ; PalHeader . Size = ReadBlobLSBShort ( palette ) ; PalHeader . FileType = ( char ) ReadBlobByte ( palette ) ; PalHeader . SubType = ( char ) ReadBlobByte ( palette ) ; PalHeader . BoardID = ReadBlobLSBShort ( palette ) ; PalHeader . GraphicsMode = ReadBlobLSBShort ( palette ) ; PalHeader . MaxIndex = ReadBlobLSBShort ( palette ) ; PalHeader . MaxRed = ReadBlobLSBShort ( palette ) ; PalHeader . MaxGreen = ReadBlobLSBShort ( palette ) ; PalHeader . MaxBlue = ReadBlobLSBShort ( palette ) ; ( void ) ReadBlob ( palette , 20 , ( unsigned char * ) PalHeader . PaletteId ) ; if ( PalHeader . MaxIndex < 1 ) goto ErasePalette ; image -> colors = PalHeader . MaxIndex + 1 ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) goto NoMemory ; if ( PalHeader . MaxRed == 0 ) PalHeader . MaxRed = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxGreen == 0 ) PalHeader . MaxGreen = ( unsigned int ) QuantumRange ; if ( PalHeader . MaxBlue == 0 ) PalHeader . MaxBlue = ( unsigned int ) QuantumRange ; for ( i = 0 ; i <= ( int ) PalHeader . MaxIndex ; i ++ ) { j = ( ssize_t ) TellBlob ( palette ) ; if ( ( j % 512 ) > 512 - 6 ) { j = ( ( j / 512 ) + 1 ) * 512 ; offset = SeekBlob ( palette , j , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } image -> colormap [ i ] . red = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxRed ) { image -> colormap [ i ] . red = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . red * QuantumRange + ( PalHeader . MaxRed >> 1 ) ) / PalHeader . MaxRed ) ; } image -> colormap [ i ] . green = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxGreen ) { image -> colormap [ i ] . green = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . green * QuantumRange + ( PalHeader . MaxGreen >> 1 ) ) / PalHeader . MaxGreen ) ; } image -> colormap [ i ] . blue = ( Quantum ) ReadBlobLSBShort ( palette ) ; if ( QuantumRange != ( Quantum ) PalHeader . MaxBlue ) { image -> colormap [ i ] . blue = ClampToQuantum ( ( ( double ) image -> colormap [ i ] . blue * QuantumRange + ( PalHeader . MaxBlue >> 1 ) ) / PalHeader . MaxBlue ) ; } } } NoPalette : if ( palette == NULL ) { image -> colors = 256 ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) { NoMemory : ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ScaleCharToQuantum ( ( unsigned char ) i ) ; } } BImgBuff = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ldblk , sizeof ( * BImgBuff ) ) ; if ( BImgBuff == NULL ) goto NoMemory ; offset = SeekBlob ( image , 6 , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; for ( i = 0 ; i < ( int ) Header . Height ; i ++ ) { EncodedByte = ReadBlobLSBShort ( image ) ; ptrB = BImgBuff ; j = ldblk ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; while ( ( int ) RunCountMasked != 0 ) { if ( ( ssize_t ) RunCountMasked > j ) { RunCountMasked = ( unsigned char ) j ; if ( j == 0 ) { break ; } } if ( ( int ) RunCount > 0x80 ) { RunValue = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) ResetMagickMemory ( ptrB , ( int ) RunValue , ( size_t ) RunCountMasked ) ; } else { ( void ) ReadBlob ( image , ( size_t ) RunCountMasked , ptrB ) ; } ptrB += ( int ) RunCountMasked ; j -= ( int ) RunCountMasked ; if ( EOFBlob ( image ) != MagickFalse ) goto Finish ; RunCount = ( unsigned char ) ReadBlobByte ( image ) ; RunCountMasked = RunCount & 0x7F ; } InsertRow ( depth , BImgBuff , i , image ) ; } ( void ) SyncImage ( image ) ; if ( palette == NULL ) { if ( ( image -> storage_class == PseudoClass ) && ( IsGrayImage ( image , & image -> exception ) != MagickFalse ) ) { if ( GetCutColors ( image ) == 2 ) { for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { register Quantum sample ; sample = ScaleCharToQuantum ( ( unsigned char ) i ) ; if ( image -> colormap [ i ] . red != sample ) goto Finish ; if ( image -> colormap [ i ] . green != sample ) goto Finish ; if ( image -> colormap [ i ] . blue != sample ) goto Finish ; } image -> colormap [ 1 ] . red = image -> colormap [ 1 ] . green = image -> colormap [ 1 ] . blue = QuantumRange ; for ( i = 0 ; i < ( ssize_t ) image -> rows ; i ++ ) { q = QueueAuthenticPixels ( image , 0 , i , image -> columns , 1 , exception ) ; for ( j = 0 ; j < ( ssize_t ) image -> columns ; j ++ ) { if ( GetPixelRed ( q ) == ScaleCharToQuantum ( 1 ) ) { SetPixelRed ( q , QuantumRange ) ; SetPixelGreen ( q , QuantumRange ) ; SetPixelBlue ( q , QuantumRange ) ; } q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) goto Finish ; } } } } Finish : if ( BImgBuff != NULL ) BImgBuff = ( unsigned char * ) RelinquishMagickMemory ( BImgBuff ) ; if ( palette != NULL ) palette = DestroyImage ( palette ) ; if ( clone_info != NULL ) clone_info = DestroyImageInfo ( clone_info ) ; if ( EOFBlob ( image ) != MagickFalse ) ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> image_info -> ping != MagickFalse <S2SV_ModStart> goto Finish ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9540\n\n```\nCWE-119 DECLAREreadFunc ( readContigTilesIntoBuffer ) { int status = 1 ; tsize_t tilesize = TIFFTileSize ( in ) ; tdata_t tilebuf ; uint32 imagew = TIFFScanlineSize ( in ) ; uint32 tilew = TIFFTileRowSize ( in ) ; int iskew = imagew - tilew ; uint8 * bufp = ( uint8 * ) buf ; uint32 tw , tl ; uint32 row ; ( void ) spp ; tilebuf = _TIFFmalloc ( tilesize ) ; if ( tilebuf == 0 ) return 0 ; _TIFFmemset ( tilebuf , 0 , tilesize ) ; ( void ) TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tw ) ; ( void ) TIFFGetField ( in , TIFFTAG_TILELENGTH , & tl ) ; for ( row = 0 ; row < imagelength ; row += tl ) { uint32 nrow = ( row + tl > imagelength ) ? imagelength - row : tl ; uint32 colb = 0 ; uint32 col ; <S2SV_StartBug> for ( col = 0 ; col < imagewidth ; col += tw ) { <S2SV_EndBug> if ( TIFFReadTile ( in , tilebuf , col , row , 0 , 0 ) < 0 && ! ignore ) { TIFFError ( TIFFFileName ( in ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>read<S2SV_blank>tile<S2SV_blank>at<S2SV_blank>%lu<S2SV_blank>%lu\" , ( unsigned long ) col , ( unsigned long ) row ) ; status = 0 ; goto done ; } if ( colb + tilew > imagew ) { uint32 width = imagew - colb ; uint32 oskew = tilew - width ; cpStripToTile ( bufp + colb , tilebuf , nrow , width , oskew + iskew , oskew ) ; } else cpStripToTile ( bufp + colb , tilebuf , nrow , tilew , iskew , 0 ) ; colb += tilew ; } bufp += imagew * nrow ; } done : _TIFFfree ( tilebuf ) ; return status ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> col < imagewidth && colb < imagew\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10049\n\n```\nCWE-119 static Image * ReadRLEImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { # define SkipLinesOp 0x01 # define SetColorOp 0x02 # define SkipPixelsOp 0x03 # define ByteDataOp 0x05 # define RunDataOp 0x06 # define EOFOp 0x07 char magick [ 12 ] ; Image * image ; int opcode , operand , status ; MagickStatusType flags ; MagickSizeType number_pixels ; MemoryInfo * pixel_info ; Quantum index ; register ssize_t x ; register Quantum * q ; register ssize_t i ; register unsigned char * p ; size_t bits_per_pixel , map_length , number_colormaps , number_planes , number_planes_filled , one , offset , pixel_info_length ; ssize_t count , y ; unsigned char background_color [ 256 ] , * colormap , pixel , plane , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 2 ) || ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) != 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; do { image -> page . x = ReadBlobLSBShort ( image ) ; image -> page . y = ReadBlobLSBShort ( image ) ; image -> columns = ReadBlobLSBShort ( image ) ; image -> rows = ReadBlobLSBShort ( image ) ; flags = ( MagickStatusType ) ReadBlobByte ( image ) ; image -> alpha_trait = flags & 0x04 ? BlendPixelTrait : UndefinedPixelTrait ; number_planes = ( size_t ) ReadBlobByte ( image ) ; bits_per_pixel = ( size_t ) ReadBlobByte ( image ) ; number_colormaps = ( size_t ) ReadBlobByte ( image ) ; map_length = ( unsigned char ) ReadBlobByte ( image ) ; if ( map_length >= 64 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; one = 1 ; map_length = one << map_length ; if ( ( number_planes == 0 ) || ( number_planes == 2 ) || ( ( flags & 0x04 ) && ( number_colormaps > 254 ) ) || ( bits_per_pixel != 8 ) || ( image -> columns == 0 ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( flags & 0x02 ) { for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) background_color [ i ] = 0 ; ( void ) ReadBlobByte ( image ) ; } else { p = background_color ; for ( i = 0 ; i < ( ssize_t ) number_planes ; i ++ ) * p ++ = ( unsigned char ) ReadBlobByte ( image ) ; } if ( ( number_planes & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } colormap = ( unsigned char * ) NULL ; if ( number_colormaps != 0 ) { colormap = ( unsigned char * ) AcquireQuantumMemory ( number_colormaps , 3 * map_length * sizeof ( * colormap ) ) ; if ( colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; for ( i = 0 ; i < ( ssize_t ) number_colormaps ; i ++ ) for ( x = 0 ; x < ( ssize_t ) map_length ; x ++ ) * p ++ = ( unsigned char ) ScaleShortToQuantum ( ReadBlobLSBShort ( image ) ) ; } if ( ( flags & 0x08 ) != 0 ) { char * comment ; size_t length ; length = ReadBlobLSBShort ( image ) ; if ( length != 0 ) { comment = ( char * ) AcquireQuantumMemory ( length , sizeof ( * comment ) ) ; if ( comment == ( char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; count = ReadBlob ( image , length - 1 , ( unsigned char * ) comment ) ; comment [ length - 1 ] = '\\\\0' ; ( void ) SetImageProperty ( image , \"comment\" , comment , exception ) ; comment = DestroyString ( comment ) ; if ( ( length & 0x01 ) == 0 ) ( void ) ReadBlobByte ( image ) ; } } if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) number_planes ++ ; number_pixels = ( MagickSizeType ) image -> columns * image -> rows ; number_planes_filled = ( number_planes % 2 == 0 ) ? number_planes : number_planes + 1 ; if ( ( number_pixels * number_planes_filled ) != ( size_t ) ( number_pixels * number_planes_filled ) ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixel_info = AcquireVirtualMemory ( image -> columns , image -> rows * <S2SV_StartBug> number_planes_filled * sizeof ( * pixels ) ) ; <S2SV_EndBug> if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; <S2SV_StartBug> pixel_info_length = image -> columns * image -> rows * number_planes_filled ; <S2SV_EndBug> pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( flags & 0x01 ) && ! ( flags & 0x02 ) ) { ssize_t j ; p = pixels ; for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { if ( image -> alpha_trait == UndefinedPixelTrait ) for ( j = 0 ; j < ( ssize_t ) number_planes ; j ++ ) * p ++ = background_color [ j ] ; else { for ( j = 0 ; j < ( ssize_t ) ( number_planes - 1 ) ; j ++ ) * p ++ = background_color [ j ] ; * p ++ = 0 ; } } } plane = 0 ; x = 0 ; y = 0 ; opcode = ReadBlobByte ( image ) ; do { switch ( opcode & 0x3f ) { case SkipLinesOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; x = 0 ; y += operand ; break ; } case SetColorOp : { operand = ReadBlobByte ( image ) ; plane = ( unsigned char ) operand ; if ( plane == 255 ) plane = ( unsigned char ) ( number_planes - 1 ) ; x = 0 ; break ; } case SkipPixelsOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; x += operand ; break ; } case ByteDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { pixel = ( unsigned char ) ReadBlobByte ( image ) ; if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } if ( operand & 0x01 ) ( void ) ReadBlobByte ( image ) ; x += operand ; break ; } case RunDataOp : { operand = ReadBlobByte ( image ) ; if ( opcode & 0x40 ) operand = ReadBlobLSBSignedShort ( image ) ; pixel = ( unsigned char ) ReadBlobByte ( image ) ; ( void ) ReadBlobByte ( image ) ; offset = ( ( image -> rows - y - 1 ) * image -> columns * number_planes ) + x * number_planes + plane ; operand ++ ; if ( offset + ( ( size_t ) operand * number_planes ) > pixel_info_length ) { if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } p = pixels + offset ; for ( i = 0 ; i < ( ssize_t ) operand ; i ++ ) { if ( ( y < ( ssize_t ) image -> rows ) && ( ( x + i ) < ( ssize_t ) image -> columns ) ) * p = pixel ; p += number_planes ; } x += operand ; break ; } default : break ; } opcode = ReadBlobByte ( image ) ; } while ( ( ( opcode & 0x3f ) != EOFOp ) && ( opcode != EOF ) ) ; if ( number_colormaps != 0 ) { MagickStatusType mask ; mask = ( MagickStatusType ) ( map_length - 1 ) ; p = pixels ; x = ( ssize_t ) number_planes ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) { ValidateColormapValue ( image , * p & mask , & index , exception ) ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } else if ( ( number_planes >= 3 ) && ( number_colormaps >= 3 ) ) for ( i = 0 ; i < ( ssize_t ) number_pixels ; i ++ ) for ( x = 0 ; x < ( ssize_t ) number_planes ; x ++ ) { ValidateColormapValue ( image , ( size_t ) ( x * map_length + ( * p & mask ) ) , & index , exception ) ; * p = colormap [ ( ssize_t ) index ] ; p ++ ; } if ( ( i < ( ssize_t ) number_pixels ) || ( x < ( ssize_t ) number_planes ) ) { colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToReadImageData\" ) ; } } if ( number_planes >= 3 ) { p = pixels ; for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelRed ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelGreen ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; SetPixelBlue ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; if ( image -> alpha_trait != UndefinedPixelTrait ) SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } } else { if ( number_colormaps == 0 ) map_length = 256 ; if ( AcquireImageColormap ( image , map_length , exception ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; p = colormap ; if ( number_colormaps == 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( ( unsigned char ) i ) ; } else if ( number_colormaps > 1 ) for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . red = ( MagickRealType ) ScaleCharToQuantum ( * p ) ; image -> colormap [ i ] . green = ( MagickRealType ) ScaleCharToQuantum ( * ( p + map_length ) ) ; image -> colormap [ i ] . blue = ( MagickRealType ) ScaleCharToQuantum ( * ( p + map_length * 2 ) ) ; p ++ ; } p = pixels ; if ( image -> alpha_trait == UndefinedPixelTrait ) { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelIndex ( image , * p ++ , q ) ; q += GetPixelChannels ( image ) ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image , exception ) ; } else { for ( y = 0 ; y < ( ssize_t ) image -> rows ; y ++ ) { q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelRed ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . red ) , q ) ; ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelGreen ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . green ) , q ) ; ValidateColormapValue ( image , ( ssize_t ) * p ++ , & index , exception ) ; SetPixelBlue ( image , ClampToQuantum ( image -> colormap [ ( ssize_t ) index ] . blue ) , q ) ; SetPixelAlpha ( image , ScaleCharToQuantum ( * p ++ ) , q ) ; q += GetPixelChannels ( image ) ; } if ( x < ( ssize_t ) image -> columns ) break ; if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , image -> rows ) ; if ( status == MagickFalse ) break ; } } image -> colormap = ( PixelInfo * ) RelinquishMagickMemory ( image -> colormap ) ; image -> storage_class = DirectClass ; image -> colors = 0 ; } } if ( number_colormaps != 0 ) colormap = ( unsigned char * ) RelinquishMagickMemory ( colormap ) ; pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; ( void ) ReadBlobByte ( image ) ; count = ReadBlob ( image , 2 , ( unsigned char * ) magick ) ; if ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) { AcquireNextImage ( image_info , image , exception ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( ( count != 0 ) && ( memcmp ( magick , \"\\\\122\\\\314\" , 2 ) == 0 ) ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> rows * MagickMax ( number_planes_filled , 4 ) <S2SV_ModEnd> * sizeof ( <S2SV_ModStart> -> rows * MagickMax ( number_planes_filled , 4 ) <S2SV_ModEnd> ; pixels =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 int verify_iovec ( struct msghdr * m , struct iovec * iov , struct sockaddr_storage * address , int mode ) { int size , ct , err ; if ( m -> msg_namelen ) { if ( mode == VERIFY_READ ) { void __user * namep ; namep = ( void __user __force * ) m -> msg_name ; err = move_addr_to_kernel ( namep , m -> msg_namelen , address ) ; if ( err < 0 ) return err ; } <S2SV_StartBug> m -> msg_name = address ; <S2SV_EndBug> } else { m -> msg_name = NULL ; } size = m -> msg_iovlen * sizeof ( struct iovec ) ; if ( copy_from_user ( iov , ( void __user __force * ) m -> msg_iov , size ) ) return - EFAULT ; m -> msg_iov = iov ; err = 0 ; for ( ct = 0 ; ct < m -> msg_iovlen ; ct ++ ) { size_t len = iov [ ct ] . iov_len ; if ( len > INT_MAX - err ) { len = INT_MAX - err ; iov [ ct ] . iov_len = len ; } err += len ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } if ( m -> msg_name )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3302\n\n```\nCWE-362 static int smb_send_kvec ( struct TCP_Server_Info * server , struct kvec * iov , size_t n_vec , size_t * sent ) { int rc = 0 ; int i = 0 ; struct msghdr smb_msg ; unsigned int remaining ; size_t first_vec = 0 ; struct socket * ssocket = server -> ssocket ; <S2SV_StartBug> * sent = 0 ; <S2SV_EndBug> if ( ssocket == NULL ) return - ENOTSOCK ; smb_msg . msg_name = ( struct sockaddr * ) & server -> dstaddr ; smb_msg . msg_namelen = sizeof ( struct sockaddr ) ; smb_msg . msg_control = NULL ; smb_msg . msg_controllen = 0 ; if ( server -> noblocksnd ) smb_msg . msg_flags = MSG_DONTWAIT + MSG_NOSIGNAL ; else smb_msg . msg_flags = MSG_NOSIGNAL ; remaining = 0 ; for ( i = 0 ; i < n_vec ; i ++ ) remaining += iov [ i ] . iov_len ; i = 0 ; while ( remaining ) { rc = kernel_sendmsg ( ssocket , & smb_msg , & iov [ first_vec ] , n_vec - first_vec , remaining ) ; if ( rc == - ENOSPC || rc == - EAGAIN ) { WARN_ON_ONCE ( rc == - ENOSPC ) ; i ++ ; if ( i >= 14 || ( ! server -> noblocksnd && ( i > 2 ) ) ) { cERROR ( 1 , \"sends<S2SV_blank>on<S2SV_blank>sock<S2SV_blank>%p<S2SV_blank>stuck<S2SV_blank>for<S2SV_blank>15<S2SV_blank>\" \"seconds\" , ssocket ) ; rc = - EAGAIN ; break ; } msleep ( 1 << i ) ; continue ; } if ( rc < 0 ) break ; * sent += rc ; if ( rc == remaining ) { remaining = 0 ; break ; } if ( rc > remaining ) { cERROR ( 1 , \"sent<S2SV_blank>%d<S2SV_blank>requested<S2SV_blank>%d\" , rc , remaining ) ; break ; } if ( rc == 0 ) { cERROR ( 1 , \"tcp<S2SV_blank>sent<S2SV_blank>no<S2SV_blank>data\" ) ; msleep ( 500 ) ; continue ; } remaining -= rc ; for ( i = first_vec ; i < n_vec ; i ++ ) { if ( iov [ i ] . iov_len ) { if ( rc > iov [ i ] . iov_len ) { rc -= iov [ i ] . iov_len ; iov [ i ] . iov_len = 0 ; } else { iov [ i ] . iov_base += rc ; iov [ i ] . iov_len -= rc ; first_vec = i ; break ; } } } i = 0 ; rc = 0 ; } return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sent = 0 <S2SV_ModEnd> ; smb_msg .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static int parsestr ( struct compiling * c , const node * n , int * bytesmode , int * rawmode , PyObject * * result , const char * * fstr , Py_ssize_t * fstrlen ) { size_t len ; const char * s = STR ( n ) ; int quote = Py_CHARMASK ( * s ) ; int fmode = 0 ; * bytesmode = 0 ; * rawmode = 0 ; * result = NULL ; * fstr = NULL ; if ( Py_ISALPHA ( quote ) ) { while ( ! * bytesmode || ! * rawmode ) { if ( quote == 'b' || quote == 'B' ) { quote = * ++ s ; * bytesmode = 1 ; } else if ( quote == 'u' || quote == 'U' ) { quote = * ++ s ; } else if ( quote == 'r' || quote == 'R' ) { quote = * ++ s ; * rawmode = 1 ; } else if ( quote == 'f' || quote == 'F' ) { quote = * ++ s ; fmode = 1 ; } else { break ; } } } if ( fmode && * bytesmode ) { PyErr_BadInternalCall ( ) ; return - 1 ; } if ( quote != '\\\\'' && quote != \\'\\\\\"\\' ) { PyErr_BadInternalCall ( ) ; return - 1 ; } s ++ ; len = strlen ( s ) ; if ( len > INT_MAX ) { PyErr_SetString ( PyExc_OverflowError , \"string<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>is<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } if ( s [ -- len ] != quote ) { PyErr_BadInternalCall ( ) ; return - 1 ; } if ( len >= 4 && s [ 0 ] == quote && s [ 1 ] == quote ) { s += 2 ; len -= 2 ; if ( s [ -- len ] != quote || s [ -- len ] != quote ) { PyErr_BadInternalCall ( ) ; return - 1 ; } } if ( fmode ) { * fstr = s ; * fstrlen = len ; return 0 ; } * rawmode = * rawmode || strchr ( s , '\\\\\\\\' ) == NULL ; if ( * bytesmode ) { const char * ch ; for ( ch = s ; * ch ; ch ++ ) { if ( Py_CHARMASK ( * ch ) >= 0x80 ) { ast_error ( c , n , \"bytes<S2SV_blank>can<S2SV_blank>only<S2SV_blank>contain<S2SV_blank>ASCII<S2SV_blank>\" \"literal<S2SV_blank>characters.\" ) ; return - 1 ; } } if ( * rawmode ) * result = PyBytes_FromStringAndSize ( s , len ) ; else * result = decode_bytes_with_escapes ( c , n , s , len ) ; } else { if ( * rawmode ) * result = PyUnicode_DecodeUTF8Stateful ( s , len , NULL , NULL ) ; else * result = decode_unicode_with_escapes ( c , n , s , len ) ; } return * result == NULL ? - 1 : 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-2739\n\n```\nCWE-20 static int cma_req_handler ( struct ib_cm_id * cm_id , struct ib_cm_event * ib_event ) { struct rdma_id_private * listen_id , * conn_id ; struct rdma_cm_event event ; int offset , ret ; <S2SV_StartBug> u8 smac [ ETH_ALEN ] ; <S2SV_EndBug> u8 alt_smac [ ETH_ALEN ] ; u8 * psmac = smac ; u8 * palt_smac = alt_smac ; int is_iboe = ( ( rdma_node_get_transport ( cm_id -> device -> node_type ) == RDMA_TRANSPORT_IB ) && ( rdma_port_get_link_layer ( cm_id -> device , ib_event -> param . req_rcvd . port ) == IB_LINK_LAYER_ETHERNET ) ) ; listen_id = cm_id -> context ; if ( ! cma_check_req_qp_type ( & listen_id -> id , ib_event ) ) return - EINVAL ; if ( cma_disable_callback ( listen_id , RDMA_CM_LISTEN ) ) return - ECONNABORTED ; memset ( & event , 0 , sizeof event ) ; offset = cma_user_data_offset ( listen_id ) ; event . event = RDMA_CM_EVENT_CONNECT_REQUEST ; if ( ib_event -> event == IB_CM_SIDR_REQ_RECEIVED ) { conn_id = cma_new_udp_id ( & listen_id -> id , ib_event ) ; event . param . ud . private_data = ib_event -> private_data + offset ; event . param . ud . private_data_len = IB_CM_SIDR_REQ_PRIVATE_DATA_SIZE - offset ; } else { conn_id = cma_new_conn_id ( & listen_id -> id , ib_event ) ; cma_set_req_event_data ( & event , & ib_event -> param . req_rcvd , ib_event -> private_data , offset ) ; } if ( ! conn_id ) { ret = - ENOMEM ; goto err1 ; } mutex_lock_nested ( & conn_id -> handler_mutex , SINGLE_DEPTH_NESTING ) ; ret = cma_acquire_dev ( conn_id , listen_id ) ; if ( ret ) goto err2 ; conn_id -> cm_id . ib = cm_id ; cm_id -> context = conn_id ; cm_id -> cm_handler = cma_ib_handler ; atomic_inc ( & conn_id -> refcount ) ; ret = conn_id -> id . event_handler ( & conn_id -> id , & event ) ; if ( ret ) goto err3 ; <S2SV_StartBug> if ( is_iboe ) { <S2SV_EndBug> if ( ib_event -> param . req_rcvd . primary_path != NULL ) rdma_addr_find_smac_by_sgid ( & ib_event -> param . req_rcvd . primary_path -> sgid , psmac , NULL ) ; else psmac = NULL ; if ( ib_event -> param . req_rcvd . alternate_path != NULL ) rdma_addr_find_smac_by_sgid ( & ib_event -> param . req_rcvd . alternate_path -> sgid , palt_smac , NULL ) ; else palt_smac = NULL ; } <S2SV_StartBug> mutex_lock ( & lock ) ; <S2SV_EndBug> if ( is_iboe ) ib_update_cm_av ( cm_id , psmac , palt_smac ) ; if ( cma_comp ( conn_id , RDMA_CM_CONNECT ) && ( conn_id -> id . qp_type != IB_QPT_UD ) ) ib_send_cm_mra ( cm_id , CMA_CM_MRA_SETTING , NULL , 0 ) ; mutex_unlock ( & lock ) ; mutex_unlock ( & conn_id -> handler_mutex ) ; mutex_unlock ( & listen_id -> handler_mutex ) ; cma_deref_id ( conn_id ) ; return 0 ; err3 : cma_deref_id ( conn_id ) ; conn_id -> cm_id . ib = NULL ; err2 : cma_exch ( conn_id , RDMA_CM_DESTROYING ) ; mutex_unlock ( & conn_id -> handler_mutex ) ; err1 : mutex_unlock ( & listen_id -> handler_mutex ) ; if ( conn_id ) rdma_destroy_id ( & conn_id -> id ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , ret ; <S2SV_ModEnd> listen_id = cm_id <S2SV_ModStart> goto err3 ; <S2SV_ModEnd> mutex_lock ( & <S2SV_ModStart> ( & lock <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 BOOL transport_accept_nla ( rdpTransport * transport ) { freerdp * instance ; rdpSettings * settings ; if ( transport -> TlsIn == NULL ) transport -> TlsIn = tls_new ( transport -> settings ) ; if ( transport -> TlsOut == NULL ) transport -> TlsOut = transport -> TlsIn ; transport -> layer = TRANSPORT_LAYER_TLS ; transport -> TlsIn -> sockfd = transport -> TcpIn -> sockfd ; if ( tls_accept ( transport -> TlsIn , transport -> settings -> CertificateFile , transport -> settings -> PrivateKeyFile ) != TRUE ) return FALSE ; if ( transport -> settings -> Authentication != TRUE ) return TRUE ; settings = transport -> settings ; instance = ( freerdp * ) settings -> instance ; if ( transport -> credssp == NULL ) transport -> credssp = credssp_new ( instance , transport , settings ) ; if ( credssp_authenticate ( transport -> credssp ) < 0 ) { fprintf ( stderr , \"client<S2SV_blank>authentication<S2SV_blank>failure\\\\n\" ) ; credssp_free ( transport -> credssp ) ; <S2SV_StartBug> return FALSE ; <S2SV_EndBug> } return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> credssp ) ; transport -> credssp = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 <S2SV_StartBug> static int t220_frontend_attach ( struct dvb_usb_adapter * d ) <S2SV_EndBug> { u8 obuf [ 3 ] = { 0xe , 0x87 , 0 } ; u8 ibuf [ ] = { 0 } ; <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x86 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x80 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> msleep ( 50 ) ; <S2SV_EndBug> obuf [ 0 ] = 0xe ; obuf [ 1 ] = 0x80 ; obuf [ 2 ] = 1 ; <S2SV_StartBug> if ( dvb_usb_generic_rw ( d -> dev , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> <S2SV_StartBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_EndBug> obuf [ 0 ] = 0x51 ; if ( dvb_usb_generic_rw ( d -> dev , obuf , 1 , ibuf , 1 , 0 ) < 0 ) err ( \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> d -> fe_adap [ 0 ] . fe = dvb_attach ( cxd2820r_attach , & cxd2820r_config , <S2SV_EndBug> <S2SV_StartBug> & d -> dev -> i2c_adap , NULL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( d -> fe_adap [ 0 ] . fe != NULL ) { <S2SV_EndBug> <S2SV_StartBug> if ( dvb_attach ( tda18271_attach , d -> fe_adap [ 0 ] . fe , 0x60 , <S2SV_EndBug> <S2SV_StartBug> & d -> dev -> i2c_adap , & tda18271_config ) ) { <S2SV_EndBug> info ( \"Attached<S2SV_blank>TDA18271HD/CXD2820R!\" ) ; return 0 ; } } info ( \"Failed<S2SV_blank>to<S2SV_blank>attach<S2SV_blank>TDA18271HD/CXD2820R!\" ) ; return - EIO ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct dvb_usb_adapter * adap ) { struct dvb_usb_device * d = adap -> dev ; struct dw2102_state * state = d -> priv ; mutex_lock ( & d -> data_mutex ) ; state -> data [ 0 ] = 0xe ; state -> data [ 1 ] = 0x87 ; state -> data [ 2 ] = 0x0 ; if ( dvb_usb_generic_rw ( d , state -> data , 3 , state -> data , 1 , 0 ) < 0 ) err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data [ 0 ] = 0xe ; state -> data [ 1 ] = 0x86 ; state -> data [ 2 ] = 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data [ 1 ] = 0x80 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> 2 ] = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; msleep ( 50 ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 0x80 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> 2 ] = 1 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data [ 0 ] = 0x51 <S2SV_ModEnd> ; if ( <S2SV_ModStart> dvb_usb_generic_rw ( d , state -> data , 1 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> ) err ( <S2SV_ModEnd> \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_ModStart> \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; mutex_unlock ( & d -> data_mutex ) ; adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> & d -> <S2SV_ModEnd> i2c_adap , NULL <S2SV_ModStart> ; if ( adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> ( tda18271_attach , adap <S2SV_ModEnd> -> fe_adap [ <S2SV_ModStart> , & d <S2SV_ModEnd> -> i2c_adap ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9754\n\n```\nCWE-190 int ring_buffer_resize ( struct ring_buffer * buffer , unsigned long size , int cpu_id ) { struct ring_buffer_per_cpu * cpu_buffer ; unsigned long nr_pages ; int cpu , err = 0 ; if ( ! buffer ) return size ; if ( cpu_id != RING_BUFFER_ALL_CPUS && ! cpumask_test_cpu ( cpu_id , buffer -> cpumask ) ) return size ; <S2SV_StartBug> size = DIV_ROUND_UP ( size , BUF_PAGE_SIZE ) ; <S2SV_EndBug> size *= BUF_PAGE_SIZE ; if ( size < BUF_PAGE_SIZE * 2 ) size = BUF_PAGE_SIZE * 2 ; nr_pages = DIV_ROUND_UP ( size , BUF_PAGE_SIZE ) ; if ( atomic_read ( & buffer -> resize_disabled ) ) return - EBUSY ; mutex_lock ( & buffer -> mutex ) ; if ( cpu_id == RING_BUFFER_ALL_CPUS ) { for_each_buffer_cpu ( buffer , cpu ) { cpu_buffer = buffer -> buffers [ cpu ] ; cpu_buffer -> nr_pages_to_update = nr_pages - cpu_buffer -> nr_pages ; if ( cpu_buffer -> nr_pages_to_update <= 0 ) continue ; INIT_LIST_HEAD ( & cpu_buffer -> new_pages ) ; if ( __rb_allocate_pages ( cpu_buffer -> nr_pages_to_update , & cpu_buffer -> new_pages , cpu ) ) { err = - ENOMEM ; goto out_err ; } } get_online_cpus ( ) ; for_each_buffer_cpu ( buffer , cpu ) { cpu_buffer = buffer -> buffers [ cpu ] ; if ( ! cpu_buffer -> nr_pages_to_update ) continue ; if ( ! cpu_online ( cpu ) ) { rb_update_pages ( cpu_buffer ) ; cpu_buffer -> nr_pages_to_update = 0 ; } else { schedule_work_on ( cpu , & cpu_buffer -> update_pages_work ) ; } } for_each_buffer_cpu ( buffer , cpu ) { cpu_buffer = buffer -> buffers [ cpu ] ; if ( ! cpu_buffer -> nr_pages_to_update ) continue ; if ( cpu_online ( cpu ) ) wait_for_completion ( & cpu_buffer -> update_done ) ; cpu_buffer -> nr_pages_to_update = 0 ; } put_online_cpus ( ) ; } else { if ( ! cpumask_test_cpu ( cpu_id , buffer -> cpumask ) ) goto out ; cpu_buffer = buffer -> buffers [ cpu_id ] ; if ( nr_pages == cpu_buffer -> nr_pages ) goto out ; cpu_buffer -> nr_pages_to_update = nr_pages - cpu_buffer -> nr_pages ; INIT_LIST_HEAD ( & cpu_buffer -> new_pages ) ; if ( cpu_buffer -> nr_pages_to_update > 0 && __rb_allocate_pages ( cpu_buffer -> nr_pages_to_update , & cpu_buffer -> new_pages , cpu_id ) ) { err = - ENOMEM ; goto out_err ; } get_online_cpus ( ) ; if ( ! cpu_online ( cpu_id ) ) rb_update_pages ( cpu_buffer ) ; else { schedule_work_on ( cpu_id , & cpu_buffer -> update_pages_work ) ; wait_for_completion ( & cpu_buffer -> update_done ) ; } cpu_buffer -> nr_pages_to_update = 0 ; put_online_cpus ( ) ; } out : if ( atomic_read ( & buffer -> record_disabled ) ) { atomic_inc ( & buffer -> record_disabled ) ; synchronize_sched ( ) ; for_each_buffer_cpu ( buffer , cpu ) { cpu_buffer = buffer -> buffers [ cpu ] ; rb_check_pages ( cpu_buffer ) ; } atomic_dec ( & buffer -> record_disabled ) ; } mutex_unlock ( & buffer -> mutex ) ; return size ; out_err : for_each_buffer_cpu ( buffer , cpu ) { struct buffer_page * bpage , * tmp ; cpu_buffer = buffer -> buffers [ cpu ] ; cpu_buffer -> nr_pages_to_update = 0 ; if ( list_empty ( & cpu_buffer -> new_pages ) ) continue ; list_for_each_entry_safe ( bpage , tmp , & cpu_buffer -> new_pages , list ) { list_del_init ( & bpage -> list ) ; free_buffer_page ( bpage ) ; } } mutex_unlock ( & buffer -> mutex ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return size ; nr_pages = DIV_ROUND_UP ( size , BUF_PAGE_SIZE ) ; if ( nr_pages < 2 ) nr_pages = 2 ; size = nr_pages * BUF_PAGE_SIZE <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> horAcc16 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { tmsize_t stride = PredictorState ( tif ) -> stride ; uint16 * wp = ( uint16 * ) cp0 ; tmsize_t wc = cc / 2 ; <S2SV_StartBug> assert ( ( cc % ( 2 * stride ) ) == 0 ) ; <S2SV_EndBug> if ( wc > stride ) { wc -= stride ; do { REPEAT4 ( stride , wp [ stride ] = ( uint16 ) ( ( ( unsigned int ) wp [ stride ] + ( unsigned int ) wp [ 0 ] ) & 0xffff ) ; wp ++ ) wc -= stride ; } while ( wc > 0 ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> horAcc16 ( TIFF <S2SV_ModStart> / 2 ; if <S2SV_ModEnd> ( ( cc <S2SV_ModStart> stride ) ) != 0 ) { TIFFErrorExt ( tif -> tif_clientdata , \"horAcc16\" , \"%s\" , \"cc%(2*stride))!=0\" ) ; return 0 ; } <S2SV_ModEnd> if ( wc <S2SV_ModStart> ) ; } return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4998\n\n```\nCWE-119 static inline int check_entry_size_and_hooks ( struct arpt_entry * e , struct xt_table_info * newinfo , const unsigned char * base , const unsigned char * limit , const unsigned int * hook_entries , const unsigned int * underflows , unsigned int valid_hooks ) { unsigned int h ; int err ; if ( ( unsigned long ) e % __alignof__ ( struct arpt_entry ) != 0 || <S2SV_StartBug> ( unsigned char * ) e + sizeof ( struct arpt_entry ) >= limit ) { <S2SV_EndBug> duprintf ( \"Bad<S2SV_blank>offset<S2SV_blank>%p\\\\n\" , e ) ; return - EINVAL ; } if ( e -> next_offset < sizeof ( struct arpt_entry ) + sizeof ( struct xt_entry_target ) ) { duprintf ( \"checking:<S2SV_blank>element<S2SV_blank>%p<S2SV_blank>size<S2SV_blank>%u\\\\n\" , e , e -> next_offset ) ; return - EINVAL ; } err = check_entry ( e ) ; if ( err ) return err ; for ( h = 0 ; h < NF_ARP_NUMHOOKS ; h ++ ) { if ( ! ( valid_hooks & ( 1 << h ) ) ) continue ; if ( ( unsigned char * ) e - base == hook_entries [ h ] ) newinfo -> hook_entry [ h ] = hook_entries [ h ] ; if ( ( unsigned char * ) e - base == underflows [ h ] ) { if ( ! check_underflow ( e ) ) { pr_err ( \"Underflows<S2SV_blank>must<S2SV_blank>be<S2SV_blank>unconditional<S2SV_blank>and<S2SV_blank>\" \"use<S2SV_blank>the<S2SV_blank>STANDARD<S2SV_blank>target<S2SV_blank>with<S2SV_blank>\" \"ACCEPT/DROP\\\\n\" ) ; return - EINVAL ; } newinfo -> underflow [ h ] = underflows [ h ] ; } } e -> counters = ( ( struct xt_counters ) { 0 , 0 } ) ; e -> comefrom = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> arpt_entry ) >= limit || ( unsigned char * ) e + e -> next_offset >\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4054\n\n```\nCWE-476 static bool check_client_passwd ( PgSocket * client , const char * passwd ) { char md5 [ MD5_PASSWD_LEN + 1 ] ; const char * correct ; PgUser * user = client -> auth_user ; <S2SV_StartBug> if ( ! * passwd || ! * user -> passwd ) <S2SV_EndBug> return false ; switch ( cf_auth_type ) { case AUTH_PLAIN : return strcmp ( user -> passwd , passwd ) == 0 ; case AUTH_CRYPT : correct = crypt ( user -> passwd , ( char * ) client -> tmp_login_salt ) ; return correct && strcmp ( correct , passwd ) == 0 ; case AUTH_MD5 : if ( strlen ( passwd ) != MD5_PASSWD_LEN ) return false ; if ( ! isMD5 ( user -> passwd ) ) pg_md5_encrypt ( user -> passwd , user -> name , strlen ( user -> name ) , user -> passwd ) ; pg_md5_encrypt ( user -> passwd + 3 , ( char * ) client -> tmp_login_salt , 4 , md5 ) ; return strcmp ( md5 , passwd ) == 0 ; } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( ! user ) { slog_error ( client , \"Password<S2SV_blank>packet<S2SV_blank>before<S2SV_blank>auth<S2SV_blank>packet?\" ) ; return false ; } if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20182\n\n```\nCWE-119 static void lspci_process ( STREAM s ) { unsigned int pkglen ; static char * rest = NULL ; <S2SV_StartBug> char * buf ; <S2SV_EndBug> pkglen = s -> end - s -> p ; buf = xmalloc ( pkglen + 1 ) ; STRNCPY ( buf , ( char * ) s -> p , pkglen + 1 ) ; str_handle_lines ( buf , & rest , lspci_process_line , NULL ) ; xfree ( buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * buf ; struct stream packet = * s ; if ( ! s_check ( s ) ) { rdp_protocol_error ( \"lspci_process(),<S2SV_blank>stream<S2SV_blank>is<S2SV_blank>in<S2SV_blank>unstable<S2SV_blank>state\" , & packet ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9540\n\n```\nCWE-119 DECLAREwriteFunc ( writeBufferToContigTiles ) { uint32 imagew = TIFFScanlineSize ( out ) ; uint32 tilew = TIFFTileRowSize ( out ) ; int iskew = imagew - tilew ; tsize_t tilesize = TIFFTileSize ( out ) ; tdata_t obuf ; uint8 * bufp = ( uint8 * ) buf ; uint32 tl , tw ; uint32 row ; ( void ) spp ; obuf = _TIFFmalloc ( TIFFTileSize ( out ) ) ; if ( obuf == NULL ) return 0 ; _TIFFmemset ( obuf , 0 , tilesize ) ; ( void ) TIFFGetField ( out , TIFFTAG_TILELENGTH , & tl ) ; ( void ) TIFFGetField ( out , TIFFTAG_TILEWIDTH , & tw ) ; for ( row = 0 ; row < imagelength ; row += tilelength ) { uint32 nrow = ( row + tl > imagelength ) ? imagelength - row : tl ; uint32 colb = 0 ; uint32 col ; <S2SV_StartBug> for ( col = 0 ; col < imagewidth ; col += tw ) { <S2SV_EndBug> if ( colb + tilew > imagew ) { uint32 width = imagew - colb ; int oskew = tilew - width ; cpStripToTile ( obuf , bufp + colb , nrow , width , oskew , oskew + iskew ) ; } else cpStripToTile ( obuf , bufp + colb , nrow , tilew , 0 , iskew ) ; if ( TIFFWriteTile ( out , obuf , col , row , 0 , 0 ) < 0 ) { TIFFError ( TIFFFileName ( out ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>write<S2SV_blank>tile<S2SV_blank>at<S2SV_blank>%lu<S2SV_blank>%lu\" , ( unsigned long ) col , ( unsigned long ) row ) ; _TIFFfree ( obuf ) ; return 0 ; } colb += tilew ; } bufp += nrow * imagew ; } _TIFFfree ( obuf ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> col < imagewidth && colb < imagew\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void close_output_file ( struct stream_state * stream , unsigned int fourcc ) { const struct vpx_codec_enc_cfg * const cfg = & stream -> config . cfg ; if ( cfg -> g_pass == VPX_RC_FIRST_PASS ) return ; # if CONFIG_WEBM_IO if ( stream -> config . write_webm ) { <S2SV_StartBug> write_webm_file_footer ( & stream -> ebml , stream -> hash ) ; <S2SV_EndBug> free ( stream -> ebml . cue_list ) ; stream -> ebml . cue_list = NULL ; } # endif if ( ! stream -> config . write_webm ) { if ( ! fseek ( stream -> file , 0 , SEEK_SET ) ) ivf_write_file_header ( stream -> file , & stream -> config . cfg , fourcc , stream -> frames_out ) ; } fclose ( stream -> file ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> stream -> ebml ) <S2SV_ModEnd> ; } #\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void encode_uniform ( vp9_writer * w , int v ) { <S2SV_EndBug> const int l = 8 ; const int m = ( 1 << l ) - 191 ; if ( v < m ) { <S2SV_StartBug> vp9_write_literal ( w , v , l - 1 ) ; <S2SV_EndBug> } else { <S2SV_StartBug> vp9_write_literal ( w , m + ( ( v - m ) >> 1 ) , l - 1 ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_write_literal ( w , ( v - m ) & 1 , 1 ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void encode_uniform ( vpx_writer <S2SV_ModEnd> * w , <S2SV_ModStart> m ) { vpx_write_literal <S2SV_ModEnd> ( w , <S2SV_ModStart> } else { vpx_write_literal <S2SV_ModEnd> ( w , <S2SV_ModStart> 1 ) ; vpx_write_literal <S2SV_ModEnd> ( w ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2016\n\n```\nCWE-269 uint32_t virtio_config_readw ( VirtIODevice * vdev , uint32_t addr ) { VirtioDeviceClass * k = VIRTIO_DEVICE_GET_CLASS ( vdev ) ; uint16_t val ; <S2SV_StartBug> k -> get_config ( vdev , vdev -> config ) ; <S2SV_EndBug> if ( addr > ( vdev -> config_len - sizeof ( val ) ) ) return ( uint32_t ) - 1 ; val = lduw_p ( vdev -> config + addr ) ; return val ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint16_t val ; if ( addr + sizeof ( val ) > vdev -> config_len ) { return ( uint32_t ) - 1 ; } <S2SV_ModStart> -> config ) <S2SV_ModEnd> ; val =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5243\n\n```\nCWE-200 static int tipc_nl_compat_link_dump ( struct tipc_nl_compat_msg * msg , struct nlattr * * attrs ) { struct nlattr * link [ TIPC_NLA_LINK_MAX + 1 ] ; struct tipc_link_info link_info ; int err ; if ( ! attrs [ TIPC_NLA_LINK ] ) return - EINVAL ; err = nla_parse_nested ( link , TIPC_NLA_LINK_MAX , attrs [ TIPC_NLA_LINK ] , NULL ) ; if ( err ) return err ; link_info . dest = nla_get_flag ( link [ TIPC_NLA_LINK_DEST ] ) ; link_info . up = htonl ( nla_get_flag ( link [ TIPC_NLA_LINK_UP ] ) ) ; <S2SV_StartBug> strcpy ( link_info . str , nla_data ( link [ TIPC_NLA_LINK_NAME ] ) ) ; <S2SV_EndBug> return tipc_add_tlv ( msg -> rep , TIPC_TLV_LINK_INFO , & link_info , sizeof ( link_info ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; nla_strlcpy <S2SV_ModEnd> ( link_info . <S2SV_ModStart> TIPC_NLA_LINK_NAME ] ) , TIPC_MAX_LINK_NAME\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18174\n\n```\nCWE-415 static int amd_gpio_probe ( struct platform_device * pdev ) { int ret = 0 ; int irq_base ; struct resource * res ; struct amd_gpio * gpio_dev ; gpio_dev = devm_kzalloc ( & pdev -> dev , sizeof ( struct amd_gpio ) , GFP_KERNEL ) ; if ( ! gpio_dev ) return - ENOMEM ; spin_lock_init ( & gpio_dev -> lock ) ; res = platform_get_resource ( pdev , IORESOURCE_MEM , 0 ) ; if ( ! res ) { dev_err ( & pdev -> dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>gpio<S2SV_blank>io<S2SV_blank>resource.\\\\n\" ) ; return - EINVAL ; } gpio_dev -> base = devm_ioremap_nocache ( & pdev -> dev , res -> start , resource_size ( res ) ) ; if ( ! gpio_dev -> base ) return - ENOMEM ; irq_base = platform_get_irq ( pdev , 0 ) ; if ( irq_base < 0 ) { dev_err ( & pdev -> dev , \"Failed<S2SV_blank>to<S2SV_blank>get<S2SV_blank>gpio<S2SV_blank>IRQ.\\\\n\" ) ; return - EINVAL ; } gpio_dev -> pdev = pdev ; gpio_dev -> gc . direction_input = amd_gpio_direction_input ; gpio_dev -> gc . direction_output = amd_gpio_direction_output ; gpio_dev -> gc . get = amd_gpio_get_value ; gpio_dev -> gc . set = amd_gpio_set_value ; gpio_dev -> gc . set_debounce = amd_gpio_set_debounce ; gpio_dev -> gc . dbg_show = amd_gpio_dbg_show ; gpio_dev -> gc . base = 0 ; gpio_dev -> gc . label = pdev -> name ; gpio_dev -> gc . owner = THIS_MODULE ; gpio_dev -> gc . parent = & pdev -> dev ; gpio_dev -> gc . ngpio = TOTAL_NUMBER_OF_PINS ; # if defined ( CONFIG_OF_GPIO ) gpio_dev -> gc . of_node = pdev -> dev . of_node ; # endif gpio_dev -> groups = kerncz_groups ; gpio_dev -> ngroups = ARRAY_SIZE ( kerncz_groups ) ; amd_pinctrl_desc . name = dev_name ( & pdev -> dev ) ; <S2SV_StartBug> gpio_dev -> pctrl = pinctrl_register ( & amd_pinctrl_desc , <S2SV_EndBug> <S2SV_StartBug> & pdev -> dev , gpio_dev ) ; <S2SV_EndBug> if ( IS_ERR ( gpio_dev -> pctrl ) ) { dev_err ( & pdev -> dev , \"Couldn\\'t<S2SV_blank>register<S2SV_blank>pinctrl<S2SV_blank>driver\\\\n\" ) ; return PTR_ERR ( gpio_dev -> pctrl ) ; } ret = gpiochip_add_data ( & gpio_dev -> gc , gpio_dev ) ; if ( ret ) <S2SV_StartBug> goto out1 ; <S2SV_EndBug> ret = gpiochip_add_pin_range ( & gpio_dev -> gc , dev_name ( & pdev -> dev ) , 0 , 0 , TOTAL_NUMBER_OF_PINS ) ; if ( ret ) { dev_err ( & pdev -> dev , \"Failed<S2SV_blank>to<S2SV_blank>add<S2SV_blank>pin<S2SV_blank>range\\\\n\" ) ; goto out2 ; } ret = gpiochip_irqchip_add ( & gpio_dev -> gc , & amd_gpio_irqchip , 0 , handle_simple_irq , IRQ_TYPE_NONE ) ; if ( ret ) { dev_err ( & pdev -> dev , \"could<S2SV_blank>not<S2SV_blank>add<S2SV_blank>irqchip\\\\n\" ) ; ret = - ENODEV ; goto out2 ; } gpiochip_set_chained_irqchip ( & gpio_dev -> gc , & amd_gpio_irqchip , irq_base , amd_gpio_irq_handler ) ; platform_set_drvdata ( pdev , gpio_dev ) ; dev_dbg ( & pdev -> dev , \"amd<S2SV_blank>gpio<S2SV_blank>driver<S2SV_blank>loaded\\\\n\" ) ; return ret ; out2 : gpiochip_remove ( & gpio_dev -> gc ) ; <S2SV_StartBug> out1 : <S2SV_EndBug> pinctrl_unregister ( gpio_dev -> pctrl ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> pctrl = devm_pinctrl_register ( & pdev -> dev , <S2SV_ModEnd> & amd_pinctrl_desc , <S2SV_ModStart> & amd_pinctrl_desc , <S2SV_ModEnd> gpio_dev ) ; <S2SV_ModStart> ( ret ) return ret <S2SV_ModEnd> ; ret = <S2SV_ModStart> gc ) ; <S2SV_ModEnd> return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-59(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1335\n\n```\nCWE-59 static int setup_ttydir_console ( const struct lxc_rootfs * rootfs , const struct lxc_console * console , char * ttydir ) { char path [ MAXPATHLEN ] , lxcpath [ MAXPATHLEN ] ; int ret ; ret = snprintf ( path , sizeof ( path ) , \"%s/dev/%s\" , rootfs -> mount , ttydir ) ; if ( ret >= sizeof ( path ) ) return - 1 ; ret = mkdir ( path , 0755 ) ; if ( ret && errno != EEXIST ) { SYSERROR ( \"failed<S2SV_blank>with<S2SV_blank>errno<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>create<S2SV_blank>%s\" , errno , path ) ; return - 1 ; } INFO ( \"created<S2SV_blank>%s\" , path ) ; ret = snprintf ( lxcpath , sizeof ( lxcpath ) , \"%s/dev/%s/console\" , rootfs -> mount , ttydir ) ; if ( ret >= sizeof ( lxcpath ) ) { ERROR ( \"console<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } snprintf ( path , sizeof ( path ) , \"%s/dev/console\" , rootfs -> mount ) ; ret = unlink ( path ) ; if ( ret && errno != ENOENT ) { SYSERROR ( \"error<S2SV_blank>unlinking<S2SV_blank>%s\" , path ) ; return - 1 ; } ret = creat ( lxcpath , 0660 ) ; if ( ret == - 1 && errno != EEXIST ) { SYSERROR ( \"error<S2SV_blank>%d<S2SV_blank>creating<S2SV_blank>%s\" , errno , lxcpath ) ; return - 1 ; } if ( ret >= 0 ) close ( ret ) ; if ( console -> master < 0 ) { INFO ( \"no<S2SV_blank>console\" ) ; return 0 ; } <S2SV_StartBug> if ( mount ( console -> name , lxcpath , \"none\" , MS_BIND , 0 ) ) { <S2SV_EndBug> ERROR ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'\" , console -> name , lxcpath ) ; return - 1 ; } ret = snprintf ( lxcpath , sizeof ( lxcpath ) , \"%s/console\" , ttydir ) ; if ( ret >= sizeof ( lxcpath ) ) { ERROR ( \"lxc/console<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } ret = symlink ( lxcpath , path ) ; if ( ret ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>symlink<S2SV_blank>for<S2SV_blank>console\" ) ; return - 1 ; } INFO ( \"console<S2SV_blank>has<S2SV_blank>been<S2SV_blank>setup<S2SV_blank>on<S2SV_blank>%s\" , lxcpath ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( safe_mount ( console -> name , lxcpath , \"none\" , MS_BIND , 0 , rootfs -> mount ) ) { ERROR ( \"failed<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>\\'%s\\'<S2SV_blank>on<S2SV_blank>\\'%s\\'\" , <S2SV_ModEnd> console -> name <S2SV_ModStart> name , lxcpath ) ; return - 1 ; } ret = snprintf ( lxcpath , sizeof ( lxcpath ) , \"%s/console\" , ttydir ) ; if ( ret >= sizeof ( lxcpath ) ) { ERROR ( \"lxc/console<S2SV_blank>path<S2SV_blank>too<S2SV_blank>long\" ) ; return - 1 ; } ret = symlink ( lxcpath , path ) ; if ( ret ) { SYSERROR ( \"failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>symlink<S2SV_blank>for<S2SV_blank>console\" ) ; return - 1 ; } INFO ( \"console<S2SV_blank>has<S2SV_blank>been<S2SV_blank>setup<S2SV_blank>on<S2SV_blank>%s\" , lxcpath ) ; return 0 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8788\n\n```\nCWE-787 <S2SV_StartBug> static void nsc_decode ( NSC_CONTEXT * context ) <S2SV_EndBug> { UINT16 x ; UINT16 y ; <S2SV_StartBug> UINT16 rw = ROUND_UP_TO ( context -> width , 8 ) ; <S2SV_EndBug> <S2SV_StartBug> BYTE shift = context -> ColorLossLevel - 1 ; <S2SV_EndBug> <S2SV_StartBug> BYTE * bmpdata = context -> BitmapData ; <S2SV_EndBug> for ( y = 0 ; y < context -> height ; y ++ ) { const BYTE * yplane ; const BYTE * coplane ; const BYTE * cgplane ; const BYTE * aplane = context -> priv -> PlaneBuffers [ 3 ] + y * context -> width ; if ( context -> ChromaSubsamplingLevel ) { yplane = context -> priv -> PlaneBuffers [ 0 ] + y * rw ; coplane = context -> priv -> PlaneBuffers [ 1 ] + ( y >> 1 ) * ( rw >> 1 ) ; cgplane = context -> priv -> PlaneBuffers [ 2 ] + ( y >> 1 ) * ( rw >> 1 ) ; } else { yplane = context -> priv -> PlaneBuffers [ 0 ] + y * context -> width ; coplane = context -> priv -> PlaneBuffers [ 1 ] + y * context -> width ; cgplane = context -> priv -> PlaneBuffers [ 2 ] + y * context -> width ; } for ( x = 0 ; x < context -> width ; x ++ ) { INT16 y_val = ( INT16 ) * yplane ; INT16 co_val = ( INT16 ) ( INT8 ) ( * coplane << shift ) ; INT16 cg_val = ( INT16 ) ( INT8 ) ( * cgplane << shift ) ; INT16 r_val = y_val + co_val - cg_val ; INT16 g_val = y_val + cg_val ; INT16 b_val = y_val - co_val - cg_val ; <S2SV_StartBug> * bmpdata ++ = MINMAX ( b_val , 0 , 0xFF ) ; <S2SV_EndBug> * bmpdata ++ = MINMAX ( g_val , 0 , 0xFF ) ; * bmpdata ++ = MINMAX ( r_val , 0 , 0xFF ) ; * bmpdata ++ = * aplane ; yplane ++ ; coplane += ( context -> ChromaSubsamplingLevel ? x % 2 : 1 ) ; cgplane += ( context -> ChromaSubsamplingLevel ? x % 2 : 1 ) ; aplane ++ ; } } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static BOOL <S2SV_ModEnd> nsc_decode ( NSC_CONTEXT <S2SV_ModStart> ; UINT16 rw ; BYTE shift ; BYTE * bmpdata ; size_t pos = 0 ; if ( ! context ) return FALSE ; rw <S2SV_ModStart> 8 ) ; <S2SV_ModEnd> shift = context <S2SV_ModStart> - 1 ; <S2SV_ModEnd> bmpdata = context <S2SV_ModStart> context -> BitmapData ; if ( ! bmpdata ) return FALSE <S2SV_ModStart> - cg_val ; if ( pos + 4 > context -> BitmapDataLength ) return FALSE ; pos += 4 ; <S2SV_ModStart> ; } } return TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-24371\n\n```\nCWE-763 <S2SV_StartBug> static void atomic2gen ( lua_State * L , global_State * g ) { <S2SV_EndBug> sweep2old ( L , & g -> allgc ) ; g -> reallyold = g -> old = g -> survival = g -> allgc ; sweep2old ( L , & g -> finobj ) ; g -> finobjrold = g -> finobjold = g -> finobjsur = g -> finobj ; sweep2old ( L , & g -> tobefnz ) ; g -> gckind = KGC_GEN ; g -> lastatomic = 0 ; g -> GCestimate = gettotalbytes ( g ) ; finishgencycle ( L , g ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> g ) { g -> gcstate = GCSswpallgc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp8dx_start_decode ( BOOL_DECODER * br , const unsigned char * source , unsigned int source_sz , <S2SV_StartBug> vp8_decrypt_cb * decrypt_cb , <S2SV_EndBug> void * decrypt_state ) { br -> user_buffer_end = source + source_sz ; br -> user_buffer = source ; br -> value = 0 ; br -> count = - 8 ; br -> range = 255 ; br -> decrypt_cb = decrypt_cb ; br -> decrypt_state = decrypt_state ; if ( source_sz && ! source ) return 1 ; vp8dx_bool_decoder_fill ( br ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int source_sz , vpx_decrypt_cb <S2SV_ModEnd> decrypt_cb , void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4344\n\n```\nCWE-476 static OM_uint32 acc_ctx_cont ( OM_uint32 * minstat , gss_buffer_t buf , gss_ctx_id_t * ctx , gss_buffer_t * responseToken , gss_buffer_t * mechListMIC , OM_uint32 * negState , send_token_flag * return_token ) { OM_uint32 ret , tmpmin ; gss_OID supportedMech ; spnego_gss_ctx_id_t sc ; unsigned int len ; unsigned char * ptr , * bufstart ; sc = ( spnego_gss_ctx_id_t ) * ctx ; ret = GSS_S_DEFECTIVE_TOKEN ; * negState = REJECT ; * minstat = 0 ; supportedMech = GSS_C_NO_OID ; * return_token = ERROR_TOKEN_SEND ; * responseToken = * mechListMIC = GSS_C_NO_BUFFER ; ptr = bufstart = buf -> value ; # define REMAIN ( buf -> length - ( ptr - bufstart ) ) <S2SV_StartBug> if ( REMAIN > INT_MAX ) <S2SV_EndBug> return GSS_S_DEFECTIVE_TOKEN ; if ( * ptr == HEADER_ID ) { ret = g_verify_token_header ( gss_mech_spnego , & len , & ptr , 0 , REMAIN ) ; if ( ret ) { * minstat = ret ; return GSS_S_DEFECTIVE_TOKEN ; } } if ( * ptr != ( CONTEXT | 0x01 ) ) { return GSS_S_DEFECTIVE_TOKEN ; } ret = get_negTokenResp ( minstat , ptr , REMAIN , negState , & supportedMech , responseToken , mechListMIC ) ; if ( ret != GSS_S_COMPLETE ) goto cleanup ; if ( * responseToken == GSS_C_NO_BUFFER && * mechListMIC == GSS_C_NO_BUFFER ) { ret = GSS_S_DEFECTIVE_TOKEN ; goto cleanup ; } if ( supportedMech != GSS_C_NO_OID ) { ret = GSS_S_DEFECTIVE_TOKEN ; goto cleanup ; } sc -> firstpass = 0 ; * negState = ACCEPT_INCOMPLETE ; * return_token = CONT_TOKEN_SEND ; cleanup : if ( supportedMech != GSS_C_NO_OID ) { generic_gss_release_oid ( & tmpmin , & supportedMech ) ; } return ret ; # undef REMAIN }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if ( REMAIN == 0 || REMAIN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16996\n\n```\nCWE-119 static int check_alu_op ( struct bpf_verifier_env * env , struct bpf_insn * insn ) { struct bpf_reg_state * regs = cur_regs ( env ) ; u8 opcode = BPF_OP ( insn -> code ) ; int err ; if ( opcode == BPF_END || opcode == BPF_NEG ) { if ( opcode == BPF_NEG ) { if ( BPF_SRC ( insn -> code ) != 0 || insn -> src_reg != BPF_REG_0 || insn -> off != 0 || insn -> imm != 0 ) { verbose ( env , \"BPF_NEG<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 || ( insn -> imm != 16 && insn -> imm != 32 && insn -> imm != 64 ) || BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { verbose ( env , \"BPF_END<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , insn -> dst_reg ) ) { verbose ( env , \"R%d<S2SV_blank>pointer<S2SV_blank>arithmetic<S2SV_blank>prohibited\\\\n\" , insn -> dst_reg ) ; return - EACCES ; } err = check_reg_arg ( env , insn -> dst_reg , DST_OP ) ; if ( err ) return err ; } else if ( opcode == BPF_MOV ) { if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 || insn -> off != 0 ) { verbose ( env , \"BPF_MOV<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 ) { verbose ( env , \"BPF_MOV<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , DST_OP ) ; if ( err ) return err ; if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { regs [ insn -> dst_reg ] = regs [ insn -> src_reg ] ; regs [ insn -> dst_reg ] . live |= REG_LIVE_WRITTEN ; } else { if ( is_pointer_value ( env , insn -> src_reg ) ) { verbose ( env , \"R%d<S2SV_blank>partial<S2SV_blank>copy<S2SV_blank>of<S2SV_blank>pointer\\\\n\" , insn -> src_reg ) ; return - EACCES ; } mark_reg_unknown ( env , regs , insn -> dst_reg ) ; <S2SV_StartBug> regs [ insn -> dst_reg ] . var_off = tnum_cast ( <S2SV_EndBug> regs [ insn -> dst_reg ] . var_off , 4 ) ; <S2SV_StartBug> __update_reg_bounds ( & regs [ insn -> dst_reg ] ) ; <S2SV_EndBug> } } else { regs [ insn -> dst_reg ] . type = SCALAR_VALUE ; if ( BPF_CLASS ( insn -> code ) == BPF_ALU64 ) { __mark_reg_known ( regs + insn -> dst_reg , insn -> imm ) ; } else { __mark_reg_known ( regs + insn -> dst_reg , ( u32 ) insn -> imm ) ; } } } else if ( opcode > BPF_END ) { verbose ( env , \"invalid<S2SV_blank>BPF_ALU<S2SV_blank>opcode<S2SV_blank>%x\\\\n\" , opcode ) ; return - EINVAL ; } else { if ( BPF_SRC ( insn -> code ) == BPF_X ) { if ( insn -> imm != 0 || insn -> off != 0 ) { verbose ( env , \"BPF_ALU<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; } else { if ( insn -> src_reg != BPF_REG_0 || insn -> off != 0 ) { verbose ( env , \"BPF_ALU<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; if ( ( opcode == BPF_MOD || opcode == BPF_DIV ) && BPF_SRC ( insn -> code ) == BPF_K && insn -> imm == 0 ) { verbose ( env , \"div<S2SV_blank>by<S2SV_blank>zero\\\\n\" ) ; return - EINVAL ; } if ( ( opcode == BPF_LSH || opcode == BPF_RSH || opcode == BPF_ARSH ) && BPF_SRC ( insn -> code ) == BPF_K ) { int size = BPF_CLASS ( insn -> code ) == BPF_ALU64 ? 64 : 32 ; if ( insn -> imm < 0 || insn -> imm >= size ) { verbose ( env , \"invalid<S2SV_blank>shift<S2SV_blank>%d\\\\n\" , insn -> imm ) ; return - EINVAL ; } } err = check_reg_arg ( env , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; return adjust_reg_min_max_vals ( env , insn ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dst_reg ) ; coerce_reg_to_size <S2SV_ModEnd> ( & regs <S2SV_ModStart> -> dst_reg ] , 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0551\n\n```\nCWE-000 <S2SV_StartBug> WORD32 ih264d_end_of_pic ( dec_struct_t * ps_dec , <S2SV_EndBug> UWORD8 u1_is_idr_slice , UWORD16 u2_frame_num ) { dec_slice_params_t * ps_cur_slice = ps_dec -> ps_cur_slice ; <S2SV_StartBug> WORD32 ret ; <S2SV_EndBug> ps_dec -> u2_mbx = 0xffff ; ps_dec -> u2_mby = 0 ; { dec_err_status_t * ps_err = ps_dec -> ps_dec_err_status ; if ( ps_err -> u1_err_flag & REJECT_CUR_PIC ) { ih264d_err_pic_dispbuf_mgr ( ps_dec ) ; return ERROR_NEW_FRAME_EXPECTED ; } } H264_MUTEX_LOCK ( & ps_dec -> process_disp_mutex ) ; ret = ih264d_end_of_pic_processing ( ps_dec ) ; if ( ret != OK ) return ret ; <S2SV_StartBug> ps_dec -> u2_total_mbs_coded = 0 ; <S2SV_EndBug> { pocstruct_t * ps_prev_poc = & ps_dec -> s_prev_pic_poc ; pocstruct_t * ps_cur_poc = & ps_dec -> s_cur_pic_poc ; if ( ( 0 == u1_is_idr_slice ) && ps_cur_slice -> u1_nal_ref_idc ) ps_dec -> u2_prev_ref_frame_num = ps_cur_slice -> u2_frame_num ; if ( u1_is_idr_slice || ps_cur_slice -> u1_mmco_equalto5 ) ps_dec -> u2_prev_ref_frame_num = 0 ; if ( ps_dec -> ps_cur_sps -> u1_gaps_in_frame_num_value_allowed_flag ) { ret = ih264d_decode_gaps_in_frame_num ( ps_dec , u2_frame_num ) ; if ( ret != OK ) return ret ; } ps_prev_poc -> i4_prev_frame_num_ofst = ps_cur_poc -> i4_prev_frame_num_ofst ; ps_prev_poc -> u2_frame_num = ps_cur_poc -> u2_frame_num ; ps_prev_poc -> u1_mmco_equalto5 = ps_cur_slice -> u1_mmco_equalto5 ; if ( ps_cur_slice -> u1_nal_ref_idc ) { ps_prev_poc -> i4_pic_order_cnt_lsb = ps_cur_poc -> i4_pic_order_cnt_lsb ; ps_prev_poc -> i4_pic_order_cnt_msb = ps_cur_poc -> i4_pic_order_cnt_msb ; ps_prev_poc -> i4_delta_pic_order_cnt_bottom = ps_cur_poc -> i4_delta_pic_order_cnt_bottom ; ps_prev_poc -> i4_delta_pic_order_cnt [ 0 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 0 ] ; ps_prev_poc -> i4_delta_pic_order_cnt [ 1 ] = ps_cur_poc -> i4_delta_pic_order_cnt [ 1 ] ; ps_prev_poc -> u1_bot_field = ps_cur_poc -> u1_bot_field ; } } H264_MUTEX_UNLOCK ( & ps_dec -> process_disp_mutex ) ; return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dec_struct_t * ps_dec <S2SV_ModEnd> ) { dec_slice_params_t <S2SV_ModStart> ; WORD32 ret <S2SV_ModEnd> ; { dec_err_status_t <S2SV_ModStart> return ret ; <S2SV_ModEnd> H264_MUTEX_UNLOCK ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-674(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19645\n\n```\nCWE-674 static void renameColumnFunc ( sqlite3_context * context , int NotUsed , sqlite3_value * * argv ) { sqlite3 * db = sqlite3_context_db_handle ( context ) ; RenameCtx sCtx ; const char * zSql = ( const char * ) sqlite3_value_text ( argv [ 0 ] ) ; const char * zDb = ( const char * ) sqlite3_value_text ( argv [ 3 ] ) ; const char * zTable = ( const char * ) sqlite3_value_text ( argv [ 4 ] ) ; int iCol = sqlite3_value_int ( argv [ 5 ] ) ; const char * zNew = ( const char * ) sqlite3_value_text ( argv [ 6 ] ) ; int bQuote = sqlite3_value_int ( argv [ 7 ] ) ; int bTemp = sqlite3_value_int ( argv [ 8 ] ) ; const char * zOld ; int rc ; Parse sParse ; Walker sWalker ; Index * pIdx ; int i ; Table * pTab ; # ifndef SQLITE_OMIT_AUTHORIZATION sqlite3_xauth xAuth = db -> xAuth ; # endif UNUSED_PARAMETER ( NotUsed ) ; if ( zSql == 0 ) return ; if ( zTable == 0 ) return ; if ( zNew == 0 ) return ; if ( iCol < 0 ) return ; sqlite3BtreeEnterAll ( db ) ; pTab = sqlite3FindTable ( db , zTable , zDb ) ; if ( pTab == 0 || iCol >= pTab -> nCol ) { sqlite3BtreeLeaveAll ( db ) ; return ; } zOld = pTab -> aCol [ iCol ] . zName ; memset ( & sCtx , 0 , sizeof ( sCtx ) ) ; sCtx . iCol = ( ( iCol == pTab -> iPKey ) ? - 1 : iCol ) ; # ifndef SQLITE_OMIT_AUTHORIZATION db -> xAuth = 0 ; # endif rc = renameParseSql ( & sParse , zDb , 0 , db , zSql , bTemp ) ; memset ( & sWalker , 0 , sizeof ( Walker ) ) ; sWalker . pParse = & sParse ; sWalker . xExprCallback = renameColumnExprCb ; sWalker . xSelectCallback = renameColumnSelectCb ; sWalker . u . pRename = & sCtx ; sCtx . pTab = pTab ; if ( rc != SQLITE_OK ) goto renameColumnFunc_done ; if ( sParse . pNewTable ) { Select * pSelect = sParse . pNewTable -> pSelect ; if ( pSelect ) { <S2SV_StartBug> sParse . rc = SQLITE_OK ; <S2SV_EndBug> <S2SV_StartBug> sqlite3SelectPrep ( & sParse , sParse . pNewTable -> pSelect , 0 ) ; <S2SV_EndBug> rc = ( db -> mallocFailed ? SQLITE_NOMEM : sParse . rc ) ; if ( rc == SQLITE_OK ) { sqlite3WalkSelect ( & sWalker , pSelect ) ; } if ( rc != SQLITE_OK ) goto renameColumnFunc_done ; } else { int bFKOnly = sqlite3_stricmp ( zTable , sParse . pNewTable -> zName ) ; FKey * pFKey ; assert ( sParse . pNewTable -> pSelect == 0 ) ; sCtx . pTab = sParse . pNewTable ; if ( bFKOnly == 0 ) { renameTokenFind ( & sParse , & sCtx , ( void * ) sParse . pNewTable -> aCol [ iCol ] . zName ) ; if ( sCtx . iCol < 0 ) { renameTokenFind ( & sParse , & sCtx , ( void * ) & sParse . pNewTable -> iPKey ) ; } sqlite3WalkExprList ( & sWalker , sParse . pNewTable -> pCheck ) ; for ( pIdx = sParse . pNewTable -> pIndex ; pIdx ; pIdx = pIdx -> pNext ) { sqlite3WalkExprList ( & sWalker , pIdx -> aColExpr ) ; } for ( pIdx = sParse . pNewIndex ; pIdx ; pIdx = pIdx -> pNext ) { sqlite3WalkExprList ( & sWalker , pIdx -> aColExpr ) ; } } # ifndef SQLITE_OMIT_GENERATED_COLUMNS for ( i = 0 ; i < sParse . pNewTable -> nCol ; i ++ ) { sqlite3WalkExpr ( & sWalker , sParse . pNewTable -> aCol [ i ] . pDflt ) ; } # endif for ( pFKey = sParse . pNewTable -> pFKey ; pFKey ; pFKey = pFKey -> pNextFrom ) { for ( i = 0 ; i < pFKey -> nCol ; i ++ ) { if ( bFKOnly == 0 && pFKey -> aCol [ i ] . iFrom == iCol ) { renameTokenFind ( & sParse , & sCtx , ( void * ) & pFKey -> aCol [ i ] ) ; } if ( 0 == sqlite3_stricmp ( pFKey -> zTo , zTable ) && 0 == sqlite3_stricmp ( pFKey -> aCol [ i ] . zCol , zOld ) ) { renameTokenFind ( & sParse , & sCtx , ( void * ) pFKey -> aCol [ i ] . zCol ) ; } } } } } else if ( sParse . pNewIndex ) { sqlite3WalkExprList ( & sWalker , sParse . pNewIndex -> aColExpr ) ; sqlite3WalkExpr ( & sWalker , sParse . pNewIndex -> pPartIdxWhere ) ; } else { TriggerStep * pStep ; rc = renameResolveTrigger ( & sParse , ( bTemp ? 0 : zDb ) ) ; if ( rc != SQLITE_OK ) goto renameColumnFunc_done ; for ( pStep = sParse . pNewTrigger -> step_list ; pStep ; pStep = pStep -> pNext ) { if ( pStep -> zTarget ) { Table * pTarget = sqlite3LocateTable ( & sParse , 0 , pStep -> zTarget , zDb ) ; if ( pTarget == pTab ) { if ( pStep -> pUpsert ) { ExprList * pUpsertSet = pStep -> pUpsert -> pUpsertSet ; renameColumnElistNames ( & sParse , & sCtx , pUpsertSet , zOld ) ; } renameColumnIdlistNames ( & sParse , & sCtx , pStep -> pIdList , zOld ) ; renameColumnElistNames ( & sParse , & sCtx , pStep -> pExprList , zOld ) ; } } } if ( sParse . pTriggerTab == pTab ) { renameColumnIdlistNames ( & sParse , & sCtx , sParse . pNewTrigger -> pColumns , zOld ) ; } renameWalkTrigger ( & sWalker , sParse . pNewTrigger ) ; } assert ( rc == SQLITE_OK ) ; rc = renameEditSql ( context , & sCtx , zSql , zNew , bQuote ) ; renameColumnFunc_done : if ( rc != SQLITE_OK ) { if ( sParse . zErrMsg ) { renameColumnParseError ( context , 0 , argv [ 1 ] , argv [ 2 ] , & sParse ) ; } else { sqlite3_result_error_code ( context , rc ) ; } } renameParseCleanup ( & sParse ) ; renameTokenFree ( db , sCtx . pList ) ; # ifndef SQLITE_OMIT_AUTHORIZATION db -> xAuth = xAuth ; # endif sqlite3BtreeLeaveAll ( db ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pSelect ) { pSelect -> selFlags &= ~ SF_View ; <S2SV_ModStart> & sParse , <S2SV_ModEnd> pSelect , 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-552(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15224\n\n```\nCWE-552 static ssize_t _consolefs_write ( oe_fd_t * file_ , const void * buf , size_t count ) { ssize_t ret = - 1 ; file_t * file = _cast_file ( file_ ) ; <S2SV_StartBug> if ( ! file ) <S2SV_EndBug> OE_RAISE_ERRNO ( OE_EINVAL ) ; if ( oe_syscall_write_ocall ( & ret , file -> host_fd , buf , count ) != OE_OK ) OE_RAISE_ERRNO ( OE_EINVAL ) ; <S2SV_StartBug> done : <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ! file || count > OE_SSIZE_MAX <S2SV_ModStart> OE_EINVAL ) ; if ( ret > ( ssize_t ) count ) { ret = - 1 ; OE_RAISE_ERRNO ( OE_EINVAL ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-2384\n\n```\nCWE-189 static int i915_gem_do_execbuffer ( struct drm_device * dev , void * data , struct drm_file * file , struct drm_i915_gem_execbuffer2 * args , struct drm_i915_gem_exec_object2 * exec ) { drm_i915_private_t * dev_priv = dev -> dev_private ; struct list_head objects ; struct eb_objects * eb ; struct drm_i915_gem_object * batch_obj ; struct drm_clip_rect * cliprects = NULL ; struct intel_ring_buffer * ring ; u32 exec_start , exec_len ; u32 seqno ; u32 mask ; int ret , mode , i ; if ( ! i915_gem_check_execbuffer ( args ) ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>offset/length\\\\n\" ) ; return - EINVAL ; } ret = validate_exec_list ( exec , args -> buffer_count ) ; if ( ret ) return ret ; switch ( args -> flags & I915_EXEC_RING_MASK ) { case I915_EXEC_DEFAULT : case I915_EXEC_RENDER : ring = & dev_priv -> ring [ RCS ] ; break ; case I915_EXEC_BSD : if ( ! HAS_BSD ( dev ) ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>ring<S2SV_blank>(BSD)\\\\n\" ) ; return - EINVAL ; } ring = & dev_priv -> ring [ VCS ] ; break ; case I915_EXEC_BLT : if ( ! HAS_BLT ( dev ) ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>invalid<S2SV_blank>ring<S2SV_blank>(BLT)\\\\n\" ) ; return - EINVAL ; } ring = & dev_priv -> ring [ BCS ] ; break ; default : DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>unknown<S2SV_blank>ring:<S2SV_blank>%d\\\\n\" , ( int ) ( args -> flags & I915_EXEC_RING_MASK ) ) ; return - EINVAL ; } mode = args -> flags & I915_EXEC_CONSTANTS_MASK ; mask = I915_EXEC_CONSTANTS_MASK ; switch ( mode ) { case I915_EXEC_CONSTANTS_REL_GENERAL : case I915_EXEC_CONSTANTS_ABSOLUTE : case I915_EXEC_CONSTANTS_REL_SURFACE : if ( ring == & dev_priv -> ring [ RCS ] && mode != dev_priv -> relative_constants_mode ) { if ( INTEL_INFO ( dev ) -> gen < 4 ) return - EINVAL ; if ( INTEL_INFO ( dev ) -> gen > 5 && mode == I915_EXEC_CONSTANTS_REL_SURFACE ) return - EINVAL ; if ( INTEL_INFO ( dev ) -> gen >= 6 ) mask &= ~ I915_EXEC_CONSTANTS_REL_SURFACE ; } break ; default : DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>unknown<S2SV_blank>constants:<S2SV_blank>%d\\\\n\" , mode ) ; return - EINVAL ; } if ( args -> buffer_count < 1 ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>%d<S2SV_blank>buffers\\\\n\" , args -> buffer_count ) ; return - EINVAL ; } if ( args -> num_cliprects != 0 ) { if ( ring != & dev_priv -> ring [ RCS ] ) { <S2SV_StartBug> DRM_DEBUG ( \"clip<S2SV_blank>rectangles<S2SV_blank>are<S2SV_blank>only<S2SV_blank>valid<S2SV_blank>with<S2SV_blank>the<S2SV_blank>render<S2SV_blank>ring\\\\n\" ) ; <S2SV_EndBug> return - EINVAL ; } cliprects = kmalloc ( args -> num_cliprects * sizeof ( * cliprects ) , GFP_KERNEL ) ; if ( cliprects == NULL ) { ret = - ENOMEM ; goto pre_mutex_err ; } if ( copy_from_user ( cliprects , ( struct drm_clip_rect __user * ) ( uintptr_t ) args -> cliprects_ptr , sizeof ( * cliprects ) * args -> num_cliprects ) ) { ret = - EFAULT ; goto pre_mutex_err ; } } ret = i915_mutex_lock_interruptible ( dev ) ; if ( ret ) goto pre_mutex_err ; if ( dev_priv -> mm . suspended ) { mutex_unlock ( & dev -> struct_mutex ) ; ret = - EBUSY ; goto pre_mutex_err ; } eb = eb_create ( args -> buffer_count ) ; if ( eb == NULL ) { mutex_unlock ( & dev -> struct_mutex ) ; ret = - ENOMEM ; goto pre_mutex_err ; } INIT_LIST_HEAD ( & objects ) ; for ( i = 0 ; i < args -> buffer_count ; i ++ ) { struct drm_i915_gem_object * obj ; obj = to_intel_bo ( drm_gem_object_lookup ( dev , file , exec [ i ] . handle ) ) ; if ( & obj -> base == NULL ) { DRM_DEBUG ( \"Invalid<S2SV_blank>object<S2SV_blank>handle<S2SV_blank>%d<S2SV_blank>at<S2SV_blank>index<S2SV_blank>%d\\\\n\" , exec [ i ] . handle , i ) ; ret = - ENOENT ; goto err ; } if ( ! list_empty ( & obj -> exec_list ) ) { DRM_DEBUG ( \"Object<S2SV_blank>%p<S2SV_blank>[handle<S2SV_blank>%d,<S2SV_blank>index<S2SV_blank>%d]<S2SV_blank>appears<S2SV_blank>more<S2SV_blank>than<S2SV_blank>once<S2SV_blank>in<S2SV_blank>object<S2SV_blank>list\\\\n\" , obj , exec [ i ] . handle , i ) ; ret = - EINVAL ; goto err ; } list_add_tail ( & obj -> exec_list , & objects ) ; obj -> exec_handle = exec [ i ] . handle ; obj -> exec_entry = & exec [ i ] ; eb_add_object ( eb , obj ) ; } batch_obj = list_entry ( objects . prev , struct drm_i915_gem_object , exec_list ) ; ret = i915_gem_execbuffer_reserve ( ring , file , & objects ) ; if ( ret ) goto err ; ret = i915_gem_execbuffer_relocate ( dev , eb , & objects ) ; if ( ret ) { if ( ret == - EFAULT ) { ret = i915_gem_execbuffer_relocate_slow ( dev , file , ring , & objects , eb , exec , args -> buffer_count ) ; BUG_ON ( ! mutex_is_locked ( & dev -> struct_mutex ) ) ; } if ( ret ) goto err ; } if ( batch_obj -> base . pending_write_domain ) { DRM_DEBUG ( \"Attempting<S2SV_blank>to<S2SV_blank>use<S2SV_blank>self-modifying<S2SV_blank>batch<S2SV_blank>buffer\\\\n\" ) ; ret = - EINVAL ; goto err ; } batch_obj -> base . pending_read_domains |= I915_GEM_DOMAIN_COMMAND ; ret = i915_gem_execbuffer_move_to_gpu ( ring , & objects ) ; if ( ret ) goto err ; seqno = i915_gem_next_request_seqno ( ring ) ; for ( i = 0 ; i < ARRAY_SIZE ( ring -> sync_seqno ) ; i ++ ) { if ( seqno < ring -> sync_seqno [ i ] ) { ret = i915_gpu_idle ( dev , true ) ; if ( ret ) goto err ; BUG_ON ( ring -> sync_seqno [ i ] ) ; } } if ( ring == & dev_priv -> ring [ RCS ] && mode != dev_priv -> relative_constants_mode ) { ret = intel_ring_begin ( ring , 4 ) ; if ( ret ) goto err ; intel_ring_emit ( ring , MI_NOOP ) ; intel_ring_emit ( ring , MI_LOAD_REGISTER_IMM ( 1 ) ) ; intel_ring_emit ( ring , INSTPM ) ; intel_ring_emit ( ring , mask << 16 | mode ) ; intel_ring_advance ( ring ) ; dev_priv -> relative_constants_mode = mode ; } if ( args -> flags & I915_EXEC_GEN7_SOL_RESET ) { ret = i915_reset_gen7_sol_offsets ( dev , ring ) ; if ( ret ) goto err ; } trace_i915_gem_ring_dispatch ( ring , seqno ) ; exec_start = batch_obj -> gtt_offset + args -> batch_start_offset ; exec_len = args -> batch_len ; if ( cliprects ) { for ( i = 0 ; i < args -> num_cliprects ; i ++ ) { ret = i915_emit_box ( dev , & cliprects [ i ] , args -> DR1 , args -> DR4 ) ; if ( ret ) goto err ; ret = ring -> dispatch_execbuffer ( ring , exec_start , exec_len ) ; if ( ret ) goto err ; } } else { ret = ring -> dispatch_execbuffer ( ring , exec_start , exec_len ) ; if ( ret ) goto err ; } i915_gem_execbuffer_move_to_active ( & objects , ring , seqno ) ; i915_gem_execbuffer_retire_commands ( dev , file , ring ) ; err : eb_destroy ( eb ) ; while ( ! list_empty ( & objects ) ) { struct drm_i915_gem_object * obj ; obj = list_first_entry ( & objects , struct drm_i915_gem_object , exec_list ) ; list_del_init ( & obj -> exec_list ) ; drm_gem_object_unreference ( & obj -> base ) ; } mutex_unlock ( & dev -> struct_mutex ) ; pre_mutex_err : kfree ( cliprects ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> DRM_DEBUG ( \"clip<S2SV_blank>rectangles<S2SV_blank>are<S2SV_blank>only<S2SV_blank>valid<S2SV_blank>with<S2SV_blank>the<S2SV_blank>render<S2SV_blank>ring\\\\n\" ) ; return - EINVAL ; } if ( args -> num_cliprects > UINT_MAX / sizeof ( * cliprects ) ) { DRM_DEBUG ( \"execbuf<S2SV_blank>with<S2SV_blank>%u<S2SV_blank>cliprects\\\\n\" , args -> num_cliprects\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-4170\n\n```\nCWE-362 static inline int ldsem_cmpxchg ( long * old , long new , struct ld_semaphore * sem ) { <S2SV_StartBug> long tmp = * old ; <S2SV_EndBug> * old = atomic_long_cmpxchg ( & sem -> count , * old , new ) ; <S2SV_StartBug> return * old == tmp ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> long tmp = <S2SV_ModEnd> atomic_long_cmpxchg ( & <S2SV_ModStart> new ) ; if ( tmp == * old ) { * old = new ; return 1 ; } else { * old = tmp ; return 0 ; } <S2SV_ModEnd> } <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11411\n\n```\nCWE-787 static void numtostr ( js_State * J , const char * fmt , int w , double n ) { <S2SV_StartBug> char buf [ 32 ] , * e ; <S2SV_EndBug> sprintf ( buf , fmt , w , n ) ; e = strchr ( buf , 'e' ) ; if ( e ) { int exp = atoi ( e + 1 ) ; sprintf ( e , \"e%+d\" , exp ) ; } js_pushstring ( J , buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ 50 <S2SV_ModEnd> ] , *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3364\n\n```\nCWE-119 static __u8 * nci_extract_rf_params_nfcf_passive_poll ( struct nci_dev * ndev , struct rf_tech_specific_params_nfcf_poll * nfcf_poll , __u8 * data ) { nfcf_poll -> bit_rate = * data ++ ; <S2SV_StartBug> nfcf_poll -> sensf_res_len = * data ++ ; <S2SV_EndBug> pr_debug ( \"bit_rate<S2SV_blank>%d,<S2SV_blank>sensf_res_len<S2SV_blank>%d\\\\n\" , nfcf_poll -> bit_rate , nfcf_poll -> sensf_res_len ) ; memcpy ( nfcf_poll -> sensf_res , data , nfcf_poll -> sensf_res_len ) ; data += nfcf_poll -> sensf_res_len ; return data ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> sensf_res_len = min_t ( __u8 , <S2SV_ModStart> * data ++ , NFC_SENSF_RES_MAXSIZE )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14734\n\n```\nCWE-416 static ssize_t ucma_process_join ( struct ucma_file * file , struct rdma_ucm_join_mcast * cmd , int out_len ) { struct rdma_ucm_create_id_resp resp ; struct ucma_context * ctx ; struct ucma_multicast * mc ; struct sockaddr * addr ; int ret ; u8 join_state ; if ( out_len < sizeof ( resp ) ) return - ENOSPC ; addr = ( struct sockaddr * ) & cmd -> addr ; if ( cmd -> addr_size != rdma_addr_size ( addr ) ) return - EINVAL ; if ( cmd -> join_flags == RDMA_MC_JOIN_FLAG_FULLMEMBER ) join_state = BIT ( FULLMEMBER_JOIN ) ; else if ( cmd -> join_flags == RDMA_MC_JOIN_FLAG_SENDONLY_FULLMEMBER ) join_state = BIT ( SENDONLY_FULLMEMBER_JOIN ) ; else return - EINVAL ; ctx = ucma_get_ctx_dev ( file , cmd -> id ) ; if ( IS_ERR ( ctx ) ) return PTR_ERR ( ctx ) ; mutex_lock ( & file -> mut ) ; mc = ucma_alloc_multicast ( ctx ) ; if ( ! mc ) { ret = - ENOMEM ; goto err1 ; } mc -> join_state = join_state ; mc -> uid = cmd -> uid ; memcpy ( & mc -> addr , addr , cmd -> addr_size ) ; ret = rdma_join_multicast ( ctx -> cm_id , ( struct sockaddr * ) & mc -> addr , join_state , mc ) ; if ( ret ) goto err2 ; resp . id = mc -> id ; if ( copy_to_user ( u64_to_user_ptr ( cmd -> response ) , & resp , sizeof ( resp ) ) ) { ret = - EFAULT ; goto err3 ; } <S2SV_StartBug> mutex_unlock ( & file -> mut ) ; <S2SV_EndBug> ucma_put_ctx ( ctx ) ; return 0 ; err3 : rdma_leave_multicast ( ctx -> cm_id , ( struct sockaddr * ) & mc -> addr ) ; ucma_cleanup_mc_events ( mc ) ; err2 : mutex_lock ( & mut ) ; idr_remove ( & multicast_idr , mc -> id ) ; mutex_unlock ( & mut ) ; list_del ( & mc -> list ) ; kfree ( mc ) ; err1 : mutex_unlock ( & file -> mut ) ; ucma_put_ctx ( ctx ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err3 ; } mutex_lock ( & mut ) ; idr_replace ( & multicast_idr , mc , mc -> id ) ; mutex_unlock ( & mut ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20218\n\n```\nCWE-000 static int selectExpander ( Walker * pWalker , Select * p ) { Parse * pParse = pWalker -> pParse ; int i , j , k ; SrcList * pTabList ; ExprList * pEList ; struct SrcList_item * pFrom ; sqlite3 * db = pParse -> db ; Expr * pE , * pRight , * pExpr ; u16 selFlags = p -> selFlags ; u32 elistFlags = 0 ; p -> selFlags |= SF_Expanded ; if ( db -> mallocFailed ) { return WRC_Abort ; } assert ( p -> pSrc != 0 ) ; if ( ( selFlags & SF_Expanded ) != 0 ) { return WRC_Prune ; } if ( pWalker -> eCode ) { p -> selId = ++ pParse -> nSelect ; } pTabList = p -> pSrc ; pEList = p -> pEList ; sqlite3WithPush ( pParse , p -> pWith , 0 ) ; sqlite3SrcListAssignCursors ( pParse , pTabList ) ; for ( i = 0 , pFrom = pTabList -> a ; i < pTabList -> nSrc ; i ++ , pFrom ++ ) { Table * pTab ; assert ( pFrom -> fg . isRecursive == 0 || pFrom -> pTab != 0 ) ; if ( pFrom -> fg . isRecursive ) continue ; assert ( pFrom -> pTab == 0 ) ; # ifndef SQLITE_OMIT_CTE if ( withExpand ( pWalker , pFrom ) ) return WRC_Abort ; if ( pFrom -> pTab ) { } else # endif if ( pFrom -> zName == 0 ) { # ifndef SQLITE_OMIT_SUBQUERY Select * pSel = pFrom -> pSelect ; assert ( pSel != 0 ) ; assert ( pFrom -> pTab == 0 ) ; if ( sqlite3WalkSelect ( pWalker , pSel ) ) return WRC_Abort ; if ( sqlite3ExpandSubquery ( pParse , pFrom ) ) return WRC_Abort ; # endif } else { assert ( pFrom -> pTab == 0 ) ; pFrom -> pTab = pTab = sqlite3LocateTableItem ( pParse , 0 , pFrom ) ; if ( pTab == 0 ) return WRC_Abort ; if ( pTab -> nTabRef >= 0xffff ) { sqlite3ErrorMsg ( pParse , \"too<S2SV_blank>many<S2SV_blank>references<S2SV_blank>to<S2SV_blank>\\\\\"%s\\\\\":<S2SV_blank>max<S2SV_blank>65535\" , pTab -> zName ) ; pFrom -> pTab = 0 ; return WRC_Abort ; } pTab -> nTabRef ++ ; if ( ! IsVirtual ( pTab ) && cannotBeFunction ( pParse , pFrom ) ) { return WRC_Abort ; } # if ! defined ( SQLITE_OMIT_VIEW ) || ! defined ( SQLITE_OMIT_VIRTUALTABLE ) if ( IsVirtual ( pTab ) || pTab -> pSelect ) { i16 nCol ; u8 eCodeOrig = pWalker -> eCode ; if ( sqlite3ViewGetColumnNames ( pParse , pTab ) ) return WRC_Abort ; assert ( pFrom -> pSelect == 0 ) ; if ( pTab -> pSelect && ( db -> flags & SQLITE_EnableView ) == 0 ) { sqlite3ErrorMsg ( pParse , \"access<S2SV_blank>to<S2SV_blank>view<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>prohibited\" , pTab -> zName ) ; } pFrom -> pSelect = sqlite3SelectDup ( db , pTab -> pSelect , 0 ) ; nCol = pTab -> nCol ; pTab -> nCol = - 1 ; pWalker -> eCode = 1 ; sqlite3WalkSelect ( pWalker , pFrom -> pSelect ) ; pWalker -> eCode = eCodeOrig ; pTab -> nCol = nCol ; } # endif } if ( sqlite3IndexedByLookup ( pParse , pFrom ) ) { return WRC_Abort ; } } <S2SV_StartBug> if ( db -> mallocFailed || sqliteProcessJoin ( pParse , p ) ) { <S2SV_EndBug> return WRC_Abort ; } for ( k = 0 ; k < pEList -> nExpr ; k ++ ) { pE = pEList -> a [ k ] . pExpr ; if ( pE -> op == TK_ASTERISK ) break ; assert ( pE -> op != TK_DOT || pE -> pRight != 0 ) ; assert ( pE -> op != TK_DOT || ( pE -> pLeft != 0 && pE -> pLeft -> op == TK_ID ) ) ; if ( pE -> op == TK_DOT && pE -> pRight -> op == TK_ASTERISK ) break ; elistFlags |= pE -> flags ; } if ( k < pEList -> nExpr ) { struct ExprList_item * a = pEList -> a ; ExprList * pNew = 0 ; int flags = pParse -> db -> flags ; int longNames = ( flags & SQLITE_FullColNames ) != 0 && ( flags & SQLITE_ShortColNames ) == 0 ; for ( k = 0 ; k < pEList -> nExpr ; k ++ ) { pE = a [ k ] . pExpr ; elistFlags |= pE -> flags ; pRight = pE -> pRight ; assert ( pE -> op != TK_DOT || pRight != 0 ) ; if ( pE -> op != TK_ASTERISK && ( pE -> op != TK_DOT || pRight -> op != TK_ASTERISK ) ) { pNew = sqlite3ExprListAppend ( pParse , pNew , a [ k ] . pExpr ) ; if ( pNew ) { pNew -> a [ pNew -> nExpr - 1 ] . zName = a [ k ] . zName ; pNew -> a [ pNew -> nExpr - 1 ] . zSpan = a [ k ] . zSpan ; a [ k ] . zName = 0 ; a [ k ] . zSpan = 0 ; } a [ k ] . pExpr = 0 ; } else { int tableSeen = 0 ; char * zTName = 0 ; if ( pE -> op == TK_DOT ) { assert ( pE -> pLeft != 0 ) ; assert ( ! ExprHasProperty ( pE -> pLeft , EP_IntValue ) ) ; zTName = pE -> pLeft -> u . zToken ; } for ( i = 0 , pFrom = pTabList -> a ; i < pTabList -> nSrc ; i ++ , pFrom ++ ) { Table * pTab = pFrom -> pTab ; Select * pSub = pFrom -> pSelect ; char * zTabName = pFrom -> zAlias ; const char * zSchemaName = 0 ; int iDb ; if ( zTabName == 0 ) { zTabName = pTab -> zName ; } if ( db -> mallocFailed ) break ; if ( pSub == 0 || ( pSub -> selFlags & SF_NestedFrom ) == 0 ) { pSub = 0 ; if ( zTName && sqlite3StrICmp ( zTName , zTabName ) != 0 ) { continue ; } iDb = sqlite3SchemaToIndex ( db , pTab -> pSchema ) ; zSchemaName = iDb >= 0 ? db -> aDb [ iDb ] . zDbSName : \"*\" ; } for ( j = 0 ; j < pTab -> nCol ; j ++ ) { char * zName = pTab -> aCol [ j ] . zName ; char * zColname ; char * zToFree ; Token sColname ; assert ( zName ) ; if ( zTName && pSub && sqlite3MatchSpanName ( pSub -> pEList -> a [ j ] . zSpan , 0 , zTName , 0 ) == 0 ) { continue ; } if ( ( p -> selFlags & SF_IncludeHidden ) == 0 && IsHiddenColumn ( & pTab -> aCol [ j ] ) ) { continue ; } tableSeen = 1 ; if ( i > 0 && zTName == 0 ) { if ( ( pFrom -> fg . jointype & JT_NATURAL ) != 0 && tableAndColumnIndex ( pTabList , i , zName , 0 , 0 ) ) { continue ; } if ( sqlite3IdListIndex ( pFrom -> pUsing , zName ) >= 0 ) { continue ; } } pRight = sqlite3Expr ( db , TK_ID , zName ) ; zColname = zName ; zToFree = 0 ; if ( longNames || pTabList -> nSrc > 1 ) { Expr * pLeft ; pLeft = sqlite3Expr ( db , TK_ID , zTabName ) ; pExpr = sqlite3PExpr ( pParse , TK_DOT , pLeft , pRight ) ; if ( zSchemaName ) { pLeft = sqlite3Expr ( db , TK_ID , zSchemaName ) ; pExpr = sqlite3PExpr ( pParse , TK_DOT , pLeft , pExpr ) ; } if ( longNames ) { zColname = sqlite3MPrintf ( db , \"%s.%s\" , zTabName , zName ) ; zToFree = zColname ; } } else { pExpr = pRight ; } pNew = sqlite3ExprListAppend ( pParse , pNew , pExpr ) ; sqlite3TokenInit ( & sColname , zColname ) ; sqlite3ExprListSetName ( pParse , pNew , & sColname , 0 ) ; if ( pNew && ( p -> selFlags & SF_NestedFrom ) != 0 ) { struct ExprList_item * pX = & pNew -> a [ pNew -> nExpr - 1 ] ; if ( pSub ) { pX -> zSpan = sqlite3DbStrDup ( db , pSub -> pEList -> a [ j ] . zSpan ) ; testcase ( pX -> zSpan == 0 ) ; } else { pX -> zSpan = sqlite3MPrintf ( db , \"%s.%s.%s\" , zSchemaName , zTabName , zColname ) ; testcase ( pX -> zSpan == 0 ) ; } pX -> bSpanIsTab = 1 ; } sqlite3DbFree ( db , zToFree ) ; } } if ( ! tableSeen ) { if ( zTName ) { sqlite3ErrorMsg ( pParse , \"no<S2SV_blank>such<S2SV_blank>table:<S2SV_blank>%s\" , zTName ) ; } else { sqlite3ErrorMsg ( pParse , \"no<S2SV_blank>tables<S2SV_blank>specified\" ) ; } } } } sqlite3ExprListDelete ( db , pEList ) ; p -> pEList = pNew ; } if ( p -> pEList ) { if ( p -> pEList -> nExpr > db -> aLimit [ SQLITE_LIMIT_COLUMN ] ) { sqlite3ErrorMsg ( pParse , \"too<S2SV_blank>many<S2SV_blank>columns<S2SV_blank>in<S2SV_blank>result<S2SV_blank>set\" ) ; return WRC_Abort ; } if ( ( elistFlags & ( EP_HasFunc | EP_Subquery ) ) != 0 ) { p -> selFlags |= SF_ComplexResult ; } } return WRC_Continue ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( pParse -> nErr ||\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-000 static int em_sysexit ( struct x86_emulate_ctxt * ctxt ) { const struct x86_emulate_ops * ops = ctxt -> ops ; struct desc_struct cs , ss ; <S2SV_StartBug> u64 msr_data ; <S2SV_EndBug> int usermode ; u16 cs_sel = 0 , ss_sel = 0 ; if ( ctxt -> mode == X86EMUL_MODE_REAL || ctxt -> mode == X86EMUL_MODE_VM86 ) return emulate_gp ( ctxt , 0 ) ; setup_syscalls_segments ( ctxt , & cs , & ss ) ; if ( ( ctxt -> rex_prefix & 0x8 ) != 0x0 ) usermode = X86EMUL_MODE_PROT64 ; else usermode = X86EMUL_MODE_PROT32 ; <S2SV_StartBug> cs . dpl = 3 ; <S2SV_EndBug> ss . dpl = 3 ; ops -> get_msr ( ctxt , MSR_IA32_SYSENTER_CS , & msr_data ) ; switch ( usermode ) { case X86EMUL_MODE_PROT32 : cs_sel = ( u16 ) ( msr_data + 16 ) ; if ( ( msr_data & 0xfffc ) == 0x0 ) return emulate_gp ( ctxt , 0 ) ; ss_sel = ( u16 ) ( msr_data + 24 ) ; break ; case X86EMUL_MODE_PROT64 : cs_sel = ( u16 ) ( msr_data + 32 ) ; if ( msr_data == 0x0 ) return emulate_gp ( ctxt , 0 ) ; ss_sel = cs_sel + 8 ; cs . d = 0 ; cs . l = 1 ; <S2SV_StartBug> break ; <S2SV_EndBug> } cs_sel |= SELECTOR_RPL_MASK ; ss_sel |= SELECTOR_RPL_MASK ; ops -> set_segment ( ctxt , cs_sel , & cs , 0 , VCPU_SREG_CS ) ; ops -> set_segment ( ctxt , ss_sel , & ss , 0 , VCPU_SREG_SS ) ; <S2SV_StartBug> ctxt -> _eip = reg_read ( ctxt , VCPU_REGS_RDX ) ; <S2SV_EndBug> <S2SV_StartBug> * reg_write ( ctxt , VCPU_REGS_RSP ) = reg_read ( ctxt , VCPU_REGS_RCX ) ; <S2SV_EndBug> return X86EMUL_CONTINUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; u64 msr_data , rcx , rdx <S2SV_ModStart> = X86EMUL_MODE_PROT32 ; rcx = reg_read ( ctxt , VCPU_REGS_RCX ) ; rdx = reg_read ( ctxt , VCPU_REGS_RDX ) ; <S2SV_ModStart> = 1 ; if ( is_noncanonical_address ( rcx ) || is_noncanonical_address ( rdx ) ) return emulate_gp ( ctxt , 0 ) ; <S2SV_ModStart> -> _eip = rdx <S2SV_ModEnd> ; * reg_write <S2SV_ModStart> VCPU_REGS_RSP ) = rcx <S2SV_ModEnd> ; return X86EMUL_CONTINUE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6346\n\n```\nCWE-362 static int fanout_add ( struct sock * sk , u16 id , u16 type_flags ) { <S2SV_StartBug> struct packet_sock * po = pkt_sk ( sk ) ; <S2SV_EndBug> struct packet_fanout * f , * match ; u8 type = type_flags & 0xff ; u8 flags = type_flags >> 8 ; int err ; switch ( type ) { case PACKET_FANOUT_ROLLOVER : if ( type_flags & PACKET_FANOUT_FLAG_ROLLOVER ) return - EINVAL ; case PACKET_FANOUT_HASH : case PACKET_FANOUT_LB : case PACKET_FANOUT_CPU : case PACKET_FANOUT_RND : case PACKET_FANOUT_QM : case PACKET_FANOUT_CBPF : case PACKET_FANOUT_EBPF : break ; default : return - EINVAL ; } <S2SV_StartBug> if ( ! po -> running ) <S2SV_EndBug> <S2SV_StartBug> return - EINVAL ; <S2SV_EndBug> if ( po -> fanout ) <S2SV_StartBug> return - EALREADY ; <S2SV_EndBug> if ( type == PACKET_FANOUT_ROLLOVER || ( type_flags & PACKET_FANOUT_FLAG_ROLLOVER ) ) { <S2SV_StartBug> po -> rollover = kzalloc ( sizeof ( * po -> rollover ) , GFP_KERNEL ) ; <S2SV_EndBug> <S2SV_StartBug> if ( ! po -> rollover ) <S2SV_EndBug> return - ENOMEM ; <S2SV_StartBug> atomic_long_set ( & po -> rollover -> num , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> atomic_long_set ( & po -> rollover -> num_huge , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> atomic_long_set ( & po -> rollover -> num_failed , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> mutex_lock ( & fanout_mutex ) ; match = NULL ; list_for_each_entry ( f , & fanout_list , list ) { if ( f -> id == id && read_pnet ( & f -> net ) == sock_net ( sk ) ) { match = f ; break ; } } err = - EINVAL ; if ( match && match -> flags != flags ) goto out ; if ( ! match ) { err = - ENOMEM ; match = kzalloc ( sizeof ( * match ) , GFP_KERNEL ) ; if ( ! match ) goto out ; write_pnet ( & match -> net , sock_net ( sk ) ) ; match -> id = id ; match -> type = type ; match -> flags = flags ; INIT_LIST_HEAD ( & match -> list ) ; spin_lock_init ( & match -> lock ) ; atomic_set ( & match -> sk_ref , 0 ) ; fanout_init_data ( match ) ; match -> prot_hook . type = po -> prot_hook . type ; match -> prot_hook . dev = po -> prot_hook . dev ; match -> prot_hook . func = packet_rcv_fanout ; match -> prot_hook . af_packet_priv = match ; match -> prot_hook . id_match = match_fanout_group ; dev_add_pack ( & match -> prot_hook ) ; list_add ( & match -> list , & fanout_list ) ; } err = - EINVAL ; if ( match -> type == type && match -> prot_hook . type == po -> prot_hook . type && match -> prot_hook . dev == po -> prot_hook . dev ) { err = - ENOSPC ; if ( atomic_read ( & match -> sk_ref ) < PACKET_FANOUT_MAX ) { __dev_remove_pack ( & po -> prot_hook ) ; po -> fanout = match ; atomic_inc ( & match -> sk_ref ) ; __fanout_link ( sk , po ) ; err = 0 ; } } out : <S2SV_StartBug> mutex_unlock ( & fanout_mutex ) ; <S2SV_EndBug> <S2SV_StartBug> if ( err ) { <S2SV_EndBug> kfree ( po -> rollover ) ; po -> rollover = NULL ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct packet_rollover * rollover = NULL ; struct <S2SV_ModStart> EINVAL ; } mutex_lock ( & fanout_mutex ) ; err = - EINVAL ; <S2SV_ModStart> -> running ) goto out ; err = - EALREADY <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> fanout ) goto out <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) ) { err = - ENOMEM ; <S2SV_ModEnd> rollover = kzalloc <S2SV_ModStart> sizeof ( * <S2SV_ModEnd> rollover ) , <S2SV_ModStart> if ( ! rollover ) goto out <S2SV_ModEnd> ; atomic_long_set ( <S2SV_ModStart> atomic_long_set ( & <S2SV_ModEnd> rollover -> num <S2SV_ModStart> atomic_long_set ( & <S2SV_ModEnd> rollover -> num_huge <S2SV_ModStart> atomic_long_set ( & <S2SV_ModEnd> rollover -> num_failed <S2SV_ModStart> 0 ) ; po -> rollover = rollover ; } <S2SV_ModEnd> match = NULL <S2SV_ModStart> } out : if ( err && rollover ) { kfree ( rollover ) ; po -> rollover = NULL ; } <S2SV_ModStart> fanout_mutex ) ; <S2SV_ModEnd> return err ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-5336\n\n```\nCWE-20 static inline int mk_vhost_fdt_open ( int id , unsigned int hash , struct session_request * sr ) { int i ; int fd ; struct vhost_fdt_hash_table * ht = NULL ; struct vhost_fdt_hash_chain * hc ; if ( config -> fdt == MK_FALSE ) { return open ( sr -> real_path . data , sr -> file_info . flags_read_only ) ; } ht = mk_vhost_fdt_table_lookup ( id , sr -> host_conf ) ; if ( mk_unlikely ( ! ht ) ) { return open ( sr -> real_path . data , sr -> file_info . flags_read_only ) ; } hc = mk_vhost_fdt_chain_lookup ( hash , ht ) ; if ( hc ) { hc -> readers ++ ; return hc -> fd ; } fd = open ( sr -> real_path . data , sr -> file_info . flags_read_only ) ; if ( fd == - 1 ) { return - 1 ; } if ( ht -> av_slots <= 0 ) { return fd ; } for ( i = 0 ; i < VHOST_FDT_HASHTABLE_CHAINS ; i ++ ) { hc = & ht -> chain [ i ] ; if ( hc -> fd == - 1 ) { hc -> fd = fd ; hc -> hash = hash ; hc -> readers ++ ; ht -> av_slots -- ; sr -> vhost_fdt_id = id ; sr -> vhost_fdt_hash = hash ; <S2SV_StartBug> return fd ; <S2SV_EndBug> } } return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = hash ; sr -> fd_is_fdt = MK_TRUE ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int vp8_denoiser_allocate ( VP8_DENOISER * denoiser , int width , int height ) <S2SV_EndBug> { int i ; <S2SV_StartBug> assert ( denoiser ) ; <S2SV_EndBug> for ( i = 0 ; i < MAX_REF_FRAMES ; i ++ ) { denoiser -> yv12_running_avg [ i ] . flags = 0 ; if ( vp8_yv12_alloc_frame_buffer ( & ( denoiser -> yv12_running_avg [ i ] ) , width , height , VP8BORDERINPIXELS ) < 0 ) { vp8_denoiser_free ( denoiser ) ; return 1 ; } <S2SV_StartBug> vpx_memset ( denoiser -> yv12_running_avg [ i ] . buffer_alloc , 0 , <S2SV_EndBug> denoiser -> yv12_running_avg [ i ] . frame_size ) ; } denoiser -> yv12_mc_running_avg . flags = 0 ; if ( vp8_yv12_alloc_frame_buffer ( & ( denoiser -> yv12_mc_running_avg ) , width , height , VP8BORDERINPIXELS ) < 0 ) { vp8_denoiser_free ( denoiser ) ; return 1 ; } <S2SV_StartBug> vpx_memset ( denoiser -> yv12_mc_running_avg . buffer_alloc , 0 , <S2SV_EndBug> denoiser -> yv12_mc_running_avg . frame_size ) ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , int height , int num_mb_rows , int num_mb_cols , int mode <S2SV_ModStart> ( denoiser ) ; denoiser -> num_mb_cols = num_mb_cols <S2SV_ModStart> 1 ; } memset <S2SV_ModEnd> ( denoiser -> <S2SV_ModStart> 1 ; } memset <S2SV_ModEnd> ( denoiser -> <S2SV_ModStart> frame_size ) ; if ( vp8_yv12_alloc_frame_buffer ( & denoiser -> yv12_last_source , width , height , VP8BORDERINPIXELS ) < 0 ) { vp8_denoiser_free ( denoiser ) ; return 1 ; } memset ( denoiser -> yv12_last_source . buffer_alloc , 0 , denoiser -> yv12_last_source . frame_size ) ; denoiser -> denoise_state = vpx_calloc ( ( num_mb_rows * num_mb_cols ) , 1 ) ; memset ( denoiser -> denoise_state , 0 , ( num_mb_rows * num_mb_cols ) ) ; vp8_denoiser_set_parameters ( denoiser , mode ) ; denoiser -> nmse_source_diff = 0 ; denoiser -> nmse_source_diff_count = 0 ; denoiser -> qp_avg = 0 ; denoiser -> qp_threshold_up = 80 ; denoiser -> qp_threshold_down = 128 ; denoiser -> bitrate_threshold = 400000 ; denoiser -> threshold_aggressive_mode = 80 ; if ( width * height > 1280 * 720 ) { denoiser -> bitrate_threshold = 3000000 ; denoiser -> threshold_aggressive_mode = 200 ; } else if ( width * height > 960 * 540 ) { denoiser -> bitrate_threshold = 1200000 ; denoiser -> threshold_aggressive_mode = 120 ; } else if ( width * height > 640 * 480 ) { denoiser -> bitrate_threshold = 600000 ; denoiser -> threshold_aggressive_mode = 100 ; } return <S2SV_ModEnd> 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0830\n\n```\nCWE-119 void btif_config_flush ( void ) { assert ( config != NULL ) ; assert ( alarm_timer != NULL ) ; alarm_cancel ( alarm_timer ) ; <S2SV_StartBug> pthread_mutex_lock ( & lock ) ; <S2SV_EndBug> config_save ( config , CONFIG_FILE_PATH ) ; pthread_mutex_unlock ( & lock ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> alarm_timer ) ; btif_config_write ( <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3136\n\n```\nCWE-000 static int mct_u232_port_probe ( struct usb_serial_port * port ) { <S2SV_StartBug> struct mct_u232_private * priv ; <S2SV_EndBug> priv = kzalloc ( sizeof ( * priv ) , GFP_KERNEL ) ; if ( ! priv ) return - ENOMEM ; <S2SV_StartBug> priv -> read_urb = port -> serial -> port [ 1 ] -> interrupt_in_urb ; <S2SV_EndBug> priv -> read_urb -> context = port ; spin_lock_init ( & priv -> lock ) ; usb_set_serial_port_data ( port , priv ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { struct usb_serial * serial = port -> serial ; struct <S2SV_ModStart> * priv ; if ( ! serial -> port [ 1 ] || ! serial -> port [ 1 ] -> interrupt_in_urb ) { dev_err ( & port -> dev , \"expected<S2SV_blank>endpoint<S2SV_blank>missing\\\\n\" ) ; return - ENODEV ; } <S2SV_ModStart> -> read_urb = <S2SV_ModEnd> serial -> port\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8858\n\n```\nCWE-399 int kex_input_kexinit ( int type , u_int32_t seq , void * ctxt ) { struct ssh * ssh = ctxt ; struct kex * kex = ssh -> kex ; const u_char * ptr ; u_int i ; size_t dlen ; int r ; debug ( \"SSH2_MSG_KEXINIT<S2SV_blank>received\" ) ; if ( kex == NULL ) return SSH_ERR_INVALID_ARGUMENT ; <S2SV_StartBug> ptr = sshpkt_ptr ( ssh , & dlen ) ; <S2SV_EndBug> if ( ( r = sshbuf_put ( kex -> peer , ptr , dlen ) ) != 0 ) return r ; for ( i = 0 ; i < KEX_COOKIE_LEN ; i ++ ) if ( ( r = sshpkt_get_u8 ( ssh , NULL ) ) != 0 ) return r ; for ( i = 0 ; i < PROPOSAL_MAX ; i ++ ) if ( ( r = sshpkt_get_string ( ssh , NULL , NULL ) ) != 0 ) return r ; if ( ( r = sshpkt_get_u8 ( ssh , NULL ) ) != 0 || ( r = sshpkt_get_u32 ( ssh , NULL ) ) != 0 || ( r = sshpkt_get_end ( ssh ) ) != 0 ) return r ; if ( ! ( kex -> flags & KEX_INIT_SENT ) ) if ( ( r = kex_send_kexinit ( ssh ) ) != 0 ) return r ; if ( ( r = kex_choose_conf ( ssh ) ) != 0 ) return r ; if ( kex -> kex_type < KEX_MAX && kex -> kex [ kex -> kex_type ] != NULL ) return ( kex -> kex [ kex -> kex_type ] ) ( ssh ) ; return SSH_ERR_INTERNAL_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return SSH_ERR_INVALID_ARGUMENT ; ssh_dispatch_set ( ssh , SSH2_MSG_KEXINIT , NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8675\n\n```\nCWE-476 static int mpeg4video_probe ( AVProbeData * probe_packet ) { uint32_t temp_buffer = - 1 ; int VO = 0 , VOL = 0 , VOP = 0 , VISO = 0 , res = 0 ; int i ; for ( i = 0 ; i < probe_packet -> buf_size ; i ++ ) { temp_buffer = ( temp_buffer << 8 ) + probe_packet -> buf [ i ] ; <S2SV_StartBug> if ( ( temp_buffer & 0xffffff00 ) != 0x100 ) <S2SV_EndBug> continue ; if ( temp_buffer == VOP_START_CODE ) VOP ++ ; else if ( temp_buffer == VISUAL_OBJECT_START_CODE ) VISO ++ ; <S2SV_StartBug> else if ( temp_buffer < 0x120 ) <S2SV_EndBug> VO ++ ; <S2SV_StartBug> else if ( temp_buffer < 0x130 ) <S2SV_EndBug> VOL ++ ; else if ( ! ( 0x1AF < temp_buffer && temp_buffer < 0x1B7 ) && ! ( 0x1B9 < temp_buffer && temp_buffer < 0x1C4 ) ) res ++ ; } if ( VOP >= VISO && VOP >= VOL && VO >= VOL && VOL > 0 && res == 0 ) return AVPROBE_SCORE_EXTENSION ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( temp_buffer & 0xfffffe00 ) continue ; if ( temp_buffer < 2 <S2SV_ModEnd> ) continue ; <S2SV_ModStart> if ( temp_buffer >= 0x100 && temp_buffer <S2SV_ModStart> else if ( temp_buffer >= 0x120 &&\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6001\n\n```\nCWE-362 SYSCALL_DEFINE5 ( perf_event_open , struct perf_event_attr __user * , attr_uptr , pid_t , pid , int , cpu , int , group_fd , unsigned long , flags ) { struct perf_event * group_leader = NULL , * output_event = NULL ; struct perf_event * event , * sibling ; struct perf_event_attr attr ; struct perf_event_context * ctx , * uninitialized_var ( gctx ) ; struct file * event_file = NULL ; struct fd group = { NULL , 0 } ; struct task_struct * task = NULL ; struct pmu * pmu ; int event_fd ; int move_group = 0 ; int err ; int f_flags = O_RDWR ; int cgroup_fd = - 1 ; if ( flags & ~ PERF_FLAG_ALL ) return - EINVAL ; err = perf_copy_attr ( attr_uptr , & attr ) ; if ( err ) return err ; if ( ! attr . exclude_kernel ) { if ( perf_paranoid_kernel ( ) && ! capable ( CAP_SYS_ADMIN ) ) return - EACCES ; } if ( attr . freq ) { if ( attr . sample_freq > sysctl_perf_event_sample_rate ) return - EINVAL ; } else { if ( attr . sample_period & ( 1ULL << 63 ) ) return - EINVAL ; } if ( ! attr . sample_max_stack ) attr . sample_max_stack = sysctl_perf_event_max_stack ; if ( ( flags & PERF_FLAG_PID_CGROUP ) && ( pid == - 1 || cpu == - 1 ) ) return - EINVAL ; if ( flags & PERF_FLAG_FD_CLOEXEC ) f_flags |= O_CLOEXEC ; event_fd = get_unused_fd_flags ( f_flags ) ; if ( event_fd < 0 ) return event_fd ; if ( group_fd != - 1 ) { err = perf_fget_light ( group_fd , & group ) ; if ( err ) goto err_fd ; group_leader = group . file -> private_data ; if ( flags & PERF_FLAG_FD_OUTPUT ) output_event = group_leader ; if ( flags & PERF_FLAG_FD_NO_GROUP ) group_leader = NULL ; } if ( pid != - 1 && ! ( flags & PERF_FLAG_PID_CGROUP ) ) { task = find_lively_task_by_vpid ( pid ) ; if ( IS_ERR ( task ) ) { err = PTR_ERR ( task ) ; goto err_group_fd ; } } if ( task && group_leader && group_leader -> attr . inherit != attr . inherit ) { err = - EINVAL ; goto err_task ; } get_online_cpus ( ) ; if ( task ) { err = mutex_lock_interruptible ( & task -> signal -> cred_guard_mutex ) ; if ( err ) goto err_cpus ; err = - EACCES ; if ( ! ptrace_may_access ( task , PTRACE_MODE_READ_REALCREDS ) ) goto err_cred ; } if ( flags & PERF_FLAG_PID_CGROUP ) cgroup_fd = pid ; event = perf_event_alloc ( & attr , cpu , task , group_leader , NULL , NULL , NULL , cgroup_fd ) ; if ( IS_ERR ( event ) ) { err = PTR_ERR ( event ) ; goto err_cred ; } if ( is_sampling_event ( event ) ) { if ( event -> pmu -> capabilities & PERF_PMU_CAP_NO_INTERRUPT ) { err = - EOPNOTSUPP ; goto err_alloc ; } } pmu = event -> pmu ; if ( attr . use_clockid ) { err = perf_event_set_clock ( event , attr . clockid ) ; if ( err ) goto err_alloc ; } if ( pmu -> task_ctx_nr == perf_sw_context ) event -> event_caps |= PERF_EV_CAP_SOFTWARE ; if ( group_leader && ( is_software_event ( event ) != is_software_event ( group_leader ) ) ) { if ( is_software_event ( event ) ) { pmu = group_leader -> pmu ; } else if ( is_software_event ( group_leader ) && ( group_leader -> group_caps & PERF_EV_CAP_SOFTWARE ) ) { move_group = 1 ; } } ctx = find_get_context ( pmu , task , event ) ; if ( IS_ERR ( ctx ) ) { err = PTR_ERR ( ctx ) ; goto err_alloc ; } if ( ( pmu -> capabilities & PERF_PMU_CAP_EXCLUSIVE ) && group_leader ) { err = - EBUSY ; goto err_context ; } if ( group_leader ) { err = - EINVAL ; if ( group_leader -> group_leader != group_leader ) goto err_context ; if ( group_leader -> clock != event -> clock ) goto err_context ; if ( move_group ) { if ( group_leader -> ctx -> task != ctx -> task ) goto err_context ; if ( group_leader -> cpu != event -> cpu ) goto err_context ; } else { if ( group_leader -> ctx != ctx ) goto err_context ; } if ( attr . exclusive || attr . pinned ) goto err_context ; } if ( output_event ) { err = perf_event_set_output ( event , output_event ) ; if ( err ) goto err_context ; } event_file = anon_inode_getfile ( \"[perf_event]\" , & perf_fops , event , f_flags ) ; if ( IS_ERR ( event_file ) ) { err = PTR_ERR ( event_file ) ; event_file = NULL ; goto err_context ; } if ( move_group ) { <S2SV_StartBug> gctx = group_leader -> ctx ; <S2SV_EndBug> mutex_lock_double ( & gctx -> mutex , & ctx -> mutex ) ; if ( gctx -> task == TASK_TOMBSTONE ) { err = - ESRCH ; goto err_locked ; } <S2SV_StartBug> } else { <S2SV_EndBug> mutex_lock ( & ctx -> mutex ) ; } if ( ctx -> task == TASK_TOMBSTONE ) { err = - ESRCH ; goto err_locked ; } if ( ! perf_event_validate_size ( event ) ) { err = - E2BIG ; goto err_locked ; } if ( ! exclusive_event_installable ( event , ctx ) ) { WARN_ON_ONCE ( move_group ) ; err = - EBUSY ; goto err_locked ; } WARN_ON_ONCE ( ctx -> parent_ctx ) ; if ( move_group ) { perf_remove_from_context ( group_leader , 0 ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_remove_from_context ( sibling , 0 ) ; put_ctx ( gctx ) ; } synchronize_rcu ( ) ; list_for_each_entry ( sibling , & group_leader -> sibling_list , group_entry ) { perf_event__state_init ( sibling ) ; perf_install_in_context ( ctx , sibling , sibling -> cpu ) ; get_ctx ( ctx ) ; } perf_event__state_init ( group_leader ) ; perf_install_in_context ( ctx , group_leader , group_leader -> cpu ) ; get_ctx ( ctx ) ; put_ctx ( gctx ) ; } perf_event__header_size ( event ) ; perf_event__id_header_size ( event ) ; event -> owner = current ; perf_install_in_context ( ctx , event , event -> cpu ) ; perf_unpin_context ( ctx ) ; if ( move_group ) <S2SV_StartBug> mutex_unlock ( & gctx -> mutex ) ; <S2SV_EndBug> mutex_unlock ( & ctx -> mutex ) ; if ( task ) { mutex_unlock ( & task -> signal -> cred_guard_mutex ) ; put_task_struct ( task ) ; } put_online_cpus ( ) ; mutex_lock ( & current -> perf_event_mutex ) ; list_add_tail ( & event -> owner_entry , & current -> perf_event_list ) ; mutex_unlock ( & current -> perf_event_mutex ) ; fdput ( group ) ; fd_install ( event_fd , event_file ) ; return event_fd ; err_locked : if ( move_group ) <S2SV_StartBug> mutex_unlock ( & gctx -> mutex ) ; <S2SV_EndBug> mutex_unlock ( & ctx -> mutex ) ; fput ( event_file ) ; err_context : perf_unpin_context ( ctx ) ; put_ctx ( ctx ) ; err_alloc : if ( ! event_file ) free_event ( event ) ; err_cred : if ( task ) mutex_unlock ( & task -> signal -> cred_guard_mutex ) ; err_cpus : put_online_cpus ( ) ; err_task : if ( task ) put_task_struct ( task ) ; err_group_fd : fdput ( group ) ; err_fd : put_unused_fd ( event_fd ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { gctx = __perf_event_ctx_lock_double ( group_leader , ctx <S2SV_ModEnd> ) ; if <S2SV_ModStart> err_locked ; } if ( ! ( group_leader -> group_caps & PERF_EV_CAP_SOFTWARE ) ) { if ( gctx != ctx ) { err = - EINVAL ; goto err_locked ; } else { perf_event_ctx_unlock ( group_leader , gctx ) ; move_group = 0 ; } } <S2SV_ModStart> ( move_group ) perf_event_ctx_unlock ( group_leader , gctx <S2SV_ModEnd> ) ; mutex_unlock <S2SV_ModStart> ( move_group ) perf_event_ctx_unlock ( group_leader , gctx <S2SV_ModEnd> ) ; mutex_unlock\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int em_jmp_far ( struct x86_emulate_ctxt * ctxt ) { int rc ; <S2SV_StartBug> unsigned short sel ; <S2SV_EndBug> memcpy ( & sel , ctxt -> src . valptr + ctxt -> op_bytes , 2 ) ; <S2SV_StartBug> rc = load_segment_descriptor ( ctxt , sel , VCPU_SREG_CS ) ; <S2SV_EndBug> if ( rc != X86EMUL_CONTINUE ) return rc ; <S2SV_StartBug> ctxt -> _eip = 0 ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & ctxt -> _eip , ctxt -> src . valptr , ctxt -> op_bytes ) ; <S2SV_EndBug> <S2SV_StartBug> return X86EMUL_CONTINUE ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> unsigned short sel , old_sel ; struct desc_struct old_desc , new_desc ; const struct x86_emulate_ops * ops = ctxt -> ops ; u8 cpl = ctxt -> ops -> cpl ( ctxt ) ; if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) ops -> get_segment ( ctxt , & old_sel , & old_desc , NULL , VCPU_SREG_CS ) <S2SV_ModStart> ; rc = __load_segment_descriptor <S2SV_ModEnd> ( ctxt , <S2SV_ModStart> sel , VCPU_SREG_CS , cpl , false , & new_desc <S2SV_ModStart> return rc ; rc = assign_eip_far ( ctxt <S2SV_ModEnd> , ctxt -> <S2SV_ModStart> -> src . val , new_desc . l ) ; if ( rc != X86EMUL_CONTINUE ) { WARN_ON ( ! ctxt -> mode != X86EMUL_MODE_PROT64 ) ; ops -> set_segment ( ctxt , old_sel , & old_desc , 0 , VCPU_SREG_CS <S2SV_ModEnd> ) ; return <S2SV_ModStart> ) ; return rc ; } return rc <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-682(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8326\n\n```\nCWE-682 static int find_low_bit ( unsigned int x ) { int i ; for ( i = 0 ; i <= 31 ; i ++ ) { <S2SV_StartBug> if ( x & ( 1 << i ) ) return i ; <S2SV_EndBug> } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> x & ( 1U << ( unsigned int ) <S2SV_ModEnd> i ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0375\n\n```\nCWE-617 int connection_exit_begin_conn ( cell_t * cell , circuit_t * circ ) { edge_connection_t * n_stream ; relay_header_t rh ; char * address = NULL ; uint16_t port = 0 ; <S2SV_StartBug> or_circuit_t * or_circ = NULL ; <S2SV_EndBug> const or_options_t * options = get_options ( ) ; begin_cell_t bcell ; int rv ; uint8_t end_reason = 0 ; assert_circuit_ok ( circ ) ; <S2SV_StartBug> if ( ! CIRCUIT_IS_ORIGIN ( circ ) ) <S2SV_EndBug> <S2SV_StartBug> or_circ = TO_OR_CIRCUIT ( circ ) ; <S2SV_EndBug> relay_header_unpack ( & rh , cell -> payload ) ; if ( rh . length > RELAY_PAYLOAD_SIZE ) return - END_CIRC_REASON_TORPROTOCOL ; if ( ! server_mode ( options ) && circ -> purpose != CIRCUIT_PURPOSE_S_REND_JOINED ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Relay<S2SV_blank>begin<S2SV_blank>cell<S2SV_blank>at<S2SV_blank>non-server.<S2SV_blank>Closing.\" ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , END_STREAM_REASON_EXITPOLICY , NULL ) ; return 0 ; } rv = begin_cell_parse ( cell , & bcell , & end_reason ) ; if ( rv < - 1 ) { return - END_CIRC_REASON_TORPROTOCOL ; } else if ( rv == - 1 ) { tor_free ( bcell . address ) ; <S2SV_StartBug> relay_send_end_cell_from_edge ( rh . stream_id , circ , end_reason , NULL ) ; <S2SV_EndBug> return 0 ; } if ( ! bcell . is_begindir ) { address = bcell . address ; port = bcell . port ; if ( or_circ && or_circ -> p_chan ) { if ( ! options -> AllowSingleHopExits && ( or_circ -> is_first_hop || ( ! connection_or_digest_is_known_relay ( or_circ -> p_chan -> identity_digest ) && should_refuse_unknown_exits ( options ) ) ) ) { log_fn ( LOG_PROTOCOL_WARN , LD_PROTOCOL , \"Attempt<S2SV_blank>by<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>open<S2SV_blank>a<S2SV_blank>stream<S2SV_blank>%s.<S2SV_blank>Closing.\" , safe_str ( channel_get_canonical_remote_descr ( or_circ -> p_chan ) ) , or_circ -> is_first_hop ? \"on<S2SV_blank>first<S2SV_blank>hop<S2SV_blank>of<S2SV_blank>circuit\" : \"from<S2SV_blank>unknown<S2SV_blank>relay\" ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , or_circ -> is_first_hop ? END_STREAM_REASON_TORPROTOCOL : END_STREAM_REASON_MISC , NULL ) ; tor_free ( address ) ; return 0 ; } } } else if ( rh . command == RELAY_COMMAND_BEGIN_DIR ) { if ( ! directory_permits_begindir_requests ( options ) || circ -> purpose != CIRCUIT_PURPOSE_OR ) { relay_send_end_cell_from_edge ( rh . stream_id , circ , <S2SV_StartBug> END_STREAM_REASON_NOTDIRECTORY , NULL ) ; <S2SV_EndBug> return 0 ; } if ( or_circ && or_circ -> p_chan ) address = tor_strdup ( channel_get_actual_remote_address ( or_circ -> p_chan ) ) ; else address = tor_strdup ( \"127.0.0.1\" ) ; port = 1 ; } else { log_warn ( LD_BUG , \"Got<S2SV_blank>an<S2SV_blank>unexpected<S2SV_blank>command<S2SV_blank>%d\" , ( int ) rh . command ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , <S2SV_StartBug> END_STREAM_REASON_INTERNAL , NULL ) ; <S2SV_EndBug> return 0 ; } if ( ! options -> IPv6Exit ) { bcell . flags &= ~ BEGIN_FLAG_IPV6_PREFERRED ; if ( bcell . flags & BEGIN_FLAG_IPV4_NOT_OK ) { tor_free ( address ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , <S2SV_StartBug> END_STREAM_REASON_EXITPOLICY , NULL ) ; <S2SV_EndBug> return 0 ; } } log_debug ( LD_EXIT , \"Creating<S2SV_blank>new<S2SV_blank>exit<S2SV_blank>connection.\" ) ; n_stream = edge_connection_new ( CONN_TYPE_EXIT , AF_INET ) ; n_stream -> dirreq_id = circ -> dirreq_id ; n_stream -> base_ . purpose = EXIT_PURPOSE_CONNECT ; n_stream -> begincell_flags = bcell . flags ; n_stream -> stream_id = rh . stream_id ; n_stream -> base_ . port = port ; n_stream -> package_window = STREAMWINDOW_START ; n_stream -> deliver_window = STREAMWINDOW_START ; if ( circ -> purpose == CIRCUIT_PURPOSE_S_REND_JOINED ) { <S2SV_StartBug> origin_circuit_t * origin_circ = TO_ORIGIN_CIRCUIT ( circ ) ; <S2SV_EndBug> log_info ( LD_REND , \"begin<S2SV_blank>is<S2SV_blank>for<S2SV_blank>rendezvous.<S2SV_blank>configuring<S2SV_blank>stream.\" ) ; n_stream -> base_ . address = tor_strdup ( \"(rendezvous)\" ) ; n_stream -> base_ . state = EXIT_CONN_STATE_CONNECTING ; n_stream -> rend_data = rend_data_dup ( origin_circ -> rend_data ) ; tor_assert ( connection_edge_is_rendezvous_stream ( n_stream ) ) ; assert_circuit_ok ( circ ) ; const int r = rend_service_set_connection_addr_port ( n_stream , origin_circ ) ; if ( r < 0 ) { log_info ( LD_REND , \"Didn\\'t<S2SV_blank>find<S2SV_blank>rendezvous<S2SV_blank>service<S2SV_blank>(port<S2SV_blank>%d)\" , n_stream -> base_ . port ) ; relay_send_end_cell_from_edge ( rh . stream_id , circ , END_STREAM_REASON_DONE , <S2SV_StartBug> origin_circ -> cpath -> prev ) ; <S2SV_EndBug> connection_free ( TO_CONN ( n_stream ) ) ; tor_free ( address ) ; if ( r < - 1 ) return END_CIRC_AT_ORIGIN ; else return 0 ; } assert_circuit_ok ( circ ) ; log_debug ( LD_REND , \"Finished<S2SV_blank>assigning<S2SV_blank>addr/port\" ) ; n_stream -> cpath_layer = origin_circ -> cpath -> prev ; n_stream -> next_stream = origin_circ -> p_streams ; n_stream -> on_circuit = circ ; origin_circ -> p_streams = n_stream ; assert_circuit_ok ( circ ) ; origin_circ -> rend_data -> nr_streams ++ ; connection_exit_connect ( n_stream ) ; pathbias_mark_use_success ( origin_circ ) ; tor_free ( address ) ; return 0 ; } tor_strlower ( address ) ; n_stream -> base_ . address = address ; n_stream -> base_ . state = EXIT_CONN_STATE_RESOLVEFAILED ; if ( we_are_hibernating ( ) ) { relay_send_end_cell_from_edge ( rh . stream_id , circ , END_STREAM_REASON_HIBERNATING , NULL ) ; connection_free ( TO_CONN ( n_stream ) ) ; return 0 ; } n_stream -> on_circuit = circ ; if ( rh . command == RELAY_COMMAND_BEGIN_DIR ) { tor_addr_t tmp_addr ; tor_assert ( or_circ ) ; if ( or_circ -> p_chan && channel_get_addr_if_possible ( or_circ -> p_chan , & tmp_addr ) ) { tor_addr_copy ( & n_stream -> base_ . addr , & tmp_addr ) ; } return connection_exit_connect_dir ( n_stream ) ; } log_debug ( LD_EXIT , \"about<S2SV_blank>to<S2SV_blank>start<S2SV_blank>the<S2SV_blank>dns_resolve().\" ) ; switch ( dns_resolve ( n_stream ) ) { case 1 : assert_circuit_ok ( circ ) ; log_debug ( LD_EXIT , \"about<S2SV_blank>to<S2SV_blank>call<S2SV_blank>connection_exit_connect().\" ) ; connection_exit_connect ( n_stream ) ; return 0 ; case - 1 : relay_send_end_cell_from_edge ( rh . stream_id , circ , END_STREAM_REASON_RESOLVEFAILED , NULL ) ; break ; case 0 : assert_circuit_ok ( circ ) ; break ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> or_circuit_t * or_circ = NULL ; origin_circuit_t * origin_circ = NULL ; crypt_path_t * layer_hint <S2SV_ModStart> circ ) ) { <S2SV_ModStart> circ ) ; } else { tor_assert ( circ -> purpose == CIRCUIT_PURPOSE_S_REND_JOINED ) ; origin_circ = TO_ORIGIN_CIRCUIT ( circ ) ; layer_hint = origin_circ -> cpath -> prev ; } <S2SV_ModStart> , end_reason , layer_hint <S2SV_ModEnd> ) ; return <S2SV_ModStart> , END_STREAM_REASON_NOTDIRECTORY , layer_hint <S2SV_ModEnd> ) ; return <S2SV_ModStart> , END_STREAM_REASON_INTERNAL , layer_hint <S2SV_ModEnd> ) ; return <S2SV_ModStart> , END_STREAM_REASON_EXITPOLICY , layer_hint <S2SV_ModEnd> ) ; return <S2SV_ModStart> CIRCUIT_PURPOSE_S_REND_JOINED ) { tor_assert ( origin_circ <S2SV_ModEnd> ) ; log_info <S2SV_ModStart> , END_STREAM_REASON_DONE , layer_hint <S2SV_ModEnd> ) ; connection_free\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static void unix_copy_addr ( struct msghdr * msg , struct sock * sk ) { <S2SV_StartBug> struct unix_sock * u = unix_sk ( sk ) ; <S2SV_EndBug> msg -> msg_namelen = 0 ; if ( u -> addr ) { msg -> msg_namelen = u -> addr -> len ; memcpy ( msg -> msg_name , u -> addr -> name , u -> addr -> len ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sk ) <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15537\n\n```\nCWE-200 int xstateregs_set ( struct task_struct * target , const struct user_regset * regset , unsigned int pos , unsigned int count , const void * kbuf , const void __user * ubuf ) { struct fpu * fpu = & target -> thread . fpu ; struct xregs_state * xsave ; int ret ; if ( ! boot_cpu_has ( X86_FEATURE_XSAVE ) ) return - ENODEV ; if ( ( pos != 0 ) || ( count < fpu_user_xstate_size ) ) return - EFAULT ; xsave = & fpu -> state . xsave ; fpu__activate_fpstate_write ( fpu ) ; if ( boot_cpu_has ( X86_FEATURE_XSAVES ) ) { if ( kbuf ) ret = copy_kernel_to_xstate ( xsave , kbuf ) ; else ret = copy_user_to_xstate ( xsave , ubuf ) ; } else { ret = user_regset_copyin ( & pos , & count , & kbuf , & ubuf , xsave , 0 , - 1 ) ; <S2SV_StartBug> } <S2SV_EndBug> if ( ret ) fpstate_init ( & fpu -> state ) ; xsave -> i387 . mxcsr &= mxcsr_feature_mask ; xsave -> header . xfeatures &= xfeatures_mask ; memset ( & xsave -> header . reserved , 0 , 48 ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( ! ret && xsave -> header . xcomp_bv ) ret = - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 static int v9fs_xattr_set_acl ( const struct xattr_handler * handler , struct dentry * dentry , struct inode * inode , const char * name , const void * value , size_t size , int flags ) { int retval ; struct posix_acl * acl ; struct v9fs_session_info * v9ses ; v9ses = v9fs_dentry2v9ses ( dentry ) ; if ( ( v9ses -> flags & V9FS_ACCESS_MASK ) != V9FS_ACCESS_CLIENT ) return v9fs_xattr_set ( dentry , handler -> name , value , size , flags ) ; if ( S_ISLNK ( inode -> i_mode ) ) return - EOPNOTSUPP ; if ( ! inode_owner_or_capable ( inode ) ) return - EPERM ; if ( value ) { acl = posix_acl_from_xattr ( & init_user_ns , value , size ) ; if ( IS_ERR ( acl ) ) return PTR_ERR ( acl ) ; else if ( acl ) { retval = posix_acl_valid ( inode -> i_sb -> s_user_ns , acl ) ; if ( retval ) goto err_out ; } } else acl = NULL ; switch ( handler -> flags ) { case ACL_TYPE_ACCESS : if ( acl ) { <S2SV_StartBug> umode_t mode = inode -> i_mode ; <S2SV_EndBug> retval = posix_acl_equiv_mode ( acl , & mode ) ; if ( retval < 0 ) goto err_out ; <S2SV_StartBug> else { <S2SV_EndBug> struct iattr iattr ; if ( retval == 0 ) { acl = NULL ; value = NULL ; size = 0 ; } iattr . ia_mode = ( ( mode & S_IALLUGO ) | ( inode -> i_mode & ~ S_IALLUGO ) ) ; iattr . ia_valid = ATTR_MODE ; v9fs_vfs_setattr_dotl ( dentry , & iattr ) ; <S2SV_StartBug> } <S2SV_EndBug> } break ; case ACL_TYPE_DEFAULT : if ( ! S_ISDIR ( inode -> i_mode ) ) { retval = acl ? - EINVAL : 0 ; goto err_out ; } break ; default : BUG ( ) ; } retval = v9fs_xattr_set ( dentry , handler -> name , value , size , flags ) ; if ( ! retval ) set_cached_acl ( inode , handler -> flags , acl ) ; err_out : posix_acl_release ( acl ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> acl ) { struct iattr iattr ; retval = posix_acl_update_mode ( inode , & iattr . ia_mode , & acl ) ; if ( retval <S2SV_ModEnd> ) goto err_out <S2SV_ModStart> goto err_out ; if ( ! acl ) { value = NULL ; size = 0 ; } <S2SV_ModEnd> iattr . ia_valid <S2SV_ModStart> iattr ) ; <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-290(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18190\n\n```\nCWE-290 static int valid_host ( cupsd_client_t * con ) { cupsd_alias_t * a ; cupsd_netif_t * netif ; const char * end ; char * ptr ; strlcpy ( con -> clientname , httpGetField ( con -> http , HTTP_FIELD_HOST ) , sizeof ( con -> clientname ) ) ; if ( ( ptr = strrchr ( con -> clientname , ':' ) ) != NULL && ! strchr ( ptr , ']' ) ) { * ptr ++ = '\\\\0' ; con -> clientport = atoi ( ptr ) ; } else con -> clientport = con -> serverport ; if ( httpAddrLocalhost ( httpGetAddress ( con -> http ) ) ) { return ( ! _cups_strcasecmp ( con -> clientname , \"localhost\" ) || ! _cups_strcasecmp ( con -> clientname , \"localhost.\" ) || <S2SV_StartBug> # ifdef __linux <S2SV_EndBug> ! _cups_strcasecmp ( con -> clientname , \"localhost.localdomain\" ) || # endif ! strcmp ( con -> clientname , \"127.0.0.1\" ) || ! strcmp ( con -> clientname , \"[::1]\" ) ) ; } # if defined ( HAVE_DNSSD ) || defined ( HAVE_AVAHI ) if ( ( end = strrchr ( con -> clientname , '.' ) ) != NULL && end > con -> clientname && ! end [ 1 ] ) { for ( end -- ; end > con -> clientname && * end != '.' ; end -- ) ; } if ( end && ( ! _cups_strcasecmp ( end , \".local\" ) || ! _cups_strcasecmp ( end , \".local.\" ) ) ) return ( 1 ) ; # endif if ( isdigit ( con -> clientname [ 0 ] & 255 ) || con -> clientname [ 0 ] == '[' ) { http_addrlist_t * addrlist ; if ( ( addrlist = httpAddrGetList ( con -> clientname , AF_UNSPEC , NULL ) ) != NULL ) { httpAddrFreeList ( addrlist ) ; return ( 1 ) ; } } for ( a = ( cupsd_alias_t * ) cupsArrayFirst ( ServerAlias ) ; a ; a = ( cupsd_alias_t * ) cupsArrayNext ( ServerAlias ) ) { if ( ! strcmp ( a -> name , \"*\" ) ) return ( 1 ) ; if ( ! _cups_strncasecmp ( con -> clientname , a -> name , a -> namelen ) ) { end = con -> clientname + a -> namelen ; if ( ! * end || ( * end == '.' && ! end [ 1 ] ) ) return ( 1 ) ; } } # if defined ( HAVE_DNSSD ) || defined ( HAVE_AVAHI ) for ( a = ( cupsd_alias_t * ) cupsArrayFirst ( DNSSDAlias ) ; a ; a = ( cupsd_alias_t * ) cupsArrayNext ( DNSSDAlias ) ) { if ( ! strcmp ( a -> name , \"*\" ) ) return ( 1 ) ; if ( ! _cups_strncasecmp ( con -> clientname , a -> name , a -> namelen ) ) { end = con -> clientname + a -> namelen ; if ( ! * end || ( * end == '.' && ! end [ 1 ] ) ) return ( 1 ) ; } } # endif for ( netif = ( cupsd_netif_t * ) cupsArrayFirst ( NetIFList ) ; netif ; netif = ( cupsd_netif_t * ) cupsArrayNext ( NetIFList ) ) { if ( ! _cups_strncasecmp ( con -> clientname , netif -> hostname , netif -> hostlen ) ) { end = con -> clientname + netif -> hostlen ; if ( ! * end || ( * end == '.' && ! end [ 1 ] ) ) return ( 1 ) ; } } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"localhost.\" ) || <S2SV_ModEnd> ! strcmp (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9226\n\n```\nCWE-787 static int fetch_token ( OnigToken * tok , UChar * * src , UChar * end , ScanEnv * env ) { int r , num ; OnigCodePoint c ; OnigEncoding enc = env -> enc ; OnigSyntaxType * syn = env -> syntax ; UChar * prev ; UChar * p = * src ; PFETCH_READY ; start : if ( PEND ) { tok -> type = TK_EOT ; return tok -> type ; } tok -> type = TK_STRING ; tok -> base = 0 ; tok -> backp = p ; PFETCH ( c ) ; if ( IS_MC_ESC_CODE ( c , syn ) ) { if ( PEND ) return ONIGERR_END_PATTERN_AT_ESCAPE ; tok -> backp = p ; PFETCH ( c ) ; tok -> u . c = c ; tok -> escaped = 1 ; switch ( c ) { case '*' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_ASTERISK_ZERO_INF ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '+' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_PLUS_ONE_INF ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 1 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '?' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_QMARK_ZERO_ONE ) ) break ; tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = 1 ; greedy_check : if ( ! PEND && PPEEK_IS ( '?' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_QMARK_NON_GREEDY ) ) { PFETCH ( c ) ; tok -> u . repeat . greedy = 0 ; tok -> u . repeat . possessive = 0 ; } else { possessive_check : if ( ! PEND && PPEEK_IS ( '+' ) && ( ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_PLUS_POSSESSIVE_REPEAT ) && tok -> type != TK_INTERVAL ) || ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_PLUS_POSSESSIVE_INTERVAL ) && tok -> type == TK_INTERVAL ) ) ) { PFETCH ( c ) ; tok -> u . repeat . greedy = 1 ; tok -> u . repeat . possessive = 1 ; } else { tok -> u . repeat . greedy = 1 ; tok -> u . repeat . possessive = 0 ; } } break ; case '{' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_BRACE_INTERVAL ) ) break ; r = fetch_range_quantifier ( & p , end , tok , env ) ; if ( r < 0 ) return r ; if ( r == 0 ) goto greedy_check ; else if ( r == 2 ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY ) ) goto possessive_check ; goto greedy_check ; } break ; case '|' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_VBAR_ALT ) ) break ; tok -> type = TK_ALT ; break ; case '(' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_OPEN ; break ; case ')' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_CLOSE ; break ; case 'w' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_W_WORD ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 0 ; break ; case 'W' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_W_WORD ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_WORD ; tok -> u . prop . not = 1 ; break ; case 'b' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_B_WORD_BOUND ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor = ANCHOR_WORD_BOUND ; break ; case 'B' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_B_WORD_BOUND ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor = ANCHOR_NOT_WORD_BOUND ; break ; # ifdef USE_WORD_BEGIN_END case '<' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor = ANCHOR_WORD_BEGIN ; break ; case '>' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_LTGT_WORD_BEGIN_END ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . anchor = ANCHOR_WORD_END ; break ; # endif case 's' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_S_WHITE_SPACE ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 0 ; break ; case 'S' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_S_WHITE_SPACE ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_SPACE ; tok -> u . prop . not = 1 ; break ; case 'd' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_D_DIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 0 ; break ; case 'D' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_D_DIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_DIGIT ; tok -> u . prop . not = 1 ; break ; case 'h' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 0 ; break ; case 'H' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_H_XDIGIT ) ) break ; tok -> type = TK_CHAR_TYPE ; tok -> u . prop . ctype = ONIGENC_CTYPE_XDIGIT ; tok -> u . prop . not = 1 ; break ; case 'A' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; begin_buf : tok -> type = TK_ANCHOR ; tok -> u . subtype = ANCHOR_BEGIN_BUF ; break ; case 'Z' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . subtype = ANCHOR_SEMI_END_BUF ; break ; case 'z' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_AZ_BUF_ANCHOR ) ) break ; end_buf : tok -> type = TK_ANCHOR ; tok -> u . subtype = ANCHOR_END_BUF ; break ; case 'G' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_CAPITAL_G_BEGIN_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . subtype = ANCHOR_BEGIN_POSITION ; break ; case '`' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR ) ) break ; goto begin_buf ; break ; case '\\\\'' : if ( ! IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_GNU_BUF_ANCHOR ) ) break ; goto end_buf ; break ; case 'x' : if ( PEND ) break ; prev = p ; if ( PPEEK_IS ( '{' ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_BRACE_HEX8 ) ) { PINC ; num = scan_unsigned_hexadecimal_number ( & p , end , 8 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_WIDE_CHAR_VALUE ; if ( ! PEND ) { if ( ONIGENC_IS_CODE_XDIGIT ( enc , PPEEK ) ) return ONIGERR_TOO_LONG_WIDE_CHAR_VALUE ; } if ( ( p > prev + enclen ( enc , prev ) ) && ! PEND && PPEEK_IS ( '}' ) ) { PINC ; tok -> type = TK_CODE_POINT ; tok -> u . code = ( OnigCodePoint ) num ; } else { p = prev ; } } else if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_X_HEX2 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 2 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 16 ; tok -> u . c = num ; } break ; case 'u' : if ( PEND ) break ; prev = p ; if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_U_HEX4 ) ) { num = scan_unsigned_hexadecimal_number ( & p , end , 4 , enc ) ; if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; if ( p == prev ) { num = 0 ; } tok -> type = TK_CODE_POINT ; tok -> base = 16 ; tok -> u . code = ( OnigCodePoint ) num ; } break ; case '1' : case '2' : case '3' : case '4' : case '5' : case '6' : case '7' : case '8' : case '9' : PUNFETCH ; prev = p ; num = onig_scan_unsigned_number ( & p , end , enc ) ; if ( num < 0 || num > ONIG_MAX_BACKREF_NUM ) { goto skip_backref ; } if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_DECIMAL_BACKREF ) && ( num <= env -> num_mem || num <= 9 ) ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_STRICT_CHECK_BACKREF ) ) { if ( num > env -> num_mem || IS_NULL ( SCANENV_MEM_NODES ( env ) [ num ] ) ) return ONIGERR_INVALID_BACKREF ; } tok -> type = TK_BACKREF ; tok -> u . backref . num = 1 ; tok -> u . backref . ref1 = num ; tok -> u . backref . by_name = 0 ; # ifdef USE_BACKREF_WITH_LEVEL tok -> u . backref . exist_level = 0 ; # endif break ; } skip_backref : if ( c == '8' || c == '9' ) { p = prev ; PINC ; break ; } p = prev ; case '0' : if ( IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ESC_OCTAL3 ) ) { prev = p ; num = scan_unsigned_octal_number ( & p , end , ( c == '0' ? 2 : 3 ) , enc ) ; <S2SV_StartBug> if ( num < 0 ) return ONIGERR_TOO_BIG_NUMBER ; <S2SV_EndBug> if ( p == prev ) { num = 0 ; } tok -> type = TK_RAW_BYTE ; tok -> base = 8 ; tok -> u . c = num ; } else if ( c != '0' ) { PINC ; } break ; # ifdef USE_NAMED_GROUP case 'k' : if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_K_NAMED_BACKREF ) ) { PFETCH ( c ) ; if ( c == '<' || c == '\\\\'' ) { UChar * name_end ; int * backs ; int back_num ; prev = p ; # ifdef USE_BACKREF_WITH_LEVEL name_end = NULL_UCHARP ; r = fetch_name_with_level ( ( OnigCodePoint ) c , & p , end , & name_end , env , & back_num , & tok -> u . backref . level ) ; if ( r == 1 ) tok -> u . backref . exist_level = 1 ; else tok -> u . backref . exist_level = 0 ; # else r = fetch_name ( & p , end , & name_end , env , & back_num , 1 ) ; # endif if ( r < 0 ) return r ; if ( back_num != 0 ) { if ( back_num < 0 ) { back_num = BACKREF_REL_TO_ABS ( back_num , env ) ; if ( back_num <= 0 ) return ONIGERR_INVALID_BACKREF ; } if ( IS_SYNTAX_BV ( syn , ONIG_SYN_STRICT_CHECK_BACKREF ) ) { if ( back_num > env -> num_mem || IS_NULL ( SCANENV_MEM_NODES ( env ) [ back_num ] ) ) return ONIGERR_INVALID_BACKREF ; } tok -> type = TK_BACKREF ; tok -> u . backref . by_name = 0 ; tok -> u . backref . num = 1 ; tok -> u . backref . ref1 = back_num ; } else { num = onig_name_to_group_numbers ( env -> reg , prev , name_end , & backs ) ; if ( num <= 0 ) { onig_scan_env_set_error_string ( env , ONIGERR_UNDEFINED_NAME_REFERENCE , prev , name_end ) ; return ONIGERR_UNDEFINED_NAME_REFERENCE ; } if ( IS_SYNTAX_BV ( syn , ONIG_SYN_STRICT_CHECK_BACKREF ) ) { int i ; for ( i = 0 ; i < num ; i ++ ) { if ( backs [ i ] > env -> num_mem || IS_NULL ( SCANENV_MEM_NODES ( env ) [ backs [ i ] ] ) ) return ONIGERR_INVALID_BACKREF ; } } tok -> type = TK_BACKREF ; tok -> u . backref . by_name = 1 ; if ( num == 1 ) { tok -> u . backref . num = 1 ; tok -> u . backref . ref1 = backs [ 0 ] ; } else { tok -> u . backref . num = num ; tok -> u . backref . refs = backs ; } } } else PUNFETCH ; } break ; # endif # ifdef USE_SUBEXP_CALL case 'g' : if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_G_SUBEXP_CALL ) ) { PFETCH ( c ) ; if ( c == '<' || c == '\\\\'' ) { int gnum ; UChar * name_end ; prev = p ; r = fetch_name ( ( OnigCodePoint ) c , & p , end , & name_end , env , & gnum , 1 ) ; if ( r < 0 ) return r ; tok -> type = TK_CALL ; tok -> u . call . name = prev ; tok -> u . call . name_end = name_end ; tok -> u . call . gnum = gnum ; } else PUNFETCH ; } break ; # endif case 'Q' : if ( IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_CAPITAL_Q_QUOTE ) ) { tok -> type = TK_QUOTE_OPEN ; } break ; case 'p' : case 'P' : if ( ! PEND && PPEEK_IS ( '{' ) && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CHAR_PROPERTY ) ) { PINC ; tok -> type = TK_CHAR_PROPERTY ; tok -> u . prop . not = ( c == 'P' ? 1 : 0 ) ; if ( ! PEND && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_ESC_P_BRACE_CIRCUMFLEX_NOT ) ) { PFETCH ( c ) ; if ( c == '^' ) { tok -> u . prop . not = ( tok -> u . prop . not == 0 ? 1 : 0 ) ; } else PUNFETCH ; } } break ; default : { OnigCodePoint c2 ; PUNFETCH ; num = fetch_escaped_value ( & p , end , env , & c2 ) ; if ( num < 0 ) return num ; if ( tok -> u . c != c2 ) { tok -> type = TK_CODE_POINT ; tok -> u . code = c2 ; } else { p = tok -> backp + enclen ( enc , tok -> backp ) ; } } break ; } } else { tok -> u . c = c ; tok -> escaped = 0 ; # ifdef USE_VARIABLE_META_CHARS if ( ( c != ONIG_INEFFECTIVE_META_CHAR ) && IS_SYNTAX_OP ( syn , ONIG_SYN_OP_VARIABLE_META_CHARACTERS ) ) { if ( c == MC_ANYCHAR ( syn ) ) goto any_char ; else if ( c == MC_ANYTIME ( syn ) ) goto anytime ; else if ( c == MC_ZERO_OR_ONE_TIME ( syn ) ) goto zero_or_one_time ; else if ( c == MC_ONE_OR_MORE_TIME ( syn ) ) goto one_or_more_time ; else if ( c == MC_ANYCHAR_ANYTIME ( syn ) ) { tok -> type = TK_ANYCHAR_ANYTIME ; goto out ; } } # endif switch ( c ) { case '.' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_DOT_ANYCHAR ) ) break ; # ifdef USE_VARIABLE_META_CHARS any_char : # endif tok -> type = TK_ANYCHAR ; break ; case '*' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_ASTERISK_ZERO_INF ) ) break ; # ifdef USE_VARIABLE_META_CHARS anytime : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '+' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_PLUS_ONE_INF ) ) break ; # ifdef USE_VARIABLE_META_CHARS one_or_more_time : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 1 ; tok -> u . repeat . upper = REPEAT_INFINITE ; goto greedy_check ; break ; case '?' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_QMARK_ZERO_ONE ) ) break ; # ifdef USE_VARIABLE_META_CHARS zero_or_one_time : # endif tok -> type = TK_OP_REPEAT ; tok -> u . repeat . lower = 0 ; tok -> u . repeat . upper = 1 ; goto greedy_check ; break ; case '{' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_BRACE_INTERVAL ) ) break ; r = fetch_range_quantifier ( & p , end , tok , env ) ; if ( r < 0 ) return r ; if ( r == 0 ) goto greedy_check ; else if ( r == 2 ) { if ( IS_SYNTAX_BV ( syn , ONIG_SYN_FIXED_INTERVAL_IS_GREEDY_ONLY ) ) goto possessive_check ; goto greedy_check ; } break ; case '|' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_VBAR_ALT ) ) break ; tok -> type = TK_ALT ; break ; case '(' : if ( ! PEND && PPEEK_IS ( '?' ) && IS_SYNTAX_OP2 ( syn , ONIG_SYN_OP2_QMARK_GROUP_EFFECT ) ) { PINC ; if ( ! PEND && PPEEK_IS ( '#' ) ) { PFETCH ( c ) ; while ( 1 ) { if ( PEND ) return ONIGERR_END_PATTERN_IN_GROUP ; PFETCH ( c ) ; if ( c == MC_ESC ( syn ) ) { if ( ! PEND ) PFETCH ( c ) ; } else { if ( c == ')' ) break ; } } goto start ; } PUNFETCH ; } if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_OPEN ; break ; case ')' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LPAREN_SUBEXP ) ) break ; tok -> type = TK_SUBEXP_CLOSE ; break ; case '^' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LINE_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . subtype = ( IS_SINGLELINE ( env -> option ) ? ANCHOR_BEGIN_BUF : ANCHOR_BEGIN_LINE ) ; break ; case '$' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_LINE_ANCHOR ) ) break ; tok -> type = TK_ANCHOR ; tok -> u . subtype = ( IS_SINGLELINE ( env -> option ) ? ANCHOR_SEMI_END_BUF : ANCHOR_END_LINE ) ; break ; case '[' : if ( ! IS_SYNTAX_OP ( syn , ONIG_SYN_OP_BRACKET_CC ) ) break ; tok -> type = TK_CC_OPEN ; break ; case ']' : if ( * src > env -> pattern ) CLOSE_BRACKET_WITHOUT_ESC_WARN ( env , ( UChar * ) \"]\" ) ; break ; case '#' : if ( IS_EXTEND ( env -> option ) ) { while ( ! PEND ) { PFETCH ( c ) ; if ( ONIGENC_IS_CODE_NEWLINE ( enc , c ) ) break ; } goto start ; break ; } break ; case '<S2SV_blank>' : case '\\\\t' : case '\\\\n' : case '\\\\r' : case '\\\\f' : if ( IS_EXTEND ( env -> option ) ) goto start ; break ; default : break ; } } # ifdef USE_VARIABLE_META_CHARS out : # endif * src = p ; return tok -> type ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> num < 0 || num >= 256\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11375\n\n```\nCWE-125 <S2SV_StartBug> INST_HANDLER ( lds ) { <S2SV_EndBug> int d = ( ( buf [ 0 ] >> 4 ) & 0xf ) | ( ( buf [ 1 ] & 0x1 ) << 4 ) ; int k = ( buf [ 3 ] << 8 ) | buf [ 2 ] ; op -> ptr = k ; __generic_ld_st ( op , \"ram\" , 0 , 1 , 0 , k , 0 ) ; ESIL_A ( \"r%d,=,\" , d ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lds ) { if ( len < 4 ) { return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8275\n\n```\nCWE-310 int ASN1_item_verify ( const ASN1_ITEM * it , X509_ALGOR * a , ASN1_BIT_STRING * signature , void * asn , EVP_PKEY * pkey ) { EVP_MD_CTX ctx ; unsigned char * buf_in = NULL ; int ret = - 1 , inl ; int mdnid , pknid ; if ( ! pkey ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_PASSED_NULL_PARAMETER ) ; return - 1 ; } <S2SV_StartBug> EVP_MD_CTX_init ( & ctx ) ; <S2SV_EndBug> if ( ! OBJ_find_sigid_algs ( OBJ_obj2nid ( a -> algorithm ) , & mdnid , & pknid ) ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM ) ; goto err ; } if ( mdnid == NID_undef ) { if ( ! pkey -> ameth || ! pkey -> ameth -> item_verify ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM ) ; goto err ; } ret = pkey -> ameth -> item_verify ( & ctx , it , asn , a , signature , pkey ) ; if ( ret != 2 ) goto err ; ret = - 1 ; } else { const EVP_MD * type ; type = EVP_get_digestbynid ( mdnid ) ; if ( type == NULL ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM ) ; goto err ; } if ( EVP_PKEY_type ( pknid ) != pkey -> ameth -> pkey_id ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ASN1_R_WRONG_PUBLIC_KEY_TYPE ) ; goto err ; } if ( ! EVP_DigestVerifyInit ( & ctx , NULL , type , NULL , pkey ) ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } } inl = ASN1_item_i2d ( asn , & buf_in , it ) ; if ( buf_in == NULL ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_MALLOC_FAILURE ) ; goto err ; } ret = EVP_DigestVerifyUpdate ( & ctx , buf_in , inl ) ; OPENSSL_cleanse ( buf_in , ( unsigned int ) inl ) ; OPENSSL_free ( buf_in ) ; if ( ! ret ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; goto err ; } ret = - 1 ; if ( EVP_DigestVerifyFinal ( & ctx , signature -> data , ( size_t ) signature -> length ) <= 0 ) { ASN1err ( ASN1_F_ASN1_ITEM_VERIFY , ERR_R_EVP_LIB ) ; ret = 0 ; goto err ; } ret = 1 ; err : EVP_MD_CTX_cleanup ( & ctx ) ; return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ; } if ( signature -> type == V_ASN1_BIT_STRING && signature -> flags & 0x7 ) { ASN1err ( ASN1_F_ASN1_VERIFY , ASN1_R_INVALID_BIT_STRING_BITS_LEFT ) ; return - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8896\n\n```\nCWE-000 MagickExport const char * GetMagickFeatures ( void ) { return \"DPC\" <S2SV_StartBug> # if defined ( MAGICKCORE_BUILD_MODULES ) || defined ( _DLL ) <S2SV_EndBug> \"<S2SV_blank>Modules\" # endif # if defined ( MAGICKCORE_HDRI_SUPPORT ) <S2SV_StartBug> \"<S2SV_blank>HDRI\" <S2SV_EndBug> # endif # if defined ( MAGICKCORE_OPENCL_SUPPORT ) \"<S2SV_blank>OpenCL\" # endif # if defined ( MAGICKCORE_OPENMP_SUPPORT ) \"<S2SV_blank>OpenMP\" # endif <S2SV_StartBug> ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> if defined ( MAGICKCORE_WINDOWS_SUPPORT ) && defined ( _DEBUG ) \"<S2SV_blank>Debug\" # endif # if defined ( MAGICKCORE_CIPHER_SUPPORT ) \"<S2SV_blank>Cipher\" <S2SV_ModEnd> # endif # <S2SV_ModStart> MAGICKCORE_HDRI_SUPPORT ) \"<S2SV_blank>HDRI\" # endif # if defined ( MAGICKCORE_BUILD_MODULES ) || defined ( _DLL ) \"<S2SV_blank>Modules\" <S2SV_ModStart> \"<S2SV_blank>OpenMP\" # endif # if defined ( ZERO_CONFIGURATION_SUPPORT ) \"<S2SV_blank>Zero-configuration\" # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9540\n\n```\nCWE-787 DECLAREwriteFunc ( writeBufferToContigTiles ) { uint32 imagew = TIFFScanlineSize ( out ) ; uint32 tilew = TIFFTileRowSize ( out ) ; int iskew = imagew - tilew ; tsize_t tilesize = TIFFTileSize ( out ) ; tdata_t obuf ; uint8 * bufp = ( uint8 * ) buf ; uint32 tl , tw ; uint32 row ; ( void ) spp ; obuf = _TIFFmalloc ( TIFFTileSize ( out ) ) ; if ( obuf == NULL ) return 0 ; _TIFFmemset ( obuf , 0 , tilesize ) ; ( void ) TIFFGetField ( out , TIFFTAG_TILELENGTH , & tl ) ; ( void ) TIFFGetField ( out , TIFFTAG_TILEWIDTH , & tw ) ; for ( row = 0 ; row < imagelength ; row += tilelength ) { uint32 nrow = ( row + tl > imagelength ) ? imagelength - row : tl ; uint32 colb = 0 ; uint32 col ; <S2SV_StartBug> for ( col = 0 ; col < imagewidth ; col += tw ) { <S2SV_EndBug> if ( colb + tilew > imagew ) { uint32 width = imagew - colb ; int oskew = tilew - width ; cpStripToTile ( obuf , bufp + colb , nrow , width , oskew , oskew + iskew ) ; } else cpStripToTile ( obuf , bufp + colb , nrow , tilew , 0 , iskew ) ; if ( TIFFWriteTile ( out , obuf , col , row , 0 , 0 ) < 0 ) { TIFFError ( TIFFFileName ( out ) , \"Error,<S2SV_blank>can\\'t<S2SV_blank>write<S2SV_blank>tile<S2SV_blank>at<S2SV_blank>%lu<S2SV_blank>%lu\" , ( unsigned long ) col , ( unsigned long ) row ) ; _TIFFfree ( obuf ) ; return 0 ; } colb += tilew ; } bufp += nrow * imagew ; } _TIFFfree ( obuf ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> col < imagewidth && colb < imagew\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-191(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-28194\n\n```\nCWE-191 int rad_packet_recv ( int fd , struct rad_packet_t * * p , struct sockaddr_in * addr ) { struct rad_packet_t * pack ; struct rad_attr_t * attr ; struct rad_dict_attr_t * da ; struct rad_dict_vendor_t * vendor ; uint8_t * ptr ; int n , id , len , vendor_id ; socklen_t addr_len = sizeof ( * addr ) ; * p = NULL ; pack = rad_packet_alloc ( 0 ) ; if ( ! pack ) return 0 ; ptr = mempool_alloc ( buf_pool ) ; if ( ptr == MAP_FAILED ) { log_emerg ( \"radius:packet:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; goto out_err ; } pack -> buf = ptr ; clock_gettime ( CLOCK_MONOTONIC , & pack -> tv ) ; while ( 1 ) { if ( addr ) n = recvfrom ( fd , pack -> buf , REQ_LENGTH_MAX , 0 , addr , & addr_len ) ; else n = read ( fd , pack -> buf , REQ_LENGTH_MAX ) ; if ( n < 0 ) { rad_packet_free ( pack ) ; if ( errno == EAGAIN ) return 1 ; if ( errno != ECONNREFUSED ) log_ppp_error ( \"radius:packet:read:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; return - 1 ; } break ; } if ( n < 20 ) { log_ppp_warn ( \"radius:packet:<S2SV_blank>short<S2SV_blank>packed<S2SV_blank>received<S2SV_blank>(%i)\\\\n\" , n ) ; goto out_err ; } pack -> code = * ptr ; ptr ++ ; pack -> id = * ptr ; ptr ++ ; pack -> len = ntohs ( * ( uint16_t * ) ptr ) ; ptr += 2 ; if ( pack -> len > n ) { log_ppp_warn ( \"radius:packet:<S2SV_blank>short<S2SV_blank>packet<S2SV_blank>received<S2SV_blank>%i,<S2SV_blank>expected<S2SV_blank>%i\\\\n\" , pack -> len , n ) ; goto out_err ; } ptr += 16 ; n -= 20 ; while ( n > 0 ) { id = * ptr ; ptr ++ ; len = * ptr - 2 ; ptr ++ ; if ( len < 0 ) { log_ppp_warn ( \"radius:packet<S2SV_blank>short<S2SV_blank>attribute<S2SV_blank>len<S2SV_blank>received\\\\n\" ) ; goto out_err ; } if ( 2 + len > n ) { log_ppp_warn ( \"radius:packet:<S2SV_blank>too<S2SV_blank>long<S2SV_blank>attribute<S2SV_blank>received<S2SV_blank>(%i,<S2SV_blank>%i)\\\\n\" , id , len ) ; goto out_err ; } if ( id == 26 ) { vendor_id = ntohl ( * ( uint32_t * ) ptr ) ; vendor = rad_dict_find_vendor_id ( vendor_id ) ; if ( vendor ) { ptr += 4 ; if ( vendor -> tag == 2 ) id = ( uint16_t ) ntohs ( * ( uint16_t * ) ptr ) ; else id = * ptr ; ptr += vendor -> tag ; if ( vendor -> len == 2 ) len = ( uint16_t ) ntohs ( * ( uint16_t * ) ptr ) ; else len = * ptr ; ptr += vendor -> len ; len -= vendor -> tag + vendor -> len ; n -= 4 + vendor -> tag + vendor -> len ; <S2SV_StartBug> } else <S2SV_EndBug> log_ppp_warn ( \"radius:packet:<S2SV_blank>vendor<S2SV_blank>%i<S2SV_blank>not<S2SV_blank>found\\\\n\" , id ) ; } else vendor = NULL ; da = rad_dict_find_attr_id ( vendor , id ) ; if ( da ) { attr = mempool_alloc ( attr_pool ) ; if ( ! attr ) { log_emerg ( \"radius:packet:<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory\\\\n\" ) ; goto out_err ; } memset ( attr , 0 , sizeof ( * attr ) ) ; attr -> vendor = vendor ; attr -> attr = da ; attr -> len = len ; attr -> raw = ptr ; if ( ! da -> array ) { switch ( da -> type ) { case ATTR_TYPE_STRING : attr -> alloc = 1 ; attr -> val . string = _malloc ( len + 1 ) ; memcpy ( attr -> val . string , ptr , len ) ; attr -> val . string [ len ] = 0 ; break ; case ATTR_TYPE_OCTETS : case ATTR_TYPE_ETHER : case ATTR_TYPE_TLV : attr -> val . octets = ptr ; break ; case ATTR_TYPE_INTEGER : if ( len != da -> size ) log_ppp_warn ( \"radius:packet:<S2SV_blank>attribute<S2SV_blank>%s<S2SV_blank>has<S2SV_blank>invalid<S2SV_blank>length<S2SV_blank>%i<S2SV_blank>(must<S2SV_blank>be<S2SV_blank>%i)\\\\n\" , da -> name , len , da -> size ) ; case ATTR_TYPE_DATE : if ( len == 4 ) attr -> val . integer = ntohl ( * ( uint32_t * ) ptr ) ; else if ( len == 2 ) attr -> val . integer = ntohs ( * ( uint16_t * ) ptr ) ; else if ( len == 1 ) attr -> val . integer = * ptr ; break ; case ATTR_TYPE_IPADDR : case ATTR_TYPE_IFID : case ATTR_TYPE_IPV6ADDR : memcpy ( & attr -> val . integer , ptr , len ) ; break ; case ATTR_TYPE_IPV6PREFIX : attr -> val . ipv6prefix . len = ptr [ 1 ] ; memset ( & attr -> val . ipv6prefix . prefix , 0 , sizeof ( attr -> val . ipv6prefix . prefix ) ) ; memcpy ( & attr -> val . ipv6prefix . prefix , ptr + 2 , len - 2 ) ; break ; } } list_add_tail ( & attr -> entry , & pack -> attrs ) ; } else log_ppp_warn ( \"radius:packet:<S2SV_blank>unknown<S2SV_blank>attribute<S2SV_blank>received<S2SV_blank>(%i,%i)\\\\n\" , vendor ? vendor -> id : 0 , id ) ; ptr += len ; n -= 2 + len ; } * p = pack ; return 0 ; out_err : rad_packet_free ( pack ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> len ; if ( len < 0 ) { log_ppp_warn ( \"radius:packet<S2SV_blank>invalid<S2SV_blank>vendor<S2SV_blank>attribute<S2SV_blank>len<S2SV_blank>received\\\\n\" ) ; goto out_err ; } if ( 2 + len > n ) { log_ppp_warn ( \"radius:packet:<S2SV_blank>too<S2SV_blank>long<S2SV_blank>vendor<S2SV_blank>attribute<S2SV_blank>received<S2SV_blank>(%i,<S2SV_blank>%i)\\\\n\" , id , len ) ; goto out_err ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11884\n\n```\nCWE-000 static int do_hidp_sock_ioctl ( struct socket * sock , unsigned int cmd , void __user * argp ) { struct hidp_connadd_req ca ; struct hidp_conndel_req cd ; struct hidp_connlist_req cl ; struct hidp_conninfo ci ; struct socket * csock ; struct socket * isock ; int err ; BT_DBG ( \"cmd<S2SV_blank>%x<S2SV_blank>arg<S2SV_blank>%p\" , cmd , argp ) ; switch ( cmd ) { case HIDPCONNADD : if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; if ( copy_from_user ( & ca , argp , sizeof ( ca ) ) ) return - EFAULT ; csock = sockfd_lookup ( ca . ctrl_sock , & err ) ; if ( ! csock ) return err ; isock = sockfd_lookup ( ca . intr_sock , & err ) ; if ( ! isock ) { sockfd_put ( csock ) ; return err ; <S2SV_StartBug> } <S2SV_EndBug> err = hidp_connection_add ( & ca , csock , isock ) ; if ( ! err && copy_to_user ( argp , & ca , sizeof ( ca ) ) ) err = - EFAULT ; sockfd_put ( csock ) ; sockfd_put ( isock ) ; return err ; case HIDPCONNDEL : if ( ! capable ( CAP_NET_ADMIN ) ) return - EPERM ; if ( copy_from_user ( & cd , argp , sizeof ( cd ) ) ) return - EFAULT ; return hidp_connection_del ( & cd ) ; case HIDPGETCONNLIST : if ( copy_from_user ( & cl , argp , sizeof ( cl ) ) ) return - EFAULT ; if ( cl . cnum <= 0 ) return - EINVAL ; err = hidp_get_connlist ( & cl ) ; if ( ! err && copy_to_user ( argp , & cl , sizeof ( cl ) ) ) return - EFAULT ; return err ; case HIDPGETCONNINFO : if ( copy_from_user ( & ci , argp , sizeof ( ci ) ) ) return - EFAULT ; err = hidp_get_conninfo ( & ci ) ; if ( ! err && copy_to_user ( argp , & ci , sizeof ( ci ) ) ) return - EFAULT ; return err ; } return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err ; } ca . name [ sizeof ( ca . name ) - 1 ] = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int unix_dgram_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock_iocb * siocb = kiocb_to_siocb ( iocb ) ; struct scm_cookie tmp_scm ; struct sock * sk = sock -> sk ; struct unix_sock * u = unix_sk ( sk ) ; int noblock = flags & MSG_DONTWAIT ; struct sk_buff * skb ; int err ; int peeked , skip ; err = - EOPNOTSUPP ; if ( flags & MSG_OOB ) <S2SV_StartBug> goto out ; <S2SV_EndBug> msg -> msg_namelen = 0 ; err = mutex_lock_interruptible ( & u -> readlock ) ; if ( err ) { err = sock_intr_errno ( sock_rcvtimeo ( sk , noblock ) ) ; goto out ; } skip = sk_peek_offset ( sk , flags ) ; skb = __skb_recv_datagram ( sk , flags , & peeked , & skip , & err ) ; if ( ! skb ) { unix_state_lock ( sk ) ; if ( sk -> sk_type == SOCK_SEQPACKET && err == - EAGAIN && ( sk -> sk_shutdown & RCV_SHUTDOWN ) ) err = 0 ; unix_state_unlock ( sk ) ; goto out_unlock ; } wake_up_interruptible_sync_poll ( & u -> peer_wait , POLLOUT | POLLWRNORM | POLLWRBAND ) ; if ( msg -> msg_name ) unix_copy_addr ( msg , skb -> sk ) ; if ( size > skb -> len - skip ) size = skb -> len - skip ; else if ( size < skb -> len - skip ) msg -> msg_flags |= MSG_TRUNC ; err = skb_copy_datagram_iovec ( skb , skip , msg -> msg_iov , size ) ; if ( err ) goto out_free ; if ( sock_flag ( sk , SOCK_RCVTSTAMP ) ) __sock_recv_timestamp ( msg , sk , skb ) ; if ( ! siocb -> scm ) { siocb -> scm = & tmp_scm ; memset ( & tmp_scm , 0 , sizeof ( tmp_scm ) ) ; } scm_set_cred ( siocb -> scm , UNIXCB ( skb ) . pid , UNIXCB ( skb ) . uid , UNIXCB ( skb ) . gid ) ; unix_set_secdata ( siocb -> scm , skb ) ; if ( ! ( flags & MSG_PEEK ) ) { if ( UNIXCB ( skb ) . fp ) unix_detach_fds ( siocb -> scm , skb ) ; sk_peek_offset_bwd ( sk , skb -> len ) ; } else { sk_peek_offset_fwd ( sk , size ) ; if ( UNIXCB ( skb ) . fp ) siocb -> scm -> fp = scm_fp_dup ( UNIXCB ( skb ) . fp ) ; } err = ( flags & MSG_TRUNC ) ? skb -> len - skip : size ; scm_recv ( sock , msg , siocb -> scm , flags ) ; out_free : skb_free_datagram ( sk , skb ) ; out_unlock : mutex_unlock ( & u -> readlock ) ; out : return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) goto out <S2SV_ModEnd> ; err =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4558\n\n```\nCWE-000 struct bpf_prog * bpf_prog_get ( u32 ufd ) { struct fd f = fdget ( ufd ) ; struct bpf_prog * prog ; prog = __bpf_prog_get ( f ) ; if ( IS_ERR ( prog ) ) return prog ; <S2SV_StartBug> atomic_inc ( & prog -> aux -> refcnt ) ; <S2SV_EndBug> fdput ( f ) ; return prog ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return prog ; prog = bpf_prog_inc ( prog <S2SV_ModEnd> ) ; fdput\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18017\n\n```\nCWE-416 static int tcpmss_mangle_packet ( struct sk_buff * skb , const struct xt_action_param * par , unsigned int family , unsigned int tcphoff , unsigned int minlen ) { const struct xt_tcpmss_info * info = par -> targinfo ; struct tcphdr * tcph ; int len , tcp_hdrlen ; unsigned int i ; __be16 oldval ; u16 newmss ; u8 * opt ; if ( par -> fragoff != 0 ) return 0 ; if ( ! skb_make_writable ( skb , skb -> len ) ) return - 1 ; len = skb -> len - tcphoff ; if ( len < ( int ) sizeof ( struct tcphdr ) ) return - 1 ; tcph = ( struct tcphdr * ) ( skb_network_header ( skb ) + tcphoff ) ; tcp_hdrlen = tcph -> doff * 4 ; <S2SV_StartBug> if ( len < tcp_hdrlen ) <S2SV_EndBug> return - 1 ; if ( info -> mss == XT_TCPMSS_CLAMP_PMTU ) { struct net * net = xt_net ( par ) ; unsigned int in_mtu = tcpmss_reverse_mtu ( net , skb , family ) ; unsigned int min_mtu = min ( dst_mtu ( skb_dst ( skb ) ) , in_mtu ) ; if ( min_mtu <= minlen ) { net_err_ratelimited ( \"unknown<S2SV_blank>or<S2SV_blank>invalid<S2SV_blank>path-MTU<S2SV_blank>(%u)\\\\n\" , min_mtu ) ; return - 1 ; } newmss = min_mtu - minlen ; } else newmss = info -> mss ; opt = ( u_int8_t * ) tcph ; for ( i = sizeof ( struct tcphdr ) ; i <= tcp_hdrlen - TCPOLEN_MSS ; i += optlen ( opt , i ) ) { if ( opt [ i ] == TCPOPT_MSS && opt [ i + 1 ] == TCPOLEN_MSS ) { u_int16_t oldmss ; oldmss = ( opt [ i + 2 ] << 8 ) | opt [ i + 3 ] ; if ( oldmss <= newmss ) return 0 ; opt [ i + 2 ] = ( newmss & 0xff00 ) >> 8 ; opt [ i + 3 ] = newmss & 0x00ff ; inet_proto_csum_replace2 ( & tcph -> check , skb , htons ( oldmss ) , htons ( newmss ) , false ) ; return 0 ; } } if ( len > tcp_hdrlen ) return 0 ; <S2SV_StartBug> if ( skb_tailroom ( skb ) < TCPOLEN_MSS ) { <S2SV_EndBug> if ( pskb_expand_head ( skb , 0 , TCPOLEN_MSS - skb_tailroom ( skb ) , GFP_ATOMIC ) ) return - 1 ; tcph = ( struct tcphdr * ) ( skb_network_header ( skb ) + tcphoff ) ; } skb_put ( skb , TCPOLEN_MSS ) ; if ( xt_family ( par ) == NFPROTO_IPV4 ) newmss = min ( newmss , ( u16 ) 536 ) ; else newmss = min ( newmss , ( u16 ) 1220 ) ; opt = ( u_int8_t * ) tcph + sizeof ( struct tcphdr ) ; memmove ( opt + TCPOLEN_MSS , opt , len - sizeof ( struct tcphdr ) ) ; inet_proto_csum_replace2 ( & tcph -> check , skb , htons ( len ) , htons ( len + TCPOLEN_MSS ) , true ) ; opt [ 0 ] = TCPOPT_MSS ; opt [ 1 ] = TCPOLEN_MSS ; opt [ 2 ] = ( newmss & 0xff00 ) >> 8 ; opt [ 3 ] = newmss & 0x00ff ; inet_proto_csum_replace4 ( & tcph -> check , skb , 0 , * ( ( __be32 * ) opt ) , false ) ; oldval = ( ( __be16 * ) tcph ) [ 6 ] ; tcph -> doff += TCPOLEN_MSS / 4 ; inet_proto_csum_replace2 ( & tcph -> check , skb , oldval , ( ( __be16 * ) tcph ) [ 6 ] , false ) ; return TCPOLEN_MSS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len < tcp_hdrlen || tcp_hdrlen < sizeof ( struct tcphdr ) <S2SV_ModStart> ; if ( tcp_hdrlen >= 15 * 4 ) return 0 ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4653\n\n```\nCWE-416 static int snd_ctl_elem_write ( struct snd_card * card , struct snd_ctl_file * file , struct snd_ctl_elem_value * control ) { struct snd_kcontrol * kctl ; struct snd_kcontrol_volatile * vd ; unsigned int index_offset ; int result ; down_read ( & card -> controls_rwsem ) ; kctl = snd_ctl_find_id ( card , & control -> id ) ; if ( kctl == NULL ) { result = - ENOENT ; } else { index_offset = snd_ctl_get_ioff ( kctl , & control -> id ) ; vd = & kctl -> vd [ index_offset ] ; if ( ! ( vd -> access & SNDRV_CTL_ELEM_ACCESS_WRITE ) || kctl -> put == NULL || ( file && vd -> owner && vd -> owner != file ) ) { result = - EPERM ; } else { snd_ctl_build_ioff ( & control -> id , kctl , index_offset ) ; result = kctl -> put ( kctl , control ) ; } if ( result > 0 ) { <S2SV_StartBug> up_read ( & card -> controls_rwsem ) ; <S2SV_EndBug> snd_ctl_notify ( card , SNDRV_CTL_EVENT_MASK_VALUE , <S2SV_StartBug> & control -> id ) ; <S2SV_EndBug> return 0 ; } } up_read ( & card -> controls_rwsem ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { struct snd_ctl_elem_id id = control -> id ; <S2SV_ModStart> , SNDRV_CTL_EVENT_MASK_VALUE , & <S2SV_ModEnd> id ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11072\n\n```\nCWE-190 static int burl_normalize_2F_to_slash_fix ( buffer * b , int qs , int i ) { char * const s = b -> ptr ; const int blen = ( int ) buffer_string_length ( b ) ; const int used = qs < 0 ? blen : qs ; int j = i ; for ( ; i < used ; ++ i , ++ j ) { s [ j ] = s [ i ] ; if ( s [ i ] == '%' && s [ i + 1 ] == '2' && s [ i + 2 ] == 'F' ) { s [ j ] = '/' ; i += 2 ; } } if ( qs >= 0 ) { <S2SV_StartBug> memmove ( s + j , s + qs , blen - qs ) ; <S2SV_EndBug> <S2SV_StartBug> j += blen - qs ; <S2SV_EndBug> } buffer_string_set_length ( b , j ) ; return qs ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { const int qslen = blen - qs ; <S2SV_ModStart> + qs , ( size_t ) qslen ) ; qs = j <S2SV_ModEnd> ; j += <S2SV_ModStart> ; j += qslen <S2SV_ModEnd> ; } buffer_string_set_length\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15853\n\n```\nCWE-400 bool ExprResolveBoolean ( struct xkb_context * ctx , const ExprDef * expr , bool * set_rtrn ) { bool ok = false ; const char * ident ; switch ( expr -> expr . op ) { case EXPR_VALUE : if ( expr -> expr . value_type != EXPR_TYPE_BOOLEAN ) { log_err ( ctx , \"Found<S2SV_blank>constant<S2SV_blank>of<S2SV_blank>type<S2SV_blank>%s<S2SV_blank>where<S2SV_blank>boolean<S2SV_blank>was<S2SV_blank>expected\\\\n\" , expr_value_type_to_string ( expr -> expr . value_type ) ) ; return false ; } * set_rtrn = expr -> boolean . set ; return true ; case EXPR_IDENT : ident = xkb_atom_text ( ctx , expr -> ident . ident ) ; if ( ident ) { if ( istreq ( ident , \"true\" ) || istreq ( ident , \"yes\" ) || istreq ( ident , \"on\" ) ) { * set_rtrn = true ; return true ; } else if ( istreq ( ident , \"false\" ) || istreq ( ident , \"no\" ) || istreq ( ident , \"off\" ) ) { * set_rtrn = false ; return true ; } } log_err ( ctx , \"Identifier<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>of<S2SV_blank>type<S2SV_blank>boolean<S2SV_blank>is<S2SV_blank>unknown\\\\n\" , ident ) ; return false ; case EXPR_FIELD_REF : log_err ( ctx , \"Default<S2SV_blank>\\\\\"%s.%s\\\\\"<S2SV_blank>of<S2SV_blank>type<S2SV_blank>boolean<S2SV_blank>is<S2SV_blank>unknown\\\\n\" , xkb_atom_text ( ctx , expr -> field_ref . element ) , xkb_atom_text ( ctx , expr -> field_ref . field ) ) ; return false ; case EXPR_INVERT : case EXPR_NOT : <S2SV_StartBug> ok = ExprResolveBoolean ( ctx , expr , set_rtrn ) ; <S2SV_EndBug> if ( ok ) * set_rtrn = ! * set_rtrn ; return ok ; case EXPR_ADD : case EXPR_SUBTRACT : case EXPR_MULTIPLY : case EXPR_DIVIDE : case EXPR_ASSIGN : case EXPR_NEGATE : case EXPR_UNARY_PLUS : log_err ( ctx , \"%s<S2SV_blank>of<S2SV_blank>boolean<S2SV_blank>values<S2SV_blank>not<S2SV_blank>permitted\\\\n\" , expr_op_type_to_string ( expr -> expr . op ) ) ; break ; default : log_wsgo ( ctx , \"Unknown<S2SV_blank>operator<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>ResolveBoolean\\\\n\" , expr -> expr . op ) ; break ; } return false ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ctx , expr -> unary . child\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12932\n\n```\nCWE-416 static zend_always_inline int process_nested_data ( UNSERIALIZE_PARAMETER , HashTable * ht , zend_long elements , int objprops ) { while ( elements -- > 0 ) { zval key , * data , d , * old_data ; zend_ulong idx ; ZVAL_UNDEF ( & key ) ; if ( ! php_var_unserialize_internal ( & key , p , max , NULL , classes ) ) { zval_dtor ( & key ) ; return 0 ; } data = NULL ; ZVAL_UNDEF ( & d ) ; if ( ! objprops ) { if ( Z_TYPE ( key ) == IS_LONG ) { idx = Z_LVAL ( key ) ; numeric_key : if ( UNEXPECTED ( ( old_data = zend_hash_index_find ( ht , idx ) ) != NULL ) ) { var_push_dtor ( var_hash , old_data ) ; data = zend_hash_index_update ( ht , idx , & d ) ; } else { data = zend_hash_index_add_new ( ht , idx , & d ) ; } } else if ( Z_TYPE ( key ) == IS_STRING ) { if ( UNEXPECTED ( ZEND_HANDLE_NUMERIC ( Z_STR ( key ) , idx ) ) ) { goto numeric_key ; } if ( UNEXPECTED ( ( old_data = zend_hash_find ( ht , Z_STR ( key ) ) ) != NULL ) ) { var_push_dtor ( var_hash , old_data ) ; data = zend_hash_update ( ht , Z_STR ( key ) , & d ) ; } else { data = zend_hash_add_new ( ht , Z_STR ( key ) , & d ) ; } } else { zval_dtor ( & key ) ; return 0 ; } } else { if ( EXPECTED ( Z_TYPE ( key ) == IS_STRING ) ) { string_key : if ( ( old_data = zend_hash_find ( ht , Z_STR ( key ) ) ) != NULL ) { if ( Z_TYPE_P ( old_data ) == IS_INDIRECT ) { old_data = Z_INDIRECT_P ( old_data ) ; } var_push_dtor ( var_hash , old_data ) ; data = zend_hash_update_ind ( ht , Z_STR ( key ) , & d ) ; } else { data = zend_hash_add_new ( ht , Z_STR ( key ) , & d ) ; } } else if ( Z_TYPE ( key ) == IS_LONG ) { convert_to_string ( & key ) ; goto string_key ; } else { zval_dtor ( & key ) ; return 0 ; } } if ( ! php_var_unserialize_internal ( data , p , max , var_hash , classes ) ) { zval_dtor ( & key ) ; return 0 ; } <S2SV_StartBug> if ( UNEXPECTED ( Z_ISUNDEF_P ( data ) ) ) { <S2SV_EndBug> if ( Z_TYPE ( key ) == IS_LONG ) { zend_hash_index_del ( ht , Z_LVAL ( key ) ) ; } else { zend_hash_del_ind ( ht , Z_STR ( key ) ) ; } } else { var_push_dtor ( var_hash , data ) ; <S2SV_StartBug> } <S2SV_EndBug> zval_dtor ( & key ) ; if ( elements && * ( * p - 1 ) != ';' && * ( * p - 1 ) != '}' ) { ( * p ) -- ; return 0 ; } } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ; } <S2SV_ModEnd> var_push_dtor ( var_hash <S2SV_ModStart> data ) ; <S2SV_ModEnd> zval_dtor ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-404(资源释放不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7472\n\n```\nCWE-404 int install_process_keyring_to_cred ( struct cred * new ) { struct key * keyring ; if ( new -> process_keyring ) <S2SV_StartBug> return - EEXIST ; <S2SV_EndBug> keyring = keyring_alloc ( \"_pid\" , new -> uid , new -> gid , new , KEY_POS_ALL | KEY_USR_VIEW , KEY_ALLOC_QUOTA_OVERRUN , NULL , NULL ) ; if ( IS_ERR ( keyring ) ) return PTR_ERR ( keyring ) ; new -> process_keyring = keyring ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> process_keyring ) return 0 <S2SV_ModEnd> ; keyring =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8884\n\n```\nCWE-119 static int ttusbdecfe_dvbs_diseqc_send_master_cmd ( struct dvb_frontend * fe , struct dvb_diseqc_master_cmd * cmd ) { struct ttusbdecfe_state * state = ( struct ttusbdecfe_state * ) fe -> demodulator_priv ; u8 b [ ] = { 0x00 , 0xff , 0x00 , 0x00 , 0x00 , 0x00 , 0x00 , 0x00 , 0x00 , 0x00 } ; <S2SV_StartBug> memcpy ( & b [ 4 ] , cmd -> msg , cmd -> msg_len ) ; <S2SV_EndBug> state -> config -> send_command ( fe , 0x72 , sizeof ( b ) - ( 6 - cmd -> msg_len ) , b , NULL , NULL ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0x00 } ; if ( cmd -> msg_len > sizeof ( b ) - 4 ) return - EINVAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_idct32x32_add ( const int16_t * input , uint8_t * dest , int stride , <S2SV_EndBug> int eob ) { if ( eob == 1 ) <S2SV_StartBug> vp9_idct32x32_1_add ( input , dest , stride ) ; <S2SV_EndBug> else if ( eob <= 34 ) <S2SV_StartBug> vp9_idct32x32_34_add ( input , dest , stride ) ; <S2SV_EndBug> else <S2SV_StartBug> vp9_idct32x32_1024_add ( input , dest , stride ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_idct32x32_add ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> == 1 ) vpx_idct32x32_1_add <S2SV_ModEnd> ( input , <S2SV_ModStart> <= 34 ) vpx_idct32x32_34_add <S2SV_ModEnd> ( input , <S2SV_ModStart> ) ; else vpx_idct32x32_1024_add <S2SV_ModEnd> ( input ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 <S2SV_StartBug> static inline void assign_eip_near ( struct x86_emulate_ctxt * ctxt , ulong dst ) <S2SV_EndBug> { <S2SV_StartBug> switch ( ctxt -> op_bytes ) { <S2SV_EndBug> case 2 : ctxt -> _eip = ( u16 ) dst ; break ; case 4 : ctxt -> _eip = ( u32 ) dst ; break ; case 8 : ctxt -> _eip = dst ; break ; default : WARN ( 1 , \"unsupported<S2SV_blank>eip<S2SV_blank>assignment<S2SV_blank>size\\\\n\" ) ; } <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> static inline int <S2SV_ModEnd> assign_eip_near ( struct <S2SV_ModStart> dst ) { return assign_eip_far ( ctxt , dst , ctxt -> mode == X86EMUL_MODE_PROT64 <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6561\n\n```\nCWE-476 smb_sdrc_t smb_com_flush ( smb_request_t * sr ) { smb_ofile_t * file ; smb_llist_t * flist ; int rc ; if ( smb_flush_required == 0 ) { rc = smbsr_encode_empty_result ( sr ) ; return ( ( rc == 0 ) ? SDRC_SUCCESS : SDRC_ERROR ) ; } if ( sr -> smb_fid != 0xffff ) { smbsr_lookup_file ( sr ) ; if ( sr -> fid_ofile == NULL ) { smbsr_error ( sr , NT_STATUS_INVALID_HANDLE , ERRDOS , ERRbadfid ) ; return ( SDRC_ERROR ) ; } <S2SV_StartBug> smb_flush_file ( sr , sr -> fid_ofile ) ; <S2SV_EndBug> } else { flist = & sr -> tid_tree -> t_ofile_list ; smb_llist_enter ( flist , RW_READER ) ; file = smb_llist_head ( flist ) ; while ( file ) { mutex_enter ( & file -> f_mutex ) ; <S2SV_StartBug> smb_flush_file ( sr , file ) ; <S2SV_EndBug> mutex_exit ( & file -> f_mutex ) ; file = smb_llist_next ( flist , file ) ; } smb_llist_exit ( flist ) ; } rc = smbsr_encode_empty_result ( sr ) ; return ( ( rc == 0 ) ? SDRC_SUCCESS : SDRC_ERROR ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } smb_ofile_flush <S2SV_ModEnd> ( sr , <S2SV_ModStart> f_mutex ) ; smb_ofile_flush <S2SV_ModEnd> ( sr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9150\n\n```\nCWE-200 <S2SV_StartBug> static void print_bpf_insn ( struct bpf_insn * insn ) <S2SV_EndBug> { u8 class = BPF_CLASS ( insn -> code ) ; if ( class == BPF_ALU || class == BPF_ALU64 ) { if ( BPF_SRC ( insn -> code ) == BPF_X ) verbose ( \"(%02x)<S2SV_blank>%sr%d<S2SV_blank>%s<S2SV_blank>%sr%d\\\\n\" , insn -> code , class == BPF_ALU ? \"(u32)<S2SV_blank>\" : \"\" , insn -> dst_reg , bpf_alu_string [ BPF_OP ( insn -> code ) >> 4 ] , class == BPF_ALU ? \"(u32)<S2SV_blank>\" : \"\" , insn -> src_reg ) ; else verbose ( \"(%02x)<S2SV_blank>%sr%d<S2SV_blank>%s<S2SV_blank>%s%d\\\\n\" , insn -> code , class == BPF_ALU ? \"(u32)<S2SV_blank>\" : \"\" , insn -> dst_reg , bpf_alu_string [ BPF_OP ( insn -> code ) >> 4 ] , class == BPF_ALU ? \"(u32)<S2SV_blank>\" : \"\" , insn -> imm ) ; } else if ( class == BPF_STX ) { if ( BPF_MODE ( insn -> code ) == BPF_MEM ) verbose ( \"(%02x)<S2SV_blank>*(%s<S2SV_blank>*)(r%d<S2SV_blank>%+d)<S2SV_blank>=<S2SV_blank>r%d\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> dst_reg , insn -> off , insn -> src_reg ) ; else if ( BPF_MODE ( insn -> code ) == BPF_XADD ) verbose ( \"(%02x)<S2SV_blank>lock<S2SV_blank>*(%s<S2SV_blank>*)(r%d<S2SV_blank>%+d)<S2SV_blank>+=<S2SV_blank>r%d\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> dst_reg , insn -> off , insn -> src_reg ) ; else verbose ( \"BUG_%02x\\\\n\" , insn -> code ) ; } else if ( class == BPF_ST ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM ) { verbose ( \"BUG_st_%02x\\\\n\" , insn -> code ) ; return ; } verbose ( \"(%02x)<S2SV_blank>*(%s<S2SV_blank>*)(r%d<S2SV_blank>%+d)<S2SV_blank>=<S2SV_blank>%d\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> dst_reg , insn -> off , insn -> imm ) ; } else if ( class == BPF_LDX ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM ) { verbose ( \"BUG_ldx_%02x\\\\n\" , insn -> code ) ; return ; } verbose ( \"(%02x)<S2SV_blank>r%d<S2SV_blank>=<S2SV_blank>*(%s<S2SV_blank>*)(r%d<S2SV_blank>%+d)\\\\n\" , insn -> code , insn -> dst_reg , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> src_reg , insn -> off ) ; } else if ( class == BPF_LD ) { if ( BPF_MODE ( insn -> code ) == BPF_ABS ) { verbose ( \"(%02x)<S2SV_blank>r0<S2SV_blank>=<S2SV_blank>*(%s<S2SV_blank>*)skb[%d]\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> imm ) ; } else if ( BPF_MODE ( insn -> code ) == BPF_IND ) { verbose ( \"(%02x)<S2SV_blank>r0<S2SV_blank>=<S2SV_blank>*(%s<S2SV_blank>*)skb[r%d<S2SV_blank>+<S2SV_blank>%d]\\\\n\" , insn -> code , bpf_ldst_string [ BPF_SIZE ( insn -> code ) >> 3 ] , insn -> src_reg , insn -> imm ) ; <S2SV_StartBug> } else if ( BPF_MODE ( insn -> code ) == BPF_IMM ) { <S2SV_EndBug> verbose ( \"(%02x)<S2SV_blank>r%d<S2SV_blank>=<S2SV_blank>0x%x\\\\n\" , <S2SV_StartBug> insn -> code , insn -> dst_reg , insn -> imm ) ; <S2SV_EndBug> } else { verbose ( \"BUG_ld_%02x\\\\n\" , insn -> code ) ; return ; } } else if ( class == BPF_JMP ) { u8 opcode = BPF_OP ( insn -> code ) ; if ( opcode == BPF_CALL ) { verbose ( \"(%02x)<S2SV_blank>call<S2SV_blank>%s#%d\\\\n\" , insn -> code , func_id_name ( insn -> imm ) , insn -> imm ) ; } else if ( insn -> code == ( BPF_JMP | BPF_JA ) ) { verbose ( \"(%02x)<S2SV_blank>goto<S2SV_blank>pc%+d\\\\n\" , insn -> code , insn -> off ) ; } else if ( insn -> code == ( BPF_JMP | BPF_EXIT ) ) { verbose ( \"(%02x)<S2SV_blank>exit\\\\n\" , insn -> code ) ; } else if ( BPF_SRC ( insn -> code ) == BPF_X ) { verbose ( \"(%02x)<S2SV_blank>if<S2SV_blank>r%d<S2SV_blank>%s<S2SV_blank>r%d<S2SV_blank>goto<S2SV_blank>pc%+d\\\\n\" , insn -> code , insn -> dst_reg , bpf_jmp_string [ BPF_OP ( insn -> code ) >> 4 ] , insn -> src_reg , insn -> off ) ; } else { verbose ( \"(%02x)<S2SV_blank>if<S2SV_blank>r%d<S2SV_blank>%s<S2SV_blank>0x%x<S2SV_blank>goto<S2SV_blank>pc%+d\\\\n\" , insn -> code , insn -> dst_reg , bpf_jmp_string [ BPF_OP ( insn -> code ) >> 4 ] , insn -> imm , insn -> off ) ; } } else { verbose ( \"(%02x)<S2SV_blank>%s\\\\n\" , insn -> code , bpf_class_string [ class ] ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> void print_bpf_insn ( const struct bpf_verifier_env * env , const <S2SV_ModStart> ) == BPF_IMM && BPF_SIZE ( insn -> code ) == BPF_DW ) { u64 imm = ( ( u64 ) ( insn + 1 ) -> imm << 32 ) | ( u32 ) insn -> imm ; bool map_ptr = insn -> src_reg == BPF_PSEUDO_MAP_FD ; if ( map_ptr && ! env -> allow_ptr_leaks ) imm = 0 ; verbose ( \"(%02x)<S2SV_blank>r%d<S2SV_blank>=<S2SV_blank>0x%llx\\\\n\" , insn -> code , <S2SV_ModEnd> insn -> dst_reg <S2SV_ModStart> -> dst_reg , ( unsigned long long ) <S2SV_ModEnd> imm ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8543\n\n```\nCWE-000 static int irda_create ( struct net * net , struct socket * sock , int protocol , int kern ) { struct sock * sk ; struct irda_sock * self ; <S2SV_StartBug> if ( net != & init_net ) <S2SV_EndBug> return - EAFNOSUPPORT ; switch ( sock -> type ) { case SOCK_STREAM : case SOCK_SEQPACKET : case SOCK_DGRAM : break ; default : return - ESOCKTNOSUPPORT ; } sk = sk_alloc ( net , PF_IRDA , GFP_KERNEL , & irda_proto , kern ) ; if ( sk == NULL ) return - ENOMEM ; self = irda_sk ( sk ) ; pr_debug ( \"%s()<S2SV_blank>:<S2SV_blank>self<S2SV_blank>is<S2SV_blank>%p\\\\n\" , __func__ , self ) ; init_waitqueue_head ( & self -> query_wait ) ; switch ( sock -> type ) { case SOCK_STREAM : sock -> ops = & irda_stream_ops ; self -> max_sdu_size_rx = TTP_SAR_DISABLE ; break ; case SOCK_SEQPACKET : sock -> ops = & irda_seqpacket_ops ; self -> max_sdu_size_rx = TTP_SAR_UNBOUND ; break ; case SOCK_DGRAM : switch ( protocol ) { # ifdef CONFIG_IRDA_ULTRA case IRDAPROTO_ULTRA : sock -> ops = & irda_ultra_ops ; self -> max_data_size = ULTRA_MAX_DATA - LMP_PID_HEADER ; self -> max_header_size = IRDA_MAX_HEADER + LMP_PID_HEADER ; break ; # endif case IRDAPROTO_UNITDATA : sock -> ops = & irda_dgram_ops ; self -> max_sdu_size_rx = TTP_SAR_UNBOUND ; break ; default : sk_free ( sk ) ; return - ESOCKTNOSUPPORT ; } break ; default : sk_free ( sk ) ; return - ESOCKTNOSUPPORT ; } sock_init_data ( sock , sk ) ; sk -> sk_family = PF_IRDA ; sk -> sk_protocol = protocol ; self -> ckey = irlmp_register_client ( 0 , NULL , NULL , NULL ) ; self -> mask . word = 0xffff ; self -> rx_flow = self -> tx_flow = FLOW_START ; self -> nslots = DISCOVERY_DEFAULT_SLOTS ; self -> daddr = DEV_ADDR_ANY ; self -> saddr = 0x0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( protocol < 0 || protocol > SK_PROTOCOL_MAX ) return - EINVAL ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9538\n\n```\nCWE-190 static int readContigStripsIntoBuffer ( TIFF * in , uint8 * buf ) { uint8 * bufp = buf ; int32 bytes_read = 0 ; <S2SV_StartBug> uint16 strip , nstrips = TIFFNumberOfStrips ( in ) ; <S2SV_EndBug> uint32 stripsize = TIFFStripSize ( in ) ; uint32 rows = 0 ; uint32 rps = TIFFGetFieldDefaulted ( in , TIFFTAG_ROWSPERSTRIP , & rps ) ; tsize_t scanline_size = TIFFScanlineSize ( in ) ; if ( scanline_size == 0 ) { TIFFError ( \"\" , \"TIFF<S2SV_blank>scanline<S2SV_blank>size<S2SV_blank>is<S2SV_blank>zero!\" ) ; return 0 ; } for ( strip = 0 ; strip < nstrips ; strip ++ ) { bytes_read = TIFFReadEncodedStrip ( in , strip , bufp , - 1 ) ; rows = bytes_read / scanline_size ; if ( ( strip < ( nstrips - 1 ) ) && ( bytes_read != ( int32 ) stripsize ) ) TIFFError ( \"\" , \"Strip<S2SV_blank>%d:<S2SV_blank>read<S2SV_blank>%lu<S2SV_blank>bytes,<S2SV_blank>strip<S2SV_blank>size<S2SV_blank>%lu\" , ( int ) strip + 1 , ( unsigned long ) bytes_read , ( unsigned long ) stripsize ) ; if ( bytes_read < 0 && ! ignore ) { TIFFError ( \"\" , \"Error<S2SV_blank>reading<S2SV_blank>strip<S2SV_blank>%lu<S2SV_blank>after<S2SV_blank>%lu<S2SV_blank>rows\" , ( unsigned long ) strip , ( unsigned long ) rows ) ; return 0 ; } bufp += bytes_read ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; uint32 <S2SV_ModEnd> strip , nstrips\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3690\n\n```\nCWE-399 static void vmx_set_constant_host_state ( struct vcpu_vmx * vmx ) { u32 low32 , high32 ; unsigned long tmpl ; struct desc_ptr dt ; <S2SV_StartBug> vmcs_writel ( HOST_CR0 , read_cr0 ( ) & ~ X86_CR0_TS ) ; <S2SV_EndBug> <S2SV_StartBug> vmcs_writel ( HOST_CR4 , read_cr4 ( ) ) ; <S2SV_EndBug> vmcs_writel ( HOST_CR3 , read_cr3 ( ) ) ; vmcs_write16 ( HOST_CS_SELECTOR , __KERNEL_CS ) ; # ifdef CONFIG_X86_64 vmcs_write16 ( HOST_DS_SELECTOR , 0 ) ; vmcs_write16 ( HOST_ES_SELECTOR , 0 ) ; # else vmcs_write16 ( HOST_DS_SELECTOR , __KERNEL_DS ) ; vmcs_write16 ( HOST_ES_SELECTOR , __KERNEL_DS ) ; # endif vmcs_write16 ( HOST_SS_SELECTOR , __KERNEL_DS ) ; vmcs_write16 ( HOST_TR_SELECTOR , GDT_ENTRY_TSS * 8 ) ; native_store_idt ( & dt ) ; vmcs_writel ( HOST_IDTR_BASE , dt . address ) ; vmx -> host_idt_base = dt . address ; vmcs_writel ( HOST_RIP , vmx_return ) ; rdmsr ( MSR_IA32_SYSENTER_CS , low32 , high32 ) ; vmcs_write32 ( HOST_IA32_SYSENTER_CS , low32 ) ; rdmsrl ( MSR_IA32_SYSENTER_EIP , tmpl ) ; vmcs_writel ( HOST_IA32_SYSENTER_EIP , tmpl ) ; if ( vmcs_config . vmexit_ctrl & VM_EXIT_LOAD_IA32_PAT ) { rdmsr ( MSR_IA32_CR_PAT , low32 , high32 ) ; vmcs_write64 ( HOST_IA32_PAT , low32 | ( ( u64 ) high32 << 32 ) ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> desc_ptr dt ; unsigned long cr4 ; <S2SV_ModStart> ; vmcs_writel ( HOST_CR3 , read_cr3 ( ) ) ; cr4 = read_cr4 ( ) ; vmcs_writel ( HOST_CR4 , cr4 ) ; vmx -> host_state . vmcs_host_cr4 = cr4 <S2SV_ModEnd> ; vmcs_write16 (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8800\n\n```\nCWE-787 RD_BOOL cssp_read_tsrequest ( STREAM token , STREAM pubkey ) { STREAM s ; int length ; int tagval ; <S2SV_StartBug> s = tcp_recv ( NULL , 4 ) ; <S2SV_EndBug> if ( s == NULL ) return False ; if ( s -> p [ 0 ] != ( BER_TAG_SEQUENCE | BER_TAG_CONSTRUCTED ) ) { logger ( Protocol , Error , \"cssp_read_tsrequest(),<S2SV_blank>expected<S2SV_blank>BER_TAG_SEQUENCE|BER_TAG_CONSTRUCTED,<S2SV_blank>got<S2SV_blank>%x\" , s -> p [ 0 ] ) ; return False ; } if ( s -> p [ 1 ] < 0x80 ) length = s -> p [ 1 ] - 2 ; else if ( s -> p [ 1 ] == 0x81 ) length = s -> p [ 2 ] - 1 ; else if ( s -> p [ 1 ] == 0x82 ) length = ( s -> p [ 2 ] << 8 ) | s -> p [ 3 ] ; else return False ; s = tcp_recv ( s , length ) ; <S2SV_StartBug> if ( ! ber_in_header ( s , & tagval , & length ) || <S2SV_EndBug> tagval != ( BER_TAG_SEQUENCE | BER_TAG_CONSTRUCTED ) ) return False ; if ( ! ber_in_header ( s , & tagval , & length ) || tagval != ( BER_TAG_CTXT_SPECIFIC | BER_TAG_CONSTRUCTED | 0 ) ) return False ; <S2SV_StartBug> in_uint8s ( s , length ) ; <S2SV_EndBug> if ( token ) { if ( ! ber_in_header ( s , & tagval , & length ) || tagval != ( BER_TAG_CTXT_SPECIFIC | BER_TAG_CONSTRUCTED | 1 ) ) return False ; if ( ! ber_in_header ( s , & tagval , & length ) || tagval != ( BER_TAG_SEQUENCE | BER_TAG_CONSTRUCTED ) ) return False ; if ( ! ber_in_header ( s , & tagval , & length ) || tagval != ( BER_TAG_SEQUENCE | BER_TAG_CONSTRUCTED ) ) return False ; if ( ! ber_in_header ( s , & tagval , & length ) || tagval != ( BER_TAG_CTXT_SPECIFIC | BER_TAG_CONSTRUCTED | 0 ) ) return False ; if ( ! ber_in_header ( s , & tagval , & length ) || tagval != BER_TAG_OCTET_STRING ) return False ; <S2SV_StartBug> token -> end = token -> p = token -> data ; <S2SV_EndBug> out_uint8p ( token , s -> p , length ) ; s_mark_end ( token ) ; } if ( pubkey ) { if ( ! ber_in_header ( s , & tagval , & length ) || tagval != ( BER_TAG_CTXT_SPECIFIC | BER_TAG_CONSTRUCTED | 3 ) ) return False ; if ( ! ber_in_header ( s , & tagval , & length ) || tagval != BER_TAG_OCTET_STRING ) return False ; pubkey -> data = pubkey -> p = s -> p ; pubkey -> end = pubkey -> data + length ; pubkey -> size = length ; } return True ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int tagval ; struct stream packet ; <S2SV_ModStart> length ) ; packet = * s ; <S2SV_ModStart> return False ; if ( ! s_check_rem ( s , length ) ) { rdp_protocol_error ( \"cssp_read_tsrequest(),<S2SV_blank>consume<S2SV_blank>of<S2SV_blank>version<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; } <S2SV_ModStart> return False ; if ( ! s_check_rem ( s , length ) ) { rdp_protocol_error ( \"cssp_read_tsrequest(),<S2SV_blank>consume<S2SV_blank>of<S2SV_blank>token<S2SV_blank>from<S2SV_blank>stream<S2SV_blank>would<S2SV_blank>overrun\" , & packet ) ; } s_realloc ( token , length ) ; s_reset ( token ) <S2SV_ModEnd> ; out_uint8p (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5104\n\n```\nCWE-284 int socket_accept ( int fd , uint16_t port ) { # ifdef WIN32 int addr_len ; # else socklen_t addr_len ; # endif int result ; struct sockaddr_in addr ; memset ( & addr , 0 , sizeof ( addr ) ) ; addr . sin_family = AF_INET ; <S2SV_StartBug> addr . sin_addr . s_addr = htonl ( INADDR_ANY ) ; <S2SV_EndBug> addr . sin_port = htons ( port ) ; addr_len = sizeof ( addr ) ; result = accept ( fd , ( struct sockaddr * ) & addr , & addr_len ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = htonl ( INADDR_LOOPBACK <S2SV_ModEnd> ) ; addr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-772(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10810\n\n```\nCWE-772 int virtio_gpu_object_create ( struct virtio_gpu_device * vgdev , unsigned long size , bool kernel , bool pinned , struct virtio_gpu_object * * bo_ptr ) { struct virtio_gpu_object * bo ; enum ttm_bo_type type ; size_t acc_size ; int ret ; if ( kernel ) type = ttm_bo_type_kernel ; else type = ttm_bo_type_device ; * bo_ptr = NULL ; acc_size = ttm_bo_dma_acc_size ( & vgdev -> mman . bdev , size , sizeof ( struct virtio_gpu_object ) ) ; bo = kzalloc ( sizeof ( struct virtio_gpu_object ) , GFP_KERNEL ) ; if ( bo == NULL ) return - ENOMEM ; size = roundup ( size , PAGE_SIZE ) ; ret = drm_gem_object_init ( vgdev -> ddev , & bo -> gem_base , size ) ; if ( ret != 0 ) <S2SV_StartBug> return ret ; <S2SV_EndBug> bo -> dumb = false ; virtio_gpu_init_ttm_placement ( bo , pinned ) ; ret = ttm_bo_init ( & vgdev -> mman . bdev , & bo -> tbo , size , type , & bo -> placement , 0 , ! kernel , NULL , acc_size , NULL , NULL , & virtio_gpu_ttm_bo_destroy ) ; if ( ret != 0 ) return ret ; * bo_ptr = bo ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != 0 ) { kfree ( bo ) ; return ret ; } <S2SV_ModEnd> bo -> dumb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1342\n\n```\nCWE-264 int cg_mkdir ( const char * path , mode_t mode ) { struct fuse_context * fc = fuse_get_context ( ) ; <S2SV_StartBug> char * fpath = NULL , * path1 , * cgdir = NULL , * controller ; <S2SV_EndBug> const char * cgroup ; int ret ; if ( ! fc ) return - EIO ; controller = pick_controller_from_path ( fc , path ) ; if ( ! controller ) return - EINVAL ; cgroup = find_cgroup_in_path ( path ) ; if ( ! cgroup ) return - EINVAL ; get_cgdir_and_path ( cgroup , & cgdir , & fpath ) ; if ( ! fpath ) path1 = \"/\" ; else path1 = cgdir ; <S2SV_StartBug> if ( ! fc_may_access ( fc , controller , path1 , NULL , O_RDWR ) ) { <S2SV_EndBug> <S2SV_StartBug> ret = - EACCES ; <S2SV_EndBug> goto out ; } <S2SV_StartBug> if ( ! caller_is_in_ancestor ( fc -> pid , controller , path1 , NULL ) ) { <S2SV_EndBug> ret = - EACCES ; goto out ; } ret = cgfs_create ( controller , cgroup , fc -> uid , fc -> gid ) ; printf ( \"cgfs_create<S2SV_blank>returned<S2SV_blank>%d<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , ret , controller , cgroup ) ; out : free ( cgdir ) ; <S2SV_StartBug> return ret ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * controller , * next = NULL <S2SV_ModStart> if ( ! caller_is_in_ancestor ( fc -> pid , controller , path1 , & next <S2SV_ModEnd> ) ) { <S2SV_ModStart> ) ) { if ( fpath && strcmp ( next , fpath ) == 0 ) ret = - EEXIST ; else ret = - ENOENT <S2SV_ModEnd> ; goto out <S2SV_ModStart> if ( ! fc_may_access ( fc , controller , path1 , NULL , O_RDWR ) ) { ret = - EACCES ; goto out ; } if ( ! <S2SV_ModStart> cgdir ) ; free ( next ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-26788\n\n```\nCWE-20 error_t nicSendPacket ( NetInterface * interface , const NetBuffer * buffer , size_t offset , NetTxAncillary * ancillary ) { error_t error ; <S2SV_StartBug> bool_t status ; <S2SV_EndBug> netContext . entropy += netGetSystemTickCount ( ) ; <S2SV_StartBug> # if ( TRACE_LEVEL >= TRACE_LEVEL_DEBUG ) <S2SV_EndBug> size_t length = netBufferGetLength ( buffer ) - offset ; TRACE_DEBUG ( \"Sending<S2SV_blank>packet<S2SV_blank>(%\" PRIuSIZE \"<S2SV_blank>bytes)...\\\\r\\\\n\" , length ) ; TRACE_DEBUG_NET_BUFFER ( \"<S2SV_blank><S2SV_blank>\" , buffer , offset , length ) ; # endif if ( interface -> configured && interface -> nicDriver != NULL ) { if ( interface -> nicDriver -> type == NIC_TYPE_LOOPBACK ) { status = TRUE ; } else { status = osWaitForEvent ( & interface -> nicTxEvent , NIC_MAX_BLOCKING_TIME ) ; } if ( status ) { interface -> nicDriver -> disableIrq ( interface ) ; error = interface -> nicDriver -> sendPacket ( interface , buffer , offset , ancillary ) ; if ( interface -> configured ) { interface -> nicDriver -> enableIrq ( interface ) ; } } else { error = NO_ERROR ; } } else { error = ERROR_INVALID_INTERFACE ; } return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> bool_t status ; # if ( TRACE_LEVEL >= TRACE_LEVEL_DEBUG ) size_t length = netBufferGetLength ( buffer ) - offset ; TRACE_DEBUG ( \"Sending<S2SV_blank>packet<S2SV_blank>(%\" PRIuSIZE \"<S2SV_blank>bytes)...\\\\r\\\\n\" , length ) ; TRACE_DEBUG_NET_BUFFER ( \"<S2SV_blank><S2SV_blank>\" , buffer , offset , length ) ; # endif <S2SV_ModStart> ( ) ; <S2SV_ModEnd> if ( interface\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16658\n\n```\nCWE-200 static int cdrom_ioctl_drive_status ( struct cdrom_device_info * cdi , unsigned long arg ) { cd_dbg ( CD_DO_IOCTL , \"entering<S2SV_blank>CDROM_DRIVE_STATUS\\\\n\" ) ; if ( ! ( cdi -> ops -> capability & CDC_DRIVE_STATUS ) ) return - ENOSYS ; if ( ! CDROM_CAN ( CDC_SELECT_DISC ) || ( arg == CDSL_CURRENT || arg == CDSL_NONE ) ) return cdi -> ops -> drive_status ( cdi , CDSL_CURRENT ) ; <S2SV_StartBug> if ( ( ( int ) arg >= cdi -> capacity ) ) <S2SV_EndBug> return - EINVAL ; return cdrom_slot_status ( cdi , arg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> arg >= cdi <S2SV_ModStart> cdi -> capacity <S2SV_ModEnd> ) return -\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1593\n\n```\nCWE-264 static unsigned long randomize_stack_top ( unsigned long stack_top ) { <S2SV_StartBug> unsigned int random_variable = 0 ; <S2SV_EndBug> if ( ( current -> flags & PF_RANDOMIZE ) && ! ( current -> personality & ADDR_NO_RANDOMIZE ) ) { <S2SV_StartBug> random_variable = get_random_int ( ) & STACK_RND_MASK ; <S2SV_EndBug> random_variable <<= PAGE_SHIFT ; } # ifdef CONFIG_STACK_GROWSUP return PAGE_ALIGN ( stack_top ) + random_variable ; # else return PAGE_ALIGN ( stack_top ) - random_variable ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) { unsigned long <S2SV_ModEnd> random_variable = 0 <S2SV_ModStart> { random_variable = ( unsigned long ) <S2SV_ModStart> get_random_int ( ) ; random_variable &= <S2SV_ModEnd> STACK_RND_MASK ; random_variable\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static SCSIRequest * scsi_new_request ( SCSIDevice * d , uint32_t tag , uint32_t lun , void * hba_private ) { SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , d ) ; SCSIRequest * req ; <S2SV_StartBug> SCSIDiskReq * r ; <S2SV_EndBug> req = scsi_req_alloc ( & scsi_disk_reqops , & s -> qdev , tag , lun , hba_private ) ; <S2SV_StartBug> r = DO_UPCAST ( SCSIDiskReq , req , req ) ; <S2SV_EndBug> r -> iov . iov_base = qemu_blockalign ( s -> bs , SCSI_DMA_BUF_SIZE ) ; return req ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * req ; <S2SV_ModEnd> req = scsi_req_alloc <S2SV_ModStart> hba_private ) ; <S2SV_ModEnd> return req ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8339\n\n```\nCWE-119 void configSetCommand ( client * c ) { robj * o ; long long ll ; int err ; serverAssertWithInfo ( c , c -> argv [ 2 ] , sdsEncodedObject ( c -> argv [ 2 ] ) ) ; serverAssertWithInfo ( c , c -> argv [ 3 ] , sdsEncodedObject ( c -> argv [ 3 ] ) ) ; o = c -> argv [ 3 ] ; if ( 0 ) { config_set_special_field ( \"dbfilename\" ) { if ( ! pathIsBaseName ( o -> ptr ) ) { addReplyError ( c , \"dbfilename<S2SV_blank>can\\'t<S2SV_blank>be<S2SV_blank>a<S2SV_blank>path,<S2SV_blank>just<S2SV_blank>a<S2SV_blank>filename\" ) ; return ; } zfree ( server . rdb_filename ) ; server . rdb_filename = zstrdup ( o -> ptr ) ; } config_set_special_field ( \"requirepass\" ) { if ( sdslen ( o -> ptr ) > CONFIG_AUTHPASS_MAX_LEN ) goto badfmt ; zfree ( server . requirepass ) ; server . requirepass = ( ( char * ) o -> ptr ) [ 0 ] ? zstrdup ( o -> ptr ) : NULL ; } config_set_special_field ( \"masterauth\" ) { zfree ( server . masterauth ) ; server . masterauth = ( ( char * ) o -> ptr ) [ 0 ] ? zstrdup ( o -> ptr ) : NULL ; } config_set_special_field ( \"cluster-announce-ip\" ) { zfree ( server . cluster_announce_ip ) ; server . cluster_announce_ip = ( ( char * ) o -> ptr ) [ 0 ] ? zstrdup ( o -> ptr ) : NULL ; } config_set_special_field ( \"maxclients\" ) { int orig_value = server . maxclients ; if ( getLongLongFromObject ( o , & ll ) == C_ERR || ll < 1 ) goto badfmt ; server . maxclients = ll ; if ( ll > orig_value ) { adjustOpenFilesLimit ( ) ; if ( server . maxclients != ll ) { addReplyErrorFormat ( c , \"The<S2SV_blank>operating<S2SV_blank>system<S2SV_blank>is<S2SV_blank>not<S2SV_blank>able<S2SV_blank>to<S2SV_blank>handle<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>number<S2SV_blank>of<S2SV_blank>clients,<S2SV_blank>try<S2SV_blank>with<S2SV_blank>%d\" , server . maxclients ) ; server . maxclients = orig_value ; return ; } if ( ( unsigned int ) aeGetSetSize ( server . el ) < server . maxclients + CONFIG_FDSET_INCR ) { if ( aeResizeSetSize ( server . el , server . maxclients + CONFIG_FDSET_INCR ) == AE_ERR ) { addReplyError ( c , \"The<S2SV_blank>event<S2SV_blank>loop<S2SV_blank>API<S2SV_blank>used<S2SV_blank>by<S2SV_blank>Redis<S2SV_blank>is<S2SV_blank>not<S2SV_blank>able<S2SV_blank>to<S2SV_blank>handle<S2SV_blank>the<S2SV_blank>specified<S2SV_blank>number<S2SV_blank>of<S2SV_blank>clients\" ) ; server . maxclients = orig_value ; return ; } } } } config_set_special_field ( \"appendonly\" ) { int enable = yesnotoi ( o -> ptr ) ; if ( enable == - 1 ) goto badfmt ; if ( enable == 0 && server . aof_state != AOF_OFF ) { stopAppendOnly ( ) ; } else if ( enable && server . aof_state == AOF_OFF ) { if ( startAppendOnly ( ) == C_ERR ) { addReplyError ( c , \"Unable<S2SV_blank>to<S2SV_blank>turn<S2SV_blank>on<S2SV_blank>AOF.<S2SV_blank>Check<S2SV_blank>server<S2SV_blank>logs.\" ) ; return ; } } } config_set_special_field ( \"save\" ) { int vlen , j ; sds * v = sdssplitlen ( o -> ptr , sdslen ( o -> ptr ) , \"<S2SV_blank>\" , 1 , & vlen ) ; if ( vlen & 1 ) { sdsfreesplitres ( v , vlen ) ; goto badfmt ; } for ( j = 0 ; j < vlen ; j ++ ) { char * eptr ; long val ; val = strtoll ( v [ j ] , & eptr , 10 ) ; if ( eptr [ 0 ] != '\\\\0' || ( ( j & 1 ) == 0 && val < 1 ) || ( ( j & 1 ) == 1 && val < 0 ) ) { sdsfreesplitres ( v , vlen ) ; goto badfmt ; } } resetServerSaveParams ( ) ; for ( j = 0 ; j < vlen ; j += 2 ) { time_t seconds ; int changes ; seconds = strtoll ( v [ j ] , NULL , 10 ) ; changes = strtoll ( v [ j + 1 ] , NULL , 10 ) ; appendServerSaveParams ( seconds , changes ) ; } sdsfreesplitres ( v , vlen ) ; } config_set_special_field ( \"dir\" ) { if ( chdir ( ( char * ) o -> ptr ) == - 1 ) { addReplyErrorFormat ( c , \"Changing<S2SV_blank>directory:<S2SV_blank>%s\" , strerror ( errno ) ) ; return ; } } config_set_special_field ( \"client-output-buffer-limit\" ) { int vlen , j ; sds * v = sdssplitlen ( o -> ptr , sdslen ( o -> ptr ) , \"<S2SV_blank>\" , 1 , & vlen ) ; if ( vlen % 4 ) { sdsfreesplitres ( v , vlen ) ; goto badfmt ; } for ( j = 0 ; j < vlen ; j ++ ) { long val ; if ( ( j % 4 ) == 0 ) { <S2SV_StartBug> if ( getClientTypeByName ( v [ j ] ) == - 1 ) { <S2SV_EndBug> sdsfreesplitres ( v , vlen ) ; goto badfmt ; } } else { val = memtoll ( v [ j ] , & err ) ; if ( err || val < 0 ) { sdsfreesplitres ( v , vlen ) ; goto badfmt ; } } } for ( j = 0 ; j < vlen ; j += 4 ) { int class ; unsigned long long hard , soft ; int soft_seconds ; class = getClientTypeByName ( v [ j ] ) ; hard = strtoll ( v [ j + 1 ] , NULL , 10 ) ; soft = strtoll ( v [ j + 2 ] , NULL , 10 ) ; soft_seconds = strtoll ( v [ j + 3 ] , NULL , 10 ) ; server . client_obuf_limits [ class ] . hard_limit_bytes = hard ; server . client_obuf_limits [ class ] . soft_limit_bytes = soft ; server . client_obuf_limits [ class ] . soft_limit_seconds = soft_seconds ; } sdsfreesplitres ( v , vlen ) ; } config_set_special_field ( \"notify-keyspace-events\" ) { int flags = keyspaceEventsStringToFlags ( o -> ptr ) ; if ( flags == - 1 ) goto badfmt ; server . notify_keyspace_events = flags ; } config_set_special_field ( \"slave-announce-ip\" ) { zfree ( server . slave_announce_ip ) ; server . slave_announce_ip = ( ( char * ) o -> ptr ) [ 0 ] ? zstrdup ( o -> ptr ) : NULL ; } config_set_bool_field ( \"rdbcompression\" , server . rdb_compression ) { } config_set_bool_field ( \"repl-disable-tcp-nodelay\" , server . repl_disable_tcp_nodelay ) { } config_set_bool_field ( \"repl-diskless-sync\" , server . repl_diskless_sync ) { } config_set_bool_field ( \"cluster-require-full-coverage\" , server . cluster_require_full_coverage ) { } config_set_bool_field ( \"aof-rewrite-incremental-fsync\" , server . aof_rewrite_incremental_fsync ) { } config_set_bool_field ( \"aof-load-truncated\" , server . aof_load_truncated ) { } config_set_bool_field ( \"aof-use-rdb-preamble\" , server . aof_use_rdb_preamble ) { } config_set_bool_field ( \"slave-serve-stale-data\" , server . repl_serve_stale_data ) { } config_set_bool_field ( \"slave-read-only\" , server . repl_slave_ro ) { } config_set_bool_field ( \"activerehashing\" , server . activerehashing ) { } config_set_bool_field ( \"protected-mode\" , server . protected_mode ) { } config_set_bool_field ( \"stop-writes-on-bgsave-error\" , server . stop_writes_on_bgsave_err ) { } config_set_bool_field ( \"lazyfree-lazy-eviction\" , server . lazyfree_lazy_eviction ) { } config_set_bool_field ( \"lazyfree-lazy-expire\" , server . lazyfree_lazy_expire ) { } config_set_bool_field ( \"lazyfree-lazy-server-del\" , server . lazyfree_lazy_server_del ) { } config_set_bool_field ( \"slave-lazy-flush\" , server . repl_slave_lazy_flush ) { } config_set_bool_field ( \"no-appendfsync-on-rewrite\" , server . aof_no_fsync_on_rewrite ) { } config_set_numerical_field ( \"tcp-keepalive\" , server . tcpkeepalive , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"maxmemory-samples\" , server . maxmemory_samples , 1 , LLONG_MAX ) { } config_set_numerical_field ( \"lfu-log-factor\" , server . lfu_log_factor , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"lfu-decay-time\" , server . lfu_decay_time , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"timeout\" , server . maxidletime , 0 , LONG_MAX ) { } config_set_numerical_field ( \"auto-aof-rewrite-percentage\" , server . aof_rewrite_perc , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"auto-aof-rewrite-min-size\" , server . aof_rewrite_min_size , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"hash-max-ziplist-entries\" , server . hash_max_ziplist_entries , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"hash-max-ziplist-value\" , server . hash_max_ziplist_value , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"list-max-ziplist-size\" , server . list_max_ziplist_size , INT_MIN , INT_MAX ) { } config_set_numerical_field ( \"list-compress-depth\" , server . list_compress_depth , 0 , INT_MAX ) { } config_set_numerical_field ( \"set-max-intset-entries\" , server . set_max_intset_entries , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"zset-max-ziplist-entries\" , server . zset_max_ziplist_entries , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"zset-max-ziplist-value\" , server . zset_max_ziplist_value , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"hll-sparse-max-bytes\" , server . hll_sparse_max_bytes , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"lua-time-limit\" , server . lua_time_limit , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"slowlog-log-slower-than\" , server . slowlog_log_slower_than , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"slowlog-max-len\" , ll , 0 , LLONG_MAX ) { server . slowlog_max_len = ( unsigned ) ll ; } config_set_numerical_field ( \"latency-monitor-threshold\" , server . latency_monitor_threshold , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"repl-ping-slave-period\" , server . repl_ping_slave_period , 1 , LLONG_MAX ) { } config_set_numerical_field ( \"repl-timeout\" , server . repl_timeout , 1 , LLONG_MAX ) { } config_set_numerical_field ( \"repl-backlog-ttl\" , server . repl_backlog_time_limit , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"repl-diskless-sync-delay\" , server . repl_diskless_sync_delay , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"slave-priority\" , server . slave_priority , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"slave-announce-port\" , server . slave_announce_port , 0 , 65535 ) { } config_set_numerical_field ( \"min-slaves-to-write\" , server . repl_min_slaves_to_write , 0 , LLONG_MAX ) { refreshGoodSlavesCount ( ) ; } config_set_numerical_field ( \"min-slaves-max-lag\" , server . repl_min_slaves_max_lag , 0 , LLONG_MAX ) { refreshGoodSlavesCount ( ) ; } config_set_numerical_field ( \"cluster-node-timeout\" , server . cluster_node_timeout , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"cluster-announce-port\" , server . cluster_announce_port , 0 , 65535 ) { } config_set_numerical_field ( \"cluster-announce-bus-port\" , server . cluster_announce_bus_port , 0 , 65535 ) { } config_set_numerical_field ( \"cluster-migration-barrier\" , server . cluster_migration_barrier , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"cluster-slave-validity-factor\" , server . cluster_slave_validity_factor , 0 , LLONG_MAX ) { } config_set_numerical_field ( \"hz\" , server . hz , 0 , LLONG_MAX ) { if ( server . hz < CONFIG_MIN_HZ ) server . hz = CONFIG_MIN_HZ ; if ( server . hz > CONFIG_MAX_HZ ) server . hz = CONFIG_MAX_HZ ; } config_set_numerical_field ( \"watchdog-period\" , ll , 0 , LLONG_MAX ) { if ( ll ) enableWatchdog ( ll ) ; else disableWatchdog ( ) ; } config_set_memory_field ( \"maxmemory\" , server . maxmemory ) { if ( server . maxmemory ) { if ( server . maxmemory < zmalloc_used_memory ( ) ) { serverLog ( LL_WARNING , \"WARNING:<S2SV_blank>the<S2SV_blank>new<S2SV_blank>maxmemory<S2SV_blank>value<S2SV_blank>set<S2SV_blank>via<S2SV_blank>CONFIG<S2SV_blank>SET<S2SV_blank>is<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>the<S2SV_blank>current<S2SV_blank>memory<S2SV_blank>usage.<S2SV_blank>This<S2SV_blank>will<S2SV_blank>result<S2SV_blank>in<S2SV_blank>keys<S2SV_blank>eviction<S2SV_blank>and/or<S2SV_blank>inability<S2SV_blank>to<S2SV_blank>accept<S2SV_blank>new<S2SV_blank>write<S2SV_blank>commands<S2SV_blank>depending<S2SV_blank>on<S2SV_blank>the<S2SV_blank>maxmemory-policy.\" ) ; } freeMemoryIfNeeded ( ) ; } } config_set_memory_field ( \"repl-backlog-size\" , ll ) { resizeReplicationBacklog ( ll ) ; } config_set_enum_field ( \"loglevel\" , server . verbosity , loglevel_enum ) { } config_set_enum_field ( \"maxmemory-policy\" , server . maxmemory_policy , maxmemory_policy_enum ) { } config_set_enum_field ( \"appendfsync\" , server . aof_fsync , aof_fsync_enum ) { } config_set_else { addReplyErrorFormat ( c , \"Unsupported<S2SV_blank>CONFIG<S2SV_blank>parameter:<S2SV_blank>%s\" , ( char * ) c -> argv [ 2 ] -> ptr ) ; return ; } addReply ( c , shared . ok ) ; return ; badfmt : addReplyErrorFormat ( c , \"Invalid<S2SV_blank>argument<S2SV_blank>\\'%s\\'<S2SV_blank>for<S2SV_blank>CONFIG<S2SV_blank>SET<S2SV_blank>\\'%s\\'\" , ( char * ) o -> ptr , ( char * ) c -> argv [ 2 ] -> ptr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 ) { int class = <S2SV_ModEnd> getClientTypeByName ( v <S2SV_ModStart> j ] ) ; if ( class <S2SV_ModStart> == - 1 || class == CLIENT_TYPE_MASTER\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int btsock_thread_wakeup ( int h ) { if ( h < 0 || h >= MAX_THREAD ) { APPL_TRACE_ERROR ( \"invalid<S2SV_blank>bt<S2SV_blank>thread<S2SV_blank>handle:%d\" , h ) ; return FALSE ; } if ( ts [ h ] . cmd_fdw == - 1 ) { APPL_TRACE_ERROR ( \"thread<S2SV_blank>handle:%d,<S2SV_blank>cmd<S2SV_blank>socket<S2SV_blank>is<S2SV_blank>not<S2SV_blank>created\" , h ) ; return FALSE ; } sock_cmd_t cmd = { CMD_WAKEUP , 0 , 0 , 0 , 0 } ; <S2SV_StartBug> return send ( ts [ h ] . cmd_fdw , & cmd , sizeof ( cmd ) , 0 ) == sizeof ( cmd ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } ; return TEMP_FAILURE_RETRY ( <S2SV_ModStart> , 0 ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3915\n\n```\nCWE-264 int validate_camera_metadata_structure ( const camera_metadata_t * metadata , const size_t * expected_size ) { if ( metadata == NULL ) { ALOGE ( \"%s:<S2SV_blank>metadata<S2SV_blank>is<S2SV_blank>null!\" , __FUNCTION__ ) ; return ERROR ; } { static const struct { const char * name ; size_t alignment ; } alignments [ ] = { { . name = \"camera_metadata\" , . alignment = METADATA_ALIGNMENT } , { . name = \"camera_metadata_buffer_entry\" , . alignment = ENTRY_ALIGNMENT } , { . name = \"camera_metadata_data\" , . alignment = DATA_ALIGNMENT } , } ; for ( size_t i = 0 ; i < sizeof ( alignments ) / sizeof ( alignments [ 0 ] ) ; ++ i ) { uintptr_t aligned_ptr = ALIGN_TO ( metadata , alignments [ i ] . alignment ) ; if ( ( uintptr_t ) metadata != aligned_ptr ) { ALOGE ( \"%s:<S2SV_blank>Metadata<S2SV_blank>pointer<S2SV_blank>is<S2SV_blank>not<S2SV_blank>aligned<S2SV_blank>(actual<S2SV_blank>%p,<S2SV_blank>\" \"expected<S2SV_blank>%p)<S2SV_blank>to<S2SV_blank>type<S2SV_blank>%s\" , __FUNCTION__ , metadata , ( void * ) aligned_ptr , alignments [ i ] . name ) ; return ERROR ; } } } if ( expected_size != NULL && metadata -> size > * expected_size ) { ALOGE ( \"%s:<S2SV_blank>Metadata<S2SV_blank>size<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>expected<S2SV_blank>size<S2SV_blank>(%zu)\" , __FUNCTION__ , metadata -> size , * expected_size ) ; return ERROR ; } if ( metadata -> entry_count > metadata -> entry_capacity ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>count<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>entry<S2SV_blank>capacity<S2SV_blank>\" \"(%\" PRIu32 \")\" , __FUNCTION__ , metadata -> entry_count , metadata -> entry_capacity ) ; return ERROR ; } <S2SV_StartBug> const metadata_uptrdiff_t entries_end = <S2SV_EndBug> metadata -> entries_start + metadata -> entry_capacity ; if ( entries_end < metadata -> entries_start || entries_end > metadata -> data_start ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>start<S2SV_blank>+<S2SV_blank>capacity<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>data<S2SV_blank>start<S2SV_blank>\" \"(%\" PRIu32 \")\" , __FUNCTION__ , ( metadata -> entries_start + metadata -> entry_capacity ) , metadata -> data_start ) ; return ERROR ; } const metadata_uptrdiff_t data_end = metadata -> data_start + metadata -> data_capacity ; if ( data_end < metadata -> data_start || data_end > metadata -> size ) { ALOGE ( \"%s:<S2SV_blank>Data<S2SV_blank>start<S2SV_blank>+<S2SV_blank>capacity<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>total<S2SV_blank>size<S2SV_blank>\" \"(%\" PRIu32 \")\" , __FUNCTION__ , ( metadata -> data_start + metadata -> data_capacity ) , metadata -> size ) ; return ERROR ; } const metadata_size_t entry_count = metadata -> entry_count ; camera_metadata_buffer_entry_t * entries = get_entries ( metadata ) ; for ( size_t i = 0 ; i < entry_count ; ++ i ) { if ( ( uintptr_t ) & entries [ i ] != ALIGN_TO ( & entries [ i ] , ENTRY_ALIGNMENT ) ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>bad<S2SV_blank>alignment<S2SV_blank>(address<S2SV_blank>%p),\" \"<S2SV_blank>expected<S2SV_blank>alignment<S2SV_blank>%zu\" , __FUNCTION__ , i , & entries [ i ] , ENTRY_ALIGNMENT ) ; return ERROR ; } camera_metadata_buffer_entry_t entry = entries [ i ] ; if ( entry . type >= NUM_TYPES ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>a<S2SV_blank>bad<S2SV_blank>type<S2SV_blank>%d\" , __FUNCTION__ , i , entry . type ) ; return ERROR ; } uint32_t tag_section = entry . tag >> 16 ; int tag_type = get_camera_metadata_tag_type ( entry . tag ) ; if ( tag_type != ( int ) entry . type && tag_section < VENDOR_SECTION ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>tag<S2SV_blank>type<S2SV_blank>%d,<S2SV_blank>but<S2SV_blank>the<S2SV_blank>type<S2SV_blank>was<S2SV_blank>%d\" , __FUNCTION__ , i , tag_type , entry . type ) ; return ERROR ; } size_t data_size ; if ( validate_and_calculate_camera_metadata_entry_data_size ( & data_size , entry . type , entry . count ) != OK ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>data<S2SV_blank>size<S2SV_blank>is<S2SV_blank>invalid.<S2SV_blank>type:<S2SV_blank>%u<S2SV_blank>count:<S2SV_blank>%u\" , __FUNCTION__ , entry . type , entry . count ) ; return ERROR ; } if ( data_size != 0 ) { camera_metadata_data_t * data = ( camera_metadata_data_t * ) ( get_data ( metadata ) + entry . data . offset ) ; if ( ( uintptr_t ) data != ALIGN_TO ( data , DATA_ALIGNMENT ) ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>bad<S2SV_blank>data<S2SV_blank>alignment<S2SV_blank>(address<S2SV_blank>%p),\" \"<S2SV_blank>expected<S2SV_blank>align<S2SV_blank>%zu,<S2SV_blank>(tag<S2SV_blank>name<S2SV_blank>%s,<S2SV_blank>data<S2SV_blank>size<S2SV_blank>%zu)\" , __FUNCTION__ , i , data , DATA_ALIGNMENT , get_camera_metadata_tag_name ( entry . tag ) ? : \"unknown\" , data_size ) ; return ERROR ; } size_t data_entry_end = entry . data . offset + data_size ; if ( data_entry_end < entry . data . offset || data_entry_end > metadata -> data_capacity ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>data<S2SV_blank>ends<S2SV_blank>(%zu)<S2SV_blank>beyond<S2SV_blank>the<S2SV_blank>capacity<S2SV_blank>\" \"%\" PRIu32 , __FUNCTION__ , i , data_entry_end , metadata -> data_capacity ) ; return ERROR ; } } else if ( entry . count == 0 ) { if ( entry . data . offset != 0 ) { ALOGE ( \"%s:<S2SV_blank>Entry<S2SV_blank>index<S2SV_blank>%zu<S2SV_blank>had<S2SV_blank>0<S2SV_blank>items,<S2SV_blank>but<S2SV_blank>offset<S2SV_blank>was<S2SV_blank>non-0<S2SV_blank>\" \"(%\" PRIu32 \"),<S2SV_blank>tag<S2SV_blank>name:<S2SV_blank>%s\" , __FUNCTION__ , i , entry . data . offset , get_camera_metadata_tag_name ( entry . tag ) ? : \"unknown\" ) ; return ERROR ; } } } return OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ERROR ; } if ( metadata -> data_count > metadata -> data_capacity ) { ALOGE ( \"%s:<S2SV_blank>Data<S2SV_blank>count<S2SV_blank>(%\" PRIu32 \")<S2SV_blank>should<S2SV_blank>be<S2SV_blank><=<S2SV_blank>data<S2SV_blank>capacity<S2SV_blank>\" \"(%\" PRIu32 \")\" , __FUNCTION__ , metadata -> data_count , metadata -> data_capacity ) ; android_errorWriteLog ( SN_EVENT_LOG_ID , \"30591838\" ) ; return ERROR ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2007-6761\n\n```\nCWE-119 static void videobuf_vm_close ( struct vm_area_struct * vma ) { struct videobuf_mapping * map = vma -> vm_private_data ; struct videobuf_queue * q = map -> q ; int i ; <S2SV_StartBug> dprintk ( 2 , \"vm_close<S2SV_blank>%p<S2SV_blank>[count=%d,vma=%08lx-%08lx]\\\\n\" , map , <S2SV_EndBug> map -> count , vma -> vm_start , vma -> vm_end ) ; map -> count -- ; if ( 0 == map -> count ) { dprintk ( 1 , \"munmap<S2SV_blank>%p<S2SV_blank>q=%p\\\\n\" , map , q ) ; mutex_lock ( & q -> lock ) ; for ( i = 0 ; i < VIDEO_MAX_FRAME ; i ++ ) { if ( NULL == q -> bufs [ i ] ) continue ; if ( q -> bufs [ i ] -> map != map ) continue ; q -> ops -> buf_release ( q , q -> bufs [ i ] ) ; q -> bufs [ i ] -> map = NULL ; q -> bufs [ i ] -> baddr = 0 ; } mutex_unlock ( & q -> lock ) ; kfree ( map ) ; } return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 2 , \"vm_close<S2SV_blank>%p<S2SV_blank>[count=%u,vma=%08lx-%08lx]\\\\n\" <S2SV_ModEnd> , map ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int compare_img ( const vpx_image_t * const img1 , const vpx_image_t * const img2 ) { <S2SV_StartBug> const uint32_t c_w = <S2SV_EndBug> ( img1 -> d_w + img1 -> x_chroma_shift ) >> img1 -> x_chroma_shift ; const uint32_t c_h = ( img1 -> d_h + img1 -> y_chroma_shift ) >> img1 -> y_chroma_shift ; uint32_t i ; int match = 1 ; match &= ( img1 -> fmt == img2 -> fmt ) ; match &= ( img1 -> d_w == img2 -> d_w ) ; match &= ( img1 -> d_h == img2 -> d_h ) ; <S2SV_StartBug> for ( i = 0 ; i < img1 -> d_h ; ++ i ) <S2SV_EndBug> match &= ( memcmp ( img1 -> planes [ VPX_PLANE_Y ] + i * img1 -> stride [ VPX_PLANE_Y ] , img2 -> planes [ VPX_PLANE_Y ] + i * img2 -> stride [ VPX_PLANE_Y ] , <S2SV_StartBug> img1 -> d_w ) == 0 ) ; <S2SV_EndBug> for ( i = 0 ; i < c_h ; ++ i ) match &= ( memcmp ( img1 -> planes [ VPX_PLANE_U ] + i * img1 -> stride [ VPX_PLANE_U ] , img2 -> planes [ VPX_PLANE_U ] + i * img2 -> stride [ VPX_PLANE_U ] , c_w ) == 0 ) ; for ( i = 0 ; i < c_h ; ++ i ) match &= ( memcmp ( img1 -> planes [ VPX_PLANE_V ] + i * img1 -> stride [ VPX_PLANE_V ] , img2 -> planes [ VPX_PLANE_V ] + i * img2 -> stride [ VPX_PLANE_V ] , c_w ) == 0 ) ; return match ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> img2 ) { uint32_t l_w = img1 -> d_w ; <S2SV_ModEnd> uint32_t c_w = <S2SV_ModStart> d_h ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( img1 -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) { l_w *= 2 ; c_w *= 2 ; } # endif <S2SV_ModStart> VPX_PLANE_Y ] , l_w <S2SV_ModEnd> ) == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0849\n\n```\nCWE-189 static int sysMapBlockFile ( FILE * mapf , MemMapping * pMap ) { char block_dev [ PATH_MAX + 1 ] ; size_t size ; unsigned int blksize ; <S2SV_StartBug> unsigned int blocks ; <S2SV_EndBug> unsigned int range_count ; unsigned int i ; if ( fgets ( block_dev , sizeof ( block_dev ) , mapf ) == NULL ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>block<S2SV_blank>device<S2SV_blank>from<S2SV_blank>header\\\\n\" ) ; return - 1 ; } for ( i = 0 ; i < sizeof ( block_dev ) ; ++ i ) { if ( block_dev [ i ] == '\\\\n' ) { block_dev [ i ] = 0 ; break ; } } if ( fscanf ( mapf , \"%zu<S2SV_blank>%u\\\\n%u\\\\n\" , & size , & blksize , & range_count ) != 3 ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>block<S2SV_blank>map<S2SV_blank>header\\\\n\" ) ; return - 1 ; } <S2SV_StartBug> blocks = ( ( size - 1 ) / blksize ) + 1 ; <S2SV_EndBug> <S2SV_StartBug> pMap -> range_count = range_count ; <S2SV_EndBug> <S2SV_StartBug> pMap -> ranges = malloc ( range_count * sizeof ( MappedRange ) ) ; <S2SV_EndBug> <S2SV_StartBug> memset ( pMap -> ranges , 0 , range_count * sizeof ( MappedRange ) ) ; <S2SV_EndBug> unsigned char * reserve ; reserve = mmap64 ( NULL , blocks * blksize , PROT_NONE , MAP_PRIVATE | MAP_ANON , - 1 , 0 ) ; if ( reserve == MAP_FAILED ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>reserve<S2SV_blank>address<S2SV_blank>space:<S2SV_blank>%s\\\\n\" , strerror ( errno ) ) ; <S2SV_StartBug> return - 1 ; <S2SV_EndBug> } <S2SV_StartBug> pMap -> ranges [ range_count - 1 ] . addr = reserve ; <S2SV_EndBug> <S2SV_StartBug> pMap -> ranges [ range_count - 1 ] . length = blocks * blksize ; <S2SV_EndBug> int fd = open ( block_dev , O_RDONLY ) ; if ( fd < 0 ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>block<S2SV_blank>device<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , block_dev , strerror ( errno ) ) ; return - 1 ; } unsigned char * next = reserve ; for ( i = 0 ; i < range_count ; ++ i ) { int start , end ; if ( fscanf ( mapf , \"%d<S2SV_blank>%d\\\\n\" , & start , & end ) != 2 ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>range<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>block<S2SV_blank>map\\\\n\" , i ) ; return - 1 ; } void * addr = mmap64 ( next , ( end - start ) * blksize , PROT_READ , MAP_PRIVATE | MAP_FIXED , fd , ( ( off64_t ) start ) * blksize ) ; if ( addr == MAP_FAILED ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>map<S2SV_blank>block<S2SV_blank>%d:<S2SV_blank>%s\\\\n\" , i , strerror ( errno ) ) ; return - 1 ; } pMap -> ranges [ i ] . addr = addr ; pMap -> ranges [ i ] . length = ( end - start ) * blksize ; <S2SV_StartBug> next += pMap -> ranges [ i ] . length ; <S2SV_EndBug> } pMap -> addr = reserve ; pMap -> length = size ; LOGI ( \"mmapped<S2SV_blank>%d<S2SV_blank>ranges\\\\n\" , range_count ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int blksize ; size_t <S2SV_ModEnd> blocks ; unsigned <S2SV_ModStart> 1 ; } if ( blksize != 0 ) { <S2SV_ModStart> + 1 ; } if ( size == 0 || blksize == 0 || blocks > SIZE_MAX / blksize || range_count == 0 ) { LOGE ( \"invalid<S2SV_blank>data<S2SV_blank>in<S2SV_blank>block<S2SV_blank>map<S2SV_blank>file:<S2SV_blank>size<S2SV_blank>%zu,<S2SV_blank>blksize<S2SV_blank>%u,<S2SV_blank>range_count<S2SV_blank>%u\\\\n\" , size , blksize , range_count ) ; return - 1 ; } <S2SV_ModStart> -> ranges = calloc ( range_count , <S2SV_ModEnd> sizeof ( MappedRange <S2SV_ModStart> ) ) ; if <S2SV_ModEnd> ( pMap -> <S2SV_ModStart> pMap -> ranges == NULL ) { LOGE ( \"calloc(%u,<S2SV_blank>%zu)<S2SV_blank>failed:<S2SV_blank>%s\\\\n\" , range_count , <S2SV_ModEnd> sizeof ( MappedRange <S2SV_ModStart> ( MappedRange ) , strerror ( errno ) ) ; return - 1 ; } <S2SV_ModEnd> unsigned char * <S2SV_ModStart> ) ) ; free ( pMap -> ranges ) ; <S2SV_ModStart> return - 1 ; } int fd = open ( block_dev , O_RDONLY ) ; if ( fd < 0 ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>block<S2SV_blank>device<S2SV_blank>%s:<S2SV_blank>%s\\\\n\" , block_dev , strerror ( errno ) ) ; munmap ( reserve , blocks * blksize ) ; free ( pMap -> ranges ) ; return - 1 ; } unsigned char * next = reserve ; size_t remaining_size = blocks * blksize ; bool success = true ; for ( i = 0 ; i < range_count ; ++ i ) { size_t start , end ; if ( fscanf ( mapf , \"%zu<S2SV_blank>%zu\\\\n\" , & start , & end ) != 2 ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>range<S2SV_blank>%d<S2SV_blank>in<S2SV_blank>block<S2SV_blank>map\\\\n\" , i ) ; success = false ; break ; } size_t length = ( end - start ) * blksize ; if ( end <= start || ( end - start ) > SIZE_MAX / blksize || length > remaining_size ) { LOGE ( \"unexpected<S2SV_blank>range<S2SV_blank>in<S2SV_blank>block<S2SV_blank>map:<S2SV_blank>%zu<S2SV_blank>%zu\\\\n\" , start , end ) ; success = false ; break ; } void * addr = mmap64 ( next , length , PROT_READ , MAP_PRIVATE | MAP_FIXED , fd , ( ( off64_t ) start ) * blksize ) ; if ( addr == MAP_FAILED ) { LOGW ( \"failed<S2SV_blank>to<S2SV_blank>map<S2SV_blank>block<S2SV_blank>%d:<S2SV_blank>%s\\\\n\" , i , strerror ( errno ) ) ; success = false ; break <S2SV_ModStart> -> ranges [ i <S2SV_ModEnd> ] . addr <S2SV_ModStart> . addr = addr <S2SV_ModEnd> ; pMap -> <S2SV_ModStart> -> ranges [ i <S2SV_ModEnd> ] . length <S2SV_ModStart> . length = length <S2SV_ModEnd> ; next += <S2SV_ModStart> ; next += length ; remaining_size -= length ; } if ( success && remaining_size != 0 ) { LOGE ( \"ranges<S2SV_blank>in<S2SV_blank>block<S2SV_blank>map<S2SV_blank>are<S2SV_blank>invalid:<S2SV_blank>remaining_size<S2SV_blank>=<S2SV_blank>%zu\\\\n\" , remaining_size ) ; success = false ; } if ( ! success ) { close ( fd ) ; munmap ( reserve , blocks * blksize ) ; free ( <S2SV_ModStart> pMap -> ranges ) ; return - 1 ; } close ( fd ) ; pMap -> addr = reserve ; pMap -> length <S2SV_ModEnd> = size ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4501\n\n```\nCWE-119 bool extract_sockaddr ( struct pool * pool , char * url ) { char * url_begin , * url_end , * ipv6_begin , * ipv6_end , * port_start = NULL ; char url_address [ 256 ] , port [ 6 ] ; int url_len , port_len = 0 ; url_begin = strstr ( url , \"//\" ) ; if ( ! url_begin ) url_begin = url ; else url_begin += 2 ; ipv6_begin = strstr ( url_begin , \"[\" ) ; ipv6_end = strstr ( url_begin , \"]\" ) ; if ( ipv6_begin && ipv6_end && ipv6_end > ipv6_begin ) url_end = strstr ( ipv6_end , \":\" ) ; else url_end = strstr ( url_begin , \":\" ) ; if ( url_end ) { url_len = url_end - url_begin ; port_len = strlen ( url_begin ) - url_len - 1 ; if ( port_len < 1 ) return false ; port_start = url_end + 1 ; } else url_len = strlen ( url_begin ) ; if ( url_len < 1 ) return false ; <S2SV_StartBug> sprintf ( url_address , \"%.*s\" , url_len , url_begin ) ; <S2SV_EndBug> if ( port_len ) snprintf ( port , 6 , \"%.*s\" , port_len , port_start ) ; else strcpy ( port , \"80\" ) ; free ( pool -> stratum_port ) ; pool -> stratum_port = strdup ( port ) ; free ( pool -> sockaddr_url ) ; pool -> sockaddr_url = strdup ( url_address ) ; return true ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return false ; if ( url_len >= sizeof ( url_address ) ) { applog ( LOG_WARNING , \"%s:<S2SV_blank>Truncating<S2SV_blank>overflowed<S2SV_blank>address<S2SV_blank>\\'%.*s\\'\" , __func__ , url_len , url_begin ) ; url_len = sizeof ( url_address ) - 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_get_raw_frame ( VP9Decoder * pbi , YV12_BUFFER_CONFIG * sd , <S2SV_StartBug> int64_t * time_stamp , int64_t * time_end_stamp , <S2SV_EndBug> <S2SV_StartBug> vp9_ppflags_t * flags ) { <S2SV_EndBug> <S2SV_StartBug> int ret = - 1 ; <S2SV_EndBug> if ( pbi -> ready_for_new_data == 1 ) return ret ; <S2SV_StartBug> if ( pbi -> common . show_frame == 0 ) <S2SV_EndBug> return ret ; pbi -> ready_for_new_data = 1 ; <S2SV_StartBug> * time_stamp = pbi -> last_time_stamp ; <S2SV_EndBug> * time_end_stamp = 0 ; <S2SV_StartBug> # if CONFIG_VP9_POSTPROC <S2SV_EndBug> <S2SV_StartBug> ret = vp9_post_proc_frame ( & pbi -> common , sd , flags ) ; <S2SV_EndBug> # else <S2SV_StartBug> * sd = * pbi -> common . frame_to_show ; <S2SV_EndBug> sd -> y_width = pbi -> common . width ; sd -> y_height = pbi -> common . height ; sd -> uv_width = sd -> y_width >> pbi -> common . subsampling_x ; sd -> uv_height = sd -> y_height >> pbi -> common . subsampling_y ; ret = 0 ; # endif <S2SV_StartBug> vp9_clear_system_state ( ) ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * sd , <S2SV_ModEnd> vp9_ppflags_t * flags <S2SV_ModStart> flags ) { VP9_COMMON * const cm = & pbi -> common ; <S2SV_ModStart> - 1 ; # if ! CONFIG_VP9_POSTPROC ( void ) * flags ; # endif <S2SV_ModStart> return ret ; pbi -> ready_for_new_data = 1 ; if ( ! cm -> show_frame <S2SV_ModEnd> ) return ret <S2SV_ModStart> = 1 ; <S2SV_ModEnd> # if CONFIG_VP9_POSTPROC <S2SV_ModStart> # if CONFIG_VP9_POSTPROC if ( ! cm -> show_existing_frame ) { <S2SV_ModStart> = vp9_post_proc_frame ( cm <S2SV_ModEnd> , sd , <S2SV_ModStart> flags ) ; } else { * sd = * cm -> frame_to_show ; ret = 0 ; } <S2SV_ModStart> sd = * cm -> frame_to_show <S2SV_ModEnd> ; ret = <S2SV_ModStart> ; # endif vpx_clear_system_state <S2SV_ModEnd> ( ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-269(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5940\n\n```\nCWE-269 static void copy_asoundrc ( void ) { char * src = RUN_ASOUNDRC_FILE ; char * dest ; if ( asprintf ( & dest , \"%s/.asoundrc\" , cfg . homedir ) == - 1 ) errExit ( \"asprintf\" ) ; if ( is_link ( dest ) ) { fprintf ( stderr , \"Error:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>a<S2SV_blank>symbolic<S2SV_blank>link\\\\n\" , dest ) ; exit ( 1 ) ; } <S2SV_StartBug> pid_t child = fork ( ) ; <S2SV_EndBug> if ( child < 0 ) errExit ( \"fork\" ) ; if ( child == 0 ) { drop_privs ( 0 ) ; int rv = copy_file ( src , dest , getuid ( ) , getgid ( ) , S_IRUSR | S_IWUSR ) ; <S2SV_StartBug> if ( rv ) <S2SV_EndBug> fprintf ( stderr , \"Warning:<S2SV_blank>cannot<S2SV_blank>transfer<S2SV_blank>.asoundrc<S2SV_blank>in<S2SV_blank>private<S2SV_blank>home<S2SV_blank>directory\\\\n\" ) ; else { <S2SV_StartBug> fs_logger2 ( \"clone\" , dest ) ; <S2SV_EndBug> } _exit ( 0 ) ; } waitpid ( child , NULL , 0 ) ; unlink ( src ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } copy_file_as_user <S2SV_ModEnd> ( src , <S2SV_ModStart> S_IWUSR ) ; <S2SV_ModEnd> fs_logger2 ( \"clone\" <S2SV_ModStart> \"clone\" , dest <S2SV_ModEnd> ) ; unlink\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 int yr_re_match ( RE * re , const char * target ) { return yr_re_exec ( re -> code , ( uint8_t * ) target , strlen ( target ) , <S2SV_StartBug> re -> flags | RE_FLAGS_SCAN , <S2SV_EndBug> NULL , NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> target ) , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_tokenize_sb ( VP9_COMP * cpi , TOKENEXTRA * * t , int dry_run , <S2SV_EndBug> BLOCK_SIZE bsize ) { VP9_COMMON * const cm = & cpi -> common ; <S2SV_StartBug> MACROBLOCKD * const xd = & cpi -> mb . e_mbd ; <S2SV_EndBug> <S2SV_StartBug> MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_EndBug> TOKENEXTRA * t_backup = * t ; const int ctx = vp9_get_skip_context ( xd ) ; <S2SV_StartBug> const int skip_inc = ! vp9_segfeature_active ( & cm -> seg , mbmi -> segment_id , <S2SV_EndBug> SEG_LVL_SKIP ) ; <S2SV_StartBug> struct tokenize_b_args arg = { cpi , xd , t } ; <S2SV_EndBug> if ( mbmi -> skip ) { if ( ! dry_run ) <S2SV_StartBug> cm -> counts . skip [ ctx ] [ 1 ] += skip_inc ; <S2SV_EndBug> reset_skip_context ( xd , bsize ) ; <S2SV_StartBug> if ( dry_run ) <S2SV_EndBug> * t = t_backup ; return ; } if ( ! dry_run ) { <S2SV_StartBug> cm -> counts . skip [ ctx ] [ 0 ] += skip_inc ; <S2SV_EndBug> vp9_foreach_transformed_block ( xd , bsize , tokenize_b , & arg ) ; } else { vp9_foreach_transformed_block ( xd , bsize , set_entropy_context_b , & arg ) ; <S2SV_StartBug> * t = t_backup ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , ThreadData * td , <S2SV_ModStart> -> common ; MACROBLOCK * const x = & td -> mb ; <S2SV_ModStart> xd = & x -> <S2SV_ModEnd> e_mbd ; MB_MODE_INFO <S2SV_ModStart> ] -> mbmi <S2SV_ModEnd> ; const int <S2SV_ModStart> skip_inc = ! segfeature_active <S2SV_ModEnd> ( & cm <S2SV_ModStart> { cpi , td <S2SV_ModEnd> , t } <S2SV_ModStart> ! dry_run ) td -> counts -> <S2SV_ModEnd> skip [ ctx <S2SV_ModStart> bsize ) ; <S2SV_ModEnd> return ; } <S2SV_ModStart> dry_run ) { td -> counts -> <S2SV_ModEnd> skip [ ctx <S2SV_ModStart> arg ) ; <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7191\n\n```\nCWE-476 static int tun_set_iff ( struct net * net , struct file * file , struct ifreq * ifr ) { struct tun_struct * tun ; struct tun_file * tfile = file -> private_data ; struct net_device * dev ; int err ; if ( tfile -> detached ) return - EINVAL ; dev = __dev_get_by_name ( net , ifr -> ifr_name ) ; if ( dev ) { if ( ifr -> ifr_flags & IFF_TUN_EXCL ) return - EBUSY ; if ( ( ifr -> ifr_flags & IFF_TUN ) && dev -> netdev_ops == & tun_netdev_ops ) tun = netdev_priv ( dev ) ; else if ( ( ifr -> ifr_flags & IFF_TAP ) && dev -> netdev_ops == & tap_netdev_ops ) tun = netdev_priv ( dev ) ; else return - EINVAL ; if ( ! ! ( ifr -> ifr_flags & IFF_MULTI_QUEUE ) != ! ! ( tun -> flags & IFF_MULTI_QUEUE ) ) return - EINVAL ; if ( tun_not_capable ( tun ) ) return - EPERM ; err = security_tun_dev_open ( tun -> security ) ; if ( err < 0 ) return err ; err = tun_attach ( tun , file , ifr -> ifr_flags & IFF_NOFILTER ) ; if ( err < 0 ) return err ; if ( tun -> flags & IFF_MULTI_QUEUE && ( tun -> numqueues + tun -> numdisabled > 1 ) ) { return 0 ; } } else { char * name ; unsigned long flags = 0 ; int queues = ifr -> ifr_flags & IFF_MULTI_QUEUE ? MAX_TAP_QUEUES : 1 ; if ( ! ns_capable ( net -> user_ns , CAP_NET_ADMIN ) ) return - EPERM ; err = security_tun_dev_create ( ) ; if ( err < 0 ) return err ; if ( ifr -> ifr_flags & IFF_TUN ) { flags |= IFF_TUN ; name = \"tun%d\" ; } else if ( ifr -> ifr_flags & IFF_TAP ) { flags |= IFF_TAP ; name = \"tap%d\" ; } else return - EINVAL ; if ( * ifr -> ifr_name ) name = ifr -> ifr_name ; dev = alloc_netdev_mqs ( sizeof ( struct tun_struct ) , name , NET_NAME_UNKNOWN , tun_setup , queues , queues ) ; if ( ! dev ) return - ENOMEM ; <S2SV_StartBug> dev_net_set ( dev , net ) ; <S2SV_EndBug> dev -> rtnl_link_ops = & tun_link_ops ; dev -> ifindex = tfile -> ifindex ; dev -> sysfs_groups [ 0 ] = & tun_attr_group ; tun = netdev_priv ( dev ) ; tun -> dev = dev ; tun -> flags = flags ; tun -> txflt . count = 0 ; tun -> vnet_hdr_sz = sizeof ( struct virtio_net_hdr ) ; tun -> align = NET_SKB_PAD ; tun -> filter_attached = false ; tun -> sndbuf = tfile -> socket . sk -> sk_sndbuf ; tun -> rx_batched = 0 ; tun -> pcpu_stats = netdev_alloc_pcpu_stats ( struct tun_pcpu_stats ) ; if ( ! tun -> pcpu_stats ) { err = - ENOMEM ; goto err_free_dev ; } spin_lock_init ( & tun -> lock ) ; err = security_tun_dev_alloc_security ( & tun -> security ) ; if ( err < 0 ) goto err_free_stat ; tun_net_init ( dev ) ; tun_flow_init ( tun ) ; dev -> hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | TUN_USER_FEATURES | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX ; dev -> features = dev -> hw_features | NETIF_F_LLTX ; dev -> vlan_features = dev -> features & ~ ( NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX ) ; INIT_LIST_HEAD ( & tun -> disabled ) ; err = tun_attach ( tun , file , false ) ; if ( err < 0 ) goto err_free_flow ; err = register_netdevice ( tun -> dev ) ; if ( err < 0 ) goto err_detach ; } netif_carrier_on ( tun -> dev ) ; tun_debug ( KERN_INFO , tun , \"tun_set_iff\\\\n\" ) ; tun -> flags = ( tun -> flags & ~ TUN_FEATURES ) | ( ifr -> ifr_flags & TUN_FEATURES ) ; if ( netif_running ( tun -> dev ) ) netif_tx_wake_all_queues ( tun -> dev ) ; strcpy ( ifr -> ifr_name , tun -> dev -> name ) ; return 0 ; err_detach : tun_detach_all ( dev ) ; goto err_free_dev ; err_free_flow : tun_flow_uninit ( tun ) ; security_tun_dev_free_security ( tun -> security ) ; err_free_stat : free_percpu ( tun -> pcpu_stats ) ; err_free_dev : free_netdev ( dev ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> - ENOMEM ; err = dev_get_valid_name ( net , dev , name ) ; if ( err ) goto err_free_dev ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-10887\n\n```\nCWE-125 int git_delta_apply ( void * * out , size_t * out_len , const unsigned char * base , size_t base_len , const unsigned char * delta , size_t delta_len ) { const unsigned char * delta_end = delta + delta_len ; size_t base_sz , res_sz , alloc_sz ; unsigned char * res_dp ; * out = NULL ; * out_len = 0 ; if ( ( hdr_sz ( & base_sz , & delta , delta_end ) < 0 ) || ( base_sz != base_len ) ) { giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta:<S2SV_blank>base<S2SV_blank>size<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>given<S2SV_blank>data\" ) ; return - 1 ; } if ( hdr_sz ( & res_sz , & delta , delta_end ) < 0 ) { giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta:<S2SV_blank>base<S2SV_blank>size<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>given<S2SV_blank>data\" ) ; return - 1 ; } GITERR_CHECK_ALLOC_ADD ( & alloc_sz , res_sz , 1 ) ; res_dp = git__malloc ( alloc_sz ) ; GITERR_CHECK_ALLOC ( res_dp ) ; res_dp [ res_sz ] = '\\\\0' ; * out = res_dp ; * out_len = res_sz ; while ( delta < delta_end ) { unsigned char cmd = * delta ++ ; if ( cmd & 0x80 ) { size_t off = 0 , len = 0 ; if ( cmd & 0x01 ) off = * delta ++ ; if ( cmd & 0x02 ) off |= * delta ++ << 8UL ; if ( cmd & 0x04 ) off |= * delta ++ << 16UL ; <S2SV_StartBug> if ( cmd & 0x08 ) off |= * delta ++ << 24UL ; <S2SV_EndBug> if ( cmd & 0x10 ) len = * delta ++ ; if ( cmd & 0x20 ) len |= * delta ++ << 8UL ; if ( cmd & 0x40 ) len |= * delta ++ << 16UL ; if ( ! len ) len = 0x10000 ; if ( base_len < off + len || res_sz < len ) goto fail ; memcpy ( res_dp , base + off , len ) ; res_dp += len ; res_sz -= len ; } else if ( cmd ) { if ( delta_end - delta < cmd || res_sz < cmd ) goto fail ; memcpy ( res_dp , delta , cmd ) ; delta += cmd ; res_dp += cmd ; res_sz -= cmd ; } else { goto fail ; } } if ( delta != delta_end || res_sz ) goto fail ; return 0 ; fail : git__free ( * out ) ; * out = NULL ; * out_len = 0 ; giterr_set ( GITERR_INVALID , \"failed<S2SV_blank>to<S2SV_blank>apply<S2SV_blank>delta\" ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) off |= ( ( unsigned ) <S2SV_ModStart> ++ << 24UL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11664\n\n```\nCWE-125 struct _mdi * _WM_ParseNewXmi ( uint8_t * xmi_data , uint32_t xmi_size ) { struct _mdi * xmi_mdi = NULL ; uint32_t xmi_tmpdata = 0 ; uint8_t xmi_formcnt = 0 ; uint32_t xmi_catlen = 0 ; uint32_t xmi_subformlen = 0 ; uint32_t i = 0 ; uint32_t j = 0 ; uint32_t xmi_evntlen = 0 ; uint32_t xmi_divisions = 60 ; uint32_t xmi_tempo = 500000 ; uint32_t xmi_sample_count = 0 ; float xmi_sample_count_f = 0.0 ; float xmi_sample_remainder = 0.0 ; float xmi_samples_per_delta_f = 0.0 ; uint8_t xmi_ch = 0 ; uint8_t xmi_note = 0 ; uint32_t * xmi_notelen = NULL ; uint32_t setup_ret = 0 ; uint32_t xmi_delta = 0 ; uint32_t xmi_lowestdelta = 0 ; uint32_t xmi_evnt_cnt = 0 ; if ( memcmp ( xmi_data , \"FORM\" , 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_XMI , NULL , 0 ) ; return NULL ; } xmi_data += 4 ; xmi_size -= 4 ; xmi_tmpdata = * xmi_data ++ << 24 ; xmi_tmpdata |= * xmi_data ++ << 16 ; xmi_tmpdata |= * xmi_data ++ << 8 ; xmi_tmpdata |= * xmi_data ++ ; xmi_size -= 4 ; if ( memcmp ( xmi_data , \"XDIRINFO\" , 8 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_XMI , NULL , 0 ) ; return NULL ; } xmi_data += 8 ; xmi_size -= 8 ; xmi_data += 4 ; xmi_size -= 4 ; xmi_formcnt = * xmi_data ++ ; if ( xmi_formcnt == 0 ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_XMI , NULL , 0 ) ; return NULL ; } xmi_size -- ; xmi_tmpdata -= 13 ; xmi_data += xmi_tmpdata ; xmi_size -= xmi_tmpdata ; if ( memcmp ( xmi_data , \"CAT<S2SV_blank>\" , 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_XMI , NULL , 0 ) ; return NULL ; } xmi_data += 4 ; xmi_size -= 4 ; xmi_catlen = * xmi_data ++ << 24 ; xmi_catlen |= * xmi_data ++ << 16 ; xmi_catlen |= * xmi_data ++ << 8 ; xmi_catlen |= * xmi_data ++ ; xmi_size -= 4 ; UNUSED ( xmi_catlen ) ; if ( memcmp ( xmi_data , \"XMID\" , 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_XMI , NULL , 0 ) ; return NULL ; } xmi_data += 4 ; xmi_size -= 4 ; xmi_mdi = _WM_initMDI ( ) ; _WM_midi_setup_divisions ( xmi_mdi , xmi_divisions ) ; _WM_midi_setup_tempo ( xmi_mdi , xmi_tempo ) ; xmi_samples_per_delta_f = _WM_GetSamplesPerTick ( xmi_divisions , xmi_tempo ) ; xmi_notelen = malloc ( sizeof ( uint32_t ) * 16 * 128 ) ; memset ( xmi_notelen , 0 , ( sizeof ( uint32_t ) * 16 * 128 ) ) ; for ( i = 0 ; i < xmi_formcnt ; i ++ ) { if ( memcmp ( xmi_data , \"FORM\" , 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_XMI , NULL , 0 ) ; goto _xmi_end ; } xmi_data += 4 ; xmi_size -= 4 ; xmi_subformlen = * xmi_data ++ << 24 ; xmi_subformlen |= * xmi_data ++ << 16 ; xmi_subformlen |= * xmi_data ++ << 8 ; xmi_subformlen |= * xmi_data ++ ; xmi_size -= 4 ; if ( memcmp ( xmi_data , \"XMID\" , 4 ) ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_XMI , NULL , 0 ) ; goto _xmi_end ; } xmi_data += 4 ; xmi_size -= 4 ; xmi_subformlen -= 4 ; do { if ( ! memcmp ( xmi_data , \"TIMB\" , 4 ) ) { xmi_data += 4 ; xmi_tmpdata = * xmi_data ++ << 24 ; xmi_tmpdata |= * xmi_data ++ << 16 ; xmi_tmpdata |= * xmi_data ++ << 8 ; xmi_tmpdata |= * xmi_data ++ ; xmi_data += xmi_tmpdata ; xmi_size -= ( 8 + xmi_tmpdata ) ; xmi_subformlen -= ( 8 + xmi_tmpdata ) ; } else if ( ! memcmp ( xmi_data , \"RBRN\" , 4 ) ) { xmi_data += 4 ; xmi_tmpdata = * xmi_data ++ << 24 ; xmi_tmpdata |= * xmi_data ++ << 16 ; xmi_tmpdata |= * xmi_data ++ << 8 ; xmi_tmpdata |= * xmi_data ++ ; xmi_data += xmi_tmpdata ; xmi_size -= ( 8 + xmi_tmpdata ) ; xmi_subformlen -= ( 8 + xmi_tmpdata ) ; } else if ( ! memcmp ( xmi_data , \"EVNT\" , 4 ) ) { xmi_data += 4 ; xmi_evnt_cnt ++ ; xmi_evntlen = * xmi_data ++ << 24 ; xmi_evntlen |= * xmi_data ++ << 16 ; xmi_evntlen |= * xmi_data ++ << 8 ; xmi_evntlen |= * xmi_data ++ ; xmi_size -= 8 ; xmi_subformlen -= 8 ; do { if ( * xmi_data < 0x80 ) { xmi_delta = 0 ; if ( * xmi_data > 0x7f ) { while ( * xmi_data > 0x7f ) { xmi_delta = ( xmi_delta << 7 ) | ( * xmi_data ++ & 0x7f ) ; xmi_size -- ; xmi_evntlen -- ; xmi_subformlen -- ; } } xmi_delta = ( xmi_delta << 7 ) | ( * xmi_data ++ & 0x7f ) ; xmi_size -- ; xmi_evntlen -- ; xmi_subformlen -- ; do { if ( ( xmi_lowestdelta != 0 ) && ( xmi_lowestdelta <= xmi_delta ) ) { xmi_tmpdata = xmi_lowestdelta ; } else { xmi_tmpdata = xmi_delta ; } xmi_sample_count_f = ( ( ( float ) xmi_tmpdata * xmi_samples_per_delta_f ) + xmi_sample_remainder ) ; xmi_sample_count = ( uint32_t ) xmi_sample_count_f ; xmi_sample_remainder = xmi_sample_count_f - ( float ) xmi_sample_count ; xmi_mdi -> events [ xmi_mdi -> event_count - 1 ] . samples_to_next += xmi_sample_count ; xmi_mdi -> extra_info . approx_total_samples += xmi_sample_count ; xmi_lowestdelta = 0 ; for ( j = 0 ; j < ( 16 * 128 ) ; j ++ ) { if ( xmi_notelen [ j ] == 0 ) continue ; xmi_notelen [ j ] -= xmi_tmpdata ; if ( xmi_notelen [ j ] == 0 ) { xmi_ch = j / 128 ; xmi_note = j - ( xmi_ch * 128 ) ; _WM_midi_setup_noteoff ( xmi_mdi , xmi_ch , xmi_note , 0 ) ; } else { if ( ( xmi_lowestdelta == 0 ) || ( xmi_lowestdelta > xmi_notelen [ j ] ) ) { xmi_lowestdelta = xmi_notelen [ j ] ; } } } xmi_delta -= xmi_tmpdata ; } while ( xmi_delta ) ; } else { if ( ( xmi_data [ 0 ] == 0xff ) && ( xmi_data [ 1 ] == 0x51 ) && ( xmi_data [ 2 ] == 0x03 ) ) { setup_ret = 6 ; goto _XMI_Next_Event ; } <S2SV_StartBug> if ( ( setup_ret = _WM_SetupMidiEvent ( xmi_mdi , xmi_data , 0 ) ) == 0 ) { <S2SV_EndBug> goto _xmi_end ; } if ( ( * xmi_data & 0xf0 ) == 0x90 ) { xmi_ch = * xmi_data & 0x0f ; xmi_note = xmi_data [ 1 ] ; xmi_data += setup_ret ; xmi_size -= setup_ret ; xmi_evntlen -= setup_ret ; xmi_subformlen -= setup_ret ; xmi_tmpdata = 0 ; if ( * xmi_data > 0x7f ) { while ( * xmi_data > 0x7f ) { xmi_tmpdata = ( xmi_tmpdata << 7 ) | ( * xmi_data ++ & 0x7f ) ; xmi_size -- ; xmi_evntlen -- ; xmi_subformlen -- ; } } xmi_tmpdata = ( xmi_tmpdata << 7 ) | ( * xmi_data ++ & 0x7f ) ; xmi_size -- ; xmi_evntlen -- ; xmi_subformlen -- ; xmi_notelen [ 128 * xmi_ch + xmi_note ] = xmi_tmpdata ; if ( ( xmi_tmpdata > 0 ) && ( ( xmi_lowestdelta == 0 ) || ( xmi_tmpdata < xmi_lowestdelta ) ) ) { xmi_lowestdelta = xmi_tmpdata ; } } else { _XMI_Next_Event : xmi_data += setup_ret ; xmi_size -= setup_ret ; xmi_evntlen -= setup_ret ; xmi_subformlen -= setup_ret ; } } } while ( xmi_evntlen ) ; } else { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_NOT_XMI , NULL , 0 ) ; goto _xmi_end ; } } while ( xmi_subformlen ) ; } if ( ( xmi_mdi -> reverb = _WM_init_reverb ( _WM_SampleRate , _WM_reverb_room_width , _WM_reverb_room_length , _WM_reverb_listen_posx , _WM_reverb_listen_posy ) ) == NULL ) { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_MEM , \"to<S2SV_blank>init<S2SV_blank>reverb\" , 0 ) ; goto _xmi_end ; } xmi_mdi -> extra_info . current_sample = 0 ; xmi_mdi -> current_event = & xmi_mdi -> events [ 0 ] ; xmi_mdi -> samples_to_mix = 0 ; xmi_mdi -> note = NULL ; if ( xmi_evnt_cnt > 1 ) { xmi_mdi -> is_type2 = 1 ; } _WM_ResetToStart ( xmi_mdi ) ; _xmi_end : if ( xmi_notelen != NULL ) free ( xmi_notelen ) ; if ( xmi_mdi -> reverb ) return ( xmi_mdi ) ; _WM_freeMDI ( xmi_mdi ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , xmi_data , xmi_size ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11368\n\n```\nCWE-617 krb5_error_code kdc_process_s4u2proxy_req ( kdc_realm_t * kdc_active_realm , krb5_kdc_req * request , const krb5_enc_tkt_part * t2enc , const krb5_db_entry * server , krb5_const_principal server_princ , krb5_const_principal proxy_princ , const char * * status ) { krb5_error_code errcode ; if ( request -> kdc_options & ( NON_TGT_OPTION | KDC_OPT_ENC_TKT_IN_SKEY ) ) { <S2SV_StartBug> return KRB5KDC_ERR_BADOPTION ; <S2SV_EndBug> } if ( ! krb5_principal_compare ( kdc_context , server -> princ , <S2SV_StartBug> server_princ ) ) { <S2SV_EndBug> return KRB5KDC_ERR_SERVER_NOMATCH ; } if ( ! isflagset ( t2enc -> flags , TKT_FLG_FORWARDABLE ) ) { * status = \"EVIDENCE_TKT_NOT_FORWARDABLE\" ; return KRB5_TKT_NOT_FORWARDABLE ; } errcode = check_allowed_to_delegate_to ( kdc_context , t2enc -> client , server , proxy_princ ) ; if ( errcode ) { * status = \"NOT_ALLOWED_TO_DELEGATE\" ; return errcode ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) { * status = \"INVALID_S4U2PROXY_OPTIONS\" ; <S2SV_ModStart> ) ) { * status = \"EVIDENCE_TICKET_MISMATCH\" ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void record_and_restart ( struct perf_event * event , unsigned long val , <S2SV_StartBug> struct pt_regs * regs , int nmi ) <S2SV_EndBug> { u64 period = event -> hw . sample_period ; s64 prev , delta , left ; int record = 0 ; if ( event -> hw . state & PERF_HES_STOPPED ) { write_pmc ( event -> hw . idx , 0 ) ; return ; } prev = local64_read ( & event -> hw . prev_count ) ; delta = check_and_compute_delta ( prev , val ) ; local64_add ( delta , & event -> count ) ; val = 0 ; left = local64_read ( & event -> hw . period_left ) - delta ; if ( period ) { if ( left <= 0 ) { left += period ; if ( left <= 0 ) left = period ; record = 1 ; event -> hw . last_period = event -> hw . sample_period ; } if ( left < 0x80000000LL ) val = 0x80000000LL - left ; } write_pmc ( event -> hw . idx , val ) ; local64_set ( & event -> hw . prev_count , val ) ; local64_set ( & event -> hw . period_left , left ) ; perf_event_update_userpage ( event ) ; if ( record ) { struct perf_sample_data data ; perf_sample_data_init ( & data , ~ 0ULL ) ; data . period = event -> hw . last_period ; if ( event -> attr . sample_type & PERF_SAMPLE_ADDR ) perf_get_data_addr ( regs , & data . addr ) ; <S2SV_StartBug> if ( perf_event_overflow ( event , nmi , & data , regs ) ) <S2SV_EndBug> power_pmu_stop ( event , 0 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pt_regs * regs <S2SV_ModEnd> ) { u64 <S2SV_ModStart> ( event , <S2SV_ModEnd> & data ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7015\n\n```\nCWE-20 static int flashsv_decode_frame ( AVCodecContext * avctx , void * data , int * got_frame , AVPacket * avpkt ) { int buf_size = avpkt -> size ; FlashSVContext * s = avctx -> priv_data ; int h_blocks , v_blocks , h_part , v_part , i , j , ret ; GetBitContext gb ; int last_blockwidth = s -> block_width ; int last_blockheight = s -> block_height ; if ( buf_size == 0 ) return 0 ; if ( buf_size < 4 ) return - 1 ; init_get_bits ( & gb , avpkt -> data , buf_size * 8 ) ; s -> block_width = 16 * ( get_bits ( & gb , 4 ) + 1 ) ; s -> image_width = get_bits ( & gb , 12 ) ; s -> block_height = 16 * ( get_bits ( & gb , 4 ) + 1 ) ; s -> image_height = get_bits ( & gb , 12 ) ; if ( last_blockwidth != s -> block_width || last_blockheight != s -> block_height ) av_freep ( & s -> blocks ) ; if ( s -> ver == 2 ) { skip_bits ( & gb , 6 ) ; if ( get_bits1 ( & gb ) ) { avpriv_request_sample ( avctx , \"iframe\" ) ; return AVERROR_PATCHWELCOME ; } if ( get_bits1 ( & gb ) ) { avpriv_request_sample ( avctx , \"Custom<S2SV_blank>palette\" ) ; return AVERROR_PATCHWELCOME ; } } h_blocks = s -> image_width / s -> block_width ; h_part = s -> image_width % s -> block_width ; v_blocks = s -> image_height / s -> block_height ; v_part = s -> image_height % s -> block_height ; if ( s -> block_size < s -> block_width * s -> block_height ) { int tmpblock_size = 3 * s -> block_width * s -> block_height ; s -> tmpblock = av_realloc ( s -> tmpblock , tmpblock_size ) ; if ( ! s -> tmpblock ) { av_log ( avctx , AV_LOG_ERROR , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>decompression<S2SV_blank>buffer.\\\\n\" ) ; return AVERROR ( ENOMEM ) ; } if ( s -> ver == 2 ) { s -> deflate_block_size = calc_deflate_block_size ( tmpblock_size ) ; if ( s -> deflate_block_size <= 0 ) { av_log ( avctx , AV_LOG_ERROR , \"Can\\'t<S2SV_blank>determine<S2SV_blank>deflate<S2SV_blank>buffer<S2SV_blank>size.\\\\n\" ) ; return - 1 ; } s -> deflate_block = av_realloc ( s -> deflate_block , s -> deflate_block_size ) ; if ( ! s -> deflate_block ) { av_log ( avctx , AV_LOG_ERROR , \"Can\\'t<S2SV_blank>allocate<S2SV_blank>deflate<S2SV_blank>buffer.\\\\n\" ) ; return AVERROR ( ENOMEM ) ; } } } s -> block_size = s -> block_width * s -> block_height ; if ( avctx -> width == 0 && avctx -> height == 0 ) { avcodec_set_dimensions ( avctx , s -> image_width , s -> image_height ) ; } if ( avctx -> width != s -> image_width || avctx -> height != s -> image_height ) { av_log ( avctx , AV_LOG_ERROR , \"Frame<S2SV_blank>width<S2SV_blank>or<S2SV_blank>height<S2SV_blank>differs<S2SV_blank>from<S2SV_blank>first<S2SV_blank>frame!\\\\n\" ) ; av_log ( avctx , AV_LOG_ERROR , \"fh<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>fv<S2SV_blank>%d<S2SV_blank><S2SV_blank>vs<S2SV_blank><S2SV_blank>ch<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>cv<S2SV_blank>=<S2SV_blank>%d\\\\n\" , avctx -> height , avctx -> width , s -> image_height , s -> image_width ) ; return AVERROR_INVALIDDATA ; } s -> is_keyframe = ( avpkt -> flags & AV_PKT_FLAG_KEY ) && ( s -> ver == 2 ) ; if ( s -> is_keyframe ) { s -> keyframedata = av_realloc ( s -> keyframedata , avpkt -> size ) ; memcpy ( s -> keyframedata , avpkt -> data , avpkt -> size ) ; } if ( s -> ver == 2 && ! s -> blocks ) s -> blocks = av_mallocz ( ( v_blocks + ! ! v_part ) * ( h_blocks + ! ! h_part ) * sizeof ( s -> blocks [ 0 ] ) ) ; av_dlog ( avctx , \"image:<S2SV_blank>%dx%d<S2SV_blank>block:<S2SV_blank>%dx%d<S2SV_blank>num:<S2SV_blank>%dx%d<S2SV_blank>part:<S2SV_blank>%dx%d\\\\n\" , s -> image_width , s -> image_height , s -> block_width , s -> block_height , h_blocks , v_blocks , h_part , v_part ) ; if ( ( ret = ff_reget_buffer ( avctx , & s -> frame ) ) < 0 ) return ret ; for ( j = 0 ; j < v_blocks + ( v_part ? 1 : 0 ) ; j ++ ) { int y_pos = j * s -> block_height ; int cur_blk_height = ( j < v_blocks ) ? s -> block_height : v_part ; for ( i = 0 ; i < h_blocks + ( h_part ? 1 : 0 ) ; i ++ ) { int x_pos = i * s -> block_width ; int cur_blk_width = ( i < h_blocks ) ? s -> block_width : h_part ; int has_diff = 0 ; int size = get_bits ( & gb , 16 ) ; s -> color_depth = 0 ; s -> zlibprime_curr = 0 ; s -> zlibprime_prev = 0 ; s -> diff_start = 0 ; s -> diff_height = cur_blk_height ; if ( 8 * size > get_bits_left ( & gb ) ) { av_frame_unref ( & s -> frame ) ; return AVERROR_INVALIDDATA ; } if ( s -> ver == 2 && size ) { skip_bits ( & gb , 3 ) ; s -> color_depth = get_bits ( & gb , 2 ) ; has_diff = get_bits1 ( & gb ) ; s -> zlibprime_curr = get_bits1 ( & gb ) ; s -> zlibprime_prev = get_bits1 ( & gb ) ; if ( s -> color_depth != 0 && s -> color_depth != 2 ) { av_log ( avctx , AV_LOG_ERROR , \"%dx%d<S2SV_blank>invalid<S2SV_blank>color<S2SV_blank>depth<S2SV_blank>%d\\\\n\" , i , j , s -> color_depth ) ; return AVERROR_INVALIDDATA ; } if ( has_diff ) { if ( ! s -> keyframe ) { av_log ( avctx , AV_LOG_ERROR , \"inter<S2SV_blank>frame<S2SV_blank>without<S2SV_blank>keyframe\\\\n\" ) ; return AVERROR_INVALIDDATA ; } s -> diff_start = get_bits ( & gb , 8 ) ; s -> diff_height = get_bits ( & gb , 8 ) ; <S2SV_StartBug> av_log ( avctx , AV_LOG_DEBUG , <S2SV_EndBug> \"%dx%d<S2SV_blank>diff<S2SV_blank>start<S2SV_blank>%d<S2SV_blank>height<S2SV_blank>%d\\\\n\" , i , j , s -> diff_start , s -> diff_height ) ; size -= 2 ; } if ( s -> zlibprime_prev ) av_log ( avctx , AV_LOG_DEBUG , \"%dx%d<S2SV_blank>zlibprime_prev\\\\n\" , i , j ) ; if ( s -> zlibprime_curr ) { int col = get_bits ( & gb , 8 ) ; int row = get_bits ( & gb , 8 ) ; av_log ( avctx , AV_LOG_DEBUG , \"%dx%d<S2SV_blank>zlibprime_curr<S2SV_blank>%dx%d\\\\n\" , i , j , col , row ) ; size -= 2 ; avpriv_request_sample ( avctx , \"zlibprime_curr\" ) ; return AVERROR_PATCHWELCOME ; } if ( ! s -> blocks && ( s -> zlibprime_curr || s -> zlibprime_prev ) ) { av_log ( avctx , AV_LOG_ERROR , \"no<S2SV_blank>data<S2SV_blank>available<S2SV_blank>for<S2SV_blank>zlib<S2SV_blank>\" \"priming\\\\n\" ) ; return AVERROR_INVALIDDATA ; } size -- ; } if ( has_diff ) { int k ; int off = ( s -> image_height - y_pos - 1 ) * s -> frame . linesize [ 0 ] ; for ( k = 0 ; k < cur_blk_height ; k ++ ) memcpy ( s -> frame . data [ 0 ] + off - k * s -> frame . linesize [ 0 ] + x_pos * 3 , s -> keyframe + off - k * s -> frame . linesize [ 0 ] + x_pos * 3 , cur_blk_width * 3 ) ; } if ( size ) { if ( flashsv_decode_block ( avctx , avpkt , & gb , size , cur_blk_width , cur_blk_height , x_pos , y_pos , i + j * ( h_blocks + ! ! h_part ) ) ) av_log ( avctx , AV_LOG_ERROR , \"error<S2SV_blank>in<S2SV_blank>decompression<S2SV_blank>of<S2SV_blank>block<S2SV_blank>%dx%d\\\\n\" , i , j ) ; } } } if ( s -> is_keyframe && s -> ver == 2 ) { if ( ! s -> keyframe ) { s -> keyframe = av_malloc ( s -> frame . linesize [ 0 ] * avctx -> height ) ; if ( ! s -> keyframe ) { av_log ( avctx , AV_LOG_ERROR , \"Cannot<S2SV_blank>allocate<S2SV_blank>image<S2SV_blank>data\\\\n\" ) ; return AVERROR ( ENOMEM ) ; } } memcpy ( s -> keyframe , s -> frame . data [ 0 ] , s -> frame . linesize [ 0 ] * avctx -> height ) ; } if ( ( ret = av_frame_ref ( data , & s -> frame ) ) < 0 ) return ret ; * got_frame = 1 ; if ( ( get_bits_count ( & gb ) / 8 ) != buf_size ) av_log ( avctx , AV_LOG_ERROR , \"buffer<S2SV_blank>not<S2SV_blank>fully<S2SV_blank>consumed<S2SV_blank>(%d<S2SV_blank>!=<S2SV_blank>%d)\\\\n\" , buf_size , ( get_bits_count ( & gb ) / 8 ) ) ; return buf_size ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 8 ) ; if ( s -> diff_start + s -> diff_height > cur_blk_height ) { av_log ( avctx , AV_LOG_ERROR , \"Block<S2SV_blank>parameters<S2SV_blank>invalid\\\\n\" ) ; return AVERROR_INVALIDDATA ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-6516\n\n```\nCWE-119 static long ioctl_file_dedupe_range ( struct file * file , void __user * arg ) { struct file_dedupe_range __user * argp = arg ; struct file_dedupe_range * same = NULL ; int ret ; unsigned long size ; u16 count ; if ( get_user ( count , & argp -> dest_count ) ) { ret = - EFAULT ; goto out ; } size = offsetof ( struct file_dedupe_range __user , info [ count ] ) ; same = memdup_user ( argp , size ) ; if ( IS_ERR ( same ) ) { ret = PTR_ERR ( same ) ; same = NULL ; goto out ; } <S2SV_StartBug> ret = vfs_dedupe_file_range ( file , same ) ; <S2SV_EndBug> if ( ret ) goto out ; ret = copy_to_user ( argp , same , size ) ; if ( ret ) ret = - EFAULT ; out : kfree ( same ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> out ; } same -> dest_count = count ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13039\n\n```\nCWE-125 static const u_char * ikev2_t_print ( netdissect_options * ndo , int tcount , const struct isakmp_gen * ext , u_int item_len , const u_char * ep ) { const struct ikev2_t * p ; struct ikev2_t t ; uint16_t t_id ; const u_char * cp ; const char * idstr ; const struct attrmap * map ; size_t nmap ; const u_char * ep2 ; p = ( const struct ikev2_t * ) ext ; ND_TCHECK ( * p ) ; UNALIGNED_MEMCPY ( & t , ext , sizeof ( t ) ) ; ikev2_pay_print ( ndo , NPSTR ( ISAKMP_NPTYPE_T ) , t . h . critical ) ; t_id = ntohs ( t . t_id ) ; map = NULL ; nmap = 0 ; switch ( t . t_type ) { case IV2_T_ENCR : idstr = STR_OR_ID ( t_id , esp_p_map ) ; map = encr_t_map ; nmap = sizeof ( encr_t_map ) / sizeof ( encr_t_map [ 0 ] ) ; break ; case IV2_T_PRF : idstr = STR_OR_ID ( t_id , prf_p_map ) ; break ; case IV2_T_INTEG : idstr = STR_OR_ID ( t_id , integ_p_map ) ; break ; case IV2_T_DH : idstr = STR_OR_ID ( t_id , dh_p_map ) ; break ; case IV2_T_ESN : idstr = STR_OR_ID ( t_id , esn_p_map ) ; break ; default : idstr = NULL ; break ; } if ( idstr ) ND_PRINT ( ( ndo , \"<S2SV_blank>#%u<S2SV_blank>type=%s<S2SV_blank>id=%s<S2SV_blank>\" , tcount , STR_OR_ID ( t . t_type , ikev2_t_type_map ) , idstr ) ) ; else ND_PRINT ( ( ndo , \"<S2SV_blank>#%u<S2SV_blank>type=%s<S2SV_blank>id=%u<S2SV_blank>\" , tcount , STR_OR_ID ( t . t_type , ikev2_t_type_map ) , t . t_id ) ) ; cp = ( const u_char * ) ( p + 1 ) ; ep2 = ( const u_char * ) p + item_len ; while ( cp < ep && cp < ep2 ) { if ( map && nmap ) { <S2SV_StartBug> cp = ikev1_attrmap_print ( ndo , cp , ( ep < ep2 ) ? ep : ep2 , <S2SV_EndBug> map , nmap ) ; } else cp = ikev1_attr_print ( ndo , cp , ( ep < ep2 ) ? ep : ep2 ) ; } if ( ep < ep2 ) ND_PRINT ( ( ndo , \"...\" ) ) ; return cp ; trunc : ND_PRINT ( ( ndo , \"<S2SV_blank>[|%s]\" , NPSTR ( ISAKMP_NPTYPE_T ) ) ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , cp , ep2 , map , nmap ) ; } else cp = ikev1_attr_print ( ndo , cp , ep2 ) ; if ( cp == NULL ) goto trunc ; } if <S2SV_ModStart> < ep2 ) <S2SV_ModEnd> ND_PRINT ( (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0268\n\n```\nCWE-264 static int msr_open ( struct inode * inode , struct file * file ) { unsigned int cpu ; <S2SV_StartBug> struct cpuinfo_x86 * c ; <S2SV_EndBug> cpu = iminor ( file -> f_path . dentry -> d_inode ) ; if ( cpu >= nr_cpu_ids || ! cpu_online ( cpu ) ) return - ENXIO ; c = & cpu_data ( cpu ) ; if ( ! cpu_has ( c , X86_FEATURE_MSR ) ) return - EIO ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cpuinfo_x86 * c ; if ( ! capable ( CAP_SYS_RAWIO ) ) return - EPERM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 static void bond_setup ( struct net_device * bond_dev ) { struct bonding * bond = netdev_priv ( bond_dev ) ; rwlock_init ( & bond -> lock ) ; rwlock_init ( & bond -> curr_slave_lock ) ; bond -> params = bonding_defaults ; bond -> dev = bond_dev ; INIT_LIST_HEAD ( & bond -> vlan_list ) ; ether_setup ( bond_dev ) ; bond_dev -> netdev_ops = & bond_netdev_ops ; bond_dev -> ethtool_ops = & bond_ethtool_ops ; bond_set_mode_ops ( bond , bond -> params . mode ) ; bond_dev -> destructor = bond_destructor ; bond_dev -> tx_queue_len = 0 ; bond_dev -> flags |= IFF_MASTER | IFF_MULTICAST ; bond_dev -> priv_flags |= IFF_BONDING ; <S2SV_StartBug> bond_dev -> priv_flags &= ~ IFF_XMIT_DST_RELEASE ; <S2SV_EndBug> bond_dev -> features |= NETIF_F_VLAN_CHALLENGED ; bond_dev -> features |= NETIF_F_LLTX ; bond_dev -> hw_features = BOND_VLAN_FEATURES | NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER ; bond_dev -> hw_features &= ~ ( NETIF_F_ALL_CSUM & ~ NETIF_F_NO_CSUM ) ; bond_dev -> features |= bond_dev -> hw_features ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> priv_flags &= ~ ( IFF_XMIT_DST_RELEASE | IFF_TX_SKB_SHARING ) <S2SV_ModEnd> ; bond_dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_receive_compressed_data ( VP9Decoder * pbi , <S2SV_StartBug> size_t size , const uint8_t * * psource , <S2SV_EndBug> int64_t time_stamp ) { <S2SV_StartBug> VP9_COMMON * const cm = & pbi -> common ; <S2SV_EndBug> const uint8_t * source = * psource ; int retcode = 0 ; cm -> error . error_code = VPX_CODEC_OK ; if ( size == 0 ) { <S2SV_StartBug> if ( cm -> frame_refs [ 0 ] . idx != INT_MAX ) <S2SV_EndBug> cm -> frame_refs [ 0 ] . buf -> corrupted = 1 ; } <S2SV_StartBug> if ( cm -> new_fb_idx >= 0 && cm -> frame_bufs [ cm -> new_fb_idx ] . ref_count == 0 ) <S2SV_EndBug> <S2SV_StartBug> cm -> release_fb_cb ( cm -> cb_priv , <S2SV_EndBug> <S2SV_StartBug> & cm -> frame_bufs [ cm -> new_fb_idx ] . raw_frame_buffer ) ; <S2SV_EndBug> cm -> new_fb_idx = get_free_fb ( cm ) ; <S2SV_StartBug> if ( setjmp ( cm -> error . jmp ) ) { <S2SV_EndBug> <S2SV_StartBug> cm -> error . setjmp = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( cm -> frame_refs [ 0 ] . idx != INT_MAX ) <S2SV_EndBug> cm -> frame_refs [ 0 ] . buf -> corrupted = 1 ; if ( cm -> frame_bufs [ cm -> new_fb_idx ] . ref_count > 0 ) cm -> frame_bufs [ cm -> new_fb_idx ] . ref_count -- ; return - 1 ; } cm -> error . setjmp = 1 ; <S2SV_StartBug> retcode = vp9_decode_frame ( pbi , source , source + size , psource ) ; <S2SV_EndBug> <S2SV_StartBug> if ( retcode < 0 ) { <S2SV_EndBug> <S2SV_StartBug> cm -> error . error_code = VPX_CODEC_ERROR ; <S2SV_EndBug> <S2SV_StartBug> cm -> error . setjmp = 0 ; <S2SV_EndBug> if ( cm -> frame_bufs [ cm -> new_fb_idx ] . ref_count > 0 ) cm -> frame_bufs [ cm -> new_fb_idx ] . ref_count -- ; return retcode ; } <S2SV_StartBug> swap_frame_buffers ( pbi ) ; <S2SV_EndBug> # if WRITE_RECON_BUFFER == 2 if ( cm -> show_frame ) write_dx_frame_to_file ( cm -> frame_to_show , cm -> current_video_frame ) ; else write_dx_frame_to_file ( cm -> frame_to_show , cm -> current_video_frame + 1000 ) ; # endif if ( ! pbi -> do_loopfilter_inline ) { if ( pbi -> num_tile_workers ) { vp9_loop_filter_frame_mt ( pbi , cm , & pbi -> mb , cm -> lf . filter_level , 0 , 0 ) ; } else { vp9_loop_filter_frame ( cm , & pbi -> mb , cm -> lf . filter_level , 0 , 0 ) ; } } # if WRITE_RECON_BUFFER == 2 if ( cm -> show_frame ) write_dx_frame_to_file ( cm -> frame_to_show , cm -> current_video_frame + 2000 ) ; else write_dx_frame_to_file ( cm -> frame_to_show , cm -> current_video_frame + 3000 ) ; # endif # if WRITE_RECON_BUFFER == 1 if ( cm -> show_frame ) recon_write_yuv_frame ( \"recon.yuv\" , cm -> frame_to_show , cm -> width , cm -> height ) ; # endif vp9_clear_system_state ( ) ; cm -> last_width = cm -> width ; cm -> last_height = cm -> height ; if ( ! cm -> show_existing_frame ) cm -> last_show_frame = cm -> show_frame ; if ( cm -> show_frame ) { if ( ! cm -> show_existing_frame ) vp9_swap_mi_and_prev_mi ( cm ) ; cm -> current_video_frame ++ ; } pbi -> ready_for_new_data = 0 ; pbi -> last_time_stamp = time_stamp ; cm -> error . setjmp = 0 ; return retcode ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * * psource <S2SV_ModEnd> ) { VP9_COMMON <S2SV_ModStart> { VP9_COMMON * volatile <S2SV_ModStart> pbi -> common ; BufferPool * volatile const pool = cm -> buffer_pool ; RefCntBuffer * volatile const frame_bufs = cm -> buffer_pool -> frame_bufs <S2SV_ModStart> ] . idx > 0 ) { assert ( cm -> frame_refs [ 0 ] . buf != NULL ) ; <S2SV_ModEnd> cm -> frame_refs <S2SV_ModStart> 1 ; } } pbi -> ready_for_new_data = 0 ; if ( ! pbi -> frame_parallel_decode && <S2SV_ModEnd> cm -> new_fb_idx <S2SV_ModStart> >= 0 && <S2SV_ModEnd> frame_bufs [ cm <S2SV_ModStart> == 0 ) pool <S2SV_ModEnd> -> release_fb_cb ( <S2SV_ModStart> -> release_fb_cb ( pool <S2SV_ModEnd> -> cb_priv , <S2SV_ModStart> cb_priv , & <S2SV_ModEnd> frame_bufs [ cm <S2SV_ModStart> ; if ( cm -> new_fb_idx == INVALID_IDX ) return VPX_CODEC_MEM_ERROR ; cm -> cur_frame = & pool -> frame_bufs [ cm -> new_fb_idx ] ; pbi -> hold_ref_buf = 0 ; if ( pbi -> frame_parallel_decode ) { VPxWorker * const worker = pbi -> frame_worker_owner ; vp9_frameworker_lock_stats ( worker ) ; frame_bufs [ cm -> new_fb_idx ] . frame_worker_owner = worker ; pbi -> cur_buf = & frame_bufs [ cm -> new_fb_idx ] ; pbi -> cur_buf -> row = - 1 ; pbi -> cur_buf -> col = - 1 ; vp9_frameworker_unlock_stats ( worker ) ; } else { pbi -> cur_buf = & frame_bufs [ cm -> new_fb_idx ] ; } if ( <S2SV_ModStart> ) ) { const VPxWorkerInterface * const winterface = vpx_get_worker_interface ( ) ; int i ; <S2SV_ModStart> = 0 ; pbi -> ready_for_new_data = 1 ; winterface -> sync ( & pbi -> lf_worker ) ; for ( i = 0 ; i < pbi -> num_tile_workers ; ++ i ) { winterface -> sync ( & pbi -> tile_workers [ i ] ) ; } lock_buffer_pool ( pool ) ; if ( pbi -> hold_ref_buf == 1 ) { int ref_index = 0 , mask ; for ( mask = pbi -> refresh_frame_flags ; mask ; mask >>= 1 ) { const int old_idx = cm -> ref_frame_map [ ref_index ] ; decrease_ref_count ( old_idx , frame_bufs , pool ) ; if ( ( mask & 1 ) && old_idx >= 0 ) { decrease_ref_count ( old_idx , frame_bufs , pool ) ; } ++ ref_index ; } for ( ; ref_index < REF_FRAMES && ! cm -> show_existing_frame ; ++ ref_index ) { const int old_idx = cm -> ref_frame_map [ ref_index ] ; decrease_ref_count ( old_idx , frame_bufs , pool ) ; } pbi -> hold_ref_buf = 0 ; } decrease_ref_count ( cm -> new_fb_idx , frame_bufs , pool ) ; unlock_buffer_pool ( pool ) ; vpx_clear_system_state ( ) <S2SV_ModEnd> ; return - <S2SV_ModStart> = 1 ; <S2SV_ModEnd> vp9_decode_frame ( pbi <S2SV_ModStart> psource ) ; swap_frame_buffers ( pbi ) ; vpx_clear_system_state ( ) ; if ( ! cm -> show_existing_frame ) { cm -> last_show_frame = cm -> show_frame ; cm -> prev_frame = cm -> cur_frame ; if ( cm -> seg . enabled && ! pbi -> frame_parallel_decode ) vp9_swap_current_and_last_seg_map ( cm ) ; } if ( pbi -> frame_parallel_decode ) { VPxWorker * const worker = pbi -> frame_worker_owner ; FrameWorkerData * const frame_worker_data = worker -> data1 ; vp9_frameworker_lock_stats ( worker ) ; if ( cm -> show_frame ) { cm -> current_video_frame ++ ; } frame_worker_data -> frame_decoded = 1 ; frame_worker_data -> frame_context_ready = 1 ; vp9_frameworker_signal_stats ( worker ) ; vp9_frameworker_unlock_stats ( worker ) ; } else { cm -> last_width = cm -> width ; cm -> last_height = cm -> height ; if ( cm -> show_frame ) { cm -> current_video_frame ++ ; } } <S2SV_ModEnd> cm -> error <S2SV_ModStart> -> error . <S2SV_ModEnd> setjmp = 0 <S2SV_ModStart> setjmp = 0 <S2SV_ModEnd> ; return retcode <S2SV_ModStart> retcode ; } <S2SV_ModEnd> <S2SV_null> <S2SV_null> <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8294\n\n```\nCWE-125 int yr_execute_code ( YR_RULES * rules , YR_SCAN_CONTEXT * context , int timeout , time_t start_time ) { int64_t mem [ MEM_SIZE ] ; int32_t sp = 0 ; uint8_t * ip = rules -> code_start ; YR_VALUE args [ MAX_FUNCTION_ARGS ] ; YR_VALUE * stack ; YR_VALUE r1 ; YR_VALUE r2 ; YR_VALUE r3 ; # ifdef PROFILING_ENABLED YR_RULE * current_rule = NULL ; # endif YR_RULE * rule ; YR_MATCH * match ; YR_OBJECT_FUNCTION * function ; char * identifier ; char * args_fmt ; int i ; int found ; int count ; int result = ERROR_SUCCESS ; int stop = FALSE ; int cycle = 0 ; int tidx = context -> tidx ; int stack_size ; # ifdef PROFILING_ENABLED clock_t start = clock ( ) ; # endif yr_get_configuration ( YR_CONFIG_STACK_SIZE , ( void * ) & stack_size ) ; stack = ( YR_VALUE * ) yr_malloc ( stack_size * sizeof ( YR_VALUE ) ) ; if ( stack == NULL ) return ERROR_INSUFFICIENT_MEMORY ; while ( ! stop ) { switch ( * ip ) { case OP_HALT : assert ( sp == 0 ) ; stop = TRUE ; break ; case OP_PUSH : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; push ( r1 ) ; break ; case OP_POP : pop ( r1 ) ; break ; case OP_CLEAR_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; mem [ r1 . i ] = 0 ; break ; case OP_ADD_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; if ( ! is_undef ( r2 ) ) mem [ r1 . i ] += r2 . i ; break ; case OP_INCR_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; mem [ r1 . i ] ++ ; break ; case OP_PUSH_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . i = mem [ r1 . i ] ; push ( r1 ) ; break ; case OP_POP_M : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; mem [ r1 . i ] = r2 . i ; break ; case OP_SWAPUNDEF : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r2 ) ; if ( is_undef ( r2 ) ) { r1 . i = mem [ r1 . i ] ; push ( r1 ) ; } else { push ( r2 ) ; } break ; case OP_JNUNDEF : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( ! is_undef ( r1 ) , ip ) ; break ; case OP_JLE : pop ( r2 ) ; pop ( r1 ) ; push ( r1 ) ; push ( r2 ) ; ip = jmp_if ( r1 . i <= r2 . i , ip ) ; break ; case OP_JTRUE : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( ! is_undef ( r1 ) && r1 . i , ip ) ; break ; case OP_JFALSE : pop ( r1 ) ; push ( r1 ) ; ip = jmp_if ( is_undef ( r1 ) || ! r1 . i , ip ) ; break ; case OP_AND : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) || is_undef ( r2 ) ) r1 . i = 0 ; else r1 . i = r1 . i && r2 . i ; push ( r1 ) ; break ; case OP_OR : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) ) { push ( r2 ) ; } else if ( is_undef ( r2 ) ) { push ( r1 ) ; } else { r1 . i = r1 . i || r2 . i ; push ( r1 ) ; } break ; case OP_NOT : pop ( r1 ) ; if ( is_undef ( r1 ) ) r1 . i = UNDEFINED ; else r1 . i = ! r1 . i ; push ( r1 ) ; break ; case OP_MOD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r2 . i != 0 ) r1 . i = r1 . i % r2 . i ; else r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_SHR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i >> r2 . i ; push ( r1 ) ; break ; case OP_SHL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i << r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_NOT : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = ~ r1 . i ; push ( r1 ) ; break ; case OP_BITWISE_AND : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i & r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_OR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i | r2 . i ; push ( r1 ) ; break ; case OP_BITWISE_XOR : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i ^ r2 . i ; push ( r1 ) ; break ; case OP_PUSH_RULE : rule = * ( YR_RULE * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . i = rule -> t_flags [ tidx ] & RULE_TFLAGS_MATCH ? 1 : 0 ; push ( r1 ) ; break ; case OP_INIT_RULE : # ifdef PROFILING_ENABLED current_rule = * ( YR_RULE * * ) ( ip + 1 ) ; # endif ip += sizeof ( uint64_t ) ; break ; case OP_MATCH_RULE : pop ( r1 ) ; rule = * ( YR_RULE * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; if ( ! is_undef ( r1 ) && r1 . i ) rule -> t_flags [ tidx ] |= RULE_TFLAGS_MATCH ; else if ( RULE_IS_GLOBAL ( rule ) ) rule -> ns -> t_flags [ tidx ] |= NAMESPACE_TFLAGS_UNSATISFIED_GLOBAL ; # ifdef PROFILING_ENABLED rule -> clock_ticks += clock ( ) - start ; start = clock ( ) ; # endif break ; case OP_OBJ_LOAD : identifier = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r1 . o = ( YR_OBJECT * ) yr_hash_table_lookup ( context -> objects_table , identifier , NULL ) ; assert ( r1 . o != NULL ) ; push ( r1 ) ; break ; case OP_OBJ_FIELD : identifier = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . o = yr_object_lookup_field ( r1 . o , identifier ) ; assert ( r1 . o != NULL ) ; push ( r1 ) ; break ; case OP_OBJ_VALUE : pop ( r1 ) ; ensure_defined ( r1 ) ; switch ( r1 . o -> type ) { case OBJECT_TYPE_INTEGER : r1 . i = ( ( YR_OBJECT_INTEGER * ) r1 . o ) -> value ; break ; case OBJECT_TYPE_FLOAT : if ( isnan ( ( ( YR_OBJECT_DOUBLE * ) r1 . o ) -> value ) ) r1 . i = UNDEFINED ; else r1 . d = ( ( YR_OBJECT_DOUBLE * ) r1 . o ) -> value ; break ; case OBJECT_TYPE_STRING : if ( ( ( YR_OBJECT_STRING * ) r1 . o ) -> value == NULL ) r1 . i = UNDEFINED ; else r1 . p = ( ( YR_OBJECT_STRING * ) r1 . o ) -> value ; break ; default : assert ( FALSE ) ; } push ( r1 ) ; break ; case OP_INDEX_ARRAY : pop ( r1 ) ; pop ( r2 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; assert ( r2 . o -> type == OBJECT_TYPE_ARRAY ) ; r1 . o = yr_object_array_get_item ( r2 . o , 0 , ( int ) r1 . i ) ; if ( r1 . o == NULL ) r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_LOOKUP_DICT : pop ( r1 ) ; pop ( r2 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; assert ( r2 . o -> type == OBJECT_TYPE_DICTIONARY ) ; r1 . o = yr_object_dict_get_item ( r2 . o , 0 , r1 . ss -> c_string ) ; if ( r1 . o == NULL ) r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_CALL : args_fmt = * ( char * * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; i = ( int ) strlen ( args_fmt ) ; count = 0 ; while ( i > 0 ) { pop ( r1 ) ; if ( is_undef ( r1 ) ) count ++ ; args [ i - 1 ] = r1 ; i -- ; } pop ( r2 ) ; ensure_defined ( r2 ) ; if ( count > 0 ) { r1 . i = UNDEFINED ; push ( r1 ) ; break ; } function = ( YR_OBJECT_FUNCTION * ) r2 . o ; result = ERROR_INTERNAL_FATAL_ERROR ; for ( i = 0 ; i < MAX_OVERLOADED_FUNCTIONS ; i ++ ) { if ( function -> prototypes [ i ] . arguments_fmt == NULL ) break ; if ( strcmp ( function -> prototypes [ i ] . arguments_fmt , args_fmt ) == 0 ) { result = function -> prototypes [ i ] . code ( args , context , function ) ; break ; } } assert ( i < MAX_OVERLOADED_FUNCTIONS ) ; if ( result == ERROR_SUCCESS ) { r1 . o = function -> return_obj ; push ( r1 ) ; } else { stop = TRUE ; } break ; case OP_FOUND : pop ( r1 ) ; r1 . i = r1 . s -> matches [ tidx ] . tail != NULL ? 1 : 0 ; push ( r1 ) ; break ; case OP_FOUND_AT : pop ( r2 ) ; pop ( r1 ) ; if ( is_undef ( r1 ) ) { r1 . i = 0 ; push ( r1 ) ; break ; } match = r2 . s -> matches [ tidx ] . head ; r3 . i = FALSE ; while ( match != NULL ) { if ( r1 . i == match -> base + match -> offset ) { r3 . i = TRUE ; break ; } if ( r1 . i < match -> base + match -> offset ) break ; match = match -> next ; } push ( r3 ) ; break ; case OP_FOUND_IN : pop ( r3 ) ; pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; match = r3 . s -> matches [ tidx ] . head ; r3 . i = FALSE ; while ( match != NULL && ! r3 . i ) { if ( match -> base + match -> offset >= r1 . i && match -> base + match -> offset <= r2 . i ) { r3 . i = TRUE ; } if ( match -> base + match -> offset > r2 . i ) break ; match = match -> next ; } push ( r3 ) ; break ; case OP_COUNT : pop ( r1 ) ; r1 . i = r1 . s -> matches [ tidx ] . count ; push ( r1 ) ; break ; case OP_OFFSET : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; match = r2 . s -> matches [ tidx ] . head ; i = 1 ; r3 . i = UNDEFINED ; while ( match != NULL && r3 . i == UNDEFINED ) { if ( r1 . i == i ) r3 . i = match -> base + match -> offset ; i ++ ; match = match -> next ; } push ( r3 ) ; break ; case OP_LENGTH : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; match = r2 . s -> matches [ tidx ] . head ; i = 1 ; r3 . i = UNDEFINED ; while ( match != NULL && r3 . i == UNDEFINED ) { if ( r1 . i == i ) r3 . i = match -> match_length ; i ++ ; match = match -> next ; } push ( r3 ) ; break ; case OP_OF : found = 0 ; count = 0 ; pop ( r1 ) ; while ( ! is_undef ( r1 ) ) { if ( r1 . s -> matches [ tidx ] . tail != NULL ) found ++ ; count ++ ; pop ( r1 ) ; } pop ( r2 ) ; if ( is_undef ( r2 ) ) r1 . i = found >= count ? 1 : 0 ; else r1 . i = found >= r2 . i ? 1 : 0 ; push ( r1 ) ; break ; case OP_FILESIZE : r1 . i = context -> file_size ; push ( r1 ) ; break ; case OP_ENTRYPOINT : r1 . i = context -> entry_point ; push ( r1 ) ; break ; case OP_INT8 : pop ( r1 ) ; r1 . i = read_int8_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT16 : pop ( r1 ) ; r1 . i = read_int16_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT32 : pop ( r1 ) ; r1 . i = read_int32_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT8 : pop ( r1 ) ; r1 . i = read_uint8_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT16 : pop ( r1 ) ; r1 . i = read_uint16_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT32 : pop ( r1 ) ; r1 . i = read_uint32_t_little_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT8BE : pop ( r1 ) ; r1 . i = read_int8_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT16BE : pop ( r1 ) ; r1 . i = read_int16_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_INT32BE : pop ( r1 ) ; r1 . i = read_int32_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT8BE : pop ( r1 ) ; r1 . i = read_uint8_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT16BE : pop ( r1 ) ; r1 . i = read_uint16_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_UINT32BE : pop ( r1 ) ; r1 . i = read_uint32_t_big_endian ( context -> iterator , ( size_t ) r1 . i ) ; push ( r1 ) ; break ; case OP_CONTAINS : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; r1 . i = memmem ( r1 . ss -> c_string , r1 . ss -> length , r2 . ss -> c_string , r2 . ss -> length ) != NULL ; push ( r1 ) ; break ; case OP_IMPORT : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; result = yr_modules_load ( ( char * ) r1 . p , context ) ; if ( result != ERROR_SUCCESS ) stop = TRUE ; break ; case OP_MATCHES : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r1 . ss -> length == 0 ) { r1 . i = FALSE ; push ( r1 ) ; break ; } r1 . i = yr_re_exec ( ( uint8_t * ) r2 . re -> code , ( uint8_t * ) r1 . ss -> c_string , r1 . ss -> length , <S2SV_StartBug> r2 . re -> flags | RE_FLAGS_SCAN , <S2SV_EndBug> NULL , NULL ) >= 0 ; push ( r1 ) ; break ; case OP_INT_TO_DBL : r1 . i = * ( uint64_t * ) ( ip + 1 ) ; ip += sizeof ( uint64_t ) ; r2 = stack [ sp - r1 . i ] ; if ( is_undef ( r2 ) ) stack [ sp - r1 . i ] . i = UNDEFINED ; else stack [ sp - r1 . i ] . d = ( double ) r2 . i ; break ; case OP_STR_TO_BOOL : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . ss -> length > 0 ; push ( r1 ) ; break ; case OP_INT_EQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i == r2 . i ; push ( r1 ) ; break ; case OP_INT_NEQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i != r2 . i ; push ( r1 ) ; break ; case OP_INT_LT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i < r2 . i ; push ( r1 ) ; break ; case OP_INT_GT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i > r2 . i ; push ( r1 ) ; break ; case OP_INT_LE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i <= r2 . i ; push ( r1 ) ; break ; case OP_INT_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i >= r2 . i ; push ( r1 ) ; break ; case OP_INT_ADD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i + r2 . i ; push ( r1 ) ; break ; case OP_INT_SUB : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i - r2 . i ; push ( r1 ) ; break ; case OP_INT_MUL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . i * r2 . i ; push ( r1 ) ; break ; case OP_INT_DIV : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; if ( r2 . i != 0 ) r1 . i = r1 . i / r2 . i ; else r1 . i = UNDEFINED ; push ( r1 ) ; break ; case OP_INT_MINUS : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . i = - r1 . i ; push ( r1 ) ; break ; case OP_DBL_LT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d < r2 . d ; push ( r1 ) ; break ; case OP_DBL_GT : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d > r2 . d ; push ( r1 ) ; break ; case OP_DBL_LE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d <= r2 . d ; push ( r1 ) ; break ; case OP_DBL_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d >= r2 . d ; push ( r1 ) ; break ; case OP_DBL_EQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d == r2 . d ; push ( r1 ) ; break ; case OP_DBL_NEQ : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . i = r1 . d != r2 . d ; push ( r1 ) ; break ; case OP_DBL_ADD : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d + r2 . d ; push ( r1 ) ; break ; case OP_DBL_SUB : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d - r2 . d ; push ( r1 ) ; break ; case OP_DBL_MUL : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d * r2 . d ; push ( r1 ) ; break ; case OP_DBL_DIV : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r2 ) ; ensure_defined ( r1 ) ; r1 . d = r1 . d / r2 . d ; push ( r1 ) ; break ; case OP_DBL_MINUS : pop ( r1 ) ; ensure_defined ( r1 ) ; r1 . d = - r1 . d ; push ( r1 ) ; break ; case OP_STR_EQ : case OP_STR_NEQ : case OP_STR_LT : case OP_STR_LE : case OP_STR_GT : case OP_STR_GE : pop ( r2 ) ; pop ( r1 ) ; ensure_defined ( r1 ) ; ensure_defined ( r2 ) ; switch ( * ip ) { case OP_STR_EQ : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) == 0 ) ; break ; case OP_STR_NEQ : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) != 0 ) ; break ; case OP_STR_LT : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) < 0 ) ; break ; case OP_STR_LE : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) <= 0 ) ; break ; case OP_STR_GT : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) > 0 ) ; break ; case OP_STR_GE : r1 . i = ( sized_string_cmp ( r1 . ss , r2 . ss ) >= 0 ) ; break ; } push ( r1 ) ; break ; default : assert ( FALSE ) ; } if ( timeout > 0 ) { if ( ++ cycle == 10 ) { if ( difftime ( time ( NULL ) , start_time ) > timeout ) { # ifdef PROFILING_ENABLED assert ( current_rule != NULL ) ; current_rule -> clock_ticks += clock ( ) - start ; # endif result = ERROR_SCAN_TIMEOUT ; stop = TRUE ; } cycle = 0 ; } } ip ++ ; } yr_modules_unload_all ( context ) ; yr_free ( stack ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> length , 0 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_mbgraph_mb_stats ( VP9_COMP * cpi , MBGRAPH_MB_STATS * stats , YV12_BUFFER_CONFIG * buf , int mb_y_offset , YV12_BUFFER_CONFIG * golden_ref , <S2SV_StartBug> int_mv * prev_golden_ref_mv , <S2SV_EndBug> YV12_BUFFER_CONFIG * alt_ref , int mb_row , int mb_col ) { <S2SV_StartBug> MACROBLOCK * const x = & cpi -> mb ; <S2SV_EndBug> MACROBLOCKD * const xd = & x -> e_mbd ; int intra_error ; VP9_COMMON * cm = & cpi -> common ; x -> plane [ 0 ] . src . buf = buf -> y_buffer + mb_y_offset ; x -> plane [ 0 ] . src . stride = buf -> y_stride ; xd -> plane [ 0 ] . dst . buf = get_frame_new_buffer ( cm ) -> y_buffer + mb_y_offset ; xd -> plane [ 0 ] . dst . stride = get_frame_new_buffer ( cm ) -> y_stride ; intra_error = find_best_16x16_intra ( cpi , & stats -> ref [ INTRA_FRAME ] . m . mode ) ; if ( intra_error <= 0 ) intra_error = 1 ; stats -> ref [ INTRA_FRAME ] . err = intra_error ; if ( golden_ref ) { int g_motion_error ; xd -> plane [ 0 ] . pre [ 0 ] . buf = golden_ref -> y_buffer + mb_y_offset ; xd -> plane [ 0 ] . pre [ 0 ] . stride = golden_ref -> y_stride ; g_motion_error = do_16x16_motion_search ( cpi , prev_golden_ref_mv , & stats -> ref [ GOLDEN_FRAME ] . m . mv , mb_row , mb_col ) ; stats -> ref [ GOLDEN_FRAME ] . err = g_motion_error ; } else { stats -> ref [ GOLDEN_FRAME ] . err = INT_MAX ; stats -> ref [ GOLDEN_FRAME ] . m . mv . as_int = 0 ; } if ( alt_ref ) { int a_motion_error ; xd -> plane [ 0 ] . pre [ 0 ] . buf = alt_ref -> y_buffer + mb_y_offset ; xd -> plane [ 0 ] . pre [ 0 ] . stride = alt_ref -> y_stride ; a_motion_error = do_16x16_zerozero_search ( cpi , & stats -> ref [ ALTREF_FRAME ] . m . mv ) ; stats -> ref [ ALTREF_FRAME ] . err = a_motion_error ; } else { stats -> ref [ ALTREF_FRAME ] . err = INT_MAX ; stats -> ref [ ALTREF_FRAME ] . m . mv . as_int = 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * golden_ref , const MV <S2SV_ModEnd> * prev_golden_ref_mv , <S2SV_ModStart> & cpi -> td .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19053\n\n```\nCWE-401 static ssize_t rpmsg_eptdev_write_iter ( struct kiocb * iocb , struct iov_iter * from ) { struct file * filp = iocb -> ki_filp ; struct rpmsg_eptdev * eptdev = filp -> private_data ; size_t len = iov_iter_count ( from ) ; void * kbuf ; int ret ; kbuf = kzalloc ( len , GFP_KERNEL ) ; if ( ! kbuf ) return - ENOMEM ; if ( ! copy_from_iter_full ( kbuf , len , from ) ) <S2SV_StartBug> return - EFAULT ; <S2SV_EndBug> if ( mutex_lock_interruptible ( & eptdev -> ept_lock ) ) { ret = - ERESTARTSYS ; goto free_kbuf ; } if ( ! eptdev -> ept ) { ret = - EPIPE ; goto unlock_eptdev ; } if ( filp -> f_flags & O_NONBLOCK ) ret = rpmsg_trysend ( eptdev -> ept , kbuf , len ) ; else ret = rpmsg_send ( eptdev -> ept , kbuf , len ) ; unlock_eptdev : mutex_unlock ( & eptdev -> ept_lock ) ; free_kbuf : kfree ( kbuf ) ; return ret < 0 ? ret : len ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> from ) ) { ret = <S2SV_ModEnd> - EFAULT ; <S2SV_ModStart> - EFAULT ; goto free_kbuf ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-8789\n\n```\nCWE-125 <S2SV_StartBug> void ntlm_write_message_header ( wStream * s , NTLM_MESSAGE_HEADER * header ) <S2SV_EndBug> { Stream_Write ( s , header -> Signature , sizeof ( NTLM_SIGNATURE ) ) ; Stream_Write_UINT32 ( s , header -> MessageType ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15120\n\n```\nCWE-119 gboolean _pango_emoji_iter_next ( PangoEmojiIter * iter ) { PangoEmojiType current_emoji_type = PANGO_EMOJI_TYPE_INVALID ; if ( iter -> end == iter -> text_end ) return FALSE ; iter -> start = iter -> end ; for ( ; iter -> end < iter -> text_end ; iter -> end = g_utf8_next_char ( iter -> end ) ) { gunichar ch = g_utf8_get_char ( iter -> end ) ; if ( ( ! ( ch == kZeroWidthJoinerCharacter && ! iter -> is_emoji ) && ch != kVariationSelector15Character && ch != kVariationSelector16Character && ch != kCombiningEnclosingCircleBackslashCharacter && ! _pango_Is_Regional_Indicator ( ch ) && ! ( ( ch == kLeftSpeechBubbleCharacter || ch == kRainbowCharacter || ch == kMaleSignCharacter || ch == kFemaleSignCharacter || ch == kStaffOfAesculapiusCharacter ) && ! iter -> is_emoji ) ) || current_emoji_type == PANGO_EMOJI_TYPE_INVALID ) { current_emoji_type = _pango_get_emoji_type ( ch ) ; } if ( g_utf8_next_char ( iter -> end ) < iter -> text_end ) { gunichar peek_char = g_utf8_get_char ( g_utf8_next_char ( iter -> end ) ) ; if ( current_emoji_type == PANGO_EMOJI_TYPE_EMOJI_EMOJI && peek_char == kVariationSelector15Character ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_TEXT ; } if ( ( current_emoji_type == PANGO_EMOJI_TYPE_EMOJI_TEXT || _pango_Is_Emoji_Keycap_Base ( ch ) ) && peek_char == kVariationSelector16Character ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_EMOJI ; } if ( _pango_Is_Emoji_Keycap_Base ( ch ) && peek_char == kCombiningEnclosingKeycapCharacter ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_EMOJI ; } ; if ( _pango_Is_Regional_Indicator ( ch ) && _pango_Is_Regional_Indicator ( peek_char ) ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_EMOJI ; } if ( ( ch == kEyeCharacter || ch == kWavingWhiteFlagCharacter ) && peek_char == kZeroWidthJoinerCharacter ) { current_emoji_type = PANGO_EMOJI_TYPE_EMOJI_EMOJI ; } } if ( iter -> is_emoji == ( gboolean ) 2 ) iter -> is_emoji = ! PANGO_EMOJI_TYPE_IS_EMOJI ( current_emoji_type ) ; if ( iter -> is_emoji == PANGO_EMOJI_TYPE_IS_EMOJI ( current_emoji_type ) ) { iter -> is_emoji = ! PANGO_EMOJI_TYPE_IS_EMOJI ( current_emoji_type ) ; <S2SV_StartBug> return TRUE ; <S2SV_EndBug> } } iter -> is_emoji = PANGO_EMOJI_TYPE_IS_EMOJI ( current_emoji_type ) ; return TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_emoji_type ) ; if ( iter -> start == iter -> end ) iter -> end = g_utf8_next_char ( iter -> end ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3183\n\n```\nCWE-125 int imagetobmp ( opj_image_t * image , const char * outfile ) { int w , h ; int i , pad ; FILE * fdest = NULL ; int adjustR , adjustG , adjustB ; if ( image -> comps [ 0 ] . prec < 8 ) { fprintf ( stderr , \"Unsupported<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components:<S2SV_blank>%d\\\\n\" , image -> comps [ 0 ] . prec ) ; return 1 ; } if ( image -> numcomps >= 3 && image -> comps [ 0 ] . dx == image -> comps [ 1 ] . dx && image -> comps [ 1 ] . dx == image -> comps [ 2 ] . dx && image -> comps [ 0 ] . dy == image -> comps [ 1 ] . dy && image -> comps [ 1 ] . dy == image -> comps [ 2 ] . dy && image -> comps [ 0 ] . prec == image -> comps [ 1 ] . prec && image -> comps [ 1 ] . prec == image -> comps [ 2 ] . prec ) { fdest = fopen ( outfile , \"wb\" ) ; if ( ! fdest ) { fprintf ( stderr , \"ERROR<S2SV_blank>-><S2SV_blank>failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\\\\n\" , outfile ) ; return 1 ; } w = ( int ) image -> comps [ 0 ] . w ; h = ( int ) image -> comps [ 0 ] . h ; fprintf ( fdest , \"BM\" ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( h * w * 3 + 3 * h * ( w % 2 ) + 54 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) + 54 ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) + 54 ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) + 54 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 54 ) & 0xff , ( ( 54 ) >> 8 ) & 0xff , ( ( 54 ) >> 16 ) & 0xff , ( ( 54 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 40 ) & 0xff , ( ( 40 ) >> 8 ) & 0xff , ( ( 40 ) >> 16 ) & 0xff , ( ( 40 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( ( w ) & 0xff ) , ( OPJ_UINT8 ) ( ( w ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( w ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( w ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( ( h ) & 0xff ) , ( OPJ_UINT8 ) ( ( h ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c\" , ( 1 ) & 0xff , ( ( 1 ) >> 8 ) & 0xff ) ; fprintf ( fdest , \"%c%c\" , ( 24 ) & 0xff , ( ( 24 ) >> 8 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( 3 * h * w + 3 * h * ( w % 2 ) ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w * 3 + 3 * h * ( w % 2 ) ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 7834 ) & 0xff , ( ( 7834 ) >> 8 ) & 0xff , ( ( 7834 ) >> 16 ) & 0xff , ( ( 7834 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 7834 ) & 0xff , ( ( 7834 ) >> 8 ) & 0xff , ( ( 7834 ) >> 16 ) & 0xff , ( ( 7834 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; if ( image -> comps [ 0 ] . prec > 8 ) { adjustR = ( int ) image -> comps [ 0 ] . prec - 8 ; printf ( \"BMP<S2SV_blank>CONVERSION:<S2SV_blank>Truncating<S2SV_blank>component<S2SV_blank>0<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>bits<S2SV_blank>to<S2SV_blank>8<S2SV_blank>bits\\\\n\" , image -> comps [ 0 ] . prec ) ; } else adjustR = 0 ; if ( image -> comps [ 1 ] . prec > 8 ) { adjustG = ( int ) image -> comps [ 1 ] . prec - 8 ; printf ( \"BMP<S2SV_blank>CONVERSION:<S2SV_blank>Truncating<S2SV_blank>component<S2SV_blank>1<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>bits<S2SV_blank>to<S2SV_blank>8<S2SV_blank>bits\\\\n\" , image -> comps [ 1 ] . prec ) ; } else adjustG = 0 ; if ( image -> comps [ 2 ] . prec > 8 ) { adjustB = ( int ) image -> comps [ 2 ] . prec - 8 ; printf ( \"BMP<S2SV_blank>CONVERSION:<S2SV_blank>Truncating<S2SV_blank>component<S2SV_blank>2<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>bits<S2SV_blank>to<S2SV_blank>8<S2SV_blank>bits\\\\n\" , image -> comps [ 2 ] . prec ) ; } else adjustB = 0 ; for ( i = 0 ; i < w * h ; i ++ ) { OPJ_UINT8 rc , gc , bc ; int r , g , b ; r = image -> comps [ 0 ] . data [ w * h - ( ( i ) / ( w ) + 1 ) * w + ( i ) % ( w ) ] ; r += ( image -> comps [ 0 ] . sgnd ? 1 << ( image -> comps [ 0 ] . prec - 1 ) : 0 ) ; r = ( ( r >> adjustR ) + ( ( r >> ( adjustR - 1 ) ) % 2 ) ) ; if ( r > 255 ) r = 255 ; else if ( r < 0 ) r = 0 ; rc = ( OPJ_UINT8 ) r ; g = image -> comps [ 1 ] . data [ w * h - ( ( i ) / ( w ) + 1 ) * w + ( i ) % ( w ) ] ; g += ( image -> comps [ 1 ] . sgnd ? 1 << ( image -> comps [ 1 ] . prec - 1 ) : 0 ) ; g = ( ( g >> adjustG ) + ( ( g >> ( adjustG - 1 ) ) % 2 ) ) ; if ( g > 255 ) g = 255 ; else if ( g < 0 ) g = 0 ; gc = ( OPJ_UINT8 ) g ; b = image -> comps [ 2 ] . data [ w * h - ( ( i ) / ( w ) + 1 ) * w + ( i ) % ( w ) ] ; b += ( image -> comps [ 2 ] . sgnd ? 1 << ( image -> comps [ 2 ] . prec - 1 ) : 0 ) ; b = ( ( b >> adjustB ) + ( ( b >> ( adjustB - 1 ) ) % 2 ) ) ; if ( b > 255 ) b = 255 ; else if ( b < 0 ) b = 0 ; bc = ( OPJ_UINT8 ) b ; fprintf ( fdest , \"%c%c%c\" , bc , gc , rc ) ; if ( ( i + 1 ) % w == 0 ) { for ( pad = ( ( 3 * w ) % 4 ) ? ( 4 - ( 3 * w ) % 4 ) : 0 ; pad > 0 ; pad -- ) fprintf ( fdest , \"%c\" , 0 ) ; } } fclose ( fdest ) ; } else { fdest = fopen ( outfile , \"wb\" ) ; if ( ! fdest ) { fprintf ( stderr , \"ERROR<S2SV_blank>-><S2SV_blank>failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\\\\n\" , outfile ) ; return 1 ; } w = ( int ) image -> comps [ 0 ] . w ; h = ( int ) image -> comps [ 0 ] . h ; fprintf ( fdest , \"BM\" ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( h * w + 54 + 1024 + h * ( w % 2 ) ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + 54 + 1024 + h * ( w % 2 ) ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + 54 + 1024 + h * ( w % 2 ) ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + 54 + 1024 + w * ( w % 2 ) ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 54 + 1024 ) & 0xff , ( ( 54 + 1024 ) >> 8 ) & 0xff , ( ( 54 + 1024 ) >> 16 ) & 0xff , ( ( 54 + 1024 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 40 ) & 0xff , ( ( 40 ) >> 8 ) & 0xff , ( ( 40 ) >> 16 ) & 0xff , ( ( 40 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( ( w ) & 0xff ) , ( OPJ_UINT8 ) ( ( w ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( w ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( w ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( ( h ) & 0xff ) , ( OPJ_UINT8 ) ( ( h ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c\" , ( 1 ) & 0xff , ( ( 1 ) >> 8 ) & 0xff ) ; fprintf ( fdest , \"%c%c\" , ( 8 ) & 0xff , ( ( 8 ) >> 8 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 0 ) & 0xff , ( ( 0 ) >> 8 ) & 0xff , ( ( 0 ) >> 16 ) & 0xff , ( ( 0 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( OPJ_UINT8 ) ( h * w + h * ( w % 2 ) ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + h * ( w % 2 ) ) >> 8 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + h * ( w % 2 ) ) >> 16 ) & 0xff , ( OPJ_UINT8 ) ( ( h * w + h * ( w % 2 ) ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 7834 ) & 0xff , ( ( 7834 ) >> 8 ) & 0xff , ( ( 7834 ) >> 16 ) & 0xff , ( ( 7834 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 7834 ) & 0xff , ( ( 7834 ) >> 8 ) & 0xff , ( ( 7834 ) >> 16 ) & 0xff , ( ( 7834 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 256 ) & 0xff , ( ( 256 ) >> 8 ) & 0xff , ( ( 256 ) >> 16 ) & 0xff , ( ( 256 ) >> 24 ) & 0xff ) ; fprintf ( fdest , \"%c%c%c%c\" , ( 256 ) & 0xff , ( ( 256 ) >> 8 ) & 0xff , ( ( 256 ) >> 16 ) & 0xff , ( ( 256 ) >> 24 ) & 0xff ) ; if ( image -> comps [ 0 ] . prec > 8 ) { adjustR = ( int ) image -> comps [ 0 ] . prec - 8 ; printf ( \"BMP<S2SV_blank>CONVERSION:<S2SV_blank>Truncating<S2SV_blank>component<S2SV_blank>0<S2SV_blank>from<S2SV_blank>%d<S2SV_blank>bits<S2SV_blank>to<S2SV_blank>8<S2SV_blank>bits\\\\n\" , image -> comps [ 0 ] . prec ) ; } else adjustR = 0 ; for ( i = 0 ; i < 256 ; i ++ ) { fprintf ( fdest , \"%c%c%c%c\" , i , i , i , 0 ) ; } for ( i = 0 ; i < w * h ; i ++ ) { int r ; r = image -> comps [ 0 ] . data [ w * h - ( ( i ) / ( w ) + 1 ) * w + ( i ) % ( w ) ] ; r += ( image -> comps [ 0 ] . sgnd ? 1 << ( image -> comps [ 0 ] . prec - 1 ) : 0 ) ; r = ( ( r >> adjustR ) + ( ( r >> ( adjustR - 1 ) ) % 2 ) ) ; if ( r > 255 ) r = 255 ; else if ( r < 0 ) r = 0 ; fprintf ( fdest , \"%c\" , ( OPJ_UINT8 ) r ) ; if ( ( i + 1 ) % w == 0 ) { <S2SV_StartBug> for ( ( pad = w % 4 ) ? ( 4 - w % 4 ) : 0 ; pad > 0 ; pad -- ) <S2SV_EndBug> fprintf ( fdest , \"%c\" , 0 ) ; } } fclose ( fdest ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { for ( pad = ( <S2SV_ModEnd> w % 4\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4303\n\n```\nCWE-119 cJSON * cJSON_DetachItemFromArray ( cJSON * array , int which ) { cJSON * c = array -> child ; <S2SV_StartBug> while ( c && which > 0 ) { <S2SV_EndBug> <S2SV_StartBug> c = c -> next ; <S2SV_EndBug> -- which ; } if ( ! c ) return 0 ; if ( c -> prev ) c -> prev -> next = c -> next ; if ( c -> next ) c -> next -> prev = c -> prev ; if ( c == array -> child ) array -> child = c -> next ; c -> prev = c -> next = 0 ; return c ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> > 0 ) <S2SV_ModEnd> c = c <S2SV_ModStart> c -> next , which -- ; <S2SV_ModEnd> if ( !\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-12589\n\n```\nCWE-284 int sandbox ( void * sandbox_arg ) { ( void ) sandbox_arg ; pid_t child_pid = getpid ( ) ; if ( arg_debug ) printf ( \"Initializing<S2SV_blank>child<S2SV_blank>process\\\\n\" ) ; close ( parent_to_child_fds [ 1 ] ) ; close ( child_to_parent_fds [ 0 ] ) ; wait_for_other ( parent_to_child_fds [ 0 ] ) ; if ( arg_debug && child_pid == 1 ) printf ( \"PID<S2SV_blank>namespace<S2SV_blank>installed\\\\n\" ) ; if ( cfg . hostname ) { if ( sethostname ( cfg . hostname , strlen ( cfg . hostname ) ) < 0 ) errExit ( \"sethostname\" ) ; } if ( mount ( NULL , \"/\" , NULL , MS_SLAVE | MS_REC , NULL ) < 0 ) { chk_chroot ( ) ; } preproc_mount_mnt_dir ( ) ; if ( mount ( LIBDIR \"/firejail\" , RUN_FIREJAIL_LIB_DIR , \"none\" , MS_BIND , NULL ) < 0 ) errExit ( \"mounting<S2SV_blank>\" RUN_FIREJAIL_LIB_DIR ) ; if ( cfg . name ) fs_logger2 ( \"sandbox<S2SV_blank>name:\" , cfg . name ) ; fs_logger2int ( \"sandbox<S2SV_blank>pid:\" , ( int ) sandbox_pid ) ; if ( cfg . chrootdir ) fs_logger ( \"sandbox<S2SV_blank>filesystem:<S2SV_blank>chroot\" ) ; else if ( arg_overlay ) fs_logger ( \"sandbox<S2SV_blank>filesystem:<S2SV_blank>overlay\" ) ; else fs_logger ( \"sandbox<S2SV_blank>filesystem:<S2SV_blank>local\" ) ; fs_logger ( \"install<S2SV_blank>mount<S2SV_blank>namespace\" ) ; if ( arg_netfilter && any_bridge_configured ( ) ) { netfilter ( arg_netfilter_file ) ; } if ( arg_netfilter6 && any_bridge_configured ( ) ) { netfilter6 ( arg_netfilter6_file ) ; } int gw_cfg_failed = 0 ; if ( arg_nonetwork ) { net_if_up ( \"lo\" ) ; if ( arg_debug ) printf ( \"Network<S2SV_blank>namespace<S2SV_blank>enabled,<S2SV_blank>only<S2SV_blank>loopback<S2SV_blank>interface<S2SV_blank>available\\\\n\" ) ; } else if ( arg_netns ) { netns ( arg_netns ) ; if ( arg_debug ) printf ( \"Network<S2SV_blank>namespace<S2SV_blank>\\'%s\\'<S2SV_blank>activated\\\\n\" , arg_netns ) ; } else if ( any_bridge_configured ( ) || any_interface_configured ( ) ) { net_if_up ( \"lo\" ) ; if ( mac_not_zero ( cfg . bridge0 . macsandbox ) ) net_config_mac ( cfg . bridge0 . devsandbox , cfg . bridge0 . macsandbox ) ; sandbox_if_up ( & cfg . bridge0 ) ; if ( mac_not_zero ( cfg . bridge1 . macsandbox ) ) net_config_mac ( cfg . bridge1 . devsandbox , cfg . bridge1 . macsandbox ) ; sandbox_if_up ( & cfg . bridge1 ) ; if ( mac_not_zero ( cfg . bridge2 . macsandbox ) ) net_config_mac ( cfg . bridge2 . devsandbox , cfg . bridge2 . macsandbox ) ; sandbox_if_up ( & cfg . bridge2 ) ; if ( mac_not_zero ( cfg . bridge3 . macsandbox ) ) net_config_mac ( cfg . bridge3 . devsandbox , cfg . bridge3 . macsandbox ) ; sandbox_if_up ( & cfg . bridge3 ) ; if ( cfg . interface0 . configured && cfg . interface0 . ip ) { if ( arg_debug ) printf ( \"Configuring<S2SV_blank>%d.%d.%d.%d<S2SV_blank>address<S2SV_blank>on<S2SV_blank>interface<S2SV_blank>%s\\\\n\" , PRINT_IP ( cfg . interface0 . ip ) , cfg . interface0 . dev ) ; net_config_interface ( cfg . interface0 . dev , cfg . interface0 . ip , cfg . interface0 . mask , cfg . interface0 . mtu ) ; } if ( cfg . interface1 . configured && cfg . interface1 . ip ) { if ( arg_debug ) printf ( \"Configuring<S2SV_blank>%d.%d.%d.%d<S2SV_blank>address<S2SV_blank>on<S2SV_blank>interface<S2SV_blank>%s\\\\n\" , PRINT_IP ( cfg . interface1 . ip ) , cfg . interface1 . dev ) ; net_config_interface ( cfg . interface1 . dev , cfg . interface1 . ip , cfg . interface1 . mask , cfg . interface1 . mtu ) ; } if ( cfg . interface2 . configured && cfg . interface2 . ip ) { if ( arg_debug ) printf ( \"Configuring<S2SV_blank>%d.%d.%d.%d<S2SV_blank>address<S2SV_blank>on<S2SV_blank>interface<S2SV_blank>%s\\\\n\" , PRINT_IP ( cfg . interface2 . ip ) , cfg . interface2 . dev ) ; net_config_interface ( cfg . interface2 . dev , cfg . interface2 . ip , cfg . interface2 . mask , cfg . interface2 . mtu ) ; } if ( cfg . interface3 . configured && cfg . interface3 . ip ) { if ( arg_debug ) printf ( \"Configuring<S2SV_blank>%d.%d.%d.%d<S2SV_blank>address<S2SV_blank>on<S2SV_blank>interface<S2SV_blank>%s\\\\n\" , PRINT_IP ( cfg . interface3 . ip ) , cfg . interface3 . dev ) ; net_config_interface ( cfg . interface3 . dev , cfg . interface3 . ip , cfg . interface3 . mask , cfg . interface3 . mtu ) ; } if ( cfg . defaultgw ) { if ( net_add_route ( 0 , 0 , cfg . defaultgw ) ) { fwarning ( \"cannot<S2SV_blank>configure<S2SV_blank>default<S2SV_blank>route\\\\n\" ) ; gw_cfg_failed = 1 ; } } if ( arg_debug ) printf ( \"Network<S2SV_blank>namespace<S2SV_blank>enabled\\\\n\" ) ; } if ( ! arg_quiet ) { if ( any_bridge_configured ( ) || any_interface_configured ( ) || cfg . defaultgw || cfg . dns1 ) { fmessage ( \"\\\\n\" ) ; if ( any_bridge_configured ( ) || any_interface_configured ( ) ) { if ( arg_scan ) sbox_run ( SBOX_ROOT | SBOX_CAPS_NETWORK | SBOX_SECCOMP , 3 , PATH_FNET , \"printif\" , \"scan\" ) ; else sbox_run ( SBOX_ROOT | SBOX_CAPS_NETWORK | SBOX_SECCOMP , 2 , PATH_FNET , \"printif\" ) ; } if ( cfg . defaultgw != 0 ) { if ( gw_cfg_failed ) fmessage ( \"Default<S2SV_blank>gateway<S2SV_blank>configuration<S2SV_blank>failed\\\\n\" ) ; else fmessage ( \"Default<S2SV_blank>gateway<S2SV_blank>%d.%d.%d.%d\\\\n\" , PRINT_IP ( cfg . defaultgw ) ) ; } if ( cfg . dns1 != NULL ) fmessage ( \"DNS<S2SV_blank>server<S2SV_blank>%s\\\\n\" , cfg . dns1 ) ; if ( cfg . dns2 != NULL ) fmessage ( \"DNS<S2SV_blank>server<S2SV_blank>%s\\\\n\" , cfg . dns2 ) ; if ( cfg . dns3 != NULL ) fmessage ( \"DNS<S2SV_blank>server<S2SV_blank>%s\\\\n\" , cfg . dns3 ) ; if ( cfg . dns4 != NULL ) fmessage ( \"DNS<S2SV_blank>server<S2SV_blank>%s\\\\n\" , cfg . dns4 ) ; fmessage ( \"\\\\n\" ) ; } } if ( arg_nonetwork || any_bridge_configured ( ) || any_interface_configured ( ) ) { } else { EUID_USER ( ) ; env_ibus_load ( ) ; EUID_ROOT ( ) ; } # ifdef HAVE_SECCOMP if ( cfg . protocol ) { if ( arg_debug ) printf ( \"Build<S2SV_blank>protocol<S2SV_blank>filter:<S2SV_blank>%s\\\\n\" , cfg . protocol ) ; int rv = sbox_run ( SBOX_USER | SBOX_CAPS_NONE | SBOX_SECCOMP , 5 , PATH_FSECCOMP , \"protocol\" , \"build\" , cfg . protocol , RUN_SECCOMP_PROTOCOL ) ; if ( rv ) exit ( rv ) ; } if ( arg_seccomp && ( cfg . seccomp_list || cfg . seccomp_list_drop || cfg . seccomp_list_keep ) ) arg_seccomp_postexec = 1 ; # endif bool need_preload = arg_trace || arg_tracelog || arg_seccomp_postexec ; if ( getuid ( ) != 0 && ( arg_appimage || cfg . chrootdir || arg_overlay ) ) { enforce_filters ( ) ; need_preload = arg_trace || arg_tracelog ; } if ( need_preload ) fs_trace_preload ( ) ; if ( cfg . hosts_file ) fs_store_hosts_file ( ) ; # ifdef HAVE_CHROOT if ( cfg . chrootdir ) { fs_chroot ( cfg . chrootdir ) ; if ( need_preload ) fs_trace_preload ( ) ; } else # endif # ifdef HAVE_OVERLAYFS if ( arg_overlay ) fs_overlayfs ( ) ; else # endif fs_basic_fs ( ) ; if ( arg_private ) { if ( cfg . home_private ) { if ( cfg . chrootdir ) fwarning ( \"private=directory<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private=directory<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else fs_private_homedir ( ) ; } else if ( cfg . home_private_keep ) { if ( cfg . chrootdir ) fwarning ( \"private-home=<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-home=<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else fs_private_home_list ( ) ; } else fs_private ( ) ; } if ( arg_private_dev ) fs_private_dev ( ) ; if ( arg_private_etc ) { if ( cfg . chrootdir ) fwarning ( \"private-etc<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-etc<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { fs_private_dir_list ( \"/etc\" , RUN_ETC_DIR , cfg . etc_private_keep ) ; if ( need_preload ) fs_trace_preload ( ) ; } } if ( arg_private_opt ) { if ( cfg . chrootdir ) fwarning ( \"private-opt<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-opt<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { fs_private_dir_list ( \"/opt\" , RUN_OPT_DIR , cfg . opt_private_keep ) ; } } if ( arg_private_srv ) { if ( cfg . chrootdir ) fwarning ( \"private-srv<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-srv<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { fs_private_dir_list ( \"/srv\" , RUN_SRV_DIR , cfg . srv_private_keep ) ; } } if ( arg_private_bin && ! arg_appimage ) { if ( cfg . chrootdir ) fwarning ( \"private-bin<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-bin<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { if ( arg_x11_xorg ) { EUID_USER ( ) ; char * tmp ; if ( asprintf ( & tmp , \"%s,xauth\" , cfg . bin_private_keep ) == - 1 ) errExit ( \"asprintf\" ) ; cfg . bin_private_keep = tmp ; EUID_ROOT ( ) ; } fs_private_bin_list ( ) ; } } if ( arg_private_lib && ! arg_appimage ) { if ( cfg . chrootdir ) fwarning ( \"private-lib<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-lib<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else { fs_private_lib ( ) ; } } if ( arg_private_cache ) { if ( cfg . chrootdir ) fwarning ( \"private-cache<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>chroot\\\\n\" ) ; else if ( arg_overlay ) fwarning ( \"private-cache<S2SV_blank>feature<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>overlay\\\\n\" ) ; else fs_private_cache ( ) ; } if ( arg_private_tmp ) { EUID_USER ( ) ; fs_private_tmp ( ) ; EUID_ROOT ( ) ; } if ( arg_nodbus ) dbus_session_disable ( ) ; if ( cfg . hostname ) fs_hostname ( cfg . hostname ) ; if ( cfg . hosts_file ) fs_mount_hosts_file ( ) ; if ( arg_netns ) netns_mounts ( arg_netns ) ; fs_proc_sys_dev_boot ( ) ; if ( checkcfg ( CFG_DISABLE_MNT ) ) fs_mnt ( 1 ) ; else if ( arg_disable_mnt ) fs_mnt ( 0 ) ; fs_whitelist ( ) ; fs_blacklist ( ) ; if ( arg_nosound ) { pulseaudio_disable ( ) ; fs_dev_disable_sound ( ) ; } else if ( ! arg_noautopulse ) pulseaudio_init ( ) ; if ( arg_no3d ) fs_dev_disable_3d ( ) ; if ( arg_notv ) fs_dev_disable_tv ( ) ; if ( arg_nodvd ) fs_dev_disable_dvd ( ) ; if ( arg_nou2f ) fs_dev_disable_u2f ( ) ; if ( arg_novideo ) fs_dev_disable_video ( ) ; if ( need_preload ) fs_trace ( ) ; fs_resolvconf ( ) ; fs_logger_print ( ) ; fs_logger_change_owner ( ) ; EUID_USER ( ) ; int cwd = 0 ; if ( cfg . cwd ) { if ( chdir ( cfg . cwd ) == 0 ) cwd = 1 ; } if ( ! cwd ) { if ( chdir ( \"/\" ) < 0 ) errExit ( \"chdir\" ) ; if ( cfg . homedir ) { struct stat s ; if ( stat ( cfg . homedir , & s ) == 0 ) { if ( chdir ( cfg . homedir ) < 0 ) errExit ( \"chdir\" ) ; } } } if ( arg_debug ) { char * cpath = get_current_dir_name ( ) ; if ( cpath ) { printf ( \"Current<S2SV_blank>directory:<S2SV_blank>%s\\\\n\" , cpath ) ; free ( cpath ) ; } } EUID_ROOT ( ) ; fs_x11 ( ) ; if ( arg_x11_xorg ) x11_xorg ( ) ; save_umask ( ) ; save_nonewprivs ( ) ; <S2SV_StartBug> set_caps ( ) ; <S2SV_EndBug> save_cpu ( ) ; save_cgroup ( ) ; # ifdef HAVE_SECCOMP # ifdef SYS_socket if ( cfg . protocol ) { if ( arg_debug ) printf ( \"Install<S2SV_blank>protocol<S2SV_blank>filter:<S2SV_blank>%s\\\\n\" , cfg . protocol ) ; seccomp_load ( RUN_SECCOMP_PROTOCOL ) ; protocol_filter_save ( ) ; } else { int rv = unlink ( RUN_SECCOMP_PROTOCOL ) ; ( void ) rv ; } # endif if ( arg_seccomp == 1 ) { if ( cfg . seccomp_list_keep ) seccomp_filter_keep ( ) ; else seccomp_filter_drop ( ) ; } else { int rv = unlink ( RUN_SECCOMP_CFG ) ; rv |= unlink ( RUN_SECCOMP_32 ) ; ( void ) rv ; } if ( arg_memory_deny_write_execute ) { if ( arg_debug ) printf ( \"Install<S2SV_blank>memory<S2SV_blank>write&execute<S2SV_blank>filter\\\\n\" ) ; seccomp_load ( RUN_SECCOMP_MDWX ) ; } else { int rv = unlink ( RUN_SECCOMP_MDWX ) ; ( void ) rv ; } <S2SV_StartBug> # endif <S2SV_EndBug> FILE * rj = create_ready_for_join_file ( ) ; save_nogroups ( ) ; if ( arg_noroot ) { int rv = unshare ( CLONE_NEWUSER ) ; if ( rv == - 1 ) { fwarning ( \"cannot<S2SV_blank>create<S2SV_blank>a<S2SV_blank>new<S2SV_blank>user<S2SV_blank>namespace,<S2SV_blank>going<S2SV_blank>forward<S2SV_blank>without<S2SV_blank>it...\\\\n\" ) ; arg_noroot = 0 ; } } notify_other ( child_to_parent_fds [ 1 ] ) ; close ( child_to_parent_fds [ 1 ] ) ; wait_for_other ( parent_to_child_fds [ 0 ] ) ; close ( parent_to_child_fds [ 0 ] ) ; if ( arg_noroot ) { if ( arg_debug ) printf ( \"noroot<S2SV_blank>user<S2SV_blank>namespace<S2SV_blank>installed\\\\n\" ) ; set_caps ( ) ; } if ( arg_nonewprivs ) { prctl ( PR_SET_NO_NEW_PRIVS , 1 , 0 , 0 , 0 ) ; if ( prctl ( PR_GET_NO_NEW_PRIVS , 0 , 0 , 0 , 0 ) != 1 ) { fwarning ( \"cannot<S2SV_blank>set<S2SV_blank>NO_NEW_PRIVS,<S2SV_blank>it<S2SV_blank>requires<S2SV_blank>a<S2SV_blank>Linux<S2SV_blank>kernel<S2SV_blank>version<S2SV_blank>3.5<S2SV_blank>or<S2SV_blank>newer.\\\\n\" ) ; if ( force_nonewprivs ) { fprintf ( stderr , \"Error:<S2SV_blank>NO_NEW_PRIVS<S2SV_blank>required<S2SV_blank>for<S2SV_blank>this<S2SV_blank>sandbox,<S2SV_blank>exiting<S2SV_blank>...\\\\n\" ) ; exit ( 1 ) ; } } else if ( arg_debug ) printf ( \"NO_NEW_PRIVS<S2SV_blank>set\\\\n\" ) ; } drop_privs ( arg_nogroups ) ; prctl ( PR_SET_PDEATHSIG , SIGKILL , 0 , 0 , 0 ) ; if ( cfg . cpus ) set_cpu_affinity ( ) ; pid_t app_pid = fork ( ) ; if ( app_pid == - 1 ) errExit ( \"fork\" ) ; if ( app_pid == 0 ) { # ifdef HAVE_APPARMOR if ( checkcfg ( CFG_APPARMOR ) && arg_apparmor ) { errno = 0 ; if ( aa_change_onexec ( \"firejail-default\" ) ) { fwarning ( \"Cannot<S2SV_blank>confine<S2SV_blank>the<S2SV_blank>application<S2SV_blank>using<S2SV_blank>AppArmor.\\\\n\" \"Maybe<S2SV_blank>firejail-default<S2SV_blank>AppArmor<S2SV_blank>profile<S2SV_blank>is<S2SV_blank>not<S2SV_blank>loaded<S2SV_blank>into<S2SV_blank>the<S2SV_blank>kernel.\\\\n\" \"As<S2SV_blank>root,<S2SV_blank>run<S2SV_blank>\\\\\"aa-enforce<S2SV_blank>firejail-default\\\\\"<S2SV_blank>to<S2SV_blank>load<S2SV_blank>it.\\\\n\" ) ; } else if ( arg_debug ) printf ( \"AppArmor<S2SV_blank>enabled\\\\n\" ) ; } # endif if ( arg_nice ) set_nice ( cfg . nice ) ; set_rlimits ( ) ; start_application ( 0 , rj ) ; } fclose ( rj ) ; int status = monitor_application ( app_pid ) ; flush_stdin ( ) ; if ( WIFEXITED ( status ) ) { return WEXITSTATUS ( status ) ; } else { return - 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( ) ; <S2SV_ModEnd> save_cpu ( ) <S2SV_ModStart> rv ; } fs_rdonly ( RUN_SECCOMP_DIR ) ; # endif set_caps ( ) ; <S2SV_ModEnd> FILE * rj\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8126\n\n```\nCWE-119 void PNGAPI png_info_init_3 ( png_infopp ptr_ptr , png_size_t png_info_struct_size ) { png_infop info_ptr = * ptr_ptr ; png_debug ( 1 , \"in<S2SV_blank>png_info_init_3\" ) ; if ( info_ptr == NULL ) return ; if ( png_sizeof ( png_info ) > png_info_struct_size ) { png_destroy_struct ( info_ptr ) ; info_ptr = ( png_infop ) png_create_struct ( PNG_STRUCT_INFO ) ; * ptr_ptr = info_ptr ; <S2SV_StartBug> } <S2SV_EndBug> png_memset ( info_ptr , 0 , png_sizeof ( png_info ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = info_ptr ; if ( info_ptr == NULL ) return ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14039\n\n```\nCWE-787 static OPJ_BOOL opj_j2k_write_sod ( opj_j2k_t * p_j2k , opj_tcd_t * p_tile_coder , OPJ_BYTE * p_data , OPJ_UINT32 * p_data_written , OPJ_UINT32 p_total_data_size , const opj_stream_private_t * p_stream , opj_event_mgr_t * p_manager ) { opj_codestream_info_t * l_cstr_info = 00 ; OPJ_UINT32 l_remaining_data ; assert ( p_j2k != 00 ) ; assert ( p_manager != 00 ) ; assert ( p_stream != 00 ) ; OPJ_UNUSED ( p_stream ) ; <S2SV_StartBug> opj_write_bytes ( p_data , J2K_MS_SOD , <S2SV_EndBug> 2 ) ; p_data += 2 ; l_remaining_data = p_total_data_size - 4 ; p_tile_coder -> tp_num = p_j2k -> m_specific_param . m_encoder . m_current_poc_tile_part_number ; p_tile_coder -> cur_tp_num = p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number ; # ifdef USE_JPWL assert ( 0 && \"TODO\" ) ; # endif if ( p_j2k -> m_specific_param . m_encoder . m_current_tile_part_number == 0 ) { p_tile_coder -> tcd_image -> tiles -> packno = 0 ; if ( l_cstr_info ) { l_cstr_info -> packno = 0 ; } } * p_data_written = 0 ; if ( ! opj_tcd_encode_tile ( p_tile_coder , p_j2k -> m_current_tile_number , p_data , p_data_written , l_remaining_data , l_cstr_info , p_manager ) ) { opj_event_msg ( p_manager , EVT_ERROR , \"Cannot<S2SV_blank>encode<S2SV_blank>tile\\\\n\" ) ; return OPJ_FALSE ; } * p_data_written += 2 ; return OPJ_TRUE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p_stream ) ; if ( p_total_data_size < 4 ) { opj_event_msg ( p_manager , EVT_ERROR , \"Not<S2SV_blank>enough<S2SV_blank>bytes<S2SV_blank>in<S2SV_blank>output<S2SV_blank>buffer<S2SV_blank>to<S2SV_blank>write<S2SV_blank>SOD<S2SV_blank>marker\\\\n\" ) ; return OPJ_FALSE ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16527\n\n```\nCWE-416 static void snd_usb_mixer_free ( struct usb_mixer_interface * mixer ) <S2SV_StartBug> { <S2SV_EndBug> kfree ( mixer -> id_elems ) ; if ( mixer -> urb ) { kfree ( mixer -> urb -> transfer_buffer ) ; usb_free_urb ( mixer -> urb ) ; } usb_free_urb ( mixer -> rc_urb ) ; kfree ( mixer -> rc_setup_packet ) ; kfree ( mixer ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mixer ) { snd_usb_mixer_disconnect ( mixer ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-12654\n\n```\nCWE-787 int mwifiex_ret_wmm_get_status ( struct mwifiex_private * priv , const struct host_cmd_ds_command * resp ) { u8 * curr = ( u8 * ) & resp -> params . get_wmm_status ; uint16_t resp_len = le16_to_cpu ( resp -> size ) , tlv_len ; int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK ; bool valid = true ; struct mwifiex_ie_types_data * tlv_hdr ; struct mwifiex_ie_types_wmm_queue_status * tlv_wmm_qstatus ; struct ieee_types_wmm_parameter * wmm_param_ie = NULL ; struct mwifiex_wmm_ac_status * ac_status ; mwifiex_dbg ( priv -> adapter , INFO , \"info:<S2SV_blank>WMM:<S2SV_blank>WMM_GET_STATUS<S2SV_blank>cmdresp<S2SV_blank>received:<S2SV_blank>%d\\\\n\" , resp_len ) ; while ( ( resp_len >= sizeof ( tlv_hdr -> header ) ) && valid ) { tlv_hdr = ( struct mwifiex_ie_types_data * ) curr ; tlv_len = le16_to_cpu ( tlv_hdr -> header . len ) ; if ( resp_len < tlv_len + sizeof ( tlv_hdr -> header ) ) break ; switch ( le16_to_cpu ( tlv_hdr -> header . type ) ) { case TLV_TYPE_WMMQSTATUS : tlv_wmm_qstatus = ( struct mwifiex_ie_types_wmm_queue_status * ) tlv_hdr ; mwifiex_dbg ( priv -> adapter , CMD , \"info:<S2SV_blank>CMD_RESP:<S2SV_blank>WMM_GET_STATUS:\\\\t\" \"QSTATUS<S2SV_blank>TLV:<S2SV_blank>%d,<S2SV_blank>%d,<S2SV_blank>%d\\\\n\" , tlv_wmm_qstatus -> queue_index , tlv_wmm_qstatus -> flow_required , tlv_wmm_qstatus -> disabled ) ; ac_status = & priv -> wmm . ac_status [ tlv_wmm_qstatus -> queue_index ] ; ac_status -> disabled = tlv_wmm_qstatus -> disabled ; ac_status -> flow_required = tlv_wmm_qstatus -> flow_required ; ac_status -> flow_created = tlv_wmm_qstatus -> flow_created ; break ; case WLAN_EID_VENDOR_SPECIFIC : wmm_param_ie = ( struct ieee_types_wmm_parameter * ) ( curr + 2 ) ; wmm_param_ie -> vend_hdr . len = ( u8 ) tlv_len ; wmm_param_ie -> vend_hdr . element_id = WLAN_EID_VENDOR_SPECIFIC ; mwifiex_dbg ( priv -> adapter , CMD , \"info:<S2SV_blank>CMD_RESP:<S2SV_blank>WMM_GET_STATUS:\\\\t\" \"WMM<S2SV_blank>Parameter<S2SV_blank>Set<S2SV_blank>Count:<S2SV_blank>%d\\\\n\" , wmm_param_ie -> qos_info_bitmap & mask ) ; <S2SV_StartBug> memcpy ( ( u8 * ) & priv -> curr_bss_params . bss_descriptor . <S2SV_EndBug> wmm_ie , wmm_param_ie , wmm_param_ie -> vend_hdr . len + 2 ) ; break ; default : valid = false ; break ; } curr += ( tlv_len + sizeof ( tlv_hdr -> header ) ) ; resp_len -= ( tlv_len + sizeof ( tlv_hdr -> header ) ) ; } mwifiex_wmm_setup_queue_priorities ( priv , wmm_param_ie ) ; mwifiex_wmm_setup_ac_downgrade ( priv ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mask ) ; if ( wmm_param_ie -> vend_hdr . len + 2 > sizeof ( struct ieee_types_wmm_parameter ) ) break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 static void toggle_os_keylockstates ( int fd , int changedlockstates ) { BTIF_TRACE_EVENT ( \"%s:<S2SV_blank>fd<S2SV_blank>=<S2SV_blank>%d,<S2SV_blank>changedlockstates<S2SV_blank>=<S2SV_blank>0x%x\" , __FUNCTION__ , fd , changedlockstates ) ; UINT8 hidreport [ 9 ] ; int reportIndex ; memset ( hidreport , 0 , 9 ) ; hidreport [ 0 ] = 1 ; reportIndex = 4 ; if ( changedlockstates & BTIF_HH_KEYSTATE_MASK_CAPSLOCK ) { BTIF_TRACE_DEBUG ( \"%s<S2SV_blank>Setting<S2SV_blank>CAPSLOCK\" , __FUNCTION__ ) ; hidreport [ reportIndex ++ ] = ( UINT8 ) HID_REPORT_CAPSLOCK ; } if ( changedlockstates & BTIF_HH_KEYSTATE_MASK_NUMLOCK ) { BTIF_TRACE_DEBUG ( \"%s<S2SV_blank>Setting<S2SV_blank>NUMLOCK\" , __FUNCTION__ ) ; hidreport [ reportIndex ++ ] = ( UINT8 ) HID_REPORT_NUMLOCK ; } if ( changedlockstates & BTIF_HH_KEYSTATE_MASK_SCROLLLOCK ) { BTIF_TRACE_DEBUG ( \"%s<S2SV_blank>Setting<S2SV_blank>SCROLLLOCK\" , __FUNCTION__ ) ; hidreport [ reportIndex ++ ] = ( UINT8 ) HID_REPORT_SCROLLLOCK ; } BTIF_TRACE_DEBUG ( \"Writing<S2SV_blank>hidreport<S2SV_blank>#1<S2SV_blank>to<S2SV_blank>os:<S2SV_blank>\" \"%s:<S2SV_blank><S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>%x\" , __FUNCTION__ , hidreport [ 0 ] , hidreport [ 1 ] , hidreport [ 2 ] ) ; BTIF_TRACE_DEBUG ( \"%s:<S2SV_blank><S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>%x\" , __FUNCTION__ , hidreport [ 3 ] , hidreport [ 4 ] , hidreport [ 5 ] ) ; BTIF_TRACE_DEBUG ( \"%s:<S2SV_blank><S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>%x\" , __FUNCTION__ , hidreport [ 6 ] , hidreport [ 7 ] , hidreport [ 8 ] ) ; bta_hh_co_write ( fd , hidreport , sizeof ( hidreport ) ) ; <S2SV_StartBug> usleep ( 200000 ) ; <S2SV_EndBug> memset ( hidreport , 0 , 9 ) ; hidreport [ 0 ] = 1 ; BTIF_TRACE_DEBUG ( \"Writing<S2SV_blank>hidreport<S2SV_blank>#2<S2SV_blank>to<S2SV_blank>os:<S2SV_blank>\" \"%s:<S2SV_blank><S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>%x\" , __FUNCTION__ , hidreport [ 0 ] , hidreport [ 1 ] , hidreport [ 2 ] ) ; BTIF_TRACE_DEBUG ( \"%s:<S2SV_blank><S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>%x\" , __FUNCTION__ , hidreport [ 3 ] , hidreport [ 4 ] , hidreport [ 5 ] ) ; BTIF_TRACE_DEBUG ( \"%s:<S2SV_blank><S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>%x<S2SV_blank>\" , __FUNCTION__ , hidreport [ 6 ] , hidreport [ 7 ] , hidreport [ 8 ] ) ; bta_hh_co_write ( fd , hidreport , sizeof ( hidreport ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; TEMP_FAILURE_RETRY ( <S2SV_ModStart> usleep ( 200000 )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20836\n\n```\nCWE-416 static void smp_task_done ( struct sas_task * task ) { <S2SV_StartBug> if ( ! del_timer ( & task -> slow_task -> timer ) ) <S2SV_EndBug> return ; complete ( & task -> slow_task -> completion ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> task ) { <S2SV_ModEnd> del_timer ( & <S2SV_ModStart> -> timer ) <S2SV_ModEnd> ; complete (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 struct sock * cookie_v6_check ( struct sock * sk , struct sk_buff * skb ) { struct tcp_options_received tcp_opt ; struct inet_request_sock * ireq ; struct tcp_request_sock * treq ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct tcp_sock * tp = tcp_sk ( sk ) ; const struct tcphdr * th = tcp_hdr ( skb ) ; __u32 cookie = ntohl ( th -> ack_seq ) - 1 ; struct sock * ret = sk ; struct request_sock * req ; int mss ; struct dst_entry * dst ; __u8 rcv_wscale ; if ( ! sysctl_tcp_syncookies || ! th -> ack || th -> rst ) goto out ; if ( tcp_synq_no_recent_overflow ( sk ) ) goto out ; mss = __cookie_v6_check ( ipv6_hdr ( skb ) , th , cookie ) ; if ( mss == 0 ) { NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_SYNCOOKIESFAILED ) ; goto out ; } NET_INC_STATS_BH ( sock_net ( sk ) , LINUX_MIB_SYNCOOKIESRECV ) ; memset ( & tcp_opt , 0 , sizeof ( tcp_opt ) ) ; tcp_parse_options ( skb , & tcp_opt , 0 , NULL ) ; if ( ! cookie_timestamp_decode ( & tcp_opt ) ) goto out ; ret = NULL ; req = inet_reqsk_alloc ( & tcp6_request_sock_ops , sk , false ) ; if ( ! req ) goto out ; ireq = inet_rsk ( req ) ; treq = tcp_rsk ( req ) ; treq -> tfo_listener = false ; if ( security_inet_conn_request ( sk , skb , req ) ) goto out_free ; req -> mss = mss ; ireq -> ir_rmt_port = th -> source ; ireq -> ir_num = ntohs ( th -> dest ) ; ireq -> ir_v6_rmt_addr = ipv6_hdr ( skb ) -> saddr ; ireq -> ir_v6_loc_addr = ipv6_hdr ( skb ) -> daddr ; if ( ipv6_opt_accepted ( sk , skb , & TCP_SKB_CB ( skb ) -> header . h6 ) || np -> rxopt . bits . rxinfo || np -> rxopt . bits . rxoinfo || np -> rxopt . bits . rxhlim || np -> rxopt . bits . rxohlim ) { atomic_inc ( & skb -> users ) ; ireq -> pktopts = skb ; } ireq -> ir_iif = sk -> sk_bound_dev_if ; if ( ! sk -> sk_bound_dev_if && ipv6_addr_type ( & ireq -> ir_v6_rmt_addr ) & IPV6_ADDR_LINKLOCAL ) ireq -> ir_iif = tcp_v6_iif ( skb ) ; ireq -> ir_mark = inet_request_mark ( sk , skb ) ; req -> num_retrans = 0 ; ireq -> snd_wscale = tcp_opt . snd_wscale ; ireq -> sack_ok = tcp_opt . sack_ok ; ireq -> wscale_ok = tcp_opt . wscale_ok ; ireq -> tstamp_ok = tcp_opt . saw_tstamp ; req -> ts_recent = tcp_opt . saw_tstamp ? tcp_opt . rcv_tsval : 0 ; treq -> snt_synack . v64 = 0 ; treq -> rcv_isn = ntohl ( th -> seq ) - 1 ; treq -> snt_isn = cookie ; { struct in6_addr * final_p , final ; struct flowi6 fl6 ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; fl6 . flowi6_proto = IPPROTO_TCP ; fl6 . daddr = ireq -> ir_v6_rmt_addr ; <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , np -> opt , & final ) ; <S2SV_EndBug> fl6 . saddr = ireq -> ir_v6_loc_addr ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . flowi6_mark = ireq -> ir_mark ; fl6 . fl6_dport = ireq -> ir_rmt_port ; fl6 . fl6_sport = inet_sk ( sk ) -> inet_sport ; security_req_classify_flow ( req , flowi6_to_flowi ( & fl6 ) ) ; dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; if ( IS_ERR ( dst ) ) goto out_free ; } req -> rsk_window_clamp = tp -> window_clamp ? : dst_metric ( dst , RTAX_WINDOW ) ; tcp_select_initial_window ( tcp_full_space ( sk ) , req -> mss , & req -> rsk_rcv_wnd , & req -> rsk_window_clamp , ireq -> wscale_ok , & rcv_wscale , dst_metric ( dst , RTAX_INITRWND ) ) ; ireq -> rcv_wscale = rcv_wscale ; ireq -> ecn_ok = cookie_ecn_ok ( & tcp_opt , sock_net ( sk ) , dst ) ; ret = tcp_get_cookie_sock ( sk , skb , req , dst ) ; out : return ret ; out_free : reqsk_free ( req ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> & fl6 , rcu_dereference ( <S2SV_ModStart> np -> opt )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-4652\n\n```\nCWE-362 static int snd_ctl_elem_add ( struct snd_ctl_file * file , struct snd_ctl_elem_info * info , int replace ) { struct snd_card * card = file -> card ; struct snd_kcontrol kctl , * _kctl ; unsigned int access ; long private_size ; struct user_element * ue ; int idx , err ; if ( ! replace && card -> user_ctl_count >= MAX_USER_CONTROLS ) return - ENOMEM ; if ( info -> count < 1 ) return - EINVAL ; access = info -> access == 0 ? SNDRV_CTL_ELEM_ACCESS_READWRITE : ( info -> access & ( SNDRV_CTL_ELEM_ACCESS_READWRITE | SNDRV_CTL_ELEM_ACCESS_INACTIVE | SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE ) ) ; info -> id . numid = 0 ; memset ( & kctl , 0 , sizeof ( kctl ) ) ; down_write ( & card -> controls_rwsem ) ; _kctl = snd_ctl_find_id ( card , & info -> id ) ; err = 0 ; if ( _kctl ) { if ( replace ) err = snd_ctl_remove ( card , _kctl ) ; else err = - EBUSY ; } else { if ( replace ) err = - ENOENT ; } up_write ( & card -> controls_rwsem ) ; if ( err < 0 ) return err ; memcpy ( & kctl . id , & info -> id , sizeof ( info -> id ) ) ; kctl . count = info -> owner ? info -> owner : 1 ; access |= SNDRV_CTL_ELEM_ACCESS_USER ; if ( info -> type == SNDRV_CTL_ELEM_TYPE_ENUMERATED ) kctl . info = snd_ctl_elem_user_enum_info ; else kctl . info = snd_ctl_elem_user_info ; if ( access & SNDRV_CTL_ELEM_ACCESS_READ ) kctl . get = snd_ctl_elem_user_get ; if ( access & SNDRV_CTL_ELEM_ACCESS_WRITE ) kctl . put = snd_ctl_elem_user_put ; if ( access & SNDRV_CTL_ELEM_ACCESS_TLV_READWRITE ) { kctl . tlv . c = snd_ctl_elem_user_tlv ; access |= SNDRV_CTL_ELEM_ACCESS_TLV_CALLBACK ; } switch ( info -> type ) { case SNDRV_CTL_ELEM_TYPE_BOOLEAN : case SNDRV_CTL_ELEM_TYPE_INTEGER : private_size = sizeof ( long ) ; if ( info -> count > 128 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_INTEGER64 : private_size = sizeof ( long long ) ; if ( info -> count > 64 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_ENUMERATED : private_size = sizeof ( unsigned int ) ; if ( info -> count > 128 || info -> value . enumerated . items == 0 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_BYTES : private_size = sizeof ( unsigned char ) ; if ( info -> count > 512 ) return - EINVAL ; break ; case SNDRV_CTL_ELEM_TYPE_IEC958 : private_size = sizeof ( struct snd_aes_iec958 ) ; if ( info -> count != 1 ) return - EINVAL ; break ; default : return - EINVAL ; } private_size *= info -> count ; ue = kzalloc ( sizeof ( struct user_element ) + private_size , GFP_KERNEL ) ; if ( ue == NULL ) return - ENOMEM ; <S2SV_StartBug> ue -> info = * info ; <S2SV_EndBug> ue -> info . access = 0 ; ue -> elem_data = ( char * ) ue + sizeof ( * ue ) ; ue -> elem_data_size = private_size ; if ( ue -> info . type == SNDRV_CTL_ELEM_TYPE_ENUMERATED ) { err = snd_ctl_elem_init_enum_names ( ue ) ; if ( err < 0 ) { kfree ( ue ) ; return err ; } } kctl . private_free = snd_ctl_elem_user_free ; _kctl = snd_ctl_new ( & kctl , access ) ; if ( _kctl == NULL ) { kfree ( ue -> priv_data ) ; kfree ( ue ) ; return - ENOMEM ; } _kctl -> private_data = ue ; for ( idx = 0 ; idx < _kctl -> count ; idx ++ ) _kctl -> vd [ idx ] . owner = file ; err = snd_ctl_add ( card , _kctl ) ; if ( err < 0 ) return err ; down_write ( & card -> controls_rwsem ) ; card -> user_ctl_count ++ ; up_write ( & card -> controls_rwsem ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; ue -> card = card ; ue ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8839\n\n```\nCWE-362 int ext4_setattr ( struct dentry * dentry , struct iattr * attr ) { struct inode * inode = d_inode ( dentry ) ; int error , rc = 0 ; int orphan = 0 ; const unsigned int ia_valid = attr -> ia_valid ; error = inode_change_ok ( inode , attr ) ; if ( error ) return error ; if ( is_quota_modification ( inode , attr ) ) { error = dquot_initialize ( inode ) ; if ( error ) return error ; } if ( ( ia_valid & ATTR_UID && ! uid_eq ( attr -> ia_uid , inode -> i_uid ) ) || ( ia_valid & ATTR_GID && ! gid_eq ( attr -> ia_gid , inode -> i_gid ) ) ) { handle_t * handle ; handle = ext4_journal_start ( inode , EXT4_HT_QUOTA , ( EXT4_MAXQUOTAS_INIT_BLOCKS ( inode -> i_sb ) + EXT4_MAXQUOTAS_DEL_BLOCKS ( inode -> i_sb ) ) + 3 ) ; if ( IS_ERR ( handle ) ) { error = PTR_ERR ( handle ) ; goto err_out ; } error = dquot_transfer ( inode , attr ) ; if ( error ) { ext4_journal_stop ( handle ) ; return error ; } if ( attr -> ia_valid & ATTR_UID ) inode -> i_uid = attr -> ia_uid ; if ( attr -> ia_valid & ATTR_GID ) inode -> i_gid = attr -> ia_gid ; error = ext4_mark_inode_dirty ( handle , inode ) ; ext4_journal_stop ( handle ) ; } if ( attr -> ia_valid & ATTR_SIZE ) { handle_t * handle ; loff_t oldsize = inode -> i_size ; int shrink = ( attr -> ia_size <= inode -> i_size ) ; if ( ! ( ext4_test_inode_flag ( inode , EXT4_INODE_EXTENTS ) ) ) { struct ext4_sb_info * sbi = EXT4_SB ( inode -> i_sb ) ; if ( attr -> ia_size > sbi -> s_bitmap_maxbytes ) return - EFBIG ; } if ( ! S_ISREG ( inode -> i_mode ) ) return - EINVAL ; if ( IS_I_VERSION ( inode ) && attr -> ia_size != inode -> i_size ) inode_inc_iversion ( inode ) ; if ( ext4_should_order_data ( inode ) && ( attr -> ia_size < inode -> i_size ) ) { error = ext4_begin_ordered_truncate ( inode , attr -> ia_size ) ; if ( error ) goto err_out ; } if ( attr -> ia_size != inode -> i_size ) { handle = ext4_journal_start ( inode , EXT4_HT_INODE , 3 ) ; if ( IS_ERR ( handle ) ) { error = PTR_ERR ( handle ) ; goto err_out ; } if ( ext4_handle_valid ( handle ) && shrink ) { error = ext4_orphan_add ( handle , inode ) ; orphan = 1 ; } if ( ! shrink ) { inode -> i_mtime = ext4_current_time ( inode ) ; inode -> i_ctime = inode -> i_mtime ; } down_write ( & EXT4_I ( inode ) -> i_data_sem ) ; EXT4_I ( inode ) -> i_disksize = attr -> ia_size ; rc = ext4_mark_inode_dirty ( handle , inode ) ; if ( ! error ) error = rc ; if ( ! error ) i_size_write ( inode , attr -> ia_size ) ; up_write ( & EXT4_I ( inode ) -> i_data_sem ) ; ext4_journal_stop ( handle ) ; if ( error ) { if ( orphan ) ext4_orphan_del ( NULL , inode ) ; goto err_out ; } } if ( ! shrink ) pagecache_isize_extended ( inode , oldsize , inode -> i_size ) ; if ( orphan ) { if ( ! ext4_should_journal_data ( inode ) ) { ext4_inode_block_unlocked_dio ( inode ) ; inode_dio_wait ( inode ) ; ext4_inode_resume_unlocked_dio ( inode ) ; } else ext4_wait_for_tail_page_commit ( inode ) ; } <S2SV_StartBug> truncate_pagecache ( inode , inode -> i_size ) ; <S2SV_EndBug> if ( shrink ) <S2SV_StartBug> ext4_truncate ( inode ) ; <S2SV_EndBug> } if ( ! rc ) { setattr_copy ( inode , attr ) ; mark_inode_dirty ( inode ) ; } if ( orphan && inode -> i_nlink ) ext4_orphan_del ( NULL , inode ) ; if ( ! rc && ( ia_valid & ATTR_MODE ) ) rc = posix_acl_chmod ( inode , inode -> i_mode ) ; err_out : ext4_std_error ( inode -> i_sb , error ) ; if ( ! error ) error = rc ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } down_write ( & EXT4_I ( inode ) -> i_mmap_sem ) ; <S2SV_ModStart> ext4_truncate ( inode ) ; up_write ( & EXT4_I ( inode ) -> i_mmap_sem\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-1870\n\n```\nCWE-200 static void save_bt_to_dump_dir ( const char * bt , const char * exe , const char * reason ) { time_t t = time ( NULL ) ; const char * iso_date = iso_date_string ( & t ) ; uid_t my_euid = ( uid_t ) - 1L ; mode_t mode = DEFAULT_DUMP_DIR_MODE | S_IROTH ; if ( ! ( g_opts & OPT_x ) ) { mode = DEFAULT_DUMP_DIR_MODE ; my_euid = geteuid ( ) ; } <S2SV_StartBug> pid_t my_pid = getpid ( ) ; <S2SV_EndBug> char base [ sizeof ( \"xorg-YYYY-MM-DD-hh:mm:ss-%lu-%lu\" ) + 2 * sizeof ( long ) * 3 ] ; sprintf ( base , \"xorg-%s-%lu-%u\" , iso_date , ( long ) my_pid , g_bt_count ) ; char * path = concat_path_file ( debug_dumps_dir , base ) ; struct dump_dir * dd = dd_create ( path , my_euid , mode ) ; if ( dd ) { dd_create_basic_files ( dd , my_euid , NULL ) ; dd_save_text ( dd , FILENAME_ABRT_VERSION , VERSION ) ; dd_save_text ( dd , FILENAME_ANALYZER , \"xorg\" ) ; dd_save_text ( dd , FILENAME_TYPE , \"xorg\" ) ; dd_save_text ( dd , FILENAME_REASON , reason ) ; dd_save_text ( dd , FILENAME_BACKTRACE , bt ) ; if ( ! exe ) { exe = \"/usr/bin/X\" ; if ( access ( \"/usr/bin/Xorg\" , X_OK ) == 0 ) exe = \"/usr/bin/Xorg\" ; } dd_save_text ( dd , FILENAME_EXECUTABLE , exe ) ; dd_close ( dd ) ; notify_new_path ( path ) ; } free ( path ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( g_settings_privatereports ) { if ( ( g_opts & OPT_x ) ) log ( \"Not<S2SV_blank>going<S2SV_blank>to<S2SV_blank>make<S2SV_blank>dump<S2SV_blank>directories<S2SV_blank>world<S2SV_blank>readable<S2SV_blank>because<S2SV_blank>PrivateReports<S2SV_blank>is<S2SV_blank>on\" ) ; mode = DEFAULT_DUMP_DIR_MODE ; my_euid = 0 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0539\n\n```\nCWE-119 IHEVCD_ERROR_T ihevcd_parse_sps ( codec_t * ps_codec ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; WORD32 value ; WORD32 i ; WORD32 vps_id ; WORD32 sps_max_sub_layers ; WORD32 sps_id ; WORD32 sps_temporal_id_nesting_flag ; sps_t * ps_sps ; profile_tier_lvl_info_t s_ptl ; bitstrm_t * ps_bitstrm = & ps_codec -> s_parse . s_bitstrm ; BITS_PARSE ( \"video_parameter_set_id\" , value , ps_bitstrm , 4 ) ; vps_id = value ; vps_id = CLIP3 ( vps_id , 0 , MAX_VPS_CNT - 1 ) ; BITS_PARSE ( \"sps_max_sub_layers_minus1\" , value , ps_bitstrm , 3 ) ; sps_max_sub_layers = value + 1 ; sps_max_sub_layers = CLIP3 ( sps_max_sub_layers , 1 , 7 ) ; BITS_PARSE ( \"sps_temporal_id_nesting_flag\" , value , ps_bitstrm , 1 ) ; sps_temporal_id_nesting_flag = value ; ret = ihevcd_profile_tier_level ( ps_bitstrm , & ( s_ptl ) , 1 , ( sps_max_sub_layers - 1 ) ) ; UEV_PARSE ( \"seq_parameter_set_id\" , value , ps_bitstrm ) ; sps_id = value ; if ( ( sps_id >= MAX_SPS_CNT ) || ( sps_id < 0 ) ) { if ( ps_codec -> i4_sps_done ) return IHEVCD_UNSUPPORTED_SPS_ID ; else sps_id = 0 ; } ps_sps = ( ps_codec -> s_parse . ps_sps_base + MAX_SPS_CNT - 1 ) ; ps_sps -> i1_sps_id = sps_id ; ps_sps -> i1_vps_id = vps_id ; ps_sps -> i1_sps_max_sub_layers = sps_max_sub_layers ; ps_sps -> i1_sps_temporal_id_nesting_flag = sps_temporal_id_nesting_flag ; ps_codec -> i4_sps_id = sps_id ; memcpy ( & ps_sps -> s_ptl , & s_ptl , sizeof ( profile_tier_lvl_info_t ) ) ; UEV_PARSE ( \"chroma_format_idc\" , value , ps_bitstrm ) ; ps_sps -> i1_chroma_format_idc = value ; if ( ps_sps -> i1_chroma_format_idc != CHROMA_FMT_IDC_YUV420 ) { ps_codec -> s_parse . i4_error_code = IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC ; return ( IHEVCD_ERROR_T ) IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC ; } if ( CHROMA_FMT_IDC_YUV444_PLANES == ps_sps -> i1_chroma_format_idc ) { BITS_PARSE ( \"separate_colour_plane_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_separate_colour_plane_flag = value ; } else { ps_sps -> i1_separate_colour_plane_flag = 0 ; } UEV_PARSE ( \"pic_width_in_luma_samples\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_width_in_luma_samples = value ; UEV_PARSE ( \"pic_height_in_luma_samples\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_height_in_luma_samples = value ; if ( ( 0 >= ps_sps -> i2_pic_width_in_luma_samples ) || ( 0 >= ps_sps -> i2_pic_height_in_luma_samples ) ) return IHEVCD_INVALID_PARAMETER ; ps_sps -> i2_pic_width_in_luma_samples = ALIGN8 ( ps_sps -> i2_pic_width_in_luma_samples ) ; ps_sps -> i2_pic_height_in_luma_samples = ALIGN8 ( ps_sps -> i2_pic_height_in_luma_samples ) ; if ( ( ps_sps -> i2_pic_width_in_luma_samples > ps_codec -> i4_max_wd ) || ( ps_sps -> i2_pic_width_in_luma_samples * ps_sps -> i2_pic_height_in_luma_samples > ps_codec -> i4_max_wd * ps_codec -> i4_max_ht ) || ( ps_sps -> i2_pic_height_in_luma_samples > MAX ( ps_codec -> i4_max_wd , ps_codec -> i4_max_ht ) ) ) { ps_codec -> i4_new_max_wd = ps_sps -> i2_pic_width_in_luma_samples ; ps_codec -> i4_new_max_ht = ps_sps -> i2_pic_height_in_luma_samples ; return ( IHEVCD_ERROR_T ) IHEVCD_UNSUPPORTED_DIMENSIONS ; } BITS_PARSE ( \"pic_cropping_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_pic_cropping_flag = value ; if ( ps_sps -> i1_pic_cropping_flag ) { UEV_PARSE ( \"pic_crop_left_offset\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_crop_left_offset = value ; UEV_PARSE ( \"pic_crop_right_offset\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_crop_right_offset = value ; UEV_PARSE ( \"pic_crop_top_offset\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_crop_top_offset = value ; UEV_PARSE ( \"pic_crop_bottom_offset\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_crop_bottom_offset = value ; } else { ps_sps -> i2_pic_crop_left_offset = 0 ; ps_sps -> i2_pic_crop_right_offset = 0 ; ps_sps -> i2_pic_crop_top_offset = 0 ; ps_sps -> i2_pic_crop_bottom_offset = 0 ; } UEV_PARSE ( \"bit_depth_luma_minus8\" , value , ps_bitstrm ) ; if ( 0 != value ) return IHEVCD_UNSUPPORTED_BIT_DEPTH ; UEV_PARSE ( \"bit_depth_chroma_minus8\" , value , ps_bitstrm ) ; if ( 0 != value ) return IHEVCD_UNSUPPORTED_BIT_DEPTH ; UEV_PARSE ( \"log2_max_pic_order_cnt_lsb_minus4\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_max_pic_order_cnt_lsb = value + 4 ; BITS_PARSE ( \"sps_sub_layer_ordering_info_present_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_sps_sub_layer_ordering_info_present_flag = value ; i = ( ps_sps -> i1_sps_sub_layer_ordering_info_present_flag ? 0 : ( ps_sps -> i1_sps_max_sub_layers - 1 ) ) ; for ( ; i < ps_sps -> i1_sps_max_sub_layers ; i ++ ) { UEV_PARSE ( \"max_dec_pic_buffering\" , value , ps_bitstrm ) ; ps_sps -> ai1_sps_max_dec_pic_buffering [ i ] = value + 1 ; <S2SV_StartBug> UEV_PARSE ( \"num_reorder_pics\" , value , ps_bitstrm ) ; <S2SV_EndBug> ps_sps -> ai1_sps_max_num_reorder_pics [ i ] = value ; <S2SV_StartBug> UEV_PARSE ( \"max_latency_increase\" , value , ps_bitstrm ) ; <S2SV_EndBug> ps_sps -> ai1_sps_max_latency_increase [ i ] = value ; } UEV_PARSE ( \"log2_min_coding_block_size_minus3\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_min_coding_block_size = value + 3 ; UEV_PARSE ( \"log2_diff_max_min_coding_block_size\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_diff_max_min_coding_block_size = value ; UEV_PARSE ( \"log2_min_transform_block_size_minus2\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_min_transform_block_size = value + 2 ; UEV_PARSE ( \"log2_diff_max_min_transform_block_size\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_diff_max_min_transform_block_size = value ; ps_sps -> i1_log2_max_transform_block_size = ps_sps -> i1_log2_min_transform_block_size + ps_sps -> i1_log2_diff_max_min_transform_block_size ; ps_sps -> i1_log2_ctb_size = ps_sps -> i1_log2_min_coding_block_size + ps_sps -> i1_log2_diff_max_min_coding_block_size ; if ( ( ps_sps -> i1_log2_min_coding_block_size < 3 ) || ( ps_sps -> i1_log2_min_transform_block_size < 2 ) || ( ps_sps -> i1_log2_diff_max_min_transform_block_size < 0 ) || ( ps_sps -> i1_log2_max_transform_block_size > ps_sps -> i1_log2_ctb_size ) || ( ps_sps -> i1_log2_ctb_size < 4 ) || ( ps_sps -> i1_log2_ctb_size > 6 ) ) { return IHEVCD_INVALID_PARAMETER ; } ps_sps -> i1_log2_min_pcm_coding_block_size = 0 ; ps_sps -> i1_log2_diff_max_min_pcm_coding_block_size = 0 ; UEV_PARSE ( \"max_transform_hierarchy_depth_inter\" , value , ps_bitstrm ) ; ps_sps -> i1_max_transform_hierarchy_depth_inter = value ; UEV_PARSE ( \"max_transform_hierarchy_depth_intra\" , value , ps_bitstrm ) ; ps_sps -> i1_max_transform_hierarchy_depth_intra = value ; BITS_PARSE ( \"scaling_list_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_scaling_list_enable_flag = value ; if ( ps_sps -> i1_scaling_list_enable_flag ) { COPY_DEFAULT_SCALING_LIST ( ps_sps -> pi2_scaling_mat ) ; BITS_PARSE ( \"sps_scaling_list_data_present_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_sps_scaling_list_data_present_flag = value ; if ( ps_sps -> i1_sps_scaling_list_data_present_flag ) ihevcd_scaling_list_data ( ps_codec , ps_sps -> pi2_scaling_mat ) ; } else { COPY_FLAT_SCALING_LIST ( ps_sps -> pi2_scaling_mat ) ; } BITS_PARSE ( \"asymmetric_motion_partitions_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_amp_enabled_flag = value ; BITS_PARSE ( \"sample_adaptive_offset_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_sample_adaptive_offset_enabled_flag = value ; BITS_PARSE ( \"pcm_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_pcm_enabled_flag = value ; if ( ps_sps -> i1_pcm_enabled_flag ) { BITS_PARSE ( \"pcm_sample_bit_depth_luma\" , value , ps_bitstrm , 4 ) ; ps_sps -> i1_pcm_sample_bit_depth_luma = value + 1 ; BITS_PARSE ( \"pcm_sample_bit_depth_chroma\" , value , ps_bitstrm , 4 ) ; ps_sps -> i1_pcm_sample_bit_depth_chroma = value + 1 ; UEV_PARSE ( \"log2_min_pcm_coding_block_size_minus3\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_min_pcm_coding_block_size = value + 3 ; UEV_PARSE ( \"log2_diff_max_min_pcm_coding_block_size\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_diff_max_min_pcm_coding_block_size = value ; BITS_PARSE ( \"pcm_loop_filter_disable_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_pcm_loop_filter_disable_flag = value ; } UEV_PARSE ( \"num_short_term_ref_pic_sets\" , value , ps_bitstrm ) ; ps_sps -> i1_num_short_term_ref_pic_sets = value ; ps_sps -> i1_num_short_term_ref_pic_sets = CLIP3 ( ps_sps -> i1_num_short_term_ref_pic_sets , 0 , MAX_STREF_PICS_SPS ) ; for ( i = 0 ; i < ps_sps -> i1_num_short_term_ref_pic_sets ; i ++ ) ihevcd_short_term_ref_pic_set ( ps_bitstrm , & ps_sps -> as_stref_picset [ 0 ] , ps_sps -> i1_num_short_term_ref_pic_sets , i , & ps_sps -> as_stref_picset [ i ] ) ; BITS_PARSE ( \"long_term_ref_pics_present_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_long_term_ref_pics_present_flag = value ; if ( ps_sps -> i1_long_term_ref_pics_present_flag ) { UEV_PARSE ( \"num_long_term_ref_pics_sps\" , value , ps_bitstrm ) ; ps_sps -> i1_num_long_term_ref_pics_sps = value ; for ( i = 0 ; i < ps_sps -> i1_num_long_term_ref_pics_sps ; i ++ ) { BITS_PARSE ( \"lt_ref_pic_poc_lsb_sps[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , ps_sps -> i1_log2_max_pic_order_cnt_lsb ) ; ps_sps -> ai1_lt_ref_pic_poc_lsb_sps [ i ] = value ; BITS_PARSE ( \"used_by_curr_pic_lt_sps_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; ps_sps -> ai1_used_by_curr_pic_lt_sps_flag [ i ] = value ; } } BITS_PARSE ( \"sps_temporal_mvp_enable_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_sps_temporal_mvp_enable_flag = value ; BITS_PARSE ( \"sps_strong_intra_smoothing_enable_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_strong_intra_smoothing_enable_flag = value ; BITS_PARSE ( \"vui_parameters_present_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_vui_parameters_present_flag = value ; if ( ps_sps -> i1_vui_parameters_present_flag ) ihevcd_parse_vui_parameters ( ps_bitstrm , & ps_sps -> s_vui_parameters , ps_sps -> i1_sps_max_sub_layers - 1 ) ; BITS_PARSE ( \"sps_extension_flag\" , value , ps_bitstrm , 1 ) ; { WORD32 numerator ; WORD32 ceil_offset ; ceil_offset = ( 1 << ps_sps -> i1_log2_ctb_size ) - 1 ; numerator = ps_sps -> i2_pic_width_in_luma_samples ; ps_sps -> i2_pic_wd_in_ctb = ( ( numerator + ceil_offset ) / ( 1 << ps_sps -> i1_log2_ctb_size ) ) ; numerator = ps_sps -> i2_pic_height_in_luma_samples ; ps_sps -> i2_pic_ht_in_ctb = ( ( numerator + ceil_offset ) / ( 1 << ps_sps -> i1_log2_ctb_size ) ) ; ps_sps -> i4_pic_size_in_ctb = ps_sps -> i2_pic_ht_in_ctb * ps_sps -> i2_pic_wd_in_ctb ; if ( 0 == ps_codec -> i4_sps_done ) ps_codec -> s_parse . i4_next_ctb_indx = ps_sps -> i4_pic_size_in_ctb ; numerator = ps_sps -> i2_pic_width_in_luma_samples ; ps_sps -> i2_pic_wd_in_min_cb = numerator / ( 1 << ps_sps -> i1_log2_min_coding_block_size ) ; numerator = ps_sps -> i2_pic_height_in_luma_samples ; ps_sps -> i2_pic_ht_in_min_cb = numerator / ( 1 << ps_sps -> i1_log2_min_coding_block_size ) ; } if ( ( 0 != ps_codec -> i4_first_pic_done ) && ( ( ps_codec -> i4_wd != ps_sps -> i2_pic_width_in_luma_samples ) || ( ps_codec -> i4_ht != ps_sps -> i2_pic_height_in_luma_samples ) ) ) { ps_codec -> i4_reset_flag = 1 ; ps_codec -> i4_error_code = IVD_RES_CHANGED ; return ( IHEVCD_ERROR_T ) IHEVCD_FAIL ; } { WORD32 disp_wd , disp_ht ; WORD32 crop_unit_x , crop_unit_y ; crop_unit_x = 1 ; crop_unit_y = 1 ; if ( CHROMA_FMT_IDC_YUV420 == ps_sps -> i1_chroma_format_idc ) { crop_unit_x = 2 ; crop_unit_y = 2 ; } disp_wd = ps_sps -> i2_pic_width_in_luma_samples ; disp_wd -= ps_sps -> i2_pic_crop_left_offset * crop_unit_x ; disp_wd -= ps_sps -> i2_pic_crop_right_offset * crop_unit_x ; disp_ht = ps_sps -> i2_pic_height_in_luma_samples ; disp_ht -= ps_sps -> i2_pic_crop_top_offset * crop_unit_y ; disp_ht -= ps_sps -> i2_pic_crop_bottom_offset * crop_unit_y ; if ( ( 0 >= disp_wd ) || ( 0 >= disp_ht ) ) return IHEVCD_INVALID_PARAMETER ; ps_codec -> i4_disp_wd = disp_wd ; ps_codec -> i4_disp_ht = disp_ht ; ps_codec -> i4_wd = ps_sps -> i2_pic_width_in_luma_samples ; ps_codec -> i4_ht = ps_sps -> i2_pic_height_in_luma_samples ; { WORD32 ref_strd ; ref_strd = ALIGN32 ( ps_sps -> i2_pic_width_in_luma_samples + PAD_WD ) ; if ( ps_codec -> i4_strd < ref_strd ) { ps_codec -> i4_strd = ref_strd ; } } if ( 0 == ps_codec -> i4_share_disp_buf ) { if ( ps_codec -> i4_disp_strd < ps_codec -> i4_disp_wd ) { ps_codec -> i4_disp_strd = ps_codec -> i4_disp_wd ; } } else { if ( ps_codec -> i4_disp_strd < ps_codec -> i4_strd ) { ps_codec -> i4_disp_strd = ps_codec -> i4_strd ; } } } ps_codec -> i4_sps_done = 1 ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + 1 ; if ( ps_sps -> ai1_sps_max_dec_pic_buffering [ i ] > MAX_DPB_SIZE ) { return IHEVCD_INVALID_PARAMETER ; } <S2SV_ModStart> = value ; if ( ps_sps -> ai1_sps_max_num_reorder_pics [ i ] > ps_sps -> ai1_sps_max_dec_pic_buffering [ i ] ) { return IHEVCD_INVALID_PARAMETER ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7374\n\n```\nCWE-416 static void put_crypt_info ( struct fscrypt_info * ci ) { if ( ! ci ) return ; <S2SV_StartBug> key_put ( ci -> ci_keyring_key ) ; <S2SV_EndBug> crypto_free_skcipher ( ci -> ci_ctfm ) ; kmem_cache_free ( fscrypt_info_cachep , ci ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) return ; <S2SV_ModEnd> crypto_free_skcipher ( ci\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14354\n\n```\nCWE-78 int imap_subscribe ( char * path , bool subscribe ) { struct ImapData * idata = NULL ; char buf [ LONG_STRING ] ; char mbox [ LONG_STRING ] ; char errstr [ STRING ] ; struct Buffer err , token ; struct ImapMbox mx ; <S2SV_StartBug> if ( ! mx_is_imap ( path ) || imap_parse_path ( path , & mx ) || ! mx . mbox ) <S2SV_EndBug> { mutt_error ( _ ( \"Bad<S2SV_blank>mailbox<S2SV_blank>name\" ) ) ; return - 1 ; } idata = imap_conn_find ( & ( mx . account ) , 0 ) ; if ( ! idata ) goto fail ; imap_fix_path ( idata , mx . mbox , buf , sizeof ( buf ) ) ; if ( ! * buf ) mutt_str_strfcpy ( buf , \"INBOX\" , sizeof ( buf ) ) ; if ( ImapCheckSubscribed ) { mutt_buffer_init ( & token ) ; mutt_buffer_init ( & err ) ; err . data = errstr ; err . dsize = sizeof ( errstr ) ; <S2SV_StartBug> snprintf ( mbox , sizeof ( mbox ) , \"%smailboxes<S2SV_blank>\\\\\"%s\\\\\"\" , subscribe ? \"\" : \"un\" , path ) ; <S2SV_EndBug> if ( mutt_parse_rc_line ( mbox , & token , & err ) ) mutt_debug ( 1 , \"Error<S2SV_blank>adding<S2SV_blank>subscribed<S2SV_blank>mailbox:<S2SV_blank>%s\\\\n\" , errstr ) ; FREE ( & token . data ) ; } if ( subscribe ) mutt_message ( _ ( \"Subscribing<S2SV_blank>to<S2SV_blank>%s...\" ) , buf ) ; else mutt_message ( _ ( \"Unsubscribing<S2SV_blank>from<S2SV_blank>%s...\" ) , buf ) ; imap_munge_mbox_name ( idata , mbox , sizeof ( mbox ) , buf ) ; snprintf ( buf , sizeof ( buf ) , \"%sSUBSCRIBE<S2SV_blank>%s\" , subscribe ? \"\" : \"UN\" , mbox ) ; if ( imap_exec ( idata , buf , 0 ) < 0 ) goto fail ; imap_unmunge_mbox_name ( idata , mx . mbox ) ; if ( subscribe ) mutt_message ( _ ( \"Subscribed<S2SV_blank>to<S2SV_blank>%s\" ) , mx . mbox ) ; else mutt_message ( _ ( \"Unsubscribed<S2SV_blank>from<S2SV_blank>%s\" ) , mx . mbox ) ; FREE ( & mx . mbox ) ; return 0 ; fail : FREE ( & mx . mbox ) ; return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ImapMbox mx ; size_t len = 0 ; <S2SV_ModStart> errstr ) ; len = <S2SV_ModStart> mbox ) , \"%smailboxes<S2SV_blank>\" <S2SV_ModEnd> , subscribe ? <S2SV_ModStart> \"\" : \"un\" ) ; imap_quote_string ( mbox + len , sizeof ( mbox ) - len , path , true <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 static void handle_ppp ( netdissect_options * ndo , u_int proto , const u_char * p , int length ) { if ( ( proto & 0xff00 ) == 0x7e00 ) { ppp_hdlc ( ndo , p - 1 , length ) ; return ; } switch ( proto ) { case PPP_LCP : case PPP_IPCP : case PPP_OSICP : case PPP_MPLSCP : case PPP_IPV6CP : case PPP_CCP : case PPP_BACP : handle_ctrl_proto ( ndo , proto , p , length ) ; break ; case PPP_ML : handle_mlppp ( ndo , p , length ) ; break ; case PPP_CHAP : handle_chap ( ndo , p , length ) ; break ; case PPP_PAP : handle_pap ( ndo , p , length ) ; break ; case PPP_BAP : handle_bap ( ndo , p , length ) ; break ; case ETHERTYPE_IP : case PPP_VJNC : case PPP_IP : ip_print ( ndo , p , length ) ; break ; case ETHERTYPE_IPV6 : case PPP_IPV6 : ip6_print ( ndo , p , length ) ; break ; case ETHERTYPE_IPX : case PPP_IPX : ipx_print ( ndo , p , length ) ; break ; case PPP_OSI : <S2SV_StartBug> isoclns_print ( ndo , p , length , length ) ; <S2SV_EndBug> break ; case PPP_MPLS_UCAST : case PPP_MPLS_MCAST : mpls_print ( ndo , p , length ) ; break ; case PPP_COMP : ND_PRINT ( ( ndo , \"compressed<S2SV_blank>PPP<S2SV_blank>data\" ) ) ; break ; default : ND_PRINT ( ( ndo , \"%s<S2SV_blank>\" , tok2str ( ppptype2str , \"unknown<S2SV_blank>PPP<S2SV_blank>protocol<S2SV_blank>(0x%04x)\" , proto ) ) ) ; print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , length ) ; break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> p , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 void big_key_describe ( const struct key * key , struct seq_file * m ) { size_t datalen = ( size_t ) key -> payload . data [ big_key_len ] ; seq_puts ( m , key -> description ) ; <S2SV_StartBug> if ( key_is_instantiated ( key ) ) <S2SV_EndBug> seq_printf ( m , \":<S2SV_blank>%zu<S2SV_blank>[%s]\" , datalen , datalen > BIG_KEY_FILE_THRESHOLD ? \"file\" : \"buff\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( key )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4299\n\n```\nCWE-264 static int read_exceptions ( struct pstore * ps , int ( * callback ) ( void * callback_context , chunk_t old , chunk_t new ) , void * callback_context ) { int r , full = 1 ; for ( ps -> current_area = 0 ; full ; ps -> current_area ++ ) { r = area_io ( ps , READ ) ; if ( r ) return r ; r = insert_exceptions ( ps , callback , callback_context , & full ) ; if ( r ) return r ; } ps -> current_area -- ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> current_area -- ; skip_metadata ( ps ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3346\n\n```\nCWE-119 static void scsi_read_complete ( void * opaque , int ret ) { SCSIDiskReq * r = ( SCSIDiskReq * ) opaque ; SCSIDiskState * s = DO_UPCAST ( SCSIDiskState , qdev , r -> req . dev ) ; int n ; if ( r -> req . aiocb != NULL ) { r -> req . aiocb = NULL ; bdrv_acct_done ( s -> bs , & r -> acct ) ; } if ( ret ) { if ( scsi_handle_rw_error ( r , - ret , SCSI_REQ_STATUS_RETRY_READ ) ) { return ; } } <S2SV_StartBug> DPRINTF ( \"Data<S2SV_blank>ready<S2SV_blank>tag=0x%x<S2SV_blank>len=%zd\\\\n\" , r -> req . tag , r -> iov . iov_len ) ; <S2SV_EndBug> <S2SV_StartBug> n = r -> iov . iov_len / 512 ; <S2SV_EndBug> r -> sector += n ; r -> sector_count -= n ; <S2SV_StartBug> scsi_req_data ( & r -> req , r -> iov . iov_len ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , r -> qiov . size <S2SV_ModEnd> ) ; n <S2SV_ModStart> = r -> qiov . size <S2SV_ModEnd> / 512 ; <S2SV_ModStart> , r -> qiov . size <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1759\n\n```\nCWE-189 asmlinkage long sys_oabi_semtimedop ( int semid , struct oabi_sembuf __user * tsops , unsigned nsops , const struct timespec __user * timeout ) { struct sembuf * sops ; struct timespec local_timeout ; long err ; int i ; <S2SV_StartBug> if ( nsops < 1 ) <S2SV_EndBug> return - EINVAL ; sops = kmalloc ( sizeof ( * sops ) * nsops , GFP_KERNEL ) ; if ( ! sops ) return - ENOMEM ; err = 0 ; for ( i = 0 ; i < nsops ; i ++ ) { __get_user_error ( sops [ i ] . sem_num , & tsops -> sem_num , err ) ; __get_user_error ( sops [ i ] . sem_op , & tsops -> sem_op , err ) ; __get_user_error ( sops [ i ] . sem_flg , & tsops -> sem_flg , err ) ; tsops ++ ; } if ( timeout ) { err |= copy_from_user ( & local_timeout , timeout , sizeof ( * timeout ) ) ; timeout = & local_timeout ; } if ( err ) { err = - EFAULT ; } else { mm_segment_t fs = get_fs ( ) ; set_fs ( KERNEL_DS ) ; err = sys_semtimedop ( semid , sops , nsops , timeout ) ; set_fs ( fs ) ; } kfree ( sops ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nsops < 1 || nsops > SEMOPM\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_rc_get_one_pass_cbr_params ( VP9_COMP * cpi ) { VP9_COMMON * const cm = & cpi -> common ; RATE_CONTROL * const rc = & cpi -> rc ; int target ; if ( ( cm -> current_video_frame == 0 || <S2SV_StartBug> ( cm -> frame_flags & FRAMEFLAGS_KEY ) || <S2SV_EndBug> rc -> frames_to_key == 0 || <S2SV_StartBug> ( cpi -> oxcf . auto_key && test_for_kf_one_pass ( cpi ) ) ) ) { <S2SV_EndBug> cm -> frame_type = KEY_FRAME ; rc -> this_key_frame_forced = cm -> current_video_frame != 0 && rc -> frames_to_key == 0 ; <S2SV_StartBug> rc -> frames_to_key = cpi -> key_frame_frequency ; <S2SV_EndBug> rc -> kf_boost = DEFAULT_KF_BOOST ; <S2SV_StartBug> rc -> source_alt_ref_active = 0 ; <S2SV_EndBug> target = calc_iframe_target_size_one_pass_cbr ( cpi ) ; } else { cm -> frame_type = INTER_FRAME ; <S2SV_StartBug> target = calc_pframe_target_size_one_pass_cbr ( cpi ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug> vp9_rc_set_frame_target ( cpi , target ) ; <S2SV_StartBug> rc -> frames_till_gf_update_due = INT_MAX ; <S2SV_EndBug> rc -> baseline_gf_interval = INT_MAX ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 0 || ( cpi <S2SV_ModEnd> -> frame_flags & <S2SV_ModStart> . auto_key && 0 <S2SV_ModEnd> ) ) ) <S2SV_ModStart> = cpi -> oxcf . key_freq <S2SV_ModEnd> ; rc -> <S2SV_ModStart> source_alt_ref_active = 0 <S2SV_ModEnd> ; } else <S2SV_ModStart> = INTER_FRAME ; } if ( rc -> frames_till_gf_update_due == 0 ) { if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) vp9_cyclic_refresh_set_golden_update ( cpi ) ; else rc -> baseline_gf_interval = ( rc -> min_gf_interval + rc -> max_gf_interval ) / 2 ; rc -> frames_till_gf_update_due = rc -> baseline_gf_interval ; if ( rc -> frames_till_gf_update_due > rc -> frames_to_key ) rc -> frames_till_gf_update_due = rc -> frames_to_key ; cpi -> refresh_golden_frame = 1 ; rc -> gfu_boost = DEFAULT_GF_BOOST ; } if ( cpi -> oxcf . aq_mode == CYCLIC_REFRESH_AQ ) vp9_cyclic_refresh_update_parameters ( cpi ) ; if ( cm -> frame_type == KEY_FRAME ) target = calc_iframe_target_size_one_pass_cbr ( cpi ) ; else target = <S2SV_ModEnd> calc_pframe_target_size_one_pass_cbr ( cpi <S2SV_ModStart> cpi ) ; <S2SV_ModEnd> vp9_rc_set_frame_target ( cpi <S2SV_ModStart> target ) ; if ( cpi -> oxcf . resize_mode == RESIZE_DYNAMIC ) cpi -> resize_pending = vp9_resize_one_pass_cbr ( cpi ) ; else cpi -> resize_pending = 0 <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-30199\n\n```\nCWE-476 GF_Err latm_dmx_process ( GF_Filter * filter ) { GF_LATMDmxCtx * ctx = gf_filter_get_udta ( filter ) ; GF_FilterPacket * pck , * dst_pck ; u32 pos ; <S2SV_StartBug> u8 * data , * output ; <S2SV_EndBug> <S2SV_StartBug> u32 pck_size , prev_pck_size ; <S2SV_EndBug> u64 cts = GF_FILTER_NO_TS ; if ( ctx -> in_error ) return ctx -> in_error ; if ( ! ctx -> duration . num ) latm_dmx_check_dur ( filter , ctx ) ; if ( ctx -> opid && ! ctx -> is_playing ) return GF_OK ; pck = gf_filter_pid_get_packet ( ctx -> ipid ) ; if ( ! pck ) { if ( gf_filter_pid_is_eos ( ctx -> ipid ) ) { if ( ! ctx -> latm_buffer_size ) { if ( ctx -> opid ) gf_filter_pid_set_eos ( ctx -> opid ) ; if ( ctx -> src_pck ) gf_filter_pck_unref ( ctx -> src_pck ) ; ctx -> src_pck = NULL ; return GF_EOS ; } } else { return GF_OK ; } <S2SV_StartBug> } <S2SV_EndBug> <S2SV_StartBug> data = ( char * ) gf_filter_pck_get_data ( pck , & pck_size ) ; <S2SV_EndBug> if ( ctx -> timescale && pck ) { cts = gf_filter_pck_get_cts ( pck ) ; } prev_pck_size = ctx -> latm_buffer_size ; if ( pck && ! ctx -> resume_from ) { if ( ctx -> latm_buffer_size + pck_size > ctx -> latm_buffer_alloc ) { ctx -> latm_buffer_alloc = ctx -> latm_buffer_size + pck_size ; ctx -> latm_buffer = gf_realloc ( ctx -> latm_buffer , ctx -> latm_buffer_alloc ) ; } memcpy ( ctx -> latm_buffer + ctx -> latm_buffer_size , data , pck_size ) ; ctx -> latm_buffer_size += pck_size ; } if ( ! ctx -> bs ) ctx -> bs = gf_bs_new ( ctx -> latm_buffer , ctx -> latm_buffer_size , GF_BITSTREAM_READ ) ; else gf_bs_reassign_buffer ( ctx -> bs , ctx -> latm_buffer , ctx -> latm_buffer_size ) ; if ( ctx -> resume_from ) { gf_bs_seek ( ctx -> bs , ctx -> resume_from - 1 ) ; ctx -> resume_from = 0 ; } if ( cts == GF_FILTER_NO_TS ) prev_pck_size = 0 ; while ( 1 ) { pos = ( u32 ) gf_bs_get_position ( ctx -> bs ) ; u8 latm_buffer [ 4096 ] ; u32 latm_frame_size = 4096 ; if ( ! latm_dmx_sync_frame_bs ( ctx -> bs , & ctx -> acfg , & latm_frame_size , latm_buffer , NULL ) ) break ; if ( ctx -> in_seek ) { u64 nb_samples_at_seek = ( u64 ) ( ctx -> start_range * GF_M4ASampleRates [ ctx -> sr_idx ] ) ; if ( ctx -> cts + ctx -> dts_inc >= nb_samples_at_seek ) { ctx -> in_seek = GF_FALSE ; } } latm_dmx_check_pid ( filter , ctx ) ; if ( ! ctx -> is_playing ) { ctx -> resume_from = pos + 1 ; return GF_OK ; } if ( ! ctx -> in_seek ) { GF_FilterSAPType sap = GF_FILTER_SAP_1 ; dst_pck = gf_filter_pck_new_alloc ( ctx -> opid , latm_frame_size , & output ) ; if ( ctx -> src_pck ) gf_filter_pck_merge_properties ( ctx -> src_pck , dst_pck ) ; memcpy ( output , latm_buffer , latm_frame_size ) ; gf_filter_pck_set_cts ( dst_pck , ctx -> cts ) ; gf_filter_pck_set_duration ( dst_pck , ctx -> dts_inc ) ; gf_filter_pck_set_framing ( dst_pck , GF_TRUE , GF_TRUE ) ; if ( ctx -> acfg . base_object_type == GF_CODECID_USAC ) { if ( latm_frame_size && ( output [ 0 ] & 0x80 ) && ! ctx -> prev_sap ) { sap = GF_FILTER_SAP_1 ; ctx -> prev_sap = GF_TRUE ; } else { sap = GF_FILTER_SAP_NONE ; ctx -> prev_sap = GF_FALSE ; } } gf_filter_pck_set_sap ( dst_pck , sap ) ; gf_filter_pck_send ( dst_pck ) ; } latm_dmx_update_cts ( ctx ) ; if ( prev_pck_size ) { pos = ( u32 ) gf_bs_get_position ( ctx -> bs ) ; if ( prev_pck_size <= pos ) { prev_pck_size = 0 ; if ( ctx -> src_pck ) gf_filter_pck_unref ( ctx -> src_pck ) ; ctx -> src_pck = pck ; if ( pck ) gf_filter_pck_ref_props ( & ctx -> src_pck ) ; } } } if ( pck ) { pos = ( u32 ) gf_bs_get_position ( ctx -> bs ) ; assert ( ctx -> latm_buffer_size >= pos ) ; memmove ( ctx -> latm_buffer , ctx -> latm_buffer + pos , ctx -> latm_buffer_size - pos ) ; ctx -> latm_buffer_size -= pos ; gf_filter_pid_drop_packet ( ctx -> ipid ) ; assert ( ! ctx -> resume_from ) ; } else { ctx -> latm_buffer_size = 0 ; return latm_dmx_process ( filter ) ; } return GF_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u8 * data = NULL <S2SV_ModStart> ; u32 pck_size = 0 <S2SV_ModStart> ; } } else { <S2SV_ModStart> pck_size ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int VP8_UVSSE ( MACROBLOCK * x ) { unsigned char * uptr , * vptr ; unsigned char * upred_ptr = ( * ( x -> block [ 16 ] . base_src ) + x -> block [ 16 ] . src ) ; unsigned char * vpred_ptr = ( * ( x -> block [ 20 ] . base_src ) + x -> block [ 20 ] . src ) ; int uv_stride = x -> block [ 16 ] . src_stride ; unsigned int sse1 = 0 ; unsigned int sse2 = 0 ; int mv_row = x -> e_mbd . mode_info_context -> mbmi . mv . as_mv . row ; int mv_col = x -> e_mbd . mode_info_context -> mbmi . mv . as_mv . col ; int offset ; int pre_stride = x -> e_mbd . pre . uv_stride ; if ( mv_row < 0 ) mv_row -= 1 ; else mv_row += 1 ; if ( mv_col < 0 ) mv_col -= 1 ; else mv_col += 1 ; mv_row /= 2 ; mv_col /= 2 ; offset = ( mv_row >> 3 ) * pre_stride + ( mv_col >> 3 ) ; uptr = x -> e_mbd . pre . u_buffer + offset ; vptr = x -> e_mbd . pre . v_buffer + offset ; if ( ( mv_row | mv_col ) & 7 ) { <S2SV_StartBug> vp8_sub_pixel_variance8x8 ( uptr , pre_stride , <S2SV_EndBug> mv_col & 7 , mv_row & 7 , upred_ptr , uv_stride , & sse2 ) ; <S2SV_StartBug> vp8_sub_pixel_variance8x8 ( vptr , pre_stride , <S2SV_EndBug> mv_col & 7 , mv_row & 7 , vpred_ptr , uv_stride , & sse1 ) ; sse2 += sse1 ; } else { <S2SV_StartBug> vp8_variance8x8 ( uptr , pre_stride , <S2SV_EndBug> upred_ptr , uv_stride , & sse2 ) ; <S2SV_StartBug> vp8_variance8x8 ( vptr , pre_stride , <S2SV_EndBug> vpred_ptr , uv_stride , & sse1 ) ; sse2 += sse1 ; } return sse2 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 7 ) { vpx_sub_pixel_variance8x8 <S2SV_ModEnd> ( uptr , <S2SV_ModStart> sse2 ) ; vpx_sub_pixel_variance8x8 <S2SV_ModEnd> ( vptr , <S2SV_ModStart> } else { vpx_variance8x8 <S2SV_ModEnd> ( uptr , <S2SV_ModStart> sse2 ) ; vpx_variance8x8 <S2SV_ModEnd> ( vptr ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void super_block_uvrd ( const VP9_COMP * cpi , MACROBLOCK * x , <S2SV_EndBug> int * rate , int64_t * distortion , int * skippable , int64_t * sse , BLOCK_SIZE bsize , int64_t ref_best_rd ) { MACROBLOCKD * const xd = & x -> e_mbd ; MB_MODE_INFO * const mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> TX_SIZE uv_txfm_size = get_uv_tx_size ( mbmi ) ; <S2SV_EndBug> int plane ; int pnrate = 0 , pnskip = 1 ; int64_t pndist = 0 , pnsse = 0 ; <S2SV_StartBug> if ( ref_best_rd < 0 ) <S2SV_EndBug> <S2SV_StartBug> goto term ; <S2SV_EndBug> <S2SV_StartBug> if ( is_inter_block ( mbmi ) ) { <S2SV_EndBug> int plane ; for ( plane = 1 ; plane < MAX_MB_PLANE ; ++ plane ) vp9_subtract_plane ( x , bsize , plane ) ; } * rate = 0 ; * distortion = 0 ; * sse = 0 ; * skippable = 1 ; for ( plane = 1 ; plane < MAX_MB_PLANE ; ++ plane ) { txfm_rd_in_plane ( x , & pnrate , & pndist , & pnskip , & pnsse , <S2SV_StartBug> ref_best_rd , plane , bsize , uv_txfm_size , <S2SV_EndBug> cpi -> sf . use_fast_coef_costing ) ; if ( pnrate == INT_MAX ) <S2SV_StartBug> goto term ; <S2SV_EndBug> * rate += pnrate ; * distortion += pndist ; * sse += pnsse ; * skippable &= pnskip ; } <S2SV_StartBug> return ; <S2SV_EndBug> term : * rate = INT_MAX ; * distortion = INT64_MAX ; * sse = INT64_MAX ; * skippable = 0 ; return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> super_block_uvrd ( const <S2SV_ModStart> -> mbmi ; const TX_SIZE uv_tx_size <S2SV_ModEnd> = get_uv_tx_size ( <S2SV_ModStart> get_uv_tx_size ( mbmi , & xd -> plane [ 1 ] <S2SV_ModStart> = 0 ; int is_cost_valid = 1 ; <S2SV_ModStart> < 0 ) is_cost_valid = 0 <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( mbmi ) && is_cost_valid <S2SV_ModStart> , bsize , uv_tx_size <S2SV_ModEnd> , cpi -> <S2SV_ModStart> == INT_MAX ) { is_cost_valid = 0 ; break ; } <S2SV_ModEnd> * rate += <S2SV_ModStart> pnskip ; } if ( ! is_cost_valid ) { * rate = INT_MAX ; * distortion = INT64_MAX ; * sse = INT64_MAX ; * skippable = 0 ; } return is_cost_valid <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3673\n\n```\nCWE-20 <S2SV_StartBug> int sctp_verify_asconf ( const struct sctp_association * asoc , <S2SV_EndBug> <S2SV_StartBug> struct sctp_paramhdr * param_hdr , void * chunk_end , <S2SV_EndBug> struct sctp_paramhdr * * errp ) { <S2SV_StartBug> sctp_addip_param_t * asconf_param ; <S2SV_EndBug> union sctp_params param ; <S2SV_StartBug> int length , plen ; <S2SV_EndBug> <S2SV_StartBug> param . v = ( sctp_paramhdr_t * ) param_hdr ; <S2SV_EndBug> while ( param . v <= chunk_end - sizeof ( sctp_paramhdr_t ) ) { length = ntohs ( param . p -> length ) ; * errp = param . p ; if ( param . v > chunk_end - length || length < sizeof ( sctp_paramhdr_t ) ) return 0 ; switch ( param . p -> type ) { case SCTP_PARAM_ADD_IP : case SCTP_PARAM_DEL_IP : case SCTP_PARAM_SET_PRIMARY : asconf_param = ( sctp_addip_param_t * ) param . v ; plen = ntohs ( asconf_param -> param_hdr . length ) ; if ( plen < sizeof ( sctp_addip_param_t ) + sizeof ( sctp_paramhdr_t ) ) return 0 ; break ; case SCTP_PARAM_SUCCESS_REPORT : case SCTP_PARAM_ADAPTATION_LAYER_IND : if ( length != sizeof ( sctp_addip_param_t ) ) return 0 ; break ; default : break ; } param . v += WORD_ROUND ( length ) ; } if ( param . v != chunk_end ) return 0 ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> bool <S2SV_ModEnd> sctp_verify_asconf ( const <S2SV_ModStart> asoc , struct sctp_chunk * chunk , bool addr_param_needed <S2SV_ModEnd> , struct sctp_paramhdr <S2SV_ModStart> errp ) { sctp_addip_chunk_t * addip = ( sctp_addip_chunk_t * ) chunk -> chunk_hdr <S2SV_ModEnd> ; union sctp_params <S2SV_ModStart> sctp_params param ; bool addr_param_seen = false ; sctp_walk_params ( param , addip , addip_hdr . params ) { size_t length = ntohs ( param . p -> length ) ; * errp = param . p ; switch ( param . p -> type ) { case SCTP_PARAM_ERR_CAUSE : break ; case SCTP_PARAM_IPV4_ADDRESS : if ( length != sizeof ( sctp_ipv4addr_param_t ) ) return false ; addr_param_seen = true ; break ; case SCTP_PARAM_IPV6_ADDRESS : if ( length != sizeof ( sctp_ipv6addr_param_t ) ) return false ; addr_param_seen = true ; break ; case SCTP_PARAM_ADD_IP : case SCTP_PARAM_DEL_IP : case SCTP_PARAM_SET_PRIMARY : if ( addr_param_needed && ! addr_param_seen ) return false ; length = ntohs ( param . addip -> param_hdr . length ) ; if ( length < sizeof ( sctp_addip_param_t ) + sizeof ( sctp_paramhdr_t ) ) return false ; break ; case SCTP_PARAM_SUCCESS_REPORT : case SCTP_PARAM_ADAPTATION_LAYER_IND : if ( length != sizeof ( sctp_addip_param_t ) ) return false ; break ; default : return false ; } } if ( addr_param_needed && ! addr_param_seen ) return false ; if ( ! addr_param_needed && addr_param_seen ) return false ; if ( <S2SV_ModEnd> param . v <S2SV_ModStart> param . v != chunk -> chunk_end ) return false ; return true <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8852\n\n```\nCWE-000 static void http_splitheader ( struct http * hp , int req ) { char * p , * q , * * hh ; int n ; char buf [ 20 ] ; CHECK_OBJ_NOTNULL ( hp , HTTP_MAGIC ) ; if ( req ) { memset ( hp -> req , 0 , sizeof hp -> req ) ; hh = hp -> req ; } else { memset ( hp -> resp , 0 , sizeof hp -> resp ) ; hh = hp -> resp ; } n = 0 ; p = hp -> rxbuf ; while ( vct_islws ( * p ) ) p ++ ; hh [ n ++ ] = p ; while ( ! vct_islws ( * p ) ) p ++ ; <S2SV_StartBug> assert ( ! vct_iscrlf ( * p ) ) ; <S2SV_EndBug> * p ++ = '\\\\0' ; while ( vct_issp ( * p ) ) p ++ ; <S2SV_StartBug> assert ( ! vct_iscrlf ( * p ) ) ; <S2SV_EndBug> hh [ n ++ ] = p ; while ( ! vct_islws ( * p ) ) p ++ ; <S2SV_StartBug> if ( vct_iscrlf ( * p ) ) { <S2SV_EndBug> hh [ n ++ ] = NULL ; q = p ; p += vct_skipcrlf ( p ) ; * q = '\\\\0' ; } else { * p ++ = '\\\\0' ; while ( vct_issp ( * p ) ) p ++ ; hh [ n ++ ] = p ; <S2SV_StartBug> while ( ! vct_iscrlf ( * p ) ) <S2SV_EndBug> p ++ ; q = p ; p += vct_skipcrlf ( p ) ; * q = '\\\\0' ; } assert ( n == 3 ) ; while ( * p != '\\\\0' ) { assert ( n < MAX_HDR ) ; <S2SV_StartBug> if ( vct_iscrlf ( * p ) ) <S2SV_EndBug> break ; hh [ n ++ ] = p ++ ; <S2SV_StartBug> while ( * p != '\\\\0' && ! vct_iscrlf ( * p ) ) <S2SV_EndBug> p ++ ; q = p ; p += vct_skipcrlf ( p ) ; * q = '\\\\0' ; } p += vct_skipcrlf ( p ) ; assert ( * p == '\\\\0' ) ; for ( n = 0 ; n < 3 || hh [ n ] != NULL ; n ++ ) { sprintf ( buf , \"http[%2d]<S2SV_blank>\" , n ) ; vtc_dump ( hp -> vl , 4 , buf , hh [ n ] , - 1 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ! vct_iscrlf ( <S2SV_ModEnd> p ) ) <S2SV_ModStart> ! vct_iscrlf ( <S2SV_ModEnd> p ) ) <S2SV_ModStart> ( vct_iscrlf ( <S2SV_ModEnd> p ) ) <S2SV_ModStart> ! vct_iscrlf ( <S2SV_ModEnd> p ) ) <S2SV_ModStart> ( vct_iscrlf ( <S2SV_ModEnd> p ) ) <S2SV_ModStart> ! vct_iscrlf ( <S2SV_ModEnd> p ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9985\n\n```\nCWE-125 void snd_msndmidi_input_read ( void * mpuv ) { unsigned long flags ; struct snd_msndmidi * mpu = mpuv ; void * pwMIDQData = mpu -> dev -> mappedbase + MIDQ_DATA_BUFF ; <S2SV_StartBug> spin_lock_irqsave ( & mpu -> input_lock , flags ) ; <S2SV_EndBug> <S2SV_StartBug> while ( readw ( mpu -> dev -> MIDQ + JQS_wTail ) != <S2SV_EndBug> readw ( mpu -> dev -> MIDQ + JQS_wHead ) ) { u16 wTmp , val ; val = readw ( pwMIDQData + 2 * readw ( mpu -> dev -> MIDQ + JQS_wHead ) ) ; if ( test_bit ( MSNDMIDI_MODE_BIT_INPUT_TRIGGER , & mpu -> mode ) ) snd_rawmidi_receive ( mpu -> substream_input , ( unsigned char * ) & val , 1 ) ; <S2SV_StartBug> wTmp = readw ( mpu -> dev -> MIDQ + JQS_wHead ) + 1 ; <S2SV_EndBug> if ( wTmp > readw ( mpu -> dev -> MIDQ + JQS_wSize ) ) writew ( 0 , mpu -> dev -> MIDQ + JQS_wHead ) ; else writew ( wTmp , mpu -> dev -> MIDQ + JQS_wHead ) ; } spin_unlock_irqrestore ( & mpu -> input_lock , flags ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + MIDQ_DATA_BUFF ; u16 head , tail , size ; <S2SV_ModStart> flags ) ; head = readw ( mpu -> dev -> MIDQ + JQS_wHead ) ; tail = readw ( mpu -> dev -> MIDQ + JQS_wTail ) ; size = readw ( mpu -> dev -> MIDQ + JQS_wSize ) ; if ( head > size || tail > size ) goto out ; while ( head != tail ) { unsigned char val = readw ( pwMIDQData + 2 * head ) ; if ( test_bit ( MSNDMIDI_MODE_BIT_INPUT_TRIGGER , & mpu -> mode ) ) snd_rawmidi_receive ( mpu -> substream_input , & val <S2SV_ModEnd> , 1 ) <S2SV_ModStart> 1 ) ; if ( ++ head > size ) head = 0 ; writew ( head , <S2SV_ModEnd> mpu -> dev <S2SV_ModStart> + JQS_wHead ) ; } out : <S2SV_ModEnd> spin_unlock_irqrestore ( &\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3288\n\n```\nCWE-20 static int handle_pte_fault ( struct mm_struct * mm , struct vm_area_struct * vma , unsigned long address , pte_t * pte , pmd_t * pmd , unsigned int flags ) { pte_t entry ; spinlock_t * ptl ; entry = * pte ; barrier ( ) ; if ( ! pte_present ( entry ) ) { if ( pte_none ( entry ) ) { <S2SV_StartBug> if ( vma -> vm_ops ) { <S2SV_EndBug> if ( likely ( vma -> vm_ops -> fault ) ) return do_fault ( mm , vma , address , pte , <S2SV_StartBug> pmd , flags , entry ) ; <S2SV_EndBug> } return do_anonymous_page ( mm , vma , address , <S2SV_StartBug> pte , pmd , flags ) ; <S2SV_EndBug> } return do_swap_page ( mm , vma , address , pte , pmd , flags , entry ) ; } if ( pte_protnone ( entry ) ) return do_numa_page ( mm , vma , address , entry , pte , pmd ) ; ptl = pte_lockptr ( mm , pmd ) ; spin_lock ( ptl ) ; if ( unlikely ( ! pte_same ( * pte , entry ) ) ) goto unlock ; if ( flags & FAULT_FLAG_WRITE ) { if ( ! pte_write ( entry ) ) return do_wp_page ( mm , vma , address , pte , pmd , ptl , entry ) ; entry = pte_mkdirty ( entry ) ; } entry = pte_mkyoung ( entry ) ; if ( ptep_set_access_flags ( vma , address , pte , entry , flags & FAULT_FLAG_WRITE ) ) { update_mmu_cache ( vma , address , pte ) ; } else { if ( flags & FAULT_FLAG_WRITE ) flush_tlb_fix_spurious_fault ( vma , address ) ; } unlock : pte_unmap_unlock ( pte , ptl ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> vm_ops ) <S2SV_ModEnd> return do_fault ( <S2SV_ModStart> , pte , pmd , flags , entry ) ; <S2SV_ModEnd> return do_anonymous_page ( <S2SV_ModStart> , address , pte , pmd , <S2SV_ModEnd> flags ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13095\n\n```\nCWE-787 xfs_failaddr_t xfs_dinode_verify ( struct xfs_mount * mp , xfs_ino_t ino , struct xfs_dinode * dip ) { xfs_failaddr_t fa ; uint16_t mode ; uint16_t flags ; uint64_t flags2 ; uint64_t di_size ; if ( dip -> di_magic != cpu_to_be16 ( XFS_DINODE_MAGIC ) ) return __this_address ; if ( dip -> di_version >= 3 ) { if ( ! xfs_sb_version_hascrc ( & mp -> m_sb ) ) return __this_address ; if ( ! xfs_verify_cksum ( ( char * ) dip , mp -> m_sb . sb_inodesize , XFS_DINODE_CRC_OFF ) ) return __this_address ; if ( be64_to_cpu ( dip -> di_ino ) != ino ) return __this_address ; if ( ! uuid_equal ( & dip -> di_uuid , & mp -> m_sb . sb_meta_uuid ) ) return __this_address ; } di_size = be64_to_cpu ( dip -> di_size ) ; if ( di_size & ( 1ULL << 63 ) ) return __this_address ; mode = be16_to_cpu ( dip -> di_mode ) ; if ( mode && xfs_mode_to_ftype ( mode ) == XFS_DIR3_FT_UNKNOWN ) return __this_address ; if ( ( S_ISLNK ( mode ) || S_ISDIR ( mode ) ) && di_size == 0 ) return __this_address ; if ( mode && be32_to_cpu ( dip -> di_nextents ) + be16_to_cpu ( dip -> di_anextents ) > be64_to_cpu ( dip -> di_nblocks ) ) return __this_address ; if ( mode && XFS_DFORK_BOFF ( dip ) > mp -> m_sb . sb_inodesize ) return __this_address ; flags = be16_to_cpu ( dip -> di_flags ) ; if ( mode && ( flags & XFS_DIFLAG_REALTIME ) && ! mp -> m_rtdev_targp ) return __this_address ; switch ( mode & S_IFMT ) { case S_IFIFO : case S_IFCHR : case S_IFBLK : case S_IFSOCK : if ( dip -> di_format != XFS_DINODE_FMT_DEV ) return __this_address ; break ; case S_IFREG : case S_IFLNK : case S_IFDIR : <S2SV_StartBug> switch ( dip -> di_format ) { <S2SV_EndBug> case XFS_DINODE_FMT_LOCAL : if ( S_ISREG ( mode ) ) return __this_address ; if ( di_size > XFS_DFORK_DSIZE ( dip , mp ) ) return __this_address ; if ( dip -> di_nextents ) return __this_address ; case XFS_DINODE_FMT_EXTENTS : case XFS_DINODE_FMT_BTREE : break ; default : return __this_address ; } break ; case 0 : break ; default : return __this_address ; } if ( XFS_DFORK_Q ( dip ) ) { switch ( dip -> di_aformat ) { case XFS_DINODE_FMT_LOCAL : if ( dip -> di_anextents ) return __this_address ; case XFS_DINODE_FMT_EXTENTS : case XFS_DINODE_FMT_BTREE : break ; default : return __this_address ; } } else { switch ( dip -> di_aformat ) { case 0 : case XFS_DINODE_FMT_EXTENTS : break ; default : return __this_address ; } if ( dip -> di_anextents ) return __this_address ; } fa = xfs_inode_validate_extsize ( mp , be32_to_cpu ( dip -> di_extsize ) , mode , flags ) ; if ( fa ) return fa ; if ( dip -> di_version < 3 ) return NULL ; flags2 = be64_to_cpu ( dip -> di_flags2 ) ; if ( ( flags2 & ( XFS_DIFLAG2_REFLINK | XFS_DIFLAG2_COWEXTSIZE ) ) && ! xfs_sb_version_hasreflink ( & mp -> m_sb ) ) return __this_address ; if ( ( flags2 & XFS_DIFLAG2_REFLINK ) && ( mode & S_IFMT ) != S_IFREG ) return __this_address ; if ( ( flags2 & XFS_DIFLAG2_REFLINK ) && ( flags & XFS_DIFLAG_REALTIME ) ) return __this_address ; if ( ( flags2 & XFS_DIFLAG2_REFLINK ) && ( flags2 & XFS_DIFLAG2_DAX ) ) return __this_address ; fa = xfs_inode_validate_cowextsize ( mp , be32_to_cpu ( dip -> di_cowextsize ) , mode , flags , flags2 ) ; if ( fa ) return fa ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case S_IFDIR : fa = xfs_dinode_verify_fork ( dip , mp , XFS_DATA_FORK ) ; if ( fa ) return fa ; break ; case 0 : break ; default : return __this_address ; } if ( XFS_DFORK_Q ( dip ) ) { fa = xfs_dinode_verify_fork ( dip , mp , XFS_ATTR_FORK ) ; if ( fa ) return fa ; <S2SV_ModEnd> } else {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1000127\n\n```\nCWE-190 static inline void process_get_command ( conn * c , token_t * tokens , size_t ntokens , bool return_cas ) { char * key ; size_t nkey ; int i = 0 ; item * it ; token_t * key_token = & tokens [ KEY_TOKEN ] ; char * suffix ; assert ( c != NULL ) ; do { while ( key_token -> length != 0 ) { key = key_token -> value ; nkey = key_token -> length ; if ( nkey > KEY_MAX_LENGTH ) { out_string ( c , \"CLIENT_ERROR<S2SV_blank>bad<S2SV_blank>command<S2SV_blank>line<S2SV_blank>format\" ) ; while ( i -- > 0 ) { item_remove ( * ( c -> ilist + i ) ) ; } return ; } <S2SV_StartBug> it = item_get ( key , nkey , c , DO_UPDATE ) ; <S2SV_EndBug> if ( settings . detail_enabled ) { stats_prefix_record_get ( key , nkey , NULL != it ) ; } if ( it ) { if ( i >= c -> isize ) { item * * new_list = realloc ( c -> ilist , sizeof ( item * ) * c -> isize * 2 ) ; if ( new_list ) { c -> isize *= 2 ; c -> ilist = new_list ; } else { STATS_LOCK ( ) ; stats . malloc_fails ++ ; STATS_UNLOCK ( ) ; item_remove ( it ) ; break ; } } if ( return_cas || ! settings . inline_ascii_response ) { MEMCACHED_COMMAND_GET ( c -> sfd , ITEM_key ( it ) , it -> nkey , it -> nbytes , ITEM_get_cas ( it ) ) ; if ( i >= c -> suffixsize ) { char * * new_suffix_list = realloc ( c -> suffixlist , sizeof ( char * ) * c -> suffixsize * 2 ) ; if ( new_suffix_list ) { c -> suffixsize *= 2 ; c -> suffixlist = new_suffix_list ; } else { STATS_LOCK ( ) ; stats . malloc_fails ++ ; STATS_UNLOCK ( ) ; item_remove ( it ) ; break ; } } suffix = do_cache_alloc ( c -> thread -> suffix_cache ) ; if ( suffix == NULL ) { STATS_LOCK ( ) ; stats . malloc_fails ++ ; STATS_UNLOCK ( ) ; out_of_memory ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>making<S2SV_blank>CAS<S2SV_blank>suffix\" ) ; item_remove ( it ) ; while ( i -- > 0 ) { item_remove ( * ( c -> ilist + i ) ) ; } return ; } * ( c -> suffixlist + i ) = suffix ; int suffix_len = make_ascii_get_suffix ( suffix , it , return_cas ) ; if ( add_iov ( c , \"VALUE<S2SV_blank>\" , 6 ) != 0 || add_iov ( c , ITEM_key ( it ) , it -> nkey ) != 0 || ( settings . inline_ascii_response && add_iov ( c , ITEM_suffix ( it ) , it -> nsuffix - 2 ) != 0 ) || add_iov ( c , suffix , suffix_len ) != 0 ) { item_remove ( it ) ; break ; } if ( ( it -> it_flags & ITEM_CHUNKED ) == 0 ) { add_iov ( c , ITEM_data ( it ) , it -> nbytes ) ; } else if ( add_chunked_item_iovs ( c , it , it -> nbytes ) != 0 ) { item_remove ( it ) ; break ; } } else { MEMCACHED_COMMAND_GET ( c -> sfd , ITEM_key ( it ) , it -> nkey , it -> nbytes , ITEM_get_cas ( it ) ) ; if ( add_iov ( c , \"VALUE<S2SV_blank>\" , 6 ) != 0 || add_iov ( c , ITEM_key ( it ) , it -> nkey ) != 0 ) { item_remove ( it ) ; break ; } if ( ( it -> it_flags & ITEM_CHUNKED ) == 0 ) { if ( add_iov ( c , ITEM_suffix ( it ) , it -> nsuffix + it -> nbytes ) != 0 ) { item_remove ( it ) ; break ; } } else if ( add_iov ( c , ITEM_suffix ( it ) , it -> nsuffix ) != 0 || add_chunked_item_iovs ( c , it , it -> nbytes ) != 0 ) { item_remove ( it ) ; break ; } } if ( settings . verbose > 1 ) { int ii ; fprintf ( stderr , \">%d<S2SV_blank>sending<S2SV_blank>key<S2SV_blank>\" , c -> sfd ) ; for ( ii = 0 ; ii < it -> nkey ; ++ ii ) { fprintf ( stderr , \"%c\" , key [ ii ] ) ; } fprintf ( stderr , \"\\\\n\" ) ; } pthread_mutex_lock ( & c -> thread -> stats . mutex ) ; c -> thread -> stats . slab_stats [ ITEM_clsid ( it ) ] . get_hits ++ ; c -> thread -> stats . get_cmds ++ ; pthread_mutex_unlock ( & c -> thread -> stats . mutex ) ; * ( c -> ilist + i ) = it ; i ++ ; } else { pthread_mutex_lock ( & c -> thread -> stats . mutex ) ; c -> thread -> stats . get_misses ++ ; c -> thread -> stats . get_cmds ++ ; pthread_mutex_unlock ( & c -> thread -> stats . mutex ) ; MEMCACHED_COMMAND_GET ( c -> sfd , key , nkey , - 1 , 0 ) ; } key_token ++ ; } if ( key_token -> value != NULL ) { ntokens = tokenize_command ( key_token -> value , tokens , MAX_TOKENS ) ; key_token = tokens ; } } while ( key_token -> value != NULL ) ; c -> icurr = c -> ilist ; c -> ileft = i ; if ( return_cas || ! settings . inline_ascii_response ) { c -> suffixcurr = c -> suffixlist ; c -> suffixleft = i ; } if ( settings . verbose > 1 ) fprintf ( stderr , \">%d<S2SV_blank>END\\\\n\" , c -> sfd ) ; if ( key_token -> value != NULL || add_iov ( c , \"END\\\\r\\\\n\" , 5 ) != 0 || ( IS_UDP ( c -> transport ) && build_udp_headers ( c ) != 0 ) ) { out_of_memory ( c , \"SERVER_ERROR<S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank>writing<S2SV_blank>get<S2SV_blank>response\" ) ; } else { conn_set_state ( c , conn_mwrite ) ; c -> msgcurr = 0 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } it = limited_get <S2SV_ModEnd> ( key , <S2SV_ModStart> nkey , c <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7027\n\n```\nCWE-119 int ieee80211_radiotap_iterator_init ( struct ieee80211_radiotap_iterator * iterator , struct ieee80211_radiotap_header * radiotap_header , int max_length , const struct ieee80211_radiotap_vendor_namespaces * vns ) { <S2SV_StartBug> if ( radiotap_header -> it_version ) <S2SV_EndBug> return - EINVAL ; if ( max_length < get_unaligned_le16 ( & radiotap_header -> it_len ) ) return - EINVAL ; iterator -> _rtheader = radiotap_header ; iterator -> _max_length = get_unaligned_le16 ( & radiotap_header -> it_len ) ; iterator -> _arg_index = 0 ; iterator -> _bitmap_shifter = get_unaligned_le32 ( & radiotap_header -> it_present ) ; iterator -> _arg = ( uint8_t * ) radiotap_header + sizeof ( * radiotap_header ) ; iterator -> _reset_on_ext = 0 ; iterator -> _next_bitmap = & radiotap_header -> it_present ; iterator -> _next_bitmap ++ ; iterator -> _vns = vns ; iterator -> current_namespace = & radiotap_ns ; iterator -> is_radiotap_ns = 1 ; if ( iterator -> _bitmap_shifter & ( 1 << IEEE80211_RADIOTAP_EXT ) ) { while ( get_unaligned_le32 ( iterator -> _arg ) & ( 1 << IEEE80211_RADIOTAP_EXT ) ) { iterator -> _arg += sizeof ( uint32_t ) ; if ( ( unsigned long ) iterator -> _arg - <S2SV_StartBug> ( unsigned long ) iterator -> _rtheader > <S2SV_EndBug> ( unsigned long ) iterator -> _max_length ) return - EINVAL ; } iterator -> _arg += sizeof ( uint32_t ) ; } iterator -> this_arg = iterator -> _arg ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( max_length < sizeof ( struct ieee80211_radiotap_header ) ) return - EINVAL ; if ( <S2SV_ModStart> iterator -> _rtheader + sizeof ( uint32_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0349\n\n```\nCWE-200 static int hidp_setup_hid ( struct hidp_session * session , struct hidp_connadd_req * req ) { struct hid_device * hid ; int err ; session -> rd_data = kzalloc ( req -> rd_size , GFP_KERNEL ) ; if ( ! session -> rd_data ) return - ENOMEM ; if ( copy_from_user ( session -> rd_data , req -> rd_data , req -> rd_size ) ) { err = - EFAULT ; goto fault ; } session -> rd_size = req -> rd_size ; hid = hid_allocate_device ( ) ; if ( IS_ERR ( hid ) ) { err = PTR_ERR ( hid ) ; goto fault ; } session -> hid = hid ; hid -> driver_data = session ; hid -> bus = BUS_BLUETOOTH ; hid -> vendor = req -> vendor ; hid -> product = req -> product ; hid -> version = req -> version ; hid -> country = req -> country ; <S2SV_StartBug> strncpy ( hid -> name , req -> name , 128 ) ; <S2SV_EndBug> snprintf ( hid -> phys , sizeof ( hid -> phys ) , \"%pMR\" , & bt_sk ( session -> ctrl_sock -> sk ) -> src ) ; snprintf ( hid -> uniq , sizeof ( hid -> uniq ) , \"%pMR\" , & bt_sk ( session -> ctrl_sock -> sk ) -> dst ) ; hid -> dev . parent = & session -> conn -> dev ; hid -> ll_driver = & hidp_hid_driver ; hid -> hid_get_raw_report = hidp_get_raw_report ; hid -> hid_output_raw_report = hidp_output_raw_report ; if ( hid_ignore ( hid ) ) { hid_destroy_device ( session -> hid ) ; session -> hid = NULL ; return - ENODEV ; } return 0 ; fault : kfree ( session -> rd_data ) ; session -> rd_data = NULL ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> name , sizeof ( req -> name ) - 1 <S2SV_ModEnd> ) ; snprintf\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3841\n\n```\nCWE-416 static int __ip6_datagram_connect ( struct sock * sk , struct sockaddr * uaddr , int addr_len ) { struct sockaddr_in6 * usin = ( struct sockaddr_in6 * ) uaddr ; struct inet_sock * inet = inet_sk ( sk ) ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct in6_addr * daddr , * final_p , final ; struct dst_entry * dst ; struct flowi6 fl6 ; struct ip6_flowlabel * flowlabel = NULL ; struct ipv6_txoptions * opt ; int addr_type ; int err ; if ( usin -> sin6_family == AF_INET ) { if ( __ipv6_only_sock ( sk ) ) return - EAFNOSUPPORT ; err = __ip4_datagram_connect ( sk , uaddr , addr_len ) ; goto ipv4_connected ; } if ( addr_len < SIN6_LEN_RFC2133 ) return - EINVAL ; if ( usin -> sin6_family != AF_INET6 ) return - EAFNOSUPPORT ; memset ( & fl6 , 0 , sizeof ( fl6 ) ) ; if ( np -> sndflow ) { fl6 . flowlabel = usin -> sin6_flowinfo & IPV6_FLOWINFO_MASK ; if ( fl6 . flowlabel & IPV6_FLOWLABEL_MASK ) { flowlabel = fl6_sock_lookup ( sk , fl6 . flowlabel ) ; if ( ! flowlabel ) return - EINVAL ; } } addr_type = ipv6_addr_type ( & usin -> sin6_addr ) ; if ( addr_type == IPV6_ADDR_ANY ) { usin -> sin6_addr . s6_addr [ 15 ] = 0x01 ; } daddr = & usin -> sin6_addr ; if ( addr_type == IPV6_ADDR_MAPPED ) { struct sockaddr_in sin ; if ( __ipv6_only_sock ( sk ) ) { err = - ENETUNREACH ; goto out ; } sin . sin_family = AF_INET ; sin . sin_addr . s_addr = daddr -> s6_addr32 [ 3 ] ; sin . sin_port = usin -> sin6_port ; err = __ip4_datagram_connect ( sk , ( struct sockaddr * ) & sin , sizeof ( sin ) ) ; ipv4_connected : if ( err ) goto out ; ipv6_addr_set_v4mapped ( inet -> inet_daddr , & sk -> sk_v6_daddr ) ; if ( ipv6_addr_any ( & np -> saddr ) || ipv6_mapped_addr_any ( & np -> saddr ) ) ipv6_addr_set_v4mapped ( inet -> inet_saddr , & np -> saddr ) ; if ( ipv6_addr_any ( & sk -> sk_v6_rcv_saddr ) || ipv6_mapped_addr_any ( & sk -> sk_v6_rcv_saddr ) ) { ipv6_addr_set_v4mapped ( inet -> inet_rcv_saddr , & sk -> sk_v6_rcv_saddr ) ; if ( sk -> sk_prot -> rehash ) sk -> sk_prot -> rehash ( sk ) ; } goto out ; } if ( __ipv6_addr_needs_scope_id ( addr_type ) ) { if ( addr_len >= sizeof ( struct sockaddr_in6 ) && usin -> sin6_scope_id ) { if ( sk -> sk_bound_dev_if && sk -> sk_bound_dev_if != usin -> sin6_scope_id ) { err = - EINVAL ; goto out ; } sk -> sk_bound_dev_if = usin -> sin6_scope_id ; } if ( ! sk -> sk_bound_dev_if && ( addr_type & IPV6_ADDR_MULTICAST ) ) sk -> sk_bound_dev_if = np -> mcast_oif ; if ( ! sk -> sk_bound_dev_if ) { err = - EINVAL ; goto out ; } } sk -> sk_v6_daddr = * daddr ; np -> flow_label = fl6 . flowlabel ; inet -> inet_dport = usin -> sin6_port ; fl6 . flowi6_proto = sk -> sk_protocol ; fl6 . daddr = sk -> sk_v6_daddr ; fl6 . saddr = np -> saddr ; fl6 . flowi6_oif = sk -> sk_bound_dev_if ; fl6 . flowi6_mark = sk -> sk_mark ; fl6 . fl6_dport = inet -> inet_dport ; fl6 . fl6_sport = inet -> inet_sport ; if ( ! fl6 . flowi6_oif && ( addr_type & IPV6_ADDR_MULTICAST ) ) fl6 . flowi6_oif = np -> mcast_oif ; security_sk_classify_flow ( sk , flowi6_to_flowi ( & fl6 ) ) ; <S2SV_StartBug> opt = flowlabel ? flowlabel -> opt : np -> opt ; <S2SV_EndBug> <S2SV_StartBug> final_p = fl6_update_dst ( & fl6 , opt , & final ) ; <S2SV_EndBug> dst = ip6_dst_lookup_flow ( sk , & fl6 , final_p ) ; err = 0 ; if ( IS_ERR ( dst ) ) { err = PTR_ERR ( dst ) ; goto out ; } if ( ipv6_addr_any ( & np -> saddr ) ) np -> saddr = fl6 . saddr ; if ( ipv6_addr_any ( & sk -> sk_v6_rcv_saddr ) ) { sk -> sk_v6_rcv_saddr = fl6 . saddr ; inet -> inet_rcv_saddr = LOOPBACK4_IPV6 ; if ( sk -> sk_prot -> rehash ) sk -> sk_prot -> rehash ( sk ) ; } ip6_dst_store ( sk , dst , ipv6_addr_equal ( & fl6 . daddr , & sk -> sk_v6_daddr ) ? & sk -> sk_v6_daddr : NULL , # ifdef CONFIG_IPV6_SUBTREES ipv6_addr_equal ( & fl6 . saddr , & np -> saddr ) ? & np -> saddr : # endif NULL ) ; sk -> sk_state = TCP_ESTABLISHED ; sk_set_txhash ( sk ) ; out : fl6_sock_release ( flowlabel ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; rcu_read_lock ( ) ; <S2SV_ModStart> -> opt : rcu_dereference ( <S2SV_ModStart> np -> opt ) <S2SV_ModStart> , & final ) ; rcu_read_unlock (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 <S2SV_StartBug> jas_matrix_t * jas_matrix_create ( int numrows , int numcols ) <S2SV_EndBug> { jas_matrix_t * matrix ; <S2SV_StartBug> int i ; <S2SV_EndBug> size_t size ; matrix = 0 ; if ( numrows < 0 || numcols < 0 ) { goto error ; } if ( ! ( matrix = jas_malloc ( sizeof ( jas_matrix_t ) ) ) ) { goto error ; } matrix -> flags_ = 0 ; matrix -> numrows_ = numrows ; matrix -> numcols_ = numcols ; matrix -> rows_ = 0 ; matrix -> maxrows_ = numrows ; matrix -> data_ = 0 ; matrix -> datasize_ = 0 ; if ( ! jas_safe_size_mul ( numrows , numcols , & size ) ) { goto error ; } matrix -> datasize_ = size ; if ( matrix -> maxrows_ > 0 ) { if ( ! ( matrix -> rows_ = jas_alloc2 ( matrix -> maxrows_ , sizeof ( jas_seqent_t * ) ) ) ) { goto error ; } } if ( matrix -> datasize_ > 0 ) { if ( ! ( matrix -> data_ = jas_alloc2 ( matrix -> datasize_ , sizeof ( jas_seqent_t ) ) ) ) { goto error ; } } for ( i = 0 ; i < numrows ; ++ i ) { matrix -> rows_ [ i ] = & matrix -> data_ [ i * matrix -> numcols_ ] ; } for ( i = 0 ; i < matrix -> datasize_ ; ++ i ) { matrix -> data_ [ i ] = 0 ; } matrix -> xstart_ = 0 ; matrix -> ystart_ = 0 ; matrix -> xend_ = matrix -> numcols_ ; matrix -> yend_ = matrix -> numrows_ ; return matrix ; error : if ( matrix ) { jas_matrix_destroy ( matrix ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * jas_matrix_create ( jas_matind_t numrows , jas_matind_t <S2SV_ModEnd> numcols ) { <S2SV_ModStart> * matrix ; jas_matind_t <S2SV_ModEnd> i ; size_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-4508\n\n```\nCWE-362 static int ext4_convert_unwritten_extents_endio ( handle_t * handle , struct inode * inode , <S2SV_StartBug> struct ext4_ext_path * path ) <S2SV_EndBug> { <S2SV_StartBug> struct ext4_extent * ex ; <S2SV_EndBug> int depth ; int err = 0 ; depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; <S2SV_StartBug> ext_debug ( \"ext4_convert_unwritten_extents_endio:<S2SV_blank>inode<S2SV_blank>%lu,<S2SV_blank>logical\" <S2SV_EndBug> \"block<S2SV_blank>%llu,<S2SV_blank>max_blocks<S2SV_blank>%u\\\\n\" , inode -> i_ino , <S2SV_StartBug> ( unsigned long long ) le32_to_cpu ( ex -> ee_block ) , <S2SV_EndBug> ext4_ext_get_actual_len ( ex ) ) ; err = ext4_ext_get_access ( handle , inode , path + depth ) ; if ( err ) goto out ; ext4_ext_mark_initialized ( ex ) ; ext4_ext_try_to_merge ( handle , inode , path , ex ) ; err = ext4_ext_dirty ( handle , inode , path + path -> p_depth ) ; out : ext4_ext_show_leaf ( inode , path ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> inode , struct ext4_map_blocks * map , struct <S2SV_ModStart> ext4_extent * ex ; ext4_lblk_t ee_block ; unsigned int ee_len <S2SV_ModStart> . p_ext ; ee_block = le32_to_cpu ( ex -> ee_block ) ; ee_len = ext4_ext_get_actual_len ( ex ) ; <S2SV_ModStart> long long ) ee_block , ee_len ) ; if ( ee_block != map -> m_lblk || ee_len > map -> m_len ) { err = ext4_split_unwritten_extents ( handle , inode , map , path , EXT4_GET_BLOCKS_CONVERT ) ; if ( err < 0 ) goto out ; ext4_ext_drop_refs ( path ) ; path = ext4_ext_find_extent ( inode , map -> m_lblk , path ) ; if ( IS_ERR ( path ) ) { err = PTR_ERR ( path ) ; goto out ; } depth = ext_depth ( inode ) ; ex = path [ depth ] . p_ext ; } <S2SV_ModEnd> err = ext4_ext_get_access\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7253\n\n```\nCWE-125 int ParseDsdiffHeaderConfig ( FILE * infile , char * infilename , char * fourcc , WavpackContext * wpc , WavpackConfig * config ) { int64_t infilesize , total_samples ; DFFFileHeader dff_file_header ; DFFChunkHeader dff_chunk_header ; uint32_t bcount ; infilesize = DoGetFileSize ( infile ) ; memcpy ( & dff_file_header , fourcc , 4 ) ; if ( ( ! DoReadFile ( infile , ( ( char * ) & dff_file_header ) + 4 , sizeof ( DFFFileHeader ) - 4 , & bcount ) || bcount != sizeof ( DFFFileHeader ) - 4 ) || strncmp ( dff_file_header . formType , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_file_header , sizeof ( DFFFileHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } # if 1 WavpackBigEndianToNative ( & dff_file_header , DFFFileHeaderFormat ) ; if ( infilesize && ! ( config -> qmode & QMODE_IGNORE_LENGTH ) && dff_file_header . ckDataSize && dff_file_header . ckDataSize + 1 && dff_file_header . ckDataSize + 12 != infilesize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file<S2SV_blank>(by<S2SV_blank>total<S2SV_blank>size)!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"file<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_file_header . ckDataSize ) ; # endif while ( 1 ) { if ( ! DoReadFile ( infile , & dff_chunk_header , sizeof ( DFFChunkHeader ) , & bcount ) || bcount != sizeof ( DFFChunkHeader ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & dff_chunk_header , sizeof ( DFFChunkHeader ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( debug_logging_mode ) error_line ( \"chunk<S2SV_blank>header<S2SV_blank>indicated<S2SV_blank>length<S2SV_blank>=<S2SV_blank>%lld\" , dff_chunk_header . ckDataSize ) ; if ( ! strncmp ( dff_chunk_header . ckID , \"FVER\" , 4 ) ) { uint32_t version ; if ( dff_chunk_header . ckDataSize != sizeof ( version ) || ! DoReadFile ( infile , & version , sizeof ( version ) , & bcount ) || bcount != sizeof ( version ) ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , & version , sizeof ( version ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } WavpackBigEndianToNative ( & version , \"L\" ) ; if ( debug_logging_mode ) error_line ( \"dsdiff<S2SV_blank>file<S2SV_blank>version<S2SV_blank>=<S2SV_blank>0x%08x\" , version ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"PROP\" , 4 ) ) { <S2SV_StartBug> char * prop_chunk = malloc ( ( size_t ) dff_chunk_header . ckDataSize ) ; <S2SV_EndBug> if ( ! DoReadFile ( infile , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize , & bcount ) || bcount != dff_chunk_header . ckDataSize ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , prop_chunk , ( uint32_t ) dff_chunk_header . ckDataSize ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } if ( ! strncmp ( prop_chunk , \"SND<S2SV_blank>\" , 4 ) ) { char * cptr = prop_chunk + 4 , * eptr = prop_chunk + dff_chunk_header . ckDataSize ; uint16_t numChannels , chansSpecified , chanMask = 0 ; uint32_t sampleRate ; while ( eptr - cptr >= sizeof ( dff_chunk_header ) ) { memcpy ( & dff_chunk_header , cptr , sizeof ( dff_chunk_header ) ) ; cptr += sizeof ( dff_chunk_header ) ; WavpackBigEndianToNative ( & dff_chunk_header , DFFChunkHeaderFormat ) ; if ( eptr - cptr >= dff_chunk_header . ckDataSize ) { if ( ! strncmp ( dff_chunk_header . ckID , \"FS<S2SV_blank><S2SV_blank>\" , 4 ) && dff_chunk_header . ckDataSize == 4 ) { memcpy ( & sampleRate , cptr , sizeof ( sampleRate ) ) ; WavpackBigEndianToNative ( & sampleRate , \"L\" ) ; cptr += dff_chunk_header . ckDataSize ; if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>sample<S2SV_blank>rate<S2SV_blank>of<S2SV_blank>%u<S2SV_blank>Hz\" , sampleRate ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CHNL\" , 4 ) && dff_chunk_header . ckDataSize >= 2 ) { memcpy ( & numChannels , cptr , sizeof ( numChannels ) ) ; WavpackBigEndianToNative ( & numChannels , \"S\" ) ; cptr += sizeof ( numChannels ) ; chansSpecified = ( int ) ( dff_chunk_header . ckDataSize - sizeof ( numChannels ) ) / 4 ; while ( chansSpecified -- ) { if ( ! strncmp ( cptr , \"SLFT\" , 4 ) || ! strncmp ( cptr , \"MLFT\" , 4 ) ) chanMask |= 0x1 ; else if ( ! strncmp ( cptr , \"SRGT\" , 4 ) || ! strncmp ( cptr , \"MRGT\" , 4 ) ) chanMask |= 0x2 ; else if ( ! strncmp ( cptr , \"LS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x10 ; else if ( ! strncmp ( cptr , \"RS<S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x20 ; else if ( ! strncmp ( cptr , \"C<S2SV_blank><S2SV_blank><S2SV_blank>\" , 4 ) ) chanMask |= 0x4 ; else if ( ! strncmp ( cptr , \"LFE<S2SV_blank>\" , 4 ) ) chanMask |= 0x8 ; else if ( debug_logging_mode ) error_line ( \"undefined<S2SV_blank>channel<S2SV_blank>ID<S2SV_blank>%c%c%c%c\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; cptr += 4 ; } if ( debug_logging_mode ) error_line ( \"%d<S2SV_blank>channels,<S2SV_blank>mask<S2SV_blank>=<S2SV_blank>0x%08x\" , numChannels , chanMask ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"CMPR\" , 4 ) && dff_chunk_header . ckDataSize >= 4 ) { if ( strncmp ( cptr , \"DSD<S2SV_blank>\" , 4 ) ) { error_line ( \"DSDIFF<S2SV_blank>files<S2SV_blank>must<S2SV_blank>be<S2SV_blank>uncompressed,<S2SV_blank>not<S2SV_blank>\\\\\"%c%c%c%c\\\\\"!\" , cptr [ 0 ] , cptr [ 1 ] , cptr [ 2 ] , cptr [ 3 ] ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } cptr += dff_chunk_header . ckDataSize ; } else { if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP/SND<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; cptr += dff_chunk_header . ckDataSize ; } } else { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } } if ( chanMask && ( config -> channel_mask || ( config -> qmode & QMODE_CHANS_UNASSIGNED ) ) ) { error_line ( \"this<S2SV_blank>DSDIFF<S2SV_blank>file<S2SV_blank>already<S2SV_blank>has<S2SV_blank>channel<S2SV_blank>order<S2SV_blank>information!\" ) ; free ( prop_chunk ) ; return WAVPACK_SOFT_ERROR ; } else if ( chanMask ) config -> channel_mask = chanMask ; config -> bits_per_sample = 8 ; config -> bytes_per_sample = 1 ; config -> num_channels = numChannels ; config -> sample_rate = sampleRate / 8 ; config -> qmode |= QMODE_DSD_MSB_FIRST ; } else if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>unknown<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>type<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , prop_chunk [ 0 ] , prop_chunk [ 1 ] , prop_chunk [ 2 ] , prop_chunk [ 3 ] , dff_chunk_header . ckDataSize ) ; free ( prop_chunk ) ; } else if ( ! strncmp ( dff_chunk_header . ckID , \"DSD<S2SV_blank>\" , 4 ) ) { total_samples = dff_chunk_header . ckDataSize / config -> num_channels ; break ; } else { int bytes_to_copy = ( int ) ( ( ( dff_chunk_header . ckDataSize ) + 1 ) & ~ ( int64_t ) 1 ) ; char * buff = malloc ( bytes_to_copy ) ; if ( debug_logging_mode ) error_line ( \"extra<S2SV_blank>unknown<S2SV_blank>chunk<S2SV_blank>\\\\\"%c%c%c%c\\\\\"<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes\" , dff_chunk_header . ckID [ 0 ] , dff_chunk_header . ckID [ 1 ] , dff_chunk_header . ckID [ 2 ] , dff_chunk_header . ckID [ 3 ] , dff_chunk_header . ckDataSize ) ; if ( ! DoReadFile ( infile , buff , bytes_to_copy , & bcount ) || bcount != bytes_to_copy || ( ! ( config -> qmode & QMODE_NO_STORE_WRAPPER ) && ! WavpackAddWrapper ( wpc , buff , bytes_to_copy ) ) ) { error_line ( \"%s\" , WavpackGetErrorMessage ( wpc ) ) ; free ( buff ) ; return WAVPACK_SOFT_ERROR ; } free ( buff ) ; } } if ( debug_logging_mode ) error_line ( \"setting<S2SV_blank>configuration<S2SV_blank>with<S2SV_blank>%lld<S2SV_blank>samples\" , total_samples ) ; if ( ! WavpackSetConfiguration64 ( wpc , config , total_samples , NULL ) ) { error_line ( \"%s:<S2SV_blank>%s\" , infilename , WavpackGetErrorMessage ( wpc ) ) ; return WAVPACK_SOFT_ERROR ; } return WAVPACK_NO_ERROR ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { char * prop_chunk ; if ( dff_chunk_header . ckDataSize < 4 || dff_chunk_header . ckDataSize > 1024 ) { error_line ( \"%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>valid<S2SV_blank>.DFF<S2SV_blank>file!\" , infilename ) ; return WAVPACK_SOFT_ERROR ; } if ( debug_logging_mode ) error_line ( \"got<S2SV_blank>PROP<S2SV_blank>chunk<S2SV_blank>of<S2SV_blank>%d<S2SV_blank>bytes<S2SV_blank>total\" , ( int ) dff_chunk_header . ckDataSize ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7281\n\n```\nCWE-200 int ping_recvmsg ( struct kiocb * iocb , struct sock * sk , struct msghdr * msg , size_t len , int noblock , int flags , int * addr_len ) { struct inet_sock * isk = inet_sk ( sk ) ; <S2SV_StartBug> int family = sk -> sk_family ; <S2SV_EndBug> struct sockaddr_in * sin ; struct sockaddr_in6 * sin6 ; struct sk_buff * skb ; int copied , err ; pr_debug ( \"ping_recvmsg(sk=%p,sk->num=%u)\\\\n\" , isk , isk -> inet_num ) ; err = - EOPNOTSUPP ; if ( flags & MSG_OOB ) goto out ; <S2SV_StartBug> if ( addr_len ) { <S2SV_EndBug> if ( family == AF_INET ) * addr_len = sizeof ( * sin ) ; else if ( family == AF_INET6 && addr_len ) * addr_len = sizeof ( * sin6 ) ; } if ( flags & MSG_ERRQUEUE ) { if ( family == AF_INET ) { return ip_recv_error ( sk , msg , len ) ; # if IS_ENABLED ( CONFIG_IPV6 ) } else if ( family == AF_INET6 ) { return pingv6_ops . ipv6_recv_error ( sk , msg , len ) ; # endif } } skb = skb_recv_datagram ( sk , flags , noblock , & err ) ; if ( ! skb ) goto out ; copied = skb -> len ; if ( copied > len ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } err = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; if ( err ) goto done ; sock_recv_timestamp ( msg , sk , skb ) ; if ( family == AF_INET ) { <S2SV_StartBug> sin = ( struct sockaddr_in * ) msg -> msg_name ; <S2SV_EndBug> sin -> sin_family = AF_INET ; sin -> sin_port = 0 ; sin -> sin_addr . s_addr = ip_hdr ( skb ) -> saddr ; memset ( sin -> sin_zero , 0 , sizeof ( sin -> sin_zero ) ) ; <S2SV_StartBug> if ( isk -> cmsg_flags ) <S2SV_EndBug> ip_cmsg_recv ( msg , skb ) ; # if IS_ENABLED ( CONFIG_IPV6 ) } else if ( family == AF_INET6 ) { struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct ipv6hdr * ip6 = ipv6_hdr ( skb ) ; <S2SV_StartBug> sin6 = ( struct sockaddr_in6 * ) msg -> msg_name ; <S2SV_EndBug> sin6 -> sin6_family = AF_INET6 ; sin6 -> sin6_port = 0 ; sin6 -> sin6_addr = ip6 -> saddr ; sin6 -> sin6_flowinfo = 0 ; if ( np -> sndflow ) sin6 -> sin6_flowinfo = ip6_flowinfo ( ip6 ) ; sin6 -> sin6_scope_id = ipv6_iface_scope_id ( & sin6 -> sin6_addr , <S2SV_StartBug> IP6CB ( skb ) -> iif ) ; <S2SV_EndBug> if ( inet6_sk ( sk ) -> rxopt . all ) pingv6_ops . ip6_datagram_recv_ctl ( sk , msg , skb ) ; # endif } else { BUG ( ) ; } err = copied ; done : skb_free_datagram ( sk , skb ) ; out : pr_debug ( \"ping_recvmsg<S2SV_blank>-><S2SV_blank>%d\\\\n\" , err ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sk -> sk_family <S2SV_ModEnd> ; struct sk_buff <S2SV_ModStart> goto out ; <S2SV_ModEnd> if ( flags <S2SV_ModStart> AF_INET ) { struct sockaddr_in * <S2SV_ModStart> ) ) ; * addr_len = sizeof ( * sin ) ; <S2SV_ModStart> skb ) ; <S2SV_ModEnd> struct sockaddr_in6 * <S2SV_ModStart> struct sockaddr_in6 * sin6 = ( struct sockaddr_in6 * <S2SV_ModStart> ) -> iif ) ; * addr_len = sizeof ( * sin6\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3137\n\n```\nCWE-000 static int cypress_open ( struct tty_struct * tty , struct usb_serial_port * port ) { struct cypress_private * priv = usb_get_serial_port_data ( port ) ; struct usb_serial * serial = port -> serial ; unsigned long flags ; int result = 0 ; if ( ! priv -> comm_is_ok ) return - EIO ; usb_clear_halt ( serial -> dev , 0x81 ) ; usb_clear_halt ( serial -> dev , 0x02 ) ; spin_lock_irqsave ( & priv -> lock , flags ) ; priv -> bytes_in = 0 ; priv -> bytes_out = 0 ; priv -> cmd_count = 0 ; priv -> rx_flags = 0 ; spin_unlock_irqrestore ( & priv -> lock , flags ) ; cypress_send ( port ) ; if ( tty ) cypress_set_termios ( tty , port , & priv -> tmp_termios ) ; <S2SV_StartBug> if ( ! port -> interrupt_in_urb ) { <S2SV_EndBug> dev_err ( & port -> dev , \"%s<S2SV_blank>-<S2SV_blank>interrupt_in_urb<S2SV_blank>is<S2SV_blank>empty!\\\\n\" , __func__ ) ; return - 1 ; } usb_fill_int_urb ( port -> interrupt_in_urb , serial -> dev , usb_rcvintpipe ( serial -> dev , port -> interrupt_in_endpointAddress ) , port -> interrupt_in_urb -> transfer_buffer , port -> interrupt_in_urb -> transfer_buffer_length , cypress_read_int_callback , port , priv -> read_urb_interval ) ; result = usb_submit_urb ( port -> interrupt_in_urb , GFP_KERNEL ) ; if ( result ) { dev_err ( & port -> dev , \"%s<S2SV_blank>-<S2SV_blank>failed<S2SV_blank>submitting<S2SV_blank>read<S2SV_blank>urb,<S2SV_blank>error<S2SV_blank>%d\\\\n\" , __func__ , result ) ; cypress_set_dead ( port ) ; } return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> tmp_termios ) ; <S2SV_ModEnd> usb_fill_int_urb ( port\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8655\n\n```\nCWE-362 static int packet_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; struct packet_sock * po = pkt_sk ( sk ) ; int ret ; if ( level != SOL_PACKET ) return - ENOPROTOOPT ; switch ( optname ) { case PACKET_ADD_MEMBERSHIP : case PACKET_DROP_MEMBERSHIP : { struct packet_mreq_max mreq ; int len = optlen ; memset ( & mreq , 0 , sizeof ( mreq ) ) ; if ( len < sizeof ( struct packet_mreq ) ) return - EINVAL ; if ( len > sizeof ( mreq ) ) len = sizeof ( mreq ) ; if ( copy_from_user ( & mreq , optval , len ) ) return - EFAULT ; if ( len < ( mreq . mr_alen + offsetof ( struct packet_mreq , mr_address ) ) ) return - EINVAL ; if ( optname == PACKET_ADD_MEMBERSHIP ) ret = packet_mc_add ( sk , & mreq ) ; else ret = packet_mc_drop ( sk , & mreq ) ; return ret ; } case PACKET_RX_RING : case PACKET_TX_RING : { union tpacket_req_u req_u ; int len ; switch ( po -> tp_version ) { case TPACKET_V1 : case TPACKET_V2 : len = sizeof ( req_u . req ) ; break ; case TPACKET_V3 : default : len = sizeof ( req_u . req3 ) ; break ; } if ( optlen < len ) return - EINVAL ; if ( copy_from_user ( & req_u . req , optval , len ) ) return - EFAULT ; return packet_set_ring ( sk , & req_u , 0 , optname == PACKET_TX_RING ) ; } case PACKET_COPY_THRESH : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; pkt_sk ( sk ) -> copy_thresh = val ; return 0 ; } case PACKET_VERSION : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; <S2SV_StartBug> if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) <S2SV_EndBug> <S2SV_StartBug> return - EBUSY ; <S2SV_EndBug> <S2SV_StartBug> if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) <S2SV_EndBug> return - EFAULT ; switch ( val ) { case TPACKET_V1 : case TPACKET_V2 : case TPACKET_V3 : po -> tp_version = val ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> default : return - EINVAL ; } } case PACKET_RESERVE : { unsigned int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) return - EBUSY ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> tp_reserve = val ; return 0 ; } case PACKET_LOSS : { unsigned int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) return - EBUSY ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> tp_loss = ! ! val ; return 0 ; } case PACKET_AUXDATA : { int val ; if ( optlen < sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> auxdata = ! ! val ; return 0 ; } case PACKET_ORIGDEV : { int val ; if ( optlen < sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> origdev = ! ! val ; return 0 ; } case PACKET_VNET_HDR : { int val ; if ( sock -> type != SOCK_RAW ) return - EINVAL ; if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) return - EBUSY ; if ( optlen < sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> has_vnet_hdr = ! ! val ; return 0 ; } case PACKET_TIMESTAMP : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> tp_tstamp = val ; return 0 ; } case PACKET_FANOUT : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; return fanout_add ( sk , val & 0xffff , val >> 16 ) ; } case PACKET_FANOUT_DATA : { if ( ! po -> fanout ) return - EINVAL ; return fanout_set_data ( po , optval , optlen ) ; } case PACKET_TX_HAS_OFF : { unsigned int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) return - EBUSY ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> tp_tx_has_off = ! ! val ; return 0 ; } case PACKET_QDISC_BYPASS : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> xmit = val ? packet_direct_xmit : dev_queue_xmit ; return 0 ; } default : return - ENOPROTOOPT ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; switch ( val ) { case TPACKET_V1 : case TPACKET_V2 : case TPACKET_V3 : break ; default : return - EINVAL ; } lock_sock ( sk ) ; if ( <S2SV_ModStart> . pg_vec ) { ret = <S2SV_ModEnd> - EBUSY ; <S2SV_ModStart> - EBUSY ; } else { <S2SV_ModEnd> po -> tp_version <S2SV_ModStart> = val ; ret = 0 ; } release_sock ( sk ) ; return ret ; <S2SV_ModEnd> } case PACKET_RESERVE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5356\n\n```\nCWE-119 static gboolean cosine_seek_read ( wtap * wth , gint64 seek_off , struct wtap_pkthdr * phdr , Buffer * buf , int * err , gchar * * err_info ) { <S2SV_StartBug> int pkt_len ; <S2SV_EndBug> char line [ COSINE_LINE_LENGTH ] ; if ( file_seek ( wth -> random_fh , seek_off , SEEK_SET , err ) == - 1 ) return FALSE ; if ( file_gets ( line , COSINE_LINE_LENGTH , wth -> random_fh ) == NULL ) { * err = file_error ( wth -> random_fh , err_info ) ; if ( * err == 0 ) { * err = WTAP_ERR_SHORT_READ ; } return FALSE ; } <S2SV_StartBug> pkt_len = parse_cosine_rec_hdr ( phdr , line , err , err_info ) ; <S2SV_EndBug> if ( pkt_len == - 1 ) return FALSE ; <S2SV_StartBug> return parse_cosine_hex_dump ( wth -> random_fh , phdr , pkt_len , buf , err , <S2SV_EndBug> err_info ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> err_info ) { <S2SV_ModEnd> char line [ <S2SV_ModStart> FALSE ; } return parse_cosine_packet <S2SV_ModEnd> ( wth -> <S2SV_ModStart> , phdr , buf , line <S2SV_ModEnd> , err ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-5827\n\n```\nCWE-190 SQLITE_PRIVATE int sqlite3VtabEponymousTableInit ( Parse * pParse , Module * pMod ) { const sqlite3_module * pModule = pMod -> pModule ; Table * pTab ; char * zErr = 0 ; int rc ; sqlite3 * db = pParse -> db ; if ( pMod -> pEpoTab ) return 1 ; if ( pModule -> xCreate != 0 && pModule -> xCreate != pModule -> xConnect ) return 0 ; pTab = sqlite3DbMallocZero ( db , sizeof ( Table ) ) ; if ( pTab == 0 ) return 0 ; pTab -> zName = sqlite3DbStrDup ( db , pMod -> zName ) ; if ( pTab -> zName == 0 ) { sqlite3DbFree ( db , pTab ) ; return 0 ; } pMod -> pEpoTab = pTab ; pTab -> nTabRef = 1 ; pTab -> pSchema = db -> aDb [ 0 ] . pSchema ; assert ( pTab -> nModuleArg == 0 ) ; pTab -> iPKey = - 1 ; <S2SV_StartBug> addModuleArgument ( db , pTab , sqlite3DbStrDup ( db , pTab -> zName ) ) ; <S2SV_EndBug> <S2SV_StartBug> addModuleArgument ( db , pTab , 0 ) ; <S2SV_EndBug> <S2SV_StartBug> addModuleArgument ( db , pTab , sqlite3DbStrDup ( db , pTab -> zName ) ) ; <S2SV_EndBug> rc = vtabCallConstructor ( db , pTab , pMod , pModule -> xConnect , & zErr ) ; if ( rc ) { sqlite3ErrorMsg ( pParse , \"%s\" , zErr ) ; sqlite3DbFree ( db , zErr ) ; sqlite3VtabEponymousTableClear ( db , pMod ) ; return 0 ; } return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; addModuleArgument ( pParse <S2SV_ModEnd> , pTab , <S2SV_ModStart> ; addModuleArgument ( pParse <S2SV_ModEnd> , pTab , <S2SV_ModStart> ; addModuleArgument ( pParse <S2SV_ModEnd> , pTab ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int send_event ( int fd , uint16_t type , uint16_t code , int32_t value ) { struct uinput_event event ; BTIF_TRACE_DEBUG ( \"%s<S2SV_blank>type:%u<S2SV_blank>code:%u<S2SV_blank>value:%d\" , __FUNCTION__ , type , code , value ) ; memset ( & event , 0 , sizeof ( event ) ) ; event . type = type ; event . code = code ; event . value = value ; <S2SV_StartBug> return write ( fd , & event , sizeof ( event ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> value ; return TEMP_FAILURE_RETRY ( <S2SV_ModStart> event ) ) )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-10131\n\n```\nCWE-119 static int format8BIM ( Image * ifile , Image * ofile ) { char temp [ MagickPathExtent ] ; unsigned int foundOSType ; int ID , resCount , i , c ; ssize_t count ; unsigned char * PString , * str ; resCount = 0 ; foundOSType = 0 ; ( void ) foundOSType ; c = ReadBlobByte ( ifile ) ; while ( c != EOF ) { if ( c == '8' ) { unsigned char buffer [ 5 ] ; buffer [ 0 ] = ( unsigned char ) c ; for ( i = 1 ; i < 4 ; i ++ ) { c = ReadBlobByte ( ifile ) ; if ( c == EOF ) return ( - 1 ) ; buffer [ i ] = ( unsigned char ) c ; } buffer [ 4 ] = 0 ; if ( strcmp ( ( const char * ) buffer , \"8BIM\" ) == 0 ) foundOSType = 1 ; else continue ; } else { c = ReadBlobByte ( ifile ) ; continue ; } ID = ReadBlobMSBSignedShort ( ifile ) ; if ( ID < 0 ) return ( - 1 ) ; { unsigned char plen ; c = ReadBlobByte ( ifile ) ; if ( c == EOF ) return ( - 1 ) ; plen = ( unsigned char ) c ; PString = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) ( plen + MagickPathExtent ) , sizeof ( * PString ) ) ; if ( PString == ( unsigned char * ) NULL ) return 0 ; for ( i = 0 ; i < plen ; i ++ ) { c = ReadBlobByte ( ifile ) ; if ( c == EOF ) { PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return - 1 ; } PString [ i ] = ( unsigned char ) c ; } PString [ plen ] = 0 ; if ( ( plen & 0x01 ) == 0 ) { c = ReadBlobByte ( ifile ) ; if ( c == EOF ) { PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return - 1 ; } } } count = ( ssize_t ) ReadBlobMSBSignedLong ( ifile ) ; if ( ( count < 0 ) || ( count > GetBlobSize ( ifile ) ) ) { PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return - 1 ; } <S2SV_StartBug> str = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) count , sizeof ( * str ) ) ; <S2SV_EndBug> if ( str == ( unsigned char * ) NULL ) { PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return 0 ; } for ( i = 0 ; i < ( ssize_t ) count ; i ++ ) { c = ReadBlobByte ( ifile ) ; if ( c == EOF ) { str = ( unsigned char * ) RelinquishMagickMemory ( str ) ; PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; return - 1 ; } str [ i ] = ( unsigned char ) c ; } if ( ID != THUMBNAIL_ID ) { if ( strlen ( ( const char * ) PString ) > 0 ) ( void ) FormatLocaleString ( temp , MagickPathExtent , \"8BIM#%d#%s=\" , ID , PString ) ; else ( void ) FormatLocaleString ( temp , MagickPathExtent , \"8BIM#%d=\" , ID ) ; ( void ) WriteBlobString ( ofile , temp ) ; if ( ID == IPTC_ID ) { formatString ( ofile , \"IPTC\" , 4 ) ; formatIPTCfromBuffer ( ofile , ( char * ) str , ( ssize_t ) count ) ; } else formatString ( ofile , ( char * ) str , ( ssize_t ) count ) ; } str = ( unsigned char * ) RelinquishMagickMemory ( str ) ; PString = ( unsigned char * ) RelinquishMagickMemory ( PString ) ; resCount ++ ; c = ReadBlobByte ( ifile ) ; } return resCount ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t ) count + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 struct dst_entry * inet_csk_route_req ( struct sock * sk , const struct request_sock * req ) { struct rtable * rt ; const struct inet_request_sock * ireq = inet_rsk ( req ) ; <S2SV_StartBug> struct ip_options * opt = inet_rsk ( req ) -> opt ; <S2SV_EndBug> struct net * net = sock_net ( sk ) ; struct flowi4 fl4 ; flowi4_init_output ( & fl4 , sk -> sk_bound_dev_if , sk -> sk_mark , RT_CONN_FLAGS ( sk ) , RT_SCOPE_UNIVERSE , sk -> sk_protocol , inet_sk_flowi_flags ( sk ) , <S2SV_StartBug> ( opt && opt -> srr ) ? opt -> faddr : ireq -> rmt_addr , <S2SV_EndBug> ireq -> loc_addr , ireq -> rmt_port , inet_sk ( sk ) -> inet_sport ) ; security_req_classify_flow ( req , flowi4_to_flowi ( & fl4 ) ) ; rt = ip_route_output_flow ( net , & fl4 , sk ) ; if ( IS_ERR ( rt ) ) goto no_route ; <S2SV_StartBug> if ( opt && opt -> is_strictroute && rt -> rt_dst != rt -> rt_gateway ) <S2SV_EndBug> goto route_err ; return & rt -> dst ; route_err : ip_rt_put ( rt ) ; no_route : IP_INC_STATS_BH ( net , IPSTATS_MIB_OUTNOROUTES ) ; return NULL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct ip_options_rcu <S2SV_ModEnd> * opt = <S2SV_ModStart> && opt -> opt . <S2SV_ModStart> ? opt -> opt . <S2SV_ModStart> && opt -> opt .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 int ParseDateTime ( char * timestr , char * lowstr , char * * field , int * ftype , int * numfields , char * * endstr ) { int nf = 0 ; char * lp = lowstr ; * endstr = timestr ; while ( * ( * endstr ) != '\\\\0' ) { <S2SV_StartBug> field [ nf ] = lp ; <S2SV_EndBug> if ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) { * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = * ( * endstr ) ++ ; if ( * ( * endstr ) == ':' ) { ftype [ nf ] = DTK_TIME ; * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) || ( * ( * endstr ) == ':' ) || ( * ( * endstr ) == '.' ) ) * lp ++ = * ( * endstr ) ++ ; } else if ( * ( * endstr ) == '-' || * ( * endstr ) == '/' || * ( * endstr ) == '.' ) { char * dp = ( * endstr ) ; * lp ++ = * ( * endstr ) ++ ; if ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) { ftype [ nf ] = ( * dp == '.' ) ? DTK_NUMBER : DTK_DATE ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = * ( * endstr ) ++ ; if ( * ( * endstr ) == * dp ) { ftype [ nf ] = DTK_DATE ; * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) || ( * ( * endstr ) == * dp ) ) * lp ++ = * ( * endstr ) ++ ; } } else { ftype [ nf ] = DTK_DATE ; while ( isalnum ( ( unsigned char ) * ( * endstr ) ) || ( * ( * endstr ) == * dp ) ) * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; } } else ftype [ nf ] = DTK_NUMBER ; } else if ( * ( * endstr ) == '.' ) { * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = * ( * endstr ) ++ ; ftype [ nf ] = DTK_NUMBER ; } else if ( isalpha ( ( unsigned char ) * ( * endstr ) ) ) { ftype [ nf ] = DTK_STRING ; * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; while ( isalpha ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; if ( * ( * endstr ) == '-' || * ( * endstr ) == '/' || * ( * endstr ) == '.' ) { char * dp = ( * endstr ) ; ftype [ nf ] = DTK_DATE ; * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) || * ( * endstr ) == * dp ) * lp ++ = * ( * endstr ) ++ ; } } else if ( isspace ( ( unsigned char ) * ( * endstr ) ) ) { ( * endstr ) ++ ; continue ; } else if ( * ( * endstr ) == '+' || * ( * endstr ) == '-' ) { * lp ++ = * ( * endstr ) ++ ; while ( isspace ( ( unsigned char ) * ( * endstr ) ) ) ( * endstr ) ++ ; if ( isdigit ( ( unsigned char ) * ( * endstr ) ) ) { ftype [ nf ] = DTK_TZ ; * lp ++ = * ( * endstr ) ++ ; while ( isdigit ( ( unsigned char ) * ( * endstr ) ) || ( * ( * endstr ) == ':' ) || ( * ( * endstr ) == '.' ) ) * lp ++ = * ( * endstr ) ++ ; } else if ( isalpha ( ( unsigned char ) * ( * endstr ) ) ) { ftype [ nf ] = DTK_SPECIAL ; * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; while ( isalpha ( ( unsigned char ) * ( * endstr ) ) ) * lp ++ = pg_tolower ( ( unsigned char ) * ( * endstr ) ++ ) ; } else return - 1 ; } else if ( ispunct ( ( unsigned char ) * ( * endstr ) ) ) { ( * endstr ) ++ ; continue ; } else return - 1 ; * lp ++ = '\\\\0' ; nf ++ ; <S2SV_StartBug> if ( nf > MAXDATEFIELDS ) <S2SV_EndBug> return - 1 ; } * numfields = nf ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] = lp ; if ( nf >= MAXDATEFIELDS ) return - 1 <S2SV_ModStart> nf ++ ; <S2SV_ModEnd> } * numfields\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11219\n\n```\nCWE-190 static void controloptions ( lua_State * L , int opt , const char * * fmt , Header * h ) { switch ( opt ) { case '<S2SV_blank>' : return ; case '>' : h -> endian = BIG ; return ; case '<' : h -> endian = LITTLE ; return ; case '!' : { <S2SV_StartBug> int a = getnum ( L , fmt , MAXALIGN ) ; <S2SV_EndBug> if ( ! isp2 ( a ) ) luaL_error ( L , \"alignment<S2SV_blank>%d<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>power<S2SV_blank>of<S2SV_blank>2\" , a ) ; h -> align = a ; return ; } default : { const char * msg = lua_pushfstring ( L , \"invalid<S2SV_blank>format<S2SV_blank>option<S2SV_blank>\\'%c\\'\" , opt ) ; luaL_argerror ( L , 1 , msg ) ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = getnum ( <S2SV_ModEnd> fmt , MAXALIGN\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * frame ) { AVFilterContext * ctx = inlink -> dst ; const AVPixFmtDescriptor * desc = av_pix_fmt_desc_get ( inlink -> format ) ; uint32_t plane_checksum [ 4 ] = { 0 } , checksum = 0 ; int i , plane , vsub = desc -> log2_chroma_h ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && frame -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> int64_t linesize = av_image_get_linesize ( frame -> format , frame -> width , plane ) ; uint8_t * data = frame -> data [ plane ] ; int h = plane == 1 || plane == 2 ? FF_CEIL_RSHIFT ( inlink -> h , vsub ) : inlink -> h ; if ( linesize < 0 ) return linesize ; for ( i = 0 ; i < h ; i ++ ) { plane_checksum [ plane ] = av_adler32_update ( plane_checksum [ plane ] , data , linesize ) ; checksum = av_adler32_update ( checksum , data , linesize ) ; data += frame -> linesize [ plane ] ; } } av_log ( ctx , AV_LOG_INFO , \"n:%\" PRId64 \"<S2SV_blank>pts:%s<S2SV_blank>pts_time:%s<S2SV_blank>pos:%\" PRId64 \"<S2SV_blank>\" \"fmt:%s<S2SV_blank>sar:%d/%d<S2SV_blank>s:%dx%d<S2SV_blank>i:%c<S2SV_blank>iskey:%d<S2SV_blank>type:%c<S2SV_blank>\" \"checksum:%08X<S2SV_blank>plane_checksum:[%08X\" , inlink -> frame_count , av_ts2str ( frame -> pts ) , av_ts2timestr ( frame -> pts , & inlink -> time_base ) , av_frame_get_pkt_pos ( frame ) , desc -> name , frame -> sample_aspect_ratio . num , frame -> sample_aspect_ratio . den , frame -> width , frame -> height , ! frame -> interlaced_frame ? 'P' : frame -> top_field_first ? 'T' : 'B' , frame -> key_frame , av_get_picture_type_char ( frame -> pict_type ) , checksum , plane_checksum [ 0 ] ) ; <S2SV_StartBug> for ( plane = 1 ; plane < 4 && frame -> data [ plane ] ; plane ++ ) <S2SV_EndBug> av_log ( ctx , AV_LOG_INFO , \"<S2SV_blank>%08X\" , plane_checksum [ plane ] ) ; av_log ( ctx , AV_LOG_INFO , \"]\\\\n\" ) ; return ff_filter_frame ( inlink -> dst -> outputs [ 0 ] , frame ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> frame -> data [ plane ] && frame -> linesize <S2SV_ModStart> [ plane ] && frame -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8687\n\n```\nCWE-119 void safe_fprintf ( FILE * f , const char * fmt , ... ) { char fmtbuff_stack [ 256 ] ; char outbuff [ 256 ] ; char * fmtbuff_heap ; char * fmtbuff ; int fmtbuff_length ; int length , n ; va_list ap ; const char * p ; unsigned i ; wchar_t wc ; char try_wc ; fmtbuff_heap = NULL ; fmtbuff_length = sizeof ( fmtbuff_stack ) ; fmtbuff = fmtbuff_stack ; va_start ( ap , fmt ) ; length = vsnprintf ( fmtbuff , fmtbuff_length , fmt , ap ) ; va_end ( ap ) ; while ( length < 0 || length >= fmtbuff_length ) { if ( length >= fmtbuff_length ) fmtbuff_length = length + 1 ; else if ( fmtbuff_length < 8192 ) fmtbuff_length *= 2 ; else if ( fmtbuff_length < 1000000 ) fmtbuff_length += fmtbuff_length / 4 ; else { length = fmtbuff_length ; fmtbuff_heap [ length - 1 ] = '\\\\0' ; break ; } free ( fmtbuff_heap ) ; fmtbuff_heap = malloc ( fmtbuff_length ) ; if ( fmtbuff_heap != NULL ) { fmtbuff = fmtbuff_heap ; va_start ( ap , fmt ) ; length = vsnprintf ( fmtbuff , fmtbuff_length , fmt , ap ) ; va_end ( ap ) ; } else { length = sizeof ( fmtbuff_stack ) - 1 ; break ; } } if ( mbtowc ( NULL , NULL , 1 ) == - 1 ) { free ( fmtbuff_heap ) ; return ; } p = fmtbuff ; i = 0 ; try_wc = 1 ; while ( * p != '\\\\0' ) { if ( try_wc && ( n = mbtowc ( & wc , p , length ) ) != - 1 ) { length -= n ; if ( iswprint ( wc ) && wc != L'\\\\\\\\' ) { while ( n -- > 0 ) outbuff [ i ++ ] = * p ++ ; } else { while ( n -- > 0 ) i += ( unsigned ) bsdtar_expand_char ( outbuff , i , * p ++ ) ; } } else { i += ( unsigned ) bsdtar_expand_char ( outbuff , i , * p ++ ) ; try_wc = 0 ; } <S2SV_StartBug> if ( i > ( sizeof ( outbuff ) - 20 ) ) { <S2SV_EndBug> outbuff [ i ] = '\\\\0' ; fprintf ( f , \"%s\" , outbuff ) ; i = 0 ; } } outbuff [ i ] = '\\\\0' ; fprintf ( f , \"%s\" , outbuff ) ; free ( fmtbuff_heap ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> outbuff ) - 128 <S2SV_ModEnd> ) ) {\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static int test_candidate_kf ( struct twopass_rc * twopass , <S2SV_EndBug> const FIRSTPASS_STATS * last_frame , const FIRSTPASS_STATS * this_frame , const FIRSTPASS_STATS * next_frame ) { int is_viable_kf = 0 ; <S2SV_StartBug> if ( ( this_frame -> pcnt_second_ref < 0.10 ) && <S2SV_EndBug> <S2SV_StartBug> ( next_frame -> pcnt_second_ref < 0.10 ) && <S2SV_EndBug> ( ( this_frame -> pcnt_inter < 0.05 ) || ( ( ( this_frame -> pcnt_inter - this_frame -> pcnt_neutral ) < 0.35 ) && ( ( this_frame -> intra_error / <S2SV_StartBug> DOUBLE_DIVIDE_CHECK ( this_frame -> coded_error ) ) < 2.5 ) && <S2SV_EndBug> ( ( fabs ( last_frame -> coded_error - this_frame -> coded_error ) / <S2SV_StartBug> DOUBLE_DIVIDE_CHECK ( this_frame -> coded_error ) > 0.40 ) || <S2SV_EndBug> ( fabs ( last_frame -> intra_error - this_frame -> intra_error ) / <S2SV_StartBug> DOUBLE_DIVIDE_CHECK ( this_frame -> intra_error ) > 0.40 ) || <S2SV_EndBug> ( ( next_frame -> intra_error / <S2SV_StartBug> DOUBLE_DIVIDE_CHECK ( next_frame -> coded_error ) ) > 3.5 ) ) ) ) ) { <S2SV_EndBug> int i ; const FIRSTPASS_STATS * start_pos = twopass -> stats_in ; FIRSTPASS_STATS local_next_frame = * next_frame ; double boost_score = 0.0 ; double old_boost_score = 0.0 ; double decay_accumulator = 1.0 ; for ( i = 0 ; i < 16 ; ++ i ) { <S2SV_StartBug> double next_iiratio = ( IIKFACTOR1 * local_next_frame . intra_error / <S2SV_EndBug> DOUBLE_DIVIDE_CHECK ( local_next_frame . coded_error ) ) ; <S2SV_StartBug> if ( next_iiratio > RMAX ) <S2SV_EndBug> next_iiratio = RMAX ; if ( local_next_frame . pcnt_inter > 0.85 ) decay_accumulator *= local_next_frame . pcnt_inter ; else decay_accumulator *= ( 0.85 + local_next_frame . pcnt_inter ) / 2.0 ; boost_score += ( decay_accumulator * next_iiratio ) ; if ( ( local_next_frame . pcnt_inter < 0.05 ) || ( next_iiratio < 1.5 ) || ( ( ( local_next_frame . pcnt_inter - local_next_frame . pcnt_neutral ) < 0.20 ) && ( next_iiratio < 3.0 ) ) || ( ( boost_score - old_boost_score ) < 3.0 ) || ( local_next_frame . intra_error < 200 ) ) { break ; } old_boost_score = boost_score ; if ( EOF == input_stats ( twopass , & local_next_frame ) ) break ; } if ( boost_score > 30.0 && ( i > 3 ) ) { is_viable_kf = 1 ; } else { reset_fpf_position ( twopass , start_pos ) ; is_viable_kf = 0 ; } } return is_viable_kf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> int test_candidate_kf ( TWO_PASS <S2SV_ModEnd> * twopass , <S2SV_ModStart> = 0 ; double pcnt_intra = 1.0 - this_frame -> pcnt_inter ; double modified_pcnt_inter = this_frame -> pcnt_inter - this_frame -> pcnt_neutral ; <S2SV_ModStart> -> pcnt_second_ref < SECOND_REF_USEAGE_THRESH <S2SV_ModEnd> ) && ( <S2SV_ModStart> -> pcnt_second_ref < SECOND_REF_USEAGE_THRESH ) && ( ( this_frame -> pcnt_inter < VERY_LOW_INTER_THRESH ) || ( ( pcnt_intra > MIN_INTRA_LEVEL ) && ( pcnt_intra > ( INTRA_VS_INTER_THRESH * modified_pcnt_inter ) <S2SV_ModEnd> ) && ( <S2SV_ModStart> ) ) < KF_II_ERR_THRESHOLD <S2SV_ModEnd> ) && ( <S2SV_ModStart> coded_error ) > ERR_CHANGE_THRESHOLD <S2SV_ModEnd> ) || ( <S2SV_ModStart> intra_error ) > ERR_CHANGE_THRESHOLD <S2SV_ModEnd> ) || ( <S2SV_ModStart> ) ) > II_IMPROVEMENT_THRESHOLD <S2SV_ModEnd> ) ) ) <S2SV_ModStart> next_iiratio = ( BOOST_FACTOR <S2SV_ModEnd> * local_next_frame . <S2SV_ModStart> ( next_iiratio > KF_II_MAX ) next_iiratio = KF_II_MAX <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17862\n\n```\nCWE-20 static int do_check ( struct bpf_verifier_env * env ) { struct bpf_verifier_state * state ; struct bpf_insn * insns = env -> prog -> insnsi ; struct bpf_reg_state * regs ; int insn_cnt = env -> prog -> len ; int insn_idx , prev_insn_idx = 0 ; int insn_processed = 0 ; bool do_print_state = false ; state = kzalloc ( sizeof ( struct bpf_verifier_state ) , GFP_KERNEL ) ; if ( ! state ) return - ENOMEM ; env -> cur_state = state ; init_reg_state ( env , state -> regs ) ; state -> parent = NULL ; insn_idx = 0 ; for ( ; ; ) { struct bpf_insn * insn ; u8 class ; int err ; if ( insn_idx >= insn_cnt ) { verbose ( env , \"invalid<S2SV_blank>insn<S2SV_blank>idx<S2SV_blank>%d<S2SV_blank>insn_cnt<S2SV_blank>%d\\\\n\" , insn_idx , insn_cnt ) ; return - EFAULT ; } insn = & insns [ insn_idx ] ; class = BPF_CLASS ( insn -> code ) ; if ( ++ insn_processed > BPF_COMPLEXITY_LIMIT_INSNS ) { verbose ( env , \"BPF<S2SV_blank>program<S2SV_blank>is<S2SV_blank>too<S2SV_blank>large.<S2SV_blank>Processed<S2SV_blank>%d<S2SV_blank>insn\\\\n\" , insn_processed ) ; return - E2BIG ; } err = is_state_visited ( env , insn_idx ) ; if ( err < 0 ) return err ; if ( err == 1 ) { if ( env -> log . level ) { if ( do_print_state ) verbose ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:<S2SV_blank>safe\\\\n\" , prev_insn_idx , insn_idx ) ; else verbose ( env , \"%d:<S2SV_blank>safe\\\\n\" , insn_idx ) ; } goto process_bpf_exit ; } if ( need_resched ( ) ) cond_resched ( ) ; if ( env -> log . level > 1 || ( env -> log . level && do_print_state ) ) { if ( env -> log . level > 1 ) verbose ( env , \"%d:\" , insn_idx ) ; else verbose ( env , \"\\\\nfrom<S2SV_blank>%d<S2SV_blank>to<S2SV_blank>%d:\" , prev_insn_idx , insn_idx ) ; print_verifier_state ( env , state ) ; do_print_state = false ; } if ( env -> log . level ) { verbose ( env , \"%d:<S2SV_blank>\" , insn_idx ) ; print_bpf_insn ( verbose , env , insn , env -> allow_ptr_leaks ) ; } err = ext_analyzer_insn_hook ( env , insn_idx , prev_insn_idx ) ; if ( err ) return err ; regs = cur_regs ( env ) ; <S2SV_StartBug> if ( class == BPF_ALU || class == BPF_ALU64 ) { <S2SV_EndBug> err = check_alu_op ( env , insn ) ; if ( err ) return err ; } else if ( class == BPF_LDX ) { enum bpf_reg_type * prev_src_type , src_reg_type ; err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( env , insn -> dst_reg , DST_OP_NO_MARK ) ; if ( err ) return err ; src_reg_type = regs [ insn -> src_reg ] . type ; err = check_mem_access ( env , insn_idx , insn -> src_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_READ , insn -> dst_reg ) ; if ( err ) return err ; prev_src_type = & env -> insn_aux_data [ insn_idx ] . ptr_type ; if ( * prev_src_type == NOT_INIT ) { * prev_src_type = src_reg_type ; } else if ( src_reg_type != * prev_src_type && ( src_reg_type == PTR_TO_CTX || * prev_src_type == PTR_TO_CTX ) ) { verbose ( env , \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_STX ) { enum bpf_reg_type * prev_dst_type , dst_reg_type ; if ( BPF_MODE ( insn -> code ) == BPF_XADD ) { err = check_xadd ( env , insn_idx , insn ) ; if ( err ) return err ; insn_idx ++ ; continue ; } err = check_reg_arg ( env , insn -> src_reg , SRC_OP ) ; if ( err ) return err ; err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; dst_reg_type = regs [ insn -> dst_reg ] . type ; err = check_mem_access ( env , insn_idx , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , insn -> src_reg ) ; if ( err ) return err ; prev_dst_type = & env -> insn_aux_data [ insn_idx ] . ptr_type ; if ( * prev_dst_type == NOT_INIT ) { * prev_dst_type = dst_reg_type ; } else if ( dst_reg_type != * prev_dst_type && ( dst_reg_type == PTR_TO_CTX || * prev_dst_type == PTR_TO_CTX ) ) { verbose ( env , \"same<S2SV_blank>insn<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>used<S2SV_blank>with<S2SV_blank>different<S2SV_blank>pointers\\\\n\" ) ; return - EINVAL ; } } else if ( class == BPF_ST ) { if ( BPF_MODE ( insn -> code ) != BPF_MEM || insn -> src_reg != BPF_REG_0 ) { verbose ( env , \"BPF_ST<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , insn -> dst_reg , SRC_OP ) ; if ( err ) return err ; err = check_mem_access ( env , insn_idx , insn -> dst_reg , insn -> off , BPF_SIZE ( insn -> code ) , BPF_WRITE , - 1 ) ; if ( err ) return err ; } else if ( class == BPF_JMP ) { u8 opcode = BPF_OP ( insn -> code ) ; if ( opcode == BPF_CALL ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> off != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_CALL<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_call ( env , insn -> imm , insn_idx ) ; if ( err ) return err ; } else if ( opcode == BPF_JA ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_JA<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } insn_idx += insn -> off + 1 ; continue ; } else if ( opcode == BPF_EXIT ) { if ( BPF_SRC ( insn -> code ) != BPF_K || insn -> imm != 0 || insn -> src_reg != BPF_REG_0 || insn -> dst_reg != BPF_REG_0 ) { verbose ( env , \"BPF_EXIT<S2SV_blank>uses<S2SV_blank>reserved<S2SV_blank>fields\\\\n\" ) ; return - EINVAL ; } err = check_reg_arg ( env , BPF_REG_0 , SRC_OP ) ; if ( err ) return err ; if ( is_pointer_value ( env , BPF_REG_0 ) ) { verbose ( env , \"R0<S2SV_blank>leaks<S2SV_blank>addr<S2SV_blank>as<S2SV_blank>return<S2SV_blank>value\\\\n\" ) ; return - EACCES ; } err = check_return_code ( env ) ; if ( err ) return err ; process_bpf_exit : err = pop_stack ( env , & prev_insn_idx , & insn_idx ) ; if ( err < 0 ) { if ( err != - ENOENT ) return err ; break ; } else { do_print_state = true ; continue ; } } else { err = check_cond_jmp_op ( env , insn , & insn_idx ) ; if ( err ) return err ; } } else if ( class == BPF_LD ) { u8 mode = BPF_MODE ( insn -> code ) ; if ( mode == BPF_ABS || mode == BPF_IND ) { err = check_ld_abs ( env , insn ) ; if ( err ) return err ; } else if ( mode == BPF_IMM ) { err = check_ld_imm ( env , insn ) ; if ( err ) return err ; insn_idx ++ ; <S2SV_StartBug> } else { <S2SV_EndBug> verbose ( env , \"invalid<S2SV_blank>BPF_LD<S2SV_blank>mode\\\\n\" ) ; return - EINVAL ; } } else { verbose ( env , \"unknown<S2SV_blank>insn<S2SV_blank>class<S2SV_blank>%d\\\\n\" , class ) ; return - EINVAL ; } insn_idx ++ ; } verbose ( env , \"processed<S2SV_blank>%d<S2SV_blank>insns,<S2SV_blank>stack<S2SV_blank>depth<S2SV_blank>%d\\\\n\" , insn_processed , env -> prog -> aux -> stack_depth ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> env ) ; env -> insn_aux_data [ insn_idx ] . seen = true ; <S2SV_ModStart> insn_idx ++ ; env -> insn_aux_data [ insn_idx ] . seen = true ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-787 void mp_encode_lua_table_as_array ( lua_State * L , mp_buf * buf , int level ) { # if LUA_VERSION_NUM < 502 size_t len = lua_objlen ( L , - 1 ) , j ; # else size_t len = lua_rawlen ( L , - 1 ) , j ; # endif mp_encode_array ( L , buf , len ) ; <S2SV_StartBug> for ( j = 1 ; j <= len ; j ++ ) { <S2SV_EndBug> lua_pushnumber ( L , j ) ; lua_gettable ( L , - 2 ) ; mp_encode_lua_type ( L , buf , level + 1 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len ) ; luaL_checkstack ( L , 1 , \"in<S2SV_blank>function<S2SV_blank>mp_encode_lua_table_as_array\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5873\n\n```\nCWE-119 php_http_url_t * php_http_url_parse ( const char * str , size_t len , unsigned flags TSRMLS_DC ) { <S2SV_StartBug> size_t maxlen = 3 * len ; <S2SV_EndBug> struct parse_state * state = ecalloc ( 1 , sizeof ( * state ) + maxlen ) ; state -> end = str + len ; state -> ptr = str ; state -> flags = flags ; state -> maxlen = maxlen ; TSRMLS_SET_CTX ( state -> ts ) ; if ( ! parse_scheme ( state ) ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>URL<S2SV_blank>scheme:<S2SV_blank>\\'%s\\'\" , state -> ptr ) ; efree ( state ) ; return NULL ; } if ( ! parse_hier ( state ) ) { efree ( state ) ; return NULL ; } if ( ! parse_query ( state ) ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>URL<S2SV_blank>query:<S2SV_blank>\\'%s\\'\" , state -> ptr ) ; efree ( state ) ; return NULL ; } if ( ! parse_fragment ( state ) ) { php_error_docref ( NULL TSRMLS_CC , E_WARNING , \"Failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>URL<S2SV_blank>fragment:<S2SV_blank>\\'%s\\'\" , state -> ptr ) ; efree ( state ) ; return NULL ; } return ( php_http_url_t * ) state ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 3 * len + 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16840\n\n```\nCWE-416 CURLcode Curl_close ( struct Curl_easy * data ) { struct Curl_multi * m ; if ( ! data ) return CURLE_OK ; Curl_expire_clear ( data ) ; m = data -> multi ; if ( m ) curl_multi_remove_handle ( data -> multi , data ) ; <S2SV_StartBug> if ( data -> multi_easy ) <S2SV_EndBug> <S2SV_StartBug> curl_multi_cleanup ( data -> multi_easy ) ; <S2SV_EndBug> Curl_llist_destroy ( & data -> state . timeoutlist , NULL ) ; data -> magic = 0 ; if ( data -> state . rangestringalloc ) free ( data -> state . range ) ; Curl_free_request_state ( data ) ; Curl_ssl_close_all ( data ) ; Curl_safefree ( data -> state . first_host ) ; Curl_safefree ( data -> state . scratch ) ; Curl_ssl_free_certinfo ( data ) ; free ( data -> req . newurl ) ; data -> req . newurl = NULL ; if ( data -> change . referer_alloc ) { Curl_safefree ( data -> change . referer ) ; data -> change . referer_alloc = FALSE ; } data -> change . referer = NULL ; Curl_up_free ( data ) ; Curl_safefree ( data -> state . buffer ) ; Curl_safefree ( data -> state . headerbuff ) ; Curl_safefree ( data -> state . ulbuf ) ; Curl_flush_cookies ( data , 1 ) ; Curl_digest_cleanup ( data ) ; Curl_safefree ( data -> info . contenttype ) ; Curl_safefree ( data -> info . wouldredirect ) ; Curl_resolver_cleanup ( data -> state . resolver ) ; Curl_http2_cleanup_dependencies ( data ) ; Curl_convert_close ( data ) ; if ( data -> share ) { Curl_share_lock ( data , CURL_LOCK_DATA_SHARE , CURL_LOCK_ACCESS_SINGLE ) ; data -> share -> dirty -- ; Curl_share_unlock ( data , CURL_LOCK_DATA_SHARE ) ; } Curl_wildcard_dtor ( & data -> wildcard ) ; Curl_freeset ( data ) ; free ( data ) ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> multi_easy ) { <S2SV_ModStart> multi_easy ) ; data -> multi_easy = NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9985\n\n```\nCWE-125 static irqreturn_t snd_msnd_interrupt ( int irq , void * dev_id ) { struct snd_msnd * chip = dev_id ; void * pwDSPQData = chip -> mappedbase + DSPQ_DATA_BUFF ; <S2SV_StartBug> while ( readw ( chip -> DSPQ + JQS_wTail ) != readw ( chip -> DSPQ + JQS_wHead ) ) { <S2SV_EndBug> u16 wTmp ; snd_msnd_eval_dsp_msg ( chip , readw ( pwDSPQData + 2 * readw ( chip -> DSPQ + JQS_wHead ) ) ) ; <S2SV_StartBug> wTmp = readw ( chip -> DSPQ + JQS_wHead ) + 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( wTmp > readw ( chip -> DSPQ + JQS_wSize ) ) <S2SV_EndBug> writew ( 0 , chip -> DSPQ + JQS_wHead ) ; else writew ( wTmp , chip -> DSPQ + JQS_wHead ) ; <S2SV_StartBug> } <S2SV_EndBug> inb ( chip -> io + HP_RXL ) ; return IRQ_HANDLED ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> + DSPQ_DATA_BUFF ; u16 head , tail , size ; head <S2SV_ModEnd> = readw ( <S2SV_ModStart> + JQS_wHead ) ; tail = readw ( chip -> DSPQ + JQS_wTail ) ; size = <S2SV_ModEnd> readw ( chip <S2SV_ModStart> + JQS_wSize ) ; if ( head > size || tail > size ) goto out ; while ( head != tail ) { snd_msnd_eval_dsp_msg ( chip , readw ( pwDSPQData + 2 * head ) ) ; if ( ++ head > size ) head = 0 ; writew ( head <S2SV_ModEnd> , chip -> <S2SV_ModStart> ) ; } out :\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 PyMODINIT_FUNC PyInit__ast3 ( void ) { PyObject * m , * d ; if ( ! init_types ( ) ) return NULL ; <S2SV_StartBug> m = PyModule_Create ( & _astmodule3 ) ; <S2SV_EndBug> if ( ! m ) return NULL ; d = PyModule_GetDict ( m ) ; if ( PyDict_SetItemString ( d , \"AST\" , ( PyObject * ) & AST_type ) < 0 ) return NULL ; if ( PyModule_AddIntMacro ( m , PyCF_ONLY_AST ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"mod\" , ( PyObject * ) mod_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Module\" , ( PyObject * ) Module_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Interactive\" , ( PyObject * ) Interactive_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Expression\" , ( PyObject * ) Expression_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"FunctionType\" , ( PyObject * ) FunctionType_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Suite\" , ( PyObject * ) Suite_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"stmt\" , ( PyObject * ) stmt_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"FunctionDef\" , ( PyObject * ) FunctionDef_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AsyncFunctionDef\" , ( PyObject * ) AsyncFunctionDef_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ClassDef\" , ( PyObject * ) ClassDef_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Return\" , ( PyObject * ) Return_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Delete\" , ( PyObject * ) Delete_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Assign\" , ( PyObject * ) Assign_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AugAssign\" , ( PyObject * ) AugAssign_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AnnAssign\" , ( PyObject * ) AnnAssign_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"For\" , ( PyObject * ) For_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AsyncFor\" , ( PyObject * ) AsyncFor_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"While\" , ( PyObject * ) While_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"If\" , ( PyObject * ) If_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"With\" , ( PyObject * ) With_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AsyncWith\" , ( PyObject * ) AsyncWith_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Raise\" , ( PyObject * ) Raise_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Try\" , ( PyObject * ) Try_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Assert\" , ( PyObject * ) Assert_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Import\" , ( PyObject * ) Import_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ImportFrom\" , ( PyObject * ) ImportFrom_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Global\" , ( PyObject * ) Global_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Nonlocal\" , ( PyObject * ) Nonlocal_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Expr\" , ( PyObject * ) Expr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Pass\" , ( PyObject * ) Pass_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Break\" , ( PyObject * ) Break_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Continue\" , ( PyObject * ) Continue_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"expr\" , ( PyObject * ) expr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BoolOp\" , ( PyObject * ) BoolOp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BinOp\" , ( PyObject * ) BinOp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"UnaryOp\" , ( PyObject * ) UnaryOp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Lambda\" , ( PyObject * ) Lambda_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"IfExp\" , ( PyObject * ) IfExp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Dict\" , ( PyObject * ) Dict_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Set\" , ( PyObject * ) Set_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ListComp\" , ( PyObject * ) ListComp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"SetComp\" , ( PyObject * ) SetComp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"DictComp\" , ( PyObject * ) DictComp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"GeneratorExp\" , ( PyObject * ) GeneratorExp_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Await\" , ( PyObject * ) Await_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Yield\" , ( PyObject * ) Yield_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"YieldFrom\" , ( PyObject * ) YieldFrom_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Compare\" , ( PyObject * ) Compare_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Call\" , ( PyObject * ) Call_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Num\" , ( PyObject * ) Num_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Str\" , ( PyObject * ) Str_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"FormattedValue\" , ( PyObject * ) FormattedValue_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"JoinedStr\" , ( PyObject * ) JoinedStr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Bytes\" , ( PyObject * ) Bytes_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"NameConstant\" , ( PyObject * ) NameConstant_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Ellipsis\" , ( PyObject * ) Ellipsis_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Constant\" , ( PyObject * ) Constant_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Attribute\" , ( PyObject * ) Attribute_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Subscript\" , ( PyObject * ) Subscript_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Starred\" , ( PyObject * ) Starred_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Name\" , ( PyObject * ) Name_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"List\" , ( PyObject * ) List_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Tuple\" , ( PyObject * ) Tuple_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"expr_context\" , ( PyObject * ) expr_context_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Load\" , ( PyObject * ) Load_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Store\" , ( PyObject * ) Store_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Del\" , ( PyObject * ) Del_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AugLoad\" , ( PyObject * ) AugLoad_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"AugStore\" , ( PyObject * ) AugStore_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Param\" , ( PyObject * ) Param_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"slice\" , ( PyObject * ) slice_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Slice\" , ( PyObject * ) Slice_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ExtSlice\" , ( PyObject * ) ExtSlice_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Index\" , ( PyObject * ) Index_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"boolop\" , ( PyObject * ) boolop_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"And\" , ( PyObject * ) And_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Or\" , ( PyObject * ) Or_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"operator\" , ( PyObject * ) operator_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Add\" , ( PyObject * ) Add_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Sub\" , ( PyObject * ) Sub_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Mult\" , ( PyObject * ) Mult_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"MatMult\" , ( PyObject * ) MatMult_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Div\" , ( PyObject * ) Div_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Mod\" , ( PyObject * ) Mod_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Pow\" , ( PyObject * ) Pow_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"LShift\" , ( PyObject * ) LShift_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"RShift\" , ( PyObject * ) RShift_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BitOr\" , ( PyObject * ) BitOr_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BitXor\" , ( PyObject * ) BitXor_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"BitAnd\" , ( PyObject * ) BitAnd_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"FloorDiv\" , ( PyObject * ) FloorDiv_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"unaryop\" , ( PyObject * ) unaryop_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Invert\" , ( PyObject * ) Invert_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Not\" , ( PyObject * ) Not_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"UAdd\" , ( PyObject * ) UAdd_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"USub\" , ( PyObject * ) USub_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"cmpop\" , ( PyObject * ) cmpop_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Eq\" , ( PyObject * ) Eq_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"NotEq\" , ( PyObject * ) NotEq_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Lt\" , ( PyObject * ) Lt_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"LtE\" , ( PyObject * ) LtE_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Gt\" , ( PyObject * ) Gt_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"GtE\" , ( PyObject * ) GtE_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"Is\" , ( PyObject * ) Is_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"IsNot\" , ( PyObject * ) IsNot_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"In\" , ( PyObject * ) In_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"NotIn\" , ( PyObject * ) NotIn_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"comprehension\" , ( PyObject * ) comprehension_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"excepthandler\" , ( PyObject * ) excepthandler_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"ExceptHandler\" , ( PyObject * ) ExceptHandler_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"arguments\" , ( PyObject * ) arguments_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"arg\" , ( PyObject * ) arg_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"keyword\" , ( PyObject * ) keyword_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"alias\" , ( PyObject * ) alias_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"withitem\" , ( PyObject * ) withitem_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"type_ignore\" , ( PyObject * ) type_ignore_type ) < 0 ) return NULL ; if ( PyDict_SetItemString ( d , \"TypeIgnore\" , ( PyObject * ) TypeIgnore_type ) < 0 ) return NULL ; return m ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PyModule_Create ( & _astmodule <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-0871\n\n```\nCWE-362 static int ptrace_check_attach ( struct task_struct * child , bool ignore_state ) { int ret = - ESRCH ; read_lock ( & tasklist_lock ) ; <S2SV_StartBug> if ( ( child -> ptrace & PT_PTRACED ) && child -> parent == current ) { <S2SV_EndBug> <S2SV_StartBug> spin_lock_irq ( & child -> sighand -> siglock ) ; <S2SV_EndBug> WARN_ON_ONCE ( task_is_stopped ( child ) ) ; <S2SV_StartBug> if ( ignore_state || ( task_is_traced ( child ) && <S2SV_EndBug> ! ( child -> jobctl & JOBCTL_LISTENING ) ) ) <S2SV_StartBug> ret = 0 ; <S2SV_EndBug> spin_unlock_irq ( & child -> sighand -> siglock ) ; } read_unlock ( & tasklist_lock ) ; <S2SV_StartBug> if ( ! ret && ! ignore_state ) <S2SV_EndBug> <S2SV_StartBug> ret = wait_task_inactive ( child , TASK_TRACED ) ? 0 : - ESRCH ; <S2SV_EndBug> return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> child -> ptrace <S2SV_ModStart> child -> ptrace <S2SV_ModEnd> && child -> <S2SV_ModStart> current ) { WARN_ON ( child -> state == __TASK_TRACED <S2SV_ModEnd> ) ; if <S2SV_ModStart> ( ignore_state || ptrace_freeze_traced ( child <S2SV_ModEnd> ) ) ret <S2SV_ModStart> ret = 0 <S2SV_ModEnd> ; } read_unlock <S2SV_ModStart> ! ignore_state ) { if ( ! <S2SV_ModEnd> wait_task_inactive ( child <S2SV_ModStart> ( child , __TASK_TRACED ) ) { WARN_ON ( child -> state == __TASK_TRACED ) ; ret = <S2SV_ModEnd> - ESRCH ; <S2SV_ModStart> - ESRCH ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-9003\n\n```\nCWE-416 static void free_user ( struct kref * ref ) { struct ipmi_user * user = container_of ( ref , struct ipmi_user , refcount ) ; <S2SV_StartBug> kfree ( user ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> refcount ) ; cleanup_srcu_struct ( & user -> release_barrier ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-285(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7097\n\n```\nCWE-285 int ext2_set_acl ( struct inode * inode , struct posix_acl * acl , int type ) { int name_index ; void * value = NULL ; size_t size = 0 ; int error ; switch ( type ) { case ACL_TYPE_ACCESS : name_index = EXT2_XATTR_INDEX_POSIX_ACL_ACCESS ; if ( acl ) { <S2SV_StartBug> error = posix_acl_equiv_mode ( acl , & inode -> i_mode ) ; <S2SV_EndBug> if ( error < 0 ) return error ; else { inode -> i_ctime = CURRENT_TIME_SEC ; mark_inode_dirty ( inode ) ; <S2SV_StartBug> if ( error == 0 ) <S2SV_EndBug> acl = NULL ; } } break ; case ACL_TYPE_DEFAULT : name_index = EXT2_XATTR_INDEX_POSIX_ACL_DEFAULT ; if ( ! S_ISDIR ( inode -> i_mode ) ) return acl ? - EACCES : 0 ; break ; default : return - EINVAL ; } if ( acl ) { value = ext2_acl_to_disk ( acl , & size ) ; if ( IS_ERR ( value ) ) return ( int ) PTR_ERR ( value ) ; } error = ext2_xattr_set ( inode , name_index , \"\" , value , size , 0 ) ; kfree ( value ) ; if ( ! error ) set_cached_acl ( inode , type , acl ) ; return error ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { error = posix_acl_update_mode ( inode <S2SV_ModEnd> , & inode <S2SV_ModStart> inode -> i_mode , & acl ) ; if ( error ) return error ; <S2SV_ModEnd> inode -> i_ctime <S2SV_ModStart> inode ) ; <S2SV_ModEnd> } break ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-78(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-15121\n\n```\nCWE-78 static int download ( struct SPDBDownloader * pd ) { SPDBDownloaderOpt * opt = pd -> opt ; <S2SV_StartBug> char * curl_cmd = NULL ; <S2SV_EndBug> char * extractor_cmd = NULL ; char * abspath_to_archive = NULL ; char * abspath_to_file = NULL ; char * archive_name = NULL ; size_t archive_name_len = 0 ; char * symbol_store_path = NULL ; char * dbg_file = NULL ; char * guid = NULL ; char * archive_name_escaped = NULL ; char * user_agent = NULL ; char * symbol_server = NULL ; int res = 0 ; int cmd_ret ; if ( ! opt -> dbg_file || ! * opt -> dbg_file ) { return 0 ; } <S2SV_StartBug> if ( ! checkCurl ( ) ) { <S2SV_EndBug> return 0 ; } archive_name_len = strlen ( opt -> dbg_file ) ; archive_name = malloc ( archive_name_len + 1 ) ; if ( ! archive_name ) { return 0 ; } memcpy ( archive_name , opt -> dbg_file , archive_name_len + 1 ) ; archive_name [ archive_name_len - 1 ] = '_' ; <S2SV_StartBug> symbol_store_path = r_str_escape ( opt -> symbol_store_path ) ; <S2SV_EndBug> dbg_file = r_str_escape ( opt -> dbg_file ) ; guid = r_str_escape ( opt -> guid ) ; archive_name_escaped = r_str_escape ( archive_name ) ; user_agent = r_str_escape ( opt -> user_agent ) ; symbol_server = r_str_escape ( opt -> symbol_server ) ; <S2SV_StartBug> abspath_to_archive = r_str_newf ( \"%s%s%s%s%s%s%s\" , <S2SV_EndBug> symbol_store_path , R_SYS_DIR , dbg_file , R_SYS_DIR , guid , R_SYS_DIR , archive_name_escaped ) ; abspath_to_file = strdup ( abspath_to_archive ) ; abspath_to_file [ strlen ( abspath_to_file ) - 1 ] = 'b' ; if ( r_file_exists ( abspath_to_file ) ) { eprintf ( \"File<S2SV_blank>already<S2SV_blank>downloaded.\\\\n\" ) ; R_FREE ( user_agent ) ; R_FREE ( abspath_to_archive ) ; R_FREE ( archive_name_escaped ) ; R_FREE ( symbol_store_path ) ; R_FREE ( dbg_file ) ; R_FREE ( guid ) ; R_FREE ( archive_name ) ; R_FREE ( abspath_to_file ) ; R_FREE ( symbol_server ) ; return 1 ; } if ( checkExtract ( ) || opt -> extract == 0 ) { res = 1 ; curl_cmd = r_str_newf ( \"curl<S2SV_blank>-sfLA<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>\\\\\"%s/%s/%s/%s\\\\\"<S2SV_blank>--create-dirs<S2SV_blank>-o<S2SV_blank>\\\\\"%s\\\\\"\" , user_agent , symbol_server , dbg_file , guid , archive_name_escaped , abspath_to_archive ) ; # if __WINDOWS__ const char * cabextractor = \"expand\" ; const char * format = \"%s<S2SV_blank>%s<S2SV_blank>%s\" ; extractor_cmd = r_str_newf ( format , cabextractor , abspath_to_archive , abspath_to_file ) ; # else <S2SV_StartBug> const char * cabextractor = \"cabextract\" ; <S2SV_EndBug> const char * format = \"%s<S2SV_blank>-d<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>\\\\\"%s\\\\\"\" ; char * abspath_to_dir = r_file_dirname ( abspath_to_archive ) ; <S2SV_StartBug> extractor_cmd = r_str_newf ( format , cabextractor , abspath_to_dir , abspath_to_archive ) ; <S2SV_EndBug> R_FREE ( abspath_to_dir ) ; # endif <S2SV_StartBug> eprintf ( \"Attempting<S2SV_blank>to<S2SV_blank>download<S2SV_blank>compressed<S2SV_blank>pdb<S2SV_blank>in<S2SV_blank>%s\\\\n\" , abspath_to_archive ) ; <S2SV_EndBug> if ( ( cmd_ret = r_sys_cmd ( curl_cmd ) != 0 ) ) { eprintf ( \"curl<S2SV_blank>exited<S2SV_blank>with<S2SV_blank>error<S2SV_blank>%d\\\\n\" , cmd_ret ) ; res = 0 ; } eprintf ( \"Attempting<S2SV_blank>to<S2SV_blank>decompress<S2SV_blank>pdb\\\\n\" ) ; <S2SV_StartBug> if ( opt -> extract > 0 ) { <S2SV_EndBug> if ( res && ( ( cmd_ret = r_sys_cmd ( extractor_cmd ) ) != 0 ) ) { eprintf ( \"cab<S2SV_blank>extractor<S2SV_blank>exited<S2SV_blank>with<S2SV_blank>error<S2SV_blank>%d\\\\n\" , cmd_ret ) ; res = 0 ; } r_file_rm ( abspath_to_archive ) ; } <S2SV_StartBug> R_FREE ( curl_cmd ) ; <S2SV_EndBug> } if ( res == 0 ) { eprintf ( \"Falling<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uncompressed<S2SV_blank>pdb\\\\n\" ) ; <S2SV_StartBug> res = 1 ; <S2SV_EndBug> archive_name_escaped [ strlen ( archive_name_escaped ) - 1 ] = 'b' ; curl_cmd = r_str_newf ( \"curl<S2SV_blank>-sfLA<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>\\\\\"%s/%s/%s/%s\\\\\"<S2SV_blank>--create-dirs<S2SV_blank>-o<S2SV_blank>\\\\\"%s\\\\\"\" , opt -> user_agent , opt -> symbol_server , opt -> dbg_file , opt -> guid , archive_name_escaped , abspath_to_file ) ; eprintf ( \"Attempting<S2SV_blank>to<S2SV_blank>download<S2SV_blank>uncompressed<S2SV_blank>pdb<S2SV_blank>in<S2SV_blank>%s\\\\n\" , abspath_to_file ) ; <S2SV_StartBug> if ( ( cmd_ret = r_sys_cmd ( curl_cmd ) != 0 ) ) { <S2SV_EndBug> eprintf ( \"curl<S2SV_blank>exited<S2SV_blank>with<S2SV_blank>error<S2SV_blank>%d\\\\n\" , cmd_ret ) ; res = 0 ; } R_FREE ( curl_cmd ) ; } R_FREE ( abspath_to_archive ) ; R_FREE ( abspath_to_file ) ; R_FREE ( archive_name ) ; R_FREE ( extractor_cmd ) ; R_FREE ( symbol_store_path ) ; R_FREE ( dbg_file ) ; R_FREE ( guid ) ; R_FREE ( archive_name_escaped ) ; R_FREE ( user_agent ) ; R_FREE ( symbol_server ) ; return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> opt ; <S2SV_ModEnd> int res = <S2SV_ModStart> 0 ; } char * abspath_to_file = r_str_newf ( \"%s%s%s%s%s%s%s\" , opt -> symbol_store_path , R_SYS_DIR , opt -> dbg_file , R_SYS_DIR , opt -> guid , R_SYS_DIR , opt -> dbg_file ) ; if ( r_file_exists ( abspath_to_file ) ) { eprintf ( \"File<S2SV_blank>already<S2SV_blank>downloaded.\\\\n\" ) ; free ( abspath_to_file ) ; return 1 ; } if ( checkExtract ( ) || opt -> extract == 0 ) { char * extractor_cmd = NULL ; char * archive_name = strdup ( opt -> dbg_file ) ; archive_name [ strlen ( archive_name ) <S2SV_ModEnd> - 1 ] <S2SV_ModStart> = '_' ; char * abspath_to_archive = r_str_newf ( \"%s%s%s%s%s%s%s\" , opt -> symbol_store_path , R_SYS_DIR , opt -> dbg_file , R_SYS_DIR , opt -> guid , R_SYS_DIR , archive_name ) ; eprintf ( \"Attempting<S2SV_blank>to<S2SV_blank>download<S2SV_blank>compressed<S2SV_blank>pdb<S2SV_blank>in<S2SV_blank>%s\\\\n\" , abspath_to_archive ) ; char * abs_arch_esc = r_str_escape_sh ( abspath_to_archive ) ; # if __WINDOWS__ char * abs_file_esc = r_str_escape_sh ( abspath_to_file ) ; extractor_cmd <S2SV_ModEnd> = r_str_newf ( <S2SV_ModStart> = r_str_newf ( \"expand<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>\\\\\"%s\\\\\"\" , abs_arch_esc , abs_file_esc ) ; free ( abs_file_esc <S2SV_ModEnd> ) ; # <S2SV_ModStart> ; # else <S2SV_ModEnd> char * abspath_to_dir <S2SV_ModStart> abspath_to_archive ) ; char * abs_dir_esc = r_str_escape_sh ( abspath_to_dir ) ; <S2SV_ModStart> = r_str_newf ( \"cabextract<S2SV_blank>-d<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>\\\\\"%s\\\\\"\" , abs_arch_esc , abs_dir_esc ) ; free ( abs_dir_esc ) ; free <S2SV_ModEnd> ( abspath_to_dir ) <S2SV_ModStart> ; # endif free ( abs_arch_esc ) ; res = download_and_write ( opt , archive_name <S2SV_ModEnd> ) ; if <S2SV_ModStart> extract > 0 && res ) { eprintf ( \"Attempting<S2SV_blank>to<S2SV_blank>decompress<S2SV_blank>pdb\\\\n\" ) ; if ( res && <S2SV_ModEnd> ( ( cmd_ret <S2SV_ModStart> ) ; } free ( archive_name ) ; free ( abspath_to_archive <S2SV_ModEnd> ) ; } <S2SV_ModStart> \"Falling<S2SV_blank>back<S2SV_blank>to<S2SV_blank>uncompressed<S2SV_blank>pdb\\\\n\" ) ; <S2SV_ModEnd> eprintf ( \"Attempting<S2SV_blank>to<S2SV_blank>download<S2SV_blank>uncompressed<S2SV_blank>pdb<S2SV_blank>in<S2SV_blank>%s\\\\n\" <S2SV_ModStart> abspath_to_file ) ; res = download_and_write ( opt , opt -> dbg_file ) ; } free ( abspath_to_file <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5771\n\n```\nCWE-416 PHP_MINIT_FUNCTION ( spl_array ) { REGISTER_SPL_STD_CLASS_EX ( ArrayObject , spl_array_object_new , spl_funcs_ArrayObject ) ; REGISTER_SPL_IMPLEMENTS ( ArrayObject , Aggregate ) ; REGISTER_SPL_IMPLEMENTS ( ArrayObject , ArrayAccess ) ; REGISTER_SPL_IMPLEMENTS ( ArrayObject , Serializable ) ; REGISTER_SPL_IMPLEMENTS ( ArrayObject , Countable ) ; memcpy ( & spl_handler_ArrayObject , zend_get_std_object_handlers ( ) , sizeof ( zend_object_handlers ) ) ; spl_handler_ArrayObject . clone_obj = spl_array_object_clone ; spl_handler_ArrayObject . read_dimension = spl_array_read_dimension ; spl_handler_ArrayObject . write_dimension = spl_array_write_dimension ; spl_handler_ArrayObject . unset_dimension = spl_array_unset_dimension ; spl_handler_ArrayObject . has_dimension = spl_array_has_dimension ; spl_handler_ArrayObject . count_elements = spl_array_object_count_elements ; spl_handler_ArrayObject . get_properties = spl_array_get_properties ; <S2SV_StartBug> spl_handler_ArrayObject . get_debug_info = spl_array_get_debug_info ; <S2SV_EndBug> spl_handler_ArrayObject . read_property = spl_array_read_property ; spl_handler_ArrayObject . write_property = spl_array_write_property ; spl_handler_ArrayObject . get_property_ptr_ptr = spl_array_get_property_ptr_ptr ; spl_handler_ArrayObject . has_property = spl_array_has_property ; spl_handler_ArrayObject . unset_property = spl_array_unset_property ; spl_handler_ArrayObject . compare_objects = spl_array_compare_objects ; REGISTER_SPL_STD_CLASS_EX ( ArrayIterator , spl_array_object_new , spl_funcs_ArrayIterator ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , Iterator ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , ArrayAccess ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , SeekableIterator ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , Serializable ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , Countable ) ; memcpy ( & spl_handler_ArrayIterator , & spl_handler_ArrayObject , sizeof ( zend_object_handlers ) ) ; spl_ce_ArrayIterator -> get_iterator = spl_array_get_iterator ; REGISTER_SPL_SUB_CLASS_EX ( RecursiveArrayIterator , ArrayIterator , spl_array_object_new , spl_funcs_RecursiveArrayIterator ) ; REGISTER_SPL_IMPLEMENTS ( RecursiveArrayIterator , RecursiveIterator ) ; spl_ce_RecursiveArrayIterator -> get_iterator = spl_array_get_iterator ; REGISTER_SPL_CLASS_CONST_LONG ( ArrayObject , \"STD_PROP_LIST\" , SPL_ARRAY_STD_PROP_LIST ) ; REGISTER_SPL_CLASS_CONST_LONG ( ArrayObject , \"ARRAY_AS_PROPS\" , SPL_ARRAY_ARRAY_AS_PROPS ) ; REGISTER_SPL_CLASS_CONST_LONG ( ArrayIterator , \"STD_PROP_LIST\" , SPL_ARRAY_STD_PROP_LIST ) ; REGISTER_SPL_CLASS_CONST_LONG ( ArrayIterator , \"ARRAY_AS_PROPS\" , SPL_ARRAY_ARRAY_AS_PROPS ) ; REGISTER_SPL_CLASS_CONST_LONG ( RecursiveArrayIterator , \"CHILD_ARRAYS_ONLY\" , SPL_ARRAY_CHILD_ARRAYS_ONLY ) ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> get_debug_info = spl_array_get_debug_info ; spl_handler_ArrayObject . get_gc = spl_array_get_gc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-401(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19051\n\n```\nCWE-401 int i2400m_op_rfkill_sw_toggle ( struct wimax_dev * wimax_dev , enum wimax_rf_state state ) { int result ; struct i2400m * i2400m = wimax_dev_to_i2400m ( wimax_dev ) ; struct device * dev = i2400m_dev ( i2400m ) ; struct sk_buff * ack_skb ; struct { struct i2400m_l3l4_hdr hdr ; struct i2400m_tlv_rf_operation sw_rf ; } __packed * cmd ; char strerr [ 32 ] ; d_fnstart ( 4 , dev , \"(wimax_dev<S2SV_blank>%p<S2SV_blank>state<S2SV_blank>%d)\\\\n\" , wimax_dev , state ) ; result = - ENOMEM ; cmd = kzalloc ( sizeof ( * cmd ) , GFP_KERNEL ) ; if ( cmd == NULL ) goto error_alloc ; cmd -> hdr . type = cpu_to_le16 ( I2400M_MT_CMD_RF_CONTROL ) ; cmd -> hdr . length = sizeof ( cmd -> sw_rf ) ; cmd -> hdr . version = cpu_to_le16 ( I2400M_L3L4_VERSION ) ; cmd -> sw_rf . hdr . type = cpu_to_le16 ( I2400M_TLV_RF_OPERATION ) ; cmd -> sw_rf . hdr . length = cpu_to_le16 ( sizeof ( cmd -> sw_rf . status ) ) ; switch ( state ) { case WIMAX_RF_OFF : cmd -> sw_rf . status = cpu_to_le32 ( 2 ) ; break ; case WIMAX_RF_ON : cmd -> sw_rf . status = cpu_to_le32 ( 1 ) ; break ; default : BUG ( ) ; } ack_skb = i2400m_msg_to_dev ( i2400m , cmd , sizeof ( * cmd ) ) ; result = PTR_ERR ( ack_skb ) ; if ( IS_ERR ( ack_skb ) ) { dev_err ( dev , \"Failed<S2SV_blank>to<S2SV_blank>issue<S2SV_blank>\\'RF<S2SV_blank>Control\\'<S2SV_blank>command:<S2SV_blank>%d\\\\n\" , result ) ; goto error_msg_to_dev ; } result = i2400m_msg_check_status ( wimax_msg_data ( ack_skb ) , strerr , sizeof ( strerr ) ) ; if ( result < 0 ) { dev_err ( dev , \"\\'RF<S2SV_blank>Control\\'<S2SV_blank>(0x%04x)<S2SV_blank>command<S2SV_blank>failed:<S2SV_blank>%d<S2SV_blank>-<S2SV_blank>%s\\\\n\" , I2400M_MT_CMD_RF_CONTROL , result , strerr ) ; goto error_cmd ; } result = wait_event_timeout ( i2400m -> state_wq , i2400m_radio_is ( i2400m , state ) , 5 * HZ ) ; if ( result == 0 ) result = - ETIMEDOUT ; if ( result < 0 ) dev_err ( dev , \"Error<S2SV_blank>waiting<S2SV_blank>for<S2SV_blank>device<S2SV_blank>to<S2SV_blank>toggle<S2SV_blank>RF<S2SV_blank>state:<S2SV_blank>\" \"%d\\\\n\" , result ) ; result = 0 ; error_cmd : <S2SV_StartBug> kfree ( cmd ) ; <S2SV_EndBug> kfree_skb ( ack_skb ) ; error_msg_to_dev : error_alloc : d_fnend ( 4 , dev , \"(wimax_dev<S2SV_blank>%p<S2SV_blank>state<S2SV_blank>%d)<S2SV_blank>=<S2SV_blank>%d\\\\n\" , wimax_dev , state , result ) ; return result ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; error_cmd : kfree_skb ( ack_skb ) ; error_msg_to_dev : error_alloc : d_fnend ( 4 , dev , \"(wimax_dev<S2SV_blank>%p<S2SV_blank>state<S2SV_blank>%d)<S2SV_blank>=<S2SV_blank>%d\\\\n\" , wimax_dev , state , result ) ; <S2SV_ModStart> kfree ( cmd <S2SV_ModEnd> ) ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-11596\n\n```\nCWE-476 static void process_lru_command ( conn * c , token_t * tokens , const size_t ntokens ) { uint32_t pct_hot ; uint32_t pct_warm ; double hot_factor ; int32_t ttl ; double factor ; set_noreply_maybe ( c , tokens , ntokens ) ; if ( strcmp ( tokens [ 1 ] . value , \"tune\" ) == 0 && ntokens >= 7 ) { if ( ! safe_strtoul ( tokens [ 2 ] . value , & pct_hot ) || ! safe_strtoul ( tokens [ 3 ] . value , & pct_warm ) || ! safe_strtod ( tokens [ 4 ] . value , & hot_factor ) || ! safe_strtod ( tokens [ 5 ] . value , & factor ) ) { out_string ( c , \"ERROR\" ) ; } else { if ( pct_hot + pct_warm > 80 ) { out_string ( c , \"ERROR<S2SV_blank>hot<S2SV_blank>and<S2SV_blank>warm<S2SV_blank>pcts<S2SV_blank>must<S2SV_blank>not<S2SV_blank>exceed<S2SV_blank>80\" ) ; } else if ( factor <= 0 || hot_factor <= 0 ) { out_string ( c , \"ERROR<S2SV_blank>hot/warm<S2SV_blank>age<S2SV_blank>factors<S2SV_blank>must<S2SV_blank>be<S2SV_blank>greater<S2SV_blank>than<S2SV_blank>0\" ) ; } else { settings . hot_lru_pct = pct_hot ; settings . warm_lru_pct = pct_warm ; settings . hot_max_factor = hot_factor ; settings . warm_max_factor = factor ; out_string ( c , \"OK\" ) ; } } <S2SV_StartBug> } else if ( strcmp ( tokens [ 1 ] . value , \"mode\" ) == 0 && ntokens >= 3 && <S2SV_EndBug> settings . lru_maintainer_thread ) { if ( strcmp ( tokens [ 2 ] . value , \"flat\" ) == 0 ) { settings . lru_segmented = false ; out_string ( c , \"OK\" ) ; } else if ( strcmp ( tokens [ 2 ] . value , \"segmented\" ) == 0 ) { settings . lru_segmented = true ; out_string ( c , \"OK\" ) ; } else { out_string ( c , \"ERROR\" ) ; } <S2SV_StartBug> } else if ( strcmp ( tokens [ 1 ] . value , \"temp_ttl\" ) == 0 && ntokens >= 3 && <S2SV_EndBug> settings . lru_maintainer_thread ) { if ( ! safe_strtol ( tokens [ 2 ] . value , & ttl ) ) { out_string ( c , \"ERROR\" ) ; } else { if ( ttl < 0 ) { settings . temp_lru = false ; } else { settings . temp_lru = true ; settings . temporary_ttl = ttl ; } out_string ( c , \"OK\" ) ; } } else { out_string ( c , \"ERROR\" ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && ntokens >= 4 <S2SV_ModEnd> && settings . <S2SV_ModStart> && ntokens >= 4 <S2SV_ModEnd> && settings .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 void jas_matrix_divpow2 ( jas_matrix_t * matrix , int n ) { <S2SV_StartBug> int i ; <S2SV_EndBug> int j ; jas_seqent_t * rowstart ; <S2SV_StartBug> int rowstep ; <S2SV_EndBug> jas_seqent_t * data ; if ( jas_matrix_numrows ( matrix ) > 0 && jas_matrix_numcols ( matrix ) > 0 ) { assert ( matrix -> rows_ ) ; rowstep = jas_matrix_rowstep ( matrix ) ; for ( i = matrix -> numrows_ , rowstart = matrix -> rows_ [ 0 ] ; i > 0 ; -- i , rowstart += rowstep ) { for ( j = matrix -> numcols_ , data = rowstart ; j > 0 ; -- j , ++ data ) { * data = ( * data >= 0 ) ? ( ( * data ) >> n ) : ( - ( ( - ( * data ) ) >> n ) ) ; } } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> n ) { jas_matind_t i ; jas_matind_t <S2SV_ModEnd> j ; jas_seqent_t <S2SV_ModStart> * rowstart ; jas_matind_t <S2SV_ModEnd> rowstep ; jas_seqent_t\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4119\n\n```\nCWE-476 rdpCredssp * credssp_new ( freerdp * instance , rdpTransport * transport , rdpSettings * settings ) { rdpCredssp * credssp ; credssp = ( rdpCredssp * ) malloc ( sizeof ( rdpCredssp ) ) ; ZeroMemory ( credssp , sizeof ( rdpCredssp ) ) ; if ( credssp != NULL ) { HKEY hKey ; LONG status ; DWORD dwType ; DWORD dwSize ; credssp -> instance = instance ; credssp -> settings = settings ; credssp -> server = settings -> ServerMode ; credssp -> transport = transport ; credssp -> send_seq_num = 0 ; credssp -> recv_seq_num = 0 ; ZeroMemory ( & credssp -> negoToken , sizeof ( SecBuffer ) ) ; ZeroMemory ( & credssp -> pubKeyAuth , sizeof ( SecBuffer ) ) ; <S2SV_StartBug> ZeroMemory ( & credssp -> authInfo , sizeof ( SecBuffer ) ) ; <S2SV_EndBug> if ( credssp -> server ) { status = RegOpenKeyEx ( HKEY_LOCAL_MACHINE , _T ( \"Software\\\\\\\\FreeRDP\\\\\\\\Server\" ) , 0 , KEY_READ | KEY_WOW64_64KEY , & hKey ) ; if ( status == ERROR_SUCCESS ) { status = RegQueryValueEx ( hKey , _T ( \"SspiModule\" ) , NULL , & dwType , NULL , & dwSize ) ; if ( status == ERROR_SUCCESS ) { credssp -> SspiModule = ( LPTSTR ) malloc ( dwSize + sizeof ( TCHAR ) ) ; status = RegQueryValueEx ( hKey , _T ( \"SspiModule\" ) , NULL , & dwType , ( BYTE * ) credssp -> SspiModule , & dwSize ) ; if ( status == ERROR_SUCCESS ) { _tprintf ( _T ( \"Using<S2SV_blank>SSPI<S2SV_blank>Module:<S2SV_blank>%s\\\\n\" ) , credssp -> SspiModule ) ; RegCloseKey ( hKey ) ; } } } } } return credssp ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( SecBuffer ) ) ; SecInvalidateHandle ( & credssp -> context\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static void copy_fields ( const FieldMatchContext * fm , AVFrame * dst , const AVFrame * src , int field ) { int plane ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && src -> data [ plane ] ; plane ++ ) <S2SV_EndBug> av_image_copy_plane ( dst -> data [ plane ] + field * dst -> linesize [ plane ] , dst -> linesize [ plane ] << 1 , src -> data [ plane ] + field * src -> linesize [ plane ] , src -> linesize [ plane ] << 1 , get_width ( fm , src , plane ) , get_height ( fm , src , plane ) / 2 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> src -> data [ plane ] && src -> linesize\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19242\n\n```\nCWE-476 int sqlite3ExprCodeTarget ( Parse * pParse , Expr * pExpr , int target ) { Vdbe * v = pParse -> pVdbe ; int op ; int inReg = target ; int regFree1 = 0 ; int regFree2 = 0 ; int r1 , r2 ; Expr tempX ; int p5 = 0 ; assert ( target > 0 && target <= pParse -> nMem ) ; if ( v == 0 ) { assert ( pParse -> db -> mallocFailed ) ; return 0 ; } expr_code_doover : if ( pExpr == 0 ) { op = TK_NULL ; } else { op = pExpr -> op ; } switch ( op ) { case TK_AGG_COLUMN : { AggInfo * pAggInfo = pExpr -> pAggInfo ; struct AggInfo_col * pCol = & pAggInfo -> aCol [ pExpr -> iAgg ] ; if ( ! pAggInfo -> directMode ) { assert ( pCol -> iMem > 0 ) ; return pCol -> iMem ; } else if ( pAggInfo -> useSortingIdx ) { sqlite3VdbeAddOp3 ( v , OP_Column , pAggInfo -> sortingIdxPTab , pCol -> iSorterColumn , target ) ; return target ; } } case TK_COLUMN : { int iTab = pExpr -> iTable ; if ( ExprHasProperty ( pExpr , EP_FixedCol ) ) { int iReg = sqlite3ExprCodeTarget ( pParse , pExpr -> pLeft , target ) ; <S2SV_StartBug> int aff = sqlite3TableColumnAffinity ( pExpr -> y . pTab , pExpr -> iColumn ) ; <S2SV_EndBug> if ( aff > SQLITE_AFF_BLOB ) { static const char zAff [ ] = \"B\\\\000C\\\\000D\\\\000E\" ; assert ( SQLITE_AFF_BLOB == 'A' ) ; assert ( SQLITE_AFF_TEXT == 'B' ) ; if ( iReg != target ) { sqlite3VdbeAddOp2 ( v , OP_SCopy , iReg , target ) ; iReg = target ; } sqlite3VdbeAddOp4 ( v , OP_Affinity , iReg , 1 , 0 , & zAff [ ( aff - 'B' ) * 2 ] , P4_STATIC ) ; } return iReg ; } if ( iTab < 0 ) { if ( pParse -> iSelfTab < 0 ) { Column * pCol ; Table * pTab = pExpr -> y . pTab ; int iSrc ; int iCol = pExpr -> iColumn ; assert ( pTab != 0 ) ; assert ( iCol >= XN_ROWID ) ; assert ( iCol < pExpr -> y . pTab -> nCol ) ; if ( iCol < 0 ) { return - 1 - pParse -> iSelfTab ; } pCol = pTab -> aCol + iCol ; testcase ( iCol != sqlite3TableColumnToStorage ( pTab , iCol ) ) ; iSrc = sqlite3TableColumnToStorage ( pTab , iCol ) - pParse -> iSelfTab ; # ifndef SQLITE_OMIT_GENERATED_COLUMNS if ( pCol -> colFlags & COLFLAG_GENERATED ) { if ( pCol -> colFlags & COLFLAG_BUSY ) { sqlite3ErrorMsg ( pParse , \"generated<S2SV_blank>column<S2SV_blank>loop<S2SV_blank>on<S2SV_blank>\\\\\"%s\\\\\"\" , pCol -> zName ) ; return 0 ; } pCol -> colFlags |= COLFLAG_BUSY ; if ( pCol -> colFlags & COLFLAG_NOTAVAIL ) { sqlite3ExprCodeGeneratedColumn ( pParse , pCol , iSrc ) ; } pCol -> colFlags &= ~ ( COLFLAG_BUSY | COLFLAG_NOTAVAIL ) ; return iSrc ; } else # endif if ( pCol -> affinity == SQLITE_AFF_REAL ) { sqlite3VdbeAddOp2 ( v , OP_SCopy , iSrc , target ) ; sqlite3VdbeAddOp1 ( v , OP_RealAffinity , target ) ; return target ; } else { return iSrc ; } } else { iTab = pParse -> iSelfTab - 1 ; } } return sqlite3ExprCodeGetColumn ( pParse , pExpr -> y . pTab , pExpr -> iColumn , iTab , target , pExpr -> op2 ) ; } case TK_INTEGER : { codeInteger ( pParse , pExpr , 0 , target ) ; return target ; } case TK_TRUEFALSE : { sqlite3VdbeAddOp2 ( v , OP_Integer , sqlite3ExprTruthValue ( pExpr ) , target ) ; return target ; } # ifndef SQLITE_OMIT_FLOATING_POINT case TK_FLOAT : { assert ( ! ExprHasProperty ( pExpr , EP_IntValue ) ) ; codeReal ( v , pExpr -> u . zToken , 0 , target ) ; return target ; } # endif case TK_STRING : { assert ( ! ExprHasProperty ( pExpr , EP_IntValue ) ) ; sqlite3VdbeLoadString ( v , target , pExpr -> u . zToken ) ; return target ; } case TK_NULL : { sqlite3VdbeAddOp2 ( v , OP_Null , 0 , target ) ; return target ; } # ifndef SQLITE_OMIT_BLOB_LITERAL case TK_BLOB : { int n ; const char * z ; char * zBlob ; assert ( ! ExprHasProperty ( pExpr , EP_IntValue ) ) ; assert ( pExpr -> u . zToken [ 0 ] == 'x' || pExpr -> u . zToken [ 0 ] == 'X' ) ; assert ( pExpr -> u . zToken [ 1 ] == '\\\\'' ) ; z = & pExpr -> u . zToken [ 2 ] ; n = sqlite3Strlen30 ( z ) - 1 ; assert ( z [ n ] == '\\\\'' ) ; zBlob = sqlite3HexToBlob ( sqlite3VdbeDb ( v ) , z , n ) ; sqlite3VdbeAddOp4 ( v , OP_Blob , n / 2 , target , 0 , zBlob , P4_DYNAMIC ) ; return target ; } # endif case TK_VARIABLE : { assert ( ! ExprHasProperty ( pExpr , EP_IntValue ) ) ; assert ( pExpr -> u . zToken != 0 ) ; assert ( pExpr -> u . zToken [ 0 ] != 0 ) ; sqlite3VdbeAddOp2 ( v , OP_Variable , pExpr -> iColumn , target ) ; if ( pExpr -> u . zToken [ 1 ] != 0 ) { const char * z = sqlite3VListNumToName ( pParse -> pVList , pExpr -> iColumn ) ; assert ( pExpr -> u . zToken [ 0 ] == '?' || strcmp ( pExpr -> u . zToken , z ) == 0 ) ; pParse -> pVList [ 0 ] = 0 ; sqlite3VdbeAppendP4 ( v , ( char * ) z , P4_STATIC ) ; } return target ; } case TK_REGISTER : { return pExpr -> iTable ; } # ifndef SQLITE_OMIT_CAST case TK_CAST : { inReg = sqlite3ExprCodeTarget ( pParse , pExpr -> pLeft , target ) ; if ( inReg != target ) { sqlite3VdbeAddOp2 ( v , OP_SCopy , inReg , target ) ; inReg = target ; } sqlite3VdbeAddOp2 ( v , OP_Cast , target , sqlite3AffinityType ( pExpr -> u . zToken , 0 ) ) ; return inReg ; } # endif case TK_IS : case TK_ISNOT : op = ( op == TK_IS ) ? TK_EQ : TK_NE ; p5 = SQLITE_NULLEQ ; case TK_LT : case TK_LE : case TK_GT : case TK_GE : case TK_NE : case TK_EQ : { Expr * pLeft = pExpr -> pLeft ; if ( sqlite3ExprIsVector ( pLeft ) ) { codeVectorCompare ( pParse , pExpr , target , op , p5 ) ; } else { r1 = sqlite3ExprCodeTemp ( pParse , pLeft , & regFree1 ) ; r2 = sqlite3ExprCodeTemp ( pParse , pExpr -> pRight , & regFree2 ) ; codeCompare ( pParse , pLeft , pExpr -> pRight , op , r1 , r2 , inReg , SQLITE_STOREP2 | p5 , ExprHasProperty ( pExpr , EP_Commuted ) ) ; assert ( TK_LT == OP_Lt ) ; testcase ( op == OP_Lt ) ; VdbeCoverageIf ( v , op == OP_Lt ) ; assert ( TK_LE == OP_Le ) ; testcase ( op == OP_Le ) ; VdbeCoverageIf ( v , op == OP_Le ) ; assert ( TK_GT == OP_Gt ) ; testcase ( op == OP_Gt ) ; VdbeCoverageIf ( v , op == OP_Gt ) ; assert ( TK_GE == OP_Ge ) ; testcase ( op == OP_Ge ) ; VdbeCoverageIf ( v , op == OP_Ge ) ; assert ( TK_EQ == OP_Eq ) ; testcase ( op == OP_Eq ) ; VdbeCoverageIf ( v , op == OP_Eq ) ; assert ( TK_NE == OP_Ne ) ; testcase ( op == OP_Ne ) ; VdbeCoverageIf ( v , op == OP_Ne ) ; testcase ( regFree1 == 0 ) ; testcase ( regFree2 == 0 ) ; } break ; } case TK_AND : case TK_OR : case TK_PLUS : case TK_STAR : case TK_MINUS : case TK_REM : case TK_BITAND : case TK_BITOR : case TK_SLASH : case TK_LSHIFT : case TK_RSHIFT : case TK_CONCAT : { assert ( TK_AND == OP_And ) ; testcase ( op == TK_AND ) ; assert ( TK_OR == OP_Or ) ; testcase ( op == TK_OR ) ; assert ( TK_PLUS == OP_Add ) ; testcase ( op == TK_PLUS ) ; assert ( TK_MINUS == OP_Subtract ) ; testcase ( op == TK_MINUS ) ; assert ( TK_REM == OP_Remainder ) ; testcase ( op == TK_REM ) ; assert ( TK_BITAND == OP_BitAnd ) ; testcase ( op == TK_BITAND ) ; assert ( TK_BITOR == OP_BitOr ) ; testcase ( op == TK_BITOR ) ; assert ( TK_SLASH == OP_Divide ) ; testcase ( op == TK_SLASH ) ; assert ( TK_LSHIFT == OP_ShiftLeft ) ; testcase ( op == TK_LSHIFT ) ; assert ( TK_RSHIFT == OP_ShiftRight ) ; testcase ( op == TK_RSHIFT ) ; assert ( TK_CONCAT == OP_Concat ) ; testcase ( op == TK_CONCAT ) ; r1 = sqlite3ExprCodeTemp ( pParse , pExpr -> pLeft , & regFree1 ) ; r2 = sqlite3ExprCodeTemp ( pParse , pExpr -> pRight , & regFree2 ) ; sqlite3VdbeAddOp3 ( v , op , r2 , r1 , target ) ; testcase ( regFree1 == 0 ) ; testcase ( regFree2 == 0 ) ; break ; } case TK_UMINUS : { Expr * pLeft = pExpr -> pLeft ; assert ( pLeft ) ; if ( pLeft -> op == TK_INTEGER ) { codeInteger ( pParse , pLeft , 1 , target ) ; return target ; # ifndef SQLITE_OMIT_FLOATING_POINT } else if ( pLeft -> op == TK_FLOAT ) { assert ( ! ExprHasProperty ( pExpr , EP_IntValue ) ) ; codeReal ( v , pLeft -> u . zToken , 1 , target ) ; return target ; # endif } else { tempX . op = TK_INTEGER ; tempX . flags = EP_IntValue | EP_TokenOnly ; tempX . u . iValue = 0 ; r1 = sqlite3ExprCodeTemp ( pParse , & tempX , & regFree1 ) ; r2 = sqlite3ExprCodeTemp ( pParse , pExpr -> pLeft , & regFree2 ) ; sqlite3VdbeAddOp3 ( v , OP_Subtract , r2 , r1 , target ) ; testcase ( regFree2 == 0 ) ; } break ; } case TK_BITNOT : case TK_NOT : { assert ( TK_BITNOT == OP_BitNot ) ; testcase ( op == TK_BITNOT ) ; assert ( TK_NOT == OP_Not ) ; testcase ( op == TK_NOT ) ; r1 = sqlite3ExprCodeTemp ( pParse , pExpr -> pLeft , & regFree1 ) ; testcase ( regFree1 == 0 ) ; sqlite3VdbeAddOp2 ( v , op , r1 , inReg ) ; break ; } case TK_TRUTH : { int isTrue ; int bNormal ; r1 = sqlite3ExprCodeTemp ( pParse , pExpr -> pLeft , & regFree1 ) ; testcase ( regFree1 == 0 ) ; isTrue = sqlite3ExprTruthValue ( pExpr -> pRight ) ; bNormal = pExpr -> op2 == TK_IS ; testcase ( isTrue && bNormal ) ; testcase ( ! isTrue && bNormal ) ; sqlite3VdbeAddOp4Int ( v , OP_IsTrue , r1 , inReg , ! isTrue , isTrue ^ bNormal ) ; break ; } case TK_ISNULL : case TK_NOTNULL : { int addr ; assert ( TK_ISNULL == OP_IsNull ) ; testcase ( op == TK_ISNULL ) ; assert ( TK_NOTNULL == OP_NotNull ) ; testcase ( op == TK_NOTNULL ) ; sqlite3VdbeAddOp2 ( v , OP_Integer , 1 , target ) ; r1 = sqlite3ExprCodeTemp ( pParse , pExpr -> pLeft , & regFree1 ) ; testcase ( regFree1 == 0 ) ; addr = sqlite3VdbeAddOp1 ( v , op , r1 ) ; VdbeCoverageIf ( v , op == TK_ISNULL ) ; VdbeCoverageIf ( v , op == TK_NOTNULL ) ; sqlite3VdbeAddOp2 ( v , OP_Integer , 0 , target ) ; sqlite3VdbeJumpHere ( v , addr ) ; break ; } case TK_AGG_FUNCTION : { AggInfo * pInfo = pExpr -> pAggInfo ; if ( pInfo == 0 ) { assert ( ! ExprHasProperty ( pExpr , EP_IntValue ) ) ; sqlite3ErrorMsg ( pParse , \"misuse<S2SV_blank>of<S2SV_blank>aggregate:<S2SV_blank>%s()\" , pExpr -> u . zToken ) ; } else { return pInfo -> aFunc [ pExpr -> iAgg ] . iMem ; } break ; } case TK_FUNCTION : { ExprList * pFarg ; int nFarg ; FuncDef * pDef ; const char * zId ; u32 constMask = 0 ; int i ; sqlite3 * db = pParse -> db ; u8 enc = ENC ( db ) ; CollSeq * pColl = 0 ; # ifndef SQLITE_OMIT_WINDOWFUNC if ( ExprHasProperty ( pExpr , EP_WinFunc ) ) { return pExpr -> y . pWin -> regResult ; } # endif if ( ConstFactorOk ( pParse ) && sqlite3ExprIsConstantNotJoin ( pExpr ) ) { return sqlite3ExprCodeAtInit ( pParse , pExpr , - 1 ) ; } assert ( ! ExprHasProperty ( pExpr , EP_xIsSelect ) ) ; if ( ExprHasProperty ( pExpr , EP_TokenOnly ) ) { pFarg = 0 ; } else { pFarg = pExpr -> x . pList ; } nFarg = pFarg ? pFarg -> nExpr : 0 ; assert ( ! ExprHasProperty ( pExpr , EP_IntValue ) ) ; zId = pExpr -> u . zToken ; pDef = sqlite3FindFunction ( db , zId , nFarg , enc , 0 ) ; # ifdef SQLITE_ENABLE_UNKNOWN_SQL_FUNCTION if ( pDef == 0 && pParse -> explain ) { pDef = sqlite3FindFunction ( db , \"unknown\" , nFarg , enc , 0 ) ; } # endif if ( pDef == 0 || pDef -> xFinalize != 0 ) { sqlite3ErrorMsg ( pParse , \"unknown<S2SV_blank>function:<S2SV_blank>%s()\" , zId ) ; break ; } if ( pDef -> funcFlags & SQLITE_FUNC_COALESCE ) { int endCoalesce = sqlite3VdbeMakeLabel ( pParse ) ; assert ( nFarg >= 2 ) ; sqlite3ExprCode ( pParse , pFarg -> a [ 0 ] . pExpr , target ) ; for ( i = 1 ; i < nFarg ; i ++ ) { sqlite3VdbeAddOp2 ( v , OP_NotNull , target , endCoalesce ) ; VdbeCoverage ( v ) ; sqlite3ExprCode ( pParse , pFarg -> a [ i ] . pExpr , target ) ; } sqlite3VdbeResolveLabel ( v , endCoalesce ) ; break ; } if ( pDef -> funcFlags & SQLITE_FUNC_UNLIKELY ) { assert ( nFarg >= 1 ) ; return sqlite3ExprCodeTarget ( pParse , pFarg -> a [ 0 ] . pExpr , target ) ; } # ifdef SQLITE_DEBUG if ( pDef -> funcFlags & SQLITE_FUNC_AFFINITY ) { const char * azAff [ ] = { \"blob\" , \"text\" , \"numeric\" , \"integer\" , \"real\" } ; char aff ; assert ( nFarg == 1 ) ; aff = sqlite3ExprAffinity ( pFarg -> a [ 0 ] . pExpr ) ; sqlite3VdbeLoadString ( v , target , ( aff <= SQLITE_AFF_NONE ) ? \"none\" : azAff [ aff - SQLITE_AFF_BLOB ] ) ; return target ; } # endif for ( i = 0 ; i < nFarg ; i ++ ) { if ( i < 32 && sqlite3ExprIsConstant ( pFarg -> a [ i ] . pExpr ) ) { testcase ( i == 31 ) ; constMask |= MASKBIT32 ( i ) ; } if ( ( pDef -> funcFlags & SQLITE_FUNC_NEEDCOLL ) != 0 && ! pColl ) { pColl = sqlite3ExprCollSeq ( pParse , pFarg -> a [ i ] . pExpr ) ; } } if ( pFarg ) { if ( constMask ) { r1 = pParse -> nMem + 1 ; pParse -> nMem += nFarg ; } else { r1 = sqlite3GetTempRange ( pParse , nFarg ) ; } if ( ( pDef -> funcFlags & ( SQLITE_FUNC_LENGTH | SQLITE_FUNC_TYPEOF ) ) != 0 ) { u8 exprOp ; assert ( nFarg == 1 ) ; assert ( pFarg -> a [ 0 ] . pExpr != 0 ) ; exprOp = pFarg -> a [ 0 ] . pExpr -> op ; if ( exprOp == TK_COLUMN || exprOp == TK_AGG_COLUMN ) { assert ( SQLITE_FUNC_LENGTH == OPFLAG_LENGTHARG ) ; assert ( SQLITE_FUNC_TYPEOF == OPFLAG_TYPEOFARG ) ; testcase ( pDef -> funcFlags & OPFLAG_LENGTHARG ) ; pFarg -> a [ 0 ] . pExpr -> op2 = pDef -> funcFlags & ( OPFLAG_LENGTHARG | OPFLAG_TYPEOFARG ) ; } } sqlite3ExprCodeExprList ( pParse , pFarg , r1 , 0 , SQLITE_ECEL_DUP | SQLITE_ECEL_FACTOR ) ; } else { r1 = 0 ; } # ifndef SQLITE_OMIT_VIRTUALTABLE if ( nFarg >= 2 && ExprHasProperty ( pExpr , EP_InfixFunc ) ) { pDef = sqlite3VtabOverloadFunction ( db , pDef , nFarg , pFarg -> a [ 1 ] . pExpr ) ; } else if ( nFarg > 0 ) { pDef = sqlite3VtabOverloadFunction ( db , pDef , nFarg , pFarg -> a [ 0 ] . pExpr ) ; } # endif if ( pDef -> funcFlags & SQLITE_FUNC_NEEDCOLL ) { if ( ! pColl ) pColl = db -> pDfltColl ; sqlite3VdbeAddOp4 ( v , OP_CollSeq , 0 , 0 , 0 , ( char * ) pColl , P4_COLLSEQ ) ; } # ifdef SQLITE_ENABLE_OFFSET_SQL_FUNC if ( pDef -> funcFlags & SQLITE_FUNC_OFFSET ) { Expr * pArg = pFarg -> a [ 0 ] . pExpr ; if ( pArg -> op == TK_COLUMN ) { sqlite3VdbeAddOp3 ( v , OP_Offset , pArg -> iTable , pArg -> iColumn , target ) ; } else { sqlite3VdbeAddOp2 ( v , OP_Null , 0 , target ) ; } } else # endif { sqlite3VdbeAddFunctionCall ( pParse , constMask , r1 , target , nFarg , pDef , pExpr -> op2 ) ; } if ( nFarg && constMask == 0 ) { sqlite3ReleaseTempRange ( pParse , r1 , nFarg ) ; } return target ; } # ifndef SQLITE_OMIT_SUBQUERY case TK_EXISTS : case TK_SELECT : { int nCol ; testcase ( op == TK_EXISTS ) ; testcase ( op == TK_SELECT ) ; if ( op == TK_SELECT && ( nCol = pExpr -> x . pSelect -> pEList -> nExpr ) != 1 ) { sqlite3SubselectError ( pParse , nCol , 1 ) ; } else { return sqlite3CodeSubselect ( pParse , pExpr ) ; } break ; } case TK_SELECT_COLUMN : { int n ; if ( pExpr -> pLeft -> iTable == 0 ) { pExpr -> pLeft -> iTable = sqlite3CodeSubselect ( pParse , pExpr -> pLeft ) ; } assert ( pExpr -> iTable == 0 || pExpr -> pLeft -> op == TK_SELECT ) ; if ( pExpr -> iTable != 0 && pExpr -> iTable != ( n = sqlite3ExprVectorSize ( pExpr -> pLeft ) ) ) { sqlite3ErrorMsg ( pParse , \"%d<S2SV_blank>columns<S2SV_blank>assigned<S2SV_blank>%d<S2SV_blank>values\" , pExpr -> iTable , n ) ; } return pExpr -> pLeft -> iTable + pExpr -> iColumn ; } case TK_IN : { int destIfFalse = sqlite3VdbeMakeLabel ( pParse ) ; int destIfNull = sqlite3VdbeMakeLabel ( pParse ) ; sqlite3VdbeAddOp2 ( v , OP_Null , 0 , target ) ; sqlite3ExprCodeIN ( pParse , pExpr , destIfFalse , destIfNull ) ; sqlite3VdbeAddOp2 ( v , OP_Integer , 1 , target ) ; sqlite3VdbeResolveLabel ( v , destIfFalse ) ; sqlite3VdbeAddOp2 ( v , OP_AddImm , target , 0 ) ; sqlite3VdbeResolveLabel ( v , destIfNull ) ; return target ; } # endif case TK_BETWEEN : { exprCodeBetween ( pParse , pExpr , target , 0 , 0 ) ; return target ; } case TK_SPAN : case TK_COLLATE : case TK_UPLUS : { pExpr = pExpr -> pLeft ; goto expr_code_doover ; } case TK_TRIGGER : { Table * pTab = pExpr -> y . pTab ; int iCol = pExpr -> iColumn ; int p1 = pExpr -> iTable * ( pTab -> nCol + 1 ) + 1 + ( iCol >= 0 ? sqlite3TableColumnToStorage ( pTab , iCol ) : - 1 ) ; assert ( pExpr -> iTable == 0 || pExpr -> iTable == 1 ) ; assert ( iCol >= - 1 && iCol < pTab -> nCol ) ; assert ( pTab -> iPKey < 0 || iCol != pTab -> iPKey ) ; assert ( p1 >= 0 && p1 < ( pTab -> nCol * 2 + 2 ) ) ; sqlite3VdbeAddOp2 ( v , OP_Param , p1 , target ) ; VdbeComment ( ( v , \"r[%d]=%s.%s\" , target , ( pExpr -> iTable ? \"new\" : \"old\" ) , ( pExpr -> iColumn < 0 ? \"rowid\" : pExpr -> y . pTab -> aCol [ iCol ] . zName ) ) ) ; # ifndef SQLITE_OMIT_FLOATING_POINT if ( iCol >= 0 && pTab -> aCol [ iCol ] . affinity == SQLITE_AFF_REAL ) { sqlite3VdbeAddOp1 ( v , OP_RealAffinity , target ) ; } # endif break ; } case TK_VECTOR : { sqlite3ErrorMsg ( pParse , \"row<S2SV_blank>value<S2SV_blank>misused\" ) ; break ; } case TK_IF_NULL_ROW : { int addrINR ; u8 okConstFactor = pParse -> okConstFactor ; addrINR = sqlite3VdbeAddOp1 ( v , OP_IfNullRow , pExpr -> iTable ) ; pParse -> okConstFactor = 0 ; inReg = sqlite3ExprCodeTarget ( pParse , pExpr -> pLeft , target ) ; pParse -> okConstFactor = okConstFactor ; sqlite3VdbeJumpHere ( v , addrINR ) ; sqlite3VdbeChangeP3 ( v , addrINR , inReg ) ; break ; } default : assert ( op == TK_CASE ) ; { int endLabel ; int nextCase ; int nExpr ; int i ; ExprList * pEList ; struct ExprList_item * aListelem ; Expr opCompare ; Expr * pX ; Expr * pTest = 0 ; Expr * pDel = 0 ; sqlite3 * db = pParse -> db ; assert ( ! ExprHasProperty ( pExpr , EP_xIsSelect ) && pExpr -> x . pList ) ; assert ( pExpr -> x . pList -> nExpr > 0 ) ; pEList = pExpr -> x . pList ; aListelem = pEList -> a ; nExpr = pEList -> nExpr ; endLabel = sqlite3VdbeMakeLabel ( pParse ) ; if ( ( pX = pExpr -> pLeft ) != 0 ) { pDel = sqlite3ExprDup ( db , pX , 0 ) ; if ( db -> mallocFailed ) { sqlite3ExprDelete ( db , pDel ) ; break ; } testcase ( pX -> op == TK_COLUMN ) ; exprToRegister ( pDel , exprCodeVector ( pParse , pDel , & regFree1 ) ) ; testcase ( regFree1 == 0 ) ; memset ( & opCompare , 0 , sizeof ( opCompare ) ) ; opCompare . op = TK_EQ ; opCompare . pLeft = pDel ; pTest = & opCompare ; regFree1 = 0 ; } for ( i = 0 ; i < nExpr - 1 ; i = i + 2 ) { if ( pX ) { assert ( pTest != 0 ) ; opCompare . pRight = aListelem [ i ] . pExpr ; } else { pTest = aListelem [ i ] . pExpr ; } nextCase = sqlite3VdbeMakeLabel ( pParse ) ; testcase ( pTest -> op == TK_COLUMN ) ; sqlite3ExprIfFalse ( pParse , pTest , nextCase , SQLITE_JUMPIFNULL ) ; testcase ( aListelem [ i + 1 ] . pExpr -> op == TK_COLUMN ) ; sqlite3ExprCode ( pParse , aListelem [ i + 1 ] . pExpr , target ) ; sqlite3VdbeGoto ( v , endLabel ) ; sqlite3VdbeResolveLabel ( v , nextCase ) ; } if ( ( nExpr & 1 ) != 0 ) { sqlite3ExprCode ( pParse , pEList -> a [ nExpr - 1 ] . pExpr , target ) ; } else { sqlite3VdbeAddOp2 ( v , OP_Null , 0 , target ) ; } sqlite3ExprDelete ( db , pDel ) ; sqlite3VdbeResolveLabel ( v , endLabel ) ; break ; } # ifndef SQLITE_OMIT_TRIGGER case TK_RAISE : { assert ( pExpr -> affExpr == OE_Rollback || pExpr -> affExpr == OE_Abort || pExpr -> affExpr == OE_Fail || pExpr -> affExpr == OE_Ignore ) ; if ( ! pParse -> pTriggerTab ) { sqlite3ErrorMsg ( pParse , \"RAISE()<S2SV_blank>may<S2SV_blank>only<S2SV_blank>be<S2SV_blank>used<S2SV_blank>within<S2SV_blank>a<S2SV_blank>trigger-program\" ) ; return 0 ; } if ( pExpr -> affExpr == OE_Abort ) { sqlite3MayAbort ( pParse ) ; } assert ( ! ExprHasProperty ( pExpr , EP_IntValue ) ) ; if ( pExpr -> affExpr == OE_Ignore ) { sqlite3VdbeAddOp4 ( v , OP_Halt , SQLITE_OK , OE_Ignore , 0 , pExpr -> u . zToken , 0 ) ; VdbeCoverage ( v ) ; } else { sqlite3HaltConstraint ( pParse , SQLITE_CONSTRAINT_TRIGGER , pExpr -> affExpr , pExpr -> u . zToken , 0 , 0 ) ; } break ; } # endif } sqlite3ReleaseTempReg ( pParse , regFree1 ) ; sqlite3ReleaseTempReg ( pParse , regFree2 ) ; return inReg ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int aff ; if ( pExpr -> y . pTab ) { aff <S2SV_ModStart> iColumn ) ; } else { aff = pExpr -> affExpr ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 void inet_sock_destruct ( struct sock * sk ) { struct inet_sock * inet = inet_sk ( sk ) ; __skb_queue_purge ( & sk -> sk_receive_queue ) ; __skb_queue_purge ( & sk -> sk_error_queue ) ; sk_mem_reclaim ( sk ) ; if ( sk -> sk_type == SOCK_STREAM && sk -> sk_state != TCP_CLOSE ) { pr_err ( \"Attempt<S2SV_blank>to<S2SV_blank>release<S2SV_blank>TCP<S2SV_blank>socket<S2SV_blank>in<S2SV_blank>state<S2SV_blank>%d<S2SV_blank>%p\\\\n\" , sk -> sk_state , sk ) ; return ; } if ( ! sock_flag ( sk , SOCK_DEAD ) ) { pr_err ( \"Attempt<S2SV_blank>to<S2SV_blank>release<S2SV_blank>alive<S2SV_blank>inet<S2SV_blank>socket<S2SV_blank>%p\\\\n\" , sk ) ; return ; } WARN_ON ( atomic_read ( & sk -> sk_rmem_alloc ) ) ; WARN_ON ( atomic_read ( & sk -> sk_wmem_alloc ) ) ; WARN_ON ( sk -> sk_wmem_queued ) ; WARN_ON ( sk -> sk_forward_alloc ) ; <S2SV_StartBug> kfree ( inet -> opt ) ; <S2SV_EndBug> dst_release ( rcu_dereference_check ( sk -> sk_dst_cache , 1 ) ) ; sk_refcnt_debug_dec ( sk ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; kfree ( rcu_dereference_protected ( inet -> inet_opt , 1 ) <S2SV_ModEnd> ) ; dst_release\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 static identifier new_identifier ( const char * n , struct compiling * c ) { PyObject * id = PyUnicode_DecodeUTF8 ( n , strlen ( n ) , NULL ) ; if ( ! id ) return NULL ; assert ( PyUnicode_IS_READY ( id ) ) ; if ( ! PyUnicode_IS_ASCII ( id ) ) { PyObject * id2 ; <S2SV_StartBug> if ( ! c -> c_normalize && ! init_normalization ( c ) ) { <S2SV_EndBug> Py_DECREF ( id ) ; return NULL ; } <S2SV_StartBug> PyTuple_SET_ITEM ( c -> c_normalize_args , 1 , id ) ; <S2SV_EndBug> <S2SV_StartBug> id2 = PyObject_Call ( c -> c_normalize , c -> c_normalize_args , NULL ) ; <S2SV_EndBug> Py_DECREF ( id ) ; if ( ! id2 ) return NULL ; id = id2 ; } PyUnicode_InternInPlace ( & id ) ; if ( PyArena_AddPyObject ( c -> c_arena , id ) < 0 ) { Py_DECREF ( id ) ; return NULL ; } return id ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * id2 ; PyObject * form ; PyObject * args [ 2 ] ; _Py_IDENTIFIER ( NFKC ) ; <S2SV_ModStart> NULL ; } form = _PyUnicode_FromId ( & PyId_NFKC ) ; if ( form == NULL ) { Py_DECREF ( id ) ; return NULL ; } args [ 0 ] = form ; args [ 1 ] = id ; id2 = _PyObject_FastCall <S2SV_ModEnd> ( c -> <S2SV_ModStart> -> c_normalize , args , 2 ) ; Py_DECREF ( id ) ; if ( ! id2 ) return NULL ; if ( ! PyUnicode_Check ( id2 ) ) { PyErr_Format ( PyExc_TypeError , \"unicodedata.normalize()<S2SV_blank>must<S2SV_blank>return<S2SV_blank>a<S2SV_blank>string,<S2SV_blank>not<S2SV_blank>\" \"%.200s\" , Py_TYPE ( id2 ) -> tp_name ) ; Py_DECREF ( id2 ) ; return NULL ; } <S2SV_ModEnd> id = id2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11721\n\n```\nCWE-119 void Huff_Compress ( msg_t * mbuf , int offset ) { int i , ch , size ; byte seq [ 65536 ] ; byte * buffer ; huff_t huff ; size = mbuf -> cursize - offset ; buffer = mbuf -> data + + offset ; if ( size <= 0 ) { return ; } Com_Memset ( & huff , 0 , sizeof ( huff_t ) ) ; huff . tree = huff . lhead = huff . loc [ NYT ] = & ( huff . nodeList [ huff . blocNode ++ ] ) ; huff . tree -> symbol = NYT ; huff . tree -> weight = 0 ; huff . lhead -> next = huff . lhead -> prev = NULL ; huff . tree -> parent = huff . tree -> left = huff . tree -> right = NULL ; seq [ 0 ] = ( size >> 8 ) ; seq [ 1 ] = size & 0xff ; bloc = 16 ; for ( i = 0 ; i < size ; i ++ ) { ch = buffer [ i ] ; <S2SV_StartBug> Huff_transmit ( & huff , ch , seq ) ; <S2SV_EndBug> Huff_addRef ( & huff , ( byte ) ch ) ; } bloc += 8 ; mbuf -> cursize = ( bloc >> 3 ) + offset ; Com_Memcpy ( mbuf -> data + offset , seq , ( bloc >> 3 ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ch , seq , size << 3\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-20892\n\n```\nCWE-415 static netsnmp_pdu * _clone_pdu_header ( netsnmp_pdu * pdu ) { netsnmp_pdu * newpdu ; struct snmp_secmod_def * sptr ; int ret ; if ( ! pdu ) return NULL ; newpdu = ( netsnmp_pdu * ) malloc ( sizeof ( netsnmp_pdu ) ) ; if ( ! newpdu ) return NULL ; memmove ( newpdu , pdu , sizeof ( netsnmp_pdu ) ) ; newpdu -> variables = NULL ; newpdu -> enterprise = NULL ; newpdu -> community = NULL ; newpdu -> securityEngineID = NULL ; newpdu -> securityName = NULL ; newpdu -> contextEngineID = NULL ; newpdu -> contextName = NULL ; newpdu -> transport_data = NULL ; if ( snmp_clone_mem ( ( void * * ) & newpdu -> enterprise , pdu -> enterprise , sizeof ( oid ) * pdu -> enterprise_length ) || snmp_clone_mem ( ( void * * ) & newpdu -> community , pdu -> community , pdu -> community_len ) || snmp_clone_mem ( ( void * * ) & newpdu -> contextEngineID , pdu -> contextEngineID , pdu -> contextEngineIDLen ) || snmp_clone_mem ( ( void * * ) & newpdu -> securityEngineID , pdu -> securityEngineID , pdu -> securityEngineIDLen ) || snmp_clone_mem ( ( void * * ) & newpdu -> contextName , pdu -> contextName , pdu -> contextNameLen ) || snmp_clone_mem ( ( void * * ) & newpdu -> securityName , pdu -> securityName , pdu -> securityNameLen ) || snmp_clone_mem ( ( void * * ) & newpdu -> transport_data , pdu -> transport_data , pdu -> transport_data_length ) ) { snmp_free_pdu ( newpdu ) ; return NULL ; } <S2SV_StartBug> if ( pdu -> securityStateRef && <S2SV_EndBug> pdu -> command == SNMP_MSG_TRAP2 ) { netsnmp_assert ( pdu -> securityModel == SNMP_DEFAULT_SECMODEL ) ; ret = usm_clone_usmStateReference ( ( struct usmStateReference * ) pdu -> securityStateRef , ( struct usmStateReference * * ) & newpdu -> securityStateRef ) ; if ( ret ) { snmp_free_pdu ( newpdu ) ; return NULL ; } <S2SV_StartBug> } <S2SV_EndBug> if ( ( sptr = find_sec_mod ( newpdu -> securityModel ) ) != NULL && sptr -> pdu_clone != NULL ) { ( * sptr -> pdu_clone ) ( pdu , newpdu ) ; } return newpdu ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } sptr = find_sec_mod ( newpdu -> securityModel ) ; if ( sptr && sptr -> pdu_clone ) { ret = sptr -> pdu_clone ( pdu , newpdu <S2SV_ModEnd> ) ; if <S2SV_ModStart> NULL ; } <S2SV_ModEnd> } return newpdu\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-254(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-0824\n\n```\nCWE-254 UWORD16 impeg2d_get_mb_addr_incr ( stream_t * ps_stream ) { UWORD16 u2_mb_addr_incr = 0 ; <S2SV_StartBug> while ( impeg2d_bit_stream_nxt ( ps_stream , MB_ESCAPE_CODE_LEN ) == MB_ESCAPE_CODE ) <S2SV_EndBug> { impeg2d_bit_stream_flush ( ps_stream , MB_ESCAPE_CODE_LEN ) ; u2_mb_addr_incr += 33 ; } u2_mb_addr_incr += impeg2d_dec_vld_symbol ( ps_stream , gai2_impeg2d_mb_addr_incr , MB_ADDR_INCR_LEN ) + MB_ADDR_INCR_OFFSET ; return ( u2_mb_addr_incr ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) == MB_ESCAPE_CODE && ps_stream -> u4_offset < ps_stream -> u4_max_offset\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8062\n\n```\nCWE-119 static int tt_s2_4600_frontend_attach ( struct dvb_usb_adapter * adap ) { struct dvb_usb_device * d = adap -> dev ; <S2SV_StartBug> struct dw2102_state * state = d -> priv ; <S2SV_EndBug> u8 obuf [ 3 ] = { 0xe , 0x80 , 0 } ; u8 ibuf [ ] = { 0 } ; struct i2c_adapter * i2c_adapter ; struct i2c_client * client ; struct i2c_board_info board_info ; struct m88ds3103_platform_data m88ds3103_pdata = { } ; struct ts2020_config ts2020_config = { } ; <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x02 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; msleep ( 300 ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x83 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 0 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0xe ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 1 ] = 0x83 ; <S2SV_EndBug> <S2SV_StartBug> obuf [ 2 ] = 1 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 3 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> err ( \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_StartBug> obuf [ 0 ] = 0x51 ; <S2SV_EndBug> <S2SV_StartBug> if ( dvb_usb_generic_rw ( d , obuf , 1 , ibuf , 1 , 0 ) < 0 ) <S2SV_EndBug> <S2SV_StartBug> err ( \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; <S2SV_EndBug> m88ds3103_pdata . clk = 27000000 ; m88ds3103_pdata . i2c_wr_max = 33 ; m88ds3103_pdata . ts_mode = M88DS3103_TS_CI ; m88ds3103_pdata . ts_clk = 16000 ; m88ds3103_pdata . ts_clk_pol = 0 ; m88ds3103_pdata . spec_inv = 0 ; m88ds3103_pdata . agc = 0x99 ; m88ds3103_pdata . agc_inv = 0 ; m88ds3103_pdata . clk_out = M88DS3103_CLOCK_OUT_ENABLED ; m88ds3103_pdata . envelope_mode = 0 ; m88ds3103_pdata . lnb_hv_pol = 1 ; m88ds3103_pdata . lnb_en_pol = 0 ; memset ( & board_info , 0 , sizeof ( board_info ) ) ; strlcpy ( board_info . type , \"m88ds3103\" , I2C_NAME_SIZE ) ; board_info . addr = 0x68 ; board_info . platform_data = & m88ds3103_pdata ; request_module ( \"m88ds3103\" ) ; client = i2c_new_device ( & d -> i2c_adap , & board_info ) ; if ( client == NULL || client -> dev . driver == NULL ) return - ENODEV ; if ( ! try_module_get ( client -> dev . driver -> owner ) ) { i2c_unregister_device ( client ) ; return - ENODEV ; } adap -> fe_adap [ 0 ] . fe = m88ds3103_pdata . get_dvb_frontend ( client ) ; i2c_adapter = m88ds3103_pdata . get_i2c_adapter ( client ) ; state -> i2c_client_demod = client ; ts2020_config . fe = adap -> fe_adap [ 0 ] . fe ; memset ( & board_info , 0 , sizeof ( board_info ) ) ; strlcpy ( board_info . type , \"ts2022\" , I2C_NAME_SIZE ) ; board_info . addr = 0x60 ; board_info . platform_data = & ts2020_config ; request_module ( \"ts2020\" ) ; client = i2c_new_device ( i2c_adapter , & board_info ) ; if ( client == NULL || client -> dev . driver == NULL ) { dvb_frontend_detach ( adap -> fe_adap [ 0 ] . fe ) ; return - ENODEV ; } if ( ! try_module_get ( client -> dev . driver -> owner ) ) { i2c_unregister_device ( client ) ; dvb_frontend_detach ( adap -> fe_adap [ 0 ] . fe ) ; return - ENODEV ; } adap -> fe_adap [ 0 ] . fe -> ops . read_signal_strength = adap -> fe_adap [ 0 ] . fe -> ops . tuner_ops . get_rf_strength ; state -> i2c_client_tuner = client ; state -> fe_read_status = adap -> fe_adap [ 0 ] . fe -> ops . read_status ; adap -> fe_adap [ 0 ] . fe -> ops . read_status = tt_s2_4600_read_status ; state -> last_lock = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> d -> priv <S2SV_ModEnd> ; struct i2c_adapter <S2SV_ModStart> { } ; mutex_lock ( & d -> data_mutex ) ; state -> data [ 0 ] = 0xe ; state -> data [ 1 ] = 0x80 ; state -> data [ 2 ] = 0x0 ; <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 0x02 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> 300 ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 0x83 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> = 0xe ; state -> data <S2SV_ModEnd> [ 1 ] <S2SV_ModStart> = 0x83 ; state -> data <S2SV_ModEnd> [ 2 ] <S2SV_ModStart> ( d , state -> data <S2SV_ModEnd> , 3 , <S2SV_ModStart> , 3 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> \"command<S2SV_blank>0x0e<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; state -> data <S2SV_ModEnd> [ 0 ] <S2SV_ModStart> ( d , state -> data , 1 , state -> data <S2SV_ModEnd> , 1 , <S2SV_ModStart> err ( \"command<S2SV_blank>0x51<S2SV_blank>transfer<S2SV_blank>failed.\" ) ; mutex_unlock ( & d -> data_mutex\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9557\n\n```\nCWE-190 static int jas_iccgetsint32 ( jas_stream_t * in , jas_iccsint32_t * val ) { <S2SV_StartBug> ulonglong tmp ; <S2SV_EndBug> if ( jas_iccgetuint ( in , 4 , & tmp ) ) return - 1 ; <S2SV_StartBug> * val = ( tmp & 0x80000000 ) ? ( - JAS_CAST ( longlong , ( ( ( ~ tmp ) & <S2SV_EndBug> <S2SV_StartBug> 0x7fffffff ) + 1 ) ) ) : JAS_CAST ( longlong , tmp ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> val ) { jas_ulonglong <S2SV_ModEnd> tmp ; if <S2SV_ModStart> - JAS_CAST ( jas_longlong <S2SV_ModEnd> , ( ( <S2SV_ModStart> : JAS_CAST ( jas_longlong <S2SV_ModEnd> , tmp )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void handle_associated_event ( struct cpu_hw_events * cpuc , int idx , struct perf_sample_data * data , struct pt_regs * regs ) { struct perf_event * event = cpuc -> events [ idx ] ; struct hw_perf_event * hwc = & event -> hw ; mipspmu_event_update ( event , hwc , idx ) ; data -> period = event -> hw . last_period ; if ( ! mipspmu_event_set_period ( event , hwc , idx ) ) return ; <S2SV_StartBug> if ( perf_event_overflow ( event , 0 , data , regs ) ) <S2SV_EndBug> mipspmu -> disable_event ( idx ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( event , <S2SV_ModEnd> data , regs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12248\n\n```\nCWE-125 static mrb_value fiber_switch ( mrb_state * mrb , mrb_value self , mrb_int len , const mrb_value * a , mrb_bool resume , mrb_bool vmexec ) { struct mrb_context * c = fiber_check ( mrb , self ) ; struct mrb_context * old_c = mrb -> c ; <S2SV_StartBug> mrb_value value ; <S2SV_EndBug> <S2SV_StartBug> fiber_check_cfunc ( mrb , c ) ; <S2SV_EndBug> <S2SV_StartBug> if ( resume && c -> status == MRB_FIBER_TRANSFERRED ) { <S2SV_EndBug> mrb_raise ( mrb , E_FIBER_ERROR , \"resuming<S2SV_blank>transferred<S2SV_blank>fiber\" ) ; } <S2SV_StartBug> if ( c -> status == MRB_FIBER_RUNNING || c -> status == MRB_FIBER_RESUMED ) { <S2SV_EndBug> mrb_raise ( mrb , E_FIBER_ERROR , \"double<S2SV_blank>resume<S2SV_blank>(fib)\" ) ; } <S2SV_StartBug> if ( c -> status == MRB_FIBER_TERMINATED ) { <S2SV_EndBug> mrb_raise ( mrb , E_FIBER_ERROR , \"resuming<S2SV_blank>dead<S2SV_blank>fiber\" ) ; } <S2SV_StartBug> mrb -> c -> status = resume ? MRB_FIBER_RESUMED : MRB_FIBER_TRANSFERRED ; <S2SV_EndBug> c -> prev = resume ? mrb -> c : ( c -> prev ? c -> prev : mrb -> root_c ) ; <S2SV_StartBug> if ( c -> status == MRB_FIBER_CREATED ) { <S2SV_EndBug> mrb_value * b , * e ; <S2SV_StartBug> if ( len >= c -> stend - c -> stack ) { <S2SV_EndBug> mrb_raise ( mrb , E_FIBER_ERROR , \"too<S2SV_blank>many<S2SV_blank>arguments<S2SV_blank>to<S2SV_blank>fiber\" ) ; } b = c -> stack + 1 ; e = b + len ; while ( b < e ) { * b ++ = * a ++ ; } c -> cibase -> argc = ( int ) len ; value = c -> stack [ 0 ] = MRB_PROC_ENV ( c -> ci -> proc ) -> stack [ 0 ] ; } else { value = fiber_result ( mrb , a , len ) ; } <S2SV_StartBug> fiber_switch_context ( mrb , c ) ; <S2SV_EndBug> if ( vmexec ) { c -> vmexec = TRUE ; value = mrb_vm_exec ( mrb , c -> ci [ - 1 ] . proc , c -> ci -> pc ) ; mrb -> c = old_c ; } else { MARK_CONTEXT_MODIFY ( c ) ; } return value ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> c ; enum mrb_fiber_state status ; <S2SV_ModStart> , c ) ; status = c -> status <S2SV_ModStart> ( resume && <S2SV_ModEnd> status == MRB_FIBER_TRANSFERRED <S2SV_ModStart> } if ( <S2SV_ModEnd> status == MRB_FIBER_RUNNING <S2SV_ModStart> == MRB_FIBER_RUNNING || <S2SV_ModEnd> status == MRB_FIBER_RESUMED <S2SV_ModStart> } if ( <S2SV_ModEnd> status == MRB_FIBER_TERMINATED <S2SV_ModStart> ) ; } old_c <S2SV_ModEnd> -> status = <S2SV_ModStart> root_c ) ; fiber_switch_context ( mrb , c ) ; if ( <S2SV_ModEnd> status == MRB_FIBER_CREATED <S2SV_ModStart> * e ; mrb_stack_extend ( mrb , len + 2 ) ; <S2SV_ModEnd> b = c <S2SV_ModStart> ) ; } <S2SV_ModEnd> if ( vmexec\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3572\n\n```\nCWE-310 int ssl3_get_key_exchange ( SSL * s ) { # ifndef OPENSSL_NO_RSA unsigned char * q , md_buf [ EVP_MAX_MD_SIZE * 2 ] ; # endif EVP_MD_CTX md_ctx ; unsigned char * param , * p ; int al , j , ok ; long i , param_len , n , alg_k , alg_a ; EVP_PKEY * pkey = NULL ; const EVP_MD * md = NULL ; # ifndef OPENSSL_NO_RSA RSA * rsa = NULL ; # endif # ifndef OPENSSL_NO_DH DH * dh = NULL ; # endif # ifndef OPENSSL_NO_ECDH EC_KEY * ecdh = NULL ; BN_CTX * bn_ctx = NULL ; EC_POINT * srvr_ecpoint = NULL ; int curve_nid = 0 ; int encoded_pt_len = 0 ; # endif <S2SV_StartBug> n = s -> method -> ssl_get_message ( s , <S2SV_EndBug> SSL3_ST_CR_KEY_EXCH_A , SSL3_ST_CR_KEY_EXCH_B , - 1 , s -> max_cert_list , & ok ) ; <S2SV_StartBug> if ( ! ok ) return ( ( int ) n ) ; <S2SV_EndBug> if ( s -> s3 -> tmp . message_type != SSL3_MT_SERVER_KEY_EXCHANGE ) { <S2SV_StartBug> # ifndef OPENSSL_NO_PSK <S2SV_EndBug> <S2SV_StartBug> if ( s -> s3 -> tmp . new_cipher -> algorithm_mkey & SSL_kPSK ) <S2SV_EndBug> { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; if ( s -> ctx -> psk_identity_hint ) OPENSSL_free ( s -> ctx -> psk_identity_hint ) ; s -> ctx -> psk_identity_hint = NULL ; } # endif s -> s3 -> tmp . reuse_message = 1 ; return ( 1 ) ; } param = p = ( unsigned char * ) s -> init_msg ; if ( s -> session -> sess_cert != NULL ) { # ifndef OPENSSL_NO_RSA if ( s -> session -> sess_cert -> peer_rsa_tmp != NULL ) { RSA_free ( s -> session -> sess_cert -> peer_rsa_tmp ) ; s -> session -> sess_cert -> peer_rsa_tmp = NULL ; } # endif # ifndef OPENSSL_NO_DH if ( s -> session -> sess_cert -> peer_dh_tmp ) { DH_free ( s -> session -> sess_cert -> peer_dh_tmp ) ; s -> session -> sess_cert -> peer_dh_tmp = NULL ; } # endif # ifndef OPENSSL_NO_ECDH if ( s -> session -> sess_cert -> peer_ecdh_tmp ) { EC_KEY_free ( s -> session -> sess_cert -> peer_ecdh_tmp ) ; s -> session -> sess_cert -> peer_ecdh_tmp = NULL ; } # endif } else { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; } param_len = 0 ; alg_k = s -> s3 -> tmp . new_cipher -> algorithm_mkey ; alg_a = s -> s3 -> tmp . new_cipher -> algorithm_auth ; EVP_MD_CTX_init ( & md_ctx ) ; al = SSL_AD_DECODE_ERROR ; # ifndef OPENSSL_NO_PSK if ( alg_k & SSL_kPSK ) { char tmp_id_hint [ PSK_MAX_IDENTITY_LEN + 1 ] ; param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > PSK_MAX_IDENTITY_LEN ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_DATA_LENGTH_TOO_LONG ) ; goto f_err ; } if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_PSK_IDENTITY_HINT_LENGTH ) ; goto f_err ; } param_len += i ; memcpy ( tmp_id_hint , p , i ) ; memset ( tmp_id_hint + i , 0 , PSK_MAX_IDENTITY_LEN + 1 - i ) ; if ( s -> ctx -> psk_identity_hint != NULL ) OPENSSL_free ( s -> ctx -> psk_identity_hint ) ; s -> ctx -> psk_identity_hint = BUF_strdup ( tmp_id_hint ) ; if ( s -> ctx -> psk_identity_hint == NULL ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto f_err ; } p += i ; n -= param_len ; } else # endif # ifndef OPENSSL_NO_SRP if ( alg_k & SSL_kSRP ) { param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_N_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . N = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_G_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . g = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 1 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 1 ; i = ( unsigned int ) ( p [ 0 ] ) ; p ++ ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_S_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . s = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_B_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( s -> srp_ctx . B = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( ! srp_verify_server_param ( s , & al ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SRP_PARAMETERS ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DSA else if ( alg_a & SSL_aDSS ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_DSA_SIGN ] . x509 ) ; # endif } else # endif # ifndef OPENSSL_NO_RSA if ( alg_k & SSL_kRSA ) { if ( ( rsa = RSA_new ( ) ) == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_MODULUS_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( rsa -> n = BN_bin2bn ( p , i , rsa -> n ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_E_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( rsa -> e = BN_bin2bn ( p , i , rsa -> e ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; else { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_INTERNAL_ERROR ) ; goto err ; } s -> session -> sess_cert -> peer_rsa_tmp = rsa ; rsa = NULL ; } # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DH else if ( alg_k & SSL_kDHE ) { if ( ( dh = DH_new ( ) ) == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_DH_LIB ) ; goto err ; } param_len = 2 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_P_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> p = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_G_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> g = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; if ( 2 > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } param_len += 2 ; n2s ( p , i ) ; if ( i > n - param_len ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_DH_PUB_KEY_LENGTH ) ; goto f_err ; } param_len += i ; if ( ! ( dh -> pub_key = BN_bin2bn ( p , i , NULL ) ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_BN_LIB ) ; goto err ; } p += i ; n -= param_len ; if ( ! ssl_security ( s , SSL_SECOP_TMP_DH , DH_security_bits ( dh ) , 0 , dh ) ) { al = SSL_AD_HANDSHAKE_FAILURE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_DH_KEY_TOO_SMALL ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # else if ( 0 ) ; # endif # ifndef OPENSSL_NO_DSA else if ( alg_a & SSL_aDSS ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_DSA_SIGN ] . x509 ) ; # endif s -> session -> sess_cert -> peer_dh_tmp = dh ; dh = NULL ; } else if ( ( alg_k & SSL_kDHr ) || ( alg_k & SSL_kDHd ) ) { al = SSL_AD_ILLEGAL_PARAMETER ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_TRIED_TO_USE_UNSUPPORTED_CIPHER ) ; goto f_err ; } # endif # ifndef OPENSSL_NO_ECDH else if ( alg_k & SSL_kECDHE ) { EC_GROUP * ngroup ; const EC_GROUP * group ; if ( ( ecdh = EC_KEY_new ( ) ) == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } param_len = 4 ; if ( param_len > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } if ( ! tls1_check_curve ( s , p , 3 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_WRONG_CURVE ) ; goto f_err ; } if ( ( curve_nid = tls1_ec_curve_id2nid ( * ( p + 2 ) ) ) == 0 ) { al = SSL_AD_INTERNAL_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNABLE_TO_FIND_ECDH_PARAMETERS ) ; goto f_err ; } ngroup = EC_GROUP_new_by_curve_name ( curve_nid ) ; if ( ngroup == NULL ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_EC_LIB ) ; goto err ; } if ( EC_KEY_set_group ( ecdh , ngroup ) == 0 ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_EC_LIB ) ; goto err ; } EC_GROUP_free ( ngroup ) ; group = EC_KEY_get0_group ( ecdh ) ; if ( SSL_C_IS_EXPORT ( s -> s3 -> tmp . new_cipher ) && ( EC_GROUP_get_degree ( group ) > 163 ) ) { al = SSL_AD_EXPORT_RESTRICTION ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_ECGROUP_TOO_LARGE_FOR_CIPHER ) ; goto f_err ; } p += 3 ; if ( ( ( srvr_ecpoint = EC_POINT_new ( group ) ) == NULL ) || ( ( bn_ctx = BN_CTX_new ( ) ) == NULL ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_MALLOC_FAILURE ) ; goto err ; } encoded_pt_len = * p ; p += 1 ; if ( ( encoded_pt_len > n - param_len ) || ( EC_POINT_oct2point ( group , srvr_ecpoint , p , encoded_pt_len , bn_ctx ) == 0 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_ECPOINT ) ; goto f_err ; } param_len += encoded_pt_len ; n -= param_len ; p += encoded_pt_len ; if ( 0 ) ; # ifndef OPENSSL_NO_RSA else if ( alg_a & SSL_aRSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_RSA_ENC ] . x509 ) ; # endif # ifndef OPENSSL_NO_ECDSA else if ( alg_a & SSL_aECDSA ) pkey = X509_get_pubkey ( s -> session -> sess_cert -> peer_pkeys [ SSL_PKEY_ECC ] . x509 ) ; # endif EC_KEY_set_public_key ( ecdh , srvr_ecpoint ) ; s -> session -> sess_cert -> peer_ecdh_tmp = ecdh ; ecdh = NULL ; BN_CTX_free ( bn_ctx ) ; bn_ctx = NULL ; EC_POINT_free ( srvr_ecpoint ) ; srvr_ecpoint = NULL ; } else if ( alg_k ) { al = SSL_AD_UNEXPECTED_MESSAGE ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNEXPECTED_MESSAGE ) ; goto f_err ; } # endif if ( pkey != NULL ) { if ( SSL_USE_SIGALGS ( s ) ) { int rv ; if ( 2 > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } rv = tls12_check_peer_sigalg ( & md , s , p , pkey ) ; if ( rv == - 1 ) goto err ; else if ( rv == 0 ) { goto f_err ; } # ifdef SSL_DEBUG fprintf ( stderr , \"USING<S2SV_blank>TLSv1.2<S2SV_blank>HASH<S2SV_blank>%s\\\\n\" , EVP_MD_name ( md ) ) ; # endif p += 2 ; n -= 2 ; } else md = EVP_sha1 ( ) ; if ( 2 > n ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_LENGTH_TOO_SHORT ) ; goto f_err ; } n2s ( p , i ) ; n -= 2 ; j = EVP_PKEY_size ( pkey ) ; if ( ( i != n ) || ( n > j ) || ( n <= 0 ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_WRONG_SIGNATURE_LENGTH ) ; goto f_err ; } # ifndef OPENSSL_NO_RSA if ( pkey -> type == EVP_PKEY_RSA && ! SSL_USE_SIGALGS ( s ) ) { int num ; unsigned int size ; j = 0 ; q = md_buf ; for ( num = 2 ; num > 0 ; num -- ) { EVP_MD_CTX_set_flags ( & md_ctx , EVP_MD_CTX_FLAG_NON_FIPS_ALLOW ) ; EVP_DigestInit_ex ( & md_ctx , ( num == 2 ) ? s -> ctx -> md5 : s -> ctx -> sha1 , NULL ) ; EVP_DigestUpdate ( & md_ctx , & ( s -> s3 -> client_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_DigestUpdate ( & md_ctx , & ( s -> s3 -> server_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_DigestUpdate ( & md_ctx , param , param_len ) ; EVP_DigestFinal_ex ( & md_ctx , q , & size ) ; q += size ; j += size ; } i = RSA_verify ( NID_md5_sha1 , md_buf , j , p , n , pkey -> pkey . rsa ) ; if ( i < 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_RSA_DECRYPT ) ; goto f_err ; } if ( i == 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SIGNATURE ) ; goto f_err ; } } else # endif { EVP_VerifyInit_ex ( & md_ctx , md , NULL ) ; EVP_VerifyUpdate ( & md_ctx , & ( s -> s3 -> client_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_VerifyUpdate ( & md_ctx , & ( s -> s3 -> server_random [ 0 ] ) , SSL3_RANDOM_SIZE ) ; EVP_VerifyUpdate ( & md_ctx , param , param_len ) ; if ( EVP_VerifyFinal ( & md_ctx , p , ( int ) n , pkey ) <= 0 ) { al = SSL_AD_DECRYPT_ERROR ; SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_BAD_SIGNATURE ) ; goto f_err ; } } } else { if ( ! ( alg_a & ( SSL_aNULL | SSL_aSRP ) ) && ! ( alg_k & SSL_kPSK ) ) { if ( ssl3_check_cert_and_algorithm ( s ) ) SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , ERR_R_INTERNAL_ERROR ) ; goto err ; } if ( n != 0 ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_EXTRA_DATA_IN_MESSAGE ) ; goto f_err ; } } EVP_PKEY_free ( pkey ) ; EVP_MD_CTX_cleanup ( & md_ctx ) ; return ( 1 ) ; f_err : ssl3_send_alert ( s , SSL3_AL_FATAL , al ) ; err : EVP_PKEY_free ( pkey ) ; # ifndef OPENSSL_NO_RSA if ( rsa != NULL ) RSA_free ( rsa ) ; # endif # ifndef OPENSSL_NO_DH if ( dh != NULL ) DH_free ( dh ) ; # endif # ifndef OPENSSL_NO_ECDH BN_CTX_free ( bn_ctx ) ; EC_POINT_free ( srvr_ecpoint ) ; if ( ecdh != NULL ) EC_KEY_free ( ecdh ) ; # endif EVP_MD_CTX_cleanup ( & md_ctx ) ; return ( - 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; # endif EVP_MD_CTX_init ( & md_ctx ) ; <S2SV_ModStart> ) n ) ; alg_k = s -> s3 -> tmp . new_cipher -> algorithm_mkey <S2SV_ModStart> SSL3_MT_SERVER_KEY_EXCHANGE ) { if ( alg_k & ( SSL_kDHE | SSL_kECDHE ) ) { SSLerr ( SSL_F_SSL3_GET_KEY_EXCHANGE , SSL_R_UNEXPECTED_MESSAGE ) ; al = SSL_AD_UNEXPECTED_MESSAGE ; goto f_err ; } <S2SV_ModStart> OPENSSL_NO_PSK if ( alg_k & SSL_kPSK ) { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; if ( s -> ctx -> psk_identity_hint ) OPENSSL_free ( s -> ctx -> psk_identity_hint ) ; s -> ctx -> psk_identity_hint = NULL ; } # endif s -> s3 -> tmp . reuse_message = 1 ; return ( 1 ) ; } param = p = ( unsigned char * ) s -> init_msg ; if ( s -> session -> sess_cert != NULL ) { # ifndef OPENSSL_NO_RSA if ( s -> session -> sess_cert -> peer_rsa_tmp != NULL ) { RSA_free ( s -> session -> sess_cert -> peer_rsa_tmp ) ; s -> session -> sess_cert -> peer_rsa_tmp = NULL ; } # endif # ifndef OPENSSL_NO_DH if ( s -> session -> sess_cert -> peer_dh_tmp ) { DH_free ( s -> session -> sess_cert -> peer_dh_tmp ) ; s -> session -> sess_cert -> peer_dh_tmp = NULL ; } # endif # ifndef OPENSSL_NO_ECDH if ( s -> session -> sess_cert -> peer_ecdh_tmp ) { EC_KEY_free ( s -> session -> sess_cert -> peer_ecdh_tmp ) ; s -> session -> sess_cert -> peer_ecdh_tmp = NULL ; } # endif } else { s -> session -> sess_cert = ssl_sess_cert_new ( ) ; } param_len = 0 ; alg_a = <S2SV_ModStart> . new_cipher -> algorithm_auth <S2SV_ModEnd> ; al =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5225\n\n```\nCWE-119 static copyFunc pickCopyFunc ( TIFF * in , TIFF * out , uint16 bitspersample , uint16 samplesperpixel ) { uint16 shortv ; uint32 w , l , tw , tl ; int bychunk ; <S2SV_StartBug> ( void ) TIFFGetField ( in , TIFFTAG_PLANARCONFIG , & shortv ) ; <S2SV_EndBug> if ( shortv != config && bitspersample != 8 && samplesperpixel > 1 ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>handle<S2SV_blank>different<S2SV_blank>planar<S2SV_blank>configuration<S2SV_blank>w/<S2SV_blank>bits/sample<S2SV_blank>!=<S2SV_blank>8\\\\n\" , TIFFFileName ( in ) ) ; return ( NULL ) ; } TIFFGetField ( in , TIFFTAG_IMAGEWIDTH , & w ) ; TIFFGetField ( in , TIFFTAG_IMAGELENGTH , & l ) ; if ( ! ( TIFFIsTiled ( out ) || TIFFIsTiled ( in ) ) ) { uint32 irps = ( uint32 ) - 1L ; TIFFGetField ( in , TIFFTAG_ROWSPERSTRIP , & irps ) ; bychunk = ! bias && ( rowsperstrip == irps ) ; } else { if ( bias ) { fprintf ( stderr , \"%s:<S2SV_blank>Cannot<S2SV_blank>handle<S2SV_blank>tiled<S2SV_blank>configuration<S2SV_blank>w/bias<S2SV_blank>image\\\\n\" , TIFFFileName ( in ) ) ; return ( NULL ) ; } if ( TIFFIsTiled ( out ) ) { if ( ! TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tw ) ) tw = w ; if ( ! TIFFGetField ( in , TIFFTAG_TILELENGTH , & tl ) ) tl = l ; bychunk = ( tw == tilewidth && tl == tilelength ) ; } else { TIFFGetField ( in , TIFFTAG_TILEWIDTH , & tw ) ; TIFFGetField ( in , TIFFTAG_TILELENGTH , & tl ) ; bychunk = ( tw == w && tl == rowsperstrip ) ; } } # define T 1 # define F 0 # define pack ( a , b , c , d , e ) ( ( long ) ( ( ( a ) << 11 ) | ( ( b ) << 3 ) | ( ( c ) << 2 ) | ( ( d ) << 1 ) | ( e ) ) ) switch ( pack ( shortv , config , TIFFIsTiled ( in ) , TIFFIsTiled ( out ) , bychunk ) ) { case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_CONTIG , F , T , F ) : case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_CONTIG , F , T , T ) : return cpContigStrips2ContigTiles ; case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_SEPARATE , F , T , F ) : case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_SEPARATE , F , T , T ) : return cpContigStrips2SeparateTiles ; case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_CONTIG , F , T , F ) : case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_CONTIG , F , T , T ) : return cpSeparateStrips2ContigTiles ; case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_SEPARATE , F , T , F ) : case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_SEPARATE , F , T , T ) : return cpSeparateStrips2SeparateTiles ; case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_CONTIG , T , T , F ) : case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_CONTIG , T , T , T ) : return cpContigTiles2ContigTiles ; case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_SEPARATE , T , T , F ) : case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_SEPARATE , T , T , T ) : return cpContigTiles2SeparateTiles ; case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_CONTIG , T , T , F ) : case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_CONTIG , T , T , T ) : return cpSeparateTiles2ContigTiles ; case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_SEPARATE , T , T , F ) : case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_SEPARATE , T , T , T ) : return cpSeparateTiles2SeparateTiles ; case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_CONTIG , T , F , F ) : case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_CONTIG , T , F , T ) : return cpContigTiles2ContigStrips ; case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_SEPARATE , T , F , F ) : case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_SEPARATE , T , F , T ) : return cpContigTiles2SeparateStrips ; case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_CONTIG , T , F , F ) : case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_CONTIG , T , F , T ) : return cpSeparateTiles2ContigStrips ; case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_SEPARATE , T , F , F ) : case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_SEPARATE , T , F , T ) : return cpSeparateTiles2SeparateStrips ; case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_CONTIG , F , F , F ) : return bias ? cpBiasedContig2Contig : cpContig2ContigByRow ; case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_CONTIG , F , F , T ) : return cpDecodedStrips ; case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_SEPARATE , F , F , F ) : case pack ( PLANARCONFIG_CONTIG , PLANARCONFIG_SEPARATE , F , F , T ) : return cpContig2SeparateByRow ; case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_CONTIG , F , F , F ) : case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_CONTIG , F , F , T ) : return cpSeparate2ContigByRow ; case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_SEPARATE , F , F , F ) : case pack ( PLANARCONFIG_SEPARATE , PLANARCONFIG_SEPARATE , F , F , T ) : return cpSeparate2SeparateByRow ; } # undef pack # undef F # undef T fprintf ( stderr , \"tiffcp:<S2SV_blank>%s:<S2SV_blank>Don\\'t<S2SV_blank>know<S2SV_blank>how<S2SV_blank>to<S2SV_blank>copy/convert<S2SV_blank>image.\\\\n\" , TIFFFileName ( in ) ) ; return ( NULL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( void ) TIFFGetFieldDefaulted <S2SV_ModEnd> ( in ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16644\n\n```\nCWE-119 static Image * ReadPICTImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { <S2SV_StartBug> # define ThrowPICTException ( exception , message ) { if ( tile_image != ( Image * ) NULL ) tile_image = DestroyImage ( tile_image ) ; if ( read_info != ( ImageInfo * ) NULL ) read_info = DestroyImageInfo ( read_info ) ; ThrowReaderException ( ( exception ) , ( message ) ) ; } <S2SV_EndBug> char geometry [ MagickPathExtent ] , header_ole [ 4 ] ; Image * image , * tile_image ; ImageInfo * read_info ; int c , code ; MagickBooleanType jpeg , status ; PICTRectangle frame ; PICTPixmap pixmap ; Quantum index ; register Quantum * q ; register ssize_t i , x ; size_t extent , length ; ssize_t count , flags , j , version , y ; StringInfo * profile ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickCoreSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickCoreSignature ) ; image = AcquireImage ( image_info , exception ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } read_info = ( ImageInfo * ) NULL ; tile_image = ( Image * ) NULL ; pixmap . bits_per_pixel = 0 ; pixmap . component_count = 0 ; header_ole [ 0 ] = ReadBlobByte ( image ) ; header_ole [ 1 ] = ReadBlobByte ( image ) ; header_ole [ 2 ] = ReadBlobByte ( image ) ; header_ole [ 3 ] = ReadBlobByte ( image ) ; if ( ! ( ( header_ole [ 0 ] == 0x50 ) && ( header_ole [ 1 ] == 0x49 ) && ( header_ole [ 2 ] == 0x43 ) && ( header_ole [ 3 ] == 0x54 ) ) ) for ( i = 0 ; i < 508 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; ( void ) ReadBlobMSBShort ( image ) ; if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; while ( ( c = ReadBlobByte ( image ) ) == 0 ) ; if ( c != 0x11 ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; version = ( ssize_t ) ReadBlobByte ( image ) ; if ( version == 2 ) { c = ReadBlobByte ( image ) ; if ( c != 0xff ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; } else if ( version != 1 ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( frame . left < 0 ) || ( frame . right < 0 ) || ( frame . top < 0 ) || ( frame . bottom < 0 ) || ( frame . left >= frame . right ) || ( frame . top >= frame . bottom ) ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; flags = 0 ; image -> depth = 8 ; image -> columns = ( size_t ) ( frame . right - frame . left ) ; image -> rows = ( size_t ) ( frame . bottom - frame . top ) ; image -> resolution . x = DefaultResolution ; image -> resolution . y = DefaultResolution ; image -> units = UndefinedResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) { ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; } status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status != MagickFalse ) status = ResetImagePixels ( image , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; jpeg = MagickFalse ; for ( code = 0 ; EOFBlob ( image ) == MagickFalse ; ) { if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; if ( ( version == 1 ) || ( ( TellBlob ( image ) % 2 ) != 0 ) ) code = ReadBlobByte ( image ) ; if ( version == 2 ) code = ReadBlobMSBSignedShort ( image ) ; if ( code < 0 ) break ; if ( code == 0 ) continue ; if ( code > 0xa1 ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"%04X:\" , code ) ; } else { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>%04X<S2SV_blank>%s:<S2SV_blank>%s\" , code , codes [ code ] . name , codes [ code ] . description ) ; switch ( code ) { case 0x01 : { length = ReadBlobMSBShort ( image ) ; <S2SV_StartBug> if ( length != 0x000a ) <S2SV_EndBug> { for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( ( frame . left & 0x8000 ) != 0 ) || ( ( frame . top & 0x8000 ) != 0 ) ) break ; image -> columns = ( size_t ) ( frame . right - frame . left ) ; image -> rows = ( size_t ) ( frame . bottom - frame . top ) ; status = SetImageExtent ( image , image -> columns , image -> rows , exception ) ; if ( status != MagickFalse ) status = ResetImagePixels ( image , exception ) ; if ( status == MagickFalse ) return ( DestroyImageList ( image ) ) ; break ; } case 0x12 : case 0x13 : case 0x14 : { ssize_t pattern ; size_t height , width ; pattern = ( ssize_t ) ReadBlobMSBShort ( image ) ; for ( i = 0 ; i < 8 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; if ( pattern == 2 ) { for ( i = 0 ; i < 5 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } if ( pattern != 1 ) ThrowPICTException ( CorruptImageError , \"UnknownPatternType\" ) ; length = ReadBlobMSBShort ( image ) ; <S2SV_StartBug> if ( ReadRectangle ( image , & frame ) == MagickFalse ) <S2SV_EndBug> ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ReadPixmap ( image , & pixmap ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; image -> depth = ( size_t ) pixmap . component_size ; image -> resolution . x = 1.0 * pixmap . horizontal_resolution ; image -> resolution . y = 1.0 * pixmap . vertical_resolution ; image -> units = PixelsPerInchResolution ; ( void ) ReadBlobMSBLong ( image ) ; flags = ( ssize_t ) ReadBlobMSBShort ( image ) ; <S2SV_StartBug> length = ReadBlobMSBShort ( image ) ; <S2SV_EndBug> for ( i = 0 ; i <= ( ssize_t ) length ; i ++ ) ( void ) ReadBlobMSBLong ( image ) ; width = ( size_t ) ( frame . bottom - frame . top ) ; height = ( size_t ) ( frame . right - frame . left ) ; if ( pixmap . bits_per_pixel <= 8 ) length &= 0x7fff ; if ( pixmap . bits_per_pixel == 16 ) width <<= 1 ; if ( length == 0 ) length = width ; if ( length < 8 ) { for ( i = 0 ; i < ( ssize_t ) ( length * height ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } else for ( i = 0 ; i < ( ssize_t ) height ; i ++ ) { if ( EOFBlob ( image ) != MagickFalse ) break ; if ( length > 200 ) { for ( j = 0 ; j < ( ssize_t ) ReadBlobMSBShort ( image ) ; j ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } else for ( j = 0 ; j < ( ssize_t ) ReadBlobByte ( image ) ; j ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } break ; } case 0x1b : { image -> background_color . red = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; image -> background_color . green = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; image -> background_color . blue = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; break ; } case 0x70 : case 0x71 : case 0x72 : case 0x73 : case 0x74 : case 0x75 : case 0x76 : case 0x77 : { <S2SV_StartBug> length = ReadBlobMSBShort ( image ) ; <S2SV_EndBug> for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; break ; } case 0x90 : case 0x91 : case 0x98 : case 0x99 : case 0x9a : case 0x9b : { PICTRectangle source , destination ; register unsigned char * p ; size_t j ; ssize_t bytes_per_line ; unsigned char * pixels ; bytes_per_line = 0 ; if ( ( code != 0x9a ) && ( code != 0x9b ) ) bytes_per_line = ( ssize_t ) ReadBlobMSBShort ( image ) ; else { ( void ) ReadBlobMSBShort ( image ) ; ( void ) ReadBlobMSBShort ( image ) ; ( void ) ReadBlobMSBShort ( image ) ; } if ( ReadRectangle ( image , & frame ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; tile_image = CloneImage ( image , ( size_t ) ( frame . right - frame . left ) , ( size_t ) ( frame . bottom - frame . top ) , MagickTrue , exception ) ; if ( tile_image == ( Image * ) NULL ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ( code == 0x9a ) || ( code == 0x9b ) || ( ( bytes_per_line & 0x8000 ) != 0 ) ) { if ( ReadPixmap ( image , & pixmap ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; tile_image -> depth = ( size_t ) pixmap . component_size ; tile_image -> alpha_trait = pixmap . component_count == 4 ? BlendPixelTrait : UndefinedPixelTrait ; tile_image -> resolution . x = ( double ) pixmap . horizontal_resolution ; tile_image -> resolution . y = ( double ) pixmap . vertical_resolution ; tile_image -> units = PixelsPerInchResolution ; if ( tile_image -> alpha_trait != UndefinedPixelTrait ) ( void ) SetImageAlpha ( tile_image , OpaqueAlpha , exception ) ; } if ( ( code != 0x9a ) && ( code != 0x9b ) ) { tile_image -> colors = 2 ; if ( ( bytes_per_line & 0x8000 ) != 0 ) { ( void ) ReadBlobMSBLong ( image ) ; flags = ( ssize_t ) ReadBlobMSBShort ( image ) ; tile_image -> colors = 1UL * ReadBlobMSBShort ( image ) + 1 ; } status = AcquireImageColormap ( tile_image , tile_image -> colors , exception ) ; if ( status == MagickFalse ) ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bytes_per_line & 0x8000 ) != 0 ) { for ( i = 0 ; i < ( ssize_t ) tile_image -> colors ; i ++ ) { j = ReadBlobMSBShort ( image ) % tile_image -> colors ; if ( ( flags & 0x8000 ) != 0 ) j = ( size_t ) i ; tile_image -> colormap [ j ] . red = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; tile_image -> colormap [ j ] . green = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; tile_image -> colormap [ j ] . blue = ( Quantum ) ScaleShortToQuantum ( ReadBlobMSBShort ( image ) ) ; } } else { for ( i = 0 ; i < ( ssize_t ) tile_image -> colors ; i ++ ) { tile_image -> colormap [ i ] . red = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . red ) ; tile_image -> colormap [ i ] . green = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . green ) ; tile_image -> colormap [ i ] . blue = ( Quantum ) ( QuantumRange - tile_image -> colormap [ i ] . blue ) ; } } } if ( EOFBlob ( image ) != MagickFalse ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( ReadRectangle ( image , & source ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( ReadRectangle ( image , & destination ) == MagickFalse ) ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; ( void ) ReadBlobMSBShort ( image ) ; if ( ( code == 0x91 ) || ( code == 0x99 ) || ( code == 0x9b ) ) { <S2SV_StartBug> length = ReadBlobMSBShort ( image ) ; <S2SV_EndBug> for ( i = 0 ; i < ( ssize_t ) ( length - 2 ) ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } if ( ( code != 0x9a ) && ( code != 0x9b ) && ( bytes_per_line & 0x8000 ) == 0 ) pixels = DecodeImage ( image , tile_image , ( size_t ) bytes_per_line , 1 , & extent ) ; else pixels = DecodeImage ( image , tile_image , ( size_t ) bytes_per_line , ( unsigned int ) pixmap . bits_per_pixel , & extent ) ; if ( pixels == ( unsigned char * ) NULL ) ThrowPICTException ( CorruptImageError , \"UnableToUncompressImage\" ) ; p = pixels ; for ( y = 0 ; y < ( ssize_t ) tile_image -> rows ; y ++ ) { if ( p > ( pixels + extent + image -> columns ) ) { pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; } q = QueueAuthenticPixels ( tile_image , 0 , y , tile_image -> columns , 1 , exception ) ; if ( q == ( Quantum * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) tile_image -> columns ; x ++ ) { if ( tile_image -> storage_class == PseudoClass ) { index = ( Quantum ) ConstrainColormapIndex ( tile_image , ( ssize_t ) * p , exception ) ; SetPixelIndex ( tile_image , index , q ) ; SetPixelRed ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . red , q ) ; SetPixelGreen ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . green , q ) ; SetPixelBlue ( tile_image , tile_image -> colormap [ ( ssize_t ) index ] . blue , q ) ; } else { if ( pixmap . bits_per_pixel == 16 ) { i = ( ssize_t ) ( * p ++ ) ; j = ( size_t ) ( * p ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( i & 0x7c ) << 1 ) ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( ( i & 0x03 ) << 6 ) | ( ( j & 0xe0 ) >> 2 ) ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( ( unsigned char ) ( ( j & 0x1f ) << 3 ) ) , q ) ; } else if ( tile_image -> alpha_trait == UndefinedPixelTrait ) { if ( p > ( pixels + extent + 2 * image -> columns ) ) ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( * ( p + tile_image -> columns ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( * ( p + 2 * tile_image -> columns ) ) , q ) ; } else { if ( p > ( pixels + extent + 3 * image -> columns ) ) ThrowPICTException ( CorruptImageError , \"NotEnoughPixelData\" ) ; SetPixelAlpha ( tile_image , ScaleCharToQuantum ( * p ) , q ) ; SetPixelRed ( tile_image , ScaleCharToQuantum ( * ( p + tile_image -> columns ) ) , q ) ; SetPixelGreen ( tile_image , ScaleCharToQuantum ( * ( p + 2 * tile_image -> columns ) ) , q ) ; SetPixelBlue ( tile_image , ScaleCharToQuantum ( * ( p + 3 * tile_image -> columns ) ) , q ) ; } } p ++ ; q += GetPixelChannels ( tile_image ) ; } if ( SyncAuthenticPixels ( tile_image , exception ) == MagickFalse ) break ; if ( ( tile_image -> storage_class == DirectClass ) && ( pixmap . bits_per_pixel != 16 ) ) { p += ( pixmap . component_count - 1 ) * tile_image -> columns ; if ( p < pixels ) break ; } status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) y , tile_image -> rows ) ; if ( status == MagickFalse ) break ; } pixels = ( unsigned char * ) RelinquishMagickMemory ( pixels ) ; if ( ( jpeg == MagickFalse ) && ( EOFBlob ( image ) == MagickFalse ) ) if ( ( code == 0x9a ) || ( code == 0x9b ) || ( ( bytes_per_line & 0x8000 ) != 0 ) ) ( void ) CompositeImage ( image , tile_image , CopyCompositeOp , MagickTrue , ( ssize_t ) destination . left , ( ssize_t ) destination . top , exception ) ; tile_image = DestroyImage ( tile_image ) ; break ; } case 0xa1 : { unsigned char * info ; size_t type ; type = ReadBlobMSBShort ( image ) ; length = ReadBlobMSBShort ( image ) ; <S2SV_StartBug> if ( length == 0 ) <S2SV_EndBug> break ; ( void ) ReadBlobMSBLong ( image ) ; length -= MagickMin ( length , 4 ) ; if ( length == 0 ) break ; info = ( unsigned char * ) AcquireQuantumMemory ( length , sizeof ( * info ) ) ; if ( info == ( unsigned char * ) NULL ) break ; count = ReadBlob ( image , length , info ) ; if ( count != ( ssize_t ) length ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"UnableToReadImageData\" ) ; } switch ( type ) { case 0xe0 : { profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; SetStringInfoDatum ( profile , info ) ; status = SetImageProfile ( image , \"icc\" , profile , exception ) ; profile = DestroyStringInfo ( profile ) ; if ( status == MagickFalse ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } break ; } case 0x1f2 : { profile = BlobToStringInfo ( ( const void * ) NULL , length ) ; SetStringInfoDatum ( profile , info ) ; status = SetImageProfile ( image , \"iptc\" , profile , exception ) ; if ( status == MagickFalse ) { info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; ThrowPICTException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; } profile = DestroyStringInfo ( profile ) ; break ; } default : break ; } info = ( unsigned char * ) RelinquishMagickMemory ( info ) ; break ; } default : { if ( codes [ code ] . length == - 1 ) ( void ) ReadBlobMSBShort ( image ) ; else for ( i = 0 ; i < ( ssize_t ) codes [ code ] . length ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; } } } if ( code == 0xc00 ) { for ( i = 0 ; i < 24 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } if ( ( ( code >= 0xb0 ) && ( code <= 0xcf ) ) || ( ( code >= 0x8000 ) && ( code <= 0x80ff ) ) ) continue ; if ( code == 0x8200 ) { char filename [ MaxTextExtent ] ; FILE * file ; int unique_file ; jpeg = MagickTrue ; read_info = CloneImageInfo ( image_info ) ; SetImageInfoBlob ( read_info , ( void * ) NULL , 0 ) ; file = ( FILE * ) NULL ; unique_file = AcquireUniqueFileResource ( filename ) ; ( void ) FormatLocaleString ( read_info -> filename , MaxTextExtent , \"jpeg:%s\" , filename ) ; if ( unique_file != - 1 ) file = fdopen ( unique_file , \"wb\" ) ; if ( ( unique_file == - 1 ) || ( file == ( FILE * ) NULL ) ) { ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; ( void ) CopyMagickString ( image -> filename , read_info -> filename , MagickPathExtent ) ; ThrowPICTException ( FileOpenError , \"UnableToCreateTemporaryFile\" ) ; } length = ReadBlobMSBLong ( image ) ; <S2SV_StartBug> if ( length > 154 ) <S2SV_EndBug> { for ( i = 0 ; i < 6 ; i ++ ) ( void ) ReadBlobMSBLong ( image ) ; if ( ReadRectangle ( image , & frame ) == MagickFalse ) { ( void ) fclose ( file ) ; ( void ) RelinquishUniqueFileResource ( read_info -> filename ) ; ThrowPICTException ( CorruptImageError , \"ImproperImageHeader\" ) ; } for ( i = 0 ; i < 122 ; i ++ ) if ( ReadBlobByte ( image ) == EOF ) break ; for ( i = 0 ; i < ( ssize_t ) ( length - 154 ) ; i ++ ) { c = ReadBlobByte ( image ) ; if ( c == EOF ) break ; if ( fputc ( c , file ) != c ) break ; } } ( void ) fclose ( file ) ; ( void ) close ( unique_file ) ; tile_image = ReadImage ( read_info , exception ) ; ( void ) RelinquishUniqueFileResource ( filename ) ; read_info = DestroyImageInfo ( read_info ) ; if ( tile_image == ( Image * ) NULL ) continue ; ( void ) FormatLocaleString ( geometry , MagickPathExtent , \"%.20gx%.20g\" , ( double ) MagickMax ( image -> columns , tile_image -> columns ) , ( double ) MagickMax ( image -> rows , tile_image -> rows ) ) ; ( void ) SetImageExtent ( image , MagickMax ( image -> columns , tile_image -> columns ) , MagickMax ( image -> rows , tile_image -> rows ) , exception ) ; ( void ) TransformImageColorspace ( image , tile_image -> colorspace , exception ) ; ( void ) CompositeImage ( image , tile_image , CopyCompositeOp , MagickTrue , ( ssize_t ) frame . left , ( ssize_t ) frame . right , exception ) ; image -> compression = tile_image -> compression ; tile_image = DestroyImage ( tile_image ) ; continue ; } if ( ( code == 0xff ) || ( code == 0xffff ) ) break ; if ( ( ( code >= 0xd0 ) && ( code <= 0xfe ) ) || ( ( code >= 0x8100 ) && ( code <= 0xffff ) ) ) { length = ReadBlobMSBShort ( image ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) <S2SV_EndBug> if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } if ( ( code >= 0x100 ) && ( code <= 0x7fff ) ) { length = ( size_t ) ( ( code >> 7 ) & 0xff ) ; <S2SV_StartBug> for ( i = 0 ; i < ( ssize_t ) length ; i ++ ) <S2SV_EndBug> if ( ReadBlobByte ( image ) == EOF ) break ; continue ; } } ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , message ) \\\\\\n{ <S2SV_ModEnd> if ( tile_image <S2SV_ModStart> ) ) ; \\\\\\n} <S2SV_ModEnd> char geometry [ <S2SV_ModStart> if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( length <S2SV_ModStart> ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( <S2SV_ModStart> ReadBlobMSBShort ( image ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" <S2SV_ModStart> ReadBlobMSBShort ( image ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" <S2SV_ModStart> ReadBlobMSBShort ( image ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" <S2SV_ModStart> if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( length <S2SV_ModStart> ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; if ( length > <S2SV_ModStart> image ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; <S2SV_ModStart> 0xff ) ; if ( length > GetBlobSize ( image ) ) ThrowPICTException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> static void write_mv_update ( const vp9_tree_index * tree , <S2SV_EndBug> <S2SV_StartBug> vp9_prob probs [ ] , <S2SV_EndBug> const unsigned int counts [ ] , <S2SV_StartBug> int n , vp9_writer * w ) { <S2SV_EndBug> int i ; unsigned int branch_ct [ 32 ] [ 2 ] ; assert ( n <= 32 ) ; vp9_tree_probs_from_distribution ( tree , branch_ct , counts ) ; for ( i = 0 ; i < n - 1 ; ++ i ) update_mv ( w , branch_ct [ i ] , & probs [ i ] , MV_UPDATE_PROB ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> write_mv_update ( const vpx_tree_index <S2SV_ModEnd> * tree , <S2SV_ModStart> * tree , vpx_prob <S2SV_ModEnd> probs [ ] <S2SV_ModStart> int n , vpx_writer <S2SV_ModEnd> * w )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3212\n\n```\nCWE-362 static int sctp_setsockopt_auto_asconf ( struct sock * sk , char __user * optval , unsigned int optlen ) { int val ; struct sctp_sock * sp = sctp_sk ( sk ) ; if ( optlen < sizeof ( int ) ) return - EINVAL ; if ( get_user ( val , ( int __user * ) optval ) ) return - EFAULT ; if ( ! sctp_is_ep_boundall ( sk ) && val ) return - EINVAL ; if ( ( val && sp -> do_auto_asconf ) || ( ! val && ! sp -> do_auto_asconf ) ) return 0 ; <S2SV_StartBug> if ( val == 0 && sp -> do_auto_asconf ) { <S2SV_EndBug> list_del ( & sp -> auto_asconf_list ) ; sp -> do_auto_asconf = 0 ; } else if ( val && ! sp -> do_auto_asconf ) { list_add_tail ( & sp -> auto_asconf_list , & sock_net ( sk ) -> sctp . auto_asconf_splist ) ; sp -> do_auto_asconf = 1 ; } <S2SV_StartBug> return 0 ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return 0 ; spin_lock_bh ( & sock_net ( sk ) -> sctp . addr_wq_lock ) ; <S2SV_ModStart> 1 ; } spin_unlock_bh ( & sock_net ( sk ) -> sctp . addr_wq_lock ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-120(缓冲区溢出)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14359\n\n```\nCWE-120 void test_base64_decode ( void ) { char buffer [ 16 ] ; <S2SV_StartBug> int len = mutt_b64_decode ( buffer , encoded ) ; <S2SV_EndBug> if ( ! TEST_CHECK ( len == sizeof ( clear ) - 1 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%zu\" , sizeof ( clear ) - 1 ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%zu\" , len ) ; } buffer [ len ] = '\\\\0' ; if ( ! TEST_CHECK ( strcmp ( buffer , clear ) == 0 ) ) { TEST_MSG ( \"Expected:<S2SV_blank>%s\" , clear ) ; TEST_MSG ( \"Actual<S2SV_blank><S2SV_blank>:<S2SV_blank>%s\" , buffer ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> buffer , encoded , sizeof ( buffer )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-7990\n\n```\nCWE-362 static struct rds_connection * __rds_conn_create ( struct net * net , __be32 laddr , __be32 faddr , struct rds_transport * trans , gfp_t gfp , int is_outgoing ) { struct rds_connection * conn , * parent = NULL ; struct hlist_head * head = rds_conn_bucket ( laddr , faddr ) ; struct rds_transport * loop_trans ; unsigned long flags ; int ret ; rcu_read_lock ( ) ; conn = rds_conn_lookup ( net , head , laddr , faddr , trans ) ; if ( conn && conn -> c_loopback && conn -> c_trans != & rds_loop_transport && laddr == faddr && ! is_outgoing ) { parent = conn ; conn = parent -> c_passive ; } rcu_read_unlock ( ) ; if ( conn ) goto out ; conn = kmem_cache_zalloc ( rds_conn_slab , gfp ) ; if ( ! conn ) { conn = ERR_PTR ( - ENOMEM ) ; goto out ; } INIT_HLIST_NODE ( & conn -> c_hash_node ) ; conn -> c_laddr = laddr ; conn -> c_faddr = faddr ; spin_lock_init ( & conn -> c_lock ) ; conn -> c_next_tx_seq = 1 ; rds_conn_net_set ( conn , net ) ; init_waitqueue_head ( & conn -> c_waitq ) ; INIT_LIST_HEAD ( & conn -> c_send_queue ) ; INIT_LIST_HEAD ( & conn -> c_retrans ) ; ret = rds_cong_get_maps ( conn ) ; if ( ret ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( ret ) ; goto out ; } loop_trans = rds_trans_get_preferred ( net , faddr ) ; if ( loop_trans ) { rds_trans_put ( loop_trans ) ; conn -> c_loopback = 1 ; if ( is_outgoing && trans -> t_prefer_loopback ) { trans = & rds_loop_transport ; } <S2SV_StartBug> } <S2SV_EndBug> if ( trans == NULL ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( - ENODEV ) ; goto out ; } conn -> c_trans = trans ; ret = trans -> conn_alloc ( conn , gfp ) ; if ( ret ) { kmem_cache_free ( rds_conn_slab , conn ) ; conn = ERR_PTR ( ret ) ; goto out ; } atomic_set ( & conn -> c_state , RDS_CONN_DOWN ) ; conn -> c_send_gen = 0 ; conn -> c_outgoing = ( is_outgoing ? 1 : 0 ) ; conn -> c_reconnect_jiffies = 0 ; INIT_DELAYED_WORK ( & conn -> c_send_w , rds_send_worker ) ; INIT_DELAYED_WORK ( & conn -> c_recv_w , rds_recv_worker ) ; INIT_DELAYED_WORK ( & conn -> c_conn_w , rds_connect_worker ) ; INIT_WORK ( & conn -> c_down_w , rds_shutdown_worker ) ; mutex_init ( & conn -> c_cm_lock ) ; conn -> c_flags = 0 ; rdsdebug ( \"allocated<S2SV_blank>conn<S2SV_blank>%p<S2SV_blank>for<S2SV_blank>%pI4<S2SV_blank>-><S2SV_blank>%pI4<S2SV_blank>over<S2SV_blank>%s<S2SV_blank>%s\\\\n\" , conn , & laddr , & faddr , trans -> t_name ? trans -> t_name : \"[unknown]\" , is_outgoing ? \"(outgoing)\" : \"\" ) ; spin_lock_irqsave ( & rds_conn_lock , flags ) ; if ( parent ) { if ( parent -> c_passive ) { trans -> conn_free ( conn -> c_transport_data ) ; kmem_cache_free ( rds_conn_slab , conn ) ; conn = parent -> c_passive ; } else { parent -> c_passive = conn ; rds_cong_add_conn ( conn ) ; rds_conn_count ++ ; } } else { struct rds_connection * found ; found = rds_conn_lookup ( net , head , laddr , faddr , trans ) ; if ( found ) { trans -> conn_free ( conn -> c_transport_data ) ; kmem_cache_free ( rds_conn_slab , conn ) ; conn = found ; } else { hlist_add_head_rcu ( & conn -> c_hash_node , head ) ; rds_cong_add_conn ( conn ) ; rds_conn_count ++ ; } } spin_unlock_irqrestore ( & rds_conn_lock , flags ) ; out : return conn ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> rds_loop_transport ; } <S2SV_ModEnd> } conn ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_iht4x4_16_add_c ( const int16_t * input , uint8_t * dest , int stride , <S2SV_EndBug> int tx_type ) { const transform_2d IHT_4 [ ] = { <S2SV_StartBug> { idct4 , idct4 } , <S2SV_EndBug> { iadst4 , idct4 } , { idct4 , iadst4 } , { iadst4 , iadst4 } } ; int i , j ; <S2SV_StartBug> int16_t out [ 4 * 4 ] ; <S2SV_EndBug> <S2SV_StartBug> int16_t * outptr = out ; <S2SV_EndBug> <S2SV_StartBug> int16_t temp_in [ 4 ] , temp_out [ 4 ] ; <S2SV_EndBug> for ( i = 0 ; i < 4 ; ++ i ) { IHT_4 [ tx_type ] . rows ( input , outptr ) ; input += 4 ; outptr += 4 ; } for ( i = 0 ; i < 4 ; ++ i ) { for ( j = 0 ; j < 4 ; ++ j ) temp_in [ j ] = out [ j * 4 + i ] ; IHT_4 [ tx_type ] . cols ( temp_in , temp_out ) ; <S2SV_StartBug> for ( j = 0 ; j < 4 ; ++ j ) <S2SV_EndBug> <S2SV_StartBug> dest [ j * stride + i ] = clip_pixel ( ROUND_POWER_OF_TWO ( temp_out [ j ] , 4 ) <S2SV_EndBug> <S2SV_StartBug> + dest [ j * stride + i ] ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_iht4x4_16_add_c ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> = { { idct4_c , idct4_c } , { iadst4_c , idct4_c } , { idct4_c , iadst4_c } , { iadst4_c , iadst4_c <S2SV_ModEnd> } } ; <S2SV_ModStart> , j ; tran_low_t <S2SV_ModEnd> out [ 4 <S2SV_ModStart> 4 ] ; tran_low_t <S2SV_ModEnd> * outptr = <S2SV_ModStart> = out ; tran_low_t <S2SV_ModEnd> temp_in [ 4 <S2SV_ModStart> ++ j ) { <S2SV_ModStart> i ] = clip_pixel_add ( <S2SV_ModEnd> dest [ j <S2SV_ModStart> + i ] , ROUND_POWER_OF_TWO ( temp_out [ j ] , 4 ) ) ; } <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 stmt_ty <S2SV_StartBug> Assign ( asdl_seq * targets , expr_ty value , int lineno , int col_offset , int <S2SV_EndBug> end_lineno , int end_col_offset , PyArena * arena ) { stmt_ty p ; if ( ! value ) { PyErr_SetString ( PyExc_ValueError , \"field<S2SV_blank>value<S2SV_blank>is<S2SV_blank>required<S2SV_blank>for<S2SV_blank>Assign\" ) ; return NULL ; } p = ( stmt_ty ) PyArena_Malloc ( arena , sizeof ( * p ) ) ; if ( ! p ) return NULL ; p -> kind = Assign_kind ; p -> v . Assign . targets = targets ; p -> v . Assign . value = value ; <S2SV_StartBug> p -> lineno = lineno ; <S2SV_EndBug> p -> col_offset = col_offset ; p -> end_lineno = end_lineno ; p -> end_col_offset = end_col_offset ; return p ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> expr_ty value , string type_comment , <S2SV_ModStart> ; p -> v . Assign . type_comment = type_comment ; p ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16347\n\n```\nCWE-119 static void WritePixel ( struct ngiflib_img * i , struct ngiflib_decode_context * context , u8 v ) { struct ngiflib_gif * p = i -> parent ; if ( v != i -> gce . transparent_color || ! i -> gce . transparent_flag ) { # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif * context -> frbuff_p . p8 = v ; # ifndef NGIFLIB_INDEXED_ONLY } else * context -> frbuff_p . p32 = GifIndexToTrueColor ( i -> palette , v ) ; # endif } if ( -- ( context -> Xtogo ) <= 0 ) { # ifdef NGIFLIB_ENABLE_CALLBACKS if ( p -> line_cb ) p -> line_cb ( p , context -> line_p , context -> curY ) ; # endif context -> Xtogo = i -> width ; switch ( context -> pass ) { case 0 : context -> curY ++ ; break ; case 1 : context -> curY += 8 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 4 ; } break ; case 2 : context -> curY += 8 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 2 ; } break ; case 3 : context -> curY += 4 ; <S2SV_StartBug> if ( context -> curY >= p -> height ) { <S2SV_EndBug> context -> pass ++ ; context -> curY = i -> posY + 1 ; } break ; case 4 : context -> curY += 2 ; <S2SV_StartBug> break ; <S2SV_EndBug> } # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif # ifdef NGIFLIB_ENABLE_CALLBACKS context -> line_p . p8 = p -> frbuff . p8 + ( u32 ) context -> curY * p -> width ; context -> frbuff_p . p8 = context -> line_p . p8 + i -> posX ; # else context -> frbuff_p . p8 = p -> frbuff . p8 + ( u32 ) context -> curY * p -> width + i -> posX ; # endif # ifndef NGIFLIB_INDEXED_ONLY } else { # ifdef NGIFLIB_ENABLE_CALLBACKS context -> line_p . p32 = p -> frbuff . p32 + ( u32 ) context -> curY * p -> width ; context -> frbuff_p . p32 = context -> line_p . p32 + i -> posX ; # else context -> frbuff_p . p32 = p -> frbuff . p32 + ( u32 ) context -> curY * p -> width + i -> posX ; # endif } # endif } else { # ifndef NGIFLIB_INDEXED_ONLY if ( p -> mode & NGIFLIB_MODE_INDEXED ) { # endif context -> frbuff_p . p8 ++ ; # ifndef NGIFLIB_INDEXED_ONLY } else { context -> frbuff_p . p32 ++ ; } # endif } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> += 8 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> += 8 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> += 4 ; <S2SV_ModEnd> break ; case <S2SV_ModStart> ; break ; } while ( context -> pass > 0 && context -> pass < 4 && context -> curY >= p -> height ) { switch ( ++ context -> pass ) { case 2 : context -> curY = i -> posY + 4 ; break ; case 3 : context -> curY = i -> posY + 2 ; break ; case 4 : context -> curY = i -> posY + 1 ; break ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-5221\n\n```\nCWE-22 char * compose_path ( ctrl_t * ctrl , char * path ) { struct stat st ; static char rpath [ PATH_MAX ] ; char * name , * ptr ; char dir [ PATH_MAX ] = { 0 } ; strlcpy ( dir , ctrl -> cwd , sizeof ( dir ) ) ; DBG ( \"Compose<S2SV_blank>path<S2SV_blank>from<S2SV_blank>cwd:<S2SV_blank>%s,<S2SV_blank>arg:<S2SV_blank>%s\" , ctrl -> cwd , path ? : \"\" ) ; if ( ! path || ! strlen ( path ) ) goto check ; if ( path ) { if ( path [ 0 ] != '/' ) { if ( dir [ strlen ( dir ) - 1 ] != '/' ) strlcat ( dir , \"/\" , sizeof ( dir ) ) ; } strlcat ( dir , path , sizeof ( dir ) ) ; } check : while ( ( ptr = strstr ( dir , \"//\" ) ) ) memmove ( ptr , & ptr [ 1 ] , strlen ( & ptr [ 1 ] ) + 1 ) ; if ( ! chrooted ) { size_t len = strlen ( home ) ; DBG ( \"Server<S2SV_blank>path<S2SV_blank>from<S2SV_blank>CWD:<S2SV_blank>%s\" , dir ) ; if ( len > 0 && home [ len - 1 ] == '/' ) len -- ; memmove ( dir + len , dir , strlen ( dir ) + 1 ) ; memcpy ( dir , home , len ) ; DBG ( \"Resulting<S2SV_blank>non-chroot<S2SV_blank>path:<S2SV_blank>%s\" , dir ) ; } if ( ! stat ( dir , & st ) && S_ISDIR ( st . st_mode ) ) { if ( ! realpath ( dir , rpath ) ) return NULL ; } else { name = basename ( path ) ; ptr = dirname ( dir ) ; memset ( rpath , 0 , sizeof ( rpath ) ) ; if ( ! realpath ( ptr , rpath ) ) { INFO ( \"Failed<S2SV_blank>realpath(%s):<S2SV_blank>%m\" , ptr ) ; return NULL ; } if ( rpath [ 1 ] != 0 ) strlcat ( rpath , \"/\" , sizeof ( rpath ) ) ; strlcat ( rpath , name , sizeof ( rpath ) ) ; } <S2SV_StartBug> if ( ! chrooted && strncmp ( dir , home , strlen ( home ) ) ) { <S2SV_EndBug> DBG ( \"Failed<S2SV_blank>non-chroot<S2SV_blank>dir:%s<S2SV_blank>vs<S2SV_blank>home:%s\" , dir , home ) ; return NULL ; } return rpath ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> && strncmp ( rpath <S2SV_ModEnd> , home ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18174\n\n```\nCWE-415 static int amd_gpio_remove ( struct platform_device * pdev ) { struct amd_gpio * gpio_dev ; gpio_dev = platform_get_drvdata ( pdev ) ; gpiochip_remove ( & gpio_dev -> gc ) ; <S2SV_StartBug> pinctrl_unregister ( gpio_dev -> pctrl ) ; <S2SV_EndBug> return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> gc ) ; <S2SV_ModEnd> return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5209\n\n```\nCWE-125 unsigned char * base64decode ( const char * buf , size_t * size ) { if ( ! buf || ! size ) return NULL ; size_t len = ( * size > 0 ) ? * size : strlen ( buf ) ; if ( len <= 0 ) return NULL ; unsigned char * outbuf = ( unsigned char * ) malloc ( ( len / 4 ) * 3 + 3 ) ; const char * ptr = buf ; int p = 0 ; <S2SV_StartBug> size_t l = 0 ; <S2SV_EndBug> do { <S2SV_StartBug> ptr += strspn ( ptr , \"\\\\r\\\\n\\\\t<S2SV_blank>\" ) ; <S2SV_EndBug> if ( * ptr == '\\\\0' || ptr >= buf + len ) { break ; } <S2SV_StartBug> l = strcspn ( ptr , \"\\\\r\\\\n\\\\t<S2SV_blank>\" ) ; <S2SV_EndBug> if ( l > 3 && ptr + l <= buf + len ) { p += base64decode_block ( outbuf + p , ptr , l ) ; ptr += l ; } else { break ; } } while ( 1 ) ; outbuf [ p ] = 0 ; * size = p ; return outbuf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; int wv , w1 , w2 , w3 , w4 ; int tmpval [ 4 ] ; int tmpcnt <S2SV_ModEnd> = 0 ; <S2SV_ModStart> ; do { while ( ptr < buf + len && ( * ptr == '<S2SV_blank>' || * ptr == '\\\\t' || * ptr == '\\\\n' || * ptr == '\\\\r' ) ) { ptr ++ ; } <S2SV_ModEnd> if ( * <S2SV_ModStart> break ; } if ( ( wv = base64_table [ ( int ) ( unsigned char ) * ptr ++ ] ) == - 1 ) { continue ; } tmpval [ tmpcnt ++ ] = wv ; if ( tmpcnt == 4 ) { tmpcnt = 0 ; w1 = tmpval [ 0 ] ; w2 = tmpval [ 1 ] ; w3 = tmpval [ 2 ] ; w4 = tmpval [ 3 ] ; if ( w2 >= 0 ) { outbuf [ p ++ ] = ( unsigned char ) ( ( ( w1 << 2 ) + ( w2 >> 4 ) ) & 0xFF ) ; } if ( w3 >= 0 ) { outbuf [ p ++ ] = ( unsigned char ) ( ( ( w2 << 4 ) + ( w3 >> 2 ) ) & 0xFF ) ; } if ( w4 >= 0 ) { outbuf [ p ++ ] = ( unsigned char ) ( ( ( w3 << 6 ) + w4 ) & 0xFF ) ; } <S2SV_ModEnd> } } while\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 static void do_perf_sw_event ( enum perf_type_id type , u32 event_id , <S2SV_StartBug> u64 nr , int nmi , <S2SV_EndBug> struct perf_sample_data * data , struct pt_regs * regs ) { struct swevent_htable * swhash = & __get_cpu_var ( swevent_htable ) ; struct perf_event * event ; struct hlist_node * node ; struct hlist_head * head ; rcu_read_lock ( ) ; head = find_swevent_head_rcu ( swhash , type , event_id ) ; if ( ! head ) goto end ; hlist_for_each_entry_rcu ( event , node , head , hlist_entry ) { if ( perf_swevent_match ( event , type , event_id , data , regs ) ) <S2SV_StartBug> perf_swevent_event ( event , nr , nmi , data , regs ) ; <S2SV_EndBug> } end : rcu_read_unlock ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , u64 nr <S2SV_ModEnd> , struct perf_sample_data <S2SV_ModStart> , nr , <S2SV_ModEnd> data , regs\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-17805\n\n```\nCWE-20 static int encrypt ( struct blkcipher_desc * desc , struct scatterlist * dst , struct scatterlist * src , unsigned int nbytes ) { struct blkcipher_walk walk ; struct crypto_blkcipher * tfm = desc -> tfm ; struct salsa20_ctx * ctx = crypto_blkcipher_ctx ( tfm ) ; int err ; blkcipher_walk_init ( & walk , dst , src , nbytes ) ; err = blkcipher_walk_virt_block ( desc , & walk , 64 ) ; salsa20_ivsetup ( ctx , walk . iv ) ; <S2SV_StartBug> if ( likely ( walk . nbytes == nbytes ) ) <S2SV_EndBug> { salsa20_encrypt_bytes ( ctx , walk . src . virt . addr , walk . dst . virt . addr , nbytes ) ; return blkcipher_walk_done ( desc , & walk , 0 ) ; } while ( walk . nbytes >= 64 ) { salsa20_encrypt_bytes ( ctx , walk . src . virt . addr , walk . dst . virt . addr , walk . nbytes - ( walk . nbytes % 64 ) ) ; err = blkcipher_walk_done ( desc , & walk , walk . nbytes % 64 ) ; } if ( walk . nbytes ) { salsa20_encrypt_bytes ( ctx , walk . src . virt . addr , walk . dst . virt . addr , walk . nbytes ) ; err = blkcipher_walk_done ( desc , & walk , 0 ) ; } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iv ) ; <S2SV_ModEnd> while ( walk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7962\n\n```\nCWE-369 static int iwgif_read_image ( struct iwgifrcontext * rctx ) { int retval = 0 ; struct lzwdeccontext d ; size_t subblocksize ; int has_local_ct ; int local_ct_size ; unsigned int root_codesize ; if ( ! iwgif_read ( rctx , rctx -> rbuf , 9 ) ) goto done ; rctx -> image_left = ( int ) iw_get_ui16le ( & rctx -> rbuf [ 0 ] ) ; rctx -> image_top = ( int ) iw_get_ui16le ( & rctx -> rbuf [ 2 ] ) ; rctx -> image_width = ( int ) iw_get_ui16le ( & rctx -> rbuf [ 4 ] ) ; <S2SV_StartBug> rctx -> image_height = ( int ) iw_get_ui16le ( & rctx -> rbuf [ 6 ] ) ; <S2SV_EndBug> rctx -> interlaced = ( int ) ( ( rctx -> rbuf [ 8 ] >> 6 ) & 0x01 ) ; has_local_ct = ( int ) ( ( rctx -> rbuf [ 8 ] >> 7 ) & 0x01 ) ; if ( has_local_ct ) { local_ct_size = ( int ) ( rctx -> rbuf [ 8 ] & 0x07 ) ; rctx -> colortable . num_entries = 1 << ( 1 + local_ct_size ) ; } if ( has_local_ct ) { if ( ! iwgif_read_color_table ( rctx , & rctx -> colortable ) ) goto done ; } if ( rctx -> has_transparency ) { rctx -> colortable . entry [ rctx -> trans_color_index ] . a = 0 ; } if ( ! iwgif_read ( rctx , rctx -> rbuf , 1 ) ) goto done ; root_codesize = ( unsigned int ) rctx -> rbuf [ 0 ] ; if ( root_codesize < 2 || root_codesize > 11 ) { iw_set_error ( rctx -> ctx , \"Invalid<S2SV_blank>LZW<S2SV_blank>minimum<S2SV_blank>code<S2SV_blank>size\" ) ; goto done ; } if ( ! iwgif_init_screen ( rctx ) ) goto done ; rctx -> total_npixels = ( size_t ) rctx -> image_width * ( size_t ) rctx -> image_height ; if ( ! iwgif_make_row_pointers ( rctx ) ) goto done ; lzw_init ( & d , root_codesize ) ; lzw_clear ( & d ) ; while ( 1 ) { if ( ! iwgif_read ( rctx , rctx -> rbuf , 1 ) ) goto done ; subblocksize = ( size_t ) rctx -> rbuf [ 0 ] ; if ( subblocksize == 0 ) break ; if ( ! iwgif_read ( rctx , rctx -> rbuf , subblocksize ) ) goto done ; if ( ! lzw_process_bytes ( rctx , & d , rctx -> rbuf , subblocksize ) ) goto done ; if ( d . eoi_flag ) break ; if ( rctx -> pixels_set >= rctx -> total_npixels ) break ; } retval = 1 ; done : return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ] ) ; if ( rctx -> image_width < 1 || rctx -> image_height < 1 ) { iw_set_error ( rctx -> ctx , \"Invalid<S2SV_blank>image<S2SV_blank>dimensions\" ) ; goto done ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13045\n\n```\nCWE-125 void vqp_print ( netdissect_options * ndo , register const u_char * pptr , register u_int len ) { const struct vqp_common_header_t * vqp_common_header ; const struct vqp_obj_tlv_t * vqp_obj_tlv ; const u_char * tptr ; uint16_t vqp_obj_len ; uint32_t vqp_obj_type ; <S2SV_StartBug> int tlen ; <S2SV_EndBug> uint8_t nitems ; tptr = pptr ; tlen = len ; vqp_common_header = ( const struct vqp_common_header_t * ) pptr ; <S2SV_StartBug> ND_TCHECK ( * vqp_common_header ) ; <S2SV_EndBug> if ( VQP_EXTRACT_VERSION ( vqp_common_header -> version ) != VQP_VERSION ) { ND_PRINT ( ( ndo , \"VQP<S2SV_blank>version<S2SV_blank>%u<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , VQP_EXTRACT_VERSION ( vqp_common_header -> version ) ) ) ; return ; } if ( ndo -> ndo_vflag < 1 ) { ND_PRINT ( ( ndo , \"VQPv%u<S2SV_blank>%s<S2SV_blank>Message,<S2SV_blank>error-code<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length<S2SV_blank>%u\" , VQP_EXTRACT_VERSION ( vqp_common_header -> version ) , tok2str ( vqp_msg_type_values , \"unknown<S2SV_blank>(%u)\" , vqp_common_header -> msg_type ) , tok2str ( vqp_error_code_values , \"unknown<S2SV_blank>(%u)\" , vqp_common_header -> error_code ) , vqp_common_header -> error_code , len ) ) ; return ; } nitems = vqp_common_header -> nitems ; ND_PRINT ( ( ndo , \"\\\\n\\\\tVQPv%u,<S2SV_blank>%s<S2SV_blank>Message,<S2SV_blank>error-code<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>seq<S2SV_blank>0x%08x,<S2SV_blank>items<S2SV_blank>%u,<S2SV_blank>length<S2SV_blank>%u\" , VQP_EXTRACT_VERSION ( vqp_common_header -> version ) , tok2str ( vqp_msg_type_values , \"unknown<S2SV_blank>(%u)\" , vqp_common_header -> msg_type ) , tok2str ( vqp_error_code_values , \"unknown<S2SV_blank>(%u)\" , vqp_common_header -> error_code ) , vqp_common_header -> error_code , EXTRACT_32BITS ( & vqp_common_header -> sequence ) , nitems , len ) ) ; tptr += sizeof ( const struct vqp_common_header_t ) ; tlen -= sizeof ( const struct vqp_common_header_t ) ; while ( nitems > 0 && tlen > 0 ) { vqp_obj_tlv = ( const struct vqp_obj_tlv_t * ) tptr ; <S2SV_StartBug> vqp_obj_type = EXTRACT_32BITS ( vqp_obj_tlv -> obj_type ) ; <S2SV_EndBug> vqp_obj_len = EXTRACT_16BITS ( vqp_obj_tlv -> obj_length ) ; tptr += sizeof ( struct vqp_obj_tlv_t ) ; tlen -= sizeof ( struct vqp_obj_tlv_t ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Object<S2SV_blank>(0x%08x),<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>value:<S2SV_blank>\" , tok2str ( vqp_obj_values , \"Unknown\" , vqp_obj_type ) , vqp_obj_type , vqp_obj_len ) ) ; if ( vqp_obj_type == 0 || vqp_obj_len == 0 ) { return ; } ND_TCHECK2 ( * tptr , vqp_obj_len ) ; <S2SV_StartBug> switch ( vqp_obj_type ) { <S2SV_EndBug> case VQP_OBJ_IP_ADDRESS : <S2SV_StartBug> ND_PRINT ( ( ndo , \"%s<S2SV_blank>(0x%08x)\" , ipaddr_string ( ndo , tptr ) , EXTRACT_32BITS ( tptr ) ) ) ; <S2SV_EndBug> break ; case VQP_OBJ_PORT_NAME : case VQP_OBJ_VLAN_NAME : case VQP_OBJ_VTP_DOMAIN : case VQP_OBJ_ETHERNET_PKT : safeputs ( ndo , tptr , vqp_obj_len ) ; break ; case VQP_OBJ_MAC_ADDRESS : <S2SV_StartBug> case VQP_OBJ_MAC_NULL : <S2SV_EndBug> ND_PRINT ( ( ndo , \"%s\" , etheraddr_string ( ndo , tptr ) ) ) ; break ; default : if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>\" , vqp_obj_len ) ; break ; } tptr += vqp_obj_len ; tlen -= vqp_obj_len ; nitems -- ; } return ; trunc : ND_PRINT ( ( ndo , \"\\\\n\\\\t[|VQP]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint32_t vqp_obj_type ; u_int <S2SV_ModEnd> tlen ; uint8_t <S2SV_ModStart> * vqp_common_header ) ; if ( sizeof ( struct vqp_common_header_t ) > tlen ) goto trunc <S2SV_ModStart> ) tptr ; ND_TCHECK ( * vqp_obj_tlv ) ; if ( sizeof ( struct vqp_obj_tlv_t ) > tlen ) goto trunc ; <S2SV_ModStart> vqp_obj_len ) ; if ( vqp_obj_len > tlen ) goto trunc ; <S2SV_ModStart> case VQP_OBJ_IP_ADDRESS : if ( vqp_obj_len != 4 ) goto trunc ; <S2SV_ModStart> case VQP_OBJ_MAC_NULL : if ( vqp_obj_len != ETHER_ADDR_LEN ) goto trunc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-4263\n\n```\nCWE-119 static int filter_frame ( AVFilterLink * inlink , AVFrame * frame ) { AVFilterContext * ctx = inlink -> dst ; FieldOrderContext * s = ctx -> priv ; AVFilterLink * outlink = ctx -> outputs [ 0 ] ; int h , plane , line_step , line_size , line ; uint8_t * data ; if ( ! frame -> interlaced_frame || frame -> top_field_first == s -> dst_tff ) return ff_filter_frame ( outlink , frame ) ; av_dlog ( ctx , \"picture<S2SV_blank>will<S2SV_blank>move<S2SV_blank>%s<S2SV_blank>one<S2SV_blank>line\\\\n\" , s -> dst_tff ? \"up\" : \"down\" ) ; h = frame -> height ; <S2SV_StartBug> for ( plane = 0 ; plane < 4 && frame -> data [ plane ] ; plane ++ ) { <S2SV_EndBug> line_step = frame -> linesize [ plane ] ; line_size = s -> line_size [ plane ] ; data = frame -> data [ plane ] ; if ( s -> dst_tff ) { for ( line = 0 ; line < h ; line ++ ) { if ( 1 + line < frame -> height ) { memcpy ( data , data + line_step , line_size ) ; } else { memcpy ( data , data - line_step - line_step , line_size ) ; } data += line_step ; } } else { data += ( h - 1 ) * line_step ; for ( line = h - 1 ; line >= 0 ; line -- ) { if ( line > 0 ) { memcpy ( data , data - line_step , line_size ) ; } else { memcpy ( data , data + line_step + line_step , line_size ) ; } data -= line_step ; } } } frame -> top_field_first = s -> dst_tff ; return ff_filter_frame ( outlink , frame ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> [ plane ] && frame -> linesize [ plane ]\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0879\n\n```\nCWE-400 NORET_TYPE void do_exit ( long code ) { struct task_struct * tsk = current ; int group_dead ; profile_task_exit ( tsk ) ; WARN_ON ( atomic_read ( & tsk -> fs_excl ) ) ; if ( unlikely ( in_interrupt ( ) ) ) panic ( \"Aiee,<S2SV_blank>killing<S2SV_blank>interrupt<S2SV_blank>handler!\" ) ; if ( unlikely ( ! tsk -> pid ) ) panic ( \"Attempted<S2SV_blank>to<S2SV_blank>kill<S2SV_blank>the<S2SV_blank>idle<S2SV_blank>task!\" ) ; tracehook_report_exit ( & code ) ; validate_creds_for_do_exit ( tsk ) ; if ( unlikely ( tsk -> flags & PF_EXITING ) ) { printk ( KERN_ALERT \"Fixing<S2SV_blank>recursive<S2SV_blank>fault<S2SV_blank>but<S2SV_blank>reboot<S2SV_blank>is<S2SV_blank>needed!\\\\n\" ) ; tsk -> flags |= PF_EXITPIDONE ; set_current_state ( TASK_UNINTERRUPTIBLE ) ; schedule ( ) ; } exit_irq_thread ( ) ; exit_signals ( tsk ) ; smp_mb ( ) ; spin_unlock_wait ( & tsk -> pi_lock ) ; if ( unlikely ( in_atomic ( ) ) ) printk ( KERN_INFO \"note:<S2SV_blank>%s[%d]<S2SV_blank>exited<S2SV_blank>with<S2SV_blank>preempt_count<S2SV_blank>%d\\\\n\" , current -> comm , task_pid_nr ( current ) , preempt_count ( ) ) ; acct_update_integrals ( tsk ) ; group_dead = atomic_dec_and_test ( & tsk -> signal -> live ) ; if ( group_dead ) { hrtimer_cancel ( & tsk -> signal -> real_timer ) ; exit_itimers ( tsk -> signal ) ; if ( tsk -> mm ) setmax_mm_hiwater_rss ( & tsk -> signal -> maxrss , tsk -> mm ) ; } acct_collect ( code , group_dead ) ; if ( group_dead ) tty_audit_exit ( ) ; if ( unlikely ( tsk -> audit_context ) ) audit_free ( tsk ) ; tsk -> exit_code = code ; taskstats_exit ( tsk , group_dead ) ; exit_mm ( tsk ) ; if ( group_dead ) acct_process ( ) ; trace_sched_process_exit ( tsk ) ; exit_sem ( tsk ) ; exit_files ( tsk ) ; exit_fs ( tsk ) ; check_stack_usage ( ) ; exit_thread ( ) ; cgroup_exit ( tsk , 1 ) ; if ( group_dead && tsk -> signal -> leader ) disassociate_ctty ( 1 ) ; module_put ( task_thread_info ( tsk ) -> exec_domain -> module ) ; proc_exit_connector ( tsk ) ; perf_event_exit_task ( tsk ) ; exit_notify ( tsk , group_dead ) ; # ifdef CONFIG_NUMA mpol_put ( tsk -> mempolicy ) ; tsk -> mempolicy = NULL ; # endif # ifdef CONFIG_FUTEX if ( unlikely ( current -> pi_state_cache ) ) kfree ( current -> pi_state_cache ) ; # endif debug_check_no_locks_held ( tsk ) ; tsk -> flags |= PF_EXITPIDONE ; if ( tsk -> io_context ) <S2SV_StartBug> exit_io_context ( ) ; <S2SV_EndBug> if ( tsk -> splice_pipe ) __free_pipe_info ( tsk -> splice_pipe ) ; validate_creds_for_do_exit ( tsk ) ; preempt_disable ( ) ; exit_rcu ( ) ; tsk -> state = TASK_DEAD ; schedule ( ) ; BUG ( ) ; for ( ; ; ) cpu_relax ( ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) exit_io_context ( tsk\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static void dns_resolver_describe ( const struct key * key , struct seq_file * m ) { seq_puts ( m , key -> description ) ; <S2SV_StartBug> if ( key_is_instantiated ( key ) ) { <S2SV_EndBug> int err = PTR_ERR ( key -> payload . data [ dns_key_error ] ) ; if ( err ) seq_printf ( m , \":<S2SV_blank>%d\" , err ) ; else seq_printf ( m , \":<S2SV_blank>%u\" , key -> datalen ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( key )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-763(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18075\n\n```\nCWE-763 <S2SV_StartBug> static void pcrypt_free ( struct crypto_instance * inst ) <S2SV_EndBug> { <S2SV_StartBug> struct pcrypt_instance_ctx * ctx = crypto_instance_ctx ( inst ) ; <S2SV_EndBug> crypto_drop_aead ( & ctx -> spawn ) ; kfree ( inst ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> pcrypt_free ( struct aead_instance <S2SV_ModEnd> * inst ) <S2SV_ModStart> * ctx = aead_instance_ctx <S2SV_ModEnd> ( inst )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-5548\n\n```\nCWE-119 static int atusb_read_reg ( struct atusb * atusb , uint8_t reg ) { struct usb_device * usb_dev = atusb -> usb_dev ; int ret ; <S2SV_StartBug> uint8_t value ; <S2SV_EndBug> dev_dbg ( & usb_dev -> dev , \"atusb:<S2SV_blank>reg<S2SV_blank>=<S2SV_blank>0x%x\\\\n\" , reg ) ; ret = atusb_control_msg ( atusb , usb_rcvctrlpipe ( usb_dev , 0 ) , ATUSB_REG_READ , ATUSB_REQ_FROM_DEV , <S2SV_StartBug> 0 , reg , & value , 1 , 1000 ) ; <S2SV_EndBug> <S2SV_StartBug> return ret >= 0 ? value : ret ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ret ; uint8_t * buffer ; uint8_t value ; buffer = kmalloc ( 1 , GFP_KERNEL ) ; if ( ! buffer ) return - ENOMEM <S2SV_ModEnd> ; dev_dbg ( <S2SV_ModStart> , reg , buffer <S2SV_ModEnd> , 1 , <S2SV_ModStart> 1000 ) ; if ( <S2SV_ModEnd> ret >= 0 <S2SV_ModStart> ret >= 0 ) { value = buffer [ 0 ] ; kfree ( buffer ) ; return value ; } else { kfree ( buffer ) ; return <S2SV_ModEnd> ret ; } <S2SV_ModStart> ret ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> int main_loop ( int argc , const char * * argv_ ) { <S2SV_EndBug> vpx_codec_ctx_t decoder ; char * fn = NULL ; int i ; uint8_t * buf = NULL ; size_t bytes_in_buffer = 0 , buffer_size = 0 ; FILE * infile ; int frame_in = 0 , frame_out = 0 , flipuv = 0 , noblit = 0 ; <S2SV_StartBug> int do_md5 = 0 , progress = 0 ; <S2SV_EndBug> int stop_after = 0 , postproc = 0 , summary = 0 , quiet = 1 ; int arg_skip = 0 ; <S2SV_StartBug> int ec_enabled = 0 ; <S2SV_EndBug> const VpxInterface * interface = NULL ; const VpxInterface * fourcc_interface = NULL ; uint64_t dx_time = 0 ; struct arg arg ; char * * argv , * * argi , * * argj ; int single_file ; int use_y4m = 1 ; <S2SV_StartBug> vpx_codec_dec_cfg_t cfg = { 0 } ; <S2SV_EndBug> # if CONFIG_VP8_DECODER vp8_postproc_cfg_t vp8_pp_cfg = { 0 } ; int vp8_dbg_color_ref_frame = 0 ; int vp8_dbg_color_mb_modes = 0 ; int vp8_dbg_color_b_modes = 0 ; int vp8_dbg_display_mv = 0 ; # endif int frames_corrupted = 0 ; int dec_flags = 0 ; int do_scale = 0 ; vpx_image_t * scaled_img = NULL ; <S2SV_StartBug> int frame_avail , got_data ; <S2SV_EndBug> int num_external_frame_buffers = 0 ; <S2SV_StartBug> struct ExternalFrameBufferList ext_fb_list = { 0 } ; <S2SV_EndBug> const char * outfile_pattern = NULL ; char outfile_name [ PATH_MAX ] = { 0 } ; FILE * outfile = NULL ; MD5Context md5_ctx ; unsigned char md5_digest [ 16 ] ; <S2SV_StartBug> struct VpxDecInputContext input = { 0 } ; <S2SV_EndBug> <S2SV_StartBug> struct VpxInputContext vpx_input_ctx = { 0 } ; <S2SV_EndBug> <S2SV_StartBug> struct WebmInputContext webm_ctx = { 0 } ; <S2SV_EndBug> <S2SV_StartBug> input . vpx_input_ctx = & vpx_input_ctx ; <S2SV_EndBug> input . webm_ctx = & webm_ctx ; exec_name = argv_ [ 0 ] ; argv = argv_dup ( argc - 1 , argv_ + 1 ) ; for ( argi = argj = argv ; ( * argj = * argi ) ; argi += arg . argv_step ) { memset ( & arg , 0 , sizeof ( arg ) ) ; arg . argv_step = 1 ; if ( arg_match ( & arg , & codecarg , argi ) ) { interface = get_vpx_decoder_by_name ( arg . val ) ; if ( ! interface ) die ( \"Error:<S2SV_blank>Unrecognized<S2SV_blank>argument<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>--codec\\\\n\" , arg . val ) ; } else if ( arg_match ( & arg , & looparg , argi ) ) { } else if ( arg_match ( & arg , & outputfile , argi ) ) outfile_pattern = arg . val ; else if ( arg_match ( & arg , & use_yv12 , argi ) ) { use_y4m = 0 ; flipuv = 1 ; <S2SV_StartBug> } else if ( arg_match ( & arg , & use_i420 , argi ) ) { <S2SV_EndBug> use_y4m = 0 ; flipuv = 0 ; <S2SV_StartBug> } else if ( arg_match ( & arg , & flipuvarg , argi ) ) <S2SV_EndBug> flipuv = 1 ; else if ( arg_match ( & arg , & noblitarg , argi ) ) noblit = 1 ; else if ( arg_match ( & arg , & progressarg , argi ) ) progress = 1 ; else if ( arg_match ( & arg , & limitarg , argi ) ) stop_after = arg_parse_uint ( & arg ) ; else if ( arg_match ( & arg , & skiparg , argi ) ) arg_skip = arg_parse_uint ( & arg ) ; else if ( arg_match ( & arg , & postprocarg , argi ) ) postproc = 1 ; else if ( arg_match ( & arg , & md5arg , argi ) ) do_md5 = 1 ; else if ( arg_match ( & arg , & summaryarg , argi ) ) summary = 1 ; else if ( arg_match ( & arg , & threadsarg , argi ) ) cfg . threads = arg_parse_uint ( & arg ) ; <S2SV_StartBug> else if ( arg_match ( & arg , & verbosearg , argi ) ) <S2SV_EndBug> quiet = 0 ; else if ( arg_match ( & arg , & scalearg , argi ) ) do_scale = 1 ; else if ( arg_match ( & arg , & fb_arg , argi ) ) <S2SV_StartBug> num_external_frame_buffers = arg_parse_uint ( & arg ) ; <S2SV_EndBug> # if CONFIG_VP8_DECODER else if ( arg_match ( & arg , & addnoise_level , argi ) ) { postproc = 1 ; vp8_pp_cfg . post_proc_flag |= VP8_ADDNOISE ; vp8_pp_cfg . noise_level = arg_parse_uint ( & arg ) ; } else if ( arg_match ( & arg , & demacroblock_level , argi ) ) { postproc = 1 ; vp8_pp_cfg . post_proc_flag |= VP8_DEMACROBLOCK ; vp8_pp_cfg . deblocking_level = arg_parse_uint ( & arg ) ; } else if ( arg_match ( & arg , & deblock , argi ) ) { postproc = 1 ; vp8_pp_cfg . post_proc_flag |= VP8_DEBLOCK ; } else if ( arg_match ( & arg , & mfqe , argi ) ) { postproc = 1 ; vp8_pp_cfg . post_proc_flag |= VP8_MFQE ; } else if ( arg_match ( & arg , & pp_debug_info , argi ) ) { unsigned int level = arg_parse_uint ( & arg ) ; postproc = 1 ; vp8_pp_cfg . post_proc_flag &= ~ 0x7 ; if ( level ) vp8_pp_cfg . post_proc_flag |= level ; } else if ( arg_match ( & arg , & pp_disp_ref_frame , argi ) ) { unsigned int flags = arg_parse_int ( & arg ) ; if ( flags ) { postproc = 1 ; vp8_dbg_color_ref_frame = flags ; } } else if ( arg_match ( & arg , & pp_disp_mb_modes , argi ) ) { unsigned int flags = arg_parse_int ( & arg ) ; if ( flags ) { postproc = 1 ; vp8_dbg_color_mb_modes = flags ; } } else if ( arg_match ( & arg , & pp_disp_b_modes , argi ) ) { unsigned int flags = arg_parse_int ( & arg ) ; if ( flags ) { postproc = 1 ; vp8_dbg_color_b_modes = flags ; } } else if ( arg_match ( & arg , & pp_disp_mvs , argi ) ) { unsigned int flags = arg_parse_int ( & arg ) ; if ( flags ) { postproc = 1 ; vp8_dbg_display_mv = flags ; } } else if ( arg_match ( & arg , & error_concealment , argi ) ) { ec_enabled = 1 ; } # endif else argj ++ ; } for ( argi = argv ; * argi ; argi ++ ) if ( argi [ 0 ] [ 0 ] == '-' && strlen ( argi [ 0 ] ) > 1 ) die ( \"Error:<S2SV_blank>Unrecognized<S2SV_blank>option<S2SV_blank>%s\\\\n\" , * argi ) ; fn = argv [ 0 ] ; <S2SV_StartBug> if ( ! fn ) <S2SV_EndBug> <S2SV_StartBug> usage_exit ( ) ; <S2SV_EndBug> infile = strcmp ( fn , \"-\" ) ? fopen ( fn , \"rb\" ) : set_binary_mode ( stdin ) ; if ( ! infile ) { <S2SV_StartBug> fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>file<S2SV_blank>\\'%s\\'\" , strcmp ( fn , \"-\" ) ? fn : \"stdin\" ) ; <S2SV_EndBug> return EXIT_FAILURE ; } # if CONFIG_OS_SUPPORT if ( ! outfile_pattern && isatty ( fileno ( stdout ) ) && ! do_md5 && ! noblit ) { fprintf ( stderr , \"Not<S2SV_blank>dumping<S2SV_blank>raw<S2SV_blank>video<S2SV_blank>to<S2SV_blank>your<S2SV_blank>terminal.<S2SV_blank>Use<S2SV_blank>\\'-o<S2SV_blank>-\\'<S2SV_blank>to<S2SV_blank>\" \"override.\\\\n\" ) ; return EXIT_FAILURE ; } # endif input . vpx_input_ctx -> file = infile ; if ( file_is_ivf ( input . vpx_input_ctx ) ) input . vpx_input_ctx -> file_type = FILE_TYPE_IVF ; # if CONFIG_WEBM_IO else if ( file_is_webm ( input . webm_ctx , input . vpx_input_ctx ) ) input . vpx_input_ctx -> file_type = FILE_TYPE_WEBM ; # endif else if ( file_is_raw ( input . vpx_input_ctx ) ) input . vpx_input_ctx -> file_type = FILE_TYPE_RAW ; else { fprintf ( stderr , \"Unrecognized<S2SV_blank>input<S2SV_blank>file<S2SV_blank>type.\\\\n\" ) ; # if ! CONFIG_WEBM_IO fprintf ( stderr , \"vpxdec<S2SV_blank>was<S2SV_blank>built<S2SV_blank>without<S2SV_blank>WebM<S2SV_blank>container<S2SV_blank>support.\\\\n\" ) ; # endif return EXIT_FAILURE ; } outfile_pattern = outfile_pattern ? outfile_pattern : \"-\" ; single_file = is_single_file ( outfile_pattern ) ; if ( ! noblit && single_file ) { generate_filename ( outfile_pattern , outfile_name , PATH_MAX , vpx_input_ctx . width , vpx_input_ctx . height , 0 ) ; if ( do_md5 ) MD5Init ( & md5_ctx ) ; else outfile = open_outfile ( outfile_name ) ; } if ( use_y4m && ! noblit ) { if ( ! single_file ) { fprintf ( stderr , \"YUV4MPEG2<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>with<S2SV_blank>output<S2SV_blank>patterns,\" <S2SV_StartBug> \"<S2SV_blank>try<S2SV_blank>--i420<S2SV_blank>or<S2SV_blank>--yv12.\\\\n\" ) ; <S2SV_EndBug> return EXIT_FAILURE ; } # if CONFIG_WEBM_IO if ( vpx_input_ctx . file_type == FILE_TYPE_WEBM ) { if ( webm_guess_framerate ( input . webm_ctx , input . vpx_input_ctx ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>guess<S2SV_blank>framerate<S2SV_blank>--<S2SV_blank>error<S2SV_blank>parsing<S2SV_blank>\" \"webm<S2SV_blank>file?\\\\n\" ) ; return EXIT_FAILURE ; } } # endif } fourcc_interface = get_vpx_decoder_by_fourcc ( vpx_input_ctx . fourcc ) ; if ( interface && fourcc_interface && interface != fourcc_interface ) warn ( \"Header<S2SV_blank>indicates<S2SV_blank>codec:<S2SV_blank>%s\\\\n\" , fourcc_interface -> name ) ; else interface = fourcc_interface ; if ( ! interface ) interface = get_vpx_decoder_by_index ( 0 ) ; dec_flags = ( postproc ? VPX_CODEC_USE_POSTPROC : 0 ) | <S2SV_StartBug> ( ec_enabled ? VPX_CODEC_USE_ERROR_CONCEALMENT : 0 ) ; <S2SV_EndBug> <S2SV_StartBug> if ( vpx_codec_dec_init ( & decoder , interface -> interface ( ) , & cfg , dec_flags ) ) { <S2SV_EndBug> fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>decoder:<S2SV_blank>%s\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; } if ( ! quiet ) fprintf ( stderr , \"%s\\\\n\" , decoder . name ) ; # if CONFIG_VP8_DECODER if ( vp8_pp_cfg . post_proc_flag && vpx_codec_control ( & decoder , VP8_SET_POSTPROC , & vp8_pp_cfg ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>configure<S2SV_blank>postproc:<S2SV_blank>%s\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; } if ( vp8_dbg_color_ref_frame && vpx_codec_control ( & decoder , VP8_SET_DBG_COLOR_REF_FRAME , vp8_dbg_color_ref_frame ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>configure<S2SV_blank>reference<S2SV_blank>block<S2SV_blank>visualizer:<S2SV_blank>%s\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; } if ( vp8_dbg_color_mb_modes && vpx_codec_control ( & decoder , VP8_SET_DBG_COLOR_MB_MODES , vp8_dbg_color_mb_modes ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>configure<S2SV_blank>macro<S2SV_blank>block<S2SV_blank>visualizer:<S2SV_blank>%s\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; } if ( vp8_dbg_color_b_modes && vpx_codec_control ( & decoder , VP8_SET_DBG_COLOR_B_MODES , vp8_dbg_color_b_modes ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>configure<S2SV_blank>block<S2SV_blank>visualizer:<S2SV_blank>%s\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; } if ( vp8_dbg_display_mv && vpx_codec_control ( & decoder , VP8_SET_DBG_DISPLAY_MV , vp8_dbg_display_mv ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>configure<S2SV_blank>motion<S2SV_blank>vector<S2SV_blank>visualizer:<S2SV_blank>%s\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; } # endif if ( arg_skip ) fprintf ( stderr , \"Skipping<S2SV_blank>first<S2SV_blank>%d<S2SV_blank>frames.\\\\n\" , arg_skip ) ; while ( arg_skip ) { if ( read_frame ( & input , & buf , & bytes_in_buffer , & buffer_size ) ) break ; arg_skip -- ; } if ( num_external_frame_buffers > 0 ) { ext_fb_list . num_external_frame_buffers = num_external_frame_buffers ; ext_fb_list . ext_fb = ( struct ExternalFrameBuffer * ) calloc ( num_external_frame_buffers , sizeof ( * ext_fb_list . ext_fb ) ) ; if ( vpx_codec_set_frame_buffer_functions ( & decoder , get_vp9_frame_buffer , release_vp9_frame_buffer , & ext_fb_list ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>configure<S2SV_blank>external<S2SV_blank>frame<S2SV_blank>buffers:<S2SV_blank>%s\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; } } frame_avail = 1 ; got_data = 0 ; while ( frame_avail || got_data ) { vpx_codec_iter_t iter = NULL ; vpx_image_t * img ; struct vpx_usec_timer timer ; <S2SV_StartBug> int corrupted ; <S2SV_EndBug> frame_avail = 0 ; if ( ! stop_after || frame_in < stop_after ) { if ( ! read_frame ( & input , & buf , & bytes_in_buffer , & buffer_size ) ) { frame_avail = 1 ; frame_in ++ ; vpx_usec_timer_start ( & timer ) ; if ( vpx_codec_decode ( & decoder , buf , ( unsigned int ) bytes_in_buffer , NULL , 0 ) ) { const char * detail = vpx_codec_error_detail ( & decoder ) ; warn ( \"Failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>frame<S2SV_blank>%d:<S2SV_blank>%s\" , frame_in , vpx_codec_error ( & decoder ) ) ; if ( detail ) warn ( \"Additional<S2SV_blank>information:<S2SV_blank>%s\" , detail ) ; <S2SV_StartBug> goto fail ; <S2SV_EndBug> } vpx_usec_timer_mark ( & timer ) ; dx_time += vpx_usec_timer_elapsed ( & timer ) ; <S2SV_StartBug> } <S2SV_EndBug> } <S2SV_StartBug> vpx_usec_timer_start ( & timer ) ; <S2SV_EndBug> got_data = 0 ; if ( ( img = vpx_codec_get_frame ( & decoder , & iter ) ) ) { ++ frame_out ; got_data = 1 ; } vpx_usec_timer_mark ( & timer ) ; dx_time += ( unsigned int ) vpx_usec_timer_elapsed ( & timer ) ; <S2SV_StartBug> if ( vpx_codec_control ( & decoder , VP8D_GET_FRAME_CORRUPTED , & corrupted ) ) { <S2SV_EndBug> <S2SV_StartBug> warn ( \"Failed<S2SV_blank>VP8_GET_FRAME_CORRUPTED:<S2SV_blank>%s\" , vpx_codec_error ( & decoder ) ) ; <S2SV_EndBug> goto fail ; } frames_corrupted += corrupted ; if ( progress ) show_progress ( frame_in , frame_out , dx_time ) ; if ( ! noblit && img ) { const int PLANES_YUV [ ] = { VPX_PLANE_Y , VPX_PLANE_U , VPX_PLANE_V } ; const int PLANES_YVU [ ] = { VPX_PLANE_Y , VPX_PLANE_V , VPX_PLANE_U } ; const int * planes = flipuv ? PLANES_YVU : PLANES_YUV ; if ( do_scale ) { if ( frame_out == 1 ) { int display_width = vpx_input_ctx . width ; int display_height = vpx_input_ctx . height ; if ( ! display_width || ! display_height ) { int display_size [ 2 ] ; if ( vpx_codec_control ( & decoder , VP9D_GET_DISPLAY_SIZE , display_size ) ) { display_width = img -> d_w ; display_height = img -> d_h ; } else { display_width = display_size [ 0 ] ; display_height = display_size [ 1 ] ; } } <S2SV_StartBug> scaled_img = vpx_img_alloc ( NULL , VPX_IMG_FMT_I420 , display_width , <S2SV_EndBug> <S2SV_StartBug> display_height , 16 ) ; <S2SV_EndBug> } if ( img -> d_w != scaled_img -> d_w || img -> d_h != scaled_img -> d_h ) { <S2SV_StartBug> vpx_image_scale ( img , scaled_img , kFilterBox ) ; <S2SV_EndBug> img = scaled_img ; <S2SV_StartBug> } <S2SV_EndBug> } if ( single_file ) { if ( use_y4m ) { char buf [ Y4M_BUFFER_SIZE ] = { 0 } ; size_t len = 0 ; <S2SV_StartBug> if ( frame_out == 1 ) { <S2SV_EndBug> len = y4m_write_file_header ( buf , sizeof ( buf ) , vpx_input_ctx . width , vpx_input_ctx . height , <S2SV_StartBug> & vpx_input_ctx . framerate , img -> fmt ) ; <S2SV_EndBug> if ( do_md5 ) { MD5Update ( & md5_ctx , ( md5byte * ) buf , ( unsigned int ) len ) ; } else { fputs ( buf , outfile ) ; } } len = y4m_write_frame_header ( buf , sizeof ( buf ) ) ; if ( do_md5 ) { MD5Update ( & md5_ctx , ( md5byte * ) buf , ( unsigned int ) len ) ; } else { fputs ( buf , outfile ) ; } <S2SV_StartBug> } <S2SV_EndBug> if ( do_md5 ) { update_image_md5 ( img , planes , & md5_ctx ) ; } else { write_image_file ( img , planes , outfile ) ; } } else { generate_filename ( outfile_pattern , outfile_name , PATH_MAX , img -> d_w , img -> d_h , frame_in ) ; if ( do_md5 ) { MD5Init ( & md5_ctx ) ; update_image_md5 ( img , planes , & md5_ctx ) ; MD5Final ( md5_digest , & md5_ctx ) ; print_md5 ( md5_digest , outfile_name ) ; } else { outfile = open_outfile ( outfile_name ) ; write_image_file ( img , planes , outfile ) ; fclose ( outfile ) ; } } } <S2SV_StartBug> if ( stop_after && frame_in >= stop_after ) <S2SV_EndBug> break ; } if ( summary || progress ) { show_progress ( frame_in , frame_out , dx_time ) ; fprintf ( stderr , \"\\\\n\" ) ; } if ( frames_corrupted ) fprintf ( stderr , \"WARNING:<S2SV_blank>%d<S2SV_blank>frames<S2SV_blank>corrupted.\\\\n\" , frames_corrupted ) ; fail : if ( vpx_codec_destroy ( & decoder ) ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>destroy<S2SV_blank>decoder:<S2SV_blank>%s\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; } if ( ! noblit && single_file ) { if ( do_md5 ) { MD5Final ( md5_digest , & md5_ctx ) ; print_md5 ( md5_digest , outfile_name ) ; } else { fclose ( outfile ) ; } } # if CONFIG_WEBM_IO if ( input . vpx_input_ctx -> file_type == FILE_TYPE_WEBM ) webm_free ( input . webm_ctx ) ; # endif if ( input . vpx_input_ctx -> file_type != FILE_TYPE_WEBM ) free ( buf ) ; <S2SV_StartBug> if ( scaled_img ) vpx_img_free ( scaled_img ) ; <S2SV_EndBug> for ( i = 0 ; i < ext_fb_list . num_external_frame_buffers ; ++ i ) { free ( ext_fb_list . ext_fb [ i ] . data ) ; } free ( ext_fb_list . ext_fb ) ; fclose ( infile ) ; free ( argv ) ; return frames_corrupted ? EXIT_FAILURE : EXIT_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> <S2SV_null> static <S2SV_ModStart> progress = 0 , frame_parallel = 0 <S2SV_ModStart> ; int ec_enabled = 0 ; int keep_going <S2SV_ModStart> = 1 ; int opt_yv12 = 0 ; int opt_i420 = 0 ; <S2SV_ModStart> = { 0 , 0 , 0 } ; # if CONFIG_VP9_HIGHBITDEPTH int output_bit_depth = 0 ; # endif <S2SV_ModEnd> # if CONFIG_VP8_DECODER <S2SV_ModStart> = NULL ; # if CONFIG_VP9_HIGHBITDEPTH vpx_image_t * img_shifted = NULL ; # endif <S2SV_ModStart> frame_avail , got_data , flush_decoder = 0 <S2SV_ModStart> = { 0 , NULL <S2SV_ModStart> input = { NULL , NULL <S2SV_ModEnd> } ; struct <S2SV_ModStart> struct VpxInputContext vpx_input_ctx ; # if CONFIG_WEBM_IO <S2SV_ModEnd> struct WebmInputContext webm_ctx <S2SV_ModStart> struct WebmInputContext webm_ctx ; memset ( & ( webm_ctx ) , 0 , sizeof ( webm_ctx ) ) <S2SV_ModEnd> ; input . <S2SV_ModStart> ; input . webm_ctx = & webm_ctx ; # endif input . <S2SV_ModStart> = & vpx_input_ctx <S2SV_ModEnd> ; exec_name = <S2SV_ModStart> = 1 ; opt_yv12 = 1 ; # if CONFIG_VP9_HIGHBITDEPTH output_bit_depth = 8 ; # endif <S2SV_ModStart> = 0 ; opt_i420 = 1 ; <S2SV_ModStart> arg , & rawvideo , argi ) ) { use_y4m = 0 ; } else if ( arg_match ( & arg , & <S2SV_ModStart> arg ) ; # if CONFIG_VP9_DECODER || CONFIG_VP10_DECODER <S2SV_ModStart> arg , & frameparallelarg , argi ) ) frame_parallel = 1 ; # endif else if ( arg_match ( & arg , & <S2SV_ModStart> arg ) ; else if ( arg_match ( & arg , & continuearg , argi ) ) keep_going = 1 ; # if CONFIG_VP9_HIGHBITDEPTH else if ( arg_match ( & arg , & outbitdeptharg , argi ) ) { output_bit_depth = arg_parse_uint ( & arg ) ; } # endif <S2SV_ModStart> ! fn ) { free ( argv ) ; <S2SV_ModStart> ( ) ; } <S2SV_ModStart> infile ) { fatal ( \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>input<S2SV_blank>file<S2SV_blank>\\'%s\\'\" <S2SV_ModEnd> , strcmp ( <S2SV_ModStart> : \"stdin\" ) <S2SV_ModEnd> ; } # <S2SV_ModStart> stderr , \"YUV4MPEG2<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>with<S2SV_blank>output<S2SV_blank>patterns,\" \"<S2SV_blank>try<S2SV_blank>--i420<S2SV_blank>or<S2SV_blank>--yv12<S2SV_blank>or<S2SV_blank>--rawvideo.\\\\n\" <S2SV_ModEnd> ) ; return <S2SV_ModStart> : 0 ) | ( frame_parallel ? VPX_CODEC_USE_FRAME_THREADING : 0 ) <S2SV_ModStart> , interface -> codec_interface ( ) , <S2SV_ModEnd> & cfg , <S2SV_ModStart> ; int corrupted = 0 <S2SV_ModStart> detail ) ; if ( ! keep_going ) <S2SV_ModStart> ) ; } else { flush_decoder = 1 ; } } else { flush_decoder = 1 ; <S2SV_ModStart> timer ) ; if ( flush_decoder ) { if ( vpx_codec_decode ( & decoder , NULL , 0 , NULL , 0 ) ) { warn ( \"Failed<S2SV_blank>to<S2SV_blank>flush<S2SV_blank>decoder:<S2SV_blank>%s\" , vpx_codec_error ( & decoder ) ) ; } } <S2SV_ModStart> ; if ( ! frame_parallel && <S2SV_ModStart> ) ) ; if ( ! keep_going ) <S2SV_ModStart> ( NULL , img -> fmt <S2SV_ModEnd> , display_width , <S2SV_ModStart> , 16 ) ; scaled_img -> bit_depth = img -> bit_depth <S2SV_ModStart> d_h ) { # if CONFIG_LIBYUV libyuv_scale <S2SV_ModEnd> ( img , <S2SV_ModStart> = scaled_img ; # else fprintf ( stderr , \"Failed<S2SV_blank><S2SV_blank>to<S2SV_blank>scale<S2SV_blank>output<S2SV_blank>frame:<S2SV_blank>%s.\\\\n\" \"Scaling<S2SV_blank>is<S2SV_blank>disabled<S2SV_blank>in<S2SV_blank>this<S2SV_blank>configuration.<S2SV_blank>\" \"To<S2SV_blank>enable<S2SV_blank>scaling,<S2SV_blank>configure<S2SV_blank>with<S2SV_blank>--enable-libyuv\\\\n\" , vpx_codec_error ( & decoder ) ) ; return EXIT_FAILURE ; # endif } } # if CONFIG_VP9_HIGHBITDEPTH if ( ! output_bit_depth ) { output_bit_depth = img -> bit_depth ; } if ( output_bit_depth != img -> bit_depth ) { const vpx_img_fmt_t shifted_fmt = output_bit_depth == 8 ? img -> fmt ^ ( img -> fmt & VPX_IMG_FMT_HIGHBITDEPTH ) : img -> fmt | VPX_IMG_FMT_HIGHBITDEPTH ; if ( img_shifted && img_shifted_realloc_required ( img , img_shifted , shifted_fmt ) ) { vpx_img_free ( img_shifted ) ; img_shifted = NULL ; } if ( ! img_shifted ) { img_shifted = vpx_img_alloc ( NULL , shifted_fmt , img -> d_w , img -> d_h , 16 ) ; img_shifted -> bit_depth = output_bit_depth ; } if ( output_bit_depth > img -> bit_depth ) { vpx_img_upshift ( img_shifted , img , output_bit_depth - img -> bit_depth ) ; } else { vpx_img_downshift ( img_shifted , img , img -> bit_depth - output_bit_depth ) ; } img = img_shifted ; } # endif <S2SV_ModEnd> if ( single_file <S2SV_ModStart> ; if ( img -> fmt == VPX_IMG_FMT_I440 || img -> fmt == VPX_IMG_FMT_I44016 ) { fprintf ( stderr , \"Cannot<S2SV_blank>produce<S2SV_blank>y4m<S2SV_blank>output<S2SV_blank>for<S2SV_blank>440<S2SV_blank>sampling.\\\\n\" ) ; goto fail ; } if ( <S2SV_ModStart> img -> fmt , img -> bit_depth <S2SV_ModStart> ; } } else { if ( frame_out == 1 ) { if ( opt_i420 ) { if ( img -> fmt != VPX_IMG_FMT_I420 && img -> fmt != VPX_IMG_FMT_I42016 ) { fprintf ( stderr , \"Cannot<S2SV_blank>produce<S2SV_blank>i420<S2SV_blank>output<S2SV_blank>for<S2SV_blank>bit-stream.\\\\n\" ) ; goto fail ; } } if ( opt_yv12 ) { if ( ( img -> fmt != VPX_IMG_FMT_I420 && img -> fmt != VPX_IMG_FMT_YV12 ) || img -> bit_depth != 8 ) { fprintf ( stderr , \"Cannot<S2SV_blank>produce<S2SV_blank>yv12<S2SV_blank>output<S2SV_blank>for<S2SV_blank>bit-stream.\\\\n\" ) ; goto fail ; } } } } <S2SV_ModStart> } } } <S2SV_ModEnd> } if ( <S2SV_ModStart> scaled_img ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( img_shifted ) vpx_img_free ( img_shifted ) ; # endif\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11508\n\n```\nCWE-200 int compat_get_timex ( struct timex * txc , const struct compat_timex __user * utp ) { struct compat_timex tx32 ; <S2SV_StartBug> if ( copy_from_user ( & tx32 , utp , sizeof ( struct compat_timex ) ) ) <S2SV_EndBug> return - EFAULT ; txc -> modes = tx32 . modes ; txc -> offset = tx32 . offset ; txc -> freq = tx32 . freq ; txc -> maxerror = tx32 . maxerror ; txc -> esterror = tx32 . esterror ; txc -> status = tx32 . status ; txc -> constant = tx32 . constant ; txc -> precision = tx32 . precision ; txc -> tolerance = tx32 . tolerance ; txc -> time . tv_sec = tx32 . time . tv_sec ; txc -> time . tv_usec = tx32 . time . tv_usec ; txc -> tick = tx32 . tick ; txc -> ppsfreq = tx32 . ppsfreq ; txc -> jitter = tx32 . jitter ; txc -> shift = tx32 . shift ; txc -> stabil = tx32 . stabil ; txc -> jitcnt = tx32 . jitcnt ; txc -> calcnt = tx32 . calcnt ; txc -> errcnt = tx32 . errcnt ; txc -> stbcnt = tx32 . stbcnt ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> compat_timex tx32 ; memset ( txc , 0 , sizeof ( struct timex ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11664\n\n```\nCWE-125 <S2SV_StartBug> uint32_t _WM_SetupMidiEvent ( struct _mdi * mdi , uint8_t * event_data , uint8_t running_event ) { <S2SV_EndBug> uint32_t ret_cnt = 0 ; uint8_t command = 0 ; uint8_t channel = 0 ; uint8_t data_1 = 0 ; uint8_t data_2 = 0 ; char * text = NULL ; <S2SV_StartBug> if ( event_data [ 0 ] >= 0x80 ) { <S2SV_EndBug> command = * event_data & 0xf0 ; channel = * event_data ++ & 0x0f ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } else { command = running_event & 0xf0 ; channel = running_event & 0x0f ; } switch ( command ) { case 0x80 : _SETUP_NOTEOFF : <S2SV_StartBug> data_1 = * event_data ++ ; <S2SV_EndBug> data_2 = * event_data ++ ; _WM_midi_setup_noteoff ( mdi , channel , data_1 , data_2 ) ; ret_cnt += 2 ; break ; case 0x90 : if ( event_data [ 1 ] == 0 ) goto _SETUP_NOTEOFF ; <S2SV_StartBug> data_1 = * event_data ++ ; <S2SV_EndBug> data_2 = * event_data ++ ; midi_setup_noteon ( mdi , channel , data_1 , data_2 ) ; ret_cnt += 2 ; break ; case 0xa0 : <S2SV_StartBug> data_1 = * event_data ++ ; <S2SV_EndBug> data_2 = * event_data ++ ; midi_setup_aftertouch ( mdi , channel , data_1 , data_2 ) ; ret_cnt += 2 ; break ; case 0xb0 : <S2SV_StartBug> data_1 = * event_data ++ ; <S2SV_EndBug> data_2 = * event_data ++ ; midi_setup_control ( mdi , channel , data_1 , data_2 ) ; ret_cnt += 2 ; break ; case 0xc0 : data_1 = * event_data ++ ; midi_setup_patch ( mdi , channel , data_1 ) ; ret_cnt ++ ; break ; case 0xd0 : data_1 = * event_data ++ ; midi_setup_channel_pressure ( mdi , channel , data_1 ) ; ret_cnt ++ ; break ; case 0xe0 : <S2SV_StartBug> data_1 = * event_data ++ ; <S2SV_EndBug> data_2 = * event_data ++ ; midi_setup_pitch ( mdi , channel , ( ( data_2 << 7 ) | ( data_1 & 0x7f ) ) ) ; ret_cnt += 2 ; break ; case 0xf0 : if ( channel == 0x0f ) { uint32_t tmp_length = 0 ; if ( ( event_data [ 0 ] == 0x00 ) && ( event_data [ 1 ] == 0x02 ) ) { <S2SV_StartBug> midi_setup_sequenceno ( mdi , ( ( event_data [ 2 ] << 8 ) + event_data [ 3 ] ) ) ; <S2SV_EndBug> ret_cnt += 4 ; } else if ( event_data [ 0 ] == 0x01 ) { event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> if ( * event_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> text = malloc ( tmp_length + 1 ) ; <S2SV_EndBug> memcpy ( text , event_data , tmp_length ) ; text [ tmp_length ] = '\\\\0' ; midi_setup_text ( mdi , text ) ; ret_cnt += tmp_length ; } else if ( event_data [ 0 ] == 0x02 ) { event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> if ( * event_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> if ( mdi -> extra_info . copyright ) { mdi -> extra_info . copyright = realloc ( mdi -> extra_info . copyright , ( strlen ( mdi -> extra_info . copyright ) + 1 + tmp_length + 1 ) ) ; memcpy ( & mdi -> extra_info . copyright [ strlen ( mdi -> extra_info . copyright ) + 1 ] , event_data , tmp_length ) ; mdi -> extra_info . copyright [ strlen ( mdi -> extra_info . copyright ) + 1 + tmp_length ] = '\\\\0' ; mdi -> extra_info . copyright [ strlen ( mdi -> extra_info . copyright ) ] = '\\\\n' ; } else { mdi -> extra_info . copyright = malloc ( tmp_length + 1 ) ; memcpy ( mdi -> extra_info . copyright , event_data , tmp_length ) ; mdi -> extra_info . copyright [ tmp_length ] = '\\\\0' ; } text = malloc ( tmp_length + 1 ) ; memcpy ( text , event_data , tmp_length ) ; text [ tmp_length ] = '\\\\0' ; midi_setup_copyright ( mdi , text ) ; ret_cnt += tmp_length ; } else if ( event_data [ 0 ] == 0x03 ) { event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> if ( * event_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> text = malloc ( tmp_length + 1 ) ; <S2SV_EndBug> memcpy ( text , event_data , tmp_length ) ; text [ tmp_length ] = '\\\\0' ; midi_setup_trackname ( mdi , text ) ; ret_cnt += tmp_length ; } else if ( event_data [ 0 ] == 0x04 ) { event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> if ( * event_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> text = malloc ( tmp_length + 1 ) ; <S2SV_EndBug> memcpy ( text , event_data , tmp_length ) ; text [ tmp_length ] = '\\\\0' ; midi_setup_instrumentname ( mdi , text ) ; ret_cnt += tmp_length ; } else if ( event_data [ 0 ] == 0x05 ) { event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> if ( * event_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> text = malloc ( tmp_length + 1 ) ; <S2SV_EndBug> memcpy ( text , event_data , tmp_length ) ; text [ tmp_length ] = '\\\\0' ; midi_setup_lyric ( mdi , text ) ; ret_cnt += tmp_length ; } else if ( event_data [ 0 ] == 0x06 ) { event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> if ( * event_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> text = malloc ( tmp_length + 1 ) ; <S2SV_EndBug> memcpy ( text , event_data , tmp_length ) ; text [ tmp_length ] = '\\\\0' ; midi_setup_marker ( mdi , text ) ; ret_cnt += tmp_length ; } else if ( event_data [ 0 ] == 0x07 ) { event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> if ( * event_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> text = malloc ( tmp_length + 1 ) ; <S2SV_EndBug> memcpy ( text , event_data , tmp_length ) ; text [ tmp_length ] = '\\\\0' ; midi_setup_cuepoint ( mdi , text ) ; ret_cnt += tmp_length ; <S2SV_StartBug> } else if ( ( event_data [ 0 ] == 0x20 ) && ( event_data [ 1 ] == 0x01 ) ) { <S2SV_EndBug> midi_setup_channelprefix ( mdi , event_data [ 2 ] ) ; ret_cnt += 3 ; } else if ( ( event_data [ 0 ] == 0x21 ) && ( event_data [ 1 ] == 0x01 ) ) { <S2SV_StartBug> midi_setup_portprefix ( mdi , event_data [ 2 ] ) ; <S2SV_EndBug> ret_cnt += 3 ; } else if ( ( event_data [ 0 ] == 0x2F ) && ( event_data [ 1 ] == 0x00 ) ) { <S2SV_StartBug> _WM_midi_setup_endoftrack ( mdi ) ; <S2SV_EndBug> ret_cnt += 2 ; } else if ( ( event_data [ 0 ] == 0x51 ) && ( event_data [ 1 ] == 0x03 ) ) { <S2SV_StartBug> _WM_midi_setup_tempo ( mdi , ( ( event_data [ 2 ] << 16 ) + ( event_data [ 3 ] << 8 ) + event_data [ 4 ] ) ) ; <S2SV_EndBug> ret_cnt += 5 ; <S2SV_StartBug> } else if ( ( event_data [ 0 ] == 0x54 ) && ( event_data [ 1 ] == 0x05 ) ) { <S2SV_EndBug> midi_setup_smpteoffset ( mdi , ( ( event_data [ 3 ] << 24 ) + ( event_data [ 4 ] << 16 ) + ( event_data [ 5 ] << 8 ) + event_data [ 6 ] ) ) ; mdi -> events [ mdi -> events_size - 1 ] . event_data . channel = event_data [ 2 ] ; ret_cnt += 7 ; } else if ( ( event_data [ 0 ] == 0x58 ) && ( event_data [ 1 ] == 0x04 ) ) { <S2SV_StartBug> midi_setup_timesignature ( mdi , ( ( event_data [ 2 ] << 24 ) + ( event_data [ 3 ] << 16 ) + ( event_data [ 4 ] << 8 ) + event_data [ 5 ] ) ) ; <S2SV_EndBug> ret_cnt += 6 ; } else if ( ( event_data [ 0 ] == 0x59 ) && ( event_data [ 1 ] == 0x02 ) ) { <S2SV_StartBug> midi_setup_keysignature ( mdi , ( ( event_data [ 2 ] << 8 ) + event_data [ 3 ] ) ) ; <S2SV_EndBug> ret_cnt += 4 ; } else { event_data ++ ; ret_cnt ++ ; <S2SV_StartBug> if ( * event_data > 0x7f ) { <S2SV_EndBug> <S2SV_StartBug> do { <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> tmp_length = ( tmp_length << 7 ) + ( * event_data & 0x7f ) ; ret_cnt ++ ; ret_cnt += tmp_length ; <S2SV_StartBug> } <S2SV_EndBug> } else if ( ( channel == 0 ) || ( channel == 7 ) ) { uint32_t sysex_len = 0 ; uint8_t * sysex_store = NULL ; if ( * event_data > 0x7f ) { <S2SV_StartBug> do { <S2SV_EndBug> sysex_len = ( sysex_len << 7 ) + ( * event_data & 0x7F ) ; event_data ++ ; <S2SV_StartBug> ret_cnt ++ ; <S2SV_EndBug> } while ( * event_data > 0x7f ) ; <S2SV_StartBug> } <S2SV_EndBug> sysex_len = ( sysex_len << 7 ) + ( * event_data & 0x7F ) ; event_data ++ ; <S2SV_StartBug> if ( ! sysex_len ) break ; <S2SV_EndBug> ret_cnt ++ ; sysex_store = malloc ( sizeof ( uint8_t ) * sysex_len ) ; memcpy ( sysex_store , event_data , sysex_len ) ; if ( sysex_store [ sysex_len - 1 ] == 0xF7 ) { uint8_t rolandsysexid [ ] = { 0x41 , 0x10 , 0x42 , 0x12 } ; if ( memcmp ( rolandsysexid , sysex_store , 4 ) == 0 ) { uint8_t sysex_cs = 0 ; uint32_t sysex_ofs = 4 ; do { sysex_cs += sysex_store [ sysex_ofs ] ; if ( sysex_cs > 0x7F ) { sysex_cs -= 0x80 ; } sysex_ofs ++ ; } while ( sysex_store [ sysex_ofs + 1 ] != 0xf7 ) ; sysex_cs = 128 - sysex_cs ; if ( sysex_cs == sysex_store [ sysex_ofs ] ) { if ( sysex_store [ 4 ] == 0x40 ) { if ( ( ( sysex_store [ 5 ] & 0xf0 ) == 0x10 ) && ( sysex_store [ 6 ] == 0x15 ) ) { uint8_t sysex_ch = 0x0f & sysex_store [ 5 ] ; if ( sysex_ch == 0x00 ) { sysex_ch = 0x09 ; } else if ( sysex_ch <= 0x09 ) { sysex_ch -= 1 ; } midi_setup_sysex_roland_drum_track ( mdi , sysex_ch , sysex_store [ 7 ] ) ; } else if ( ( sysex_store [ 5 ] == 0x00 ) && ( sysex_store [ 6 ] == 0x7F ) && ( sysex_store [ 7 ] == 0x00 ) ) { midi_setup_sysex_roland_reset ( mdi ) ; } } } } else { uint8_t gm_reset [ ] = { 0x7e , 0x7f , 0x09 , 0x01 , 0xf7 } ; uint8_t yamaha_reset [ ] = { 0x43 , 0x10 , 0x4c , 0x00 , 0x00 , 0x7e , 0x00 , 0xf7 } ; if ( memcmp ( gm_reset , sysex_store , 5 ) == 0 ) { midi_setup_sysex_gm_reset ( mdi ) ; } else if ( memcmp ( yamaha_reset , sysex_store , 8 ) == 0 ) { midi_setup_sysex_yamaha_reset ( mdi ) ; } } } free ( sysex_store ) ; sysex_store = NULL ; ret_cnt += sysex_len ; } else { _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(unrecognized<S2SV_blank>meta<S2SV_blank>type<S2SV_blank>event)\" , 0 ) ; return 0 ; } break ; default : ret_cnt = 0 ; break ; } if ( ret_cnt == 0 ) _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(missing<S2SV_blank>event)\" , 0 ) ; return ret_cnt ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * event_data , uint32_t siz , <S2SV_ModStart> ; if ( ! siz ) goto shortbuf ; if ( <S2SV_ModStart> ; ret_cnt ++ ; if ( -- siz == 0 ) goto shortbuf <S2SV_ModStart> : _SETUP_NOTEOFF : if ( siz < 2 ) goto shortbuf ; <S2SV_ModStart> goto _SETUP_NOTEOFF ; if ( siz < 2 ) goto shortbuf ; <S2SV_ModStart> case 0xa0 : if ( siz < 2 ) goto shortbuf ; <S2SV_ModStart> case 0xb0 : if ( siz < 2 ) goto shortbuf ; <S2SV_ModStart> case 0xe0 : if ( siz < 2 ) goto shortbuf ; <S2SV_ModStart> ) ) { if ( siz < 4 ) goto shortbuf ; <S2SV_ModStart> ; if ( -- siz && <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> ret_cnt ++ ; if ( -- siz < tmp_length ) goto shortbuf ; if ( ! tmp_length ) break ; <S2SV_ModStart> ; if ( -- siz && <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> ; ret_cnt ++ ; if ( -- siz < tmp_length ) goto shortbuf ; if ( ! tmp_length ) break <S2SV_ModStart> ; if ( -- siz && <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> ret_cnt ++ ; if ( -- siz < tmp_length ) goto shortbuf ; if ( ! tmp_length ) break ; <S2SV_ModStart> ; if ( -- siz && <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> ret_cnt ++ ; if ( -- siz < tmp_length ) goto shortbuf ; if ( ! tmp_length ) break ; <S2SV_ModStart> ; if ( -- siz && <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> ret_cnt ++ ; if ( -- siz < tmp_length ) goto shortbuf ; if ( ! tmp_length ) break ; <S2SV_ModStart> ; if ( -- siz && <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> ret_cnt ++ ; if ( -- siz < tmp_length ) goto shortbuf ; if ( ! tmp_length ) break ; <S2SV_ModStart> ; if ( -- siz && <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> ret_cnt ++ ; if ( -- siz < tmp_length ) goto shortbuf ; if ( ! tmp_length ) break ; <S2SV_ModStart> ) ) { if ( siz < 3 ) goto shortbuf ; <S2SV_ModStart> ) ) { if ( siz < 3 ) goto shortbuf ; <S2SV_ModStart> ) ) { if ( siz < 2 ) goto shortbuf ; <S2SV_ModStart> ) ) { if ( siz < 5 ) goto shortbuf ; <S2SV_ModStart> ) ) { if ( siz < 7 ) goto shortbuf ; <S2SV_ModStart> ) ) { if ( siz < 6 ) goto shortbuf ; <S2SV_ModStart> ) ) { if ( siz < 4 ) goto shortbuf ; <S2SV_ModStart> ; if ( -- siz && <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> += tmp_length ; if ( -- siz < tmp_length ) goto shortbuf ; <S2SV_ModStart> { do { if ( ! siz ) break ; <S2SV_ModStart> event_data ++ ; siz -- ; <S2SV_ModStart> ) ; } if ( ! siz ) goto shortbuf ; <S2SV_ModStart> event_data ++ ; ret_cnt ++ ; if ( -- siz < sysex_len ) goto shortbuf ; <S2SV_ModStart> sysex_len ) break <S2SV_ModEnd> ; sysex_store = <S2SV_ModStart> return ret_cnt ; shortbuf : _WM_GLOBAL_ERROR ( __FUNCTION__ , __LINE__ , WM_ERR_CORUPT , \"(input<S2SV_blank>too<S2SV_blank>short)\" , 0 ) ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-15951\n\n```\nCWE-20 static void dns_resolver_describe ( const struct key * key , struct seq_file * m ) { seq_puts ( m , key -> description ) ; <S2SV_StartBug> if ( key_is_instantiated ( key ) ) { <S2SV_EndBug> int err = PTR_ERR ( key -> payload . data [ dns_key_error ] ) ; if ( err ) seq_printf ( m , \":<S2SV_blank>%d\" , err ) ; else seq_printf ( m , \":<S2SV_blank>%u\" , key -> datalen ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( key_is_positive <S2SV_ModEnd> ( key )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4127\n\n```\nCWE-264 static int flakey_ioctl ( struct dm_target * ti , unsigned int cmd , unsigned long arg ) { struct flakey_c * fc = ti -> private ; <S2SV_StartBug> return __blkdev_driver_ioctl ( fc -> dev -> bdev , fc -> dev -> mode , cmd , arg ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> -> private ; struct dm_dev * dev = fc -> dev ; int r = 0 ; if <S2SV_ModEnd> ( fc -> <S2SV_ModStart> ( fc -> start || ti -> len != i_size_read ( dev -> bdev -> bd_inode ) >> SECTOR_SHIFT ) r = scsi_verify_blk_ioctl ( NULL , cmd ) ; return r ? : __blkdev_driver_ioctl ( <S2SV_ModStart> -> bdev , <S2SV_ModEnd> dev -> mode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 int main ( int argc , char * * argv ) { char * filein , * str , * tempfile , * prestring , * outprotos , * protostr ; const char * spacestr = \"<S2SV_blank>\" ; <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> l_uint8 * allheaders ; l_int32 i , maxindex , in_line , nflags , protos_added , firstfile , len , ret ; size_t nbytes ; L_BYTEA * ba , * ba2 ; SARRAY * sa , * safirst ; static char mainName [ ] = \"xtractprotos\" ; if ( argc == 1 ) { fprintf ( stderr , \"xtractprotos<S2SV_blank>[-prestring=<string>]<S2SV_blank>[-protos=<where>]<S2SV_blank>\" \"[list<S2SV_blank>of<S2SV_blank>C<S2SV_blank>files]\\\\n\" \"where<S2SV_blank>the<S2SV_blank>prestring<S2SV_blank>is<S2SV_blank>prepended<S2SV_blank>to<S2SV_blank>each<S2SV_blank>prototype,<S2SV_blank>and<S2SV_blank>\\\\n\" \"protos<S2SV_blank>can<S2SV_blank>be<S2SV_blank>either<S2SV_blank>\\'inline\\'<S2SV_blank>or<S2SV_blank>the<S2SV_blank>name<S2SV_blank>of<S2SV_blank>an<S2SV_blank>output<S2SV_blank>\" \"prototype<S2SV_blank>file\\\\n\" ) ; return 1 ; } prestring = outprotos = NULL ; in_line = FALSE ; nflags = 0 ; maxindex = L_MIN ( 3 , argc ) ; for ( i = 1 ; i < maxindex ; i ++ ) { if ( argv [ i ] [ 0 ] == '-' ) { if ( ! strncmp ( argv [ i ] , \"-prestring\" , 10 ) ) { nflags ++ ; <S2SV_StartBug> ret = sscanf ( argv [ i ] + 1 , \"prestring=%s\" , buf ) ; <S2SV_EndBug> if ( ret != 1 ) { fprintf ( stderr , \"parse<S2SV_blank>failure<S2SV_blank>for<S2SV_blank>prestring\\\\n\" ) ; return 1 ; } <S2SV_StartBug> if ( ( len = strlen ( buf ) ) > L_BUF_SIZE - 3 ) { <S2SV_EndBug> L_WARNING ( \"prestring<S2SV_blank>too<S2SV_blank>large;<S2SV_blank>omitting!\\\\n\" , mainName ) ; } else { buf [ len ] = '<S2SV_blank>' ; buf [ len + 1 ] = '\\\\0' ; prestring = stringNew ( buf ) ; } } else if ( ! strncmp ( argv [ i ] , \"-protos\" , 7 ) ) { nflags ++ ; <S2SV_StartBug> ret = sscanf ( argv [ i ] + 1 , \"protos=%s\" , buf ) ; <S2SV_EndBug> if ( ret != 1 ) { fprintf ( stderr , \"parse<S2SV_blank>failure<S2SV_blank>for<S2SV_blank>protos\\\\n\" ) ; return 1 ; } outprotos = stringNew ( buf ) ; if ( ! strncmp ( outprotos , \"inline\" , 7 ) ) in_line = TRUE ; } } } if ( argc - nflags < 2 ) { fprintf ( stderr , \"no<S2SV_blank>files<S2SV_blank>specified!\\\\n\" ) ; return 1 ; } ba = l_byteaCreate ( 500 ) ; sa = sarrayCreate ( 0 ) ; sarrayAddString ( sa , ( char * ) \"/*\" , L_COPY ) ; <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , <S2SV_EndBug> \"<S2SV_blank>*<S2SV_blank><S2SV_blank>These<S2SV_blank>prototypes<S2SV_blank>were<S2SV_blank>autogen\\'d<S2SV_blank>by<S2SV_blank>xtractprotos,<S2SV_blank>v.<S2SV_blank>%s\" , version ) ; sarrayAddString ( sa , buf , L_COPY ) ; sarrayAddString ( sa , ( char * ) \"<S2SV_blank>*/\" , L_COPY ) ; sarrayAddString ( sa , ( char * ) \"#ifdef<S2SV_blank>__cplusplus\" , L_COPY ) ; sarrayAddString ( sa , ( char * ) \"extern<S2SV_blank>\\\\\"C\\\\\"<S2SV_blank>{\" , L_COPY ) ; sarrayAddString ( sa , ( char * ) \"#endif<S2SV_blank><S2SV_blank>/*<S2SV_blank>__cplusplus<S2SV_blank>*/\\\\n\" , L_COPY ) ; str = sarrayToString ( sa , 1 ) ; l_byteaAppendString ( ba , str ) ; lept_free ( str ) ; sarrayDestroy ( & sa ) ; firstfile = 1 + nflags ; protos_added = FALSE ; if ( ( tempfile = l_makeTempFilename ( ) ) == NULL ) { fprintf ( stderr , \"failure<S2SV_blank>to<S2SV_blank>make<S2SV_blank>a<S2SV_blank>writeable<S2SV_blank>temp<S2SV_blank>file\\\\n\" ) ; return 1 ; } for ( i = firstfile ; i < argc ; i ++ ) { filein = argv [ i ] ; len = strlen ( filein ) ; if ( filein [ len - 1 ] == 'h' ) continue ; <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"cpp<S2SV_blank>-ansi<S2SV_blank>-DNO_PROTOS<S2SV_blank>%s<S2SV_blank>%s\" , <S2SV_EndBug> filein , tempfile ) ; ret = system ( buf ) ; if ( ret ) { fprintf ( stderr , \"cpp<S2SV_blank>failure<S2SV_blank>for<S2SV_blank>%s;<S2SV_blank>continuing\\\\n\" , filein ) ; continue ; } if ( ( str = parseForProtos ( tempfile , prestring ) ) == NULL ) { fprintf ( stderr , \"parse<S2SV_blank>failure<S2SV_blank>for<S2SV_blank>%s;<S2SV_blank>continuing\\\\n\" , filein ) ; continue ; } if ( strlen ( str ) > 1 ) { l_byteaAppendString ( ba , str ) ; protos_added = TRUE ; } lept_free ( str ) ; } lept_rmfile ( tempfile ) ; lept_free ( tempfile ) ; sa = sarrayCreate ( 0 ) ; sarrayAddString ( sa , ( char * ) \"\\\\n#ifdef<S2SV_blank>__cplusplus\" , L_COPY ) ; sarrayAddString ( sa , ( char * ) \"}\" , L_COPY ) ; sarrayAddString ( sa , ( char * ) \"#endif<S2SV_blank><S2SV_blank>/*<S2SV_blank>__cplusplus<S2SV_blank>*/\" , L_COPY ) ; str = sarrayToString ( sa , 1 ) ; l_byteaAppendString ( ba , str ) ; lept_free ( str ) ; sarrayDestroy ( & sa ) ; protostr = ( char * ) l_byteaCopyData ( ba , & nbytes ) ; l_byteaDestroy ( & ba ) ; if ( ! outprotos ) { fprintf ( stderr , \"%s\\\\n\" , protostr ) ; lept_free ( protostr ) ; return 0 ; } if ( ! protos_added ) { fprintf ( stderr , \"No<S2SV_blank>protos<S2SV_blank>found\\\\n\" ) ; lept_free ( protostr ) ; return 1 ; } ba = l_byteaInitFromFile ( \"allheaders_top.txt\" ) ; if ( ! in_line ) { snprintf ( buf , sizeof ( buf ) , \"#include<S2SV_blank>\\\\\"%s\\\\\"\\\\n\" , outprotos ) ; l_byteaAppendString ( ba , buf ) ; l_binaryWrite ( outprotos , \"w\" , protostr , nbytes ) ; } else { l_byteaAppendString ( ba , protostr ) ; } ba2 = l_byteaInitFromFile ( \"allheaders_bot.txt\" ) ; l_byteaJoin ( ba , & ba2 ) ; l_byteaWrite ( \"allheaders.h\" , ba , 0 , 0 ) ; l_byteaDestroy ( & ba ) ; lept_free ( protostr ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; l_uint8 <S2SV_ModStart> + 1 , \"prestring=%490s\" <S2SV_ModEnd> , buf ) <S2SV_ModStart> ) ) > L_BUFSIZE <S2SV_ModEnd> - 3 ) <S2SV_ModStart> + 1 , \"protos=%490s\" <S2SV_ModEnd> , buf ) <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"<S2SV_blank>*<S2SV_blank><S2SV_blank>These<S2SV_blank>prototypes<S2SV_blank>were<S2SV_blank>autogen\\'d<S2SV_blank>by<S2SV_blank>xtractprotos,<S2SV_blank>v.<S2SV_blank>%s\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"cpp<S2SV_blank>-ansi<S2SV_blank>-DNO_PROTOS<S2SV_blank>%s<S2SV_blank>%s\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7186\n\n```\nCWE-787 l_int32 gplotAddPlot ( GPLOT * gplot , NUMA * nax , NUMA * nay , l_int32 plotstyle , const char * plottitle ) { <S2SV_StartBug> char buf [ L_BUF_SIZE ] ; <S2SV_EndBug> char emptystring [ ] = \"\" ; char * datastr , * title ; l_int32 n , i ; l_float32 valx , valy , startx , delx ; SARRAY * sa ; PROCNAME ( \"gplotAddPlot\" ) ; if ( ! gplot ) return ERROR_INT ( \"gplot<S2SV_blank>not<S2SV_blank>defined\" , procName , 1 ) ; if ( ! nay ) return ERROR_INT ( \"nay<S2SV_blank>not<S2SV_blank>defined\" , procName , 1 ) ; if ( plotstyle < 0 || plotstyle >= NUM_GPLOT_STYLES ) return ERROR_INT ( \"invalid<S2SV_blank>plotstyle\" , procName , 1 ) ; if ( ( n = numaGetCount ( nay ) ) == 0 ) return ERROR_INT ( \"no<S2SV_blank>points<S2SV_blank>to<S2SV_blank>plot\" , procName , 1 ) ; if ( nax && ( n != numaGetCount ( nax ) ) ) return ERROR_INT ( \"nax<S2SV_blank>and<S2SV_blank>nay<S2SV_blank>sizes<S2SV_blank>differ\" , procName , 1 ) ; if ( n == 1 && plotstyle == GPLOT_LINES ) { L_INFO ( \"only<S2SV_blank>1<S2SV_blank>pt;<S2SV_blank>changing<S2SV_blank>style<S2SV_blank>to<S2SV_blank>points\\\\n\" , procName ) ; plotstyle = GPLOT_POINTS ; } numaGetParameters ( nay , & startx , & delx ) ; numaAddNumber ( gplot -> plotstyles , plotstyle ) ; if ( plottitle ) { title = stringNew ( plottitle ) ; sarrayAddString ( gplot -> plottitles , title , L_INSERT ) ; } else { sarrayAddString ( gplot -> plottitles , emptystring , L_COPY ) ; } gplot -> nplots ++ ; <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%s.data.%d\" , gplot -> rootname , gplot -> nplots ) ; <S2SV_EndBug> sarrayAddString ( gplot -> datanames , buf , L_COPY ) ; sa = sarrayCreate ( n ) ; for ( i = 0 ; i < n ; i ++ ) { if ( nax ) numaGetFValue ( nax , i , & valx ) ; else valx = startx + i * delx ; numaGetFValue ( nay , i , & valy ) ; <S2SV_StartBug> snprintf ( buf , L_BUF_SIZE , \"%f<S2SV_blank>%f\\\\n\" , valx , valy ) ; <S2SV_EndBug> sarrayAddString ( sa , buf , L_COPY ) ; } datastr = sarrayToString ( sa , 0 ) ; sarrayAddString ( gplot -> plotdata , datastr , L_INSERT ) ; sarrayDestroy ( & sa ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> char buf [ L_BUFSIZE <S2SV_ModEnd> ] ; char <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%s.data.%d\" , <S2SV_ModStart> ( buf , L_BUFSIZE <S2SV_ModEnd> , \"%f<S2SV_blank>%f\\\\n\" ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4581\n\n```\nCWE-000 static int propagate_one ( struct mount * m ) { struct mount * child ; int type ; if ( IS_MNT_NEW ( m ) ) return 0 ; if ( ! is_subdir ( mp -> m_dentry , m -> mnt . mnt_root ) ) return 0 ; if ( peers ( m , last_dest ) ) { type = CL_MAKE_SHARED ; } else { <S2SV_StartBug> struct mount * n , * p ; <S2SV_EndBug> for ( n = m ; ; n = p ) { p = n -> mnt_master ; <S2SV_StartBug> if ( p == dest_master || IS_MNT_MARKED ( p ) ) { <S2SV_EndBug> while ( last_dest -> mnt_master != p ) { last_source = last_source -> mnt_master ; last_dest = last_source -> mnt_parent ; } if ( ! peers ( n , last_dest ) ) { last_source = last_source -> mnt_master ; last_dest = last_source -> mnt_parent ; } break ; } } type = CL_SLAVE ; if ( IS_MNT_SHARED ( m ) ) type |= CL_MAKE_SHARED ; } if ( m -> mnt_ns -> user_ns != user_ns ) type |= CL_UNPRIVILEGED ; child = copy_tree ( last_source , last_source -> mnt . mnt_root , type ) ; if ( IS_ERR ( child ) ) return PTR_ERR ( child ) ; child -> mnt . mnt_flags &= ~ MNT_LOCKED ; mnt_set_mountpoint ( m , mp , child ) ; last_dest = m ; last_source = child ; if ( m -> mnt_master != dest_master ) { read_seqlock_excl ( & mount_lock ) ; SET_MNT_MARK ( m -> mnt_master ) ; read_sequnlock_excl ( & mount_lock ) ; } hlist_add_head ( & child -> mnt_hash , list ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , * p ; bool done <S2SV_ModStart> p ) ) break ; } do { struct mount * parent = last_source -> mnt_parent ; if ( last_source == first_source ) break ; done = parent -> mnt_master == p ; if ( done && peers ( n , parent ) ) break ; last_source = last_source -> mnt_master ; } while ( ! done ) ; <S2SV_ModEnd> type = CL_SLAVE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35518\n\n```\nCWE-200 int dse_bind ( Slapi_PBlock * pb ) { ber_tag_t method ; struct berval * cred ; Slapi_Value * * bvals ; struct dse * pdse ; Slapi_Attr * attr ; Slapi_DN * sdn = NULL ; Slapi_Entry * ec = NULL ; if ( slapi_pblock_get ( pb , SLAPI_PLUGIN_PRIVATE , & pdse ) < 0 || slapi_pblock_get ( pb , SLAPI_BIND_TARGET_SDN , & sdn ) < 0 || slapi_pblock_get ( pb , SLAPI_BIND_METHOD , & method ) < 0 || slapi_pblock_get ( pb , SLAPI_BIND_CREDENTIALS , & cred ) < 0 ) { slapi_send_ldap_result ( pb , LDAP_OPERATIONS_ERROR , NULL , NULL , 0 , NULL ) ; return SLAPI_BIND_FAIL ; } if ( method == LDAP_AUTH_SIMPLE && cred -> bv_len == 0 ) { slapi_send_ldap_result ( pb , LDAP_SUCCESS , NULL , NULL , 0 , NULL ) ; return ( SLAPI_BIND_FAIL ) ; } ec = dse_get_entry_copy ( pdse , sdn , DSE_USE_LOCK ) ; if ( ec == NULL ) { <S2SV_StartBug> slapi_send_ldap_result ( pb , LDAP_NO_SUCH_OBJECT , NULL , NULL , 0 , NULL ) ; <S2SV_EndBug> return ( SLAPI_BIND_FAIL ) ; } switch ( method ) { case LDAP_AUTH_SIMPLE : { Slapi_Value cv ; if ( slapi_entry_attr_find ( ec , \"userpassword\" , & attr ) != 0 ) { <S2SV_StartBug> slapi_send_ldap_result ( pb , LDAP_INAPPROPRIATE_AUTH , NULL , NULL , 0 , NULL ) ; <S2SV_EndBug> slapi_entry_free ( ec ) ; return SLAPI_BIND_FAIL ; } bvals = attr_get_present_values ( attr ) ; slapi_value_init_berval ( & cv , cred ) ; if ( slapi_pw_find_sv ( bvals , & cv ) != 0 ) { <S2SV_StartBug> slapi_send_ldap_result ( pb , LDAP_INVALID_CREDENTIALS , NULL , NULL , 0 , NULL ) ; <S2SV_EndBug> slapi_entry_free ( ec ) ; value_done ( & cv ) ; return SLAPI_BIND_FAIL ; } value_done ( & cv ) ; } break ; default : slapi_send_ldap_result ( pb , LDAP_STRONG_AUTH_NOT_SUPPORTED , NULL , \"auth<S2SV_blank>method<S2SV_blank>not<S2SV_blank>supported\" , 0 , NULL ) ; slapi_entry_free ( ec ) ; return SLAPI_BIND_FAIL ; } slapi_entry_free ( ec ) ; return SLAPI_BIND_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) { slapi_pblock_set ( pb , SLAPI_PB_RESULT_TEXT , \"Entry<S2SV_blank>does<S2SV_blank>not<S2SV_blank>exist\" ) ; slapi_send_ldap_result ( pb , LDAP_INVALID_CREDENTIALS <S2SV_ModEnd> , NULL , <S2SV_ModStart> 0 ) { slapi_pblock_set ( pb , SLAPI_PB_RESULT_TEXT , \"Entry<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>userpassword<S2SV_blank>set\" ) ; slapi_send_ldap_result ( pb , LDAP_INVALID_CREDENTIALS <S2SV_ModEnd> , NULL , <S2SV_ModStart> 0 ) { slapi_pblock_set ( pb , SLAPI_PB_RESULT_TEXT , \"Invalid<S2SV_blank>credentials\" ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-1428\n\n```\nCWE-119 void receive_tcppacket ( connection_t * c , const char * buffer , int len ) { <S2SV_StartBug> vpn_packet_t outpkt ; <S2SV_EndBug> outpkt . len = len ; if ( c -> options & OPTION_TCPONLY ) outpkt . priority = 0 ; else outpkt . priority = - 1 ; memcpy ( outpkt . data , buffer , len ) ; receive_packet ( c -> node , & outpkt ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { vpn_packet_t outpkt ; if ( len > sizeof outpkt . data ) return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-7648\n\n```\nCWE-119 int main ( int argc , char * argv [ ] ) { opj_dinfo_t * dinfo ; opj_event_mgr_t event_mgr ; int tnum ; unsigned int snum ; opj_mj2_t * movie ; mj2_tk_t * track ; mj2_sample_t * sample ; unsigned char * frame_codestream ; FILE * file , * outfile ; char outfilename [ 50 ] ; mj2_dparameters_t parameters ; if ( argc != 3 ) { printf ( \"Usage:<S2SV_blank>%s<S2SV_blank>mj2filename<S2SV_blank>output_location\\\\n\" , argv [ 0 ] ) ; printf ( \"Example:<S2SV_blank>%s<S2SV_blank>foreman.mj2<S2SV_blank>output/foreman\\\\n\" , argv [ 0 ] ) ; return 1 ; } file = fopen ( argv [ 1 ] , \"rb\" ) ; if ( ! file ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>reading\\\\n\" , argv [ 1 ] ) ; return 1 ; } memset ( & event_mgr , 0 , sizeof ( opj_event_mgr_t ) ) ; event_mgr . error_handler = error_callback ; event_mgr . warning_handler = warning_callback ; event_mgr . info_handler = info_callback ; dinfo = mj2_create_decompress ( ) ; opj_set_event_mgr ( ( opj_common_ptr ) dinfo , & event_mgr , stderr ) ; memset ( & parameters , 0 , sizeof ( mj2_dparameters_t ) ) ; movie = ( opj_mj2_t * ) dinfo -> mj2_handle ; mj2_setup_decoder ( movie , & parameters ) ; if ( mj2_read_struct ( file , movie ) ) { return 1 ; } tnum = 0 ; while ( movie -> tk [ tnum ] . track_type != 0 ) { tnum ++ ; } track = & movie -> tk [ tnum ] ; fprintf ( stdout , \"Extracting<S2SV_blank>%d<S2SV_blank>frames<S2SV_blank>from<S2SV_blank>file...\\\\n\" , track -> num_samples ) ; for ( snum = 0 ; snum < track -> num_samples ; snum ++ ) { sample = & track -> sample [ snum ] ; frame_codestream = ( unsigned char * ) malloc ( sample -> sample_size - 8 ) ; fseek ( file , sample -> offset + 8 , SEEK_SET ) ; fread ( frame_codestream , sample -> sample_size - 8 , 1 , file ) ; <S2SV_StartBug> sprintf ( outfilename , \"%s_%05d.j2k\" , argv [ 2 ] , snum ) ; <S2SV_EndBug> outfile = fopen ( outfilename , \"wb\" ) ; if ( ! outfile ) { fprintf ( stderr , \"failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>writing\\\\n\" , outfilename ) ; return 1 ; } fwrite ( frame_codestream , sample -> sample_size - 8 , 1 , outfile ) ; fclose ( outfile ) ; free ( frame_codestream ) ; } fclose ( file ) ; fprintf ( stdout , \"%d<S2SV_blank>frames<S2SV_blank>correctly<S2SV_blank>extracted\\\\n\" , snum ) ; if ( dinfo ) { mj2_destroy_decompress ( ( opj_mj2_t * ) dinfo -> mj2_handle ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> file ) ; int num = snprintf <S2SV_ModEnd> ( outfilename , <S2SV_ModStart> ( outfilename , sizeof ( outfilename ) , <S2SV_ModStart> snum ) ; if ( num >= sizeof ( outfilename ) ) { fprintf ( stderr , \"maximum<S2SV_blank>length<S2SV_blank>of<S2SV_blank>output<S2SV_blank>prefix<S2SV_blank>exceeded\\\\n\" ) ; return 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-4581\n\n```\nCWE-000 int propagate_mnt ( struct mount * dest_mnt , struct mountpoint * dest_mp , struct mount * source_mnt , struct hlist_head * tree_list ) { struct mount * m , * n ; int ret = 0 ; user_ns = current -> nsproxy -> mnt_ns -> user_ns ; last_dest = dest_mnt ; <S2SV_StartBug> last_source = source_mnt ; <S2SV_EndBug> mp = dest_mp ; list = tree_list ; dest_master = dest_mnt -> mnt_master ; for ( n = next_peer ( dest_mnt ) ; n != dest_mnt ; n = next_peer ( n ) ) { ret = propagate_one ( n ) ; if ( ret ) goto out ; } for ( m = next_group ( dest_mnt , dest_mnt ) ; m ; m = next_group ( m , dest_mnt ) ) { n = m ; do { ret = propagate_one ( n ) ; if ( ret ) goto out ; n = next_peer ( n ) ; } while ( n != m ) ; } out : read_seqlock_excl ( & mount_lock ) ; hlist_for_each_entry ( n , tree_list , mnt_hash ) { m = n -> mnt_parent ; if ( m -> mnt_master != dest_mnt -> mnt_master ) CLEAR_MNT_MARK ( m -> mnt_master ) ; } read_sequnlock_excl ( & mount_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = dest_mnt ; first_source = source_mnt ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1237\n\n```\nCWE-284 __be32 nfsd4_set_nfs4_acl ( struct svc_rqst * rqstp , struct svc_fh * fhp , struct nfs4_acl * acl ) { __be32 error ; int host_error ; struct dentry * dentry ; struct inode * inode ; struct posix_acl * pacl = NULL , * dpacl = NULL ; unsigned int flags = 0 ; error = fh_verify ( rqstp , fhp , 0 , NFSD_MAY_SATTR ) ; if ( error ) return error ; dentry = fhp -> fh_dentry ; inode = d_inode ( dentry ) ; <S2SV_StartBug> if ( ! inode -> i_op -> set_acl || ! IS_POSIXACL ( inode ) ) <S2SV_EndBug> return nfserr_attrnotsupp ; if ( S_ISDIR ( inode -> i_mode ) ) flags = NFS4_ACL_DIR ; host_error = nfs4_acl_nfsv4_to_posix ( acl , & pacl , & dpacl , flags ) ; if ( host_error == - EINVAL ) return nfserr_attrnotsupp ; if ( host_error < 0 ) goto out_nfserr ; <S2SV_StartBug> host_error = inode -> i_op -> set_acl ( inode , pacl , ACL_TYPE_ACCESS ) ; <S2SV_EndBug> if ( host_error < 0 ) <S2SV_StartBug> goto out_release ; <S2SV_EndBug> if ( S_ISDIR ( inode -> i_mode ) ) { <S2SV_StartBug> host_error = inode -> i_op -> set_acl ( inode , dpacl , <S2SV_EndBug> ACL_TYPE_DEFAULT ) ; } <S2SV_StartBug> out_release : <S2SV_EndBug> posix_acl_release ( pacl ) ; posix_acl_release ( dpacl ) ; out_nfserr : if ( host_error == - EOPNOTSUPP ) return nfserr_attrnotsupp ; else return nfserrno ( host_error ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> S_ISDIR ( inode <S2SV_ModStart> goto out_nfserr ; fh_lock ( fhp ) ; host_error = set_posix_acl ( inode , ACL_TYPE_ACCESS , pacl <S2SV_ModEnd> ) ; if <S2SV_ModStart> 0 ) goto out_drop_lock <S2SV_ModEnd> ; if ( <S2SV_ModStart> { host_error = set_posix_acl ( inode , ACL_TYPE_DEFAULT , dpacl <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } out_drop_lock : fh_unlock ( fhp ) ; <S2SV_ModEnd> posix_acl_release ( pacl\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static void pci_bus_write_dsdt ( int bus ) { struct businfo * bi ; struct slotinfo * si ; struct pci_vdev * dev ; int count , func , slot ; bi = pci_businfo [ bus ] ; if ( bi == NULL ) { if ( bus != 0 ) return ; } dsdt_line ( \"<S2SV_blank><S2SV_blank>Device<S2SV_blank>(PCI%01X)\" , bus ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank>{\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Name<S2SV_blank>(_HID,<S2SV_blank>EisaId<S2SV_blank>(\\\\\"PNP0A03\\\\\"))\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Name<S2SV_blank>(_ADR,<S2SV_blank>Zero)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Method<S2SV_blank>(_BBN,<S2SV_blank>0,<S2SV_blank>NotSerialized)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>{\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Return<S2SV_blank>(0x%08X)\" , bus ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Name<S2SV_blank>(_CRS,<S2SV_blank>ResourceTemplate<S2SV_blank>()\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>{\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>WordBusNumber<S2SV_blank>(ResourceProducer,<S2SV_blank>MinFixed,<S2SV_blank>\" \"MaxFixed,<S2SV_blank>PosDecode,\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Granularity\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Minimum\" , bus ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Maximum\" , bus ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Translation<S2SV_blank>Offset\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0001,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Length\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>,,<S2SV_blank>)\" ) ; if ( bus == 0 ) { dsdt_indent ( 3 ) ; dsdt_fixed_ioport ( 0xCF8 , 8 ) ; dsdt_unindent ( 3 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>WordIO<S2SV_blank>(ResourceProducer,<S2SV_blank>MinFixed,<S2SV_blank>MaxFixed,<S2SV_blank>\" \"PosDecode,<S2SV_blank>EntireRange,\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Granularity\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Minimum\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0CF7,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Maximum\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Translation<S2SV_blank>Offset\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0CF8,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Length\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>,,<S2SV_blank>,<S2SV_blank>TypeStatic)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>WordIO<S2SV_blank>(ResourceProducer,<S2SV_blank>MinFixed,<S2SV_blank>MaxFixed,<S2SV_blank>\" \"PosDecode,<S2SV_blank>EntireRange,\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Granularity\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0D00,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Minimum\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Maximum\" , PCI_EMUL_IOBASE - 1 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Translation<S2SV_blank>Offset\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Length\" , PCI_EMUL_IOBASE - 0x0D00 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>,,<S2SV_blank>,<S2SV_blank>TypeStatic)\" ) ; if ( bi == NULL ) { dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>})\" ) ; goto done ; } } <S2SV_StartBug> assert ( bi != NULL ) ; <S2SV_EndBug> dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>WordIO<S2SV_blank>(ResourceProducer,<S2SV_blank>MinFixed,<S2SV_blank>MaxFixed,<S2SV_blank>\" \"PosDecode,<S2SV_blank>EntireRange,\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Granularity\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Minimum\" , bi -> iobase ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Maximum\" , bi -> iolimit - 1 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Translation<S2SV_blank>Offset\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%04X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Length\" , bi -> iolimit - bi -> iobase ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>,,<S2SV_blank>,<S2SV_blank>TypeStatic)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>DWordMemory<S2SV_blank>(ResourceProducer,<S2SV_blank>PosDecode,<S2SV_blank>\" \"MinFixed,<S2SV_blank>MaxFixed,<S2SV_blank>NonCacheable,<S2SV_blank>ReadWrite,\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x00000000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Granularity\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%08X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Minimum\\\\n\" , bi -> membase32 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%08X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Maximum\\\\n\" , bi -> memlimit32 - 1 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x00000000,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Translation<S2SV_blank>Offset\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%08X,<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>//<S2SV_blank>Length\\\\n\" , bi -> memlimit32 - bi -> membase32 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>,,<S2SV_blank>,<S2SV_blank>AddressRangeMemory,<S2SV_blank>TypeStatic)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>QWordMemory<S2SV_blank>(ResourceProducer,<S2SV_blank>PosDecode,<S2SV_blank>\" \"MinFixed,<S2SV_blank>MaxFixed,<S2SV_blank>NonCacheable,<S2SV_blank>ReadWrite,\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000000000000000,<S2SV_blank>//<S2SV_blank>Granularity\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%016lX,<S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Minimum\\\\n\" , bi -> membase64 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%016lX,<S2SV_blank>//<S2SV_blank>Range<S2SV_blank>Maximum\\\\n\" , bi -> memlimit64 - 1 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x0000000000000000,<S2SV_blank>//<S2SV_blank>Translation<S2SV_blank>Offset\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>0x%016lX,<S2SV_blank>//<S2SV_blank>Length\\\\n\" , bi -> memlimit64 - bi -> membase64 ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>,,<S2SV_blank>,<S2SV_blank>AddressRangeMemory,<S2SV_blank>TypeStatic)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>})\" ) ; if ( ! is_rtvm ) { count = pci_count_lintr ( bus ) ; if ( count != 0 ) { dsdt_indent ( 2 ) ; dsdt_line ( \"Name<S2SV_blank>(PPRT,<S2SV_blank>Package<S2SV_blank>()\" ) ; dsdt_line ( \"{\" ) ; pci_walk_lintr ( bus , pci_pirq_prt_entry , NULL ) ; dsdt_line ( \"})\" ) ; dsdt_line ( \"Name<S2SV_blank>(APRT,<S2SV_blank>Package<S2SV_blank>()\" ) ; dsdt_line ( \"{\" ) ; pci_walk_lintr ( bus , pci_apic_prt_entry , NULL ) ; dsdt_line ( \"})\" ) ; dsdt_line ( \"Method<S2SV_blank>(_PRT,<S2SV_blank>0,<S2SV_blank>NotSerialized)\" ) ; dsdt_line ( \"{\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank>If<S2SV_blank>(PICM)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank>{\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Return<S2SV_blank>(APRT)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank>}\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank>Else\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank>{\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>Return<S2SV_blank>(PPRT)\" ) ; dsdt_line ( \"<S2SV_blank><S2SV_blank>}\" ) ; dsdt_line ( \"}\" ) ; dsdt_unindent ( 2 ) ; } } dsdt_indent ( 2 ) ; for ( slot = 0 ; slot < MAXSLOTS ; slot ++ ) { si = & bi -> slotinfo [ slot ] ; for ( func = 0 ; func < MAXFUNCS ; func ++ ) { dev = si -> si_funcs [ func ] . fi_devi ; if ( dev != NULL && dev -> dev_ops -> vdev_write_dsdt != NULL ) dev -> dev_ops -> vdev_write_dsdt ( dev ) ; } } dsdt_unindent ( 2 ) ; done : dsdt_line ( \"<S2SV_blank><S2SV_blank>}\" ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; } } <S2SV_ModEnd> dsdt_line ( \"<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>WordIO<S2SV_blank>(ResourceProducer,<S2SV_blank>MinFixed,<S2SV_blank>MaxFixed,<S2SV_blank>\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-189(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2596\n\n```\nCWE-189 static int fb_mmap ( struct file * file , struct vm_area_struct * vma ) { struct fb_info * info = file_fb_info ( file ) ; struct fb_ops * fb ; <S2SV_StartBug> unsigned long off ; <S2SV_EndBug> unsigned long start ; u32 len ; if ( ! info ) return - ENODEV ; <S2SV_StartBug> if ( vma -> vm_pgoff > ( ~ 0UL >> PAGE_SHIFT ) ) <S2SV_EndBug> return - EINVAL ; <S2SV_StartBug> off = vma -> vm_pgoff << PAGE_SHIFT ; <S2SV_EndBug> fb = info -> fbops ; if ( ! fb ) return - ENODEV ; mutex_lock ( & info -> mm_lock ) ; <S2SV_StartBug> if ( fb -> fb_mmap ) { <S2SV_EndBug> int res ; res = fb -> fb_mmap ( info , vma ) ; mutex_unlock ( & info -> mm_lock ) ; return res ; } start = info -> fix . smem_start ; len = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + info -> fix . smem_len ) ; if ( off >= len ) { off -= len ; if ( info -> var . accel_flags ) { mutex_unlock ( & info -> mm_lock ) ; return - EINVAL ; } start = info -> fix . mmio_start ; len = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + info -> fix . mmio_len ) ; } mutex_unlock ( & info -> mm_lock ) ; start &= PAGE_MASK ; if ( ( vma -> vm_end - vma -> vm_start + off ) > len ) return - EINVAL ; off += start ; vma -> vm_pgoff = off >> PAGE_SHIFT ; vma -> vm_page_prot = vm_get_page_prot ( vma -> vm_flags ) ; <S2SV_StartBug> fb_pgprotect ( file , vma , off ) ; <S2SV_EndBug> if ( io_remap_pfn_range ( vma , vma -> vm_start , off >> PAGE_SHIFT , vma -> vm_end - vma -> vm_start , vma -> vm_page_prot ) ) return - EAGAIN ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; unsigned long mmio_pgoff <S2SV_ModEnd> ; unsigned long <S2SV_ModStart> - ENODEV ; fb = info -> fbops ; if ( ! fb ) return - ENODEV ; mutex_lock ( & info -> mm_lock ) ; if ( fb -> fb_mmap ) { int res ; res = fb -> fb_mmap ( info , vma ) ; mutex_unlock ( & info -> mm_lock ) ; return res ; } start = info -> fix . smem_start ; len = info -> fix . smem_len ; mmio_pgoff = PAGE_ALIGN ( ( start & ~ PAGE_MASK ) + len ) >> PAGE_SHIFT ; if ( <S2SV_ModEnd> vma -> vm_pgoff <S2SV_ModStart> vma -> vm_pgoff >= mmio_pgoff ) { vma -> vm_pgoff -= mmio_pgoff ; start = info -> fix . mmio_start ; len = info -> fix . mmio_len ; } mutex_unlock <S2SV_ModEnd> ( & info <S2SV_ModStart> mm_lock ) ; <S2SV_ModEnd> vma -> vm_page_prot <S2SV_ModStart> , vma , start ) ; return vm_iomap_memory ( vma , start , len ) <S2SV_ModEnd> ; } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-14991\n\n```\nCWE-200 static void sg_fill_request_table ( Sg_fd * sfp , sg_req_info_t * rinfo ) { Sg_request * srp ; int val ; unsigned int ms ; val = 0 ; list_for_each_entry ( srp , & sfp -> rq_list , entry ) { if ( val > SG_MAX_QUEUE ) break ; <S2SV_StartBug> memset ( & rinfo [ val ] , 0 , SZ_SG_REQ_INFO ) ; <S2SV_EndBug> rinfo [ val ] . req_state = srp -> done + 1 ; rinfo [ val ] . problem = srp -> header . masked_status & srp -> header . host_status & srp -> header . driver_status ; if ( srp -> done ) rinfo [ val ] . duration = srp -> header . duration ; else { ms = jiffies_to_msecs ( jiffies ) ; rinfo [ val ] . duration = ( ms > srp -> header . duration ) ? ( ms - srp -> header . duration ) : 0 ; } rinfo [ val ] . orphan = srp -> orphan ; rinfo [ val ] . sg_io_owned = srp -> sg_io_owned ; rinfo [ val ] . pack_id = srp -> header . pack_id ; rinfo [ val ] . usr_ptr = srp -> header . usr_ptr ; val ++ ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; <S2SV_ModEnd> rinfo [ val\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 int obj2ast_comprehension ( PyObject * obj , comprehension_ty * out , PyArena * arena ) { PyObject * tmp = NULL ; expr_ty target ; expr_ty iter ; asdl_seq * ifs ; int is_async ; <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_target ) ) { <S2SV_EndBug> int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_target ) ; <S2SV_StartBug> if ( tmp == NULL ) goto failed ; <S2SV_EndBug> res = obj2ast_expr ( tmp , & target , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>comprehension\" ) ; return 1 ; } <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_iter ) ) { <S2SV_EndBug> int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_iter ) ; <S2SV_StartBug> if ( tmp == NULL ) goto failed ; <S2SV_EndBug> res = obj2ast_expr ( tmp , & iter , arena ) ; if ( res != 0 ) goto failed ; Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"iter\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>comprehension\" ) ; return 1 ; } if ( _PyObject_HasAttrId ( obj , & PyId_ifs ) ) { int res ; Py_ssize_t len ; <S2SV_StartBug> Py_ssize_t i ; <S2SV_EndBug> tmp = _PyObject_GetAttrId ( obj , & PyId_ifs ) ; if ( tmp == NULL ) goto failed ; if ( ! PyList_Check ( tmp ) ) { PyErr_Format ( PyExc_TypeError , \"comprehension<S2SV_blank>field<S2SV_blank>\\\\\"ifs\\\\\"<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>list,<S2SV_blank>not<S2SV_blank>a<S2SV_blank>%.200s\" , tmp -> ob_type -> tp_name ) ; goto failed ; } len = PyList_GET_SIZE ( tmp ) ; ifs = _Ta3_asdl_seq_new ( len , arena ) ; if ( ifs == NULL ) goto failed ; for ( i = 0 ; i < len ; i ++ ) { <S2SV_StartBug> expr_ty value ; <S2SV_EndBug> <S2SV_StartBug> res = obj2ast_expr ( PyList_GET_ITEM ( tmp , i ) , & value , arena ) ; <S2SV_EndBug> if ( res != 0 ) goto failed ; if ( len != PyList_GET_SIZE ( tmp ) ) { PyErr_SetString ( PyExc_RuntimeError , \"comprehension<S2SV_blank>field<S2SV_blank>\\\\\"ifs\\\\\"<S2SV_blank>changed<S2SV_blank>size<S2SV_blank>during<S2SV_blank>iteration\" ) ; goto failed ; } <S2SV_StartBug> asdl_seq_SET ( ifs , i , value ) ; <S2SV_EndBug> } Py_CLEAR ( tmp ) ; <S2SV_StartBug> } else { <S2SV_EndBug> PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ifs\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>comprehension\" ) ; return 1 ; } <S2SV_StartBug> if ( _PyObject_HasAttrId ( obj , & PyId_is_async ) ) { <S2SV_EndBug> int res ; tmp = _PyObject_GetAttrId ( obj , & PyId_is_async ) ; <S2SV_StartBug> if ( tmp == NULL ) goto failed ; <S2SV_EndBug> res = obj2ast_int ( tmp , & is_async , arena ) ; if ( res != 0 ) goto failed ; <S2SV_StartBug> Py_CLEAR ( tmp ) ; <S2SV_EndBug> } else { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"is_async\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>comprehension\" ) ; return 1 ; } * out = comprehension ( target , iter , ifs , is_async , arena ) ; return 0 ; failed : Py_XDECREF ( tmp ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_target , & tmp ) < 0 ) { return 1 ; } <S2SV_ModEnd> if ( tmp <S2SV_ModStart> == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"target\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>comprehension\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_iter , & tmp ) < 0 ) { return 1 ; } <S2SV_ModEnd> if ( tmp <S2SV_ModStart> == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"iter\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>comprehension\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> ) ; } if ( lookup_attr_id ( obj , & PyId_ifs , & tmp ) < 0 ) { return 1 ; } if ( tmp == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"ifs\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>comprehension\" ) ; return 1 ; } else <S2SV_ModEnd> { int res <S2SV_ModStart> ; Py_ssize_t i <S2SV_ModEnd> ; if ( <S2SV_ModStart> ) { expr_ty val <S2SV_ModEnd> ; res = <S2SV_ModStart> ) , & val <S2SV_ModEnd> , arena ) <S2SV_ModStart> , i , val <S2SV_ModEnd> ) ; } <S2SV_ModStart> ) ; } if ( lookup_attr_id <S2SV_ModEnd> ( obj , <S2SV_ModStart> , & PyId_is_async , & tmp ) < 0 ) { return 1 ; } <S2SV_ModEnd> if ( tmp <S2SV_ModStart> == NULL ) { PyErr_SetString ( PyExc_TypeError , \"required<S2SV_blank>field<S2SV_blank>\\\\\"is_async\\\\\"<S2SV_blank>missing<S2SV_blank>from<S2SV_blank>comprehension\" ) ; return 1 ; } else { int res <S2SV_ModEnd> ; res = <S2SV_ModStart> ( tmp ) <S2SV_ModEnd> ; } *\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5771\n\n```\nCWE-416 PHP_MINIT_FUNCTION ( spl_array ) { REGISTER_SPL_STD_CLASS_EX ( ArrayObject , spl_array_object_new , spl_funcs_ArrayObject ) ; REGISTER_SPL_IMPLEMENTS ( ArrayObject , Aggregate ) ; REGISTER_SPL_IMPLEMENTS ( ArrayObject , ArrayAccess ) ; REGISTER_SPL_IMPLEMENTS ( ArrayObject , Serializable ) ; REGISTER_SPL_IMPLEMENTS ( ArrayObject , Countable ) ; memcpy ( & spl_handler_ArrayObject , zend_get_std_object_handlers ( ) , sizeof ( zend_object_handlers ) ) ; spl_handler_ArrayObject . clone_obj = spl_array_object_clone ; spl_handler_ArrayObject . read_dimension = spl_array_read_dimension ; spl_handler_ArrayObject . write_dimension = spl_array_write_dimension ; spl_handler_ArrayObject . unset_dimension = spl_array_unset_dimension ; spl_handler_ArrayObject . has_dimension = spl_array_has_dimension ; spl_handler_ArrayObject . count_elements = spl_array_object_count_elements ; spl_handler_ArrayObject . get_properties = spl_array_get_properties ; <S2SV_StartBug> spl_handler_ArrayObject . get_debug_info = spl_array_get_debug_info ; <S2SV_EndBug> spl_handler_ArrayObject . read_property = spl_array_read_property ; spl_handler_ArrayObject . write_property = spl_array_write_property ; spl_handler_ArrayObject . get_property_ptr_ptr = spl_array_get_property_ptr_ptr ; spl_handler_ArrayObject . has_property = spl_array_has_property ; spl_handler_ArrayObject . unset_property = spl_array_unset_property ; spl_handler_ArrayObject . compare_objects = spl_array_compare_objects ; REGISTER_SPL_STD_CLASS_EX ( ArrayIterator , spl_array_object_new , spl_funcs_ArrayIterator ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , Iterator ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , ArrayAccess ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , SeekableIterator ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , Serializable ) ; REGISTER_SPL_IMPLEMENTS ( ArrayIterator , Countable ) ; memcpy ( & spl_handler_ArrayIterator , & spl_handler_ArrayObject , sizeof ( zend_object_handlers ) ) ; spl_ce_ArrayIterator -> get_iterator = spl_array_get_iterator ; REGISTER_SPL_SUB_CLASS_EX ( RecursiveArrayIterator , ArrayIterator , spl_array_object_new , spl_funcs_RecursiveArrayIterator ) ; REGISTER_SPL_IMPLEMENTS ( RecursiveArrayIterator , RecursiveIterator ) ; spl_ce_RecursiveArrayIterator -> get_iterator = spl_array_get_iterator ; REGISTER_SPL_CLASS_CONST_LONG ( ArrayObject , \"STD_PROP_LIST\" , SPL_ARRAY_STD_PROP_LIST ) ; REGISTER_SPL_CLASS_CONST_LONG ( ArrayObject , \"ARRAY_AS_PROPS\" , SPL_ARRAY_ARRAY_AS_PROPS ) ; REGISTER_SPL_CLASS_CONST_LONG ( ArrayIterator , \"STD_PROP_LIST\" , SPL_ARRAY_STD_PROP_LIST ) ; REGISTER_SPL_CLASS_CONST_LONG ( ArrayIterator , \"ARRAY_AS_PROPS\" , SPL_ARRAY_ARRAY_AS_PROPS ) ; REGISTER_SPL_CLASS_CONST_LONG ( RecursiveArrayIterator , \"CHILD_ARRAYS_ONLY\" , SPL_ARRAY_CHILD_ARRAYS_ONLY ) ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> get_debug_info = spl_array_get_debug_info ; spl_handler_ArrayObject . get_gc = spl_array_get_gc\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5735\n\n```\nCWE-190 static pngquant_error rwpng_read_image24_libpng ( FILE * infile , png24_image * mainprog_ptr , int verbose ) { png_structp png_ptr = NULL ; png_infop info_ptr = NULL ; png_size_t rowbytes ; int color_type , bit_depth ; png_ptr = png_create_read_struct ( PNG_LIBPNG_VER_STRING , mainprog_ptr , rwpng_error_handler , verbose ? rwpng_warning_stderr_handler : rwpng_warning_silent_handler ) ; if ( ! png_ptr ) { return PNG_OUT_OF_MEMORY_ERROR ; } info_ptr = png_create_info_struct ( png_ptr ) ; if ( ! info_ptr ) { png_destroy_read_struct ( & png_ptr , NULL , NULL ) ; return PNG_OUT_OF_MEMORY_ERROR ; } if ( setjmp ( mainprog_ptr -> jmpbuf ) ) { png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; return LIBPNG_FATAL_ERROR ; } # if defined ( PNG_SKIP_sRGB_CHECK_PROFILE ) && defined ( PNG_SET_OPTION_SUPPORTED ) png_set_option ( png_ptr , PNG_SKIP_sRGB_CHECK_PROFILE , PNG_OPTION_ON ) ; # endif # if PNG_LIBPNG_VER >= 10500 && defined ( PNG_UNKNOWN_CHUNKS_SUPPORTED ) png_set_keep_unknown_chunks ( png_ptr , PNG_HANDLE_CHUNK_IF_SAFE , ( png_const_bytep ) \"pHYs\\\\0iTXt\\\\0tEXt\\\\0zTXt\" , 4 ) ; # endif png_set_read_user_chunk_fn ( png_ptr , & mainprog_ptr -> chunks , read_chunk_callback ) ; struct rwpng_read_data read_data = { infile , 0 } ; png_set_read_fn ( png_ptr , & read_data , user_read_data ) ; png_read_info ( png_ptr , info_ptr ) ; png_get_IHDR ( png_ptr , info_ptr , & mainprog_ptr -> width , & mainprog_ptr -> height , & bit_depth , & color_type , NULL , NULL , NULL ) ; <S2SV_StartBug> if ( mainprog_ptr -> width > INT_MAX / mainprog_ptr -> height ) { <S2SV_EndBug> png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; return PNG_OUT_OF_MEMORY_ERROR ; } if ( ! ( color_type & PNG_COLOR_MASK_ALPHA ) ) { # ifdef PNG_READ_FILLER_SUPPORTED png_set_expand ( png_ptr ) ; png_set_filler ( png_ptr , 65535L , PNG_FILLER_AFTER ) ; # else fprintf ( stderr , \"pngquant<S2SV_blank>readpng:<S2SV_blank><S2SV_blank>image<S2SV_blank>is<S2SV_blank>neither<S2SV_blank>RGBA<S2SV_blank>nor<S2SV_blank>GA\\\\n\" ) ; png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; mainprog_ptr -> retval = WRONG_INPUT_COLOR_TYPE ; return mainprog_ptr -> retval ; # endif } if ( bit_depth == 16 ) { png_set_strip_16 ( png_ptr ) ; } if ( ! ( color_type & PNG_COLOR_MASK_COLOR ) ) { png_set_gray_to_rgb ( png_ptr ) ; } double gamma = 0.45455 ; if ( png_get_valid ( png_ptr , info_ptr , PNG_INFO_sRGB ) ) { mainprog_ptr -> input_color = RWPNG_SRGB ; mainprog_ptr -> output_color = RWPNG_SRGB ; } else { png_get_gAMA ( png_ptr , info_ptr , & gamma ) ; if ( gamma > 0 && gamma <= 1.0 ) { mainprog_ptr -> input_color = RWPNG_GAMA_ONLY ; mainprog_ptr -> output_color = RWPNG_GAMA_ONLY ; } else { fprintf ( stderr , \"pngquant<S2SV_blank>readpng:<S2SV_blank><S2SV_blank>ignored<S2SV_blank>out-of-range<S2SV_blank>gamma<S2SV_blank>%f\\\\n\" , gamma ) ; mainprog_ptr -> input_color = RWPNG_NONE ; mainprog_ptr -> output_color = RWPNG_NONE ; gamma = 0.45455 ; } } mainprog_ptr -> gamma = gamma ; png_set_interlace_handling ( png_ptr ) ; png_read_update_info ( png_ptr , info_ptr ) ; rowbytes = png_get_rowbytes ( png_ptr , info_ptr ) ; <S2SV_StartBug> if ( ( mainprog_ptr -> rgba_data = malloc ( rowbytes * mainprog_ptr -> height ) ) == NULL ) { <S2SV_EndBug> fprintf ( stderr , \"pngquant<S2SV_blank>readpng:<S2SV_blank><S2SV_blank>unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>image<S2SV_blank>data\\\\n\" ) ; png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; return PNG_OUT_OF_MEMORY_ERROR ; } png_bytepp row_pointers = rwpng_create_row_pointers ( info_ptr , png_ptr , mainprog_ptr -> rgba_data , mainprog_ptr -> height , 0 ) ; png_read_image ( png_ptr , row_pointers ) ; png_read_end ( png_ptr , NULL ) ; # if USE_LCMS # if PNG_LIBPNG_VER < 10500 png_charp ProfileData ; # else png_bytep ProfileData ; # endif png_uint_32 ProfileLen ; cmsHPROFILE hInProfile = NULL ; int COLOR_PNG = color_type & PNG_COLOR_MASK_COLOR ; if ( png_get_iCCP ( png_ptr , info_ptr , & ( png_charp ) { 0 } , & ( int ) { 0 } , & ProfileData , & ProfileLen ) ) { hInProfile = cmsOpenProfileFromMem ( ProfileData , ProfileLen ) ; cmsColorSpaceSignature colorspace = cmsGetColorSpace ( hInProfile ) ; if ( colorspace == cmsSigRgbData && COLOR_PNG ) { mainprog_ptr -> input_color = RWPNG_ICCP ; mainprog_ptr -> output_color = RWPNG_SRGB ; } else { if ( colorspace == cmsSigGrayData && ! COLOR_PNG ) { mainprog_ptr -> input_color = RWPNG_ICCP_WARN_GRAY ; mainprog_ptr -> output_color = RWPNG_SRGB ; } cmsCloseProfile ( hInProfile ) ; hInProfile = NULL ; } } if ( hInProfile == NULL && COLOR_PNG && ! png_get_valid ( png_ptr , info_ptr , PNG_INFO_sRGB ) && png_get_valid ( png_ptr , info_ptr , PNG_INFO_gAMA ) && png_get_valid ( png_ptr , info_ptr , PNG_INFO_cHRM ) ) { cmsCIExyY WhitePoint ; cmsCIExyYTRIPLE Primaries ; png_get_cHRM ( png_ptr , info_ptr , & WhitePoint . x , & WhitePoint . y , & Primaries . Red . x , & Primaries . Red . y , & Primaries . Green . x , & Primaries . Green . y , & Primaries . Blue . x , & Primaries . Blue . y ) ; WhitePoint . Y = Primaries . Red . Y = Primaries . Green . Y = Primaries . Blue . Y = 1.0 ; cmsToneCurve * GammaTable [ 3 ] ; GammaTable [ 0 ] = GammaTable [ 1 ] = GammaTable [ 2 ] = cmsBuildGamma ( NULL , 1 / gamma ) ; hInProfile = cmsCreateRGBProfile ( & WhitePoint , & Primaries , GammaTable ) ; cmsFreeToneCurve ( GammaTable [ 0 ] ) ; mainprog_ptr -> input_color = RWPNG_GAMA_CHRM ; mainprog_ptr -> output_color = RWPNG_SRGB ; } if ( hInProfile != NULL ) { cmsHPROFILE hOutProfile = cmsCreate_sRGBProfile ( ) ; cmsHTRANSFORM hTransform = cmsCreateTransform ( hInProfile , TYPE_RGBA_8 , hOutProfile , TYPE_RGBA_8 , INTENT_PERCEPTUAL , omp_get_max_threads ( ) > 1 ? cmsFLAGS_NOCACHE : 0 ) ; # pragma omp parallel for if ( mainprog_ptr -> height * mainprog_ptr -> width > 8000 ) schedule ( static ) for ( unsigned int i = 0 ; i < mainprog_ptr -> height ; i ++ ) { cmsDoTransform ( hTransform , row_pointers [ i ] , row_pointers [ i ] , mainprog_ptr -> width ) ; } cmsDeleteTransform ( hTransform ) ; cmsCloseProfile ( hOutProfile ) ; cmsCloseProfile ( hInProfile ) ; mainprog_ptr -> gamma = 0.45455 ; } # endif png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; mainprog_ptr -> file_size = read_data . bytes_read ; mainprog_ptr -> row_pointers = ( unsigned char * * ) row_pointers ; return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ) ; <S2SV_ModEnd> if ( ! <S2SV_ModStart> ; if ( rowbytes > INT_MAX / mainprog_ptr -> height ) { png_destroy_read_struct ( & png_ptr , & info_ptr , NULL ) ; return PNG_OUT_OF_MEMORY_ERROR ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-12897\n\n```\nCWE-125 void isoclns_print ( netdissect_options * ndo , <S2SV_StartBug> const uint8_t * p , u_int length , u_int caplen ) <S2SV_EndBug> { <S2SV_StartBug> if ( caplen <= 1 ) { <S2SV_EndBug> ND_PRINT ( ( ndo , \"|OSI\" ) ) ; return ; } if ( ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"OSI<S2SV_blank>NLPID<S2SV_blank>%s<S2SV_blank>(0x%02x):<S2SV_blank>\" , tok2str ( nlpid_values , \"Unknown\" , * p ) , * p ) ) ; switch ( * p ) { case NLPID_CLNP : if ( ! clnp_print ( ndo , p , length ) ) <S2SV_StartBug> print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , caplen ) ; <S2SV_EndBug> break ; case NLPID_ESIS : esis_print ( ndo , p , length ) ; return ; case NLPID_ISIS : if ( ! isis_print ( ndo , p , length ) ) <S2SV_StartBug> print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , caplen ) ; <S2SV_EndBug> break ; case NLPID_NULLNS : ND_PRINT ( ( ndo , \"%slength:<S2SV_blank>%u\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , length ) ) ; break ; case NLPID_Q933 : q933_print ( ndo , p + 1 , length - 1 ) ; break ; case NLPID_IP : ip_print ( ndo , p + 1 , length - 1 ) ; break ; case NLPID_IP6 : ip6_print ( ndo , p + 1 , length - 1 ) ; break ; case NLPID_PPP : ppp_print ( ndo , p + 1 , length - 1 ) ; break ; default : if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"OSI<S2SV_blank>NLPID<S2SV_blank>0x%02x<S2SV_blank>unknown\" , * p ) ) ; ND_PRINT ( ( ndo , \"%slength:<S2SV_blank>%u\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , length ) ) ; <S2SV_StartBug> if ( caplen > 1 ) <S2SV_EndBug> <S2SV_StartBug> print_unknown_data ( ndo , p , \"\\\\n\\\\t\" , caplen ) ; <S2SV_EndBug> break ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , u_int length <S2SV_ModEnd> ) { if <S2SV_ModStart> { if ( ! ND_TTEST ( * p ) <S2SV_ModEnd> ) { ND_PRINT <S2SV_ModStart> , \"\\\\n\\\\t\" , length <S2SV_ModEnd> ) ; break <S2SV_ModStart> , \"\\\\n\\\\t\" , length <S2SV_ModEnd> ) ; break <S2SV_ModStart> ; if ( length <S2SV_ModEnd> > 1 ) <S2SV_ModStart> , \"\\\\n\\\\t\" , length <S2SV_ModEnd> ) ; break\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13005\n\n```\nCWE-125 static int xid_map_enter ( netdissect_options * ndo , const struct sunrpc_msg * rp , const u_char * bp ) { const struct ip * ip = NULL ; const struct ip6_hdr * ip6 = NULL ; struct xid_map_entry * xmep ; if ( ! ND_TTEST ( rp -> rm_call . cb_vers ) ) return ( 0 ) ; switch ( IP_V ( ( const struct ip * ) bp ) ) { case 4 : ip = ( const struct ip * ) bp ; break ; case 6 : ip6 = ( const struct ip6_hdr * ) bp ; break ; default : return ( 1 ) ; } xmep = & xid_map [ xid_map_next ] ; if ( ++ xid_map_next >= XIDMAPSIZE ) xid_map_next = 0 ; UNALIGNED_MEMCPY ( & xmep -> xid , & rp -> rm_xid , sizeof ( xmep -> xid ) ) ; if ( ip ) { xmep -> ipver = 4 ; UNALIGNED_MEMCPY ( & xmep -> client , & ip -> ip_src , sizeof ( ip -> ip_src ) ) ; UNALIGNED_MEMCPY ( & xmep -> server , & ip -> ip_dst , sizeof ( ip -> ip_dst ) ) ; } else if ( ip6 ) { xmep -> ipver = 6 ; UNALIGNED_MEMCPY ( & xmep -> client , & ip6 -> ip6_src , sizeof ( ip6 -> ip6_src ) ) ; UNALIGNED_MEMCPY ( & xmep -> server , & ip6 -> ip6_dst , sizeof ( ip6 -> ip6_dst ) ) ; } <S2SV_StartBug> xmep -> proc = EXTRACT_32BITS ( & rp -> rm_call . cb_proc ) ; <S2SV_EndBug> xmep -> vers = EXTRACT_32BITS ( & rp -> rm_call . cb_vers ) ; return ( 1 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; } if ( ! ND_TTEST ( rp -> rm_call . cb_proc ) ) return ( 0 ) ; <S2SV_ModStart> rm_call . cb_proc ) ; if ( ! ND_TTEST ( rp -> rm_call . cb_vers ) ) return ( 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9074\n\n```\nCWE-125 int ip6_fragment ( struct net * net , struct sock * sk , struct sk_buff * skb , int ( * output ) ( struct net * , struct sock * , struct sk_buff * ) ) { struct sk_buff * frag ; struct rt6_info * rt = ( struct rt6_info * ) skb_dst ( skb ) ; struct ipv6_pinfo * np = skb -> sk && ! dev_recursion_level ( ) ? inet6_sk ( skb -> sk ) : NULL ; struct ipv6hdr * tmp_hdr ; struct frag_hdr * fh ; unsigned int mtu , hlen , left , len ; int hroom , troom ; __be32 frag_id ; int ptr , offset = 0 , err = 0 ; u8 * prevhdr , nexthdr = 0 ; <S2SV_StartBug> hlen = ip6_find_1stfragopt ( skb , & prevhdr ) ; <S2SV_EndBug> nexthdr = * prevhdr ; mtu = ip6_skb_dst_mtu ( skb ) ; if ( unlikely ( ! skb -> ignore_df && skb -> len > mtu ) ) goto fail_toobig ; if ( IP6CB ( skb ) -> frag_max_size ) { if ( IP6CB ( skb ) -> frag_max_size > mtu ) goto fail_toobig ; mtu = IP6CB ( skb ) -> frag_max_size ; if ( mtu < IPV6_MIN_MTU ) mtu = IPV6_MIN_MTU ; } if ( np && np -> frag_size < mtu ) { if ( np -> frag_size ) mtu = np -> frag_size ; } if ( mtu < hlen + sizeof ( struct frag_hdr ) + 8 ) goto fail_toobig ; mtu -= hlen + sizeof ( struct frag_hdr ) ; frag_id = ipv6_select_ident ( net , & ipv6_hdr ( skb ) -> daddr , & ipv6_hdr ( skb ) -> saddr ) ; if ( skb -> ip_summed == CHECKSUM_PARTIAL && ( err = skb_checksum_help ( skb ) ) ) goto fail ; hroom = LL_RESERVED_SPACE ( rt -> dst . dev ) ; if ( skb_has_frag_list ( skb ) ) { unsigned int first_len = skb_pagelen ( skb ) ; struct sk_buff * frag2 ; if ( first_len - hlen > mtu || ( ( first_len - hlen ) & 7 ) || skb_cloned ( skb ) || skb_headroom ( skb ) < ( hroom + sizeof ( struct frag_hdr ) ) ) goto slow_path ; skb_walk_frags ( skb , frag ) { if ( frag -> len > mtu || ( ( frag -> len & 7 ) && frag -> next ) || skb_headroom ( frag ) < ( hlen + hroom + sizeof ( struct frag_hdr ) ) ) goto slow_path_clean ; if ( skb_shared ( frag ) ) goto slow_path_clean ; BUG_ON ( frag -> sk ) ; if ( skb -> sk ) { frag -> sk = skb -> sk ; frag -> destructor = sock_wfree ; } skb -> truesize -= frag -> truesize ; } err = 0 ; offset = 0 ; * prevhdr = NEXTHDR_FRAGMENT ; tmp_hdr = kmemdup ( skb_network_header ( skb ) , hlen , GFP_ATOMIC ) ; if ( ! tmp_hdr ) { IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; err = - ENOMEM ; goto fail ; } frag = skb_shinfo ( skb ) -> frag_list ; skb_frag_list_init ( skb ) ; __skb_pull ( skb , hlen ) ; fh = ( struct frag_hdr * ) __skb_push ( skb , sizeof ( struct frag_hdr ) ) ; __skb_push ( skb , hlen ) ; skb_reset_network_header ( skb ) ; memcpy ( skb_network_header ( skb ) , tmp_hdr , hlen ) ; fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; fh -> frag_off = htons ( IP6_MF ) ; fh -> identification = frag_id ; first_len = skb_pagelen ( skb ) ; skb -> data_len = first_len - skb_headlen ( skb ) ; skb -> len = first_len ; ipv6_hdr ( skb ) -> payload_len = htons ( first_len - sizeof ( struct ipv6hdr ) ) ; dst_hold ( & rt -> dst ) ; for ( ; ; ) { if ( frag ) { frag -> ip_summed = CHECKSUM_NONE ; skb_reset_transport_header ( frag ) ; fh = ( struct frag_hdr * ) __skb_push ( frag , sizeof ( struct frag_hdr ) ) ; __skb_push ( frag , hlen ) ; skb_reset_network_header ( frag ) ; memcpy ( skb_network_header ( frag ) , tmp_hdr , hlen ) ; offset += skb -> len - hlen - sizeof ( struct frag_hdr ) ; fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; fh -> frag_off = htons ( offset ) ; if ( frag -> next ) fh -> frag_off |= htons ( IP6_MF ) ; fh -> identification = frag_id ; ipv6_hdr ( frag ) -> payload_len = htons ( frag -> len - sizeof ( struct ipv6hdr ) ) ; ip6_copy_metadata ( frag , skb ) ; } err = output ( net , sk , skb ) ; if ( ! err ) IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGCREATES ) ; if ( err || ! frag ) break ; skb = frag ; frag = skb -> next ; skb -> next = NULL ; } kfree ( tmp_hdr ) ; if ( err == 0 ) { IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGOKS ) ; ip6_rt_put ( rt ) ; return 0 ; } kfree_skb_list ( frag ) ; IP6_INC_STATS ( net , ip6_dst_idev ( & rt -> dst ) , IPSTATS_MIB_FRAGFAILS ) ; ip6_rt_put ( rt ) ; return err ; slow_path_clean : skb_walk_frags ( skb , frag2 ) { if ( frag2 == frag ) break ; frag2 -> sk = NULL ; frag2 -> destructor = NULL ; skb -> truesize += frag2 -> truesize ; } } slow_path : left = skb -> len - hlen ; ptr = hlen ; troom = rt -> dst . dev -> needed_tailroom ; while ( left > 0 ) { u8 * fragnexthdr_offset ; len = left ; if ( len > mtu ) len = mtu ; if ( len < left ) { len &= ~ 7 ; } frag = alloc_skb ( len + hlen + sizeof ( struct frag_hdr ) + hroom + troom , GFP_ATOMIC ) ; if ( ! frag ) { IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; err = - ENOMEM ; goto fail ; } ip6_copy_metadata ( frag , skb ) ; skb_reserve ( frag , hroom ) ; skb_put ( frag , len + hlen + sizeof ( struct frag_hdr ) ) ; skb_reset_network_header ( frag ) ; fh = ( struct frag_hdr * ) ( skb_network_header ( frag ) + hlen ) ; frag -> transport_header = ( frag -> network_header + hlen + sizeof ( struct frag_hdr ) ) ; if ( skb -> sk ) skb_set_owner_w ( frag , skb -> sk ) ; skb_copy_from_linear_data ( skb , skb_network_header ( frag ) , hlen ) ; fragnexthdr_offset = skb_network_header ( frag ) ; fragnexthdr_offset += prevhdr - skb_network_header ( skb ) ; * fragnexthdr_offset = NEXTHDR_FRAGMENT ; fh -> nexthdr = nexthdr ; fh -> reserved = 0 ; fh -> identification = frag_id ; BUG_ON ( skb_copy_bits ( skb , ptr , skb_transport_header ( frag ) , len ) ) ; left -= len ; fh -> frag_off = htons ( offset ) ; if ( left > 0 ) fh -> frag_off |= htons ( IP6_MF ) ; ipv6_hdr ( frag ) -> payload_len = htons ( frag -> len - sizeof ( struct ipv6hdr ) ) ; ptr += len ; offset += len ; err = output ( net , sk , frag ) ; if ( err ) goto fail ; IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGCREATES ) ; } IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGOKS ) ; consume_skb ( skb ) ; return err ; fail_toobig : if ( skb -> sk && dst_allfrag ( skb_dst ( skb ) ) ) sk_nocaps_add ( skb -> sk , NETIF_F_GSO_MASK ) ; skb -> dev = skb_dst ( skb ) -> dev ; icmpv6_send ( skb , ICMPV6_PKT_TOOBIG , 0 , mtu ) ; err = - EMSGSIZE ; fail : IP6_INC_STATS ( net , ip6_dst_idev ( skb_dst ( skb ) ) , IPSTATS_MIB_FRAGFAILS ) ; kfree_skb ( skb ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> prevhdr ) ; if ( hlen < 0 ) { err = hlen ; goto fail ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-9016\n\n```\nCWE-264 static bool blk_kick_flush ( struct request_queue * q , struct blk_flush_queue * fq ) { struct list_head * pending = & fq -> flush_queue [ fq -> flush_pending_idx ] ; struct request * first_rq = list_first_entry ( pending , struct request , flush . list ) ; struct request * flush_rq = fq -> flush_rq ; if ( fq -> flush_pending_idx != fq -> flush_running_idx || list_empty ( pending ) ) return false ; if ( ! list_empty ( & fq -> flush_data_in_flight ) && time_before ( jiffies , fq -> flush_pending_since + FLUSH_PENDING_TIMEOUT ) ) return false ; fq -> flush_pending_idx ^= 1 ; blk_rq_init ( q , flush_rq ) ; if ( q -> mq_ops ) { <S2SV_StartBug> flush_rq -> mq_ctx = first_rq -> mq_ctx ; <S2SV_EndBug> <S2SV_StartBug> flush_rq -> tag = first_rq -> tag ; <S2SV_EndBug> } flush_rq -> cmd_type = REQ_TYPE_FS ; flush_rq -> cmd_flags = WRITE_FLUSH | REQ_FLUSH_SEQ ; flush_rq -> rq_disk = first_rq -> rq_disk ; flush_rq -> end_io = flush_end_io ; return blk_flush_queue_rq ( flush_rq , false ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> mq_ops ) { struct blk_mq_hw_ctx * hctx ; <S2SV_ModStart> first_rq -> tag ; fq -> orig_rq = first_rq ; hctx = q -> mq_ops -> map_queue ( q , first_rq -> mq_ctx -> cpu ) ; blk_mq_tag_set_rq ( hctx , first_rq -> tag , flush_rq )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-12896\n\n```\nCWE-190 SYSCALL_DEFINE1 ( timer_getoverrun , timer_t , timer_id ) { struct k_itimer * timr ; int overrun ; unsigned long flags ; timr = lock_timer ( timer_id , & flags ) ; if ( ! timr ) return - EINVAL ; <S2SV_StartBug> overrun = timr -> it_overrun_last ; <S2SV_EndBug> unlock_timer ( timr , flags ) ; return overrun ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; overrun = timer_overrun_to_int ( timr , 0 ) <S2SV_ModEnd> ; unlock_timer (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7271\n\n```\nCWE-20 static int rawsock_recvmsg ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t len , int flags ) { int noblock = flags & MSG_DONTWAIT ; struct sock * sk = sock -> sk ; struct sk_buff * skb ; int copied ; int rc ; pr_debug ( \"sock=%p<S2SV_blank>sk=%p<S2SV_blank>len=%zu<S2SV_blank>flags=%d\\\\n\" , sock , sk , len , flags ) ; skb = skb_recv_datagram ( sk , flags , noblock , & rc ) ; if ( ! skb ) return rc ; <S2SV_StartBug> msg -> msg_namelen = 0 ; <S2SV_EndBug> copied = skb -> len ; if ( len < copied ) { msg -> msg_flags |= MSG_TRUNC ; copied = len ; } rc = skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; skb_free_datagram ( sk , skb ) ; return rc ? : copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return rc ; <S2SV_ModEnd> copied = skb\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5844\n\n```\nCWE-190 static int choose_volume ( struct archive_read * a , struct iso9660 * iso9660 ) { struct file_info * file ; int64_t skipsize ; struct vd * vd ; const void * block ; char seenJoliet ; vd = & ( iso9660 -> primary ) ; if ( ! iso9660 -> opt_support_joliet ) iso9660 -> seenJoliet = 0 ; if ( iso9660 -> seenJoliet && vd -> location > iso9660 -> joliet . location ) vd = & ( iso9660 -> joliet ) ; <S2SV_StartBug> skipsize = LOGICAL_BLOCK_SIZE * vd -> location ; <S2SV_EndBug> skipsize = __archive_read_consume ( a , skipsize ) ; if ( skipsize < 0 ) return ( ( int ) skipsize ) ; iso9660 -> current_position = skipsize ; block = __archive_read_ahead ( a , vd -> size , NULL ) ; if ( block == NULL ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>full<S2SV_blank>block<S2SV_blank>when<S2SV_blank>scanning<S2SV_blank>\" \"ISO9660<S2SV_blank>directory<S2SV_blank>list\" ) ; return ( ARCHIVE_FATAL ) ; } seenJoliet = iso9660 -> seenJoliet ; iso9660 -> seenJoliet = 0 ; file = parse_file_info ( a , NULL , block ) ; if ( file == NULL ) return ( ARCHIVE_FATAL ) ; iso9660 -> seenJoliet = seenJoliet ; if ( vd == & ( iso9660 -> primary ) && iso9660 -> seenRockridge && iso9660 -> seenJoliet ) iso9660 -> seenJoliet = 0 ; if ( vd == & ( iso9660 -> primary ) && ! iso9660 -> seenRockridge && iso9660 -> seenJoliet ) { vd = & ( iso9660 -> joliet ) ; <S2SV_StartBug> skipsize = LOGICAL_BLOCK_SIZE * vd -> location ; <S2SV_EndBug> skipsize -= iso9660 -> current_position ; skipsize = __archive_read_consume ( a , skipsize ) ; if ( skipsize < 0 ) return ( ( int ) skipsize ) ; iso9660 -> current_position += skipsize ; block = __archive_read_ahead ( a , vd -> size , NULL ) ; if ( block == NULL ) { archive_set_error ( & a -> archive , ARCHIVE_ERRNO_MISC , \"Failed<S2SV_blank>to<S2SV_blank>read<S2SV_blank>full<S2SV_blank>block<S2SV_blank>when<S2SV_blank>scanning<S2SV_blank>\" \"ISO9660<S2SV_blank>directory<S2SV_blank>list\" ) ; return ( ARCHIVE_FATAL ) ; } iso9660 -> seenJoliet = 0 ; file = parse_file_info ( a , NULL , block ) ; if ( file == NULL ) return ( ARCHIVE_FATAL ) ; iso9660 -> seenJoliet = seenJoliet ; } if ( add_entry ( a , iso9660 , file ) != ARCHIVE_OK ) return ( ARCHIVE_FATAL ) ; if ( iso9660 -> seenRockridge ) { a -> archive . archive_format = ARCHIVE_FORMAT_ISO9660_ROCKRIDGE ; a -> archive . archive_format_name = \"ISO9660<S2SV_blank>with<S2SV_blank>Rockridge<S2SV_blank>extensions\" ; } return ( ARCHIVE_OK ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = LOGICAL_BLOCK_SIZE * ( int64_t ) <S2SV_ModStart> = LOGICAL_BLOCK_SIZE * ( int64_t )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void single_motion_search ( VP9_COMP * cpi , MACROBLOCK * x , <S2SV_StartBug> const TileInfo * const tile , <S2SV_EndBug> BLOCK_SIZE bsize , int mi_row , int mi_col , int_mv * tmp_mv , int * rate_mv ) { MACROBLOCKD * xd = & x -> e_mbd ; <S2SV_StartBug> VP9_COMMON * cm = & cpi -> common ; <S2SV_EndBug> MB_MODE_INFO * mbmi = & xd -> mi [ 0 ] -> mbmi ; <S2SV_StartBug> struct buf_2d backup_yv12 [ MAX_MB_PLANE ] = { { 0 } } ; <S2SV_EndBug> int bestsme = INT_MAX ; <S2SV_StartBug> int further_steps , step_param ; <S2SV_EndBug> int sadpb = x -> sadperbit16 ; MV mvp_full ; int ref = mbmi -> ref_frame [ 0 ] ; <S2SV_StartBug> MV ref_mv = mbmi -> ref_mvs [ ref ] [ 0 ] . as_mv ; <S2SV_EndBug> int tmp_col_min = x -> mv_col_min ; int tmp_col_max = x -> mv_col_max ; int tmp_row_min = x -> mv_row_min ; <S2SV_StartBug> int tmp_row_max = x -> mv_row_max ; <S2SV_EndBug> const YV12_BUFFER_CONFIG * scaled_ref_frame = vp9_get_scaled_ref_frame ( cpi , ref ) ; MV pred_mv [ 3 ] ; <S2SV_StartBug> pred_mv [ 0 ] = mbmi -> ref_mvs [ ref ] [ 0 ] . as_mv ; <S2SV_EndBug> <S2SV_StartBug> pred_mv [ 1 ] = mbmi -> ref_mvs [ ref ] [ 1 ] . as_mv ; <S2SV_EndBug> <S2SV_StartBug> pred_mv [ 2 ] = x -> pred_mv [ ref ] . as_mv ; <S2SV_EndBug> if ( scaled_ref_frame ) { int i ; for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) backup_yv12 [ i ] = xd -> plane [ i ] . pre [ 0 ] ; vp9_setup_pre_planes ( xd , 0 , scaled_ref_frame , mi_row , mi_col , NULL ) ; } vp9_set_mv_search_range ( x , & ref_mv ) ; <S2SV_StartBug> if ( cpi -> sf . auto_mv_step_size && cpi -> common . show_frame ) { <S2SV_EndBug> <S2SV_StartBug> step_param = ( vp9_init_search_range ( cpi , x -> max_mv_context [ ref ] ) + <S2SV_EndBug> <S2SV_StartBug> cpi -> mv_step_param ) >> 1 ; <S2SV_EndBug> } else { step_param = cpi -> mv_step_param ; } <S2SV_StartBug> if ( cpi -> sf . adaptive_motion_search && bsize < BLOCK_64X64 && <S2SV_EndBug> cpi -> common . show_frame ) { <S2SV_StartBug> int boffset = 2 * ( b_width_log2 ( BLOCK_64X64 ) - MIN ( b_height_log2 ( bsize ) , <S2SV_EndBug> b_width_log2 ( bsize ) ) ) ; step_param = MAX ( step_param , boffset ) ; } if ( cpi -> sf . adaptive_motion_search ) { int bwl = b_width_log2_lookup [ bsize ] ; <S2SV_StartBug> int bhl = b_height_log2_lookup [ bsize ] ; <S2SV_EndBug> int i ; int tlevel = x -> pred_mv_sad [ ref ] >> ( bwl + bhl + 4 ) ; if ( tlevel < 5 ) step_param += 2 ; <S2SV_StartBug> for ( i = LAST_FRAME ; i <= ALTREF_FRAME && cpi -> common . show_frame ; ++ i ) { <S2SV_EndBug> if ( ( x -> pred_mv_sad [ ref ] >> 3 ) > x -> pred_mv_sad [ i ] ) { <S2SV_StartBug> x -> pred_mv [ ref ] . as_int = 0 ; <S2SV_EndBug> tmp_mv -> as_int = INVALID_MV ; if ( scaled_ref_frame ) { int i ; <S2SV_StartBug> for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) <S2SV_EndBug> xd -> plane [ i ] . pre [ 0 ] = backup_yv12 [ i ] ; } <S2SV_StartBug> return ; <S2SV_EndBug> } } } mvp_full = pred_mv [ x -> mv_best_ref_index [ ref ] ] ; mvp_full . col >>= 3 ; mvp_full . row >>= 3 ; <S2SV_StartBug> further_steps = ( cpi -> sf . max_step_search_steps - 1 ) - step_param ; <S2SV_EndBug> if ( cpi -> sf . search_method == FAST_DIAMOND ) { bestsme = vp9_fast_dia_search ( x , & mvp_full , step_param , sadpb , 0 , & cpi -> fn_ptr [ bsize ] , 1 , & ref_mv , & tmp_mv -> as_mv ) ; if ( bestsme < INT_MAX ) <S2SV_StartBug> bestsme = vp9_get_mvpred_var ( x , & tmp_mv -> as_mv , & ref_mv , <S2SV_EndBug> <S2SV_StartBug> & cpi -> fn_ptr [ bsize ] , 1 ) ; <S2SV_EndBug> <S2SV_StartBug> } else if ( cpi -> sf . search_method == FAST_HEX ) { <S2SV_EndBug> bestsme = vp9_fast_hex_search ( x , & mvp_full , step_param , sadpb , 0 , & cpi -> fn_ptr [ bsize ] , 1 , & ref_mv , & tmp_mv -> as_mv ) ; if ( bestsme < INT_MAX ) bestsme = vp9_get_mvpred_var ( x , & tmp_mv -> as_mv , & ref_mv , & cpi -> fn_ptr [ bsize ] , 1 ) ; <S2SV_StartBug> } else if ( cpi -> sf . search_method == HEX ) { <S2SV_EndBug> bestsme = vp9_hex_search ( x , & mvp_full , step_param , sadpb , 1 , & cpi -> fn_ptr [ bsize ] , 1 , & ref_mv , & tmp_mv -> as_mv ) ; if ( bestsme < INT_MAX ) bestsme = vp9_get_mvpred_var ( x , & tmp_mv -> as_mv , & ref_mv , & cpi -> fn_ptr [ bsize ] , 1 ) ; } else if ( cpi -> sf . search_method == SQUARE ) { bestsme = vp9_square_search ( x , & mvp_full , step_param , sadpb , 1 , & cpi -> fn_ptr [ bsize ] , 1 , & ref_mv , & tmp_mv -> as_mv ) ; if ( bestsme < INT_MAX ) bestsme = vp9_get_mvpred_var ( x , & tmp_mv -> as_mv , & ref_mv , & cpi -> fn_ptr [ bsize ] , 1 ) ; } else if ( cpi -> sf . search_method == BIGDIA ) { bestsme = vp9_bigdia_search ( x , & mvp_full , step_param , sadpb , 1 , & cpi -> fn_ptr [ bsize ] , 1 , & ref_mv , & tmp_mv -> as_mv ) ; if ( bestsme < INT_MAX ) bestsme = vp9_get_mvpred_var ( x , & tmp_mv -> as_mv , & ref_mv , & cpi -> fn_ptr [ bsize ] , 1 ) ; } else { bestsme = vp9_full_pixel_diamond ( cpi , x , & mvp_full , step_param , sadpb , further_steps , 1 , & cpi -> fn_ptr [ bsize ] , & ref_mv , & tmp_mv -> as_mv ) ; } x -> mv_col_min = tmp_col_min ; x -> mv_col_max = tmp_col_max ; x -> mv_row_min = tmp_row_min ; x -> mv_row_max = tmp_row_max ; if ( bestsme < INT_MAX ) { int dis ; cpi -> find_fractional_mv_step ( x , & tmp_mv -> as_mv , & ref_mv , cm -> allow_high_precision_mv , x -> errorperbit , & cpi -> fn_ptr [ bsize ] , cpi -> sf . subpel_force_stop , cpi -> sf . subpel_iters_per_step , x -> nmvjointcost , x -> mvcost , <S2SV_StartBug> & dis , & x -> pred_sse [ ref ] ) ; <S2SV_EndBug> } * rate_mv = vp9_mv_bit_cost ( & tmp_mv -> as_mv , & ref_mv , x -> nmvjointcost , x -> mvcost , MV_COST_WEIGHT ) ; <S2SV_StartBug> if ( cpi -> sf . adaptive_motion_search && cpi -> common . show_frame ) <S2SV_EndBug> <S2SV_StartBug> x -> pred_mv [ ref ] . as_int = tmp_mv -> as_int ; <S2SV_EndBug> if ( scaled_ref_frame ) { int i ; for ( i = 0 ; i < MAX_MB_PLANE ; i ++ ) xd -> plane [ i ] . pre [ 0 ] = backup_yv12 [ i ] ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * x , <S2SV_ModEnd> BLOCK_SIZE bsize , <S2SV_ModStart> -> e_mbd ; const <S2SV_ModStart> { { 0 , 0 <S2SV_ModStart> INT_MAX ; int <S2SV_ModEnd> step_param ; int <S2SV_ModStart> MV ref_mv = x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> x -> mv_row_max ; int cost_list [ 5 ] <S2SV_ModStart> 0 ] = x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> 1 ] = x -> mbmi_ext <S2SV_ModEnd> -> ref_mvs [ <S2SV_ModStart> [ ref ] <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> sf . mv . auto_mv_step_size && cm -> <S2SV_ModEnd> show_frame ) { <S2SV_ModStart> ( vp9_init_search_range ( <S2SV_ModEnd> x -> max_mv_context <S2SV_ModStart> -> mv_step_param ) / 2 <S2SV_ModEnd> ; } else <S2SV_ModStart> bsize < BLOCK_64X64 <S2SV_ModEnd> ) { int <S2SV_ModStart> 2 * ( b_width_log2_lookup [ BLOCK_64X64 ] <S2SV_ModEnd> - MIN ( <S2SV_ModStart> - MIN ( b_height_log2_lookup [ bsize ] , b_width_log2_lookup [ bsize ] <S2SV_ModEnd> ) ) ; <S2SV_ModStart> [ bsize ] <S2SV_ModEnd> ; int tlevel <S2SV_ModStart> += 2 ; if ( cpi -> oxcf . resize_mode != RESIZE_DYNAMIC ) { int i ; <S2SV_ModStart> <= ALTREF_FRAME && cm -> <S2SV_ModEnd> show_frame ; ++ <S2SV_ModStart> ref ] . row = 0 ; x -> pred_mv [ ref ] . col <S2SV_ModEnd> = 0 ; <S2SV_ModStart> < MAX_MB_PLANE ; ++ i <S2SV_ModEnd> ) xd -> <S2SV_ModStart> } return ; } <S2SV_ModStart> >>= 3 ; bestsme = vp9_full_pixel_search ( cpi , x , bsize , & mvp_full , step_param , sadpb , cond_cost_list ( cpi , cost_list ) , & ref_mv , & tmp_mv -> as_mv , INT_MAX , 1 ) ; x -> mv_col_min = tmp_col_min ; x -> mv_col_max = tmp_col_max ; x -> mv_row_min = tmp_row_min ; x -> mv_row_max = tmp_row_max <S2SV_ModEnd> ; if ( <S2SV_ModStart> < INT_MAX ) { int dis ; cpi -> find_fractional_mv_step <S2SV_ModEnd> ( x , <S2SV_ModStart> & ref_mv , cm -> allow_high_precision_mv , x -> errorperbit , <S2SV_ModStart> bsize ] , <S2SV_ModEnd> cpi -> sf <S2SV_ModStart> -> sf . mv . subpel_force_stop , <S2SV_ModEnd> cpi -> sf <S2SV_ModStart> -> sf . mv . subpel_iters_per_step , cond_cost_list ( cpi , cost_list ) , x -> nmvjointcost , x -> mvcost , & dis <S2SV_ModEnd> , & x <S2SV_ModStart> [ ref ] , NULL , 0 , 0 <S2SV_ModStart> sf . adaptive_motion_search <S2SV_ModEnd> ) x -> <S2SV_ModStart> [ ref ] <S2SV_ModEnd> = tmp_mv -> <S2SV_ModStart> = tmp_mv -> as_mv <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5352\n\n```\nCWE-125 static INT AirPDcapDecryptWPABroadcastKey ( const EAPOL_RSN_KEY * pEAPKey , guint8 * decryption_key , PAIRPDCAP_SEC_ASSOCIATION sa , guint eapol_len ) { guint8 key_version ; guint8 * key_data ; guint8 * szEncryptedKey ; guint16 key_bytes_len = 0 ; guint16 key_len ; static AIRPDCAP_KEY_ITEM dummy_key ; AIRPDCAP_SEC_ASSOCIATION * tmp_sa ; key_version = AIRPDCAP_EAP_KEY_DESCR_VER ( pEAPKey -> key_information [ 1 ] ) ; if ( key_version == AIRPDCAP_WPA_KEY_VER_NOT_CCMP ) { key_bytes_len = pntoh16 ( pEAPKey -> key_length ) ; } else if ( key_version == AIRPDCAP_WPA_KEY_VER_AES_CCMP ) { key_bytes_len = pntoh16 ( pEAPKey -> key_data_len ) ; if ( key_bytes_len < 16 ) { return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } } <S2SV_StartBug> if ( key_bytes_len < GROUP_KEY_MIN_LEN || key_bytes_len > eapol_len - sizeof ( EAPOL_RSN_KEY ) ) { <S2SV_EndBug> return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } key_data = ( guint8 * ) pEAPKey + sizeof ( EAPOL_RSN_KEY ) ; szEncryptedKey = ( guint8 * ) g_memdup ( key_data , key_bytes_len ) ; DEBUG_DUMP ( \"Encrypted<S2SV_blank>Broadcast<S2SV_blank>key:\" , szEncryptedKey , key_bytes_len ) ; DEBUG_DUMP ( \"KeyIV:\" , pEAPKey -> key_iv , 16 ) ; DEBUG_DUMP ( \"decryption_key:\" , decryption_key , 16 ) ; tmp_sa = ( AIRPDCAP_SEC_ASSOCIATION * ) g_malloc ( sizeof ( AIRPDCAP_SEC_ASSOCIATION ) ) ; memcpy ( tmp_sa , sa , sizeof ( AIRPDCAP_SEC_ASSOCIATION ) ) ; sa -> next = tmp_sa ; if ( key_version == AIRPDCAP_WPA_KEY_VER_NOT_CCMP ) { guint8 new_key [ 32 ] ; guint8 dummy [ 256 ] ; rc4_state_struct rc4_state ; sa -> wpa . key_ver = ( key_bytes_len >= TKIP_GROUP_KEY_LEN ) ? AIRPDCAP_WPA_KEY_VER_NOT_CCMP : AIRPDCAP_WPA_KEY_VER_AES_CCMP ; memcpy ( new_key , pEAPKey -> key_iv , 16 ) ; memcpy ( new_key + 16 , decryption_key , 16 ) ; DEBUG_DUMP ( \"FullDecrKey:\" , new_key , 32 ) ; crypt_rc4_init ( & rc4_state , new_key , sizeof ( new_key ) ) ; crypt_rc4 ( & rc4_state , dummy , 256 ) ; crypt_rc4 ( & rc4_state , szEncryptedKey , key_bytes_len ) ; } else if ( key_version == AIRPDCAP_WPA_KEY_VER_AES_CCMP ) { guint8 key_found ; guint8 key_length ; guint16 key_index ; guint8 * decrypted_data ; decrypted_data = AES_unwrap ( decryption_key , 16 , szEncryptedKey , key_bytes_len ) ; key_found = FALSE ; key_index = 0 ; while ( key_index < ( key_bytes_len - 6 ) && ! key_found ) { guint8 rsn_id ; guint32 type ; rsn_id = decrypted_data [ key_index ] ; type = ( ( decrypted_data [ key_index + 2 ] << 24 ) + ( decrypted_data [ key_index + 3 ] << 16 ) + ( decrypted_data [ key_index + 4 ] << 8 ) + ( decrypted_data [ key_index + 5 ] ) ) ; if ( rsn_id == 0xdd && type == 0x000fac01 ) { key_found = TRUE ; } else { key_index += decrypted_data [ key_index + 1 ] + 2 ; } } if ( key_found ) { key_length = decrypted_data [ key_index + 1 ] - 6 ; if ( key_index + 8 >= key_bytes_len || key_length > key_bytes_len - key_index - 8 ) { g_free ( decrypted_data ) ; g_free ( szEncryptedKey ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } memcpy ( szEncryptedKey , decrypted_data + key_index + 8 , key_length ) ; } else { g_free ( decrypted_data ) ; g_free ( szEncryptedKey ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } if ( key_length == TKIP_GROUP_KEY_LEN ) sa -> wpa . key_ver = AIRPDCAP_WPA_KEY_VER_NOT_CCMP ; else sa -> wpa . key_ver = AIRPDCAP_WPA_KEY_VER_AES_CCMP ; g_free ( decrypted_data ) ; } key_len = ( sa -> wpa . key_ver == AIRPDCAP_WPA_KEY_VER_NOT_CCMP ) ? TKIP_GROUP_KEY_LEN : CCMP_GROUP_KEY_LEN ; if ( key_len > key_bytes_len ) { g_free ( szEncryptedKey ) ; return AIRPDCAP_RET_NO_VALID_HANDSHAKE ; } DEBUG_DUMP ( \"Broadcast<S2SV_blank>key:\" , szEncryptedKey , key_len ) ; sa -> key = & dummy_key ; sa -> validKey = TRUE ; memset ( sa -> wpa . ptk , 0 , sizeof ( sa -> wpa . ptk ) ) ; memcpy ( sa -> wpa . ptk + 32 , szEncryptedKey , key_len ) ; g_free ( szEncryptedKey ) ; return AIRPDCAP_RET_SUCCESS_HANDSHAKE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> } if ( ( <S2SV_ModStart> key_bytes_len < GROUP_KEY_MIN_LEN ) || ( eapol_len < sizeof ( EAPOL_RSN_KEY ) ) || ( <S2SV_ModEnd> key_bytes_len > eapol_len <S2SV_ModStart> sizeof ( EAPOL_RSN_KEY )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2548\n\n```\nCWE-310 static int crypto_report_one ( struct crypto_alg * alg , struct crypto_user_alg * ualg , struct sk_buff * skb ) { <S2SV_StartBug> memcpy ( & ualg -> cru_name , & alg -> cra_name , sizeof ( ualg -> cru_name ) ) ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & ualg -> cru_driver_name , & alg -> cra_driver_name , <S2SV_EndBug> sizeof ( ualg -> cru_driver_name ) ) ; <S2SV_StartBug> memcpy ( & ualg -> cru_module_name , module_name ( alg -> cra_module ) , <S2SV_EndBug> <S2SV_StartBug> CRYPTO_MAX_ALG_NAME ) ; <S2SV_EndBug> ualg -> cru_flags = alg -> cra_flags ; ualg -> cru_refcnt = atomic_read ( & alg -> cra_refcnt ) ; if ( nla_put_u32 ( skb , CRYPTOCFGA_PRIORITY_VAL , alg -> cra_priority ) ) goto nla_put_failure ; if ( alg -> cra_flags & CRYPTO_ALG_LARVAL ) { struct crypto_report_larval rl ; <S2SV_StartBug> snprintf ( rl . type , CRYPTO_MAX_ALG_NAME , \"%s\" , \"larval\" ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_LARVAL , sizeof ( struct crypto_report_larval ) , & rl ) ) goto nla_put_failure ; goto out ; } if ( alg -> cra_type && alg -> cra_type -> report ) { if ( alg -> cra_type -> report ( skb , alg ) ) goto nla_put_failure ; goto out ; } switch ( alg -> cra_flags & ( CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL ) ) { case CRYPTO_ALG_TYPE_CIPHER : if ( crypto_report_cipher ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_COMPRESS : if ( crypto_report_comp ( skb , alg ) ) goto nla_put_failure ; break ; } out : return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) { strncpy ( <S2SV_ModEnd> ualg -> cru_name <S2SV_ModStart> -> cru_name , <S2SV_ModEnd> alg -> cra_name <S2SV_ModStart> ) ) ; strncpy ( <S2SV_ModEnd> ualg -> cru_driver_name <S2SV_ModStart> -> cru_driver_name , <S2SV_ModEnd> alg -> cra_driver_name <S2SV_ModStart> ) ) ; strncpy ( <S2SV_ModEnd> ualg -> cru_module_name <S2SV_ModStart> cra_module ) , sizeof ( ualg -> cru_module_name ) ) ; ualg -> cru_type = 0 ; ualg -> cru_mask = 0 <S2SV_ModEnd> ; ualg -> <S2SV_ModStart> crypto_report_larval rl ; strncpy <S2SV_ModEnd> ( rl . <S2SV_ModStart> . type , \"larval\" , sizeof ( rl . type ) <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-13406\n\n```\nCWE-190 static int uvesafb_setcmap ( struct fb_cmap * cmap , struct fb_info * info ) { struct uvesafb_pal_entry * entries ; int shift = 16 - dac_width ; int i , err = 0 ; if ( info -> var . bits_per_pixel == 8 ) { if ( cmap -> start + cmap -> len > info -> cmap . start + info -> cmap . len || cmap -> start < info -> cmap . start ) return - EINVAL ; <S2SV_StartBug> entries = kmalloc ( sizeof ( * entries ) * cmap -> len , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! entries ) return - ENOMEM ; for ( i = 0 ; i < cmap -> len ; i ++ ) { entries [ i ] . red = cmap -> red [ i ] >> shift ; entries [ i ] . green = cmap -> green [ i ] >> shift ; entries [ i ] . blue = cmap -> blue [ i ] >> shift ; entries [ i ] . pad = 0 ; } err = uvesafb_setpalette ( entries , cmap -> len , cmap -> start , info ) ; kfree ( entries ) ; } else { for ( i = 0 ; i < cmap -> len ; i ++ ) { err |= uvesafb_setcolreg ( cmap -> start + i , cmap -> red [ i ] , cmap -> green [ i ] , cmap -> blue [ i ] , 0 , info ) ; } } return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; entries = kmalloc_array ( cmap -> len , <S2SV_ModEnd> sizeof ( * <S2SV_ModStart> * entries ) , <S2SV_ModEnd> GFP_KERNEL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6419\n\n```\nCWE-119 int lzxd_decompress ( struct lzxd_stream * lzx , off_t out_bytes ) { register unsigned int bit_buffer ; register int bits_left , i = 0 ; unsigned char * i_ptr , * i_end ; register unsigned short sym ; int match_length , length_footer , extra , verbatim_bits , bytes_todo ; int this_run , main_element , aligned_bits , j ; unsigned char * window , * runsrc , * rundest , buf [ 12 ] ; unsigned int frame_size = 0 , end_frame , match_offset , window_posn ; unsigned int R0 , R1 , R2 ; if ( ! lzx || ( out_bytes < 0 ) ) return MSPACK_ERR_ARGS ; if ( lzx -> error ) return lzx -> error ; i = lzx -> o_end - lzx -> o_ptr ; if ( ( off_t ) i > out_bytes ) i = ( int ) out_bytes ; if ( i ) { if ( lzx -> sys -> write ( lzx -> output , lzx -> o_ptr , i ) != i ) { return lzx -> error = MSPACK_ERR_WRITE ; } lzx -> o_ptr += i ; lzx -> offset += i ; out_bytes -= i ; } if ( out_bytes == 0 ) return MSPACK_ERR_OK ; RESTORE_BITS ; window = lzx -> window ; window_posn = lzx -> window_posn ; R0 = lzx -> R0 ; R1 = lzx -> R1 ; R2 = lzx -> R2 ; end_frame = ( unsigned int ) ( ( lzx -> offset + out_bytes ) / LZX_FRAME_SIZE ) + 1 ; while ( lzx -> frame < end_frame ) { if ( lzx -> reset_interval && ( ( lzx -> frame % lzx -> reset_interval ) == 0 ) ) { if ( lzx -> block_remaining ) { D ( ( \"%d<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>at<S2SV_blank>reset<S2SV_blank>interval\" , lzx -> block_remaining ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } lzxd_reset_state ( lzx ) ; R0 = lzx -> R0 ; R1 = lzx -> R1 ; R2 = lzx -> R2 ; } if ( lzx -> is_delta ) { ENSURE_BITS ( 16 ) ; REMOVE_BITS ( 16 ) ; } if ( ! lzx -> header_read ) { j = 0 ; READ_BITS ( i , 1 ) ; if ( i ) { READ_BITS ( i , 16 ) ; READ_BITS ( j , 16 ) ; } lzx -> intel_filesize = ( i << 16 ) | j ; lzx -> header_read = 1 ; } frame_size = LZX_FRAME_SIZE ; if ( lzx -> length && ( lzx -> length - lzx -> offset ) < ( off_t ) frame_size ) { frame_size = lzx -> length - lzx -> offset ; } bytes_todo = lzx -> frame_posn + frame_size - window_posn ; while ( bytes_todo > 0 ) { if ( lzx -> block_remaining == 0 ) { if ( ( lzx -> block_type == LZX_BLOCKTYPE_UNCOMPRESSED ) && ( lzx -> block_length & 1 ) ) { READ_IF_NEEDED ; i_ptr ++ ; } READ_BITS ( lzx -> block_type , 3 ) ; READ_BITS ( i , 16 ) ; READ_BITS ( j , 8 ) ; lzx -> block_remaining = lzx -> block_length = ( i << 8 ) | j ; switch ( lzx -> block_type ) { case LZX_BLOCKTYPE_ALIGNED : for ( i = 0 ; i < 8 ; i ++ ) { READ_BITS ( j , 3 ) ; lzx -> ALIGNED_len [ i ] = j ; } BUILD_TABLE ( ALIGNED ) ; case LZX_BLOCKTYPE_VERBATIM : READ_LENGTHS ( MAINTREE , 0 , 256 ) ; READ_LENGTHS ( MAINTREE , 256 , LZX_NUM_CHARS + lzx -> num_offsets ) ; BUILD_TABLE ( MAINTREE ) ; if ( lzx -> MAINTREE_len [ 0xE8 ] != 0 ) lzx -> intel_started = 1 ; READ_LENGTHS ( LENGTH , 0 , LZX_NUM_SECONDARY_LENGTHS ) ; BUILD_TABLE_MAYBE_EMPTY ( LENGTH ) ; break ; case LZX_BLOCKTYPE_UNCOMPRESSED : lzx -> intel_started = 1 ; if ( bits_left == 0 ) ENSURE_BITS ( 16 ) ; bits_left = 0 ; bit_buffer = 0 ; for ( rundest = & buf [ 0 ] , i = 0 ; i < 12 ; i ++ ) { READ_IF_NEEDED ; * rundest ++ = * i_ptr ++ ; } R0 = buf [ 0 ] | ( buf [ 1 ] << 8 ) | ( buf [ 2 ] << 16 ) | ( buf [ 3 ] << 24 ) ; R1 = buf [ 4 ] | ( buf [ 5 ] << 8 ) | ( buf [ 6 ] << 16 ) | ( buf [ 7 ] << 24 ) ; R2 = buf [ 8 ] | ( buf [ 9 ] << 8 ) | ( buf [ 10 ] << 16 ) | ( buf [ 11 ] << 24 ) ; break ; default : D ( ( \"bad<S2SV_blank>block<S2SV_blank>type\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } } this_run = lzx -> block_remaining ; if ( this_run > bytes_todo ) this_run = bytes_todo ; bytes_todo -= this_run ; lzx -> block_remaining -= this_run ; switch ( lzx -> block_type ) { case LZX_BLOCKTYPE_VERBATIM : while ( this_run > 0 ) { READ_HUFFSYM ( MAINTREE , main_element ) ; if ( main_element < LZX_NUM_CHARS ) { window [ window_posn ++ ] = main_element ; this_run -- ; } else { main_element -= LZX_NUM_CHARS ; match_length = main_element & LZX_NUM_PRIMARY_LENGTHS ; if ( match_length == LZX_NUM_PRIMARY_LENGTHS ) { if ( lzx -> LENGTH_empty ) { D ( ( \"LENGTH<S2SV_blank>symbol<S2SV_blank>needed<S2SV_blank>but<S2SV_blank>tree<S2SV_blank>is<S2SV_blank>empty\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } READ_HUFFSYM ( LENGTH , length_footer ) ; match_length += length_footer ; } match_length += LZX_MIN_MATCH ; switch ( ( match_offset = ( main_element >> 3 ) ) ) { case 0 : match_offset = R0 ; break ; case 1 : match_offset = R1 ; R1 = R0 ; R0 = match_offset ; break ; case 2 : match_offset = R2 ; R2 = R0 ; R0 = match_offset ; break ; case 3 : match_offset = 1 ; R2 = R1 ; R1 = R0 ; R0 = match_offset ; break ; default : extra = ( match_offset >= 36 ) ? 17 : extra_bits [ match_offset ] ; READ_BITS ( verbatim_bits , extra ) ; match_offset = position_base [ match_offset ] - 2 + verbatim_bits ; R2 = R1 ; R1 = R0 ; R0 = match_offset ; } if ( match_length == LZX_MAX_MATCH && lzx -> is_delta ) { int extra_len = 0 ; ENSURE_BITS ( 3 ) ; if ( PEEK_BITS ( 1 ) == 0 ) { REMOVE_BITS ( 1 ) ; READ_BITS ( extra_len , 8 ) ; } else if ( PEEK_BITS ( 2 ) == 2 ) { REMOVE_BITS ( 2 ) ; READ_BITS ( extra_len , 10 ) ; extra_len += 0x100 ; } else if ( PEEK_BITS ( 3 ) == 6 ) { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 12 ) ; extra_len += 0x500 ; } else { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 15 ) ; } match_length += extra_len ; } if ( ( window_posn + match_length ) > lzx -> window_size ) { D ( ( \"match<S2SV_blank>ran<S2SV_blank>over<S2SV_blank>window<S2SV_blank>wrap\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } rundest = & window [ window_posn ] ; i = match_length ; if ( match_offset > window_posn ) { if ( match_offset > lzx -> offset && ( match_offset - window_posn ) > lzx -> ref_data_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>LZX<S2SV_blank>stream\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } j = match_offset - window_posn ; if ( j > ( int ) lzx -> window_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>window<S2SV_blank>boundaries\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } runsrc = & window [ lzx -> window_size - j ] ; if ( j < i ) { i -= j ; while ( j -- > 0 ) * rundest ++ = * runsrc ++ ; runsrc = window ; } while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } else { runsrc = rundest - match_offset ; while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } this_run -= match_length ; window_posn += match_length ; } } break ; case LZX_BLOCKTYPE_ALIGNED : while ( this_run > 0 ) { READ_HUFFSYM ( MAINTREE , main_element ) ; if ( main_element < LZX_NUM_CHARS ) { window [ window_posn ++ ] = main_element ; this_run -- ; } else { main_element -= LZX_NUM_CHARS ; match_length = main_element & LZX_NUM_PRIMARY_LENGTHS ; if ( match_length == LZX_NUM_PRIMARY_LENGTHS ) { if ( lzx -> LENGTH_empty ) { D ( ( \"LENGTH<S2SV_blank>symbol<S2SV_blank>needed<S2SV_blank>but<S2SV_blank>tree<S2SV_blank>is<S2SV_blank>empty\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } READ_HUFFSYM ( LENGTH , length_footer ) ; match_length += length_footer ; } match_length += LZX_MIN_MATCH ; switch ( ( match_offset = ( main_element >> 3 ) ) ) { case 0 : match_offset = R0 ; break ; case 1 : match_offset = R1 ; R1 = R0 ; R0 = match_offset ; break ; case 2 : match_offset = R2 ; R2 = R0 ; R0 = match_offset ; break ; default : extra = ( match_offset >= 36 ) ? 17 : extra_bits [ match_offset ] ; match_offset = position_base [ match_offset ] - 2 ; if ( extra > 3 ) { extra -= 3 ; READ_BITS ( verbatim_bits , extra ) ; match_offset += ( verbatim_bits << 3 ) ; READ_HUFFSYM ( ALIGNED , aligned_bits ) ; match_offset += aligned_bits ; } else if ( extra == 3 ) { READ_HUFFSYM ( ALIGNED , aligned_bits ) ; match_offset += aligned_bits ; } else if ( extra > 0 ) { READ_BITS ( verbatim_bits , extra ) ; match_offset += verbatim_bits ; } else { match_offset = 1 ; } R2 = R1 ; R1 = R0 ; R0 = match_offset ; } if ( match_length == LZX_MAX_MATCH && lzx -> is_delta ) { int extra_len = 0 ; ENSURE_BITS ( 3 ) ; if ( PEEK_BITS ( 1 ) == 0 ) { REMOVE_BITS ( 1 ) ; READ_BITS ( extra_len , 8 ) ; } else if ( PEEK_BITS ( 2 ) == 2 ) { REMOVE_BITS ( 2 ) ; READ_BITS ( extra_len , 10 ) ; extra_len += 0x100 ; } else if ( PEEK_BITS ( 3 ) == 6 ) { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 12 ) ; extra_len += 0x500 ; } else { REMOVE_BITS ( 3 ) ; READ_BITS ( extra_len , 15 ) ; } match_length += extra_len ; } if ( ( window_posn + match_length ) > lzx -> window_size ) { D ( ( \"match<S2SV_blank>ran<S2SV_blank>over<S2SV_blank>window<S2SV_blank>wrap\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } rundest = & window [ window_posn ] ; i = match_length ; if ( match_offset > window_posn ) { if ( match_offset > lzx -> offset && ( match_offset - window_posn ) > lzx -> ref_data_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>LZX<S2SV_blank>stream\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } j = match_offset - window_posn ; if ( j > ( int ) lzx -> window_size ) { D ( ( \"match<S2SV_blank>offset<S2SV_blank>beyond<S2SV_blank>window<S2SV_blank>boundaries\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } runsrc = & window [ lzx -> window_size - j ] ; if ( j < i ) { i -= j ; while ( j -- > 0 ) * rundest ++ = * runsrc ++ ; runsrc = window ; } while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } else { runsrc = rundest - match_offset ; while ( i -- > 0 ) * rundest ++ = * runsrc ++ ; } this_run -= match_length ; window_posn += match_length ; } } break ; <S2SV_StartBug> case LZX_BLOCKTYPE_UNCOMPRESSED : <S2SV_EndBug> rundest = & window [ window_posn ] ; window_posn += this_run ; while ( this_run > 0 ) { if ( ( i = i_end - i_ptr ) == 0 ) { READ_IF_NEEDED ; } else { if ( i > this_run ) i = this_run ; lzx -> sys -> copy ( i_ptr , rundest , ( size_t ) i ) ; rundest += i ; i_ptr += i ; this_run -= i ; } } break ; default : return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( this_run < 0 ) { if ( ( unsigned int ) ( - this_run ) > lzx -> block_remaining ) { D ( ( \"overrun<S2SV_blank>went<S2SV_blank>past<S2SV_blank>end<S2SV_blank>of<S2SV_blank>block<S2SV_blank>by<S2SV_blank>%d<S2SV_blank>(%d<S2SV_blank>remaining)\" , - this_run , lzx -> block_remaining ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } lzx -> block_remaining -= - this_run ; } } if ( ( window_posn - lzx -> frame_posn ) != frame_size ) { D ( ( \"decode<S2SV_blank>beyond<S2SV_blank>output<S2SV_blank>frame<S2SV_blank>limits!<S2SV_blank>%d<S2SV_blank>!=<S2SV_blank>%d\" , window_posn - lzx -> frame_posn , frame_size ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( bits_left > 0 ) ENSURE_BITS ( 16 ) ; if ( bits_left & 15 ) REMOVE_BITS ( bits_left & 15 ) ; if ( lzx -> o_ptr != lzx -> o_end ) { D ( ( \"%ld<S2SV_blank>avail<S2SV_blank>bytes,<S2SV_blank>new<S2SV_blank>%d<S2SV_blank>frame\" , ( long ) ( lzx -> o_end - lzx -> o_ptr ) , frame_size ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } if ( lzx -> intel_started && lzx -> intel_filesize && ( lzx -> frame <= 32768 ) && ( frame_size > 10 ) ) { unsigned char * data = & lzx -> e8_buf [ 0 ] ; unsigned char * dataend = & lzx -> e8_buf [ frame_size - 10 ] ; signed int curpos = lzx -> intel_curpos ; signed int filesize = lzx -> intel_filesize ; signed int abs_off , rel_off ; lzx -> o_ptr = data ; lzx -> sys -> copy ( & lzx -> window [ lzx -> frame_posn ] , data , frame_size ) ; while ( data < dataend ) { if ( * data ++ != 0xE8 ) { curpos ++ ; continue ; } abs_off = data [ 0 ] | ( data [ 1 ] << 8 ) | ( data [ 2 ] << 16 ) | ( data [ 3 ] << 24 ) ; if ( ( abs_off >= - curpos ) && ( abs_off < filesize ) ) { rel_off = ( abs_off >= 0 ) ? abs_off - curpos : abs_off + filesize ; data [ 0 ] = ( unsigned char ) rel_off ; data [ 1 ] = ( unsigned char ) ( rel_off >> 8 ) ; data [ 2 ] = ( unsigned char ) ( rel_off >> 16 ) ; data [ 3 ] = ( unsigned char ) ( rel_off >> 24 ) ; } data += 4 ; curpos += 5 ; } lzx -> intel_curpos += frame_size ; } else { lzx -> o_ptr = & lzx -> window [ lzx -> frame_posn ] ; if ( lzx -> intel_filesize ) lzx -> intel_curpos += frame_size ; } lzx -> o_end = & lzx -> o_ptr [ frame_size ] ; i = ( out_bytes < ( off_t ) frame_size ) ? ( unsigned int ) out_bytes : frame_size ; if ( lzx -> sys -> write ( lzx -> output , lzx -> o_ptr , i ) != i ) { return lzx -> error = MSPACK_ERR_WRITE ; } lzx -> o_ptr += i ; lzx -> offset += i ; out_bytes -= i ; lzx -> frame_posn += frame_size ; lzx -> frame ++ ; if ( window_posn == lzx -> window_size ) window_posn = 0 ; if ( lzx -> frame_posn == lzx -> window_size ) lzx -> frame_posn = 0 ; } if ( out_bytes ) { D ( ( \"bytes<S2SV_blank>left<S2SV_blank>to<S2SV_blank>output\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; } STORE_BITS ; lzx -> window_posn = window_posn ; lzx -> R0 = R0 ; lzx -> R1 = R1 ; lzx -> R2 = R2 ; return MSPACK_ERR_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case LZX_BLOCKTYPE_UNCOMPRESSED : if ( window_posn + this_run > lzx -> window_size ) { D ( ( \"match<S2SV_blank>ran<S2SV_blank>over<S2SV_blank>window<S2SV_blank>boundary\" ) ) return lzx -> error = MSPACK_ERR_DECRUNCH ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static vpx_codec_err_t ctrl_set_previewpp ( vpx_codec_alg_priv_t * ctx , <S2SV_StartBug> int ctr_id , va_list args ) { <S2SV_EndBug> # if CONFIG_VP9_POSTPROC <S2SV_StartBug> vp8_postproc_cfg_t * config = va_arg ( args , vp8_postproc_cfg_t * ) ; <S2SV_EndBug> ( void ) ctr_id ; if ( config != NULL ) { ctx -> preview_ppcfg = * config ; return VPX_CODEC_OK ; } else { return VPX_CODEC_INVALID_PARAM ; } # else ( void ) ctx ; <S2SV_StartBug> ( void ) ctr_id ; <S2SV_EndBug> ( void ) args ; return VPX_CODEC_INCAPABLE ; # endif }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * ctx , <S2SV_ModEnd> va_list args ) <S2SV_ModStart> vp8_postproc_cfg_t * ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> ( void ) <S2SV_ModEnd> args ; return\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_reset_segment_features ( struct segmentation * seg ) { seg -> enabled = 0 ; seg -> update_map = 0 ; seg -> update_data = 0 ; <S2SV_StartBug> vpx_memset ( seg -> tree_probs , 255 , sizeof ( seg -> tree_probs ) ) ; <S2SV_EndBug> vp9_clearall_segfeatures ( seg ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; memset <S2SV_ModEnd> ( seg ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8887\n\n```\nCWE-476 jas_image_t * jp2_decode ( jas_stream_t * in , char * optstr ) { jp2_box_t * box ; int found ; jas_image_t * image ; jp2_dec_t * dec ; bool samedtype ; int dtype ; unsigned int i ; jp2_cmap_t * cmapd ; jp2_pclr_t * pclrd ; jp2_cdef_t * cdefd ; unsigned int channo ; int newcmptno ; int_fast32_t * lutents ; # if 0 jp2_cdefchan_t * cdefent ; int cmptno ; # endif jp2_cmapent_t * cmapent ; jas_icchdr_t icchdr ; jas_iccprof_t * iccprof ; dec = 0 ; box = 0 ; image = 0 ; if ( ! ( dec = jp2_dec_create ( ) ) ) { goto error ; } if ( ! ( box = jp2_box_get ( in ) ) ) { jas_eprintf ( \"error:<S2SV_blank>cannot<S2SV_blank>get<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( box -> type != JP2_BOX_JP ) { jas_eprintf ( \"error:<S2SV_blank>expecting<S2SV_blank>signature<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( box -> data . jp . magic != JP2_JP_MAGIC ) { jas_eprintf ( \"incorrect<S2SV_blank>magic<S2SV_blank>number\\\\n\" ) ; goto error ; } jp2_box_destroy ( box ) ; box = 0 ; if ( ! ( box = jp2_box_get ( in ) ) ) { goto error ; } if ( box -> type != JP2_BOX_FTYP ) { jas_eprintf ( \"expecting<S2SV_blank>file<S2SV_blank>type<S2SV_blank>box\\\\n\" ) ; goto error ; } jp2_box_destroy ( box ) ; box = 0 ; found = 0 ; while ( ( box = jp2_box_get ( in ) ) ) { if ( jas_getdbglevel ( ) >= 1 ) { <S2SV_StartBug> jas_eprintf ( \"box<S2SV_blank>type<S2SV_blank>%s\\\\n\" , box -> info -> name ) ; <S2SV_EndBug> } switch ( box -> type ) { case JP2_BOX_JP2C : found = 1 ; break ; case JP2_BOX_IHDR : if ( ! dec -> ihdr ) { dec -> ihdr = box ; box = 0 ; } break ; case JP2_BOX_BPCC : if ( ! dec -> bpcc ) { dec -> bpcc = box ; box = 0 ; } break ; case JP2_BOX_CDEF : if ( ! dec -> cdef ) { dec -> cdef = box ; box = 0 ; } break ; case JP2_BOX_PCLR : if ( ! dec -> pclr ) { dec -> pclr = box ; box = 0 ; } break ; case JP2_BOX_CMAP : if ( ! dec -> cmap ) { dec -> cmap = box ; box = 0 ; } break ; case JP2_BOX_COLR : if ( ! dec -> colr ) { dec -> colr = box ; box = 0 ; } break ; } if ( box ) { jp2_box_destroy ( box ) ; box = 0 ; } if ( found ) { break ; } } if ( ! found ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>code<S2SV_blank>stream<S2SV_blank>found\\\\n\" ) ; goto error ; } if ( ! ( dec -> image = jpc_decode ( in , optstr ) ) ) { jas_eprintf ( \"error:<S2SV_blank>cannot<S2SV_blank>decode<S2SV_blank>code<S2SV_blank>stream\\\\n\" ) ; goto error ; } if ( ! dec -> ihdr ) { jas_eprintf ( \"error:<S2SV_blank>missing<S2SV_blank>IHDR<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( dec -> ihdr -> data . ihdr . numcmpts != JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ) { jas_eprintf ( \"warning:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>mismatch\\\\n\" ) ; } if ( ! jas_image_numcmpts ( dec -> image ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>components\\\\n\" ) ; goto error ; } samedtype = true ; dtype = jas_image_cmptdtype ( dec -> image , 0 ) ; for ( i = 1 ; i < JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ; ++ i ) { if ( jas_image_cmptdtype ( dec -> image , i ) != dtype ) { samedtype = false ; break ; } } if ( ( samedtype && dec -> ihdr -> data . ihdr . bpc != JP2_DTYPETOBPC ( dtype ) ) || ( ! samedtype && dec -> ihdr -> data . ihdr . bpc != JP2_IHDR_BPCNULL ) ) { jas_eprintf ( \"warning:<S2SV_blank>component<S2SV_blank>data<S2SV_blank>type<S2SV_blank>mismatch\\\\n\" ) ; } if ( dec -> ihdr -> data . ihdr . comptype != JP2_IHDR_COMPTYPE ) { jas_eprintf ( \"error:<S2SV_blank>unsupported<S2SV_blank>compression<S2SV_blank>type\\\\n\" ) ; goto error ; } if ( dec -> bpcc ) { if ( dec -> bpcc -> data . bpcc . numcmpts != JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ) { jas_eprintf ( \"warning:<S2SV_blank>number<S2SV_blank>of<S2SV_blank>components<S2SV_blank>mismatch\\\\n\" ) ; } if ( ! samedtype ) { for ( i = 0 ; i < JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ; ++ i ) { if ( jas_image_cmptdtype ( dec -> image , i ) != JP2_BPCTODTYPE ( dec -> bpcc -> data . bpcc . bpcs [ i ] ) ) { jas_eprintf ( \"warning:<S2SV_blank>component<S2SV_blank>data<S2SV_blank>type<S2SV_blank>mismatch\\\\n\" ) ; } } } else { jas_eprintf ( \"warning:<S2SV_blank>superfluous<S2SV_blank>BPCC<S2SV_blank>box\\\\n\" ) ; } } if ( ! dec -> colr ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>COLR<S2SV_blank>box\\\\n\" ) ; goto error ; } switch ( dec -> colr -> data . colr . method ) { case JP2_COLR_ENUM : jas_image_setclrspc ( dec -> image , jp2_getcs ( & dec -> colr -> data . colr ) ) ; break ; case JP2_COLR_ICC : iccprof = jas_iccprof_createfrombuf ( dec -> colr -> data . colr . iccp , dec -> colr -> data . colr . iccplen ) ; if ( ! iccprof ) { jas_eprintf ( \"error:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>ICC<S2SV_blank>profile\\\\n\" ) ; goto error ; } jas_iccprof_gethdr ( iccprof , & icchdr ) ; jas_eprintf ( \"ICC<S2SV_blank>Profile<S2SV_blank>CS<S2SV_blank>%08x\\\\n\" , icchdr . colorspc ) ; jas_image_setclrspc ( dec -> image , fromiccpcs ( icchdr . colorspc ) ) ; dec -> image -> cmprof_ = jas_cmprof_createfromiccprof ( iccprof ) ; assert ( dec -> image -> cmprof_ ) ; jas_iccprof_destroy ( iccprof ) ; break ; } if ( dec -> cmap && ! dec -> pclr ) { jas_eprintf ( \"warning:<S2SV_blank>missing<S2SV_blank>PCLR<S2SV_blank>box<S2SV_blank>or<S2SV_blank>superfluous<S2SV_blank>CMAP<S2SV_blank>box\\\\n\" ) ; jp2_box_destroy ( dec -> cmap ) ; dec -> cmap = 0 ; } if ( ! dec -> cmap && dec -> pclr ) { jas_eprintf ( \"warning:<S2SV_blank>missing<S2SV_blank>CMAP<S2SV_blank>box<S2SV_blank>or<S2SV_blank>superfluous<S2SV_blank>PCLR<S2SV_blank>box\\\\n\" ) ; jp2_box_destroy ( dec -> pclr ) ; dec -> pclr = 0 ; } dec -> numchans = dec -> cmap ? dec -> cmap -> data . cmap . numchans : JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ; if ( dec -> cmap ) { for ( i = 0 ; i < dec -> numchans ; ++ i ) { if ( dec -> cmap -> data . cmap . ents [ i ] . cmptno >= JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>component<S2SV_blank>number<S2SV_blank>in<S2SV_blank>CMAP<S2SV_blank>box\\\\n\" ) ; goto error ; } if ( dec -> cmap -> data . cmap . ents [ i ] . pcol >= dec -> pclr -> data . pclr . numchans ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>CMAP<S2SV_blank>LUT<S2SV_blank>index\\\\n\" ) ; goto error ; } } } if ( ! ( dec -> chantocmptlut = jas_alloc2 ( dec -> numchans , sizeof ( uint_fast16_t ) ) ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>memory\\\\n\" ) ; goto error ; } if ( ! dec -> cmap ) { for ( i = 0 ; i < dec -> numchans ; ++ i ) { dec -> chantocmptlut [ i ] = i ; } } else { cmapd = & dec -> cmap -> data . cmap ; pclrd = & dec -> pclr -> data . pclr ; cdefd = & dec -> cdef -> data . cdef ; for ( channo = 0 ; channo < cmapd -> numchans ; ++ channo ) { cmapent = & cmapd -> ents [ channo ] ; if ( cmapent -> map == JP2_CMAP_DIRECT ) { dec -> chantocmptlut [ channo ] = channo ; } else if ( cmapent -> map == JP2_CMAP_PALETTE ) { lutents = jas_alloc2 ( pclrd -> numlutents , sizeof ( int_fast32_t ) ) ; for ( i = 0 ; i < pclrd -> numlutents ; ++ i ) { lutents [ i ] = pclrd -> lutdata [ cmapent -> pcol + i * pclrd -> numchans ] ; } newcmptno = jas_image_numcmpts ( dec -> image ) ; jas_image_depalettize ( dec -> image , cmapent -> cmptno , pclrd -> numlutents , lutents , JP2_BPCTODTYPE ( pclrd -> bpc [ cmapent -> pcol ] ) , newcmptno ) ; dec -> chantocmptlut [ channo ] = newcmptno ; jas_free ( lutents ) ; # if 0 if ( dec -> cdef ) { cdefent = jp2_cdef_lookup ( cdefd , channo ) ; if ( ! cdefent ) { abort ( ) ; } jas_image_setcmpttype ( dec -> image , newcmptno , jp2_getct ( jas_image_clrspc ( dec -> image ) , cdefent -> type , cdefent -> assoc ) ) ; } else { jas_image_setcmpttype ( dec -> image , newcmptno , jp2_getct ( jas_image_clrspc ( dec -> image ) , 0 , channo + 1 ) ) ; } # endif } } } for ( i = 0 ; i < JAS_CAST ( uint , jas_image_numcmpts ( dec -> image ) ) ; ++ i ) { jas_image_setcmpttype ( dec -> image , i , JAS_IMAGE_CT_UNKNOWN ) ; } if ( dec -> cdef ) { for ( i = 0 ; i < dec -> numchans ; ++ i ) { if ( dec -> cdef -> data . cdef . ents [ i ] . channo >= dec -> numchans ) { jas_eprintf ( \"error:<S2SV_blank>invalid<S2SV_blank>channel<S2SV_blank>number<S2SV_blank>in<S2SV_blank>CDEF<S2SV_blank>box\\\\n\" ) ; goto error ; } jas_image_setcmpttype ( dec -> image , dec -> chantocmptlut [ dec -> cdef -> data . cdef . ents [ i ] . channo ] , jp2_getct ( jas_image_clrspc ( dec -> image ) , dec -> cdef -> data . cdef . ents [ i ] . type , dec -> cdef -> data . cdef . ents [ i ] . assoc ) ) ; } } else { for ( i = 0 ; i < dec -> numchans ; ++ i ) { jas_image_setcmpttype ( dec -> image , dec -> chantocmptlut [ i ] , jp2_getct ( jas_image_clrspc ( dec -> image ) , 0 , i + 1 ) ) ; } } for ( i = jas_image_numcmpts ( dec -> image ) ; i > 0 ; -- i ) { if ( jas_image_cmpttype ( dec -> image , i - 1 ) == JAS_IMAGE_CT_UNKNOWN ) { jas_image_delcmpt ( dec -> image , i - 1 ) ; } } if ( ! jas_image_numcmpts ( dec -> image ) ) { jas_eprintf ( \"error:<S2SV_blank>no<S2SV_blank>components\\\\n\" ) ; goto error ; } # if 0 jas_eprintf ( \"no<S2SV_blank>of<S2SV_blank>components<S2SV_blank>is<S2SV_blank>%d\\\\n\" , jas_image_numcmpts ( dec -> image ) ) ; # endif image = dec -> image ; dec -> image = 0 ; jp2_dec_destroy ( dec ) ; return image ; error : if ( box ) { jp2_box_destroy ( box ) ; } if ( dec ) { jp2_dec_destroy ( dec ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { jas_eprintf ( \"got<S2SV_blank>box<S2SV_blank>type<S2SV_blank>%s\\\\n\" <S2SV_ModEnd> , box ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-9888\n\n```\nCWE-264 void * arm_dma_alloc ( struct device * dev , size_t size , dma_addr_t * handle , gfp_t gfp , struct dma_attrs * attrs ) { <S2SV_StartBug> pgprot_t prot = __get_dma_pgprot ( attrs , pgprot_kernel ) ; <S2SV_EndBug> void * memory ; if ( dma_alloc_from_coherent ( dev , size , handle , & memory ) ) return memory ; return __dma_alloc ( dev , size , handle , gfp , prot , false , __builtin_return_address ( 0 ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( attrs , PAGE_KERNEL <S2SV_ModEnd> ) ; void\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7446\n\n```\nCWE-000 static int unix_dgram_sendmsg ( struct socket * sock , struct msghdr * msg , size_t len ) { struct sock * sk = sock -> sk ; struct net * net = sock_net ( sk ) ; struct unix_sock * u = unix_sk ( sk ) ; DECLARE_SOCKADDR ( struct sockaddr_un * , sunaddr , msg -> msg_name ) ; struct sock * other = NULL ; int namelen = 0 ; int err ; unsigned int hash ; struct sk_buff * skb ; long timeo ; struct scm_cookie scm ; int max_level ; int data_len = 0 ; <S2SV_StartBug> wait_for_unix_gc ( ) ; <S2SV_EndBug> err = scm_send ( sock , msg , & scm , false ) ; if ( err < 0 ) return err ; err = - EOPNOTSUPP ; if ( msg -> msg_flags & MSG_OOB ) goto out ; if ( msg -> msg_namelen ) { err = unix_mkname ( sunaddr , msg -> msg_namelen , & hash ) ; if ( err < 0 ) goto out ; namelen = err ; } else { sunaddr = NULL ; err = - ENOTCONN ; other = unix_peer_get ( sk ) ; if ( ! other ) goto out ; } if ( test_bit ( SOCK_PASSCRED , & sock -> flags ) && ! u -> addr && ( err = unix_autobind ( sock ) ) != 0 ) goto out ; err = - EMSGSIZE ; if ( len > sk -> sk_sndbuf - 32 ) goto out ; if ( len > SKB_MAX_ALLOC ) { data_len = min_t ( size_t , len - SKB_MAX_ALLOC , MAX_SKB_FRAGS * PAGE_SIZE ) ; data_len = PAGE_ALIGN ( data_len ) ; BUILD_BUG_ON ( SKB_MAX_ALLOC < PAGE_SIZE ) ; } skb = sock_alloc_send_pskb ( sk , len - data_len , data_len , msg -> msg_flags & MSG_DONTWAIT , & err , PAGE_ALLOC_COSTLY_ORDER ) ; if ( skb == NULL ) goto out ; err = unix_scm_to_skb ( & scm , skb , true ) ; if ( err < 0 ) goto out_free ; max_level = err + 1 ; skb_put ( skb , len - data_len ) ; skb -> data_len = data_len ; skb -> len = len ; err = skb_copy_datagram_from_iter ( skb , 0 , & msg -> msg_iter , len ) ; if ( err ) goto out_free ; timeo = sock_sndtimeo ( sk , msg -> msg_flags & MSG_DONTWAIT ) ; restart : if ( ! other ) { err = - ECONNRESET ; if ( sunaddr == NULL ) goto out_free ; other = unix_find_other ( net , sunaddr , namelen , sk -> sk_type , hash , & err ) ; if ( other == NULL ) goto out_free ; } if ( sk_filter ( other , skb ) < 0 ) { err = len ; goto out_free ; } <S2SV_StartBug> unix_state_lock ( other ) ; <S2SV_EndBug> err = - EPERM ; if ( ! unix_may_send ( sk , other ) ) goto out_unlock ; <S2SV_StartBug> if ( sock_flag ( other , SOCK_DEAD ) ) { <S2SV_EndBug> unix_state_unlock ( other ) ; sock_put ( other ) ; <S2SV_StartBug> err = 0 ; <S2SV_EndBug> <S2SV_StartBug> unix_state_lock ( sk ) ; <S2SV_EndBug> if ( unix_peer ( sk ) == other ) { <S2SV_StartBug> unix_peer ( sk ) = NULL ; <S2SV_EndBug> unix_state_unlock ( sk ) ; unix_dgram_disconnected ( sk , other ) ; sock_put ( other ) ; err = - ECONNREFUSED ; } else { unix_state_unlock ( sk ) ; } other = NULL ; if ( err ) goto out_free ; goto restart ; } err = - EPIPE ; if ( other -> sk_shutdown & RCV_SHUTDOWN ) goto out_unlock ; if ( sk -> sk_type != SOCK_SEQPACKET ) { err = security_unix_may_send ( sk -> sk_socket , other -> sk_socket ) ; if ( err ) goto out_unlock ; } <S2SV_StartBug> if ( unix_peer ( other ) != sk && unix_recvq_full ( other ) ) { <S2SV_EndBug> <S2SV_StartBug> if ( ! timeo ) { <S2SV_EndBug> err = - EAGAIN ; <S2SV_StartBug> goto out_unlock ; <S2SV_EndBug> } <S2SV_StartBug> timeo = unix_wait_for_peer ( other , timeo ) ; <S2SV_EndBug> err = sock_intr_errno ( timeo ) ; if ( signal_pending ( current ) ) goto out_free ; goto restart ; } if ( sock_flag ( other , SOCK_RCVTSTAMP ) ) __net_timestamp ( skb ) ; maybe_add_creds ( skb , sock , other ) ; skb_queue_tail ( & other -> sk_receive_queue , skb ) ; if ( max_level > unix_sk ( other ) -> recursion_level ) unix_sk ( other ) -> recursion_level = max_level ; unix_state_unlock ( other ) ; other -> sk_data_ready ( other ) ; sock_put ( other ) ; scm_destroy ( & scm ) ; return len ; out_unlock : <S2SV_StartBug> unix_state_unlock ( other ) ; <S2SV_EndBug> out_free : kfree_skb ( skb ) ; out : if ( other ) sock_put ( other ) ; scm_destroy ( & scm ) ; return err ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; int sk_locked ; <S2SV_ModStart> out_free ; } sk_locked = 0 ; <S2SV_ModStart> other ) ; restart_locked : <S2SV_ModStart> ; if ( unlikely ( <S2SV_ModStart> SOCK_DEAD ) ) ) <S2SV_ModStart> other ) ; if ( ! sk_locked ) unix_state_lock ( sk ) ; <S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( unix_peer <S2SV_ModStart> ) = NULL ; unix_dgram_peer_wake_disconnect_wakeup ( sk , other ) <S2SV_ModStart> } if ( unlikely ( <S2SV_ModStart> other ) ) ) { if ( timeo ) { timeo = unix_wait_for_peer ( other , timeo ) ; err = sock_intr_errno ( timeo ) ; if ( signal_pending ( current ) ) goto out_free ; goto restart ; } <S2SV_ModEnd> if ( ! <S2SV_ModStart> if ( ! sk_locked ) { unix_state_unlock ( other ) ; unix_state_double_lock ( sk , other ) ; } if ( unix_peer ( sk ) != other || unix_dgram_peer_wake_me ( sk , other ) <S2SV_ModEnd> ) { err <S2SV_ModStart> - EAGAIN ; sk_locked = 1 ; <S2SV_ModStart> out_unlock ; } if ( ! sk_locked ) { sk_locked = 1 ; goto restart_locked ; } } if ( unlikely ( sk_locked ) ) unix_state_unlock ( sk ) ; <S2SV_ModEnd> if ( sock_flag <S2SV_ModStart> ; out_unlock : if ( sk_locked ) unix_state_unlock ( sk ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3760\n\n```\nCWE-20 static future_t * init ( void ) { pthread_mutex_init ( & lock , NULL ) ; config = config_new ( CONFIG_FILE_PATH ) ; if ( ! config ) { LOG_WARN ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>load<S2SV_blank>config<S2SV_blank>file;<S2SV_blank>attempting<S2SV_blank>to<S2SV_blank>transcode<S2SV_blank>legacy<S2SV_blank>file.\" , __func__ ) ; config = btif_config_transcode ( LEGACY_CONFIG_FILE_PATH ) ; if ( ! config ) { LOG_WARN ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>transcode<S2SV_blank>legacy<S2SV_blank>file,<S2SV_blank>starting<S2SV_blank>unconfigured.\" , __func__ ) ; config = config_new_empty ( ) ; if ( ! config ) { LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>allocate<S2SV_blank>a<S2SV_blank>config<S2SV_blank>object.\" , __func__ ) ; goto error ; } } if ( config_save ( config , CONFIG_FILE_PATH ) ) unlink ( LEGACY_CONFIG_FILE_PATH ) ; } btif_config_remove_unpaired ( config ) ; <S2SV_StartBug> alarm_timer = alarm_new ( ) ; <S2SV_EndBug> if ( ! alarm_timer ) { LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>create<S2SV_blank>alarm.\" , __func__ ) ; goto error ; } return future_new_immediate ( FUTURE_SUCCESS ) ; error : ; alarm_free ( alarm_timer ) ; config_free ( config ) ; pthread_mutex_destroy ( & lock ) ; alarm_timer = NULL ; config = NULL ; return future_new_immediate ( FUTURE_FAIL ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> config ) ; if ( ! is_restricted_mode ( ) ) btif_config_remove_restricted ( config ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-0063\n\n```\nCWE-119 int main ( void ) { <S2SV_StartBug> # line 52 \"dt_test2.pgc\" <S2SV_EndBug> date date1 ; <S2SV_StartBug> # line 53 \"dt_test2.pgc\" <S2SV_EndBug> timestamp ts1 , ts2 ; <S2SV_StartBug> # line 54 \"dt_test2.pgc\" <S2SV_EndBug> char * text ; <S2SV_StartBug> # line 55 \"dt_test2.pgc\" <S2SV_EndBug> interval * i1 ; <S2SV_StartBug> # line 56 \"dt_test2.pgc\" <S2SV_EndBug> date * dc ; <S2SV_StartBug> # line 57 \"dt_test2.pgc\" <S2SV_EndBug> int i , j ; char * endptr ; ECPGdebug ( 1 , stderr ) ; ts1 = PGTYPEStimestamp_from_asc ( \"2003-12-04<S2SV_blank>17:34:29\" , NULL ) ; text = PGTYPEStimestamp_to_asc ( ts1 ) ; printf ( \"timestamp:<S2SV_blank>%s\\\\n\" , text ) ; free ( text ) ; date1 = PGTYPESdate_from_timestamp ( ts1 ) ; dc = PGTYPESdate_new ( ) ; * dc = date1 ; text = PGTYPESdate_to_asc ( * dc ) ; printf ( \"Date<S2SV_blank>of<S2SV_blank>timestamp:<S2SV_blank>%s\\\\n\" , text ) ; free ( text ) ; PGTYPESdate_free ( dc ) ; for ( i = 0 ; dates [ i ] ; i ++ ) { bool err = false ; date1 = PGTYPESdate_from_asc ( dates [ i ] , & endptr ) ; if ( date1 == INT_MIN ) { err = true ; } text = PGTYPESdate_to_asc ( date1 ) ; printf ( \"Date[%d]:<S2SV_blank>%s<S2SV_blank>(%c<S2SV_blank>-<S2SV_blank>%c)\\\\n\" , i , err ? \"-\" : text , endptr ? 'N' : 'Y' , err ? 'T' : 'F' ) ; free ( text ) ; if ( ! err ) { for ( j = 0 ; times [ j ] ; j ++ ) { int length = strlen ( dates [ i ] ) + 1 + strlen ( times [ j ] ) + 1 ; char * t = malloc ( length ) ; sprintf ( t , \"%s<S2SV_blank>%s\" , dates [ i ] , times [ j ] ) ; ts1 = PGTYPEStimestamp_from_asc ( t , NULL ) ; text = PGTYPEStimestamp_to_asc ( ts1 ) ; if ( i != 19 || j != 3 ) printf ( \"TS[%d,%d]:<S2SV_blank>%s\\\\n\" , i , j , errno ? \"-\" : text ) ; free ( text ) ; free ( t ) ; } } } ts1 = PGTYPEStimestamp_from_asc ( \"2004-04-04<S2SV_blank>23:23:23\" , NULL ) ; for ( i = 0 ; intervals [ i ] ; i ++ ) { interval * ic ; i1 = PGTYPESinterval_from_asc ( intervals [ i ] , & endptr ) ; if ( * endptr ) printf ( \"endptr<S2SV_blank>set<S2SV_blank>to<S2SV_blank>%s\\\\n\" , endptr ) ; if ( ! i1 ) { printf ( \"Error<S2SV_blank>parsing<S2SV_blank>interval<S2SV_blank>%d\\\\n\" , i ) ; continue ; } j = PGTYPEStimestamp_add_interval ( & ts1 , i1 , & ts2 ) ; if ( j < 0 ) continue ; text = PGTYPESinterval_to_asc ( i1 ) ; printf ( \"interval[%d]:<S2SV_blank>%s\\\\n\" , i , text ? text : \"-\" ) ; free ( text ) ; ic = PGTYPESinterval_new ( ) ; PGTYPESinterval_copy ( i1 , ic ) ; text = PGTYPESinterval_to_asc ( i1 ) ; printf ( \"interval_copy[%d]:<S2SV_blank>%s\\\\n\" , i , text ? text : \"-\" ) ; free ( text ) ; PGTYPESinterval_free ( ic ) ; PGTYPESinterval_free ( i1 ) ; } return ( 0 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { # line 62 <S2SV_ModEnd> \"dt_test2.pgc\" date date1 <S2SV_ModStart> ; # line 63 <S2SV_ModEnd> \"dt_test2.pgc\" timestamp ts1 <S2SV_ModStart> ; # line 64 <S2SV_ModEnd> \"dt_test2.pgc\" char * <S2SV_ModStart> ; # line 65 <S2SV_ModEnd> \"dt_test2.pgc\" interval * <S2SV_ModStart> ; # line 66 <S2SV_ModEnd> \"dt_test2.pgc\" date * <S2SV_ModStart> ; # line 67 <S2SV_ModEnd> \"dt_test2.pgc\" int i\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-13016\n\n```\nCWE-125 static void esis_print ( netdissect_options * ndo , const uint8_t * pptr , u_int length ) { const uint8_t * optr ; u_int li , esis_pdu_type , source_address_length , source_address_number ; const struct esis_header_t * esis_header ; if ( ! ndo -> ndo_eflag ) ND_PRINT ( ( ndo , \"ES-IS\" ) ) ; if ( length <= 2 ) { ND_PRINT ( ( ndo , ndo -> ndo_qflag ? \"bad<S2SV_blank>pkt!\" : \"no<S2SV_blank>header<S2SV_blank>at<S2SV_blank>all!\" ) ) ; return ; } esis_header = ( const struct esis_header_t * ) pptr ; ND_TCHECK ( * esis_header ) ; li = esis_header -> length_indicator ; optr = pptr ; if ( esis_header -> nlpid != NLPID_ESIS ) { ND_PRINT ( ( ndo , \"<S2SV_blank>nlpid<S2SV_blank>0x%02x<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , esis_header -> nlpid ) ) ; return ; } if ( esis_header -> version != ESIS_VERSION ) { ND_PRINT ( ( ndo , \"<S2SV_blank>version<S2SV_blank>%d<S2SV_blank>packet<S2SV_blank>not<S2SV_blank>supported\" , esis_header -> version ) ) ; return ; } if ( li > length ) { ND_PRINT ( ( ndo , \"<S2SV_blank>length<S2SV_blank>indicator(%u)<S2SV_blank>><S2SV_blank>PDU<S2SV_blank>size<S2SV_blank>(%u)!\" , li , length ) ) ; return ; } if ( li < sizeof ( struct esis_header_t ) + 2 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>length<S2SV_blank>indicator<S2SV_blank>%u<S2SV_blank><<S2SV_blank>min<S2SV_blank>PDU<S2SV_blank>size:\" , li ) ) ; while ( pptr < ndo -> ndo_snapend ) ND_PRINT ( ( ndo , \"%02X\" , * pptr ++ ) ) ; return ; } esis_pdu_type = esis_header -> type & ESIS_PDU_TYPE_MASK ; if ( ndo -> ndo_vflag < 1 ) { ND_PRINT ( ( ndo , \"%s%s,<S2SV_blank>length<S2SV_blank>%u\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , tok2str ( esis_pdu_values , \"unknown<S2SV_blank>type<S2SV_blank>(%u)\" , esis_pdu_type ) , length ) ) ; return ; } else ND_PRINT ( ( ndo , \"%slength<S2SV_blank>%u\\\\n\\\\t%s<S2SV_blank>(%u)\" , ndo -> ndo_eflag ? \"\" : \",<S2SV_blank>\" , length , tok2str ( esis_pdu_values , \"unknown<S2SV_blank>type:<S2SV_blank>%u\" , esis_pdu_type ) , esis_pdu_type ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>v:<S2SV_blank>%u%s\" , esis_header -> version , esis_header -> version == ESIS_VERSION ? \"\" : \"unsupported\" ) ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>checksum:<S2SV_blank>0x%04x\" , EXTRACT_16BITS ( esis_header -> cksum ) ) ) ; osi_print_cksum ( ndo , pptr , EXTRACT_16BITS ( esis_header -> cksum ) , 7 , li ) ; ND_PRINT ( ( ndo , \",<S2SV_blank>holding<S2SV_blank>time:<S2SV_blank>%us,<S2SV_blank>length<S2SV_blank>indicator:<S2SV_blank>%u\" , EXTRACT_16BITS ( esis_header -> holdtime ) , li ) ) ; if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , optr , \"\\\\n\\\\t\" , sizeof ( struct esis_header_t ) ) ; pptr += sizeof ( struct esis_header_t ) ; li -= sizeof ( struct esis_header_t ) ; switch ( esis_pdu_type ) { case ESIS_PDU_REDIRECT : { const uint8_t * dst , * snpa , * neta ; u_int dstl , snpal , netal ; ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } dstl = * pptr ; pptr ++ ; li -- ; ND_TCHECK2 ( * pptr , dstl ) ; if ( li < dstl ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } dst = pptr ; pptr += dstl ; li -= dstl ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s\" , isonsap_string ( ndo , dst , dstl ) ) ) ; ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } snpal = * pptr ; pptr ++ ; li -- ; ND_TCHECK2 ( * pptr , snpal ) ; if ( li < snpal ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } snpa = pptr ; pptr += snpal ; li -= snpal ; ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } netal = * pptr ; pptr ++ ; ND_TCHECK2 ( * pptr , netal ) ; if ( li < netal ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>redirect/li\" ) ) ; return ; } neta = pptr ; pptr += netal ; li -= netal ; <S2SV_StartBug> if ( netal == 0 ) <S2SV_EndBug> <S2SV_StartBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s\" , etheraddr_string ( ndo , snpa ) ) ) ; <S2SV_EndBug> else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s\" , isonsap_string ( ndo , neta , netal ) ) ) ; break ; } case ESIS_PDU_ESH : ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>esh/li\" ) ) ; return ; } source_address_number = * pptr ; pptr ++ ; li -- ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>Source<S2SV_blank>Addresses:<S2SV_blank>%u\" , source_address_number ) ) ; while ( source_address_number > 0 ) { ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>esh/li\" ) ) ; return ; } source_address_length = * pptr ; pptr ++ ; li -- ; ND_TCHECK2 ( * pptr , source_address_length ) ; if ( li < source_address_length ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>esh/li\" ) ) ; return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>NET<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , source_address_length , isonsap_string ( ndo , pptr , source_address_length ) ) ) ; pptr += source_address_length ; li -= source_address_length ; source_address_number -- ; } break ; case ESIS_PDU_ISH : { ND_TCHECK ( * pptr ) ; if ( li < 1 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>ish/li\" ) ) ; return ; } source_address_length = * pptr ; pptr ++ ; li -- ; ND_TCHECK2 ( * pptr , source_address_length ) ; if ( li < source_address_length ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>ish/li\" ) ) ; return ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>NET<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , source_address_length , isonsap_string ( ndo , pptr , source_address_length ) ) ) ; pptr += source_address_length ; li -= source_address_length ; break ; } default : if ( ndo -> ndo_vflag <= 1 ) { if ( pptr < ndo -> ndo_snapend ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , ndo -> ndo_snapend - pptr ) ; } return ; } while ( li != 0 ) { u_int op , opli ; const uint8_t * tptr ; if ( li < 2 ) { ND_PRINT ( ( ndo , \",<S2SV_blank>bad<S2SV_blank>opts/li\" ) ) ; return ; } ND_TCHECK2 ( * pptr , 2 ) ; op = * pptr ++ ; opli = * pptr ++ ; li -= 2 ; if ( opli > li ) { ND_PRINT ( ( ndo , \",<S2SV_blank>opt<S2SV_blank>(%d)<S2SV_blank>too<S2SV_blank>long\" , op ) ) ; return ; } li -= opli ; tptr = pptr ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>%s<S2SV_blank>Option<S2SV_blank>#%u,<S2SV_blank>length<S2SV_blank>%u,<S2SV_blank>value:<S2SV_blank>\" , tok2str ( esis_option_values , \"Unknown\" , op ) , op , opli ) ) ; switch ( op ) { case ESIS_OPTION_ES_CONF_TIME : if ( opli == 2 ) { ND_TCHECK2 ( * pptr , 2 ) ; ND_PRINT ( ( ndo , \"%us\" , EXTRACT_16BITS ( tptr ) ) ) ; } else ND_PRINT ( ( ndo , \"(bad<S2SV_blank>length)\" ) ) ; break ; case ESIS_OPTION_PROTOCOLS : while ( opli > 0 ) { ND_TCHECK ( * pptr ) ; ND_PRINT ( ( ndo , \"%s<S2SV_blank>(0x%02x)\" , tok2str ( nlpid_values , \"unknown\" , * tptr ) , * tptr ) ) ; if ( opli > 1 ) ND_PRINT ( ( ndo , \",<S2SV_blank>\" ) ) ; tptr ++ ; opli -- ; } break ; case ESIS_OPTION_QOS_MAINTENANCE : case ESIS_OPTION_SECURITY : case ESIS_OPTION_PRIORITY : case ESIS_OPTION_ADDRESS_MASK : case ESIS_OPTION_SNPA_MASK : default : print_unknown_data ( ndo , tptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , opli ) ; break ; } if ( ndo -> ndo_vflag > 1 ) print_unknown_data ( ndo , pptr , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>\" , opli ) ; pptr += opli ; } trunc : return ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( snpal == 6 ) ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>SNPA<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , snpal , etheraddr_string ( ndo , snpa ) ) ) ; else ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>SNPA<S2SV_blank>(length:<S2SV_blank>%u):<S2SV_blank>%s\" , snpal , linkaddr_string ( ndo , snpa , LINKADDR_OTHER , snpal ) ) ) ; if ( netal != <S2SV_ModEnd> 0 ) ND_PRINT <S2SV_ModStart> ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank>NET<S2SV_blank>(length:<S2SV_blank>%u)<S2SV_blank>%s\" , netal , <S2SV_ModEnd> isonsap_string ( ndo\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-11218\n\n```\nCWE-119 void mp_decode_to_lua_array ( lua_State * L , mp_cur * c , size_t len ) { assert ( len <= UINT_MAX ) ; int index = 1 ; <S2SV_StartBug> lua_newtable ( L ) ; <S2SV_EndBug> while ( len -- ) { lua_pushnumber ( L , index ++ ) ; mp_decode_to_lua_type ( L , c ) ; if ( c -> err ) return ; lua_settable ( L , - 3 ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> lua_newtable ( L ) ; luaL_checkstack ( L , 1 , \"in<S2SV_blank>function<S2SV_blank>mp_decode_to_lua_array\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-665(初始化不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-16921\n\n```\nCWE-665 static struct ib_ucontext * hns_roce_alloc_ucontext ( struct ib_device * ib_dev , struct ib_udata * udata ) { int ret = 0 ; struct hns_roce_ucontext * context ; <S2SV_StartBug> struct hns_roce_ib_alloc_ucontext_resp resp ; <S2SV_EndBug> struct hns_roce_dev * hr_dev = to_hr_dev ( ib_dev ) ; resp . qp_tab_size = hr_dev -> caps . num_qps ; context = kmalloc ( sizeof ( * context ) , GFP_KERNEL ) ; if ( ! context ) return ERR_PTR ( - ENOMEM ) ; ret = hns_roce_uar_alloc ( hr_dev , & context -> uar ) ; if ( ret ) goto error_fail_uar_alloc ; if ( hr_dev -> caps . flags & HNS_ROCE_CAP_FLAG_RECORD_DB ) { INIT_LIST_HEAD ( & context -> page_list ) ; mutex_init ( & context -> page_mutex ) ; } ret = ib_copy_to_udata ( udata , & resp , sizeof ( resp ) ) ; if ( ret ) goto error_fail_copy_to_udata ; return & context -> ibucontext ; error_fail_copy_to_udata : hns_roce_uar_free ( hr_dev , & context -> uar ) ; error_fail_uar_alloc : kfree ( context ) ; return ERR_PTR ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> struct hns_roce_ib_alloc_ucontext_resp resp = { }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10208\n\n```\nCWE-125 static int ext4_fill_super ( struct super_block * sb , void * data , int silent ) { char * orig_data = kstrdup ( data , GFP_KERNEL ) ; struct buffer_head * bh ; struct ext4_super_block * es = NULL ; struct ext4_sb_info * sbi = kzalloc ( sizeof ( * sbi ) , GFP_KERNEL ) ; ext4_fsblk_t block ; ext4_fsblk_t sb_block = get_sb_block ( & data ) ; ext4_fsblk_t logical_sb_block ; unsigned long offset = 0 ; unsigned long journal_devnum = 0 ; unsigned long def_mount_opts ; struct inode * root ; const char * descr ; int ret = - ENOMEM ; int blocksize , clustersize ; unsigned int db_count ; unsigned int i ; int needs_recovery , has_huge_files , has_bigalloc ; __u64 blocks_count ; int err = 0 ; unsigned int journal_ioprio = DEFAULT_JOURNAL_IOPRIO ; ext4_group_t first_not_zeroed ; if ( ( data && ! orig_data ) || ! sbi ) goto out_free_base ; sbi -> s_blockgroup_lock = kzalloc ( sizeof ( struct blockgroup_lock ) , GFP_KERNEL ) ; if ( ! sbi -> s_blockgroup_lock ) goto out_free_base ; sb -> s_fs_info = sbi ; sbi -> s_sb = sb ; sbi -> s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS ; sbi -> s_sb_block = sb_block ; if ( sb -> s_bdev -> bd_part ) sbi -> s_sectors_written_start = part_stat_read ( sb -> s_bdev -> bd_part , sectors [ 1 ] ) ; strreplace ( sb -> s_id , '/' , '!' ) ; ret = - EINVAL ; blocksize = sb_min_blocksize ( sb , EXT4_MIN_BLOCK_SIZE ) ; if ( ! blocksize ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>set<S2SV_blank>blocksize\" ) ; goto out_fail ; } if ( blocksize != EXT4_MIN_BLOCK_SIZE ) { logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE ; offset = do_div ( logical_sb_block , blocksize ) ; } else { logical_sb_block = sb_block ; } if ( ! ( bh = sb_bread_unmovable ( sb , logical_sb_block ) ) ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>superblock\" ) ; goto out_fail ; } es = ( struct ext4_super_block * ) ( bh -> b_data + offset ) ; sbi -> s_es = es ; sb -> s_magic = le16_to_cpu ( es -> s_magic ) ; if ( sb -> s_magic != EXT4_SUPER_MAGIC ) goto cantfind_ext4 ; sbi -> s_kbytes_written = le64_to_cpu ( es -> s_kbytes_written ) ; if ( ext4_has_feature_metadata_csum ( sb ) && ext4_has_feature_gdt_csum ( sb ) ) ext4_warning ( sb , \"metadata_csum<S2SV_blank>and<S2SV_blank>uninit_bg<S2SV_blank>are<S2SV_blank>\" \"redundant<S2SV_blank>flags;<S2SV_blank>please<S2SV_blank>run<S2SV_blank>fsck.\" ) ; if ( ! ext4_verify_csum_type ( sb , es ) ) { ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Found<S2SV_blank>ext4<S2SV_blank>filesystem<S2SV_blank>with<S2SV_blank>\" \"unknown<S2SV_blank>checksum<S2SV_blank>algorithm.\" ) ; silent = 1 ; goto cantfind_ext4 ; } if ( ext4_has_feature_metadata_csum ( sb ) ) { sbi -> s_chksum_driver = crypto_alloc_shash ( \"crc32c\" , 0 , 0 ) ; if ( IS_ERR ( sbi -> s_chksum_driver ) ) { ext4_msg ( sb , KERN_ERR , \"Cannot<S2SV_blank>load<S2SV_blank>crc32c<S2SV_blank>driver.\" ) ; ret = PTR_ERR ( sbi -> s_chksum_driver ) ; sbi -> s_chksum_driver = NULL ; goto failed_mount ; } } if ( ! ext4_superblock_csum_verify ( sb , es ) ) { ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Found<S2SV_blank>ext4<S2SV_blank>filesystem<S2SV_blank>with<S2SV_blank>\" \"invalid<S2SV_blank>superblock<S2SV_blank>checksum.<S2SV_blank><S2SV_blank>Run<S2SV_blank>e2fsck?\" ) ; silent = 1 ; ret = - EFSBADCRC ; goto cantfind_ext4 ; } if ( ext4_has_feature_csum_seed ( sb ) ) sbi -> s_csum_seed = le32_to_cpu ( es -> s_checksum_seed ) ; else if ( ext4_has_metadata_csum ( sb ) ) sbi -> s_csum_seed = ext4_chksum ( sbi , ~ 0 , es -> s_uuid , sizeof ( es -> s_uuid ) ) ; def_mount_opts = le32_to_cpu ( es -> s_default_mount_opts ) ; set_opt ( sb , INIT_INODE_TABLE ) ; if ( def_mount_opts & EXT4_DEFM_DEBUG ) set_opt ( sb , DEBUG ) ; if ( def_mount_opts & EXT4_DEFM_BSDGROUPS ) set_opt ( sb , GRPID ) ; if ( def_mount_opts & EXT4_DEFM_UID16 ) set_opt ( sb , NO_UID32 ) ; set_opt ( sb , XATTR_USER ) ; # ifdef CONFIG_EXT4_FS_POSIX_ACL set_opt ( sb , POSIX_ACL ) ; # endif if ( ext4_has_metadata_csum ( sb ) ) set_opt ( sb , JOURNAL_CHECKSUM ) ; if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_DATA ) set_opt ( sb , JOURNAL_DATA ) ; else if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_ORDERED ) set_opt ( sb , ORDERED_DATA ) ; else if ( ( def_mount_opts & EXT4_DEFM_JMODE ) == EXT4_DEFM_JMODE_WBACK ) set_opt ( sb , WRITEBACK_DATA ) ; if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT4_ERRORS_PANIC ) set_opt ( sb , ERRORS_PANIC ) ; else if ( le16_to_cpu ( sbi -> s_es -> s_errors ) == EXT4_ERRORS_CONTINUE ) set_opt ( sb , ERRORS_CONT ) ; else set_opt ( sb , ERRORS_RO ) ; set_opt ( sb , BLOCK_VALIDITY ) ; if ( def_mount_opts & EXT4_DEFM_DISCARD ) set_opt ( sb , DISCARD ) ; sbi -> s_resuid = make_kuid ( & init_user_ns , le16_to_cpu ( es -> s_def_resuid ) ) ; sbi -> s_resgid = make_kgid ( & init_user_ns , le16_to_cpu ( es -> s_def_resgid ) ) ; sbi -> s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ; sbi -> s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME ; sbi -> s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME ; if ( ( def_mount_opts & EXT4_DEFM_NOBARRIER ) == 0 ) set_opt ( sb , BARRIER ) ; if ( ! IS_EXT3_SB ( sb ) && ! IS_EXT2_SB ( sb ) && ( ( def_mount_opts & EXT4_DEFM_NODELALLOC ) == 0 ) ) set_opt ( sb , DELALLOC ) ; sbi -> s_li_wait_mult = EXT4_DEF_LI_WAIT_MULT ; if ( sbi -> s_es -> s_mount_opts [ 0 ] ) { char * s_mount_opts = kstrndup ( sbi -> s_es -> s_mount_opts , sizeof ( sbi -> s_es -> s_mount_opts ) , GFP_KERNEL ) ; if ( ! s_mount_opts ) goto failed_mount ; if ( ! parse_options ( s_mount_opts , sb , & journal_devnum , & journal_ioprio , 0 ) ) { ext4_msg ( sb , KERN_WARNING , \"failed<S2SV_blank>to<S2SV_blank>parse<S2SV_blank>options<S2SV_blank>in<S2SV_blank>superblock:<S2SV_blank>%s\" , s_mount_opts ) ; } kfree ( s_mount_opts ) ; } sbi -> s_def_mount_opt = sbi -> s_mount_opt ; if ( ! parse_options ( ( char * ) data , sb , & journal_devnum , & journal_ioprio , 0 ) ) goto failed_mount ; if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) { printk_once ( KERN_WARNING \"EXT4-fs:<S2SV_blank>Warning:<S2SV_blank>mounting<S2SV_blank>\" \"with<S2SV_blank>data=journal<S2SV_blank>disables<S2SV_blank>delayed<S2SV_blank>\" \"allocation<S2SV_blank>and<S2SV_blank>O_DIRECT<S2SV_blank>support!\\\\n\" ) ; if ( test_opt2 ( sb , EXPLICIT_DELALLOC ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>delalloc\" ) ; goto failed_mount ; } if ( test_opt ( sb , DIOREAD_NOLOCK ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>dioread_nolock\" ) ; goto failed_mount ; } if ( test_opt ( sb , DAX ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"both<S2SV_blank>data=journal<S2SV_blank>and<S2SV_blank>dax\" ) ; goto failed_mount ; } if ( test_opt ( sb , DELALLOC ) ) clear_opt ( sb , DELALLOC ) ; } else { sb -> s_iflags |= SB_I_CGROUPWB ; } sb -> s_flags = ( sb -> s_flags & ~ MS_POSIXACL ) | ( test_opt ( sb , POSIX_ACL ) ? MS_POSIXACL : 0 ) ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT4_GOOD_OLD_REV && ( ext4_has_compat_features ( sb ) || ext4_has_ro_compat_features ( sb ) || ext4_has_incompat_features ( sb ) ) ) ext4_msg ( sb , KERN_WARNING , \"feature<S2SV_blank>flags<S2SV_blank>set<S2SV_blank>on<S2SV_blank>rev<S2SV_blank>0<S2SV_blank>fs,<S2SV_blank>\" \"running<S2SV_blank>e2fsck<S2SV_blank>is<S2SV_blank>recommended\" ) ; if ( es -> s_creator_os == cpu_to_le32 ( EXT4_OS_HURD ) ) { set_opt2 ( sb , HURD_COMPAT ) ; if ( ext4_has_feature_64bit ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"The<S2SV_blank>Hurd<S2SV_blank>can\\'t<S2SV_blank>support<S2SV_blank>64-bit<S2SV_blank>file<S2SV_blank>systems\" ) ; goto failed_mount ; } } if ( IS_EXT2_SB ( sb ) ) { if ( ext2_feature_set_ok ( sb ) ) ext4_msg ( sb , KERN_INFO , \"mounting<S2SV_blank>ext2<S2SV_blank>file<S2SV_blank>system<S2SV_blank>\" \"using<S2SV_blank>the<S2SV_blank>ext4<S2SV_blank>subsystem\" ) ; else { ext4_msg ( sb , KERN_ERR , \"couldn\\'t<S2SV_blank>mount<S2SV_blank>as<S2SV_blank>ext2<S2SV_blank>due<S2SV_blank>\" \"to<S2SV_blank>feature<S2SV_blank>incompatibilities\" ) ; goto failed_mount ; } } if ( IS_EXT3_SB ( sb ) ) { if ( ext3_feature_set_ok ( sb ) ) ext4_msg ( sb , KERN_INFO , \"mounting<S2SV_blank>ext3<S2SV_blank>file<S2SV_blank>system<S2SV_blank>\" \"using<S2SV_blank>the<S2SV_blank>ext4<S2SV_blank>subsystem\" ) ; else { ext4_msg ( sb , KERN_ERR , \"couldn\\'t<S2SV_blank>mount<S2SV_blank>as<S2SV_blank>ext3<S2SV_blank>due<S2SV_blank>\" \"to<S2SV_blank>feature<S2SV_blank>incompatibilities\" ) ; goto failed_mount ; } } if ( ! ext4_feature_set_ok ( sb , ( sb -> s_flags & MS_RDONLY ) ) ) goto failed_mount ; blocksize = BLOCK_SIZE << le32_to_cpu ( es -> s_log_block_size ) ; if ( blocksize < EXT4_MIN_BLOCK_SIZE || blocksize > EXT4_MAX_BLOCK_SIZE ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>filesystem<S2SV_blank>blocksize<S2SV_blank>%d<S2SV_blank>(%d<S2SV_blank>log_block_size)\" , blocksize , le32_to_cpu ( es -> s_log_block_size ) ) ; goto failed_mount ; } if ( le32_to_cpu ( es -> s_log_block_size ) > ( EXT4_MAX_BLOCK_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE ) ) { ext4_msg ( sb , KERN_ERR , \"Invalid<S2SV_blank>log<S2SV_blank>block<S2SV_blank>size:<S2SV_blank>%u\" , le32_to_cpu ( es -> s_log_block_size ) ) ; goto failed_mount ; } if ( le16_to_cpu ( sbi -> s_es -> s_reserved_gdt_blocks ) > ( blocksize / 4 ) ) { ext4_msg ( sb , KERN_ERR , \"Number<S2SV_blank>of<S2SV_blank>reserved<S2SV_blank>GDT<S2SV_blank>blocks<S2SV_blank>insanely<S2SV_blank>large:<S2SV_blank>%d\" , le16_to_cpu ( sbi -> s_es -> s_reserved_gdt_blocks ) ) ; goto failed_mount ; } if ( sbi -> s_mount_opt & EXT4_MOUNT_DAX ) { err = bdev_dax_supported ( sb , blocksize ) ; if ( err ) goto failed_mount ; } if ( ext4_has_feature_encrypt ( sb ) && es -> s_encryption_level ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>encryption<S2SV_blank>level<S2SV_blank>%d\" , es -> s_encryption_level ) ; goto failed_mount ; } if ( sb -> s_blocksize != blocksize ) { if ( ! sb_set_blocksize ( sb , blocksize ) ) { ext4_msg ( sb , KERN_ERR , \"bad<S2SV_blank>block<S2SV_blank>size<S2SV_blank>%d\" , blocksize ) ; goto failed_mount ; } brelse ( bh ) ; logical_sb_block = sb_block * EXT4_MIN_BLOCK_SIZE ; offset = do_div ( logical_sb_block , blocksize ) ; bh = sb_bread_unmovable ( sb , logical_sb_block ) ; if ( ! bh ) { ext4_msg ( sb , KERN_ERR , \"Can\\'t<S2SV_blank>read<S2SV_blank>superblock<S2SV_blank>on<S2SV_blank>2nd<S2SV_blank>try\" ) ; goto failed_mount ; } es = ( struct ext4_super_block * ) ( bh -> b_data + offset ) ; sbi -> s_es = es ; if ( es -> s_magic != cpu_to_le16 ( EXT4_SUPER_MAGIC ) ) { ext4_msg ( sb , KERN_ERR , \"Magic<S2SV_blank>mismatch,<S2SV_blank>very<S2SV_blank>weird!\" ) ; goto failed_mount ; } } has_huge_files = ext4_has_feature_huge_file ( sb ) ; sbi -> s_bitmap_maxbytes = ext4_max_bitmap_size ( sb -> s_blocksize_bits , has_huge_files ) ; sb -> s_maxbytes = ext4_max_size ( sb -> s_blocksize_bits , has_huge_files ) ; if ( le32_to_cpu ( es -> s_rev_level ) == EXT4_GOOD_OLD_REV ) { sbi -> s_inode_size = EXT4_GOOD_OLD_INODE_SIZE ; sbi -> s_first_ino = EXT4_GOOD_OLD_FIRST_INO ; } else { sbi -> s_inode_size = le16_to_cpu ( es -> s_inode_size ) ; sbi -> s_first_ino = le32_to_cpu ( es -> s_first_ino ) ; if ( ( sbi -> s_inode_size < EXT4_GOOD_OLD_INODE_SIZE ) || ( ! is_power_of_2 ( sbi -> s_inode_size ) ) || ( sbi -> s_inode_size > blocksize ) ) { ext4_msg ( sb , KERN_ERR , \"unsupported<S2SV_blank>inode<S2SV_blank>size:<S2SV_blank>%d\" , sbi -> s_inode_size ) ; goto failed_mount ; } if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE ) sb -> s_time_gran = 1 << ( EXT4_EPOCH_BITS - 2 ) ; } sbi -> s_desc_size = le16_to_cpu ( es -> s_desc_size ) ; if ( ext4_has_feature_64bit ( sb ) ) { if ( sbi -> s_desc_size < EXT4_MIN_DESC_SIZE_64BIT || sbi -> s_desc_size > EXT4_MAX_DESC_SIZE || ! is_power_of_2 ( sbi -> s_desc_size ) ) { ext4_msg ( sb , KERN_ERR , \"unsupported<S2SV_blank>descriptor<S2SV_blank>size<S2SV_blank>%lu\" , sbi -> s_desc_size ) ; goto failed_mount ; } } else sbi -> s_desc_size = EXT4_MIN_DESC_SIZE ; sbi -> s_blocks_per_group = le32_to_cpu ( es -> s_blocks_per_group ) ; sbi -> s_inodes_per_group = le32_to_cpu ( es -> s_inodes_per_group ) ; sbi -> s_inodes_per_block = blocksize / EXT4_INODE_SIZE ( sb ) ; if ( sbi -> s_inodes_per_block == 0 ) goto cantfind_ext4 ; if ( sbi -> s_inodes_per_group < sbi -> s_inodes_per_block || sbi -> s_inodes_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"invalid<S2SV_blank>inodes<S2SV_blank>per<S2SV_blank>group:<S2SV_blank>%lu\\\\n\" , sbi -> s_blocks_per_group ) ; goto failed_mount ; } sbi -> s_itb_per_group = sbi -> s_inodes_per_group / sbi -> s_inodes_per_block ; sbi -> s_desc_per_block = blocksize / EXT4_DESC_SIZE ( sb ) ; sbi -> s_sbh = bh ; sbi -> s_mount_state = le16_to_cpu ( es -> s_state ) ; sbi -> s_addr_per_block_bits = ilog2 ( EXT4_ADDR_PER_BLOCK ( sb ) ) ; sbi -> s_desc_per_block_bits = ilog2 ( EXT4_DESC_PER_BLOCK ( sb ) ) ; for ( i = 0 ; i < 4 ; i ++ ) sbi -> s_hash_seed [ i ] = le32_to_cpu ( es -> s_hash_seed [ i ] ) ; sbi -> s_def_hash_version = es -> s_def_hash_version ; if ( ext4_has_feature_dir_index ( sb ) ) { i = le32_to_cpu ( es -> s_flags ) ; if ( i & EXT2_FLAGS_UNSIGNED_HASH ) sbi -> s_hash_unsigned = 3 ; else if ( ( i & EXT2_FLAGS_SIGNED_HASH ) == 0 ) { # ifdef __CHAR_UNSIGNED__ if ( ! ( sb -> s_flags & MS_RDONLY ) ) es -> s_flags |= cpu_to_le32 ( EXT2_FLAGS_UNSIGNED_HASH ) ; sbi -> s_hash_unsigned = 3 ; # else if ( ! ( sb -> s_flags & MS_RDONLY ) ) es -> s_flags |= cpu_to_le32 ( EXT2_FLAGS_SIGNED_HASH ) ; # endif } } clustersize = BLOCK_SIZE << le32_to_cpu ( es -> s_log_cluster_size ) ; has_bigalloc = ext4_has_feature_bigalloc ( sb ) ; if ( has_bigalloc ) { if ( clustersize < blocksize ) { ext4_msg ( sb , KERN_ERR , \"cluster<S2SV_blank>size<S2SV_blank>(%d)<S2SV_blank>smaller<S2SV_blank>than<S2SV_blank>\" \"block<S2SV_blank>size<S2SV_blank>(%d)\" , clustersize , blocksize ) ; goto failed_mount ; } if ( le32_to_cpu ( es -> s_log_cluster_size ) > ( EXT4_MAX_CLUSTER_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE ) ) { ext4_msg ( sb , KERN_ERR , \"Invalid<S2SV_blank>log<S2SV_blank>cluster<S2SV_blank>size:<S2SV_blank>%u\" , le32_to_cpu ( es -> s_log_cluster_size ) ) ; goto failed_mount ; } sbi -> s_cluster_bits = le32_to_cpu ( es -> s_log_cluster_size ) - le32_to_cpu ( es -> s_log_block_size ) ; sbi -> s_clusters_per_group = le32_to_cpu ( es -> s_clusters_per_group ) ; if ( sbi -> s_clusters_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#clusters<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_clusters_per_group ) ; goto failed_mount ; } if ( sbi -> s_blocks_per_group != ( sbi -> s_clusters_per_group * ( clustersize / blocksize ) ) ) { ext4_msg ( sb , KERN_ERR , \"blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>(%lu)<S2SV_blank>and<S2SV_blank>\" \"clusters<S2SV_blank>per<S2SV_blank>group<S2SV_blank>(%lu)<S2SV_blank>inconsistent\" , sbi -> s_blocks_per_group , sbi -> s_clusters_per_group ) ; goto failed_mount ; } } else { if ( clustersize != blocksize ) { ext4_warning ( sb , \"fragment/cluster<S2SV_blank>size<S2SV_blank>(%d)<S2SV_blank>!=<S2SV_blank>\" \"block<S2SV_blank>size<S2SV_blank>(%d)\" , clustersize , blocksize ) ; clustersize = blocksize ; } if ( sbi -> s_blocks_per_group > blocksize * 8 ) { ext4_msg ( sb , KERN_ERR , \"#blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>too<S2SV_blank>big:<S2SV_blank>%lu\" , sbi -> s_blocks_per_group ) ; goto failed_mount ; } sbi -> s_clusters_per_group = sbi -> s_blocks_per_group ; sbi -> s_cluster_bits = 0 ; } sbi -> s_cluster_ratio = clustersize / blocksize ; if ( sbi -> s_blocks_per_group == clustersize << 3 ) set_opt2 ( sb , STD_GROUP_SIZE ) ; err = generic_check_addressable ( sb -> s_blocksize_bits , ext4_blocks_count ( es ) ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"filesystem\" \"<S2SV_blank>too<S2SV_blank>large<S2SV_blank>to<S2SV_blank>mount<S2SV_blank>safely<S2SV_blank>on<S2SV_blank>this<S2SV_blank>system\" ) ; if ( sizeof ( sector_t ) < 8 ) ext4_msg ( sb , KERN_WARNING , \"CONFIG_LBDAF<S2SV_blank>not<S2SV_blank>enabled\" ) ; goto failed_mount ; } if ( EXT4_BLOCKS_PER_GROUP ( sb ) == 0 ) goto cantfind_ext4 ; blocks_count = sb -> s_bdev -> bd_inode -> i_size >> sb -> s_blocksize_bits ; if ( blocks_count && ext4_blocks_count ( es ) > blocks_count ) { ext4_msg ( sb , KERN_WARNING , \"bad<S2SV_blank>geometry:<S2SV_blank>block<S2SV_blank>count<S2SV_blank>%llu<S2SV_blank>\" \"exceeds<S2SV_blank>size<S2SV_blank>of<S2SV_blank>device<S2SV_blank>(%llu<S2SV_blank>blocks)\" , ext4_blocks_count ( es ) , blocks_count ) ; goto failed_mount ; } if ( le32_to_cpu ( es -> s_first_data_block ) >= ext4_blocks_count ( es ) ) { ext4_msg ( sb , KERN_WARNING , \"bad<S2SV_blank>geometry:<S2SV_blank>first<S2SV_blank>data<S2SV_blank>\" \"block<S2SV_blank>%u<S2SV_blank>is<S2SV_blank>beyond<S2SV_blank>end<S2SV_blank>of<S2SV_blank>filesystem<S2SV_blank>(%llu)\" , le32_to_cpu ( es -> s_first_data_block ) , ext4_blocks_count ( es ) ) ; goto failed_mount ; } blocks_count = ( ext4_blocks_count ( es ) - le32_to_cpu ( es -> s_first_data_block ) + EXT4_BLOCKS_PER_GROUP ( sb ) - 1 ) ; do_div ( blocks_count , EXT4_BLOCKS_PER_GROUP ( sb ) ) ; if ( blocks_count > ( ( uint64_t ) 1 << 32 ) - EXT4_DESC_PER_BLOCK ( sb ) ) { ext4_msg ( sb , KERN_WARNING , \"groups<S2SV_blank>count<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%u<S2SV_blank>\" \"(block<S2SV_blank>count<S2SV_blank>%llu,<S2SV_blank>first<S2SV_blank>data<S2SV_blank>block<S2SV_blank>%u,<S2SV_blank>\" \"blocks<S2SV_blank>per<S2SV_blank>group<S2SV_blank>%lu)\" , sbi -> s_groups_count , ext4_blocks_count ( es ) , le32_to_cpu ( es -> s_first_data_block ) , EXT4_BLOCKS_PER_GROUP ( sb ) ) ; goto failed_mount ; } sbi -> s_groups_count = blocks_count ; sbi -> s_blockfile_groups = min_t ( ext4_group_t , sbi -> s_groups_count , ( EXT4_MAX_BLOCK_FILE_PHYS / EXT4_BLOCKS_PER_GROUP ( sb ) ) ) ; db_count = ( sbi -> s_groups_count + EXT4_DESC_PER_BLOCK ( sb ) - 1 ) / <S2SV_StartBug> EXT4_DESC_PER_BLOCK ( sb ) ; <S2SV_EndBug> sbi -> s_group_desc = ext4_kvmalloc ( db_count * sizeof ( struct buffer_head * ) , GFP_KERNEL ) ; if ( sbi -> s_group_desc == NULL ) { ext4_msg ( sb , KERN_ERR , \"not<S2SV_blank>enough<S2SV_blank>memory\" ) ; ret = - ENOMEM ; goto failed_mount ; } bgl_lock_init ( sbi -> s_blockgroup_lock ) ; for ( i = 0 ; i < db_count ; i ++ ) { block = descriptor_loc ( sb , logical_sb_block , i ) ; sbi -> s_group_desc [ i ] = sb_bread_unmovable ( sb , block ) ; if ( ! sbi -> s_group_desc [ i ] ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>read<S2SV_blank>group<S2SV_blank>descriptor<S2SV_blank>%d\" , i ) ; db_count = i ; goto failed_mount2 ; } } if ( ! ext4_check_descriptors ( sb , logical_sb_block , & first_not_zeroed ) ) { ext4_msg ( sb , KERN_ERR , \"group<S2SV_blank>descriptors<S2SV_blank>corrupted!\" ) ; ret = - EFSCORRUPTED ; goto failed_mount2 ; } sbi -> s_gdb_count = db_count ; get_random_bytes ( & sbi -> s_next_generation , sizeof ( u32 ) ) ; spin_lock_init ( & sbi -> s_next_gen_lock ) ; setup_timer ( & sbi -> s_err_report , print_daily_error_info , ( unsigned long ) sb ) ; if ( ext4_es_register_shrinker ( sbi ) ) goto failed_mount3 ; sbi -> s_stripe = ext4_get_stripe_size ( sbi ) ; sbi -> s_extent_max_zeroout_kb = 32 ; sb -> s_op = & ext4_sops ; sb -> s_export_op = & ext4_export_ops ; sb -> s_xattr = ext4_xattr_handlers ; sb -> s_cop = & ext4_cryptops ; # ifdef CONFIG_QUOTA sb -> dq_op = & ext4_quota_operations ; if ( ext4_has_feature_quota ( sb ) ) sb -> s_qcop = & dquot_quotactl_sysfile_ops ; else sb -> s_qcop = & ext4_qctl_operations ; sb -> s_quota_types = QTYPE_MASK_USR | QTYPE_MASK_GRP | QTYPE_MASK_PRJ ; # endif memcpy ( sb -> s_uuid , es -> s_uuid , sizeof ( es -> s_uuid ) ) ; INIT_LIST_HEAD ( & sbi -> s_orphan ) ; mutex_init ( & sbi -> s_orphan_lock ) ; sb -> s_root = NULL ; needs_recovery = ( es -> s_last_orphan != 0 || ext4_has_feature_journal_needs_recovery ( sb ) ) ; if ( ext4_has_feature_mmp ( sb ) && ! ( sb -> s_flags & MS_RDONLY ) ) if ( ext4_multi_mount_protect ( sb , le64_to_cpu ( es -> s_mmp_block ) ) ) goto failed_mount3a ; if ( ! test_opt ( sb , NOLOAD ) && ext4_has_feature_journal ( sb ) ) { if ( ext4_load_journal ( sb , es , journal_devnum ) ) goto failed_mount3a ; } else if ( test_opt ( sb , NOLOAD ) && ! ( sb -> s_flags & MS_RDONLY ) && ext4_has_feature_journal_needs_recovery ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"required<S2SV_blank>journal<S2SV_blank>recovery<S2SV_blank>\" \"suppressed<S2SV_blank>and<S2SV_blank>not<S2SV_blank>mounted<S2SV_blank>read-only\" ) ; goto failed_mount_wq ; } else { if ( test_opt2 ( sb , EXPLICIT_JOURNAL_CHECKSUM ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"journal_checksum,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } if ( test_opt ( sb , JOURNAL_ASYNC_COMMIT ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"journal_async_commit,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } if ( sbi -> s_commit_interval != JBD2_DEFAULT_MAX_COMMIT_AGE * HZ ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"commit=%lu,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" , sbi -> s_commit_interval / HZ ) ; goto failed_mount_wq ; } if ( EXT4_MOUNT_DATA_FLAGS & ( sbi -> s_mount_opt ^ sbi -> s_def_mount_opt ) ) { ext4_msg ( sb , KERN_ERR , \"can\\'t<S2SV_blank>mount<S2SV_blank>with<S2SV_blank>\" \"data=,<S2SV_blank>fs<S2SV_blank>mounted<S2SV_blank>w/o<S2SV_blank>journal\" ) ; goto failed_mount_wq ; } sbi -> s_def_mount_opt &= EXT4_MOUNT_JOURNAL_CHECKSUM ; clear_opt ( sb , JOURNAL_CHECKSUM ) ; clear_opt ( sb , DATA_FLAGS ) ; sbi -> s_journal = NULL ; needs_recovery = 0 ; goto no_journal ; } if ( ext4_has_feature_64bit ( sb ) && ! jbd2_journal_set_features ( EXT4_SB ( sb ) -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_64BIT ) ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>64-bit<S2SV_blank>journal<S2SV_blank>feature\" ) ; goto failed_mount_wq ; } if ( ! set_journal_csum_feature_set ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>journal<S2SV_blank>checksum<S2SV_blank>\" \"feature<S2SV_blank>set\" ) ; goto failed_mount_wq ; } switch ( test_opt ( sb , DATA_FLAGS ) ) { case 0 : if ( jbd2_journal_check_available_features ( sbi -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_REVOKE ) ) set_opt ( sb , ORDERED_DATA ) ; else set_opt ( sb , JOURNAL_DATA ) ; break ; case EXT4_MOUNT_ORDERED_DATA : case EXT4_MOUNT_WRITEBACK_DATA : if ( ! jbd2_journal_check_available_features ( sbi -> s_journal , 0 , 0 , JBD2_FEATURE_INCOMPAT_REVOKE ) ) { ext4_msg ( sb , KERN_ERR , \"Journal<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>\" \"requested<S2SV_blank>data<S2SV_blank>journaling<S2SV_blank>mode\" ) ; goto failed_mount_wq ; } default : break ; } set_task_ioprio ( sbi -> s_journal -> j_task , journal_ioprio ) ; sbi -> s_journal -> j_commit_callback = ext4_journal_commit_callback ; no_journal : sbi -> s_mb_cache = ext4_xattr_create_cache ( ) ; if ( ! sbi -> s_mb_cache ) { ext4_msg ( sb , KERN_ERR , \"Failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>an<S2SV_blank>mb_cache\" ) ; goto failed_mount_wq ; } if ( ( DUMMY_ENCRYPTION_ENABLED ( sbi ) || ext4_has_feature_encrypt ( sb ) ) && ( blocksize != PAGE_SIZE ) ) { ext4_msg ( sb , KERN_ERR , \"Unsupported<S2SV_blank>blocksize<S2SV_blank>for<S2SV_blank>fs<S2SV_blank>encryption\" ) ; goto failed_mount_wq ; } if ( DUMMY_ENCRYPTION_ENABLED ( sbi ) && ! ( sb -> s_flags & MS_RDONLY ) && ! ext4_has_feature_encrypt ( sb ) ) { ext4_set_feature_encrypt ( sb ) ; ext4_commit_super ( sb , 1 ) ; } if ( es -> s_overhead_clusters ) sbi -> s_overhead = le32_to_cpu ( es -> s_overhead_clusters ) ; else { err = ext4_calculate_overhead ( sb ) ; if ( err ) goto failed_mount_wq ; } EXT4_SB ( sb ) -> rsv_conversion_wq = alloc_workqueue ( \"ext4-rsv-conversion\" , WQ_MEM_RECLAIM | WQ_UNBOUND , 1 ) ; if ( ! EXT4_SB ( sb ) -> rsv_conversion_wq ) { printk ( KERN_ERR \"EXT4-fs:<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>create<S2SV_blank>workqueue\\\\n\" ) ; ret = - ENOMEM ; goto failed_mount4 ; } root = ext4_iget ( sb , EXT4_ROOT_INO ) ; if ( IS_ERR ( root ) ) { ext4_msg ( sb , KERN_ERR , \"get<S2SV_blank>root<S2SV_blank>inode<S2SV_blank>failed\" ) ; ret = PTR_ERR ( root ) ; root = NULL ; goto failed_mount4 ; } if ( ! S_ISDIR ( root -> i_mode ) || ! root -> i_blocks || ! root -> i_size ) { ext4_msg ( sb , KERN_ERR , \"corrupt<S2SV_blank>root<S2SV_blank>inode,<S2SV_blank>run<S2SV_blank>e2fsck\" ) ; iput ( root ) ; goto failed_mount4 ; } sb -> s_root = d_make_root ( root ) ; if ( ! sb -> s_root ) { ext4_msg ( sb , KERN_ERR , \"get<S2SV_blank>root<S2SV_blank>dentry<S2SV_blank>failed\" ) ; ret = - ENOMEM ; goto failed_mount4 ; } if ( ext4_setup_super ( sb , es , sb -> s_flags & MS_RDONLY ) ) sb -> s_flags |= MS_RDONLY ; if ( sbi -> s_inode_size > EXT4_GOOD_OLD_INODE_SIZE ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; if ( ext4_has_feature_extra_isize ( sb ) ) { if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_want_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_want_extra_isize ) ; if ( sbi -> s_want_extra_isize < le16_to_cpu ( es -> s_min_extra_isize ) ) sbi -> s_want_extra_isize = le16_to_cpu ( es -> s_min_extra_isize ) ; } } if ( EXT4_GOOD_OLD_INODE_SIZE + sbi -> s_want_extra_isize > sbi -> s_inode_size ) { sbi -> s_want_extra_isize = sizeof ( struct ext4_inode ) - EXT4_GOOD_OLD_INODE_SIZE ; ext4_msg ( sb , KERN_INFO , \"required<S2SV_blank>extra<S2SV_blank>inode<S2SV_blank>space<S2SV_blank>not\" \"available\" ) ; } ext4_set_resv_clusters ( sb ) ; err = ext4_setup_system_zone ( sb ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>system<S2SV_blank>\" \"zone<S2SV_blank>(%d)\" , err ) ; goto failed_mount4a ; } ext4_ext_init ( sb ) ; err = ext4_mb_init ( sb ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"failed<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>mballoc<S2SV_blank>(%d)\" , err ) ; goto failed_mount5 ; } block = ext4_count_free_clusters ( sb ) ; ext4_free_blocks_count_set ( sbi -> s_es , EXT4_C2B ( sbi , block ) ) ; err = percpu_counter_init ( & sbi -> s_freeclusters_counter , block , GFP_KERNEL ) ; if ( ! err ) { unsigned long freei = ext4_count_free_inodes ( sb ) ; sbi -> s_es -> s_free_inodes_count = cpu_to_le32 ( freei ) ; err = percpu_counter_init ( & sbi -> s_freeinodes_counter , freei , GFP_KERNEL ) ; } if ( ! err ) err = percpu_counter_init ( & sbi -> s_dirs_counter , ext4_count_dirs ( sb ) , GFP_KERNEL ) ; if ( ! err ) err = percpu_counter_init ( & sbi -> s_dirtyclusters_counter , 0 , GFP_KERNEL ) ; if ( ! err ) err = percpu_init_rwsem ( & sbi -> s_journal_flag_rwsem ) ; if ( err ) { ext4_msg ( sb , KERN_ERR , \"insufficient<S2SV_blank>memory\" ) ; goto failed_mount6 ; } if ( ext4_has_feature_flex_bg ( sb ) ) if ( ! ext4_fill_flex_info ( sb ) ) { ext4_msg ( sb , KERN_ERR , \"unable<S2SV_blank>to<S2SV_blank>initialize<S2SV_blank>\" \"flex_bg<S2SV_blank>meta<S2SV_blank>info!\" ) ; goto failed_mount6 ; } err = ext4_register_li_request ( sb , first_not_zeroed ) ; if ( err ) goto failed_mount6 ; err = ext4_register_sysfs ( sb ) ; if ( err ) goto failed_mount7 ; # ifdef CONFIG_QUOTA if ( ext4_has_feature_quota ( sb ) && ! ( sb -> s_flags & MS_RDONLY ) ) { err = ext4_enable_quotas ( sb ) ; if ( err ) goto failed_mount8 ; } # endif EXT4_SB ( sb ) -> s_mount_state |= EXT4_ORPHAN_FS ; ext4_orphan_cleanup ( sb , es ) ; EXT4_SB ( sb ) -> s_mount_state &= ~ EXT4_ORPHAN_FS ; if ( needs_recovery ) { ext4_msg ( sb , KERN_INFO , \"recovery<S2SV_blank>complete\" ) ; ext4_mark_recovery_complete ( sb , es ) ; } if ( EXT4_SB ( sb ) -> s_journal ) { if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_JOURNAL_DATA ) descr = \"<S2SV_blank>journalled<S2SV_blank>data<S2SV_blank>mode\" ; else if ( test_opt ( sb , DATA_FLAGS ) == EXT4_MOUNT_ORDERED_DATA ) descr = \"<S2SV_blank>ordered<S2SV_blank>data<S2SV_blank>mode\" ; else descr = \"<S2SV_blank>writeback<S2SV_blank>data<S2SV_blank>mode\" ; } else descr = \"out<S2SV_blank>journal\" ; if ( test_opt ( sb , DISCARD ) ) { struct request_queue * q = bdev_get_queue ( sb -> s_bdev ) ; if ( ! blk_queue_discard ( q ) ) ext4_msg ( sb , KERN_WARNING , \"mounting<S2SV_blank>with<S2SV_blank>\\\\\"discard\\\\\"<S2SV_blank>option,<S2SV_blank>but<S2SV_blank>\" \"the<S2SV_blank>device<S2SV_blank>does<S2SV_blank>not<S2SV_blank>support<S2SV_blank>discard\" ) ; } if ( ___ratelimit ( & ext4_mount_msg_ratelimit , \"EXT4-fs<S2SV_blank>mount\" ) ) ext4_msg ( sb , KERN_INFO , \"mounted<S2SV_blank>filesystem<S2SV_blank>with%s.<S2SV_blank>\" \"Opts:<S2SV_blank>%.*s%s%s\" , descr , ( int ) sizeof ( sbi -> s_es -> s_mount_opts ) , sbi -> s_es -> s_mount_opts , * sbi -> s_es -> s_mount_opts ? \";<S2SV_blank>\" : \"\" , orig_data ) ; if ( es -> s_error_count ) mod_timer ( & sbi -> s_err_report , jiffies + 300 * HZ ) ; ratelimit_state_init ( & sbi -> s_err_ratelimit_state , 5 * HZ , 10 ) ; ratelimit_state_init ( & sbi -> s_warning_ratelimit_state , 5 * HZ , 10 ) ; ratelimit_state_init ( & sbi -> s_msg_ratelimit_state , 5 * HZ , 10 ) ; kfree ( orig_data ) ; # ifdef CONFIG_EXT4_FS_ENCRYPTION memcpy ( sbi -> key_prefix , EXT4_KEY_DESC_PREFIX , EXT4_KEY_DESC_PREFIX_SIZE ) ; sbi -> key_prefix_size = EXT4_KEY_DESC_PREFIX_SIZE ; # endif return 0 ; cantfind_ext4 : if ( ! silent ) ext4_msg ( sb , KERN_ERR , \"VFS:<S2SV_blank>Can\\'t<S2SV_blank>find<S2SV_blank>ext4<S2SV_blank>filesystem\" ) ; goto failed_mount ; # ifdef CONFIG_QUOTA failed_mount8 : ext4_unregister_sysfs ( sb ) ; # endif failed_mount7 : ext4_unregister_li_request ( sb ) ; failed_mount6 : ext4_mb_release ( sb ) ; if ( sbi -> s_flex_groups ) kvfree ( sbi -> s_flex_groups ) ; percpu_counter_destroy ( & sbi -> s_freeclusters_counter ) ; percpu_counter_destroy ( & sbi -> s_freeinodes_counter ) ; percpu_counter_destroy ( & sbi -> s_dirs_counter ) ; percpu_counter_destroy ( & sbi -> s_dirtyclusters_counter ) ; failed_mount5 : ext4_ext_release ( sb ) ; ext4_release_system_zone ( sb ) ; failed_mount4a : dput ( sb -> s_root ) ; sb -> s_root = NULL ; failed_mount4 : ext4_msg ( sb , KERN_ERR , \"mount<S2SV_blank>failed\" ) ; if ( EXT4_SB ( sb ) -> rsv_conversion_wq ) destroy_workqueue ( EXT4_SB ( sb ) -> rsv_conversion_wq ) ; failed_mount_wq : if ( sbi -> s_mb_cache ) { ext4_xattr_destroy_cache ( sbi -> s_mb_cache ) ; sbi -> s_mb_cache = NULL ; } if ( sbi -> s_journal ) { jbd2_journal_destroy ( sbi -> s_journal ) ; sbi -> s_journal = NULL ; } failed_mount3a : ext4_es_unregister_shrinker ( sbi ) ; failed_mount3 : del_timer_sync ( & sbi -> s_err_report ) ; if ( sbi -> s_mmp_tsk ) kthread_stop ( sbi -> s_mmp_tsk ) ; failed_mount2 : for ( i = 0 ; i < db_count ; i ++ ) brelse ( sbi -> s_group_desc [ i ] ) ; kvfree ( sbi -> s_group_desc ) ; failed_mount : if ( sbi -> s_chksum_driver ) crypto_free_shash ( sbi -> s_chksum_driver ) ; # ifdef CONFIG_QUOTA for ( i = 0 ; i < EXT4_MAXQUOTAS ; i ++ ) kfree ( sbi -> s_qf_names [ i ] ) ; # endif ext4_blkdev_remove ( sbi ) ; brelse ( bh ) ; out_fail : sb -> s_fs_info = NULL ; kfree ( sbi -> s_blockgroup_lock ) ; out_free_base : kfree ( sbi ) ; kfree ( orig_data ) ; return err ? err : ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sb ) ; if ( ext4_has_feature_meta_bg ( sb ) ) { if ( le32_to_cpu ( es -> s_first_meta_bg ) >= db_count ) { ext4_msg ( sb , KERN_WARNING , \"first<S2SV_blank>meta<S2SV_blank>block<S2SV_blank>group<S2SV_blank>too<S2SV_blank>large:<S2SV_blank>%u<S2SV_blank>\" \"(group<S2SV_blank>descriptor<S2SV_blank>block<S2SV_blank>count<S2SV_blank>%u)\" , le32_to_cpu ( es -> s_first_meta_bg ) , db_count ) ; goto failed_mount ; } }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-11608\n\n```\nCWE-476 static void ov518_mode_init_regs ( struct sd * sd ) { struct gspca_dev * gspca_dev = ( struct gspca_dev * ) sd ; int hsegs , vsegs , packet_size ; struct usb_host_interface * alt ; struct usb_interface * intf ; intf = usb_ifnum_to_if ( sd -> gspca_dev . dev , sd -> gspca_dev . iface ) ; alt = usb_altnum_to_altsetting ( intf , sd -> gspca_dev . alt ) ; if ( ! alt ) { gspca_err ( gspca_dev , \"Couldn\\'t<S2SV_blank>get<S2SV_blank>altsetting\\\\n\" ) ; sd -> gspca_dev . usb_err = - EIO ; return ; } <S2SV_StartBug> packet_size = le16_to_cpu ( alt -> endpoint [ 0 ] . desc . wMaxPacketSize ) ; <S2SV_EndBug> ov518_reg_w32 ( sd , R51x_FIFO_PSIZE , packet_size & ~ 7 , 2 ) ; reg_w ( sd , 0x2b , 0 ) ; reg_w ( sd , 0x2c , 0 ) ; reg_w ( sd , 0x2d , 0 ) ; reg_w ( sd , 0x2e , 0 ) ; reg_w ( sd , 0x3b , 0 ) ; reg_w ( sd , 0x3c , 0 ) ; reg_w ( sd , 0x3d , 0 ) ; reg_w ( sd , 0x3e , 0 ) ; if ( sd -> bridge == BRIDGE_OV518 ) { reg_w_mask ( sd , 0x20 , 0x08 , 0x08 ) ; reg_w_mask ( sd , 0x28 , 0x80 , 0xf0 ) ; reg_w_mask ( sd , 0x38 , 0x80 , 0xf0 ) ; } else { reg_w ( sd , 0x28 , 0x80 ) ; reg_w ( sd , 0x38 , 0x80 ) ; } hsegs = sd -> gspca_dev . pixfmt . width / 16 ; vsegs = sd -> gspca_dev . pixfmt . height / 4 ; reg_w ( sd , 0x29 , hsegs ) ; reg_w ( sd , 0x2a , vsegs ) ; reg_w ( sd , 0x39 , hsegs ) ; reg_w ( sd , 0x3a , vsegs ) ; reg_w ( sd , 0x2f , 0x80 ) ; if ( sd -> bridge == BRIDGE_OV518PLUS && sd -> revision == 0 && sd -> sensor == SEN_OV7620AE ) sd -> clockdiv = 0 ; else sd -> clockdiv = 1 ; reg_w ( sd , 0x51 , 0x04 ) ; reg_w ( sd , 0x22 , 0x18 ) ; reg_w ( sd , 0x23 , 0xff ) ; if ( sd -> bridge == BRIDGE_OV518PLUS ) { switch ( sd -> sensor ) { case SEN_OV7620AE : if ( sd -> revision > 0 && sd -> gspca_dev . pixfmt . width == 640 ) { reg_w ( sd , 0x20 , 0x60 ) ; reg_w ( sd , 0x21 , 0x1f ) ; } else { reg_w ( sd , 0x20 , 0x00 ) ; reg_w ( sd , 0x21 , 0x19 ) ; } break ; case SEN_OV7620 : reg_w ( sd , 0x20 , 0x00 ) ; reg_w ( sd , 0x21 , 0x19 ) ; break ; default : reg_w ( sd , 0x21 , 0x19 ) ; } } else reg_w ( sd , 0x71 , 0x17 ) ; i2c_w ( sd , 0x54 , 0x23 ) ; reg_w ( sd , 0x2f , 0x80 ) ; if ( sd -> bridge == BRIDGE_OV518PLUS ) { reg_w ( sd , 0x24 , 0x94 ) ; reg_w ( sd , 0x25 , 0x90 ) ; ov518_reg_w32 ( sd , 0xc4 , 400 , 2 ) ; ov518_reg_w32 ( sd , 0xc6 , 540 , 2 ) ; ov518_reg_w32 ( sd , 0xc7 , 540 , 2 ) ; ov518_reg_w32 ( sd , 0xc8 , 108 , 2 ) ; ov518_reg_w32 ( sd , 0xca , 131098 , 3 ) ; ov518_reg_w32 ( sd , 0xcb , 532 , 2 ) ; ov518_reg_w32 ( sd , 0xcc , 2400 , 2 ) ; ov518_reg_w32 ( sd , 0xcd , 32 , 2 ) ; ov518_reg_w32 ( sd , 0xce , 608 , 2 ) ; } else { reg_w ( sd , 0x24 , 0x9f ) ; reg_w ( sd , 0x25 , 0x90 ) ; ov518_reg_w32 ( sd , 0xc4 , 400 , 2 ) ; ov518_reg_w32 ( sd , 0xc6 , 381 , 2 ) ; ov518_reg_w32 ( sd , 0xc7 , 381 , 2 ) ; ov518_reg_w32 ( sd , 0xc8 , 128 , 2 ) ; ov518_reg_w32 ( sd , 0xca , 183331 , 3 ) ; ov518_reg_w32 ( sd , 0xcb , 746 , 2 ) ; ov518_reg_w32 ( sd , 0xcc , 1750 , 2 ) ; ov518_reg_w32 ( sd , 0xcd , 45 , 2 ) ; ov518_reg_w32 ( sd , 0xce , 851 , 2 ) ; } reg_w ( sd , 0x2f , 0x80 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> return ; } if ( alt -> desc . bNumEndpoints < 1 ) { sd -> gspca_dev . usb_err = - ENODEV ; return ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 int touch_file ( const char * path , bool parents , usec_t stamp , uid_t uid , gid_t gid , mode_t mode ) { _cleanup_close_ int fd ; int r ; assert ( path ) ; if ( parents ) mkdir_parents ( path , 0755 ) ; <S2SV_StartBug> fd = open ( path , O_WRONLY | O_CREAT | O_CLOEXEC | O_NOCTTY , mode > 0 ? mode : 0644 ) ; <S2SV_EndBug> if ( fd < 0 ) return - errno ; if ( mode != MODE_INVALID ) { r = fchmod ( fd , mode ) ; if ( r < 0 ) return - errno ; } if ( uid != UID_INVALID || gid != GID_INVALID ) { r = fchown ( fd , uid , gid ) ; if ( r < 0 ) return - errno ; } if ( stamp != USEC_INFINITY ) { struct timespec ts [ 2 ] ; timespec_store ( & ts [ 0 ] , stamp ) ; ts [ 1 ] = ts [ 0 ] ; r = futimens ( fd , ts ) ; } else r = futimens ( fd , NULL ) ; if ( r < 0 ) return - errno ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> | O_NOCTTY , ( mode == 0 || mode == MODE_INVALID ) ? 0644 : mode <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4112\n\n```\nCWE-264 static void _isdn_setup ( struct net_device * dev ) { isdn_net_local * lp = netdev_priv ( dev ) ; ether_setup ( dev ) ; dev -> flags = IFF_NOARP | IFF_POINTOPOINT ; <S2SV_StartBug> dev -> header_ops = NULL ; <S2SV_EndBug> dev -> netdev_ops = & isdn_netdev_ops ; dev -> tx_queue_len = 30 ; lp -> p_encap = ISDN_NET_ENCAP_RAWIP ; lp -> magic = ISDN_NET_MAGIC ; lp -> last = lp ; lp -> next = lp ; lp -> isdn_device = - 1 ; lp -> isdn_channel = - 1 ; lp -> pre_device = - 1 ; lp -> pre_channel = - 1 ; lp -> exclusive = - 1 ; lp -> ppp_slot = - 1 ; lp -> pppbind = - 1 ; skb_queue_head_init ( & lp -> super_tx_queue ) ; lp -> l2_proto = ISDN_PROTO_L2_X75I ; lp -> l3_proto = ISDN_PROTO_L3_TRANS ; lp -> triggercps = 6000 ; lp -> slavedelay = 10 * HZ ; lp -> hupflags = ISDN_INHUP ; lp -> onhtime = 10 ; lp -> dialmax = 1 ; lp -> flags = ISDN_NET_CBHUP | ISDN_NET_DM_MANUAL ; lp -> cbdelay = 25 ; lp -> dialtimeout = - 1 ; lp -> dialwait = 5 * HZ ; lp -> dialstarted = 0 ; lp -> dialwait_timer = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; dev -> priv_flags &= ~ IFF_TX_SKB_SHARING ; dev ->\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0037\n\n```\nCWE-200 static int raptor_rdfxml_parse_start ( raptor_parser * rdf_parser ) { raptor_uri * uri = rdf_parser -> base_uri ; raptor_rdfxml_parser * rdf_xml_parser ; rdf_xml_parser = ( raptor_rdfxml_parser * ) rdf_parser -> context ; if ( ! uri ) return 1 ; raptor_sax2_set_option ( rdf_xml_parser -> sax2 , RAPTOR_OPTION_NORMALIZE_LANGUAGE , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_NORMALIZE_LANGUAGE ) ) ; raptor_sax2_set_option ( rdf_xml_parser -> sax2 , RAPTOR_OPTION_NO_NET , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_NO_NET ) ) ; raptor_sax2_set_option ( rdf_xml_parser -> sax2 , RAPTOR_OPTION_NO_FILE , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_NO_FILE ) ) ; <S2SV_StartBug> if ( rdf_parser -> uri_filter ) <S2SV_EndBug> raptor_sax2_set_uri_filter ( rdf_xml_parser -> sax2 , rdf_parser -> uri_filter , rdf_parser -> uri_filter_user_data ) ; raptor_sax2_parse_start ( rdf_xml_parser -> sax2 , uri ) ; if ( rdf_xml_parser -> id_set ) { raptor_free_id_set ( rdf_xml_parser -> id_set ) ; rdf_xml_parser -> id_set = NULL ; } if ( RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_CHECK_RDF_ID ) ) { rdf_xml_parser -> id_set = raptor_new_id_set ( rdf_parser -> world ) ; if ( ! rdf_xml_parser -> id_set ) return 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ) ; raptor_sax2_set_option ( rdf_xml_parser -> sax2 , RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES , NULL , RAPTOR_OPTIONS_GET_NUMERIC ( rdf_parser , RAPTOR_OPTION_LOAD_EXTERNAL_ENTITIES ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-7542\n\n```\nCWE-190 int ip6_find_1stfragopt ( struct sk_buff * skb , u8 * * nexthdr ) { <S2SV_StartBug> u16 offset = sizeof ( struct ipv6hdr ) ; <S2SV_EndBug> unsigned int packet_len = skb_tail_pointer ( skb ) - skb_network_header ( skb ) ; int found_rhdr = 0 ; * nexthdr = & ipv6_hdr ( skb ) -> nexthdr ; while ( offset <= packet_len ) { struct ipv6_opt_hdr * exthdr ; <S2SV_StartBug> switch ( * * nexthdr ) { <S2SV_EndBug> case NEXTHDR_HOP : break ; case NEXTHDR_ROUTING : found_rhdr = 1 ; break ; case NEXTHDR_DEST : # if IS_ENABLED ( CONFIG_IPV6_MIP6 ) if ( ipv6_find_tlv ( skb , offset , IPV6_TLV_HAO ) >= 0 ) break ; # endif if ( found_rhdr ) return offset ; break ; default : return offset ; } if ( offset + sizeof ( struct ipv6_opt_hdr ) > packet_len ) return - EINVAL ; exthdr = ( struct ipv6_opt_hdr * ) ( skb_network_header ( skb ) + offset ) ; <S2SV_StartBug> offset += ipv6_optlen ( exthdr ) ; <S2SV_EndBug> * nexthdr = & exthdr -> nexthdr ; } return - EINVAL ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> nexthdr ) { unsigned int <S2SV_ModEnd> offset = sizeof <S2SV_ModStart> * exthdr ; unsigned int len ; <S2SV_ModStart> offset ) ; len = ipv6_optlen ( exthdr ) ; if ( len + offset >= IPV6_MAXPLEN ) return - EINVAL ; offset += len <S2SV_ModEnd> ; * nexthdr\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-35605\n\n```\nCWE-000 static Image * handle_add_command ( GraphicsManager * self , const GraphicsCommand * g , const uint8_t * payload , bool * is_dirty , uint32_t iid ) { # define ABRT ( code , ... ) { set_add_response ( # code , __VA_ARGS__ ) ; self -> loading_image = 0 ; if ( img ) img -> data_loaded = false ; return NULL ; } # define MAX_DATA_SZ ( 4u * 100000000u ) has_add_respose = false ; bool existing , init_img = true ; Image * img = NULL ; unsigned char tt = g -> transmission_type ? g -> transmission_type : 'd' ; enum FORMATS { RGB = 24 , RGBA = 32 , PNG = 100 } ; uint32_t fmt = g -> format ? g -> format : RGBA ; if ( tt == 'd' && self -> loading_image ) init_img = false ; if ( init_img ) { self -> last_init_graphics_command = * g ; self -> last_init_graphics_command . id = iid ; self -> loading_image = 0 ; if ( g -> data_width > 10000 || g -> data_height > 10000 ) ABRT ( EINVAL , \"Image<S2SV_blank>too<S2SV_blank>large\" ) ; remove_images ( self , add_trim_predicate , 0 ) ; img = find_or_create_image ( self , iid , & existing ) ; if ( existing ) { free_load_data ( & img -> load_data ) ; img -> data_loaded = false ; free_refs_data ( img ) ; * is_dirty = true ; self -> layers_dirty = true ; } else { img -> internal_id = internal_id_counter ++ ; img -> client_id = iid ; } img -> atime = monotonic ( ) ; img -> used_storage = 0 ; img -> width = g -> data_width ; img -> height = g -> data_height ; switch ( fmt ) { case PNG : if ( g -> data_sz > MAX_DATA_SZ ) ABRT ( EINVAL , \"PNG<S2SV_blank>data<S2SV_blank>size<S2SV_blank>too<S2SV_blank>large\" ) ; img -> load_data . is_4byte_aligned = true ; img -> load_data . is_opaque = false ; img -> load_data . data_sz = g -> data_sz ? g -> data_sz : 1024 * 100 ; break ; case RGB : case RGBA : img -> load_data . data_sz = ( size_t ) g -> data_width * g -> data_height * ( fmt / 8 ) ; if ( ! img -> load_data . data_sz ) ABRT ( EINVAL , \"Zero<S2SV_blank>width/height<S2SV_blank>not<S2SV_blank>allowed\" ) ; img -> load_data . is_4byte_aligned = fmt == RGBA || ( img -> width % 4 == 0 ) ; img -> load_data . is_opaque = fmt == RGB ; break ; default : ABRT ( EINVAL , \"Unknown<S2SV_blank>image<S2SV_blank>format:<S2SV_blank>%u\" , fmt ) ; } if ( tt == 'd' ) { if ( g -> more ) self -> loading_image = img -> internal_id ; img -> load_data . buf_capacity = img -> load_data . data_sz + ( g -> compressed ? 1024 : 10 ) ; img -> load_data . buf = malloc ( img -> load_data . buf_capacity ) ; img -> load_data . buf_used = 0 ; if ( img -> load_data . buf == NULL ) { ABRT ( ENOMEM , \"Out<S2SV_blank>of<S2SV_blank>memory\" ) ; img -> load_data . buf_capacity = 0 ; img -> load_data . buf_used = 0 ; } } } else { self -> last_init_graphics_command . more = g -> more ; self -> last_init_graphics_command . payload_sz = g -> payload_sz ; g = & self -> last_init_graphics_command ; tt = g -> transmission_type ? g -> transmission_type : 'd' ; fmt = g -> format ? g -> format : RGBA ; img = img_by_internal_id ( self , self -> loading_image ) ; if ( img == NULL ) { self -> loading_image = 0 ; ABRT ( EILSEQ , \"More<S2SV_blank>payload<S2SV_blank>loading<S2SV_blank>refers<S2SV_blank>to<S2SV_blank>non-existent<S2SV_blank>image\" ) ; } } int fd ; static char fname [ 2056 ] = { 0 } ; switch ( tt ) { case 'd' : if ( img -> load_data . buf_capacity - img -> load_data . buf_used < g -> payload_sz ) { if ( img -> load_data . buf_used + g -> payload_sz > MAX_DATA_SZ || fmt != PNG ) ABRT ( EFBIG , \"Too<S2SV_blank>much<S2SV_blank>data\" ) ; img -> load_data . buf_capacity = MIN ( 2 * img -> load_data . buf_capacity , MAX_DATA_SZ ) ; img -> load_data . buf = realloc ( img -> load_data . buf , img -> load_data . buf_capacity ) ; if ( img -> load_data . buf == NULL ) { ABRT ( ENOMEM , \"Out<S2SV_blank>of<S2SV_blank>memory\" ) ; img -> load_data . buf_capacity = 0 ; img -> load_data . buf_used = 0 ; } } memcpy ( img -> load_data . buf + img -> load_data . buf_used , payload , g -> payload_sz ) ; img -> load_data . buf_used += g -> payload_sz ; if ( ! g -> more ) { img -> data_loaded = true ; self -> loading_image = 0 ; } break ; case 'f' : case 't' : case 's' : if ( g -> payload_sz > 2048 ) ABRT ( EINVAL , \"Filename<S2SV_blank>too<S2SV_blank>long\" ) ; snprintf ( fname , sizeof ( fname ) / sizeof ( fname [ 0 ] ) , \"%.*s\" , ( int ) g -> payload_sz , payload ) ; if ( tt == 's' ) fd = shm_open ( fname , O_RDONLY , 0 ) ; else fd = open ( fname , O_CLOEXEC | O_RDONLY ) ; <S2SV_StartBug> if ( fd == - 1 ) ABRT ( EBADF , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>file<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>graphics<S2SV_blank>transmission<S2SV_blank>with<S2SV_blank>error:<S2SV_blank>[%d]<S2SV_blank>%s\" , fname , errno , strerror ( errno ) ) ; <S2SV_EndBug> img -> data_loaded = mmap_img_file ( self , img , fd , g -> data_sz , g -> data_offset ) ; safe_close ( fd , __FILE__ , __LINE__ ) ; if ( tt == 't' ) { if ( global_state . boss ) { call_boss ( safe_delete_temp_file , \"s\" , fname ) ; } else unlink ( fname ) ; } else if ( tt == 's' ) shm_unlink ( fname ) ; break ; default : ABRT ( EINVAL , \"Unknown<S2SV_blank>transmission<S2SV_blank>type:<S2SV_blank>%c\" , g -> transmission_type ) ; } if ( ! img -> data_loaded ) return NULL ; self -> loading_image = 0 ; bool needs_processing = g -> compressed || fmt == PNG ; if ( needs_processing ) { uint8_t * buf ; size_t bufsz ; # define IB { if ( img -> load_data . buf ) { buf = img -> load_data . buf ; bufsz = img -> load_data . buf_used ; } else { buf = img -> load_data . mapped_file ; bufsz = img -> load_data . mapped_file_sz ; } } switch ( g -> compressed ) { case 'z' : IB ; if ( ! inflate_zlib ( self , img , buf , bufsz ) ) { img -> data_loaded = false ; return NULL ; } break ; case 0 : break ; default : ABRT ( EINVAL , \"Unknown<S2SV_blank>image<S2SV_blank>compression:<S2SV_blank>%c\" , g -> compressed ) ; } switch ( fmt ) { case PNG : IB ; if ( ! inflate_png ( self , img , buf , bufsz ) ) { img -> data_loaded = false ; return NULL ; } break ; default : break ; } # undef IB img -> load_data . data = img -> load_data . buf ; if ( img -> load_data . buf_used < img -> load_data . data_sz ) { ABRT ( ENODATA , \"Insufficient<S2SV_blank>image<S2SV_blank>data:<S2SV_blank>%zu<S2SV_blank><<S2SV_blank>%zu\" , img -> load_data . buf_used , img -> load_data . data_sz ) ; } if ( img -> load_data . mapped_file ) { munmap ( img -> load_data . mapped_file , img -> load_data . mapped_file_sz ) ; img -> load_data . mapped_file = NULL ; img -> load_data . mapped_file_sz = 0 ; } } else { if ( tt == 'd' ) { if ( img -> load_data . buf_used < img -> load_data . data_sz ) { ABRT ( ENODATA , \"Insufficient<S2SV_blank>image<S2SV_blank>data:<S2SV_blank>%zu<S2SV_blank><<S2SV_blank>%zu\" , img -> load_data . buf_used , img -> load_data . data_sz ) ; } else img -> load_data . data = img -> load_data . buf ; } else { if ( img -> load_data . mapped_file_sz < img -> load_data . data_sz ) { ABRT ( ENODATA , \"Insufficient<S2SV_blank>image<S2SV_blank>data:<S2SV_blank>%zu<S2SV_blank><<S2SV_blank>%zu\" , img -> load_data . mapped_file_sz , img -> load_data . data_sz ) ; } else img -> load_data . data = img -> load_data . mapped_file ; } } size_t required_sz = ( size_t ) ( img -> load_data . is_opaque ? 3 : 4 ) * img -> width * img -> height ; if ( img -> load_data . data_sz != required_sz ) ABRT ( EINVAL , \"Image<S2SV_blank>dimensions:<S2SV_blank>%ux%u<S2SV_blank>do<S2SV_blank>not<S2SV_blank>match<S2SV_blank>data<S2SV_blank>size:<S2SV_blank>%zu,<S2SV_blank>expected<S2SV_blank>size:<S2SV_blank>%zu\" , img -> width , img -> height , img -> load_data . data_sz , required_sz ) ; if ( LIKELY ( img -> data_loaded && send_to_gpu ) ) { send_image_to_gpu ( & img -> texture_id , img -> load_data . data , img -> width , img -> height , img -> load_data . is_opaque , img -> load_data . is_4byte_aligned , false , REPEAT_CLAMP ) ; free_load_data ( & img -> load_data ) ; self -> used_storage += required_sz ; img -> used_storage = required_sz ; } return img ; # undef MAX_DATA_SZ # undef ABRT }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( EBADF , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>file<S2SV_blank>for<S2SV_blank>graphics<S2SV_blank>transmission<S2SV_blank>with<S2SV_blank>error:<S2SV_blank>[%d]<S2SV_blank>%s\" <S2SV_ModEnd> , errno ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5244\n\n```\nCWE-200 void rds_inc_info_copy ( struct rds_incoming * inc , struct rds_info_iterator * iter , __be32 saddr , __be32 daddr , int flip ) { struct rds_info_message minfo ; minfo . seq = be64_to_cpu ( inc -> i_hdr . h_sequence ) ; minfo . len = be32_to_cpu ( inc -> i_hdr . h_len ) ; if ( flip ) { minfo . laddr = daddr ; minfo . faddr = saddr ; minfo . lport = inc -> i_hdr . h_dport ; minfo . fport = inc -> i_hdr . h_sport ; } else { minfo . laddr = saddr ; minfo . faddr = daddr ; minfo . lport = inc -> i_hdr . h_sport ; minfo . fport = inc -> i_hdr . h_dport ; } <S2SV_StartBug> rds_info_copy ( iter , & minfo , sizeof ( minfo ) ) ; <S2SV_EndBug> }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> h_dport ; } minfo . flags = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-362(竞争条件)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-3552\n\n```\nCWE-362 static int ip_setup_cork ( struct sock * sk , struct inet_cork * cork , struct ipcm_cookie * ipc , struct rtable * * rtp ) { struct inet_sock * inet = inet_sk ( sk ) ; <S2SV_StartBug> struct ip_options * opt ; <S2SV_EndBug> struct rtable * rt ; opt = ipc -> opt ; if ( opt ) { if ( cork -> opt == NULL ) { cork -> opt = kmalloc ( sizeof ( struct ip_options ) + 40 , sk -> sk_allocation ) ; if ( unlikely ( cork -> opt == NULL ) ) return - ENOBUFS ; } <S2SV_StartBug> memcpy ( cork -> opt , opt , sizeof ( struct ip_options ) + opt -> optlen ) ; <S2SV_EndBug> cork -> flags |= IPCORK_OPT ; cork -> addr = ipc -> addr ; } rt = * rtp ; if ( unlikely ( ! rt ) ) return - EFAULT ; * rtp = NULL ; cork -> fragsize = inet -> pmtudisc == IP_PMTUDISC_PROBE ? rt -> dst . dev -> mtu : dst_mtu ( rt -> dst . path ) ; cork -> dst = & rt -> dst ; cork -> length = 0 ; cork -> tx_flags = ipc -> tx_flags ; cork -> page = NULL ; cork -> off = 0 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) ; struct ip_options_rcu <S2SV_ModEnd> * opt ; <S2SV_ModStart> -> opt , & opt -> <S2SV_ModStart> + opt -> opt .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-22(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-3602\n\n```\nCWE-22 int set_interface_var ( const char * iface , const char * var , const char * name , uint32_t val ) { FILE * fp ; char spath [ 64 + IFNAMSIZ ] ; <S2SV_StartBug> if ( snprintf ( spath , sizeof ( spath ) , var , iface ) >= sizeof ( spath ) ) <S2SV_EndBug> return - 1 ; if ( access ( spath , F_OK ) != 0 ) return - 1 ; fp = fopen ( spath , \"w\" ) ; if ( ! fp ) { if ( name ) flog ( LOG_ERR , \"failed<S2SV_blank>to<S2SV_blank>set<S2SV_blank>%s<S2SV_blank>(%u)<S2SV_blank>for<S2SV_blank>%s:<S2SV_blank>%s\" , name , val , iface , strerror ( errno ) ) ; return - 1 ; } fprintf ( fp , \"%u\" , val ) ; fclose ( fp ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> sizeof ( spath ) ) return - 1 ; if ( strstr ( name , \"..\" ) || strchr ( name , '/'\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6537\n\n```\nCWE-200 static void copy_to_user_policy ( struct xfrm_policy * xp , struct xfrm_userpolicy_info * p , int dir ) <S2SV_StartBug> { <S2SV_EndBug> memcpy ( & p -> sel , & xp -> selector , sizeof ( p -> sel ) ) ; memcpy ( & p -> lft , & xp -> lft , sizeof ( p -> lft ) ) ; memcpy ( & p -> curlft , & xp -> curlft , sizeof ( p -> curlft ) ) ; p -> priority = xp -> priority ; p -> index = xp -> index ; p -> sel . family = xp -> family ; p -> dir = dir ; p -> action = xp -> action ; p -> flags = xp -> flags ; p -> share = XFRM_SHARE_ANY ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dir ) { memset ( p , 0 , sizeof ( * p ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10156\n\n```\nCWE-264 static void setup_test_dir ( char * tmp_dir , const char * files , ... ) { va_list ap ; assert_se ( mkdtemp ( tmp_dir ) != NULL ) ; va_start ( ap , files ) ; while ( files != NULL ) { _cleanup_free_ char * path = strappend ( tmp_dir , files ) ; <S2SV_StartBug> assert_se ( touch_file ( path , true , USEC_INFINITY , UID_INVALID , GID_INVALID , 0 ) == 0 ) ; <S2SV_EndBug> files = va_arg ( ap , const char * ) ; } va_end ( ap ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , GID_INVALID , MODE_INVALID <S2SV_ModEnd> ) == 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static INLINE void add_token_no_extra ( TOKENEXTRA * * t , <S2SV_StartBug> const vp9_prob * context_tree , <S2SV_EndBug> uint8_t token , uint8_t skip_eob_node , unsigned int * counts ) { ( * t ) -> token = token ; ( * t ) -> context_tree = context_tree ; ( * t ) -> skip_eob_node = skip_eob_node ; ( * t ) ++ ; ++ counts [ token ] ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> t , const vpx_prob <S2SV_ModEnd> * context_tree ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-19854\n\n```\nCWE-000 static int crypto_report_one ( struct crypto_alg * alg , struct crypto_user_alg * ualg , struct sk_buff * skb ) { <S2SV_StartBug> strlcpy ( ualg -> cru_name , alg -> cra_name , sizeof ( ualg -> cru_name ) ) ; <S2SV_EndBug> <S2SV_StartBug> strlcpy ( ualg -> cru_driver_name , alg -> cra_driver_name , <S2SV_EndBug> sizeof ( ualg -> cru_driver_name ) ) ; <S2SV_StartBug> strlcpy ( ualg -> cru_module_name , module_name ( alg -> cra_module ) , <S2SV_EndBug> sizeof ( ualg -> cru_module_name ) ) ; ualg -> cru_type = 0 ; ualg -> cru_mask = 0 ; ualg -> cru_flags = alg -> cra_flags ; ualg -> cru_refcnt = refcount_read ( & alg -> cra_refcnt ) ; if ( nla_put_u32 ( skb , CRYPTOCFGA_PRIORITY_VAL , alg -> cra_priority ) ) goto nla_put_failure ; if ( alg -> cra_flags & CRYPTO_ALG_LARVAL ) { struct crypto_report_larval rl ; <S2SV_StartBug> strlcpy ( rl . type , \"larval\" , sizeof ( rl . type ) ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_LARVAL , sizeof ( struct crypto_report_larval ) , & rl ) ) goto nla_put_failure ; goto out ; } if ( alg -> cra_type && alg -> cra_type -> report ) { if ( alg -> cra_type -> report ( skb , alg ) ) goto nla_put_failure ; goto out ; } switch ( alg -> cra_flags & ( CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL ) ) { case CRYPTO_ALG_TYPE_CIPHER : if ( crypto_report_cipher ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_COMPRESS : if ( crypto_report_comp ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_ACOMPRESS : if ( crypto_report_acomp ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_AKCIPHER : if ( crypto_report_akcipher ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_KPP : if ( crypto_report_kpp ( skb , alg ) ) goto nla_put_failure ; break ; } out : return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) { strncpy <S2SV_ModEnd> ( ualg -> <S2SV_ModStart> ) ) ; strncpy <S2SV_ModEnd> ( ualg -> <S2SV_ModStart> ) ) ; strncpy <S2SV_ModEnd> ( ualg -> <S2SV_ModStart> crypto_report_larval rl ; strncpy <S2SV_ModEnd> ( rl .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-8655\n\n```\nCWE-416 static int packet_setsockopt ( struct socket * sock , int level , int optname , char __user * optval , unsigned int optlen ) { struct sock * sk = sock -> sk ; struct packet_sock * po = pkt_sk ( sk ) ; int ret ; if ( level != SOL_PACKET ) return - ENOPROTOOPT ; switch ( optname ) { case PACKET_ADD_MEMBERSHIP : case PACKET_DROP_MEMBERSHIP : { struct packet_mreq_max mreq ; int len = optlen ; memset ( & mreq , 0 , sizeof ( mreq ) ) ; if ( len < sizeof ( struct packet_mreq ) ) return - EINVAL ; if ( len > sizeof ( mreq ) ) len = sizeof ( mreq ) ; if ( copy_from_user ( & mreq , optval , len ) ) return - EFAULT ; if ( len < ( mreq . mr_alen + offsetof ( struct packet_mreq , mr_address ) ) ) return - EINVAL ; if ( optname == PACKET_ADD_MEMBERSHIP ) ret = packet_mc_add ( sk , & mreq ) ; else ret = packet_mc_drop ( sk , & mreq ) ; return ret ; } case PACKET_RX_RING : case PACKET_TX_RING : { union tpacket_req_u req_u ; int len ; switch ( po -> tp_version ) { case TPACKET_V1 : case TPACKET_V2 : len = sizeof ( req_u . req ) ; break ; case TPACKET_V3 : default : len = sizeof ( req_u . req3 ) ; break ; } if ( optlen < len ) return - EINVAL ; if ( copy_from_user ( & req_u . req , optval , len ) ) return - EFAULT ; return packet_set_ring ( sk , & req_u , 0 , optname == PACKET_TX_RING ) ; } case PACKET_COPY_THRESH : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; pkt_sk ( sk ) -> copy_thresh = val ; return 0 ; } case PACKET_VERSION : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; <S2SV_StartBug> if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) <S2SV_EndBug> <S2SV_StartBug> return - EBUSY ; <S2SV_EndBug> <S2SV_StartBug> if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) <S2SV_EndBug> return - EFAULT ; switch ( val ) { case TPACKET_V1 : case TPACKET_V2 : case TPACKET_V3 : po -> tp_version = val ; <S2SV_StartBug> return 0 ; <S2SV_EndBug> default : return - EINVAL ; } } case PACKET_RESERVE : { unsigned int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) return - EBUSY ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> tp_reserve = val ; return 0 ; } case PACKET_LOSS : { unsigned int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) return - EBUSY ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> tp_loss = ! ! val ; return 0 ; } case PACKET_AUXDATA : { int val ; if ( optlen < sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> auxdata = ! ! val ; return 0 ; } case PACKET_ORIGDEV : { int val ; if ( optlen < sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> origdev = ! ! val ; return 0 ; } case PACKET_VNET_HDR : { int val ; if ( sock -> type != SOCK_RAW ) return - EINVAL ; if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) return - EBUSY ; if ( optlen < sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> has_vnet_hdr = ! ! val ; return 0 ; } case PACKET_TIMESTAMP : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> tp_tstamp = val ; return 0 ; } case PACKET_FANOUT : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; return fanout_add ( sk , val & 0xffff , val >> 16 ) ; } case PACKET_FANOUT_DATA : { if ( ! po -> fanout ) return - EINVAL ; return fanout_set_data ( po , optval , optlen ) ; } case PACKET_TX_HAS_OFF : { unsigned int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( po -> rx_ring . pg_vec || po -> tx_ring . pg_vec ) return - EBUSY ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> tp_tx_has_off = ! ! val ; return 0 ; } case PACKET_QDISC_BYPASS : { int val ; if ( optlen != sizeof ( val ) ) return - EINVAL ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; po -> xmit = val ? packet_direct_xmit : dev_queue_xmit ; return 0 ; } default : return - ENOPROTOOPT ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( copy_from_user ( & val , optval , sizeof ( val ) ) ) return - EFAULT ; switch ( val ) { case TPACKET_V1 : case TPACKET_V2 : case TPACKET_V3 : break ; default : return - EINVAL ; } lock_sock ( sk ) ; if ( <S2SV_ModStart> . pg_vec ) { ret = <S2SV_ModEnd> - EBUSY ; <S2SV_ModStart> - EBUSY ; } else { <S2SV_ModEnd> po -> tp_version <S2SV_ModStart> = val ; ret = 0 ; } release_sock ( sk ) ; return ret ; <S2SV_ModEnd> } case PACKET_RESERVE\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5354\n\n```\nCWE-476 static int dissect_u3v ( tvbuff_t * tvb , packet_info * pinfo , proto_tree * tree , void * data ) { gint offset = 0 ; proto_tree * u3v_tree = NULL , * ccd_tree_flag , * u3v_telegram_tree = NULL , * ccd_tree = NULL ; gint data_length = 0 ; gint req_id = 0 ; gint command_id = - 1 ; gint status = 0 ; guint prefix = 0 ; proto_item * ti = NULL ; proto_item * item = NULL ; const char * command_string ; usb_conv_info_t * usb_conv_info ; gint stream_detected = FALSE ; gint control_detected = FALSE ; u3v_conv_info_t * u3v_conv_info = NULL ; gencp_transaction_t * gencp_trans = NULL ; usb_conv_info = ( usb_conv_info_t * ) data ; u3v_conv_info = ( u3v_conv_info_t * ) usb_conv_info -> class_data ; if ( ! u3v_conv_info ) { u3v_conv_info = wmem_new0 ( wmem_file_scope ( ) , u3v_conv_info_t ) ; <S2SV_StartBug> usb_conv_info -> class_data = u3v_conv_info ; <S2SV_EndBug> } prefix = tvb_get_letohl ( tvb , 0 ) ; if ( ( tvb_reported_length ( tvb ) >= 4 ) && ( ( U3V_CONTROL_PREFIX == prefix ) || ( U3V_EVENT_PREFIX == prefix ) ) ) { control_detected = TRUE ; } if ( ( ( tvb_reported_length ( tvb ) >= 4 ) && ( ( U3V_STREAM_LEADER_PREFIX == prefix ) || ( U3V_STREAM_TRAILER_PREFIX == prefix ) ) ) || ( usb_conv_info -> endpoint == u3v_conv_info -> ep_stream ) ) { stream_detected = TRUE ; } if ( control_detected || stream_detected ) { if ( usb_conv_info -> interfaceClass == IF_CLASS_UNKNOWN && usb_conv_info -> interfaceSubclass == IF_SUBCLASS_UNKNOWN ) { usb_conv_info -> interfaceClass = IF_CLASS_MISCELLANEOUS ; usb_conv_info -> interfaceSubclass = IF_SUBCLASS_MISC_U3V ; } } if ( control_detected ) { col_set_str ( pinfo -> cinfo , COL_PROTOCOL , \"U3V\" ) ; col_clear ( pinfo -> cinfo , COL_INFO ) ; ti = proto_tree_add_item ( tree , proto_u3v , tvb , offset , - 1 , ENC_NA ) ; u3v_tree = proto_item_add_subtree ( ti , ett_u3v ) ; prefix = tvb_get_letohl ( tvb , offset ) ; command_id = tvb_get_letohs ( tvb , offset + 6 ) ; if ( ( prefix == U3V_CONTROL_PREFIX || prefix == U3V_EVENT_PREFIX ) && ( ( command_id % 2 ) == 0 ) ) { command_string = val_to_str ( command_id , command_names , \"Unknown<S2SV_blank>Command<S2SV_blank>(0x%x)\" ) ; item = proto_tree_add_item ( u3v_tree , hf_u3v_ccd_cmd , tvb , offset , 8 , ENC_NA ) ; proto_item_append_text ( item , \":<S2SV_blank>%s\" , command_string ) ; ccd_tree = proto_item_add_subtree ( item , ett_u3v_cmd ) ; proto_tree_add_item ( ccd_tree , hf_u3v_gencp_prefix , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; item = proto_tree_add_item ( ccd_tree , hf_u3v_flag , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; ccd_tree_flag = proto_item_add_subtree ( item , ett_u3v_flags ) ; proto_tree_add_item ( ccd_tree_flag , hf_u3v_acknowledge_required_flag , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; offset += 2 ; col_append_fstr ( pinfo -> cinfo , COL_INFO , \"><S2SV_blank>%s<S2SV_blank>\" , command_string ) ; } else if ( prefix == U3V_CONTROL_PREFIX && ( ( command_id % 2 ) == 1 ) ) { command_string = val_to_str ( command_id , command_names , \"Unknown<S2SV_blank>Acknowledge<S2SV_blank>(0x%x)\" ) ; item = proto_tree_add_item ( u3v_tree , hf_u3v_ccd_ack , tvb , offset , 8 , ENC_NA ) ; proto_item_append_text ( item , \":<S2SV_blank>%s\" , command_string ) ; ccd_tree = proto_item_add_subtree ( item , ett_u3v_ack ) ; proto_tree_add_item ( ccd_tree , hf_u3v_gencp_prefix , tvb , offset , 4 , ENC_LITTLE_ENDIAN ) ; offset += 4 ; proto_tree_add_item ( ccd_tree , hf_u3v_status , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; status = tvb_get_letohs ( tvb , offset ) ; offset += 2 ; col_append_fstr ( pinfo -> cinfo , COL_INFO , \"<<S2SV_blank>%s<S2SV_blank>%s\" , command_string , val_to_str ( status , status_names_short , \"Unknown<S2SV_blank>status<S2SV_blank>(0x%04X)\" ) ) ; } else { return 0 ; } proto_tree_add_item ( ccd_tree , hf_u3v_command_id , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; offset += 2 ; proto_tree_add_item ( ccd_tree , hf_u3v_length , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; data_length = tvb_get_letohs ( tvb , offset ) ; offset += 2 ; proto_tree_add_item ( ccd_tree , hf_u3v_request_id , tvb , offset , 2 , ENC_LITTLE_ENDIAN ) ; req_id = tvb_get_letohs ( tvb , offset ) ; offset += 2 ; u3v_telegram_tree = proto_item_add_subtree ( u3v_tree , ett_u3v ) ; if ( ! PINFO_FD_VISITED ( pinfo ) ) { if ( ( command_id % 2 ) == 0 ) { gencp_trans = wmem_new ( wmem_file_scope ( ) , gencp_transaction_t ) ; gencp_trans -> cmd_frame = pinfo -> fd -> num ; gencp_trans -> ack_frame = 0 ; gencp_trans -> cmd_time = pinfo -> fd -> abs_ts ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_u3v , req_id , gencp_trans ) ; u3v_conv_info -> trans_info = gencp_trans ; } else { gencp_trans = u3v_conv_info -> trans_info ; if ( gencp_trans ) { gencp_trans -> ack_frame = pinfo -> fd -> num ; p_add_proto_data ( wmem_file_scope ( ) , pinfo , proto_u3v , req_id , gencp_trans ) ; } } } else { gencp_trans = ( gencp_transaction_t * ) p_get_proto_data ( wmem_file_scope ( ) , pinfo , proto_u3v , req_id ) ; } if ( ! gencp_trans ) { gencp_trans = wmem_new ( wmem_packet_scope ( ) , gencp_transaction_t ) ; gencp_trans -> cmd_frame = 0 ; gencp_trans -> ack_frame = 0 ; gencp_trans -> cmd_time = pinfo -> fd -> abs_ts ; } switch ( command_id ) { case U3V_READMEM_CMD : dissect_u3v_read_mem_cmd ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; break ; case U3V_WRITEMEM_CMD : dissect_u3v_write_mem_cmd ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; break ; case U3V_EVENT_CMD : dissect_u3v_event_cmd ( u3v_telegram_tree , tvb , pinfo , offset , data_length ) ; break ; case U3V_READMEM_ACK : if ( U3V_STATUS_GENCP_SUCCESS == status ) { dissect_u3v_read_mem_ack ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; } break ; case U3V_WRITEMEM_ACK : dissect_u3v_write_mem_ack ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; break ; case U3V_PENDING_ACK : dissect_u3v_pending_ack ( u3v_telegram_tree , tvb , pinfo , offset , data_length , u3v_conv_info , gencp_trans ) ; break ; default : proto_tree_add_item ( u3v_telegram_tree , hf_u3v_payloaddata , tvb , offset , data_length , ENC_NA ) ; break ; } return data_length + 12 ; } else if ( stream_detected ) { u3v_conv_info = ( u3v_conv_info_t * ) usb_conv_info -> class_data ; u3v_conv_info -> ep_stream = usb_conv_info -> endpoint ; col_set_str ( pinfo -> cinfo , COL_PROTOCOL , \"U3V\" ) ; col_clear ( pinfo -> cinfo , COL_INFO ) ; ti = proto_tree_add_item ( tree , proto_u3v , tvb , offset , - 1 , ENC_NA ) ; u3v_tree = proto_item_add_subtree ( ti , ett_u3v ) ; if ( tvb_captured_length ( tvb ) >= 4 ) { prefix = tvb_get_letohl ( tvb , offset ) ; switch ( prefix ) { case U3V_STREAM_LEADER_PREFIX : dissect_u3v_stream_leader ( u3v_tree , tvb , pinfo , usb_conv_info ) ; break ; case U3V_STREAM_TRAILER_PREFIX : dissect_u3v_stream_trailer ( u3v_tree , tvb , pinfo , usb_conv_info ) ; break ; default : dissect_u3v_stream_payload ( u3v_tree , tvb , pinfo , usb_conv_info ) ; break ; } } return tvb_captured_length ( tvb ) ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> class_data = u3v_conv_info ; usb_conv_info -> class_data_type = USB_CONV_U3V ; } else if ( usb_conv_info -> class_data_type != USB_CONV_U3V ) { return 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16842\n\n```\nCWE-125 static void voutf ( struct GlobalConfig * config , const char * prefix , const char * fmt , va_list ap ) { size_t width = ( 79 - strlen ( prefix ) ) ; if ( ! config -> mute ) { size_t len ; char * ptr ; char * print_buffer ; print_buffer = curlx_mvaprintf ( fmt , ap ) ; if ( ! print_buffer ) return ; len = strlen ( print_buffer ) ; ptr = print_buffer ; while ( len > 0 ) { fputs ( prefix , config -> errors ) ; if ( len > width ) { size_t cut = width - 1 ; while ( ! ISSPACE ( ptr [ cut ] ) && cut ) { cut -- ; } if ( 0 == cut ) cut = width - 1 ; ( void ) fwrite ( ptr , cut + 1 , 1 , config -> errors ) ; fputs ( \"\\\\n\" , config -> errors ) ; ptr += cut + 1 ; <S2SV_StartBug> len -= cut ; <S2SV_EndBug> } else { fputs ( ptr , config -> errors ) ; len = 0 ; } } curl_free ( print_buffer ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len -= cut + 1\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_iht8x8_64_add_c ( const int16_t * input , uint8_t * dest , int stride , <S2SV_EndBug> int tx_type ) { int i , j ; <S2SV_StartBug> int16_t out [ 8 * 8 ] ; <S2SV_EndBug> <S2SV_StartBug> int16_t * outptr = out ; <S2SV_EndBug> <S2SV_StartBug> int16_t temp_in [ 8 ] , temp_out [ 8 ] ; <S2SV_EndBug> const transform_2d ht = IHT_8 [ tx_type ] ; for ( i = 0 ; i < 8 ; ++ i ) { ht . rows ( input , outptr ) ; input += 8 ; outptr += 8 ; } for ( i = 0 ; i < 8 ; ++ i ) { for ( j = 0 ; j < 8 ; ++ j ) temp_in [ j ] = out [ j * 8 + i ] ; ht . cols ( temp_in , temp_out ) ; <S2SV_StartBug> for ( j = 0 ; j < 8 ; ++ j ) <S2SV_EndBug> <S2SV_StartBug> dest [ j * stride + i ] = clip_pixel ( ROUND_POWER_OF_TWO ( temp_out [ j ] , 5 ) <S2SV_EndBug> <S2SV_StartBug> + dest [ j * stride + i ] ) ; <S2SV_EndBug> } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> vp9_iht8x8_64_add_c ( const tran_low_t <S2SV_ModEnd> * input , <S2SV_ModStart> , j ; tran_low_t <S2SV_ModEnd> out [ 8 <S2SV_ModStart> 8 ] ; tran_low_t <S2SV_ModEnd> * outptr = <S2SV_ModStart> = out ; tran_low_t <S2SV_ModEnd> temp_in [ 8 <S2SV_ModStart> ++ j ) { <S2SV_ModStart> i ] = clip_pixel_add ( <S2SV_ModEnd> dest [ j <S2SV_ModStart> + i ] , ROUND_POWER_OF_TWO ( temp_out [ j ] , 5 ) ) ; } <S2SV_ModEnd> } } <S2SV_null>\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-399(资源管理错误)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1575\n\n```\nCWE-399 int sfgets ( void ) { struct pollfd pfd ; int pollret ; ssize_t readnb ; signed char seen_r = 0 ; <S2SV_StartBug> static size_t scanned ; <S2SV_EndBug> static size_t readnbd ; if ( scanned > ( size_t ) 0U ) { readnbd -= scanned ; memmove ( cmd , cmd + scanned , readnbd ) ; scanned = ( size_t ) 0U ; } pfd . fd = clientfd ; # ifdef __APPLE_CC__ pfd . events = POLLIN | POLLERR | POLLHUP ; # else pfd . events = POLLIN | POLLPRI | POLLERR | POLLHUP ; # endif while ( scanned < cmdsize ) { if ( scanned >= readnbd ) { pfd . revents = 0 ; while ( ( pollret = poll ( & pfd , 1U , idletime * 1000UL ) ) < 0 && errno == EINTR ) ; if ( pollret == 0 ) { return - 1 ; } if ( pollret <= 0 || ( pfd . revents & ( POLLERR | POLLHUP | POLLNVAL ) ) != 0 ) { return - 2 ; } if ( ( pfd . revents & ( POLLIN | POLLPRI ) ) == 0 ) { continue ; } if ( readnbd >= cmdsize ) { break ; } # ifdef WITH_TLS if ( tls_cnx != NULL ) { while ( ( readnb = SSL_read ( tls_cnx , cmd + readnbd , cmdsize - readnbd ) ) < ( ssize_t ) 0 && errno == EINTR ) ; } else # endif { while ( ( readnb = read ( clientfd , cmd + readnbd , cmdsize - readnbd ) ) < ( ssize_t ) 0 && errno == EINTR ) ; } if ( readnb <= ( ssize_t ) 0 ) { return - 2 ; } readnbd += readnb ; if ( readnbd > cmdsize ) { return - 2 ; } } # ifdef RFC_CONFORMANT_LINES if ( seen_r != 0 ) { # endif if ( cmd [ scanned ] == '\\\\n' ) { # ifndef RFC_CONFORMANT_LINES if ( seen_r != 0 ) { # endif cmd [ scanned - 1U ] = 0 ; # ifndef RFC_CONFORMANT_LINES } else { cmd [ scanned ] = 0 ; } # endif if ( ++ scanned >= readnbd ) { scanned = readnbd = ( size_t ) 0U ; } return 0 ; } seen_r = 0 ; # ifdef RFC_CONFORMANT_LINES } # endif if ( ISCTRLCODE ( cmd [ scanned ] ) ) { if ( cmd [ scanned ] == '\\\\r' ) { seen_r = 1 ; } # ifdef RFC_CONFORMANT_PARSER else if ( cmd [ scanned ] == 0 ) { cmd [ scanned ] = '\\\\n' ; } # else cmd [ scanned ] = '_' ; # endif } scanned ++ ; } die ( 421 , LOG_WARNING , MSG_LINE_TOO_LONG ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; <S2SV_ModEnd> if ( scanned\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-18241\n\n```\nCWE-476 int build_segment_manager ( struct f2fs_sb_info * sbi ) { struct f2fs_super_block * raw_super = F2FS_RAW_SUPER ( sbi ) ; struct f2fs_checkpoint * ckpt = F2FS_CKPT ( sbi ) ; struct f2fs_sm_info * sm_info ; int err ; sm_info = kzalloc ( sizeof ( struct f2fs_sm_info ) , GFP_KERNEL ) ; if ( ! sm_info ) return - ENOMEM ; sbi -> sm_info = sm_info ; sm_info -> seg0_blkaddr = le32_to_cpu ( raw_super -> segment0_blkaddr ) ; sm_info -> main_blkaddr = le32_to_cpu ( raw_super -> main_blkaddr ) ; sm_info -> segment_count = le32_to_cpu ( raw_super -> segment_count ) ; sm_info -> reserved_segments = le32_to_cpu ( ckpt -> rsvd_segment_count ) ; sm_info -> ovp_segments = le32_to_cpu ( ckpt -> overprov_segment_count ) ; sm_info -> main_segments = le32_to_cpu ( raw_super -> segment_count_main ) ; sm_info -> ssa_blkaddr = le32_to_cpu ( raw_super -> ssa_blkaddr ) ; sm_info -> rec_prefree_segments = sm_info -> main_segments * DEF_RECLAIM_PREFREE_SEGMENTS / 100 ; if ( sm_info -> rec_prefree_segments > DEF_MAX_RECLAIM_PREFREE_SEGMENTS ) sm_info -> rec_prefree_segments = DEF_MAX_RECLAIM_PREFREE_SEGMENTS ; if ( ! test_opt ( sbi , LFS ) ) sm_info -> ipu_policy = 1 << F2FS_IPU_FSYNC ; sm_info -> min_ipu_util = DEF_MIN_IPU_UTIL ; sm_info -> min_fsync_blocks = DEF_MIN_FSYNC_BLOCKS ; sm_info -> min_hot_blocks = DEF_MIN_HOT_BLOCKS ; sm_info -> trim_sections = DEF_BATCHED_TRIM_SECTIONS ; INIT_LIST_HEAD ( & sm_info -> sit_entry_set ) ; <S2SV_StartBug> if ( test_opt ( sbi , FLUSH_MERGE ) && ! f2fs_readonly ( sbi -> sb ) ) { <S2SV_EndBug> err = create_flush_cmd_control ( sbi ) ; if ( err ) return err ; } err = create_discard_cmd_control ( sbi ) ; if ( err ) return err ; err = build_sit_info ( sbi ) ; if ( err ) return err ; err = build_free_segmap ( sbi ) ; if ( err ) return err ; err = build_curseg ( sbi ) ; if ( err ) return err ; build_sit_entries ( sbi ) ; init_free_segmap ( sbi ) ; err = build_dirty_segmap ( sbi ) ; if ( err ) return err ; init_min_max_mtime ( sbi ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( <S2SV_ModEnd> ! f2fs_readonly (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-11328\n\n```\nCWE-119 static void test_modules ( ) { assert_true_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.one<S2SV_blank>+<S2SV_blank>1<S2SV_blank>==<S2SV_blank>tests.constants.two<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.foo<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.empty<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.empty()<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[1].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>or<S2SV_blank>true<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[0]<S2SV_blank>==<S2SV_blank>0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[1]<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[0]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[2]<S2SV_blank>==<S2SV_blank>\\\\\"baz\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"foo\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"bar\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"bar\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2,3)<S2SV_blank>==<S2SV_blank>6<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0,3.0)<S2SV_blank>==<S2SV_blank>6.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.foobar(1)<S2SV_blank>==<S2SV_blank>tests.foobar(1)<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.foobar(1)<S2SV_blank>!=<S2SV_blank>tests.foobar(2)<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.length(\\\\\"dummy\\\\\")<S2SV_blank>==<S2SV_blank>5<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.isum(1,1)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_false_rule ( <S2SV_StartBug> \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,1.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , <S2SV_EndBug> NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"foo\\\\\")<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"bar\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/i,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/is,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>7\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_error ( \"import<S2SV_blank>\\\\\"\\\\\\\\x00\\\\\"\" , ERROR_INVALID_MODULE_NAME ) ; assert_error ( \"import<S2SV_blank>\\\\\"\\\\\"\" , ERROR_INVALID_MODULE_NAME ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.one<S2SV_blank>+<S2SV_blank>1<S2SV_blank>==<S2SV_blank>tests.constants.two<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.foo<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.constants.empty<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.empty()<S2SV_blank>==<S2SV_blank>\\\\\"\\\\\"<S2SV_blank><S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[1].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>or<S2SV_blank>true<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[0]<S2SV_blank>==<S2SV_blank>0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[1]<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.integer_array[256]<S2SV_blank>==<S2SV_blank>256<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[0]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_array[2]<S2SV_blank>==<S2SV_blank>\\\\\"baz\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"foo\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"foo\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.string_dict[\\\\\"bar\\\\\"]<S2SV_blank>==<S2SV_blank>\\\\\"bar\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.isum(1,2,3)<S2SV_blank>==<S2SV_blank>6<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,2.0,3.0)<S2SV_blank>==<S2SV_blank>6.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.foobar(1)<S2SV_blank>==<S2SV_blank>tests.foobar(1)<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.foobar(1)<S2SV_blank>!=<S2SV_blank>tests.foobar(2)<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>condition:<S2SV_blank>tests.length(\\\\\"dummy\\\\\")<S2SV_blank>==<S2SV_blank>5<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.struct_array[0].i<S2SV_blank>==<S2SV_blank>1<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.isum(1,1)<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL ) <S2SV_ModStart> ; assert_false_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.fsum(1.0,1.0)<S2SV_blank>==<S2SV_blank>3.0<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"foo\\\\\")<S2SV_blank>==<S2SV_blank>3<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo/,\\\\\"bar\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/i,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>-1\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" , NULL ) ; assert_true_rule ( \"import<S2SV_blank>\\\\\"tests\\\\\"<S2SV_blank>\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>rule<S2SV_blank>test<S2SV_blank>{<S2SV_blank>condition:<S2SV_blank>tests.match(/foo.bar/is,\\\\\"FOO\\\\\\\\nBAR\\\\\")<S2SV_blank>==<S2SV_blank>7\\\\\\n<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>}\" <S2SV_ModEnd> , NULL )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-415(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-16425\n\n```\nCWE-415 int read_file ( struct sc_card * card , char * str_path , unsigned char * * data , size_t * data_len ) { struct sc_path path ; struct sc_file * file ; unsigned char * p ; int ok = 0 ; int r ; size_t len ; sc_format_path ( str_path , & path ) ; if ( SC_SUCCESS != sc_select_file ( card , & path , & file ) ) { goto err ; } <S2SV_StartBug> len = file ? file -> size : 4096 ; <S2SV_EndBug> p = realloc ( * data , len ) ; if ( ! p ) { goto err ; } * data = p ; * data_len = len ; r = sc_read_binary ( card , 0 , p , len , 0 ) ; if ( r < 0 ) goto err ; * data_len = r ; ok = 1 ; err : sc_file_free ( file ) ; return ok ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> len = file && file -> size > 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-3228\n\n```\nCWE-200 static int irda_recvmsg_dgram ( struct kiocb * iocb , struct socket * sock , struct msghdr * msg , size_t size , int flags ) { struct sock * sk = sock -> sk ; struct irda_sock * self = irda_sk ( sk ) ; struct sk_buff * skb ; size_t copied ; int err ; IRDA_DEBUG ( 4 , \"%s()\\\\n\" , __func__ ) ; <S2SV_StartBug> skb = skb_recv_datagram ( sk , flags & ~ MSG_DONTWAIT , <S2SV_EndBug> flags & MSG_DONTWAIT , & err ) ; if ( ! skb ) return err ; skb_reset_transport_header ( skb ) ; copied = skb -> len ; if ( copied > size ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Received<S2SV_blank>truncated<S2SV_blank>frame<S2SV_blank>(%zd<S2SV_blank><<S2SV_blank>%zd)!\\\\n\" , __func__ , copied , size ) ; copied = size ; msg -> msg_flags |= MSG_TRUNC ; } skb_copy_datagram_iovec ( skb , 0 , msg -> msg_iov , copied ) ; skb_free_datagram ( sk , skb ) ; if ( self -> rx_flow == FLOW_STOP ) { if ( ( atomic_read ( & sk -> sk_rmem_alloc ) << 2 ) <= sk -> sk_rcvbuf ) { IRDA_DEBUG ( 2 , \"%s(),<S2SV_blank>Starting<S2SV_blank>IrTTP\\\\n\" , __func__ ) ; self -> rx_flow = FLOW_START ; irttp_flow_request ( self -> tsap , FLOW_START ) ; } } return copied ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> __func__ ) ; msg -> msg_namelen = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-310(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2548\n\n```\nCWE-310 static int crypto_report_one ( struct crypto_alg * alg , struct crypto_user_alg * ualg , struct sk_buff * skb ) { <S2SV_StartBug> memcpy ( & ualg -> cru_name , & alg -> cra_name , sizeof ( ualg -> cru_name ) ) ; <S2SV_EndBug> <S2SV_StartBug> memcpy ( & ualg -> cru_driver_name , & alg -> cra_driver_name , <S2SV_EndBug> sizeof ( ualg -> cru_driver_name ) ) ; <S2SV_StartBug> memcpy ( & ualg -> cru_module_name , module_name ( alg -> cra_module ) , <S2SV_EndBug> <S2SV_StartBug> CRYPTO_MAX_ALG_NAME ) ; <S2SV_EndBug> ualg -> cru_flags = alg -> cra_flags ; ualg -> cru_refcnt = atomic_read ( & alg -> cra_refcnt ) ; if ( nla_put_u32 ( skb , CRYPTOCFGA_PRIORITY_VAL , alg -> cra_priority ) ) goto nla_put_failure ; if ( alg -> cra_flags & CRYPTO_ALG_LARVAL ) { struct crypto_report_larval rl ; <S2SV_StartBug> snprintf ( rl . type , CRYPTO_MAX_ALG_NAME , \"%s\" , \"larval\" ) ; <S2SV_EndBug> if ( nla_put ( skb , CRYPTOCFGA_REPORT_LARVAL , sizeof ( struct crypto_report_larval ) , & rl ) ) goto nla_put_failure ; goto out ; } if ( alg -> cra_type && alg -> cra_type -> report ) { if ( alg -> cra_type -> report ( skb , alg ) ) goto nla_put_failure ; goto out ; } switch ( alg -> cra_flags & ( CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_LARVAL ) ) { case CRYPTO_ALG_TYPE_CIPHER : if ( crypto_report_cipher ( skb , alg ) ) goto nla_put_failure ; break ; case CRYPTO_ALG_TYPE_COMPRESS : if ( crypto_report_comp ( skb , alg ) ) goto nla_put_failure ; break ; } out : return 0 ; nla_put_failure : return - EMSGSIZE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> skb ) { strncpy ( <S2SV_ModEnd> ualg -> cru_name <S2SV_ModStart> -> cru_name , <S2SV_ModEnd> alg -> cra_name <S2SV_ModStart> ) ) ; strncpy ( <S2SV_ModEnd> ualg -> cru_driver_name <S2SV_ModStart> -> cru_driver_name , <S2SV_ModEnd> alg -> cra_driver_name <S2SV_ModStart> ) ) ; strncpy ( <S2SV_ModEnd> ualg -> cru_module_name <S2SV_ModStart> cra_module ) , sizeof ( ualg -> cru_module_name ) ) ; ualg -> cru_type = 0 ; ualg -> cru_mask = 0 <S2SV_ModEnd> ; ualg -> <S2SV_ModStart> crypto_report_larval rl ; strncpy <S2SV_ModEnd> ( rl . <S2SV_ModStart> . type , \"larval\" , sizeof ( rl . type ) <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-8069\n\n```\nCWE-119 <S2SV_StartBug> static int set_registers ( rtl8150_t * dev , u16 indx , u16 size , void * data ) <S2SV_EndBug> { <S2SV_StartBug> return usb_control_msg ( dev -> udev , usb_sndctrlpipe ( dev -> udev , 0 ) , <S2SV_EndBug> RTL8150_REQ_SET_REGS , RTL8150_REQT_WRITE , <S2SV_StartBug> indx , 0 , data , size , 500 ) ; <S2SV_EndBug> <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> u16 size , const <S2SV_ModStart> data ) { void * buf ; int ret ; buf = kmemdup ( data , size , GFP_NOIO ) ; if ( ! buf ) return - ENOMEM ; ret = <S2SV_ModEnd> usb_control_msg ( dev <S2SV_ModStart> , 0 , buf <S2SV_ModEnd> , size , <S2SV_ModStart> 500 ) ; kfree ( buf ) ; return ret ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3184\n\n```\nCWE-119 static __u8 * mr_report_fixup ( struct hid_device * hdev , __u8 * rdesc , unsigned int * rsize ) { <S2SV_StartBug> if ( * rsize >= 30 && rdesc [ 29 ] == 0x05 && rdesc [ 30 ] == 0x09 ) { <S2SV_EndBug> hid_info ( hdev , \"fixing<S2SV_blank>up<S2SV_blank>button/consumer<S2SV_blank>in<S2SV_blank>HID<S2SV_blank>report<S2SV_blank>descriptor\\\\n\" ) ; rdesc [ 30 ] = 0x0c ; } return rdesc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * rsize >= 31 <S2SV_ModEnd> && rdesc [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-0500\n\n```\nCWE-787 CURLcode Curl_smtp_escape_eob ( struct connectdata * conn , const ssize_t nread ) { ssize_t i ; ssize_t si ; struct Curl_easy * data = conn -> data ; struct SMTP * smtp = data -> req . protop ; char * scratch = data -> state . scratch ; char * newscratch = NULL ; char * oldscratch = NULL ; size_t eob_sent ; if ( ! scratch || data -> set . crlf ) { oldscratch = scratch ; <S2SV_StartBug> scratch = newscratch = malloc ( 2 * data -> set . buffer_size ) ; <S2SV_EndBug> if ( ! newscratch ) { failf ( data , \"Failed<S2SV_blank>to<S2SV_blank>alloc<S2SV_blank>scratch<S2SV_blank>buffer!\" ) ; return CURLE_OUT_OF_MEMORY ; } <S2SV_StartBug> } <S2SV_EndBug> eob_sent = smtp -> eob ; for ( i = 0 , si = 0 ; i < nread ; i ++ ) { if ( SMTP_EOB [ smtp -> eob ] == data -> req . upload_fromhere [ i ] ) { smtp -> eob ++ ; if ( 2 == smtp -> eob || SMTP_EOB_LEN == smtp -> eob ) smtp -> trailing_crlf = TRUE ; else smtp -> trailing_crlf = FALSE ; } else if ( smtp -> eob ) { memcpy ( & scratch [ si ] , & SMTP_EOB [ eob_sent ] , smtp -> eob - eob_sent ) ; si += smtp -> eob - eob_sent ; if ( SMTP_EOB [ 0 ] == data -> req . upload_fromhere [ i ] ) smtp -> eob = 1 ; else smtp -> eob = 0 ; eob_sent = 0 ; smtp -> trailing_crlf = FALSE ; } if ( SMTP_EOB_FIND_LEN == smtp -> eob ) { memcpy ( & scratch [ si ] , & SMTP_EOB_REPL [ eob_sent ] , SMTP_EOB_REPL_LEN - eob_sent ) ; si += SMTP_EOB_REPL_LEN - eob_sent ; smtp -> eob = 0 ; eob_sent = 0 ; } else if ( ! smtp -> eob ) scratch [ si ++ ] = data -> req . upload_fromhere [ i ] ; } if ( smtp -> eob - eob_sent ) { memcpy ( & scratch [ si ] , & SMTP_EOB [ eob_sent ] , smtp -> eob - eob_sent ) ; si += smtp -> eob - eob_sent ; } if ( si != nread ) { data -> req . upload_fromhere = scratch ; data -> state . scratch = scratch ; free ( oldscratch ) ; data -> req . upload_present = si ; } else free ( newscratch ) ; return CURLE_OK ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( 2 * UPLOAD_BUFSIZE <S2SV_ModEnd> ) ; if <S2SV_ModStart> ; } } DEBUGASSERT ( UPLOAD_BUFSIZE >= nread ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19275\n\n```\nCWE-125 mod_ty PyAST_obj2mod ( PyObject * ast , PyArena * arena , int mode ) { mod_ty res ; PyObject * req_type [ 3 ] ; <S2SV_StartBug> char * req_name [ ] = { \"Module\" , \"Expression\" , \"Interactive\" } ; <S2SV_EndBug> int isinstance ; req_type [ 0 ] = ( PyObject * ) Module_type ; req_type [ 1 ] = ( PyObject * ) Expression_type ; req_type [ 2 ] = ( PyObject * ) Interactive_type ; <S2SV_StartBug> assert ( 0 <= mode && mode <= 2 ) ; <S2SV_EndBug> if ( ! init_types ( ) ) return NULL ; isinstance = PyObject_IsInstance ( ast , req_type [ mode ] ) ; if ( isinstance == - 1 ) return NULL ; if ( ! isinstance ) { PyErr_Format ( PyExc_TypeError , \"expected<S2SV_blank>%s<S2SV_blank>node,<S2SV_blank>got<S2SV_blank>%.400s\" , req_name [ mode ] , Py_TYPE ( ast ) -> tp_name ) ; return NULL ; } if ( obj2ast_mod ( ast , & res , arena ) != 0 ) return NULL ; else return res ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> \"Expression\" , \"Interactive\" , \"FunctionType\" <S2SV_ModStart> && mode <= 3 <S2SV_ModEnd> ) ; if\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-4914\n\n```\nCWE-20 int rose_rx_call_request ( struct sk_buff * skb , struct net_device * dev , struct rose_neigh * neigh , unsigned int lci ) { struct sock * sk ; struct sock * make ; struct rose_sock * make_rose ; struct rose_facilities_struct facilities ; <S2SV_StartBug> int n , len ; <S2SV_EndBug> skb -> sk = NULL ; <S2SV_StartBug> memset ( & facilities , 0x00 , sizeof ( struct rose_facilities_struct ) ) ; <S2SV_EndBug> len = ( ( ( skb -> data [ 3 ] >> 4 ) & 0x0F ) + 1 ) >> 1 ; len += ( ( ( skb -> data [ 3 ] >> 0 ) & 0x0F ) + 1 ) >> 1 ; <S2SV_StartBug> if ( ! rose_parse_facilities ( skb -> data + len + 4 , & facilities ) ) { <S2SV_EndBug> rose_transmit_clear_request ( neigh , lci , ROSE_INVALID_FACILITY , 76 ) ; return 0 ; } sk = rose_find_listener ( & facilities . source_addr , & facilities . source_call ) ; if ( sk == NULL || sk_acceptq_is_full ( sk ) || ( make = rose_make_new ( sk ) ) == NULL ) { rose_transmit_clear_request ( neigh , lci , ROSE_NETWORK_CONGESTION , 120 ) ; return 0 ; } skb -> sk = make ; make -> sk_state = TCP_ESTABLISHED ; make_rose = rose_sk ( make ) ; make_rose -> lci = lci ; make_rose -> dest_addr = facilities . dest_addr ; make_rose -> dest_call = facilities . dest_call ; make_rose -> dest_ndigis = facilities . dest_ndigis ; for ( n = 0 ; n < facilities . dest_ndigis ; n ++ ) make_rose -> dest_digis [ n ] = facilities . dest_digis [ n ] ; make_rose -> source_addr = facilities . source_addr ; make_rose -> source_call = facilities . source_call ; make_rose -> source_ndigis = facilities . source_ndigis ; for ( n = 0 ; n < facilities . source_ndigis ; n ++ ) make_rose -> source_digis [ n ] = facilities . source_digis [ n ] ; make_rose -> neighbour = neigh ; make_rose -> device = dev ; make_rose -> facilities = facilities ; make_rose -> neighbour -> use ++ ; if ( rose_sk ( sk ) -> defer ) { make_rose -> state = ROSE_STATE_5 ; } else { rose_write_internal ( make , ROSE_CALL_ACCEPTED ) ; make_rose -> state = ROSE_STATE_3 ; rose_start_idletimer ( make ) ; } make_rose -> condition = 0x00 ; make_rose -> vs = 0 ; make_rose -> va = 0 ; make_rose -> vr = 0 ; make_rose -> vl = 0 ; sk -> sk_ack_backlog ++ ; rose_insert_socket ( make ) ; skb_queue_head ( & sk -> sk_receive_queue , skb ) ; rose_start_heartbeat ( make ) ; if ( ! sock_flag ( sk , SOCK_DEAD ) ) sk -> sk_data_ready ( sk , skb -> len ) ; return 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int n <S2SV_ModEnd> ; skb -> <S2SV_ModStart> rose_facilities_struct ) ) <S2SV_ModEnd> ; if ( <S2SV_ModStart> -> data + ROSE_CALL_REQ_FACILITIES_OFF , skb -> len - ROSE_CALL_REQ_FACILITIES_OFF , <S2SV_ModEnd> & facilities )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14467\n\n```\nCWE-125 static void bgp_capabilities_print ( netdissect_options * ndo , const u_char * opt , int caps_len ) { int cap_type , cap_len , tcap_len , cap_offset ; int i = 0 ; while ( i < caps_len ) { ND_TCHECK2 ( opt [ i ] , BGP_CAP_HEADER_SIZE ) ; cap_type = opt [ i ] ; cap_len = opt [ i + 1 ] ; tcap_len = cap_len ; ND_PRINT ( ( ndo , \"\\\\n\\\\t<S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank><S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>length:<S2SV_blank>%u\" , tok2str ( bgp_capcode_values , \"Unknown\" , cap_type ) , cap_type , cap_len ) ) ; ND_TCHECK2 ( opt [ i + 2 ] , cap_len ) ; switch ( cap_type ) { <S2SV_StartBug> case BGP_CAPCODE_MP : <S2SV_EndBug> ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tAFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>SAFI<S2SV_blank>%s<S2SV_blank>(%u)\" , tok2str ( af_values , \"Unknown\" , EXTRACT_16BITS ( opt + i + 2 ) ) , EXTRACT_16BITS ( opt + i + 2 ) , tok2str ( bgp_safi_values , \"Unknown\" , opt [ i + 5 ] ) , opt [ i + 5 ] ) ) ; break ; case BGP_CAPCODE_RESTART : ND_TCHECK_16BITS ( opt + i + 2 ) ; ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tRestart<S2SV_blank>Flags:<S2SV_blank>[%s],<S2SV_blank>Restart<S2SV_blank>Time<S2SV_blank>%us\" , ( ( opt [ i + 2 ] ) & 0x80 ) ? \"R\" : \"none\" , EXTRACT_16BITS ( opt + i + 2 ) & 0xfff ) ) ; tcap_len -= 2 ; cap_offset = 4 ; while ( tcap_len >= 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank><S2SV_blank>AFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>SAFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Forwarding<S2SV_blank>state<S2SV_blank>preserved:<S2SV_blank>%s\" , tok2str ( af_values , \"Unknown\" , EXTRACT_16BITS ( opt + i + cap_offset ) ) , EXTRACT_16BITS ( opt + i + cap_offset ) , tok2str ( bgp_safi_values , \"Unknown\" , opt [ i + cap_offset + 2 ] ) , opt [ i + cap_offset + 2 ] , ( ( opt [ i + cap_offset + 3 ] ) & 0x80 ) ? \"yes\" : \"no\" ) ) ; tcap_len -= 4 ; cap_offset += 4 ; } break ; case BGP_CAPCODE_RR : case BGP_CAPCODE_RR_CISCO : break ; case BGP_CAPCODE_AS_NEW : if ( cap_len == 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t<S2SV_blank>4<S2SV_blank>Byte<S2SV_blank>AS<S2SV_blank>%s\" , as_printf ( ndo , astostr , sizeof ( astostr ) , EXTRACT_32BITS ( opt + i + 2 ) ) ) ) ; } break ; case BGP_CAPCODE_ADD_PATH : cap_offset = 2 ; if ( tcap_len == 0 ) { ND_PRINT ( ( ndo , \"<S2SV_blank>(bogus)\" ) ) ; break ; } while ( tcap_len > 0 ) { if ( tcap_len < 4 ) { ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\t(invalid)\" ) ) ; break ; } ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tAFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>SAFI<S2SV_blank>%s<S2SV_blank>(%u),<S2SV_blank>Send/Receive:<S2SV_blank>%s\" , tok2str ( af_values , \"Unknown\" , EXTRACT_16BITS ( opt + i + cap_offset ) ) , EXTRACT_16BITS ( opt + i + cap_offset ) , tok2str ( bgp_safi_values , \"Unknown\" , opt [ i + cap_offset + 2 ] ) , opt [ i + cap_offset + 2 ] , tok2str ( bgp_add_path_recvsend , \"Bogus<S2SV_blank>(0x%02x)\" , opt [ i + cap_offset + 3 ] ) ) ) ; tcap_len -= 4 ; cap_offset += 4 ; } break ; default : ND_PRINT ( ( ndo , \"\\\\n\\\\t\\\\tno<S2SV_blank>decoder<S2SV_blank>for<S2SV_blank>Capability<S2SV_blank>%u\" , cap_type ) ) ; if ( ndo -> ndo_vflag <= 1 ) print_unknown_data ( ndo , & opt [ i + 2 ] , \"\\\\n\\\\t\\\\t\" , cap_len ) ; break ; } if ( ndo -> ndo_vflag > 1 && cap_len > 0 ) { print_unknown_data ( ndo , & opt [ i + 2 ] , \"\\\\n\\\\t\\\\t\" , cap_len ) ; } i += BGP_CAP_HEADER_SIZE + cap_len ; } return ; trunc : ND_PRINT ( ( ndo , \"[|BGP]\" ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> case BGP_CAPCODE_MP : ND_TCHECK_8BITS ( opt + i + 5 ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19479\n\n```\nCWE-125 static void parse_sec_attr_44 ( sc_file_t * file , const u8 * buf , size_t len ) { const int df_idx [ 8 ] = { SC_AC_OP_DELETE , SC_AC_OP_CREATE , SC_AC_OP_CREATE , SC_AC_OP_INVALIDATE , SC_AC_OP_REHABILITATE , SC_AC_OP_LOCK , SC_AC_OP_DELETE , - 1 } ; const int ef_idx [ 8 ] = { SC_AC_OP_READ , SC_AC_OP_UPDATE , SC_AC_OP_WRITE , SC_AC_OP_INVALIDATE , SC_AC_OP_REHABILITATE , - 1 , SC_AC_OP_ERASE , - 1 } ; const int efi_idx [ 8 ] = { SC_AC_OP_READ , SC_AC_OP_ERASE , SC_AC_OP_UPDATE , SC_AC_OP_INVALIDATE , SC_AC_OP_REHABILITATE , - 1 , SC_AC_OP_ERASE , - 1 } ; u8 bValue ; int i ; int iKeyRef = 0 ; int iMethod ; int iPinCount ; int iOffset = 0 ; int iOperation ; const int * p_idx ; while ( len > 1 ) { size_t iACLen = buf [ iOffset ] & 0x0F ; if ( iACLen > len ) break ; iMethod = SC_AC_NONE ; if ( buf [ iOffset ] & 0X80 ) { size_t iParmLen = 1 ; size_t iKeyLen = 0 ; if ( buf [ iOffset ] & 0x20 ) iKeyLen ++ ; if ( buf [ iOffset + 1 ] & 0x40 ) iParmLen ++ ; if ( buf [ iOffset + 1 ] & 0x20 ) iParmLen ++ ; if ( buf [ iOffset + 1 ] & 0x10 ) iParmLen ++ ; if ( buf [ iOffset + 1 ] & 0x08 ) iParmLen ++ ; if ( iKeyLen ) { int iSC ; if ( len < 1 + ( size_t ) iACLen ) break ; iSC = buf [ iOffset + iACLen ] ; switch ( ( iSC >> 5 ) & 0x03 ) { case 0 : iMethod = SC_AC_TERM ; break ; case 1 : iMethod = SC_AC_AUT ; break ; case 2 : case 3 : iMethod = SC_AC_PRO ; break ; } iKeyRef = iSC & 0x1F ; } if ( iACLen > ( 1 + iParmLen + iKeyLen ) ) { if ( len < 1 + 1 + 1 + ( size_t ) iParmLen ) break ; iKeyRef = buf [ iOffset + 1 + 1 + iParmLen ] ; iMethod = SC_AC_CHV ; } if ( len < 1 + 2 ) break ; switch ( buf [ iOffset + 2 ] ) { case 0x2A : iOperation = SC_AC_OP_CRYPTO ; break ; case 0x46 : iOperation = SC_AC_OP_UPDATE ; break ; default : iOperation = SC_AC_OP_SELECT ; break ; } sc_file_add_acl_entry ( file , iOperation , iMethod , iKeyRef ) ; } else { switch ( file -> type ) { case SC_FILE_TYPE_DF : p_idx = df_idx ; break ; case SC_FILE_TYPE_INTERNAL_EF : p_idx = efi_idx ; break ; default : p_idx = ef_idx ; break ; } <S2SV_StartBug> iPinCount = iACLen - 1 ; <S2SV_EndBug> if ( buf [ iOffset ] & 0x20 ) { int iSC ; if ( len < 1 + ( size_t ) iACLen ) break ; iSC = buf [ iOffset + iACLen ] ; switch ( ( iSC >> 5 ) & 0x03 ) { case 0 : iMethod = SC_AC_TERM ; break ; case 1 : iMethod = SC_AC_AUT ; break ; case 2 : case 3 : iMethod = SC_AC_PRO ; break ; } iKeyRef = iSC & 0x1F ; iPinCount -- ; } if ( iPinCount > 0 ) { if ( len < 1 + 2 ) break ; iKeyRef = buf [ iOffset + 2 ] ; iMethod = SC_AC_CHV ; } bValue = buf [ iOffset + 1 ] ; for ( i = 0 ; i < 8 ; i ++ ) { if ( ( bValue & 1 ) && ( p_idx [ i ] >= 0 ) ) sc_file_add_acl_entry ( file , p_idx [ i ] , iMethod , iKeyRef ) ; bValue >>= 1 ; } } iOffset += iACLen + 1 ; len -= iACLen + 1 ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> iPinCount = iACLen > 0 ? iACLen - 1 : 0 <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-20(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3183\n\n```\nCWE-20 static apr_status_t parse_chunk_size ( http_ctx_t * ctx , const char * buffer , apr_size_t len , int linelimit ) { apr_size_t i = 0 ; while ( i < len ) { char c = buffer [ i ] ; ap_xlate_proto_from_ascii ( & c , 1 ) ; <S2SV_StartBug> if ( ctx -> state == BODY_CHUNK_END ) { <S2SV_EndBug> if ( c == LF ) { <S2SV_StartBug> ctx -> state = BODY_CHUNK ; <S2SV_EndBug> } i ++ ; continue ; } if ( ctx -> state == BODY_CHUNK ) { if ( ! apr_isxdigit ( c ) ) { <S2SV_StartBug> return APR_EGENERAL ; <S2SV_EndBug> } else { ctx -> state = BODY_CHUNK_PART ; } ctx -> remaining = 0 ; <S2SV_StartBug> ctx -> chunkbits = sizeof ( long ) * 8 ; <S2SV_EndBug> ctx -> chunk_used = 0 ; } <S2SV_StartBug> if ( c == ';' || c == CR ) { <S2SV_EndBug> ctx -> state = BODY_CHUNK_EXT ; } <S2SV_StartBug> else if ( c == LF ) { <S2SV_EndBug> if ( ctx -> remaining ) { ctx -> state = BODY_CHUNK_DATA ; } else { ctx -> state = BODY_CHUNK_TRAILER ; } } else if ( ctx -> state != BODY_CHUNK_EXT ) { <S2SV_StartBug> int xvalue = 0 ; <S2SV_EndBug> if ( ! ctx -> remaining && c == '0' ) { i ++ ; <S2SV_StartBug> continue ; <S2SV_EndBug> } if ( c >= '0' && c <= '9' ) { xvalue = c - '0' ; } else if ( c >= 'A' && c <= 'F' ) { xvalue = c - 'A' + 0xa ; } else if ( c >= 'a' && c <= 'f' ) { xvalue = c - 'a' + 0xa ; } else { <S2SV_StartBug> return APR_EGENERAL ; <S2SV_EndBug> } ctx -> remaining = ( ctx -> remaining << 4 ) | xvalue ; <S2SV_StartBug> ctx -> chunkbits -= 4 ; <S2SV_EndBug> if ( ctx -> chunkbits <= 0 || ctx -> remaining < 0 ) { return APR_ENOSPC ; <S2SV_StartBug> } <S2SV_EndBug> } i ++ ; } ctx -> chunk_used += len ; if ( ctx -> chunk_used < 0 || ctx -> chunk_used > linelimit ) { return APR_ENOSPC ; } return APR_SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> state == BODY_CHUNK_END || ctx -> state == BODY_CHUNK_END_LF <S2SV_ModStart> state = BODY_CHUNK ; } else if ( c == CR && ctx -> state == BODY_CHUNK_END ) { ctx -> state = BODY_CHUNK_END_LF ; } else { return APR_EINVAL <S2SV_ModStart> ) { return APR_EINVAL <S2SV_ModEnd> ; } else <S2SV_ModStart> = sizeof ( apr_off_t <S2SV_ModEnd> ) * 8 <S2SV_ModStart> ( c == LF ) { if ( ctx -> remaining ) { ctx -> state = BODY_CHUNK_DATA ; } else { ctx -> state = BODY_CHUNK_TRAILER ; } } else if ( ctx -> state == BODY_CHUNK_LF ) { return APR_EINVAL ; } else if ( c == CR ) { ctx -> state = BODY_CHUNK_LF ; } else if ( c == ';' <S2SV_ModEnd> ) { ctx <S2SV_ModStart> else if ( ctx -> state == BODY_CHUNK_EXT ) { if ( c != '\\\\t' && apr_iscntrl ( c ) ) { return APR_EINVAL ; } } else if ( ctx -> state == BODY_CHUNK_PART <S2SV_ModEnd> ) { int <S2SV_ModStart> { int xvalue <S2SV_ModEnd> ; if ( <S2SV_ModStart> ++ ; continue ; } ctx -> chunkbits -= 4 ; if ( ctx -> chunkbits < 0 ) { return APR_ENOSPC <S2SV_ModStart> else { return APR_EINVAL <S2SV_ModEnd> ; } ctx <S2SV_ModStart> | xvalue ; if ( <S2SV_ModEnd> ctx -> remaining <S2SV_ModStart> APR_ENOSPC ; } } else { return APR_EGENERAL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-14934\n\n```\nCWE-787 pdf_t * pdf_new ( const char * name ) { const char * n ; pdf_t * pdf ; <S2SV_StartBug> pdf = calloc ( 1 , sizeof ( pdf_t ) ) ; <S2SV_EndBug> if ( name ) { if ( ( n = strrchr ( name , '/' ) ) ) ++ n ; else n = name ; <S2SV_StartBug> pdf -> name = malloc ( strlen ( n ) + 1 ) ; <S2SV_EndBug> strcpy ( pdf -> name , n ) ; } else { <S2SV_StartBug> pdf -> name = malloc ( strlen ( \"Unknown\" ) + 1 ) ; <S2SV_EndBug> strcpy ( pdf -> name , \"Unknown\" ) ; } return pdf ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; pdf = safe_calloc ( <S2SV_ModEnd> sizeof ( pdf_t <S2SV_ModStart> -> name = safe_calloc <S2SV_ModEnd> ( strlen ( <S2SV_ModStart> -> name = safe_calloc <S2SV_ModEnd> ( strlen (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18844\n\n```\nCWE-617 static int pci_emul_alloc_resource ( uint64_t * baseptr , uint64_t limit , uint64_t size , uint64_t * addr ) { uint64_t base ; <S2SV_StartBug> assert ( ( size & ( size - 1 ) ) == 0 ) ; <S2SV_EndBug> base = roundup2 ( * baseptr , size ) ; if ( base + size <= limit ) { * addr = base ; * baseptr = base + size ; return 0 ; } else return - 1 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> uint64_t base ; if <S2SV_ModEnd> ( ( size <S2SV_ModStart> 1 ) ) != 0 ) { pr_err ( \"%s:<S2SV_blank>Cannot<S2SV_blank>alloc<S2SV_blank>invalid<S2SV_blank>size<S2SV_blank>%lld<S2SV_blank>resource\\\\n\" , __func__ , size ) ; return - 1 ; } <S2SV_ModEnd> base = roundup2\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-295(证书验证不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-6594\n\n```\nCWE-295 static krb5_error_code tgs_build_reply ( krb5_context context , krb5_kdc_configuration * config , KDC_REQ * req , KDC_REQ_BODY * b , hdb_entry_ex * krbtgt , krb5_enctype krbtgt_etype , const krb5_keyblock * replykey , int rk_is_subkey , krb5_ticket * ticket , krb5_data * reply , const char * from , const char * * e_text , AuthorizationData * * auth_data , const struct sockaddr * from_addr ) { krb5_error_code ret ; krb5_principal cp = NULL , sp = NULL , rsp = NULL , tp = NULL , dp = NULL ; krb5_principal krbtgt_out_principal = NULL ; char * spn = NULL , * cpn = NULL , * tpn = NULL , * dpn = NULL , * krbtgt_out_n = NULL ; hdb_entry_ex * server = NULL , * client = NULL , * s4u2self_impersonated_client = NULL ; HDB * clientdb , * s4u2self_impersonated_clientdb ; krb5_realm ref_realm = NULL ; EncTicketPart * tgt = & ticket -> ticket ; krb5_principals spp = NULL ; const EncryptionKey * ekey ; krb5_keyblock sessionkey ; krb5_kvno kvno ; <S2SV_StartBug> krb5_data rspac ; <S2SV_EndBug> const char * our_realm = krb5_principal_get_comp_string ( context , krbtgt -> entry . principal , 1 ) ; char * * capath = NULL ; size_t num_capath = 0 ; hdb_entry_ex * krbtgt_out = NULL ; METHOD_DATA enc_pa_data ; PrincipalName * s ; Realm r ; EncTicketPart adtkt ; char opt_str [ 128 ] ; int signedpath = 0 ; Key * tkey_check ; Key * tkey_sign ; int flags = HDB_F_FOR_TGS_REQ ; memset ( & sessionkey , 0 , sizeof ( sessionkey ) ) ; memset ( & adtkt , 0 , sizeof ( adtkt ) ) ; krb5_data_zero ( & rspac ) ; memset ( & enc_pa_data , 0 , sizeof ( enc_pa_data ) ) ; s = b -> sname ; r = b -> realm ; flags |= HDB_F_CANON ; if ( b -> kdc_options . enc_tkt_in_skey ) { Ticket * t ; hdb_entry_ex * uu ; krb5_principal p ; Key * uukey ; krb5uint32 second_kvno = 0 ; krb5uint32 * kvno_ptr = NULL ; if ( b -> additional_tickets == NULL || b -> additional_tickets -> len == 0 ) { ret = KRB5KDC_ERR_BADOPTION ; kdc_log ( context , config , 0 , \"No<S2SV_blank>second<S2SV_blank>ticket<S2SV_blank>present<S2SV_blank>in<S2SV_blank>request\" ) ; goto out ; } t = & b -> additional_tickets -> val [ 0 ] ; if ( ! get_krbtgt_realm ( & t -> sname ) ) { kdc_log ( context , config , 0 , \"Additional<S2SV_blank>ticket<S2SV_blank>is<S2SV_blank>not<S2SV_blank>a<S2SV_blank>ticket-granting<S2SV_blank>ticket\" ) ; ret = KRB5KDC_ERR_POLICY ; goto out ; } _krb5_principalname2krb5_principal ( context , & p , t -> sname , t -> realm ) ; if ( t -> enc_part . kvno ) { second_kvno = * t -> enc_part . kvno ; kvno_ptr = & second_kvno ; } ret = _kdc_db_fetch ( context , config , p , HDB_F_GET_KRBTGT , kvno_ptr , NULL , & uu ) ; krb5_free_principal ( context , p ) ; if ( ret ) { if ( ret == HDB_ERR_NOENTRY ) ret = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; goto out ; } ret = hdb_enctype2key ( context , & uu -> entry , NULL , t -> enc_part . etype , & uukey ) ; if ( ret ) { _kdc_free_ent ( context , uu ) ; ret = KRB5KDC_ERR_ETYPE_NOSUPP ; goto out ; } ret = krb5_decrypt_ticket ( context , t , & uukey -> key , & adtkt , 0 ) ; _kdc_free_ent ( context , uu ) ; if ( ret ) goto out ; ret = verify_flags ( context , config , & adtkt , spn ) ; if ( ret ) goto out ; s = & adtkt . cname ; r = adtkt . crealm ; } _krb5_principalname2krb5_principal ( context , & sp , * s , r ) ; ret = krb5_unparse_name ( context , sp , & spn ) ; if ( ret ) goto out ; _krb5_principalname2krb5_principal ( context , & cp , tgt -> cname , tgt -> crealm ) ; ret = krb5_unparse_name ( context , cp , & cpn ) ; if ( ret ) goto out ; unparse_flags ( KDCOptions2int ( b -> kdc_options ) , asn1_KDCOptions_units ( ) , opt_str , sizeof ( opt_str ) ) ; if ( * opt_str ) kdc_log ( context , config , 0 , \"TGS-REQ<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>[%s]\" , cpn , from , spn , opt_str ) ; else kdc_log ( context , config , 0 , \"TGS-REQ<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>%s\" , cpn , from , spn ) ; server_lookup : ret = _kdc_db_fetch ( context , config , sp , HDB_F_GET_SERVER | flags , NULL , NULL , & server ) ; if ( ret == HDB_ERR_NOT_FOUND_HERE ) { kdc_log ( context , config , 5 , \"target<S2SV_blank>%s<S2SV_blank>does<S2SV_blank>not<S2SV_blank>have<S2SV_blank>secrets<S2SV_blank>at<S2SV_blank>this<S2SV_blank>KDC,<S2SV_blank>need<S2SV_blank>to<S2SV_blank>proxy\" , sp ) ; goto out ; } else if ( ret == HDB_ERR_WRONG_REALM ) { free ( ref_realm ) ; ref_realm = strdup ( server -> entry . principal -> realm ) ; if ( ref_realm == NULL ) { ret = krb5_enomem ( context ) ; goto out ; } kdc_log ( context , config , 5 , \"Returning<S2SV_blank>a<S2SV_blank>referral<S2SV_blank>to<S2SV_blank>realm<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>\" \"server<S2SV_blank>%s.\" , ref_realm , spn ) ; krb5_free_principal ( context , sp ) ; sp = NULL ; ret = krb5_make_principal ( context , & sp , r , KRB5_TGS_NAME , ref_realm , NULL ) ; if ( ret ) goto out ; free ( spn ) ; spn = NULL ; ret = krb5_unparse_name ( context , sp , & spn ) ; if ( ret ) goto out ; goto server_lookup ; } else if ( ret ) { const char * new_rlm , * msg ; Realm req_rlm ; krb5_realm * realms ; if ( ( req_rlm = get_krbtgt_realm ( & sp -> name ) ) != NULL ) { if ( capath == NULL ) { ret = _krb5_find_capath ( context , tgt -> crealm , our_realm , req_rlm , TRUE , & capath , & num_capath ) ; if ( ret ) goto out ; } new_rlm = num_capath > 0 ? capath [ -- num_capath ] : NULL ; if ( new_rlm ) { kdc_log ( context , config , 5 , \"krbtgt<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>via<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>\" \"realm<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>found,<S2SV_blank>trying<S2SV_blank>%s\" , tgt -> crealm , our_realm , req_rlm , new_rlm ) ; free ( ref_realm ) ; ref_realm = strdup ( new_rlm ) ; if ( ref_realm == NULL ) { ret = krb5_enomem ( context ) ; goto out ; } krb5_free_principal ( context , sp ) ; sp = NULL ; krb5_make_principal ( context , & sp , r , KRB5_TGS_NAME , ref_realm , NULL ) ; free ( spn ) ; spn = NULL ; ret = krb5_unparse_name ( context , sp , & spn ) ; if ( ret ) goto out ; goto server_lookup ; } } else if ( need_referral ( context , config , & b -> kdc_options , sp , & realms ) ) { if ( strcmp ( realms [ 0 ] , sp -> realm ) != 0 ) { kdc_log ( context , config , 5 , \"Returning<S2SV_blank>a<S2SV_blank>referral<S2SV_blank>to<S2SV_blank>realm<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>\" \"server<S2SV_blank>%s<S2SV_blank>that<S2SV_blank>was<S2SV_blank>not<S2SV_blank>found\" , realms [ 0 ] , spn ) ; krb5_free_principal ( context , sp ) ; sp = NULL ; krb5_make_principal ( context , & sp , r , KRB5_TGS_NAME , realms [ 0 ] , NULL ) ; free ( spn ) ; spn = NULL ; ret = krb5_unparse_name ( context , sp , & spn ) ; if ( ret ) { krb5_free_host_realm ( context , realms ) ; goto out ; } free ( ref_realm ) ; ref_realm = strdup ( realms [ 0 ] ) ; krb5_free_host_realm ( context , realms ) ; goto server_lookup ; } krb5_free_host_realm ( context , realms ) ; } msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"Server<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>database:<S2SV_blank>%s:<S2SV_blank>%s\" , spn , msg ) ; krb5_free_error_message ( context , msg ) ; if ( ret == HDB_ERR_NOENTRY ) ret = KRB5KDC_ERR_S_PRINCIPAL_UNKNOWN ; goto out ; } if ( b -> kdc_options . canonicalize ) rsp = server -> entry . principal ; else rsp = sp ; { krb5_enctype etype ; if ( b -> kdc_options . enc_tkt_in_skey ) { size_t i ; ekey = & adtkt . key ; for ( i = 0 ; i < b -> etype . len ; i ++ ) if ( b -> etype . val [ i ] == adtkt . key . keytype ) break ; if ( i == b -> etype . len ) { kdc_log ( context , config , 0 , \"Addition<S2SV_blank>ticket<S2SV_blank>have<S2SV_blank>not<S2SV_blank>matching<S2SV_blank>etypes\" ) ; krb5_clear_error_message ( context ) ; ret = KRB5KDC_ERR_ETYPE_NOSUPP ; goto out ; } etype = b -> etype . val [ i ] ; kvno = 0 ; } else { Key * skey ; ret = _kdc_find_etype ( context , krb5_principal_is_krbtgt ( context , sp ) ? config -> tgt_use_strongest_session_key : config -> svc_use_strongest_session_key , FALSE , server , b -> etype . val , b -> etype . len , & etype , NULL ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Server<S2SV_blank>(%s)<S2SV_blank>has<S2SV_blank>no<S2SV_blank>support<S2SV_blank>for<S2SV_blank>etypes\" , spn ) ; goto out ; } ret = _kdc_get_preferred_key ( context , config , server , spn , NULL , & skey ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Server<S2SV_blank>(%s)<S2SV_blank>has<S2SV_blank>no<S2SV_blank>supported<S2SV_blank>etypes\" , spn ) ; goto out ; } ekey = & skey -> key ; kvno = server -> entry . kvno ; } ret = krb5_generate_random_keyblock ( context , etype , & sessionkey ) ; if ( ret ) goto out ; } ret = hdb_enctype2key ( context , & krbtgt -> entry , NULL , krbtgt_etype , & tkey_check ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Failed<S2SV_blank>to<S2SV_blank>find<S2SV_blank>key<S2SV_blank>for<S2SV_blank>krbtgt<S2SV_blank>PAC<S2SV_blank>check\" ) ; goto out ; } ret = krb5_make_principal ( context , & krbtgt_out_principal , our_realm , KRB5_TGS_NAME , our_realm , NULL ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>krbtgt<S2SV_blank>principal<S2SV_blank>name<S2SV_blank>object<S2SV_blank>for<S2SV_blank>\" \"authz-data<S2SV_blank>signatures\" ) ; goto out ; } ret = krb5_unparse_name ( context , krbtgt_out_principal , & krbtgt_out_n ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Failed<S2SV_blank>to<S2SV_blank>make<S2SV_blank>krbtgt<S2SV_blank>principal<S2SV_blank>name<S2SV_blank>object<S2SV_blank>for<S2SV_blank>\" \"authz-data<S2SV_blank>signatures\" ) ; goto out ; } ret = _kdc_db_fetch ( context , config , krbtgt_out_principal , HDB_F_GET_KRBTGT , NULL , NULL , & krbtgt_out ) ; if ( ret ) { char * ktpn = NULL ; ret = krb5_unparse_name ( context , krbtgt -> entry . principal , & ktpn ) ; kdc_log ( context , config , 0 , \"No<S2SV_blank>such<S2SV_blank>principal<S2SV_blank>%s<S2SV_blank>(needed<S2SV_blank>for<S2SV_blank>authz-data<S2SV_blank>signature<S2SV_blank>keys)<S2SV_blank>\" \"while<S2SV_blank>processing<S2SV_blank>TGS-REQ<S2SV_blank>for<S2SV_blank>service<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>krbtg<S2SV_blank>%s\" , krbtgt_out_n , spn , ( ret == 0 ) ? ktpn : \"<unknown>\" ) ; free ( ktpn ) ; ret = KRB5KRB_AP_ERR_NOT_US ; goto out ; } if ( strcmp ( krb5_principal_get_realm ( context , server -> entry . principal ) , krb5_principal_get_realm ( context , krbtgt_out -> entry . principal ) ) != 0 ) { char * ktpn ; ret = krb5_unparse_name ( context , krbtgt_out -> entry . principal , & ktpn ) ; kdc_log ( context , config , 0 , \"Request<S2SV_blank>with<S2SV_blank>wrong<S2SV_blank>krbtgt:<S2SV_blank>%s\" , ( ret == 0 ) ? ktpn : \"<unknown>\" ) ; if ( ret == 0 ) free ( ktpn ) ; ret = KRB5KRB_AP_ERR_NOT_US ; goto out ; } ret = _kdc_get_preferred_key ( context , config , krbtgt_out , krbtgt_out_n , NULL , & tkey_sign ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Failed<S2SV_blank>to<S2SV_blank>find<S2SV_blank>key<S2SV_blank>for<S2SV_blank>krbtgt<S2SV_blank>PAC<S2SV_blank>signature\" ) ; goto out ; } ret = hdb_enctype2key ( context , & krbtgt_out -> entry , NULL , tkey_sign -> key . keytype , & tkey_sign ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Failed<S2SV_blank>to<S2SV_blank>find<S2SV_blank>key<S2SV_blank>for<S2SV_blank>krbtgt<S2SV_blank>PAC<S2SV_blank>signature\" ) ; goto out ; } ret = _kdc_db_fetch ( context , config , cp , HDB_F_GET_CLIENT | flags , NULL , & clientdb , & client ) ; if ( ret == HDB_ERR_NOT_FOUND_HERE ) { } else if ( ret ) { const char * krbtgt_realm , * msg ; krbtgt_realm = krb5_principal_get_realm ( context , krbtgt_out -> entry . principal ) ; if ( strcmp ( krb5_principal_get_realm ( context , cp ) , krbtgt_realm ) == 0 ) { if ( ret == HDB_ERR_NOENTRY ) ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; kdc_log ( context , config , 1 , \"Client<S2SV_blank>no<S2SV_blank>longer<S2SV_blank>in<S2SV_blank>database:<S2SV_blank>%s\" , cpn ) ; goto out ; } msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 1 , \"Client<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>database:<S2SV_blank>%s\" , msg ) ; krb5_free_error_message ( context , msg ) ; } ret = check_PAC ( context , config , cp , NULL , client , server , krbtgt , & tkey_check -> key , ekey , & tkey_sign -> key , tgt , & rspac , & signedpath ) ; if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"Verify<S2SV_blank>PAC<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>%s\" , spn , cpn , from , msg ) ; krb5_free_error_message ( context , msg ) ; goto out ; } ret = check_KRB5SignedPath ( context , config , krbtgt , cp , tgt , & spp , & signedpath ) ; if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"KRB5SignedPath<S2SV_blank>check<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>%s\" , spn , cpn , from , msg ) ; krb5_free_error_message ( context , msg ) ; goto out ; } tp = cp ; tpn = cpn ; if ( client ) { const PA_DATA * sdata ; int i = 0 ; sdata = _kdc_find_padata ( req , & i , KRB5_PADATA_FOR_USER ) ; if ( sdata ) { krb5_crypto crypto ; krb5_data datack ; PA_S4U2Self self ; const char * str ; ret = decode_PA_S4U2Self ( sdata -> padata_value . data , sdata -> padata_value . length , & self , NULL ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Failed<S2SV_blank>to<S2SV_blank>decode<S2SV_blank>PA-S4U2Self\" ) ; goto out ; } ret = _krb5_s4u2self_to_checksumdata ( context , & self , & datack ) ; if ( ret ) goto out ; ret = krb5_crypto_init ( context , & tgt -> key , 0 , & crypto ) ; if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; free_PA_S4U2Self ( & self ) ; krb5_data_free ( & datack ) ; kdc_log ( context , config , 0 , \"krb5_crypto_init<S2SV_blank>failed:<S2SV_blank>%s\" , msg ) ; krb5_free_error_message ( context , msg ) ; goto out ; } ret = krb5_verify_checksum ( context , crypto , KRB5_KU_OTHER_CKSUM , datack . data , datack . length , & self . cksum ) ; krb5_data_free ( & datack ) ; krb5_crypto_destroy ( context , crypto ) ; if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; free_PA_S4U2Self ( & self ) ; kdc_log ( context , config , 0 , \"krb5_verify_checksum<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>S4U2Self:<S2SV_blank>%s\" , msg ) ; krb5_free_error_message ( context , msg ) ; goto out ; } ret = _krb5_principalname2krb5_principal ( context , & tp , self . name , self . realm ) ; free_PA_S4U2Self ( & self ) ; if ( ret ) goto out ; ret = krb5_unparse_name ( context , tp , & tpn ) ; if ( ret ) goto out ; if ( rspac . data ) { krb5_pac p = NULL ; krb5_data_free ( & rspac ) ; ret = _kdc_db_fetch ( context , config , tp , HDB_F_GET_CLIENT | flags , NULL , & s4u2self_impersonated_clientdb , & s4u2self_impersonated_client ) ; if ( ret ) { const char * msg ; if ( ret == HDB_ERR_NOENTRY ) ret = KRB5KDC_ERR_C_PRINCIPAL_UNKNOWN ; msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 1 , \"S2U4Self<S2SV_blank>principal<S2SV_blank>to<S2SV_blank>impersonate<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>database:<S2SV_blank>%s\" , tpn , msg ) ; krb5_free_error_message ( context , msg ) ; goto out ; } ret = _kdc_pac_generate ( context , s4u2self_impersonated_client , & p ) ; if ( ret ) { kdc_log ( context , config , 0 , \"PAC<S2SV_blank>generation<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>--<S2SV_blank>%s\" , tpn ) ; goto out ; } if ( p != NULL ) { ret = _krb5_pac_sign ( context , p , ticket -> ticket . authtime , s4u2self_impersonated_client -> entry . principal , ekey , & tkey_sign -> key , & rspac ) ; krb5_pac_free ( context , p ) ; if ( ret ) { kdc_log ( context , config , 0 , \"PAC<S2SV_blank>signing<S2SV_blank>failed<S2SV_blank>for<S2SV_blank>--<S2SV_blank>%s\" , tpn ) ; goto out ; } } } ret = check_s4u2self ( context , config , clientdb , client , sp ) ; if ( ret ) { kdc_log ( context , config , 0 , \"S4U2Self:<S2SV_blank>%s<S2SV_blank>is<S2SV_blank>not<S2SV_blank>allowed<S2SV_blank>\" \"to<S2SV_blank>impersonate<S2SV_blank>to<S2SV_blank>service<S2SV_blank>\" \"(tried<S2SV_blank>for<S2SV_blank>user<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>service<S2SV_blank>%s)\" , cpn , tpn , spn ) ; goto out ; } if ( client -> entry . flags . trusted_for_delegation ) { str = \"[forwardable]\" ; } else { b -> kdc_options . forwardable = 0 ; str = \"\" ; } kdc_log ( context , config , 0 , \"s4u2self<S2SV_blank>%s<S2SV_blank>impersonating<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>\" \"service<S2SV_blank>%s<S2SV_blank>%s\" , cpn , tpn , spn , str ) ; } } if ( client != NULL && b -> additional_tickets != NULL && b -> additional_tickets -> len != 0 && b -> kdc_options . enc_tkt_in_skey == 0 ) { int ad_signedpath = 0 ; Key * clientkey ; Ticket * t ; if ( ! signedpath ) { ret = KRB5KDC_ERR_BADOPTION ; kdc_log ( context , config , 0 , \"Constrained<S2SV_blank>delegation<S2SV_blank>done<S2SV_blank>on<S2SV_blank>service<S2SV_blank>ticket<S2SV_blank>%s/%s\" , cpn , spn ) ; goto out ; } t = & b -> additional_tickets -> val [ 0 ] ; ret = hdb_enctype2key ( context , & client -> entry , hdb_kvno2keys ( context , & client -> entry , t -> enc_part . kvno ? * t -> enc_part . kvno : 0 ) , t -> enc_part . etype , & clientkey ) ; if ( ret ) { ret = KRB5KDC_ERR_ETYPE_NOSUPP ; goto out ; } ret = krb5_decrypt_ticket ( context , t , & clientkey -> key , & adtkt , 0 ) ; if ( ret ) { kdc_log ( context , config , 0 , \"failed<S2SV_blank>to<S2SV_blank>decrypt<S2SV_blank>ticket<S2SV_blank>for<S2SV_blank>\" \"constrained<S2SV_blank>delegation<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>\" , cpn , spn ) ; goto out ; } ret = _krb5_principalname2krb5_principal ( context , & tp , adtkt . cname , adtkt . crealm ) ; if ( ret ) goto out ; ret = krb5_unparse_name ( context , tp , & tpn ) ; if ( ret ) goto out ; ret = _krb5_principalname2krb5_principal ( context , & dp , t -> sname , t -> realm ) ; if ( ret ) goto out ; ret = krb5_unparse_name ( context , dp , & dpn ) ; if ( ret ) goto out ; if ( adtkt . flags . forwardable == 0 ) { kdc_log ( context , config , 0 , \"Missing<S2SV_blank>forwardable<S2SV_blank>flag<S2SV_blank>on<S2SV_blank>ticket<S2SV_blank>for<S2SV_blank>\" \"constrained<S2SV_blank>delegation<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>as<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>\" , cpn , dpn , tpn , spn ) ; ret = KRB5KDC_ERR_BADOPTION ; goto out ; } ret = check_constrained_delegation ( context , config , clientdb , client , server , sp ) ; if ( ret ) { kdc_log ( context , config , 0 , \"constrained<S2SV_blank>delegation<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>as<S2SV_blank>%s<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>not<S2SV_blank>allowed\" , cpn , dpn , tpn , spn ) ; goto out ; } ret = verify_flags ( context , config , & adtkt , tpn ) ; if ( ret ) { goto out ; } krb5_data_free ( & rspac ) ; ret = check_PAC ( context , config , tp , dp , client , server , krbtgt , & clientkey -> key , ekey , & tkey_sign -> key , & adtkt , & rspac , & ad_signedpath ) ; if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"Verify<S2SV_blank>delegated<S2SV_blank>PAC<S2SV_blank>failed<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>client\" \"%s<S2SV_blank>(%s)<S2SV_blank>as<S2SV_blank>%s<S2SV_blank>from<S2SV_blank>%s<S2SV_blank>with<S2SV_blank>%s\" , spn , cpn , dpn , tpn , from , msg ) ; krb5_free_error_message ( context , msg ) ; goto out ; } ret = check_KRB5SignedPath ( context , config , krbtgt , cp , & adtkt , NULL , & ad_signedpath ) ; if ( ret ) { const char * msg = krb5_get_error_message ( context , ret ) ; kdc_log ( context , config , 0 , \"KRB5SignedPath<S2SV_blank>check<S2SV_blank>from<S2SV_blank>service<S2SV_blank>%s<S2SV_blank>failed<S2SV_blank>\" \"for<S2SV_blank>delegation<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s<S2SV_blank>(%s)\" \"from<S2SV_blank>%s<S2SV_blank>failed<S2SV_blank>with<S2SV_blank>%s\" , spn , tpn , dpn , cpn , from , msg ) ; krb5_free_error_message ( context , msg ) ; goto out ; } if ( ! ad_signedpath ) { ret = KRB5KDC_ERR_BADOPTION ; kdc_log ( context , config , 0 , \"Ticket<S2SV_blank>not<S2SV_blank>signed<S2SV_blank>with<S2SV_blank>PAC<S2SV_blank>nor<S2SV_blank>SignedPath<S2SV_blank>service<S2SV_blank>%s<S2SV_blank>failed<S2SV_blank>\" \"for<S2SV_blank>delegation<S2SV_blank>to<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>client<S2SV_blank>%s<S2SV_blank>(%s)\" \"from<S2SV_blank>%s\" , spn , tpn , dpn , cpn , from ) ; goto out ; } kdc_log ( context , config , 0 , \"constrained<S2SV_blank>delegation<S2SV_blank>for<S2SV_blank>%s<S2SV_blank>\" \"from<S2SV_blank>%s<S2SV_blank>(%s)<S2SV_blank>to<S2SV_blank>%s\" , tpn , cpn , dpn , spn ) ; } ret = kdc_check_flags ( context , config , client , cpn , server , spn , FALSE ) ; if ( ret ) goto out ; if ( ( b -> kdc_options . validate || b -> kdc_options . renew ) && ! krb5_principal_compare ( context , krbtgt -> entry . principal , server -> entry . principal ) ) { kdc_log ( context , config , 0 , \"Inconsistent<S2SV_blank>request.\" ) ; ret = KRB5KDC_ERR_SERVER_NOMATCH ; goto out ; } if ( ! _kdc_check_addresses ( context , config , tgt -> caddr , from_addr ) ) { ret = KRB5KRB_AP_ERR_BADADDR ; kdc_log ( context , config , 0 , \"Request<S2SV_blank>from<S2SV_blank>wrong<S2SV_blank>address\" ) ; goto out ; } if ( ref_realm ) { PA_DATA pa ; krb5_crypto crypto ; kdc_log ( context , config , 0 , \"Adding<S2SV_blank>server<S2SV_blank>referral<S2SV_blank>to<S2SV_blank>%s\" , ref_realm ) ; ret = krb5_crypto_init ( context , & sessionkey , 0 , & crypto ) ; if ( ret ) goto out ; ret = build_server_referral ( context , config , crypto , ref_realm , NULL , s , & pa . padata_value ) ; krb5_crypto_destroy ( context , crypto ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Failed<S2SV_blank>building<S2SV_blank>server<S2SV_blank>referral\" ) ; goto out ; } pa . padata_type = KRB5_PADATA_SERVER_REFERRAL ; ret = add_METHOD_DATA ( & enc_pa_data , & pa ) ; krb5_data_free ( & pa . padata_value ) ; if ( ret ) { kdc_log ( context , config , 0 , \"Add<S2SV_blank>server<S2SV_blank>referral<S2SV_blank>METHOD-DATA<S2SV_blank>failed\" ) ; goto out ; } } ret = tgs_make_reply ( context , config , b , tp , tgt , replykey , rk_is_subkey , ekey , & sessionkey , kvno , * auth_data , server , rsp , spn , client , cp , <S2SV_StartBug> krbtgt_out , <S2SV_EndBug> tkey_sign -> key . keytype , spp , & rspac , & enc_pa_data , e_text , reply ) ; out : if ( tpn != cpn ) free ( tpn ) ; free ( spn ) ; free ( cpn ) ; free ( dpn ) ; free ( krbtgt_out_n ) ; _krb5_free_capath ( context , capath ) ; krb5_data_free ( & rspac ) ; krb5_free_keyblock_contents ( context , & sessionkey ) ; if ( krbtgt_out ) _kdc_free_ent ( context , krbtgt_out ) ; if ( server ) _kdc_free_ent ( context , server ) ; if ( client ) _kdc_free_ent ( context , client ) ; if ( s4u2self_impersonated_client ) _kdc_free_ent ( context , s4u2self_impersonated_client ) ; if ( tp && tp != cp ) krb5_free_principal ( context , tp ) ; krb5_free_principal ( context , cp ) ; krb5_free_principal ( context , dp ) ; krb5_free_principal ( context , sp ) ; krb5_free_principal ( context , krbtgt_out_principal ) ; free ( ref_realm ) ; free_METHOD_DATA ( & enc_pa_data ) ; free_EncTicketPart ( & adtkt ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; krb5_data rspac ; const char * tgt_realm = krb5_principal_get_realm ( context , krbtgt -> entry . principal ) <S2SV_ModStart> , cp , tgt_realm ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10130\n\n```\nCWE-284 static int http_connect ( http_subtransport * t ) { int error ; if ( t -> connected && http_should_keep_alive ( & t -> parser ) && t -> parse_finished ) return 0 ; if ( t -> io ) { git_stream_close ( t -> io ) ; git_stream_free ( t -> io ) ; t -> io = NULL ; t -> connected = 0 ; } if ( t -> connection_data . use_ssl ) { error = git_tls_stream_new ( & t -> io , t -> connection_data . host , t -> connection_data . port ) ; } else { # ifdef GIT_CURL error = git_curl_stream_new ( & t -> io , t -> connection_data . host , t -> connection_data . port ) ; # else error = git_socket_stream_new ( & t -> io , t -> connection_data . host , t -> connection_data . port ) ; # endif } if ( error < 0 ) return error ; GITERR_CHECK_VERSION ( t -> io , GIT_STREAM_VERSION , \"git_stream\" ) ; apply_proxy_config ( t ) ; error = git_stream_connect ( t -> io ) ; if ( ( ! error || error == GIT_ECERTIFICATE ) && t -> owner -> certificate_check_cb != NULL && git_stream_is_encrypted ( t -> io ) ) { git_cert * cert ; <S2SV_StartBug> int is_valid ; <S2SV_EndBug> if ( ( error = git_stream_certificate ( & cert , t -> io ) ) < 0 ) return error ; <S2SV_StartBug> giterr_clear ( ) ; <S2SV_EndBug> is_valid = error != GIT_ECERTIFICATE ; error = t -> owner -> certificate_check_cb ( cert , is_valid , t -> connection_data . host , t -> owner -> message_cb_payload ) ; if ( error < 0 ) { if ( ! giterr_last ( ) ) giterr_set ( GITERR_NET , \"user<S2SV_blank>cancelled<S2SV_blank>certificate<S2SV_blank>check\" ) ; return error ; } } if ( error < 0 ) return error ; t -> connected = 1 ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; int is_valid = ( error == GIT_OK ) <S2SV_ModStart> giterr_clear ( ) <S2SV_ModEnd> ; error =\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-284(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-3839\n\n```\nCWE-284 int bta_co_rfc_data_outgoing_size ( void * user_data , int * size ) { pthread_mutex_lock ( & slot_lock ) ; uint32_t id = ( uintptr_t ) user_data ; int ret = false ; * size = 0 ; rfc_slot_t * slot = find_rfc_slot_by_id ( id ) ; if ( ! slot ) goto out ; <S2SV_StartBug> if ( ioctl ( slot -> fd , FIONREAD , size ) == 0 ) { <S2SV_EndBug> ret = true ; } else { LOG_ERROR ( \"%s<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>determine<S2SV_blank>bytes<S2SV_blank>remaining<S2SV_blank>to<S2SV_blank>be<S2SV_blank>read<S2SV_blank>on<S2SV_blank>fd<S2SV_blank>%d:<S2SV_blank>%s\" , __func__ , slot -> fd , strerror ( errno ) ) ; cleanup_rfc_slot ( slot ) ; } out : ; pthread_mutex_unlock ( & slot_lock ) ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( TEMP_FAILURE_RETRY ( <S2SV_ModStart> FIONREAD , size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-918(服务器端请求伪造(SSRF))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-15164\n\n```\nCWE-918 static int daemon_msg_open_req ( uint8 ver , struct daemon_slpars * pars , uint32 plen , char * source , size_t sourcelen ) { char errbuf [ PCAP_ERRBUF_SIZE ] ; char errmsgbuf [ PCAP_ERRBUF_SIZE ] ; pcap_t * fp ; int nread ; char sendbuf [ RPCAP_NETBUF_SIZE ] ; int sendbufidx = 0 ; struct rpcap_openreply * openreply ; if ( plen > sourcelen - 1 ) { pcap_snprintf ( errmsgbuf , PCAP_ERRBUF_SIZE , \"Source<S2SV_blank>string<S2SV_blank>too<S2SV_blank>long\" ) ; goto error ; } nread = sock_recv ( pars -> sockctrl , source , plen , SOCK_RECEIVEALL_YES | SOCK_EOF_IS_ERROR , errbuf , PCAP_ERRBUF_SIZE ) ; if ( nread == - 1 ) { rpcapd_log ( LOGPRIO_ERROR , \"Read<S2SV_blank>from<S2SV_blank>client<S2SV_blank>failed:<S2SV_blank>%s\" , errbuf ) ; return - 1 ; } source [ nread ] = '\\\\0' ; plen -= nread ; <S2SV_StartBug> if ( ( fp = pcap_open_live ( source , <S2SV_EndBug> 1500 , 0 , 1000 , errmsgbuf ) ) == NULL ) goto error ; if ( sock_bufferize ( NULL , sizeof ( struct rpcap_header ) , NULL , & sendbufidx , RPCAP_NETBUF_SIZE , SOCKBUF_CHECKONLY , errmsgbuf , PCAP_ERRBUF_SIZE ) == - 1 ) goto error ; rpcap_createhdr ( ( struct rpcap_header * ) sendbuf , ver , RPCAP_MSG_OPEN_REPLY , 0 , sizeof ( struct rpcap_openreply ) ) ; openreply = ( struct rpcap_openreply * ) & sendbuf [ sendbufidx ] ; if ( sock_bufferize ( NULL , sizeof ( struct rpcap_openreply ) , NULL , & sendbufidx , RPCAP_NETBUF_SIZE , SOCKBUF_CHECKONLY , errmsgbuf , PCAP_ERRBUF_SIZE ) == - 1 ) goto error ; memset ( openreply , 0 , sizeof ( struct rpcap_openreply ) ) ; openreply -> linktype = htonl ( pcap_datalink ( fp ) ) ; openreply -> tzoff = 0 ; pcap_close ( fp ) ; if ( sock_send ( pars -> sockctrl , sendbuf , sendbufidx , errbuf , PCAP_ERRBUF_SIZE ) == - 1 ) { rpcapd_log ( LOGPRIO_ERROR , \"Send<S2SV_blank>to<S2SV_blank>client<S2SV_blank>failed:<S2SV_blank>%s\" , errbuf ) ; return - 1 ; } return 0 ; error : if ( rpcap_senderror ( pars -> sockctrl , ver , PCAP_ERR_OPEN , errmsgbuf , errbuf ) == - 1 ) { rpcapd_log ( LOGPRIO_ERROR , \"Send<S2SV_blank>to<S2SV_blank>client<S2SV_blank>failed:<S2SV_blank>%s\" , errbuf ) ; return - 1 ; } if ( rpcapd_discard ( pars -> sockctrl , plen ) == - 1 ) { return - 1 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( is_url ( source ) ) { pcap_snprintf ( errmsgbuf , PCAP_ERRBUF_SIZE , \"Source<S2SV_blank>string<S2SV_blank>refers<S2SV_blank>to<S2SV_blank>a<S2SV_blank>remote<S2SV_blank>device\" ) ; goto error ; } if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-18408\n\n```\nCWE-416 static int archive_read_format_rar_read_data ( struct archive_read * a , const void * * buff , size_t * size , int64_t * offset ) { struct rar * rar = ( struct rar * ) ( a -> format -> data ) ; int ret ; if ( rar -> has_encrypted_entries == ARCHIVE_READ_FORMAT_ENCRYPTION_DONT_KNOW ) { rar -> has_encrypted_entries = 0 ; } if ( rar -> bytes_unconsumed > 0 ) { __archive_read_consume ( a , rar -> bytes_unconsumed ) ; rar -> bytes_unconsumed = 0 ; } * buff = NULL ; if ( rar -> entry_eof || rar -> offset_seek >= rar -> unp_size ) { * size = 0 ; * offset = rar -> offset ; if ( * offset < rar -> unp_size ) * offset = rar -> unp_size ; return ( ARCHIVE_EOF ) ; } switch ( rar -> compression_method ) { case COMPRESS_METHOD_STORE : ret = read_data_stored ( a , buff , size , offset ) ; break ; case COMPRESS_METHOD_FASTEST : case COMPRESS_METHOD_FAST : case COMPRESS_METHOD_NORMAL : case COMPRESS_METHOD_GOOD : case COMPRESS_METHOD_BEST : ret = read_data_compressed ( a , buff , size , offset ) ; <S2SV_StartBug> if ( ret != ARCHIVE_OK && ret != ARCHIVE_WARN ) <S2SV_EndBug> __archive_ppmd7_functions . Ppmd7_Free ( & rar -> ppmd7_context ) ; <S2SV_StartBug> break ; <S2SV_EndBug> default : archive_set_error ( & a -> archive , ARCHIVE_ERRNO_FILE_FORMAT , \"Unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>for<S2SV_blank>RAR<S2SV_blank>file.\" ) ; ret = ARCHIVE_FATAL ; break ; } return ( ret ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> != ARCHIVE_WARN ) { <S2SV_ModStart> ppmd7_context ) ; rar -> start_new_table = 1 ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-2918\n\n```\nCWE-400 void handle_stdfmna ( struct pt_regs * regs , unsigned long sfar , unsigned long sfsr ) { unsigned long pc = regs -> tpc ; unsigned long tstate = regs -> tstate ; u32 insn ; u64 value ; u8 freg ; int flag ; struct fpustate * f = FPUSTATE ; if ( tstate & TSTATE_PRIV ) die_if_kernel ( \"stdfmna<S2SV_blank>from<S2SV_blank>kernel\" , regs ) ; <S2SV_StartBug> perf_sw_event ( PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 , 0 , regs , sfar ) ; <S2SV_EndBug> if ( test_thread_flag ( TIF_32BIT ) ) pc = ( u32 ) pc ; if ( get_user ( insn , ( u32 __user * ) pc ) != - EFAULT ) { int asi = decode_asi ( insn , regs ) ; freg = ( ( insn >> 25 ) & 0x1e ) | ( ( insn >> 20 ) & 0x20 ) ; value = 0 ; flag = ( freg < 32 ) ? FPRS_DL : FPRS_DU ; if ( ( asi > ASI_SNFL ) || ( asi < ASI_P ) ) goto daex ; save_and_clear_fpu ( ) ; if ( current_thread_info ( ) -> fpsaved [ 0 ] & flag ) value = * ( u64 * ) & f -> regs [ freg ] ; switch ( asi ) { case ASI_P : case ASI_S : break ; case ASI_PL : case ASI_SL : value = __swab64p ( & value ) ; break ; default : goto daex ; } if ( put_user ( value >> 32 , ( u32 __user * ) sfar ) || __put_user ( ( u32 ) value , ( u32 __user * ) ( sfar + 4 ) ) ) goto daex ; } else { daex : if ( tlb_type == hypervisor ) sun4v_data_access_exception ( regs , sfar , sfsr ) ; else spitfire_data_access_exception ( regs , sfsr , sfar ) ; return ; } advance ( regs ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PERF_COUNT_SW_ALIGNMENT_FAULTS , 1 <S2SV_ModEnd> , regs ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 const vpx_codec_cx_pkt_t * vpx_codec_get_cx_data ( vpx_codec_ctx_t * ctx , vpx_codec_iter_t * iter ) { const vpx_codec_cx_pkt_t * pkt = NULL ; if ( ctx ) { if ( ! iter ) ctx -> err = VPX_CODEC_INVALID_PARAM ; else if ( ! ctx -> iface || ! ctx -> priv ) ctx -> err = VPX_CODEC_ERROR ; else if ( ! ( ctx -> iface -> caps & VPX_CODEC_CAP_ENCODER ) ) ctx -> err = VPX_CODEC_INCAPABLE ; else <S2SV_StartBug> pkt = ctx -> iface -> enc . get_cx_data ( ctx -> priv -> alg_priv , iter ) ; <S2SV_EndBug> } if ( pkt && pkt -> kind == VPX_CODEC_CX_FRAME_PKT ) { vpx_codec_priv_t * const priv = ctx -> priv ; char * const dst_buf = ( char * ) priv -> enc . cx_data_dst_buf . buf ; if ( dst_buf && pkt -> data . raw . buf != dst_buf && pkt -> data . raw . sz + priv -> enc . cx_data_pad_before + priv -> enc . cx_data_pad_after <= priv -> enc . cx_data_dst_buf . sz ) { vpx_codec_cx_pkt_t * modified_pkt = & priv -> enc . cx_data_pkt ; memcpy ( dst_buf + priv -> enc . cx_data_pad_before , pkt -> data . raw . buf , pkt -> data . raw . sz ) ; * modified_pkt = * pkt ; modified_pkt -> data . raw . buf = dst_buf ; modified_pkt -> data . raw . sz += priv -> enc . cx_data_pad_before + priv -> enc . cx_data_pad_after ; pkt = modified_pkt ; } if ( dst_buf == pkt -> data . raw . buf ) { priv -> enc . cx_data_dst_buf . buf = dst_buf + pkt -> data . raw . sz ; priv -> enc . cx_data_dst_buf . sz -= pkt -> data . raw . sz ; } } return pkt ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . get_cx_data ( get_alg_priv ( ctx ) <S2SV_ModEnd> , iter )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 int vp9_get_qindex ( const struct segmentation * seg , int segment_id , int base_qindex ) { <S2SV_StartBug> if ( vp9_segfeature_active ( seg , segment_id , SEG_LVL_ALT_Q ) ) { <S2SV_EndBug> <S2SV_StartBug> const int data = vp9_get_segdata ( seg , segment_id , SEG_LVL_ALT_Q ) ; <S2SV_EndBug> const int seg_qindex = seg -> abs_delta == SEGMENT_ABSDATA ? data : base_qindex + data ; return clamp ( seg_qindex , 0 , MAXQ ) ; } else { return base_qindex ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { if ( segfeature_active <S2SV_ModEnd> ( seg , <S2SV_ModStart> int data = get_segdata <S2SV_ModEnd> ( seg ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-77(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14357\n\n```\nCWE-77 void imap_munge_mbox_name ( struct ImapData * idata , char * dest , size_t dlen , const char * src ) { char * buf = mutt_str_strdup ( src ) ; imap_utf_encode ( idata , & buf ) ; <S2SV_StartBug> imap_quote_string ( dest , dlen , buf ) ; <S2SV_EndBug> FREE ( & buf ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> dlen , buf , false\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-20145\n\n```\nCWE-000 int config__parse_args ( struct mosquitto_db * db , struct mosquitto__config * config , int argc , char * argv [ ] ) { int i ; int port_tmp ; for ( i = 1 ; i < argc ; i ++ ) { if ( ! strcmp ( argv [ i ] , \"-c\" ) || ! strcmp ( argv [ i ] , \"--config-file\" ) ) { if ( i < argc - 1 ) { db -> config_file = argv [ i + 1 ] ; if ( config__read ( db , config , false ) ) { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>open<S2SV_blank>configuration<S2SV_blank>file.\" ) ; return MOSQ_ERR_INVAL ; } } else { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>-c<S2SV_blank>argument<S2SV_blank>given,<S2SV_blank>but<S2SV_blank>no<S2SV_blank>config<S2SV_blank>file<S2SV_blank>specified.\" ) ; return MOSQ_ERR_INVAL ; } i ++ ; } else if ( ! strcmp ( argv [ i ] , \"-d\" ) || ! strcmp ( argv [ i ] , \"--daemon\" ) ) { config -> daemon = true ; } else if ( ! strcmp ( argv [ i ] , \"-h\" ) || ! strcmp ( argv [ i ] , \"--help\" ) ) { print_usage ( ) ; return MOSQ_ERR_INVAL ; } else if ( ! strcmp ( argv [ i ] , \"-p\" ) || ! strcmp ( argv [ i ] , \"--port\" ) ) { if ( i < argc - 1 ) { port_tmp = atoi ( argv [ i + 1 ] ) ; if ( port_tmp < 1 || port_tmp > 65535 ) { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>Invalid<S2SV_blank>port<S2SV_blank>specified<S2SV_blank>(%d).\" , port_tmp ) ; return MOSQ_ERR_INVAL ; } else { if ( config -> default_listener . port ) { log__printf ( NULL , MOSQ_LOG_WARNING , \"Warning:<S2SV_blank>Default<S2SV_blank>listener<S2SV_blank>port<S2SV_blank>specified<S2SV_blank>multiple<S2SV_blank>times.<S2SV_blank>Only<S2SV_blank>the<S2SV_blank>latest<S2SV_blank>will<S2SV_blank>be<S2SV_blank>used.\" ) ; } config -> default_listener . port = port_tmp ; } } else { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>-p<S2SV_blank>argument<S2SV_blank>given,<S2SV_blank>but<S2SV_blank>no<S2SV_blank>port<S2SV_blank>specified.\" ) ; return MOSQ_ERR_INVAL ; } i ++ ; } else if ( ! strcmp ( argv [ i ] , \"-v\" ) || ! strcmp ( argv [ i ] , \"--verbose\" ) ) { db -> verbose = true ; } else { fprintf ( stderr , \"Error:<S2SV_blank>Unknown<S2SV_blank>option<S2SV_blank>\\'%s\\'.\\\\n\" , argv [ i ] ) ; print_usage ( ) ; return MOSQ_ERR_INVAL ; } } if ( config -> listener_count == 0 # ifdef WITH_TLS || config -> default_listener . cafile || config -> default_listener . capath || config -> default_listener . certfile || config -> default_listener . keyfile || config -> default_listener . ciphers || config -> default_listener . psk_hint || config -> default_listener . require_certificate || config -> default_listener . crlfile || config -> default_listener . use_identity_as_username || config -> default_listener . use_subject_as_username # endif || config -> default_listener . use_username_as_clientid || config -> default_listener . host || config -> default_listener . port || config -> default_listener . max_connections != - 1 || config -> default_listener . mount_point || config -> default_listener . protocol != mp_mqtt || config -> default_listener . socket_domain || config -> default_listener . security_options . password_file || config -> default_listener . security_options . psk_file || config -> default_listener . security_options . auth_plugin_config_count || config -> default_listener . security_options . allow_anonymous != - 1 ) { config -> listener_count ++ ; config -> listeners = mosquitto__realloc ( config -> listeners , sizeof ( struct mosquitto__listener ) * config -> listener_count ) ; if ( ! config -> listeners ) { log__printf ( NULL , MOSQ_LOG_ERR , \"Error:<S2SV_blank>Out<S2SV_blank>of<S2SV_blank>memory.\" ) ; return MOSQ_ERR_NOMEM ; } memset ( & config -> listeners [ config -> listener_count - 1 ] , 0 , sizeof ( struct mosquitto__listener ) ) ; if ( config -> default_listener . port ) { config -> listeners [ config -> listener_count - 1 ] . port = config -> default_listener . port ; } else { config -> listeners [ config -> listener_count - 1 ] . port = 1883 ; } if ( config -> default_listener . host ) { config -> listeners [ config -> listener_count - 1 ] . host = config -> default_listener . host ; } else { config -> listeners [ config -> listener_count - 1 ] . host = NULL ; } if ( config -> default_listener . mount_point ) { config -> listeners [ config -> listener_count - 1 ] . mount_point = config -> default_listener . mount_point ; } else { config -> listeners [ config -> listener_count - 1 ] . mount_point = NULL ; } config -> listeners [ config -> listener_count - 1 ] . max_connections = config -> default_listener . max_connections ; config -> listeners [ config -> listener_count - 1 ] . protocol = config -> default_listener . protocol ; config -> listeners [ config -> listener_count - 1 ] . socket_domain = config -> default_listener . socket_domain ; config -> listeners [ config -> listener_count - 1 ] . client_count = 0 ; config -> listeners [ config -> listener_count - 1 ] . socks = NULL ; config -> listeners [ config -> listener_count - 1 ] . sock_count = 0 ; config -> listeners [ config -> listener_count - 1 ] . client_count = 0 ; config -> listeners [ config -> listener_count - 1 ] . use_username_as_clientid = config -> default_listener . use_username_as_clientid ; # ifdef WITH_TLS config -> listeners [ config -> listener_count - 1 ] . tls_version = config -> default_listener . tls_version ; config -> listeners [ config -> listener_count - 1 ] . cafile = config -> default_listener . cafile ; config -> listeners [ config -> listener_count - 1 ] . capath = config -> default_listener . capath ; config -> listeners [ config -> listener_count - 1 ] . certfile = config -> default_listener . certfile ; config -> listeners [ config -> listener_count - 1 ] . keyfile = config -> default_listener . keyfile ; config -> listeners [ config -> listener_count - 1 ] . ciphers = config -> default_listener . ciphers ; config -> listeners [ config -> listener_count - 1 ] . psk_hint = config -> default_listener . psk_hint ; config -> listeners [ config -> listener_count - 1 ] . require_certificate = config -> default_listener . require_certificate ; config -> listeners [ config -> listener_count - 1 ] . ssl_ctx = NULL ; config -> listeners [ config -> listener_count - 1 ] . crlfile = config -> default_listener . crlfile ; config -> listeners [ config -> listener_count - 1 ] . use_identity_as_username = config -> default_listener . use_identity_as_username ; config -> listeners [ config -> listener_count - 1 ] . use_subject_as_username = config -> default_listener . use_subject_as_username ; # endif <S2SV_StartBug> config -> listeners [ config -> listener_count - 1 ] . security_options . password_file = config -> default_listener . security_options . password_file ; <S2SV_EndBug> config -> listeners [ config -> listener_count - 1 ] . security_options . psk_file = config -> default_listener . security_options . psk_file ; config -> listeners [ config -> listener_count - 1 ] . security_options . auth_plugin_configs = config -> default_listener . security_options . auth_plugin_configs ; config -> listeners [ config -> listener_count - 1 ] . security_options . auth_plugin_config_count = config -> default_listener . security_options . auth_plugin_config_count ; config -> listeners [ config -> listener_count - 1 ] . security_options . allow_anonymous = config -> default_listener . security_options . allow_anonymous ; } if ( ! config -> user ) { config -> user = \"mosquitto\" ; } if ( db -> verbose ) { config -> log_type = INT_MAX ; } return config__check ( config ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . security_options . acl_file = config -> default_listener . security_options . acl_file ; config -> listeners [ config -> listener_count - 1 ] . security_options .\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void yv12_extend_frame_bottom_c ( YV12_BUFFER_CONFIG * ybf ) { int i ; unsigned char * src_ptr1 , * src_ptr2 ; unsigned char * dest_ptr2 ; unsigned int Border ; int plane_stride ; int plane_height ; Border = ybf -> border ; plane_stride = ybf -> y_stride ; plane_height = ybf -> y_height ; src_ptr1 = ybf -> y_buffer - Border ; src_ptr2 = src_ptr1 + ( plane_height * plane_stride ) - plane_stride ; dest_ptr2 = src_ptr2 + plane_stride ; for ( i = 0 ; i < ( int ) Border ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dest_ptr2 , src_ptr2 , plane_stride ) ; <S2SV_EndBug> dest_ptr2 += plane_stride ; } plane_stride = ybf -> uv_stride ; plane_height = ybf -> uv_height ; Border /= 2 ; src_ptr1 = ybf -> u_buffer - Border ; src_ptr2 = src_ptr1 + ( plane_height * plane_stride ) - plane_stride ; dest_ptr2 = src_ptr2 + plane_stride ; for ( i = 0 ; i < ( int ) ( Border ) ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dest_ptr2 , src_ptr2 , plane_stride ) ; <S2SV_EndBug> dest_ptr2 += plane_stride ; } src_ptr1 = ybf -> v_buffer - Border ; src_ptr2 = src_ptr1 + ( plane_height * plane_stride ) - plane_stride ; dest_ptr2 = src_ptr2 + plane_stride ; for ( i = 0 ; i < ( int ) ( Border ) ; i ++ ) { <S2SV_StartBug> vpx_memcpy ( dest_ptr2 , src_ptr2 , plane_stride ) ; <S2SV_EndBug> dest_ptr2 += plane_stride ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dest_ptr2 , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dest_ptr2 , <S2SV_ModStart> ++ ) { memcpy <S2SV_ModEnd> ( dest_ptr2 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-9535\n\n```\nCWE-119 <S2SV_StartBug> static void <S2SV_EndBug> swabHorDiff32 ( TIFF * tif , uint8 * cp0 , tmsize_t cc ) { uint32 * wp = ( uint32 * ) cp0 ; tmsize_t wc = cc / 4 ; <S2SV_StartBug> horDiff32 ( tif , cp0 , cc ) ; <S2SV_EndBug> TIFFSwabArrayOfLong ( wp , wc ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> swabHorDiff32 ( TIFF <S2SV_ModStart> / 4 ; if ( ! <S2SV_ModStart> , cc ) ) return 0 <S2SV_ModStart> wc ) ; return 1 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-0590\n\n```\nCWE-119 IHEVCD_ERROR_T ihevcd_parse_sps ( codec_t * ps_codec ) { IHEVCD_ERROR_T ret = ( IHEVCD_ERROR_T ) IHEVCD_SUCCESS ; WORD32 value ; WORD32 i ; WORD32 vps_id ; WORD32 sps_max_sub_layers ; WORD32 sps_id ; WORD32 sps_temporal_id_nesting_flag ; sps_t * ps_sps ; profile_tier_lvl_info_t s_ptl ; bitstrm_t * ps_bitstrm = & ps_codec -> s_parse . s_bitstrm ; WORD32 ctb_log2_size_y = 0 ; BITS_PARSE ( \"video_parameter_set_id\" , value , ps_bitstrm , 4 ) ; vps_id = value ; vps_id = CLIP3 ( vps_id , 0 , MAX_VPS_CNT - 1 ) ; BITS_PARSE ( \"sps_max_sub_layers_minus1\" , value , ps_bitstrm , 3 ) ; sps_max_sub_layers = value + 1 ; sps_max_sub_layers = CLIP3 ( sps_max_sub_layers , 1 , 7 ) ; BITS_PARSE ( \"sps_temporal_id_nesting_flag\" , value , ps_bitstrm , 1 ) ; sps_temporal_id_nesting_flag = value ; ret = ihevcd_profile_tier_level ( ps_bitstrm , & ( s_ptl ) , 1 , ( sps_max_sub_layers - 1 ) ) ; UEV_PARSE ( \"seq_parameter_set_id\" , value , ps_bitstrm ) ; sps_id = value ; if ( ( sps_id >= MAX_SPS_CNT ) || ( sps_id < 0 ) ) { if ( ps_codec -> i4_sps_done ) return IHEVCD_UNSUPPORTED_SPS_ID ; else sps_id = 0 ; } ps_sps = ( ps_codec -> s_parse . ps_sps_base + MAX_SPS_CNT - 1 ) ; ps_sps -> i1_sps_id = sps_id ; ps_sps -> i1_vps_id = vps_id ; ps_sps -> i1_sps_max_sub_layers = sps_max_sub_layers ; ps_sps -> i1_sps_temporal_id_nesting_flag = sps_temporal_id_nesting_flag ; ps_codec -> i4_sps_id = sps_id ; memcpy ( & ps_sps -> s_ptl , & s_ptl , sizeof ( profile_tier_lvl_info_t ) ) ; UEV_PARSE ( \"chroma_format_idc\" , value , ps_bitstrm ) ; ps_sps -> i1_chroma_format_idc = value ; if ( ps_sps -> i1_chroma_format_idc != CHROMA_FMT_IDC_YUV420 ) { ps_codec -> s_parse . i4_error_code = IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC ; return ( IHEVCD_ERROR_T ) IHEVCD_UNSUPPORTED_CHROMA_FMT_IDC ; } if ( CHROMA_FMT_IDC_YUV444_PLANES == ps_sps -> i1_chroma_format_idc ) { BITS_PARSE ( \"separate_colour_plane_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_separate_colour_plane_flag = value ; } else { ps_sps -> i1_separate_colour_plane_flag = 0 ; } UEV_PARSE ( \"pic_width_in_luma_samples\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_width_in_luma_samples = value ; UEV_PARSE ( \"pic_height_in_luma_samples\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_height_in_luma_samples = value ; if ( ( 0 >= ps_sps -> i2_pic_width_in_luma_samples ) || ( 0 >= ps_sps -> i2_pic_height_in_luma_samples ) ) return IHEVCD_INVALID_PARAMETER ; ps_sps -> i2_pic_width_in_luma_samples = ALIGN8 ( ps_sps -> i2_pic_width_in_luma_samples ) ; ps_sps -> i2_pic_height_in_luma_samples = ALIGN8 ( ps_sps -> i2_pic_height_in_luma_samples ) ; BITS_PARSE ( \"pic_cropping_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_pic_cropping_flag = value ; if ( ps_sps -> i1_pic_cropping_flag ) { UEV_PARSE ( \"pic_crop_left_offset\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_crop_left_offset = value ; UEV_PARSE ( \"pic_crop_right_offset\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_crop_right_offset = value ; UEV_PARSE ( \"pic_crop_top_offset\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_crop_top_offset = value ; UEV_PARSE ( \"pic_crop_bottom_offset\" , value , ps_bitstrm ) ; ps_sps -> i2_pic_crop_bottom_offset = value ; } else { ps_sps -> i2_pic_crop_left_offset = 0 ; ps_sps -> i2_pic_crop_right_offset = 0 ; ps_sps -> i2_pic_crop_top_offset = 0 ; ps_sps -> i2_pic_crop_bottom_offset = 0 ; } UEV_PARSE ( \"bit_depth_luma_minus8\" , value , ps_bitstrm ) ; if ( 0 != value ) return IHEVCD_UNSUPPORTED_BIT_DEPTH ; UEV_PARSE ( \"bit_depth_chroma_minus8\" , value , ps_bitstrm ) ; if ( 0 != value ) return IHEVCD_UNSUPPORTED_BIT_DEPTH ; UEV_PARSE ( \"log2_max_pic_order_cnt_lsb_minus4\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_max_pic_order_cnt_lsb = value + 4 ; BITS_PARSE ( \"sps_sub_layer_ordering_info_present_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_sps_sub_layer_ordering_info_present_flag = value ; i = ( ps_sps -> i1_sps_sub_layer_ordering_info_present_flag ? 0 : ( ps_sps -> i1_sps_max_sub_layers - 1 ) ) ; for ( ; i < ps_sps -> i1_sps_max_sub_layers ; i ++ ) { UEV_PARSE ( \"max_dec_pic_buffering\" , value , ps_bitstrm ) ; ps_sps -> ai1_sps_max_dec_pic_buffering [ i ] = value + 1 ; if ( ps_sps -> ai1_sps_max_dec_pic_buffering [ i ] > MAX_DPB_SIZE ) { return IHEVCD_INVALID_PARAMETER ; } UEV_PARSE ( \"num_reorder_pics\" , value , ps_bitstrm ) ; ps_sps -> ai1_sps_max_num_reorder_pics [ i ] = value ; if ( ps_sps -> ai1_sps_max_num_reorder_pics [ i ] > ps_sps -> ai1_sps_max_dec_pic_buffering [ i ] ) { return IHEVCD_INVALID_PARAMETER ; } UEV_PARSE ( \"max_latency_increase\" , value , ps_bitstrm ) ; ps_sps -> ai1_sps_max_latency_increase [ i ] = value ; } UEV_PARSE ( \"log2_min_coding_block_size_minus3\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_min_coding_block_size = value + 3 ; UEV_PARSE ( \"log2_diff_max_min_coding_block_size\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_diff_max_min_coding_block_size = value ; ctb_log2_size_y = ps_sps -> i1_log2_min_coding_block_size + ps_sps -> i1_log2_diff_max_min_coding_block_size ; UEV_PARSE ( \"log2_min_transform_block_size_minus2\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_min_transform_block_size = value + 2 ; UEV_PARSE ( \"log2_diff_max_min_transform_block_size\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_diff_max_min_transform_block_size = value ; ps_sps -> i1_log2_max_transform_block_size = ps_sps -> i1_log2_min_transform_block_size + ps_sps -> i1_log2_diff_max_min_transform_block_size ; if ( ( ps_sps -> i1_log2_max_transform_block_size < 0 ) || ( ps_sps -> i1_log2_max_transform_block_size > MIN ( ctb_log2_size_y , 5 ) ) ) { return IHEVCD_INVALID_PARAMETER ; } ps_sps -> i1_log2_ctb_size = ps_sps -> i1_log2_min_coding_block_size + ps_sps -> i1_log2_diff_max_min_coding_block_size ; if ( ( ps_sps -> i1_log2_min_coding_block_size < 3 ) || ( ps_sps -> i1_log2_min_transform_block_size < 2 ) || ( ps_sps -> i1_log2_diff_max_min_transform_block_size < 0 ) || ( ps_sps -> i1_log2_max_transform_block_size > ps_sps -> i1_log2_ctb_size ) || ( ps_sps -> i1_log2_ctb_size < 4 ) || ( ps_sps -> i1_log2_ctb_size > 6 ) ) { return IHEVCD_INVALID_PARAMETER ; } ps_sps -> i1_log2_min_pcm_coding_block_size = 0 ; ps_sps -> i1_log2_diff_max_min_pcm_coding_block_size = 0 ; UEV_PARSE ( \"max_transform_hierarchy_depth_inter\" , value , ps_bitstrm ) ; ps_sps -> i1_max_transform_hierarchy_depth_inter = value ; UEV_PARSE ( \"max_transform_hierarchy_depth_intra\" , value , ps_bitstrm ) ; ps_sps -> i1_max_transform_hierarchy_depth_intra = value ; BITS_PARSE ( \"scaling_list_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_scaling_list_enable_flag = value ; if ( ps_sps -> i1_scaling_list_enable_flag ) { COPY_DEFAULT_SCALING_LIST ( ps_sps -> pi2_scaling_mat ) ; BITS_PARSE ( \"sps_scaling_list_data_present_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_sps_scaling_list_data_present_flag = value ; if ( ps_sps -> i1_sps_scaling_list_data_present_flag ) ihevcd_scaling_list_data ( ps_codec , ps_sps -> pi2_scaling_mat ) ; } else { COPY_FLAT_SCALING_LIST ( ps_sps -> pi2_scaling_mat ) ; } BITS_PARSE ( \"asymmetric_motion_partitions_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_amp_enabled_flag = value ; BITS_PARSE ( \"sample_adaptive_offset_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_sample_adaptive_offset_enabled_flag = value ; BITS_PARSE ( \"pcm_enabled_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_pcm_enabled_flag = value ; if ( ps_sps -> i1_pcm_enabled_flag ) { BITS_PARSE ( \"pcm_sample_bit_depth_luma\" , value , ps_bitstrm , 4 ) ; ps_sps -> i1_pcm_sample_bit_depth_luma = value + 1 ; BITS_PARSE ( \"pcm_sample_bit_depth_chroma\" , value , ps_bitstrm , 4 ) ; ps_sps -> i1_pcm_sample_bit_depth_chroma = value + 1 ; UEV_PARSE ( \"log2_min_pcm_coding_block_size_minus3\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_min_pcm_coding_block_size = value + 3 ; UEV_PARSE ( \"log2_diff_max_min_pcm_coding_block_size\" , value , ps_bitstrm ) ; ps_sps -> i1_log2_diff_max_min_pcm_coding_block_size = value ; BITS_PARSE ( \"pcm_loop_filter_disable_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_pcm_loop_filter_disable_flag = value ; } UEV_PARSE ( \"num_short_term_ref_pic_sets\" , value , ps_bitstrm ) ; ps_sps -> i1_num_short_term_ref_pic_sets = value ; ps_sps -> i1_num_short_term_ref_pic_sets = CLIP3 ( ps_sps -> i1_num_short_term_ref_pic_sets , 0 , MAX_STREF_PICS_SPS ) ; for ( i = 0 ; i < ps_sps -> i1_num_short_term_ref_pic_sets ; i ++ ) ihevcd_short_term_ref_pic_set ( ps_bitstrm , & ps_sps -> as_stref_picset [ 0 ] , ps_sps -> i1_num_short_term_ref_pic_sets , i , & ps_sps -> as_stref_picset [ i ] ) ; BITS_PARSE ( \"long_term_ref_pics_present_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_long_term_ref_pics_present_flag = value ; if ( ps_sps -> i1_long_term_ref_pics_present_flag ) { UEV_PARSE ( \"num_long_term_ref_pics_sps\" , value , ps_bitstrm ) ; ps_sps -> i1_num_long_term_ref_pics_sps = value ; for ( i = 0 ; i < ps_sps -> i1_num_long_term_ref_pics_sps ; i ++ ) { BITS_PARSE ( \"lt_ref_pic_poc_lsb_sps[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , ps_sps -> i1_log2_max_pic_order_cnt_lsb ) ; ps_sps -> ai1_lt_ref_pic_poc_lsb_sps [ i ] = value ; BITS_PARSE ( \"used_by_curr_pic_lt_sps_flag[<S2SV_blank>i<S2SV_blank>]\" , value , ps_bitstrm , 1 ) ; ps_sps -> ai1_used_by_curr_pic_lt_sps_flag [ i ] = value ; } } BITS_PARSE ( \"sps_temporal_mvp_enable_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_sps_temporal_mvp_enable_flag = value ; BITS_PARSE ( \"sps_strong_intra_smoothing_enable_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_strong_intra_smoothing_enable_flag = value ; BITS_PARSE ( \"vui_parameters_present_flag\" , value , ps_bitstrm , 1 ) ; ps_sps -> i1_vui_parameters_present_flag = value ; if ( ps_sps -> i1_vui_parameters_present_flag ) ihevcd_parse_vui_parameters ( ps_bitstrm , & ps_sps -> s_vui_parameters , ps_sps -> i1_sps_max_sub_layers - 1 ) ; BITS_PARSE ( \"sps_extension_flag\" , value , ps_bitstrm , 1 ) ; <S2SV_StartBug> { <S2SV_EndBug> WORD32 numerator ; WORD32 ceil_offset ; ceil_offset = ( 1 << ps_sps -> i1_log2_ctb_size ) - 1 ; numerator = ps_sps -> i2_pic_width_in_luma_samples ; ps_sps -> i2_pic_wd_in_ctb = ( ( numerator + ceil_offset ) / ( 1 << ps_sps -> i1_log2_ctb_size ) ) ; numerator = ps_sps -> i2_pic_height_in_luma_samples ; ps_sps -> i2_pic_ht_in_ctb = ( ( numerator + ceil_offset ) / ( 1 << ps_sps -> i1_log2_ctb_size ) ) ; ps_sps -> i4_pic_size_in_ctb = ps_sps -> i2_pic_ht_in_ctb * ps_sps -> i2_pic_wd_in_ctb ; if ( 0 == ps_codec -> i4_sps_done ) ps_codec -> s_parse . i4_next_ctb_indx = ps_sps -> i4_pic_size_in_ctb ; numerator = ps_sps -> i2_pic_width_in_luma_samples ; ps_sps -> i2_pic_wd_in_min_cb = numerator / ( 1 << ps_sps -> i1_log2_min_coding_block_size ) ; numerator = ps_sps -> i2_pic_height_in_luma_samples ; ps_sps -> i2_pic_ht_in_min_cb = numerator / ( 1 << ps_sps -> i1_log2_min_coding_block_size ) ; } if ( ( 0 != ps_codec -> i4_first_pic_done ) && ( ( ps_codec -> i4_wd != ps_sps -> i2_pic_width_in_luma_samples ) || ( ps_codec -> i4_ht != ps_sps -> i2_pic_height_in_luma_samples ) ) ) { ps_codec -> i4_reset_flag = 1 ; return ( IHEVCD_ERROR_T ) IVD_RES_CHANGED ; } { WORD32 disp_wd , disp_ht ; WORD32 crop_unit_x , crop_unit_y ; crop_unit_x = 1 ; crop_unit_y = 1 ; if ( CHROMA_FMT_IDC_YUV420 == ps_sps -> i1_chroma_format_idc ) { crop_unit_x = 2 ; crop_unit_y = 2 ; } disp_wd = ps_sps -> i2_pic_width_in_luma_samples ; disp_wd -= ps_sps -> i2_pic_crop_left_offset * crop_unit_x ; disp_wd -= ps_sps -> i2_pic_crop_right_offset * crop_unit_x ; disp_ht = ps_sps -> i2_pic_height_in_luma_samples ; disp_ht -= ps_sps -> i2_pic_crop_top_offset * crop_unit_y ; disp_ht -= ps_sps -> i2_pic_crop_bottom_offset * crop_unit_y ; if ( ( 0 >= disp_wd ) || ( 0 >= disp_ht ) ) return IHEVCD_INVALID_PARAMETER ; ps_codec -> i4_disp_wd = disp_wd ; ps_codec -> i4_disp_ht = disp_ht ; ps_codec -> i4_wd = ps_sps -> i2_pic_width_in_luma_samples ; ps_codec -> i4_ht = ps_sps -> i2_pic_height_in_luma_samples ; { WORD32 ref_strd ; ref_strd = ALIGN32 ( ps_sps -> i2_pic_width_in_luma_samples + PAD_WD ) ; if ( ps_codec -> i4_strd < ref_strd ) { ps_codec -> i4_strd = ref_strd ; } } if ( 0 == ps_codec -> i4_share_disp_buf ) { if ( ps_codec -> i4_disp_strd < ps_codec -> i4_disp_wd ) { ps_codec -> i4_disp_strd = ps_codec -> i4_disp_wd ; } } else { if ( ps_codec -> i4_disp_strd < ps_codec -> i4_strd ) { ps_codec -> i4_disp_strd = ps_codec -> i4_strd ; } } } ps_codec -> i4_sps_done = 1 ; return ret ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> 1 ) ; if ( ( UWORD8 * ) ps_bitstrm -> pu4_buf > ps_bitstrm -> pu1_buf_max ) { return IHEVCD_INVALID_PARAMETER ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-3647\n\n```\nCWE-264 static int __load_segment_descriptor ( struct x86_emulate_ctxt * ctxt , <S2SV_StartBug> u16 selector , int seg , u8 cpl , bool in_task_switch ) <S2SV_EndBug> { struct desc_struct seg_desc , old_desc ; u8 dpl , rpl ; unsigned err_vec = GP_VECTOR ; u32 err_code = 0 ; bool null_selector = ! ( selector & ~ 0x3 ) ; ulong desc_addr ; int ret ; u16 dummy ; u32 base3 = 0 ; memset ( & seg_desc , 0 , sizeof seg_desc ) ; if ( ctxt -> mode == X86EMUL_MODE_REAL ) { ctxt -> ops -> get_segment ( ctxt , & dummy , & seg_desc , NULL , seg ) ; set_desc_base ( & seg_desc , selector << 4 ) ; goto load ; } else if ( seg <= VCPU_SREG_GS && ctxt -> mode == X86EMUL_MODE_VM86 ) { set_desc_base ( & seg_desc , selector << 4 ) ; set_desc_limit ( & seg_desc , 0xffff ) ; seg_desc . type = 3 ; seg_desc . p = 1 ; seg_desc . s = 1 ; seg_desc . dpl = 3 ; goto load ; } rpl = selector & 3 ; if ( ( seg == VCPU_SREG_CS || ( seg == VCPU_SREG_SS && ( ctxt -> mode != X86EMUL_MODE_PROT64 || rpl != cpl ) ) || seg == VCPU_SREG_TR ) && null_selector ) goto exception ; if ( seg == VCPU_SREG_TR && ( selector & ( 1 << 2 ) ) ) goto exception ; if ( null_selector ) goto load ; ret = read_segment_descriptor ( ctxt , selector , & seg_desc , & desc_addr ) ; if ( ret != X86EMUL_CONTINUE ) return ret ; err_code = selector & 0xfffc ; err_vec = in_task_switch ? TS_VECTOR : GP_VECTOR ; if ( seg <= VCPU_SREG_GS && ! seg_desc . s ) goto exception ; if ( ! seg_desc . p ) { err_vec = ( seg == VCPU_SREG_SS ) ? SS_VECTOR : NP_VECTOR ; goto exception ; } dpl = seg_desc . dpl ; switch ( seg ) { case VCPU_SREG_SS : if ( rpl != cpl || ( seg_desc . type & 0xa ) != 0x2 || dpl != cpl ) goto exception ; break ; case VCPU_SREG_CS : if ( ! ( seg_desc . type & 8 ) ) goto exception ; if ( seg_desc . type & 4 ) { if ( dpl > cpl ) goto exception ; } else { if ( rpl > cpl || dpl != cpl ) goto exception ; } if ( seg_desc . d && seg_desc . l ) { u64 efer = 0 ; ctxt -> ops -> get_msr ( ctxt , MSR_EFER , & efer ) ; if ( efer & EFER_LMA ) goto exception ; } selector = ( selector & 0xfffc ) | cpl ; break ; case VCPU_SREG_TR : if ( seg_desc . s || ( seg_desc . type != 1 && seg_desc . type != 9 ) ) goto exception ; old_desc = seg_desc ; seg_desc . type |= 2 ; ret = ctxt -> ops -> cmpxchg_emulated ( ctxt , desc_addr , & old_desc , & seg_desc , sizeof ( seg_desc ) , & ctxt -> exception ) ; if ( ret != X86EMUL_CONTINUE ) return ret ; break ; case VCPU_SREG_LDTR : if ( seg_desc . s || seg_desc . type != 2 ) goto exception ; break ; default : if ( ( seg_desc . type & 0xa ) == 0x8 || ( ( ( seg_desc . type & 0xc ) != 0xc ) && ( rpl > dpl && cpl > dpl ) ) ) goto exception ; break ; } if ( seg_desc . s ) { seg_desc . type |= 1 ; ret = write_segment_descriptor ( ctxt , selector , & seg_desc ) ; if ( ret != X86EMUL_CONTINUE ) return ret ; } else if ( ctxt -> mode == X86EMUL_MODE_PROT64 ) { ret = ctxt -> ops -> read_std ( ctxt , desc_addr + 8 , & base3 , sizeof ( base3 ) , & ctxt -> exception ) ; if ( ret != X86EMUL_CONTINUE ) return ret ; } load : ctxt -> ops -> set_segment ( ctxt , selector , & seg_desc , base3 , seg ) ; <S2SV_StartBug> return X86EMUL_CONTINUE ; <S2SV_EndBug> exception : return emulate_exception ( ctxt , err_vec , err_code , true ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> , bool in_task_switch , struct desc_struct * desc <S2SV_ModStart> seg ) ; if ( desc ) * desc = seg_desc ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 <S2SV_StartBug> void vp9_encode_mv ( VP9_COMP * cpi , vp9_writer * w , <S2SV_EndBug> const MV * mv , const MV * ref , const nmv_context * mvctx , int usehp ) { const MV diff = { mv -> row - ref -> row , mv -> col - ref -> col } ; const MV_JOINT_TYPE j = vp9_get_mv_joint ( & diff ) ; usehp = usehp && vp9_use_mv_hp ( ref ) ; vp9_write_token ( w , vp9_mv_joint_tree , mvctx -> joints , & mv_joint_encodings [ j ] ) ; if ( mv_joint_vertical ( j ) ) encode_mv_component ( w , diff . row , & mvctx -> comps [ 0 ] , usehp ) ; if ( mv_joint_horizontal ( j ) ) encode_mv_component ( w , diff . col , & mvctx -> comps [ 1 ] , usehp ) ; <S2SV_StartBug> if ( ! cpi -> dummy_packing && cpi -> sf . auto_mv_step_size ) { <S2SV_EndBug> unsigned int maxv = MAX ( abs ( mv -> row ) , abs ( mv -> col ) ) >> 3 ; cpi -> max_mv_magnitude = MAX ( maxv , cpi -> max_mv_magnitude ) ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> * cpi , vpx_writer <S2SV_ModEnd> * w , <S2SV_ModStart> ; if ( <S2SV_ModEnd> cpi -> sf <S2SV_ModStart> cpi -> sf . mv\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2021-27815\n\n```\nCWE-476 static const char * escape_xml ( const char * text ) { static char * escaped ; static size_t escaped_size ; char * out ; size_t len ; <S2SV_StartBug> for ( out = escaped , len = 0 ; * text ; ++ len , ++ out , ++ text ) { <S2SV_EndBug> if ( ( len + 8 ) > escaped_size ) { char * bigger_escaped ; escaped_size += 128 ; bigger_escaped = realloc ( escaped , escaped_size ) ; if ( ! bigger_escaped ) { free ( escaped ) ; escaped = NULL ; escaped_size = 0 ; return \">>><S2SV_blank>out<S2SV_blank>of<S2SV_blank>memory<S2SV_blank><<<\" ; } out = bigger_escaped + len ; escaped = bigger_escaped ; } switch ( * text ) { case '&' : strcpy ( out , \"&amp;\" ) ; len += strlen ( out ) - 1 ; out = escaped + len ; break ; case '<' : strcpy ( out , \"&lt;\" ) ; len += strlen ( out ) - 1 ; out = escaped + len ; break ; case '>' : strcpy ( out , \"&gt;\" ) ; len += strlen ( out ) - 1 ; out = escaped + len ; break ; default : * out = * text ; break ; } } * out = '\\\\x0' ; return escaped ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size_t len ; if ( ! strlen ( text ) ) return \"empty<S2SV_blank>string\" ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp9_setup_past_independence ( VP9_COMMON * cm ) { struct loopfilter * const lf = & cm -> lf ; int i ; vp9_clearall_segfeatures ( & cm -> seg ) ; cm -> seg . abs_delta = SEGMENT_DELTADATA ; <S2SV_StartBug> if ( cm -> last_frame_seg_map ) <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( cm -> last_frame_seg_map , 0 , ( cm -> mi_rows * cm -> mi_cols ) ) ; <S2SV_EndBug> vp9_zero ( lf -> last_ref_deltas ) ; vp9_zero ( lf -> last_mode_deltas ) ; set_default_lf_deltas ( lf ) ; lf -> last_sharpness_level = - 1 ; vp9_default_coef_probs ( cm ) ; <S2SV_StartBug> vp9_init_mode_probs ( & cm -> fc ) ; <S2SV_EndBug> <S2SV_StartBug> vp9_init_mv_probs ( cm ) ; <S2SV_EndBug> if ( cm -> frame_type == KEY_FRAME || cm -> error_resilient_mode || cm -> reset_frame_context == 3 ) { for ( i = 0 ; i < FRAME_CONTEXTS ; ++ i ) <S2SV_StartBug> cm -> frame_contexts [ i ] = cm -> fc ; <S2SV_EndBug> } else if ( cm -> reset_frame_context == 2 ) { <S2SV_StartBug> cm -> frame_contexts [ cm -> frame_context_idx ] = cm -> fc ; <S2SV_EndBug> } <S2SV_StartBug> if ( frame_is_intra_only ( cm ) ) <S2SV_EndBug> <S2SV_StartBug> vpx_memset ( cm -> prev_mip , 0 , cm -> mi_stride * ( cm -> mi_rows + 1 ) * <S2SV_EndBug> <S2SV_StartBug> sizeof ( * cm -> prev_mip ) ) ; <S2SV_EndBug> vpx_memset ( cm -> mip , 0 , cm -> mi_stride * ( cm -> mi_rows + 1 ) * sizeof ( * cm -> mip ) ) ; vp9_zero ( cm -> ref_frame_sign_bias ) ; cm -> frame_context_idx = 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> cm -> last_frame_seg_map && ! cm -> frame_parallel_decode ) memset <S2SV_ModEnd> ( cm -> <S2SV_ModStart> cm -> last_frame_seg_map , 0 , ( cm -> mi_rows * cm -> mi_cols ) ) ; if ( cm -> current_frame_seg_map ) memset ( cm -> current_frame_seg_map <S2SV_ModStart> cm ) ; init_mode_probs ( <S2SV_ModEnd> cm -> fc <S2SV_ModStart> ( cm ) ; cm -> fc -> initialized = 1 <S2SV_ModStart> i ] = * <S2SV_ModStart> frame_context_idx ] = * <S2SV_ModStart> ( cm ) && <S2SV_ModEnd> cm -> prev_mip <S2SV_ModStart> cm -> prev_mip && ! cm -> frame_parallel_decode ) memset ( cm -> prev_mip , 0 , <S2SV_ModEnd> cm -> mi_stride <S2SV_ModStart> cm -> prev_mip <S2SV_ModEnd> ) ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-000(未分类漏洞)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2011-1927\n\n```\nCWE-000 static void ip_expire ( unsigned long arg ) { struct ipq * qp ; struct net * net ; qp = container_of ( ( struct inet_frag_queue * ) arg , struct ipq , q ) ; net = container_of ( qp -> q . net , struct net , ipv4 . frags ) ; spin_lock ( & qp -> q . lock ) ; if ( qp -> q . last_in & INET_FRAG_COMPLETE ) goto out ; ipq_kill ( qp ) ; IP_INC_STATS_BH ( net , IPSTATS_MIB_REASMTIMEOUT ) ; IP_INC_STATS_BH ( net , IPSTATS_MIB_REASMFAILS ) ; if ( ( qp -> q . last_in & INET_FRAG_FIRST_IN ) && qp -> q . fragments != NULL ) { struct sk_buff * head = qp -> q . fragments ; <S2SV_StartBug> rcu_read_lock ( ) ; <S2SV_EndBug> head -> dev = dev_get_by_index_rcu ( net , qp -> iif ) ; <S2SV_StartBug> if ( ! head -> dev ) <S2SV_EndBug> goto out_rcu_unlock ; <S2SV_StartBug> if ( qp -> user == IP_DEFRAG_CONNTRACK_IN && ! skb_dst ( head ) ) { <S2SV_EndBug> const struct iphdr * iph = ip_hdr ( head ) ; int err = ip_route_input ( head , iph -> daddr , iph -> saddr , iph -> tos , head -> dev ) ; if ( unlikely ( err ) ) goto out_rcu_unlock ; if ( skb_rtable ( head ) -> rt_type != RTN_LOCAL ) goto out_rcu_unlock ; <S2SV_StartBug> } <S2SV_EndBug> icmp_send ( head , ICMP_TIME_EXCEEDED , ICMP_EXC_FRAGTIME , 0 ) ; out_rcu_unlock : rcu_read_unlock ( ) ; } out : spin_unlock ( & qp -> q . lock ) ; ipq_put ( qp ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> . fragments ; const struct iphdr * iph ; int err ; <S2SV_ModStart> head -> dev ) goto out_rcu_unlock ; skb_dst_drop ( head ) ; iph = ip_hdr ( head ) ; err = ip_route_input_noref ( head , iph -> daddr , iph -> saddr , iph -> tos , head -> dev ) ; if ( err <S2SV_ModStart> == IP_DEFRAG_CONNTRACK_IN && <S2SV_ModEnd> skb_rtable ( head <S2SV_ModStart> goto out_rcu_unlock ; <S2SV_ModEnd> icmp_send ( head\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-14395\n\n```\nCWE-369 static int mov_write_audio_tag ( AVFormatContext * s , AVIOContext * pb , MOVMuxContext * mov , MOVTrack * track ) { int64_t pos = avio_tell ( pb ) ; int version = 0 ; uint32_t tag = track -> tag ; if ( track -> mode == MODE_MOV ) { <S2SV_StartBug> if ( track -> timescale > UINT16_MAX ) { <S2SV_EndBug> if ( mov_get_lpcm_flags ( track -> par -> codec_id ) ) tag = AV_RL32 ( \"lpcm\" ) ; version = 2 ; } else if ( track -> audio_vbr || mov_pcm_le_gt16 ( track -> par -> codec_id ) || mov_pcm_be_gt16 ( track -> par -> codec_id ) || track -> par -> codec_id == AV_CODEC_ID_ADPCM_MS || track -> par -> codec_id == AV_CODEC_ID_ADPCM_IMA_WAV || track -> par -> codec_id == AV_CODEC_ID_QDM2 ) { version = 1 ; } } avio_wb32 ( pb , 0 ) ; if ( mov -> encryption_scheme != MOV_ENC_NONE ) { ffio_wfourcc ( pb , \"enca\" ) ; } else { avio_wl32 ( pb , tag ) ; } avio_wb32 ( pb , 0 ) ; avio_wb16 ( pb , 0 ) ; avio_wb16 ( pb , 1 ) ; avio_wb16 ( pb , version ) ; avio_wb16 ( pb , 0 ) ; avio_wb32 ( pb , 0 ) ; if ( version == 2 ) { avio_wb16 ( pb , 3 ) ; avio_wb16 ( pb , 16 ) ; avio_wb16 ( pb , 0xfffe ) ; avio_wb16 ( pb , 0 ) ; avio_wb32 ( pb , 0x00010000 ) ; avio_wb32 ( pb , 72 ) ; avio_wb64 ( pb , av_double2int ( track -> par -> sample_rate ) ) ; avio_wb32 ( pb , track -> par -> channels ) ; avio_wb32 ( pb , 0x7F000000 ) ; avio_wb32 ( pb , av_get_bits_per_sample ( track -> par -> codec_id ) ) ; avio_wb32 ( pb , mov_get_lpcm_flags ( track -> par -> codec_id ) ) ; avio_wb32 ( pb , track -> sample_size ) ; avio_wb32 ( pb , get_samples_per_packet ( track ) ) ; } else { if ( track -> mode == MODE_MOV ) { avio_wb16 ( pb , track -> par -> channels ) ; if ( track -> par -> codec_id == AV_CODEC_ID_PCM_U8 || track -> par -> codec_id == AV_CODEC_ID_PCM_S8 ) avio_wb16 ( pb , 8 ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_ADPCM_G726 ) avio_wb16 ( pb , track -> par -> bits_per_coded_sample ) ; else avio_wb16 ( pb , 16 ) ; avio_wb16 ( pb , track -> audio_vbr ? - 2 : 0 ) ; } else { if ( track -> par -> codec_id == AV_CODEC_ID_FLAC || track -> par -> codec_id == AV_CODEC_ID_OPUS ) { avio_wb16 ( pb , track -> par -> channels ) ; } else { avio_wb16 ( pb , 2 ) ; } if ( track -> par -> codec_id == AV_CODEC_ID_FLAC ) { avio_wb16 ( pb , track -> par -> bits_per_raw_sample ) ; } else { avio_wb16 ( pb , 16 ) ; } avio_wb16 ( pb , 0 ) ; } avio_wb16 ( pb , 0 ) ; if ( track -> par -> codec_id == AV_CODEC_ID_OPUS ) avio_wb16 ( pb , 48000 ) ; else avio_wb16 ( pb , track -> par -> sample_rate <= UINT16_MAX ? track -> par -> sample_rate : 0 ) ; avio_wb16 ( pb , 0 ) ; } if ( version == 1 ) { if ( mov_pcm_le_gt16 ( track -> par -> codec_id ) || mov_pcm_be_gt16 ( track -> par -> codec_id ) ) avio_wb32 ( pb , 1 ) ; else avio_wb32 ( pb , track -> par -> frame_size ) ; avio_wb32 ( pb , track -> sample_size / track -> par -> channels ) ; avio_wb32 ( pb , track -> sample_size ) ; avio_wb32 ( pb , 2 ) ; } if ( track -> mode == MODE_MOV && ( track -> par -> codec_id == AV_CODEC_ID_AAC || track -> par -> codec_id == AV_CODEC_ID_AC3 || track -> par -> codec_id == AV_CODEC_ID_EAC3 || track -> par -> codec_id == AV_CODEC_ID_AMR_NB || track -> par -> codec_id == AV_CODEC_ID_ALAC || track -> par -> codec_id == AV_CODEC_ID_ADPCM_MS || track -> par -> codec_id == AV_CODEC_ID_ADPCM_IMA_WAV || track -> par -> codec_id == AV_CODEC_ID_QDM2 || ( mov_pcm_le_gt16 ( track -> par -> codec_id ) && version == 1 ) || ( mov_pcm_be_gt16 ( track -> par -> codec_id ) && version == 1 ) ) ) mov_write_wave_tag ( s , pb , track ) ; else if ( track -> tag == MKTAG ( 'm' , 'p' , '4' , 'a' ) ) mov_write_esds_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_AMR_NB ) mov_write_amr_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_AC3 ) mov_write_ac3_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_EAC3 ) mov_write_eac3_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_ALAC ) mov_write_extradata_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_WMAPRO ) mov_write_wfex_tag ( s , pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_FLAC ) mov_write_dfla_tag ( pb , track ) ; else if ( track -> par -> codec_id == AV_CODEC_ID_OPUS ) mov_write_dops_tag ( pb , track ) ; else if ( track -> vos_len > 0 ) mov_write_glbl_tag ( pb , track ) ; if ( track -> mode == MODE_MOV && track -> par -> codec_type == AVMEDIA_TYPE_AUDIO ) mov_write_chan_tag ( s , pb , track ) ; if ( mov -> encryption_scheme != MOV_ENC_NONE ) { ff_mov_cenc_write_sinf_tag ( track , pb , mov -> encryption_kid ) ; } return update_size ( pb , pos ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> timescale > UINT16_MAX || ! track -> par -> channels\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-10066\n\n```\nCWE-119 static Image * ReadBMPImage ( const ImageInfo * image_info , ExceptionInfo * exception ) { BMPInfo bmp_info ; Image * image ; IndexPacket index ; MagickBooleanType status ; MagickOffsetType offset , start_position ; MemoryInfo * pixel_info ; register IndexPacket * indexes ; register PixelPacket * q ; register ssize_t i , x ; register unsigned char * p ; size_t bit , blue , bytes_per_line , green , length , red ; ssize_t count , y ; unsigned char magick [ 12 ] , * pixels ; assert ( image_info != ( const ImageInfo * ) NULL ) ; assert ( image_info -> signature == MagickSignature ) ; if ( image_info -> debug != MagickFalse ) ( void ) LogMagickEvent ( TraceEvent , GetMagickModule ( ) , \"%s\" , image_info -> filename ) ; assert ( exception != ( ExceptionInfo * ) NULL ) ; assert ( exception -> signature == MagickSignature ) ; image = AcquireImage ( image_info ) ; status = OpenBlob ( image_info , image , ReadBinaryBlobMode , exception ) ; if ( status == MagickFalse ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } ( void ) ResetMagickMemory ( & bmp_info , 0 , sizeof ( bmp_info ) ) ; bmp_info . ba_offset = 0 ; start_position = 0 ; count = ReadBlob ( image , 2 , magick ) ; do { LongPixelPacket shift ; PixelPacket quantum_bits ; size_t profile_data , profile_size ; if ( bmp_info . ba_offset == 0 ) start_position = TellBlob ( image ) - 2 ; bmp_info . ba_offset = 0 ; while ( LocaleNCompare ( ( char * ) magick , \"BA\" , 2 ) == 0 ) { bmp_info . file_size = ReadBlobLSBLong ( image ) ; bmp_info . ba_offset = ReadBlobLSBLong ( image ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; count = ReadBlob ( image , 2 , magick ) ; if ( count != 2 ) break ; } if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Magick:<S2SV_blank>%c%c\" , magick [ 0 ] , magick [ 1 ] ) ; if ( ( count == 0 ) || ( ( LocaleNCompare ( ( char * ) magick , \"BM\" , 2 ) != 0 ) && ( LocaleNCompare ( ( char * ) magick , \"CI\" , 2 ) != 0 ) ) ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; bmp_info . file_size = ReadBlobLSBLong ( image ) ; ( void ) ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>File_size<S2SV_blank>in<S2SV_blank>header:<S2SV_blank><S2SV_blank>%u<S2SV_blank>bytes\" , bmp_info . file_size ) ; bmp_info . offset_bits = ReadBlobLSBLong ( image ) ; bmp_info . size = ReadBlobLSBLong ( image ) ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>BMP<S2SV_blank>size:<S2SV_blank>%u\" , bmp_info . size ) ; if ( bmp_info . size == 12 ) { ( void ) CopyMagickString ( image -> magick , \"BMP2\" , MaxTextExtent ) ; bmp_info . width = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . height = ( ssize_t ) ( ( short ) ReadBlobLSBShort ( image ) ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . x_pixels = 0 ; bmp_info . y_pixels = 0 ; bmp_info . number_colors = 0 ; bmp_info . compression = BI_RGB ; bmp_info . image_size = 0 ; bmp_info . alpha_mask = 0 ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>OS/2<S2SV_blank>Bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; } } else { if ( bmp_info . size < 40 ) ThrowReaderException ( CorruptImageError , \"NonOS2HeaderSizeError\" ) ; bmp_info . width = ( ssize_t ) ( ( int ) ReadBlobLSBLong ( image ) ) ; bmp_info . height = ( ssize_t ) ( ( int ) ReadBlobLSBLong ( image ) ) ; bmp_info . planes = ReadBlobLSBShort ( image ) ; bmp_info . bits_per_pixel = ReadBlobLSBShort ( image ) ; bmp_info . compression = ReadBlobLSBLong ( image ) ; bmp_info . image_size = ReadBlobLSBLong ( image ) ; bmp_info . x_pixels = ReadBlobLSBLong ( image ) ; bmp_info . y_pixels = ReadBlobLSBLong ( image ) ; bmp_info . number_colors = ReadBlobLSBLong ( image ) ; bmp_info . colors_important = ReadBlobLSBLong ( image ) ; profile_data = 0 ; profile_size = 0 ; if ( image -> debug != MagickFalse ) { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Format:<S2SV_blank>MS<S2SV_blank>Windows<S2SV_blank>bitmap\" ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Geometry:<S2SV_blank>%.20gx%.20g\" , ( double ) bmp_info . width , ( double ) bmp_info . height ) ; ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Bits<S2SV_blank>per<S2SV_blank>pixel:<S2SV_blank>%.20g\" , ( double ) bmp_info . bits_per_pixel ) ; switch ( ( int ) bmp_info . compression ) { case BI_RGB : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RGB\" ) ; break ; } case BI_RLE4 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE4\" ) ; break ; } case BI_RLE8 : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_RLE8\" ) ; break ; } case BI_BITFIELDS : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_BITFIELDS\" ) ; break ; } case BI_PNG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_PNG\" ) ; break ; } case BI_JPEG : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>BI_JPEG\" ) ; break ; } default : { ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Compression:<S2SV_blank>UNKNOWN<S2SV_blank>(%u)\" , bmp_info . compression ) ; } } ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Number<S2SV_blank>of<S2SV_blank>colors:<S2SV_blank>%u\" , bmp_info . number_colors ) ; } bmp_info . red_mask = ReadBlobLSBLong ( image ) ; bmp_info . green_mask = ReadBlobLSBLong ( image ) ; bmp_info . blue_mask = ReadBlobLSBLong ( image ) ; if ( bmp_info . size > 40 ) { double sum ; bmp_info . alpha_mask = ReadBlobLSBLong ( image ) ; bmp_info . colorspace = ( int ) ReadBlobLSBLong ( image ) ; # define BMP_DENOM ( ( double ) 0x40000000 ) bmp_info . red_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . red_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . green_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . x = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . y = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; bmp_info . blue_primary . z = ( double ) ReadBlobLSBLong ( image ) / BMP_DENOM ; sum = bmp_info . red_primary . x + bmp_info . red_primary . y + bmp_info . red_primary . z ; bmp_info . red_primary . x /= sum ; bmp_info . red_primary . y /= sum ; image -> chromaticity . red_primary . x = bmp_info . red_primary . x ; image -> chromaticity . red_primary . y = bmp_info . red_primary . y ; sum = bmp_info . green_primary . x + bmp_info . green_primary . y + bmp_info . green_primary . z ; bmp_info . green_primary . x /= sum ; bmp_info . green_primary . y /= sum ; image -> chromaticity . green_primary . x = bmp_info . green_primary . x ; image -> chromaticity . green_primary . y = bmp_info . green_primary . y ; sum = bmp_info . blue_primary . x + bmp_info . blue_primary . y + bmp_info . blue_primary . z ; bmp_info . blue_primary . x /= sum ; bmp_info . blue_primary . y /= sum ; image -> chromaticity . blue_primary . x = bmp_info . blue_primary . x ; image -> chromaticity . blue_primary . y = bmp_info . blue_primary . y ; bmp_info . gamma_scale . x = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . y = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; bmp_info . gamma_scale . z = ( double ) ReadBlobLSBLong ( image ) / 0x10000 ; image -> gamma = ( bmp_info . gamma_scale . x + bmp_info . gamma_scale . y + bmp_info . gamma_scale . z ) / 3.0 ; } else ( void ) CopyMagickString ( image -> magick , \"BMP3\" , MaxTextExtent ) ; if ( bmp_info . size > 108 ) { size_t intent ; intent = ReadBlobLSBLong ( image ) ; switch ( ( int ) intent ) { case LCS_GM_BUSINESS : { image -> rendering_intent = SaturationIntent ; break ; } case LCS_GM_GRAPHICS : { image -> rendering_intent = RelativeIntent ; break ; } case LCS_GM_IMAGES : { image -> rendering_intent = PerceptualIntent ; break ; } case LCS_GM_ABS_COLORIMETRIC : { image -> rendering_intent = AbsoluteIntent ; break ; } } profile_data = ReadBlobLSBLong ( image ) ; profile_size = ReadBlobLSBLong ( image ) ; ( void ) profile_data ; ( void ) profile_size ; ( void ) ReadBlobLSBLong ( image ) ; } } if ( ( MagickSizeType ) bmp_info . file_size > GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageError , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; else if ( ( MagickSizeType ) bmp_info . file_size < GetBlobSize ( image ) ) ( void ) ThrowMagickException ( exception , GetMagickModule ( ) , CorruptImageWarning , \"LengthAndFilesizeDoNotMatch\" , \"`%s\\'\" , image -> filename ) ; if ( bmp_info . width <= 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . height == 0 ) ThrowReaderException ( CorruptImageError , \"NegativeOrZeroImageSize\" ) ; if ( bmp_info . planes != 1 ) ThrowReaderException ( CorruptImageError , \"StaticPlanesValueNotEqualToOne\" ) ; if ( ( bmp_info . bits_per_pixel != 1 ) && ( bmp_info . bits_per_pixel != 4 ) && ( bmp_info . bits_per_pixel != 8 ) && ( bmp_info . bits_per_pixel != 16 ) && ( bmp_info . bits_per_pixel != 24 ) && ( bmp_info . bits_per_pixel != 32 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( bmp_info . bits_per_pixel < 16 && bmp_info . number_colors > ( 1U << bmp_info . bits_per_pixel ) ) { ThrowReaderException ( CorruptImageError , \"UnrecognizedNumberOfColors\" ) ; } if ( ( bmp_info . compression == 1 ) && ( bmp_info . bits_per_pixel != 8 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 2 ) && ( bmp_info . bits_per_pixel != 4 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; if ( ( bmp_info . compression == 3 ) && ( bmp_info . bits_per_pixel < 16 ) ) ThrowReaderException ( CorruptImageError , \"UnrecognizedBitsPerPixel\" ) ; switch ( bmp_info . compression ) { case BI_RGB : case BI_RLE8 : case BI_RLE4 : case BI_BITFIELDS : break ; case BI_JPEG : ThrowReaderException ( CoderError , \"JPEGCompressNotSupported\" ) ; case BI_PNG : ThrowReaderException ( CoderError , \"PNGCompressNotSupported\" ) ; default : ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } image -> columns = ( size_t ) MagickAbsoluteValue ( bmp_info . width ) ; image -> rows = ( size_t ) MagickAbsoluteValue ( bmp_info . height ) ; image -> depth = bmp_info . bits_per_pixel <= 8 ? bmp_info . bits_per_pixel : 8 ; image -> matte = ( ( bmp_info . alpha_mask != 0 ) && ( bmp_info . compression == BI_BITFIELDS ) ) || ( bmp_info . bits_per_pixel == 32 ) ? MagickTrue : MagickFalse ; if ( bmp_info . bits_per_pixel < 16 ) { size_t one ; image -> storage_class = PseudoClass ; image -> colors = bmp_info . number_colors ; one = 1 ; if ( image -> colors == 0 ) image -> colors = one << bmp_info . bits_per_pixel ; } if ( image -> storage_class == PseudoClass ) { unsigned char * bmp_colormap ; size_t packet_size ; if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>colormap<S2SV_blank>of<S2SV_blank>%.20g<S2SV_blank>colors\" , ( double ) image -> colors ) ; if ( AcquireImageColormap ( image , image -> colors ) == MagickFalse ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; bmp_colormap = ( unsigned char * ) AcquireQuantumMemory ( ( size_t ) image -> colors , 4 * sizeof ( * bmp_colormap ) ) ; if ( bmp_colormap == ( unsigned char * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; if ( ( bmp_info . size == 12 ) || ( bmp_info . size == 64 ) ) packet_size = 3 ; else packet_size = 4 ; offset = SeekBlob ( image , start_position + 14 + bmp_info . size , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; count = ReadBlob ( image , packet_size * image -> colors , bmp_colormap ) ; if ( count != ( ssize_t ) ( packet_size * image -> colors ) ) ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; p = bmp_colormap ; for ( i = 0 ; i < ( ssize_t ) image -> colors ; i ++ ) { image -> colormap [ i ] . blue = ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . green = ScaleCharToQuantum ( * p ++ ) ; image -> colormap [ i ] . red = ScaleCharToQuantum ( * p ++ ) ; if ( packet_size == 4 ) p ++ ; } bmp_colormap = ( unsigned char * ) RelinquishMagickMemory ( bmp_colormap ) ; } image -> x_resolution = ( double ) bmp_info . x_pixels / 100.0 ; image -> y_resolution = ( double ) bmp_info . y_pixels / 100.0 ; image -> units = PixelsPerCentimeterResolution ; if ( ( image_info -> ping != MagickFalse ) && ( image_info -> number_scenes != 0 ) ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) <S2SV_StartBug> break ; <S2SV_EndBug> offset = SeekBlob ( image , start_position + bmp_info . offset_bits , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; if ( bmp_info . compression == BI_RLE4 ) bmp_info . bits_per_pixel <<= 1 ; bytes_per_line = 4 * ( ( image -> columns * bmp_info . bits_per_pixel + 31 ) / 32 ) ; length = ( size_t ) bytes_per_line * image -> rows ; pixel_info = AcquireVirtualMemory ( ( size_t ) image -> rows , MagickMax ( bytes_per_line , image -> columns + 256UL ) * sizeof ( * pixels ) ) ; if ( pixel_info == ( MemoryInfo * ) NULL ) ThrowReaderException ( ResourceLimitError , \"MemoryAllocationFailed\" ) ; pixels = ( unsigned char * ) GetVirtualMemoryBlob ( pixel_info ) ; if ( ( bmp_info . compression == BI_RGB ) || ( bmp_info . compression == BI_BITFIELDS ) ) { if ( image -> debug != MagickFalse ) ( void ) LogMagickEvent ( CoderEvent , GetMagickModule ( ) , \"<S2SV_blank><S2SV_blank>Reading<S2SV_blank>pixels<S2SV_blank>(%.20g<S2SV_blank>bytes)\" , ( double ) length ) ; count = ReadBlob ( image , length , pixels ) ; if ( count != ( ssize_t ) length ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"InsufficientImageDataInFile\" ) ; } } else { status = DecodeImage ( image , bmp_info . compression , pixels ) ; if ( status == MagickFalse ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnableToRunlengthDecodeImage\" ) ; } } if ( bmp_info . compression == BI_RGB ) { bmp_info . alpha_mask = image -> matte != MagickFalse ? 0xff000000U : 0U ; bmp_info . red_mask = 0x00ff0000U ; bmp_info . green_mask = 0x0000ff00U ; bmp_info . blue_mask = 0x000000ffU ; if ( bmp_info . bits_per_pixel == 16 ) { bmp_info . red_mask = 0x00007c00U ; bmp_info . green_mask = 0x000003e0U ; bmp_info . blue_mask = 0x0000001fU ; } } if ( ( bmp_info . bits_per_pixel == 16 ) || ( bmp_info . bits_per_pixel == 32 ) ) { register size_t sample ; ( void ) ResetMagickMemory ( & shift , 0 , sizeof ( shift ) ) ; ( void ) ResetMagickMemory ( & quantum_bits , 0 , sizeof ( quantum_bits ) ) ; if ( bmp_info . red_mask != 0 ) while ( ( ( bmp_info . red_mask << shift . red ) & 0x80000000UL ) == 0 ) shift . red ++ ; if ( bmp_info . green_mask != 0 ) while ( ( ( bmp_info . green_mask << shift . green ) & 0x80000000UL ) == 0 ) shift . green ++ ; if ( bmp_info . blue_mask != 0 ) while ( ( ( bmp_info . blue_mask << shift . blue ) & 0x80000000UL ) == 0 ) shift . blue ++ ; if ( bmp_info . alpha_mask != 0 ) while ( ( ( bmp_info . alpha_mask << shift . opacity ) & 0x80000000UL ) == 0 ) shift . opacity ++ ; sample = shift . red ; while ( ( ( bmp_info . red_mask << sample ) & 0x80000000UL ) != 0 ) sample ++ ; quantum_bits . red = ClampToQuantum ( ( MagickRealType ) sample - shift . red ) ; sample = shift . green ; while ( ( ( bmp_info . green_mask << sample ) & 0x80000000UL ) != 0 ) sample ++ ; quantum_bits . green = ClampToQuantum ( ( MagickRealType ) sample - shift . green ) ; sample = shift . blue ; while ( ( ( bmp_info . blue_mask << sample ) & 0x80000000UL ) != 0 ) sample ++ ; quantum_bits . blue = ClampToQuantum ( ( MagickRealType ) sample - shift . blue ) ; sample = shift . opacity ; while ( ( ( bmp_info . alpha_mask << sample ) & 0x80000000UL ) != 0 ) sample ++ ; quantum_bits . opacity = ClampToQuantum ( ( MagickRealType ) sample - shift . opacity ) ; } switch ( bmp_info . bits_per_pixel ) { case 1 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 7 ) ; x += 8 ) { for ( bit = 0 ; bit < 8 ; bit ++ ) { index = ( IndexPacket ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( indexes + x + bit , index ) ; q ++ ; } p ++ ; } if ( ( image -> columns % 8 ) != 0 ) { for ( bit = 0 ; bit < ( image -> columns % 8 ) ; bit ++ ) { index = ( IndexPacket ) ( ( ( * p ) & ( 0x80 >> bit ) ) != 0 ? 0x01 : 0x00 ) ; SetPixelIndex ( indexes + x + bit , index ) ; } p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image ) ; break ; } case 4 : { for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = 0 ; x < ( ( ssize_t ) image -> columns - 1 ) ; x += 2 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0x0f ) ; SetPixelIndex ( indexes + x , index ) ; index = ConstrainColormapIndex ( image , * p & 0x0f ) ; SetPixelIndex ( indexes + x + 1 , index ) ; p ++ ; } if ( ( image -> columns % 2 ) != 0 ) { index = ConstrainColormapIndex ( image , ( * p >> 4 ) & 0xf ) ; SetPixelIndex ( indexes + x , index ) ; p ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image ) ; break ; } case 8 : { if ( ( bmp_info . compression == BI_RLE8 ) || ( bmp_info . compression == BI_RLE4 ) ) bytes_per_line = image -> columns ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; indexes = GetAuthenticIndexQueue ( image ) ; for ( x = ( ssize_t ) image -> columns ; x != 0 ; -- x ) { index = ConstrainColormapIndex ( image , * p ) ; SetPixelIndex ( indexes , index ) ; indexes ++ ; p ++ ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } ( void ) SyncImage ( image ) ; break ; } case 16 : { size_t alpha , pixel ; if ( bmp_info . compression != BI_RGB && bmp_info . compression != BI_BITFIELDS ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 2 * ( image -> columns + image -> columns % 2 ) ; image -> storage_class = DirectClass ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( size_t ) ( * p ++ ) ; pixel |= ( * p ++ ) << 8 ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 5 ) red |= ( ( red & 0xe000 ) >> 5 ) ; if ( quantum_bits . red <= 8 ) red |= ( ( red & 0xff00 ) >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 5 ) green |= ( ( green & 0xe000 ) >> 5 ) ; if ( quantum_bits . green == 6 ) green |= ( ( green & 0xc000 ) >> 6 ) ; if ( quantum_bits . green <= 8 ) green |= ( ( green & 0xff00 ) >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 5 ) blue |= ( ( blue & 0xe000 ) >> 5 ) ; if ( quantum_bits . blue <= 8 ) blue |= ( ( blue & 0xff00 ) >> 8 ) ; alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . opacity ) >> 16 ; if ( quantum_bits . opacity <= 8 ) alpha |= ( ( alpha & 0xff00 ) >> 8 ) ; SetPixelRed ( q , ScaleShortToQuantum ( ( unsigned short ) red ) ) ; SetPixelGreen ( q , ScaleShortToQuantum ( ( unsigned short ) green ) ) ; SetPixelBlue ( q , ScaleShortToQuantum ( ( unsigned short ) blue ) ) ; SetPixelOpacity ( q , OpaqueOpacity ) ; if ( image -> matte != MagickFalse ) SetPixelAlpha ( q , ScaleShortToQuantum ( ( unsigned short ) alpha ) ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 24 : { bytes_per_line = 4 * ( ( image -> columns * 24 + 31 ) / 32 ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { SetPixelBlue ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelGreen ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelRed ( q , ScaleCharToQuantum ( * p ++ ) ) ; SetPixelOpacity ( q , OpaqueOpacity ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } case 32 : { if ( ( bmp_info . compression != BI_RGB ) && ( bmp_info . compression != BI_BITFIELDS ) ) { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"UnrecognizedImageCompression\" ) ; } bytes_per_line = 4 * ( image -> columns ) ; for ( y = ( ssize_t ) image -> rows - 1 ; y >= 0 ; y -- ) { size_t alpha , pixel ; p = pixels + ( image -> rows - y - 1 ) * bytes_per_line ; q = QueueAuthenticPixels ( image , 0 , y , image -> columns , 1 , exception ) ; if ( q == ( PixelPacket * ) NULL ) break ; for ( x = 0 ; x < ( ssize_t ) image -> columns ; x ++ ) { pixel = ( size_t ) ( * p ++ ) ; pixel |= ( ( size_t ) * p ++ << 8 ) ; pixel |= ( ( size_t ) * p ++ << 16 ) ; pixel |= ( ( size_t ) * p ++ << 24 ) ; red = ( ( pixel & bmp_info . red_mask ) << shift . red ) >> 16 ; if ( quantum_bits . red == 8 ) red |= ( red >> 8 ) ; green = ( ( pixel & bmp_info . green_mask ) << shift . green ) >> 16 ; if ( quantum_bits . green == 8 ) green |= ( green >> 8 ) ; blue = ( ( pixel & bmp_info . blue_mask ) << shift . blue ) >> 16 ; if ( quantum_bits . blue == 8 ) blue |= ( blue >> 8 ) ; alpha = ( ( pixel & bmp_info . alpha_mask ) << shift . opacity ) >> 16 ; if ( quantum_bits . opacity == 8 ) alpha |= ( alpha >> 8 ) ; SetPixelRed ( q , ScaleShortToQuantum ( ( unsigned short ) red ) ) ; SetPixelGreen ( q , ScaleShortToQuantum ( ( unsigned short ) green ) ) ; SetPixelBlue ( q , ScaleShortToQuantum ( ( unsigned short ) blue ) ) ; SetPixelAlpha ( q , OpaqueOpacity ) ; if ( image -> matte != MagickFalse ) SetPixelAlpha ( q , ScaleShortToQuantum ( ( unsigned short ) alpha ) ) ; q ++ ; } if ( SyncAuthenticPixels ( image , exception ) == MagickFalse ) break ; offset = ( MagickOffsetType ) ( image -> rows - y - 1 ) ; if ( image -> previous == ( Image * ) NULL ) { status = SetImageProgress ( image , LoadImageTag , ( MagickOffsetType ) ( image -> rows - y ) , image -> rows ) ; if ( status == MagickFalse ) break ; } } break ; } default : { pixel_info = RelinquishVirtualMemory ( pixel_info ) ; ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } } pixel_info = RelinquishVirtualMemory ( pixel_info ) ; if ( EOFBlob ( image ) != MagickFalse ) { ThrowFileException ( exception , CorruptImageError , \"UnexpectedEndOfFile\" , image -> filename ) ; break ; } if ( bmp_info . height < 0 ) { Image * flipped_image ; flipped_image = FlipImage ( image , exception ) ; if ( flipped_image != ( Image * ) NULL ) { DuplicateBlob ( flipped_image , image ) ; image = DestroyImage ( image ) ; image = flipped_image ; } } if ( image_info -> number_scenes != 0 ) if ( image -> scene >= ( image_info -> scene + image_info -> number_scenes - 1 ) ) break ; * magick = '\\\\0' ; if ( bmp_info . ba_offset != 0 ) { offset = SeekBlob ( image , ( MagickOffsetType ) bmp_info . ba_offset , SEEK_SET ) ; if ( offset < 0 ) ThrowReaderException ( CorruptImageError , \"ImproperImageHeader\" ) ; } count = ReadBlob ( image , 2 , magick ) ; if ( ( count == 2 ) && ( IsBMP ( magick , 2 ) != MagickFalse ) ) { AcquireNextImage ( image_info , image ) ; if ( GetNextImageInList ( image ) == ( Image * ) NULL ) { image = DestroyImageList ( image ) ; return ( ( Image * ) NULL ) ; } image = SyncNextImageInList ( image ) ; status = SetImageProgress ( image , LoadImagesTag , TellBlob ( image ) , GetBlobSize ( image ) ) ; if ( status == MagickFalse ) break ; } } while ( IsBMP ( magick , 2 ) != MagickFalse ) ; ( void ) CloseBlob ( image ) ; return ( GetFirstImageInList ( image ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ) break ; status = SetImageExtent ( image , image -> columns , image -> rows ) ; if ( status == MagickFalse ) { InheritException ( exception , & image -> exception ) ; return ( DestroyImageList ( image ) ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-787(越界写入)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-9496\n\n```\nCWE-787 VOID ixheaacd_shiftrountine_with_rnd_hq ( WORD32 * qmf_real , WORD32 * qmf_imag , WORD32 * filter_states , WORD32 len , WORD32 shift ) { WORD32 * filter_states_rev = filter_states + len ; WORD32 treal , timag ; WORD32 j ; for ( j = ( len - 1 ) ; j >= 0 ; j -= 2 ) { WORD32 r1 , r2 , i1 , i2 ; i2 = qmf_imag [ j ] ; r2 = qmf_real [ j ] ; r1 = * qmf_real ++ ; i1 = * qmf_imag ++ ; <S2SV_StartBug> timag = ixheaacd_add32 ( i1 , r1 ) ; <S2SV_EndBug> timag = ( ixheaacd_shl32_sat ( timag , shift ) ) ; filter_states_rev [ j ] = timag ; <S2SV_StartBug> treal = ixheaacd_sub32 ( i2 , r2 ) ; <S2SV_EndBug> treal = ( ixheaacd_shl32_sat ( treal , shift ) ) ; filter_states [ j ] = treal ; treal = ixheaacd_sub32 ( i1 , r1 ) ; treal = ( ixheaacd_shl32_sat ( treal , shift ) ) ; * filter_states ++ = treal ; timag = ixheaacd_add32 ( i2 , r2 ) ; timag = ( ixheaacd_shl32_sat ( timag , shift ) ) ; * filter_states_rev ++ = timag ; } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; timag = ixheaacd_add32_sat <S2SV_ModEnd> ( i1 , <S2SV_ModStart> ; treal = ixheaacd_sub32_sat ( i2 , r2 ) ; treal = ( ixheaacd_shl32_sat ( treal , shift ) ) ; filter_states [ j ] = treal ; treal = ixheaacd_sub32_sat ( i1 , r1 ) ; treal = ( ixheaacd_shl32_sat ( treal , shift ) ) ; * filter_states ++ = treal ; timag = ixheaacd_add32_sat <S2SV_ModEnd> ( i2 ,\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 void vp8_yv12_extend_frame_borders_c ( YV12_BUFFER_CONFIG * ybf ) { <S2SV_StartBug> assert ( ybf -> y_height - ybf -> y_crop_height < 16 ) ; <S2SV_EndBug> assert ( ybf -> y_width - ybf -> y_crop_width < 16 ) ; assert ( ybf -> y_height - ybf -> y_crop_height >= 0 ) ; assert ( ybf -> y_width - ybf -> y_crop_width >= 0 ) ; <S2SV_StartBug> extend_plane ( ybf -> y_buffer , ybf -> y_stride , <S2SV_EndBug> ybf -> y_crop_width , ybf -> y_crop_height , ybf -> border , ybf -> border , ybf -> border + ybf -> y_height - ybf -> y_crop_height , ybf -> border + ybf -> y_width - ybf -> y_crop_width ) ; extend_plane ( ybf -> u_buffer , ybf -> uv_stride , <S2SV_StartBug> ( ybf -> y_crop_width + 1 ) / 2 , ( ybf -> y_crop_height + 1 ) / 2 , <S2SV_EndBug> ybf -> border / 2 , ybf -> border / 2 , ( ybf -> border + ybf -> y_height - ybf -> y_crop_height + 1 ) / 2 , ( ybf -> border + ybf -> y_width - ybf -> y_crop_width + 1 ) / 2 ) ; extend_plane ( ybf -> v_buffer , ybf -> uv_stride , <S2SV_StartBug> ( ybf -> y_crop_width + 1 ) / 2 , ( ybf -> y_crop_height + 1 ) / 2 , <S2SV_EndBug> ybf -> border / 2 , ybf -> border / 2 , ( ybf -> border + ybf -> y_height - ybf -> y_crop_height + 1 ) / 2 , ( ybf -> border + ybf -> y_width - ybf -> y_crop_width + 1 ) / 2 ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ybf ) { const int uv_border = ybf -> border / 2 ; assert ( ybf -> border % 2 == 0 ) ; <S2SV_ModStart> 0 ) ; # if CONFIG_VP9_HIGHBITDEPTH if ( ybf -> flags & YV12_FLAG_HIGHBITDEPTH ) { extend_plane_high ( ybf -> y_buffer , ybf -> y_stride , ybf -> y_crop_width , ybf -> y_crop_height , ybf -> border , ybf -> border , ybf -> border + ybf -> y_height - ybf -> y_crop_height , ybf -> border + ybf -> y_width - ybf -> y_crop_width ) ; extend_plane_high ( ybf -> u_buffer , ybf -> uv_stride , ybf -> uv_crop_width , ybf -> uv_crop_height , uv_border , uv_border , uv_border + ybf -> uv_height - ybf -> uv_crop_height , uv_border + ybf -> uv_width - ybf -> uv_crop_width ) ; extend_plane_high ( ybf -> v_buffer , ybf -> uv_stride , ybf -> uv_crop_width , ybf -> uv_crop_height , uv_border , uv_border , uv_border + ybf -> uv_height - ybf -> uv_crop_height , uv_border + ybf -> uv_width - ybf -> uv_crop_width ) ; return ; } # endif <S2SV_ModStart> -> uv_stride , ybf -> uv_crop_width , ybf -> uv_crop_height , uv_border , uv_border , uv_border + ybf -> uv_height - ybf -> uv_crop_height , uv_border + ybf -> uv_width - ybf -> uv_crop_width <S2SV_ModEnd> ) ; extend_plane <S2SV_ModStart> -> uv_stride , ybf -> uv_crop_width , ybf -> uv_crop_height , uv_border , uv_border , uv_border + ybf -> uv_height - ybf -> uv_crop_height , uv_border + ybf -> uv_width - ybf -> uv_crop_width <S2SV_ModEnd> ) ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-416(释放后使用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-16525\n\n```\nCWE-416 static int usb_console_setup ( struct console * co , char * options ) { struct usbcons_info * info = & usbcons_info ; int baud = 9600 ; int bits = 8 ; int parity = 'n' ; int doflow = 0 ; int cflag = CREAD | HUPCL | CLOCAL ; char * s ; struct usb_serial * serial ; struct usb_serial_port * port ; int retval ; struct tty_struct * tty = NULL ; struct ktermios dummy ; if ( options ) { baud = simple_strtoul ( options , NULL , 10 ) ; s = options ; while ( * s >= '0' && * s <= '9' ) s ++ ; if ( * s ) parity = * s ++ ; if ( * s ) bits = * s ++ - '0' ; if ( * s ) doflow = ( * s ++ == 'r' ) ; } if ( baud == 0 ) baud = 9600 ; switch ( bits ) { case 7 : cflag |= CS7 ; break ; default : case 8 : cflag |= CS8 ; break ; } switch ( parity ) { case 'o' : case 'O' : cflag |= PARODD ; break ; case 'e' : case 'E' : cflag |= PARENB ; break ; } co -> cflag = cflag ; port = usb_serial_port_get_by_minor ( co -> index ) ; if ( port == NULL ) { pr_err ( \"No<S2SV_blank>USB<S2SV_blank>device<S2SV_blank>connected<S2SV_blank>to<S2SV_blank>ttyUSB%i\\\\n\" , co -> index ) ; return - ENODEV ; } serial = port -> serial ; retval = usb_autopm_get_interface ( serial -> interface ) ; if ( retval ) goto error_get_interface ; tty_port_tty_set ( & port -> port , NULL ) ; info -> port = port ; ++ port -> port . count ; if ( ! tty_port_initialized ( & port -> port ) ) { if ( serial -> type -> set_termios ) { tty = kzalloc ( sizeof ( * tty ) , GFP_KERNEL ) ; if ( ! tty ) { retval = - ENOMEM ; goto reset_open_count ; } kref_init ( & tty -> kref ) ; tty -> driver = usb_serial_tty_driver ; tty -> index = co -> index ; init_ldsem ( & tty -> ldisc_sem ) ; spin_lock_init ( & tty -> files_lock ) ; INIT_LIST_HEAD ( & tty -> tty_files ) ; kref_get ( & tty -> driver -> kref ) ; __module_get ( tty -> driver -> owner ) ; tty -> ops = & usb_console_fake_tty_ops ; tty_init_termios ( tty ) ; tty_port_tty_set ( & port -> port , tty ) ; } retval = serial -> type -> open ( NULL , port ) ; if ( retval ) { dev_err ( & port -> dev , \"could<S2SV_blank>not<S2SV_blank>open<S2SV_blank>USB<S2SV_blank>console<S2SV_blank>port\\\\n\" ) ; goto fail ; } if ( serial -> type -> set_termios ) { tty -> termios . c_cflag = cflag ; tty_termios_encode_baud_rate ( & tty -> termios , baud , baud ) ; memset ( & dummy , 0 , sizeof ( struct ktermios ) ) ; serial -> type -> set_termios ( tty , port , & dummy ) ; tty_port_tty_set ( & port -> port , NULL ) ; tty_kref_put ( tty ) ; } tty_port_set_initialized ( & port -> port , 1 ) ; } -- port -> port . count ; port -> port . console = 1 ; mutex_unlock ( & serial -> disc_mutex ) ; return retval ; fail : tty_port_tty_set ( & port -> port , NULL ) ; tty_kref_put ( tty ) ; reset_open_count : port -> port . count = 0 ; <S2SV_StartBug> usb_autopm_put_interface ( serial -> interface ) ; <S2SV_EndBug> error_get_interface : usb_serial_put ( serial ) ; mutex_unlock ( & serial -> disc_mutex ) ; return retval ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; info -> port = NULL ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-7459\n\n```\nCWE-119 static ALGobject * ALGnew ( PyObject * self , PyObject * args , PyObject * kwdict ) { unsigned char * key , * IV ; ALGobject * new = NULL ; int keylen , IVlen = 0 , mode = MODE_ECB , segment_size = 0 ; PyObject * counter = NULL ; int counter_shortcut = 0 ; # ifdef PCT_ARC2_MODULE int effective_keylen = 1024 ; # endif if ( ! PyArg_ParseTupleAndKeywords ( args , kwdict , \"s#|is#Oi\" # ifdef PCT_ARC2_MODULE \"i\" # endif , kwlist , & key , & keylen , & mode , & IV , & IVlen , & counter , & segment_size # ifdef PCT_ARC2_MODULE , & effective_keylen # endif ) ) { return NULL ; } if ( mode < MODE_ECB || mode > MODE_CTR ) { PyErr_Format ( PyExc_ValueError , \"Unknown<S2SV_blank>cipher<S2SV_blank>feedback<S2SV_blank>mode<S2SV_blank>%i\" , mode ) ; return NULL ; } if ( mode == MODE_PGP ) { PyErr_Format ( PyExc_ValueError , \"MODE_PGP<S2SV_blank>is<S2SV_blank>not<S2SV_blank>supported<S2SV_blank>anymore\" ) ; return NULL ; } if ( KEY_SIZE != 0 && keylen != KEY_SIZE ) { PyErr_Format ( PyExc_ValueError , \"Key<S2SV_blank>must<S2SV_blank>be<S2SV_blank>%i<S2SV_blank>bytes<S2SV_blank>long,<S2SV_blank>not<S2SV_blank>%i\" , KEY_SIZE , keylen ) ; return NULL ; } if ( KEY_SIZE == 0 && keylen == 0 ) { PyErr_SetString ( PyExc_ValueError , <S2SV_StartBug> \"Key<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>the<S2SV_blank>null<S2SV_blank>string\" ) ; <S2SV_EndBug> return NULL ; } if ( IVlen != BLOCK_SIZE && mode != MODE_ECB && mode != MODE_CTR ) { PyErr_Format ( PyExc_ValueError , \"IV<S2SV_blank>must<S2SV_blank>be<S2SV_blank>%i<S2SV_blank>bytes<S2SV_blank>long\" , BLOCK_SIZE ) ; return NULL ; } if ( mode == MODE_CFB ) { if ( segment_size == 0 ) segment_size = 8 ; if ( segment_size < 1 || segment_size > BLOCK_SIZE * 8 || ( ( segment_size & 7 ) != 0 ) ) { PyErr_Format ( PyExc_ValueError , \"segment_size<S2SV_blank>must<S2SV_blank>be<S2SV_blank>multiple<S2SV_blank>of<S2SV_blank>8<S2SV_blank>(bits)<S2SV_blank>\" \"between<S2SV_blank>1<S2SV_blank>and<S2SV_blank>%i\" , BLOCK_SIZE * 8 ) ; return NULL ; } } if ( mode == MODE_CTR ) { if ( counter == NULL ) { PyErr_SetString ( PyExc_TypeError , \"\\'counter\\'<S2SV_blank>keyword<S2SV_blank>parameter<S2SV_blank>is<S2SV_blank>required<S2SV_blank>with<S2SV_blank>CTR<S2SV_blank>mode\" ) ; return NULL ; } else if ( Py_TYPE ( counter ) == PCT_CounterBEType || Py_TYPE ( counter ) == PCT_CounterLEType ) { counter_shortcut = 1 ; } else if ( ! PyCallable_Check ( counter ) ) { PyErr_SetString ( PyExc_ValueError , \"\\'counter\\'<S2SV_blank>parameter<S2SV_blank>must<S2SV_blank>be<S2SV_blank>a<S2SV_blank>callable<S2SV_blank>object\" ) ; return NULL ; } } else { if ( counter != NULL ) { PyErr_SetString ( PyExc_ValueError , \"\\'counter\\'<S2SV_blank>parameter<S2SV_blank>only<S2SV_blank>useful<S2SV_blank>with<S2SV_blank>CTR<S2SV_blank>mode\" ) ; return NULL ; } } # ifdef PCT_ARC2_MODULE if ( effective_keylen < 0 || effective_keylen > 1024 ) { PyErr_Format ( PyExc_ValueError , \"RC2:<S2SV_blank>effective_keylen<S2SV_blank>must<S2SV_blank>be<S2SV_blank>between<S2SV_blank>0<S2SV_blank>and<S2SV_blank>1024,<S2SV_blank>not<S2SV_blank>%i\" , effective_keylen ) ; return NULL ; } # endif new = newALGobject ( ) ; new -> segment_size = segment_size ; new -> counter = counter ; Py_XINCREF ( counter ) ; new -> counter_shortcut = counter_shortcut ; # ifdef PCT_ARC2_MODULE new -> st . effective_keylen = effective_keylen ; # endif block_init ( & ( new -> st ) , key , keylen ) ; if ( PyErr_Occurred ( ) ) { Py_DECREF ( new ) ; return NULL ; } memset ( new -> IV , 0 , BLOCK_SIZE ) ; memset ( new -> oldCipher , 0 , BLOCK_SIZE ) ; memcpy ( new -> IV , IV , IVlen ) ; new -> mode = mode ; new -> count = BLOCK_SIZE ; return new ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> PyExc_ValueError , \"Key<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>the<S2SV_blank>null<S2SV_blank>string\" ) ; return NULL ; } if ( IVlen != 0 && mode == MODE_ECB ) { PyErr_Format ( PyExc_ValueError , \"ECB<S2SV_blank>mode<S2SV_blank>does<S2SV_blank>not<S2SV_blank>use<S2SV_blank>IV\" ) ; return NULL ; } if ( IVlen != 0 && mode == MODE_CTR ) { PyErr_Format ( PyExc_ValueError , \"CTR<S2SV_blank>mode<S2SV_blank>needs<S2SV_blank>counter<S2SV_blank>parameter,<S2SV_blank>not<S2SV_blank>IV\"\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-10911\n\n```\nCWE-200 static void make_response ( struct xen_blkif_ring * ring , u64 id , unsigned short op , int st ) { <S2SV_StartBug> struct blkif_response resp ; <S2SV_EndBug> unsigned long flags ; union blkif_back_rings * blk_rings ; int notify ; <S2SV_StartBug> resp . id = id ; <S2SV_EndBug> resp . operation = op ; resp . status = st ; spin_lock_irqsave ( & ring -> blk_ring_lock , flags ) ; blk_rings = & ring -> blk_rings ; switch ( ring -> blkif -> blk_protocol ) { case BLKIF_PROTOCOL_NATIVE : <S2SV_StartBug> memcpy ( RING_GET_RESPONSE ( & blk_rings -> native , blk_rings -> native . rsp_prod_pvt ) , <S2SV_EndBug> & resp , sizeof ( resp ) ) ; break ; case BLKIF_PROTOCOL_X86_32 : <S2SV_StartBug> memcpy ( RING_GET_RESPONSE ( & blk_rings -> x86_32 , blk_rings -> x86_32 . rsp_prod_pvt ) , <S2SV_EndBug> & resp , sizeof ( resp ) ) ; break ; case BLKIF_PROTOCOL_X86_64 : <S2SV_StartBug> memcpy ( RING_GET_RESPONSE ( & blk_rings -> x86_64 , blk_rings -> x86_64 . rsp_prod_pvt ) , <S2SV_EndBug> & resp , sizeof ( resp ) ) ; break ; default : BUG ( ) ; <S2SV_StartBug> } <S2SV_EndBug> blk_rings -> common . rsp_prod_pvt ++ ; RING_PUSH_RESPONSES_AND_CHECK_NOTIFY ( & blk_rings -> common , notify ) ; spin_unlock_irqrestore ( & ring -> blk_ring_lock , flags ) ; if ( notify ) notify_remote_via_irq ( ring -> irq ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> { struct blkif_response * <S2SV_ModStart> int notify ; <S2SV_ModEnd> spin_lock_irqsave ( & <S2SV_ModStart> case BLKIF_PROTOCOL_NATIVE : resp = <S2SV_ModEnd> RING_GET_RESPONSE ( & <S2SV_ModStart> native . rsp_prod_pvt <S2SV_ModEnd> ) ; break <S2SV_ModStart> case BLKIF_PROTOCOL_X86_32 : resp = <S2SV_ModEnd> RING_GET_RESPONSE ( & <S2SV_ModStart> x86_32 . rsp_prod_pvt <S2SV_ModEnd> ) ; break <S2SV_ModStart> case BLKIF_PROTOCOL_X86_64 : resp = <S2SV_ModEnd> RING_GET_RESPONSE ( & <S2SV_ModStart> . rsp_prod_pvt ) <S2SV_ModEnd> ; break ; <S2SV_ModStart> ) ; } resp -> id = id ; resp -> operation = op ; resp -> status = st ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-476(空指针解引用)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2020-23932\n\n```\nCWE-476 void dump_isom_sdp ( GF_ISOFile * file , char * inName , Bool is_final_name ) { const char * sdp ; u32 size , i ; FILE * dump ; if ( inName ) { char szBuf [ 1024 ] ; strcpy ( szBuf , inName ) ; if ( ! is_final_name ) { char * ext = strchr ( szBuf , '.' ) ; if ( ext ) ext [ 0 ] = 0 ; strcat ( szBuf , \"_sdp.txt\" ) ; } dump = gf_fopen ( szBuf , \"wt\" ) ; if ( ! dump ) { fprintf ( stderr , \"Failed<S2SV_blank>to<S2SV_blank>open<S2SV_blank>%s<S2SV_blank>for<S2SV_blank>dumping\\\\n\" , szBuf ) ; return ; } } else { dump = stdout ; fprintf ( dump , \"*<S2SV_blank>File<S2SV_blank>SDP<S2SV_blank>content<S2SV_blank>*\\\\n\\\\n\" ) ; } gf_isom_sdp_get ( file , & sdp , & size ) ; <S2SV_StartBug> fprintf ( dump , \"%s\" , sdp ) ; <S2SV_EndBug> fprintf ( dump , \"\\\\r\\\\n\" ) ; for ( i = 0 ; i < gf_isom_get_track_count ( file ) ; i ++ ) { if ( gf_isom_get_media_type ( file , i + 1 ) != GF_ISOM_MEDIA_HINT ) continue ; gf_isom_sdp_track_get ( file , i + 1 , & sdp , & size ) ; fprintf ( dump , \"%s\" , sdp ) ; } fprintf ( dump , \"\\\\n\\\\n\" ) ; if ( inName ) gf_fclose ( dump ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> size ) ; if ( sdp && size )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-908(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2019-19947\n\n```\nCWE-908 static int kvaser_usb_leaf_flush_queue ( struct kvaser_usb_net_priv * priv ) { struct kvaser_cmd * cmd ; int rc ; <S2SV_StartBug> cmd = kmalloc ( sizeof ( * cmd ) , GFP_KERNEL ) ; <S2SV_EndBug> if ( ! cmd ) return - ENOMEM ; cmd -> id = CMD_FLUSH_QUEUE ; cmd -> len = CMD_HEADER_LEN + sizeof ( struct kvaser_cmd_flush_queue ) ; cmd -> u . flush_queue . channel = priv -> channel ; cmd -> u . flush_queue . flags = 0x00 ; rc = kvaser_usb_send_cmd ( priv -> dev , cmd , cmd -> len ) ; kfree ( cmd ) ; return rc ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; cmd = kzalloc <S2SV_ModEnd> ( sizeof (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-617(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-8012\n\n```\nCWE-617 static int _lldp_send ( struct lldpd * global , struct lldpd_hardware * hardware , u_int8_t c_id_subtype , char * c_id , int c_id_len , u_int8_t p_id_subtype , char * p_id , int p_id_len , int shutdown ) { struct lldpd_port * port ; struct lldpd_chassis * chassis ; struct lldpd_frame * frame ; int length ; u_int8_t * packet , * pos , * tlv ; struct lldpd_mgmt * mgmt ; int proto ; u_int8_t mcastaddr [ ] = LLDP_MULTICAST_ADDR ; # ifdef ENABLE_DOT1 const u_int8_t dot1 [ ] = LLDP_TLV_ORG_DOT1 ; struct lldpd_vlan * vlan ; struct lldpd_ppvid * ppvid ; struct lldpd_pi * pi ; # endif # ifdef ENABLE_DOT3 const u_int8_t dot3 [ ] = LLDP_TLV_ORG_DOT3 ; # endif # ifdef ENABLE_LLDPMED int i ; const u_int8_t med [ ] = LLDP_TLV_ORG_MED ; # endif # ifdef ENABLE_CUSTOM struct lldpd_custom * custom ; # endif port = & hardware -> h_lport ; chassis = port -> p_chassis ; length = hardware -> h_mtu ; if ( ( packet = ( u_int8_t * ) calloc ( 1 , length ) ) == NULL ) return ENOMEM ; pos = packet ; if ( ! ( POKE_BYTES ( mcastaddr , sizeof ( mcastaddr ) ) && POKE_BYTES ( & hardware -> h_lladdr , ETHER_ADDR_LEN ) && POKE_UINT16 ( ETHERTYPE_LLDP ) ) ) goto toobig ; if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_CHASSIS_ID ) && POKE_UINT8 ( c_id_subtype ) && POKE_BYTES ( c_id , c_id_len ) && POKE_END_LLDP_TLV ) ) goto toobig ; if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_PORT_ID ) && POKE_UINT8 ( p_id_subtype ) && POKE_BYTES ( p_id , p_id_len ) && POKE_END_LLDP_TLV ) ) goto toobig ; if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_TTL ) && POKE_UINT16 ( shutdown ? 0 : chassis -> c_ttl ) && POKE_END_LLDP_TLV ) ) goto toobig ; if ( shutdown ) goto end ; if ( chassis -> c_name && * chassis -> c_name != '\\\\0' ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_SYSTEM_NAME ) && POKE_BYTES ( chassis -> c_name , strlen ( chassis -> c_name ) ) && POKE_END_LLDP_TLV ) ) goto toobig ; } if ( chassis -> c_descr && * chassis -> c_descr != '\\\\0' ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_SYSTEM_DESCR ) && POKE_BYTES ( chassis -> c_descr , strlen ( chassis -> c_descr ) ) && POKE_END_LLDP_TLV ) ) goto toobig ; } if ( global -> g_config . c_cap_advertise && chassis -> c_cap_available ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_SYSTEM_CAP ) && POKE_UINT16 ( chassis -> c_cap_available ) && POKE_UINT16 ( chassis -> c_cap_enabled ) && POKE_END_LLDP_TLV ) ) goto toobig ; } TAILQ_FOREACH ( mgmt , & chassis -> c_mgmt , m_entries ) { proto = lldpd_af_to_lldp_proto ( mgmt -> m_family ) ; <S2SV_StartBug> assert ( proto != LLDP_MGMT_ADDR_NONE ) ; <S2SV_EndBug> if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_MGMT_ADDR ) && POKE_UINT8 ( mgmt -> m_addrsize + 1 ) && POKE_UINT8 ( proto ) && POKE_BYTES ( & mgmt -> m_addr , mgmt -> m_addrsize ) ) ) goto toobig ; if ( mgmt -> m_iface == 0 ) { if ( ! ( POKE_UINT8 ( LLDP_MGMT_IFACE_UNKNOWN ) && POKE_UINT32 ( 0 ) ) ) goto toobig ; } else { if ( ! ( POKE_UINT8 ( LLDP_MGMT_IFACE_IFINDEX ) && POKE_UINT32 ( mgmt -> m_iface ) ) ) goto toobig ; } if ( ! ( POKE_UINT8 ( 0 ) && POKE_END_LLDP_TLV ) ) goto toobig ; } if ( port -> p_descr && * port -> p_descr != '\\\\0' ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_PORT_DESCR ) && POKE_BYTES ( port -> p_descr , strlen ( port -> p_descr ) ) && POKE_END_LLDP_TLV ) ) goto toobig ; } # ifdef ENABLE_DOT1 if ( port -> p_pvid != 0 ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( dot1 , sizeof ( dot1 ) ) && POKE_UINT8 ( LLDP_TLV_DOT1_PVID ) && POKE_UINT16 ( port -> p_pvid ) && POKE_END_LLDP_TLV ) ) { goto toobig ; } } TAILQ_FOREACH ( ppvid , & port -> p_ppvids , p_entries ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( dot1 , sizeof ( dot1 ) ) && POKE_UINT8 ( LLDP_TLV_DOT1_PPVID ) && POKE_UINT8 ( ppvid -> p_cap_status ) && POKE_UINT16 ( ppvid -> p_ppvid ) && POKE_END_LLDP_TLV ) ) { goto toobig ; } } TAILQ_FOREACH ( vlan , & port -> p_vlans , v_entries ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( dot1 , sizeof ( dot1 ) ) && POKE_UINT8 ( LLDP_TLV_DOT1_VLANNAME ) && POKE_UINT16 ( vlan -> v_vid ) && POKE_UINT8 ( strlen ( vlan -> v_name ) ) && POKE_BYTES ( vlan -> v_name , strlen ( vlan -> v_name ) ) && POKE_END_LLDP_TLV ) ) goto toobig ; } TAILQ_FOREACH ( pi , & port -> p_pids , p_entries ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( dot1 , sizeof ( dot1 ) ) && POKE_UINT8 ( LLDP_TLV_DOT1_PI ) && POKE_UINT8 ( pi -> p_pi_len ) && POKE_BYTES ( pi -> p_pi , pi -> p_pi_len ) && POKE_END_LLDP_TLV ) ) goto toobig ; } # endif # ifdef ENABLE_DOT3 if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( dot3 , sizeof ( dot3 ) ) && POKE_UINT8 ( LLDP_TLV_DOT3_LA ) && POKE_UINT8 ( ( port -> p_aggregid ) ? 3 : 1 ) && POKE_UINT32 ( port -> p_aggregid ) && POKE_END_LLDP_TLV ) ) goto toobig ; if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( dot3 , sizeof ( dot3 ) ) && POKE_UINT8 ( LLDP_TLV_DOT3_MAC ) && POKE_UINT8 ( port -> p_macphy . autoneg_support | ( port -> p_macphy . autoneg_enabled << 1 ) ) && POKE_UINT16 ( port -> p_macphy . autoneg_advertised ) && POKE_UINT16 ( port -> p_macphy . mau_type ) && POKE_END_LLDP_TLV ) ) goto toobig ; if ( port -> p_mfs ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( dot3 , sizeof ( dot3 ) ) && POKE_UINT8 ( LLDP_TLV_DOT3_MFS ) && POKE_UINT16 ( port -> p_mfs ) && POKE_END_LLDP_TLV ) ) goto toobig ; } if ( port -> p_power . devicetype ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( dot3 , sizeof ( dot3 ) ) && POKE_UINT8 ( LLDP_TLV_DOT3_POWER ) && POKE_UINT8 ( ( ( ( ( 2 - port -> p_power . devicetype ) % ( 1 << 1 ) ) << 0 ) | ( ( port -> p_power . supported % ( 1 << 1 ) ) << 1 ) | ( ( port -> p_power . enabled % ( 1 << 1 ) ) << 2 ) | ( ( port -> p_power . paircontrol % ( 1 << 1 ) ) << 3 ) ) ) && POKE_UINT8 ( port -> p_power . pairs ) && POKE_UINT8 ( port -> p_power . class ) ) ) goto toobig ; if ( port -> p_power . powertype != LLDP_DOT3_POWER_8023AT_OFF ) { if ( ! ( POKE_UINT8 ( ( ( ( ( port -> p_power . powertype == LLDP_DOT3_POWER_8023AT_TYPE1 ) ? 1 : 0 ) << 7 ) | ( ( ( port -> p_power . devicetype == LLDP_DOT3_POWER_PSE ) ? 0 : 1 ) << 6 ) | ( ( port -> p_power . source % ( 1 << 2 ) ) << 4 ) | ( ( port -> p_power . priority % ( 1 << 2 ) ) << 0 ) ) ) && POKE_UINT16 ( port -> p_power . requested ) && POKE_UINT16 ( port -> p_power . allocated ) ) ) goto toobig ; } if ( ! ( POKE_END_LLDP_TLV ) ) goto toobig ; } # endif # ifdef ENABLE_LLDPMED if ( port -> p_med_cap_enabled ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( med , sizeof ( med ) ) && POKE_UINT8 ( LLDP_TLV_MED_CAP ) && POKE_UINT16 ( chassis -> c_med_cap_available ) && POKE_UINT8 ( chassis -> c_med_type ) && POKE_END_LLDP_TLV ) ) goto toobig ; # define LLDP_INVENTORY ( value , subtype ) if ( value ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( med , sizeof ( med ) ) && POKE_UINT8 ( subtype ) && POKE_BYTES ( value , ( strlen ( value ) > 32 ) ? 32 : strlen ( value ) ) && POKE_END_LLDP_TLV ) ) goto toobig ; } if ( port -> p_med_cap_enabled & LLDP_MED_CAP_IV ) { LLDP_INVENTORY ( chassis -> c_med_hw , LLDP_TLV_MED_IV_HW ) ; LLDP_INVENTORY ( chassis -> c_med_fw , LLDP_TLV_MED_IV_FW ) ; LLDP_INVENTORY ( chassis -> c_med_sw , LLDP_TLV_MED_IV_SW ) ; LLDP_INVENTORY ( chassis -> c_med_sn , LLDP_TLV_MED_IV_SN ) ; LLDP_INVENTORY ( chassis -> c_med_manuf , LLDP_TLV_MED_IV_MANUF ) ; LLDP_INVENTORY ( chassis -> c_med_model , LLDP_TLV_MED_IV_MODEL ) ; LLDP_INVENTORY ( chassis -> c_med_asset , LLDP_TLV_MED_IV_ASSET ) ; } for ( i = 0 ; i < LLDP_MED_LOCFORMAT_LAST ; i ++ ) { if ( port -> p_med_location [ i ] . format == i + 1 ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( med , sizeof ( med ) ) && POKE_UINT8 ( LLDP_TLV_MED_LOCATION ) && POKE_UINT8 ( port -> p_med_location [ i ] . format ) && POKE_BYTES ( port -> p_med_location [ i ] . data , port -> p_med_location [ i ] . data_len ) && POKE_END_LLDP_TLV ) ) goto toobig ; } } for ( i = 0 ; i < LLDP_MED_APPTYPE_LAST ; i ++ ) { if ( port -> p_med_policy [ i ] . type == i + 1 ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( med , sizeof ( med ) ) && POKE_UINT8 ( LLDP_TLV_MED_POLICY ) && POKE_UINT32 ( ( ( ( port -> p_med_policy [ i ] . type % ( 1 << 8 ) ) << 24 ) | ( ( port -> p_med_policy [ i ] . unknown % ( 1 << 1 ) ) << 23 ) | ( ( port -> p_med_policy [ i ] . tagged % ( 1 << 1 ) ) << 22 ) | ( ( port -> p_med_policy [ i ] . vid % ( 1 << 12 ) ) << 9 ) | ( ( port -> p_med_policy [ i ] . priority % ( 1 << 3 ) ) << 6 ) | ( ( port -> p_med_policy [ i ] . dscp % ( 1 << 6 ) ) << 0 ) ) ) && POKE_END_LLDP_TLV ) ) goto toobig ; } } if ( ( port -> p_med_power . devicetype == LLDP_MED_POW_TYPE_PSE ) || ( port -> p_med_power . devicetype == LLDP_MED_POW_TYPE_PD ) ) { int devicetype = 0 , source = 0 ; if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( med , sizeof ( med ) ) && POKE_UINT8 ( LLDP_TLV_MED_MDI ) ) ) goto toobig ; switch ( port -> p_med_power . devicetype ) { case LLDP_MED_POW_TYPE_PSE : devicetype = 0 ; switch ( port -> p_med_power . source ) { case LLDP_MED_POW_SOURCE_PRIMARY : source = 1 ; break ; case LLDP_MED_POW_SOURCE_BACKUP : source = 2 ; break ; case LLDP_MED_POW_SOURCE_RESERVED : source = 3 ; break ; default : source = 0 ; break ; } break ; case LLDP_MED_POW_TYPE_PD : devicetype = 1 ; switch ( port -> p_med_power . source ) { case LLDP_MED_POW_SOURCE_PSE : source = 1 ; break ; case LLDP_MED_POW_SOURCE_LOCAL : source = 2 ; break ; case LLDP_MED_POW_SOURCE_BOTH : source = 3 ; break ; default : source = 0 ; break ; } break ; } if ( ! ( POKE_UINT8 ( ( ( ( devicetype % ( 1 << 2 ) ) << 6 ) | ( ( source % ( 1 << 2 ) ) << 4 ) | ( ( port -> p_med_power . priority % ( 1 << 4 ) ) << 0 ) ) ) && POKE_UINT16 ( port -> p_med_power . val ) && POKE_END_LLDP_TLV ) ) goto toobig ; } } # endif # ifdef ENABLE_CUSTOM TAILQ_FOREACH ( custom , & port -> p_custom_list , next ) { if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_ORG ) && POKE_BYTES ( custom -> oui , sizeof ( custom -> oui ) ) && POKE_UINT8 ( custom -> subtype ) && POKE_BYTES ( custom -> oui_info , custom -> oui_info_len ) && POKE_END_LLDP_TLV ) ) goto toobig ; } # endif end : if ( ! ( POKE_START_LLDP_TLV ( LLDP_TLV_END ) && POKE_END_LLDP_TLV ) ) goto toobig ; if ( interfaces_send_helper ( global , hardware , ( char * ) packet , pos - packet ) == - 1 ) { log_warn ( \"lldp\" , \"unable<S2SV_blank>to<S2SV_blank>send<S2SV_blank>packet<S2SV_blank>on<S2SV_blank>real<S2SV_blank>device<S2SV_blank>for<S2SV_blank>%s\" , hardware -> h_ifname ) ; free ( packet ) ; return ENETDOWN ; } hardware -> h_tx_cnt ++ ; if ( ! shutdown && ( frame = ( struct lldpd_frame * ) malloc ( sizeof ( int ) + pos - packet ) ) != NULL ) { frame -> size = pos - packet ; memcpy ( & frame -> frame , packet , frame -> size ) ; if ( ( hardware -> h_lport . p_lastframe == NULL ) || ( hardware -> h_lport . p_lastframe -> size != frame -> size ) || ( memcmp ( hardware -> h_lport . p_lastframe -> frame , frame -> frame , frame -> size ) != 0 ) ) { free ( hardware -> h_lport . p_lastframe ) ; hardware -> h_lport . p_lastframe = frame ; hardware -> h_lport . p_lastchange = time ( NULL ) ; } else free ( frame ) ; } free ( packet ) ; return 0 ; toobig : free ( packet ) ; return E2BIG ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> m_family ) ; if ( proto == LLDP_MGMT_ADDR_NONE ) continue <S2SV_ModEnd> ; if (\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-15594\n\n```\nCWE-200 unsigned paravirt_patch_call ( void * insnbuf , const void * target , u16 tgt_clobbers , unsigned long addr , u16 site_clobbers , unsigned len ) { struct branch * b = insnbuf ; unsigned long delta = ( unsigned long ) target - ( addr + 5 ) ; <S2SV_StartBug> if ( tgt_clobbers & ~ site_clobbers ) <S2SV_EndBug> return len ; <S2SV_StartBug> if ( len < 5 ) <S2SV_EndBug> return len ; b -> opcode = 0xe8 ; b -> delta = delta ; BUILD_BUG_ON ( sizeof ( * b ) != 5 ) ; return 5 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; if ( len < 5 ) { # ifdef CONFIG_RETPOLINE WARN_ONCE ( \"Failing<S2SV_blank>to<S2SV_blank>patch<S2SV_blank>indirect<S2SV_blank>CALL<S2SV_blank>in<S2SV_blank>%ps\\\\n\" , ( void * ) addr ) ; # endif <S2SV_ModEnd> return len ; <S2SV_ModStart> return len ; } <S2SV_ModEnd> b -> opcode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-400(未受控的资源消耗(资源穷尽))漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-0879\n\n```\nCWE-400 static struct task_struct * copy_process ( unsigned long clone_flags , unsigned long stack_start , struct pt_regs * regs , unsigned long stack_size , int __user * child_tidptr , struct pid * pid , int trace ) { int retval ; struct task_struct * p ; int cgroup_callbacks_done = 0 ; if ( ( clone_flags & ( CLONE_NEWNS | CLONE_FS ) ) == ( CLONE_NEWNS | CLONE_FS ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_THREAD ) && ! ( clone_flags & CLONE_SIGHAND ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_SIGHAND ) && ! ( clone_flags & CLONE_VM ) ) return ERR_PTR ( - EINVAL ) ; if ( ( clone_flags & CLONE_PARENT ) && current -> signal -> flags & SIGNAL_UNKILLABLE ) return ERR_PTR ( - EINVAL ) ; retval = security_task_create ( clone_flags ) ; if ( retval ) goto fork_out ; retval = - ENOMEM ; p = dup_task_struct ( current ) ; if ( ! p ) goto fork_out ; ftrace_graph_init_task ( p ) ; rt_mutex_init_task ( p ) ; # ifdef CONFIG_PROVE_LOCKING DEBUG_LOCKS_WARN_ON ( ! p -> hardirqs_enabled ) ; DEBUG_LOCKS_WARN_ON ( ! p -> softirqs_enabled ) ; # endif retval = - EAGAIN ; if ( atomic_read ( & p -> real_cred -> user -> processes ) >= p -> signal -> rlim [ RLIMIT_NPROC ] . rlim_cur ) { if ( ! capable ( CAP_SYS_ADMIN ) && ! capable ( CAP_SYS_RESOURCE ) && p -> real_cred -> user != INIT_USER ) goto bad_fork_free ; } retval = copy_creds ( p , clone_flags ) ; if ( retval < 0 ) goto bad_fork_free ; retval = - EAGAIN ; if ( nr_threads >= max_threads ) goto bad_fork_cleanup_count ; if ( ! try_module_get ( task_thread_info ( p ) -> exec_domain -> module ) ) goto bad_fork_cleanup_count ; p -> did_exec = 0 ; delayacct_tsk_init ( p ) ; copy_flags ( clone_flags , p ) ; INIT_LIST_HEAD ( & p -> children ) ; INIT_LIST_HEAD ( & p -> sibling ) ; rcu_copy_process ( p ) ; p -> vfork_done = NULL ; spin_lock_init ( & p -> alloc_lock ) ; init_sigpending ( & p -> pending ) ; p -> utime = cputime_zero ; p -> stime = cputime_zero ; p -> gtime = cputime_zero ; p -> utimescaled = cputime_zero ; p -> stimescaled = cputime_zero ; p -> prev_utime = cputime_zero ; p -> prev_stime = cputime_zero ; p -> default_timer_slack_ns = current -> timer_slack_ns ; task_io_accounting_init ( & p -> ioac ) ; acct_clear_integrals ( p ) ; posix_cpu_timers_init ( p ) ; p -> lock_depth = - 1 ; do_posix_clock_monotonic_gettime ( & p -> start_time ) ; p -> real_start_time = p -> start_time ; monotonic_to_bootbased ( & p -> real_start_time ) ; p -> io_context = NULL ; p -> audit_context = NULL ; cgroup_fork ( p ) ; # ifdef CONFIG_NUMA p -> mempolicy = mpol_dup ( p -> mempolicy ) ; if ( IS_ERR ( p -> mempolicy ) ) { retval = PTR_ERR ( p -> mempolicy ) ; p -> mempolicy = NULL ; goto bad_fork_cleanup_cgroup ; } mpol_fix_fork_child_flag ( p ) ; # endif # ifdef CONFIG_TRACE_IRQFLAGS p -> irq_events = 0 ; # ifdef __ARCH_WANT_INTERRUPTS_ON_CTXSW p -> hardirqs_enabled = 1 ; # else p -> hardirqs_enabled = 0 ; # endif p -> hardirq_enable_ip = 0 ; p -> hardirq_enable_event = 0 ; p -> hardirq_disable_ip = _THIS_IP_ ; p -> hardirq_disable_event = 0 ; p -> softirqs_enabled = 1 ; p -> softirq_enable_ip = _THIS_IP_ ; p -> softirq_enable_event = 0 ; p -> softirq_disable_ip = 0 ; p -> softirq_disable_event = 0 ; p -> hardirq_context = 0 ; p -> softirq_context = 0 ; # endif # ifdef CONFIG_LOCKDEP p -> lockdep_depth = 0 ; p -> curr_chain_key = 0 ; p -> lockdep_recursion = 0 ; # endif # ifdef CONFIG_DEBUG_MUTEXES p -> blocked_on = NULL ; # endif p -> bts = NULL ; p -> stack_start = stack_start ; sched_fork ( p , clone_flags ) ; retval = perf_event_init_task ( p ) ; if ( retval ) goto bad_fork_cleanup_policy ; if ( ( retval = audit_alloc ( p ) ) ) goto bad_fork_cleanup_policy ; if ( ( retval = copy_semundo ( clone_flags , p ) ) ) goto bad_fork_cleanup_audit ; if ( ( retval = copy_files ( clone_flags , p ) ) ) goto bad_fork_cleanup_semundo ; if ( ( retval = copy_fs ( clone_flags , p ) ) ) goto bad_fork_cleanup_files ; if ( ( retval = copy_sighand ( clone_flags , p ) ) ) goto bad_fork_cleanup_fs ; if ( ( retval = copy_signal ( clone_flags , p ) ) ) goto bad_fork_cleanup_sighand ; if ( ( retval = copy_mm ( clone_flags , p ) ) ) goto bad_fork_cleanup_signal ; if ( ( retval = copy_namespaces ( clone_flags , p ) ) ) goto bad_fork_cleanup_mm ; if ( ( retval = copy_io ( clone_flags , p ) ) ) goto bad_fork_cleanup_namespaces ; retval = copy_thread ( clone_flags , stack_start , stack_size , p , regs ) ; if ( retval ) goto bad_fork_cleanup_io ; if ( pid != & init_struct_pid ) { retval = - ENOMEM ; pid = alloc_pid ( p -> nsproxy -> pid_ns ) ; if ( ! pid ) goto bad_fork_cleanup_io ; if ( clone_flags & CLONE_NEWPID ) { retval = pid_ns_prepare_proc ( p -> nsproxy -> pid_ns ) ; if ( retval < 0 ) goto bad_fork_free_pid ; } } p -> pid = pid_nr ( pid ) ; p -> tgid = p -> pid ; if ( clone_flags & CLONE_THREAD ) p -> tgid = current -> tgid ; if ( current -> nsproxy != p -> nsproxy ) { retval = ns_cgroup_clone ( p , pid ) ; if ( retval ) goto bad_fork_free_pid ; } p -> set_child_tid = ( clone_flags & CLONE_CHILD_SETTID ) ? child_tidptr : NULL ; p -> clear_child_tid = ( clone_flags & CLONE_CHILD_CLEARTID ) ? child_tidptr : NULL ; # ifdef CONFIG_FUTEX p -> robust_list = NULL ; # ifdef CONFIG_COMPAT p -> compat_robust_list = NULL ; # endif INIT_LIST_HEAD ( & p -> pi_state_list ) ; p -> pi_state_cache = NULL ; # endif if ( ( clone_flags & ( CLONE_VM | CLONE_VFORK ) ) == CLONE_VM ) p -> sas_ss_sp = p -> sas_ss_size = 0 ; clear_tsk_thread_flag ( p , TIF_SYSCALL_TRACE ) ; # ifdef TIF_SYSCALL_EMU clear_tsk_thread_flag ( p , TIF_SYSCALL_EMU ) ; # endif clear_all_latency_tracing ( p ) ; p -> exit_signal = ( clone_flags & CLONE_THREAD ) ? - 1 : ( clone_flags & CSIGNAL ) ; p -> pdeath_signal = 0 ; p -> exit_state = 0 ; p -> group_leader = p ; INIT_LIST_HEAD ( & p -> thread_group ) ; cgroup_fork_callbacks ( p ) ; cgroup_callbacks_done = 1 ; write_lock_irq ( & tasklist_lock ) ; p -> cpus_allowed = current -> cpus_allowed ; p -> rt . nr_cpus_allowed = current -> rt . nr_cpus_allowed ; if ( unlikely ( ! cpu_isset ( task_cpu ( p ) , p -> cpus_allowed ) || ! cpu_online ( task_cpu ( p ) ) ) ) set_task_cpu ( p , smp_processor_id ( ) ) ; if ( clone_flags & ( CLONE_PARENT | CLONE_THREAD ) ) { p -> real_parent = current -> real_parent ; p -> parent_exec_id = current -> parent_exec_id ; } else { p -> real_parent = current ; p -> parent_exec_id = current -> self_exec_id ; } spin_lock ( & current -> sighand -> siglock ) ; recalc_sigpending ( ) ; if ( signal_pending ( current ) ) { spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; retval = - ERESTARTNOINTR ; goto bad_fork_free_pid ; } if ( clone_flags & CLONE_THREAD ) { atomic_inc ( & current -> signal -> count ) ; atomic_inc ( & current -> signal -> live ) ; p -> group_leader = current -> group_leader ; list_add_tail_rcu ( & p -> thread_group , & p -> group_leader -> thread_group ) ; } if ( likely ( p -> pid ) ) { list_add_tail ( & p -> sibling , & p -> real_parent -> children ) ; tracehook_finish_clone ( p , clone_flags , trace ) ; if ( thread_group_leader ( p ) ) { if ( clone_flags & CLONE_NEWPID ) p -> nsproxy -> pid_ns -> child_reaper = p ; p -> signal -> leader_pid = pid ; tty_kref_put ( p -> signal -> tty ) ; p -> signal -> tty = tty_kref_get ( current -> signal -> tty ) ; attach_pid ( p , PIDTYPE_PGID , task_pgrp ( current ) ) ; attach_pid ( p , PIDTYPE_SID , task_session ( current ) ) ; list_add_tail_rcu ( & p -> tasks , & init_task . tasks ) ; __get_cpu_var ( process_counts ) ++ ; } attach_pid ( p , PIDTYPE_PID , pid ) ; nr_threads ++ ; } total_forks ++ ; spin_unlock ( & current -> sighand -> siglock ) ; write_unlock_irq ( & tasklist_lock ) ; proc_fork_connector ( p ) ; cgroup_post_fork ( p ) ; perf_event_fork ( p ) ; return p ; bad_fork_free_pid : if ( pid != & init_struct_pid ) free_pid ( pid ) ; bad_fork_cleanup_io : <S2SV_StartBug> put_io_context ( p -> io_context ) ; <S2SV_EndBug> bad_fork_cleanup_namespaces : exit_task_namespaces ( p ) ; bad_fork_cleanup_mm : if ( p -> mm ) mmput ( p -> mm ) ; bad_fork_cleanup_signal : if ( ! ( clone_flags & CLONE_THREAD ) ) __cleanup_signal ( p -> signal ) ; bad_fork_cleanup_sighand : __cleanup_sighand ( p -> sighand ) ; bad_fork_cleanup_fs : exit_fs ( p ) ; bad_fork_cleanup_files : exit_files ( p ) ; bad_fork_cleanup_semundo : exit_sem ( p ) ; bad_fork_cleanup_audit : audit_free ( p ) ; bad_fork_cleanup_policy : perf_event_free_task ( p ) ; # ifdef CONFIG_NUMA mpol_put ( p -> mempolicy ) ; bad_fork_cleanup_cgroup : # endif cgroup_exit ( p , cgroup_callbacks_done ) ; delayacct_tsk_free ( p ) ; module_put ( task_thread_info ( p ) -> exec_domain -> module ) ; bad_fork_cleanup_count : atomic_dec ( & p -> cred -> user -> processes ) ; exit_creds ( p ) ; bad_fork_free : free_task ( p ) ; fork_out : return ERR_PTR ( retval ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ; bad_fork_cleanup_io : if <S2SV_ModEnd> ( p -> <S2SV_ModStart> p -> io_context ) exit_io_context ( p\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9992\n\n```\nCWE-119 static int decode_dds1 ( GetByteContext * gb , uint8_t * frame , int width , int height ) { const uint8_t * frame_start = frame ; const uint8_t * frame_end = frame + width * height ; int mask = 0x10000 , bitbuf = 0 ; int i , v , offset , count , segments ; segments = bytestream2_get_le16 ( gb ) ; while ( segments -- ) { if ( bytestream2_get_bytes_left ( gb ) < 2 ) return AVERROR_INVALIDDATA ; if ( mask == 0x10000 ) { bitbuf = bytestream2_get_le16u ( gb ) ; mask = 1 ; } if ( bitbuf & mask ) { v = bytestream2_get_le16 ( gb ) ; offset = ( v & 0x1FFF ) << 2 ; count = ( ( v >> 13 ) + 2 ) << 1 ; if ( frame - frame_start < offset || frame_end - frame < count * 2 + width ) return AVERROR_INVALIDDATA ; for ( i = 0 ; i < count ; i ++ ) { frame [ 0 ] = frame [ 1 ] = frame [ width ] = frame [ width + 1 ] = frame [ - offset ] ; frame += 2 ; } } else if ( bitbuf & ( mask << 1 ) ) { v = bytestream2_get_le16 ( gb ) * 2 ; if ( frame - frame_end < v ) return AVERROR_INVALIDDATA ; frame += v ; } else { <S2SV_StartBug> if ( frame_end - frame < width + 3 ) <S2SV_EndBug> return AVERROR_INVALIDDATA ; frame [ 0 ] = frame [ 1 ] = frame [ width ] = frame [ width + 1 ] = bytestream2_get_byte ( gb ) ; frame += 2 ; frame [ 0 ] = frame [ 1 ] = frame [ width ] = frame [ width + 1 ] = bytestream2_get_byte ( gb ) ; frame += 2 ; } mask <<= 2 ; } return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> < width + 4 <S2SV_ModEnd> ) return AVERROR_INVALIDDATA\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-264(权限、特权和访问控制)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2013-2182\n\n```\nCWE-264 int _mkp_stage_30 ( struct plugin * p , struct client_session * cs , struct session_request * sr ) { mk_ptr_t referer ; ( void ) p ; ( void ) cs ; PLUGIN_TRACE ( \"[FD<S2SV_blank>%i]<S2SV_blank>Mandril<S2SV_blank>validating<S2SV_blank>URL\" , cs -> socket ) ; <S2SV_StartBug> if ( mk_security_check_url ( sr -> uri ) < 0 ) { <S2SV_EndBug> PLUGIN_TRACE ( \"[FD<S2SV_blank>%i]<S2SV_blank>Close<S2SV_blank>connection,<S2SV_blank>blocked<S2SV_blank>URL\" , cs -> socket ) ; mk_api -> header_set_http_status ( sr , MK_CLIENT_FORBIDDEN ) ; return MK_PLUGIN_RET_CLOSE_CONX ; } PLUGIN_TRACE ( \"[FD<S2SV_blank>%d]<S2SV_blank>Mandril<S2SV_blank>validating<S2SV_blank>hotlinking\" , cs -> socket ) ; referer = mk_api -> header_get ( & sr -> headers_toc , \"Referer\" , strlen ( \"Referer\" ) ) ; if ( mk_security_check_hotlink ( sr -> uri_processed , sr -> host , referer ) < 0 ) { PLUGIN_TRACE ( \"[FD<S2SV_blank>%i]<S2SV_blank>Close<S2SV_blank>connection,<S2SV_blank>deny<S2SV_blank>hotlinking.\" , cs -> socket ) ; mk_api -> header_set_http_status ( sr , MK_CLIENT_FORBIDDEN ) ; return MK_PLUGIN_RET_CLOSE_CONX ; } return MK_PLUGIN_RET_NOT_ME ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( sr -> uri_processed <S2SV_ModEnd> ) < 0\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-369(未知类型)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2014-8130\n\n```\nCWE-369 void * _TIFFmalloc ( tmsize_t s ) <S2SV_StartBug> { <S2SV_EndBug> return ( malloc ( ( size_t ) s ) ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> s ) { if ( s == 0 ) return ( ( void * ) NULL ) ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2018-1999015\n\n```\nCWE-125 <S2SV_StartBug> static void read_quant_matrix_ext ( MpegEncContext * s , GetBitContext * gb ) <S2SV_EndBug> { int i , j , v ; <S2SV_StartBug> if ( get_bits1 ( gb ) ) { <S2SV_EndBug> for ( i = 0 ; i < 64 ; i ++ ) { v = get_bits ( gb , 8 ) ; j = s -> idsp . idct_permutation [ ff_zigzag_direct [ i ] ] ; s -> intra_matrix [ j ] = v ; s -> chroma_intra_matrix [ j ] = v ; } } if ( get_bits1 ( gb ) ) { <S2SV_StartBug> for ( i = 0 ; i < 64 ; i ++ ) { <S2SV_EndBug> get_bits ( gb , 8 ) ; } } <S2SV_StartBug> if ( get_bits1 ( gb ) ) { <S2SV_EndBug> for ( i = 0 ; i < 64 ; i ++ ) { v = get_bits ( gb , 8 ) ; j = s -> idsp . idct_permutation [ ff_zigzag_direct [ i ] ] ; s -> chroma_intra_matrix [ j ] = v ; } } if ( get_bits1 ( gb ) ) { <S2SV_StartBug> for ( i = 0 ; i < 64 ; i ++ ) { <S2SV_EndBug> get_bits ( gb , 8 ) ; } } next_start_code_studio ( gb ) ; <S2SV_StartBug> } <S2SV_EndBug>\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> <S2SV_null> <S2SV_null> static int <S2SV_ModEnd> read_quant_matrix_ext ( MpegEncContext <S2SV_ModStart> ) ) { if ( get_bits_left ( gb ) < 64 * 8 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ) ) { if ( get_bits_left ( gb ) < 64 * 8 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ) ) { if ( get_bits_left ( gb ) < 64 * 8 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> ) ) { if ( get_bits_left ( gb ) < 64 * 8 ) return AVERROR_INVALIDDATA ; <S2SV_ModStart> gb ) ; return 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-200(信息泄露)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2012-6543\n\n```\nCWE-200 static int l2tp_ip6_getname ( struct socket * sock , struct sockaddr * uaddr , int * uaddr_len , int peer ) { struct sockaddr_l2tpip6 * lsa = ( struct sockaddr_l2tpip6 * ) uaddr ; struct sock * sk = sock -> sk ; struct ipv6_pinfo * np = inet6_sk ( sk ) ; struct l2tp_ip6_sock * lsk = l2tp_ip6_sk ( sk ) ; lsa -> l2tp_family = AF_INET6 ; lsa -> l2tp_flowinfo = 0 ; lsa -> l2tp_scope_id = 0 ; <S2SV_StartBug> if ( peer ) { <S2SV_EndBug> if ( ! lsk -> peer_conn_id ) return - ENOTCONN ; lsa -> l2tp_conn_id = lsk -> peer_conn_id ; lsa -> l2tp_addr = np -> daddr ; if ( np -> sndflow ) lsa -> l2tp_flowinfo = np -> flow_label ; } else { if ( ipv6_addr_any ( & np -> rcv_saddr ) ) lsa -> l2tp_addr = np -> saddr ; else lsa -> l2tp_addr = np -> rcv_saddr ; lsa -> l2tp_conn_id = lsk -> conn_id ; } if ( ipv6_addr_type ( & lsa -> l2tp_addr ) & IPV6_ADDR_LINKLOCAL ) lsa -> l2tp_scope_id = sk -> sk_bound_dev_if ; * uaddr_len = sizeof ( * lsa ) ; return 0 ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = 0 ; lsa -> l2tp_unused = 0 ;\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-7414\n\n```\nCWE-119 int phar_parse_zipfile ( php_stream * fp , char * fname , int fname_len , char * alias , int alias_len , phar_archive_data * * pphar , char * * error ) { phar_zip_dir_end locator ; char buf [ sizeof ( locator ) + 65536 ] ; zend_long size ; php_uint16 i ; phar_archive_data * mydata = NULL ; phar_entry_info entry = { 0 } ; char * p = buf , * ext , * actual_alias = NULL ; char * metadata = NULL ; size = php_stream_tell ( fp ) ; if ( size > sizeof ( locator ) + 65536 ) { size = sizeof ( locator ) + 65536 ; if ( FAILURE == php_stream_seek ( fp , - size , SEEK_END ) ) { php_stream_close ( fp ) ; if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>search<S2SV_blank>for<S2SV_blank>end<S2SV_blank>of<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } return FAILURE ; } } else { php_stream_seek ( fp , 0 , SEEK_SET ) ; } if ( ! php_stream_read ( fp , buf , size ) ) { php_stream_close ( fp ) ; if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>data<S2SV_blank>to<S2SV_blank>search<S2SV_blank>for<S2SV_blank>end<S2SV_blank>of<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } return FAILURE ; } while ( ( p = ( char * ) memchr ( p + 1 , 'P' , ( size_t ) ( size - ( p + 1 - buf ) ) ) ) != NULL ) { if ( ( p - buf ) + sizeof ( locator ) <= size && ! memcmp ( p + 1 , \"K\\\\5\\\\6\" , 3 ) ) { memcpy ( ( void * ) & locator , ( void * ) p , sizeof ( locator ) ) ; if ( PHAR_GET_16 ( locator . centraldisk ) != 0 || PHAR_GET_16 ( locator . disknumber ) != 0 ) { php_stream_close ( fp ) ; if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>split<S2SV_blank>archives<S2SV_blank>spanning<S2SV_blank>multiple<S2SV_blank>zips<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>processed<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } return FAILURE ; } if ( PHAR_GET_16 ( locator . counthere ) != PHAR_GET_16 ( locator . count ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>corrupt<S2SV_blank>zip<S2SV_blank>archive,<S2SV_blank>conflicting<S2SV_blank>file<S2SV_blank>count<S2SV_blank>in<S2SV_blank>end<S2SV_blank>of<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>record<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } php_stream_close ( fp ) ; return FAILURE ; } mydata = pecalloc ( 1 , sizeof ( phar_archive_data ) , PHAR_G ( persist ) ) ; mydata -> is_persistent = PHAR_G ( persist ) ; if ( PHAR_GET_16 ( locator . comment_len ) ) { metadata = p + sizeof ( locator ) ; if ( PHAR_GET_16 ( locator . comment_len ) != size - ( metadata - buf ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>corrupt<S2SV_blank>zip<S2SV_blank>archive,<S2SV_blank>zip<S2SV_blank>file<S2SV_blank>comment<S2SV_blank>truncated<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } php_stream_close ( fp ) ; pefree ( mydata , mydata -> is_persistent ) ; return FAILURE ; } mydata -> metadata_len = PHAR_GET_16 ( locator . comment_len ) ; if ( phar_parse_metadata ( & metadata , & mydata -> metadata , PHAR_GET_16 ( locator . comment_len ) ) == FAILURE ) { mydata -> metadata_len = 0 ; ZVAL_NEW_STR ( & mydata -> metadata , zend_string_init ( metadata , PHAR_GET_16 ( locator . comment_len ) , mydata -> is_persistent ) ) ; } } else { ZVAL_UNDEF ( & mydata -> metadata ) ; } goto foundit ; } } php_stream_close ( fp ) ; if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>end<S2SV_blank>of<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>not<S2SV_blank>found<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , fname ) ; } return FAILURE ; foundit : mydata -> fname = pestrndup ( fname , fname_len , mydata -> is_persistent ) ; # ifdef PHP_WIN32 phar_unixify_path_separators ( mydata -> fname , fname_len ) ; # endif mydata -> is_zip = 1 ; mydata -> fname_len = fname_len ; ext = strrchr ( mydata -> fname , '/' ) ; if ( ext ) { mydata -> ext = memchr ( ext , '.' , ( mydata -> fname + fname_len ) - ext ) ; if ( mydata -> ext == ext ) { mydata -> ext = memchr ( ext + 1 , '.' , ( mydata -> fname + fname_len ) - ext - 1 ) ; } if ( mydata -> ext ) { mydata -> ext_len = ( mydata -> fname + fname_len ) - mydata -> ext ; } } php_stream_seek ( fp , PHAR_GET_32 ( locator . cdir_offset ) , SEEK_SET ) ; zend_hash_init ( & mydata -> manifest , PHAR_GET_16 ( locator . count ) , zend_get_hash_value , destroy_phar_manifest_entry , ( zend_bool ) mydata -> is_persistent ) ; zend_hash_init ( & mydata -> mounted_dirs , 5 , zend_get_hash_value , NULL , ( zend_bool ) mydata -> is_persistent ) ; zend_hash_init ( & mydata -> virtual_dirs , PHAR_GET_16 ( locator . count ) * 2 , zend_get_hash_value , NULL , ( zend_bool ) mydata -> is_persistent ) ; entry . phar = mydata ; entry . is_zip = 1 ; entry . fp_type = PHAR_FP ; entry . is_persistent = mydata -> is_persistent ; # define PHAR_ZIP_FAIL_FREE ( errmsg , save ) zend_hash_destroy ( & mydata -> manifest ) ; mydata -> manifest . u . flags = 0 ; zend_hash_destroy ( & mydata -> mounted_dirs ) ; mydata -> mounted_dirs . u . flags = 0 ; zend_hash_destroy ( & mydata -> virtual_dirs ) ; mydata -> virtual_dirs . u . flags = 0 ; php_stream_close ( fp ) ; zval_dtor ( & mydata -> metadata ) ; if ( mydata -> signature ) { efree ( mydata -> signature ) ; } if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , errmsg , mydata -> fname ) ; } pefree ( mydata -> fname , mydata -> is_persistent ) ; if ( mydata -> alias ) { pefree ( mydata -> alias , mydata -> is_persistent ) ; } pefree ( mydata , mydata -> is_persistent ) ; efree ( save ) ; return FAILURE ; # define PHAR_ZIP_FAIL ( errmsg ) zend_hash_destroy ( & mydata -> manifest ) ; mydata -> manifest . u . flags = 0 ; zend_hash_destroy ( & mydata -> mounted_dirs ) ; mydata -> mounted_dirs . u . flags = 0 ; zend_hash_destroy ( & mydata -> virtual_dirs ) ; mydata -> virtual_dirs . u . flags = 0 ; php_stream_close ( fp ) ; zval_dtor ( & mydata -> metadata ) ; if ( mydata -> signature ) { efree ( mydata -> signature ) ; } if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>%s<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , errmsg , mydata -> fname ) ; } pefree ( mydata -> fname , mydata -> is_persistent ) ; if ( mydata -> alias ) { pefree ( mydata -> alias , mydata -> is_persistent ) ; } pefree ( mydata , mydata -> is_persistent ) ; return FAILURE ; for ( i = 0 ; i < PHAR_GET_16 ( locator . count ) ; ++ i ) { phar_zip_central_dir_file zipentry ; zend_off_t beforeus = php_stream_tell ( fp ) ; if ( sizeof ( zipentry ) != php_stream_read ( fp , ( char * ) & zipentry , sizeof ( zipentry ) ) ) { PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>entry,<S2SV_blank>truncated\" ) ; } if ( memcmp ( \"PK\\\\1\\\\2\" , zipentry . signature , 4 ) ) { PHAR_ZIP_FAIL ( \"corrupted<S2SV_blank>central<S2SV_blank>directory<S2SV_blank>entry,<S2SV_blank>no<S2SV_blank>magic<S2SV_blank>signature\" ) ; } if ( entry . is_persistent ) { entry . manifest_pos = i ; } entry . compressed_filesize = PHAR_GET_32 ( zipentry . compsize ) ; entry . uncompressed_filesize = PHAR_GET_32 ( zipentry . uncompsize ) ; entry . crc32 = PHAR_GET_32 ( zipentry . crc32 ) ; entry . timestamp = phar_zip_d2u_time ( zipentry . timestamp , zipentry . datestamp ) ; entry . flags = PHAR_ENT_PERM_DEF_FILE ; entry . header_offset = PHAR_GET_32 ( zipentry . offset ) ; entry . offset = entry . offset_abs = PHAR_GET_32 ( zipentry . offset ) + sizeof ( phar_zip_file_header ) + PHAR_GET_16 ( zipentry . filename_len ) + PHAR_GET_16 ( zipentry . extra_len ) ; if ( PHAR_GET_16 ( zipentry . flags ) & PHAR_ZIP_FLAG_ENCRYPTED ) { PHAR_ZIP_FAIL ( \"Cannot<S2SV_blank>process<S2SV_blank>encrypted<S2SV_blank>zip<S2SV_blank>files\" ) ; } if ( ! PHAR_GET_16 ( zipentry . filename_len ) ) { PHAR_ZIP_FAIL ( \"Cannot<S2SV_blank>process<S2SV_blank>zips<S2SV_blank>created<S2SV_blank>from<S2SV_blank>stdin<S2SV_blank>(zero-length<S2SV_blank>filename)\" ) ; } entry . filename_len = PHAR_GET_16 ( zipentry . filename_len ) ; entry . filename = ( char * ) pemalloc ( entry . filename_len + 1 , entry . is_persistent ) ; if ( entry . filename_len != php_stream_read ( fp , entry . filename , entry . filename_len ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>filename<S2SV_blank>from<S2SV_blank>central<S2SV_blank>directory,<S2SV_blank>truncated\" ) ; } entry . filename [ entry . filename_len ] = '\\\\0' ; if ( entry . filename [ entry . filename_len - 1 ] == '/' ) { entry . is_dir = 1 ; if ( entry . filename_len > 1 ) { entry . filename_len -- ; } entry . flags |= PHAR_ENT_PERM_DEF_DIR ; } else { entry . is_dir = 0 ; } if ( entry . filename_len == sizeof ( \".phar/signature.bin\" ) - 1 && ! strncmp ( entry . filename , \".phar/signature.bin\" , sizeof ( \".phar/signature.bin\" ) - 1 ) ) { size_t read ; php_stream * sigfile ; zend_off_t now ; char * sig ; now = php_stream_tell ( fp ) ; pefree ( entry . filename , entry . is_persistent ) ; sigfile = php_stream_fopen_tmpfile ( ) ; if ( ! sigfile ) { PHAR_ZIP_FAIL ( \"couldn\\'t<S2SV_blank>open<S2SV_blank>temporary<S2SV_blank>file\" ) ; } php_stream_seek ( fp , 0 , SEEK_SET ) ; php_stream_copy_to_stream_ex ( fp , sigfile , entry . header_offset , NULL ) ; php_stream_seek ( fp , PHAR_GET_32 ( locator . cdir_offset ) , SEEK_SET ) ; php_stream_copy_to_stream_ex ( fp , sigfile , beforeus - PHAR_GET_32 ( locator . cdir_offset ) , NULL ) ; if ( metadata ) { php_stream_write ( sigfile , metadata , PHAR_GET_16 ( locator . comment_len ) ) ; } php_stream_seek ( fp , sizeof ( phar_zip_file_header ) + entry . header_offset + entry . filename_len + PHAR_GET_16 ( zipentry . extra_len ) , SEEK_SET ) ; sig = ( char * ) emalloc ( entry . uncompressed_filesize ) ; read = php_stream_read ( fp , sig , entry . uncompressed_filesize ) ; <S2SV_StartBug> if ( read != entry . uncompressed_filesize ) { <S2SV_EndBug> php_stream_close ( sigfile ) ; efree ( sig ) ; PHAR_ZIP_FAIL ( \"signature<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>read\" ) ; } mydata -> sig_flags = PHAR_GET_32 ( sig ) ; if ( FAILURE == phar_verify_signature ( sigfile , php_stream_tell ( sigfile ) , mydata -> sig_flags , sig + 8 , entry . uncompressed_filesize - 8 , fname , & mydata -> signature , & mydata -> sig_len , error ) ) { efree ( sig ) ; if ( error ) { char * save ; php_stream_close ( sigfile ) ; spprintf ( & save , 4096 , \"signature<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>verified:<S2SV_blank>%s\" , * error ) ; efree ( * error ) ; PHAR_ZIP_FAIL_FREE ( save , save ) ; } else { php_stream_close ( sigfile ) ; PHAR_ZIP_FAIL ( \"signature<S2SV_blank>cannot<S2SV_blank>be<S2SV_blank>verified\" ) ; } } php_stream_close ( sigfile ) ; efree ( sig ) ; if ( i != PHAR_GET_16 ( locator . count ) - 1 ) { PHAR_ZIP_FAIL ( \"entries<S2SV_blank>exist<S2SV_blank>after<S2SV_blank>signature,<S2SV_blank>invalid<S2SV_blank>phar\" ) ; } continue ; } phar_add_virtual_dirs ( mydata , entry . filename , entry . filename_len ) ; if ( PHAR_GET_16 ( zipentry . extra_len ) ) { zend_off_t loc = php_stream_tell ( fp ) ; if ( FAILURE == phar_zip_process_extra ( fp , & entry , PHAR_GET_16 ( zipentry . extra_len ) ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"Unable<S2SV_blank>to<S2SV_blank>process<S2SV_blank>extra<S2SV_blank>field<S2SV_blank>header<S2SV_blank>for<S2SV_blank>file<S2SV_blank>in<S2SV_blank>central<S2SV_blank>directory\" ) ; } php_stream_seek ( fp , loc + PHAR_GET_16 ( zipentry . extra_len ) , SEEK_SET ) ; } switch ( PHAR_GET_16 ( zipentry . compressed ) ) { case PHAR_ZIP_COMP_NONE : break ; case PHAR_ZIP_COMP_DEFLATE : entry . flags |= PHAR_ENT_COMPRESSED_GZ ; if ( ! PHAR_G ( has_zlib ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"zlib<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>required\" ) ; } break ; case PHAR_ZIP_COMP_BZIP2 : entry . flags |= PHAR_ENT_COMPRESSED_BZ2 ; if ( ! PHAR_G ( has_bz2 ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"bzip2<S2SV_blank>extension<S2SV_blank>is<S2SV_blank>required\" ) ; } break ; case 1 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Shrunk)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 2 : case 3 : case 4 : case 5 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Reduce)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 6 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Implode)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 7 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Tokenize)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 9 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(Deflate64)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 10 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(PKWare<S2SV_blank>Implode/old<S2SV_blank>IBM<S2SV_blank>TERSE)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 14 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(LZMA)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 18 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(IBM<S2SV_blank>TERSE)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 19 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(IBM<S2SV_blank>LZ77)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 97 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(WavPack)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; case 98 : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(PPMd)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; default : pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unsupported<S2SV_blank>compression<S2SV_blank>method<S2SV_blank>(unknown)<S2SV_blank>used<S2SV_blank>in<S2SV_blank>this<S2SV_blank>zip\" ) ; } if ( PHAR_GET_16 ( zipentry . comment_len ) ) { if ( PHAR_GET_16 ( zipentry . comment_len ) != php_stream_read ( fp , buf , PHAR_GET_16 ( zipentry . comment_len ) ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>file<S2SV_blank>comment,<S2SV_blank>truncated\" ) ; } p = buf ; entry . metadata_len = PHAR_GET_16 ( zipentry . comment_len ) ; if ( phar_parse_metadata ( & p , & ( entry . metadata ) , PHAR_GET_16 ( zipentry . comment_len ) ) == FAILURE ) { entry . metadata_len = 0 ; ZVAL_NEW_STR ( & entry . metadata , zend_string_init ( buf , PHAR_GET_16 ( zipentry . comment_len ) , entry . is_persistent ) ) ; } } else { ZVAL_UNDEF ( & entry . metadata ) ; } if ( ! actual_alias && entry . filename_len == sizeof ( \".phar/alias.txt\" ) - 1 && ! strncmp ( entry . filename , \".phar/alias.txt\" , sizeof ( \".phar/alias.txt\" ) - 1 ) ) { php_stream_filter * filter ; zend_off_t saveloc ; phar_zip_file_header local ; saveloc = php_stream_tell ( fp ) ; php_stream_seek ( fp , PHAR_GET_32 ( zipentry . offset ) , SEEK_SET ) ; if ( sizeof ( local ) != php_stream_read ( fp , ( char * ) & local , sizeof ( local ) ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"phar<S2SV_blank>error:<S2SV_blank>internal<S2SV_blank>corruption<S2SV_blank>of<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>(cannot<S2SV_blank>read<S2SV_blank>local<S2SV_blank>file<S2SV_blank>header<S2SV_blank>for<S2SV_blank>alias)\" ) ; } if ( entry . filename_len != PHAR_GET_16 ( local . filename_len ) || entry . crc32 != PHAR_GET_32 ( local . crc32 ) || entry . uncompressed_filesize != PHAR_GET_32 ( local . uncompsize ) || entry . compressed_filesize != PHAR_GET_32 ( local . compsize ) ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"phar<S2SV_blank>error:<S2SV_blank>internal<S2SV_blank>corruption<S2SV_blank>of<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>(local<S2SV_blank>header<S2SV_blank>of<S2SV_blank>alias<S2SV_blank>does<S2SV_blank>not<S2SV_blank>match<S2SV_blank>central<S2SV_blank>directory)\" ) ; } entry . offset = entry . offset_abs = sizeof ( local ) + entry . header_offset + PHAR_GET_16 ( local . filename_len ) + PHAR_GET_16 ( local . extra_len ) ; php_stream_seek ( fp , entry . offset , SEEK_SET ) ; fp -> writepos = 0 ; fp -> readpos = 0 ; php_stream_seek ( fp , entry . offset , SEEK_SET ) ; fp -> writepos = 0 ; fp -> readpos = 0 ; mydata -> alias_len = entry . uncompressed_filesize ; if ( entry . flags & PHAR_ENT_COMPRESSED_GZ ) { filter = php_stream_filter_create ( \"zlib.inflate\" , NULL , php_stream_is_persistent ( fp ) ) ; if ( ! filter ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>decompress<S2SV_blank>alias,<S2SV_blank>zlib<S2SV_blank>filter<S2SV_blank>creation<S2SV_blank>failed\" ) ; } php_stream_filter_append ( & fp -> readfilters , filter ) ; { zend_string * str = php_stream_copy_to_mem ( fp , entry . uncompressed_filesize , 0 ) ; if ( str ) { entry . uncompressed_filesize = ZSTR_LEN ( str ) ; actual_alias = estrndup ( ZSTR_VAL ( str ) , ZSTR_LEN ( str ) ) ; zend_string_release ( str ) ; } else { actual_alias = NULL ; entry . uncompressed_filesize = 0 ; } } if ( ! entry . uncompressed_filesize || ! actual_alias ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>alias,<S2SV_blank>truncated\" ) ; } php_stream_filter_flush ( filter , 1 ) ; php_stream_filter_remove ( filter , 1 ) ; } else if ( entry . flags & PHAR_ENT_COMPRESSED_BZ2 ) { filter = php_stream_filter_create ( \"bzip2.decompress\" , NULL , php_stream_is_persistent ( fp ) ) ; if ( ! filter ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>alias,<S2SV_blank>bzip2<S2SV_blank>filter<S2SV_blank>creation<S2SV_blank>failed\" ) ; } php_stream_filter_append ( & fp -> readfilters , filter ) ; { zend_string * str = php_stream_copy_to_mem ( fp , entry . uncompressed_filesize , 0 ) ; if ( str ) { entry . uncompressed_filesize = ZSTR_LEN ( str ) ; actual_alias = estrndup ( ZSTR_VAL ( str ) , ZSTR_LEN ( str ) ) ; zend_string_release ( str ) ; } else { actual_alias = NULL ; entry . uncompressed_filesize = 0 ; } } if ( ! entry . uncompressed_filesize || ! actual_alias ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>alias,<S2SV_blank>truncated\" ) ; } php_stream_filter_flush ( filter , 1 ) ; php_stream_filter_remove ( filter , 1 ) ; } else { { zend_string * str = php_stream_copy_to_mem ( fp , entry . uncompressed_filesize , 0 ) ; if ( str ) { entry . uncompressed_filesize = ZSTR_LEN ( str ) ; actual_alias = estrndup ( ZSTR_VAL ( str ) , ZSTR_LEN ( str ) ) ; zend_string_release ( str ) ; } else { actual_alias = NULL ; entry . uncompressed_filesize = 0 ; } } if ( ! entry . uncompressed_filesize || ! actual_alias ) { pefree ( entry . filename , entry . is_persistent ) ; PHAR_ZIP_FAIL ( \"unable<S2SV_blank>to<S2SV_blank>read<S2SV_blank>in<S2SV_blank>alias,<S2SV_blank>truncated\" ) ; } } php_stream_seek ( fp , saveloc , SEEK_SET ) ; } phar_set_inode ( & entry ) ; zend_hash_str_add_mem ( & mydata -> manifest , entry . filename , entry . filename_len , ( void * ) & entry , sizeof ( phar_entry_info ) ) ; } mydata -> fp = fp ; if ( zend_hash_str_exists ( & ( mydata -> manifest ) , \".phar/stub.php\" , sizeof ( \".phar/stub.php\" ) - 1 ) ) { mydata -> is_data = 0 ; } else { mydata -> is_data = 1 ; } zend_hash_str_add_ptr ( & ( PHAR_G ( phar_fname_map ) ) , mydata -> fname , fname_len , mydata ) ; if ( actual_alias ) { phar_archive_data * fd_ptr ; if ( ! phar_validate_alias ( actual_alias , mydata -> alias_len ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>invalid<S2SV_blank>alias<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>in<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"\" , actual_alias , fname ) ; } efree ( actual_alias ) ; zend_hash_str_del ( & ( PHAR_G ( phar_fname_map ) ) , mydata -> fname , fname_len ) ; return FAILURE ; } mydata -> is_temporary_alias = 0 ; if ( NULL != ( fd_ptr = zend_hash_str_find_ptr ( & ( PHAR_G ( phar_alias_map ) ) , actual_alias , mydata -> alias_len ) ) ) { if ( SUCCESS != phar_free_alias ( fd_ptr , actual_alias , mydata -> alias_len ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>add<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>with<S2SV_blank>implicit<S2SV_blank>alias,<S2SV_blank>alias<S2SV_blank>is<S2SV_blank>already<S2SV_blank>in<S2SV_blank>use\" , fname ) ; } efree ( actual_alias ) ; zend_hash_str_del ( & ( PHAR_G ( phar_fname_map ) ) , mydata -> fname , fname_len ) ; return FAILURE ; } } mydata -> alias = entry . is_persistent ? pestrndup ( actual_alias , mydata -> alias_len , 1 ) : actual_alias ; if ( entry . is_persistent ) { efree ( actual_alias ) ; } zend_hash_str_add_ptr ( & ( PHAR_G ( phar_alias_map ) ) , actual_alias , mydata -> alias_len , mydata ) ; } else { phar_archive_data * fd_ptr ; if ( alias_len ) { if ( NULL != ( fd_ptr = zend_hash_str_find_ptr ( & ( PHAR_G ( phar_alias_map ) ) , alias , alias_len ) ) ) { if ( SUCCESS != phar_free_alias ( fd_ptr , alias , alias_len ) ) { if ( error ) { spprintf ( error , 4096 , \"phar<S2SV_blank>error:<S2SV_blank>Unable<S2SV_blank>to<S2SV_blank>add<S2SV_blank>zip-based<S2SV_blank>phar<S2SV_blank>\\\\\"%s\\\\\"<S2SV_blank>with<S2SV_blank>explicit<S2SV_blank>alias,<S2SV_blank>alias<S2SV_blank>is<S2SV_blank>already<S2SV_blank>in<S2SV_blank>use\" , fname ) ; } zend_hash_str_del ( & ( PHAR_G ( phar_fname_map ) ) , mydata -> fname , fname_len ) ; return FAILURE ; } } zend_hash_str_add_ptr ( & ( PHAR_G ( phar_alias_map ) ) , actual_alias , mydata -> alias_len , mydata ) ; mydata -> alias = pestrndup ( alias , alias_len , mydata -> is_persistent ) ; mydata -> alias_len = alias_len ; } else { mydata -> alias = pestrndup ( mydata -> fname , fname_len , mydata -> is_persistent ) ; mydata -> alias_len = fname_len ; } mydata -> is_temporary_alias = 1 ; } if ( pphar ) { * pphar = mydata ; } return SUCCESS ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> entry . uncompressed_filesize || read <= 8\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static int64_t rd_sbuv_dcpred ( const VP9_COMP * cpi , MACROBLOCK * x , int * rate , int * rate_tokenonly , int64_t * distortion , int * skippable , BLOCK_SIZE bsize ) { const VP9_COMMON * cm = & cpi -> common ; int64_t unused ; x -> e_mbd . mi [ 0 ] -> mbmi . uv_mode = DC_PRED ; <S2SV_StartBug> super_block_uvrd ( cpi , x , rate_tokenonly , distortion , <S2SV_EndBug> skippable , & unused , bsize , INT64_MAX ) ; <S2SV_StartBug> * rate = * rate_tokenonly + x -> intra_uv_mode_cost [ cm -> frame_type ] [ DC_PRED ] ; <S2SV_EndBug> return RDCOST ( x -> rdmult , x -> rddiv , * rate , * distortion ) ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = DC_PRED ; memset ( x -> skip_txfm , SKIP_TXFM_NONE , sizeof ( x -> skip_txfm ) ) ; <S2SV_ModStart> * rate_tokenonly + cpi <S2SV_ModEnd> -> intra_uv_mode_cost [\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2015-3905\n\n```\nCWE-119 static int translate_hex_string ( char * s , char * saved_orphan ) { int c1 = * saved_orphan ; char * start = s ; char * t = s ; for ( ; * s ; s ++ ) { <S2SV_StartBug> if ( isspace ( * s ) ) <S2SV_EndBug> continue ; if ( c1 ) { * t ++ = ( hexval ( c1 ) << 4 ) + hexval ( * s ) ; c1 = 0 ; } else c1 = * s ; } * saved_orphan = c1 ; return t - start ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> ( isspace ( ( unsigned char )\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-119(缓冲区边界限制不当)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-1621\n\n```\nCWE-119 static void update_best_mode ( BEST_MODE * best_mode , int this_rd , RATE_DISTORTION * rd , int other_cost , MACROBLOCK * x ) { MB_PREDICTION_MODE this_mode = x -> e_mbd . mode_info_context -> mbmi . mode ; other_cost += x -> ref_frame_cost [ x -> e_mbd . mode_info_context -> mbmi . ref_frame ] ; best_mode -> yrd = RDCOST ( x -> rdmult , x -> rddiv , ( rd -> rate2 - rd -> rate_uv - other_cost ) , ( rd -> distortion2 - rd -> distortion_uv ) ) ; best_mode -> rd = this_rd ; <S2SV_StartBug> vpx_memcpy ( & best_mode -> mbmode , & x -> e_mbd . mode_info_context -> mbmi , sizeof ( MB_MODE_INFO ) ) ; <S2SV_EndBug> <S2SV_StartBug> vpx_memcpy ( & best_mode -> partition , x -> partition_info , sizeof ( PARTITION_INFO ) ) ; <S2SV_EndBug> if ( ( this_mode == B_PRED ) || ( this_mode == SPLITMV ) ) { int i ; for ( i = 0 ; i < 16 ; i ++ ) { best_mode -> bmodes [ i ] = x -> e_mbd . block [ i ] . bmi ; } } }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> = this_rd ; memcpy <S2SV_ModEnd> ( & best_mode <S2SV_ModStart> ) ) ; memcpy <S2SV_ModEnd> ( & best_mode\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-190(整数溢出或回绕)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2016-5767\n\n```\nCWE-190 gdImagePtr gdImageCreate ( int sx , int sy ) { int i ; gdImagePtr im ; if ( overflow2 ( sx , sy ) ) { return NULL ; } if ( overflow2 ( sizeof ( unsigned char * ) , sy ) ) { return NULL ; } <S2SV_StartBug> im = ( gdImage * ) gdCalloc ( 1 , sizeof ( gdImage ) ) ; <S2SV_EndBug> im -> pixels = ( unsigned char * * ) gdMalloc ( sizeof ( unsigned char * ) * sy ) ; im -> AA_opacity = ( unsigned char * * ) gdMalloc ( sizeof ( unsigned char * ) * sy ) ; im -> polyInts = 0 ; im -> polyAllocated = 0 ; im -> brush = 0 ; im -> tile = 0 ; im -> style = 0 ; for ( i = 0 ; i < sy ; i ++ ) { im -> pixels [ i ] = ( unsigned char * ) gdCalloc ( sx , sizeof ( unsigned char ) ) ; im -> AA_opacity [ i ] = ( unsigned char * ) gdCalloc ( sx , sizeof ( unsigned char ) ) ; } im -> sx = sx ; im -> sy = sy ; im -> colorsTotal = 0 ; im -> transparent = ( - 1 ) ; im -> interlace = 0 ; im -> thick = 1 ; im -> AA = 0 ; im -> AA_polygon = 0 ; for ( i = 0 ; i < gdMaxColors ; i ++ ) { im -> open [ i ] = 1 ; im -> red [ i ] = 0 ; im -> green [ i ] = 0 ; im -> blue [ i ] = 0 ; } im -> trueColor = 0 ; im -> tpixels = 0 ; im -> cx1 = 0 ; im -> cy1 = 0 ; im -> cx2 = im -> sx - 1 ; im -> cy2 = im -> sy - 1 ; im -> interpolation = NULL ; im -> interpolation_id = GD_BILINEAR_FIXED ; return im ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> NULL ; } if ( overflow2 ( sizeof ( unsigned char * ) , sx ) ) { return NULL ; }\n\n```"
  },
  {
    "instruction": "修复以下代码中的CWE-125(越界读取)漏洞。请提供修复后的代码。",
    "input": "CVE-ID: CVE-2017-9224\n\n```\nCWE-125 static int match_at ( regex_t * reg , const UChar * str , const UChar * end , # ifdef USE_MATCH_RANGE_MUST_BE_INSIDE_OF_SPECIFIED_RANGE const UChar * right_range , # endif const UChar * sstart , UChar * sprev , OnigMatchArg * msa ) { static UChar FinishCode [ ] = { OP_FINISH } ; int i , n , num_mem , best_len , pop_level ; LengthType tlen , tlen2 ; MemNumType mem ; RelAddrType addr ; UChar * s , * q , * sbegin ; int is_alloca ; char * alloc_base ; OnigStackType * stk_base , * stk , * stk_end ; OnigStackType * stkp ; OnigStackIndex si ; OnigStackIndex * repeat_stk ; OnigStackIndex * mem_start_stk , * mem_end_stk ; # ifdef USE_COMBINATION_EXPLOSION_CHECK int scv ; unsigned char * state_check_buff = msa -> state_check_buff ; int num_comb_exp_check = reg -> num_comb_exp_check ; # endif UChar * p = reg -> p ; OnigOptionType option = reg -> options ; OnigEncoding encode = reg -> enc ; OnigCaseFoldType case_fold_flag = reg -> case_fold_flag ; pop_level = reg -> stack_pop_level ; num_mem = reg -> num_mem ; STACK_INIT ( INIT_MATCH_STACK_SIZE ) ; UPDATE_FOR_STACK_REALLOC ; for ( i = 1 ; i <= num_mem ; i ++ ) { mem_start_stk [ i ] = mem_end_stk [ i ] = INVALID_STACK_INDEX ; } # ifdef ONIG_DEBUG_MATCH fprintf ( stderr , \"match_at:<S2SV_blank>str:<S2SV_blank>%d,<S2SV_blank>end:<S2SV_blank>%d,<S2SV_blank>start:<S2SV_blank>%d,<S2SV_blank>sprev:<S2SV_blank>%d\\\\n\" , ( int ) str , ( int ) end , ( int ) sstart , ( int ) sprev ) ; fprintf ( stderr , \"size:<S2SV_blank>%d,<S2SV_blank>start<S2SV_blank>offset:<S2SV_blank>%d\\\\n\" , ( int ) ( end - str ) , ( int ) ( sstart - str ) ) ; # endif STACK_PUSH_ENSURED ( STK_ALT , FinishCode ) ; best_len = ONIG_MISMATCH ; s = ( UChar * ) sstart ; while ( 1 ) { # ifdef ONIG_DEBUG_MATCH { UChar * q , * bp , buf [ 50 ] ; int len ; fprintf ( stderr , \"%4d><S2SV_blank>\\\\\"\" , ( int ) ( s - str ) ) ; bp = buf ; for ( i = 0 , q = s ; i < 7 && q < end ; i ++ ) { len = enclen ( encode , q ) ; while ( len -- > 0 ) * bp ++ = * q ++ ; } if ( q < end ) { xmemcpy ( bp , \"...\\\\\"\" , 4 ) ; bp += 4 ; } else { xmemcpy ( bp , \"\\\\\"\" , 1 ) ; bp += 1 ; } * bp = 0 ; fputs ( ( char * ) buf , stderr ) ; for ( i = 0 ; i < 20 - ( bp - buf ) ; i ++ ) fputc ( '<S2SV_blank>' , stderr ) ; onig_print_compiled_byte_code ( stderr , p , NULL , encode ) ; fprintf ( stderr , \"\\\\n\" ) ; } # endif sbegin = s ; switch ( * p ++ ) { case OP_END : MOP_IN ( OP_END ) ; n = s - sstart ; if ( n > best_len ) { OnigRegion * region ; # ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE if ( IS_FIND_LONGEST ( option ) ) { if ( n > msa -> best_len ) { msa -> best_len = n ; msa -> best_s = ( UChar * ) sstart ; } else goto end_best_len ; } # endif best_len = n ; region = msa -> region ; if ( region ) { # ifdef USE_POSIX_API_REGION_OPTION if ( IS_POSIX_REGION ( msa -> options ) ) { posix_regmatch_t * rmt = ( posix_regmatch_t * ) region ; rmt [ 0 ] . rm_so = sstart - str ; rmt [ 0 ] . rm_eo = s - str ; for ( i = 1 ; i <= num_mem ; i ++ ) { if ( mem_end_stk [ i ] != INVALID_STACK_INDEX ) { if ( BIT_STATUS_AT ( reg -> bt_mem_start , i ) ) rmt [ i ] . rm_so = STACK_AT ( mem_start_stk [ i ] ) -> u . mem . pstr - str ; else rmt [ i ] . rm_so = ( UChar * ) ( ( void * ) ( mem_start_stk [ i ] ) ) - str ; rmt [ i ] . rm_eo = ( BIT_STATUS_AT ( reg -> bt_mem_end , i ) ? STACK_AT ( mem_end_stk [ i ] ) -> u . mem . pstr : ( UChar * ) ( ( void * ) mem_end_stk [ i ] ) ) - str ; } else { rmt [ i ] . rm_so = rmt [ i ] . rm_eo = ONIG_REGION_NOTPOS ; } } } else { # endif region -> beg [ 0 ] = sstart - str ; region -> end [ 0 ] = s - str ; for ( i = 1 ; i <= num_mem ; i ++ ) { if ( mem_end_stk [ i ] != INVALID_STACK_INDEX ) { if ( BIT_STATUS_AT ( reg -> bt_mem_start , i ) ) region -> beg [ i ] = STACK_AT ( mem_start_stk [ i ] ) -> u . mem . pstr - str ; else region -> beg [ i ] = ( UChar * ) ( ( void * ) mem_start_stk [ i ] ) - str ; region -> end [ i ] = ( BIT_STATUS_AT ( reg -> bt_mem_end , i ) ? STACK_AT ( mem_end_stk [ i ] ) -> u . mem . pstr : ( UChar * ) ( ( void * ) mem_end_stk [ i ] ) ) - str ; } else { region -> beg [ i ] = region -> end [ i ] = ONIG_REGION_NOTPOS ; } } # ifdef USE_CAPTURE_HISTORY if ( reg -> capture_history != 0 ) { int r ; OnigCaptureTreeNode * node ; if ( IS_NULL ( region -> history_root ) ) { region -> history_root = node = history_node_new ( ) ; CHECK_NULL_RETURN_MEMERR ( node ) ; } else { node = region -> history_root ; history_tree_clear ( node ) ; } node -> group = 0 ; node -> beg = sstart - str ; node -> end = s - str ; stkp = stk_base ; r = make_capture_history_tree ( region -> history_root , & stkp , stk , ( UChar * ) str , reg ) ; if ( r < 0 ) { best_len = r ; goto finish ; } } # endif # ifdef USE_POSIX_API_REGION_OPTION } # endif } } # ifdef USE_FIND_LONGEST_SEARCH_ALL_OF_RANGE end_best_len : # endif MOP_OUT ; if ( IS_FIND_CONDITION ( option ) ) { if ( IS_FIND_NOT_EMPTY ( option ) && s == sstart ) { best_len = ONIG_MISMATCH ; goto fail ; } if ( IS_FIND_LONGEST ( option ) && DATA_ENSURE_CHECK1 ) { goto fail ; } } goto finish ; break ; case OP_EXACT1 : MOP_IN ( OP_EXACT1 ) ; <S2SV_StartBug> # if 0 <S2SV_EndBug> DATA_ENSURE ( 1 ) ; if ( * p != * s ) goto fail ; <S2SV_StartBug> p ++ ; s ++ ; <S2SV_EndBug> # endif if ( * p != * s ++ ) goto fail ; DATA_ENSURE ( 0 ) ; p ++ ; MOP_OUT ; break ; case OP_EXACT1_IC : MOP_IN ( OP_EXACT1_IC ) ; { int len ; UChar * q , lowbuf [ ONIGENC_MBC_CASE_FOLD_MAXLEN ] ; DATA_ENSURE ( 1 ) ; len = ONIGENC_MBC_CASE_FOLD ( encode , case_fold_flag , & s , end , lowbuf ) ; DATA_ENSURE ( 0 ) ; q = lowbuf ; while ( len -- > 0 ) { if ( * p != * q ) { goto fail ; } p ++ ; q ++ ; } } MOP_OUT ; break ; case OP_EXACT2 : MOP_IN ( OP_EXACT2 ) ; DATA_ENSURE ( 2 ) ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; sprev = s ; p ++ ; s ++ ; MOP_OUT ; continue ; break ; case OP_EXACT3 : MOP_IN ( OP_EXACT3 ) ; DATA_ENSURE ( 3 ) ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; sprev = s ; p ++ ; s ++ ; MOP_OUT ; continue ; break ; case OP_EXACT4 : MOP_IN ( OP_EXACT4 ) ; DATA_ENSURE ( 4 ) ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; sprev = s ; p ++ ; s ++ ; MOP_OUT ; continue ; break ; case OP_EXACT5 : MOP_IN ( OP_EXACT5 ) ; DATA_ENSURE ( 5 ) ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; sprev = s ; p ++ ; s ++ ; MOP_OUT ; continue ; break ; case OP_EXACTN : MOP_IN ( OP_EXACTN ) ; GET_LENGTH_INC ( tlen , p ) ; DATA_ENSURE ( tlen ) ; while ( tlen -- > 0 ) { if ( * p ++ != * s ++ ) goto fail ; } sprev = s - 1 ; MOP_OUT ; continue ; break ; case OP_EXACTN_IC : MOP_IN ( OP_EXACTN_IC ) ; { int len ; UChar * q , * endp , lowbuf [ ONIGENC_MBC_CASE_FOLD_MAXLEN ] ; GET_LENGTH_INC ( tlen , p ) ; endp = p + tlen ; while ( p < endp ) { sprev = s ; DATA_ENSURE ( 1 ) ; len = ONIGENC_MBC_CASE_FOLD ( encode , case_fold_flag , & s , end , lowbuf ) ; DATA_ENSURE ( 0 ) ; q = lowbuf ; while ( len -- > 0 ) { if ( * p != * q ) goto fail ; p ++ ; q ++ ; } } } MOP_OUT ; continue ; break ; case OP_EXACTMB2N1 : MOP_IN ( OP_EXACTMB2N1 ) ; DATA_ENSURE ( 2 ) ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; MOP_OUT ; break ; case OP_EXACTMB2N2 : MOP_IN ( OP_EXACTMB2N2 ) ; DATA_ENSURE ( 4 ) ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; sprev = s ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; MOP_OUT ; continue ; break ; case OP_EXACTMB2N3 : MOP_IN ( OP_EXACTMB2N3 ) ; DATA_ENSURE ( 6 ) ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; sprev = s ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; MOP_OUT ; continue ; break ; case OP_EXACTMB2N : MOP_IN ( OP_EXACTMB2N ) ; GET_LENGTH_INC ( tlen , p ) ; DATA_ENSURE ( tlen * 2 ) ; while ( tlen -- > 0 ) { if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; } sprev = s - 2 ; MOP_OUT ; continue ; break ; case OP_EXACTMB3N : MOP_IN ( OP_EXACTMB3N ) ; GET_LENGTH_INC ( tlen , p ) ; DATA_ENSURE ( tlen * 3 ) ; while ( tlen -- > 0 ) { if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; if ( * p != * s ) goto fail ; p ++ ; s ++ ; } sprev = s - 3 ; MOP_OUT ; continue ; break ; case OP_EXACTMBN : MOP_IN ( OP_EXACTMBN ) ; GET_LENGTH_INC ( tlen , p ) ; GET_LENGTH_INC ( tlen2 , p ) ; tlen2 *= tlen ; DATA_ENSURE ( tlen2 ) ; while ( tlen2 -- > 0 ) { if ( * p != * s ) goto fail ; p ++ ; s ++ ; } sprev = s - tlen ; MOP_OUT ; continue ; break ; case OP_CCLASS : MOP_IN ( OP_CCLASS ) ; DATA_ENSURE ( 1 ) ; if ( BITSET_AT ( ( ( BitSetRef ) p ) , * s ) == 0 ) goto fail ; p += SIZE_BITSET ; s += enclen ( encode , s ) ; MOP_OUT ; break ; case OP_CCLASS_MB : MOP_IN ( OP_CCLASS_MB ) ; if ( ! ONIGENC_IS_MBC_HEAD ( encode , s ) ) goto fail ; cclass_mb : GET_LENGTH_INC ( tlen , p ) ; { OnigCodePoint code ; UChar * ss ; int mb_len ; DATA_ENSURE ( 1 ) ; mb_len = enclen ( encode , s ) ; DATA_ENSURE ( mb_len ) ; ss = s ; s += mb_len ; code = ONIGENC_MBC_TO_CODE ( encode , ss , s ) ; # ifdef PLATFORM_UNALIGNED_WORD_ACCESS if ( ! onig_is_in_code_range ( p , code ) ) goto fail ; # else q = p ; ALIGNMENT_RIGHT ( q ) ; if ( ! onig_is_in_code_range ( q , code ) ) goto fail ; # endif } p += tlen ; MOP_OUT ; break ; case OP_CCLASS_MIX : MOP_IN ( OP_CCLASS_MIX ) ; DATA_ENSURE ( 1 ) ; if ( ONIGENC_IS_MBC_HEAD ( encode , s ) ) { p += SIZE_BITSET ; goto cclass_mb ; } else { if ( BITSET_AT ( ( ( BitSetRef ) p ) , * s ) == 0 ) goto fail ; p += SIZE_BITSET ; GET_LENGTH_INC ( tlen , p ) ; p += tlen ; s ++ ; } MOP_OUT ; break ; case OP_CCLASS_NOT : MOP_IN ( OP_CCLASS_NOT ) ; DATA_ENSURE ( 1 ) ; if ( BITSET_AT ( ( ( BitSetRef ) p ) , * s ) != 0 ) goto fail ; p += SIZE_BITSET ; s += enclen ( encode , s ) ; MOP_OUT ; break ; case OP_CCLASS_MB_NOT : MOP_IN ( OP_CCLASS_MB_NOT ) ; DATA_ENSURE ( 1 ) ; if ( ! ONIGENC_IS_MBC_HEAD ( encode , s ) ) { s ++ ; GET_LENGTH_INC ( tlen , p ) ; p += tlen ; goto cc_mb_not_success ; } cclass_mb_not : GET_LENGTH_INC ( tlen , p ) ; { OnigCodePoint code ; UChar * ss ; int mb_len = enclen ( encode , s ) ; if ( ! DATA_ENSURE_CHECK ( mb_len ) ) { DATA_ENSURE ( 1 ) ; s = ( UChar * ) end ; p += tlen ; goto cc_mb_not_success ; } ss = s ; s += mb_len ; code = ONIGENC_MBC_TO_CODE ( encode , ss , s ) ; # ifdef PLATFORM_UNALIGNED_WORD_ACCESS if ( onig_is_in_code_range ( p , code ) ) goto fail ; # else q = p ; ALIGNMENT_RIGHT ( q ) ; if ( onig_is_in_code_range ( q , code ) ) goto fail ; # endif } p += tlen ; cc_mb_not_success : MOP_OUT ; break ; case OP_CCLASS_MIX_NOT : MOP_IN ( OP_CCLASS_MIX_NOT ) ; DATA_ENSURE ( 1 ) ; if ( ONIGENC_IS_MBC_HEAD ( encode , s ) ) { p += SIZE_BITSET ; goto cclass_mb_not ; } else { if ( BITSET_AT ( ( ( BitSetRef ) p ) , * s ) != 0 ) goto fail ; p += SIZE_BITSET ; GET_LENGTH_INC ( tlen , p ) ; p += tlen ; s ++ ; } MOP_OUT ; break ; case OP_CCLASS_NODE : MOP_IN ( OP_CCLASS_NODE ) ; { OnigCodePoint code ; void * node ; int mb_len ; UChar * ss ; DATA_ENSURE ( 1 ) ; GET_POINTER_INC ( node , p ) ; mb_len = enclen ( encode , s ) ; ss = s ; s += mb_len ; DATA_ENSURE ( 0 ) ; code = ONIGENC_MBC_TO_CODE ( encode , ss , s ) ; if ( onig_is_code_in_cc_len ( mb_len , code , node ) == 0 ) goto fail ; } MOP_OUT ; break ; case OP_ANYCHAR : MOP_IN ( OP_ANYCHAR ) ; DATA_ENSURE ( 1 ) ; n = enclen ( encode , s ) ; DATA_ENSURE ( n ) ; if ( ONIGENC_IS_MBC_NEWLINE ( encode , s , end ) ) goto fail ; s += n ; MOP_OUT ; break ; case OP_ANYCHAR_ML : MOP_IN ( OP_ANYCHAR_ML ) ; DATA_ENSURE ( 1 ) ; n = enclen ( encode , s ) ; DATA_ENSURE ( n ) ; s += n ; MOP_OUT ; break ; case OP_ANYCHAR_STAR : MOP_IN ( OP_ANYCHAR_STAR ) ; while ( DATA_ENSURE_CHECK1 ) { STACK_PUSH_ALT ( p , s , sprev ) ; n = enclen ( encode , s ) ; DATA_ENSURE ( n ) ; if ( ONIGENC_IS_MBC_NEWLINE ( encode , s , end ) ) goto fail ; sprev = s ; s += n ; } MOP_OUT ; break ; case OP_ANYCHAR_ML_STAR : MOP_IN ( OP_ANYCHAR_ML_STAR ) ; while ( DATA_ENSURE_CHECK1 ) { STACK_PUSH_ALT ( p , s , sprev ) ; n = enclen ( encode , s ) ; if ( n > 1 ) { DATA_ENSURE ( n ) ; sprev = s ; s += n ; } else { sprev = s ; s ++ ; } } MOP_OUT ; break ; case OP_ANYCHAR_STAR_PEEK_NEXT : MOP_IN ( OP_ANYCHAR_STAR_PEEK_NEXT ) ; while ( DATA_ENSURE_CHECK1 ) { if ( * p == * s ) { STACK_PUSH_ALT ( p + 1 , s , sprev ) ; } n = enclen ( encode , s ) ; DATA_ENSURE ( n ) ; if ( ONIGENC_IS_MBC_NEWLINE ( encode , s , end ) ) goto fail ; sprev = s ; s += n ; } p ++ ; MOP_OUT ; break ; case OP_ANYCHAR_ML_STAR_PEEK_NEXT : MOP_IN ( OP_ANYCHAR_ML_STAR_PEEK_NEXT ) ; while ( DATA_ENSURE_CHECK1 ) { if ( * p == * s ) { STACK_PUSH_ALT ( p + 1 , s , sprev ) ; } n = enclen ( encode , s ) ; if ( n > 1 ) { DATA_ENSURE ( n ) ; sprev = s ; s += n ; } else { sprev = s ; s ++ ; } } p ++ ; MOP_OUT ; break ; # ifdef USE_COMBINATION_EXPLOSION_CHECK case OP_STATE_CHECK_ANYCHAR_STAR : MOP_IN ( OP_STATE_CHECK_ANYCHAR_STAR ) ; GET_STATE_CHECK_NUM_INC ( mem , p ) ; while ( DATA_ENSURE_CHECK1 ) { STATE_CHECK_VAL ( scv , mem ) ; if ( scv ) goto fail ; STACK_PUSH_ALT_WITH_STATE_CHECK ( p , s , sprev , mem ) ; n = enclen ( encode , s ) ; DATA_ENSURE ( n ) ; if ( ONIGENC_IS_MBC_NEWLINE ( encode , s , end ) ) goto fail ; sprev = s ; s += n ; } MOP_OUT ; break ; case OP_STATE_CHECK_ANYCHAR_ML_STAR : MOP_IN ( OP_STATE_CHECK_ANYCHAR_ML_STAR ) ; GET_STATE_CHECK_NUM_INC ( mem , p ) ; while ( DATA_ENSURE_CHECK1 ) { STATE_CHECK_VAL ( scv , mem ) ; if ( scv ) goto fail ; STACK_PUSH_ALT_WITH_STATE_CHECK ( p , s , sprev , mem ) ; n = enclen ( encode , s ) ; if ( n > 1 ) { DATA_ENSURE ( n ) ; sprev = s ; s += n ; } else { sprev = s ; s ++ ; } } MOP_OUT ; break ; # endif case OP_WORD : MOP_IN ( OP_WORD ) ; DATA_ENSURE ( 1 ) ; if ( ! ONIGENC_IS_MBC_WORD ( encode , s , end ) ) goto fail ; s += enclen ( encode , s ) ; MOP_OUT ; break ; case OP_NOT_WORD : MOP_IN ( OP_NOT_WORD ) ; DATA_ENSURE ( 1 ) ; if ( ONIGENC_IS_MBC_WORD ( encode , s , end ) ) goto fail ; s += enclen ( encode , s ) ; MOP_OUT ; break ; case OP_WORD_BOUND : MOP_IN ( OP_WORD_BOUND ) ; if ( ON_STR_BEGIN ( s ) ) { DATA_ENSURE ( 1 ) ; if ( ! ONIGENC_IS_MBC_WORD ( encode , s , end ) ) goto fail ; } else if ( ON_STR_END ( s ) ) { if ( ! ONIGENC_IS_MBC_WORD ( encode , sprev , end ) ) goto fail ; } else { if ( ONIGENC_IS_MBC_WORD ( encode , s , end ) == ONIGENC_IS_MBC_WORD ( encode , sprev , end ) ) goto fail ; } MOP_OUT ; continue ; break ; case OP_NOT_WORD_BOUND : MOP_IN ( OP_NOT_WORD_BOUND ) ; if ( ON_STR_BEGIN ( s ) ) { if ( DATA_ENSURE_CHECK1 && ONIGENC_IS_MBC_WORD ( encode , s , end ) ) goto fail ; } else if ( ON_STR_END ( s ) ) { if ( ONIGENC_IS_MBC_WORD ( encode , sprev , end ) ) goto fail ; } else { if ( ONIGENC_IS_MBC_WORD ( encode , s , end ) != ONIGENC_IS_MBC_WORD ( encode , sprev , end ) ) goto fail ; } MOP_OUT ; continue ; break ; # ifdef USE_WORD_BEGIN_END case OP_WORD_BEGIN : MOP_IN ( OP_WORD_BEGIN ) ; if ( DATA_ENSURE_CHECK1 && ONIGENC_IS_MBC_WORD ( encode , s , end ) ) { if ( ON_STR_BEGIN ( s ) || ! ONIGENC_IS_MBC_WORD ( encode , sprev , end ) ) { MOP_OUT ; continue ; } } goto fail ; break ; case OP_WORD_END : MOP_IN ( OP_WORD_END ) ; if ( ! ON_STR_BEGIN ( s ) && ONIGENC_IS_MBC_WORD ( encode , sprev , end ) ) { if ( ON_STR_END ( s ) || ! ONIGENC_IS_MBC_WORD ( encode , s , end ) ) { MOP_OUT ; continue ; } } goto fail ; break ; # endif case OP_BEGIN_BUF : MOP_IN ( OP_BEGIN_BUF ) ; if ( ! ON_STR_BEGIN ( s ) ) goto fail ; MOP_OUT ; continue ; break ; case OP_END_BUF : MOP_IN ( OP_END_BUF ) ; if ( ! ON_STR_END ( s ) ) goto fail ; MOP_OUT ; continue ; break ; case OP_BEGIN_LINE : MOP_IN ( OP_BEGIN_LINE ) ; if ( ON_STR_BEGIN ( s ) ) { if ( IS_NOTBOL ( msa -> options ) ) goto fail ; MOP_OUT ; continue ; } else if ( ONIGENC_IS_MBC_NEWLINE ( encode , sprev , end ) && ! ON_STR_END ( s ) ) { MOP_OUT ; continue ; } goto fail ; break ; case OP_END_LINE : MOP_IN ( OP_END_LINE ) ; if ( ON_STR_END ( s ) ) { # ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE if ( IS_EMPTY_STR || ! ONIGENC_IS_MBC_NEWLINE ( encode , sprev , end ) ) { # endif if ( IS_NOTEOL ( msa -> options ) ) goto fail ; MOP_OUT ; continue ; # ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE } # endif } else if ( ONIGENC_IS_MBC_NEWLINE ( encode , s , end ) ) { MOP_OUT ; continue ; } # ifdef USE_CRNL_AS_LINE_TERMINATOR else if ( ONIGENC_IS_MBC_CRNL ( encode , s , end ) ) { MOP_OUT ; continue ; } # endif goto fail ; break ; case OP_SEMI_END_BUF : MOP_IN ( OP_SEMI_END_BUF ) ; if ( ON_STR_END ( s ) ) { # ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE if ( IS_EMPTY_STR || ! ONIGENC_IS_MBC_NEWLINE ( encode , sprev , end ) ) { # endif if ( IS_NOTEOL ( msa -> options ) ) goto fail ; MOP_OUT ; continue ; # ifndef USE_NEWLINE_AT_END_OF_STRING_HAS_EMPTY_LINE } # endif } else if ( ONIGENC_IS_MBC_NEWLINE ( encode , s , end ) && ON_STR_END ( s + enclen ( encode , s ) ) ) { MOP_OUT ; continue ; } # ifdef USE_CRNL_AS_LINE_TERMINATOR else if ( ONIGENC_IS_MBC_CRNL ( encode , s , end ) ) { UChar * ss = s + enclen ( encode , s ) ; ss += enclen ( encode , ss ) ; if ( ON_STR_END ( ss ) ) { MOP_OUT ; continue ; } } # endif goto fail ; break ; case OP_BEGIN_POSITION : MOP_IN ( OP_BEGIN_POSITION ) ; if ( s != msa -> start ) goto fail ; MOP_OUT ; continue ; break ; case OP_MEMORY_START_PUSH : MOP_IN ( OP_MEMORY_START_PUSH ) ; GET_MEMNUM_INC ( mem , p ) ; STACK_PUSH_MEM_START ( mem , s ) ; MOP_OUT ; continue ; break ; case OP_MEMORY_START : MOP_IN ( OP_MEMORY_START ) ; GET_MEMNUM_INC ( mem , p ) ; mem_start_stk [ mem ] = ( OnigStackIndex ) ( ( void * ) s ) ; MOP_OUT ; continue ; break ; case OP_MEMORY_END_PUSH : MOP_IN ( OP_MEMORY_END_PUSH ) ; GET_MEMNUM_INC ( mem , p ) ; STACK_PUSH_MEM_END ( mem , s ) ; MOP_OUT ; continue ; break ; case OP_MEMORY_END : MOP_IN ( OP_MEMORY_END ) ; GET_MEMNUM_INC ( mem , p ) ; mem_end_stk [ mem ] = ( OnigStackIndex ) ( ( void * ) s ) ; MOP_OUT ; continue ; break ; # ifdef USE_SUBEXP_CALL case OP_MEMORY_END_PUSH_REC : MOP_IN ( OP_MEMORY_END_PUSH_REC ) ; GET_MEMNUM_INC ( mem , p ) ; STACK_GET_MEM_START ( mem , stkp ) ; STACK_PUSH_MEM_END ( mem , s ) ; mem_start_stk [ mem ] = GET_STACK_INDEX ( stkp ) ; MOP_OUT ; continue ; break ; case OP_MEMORY_END_REC : MOP_IN ( OP_MEMORY_END_REC ) ; GET_MEMNUM_INC ( mem , p ) ; mem_end_stk [ mem ] = ( OnigStackIndex ) ( ( void * ) s ) ; STACK_GET_MEM_START ( mem , stkp ) ; if ( BIT_STATUS_AT ( reg -> bt_mem_start , mem ) ) mem_start_stk [ mem ] = GET_STACK_INDEX ( stkp ) ; else mem_start_stk [ mem ] = ( OnigStackIndex ) ( ( void * ) stkp -> u . mem . pstr ) ; STACK_PUSH_MEM_END_MARK ( mem ) ; MOP_OUT ; continue ; break ; # endif case OP_BACKREF1 : MOP_IN ( OP_BACKREF1 ) ; mem = 1 ; goto backref ; break ; case OP_BACKREF2 : MOP_IN ( OP_BACKREF2 ) ; mem = 2 ; goto backref ; break ; case OP_BACKREFN : MOP_IN ( OP_BACKREFN ) ; GET_MEMNUM_INC ( mem , p ) ; backref : { int len ; UChar * pstart , * pend ; if ( mem > num_mem ) goto fail ; if ( mem_end_stk [ mem ] == INVALID_STACK_INDEX ) goto fail ; if ( mem_start_stk [ mem ] == INVALID_STACK_INDEX ) goto fail ; if ( BIT_STATUS_AT ( reg -> bt_mem_start , mem ) ) pstart = STACK_AT ( mem_start_stk [ mem ] ) -> u . mem . pstr ; else pstart = ( UChar * ) ( ( void * ) mem_start_stk [ mem ] ) ; pend = ( BIT_STATUS_AT ( reg -> bt_mem_end , mem ) ? STACK_AT ( mem_end_stk [ mem ] ) -> u . mem . pstr : ( UChar * ) ( ( void * ) mem_end_stk [ mem ] ) ) ; n = pend - pstart ; DATA_ENSURE ( n ) ; sprev = s ; STRING_CMP ( pstart , s , n ) ; while ( sprev + ( len = enclen ( encode , sprev ) ) < s ) sprev += len ; MOP_OUT ; continue ; } break ; case OP_BACKREFN_IC : MOP_IN ( OP_BACKREFN_IC ) ; GET_MEMNUM_INC ( mem , p ) ; { int len ; UChar * pstart , * pend ; if ( mem > num_mem ) goto fail ; if ( mem_end_stk [ mem ] == INVALID_STACK_INDEX ) goto fail ; if ( mem_start_stk [ mem ] == INVALID_STACK_INDEX ) goto fail ; if ( BIT_STATUS_AT ( reg -> bt_mem_start , mem ) ) pstart = STACK_AT ( mem_start_stk [ mem ] ) -> u . mem . pstr ; else pstart = ( UChar * ) ( ( void * ) mem_start_stk [ mem ] ) ; pend = ( BIT_STATUS_AT ( reg -> bt_mem_end , mem ) ? STACK_AT ( mem_end_stk [ mem ] ) -> u . mem . pstr : ( UChar * ) ( ( void * ) mem_end_stk [ mem ] ) ) ; n = pend - pstart ; DATA_ENSURE ( n ) ; sprev = s ; STRING_CMP_IC ( case_fold_flag , pstart , & s , n ) ; while ( sprev + ( len = enclen ( encode , sprev ) ) < s ) sprev += len ; MOP_OUT ; continue ; } break ; case OP_BACKREF_MULTI : MOP_IN ( OP_BACKREF_MULTI ) ; { int len , is_fail ; UChar * pstart , * pend , * swork ; GET_LENGTH_INC ( tlen , p ) ; for ( i = 0 ; i < tlen ; i ++ ) { GET_MEMNUM_INC ( mem , p ) ; if ( mem_end_stk [ mem ] == INVALID_STACK_INDEX ) continue ; if ( mem_start_stk [ mem ] == INVALID_STACK_INDEX ) continue ; if ( BIT_STATUS_AT ( reg -> bt_mem_start , mem ) ) pstart = STACK_AT ( mem_start_stk [ mem ] ) -> u . mem . pstr ; else pstart = ( UChar * ) ( ( void * ) mem_start_stk [ mem ] ) ; pend = ( BIT_STATUS_AT ( reg -> bt_mem_end , mem ) ? STACK_AT ( mem_end_stk [ mem ] ) -> u . mem . pstr : ( UChar * ) ( ( void * ) mem_end_stk [ mem ] ) ) ; n = pend - pstart ; DATA_ENSURE ( n ) ; sprev = s ; swork = s ; STRING_CMP_VALUE ( pstart , swork , n , is_fail ) ; if ( is_fail ) continue ; s = swork ; while ( sprev + ( len = enclen ( encode , sprev ) ) < s ) sprev += len ; p += ( SIZE_MEMNUM * ( tlen - i - 1 ) ) ; break ; } if ( i == tlen ) goto fail ; MOP_OUT ; continue ; } break ; case OP_BACKREF_MULTI_IC : MOP_IN ( OP_BACKREF_MULTI_IC ) ; { int len , is_fail ; UChar * pstart , * pend , * swork ; GET_LENGTH_INC ( tlen , p ) ; for ( i = 0 ; i < tlen ; i ++ ) { GET_MEMNUM_INC ( mem , p ) ; if ( mem_end_stk [ mem ] == INVALID_STACK_INDEX ) continue ; if ( mem_start_stk [ mem ] == INVALID_STACK_INDEX ) continue ; if ( BIT_STATUS_AT ( reg -> bt_mem_start , mem ) ) pstart = STACK_AT ( mem_start_stk [ mem ] ) -> u . mem . pstr ; else pstart = ( UChar * ) ( ( void * ) mem_start_stk [ mem ] ) ; pend = ( BIT_STATUS_AT ( reg -> bt_mem_end , mem ) ? STACK_AT ( mem_end_stk [ mem ] ) -> u . mem . pstr : ( UChar * ) ( ( void * ) mem_end_stk [ mem ] ) ) ; n = pend - pstart ; DATA_ENSURE ( n ) ; sprev = s ; swork = s ; STRING_CMP_VALUE_IC ( case_fold_flag , pstart , & swork , n , is_fail ) ; if ( is_fail ) continue ; s = swork ; while ( sprev + ( len = enclen ( encode , sprev ) ) < s ) sprev += len ; p += ( SIZE_MEMNUM * ( tlen - i - 1 ) ) ; break ; } if ( i == tlen ) goto fail ; MOP_OUT ; continue ; } break ; # ifdef USE_BACKREF_WITH_LEVEL case OP_BACKREF_WITH_LEVEL : { int len ; OnigOptionType ic ; LengthType level ; GET_OPTION_INC ( ic , p ) ; GET_LENGTH_INC ( level , p ) ; GET_LENGTH_INC ( tlen , p ) ; sprev = s ; if ( backref_match_at_nested_level ( reg , stk , stk_base , ic , case_fold_flag , ( int ) level , ( int ) tlen , p , & s , end ) ) { while ( sprev + ( len = enclen ( encode , sprev ) ) < s ) sprev += len ; p += ( SIZE_MEMNUM * tlen ) ; } else goto fail ; MOP_OUT ; continue ; } break ; # endif # if 0 case OP_SET_OPTION_PUSH : MOP_IN ( OP_SET_OPTION_PUSH ) ; GET_OPTION_INC ( option , p ) ; STACK_PUSH_ALT ( p , s , sprev ) ; p += SIZE_OP_SET_OPTION + SIZE_OP_FAIL ; MOP_OUT ; continue ; break ; case OP_SET_OPTION : MOP_IN ( OP_SET_OPTION ) ; GET_OPTION_INC ( option , p ) ; MOP_OUT ; continue ; break ; # endif case OP_NULL_CHECK_START : MOP_IN ( OP_NULL_CHECK_START ) ; GET_MEMNUM_INC ( mem , p ) ; STACK_PUSH_NULL_CHECK_START ( mem , s ) ; MOP_OUT ; continue ; break ; case OP_NULL_CHECK_END : MOP_IN ( OP_NULL_CHECK_END ) ; { int isnull ; GET_MEMNUM_INC ( mem , p ) ; STACK_NULL_CHECK ( isnull , mem , s ) ; if ( isnull ) { # ifdef ONIG_DEBUG_MATCH fprintf ( stderr , \"NULL_CHECK_END:<S2SV_blank>skip<S2SV_blank><S2SV_blank>id:%d,<S2SV_blank>s:%d\\\\n\" , ( int ) mem , ( int ) s ) ; # endif null_check_found : switch ( * p ++ ) { case OP_JUMP : case OP_PUSH : p += SIZE_RELADDR ; break ; case OP_REPEAT_INC : case OP_REPEAT_INC_NG : case OP_REPEAT_INC_SG : case OP_REPEAT_INC_NG_SG : p += SIZE_MEMNUM ; break ; default : goto unexpected_bytecode_error ; break ; } } } MOP_OUT ; continue ; break ; # ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT case OP_NULL_CHECK_END_MEMST : MOP_IN ( OP_NULL_CHECK_END_MEMST ) ; { int isnull ; GET_MEMNUM_INC ( mem , p ) ; STACK_NULL_CHECK_MEMST ( isnull , mem , s , reg ) ; if ( isnull ) { # ifdef ONIG_DEBUG_MATCH fprintf ( stderr , \"NULL_CHECK_END_MEMST:<S2SV_blank>skip<S2SV_blank><S2SV_blank>id:%d,<S2SV_blank>s:%d\\\\n\" , ( int ) mem , ( int ) s ) ; # endif if ( isnull == - 1 ) goto fail ; goto null_check_found ; } } MOP_OUT ; continue ; break ; # endif # ifdef USE_SUBEXP_CALL case OP_NULL_CHECK_END_MEMST_PUSH : MOP_IN ( OP_NULL_CHECK_END_MEMST_PUSH ) ; { int isnull ; GET_MEMNUM_INC ( mem , p ) ; # ifdef USE_MONOMANIAC_CHECK_CAPTURES_IN_ENDLESS_REPEAT STACK_NULL_CHECK_MEMST_REC ( isnull , mem , s , reg ) ; # else STACK_NULL_CHECK_REC ( isnull , mem , s ) ; # endif if ( isnull ) { # ifdef ONIG_DEBUG_MATCH fprintf ( stderr , \"NULL_CHECK_END_MEMST_PUSH:<S2SV_blank>skip<S2SV_blank><S2SV_blank>id:%d,<S2SV_blank>s:%d\\\\n\" , ( int ) mem , ( int ) s ) ; # endif if ( isnull == - 1 ) goto fail ; goto null_check_found ; } else { STACK_PUSH_NULL_CHECK_END ( mem ) ; } } MOP_OUT ; continue ; break ; # endif case OP_JUMP : MOP_IN ( OP_JUMP ) ; GET_RELADDR_INC ( addr , p ) ; p += addr ; MOP_OUT ; CHECK_INTERRUPT_IN_MATCH_AT ; continue ; break ; case OP_PUSH : MOP_IN ( OP_PUSH ) ; GET_RELADDR_INC ( addr , p ) ; STACK_PUSH_ALT ( p + addr , s , sprev ) ; MOP_OUT ; continue ; break ; # ifdef USE_COMBINATION_EXPLOSION_CHECK case OP_STATE_CHECK_PUSH : MOP_IN ( OP_STATE_CHECK_PUSH ) ; GET_STATE_CHECK_NUM_INC ( mem , p ) ; STATE_CHECK_VAL ( scv , mem ) ; if ( scv ) goto fail ; GET_RELADDR_INC ( addr , p ) ; STACK_PUSH_ALT_WITH_STATE_CHECK ( p + addr , s , sprev , mem ) ; MOP_OUT ; continue ; break ; case OP_STATE_CHECK_PUSH_OR_JUMP : MOP_IN ( OP_STATE_CHECK_PUSH_OR_JUMP ) ; GET_STATE_CHECK_NUM_INC ( mem , p ) ; GET_RELADDR_INC ( addr , p ) ; STATE_CHECK_VAL ( scv , mem ) ; if ( scv ) { p += addr ; } else { STACK_PUSH_ALT_WITH_STATE_CHECK ( p + addr , s , sprev , mem ) ; } MOP_OUT ; continue ; break ; case OP_STATE_CHECK : MOP_IN ( OP_STATE_CHECK ) ; GET_STATE_CHECK_NUM_INC ( mem , p ) ; STATE_CHECK_VAL ( scv , mem ) ; if ( scv ) goto fail ; STACK_PUSH_STATE_CHECK ( s , mem ) ; MOP_OUT ; continue ; break ; # endif case OP_POP : MOP_IN ( OP_POP ) ; STACK_POP_ONE ; MOP_OUT ; continue ; break ; case OP_PUSH_OR_JUMP_EXACT1 : MOP_IN ( OP_PUSH_OR_JUMP_EXACT1 ) ; GET_RELADDR_INC ( addr , p ) ; if ( * p == * s && DATA_ENSURE_CHECK1 ) { p ++ ; STACK_PUSH_ALT ( p + addr , s , sprev ) ; MOP_OUT ; continue ; } p += ( addr + 1 ) ; MOP_OUT ; continue ; break ; case OP_PUSH_IF_PEEK_NEXT : MOP_IN ( OP_PUSH_IF_PEEK_NEXT ) ; GET_RELADDR_INC ( addr , p ) ; if ( * p == * s ) { p ++ ; STACK_PUSH_ALT ( p + addr , s , sprev ) ; MOP_OUT ; continue ; } p ++ ; MOP_OUT ; continue ; break ; case OP_REPEAT : MOP_IN ( OP_REPEAT ) ; { GET_MEMNUM_INC ( mem , p ) ; GET_RELADDR_INC ( addr , p ) ; STACK_ENSURE ( 1 ) ; repeat_stk [ mem ] = GET_STACK_INDEX ( stk ) ; STACK_PUSH_REPEAT ( mem , p ) ; if ( reg -> repeat_range [ mem ] . lower == 0 ) { STACK_PUSH_ALT ( p + addr , s , sprev ) ; } } MOP_OUT ; continue ; break ; case OP_REPEAT_NG : MOP_IN ( OP_REPEAT_NG ) ; { GET_MEMNUM_INC ( mem , p ) ; GET_RELADDR_INC ( addr , p ) ; STACK_ENSURE ( 1 ) ; repeat_stk [ mem ] = GET_STACK_INDEX ( stk ) ; STACK_PUSH_REPEAT ( mem , p ) ; if ( reg -> repeat_range [ mem ] . lower == 0 ) { STACK_PUSH_ALT ( p , s , sprev ) ; p += addr ; } } MOP_OUT ; continue ; break ; case OP_REPEAT_INC : MOP_IN ( OP_REPEAT_INC ) ; GET_MEMNUM_INC ( mem , p ) ; si = repeat_stk [ mem ] ; stkp = STACK_AT ( si ) ; repeat_inc : stkp -> u . repeat . count ++ ; if ( stkp -> u . repeat . count >= reg -> repeat_range [ mem ] . upper ) { } else if ( stkp -> u . repeat . count >= reg -> repeat_range [ mem ] . lower ) { STACK_PUSH_ALT ( p , s , sprev ) ; p = STACK_AT ( si ) -> u . repeat . pcode ; } else { p = stkp -> u . repeat . pcode ; } STACK_PUSH_REPEAT_INC ( si ) ; MOP_OUT ; CHECK_INTERRUPT_IN_MATCH_AT ; continue ; break ; case OP_REPEAT_INC_SG : MOP_IN ( OP_REPEAT_INC_SG ) ; GET_MEMNUM_INC ( mem , p ) ; STACK_GET_REPEAT ( mem , stkp ) ; si = GET_STACK_INDEX ( stkp ) ; goto repeat_inc ; break ; case OP_REPEAT_INC_NG : MOP_IN ( OP_REPEAT_INC_NG ) ; GET_MEMNUM_INC ( mem , p ) ; si = repeat_stk [ mem ] ; stkp = STACK_AT ( si ) ; repeat_inc_ng : stkp -> u . repeat . count ++ ; if ( stkp -> u . repeat . count < reg -> repeat_range [ mem ] . upper ) { if ( stkp -> u . repeat . count >= reg -> repeat_range [ mem ] . lower ) { UChar * pcode = stkp -> u . repeat . pcode ; STACK_PUSH_REPEAT_INC ( si ) ; STACK_PUSH_ALT ( pcode , s , sprev ) ; } else { p = stkp -> u . repeat . pcode ; STACK_PUSH_REPEAT_INC ( si ) ; } } else if ( stkp -> u . repeat . count == reg -> repeat_range [ mem ] . upper ) { STACK_PUSH_REPEAT_INC ( si ) ; } MOP_OUT ; CHECK_INTERRUPT_IN_MATCH_AT ; continue ; break ; case OP_REPEAT_INC_NG_SG : MOP_IN ( OP_REPEAT_INC_NG_SG ) ; GET_MEMNUM_INC ( mem , p ) ; STACK_GET_REPEAT ( mem , stkp ) ; si = GET_STACK_INDEX ( stkp ) ; goto repeat_inc_ng ; break ; case OP_PUSH_POS : MOP_IN ( OP_PUSH_POS ) ; STACK_PUSH_POS ( s , sprev ) ; MOP_OUT ; continue ; break ; case OP_POP_POS : MOP_IN ( OP_POP_POS ) ; { STACK_POS_END ( stkp ) ; s = stkp -> u . state . pstr ; sprev = stkp -> u . state . pstr_prev ; } MOP_OUT ; continue ; break ; case OP_PUSH_POS_NOT : MOP_IN ( OP_PUSH_POS_NOT ) ; GET_RELADDR_INC ( addr , p ) ; STACK_PUSH_POS_NOT ( p + addr , s , sprev ) ; MOP_OUT ; continue ; break ; case OP_FAIL_POS : MOP_IN ( OP_FAIL_POS ) ; STACK_POP_TIL_POS_NOT ; goto fail ; break ; case OP_PUSH_STOP_BT : MOP_IN ( OP_PUSH_STOP_BT ) ; STACK_PUSH_STOP_BT ; MOP_OUT ; continue ; break ; case OP_POP_STOP_BT : MOP_IN ( OP_POP_STOP_BT ) ; STACK_STOP_BT_END ; MOP_OUT ; continue ; break ; case OP_LOOK_BEHIND : MOP_IN ( OP_LOOK_BEHIND ) ; GET_LENGTH_INC ( tlen , p ) ; s = ( UChar * ) ONIGENC_STEP_BACK ( encode , str , s , ( int ) tlen ) ; if ( IS_NULL ( s ) ) goto fail ; sprev = ( UChar * ) onigenc_get_prev_char_head ( encode , str , s ) ; MOP_OUT ; continue ; break ; case OP_PUSH_LOOK_BEHIND_NOT : MOP_IN ( OP_PUSH_LOOK_BEHIND_NOT ) ; GET_RELADDR_INC ( addr , p ) ; GET_LENGTH_INC ( tlen , p ) ; q = ( UChar * ) ONIGENC_STEP_BACK ( encode , str , s , ( int ) tlen ) ; if ( IS_NULL ( q ) ) { p += addr ; } else { STACK_PUSH_LOOK_BEHIND_NOT ( p + addr , s , sprev ) ; s = q ; sprev = ( UChar * ) onigenc_get_prev_char_head ( encode , str , s ) ; } MOP_OUT ; continue ; break ; case OP_FAIL_LOOK_BEHIND_NOT : MOP_IN ( OP_FAIL_LOOK_BEHIND_NOT ) ; STACK_POP_TIL_LOOK_BEHIND_NOT ; goto fail ; break ; # ifdef USE_SUBEXP_CALL case OP_CALL : MOP_IN ( OP_CALL ) ; GET_ABSADDR_INC ( addr , p ) ; STACK_PUSH_CALL_FRAME ( p ) ; p = reg -> p + addr ; MOP_OUT ; continue ; break ; case OP_RETURN : MOP_IN ( OP_RETURN ) ; STACK_RETURN ( p ) ; STACK_PUSH_RETURN ; MOP_OUT ; continue ; break ; # endif case OP_FINISH : goto finish ; break ; fail : MOP_OUT ; case OP_FAIL : MOP_IN ( OP_FAIL ) ; STACK_POP ; p = stk -> u . state . pcode ; s = stk -> u . state . pstr ; sprev = stk -> u . state . pstr_prev ; # ifdef USE_COMBINATION_EXPLOSION_CHECK if ( stk -> u . state . state_check != 0 ) { stk -> type = STK_STATE_CHECK_MARK ; stk ++ ; } # endif MOP_OUT ; continue ; break ; default : goto bytecode_error ; } sprev = sbegin ; } finish : STACK_SAVE ; return best_len ; # ifdef ONIG_DEBUG stack_error : STACK_SAVE ; return ONIGERR_STACK_BUG ; # endif bytecode_error : STACK_SAVE ; return ONIGERR_UNDEFINED_BYTECODE ; unexpected_bytecode_error : STACK_SAVE ; return ONIGERR_UNEXPECTED_BYTECODE ; }\n\n```",
    "output": "修复后的代码：\n\n```\n<S2SV_ModStart> OP_EXACT1 ) ; <S2SV_ModEnd> DATA_ENSURE ( 1 <S2SV_ModStart> ++ ; s <S2SV_ModEnd> ++ ; MOP_OUT\n\n```"
  }
]